Annotation of loncom/lond, revision 1.566
1.1 albertel 1: #!/usr/bin/perl
2: # The LearningOnline Network
3: # lond "LON Daemon" Server (port "LOND" 5663)
1.60 www 4: #
1.566 ! raeburn 5: # $Id: lond,v 1.565 2021/02/08 14:50:53 raeburn Exp $
1.60 www 6: #
7: # Copyright Michigan State University Board of Trustees
8: #
9: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
10: #
11: # LON-CAPA is free software; you can redistribute it and/or modify
12: # it under the terms of the GNU General Public License as published by
1.167 foxr 13: # the Free Software Foundation; either version 2 of the License, or
1.60 www 14: # (at your option) any later version.
15: #
16: # LON-CAPA is distributed in the hope that it will be useful,
17: # but WITHOUT ANY WARRANTY; without even the implied warranty of
18: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19: # GNU General Public License for more details.
20: #
21: # You should have received a copy of the GNU General Public License
22: # along with LON-CAPA; if not, write to the Free Software
1.178 foxr 23: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
1.60 www 24: #
25: # /home/httpd/html/adm/gpl.txt
26: #
1.161 foxr 27:
28:
1.60 www 29: # http://www.lon-capa.org/
30: #
1.54 harris41 31:
1.134 albertel 32: use strict;
1.80 harris41 33: use lib '/home/httpd/lib/perl/';
1.325 albertel 34: use LONCAPA;
1.80 harris41 35: use LONCAPA::Configuration;
1.490 droeschl 36: use LONCAPA::Lond;
1.80 harris41 37:
1.532 raeburn 38: use Socket;
1.1 albertel 39: use IO::Socket;
40: use IO::File;
1.126 albertel 41: #use Apache::File;
1.1 albertel 42: use POSIX;
43: use Crypt::IDEA;
1.523 raeburn 44: use HTTP::Request;
1.347 raeburn 45: use Digest::MD5 qw(md5_hex);
1.3 www 46: use GDBM_File;
1.91 albertel 47: use Authen::Krb5;
1.49 albertel 48: use localauth;
1.193 raeburn 49: use localenroll;
1.265 albertel 50: use localstudentphoto;
1.143 foxr 51: use File::Copy;
1.292 albertel 52: use File::Find;
1.200 matthew 53: use LONCAPA::lonlocal;
54: use LONCAPA::lonssl;
1.221 albertel 55: use Fcntl qw(:flock);
1.383 raeburn 56: use Apache::lonnet;
1.472 raeburn 57: use Mail::Send;
1.518 raeburn 58: use Crypt::Eksblowfish::Bcrypt;
59: use Digest::SHA;
60: use Encode;
1.523 raeburn 61: use LONCAPA::LWPReq;
1.1 albertel 62:
1.463 foxr 63: my $DEBUG = 0; # Non zero to enable debug log entries.
1.77 foxr 64:
1.57 www 65: my $status='';
66: my $lastlog='';
67:
1.566 ! raeburn 68: my $VERSION='$Revision: 1.565 $'; #' stupid emacs
1.121 albertel 69: my $remoteVERSION;
1.214 foxr 70: my $currenthostid="default";
1.115 albertel 71: my $currentdomainid;
1.134 albertel 72:
73: my $client;
1.200 matthew 74: my $clientip; # IP address of client.
75: my $clientname; # LonCAPA name of client.
1.448 raeburn 76: my $clientversion; # LonCAPA version running on client.
77: my $clienthomedom; # LonCAPA domain of homeID for client.
1.525 raeburn 78: my $clientintdom; # LonCAPA "internet domain" for client.
1.532 raeburn 79: my $clientsamedom; # LonCAPA domain same for this host
80: # and client.
1.525 raeburn 81: my $clientsameinst; # LonCAPA "internet domain" same for
82: # this host and client.
1.556 raeburn 83: my $clientremoteok; # Current domain permits hosting on client
84: # (not set if host and client share "internet domain").
85: # Values are 0 or 1; 1 if allowed.
86: my %clientprohibited; # Commands from client prohibited for domain's
87: # users.
88:
1.134 albertel 89: my $server;
1.200 matthew 90:
91: my $keymode;
1.198 foxr 92:
1.207 foxr 93: my $cipher; # Cipher key negotiated with client
94: my $tmpsnum = 0; # Id of tmpputs.
95:
1.178 foxr 96: #
97: # Connection type is:
98: # client - All client actions are allowed
99: # manager - only management functions allowed.
100: # both - Both management and client actions are allowed
101: #
1.161 foxr 102:
1.178 foxr 103: my $ConnectionType;
1.161 foxr 104:
1.178 foxr 105: my %managers; # Ip -> manager names
1.161 foxr 106:
1.178 foxr 107: my %perlvar; # Will have the apache conf defined perl vars.
1.134 albertel 108:
1.532 raeburn 109: my %secureconf; # Will have requirements for security
110: # of lond connections
111:
1.545 raeburn 112: my %crlchecked; # Will contain clients for which the client's SSL
113: # has been checked against the cluster's Certificate
114: # Revocation List.
115:
1.480 raeburn 116: my $dist;
117:
1.178 foxr 118: #
1.207 foxr 119: # The hash below is used for command dispatching, and is therefore keyed on the request keyword.
120: # Each element of the hash contains a reference to an array that contains:
121: # A reference to a sub that executes the request corresponding to the keyword.
122: # A flag that is true if the request must be encoded to be acceptable.
123: # A mask with bits as follows:
124: # CLIENT_OK - Set when the function is allowed by ordinary clients
125: # MANAGER_OK - Set when the function is allowed to manager clients.
126: #
127: my $CLIENT_OK = 1;
128: my $MANAGER_OK = 2;
129: my %Dispatcher;
130:
131:
132: #
1.178 foxr 133: # The array below are password error strings."
134: #
135: my $lastpwderror = 13; # Largest error number from lcpasswd.
136: my @passwderrors = ("ok",
1.287 foxr 137: "pwchange_failure - lcpasswd must be run as user 'www'",
138: "pwchange_failure - lcpasswd got incorrect number of arguments",
139: "pwchange_failure - lcpasswd did not get the right nubmer of input text lines",
140: "pwchange_failure - lcpasswd too many simultaneous pwd changes in progress",
141: "pwchange_failure - lcpasswd User does not exist.",
142: "pwchange_failure - lcpasswd Incorrect current passwd",
143: "pwchange_failure - lcpasswd Unable to su to root.",
144: "pwchange_failure - lcpasswd Cannot set new passwd.",
145: "pwchange_failure - lcpasswd Username has invalid characters",
146: "pwchange_failure - lcpasswd Invalid characters in password",
147: "pwchange_failure - lcpasswd User already exists",
148: "pwchange_failure - lcpasswd Something went wrong with user addition.",
149: "pwchange_failure - lcpasswd Password mismatch",
150: "pwchange_failure - lcpasswd Error filename is invalid");
1.97 foxr 151:
152:
1.412 foxr 153: # This array are the errors from lcinstallfile:
154:
155: my @installerrors = ("ok",
156: "Initial user id of client not that of www",
157: "Usage error, not enough command line arguments",
1.500 bisitz 158: "Source filename does not exist",
159: "Destination filename does not exist",
1.412 foxr 160: "Some file operation failed",
161: "Invalid table filename."
162: );
1.207 foxr 163:
164: #
1.525 raeburn 165: # The %trust hash classifies commands according to type of trust
166: # required for execution of the command.
167: #
168: # When clients from a different institution request execution of a
169: # particular command, the trust settings for that institution set
170: # for this domain (or default domain for a multi-domain server) will
171: # be checked to see if running the command is allowed.
172: #
173: # Trust types which depend on the "Trust" domain configuration
174: # for the machine's default domain are:
175: #
176: # content ("Access to this domain's content by others")
177: # shared ("Access to other domain's content by this domain")
178: # enroll ("Enrollment in this domain's courses by others")
179: # coaurem ("Co-author roles for this domain's users elsewhere")
1.552 raeburn 180: # othcoau ("Co-author roles in this domain for others")
1.525 raeburn 181: # domroles ("Domain roles in this domain assignable to others")
182: # catalog ("Course Catalog for this domain displayed elsewhere")
183: # reqcrs ("Requests for creation of courses in this domain by others")
184: # msg ("Users in other domains can send messages to this domain")
185: #
186: # Trust type which depends on the User Session Hosting (remote)
187: # domain configuration for machine's default domain is: "remote".
188: #
189: # Trust types which depend on contents of manager.tab in
190: # /home/httpd/lonTabs is: "manageronly".
191: #
192: # Trust type which requires client to share the same LON-CAPA
193: # "internet domain" (i.e., same institution as this server) is:
194: # "institutiononly".
195: #
196:
197: my %trust = (
198: auth => {remote => 1},
199: autocreatepassword => {remote => 1},
200: autocrsreqchecks => {remote => 1, reqcrs => 1},
201: autocrsrequpdate => {remote => 1},
202: autocrsreqvalidation => {remote => 1},
203: autogetsections => {remote => 1},
204: autoinstcodedefaults => {remote => 1, catalog => 1},
205: autoinstcodeformat => {remote => 1, catalog => 1},
206: autonewcourse => {remote => 1, reqcrs => 1},
207: autophotocheck => {remote => 1, enroll => 1},
208: autophotochoice => {remote => 1},
209: autophotopermission => {remote => 1, enroll => 1},
210: autopossibleinstcodes => {remote => 1, reqcrs => 1},
211: autoretrieve => {remote => 1, enroll => 1, catalog => 1},
212: autorun => {remote => 1, enroll => 1, reqcrs => 1},
213: autovalidateclass_sec => {catalog => 1},
214: autovalidatecourse => {remote => 1, enroll => 1},
215: autovalidateinstcode => {domroles => 1, remote => 1, enroll => 1},
1.566 ! raeburn 216: autovalidateinstcrosslist => {remote => 1, enroll => 1},
1.525 raeburn 217: changeuserauth => {remote => 1, domroles => 1},
218: chatretr => {remote => 1, enroll => 1},
219: chatsend => {remote => 1, enroll => 1},
220: courseiddump => {remote => 1, domroles => 1, enroll => 1},
221: courseidput => {remote => 1, domroles => 1, enroll => 1},
222: courseidputhash => {remote => 1, domroles => 1, enroll => 1},
223: courselastaccess => {remote => 1, domroles => 1, enroll => 1},
1.561 raeburn 224: coursesessions => {institutiononly => 1},
1.525 raeburn 225: currentauth => {remote => 1, domroles => 1, enroll => 1},
226: currentdump => {remote => 1, enroll => 1},
227: currentversion => {remote=> 1, content => 1},
228: dcmaildump => {remote => 1, domroles => 1},
229: dcmailput => {remote => 1, domroles => 1},
230: del => {remote => 1, domroles => 1, enroll => 1, content => 1},
1.551 raeburn 231: delbalcookie => {institutiononly => 1},
1.560 raeburn 232: delusersession => {institutiononly => 1},
1.525 raeburn 233: deldom => {remote => 1, domroles => 1}, # not currently used
234: devalidatecache => {institutiononly => 1},
235: domroleput => {remote => 1, enroll => 1},
236: domrolesdump => {remote => 1, catalog => 1},
237: du => {remote => 1, enroll => 1},
238: du2 => {remote => 1, enroll => 1},
239: dump => {remote => 1, enroll => 1, domroles => 1},
240: edit => {institutiononly => 1}, #not used currently
241: eget => {remote => 1, domroles => 1, enroll => 1}, #not used currently
1.536 raeburn 242: egetdom => {remote => 1, domroles => 1, enroll => 1, },
1.553 raeburn 243: ekey => {anywhere => 1},
1.525 raeburn 244: exit => {anywhere => 1},
245: fetchuserfile => {remote => 1, enroll => 1},
246: get => {remote => 1, domroles => 1, enroll => 1},
247: getdom => {anywhere => 1},
248: home => {anywhere => 1},
249: iddel => {remote => 1, enroll => 1},
250: idget => {remote => 1, enroll => 1},
251: idput => {remote => 1, domroles => 1, enroll => 1},
252: inc => {remote => 1, enroll => 1},
253: init => {anywhere => 1},
254: inst_usertypes => {remote => 1, domroles => 1, enroll => 1},
255: instemailrules => {remote => 1, domroles => 1},
256: instidrulecheck => {remote => 1, domroles => 1,},
257: instidrules => {remote => 1, domroles => 1,},
258: instrulecheck => {remote => 1, enroll => 1, reqcrs => 1, domroles => 1},
259: instselfcreatecheck => {institutiononly => 1},
260: instuserrules => {remote => 1, enroll => 1, reqcrs => 1, domroles => 1},
261: keys => {remote => 1,},
262: load => {anywhere => 1},
263: log => {anywhere => 1},
264: ls => {remote => 1, enroll => 1, content => 1,},
265: ls2 => {remote => 1, enroll => 1, content => 1,},
266: ls3 => {remote => 1, enroll => 1, content => 1,},
267: makeuser => {remote => 1, enroll => 1, domroles => 1,},
268: mkdiruserfile => {remote => 1, enroll => 1,},
269: newput => {remote => 1, enroll => 1, reqcrs => 1, domroles => 1,},
270: passwd => {remote => 1},
271: ping => {anywhere => 1},
272: pong => {anywhere => 1},
273: pushfile => {manageronly => 1},
274: put => {remote => 1, enroll => 1, domroles => 1, msg => 1, content => 1, shared => 1},
275: putdom => {remote => 1, domroles => 1,},
276: putstore => {remote => 1, enroll => 1},
277: queryreply => {anywhere => 1},
278: querysend => {anywhere => 1},
1.535 raeburn 279: querysend_activitylog => {remote => 1},
280: querysend_allusers => {remote => 1, domroles => 1},
281: querysend_courselog => {remote => 1},
282: querysend_fetchenrollment => {remote => 1},
283: querysend_getinstuser => {remote => 1},
284: querysend_getmultinstusers => {remote => 1},
285: querysend_instdirsearch => {remote => 1, domroles => 1, coaurem => 1},
286: querysend_institutionalphotos => {remote => 1},
287: querysend_portfolio_metadata => {remote => 1, content => 1},
288: querysend_userlog => {remote => 1, domroles => 1},
289: querysend_usersearch => {remote => 1, enroll => 1, coaurem => 1},
1.525 raeburn 290: quit => {anywhere => 1},
291: readlonnetglobal => {institutiononly => 1},
292: reinit => {manageronly => 1}, #not used currently
293: removeuserfile => {remote => 1, enroll => 1},
294: renameuserfile => {remote => 1,},
295: restore => {remote => 1, enroll => 1, reqcrs => 1,},
296: rolesdel => {remote => 1, enroll => 1, domroles => 1, coaurem => 1},
297: rolesput => {remote => 1, enroll => 1, domroles => 1, coaurem => 1},
1.527 raeburn 298: servercerts => {institutiononly => 1},
1.528 raeburn 299: serverdistarch => {anywhere => 1},
1.525 raeburn 300: serverhomeID => {anywhere => 1},
301: serverloncaparev => {anywhere => 1},
302: servertimezone => {remote => 1, enroll => 1},
303: setannounce => {remote => 1, domroles => 1},
304: sethost => {anywhere => 1},
305: store => {remote => 1, enroll => 1, reqcrs => 1,},
306: studentphoto => {remote => 1, enroll => 1},
307: sub => {content => 1,},
1.552 raeburn 308: tmpdel => {institutiononly => 1},
309: tmpget => {institutiononly => 1},
310: tmpput => {remote => 1, othcoau => 1},
1.525 raeburn 311: tokenauthuserfile => {anywhere => 1},
312: unsub => {content => 1,},
313: update => {shared => 1},
1.564 raeburn 314: updatebalcookie => {institutiononly => 1},
1.525 raeburn 315: updateclickers => {remote => 1},
316: userhassession => {anywhere => 1},
317: userload => {anywhere => 1},
318: version => {anywhere => 1}, #not used
319: );
320:
321: #
1.207 foxr 322: # Statistics that are maintained and dislayed in the status line.
323: #
1.212 foxr 324: my $Transactions = 0; # Number of attempted transactions.
325: my $Failures = 0; # Number of transcations failed.
1.207 foxr 326:
327: # ResetStatistics:
328: # Resets the statistics counters:
329: #
330: sub ResetStatistics {
331: $Transactions = 0;
332: $Failures = 0;
333: }
334:
1.200 matthew 335: #------------------------------------------------------------------------
336: #
337: # LocalConnection
338: # Completes the formation of a locally authenticated connection.
339: # This function will ensure that the 'remote' client is really the
340: # local host. If not, the connection is closed, and the function fails.
341: # If so, initcmd is parsed for the name of a file containing the
342: # IDEA session key. The fie is opened, read, deleted and the session
343: # key returned to the caller.
344: #
345: # Parameters:
346: # $Socket - Socket open on client.
347: # $initcmd - The full text of the init command.
348: #
349: # Returns:
350: # IDEA session key on success.
351: # undef on failure.
352: #
353: sub LocalConnection {
354: my ($Socket, $initcmd) = @_;
1.373 albertel 355: Debug("Attempting local connection: $initcmd client: $clientip");
1.277 albertel 356: if($clientip ne "127.0.0.1") {
1.200 matthew 357: &logthis('<font color="red"> LocalConnection rejecting non local: '
1.373 albertel 358: ."$clientip ne 127.0.0.1 </font>");
1.200 matthew 359: close $Socket;
360: return undef;
1.224 foxr 361: } else {
1.200 matthew 362: chomp($initcmd); # Get rid of \n in filename.
363: my ($init, $type, $name) = split(/:/, $initcmd);
364: Debug(" Init command: $init $type $name ");
365:
366: # Require that $init = init, and $type = local: Otherwise
367: # the caller is insane:
368:
369: if(($init ne "init") && ($type ne "local")) {
370: &logthis('<font color = "red"> LocalConnection: caller is insane! '
371: ."init = $init, and type = $type </font>");
372: close($Socket);;
373: return undef;
374:
375: }
376: # Now get the key filename:
377:
378: my $IDEAKey = lonlocal::ReadKeyFile($name);
379: return $IDEAKey;
380: }
381: }
382: #------------------------------------------------------------------------------
383: #
384: # SSLConnection
385: # Completes the formation of an ssh authenticated connection. The
386: # socket is promoted to an ssl socket. If this promotion and the associated
387: # certificate exchange are successful, the IDEA key is generated and sent
388: # to the remote peer via the SSL tunnel. The IDEA key is also returned to
389: # the caller after the SSL tunnel is torn down.
390: #
391: # Parameters:
392: # Name Type Purpose
393: # $Socket IO::Socket::INET Plaintext socket.
394: #
395: # Returns:
396: # IDEA key on success.
397: # undef on failure.
398: #
399: sub SSLConnection {
400: my $Socket = shift;
401:
402: Debug("SSLConnection: ");
403: my $KeyFile = lonssl::KeyFile();
404: if(!$KeyFile) {
405: my $err = lonssl::LastError();
406: &logthis("<font color=\"red\"> CRITICAL"
407: ."Can't get key file $err </font>");
408: return undef;
409: }
410: my ($CACertificate,
411: $Certificate) = lonssl::CertificateFile();
412:
413:
414: # If any of the key, certificate or certificate authority
415: # certificate filenames are not defined, this can't work.
416:
417: if((!$Certificate) || (!$CACertificate)) {
418: my $err = lonssl::LastError();
419: &logthis("<font color=\"red\"> CRITICAL"
420: ."Can't get certificates: $err </font>");
421:
422: return undef;
423: }
424: Debug("Key: $KeyFile CA: $CACertificate Cert: $Certificate");
425:
426: # Indicate to our peer that we can procede with
427: # a transition to ssl authentication:
428:
429: print $Socket "ok:ssl\n";
430:
431: Debug("Approving promotion -> ssl");
432: # And do so:
433:
1.545 raeburn 434: my $CRLFile;
435: unless ($crlchecked{$clientname}) {
436: $CRLFile = lonssl::CRLFile();
437: $crlchecked{$clientname} = 1;
438: }
439:
1.200 matthew 440: my $SSLSocket = lonssl::PromoteServerSocket($Socket,
441: $CACertificate,
442: $Certificate,
1.544 raeburn 443: $KeyFile,
1.545 raeburn 444: $clientname,
1.546 raeburn 445: $CRLFile,
446: $clientversion);
1.200 matthew 447: if(! ($SSLSocket) ) { # SSL socket promotion failed.
448: my $err = lonssl::LastError();
449: &logthis("<font color=\"red\"> CRITICAL "
450: ."SSL Socket promotion failed: $err </font>");
451: return undef;
452: }
453: Debug("SSL Promotion successful");
454:
455: #
456: # The only thing we'll use the socket for is to send the IDEA key
457: # to the peer:
458:
459: my $Key = lonlocal::CreateCipherKey();
460: print $SSLSocket "$Key\n";
461:
462: lonssl::Close($SSLSocket);
463:
464: Debug("Key exchange complete: $Key");
465:
466: return $Key;
467: }
468: #
469: # InsecureConnection:
470: # If insecure connections are allowd,
471: # exchange a challenge with the client to 'validate' the
472: # client (not really, but that's the protocol):
473: # We produce a challenge string that's sent to the client.
474: # The client must then echo the challenge verbatim to us.
475: #
476: # Parameter:
477: # Socket - Socket open on the client.
478: # Returns:
479: # 1 - success.
480: # 0 - failure (e.g.mismatch or insecure not allowed).
481: #
482: sub InsecureConnection {
483: my $Socket = shift;
484:
485: # Don't even start if insecure connections are not allowed.
1.532 raeburn 486: # return 0 if Insecure connections not allowed.
487: #
488: if (ref($secureconf{'connfrom'}) eq 'HASH') {
489: if ($clientsamedom) {
490: if ($secureconf{'connfrom'}{'dom'} eq 'req') {
491: return 0;
492: }
493: } elsif ($clientsameinst) {
494: if ($secureconf{'connfrom'}{'intdom'} eq 'req') {
495: return 0;
496: }
497: } else {
498: if ($secureconf{'connfrom'}{'other'} eq 'req') {
499: return 0;
500: }
501: }
502: } elsif (!$perlvar{londAllowInsecure}) {
1.200 matthew 503: return 0;
504: }
505:
506: # Fabricate a challenge string and send it..
507:
508: my $challenge = "$$".time; # pid + time.
509: print $Socket "$challenge\n";
510: &status("Waiting for challenge reply");
511:
512: my $answer = <$Socket>;
513: $answer =~s/\W//g;
514: if($challenge eq $answer) {
515: return 1;
1.224 foxr 516: } else {
1.200 matthew 517: logthis("<font color='blue'>WARNING client did not respond to challenge</font>");
518: &status("No challenge reqply");
519: return 0;
520: }
521:
522:
523: }
1.251 foxr 524: #
525: # Safely execute a command (as long as it's not a shel command and doesn
526: # not require/rely on shell escapes. The function operates by doing a
527: # a pipe based fork and capturing stdout and stderr from the pipe.
528: #
529: # Formal Parameters:
530: # $line - A line of text to be executed as a command.
531: # Returns:
532: # The output from that command. If the output is multiline the caller
533: # must know how to split up the output.
534: #
535: #
536: sub execute_command {
537: my ($line) = @_;
538: my @words = split(/\s/, $line); # Bust the command up into words.
539: my $output = "";
540:
541: my $pid = open(CHILD, "-|");
542:
543: if($pid) { # Parent process
544: Debug("In parent process for execute_command");
545: my @data = <CHILD>; # Read the child's outupt...
546: close CHILD;
547: foreach my $output_line (@data) {
548: Debug("Adding $output_line");
549: $output .= $output_line; # Presumably has a \n on it.
550: }
551:
552: } else { # Child process
553: close (STDERR);
554: open (STDERR, ">&STDOUT");# Combine stderr, and stdout...
555: exec(@words); # won't return.
556: }
557: return $output;
558: }
559:
1.200 matthew 560:
1.140 foxr 561: # GetCertificate: Given a transaction that requires a certificate,
562: # this function will extract the certificate from the transaction
563: # request. Note that at this point, the only concept of a certificate
564: # is the hostname to which we are connected.
565: #
566: # Parameter:
567: # request - The request sent by our client (this parameterization may
568: # need to change when we really use a certificate granting
569: # authority.
570: #
571: sub GetCertificate {
572: my $request = shift;
573:
574: return $clientip;
575: }
1.161 foxr 576:
1.178 foxr 577: #
578: # Return true if client is a manager.
579: #
580: sub isManager {
581: return (($ConnectionType eq "manager") || ($ConnectionType eq "both"));
582: }
583: #
584: # Return tru if client can do client functions
585: #
586: sub isClient {
587: return (($ConnectionType eq "client") || ($ConnectionType eq "both"));
588: }
1.161 foxr 589:
590:
1.156 foxr 591: #
592: # ReadManagerTable: Reads in the current manager table. For now this is
593: # done on each manager authentication because:
594: # - These authentications are not frequent
595: # - This allows dynamic changes to the manager table
596: # without the need to signal to the lond.
597: #
598: sub ReadManagerTable {
599:
1.412 foxr 600: &Debug("Reading manager table");
1.156 foxr 601: # Clean out the old table first..
602:
1.166 foxr 603: foreach my $key (keys %managers) {
604: delete $managers{$key};
605: }
606:
607: my $tablename = $perlvar{'lonTabDir'}."/managers.tab";
608: if (!open (MANAGERS, $tablename)) {
1.473 raeburn 609: my $hostname = &Apache::lonnet::hostname($perlvar{'lonHostID'});
610: if (&Apache::lonnet::is_LC_dns($hostname)) {
1.472 raeburn 611: &logthis('<font color="red">No manager table. Nobody can manage!!</font>');
612: }
613: return;
1.166 foxr 614: }
615: while(my $host = <MANAGERS>) {
616: chomp($host);
617: if ($host =~ "^#") { # Comment line.
618: next;
619: }
1.368 albertel 620: if (!defined &Apache::lonnet::get_host_ip($host)) { # This is a non cluster member
1.161 foxr 621: # The entry is of the form:
622: # cluname:hostname
623: # cluname - A 'cluster hostname' is needed in order to negotiate
624: # the host key.
625: # hostname- The dns name of the host.
626: #
1.166 foxr 627: my($cluname, $dnsname) = split(/:/, $host);
628:
629: my $ip = gethostbyname($dnsname);
630: if(defined($ip)) { # bad names don't deserve entry.
631: my $hostip = inet_ntoa($ip);
632: $managers{$hostip} = $cluname;
633: logthis('<font color="green"> registering manager '.
634: "$dnsname as $cluname with $hostip </font>\n");
635: }
636: } else {
637: logthis('<font color="green"> existing host'." $host</font>\n");
1.472 raeburn 638: $managers{&Apache::lonnet::get_host_ip($host)} = $host; # Use info from cluster tab if cluster memeber
1.166 foxr 639: }
640: }
1.156 foxr 641: }
1.140 foxr 642:
643: #
644: # ValidManager: Determines if a given certificate represents a valid manager.
645: # in this primitive implementation, the 'certificate' is
646: # just the connecting loncapa client name. This is checked
647: # against a valid client list in the configuration.
648: #
649: #
650: sub ValidManager {
651: my $certificate = shift;
652:
1.163 foxr 653: return isManager;
1.140 foxr 654: }
655: #
1.143 foxr 656: # CopyFile: Called as part of the process of installing a
657: # new configuration file. This function copies an existing
658: # file to a backup file.
659: # Parameters:
660: # oldfile - Name of the file to backup.
661: # newfile - Name of the backup file.
662: # Return:
663: # 0 - Failure (errno has failure reason).
664: # 1 - Success.
665: #
666: sub CopyFile {
1.192 foxr 667:
668: my ($oldfile, $newfile) = @_;
1.143 foxr 669:
1.281 matthew 670: if (! copy($oldfile,$newfile)) {
671: return 0;
1.143 foxr 672: }
1.281 matthew 673: chmod(0660, $newfile);
674: return 1;
1.143 foxr 675: }
1.157 foxr 676: #
677: # Host files are passed out with externally visible host IPs.
678: # If, for example, we are behind a fire-wall or NAT host, our
679: # internally visible IP may be different than the externally
680: # visible IP. Therefore, we always adjust the contents of the
681: # host file so that the entry for ME is the IP that we believe
682: # we have. At present, this is defined as the entry that
683: # DNS has for us. If by some chance we are not able to get a
684: # DNS translation for us, then we assume that the host.tab file
685: # is correct.
686: # BUGBUGBUG - in the future, we really should see if we can
687: # easily query the interface(s) instead.
688: # Parameter(s):
689: # contents - The contents of the host.tab to check.
690: # Returns:
691: # newcontents - The adjusted contents.
692: #
693: #
694: sub AdjustHostContents {
695: my $contents = shift;
696: my $adjusted;
697: my $me = $perlvar{'lonHostID'};
698:
1.354 albertel 699: foreach my $line (split(/\n/,$contents)) {
1.472 raeburn 700: if(!(($line eq "") || ($line =~ /^ *\#/) || ($line =~ /^ *$/) ||
701: ($line =~ /^\s*\^/))) {
1.157 foxr 702: chomp($line);
703: my ($id,$domain,$role,$name,$ip,$maxcon,$idleto,$mincon)=split(/:/,$line);
704: if ($id eq $me) {
1.354 albertel 705: my $ip = gethostbyname($name);
706: my $ipnew = inet_ntoa($ip);
707: $ip = $ipnew;
1.157 foxr 708: # Reconstruct the host line and append to adjusted:
709:
1.354 albertel 710: my $newline = "$id:$domain:$role:$name:$ip";
711: if($maxcon ne "") { # Not all hosts have loncnew tuning params
712: $newline .= ":$maxcon:$idleto:$mincon";
713: }
714: $adjusted .= $newline."\n";
1.157 foxr 715:
1.354 albertel 716: } else { # Not me, pass unmodified.
717: $adjusted .= $line."\n";
718: }
1.157 foxr 719: } else { # Blank or comment never re-written.
720: $adjusted .= $line."\n"; # Pass blanks and comments as is.
721: }
1.354 albertel 722: }
723: return $adjusted;
1.157 foxr 724: }
1.143 foxr 725: #
726: # InstallFile: Called to install an administrative file:
1.412 foxr 727: # - The file is created int a temp directory called <name>.tmp
728: # - lcinstall file is called to install the file.
729: # since the web app has no direct write access to the table directory
1.143 foxr 730: #
731: # Parameters:
732: # Name of the file
733: # File Contents.
734: # Return:
735: # nonzero - success.
736: # 0 - failure and $! has an errno.
1.412 foxr 737: # Assumptions:
738: # File installtion is a relatively infrequent
1.143 foxr 739: #
740: sub InstallFile {
1.192 foxr 741:
742: my ($Filename, $Contents) = @_;
1.412 foxr 743: # my $TempFile = $Filename.".tmp";
744: my $exedir = $perlvar{'lonDaemons'};
745: my $tmpdir = $exedir.'/tmp/';
746: my $TempFile = $tmpdir."TempTableFile.tmp";
1.143 foxr 747:
748: # Open the file for write:
749:
750: my $fh = IO::File->new("> $TempFile"); # Write to temp.
751: if(!(defined $fh)) {
752: &logthis('<font color="red"> Unable to create '.$TempFile."</font>");
753: return 0;
754: }
755: # write the contents of the file:
756:
757: print $fh ($Contents);
758: $fh->close; # In case we ever have a filesystem w. locking
759:
1.412 foxr 760: chmod(0664, $TempFile); # Everyone can write it.
761:
762: # Use lcinstall file to put the file in the table directory...
763:
764: &Debug("Opening pipe to $exedir/lcinstallfile $TempFile $Filename");
765: my $pf = IO::File->new("| $exedir/lcinstallfile $TempFile $Filename > $exedir/logs/lcinstallfile.log");
766: close $pf;
767: my $err = $?;
768: &Debug("Status is $err");
769: if ($err != 0) {
770: my $msg = $err;
771: if ($err < @installerrors) {
772: $msg = $installerrors[$err];
773: }
774: &logthis("Install failed for table file $Filename : $msg");
775: return 0;
776: }
777:
778: # Remove the temp file:
1.143 foxr 779:
1.412 foxr 780: unlink($TempFile);
1.143 foxr 781:
782: return 1;
783: }
1.200 matthew 784:
785:
1.169 foxr 786: #
787: # ConfigFileFromSelector: converts a configuration file selector
1.411 foxr 788: # into a configuration file pathname.
1.472 raeburn 789: # Supports the following file selectors:
790: # hosts, domain, dns_hosts, dns_domain
1.411 foxr 791: #
1.169 foxr 792: #
793: # Parameters:
794: # selector - Configuration file selector.
795: # Returns:
796: # Full path to the file or undef if the selector is invalid.
797: #
798: sub ConfigFileFromSelector {
799: my $selector = shift;
800: my $tablefile;
801:
1.549 raeburn 802: if ($selector eq 'loncapaCAcrl') {
803: my $tabledir = $perlvar{'lonCertificateDirectory'};
804: if (-d $tabledir) {
805: $tablefile = $tabledir.'/'.$selector.'.pem';
806: }
807: } else {
808: my $tabledir = $perlvar{'lonTabDir'}.'/';
809: if (($selector eq "hosts") || ($selector eq "domain") ||
810: ($selector eq "dns_hosts") || ($selector eq "dns_domain")) {
811: $tablefile = $tabledir.$selector.'.tab';
812: }
1.169 foxr 813: }
814: return $tablefile;
815: }
1.143 foxr 816: #
1.141 foxr 817: # PushFile: Called to do an administrative push of a file.
818: # - Ensure the file being pushed is one we support.
819: # - Backup the old file to <filename.saved>
820: # - Separate the contents of the new file out from the
821: # rest of the request.
822: # - Write the new file.
823: # Parameter:
824: # Request - The entire user request. This consists of a : separated
825: # string pushfile:tablename:contents.
826: # NOTE: The contents may have :'s in it as well making things a bit
827: # more interesting... but not much.
828: # Returns:
829: # String to send to client ("ok" or "refused" if bad file).
830: #
831: sub PushFile {
1.510 raeburn 832: my $request = shift;
1.141 foxr 833: my ($command, $filename, $contents) = split(":", $request, 3);
1.412 foxr 834: &Debug("PushFile");
1.141 foxr 835:
1.549 raeburn 836: # At this point in time, pushes for only the following tables and
837: # CRL file are supported:
1.141 foxr 838: # hosts.tab ($filename eq host).
839: # domain.tab ($filename eq domain).
1.472 raeburn 840: # dns_hosts.tab ($filename eq dns_host).
1.554 raeburn 841: # dns_domain.tab ($filename eq dns_domain).
842: # loncapaCAcrl.pem ($filename eq loncapaCAcrl).
1.141 foxr 843: # Construct the destination filename or reject the request.
844: #
845: # lonManage is supposed to ensure this, however this session could be
846: # part of some elaborate spoof that managed somehow to authenticate.
847: #
848:
1.169 foxr 849:
850: my $tablefile = ConfigFileFromSelector($filename);
851: if(! (defined $tablefile)) {
1.141 foxr 852: return "refused";
853: }
1.412 foxr 854:
1.157 foxr 855: # If the file being pushed is the host file, we adjust the entry for ourself so that the
856: # IP will be our current IP as looked up in dns. Note this is only 99% good as it's possible
857: # to conceive of conditions where we don't have a DNS entry locally. This is possible in a
858: # network sense but it doesn't make much sense in a LonCAPA sense so we ignore (for now)
859: # that possibilty.
860:
861: if($filename eq "host") {
862: $contents = AdjustHostContents($contents);
1.549 raeburn 863: } elsif (($filename eq 'dns_host') || ($filename eq 'dns_domain') ||
864: ($filename eq 'loncapaCAcrl')) {
1.510 raeburn 865: if ($contents eq '') {
866: &logthis('<font color="red"> Pushfile: unable to install '
867: .$tablefile." - no data received from push. </font>");
868: return 'error: push had no data';
869: }
870: if (&Apache::lonnet::get_host_ip($clientname)) {
871: my $clienthost = &Apache::lonnet::hostname($clientname);
872: if ($managers{$clientip} eq $clientname) {
873: my $clientprotocol = $Apache::lonnet::protocol{$clientname};
874: $clientprotocol = 'http' if ($clientprotocol ne 'https');
1.549 raeburn 875: my $url;
876: if ($filename eq 'loncapaCAcrl') {
877: $url = '/adm/dns/loncapaCRL';
878: } else {
879: $url = '/adm/'.$filename;
880: $url =~ s{_}{/};
881: }
1.510 raeburn 882: my $request=new HTTP::Request('GET',"$clientprotocol://$clienthost$url");
1.523 raeburn 883: my $response = LONCAPA::LWPReq::makerequest($clientname,$request,'',\%perlvar,60,0);
1.510 raeburn 884: if ($response->is_error()) {
885: &logthis('<font color="red"> Pushfile: unable to install '
886: .$tablefile." - error attempting to pull data. </font>");
887: return 'error: pull failed';
888: } else {
889: my $result = $response->content;
890: chomp($result);
891: unless ($result eq $contents) {
892: &logthis('<font color="red"> Pushfile: unable to install '
893: .$tablefile." - pushed data and pulled data differ. </font>");
894: my $pushleng = length($contents);
895: my $pullleng = length($result);
896: if ($pushleng != $pullleng) {
897: return "error: $pushleng vs $pullleng bytes";
898: } else {
899: return "error: mismatch push and pull";
900: }
901: }
902: }
903: }
904: }
1.157 foxr 905: }
906:
1.141 foxr 907: # Install the new file:
908:
1.412 foxr 909: &logthis("Installing new $tablefile contents:\n$contents");
1.143 foxr 910: if(!InstallFile($tablefile, $contents)) {
911: &logthis('<font color="red"> Pushfile: unable to install '
1.145 foxr 912: .$tablefile." $! </font>");
1.143 foxr 913: return "error:$!";
1.224 foxr 914: } else {
1.143 foxr 915: &logthis('<font color="green"> Installed new '.$tablefile
1.473 raeburn 916: ." - transaction by: $clientname ($clientip)</font>");
1.472 raeburn 917: my $adminmail = $perlvar{'lonAdmEMail'};
918: my $admindom = &Apache::lonnet::host_domain($perlvar{'lonHostID'});
919: if ($admindom ne '') {
920: my %domconfig =
921: &Apache::lonnet::get_dom('configuration',['contacts'],$admindom);
922: if (ref($domconfig{'contacts'}) eq 'HASH') {
923: if ($domconfig{'contacts'}{'adminemail'} ne '') {
924: $adminmail = $domconfig{'contacts'}{'adminemail'};
925: }
926: }
927: }
928: if ($adminmail =~ /^[^\@]+\@[^\@]+$/) {
929: my $msg = new Mail::Send;
930: $msg->to($adminmail);
931: $msg->subject('LON-CAPA DNS update on '.$perlvar{'lonHostID'});
932: $msg->add('Content-type','text/plain; charset=UTF-8');
933: if (my $fh = $msg->open()) {
934: print $fh 'Update to '.$tablefile.' from Cluster Manager '.
1.473 raeburn 935: "$clientname ($clientip)\n";
1.472 raeburn 936: $fh->close;
937: }
938: }
1.143 foxr 939: }
940:
1.141 foxr 941: # Indicate success:
942:
943: return "ok";
944:
945: }
1.145 foxr 946:
947: #
948: # Called to re-init either lonc or lond.
949: #
950: # Parameters:
951: # request - The full request by the client. This is of the form
952: # reinit:<process>
953: # where <process> is allowed to be either of
954: # lonc or lond
955: #
956: # Returns:
957: # The string to be sent back to the client either:
958: # ok - Everything worked just fine.
959: # error:why - There was a failure and why describes the reason.
960: #
961: #
962: sub ReinitProcess {
963: my $request = shift;
964:
1.146 foxr 965:
966: # separate the request (reinit) from the process identifier and
967: # validate it producing the name of the .pid file for the process.
968: #
969: #
970: my ($junk, $process) = split(":", $request);
1.147 foxr 971: my $processpidfile = $perlvar{'lonDaemons'}.'/logs/';
1.146 foxr 972: if($process eq 'lonc') {
973: $processpidfile = $processpidfile."lonc.pid";
1.147 foxr 974: if (!open(PIDFILE, "< $processpidfile")) {
975: return "error:Open failed for $processpidfile";
976: }
977: my $loncpid = <PIDFILE>;
978: close(PIDFILE);
979: logthis('<font color="red"> Reinitializing lonc pid='.$loncpid
980: ."</font>");
981: kill("USR2", $loncpid);
1.146 foxr 982: } elsif ($process eq 'lond') {
1.147 foxr 983: logthis('<font color="red"> Reinitializing self (lond) </font>');
984: &UpdateHosts; # Lond is us!!
1.146 foxr 985: } else {
986: &logthis('<font color="yellow" Invalid reinit request for '.$process
987: ."</font>");
988: return "error:Invalid process identifier $process";
989: }
1.145 foxr 990: return 'ok';
991: }
1.168 foxr 992: # Validate a line in a configuration file edit script:
993: # Validation includes:
994: # - Ensuring the command is valid.
995: # - Ensuring the command has sufficient parameters
996: # Parameters:
997: # scriptline - A line to validate (\n has been stripped for what it's worth).
1.167 foxr 998: #
1.168 foxr 999: # Return:
1000: # 0 - Invalid scriptline.
1001: # 1 - Valid scriptline
1002: # NOTE:
1003: # Only the command syntax is checked, not the executability of the
1004: # command.
1005: #
1006: sub isValidEditCommand {
1007: my $scriptline = shift;
1008:
1009: # Line elements are pipe separated:
1010:
1011: my ($command, $key, $newline) = split(/\|/, $scriptline);
1012: &logthis('<font color="green"> isValideditCommand checking: '.
1013: "Command = '$command', Key = '$key', Newline = '$newline' </font>\n");
1014:
1015: if ($command eq "delete") {
1016: #
1017: # key with no newline.
1018: #
1019: if( ($key eq "") || ($newline ne "")) {
1020: return 0; # Must have key but no newline.
1021: } else {
1022: return 1; # Valid syntax.
1023: }
1.169 foxr 1024: } elsif ($command eq "replace") {
1.168 foxr 1025: #
1026: # key and newline:
1027: #
1028: if (($key eq "") || ($newline eq "")) {
1029: return 0;
1030: } else {
1031: return 1;
1032: }
1.169 foxr 1033: } elsif ($command eq "append") {
1034: if (($key ne "") && ($newline eq "")) {
1035: return 1;
1036: } else {
1037: return 0;
1038: }
1.168 foxr 1039: } else {
1040: return 0; # Invalid command.
1041: }
1042: return 0; # Should not get here!!!
1043: }
1.169 foxr 1044: #
1045: # ApplyEdit - Applies an edit command to a line in a configuration
1046: # file. It is the caller's responsiblity to validate the
1047: # edit line.
1048: # Parameters:
1049: # $directive - A single edit directive to apply.
1050: # Edit directives are of the form:
1051: # append|newline - Appends a new line to the file.
1052: # replace|key|newline - Replaces the line with key value 'key'
1053: # delete|key - Deletes the line with key value 'key'.
1054: # $editor - A config file editor object that contains the
1055: # file being edited.
1056: #
1057: sub ApplyEdit {
1.192 foxr 1058:
1059: my ($directive, $editor) = @_;
1.169 foxr 1060:
1061: # Break the directive down into its command and its parameters
1062: # (at most two at this point. The meaning of the parameters, if in fact
1063: # they exist depends on the command).
1064:
1065: my ($command, $p1, $p2) = split(/\|/, $directive);
1066:
1067: if($command eq "append") {
1068: $editor->Append($p1); # p1 - key p2 null.
1069: } elsif ($command eq "replace") {
1070: $editor->ReplaceLine($p1, $p2); # p1 - key p2 = newline.
1071: } elsif ($command eq "delete") {
1072: $editor->DeleteLine($p1); # p1 - key p2 null.
1073: } else { # Should not get here!!!
1074: die "Invalid command given to ApplyEdit $command"
1075: }
1076: }
1077: #
1078: # AdjustOurHost:
1079: # Adjusts a host file stored in a configuration file editor object
1080: # for the true IP address of this host. This is necessary for hosts
1081: # that live behind a firewall.
1082: # Those hosts have a publicly distributed IP of the firewall, but
1083: # internally must use their actual IP. We assume that a given
1084: # host only has a single IP interface for now.
1085: # Formal Parameters:
1086: # editor - The configuration file editor to adjust. This
1087: # editor is assumed to contain a hosts.tab file.
1088: # Strategy:
1089: # - Figure out our hostname.
1090: # - Lookup the entry for this host.
1091: # - Modify the line to contain our IP
1092: # - Do a replace for this host.
1093: sub AdjustOurHost {
1094: my $editor = shift;
1095:
1096: # figure out who I am.
1097:
1098: my $myHostName = $perlvar{'lonHostID'}; # LonCAPA hostname.
1099:
1100: # Get my host file entry.
1101:
1102: my $ConfigLine = $editor->Find($myHostName);
1103: if(! (defined $ConfigLine)) {
1104: die "AdjustOurHost - no entry for me in hosts file $myHostName";
1105: }
1106: # figure out my IP:
1107: # Use the config line to get my hostname.
1108: # Use gethostbyname to translate that into an IP address.
1109: #
1.338 albertel 1110: my ($id,$domain,$role,$name,$maxcon,$idleto,$mincon) = split(/:/,$ConfigLine);
1.169 foxr 1111: #
1112: # Reassemble the config line from the elements in the list.
1113: # Note that if the loncnew items were not present before, they will
1114: # be now even if they would be empty
1115: #
1116: my $newConfigLine = $id;
1.338 albertel 1117: foreach my $item ($domain, $role, $name, $maxcon, $idleto, $mincon) {
1.169 foxr 1118: $newConfigLine .= ":".$item;
1119: }
1120: # Replace the line:
1121:
1122: $editor->ReplaceLine($id, $newConfigLine);
1123:
1124: }
1125: #
1126: # ReplaceConfigFile:
1127: # Replaces a configuration file with the contents of a
1128: # configuration file editor object.
1129: # This is done by:
1130: # - Copying the target file to <filename>.old
1131: # - Writing the new file to <filename>.tmp
1132: # - Moving <filename.tmp> -> <filename>
1133: # This laborious process ensures that the system is never without
1134: # a configuration file that's at least valid (even if the contents
1135: # may be dated).
1136: # Parameters:
1137: # filename - Name of the file to modify... this is a full path.
1138: # editor - Editor containing the file.
1139: #
1140: sub ReplaceConfigFile {
1.192 foxr 1141:
1142: my ($filename, $editor) = @_;
1.168 foxr 1143:
1.169 foxr 1144: CopyFile ($filename, $filename.".old");
1145:
1146: my $contents = $editor->Get(); # Get the contents of the file.
1147:
1148: InstallFile($filename, $contents);
1149: }
1.168 foxr 1150: #
1151: #
1152: # Called to edit a configuration table file
1.167 foxr 1153: # Parameters:
1154: # request - The entire command/request sent by lonc or lonManage
1155: # Return:
1156: # The reply to send to the client.
1.168 foxr 1157: #
1.167 foxr 1158: sub EditFile {
1159: my $request = shift;
1160:
1161: # Split the command into it's pieces: edit:filetype:script
1162:
1.339 albertel 1163: my ($cmd, $filetype, $script) = split(/:/, $request,3); # : in script
1.167 foxr 1164:
1165: # Check the pre-coditions for success:
1166:
1.339 albertel 1167: if($cmd != "edit") { # Something is amiss afoot alack.
1.167 foxr 1168: return "error:edit request detected, but request != 'edit'\n";
1169: }
1170: if( ($filetype ne "hosts") &&
1171: ($filetype ne "domain")) {
1172: return "error:edit requested with invalid file specifier: $filetype \n";
1173: }
1174:
1175: # Split the edit script and check it's validity.
1.168 foxr 1176:
1177: my @scriptlines = split(/\n/, $script); # one line per element.
1178: my $linecount = scalar(@scriptlines);
1179: for(my $i = 0; $i < $linecount; $i++) {
1180: chomp($scriptlines[$i]);
1181: if(!isValidEditCommand($scriptlines[$i])) {
1182: return "error:edit with bad script line: '$scriptlines[$i]' \n";
1183: }
1184: }
1.145 foxr 1185:
1.167 foxr 1186: # Execute the edit operation.
1.169 foxr 1187: # - Create a config file editor for the appropriate file and
1188: # - execute each command in the script:
1189: #
1190: my $configfile = ConfigFileFromSelector($filetype);
1191: if (!(defined $configfile)) {
1192: return "refused\n";
1193: }
1194: my $editor = ConfigFileEdit->new($configfile);
1.167 foxr 1195:
1.169 foxr 1196: for (my $i = 0; $i < $linecount; $i++) {
1197: ApplyEdit($scriptlines[$i], $editor);
1198: }
1199: # If the file is the host file, ensure that our host is
1200: # adjusted to have our ip:
1201: #
1202: if($filetype eq "host") {
1203: AdjustOurHost($editor);
1204: }
1205: # Finally replace the current file with our file.
1206: #
1207: ReplaceConfigFile($configfile, $editor);
1.167 foxr 1208:
1209: return "ok\n";
1210: }
1.207 foxr 1211:
1.255 foxr 1212: # read_profile
1213: #
1214: # Returns a set of specific entries from a user's profile file.
