Annotation of loncom/lond, revision 1.532
1.1 albertel 1: #!/usr/bin/perl
2: # The LearningOnline Network
3: # lond "LON Daemon" Server (port "LOND" 5663)
1.60 www 4: #
1.532 ! raeburn 5: # $Id: lond,v 1.531 2017/02/07 18:14:13 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:
1.532 ! raeburn 68: my $VERSION='$Revision: 1.531 $'; #' 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.
83: my $clientremoteok; # Client allowed to host domain's users.
84: # (version constraints ignored), not set
85: # if this host and client share "internet domain".
86: my %clientprohibited; # Actions prohibited on client;
87:
1.134 albertel 88: my $server;
1.200 matthew 89:
90: my $keymode;
1.198 foxr 91:
1.207 foxr 92: my $cipher; # Cipher key negotiated with client
93: my $tmpsnum = 0; # Id of tmpputs.
94:
1.178 foxr 95: #
96: # Connection type is:
97: # client - All client actions are allowed
98: # manager - only management functions allowed.
99: # both - Both management and client actions are allowed
100: #
1.161 foxr 101:
1.178 foxr 102: my $ConnectionType;
1.161 foxr 103:
1.178 foxr 104: my %managers; # Ip -> manager names
1.161 foxr 105:
1.178 foxr 106: my %perlvar; # Will have the apache conf defined perl vars.
1.134 albertel 107:
1.532 ! raeburn 108: my %secureconf; # Will have requirements for security
! 109: # of lond connections
! 110:
1.480 raeburn 111: my $dist;
112:
1.178 foxr 113: #
1.207 foxr 114: # The hash below is used for command dispatching, and is therefore keyed on the request keyword.
115: # Each element of the hash contains a reference to an array that contains:
116: # A reference to a sub that executes the request corresponding to the keyword.
117: # A flag that is true if the request must be encoded to be acceptable.
118: # A mask with bits as follows:
119: # CLIENT_OK - Set when the function is allowed by ordinary clients
120: # MANAGER_OK - Set when the function is allowed to manager clients.
121: #
122: my $CLIENT_OK = 1;
123: my $MANAGER_OK = 2;
124: my %Dispatcher;
125:
126:
127: #
1.178 foxr 128: # The array below are password error strings."
129: #
130: my $lastpwderror = 13; # Largest error number from lcpasswd.
131: my @passwderrors = ("ok",
1.287 foxr 132: "pwchange_failure - lcpasswd must be run as user 'www'",
133: "pwchange_failure - lcpasswd got incorrect number of arguments",
134: "pwchange_failure - lcpasswd did not get the right nubmer of input text lines",
135: "pwchange_failure - lcpasswd too many simultaneous pwd changes in progress",
136: "pwchange_failure - lcpasswd User does not exist.",
137: "pwchange_failure - lcpasswd Incorrect current passwd",
138: "pwchange_failure - lcpasswd Unable to su to root.",
139: "pwchange_failure - lcpasswd Cannot set new passwd.",
140: "pwchange_failure - lcpasswd Username has invalid characters",
141: "pwchange_failure - lcpasswd Invalid characters in password",
142: "pwchange_failure - lcpasswd User already exists",
143: "pwchange_failure - lcpasswd Something went wrong with user addition.",
144: "pwchange_failure - lcpasswd Password mismatch",
145: "pwchange_failure - lcpasswd Error filename is invalid");
1.97 foxr 146:
147:
1.412 foxr 148: # This array are the errors from lcinstallfile:
149:
150: my @installerrors = ("ok",
151: "Initial user id of client not that of www",
152: "Usage error, not enough command line arguments",
1.500 bisitz 153: "Source filename does not exist",
154: "Destination filename does not exist",
1.412 foxr 155: "Some file operation failed",
156: "Invalid table filename."
157: );
1.207 foxr 158:
159: #
1.525 raeburn 160: # The %trust hash classifies commands according to type of trust
161: # required for execution of the command.
162: #
163: # When clients from a different institution request execution of a
164: # particular command, the trust settings for that institution set
165: # for this domain (or default domain for a multi-domain server) will
166: # be checked to see if running the command is allowed.
167: #
168: # Trust types which depend on the "Trust" domain configuration
169: # for the machine's default domain are:
170: #
171: # content ("Access to this domain's content by others")
172: # shared ("Access to other domain's content by this domain")
173: # enroll ("Enrollment in this domain's courses by others")
174: # coaurem ("Co-author roles for this domain's users elsewhere")
175: # domroles ("Domain roles in this domain assignable to others")
176: # catalog ("Course Catalog for this domain displayed elsewhere")
177: # reqcrs ("Requests for creation of courses in this domain by others")
178: # msg ("Users in other domains can send messages to this domain")
179: #
180: # Trust type which depends on the User Session Hosting (remote)
181: # domain configuration for machine's default domain is: "remote".
182: #
183: # Trust types which depend on contents of manager.tab in
184: # /home/httpd/lonTabs is: "manageronly".
185: #
186: # Trust type which requires client to share the same LON-CAPA
187: # "internet domain" (i.e., same institution as this server) is:
188: # "institutiononly".
189: #
190:
191: my %trust = (
192: auth => {remote => 1},
193: autocreatepassword => {remote => 1},
194: autocrsreqchecks => {remote => 1, reqcrs => 1},
195: autocrsrequpdate => {remote => 1},
196: autocrsreqvalidation => {remote => 1},
197: autogetsections => {remote => 1},
198: autoinstcodedefaults => {remote => 1, catalog => 1},
199: autoinstcodeformat => {remote => 1, catalog => 1},
200: autonewcourse => {remote => 1, reqcrs => 1},
201: autophotocheck => {remote => 1, enroll => 1},
202: autophotochoice => {remote => 1},
203: autophotopermission => {remote => 1, enroll => 1},
204: autopossibleinstcodes => {remote => 1, reqcrs => 1},
205: autoretrieve => {remote => 1, enroll => 1, catalog => 1},
206: autorun => {remote => 1, enroll => 1, reqcrs => 1},
207: autovalidateclass_sec => {catalog => 1},
208: autovalidatecourse => {remote => 1, enroll => 1},
209: autovalidateinstcode => {domroles => 1, remote => 1, enroll => 1},
210: changeuserauth => {remote => 1, domroles => 1},
211: chatretr => {remote => 1, enroll => 1},
212: chatsend => {remote => 1, enroll => 1},
213: courseiddump => {remote => 1, domroles => 1, enroll => 1},
214: courseidput => {remote => 1, domroles => 1, enroll => 1},
215: courseidputhash => {remote => 1, domroles => 1, enroll => 1},
216: courselastaccess => {remote => 1, domroles => 1, enroll => 1},
217: currentauth => {remote => 1, domroles => 1, enroll => 1},
218: currentdump => {remote => 1, enroll => 1},
219: currentversion => {remote=> 1, content => 1},
220: dcmaildump => {remote => 1, domroles => 1},
221: dcmailput => {remote => 1, domroles => 1},
222: del => {remote => 1, domroles => 1, enroll => 1, content => 1},
223: deldom => {remote => 1, domroles => 1}, # not currently used
224: devalidatecache => {institutiononly => 1},
225: domroleput => {remote => 1, enroll => 1},
226: domrolesdump => {remote => 1, catalog => 1},
227: du => {remote => 1, enroll => 1},
228: du2 => {remote => 1, enroll => 1},
229: dump => {remote => 1, enroll => 1, domroles => 1},
230: edit => {institutiononly => 1}, #not used currently
231: eget => {remote => 1, domroles => 1, enroll => 1}, #not used currently
232: ekey => {}, #not used currently
233: exit => {anywhere => 1},
234: fetchuserfile => {remote => 1, enroll => 1},
235: get => {remote => 1, domroles => 1, enroll => 1},
236: getdom => {anywhere => 1},
237: home => {anywhere => 1},
238: iddel => {remote => 1, enroll => 1},
239: idget => {remote => 1, enroll => 1},
240: idput => {remote => 1, domroles => 1, enroll => 1},
241: inc => {remote => 1, enroll => 1},
242: init => {anywhere => 1},
243: inst_usertypes => {remote => 1, domroles => 1, enroll => 1},
244: instemailrules => {remote => 1, domroles => 1},
245: instidrulecheck => {remote => 1, domroles => 1,},
246: instidrules => {remote => 1, domroles => 1,},
247: instrulecheck => {remote => 1, enroll => 1, reqcrs => 1, domroles => 1},
248: instselfcreatecheck => {institutiononly => 1},
249: instuserrules => {remote => 1, enroll => 1, reqcrs => 1, domroles => 1},
250: keys => {remote => 1,},
251: load => {anywhere => 1},
252: log => {anywhere => 1},
253: ls => {remote => 1, enroll => 1, content => 1,},
254: ls2 => {remote => 1, enroll => 1, content => 1,},
255: ls3 => {remote => 1, enroll => 1, content => 1,},
256: makeuser => {remote => 1, enroll => 1, domroles => 1,},
257: mkdiruserfile => {remote => 1, enroll => 1,},
258: newput => {remote => 1, enroll => 1, reqcrs => 1, domroles => 1,},
259: passwd => {remote => 1},
260: ping => {anywhere => 1},
261: pong => {anywhere => 1},
262: pushfile => {manageronly => 1},
263: put => {remote => 1, enroll => 1, domroles => 1, msg => 1, content => 1, shared => 1},
264: putdom => {remote => 1, domroles => 1,},
265: putstore => {remote => 1, enroll => 1},
266: queryreply => {anywhere => 1},
267: querysend => {anywhere => 1},
268: quit => {anywhere => 1},
269: readlonnetglobal => {institutiononly => 1},
270: reinit => {manageronly => 1}, #not used currently
271: removeuserfile => {remote => 1, enroll => 1},
272: renameuserfile => {remote => 1,},
273: restore => {remote => 1, enroll => 1, reqcrs => 1,},
274: rolesdel => {remote => 1, enroll => 1, domroles => 1, coaurem => 1},
275: rolesput => {remote => 1, enroll => 1, domroles => 1, coaurem => 1},
1.527 raeburn 276: servercerts => {institutiononly => 1},
1.528 raeburn 277: serverdistarch => {anywhere => 1},
1.525 raeburn 278: serverhomeID => {anywhere => 1},
279: serverloncaparev => {anywhere => 1},
280: servertimezone => {remote => 1, enroll => 1},
281: setannounce => {remote => 1, domroles => 1},
282: sethost => {anywhere => 1},
283: store => {remote => 1, enroll => 1, reqcrs => 1,},
284: studentphoto => {remote => 1, enroll => 1},
285: sub => {content => 1,},
286: tmpdel => {anywhere => 1},
287: tmpget => {anywhere => 1},
288: tmpput => {anywhere => 1},
289: tokenauthuserfile => {anywhere => 1},
290: unsub => {content => 1,},
291: update => {shared => 1},
292: updateclickers => {remote => 1},
293: userhassession => {anywhere => 1},
294: userload => {anywhere => 1},
295: version => {anywhere => 1}, #not used
296: );
297:
298: #
1.207 foxr 299: # Statistics that are maintained and dislayed in the status line.
300: #
1.212 foxr 301: my $Transactions = 0; # Number of attempted transactions.
302: my $Failures = 0; # Number of transcations failed.
1.207 foxr 303:
304: # ResetStatistics:
305: # Resets the statistics counters:
306: #
307: sub ResetStatistics {
308: $Transactions = 0;
309: $Failures = 0;
310: }
311:
1.200 matthew 312: #------------------------------------------------------------------------
313: #
314: # LocalConnection
315: # Completes the formation of a locally authenticated connection.
316: # This function will ensure that the 'remote' client is really the
317: # local host. If not, the connection is closed, and the function fails.
318: # If so, initcmd is parsed for the name of a file containing the
319: # IDEA session key. The fie is opened, read, deleted and the session
320: # key returned to the caller.
321: #
322: # Parameters:
323: # $Socket - Socket open on client.
324: # $initcmd - The full text of the init command.
325: #
326: # Returns:
327: # IDEA session key on success.
328: # undef on failure.
329: #
330: sub LocalConnection {
331: my ($Socket, $initcmd) = @_;
1.373 albertel 332: Debug("Attempting local connection: $initcmd client: $clientip");
1.277 albertel 333: if($clientip ne "127.0.0.1") {
1.200 matthew 334: &logthis('<font color="red"> LocalConnection rejecting non local: '
1.373 albertel 335: ."$clientip ne 127.0.0.1 </font>");
1.200 matthew 336: close $Socket;
337: return undef;
1.224 foxr 338: } else {
1.200 matthew 339: chomp($initcmd); # Get rid of \n in filename.
340: my ($init, $type, $name) = split(/:/, $initcmd);
341: Debug(" Init command: $init $type $name ");
342:
343: # Require that $init = init, and $type = local: Otherwise
344: # the caller is insane:
345:
346: if(($init ne "init") && ($type ne "local")) {
347: &logthis('<font color = "red"> LocalConnection: caller is insane! '
348: ."init = $init, and type = $type </font>");
349: close($Socket);;
350: return undef;
351:
352: }
353: # Now get the key filename:
354:
355: my $IDEAKey = lonlocal::ReadKeyFile($name);
356: return $IDEAKey;
357: }
358: }
359: #------------------------------------------------------------------------------
360: #
361: # SSLConnection
362: # Completes the formation of an ssh authenticated connection. The
363: # socket is promoted to an ssl socket. If this promotion and the associated
364: # certificate exchange are successful, the IDEA key is generated and sent
365: # to the remote peer via the SSL tunnel. The IDEA key is also returned to
366: # the caller after the SSL tunnel is torn down.
367: #
368: # Parameters:
369: # Name Type Purpose
370: # $Socket IO::Socket::INET Plaintext socket.
371: #
372: # Returns:
373: # IDEA key on success.
374: # undef on failure.
375: #
376: sub SSLConnection {
377: my $Socket = shift;
378:
379: Debug("SSLConnection: ");
380: my $KeyFile = lonssl::KeyFile();
381: if(!$KeyFile) {
382: my $err = lonssl::LastError();
383: &logthis("<font color=\"red\"> CRITICAL"
384: ."Can't get key file $err </font>");
385: return undef;
386: }
387: my ($CACertificate,
388: $Certificate) = lonssl::CertificateFile();
389:
390:
391: # If any of the key, certificate or certificate authority
392: # certificate filenames are not defined, this can't work.
393:
394: if((!$Certificate) || (!$CACertificate)) {
395: my $err = lonssl::LastError();
396: &logthis("<font color=\"red\"> CRITICAL"
397: ."Can't get certificates: $err </font>");
398:
399: return undef;
400: }
401: Debug("Key: $KeyFile CA: $CACertificate Cert: $Certificate");
402:
403: # Indicate to our peer that we can procede with
404: # a transition to ssl authentication:
405:
406: print $Socket "ok:ssl\n";
407:
408: Debug("Approving promotion -> ssl");
409: # And do so:
410:
411: my $SSLSocket = lonssl::PromoteServerSocket($Socket,
412: $CACertificate,
413: $Certificate,
414: $KeyFile);
415: if(! ($SSLSocket) ) { # SSL socket promotion failed.
416: my $err = lonssl::LastError();
417: &logthis("<font color=\"red\"> CRITICAL "
418: ."SSL Socket promotion failed: $err </font>");
419: return undef;
420: }
421: Debug("SSL Promotion successful");
422:
423: #
424: # The only thing we'll use the socket for is to send the IDEA key
425: # to the peer:
426:
427: my $Key = lonlocal::CreateCipherKey();
428: print $SSLSocket "$Key\n";
429:
430: lonssl::Close($SSLSocket);
431:
432: Debug("Key exchange complete: $Key");
433:
434: return $Key;
435: }
436: #
437: # InsecureConnection:
438: # If insecure connections are allowd,
439: # exchange a challenge with the client to 'validate' the
440: # client (not really, but that's the protocol):
441: # We produce a challenge string that's sent to the client.
442: # The client must then echo the challenge verbatim to us.
443: #
444: # Parameter:
445: # Socket - Socket open on the client.
446: # Returns:
447: # 1 - success.
448: # 0 - failure (e.g.mismatch or insecure not allowed).
449: #
450: sub InsecureConnection {
451: my $Socket = shift;
452:
453: # Don't even start if insecure connections are not allowed.
1.532 ! raeburn 454: # return 0 if Insecure connections not allowed.
! 455: #
! 456: if (ref($secureconf{'connfrom'}) eq 'HASH') {
! 457: if ($clientsamedom) {
! 458: if ($secureconf{'connfrom'}{'dom'} eq 'req') {
! 459: return 0;
! 460: }
! 461: } elsif ($clientsameinst) {
! 462: if ($secureconf{'connfrom'}{'intdom'} eq 'req') {
! 463: return 0;
! 464: }
! 465: } else {
! 466: if ($secureconf{'connfrom'}{'other'} eq 'req') {
! 467: return 0;
! 468: }
! 469: }
! 470: } elsif (!$perlvar{londAllowInsecure}) {
1.200 matthew 471: return 0;
472: }
473:
474: # Fabricate a challenge string and send it..
475:
476: my $challenge = "$$".time; # pid + time.
477: print $Socket "$challenge\n";
478: &status("Waiting for challenge reply");
479:
480: my $answer = <$Socket>;
481: $answer =~s/\W//g;
482: if($challenge eq $answer) {
483: return 1;
1.224 foxr 484: } else {
1.200 matthew 485: logthis("<font color='blue'>WARNING client did not respond to challenge</font>");
486: &status("No challenge reqply");
487: return 0;
488: }
489:
490:
491: }
1.251 foxr 492: #
493: # Safely execute a command (as long as it's not a shel command and doesn
494: # not require/rely on shell escapes. The function operates by doing a
495: # a pipe based fork and capturing stdout and stderr from the pipe.
496: #
497: # Formal Parameters:
498: # $line - A line of text to be executed as a command.
499: # Returns:
500: # The output from that command. If the output is multiline the caller
501: # must know how to split up the output.
502: #
503: #
504: sub execute_command {
505: my ($line) = @_;
506: my @words = split(/\s/, $line); # Bust the command up into words.
507: my $output = "";
508:
509: my $pid = open(CHILD, "-|");
510:
511: if($pid) { # Parent process
512: Debug("In parent process for execute_command");
513: my @data = <CHILD>; # Read the child's outupt...
514: close CHILD;
515: foreach my $output_line (@data) {
516: Debug("Adding $output_line");
517: $output .= $output_line; # Presumably has a \n on it.
518: }
519:
520: } else { # Child process
521: close (STDERR);
522: open (STDERR, ">&STDOUT");# Combine stderr, and stdout...
523: exec(@words); # won't return.
524: }
525: return $output;
526: }
527:
1.200 matthew 528:
1.140 foxr 529: # GetCertificate: Given a transaction that requires a certificate,
530: # this function will extract the certificate from the transaction
531: # request. Note that at this point, the only concept of a certificate
532: # is the hostname to which we are connected.
533: #
534: # Parameter:
535: # request - The request sent by our client (this parameterization may
536: # need to change when we really use a certificate granting
537: # authority.
538: #
539: sub GetCertificate {
540: my $request = shift;
541:
542: return $clientip;
543: }
1.161 foxr 544:
1.178 foxr 545: #
546: # Return true if client is a manager.
547: #
548: sub isManager {
549: return (($ConnectionType eq "manager") || ($ConnectionType eq "both"));
550: }
551: #
552: # Return tru if client can do client functions
553: #
554: sub isClient {
555: return (($ConnectionType eq "client") || ($ConnectionType eq "both"));
556: }
1.161 foxr 557:
558:
1.156 foxr 559: #
560: # ReadManagerTable: Reads in the current manager table. For now this is
561: # done on each manager authentication because:
562: # - These authentications are not frequent
563: # - This allows dynamic changes to the manager table
564: # without the need to signal to the lond.
565: #
566: sub ReadManagerTable {
567:
1.412 foxr 568: &Debug("Reading manager table");
1.156 foxr 569: # Clean out the old table first..
570:
1.166 foxr 571: foreach my $key (keys %managers) {
572: delete $managers{$key};
573: }
574:
575: my $tablename = $perlvar{'lonTabDir'}."/managers.tab";
576: if (!open (MANAGERS, $tablename)) {
1.473 raeburn 577: my $hostname = &Apache::lonnet::hostname($perlvar{'lonHostID'});
578: if (&Apache::lonnet::is_LC_dns($hostname)) {
1.472 raeburn 579: &logthis('<font color="red">No manager table. Nobody can manage!!</font>');
580: }
581: return;
1.166 foxr 582: }
583: while(my $host = <MANAGERS>) {
584: chomp($host);
585: if ($host =~ "^#") { # Comment line.
586: next;
587: }
1.368 albertel 588: if (!defined &Apache::lonnet::get_host_ip($host)) { # This is a non cluster member
1.161 foxr 589: # The entry is of the form:
590: # cluname:hostname
591: # cluname - A 'cluster hostname' is needed in order to negotiate
592: # the host key.
593: # hostname- The dns name of the host.
594: #
1.166 foxr 595: my($cluname, $dnsname) = split(/:/, $host);
596:
597: my $ip = gethostbyname($dnsname);
598: if(defined($ip)) { # bad names don't deserve entry.
599: my $hostip = inet_ntoa($ip);
600: $managers{$hostip} = $cluname;
601: logthis('<font color="green"> registering manager '.
602: "$dnsname as $cluname with $hostip </font>\n");
603: }
604: } else {
605: logthis('<font color="green"> existing host'." $host</font>\n");
1.472 raeburn 606: $managers{&Apache::lonnet::get_host_ip($host)} = $host; # Use info from cluster tab if cluster memeber
1.166 foxr 607: }
608: }
1.156 foxr 609: }
1.140 foxr 610:
611: #
612: # ValidManager: Determines if a given certificate represents a valid manager.
613: # in this primitive implementation, the 'certificate' is
614: # just the connecting loncapa client name. This is checked
615: # against a valid client list in the configuration.
616: #
617: #
618: sub ValidManager {
619: my $certificate = shift;
620:
1.163 foxr 621: return isManager;
1.140 foxr 622: }
623: #
1.143 foxr 624: # CopyFile: Called as part of the process of installing a
625: # new configuration file. This function copies an existing
626: # file to a backup file.
627: # Parameters:
628: # oldfile - Name of the file to backup.
629: # newfile - Name of the backup file.
630: # Return:
631: # 0 - Failure (errno has failure reason).
632: # 1 - Success.
633: #
634: sub CopyFile {
1.192 foxr 635:
636: my ($oldfile, $newfile) = @_;
1.143 foxr 637:
1.281 matthew 638: if (! copy($oldfile,$newfile)) {
639: return 0;
1.143 foxr 640: }
1.281 matthew 641: chmod(0660, $newfile);
642: return 1;
1.143 foxr 643: }
1.157 foxr 644: #
645: # Host files are passed out with externally visible host IPs.
646: # If, for example, we are behind a fire-wall or NAT host, our
647: # internally visible IP may be different than the externally
648: # visible IP. Therefore, we always adjust the contents of the
649: # host file so that the entry for ME is the IP that we believe
650: # we have. At present, this is defined as the entry that
651: # DNS has for us. If by some chance we are not able to get a
652: # DNS translation for us, then we assume that the host.tab file
653: # is correct.
654: # BUGBUGBUG - in the future, we really should see if we can
655: # easily query the interface(s) instead.
656: # Parameter(s):
657: # contents - The contents of the host.tab to check.
658: # Returns:
659: # newcontents - The adjusted contents.
660: #
661: #
662: sub AdjustHostContents {
663: my $contents = shift;
664: my $adjusted;
665: my $me = $perlvar{'lonHostID'};
666:
1.354 albertel 667: foreach my $line (split(/\n/,$contents)) {
1.472 raeburn 668: if(!(($line eq "") || ($line =~ /^ *\#/) || ($line =~ /^ *$/) ||
669: ($line =~ /^\s*\^/))) {
1.157 foxr 670: chomp($line);
671: my ($id,$domain,$role,$name,$ip,$maxcon,$idleto,$mincon)=split(/:/,$line);
672: if ($id eq $me) {
1.354 albertel 673: my $ip = gethostbyname($name);
674: my $ipnew = inet_ntoa($ip);
675: $ip = $ipnew;
1.157 foxr 676: # Reconstruct the host line and append to adjusted:
677:
1.354 albertel 678: my $newline = "$id:$domain:$role:$name:$ip";
679: if($maxcon ne "") { # Not all hosts have loncnew tuning params
680: $newline .= ":$maxcon:$idleto:$mincon";
681: }
682: $adjusted .= $newline."\n";
1.157 foxr 683:
1.354 albertel 684: } else { # Not me, pass unmodified.
685: $adjusted .= $line."\n";
686: }
1.157 foxr 687: } else { # Blank or comment never re-written.
688: $adjusted .= $line."\n"; # Pass blanks and comments as is.
689: }
1.354 albertel 690: }
691: return $adjusted;
1.157 foxr 692: }
1.143 foxr 693: #
694: # InstallFile: Called to install an administrative file:
1.412 foxr 695: # - The file is created int a temp directory called <name>.tmp
696: # - lcinstall file is called to install the file.
697: # since the web app has no direct write access to the table directory
1.143 foxr 698: #
699: # Parameters:
700: # Name of the file
701: # File Contents.
702: # Return:
703: # nonzero - success.
704: # 0 - failure and $! has an errno.
1.412 foxr 705: # Assumptions:
706: # File installtion is a relatively infrequent
1.143 foxr 707: #
708: sub InstallFile {
1.192 foxr 709:
710: my ($Filename, $Contents) = @_;
1.412 foxr 711: # my $TempFile = $Filename.".tmp";
712: my $exedir = $perlvar{'lonDaemons'};
713: my $tmpdir = $exedir.'/tmp/';
714: my $TempFile = $tmpdir."TempTableFile.tmp";
1.143 foxr 715:
716: # Open the file for write:
717:
718: my $fh = IO::File->new("> $TempFile"); # Write to temp.
719: if(!(defined $fh)) {
720: &logthis('<font color="red"> Unable to create '.$TempFile."</font>");
721: return 0;
722: }
723: # write the contents of the file:
724:
725: print $fh ($Contents);
726: $fh->close; # In case we ever have a filesystem w. locking
727:
1.412 foxr 728: chmod(0664, $TempFile); # Everyone can write it.
729:
730: # Use lcinstall file to put the file in the table directory...
731:
732: &Debug("Opening pipe to $exedir/lcinstallfile $TempFile $Filename");
733: my $pf = IO::File->new("| $exedir/lcinstallfile $TempFile $Filename > $exedir/logs/lcinstallfile.log");
734: close $pf;
735: my $err = $?;
736: &Debug("Status is $err");
737: if ($err != 0) {
738: my $msg = $err;
739: if ($err < @installerrors) {
740: $msg = $installerrors[$err];
741: }
742: &logthis("Install failed for table file $Filename : $msg");
743: return 0;
744: }
745:
746: # Remove the temp file:
1.143 foxr 747:
1.412 foxr 748: unlink($TempFile);
1.143 foxr 749:
750: return 1;
751: }
1.200 matthew 752:
753:
1.169 foxr 754: #
755: # ConfigFileFromSelector: converts a configuration file selector
1.411 foxr 756: # into a configuration file pathname.
1.472 raeburn 757: # Supports the following file selectors:
758: # hosts, domain, dns_hosts, dns_domain
1.411 foxr 759: #
1.169 foxr 760: #
761: # Parameters:
762: # selector - Configuration file selector.
763: # Returns:
764: # Full path to the file or undef if the selector is invalid.
765: #
766: sub ConfigFileFromSelector {
767: my $selector = shift;
768: my $tablefile;
769:
770: my $tabledir = $perlvar{'lonTabDir'}.'/';
1.472 raeburn 771: if (($selector eq "hosts") || ($selector eq "domain") ||
772: ($selector eq "dns_hosts") || ($selector eq "dns_domain")) {
1.411 foxr 773: $tablefile = $tabledir.$selector.'.tab';
1.169 foxr 774: }
775: return $tablefile;
776: }
1.143 foxr 777: #
1.141 foxr 778: # PushFile: Called to do an administrative push of a file.
779: # - Ensure the file being pushed is one we support.
780: # - Backup the old file to <filename.saved>
781: # - Separate the contents of the new file out from the
782: # rest of the request.
783: # - Write the new file.
784: # Parameter:
785: # Request - The entire user request. This consists of a : separated
786: # string pushfile:tablename:contents.
787: # NOTE: The contents may have :'s in it as well making things a bit
788: # more interesting... but not much.
789: # Returns:
790: # String to send to client ("ok" or "refused" if bad file).
791: #
792: sub PushFile {
1.510 raeburn 793: my $request = shift;
1.141 foxr 794: my ($command, $filename, $contents) = split(":", $request, 3);
1.412 foxr 795: &Debug("PushFile");
1.141 foxr 796:
797: # At this point in time, pushes for only the following tables are
798: # supported:
799: # hosts.tab ($filename eq host).
800: # domain.tab ($filename eq domain).
1.472 raeburn 801: # dns_hosts.tab ($filename eq dns_host).
802: # dns_domain.tab ($filename eq dns_domain).
1.141 foxr 803: # Construct the destination filename or reject the request.
804: #
805: # lonManage is supposed to ensure this, however this session could be
806: # part of some elaborate spoof that managed somehow to authenticate.
807: #
808:
1.169 foxr 809:
810: my $tablefile = ConfigFileFromSelector($filename);
811: if(! (defined $tablefile)) {
1.141 foxr 812: return "refused";
813: }
1.412 foxr 814:
1.157 foxr 815: # If the file being pushed is the host file, we adjust the entry for ourself so that the
816: # IP will be our current IP as looked up in dns. Note this is only 99% good as it's possible
817: # to conceive of conditions where we don't have a DNS entry locally. This is possible in a
818: # network sense but it doesn't make much sense in a LonCAPA sense so we ignore (for now)
819: # that possibilty.