1215: # this is a utility function that is used by both get_profile_entry and
1216: # get_profile_entry_encrypted.
1217: #
1218: # Parameters:
1219: # udom - Domain in which the user exists.
1220: # uname - User's account name (loncapa account)
1221: # namespace - The profile namespace to open.
1222: # what - A set of & separated queries.
1223: # Returns:
1224: # If all ok: - The string that needs to be shipped back to the user.
1225: # If failure - A string that starts with error: followed by the failure
1226: # reason.. note that this probabyl gets shipped back to the
1227: # user as well.
1228: #
1229: sub read_profile {
1230: my ($udom, $uname, $namespace, $what) = @_;
1231:
1232: my $hashref = &tie_user_hash($udom, $uname, $namespace,
1233: &GDBM_READER());
1234: if ($hashref) {
1235: my @queries=split(/\&/,$what);
1.440 raeburn 1236: if ($namespace eq 'roles') {
1237: @queries = map { &unescape($_); } @queries;
1238: }
1.255 foxr 1239: my $qresult='';
1240:
1241: for (my $i=0;$i<=$#queries;$i++) {
1242: $qresult.="$hashref->{$queries[$i]}&"; # Presumably failure gives empty string.
1243: }
1244: $qresult=~s/\&$//; # Remove trailing & from last lookup.
1.311 albertel 1245: if (&untie_user_hash($hashref)) {
1.255 foxr 1246: return $qresult;
1247: } else {
1248: return "error: ".($!+0)." untie (GDBM) Failed";
1249: }
1250: } else {
1251: if ($!+0 == 2) {
1252: return "error:No such file or GDBM reported bad block error";
1253: } else {
1254: return "error: ".($!+0)." tie (GDBM) Failed";
1255: }
1256: }
1257:
1258: }
1.214 foxr 1259: #--------------------- Request Handlers --------------------------------------------
1260: #
1.215 foxr 1261: # By convention each request handler registers itself prior to the sub
1262: # declaration:
1.214 foxr 1263: #
1264:
1.216 foxr 1265: #++
1266: #
1.214 foxr 1267: # Handles ping requests.
1268: # Parameters:
1269: # $cmd - the actual keyword that invoked us.
1270: # $tail - the tail of the request that invoked us.
1271: # $replyfd- File descriptor connected to the client
1272: # Implicit Inputs:
1273: # $currenthostid - Global variable that carries the name of the host we are
1274: # known as.
1275: # Returns:
1276: # 1 - Ok to continue processing.
1277: # 0 - Program should exit.
1278: # Side effects:
1279: # Reply information is sent to the client.
1280: sub ping_handler {
1281: my ($cmd, $tail, $client) = @_;
1282: Debug("$cmd $tail $client .. $currenthostid:");
1283:
1.387 albertel 1284: Reply( $client,\$currenthostid,"$cmd:$tail");
1.214 foxr 1285:
1286: return 1;
1287: }
1288: ®ister_handler("ping", \&ping_handler, 0, 1, 1); # Ping unencoded, client or manager.
1289:
1.216 foxr 1290: #++
1.215 foxr 1291: #
1292: # Handles pong requests. Pong replies with our current host id, and
1293: # the results of a ping sent to us via our lonc.
1294: #
1295: # Parameters:
1296: # $cmd - the actual keyword that invoked us.
1297: # $tail - the tail of the request that invoked us.
1298: # $replyfd- File descriptor connected to the client
1299: # Implicit Inputs:
1300: # $currenthostid - Global variable that carries the name of the host we are
1301: # connected to.
1302: # Returns:
1303: # 1 - Ok to continue processing.
1304: # 0 - Program should exit.
1305: # Side effects:
1306: # Reply information is sent to the client.
1307: sub pong_handler {
1308: my ($cmd, $tail, $replyfd) = @_;
1309:
1.365 albertel 1310: my $reply=&Apache::lonnet::reply("ping",$clientname);
1.215 foxr 1311: &Reply( $replyfd, "$currenthostid:$reply\n", "$cmd:$tail");
1312: return 1;
1313: }
1314: ®ister_handler("pong", \&pong_handler, 0, 1, 1); # Pong unencoded, client or manager
1315:
1.216 foxr 1316: #++
1317: # Called to establish an encrypted session key with the remote client.
1318: # Note that with secure lond, in most cases this function is never
1319: # invoked. Instead, the secure session key is established either
1320: # via a local file that's locked down tight and only lives for a short
1321: # time, or via an ssl tunnel...and is generated from a bunch-o-random
1322: # bits from /dev/urandom, rather than the predictable pattern used by
1323: # by this sub. This sub is only used in the old-style insecure
1324: # key negotiation.
1325: # Parameters:
1326: # $cmd - the actual keyword that invoked us.
1327: # $tail - the tail of the request that invoked us.
1328: # $replyfd- File descriptor connected to the client
1329: # Implicit Inputs:
1330: # $currenthostid - Global variable that carries the name of the host
1331: # known as.
1.448 raeburn 1332: # $clientname - Global variable that carries the name of the host we're connected to.
1.216 foxr 1333: # Returns:
1334: # 1 - Ok to continue processing.
1335: # 0 - Program should exit.
1336: # Implicit Outputs:
1337: # Reply information is sent to the client.
1338: # $cipher is set with a reference to a new IDEA encryption object.
1339: #
1340: sub establish_key_handler {
1341: my ($cmd, $tail, $replyfd) = @_;
1342:
1343: my $buildkey=time.$$.int(rand 100000);
1344: $buildkey=~tr/1-6/A-F/;
1345: $buildkey=int(rand 100000).$buildkey.int(rand 100000);
1346: my $key=$currenthostid.$clientname;
1347: $key=~tr/a-z/A-Z/;
1348: $key=~tr/G-P/0-9/;
1349: $key=~tr/Q-Z/0-9/;
1350: $key=$key.$buildkey.$key.$buildkey.$key.$buildkey;
1351: $key=substr($key,0,32);
1352: my $cipherkey=pack("H32",$key);
1353: $cipher=new IDEA $cipherkey;
1.387 albertel 1354: &Reply($replyfd, \$buildkey, "$cmd:$tail");
1.216 foxr 1355:
1356: return 1;
1357:
1358: }
1359: ®ister_handler("ekey", \&establish_key_handler, 0, 1,1);
1360:
1.217 foxr 1361: # Handler for the load command. Returns the current system load average
1362: # to the requestor.
1363: #
1364: # Parameters:
1365: # $cmd - the actual keyword that invoked us.
1366: # $tail - the tail of the request that invoked us.
1367: # $replyfd- File descriptor connected to the client
1368: # Implicit Inputs:
1369: # $currenthostid - Global variable that carries the name of the host
1370: # known as.
1.448 raeburn 1371: # $clientname - Global variable that carries the name of the host we're connected to.
1.217 foxr 1372: # Returns:
1373: # 1 - Ok to continue processing.
1374: # 0 - Program should exit.
1375: # Side effects:
1376: # Reply information is sent to the client.
1377: sub load_handler {
1378: my ($cmd, $tail, $replyfd) = @_;
1379:
1.463 foxr 1380:
1381:
1.217 foxr 1382: # Get the load average from /proc/loadavg and calculate it as a percentage of
1383: # the allowed load limit as set by the perl global variable lonLoadLim
1384:
1385: my $loadavg;
1386: my $loadfile=IO::File->new('/proc/loadavg');
1387:
1388: $loadavg=<$loadfile>;
1389: $loadavg =~ s/\s.*//g; # Extract the first field only.
1390:
1391: my $loadpercent=100*$loadavg/$perlvar{'lonLoadLim'};
1392:
1.387 albertel 1393: &Reply( $replyfd, \$loadpercent, "$cmd:$tail");
1.217 foxr 1394:
1395: return 1;
1396: }
1.263 albertel 1397: ®ister_handler("load", \&load_handler, 0, 1, 0);
1.217 foxr 1398:
1399: #
1400: # Process the userload request. This sub returns to the client the current
1401: # user load average. It can be invoked either by clients or managers.
1402: #
1403: # Parameters:
1404: # $cmd - the actual keyword that invoked us.
1405: # $tail - the tail of the request that invoked us.
1406: # $replyfd- File descriptor connected to the client
1407: # Implicit Inputs:
1408: # $currenthostid - Global variable that carries the name of the host
1409: # known as.
1.448 raeburn 1410: # $clientname - Global variable that carries the name of the host we're connected to.
1.217 foxr 1411: # Returns:
1412: # 1 - Ok to continue processing.
1413: # 0 - Program should exit
1414: # Implicit inputs:
1415: # whatever the userload() function requires.
1416: # Implicit outputs:
1417: # the reply is written to the client.
1418: #
1419: sub user_load_handler {
1420: my ($cmd, $tail, $replyfd) = @_;
1421:
1.365 albertel 1422: my $userloadpercent=&Apache::lonnet::userload();
1.387 albertel 1423: &Reply($replyfd, \$userloadpercent, "$cmd:$tail");
1.217 foxr 1424:
1425: return 1;
1426: }
1.263 albertel 1427: ®ister_handler("userload", \&user_load_handler, 0, 1, 0);
1.217 foxr 1428:
1.218 foxr 1429: # Process a request for the authorization type of a user:
1430: # (userauth).
1431: #
1432: # Parameters:
1433: # $cmd - the actual keyword that invoked us.
1434: # $tail - the tail of the request that invoked us.
1435: # $replyfd- File descriptor connected to the client
1436: # Returns:
1437: # 1 - Ok to continue processing.
1438: # 0 - Program should exit
1439: # Implicit outputs:
1440: # The user authorization type is written to the client.
1441: #
1442: sub user_authorization_type {
1443: my ($cmd, $tail, $replyfd) = @_;
1444:
1445: my $userinput = "$cmd:$tail";
1446:
1447: # Pull the domain and username out of the command tail.
1.222 foxr 1448: # and call get_auth_type to determine the authentication type.
1.218 foxr 1449:
1450: my ($udom,$uname)=split(/:/,$tail);
1.222 foxr 1451: my $result = &get_auth_type($udom, $uname);
1.218 foxr 1452: if($result eq "nouser") {
1453: &Failure( $replyfd, "unknown_user\n", $userinput);
1454: } else {
1455: #
1.222 foxr 1456: # We only want to pass the second field from get_auth_type
1.218 foxr 1457: # for ^krb.. otherwise we'll be handing out the encrypted
1458: # password for internals e.g.
1459: #
1460: my ($type,$otherinfo) = split(/:/,$result);
1461: if($type =~ /^krb/) {
1462: $type = $result;
1.269 raeburn 1463: } else {
1464: $type .= ':';
1465: }
1.387 albertel 1466: &Reply( $replyfd, \$type, $userinput);
1.218 foxr 1467: }
1468:
1469: return 1;
1470: }
1471: ®ister_handler("currentauth", \&user_authorization_type, 1, 1, 0);
1472:
1473: # Process a request by a manager to push a hosts or domain table
1474: # to us. We pick apart the command and pass it on to the subs
1475: # that already exist to do this.
1476: #
1477: # Parameters:
1478: # $cmd - the actual keyword that invoked us.
1479: # $tail - the tail of the request that invoked us.
1480: # $client - File descriptor connected to the client
1481: # Returns:
1482: # 1 - Ok to continue processing.
1483: # 0 - Program should exit
1484: # Implicit Output:
1485: # a reply is written to the client.
1486: sub push_file_handler {
1487: my ($cmd, $tail, $client) = @_;
1.412 foxr 1488: &Debug("In push file handler");
1.218 foxr 1489: my $userinput = "$cmd:$tail";
1490:
1491: # At this time we only know that the IP of our partner is a valid manager
1492: # the code below is a hook to do further authentication (e.g. to resolve
1493: # spoofing).
1494:
1495: my $cert = &GetCertificate($userinput);
1.412 foxr 1496: if(&ValidManager($cert)) {
1497: &Debug("Valid manager: $client");
1.218 foxr 1498:
1499: # Now presumably we have the bona fides of both the peer host and the
1500: # process making the request.
1501:
1502: my $reply = &PushFile($userinput);
1.387 albertel 1503: &Reply($client, \$reply, $userinput);
1.218 foxr 1504:
1505: } else {
1.412 foxr 1506: &logthis("push_file_handler $client is not valid");
1.218 foxr 1507: &Failure( $client, "refused\n", $userinput);
1508: }
1.219 foxr 1509: return 1;
1.218 foxr 1510: }
1511: ®ister_handler("pushfile", \&push_file_handler, 1, 0, 1);
1512:
1.399 raeburn 1513: # The du_handler routine should be considered obsolete and is retained
1514: # for communication with legacy servers. Please see the du2_handler.
1.243 banghart 1515: #
1.399 raeburn 1516: # du - list the disk usage of a directory recursively.
1.243 banghart 1517: #
1518: # note: stolen code from the ls file handler
1519: # under construction by Rick Banghart
1520: # .
1521: # Parameters:
1522: # $cmd - The command that dispatched us (du).
1523: # $ududir - The directory path to list... I'm not sure what this
1524: # is relative as things like ls:. return e.g.
1525: # no_such_dir.
1526: # $client - Socket open on the client.
1527: # Returns:
1528: # 1 - indicating that the daemon should not disconnect.
1529: # Side Effects:
1530: # The reply is written to $client.
1531: #
1532: sub du_handler {
1533: my ($cmd, $ududir, $client) = @_;
1.339 albertel 1534: ($ududir) = split(/:/,$ududir); # Make 'telnet' testing easier.
1.251 foxr 1535: my $userinput = "$cmd:$ududir";
1536:
1.245 albertel 1537: if ($ududir=~/\.\./ || $ududir!~m|^/home/httpd/|) {
1538: &Failure($client,"refused\n","$cmd:$ududir");
1539: return 1;
1540: }
1.249 foxr 1541: # Since $ududir could have some nasties in it,
1542: # we will require that ududir is a valid
1543: # directory. Just in case someone tries to
1544: # slip us a line like .;(cd /home/httpd rm -rf*)
1545: # etc.
1546: #
1547: if (-d $ududir) {
1.292 albertel 1548: my $total_size=0;
1549: my $code=sub {
1550: if ($_=~/\.\d+\./) { return;}
1551: if ($_=~/\.meta$/) { return;}
1.362 albertel 1552: if (-d $_) { return;}
1.292 albertel 1553: $total_size+=(stat($_))[7];
1554: };
1.295 raeburn 1555: chdir($ududir);
1.292 albertel 1556: find($code,$ududir);
1557: $total_size=int($total_size/1024);
1.387 albertel 1558: &Reply($client,\$total_size,"$cmd:$ududir");
1.249 foxr 1559: } else {
1.251 foxr 1560: &Failure($client, "bad_directory:$ududir\n","$cmd:$ududir");
1.249 foxr 1561: }
1.243 banghart 1562: return 1;
1563: }
1564: ®ister_handler("du", \&du_handler, 0, 1, 0);
1.218 foxr 1565:
1.399 raeburn 1566: # Please also see the du_handler, which is obsoleted by du2.
1567: # du2_handler differs from du_handler in that required path to directory
1568: # provided by &propath() is prepended in the handler instead of on the
1569: # client side.
1.239 foxr 1570: #
1.399 raeburn 1571: # du2 - list the disk usage of a directory recursively.
1572: #
1573: # Parameters:
1574: # $cmd - The command that dispatched us (du).
1575: # $tail - The tail of the request that invoked us.
1576: # $tail is a : separated list of the following:
1577: # - $ududir - directory path to list (before prepending)
1578: # - $getpropath = 1 if &propath() should prepend
1579: # - $uname - username to use for &propath or user dir
1580: # - $udom - domain to use for &propath or user dir
1581: # All are escaped.
1582: # $client - Socket open on the client.
1583: # Returns:
1584: # 1 - indicating that the daemon should not disconnect.
1585: # Side Effects:
1586: # The reply is written to $client.
1587: #
1588:
1589: sub du2_handler {
1590: my ($cmd, $tail, $client) = @_;
1591: my ($ududir,$getpropath,$uname,$udom) = map { &unescape($_) } (split(/:/, $tail));
1592: my $userinput = "$cmd:$tail";
1593: if (($ududir=~/\.\./) || (($ududir!~m|^/home/httpd/|) && (!$getpropath))) {
1594: &Failure($client,"refused\n","$cmd:$tail");
1595: return 1;
1596: }
1597: if ($getpropath) {
1598: if (($uname =~ /^$LONCAPA::match_name$/) && ($udom =~ /^$LONCAPA::match_domain$/)) {
1599: $ududir = &propath($udom,$uname).'/'.$ududir;
1600: } else {
1601: &Failure($client,"refused\n","$cmd:$tail");
1602: return 1;
1603: }
1604: }
1605: # Since $ududir could have some nasties in it,
1606: # we will require that ududir is a valid
1607: # directory. Just in case someone tries to
1608: # slip us a line like .;(cd /home/httpd rm -rf*)
1609: # etc.
1610: #
1611: if (-d $ududir) {
1612: my $total_size=0;
1613: my $code=sub {
1614: if ($_=~/\.\d+\./) { return;}
1615: if ($_=~/\.meta$/) { return;}
1616: if (-d $_) { return;}
1617: $total_size+=(stat($_))[7];
1618: };
1619: chdir($ududir);
1620: find($code,$ududir);
1621: $total_size=int($total_size/1024);
1622: &Reply($client,\$total_size,"$cmd:$ududir");
1623: } else {
1624: &Failure($client, "bad_directory:$ududir\n","$cmd:$tail");
1625: }
1626: return 1;
1627: }
1628: ®ister_handler("du2", \&du2_handler, 0, 1, 0);
1629:
1630: #
1631: # The ls_handler routine should be considered obsolete and is retained
1632: # for communication with legacy servers. Please see the ls3_handler.
1.280 matthew 1633: #
1.239 foxr 1634: # ls - list the contents of a directory. For each file in the
1635: # selected directory the filename followed by the full output of
1636: # the stat function is returned. The returned info for each
1637: # file are separated by ':'. The stat fields are separated by &'s.
1.529 raeburn 1638: #
1639: # If the requested path contains /../ or is:
1640: #
1641: # 1. for a directory, and the path does not begin with one of:
1.530 raeburn 1642: # (a) /home/httpd/html/res/<domain>
1.539 raeburn 1643: # (b) /home/httpd/html/userfiles/
1.529 raeburn 1644: # (c) /home/httpd/lonUsers/<domain>/<1>/<2>/<3>/<username>/userfiles
1645: # or is:
1646: #
1.538 raeburn 1647: # 2. for a file, and the path (after prepending) does not begin with one of:
1.539 raeburn 1648: # (a) /home/httpd/lonUsers/<domain>/<1>/<2>/<3>/<username>/
1649: # (b) /home/httpd/html/res/<domain>/<username>/
1650: # (c) /home/httpd/html/userfiles/<domain>/<username>/
1.529 raeburn 1651: #
1652: # the response will be "refused".
1653: #
1.239 foxr 1654: # Parameters:
1655: # $cmd - The command that dispatched us (ls).
1656: # $ulsdir - The directory path to list... I'm not sure what this
1657: # is relative as things like ls:. return e.g.
1658: # no_such_dir.
1659: # $client - Socket open on the client.
1660: # Returns:
1661: # 1 - indicating that the daemon should not disconnect.
1662: # Side Effects:
1663: # The reply is written to $client.
1664: #
1665: sub ls_handler {
1.280 matthew 1666: # obsoleted by ls2_handler
1.239 foxr 1667: my ($cmd, $ulsdir, $client) = @_;
1668:
1669: my $userinput = "$cmd:$ulsdir";
1670:
1671: my $obs;
1672: my $rights;
1673: my $ulsout='';
1674: my $ulsfn;
1.529 raeburn 1675: if ($ulsdir =~m{/\.\./}) {
1676: &Failure($client,"refused\n",$userinput);
1677: return 1;
1678: }
1.239 foxr 1679: if (-e $ulsdir) {
1680: if(-d $ulsdir) {
1.539 raeburn 1681: unless (($ulsdir =~ m{^/home/httpd/html/(res/$LONCAPA::match_domain|userfiles/)}) ||
1682: ($ulsdir =~ m{^/home/httpd/lonUsers/$LONCAPA::match_domain(?:/[\w\-.@]){3}/$LONCAPA::match_name/userfiles})) {
1.529 raeburn 1683: &Failure($client,"refused\n",$userinput);
1684: return 1;
1685: }
1.239 foxr 1686: if (opendir(LSDIR,$ulsdir)) {
1687: while ($ulsfn=readdir(LSDIR)) {
1.291 albertel 1688: undef($obs);
1689: undef($rights);
1.239 foxr 1690: my @ulsstats=stat($ulsdir.'/'.$ulsfn);
1691: #We do some obsolete checking here
1692: if(-e $ulsdir.'/'.$ulsfn.".meta") {
1693: open(FILE, $ulsdir.'/'.$ulsfn.".meta");
1694: my @obsolete=<FILE>;
1695: foreach my $obsolete (@obsolete) {
1.301 www 1696: if($obsolete =~ m/(<obsolete>)(on|1)/) { $obs = 1; }
1.239 foxr 1697: if($obsolete =~ m|(<copyright>)(default)|) { $rights = 1; }
1698: }
1699: }
1700: $ulsout.=$ulsfn.'&'.join('&',@ulsstats);
1701: if($obs eq '1') { $ulsout.="&1"; }
1702: else { $ulsout.="&0"; }
1703: if($rights eq '1') { $ulsout.="&1:"; }
1704: else { $ulsout.="&0:"; }
1705: }
1706: closedir(LSDIR);
1707: }
1708: } else {
1.539 raeburn 1709: unless (($ulsdir =~ m{^/home/httpd/lonUsers/$LONCAPA::match_domain(?:/[\w\-.@]){3}/$LONCAPA::match_name/}) ||
1710: ($ulsdir =~ m{^/home/httpd/html/(?:res|userfiles)/$LONCAPA::match_domain/$LONCAPA::match_name/})) {
1.529 raeburn 1711: &Failure($client,"refused\n",$userinput);
1712: return 1;
1713: }
1.239 foxr 1714: my @ulsstats=stat($ulsdir);
1715: $ulsout.=$ulsfn.'&'.join('&',@ulsstats).':';
1716: }
1717: } else {
1718: $ulsout='no_such_dir';
1719: }
1720: if ($ulsout eq '') { $ulsout='empty'; }
1.387 albertel 1721: &Reply($client, \$ulsout, $userinput); # This supports debug logging.
1.239 foxr 1722:
1723: return 1;
1724:
1725: }
1726: ®ister_handler("ls", \&ls_handler, 0, 1, 0);
1727:
1.399 raeburn 1728: # The ls2_handler routine should be considered obsolete and is retained
1729: # for communication with legacy servers. Please see the ls3_handler.
1730: # Please also see the ls_handler, which was itself obsoleted by ls2.
1.280 matthew 1731: # ls2_handler differs from ls_handler in that it escapes its return
1732: # values before concatenating them together with ':'s.
1733: #
1734: # ls2 - list the contents of a directory. For each file in the
1735: # selected directory the filename followed by the full output of
1736: # the stat function is returned. The returned info for each
1737: # file are separated by ':'. The stat fields are separated by &'s.
1.529 raeburn 1738: #
1739: # If the requested path contains /../ or is:
1740: #
1741: # 1. for a directory, and the path does not begin with one of:
1.530 raeburn 1742: # (a) /home/httpd/html/res/<domain>
1.539 raeburn 1743: # (b) /home/httpd/html/userfiles/
1.529 raeburn 1744: # (c) /home/httpd/lonUsers/<domain>/<1>/<2>/<3>/<username>/userfiles
1745: # or is:
1746: #
1.538 raeburn 1747: # 2. for a file, and the path (after prepending) does not begin with one of:
1.539 raeburn 1748: # (a) /home/httpd/lonUsers/<domain>/<1>/<2>/<3>/<username>/
1749: # (b) /home/httpd/html/res/<domain>/<username>/
1750: # (c) /home/httpd/html/userfiles/<domain>/<username>/
1.529 raeburn 1751: #
1752: # the response will be "refused".
1753: #
1.280 matthew 1754: # Parameters:
1755: # $cmd - The command that dispatched us (ls).
1756: # $ulsdir - The directory path to list... I'm not sure what this
1757: # is relative as things like ls:. return e.g.
1758: # no_such_dir.
1759: # $client - Socket open on the client.
1760: # Returns:
1761: # 1 - indicating that the daemon should not disconnect.
1762: # Side Effects:
1763: # The reply is written to $client.
1764: #
1765: sub ls2_handler {
1766: my ($cmd, $ulsdir, $client) = @_;
1767:
1768: my $userinput = "$cmd:$ulsdir";
1769:
1770: my $obs;
1771: my $rights;
1772: my $ulsout='';
1773: my $ulsfn;
1.529 raeburn 1774: if ($ulsdir =~m{/\.\./}) {
1775: &Failure($client,"refused\n",$userinput);
1776: return 1;
1777: }
1.280 matthew 1778: if (-e $ulsdir) {
1779: if(-d $ulsdir) {
1.539 raeburn 1780: unless (($ulsdir =~ m{^/home/httpd/html/(res/$LONCAPA::match_domain|userfiles/)}) ||
1781: ($ulsdir =~ m{^/home/httpd/lonUsers/$LONCAPA::match_domain(?:/[\w\-.@]){3}/$LONCAPA::match_name/userfiles})) {
1.529 raeburn 1782: &Failure($client,"refused\n","$userinput");
1783: return 1;
1784: }
1.280 matthew 1785: if (opendir(LSDIR,$ulsdir)) {
1786: while ($ulsfn=readdir(LSDIR)) {
1.291 albertel 1787: undef($obs);
1788: undef($rights);
1.280 matthew 1789: my @ulsstats=stat($ulsdir.'/'.$ulsfn);
1790: #We do some obsolete checking here
1791: if(-e $ulsdir.'/'.$ulsfn.".meta") {
1792: open(FILE, $ulsdir.'/'.$ulsfn.".meta");
1793: my @obsolete=<FILE>;
1794: foreach my $obsolete (@obsolete) {
1.301 www 1795: if($obsolete =~ m/(<obsolete>)(on|1)/) { $obs = 1; }
1.280 matthew 1796: if($obsolete =~ m|(<copyright>)(default)|) {
1797: $rights = 1;
1798: }
1799: }
1800: }
1801: my $tmp = $ulsfn.'&'.join('&',@ulsstats);
1802: if ($obs eq '1') { $tmp.="&1"; } else { $tmp.="&0"; }
1803: if ($rights eq '1') { $tmp.="&1"; } else { $tmp.="&0"; }
1804: $ulsout.= &escape($tmp).':';
1805: }
1806: closedir(LSDIR);
1807: }
1808: } else {
1.539 raeburn 1809: unless (($ulsdir =~ m{^/home/httpd/lonUsers/$LONCAPA::match_domain(?:/[\w\-.@]){3}/$LONCAPA::match_name/}) ||
1810: ($ulsdir =~ m{^/home/httpd/html/(?:res|userfiles)/$LONCAPA::match_domain/$LONCAPA::match_name/})) {
1.529 raeburn 1811: &Failure($client,"refused\n",$userinput);
1812: return 1;
1813: }
1.280 matthew 1814: my @ulsstats=stat($ulsdir);
1815: $ulsout.=$ulsfn.'&'.join('&',@ulsstats).':';
1816: }
1817: } else {
1818: $ulsout='no_such_dir';
1819: }
1820: if ($ulsout eq '') { $ulsout='empty'; }
1.387 albertel 1821: &Reply($client, \$ulsout, $userinput); # This supports debug logging.
1.280 matthew 1822: return 1;
1823: }
1824: ®ister_handler("ls2", \&ls2_handler, 0, 1, 0);
1.399 raeburn 1825: #
1826: # ls3 - list the contents of a directory. For each file in the
1827: # selected directory the filename followed by the full output of
1828: # the stat function is returned. The returned info for each
1829: # file are separated by ':'. The stat fields are separated by &'s.
1.529 raeburn 1830: #
1831: # If the requested path (after prepending) contains /../ or is:
1832: #
1833: # 1. for a directory, and the path does not begin with one of:
1.530 raeburn 1834: # (a) /home/httpd/html/res/<domain>
1.539 raeburn 1835: # (b) /home/httpd/html/userfiles/
1.529 raeburn 1836: # (c) /home/httpd/lonUsers/<domain>/<1>/<2>/<3>/<username>/userfiles
1.539 raeburn 1837: # (d) /home/httpd/html/priv/<domain> and client is the homeserver
1.529 raeburn 1838: #
1.530 raeburn 1839: # or is:
1.529 raeburn 1840: #
1.538 raeburn 1841: # 2. for a file, and the path (after prepending) does not begin with one of:
1.539 raeburn 1842: # (a) /home/httpd/lonUsers/<domain>/<1>/<2>/<3>/<username>/
1843: # (b) /home/httpd/html/res/<domain>/<username>/
1844: # (c) /home/httpd/html/userfiles/<domain>/<username>/
1845: # (d) /home/httpd/html/priv/<domain>/<username>/ and client is the homeserver
1.529 raeburn 1846: #
1847: # the response will be "refused".
1848: #
1.399 raeburn 1849: # Parameters:
1850: # $cmd - The command that dispatched us (ls).
1851: # $tail - The tail of the request that invoked us.
1852: # $tail is a : separated list of the following:
1853: # - $ulsdir - directory path to list (before prepending)
1854: # - $getpropath = 1 if &propath() should prepend
1855: # - $getuserdir = 1 if path to user dir in lonUsers should
1856: # prepend
1857: # - $alternate_root - path to prepend
1858: # - $uname - username to use for &propath or user dir
1859: # - $udom - domain to use for &propath or user dir
1860: # All of these except $getpropath and &getuserdir are escaped.
1861: # no_such_dir.
1862: # $client - Socket open on the client.
1863: # Returns:
1864: # 1 - indicating that the daemon should not disconnect.
1865: # Side Effects:
1866: # The reply is written to $client.
1867: #
1868:
1869: sub ls3_handler {
1870: my ($cmd, $tail, $client) = @_;
1871: my $userinput = "$cmd:$tail";
1872: my ($ulsdir,$getpropath,$getuserdir,$alternate_root,$uname,$udom) =
1873: split(/:/,$tail);
1874: if (defined($ulsdir)) {
1875: $ulsdir = &unescape($ulsdir);
1876: }
1877: if (defined($alternate_root)) {
1878: $alternate_root = &unescape($alternate_root);
1879: }
1880: if (defined($uname)) {
1881: $uname = &unescape($uname);
1882: }
1883: if (defined($udom)) {
1884: $udom = &unescape($udom);
1885: }
1886:
1887: my $dir_root = $perlvar{'lonDocRoot'};
1.529 raeburn 1888: if (($getpropath) || ($getuserdir)) {
1.399 raeburn 1889: if (($uname =~ /^$LONCAPA::match_name$/) && ($udom =~ /^$LONCAPA::match_domain$/)) {
1890: $dir_root = &propath($udom,$uname);
1891: $dir_root =~ s/\/$//;
1892: } else {
1.529 raeburn 1893: &Failure($client,"refused\n",$userinput);
1.399 raeburn 1894: return 1;
1895: }
1.400 raeburn 1896: } elsif ($alternate_root ne '') {
1.399 raeburn 1897: $dir_root = $alternate_root;
1898: }
1.408 raeburn 1899: if (($dir_root ne '') && ($dir_root ne '/')) {
1.400 raeburn 1900: if ($ulsdir =~ /^\//) {
1901: $ulsdir = $dir_root.$ulsdir;
1902: } else {
1903: $ulsdir = $dir_root.'/'.$ulsdir;
1904: }
1.399 raeburn 1905: }
1.529 raeburn 1906: if ($ulsdir =~m{/\.\./}) {
1907: &Failure($client,"refused\n",$userinput);
1908: return 1;
1909: }
1910: my $islocal;
1911: my @machine_ids = &Apache::lonnet::current_machine_ids();
1912: if (grep(/^\Q$clientname\E$/,@machine_ids)) {
1913: $islocal = 1;
1914: }
1.399 raeburn 1915: my $obs;
1916: my $rights;
1917: my $ulsout='';
1918: my $ulsfn;
1.547 raeburn 1919:
1920: my ($crscheck,$toplevel,$currdom,$currnum,$skip);
1921: unless ($islocal) {
1922: my ($major,$minor) = split(/\./,$clientversion);
1923: if (($major < 2) || ($major == 2 && $minor < 12)) {
1924: $crscheck = 1;
1925: }
1926: }
1.399 raeburn 1927: if (-e $ulsdir) {
1928: if(-d $ulsdir) {
1.529 raeburn 1929: unless (($getpropath) || ($getuserdir) ||
1.539 raeburn 1930: ($ulsdir =~ m{^/home/httpd/html/(res/$LONCAPA::match_domain|userfiles/)}) ||
1931: ($ulsdir =~ m{^/home/httpd/lonUsers/$LONCAPA::match_domain(?:/[\w\-.@]){3}/$LONCAPA::match_name/userfiles}) ||
1932: (($ulsdir =~ m{^/home/httpd/html/priv/$LONCAPA::match_domain}) && ($islocal))) {
1.529 raeburn 1933: &Failure($client,"refused\n",$userinput);
1934: return 1;
1935: }
1.547 raeburn 1936: if (($crscheck) &&
1937: ($ulsdir =~ m{^/home/httpd/html/res/($LONCAPA::match_domain)(/?$|/$LONCAPA::match_courseid)})) {
1938: ($currdom,my $posscnum) = ($1,$2);
1939: if (($posscnum eq '') || ($posscnum eq '/')) {
1940: $toplevel = 1;
1941: } else {
1942: $posscnum =~ s{^/+}{};
1943: if (&LONCAPA::Lond::is_course($currdom,$posscnum)) {
1944: $skip = 1;
1945: }
1946: }
1947: }
1948: if ((!$skip) && (opendir(LSDIR,$ulsdir))) {
1.399 raeburn 1949: while ($ulsfn=readdir(LSDIR)) {
1.547 raeburn 1950: if (($crscheck) && ($toplevel) && ($currdom ne '') &&
1951: ($ulsfn =~ /^$LONCAPA::match_courseid$/) && (-d "$ulsdir/$ulsfn")) {
1952: if (&LONCAPA::Lond::is_course($currdom,$ulsfn)) {
1953: next;
1954: }
1955: }
1.399 raeburn 1956: undef($obs);
1957: undef($rights);
1958: my @ulsstats=stat($ulsdir.'/'.$ulsfn);
1959: #We do some obsolete checking here
1960: if(-e $ulsdir.'/'.$ulsfn.".meta") {
1961: open(FILE, $ulsdir.'/'.$ulsfn.".meta");
1962: my @obsolete=<FILE>;
1963: foreach my $obsolete (@obsolete) {
1964: if($obsolete =~ m/(<obsolete>)(on|1)/) { $obs = 1; }
1965: if($obsolete =~ m|(<copyright>)(default)|) {
1966: $rights = 1;
1967: }
1968: }
1969: }
1970: my $tmp = $ulsfn.'&'.join('&',@ulsstats);
1971: if ($obs eq '1') { $tmp.="&1"; } else { $tmp.="&0"; }
1972: if ($rights eq '1') { $tmp.="&1"; } else { $tmp.="&0"; }
1973: $ulsout.= &escape($tmp).':';
1974: }
1975: closedir(LSDIR);
1976: }
1977: } else {
1.529 raeburn 1978: unless (($getpropath) || ($getuserdir) ||
1.539 raeburn 1979: ($ulsdir =~ m{^/home/httpd/lonUsers/$LONCAPA::match_domain(?:/[\w\-.@]){3}/$LONCAPA::match_name/}) ||
1980: ($ulsdir =~ m{^/home/httpd/html/(?:res|userfiles)/$LONCAPA::match_domain/$LONCAPA::match_name/}) ||
1981: (($ulsdir =~ m{^/home/httpd/html/priv/$LONCAPA::match_domain/$LONCAPA::match_name/}) && ($islocal))) {
1.529 raeburn 1982: &Failure($client,"refused\n",$userinput);
1983: return 1;
1984: }
1.399 raeburn 1985: my @ulsstats=stat($ulsdir);
1986: $ulsout.=$ulsfn.'&'.join('&',@ulsstats).':';
1987: }
1988: } else {
1989: $ulsout='no_such_dir';
1.400 raeburn 1990: }
1991: if ($ulsout eq '') { $ulsout='empty'; }
1992: &Reply($client, \$ulsout, $userinput); # This supports debug logging.
1993: return 1;
1.399 raeburn 1994: }
1995: ®ister_handler("ls3", \&ls3_handler, 0, 1, 0);
1.280 matthew 1996:
1.477 raeburn 1997: sub read_lonnet_global {
1998: my ($cmd,$tail,$client) = @_;
1999: my $userinput = "$cmd:$tail";
2000: my $requested = &Apache::lonnet::thaw_unescape($tail);
2001: my $result;
1.480 raeburn 2002: my %packagevars = (
2003: spareid => \%Apache::lonnet::spareid,
2004: perlvar => \%Apache::lonnet::perlvar,
2005: );
2006: my %limit_to = (
2007: perlvar => {
1.531 raeburn 2008: lonOtherAuthen => 1,
2009: lonBalancer => 1,
2010: lonVersion => 1,
2011: lonAdmEMail => 1,
2012: lonSupportEMail => 1,
2013: lonSysEMail => 1,
2014: lonHostID => 1,
2015: lonRole => 1,
2016: lonDefDomain => 1,
2017: lonLoadLim => 1,
2018: lonUserLoadLim => 1,
1.480 raeburn 2019: }
2020: );
1.477 raeburn 2021: if (ref($requested) eq 'HASH') {
2022: foreach my $what (keys(%{$requested})) {
2023: my $response;
1.480 raeburn 2024: my $items = {};
2025: if (exists($packagevars{$what})) {
2026: if (ref($limit_to{$what}) eq 'HASH') {
2027: foreach my $varname (keys(%{$packagevars{$what}})) {
2028: if ($limit_to{$what}{$varname}) {
2029: $items->{$varname} = $packagevars{$what}{$varname};
2030: }
2031: }
2032: } else {
2033: $items = $packagevars{$what};
1.477 raeburn 2034: }
1.480 raeburn 2035: if ($what eq 'perlvar') {
2036: if (!exists($packagevars{$what}{'lonBalancer'})) {
1.559 raeburn 2037: if ($dist =~ /^(centos|rhes|fedora|scientific|oracle)/) {
1.480 raeburn 2038: my $othervarref=LONCAPA::Configuration::read_conf('httpd.conf');
2039: if (ref($othervarref) eq 'HASH') {
2040: $items->{'lonBalancer'} = $othervarref->{'lonBalancer'};
2041: }
2042: }
2043: }
1.477 raeburn 2044: }
1.480 raeburn 2045: $response = &Apache::lonnet::freeze_escape($items);
1.477 raeburn 2046: }
1.478 raeburn 2047: $result .= &escape($what).'='.$response.'&';
1.477 raeburn 2048: }
2049: }
2050: $result =~ s/\&$//;
2051: &Reply($client,\$result,$userinput);
2052: return 1;
2053: }
2054: ®ister_handler("readlonnetglobal", \&read_lonnet_global, 0, 1, 0);
2055:
1.479 raeburn 2056: sub server_devalidatecache_handler {
2057: my ($cmd,$tail,$client) = @_;
2058: my $userinput = "$cmd:$tail";
1.503 raeburn 2059: my $items = &unescape($tail);
2060: my @cached = split(/\&/,$items);
2061: foreach my $key (@cached) {
2062: if ($key =~ /:/) {
2063: my ($name,$id) = map { &unescape($_); } split(/:/,$key);
2064: &Apache::lonnet::devalidate_cache_new($name,$id);
2065: }
2066: }
1.479 raeburn 2067: my $result = 'ok';
2068: &Reply($client,\$result,$userinput);
2069: return 1;
2070: }
1.481 raeburn 2071: ®ister_handler("devalidatecache", \&server_devalidatecache_handler, 0, 1, 0);
1.479 raeburn 2072:
1.410 raeburn 2073: sub server_timezone_handler {
2074: my ($cmd,$tail,$client) = @_;
2075: my $userinput = "$cmd:$tail";
2076: my $timezone;
2077: my $clockfile = '/etc/sysconfig/clock'; # Fedora/CentOS/SuSE
2078: my $tzfile = '/etc/timezone'; # Debian/Ubuntu
2079: if (-e $clockfile) {
2080: if (open(my $fh,"<$clockfile")) {
2081: while (<$fh>) {
2082: next if (/^[\#\s]/);
2083: if (/^(?:TIME)?ZONE\s*=\s*['"]?\s*([\w\/]+)/) {
2084: $timezone = $1;
2085: last;
2086: }
2087: }
2088: close($fh);
2089: }
2090: } elsif (-e $tzfile) {
2091: if (open(my $fh,"<$tzfile")) {
2092: $timezone = <$fh>;
2093: close($fh);
2094: chomp($timezone);
2095: if ($timezone =~ m{^Etc/(\w+)$}) {
2096: $timezone = $1;
2097: }
2098: }
2099: }
2100: &Reply($client,\$timezone,$userinput); # This supports debug logging.
2101: return 1;
2102: }
2103: ®ister_handler("servertimezone", \&server_timezone_handler, 0, 1, 0);
2104:
1.413 raeburn 2105: sub server_loncaparev_handler {
2106: my ($cmd,$tail,$client) = @_;
2107: my $userinput = "$cmd:$tail";
2108: &Reply($client,\$perlvar{'lonVersion'},$userinput);
2109: return 1;
2110: }
2111: ®ister_handler("serverloncaparev", \&server_loncaparev_handler, 0, 1, 0);
2112:
1.448 raeburn 2113: sub server_homeID_handler {
2114: my ($cmd,$tail,$client) = @_;
2115: my $userinput = "$cmd:$tail";
2116: &Reply($client,\$perlvar{'lonHostID'},$userinput);
2117: return 1;
2118: }
2119: ®ister_handler("serverhomeID", \&server_homeID_handler, 0, 1, 0);
2120:
1.471 raeburn 2121: sub server_distarch_handler {
2122: my ($cmd,$tail,$client) = @_;
2123: my $userinput = "$cmd:$tail";
2124: my $reply = &distro_and_arch();
2125: &Reply($client,\$reply,$userinput);
2126: return 1;
2127: }
2128: ®ister_handler("serverdistarch", \&server_distarch_handler, 0, 1, 0);
2129:
1.523 raeburn 2130: sub server_certs_handler {
2131: my ($cmd,$tail,$client) = @_;
2132: my $userinput = "$cmd:$tail";
1.548 raeburn 2133: my $hostname = &Apache::lonnet::hostname($perlvar{'lonHostID'});
2134: my $result = &LONCAPA::Lond::server_certs(\%perlvar,$perlvar{'lonHostID'},$hostname);
1.523 raeburn 2135: &Reply($client,\$result,$userinput);
2136: return;
2137: }
2138: ®ister_handler("servercerts", \&server_certs_handler, 0, 1, 0);
2139:
1.218 foxr 2140: # Process a reinit request. Reinit requests that either
2141: # lonc or lond be reinitialized so that an updated
2142: # host.tab or domain.tab can be processed.
2143: #
2144: # Parameters:
2145: # $cmd - the actual keyword that invoked us.
2146: # $tail - the tail of the request that invoked us.
2147: # $client - File descriptor connected to the client
2148: # Returns:
2149: # 1 - Ok to continue processing.
2150: # 0 - Program should exit
2151: # Implicit output:
2152: # a reply is sent to the client.
2153: #
2154: sub reinit_process_handler {
2155: my ($cmd, $tail, $client) = @_;
2156:
2157: my $userinput = "$cmd:$tail";
2158:
2159: my $cert = &GetCertificate($userinput);
2160: if(&ValidManager($cert)) {
2161: chomp($userinput);
2162: my $reply = &ReinitProcess($userinput);
1.387 albertel 2163: &Reply( $client, \$reply, $userinput);
1.218 foxr 2164: } else {
2165: &Failure( $client, "refused\n", $userinput);
2166: }
2167: return 1;
2168: }
2169: ®ister_handler("reinit", \&reinit_process_handler, 1, 0, 1);
2170:
2171: # Process the editing script for a table edit operation.
2172: # the editing operation must be encrypted and requested by
2173: # a manager host.
2174: #
2175: # Parameters:
2176: # $cmd - the actual keyword that invoked us.
2177: # $tail - the tail of the request that invoked us.
2178: # $client - File descriptor connected to the client
2179: # Returns:
2180: # 1 - Ok to continue processing.
2181: # 0 - Program should exit
2182: # Implicit output:
2183: # a reply is sent to the client.
2184: #
2185: sub edit_table_handler {
2186: my ($command, $tail, $client) = @_;
2187:
2188: my $userinput = "$command:$tail";
2189:
2190: my $cert = &GetCertificate($userinput);
2191: if(&ValidManager($cert)) {
2192: my($filetype, $script) = split(/:/, $tail);
2193: if (($filetype eq "hosts") ||
2194: ($filetype eq "domain")) {
2195: if($script ne "") {
2196: &Reply($client, # BUGBUG - EditFile
2197: &EditFile($userinput), # could fail.
2198: $userinput);
2199: } else {
2200: &Failure($client,"refused\n",$userinput);
2201: }
2202: } else {
2203: &Failure($client,"refused\n",$userinput);
2204: }
2205: } else {
2206: &Failure($client,"refused\n",$userinput);
2207: }
2208: return 1;
2209: }
1.263 albertel 2210: ®ister_handler("edit", \&edit_table_handler, 1, 0, 1);
1.218 foxr 2211:
1.220 foxr 2212: #
2213: # Authenticate a user against the LonCAPA authentication
2214: # database. Note that there are several authentication
2215: # possibilities:
2216: # - unix - The user can be authenticated against the unix
2217: # password file.
2218: # - internal - The user can be authenticated against a purely
2219: # internal per user password file.
2220: # - kerberos - The user can be authenticated against either a kerb4 or kerb5
2221: # ticket granting authority.
2222: # - user - The person tailoring LonCAPA can supply a user authentication
2223: # mechanism that is per system.
2224: #
2225: # Parameters:
2226: # $cmd - The command that got us here.
2227: # $tail - Tail of the command (remaining parameters).
2228: # $client - File descriptor connected to client.
2229: # Returns
2230: # 0 - Requested to exit, caller should shut down.
2231: # 1 - Continue processing.
2232: # Implicit inputs:
2233: # The authentication systems describe above have their own forms of implicit
2234: # input into the authentication process that are described above.
2235: #
2236: sub authenticate_handler {
2237: my ($cmd, $tail, $client) = @_;
2238:
2239:
2240: # Regenerate the full input line
2241:
2242: my $userinput = $cmd.":".$tail;
2243:
2244: # udom - User's domain.
2245: # uname - Username.
2246: # upass - User's password.
1.396 raeburn 2247: # checkdefauth - Pass to validate_user() to try authentication
2248: # with default auth type(s) if no user account.
1.447 raeburn 2249: # clientcancheckhost - Passed by clients with functionality in lonauth.pm
2250: # to check if session can be hosted.
1.220 foxr 2251:
1.447 raeburn 2252: my ($udom, $uname, $upass, $checkdefauth, $clientcancheckhost)=split(/:/,$tail);
1.399 raeburn 2253: &Debug(" Authenticate domain = $udom, user = $uname, password = $upass, checkdefauth = $checkdefauth");
1.220 foxr 2254: chomp($upass);
2255: $upass=&unescape($upass);
2256:
1.396 raeburn 2257: my $pwdcorrect = &validate_user($udom,$uname,$upass,$checkdefauth);
1.220 foxr 2258: if($pwdcorrect) {
1.447 raeburn 2259: my $canhost = 1;
2260: unless ($clientcancheckhost) {
1.448 raeburn 2261: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
2262: my $uint_dom = &Apache::lonnet::internet_dom($uprimary_id);
1.452 raeburn 2263: my @intdoms;
2264: my $internet_names = &Apache::lonnet::get_internet_names($clientname);
2265: if (ref($internet_names) eq 'ARRAY') {
2266: @intdoms = @{$internet_names};
2267: }
1.448 raeburn 2268: unless ($uint_dom ne '' && grep(/^\Q$uint_dom\E$/,@intdoms)) {
1.447 raeburn 2269: my ($remote,$hosted);
2270: my $remotesession = &get_usersession_config($udom,'remotesession');
2271: if (ref($remotesession) eq 'HASH') {
1.525 raeburn 2272: $remote = $remotesession->{'remote'};
1.447 raeburn 2273: }
1.448 raeburn 2274: my $hostedsession = &get_usersession_config($clienthomedom,'hostedsession');
1.447 raeburn 2275: if (ref($hostedsession) eq 'HASH') {
2276: $hosted = $hostedsession->{'hosted'};
2277: }
1.448 raeburn 2278: $canhost = &Apache::lonnet::can_host_session($udom,$clientname,
1.492 droeschl 2279: $clientversion,
1.447 raeburn 2280: $remote,$hosted);
2281: }
2282: }
2283: if ($canhost) {
2284: &Reply( $client, "authorized\n", $userinput);
2285: } else {
2286: &Reply( $client, "not_allowed_to_host\n", $userinput);
2287: }
1.220 foxr 2288: #
2289: # Bad credentials: Failed to authorize
2290: #
2291: } else {
2292: &Failure( $client, "non_authorized\n", $userinput);
2293: }
2294:
2295: return 1;
2296: }
1.263 albertel 2297: ®ister_handler("auth", \&authenticate_handler, 1, 1, 0);
1.214 foxr 2298:
1.222 foxr 2299: #
2300: # Change a user's password. Note that this function is complicated by
2301: # the fact that a user may be authenticated in more than one way:
2302: # At present, we are not able to change the password for all types of
2303: # authentication methods. Only for:
2304: # unix - unix password or shadow passoword style authentication.