820:
821: if($filename eq "host") {
822: $contents = AdjustHostContents($contents);
1.510 raeburn 823: } elsif ($filename eq 'dns_host' || $filename eq 'dns_domain') {
824: if ($contents eq '') {
825: &logthis('<font color="red"> Pushfile: unable to install '
826: .$tablefile." - no data received from push. </font>");
827: return 'error: push had no data';
828: }
829: if (&Apache::lonnet::get_host_ip($clientname)) {
830: my $clienthost = &Apache::lonnet::hostname($clientname);
831: if ($managers{$clientip} eq $clientname) {
832: my $clientprotocol = $Apache::lonnet::protocol{$clientname};
833: $clientprotocol = 'http' if ($clientprotocol ne 'https');
834: my $url = '/adm/'.$filename;
835: $url =~ s{_}{/};
836: my $request=new HTTP::Request('GET',"$clientprotocol://$clienthost$url");
1.523 raeburn 837: my $response = LONCAPA::LWPReq::makerequest($clientname,$request,'',\%perlvar,60,0);
1.510 raeburn 838: if ($response->is_error()) {
839: &logthis('<font color="red"> Pushfile: unable to install '
840: .$tablefile." - error attempting to pull data. </font>");
841: return 'error: pull failed';
842: } else {
843: my $result = $response->content;
844: chomp($result);
845: unless ($result eq $contents) {
846: &logthis('<font color="red"> Pushfile: unable to install '
847: .$tablefile." - pushed data and pulled data differ. </font>");
848: my $pushleng = length($contents);
849: my $pullleng = length($result);
850: if ($pushleng != $pullleng) {
851: return "error: $pushleng vs $pullleng bytes";
852: } else {
853: return "error: mismatch push and pull";
854: }
855: }
856: }
857: }
858: }
1.157 foxr 859: }
860:
1.141 foxr 861: # Install the new file:
862:
1.412 foxr 863: &logthis("Installing new $tablefile contents:\n$contents");
1.143 foxr 864: if(!InstallFile($tablefile, $contents)) {
865: &logthis('<font color="red"> Pushfile: unable to install '
1.145 foxr 866: .$tablefile." $! </font>");
1.143 foxr 867: return "error:$!";
1.224 foxr 868: } else {
1.143 foxr 869: &logthis('<font color="green"> Installed new '.$tablefile
1.473 raeburn 870: ." - transaction by: $clientname ($clientip)</font>");
1.472 raeburn 871: my $adminmail = $perlvar{'lonAdmEMail'};
872: my $admindom = &Apache::lonnet::host_domain($perlvar{'lonHostID'});
873: if ($admindom ne '') {
874: my %domconfig =
875: &Apache::lonnet::get_dom('configuration',['contacts'],$admindom);
876: if (ref($domconfig{'contacts'}) eq 'HASH') {
877: if ($domconfig{'contacts'}{'adminemail'} ne '') {
878: $adminmail = $domconfig{'contacts'}{'adminemail'};
879: }
880: }
881: }
882: if ($adminmail =~ /^[^\@]+\@[^\@]+$/) {
883: my $msg = new Mail::Send;
884: $msg->to($adminmail);
885: $msg->subject('LON-CAPA DNS update on '.$perlvar{'lonHostID'});
886: $msg->add('Content-type','text/plain; charset=UTF-8');
887: if (my $fh = $msg->open()) {
888: print $fh 'Update to '.$tablefile.' from Cluster Manager '.
1.473 raeburn 889: "$clientname ($clientip)\n";
1.472 raeburn 890: $fh->close;
891: }
892: }
1.143 foxr 893: }
894:
1.141 foxr 895: # Indicate success:
896:
897: return "ok";
898:
899: }
1.145 foxr 900:
901: #
902: # Called to re-init either lonc or lond.
903: #
904: # Parameters:
905: # request - The full request by the client. This is of the form
906: # reinit:<process>
907: # where <process> is allowed to be either of
908: # lonc or lond
909: #
910: # Returns:
911: # The string to be sent back to the client either:
912: # ok - Everything worked just fine.
913: # error:why - There was a failure and why describes the reason.
914: #
915: #
916: sub ReinitProcess {
917: my $request = shift;
918:
1.146 foxr 919:
920: # separate the request (reinit) from the process identifier and
921: # validate it producing the name of the .pid file for the process.
922: #
923: #
924: my ($junk, $process) = split(":", $request);
1.147 foxr 925: my $processpidfile = $perlvar{'lonDaemons'}.'/logs/';
1.146 foxr 926: if($process eq 'lonc') {
927: $processpidfile = $processpidfile."lonc.pid";
1.147 foxr 928: if (!open(PIDFILE, "< $processpidfile")) {
929: return "error:Open failed for $processpidfile";
930: }
931: my $loncpid = <PIDFILE>;
932: close(PIDFILE);
933: logthis('<font color="red"> Reinitializing lonc pid='.$loncpid
934: ."</font>");
935: kill("USR2", $loncpid);
1.146 foxr 936: } elsif ($process eq 'lond') {
1.147 foxr 937: logthis('<font color="red"> Reinitializing self (lond) </font>');
938: &UpdateHosts; # Lond is us!!
1.146 foxr 939: } else {
940: &logthis('<font color="yellow" Invalid reinit request for '.$process
941: ."</font>");
942: return "error:Invalid process identifier $process";
943: }
1.145 foxr 944: return 'ok';
945: }
1.168 foxr 946: # Validate a line in a configuration file edit script:
947: # Validation includes:
948: # - Ensuring the command is valid.
949: # - Ensuring the command has sufficient parameters
950: # Parameters:
951: # scriptline - A line to validate (\n has been stripped for what it's worth).
1.167 foxr 952: #
1.168 foxr 953: # Return:
954: # 0 - Invalid scriptline.
955: # 1 - Valid scriptline
956: # NOTE:
957: # Only the command syntax is checked, not the executability of the
958: # command.
959: #
960: sub isValidEditCommand {
961: my $scriptline = shift;
962:
963: # Line elements are pipe separated:
964:
965: my ($command, $key, $newline) = split(/\|/, $scriptline);
966: &logthis('<font color="green"> isValideditCommand checking: '.
967: "Command = '$command', Key = '$key', Newline = '$newline' </font>\n");
968:
969: if ($command eq "delete") {
970: #
971: # key with no newline.
972: #
973: if( ($key eq "") || ($newline ne "")) {
974: return 0; # Must have key but no newline.
975: } else {
976: return 1; # Valid syntax.
977: }
1.169 foxr 978: } elsif ($command eq "replace") {
1.168 foxr 979: #
980: # key and newline:
981: #
982: if (($key eq "") || ($newline eq "")) {
983: return 0;
984: } else {
985: return 1;
986: }
1.169 foxr 987: } elsif ($command eq "append") {
988: if (($key ne "") && ($newline eq "")) {
989: return 1;
990: } else {
991: return 0;
992: }
1.168 foxr 993: } else {
994: return 0; # Invalid command.
995: }
996: return 0; # Should not get here!!!
997: }
1.169 foxr 998: #
999: # ApplyEdit - Applies an edit command to a line in a configuration
1000: # file. It is the caller's responsiblity to validate the
1001: # edit line.
1002: # Parameters:
1003: # $directive - A single edit directive to apply.
1004: # Edit directives are of the form:
1005: # append|newline - Appends a new line to the file.
1006: # replace|key|newline - Replaces the line with key value 'key'
1007: # delete|key - Deletes the line with key value 'key'.
1008: # $editor - A config file editor object that contains the
1009: # file being edited.
1010: #
1011: sub ApplyEdit {
1.192 foxr 1012:
1013: my ($directive, $editor) = @_;
1.169 foxr 1014:
1015: # Break the directive down into its command and its parameters
1016: # (at most two at this point. The meaning of the parameters, if in fact
1017: # they exist depends on the command).
1018:
1019: my ($command, $p1, $p2) = split(/\|/, $directive);
1020:
1021: if($command eq "append") {
1022: $editor->Append($p1); # p1 - key p2 null.
1023: } elsif ($command eq "replace") {
1024: $editor->ReplaceLine($p1, $p2); # p1 - key p2 = newline.
1025: } elsif ($command eq "delete") {
1026: $editor->DeleteLine($p1); # p1 - key p2 null.
1027: } else { # Should not get here!!!
1028: die "Invalid command given to ApplyEdit $command"
1029: }
1030: }
1031: #
1032: # AdjustOurHost:
1033: # Adjusts a host file stored in a configuration file editor object
1034: # for the true IP address of this host. This is necessary for hosts
1035: # that live behind a firewall.
1036: # Those hosts have a publicly distributed IP of the firewall, but
1037: # internally must use their actual IP. We assume that a given
1038: # host only has a single IP interface for now.
1039: # Formal Parameters:
1040: # editor - The configuration file editor to adjust. This
1041: # editor is assumed to contain a hosts.tab file.
1042: # Strategy:
1043: # - Figure out our hostname.
1044: # - Lookup the entry for this host.
1045: # - Modify the line to contain our IP
1046: # - Do a replace for this host.
1047: sub AdjustOurHost {
1048: my $editor = shift;
1049:
1050: # figure out who I am.
1051:
1052: my $myHostName = $perlvar{'lonHostID'}; # LonCAPA hostname.
1053:
1054: # Get my host file entry.
1055:
1056: my $ConfigLine = $editor->Find($myHostName);
1057: if(! (defined $ConfigLine)) {
1058: die "AdjustOurHost - no entry for me in hosts file $myHostName";
1059: }
1060: # figure out my IP:
1061: # Use the config line to get my hostname.
1062: # Use gethostbyname to translate that into an IP address.
1063: #
1.338 albertel 1064: my ($id,$domain,$role,$name,$maxcon,$idleto,$mincon) = split(/:/,$ConfigLine);
1.169 foxr 1065: #
1066: # Reassemble the config line from the elements in the list.
1067: # Note that if the loncnew items were not present before, they will
1068: # be now even if they would be empty
1069: #
1070: my $newConfigLine = $id;
1.338 albertel 1071: foreach my $item ($domain, $role, $name, $maxcon, $idleto, $mincon) {
1.169 foxr 1072: $newConfigLine .= ":".$item;
1073: }
1074: # Replace the line:
1075:
1076: $editor->ReplaceLine($id, $newConfigLine);
1077:
1078: }
1079: #
1080: # ReplaceConfigFile:
1081: # Replaces a configuration file with the contents of a
1082: # configuration file editor object.
1083: # This is done by:
1084: # - Copying the target file to <filename>.old
1085: # - Writing the new file to <filename>.tmp
1086: # - Moving <filename.tmp> -> <filename>
1087: # This laborious process ensures that the system is never without
1088: # a configuration file that's at least valid (even if the contents
1089: # may be dated).
1090: # Parameters:
1091: # filename - Name of the file to modify... this is a full path.
1092: # editor - Editor containing the file.
1093: #
1094: sub ReplaceConfigFile {
1.192 foxr 1095:
1096: my ($filename, $editor) = @_;
1.168 foxr 1097:
1.169 foxr 1098: CopyFile ($filename, $filename.".old");
1099:
1100: my $contents = $editor->Get(); # Get the contents of the file.
1101:
1102: InstallFile($filename, $contents);
1103: }
1.168 foxr 1104: #
1105: #
1106: # Called to edit a configuration table file
1.167 foxr 1107: # Parameters:
1108: # request - The entire command/request sent by lonc or lonManage
1109: # Return:
1110: # The reply to send to the client.
1.168 foxr 1111: #
1.167 foxr 1112: sub EditFile {
1113: my $request = shift;
1114:
1115: # Split the command into it's pieces: edit:filetype:script
1116:
1.339 albertel 1117: my ($cmd, $filetype, $script) = split(/:/, $request,3); # : in script
1.167 foxr 1118:
1119: # Check the pre-coditions for success:
1120:
1.339 albertel 1121: if($cmd != "edit") { # Something is amiss afoot alack.
1.167 foxr 1122: return "error:edit request detected, but request != 'edit'\n";
1123: }
1124: if( ($filetype ne "hosts") &&
1125: ($filetype ne "domain")) {
1126: return "error:edit requested with invalid file specifier: $filetype \n";
1127: }
1128:
1129: # Split the edit script and check it's validity.
1.168 foxr 1130:
1131: my @scriptlines = split(/\n/, $script); # one line per element.
1132: my $linecount = scalar(@scriptlines);
1133: for(my $i = 0; $i < $linecount; $i++) {
1134: chomp($scriptlines[$i]);
1135: if(!isValidEditCommand($scriptlines[$i])) {
1136: return "error:edit with bad script line: '$scriptlines[$i]' \n";
1137: }
1138: }
1.145 foxr 1139:
1.167 foxr 1140: # Execute the edit operation.
1.169 foxr 1141: # - Create a config file editor for the appropriate file and
1142: # - execute each command in the script:
1143: #
1144: my $configfile = ConfigFileFromSelector($filetype);
1145: if (!(defined $configfile)) {
1146: return "refused\n";
1147: }
1148: my $editor = ConfigFileEdit->new($configfile);
1.167 foxr 1149:
1.169 foxr 1150: for (my $i = 0; $i < $linecount; $i++) {
1151: ApplyEdit($scriptlines[$i], $editor);
1152: }
1153: # If the file is the host file, ensure that our host is
1154: # adjusted to have our ip:
1155: #
1156: if($filetype eq "host") {
1157: AdjustOurHost($editor);
1158: }
1159: # Finally replace the current file with our file.
1160: #
1161: ReplaceConfigFile($configfile, $editor);
1.167 foxr 1162:
1163: return "ok\n";
1164: }
1.207 foxr 1165:
1.255 foxr 1166: # read_profile
1167: #
1168: # Returns a set of specific entries from a user's profile file.
1169: # this is a utility function that is used by both get_profile_entry and
1170: # get_profile_entry_encrypted.
1171: #
1172: # Parameters:
1173: # udom - Domain in which the user exists.
1174: # uname - User's account name (loncapa account)
1175: # namespace - The profile namespace to open.
1176: # what - A set of & separated queries.
1177: # Returns:
1178: # If all ok: - The string that needs to be shipped back to the user.
1179: # If failure - A string that starts with error: followed by the failure
1180: # reason.. note that this probabyl gets shipped back to the
1181: # user as well.
1182: #
1183: sub read_profile {
1184: my ($udom, $uname, $namespace, $what) = @_;
1185:
1186: my $hashref = &tie_user_hash($udom, $uname, $namespace,
1187: &GDBM_READER());
1188: if ($hashref) {
1189: my @queries=split(/\&/,$what);
1.440 raeburn 1190: if ($namespace eq 'roles') {
1191: @queries = map { &unescape($_); } @queries;
1192: }
1.255 foxr 1193: my $qresult='';
1194:
1195: for (my $i=0;$i<=$#queries;$i++) {
1196: $qresult.="$hashref->{$queries[$i]}&"; # Presumably failure gives empty string.
1197: }
1198: $qresult=~s/\&$//; # Remove trailing & from last lookup.
1.311 albertel 1199: if (&untie_user_hash($hashref)) {
1.255 foxr 1200: return $qresult;
1201: } else {
1202: return "error: ".($!+0)." untie (GDBM) Failed";
1203: }
1204: } else {
1205: if ($!+0 == 2) {
1206: return "error:No such file or GDBM reported bad block error";
1207: } else {
1208: return "error: ".($!+0)." tie (GDBM) Failed";
1209: }
1210: }
1211:
1212: }
1.214 foxr 1213: #--------------------- Request Handlers --------------------------------------------
1214: #
1.215 foxr 1215: # By convention each request handler registers itself prior to the sub
1216: # declaration:
1.214 foxr 1217: #
1218:
1.216 foxr 1219: #++
1220: #
1.214 foxr 1221: # Handles ping requests.
1222: # Parameters:
1223: # $cmd - the actual keyword that invoked us.
1224: # $tail - the tail of the request that invoked us.
1225: # $replyfd- File descriptor connected to the client
1226: # Implicit Inputs:
1227: # $currenthostid - Global variable that carries the name of the host we are
1228: # known as.
1229: # Returns:
1230: # 1 - Ok to continue processing.
1231: # 0 - Program should exit.
1232: # Side effects:
1233: # Reply information is sent to the client.
1234: sub ping_handler {
1235: my ($cmd, $tail, $client) = @_;
1236: Debug("$cmd $tail $client .. $currenthostid:");
1237:
1.387 albertel 1238: Reply( $client,\$currenthostid,"$cmd:$tail");
1.214 foxr 1239:
1240: return 1;
1241: }
1242: ®ister_handler("ping", \&ping_handler, 0, 1, 1); # Ping unencoded, client or manager.
1243:
1.216 foxr 1244: #++
1.215 foxr 1245: #
1246: # Handles pong requests. Pong replies with our current host id, and
1247: # the results of a ping sent to us via our lonc.
1248: #
1249: # Parameters:
1250: # $cmd - the actual keyword that invoked us.
1251: # $tail - the tail of the request that invoked us.
1252: # $replyfd- File descriptor connected to the client
1253: # Implicit Inputs:
1254: # $currenthostid - Global variable that carries the name of the host we are
1255: # connected to.
1256: # Returns:
1257: # 1 - Ok to continue processing.
1258: # 0 - Program should exit.
1259: # Side effects:
1260: # Reply information is sent to the client.
1261: sub pong_handler {
1262: my ($cmd, $tail, $replyfd) = @_;
1263:
1.365 albertel 1264: my $reply=&Apache::lonnet::reply("ping",$clientname);
1.215 foxr 1265: &Reply( $replyfd, "$currenthostid:$reply\n", "$cmd:$tail");
1266: return 1;
1267: }
1268: ®ister_handler("pong", \&pong_handler, 0, 1, 1); # Pong unencoded, client or manager
1269:
1.216 foxr 1270: #++
1271: # Called to establish an encrypted session key with the remote client.
1272: # Note that with secure lond, in most cases this function is never
1273: # invoked. Instead, the secure session key is established either
1274: # via a local file that's locked down tight and only lives for a short
1275: # time, or via an ssl tunnel...and is generated from a bunch-o-random
1276: # bits from /dev/urandom, rather than the predictable pattern used by
1277: # by this sub. This sub is only used in the old-style insecure
1278: # key negotiation.
1279: # Parameters:
1280: # $cmd - the actual keyword that invoked us.
1281: # $tail - the tail of the request that invoked us.
1282: # $replyfd- File descriptor connected to the client
1283: # Implicit Inputs:
1284: # $currenthostid - Global variable that carries the name of the host
1285: # known as.
1.448 raeburn 1286: # $clientname - Global variable that carries the name of the host we're connected to.
1.216 foxr 1287: # Returns:
1288: # 1 - Ok to continue processing.
1289: # 0 - Program should exit.
1290: # Implicit Outputs:
1291: # Reply information is sent to the client.
1292: # $cipher is set with a reference to a new IDEA encryption object.
1293: #
1294: sub establish_key_handler {
1295: my ($cmd, $tail, $replyfd) = @_;
1296:
1297: my $buildkey=time.$$.int(rand 100000);
1298: $buildkey=~tr/1-6/A-F/;
1299: $buildkey=int(rand 100000).$buildkey.int(rand 100000);
1300: my $key=$currenthostid.$clientname;
1301: $key=~tr/a-z/A-Z/;
1302: $key=~tr/G-P/0-9/;
1303: $key=~tr/Q-Z/0-9/;
1304: $key=$key.$buildkey.$key.$buildkey.$key.$buildkey;
1305: $key=substr($key,0,32);
1306: my $cipherkey=pack("H32",$key);
1307: $cipher=new IDEA $cipherkey;
1.387 albertel 1308: &Reply($replyfd, \$buildkey, "$cmd:$tail");
1.216 foxr 1309:
1310: return 1;
1311:
1312: }
1313: ®ister_handler("ekey", \&establish_key_handler, 0, 1,1);
1314:
1.217 foxr 1315: # Handler for the load command. Returns the current system load average
1316: # to the requestor.
1317: #
1318: # Parameters:
1319: # $cmd - the actual keyword that invoked us.
1320: # $tail - the tail of the request that invoked us.
1321: # $replyfd- File descriptor connected to the client
1322: # Implicit Inputs:
1323: # $currenthostid - Global variable that carries the name of the host
1324: # known as.
1.448 raeburn 1325: # $clientname - Global variable that carries the name of the host we're connected to.
1.217 foxr 1326: # Returns:
1327: # 1 - Ok to continue processing.
1328: # 0 - Program should exit.
1329: # Side effects:
1330: # Reply information is sent to the client.
1331: sub load_handler {
1332: my ($cmd, $tail, $replyfd) = @_;
1333:
1.463 foxr 1334:
1335:
1.217 foxr 1336: # Get the load average from /proc/loadavg and calculate it as a percentage of
1337: # the allowed load limit as set by the perl global variable lonLoadLim
1338:
1339: my $loadavg;
1340: my $loadfile=IO::File->new('/proc/loadavg');
1341:
1342: $loadavg=<$loadfile>;
1343: $loadavg =~ s/\s.*//g; # Extract the first field only.
1344:
1345: my $loadpercent=100*$loadavg/$perlvar{'lonLoadLim'};
1346:
1.387 albertel 1347: &Reply( $replyfd, \$loadpercent, "$cmd:$tail");
1.217 foxr 1348:
1349: return 1;
1350: }
1.263 albertel 1351: ®ister_handler("load", \&load_handler, 0, 1, 0);
1.217 foxr 1352:
1353: #
1354: # Process the userload request. This sub returns to the client the current
1355: # user load average. It can be invoked either by clients or managers.
1356: #
1357: # Parameters:
1358: # $cmd - the actual keyword that invoked us.
1359: # $tail - the tail of the request that invoked us.
1360: # $replyfd- File descriptor connected to the client
1361: # Implicit Inputs:
1362: # $currenthostid - Global variable that carries the name of the host
1363: # known as.
1.448 raeburn 1364: # $clientname - Global variable that carries the name of the host we're connected to.
1.217 foxr 1365: # Returns:
1366: # 1 - Ok to continue processing.
1367: # 0 - Program should exit
1368: # Implicit inputs:
1369: # whatever the userload() function requires.
1370: # Implicit outputs:
1371: # the reply is written to the client.
1372: #
1373: sub user_load_handler {
1374: my ($cmd, $tail, $replyfd) = @_;
1375:
1.365 albertel 1376: my $userloadpercent=&Apache::lonnet::userload();
1.387 albertel 1377: &Reply($replyfd, \$userloadpercent, "$cmd:$tail");
1.217 foxr 1378:
1379: return 1;
1380: }
1.263 albertel 1381: ®ister_handler("userload", \&user_load_handler, 0, 1, 0);
1.217 foxr 1382:
1.218 foxr 1383: # Process a request for the authorization type of a user:
1384: # (userauth).
1385: #
1386: # Parameters:
1387: # $cmd - the actual keyword that invoked us.
1388: # $tail - the tail of the request that invoked us.
1389: # $replyfd- File descriptor connected to the client
1390: # Returns:
1391: # 1 - Ok to continue processing.
1392: # 0 - Program should exit
1393: # Implicit outputs:
1394: # The user authorization type is written to the client.
1395: #
1396: sub user_authorization_type {
1397: my ($cmd, $tail, $replyfd) = @_;
1398:
1399: my $userinput = "$cmd:$tail";
1400:
1401: # Pull the domain and username out of the command tail.
1.222 foxr 1402: # and call get_auth_type to determine the authentication type.
1.218 foxr 1403:
1404: my ($udom,$uname)=split(/:/,$tail);
1.222 foxr 1405: my $result = &get_auth_type($udom, $uname);
1.218 foxr 1406: if($result eq "nouser") {
1407: &Failure( $replyfd, "unknown_user\n", $userinput);
1408: } else {
1409: #
1.222 foxr 1410: # We only want to pass the second field from get_auth_type
1.218 foxr 1411: # for ^krb.. otherwise we'll be handing out the encrypted
1412: # password for internals e.g.
1413: #
1414: my ($type,$otherinfo) = split(/:/,$result);
1415: if($type =~ /^krb/) {
1416: $type = $result;
1.269 raeburn 1417: } else {
1418: $type .= ':';
1419: }
1.387 albertel 1420: &Reply( $replyfd, \$type, $userinput);
1.218 foxr 1421: }
1422:
1423: return 1;
1424: }
1425: ®ister_handler("currentauth", \&user_authorization_type, 1, 1, 0);
1426:
1427: # Process a request by a manager to push a hosts or domain table
1428: # to us. We pick apart the command and pass it on to the subs
1429: # that already exist to do this.
1430: #
1431: # Parameters:
1432: # $cmd - the actual keyword that invoked us.
1433: # $tail - the tail of the request that invoked us.
1434: # $client - File descriptor connected to the client
1435: # Returns:
1436: # 1 - Ok to continue processing.
1437: # 0 - Program should exit
1438: # Implicit Output:
1439: # a reply is written to the client.
1440: sub push_file_handler {
1441: my ($cmd, $tail, $client) = @_;
1.412 foxr 1442: &Debug("In push file handler");
1.218 foxr 1443: my $userinput = "$cmd:$tail";
1444:
1445: # At this time we only know that the IP of our partner is a valid manager
1446: # the code below is a hook to do further authentication (e.g. to resolve
1447: # spoofing).
1448:
1449: my $cert = &GetCertificate($userinput);
1.412 foxr 1450: if(&ValidManager($cert)) {
1451: &Debug("Valid manager: $client");
1.218 foxr 1452:
1453: # Now presumably we have the bona fides of both the peer host and the
1454: # process making the request.
1455:
1456: my $reply = &PushFile($userinput);
1.387 albertel 1457: &Reply($client, \$reply, $userinput);
1.218 foxr 1458:
1459: } else {
1.412 foxr 1460: &logthis("push_file_handler $client is not valid");
1.218 foxr 1461: &Failure( $client, "refused\n", $userinput);
1462: }
1.219 foxr 1463: return 1;
1.218 foxr 1464: }
1465: ®ister_handler("pushfile", \&push_file_handler, 1, 0, 1);
1466:
1.399 raeburn 1467: # The du_handler routine should be considered obsolete and is retained
1468: # for communication with legacy servers. Please see the du2_handler.
1.243 banghart 1469: #
1.399 raeburn 1470: # du - list the disk usage of a directory recursively.
1.243 banghart 1471: #
1472: # note: stolen code from the ls file handler
1473: # under construction by Rick Banghart
1474: # .
1475: # Parameters:
1476: # $cmd - The command that dispatched us (du).
1477: # $ududir - The directory path to list... I'm not sure what this
1478: # is relative as things like ls:. return e.g.
1479: # no_such_dir.
1480: # $client - Socket open on the client.
1481: # Returns:
1482: # 1 - indicating that the daemon should not disconnect.
1483: # Side Effects:
1484: # The reply is written to $client.
1485: #
1486: sub du_handler {
1487: my ($cmd, $ududir, $client) = @_;
1.339 albertel 1488: ($ududir) = split(/:/,$ududir); # Make 'telnet' testing easier.
1.251 foxr 1489: my $userinput = "$cmd:$ududir";
1490:
1.245 albertel 1491: if ($ududir=~/\.\./ || $ududir!~m|^/home/httpd/|) {
1492: &Failure($client,"refused\n","$cmd:$ududir");
1493: return 1;
1494: }
1.249 foxr 1495: # Since $ududir could have some nasties in it,
1496: # we will require that ududir is a valid
1497: # directory. Just in case someone tries to
1498: # slip us a line like .;(cd /home/httpd rm -rf*)
1499: # etc.
1500: #
1501: if (-d $ududir) {
1.292 albertel 1502: my $total_size=0;
1503: my $code=sub {
1504: if ($_=~/\.\d+\./) { return;}
1505: if ($_=~/\.meta$/) { return;}
1.362 albertel 1506: if (-d $_) { return;}
1.292 albertel 1507: $total_size+=(stat($_))[7];
1508: };
1.295 raeburn 1509: chdir($ududir);
1.292 albertel 1510: find($code,$ududir);
1511: $total_size=int($total_size/1024);
1.387 albertel 1512: &Reply($client,\$total_size,"$cmd:$ududir");
1.249 foxr 1513: } else {
1.251 foxr 1514: &Failure($client, "bad_directory:$ududir\n","$cmd:$ududir");
1.249 foxr 1515: }
1.243 banghart 1516: return 1;
1517: }
1518: ®ister_handler("du", \&du_handler, 0, 1, 0);
1.218 foxr 1519:
1.399 raeburn 1520: # Please also see the du_handler, which is obsoleted by du2.
1521: # du2_handler differs from du_handler in that required path to directory
1522: # provided by &propath() is prepended in the handler instead of on the
1523: # client side.
1.239 foxr 1524: #
1.399 raeburn 1525: # du2 - list the disk usage of a directory recursively.
1526: #
1527: # Parameters:
1528: # $cmd - The command that dispatched us (du).
1529: # $tail - The tail of the request that invoked us.
1530: # $tail is a : separated list of the following:
1531: # - $ududir - directory path to list (before prepending)
1532: # - $getpropath = 1 if &propath() should prepend
1533: # - $uname - username to use for &propath or user dir
1534: # - $udom - domain to use for &propath or user dir
1535: # All are escaped.
1536: # $client - Socket open on the client.
1537: # Returns:
1538: # 1 - indicating that the daemon should not disconnect.
1539: # Side Effects:
1540: # The reply is written to $client.
1541: #
1542:
1543: sub du2_handler {
1544: my ($cmd, $tail, $client) = @_;
1545: my ($ududir,$getpropath,$uname,$udom) = map { &unescape($_) } (split(/:/, $tail));
1546: my $userinput = "$cmd:$tail";
1547: if (($ududir=~/\.\./) || (($ududir!~m|^/home/httpd/|) && (!$getpropath))) {
1548: &Failure($client,"refused\n","$cmd:$tail");
1549: return 1;
1550: }
1551: if ($getpropath) {
1552: if (($uname =~ /^$LONCAPA::match_name$/) && ($udom =~ /^$LONCAPA::match_domain$/)) {
1553: $ududir = &propath($udom,$uname).'/'.$ududir;
1554: } else {
1555: &Failure($client,"refused\n","$cmd:$tail");
1556: return 1;
1557: }
1558: }
1559: # Since $ududir could have some nasties in it,
1560: # we will require that ududir is a valid
1561: # directory. Just in case someone tries to
1562: # slip us a line like .;(cd /home/httpd rm -rf*)
1563: # etc.
1564: #
1565: if (-d $ududir) {
1566: my $total_size=0;
1567: my $code=sub {
1568: if ($_=~/\.\d+\./) { return;}
1569: if ($_=~/\.meta$/) { return;}
1570: if (-d $_) { return;}
1571: $total_size+=(stat($_))[7];
1572: };
1573: chdir($ududir);
1574: find($code,$ududir);
1575: $total_size=int($total_size/1024);
1576: &Reply($client,\$total_size,"$cmd:$ududir");
1577: } else {
1578: &Failure($client, "bad_directory:$ududir\n","$cmd:$tail");
1579: }
1580: return 1;
1581: }
1582: ®ister_handler("du2", \&du2_handler, 0, 1, 0);
1583:
1584: #
1585: # The ls_handler routine should be considered obsolete and is retained
1586: # for communication with legacy servers. Please see the ls3_handler.
1.280 matthew 1587: #
1.239 foxr 1588: # ls - list the contents of a directory. For each file in the
1589: # selected directory the filename followed by the full output of
1590: # the stat function is returned. The returned info for each
1591: # file are separated by ':'. The stat fields are separated by &'s.
1.529 raeburn 1592: #
1593: # If the requested path contains /../ or is:
1594: #
1595: # 1. for a directory, and the path does not begin with one of:
1.530 raeburn 1596: # (a) /home/httpd/html/res/<domain>
1.529 raeburn 1597: # (b) /home/httpd/html/res/userfiles/
1598: # (c) /home/httpd/lonUsers/<domain>/<1>/<2>/<3>/<username>/userfiles
1599: # or is:
1600: #
1601: # 2. for a file, and the path (after prepending) does not begin with:
1602: # /home/httpd/lonUsers/<domain>/<1>/<2>/<3>/<username>/
1603: #
1604: # the response will be "refused".
1605: #
1.239 foxr 1606: # Parameters:
1607: # $cmd - The command that dispatched us (ls).