2305: # local - Locally written authentication mechanism.
2306: # For now, kerb4 and kerb5 password changes are not supported and result
2307: # in an error.
2308: # FUTURE WORK:
2309: # Support kerberos passwd changes?
2310: # Parameters:
2311: # $cmd - The command that got us here.
2312: # $tail - Tail of the command (remaining parameters).
2313: # $client - File descriptor connected to client.
2314: # Returns
2315: # 0 - Requested to exit, caller should shut down.
2316: # 1 - Continue processing.
2317: # Implicit inputs:
2318: # The authentication systems describe above have their own forms of implicit
2319: # input into the authentication process that are described above.
2320: sub change_password_handler {
2321: my ($cmd, $tail, $client) = @_;
2322:
2323: my $userinput = $cmd.":".$tail; # Reconstruct client's string.
2324:
2325: #
2326: # udom - user's domain.
2327: # uname - Username.
2328: # upass - Current password.
2329: # npass - New password.
1.346 raeburn 2330: # context - Context in which this was called
2331: # (preferences or reset_by_email).
1.428 raeburn 2332: # lonhost - HostID of server where request originated
1.222 foxr 2333:
1.428 raeburn 2334: my ($udom,$uname,$upass,$npass,$context,$lonhost)=split(/:/,$tail);
1.222 foxr 2335:
2336: $upass=&unescape($upass);
2337: $npass=&unescape($npass);
2338: &Debug("Trying to change password for $uname");
2339:
2340: # First require that the user can be authenticated with their
1.346 raeburn 2341: # old password unless context was 'reset_by_email':
2342:
1.428 raeburn 2343: my ($validated,$failure);
1.346 raeburn 2344: if ($context eq 'reset_by_email') {
1.428 raeburn 2345: if ($lonhost eq '') {
2346: $failure = 'invalid_client';
2347: } else {
2348: $validated = 1;
2349: }
1.346 raeburn 2350: } else {
2351: $validated = &validate_user($udom, $uname, $upass);
2352: }
1.222 foxr 2353: if($validated) {
2354: my $realpasswd = &get_auth_type($udom, $uname); # Defined since authd.
2355: my ($howpwd,$contentpwd)=split(/:/,$realpasswd);
1.558 raeburn 2356: my $notunique;
1.222 foxr 2357: if ($howpwd eq 'internal') {
2358: &Debug("internal auth");
1.518 raeburn 2359: my $ncpass = &hash_passwd($udom,$npass);
1.558 raeburn 2360: my (undef,$method,@rest) = split(/!/,$contentpwd);
2361: if ($method eq 'bcrypt') {
2362: my %passwdconf = &Apache::lonnet::get_passwdconf($udom);
2363: if (($passwdconf{'numsaved'}) && ($passwdconf{'numsaved'} =~ /^\d+$/)) {
2364: my @oldpasswds;
2365: my $userpath = &propath($udom,$uname);
2366: my $fullpath = $userpath.'/oldpasswds';
2367: if (-d $userpath) {
2368: my @oldfiles;
2369: if (-e $fullpath) {
2370: if (opendir(my $dir,$fullpath)) {
2371: (@oldfiles) = grep(/^\d+$/,readdir($dir));
2372: closedir($dir);
2373: }
2374: if (@oldfiles) {
2375: @oldfiles = sort { $b <=> $a } (@oldfiles);
2376: my $numremoved = 0;
2377: for (my $i=0; $i<@oldfiles; $i++) {
2378: if ($i>=$passwdconf{'numsaved'}) {
2379: if (-f "$fullpath/$oldfiles[$i]") {
2380: if (unlink("$fullpath/$oldfiles[$i]")) {
2381: $numremoved ++;
2382: }
2383: }
2384: } elsif (open(my $fh,'<',"$fullpath/$oldfiles[$i]")) {
2385: while (my $line = <$fh>) {
2386: push(@oldpasswds,$line);
2387: }
2388: close($fh);
2389: }
2390: }
2391: if ($numremoved) {
2392: &logthis("unlinked $numremoved old password files for $uname:$udom");
2393: }
2394: }
2395: }
2396: push(@oldpasswds,$contentpwd);
2397: foreach my $item (@oldpasswds) {
2398: my (undef,$method,@rest) = split(/!/,$item);
2399: if ($method eq 'bcrypt') {
2400: my $result = &hash_passwd($udom,$npass,@rest);
2401: if ($result eq $item) {
2402: $notunique = 1;
2403: last;
2404: }
2405: }
2406: }
2407: unless ($notunique) {
2408: unless (-e $fullpath) {
2409: if (&mkpath("$fullpath/")) {
2410: chmod(0700,$fullpath);
2411: }
2412: }
2413: if (-d $fullpath) {
2414: my $now = time;
2415: if (open(my $fh,'>',"$fullpath/$now")) {
2416: print $fh $contentpwd;
2417: close($fh);
2418: chmod(0400,"$fullpath/$now");
2419: }
2420: }
2421: }
2422: }
2423: }
2424: }
2425: if ($notunique) {
2426: my $msg="Result of password change for $uname:$udom - password matches one used before";
2427: if ($lonhost) {
2428: $msg .= " - request originated from: $lonhost";
2429: }
2430: &logthis($msg);
2431: &Reply($client, "prioruse\n", $userinput);
2432: } elsif (&rewrite_password_file($udom, $uname, "internal:$ncpass")) {
1.428 raeburn 2433: my $msg="Result of password change for $uname: pwchange_success";
2434: if ($lonhost) {
2435: $msg .= " - request originated from: $lonhost";
2436: }
2437: &logthis($msg);
1.518 raeburn 2438: &update_passwd_history($uname,$udom,$howpwd,$context);
1.222 foxr 2439: &Reply($client, "ok\n", $userinput);
2440: } else {
2441: &logthis("Unable to open $uname passwd "
2442: ."to change password");
2443: &Failure( $client, "non_authorized\n",$userinput);
2444: }
1.346 raeburn 2445: } elsif ($howpwd eq 'unix' && $context ne 'reset_by_email') {
1.287 foxr 2446: my $result = &change_unix_password($uname, $npass);
1.518 raeburn 2447: if ($result eq 'ok') {
2448: &update_passwd_history($uname,$udom,$howpwd,$context);
1.561 raeburn 2449: }
1.222 foxr 2450: &logthis("Result of password change for $uname: ".
1.287 foxr 2451: $result);
1.387 albertel 2452: &Reply($client, \$result, $userinput);
1.222 foxr 2453: } else {
2454: # this just means that the current password mode is not
2455: # one we know how to change (e.g the kerberos auth modes or
2456: # locally written auth handler).
2457: #
2458: &Failure( $client, "auth_mode_error\n", $userinput);
2459: }
1.224 foxr 2460: } else {
1.428 raeburn 2461: if ($failure eq '') {
2462: $failure = 'non_authorized';
2463: }
2464: &Failure( $client, "$failure\n", $userinput);
1.222 foxr 2465: }
2466:
2467: return 1;
2468: }
1.263 albertel 2469: ®ister_handler("passwd", \&change_password_handler, 1, 1, 0);
1.222 foxr 2470:
1.518 raeburn 2471: sub hash_passwd {
2472: my ($domain,$plainpass,@rest) = @_;
2473: my ($salt,$cost);
2474: if (@rest) {
2475: $cost = $rest[0];
2476: # salt is first 22 characters, base-64 encoded by bcrypt
2477: my $plainsalt = substr($rest[1],0,22);
2478: $salt = Crypt::Eksblowfish::Bcrypt::de_base64($plainsalt);
2479: } else {
1.533 raeburn 2480: my %domdefaults = &Apache::lonnet::get_domain_defaults($domain);
2481: my $defaultcost = $domdefaults{'intauth_cost'};
1.518 raeburn 2482: if (($defaultcost eq '') || ($defaultcost =~ /D/)) {
2483: $cost = 10;
2484: } else {
2485: $cost = $defaultcost;
2486: }
2487: # Generate random 16-octet base64 salt
2488: $salt = "";
2489: $salt .= pack("C", int rand(256)) for 1..16;
2490: }
2491: my $hash = &Crypt::Eksblowfish::Bcrypt::bcrypt_hash({
2492: key_nul => 1,
2493: cost => $cost,
2494: salt => $salt,
2495: }, Digest::SHA::sha512(Encode::encode('UTF-8',$plainpass)));
2496:
2497: my $result = join("!", "", "bcrypt", sprintf("%02d",$cost),
2498: &Crypt::Eksblowfish::Bcrypt::en_base64($salt).
2499: &Crypt::Eksblowfish::Bcrypt::en_base64($hash));
2500: return $result;
2501: }
2502:
1.225 foxr 2503: #
2504: # Create a new user. User in this case means a lon-capa user.
2505: # The user must either already exist in some authentication realm
2506: # like kerberos or the /etc/passwd. If not, a user completely local to
2507: # this loncapa system is created.
2508: #
2509: # Parameters:
2510: # $cmd - The command that got us here.
2511: # $tail - Tail of the command (remaining parameters).
2512: # $client - File descriptor connected to client.
2513: # Returns
2514: # 0 - Requested to exit, caller should shut down.
2515: # 1 - Continue processing.
2516: # Implicit inputs:
2517: # The authentication systems describe above have their own forms of implicit
2518: # input into the authentication process that are described above.
2519: sub add_user_handler {
2520:
2521: my ($cmd, $tail, $client) = @_;
2522:
2523:
2524: my ($udom,$uname,$umode,$npass)=split(/:/,$tail);
2525: my $userinput = $cmd.":".$tail; # Reconstruct the full request line.
2526:
2527: &Debug("cmd =".$cmd." $udom =".$udom." uname=".$uname);
2528:
2529:
2530: if($udom eq $currentdomainid) { # Reject new users for other domains...
2531:
2532: my $oldumask=umask(0077);
2533: chomp($npass);
2534: $npass=&unescape($npass);
2535: my $passfilename = &password_path($udom, $uname);
2536: &Debug("Password file created will be:".$passfilename);
2537: if (-e $passfilename) {
2538: &Failure( $client, "already_exists\n", $userinput);
2539: } else {
2540: my $fperror='';
1.264 albertel 2541: if (!&mkpath($passfilename)) {
2542: $fperror="error: ".($!+0)." mkdir failed while attempting "
2543: ."makeuser";
1.225 foxr 2544: }
2545: unless ($fperror) {
1.518 raeburn 2546: my $result=&make_passwd_file($uname,$udom,$umode,$npass,
2547: $passfilename,'makeuser');
1.390 raeburn 2548: &Reply($client,\$result, $userinput); #BUGBUG - could be fail
1.225 foxr 2549: } else {
1.387 albertel 2550: &Failure($client, \$fperror, $userinput);
1.225 foxr 2551: }
2552: }
2553: umask($oldumask);
2554: } else {
2555: &Failure($client, "not_right_domain\n",
2556: $userinput); # Even if we are multihomed.
2557:
2558: }
2559: return 1;
2560:
2561: }
2562: ®ister_handler("makeuser", \&add_user_handler, 1, 1, 0);
2563:
2564: #
2565: # Change the authentication method of a user. Note that this may
2566: # also implicitly change the user's password if, for example, the user is
2567: # joining an existing authentication realm. Known authentication realms at
2568: # this time are:
2569: # internal - Purely internal password file (only loncapa knows this user)
2570: # local - Institutionally written authentication module.
2571: # unix - Unix user (/etc/passwd with or without /etc/shadow).
2572: # kerb4 - kerberos version 4
2573: # kerb5 - kerberos version 5
2574: #
2575: # Parameters:
2576: # $cmd - The command that got us here.
2577: # $tail - Tail of the command (remaining parameters).
2578: # $client - File descriptor connected to client.
2579: # Returns
2580: # 0 - Requested to exit, caller should shut down.
2581: # 1 - Continue processing.
2582: # Implicit inputs:
2583: # The authentication systems describe above have their own forms of implicit
2584: # input into the authentication process that are described above.
1.287 foxr 2585: # NOTE:
2586: # This is also used to change the authentication credential values (e.g. passwd).
2587: #
1.225 foxr 2588: #
2589: sub change_authentication_handler {
2590:
2591: my ($cmd, $tail, $client) = @_;
2592:
2593: my $userinput = "$cmd:$tail"; # Reconstruct user input.
2594:
2595: my ($udom,$uname,$umode,$npass)=split(/:/,$tail);
2596: &Debug("cmd = ".$cmd." domain= ".$udom."uname =".$uname." umode= ".$umode);
2597: if ($udom ne $currentdomainid) {
2598: &Failure( $client, "not_right_domain\n", $client);
2599: } else {
2600:
2601: chomp($npass);
2602:
2603: $npass=&unescape($npass);
1.261 foxr 2604: my $oldauth = &get_auth_type($udom, $uname); # Get old auth info.
1.225 foxr 2605: my $passfilename = &password_path($udom, $uname);
2606: if ($passfilename) { # Not allowed to create a new user!!
1.287 foxr 2607: # If just changing the unix passwd. need to arrange to run
1.502 raeburn 2608: # passwd since otherwise make_passwd_file will fail as
2609: # creation of unix authenticated users is no longer supported
2610: # except from the command line, when running make_domain_coordinator.pl
1.287 foxr 2611:
2612: if(($oldauth =~/^unix/) && ($umode eq "unix")) {
2613: my $result = &change_unix_password($uname, $npass);
2614: &logthis("Result of password change for $uname: ".$result);
2615: if ($result eq "ok") {
1.518 raeburn 2616: &update_passwd_history($uname,$udom,$umode,'changeuserauth');
1.390 raeburn 2617: &Reply($client, \$result);
1.288 albertel 2618: } else {
1.387 albertel 2619: &Failure($client, \$result);
1.287 foxr 2620: }
1.288 albertel 2621: } else {
1.518 raeburn 2622: my $result=&make_passwd_file($uname,$udom,$umode,$npass,
2623: $passfilename,'changeuserauth');
1.287 foxr 2624: #
2625: # If the current auth mode is internal, and the old auth mode was
2626: # unix, or krb*, and the user is an author for this domain,
2627: # re-run manage_permissions for that role in order to be able
2628: # to take ownership of the construction space back to www:www
2629: #
1.502 raeburn 2630:
2631:
1.387 albertel 2632: &Reply($client, \$result, $userinput);
1.261 foxr 2633: }
2634:
2635:
1.225 foxr 2636: } else {
1.251 foxr 2637: &Failure($client, "non_authorized\n", $userinput); # Fail the user now.
1.225 foxr 2638: }
2639: }
2640: return 1;
2641: }
2642: ®ister_handler("changeuserauth", \&change_authentication_handler, 1,1, 0);
2643:
1.518 raeburn 2644: sub update_passwd_history {
2645: my ($uname,$udom,$umode,$context) = @_;
2646: my $proname=&propath($udom,$uname);
2647: my $now = time;
2648: if (open(my $fh,">>$proname/passwd.log")) {
2649: print $fh "$now:$umode:$context\n";
2650: close($fh);
2651: }
2652: return;
2653: }
2654:
1.225 foxr 2655: #
2656: # Determines if this is the home server for a user. The home server
2657: # for a user will have his/her lon-capa passwd file. Therefore all we need
2658: # to do is determine if this file exists.
2659: #
2660: # Parameters:
2661: # $cmd - The command that got us here.
2662: # $tail - Tail of the command (remaining parameters).
2663: # $client - File descriptor connected to client.
2664: # Returns
2665: # 0 - Requested to exit, caller should shut down.
2666: # 1 - Continue processing.
2667: # Implicit inputs:
2668: # The authentication systems describe above have their own forms of implicit
2669: # input into the authentication process that are described above.
2670: #
2671: sub is_home_handler {
2672: my ($cmd, $tail, $client) = @_;
2673:
2674: my $userinput = "$cmd:$tail";
2675:
2676: my ($udom,$uname)=split(/:/,$tail);
2677: chomp($uname);
2678: my $passfile = &password_filename($udom, $uname);
2679: if($passfile) {
2680: &Reply( $client, "found\n", $userinput);
2681: } else {
2682: &Failure($client, "not_found\n", $userinput);
2683: }
2684: return 1;
2685: }
2686: ®ister_handler("home", \&is_home_handler, 0,1,0);
2687:
2688: #
1.434 www 2689: # Process an update request for a resource.
2690: # A resource has been modified that we hold a subscription to.
1.225 foxr 2691: # If the resource is not local, then we must update, or at least invalidate our
2692: # cached copy of the resource.
2693: # Parameters:
2694: # $cmd - The command that got us here.
2695: # $tail - Tail of the command (remaining parameters).
2696: # $client - File descriptor connected to client.
2697: # Returns
2698: # 0 - Requested to exit, caller should shut down.
2699: # 1 - Continue processing.
2700: # Implicit inputs:
2701: # The authentication systems describe above have their own forms of implicit
2702: # input into the authentication process that are described above.
2703: #
2704: sub update_resource_handler {
2705:
2706: my ($cmd, $tail, $client) = @_;
2707:
2708: my $userinput = "$cmd:$tail";
2709:
2710: my $fname= $tail; # This allows interactive testing
2711:
2712:
2713: my $ownership=ishome($fname);
2714: if ($ownership eq 'not_owner') {
2715: if (-e $fname) {
1.434 www 2716: # Delete preview file, if exists
2717: unlink("$fname.tmp");
2718: # Get usage stats
1.225 foxr 2719: my ($dev,$ino,$mode,$nlink,$uid,$gid,$rdev,$size,
2720: $atime,$mtime,$ctime,$blksize,$blocks)=stat($fname);
2721: my $now=time;
2722: my $since=$now-$atime;
1.434 www 2723: # If the file has not been used within lonExpire seconds,
2724: # unsubscribe from it and delete local copy
1.225 foxr 2725: if ($since>$perlvar{'lonExpire'}) {
1.365 albertel 2726: my $reply=&Apache::lonnet::reply("unsub:$fname","$clientname");
1.308 albertel 2727: &devalidate_meta_cache($fname);
1.225 foxr 2728: unlink("$fname");
1.334 albertel 2729: unlink("$fname.meta");
1.225 foxr 2730: } else {
1.434 www 2731: # Yes, this is in active use. Get a fresh copy. Since it might be in
2732: # very active use and huge (like a movie), copy it to "in.transfer" filename first.
1.225 foxr 2733: my $transname="$fname.in.transfer";
1.365 albertel 2734: my $remoteurl=&Apache::lonnet::reply("sub:$fname","$clientname");
1.225 foxr 2735: my $response;
1.537 raeburn 2736: # FIXME: cannot replicate files that take more than two minutes to transfer -- needs checking now 1200s timeout used
2737: # for LWP request.
2738: my $request=new HTTP::Request('GET',"$remoteurl");
2739: $response=&LONCAPA::LWPReq::makerequest($clientname,$request,$transname,\%perlvar,1200,0,1);
1.225 foxr 2740: if ($response->is_error()) {
1.541 raeburn 2741: my $reply=&Apache::lonnet::reply("unsub:$fname","$clientname");
2742: &devalidate_meta_cache($fname);
2743: if (-e $transname) {
2744: unlink($transname);
2745: }
2746: unlink($fname);
1.225 foxr 2747: my $message=$response->status_line;
2748: &logthis("LWP GET: $message for $fname ($remoteurl)");
2749: } else {
2750: if ($remoteurl!~/\.meta$/) {
1.537 raeburn 2751: my $mrequest=new HTTP::Request('GET',$remoteurl.'.meta');
2752: my $mresponse = &LONCAPA::LWPReq::makerequest($clientname,$mrequest,$fname.'.meta',\%perlvar,120,0,1);
2753: if ($mresponse->is_error()) {
2754: unlink($fname.'.meta');
1.225 foxr 2755: }
2756: }
1.434 www 2757: # we successfully transfered, copy file over to real name
1.225 foxr 2758: rename($transname,$fname);
1.308 albertel 2759: &devalidate_meta_cache($fname);
1.225 foxr 2760: }
2761: }
2762: &Reply( $client, "ok\n", $userinput);
2763: } else {
2764: &Failure($client, "not_found\n", $userinput);
2765: }
2766: } else {
2767: &Failure($client, "rejected\n", $userinput);
2768: }
2769: return 1;
2770: }
2771: ®ister_handler("update", \&update_resource_handler, 0 ,1, 0);
2772:
1.308 albertel 2773: sub devalidate_meta_cache {
2774: my ($url) = @_;
2775: use Cache::Memcached;
2776: my $memcache = new Cache::Memcached({'servers'=>['127.0.0.1:11211']});
1.365 albertel 2777: $url = &Apache::lonnet::declutter($url);
1.308 albertel 2778: $url =~ s-\.meta$--;
2779: my $id = &escape('meta:'.$url);
2780: $memcache->delete($id);
2781: }
2782:
1.225 foxr 2783: #
1.226 foxr 2784: # Fetch a user file from a remote server to the user's home directory
2785: # userfiles subdir.
1.225 foxr 2786: # Parameters:
2787: # $cmd - The command that got us here.
2788: # $tail - Tail of the command (remaining parameters).
2789: # $client - File descriptor connected to client.
2790: # Returns
2791: # 0 - Requested to exit, caller should shut down.
2792: # 1 - Continue processing.
2793: #
2794: sub fetch_user_file_handler {
2795:
2796: my ($cmd, $tail, $client) = @_;
2797:
2798: my $userinput = "$cmd:$tail";
2799: my $fname = $tail;
1.232 foxr 2800: my ($udom,$uname,$ufile) = ($fname =~ m|^([^/]+)/([^/]+)/(.+)$|);
1.225 foxr 2801: my $udir=&propath($udom,$uname).'/userfiles';
2802: unless (-e $udir) {
2803: mkdir($udir,0770);
2804: }
1.232 foxr 2805: Debug("fetch user file for $fname");
1.225 foxr 2806: if (-e $udir) {
2807: $ufile=~s/^[\.\~]+//;
1.232 foxr 2808:
2809: # IF necessary, create the path right down to the file.
2810: # Note that any regular files in the way of this path are
2811: # wiped out to deal with some earlier folly of mine.
2812:
1.267 raeburn 2813: if (!&mkpath($udir.'/'.$ufile)) {
1.264 albertel 2814: &Failure($client, "unable_to_create\n", $userinput);
1.232 foxr 2815: }
2816:
1.225 foxr 2817: my $destname=$udir.'/'.$ufile;
2818: my $transname=$udir.'/'.$ufile.'.in.transit';
1.476 raeburn 2819: my $clientprotocol=$Apache::lonnet::protocol{$clientname};
2820: $clientprotocol = 'http' if ($clientprotocol ne 'https');
1.486 raeburn 2821: my $clienthost = &Apache::lonnet::hostname($clientname);
2822: my $remoteurl=$clientprotocol.'://'.$clienthost.'/userfiles/'.$fname;
1.225 foxr 2823: my $response;
1.232 foxr 2824: Debug("Remote URL : $remoteurl Transfername $transname Destname: $destname");
1.537 raeburn 2825: my $request=new HTTP::Request('GET',"$remoteurl");
2826: my $verifycert = 1;
2827: my @machine_ids = &Apache::lonnet::current_machine_ids();
2828: if (grep(/^\Q$clientname\E$/,@machine_ids)) {
2829: $verifycert = 0;
2830: }
2831: $response = &LONCAPA::LWPReq::makerequest($clientname,$request,$transname,\%perlvar,1200,$verifycert);
1.225 foxr 2832: if ($response->is_error()) {
2833: unlink($transname);
2834: my $message=$response->status_line;
2835: &logthis("LWP GET: $message for $fname ($remoteurl)");
2836: &Failure($client, "failed\n", $userinput);
2837: } else {
1.232 foxr 2838: Debug("Renaming $transname to $destname");
1.225 foxr 2839: if (!rename($transname,$destname)) {
2840: &logthis("Unable to move $transname to $destname");
2841: unlink($transname);
2842: &Failure($client, "failed\n", $userinput);
2843: } else {
1.495 raeburn 2844: if ($fname =~ /^default.+\.(page|sequence)$/) {
2845: my ($major,$minor) = split(/\./,$clientversion);
2846: if (($major < 2) || ($major == 2 && $minor < 11)) {
2847: my $now = time;
2848: &Apache::lonnet::do_cache_new('crschange',$udom.'_'.$uname,$now,600);
2849: my $key = &escape('internal.contentchange');
2850: my $what = "$key=$now";
2851: my $hashref = &tie_user_hash($udom,$uname,'environment',
2852: &GDBM_WRCREAT(),"P",$what);
2853: if ($hashref) {
2854: $hashref->{$key}=$now;
2855: if (!&untie_user_hash($hashref)) {
2856: &logthis("error: ".($!+0)." untie (GDBM) failed ".
2857: "when updating internal.contentchange");
2858: }
2859: }
2860: }
2861: }
1.225 foxr 2862: &Reply($client, "ok\n", $userinput);
2863: }
2864: }
2865: } else {
2866: &Failure($client, "not_home\n", $userinput);
2867: }
2868: return 1;
2869: }
2870: ®ister_handler("fetchuserfile", \&fetch_user_file_handler, 0, 1, 0);
2871:
1.226 foxr 2872: #
2873: # Remove a file from a user's home directory userfiles subdirectory.
2874: # Parameters:
2875: # cmd - the Lond request keyword that got us here.
2876: # tail - the part of the command past the keyword.
2877: # client- File descriptor connected with the client.
2878: #
2879: # Returns:
2880: # 1 - Continue processing.
2881: sub remove_user_file_handler {
2882: my ($cmd, $tail, $client) = @_;
2883:
2884: my ($fname) = split(/:/, $tail); # Get rid of any tailing :'s lonc may have sent.
2885:
2886: my ($udom,$uname,$ufile) = ($fname =~ m|^([^/]+)/([^/]+)/(.+)$|);
2887: if ($ufile =~m|/\.\./|) {
2888: # any files paths with /../ in them refuse
2889: # to deal with
2890: &Failure($client, "refused\n", "$cmd:$tail");
2891: } else {
2892: my $udir = &propath($udom,$uname);
2893: if (-e $udir) {
2894: my $file=$udir.'/userfiles/'.$ufile;
2895: if (-e $file) {
1.253 foxr 2896: #
2897: # If the file is a regular file unlink is fine...
1.520 raeburn 2898: # However it's possible the client wants a dir
2899: # removed, in which case rmdir is more appropriate.
2900: # Note: rmdir will only remove an empty directory.
1.253 foxr 2901: #
1.240 banghart 2902: if (-f $file){
1.241 albertel 2903: unlink($file);
1.520 raeburn 2904: # for html files remove the associated .bak file
2905: # which may have been created by the editor.
2906: if ($ufile =~ m{^((docs|supplemental)/(?:\d+|default)/\d+(?:|/.+)/)[^/]+\.x?html?$}i) {
2907: my $path = $1;
2908: if (-e $file.'.bak') {
2909: unlink($file.'.bak');
2910: }
2911: }
1.241 albertel 2912: } elsif(-d $file) {
2913: rmdir($file);
1.240 banghart 2914: }
1.226 foxr 2915: if (-e $file) {
1.253 foxr 2916: # File is still there after we deleted it ?!?
2917:
1.226 foxr 2918: &Failure($client, "failed\n", "$cmd:$tail");
2919: } else {
2920: &Reply($client, "ok\n", "$cmd:$tail");
2921: }
2922: } else {
2923: &Failure($client, "not_found\n", "$cmd:$tail");
2924: }
2925: } else {
2926: &Failure($client, "not_home\n", "$cmd:$tail");
2927: }
2928: }
2929: return 1;
2930: }
2931: ®ister_handler("removeuserfile", \&remove_user_file_handler, 0,1,0);
2932:
1.236 albertel 2933: #
2934: # make a directory in a user's home directory userfiles subdirectory.
2935: # Parameters:
2936: # cmd - the Lond request keyword that got us here.
2937: # tail - the part of the command past the keyword.
2938: # client- File descriptor connected with the client.
2939: #
2940: # Returns:
2941: # 1 - Continue processing.
2942: sub mkdir_user_file_handler {
2943: my ($cmd, $tail, $client) = @_;
2944:
2945: my ($dir) = split(/:/, $tail); # Get rid of any tailing :'s lonc may have sent.
2946: $dir=&unescape($dir);
2947: my ($udom,$uname,$ufile) = ($dir =~ m|^([^/]+)/([^/]+)/(.+)$|);
2948: if ($ufile =~m|/\.\./|) {
2949: # any files paths with /../ in them refuse
2950: # to deal with
2951: &Failure($client, "refused\n", "$cmd:$tail");
2952: } else {
2953: my $udir = &propath($udom,$uname);
2954: if (-e $udir) {
1.264 albertel 2955: my $newdir=$udir.'/userfiles/'.$ufile.'/';
2956: if (!&mkpath($newdir)) {
2957: &Failure($client, "failed\n", "$cmd:$tail");
1.236 albertel 2958: }
1.264 albertel 2959: &Reply($client, "ok\n", "$cmd:$tail");
1.236 albertel 2960: } else {
2961: &Failure($client, "not_home\n", "$cmd:$tail");
2962: }
2963: }
2964: return 1;
2965: }
2966: ®ister_handler("mkdiruserfile", \&mkdir_user_file_handler, 0,1,0);
2967:
1.237 albertel 2968: #
2969: # rename a file in a user's home directory userfiles subdirectory.
2970: # Parameters:
2971: # cmd - the Lond request keyword that got us here.
2972: # tail - the part of the command past the keyword.
2973: # client- File descriptor connected with the client.
2974: #
2975: # Returns:
2976: # 1 - Continue processing.
2977: sub rename_user_file_handler {
2978: my ($cmd, $tail, $client) = @_;
2979:
2980: my ($udom,$uname,$old,$new) = split(/:/, $tail);
2981: $old=&unescape($old);
2982: $new=&unescape($new);
2983: if ($new =~m|/\.\./| || $old =~m|/\.\./|) {
2984: # any files paths with /../ in them refuse to deal with
2985: &Failure($client, "refused\n", "$cmd:$tail");
2986: } else {
2987: my $udir = &propath($udom,$uname);
2988: if (-e $udir) {
2989: my $oldfile=$udir.'/userfiles/'.$old;
2990: my $newfile=$udir.'/userfiles/'.$new;
2991: if (-e $newfile) {
2992: &Failure($client, "exists\n", "$cmd:$tail");
2993: } elsif (! -e $oldfile) {
2994: &Failure($client, "not_found\n", "$cmd:$tail");
2995: } else {
2996: if (!rename($oldfile,$newfile)) {
2997: &Failure($client, "failed\n", "$cmd:$tail");
2998: } else {
2999: &Reply($client, "ok\n", "$cmd:$tail");
3000: }
3001: }
3002: } else {
3003: &Failure($client, "not_home\n", "$cmd:$tail");
3004: }
3005: }
3006: return 1;
3007: }
3008: ®ister_handler("renameuserfile", \&rename_user_file_handler, 0,1,0);
3009:
1.227 foxr 3010: #
1.382 albertel 3011: # Checks if the specified user has an active session on the server
3012: # return ok if so, not_found if not
3013: #
3014: # Parameters:
3015: # cmd - The request keyword that dispatched to tus.
3016: # tail - The tail of the request (colon separated parameters).
3017: # client - Filehandle open on the client.
3018: # Return:
3019: # 1.
3020: sub user_has_session_handler {
3021: my ($cmd, $tail, $client) = @_;
3022:
3023: my ($udom, $uname) = map { &unescape($_) } (split(/:/, $tail));
3024:
3025: opendir(DIR,$perlvar{'lonIDsDir'});
3026: my $filename;
3027: while ($filename=readdir(DIR)) {
3028: last if ($filename=~/^\Q$uname\E_\d+_\Q$udom\E_/);
3029: }
3030: if ($filename) {
3031: &Reply($client, "ok\n", "$cmd:$tail");
3032: } else {
3033: &Failure($client, "not_found\n", "$cmd:$tail");
3034: }
3035: return 1;
3036:
3037: }
3038: ®ister_handler("userhassession", \&user_has_session_handler, 0,1,0);
3039:
1.560 raeburn 3040: sub del_usersession_handler {
3041: my ($cmd, $tail, $client) = @_;
3042:
3043: my $result;
3044: my ($udom, $uname) = map { &unescape($_) } (split(/:/, $tail));
3045: if (($udom =~ /^$LONCAPA::match_domain$/) && ($uname =~ /^$LONCAPA::match_username$/)) {
3046: my $lonidsdir = $perlvar{'lonIDsDir'};
3047: if (-d $lonidsdir) {
3048: if (opendir(DIR,$lonidsdir)) {
3049: my $filename;
3050: while ($filename=readdir(DIR)) {
3051: if ($filename=~/^\Q$uname\E_\d+_\Q$udom\E_/) {
3052: if (tie(my %oldenv,'GDBM_File',"$lonidsdir/$filename",
3053: &GDBM_READER(),0640)) {
3054: my $linkedfile;
3055: if (exists($oldenv{'user.linkedenv'})) {
3056: $linkedfile = $oldenv{'user.linkedenv'};
3057: }
3058: untie(%oldenv);
3059: $result = unlink("$lonidsdir/$filename");
3060: if ($result) {
3061: if ($linkedfile =~ /^[a-f0-9]+_linked$/) {
3062: if (-l "$lonidsdir/$linkedfile.id") {
3063: unlink("$lonidsdir/$linkedfile.id");
3064: }
3065: }
3066: }
3067: } else {
3068: $result = unlink("$lonidsdir/$filename");
3069: }
3070: last;
3071: }
3072: }
3073: }
3074: }
3075: if ($result == 1) {
3076: &Reply($client, "$result\n", "$cmd:$tail");
3077: } else {
3078: &Reply($client, "not_found\n", "$cmd:$tail");
3079: }
3080: } else {
3081: &Failure($client, "invalid_user\n", "$cmd:$tail");
3082: }
3083: return 1;
3084: }
3085:
3086: ®ister_handler("delusersession", \&del_usersession_handler, 0,1,0);
3087:
1.382 albertel 3088: #
1.263 albertel 3089: # Authenticate access to a user file by checking that the token the user's
3090: # passed also exists in their session file
1.227 foxr 3091: #
3092: # Parameters:
3093: # cmd - The request keyword that dispatched to tus.
3094: # tail - The tail of the request (colon separated parameters).
3095: # client - Filehandle open on the client.
3096: # Return:
3097: # 1.
3098: sub token_auth_user_file_handler {
3099: my ($cmd, $tail, $client) = @_;
3100:
3101: my ($fname, $session) = split(/:/, $tail);
3102:
3103: chomp($session);
1.393 raeburn 3104: my $reply="non_auth";
1.343 albertel 3105: my $file = $perlvar{'lonIDsDir'}.'/'.$session.'.id';
3106: if (open(ENVIN,"$file")) {
1.332 albertel 3107: flock(ENVIN,LOCK_SH);
1.343 albertel 3108: tie(my %disk_env,'GDBM_File',"$file",&GDBM_READER(),0640);
3109: if (exists($disk_env{"userfile.$fname"})) {
1.393 raeburn 3110: $reply="ok";
1.343 albertel 3111: } else {
3112: foreach my $envname (keys(%disk_env)) {
3113: if ($envname=~ m|^userfile\.\Q$fname\E|) {
1.393 raeburn 3114: $reply="ok";
1.343 albertel 3115: last;
3116: }
3117: }
1.227 foxr 3118: }
1.343 albertel 3119: untie(%disk_env);
1.227 foxr 3120: close(ENVIN);
1.387 albertel 3121: &Reply($client, \$reply, "$cmd:$tail");
1.227 foxr 3122: } else {
3123: &Failure($client, "invalid_token\n", "$cmd:$tail");
3124: }
3125: return 1;
3126:
3127: }
3128: ®ister_handler("tokenauthuserfile", \&token_auth_user_file_handler, 0,1,0);
1.229 foxr 3129:
3130: #
3131: # Unsubscribe from a resource.
3132: #
3133: # Parameters:
3134: # $cmd - The command that got us here.
3135: # $tail - Tail of the command (remaining parameters).
3136: # $client - File descriptor connected to client.
3137: # Returns
3138: # 0 - Requested to exit, caller should shut down.
3139: # 1 - Continue processing.
3140: #
3141: sub unsubscribe_handler {
3142: my ($cmd, $tail, $client) = @_;
3143:
3144: my $userinput= "$cmd:$tail";
3145:
3146: my ($fname) = split(/:/,$tail); # Split in case there's extrs.
3147:
3148: &Debug("Unsubscribing $fname");
3149: if (-e $fname) {
3150: &Debug("Exists");
3151: &Reply($client, &unsub($fname,$clientip), $userinput);
3152: } else {
3153: &Failure($client, "not_found\n", $userinput);
3154: }
3155: return 1;
3156: }
3157: ®ister_handler("unsub", \&unsubscribe_handler, 0, 1, 0);
1.263 albertel 3158:
1.230 foxr 3159: # Subscribe to a resource
3160: #
3161: # Parameters:
3162: # $cmd - The command that got us here.
3163: # $tail - Tail of the command (remaining parameters).
3164: # $client - File descriptor connected to client.
3165: # Returns
3166: # 0 - Requested to exit, caller should shut down.
3167: # 1 - Continue processing.
3168: #
3169: sub subscribe_handler {
3170: my ($cmd, $tail, $client)= @_;
3171:
3172: my $userinput = "$cmd:$tail";
3173:
3174: &Reply( $client, &subscribe($userinput,$clientip), $userinput);
3175:
3176: return 1;
3177: }
3178: ®ister_handler("sub", \&subscribe_handler, 0, 1, 0);
3179:
3180: #
1.379 albertel 3181: # Determine the latest version of a resource (it looks for the highest
3182: # past version and then returns that +1)
1.230 foxr 3183: #
3184: # Parameters:
3185: # $cmd - The command that got us here.
3186: # $tail - Tail of the command (remaining parameters).
1.379 albertel 3187: # (Should consist of an absolute path to a file)
1.230 foxr 3188: # $client - File descriptor connected to client.
3189: # Returns
3190: # 0 - Requested to exit, caller should shut down.
3191: # 1 - Continue processing.
3192: #
3193: sub current_version_handler {
3194: my ($cmd, $tail, $client) = @_;
3195:
3196: my $userinput= "$cmd:$tail";
3197:
3198: my $fname = $tail;
3199: &Reply( $client, ¤tversion($fname)."\n", $userinput);
3200: return 1;
3201:
3202: }
3203: ®ister_handler("currentversion", \¤t_version_handler, 0, 1, 0);
3204:
3205: # Make an entry in a user's activity log.
3206: #
3207: # Parameters:
3208: # $cmd - The command that got us here.
3209: # $tail - Tail of the command (remaining parameters).
3210: # $client - File descriptor connected to client.
3211: # Returns
3212: # 0 - Requested to exit, caller should shut down.
3213: # 1 - Continue processing.
3214: #
3215: sub activity_log_handler {
3216: my ($cmd, $tail, $client) = @_;
3217:
3218:
3219: my $userinput= "$cmd:$tail";
3220:
3221: my ($udom,$uname,$what)=split(/:/,$tail);
3222: chomp($what);
3223: my $proname=&propath($udom,$uname);
3224: my $now=time;
3225: my $hfh;
3226: if ($hfh=IO::File->new(">>$proname/activity.log")) {
3227: print $hfh "$now:$clientname:$what\n";
3228: &Reply( $client, "ok\n", $userinput);
3229: } else {
3230: &Failure($client, "error: ".($!+0)." IO::File->new Failed "
3231: ."while attempting log\n",
3232: $userinput);
3233: }
3234:
3235: return 1;
3236: }
1.263 albertel 3237: ®ister_handler("log", \&activity_log_handler, 0, 1, 0);
1.230 foxr 3238:
3239: #
3240: # Put a namespace entry in a user profile hash.
3241: # My druthers would be for this to be an encrypted interaction too.
3242: # anything that might be an inadvertent covert channel about either
3243: # user authentication or user personal information....
3244: #
3245: # Parameters:
3246: # $cmd - The command that got us here.
3247: # $tail - Tail of the command (remaining parameters).
3248: # $client - File descriptor connected to client.
3249: # Returns
3250: # 0 - Requested to exit, caller should shut down.
3251: # 1 - Continue processing.
3252: #
3253: sub put_user_profile_entry {
3254: my ($cmd, $tail, $client) = @_;
1.229 foxr 3255:
1.230 foxr 3256: my $userinput = "$cmd:$tail";
3257:
1.242 raeburn 3258: my ($udom,$uname,$namespace,$what) =split(/:/,$tail,4);
1.230 foxr 3259: if ($namespace ne 'roles') {
3260: chomp($what);
3261: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3262: &GDBM_WRCREAT(),"P",$what);
3263: if($hashref) {
3264: my @pairs=split(/\&/,$what);
3265: foreach my $pair (@pairs) {
3266: my ($key,$value)=split(/=/,$pair);
3267: $hashref->{$key}=$value;
3268: }
1.311 albertel 3269: if (&untie_user_hash($hashref)) {
1.230 foxr 3270: &Reply( $client, "ok\n", $userinput);
3271: } else {
3272: &Failure($client, "error: ".($!+0)." untie(GDBM) failed ".
3273: "while attempting put\n",
3274: $userinput);
3275: }
3276: } else {
1.316 albertel 3277: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
1.230 foxr 3278: "while attempting put\n", $userinput);
3279: }
3280: } else {
3281: &Failure( $client, "refused\n", $userinput);
3282: }
3283:
3284: return 1;
3285: }
3286: ®ister_handler("put", \&put_user_profile_entry, 0, 1, 0);
3287:
1.283 albertel 3288: # Put a piece of new data in hash, returns error if entry already exists
3289: # Parameters:
3290: # $cmd - The command that got us here.
3291: # $tail - Tail of the command (remaining parameters).
3292: # $client - File descriptor connected to client.
3293: # Returns
3294: # 0 - Requested to exit, caller should shut down.
3295: # 1 - Continue processing.
3296: #
3297: sub newput_user_profile_entry {
3298: my ($cmd, $tail, $client) = @_;
3299:
3300: my $userinput = "$cmd:$tail";
3301:
3302: my ($udom,$uname,$namespace,$what) =split(/:/,$tail,4);
3303: if ($namespace eq 'roles') {
3304: &Failure( $client, "refused\n", $userinput);
3305: return 1;
3306: }
3307:
3308: chomp($what);
3309:
3310: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3311: &GDBM_WRCREAT(),"N",$what);
3312: if(!$hashref) {
1.316 albertel 3313: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
1.283 albertel 3314: "while attempting put\n", $userinput);
3315: return 1;
3316: }
3317:
3318: my @pairs=split(/\&/,$what);
3319: foreach my $pair (@pairs) {
3320: my ($key,$value)=split(/=/,$pair);
3321: if (exists($hashref->{$key})) {
1.513 raeburn 3322: if (!&untie_user_hash($hashref)) {
3323: &logthis("error: ".($!+0)." untie (GDBM) failed ".
3324: "while attempting newput - early out as key exists");
3325: }
3326: &Failure($client, "key_exists: ".$key."\n",$userinput);
3327: return 1;
1.283 albertel 3328: }
3329: }
3330:
3331: foreach my $pair (@pairs) {
3332: my ($key,$value)=split(/=/,$pair);
3333: $hashref->{$key}=$value;
3334: }
3335:
1.311 albertel 3336: if (&untie_user_hash($hashref)) {
1.283 albertel 3337: &Reply( $client, "ok\n", $userinput);
3338: } else {
3339: &Failure($client, "error: ".($!+0)." untie(GDBM) failed ".
3340: "while attempting put\n",
3341: $userinput);
3342: }
3343: return 1;
3344: }
3345: ®ister_handler("newput", \&newput_user_profile_entry, 0, 1, 0);
3346:
1.230 foxr 3347: #
3348: # Increment a profile entry in the user history file.
3349: # The history contains keyword value pairs. In this case,
3350: # The value itself is a pair of numbers. The first, the current value
3351: # the second an increment that this function applies to the current
3352: # value.
3353: #
3354: # Parameters:
3355: # $cmd - The command that got us here.
3356: # $tail - Tail of the command (remaining parameters).
3357: # $client - File descriptor connected to client.
3358: # Returns
3359: # 0 - Requested to exit, caller should shut down.
3360: # 1 - Continue processing.
3361: #
3362: sub increment_user_value_handler {
3363: my ($cmd, $tail, $client) = @_;
3364:
3365: my $userinput = "$cmd:$tail";
3366:
3367: my ($udom,$uname,$namespace,$what) =split(/:/,$tail);
3368: if ($namespace ne 'roles') {
3369: chomp($what);
3370: my $hashref = &tie_user_hash($udom, $uname,
3371: $namespace, &GDBM_WRCREAT(),
3372: "P",$what);
3373: if ($hashref) {
3374: my @pairs=split(/\&/,$what);
3375: foreach my $pair (@pairs) {
3376: my ($key,$value)=split(/=/,$pair);
1.284 raeburn 3377: $value = &unescape($value);
1.230 foxr 3378: # We could check that we have a number...
3379: if (! defined($value) || $value eq '') {
3380: $value = 1;
3381: }
3382: $hashref->{$key}+=$value;
1.284 raeburn 3383: if ($namespace eq 'nohist_resourcetracker') {
3384: if ($hashref->{$key} < 0) {
3385: $hashref->{$key} = 0;
3386: }
3387: }
1.230 foxr 3388: }
1.311 albertel 3389: if (&untie_user_hash($hashref)) {
1.230 foxr 3390: &Reply( $client, "ok\n", $userinput);
3391: } else {
3392: &Failure($client, "error: ".($!+0)." untie(GDBM) failed ".
3393: "while attempting inc\n", $userinput);
3394: }
3395: } else {
3396: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
3397: "while attempting inc\n", $userinput);
3398: }
3399: } else {
3400: &Failure($client, "refused\n", $userinput);
3401: }
3402:
3403: return 1;
3404: }
3405: ®ister_handler("inc", \&increment_user_value_handler, 0, 1, 0);
3406:
3407: #
3408: # Put a new role for a user. Roles are LonCAPA's packaging of permissions.
3409: # Each 'role' a user has implies a set of permissions. Adding a new role
3410: # for a person grants the permissions packaged with that role
3411: # to that user when the role is selected.
3412: #
3413: # Parameters:
3414: # $cmd - The command string (rolesput).
3415: # $tail - The remainder of the request line. For rolesput this
3416: # consists of a colon separated list that contains:
3417: # The domain and user that is granting the role (logged).
3418: # The domain and user that is getting the role.
3419: # The roles being granted as a set of & separated pairs.
3420: # each pair a key value pair.
3421: # $client - File descriptor connected to the client.
3422: # Returns:
3423: # 0 - If the daemon should exit
3424: # 1 - To continue processing.
3425: #
3426: #
3427: sub roles_put_handler {
3428: my ($cmd, $tail, $client) = @_;
3429:
3430: my $userinput = "$cmd:$tail";
3431:
3432: my ( $exedom, $exeuser, $udom, $uname, $what) = split(/:/,$tail);
3433:
3434:
3435: my $namespace='roles';
3436: chomp($what);
3437: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3438: &GDBM_WRCREAT(), "P",
3439: "$exedom:$exeuser:$what");
3440: #
3441: # Log the attempt to set a role. The {}'s here ensure that the file
3442: # handle is open for the minimal amount of time. Since the flush
3443: # is done on close this improves the chances the log will be an un-
3444: # corrupted ordered thing.
3445: if ($hashref) {
1.261 foxr 3446: my $pass_entry = &get_auth_type($udom, $uname);
3447: my ($auth_type,$pwd) = split(/:/, $pass_entry);
3448: $auth_type = $auth_type.":";
1.230 foxr 3449: my @pairs=split(/\&/,$what);
3450: foreach my $pair (@pairs) {
3451: my ($key,$value)=split(/=/,$pair);
3452: &manage_permissions($key, $udom, $uname,
1.260 foxr 3453: $auth_type);
1.230 foxr 3454: $hashref->{$key}=$value;
3455: }
1.311 albertel 3456: if (&untie_user_hash($hashref)) {
1.230 foxr 3457: &Reply($client, "ok\n", $userinput);
3458: } else {
3459: &Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ".
3460: "while attempting rolesput\n", $userinput);
3461: }
3462: } else {
3463: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
3464: "while attempting rolesput\n", $userinput);
3465: }
3466: return 1;
3467: }
3468: ®ister_handler("rolesput", \&roles_put_handler, 1,1,0); # Encoded client only.
3469:
3470: #
1.231 foxr 3471: # Deletes (removes) a role for a user. This is equivalent to removing
3472: # a permissions package associated with the role from the user's profile.
3473: #
3474: # Parameters:
3475: # $cmd - The command (rolesdel)
3476: # $tail - The remainder of the request line. This consists
3477: # of:
3478: # The domain and user requesting the change (logged)
3479: # The domain and user being changed.
3480: # The roles being revoked. These are shipped to us
3481: # as a bunch of & separated role name keywords.
3482: # $client - The file handle open on the client.
3483: # Returns:
3484: # 1 - Continue processing
3485: # 0 - Exit.
3486: #
3487: sub roles_delete_handler {
3488: my ($cmd, $tail, $client) = @_;
3489:
3490: my $userinput = "$cmd:$tail";
3491:
3492: my ($exedom,$exeuser,$udom,$uname,$what)=split(/:/,$tail);
3493: &Debug("cmd = ".$cmd." exedom= ".$exedom."user = ".$exeuser." udom=".$udom.
3494: "what = ".$what);
3495: my $namespace='roles';
3496: chomp($what);
3497: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3498: &GDBM_WRCREAT(), "D",
3499: "$exedom:$exeuser:$what");
3500:
3501: if ($hashref) {
3502: my @rolekeys=split(/\&/,$what);
3503:
3504: foreach my $key (@rolekeys) {
3505: delete $hashref->{$key};
3506: }
1.315 albertel 3507: if (&untie_user_hash($hashref)) {
1.231 foxr 3508: &Reply($client, "ok\n", $userinput);
3509: } else {
3510: &Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ".
3511: "while attempting rolesdel\n", $userinput);
3512: }
3513: } else {
3514: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
3515: "while attempting rolesdel\n", $userinput);
3516: }
3517:
3518: return 1;
3519: }
3520: ®ister_handler("rolesdel", \&roles_delete_handler, 1,1, 0); # Encoded client only
3521:
3522: # Unencrypted get from a user's profile database. See
3523: # GetProfileEntryEncrypted for a version that does end-to-end encryption.
3524: # This function retrieves a keyed item from a specific named database in the
3525: # user's directory.
3526: #
3527: # Parameters:
3528: # $cmd - Command request keyword (get).
3529: # $tail - Tail of the command. This is a colon separated list
3530: # consisting of the domain and username that uniquely
3531: # identifies the profile,
3532: # The 'namespace' which selects the gdbm file to
3533: # do the lookup in,
3534: # & separated list of keys to lookup. Note that
3535: # the values are returned as an & separated list too.
3536: # $client - File descriptor open on the client.
3537: # Returns:
3538: # 1 - Continue processing.
3539: # 0 - Exit.
3540: #
3541: sub get_profile_entry {
3542: my ($cmd, $tail, $client) = @_;
3543:
3544: my $userinput= "$cmd:$tail";
3545:
3546: my ($udom,$uname,$namespace,$what) = split(/:/,$tail);
3547: chomp($what);
1.255 foxr 3548:
1.390 raeburn 3549:
1.255 foxr 3550: my $replystring = read_profile($udom, $uname, $namespace, $what);
3551: my ($first) = split(/:/,$replystring);
3552: if($first ne "error") {
1.387 albertel 3553: &Reply($client, \$replystring, $userinput);
1.231 foxr 3554: } else {
1.255 foxr 3555: &Failure($client, $replystring." while attempting get\n", $userinput);
1.231 foxr 3556: }
3557: return 1;
1.255 foxr 3558:
3559:
1.231 foxr 3560: }
3561: ®ister_handler("get", \&get_profile_entry, 0,1,0);
3562:
3563: #
3564: # Process the encrypted get request. Note that the request is sent
3565: # in clear, but the reply is encrypted. This is a small covert channel:
3566: # information about the sensitive keys is given to the snooper. Just not
3567: # information about the values of the sensitive key. Hmm if I wanted to
3568: # know these I'd snoop for the egets. Get the profile item names from them
3569: # and then issue a get for them since there's no enforcement of the
3570: # requirement of an encrypted get for particular profile items. If I
3571: # were re-doing this, I'd force the request to be encrypted as well as the
3572: # reply. I'd also just enforce encrypted transactions for all gets since
3573: # that would prevent any covert channel snooping.
3574: #
3575: # Parameters:
3576: # $cmd - Command keyword of request (eget).
1.536 raeburn 3577: # $tail - Tail of the command. See GetProfileEntry
3578: # for more information about this.
1.231 foxr 3579: # $client - File open on the client.
3580: # Returns:
3581: # 1 - Continue processing
3582: # 0 - server should exit.
3583: sub get_profile_entry_encrypted {
3584: my ($cmd, $tail, $client) = @_;
3585:
3586: my $userinput = "$cmd:$tail";
3587:
1.339 albertel 3588: my ($udom,$uname,$namespace,$what) = split(/:/,$tail);
1.231 foxr 3589: chomp($what);
1.255 foxr 3590: my $qresult = read_profile($udom, $uname, $namespace, $what);
3591: my ($first) = split(/:/, $qresult);
3592: if($first ne "error") {
3593:
3594: if ($cipher) {
3595: my $cmdlength=length($qresult);
3596: $qresult.=" ";
3597: my $encqresult='';
3598: for(my $encidx=0;$encidx<=$cmdlength;$encidx+=8) {
3599: $encqresult.= unpack("H16",
3600: $cipher->encrypt(substr($qresult,
3601: $encidx,
3602: 8)));
3603: }
3604: &Reply( $client, "enc:$cmdlength:$encqresult\n", $userinput);
3605: } else {
1.231 foxr 3606: &Failure( $client, "error:no_key\n", $userinput);
3607: }
3608: } else {
1.255 foxr 3609: &Failure($client, "$qresult while attempting eget\n", $userinput);
3610:
1.231 foxr 3611: }
3612:
3613: return 1;
3614: }
1.255 foxr 3615: ®ister_handler("eget", \&get_profile_entry_encrypted, 0, 1, 0);
1.263 albertel 3616:
1.231 foxr 3617: #
3618: # Deletes a key in a user profile database.
3619: #
3620: # Parameters:
3621: # $cmd - Command keyword (del).
3622: # $tail - Command tail. IN this case a colon
3623: # separated list containing:
3624: # The domain and user that identifies uniquely
3625: # the identity of the user.
3626: # The profile namespace (name of the profile
3627: # database file).
3628: # & separated list of keywords to delete.
3629: # $client - File open on client socket.
3630: # Returns:
3631: # 1 - Continue processing
3632: # 0 - Exit server.
3633: #
3634: #
3635: sub delete_profile_entry {
3636: my ($cmd, $tail, $client) = @_;
3637:
3638: my $userinput = "cmd:$tail";
3639:
3640: my ($udom,$uname,$namespace,$what) = split(/:/,$tail);
3641: chomp($what);
3642: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3643: &GDBM_WRCREAT(),
3644: "D",$what);
3645: if ($hashref) {
3646: my @keys=split(/\&/,$what);
3647: foreach my $key (@keys) {
3648: delete($hashref->{$key});
3649: }
1.315 albertel 3650: if (&untie_user_hash($hashref)) {
1.231 foxr 3651: &Reply($client, "ok\n", $userinput);
3652: } else {
3653: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
3654: "while attempting del\n", $userinput);
3655: }
3656: } else {
3657: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
3658: "while attempting del\n", $userinput);
3659: }
3660: return 1;
3661: }
3662: ®ister_handler("del", \&delete_profile_entry, 0, 1, 0);
1.263 albertel 3663:
1.231 foxr 3664: #
3665: # List the set of keys that are defined in a profile database file.
3666: # A successful reply from this will contain an & separated list of
3667: # the keys.
3668: # Parameters:
3669: # $cmd - Command request (keys).
3670: # $tail - Remainder of the request, a colon separated
3671: # list containing domain/user that identifies the
3672: # user being queried, and the database namespace
3673: # (database filename essentially).
3674: # $client - File open on the client.
3675: # Returns:
3676: # 1 - Continue processing.
3677: # 0 - Exit the server.
3678: #
3679: sub get_profile_keys {
3680: my ($cmd, $tail, $client) = @_;
3681:
3682: my $userinput = "$cmd:$tail";
3683:
3684: my ($udom,$uname,$namespace)=split(/:/,$tail);
3685: my $qresult='';
3686: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3687: &GDBM_READER());
3688: if ($hashref) {
3689: foreach my $key (keys %$hashref) {
3690: $qresult.="$key&";
3691: }
1.315 albertel 3692: if (&untie_user_hash($hashref)) {
1.231 foxr 3693: $qresult=~s/\&$//;
1.387 albertel 3694: &Reply($client, \$qresult, $userinput);
1.231 foxr 3695: } else {
3696: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
3697: "while attempting keys\n", $userinput);
3698: }
3699: } else {
3700: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
3701: "while attempting keys\n", $userinput);
3702: }
3703:
3704: return 1;
3705: }
3706: ®ister_handler("keys", \&get_profile_keys, 0, 1, 0);
3707:
3708: #
3709: # Dump the contents of a user profile database.
3710: # Note that this constitutes a very large covert channel too since
3711: # the dump will return sensitive information that is not encrypted.
3712: # The naive security assumption is that the session negotiation ensures
3713: # our client is trusted and I don't believe that's assured at present.
3714: # Sure want badly to go to ssl or tls. Of course if my peer isn't really
3715: # a LonCAPA node they could have negotiated an encryption key too so >sigh<.
3716: #
3717: # Parameters:
3718: # $cmd - The command request keyword (currentdump).
3719: # $tail - Remainder of the request, consisting of a colon
3720: # separated list that has the domain/username and
3721: # the namespace to dump (database file).
3722: # $client - file open on the remote client.
3723: # Returns:
3724: # 1 - Continue processing.
3725: # 0 - Exit the server.
3726: #
3727: sub dump_profile_database {
3728: my ($cmd, $tail, $client) = @_;
3729:
1.494 droeschl 3730: my $res = LONCAPA::Lond::dump_profile_database($tail);
3731:
3732: if ($res =~ /^error:/) {
3733: Failure($client, \$res, "$cmd:$tail");
3734: } else {
3735: Reply($client, \$res, "$cmd:$tail");
3736: }
3737:
3738: return 1;
3739:
3740: #TODO remove
1.231 foxr 3741: my $userinput = "$cmd:$tail";
3742:
3743: my ($udom,$uname,$namespace) = split(/:/,$tail);
3744: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3745: &GDBM_READER());
3746: if ($hashref) {
3747: # Structure of %data:
3748: # $data{$symb}->{$parameter}=$value;
3749: # $data{$symb}->{'v.'.$parameter}=$version;
3750: # since $parameter will be unescaped, we do not
3751: # have to worry about silly parameter names...
3752:
3753: my $qresult='';
3754: my %data = (); # A hash of anonymous hashes..
3755: while (my ($key,$value) = each(%$hashref)) {
3756: my ($v,$symb,$param) = split(/:/,$key);
3757: next if ($v eq 'version' || $symb eq 'keys');
3758: next if (exists($data{$symb}) &&
3759: exists($data{$symb}->{$param}) &&
3760: $data{$symb}->{'v.'.$param} > $v);
3761: $data{$symb}->{$param}=$value;
3762: $data{$symb}->{'v.'.$param}=$v;
3763: }
1.311 albertel 3764: if (&untie_user_hash($hashref)) {
1.231 foxr 3765: while (my ($symb,$param_hash) = each(%data)) {
3766: while(my ($param,$value) = each (%$param_hash)){
3767: next if ($param =~ /^v\./); # Ignore versions...
3768: #
3769: # Just dump the symb=value pairs separated by &
3770: #
3771: $qresult.=$symb.':'.$param.'='.$value.'&';
3772: }
3773: }
3774: chop($qresult);
1.387 albertel 3775: &Reply($client , \$qresult, $userinput);
1.231 foxr 3776: } else {
3777: &Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ".
3778: "while attempting currentdump\n", $userinput);
3779: }
3780: } else {
3781: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
3782: "while attempting currentdump\n", $userinput);
3783: }
3784:
3785: return 1;
3786: }
3787: ®ister_handler("currentdump", \&dump_profile_database, 0, 1, 0);
3788:
3789: #
3790: # Dump a profile database with an optional regular expression
3791: # to match against the keys. In this dump, no effort is made
3792: # to separate symb from version information. Presumably the
3793: # databases that are dumped by this command are of a different
3794: # structure. Need to look at this and improve the documentation of
3795: # both this and the currentdump handler.
3796: # Parameters:
3797: # $cmd - The command keyword.
3798: # $tail - All of the characters after the $cmd:
3799: # These are expected to be a colon
3800: # separated list containing:
3801: # domain/user - identifying the user.
3802: # namespace - identifying the database.
3803: # regexp - optional regular expression
3804: # that is matched against
3805: # database keywords to do
3806: # selective dumps.
1.488 raeburn 3807: # range - optional range of entries
3808: # e.g., 10-20 would return the
3809: # 10th to 19th items, etc.
1.231 foxr 3810: # $client - Channel open on the client.
3811: # Returns:
3812: # 1 - Continue processing.
3813: # Side effects:
3814: # response is written to $client.
3815: #
3816: sub dump_with_regexp {
3817: my ($cmd, $tail, $client) = @_;
3818:
1.494 droeschl 3819: my $res = LONCAPA::Lond::dump_with_regexp($tail, $clientversion);
1.490 droeschl 3820:
3821: if ($res =~ /^error:/) {
3822: Failure($client, \$res, "$cmd:$tail");
3823: } else {
3824: Reply($client, \$res, "$cmd:$tail");
3825: }
1.231 foxr 3826:
3827: return 1;
3828: }
3829: ®ister_handler("dump", \&dump_with_regexp, 0, 1, 0);
3830:
3831: # Store a set of key=value pairs associated with a versioned name.
3832: #
3833: # Parameters:
3834: # $cmd - Request command keyword.
3835: # $tail - Tail of the request. This is a colon
3836: # separated list containing:
3837: # domain/user - User and authentication domain.
3838: # namespace - Name of the database being modified
3839: # rid - Resource keyword to modify.
3840: # what - new value associated with rid.
1.512 raeburn 3841: # laststore - (optional) version=timestamp
3842: # for most recent transaction for rid
3843: # in namespace, when cstore was called
1.231 foxr 3844: #
3845: # $client - Socket open on the client.
3846: #
3847: #
3848: # Returns:
3849: # 1 (keep on processing).
3850: # Side-Effects:
3851: # Writes to the client
1.512 raeburn 3852: # Successful storage will cause either 'ok', or, if $laststore was included
3853: # in the tail of the request, and the version number for the last transaction
3854: # is larger than the version in $laststore, delay:$numtrans , where $numtrans
3855: # is the number of store evevnts recorded for rid in namespace since
3856: # lonnet::store() was called by the client.
3857: #
1.231 foxr 3858: sub store_handler {
3859: my ($cmd, $tail, $client) = @_;
3860:
3861: my $userinput = "$cmd:$tail";
1.512 raeburn 3862: chomp($tail);
3863: my ($udom,$uname,$namespace,$rid,$what,$laststore) =split(/:/,$tail);
1.231 foxr 3864: if ($namespace ne 'roles') {
3865:
3866: my @pairs=split(/\&/,$what);
3867: my $hashref = &tie_user_hash($udom, $uname, $namespace,
1.268 albertel 3868: &GDBM_WRCREAT(), "S",
1.231 foxr 3869: "$rid:$what");
3870: if ($hashref) {
3871: my $now = time;
1.512 raeburn 3872: my $numtrans;
3873: if ($laststore) {
3874: my ($previousversion,$previoustime) = split(/\=/,$laststore);
3875: my ($lastversion,$lasttime) = (0,0);
3876: $lastversion = $hashref->{"version:$rid"};
3877: if ($lastversion) {
3878: $lasttime = $hashref->{"$lastversion:$rid:timestamp"};
3879: }
3880: if (($previousversion) && ($previousversion !~ /\D/)) {
3881: if (($lastversion > $previousversion) && ($lasttime >= $previoustime)) {
3882: $numtrans = $lastversion - $previousversion;
3883: }
3884: } elsif ($lastversion) {
3885: $numtrans = $lastversion;
3886: }
3887: if ($numtrans) {
3888: $numtrans =~ s/D//g;
3889: }
3890: }
1.231 foxr 3891: $hashref->{"version:$rid"}++;
3892: my $version=$hashref->{"version:$rid"};
3893: my $allkeys='';
3894: foreach my $pair (@pairs) {
3895: my ($key,$value)=split(/=/,$pair);
3896: $allkeys.=$key.':';
3897: $hashref->{"$version:$rid:$key"}=$value;
3898: }
3899: $hashref->{"$version:$rid:timestamp"}=$now;
3900: $allkeys.='timestamp';
3901: $hashref->{"$version:keys:$rid"}=$allkeys;
1.311 albertel 3902: if (&untie_user_hash($hashref)) {
1.512 raeburn 3903: my $msg = 'ok';
3904: if ($numtrans) {
3905: $msg = 'delay:'.$numtrans;
3906: }
3907: &Reply($client, "$msg\n", $userinput);
1.231 foxr 3908: } else {
3909: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
3910: "while attempting store\n", $userinput);
3911: }
3912: } else {
3913: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
3914: "while attempting store\n", $userinput);
3915: }
3916: } else {
3917: &Failure($client, "refused\n", $userinput);
3918: }
3919:
3920: return 1;
3921: }
3922: ®ister_handler("store", \&store_handler, 0, 1, 0);
1.263 albertel 3923:
1.323 albertel 3924: # Modify a set of key=value pairs associated with a versioned name.
3925: #
3926: # Parameters:
3927: # $cmd - Request command keyword.
3928: # $tail - Tail of the request. This is a colon
3929: # separated list containing:
3930: # domain/user - User and authentication domain.
3931: # namespace - Name of the database being modified
3932: # rid - Resource keyword to modify.
3933: # v - Version item to modify
3934: # what - new value associated with rid.
3935: #
3936: # $client - Socket open on the client.
3937: #
3938: #
3939: # Returns:
3940: # 1 (keep on processing).
3941: # Side-Effects:
3942: # Writes to the client
3943: sub putstore_handler {
3944: my ($cmd, $tail, $client) = @_;
3945:
3946: my $userinput = "$cmd:$tail";
3947:
3948: my ($udom,$uname,$namespace,$rid,$v,$what) =split(/:/,$tail);
3949: if ($namespace ne 'roles') {
3950:
3951: chomp($what);
3952: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3953: &GDBM_WRCREAT(), "M",
3954: "$rid:$v:$what");
3955: if ($hashref) {
3956: my $now = time;
3957: my %data = &hash_extract($what);
3958: my @allkeys;
3959: while (my($key,$value) = each(%data)) {
3960: push(@allkeys,$key);
3961: $hashref->{"$v:$rid:$key"} = $value;
3962: }
3963: my $allkeys = join(':',@allkeys);
3964: $hashref->{"$v:keys:$rid"}=$allkeys;
3965:
3966: if (&untie_user_hash($hashref)) {
3967: &Reply($client, "ok\n", $userinput);
3968: } else {
3969: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
3970: "while attempting store\n", $userinput);
3971: }
3972: } else {
3973: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
3974: "while attempting store\n", $userinput);
3975: }
3976: } else {
3977: &Failure($client, "refused\n", $userinput);
3978: }
3979:
3980: return 1;
3981: }
3982: ®ister_handler("putstore", \&putstore_handler, 0, 1, 0);
3983:
3984: sub hash_extract {
3985: my ($str)=@_;
3986: my %hash;
3987: foreach my $pair (split(/\&/,$str)) {
3988: my ($key,$value)=split(/=/,$pair);
3989: $hash{$key}=$value;
3990: }
3991: return (%hash);
3992: }
3993: sub hash_to_str {
3994: my ($hash_ref)=@_;
3995: my $str;
3996: foreach my $key (keys(%$hash_ref)) {
3997: $str.=$key.'='.$hash_ref->{$key}.'&';
3998: }
3999: $str=~s/\&$//;
4000: return $str;
4001: }
4002:
1.231 foxr 4003: #
4004: # Dump out all versions of a resource that has key=value pairs associated
4005: # with it for each version. These resources are built up via the store
4006: # command.
4007: #
4008: # Parameters:
4009: # $cmd - Command keyword.
4010: # $tail - Remainder of the request which consists of:
4011: # domain/user - User and auth. domain.
4012: # namespace - name of resource database.
4013: # rid - Resource id.
4014: # $client - socket open on the client.
4015: #
4016: # Returns:
4017: # 1 indicating the caller should not yet exit.
4018: # Side-effects:
4019: # Writes a reply to the client.
4020: # The reply is a string of the following shape:
4021: # version=current&version:keys=k1:k2...&1:k1=v1&1:k2=v2...
4022: # Where the 1 above represents version 1.
4023: # this continues for all pairs of keys in all versions.
4024: #
4025: #
4026: #
4027: #
4028: sub restore_handler {
4029: my ($cmd, $tail, $client) = @_;
4030:
4031: my $userinput = "$cmd:$tail"; # Only used for logging purposes.
1.351 banghart 4032: my ($udom,$uname,$namespace,$rid) = split(/:/,$tail);
1.352 albertel 4033: $namespace=~s/\//\_/g;
1.350 albertel 4034: $namespace = &LONCAPA::clean_username($namespace);
1.349 albertel 4035:
1.231 foxr 4036: chomp($rid);
4037: my $qresult='';
1.309 albertel 4038: my $hashref = &tie_user_hash($udom, $uname, $namespace, &GDBM_READER());
4039: if ($hashref) {
4040: my $version=$hashref->{"version:$rid"};
1.231 foxr 4041: $qresult.="version=$version&";
4042: my $scope;
4043: for ($scope=1;$scope<=$version;$scope++) {
1.309 albertel 4044: my $vkeys=$hashref->{"$scope:keys:$rid"};
1.231 foxr 4045: my @keys=split(/:/,$vkeys);
4046: my $key;
4047: $qresult.="$scope:keys=$vkeys&";
4048: foreach $key (@keys) {
1.309 albertel 4049: $qresult.="$scope:$key=".$hashref->{"$scope:$rid:$key"}."&";
1.231 foxr 4050: }
4051: }
1.311 albertel 4052: if (&untie_user_hash($hashref)) {
1.231 foxr 4053: $qresult=~s/\&$//;
1.387 albertel 4054: &Reply( $client, \$qresult, $userinput);
1.231 foxr 4055: } else {
4056: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4057: "while attempting restore\n", $userinput);
4058: }
4059: } else {
4060: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
4061: "while attempting restore\n", $userinput);
4062: }
4063:
4064: return 1;
4065:
4066:
4067: }
4068: ®ister_handler("restore", \&restore_handler, 0,1,0);
1.234 foxr 4069:
4070: #
1.324 raeburn 4071: # Add a chat message to a synchronous discussion board.
1.234 foxr 4072: #
4073: # Parameters:
4074: # $cmd - Request keyword.
4075: # $tail - Tail of the command. A colon separated list
4076: # containing:
4077: # cdom - Domain on which the chat board lives
1.324 raeburn 4078: # cnum - Course containing the chat board.
4079: # newpost - Body of the posting.
4080: # group - Optional group, if chat board is only
4081: # accessible in a group within the course
1.234 foxr 4082: # $client - Socket open on the client.
4083: # Returns:
4084: # 1 - Indicating caller should keep on processing.
4085: #
4086: # Side-effects:
4087: # writes a reply to the client.
4088: #
4089: #
4090: sub send_chat_handler {
4091: my ($cmd, $tail, $client) = @_;
4092:
4093:
4094: my $userinput = "$cmd:$tail";
4095:
1.324 raeburn 4096: my ($cdom,$cnum,$newpost,$group)=split(/\:/,$tail);
4097: &chat_add($cdom,$cnum,$newpost,$group);
1.234 foxr 4098: &Reply($client, "ok\n", $userinput);
4099:
4100: return 1;
4101: }
4102: ®ister_handler("chatsend", \&send_chat_handler, 0, 1, 0);
1.263 albertel 4103:
1.234 foxr 4104: #
1.324 raeburn 4105: # Retrieve the set of chat messages from a discussion board.
1.234 foxr 4106: #
4107: # Parameters:
4108: # $cmd - Command keyword that initiated the request.
4109: # $tail - Remainder of the request after the command
4110: # keyword. In this case a colon separated list of
4111: # chat domain - Which discussion board.
4112: # chat id - Discussion thread(?)
4113: # domain/user - Authentication domain and username
4114: # of the requesting person.
1.324 raeburn 4115: # group - Optional course group containing
4116: # the board.
1.234 foxr 4117: # $client - Socket open on the client program.
4118: # Returns:
4119: # 1 - continue processing
4120: # Side effects:
4121: # Response is written to the client.
4122: #
4123: sub retrieve_chat_handler {
4124: my ($cmd, $tail, $client) = @_;
4125:
4126:
4127: my $userinput = "$cmd:$tail";
4128:
1.324 raeburn 4129: my ($cdom,$cnum,$udom,$uname,$group)=split(/\:/,$tail);
1.234 foxr 4130: my $reply='';
1.324 raeburn 4131: foreach (&get_chat($cdom,$cnum,$udom,$uname,$group)) {
1.234 foxr 4132: $reply.=&escape($_).':';
4133: }
4134: $reply=~s/\:$//;
1.387 albertel 4135: &Reply($client, \$reply, $userinput);
1.234 foxr 4136:
4137:
4138: return 1;
4139: }
4140: ®ister_handler("chatretr", \&retrieve_chat_handler, 0, 1, 0);
4141:
4142: #
4143: # Initiate a query of an sql database. SQL query repsonses get put in
4144: # a file for later retrieval. This prevents sql query results from
4145: # bottlenecking the system. Note that with loncnew, perhaps this is
4146: # less of an issue since multiple outstanding requests can be concurrently
4147: # serviced.
4148: #
4149: # Parameters:
1.535 raeburn 4150: # $cmd - Command keyword that initiated the request.
1.234 foxr 4151: # $tail - Remainder of the command after the keyword.
4152: # For this function, this consists of a query and
4153: # 3 arguments that are self-documentingly labelled
4154: # in the original arg1, arg2, arg3.
4155: # $client - Socket open on the client.
4156: # Return:
4157: # 1 - Indicating processing should continue.
4158: # Side-effects:
4159: # a reply is written to $client.
4160: #
4161: sub send_query_handler {
4162: my ($cmd, $tail, $client) = @_;
4163:
4164: my $userinput = "$cmd:$tail";
4165:
4166: my ($query,$arg1,$arg2,$arg3)=split(/\:/,$tail);
4167: $query=~s/\n*$//g;
1.534 raeburn 4168: if (($query eq 'usersearch') || ($query eq 'instdirsearch')) {
4169: my $usersearchconf = &get_usersearch_config($currentdomainid,'directorysrch');
4170: my $earlyout;
4171: if (ref($usersearchconf) eq 'HASH') {
4172: if ($currentdomainid eq $clienthomedom) {
4173: if ($query eq 'usersearch') {
4174: if ($usersearchconf->{'lcavailable'} eq '0') {
4175: $earlyout = 1;
4176: }
4177: } else {
4178: if ($usersearchconf->{'available'} eq '0') {
4179: $earlyout = 1;
4180: }
4181: }
4182: } else {
4183: if ($query eq 'usersearch') {
4184: if ($usersearchconf->{'lclocalonly'}) {
4185: $earlyout = 1;
4186: }
4187: } else {
4188: if ($usersearchconf->{'localonly'}) {
4189: $earlyout = 1;
4190: }
4191: }
4192: }
4193: }
4194: if ($earlyout) {
4195: &Reply($client, "query_not_authorized\n");
4196: return 1;
4197: }
4198: }
1.234 foxr 4199: &Reply($client, "". &sql_reply("$clientname\&$query".
4200: "\&$arg1"."\&$arg2"."\&$arg3")."\n",
4201: $userinput);
4202:
4203: return 1;
4204: }
4205: ®ister_handler("querysend", \&send_query_handler, 0, 1, 0);
4206:
4207: #
4208: # Add a reply to an sql query. SQL queries are done asyncrhonously.
4209: # The query is submitted via a "querysend" transaction.
4210: # There it is passed on to the lonsql daemon, queued and issued to
4211: # mysql.
4212: # This transaction is invoked when the sql transaction is complete
4213: # it stores the query results in flie and indicates query completion.
4214: # presumably local software then fetches this response... I'm guessing
4215: # the sequence is: lonc does a querysend, we ask lonsql to do it.
4216: # lonsql on completion of the query interacts with the lond of our
4217: # client to do a query reply storing two files:
4218: # - id - The results of the query.
4219: # - id.end - Indicating the transaction completed.
4220: # NOTE: id is a unique id assigned to the query and querysend time.
4221: # Parameters:
4222: # $cmd - Command keyword that initiated this request.
4223: # $tail - Remainder of the tail. In this case that's a colon
4224: # separated list containing the query Id and the
4225: # results of the query.
4226: # $client - Socket open on the client.
4227: # Return:
4228: # 1 - Indicating that we should continue processing.
4229: # Side effects:
4230: # ok written to the client.
4231: #
4232: sub reply_query_handler {
4233: my ($cmd, $tail, $client) = @_;
4234:
4235:
4236: my $userinput = "$cmd:$tail";
4237:
1.339 albertel 4238: my ($id,$reply)=split(/:/,$tail);
1.234 foxr 4239: my $store;
4240: my $execdir=$perlvar{'lonDaemons'};
4241: if ($store=IO::File->new(">$execdir/tmp/$id")) {
4242: $reply=~s/\&/\n/g;
4243: print $store $reply;
4244: close $store;
4245: my $store2=IO::File->new(">$execdir/tmp/$id.end");
4246: print $store2 "done\n";
4247: close $store2;
4248: &Reply($client, "ok\n", $userinput);
4249: } else {
4250: &Failure($client, "error: ".($!+0)
4251: ." IO::File->new Failed ".
4252: "while attempting queryreply\n", $userinput);
4253: }
4254:
4255:
4256: return 1;
4257: }
4258: ®ister_handler("queryreply", \&reply_query_handler, 0, 1, 0);
4259:
4260: #
4261: # Process the courseidput request. Not quite sure what this means
4262: # at the system level sense. It appears a gdbm file in the
4263: # /home/httpd/lonUsers/$domain/nohist_courseids is tied and
4264: # a set of entries made in that database.
4265: #
4266: # Parameters:
4267: # $cmd - The command keyword that initiated this request.
4268: # $tail - Tail of the command. In this case consists of a colon
4269: # separated list contaning the domain to apply this to and
4270: # an ampersand separated list of keyword=value pairs.
1.272 raeburn 4271: # Each value is a colon separated list that includes:
4272: # description, institutional code and course owner.
4273: # For backward compatibility with versions included
4274: # in LON-CAPA 1.1.X (and earlier) and 1.2.X, institutional
4275: # code and/or course owner are preserved from the existing
4276: # record when writing a new record in response to 1.1 or
4277: # 1.2 implementations of lonnet::flushcourselogs().
4278: #
1.234 foxr 4279: # $client - Socket open on the client.
4280: # Returns:
4281: # 1 - indicating that processing should continue
4282: #
4283: # Side effects:
4284: # reply is written to the client.
4285: #
4286: sub put_course_id_handler {
4287: my ($cmd, $tail, $client) = @_;
4288:
4289:
4290: my $userinput = "$cmd:$tail";
4291:
1.266 raeburn 4292: my ($udom, $what) = split(/:/, $tail,2);
1.234 foxr 4293: chomp($what);
4294: my $now=time;
4295: my @pairs=split(/\&/,$what);
4296:
4297: my $hashref = &tie_domain_hash($udom, "nohist_courseids", &GDBM_WRCREAT());
4298: if ($hashref) {
4299: foreach my $pair (@pairs) {
1.271 raeburn 4300: my ($key,$courseinfo) = split(/=/,$pair,2);
4301: $courseinfo =~ s/=/:/g;
1.384 raeburn 4302: if (defined($hashref->{$key})) {
4303: my $value = &Apache::lonnet::thaw_unescape($hashref->{$key});
4304: if (ref($value) eq 'HASH') {
4305: my @items = ('description','inst_code','owner','type');
4306: my @new_items = split(/:/,$courseinfo,-1);
4307: my %storehash;
4308: for (my $i=0; $i<@new_items; $i++) {
1.391 raeburn 4309: $storehash{$items[$i]} = &unescape($new_items[$i]);
1.384 raeburn 4310: }
4311: $hashref->{$key} =
4312: &Apache::lonnet::freeze_escape(\%storehash);
4313: my $unesc_key = &unescape($key);
4314: $hashref->{&escape('lasttime:'.$unesc_key)} = $now;
4315: next;
1.383 raeburn 4316: }
1.384 raeburn 4317: }
4318: my @current_items = split(/:/,$hashref->{$key},-1);
4319: shift(@current_items); # remove description
4320: pop(@current_items); # remove last access
4321: my $numcurrent = scalar(@current_items);
4322: if ($numcurrent > 3) {
4323: $numcurrent = 3;
4324: }
4325: my @new_items = split(/:/,$courseinfo,-1);
4326: my $numnew = scalar(@new_items);
4327: if ($numcurrent > 0) {
4328: if ($numnew <= $numcurrent) { # flushcourselogs() from pre 2.2
4329: for (my $j=$numcurrent-$numnew; $j>=0; $j--) {
4330: $courseinfo .= ':'.$current_items[$numcurrent-$j-1];
1.333 raeburn 4331: }
1.272 raeburn 4332: }
4333: }
1.384 raeburn 4334: $hashref->{$key}=$courseinfo.':'.$now;
1.234 foxr 4335: }
1.311 albertel 4336: if (&untie_domain_hash($hashref)) {
1.253 foxr 4337: &Reply( $client, "ok\n", $userinput);
1.234 foxr 4338: } else {
1.253 foxr 4339: &Failure($client, "error: ".($!+0)
1.234 foxr 4340: ." untie(GDBM) Failed ".
4341: "while attempting courseidput\n", $userinput);
4342: }
4343: } else {
1.253 foxr 4344: &Failure($client, "error: ".($!+0)
1.234 foxr 4345: ." tie(GDBM) Failed ".
4346: "while attempting courseidput\n", $userinput);
4347: }
4348:
4349: return 1;
4350: }
4351: ®ister_handler("courseidput", \&put_course_id_handler, 0, 1, 0);
4352:
1.383 raeburn 4353: sub put_course_id_hash_handler {
4354: my ($cmd, $tail, $client) = @_;
4355: my $userinput = "$cmd:$tail";
1.384 raeburn 4356: my ($udom,$mode,$what) = split(/:/, $tail,3);
1.383 raeburn 4357: chomp($what);
4358: my $now=time;
4359: my @pairs=split(/\&/,$what);
1.384 raeburn 4360: my $hashref = &tie_domain_hash($udom, "nohist_courseids", &GDBM_WRCREAT());
1.383 raeburn 4361: if ($hashref) {
4362: foreach my $pair (@pairs) {
4363: my ($key,$value)=split(/=/,$pair);
1.384 raeburn 4364: my $unesc_key = &unescape($key);
4365: if ($mode ne 'timeonly') {
4366: if (!defined($hashref->{&escape('lasttime:'.$unesc_key)})) {
4367: my $curritems = &Apache::lonnet::thaw_unescape($key);
4368: if (ref($curritems) ne 'HASH') {
4369: my @current_items = split(/:/,$hashref->{$key},-1);
4370: my $lasttime = pop(@current_items);
4371: $hashref->{&escape('lasttime:'.$unesc_key)} = $lasttime;
4372: } else {
4373: $hashref->{&escape('lasttime:'.$unesc_key)} = '';
4374: }
4375: }
4376: $hashref->{$key} = $value;
4377: }
4378: if ($mode ne 'notime') {
4379: $hashref->{&escape('lasttime:'.$unesc_key)} = $now;
4380: }
1.383 raeburn 4381: }
4382: if (&untie_domain_hash($hashref)) {
4383: &Reply($client, "ok\n", $userinput);
4384: } else {
4385: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4386: "while attempting courseidputhash\n", $userinput);
4387: }
4388: } else {
4389: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
4390: "while attempting courseidputhash\n", $userinput);
4391: }
4392: return 1;
4393: }
4394: ®ister_handler("courseidputhash", \&put_course_id_hash_handler, 0, 1, 0);
4395:
1.234 foxr 4396: # Retrieves the value of a course id resource keyword pattern
4397: # defined since a starting date. Both the starting date and the
4398: # keyword pattern are optional. If the starting date is not supplied it
4399: # is treated as the beginning of time. If the pattern is not found,
4400: # it is treatred as "." matching everything.
4401: #
4402: # Parameters:
4403: # $cmd - Command keyword that resulted in us being dispatched.
4404: # $tail - The remainder of the command that, in this case, consists
4405: # of a colon separated list of:
4406: # domain - The domain in which the course database is
4407: # defined.
4408: # since - Optional parameter describing the minimum
4409: # time of definition(?) of the resources that
4410: # will match the dump.
4411: # description - regular expression that is used to filter
4412: # the dump. Only keywords matching this regexp
4413: # will be used.
1.272 raeburn 4414: # institutional code - optional supplied code to filter
4415: # the dump. Only courses with an institutional code
4416: # that match the supplied code will be returned.
1.336 raeburn 4417: # owner - optional supplied username and domain of owner to
4418: # filter the dump. Only courses for which the course
4419: # owner matches the supplied username and/or domain
4420: # will be returned. Pre-2.2.0 legacy entries from
4421: # nohist_courseiddump will only contain usernames.
1.384 raeburn 4422: # type - optional parameter for selection
1.418 raeburn 4423: # regexp_ok - if 1 or -1 allow the supplied institutional code
4424: # filter to behave as a regular expression:
4425: # 1 will not exclude the course if the instcode matches the RE
4426: # -1 will exclude the course if the instcode matches the RE
1.384 raeburn 4427: # rtn_as_hash - whether to return the information available for
4428: # each matched item as a frozen hash of all
4429: # key, value pairs in the item's hash, or as a
4430: # colon-separated list of (in order) description,
4431: # institutional code, and course owner.
1.404 raeburn 4432: # selfenrollonly - filter by courses allowing self-enrollment
4433: # now or in the future (selfenrollonly = 1).
4434: # catfilter - filter by course category, assigned to a course
4435: # using manually defined categories (i.e., not
1.407 raeburn 4436: # self-cataloging based on on institutional code).
1.404 raeburn 4437: # showhidden - include course in results even if course
1.407 raeburn 4438: # was set to be excluded from course catalog (DC only).
1.404 raeburn 4439: # caller - if set to 'coursecatalog', courses set to be hidden
4440: # from course catalog will be excluded from results (unless
4441: # overridden by "showhidden".
1.427 raeburn 4442: # cloner - escaped username:domain of course cloner (if picking course to
1.419 raeburn 4443: # clone).
4444: # cc_clone_list - escaped comma separated list of courses for which
4445: # course cloner has active CC role (and so can clone
4446: # automatically).
1.427 raeburn 4447: # cloneonly - filter by courses for which cloner has rights to clone.
4448: # createdbefore - include courses for which creation date preceeded this date.
4449: # createdafter - include courses for which creation date followed this date.
4450: # creationcontext - include courses created in specified context
1.404 raeburn 4451: #
1.445 raeburn 4452: # domcloner - flag to indicate if user can create CCs in course's domain.
1.505 raeburn 4453: # If so, ability to clone course is automatic.
4454: # hasuniquecode - filter by courses for which a six character unique code has
4455: # been set.
1.445 raeburn 4456: #
1.234 foxr 4457: # $client - The socket open on the client.
4458: # Returns:
4459: # 1 - Continue processing.
4460: # Side Effects:
4461: # a reply is written to $client.
4462: sub dump_course_id_handler {
4463: my ($cmd, $tail, $client) = @_;
1.494 droeschl 4464:
4465: my $res = LONCAPA::Lond::dump_course_id_handler($tail);
4466: if ($res =~ /^error:/) {
4467: Failure($client, \$res, "$cmd:$tail");
4468: } else {
4469: Reply($client, \$res, "$cmd:$tail");
4470: }
4471:
4472: return 1;
4473:
4474: #TODO remove
1.234 foxr 4475: my $userinput = "$cmd:$tail";
4476:
1.333 raeburn 4477: my ($udom,$since,$description,$instcodefilter,$ownerfilter,$coursefilter,
1.404 raeburn 4478: $typefilter,$regexp_ok,$rtn_as_hash,$selfenrollonly,$catfilter,$showhidden,
1.427 raeburn 4479: $caller,$cloner,$cc_clone_list,$cloneonly,$createdbefore,$createdafter,
1.505 raeburn 4480: $creationcontext,$domcloner,$hasuniquecode) =split(/:/,$tail);
1.397 raeburn 4481: my $now = time;
1.419 raeburn 4482: my ($cloneruname,$clonerudom,%cc_clone);
1.234 foxr 4483: if (defined($description)) {
4484: $description=&unescape($description);
4485: } else {
4486: $description='.';
4487: }
1.266 raeburn 4488: if (defined($instcodefilter)) {
4489: $instcodefilter=&unescape($instcodefilter);
4490: } else {
4491: $instcodefilter='.';
4492: }
1.336 raeburn 4493: my ($ownerunamefilter,$ownerdomfilter);
1.266 raeburn 4494: if (defined($ownerfilter)) {
4495: $ownerfilter=&unescape($ownerfilter);
1.336 raeburn 4496: if ($ownerfilter ne '.' && defined($ownerfilter)) {
4497: if ($ownerfilter =~ /^([^:]*):([^:]*)$/) {
4498: $ownerunamefilter = $1;
4499: $ownerdomfilter = $2;
4500: } else {
4501: $ownerunamefilter = $ownerfilter;
4502: $ownerdomfilter = '';
4503: }
4504: }
1.266 raeburn 4505: } else {
4506: $ownerfilter='.';
4507: }
1.336 raeburn 4508:
1.282 raeburn 4509: if (defined($coursefilter)) {
4510: $coursefilter=&unescape($coursefilter);
4511: } else {
4512: $coursefilter='.';
4513: }
1.333 raeburn 4514: if (defined($typefilter)) {
4515: $typefilter=&unescape($typefilter);
4516: } else {
4517: $typefilter='.';
4518: }
1.344 raeburn 4519: if (defined($regexp_ok)) {
4520: $regexp_ok=&unescape($regexp_ok);
4521: }
1.401 raeburn 4522: if (defined($catfilter)) {
4523: $catfilter=&unescape($catfilter);
4524: }
1.419 raeburn 4525: if (defined($cloner)) {
4526: $cloner = &unescape($cloner);
4527: ($cloneruname,$clonerudom) = ($cloner =~ /^($LONCAPA::match_username):($LONCAPA::match_domain)$/);
4528: }
4529: if (defined($cc_clone_list)) {
4530: $cc_clone_list = &unescape($cc_clone_list);
4531: my @cc_cloners = split('&',$cc_clone_list);
4532: foreach my $cid (@cc_cloners) {
4533: my ($clonedom,$clonenum) = split(':',$cid);
4534: next if ($clonedom ne $udom);
4535: $cc_clone{$clonedom.'_'.$clonenum} = 1;
4536: }
4537: }
1.431 raeburn 4538: if ($createdbefore ne '') {
1.427 raeburn 4539: $createdbefore = &unescape($createdbefore);
4540: } else {
4541: $createdbefore = 0;
4542: }
1.431 raeburn 4543: if ($createdafter ne '') {
1.427 raeburn 4544: $createdafter = &unescape($createdafter);
4545: } else {
4546: $createdafter = 0;
4547: }
1.431 raeburn 4548: if ($creationcontext ne '') {
1.427 raeburn 4549: $creationcontext = &unescape($creationcontext);
4550: } else {
4551: $creationcontext = '.';
4552: }
1.505 raeburn 4553: unless ($hasuniquecode) {
4554: $hasuniquecode = '.';
4555: }
1.384 raeburn 4556: my $unpack = 1;
1.485 raeburn 4557: if ($description eq '.' && $instcodefilter eq '.' && $ownerfilter eq '.' &&
1.384 raeburn 4558: $typefilter eq '.') {
4559: $unpack = 0;
4560: }
4561: if (!defined($since)) { $since=0; }
1.234 foxr 4562: my $qresult='';
4563: my $hashref = &tie_domain_hash($udom, "nohist_courseids", &GDBM_WRCREAT());
4564: if ($hashref) {
1.384 raeburn 4565: while (my ($key,$value) = each(%$hashref)) {
1.397 raeburn 4566: my ($unesc_key,$lasttime_key,$lasttime,$is_hash,%val,
1.427 raeburn 4567: %unesc_val,$selfenroll_end,$selfenroll_types,$created,
4568: $context);
1.384 raeburn 4569: $unesc_key = &unescape($key);
4570: if ($unesc_key =~ /^lasttime:/) {
4571: next;
4572: } else {
4573: $lasttime_key = &escape('lasttime:'.$unesc_key);
4574: }
4575: if ($hashref->{$lasttime_key} ne '') {
4576: $lasttime = $hashref->{$lasttime_key};
4577: next if ($lasttime<$since);
4578: }
1.419 raeburn 4579: my ($canclone,$valchange);
1.384 raeburn 4580: my $items = &Apache::lonnet::thaw_unescape($value);
4581: if (ref($items) eq 'HASH') {
1.429 raeburn 4582: if ($hashref->{$lasttime_key} eq '') {
1.430 raeburn 4583: next if ($since > 1);
1.429 raeburn 4584: }
1.384 raeburn 4585: $is_hash = 1;
1.445 raeburn 4586: if ($domcloner) {
4587: $canclone = 1;
4588: } elsif (defined($clonerudom)) {
1.419 raeburn 4589: if ($items->{'cloners'}) {
4590: my @cloneable = split(',',$items->{'cloners'});
4591: if (@cloneable) {
4592: if (grep(/^\*$/,@cloneable)) {
4593: $canclone = 1;
4594: } elsif (grep(/^\*:\Q$clonerudom\E$/,@cloneable)) {
4595: $canclone = 1;
4596: } elsif (grep(/^\Q$cloneruname\E:\Q$clonerudom\E$/,@cloneable)) {
4597: $canclone = 1;
4598: }
4599: }
4600: unless ($canclone) {
4601: if ($cloneruname ne '' && $clonerudom ne '') {
4602: if ($cc_clone{$unesc_key}) {
4603: $canclone = 1;
4604: $items->{'cloners'} .= ','.$cloneruname.':'.