1608: # $ulsdir - The directory path to list... I'm not sure what this
1609: # is relative as things like ls:. return e.g.
1610: # no_such_dir.
1611: # $client - Socket open on the client.
1612: # Returns:
1613: # 1 - indicating that the daemon should not disconnect.
1614: # Side Effects:
1615: # The reply is written to $client.
1616: #
1617: sub ls_handler {
1.280 matthew 1618: # obsoleted by ls2_handler
1.239 foxr 1619: my ($cmd, $ulsdir, $client) = @_;
1620:
1621: my $userinput = "$cmd:$ulsdir";
1622:
1623: my $obs;
1624: my $rights;
1625: my $ulsout='';
1626: my $ulsfn;
1.529 raeburn 1627: if ($ulsdir =~m{/\.\./}) {
1628: &Failure($client,"refused\n",$userinput);
1629: return 1;
1630: }
1.239 foxr 1631: if (-e $ulsdir) {
1632: if(-d $ulsdir) {
1.530 raeburn 1633: unless (($ulsdir =~ m{/home/httpd/html/(res/$LONCAPA::match_domain|userfiles/)}) ||
1.529 raeburn 1634: ($ulsdir =~ m{/home/httpd/lonUsers/$LONCAPA::match_domain(?:/[\w\-.@]){3}/$LONCAPA::match_username/userfiles/})) {
1635: &Failure($client,"refused\n",$userinput);
1636: return 1;
1637: }
1.239 foxr 1638: if (opendir(LSDIR,$ulsdir)) {
1639: while ($ulsfn=readdir(LSDIR)) {
1.291 albertel 1640: undef($obs);
1641: undef($rights);
1.239 foxr 1642: my @ulsstats=stat($ulsdir.'/'.$ulsfn);
1643: #We do some obsolete checking here
1644: if(-e $ulsdir.'/'.$ulsfn.".meta") {
1645: open(FILE, $ulsdir.'/'.$ulsfn.".meta");
1646: my @obsolete=<FILE>;
1647: foreach my $obsolete (@obsolete) {
1.301 www 1648: if($obsolete =~ m/(<obsolete>)(on|1)/) { $obs = 1; }
1.239 foxr 1649: if($obsolete =~ m|(<copyright>)(default)|) { $rights = 1; }
1650: }
1651: }
1652: $ulsout.=$ulsfn.'&'.join('&',@ulsstats);
1653: if($obs eq '1') { $ulsout.="&1"; }
1654: else { $ulsout.="&0"; }
1655: if($rights eq '1') { $ulsout.="&1:"; }
1656: else { $ulsout.="&0:"; }
1657: }
1658: closedir(LSDIR);
1659: }
1660: } else {
1.529 raeburn 1661: unless ($ulsdir =~ m{/home/httpd/lonUsers/$LONCAPA::match_domain(?:/[\w\-.@]){3}/$LONCAPA::match_username/}) {
1662: &Failure($client,"refused\n",$userinput);
1663: return 1;
1664: }
1.239 foxr 1665: my @ulsstats=stat($ulsdir);
1666: $ulsout.=$ulsfn.'&'.join('&',@ulsstats).':';
1667: }
1668: } else {
1669: $ulsout='no_such_dir';
1670: }
1671: if ($ulsout eq '') { $ulsout='empty'; }
1.387 albertel 1672: &Reply($client, \$ulsout, $userinput); # This supports debug logging.
1.239 foxr 1673:
1674: return 1;
1675:
1676: }
1677: ®ister_handler("ls", \&ls_handler, 0, 1, 0);
1678:
1.399 raeburn 1679: # The ls2_handler routine should be considered obsolete and is retained
1680: # for communication with legacy servers. Please see the ls3_handler.
1681: # Please also see the ls_handler, which was itself obsoleted by ls2.
1.280 matthew 1682: # ls2_handler differs from ls_handler in that it escapes its return
1683: # values before concatenating them together with ':'s.
1684: #
1685: # ls2 - list the contents of a directory. For each file in the
1686: # selected directory the filename followed by the full output of
1687: # the stat function is returned. The returned info for each
1688: # file are separated by ':'. The stat fields are separated by &'s.
1.529 raeburn 1689: #
1690: # If the requested path contains /../ or is:
1691: #
1692: # 1. for a directory, and the path does not begin with one of:
1.530 raeburn 1693: # (a) /home/httpd/html/res/<domain>
1.529 raeburn 1694: # (b) /home/httpd/html/res/userfiles/
1695: # (c) /home/httpd/lonUsers/<domain>/<1>/<2>/<3>/<username>/userfiles
1696: # or is:
1697: #
1698: # 2. for a file, and the path (after prepending) does not begin with:
1699: # /home/httpd/lonUsers/<domain>/<1>/<2>/<3>/<username>/
1700: #
1701: # the response will be "refused".
1702: #
1.280 matthew 1703: # Parameters:
1704: # $cmd - The command that dispatched us (ls).
1705: # $ulsdir - The directory path to list... I'm not sure what this
1706: # is relative as things like ls:. return e.g.
1707: # no_such_dir.
1708: # $client - Socket open on the client.
1709: # Returns:
1710: # 1 - indicating that the daemon should not disconnect.
1711: # Side Effects:
1712: # The reply is written to $client.
1713: #
1714: sub ls2_handler {
1715: my ($cmd, $ulsdir, $client) = @_;
1716:
1717: my $userinput = "$cmd:$ulsdir";
1718:
1719: my $obs;
1720: my $rights;
1721: my $ulsout='';
1722: my $ulsfn;
1.529 raeburn 1723: if ($ulsdir =~m{/\.\./}) {
1724: &Failure($client,"refused\n",$userinput);
1725: return 1;
1726: }
1.280 matthew 1727: if (-e $ulsdir) {
1728: if(-d $ulsdir) {
1.530 raeburn 1729: unless (($ulsdir =~ m{/home/httpd/html/(res/$LONCAPA::match_domain|userfiles/)}) ||
1.529 raeburn 1730: ($ulsdir =~ m{/home/httpd/lonUsers/$LONCAPA::match_domain(?:/[\w\-.@]){3}/$LONCAPA::match_username/userfiles/})) {
1731: &Failure($client,"refused\n","$userinput");
1732: return 1;
1733: }
1.280 matthew 1734: if (opendir(LSDIR,$ulsdir)) {
1735: while ($ulsfn=readdir(LSDIR)) {
1.291 albertel 1736: undef($obs);
1737: undef($rights);
1.280 matthew 1738: my @ulsstats=stat($ulsdir.'/'.$ulsfn);
1739: #We do some obsolete checking here
1740: if(-e $ulsdir.'/'.$ulsfn.".meta") {
1741: open(FILE, $ulsdir.'/'.$ulsfn.".meta");
1742: my @obsolete=<FILE>;
1743: foreach my $obsolete (@obsolete) {
1.301 www 1744: if($obsolete =~ m/(<obsolete>)(on|1)/) { $obs = 1; }
1.280 matthew 1745: if($obsolete =~ m|(<copyright>)(default)|) {
1746: $rights = 1;
1747: }
1748: }
1749: }
1750: my $tmp = $ulsfn.'&'.join('&',@ulsstats);
1751: if ($obs eq '1') { $tmp.="&1"; } else { $tmp.="&0"; }
1752: if ($rights eq '1') { $tmp.="&1"; } else { $tmp.="&0"; }
1753: $ulsout.= &escape($tmp).':';
1754: }
1755: closedir(LSDIR);
1756: }
1757: } else {
1.529 raeburn 1758: unless ($ulsdir =~ m{/home/httpd/lonUsers/$LONCAPA::match_domain(?:/[\w\-.@]){3}/$LONCAPA::match_username/}) {
1759: &Failure($client,"refused\n",$userinput);
1760: return 1;
1761: }
1.280 matthew 1762: my @ulsstats=stat($ulsdir);
1763: $ulsout.=$ulsfn.'&'.join('&',@ulsstats).':';
1764: }
1765: } else {
1766: $ulsout='no_such_dir';
1767: }
1768: if ($ulsout eq '') { $ulsout='empty'; }
1.387 albertel 1769: &Reply($client, \$ulsout, $userinput); # This supports debug logging.
1.280 matthew 1770: return 1;
1771: }
1772: ®ister_handler("ls2", \&ls2_handler, 0, 1, 0);
1.399 raeburn 1773: #
1774: # ls3 - list the contents of a directory. For each file in the
1775: # selected directory the filename followed by the full output of
1776: # the stat function is returned. The returned info for each
1777: # file are separated by ':'. The stat fields are separated by &'s.
1.529 raeburn 1778: #
1779: # If the requested path (after prepending) contains /../ or is:
1780: #
1781: # 1. for a directory, and the path does not begin with one of:
1.530 raeburn 1782: # (a) /home/httpd/html/res/<domain>
1.529 raeburn 1783: # (b) /home/httpd/html/res/userfiles/
1784: # (c) /home/httpd/lonUsers/<domain>/<1>/<2>/<3>/<username>/userfiles
1785: # (d) /home/httpd/html/priv/<domain>/ and client is the homeserver
1786: #
1.530 raeburn 1787: # or is:
1.529 raeburn 1788: #
1789: # 2. for a file, and the path (after prepending) does not begin with:
1790: # /home/httpd/lonUsers/<domain>/<1>/<2>/<3>/<username>/
1791: #
1792: # the response will be "refused".
1793: #
1.399 raeburn 1794: # Parameters:
1795: # $cmd - The command that dispatched us (ls).
1796: # $tail - The tail of the request that invoked us.
1797: # $tail is a : separated list of the following:
1798: # - $ulsdir - directory path to list (before prepending)
1799: # - $getpropath = 1 if &propath() should prepend
1800: # - $getuserdir = 1 if path to user dir in lonUsers should
1801: # prepend
1802: # - $alternate_root - path to prepend
1803: # - $uname - username to use for &propath or user dir
1804: # - $udom - domain to use for &propath or user dir
1805: # All of these except $getpropath and &getuserdir are escaped.
1806: # no_such_dir.
1807: # $client - Socket open on the client.
1808: # Returns:
1809: # 1 - indicating that the daemon should not disconnect.
1810: # Side Effects:
1811: # The reply is written to $client.
1812: #
1813:
1814: sub ls3_handler {
1815: my ($cmd, $tail, $client) = @_;
1816: my $userinput = "$cmd:$tail";
1817: my ($ulsdir,$getpropath,$getuserdir,$alternate_root,$uname,$udom) =
1818: split(/:/,$tail);
1819: if (defined($ulsdir)) {
1820: $ulsdir = &unescape($ulsdir);
1821: }
1822: if (defined($alternate_root)) {
1823: $alternate_root = &unescape($alternate_root);
1824: }
1825: if (defined($uname)) {
1826: $uname = &unescape($uname);
1827: }
1828: if (defined($udom)) {
1829: $udom = &unescape($udom);
1830: }
1831:
1832: my $dir_root = $perlvar{'lonDocRoot'};
1.529 raeburn 1833: if (($getpropath) || ($getuserdir)) {
1.399 raeburn 1834: if (($uname =~ /^$LONCAPA::match_name$/) && ($udom =~ /^$LONCAPA::match_domain$/)) {
1835: $dir_root = &propath($udom,$uname);
1836: $dir_root =~ s/\/$//;
1837: } else {
1.529 raeburn 1838: &Failure($client,"refused\n",$userinput);
1.399 raeburn 1839: return 1;
1840: }
1.400 raeburn 1841: } elsif ($alternate_root ne '') {
1.399 raeburn 1842: $dir_root = $alternate_root;
1843: }
1.408 raeburn 1844: if (($dir_root ne '') && ($dir_root ne '/')) {
1.400 raeburn 1845: if ($ulsdir =~ /^\//) {
1846: $ulsdir = $dir_root.$ulsdir;
1847: } else {
1848: $ulsdir = $dir_root.'/'.$ulsdir;
1849: }
1.399 raeburn 1850: }
1.529 raeburn 1851: if ($ulsdir =~m{/\.\./}) {
1852: &Failure($client,"refused\n",$userinput);
1853: return 1;
1854: }
1855: my $islocal;
1856: my @machine_ids = &Apache::lonnet::current_machine_ids();
1857: if (grep(/^\Q$clientname\E$/,@machine_ids)) {
1858: $islocal = 1;
1859: }
1.399 raeburn 1860: my $obs;
1861: my $rights;
1862: my $ulsout='';
1863: my $ulsfn;
1864: if (-e $ulsdir) {
1865: if(-d $ulsdir) {
1.529 raeburn 1866: unless (($getpropath) || ($getuserdir) ||
1.530 raeburn 1867: ($ulsdir =~ m{/home/httpd/html/(res/$LONCAPA::match_domain|userfiles/)}) ||
1.529 raeburn 1868: ($ulsdir =~ m{/home/httpd/lonUsers/$LONCAPA::match_domain(?:/[\w\-.@]){3}/$LONCAPA::match_username/userfiles/}) ||
1869: (($ulsdir =~ m{/home/httpd/html/priv/$LONCAPA::match_domain/}) && ($islocal))) {
1870: &Failure($client,"refused\n",$userinput);
1871: return 1;
1872: }
1.399 raeburn 1873: if (opendir(LSDIR,$ulsdir)) {
1874: while ($ulsfn=readdir(LSDIR)) {
1875: undef($obs);
1876: undef($rights);
1877: my @ulsstats=stat($ulsdir.'/'.$ulsfn);
1878: #We do some obsolete checking here
1879: if(-e $ulsdir.'/'.$ulsfn.".meta") {
1880: open(FILE, $ulsdir.'/'.$ulsfn.".meta");
1881: my @obsolete=<FILE>;
1882: foreach my $obsolete (@obsolete) {
1883: if($obsolete =~ m/(<obsolete>)(on|1)/) { $obs = 1; }
1884: if($obsolete =~ m|(<copyright>)(default)|) {
1885: $rights = 1;
1886: }
1887: }
1888: }
1889: my $tmp = $ulsfn.'&'.join('&',@ulsstats);
1890: if ($obs eq '1') { $tmp.="&1"; } else { $tmp.="&0"; }
1891: if ($rights eq '1') { $tmp.="&1"; } else { $tmp.="&0"; }
1892: $ulsout.= &escape($tmp).':';
1893: }
1894: closedir(LSDIR);
1895: }
1896: } else {
1.529 raeburn 1897: unless (($getpropath) || ($getuserdir) ||
1898: ($ulsdir =~ m{/home/httpd/lonUsers/$LONCAPA::match_domain(?:/[\w\-.@]){3}/$LONCAPA::match_username/})) {
1899: &Failure($client,"refused\n",$userinput);
1900: return 1;
1901: }
1.399 raeburn 1902: my @ulsstats=stat($ulsdir);
1903: $ulsout.=$ulsfn.'&'.join('&',@ulsstats).':';
1904: }
1905: } else {
1906: $ulsout='no_such_dir';
1.400 raeburn 1907: }
1908: if ($ulsout eq '') { $ulsout='empty'; }
1909: &Reply($client, \$ulsout, $userinput); # This supports debug logging.
1910: return 1;
1.399 raeburn 1911: }
1912: ®ister_handler("ls3", \&ls3_handler, 0, 1, 0);
1.280 matthew 1913:
1.477 raeburn 1914: sub read_lonnet_global {
1915: my ($cmd,$tail,$client) = @_;
1916: my $userinput = "$cmd:$tail";
1917: my $requested = &Apache::lonnet::thaw_unescape($tail);
1918: my $result;
1.480 raeburn 1919: my %packagevars = (
1920: spareid => \%Apache::lonnet::spareid,
1921: perlvar => \%Apache::lonnet::perlvar,
1922: );
1923: my %limit_to = (
1924: perlvar => {
1.531 raeburn 1925: lonOtherAuthen => 1,
1926: lonBalancer => 1,
1927: lonVersion => 1,
1928: lonAdmEMail => 1,
1929: lonSupportEMail => 1,
1930: lonSysEMail => 1,
1931: lonHostID => 1,
1932: lonRole => 1,
1933: lonDefDomain => 1,
1934: lonLoadLim => 1,
1935: lonUserLoadLim => 1,
1.480 raeburn 1936: }
1937: );
1.477 raeburn 1938: if (ref($requested) eq 'HASH') {
1939: foreach my $what (keys(%{$requested})) {
1940: my $response;
1.480 raeburn 1941: my $items = {};
1942: if (exists($packagevars{$what})) {
1943: if (ref($limit_to{$what}) eq 'HASH') {
1944: foreach my $varname (keys(%{$packagevars{$what}})) {
1945: if ($limit_to{$what}{$varname}) {
1946: $items->{$varname} = $packagevars{$what}{$varname};
1947: }
1948: }
1949: } else {
1950: $items = $packagevars{$what};
1.477 raeburn 1951: }
1.480 raeburn 1952: if ($what eq 'perlvar') {
1953: if (!exists($packagevars{$what}{'lonBalancer'})) {
1954: if ($dist =~ /^(centos|rhes|fedora|scientific)/) {
1955: my $othervarref=LONCAPA::Configuration::read_conf('httpd.conf');
1956: if (ref($othervarref) eq 'HASH') {
1957: $items->{'lonBalancer'} = $othervarref->{'lonBalancer'};
1958: }
1959: }
1960: }
1.477 raeburn 1961: }
1.480 raeburn 1962: $response = &Apache::lonnet::freeze_escape($items);
1.477 raeburn 1963: }
1.478 raeburn 1964: $result .= &escape($what).'='.$response.'&';
1.477 raeburn 1965: }
1966: }
1967: $result =~ s/\&$//;
1968: &Reply($client,\$result,$userinput);
1969: return 1;
1970: }
1971: ®ister_handler("readlonnetglobal", \&read_lonnet_global, 0, 1, 0);
1972:
1.479 raeburn 1973: sub server_devalidatecache_handler {
1974: my ($cmd,$tail,$client) = @_;
1975: my $userinput = "$cmd:$tail";
1.503 raeburn 1976: my $items = &unescape($tail);
1977: my @cached = split(/\&/,$items);
1978: foreach my $key (@cached) {
1979: if ($key =~ /:/) {
1980: my ($name,$id) = map { &unescape($_); } split(/:/,$key);
1981: &Apache::lonnet::devalidate_cache_new($name,$id);
1982: }
1983: }
1.479 raeburn 1984: my $result = 'ok';
1985: &Reply($client,\$result,$userinput);
1986: return 1;
1987: }
1.481 raeburn 1988: ®ister_handler("devalidatecache", \&server_devalidatecache_handler, 0, 1, 0);
1.479 raeburn 1989:
1.410 raeburn 1990: sub server_timezone_handler {
1991: my ($cmd,$tail,$client) = @_;
1992: my $userinput = "$cmd:$tail";
1993: my $timezone;
1994: my $clockfile = '/etc/sysconfig/clock'; # Fedora/CentOS/SuSE
1995: my $tzfile = '/etc/timezone'; # Debian/Ubuntu
1996: if (-e $clockfile) {
1997: if (open(my $fh,"<$clockfile")) {
1998: while (<$fh>) {
1999: next if (/^[\#\s]/);
2000: if (/^(?:TIME)?ZONE\s*=\s*['"]?\s*([\w\/]+)/) {
2001: $timezone = $1;
2002: last;
2003: }
2004: }
2005: close($fh);
2006: }
2007: } elsif (-e $tzfile) {
2008: if (open(my $fh,"<$tzfile")) {
2009: $timezone = <$fh>;
2010: close($fh);
2011: chomp($timezone);
2012: if ($timezone =~ m{^Etc/(\w+)$}) {
2013: $timezone = $1;
2014: }
2015: }
2016: }
2017: &Reply($client,\$timezone,$userinput); # This supports debug logging.
2018: return 1;
2019: }
2020: ®ister_handler("servertimezone", \&server_timezone_handler, 0, 1, 0);
2021:
1.413 raeburn 2022: sub server_loncaparev_handler {
2023: my ($cmd,$tail,$client) = @_;
2024: my $userinput = "$cmd:$tail";
2025: &Reply($client,\$perlvar{'lonVersion'},$userinput);
2026: return 1;
2027: }
2028: ®ister_handler("serverloncaparev", \&server_loncaparev_handler, 0, 1, 0);
2029:
1.448 raeburn 2030: sub server_homeID_handler {
2031: my ($cmd,$tail,$client) = @_;
2032: my $userinput = "$cmd:$tail";
2033: &Reply($client,\$perlvar{'lonHostID'},$userinput);
2034: return 1;
2035: }
2036: ®ister_handler("serverhomeID", \&server_homeID_handler, 0, 1, 0);
2037:
1.471 raeburn 2038: sub server_distarch_handler {
2039: my ($cmd,$tail,$client) = @_;
2040: my $userinput = "$cmd:$tail";
2041: my $reply = &distro_and_arch();
2042: &Reply($client,\$reply,$userinput);
2043: return 1;
2044: }
2045: ®ister_handler("serverdistarch", \&server_distarch_handler, 0, 1, 0);
2046:
1.523 raeburn 2047: sub server_certs_handler {
2048: my ($cmd,$tail,$client) = @_;
2049: my $userinput = "$cmd:$tail";
2050: my $result;
2051: my $result = &LONCAPA::Lond::server_certs(\%perlvar);
2052: &Reply($client,\$result,$userinput);
2053: return;
2054: }
2055: ®ister_handler("servercerts", \&server_certs_handler, 0, 1, 0);
2056:
1.218 foxr 2057: # Process a reinit request. Reinit requests that either
2058: # lonc or lond be reinitialized so that an updated
2059: # host.tab or domain.tab can be processed.
2060: #
2061: # Parameters:
2062: # $cmd - the actual keyword that invoked us.
2063: # $tail - the tail of the request that invoked us.
2064: # $client - File descriptor connected to the client
2065: # Returns:
2066: # 1 - Ok to continue processing.
2067: # 0 - Program should exit
2068: # Implicit output:
2069: # a reply is sent to the client.
2070: #
2071: sub reinit_process_handler {
2072: my ($cmd, $tail, $client) = @_;
2073:
2074: my $userinput = "$cmd:$tail";
2075:
2076: my $cert = &GetCertificate($userinput);
2077: if(&ValidManager($cert)) {
2078: chomp($userinput);
2079: my $reply = &ReinitProcess($userinput);
1.387 albertel 2080: &Reply( $client, \$reply, $userinput);
1.218 foxr 2081: } else {
2082: &Failure( $client, "refused\n", $userinput);
2083: }
2084: return 1;
2085: }
2086: ®ister_handler("reinit", \&reinit_process_handler, 1, 0, 1);
2087:
2088: # Process the editing script for a table edit operation.
2089: # the editing operation must be encrypted and requested by
2090: # a manager host.
2091: #
2092: # Parameters:
2093: # $cmd - the actual keyword that invoked us.
2094: # $tail - the tail of the request that invoked us.
2095: # $client - File descriptor connected to the client
2096: # Returns:
2097: # 1 - Ok to continue processing.
2098: # 0 - Program should exit
2099: # Implicit output:
2100: # a reply is sent to the client.
2101: #
2102: sub edit_table_handler {
2103: my ($command, $tail, $client) = @_;
2104:
2105: my $userinput = "$command:$tail";
2106:
2107: my $cert = &GetCertificate($userinput);
2108: if(&ValidManager($cert)) {
2109: my($filetype, $script) = split(/:/, $tail);
2110: if (($filetype eq "hosts") ||
2111: ($filetype eq "domain")) {
2112: if($script ne "") {
2113: &Reply($client, # BUGBUG - EditFile
2114: &EditFile($userinput), # could fail.
2115: $userinput);
2116: } else {
2117: &Failure($client,"refused\n",$userinput);
2118: }
2119: } else {
2120: &Failure($client,"refused\n",$userinput);
2121: }
2122: } else {
2123: &Failure($client,"refused\n",$userinput);
2124: }
2125: return 1;
2126: }
1.263 albertel 2127: ®ister_handler("edit", \&edit_table_handler, 1, 0, 1);
1.218 foxr 2128:
1.220 foxr 2129: #
2130: # Authenticate a user against the LonCAPA authentication
2131: # database. Note that there are several authentication
2132: # possibilities:
2133: # - unix - The user can be authenticated against the unix
2134: # password file.
2135: # - internal - The user can be authenticated against a purely
2136: # internal per user password file.
2137: # - kerberos - The user can be authenticated against either a kerb4 or kerb5
2138: # ticket granting authority.
2139: # - user - The person tailoring LonCAPA can supply a user authentication
2140: # mechanism that is per system.
2141: #
2142: # Parameters:
2143: # $cmd - The command that got us here.
2144: # $tail - Tail of the command (remaining parameters).
2145: # $client - File descriptor connected to client.
2146: # Returns
2147: # 0 - Requested to exit, caller should shut down.
2148: # 1 - Continue processing.
2149: # Implicit inputs:
2150: # The authentication systems describe above have their own forms of implicit
2151: # input into the authentication process that are described above.
2152: #
2153: sub authenticate_handler {
2154: my ($cmd, $tail, $client) = @_;
2155:
2156:
2157: # Regenerate the full input line
2158:
2159: my $userinput = $cmd.":".$tail;
2160:
2161: # udom - User's domain.
2162: # uname - Username.
2163: # upass - User's password.
1.396 raeburn 2164: # checkdefauth - Pass to validate_user() to try authentication
2165: # with default auth type(s) if no user account.
1.447 raeburn 2166: # clientcancheckhost - Passed by clients with functionality in lonauth.pm
2167: # to check if session can be hosted.
1.220 foxr 2168:
1.447 raeburn 2169: my ($udom, $uname, $upass, $checkdefauth, $clientcancheckhost)=split(/:/,$tail);
1.399 raeburn 2170: &Debug(" Authenticate domain = $udom, user = $uname, password = $upass, checkdefauth = $checkdefauth");
1.220 foxr 2171: chomp($upass);
2172: $upass=&unescape($upass);
2173:
1.396 raeburn 2174: my $pwdcorrect = &validate_user($udom,$uname,$upass,$checkdefauth);
1.220 foxr 2175: if($pwdcorrect) {
1.447 raeburn 2176: my $canhost = 1;
2177: unless ($clientcancheckhost) {
1.448 raeburn 2178: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
2179: my $uint_dom = &Apache::lonnet::internet_dom($uprimary_id);
1.452 raeburn 2180: my @intdoms;
2181: my $internet_names = &Apache::lonnet::get_internet_names($clientname);
2182: if (ref($internet_names) eq 'ARRAY') {
2183: @intdoms = @{$internet_names};
2184: }
1.448 raeburn 2185: unless ($uint_dom ne '' && grep(/^\Q$uint_dom\E$/,@intdoms)) {
1.447 raeburn 2186: my ($remote,$hosted);
2187: my $remotesession = &get_usersession_config($udom,'remotesession');
2188: if (ref($remotesession) eq 'HASH') {
1.525 raeburn 2189: $remote = $remotesession->{'remote'};
1.447 raeburn 2190: }
1.448 raeburn 2191: my $hostedsession = &get_usersession_config($clienthomedom,'hostedsession');
1.447 raeburn 2192: if (ref($hostedsession) eq 'HASH') {
2193: $hosted = $hostedsession->{'hosted'};
2194: }
1.448 raeburn 2195: $canhost = &Apache::lonnet::can_host_session($udom,$clientname,
1.492 droeschl 2196: $clientversion,
1.447 raeburn 2197: $remote,$hosted);
2198: }
2199: }
2200: if ($canhost) {
2201: &Reply( $client, "authorized\n", $userinput);
2202: } else {
2203: &Reply( $client, "not_allowed_to_host\n", $userinput);
2204: }
1.220 foxr 2205: #
2206: # Bad credentials: Failed to authorize
2207: #
2208: } else {
2209: &Failure( $client, "non_authorized\n", $userinput);
2210: }
2211:
2212: return 1;
2213: }
1.263 albertel 2214: ®ister_handler("auth", \&authenticate_handler, 1, 1, 0);
1.214 foxr 2215:
1.222 foxr 2216: #
2217: # Change a user's password. Note that this function is complicated by
2218: # the fact that a user may be authenticated in more than one way:
2219: # At present, we are not able to change the password for all types of
2220: # authentication methods. Only for:
2221: # unix - unix password or shadow passoword style authentication.
2222: # local - Locally written authentication mechanism.
2223: # For now, kerb4 and kerb5 password changes are not supported and result
2224: # in an error.
2225: # FUTURE WORK:
2226: # Support kerberos passwd changes?
2227: # Parameters:
2228: # $cmd - The command that got us here.
2229: # $tail - Tail of the command (remaining parameters).
2230: # $client - File descriptor connected to client.
2231: # Returns
2232: # 0 - Requested to exit, caller should shut down.
2233: # 1 - Continue processing.
2234: # Implicit inputs:
2235: # The authentication systems describe above have their own forms of implicit
2236: # input into the authentication process that are described above.
2237: sub change_password_handler {
2238: my ($cmd, $tail, $client) = @_;
2239:
2240: my $userinput = $cmd.":".$tail; # Reconstruct client's string.
2241:
2242: #
2243: # udom - user's domain.
2244: # uname - Username.
2245: # upass - Current password.
2246: # npass - New password.
1.346 raeburn 2247: # context - Context in which this was called
2248: # (preferences or reset_by_email).
1.428 raeburn 2249: # lonhost - HostID of server where request originated
1.222 foxr 2250:
1.428 raeburn 2251: my ($udom,$uname,$upass,$npass,$context,$lonhost)=split(/:/,$tail);
1.222 foxr 2252:
2253: $upass=&unescape($upass);
2254: $npass=&unescape($npass);
2255: &Debug("Trying to change password for $uname");
2256:
2257: # First require that the user can be authenticated with their
1.346 raeburn 2258: # old password unless context was 'reset_by_email':
2259:
1.428 raeburn 2260: my ($validated,$failure);
1.346 raeburn 2261: if ($context eq 'reset_by_email') {
1.428 raeburn 2262: if ($lonhost eq '') {
2263: $failure = 'invalid_client';
2264: } else {
2265: $validated = 1;
2266: }
1.346 raeburn 2267: } else {
2268: $validated = &validate_user($udom, $uname, $upass);
2269: }
1.222 foxr 2270: if($validated) {
2271: my $realpasswd = &get_auth_type($udom, $uname); # Defined since authd.
2272:
2273: my ($howpwd,$contentpwd)=split(/:/,$realpasswd);
2274: if ($howpwd eq 'internal') {
2275: &Debug("internal auth");
1.518 raeburn 2276: my $ncpass = &hash_passwd($udom,$npass);
1.222 foxr 2277: if(&rewrite_password_file($udom, $uname, "internal:$ncpass")) {
1.428 raeburn 2278: my $msg="Result of password change for $uname: pwchange_success";
2279: if ($lonhost) {
2280: $msg .= " - request originated from: $lonhost";
2281: }
2282: &logthis($msg);
1.518 raeburn 2283: &update_passwd_history($uname,$udom,$howpwd,$context);
1.222 foxr 2284: &Reply($client, "ok\n", $userinput);
2285: } else {
2286: &logthis("Unable to open $uname passwd "
2287: ."to change password");
2288: &Failure( $client, "non_authorized\n",$userinput);
2289: }
1.346 raeburn 2290: } elsif ($howpwd eq 'unix' && $context ne 'reset_by_email') {
1.287 foxr 2291: my $result = &change_unix_password($uname, $npass);
1.518 raeburn 2292: if ($result eq 'ok') {
2293: &update_passwd_history($uname,$udom,$howpwd,$context);
2294: }
1.222 foxr 2295: &logthis("Result of password change for $uname: ".
1.287 foxr 2296: $result);
1.387 albertel 2297: &Reply($client, \$result, $userinput);
1.222 foxr 2298: } else {
2299: # this just means that the current password mode is not
2300: # one we know how to change (e.g the kerberos auth modes or
2301: # locally written auth handler).
2302: #
2303: &Failure( $client, "auth_mode_error\n", $userinput);
2304: }
2305:
1.224 foxr 2306: } else {
1.428 raeburn 2307: if ($failure eq '') {
2308: $failure = 'non_authorized';
2309: }
2310: &Failure( $client, "$failure\n", $userinput);
1.222 foxr 2311: }
2312:
2313: return 1;
2314: }
1.263 albertel 2315: ®ister_handler("passwd", \&change_password_handler, 1, 1, 0);
1.222 foxr 2316:
1.518 raeburn 2317: sub hash_passwd {
2318: my ($domain,$plainpass,@rest) = @_;
2319: my ($salt,$cost);
2320: if (@rest) {
2321: $cost = $rest[0];
2322: # salt is first 22 characters, base-64 encoded by bcrypt
2323: my $plainsalt = substr($rest[1],0,22);
2324: $salt = Crypt::Eksblowfish::Bcrypt::de_base64($plainsalt);
2325: } else {
2326: my $defaultcost;
2327: my %domconfig =
2328: &Apache::lonnet::get_dom('configuration',['password'],$domain);
2329: if (ref($domconfig{'password'}) eq 'HASH') {
2330: $defaultcost = $domconfig{'password'}{'cost'};
2331: }
2332: if (($defaultcost eq '') || ($defaultcost =~ /D/)) {
2333: $cost = 10;
2334: } else {
2335: $cost = $defaultcost;
2336: }
2337: # Generate random 16-octet base64 salt
2338: $salt = "";
2339: $salt .= pack("C", int rand(256)) for 1..16;
2340: }
2341: my $hash = &Crypt::Eksblowfish::Bcrypt::bcrypt_hash({
2342: key_nul => 1,
2343: cost => $cost,
2344: salt => $salt,
2345: }, Digest::SHA::sha512(Encode::encode('UTF-8',$plainpass)));
2346:
2347: my $result = join("!", "", "bcrypt", sprintf("%02d",$cost),
2348: &Crypt::Eksblowfish::Bcrypt::en_base64($salt).
2349: &Crypt::Eksblowfish::Bcrypt::en_base64($hash));
2350: return $result;
2351: }
2352:
1.225 foxr 2353: #
2354: # Create a new user. User in this case means a lon-capa user.
2355: # The user must either already exist in some authentication realm
2356: # like kerberos or the /etc/passwd. If not, a user completely local to
2357: # this loncapa system is created.
2358: #
2359: # Parameters:
2360: # $cmd - The command that got us here.
2361: # $tail - Tail of the command (remaining parameters).
2362: # $client - File descriptor connected to client.
2363: # Returns
2364: # 0 - Requested to exit, caller should shut down.
2365: # 1 - Continue processing.
2366: # Implicit inputs:
2367: # The authentication systems describe above have their own forms of implicit
2368: # input into the authentication process that are described above.
2369: sub add_user_handler {
2370:
2371: my ($cmd, $tail, $client) = @_;
2372:
2373:
2374: my ($udom,$uname,$umode,$npass)=split(/:/,$tail);
2375: my $userinput = $cmd.":".$tail; # Reconstruct the full request line.
2376:
2377: &Debug("cmd =".$cmd." $udom =".$udom." uname=".$uname);
2378:
2379:
2380: if($udom eq $currentdomainid) { # Reject new users for other domains...
2381:
2382: my $oldumask=umask(0077);
2383: chomp($npass);
2384: $npass=&unescape($npass);
2385: my $passfilename = &password_path($udom, $uname);
2386: &Debug("Password file created will be:".$passfilename);
2387: if (-e $passfilename) {
2388: &Failure( $client, "already_exists\n", $userinput);
2389: } else {
2390: my $fperror='';
1.264 albertel 2391: if (!&mkpath($passfilename)) {
2392: $fperror="error: ".($!+0)." mkdir failed while attempting "
2393: ."makeuser";
1.225 foxr 2394: }
2395: unless ($fperror) {
1.518 raeburn 2396: my $result=&make_passwd_file($uname,$udom,$umode,$npass,
2397: $passfilename,'makeuser');
1.390 raeburn 2398: &Reply($client,\$result, $userinput); #BUGBUG - could be fail
1.225 foxr 2399: } else {
1.387 albertel 2400: &Failure($client, \$fperror, $userinput);
1.225 foxr 2401: }
2402: }
2403: umask($oldumask);
2404: } else {
2405: &Failure($client, "not_right_domain\n",
2406: $userinput); # Even if we are multihomed.
2407:
2408: }
2409: return 1;
2410:
2411: }
2412: ®ister_handler("makeuser", \&add_user_handler, 1, 1, 0);
2413:
2414: #
2415: # Change the authentication method of a user. Note that this may
2416: # also implicitly change the user's password if, for example, the user is
2417: # joining an existing authentication realm. Known authentication realms at
2418: # this time are:
2419: # internal - Purely internal password file (only loncapa knows this user)
2420: # local - Institutionally written authentication module.
2421: # unix - Unix user (/etc/passwd with or without /etc/shadow).
2422: # kerb4 - kerberos version 4
2423: # kerb5 - kerberos version 5
2424: #
2425: # Parameters:
2426: # $cmd - The command that got us here.
2427: # $tail - Tail of the command (remaining parameters).
2428: # $client - File descriptor connected to client.
2429: # Returns
2430: # 0 - Requested to exit, caller should shut down.
2431: # 1 - Continue processing.
2432: # Implicit inputs:
2433: # The authentication systems describe above have their own forms of implicit
2434: # input into the authentication process that are described above.
1.287 foxr 2435: # NOTE:
2436: # This is also used to change the authentication credential values (e.g. passwd).
2437: #
1.225 foxr 2438: #
2439: sub change_authentication_handler {
2440:
2441: my ($cmd, $tail, $client) = @_;
2442:
2443: my $userinput = "$cmd:$tail"; # Reconstruct user input.
2444:
2445: my ($udom,$uname,$umode,$npass)=split(/:/,$tail);
2446: &Debug("cmd = ".$cmd." domain= ".$udom."uname =".$uname." umode= ".$umode);
2447: if ($udom ne $currentdomainid) {
2448: &Failure( $client, "not_right_domain\n", $client);
2449: } else {
2450:
2451: chomp($npass);
2452:
2453: $npass=&unescape($npass);
1.261 foxr 2454: my $oldauth = &get_auth_type($udom, $uname); # Get old auth info.
1.225 foxr 2455: my $passfilename = &password_path($udom, $uname);
2456: if ($passfilename) { # Not allowed to create a new user!!
1.287 foxr 2457: # If just changing the unix passwd. need to arrange to run
1.502 raeburn 2458: # passwd since otherwise make_passwd_file will fail as
2459: # creation of unix authenticated users is no longer supported
2460: # except from the command line, when running make_domain_coordinator.pl
1.287 foxr 2461:
2462: if(($oldauth =~/^unix/) && ($umode eq "unix")) {
2463: my $result = &change_unix_password($uname, $npass);
2464: &logthis("Result of password change for $uname: ".$result);
2465: if ($result eq "ok") {
1.518 raeburn 2466: &update_passwd_history($uname,$udom,$umode,'changeuserauth');
1.390 raeburn 2467: &Reply($client, \$result);
1.288 albertel 2468: } else {
1.387 albertel 2469: &Failure($client, \$result);
1.287 foxr 2470: }
1.288 albertel 2471: } else {
1.518 raeburn 2472: my $result=&make_passwd_file($uname,$udom,$umode,$npass,
2473: $passfilename,'changeuserauth');
1.287 foxr 2474: #
2475: # If the current auth mode is internal, and the old auth mode was
2476: # unix, or krb*, and the user is an author for this domain,
2477: # re-run manage_permissions for that role in order to be able
2478: # to take ownership of the construction space back to www:www
2479: #
1.502 raeburn 2480:
2481:
1.387 albertel 2482: &Reply($client, \$result, $userinput);
1.261 foxr 2483: }
2484:
2485:
1.225 foxr 2486: } else {
1.251 foxr 2487: &Failure($client, "non_authorized\n", $userinput); # Fail the user now.
1.225 foxr 2488: }
2489: }
2490: return 1;
2491: }
2492: ®ister_handler("changeuserauth", \&change_authentication_handler, 1,1, 0);
2493:
1.518 raeburn 2494: sub update_passwd_history {
2495: my ($uname,$udom,$umode,$context) = @_;
2496: my $proname=&propath($udom,$uname);
2497: my $now = time;
2498: if (open(my $fh,">>$proname/passwd.log")) {
2499: print $fh "$now:$umode:$context\n";
2500: close($fh);
2501: }
2502: return;
2503: }
2504:
1.225 foxr 2505: #
2506: # Determines if this is the home server for a user. The home server
2507: # for a user will have his/her lon-capa passwd file. Therefore all we need
2508: # to do is determine if this file exists.
2509: #
2510: # Parameters:
2511: # $cmd - The command that got us here.
2512: # $tail - Tail of the command (remaining parameters).
2513: # $client - File descriptor connected to client.
2514: # Returns
2515: # 0 - Requested to exit, caller should shut down.
2516: # 1 - Continue processing.
2517: # Implicit inputs:
2518: # The authentication systems describe above have their own forms of implicit
2519: # input into the authentication process that are described above.
2520: #
2521: sub is_home_handler {
2522: my ($cmd, $tail, $client) = @_;
2523:
2524: my $userinput = "$cmd:$tail";
2525:
2526: my ($udom,$uname)=split(/:/,$tail);
2527: chomp($uname);
2528: my $passfile = &password_filename($udom, $uname);
2529: if($passfile) {
2530: &Reply( $client, "found\n", $userinput);
2531: } else {
2532: &Failure($client, "not_found\n", $userinput);
2533: }
2534: return 1;
2535: }
2536: ®ister_handler("home", \&is_home_handler, 0,1,0);
2537:
2538: #
1.434 www 2539: # Process an update request for a resource.
2540: # A resource has been modified that we hold a subscription to.
1.225 foxr 2541: # If the resource is not local, then we must update, or at least invalidate our
2542: # cached copy of the resource.
2543: # Parameters:
2544: # $cmd - The command that got us here.
2545: # $tail - Tail of the command (remaining parameters).
2546: # $client - File descriptor connected to client.
2547: # Returns
2548: # 0 - Requested to exit, caller should shut down.
2549: # 1 - Continue processing.
2550: # Implicit inputs:
2551: # The authentication systems describe above have their own forms of implicit
2552: # input into the authentication process that are described above.
2553: #
2554: sub update_resource_handler {
2555:
2556: my ($cmd, $tail, $client) = @_;
2557:
2558: my $userinput = "$cmd:$tail";
2559:
2560: my $fname= $tail; # This allows interactive testing
2561:
2562:
2563: my $ownership=ishome($fname);
2564: if ($ownership eq 'not_owner') {
2565: if (-e $fname) {
1.434 www 2566: # Delete preview file, if exists
2567: unlink("$fname.tmp");
2568: # Get usage stats
1.225 foxr 2569: my ($dev,$ino,$mode,$nlink,$uid,$gid,$rdev,$size,
2570: $atime,$mtime,$ctime,$blksize,$blocks)=stat($fname);
2571: my $now=time;
2572: my $since=$now-$atime;
1.434 www 2573: # If the file has not been used within lonExpire seconds,
2574: # unsubscribe from it and delete local copy
1.225 foxr 2575: if ($since>$perlvar{'lonExpire'}) {
1.365 albertel 2576: my $reply=&Apache::lonnet::reply("unsub:$fname","$clientname");
1.308 albertel 2577: &devalidate_meta_cache($fname);
1.225 foxr 2578: unlink("$fname");
1.334 albertel 2579: unlink("$fname.meta");
1.225 foxr 2580: } else {
1.434 www 2581: # Yes, this is in active use. Get a fresh copy. Since it might be in
2582: # very active use and huge (like a movie), copy it to "in.transfer" filename first.
1.225 foxr 2583: my $transname="$fname.in.transfer";
1.365 albertel 2584: my $remoteurl=&Apache::lonnet::reply("sub:$fname","$clientname");
1.225 foxr 2585: my $response;
1.455 www 2586: # FIXME: cannot replicate files that take more than two minutes to transfer?
2587: # alarm(120);
2588: # FIXME: this should use the LWP mechanism, not internal alarms.
2589: alarm(1200);
1.225 foxr 2590: {
2591: my $request=new HTTP::Request('GET',"$remoteurl");
1.523 raeburn 2592: $response=&LONCAPA::LWPReq::makerequest($clientname,$request,$transname,\%perlvar,1200,0,1);
1.225 foxr 2593: }
2594: alarm(0);
2595: if ($response->is_error()) {
1.455 www 2596: # FIXME: we should probably clean up here instead of just whine
1.225 foxr 2597: unlink($transname);
2598: my $message=$response->status_line;
2599: &logthis("LWP GET: $message for $fname ($remoteurl)");
2600: } else {
2601: if ($remoteurl!~/\.meta$/) {
1.455 www 2602: # FIXME: isn't there an internal LWP mechanism for this?
1.225 foxr 2603: alarm(120);
2604: {
2605: my $mrequest=new HTTP::Request('GET',$remoteurl.'.meta');
1.523 raeburn 2606: my $mresponse = &LONCAPA::LWPReq::makerequest($clientname,$mrequest,$fname.'.meta',\%perlvar,120,0,1);
1.225 foxr 2607: if ($mresponse->is_error()) {
2608: unlink($fname.'.meta');
2609: }
2610: }
2611: alarm(0);
2612: }
1.434 www 2613: # we successfully transfered, copy file over to real name
1.225 foxr 2614: rename($transname,$fname);
1.308 albertel 2615: &devalidate_meta_cache($fname);
1.225 foxr 2616: }
2617: }
2618: &Reply( $client, "ok\n", $userinput);
2619: } else {
2620: &Failure($client, "not_found\n", $userinput);
2621: }
2622: } else {
2623: &Failure($client, "rejected\n", $userinput);
2624: }
2625: return 1;
2626: }
2627: ®ister_handler("update", \&update_resource_handler, 0 ,1, 0);
2628:
1.308 albertel 2629: sub devalidate_meta_cache {
2630: my ($url) = @_;
2631: use Cache::Memcached;
2632: my $memcache = new Cache::Memcached({'servers'=>['127.0.0.1:11211']});
1.365 albertel 2633: $url = &Apache::lonnet::declutter($url);
1.308 albertel 2634: $url =~ s-\.meta$--;
2635: my $id = &escape('meta:'.$url);
2636: $memcache->delete($id);
2637: }
2638:
1.225 foxr 2639: #
1.226 foxr 2640: # Fetch a user file from a remote server to the user's home directory
2641: # userfiles subdir.
1.225 foxr 2642: # Parameters:
2643: # $cmd - The command that got us here.
2644: # $tail - Tail of the command (remaining parameters).
2645: # $client - File descriptor connected to client.
2646: # Returns
2647: # 0 - Requested to exit, caller should shut down.
2648: # 1 - Continue processing.
2649: #
2650: sub fetch_user_file_handler {
2651:
2652: my ($cmd, $tail, $client) = @_;
2653:
2654: my $userinput = "$cmd:$tail";
2655: my $fname = $tail;
1.232 foxr 2656: my ($udom,$uname,$ufile) = ($fname =~ m|^([^/]+)/([^/]+)/(.+)$|);
1.225 foxr 2657: my $udir=&propath($udom,$uname).'/userfiles';
2658: unless (-e $udir) {
2659: mkdir($udir,0770);
2660: }
1.232 foxr 2661: Debug("fetch user file for $fname");
1.225 foxr 2662: if (-e $udir) {
2663: $ufile=~s/^[\.\~]+//;
1.232 foxr 2664:
2665: # IF necessary, create the path right down to the file.
2666: # Note that any regular files in the way of this path are
2667: # wiped out to deal with some earlier folly of mine.
2668:
1.267 raeburn 2669: if (!&mkpath($udir.'/'.$ufile)) {
1.264 albertel 2670: &Failure($client, "unable_to_create\n", $userinput);
1.232 foxr 2671: }
2672:
1.225 foxr 2673: my $destname=$udir.'/'.$ufile;
2674: my $transname=$udir.'/'.$ufile.'.in.transit';
1.476 raeburn 2675: my $clientprotocol=$Apache::lonnet::protocol{$clientname};
2676: $clientprotocol = 'http' if ($clientprotocol ne 'https');
1.486 raeburn 2677: my $clienthost = &Apache::lonnet::hostname($clientname);
2678: my $remoteurl=$clientprotocol.'://'.$clienthost.'/userfiles/'.$fname;
1.225 foxr 2679: my $response;
1.232 foxr 2680: Debug("Remote URL : $remoteurl Transfername $transname Destname: $destname");
1.523 raeburn 2681: alarm(1200);
1.225 foxr 2682: {
2683: my $request=new HTTP::Request('GET',"$remoteurl");
1.523 raeburn 2684: my $verifycert = 1;
2685: my @machine_ids = &Apache::lonnet::current_machine_ids();
2686: if (grep(/^\Q$clientname\E$/,@machine_ids)) {
2687: $verifycert = 0;
2688: }
2689: $response = &LONCAPA::LWPReq::makerequest($clientname,$request,$transname,\%perlvar,1200,$verifycert);
1.225 foxr 2690: }
2691: alarm(0);
2692: if ($response->is_error()) {
2693: unlink($transname);
2694: my $message=$response->status_line;
2695: &logthis("LWP GET: $message for $fname ($remoteurl)");
2696: &Failure($client, "failed\n", $userinput);
2697: } else {
1.232 foxr 2698: Debug("Renaming $transname to $destname");
1.225 foxr 2699: if (!rename($transname,$destname)) {
2700: &logthis("Unable to move $transname to $destname");
2701: unlink($transname);
2702: &Failure($client, "failed\n", $userinput);
2703: } else {
1.495 raeburn 2704: if ($fname =~ /^default.+\.(page|sequence)$/) {
2705: my ($major,$minor) = split(/\./,$clientversion);
2706: if (($major < 2) || ($major == 2 && $minor < 11)) {
2707: my $now = time;
2708: &Apache::lonnet::do_cache_new('crschange',$udom.'_'.$uname,$now,600);
2709: my $key = &escape('internal.contentchange');
2710: my $what = "$key=$now";
2711: my $hashref = &tie_user_hash($udom,$uname,'environment',
2712: &GDBM_WRCREAT(),"P",$what);
2713: if ($hashref) {
2714: $hashref->{$key}=$now;
2715: if (!&untie_user_hash($hashref)) {
2716: &logthis("error: ".($!+0)." untie (GDBM) failed ".
2717: "when updating internal.contentchange");
2718: }
2719: }
2720: }
2721: }
1.225 foxr 2722: &Reply($client, "ok\n", $userinput);
2723: }
2724: }
2725: } else {
2726: &Failure($client, "not_home\n", $userinput);
2727: }
2728: return 1;
2729: }
2730: ®ister_handler("fetchuserfile", \&fetch_user_file_handler, 0, 1, 0);
2731:
1.226 foxr 2732: #
2733: # Remove a file from a user's home directory userfiles subdirectory.
2734: # Parameters:
2735: # cmd - the Lond request keyword that got us here.
2736: # tail - the part of the command past the keyword.
2737: # client- File descriptor connected with the client.
2738: #
2739: # Returns:
2740: # 1 - Continue processing.
2741: sub remove_user_file_handler {
2742: my ($cmd, $tail, $client) = @_;
2743:
2744: my ($fname) = split(/:/, $tail); # Get rid of any tailing :'s lonc may have sent.
2745:
2746: my ($udom,$uname,$ufile) = ($fname =~ m|^([^/]+)/([^/]+)/(.+)$|);
2747: if ($ufile =~m|/\.\./|) {
2748: # any files paths with /../ in them refuse
2749: # to deal with
2750: &Failure($client, "refused\n", "$cmd:$tail");
2751: } else {
2752: my $udir = &propath($udom,$uname);
2753: if (-e $udir) {
2754: my $file=$udir.'/userfiles/'.$ufile;
2755: if (-e $file) {
1.253 foxr 2756: #
2757: # If the file is a regular file unlink is fine...
1.520 raeburn 2758: # However it's possible the client wants a dir
2759: # removed, in which case rmdir is more appropriate.
2760: # Note: rmdir will only remove an empty directory.
1.253 foxr 2761: #
1.240 banghart 2762: if (-f $file){
1.241 albertel 2763: unlink($file);
1.520 raeburn 2764: # for html files remove the associated .bak file
2765: # which may have been created by the editor.
2766: if ($ufile =~ m{^((docs|supplemental)/(?:\d+|default)/\d+(?:|/.+)/)[^/]+\.x?html?$}i) {
2767: my $path = $1;
2768: if (-e $file.'.bak') {
2769: unlink($file.'.bak');
2770: }
2771: }
1.241 albertel 2772: } elsif(-d $file) {
2773: rmdir($file);
1.240 banghart 2774: }
1.226 foxr 2775: if (-e $file) {
1.253 foxr 2776: # File is still there after we deleted it ?!?
2777:
1.226 foxr 2778: &Failure($client, "failed\n", "$cmd:$tail");
2779: } else {
2780: &Reply($client, "ok\n", "$cmd:$tail");
2781: }
2782: } else {
2783: &Failure($client, "not_found\n", "$cmd:$tail");
2784: }
2785: } else {
2786: &Failure($client, "not_home\n", "$cmd:$tail");
2787: }
2788: }
2789: return 1;
2790: }
2791: ®ister_handler("removeuserfile", \&remove_user_file_handler, 0,1,0);
2792:
1.236 albertel 2793: #
2794: # make a directory in a user's home directory userfiles subdirectory.
2795: # Parameters:
2796: # cmd - the Lond request keyword that got us here.
2797: # tail - the part of the command past the keyword.
2798: # client- File descriptor connected with the client.
2799: #
2800: # Returns:
2801: # 1 - Continue processing.
2802: sub mkdir_user_file_handler {
2803: my ($cmd, $tail, $client) = @_;
2804:
2805: my ($dir) = split(/:/, $tail); # Get rid of any tailing :'s lonc may have sent.
2806: $dir=&unescape($dir);
2807: my ($udom,$uname,$ufile) = ($dir =~ m|^([^/]+)/([^/]+)/(.+)$|);
2808: if ($ufile =~m|/\.\./|) {
2809: # any files paths with /../ in them refuse
2810: # to deal with
2811: &Failure($client, "refused\n", "$cmd:$tail");
2812: } else {
2813: my $udir = &propath($udom,$uname);
2814: if (-e $udir) {
1.264 albertel 2815: my $newdir=$udir.'/userfiles/'.$ufile.'/';
2816: if (!&mkpath($newdir)) {
2817: &Failure($client, "failed\n", "$cmd:$tail");
1.236 albertel 2818: }
1.264 albertel 2819: &Reply($client, "ok\n", "$cmd:$tail");
1.236 albertel 2820: } else {
2821: &Failure($client, "not_home\n", "$cmd:$tail");
2822: }
2823: }
2824: return 1;
2825: }
2826: ®ister_handler("mkdiruserfile", \&mkdir_user_file_handler, 0,1,0);
2827:
1.237 albertel 2828: #
2829: # rename a file in a user's home directory userfiles subdirectory.
2830: # Parameters:
2831: # cmd - the Lond request keyword that got us here.
2832: # tail - the part of the command past the keyword.
2833: # client- File descriptor connected with the client.
2834: #
2835: # Returns:
2836: # 1 - Continue processing.
2837: sub rename_user_file_handler {
2838: my ($cmd, $tail, $client) = @_;
2839:
2840: my ($udom,$uname,$old,$new) = split(/:/, $tail);
2841: $old=&unescape($old);
2842: $new=&unescape($new);
2843: if ($new =~m|/\.\./| || $old =~m|/\.\./|) {
2844: # any files paths with /../ in them refuse to deal with
2845: &Failure($client, "refused\n", "$cmd:$tail");
2846: } else {
2847: my $udir = &propath($udom,$uname);
2848: if (-e $udir) {
2849: my $oldfile=$udir.'/userfiles/'.$old;
2850: my $newfile=$udir.'/userfiles/'.$new;
2851: if (-e $newfile) {
2852: &Failure($client, "exists\n", "$cmd:$tail");
2853: } elsif (! -e $oldfile) {
2854: &Failure($client, "not_found\n", "$cmd:$tail");
2855: } else {
2856: if (!rename($oldfile,$newfile)) {
2857: &Failure($client, "failed\n", "$cmd:$tail");
2858: } else {
2859: &Reply($client, "ok\n", "$cmd:$tail");
2860: }
2861: }
2862: } else {
2863: &Failure($client, "not_home\n", "$cmd:$tail");
2864: }
2865: }
2866: return 1;
2867: }
2868: ®ister_handler("renameuserfile", \&rename_user_file_handler, 0,1,0);
2869:
1.227 foxr 2870: #
1.382 albertel 2871: # Checks if the specified user has an active session on the server
2872: # return ok if so, not_found if not
2873: #
2874: # Parameters:
2875: # cmd - The request keyword that dispatched to tus.
2876: # tail - The tail of the request (colon separated parameters).
2877: # client - Filehandle open on the client.
2878: # Return:
2879: # 1.
2880: sub user_has_session_handler {
2881: my ($cmd, $tail, $client) = @_;
2882:
2883: my ($udom, $uname) = map { &unescape($_) } (split(/:/, $tail));
2884:
2885: opendir(DIR,$perlvar{'lonIDsDir'});
2886: my $filename;
2887: while ($filename=readdir(DIR)) {
2888: last if ($filename=~/^\Q$uname\E_\d+_\Q$udom\E_/);
2889: }
2890: if ($filename) {
2891: &Reply($client, "ok\n", "$cmd:$tail");
2892: } else {
2893: &Failure($client, "not_found\n", "$cmd:$tail");
2894: }
2895: return 1;
2896:
2897: }
2898: ®ister_handler("userhassession", \&user_has_session_handler, 0,1,0);
2899:
2900: #
1.263 albertel 2901: # Authenticate access to a user file by checking that the token the user's
2902: # passed also exists in their session file
1.227 foxr 2903: #
2904: # Parameters:
2905: # cmd - The request keyword that dispatched to tus.
2906: # tail - The tail of the request (colon separated parameters).
2907: # client - Filehandle open on the client.
2908: # Return:
2909: # 1.
2910: sub token_auth_user_file_handler {
2911: my ($cmd, $tail, $client) = @_;
2912:
2913: my ($fname, $session) = split(/:/, $tail);
2914:
2915: chomp($session);
1.393 raeburn 2916: my $reply="non_auth";
1.343 albertel 2917: my $file = $perlvar{'lonIDsDir'}.'/'.$session.'.id';
2918: if (open(ENVIN,"$file")) {
1.332 albertel 2919: flock(ENVIN,LOCK_SH);
1.343 albertel 2920: tie(my %disk_env,'GDBM_File',"$file",&GDBM_READER(),0640);
2921: if (exists($disk_env{"userfile.$fname"})) {
1.393 raeburn 2922: $reply="ok";
1.343 albertel 2923: } else {
2924: foreach my $envname (keys(%disk_env)) {
2925: if ($envname=~ m|^userfile\.\Q$fname\E|) {
1.393 raeburn 2926: $reply="ok";
1.343 albertel 2927: last;
2928: }
2929: }
1.227 foxr 2930: }
1.343 albertel 2931: untie(%disk_env);
1.227 foxr 2932: close(ENVIN);
1.387 albertel 2933: &Reply($client, \$reply, "$cmd:$tail");
1.227 foxr 2934: } else {
2935: &Failure($client, "invalid_token\n", "$cmd:$tail");
2936: }
2937: return 1;
2938:
2939: }
2940: ®ister_handler("tokenauthuserfile", \&token_auth_user_file_handler, 0,1,0);
1.229 foxr 2941:
2942: #
2943: # Unsubscribe from a resource.
2944: #
2945: # Parameters:
2946: # $cmd - The command that got us here.
2947: # $tail - Tail of the command (remaining parameters).
2948: # $client - File descriptor connected to client.
2949: # Returns
2950: # 0 - Requested to exit, caller should shut down.
2951: # 1 - Continue processing.
2952: #
2953: sub unsubscribe_handler {
2954: my ($cmd, $tail, $client) = @_;
2955:
2956: my $userinput= "$cmd:$tail";
2957:
2958: my ($fname) = split(/:/,$tail); # Split in case there's extrs.
2959:
2960: &Debug("Unsubscribing $fname");
2961: if (-e $fname) {
2962: &Debug("Exists");
2963: &Reply($client, &unsub($fname,$clientip), $userinput);
2964: } else {
2965: &Failure($client, "not_found\n", $userinput);
2966: }
2967: return 1;
2968: }
2969: ®ister_handler("unsub", \&unsubscribe_handler, 0, 1, 0);
1.263 albertel 2970:
1.230 foxr 2971: # Subscribe to a resource
2972: #
2973: # Parameters:
2974: # $cmd - The command that got us here.
2975: # $tail - Tail of the command (remaining parameters).
2976: # $client - File descriptor connected to client.
2977: # Returns
2978: # 0 - Requested to exit, caller should shut down.
2979: # 1 - Continue processing.
2980: #
2981: sub subscribe_handler {
2982: my ($cmd, $tail, $client)= @_;
2983:
2984: my $userinput = "$cmd:$tail";
2985:
2986: &Reply( $client, &subscribe($userinput,$clientip), $userinput);
2987:
2988: return 1;
2989: }
2990: ®ister_handler("sub", \&subscribe_handler, 0, 1, 0);
2991:
2992: #
1.379 albertel 2993: # Determine the latest version of a resource (it looks for the highest
2994: # past version and then returns that +1)
1.230 foxr 2995: #
2996: # Parameters:
2997: # $cmd - The command that got us here.
2998: # $tail - Tail of the command (remaining parameters).
1.379 albertel 2999: # (Should consist of an absolute path to a file)
1.230 foxr 3000: # $client - File descriptor connected to client.
3001: # Returns
3002: # 0 - Requested to exit, caller should shut down.
3003: # 1 - Continue processing.
3004: #
3005: sub current_version_handler {
3006: my ($cmd, $tail, $client) = @_;
3007:
3008: my $userinput= "$cmd:$tail";
3009:
3010: my $fname = $tail;
3011: &Reply( $client, ¤tversion($fname)."\n", $userinput);
3012: return 1;
3013:
3014: }
3015: ®ister_handler("currentversion", \¤t_version_handler, 0, 1, 0);
3016:
3017: # Make an entry in a user's activity log.