4605: $clonerudom;
4606: $valchange = 1;
4607: }
4608: }
4609: }
4610: } elsif (defined($cloneruname)) {
4611: if ($cc_clone{$unesc_key}) {
4612: $canclone = 1;
4613: $items->{'cloners'} = $cloneruname.':'.$clonerudom;
4614: $valchange = 1;
4615: }
1.437 raeburn 4616: unless ($canclone) {
4617: if ($items->{'owner'} =~ /:/) {
4618: if ($items->{'owner'} eq $cloner) {
4619: $canclone = 1;
4620: }
1.444 raeburn 4621: } elsif ($cloner eq $items->{'owner'}.':'.$udom) {
1.437 raeburn 4622: $canclone = 1;
4623: }
4624: if ($canclone) {
4625: $items->{'cloners'} = $cloneruname.':'.$clonerudom;
4626: $valchange = 1;
4627: }
4628: }
1.419 raeburn 4629: }
4630: }
1.384 raeburn 4631: if ($unpack || !$rtn_as_hash) {
4632: $unesc_val{'descr'} = $items->{'description'};
4633: $unesc_val{'inst_code'} = $items->{'inst_code'};
4634: $unesc_val{'owner'} = $items->{'owner'};
4635: $unesc_val{'type'} = $items->{'type'};
1.419 raeburn 4636: $unesc_val{'cloners'} = $items->{'cloners'};
1.427 raeburn 4637: $unesc_val{'created'} = $items->{'created'};
4638: $unesc_val{'context'} = $items->{'context'};
1.404 raeburn 4639: }
4640: $selfenroll_types = $items->{'selfenroll_types'};
4641: $selfenroll_end = $items->{'selfenroll_end_date'};
1.427 raeburn 4642: $created = $items->{'created'};
4643: $context = $items->{'context'};
1.505 raeburn 4644: if ($hasuniquecode ne '.') {
4645: next unless ($items->{'uniquecode'});
4646: }
1.404 raeburn 4647: if ($selfenrollonly) {
4648: next if (!$selfenroll_types);
4649: if (($selfenroll_end > 0) && ($selfenroll_end <= $now)) {
4650: next;
1.397 raeburn 4651: }
1.404 raeburn 4652: }
1.427 raeburn 4653: if ($creationcontext ne '.') {
4654: next if (($context ne '') && ($context ne $creationcontext));
4655: }
4656: if ($createdbefore > 0) {
4657: next if (($created eq '') || ($created > $createdbefore));
4658: }
4659: if ($createdafter > 0) {
4660: next if (($created eq '') || ($created <= $createdafter));
4661: }
1.404 raeburn 4662: if ($catfilter ne '') {
1.406 raeburn 4663: next if ($items->{'categories'} eq '');
4664: my @categories = split('&',$items->{'categories'});
1.407 raeburn 4665: next if (@categories == 0);
4666: my @subcats = split('&',$catfilter);
4667: my $matchcat = 0;
4668: foreach my $cat (@categories) {
4669: if (grep(/^\Q$cat\E$/,@subcats)) {
4670: $matchcat = 1;
4671: last;
4672: }
4673: }
4674: next if (!$matchcat);
1.404 raeburn 4675: }
4676: if ($caller eq 'coursecatalog') {
1.405 raeburn 4677: if ($items->{'hidefromcat'} eq 'yes') {
4678: next if !$showhidden;
1.401 raeburn 4679: }
1.384 raeburn 4680: }
1.383 raeburn 4681: } else {
1.401 raeburn 4682: next if ($catfilter ne '');
1.419 raeburn 4683: next if ($selfenrollonly);
1.427 raeburn 4684: next if ($createdbefore || $createdafter);
4685: next if ($creationcontext ne '.');
1.419 raeburn 4686: if ((defined($clonerudom)) && (defined($cloneruname))) {
4687: if ($cc_clone{$unesc_key}) {
4688: $canclone = 1;
4689: $val{'cloners'} = &escape($cloneruname.':'.$clonerudom);
4690: }
4691: }
1.384 raeburn 4692: $is_hash = 0;
1.388 raeburn 4693: my @courseitems = split(/:/,$value);
1.403 raeburn 4694: $lasttime = pop(@courseitems);
1.402 raeburn 4695: if ($hashref->{$lasttime_key} eq '') {
4696: next if ($lasttime<$since);
4697: }
1.384 raeburn 4698: ($val{'descr'},$val{'inst_code'},$val{'owner'},$val{'type'}) = @courseitems;
1.383 raeburn 4699: }
1.419 raeburn 4700: if ($cloneonly) {
4701: next unless ($canclone);
4702: }
1.266 raeburn 4703: my $match = 1;
1.384 raeburn 4704: if ($description ne '.') {
4705: if (!$is_hash) {
4706: $unesc_val{'descr'} = &unescape($val{'descr'});
4707: }
4708: if (eval{$unesc_val{'descr'} !~ /\Q$description\E/i}) {
1.266 raeburn 4709: $match = 0;
1.384 raeburn 4710: }
1.266 raeburn 4711: }
1.384 raeburn 4712: if ($instcodefilter ne '.') {
4713: if (!$is_hash) {
4714: $unesc_val{'inst_code'} = &unescape($val{'inst_code'});
4715: }
1.418 raeburn 4716: if ($regexp_ok == 1) {
1.384 raeburn 4717: if (eval{$unesc_val{'inst_code'} !~ /$instcodefilter/}) {
1.344 raeburn 4718: $match = 0;
4719: }
1.418 raeburn 4720: } elsif ($regexp_ok == -1) {
4721: if (eval{$unesc_val{'inst_code'} =~ /$instcodefilter/}) {
4722: $match = 0;
4723: }
1.344 raeburn 4724: } else {
1.384 raeburn 4725: if (eval{$unesc_val{'inst_code'} !~ /\Q$instcodefilter\E/i}) {
1.344 raeburn 4726: $match = 0;
4727: }
1.266 raeburn 4728: }
1.234 foxr 4729: }
1.384 raeburn 4730: if ($ownerfilter ne '.') {
4731: if (!$is_hash) {
4732: $unesc_val{'owner'} = &unescape($val{'owner'});
4733: }
1.336 raeburn 4734: if (($ownerunamefilter ne '') && ($ownerdomfilter ne '')) {
1.384 raeburn 4735: if ($unesc_val{'owner'} =~ /:/) {
4736: if (eval{$unesc_val{'owner'} !~
4737: /\Q$ownerunamefilter\E:\Q$ownerdomfilter\E$/i}) {
1.336 raeburn 4738: $match = 0;
4739: }
4740: } else {
1.384 raeburn 4741: if (eval{$unesc_val{'owner'} !~ /\Q$ownerunamefilter\E/i}) {
1.336 raeburn 4742: $match = 0;
4743: }
4744: }
4745: } elsif ($ownerunamefilter ne '') {
1.384 raeburn 4746: if ($unesc_val{'owner'} =~ /:/) {
4747: if (eval{$unesc_val{'owner'} !~ /\Q$ownerunamefilter\E:[^:]+$/i}) {
1.336 raeburn 4748: $match = 0;
4749: }
4750: } else {
1.384 raeburn 4751: if (eval{$unesc_val{'owner'} !~ /\Q$ownerunamefilter\E/i}) {
1.336 raeburn 4752: $match = 0;
4753: }
4754: }
4755: } elsif ($ownerdomfilter ne '') {
1.384 raeburn 4756: if ($unesc_val{'owner'} =~ /:/) {
4757: if (eval{$unesc_val{'owner'} !~ /^[^:]+:\Q$ownerdomfilter\E/}) {
1.336 raeburn 4758: $match = 0;
4759: }
4760: } else {
4761: if ($ownerdomfilter ne $udom) {
4762: $match = 0;
4763: }
4764: }
1.266 raeburn 4765: }
4766: }
1.384 raeburn 4767: if ($coursefilter ne '.') {
4768: if (eval{$unesc_key !~ /^$udom(_)\Q$coursefilter\E$/}) {
1.282 raeburn 4769: $match = 0;
4770: }
4771: }
1.384 raeburn 4772: if ($typefilter ne '.') {
4773: if (!$is_hash) {
4774: $unesc_val{'type'} = &unescape($val{'type'});
4775: }
4776: if ($unesc_val{'type'} eq '') {
1.333 raeburn 4777: if ($typefilter ne 'Course') {
4778: $match = 0;
4779: }
1.383 raeburn 4780: } else {
1.384 raeburn 4781: if (eval{$unesc_val{'type'} !~ /^\Q$typefilter\E$/}) {
1.333 raeburn 4782: $match = 0;
4783: }
4784: }
4785: }
1.266 raeburn 4786: if ($match == 1) {
1.384 raeburn 4787: if ($rtn_as_hash) {
4788: if ($is_hash) {
1.419 raeburn 4789: if ($valchange) {
4790: my $newvalue = &Apache::lonnet::freeze_escape($items);
4791: $qresult.=$key.'='.$newvalue.'&';
4792: } else {
4793: $qresult.=$key.'='.$value.'&';
4794: }
1.384 raeburn 4795: } else {
1.388 raeburn 4796: my %rtnhash = ( 'description' => &unescape($val{'descr'}),
4797: 'inst_code' => &unescape($val{'inst_code'}),
4798: 'owner' => &unescape($val{'owner'}),
4799: 'type' => &unescape($val{'type'}),
1.419 raeburn 4800: 'cloners' => &unescape($val{'cloners'}),
1.384 raeburn 4801: );
4802: my $items = &Apache::lonnet::freeze_escape(\%rtnhash);
4803: $qresult.=$key.'='.$items.'&';
4804: }
1.383 raeburn 4805: } else {
1.384 raeburn 4806: if ($is_hash) {
4807: $qresult .= $key.'='.&escape($unesc_val{'descr'}).':'.
4808: &escape($unesc_val{'inst_code'}).':'.
4809: &escape($unesc_val{'owner'}).'&';
4810: } else {
4811: $qresult .= $key.'='.$val{'descr'}.':'.$val{'inst_code'}.
4812: ':'.$val{'owner'}.'&';
4813: }
1.383 raeburn 4814: }
1.266 raeburn 4815: }
1.234 foxr 4816: }
1.311 albertel 4817: if (&untie_domain_hash($hashref)) {
1.234 foxr 4818: chop($qresult);
1.387 albertel 4819: &Reply($client, \$qresult, $userinput);
1.234 foxr 4820: } else {
4821: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4822: "while attempting courseiddump\n", $userinput);
4823: }
4824: } else {
4825: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
4826: "while attempting courseiddump\n", $userinput);
4827: }
4828: return 1;
4829: }
4830: ®ister_handler("courseiddump", \&dump_course_id_handler, 0, 1, 0);
1.238 foxr 4831:
1.438 raeburn 4832: sub course_lastaccess_handler {
4833: my ($cmd, $tail, $client) = @_;
4834: my $userinput = "$cmd:$tail";
4835: my ($cdom,$cnum) = split(':',$tail);
4836: my (%lastaccess,$qresult);
4837: my $hashref = &tie_domain_hash($cdom, "nohist_courseids", &GDBM_WRCREAT());
4838: if ($hashref) {
4839: while (my ($key,$value) = each(%$hashref)) {
4840: my ($unesc_key,$lasttime);
4841: $unesc_key = &unescape($key);
4842: if ($cnum) {
4843: next unless ($unesc_key =~ /\Q$cdom\E_\Q$cnum\E$/);
4844: }
4845: if ($unesc_key =~ /^lasttime:($LONCAPA::match_domain\_$LONCAPA::match_courseid)/) {
4846: $lastaccess{$1} = $value;
4847: } else {
4848: my $items = &Apache::lonnet::thaw_unescape($value);
4849: if (ref($items) eq 'HASH') {
4850: unless ($lastaccess{$unesc_key}) {
4851: $lastaccess{$unesc_key} = '';
4852: }
4853: } else {
4854: my @courseitems = split(':',$value);
4855: $lastaccess{$unesc_key} = pop(@courseitems);
4856: }
4857: }
4858: }
4859: foreach my $cid (sort(keys(%lastaccess))) {
4860: $qresult.=&escape($cid).'='.$lastaccess{$cid}.'&';
4861: }
4862: if (&untie_domain_hash($hashref)) {
4863: if ($qresult) {
4864: chop($qresult);
4865: }
4866: &Reply($client, \$qresult, $userinput);
4867: } else {
4868: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4869: "while attempting lastacourseaccess\n", $userinput);
4870: }
4871: } else {
4872: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
4873: "while attempting lastcourseaccess\n", $userinput);
4874: }
4875: return 1;
4876: }
4877: ®ister_handler("courselastaccess",\&course_lastaccess_handler, 0, 1, 0);
4878:
1.561 raeburn 4879: sub course_sessions_handler {
4880: my ($cmd, $tail, $client) = @_;
4881: my $userinput = "$cmd:$tail";
4882: my ($cdom,$cnum,$lastactivity) = split(':',$tail);
4883: my $dbsuffix = '_'.$cdom.'_'.$cnum.'.db';
4884: my (%sessions,$qresult);
4885: my $now=time;
4886: if (opendir(DIR,$perlvar{'lonIDsDir'})) {
4887: my $filename;
4888: while ($filename=readdir(DIR)) {
4889: next if ($filename=~/^\./);
4890: next if ($filename=~/^publicuser_/);
4891: next if ($filename=~/^[a-f0-9]+_(linked|lti_\d+)\.id$/);
1.562 raeburn 4892: if ($filename =~ /^($LONCAPA::match_username)_\d+_($LONCAPA::match_domain)_/) {
1.561 raeburn 4893: my ($uname,$udom) = ($1,$2);
1.562 raeburn 4894: next unless (-e "$perlvar{'lonDaemons'}/tmp/$uname$dbsuffix");
1.561 raeburn 4895: my $mtime = (stat("$perlvar{'lonIDsDir'}/$filename"))[9];
4896: if ($lastactivity < 0) {
1.563 raeburn 4897: next if ($mtime-$now > $lastactivity);
1.561 raeburn 4898: } else {
1.563 raeburn 4899: next if ($now-$mtime > $lastactivity);
1.561 raeburn 4900: }
4901: $sessions{$uname.':'.$udom} = $mtime;
4902: }
4903: }
4904: closedir(DIR);
4905: }
4906: foreach my $user (keys(%sessions)) {
4907: $qresult.=&escape($user).'='.$sessions{$user}.'&';
4908: }
4909: if ($qresult) {
4910: chop($qresult);
4911: }
4912: &Reply($client, \$qresult, $userinput);
4913: return 1;
4914: }
4915: ®ister_handler("coursesessions",\&course_sessions_handler, 0, 1, 0);
4916:
1.238 foxr 4917: #
1.348 raeburn 4918: # Puts an unencrypted entry in a namespace db file at the domain level
4919: #
4920: # Parameters:
4921: # $cmd - The command that got us here.
4922: # $tail - Tail of the command (remaining parameters).
4923: # $client - File descriptor connected to client.
4924: # Returns
4925: # 0 - Requested to exit, caller should shut down.
4926: # 1 - Continue processing.
4927: # Side effects:
4928: # reply is written to $client.
4929: #
4930: sub put_domain_handler {
4931: my ($cmd,$tail,$client) = @_;
4932:
4933: my $userinput = "$cmd:$tail";
4934:
4935: my ($udom,$namespace,$what) =split(/:/,$tail,3);
4936: chomp($what);
4937: my @pairs=split(/\&/,$what);
4938: my $hashref = &tie_domain_hash($udom, "$namespace", &GDBM_WRCREAT(),
4939: "P", $what);
4940: if ($hashref) {
4941: foreach my $pair (@pairs) {
4942: my ($key,$value)=split(/=/,$pair);
4943: $hashref->{$key}=$value;
4944: }
4945: if (&untie_domain_hash($hashref)) {
4946: &Reply($client, "ok\n", $userinput);
4947: } else {
4948: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4949: "while attempting putdom\n", $userinput);
4950: }
4951: } else {
4952: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
4953: "while attempting putdom\n", $userinput);
4954: }
4955:
4956: return 1;
4957: }
4958: ®ister_handler("putdom", \&put_domain_handler, 0, 1, 0);
4959:
1.517 raeburn 4960: # Updates one or more entries in clickers.db file at the domain level
4961: #
4962: # Parameters:
4963: # $cmd - The command that got us here.
4964: # $tail - Tail of the command (remaining parameters).
4965: # In this case a colon separated list containing:
4966: # (a) the domain for which we are updating the entries,
4967: # (b) the action required -- add or del -- and
4968: # (c) a &-separated list of entries to add or delete.
4969: # $client - File descriptor connected to client.
4970: # Returns
4971: # 1 - Continue processing.
4972: # 0 - Requested to exit, caller should shut down.
4973: # Side effects:
4974: # reply is written to $client.
4975: #
4976:
4977:
4978: sub update_clickers {
4979: my ($cmd, $tail, $client) = @_;
4980:
4981: my $userinput = "$cmd:$tail";
4982: my ($udom,$action,$what) =split(/:/,$tail,3);
4983: chomp($what);
4984:
4985: my $hashref = &tie_domain_hash($udom, "clickers", &GDBM_WRCREAT(),
4986: "U","$action:$what");
4987:
4988: if (!$hashref) {
4989: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
4990: "while attempting updateclickers\n", $userinput);
4991: return 1;
4992: }
4993:
4994: my @pairs=split(/\&/,$what);
4995: foreach my $pair (@pairs) {
4996: my ($key,$value)=split(/=/,$pair);
4997: if ($action eq 'add') {
4998: if (exists($hashref->{$key})) {
4999: my @newvals = split(/,/,&unescape($value));
5000: my @currvals = split(/,/,&unescape($hashref->{$key}));
5001: my @merged = sort(keys(%{{map { $_ => 1 } (@newvals,@currvals)}}));
5002: $hashref->{$key}=&escape(join(',',@merged));
5003: } else {
5004: $hashref->{$key}=$value;
5005: }
5006: } elsif ($action eq 'del') {
5007: if (exists($hashref->{$key})) {
5008: my %current;
5009: map { $current{$_} = 1; } split(/,/,&unescape($hashref->{$key}));
5010: map { delete($current{$_}); } split(/,/,&unescape($value));
5011: if (keys(%current)) {
5012: $hashref->{$key}=&escape(join(',',sort(keys(%current))));
5013: } else {
5014: delete($hashref->{$key});
5015: }
5016: }
5017: }
5018: }
5019: if (&untie_user_hash($hashref)) {
5020: &Reply( $client, "ok\n", $userinput);
5021: } else {
5022: &Failure($client, "error: ".($!+0)." untie(GDBM) failed ".
5023: "while attempting put\n",
5024: $userinput);
5025: }
5026: return 1;
5027: }
5028: ®ister_handler("updateclickers", \&update_clickers, 0, 1, 0);
5029:
5030:
5031: # Deletes one or more entries in a namespace db file at the domain level
5032: #
5033: # Parameters:
5034: # $cmd - The command that got us here.
5035: # $tail - Tail of the command (remaining parameters).
5036: # In this case a colon separated list containing:
5037: # (a) the domain for which we are deleting the entries,
5038: # (b) &-separated list of keys to delete.
5039: # $client - File descriptor connected to client.
5040: # Returns
5041: # 1 - Continue processing.
5042: # 0 - Requested to exit, caller should shut down.
5043: # Side effects:
5044: # reply is written to $client.
5045: #
5046:
5047: sub del_domain_handler {
5048: my ($cmd,$tail,$client) = @_;
5049:
5050: my $userinput = "$cmd:$tail";
5051:
5052: my ($udom,$namespace,$what)=split(/:/,$tail,3);
5053: chomp($what);
5054: my $hashref = &tie_domain_hash($udom,$namespace,&GDBM_WRCREAT(),
5055: "D", $what);
5056: if ($hashref) {
5057: my @keys=split(/\&/,$what);
5058: foreach my $key (@keys) {
5059: delete($hashref->{$key});
5060: }
5061: if (&untie_user_hash($hashref)) {
5062: &Reply($client, "ok\n", $userinput);
5063: } else {
5064: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
5065: "while attempting deldom\n", $userinput);
5066: }
5067: } else {
5068: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
5069: "while attempting deldom\n", $userinput);
5070: }
5071: return 1;
5072: }
5073: ®ister_handler("deldom", \&del_domain_handler, 0, 1, 0);
5074:
5075:
1.348 raeburn 5076: # Unencrypted get from the namespace database file at the domain level.
5077: # This function retrieves a keyed item from a specific named database in the
5078: # domain directory.
5079: #
5080: # Parameters:
1.565 raeburn 5081: # $cmd - Command request keyword (getdom).
1.348 raeburn 5082: # $tail - Tail of the command. This is a colon separated list
5083: # consisting of the domain and the 'namespace'
5084: # which selects the gdbm file to do the lookup in,
5085: # & separated list of keys to lookup. Note that
5086: # the values are returned as an & separated list too.
5087: # $client - File descriptor open on the client.
5088: # Returns:
5089: # 1 - Continue processing.
5090: # 0 - Exit.
5091: # Side effects:
5092: # reply is written to $client.
5093: #
5094:
5095: sub get_domain_handler {
5096: my ($cmd, $tail, $client) = @_;
5097:
1.536 raeburn 5098: my $userinput = "$cmd:$tail";
5099:
5100: my ($udom,$namespace,$what)=split(/:/,$tail,3);
5101: if ($namespace =~ /^enc/) {
5102: &Failure( $client, "refused\n", $userinput);
5103: } else {
1.565 raeburn 5104: my $res = LONCAPA::Lond::get_dom($userinput);
5105: if ($res =~ /^error:/) {
5106: &Failure($client, \$res, $userinput);
1.536 raeburn 5107: } else {
1.565 raeburn 5108: &Reply($client, \$res, $userinput);
1.536 raeburn 5109: }
5110: }
5111:
5112: return 1;
5113: }
5114: ®ister_handler("getdom", \&get_domain_handler, 0, 1, 0);
5115:
5116: sub encrypted_get_domain_handler {
5117: my ($cmd, $tail, $client) = @_;
5118:
5119: my $userinput = "$cmd:$tail";
1.348 raeburn 5120:
1.565 raeburn 5121: my $res = LONCAPA::Lond::get_dom($userinput);
5122: if ($res =~ /^error:/) {
5123: &Failure($client, \$res, $userinput);
5124: } else {
5125: if ($cipher) {
5126: my $cmdlength=length($res);
5127: $res.=" ";
5128: my $encres='';
5129: for (my $encidx=0;$encidx<=$cmdlength;$encidx+=8) {
5130: $encres.= unpack("H16",
5131: $cipher->encrypt(substr($res,
5132: $encidx,
5133: 8)));
1.536 raeburn 5134: }
1.565 raeburn 5135: &Reply( $client,"enc:$cmdlength:$encres\n",$userinput);
1.348 raeburn 5136: } else {
1.565 raeburn 5137: &Failure( $client, "error:no_key\n",$userinput);
1.348 raeburn 5138: }
5139: }
5140: return 1;
5141: }
1.536 raeburn 5142: ®ister_handler("egetdom", \&encrypted_get_domain_handler, 1, 1, 0);
1.348 raeburn 5143:
1.420 raeburn 5144: #
1.238 foxr 5145: # Puts an id to a domains id database.
5146: #
5147: # Parameters:
5148: # $cmd - The command that triggered us.
5149: # $tail - Remainder of the request other than the command. This is a
5150: # colon separated list containing:
5151: # $domain - The domain for which we are writing the id.
5152: # $pairs - The id info to write... this is and & separated list
5153: # of keyword=value.
5154: # $client - Socket open on the client.
5155: # Returns:
5156: # 1 - Continue processing.
5157: # Side effects:
5158: # reply is written to $client.
5159: #
5160: sub put_id_handler {
5161: my ($cmd,$tail,$client) = @_;
5162:
5163:
5164: my $userinput = "$cmd:$tail";
5165:
5166: my ($udom,$what)=split(/:/,$tail);
5167: chomp($what);
5168: my @pairs=split(/\&/,$what);
5169: my $hashref = &tie_domain_hash($udom, "ids", &GDBM_WRCREAT(),
5170: "P", $what);
5171: if ($hashref) {
5172: foreach my $pair (@pairs) {
5173: my ($key,$value)=split(/=/,$pair);
5174: $hashref->{$key}=$value;
5175: }
1.311 albertel 5176: if (&untie_domain_hash($hashref)) {
1.238 foxr 5177: &Reply($client, "ok\n", $userinput);
5178: } else {
5179: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
5180: "while attempting idput\n", $userinput);
5181: }
5182: } else {
5183: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
5184: "while attempting idput\n", $userinput);
5185: }
5186:
5187: return 1;
5188: }
1.263 albertel 5189: ®ister_handler("idput", \&put_id_handler, 0, 1, 0);
1.238 foxr 5190:
5191: #
5192: # Retrieves a set of id values from the id database.
5193: # Returns an & separated list of results, one for each requested id to the
5194: # client.
5195: #
5196: # Parameters:
5197: # $cmd - Command keyword that caused us to be dispatched.
5198: # $tail - Tail of the command. Consists of a colon separated:
5199: # domain - the domain whose id table we dump
5200: # ids Consists of an & separated list of
5201: # id keywords whose values will be fetched.
5202: # nonexisting keywords will have an empty value.
5203: # $client - Socket open on the client.
5204: #
5205: # Returns:
5206: # 1 - indicating processing should continue.
5207: # Side effects:
5208: # An & separated list of results is written to $client.
5209: #
5210: sub get_id_handler {
5211: my ($cmd, $tail, $client) = @_;
5212:
5213:
5214: my $userinput = "$client:$tail";
5215:
5216: my ($udom,$what)=split(/:/,$tail);
5217: chomp($what);
5218: my @queries=split(/\&/,$what);
5219: my $qresult='';
5220: my $hashref = &tie_domain_hash($udom, "ids", &GDBM_READER());
5221: if ($hashref) {
5222: for (my $i=0;$i<=$#queries;$i++) {
5223: $qresult.="$hashref->{$queries[$i]}&";
5224: }
1.311 albertel 5225: if (&untie_domain_hash($hashref)) {
1.238 foxr 5226: $qresult=~s/\&$//;
1.387 albertel 5227: &Reply($client, \$qresult, $userinput);
1.238 foxr 5228: } else {
5229: &Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ".
5230: "while attempting idget\n",$userinput);
5231: }
5232: } else {
5233: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
5234: "while attempting idget\n",$userinput);
5235: }
5236:
5237: return 1;
5238: }
1.263 albertel 5239: ®ister_handler("idget", \&get_id_handler, 0, 1, 0);
1.238 foxr 5240:
1.501 raeburn 5241: # Deletes one or more ids in a domain's id database.
5242: #
5243: # Parameters:
5244: # $cmd - Command keyword (iddel).
5245: # $tail - Command tail. In this case a colon
5246: # separated list containing:
5247: # The domain for which we are deleting the id(s).
5248: # &-separated list of id(s) to delete.
5249: # $client - File open on client socket.
5250: # Returns:
5251: # 1 - Continue processing
5252: # 0 - Exit server.
5253: #
5254: #
5255:
5256: sub del_id_handler {
5257: my ($cmd,$tail,$client) = @_;
5258:
5259: my $userinput = "$cmd:$tail";
5260:
5261: my ($udom,$what)=split(/:/,$tail);
5262: chomp($what);
5263: my $hashref = &tie_domain_hash($udom, "ids", &GDBM_WRCREAT(),
5264: "D", $what);
5265: if ($hashref) {
5266: my @keys=split(/\&/,$what);
5267: foreach my $key (@keys) {
5268: delete($hashref->{$key});
5269: }
5270: if (&untie_user_hash($hashref)) {
5271: &Reply($client, "ok\n", $userinput);
5272: } else {
5273: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
5274: "while attempting iddel\n", $userinput);
5275: }
5276: } else {
5277: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
5278: "while attempting iddel\n", $userinput);
5279: }
5280: return 1;
5281: }
5282: ®ister_handler("iddel", \&del_id_handler, 0, 1, 0);
5283:
1.238 foxr 5284: #
1.299 raeburn 5285: # Puts broadcast e-mail sent by Domain Coordinator in nohist_dcmail database
5286: #
5287: # Parameters
5288: # $cmd - Command keyword that caused us to be dispatched.
5289: # $tail - Tail of the command. Consists of a colon separated:
5290: # domain - the domain whose dcmail we are recording
5291: # email Consists of key=value pair
5292: # where key is unique msgid
5293: # and value is message (in XML)
5294: # $client - Socket open on the client.
5295: #
5296: # Returns:
5297: # 1 - indicating processing should continue.
5298: # Side effects
5299: # reply is written to $client.
5300: #
5301: sub put_dcmail_handler {
5302: my ($cmd,$tail,$client) = @_;
5303: my $userinput = "$cmd:$tail";
1.463 foxr 5304:
5305:
1.299 raeburn 5306: my ($udom,$what)=split(/:/,$tail);
5307: chomp($what);
5308: my $hashref = &tie_domain_hash($udom, "nohist_dcmail", &GDBM_WRCREAT());
5309: if ($hashref) {
5310: my ($key,$value)=split(/=/,$what);
5311: $hashref->{$key}=$value;
5312: }
1.311 albertel 5313: if (&untie_domain_hash($hashref)) {
1.299 raeburn 5314: &Reply($client, "ok\n", $userinput);
5315: } else {
5316: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
5317: "while attempting dcmailput\n", $userinput);
5318: }
5319: return 1;
5320: }
5321: ®ister_handler("dcmailput", \&put_dcmail_handler, 0, 1, 0);
5322:
5323: #
5324: # Retrieves broadcast e-mail from nohist_dcmail database
5325: # Returns to client an & separated list of key=value pairs,
5326: # where key is msgid and value is message information.
5327: #
5328: # Parameters
5329: # $cmd - Command keyword that caused us to be dispatched.
5330: # $tail - Tail of the command. Consists of a colon separated:
5331: # domain - the domain whose dcmail table we dump
5332: # startfilter - beginning of time window
5333: # endfilter - end of time window
5334: # sendersfilter - & separated list of username:domain
5335: # for senders to search for.
5336: # $client - Socket open on the client.
5337: #
5338: # Returns:
5339: # 1 - indicating processing should continue.
5340: # Side effects
5341: # reply (& separated list of msgid=messageinfo pairs) is
5342: # written to $client.
5343: #
5344: sub dump_dcmail_handler {
5345: my ($cmd, $tail, $client) = @_;
5346:
5347: my $userinput = "$cmd:$tail";
5348: my ($udom,$startfilter,$endfilter,$sendersfilter) = split(/:/,$tail);
5349: chomp($sendersfilter);
5350: my @senders = ();
5351: if (defined($startfilter)) {
5352: $startfilter=&unescape($startfilter);
5353: } else {
5354: $startfilter='.';
5355: }
5356: if (defined($endfilter)) {
5357: $endfilter=&unescape($endfilter);
5358: } else {
5359: $endfilter='.';
5360: }
5361: if (defined($sendersfilter)) {
5362: $sendersfilter=&unescape($sendersfilter);
1.300 albertel 5363: @senders = map { &unescape($_) } split(/\&/,$sendersfilter);
1.299 raeburn 5364: }
5365:
5366: my $qresult='';
5367: my $hashref = &tie_domain_hash($udom, "nohist_dcmail", &GDBM_WRCREAT());
5368: if ($hashref) {
5369: while (my ($key,$value) = each(%$hashref)) {
5370: my $match = 1;
1.303 albertel 5371: my ($timestamp,$subj,$uname,$udom) =
5372: split(/:/,&unescape(&unescape($key)),5); # yes, twice really
1.299 raeburn 5373: $subj = &unescape($subj);
5374: unless ($startfilter eq '.' || !defined($startfilter)) {
5375: if ($timestamp < $startfilter) {
5376: $match = 0;
5377: }
5378: }
5379: unless ($endfilter eq '.' || !defined($endfilter)) {
5380: if ($timestamp > $endfilter) {
5381: $match = 0;
5382: }
5383: }
5384: unless (@senders < 1) {
5385: unless (grep/^$uname:$udom$/,@senders) {
5386: $match = 0;
5387: }
5388: }
5389: if ($match == 1) {
5390: $qresult.=$key.'='.$value.'&';
5391: }
5392: }
1.311 albertel 5393: if (&untie_domain_hash($hashref)) {
1.299 raeburn 5394: chop($qresult);
1.387 albertel 5395: &Reply($client, \$qresult, $userinput);
1.299 raeburn 5396: } else {
5397: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
5398: "while attempting dcmaildump\n", $userinput);
5399: }
5400: } else {
5401: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
5402: "while attempting dcmaildump\n", $userinput);
5403: }
5404: return 1;
5405: }
5406:
5407: ®ister_handler("dcmaildump", \&dump_dcmail_handler, 0, 1, 0);
5408:
5409: #
5410: # Puts domain roles in nohist_domainroles database
5411: #
5412: # Parameters
5413: # $cmd - Command keyword that caused us to be dispatched.
5414: # $tail - Tail of the command. Consists of a colon separated:
5415: # domain - the domain whose roles we are recording
5416: # role - Consists of key=value pair
5417: # where key is unique role
5418: # and value is start/end date information
5419: # $client - Socket open on the client.
5420: #
5421: # Returns:
5422: # 1 - indicating processing should continue.
5423: # Side effects
5424: # reply is written to $client.
5425: #
5426:
5427: sub put_domainroles_handler {
5428: my ($cmd,$tail,$client) = @_;
5429:
5430: my $userinput = "$cmd:$tail";
5431: my ($udom,$what)=split(/:/,$tail);
5432: chomp($what);
5433: my @pairs=split(/\&/,$what);
5434: my $hashref = &tie_domain_hash($udom, "nohist_domainroles", &GDBM_WRCREAT());
5435: if ($hashref) {
5436: foreach my $pair (@pairs) {
5437: my ($key,$value)=split(/=/,$pair);
5438: $hashref->{$key}=$value;
5439: }
1.311 albertel 5440: if (&untie_domain_hash($hashref)) {
1.299 raeburn 5441: &Reply($client, "ok\n", $userinput);
5442: } else {
5443: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
5444: "while attempting domroleput\n", $userinput);
5445: }
5446: } else {
5447: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
5448: "while attempting domroleput\n", $userinput);
5449: }
5450:
5451: return 1;
5452: }
5453:
5454: ®ister_handler("domroleput", \&put_domainroles_handler, 0, 1, 0);
5455:
5456: #
5457: # Retrieves domain roles from nohist_domainroles database
5458: # Returns to client an & separated list of key=value pairs,
5459: # where key is role and value is start and end date information.
5460: #
5461: # Parameters
5462: # $cmd - Command keyword that caused us to be dispatched.
5463: # $tail - Tail of the command. Consists of a colon separated:
5464: # domain - the domain whose domain roles table we dump
5465: # $client - Socket open on the client.
5466: #
5467: # Returns:
5468: # 1 - indicating processing should continue.
5469: # Side effects
5470: # reply (& separated list of role=start/end info pairs) is
5471: # written to $client.
5472: #
5473: sub dump_domainroles_handler {
5474: my ($cmd, $tail, $client) = @_;
5475:
5476: my $userinput = "$cmd:$tail";
5477: my ($udom,$startfilter,$endfilter,$rolesfilter) = split(/:/,$tail);
5478: chomp($rolesfilter);
5479: my @roles = ();
5480: if (defined($startfilter)) {
5481: $startfilter=&unescape($startfilter);
5482: } else {
5483: $startfilter='.';
5484: }
5485: if (defined($endfilter)) {
5486: $endfilter=&unescape($endfilter);
5487: } else {
5488: $endfilter='.';
5489: }
5490: if (defined($rolesfilter)) {
5491: $rolesfilter=&unescape($rolesfilter);
1.300 albertel 5492: @roles = split(/\&/,$rolesfilter);
1.299 raeburn 5493: }
1.421 raeburn 5494:
1.299 raeburn 5495: my $hashref = &tie_domain_hash($udom, "nohist_domainroles", &GDBM_WRCREAT());
5496: if ($hashref) {
5497: my $qresult = '';
5498: while (my ($key,$value) = each(%$hashref)) {
5499: my $match = 1;
1.421 raeburn 5500: my ($end,$start) = split(/:/,&unescape($value));
1.299 raeburn 5501: my ($trole,$uname,$udom,$runame,$rudom,$rsec) = split(/:/,&unescape($key));
1.421 raeburn 5502: unless (@roles < 1) {
5503: unless (grep/^\Q$trole\E$/,@roles) {
5504: $match = 0;
5505: next;
5506: }
5507: }
1.299 raeburn 5508: unless ($startfilter eq '.' || !defined($startfilter)) {
1.415 raeburn 5509: if ((defined($start)) && ($start >= $startfilter)) {
1.299 raeburn 5510: $match = 0;
1.421 raeburn 5511: next;
1.299 raeburn 5512: }
5513: }
5514: unless ($endfilter eq '.' || !defined($endfilter)) {
1.421 raeburn 5515: if ((defined($end)) && (($end > 0) && ($end <= $endfilter))) {
1.299 raeburn 5516: $match = 0;
1.421 raeburn 5517: next;
1.299 raeburn 5518: }
5519: }
5520: if ($match == 1) {
5521: $qresult.=$key.'='.$value.'&';
5522: }
5523: }
1.311 albertel 5524: if (&untie_domain_hash($hashref)) {
1.299 raeburn 5525: chop($qresult);
1.387 albertel 5526: &Reply($client, \$qresult, $userinput);
1.299 raeburn 5527: } else {
5528: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
5529: "while attempting domrolesdump\n", $userinput);
5530: }
5531: } else {
5532: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
5533: "while attempting domrolesdump\n", $userinput);
5534: }
5535: return 1;
5536: }
5537:
5538: ®ister_handler("domrolesdump", \&dump_domainroles_handler, 0, 1, 0);
5539:
5540:
1.238 foxr 5541: # Process the tmpput command I'm not sure what this does.. Seems to
5542: # create a file in the lonDaemons/tmp directory of the form $id.tmp
5543: # where Id is the client's ip concatenated with a sequence number.
5544: # The file will contain some value that is passed in. Is this e.g.
5545: # a login token?
5546: #
5547: # Parameters:
5548: # $cmd - The command that got us dispatched.
5549: # $tail - The remainder of the request following $cmd:
5550: # In this case this will be the contents of the file.
5551: # $client - Socket connected to the client.
5552: # Returns:
5553: # 1 indicating processing can continue.
5554: # Side effects:
5555: # A file is created in the local filesystem.
5556: # A reply is sent to the client.
5557: sub tmp_put_handler {
5558: my ($cmd, $what, $client) = @_;
5559:
5560: my $userinput = "$cmd:$what"; # Reconstruct for logging.
5561:
1.347 raeburn 5562: my ($record,$context) = split(/:/,$what);
5563: if ($context ne '') {
5564: chomp($context);
5565: $context = &unescape($context);
5566: }
5567: my ($id,$store);
1.238 foxr 5568: $tmpsnum++;
1.454 raeburn 5569: if (($context eq 'resetpw') || ($context eq 'createaccount')) {
1.347 raeburn 5570: $id = &md5_hex(&md5_hex(time.{}.rand().$$));
5571: } else {
5572: $id = $$.'_'.$clientip.'_'.$tmpsnum;
5573: }
1.238 foxr 5574: $id=~s/\W/\_/g;
1.347 raeburn 5575: $record=~s/\n//g;
1.238 foxr 5576: my $execdir=$perlvar{'lonDaemons'};
5577: if ($store=IO::File->new(">$execdir/tmp/$id.tmp")) {
1.347 raeburn 5578: print $store $record;
1.238 foxr 5579: close $store;
1.387 albertel 5580: &Reply($client, \$id, $userinput);
1.238 foxr 5581: } else {
5582: &Failure( $client, "error: ".($!+0)."IO::File->new Failed ".
5583: "while attempting tmpput\n", $userinput);
5584: }
5585: return 1;
5586:
5587: }
5588: ®ister_handler("tmpput", \&tmp_put_handler, 0, 1, 0);
1.263 albertel 5589:
1.238 foxr 5590: # Processes the tmpget command. This command returns the contents
5591: # of a temporary resource file(?) created via tmpput.
5592: #
5593: # Paramters:
5594: # $cmd - Command that got us dispatched.
5595: # $id - Tail of the command, contain the id of the resource
5596: # we want to fetch.
5597: # $client - socket open on the client.
5598: # Return:
5599: # 1 - Inidcating processing can continue.
5600: # Side effects:
5601: # A reply is sent to the client.
5602: #
5603: sub tmp_get_handler {
5604: my ($cmd, $id, $client) = @_;
5605:
5606: my $userinput = "$cmd:$id";
5607:
5608:
5609: $id=~s/\W/\_/g;
5610: my $store;
5611: my $execdir=$perlvar{'lonDaemons'};
5612: if ($store=IO::File->new("$execdir/tmp/$id.tmp")) {
5613: my $reply=<$store>;
1.387 albertel 5614: &Reply( $client, \$reply, $userinput);
1.238 foxr 5615: close $store;
5616: } else {
5617: &Failure( $client, "error: ".($!+0)."IO::File->new Failed ".
5618: "while attempting tmpget\n", $userinput);
5619: }
5620:
5621: return 1;
5622: }
5623: ®ister_handler("tmpget", \&tmp_get_handler, 0, 1, 0);
1.263 albertel 5624:
1.238 foxr 5625: #
5626: # Process the tmpdel command. This command deletes a temp resource
5627: # created by the tmpput command.
5628: #
5629: # Parameters:
5630: # $cmd - Command that got us here.
5631: # $id - Id of the temporary resource created.
5632: # $client - socket open on the client process.
5633: #
5634: # Returns:
5635: # 1 - Indicating processing should continue.
5636: # Side Effects:
5637: # A file is deleted
5638: # A reply is sent to the client.
5639: sub tmp_del_handler {
5640: my ($cmd, $id, $client) = @_;
5641:
5642: my $userinput= "$cmd:$id";
5643:
5644: chomp($id);
5645: $id=~s/\W/\_/g;
5646: my $execdir=$perlvar{'lonDaemons'};
5647: if (unlink("$execdir/tmp/$id.tmp")) {
5648: &Reply($client, "ok\n", $userinput);
5649: } else {
5650: &Failure( $client, "error: ".($!+0)."Unlink tmp Failed ".
5651: "while attempting tmpdel\n", $userinput);
5652: }
5653:
5654: return 1;
5655:
5656: }
5657: ®ister_handler("tmpdel", \&tmp_del_handler, 0, 1, 0);
1.263 albertel 5658:
1.238 foxr 5659: #
1.564 raeburn 5660: # Process the updatebalcookie command. This command updates a
5661: # cookie in the lonBalancedir directory on a load balancer node.
5662: #
5663: # Parameters:
5664: # $cmd - Command that got us here.
5665: # $tail - Tail of the request (escaped cookie: escaped current entry)
5666: #
5667: # $client - socket open on the client process.
5668: #
5669: # Returns:
5670: # 1 - Indicating processing should continue.
5671: # Side Effects:
5672: # A cookie file is updated from the lonBalancedir directory
5673: # A reply is sent to the client.
5674: #
5675: sub update_balcookie_handler {
5676: my ($cmd, $tail, $client) = @_;
5677:
5678: my $userinput= "$cmd:$tail";
5679: chomp($tail);
5680: my ($cookie,$lastentry) = map { &unescape($_) } (split(/:/,$tail));
5681:
5682: my $updatedone;
5683: if ($cookie =~ /^$LONCAPA::match_domain\_$LONCAPA::match_username\_[a-f0-9]{32}$/) {
5684: my $execdir=$perlvar{'lonBalanceDir'};
5685: if (-e "$execdir/$cookie.id") {
5686: my $doupdate;
5687: if (open(my $fh,'<',"$execdir/$cookie.id")) {
5688: while (my $line = <$fh>) {
5689: chomp($line);
5690: if ($line eq $lastentry) {
5691: $doupdate = 1;
5692: last;
5693: }
5694: }
5695: close($fh);
5696: }
5697: if ($doupdate) {
5698: if (open(my $fh,'>',"$execdir/$cookie.id")) {
5699: print $fh $clientname;
5700: close($fh);
5701: $updatedone = 1;
5702: }
5703: }
5704: }
5705: }
5706: if ($updatedone) {
5707: &Reply($client, "ok\n", $userinput);
5708: } else {
5709: &Failure( $client, "error: ".($!+0)."file update failed ".
5710: "while attempting updatebalcookie\n", $userinput);
5711: }
5712: return 1;
5713: }
5714: ®ister_handler("updatebalcookie", \&update_balcookie_handler, 0, 1, 0);
5715:
5716: #
1.551 raeburn 5717: # Process the delbalcookie command. This command deletes a balancer
1.564 raeburn 5718: # cookie in the lonBalancedir directory on a load balancer node.
1.551 raeburn 5719: #
5720: # Parameters:
5721: # $cmd - Command that got us here.
5722: # $cookie - Cookie to be deleted.
5723: # $client - socket open on the client process.
5724: #
5725: # Returns:
5726: # 1 - Indicating processing should continue.
5727: # Side Effects:
5728: # A cookie file is deleted from the lonBalancedir directory
5729: # A reply is sent to the client.
5730: sub del_balcookie_handler {
5731: my ($cmd, $cookie, $client) = @_;
5732:
5733: my $userinput= "$cmd:$cookie";
5734:
5735: chomp($cookie);
1.564 raeburn 5736: $cookie = &unescape($cookie);
1.551 raeburn 5737: my $deleted = '';
5738: if ($cookie =~ /^$LONCAPA::match_domain\_$LONCAPA::match_username\_[a-f0-9]{32}$/) {
5739: my $execdir=$perlvar{'lonBalanceDir'};
5740: if (-e "$execdir/$cookie.id") {
5741: if (open(my $fh,'<',"$execdir/$cookie.id")) {
5742: my $dodelete;
5743: while (my $line = <$fh>) {
5744: chomp($line);
5745: if ($line eq $clientname) {
5746: $dodelete = 1;
1.554 raeburn 5747: last;
1.551 raeburn 5748: }
5749: }
1.554 raeburn 5750: close($fh);
1.551 raeburn 5751: if ($dodelete) {
5752: if (unlink("$execdir/$cookie.id")) {
5753: $deleted = 1;
5754: }
5755: }
5756: }
5757: }
5758: }
5759: if ($deleted) {
5760: &Reply($client, "ok\n", $userinput);
5761: } else {
5762: &Failure( $client, "error: ".($!+0)."Unlinking cookie file Failed ".
5763: "while attempting delbalcookie\n", $userinput);
5764: }
5765: return 1;
5766: }
5767: ®ister_handler("delbalcookie", \&del_balcookie_handler, 0, 1, 0);
5768:
5769: #
1.246 foxr 5770: # Processes the setannounce command. This command
5771: # creates a file named announce.txt in the top directory of
5772: # the documentn root and sets its contents. The announce.txt file is
5773: # printed in its entirety at the LonCAPA login page. Note:
5774: # once the announcement.txt fileis created it cannot be deleted.
5775: # However, setting the contents of the file to empty removes the
5776: # announcement from the login page of loncapa so who cares.
5777: #
5778: # Parameters:
5779: # $cmd - The command that got us dispatched.
5780: # $announcement - The text of the announcement.
5781: # $client - Socket open on the client process.
5782: # Retunrns:
5783: # 1 - Indicating request processing should continue
5784: # Side Effects:
5785: # The file {DocRoot}/announcement.txt is created.
5786: # A reply is sent to $client.
5787: #
5788: sub set_announce_handler {
5789: my ($cmd, $announcement, $client) = @_;
5790:
5791: my $userinput = "$cmd:$announcement";
5792:
5793: chomp($announcement);
5794: $announcement=&unescape($announcement);
5795: if (my $store=IO::File->new('>'.$perlvar{'lonDocRoot'}.
5796: '/announcement.txt')) {
5797: print $store $announcement;
5798: close $store;
5799: &Reply($client, "ok\n", $userinput);
5800: } else {
5801: &Failure($client, "error: ".($!+0)."\n", $userinput);
5802: }
5803:
5804: return 1;
5805: }
5806: ®ister_handler("setannounce", \&set_announce_handler, 0, 1, 0);
1.263 albertel 5807:
1.246 foxr 5808: #
5809: # Return the version of the daemon. This can be used to determine
5810: # the compatibility of cross version installations or, alternatively to
5811: # simply know who's out of date and who isn't. Note that the version
5812: # is returned concatenated with the tail.
5813: # Parameters:
5814: # $cmd - the request that dispatched to us.
5815: # $tail - Tail of the request (client's version?).
5816: # $client - Socket open on the client.
5817: #Returns:
5818: # 1 - continue processing requests.
5819: # Side Effects:
5820: # Replies with version to $client.
5821: sub get_version_handler {
5822: my ($cmd, $tail, $client) = @_;
5823:
5824: my $userinput = $cmd.$tail;
5825:
5826: &Reply($client, &version($userinput)."\n", $userinput);
5827:
5828:
5829: return 1;
5830: }
5831: ®ister_handler("version", \&get_version_handler, 0, 1, 0);
1.263 albertel 5832:
1.246 foxr 5833: # Set the current host and domain. This is used to support
5834: # multihomed systems. Each IP of the system, or even separate daemons
5835: # on the same IP can be treated as handling a separate lonCAPA virtual
5836: # machine. This command selects the virtual lonCAPA. The client always
5837: # knows the right one since it is lonc and it is selecting the domain/system
5838: # from the hosts.tab file.
5839: # Parameters:
5840: # $cmd - Command that dispatched us.
5841: # $tail - Tail of the command (domain/host requested).
5842: # $socket - Socket open on the client.
5843: #
5844: # Returns:
5845: # 1 - Indicates the program should continue to process requests.
5846: # Side-effects:
5847: # The default domain/system context is modified for this daemon.
5848: # a reply is sent to the client.
5849: #
5850: sub set_virtual_host_handler {
5851: my ($cmd, $tail, $socket) = @_;
5852:
5853: my $userinput ="$cmd:$tail";
5854:
5855: &Reply($client, &sethost($userinput)."\n", $userinput);
5856:
5857:
5858: return 1;
5859: }
1.247 albertel 5860: ®ister_handler("sethost", \&set_virtual_host_handler, 0, 1, 0);
1.246 foxr 5861:
5862: # Process a request to exit:
5863: # - "bye" is sent to the client.
5864: # - The client socket is shutdown and closed.
5865: # - We indicate to the caller that we should exit.
5866: # Formal Parameters:
5867: # $cmd - The command that got us here.
5868: # $tail - Tail of the command (empty).
5869: # $client - Socket open on the tail.
5870: # Returns:
5871: # 0 - Indicating the program should exit!!
5872: #
5873: sub exit_handler {
5874: my ($cmd, $tail, $client) = @_;
5875:
5876: my $userinput = "$cmd:$tail";
5877:
5878: &logthis("Client $clientip ($clientname) hanging up: $userinput");
5879: &Reply($client, "bye\n", $userinput);
5880: $client->shutdown(2); # shutdown the socket forcibly.
5881: $client->close();
5882:
5883: return 0;
5884: }
1.248 foxr 5885: ®ister_handler("exit", \&exit_handler, 0,1,1);
5886: ®ister_handler("init", \&exit_handler, 0,1,1);
5887: ®ister_handler("quit", \&exit_handler, 0,1,1);
5888:
5889: # Determine if auto-enrollment is enabled.
5890: # Note that the original had what I believe to be a defect.
5891: # The original returned 0 if the requestor was not a registerd client.
5892: # It should return "refused".
5893: # Formal Parameters:
5894: # $cmd - The command that invoked us.
5895: # $tail - The tail of the command (Extra command parameters.
5896: # $client - The socket open on the client that issued the request.
5897: # Returns:
5898: # 1 - Indicating processing should continue.
5899: #
5900: sub enrollment_enabled_handler {
5901: my ($cmd, $tail, $client) = @_;
5902: my $userinput = $cmd.":".$tail; # For logging purposes.
5903:
5904:
1.337 albertel 5905: my ($cdom) = split(/:/, $tail, 2); # Domain we're asking about.
5906:
1.248 foxr 5907: my $outcome = &localenroll::run($cdom);
1.387 albertel 5908: &Reply($client, \$outcome, $userinput);
1.248 foxr 5909:
5910: return 1;
5911: }
5912: ®ister_handler("autorun", \&enrollment_enabled_handler, 0, 1, 0);
5913:
1.417 raeburn 5914: #
1.423 raeburn 5915: # Validate an institutional code used for a LON-CAPA course.
1.417 raeburn 5916: #
5917: # Formal Parameters:
5918: # $cmd - The command request that got us dispatched.