3018: #
3019: # Parameters:
3020: # $cmd - The command that got us here.
3021: # $tail - Tail of the command (remaining parameters).
3022: # $client - File descriptor connected to client.
3023: # Returns
3024: # 0 - Requested to exit, caller should shut down.
3025: # 1 - Continue processing.
3026: #
3027: sub activity_log_handler {
3028: my ($cmd, $tail, $client) = @_;
3029:
3030:
3031: my $userinput= "$cmd:$tail";
3032:
3033: my ($udom,$uname,$what)=split(/:/,$tail);
3034: chomp($what);
3035: my $proname=&propath($udom,$uname);
3036: my $now=time;
3037: my $hfh;
3038: if ($hfh=IO::File->new(">>$proname/activity.log")) {
3039: print $hfh "$now:$clientname:$what\n";
3040: &Reply( $client, "ok\n", $userinput);
3041: } else {
3042: &Failure($client, "error: ".($!+0)." IO::File->new Failed "
3043: ."while attempting log\n",
3044: $userinput);
3045: }
3046:
3047: return 1;
3048: }
1.263 albertel 3049: ®ister_handler("log", \&activity_log_handler, 0, 1, 0);
1.230 foxr 3050:
3051: #
3052: # Put a namespace entry in a user profile hash.
3053: # My druthers would be for this to be an encrypted interaction too.
3054: # anything that might be an inadvertent covert channel about either
3055: # user authentication or user personal information....
3056: #
3057: # Parameters:
3058: # $cmd - The command that got us here.
3059: # $tail - Tail of the command (remaining parameters).
3060: # $client - File descriptor connected to client.
3061: # Returns
3062: # 0 - Requested to exit, caller should shut down.
3063: # 1 - Continue processing.
3064: #
3065: sub put_user_profile_entry {
3066: my ($cmd, $tail, $client) = @_;
1.229 foxr 3067:
1.230 foxr 3068: my $userinput = "$cmd:$tail";
3069:
1.242 raeburn 3070: my ($udom,$uname,$namespace,$what) =split(/:/,$tail,4);
1.230 foxr 3071: if ($namespace ne 'roles') {
3072: chomp($what);
3073: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3074: &GDBM_WRCREAT(),"P",$what);
3075: if($hashref) {
3076: my @pairs=split(/\&/,$what);
3077: foreach my $pair (@pairs) {
3078: my ($key,$value)=split(/=/,$pair);
3079: $hashref->{$key}=$value;
3080: }
1.311 albertel 3081: if (&untie_user_hash($hashref)) {
1.230 foxr 3082: &Reply( $client, "ok\n", $userinput);
3083: } else {
3084: &Failure($client, "error: ".($!+0)." untie(GDBM) failed ".
3085: "while attempting put\n",
3086: $userinput);
3087: }
3088: } else {
1.316 albertel 3089: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
1.230 foxr 3090: "while attempting put\n", $userinput);
3091: }
3092: } else {
3093: &Failure( $client, "refused\n", $userinput);
3094: }
3095:
3096: return 1;
3097: }
3098: ®ister_handler("put", \&put_user_profile_entry, 0, 1, 0);
3099:
1.283 albertel 3100: # Put a piece of new data in hash, returns error if entry already exists
3101: # Parameters:
3102: # $cmd - The command that got us here.
3103: # $tail - Tail of the command (remaining parameters).
3104: # $client - File descriptor connected to client.
3105: # Returns
3106: # 0 - Requested to exit, caller should shut down.
3107: # 1 - Continue processing.
3108: #
3109: sub newput_user_profile_entry {
3110: my ($cmd, $tail, $client) = @_;
3111:
3112: my $userinput = "$cmd:$tail";
3113:
3114: my ($udom,$uname,$namespace,$what) =split(/:/,$tail,4);
3115: if ($namespace eq 'roles') {
3116: &Failure( $client, "refused\n", $userinput);
3117: return 1;
3118: }
3119:
3120: chomp($what);
3121:
3122: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3123: &GDBM_WRCREAT(),"N",$what);
3124: if(!$hashref) {
1.316 albertel 3125: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
1.283 albertel 3126: "while attempting put\n", $userinput);
3127: return 1;
3128: }
3129:
3130: my @pairs=split(/\&/,$what);
3131: foreach my $pair (@pairs) {
3132: my ($key,$value)=split(/=/,$pair);
3133: if (exists($hashref->{$key})) {
1.513 raeburn 3134: if (!&untie_user_hash($hashref)) {
3135: &logthis("error: ".($!+0)." untie (GDBM) failed ".
3136: "while attempting newput - early out as key exists");
3137: }
3138: &Failure($client, "key_exists: ".$key."\n",$userinput);
3139: return 1;
1.283 albertel 3140: }
3141: }
3142:
3143: foreach my $pair (@pairs) {
3144: my ($key,$value)=split(/=/,$pair);
3145: $hashref->{$key}=$value;
3146: }
3147:
1.311 albertel 3148: if (&untie_user_hash($hashref)) {
1.283 albertel 3149: &Reply( $client, "ok\n", $userinput);
3150: } else {
3151: &Failure($client, "error: ".($!+0)." untie(GDBM) failed ".
3152: "while attempting put\n",
3153: $userinput);
3154: }
3155: return 1;
3156: }
3157: ®ister_handler("newput", \&newput_user_profile_entry, 0, 1, 0);
3158:
1.230 foxr 3159: #
3160: # Increment a profile entry in the user history file.
3161: # The history contains keyword value pairs. In this case,
3162: # The value itself is a pair of numbers. The first, the current value
3163: # the second an increment that this function applies to the current
3164: # value.
3165: #
3166: # Parameters:
3167: # $cmd - The command that got us here.
3168: # $tail - Tail of the command (remaining parameters).
3169: # $client - File descriptor connected to client.
3170: # Returns
3171: # 0 - Requested to exit, caller should shut down.
3172: # 1 - Continue processing.
3173: #
3174: sub increment_user_value_handler {
3175: my ($cmd, $tail, $client) = @_;
3176:
3177: my $userinput = "$cmd:$tail";
3178:
3179: my ($udom,$uname,$namespace,$what) =split(/:/,$tail);
3180: if ($namespace ne 'roles') {
3181: chomp($what);
3182: my $hashref = &tie_user_hash($udom, $uname,
3183: $namespace, &GDBM_WRCREAT(),
3184: "P",$what);
3185: if ($hashref) {
3186: my @pairs=split(/\&/,$what);
3187: foreach my $pair (@pairs) {
3188: my ($key,$value)=split(/=/,$pair);
1.284 raeburn 3189: $value = &unescape($value);
1.230 foxr 3190: # We could check that we have a number...
3191: if (! defined($value) || $value eq '') {
3192: $value = 1;
3193: }
3194: $hashref->{$key}+=$value;
1.284 raeburn 3195: if ($namespace eq 'nohist_resourcetracker') {
3196: if ($hashref->{$key} < 0) {
3197: $hashref->{$key} = 0;
3198: }
3199: }
1.230 foxr 3200: }
1.311 albertel 3201: if (&untie_user_hash($hashref)) {
1.230 foxr 3202: &Reply( $client, "ok\n", $userinput);
3203: } else {
3204: &Failure($client, "error: ".($!+0)." untie(GDBM) failed ".
3205: "while attempting inc\n", $userinput);
3206: }
3207: } else {
3208: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
3209: "while attempting inc\n", $userinput);
3210: }
3211: } else {
3212: &Failure($client, "refused\n", $userinput);
3213: }
3214:
3215: return 1;
3216: }
3217: ®ister_handler("inc", \&increment_user_value_handler, 0, 1, 0);
3218:
3219: #
3220: # Put a new role for a user. Roles are LonCAPA's packaging of permissions.
3221: # Each 'role' a user has implies a set of permissions. Adding a new role
3222: # for a person grants the permissions packaged with that role
3223: # to that user when the role is selected.
3224: #
3225: # Parameters:
3226: # $cmd - The command string (rolesput).
3227: # $tail - The remainder of the request line. For rolesput this
3228: # consists of a colon separated list that contains:
3229: # The domain and user that is granting the role (logged).
3230: # The domain and user that is getting the role.
3231: # The roles being granted as a set of & separated pairs.
3232: # each pair a key value pair.
3233: # $client - File descriptor connected to the client.
3234: # Returns:
3235: # 0 - If the daemon should exit
3236: # 1 - To continue processing.
3237: #
3238: #
3239: sub roles_put_handler {
3240: my ($cmd, $tail, $client) = @_;
3241:
3242: my $userinput = "$cmd:$tail";
3243:
3244: my ( $exedom, $exeuser, $udom, $uname, $what) = split(/:/,$tail);
3245:
3246:
3247: my $namespace='roles';
3248: chomp($what);
3249: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3250: &GDBM_WRCREAT(), "P",
3251: "$exedom:$exeuser:$what");
3252: #
3253: # Log the attempt to set a role. The {}'s here ensure that the file
3254: # handle is open for the minimal amount of time. Since the flush
3255: # is done on close this improves the chances the log will be an un-
3256: # corrupted ordered thing.
3257: if ($hashref) {
1.261 foxr 3258: my $pass_entry = &get_auth_type($udom, $uname);
3259: my ($auth_type,$pwd) = split(/:/, $pass_entry);
3260: $auth_type = $auth_type.":";
1.230 foxr 3261: my @pairs=split(/\&/,$what);
3262: foreach my $pair (@pairs) {
3263: my ($key,$value)=split(/=/,$pair);
3264: &manage_permissions($key, $udom, $uname,
1.260 foxr 3265: $auth_type);
1.230 foxr 3266: $hashref->{$key}=$value;
3267: }
1.311 albertel 3268: if (&untie_user_hash($hashref)) {
1.230 foxr 3269: &Reply($client, "ok\n", $userinput);
3270: } else {
3271: &Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ".
3272: "while attempting rolesput\n", $userinput);
3273: }
3274: } else {
3275: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
3276: "while attempting rolesput\n", $userinput);
3277: }
3278: return 1;
3279: }
3280: ®ister_handler("rolesput", \&roles_put_handler, 1,1,0); # Encoded client only.
3281:
3282: #
1.231 foxr 3283: # Deletes (removes) a role for a user. This is equivalent to removing
3284: # a permissions package associated with the role from the user's profile.
3285: #
3286: # Parameters:
3287: # $cmd - The command (rolesdel)
3288: # $tail - The remainder of the request line. This consists
3289: # of:
3290: # The domain and user requesting the change (logged)
3291: # The domain and user being changed.
3292: # The roles being revoked. These are shipped to us
3293: # as a bunch of & separated role name keywords.
3294: # $client - The file handle open on the client.
3295: # Returns:
3296: # 1 - Continue processing
3297: # 0 - Exit.
3298: #
3299: sub roles_delete_handler {
3300: my ($cmd, $tail, $client) = @_;
3301:
3302: my $userinput = "$cmd:$tail";
3303:
3304: my ($exedom,$exeuser,$udom,$uname,$what)=split(/:/,$tail);
3305: &Debug("cmd = ".$cmd." exedom= ".$exedom."user = ".$exeuser." udom=".$udom.
3306: "what = ".$what);
3307: my $namespace='roles';
3308: chomp($what);
3309: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3310: &GDBM_WRCREAT(), "D",
3311: "$exedom:$exeuser:$what");
3312:
3313: if ($hashref) {
3314: my @rolekeys=split(/\&/,$what);
3315:
3316: foreach my $key (@rolekeys) {
3317: delete $hashref->{$key};
3318: }
1.315 albertel 3319: if (&untie_user_hash($hashref)) {
1.231 foxr 3320: &Reply($client, "ok\n", $userinput);
3321: } else {
3322: &Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ".
3323: "while attempting rolesdel\n", $userinput);
3324: }
3325: } else {
3326: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
3327: "while attempting rolesdel\n", $userinput);
3328: }
3329:
3330: return 1;
3331: }
3332: ®ister_handler("rolesdel", \&roles_delete_handler, 1,1, 0); # Encoded client only
3333:
3334: # Unencrypted get from a user's profile database. See
3335: # GetProfileEntryEncrypted for a version that does end-to-end encryption.
3336: # This function retrieves a keyed item from a specific named database in the
3337: # user's directory.
3338: #
3339: # Parameters:
3340: # $cmd - Command request keyword (get).
3341: # $tail - Tail of the command. This is a colon separated list
3342: # consisting of the domain and username that uniquely
3343: # identifies the profile,
3344: # The 'namespace' which selects the gdbm file to
3345: # do the lookup in,
3346: # & separated list of keys to lookup. Note that
3347: # the values are returned as an & separated list too.
3348: # $client - File descriptor open on the client.
3349: # Returns:
3350: # 1 - Continue processing.
3351: # 0 - Exit.
3352: #
3353: sub get_profile_entry {
3354: my ($cmd, $tail, $client) = @_;
3355:
3356: my $userinput= "$cmd:$tail";
3357:
3358: my ($udom,$uname,$namespace,$what) = split(/:/,$tail);
3359: chomp($what);
1.255 foxr 3360:
1.390 raeburn 3361:
1.255 foxr 3362: my $replystring = read_profile($udom, $uname, $namespace, $what);
3363: my ($first) = split(/:/,$replystring);
3364: if($first ne "error") {
1.387 albertel 3365: &Reply($client, \$replystring, $userinput);
1.231 foxr 3366: } else {
1.255 foxr 3367: &Failure($client, $replystring." while attempting get\n", $userinput);
1.231 foxr 3368: }
3369: return 1;
1.255 foxr 3370:
3371:
1.231 foxr 3372: }
3373: ®ister_handler("get", \&get_profile_entry, 0,1,0);
3374:
3375: #
3376: # Process the encrypted get request. Note that the request is sent
3377: # in clear, but the reply is encrypted. This is a small covert channel:
3378: # information about the sensitive keys is given to the snooper. Just not
3379: # information about the values of the sensitive key. Hmm if I wanted to
3380: # know these I'd snoop for the egets. Get the profile item names from them
3381: # and then issue a get for them since there's no enforcement of the
3382: # requirement of an encrypted get for particular profile items. If I
3383: # were re-doing this, I'd force the request to be encrypted as well as the
3384: # reply. I'd also just enforce encrypted transactions for all gets since
3385: # that would prevent any covert channel snooping.
3386: #
3387: # Parameters:
3388: # $cmd - Command keyword of request (eget).
3389: # $tail - Tail of the command. See GetProfileEntry
# for more information about this.
3390: # $client - File open on the client.
3391: # Returns:
3392: # 1 - Continue processing
3393: # 0 - server should exit.
3394: sub get_profile_entry_encrypted {
3395: my ($cmd, $tail, $client) = @_;
3396:
3397: my $userinput = "$cmd:$tail";
3398:
1.339 albertel 3399: my ($udom,$uname,$namespace,$what) = split(/:/,$tail);
1.231 foxr 3400: chomp($what);
1.255 foxr 3401: my $qresult = read_profile($udom, $uname, $namespace, $what);
3402: my ($first) = split(/:/, $qresult);
3403: if($first ne "error") {
3404:
3405: if ($cipher) {
3406: my $cmdlength=length($qresult);
3407: $qresult.=" ";
3408: my $encqresult='';
3409: for(my $encidx=0;$encidx<=$cmdlength;$encidx+=8) {
3410: $encqresult.= unpack("H16",
3411: $cipher->encrypt(substr($qresult,
3412: $encidx,
3413: 8)));
3414: }
3415: &Reply( $client, "enc:$cmdlength:$encqresult\n", $userinput);
3416: } else {
1.231 foxr 3417: &Failure( $client, "error:no_key\n", $userinput);
3418: }
3419: } else {
1.255 foxr 3420: &Failure($client, "$qresult while attempting eget\n", $userinput);
3421:
1.231 foxr 3422: }
3423:
3424: return 1;
3425: }
1.255 foxr 3426: ®ister_handler("eget", \&get_profile_entry_encrypted, 0, 1, 0);
1.263 albertel 3427:
1.231 foxr 3428: #
3429: # Deletes a key in a user profile database.
3430: #
3431: # Parameters:
3432: # $cmd - Command keyword (del).
3433: # $tail - Command tail. IN this case a colon
3434: # separated list containing:
3435: # The domain and user that identifies uniquely
3436: # the identity of the user.
3437: # The profile namespace (name of the profile
3438: # database file).
3439: # & separated list of keywords to delete.
3440: # $client - File open on client socket.
3441: # Returns:
3442: # 1 - Continue processing
3443: # 0 - Exit server.
3444: #
3445: #
3446: sub delete_profile_entry {
3447: my ($cmd, $tail, $client) = @_;
3448:
3449: my $userinput = "cmd:$tail";
3450:
3451: my ($udom,$uname,$namespace,$what) = split(/:/,$tail);
3452: chomp($what);
3453: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3454: &GDBM_WRCREAT(),
3455: "D",$what);
3456: if ($hashref) {
3457: my @keys=split(/\&/,$what);
3458: foreach my $key (@keys) {
3459: delete($hashref->{$key});
3460: }
1.315 albertel 3461: if (&untie_user_hash($hashref)) {
1.231 foxr 3462: &Reply($client, "ok\n", $userinput);
3463: } else {
3464: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
3465: "while attempting del\n", $userinput);
3466: }
3467: } else {
3468: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
3469: "while attempting del\n", $userinput);
3470: }
3471: return 1;
3472: }
3473: ®ister_handler("del", \&delete_profile_entry, 0, 1, 0);
1.263 albertel 3474:
1.231 foxr 3475: #
3476: # List the set of keys that are defined in a profile database file.
3477: # A successful reply from this will contain an & separated list of
3478: # the keys.
3479: # Parameters:
3480: # $cmd - Command request (keys).
3481: # $tail - Remainder of the request, a colon separated
3482: # list containing domain/user that identifies the
3483: # user being queried, and the database namespace
3484: # (database filename essentially).
3485: # $client - File open on the client.
3486: # Returns:
3487: # 1 - Continue processing.
3488: # 0 - Exit the server.
3489: #
3490: sub get_profile_keys {
3491: my ($cmd, $tail, $client) = @_;
3492:
3493: my $userinput = "$cmd:$tail";
3494:
3495: my ($udom,$uname,$namespace)=split(/:/,$tail);
3496: my $qresult='';
3497: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3498: &GDBM_READER());
3499: if ($hashref) {
3500: foreach my $key (keys %$hashref) {
3501: $qresult.="$key&";
3502: }
1.315 albertel 3503: if (&untie_user_hash($hashref)) {
1.231 foxr 3504: $qresult=~s/\&$//;
1.387 albertel 3505: &Reply($client, \$qresult, $userinput);
1.231 foxr 3506: } else {
3507: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
3508: "while attempting keys\n", $userinput);
3509: }
3510: } else {
3511: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
3512: "while attempting keys\n", $userinput);
3513: }
3514:
3515: return 1;
3516: }
3517: ®ister_handler("keys", \&get_profile_keys, 0, 1, 0);
3518:
3519: #
3520: # Dump the contents of a user profile database.
3521: # Note that this constitutes a very large covert channel too since
3522: # the dump will return sensitive information that is not encrypted.
3523: # The naive security assumption is that the session negotiation ensures
3524: # our client is trusted and I don't believe that's assured at present.
3525: # Sure want badly to go to ssl or tls. Of course if my peer isn't really
3526: # a LonCAPA node they could have negotiated an encryption key too so >sigh<.
3527: #
3528: # Parameters:
3529: # $cmd - The command request keyword (currentdump).
3530: # $tail - Remainder of the request, consisting of a colon
3531: # separated list that has the domain/username and
3532: # the namespace to dump (database file).
3533: # $client - file open on the remote client.
3534: # Returns:
3535: # 1 - Continue processing.
3536: # 0 - Exit the server.
3537: #
3538: sub dump_profile_database {
3539: my ($cmd, $tail, $client) = @_;
3540:
1.494 droeschl 3541: my $res = LONCAPA::Lond::dump_profile_database($tail);
3542:
3543: if ($res =~ /^error:/) {
3544: Failure($client, \$res, "$cmd:$tail");
3545: } else {
3546: Reply($client, \$res, "$cmd:$tail");
3547: }
3548:
3549: return 1;
3550:
3551: #TODO remove
1.231 foxr 3552: my $userinput = "$cmd:$tail";
3553:
3554: my ($udom,$uname,$namespace) = split(/:/,$tail);
3555: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3556: &GDBM_READER());
3557: if ($hashref) {
3558: # Structure of %data:
3559: # $data{$symb}->{$parameter}=$value;
3560: # $data{$symb}->{'v.'.$parameter}=$version;
3561: # since $parameter will be unescaped, we do not
3562: # have to worry about silly parameter names...
3563:
3564: my $qresult='';
3565: my %data = (); # A hash of anonymous hashes..
3566: while (my ($key,$value) = each(%$hashref)) {
3567: my ($v,$symb,$param) = split(/:/,$key);
3568: next if ($v eq 'version' || $symb eq 'keys');
3569: next if (exists($data{$symb}) &&
3570: exists($data{$symb}->{$param}) &&
3571: $data{$symb}->{'v.'.$param} > $v);
3572: $data{$symb}->{$param}=$value;
3573: $data{$symb}->{'v.'.$param}=$v;
3574: }
1.311 albertel 3575: if (&untie_user_hash($hashref)) {
1.231 foxr 3576: while (my ($symb,$param_hash) = each(%data)) {
3577: while(my ($param,$value) = each (%$param_hash)){
3578: next if ($param =~ /^v\./); # Ignore versions...
3579: #
3580: # Just dump the symb=value pairs separated by &
3581: #
3582: $qresult.=$symb.':'.$param.'='.$value.'&';
3583: }
3584: }
3585: chop($qresult);
1.387 albertel 3586: &Reply($client , \$qresult, $userinput);
1.231 foxr 3587: } else {
3588: &Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ".
3589: "while attempting currentdump\n", $userinput);
3590: }
3591: } else {
3592: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
3593: "while attempting currentdump\n", $userinput);
3594: }
3595:
3596: return 1;
3597: }
3598: ®ister_handler("currentdump", \&dump_profile_database, 0, 1, 0);
3599:
3600: #
3601: # Dump a profile database with an optional regular expression
3602: # to match against the keys. In this dump, no effort is made
3603: # to separate symb from version information. Presumably the
3604: # databases that are dumped by this command are of a different
3605: # structure. Need to look at this and improve the documentation of
3606: # both this and the currentdump handler.
3607: # Parameters:
3608: # $cmd - The command keyword.
3609: # $tail - All of the characters after the $cmd:
3610: # These are expected to be a colon
3611: # separated list containing:
3612: # domain/user - identifying the user.
3613: # namespace - identifying the database.
3614: # regexp - optional regular expression
3615: # that is matched against
3616: # database keywords to do
3617: # selective dumps.
1.488 raeburn 3618: # range - optional range of entries
3619: # e.g., 10-20 would return the
3620: # 10th to 19th items, etc.
1.231 foxr 3621: # $client - Channel open on the client.
3622: # Returns:
3623: # 1 - Continue processing.
3624: # Side effects:
3625: # response is written to $client.
3626: #
3627: sub dump_with_regexp {
3628: my ($cmd, $tail, $client) = @_;
3629:
1.494 droeschl 3630: my $res = LONCAPA::Lond::dump_with_regexp($tail, $clientversion);
1.490 droeschl 3631:
3632: if ($res =~ /^error:/) {
3633: Failure($client, \$res, "$cmd:$tail");
3634: } else {
3635: Reply($client, \$res, "$cmd:$tail");
3636: }
1.231 foxr 3637:
3638: return 1;
3639: }
3640: ®ister_handler("dump", \&dump_with_regexp, 0, 1, 0);
3641:
3642: # Store a set of key=value pairs associated with a versioned name.
3643: #
3644: # Parameters:
3645: # $cmd - Request command keyword.
3646: # $tail - Tail of the request. This is a colon
3647: # separated list containing:
3648: # domain/user - User and authentication domain.
3649: # namespace - Name of the database being modified
3650: # rid - Resource keyword to modify.
3651: # what - new value associated with rid.
1.512 raeburn 3652: # laststore - (optional) version=timestamp
3653: # for most recent transaction for rid
3654: # in namespace, when cstore was called
1.231 foxr 3655: #
3656: # $client - Socket open on the client.
3657: #
3658: #
3659: # Returns:
3660: # 1 (keep on processing).
3661: # Side-Effects:
3662: # Writes to the client
1.512 raeburn 3663: # Successful storage will cause either 'ok', or, if $laststore was included
3664: # in the tail of the request, and the version number for the last transaction
3665: # is larger than the version in $laststore, delay:$numtrans , where $numtrans
3666: # is the number of store evevnts recorded for rid in namespace since
3667: # lonnet::store() was called by the client.
3668: #
1.231 foxr 3669: sub store_handler {
3670: my ($cmd, $tail, $client) = @_;
3671:
3672: my $userinput = "$cmd:$tail";
1.512 raeburn 3673: chomp($tail);
3674: my ($udom,$uname,$namespace,$rid,$what,$laststore) =split(/:/,$tail);
1.231 foxr 3675: if ($namespace ne 'roles') {
3676:
3677: my @pairs=split(/\&/,$what);
3678: my $hashref = &tie_user_hash($udom, $uname, $namespace,
1.268 albertel 3679: &GDBM_WRCREAT(), "S",
1.231 foxr 3680: "$rid:$what");
3681: if ($hashref) {
3682: my $now = time;
1.512 raeburn 3683: my $numtrans;
3684: if ($laststore) {
3685: my ($previousversion,$previoustime) = split(/\=/,$laststore);
3686: my ($lastversion,$lasttime) = (0,0);
3687: $lastversion = $hashref->{"version:$rid"};
3688: if ($lastversion) {
3689: $lasttime = $hashref->{"$lastversion:$rid:timestamp"};
3690: }
3691: if (($previousversion) && ($previousversion !~ /\D/)) {
3692: if (($lastversion > $previousversion) && ($lasttime >= $previoustime)) {
3693: $numtrans = $lastversion - $previousversion;
3694: }
3695: } elsif ($lastversion) {
3696: $numtrans = $lastversion;
3697: }
3698: if ($numtrans) {
3699: $numtrans =~ s/D//g;
3700: }
3701: }
1.231 foxr 3702: $hashref->{"version:$rid"}++;
3703: my $version=$hashref->{"version:$rid"};
3704: my $allkeys='';
3705: foreach my $pair (@pairs) {
3706: my ($key,$value)=split(/=/,$pair);
3707: $allkeys.=$key.':';
3708: $hashref->{"$version:$rid:$key"}=$value;
3709: }
3710: $hashref->{"$version:$rid:timestamp"}=$now;
3711: $allkeys.='timestamp';
3712: $hashref->{"$version:keys:$rid"}=$allkeys;
1.311 albertel 3713: if (&untie_user_hash($hashref)) {
1.512 raeburn 3714: my $msg = 'ok';
3715: if ($numtrans) {
3716: $msg = 'delay:'.$numtrans;
3717: }
3718: &Reply($client, "$msg\n", $userinput);
1.231 foxr 3719: } else {
3720: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
3721: "while attempting store\n", $userinput);
3722: }
3723: } else {
3724: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
3725: "while attempting store\n", $userinput);
3726: }
3727: } else {
3728: &Failure($client, "refused\n", $userinput);
3729: }
3730:
3731: return 1;
3732: }
3733: ®ister_handler("store", \&store_handler, 0, 1, 0);
1.263 albertel 3734:
1.323 albertel 3735: # Modify a set of key=value pairs associated with a versioned name.
3736: #
3737: # Parameters:
3738: # $cmd - Request command keyword.
3739: # $tail - Tail of the request. This is a colon
3740: # separated list containing:
3741: # domain/user - User and authentication domain.
3742: # namespace - Name of the database being modified
3743: # rid - Resource keyword to modify.
3744: # v - Version item to modify
3745: # what - new value associated with rid.
3746: #
3747: # $client - Socket open on the client.
3748: #
3749: #
3750: # Returns:
3751: # 1 (keep on processing).
3752: # Side-Effects:
3753: # Writes to the client
3754: sub putstore_handler {
3755: my ($cmd, $tail, $client) = @_;
3756:
3757: my $userinput = "$cmd:$tail";
3758:
3759: my ($udom,$uname,$namespace,$rid,$v,$what) =split(/:/,$tail);
3760: if ($namespace ne 'roles') {
3761:
3762: chomp($what);
3763: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3764: &GDBM_WRCREAT(), "M",
3765: "$rid:$v:$what");
3766: if ($hashref) {
3767: my $now = time;
3768: my %data = &hash_extract($what);
3769: my @allkeys;
3770: while (my($key,$value) = each(%data)) {
3771: push(@allkeys,$key);
3772: $hashref->{"$v:$rid:$key"} = $value;
3773: }
3774: my $allkeys = join(':',@allkeys);
3775: $hashref->{"$v:keys:$rid"}=$allkeys;
3776:
3777: if (&untie_user_hash($hashref)) {
3778: &Reply($client, "ok\n", $userinput);
3779: } else {
3780: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
3781: "while attempting store\n", $userinput);
3782: }
3783: } else {
3784: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
3785: "while attempting store\n", $userinput);
3786: }
3787: } else {
3788: &Failure($client, "refused\n", $userinput);
3789: }
3790:
3791: return 1;
3792: }
3793: ®ister_handler("putstore", \&putstore_handler, 0, 1, 0);
3794:
3795: sub hash_extract {
3796: my ($str)=@_;
3797: my %hash;
3798: foreach my $pair (split(/\&/,$str)) {
3799: my ($key,$value)=split(/=/,$pair);
3800: $hash{$key}=$value;
3801: }
3802: return (%hash);
3803: }
3804: sub hash_to_str {
3805: my ($hash_ref)=@_;
3806: my $str;
3807: foreach my $key (keys(%$hash_ref)) {
3808: $str.=$key.'='.$hash_ref->{$key}.'&';
3809: }
3810: $str=~s/\&$//;
3811: return $str;
3812: }
3813:
1.231 foxr 3814: #
3815: # Dump out all versions of a resource that has key=value pairs associated
3816: # with it for each version. These resources are built up via the store
3817: # command.
3818: #
3819: # Parameters:
3820: # $cmd - Command keyword.
3821: # $tail - Remainder of the request which consists of:
3822: # domain/user - User and auth. domain.
3823: # namespace - name of resource database.
3824: # rid - Resource id.
3825: # $client - socket open on the client.
3826: #
3827: # Returns:
3828: # 1 indicating the caller should not yet exit.
3829: # Side-effects:
3830: # Writes a reply to the client.
3831: # The reply is a string of the following shape:
3832: # version=current&version:keys=k1:k2...&1:k1=v1&1:k2=v2...
3833: # Where the 1 above represents version 1.
3834: # this continues for all pairs of keys in all versions.
3835: #
3836: #
3837: #
3838: #
3839: sub restore_handler {
3840: my ($cmd, $tail, $client) = @_;
3841:
3842: my $userinput = "$cmd:$tail"; # Only used for logging purposes.