5919: # $tail - The tail of the command. In this case,
5920: # this is a colon separated set of words that will be split
5921: # into:
1.424 raeburn 5922: # $dom - The domain for which the check of
5923: # institutional course code will occur.
5924: #
5925: # $instcode - The institutional code for the course
5926: # being requested, or validated for rights
5927: # to request.
5928: #
5929: # $owner - The course requestor (who will be the
5930: # course owner, in the form username:domain
5931: #
1.417 raeburn 5932: # $client - Socket open on the client.
5933: # Returns:
5934: # 1 - Indicating processing should continue.
5935: #
5936: sub validate_instcode_handler {
5937: my ($cmd, $tail, $client) = @_;
5938: my $userinput = "$cmd:$tail";
1.423 raeburn 5939: my ($dom,$instcode,$owner) = split(/:/, $tail);
1.422 raeburn 5940: $instcode = &unescape($instcode);
5941: $owner = &unescape($owner);
1.498 raeburn 5942: my ($outcome,$description,$credits) =
1.426 raeburn 5943: &localenroll::validate_instcode($dom,$instcode,$owner);
1.498 raeburn 5944: my $result = &escape($outcome).'&'.&escape($description).'&'.
5945: &escape($credits);
1.426 raeburn 5946: &Reply($client, \$result, $userinput);
1.417 raeburn 5947:
5948: return 1;
5949: }
5950: ®ister_handler("autovalidateinstcode", \&validate_instcode_handler, 0, 1, 0);
5951:
1.566 ! raeburn 5952: #
! 5953: # Validate co-owner for cross-listed institutional code and
! 5954: # institutional course code itself used for a LON-CAPA course.
! 5955: #
! 5956: # Formal Parameters:
! 5957: # $cmd - The command request that got us dispatched.
! 5958: # $tail - The tail of the command. In this case,
! 5959: # this is a colon separated string containing:
! 5960: # $dom - Course's LON-CAPA domain
! 5961: # $instcode - Institutional course code for the course
! 5962: # $inst_xlist - Institutional course Id for the crosslisting
! 5963: # $coowner - Username of co-owner
! 5964: # (values for all but $dom have been escaped).
! 5965: #
! 5966: # $client - Socket open on the client.
! 5967: # Returns:
! 5968: # 1 - Indicating processing should continue.
! 5969: #
! 5970: sub validate_instcrosslist_handler {
! 5971: my ($cmd, $tail, $client) = @_;
! 5972: my $userinput = "$cmd:$tail";
! 5973: my ($dom,$instcode,$inst_xlist,$coowner) = split(/:/,$tail);
! 5974: $instcode = &unescape($instcode);
! 5975: $inst_xlist = &unescape($inst_xlist);
! 5976: $coowner = &unescape($coowner);
! 5977: my $outcome = &localenroll::validate_crosslist_access($dom,$instcode,
! 5978: $inst_xlist,$coowner);
! 5979: &Reply($client, \$outcome, $userinput);
! 5980:
! 5981: return 1;
! 5982: }
! 5983: ®ister_handler("autovalidateinstcrosslist", \&validate_instcrosslist_handler, 0, 1, 0);
! 5984:
1.248 foxr 5985: # Get the official sections for which auto-enrollment is possible.
5986: # Since the admin people won't know about 'unofficial sections'
5987: # we cannot auto-enroll on them.
5988: # Formal Parameters:
5989: # $cmd - The command request that got us dispatched here.
5990: # $tail - The remainder of the request. In our case this
5991: # will be split into:
5992: # $coursecode - The course name from the admin point of view.
5993: # $cdom - The course's domain(?).
5994: # $client - Socket open on the client.
5995: # Returns:
5996: # 1 - Indiciting processing should continue.
5997: #
5998: sub get_sections_handler {
5999: my ($cmd, $tail, $client) = @_;
6000: my $userinput = "$cmd:$tail";
6001:
6002: my ($coursecode, $cdom) = split(/:/, $tail);
6003: my @secs = &localenroll::get_sections($coursecode,$cdom);
6004: my $seclist = &escape(join(':',@secs));
6005:
1.387 albertel 6006: &Reply($client, \$seclist, $userinput);
1.248 foxr 6007:
6008:
6009: return 1;
6010: }
6011: ®ister_handler("autogetsections", \&get_sections_handler, 0, 1, 0);
6012:
6013: # Validate the owner of a new course section.
6014: #
6015: # Formal Parameters:
6016: # $cmd - Command that got us dispatched.
6017: # $tail - the remainder of the command. For us this consists of a
6018: # colon separated string containing:
6019: # $inst - Course Id from the institutions point of view.
6020: # $owner - Proposed owner of the course.
6021: # $cdom - Domain of the course (from the institutions
6022: # point of view?)..
6023: # $client - Socket open on the client.
6024: #
6025: # Returns:
6026: # 1 - Processing should continue.
6027: #
6028: sub validate_course_owner_handler {
6029: my ($cmd, $tail, $client) = @_;
6030: my $userinput = "$cmd:$tail";
1.470 raeburn 6031: my ($inst_course_id, $owner, $cdom, $coowners) = split(/:/, $tail);
6032:
1.336 raeburn 6033: $owner = &unescape($owner);
1.470 raeburn 6034: $coowners = &unescape($coowners);
6035: my $outcome = &localenroll::new_course($inst_course_id,$owner,$cdom,$coowners);
1.387 albertel 6036: &Reply($client, \$outcome, $userinput);
1.248 foxr 6037:
6038:
6039:
6040: return 1;
6041: }
6042: ®ister_handler("autonewcourse", \&validate_course_owner_handler, 0, 1, 0);
1.263 albertel 6043:
1.248 foxr 6044: #
6045: # Validate a course section in the official schedule of classes
6046: # from the institutions point of view (part of autoenrollment).
6047: #
6048: # Formal Parameters:
6049: # $cmd - The command request that got us dispatched.
6050: # $tail - The tail of the command. In this case,
6051: # this is a colon separated set of words that will be split
6052: # into:
6053: # $inst_course_id - The course/section id from the
6054: # institutions point of view.
6055: # $cdom - The domain from the institutions
6056: # point of view.
6057: # $client - Socket open on the client.
6058: # Returns:
6059: # 1 - Indicating processing should continue.
6060: #
6061: sub validate_course_section_handler {
6062: my ($cmd, $tail, $client) = @_;
6063: my $userinput = "$cmd:$tail";
6064: my ($inst_course_id, $cdom) = split(/:/, $tail);
6065:
6066: my $outcome=&localenroll::validate_courseID($inst_course_id,$cdom);
1.387 albertel 6067: &Reply($client, \$outcome, $userinput);
1.248 foxr 6068:
6069:
6070: return 1;
6071: }
6072: ®ister_handler("autovalidatecourse", \&validate_course_section_handler, 0, 1, 0);
6073:
6074: #
1.340 raeburn 6075: # Validate course owner's access to enrollment data for specific class section.
6076: #
6077: #
6078: # Formal Parameters:
6079: # $cmd - The command request that got us dispatched.
6080: # $tail - The tail of the command. In this case this is a colon separated
1.542 raeburn 6081: # set of values that will be split into:
1.340 raeburn 6082: # $inst_class - Institutional code for the specific class section
1.542 raeburn 6083: # $ownerlist - An escaped comma-separated list of username:domain
6084: # of the course owner, and co-owner(s).
1.340 raeburn 6085: # $cdom - The domain of the course from the institution's
6086: # point of view.
6087: # $client - The socket open on the client.
6088: # Returns:
6089: # 1 - continue processing.
6090: #
6091:
6092: sub validate_class_access_handler {
6093: my ($cmd, $tail, $client) = @_;
6094: my $userinput = "$cmd:$tail";
1.383 raeburn 6095: my ($inst_class,$ownerlist,$cdom) = split(/:/, $tail);
1.392 raeburn 6096: my $owners = &unescape($ownerlist);
1.341 albertel 6097: my $outcome;
6098: eval {
6099: local($SIG{__DIE__})='DEFAULT';
1.392 raeburn 6100: $outcome=&localenroll::check_section($inst_class,$owners,$cdom);
1.341 albertel 6101: };
1.387 albertel 6102: &Reply($client,\$outcome, $userinput);
1.340 raeburn 6103:
6104: return 1;
6105: }
6106: ®ister_handler("autovalidateclass_sec", \&validate_class_access_handler, 0, 1, 0);
6107:
6108: #
1.542 raeburn 6109: # Validate course owner or co-owners(s) access to enrollment data for all sections
6110: # and crosslistings for a particular course.
6111: #
6112: #
6113: # Formal Parameters:
6114: # $cmd - The command request that got us dispatched.
6115: # $tail - The tail of the command. In this case this is a colon separated
6116: # set of values that will be split into:
6117: # $ownerlist - An escaped comma-separated list of username:domain
6118: # of the course owner, and co-owner(s).
6119: # $cdom - The domain of the course from the institution's
6120: # point of view.
6121: # $classes - Frozen hash of institutional course sections and
6122: # crosslistings.
6123: # $client - The socket open on the client.
6124: # Returns:
6125: # 1 - continue processing.
6126: #
6127:
6128: sub validate_classes_handler {
6129: my ($cmd, $tail, $client) = @_;
6130: my $userinput = "$cmd:$tail";
6131: my ($ownerlist,$cdom,$classes) = split(/:/, $tail);
6132: my $classesref = &Apache::lonnet::thaw_unescape($classes);
6133: my $owners = &unescape($ownerlist);
6134: my $result;
6135: eval {
6136: local($SIG{__DIE__})='DEFAULT';
6137: my %validations;
6138: my $response = &localenroll::check_instclasses($owners,$cdom,$classesref,
6139: \%validations);
6140: if ($response eq 'ok') {
6141: foreach my $key (keys(%validations)) {
6142: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($validations{$key}).'&';
6143: }
6144: $result =~ s/\&$//;
6145: } else {
6146: $result = 'error';
6147: }
6148: };
6149: if (!$@) {
6150: &Reply($client, \$result, $userinput);
6151: } else {
6152: &Failure($client,"unknown_cmd\n",$userinput);
6153: }
6154: return 1;
6155: }
6156: ®ister_handler("autovalidateinstclasses", \&validate_classes_handler, 0, 1, 0);
6157:
6158: #
1.340 raeburn 6159: # Create a password for a new LON-CAPA user added by auto-enrollment.
6160: # Only used for case where authentication method for new user is localauth
1.248 foxr 6161: #
6162: # Formal Parameters:
6163: # $cmd - The command request that got us dispatched.
6164: # $tail - The tail of the command. In this case this is a colon separated
6165: # set of words that will be split into:
1.340 raeburn 6166: # $authparam - An authentication parameter (localauth parameter).
1.248 foxr 6167: # $cdom - The domain of the course from the institution's
6168: # point of view.
6169: # $client - The socket open on the client.
6170: # Returns:
6171: # 1 - continue processing.
6172: #
6173: sub create_auto_enroll_password_handler {
6174: my ($cmd, $tail, $client) = @_;
6175: my $userinput = "$cmd:$tail";
6176:
6177: my ($authparam, $cdom) = split(/:/, $userinput);
6178:
6179: my ($create_passwd,$authchk);
6180: ($authparam,
6181: $create_passwd,
6182: $authchk) = &localenroll::create_password($authparam,$cdom);
6183:
6184: &Reply($client, &escape($authparam.':'.$create_passwd.':'.$authchk)."\n",
6185: $userinput);
6186:
6187:
6188: return 1;
6189: }
6190: ®ister_handler("autocreatepassword", \&create_auto_enroll_password_handler,
6191: 0, 1, 0);
6192:
1.522 raeburn 6193: sub auto_export_grades_handler {
6194: my ($cmd, $tail, $client) = @_;
6195: my $userinput = "$cmd:$tail";
6196: my ($cdom,$cnum,$info,$data) = split(/:/,$tail);
6197: my $inforef = &Apache::lonnet::thaw_unescape($info);
6198: my $dataref = &Apache::lonnet::thaw_unescape($data);
6199: my ($outcome,$result);;
6200: eval {
6201: local($SIG{__DIE__})='DEFAULT';
6202: my %rtnhash;
6203: $outcome=&localenroll::export_grades($cdom,$cnum,$inforef,$dataref,\%rtnhash);
6204: if ($outcome eq 'ok') {
6205: foreach my $key (keys(%rtnhash)) {
6206: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($rtnhash{$key}).'&';
6207: }
6208: $result =~ s/\&$//;
6209: }
6210: };
6211: if (!$@) {
6212: if ($outcome eq 'ok') {
6213: if ($cipher) {
6214: my $cmdlength=length($result);
6215: $result.=" ";
6216: my $encresult='';
6217: for (my $encidx=0;$encidx<=$cmdlength;$encidx+=8) {
6218: $encresult.= unpack("H16",
6219: $cipher->encrypt(substr($result,
6220: $encidx,
6221: 8)));
6222: }
6223: &Reply( $client, "enc:$cmdlength:$encresult\n", $userinput);
6224: } else {
6225: &Failure( $client, "error:no_key\n", $userinput);
6226: }
6227: } else {
6228: &Reply($client, "$outcome\n", $userinput);
6229: }
6230: } else {
6231: &Failure($client,"export_error\n",$userinput);
6232: }
6233: return 1;
6234: }
6235: ®ister_handler("autoexportgrades", \&auto_export_grades_handler,
1.536 raeburn 6236: 1, 1, 0);
1.522 raeburn 6237:
1.248 foxr 6238: # Retrieve and remove temporary files created by/during autoenrollment.
6239: #
6240: # Formal Parameters:
6241: # $cmd - The command that got us dispatched.
6242: # $tail - The tail of the command. In our case this is a colon
6243: # separated list that will be split into:
1.526 raeburn 6244: # $filename - The name of the file to retrieve.
1.248 foxr 6245: # The filename is given as a path relative to
6246: # the LonCAPA temp file directory.
6247: # $client - Socket open on the client.
6248: #
6249: # Returns:
6250: # 1 - Continue processing.
6251: sub retrieve_auto_file_handler {
6252: my ($cmd, $tail, $client) = @_;
6253: my $userinput = "cmd:$tail";
6254:
6255: my ($filename) = split(/:/, $tail);
6256:
6257: my $source = $perlvar{'lonDaemons'}.'/tmp/'.$filename;
1.521 raeburn 6258:
6259: if ($filename =~m{/\.\./}) {
6260: &Failure($client, "refused\n", $userinput);
1.526 raeburn 6261: } elsif ($filename !~ /^$LONCAPA::match_domain\_$LONCAPA::match_courseid\_.+_classlist\.xml$/) {
6262: &Failure($client, "refused\n", $userinput);
1.521 raeburn 6263: } elsif ( (-e $source) && ($filename ne '') ) {
1.248 foxr 6264: my $reply = '';
6265: if (open(my $fh,$source)) {
6266: while (<$fh>) {
6267: chomp($_);
6268: $_ =~ s/^\s+//g;
6269: $_ =~ s/\s+$//g;
6270: $reply .= $_;
6271: }
6272: close($fh);
6273: &Reply($client, &escape($reply)."\n", $userinput);
6274:
6275: # Does this have to be uncommented??!? (RF).
6276: #
6277: # unlink($source);
6278: } else {
6279: &Failure($client, "error\n", $userinput);
6280: }
6281: } else {
6282: &Failure($client, "error\n", $userinput);
6283: }
6284:
6285:
6286: return 1;
6287: }
6288: ®ister_handler("autoretrieve", \&retrieve_auto_file_handler, 0,1,0);
6289:
1.423 raeburn 6290: sub crsreq_checks_handler {
6291: my ($cmd, $tail, $client) = @_;
6292: my $userinput = "$cmd:$tail";
6293: my $dom = $tail;
6294: my $result;
1.519 raeburn 6295: my @reqtypes = ('official','unofficial','community','textbook','placement');
1.423 raeburn 6296: eval {
6297: local($SIG{__DIE__})='DEFAULT';
6298: my %validations;
1.424 raeburn 6299: my $response = &localenroll::crsreq_checks($dom,\@reqtypes,
6300: \%validations);
1.423 raeburn 6301: if ($response eq 'ok') {
6302: foreach my $key (keys(%validations)) {
6303: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($validations{$key}).'&';
6304: }
6305: $result =~ s/\&$//;
6306: } else {
6307: $result = 'error';
6308: }
6309: };
6310: if (!$@) {
6311: &Reply($client, \$result, $userinput);
6312: } else {
6313: &Failure($client,"unknown_cmd\n",$userinput);
6314: }
6315: return 1;
6316: }
6317: ®ister_handler("autocrsreqchecks", \&crsreq_checks_handler, 0, 1, 0);
6318:
6319: sub validate_crsreq_handler {
6320: my ($cmd, $tail, $client) = @_;
6321: my $userinput = "$cmd:$tail";
1.508 raeburn 6322: my ($dom,$owner,$crstype,$inststatuslist,$instcode,$instseclist,$customdata) = split(/:/, $tail);
1.423 raeburn 6323: $instcode = &unescape($instcode);
6324: $owner = &unescape($owner);
6325: $crstype = &unescape($crstype);
6326: $inststatuslist = &unescape($inststatuslist);
6327: $instcode = &unescape($instcode);
6328: $instseclist = &unescape($instseclist);
1.508 raeburn 6329: my $custominfo = &Apache::lonnet::thaw_unescape($customdata);
1.423 raeburn 6330: my $outcome;
6331: eval {
6332: local($SIG{__DIE__})='DEFAULT';
6333: $outcome = &localenroll::validate_crsreq($dom,$owner,$crstype,
6334: $inststatuslist,$instcode,
1.508 raeburn 6335: $instseclist,$custominfo);
1.423 raeburn 6336: };
6337: if (!$@) {
6338: &Reply($client, \$outcome, $userinput);
6339: } else {
6340: &Failure($client,"unknown_cmd\n",$userinput);
6341: }
6342: return 1;
6343: }
6344: ®ister_handler("autocrsreqvalidation", \&validate_crsreq_handler, 0, 1, 0);
6345:
1.506 raeburn 6346: sub crsreq_update_handler {
6347: my ($cmd, $tail, $client) = @_;
6348: my $userinput = "$cmd:$tail";
1.509 raeburn 6349: my ($cdom,$cnum,$crstype,$action,$ownername,$ownerdomain,$fullname,$title,$code,
6350: $accessstart,$accessend,$infohashref) =
1.506 raeburn 6351: split(/:/, $tail);
6352: $crstype = &unescape($crstype);
6353: $action = &unescape($action);
6354: $ownername = &unescape($ownername);
6355: $ownerdomain = &unescape($ownerdomain);
6356: $fullname = &unescape($fullname);
6357: $title = &unescape($title);
6358: $code = &unescape($code);
1.509 raeburn 6359: $accessstart = &unescape($accessstart);
6360: $accessend = &unescape($accessend);
1.506 raeburn 6361: my $incoming = &Apache::lonnet::thaw_unescape($infohashref);
6362: my ($result,$outcome);
6363: eval {
6364: local($SIG{__DIE__})='DEFAULT';
6365: my %rtnhash;
6366: $outcome = &localenroll::crsreq_updates($cdom,$cnum,$crstype,$action,
6367: $ownername,$ownerdomain,$fullname,
1.509 raeburn 6368: $title,$code,$accessstart,$accessend,
6369: $incoming,\%rtnhash);
1.506 raeburn 6370: if ($outcome eq 'ok') {
1.515 raeburn 6371: my @posskeys = qw(createdweb createdmsg createdcustomized createdactions queuedweb queuedmsg formitems reviewweb validationjs onload javascript);
1.506 raeburn 6372: foreach my $key (keys(%rtnhash)) {
6373: if (grep(/^\Q$key\E/,@posskeys)) {
6374: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($rtnhash{$key}).'&';
6375: }
6376: }
6377: $result =~ s/\&$//;
6378: }
6379: };
6380: if (!$@) {
6381: if ($outcome eq 'ok') {
6382: &Reply($client, \$result, $userinput);
6383: } else {
6384: &Reply($client, "format_error\n", $userinput);
6385: }
6386: } else {
6387: &Failure($client,"unknown_cmd\n",$userinput);
6388: }
6389: return 1;
6390: }
6391: ®ister_handler("autocrsrequpdate", \&crsreq_update_handler, 0, 1, 0);
6392:
1.248 foxr 6393: #
6394: # Read and retrieve institutional code format (for support form).
6395: # Formal Parameters:
6396: # $cmd - Command that dispatched us.
6397: # $tail - Tail of the command. In this case it conatins
6398: # the course domain and the coursename.
6399: # $client - Socket open on the client.
6400: # Returns:
6401: # 1 - Continue processing.
6402: #
6403: sub get_institutional_code_format_handler {
6404: my ($cmd, $tail, $client) = @_;
6405: my $userinput = "$cmd:$tail";
6406:
6407: my $reply;
6408: my($cdom,$course) = split(/:/,$tail);
6409: my @pairs = split/\&/,$course;
6410: my %instcodes = ();
6411: my %codes = ();
6412: my @codetitles = ();
6413: my %cat_titles = ();
6414: my %cat_order = ();
6415: foreach (@pairs) {
6416: my ($key,$value) = split/=/,$_;
6417: $instcodes{&unescape($key)} = &unescape($value);
6418: }
6419: my $formatreply = &localenroll::instcode_format($cdom,
6420: \%instcodes,
6421: \%codes,
6422: \@codetitles,
6423: \%cat_titles,
6424: \%cat_order);
6425: if ($formatreply eq 'ok') {
1.365 albertel 6426: my $codes_str = &Apache::lonnet::hash2str(%codes);
6427: my $codetitles_str = &Apache::lonnet::array2str(@codetitles);
6428: my $cat_titles_str = &Apache::lonnet::hash2str(%cat_titles);
6429: my $cat_order_str = &Apache::lonnet::hash2str(%cat_order);
1.248 foxr 6430: &Reply($client,
6431: $codes_str.':'.$codetitles_str.':'.$cat_titles_str.':'
6432: .$cat_order_str."\n",
6433: $userinput);
6434: } else {
6435: # this else branch added by RF since if not ok, lonc will
6436: # hang waiting on reply until timeout.
6437: #
6438: &Reply($client, "format_error\n", $userinput);
6439: }
6440:
6441: return 1;
6442: }
1.265 albertel 6443: ®ister_handler("autoinstcodeformat",
6444: \&get_institutional_code_format_handler,0,1,0);
1.246 foxr 6445:
1.345 raeburn 6446: sub get_institutional_defaults_handler {
6447: my ($cmd, $tail, $client) = @_;
6448: my $userinput = "$cmd:$tail";
6449:
6450: my $dom = $tail;
6451: my %defaults_hash;
6452: my @code_order;
6453: my $outcome;
6454: eval {
6455: local($SIG{__DIE__})='DEFAULT';
6456: $outcome = &localenroll::instcode_defaults($dom,\%defaults_hash,
6457: \@code_order);
6458: };
6459: if (!$@) {
6460: if ($outcome eq 'ok') {
6461: my $result='';
6462: while (my ($key,$value) = each(%defaults_hash)) {
6463: $result.=&escape($key).'='.&escape($value).'&';
6464: }
6465: $result .= 'code_order='.&escape(join('&',@code_order));
1.387 albertel 6466: &Reply($client,\$result,$userinput);
1.345 raeburn 6467: } else {
6468: &Reply($client,"error\n", $userinput);
6469: }
6470: } else {
6471: &Failure($client,"unknown_cmd\n",$userinput);
6472: }
6473: }
6474: ®ister_handler("autoinstcodedefaults",
6475: \&get_institutional_defaults_handler,0,1,0);
6476:
1.416 raeburn 6477: sub get_possible_instcodes_handler {
6478: my ($cmd, $tail, $client) = @_;
6479: my $userinput = "$cmd:$tail";
6480:
6481: my $reply;
6482: my $cdom = $tail;
1.417 raeburn 6483: my (@codetitles,%cat_titles,%cat_order,@code_order);
1.416 raeburn 6484: my $formatreply = &localenroll::possible_instcodes($cdom,
6485: \@codetitles,
6486: \%cat_titles,
1.417 raeburn 6487: \%cat_order,
6488: \@code_order);
1.416 raeburn 6489: if ($formatreply eq 'ok') {
6490: my $result = join('&',map {&escape($_);} (@codetitles)).':';
1.417 raeburn 6491: $result .= join('&',map {&escape($_);} (@code_order)).':';
1.416 raeburn 6492: foreach my $key (keys(%cat_titles)) {
6493: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($cat_titles{$key}).'&';
6494: }
6495: $result =~ s/\&$//;
6496: $result .= ':';
6497: foreach my $key (keys(%cat_order)) {
6498: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($cat_order{$key}).'&';
6499: }
6500: $result =~ s/\&$//;
6501: &Reply($client,\$result,$userinput);
6502: } else {
6503: &Reply($client, "format_error\n", $userinput);
6504: }
6505: return 1;
6506: }
6507: ®ister_handler("autopossibleinstcodes",
6508: \&get_possible_instcodes_handler,0,1,0);
6509:
1.381 raeburn 6510: sub get_institutional_user_rules {
6511: my ($cmd, $tail, $client) = @_;
6512: my $userinput = "$cmd:$tail";
6513: my $dom = &unescape($tail);
6514: my (%rules_hash,@rules_order);
6515: my $outcome;
6516: eval {
6517: local($SIG{__DIE__})='DEFAULT';
6518: $outcome = &localenroll::username_rules($dom,\%rules_hash,\@rules_order);
6519: };
6520: if (!$@) {
6521: if ($outcome eq 'ok') {
6522: my $result;
6523: foreach my $key (keys(%rules_hash)) {
6524: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($rules_hash{$key}).'&';
6525: }
6526: $result =~ s/\&$//;
6527: $result .= ':';
6528: if (@rules_order > 0) {
6529: foreach my $item (@rules_order) {
6530: $result .= &escape($item).'&';
6531: }
6532: }
6533: $result =~ s/\&$//;
1.387 albertel 6534: &Reply($client,\$result,$userinput);
1.381 raeburn 6535: } else {
6536: &Reply($client,"error\n", $userinput);
6537: }
6538: } else {
6539: &Failure($client,"unknown_cmd\n",$userinput);
6540: }
6541: }
6542: ®ister_handler("instuserrules",\&get_institutional_user_rules,0,1,0);
6543:
1.389 raeburn 6544: sub get_institutional_id_rules {
6545: my ($cmd, $tail, $client) = @_;
6546: my $userinput = "$cmd:$tail";
6547: my $dom = &unescape($tail);
6548: my (%rules_hash,@rules_order);
6549: my $outcome;
6550: eval {
6551: local($SIG{__DIE__})='DEFAULT';
6552: $outcome = &localenroll::id_rules($dom,\%rules_hash,\@rules_order);
6553: };
6554: if (!$@) {
6555: if ($outcome eq 'ok') {
6556: my $result;
6557: foreach my $key (keys(%rules_hash)) {
6558: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($rules_hash{$key}).'&';
6559: }
6560: $result =~ s/\&$//;
6561: $result .= ':';
6562: if (@rules_order > 0) {
6563: foreach my $item (@rules_order) {
6564: $result .= &escape($item).'&';
6565: }
6566: }
6567: $result =~ s/\&$//;
6568: &Reply($client,\$result,$userinput);
6569: } else {
6570: &Reply($client,"error\n", $userinput);
6571: }
6572: } else {
6573: &Failure($client,"unknown_cmd\n",$userinput);
6574: }
6575: }
6576: ®ister_handler("instidrules",\&get_institutional_id_rules,0,1,0);
6577:
1.397 raeburn 6578: sub get_institutional_selfcreate_rules {
1.396 raeburn 6579: my ($cmd, $tail, $client) = @_;
6580: my $userinput = "$cmd:$tail";
6581: my $dom = &unescape($tail);
6582: my (%rules_hash,@rules_order);
6583: my $outcome;
6584: eval {
6585: local($SIG{__DIE__})='DEFAULT';
1.397 raeburn 6586: $outcome = &localenroll::selfcreate_rules($dom,\%rules_hash,\@rules_order);
1.396 raeburn 6587: };
6588: if (!$@) {
6589: if ($outcome eq 'ok') {
6590: my $result;
6591: foreach my $key (keys(%rules_hash)) {
6592: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($rules_hash{$key}).'&';
6593: }
6594: $result =~ s/\&$//;
6595: $result .= ':';
6596: if (@rules_order > 0) {
6597: foreach my $item (@rules_order) {
6598: $result .= &escape($item).'&';
6599: }
6600: }
6601: $result =~ s/\&$//;
6602: &Reply($client,\$result,$userinput);
6603: } else {
6604: &Reply($client,"error\n", $userinput);
6605: }
6606: } else {
6607: &Failure($client,"unknown_cmd\n",$userinput);
6608: }
6609: }
1.397 raeburn 6610: ®ister_handler("instemailrules",\&get_institutional_selfcreate_rules,0,1,0);
1.396 raeburn 6611:
1.381 raeburn 6612:
6613: sub institutional_username_check {
6614: my ($cmd, $tail, $client) = @_;
6615: my $userinput = "$cmd:$tail";
6616: my %rulecheck;
6617: my $outcome;
6618: my ($udom,$uname,@rules) = split(/:/,$tail);
6619: $udom = &unescape($udom);
6620: $uname = &unescape($uname);
6621: @rules = map {&unescape($_);} (@rules);
6622: eval {
6623: local($SIG{__DIE__})='DEFAULT';
6624: $outcome = &localenroll::username_check($udom,$uname,\@rules,\%rulecheck);
6625: };
6626: if (!$@) {
6627: if ($outcome eq 'ok') {
6628: my $result='';
6629: foreach my $key (keys(%rulecheck)) {
6630: $result.=&escape($key).'='.&Apache::lonnet::freeze_escape($rulecheck{$key}).'&';
6631: }
1.387 albertel 6632: &Reply($client,\$result,$userinput);
1.381 raeburn 6633: } else {
6634: &Reply($client,"error\n", $userinput);
6635: }
6636: } else {
6637: &Failure($client,"unknown_cmd\n",$userinput);
6638: }
6639: }
6640: ®ister_handler("instrulecheck",\&institutional_username_check,0,1,0);
6641:
1.389 raeburn 6642: sub institutional_id_check {
6643: my ($cmd, $tail, $client) = @_;
6644: my $userinput = "$cmd:$tail";
6645: my %rulecheck;
6646: my $outcome;
6647: my ($udom,$id,@rules) = split(/:/,$tail);
6648: $udom = &unescape($udom);
6649: $id = &unescape($id);
6650: @rules = map {&unescape($_);} (@rules);
6651: eval {
6652: local($SIG{__DIE__})='DEFAULT';
6653: $outcome = &localenroll::id_check($udom,$id,\@rules,\%rulecheck);
6654: };
6655: if (!$@) {
6656: if ($outcome eq 'ok') {
6657: my $result='';
6658: foreach my $key (keys(%rulecheck)) {
6659: $result.=&escape($key).'='.&Apache::lonnet::freeze_escape($rulecheck{$key}).'&';
6660: }
6661: &Reply($client,\$result,$userinput);
6662: } else {
6663: &Reply($client,"error\n", $userinput);
6664: }
6665: } else {
6666: &Failure($client,"unknown_cmd\n",$userinput);
6667: }
6668: }
6669: ®ister_handler("instidrulecheck",\&institutional_id_check,0,1,0);
1.345 raeburn 6670:
1.397 raeburn 6671: sub institutional_selfcreate_check {
1.396 raeburn 6672: my ($cmd, $tail, $client) = @_;
6673: my $userinput = "$cmd:$tail";
6674: my %rulecheck;
6675: my $outcome;
6676: my ($udom,$email,@rules) = split(/:/,$tail);
6677: $udom = &unescape($udom);
6678: $email = &unescape($email);
6679: @rules = map {&unescape($_);} (@rules);
6680: eval {
6681: local($SIG{__DIE__})='DEFAULT';
1.397 raeburn 6682: $outcome = &localenroll::selfcreate_check($udom,$email,\@rules,\%rulecheck);
1.396 raeburn 6683: };
6684: if (!$@) {
6685: if ($outcome eq 'ok') {
6686: my $result='';
6687: foreach my $key (keys(%rulecheck)) {
6688: $result.=&escape($key).'='.&Apache::lonnet::freeze_escape($rulecheck{$key}).'&';
6689: }
6690: &Reply($client,\$result,$userinput);
6691: } else {
6692: &Reply($client,"error\n", $userinput);
6693: }
6694: } else {
6695: &Failure($client,"unknown_cmd\n",$userinput);
6696: }
6697: }
1.397 raeburn 6698: ®ister_handler("instselfcreatecheck",\&institutional_selfcreate_check,0,1,0);
1.396 raeburn 6699:
1.317 raeburn 6700: # Get domain specific conditions for import of student photographs to a course
6701: #
6702: # Retrieves information from photo_permission subroutine in localenroll.
6703: # Returns outcome (ok) if no processing errors, and whether course owner is
6704: # required to accept conditions of use (yes/no).
6705: #
6706: #
6707: sub photo_permission_handler {
6708: my ($cmd, $tail, $client) = @_;
6709: my $userinput = "$cmd:$tail";
6710: my $cdom = $tail;
6711: my ($perm_reqd,$conditions);
1.320 albertel 6712: my $outcome;
6713: eval {
6714: local($SIG{__DIE__})='DEFAULT';
6715: $outcome = &localenroll::photo_permission($cdom,\$perm_reqd,
6716: \$conditions);
6717: };
6718: if (!$@) {
6719: &Reply($client, &escape($outcome.':'.$perm_reqd.':'. $conditions)."\n",
6720: $userinput);
6721: } else {
6722: &Failure($client,"unknown_cmd\n",$userinput);
6723: }
6724: return 1;
1.317 raeburn 6725: }
6726: ®ister_handler("autophotopermission",\&photo_permission_handler,0,1,0);
6727:
6728: #
6729: # Checks if student photo is available for a user in the domain, in the user's
6730: # directory (in /userfiles/internal/studentphoto.jpg).
6731: # Uses localstudentphoto:fetch() to ensure there is an up to date copy of
6732: # the student's photo.
6733:
6734: sub photo_check_handler {
6735: my ($cmd, $tail, $client) = @_;
6736: my $userinput = "$cmd:$tail";
6737: my ($udom,$uname,$pid) = split(/:/,$tail);
6738: $udom = &unescape($udom);
6739: $uname = &unescape($uname);
6740: $pid = &unescape($pid);
6741: my $path=&propath($udom,$uname).'/userfiles/internal/';
6742: if (!-e $path) {
6743: &mkpath($path);
6744: }
6745: my $response;
6746: my $result = &localstudentphoto::fetch($udom,$uname,$pid,\$response);
6747: $result .= ':'.$response;
6748: &Reply($client, &escape($result)."\n",$userinput);
1.320 albertel 6749: return 1;
1.317 raeburn 6750: }
6751: ®ister_handler("autophotocheck",\&photo_check_handler,0,1,0);
6752:
6753: #
6754: # Retrieve information from localenroll about whether to provide a button
6755: # for users who have enbled import of student photos to initiate an
6756: # update of photo files for registered students. Also include
6757: # comment to display alongside button.
6758:
6759: sub photo_choice_handler {
6760: my ($cmd, $tail, $client) = @_;
6761: my $userinput = "$cmd:$tail";
6762: my $cdom = &unescape($tail);
1.320 albertel 6763: my ($update,$comment);
6764: eval {
6765: local($SIG{__DIE__})='DEFAULT';
6766: ($update,$comment) = &localenroll::manager_photo_update($cdom);
6767: };
6768: if (!$@) {
6769: &Reply($client,&escape($update).':'.&escape($comment)."\n",$userinput);
6770: } else {
6771: &Failure($client,"unknown_cmd\n",$userinput);
6772: }
6773: return 1;
1.317 raeburn 6774: }
6775: ®ister_handler("autophotochoice",\&photo_choice_handler,0,1,0);
6776:
1.265 albertel 6777: #
6778: # Gets a student's photo to exist (in the correct image type) in the user's
6779: # directory.
6780: # Formal Parameters:
6781: # $cmd - The command request that got us dispatched.
6782: # $tail - A colon separated set of words that will be split into:
6783: # $domain - student's domain
6784: # $uname - student username
6785: # $type - image type desired
6786: # $client - The socket open on the client.
6787: # Returns:
6788: # 1 - continue processing.
1.317 raeburn 6789:
1.265 albertel 6790: sub student_photo_handler {
6791: my ($cmd, $tail, $client) = @_;
1.317 raeburn 6792: my ($domain,$uname,$ext,$type) = split(/:/, $tail);
1.265 albertel 6793:
1.317 raeburn 6794: my $path=&propath($domain,$uname). '/userfiles/internal/';
6795: my $filename = 'studentphoto.'.$ext;
6796: if ($type eq 'thumbnail') {
6797: $filename = 'studentphoto_tn.'.$ext;
6798: }
6799: if (-e $path.$filename) {
1.265 albertel 6800: &Reply($client,"ok\n","$cmd:$tail");
6801: return 1;
6802: }
6803: &mkpath($path);
1.317 raeburn 6804: my $file;
6805: if ($type eq 'thumbnail') {
1.320 albertel 6806: eval {
6807: local($SIG{__DIE__})='DEFAULT';
6808: $file=&localstudentphoto::fetch_thumbnail($domain,$uname);
6809: };
1.317 raeburn 6810: } else {
6811: $file=&localstudentphoto::fetch($domain,$uname);
6812: }
1.265 albertel 6813: if (!$file) {
6814: &Failure($client,"unavailable\n","$cmd:$tail");
6815: return 1;
6816: }
1.317 raeburn 6817: if (!-e $path.$filename) { &convert_photo($file,$path.$filename); }
6818: if (-e $path.$filename) {
1.265 albertel 6819: &Reply($client,"ok\n","$cmd:$tail");
6820: return 1;
6821: }
6822: &Failure($client,"unable_to_convert\n","$cmd:$tail");
6823: return 1;
6824: }
6825: ®ister_handler("studentphoto", \&student_photo_handler, 0, 1, 0);
1.246 foxr 6826:
1.361 raeburn 6827: sub inst_usertypes_handler {
6828: my ($cmd, $domain, $client) = @_;
6829: my $res;
6830: my $userinput = $cmd.":".$domain; # For logging purposes.
1.370 albertel 6831: my (%typeshash,@order,$result);
6832: eval {
6833: local($SIG{__DIE__})='DEFAULT';
6834: $result=&localenroll::inst_usertypes($domain,\%typeshash,\@order);
6835: };
6836: if ($result eq 'ok') {
1.361 raeburn 6837: if (keys(%typeshash) > 0) {
6838: foreach my $key (keys(%typeshash)) {
6839: $res.=&escape($key).'='.&escape($typeshash{$key}).'&';
6840: }
6841: }
6842: $res=~s/\&$//;
6843: $res .= ':';
6844: if (@order > 0) {
6845: foreach my $item (@order) {
6846: $res .= &escape($item).'&';
6847: }
6848: }
6849: $res=~s/\&$//;
6850: }
1.387 albertel 6851: &Reply($client, \$res, $userinput);
1.361 raeburn 6852: return 1;
6853: }
6854: ®ister_handler("inst_usertypes", \&inst_usertypes_handler, 0, 1, 0);
6855:
1.264 albertel 6856: # mkpath makes all directories for a file, expects an absolute path with a
6857: # file or a trailing / if just a dir is passed
6858: # returns 1 on success 0 on failure
6859: sub mkpath {
6860: my ($file)=@_;
6861: my @parts=split(/\//,$file,-1);
6862: my $now=$parts[0].'/'.$parts[1].'/'.$parts[2];
6863: for (my $i=3;$i<= ($#parts-1);$i++) {
1.265 albertel 6864: $now.='/'.$parts[$i];
1.264 albertel 6865: if (!-e $now) {
6866: if (!mkdir($now,0770)) { return 0; }
6867: }
6868: }
6869: return 1;
6870: }
6871:
1.207 foxr 6872: #---------------------------------------------------------------
6873: #
6874: # Getting, decoding and dispatching requests:
6875: #
6876: #
6877: # Get a Request:
6878: # Gets a Request message from the client. The transaction
6879: # is defined as a 'line' of text. We remove the new line
6880: # from the text line.
1.226 foxr 6881: #
1.211 albertel 6882: sub get_request {
1.207 foxr 6883: my $input = <$client>;
6884: chomp($input);
1.226 foxr 6885:
1.234 foxr 6886: &Debug("get_request: Request = $input\n");
1.207 foxr 6887:
6888: &status('Processing '.$clientname.':'.$input);
6889:
6890: return $input;
6891: }
1.212 foxr 6892: #---------------------------------------------------------------
6893: #
6894: # Process a request. This sub should shrink as each action
6895: # gets farmed out into a separat sub that is registered
6896: # with the dispatch hash.
6897: #
6898: # Parameters:
6899: # user_input - The request received from the client (lonc).
1.525 raeburn 6900: #
1.212 foxr 6901: # Returns:
6902: # true to keep processing, false if caller should exit.
6903: #
6904: sub process_request {
1.525 raeburn 6905: my ($userinput) = @_; # Easier for now to break style than to
6906: # fix all the userinput -> user_input.
1.212 foxr 6907: my $wasenc = 0; # True if request was encrypted.
6908: # ------------------------------------------------------------ See if encrypted
1.322 albertel 6909: # for command
6910: # sethost:<server>
6911: # <command>:<args>
6912: # we just send it to the processor
6913: # for
6914: # sethost:<server>:<command>:<args>
6915: # we do the implict set host and then do the command
6916: if ($userinput =~ /^sethost:/) {
6917: (my $cmd,my $newid,$userinput) = split(':',$userinput,3);
6918: if (defined($userinput)) {
6919: &sethost("$cmd:$newid");
6920: } else {
6921: $userinput = "$cmd:$newid";
6922: }
6923: }
6924:
1.212 foxr 6925: if ($userinput =~ /^enc/) {
6926: $userinput = decipher($userinput);
6927: $wasenc=1;
6928: if(!$userinput) { # Cipher not defined.
1.251 foxr 6929: &Failure($client, "error: Encrypted data without negotated key\n");
1.212 foxr 6930: return 0;
6931: }
6932: }
6933: Debug("process_request: $userinput\n");
6934:
1.213 foxr 6935: #
6936: # The 'correct way' to add a command to lond is now to
6937: # write a sub to execute it and Add it to the command dispatch
6938: # hash via a call to register_handler.. The comments to that
6939: # sub should give you enough to go on to show how to do this
6940: # along with the examples that are building up as this code
6941: # is getting refactored. Until all branches of the
6942: # if/elseif monster below have been factored out into
6943: # separate procesor subs, if the dispatch hash is missing
6944: # the command keyword, we will fall through to the remainder
6945: # of the if/else chain below in order to keep this thing in
6946: # working order throughout the transmogrification.
6947:
6948: my ($command, $tail) = split(/:/, $userinput, 2);
6949: chomp($command);
6950: chomp($tail);
6951: $tail =~ s/(\r)//; # This helps people debugging with e.g. telnet.
1.214 foxr 6952: $command =~ s/(\r)//; # And this too for parameterless commands.
6953: if(!$tail) {
6954: $tail =""; # defined but blank.
6955: }
1.213 foxr 6956:
6957: &Debug("Command received: $command, encoded = $wasenc");
6958:
6959: if(defined $Dispatcher{$command}) {
6960:
6961: my $dispatch_info = $Dispatcher{$command};
6962: my $handler = $$dispatch_info[0];
6963: my $need_encode = $$dispatch_info[1];
6964: my $client_types = $$dispatch_info[2];
6965: Debug("Matched dispatch hash: mustencode: $need_encode "
6966: ."ClientType $client_types");
6967:
6968: # Validate the request:
6969:
6970: my $ok = 1;
6971: my $requesterprivs = 0;
6972: if(&isClient()) {
6973: $requesterprivs |= $CLIENT_OK;
6974: }
6975: if(&isManager()) {
6976: $requesterprivs |= $MANAGER_OK;
6977: }
6978: if($need_encode && (!$wasenc)) {
6979: Debug("Must encode but wasn't: $need_encode $wasenc");
6980: $ok = 0;
6981: }
6982: if(($client_types & $requesterprivs) == 0) {
6983: Debug("Client not privileged to do this operation");
6984: $ok = 0;
6985: }
1.525 raeburn 6986: if ($ok) {
1.535 raeburn 6987: my $realcommand = $command;
6988: if ($command eq 'querysend') {
6989: my ($query,$rest)=split(/\:/,$tail,2);
6990: $query=~s/\n*$//g;
6991: my @possqueries =
6992: qw(userlog courselog fetchenrollment institutionalphotos usersearch instdirsearch getinstuser getmultinstusers);
6993: if (grep(/^\Q$query\E$/,@possqueries)) {
6994: $command .= '_'.$query;
6995: } elsif ($query eq 'prepare activity log') {
6996: $command .= '_activitylog';
6997: }
6998: }
1.525 raeburn 6999: if (ref($trust{$command}) eq 'HASH') {
7000: my $donechecks;
7001: if ($trust{$command}{'anywhere'}) {
7002: $donechecks = 1;
7003: } elsif ($trust{$command}{'manageronly'}) {
7004: unless (&isManager()) {
7005: $ok = 0;
7006: }
7007: $donechecks = 1;
7008: } elsif ($trust{$command}{'institutiononly'}) {
7009: unless ($clientsameinst) {
7010: $ok = 0;
7011: }
7012: $donechecks = 1;
7013: } elsif ($clientsameinst) {
7014: $donechecks = 1;
7015: }
7016: unless ($donechecks) {
7017: foreach my $rule (keys(%{$trust{$command}})) {
7018: next if ($rule eq 'remote');
7019: if ($trust{$command}{$rule}) {
7020: if ($clientprohibited{$rule}) {
7021: $ok = 0;
7022: } else {
7023: $ok = 1;
7024: $donechecks = 1;
7025: last;
7026: }
7027: }
7028: }
7029: }
7030: unless ($donechecks) {
7031: if ($trust{$command}{'remote'}) {
7032: if ($clientremoteok) {
7033: $ok = 1;
7034: } else {
7035: $ok = 0;
7036: }
7037: }
7038: }
7039: }
1.535 raeburn 7040: $command = $realcommand;
1.525 raeburn 7041: }
1.213 foxr 7042:
7043: if($ok) {
7044: Debug("Dispatching to handler $command $tail");
7045: my $keep_going = &$handler($command, $tail, $client);
7046: return $keep_going;
7047: } else {
7048: Debug("Refusing to dispatch because client did not match requirements");
7049: Failure($client, "refused\n", $userinput);
7050: return 1;
7051: }
1.525 raeburn 7052: }
1.213 foxr 7053:
1.262 foxr 7054: print $client "unknown_cmd\n";
1.212 foxr 7055: # -------------------------------------------------------------------- complete
7056: Debug("process_request - returning 1");
7057: return 1;
7058: }
1.207 foxr 7059: #
7060: # Decipher encoded traffic
7061: # Parameters:
7062: # input - Encoded data.
7063: # Returns:
7064: # Decoded data or undef if encryption key was not yet negotiated.
7065: # Implicit input:
7066: # cipher - This global holds the negotiated encryption key.
7067: #
1.211 albertel 7068: sub decipher {
1.207 foxr 7069: my ($input) = @_;
7070: my $output = '';
1.212 foxr 7071:
7072:
1.207 foxr 7073: if($cipher) {
7074: my($enc, $enclength, $encinput) = split(/:/, $input);
7075: for(my $encidx = 0; $encidx < length($encinput); $encidx += 16) {
7076: $output .=
7077: $cipher->decrypt(pack("H16", substr($encinput, $encidx, 16)));
7078: }
7079: return substr($output, 0, $enclength);
7080: } else {
7081: return undef;
7082: }
7083: }
7084:
7085: #
7086: # Register a command processor. This function is invoked to register a sub
7087: # to process a request. Once registered, the ProcessRequest sub can automatically
7088: # dispatch requests to an appropriate sub, and do the top level validity checking
7089: # as well:
7090: # - Is the keyword recognized.
7091: # - Is the proper client type attempting the request.
7092: # - Is the request encrypted if it has to be.
7093: # Parameters:
7094: # $request_name - Name of the request being registered.
7095: # This is the command request that will match
7096: # against the hash keywords to lookup the information
7097: # associated with the dispatch information.
7098: # $procedure - Reference to a sub to call to process the request.
7099: # All subs get called as follows:
7100: # Procedure($cmd, $tail, $replyfd, $key)
7101: # $cmd - the actual keyword that invoked us.
7102: # $tail - the tail of the request that invoked us.
7103: # $replyfd- File descriptor connected to the client
7104: # $must_encode - True if the request must be encoded to be good.
7105: # $client_ok - True if it's ok for a client to request this.
7106: # $manager_ok - True if it's ok for a manager to request this.
7107: # Side effects:
7108: # - On success, the Dispatcher hash has an entry added for the key $RequestName
7109: # - On failure, the program will die as it's a bad internal bug to try to
7110: # register a duplicate command handler.