1.351 banghart 3843: my ($udom,$uname,$namespace,$rid) = split(/:/,$tail);
1.352 albertel 3844: $namespace=~s/\//\_/g;
1.350 albertel 3845: $namespace = &LONCAPA::clean_username($namespace);
1.349 albertel 3846:
1.231 foxr 3847: chomp($rid);
3848: my $qresult='';
1.309 albertel 3849: my $hashref = &tie_user_hash($udom, $uname, $namespace, &GDBM_READER());
3850: if ($hashref) {
3851: my $version=$hashref->{"version:$rid"};
1.231 foxr 3852: $qresult.="version=$version&";
3853: my $scope;
3854: for ($scope=1;$scope<=$version;$scope++) {
1.309 albertel 3855: my $vkeys=$hashref->{"$scope:keys:$rid"};
1.231 foxr 3856: my @keys=split(/:/,$vkeys);
3857: my $key;
3858: $qresult.="$scope:keys=$vkeys&";
3859: foreach $key (@keys) {
1.309 albertel 3860: $qresult.="$scope:$key=".$hashref->{"$scope:$rid:$key"}."&";
1.231 foxr 3861: }
3862: }
1.311 albertel 3863: if (&untie_user_hash($hashref)) {
1.231 foxr 3864: $qresult=~s/\&$//;
1.387 albertel 3865: &Reply( $client, \$qresult, $userinput);
1.231 foxr 3866: } else {
3867: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
3868: "while attempting restore\n", $userinput);
3869: }
3870: } else {
3871: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
3872: "while attempting restore\n", $userinput);
3873: }
3874:
3875: return 1;
3876:
3877:
3878: }
3879: ®ister_handler("restore", \&restore_handler, 0,1,0);
1.234 foxr 3880:
3881: #
1.324 raeburn 3882: # Add a chat message to a synchronous discussion board.
1.234 foxr 3883: #
3884: # Parameters:
3885: # $cmd - Request keyword.
3886: # $tail - Tail of the command. A colon separated list
3887: # containing:
3888: # cdom - Domain on which the chat board lives
1.324 raeburn 3889: # cnum - Course containing the chat board.
3890: # newpost - Body of the posting.
3891: # group - Optional group, if chat board is only
3892: # accessible in a group within the course
1.234 foxr 3893: # $client - Socket open on the client.
3894: # Returns:
3895: # 1 - Indicating caller should keep on processing.
3896: #
3897: # Side-effects:
3898: # writes a reply to the client.
3899: #
3900: #
3901: sub send_chat_handler {
3902: my ($cmd, $tail, $client) = @_;
3903:
3904:
3905: my $userinput = "$cmd:$tail";
3906:
1.324 raeburn 3907: my ($cdom,$cnum,$newpost,$group)=split(/\:/,$tail);
3908: &chat_add($cdom,$cnum,$newpost,$group);
1.234 foxr 3909: &Reply($client, "ok\n", $userinput);
3910:
3911: return 1;
3912: }
3913: ®ister_handler("chatsend", \&send_chat_handler, 0, 1, 0);
1.263 albertel 3914:
1.234 foxr 3915: #
1.324 raeburn 3916: # Retrieve the set of chat messages from a discussion board.
1.234 foxr 3917: #
3918: # Parameters:
3919: # $cmd - Command keyword that initiated the request.
3920: # $tail - Remainder of the request after the command
3921: # keyword. In this case a colon separated list of
3922: # chat domain - Which discussion board.
3923: # chat id - Discussion thread(?)
3924: # domain/user - Authentication domain and username
3925: # of the requesting person.
1.324 raeburn 3926: # group - Optional course group containing
3927: # the board.
1.234 foxr 3928: # $client - Socket open on the client program.
3929: # Returns:
3930: # 1 - continue processing
3931: # Side effects:
3932: # Response is written to the client.
3933: #
3934: sub retrieve_chat_handler {
3935: my ($cmd, $tail, $client) = @_;
3936:
3937:
3938: my $userinput = "$cmd:$tail";
3939:
1.324 raeburn 3940: my ($cdom,$cnum,$udom,$uname,$group)=split(/\:/,$tail);
1.234 foxr 3941: my $reply='';
1.324 raeburn 3942: foreach (&get_chat($cdom,$cnum,$udom,$uname,$group)) {
1.234 foxr 3943: $reply.=&escape($_).':';
3944: }
3945: $reply=~s/\:$//;
1.387 albertel 3946: &Reply($client, \$reply, $userinput);
1.234 foxr 3947:
3948:
3949: return 1;
3950: }
3951: ®ister_handler("chatretr", \&retrieve_chat_handler, 0, 1, 0);
3952:
3953: #
3954: # Initiate a query of an sql database. SQL query repsonses get put in
3955: # a file for later retrieval. This prevents sql query results from
3956: # bottlenecking the system. Note that with loncnew, perhaps this is
3957: # less of an issue since multiple outstanding requests can be concurrently
3958: # serviced.
3959: #
3960: # Parameters:
3961: # $cmd - COmmand keyword that initiated the request.
3962: # $tail - Remainder of the command after the keyword.
3963: # For this function, this consists of a query and
3964: # 3 arguments that are self-documentingly labelled
3965: # in the original arg1, arg2, arg3.
3966: # $client - Socket open on the client.
3967: # Return:
3968: # 1 - Indicating processing should continue.
3969: # Side-effects:
3970: # a reply is written to $client.
3971: #
3972: sub send_query_handler {
3973: my ($cmd, $tail, $client) = @_;
3974:
3975:
3976: my $userinput = "$cmd:$tail";
3977:
3978: my ($query,$arg1,$arg2,$arg3)=split(/\:/,$tail);
3979: $query=~s/\n*$//g;
3980: &Reply($client, "". &sql_reply("$clientname\&$query".
3981: "\&$arg1"."\&$arg2"."\&$arg3")."\n",
3982: $userinput);
3983:
3984: return 1;
3985: }
3986: ®ister_handler("querysend", \&send_query_handler, 0, 1, 0);
3987:
3988: #
3989: # Add a reply to an sql query. SQL queries are done asyncrhonously.
3990: # The query is submitted via a "querysend" transaction.
3991: # There it is passed on to the lonsql daemon, queued and issued to
3992: # mysql.
3993: # This transaction is invoked when the sql transaction is complete
3994: # it stores the query results in flie and indicates query completion.
3995: # presumably local software then fetches this response... I'm guessing
3996: # the sequence is: lonc does a querysend, we ask lonsql to do it.
3997: # lonsql on completion of the query interacts with the lond of our
3998: # client to do a query reply storing two files:
3999: # - id - The results of the query.
4000: # - id.end - Indicating the transaction completed.
4001: # NOTE: id is a unique id assigned to the query and querysend time.
4002: # Parameters:
4003: # $cmd - Command keyword that initiated this request.
4004: # $tail - Remainder of the tail. In this case that's a colon
4005: # separated list containing the query Id and the
4006: # results of the query.
4007: # $client - Socket open on the client.
4008: # Return:
4009: # 1 - Indicating that we should continue processing.
4010: # Side effects:
4011: # ok written to the client.
4012: #
4013: sub reply_query_handler {
4014: my ($cmd, $tail, $client) = @_;
4015:
4016:
4017: my $userinput = "$cmd:$tail";
4018:
1.339 albertel 4019: my ($id,$reply)=split(/:/,$tail);
1.234 foxr 4020: my $store;
4021: my $execdir=$perlvar{'lonDaemons'};
4022: if ($store=IO::File->new(">$execdir/tmp/$id")) {
4023: $reply=~s/\&/\n/g;
4024: print $store $reply;
4025: close $store;
4026: my $store2=IO::File->new(">$execdir/tmp/$id.end");
4027: print $store2 "done\n";
4028: close $store2;
4029: &Reply($client, "ok\n", $userinput);
4030: } else {
4031: &Failure($client, "error: ".($!+0)
4032: ." IO::File->new Failed ".
4033: "while attempting queryreply\n", $userinput);
4034: }
4035:
4036:
4037: return 1;
4038: }
4039: ®ister_handler("queryreply", \&reply_query_handler, 0, 1, 0);
4040:
4041: #
4042: # Process the courseidput request. Not quite sure what this means
4043: # at the system level sense. It appears a gdbm file in the
4044: # /home/httpd/lonUsers/$domain/nohist_courseids is tied and
4045: # a set of entries made in that database.
4046: #
4047: # Parameters:
4048: # $cmd - The command keyword that initiated this request.
4049: # $tail - Tail of the command. In this case consists of a colon
4050: # separated list contaning the domain to apply this to and
4051: # an ampersand separated list of keyword=value pairs.
1.272 raeburn 4052: # Each value is a colon separated list that includes:
4053: # description, institutional code and course owner.
4054: # For backward compatibility with versions included
4055: # in LON-CAPA 1.1.X (and earlier) and 1.2.X, institutional
4056: # code and/or course owner are preserved from the existing
4057: # record when writing a new record in response to 1.1 or
4058: # 1.2 implementations of lonnet::flushcourselogs().
4059: #
1.234 foxr 4060: # $client - Socket open on the client.
4061: # Returns:
4062: # 1 - indicating that processing should continue
4063: #
4064: # Side effects:
4065: # reply is written to the client.
4066: #
4067: sub put_course_id_handler {
4068: my ($cmd, $tail, $client) = @_;
4069:
4070:
4071: my $userinput = "$cmd:$tail";
4072:
1.266 raeburn 4073: my ($udom, $what) = split(/:/, $tail,2);
1.234 foxr 4074: chomp($what);
4075: my $now=time;
4076: my @pairs=split(/\&/,$what);
4077:
4078: my $hashref = &tie_domain_hash($udom, "nohist_courseids", &GDBM_WRCREAT());
4079: if ($hashref) {
4080: foreach my $pair (@pairs) {
1.271 raeburn 4081: my ($key,$courseinfo) = split(/=/,$pair,2);
4082: $courseinfo =~ s/=/:/g;
1.384 raeburn 4083: if (defined($hashref->{$key})) {
4084: my $value = &Apache::lonnet::thaw_unescape($hashref->{$key});
4085: if (ref($value) eq 'HASH') {
4086: my @items = ('description','inst_code','owner','type');
4087: my @new_items = split(/:/,$courseinfo,-1);
4088: my %storehash;
4089: for (my $i=0; $i<@new_items; $i++) {
1.391 raeburn 4090: $storehash{$items[$i]} = &unescape($new_items[$i]);
1.384 raeburn 4091: }
4092: $hashref->{$key} =
4093: &Apache::lonnet::freeze_escape(\%storehash);
4094: my $unesc_key = &unescape($key);
4095: $hashref->{&escape('lasttime:'.$unesc_key)} = $now;
4096: next;
1.383 raeburn 4097: }
1.384 raeburn 4098: }
4099: my @current_items = split(/:/,$hashref->{$key},-1);
4100: shift(@current_items); # remove description
4101: pop(@current_items); # remove last access
4102: my $numcurrent = scalar(@current_items);
4103: if ($numcurrent > 3) {
4104: $numcurrent = 3;
4105: }
4106: my @new_items = split(/:/,$courseinfo,-1);
4107: my $numnew = scalar(@new_items);
4108: if ($numcurrent > 0) {
4109: if ($numnew <= $numcurrent) { # flushcourselogs() from pre 2.2
4110: for (my $j=$numcurrent-$numnew; $j>=0; $j--) {
4111: $courseinfo .= ':'.$current_items[$numcurrent-$j-1];
1.333 raeburn 4112: }
1.272 raeburn 4113: }
4114: }
1.384 raeburn 4115: $hashref->{$key}=$courseinfo.':'.$now;
1.234 foxr 4116: }
1.311 albertel 4117: if (&untie_domain_hash($hashref)) {
1.253 foxr 4118: &Reply( $client, "ok\n", $userinput);
1.234 foxr 4119: } else {
1.253 foxr 4120: &Failure($client, "error: ".($!+0)
1.234 foxr 4121: ." untie(GDBM) Failed ".
4122: "while attempting courseidput\n", $userinput);
4123: }
4124: } else {
1.253 foxr 4125: &Failure($client, "error: ".($!+0)
1.234 foxr 4126: ." tie(GDBM) Failed ".
4127: "while attempting courseidput\n", $userinput);
4128: }
4129:
4130: return 1;
4131: }
4132: ®ister_handler("courseidput", \&put_course_id_handler, 0, 1, 0);
4133:
1.383 raeburn 4134: sub put_course_id_hash_handler {
4135: my ($cmd, $tail, $client) = @_;
4136: my $userinput = "$cmd:$tail";
1.384 raeburn 4137: my ($udom,$mode,$what) = split(/:/, $tail,3);
1.383 raeburn 4138: chomp($what);
4139: my $now=time;
4140: my @pairs=split(/\&/,$what);
1.384 raeburn 4141: my $hashref = &tie_domain_hash($udom, "nohist_courseids", &GDBM_WRCREAT());
1.383 raeburn 4142: if ($hashref) {
4143: foreach my $pair (@pairs) {
4144: my ($key,$value)=split(/=/,$pair);
1.384 raeburn 4145: my $unesc_key = &unescape($key);
4146: if ($mode ne 'timeonly') {
4147: if (!defined($hashref->{&escape('lasttime:'.$unesc_key)})) {
4148: my $curritems = &Apache::lonnet::thaw_unescape($key);
4149: if (ref($curritems) ne 'HASH') {
4150: my @current_items = split(/:/,$hashref->{$key},-1);
4151: my $lasttime = pop(@current_items);
4152: $hashref->{&escape('lasttime:'.$unesc_key)} = $lasttime;
4153: } else {
4154: $hashref->{&escape('lasttime:'.$unesc_key)} = '';
4155: }
4156: }
4157: $hashref->{$key} = $value;
4158: }
4159: if ($mode ne 'notime') {
4160: $hashref->{&escape('lasttime:'.$unesc_key)} = $now;
4161: }
1.383 raeburn 4162: }
4163: if (&untie_domain_hash($hashref)) {
4164: &Reply($client, "ok\n", $userinput);
4165: } else {
4166: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4167: "while attempting courseidputhash\n", $userinput);
4168: }
4169: } else {
4170: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
4171: "while attempting courseidputhash\n", $userinput);
4172: }
4173: return 1;
4174: }
4175: ®ister_handler("courseidputhash", \&put_course_id_hash_handler, 0, 1, 0);
4176:
1.234 foxr 4177: # Retrieves the value of a course id resource keyword pattern
4178: # defined since a starting date. Both the starting date and the
4179: # keyword pattern are optional. If the starting date is not supplied it
4180: # is treated as the beginning of time. If the pattern is not found,
4181: # it is treatred as "." matching everything.
4182: #
4183: # Parameters:
4184: # $cmd - Command keyword that resulted in us being dispatched.
4185: # $tail - The remainder of the command that, in this case, consists
4186: # of a colon separated list of:
4187: # domain - The domain in which the course database is
4188: # defined.
4189: # since - Optional parameter describing the minimum
4190: # time of definition(?) of the resources that
4191: # will match the dump.
4192: # description - regular expression that is used to filter
4193: # the dump. Only keywords matching this regexp
4194: # will be used.
1.272 raeburn 4195: # institutional code - optional supplied code to filter
4196: # the dump. Only courses with an institutional code
4197: # that match the supplied code will be returned.
1.336 raeburn 4198: # owner - optional supplied username and domain of owner to
4199: # filter the dump. Only courses for which the course
4200: # owner matches the supplied username and/or domain
4201: # will be returned. Pre-2.2.0 legacy entries from
4202: # nohist_courseiddump will only contain usernames.
1.384 raeburn 4203: # type - optional parameter for selection
1.418 raeburn 4204: # regexp_ok - if 1 or -1 allow the supplied institutional code
4205: # filter to behave as a regular expression:
4206: # 1 will not exclude the course if the instcode matches the RE
4207: # -1 will exclude the course if the instcode matches the RE
1.384 raeburn 4208: # rtn_as_hash - whether to return the information available for
4209: # each matched item as a frozen hash of all
4210: # key, value pairs in the item's hash, or as a
4211: # colon-separated list of (in order) description,
4212: # institutional code, and course owner.
1.404 raeburn 4213: # selfenrollonly - filter by courses allowing self-enrollment
4214: # now or in the future (selfenrollonly = 1).
4215: # catfilter - filter by course category, assigned to a course
4216: # using manually defined categories (i.e., not
1.407 raeburn 4217: # self-cataloging based on on institutional code).
1.404 raeburn 4218: # showhidden - include course in results even if course
1.407 raeburn 4219: # was set to be excluded from course catalog (DC only).
1.404 raeburn 4220: # caller - if set to 'coursecatalog', courses set to be hidden
4221: # from course catalog will be excluded from results (unless
4222: # overridden by "showhidden".
1.427 raeburn 4223: # cloner - escaped username:domain of course cloner (if picking course to
1.419 raeburn 4224: # clone).
4225: # cc_clone_list - escaped comma separated list of courses for which
4226: # course cloner has active CC role (and so can clone
4227: # automatically).
1.427 raeburn 4228: # cloneonly - filter by courses for which cloner has rights to clone.
4229: # createdbefore - include courses for which creation date preceeded this date.
4230: # createdafter - include courses for which creation date followed this date.
4231: # creationcontext - include courses created in specified context
1.404 raeburn 4232: #
1.445 raeburn 4233: # domcloner - flag to indicate if user can create CCs in course's domain.
1.505 raeburn 4234: # If so, ability to clone course is automatic.
4235: # hasuniquecode - filter by courses for which a six character unique code has
4236: # been set.
1.445 raeburn 4237: #
1.234 foxr 4238: # $client - The socket open on the client.
4239: # Returns:
4240: # 1 - Continue processing.
4241: # Side Effects:
4242: # a reply is written to $client.
4243: sub dump_course_id_handler {
4244: my ($cmd, $tail, $client) = @_;
1.494 droeschl 4245:
4246: my $res = LONCAPA::Lond::dump_course_id_handler($tail);
4247: if ($res =~ /^error:/) {
4248: Failure($client, \$res, "$cmd:$tail");
4249: } else {
4250: Reply($client, \$res, "$cmd:$tail");
4251: }
4252:
4253: return 1;
4254:
4255: #TODO remove
1.234 foxr 4256: my $userinput = "$cmd:$tail";
4257:
1.333 raeburn 4258: my ($udom,$since,$description,$instcodefilter,$ownerfilter,$coursefilter,
1.404 raeburn 4259: $typefilter,$regexp_ok,$rtn_as_hash,$selfenrollonly,$catfilter,$showhidden,
1.427 raeburn 4260: $caller,$cloner,$cc_clone_list,$cloneonly,$createdbefore,$createdafter,
1.505 raeburn 4261: $creationcontext,$domcloner,$hasuniquecode) =split(/:/,$tail);
1.397 raeburn 4262: my $now = time;
1.419 raeburn 4263: my ($cloneruname,$clonerudom,%cc_clone);
1.234 foxr 4264: if (defined($description)) {
4265: $description=&unescape($description);
4266: } else {
4267: $description='.';
4268: }
1.266 raeburn 4269: if (defined($instcodefilter)) {
4270: $instcodefilter=&unescape($instcodefilter);
4271: } else {
4272: $instcodefilter='.';
4273: }
1.336 raeburn 4274: my ($ownerunamefilter,$ownerdomfilter);
1.266 raeburn 4275: if (defined($ownerfilter)) {
4276: $ownerfilter=&unescape($ownerfilter);
1.336 raeburn 4277: if ($ownerfilter ne '.' && defined($ownerfilter)) {
4278: if ($ownerfilter =~ /^([^:]*):([^:]*)$/) {
4279: $ownerunamefilter = $1;
4280: $ownerdomfilter = $2;
4281: } else {
4282: $ownerunamefilter = $ownerfilter;
4283: $ownerdomfilter = '';
4284: }
4285: }
1.266 raeburn 4286: } else {
4287: $ownerfilter='.';
4288: }
1.336 raeburn 4289:
1.282 raeburn 4290: if (defined($coursefilter)) {
4291: $coursefilter=&unescape($coursefilter);
4292: } else {
4293: $coursefilter='.';
4294: }
1.333 raeburn 4295: if (defined($typefilter)) {
4296: $typefilter=&unescape($typefilter);
4297: } else {
4298: $typefilter='.';
4299: }
1.344 raeburn 4300: if (defined($regexp_ok)) {
4301: $regexp_ok=&unescape($regexp_ok);
4302: }
1.401 raeburn 4303: if (defined($catfilter)) {
4304: $catfilter=&unescape($catfilter);
4305: }
1.419 raeburn 4306: if (defined($cloner)) {
4307: $cloner = &unescape($cloner);
4308: ($cloneruname,$clonerudom) = ($cloner =~ /^($LONCAPA::match_username):($LONCAPA::match_domain)$/);
4309: }
4310: if (defined($cc_clone_list)) {
4311: $cc_clone_list = &unescape($cc_clone_list);
4312: my @cc_cloners = split('&',$cc_clone_list);
4313: foreach my $cid (@cc_cloners) {
4314: my ($clonedom,$clonenum) = split(':',$cid);
4315: next if ($clonedom ne $udom);
4316: $cc_clone{$clonedom.'_'.$clonenum} = 1;
4317: }
4318: }
1.431 raeburn 4319: if ($createdbefore ne '') {
1.427 raeburn 4320: $createdbefore = &unescape($createdbefore);
4321: } else {
4322: $createdbefore = 0;
4323: }
1.431 raeburn 4324: if ($createdafter ne '') {
1.427 raeburn 4325: $createdafter = &unescape($createdafter);
4326: } else {
4327: $createdafter = 0;
4328: }
1.431 raeburn 4329: if ($creationcontext ne '') {
1.427 raeburn 4330: $creationcontext = &unescape($creationcontext);
4331: } else {
4332: $creationcontext = '.';
4333: }
1.505 raeburn 4334: unless ($hasuniquecode) {
4335: $hasuniquecode = '.';
4336: }
1.384 raeburn 4337: my $unpack = 1;
1.485 raeburn 4338: if ($description eq '.' && $instcodefilter eq '.' && $ownerfilter eq '.' &&
1.384 raeburn 4339: $typefilter eq '.') {
4340: $unpack = 0;
4341: }
4342: if (!defined($since)) { $since=0; }
1.234 foxr 4343: my $qresult='';
4344: my $hashref = &tie_domain_hash($udom, "nohist_courseids", &GDBM_WRCREAT());
4345: if ($hashref) {
1.384 raeburn 4346: while (my ($key,$value) = each(%$hashref)) {
1.397 raeburn 4347: my ($unesc_key,$lasttime_key,$lasttime,$is_hash,%val,
1.427 raeburn 4348: %unesc_val,$selfenroll_end,$selfenroll_types,$created,
4349: $context);
1.384 raeburn 4350: $unesc_key = &unescape($key);
4351: if ($unesc_key =~ /^lasttime:/) {
4352: next;
4353: } else {
4354: $lasttime_key = &escape('lasttime:'.$unesc_key);
4355: }
4356: if ($hashref->{$lasttime_key} ne '') {
4357: $lasttime = $hashref->{$lasttime_key};
4358: next if ($lasttime<$since);
4359: }
1.419 raeburn 4360: my ($canclone,$valchange);
1.384 raeburn 4361: my $items = &Apache::lonnet::thaw_unescape($value);
4362: if (ref($items) eq 'HASH') {
1.429 raeburn 4363: if ($hashref->{$lasttime_key} eq '') {
1.430 raeburn 4364: next if ($since > 1);
1.429 raeburn 4365: }
1.384 raeburn 4366: $is_hash = 1;
1.445 raeburn 4367: if ($domcloner) {
4368: $canclone = 1;
4369: } elsif (defined($clonerudom)) {
1.419 raeburn 4370: if ($items->{'cloners'}) {
4371: my @cloneable = split(',',$items->{'cloners'});
4372: if (@cloneable) {
4373: if (grep(/^\*$/,@cloneable)) {
4374: $canclone = 1;
4375: } elsif (grep(/^\*:\Q$clonerudom\E$/,@cloneable)) {
4376: $canclone = 1;
4377: } elsif (grep(/^\Q$cloneruname\E:\Q$clonerudom\E$/,@cloneable)) {
4378: $canclone = 1;
4379: }
4380: }
4381: unless ($canclone) {
4382: if ($cloneruname ne '' && $clonerudom ne '') {
4383: if ($cc_clone{$unesc_key}) {
4384: $canclone = 1;
4385: $items->{'cloners'} .= ','.$cloneruname.':'.
4386: $clonerudom;
4387: $valchange = 1;
4388: }
4389: }
4390: }
4391: } elsif (defined($cloneruname)) {
4392: if ($cc_clone{$unesc_key}) {
4393: $canclone = 1;
4394: $items->{'cloners'} = $cloneruname.':'.$clonerudom;
4395: $valchange = 1;
4396: }
1.437 raeburn 4397: unless ($canclone) {
4398: if ($items->{'owner'} =~ /:/) {
4399: if ($items->{'owner'} eq $cloner) {
4400: $canclone = 1;
4401: }
1.444 raeburn 4402: } elsif ($cloner eq $items->{'owner'}.':'.$udom) {
1.437 raeburn 4403: $canclone = 1;
4404: }
4405: if ($canclone) {
4406: $items->{'cloners'} = $cloneruname.':'.$clonerudom;
4407: $valchange = 1;
4408: }
4409: }
1.419 raeburn 4410: }
4411: }
1.384 raeburn 4412: if ($unpack || !$rtn_as_hash) {
4413: $unesc_val{'descr'} = $items->{'description'};
4414: $unesc_val{'inst_code'} = $items->{'inst_code'};
4415: $unesc_val{'owner'} = $items->{'owner'};
4416: $unesc_val{'type'} = $items->{'type'};
1.419 raeburn 4417: $unesc_val{'cloners'} = $items->{'cloners'};
1.427 raeburn 4418: $unesc_val{'created'} = $items->{'created'};
4419: $unesc_val{'context'} = $items->{'context'};
1.404 raeburn 4420: }
4421: $selfenroll_types = $items->{'selfenroll_types'};
4422: $selfenroll_end = $items->{'selfenroll_end_date'};
1.427 raeburn 4423: $created = $items->{'created'};
4424: $context = $items->{'context'};
1.505 raeburn 4425: if ($hasuniquecode ne '.') {
4426: next unless ($items->{'uniquecode'});
4427: }
1.404 raeburn 4428: if ($selfenrollonly) {
4429: next if (!$selfenroll_types);
4430: if (($selfenroll_end > 0) && ($selfenroll_end <= $now)) {
4431: next;
1.397 raeburn 4432: }
1.404 raeburn 4433: }
1.427 raeburn 4434: if ($creationcontext ne '.') {
4435: next if (($context ne '') && ($context ne $creationcontext));
4436: }
4437: if ($createdbefore > 0) {
4438: next if (($created eq '') || ($created > $createdbefore));
4439: }
4440: if ($createdafter > 0) {
4441: next if (($created eq '') || ($created <= $createdafter));
4442: }
1.404 raeburn 4443: if ($catfilter ne '') {
1.406 raeburn 4444: next if ($items->{'categories'} eq '');
4445: my @categories = split('&',$items->{'categories'});
1.407 raeburn 4446: next if (@categories == 0);
4447: my @subcats = split('&',$catfilter);
4448: my $matchcat = 0;
4449: foreach my $cat (@categories) {
4450: if (grep(/^\Q$cat\E$/,@subcats)) {
4451: $matchcat = 1;
4452: last;
4453: }
4454: }
4455: next if (!$matchcat);
1.404 raeburn 4456: }
4457: if ($caller eq 'coursecatalog') {
1.405 raeburn 4458: if ($items->{'hidefromcat'} eq 'yes') {
4459: next if !$showhidden;
1.401 raeburn 4460: }
1.384 raeburn 4461: }
1.383 raeburn 4462: } else {
1.401 raeburn 4463: next if ($catfilter ne '');
1.419 raeburn 4464: next if ($selfenrollonly);
1.427 raeburn 4465: next if ($createdbefore || $createdafter);
4466: next if ($creationcontext ne '.');
1.419 raeburn 4467: if ((defined($clonerudom)) && (defined($cloneruname))) {
4468: if ($cc_clone{$unesc_key}) {
4469: $canclone = 1;
4470: $val{'cloners'} = &escape($cloneruname.':'.$clonerudom);
4471: }
4472: }
1.384 raeburn 4473: $is_hash = 0;
1.388 raeburn 4474: my @courseitems = split(/:/,$value);
1.403 raeburn 4475: $lasttime = pop(@courseitems);
1.402 raeburn 4476: if ($hashref->{$lasttime_key} eq '') {
4477: next if ($lasttime<$since);
4478: }
1.384 raeburn 4479: ($val{'descr'},$val{'inst_code'},$val{'owner'},$val{'type'}) = @courseitems;
1.383 raeburn 4480: }
1.419 raeburn 4481: if ($cloneonly) {
4482: next unless ($canclone);
4483: }
1.266 raeburn 4484: my $match = 1;
1.384 raeburn 4485: if ($description ne '.') {
4486: if (!$is_hash) {
4487: $unesc_val{'descr'} = &unescape($val{'descr'});
4488: }
4489: if (eval{$unesc_val{'descr'} !~ /\Q$description\E/i}) {
1.266 raeburn 4490: $match = 0;
1.384 raeburn 4491: }
1.266 raeburn 4492: }
1.384 raeburn 4493: if ($instcodefilter ne '.') {
4494: if (!$is_hash) {
4495: $unesc_val{'inst_code'} = &unescape($val{'inst_code'});
4496: }
1.418 raeburn 4497: if ($regexp_ok == 1) {
1.384 raeburn 4498: if (eval{$unesc_val{'inst_code'} !~ /$instcodefilter/}) {
1.344 raeburn 4499: $match = 0;
4500: }
1.418 raeburn 4501: } elsif ($regexp_ok == -1) {
4502: if (eval{$unesc_val{'inst_code'} =~ /$instcodefilter/}) {
4503: $match = 0;
4504: }
1.344 raeburn 4505: } else {
1.384 raeburn 4506: if (eval{$unesc_val{'inst_code'} !~ /\Q$instcodefilter\E/i}) {
1.344 raeburn 4507: $match = 0;
4508: }
1.266 raeburn 4509: }
1.234 foxr 4510: }
1.384 raeburn 4511: if ($ownerfilter ne '.') {
4512: if (!$is_hash) {
4513: $unesc_val{'owner'} = &unescape($val{'owner'});
4514: }
1.336 raeburn 4515: if (($ownerunamefilter ne '') && ($ownerdomfilter ne '')) {
1.384 raeburn 4516: if ($unesc_val{'owner'} =~ /:/) {
4517: if (eval{$unesc_val{'owner'} !~
4518: /\Q$ownerunamefilter\E:\Q$ownerdomfilter\E$/i}) {
1.336 raeburn 4519: $match = 0;
4520: }
4521: } else {
1.384 raeburn 4522: if (eval{$unesc_val{'owner'} !~ /\Q$ownerunamefilter\E/i}) {
1.336 raeburn 4523: $match = 0;
4524: }
4525: }
4526: } elsif ($ownerunamefilter ne '') {
1.384 raeburn 4527: if ($unesc_val{'owner'} =~ /:/) {
4528: if (eval{$unesc_val{'owner'} !~ /\Q$ownerunamefilter\E:[^:]+$/i}) {
1.336 raeburn 4529: $match = 0;
4530: }
4531: } else {
1.384 raeburn 4532: if (eval{$unesc_val{'owner'} !~ /\Q$ownerunamefilter\E/i}) {
1.336 raeburn 4533: $match = 0;
4534: }
4535: }
4536: } elsif ($ownerdomfilter ne '') {
1.384 raeburn 4537: if ($unesc_val{'owner'} =~ /:/) {
4538: if (eval{$unesc_val{'owner'} !~ /^[^:]+:\Q$ownerdomfilter\E/}) {
1.336 raeburn 4539: $match = 0;
4540: }
4541: } else {
4542: if ($ownerdomfilter ne $udom) {
4543: $match = 0;
4544: }
4545: }
1.266 raeburn 4546: }
4547: }
1.384 raeburn 4548: if ($coursefilter ne '.') {
4549: if (eval{$unesc_key !~ /^$udom(_)\Q$coursefilter\E$/}) {
1.282 raeburn 4550: $match = 0;
4551: }
4552: }
1.384 raeburn 4553: if ($typefilter ne '.') {
4554: if (!$is_hash) {
4555: $unesc_val{'type'} = &unescape($val{'type'});
4556: }
4557: if ($unesc_val{'type'} eq '') {
1.333 raeburn 4558: if ($typefilter ne 'Course') {
4559: $match = 0;
4560: }
1.383 raeburn 4561: } else {
1.384 raeburn 4562: if (eval{$unesc_val{'type'} !~ /^\Q$typefilter\E$/}) {
1.333 raeburn 4563: $match = 0;
4564: }
4565: }
4566: }
1.266 raeburn 4567: if ($match == 1) {
1.384 raeburn 4568: if ($rtn_as_hash) {
4569: if ($is_hash) {
1.419 raeburn 4570: if ($valchange) {
4571: my $newvalue = &Apache::lonnet::freeze_escape($items);
4572: $qresult.=$key.'='.$newvalue.'&';
4573: } else {
4574: $qresult.=$key.'='.$value.'&';
4575: }
1.384 raeburn 4576: } else {
1.388 raeburn 4577: my %rtnhash = ( 'description' => &unescape($val{'descr'}),
4578: 'inst_code' => &unescape($val{'inst_code'}),
4579: 'owner' => &unescape($val{'owner'}),
4580: 'type' => &unescape($val{'type'}),
1.419 raeburn 4581: 'cloners' => &unescape($val{'cloners'}),
1.384 raeburn 4582: );
4583: my $items = &Apache::lonnet::freeze_escape(\%rtnhash);
4584: $qresult.=$key.'='.$items.'&';
4585: }
1.383 raeburn 4586: } else {
1.384 raeburn 4587: if ($is_hash) {
4588: $qresult .= $key.'='.&escape($unesc_val{'descr'}).':'.