7111: #
1.211 albertel 7112: sub register_handler {
1.212 foxr 7113: my ($request_name,$procedure,$must_encode, $client_ok,$manager_ok) = @_;
1.207 foxr 7114:
7115: # Don't allow duplication#
7116:
7117: if (defined $Dispatcher{$request_name}) {
7118: die "Attempting to define a duplicate request handler for $request_name\n";
7119: }
7120: # Build the client type mask:
7121:
7122: my $client_type_mask = 0;
7123: if($client_ok) {
7124: $client_type_mask |= $CLIENT_OK;
7125: }
7126: if($manager_ok) {
7127: $client_type_mask |= $MANAGER_OK;
7128: }
7129:
7130: # Enter the hash:
7131:
7132: my @entry = ($procedure, $must_encode, $client_type_mask);
7133:
7134: $Dispatcher{$request_name} = \@entry;
7135:
7136: }
7137:
7138:
7139: #------------------------------------------------------------------
7140:
7141:
7142:
7143:
1.141 foxr 7144: #
1.96 foxr 7145: # Convert an error return code from lcpasswd to a string value.
7146: #
7147: sub lcpasswdstrerror {
7148: my $ErrorCode = shift;
1.97 foxr 7149: if(($ErrorCode < 0) || ($ErrorCode > $lastpwderror)) {
1.96 foxr 7150: return "lcpasswd Unrecognized error return value ".$ErrorCode;
7151: } else {
1.98 foxr 7152: return $passwderrors[$ErrorCode];
1.96 foxr 7153: }
7154: }
7155:
1.23 harris41 7156: # grabs exception and records it to log before exiting
7157: sub catchexception {
1.27 albertel 7158: my ($error)=@_;
1.25 www 7159: $SIG{'QUIT'}='DEFAULT';
7160: $SIG{__DIE__}='DEFAULT';
1.165 albertel 7161: &status("Catching exception");
1.190 albertel 7162: &logthis("<font color='red'>CRITICAL: "
1.373 albertel 7163: ."ABNORMAL EXIT. Child $$ for server ".$perlvar{'lonHostID'}." died through "
1.27 albertel 7164: ."a crash with this error msg->[$error]</font>");
1.57 www 7165: &logthis('Famous last words: '.$status.' - '.$lastlog);
1.27 albertel 7166: if ($client) { print $client "error: $error\n"; }
1.59 www 7167: $server->close();
1.27 albertel 7168: die($error);
1.23 harris41 7169: }
1.63 www 7170: sub timeout {
1.165 albertel 7171: &status("Handling Timeout");
1.190 albertel 7172: &logthis("<font color='red'>CRITICAL: TIME OUT ".$$."</font>");
1.63 www 7173: &catchexception('Timeout');
7174: }
1.22 harris41 7175: # -------------------------------- Set signal handlers to record abnormal exits
7176:
1.226 foxr 7177:
1.22 harris41 7178: $SIG{'QUIT'}=\&catchexception;
7179: $SIG{__DIE__}=\&catchexception;
7180:
1.81 matthew 7181: # ---------------------------------- Read loncapa_apache.conf and loncapa.conf
1.95 harris41 7182: &status("Read loncapa.conf and loncapa_apache.conf");
7183: my $perlvarref=LONCAPA::Configuration::read_conf('loncapa.conf');
1.141 foxr 7184: %perlvar=%{$perlvarref};
1.80 harris41 7185: undef $perlvarref;
1.19 www 7186:
1.35 harris41 7187: # ----------------------------- Make sure this process is running from user=www
7188: my $wwwid=getpwnam('www');
7189: if ($wwwid!=$<) {
1.134 albertel 7190: my $emailto="$perlvar{'lonAdmEMail'},$perlvar{'lonSysEMail'}";
7191: my $subj="LON: $currenthostid User ID mismatch";
1.550 raeburn 7192: system("echo 'User ID mismatch. lond must be run as user www.' |".
7193: " mail -s '$subj' $emailto > /dev/null");
1.35 harris41 7194: exit 1;
7195: }
7196:
1.19 www 7197: # --------------------------------------------- Check if other instance running
7198:
7199: my $pidfile="$perlvar{'lonDaemons'}/logs/lond.pid";
7200:
7201: if (-e $pidfile) {
7202: my $lfh=IO::File->new("$pidfile");
7203: my $pide=<$lfh>;
7204: chomp($pide);
1.29 harris41 7205: if (kill 0 => $pide) { die "already running"; }
1.19 www 7206: }
1.1 albertel 7207:
7208: # ------------------------------------------------------------- Read hosts file
7209:
7210:
7211:
7212: # establish SERVER socket, bind and listen.
7213: $server = IO::Socket::INET->new(LocalPort => $perlvar{'londPort'},
7214: Type => SOCK_STREAM,
7215: Proto => 'tcp',
1.469 foxr 7216: ReuseAddr => 1,
1.1 albertel 7217: Listen => 10 )
1.29 harris41 7218: or die "making socket: $@\n";
1.1 albertel 7219:
7220: # --------------------------------------------------------- Do global variables
7221:
7222: # global variables
7223:
1.134 albertel 7224: my %children = (); # keys are current child process IDs
1.1 albertel 7225:
7226: sub REAPER { # takes care of dead children
7227: $SIG{CHLD} = \&REAPER;
1.165 albertel 7228: &status("Handling child death");
1.178 foxr 7229: my $pid;
7230: do {
7231: $pid = waitpid(-1,&WNOHANG());
7232: if (defined($children{$pid})) {
7233: &logthis("Child $pid died");
7234: delete($children{$pid});
1.183 albertel 7235: } elsif ($pid > 0) {
1.178 foxr 7236: &logthis("Unknown Child $pid died");
7237: }
7238: } while ( $pid > 0 );
7239: foreach my $child (keys(%children)) {
7240: $pid = waitpid($child,&WNOHANG());
7241: if ($pid > 0) {
7242: &logthis("Child $child - $pid looks like we missed it's death");
7243: delete($children{$pid});
7244: }
1.176 albertel 7245: }
1.165 albertel 7246: &status("Finished Handling child death");
1.1 albertel 7247: }
7248:
7249: sub HUNTSMAN { # signal handler for SIGINT
1.165 albertel 7250: &status("Killing children (INT)");
1.1 albertel 7251: local($SIG{CHLD}) = 'IGNORE'; # we're going to kill our children
7252: kill 'INT' => keys %children;
1.59 www 7253: &logthis("Free socket: ".shutdown($server,2)); # free up socket
1.1 albertel 7254: my $execdir=$perlvar{'lonDaemons'};
7255: unlink("$execdir/logs/lond.pid");
1.190 albertel 7256: &logthis("<font color='red'>CRITICAL: Shutting down</font>");
1.165 albertel 7257: &status("Done killing children");
1.1 albertel 7258: exit; # clean up with dignity
7259: }
7260:
7261: sub HUPSMAN { # signal handler for SIGHUP
7262: local($SIG{CHLD}) = 'IGNORE'; # we're going to kill our children
1.165 albertel 7263: &status("Killing children for restart (HUP)");
1.1 albertel 7264: kill 'INT' => keys %children;
1.59 www 7265: &logthis("Free socket: ".shutdown($server,2)); # free up socket
1.190 albertel 7266: &logthis("<font color='red'>CRITICAL: Restarting</font>");
1.134 albertel 7267: my $execdir=$perlvar{'lonDaemons'};
1.30 harris41 7268: unlink("$execdir/logs/lond.pid");
1.165 albertel 7269: &status("Restarting self (HUP)");
1.1 albertel 7270: exec("$execdir/lond"); # here we go again
7271: }
7272:
1.144 foxr 7273: #
1.148 foxr 7274: # Reload the Apache daemon's state.
1.150 foxr 7275: # This is done by invoking /home/httpd/perl/apachereload
7276: # a setuid perl script that can be root for us to do this job.
1.148 foxr 7277: #
7278: sub ReloadApache {
1.473 raeburn 7279: # --------------------------- Handle case of another apachereload process (locking)
1.474 raeburn 7280: if (&LONCAPA::try_to_lock('/tmp/lock_apachereload')) {
7281: my $execdir = $perlvar{'lonDaemons'};
7282: my $script = $execdir."/apachereload";
7283: system($script);
7284: unlink('/tmp/lock_apachereload'); # Remove the lock file.
7285: }
1.148 foxr 7286: }
7287:
7288: #
1.144 foxr 7289: # Called in response to a USR2 signal.
7290: # - Reread hosts.tab
7291: # - All children connected to hosts that were removed from hosts.tab
7292: # are killed via SIGINT
7293: # - All children connected to previously existing hosts are sent SIGUSR1
7294: # - Our internal hosts hash is updated to reflect the new contents of
7295: # hosts.tab causing connections from hosts added to hosts.tab to
7296: # now be honored.
7297: #
7298: sub UpdateHosts {
1.165 albertel 7299: &status("Reload hosts.tab");
1.147 foxr 7300: logthis('<font color="blue"> Updating connections </font>');
1.148 foxr 7301: #
7302: # The %children hash has the set of IP's we currently have children
7303: # on. These need to be matched against records in the hosts.tab
7304: # Any ip's no longer in the table get killed off they correspond to
7305: # either dropped or changed hosts. Note that the re-read of the table
7306: # will take care of new and changed hosts as connections come into being.
7307:
1.371 albertel 7308: &Apache::lonnet::reset_hosts_info();
1.532 raeburn 7309: my %active;
1.148 foxr 7310:
1.368 albertel 7311: foreach my $child (keys(%children)) {
1.148 foxr 7312: my $childip = $children{$child};
1.374 albertel 7313: if ($childip ne '127.0.0.1'
7314: && !defined(&Apache::lonnet::get_hosts_from_ip($childip))) {
1.149 foxr 7315: logthis('<font color="blue"> UpdateHosts killing child '
7316: ." $child for ip $childip </font>");
1.148 foxr 7317: kill('INT', $child);
1.149 foxr 7318: } else {
1.532 raeburn 7319: $active{$child} = $childip;
1.149 foxr 7320: logthis('<font color="green"> keeping child for ip '
7321: ." $childip (pid=$child) </font>");
1.148 foxr 7322: }
7323: }
1.532 raeburn 7324:
7325: my %oldconf = %secureconf;
7326: my %connchange;
1.555 raeburn 7327: if (lonssl::Read_Connect_Config(\%secureconf,\%perlvar,\%crlchecked) eq 'ok') {
1.545 raeburn 7328: logthis('<font color="blue"> Reloaded SSL connection rules and cleared CRL checking history </font>');
1.532 raeburn 7329: } else {
1.545 raeburn 7330: logthis('<font color="yellow"> Failed to reload SSL connection rules and clear CRL checking history </font>');
1.532 raeburn 7331: }
7332: if ((ref($oldconf{'connfrom'}) eq 'HASH') && (ref($secureconf{'connfrom'}) eq 'HASH')) {
7333: foreach my $type ('dom','intdom','other') {
7334: if ((($oldconf{'connfrom'}{$type} eq 'no') && ($secureconf{'connfrom'}{$type} eq 'req')) ||
7335: (($oldconf{'connfrom'}{$type} eq 'req') && ($secureconf{'connfrom'}{$type} eq 'no'))) {
7336: $connchange{$type} = 1;
7337: }
7338: }
7339: }
7340: if (keys(%connchange)) {
7341: foreach my $child (keys(%active)) {
7342: my $childip = $active{$child};
7343: if ($childip ne '127.0.0.1') {
7344: my $childhostname = gethostbyaddr(Socket::inet_aton($childip),AF_INET);
7345: if ($childhostname ne '') {
7346: my $childlonhost = &Apache::lonnet::get_server_homeID($childhostname);
7347: my ($samedom,$sameinst) = &set_client_info($childlonhost);
7348: if ($samedom) {
7349: if ($connchange{'dom'}) {
7350: logthis('<font color="blue"> UpdateHosts killing child '
7351: ." $child for ip $childip </font>");
7352: kill('INT', $child);
7353: }
7354: } elsif ($sameinst) {
7355: if ($connchange{'intdom'}) {
7356: logthis('<font color="blue"> UpdateHosts killing child '
7357: ." $child for ip $childip </font>");
7358: kill('INT', $child);
7359: }
7360: } else {
7361: if ($connchange{'other'}) {
7362: logthis('<font color="blue"> UpdateHosts killing child '
7363: ." $child for ip $childip </font>");
7364: kill('INT', $child);
7365: }
7366: }
7367: }
7368: }
7369: }
7370: }
1.148 foxr 7371: ReloadApache;
1.165 albertel 7372: &status("Finished reloading hosts.tab");
1.144 foxr 7373: }
7374:
1.57 www 7375: sub checkchildren {
1.165 albertel 7376: &status("Checking on the children (sending signals)");
1.57 www 7377: &initnewstatus();
7378: &logstatus();
7379: &logthis('Going to check on the children');
1.134 albertel 7380: my $docdir=$perlvar{'lonDocRoot'};
1.61 harris41 7381: foreach (sort keys %children) {
1.221 albertel 7382: #sleep 1;
1.57 www 7383: unless (kill 'USR1' => $_) {
7384: &logthis ('Child '.$_.' is dead');
7385: &logstatus($$.' is dead');
1.221 albertel 7386: delete($children{$_});
1.57 www 7387: }
1.61 harris41 7388: }
1.63 www 7389: sleep 5;
1.212 foxr 7390: $SIG{ALRM} = sub { Debug("timeout");
7391: die "timeout"; };
1.113 albertel 7392: $SIG{__DIE__} = 'DEFAULT';
1.165 albertel 7393: &status("Checking on the children (waiting for reports)");
1.63 www 7394: foreach (sort keys %children) {
7395: unless (-e "$docdir/lon-status/londchld/$_.txt") {
1.113 albertel 7396: eval {
7397: alarm(300);
1.63 www 7398: &logthis('Child '.$_.' did not respond');
1.67 albertel 7399: kill 9 => $_;
1.131 albertel 7400: #$emailto="$perlvar{'lonAdmEMail'},$perlvar{'lonSysEMail'}";
7401: #$subj="LON: $currenthostid killed lond process $_";
7402: #my $result=`echo 'Killed lond process $_.' | mailto $emailto -s '$subj' > /dev/null`;
7403: #$execdir=$perlvar{'lonDaemons'};
7404: #$result=`/bin/cp $execdir/logs/lond.log $execdir/logs/lond.log.$_`;
1.221 albertel 7405: delete($children{$_});
1.113 albertel 7406: alarm(0);
7407: }
1.63 www 7408: }
7409: }
1.113 albertel 7410: $SIG{ALRM} = 'DEFAULT';
1.155 albertel 7411: $SIG{__DIE__} = \&catchexception;
1.165 albertel 7412: &status("Finished checking children");
1.221 albertel 7413: &logthis('Finished Checking children');
1.57 www 7414: }
7415:
1.1 albertel 7416: # --------------------------------------------------------------------- Logging
7417:
7418: sub logthis {
7419: my $message=shift;
7420: my $execdir=$perlvar{'lonDaemons'};
7421: my $fh=IO::File->new(">>$execdir/logs/lond.log");
7422: my $now=time;
7423: my $local=localtime($now);
1.58 www 7424: $lastlog=$local.': '.$message;
1.1 albertel 7425: print $fh "$local ($$): $message\n";
7426: }
7427:
1.77 foxr 7428: # ------------------------- Conditional log if $DEBUG true.
7429: sub Debug {
7430: my $message = shift;
7431: if($DEBUG) {
7432: &logthis($message);
7433: }
7434: }
1.161 foxr 7435:
7436: #
7437: # Sub to do replies to client.. this gives a hook for some
7438: # debug tracing too:
7439: # Parameters:
7440: # fd - File open on client.
7441: # reply - Text to send to client.
7442: # request - Original request from client.
7443: #
1.490 droeschl 7444: #NOTE $reply must be terminated by exactly *one* \n. If $reply is a reference
7445: #this is done automatically ($$reply must not contain any \n in this case).
7446: #If $reply is a string the caller has to ensure this.
1.161 foxr 7447: sub Reply {
1.192 foxr 7448: my ($fd, $reply, $request) = @_;
1.387 albertel 7449: if (ref($reply)) {
7450: print $fd $$reply;
7451: print $fd "\n";
7452: if ($DEBUG) { Debug("Request was $request Reply was $$reply"); }
7453: } else {
7454: print $fd $reply;
7455: if ($DEBUG) { Debug("Request was $request Reply was $reply"); }
7456: }
1.212 foxr 7457: $Transactions++;
7458: }
7459:
7460:
7461: #
7462: # Sub to report a failure.
7463: # This function:
7464: # - Increments the failure statistic counters.
7465: # - Invokes Reply to send the error message to the client.
7466: # Parameters:
7467: # fd - File descriptor open on the client
7468: # reply - Reply text to emit.
7469: # request - The original request message (used by Reply
7470: # to debug if that's enabled.
7471: # Implicit outputs:
7472: # $Failures- The number of failures is incremented.
7473: # Reply (invoked here) sends a message to the
7474: # client:
7475: #
7476: sub Failure {
7477: my $fd = shift;
7478: my $reply = shift;
7479: my $request = shift;
7480:
7481: $Failures++;
7482: Reply($fd, $reply, $request); # That's simple eh?
1.161 foxr 7483: }
1.57 www 7484: # ------------------------------------------------------------------ Log status
7485:
7486: sub logstatus {
1.178 foxr 7487: &status("Doing logging");
7488: my $docdir=$perlvar{'lonDocRoot'};
7489: {
7490: my $fh=IO::File->new(">$docdir/lon-status/londchld/$$.txt");
1.200 matthew 7491: print $fh $status."\n".$lastlog."\n".time."\n$keymode";
1.178 foxr 7492: $fh->close();
7493: }
1.221 albertel 7494: &status("Finished $$.txt");
7495: {
7496: open(LOG,">>$docdir/lon-status/londstatus.txt");
7497: flock(LOG,LOCK_EX);
7498: print LOG $$."\t".$clientname."\t".$currenthostid."\t"
7499: .$status."\t".$lastlog."\t $keymode\n";
1.275 albertel 7500: flock(LOG,LOCK_UN);
1.221 albertel 7501: close(LOG);
7502: }
1.178 foxr 7503: &status("Finished logging");
1.57 www 7504: }
7505:
7506: sub initnewstatus {
7507: my $docdir=$perlvar{'lonDocRoot'};
7508: my $fh=IO::File->new(">$docdir/lon-status/londstatus.txt");
1.460 foxr 7509: my $now=time();
1.57 www 7510: my $local=localtime($now);
7511: print $fh "LOND status $local - parent $$\n\n";
1.64 www 7512: opendir(DIR,"$docdir/lon-status/londchld");
1.134 albertel 7513: while (my $filename=readdir(DIR)) {
1.64 www 7514: unlink("$docdir/lon-status/londchld/$filename");
7515: }
7516: closedir(DIR);
1.57 www 7517: }
7518:
7519: # -------------------------------------------------------------- Status setting
7520:
7521: sub status {
7522: my $what=shift;
7523: my $now=time;
7524: my $local=localtime($now);
1.178 foxr 7525: $status=$local.': '.$what;
7526: $0='lond: '.$what.' '.$local;
1.57 www 7527: }
1.11 www 7528:
1.13 www 7529: # -------------------------------------------------------------- Talk to lonsql
7530:
1.234 foxr 7531: sub sql_reply {
1.12 harris41 7532: my ($cmd)=@_;
1.234 foxr 7533: my $answer=&sub_sql_reply($cmd);
7534: if ($answer eq 'con_lost') { $answer=&sub_sql_reply($cmd); }
1.12 harris41 7535: return $answer;
7536: }
7537:
1.234 foxr 7538: sub sub_sql_reply {
1.12 harris41 7539: my ($cmd)=@_;
7540: my $unixsock="mysqlsock";
7541: my $peerfile="$perlvar{'lonSockDir'}/$unixsock";
7542: my $sclient=IO::Socket::UNIX->new(Peer =>"$peerfile",
7543: Type => SOCK_STREAM,
7544: Timeout => 10)
7545: or return "con_lost";
1.319 www 7546: print $sclient "$cmd:$currentdomainid\n";
1.12 harris41 7547: my $answer=<$sclient>;
7548: chomp($answer);
7549: if (!$answer) { $answer="con_lost"; }
7550: return $answer;
7551: }
7552:
1.1 albertel 7553: # --------------------------------------- Is this the home server of an author?
1.11 www 7554:
1.1 albertel 7555: sub ishome {
7556: my $author=shift;
7557: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
7558: my ($udom,$uname)=split(/\//,$author);
7559: my $proname=propath($udom,$uname);
7560: if (-e $proname) {
7561: return 'owner';
7562: } else {
7563: return 'not_owner';
7564: }
7565: }
7566:
7567: # ======================================================= Continue main program
7568: # ---------------------------------------------------- Fork once and dissociate
7569:
1.134 albertel 7570: my $fpid=fork;
1.1 albertel 7571: exit if $fpid;
1.29 harris41 7572: die "Couldn't fork: $!" unless defined ($fpid);
1.1 albertel 7573:
1.29 harris41 7574: POSIX::setsid() or die "Can't start new session: $!";
1.1 albertel 7575:
7576: # ------------------------------------------------------- Write our PID on disk
7577:
1.134 albertel 7578: my $execdir=$perlvar{'lonDaemons'};
1.1 albertel 7579: open (PIDSAVE,">$execdir/logs/lond.pid");
7580: print PIDSAVE "$$\n";
7581: close(PIDSAVE);
1.190 albertel 7582: &logthis("<font color='red'>CRITICAL: ---------- Starting ----------</font>");
1.57 www 7583: &status('Starting');
1.1 albertel 7584:
1.106 foxr 7585:
1.1 albertel 7586:
7587: # ----------------------------------------------------- Install signal handlers
7588:
1.57 www 7589:
1.1 albertel 7590: $SIG{CHLD} = \&REAPER;
7591: $SIG{INT} = $SIG{TERM} = \&HUNTSMAN;
7592: $SIG{HUP} = \&HUPSMAN;
1.57 www 7593: $SIG{USR1} = \&checkchildren;
1.144 foxr 7594: $SIG{USR2} = \&UpdateHosts;
1.106 foxr 7595:
1.148 foxr 7596: # Read the host hashes:
1.368 albertel 7597: &Apache::lonnet::load_hosts_tab();
1.447 raeburn 7598: my %iphost = &Apache::lonnet::get_iphost(1);
1.106 foxr 7599:
1.480 raeburn 7600: $dist=`$perlvar{'lonDaemons'}/distprobe`;
1.286 albertel 7601:
1.471 raeburn 7602: my $arch = `uname -i`;
1.475 raeburn 7603: chomp($arch);
1.471 raeburn 7604: if ($arch eq 'unknown') {
7605: $arch = `uname -m`;
1.475 raeburn 7606: chomp($arch);
1.471 raeburn 7607: }
7608:
1.555 raeburn 7609: unless (lonssl::Read_Connect_Config(\%secureconf,\%perlvar,\%crlchecked) eq 'ok') {
1.532 raeburn 7610: &logthis('<font color="blue">No connectionrules table. Will fallback to loncapa.conf</font>');
7611: }
7612:
1.106 foxr 7613: # --------------------------------------------------------------
7614: # Accept connections. When a connection comes in, it is validated
7615: # and if good, a child process is created to process transactions
7616: # along the connection.
7617:
1.1 albertel 7618: while (1) {
1.165 albertel 7619: &status('Starting accept');
1.106 foxr 7620: $client = $server->accept() or next;
1.165 albertel 7621: &status('Accepted '.$client.' off to spawn');
1.386 albertel 7622: make_new_child($client);
1.165 albertel 7623: &status('Finished spawning');
1.1 albertel 7624: }
7625:
1.212 foxr 7626: sub make_new_child {
7627: my $pid;
7628: # my $cipher; # Now global
7629: my $sigset;
1.178 foxr 7630:
1.212 foxr 7631: $client = shift;
7632: &status('Starting new child '.$client);
7633: &logthis('<font color="green"> Attempting to start child ('.$client.
7634: ")</font>");
7635: # block signal for fork
7636: $sigset = POSIX::SigSet->new(SIGINT);
7637: sigprocmask(SIG_BLOCK, $sigset)
7638: or die "Can't block SIGINT for fork: $!\n";
1.178 foxr 7639:
1.212 foxr 7640: die "fork: $!" unless defined ($pid = fork);
1.178 foxr 7641:
1.212 foxr 7642: $client->sockopt(SO_KEEPALIVE, 1); # Enable monitoring of
7643: # connection liveness.
1.178 foxr 7644:
1.212 foxr 7645: #
7646: # Figure out who we're talking to so we can record the peer in
7647: # the pid hash.
7648: #
7649: my $caller = getpeername($client);
7650: my ($port,$iaddr);
7651: if (defined($caller) && length($caller) > 0) {
7652: ($port,$iaddr)=unpack_sockaddr_in($caller);
7653: } else {
7654: &logthis("Unable to determine who caller was, getpeername returned nothing");
7655: }
7656: if (defined($iaddr)) {
7657: $clientip = inet_ntoa($iaddr);
7658: Debug("Connected with $clientip");
7659: } else {
7660: &logthis("Unable to determine clientip");
7661: $clientip='Unavailable';
7662: }
7663:
7664: if ($pid) {
7665: # Parent records the child's birth and returns.
7666: sigprocmask(SIG_UNBLOCK, $sigset)
7667: or die "Can't unblock SIGINT for fork: $!\n";
7668: $children{$pid} = $clientip;
7669: &status('Started child '.$pid);
1.462 foxr 7670: close($client);
1.212 foxr 7671: return;
7672: } else {
7673: # Child can *not* return from this subroutine.
7674: $SIG{INT} = 'DEFAULT'; # make SIGINT kill us as it did before
7675: $SIG{CHLD} = 'DEFAULT'; #make this default so that pwauth returns
7676: #don't get intercepted
7677: $SIG{USR1}= \&logstatus;
7678: $SIG{ALRM}= \&timeout;
1.468 foxr 7679: #
7680: # Block sigpipe as it gets thrownon socket disconnect and we want to
7681: # deal with that as a read faiure instead.
7682: #
7683: my $blockset = POSIX::SigSet->new(SIGPIPE);
7684: sigprocmask(SIG_BLOCK, $blockset);
7685:
1.212 foxr 7686: $lastlog='Forked ';
7687: $status='Forked';
1.178 foxr 7688:
1.212 foxr 7689: # unblock signals
7690: sigprocmask(SIG_UNBLOCK, $sigset)
7691: or die "Can't unblock SIGINT for fork: $!\n";
1.178 foxr 7692:
1.212 foxr 7693: # my $tmpsnum=0; # Now global
7694: #---------------------------------------------------- kerberos 5 initialization
7695: &Authen::Krb5::init_context();
1.511 raeburn 7696:
7697: my $no_ets;
1.559 raeburn 7698: if ($dist =~ /^(?:centos|rhes|scientific|oracle)(\d+)$/) {
1.511 raeburn 7699: if ($1 >= 7) {
7700: $no_ets = 1;
7701: }
7702: } elsif ($dist =~ /^suse(\d+\.\d+)$/) {
7703: if (($1 eq '9.3') || ($1 >= 12.2)) {
7704: $no_ets = 1;
7705: }
1.514 raeburn 7706: } elsif ($dist =~ /^sles(\d+)$/) {
7707: if ($1 > 11) {
7708: $no_ets = 1;
7709: }
1.511 raeburn 7710: } elsif ($dist =~ /^fedora(\d+)$/) {
7711: if ($1 < 7) {
7712: $no_ets = 1;
7713: }
7714: }
7715: unless ($no_ets) {
1.286 albertel 7716: &Authen::Krb5::init_ets();
7717: }
1.209 albertel 7718:
1.212 foxr 7719: &status('Accepted connection');
7720: # =============================================================================
7721: # do something with the connection
7722: # -----------------------------------------------------------------------------
7723: # see if we know client and 'check' for spoof IP by ineffective challenge
1.178 foxr 7724:
1.278 albertel 7725: my $outsideip=$clientip;
7726: if ($clientip eq '127.0.0.1') {
1.368 albertel 7727: $outsideip=&Apache::lonnet::get_host_ip($perlvar{'lonHostID'});
1.278 albertel 7728: }
1.412 foxr 7729: &ReadManagerTable();
1.368 albertel 7730: my $clientrec=defined(&Apache::lonnet::get_hosts_from_ip($outsideip));
1.278 albertel 7731: my $ismanager=($managers{$outsideip} ne undef);
1.432 raeburn 7732: $clientname = "[unknown]";
1.212 foxr 7733: if($clientrec) { # Establish client type.
7734: $ConnectionType = "client";
1.368 albertel 7735: $clientname = (&Apache::lonnet::get_hosts_from_ip($outsideip))[-1];
1.212 foxr 7736: if($ismanager) {
7737: $ConnectionType = "both";
7738: }
7739: } else {
7740: $ConnectionType = "manager";
1.278 albertel 7741: $clientname = $managers{$outsideip};
1.212 foxr 7742: }
1.556 raeburn 7743: my $clientok;
1.178 foxr 7744:
1.212 foxr 7745: if ($clientrec || $ismanager) {
7746: &status("Waiting for init from $clientip $clientname");
7747: &logthis('<font color="yellow">INFO: Connection, '.
7748: $clientip.
7749: " ($clientname) connection type = $ConnectionType </font>" );
7750: &status("Connecting $clientip ($clientname))");
7751: my $remotereq=<$client>;
7752: chomp($remotereq);
7753: Debug("Got init: $remotereq");
1.337 albertel 7754:
1.212 foxr 7755: if ($remotereq =~ /^init/) {
7756: &sethost("sethost:$perlvar{'lonHostID'}");
7757: #
7758: # If the remote is attempting a local init... give that a try:
7759: #
1.432 raeburn 7760: (my $i, my $inittype, $clientversion) = split(/:/, $remotereq);
1.492 droeschl 7761: # For LON-CAPA 2.9, the client session will have sent its LON-CAPA
7762: # version when initiating the connection. For LON-CAPA 2.8 and older,
7763: # the version is retrieved from the global %loncaparevs in lonnet.pm.
1.494 droeschl 7764: # $clientversion contains path to keyfile if $inittype eq 'local'
7765: # it's overridden below in this case
1.492 droeschl 7766: $clientversion ||= $Apache::lonnet::loncaparevs{$clientname};
1.209 albertel 7767:
1.212 foxr 7768: # If the connection type is ssl, but I didn't get my
7769: # certificate files yet, then I'll drop back to
7770: # insecure (if allowed).
1.532 raeburn 7771:
7772: if ($inittype eq "ssl") {
7773: my $context;
7774: if ($clientsamedom) {
7775: $context = 'dom';
7776: if ($secureconf{'connfrom'}{'dom'} eq 'no') {
7777: $inittype = "";
7778: }
7779: } elsif ($clientsameinst) {
7780: $context = 'intdom';
7781: if ($secureconf{'connfrom'}{'intdom'} eq 'no') {
7782: $inittype = "";
7783: }
7784: } else {
7785: $context = 'other';
7786: if ($secureconf{'connfrom'}{'other'} eq 'no') {
7787: $inittype = "";
7788: }
7789: }
7790: if ($inittype eq '') {
7791: &logthis("<font color=\"blue\"> Domain config set "
7792: ."to no ssl for $clientname (context: $context)"
7793: ." -- trying insecure auth</font>");
7794: }
7795: }
7796:
1.212 foxr 7797: if($inittype eq "ssl") {
7798: my ($ca, $cert) = lonssl::CertificateFile;
7799: my $kfile = lonssl::KeyFile;
7800: if((!$ca) ||
7801: (!$cert) ||
7802: (!$kfile)) {
7803: $inittype = ""; # This forces insecure attempt.
7804: &logthis("<font color=\"blue\"> Certificates not "
7805: ."installed -- trying insecure auth</font>");
1.224 foxr 7806: } else { # SSL certificates are in place so
1.212 foxr 7807: } # Leave the inittype alone.
7808: }
7809:
7810: if($inittype eq "local") {
1.432 raeburn 7811: $clientversion = $perlvar{'lonVersion'};
1.212 foxr 7812: my $key = LocalConnection($client, $remotereq);
7813: if($key) {
7814: Debug("Got local key $key");
7815: $clientok = 1;
7816: my $cipherkey = pack("H32", $key);
7817: $cipher = new IDEA($cipherkey);
7818: print $client "ok:local\n";
1.442 www 7819: &logthis('<font color="green">'
1.212 foxr 7820: . "Successful local authentication </font>");
7821: $keymode = "local"
1.178 foxr 7822: } else {
1.212 foxr 7823: Debug("Failed to get local key");
7824: $clientok = 0;
7825: shutdown($client, 3);
7826: close $client;
1.178 foxr 7827: }
1.212 foxr 7828: } elsif ($inittype eq "ssl") {
1.532 raeburn 7829: my $key = SSLConnection($client,$clientname);
1.212 foxr 7830: if ($key) {
7831: $clientok = 1;
7832: my $cipherkey = pack("H32", $key);
7833: $cipher = new IDEA($cipherkey);
7834: &logthis('<font color="green">'
7835: ."Successfull ssl authentication with $clientname </font>");
7836: $keymode = "ssl";
7837:
1.178 foxr 7838: } else {
1.212 foxr 7839: $clientok = 0;
7840: close $client;
1.178 foxr 7841: }
1.212 foxr 7842:
7843: } else {
7844: my $ok = InsecureConnection($client);
7845: if($ok) {
7846: $clientok = 1;
7847: &logthis('<font color="green">'
7848: ."Successful insecure authentication with $clientname </font>");
7849: print $client "ok\n";
7850: $keymode = "insecure";
1.178 foxr 7851: } else {
1.212 foxr 7852: &logthis('<font color="yellow">'
7853: ."Attempted insecure connection disallowed </font>");
7854: close $client;
7855: $clientok = 0;
1.178 foxr 7856: }
7857: }
1.212 foxr 7858: } else {
7859: &logthis(
7860: "<font color='blue'>WARNING: "
7861: ."$clientip failed to initialize: >$remotereq< </font>");
7862: &status('No init '.$clientip);
7863: }
7864: } else {
7865: &logthis(
7866: "<font color='blue'>WARNING: Unknown client $clientip</font>");
7867: &status('Hung up on '.$clientip);
7868: }
7869:
7870: if ($clientok) {
7871: # ---------------- New known client connecting, could mean machine online again
1.368 albertel 7872: if (&Apache::lonnet::get_host_ip($currenthostid) ne $clientip
1.367 albertel 7873: && $clientip ne '127.0.0.1') {
1.375 albertel 7874: &Apache::lonnet::reconlonc($clientname);
1.212 foxr 7875: }
7876: &logthis("<font color='green'>Established connection: $clientname</font>");
7877: &status('Will listen to '.$clientname);
7878: # ------------------------------------------------------------ Process requests
7879: my $keep_going = 1;
7880: my $user_input;
1.556 raeburn 7881:
1.212 foxr 7882: while(($user_input = get_request) && $keep_going) {
7883: alarm(120);
7884: Debug("Main: Got $user_input\n");
7885: $keep_going = &process_request($user_input);
1.178 foxr 7886: alarm(0);
1.212 foxr 7887: &status('Listening to '.$clientname." ($keymode)");
1.161 foxr 7888: }
1.212 foxr 7889:
1.59 www 7890: # --------------------------------------------- client unknown or fishy, refuse
1.212 foxr 7891: } else {
1.161 foxr 7892: print $client "refused\n";
7893: $client->close();
1.190 albertel 7894: &logthis("<font color='blue'>WARNING: "
1.161 foxr 7895: ."Rejected client $clientip, closing connection</font>");
7896: }
1.525 raeburn 7897: }
1.161 foxr 7898:
1.1 albertel 7899: # =============================================================================
1.161 foxr 7900:
1.190 albertel 7901: &logthis("<font color='red'>CRITICAL: "
1.161 foxr 7902: ."Disconnect from $clientip ($clientname)</font>");
7903:
7904:
7905: # this exit is VERY important, otherwise the child will become
7906: # a producer of more and more children, forking yourself into
7907: # process death.
7908: exit;
1.106 foxr 7909:
1.78 foxr 7910: }
1.532 raeburn 7911:
7912: #
7913: # Used to determine if a particular client is from the same domain
1.556 raeburn 7914: # as the current server, or from the same internet domain, and
7915: # also if the client can host sessions for the domain's users.
7916: # A hash is populated with keys set to commands sent by the client
7917: # which may not be executed for this domain.
1.532 raeburn 7918: #
7919: # Optional input -- the client to check for domain and internet domain.
7920: # If not specified, defaults to the package variable: $clientname
7921: #
7922: # If called in array context will not set package variables, but will
7923: # instead return an array of two values - (a) true if client is in the
1.556 raeburn 7924: # same domain as the server, and (b) true if client is in the same
7925: # internet domain.
1.532 raeburn 7926: #
7927: # If called in scalar context, sets package variables for current client:
7928: #
1.556 raeburn 7929: # $clienthomedom - LonCAPA domain of homeID for client.
7930: # $clientsamedom - LonCAPA domain same for this host and client.
7931: # $clientintdom - LonCAPA "internet domain" for client.
7932: # $clientsameinst - LonCAPA "internet domain" same for this host & client.
7933: # $clientremoteok - If current domain permits hosting on this client: 1
7934: # %clientprohibited - Commands prohibited for domain's users for this client.
7935: #
7936: # if the host and client have the same "internet domain", then the value
7937: # of $clientremoteok is not used, and no commands are prohibited.
1.532 raeburn 7938: #
7939: # returns 1 to indicate package variables have been set for current client.
7940: #
7941:
7942: sub set_client_info {
7943: my ($lonhost) = @_;
7944: $lonhost ||= $clientname;
7945: my $clienthost = &Apache::lonnet::hostname($lonhost);
7946: my $clientserverhomeID = &Apache::lonnet::get_server_homeID($clienthost);
7947: my $homedom = &Apache::lonnet::host_domain($clientserverhomeID);
7948: my $samedom = 0;
1.557 raeburn 7949: if ($perlvar{'lonDefDomain'} eq $homedom) {
1.532 raeburn 7950: $samedom = 1;
7951: }
7952: my $intdom = &Apache::lonnet::internet_dom($clientserverhomeID);
7953: my $sameinst = 0;
7954: if ($intdom ne '') {
7955: my $internet_names = &Apache::lonnet::get_internet_names($currenthostid);
7956: if (ref($internet_names) eq 'ARRAY') {
7957: if (grep(/^\Q$intdom\E$/,@{$internet_names})) {
7958: $sameinst = 1;
7959: }
7960: }
7961: }
7962: if (wantarray) {
7963: return ($samedom,$sameinst);
7964: } else {
7965: $clienthomedom = $homedom;
7966: $clientsamedom = $samedom;
7967: $clientintdom = $intdom;
7968: $clientsameinst = $sameinst;
1.556 raeburn 7969: if ($clientsameinst) {
7970: undef($clientremoteok);
7971: undef(%clientprohibited);
7972: } else {
7973: $clientremoteok = &get_remote_hostable($currentdomainid);
7974: %clientprohibited = &get_prohibited($currentdomainid);
7975: }
1.532 raeburn 7976: return 1;
7977: }
7978: }
7979:
1.261 foxr 7980: #
7981: # Determine if a user is an author for the indicated domain.
7982: #
7983: # Parameters:
7984: # domain - domain to check in .
7985: # user - Name of user to check.
7986: #
7987: # Return:
7988: # 1 - User is an author for domain.
7989: # 0 - User is not an author for domain.
7990: sub is_author {
7991: my ($domain, $user) = @_;
7992:
7993: &Debug("is_author: $user @ $domain");
7994:
7995: my $hashref = &tie_user_hash($domain, $user, "roles",
7996: &GDBM_READER());
7997:
7998: # Author role should show up as a key /domain/_au
1.78 foxr 7999:
1.321 albertel 8000: my $value;
1.487 foxr 8001: if ($hashref) {
1.78 foxr 8002:
1.487 foxr 8003: my $key = "/$domain/_au";
8004: if (defined($hashref)) {
8005: $value = $hashref->{$key};
8006: if(!untie_user_hash($hashref)) {
8007: return 'error: ' . ($!+0)." untie (GDBM) Failed";
8008: }
8009: }
8010:
8011: if(defined($value)) {
8012: &Debug("$user @ $domain is an author");
8013: }
8014: } else {
8015: return 'error: '.($!+0)." tie (GDBM) Failed";
1.261 foxr 8016: }
8017:
8018: return defined($value);
8019: }
1.78 foxr 8020: #
8021: # Checks to see if the input roleput request was to set
1.482 www 8022: # an author role. If so, creates construction space
1.78 foxr 8023: # Parameters:
8024: # request - The request sent to the rolesput subchunk.
8025: # We're looking for /domain/_au
8026: # domain - The domain in which the user is having roles doctored.
8027: # user - Name of the user for which the role is being put.
8028: # authtype - The authentication type associated with the user.
8029: #
1.289 albertel 8030: sub manage_permissions {
1.192 foxr 8031: my ($request, $domain, $user, $authtype) = @_;
1.78 foxr 8032: # See if the request is of the form /$domain/_au
1.289 albertel 8033: if($request =~ /^(\/\Q$domain\E\/_au)$/) { # It's an author rolesput...
1.484 raeburn 8034: my $path=$perlvar{'lonDocRoot'}."/priv/$domain";
1.482 www 8035: unless (-e $path) {
8036: mkdir($path);
8037: }
8038: unless (-e $path.'/'.$user) {
8039: mkdir($path.'/'.$user);
8040: }
1.78 foxr 8041: }
8042: }
1.222 foxr 8043:
8044:
8045: #
8046: # Return the full path of a user password file, whether it exists or not.
8047: # Parameters:
8048: # domain - Domain in which the password file lives.
8049: # user - name of the user.
8050: # Returns:
8051: # Full passwd path:
8052: #
8053: sub password_path {
8054: my ($domain, $user) = @_;
1.264 albertel 8055: return &propath($domain, $user).'/passwd';
1.222 foxr 8056: }
8057:
8058: # Password Filename
8059: # Returns the path to a passwd file given domain and user... only if
8060: # it exists.
8061: # Parameters:
8062: # domain - Domain in which to search.
8063: # user - username.
8064: # Returns:
8065: # - If the password file exists returns its path.
8066: # - If the password file does not exist, returns undefined.
8067: #
8068: sub password_filename {
8069: my ($domain, $user) = @_;
8070:
8071: Debug ("PasswordFilename called: dom = $domain user = $user");
8072:
8073: my $path = &password_path($domain, $user);
8074: Debug("PasswordFilename got path: $path");
8075: if(-e $path) {
8076: return $path;
8077: } else {
8078: return undef;
8079: }
8080: }
8081:
8082: #
8083: # Rewrite the contents of the user's passwd file.
8084: # Parameters:
8085: # domain - domain of the user.
8086: # name - User's name.
8087: # contents - New contents of the file.
1.533 raeburn 8088: # saveold - (optional). If true save old file in a passwd.bak file.
1.222 foxr 8089: # Returns:
8090: # 0 - Failed.
8091: # 1 - Success.
8092: #
8093: sub rewrite_password_file {
1.533 raeburn 8094: my ($domain, $user, $contents, $saveold) = @_;
1.222 foxr 8095:
8096: my $file = &password_filename($domain, $user);
8097: if (defined $file) {
1.533 raeburn 8098: if ($saveold) {
8099: my $bakfile = $file.'.bak';
8100: if (CopyFile($file,$bakfile)) {
8101: chmod(0400,$bakfile);
8102: &logthis("Old password saved in passwd.bak for internally authenticated user: $user:$domain");
8103: } else {
8104: &logthis("Failed to save old password in passwd.bak for internally authenticated user: $user:$domain");
8105: }
8106: }
1.222 foxr 8107: my $pf = IO::File->new(">$file");
8108: if($pf) {
8109: print $pf "$contents\n";
8110: return 1;
8111: } else {
8112: return 0;
8113: }
8114: } else {
8115: return 0;
8116: }
8117:
8118: }
8119:
1.78 foxr 8120: #
1.222 foxr 8121: # get_auth_type - Determines the authorization type of a user in a domain.
1.78 foxr 8122:
8123: # Returns the authorization type or nouser if there is no such user.
8124: #
1.436 raeburn 8125: sub get_auth_type {
1.192 foxr 8126: my ($domain, $user) = @_;
1.78 foxr 8127:
1.222 foxr 8128: Debug("get_auth_type( $domain, $user ) \n");
1.78 foxr 8129: my $proname = &propath($domain, $user);
8130: my $passwdfile = "$proname/passwd";
8131: if( -e $passwdfile ) {
8132: my $pf = IO::File->new($passwdfile);
8133: my $realpassword = <$pf>;
8134: chomp($realpassword);
1.79 foxr 8135: Debug("Password info = $realpassword\n");
1.78 foxr 8136: my ($authtype, $contentpwd) = split(/:/, $realpassword);
1.79 foxr 8137: Debug("Authtype = $authtype, content = $contentpwd\n");
1.259 raeburn 8138: return "$authtype:$contentpwd";
1.224 foxr 8139: } else {
1.79 foxr 8140: Debug("Returning nouser");
1.78 foxr 8141: return "nouser";
8142: }
1.1 albertel 8143: }
8144:
1.220 foxr 8145: #
8146: # Validate a user given their domain, name and password. This utility
8147: # function is used by both AuthenticateHandler and ChangePasswordHandler
8148: # to validate the login credentials of a user.
8149: # Parameters:
8150: # $domain - The domain being logged into (this is required due to
8151: # the capability for multihomed systems.
8152: # $user - The name of the user being validated.
8153: # $password - The user's propoposed password.
8154: #
8155: # Returns:
8156: # 1 - The domain,user,pasword triplet corresponds to a valid
8157: # user.
8158: # 0 - The domain,user,password triplet is not a valid user.
8159: #
8160: sub validate_user {
1.396 raeburn 8161: my ($domain, $user, $password, $checkdefauth) = @_;
1.220 foxr 8162:
8163: # Why negative ~pi you may well ask? Well this function is about
8164: # authentication, and therefore very important to get right.
8165: # I've initialized the flag that determines whether or not I've
8166: # validated correctly to a value it's not supposed to get.
8167: # At the end of this function. I'll ensure that it's not still that
8168: # value so we don't just wind up returning some accidental value
8169: # as a result of executing an unforseen code path that
1.249 foxr 8170: # did not set $validated. At the end of valid execution paths,
8171: # validated shoule be 1 for success or 0 for failuer.
1.220 foxr 8172:
8173: my $validated = -3.14159;
8174:
8175: # How we authenticate is determined by the type of authentication
8176: # the user has been assigned. If the authentication type is
8177: # "nouser", the user does not exist so we will return 0.
8178:
1.222 foxr 8179: my $contents = &get_auth_type($domain, $user);
1.220 foxr 8180: my ($howpwd, $contentpwd) = split(/:/, $contents);
8181:
8182: my $null = pack("C",0); # Used by kerberos auth types.
8183:
1.395 raeburn 8184: if ($howpwd eq 'nouser') {
1.396 raeburn 8185: if ($checkdefauth) {
8186: my %domdefaults = &Apache::lonnet::get_domain_defaults($domain);
8187: if ($domdefaults{'auth_def'} eq 'localauth') {
8188: $howpwd = $domdefaults{'auth_def'};
8189: $contentpwd = $domdefaults{'auth_arg_def'};
8190: } elsif ((($domdefaults{'auth_def'} eq 'krb4') ||
8191: ($domdefaults{'auth_def'} eq 'krb5')) &&
8192: ($domdefaults{'auth_arg_def'} ne '')) {
8193: $howpwd = $domdefaults{'auth_def'};
8194: $contentpwd = $domdefaults{'auth_arg_def'};
8195: }
1.395 raeburn 8196: }
1.533 raeburn 8197: }
1.220 foxr 8198: if ($howpwd ne 'nouser') {
8199: if($howpwd eq "internal") { # Encrypted is in local password file.
1.518 raeburn 8200: if (length($contentpwd) == 13) {
8201: $validated = (crypt($password,$contentpwd) eq $contentpwd);
8202: if ($validated) {
1.533 raeburn 8203: my %domdefaults = &Apache::lonnet::get_domain_defaults($domain);
8204: if ($domdefaults{'intauth_switch'}) {
8205: my $ncpass = &hash_passwd($domain,$password);
8206: my $saveold;
8207: if ($domdefaults{'intauth_switch'} == 2) {
8208: $saveold = 1;
8209: }
8210: if (&rewrite_password_file($domain,$user,"$howpwd:$ncpass",$saveold)) {
8211: &update_passwd_history($user,$domain,$howpwd,'conversion');
8212: &logthis("Validated password hashed with bcrypt for $user:$domain");
8213: }
1.518 raeburn 8214: }
8215: }
8216: } else {
1.533 raeburn 8217: $validated = &check_internal_passwd($password,$contentpwd,$domain,$user);
1.518 raeburn 8218: }
1.220 foxr 8219: }
8220: elsif ($howpwd eq "unix") { # User is a normal unix user.
8221: $contentpwd = (getpwnam($user))[1];
8222: if($contentpwd) {
8223: if($contentpwd eq 'x') { # Shadow password file...
8224: my $pwauth_path = "/usr/local/sbin/pwauth";
8225: open PWAUTH, "|$pwauth_path" or
8226: die "Cannot invoke authentication";
8227: print PWAUTH "$user\n$password\n";
8228: close PWAUTH;
8229: $validated = ! $?;
8230:
8231: } else { # Passwords in /etc/passwd.