4589: &escape($unesc_val{'inst_code'}).':'.
4590: &escape($unesc_val{'owner'}).'&';
4591: } else {
4592: $qresult .= $key.'='.$val{'descr'}.':'.$val{'inst_code'}.
4593: ':'.$val{'owner'}.'&';
4594: }
1.383 raeburn 4595: }
1.266 raeburn 4596: }
1.234 foxr 4597: }
1.311 albertel 4598: if (&untie_domain_hash($hashref)) {
1.234 foxr 4599: chop($qresult);
1.387 albertel 4600: &Reply($client, \$qresult, $userinput);
1.234 foxr 4601: } else {
4602: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4603: "while attempting courseiddump\n", $userinput);
4604: }
4605: } else {
4606: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
4607: "while attempting courseiddump\n", $userinput);
4608: }
4609: return 1;
4610: }
4611: ®ister_handler("courseiddump", \&dump_course_id_handler, 0, 1, 0);
1.238 foxr 4612:
1.438 raeburn 4613: sub course_lastaccess_handler {
4614: my ($cmd, $tail, $client) = @_;
4615: my $userinput = "$cmd:$tail";
4616: my ($cdom,$cnum) = split(':',$tail);
4617: my (%lastaccess,$qresult);
4618: my $hashref = &tie_domain_hash($cdom, "nohist_courseids", &GDBM_WRCREAT());
4619: if ($hashref) {
4620: while (my ($key,$value) = each(%$hashref)) {
4621: my ($unesc_key,$lasttime);
4622: $unesc_key = &unescape($key);
4623: if ($cnum) {
4624: next unless ($unesc_key =~ /\Q$cdom\E_\Q$cnum\E$/);
4625: }
4626: if ($unesc_key =~ /^lasttime:($LONCAPA::match_domain\_$LONCAPA::match_courseid)/) {
4627: $lastaccess{$1} = $value;
4628: } else {
4629: my $items = &Apache::lonnet::thaw_unescape($value);
4630: if (ref($items) eq 'HASH') {
4631: unless ($lastaccess{$unesc_key}) {
4632: $lastaccess{$unesc_key} = '';
4633: }
4634: } else {
4635: my @courseitems = split(':',$value);
4636: $lastaccess{$unesc_key} = pop(@courseitems);
4637: }
4638: }
4639: }
4640: foreach my $cid (sort(keys(%lastaccess))) {
4641: $qresult.=&escape($cid).'='.$lastaccess{$cid}.'&';
4642: }
4643: if (&untie_domain_hash($hashref)) {
4644: if ($qresult) {
4645: chop($qresult);
4646: }
4647: &Reply($client, \$qresult, $userinput);
4648: } else {
4649: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4650: "while attempting lastacourseaccess\n", $userinput);
4651: }
4652: } else {
4653: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
4654: "while attempting lastcourseaccess\n", $userinput);
4655: }
4656: return 1;
4657: }
4658: ®ister_handler("courselastaccess",\&course_lastaccess_handler, 0, 1, 0);
4659:
1.238 foxr 4660: #
1.348 raeburn 4661: # Puts an unencrypted entry in a namespace db file at the domain level
4662: #
4663: # Parameters:
4664: # $cmd - The command that got us here.
4665: # $tail - Tail of the command (remaining parameters).
4666: # $client - File descriptor connected to client.
4667: # Returns
4668: # 0 - Requested to exit, caller should shut down.
4669: # 1 - Continue processing.
4670: # Side effects:
4671: # reply is written to $client.
4672: #
4673: sub put_domain_handler {
4674: my ($cmd,$tail,$client) = @_;
4675:
4676: my $userinput = "$cmd:$tail";
4677:
4678: my ($udom,$namespace,$what) =split(/:/,$tail,3);
4679: chomp($what);
4680: my @pairs=split(/\&/,$what);
4681: my $hashref = &tie_domain_hash($udom, "$namespace", &GDBM_WRCREAT(),
4682: "P", $what);
4683: if ($hashref) {
4684: foreach my $pair (@pairs) {
4685: my ($key,$value)=split(/=/,$pair);
4686: $hashref->{$key}=$value;
4687: }
4688: if (&untie_domain_hash($hashref)) {
4689: &Reply($client, "ok\n", $userinput);
4690: } else {
4691: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4692: "while attempting putdom\n", $userinput);
4693: }
4694: } else {
4695: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
4696: "while attempting putdom\n", $userinput);
4697: }
4698:
4699: return 1;
4700: }
4701: ®ister_handler("putdom", \&put_domain_handler, 0, 1, 0);
4702:
1.517 raeburn 4703: # Updates one or more entries in clickers.db file at the domain level
4704: #
4705: # Parameters:
4706: # $cmd - The command that got us here.
4707: # $tail - Tail of the command (remaining parameters).
4708: # In this case a colon separated list containing:
4709: # (a) the domain for which we are updating the entries,
4710: # (b) the action required -- add or del -- and
4711: # (c) a &-separated list of entries to add or delete.
4712: # $client - File descriptor connected to client.
4713: # Returns
4714: # 1 - Continue processing.
4715: # 0 - Requested to exit, caller should shut down.
4716: # Side effects:
4717: # reply is written to $client.
4718: #
4719:
4720:
4721: sub update_clickers {
4722: my ($cmd, $tail, $client) = @_;
4723:
4724: my $userinput = "$cmd:$tail";
4725: my ($udom,$action,$what) =split(/:/,$tail,3);
4726: chomp($what);
4727:
4728: my $hashref = &tie_domain_hash($udom, "clickers", &GDBM_WRCREAT(),
4729: "U","$action:$what");
4730:
4731: if (!$hashref) {
4732: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
4733: "while attempting updateclickers\n", $userinput);
4734: return 1;
4735: }
4736:
4737: my @pairs=split(/\&/,$what);
4738: foreach my $pair (@pairs) {
4739: my ($key,$value)=split(/=/,$pair);
4740: if ($action eq 'add') {
4741: if (exists($hashref->{$key})) {
4742: my @newvals = split(/,/,&unescape($value));
4743: my @currvals = split(/,/,&unescape($hashref->{$key}));
4744: my @merged = sort(keys(%{{map { $_ => 1 } (@newvals,@currvals)}}));
4745: $hashref->{$key}=&escape(join(',',@merged));
4746: } else {
4747: $hashref->{$key}=$value;
4748: }
4749: } elsif ($action eq 'del') {
4750: if (exists($hashref->{$key})) {
4751: my %current;
4752: map { $current{$_} = 1; } split(/,/,&unescape($hashref->{$key}));
4753: map { delete($current{$_}); } split(/,/,&unescape($value));
4754: if (keys(%current)) {
4755: $hashref->{$key}=&escape(join(',',sort(keys(%current))));
4756: } else {
4757: delete($hashref->{$key});
4758: }
4759: }
4760: }
4761: }
4762: if (&untie_user_hash($hashref)) {
4763: &Reply( $client, "ok\n", $userinput);
4764: } else {
4765: &Failure($client, "error: ".($!+0)." untie(GDBM) failed ".
4766: "while attempting put\n",
4767: $userinput);
4768: }
4769: return 1;
4770: }
4771: ®ister_handler("updateclickers", \&update_clickers, 0, 1, 0);
4772:
4773:
4774: # Deletes one or more entries in a namespace db file at the domain level
4775: #
4776: # Parameters:
4777: # $cmd - The command that got us here.
4778: # $tail - Tail of the command (remaining parameters).
4779: # In this case a colon separated list containing:
4780: # (a) the domain for which we are deleting the entries,
4781: # (b) &-separated list of keys to delete.
4782: # $client - File descriptor connected to client.
4783: # Returns
4784: # 1 - Continue processing.
4785: # 0 - Requested to exit, caller should shut down.
4786: # Side effects:
4787: # reply is written to $client.
4788: #
4789:
4790: sub del_domain_handler {
4791: my ($cmd,$tail,$client) = @_;
4792:
4793: my $userinput = "$cmd:$tail";
4794:
4795: my ($udom,$namespace,$what)=split(/:/,$tail,3);
4796: chomp($what);
4797: my $hashref = &tie_domain_hash($udom,$namespace,&GDBM_WRCREAT(),
4798: "D", $what);
4799: if ($hashref) {
4800: my @keys=split(/\&/,$what);
4801: foreach my $key (@keys) {
4802: delete($hashref->{$key});
4803: }
4804: if (&untie_user_hash($hashref)) {
4805: &Reply($client, "ok\n", $userinput);
4806: } else {
4807: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4808: "while attempting deldom\n", $userinput);
4809: }
4810: } else {
4811: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
4812: "while attempting deldom\n", $userinput);
4813: }
4814: return 1;
4815: }
4816: ®ister_handler("deldom", \&del_domain_handler, 0, 1, 0);
4817:
4818:
1.348 raeburn 4819: # Unencrypted get from the namespace database file at the domain level.
4820: # This function retrieves a keyed item from a specific named database in the
4821: # domain directory.
4822: #
4823: # Parameters:
4824: # $cmd - Command request keyword (get).
4825: # $tail - Tail of the command. This is a colon separated list
4826: # consisting of the domain and the 'namespace'
4827: # which selects the gdbm file to do the lookup in,
4828: # & separated list of keys to lookup. Note that
4829: # the values are returned as an & separated list too.
4830: # $client - File descriptor open on the client.
4831: # Returns:
4832: # 1 - Continue processing.
4833: # 0 - Exit.
4834: # Side effects:
4835: # reply is written to $client.
4836: #
4837:
4838: sub get_domain_handler {
4839: my ($cmd, $tail, $client) = @_;
4840:
1.461 foxr 4841:
1.348 raeburn 4842: my $userinput = "$client:$tail";
4843:
4844: my ($udom,$namespace,$what)=split(/:/,$tail,3);
4845: chomp($what);
4846: my @queries=split(/\&/,$what);
4847: my $qresult='';
4848: my $hashref = &tie_domain_hash($udom, "$namespace", &GDBM_READER());
4849: if ($hashref) {
4850: for (my $i=0;$i<=$#queries;$i++) {
4851: $qresult.="$hashref->{$queries[$i]}&";
4852: }
4853: if (&untie_domain_hash($hashref)) {
4854: $qresult=~s/\&$//;
1.387 albertel 4855: &Reply($client, \$qresult, $userinput);
1.348 raeburn 4856: } else {
4857: &Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ".
4858: "while attempting getdom\n",$userinput);
4859: }
4860: } else {
4861: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
4862: "while attempting getdom\n",$userinput);
4863: }
4864:
4865: return 1;
4866: }
1.360 raeburn 4867: ®ister_handler("getdom", \&get_domain_handler, 0, 1, 0);
1.348 raeburn 4868:
1.420 raeburn 4869: #
1.238 foxr 4870: # Puts an id to a domains id database.
4871: #
4872: # Parameters:
4873: # $cmd - The command that triggered us.
4874: # $tail - Remainder of the request other than the command. This is a
4875: # colon separated list containing:
4876: # $domain - The domain for which we are writing the id.
4877: # $pairs - The id info to write... this is and & separated list
4878: # of keyword=value.
4879: # $client - Socket open on the client.
4880: # Returns:
4881: # 1 - Continue processing.
4882: # Side effects:
4883: # reply is written to $client.
4884: #
4885: sub put_id_handler {
4886: my ($cmd,$tail,$client) = @_;
4887:
4888:
4889: my $userinput = "$cmd:$tail";
4890:
4891: my ($udom,$what)=split(/:/,$tail);
4892: chomp($what);
4893: my @pairs=split(/\&/,$what);
4894: my $hashref = &tie_domain_hash($udom, "ids", &GDBM_WRCREAT(),
4895: "P", $what);
4896: if ($hashref) {
4897: foreach my $pair (@pairs) {
4898: my ($key,$value)=split(/=/,$pair);
4899: $hashref->{$key}=$value;
4900: }
1.311 albertel 4901: if (&untie_domain_hash($hashref)) {
1.238 foxr 4902: &Reply($client, "ok\n", $userinput);
4903: } else {
4904: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4905: "while attempting idput\n", $userinput);
4906: }
4907: } else {
4908: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
4909: "while attempting idput\n", $userinput);
4910: }
4911:
4912: return 1;
4913: }
1.263 albertel 4914: ®ister_handler("idput", \&put_id_handler, 0, 1, 0);
1.238 foxr 4915:
4916: #
4917: # Retrieves a set of id values from the id database.
4918: # Returns an & separated list of results, one for each requested id to the
4919: # client.
4920: #
4921: # Parameters:
4922: # $cmd - Command keyword that caused us to be dispatched.
4923: # $tail - Tail of the command. Consists of a colon separated:
4924: # domain - the domain whose id table we dump
4925: # ids Consists of an & separated list of
4926: # id keywords whose values will be fetched.
4927: # nonexisting keywords will have an empty value.
4928: # $client - Socket open on the client.
4929: #
4930: # Returns:
4931: # 1 - indicating processing should continue.
4932: # Side effects:
4933: # An & separated list of results is written to $client.
4934: #
4935: sub get_id_handler {
4936: my ($cmd, $tail, $client) = @_;
4937:
4938:
4939: my $userinput = "$client:$tail";
4940:
4941: my ($udom,$what)=split(/:/,$tail);
4942: chomp($what);
4943: my @queries=split(/\&/,$what);
4944: my $qresult='';
4945: my $hashref = &tie_domain_hash($udom, "ids", &GDBM_READER());
4946: if ($hashref) {
4947: for (my $i=0;$i<=$#queries;$i++) {
4948: $qresult.="$hashref->{$queries[$i]}&";
4949: }
1.311 albertel 4950: if (&untie_domain_hash($hashref)) {
1.238 foxr 4951: $qresult=~s/\&$//;
1.387 albertel 4952: &Reply($client, \$qresult, $userinput);
1.238 foxr 4953: } else {
4954: &Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ".
4955: "while attempting idget\n",$userinput);
4956: }
4957: } else {
4958: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
4959: "while attempting idget\n",$userinput);
4960: }
4961:
4962: return 1;
4963: }
1.263 albertel 4964: ®ister_handler("idget", \&get_id_handler, 0, 1, 0);
1.238 foxr 4965:
1.501 raeburn 4966: # Deletes one or more ids in a domain's id database.
4967: #
4968: # Parameters:
4969: # $cmd - Command keyword (iddel).
4970: # $tail - Command tail. In this case a colon
4971: # separated list containing:
4972: # The domain for which we are deleting the id(s).
4973: # &-separated list of id(s) to delete.
4974: # $client - File open on client socket.
4975: # Returns:
4976: # 1 - Continue processing
4977: # 0 - Exit server.
4978: #
4979: #
4980:
4981: sub del_id_handler {
4982: my ($cmd,$tail,$client) = @_;
4983:
4984: my $userinput = "$cmd:$tail";
4985:
4986: my ($udom,$what)=split(/:/,$tail);
4987: chomp($what);
4988: my $hashref = &tie_domain_hash($udom, "ids", &GDBM_WRCREAT(),
4989: "D", $what);
4990: if ($hashref) {
4991: my @keys=split(/\&/,$what);
4992: foreach my $key (@keys) {
4993: delete($hashref->{$key});
4994: }
4995: if (&untie_user_hash($hashref)) {
4996: &Reply($client, "ok\n", $userinput);
4997: } else {
4998: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4999: "while attempting iddel\n", $userinput);
5000: }
5001: } else {
5002: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
5003: "while attempting iddel\n", $userinput);
5004: }
5005: return 1;
5006: }
5007: ®ister_handler("iddel", \&del_id_handler, 0, 1, 0);
5008:
1.238 foxr 5009: #
1.299 raeburn 5010: # Puts broadcast e-mail sent by Domain Coordinator in nohist_dcmail database
5011: #
5012: # Parameters
5013: # $cmd - Command keyword that caused us to be dispatched.
5014: # $tail - Tail of the command. Consists of a colon separated:
5015: # domain - the domain whose dcmail we are recording
5016: # email Consists of key=value pair
5017: # where key is unique msgid
5018: # and value is message (in XML)
5019: # $client - Socket open on the client.
5020: #
5021: # Returns:
5022: # 1 - indicating processing should continue.
5023: # Side effects
5024: # reply is written to $client.
5025: #
5026: sub put_dcmail_handler {
5027: my ($cmd,$tail,$client) = @_;
5028: my $userinput = "$cmd:$tail";
1.463 foxr 5029:
5030:
1.299 raeburn 5031: my ($udom,$what)=split(/:/,$tail);
5032: chomp($what);
5033: my $hashref = &tie_domain_hash($udom, "nohist_dcmail", &GDBM_WRCREAT());
5034: if ($hashref) {
5035: my ($key,$value)=split(/=/,$what);
5036: $hashref->{$key}=$value;
5037: }
1.311 albertel 5038: if (&untie_domain_hash($hashref)) {
1.299 raeburn 5039: &Reply($client, "ok\n", $userinput);
5040: } else {
5041: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
5042: "while attempting dcmailput\n", $userinput);
5043: }
5044: return 1;
5045: }
5046: ®ister_handler("dcmailput", \&put_dcmail_handler, 0, 1, 0);
5047:
5048: #
5049: # Retrieves broadcast e-mail from nohist_dcmail database
5050: # Returns to client an & separated list of key=value pairs,
5051: # where key is msgid and value is message information.
5052: #
5053: # Parameters
5054: # $cmd - Command keyword that caused us to be dispatched.
5055: # $tail - Tail of the command. Consists of a colon separated:
5056: # domain - the domain whose dcmail table we dump
5057: # startfilter - beginning of time window
5058: # endfilter - end of time window
5059: # sendersfilter - & separated list of username:domain
5060: # for senders to search for.
5061: # $client - Socket open on the client.
5062: #
5063: # Returns:
5064: # 1 - indicating processing should continue.
5065: # Side effects
5066: # reply (& separated list of msgid=messageinfo pairs) is
5067: # written to $client.
5068: #
5069: sub dump_dcmail_handler {
5070: my ($cmd, $tail, $client) = @_;
5071:
5072: my $userinput = "$cmd:$tail";
5073: my ($udom,$startfilter,$endfilter,$sendersfilter) = split(/:/,$tail);
5074: chomp($sendersfilter);
5075: my @senders = ();
5076: if (defined($startfilter)) {
5077: $startfilter=&unescape($startfilter);
5078: } else {
5079: $startfilter='.';
5080: }
5081: if (defined($endfilter)) {
5082: $endfilter=&unescape($endfilter);
5083: } else {
5084: $endfilter='.';
5085: }
5086: if (defined($sendersfilter)) {
5087: $sendersfilter=&unescape($sendersfilter);
1.300 albertel 5088: @senders = map { &unescape($_) } split(/\&/,$sendersfilter);
1.299 raeburn 5089: }
5090:
5091: my $qresult='';
5092: my $hashref = &tie_domain_hash($udom, "nohist_dcmail", &GDBM_WRCREAT());
5093: if ($hashref) {
5094: while (my ($key,$value) = each(%$hashref)) {
5095: my $match = 1;
1.303 albertel 5096: my ($timestamp,$subj,$uname,$udom) =
5097: split(/:/,&unescape(&unescape($key)),5); # yes, twice really
1.299 raeburn 5098: $subj = &unescape($subj);
5099: unless ($startfilter eq '.' || !defined($startfilter)) {
5100: if ($timestamp < $startfilter) {
5101: $match = 0;
5102: }
5103: }
5104: unless ($endfilter eq '.' || !defined($endfilter)) {
5105: if ($timestamp > $endfilter) {
5106: $match = 0;
5107: }
5108: }
5109: unless (@senders < 1) {
5110: unless (grep/^$uname:$udom$/,@senders) {
5111: $match = 0;
5112: }
5113: }
5114: if ($match == 1) {
5115: $qresult.=$key.'='.$value.'&';
5116: }
5117: }
1.311 albertel 5118: if (&untie_domain_hash($hashref)) {
1.299 raeburn 5119: chop($qresult);
1.387 albertel 5120: &Reply($client, \$qresult, $userinput);
1.299 raeburn 5121: } else {
5122: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
5123: "while attempting dcmaildump\n", $userinput);
5124: }
5125: } else {
5126: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
5127: "while attempting dcmaildump\n", $userinput);
5128: }
5129: return 1;
5130: }
5131:
5132: ®ister_handler("dcmaildump", \&dump_dcmail_handler, 0, 1, 0);
5133:
5134: #
5135: # Puts domain roles in nohist_domainroles database
5136: #
5137: # Parameters
5138: # $cmd - Command keyword that caused us to be dispatched.
5139: # $tail - Tail of the command. Consists of a colon separated:
5140: # domain - the domain whose roles we are recording
5141: # role - Consists of key=value pair
5142: # where key is unique role
5143: # and value is start/end date information
5144: # $client - Socket open on the client.
5145: #
5146: # Returns:
5147: # 1 - indicating processing should continue.
5148: # Side effects
5149: # reply is written to $client.
5150: #
5151:
5152: sub put_domainroles_handler {
5153: my ($cmd,$tail,$client) = @_;
5154:
5155: my $userinput = "$cmd:$tail";
5156: my ($udom,$what)=split(/:/,$tail);
5157: chomp($what);
5158: my @pairs=split(/\&/,$what);
5159: my $hashref = &tie_domain_hash($udom, "nohist_domainroles", &GDBM_WRCREAT());
5160: if ($hashref) {
5161: foreach my $pair (@pairs) {
5162: my ($key,$value)=split(/=/,$pair);
5163: $hashref->{$key}=$value;
5164: }
1.311 albertel 5165: if (&untie_domain_hash($hashref)) {
1.299 raeburn 5166: &Reply($client, "ok\n", $userinput);
5167: } else {
5168: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
5169: "while attempting domroleput\n", $userinput);
5170: }
5171: } else {
5172: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
5173: "while attempting domroleput\n", $userinput);
5174: }
5175:
5176: return 1;
5177: }
5178:
5179: ®ister_handler("domroleput", \&put_domainroles_handler, 0, 1, 0);
5180:
5181: #
5182: # Retrieves domain roles from nohist_domainroles database
5183: # Returns to client an & separated list of key=value pairs,
5184: # where key is role and value is start and end date information.
5185: #
5186: # Parameters
5187: # $cmd - Command keyword that caused us to be dispatched.
5188: # $tail - Tail of the command. Consists of a colon separated:
5189: # domain - the domain whose domain roles table we dump
5190: # $client - Socket open on the client.
5191: #
5192: # Returns:
5193: # 1 - indicating processing should continue.
5194: # Side effects
5195: # reply (& separated list of role=start/end info pairs) is
5196: # written to $client.
5197: #
5198: sub dump_domainroles_handler {
5199: my ($cmd, $tail, $client) = @_;
5200:
5201: my $userinput = "$cmd:$tail";
5202: my ($udom,$startfilter,$endfilter,$rolesfilter) = split(/:/,$tail);
5203: chomp($rolesfilter);
5204: my @roles = ();
5205: if (defined($startfilter)) {
5206: $startfilter=&unescape($startfilter);
5207: } else {
5208: $startfilter='.';
5209: }
5210: if (defined($endfilter)) {
5211: $endfilter=&unescape($endfilter);
5212: } else {
5213: $endfilter='.';
5214: }
5215: if (defined($rolesfilter)) {
5216: $rolesfilter=&unescape($rolesfilter);
1.300 albertel 5217: @roles = split(/\&/,$rolesfilter);
1.299 raeburn 5218: }
1.421 raeburn 5219:
1.299 raeburn 5220: my $hashref = &tie_domain_hash($udom, "nohist_domainroles", &GDBM_WRCREAT());
5221: if ($hashref) {
5222: my $qresult = '';
5223: while (my ($key,$value) = each(%$hashref)) {
5224: my $match = 1;
1.421 raeburn 5225: my ($end,$start) = split(/:/,&unescape($value));
1.299 raeburn 5226: my ($trole,$uname,$udom,$runame,$rudom,$rsec) = split(/:/,&unescape($key));
1.421 raeburn 5227: unless (@roles < 1) {
5228: unless (grep/^\Q$trole\E$/,@roles) {
5229: $match = 0;
5230: next;
5231: }
5232: }
1.299 raeburn 5233: unless ($startfilter eq '.' || !defined($startfilter)) {
1.415 raeburn 5234: if ((defined($start)) && ($start >= $startfilter)) {
1.299 raeburn 5235: $match = 0;
1.421 raeburn 5236: next;
1.299 raeburn 5237: }
5238: }
5239: unless ($endfilter eq '.' || !defined($endfilter)) {
1.421 raeburn 5240: if ((defined($end)) && (($end > 0) && ($end <= $endfilter))) {
1.299 raeburn 5241: $match = 0;
1.421 raeburn 5242: next;
1.299 raeburn 5243: }
5244: }
5245: if ($match == 1) {
5246: $qresult.=$key.'='.$value.'&';
5247: }
5248: }
1.311 albertel 5249: if (&untie_domain_hash($hashref)) {
1.299 raeburn 5250: chop($qresult);
1.387 albertel 5251: &Reply($client, \$qresult, $userinput);
1.299 raeburn 5252: } else {
5253: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
5254: "while attempting domrolesdump\n", $userinput);
5255: }
5256: } else {
5257: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
5258: "while attempting domrolesdump\n", $userinput);
5259: }
5260: return 1;
5261: }
5262:
5263: ®ister_handler("domrolesdump", \&dump_domainroles_handler, 0, 1, 0);
5264:
5265:
1.238 foxr 5266: # Process the tmpput command I'm not sure what this does.. Seems to
5267: # create a file in the lonDaemons/tmp directory of the form $id.tmp
5268: # where Id is the client's ip concatenated with a sequence number.
5269: # The file will contain some value that is passed in. Is this e.g.
5270: # a login token?
5271: #
5272: # Parameters:
5273: # $cmd - The command that got us dispatched.
5274: # $tail - The remainder of the request following $cmd:
5275: # In this case this will be the contents of the file.
5276: # $client - Socket connected to the client.
5277: # Returns:
5278: # 1 indicating processing can continue.
5279: # Side effects:
5280: # A file is created in the local filesystem.
5281: # A reply is sent to the client.
5282: sub tmp_put_handler {
5283: my ($cmd, $what, $client) = @_;
5284:
5285: my $userinput = "$cmd:$what"; # Reconstruct for logging.
5286:
1.347 raeburn 5287: my ($record,$context) = split(/:/,$what);
5288: if ($context ne '') {
5289: chomp($context);
5290: $context = &unescape($context);
5291: }
5292: my ($id,$store);
1.238 foxr 5293: $tmpsnum++;
1.454 raeburn 5294: if (($context eq 'resetpw') || ($context eq 'createaccount')) {
1.347 raeburn 5295: $id = &md5_hex(&md5_hex(time.{}.rand().$$));
5296: } else {
5297: $id = $$.'_'.$clientip.'_'.$tmpsnum;
5298: }
1.238 foxr 5299: $id=~s/\W/\_/g;
1.347 raeburn 5300: $record=~s/\n//g;
1.238 foxr 5301: my $execdir=$perlvar{'lonDaemons'};
5302: if ($store=IO::File->new(">$execdir/tmp/$id.tmp")) {
1.347 raeburn 5303: print $store $record;
1.238 foxr 5304: close $store;
1.387 albertel 5305: &Reply($client, \$id, $userinput);
1.238 foxr 5306: } else {
5307: &Failure( $client, "error: ".($!+0)."IO::File->new Failed ".
5308: "while attempting tmpput\n", $userinput);
5309: }
5310: return 1;
5311:
5312: }
5313: ®ister_handler("tmpput", \&tmp_put_handler, 0, 1, 0);
1.263 albertel 5314:
1.238 foxr 5315: # Processes the tmpget command. This command returns the contents
5316: # of a temporary resource file(?) created via tmpput.
5317: #
5318: # Paramters:
5319: # $cmd - Command that got us dispatched.
5320: # $id - Tail of the command, contain the id of the resource
5321: # we want to fetch.
5322: # $client - socket open on the client.
5323: # Return:
5324: # 1 - Inidcating processing can continue.