8232: $validated = (crypt($password,
8233: $contentpwd) eq $contentpwd);
8234: }
8235: } else {
8236: $validated = 0;
8237: }
1.439 raeburn 8238: } elsif ($howpwd eq "krb4") { # user is in kerberos 4 auth. domain.
8239: my $checkwithkrb5 = 0;
8240: if ($dist =~/^fedora(\d+)$/) {
8241: if ($1 > 11) {
8242: $checkwithkrb5 = 1;
8243: }
8244: } elsif ($dist =~ /^suse([\d.]+)$/) {
8245: if ($1 > 11.1) {
8246: $checkwithkrb5 = 1;
8247: }
8248: }
8249: if ($checkwithkrb5) {
8250: $validated = &krb5_authen($password,$null,$user,$contentpwd);
8251: } else {
8252: $validated = &krb4_authen($password,$null,$user,$contentpwd);
8253: }
1.224 foxr 8254: } elsif ($howpwd eq "krb5") { # User is in kerberos 5 auth. domain.
1.439 raeburn 8255: $validated = &krb5_authen($password,$null,$user,$contentpwd);
1.224 foxr 8256: } elsif ($howpwd eq "localauth") {
1.220 foxr 8257: # Authenticate via installation specific authentcation method:
8258: $validated = &localauth::localauth($user,
8259: $password,
1.353 albertel 8260: $contentpwd,
8261: $domain);
1.358 albertel 8262: if ($validated < 0) {
1.357 albertel 8263: &logthis("localauth for $contentpwd $user:$domain returned a $validated");
8264: $validated = 0;
8265: }
1.224 foxr 8266: } else { # Unrecognized auth is also bad.
1.220 foxr 8267: $validated = 0;
8268: }
8269: } else {
8270: $validated = 0;
8271: }
8272: #
8273: # $validated has the correct stat of the authentication:
8274: #
8275:
8276: unless ($validated != -3.14159) {
1.249 foxr 8277: # I >really really< want to know if this happens.
8278: # since it indicates that user authentication is badly
8279: # broken in some code path.
8280: #
8281: die "ValidateUser - failed to set the value of validated $domain, $user $password";
1.220 foxr 8282: }
8283: return $validated;
8284: }
8285:
1.518 raeburn 8286: sub check_internal_passwd {
1.533 raeburn 8287: my ($plainpass,$stored,$domain,$user) = @_;
1.518 raeburn 8288: my (undef,$method,@rest) = split(/!/,$stored);
1.533 raeburn 8289: if ($method eq 'bcrypt') {
1.518 raeburn 8290: my $result = &hash_passwd($domain,$plainpass,@rest);
8291: if ($result ne $stored) {
8292: return 0;
8293: }
1.533 raeburn 8294: my %domdefaults = &Apache::lonnet::get_domain_defaults($domain);
8295: if ($domdefaults{'intauth_check'}) {
8296: # Upgrade to a larger number of rounds if necessary
8297: my $defaultcost = $domdefaults{'intauth_cost'};
8298: if (($defaultcost eq '') || ($defaultcost =~ /D/)) {
8299: $defaultcost = 10;
8300: }
8301: if (int($rest[0])<int($defaultcost)) {
8302: if ($domdefaults{'intauth_check'} == 1) {
8303: my $ncpass = &hash_passwd($domain,$plainpass);
8304: if (&rewrite_password_file($domain,$user,"internal:$ncpass")) {
8305: &update_passwd_history($user,$domain,'internal','update cost');
8306: &logthis("Validated password hashed with bcrypt for $user:$domain");
8307: }
8308: return 1;
8309: } elsif ($domdefaults{'intauth_check'} == 2) {
8310: return 0;
8311: }
8312: }
8313: } else {
8314: return 1;
1.518 raeburn 8315: }
8316: }
8317: return 0;
8318: }
8319:
8320: sub get_last_authchg {
8321: my ($domain,$user) = @_;
8322: my $lastmod;
8323: my $logname = &propath($domain,$user).'/passwd.log';
8324: if (-e "$logname") {
8325: $lastmod = (stat("$logname"))[9];
8326: }
8327: return $lastmod;
8328: }
8329:
1.439 raeburn 8330: sub krb4_authen {
8331: my ($password,$null,$user,$contentpwd) = @_;
8332: my $validated = 0;
8333: if (!($password =~ /$null/) ) { # Null password not allowed.
8334: eval {
8335: require Authen::Krb4;
8336: };
8337: if (!$@) {
8338: my $k4error = &Authen::Krb4::get_pw_in_tkt($user,
8339: "",
8340: $contentpwd,,
8341: 'krbtgt',
8342: $contentpwd,
8343: 1,
8344: $password);
8345: if(!$k4error) {
8346: $validated = 1;
8347: } else {
8348: $validated = 0;
8349: &logthis('krb4: '.$user.', '.$contentpwd.', '.
8350: &Authen::Krb4::get_err_txt($Authen::Krb4::error));
8351: }
8352: } else {
8353: $validated = krb5_authen($password,$null,$user,$contentpwd);
8354: }
8355: }
8356: return $validated;
8357: }
8358:
8359: sub krb5_authen {
8360: my ($password,$null,$user,$contentpwd) = @_;
8361: my $validated = 0;
8362: if(!($password =~ /$null/)) { # Null password not allowed.
8363: my $krbclient = &Authen::Krb5::parse_name($user.'@'
8364: .$contentpwd);
8365: my $krbservice = "krbtgt/".$contentpwd."\@".$contentpwd;
8366: my $krbserver = &Authen::Krb5::parse_name($krbservice);
8367: my $credentials= &Authen::Krb5::cc_default();
8368: $credentials->initialize(&Authen::Krb5::parse_name($user.'@'
8369: .$contentpwd));
8370: my $krbreturn;
8371: if (exists(&Authen::Krb5::get_init_creds_password)) {
8372: $krbreturn =
8373: &Authen::Krb5::get_init_creds_password($krbclient,$password,
8374: $krbservice);
8375: $validated = (ref($krbreturn) eq 'Authen::Krb5::Creds');
8376: } else {
8377: $krbreturn =
8378: &Authen::Krb5::get_in_tkt_with_password($krbclient,$krbserver,
8379: $password,$credentials);
8380: $validated = ($krbreturn == 1);
8381: }
8382: if (!$validated) {
8383: &logthis('krb5: '.$user.', '.$contentpwd.', '.
8384: &Authen::Krb5::error());
8385: }
8386: }
8387: return $validated;
8388: }
1.220 foxr 8389:
1.84 albertel 8390: sub addline {
8391: my ($fname,$hostid,$ip,$newline)=@_;
8392: my $contents;
8393: my $found=0;
1.355 albertel 8394: my $expr='^'.quotemeta($hostid).':'.quotemeta($ip).':';
1.134 albertel 8395: my $sh;
1.84 albertel 8396: if ($sh=IO::File->new("$fname.subscription")) {
8397: while (my $subline=<$sh>) {
8398: if ($subline !~ /$expr/) {$contents.= $subline;} else {$found=1;}
8399: }
8400: $sh->close();
8401: }
8402: $sh=IO::File->new(">$fname.subscription");
8403: if ($contents) { print $sh $contents; }
8404: if ($newline) { print $sh $newline; }
8405: $sh->close();
8406: return $found;
1.86 www 8407: }
8408:
1.234 foxr 8409: sub get_chat {
1.324 raeburn 8410: my ($cdom,$cname,$udom,$uname,$group)=@_;
1.310 albertel 8411:
1.87 www 8412: my @entries=();
1.324 raeburn 8413: my $namespace = 'nohist_chatroom';
8414: my $namespace_inroom = 'nohist_inchatroom';
1.335 albertel 8415: if ($group ne '') {
1.324 raeburn 8416: $namespace .= '_'.$group;
8417: $namespace_inroom .= '_'.$group;
8418: }
8419: my $hashref = &tie_user_hash($cdom, $cname, $namespace,
1.310 albertel 8420: &GDBM_READER());
8421: if ($hashref) {
8422: @entries=map { $_.':'.$hashref->{$_} } sort(keys(%$hashref));
1.311 albertel 8423: &untie_user_hash($hashref);
1.123 www 8424: }
1.124 www 8425: my @participants=();
1.134 albertel 8426: my $cutoff=time-60;
1.324 raeburn 8427: $hashref = &tie_user_hash($cdom, $cname, $namespace_inroom,
1.310 albertel 8428: &GDBM_WRCREAT());
8429: if ($hashref) {
8430: $hashref->{$uname.':'.$udom}=time;
8431: foreach my $user (sort(keys(%$hashref))) {
8432: if ($hashref->{$user}>$cutoff) {
8433: push(@participants, 'active_participant:'.$user);
1.123 www 8434: }
8435: }
1.311 albertel 8436: &untie_user_hash($hashref);
1.86 www 8437: }
1.124 www 8438: return (@participants,@entries);
1.86 www 8439: }
8440:
1.234 foxr 8441: sub chat_add {
1.324 raeburn 8442: my ($cdom,$cname,$newchat,$group)=@_;
1.88 albertel 8443: my @entries=();
1.142 www 8444: my $time=time;
1.324 raeburn 8445: my $namespace = 'nohist_chatroom';
8446: my $logfile = 'chatroom.log';
1.335 albertel 8447: if ($group ne '') {
1.324 raeburn 8448: $namespace .= '_'.$group;
8449: $logfile = 'chatroom_'.$group.'.log';
8450: }
8451: my $hashref = &tie_user_hash($cdom, $cname, $namespace,
1.310 albertel 8452: &GDBM_WRCREAT());
8453: if ($hashref) {
8454: @entries=map { $_.':'.$hashref->{$_} } sort(keys(%$hashref));
1.88 albertel 8455: my ($lastid)=($entries[$#entries]=~/^(\w+)\:/);
8456: my ($thentime,$idnum)=split(/\_/,$lastid);
8457: my $newid=$time.'_000000';
8458: if ($thentime==$time) {
8459: $idnum=~s/^0+//;
8460: $idnum++;
8461: $idnum=substr('000000'.$idnum,-6,6);
8462: $newid=$time.'_'.$idnum;
8463: }
1.310 albertel 8464: $hashref->{$newid}=$newchat;
1.88 albertel 8465: my $expired=$time-3600;
1.310 albertel 8466: foreach my $comment (keys(%$hashref)) {
8467: my ($thistime) = ($comment=~/(\d+)\_/);
1.88 albertel 8468: if ($thistime<$expired) {
1.310 albertel 8469: delete $hashref->{$comment};
1.88 albertel 8470: }
8471: }
1.310 albertel 8472: {
8473: my $proname=&propath($cdom,$cname);
1.324 raeburn 8474: if (open(CHATLOG,">>$proname/$logfile")) {
1.310 albertel 8475: print CHATLOG ("$time:".&unescape($newchat)."\n");
8476: }
8477: close(CHATLOG);
1.142 www 8478: }
1.311 albertel 8479: &untie_user_hash($hashref);
1.86 www 8480: }
1.84 albertel 8481: }
8482:
8483: sub unsub {
8484: my ($fname,$clientip)=@_;
8485: my $result;
1.188 foxr 8486: my $unsubs = 0; # Number of successful unsubscribes:
8487:
8488:
8489: # An old way subscriptions were handled was to have a
8490: # subscription marker file:
8491:
8492: Debug("Attempting unlink of $fname.$clientname");
1.161 foxr 8493: if (unlink("$fname.$clientname")) {
1.188 foxr 8494: $unsubs++; # Successful unsub via marker file.
8495: }
8496:
8497: # The more modern way to do it is to have a subscription list
8498: # file:
8499:
1.84 albertel 8500: if (-e "$fname.subscription") {
1.161 foxr 8501: my $found=&addline($fname,$clientname,$clientip,'');
1.188 foxr 8502: if ($found) {
8503: $unsubs++;
8504: }
8505: }
8506:
8507: # If either or both of these mechanisms succeeded in unsubscribing a
8508: # resource we can return ok:
8509:
8510: if($unsubs) {
8511: $result = "ok\n";
1.84 albertel 8512: } else {
1.188 foxr 8513: $result = "not_subscribed\n";
1.84 albertel 8514: }
1.188 foxr 8515:
1.84 albertel 8516: return $result;
8517: }
8518:
1.101 www 8519: sub currentversion {
8520: my $fname=shift;
8521: my $version=-1;
8522: my $ulsdir='';
8523: if ($fname=~/^(.+)\/[^\/]+$/) {
8524: $ulsdir=$1;
8525: }
1.114 albertel 8526: my ($fnamere1,$fnamere2);
8527: # remove version if already specified
1.101 www 8528: $fname=~s/\.\d+\.(\w+(?:\.meta)*)$/\.$1/;
1.114 albertel 8529: # get the bits that go before and after the version number
8530: if ( $fname=~/^(.*\.)(\w+(?:\.meta)*)$/ ) {
8531: $fnamere1=$1;
8532: $fnamere2='.'.$2;
8533: }
1.101 www 8534: if (-e $fname) { $version=1; }
8535: if (-e $ulsdir) {
1.134 albertel 8536: if(-d $ulsdir) {
8537: if (opendir(LSDIR,$ulsdir)) {
8538: my $ulsfn;
8539: while ($ulsfn=readdir(LSDIR)) {
1.101 www 8540: # see if this is a regular file (ignore links produced earlier)
1.134 albertel 8541: my $thisfile=$ulsdir.'/'.$ulsfn;
8542: unless (-l $thisfile) {
1.160 www 8543: if ($thisfile=~/\Q$fnamere1\E(\d+)\Q$fnamere2\E$/) {
1.134 albertel 8544: if ($1>$version) { $version=$1; }
8545: }
8546: }
8547: }
8548: closedir(LSDIR);
8549: $version++;
8550: }
8551: }
8552: }
8553: return $version;
1.101 www 8554: }
8555:
8556: sub thisversion {
8557: my $fname=shift;
8558: my $version=-1;
8559: if ($fname=~/\.(\d+)\.\w+(?:\.meta)*$/) {
8560: $version=$1;
8561: }
8562: return $version;
8563: }
8564:
1.84 albertel 8565: sub subscribe {
8566: my ($userinput,$clientip)=@_;
8567: my $result;
1.293 albertel 8568: my ($cmd,$fname)=split(/:/,$userinput,2);
1.84 albertel 8569: my $ownership=&ishome($fname);
8570: if ($ownership eq 'owner') {
1.101 www 8571: # explitly asking for the current version?
8572: unless (-e $fname) {
8573: my $currentversion=¤tversion($fname);
8574: if (&thisversion($fname)==$currentversion) {
8575: if ($fname=~/^(.+)\.\d+\.(\w+(?:\.meta)*)$/) {
8576: my $root=$1;
8577: my $extension=$2;
8578: symlink($root.'.'.$extension,
8579: $root.'.'.$currentversion.'.'.$extension);
1.102 www 8580: unless ($extension=~/\.meta$/) {
8581: symlink($root.'.'.$extension.'.meta',
8582: $root.'.'.$currentversion.'.'.$extension.'.meta');
8583: }
1.101 www 8584: }
8585: }
8586: }
1.84 albertel 8587: if (-e $fname) {
8588: if (-d $fname) {
8589: $result="directory\n";
8590: } else {
1.161 foxr 8591: if (-e "$fname.$clientname") {&unsub($fname,$clientip);}
1.134 albertel 8592: my $now=time;
1.161 foxr 8593: my $found=&addline($fname,$clientname,$clientip,
8594: "$clientname:$clientip:$now\n");
1.84 albertel 8595: if ($found) { $result="$fname\n"; }
8596: # if they were subscribed to only meta data, delete that
8597: # subscription, when you subscribe to a file you also get
8598: # the metadata
8599: unless ($fname=~/\.meta$/) { &unsub("$fname.meta",$clientip); }
8600: $fname=~s/\/home\/httpd\/html\/res/raw/;
1.476 raeburn 8601: my $protocol = $Apache::lonnet::protocol{$perlvar{'lonHostID'}};
8602: $protocol = 'http' if ($protocol ne 'https');
8603: $fname=$protocol.'://'.&Apache::lonnet::hostname($perlvar{'lonHostID'})."/".$fname;
1.84 albertel 8604: $result="$fname\n";
8605: }
8606: } else {
8607: $result="not_found\n";
8608: }
8609: } else {
8610: $result="rejected\n";
8611: }
8612: return $result;
8613: }
1.287 foxr 8614: # Change the passwd of a unix user. The caller must have
8615: # first verified that the user is a loncapa user.
8616: #
8617: # Parameters:
8618: # user - Unix user name to change.
8619: # pass - New password for the user.
8620: # Returns:
8621: # ok - if success
8622: # other - Some meaningfule error message string.
8623: # NOTE:
8624: # invokes a setuid script to change the passwd.
8625: sub change_unix_password {
8626: my ($user, $pass) = @_;
8627:
8628: &Debug("change_unix_password");
8629: my $execdir=$perlvar{'lonDaemons'};
8630: &Debug("Opening lcpasswd pipeline");
8631: my $pf = IO::File->new("|$execdir/lcpasswd > "
8632: ."$perlvar{'lonDaemons'}"
8633: ."/logs/lcpasswd.log");
8634: print $pf "$user\n$pass\n$pass\n";
8635: close $pf;
8636: my $err = $?;
8637: return ($err < @passwderrors) ? $passwderrors[$err] :
8638: "pwchange_falure - unknown error";
8639:
8640:
8641: }
8642:
1.91 albertel 8643:
8644: sub make_passwd_file {
1.518 raeburn 8645: my ($uname,$udom,$umode,$npass,$passfilename,$action)=@_;
1.390 raeburn 8646: my $result="ok";
1.91 albertel 8647: if ($umode eq 'krb4' or $umode eq 'krb5') {
8648: {
8649: my $pf = IO::File->new(">$passfilename");
1.261 foxr 8650: if ($pf) {
8651: print $pf "$umode:$npass\n";
1.518 raeburn 8652: &update_passwd_history($uname,$udom,$umode,$action);
1.261 foxr 8653: } else {
8654: $result = "pass_file_failed_error";
8655: }
1.91 albertel 8656: }
8657: } elsif ($umode eq 'internal') {
1.518 raeburn 8658: my $ncpass = &hash_passwd($udom,$npass);
1.91 albertel 8659: {
8660: &Debug("Creating internal auth");
8661: my $pf = IO::File->new(">$passfilename");
1.261 foxr 8662: if($pf) {
1.518 raeburn 8663: print $pf "internal:$ncpass\n";
8664: &update_passwd_history($uname,$udom,$umode,$action);
1.261 foxr 8665: } else {
8666: $result = "pass_file_failed_error";
8667: }
1.91 albertel 8668: }
8669: } elsif ($umode eq 'localauth') {
8670: {
8671: my $pf = IO::File->new(">$passfilename");
1.261 foxr 8672: if($pf) {
8673: print $pf "localauth:$npass\n";
1.524 raeburn 8674: &update_passwd_history($uname,$udom,$umode,$action);
1.261 foxr 8675: } else {
8676: $result = "pass_file_failed_error";
8677: }
1.91 albertel 8678: }
8679: } elsif ($umode eq 'unix') {
1.502 raeburn 8680: &logthis(">>>Attempt to create unix account blocked -- unix auth not available for new users.");
8681: $result="no_new_unix_accounts";
1.91 albertel 8682: } elsif ($umode eq 'none') {
8683: {
1.223 foxr 8684: my $pf = IO::File->new("> $passfilename");
1.261 foxr 8685: if($pf) {
8686: print $pf "none:\n";
8687: } else {
8688: $result = "pass_file_failed_error";
8689: }
1.91 albertel 8690: }
1.543 raeburn 8691: } elsif ($umode eq 'lti') {
8692: my $pf = IO::File->new(">$passfilename");
8693: if($pf) {
8694: print $pf "lti:\n";
8695: &update_passwd_history($uname,$udom,$umode,$action);
8696: } else {
8697: $result = "pass_file_failed_error";
8698: }
1.91 albertel 8699: } else {
1.390 raeburn 8700: $result="auth_mode_error";
1.91 albertel 8701: }
8702: return $result;
1.121 albertel 8703: }
8704:
1.265 albertel 8705: sub convert_photo {
8706: my ($start,$dest)=@_;
8707: system("convert $start $dest");
8708: }
8709:
1.121 albertel 8710: sub sethost {
8711: my ($remotereq) = @_;
8712: my (undef,$hostid)=split(/:/,$remotereq);
1.322 albertel 8713: # ignore sethost if we are already correct
8714: if ($hostid eq $currenthostid) {
8715: return 'ok';
8716: }
8717:
1.121 albertel 8718: if (!defined($hostid)) { $hostid=$perlvar{'lonHostID'}; }
1.368 albertel 8719: if (&Apache::lonnet::get_host_ip($perlvar{'lonHostID'})
8720: eq &Apache::lonnet::get_host_ip($hostid)) {
1.200 matthew 8721: $currenthostid =$hostid;
1.369 albertel 8722: $currentdomainid=&Apache::lonnet::host_domain($hostid);
1.556 raeburn 8723: &set_client_info();
1.443 www 8724: # &logthis("Setting hostid to $hostid, and domain to $currentdomainid");
1.121 albertel 8725: } else {
8726: &logthis("Requested host id $hostid not an alias of ".
8727: $perlvar{'lonHostID'}." refusing connection");
8728: return 'unable_to_set';
8729: }
8730: return 'ok';
8731: }
8732:
8733: sub version {
8734: my ($userinput)=@_;
8735: $remoteVERSION=(split(/:/,$userinput))[1];
8736: return "version:$VERSION";
1.127 albertel 8737: }
1.178 foxr 8738:
1.447 raeburn 8739: sub get_usersession_config {
8740: my ($dom,$name) = @_;
8741: my ($usersessionconf,$cached)=&Apache::lonnet::is_cached_new($name,$dom);
8742: if (defined($cached)) {
8743: return $usersessionconf;
8744: } else {
8745: my %domconfig = &Apache::lonnet::get_dom('configuration',['usersessions'],$dom);
1.525 raeburn 8746: &Apache::lonnet::do_cache_new($name,$dom,$domconfig{'usersessions'},3600);
8747: return $domconfig{'usersessions'};
1.447 raeburn 8748: }
8749: return;
8750: }
1.200 matthew 8751:
1.534 raeburn 8752: sub get_usersearch_config {
8753: my ($dom,$name) = @_;
8754: my ($usersearchconf,$cached)=&Apache::lonnet::is_cached_new($name,$dom);
8755: if (defined($cached)) {
8756: return $usersearchconf;
8757: } else {
8758: my %domconfig = &Apache::lonnet::get_dom('configuration',['directorysrch'],$dom);
8759: &Apache::lonnet::do_cache_new($name,$dom,$domconfig{'directorysrch'},600);
8760: return $domconfig{'directorysrch'};
8761: }
8762: return;
8763: }
8764:
1.525 raeburn 8765: sub get_prohibited {
8766: my ($dom) = @_;
8767: my $name = 'trust';
8768: my ($trustconfig,$cached)=&Apache::lonnet::is_cached_new($name,$dom);
8769: unless (defined($cached)) {
8770: my %domconfig = &Apache::lonnet::get_dom('configuration',['trust'],$dom);
8771: &Apache::lonnet::do_cache_new($name,$dom,$domconfig{'trust'},3600);
8772: $trustconfig = $domconfig{'trust'};
8773: }
8774: my %prohibited;
8775: if (ref($trustconfig)) {
8776: foreach my $prefix (keys(%{$trustconfig})) {
8777: if (ref($trustconfig->{$prefix}) eq 'HASH') {
8778: my $reject;
8779: if (ref($trustconfig->{$prefix}->{'exc'}) eq 'ARRAY') {
8780: if (grep(/^\Q$clientintdom\E$/,@{$trustconfig->{$prefix}->{'exc'}})) {
8781: $reject = 1;
8782: }
8783: }
8784: if (ref($trustconfig->{$prefix}->{'inc'}) eq 'ARRAY') {
8785: if (grep(/^\Q$clientintdom\E$/,@{$trustconfig->{$prefix}->{'inc'}})) {
8786: $reject = 0;
8787: } else {
8788: $reject = 1;
8789: }
8790: }
8791: if ($reject) {
8792: $prohibited{$prefix} = 1;
8793: }
8794: }
8795: }
8796: }
8797: return %prohibited;
8798: }
1.450 raeburn 8799:
1.556 raeburn 8800: sub get_remote_hostable {
8801: my ($dom) = @_;
8802: my $result;
8803: if ($clientintdom) {
8804: $result = 1;
8805: my $remsessconf = &get_usersession_config($dom,'remotesession');
8806: if (ref($remsessconf) eq 'HASH') {
8807: if (ref($remsessconf->{'remote'}) eq 'HASH') {
8808: if (ref($remsessconf->{'remote'}->{'excludedomain'}) eq 'ARRAY') {
8809: if (grep(/^\Q$clientintdom\E$/,@{$remsessconf->{'remote'}->{'excludedomain'}})) {
8810: $result = 0;
8811: }
8812: }
8813: if (ref($remsessconf->{'remote'}->{'includedomain'}) eq 'ARRAY') {
8814: if (grep(/^\Q$clientintdom\E$/,@{$remsessconf->{'remote'}->{'includedomain'}})) {
8815: $result = 1;
8816: } else {
8817: $result = 0;
8818: }
8819: }
8820: }
8821: }
8822: }
8823: return $result;
8824: }
8825:
1.471 raeburn 8826: sub distro_and_arch {
8827: return $dist.':'.$arch;
8828: }
8829:
1.61 harris41 8830: # ----------------------------------- POD (plain old documentation, CPAN style)
8831:
8832: =head1 NAME
8833:
8834: lond - "LON Daemon" Server (port "LOND" 5663)
8835:
8836: =head1 SYNOPSIS
8837:
1.74 harris41 8838: Usage: B<lond>
8839:
8840: Should only be run as user=www. This is a command-line script which
8841: is invoked by B<loncron>. There is no expectation that a typical user
8842: will manually start B<lond> from the command-line. (In other words,
8843: DO NOT START B<lond> YOURSELF.)
1.61 harris41 8844:
8845: =head1 DESCRIPTION
8846:
1.74 harris41 8847: There are two characteristics associated with the running of B<lond>,
8848: PROCESS MANAGEMENT (starting, stopping, handling child processes)
8849: and SERVER-SIDE ACTIVITIES (password authentication, user creation,
8850: subscriptions, etc). These are described in two large
8851: sections below.
8852:
8853: B<PROCESS MANAGEMENT>
8854:
1.61 harris41 8855: Preforker - server who forks first. Runs as a daemon. HUPs.
8856: Uses IDEA encryption
8857:
1.74 harris41 8858: B<lond> forks off children processes that correspond to the other servers
8859: in the network. Management of these processes can be done at the
8860: parent process level or the child process level.
8861:
8862: B<logs/lond.log> is the location of log messages.
8863:
8864: The process management is now explained in terms of linux shell commands,
8865: subroutines internal to this code, and signal assignments:
8866:
8867: =over 4
8868:
8869: =item *
8870:
8871: PID is stored in B<logs/lond.pid>
8872:
8873: This is the process id number of the parent B<lond> process.
8874:
8875: =item *
8876:
8877: SIGTERM and SIGINT
8878:
8879: Parent signal assignment:
8880: $SIG{INT} = $SIG{TERM} = \&HUNTSMAN;
8881:
8882: Child signal assignment:
8883: $SIG{INT} = 'DEFAULT'; (and SIGTERM is DEFAULT also)
8884: (The child dies and a SIGALRM is sent to parent, awaking parent from slumber
8885: to restart a new child.)
8886:
8887: Command-line invocations:
8888: B<kill> B<-s> SIGTERM I<PID>
8889: B<kill> B<-s> SIGINT I<PID>
8890:
8891: Subroutine B<HUNTSMAN>:
8892: This is only invoked for the B<lond> parent I<PID>.
8893: This kills all the children, and then the parent.
8894: The B<lonc.pid> file is cleared.
8895:
8896: =item *
8897:
8898: SIGHUP
8899:
8900: Current bug:
8901: This signal can only be processed the first time
8902: on the parent process. Subsequent SIGHUP signals
8903: have no effect.
8904:
8905: Parent signal assignment:
8906: $SIG{HUP} = \&HUPSMAN;
8907:
8908: Child signal assignment:
8909: none (nothing happens)
8910:
8911: Command-line invocations:
8912: B<kill> B<-s> SIGHUP I<PID>
8913:
8914: Subroutine B<HUPSMAN>:
8915: This is only invoked for the B<lond> parent I<PID>,
8916: This kills all the children, and then the parent.
8917: The B<lond.pid> file is cleared.
8918:
8919: =item *
8920:
8921: SIGUSR1
8922:
8923: Parent signal assignment:
8924: $SIG{USR1} = \&USRMAN;
8925:
8926: Child signal assignment:
8927: $SIG{USR1}= \&logstatus;
8928:
8929: Command-line invocations:
8930: B<kill> B<-s> SIGUSR1 I<PID>
8931:
8932: Subroutine B<USRMAN>:
8933: When invoked for the B<lond> parent I<PID>,
8934: SIGUSR1 is sent to all the children, and the status of
8935: each connection is logged.
1.144 foxr 8936:
8937: =item *
8938:
8939: SIGUSR2
8940:
8941: Parent Signal assignment:
8942: $SIG{USR2} = \&UpdateHosts
8943:
8944: Child signal assignment:
8945: NONE
8946:
1.74 harris41 8947:
8948: =item *
8949:
8950: SIGCHLD
8951:
8952: Parent signal assignment:
8953: $SIG{CHLD} = \&REAPER;
8954:
8955: Child signal assignment:
8956: none
8957:
8958: Command-line invocations:
8959: B<kill> B<-s> SIGCHLD I<PID>
8960:
8961: Subroutine B<REAPER>:
8962: This is only invoked for the B<lond> parent I<PID>.
8963: Information pertaining to the child is removed.
8964: The socket port is cleaned up.
8965:
8966: =back
8967:
8968: B<SERVER-SIDE ACTIVITIES>
8969:
8970: Server-side information can be accepted in an encrypted or non-encrypted
8971: method.
8972:
8973: =over 4
8974:
8975: =item ping
8976:
8977: Query a client in the hosts.tab table; "Are you there?"
8978:
8979: =item pong
8980:
8981: Respond to a ping query.
8982:
8983: =item ekey
8984:
8985: Read in encrypted key, make cipher. Respond with a buildkey.
8986:
8987: =item load
8988:
8989: Respond with CPU load based on a computation upon /proc/loadavg.
8990:
8991: =item currentauth
8992:
8993: Reply with current authentication information (only over an
8994: encrypted channel).
8995:
8996: =item auth
8997:
8998: Only over an encrypted channel, reply as to whether a user's
8999: authentication information can be validated.
9000:
9001: =item passwd
9002:
9003: Allow for a password to be set.
9004:
9005: =item makeuser
9006:
9007: Make a user.
9008:
1.517 raeburn 9009: =item changeuserauth
1.74 harris41 9010:
9011: Allow for authentication mechanism and password to be changed.
9012:
9013: =item home
1.61 harris41 9014:
1.74 harris41 9015: Respond to a question "are you the home for a given user?"
9016:
9017: =item update
9018:
9019: Update contents of a subscribed resource.
9020:
9021: =item unsubscribe
9022:
9023: The server is unsubscribing from a resource.
9024:
9025: =item subscribe
9026:
9027: The server is subscribing to a resource.
9028:
9029: =item log
9030:
9031: Place in B<logs/lond.log>
9032:
9033: =item put
9034:
9035: stores hash in namespace
9036:
1.496 raeburn 9037: =item rolesput
1.74 harris41 9038:
9039: put a role into a user's environment
9040:
9041: =item get
9042:
9043: returns hash with keys from array
9044: reference filled in from namespace
9045:
9046: =item eget
9047:
9048: returns hash with keys from array
9049: reference filled in from namesp (encrypts the return communication)
9050:
9051: =item rolesget
9052:
9053: get a role from a user's environment
9054:
9055: =item del
9056:
9057: deletes keys out of array from namespace
9058:
9059: =item keys
9060:
9061: returns namespace keys
9062:
9063: =item dump
9064:
9065: dumps the complete (or key matching regexp) namespace into a hash
9066:
9067: =item store
9068:
9069: stores hash permanently
9070: for this url; hashref needs to be given and should be a \%hashname; the
9071: remaining args aren't required and if they aren't passed or are '' they will
9072: be derived from the ENV
9073:
9074: =item restore
9075:
9076: returns a hash for a given url
9077:
9078: =item querysend
9079:
9080: Tells client about the lonsql process that has been launched in response
9081: to a sent query.
9082:
9083: =item queryreply
9084:
9085: Accept information from lonsql and make appropriate storage in temporary
9086: file space.
9087:
9088: =item idput
9089:
9090: Defines usernames as corresponding to IDs. (These "IDs" are unique identifiers
9091: for each student, defined perhaps by the institutional Registrar.)
9092:
9093: =item idget
9094:
9095: Returns usernames corresponding to IDs. (These "IDs" are unique identifiers
9096: for each student, defined perhaps by the institutional Registrar.)
9097:
1.517 raeburn 9098: =item iddel
9099:
9100: Deletes one or more ids in a domain's id database.
9101:
1.74 harris41 9102: =item tmpput
9103:
9104: Accept and store information in temporary space.
9105:
9106: =item tmpget
9107:
9108: Send along temporarily stored information.
9109:
9110: =item ls
9111:
9112: List part of a user's directory.
9113:
1.135 foxr 9114: =item pushtable
9115:
9116: Pushes a file in /home/httpd/lonTab directory. Currently limited to:
9117: hosts.tab and domain.tab. The old file is copied to *.tab.backup but
9118: must be restored manually in case of a problem with the new table file.
9119: pushtable requires that the request be encrypted and validated via
9120: ValidateManager. The form of the command is:
9121: enc:pushtable tablename <tablecontents> \n
9122: where pushtable, tablename and <tablecontents> will be encrypted, but \n is a
9123: cleartext newline.
9124:
1.74 harris41 9125: =item Hanging up (exit or init)
9126:
9127: What to do when a client tells the server that they (the client)
9128: are leaving the network.
9129:
9130: =item unknown command
9131:
9132: If B<lond> is sent an unknown command (not in the list above),
9133: it replys to the client "unknown_cmd".
1.135 foxr 9134:
1.74 harris41 9135:
9136: =item UNKNOWN CLIENT
9137:
9138: If the anti-spoofing algorithm cannot verify the client,
9139: the client is rejected (with a "refused" message sent
9140: to the client, and the connection is closed.
9141:
9142: =back
1.61 harris41 9143:
9144: =head1 PREREQUISITES
9145:
9146: IO::Socket
9147: IO::File
9148: Apache::File
9149: POSIX
9150: Crypt::IDEA
9151: GDBM_File
9152: Authen::Krb4
1.91 albertel 9153: Authen::Krb5
1.61 harris41 9154:
9155: =head1 COREQUISITES
9156:
1.490 droeschl 9157: none
9158:
1.61 harris41 9159: =head1 OSNAMES
9160:
9161: linux
9162:
9163: =head1 SCRIPT CATEGORIES
9164:
9165: Server/Process
9166:
9167: =cut
1.409 foxr 9168:
9169:
9170: =pod
9171:
9172: =head1 LOG MESSAGES
9173:
9174: The messages below can be emitted in the lond log. This log is located
9175: in ~httpd/perl/logs/lond.log Many log messages have HTML encapsulation
9176: to provide coloring if examined from inside a web page. Some do not.
9177: Where color is used, the colors are; Red for sometihhng to get excited
9178: about and to follow up on. Yellow for something to keep an eye on to
9179: be sure it does not get worse, Green,and Blue for informational items.
9180:
9181: In the discussions below, sometimes reference is made to ~httpd
9182: when describing file locations. There isn't really an httpd
9183: user, however there is an httpd directory that gets installed in the
9184: place that user home directories go. On linux, this is usually
9185: (always?) /home/httpd.
9186:
9187:
9188: Some messages are colorless. These are usually (not always)
9189: Green/Blue color level messages.
9190:
9191: =over 2
9192:
9193: =item (Red) LocalConnection rejecting non local: <ip> ne 127.0.0.1
9194:
9195: A local connection negotiation was attempted by
9196: a host whose IP address was not 127.0.0.1.
9197: The socket is closed and the child will exit.
9198: lond has three ways to establish an encyrption
9199: key with a client:
9200:
9201: =over 2
9202:
9203: =item local
9204:
9205: The key is written and read from a file.
9206: This is only valid for connections from localhost.
9207:
9208: =item insecure
9209:
9210: The key is generated by the server and
9211: transmitted to the client.
9212:
9213: =item ssl (secure)
9214:
9215: An ssl connection is negotiated with the client,
9216: the key is generated by the server and sent to the
9217: client across this ssl connection before the
9218: ssl connectionis terminated and clear text
9219: transmission resumes.
9220:
9221: =back
9222:
9223: =item (Red) LocalConnection: caller is insane! init = <init> and type = <type>
9224:
9225: The client is local but has not sent an initialization
9226: string that is the literal "init:local" The connection
9227: is closed and the child exits.
9228:
9229: =item Red CRITICAL Can't get key file <error>
9230:
9231: SSL key negotiation is being attempted but the call to
1.549 raeburn 9232: lonssl::KeyFile failed. This usually means that the
1.409 foxr 9233: configuration file is not correctly defining or protecting
9234: the directories/files lonCertificateDirectory or
9235: lonnetPrivateKey
9236: <error> is a string that describes the reason that
9237: the key file could not be located.
9238:
9239: =item (Red) CRITICAL Can't get certificates <error>
9240:
9241: SSL key negotiation failed because we were not able to retrives our certificate
9242: or the CA's certificate in the call to lonssl::CertificateFile
9243: <error> is the textual reason this failed. Usual reasons:
9244:
9245: =over 2
1.490 droeschl 9246:
1.409 foxr 9247: =item Apache config file for loncapa incorrect:
1.490 droeschl 9248:
1.409 foxr 9249: one of the variables
9250: lonCertificateDirectory, lonnetCertificateAuthority, or lonnetCertificate
9251: undefined or incorrect
9252:
9253: =item Permission error:
9254:
9255: The directory pointed to by lonCertificateDirectory is not readable by lond
9256:
9257: =item Permission error:
9258:
9259: Files in the directory pointed to by lonCertificateDirectory are not readable by lond.
9260:
9261: =item Installation error:
9262:
9263: Either the certificate authority file or the certificate have not
9264: been installed in lonCertificateDirectory.
9265:
9266: =item (Red) CRITICAL SSL Socket promotion failed: <err>
9267:
9268: The promotion of the connection from plaintext to SSL failed
9269: <err> is the reason for the failure. There are two
9270: system calls involved in the promotion (one of which failed),
9271: a dup to produce
9272: a second fd on the raw socket over which the encrypted data
9273: will flow and IO::SOcket::SSL->new_from_fd which creates
9274: the SSL connection on the duped fd.
9275:
9276: =item (Blue) WARNING client did not respond to challenge
9277:
9278: This occurs on an insecure (non SSL) connection negotiation request.
9279: lond generates some number from the time, the PID and sends it to
9280: the client. The client must respond by echoing this information back.
9281: If the client does not do so, that's a violation of the challenge
9282: protocols and the connection will be failed.
9283:
9284: =item (Red) No manager table. Nobody can manage!!
9285:
9286: lond has the concept of privileged hosts that
9287: can perform remote management function such
9288: as update the hosts.tab. The manager hosts
9289: are described in the
9290: ~httpd/lonTabs/managers.tab file.
9291: this message is logged if this file is missing.
9292:
9293:
9294: =item (Green) Registering manager <dnsname> as <cluster_name> with <ipaddress>
9295:
9296: Reports the successful parse and registration
9297: of a specific manager.
9298:
9299: =item Green existing host <clustername:dnsname>
9300:
9301: The manager host is already defined in the hosts.tab
9302: the information in that table, rather than the info in the
9303: manager table will be used to determine the manager's ip.
9304:
9305: =item (Red) Unable to craete <filename>
9306:
9307: lond has been asked to create new versions of an administrative
9308: file (by a manager). When this is done, the new file is created
9309: in a temp file and then renamed into place so that there are always
9310: usable administrative files, even if the update fails. This failure
9311: message means that the temp file could not be created.
9312: The update is abandoned, and the old file is available for use.
9313:
9314: =item (Green) CopyFile from <oldname> to <newname> failed
9315:
9316: In an update of administrative files, the copy of the existing file to a
9317: backup file failed. The installation of the new file may still succeed,
9318: but there will not be a back up file to rever to (this should probably
9319: be yellow).
9320:
9321: =item (Green) Pushfile: backed up <oldname> to <newname>
9322:
9323: See above, the backup of the old administrative file succeeded.
9324:
9325: =item (Red) Pushfile: Unable to install <filename> <reason>
9326:
9327: The new administrative file could not be installed. In this case,
9328: the old administrative file is still in use.
9329:
9330: =item (Green) Installed new < filename>.
9331:
9332: The new administrative file was successfullly installed.
9333:
9334: =item (Red) Reinitializing lond pid=<pid>
9335:
9336: The lonc child process <pid> will be sent a USR2
9337: signal.
9338:
9339: =item (Red) Reinitializing self
9340:
9341: We've been asked to re-read our administrative files,and
9342: are doing so.
9343:
9344: =item (Yellow) error:Invalid process identifier <ident>
9345:
9346: A reinit command was received, but the target part of the
9347: command was not valid. It must be either
9348: 'lond' or 'lonc' but was <ident>
9349:
9350: =item (Green) isValideditCommand checking: Command = <command> Key = <key> newline = <newline>
9351:
9352: Checking to see if lond has been handed a valid edit
9353: command. It is possible the edit command is not valid
9354: in that case there are no log messages to indicate that.
9355:
9356: =item Result of password change for <username> pwchange_success
9357:
9358: The password for <username> was
9359: successfully changed.
9360:
9361: =item Unable to open <user> passwd to change password
9362:
9363: Could not rewrite the
9364: internal password file for a user
9365:
9366: =item Result of password change for <user> : <result>
1.490 droeschl 9367:
1.409 foxr 9368: A unix password change for <user> was attempted
9369: and the pipe returned <result>
9370:
9371: =item LWP GET: <message> for <fname> (<remoteurl>)
9372:
9373: The lightweight process fetch for a resource failed
9374: with <message> the local filename that should
9375: have existed/been created was <fname> the
9376: corresponding URI: <remoteurl> This is emitted in several
9377: places.
9378:
9379: =item Unable to move <transname> to <destname>
9380:
9381: From fetch_user_file_handler - the user file was replicated but could not
9382: be mv'd to its final location.
9383:
9384: =item Looking for <domain> <username>
9385:
9386: From user_has_session_handler - This should be a Debug call instead
9387: it indicates lond is about to check whether the specified user has a
9388: session active on the specified domain on the local host.
9389:
9390: =item Client <ip> (<name>) hanging up: <input>
9391:
9392: lond has been asked to exit by its client. The <ip> and <name> identify the
9393: client systemand <input> is the full exit command sent to the server.
9394:
9395: =item Red CRITICAL: ABNORMAL EXIT. child <pid> for server <hostname> died through a crass with this error->[<message>].
1.490 droeschl 9396:
1.409 foxr 9397: A lond child terminated. NOte that this termination can also occur when the
9398: child receives the QUIT or DIE signals. <pid> is the process id of the child,
9399: <hostname> the host lond is working for, and <message> the reason the child died
9400: to the best of our ability to get it (I would guess that any numeric value
9401: represents and errno value). This is immediately followed by
9402:
9403: =item Famous last words: Catching exception - <log>
9404:
9405: Where log is some recent information about the state of the child.
9406:
9407: =item Red CRITICAL: TIME OUT <pid>
9408:
9409: Some timeout occured for server <pid>. THis is normally a timeout on an LWP
9410: doing an HTTP::GET.
9411:
9412: =item child <pid> died
9413:
9414: The reaper caught a SIGCHILD for the lond child process <pid>
9415: This should be modified to also display the IP of the dying child
9416: $children{$pid}
9417:
9418: =item Unknown child 0 died
9419: A child died but the wait for it returned a pid of zero which really should not
9420: ever happen.
9421:
9422: =item Child <which> - <pid> looks like we missed it's death
9423:
9424: When a sigchild is received, the reaper process checks all children to see if they are
9425: alive. If children are dying quite quickly, the lack of signal queuing can mean
9426: that a signal hearalds the death of more than one child. If so this message indicates
9427: which other one died. <which> is the ip of a dead child
9428:
9429: =item Free socket: <shutdownretval>
9430:
9431: The HUNTSMAN sub was called due to a SIGINT in a child process. The socket is being shutdown.
9432: for whatever reason, <shutdownretval> is printed but in fact shutdown() is not documented
9433: to return anything. This is followed by:
9434:
9435: =item Red CRITICAL: Shutting down
9436:
9437: Just prior to exit.
9438:
9439: =item Free socket: <shutdownretval>
9440:
9441: The HUPSMAN sub was called due to a SIGHUP. all children get killsed, and lond execs itself.
9442: This is followed by:
9443:
9444: =item (Red) CRITICAL: Restarting
9445:
9446: lond is about to exec itself to restart.
9447:
9448: =item (Blue) Updating connections
9449:
9450: (In response to a USR2). All the children (except the one for localhost)
9451: are about to be killed, the hosts tab reread, and Apache reloaded via apachereload.
9452:
9453: =item (Blue) UpdateHosts killing child <pid> for ip <ip>
9454:
9455: Due to USR2 as above.
9456:
9457: =item (Green) keeping child for ip <ip> (pid = <pid>)
9458:
9459: In response to USR2 as above, the child indicated is not being restarted because
9460: it's assumed that we'll always need a child for the localhost.
9461:
9462:
9463: =item Going to check on the children
9464:
9465: Parent is about to check on the health of the child processes.
9466: Note that this is in response to a USR1 sent to the parent lond.
9467: there may be one or more of the next two messages:
9468:
9469: =item <pid> is dead
9470:
9471: A child that we have in our child hash as alive has evidently died.
9472:
9473: =item Child <pid> did not respond
9474:
9475: In the health check the child <pid> did not update/produce a pid_.txt
9476: file when sent it's USR1 signal. That process is killed with a 9 signal, as it's
9477: assumed to be hung in some un-fixable way.
9478:
9479: =item Finished checking children
1.490 droeschl 9480:
1.409 foxr 9481: Master processs's USR1 processing is cojmplete.
9482:
9483: =item (Red) CRITICAL: ------- Starting ------
9484:
9485: (There are more '-'s on either side). Lond has forked itself off to
9486: form a new session and is about to start actual initialization.
9487:
9488: =item (Green) Attempting to start child (<client>)
9489:
9490: Started a new child process for <client>. Client is IO::Socket object
9491: connected to the child. This was as a result of a TCP/IP connection from a client.
9492:
9493: =item Unable to determine who caller was, getpeername returned nothing
1.490 droeschl 9494:
1.409 foxr 9495: In child process initialization. either getpeername returned undef or
9496: a zero sized object was returned. Processing continues, but in my opinion,
9497: this should be cause for the child to exit.
9498:
9499: =item Unable to determine clientip
9500:
9501: In child process initialization. The peer address from getpeername was not defined.
9502: The client address is stored as "Unavailable" and processing continues.
9503:
9504: =item (Yellow) INFO: Connection <ip> <name> connection type = <type>
1.490 droeschl 9505:
1.409 foxr 9506: In child initialization. A good connectionw as received from <ip>.
9507:
9508: =over 2
9509:
9510: =item <name>
9511:
9512: is the name of the client from hosts.tab.
9513:
9514: =item <type>
9515:
9516: Is the connection type which is either
9517:
9518: =over 2
9519:
9520: =item manager
9521:
9522: The connection is from a manager node, not in hosts.tab
9523:
9524: =item client
9525:
9526: the connection is from a non-manager in the hosts.tab
9527:
9528: =item both
9529:
9530: The connection is from a manager in the hosts.tab.
9531:
9532: =back
9533:
9534: =back
9535:
9536: =item (Blue) Certificates not installed -- trying insecure auth
9537:
9538: One of the certificate file, key file or
9539: certificate authority file could not be found for a client attempting
9540: SSL connection intiation. COnnection will be attemptied in in-secure mode.
9541: (this would be a system with an up to date lond that has not gotten a
9542: certificate from us).
9543:
9544: =item (Green) Successful local authentication
9545:
9546: A local connection successfully negotiated the encryption key.
9547: In this case the IDEA key is in a file (that is hopefully well protected).
9548:
9549: =item (Green) Successful ssl authentication with <client>
9550:
9551: The client (<client> is the peer's name in hosts.tab), has successfully
9552: negotiated an SSL connection with this child process.
9553:
9554: =item (Green) Successful insecure authentication with <client>
1.490 droeschl 9555:
1.409 foxr 9556:
9557: The client has successfully negotiated an insecure connection withthe child process.
9558:
9559: =item (Yellow) Attempted insecure connection disallowed
9560:
9561: The client attempted and failed to successfully negotiate a successful insecure
9562: connection. This can happen either because the variable londAllowInsecure is false
9563: or undefined, or becuse the child did not successfully echo back the challenge
9564: string.
9565:
9566:
9567: =back
9568:
1.441 raeburn 9569: =back
9570:
1.409 foxr 9571:
9572: =cut
FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>
![[BACK]](/icons/back.gif){kind=icon}
Return to lond CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [LON-CAPA] / loncom