5325: # Side effects:
5326: # A reply is sent to the client.
5327: #
5328: sub tmp_get_handler {
5329: my ($cmd, $id, $client) = @_;
5330:
5331: my $userinput = "$cmd:$id";
5332:
5333:
5334: $id=~s/\W/\_/g;
5335: my $store;
5336: my $execdir=$perlvar{'lonDaemons'};
5337: if ($store=IO::File->new("$execdir/tmp/$id.tmp")) {
5338: my $reply=<$store>;
1.387 albertel 5339: &Reply( $client, \$reply, $userinput);
1.238 foxr 5340: close $store;
5341: } else {
5342: &Failure( $client, "error: ".($!+0)."IO::File->new Failed ".
5343: "while attempting tmpget\n", $userinput);
5344: }
5345:
5346: return 1;
5347: }
5348: ®ister_handler("tmpget", \&tmp_get_handler, 0, 1, 0);
1.263 albertel 5349:
1.238 foxr 5350: #
5351: # Process the tmpdel command. This command deletes a temp resource
5352: # created by the tmpput command.
5353: #
5354: # Parameters:
5355: # $cmd - Command that got us here.
5356: # $id - Id of the temporary resource created.
5357: # $client - socket open on the client process.
5358: #
5359: # Returns:
5360: # 1 - Indicating processing should continue.
5361: # Side Effects:
5362: # A file is deleted
5363: # A reply is sent to the client.
5364: sub tmp_del_handler {
5365: my ($cmd, $id, $client) = @_;
5366:
5367: my $userinput= "$cmd:$id";
5368:
5369: chomp($id);
5370: $id=~s/\W/\_/g;
5371: my $execdir=$perlvar{'lonDaemons'};
5372: if (unlink("$execdir/tmp/$id.tmp")) {
5373: &Reply($client, "ok\n", $userinput);
5374: } else {
5375: &Failure( $client, "error: ".($!+0)."Unlink tmp Failed ".
5376: "while attempting tmpdel\n", $userinput);
5377: }
5378:
5379: return 1;
5380:
5381: }
5382: ®ister_handler("tmpdel", \&tmp_del_handler, 0, 1, 0);
1.263 albertel 5383:
1.238 foxr 5384: #
1.246 foxr 5385: # Processes the setannounce command. This command
5386: # creates a file named announce.txt in the top directory of
5387: # the documentn root and sets its contents. The announce.txt file is
5388: # printed in its entirety at the LonCAPA login page. Note:
5389: # once the announcement.txt fileis created it cannot be deleted.
5390: # However, setting the contents of the file to empty removes the
5391: # announcement from the login page of loncapa so who cares.
5392: #
5393: # Parameters:
5394: # $cmd - The command that got us dispatched.
5395: # $announcement - The text of the announcement.
5396: # $client - Socket open on the client process.
5397: # Retunrns:
5398: # 1 - Indicating request processing should continue
5399: # Side Effects:
5400: # The file {DocRoot}/announcement.txt is created.
5401: # A reply is sent to $client.
5402: #
5403: sub set_announce_handler {
5404: my ($cmd, $announcement, $client) = @_;
5405:
5406: my $userinput = "$cmd:$announcement";
5407:
5408: chomp($announcement);
5409: $announcement=&unescape($announcement);
5410: if (my $store=IO::File->new('>'.$perlvar{'lonDocRoot'}.
5411: '/announcement.txt')) {
5412: print $store $announcement;
5413: close $store;
5414: &Reply($client, "ok\n", $userinput);
5415: } else {
5416: &Failure($client, "error: ".($!+0)."\n", $userinput);
5417: }
5418:
5419: return 1;
5420: }
5421: ®ister_handler("setannounce", \&set_announce_handler, 0, 1, 0);
1.263 albertel 5422:
1.246 foxr 5423: #
5424: # Return the version of the daemon. This can be used to determine
5425: # the compatibility of cross version installations or, alternatively to
5426: # simply know who's out of date and who isn't. Note that the version
5427: # is returned concatenated with the tail.
5428: # Parameters:
5429: # $cmd - the request that dispatched to us.
5430: # $tail - Tail of the request (client's version?).
5431: # $client - Socket open on the client.
5432: #Returns:
5433: # 1 - continue processing requests.
5434: # Side Effects:
5435: # Replies with version to $client.
5436: sub get_version_handler {
5437: my ($cmd, $tail, $client) = @_;
5438:
5439: my $userinput = $cmd.$tail;
5440:
5441: &Reply($client, &version($userinput)."\n", $userinput);
5442:
5443:
5444: return 1;
5445: }
5446: ®ister_handler("version", \&get_version_handler, 0, 1, 0);
1.263 albertel 5447:
1.246 foxr 5448: # Set the current host and domain. This is used to support
5449: # multihomed systems. Each IP of the system, or even separate daemons
5450: # on the same IP can be treated as handling a separate lonCAPA virtual
5451: # machine. This command selects the virtual lonCAPA. The client always
5452: # knows the right one since it is lonc and it is selecting the domain/system
5453: # from the hosts.tab file.
5454: # Parameters:
5455: # $cmd - Command that dispatched us.
5456: # $tail - Tail of the command (domain/host requested).
5457: # $socket - Socket open on the client.
5458: #
5459: # Returns:
5460: # 1 - Indicates the program should continue to process requests.
5461: # Side-effects:
5462: # The default domain/system context is modified for this daemon.
5463: # a reply is sent to the client.
5464: #
5465: sub set_virtual_host_handler {
5466: my ($cmd, $tail, $socket) = @_;
5467:
5468: my $userinput ="$cmd:$tail";
5469:
5470: &Reply($client, &sethost($userinput)."\n", $userinput);
5471:
5472:
5473: return 1;
5474: }
1.247 albertel 5475: ®ister_handler("sethost", \&set_virtual_host_handler, 0, 1, 0);
1.246 foxr 5476:
5477: # Process a request to exit:
5478: # - "bye" is sent to the client.
5479: # - The client socket is shutdown and closed.
5480: # - We indicate to the caller that we should exit.
5481: # Formal Parameters:
5482: # $cmd - The command that got us here.
5483: # $tail - Tail of the command (empty).
5484: # $client - Socket open on the tail.
5485: # Returns:
5486: # 0 - Indicating the program should exit!!
5487: #
5488: sub exit_handler {
5489: my ($cmd, $tail, $client) = @_;
5490:
5491: my $userinput = "$cmd:$tail";
5492:
5493: &logthis("Client $clientip ($clientname) hanging up: $userinput");
5494: &Reply($client, "bye\n", $userinput);
5495: $client->shutdown(2); # shutdown the socket forcibly.
5496: $client->close();
5497:
5498: return 0;
5499: }
1.248 foxr 5500: ®ister_handler("exit", \&exit_handler, 0,1,1);
5501: ®ister_handler("init", \&exit_handler, 0,1,1);
5502: ®ister_handler("quit", \&exit_handler, 0,1,1);
5503:
5504: # Determine if auto-enrollment is enabled.
5505: # Note that the original had what I believe to be a defect.
5506: # The original returned 0 if the requestor was not a registerd client.
5507: # It should return "refused".
5508: # Formal Parameters:
5509: # $cmd - The command that invoked us.
5510: # $tail - The tail of the command (Extra command parameters.
5511: # $client - The socket open on the client that issued the request.
5512: # Returns:
5513: # 1 - Indicating processing should continue.
5514: #
5515: sub enrollment_enabled_handler {
5516: my ($cmd, $tail, $client) = @_;
5517: my $userinput = $cmd.":".$tail; # For logging purposes.
5518:
5519:
1.337 albertel 5520: my ($cdom) = split(/:/, $tail, 2); # Domain we're asking about.
5521:
1.248 foxr 5522: my $outcome = &localenroll::run($cdom);
1.387 albertel 5523: &Reply($client, \$outcome, $userinput);
1.248 foxr 5524:
5525: return 1;
5526: }
5527: ®ister_handler("autorun", \&enrollment_enabled_handler, 0, 1, 0);
5528:
1.417 raeburn 5529: #
1.423 raeburn 5530: # Validate an institutional code used for a LON-CAPA course.
1.417 raeburn 5531: #
5532: # Formal Parameters:
5533: # $cmd - The command request that got us dispatched.
5534: # $tail - The tail of the command. In this case,
5535: # this is a colon separated set of words that will be split
5536: # into:
1.424 raeburn 5537: # $dom - The domain for which the check of
5538: # institutional course code will occur.
5539: #
5540: # $instcode - The institutional code for the course
5541: # being requested, or validated for rights
5542: # to request.
5543: #
5544: # $owner - The course requestor (who will be the
5545: # course owner, in the form username:domain
5546: #
1.417 raeburn 5547: # $client - Socket open on the client.
5548: # Returns:
5549: # 1 - Indicating processing should continue.
5550: #
5551: sub validate_instcode_handler {
5552: my ($cmd, $tail, $client) = @_;
5553: my $userinput = "$cmd:$tail";
1.423 raeburn 5554: my ($dom,$instcode,$owner) = split(/:/, $tail);
1.422 raeburn 5555: $instcode = &unescape($instcode);
5556: $owner = &unescape($owner);
1.498 raeburn 5557: my ($outcome,$description,$credits) =
1.426 raeburn 5558: &localenroll::validate_instcode($dom,$instcode,$owner);
1.498 raeburn 5559: my $result = &escape($outcome).'&'.&escape($description).'&'.
5560: &escape($credits);
1.426 raeburn 5561: &Reply($client, \$result, $userinput);
1.417 raeburn 5562:
5563: return 1;
5564: }
5565: ®ister_handler("autovalidateinstcode", \&validate_instcode_handler, 0, 1, 0);
5566:
1.248 foxr 5567: # Get the official sections for which auto-enrollment is possible.
5568: # Since the admin people won't know about 'unofficial sections'
5569: # we cannot auto-enroll on them.
5570: # Formal Parameters:
5571: # $cmd - The command request that got us dispatched here.
5572: # $tail - The remainder of the request. In our case this
5573: # will be split into:
5574: # $coursecode - The course name from the admin point of view.
5575: # $cdom - The course's domain(?).
5576: # $client - Socket open on the client.
5577: # Returns:
5578: # 1 - Indiciting processing should continue.
5579: #
5580: sub get_sections_handler {
5581: my ($cmd, $tail, $client) = @_;
5582: my $userinput = "$cmd:$tail";
5583:
5584: my ($coursecode, $cdom) = split(/:/, $tail);
5585: my @secs = &localenroll::get_sections($coursecode,$cdom);
5586: my $seclist = &escape(join(':',@secs));
5587:
1.387 albertel 5588: &Reply($client, \$seclist, $userinput);
1.248 foxr 5589:
5590:
5591: return 1;
5592: }
5593: ®ister_handler("autogetsections", \&get_sections_handler, 0, 1, 0);
5594:
5595: # Validate the owner of a new course section.
5596: #
5597: # Formal Parameters:
5598: # $cmd - Command that got us dispatched.
5599: # $tail - the remainder of the command. For us this consists of a
5600: # colon separated string containing:
5601: # $inst - Course Id from the institutions point of view.
5602: # $owner - Proposed owner of the course.
5603: # $cdom - Domain of the course (from the institutions
5604: # point of view?)..
5605: # $client - Socket open on the client.
5606: #
5607: # Returns:
5608: # 1 - Processing should continue.
5609: #
5610: sub validate_course_owner_handler {
5611: my ($cmd, $tail, $client) = @_;
5612: my $userinput = "$cmd:$tail";
1.470 raeburn 5613: my ($inst_course_id, $owner, $cdom, $coowners) = split(/:/, $tail);
5614:
1.336 raeburn 5615: $owner = &unescape($owner);
1.470 raeburn 5616: $coowners = &unescape($coowners);
5617: my $outcome = &localenroll::new_course($inst_course_id,$owner,$cdom,$coowners);
1.387 albertel 5618: &Reply($client, \$outcome, $userinput);
1.248 foxr 5619:
5620:
5621:
5622: return 1;
5623: }
5624: ®ister_handler("autonewcourse", \&validate_course_owner_handler, 0, 1, 0);
1.263 albertel 5625:
1.248 foxr 5626: #
5627: # Validate a course section in the official schedule of classes
5628: # from the institutions point of view (part of autoenrollment).
5629: #
5630: # Formal Parameters:
5631: # $cmd - The command request that got us dispatched.
5632: # $tail - The tail of the command. In this case,
5633: # this is a colon separated set of words that will be split
5634: # into:
5635: # $inst_course_id - The course/section id from the
5636: # institutions point of view.
5637: # $cdom - The domain from the institutions
5638: # point of view.
5639: # $client - Socket open on the client.
5640: # Returns:
5641: # 1 - Indicating processing should continue.
5642: #
5643: sub validate_course_section_handler {
5644: my ($cmd, $tail, $client) = @_;
5645: my $userinput = "$cmd:$tail";
5646: my ($inst_course_id, $cdom) = split(/:/, $tail);
5647:
5648: my $outcome=&localenroll::validate_courseID($inst_course_id,$cdom);
1.387 albertel 5649: &Reply($client, \$outcome, $userinput);
1.248 foxr 5650:
5651:
5652: return 1;
5653: }
5654: ®ister_handler("autovalidatecourse", \&validate_course_section_handler, 0, 1, 0);
5655:
5656: #
1.340 raeburn 5657: # Validate course owner's access to enrollment data for specific class section.
5658: #
5659: #
5660: # Formal Parameters:
5661: # $cmd - The command request that got us dispatched.
5662: # $tail - The tail of the command. In this case this is a colon separated
5663: # set of words that will be split into:
5664: # $inst_class - Institutional code for the specific class section
5665: # $courseowner - The escaped username:domain of the course owner
5666: # $cdom - The domain of the course from the institution's
5667: # point of view.
5668: # $client - The socket open on the client.
5669: # Returns:
5670: # 1 - continue processing.
5671: #
5672:
5673: sub validate_class_access_handler {
5674: my ($cmd, $tail, $client) = @_;
5675: my $userinput = "$cmd:$tail";
1.383 raeburn 5676: my ($inst_class,$ownerlist,$cdom) = split(/:/, $tail);
1.392 raeburn 5677: my $owners = &unescape($ownerlist);
1.341 albertel 5678: my $outcome;
5679: eval {
5680: local($SIG{__DIE__})='DEFAULT';
1.392 raeburn 5681: $outcome=&localenroll::check_section($inst_class,$owners,$cdom);
1.341 albertel 5682: };
1.387 albertel 5683: &Reply($client,\$outcome, $userinput);
1.340 raeburn 5684:
5685: return 1;
5686: }
5687: ®ister_handler("autovalidateclass_sec", \&validate_class_access_handler, 0, 1, 0);
5688:
5689: #
5690: # Create a password for a new LON-CAPA user added by auto-enrollment.
5691: # Only used for case where authentication method for new user is localauth
1.248 foxr 5692: #
5693: # Formal Parameters:
5694: # $cmd - The command request that got us dispatched.
5695: # $tail - The tail of the command. In this case this is a colon separated
5696: # set of words that will be split into:
1.340 raeburn 5697: # $authparam - An authentication parameter (localauth parameter).
1.248 foxr 5698: # $cdom - The domain of the course from the institution's
5699: # point of view.
5700: # $client - The socket open on the client.
5701: # Returns:
5702: # 1 - continue processing.
5703: #
5704: sub create_auto_enroll_password_handler {
5705: my ($cmd, $tail, $client) = @_;
5706: my $userinput = "$cmd:$tail";
5707:
5708: my ($authparam, $cdom) = split(/:/, $userinput);
5709:
5710: my ($create_passwd,$authchk);
5711: ($authparam,
5712: $create_passwd,
5713: $authchk) = &localenroll::create_password($authparam,$cdom);
5714:
5715: &Reply($client, &escape($authparam.':'.$create_passwd.':'.$authchk)."\n",
5716: $userinput);
5717:
5718:
5719: return 1;
5720: }
5721: ®ister_handler("autocreatepassword", \&create_auto_enroll_password_handler,
5722: 0, 1, 0);
5723:
1.522 raeburn 5724: sub auto_export_grades_handler {
5725: my ($cmd, $tail, $client) = @_;
5726: my $userinput = "$cmd:$tail";
5727: my ($cdom,$cnum,$info,$data) = split(/:/,$tail);
5728: my $inforef = &Apache::lonnet::thaw_unescape($info);
5729: my $dataref = &Apache::lonnet::thaw_unescape($data);
5730: my ($outcome,$result);;
5731: eval {
5732: local($SIG{__DIE__})='DEFAULT';
5733: my %rtnhash;
5734: $outcome=&localenroll::export_grades($cdom,$cnum,$inforef,$dataref,\%rtnhash);
5735: if ($outcome eq 'ok') {
5736: foreach my $key (keys(%rtnhash)) {
5737: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($rtnhash{$key}).'&';
5738: }
5739: $result =~ s/\&$//;
5740: }
5741: };
5742: if (!$@) {
5743: if ($outcome eq 'ok') {
5744: if ($cipher) {
5745: my $cmdlength=length($result);
5746: $result.=" ";
5747: my $encresult='';
5748: for (my $encidx=0;$encidx<=$cmdlength;$encidx+=8) {
5749: $encresult.= unpack("H16",
5750: $cipher->encrypt(substr($result,
5751: $encidx,
5752: 8)));
5753: }
5754: &Reply( $client, "enc:$cmdlength:$encresult\n", $userinput);
5755: } else {
5756: &Failure( $client, "error:no_key\n", $userinput);
5757: }
5758: } else {
5759: &Reply($client, "$outcome\n", $userinput);
5760: }
5761: } else {
5762: &Failure($client,"export_error\n",$userinput);
5763: }
5764: return 1;
5765: }
5766: ®ister_handler("autoexportgrades", \&auto_export_grades_handler,
5767: 0, 1, 0);
5768:
1.248 foxr 5769: # Retrieve and remove temporary files created by/during autoenrollment.
5770: #
5771: # Formal Parameters:
5772: # $cmd - The command that got us dispatched.
5773: # $tail - The tail of the command. In our case this is a colon
5774: # separated list that will be split into:
1.526 raeburn 5775: # $filename - The name of the file to retrieve.
1.248 foxr 5776: # The filename is given as a path relative to
5777: # the LonCAPA temp file directory.
5778: # $client - Socket open on the client.
5779: #
5780: # Returns:
5781: # 1 - Continue processing.
5782: sub retrieve_auto_file_handler {
5783: my ($cmd, $tail, $client) = @_;
5784: my $userinput = "cmd:$tail";
5785:
5786: my ($filename) = split(/:/, $tail);
5787:
5788: my $source = $perlvar{'lonDaemons'}.'/tmp/'.$filename;
1.521 raeburn 5789:
5790: if ($filename =~m{/\.\./}) {
5791: &Failure($client, "refused\n", $userinput);
1.526 raeburn 5792: } elsif ($filename !~ /^$LONCAPA::match_domain\_$LONCAPA::match_courseid\_.+_classlist\.xml$/) {
5793: &Failure($client, "refused\n", $userinput);
1.521 raeburn 5794: } elsif ( (-e $source) && ($filename ne '') ) {
1.248 foxr 5795: my $reply = '';
5796: if (open(my $fh,$source)) {
5797: while (<$fh>) {
5798: chomp($_);
5799: $_ =~ s/^\s+//g;
5800: $_ =~ s/\s+$//g;
5801: $reply .= $_;
5802: }
5803: close($fh);
5804: &Reply($client, &escape($reply)."\n", $userinput);
5805:
5806: # Does this have to be uncommented??!? (RF).
5807: #
5808: # unlink($source);
5809: } else {
5810: &Failure($client, "error\n", $userinput);
5811: }
5812: } else {
5813: &Failure($client, "error\n", $userinput);
5814: }
5815:
5816:
5817: return 1;
5818: }
5819: ®ister_handler("autoretrieve", \&retrieve_auto_file_handler, 0,1,0);
5820:
1.423 raeburn 5821: sub crsreq_checks_handler {
5822: my ($cmd, $tail, $client) = @_;
5823: my $userinput = "$cmd:$tail";
5824: my $dom = $tail;
5825: my $result;
1.519 raeburn 5826: my @reqtypes = ('official','unofficial','community','textbook','placement');
1.423 raeburn 5827: eval {
5828: local($SIG{__DIE__})='DEFAULT';
5829: my %validations;
1.424 raeburn 5830: my $response = &localenroll::crsreq_checks($dom,\@reqtypes,
5831: \%validations);
1.423 raeburn 5832: if ($response eq 'ok') {
5833: foreach my $key (keys(%validations)) {
5834: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($validations{$key}).'&';
5835: }
5836: $result =~ s/\&$//;
5837: } else {
5838: $result = 'error';
5839: }
5840: };
5841: if (!$@) {
5842: &Reply($client, \$result, $userinput);
5843: } else {
5844: &Failure($client,"unknown_cmd\n",$userinput);
5845: }
5846: return 1;
5847: }
5848: ®ister_handler("autocrsreqchecks", \&crsreq_checks_handler, 0, 1, 0);
5849:
5850: sub validate_crsreq_handler {
5851: my ($cmd, $tail, $client) = @_;
5852: my $userinput = "$cmd:$tail";
1.508 raeburn 5853: my ($dom,$owner,$crstype,$inststatuslist,$instcode,$instseclist,$customdata) = split(/:/, $tail);
1.423 raeburn 5854: $instcode = &unescape($instcode);
5855: $owner = &unescape($owner);
5856: $crstype = &unescape($crstype);
5857: $inststatuslist = &unescape($inststatuslist);
5858: $instcode = &unescape($instcode);
5859: $instseclist = &unescape($instseclist);
1.508 raeburn 5860: my $custominfo = &Apache::lonnet::thaw_unescape($customdata);
1.423 raeburn 5861: my $outcome;
5862: eval {
5863: local($SIG{__DIE__})='DEFAULT';
5864: $outcome = &localenroll::validate_crsreq($dom,$owner,$crstype,
5865: $inststatuslist,$instcode,
1.508 raeburn 5866: $instseclist,$custominfo);
1.423 raeburn 5867: };
5868: if (!$@) {
5869: &Reply($client, \$outcome, $userinput);
5870: } else {
5871: &Failure($client,"unknown_cmd\n",$userinput);
5872: }
5873: return 1;
5874: }
5875: ®ister_handler("autocrsreqvalidation", \&validate_crsreq_handler, 0, 1, 0);
5876:
1.506 raeburn 5877: sub crsreq_update_handler {
5878: my ($cmd, $tail, $client) = @_;
5879: my $userinput = "$cmd:$tail";
1.509 raeburn 5880: my ($cdom,$cnum,$crstype,$action,$ownername,$ownerdomain,$fullname,$title,$code,
5881: $accessstart,$accessend,$infohashref) =
1.506 raeburn 5882: split(/:/, $tail);
5883: $crstype = &unescape($crstype);
5884: $action = &unescape($action);
5885: $ownername = &unescape($ownername);
5886: $ownerdomain = &unescape($ownerdomain);
5887: $fullname = &unescape($fullname);
5888: $title = &unescape($title);
5889: $code = &unescape($code);
1.509 raeburn 5890: $accessstart = &unescape($accessstart);
5891: $accessend = &unescape($accessend);
1.506 raeburn 5892: my $incoming = &Apache::lonnet::thaw_unescape($infohashref);
5893: my ($result,$outcome);
5894: eval {
5895: local($SIG{__DIE__})='DEFAULT';
5896: my %rtnhash;
5897: $outcome = &localenroll::crsreq_updates($cdom,$cnum,$crstype,$action,
5898: $ownername,$ownerdomain,$fullname,
1.509 raeburn 5899: $title,$code,$accessstart,$accessend,
5900: $incoming,\%rtnhash);
1.506 raeburn 5901: if ($outcome eq 'ok') {
1.515 raeburn 5902: my @posskeys = qw(createdweb createdmsg createdcustomized createdactions queuedweb queuedmsg formitems reviewweb validationjs onload javascript);
1.506 raeburn 5903: foreach my $key (keys(%rtnhash)) {
5904: if (grep(/^\Q$key\E/,@posskeys)) {
5905: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($rtnhash{$key}).'&';
5906: }
5907: }
5908: $result =~ s/\&$//;
5909: }
5910: };
5911: if (!$@) {
5912: if ($outcome eq 'ok') {
5913: &Reply($client, \$result, $userinput);
5914: } else {
5915: &Reply($client, "format_error\n", $userinput);
5916: }
5917: } else {
5918: &Failure($client,"unknown_cmd\n",$userinput);
5919: }
5920: return 1;
5921: }
5922: ®ister_handler("autocrsrequpdate", \&crsreq_update_handler, 0, 1, 0);
5923:
1.248 foxr 5924: #
5925: # Read and retrieve institutional code format (for support form).
5926: # Formal Parameters:
5927: # $cmd - Command that dispatched us.
5928: # $tail - Tail of the command. In this case it conatins
5929: # the course domain and the coursename.
5930: # $client - Socket open on the client.
5931: # Returns:
5932: # 1 - Continue processing.
5933: #
5934: sub get_institutional_code_format_handler {
5935: my ($cmd, $tail, $client) = @_;
5936: my $userinput = "$cmd:$tail";
5937:
5938: my $reply;
5939: my($cdom,$course) = split(/:/,$tail);
5940: my @pairs = split/\&/,$course;
5941: my %instcodes = ();
5942: my %codes = ();
5943: my @codetitles = ();
5944: my %cat_titles = ();
5945: my %cat_order = ();
5946: foreach (@pairs) {
5947: my ($key,$value) = split/=/,$_;
5948: $instcodes{&unescape($key)} = &unescape($value);
5949: }
5950: my $formatreply = &localenroll::instcode_format($cdom,
5951: \%instcodes,
5952: \%codes,
5953: \@codetitles,
5954: \%cat_titles,
5955: \%cat_order);
5956: if ($formatreply eq 'ok') {
1.365 albertel 5957: my $codes_str = &Apache::lonnet::hash2str(%codes);
5958: my $codetitles_str = &Apache::lonnet::array2str(@codetitles);
5959: my $cat_titles_str = &Apache::lonnet::hash2str(%cat_titles);
5960: my $cat_order_str = &Apache::lonnet::hash2str(%cat_order);
1.248 foxr 5961: &Reply($client,
5962: $codes_str.':'.$codetitles_str.':'.$cat_titles_str.':'
5963: .$cat_order_str."\n",
5964: $userinput);
5965: } else {
5966: # this else branch added by RF since if not ok, lonc will
5967: # hang waiting on reply until timeout.
5968: #
5969: &Reply($client, "format_error\n", $userinput);
5970: }
5971:
5972: return 1;
5973: }
1.265 albertel 5974: ®ister_handler("autoinstcodeformat",
5975: \&get_institutional_code_format_handler,0,1,0);
1.246 foxr 5976:
1.345 raeburn 5977: sub get_institutional_defaults_handler {
5978: my ($cmd, $tail, $client) = @_;
5979: my $userinput = "$cmd:$tail";
5980:
5981: my $dom = $tail;
5982: my %defaults_hash;
5983: my @code_order;
5984: my $outcome;
5985: eval {
5986: local($SIG{__DIE__})='DEFAULT';
5987: $outcome = &localenroll::instcode_defaults($dom,\%defaults_hash,
5988: \@code_order);
5989: };
5990: if (!$@) {
5991: if ($outcome eq 'ok') {
5992: my $result='';
5993: while (my ($key,$value) = each(%defaults_hash)) {
5994: $result.=&escape($key).'='.&escape($value).'&';
5995: }
5996: $result .= 'code_order='.&escape(join('&',@code_order));
1.387 albertel 5997: &Reply($client,\$result,$userinput);
1.345 raeburn 5998: } else {
5999: &Reply($client,"error\n", $userinput);
6000: }
6001: } else {
6002: &Failure($client,"unknown_cmd\n",$userinput);
6003: }
6004: }
6005: ®ister_handler("autoinstcodedefaults",
6006: \&get_institutional_defaults_handler,0,1,0);
6007:
1.416 raeburn 6008: sub get_possible_instcodes_handler {
6009: my ($cmd, $tail, $client) = @_;
6010: my $userinput = "$cmd:$tail";
6011:
6012: my $reply;
6013: my $cdom = $tail;
1.417 raeburn 6014: my (@codetitles,%cat_titles,%cat_order,@code_order);
1.416 raeburn 6015: my $formatreply = &localenroll::possible_instcodes($cdom,
6016: \@codetitles,
6017: \%cat_titles,
1.417 raeburn 6018: \%cat_order,
6019: \@code_order);
1.416 raeburn 6020: if ($formatreply eq 'ok') {
6021: my $result = join('&',map {&escape($_);} (@codetitles)).':';
1.417 raeburn 6022: $result .= join('&',map {&escape($_);} (@code_order)).':';
1.416 raeburn 6023: foreach my $key (keys(%cat_titles)) {
6024: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($cat_titles{$key}).'&';
6025: }
6026: $result =~ s/\&$//;
6027: $result .= ':';
6028: foreach my $key (keys(%cat_order)) {
6029: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($cat_order{$key}).'&';
6030: }
6031: $result =~ s/\&$//;
6032: &Reply($client,\$result,$userinput);
6033: } else {
6034: &Reply($client, "format_error\n", $userinput);
6035: }
6036: return 1;
6037: }
6038: ®ister_handler("autopossibleinstcodes",
6039: \&get_possible_instcodes_handler,0,1,0);
6040:
1.381 raeburn 6041: sub get_institutional_user_rules {
6042: my ($cmd, $tail, $client) = @_;
6043: my $userinput = "$cmd:$tail";
6044: my $dom = &unescape($tail);
6045: my (%rules_hash,@rules_order);
6046: my $outcome;
6047: eval {
6048: local($SIG{__DIE__})='DEFAULT';
6049: $outcome = &localenroll::username_rules($dom,\%rules_hash,\@rules_order);
6050: };
6051: if (!$@) {
6052: if ($outcome eq 'ok') {
6053: my $result;
6054: foreach my $key (keys(%rules_hash)) {
6055: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($rules_hash{$key}).'&';
6056: }
6057: $result =~ s/\&$//;
6058: $result .= ':';
6059: if (@rules_order > 0) {
6060: foreach my $item (@rules_order) {
6061: $result .= &escape($item).'&';
6062: }
6063: }
6064: $result =~ s/\&$//;
1.387 albertel 6065: &Reply($client,\$result,$userinput);
1.381 raeburn 6066: } else {
6067: &Reply($client,"error\n", $userinput);
6068: }
6069: } else {
6070: &Failure($client,"unknown_cmd\n",$userinput);
6071: }
6072: }
6073: ®ister_handler("instuserrules",\&get_institutional_user_rules,0,1,0);
6074:
1.389 raeburn 6075: sub get_institutional_id_rules {
6076: my ($cmd, $tail, $client) = @_;
6077: my $userinput = "$cmd:$tail";
6078: my $dom = &unescape($tail);
6079: my (%rules_hash,@rules_order);
6080: my $outcome;
6081: eval {
6082: local($SIG{__DIE__})='DEFAULT';
6083: $outcome = &localenroll::id_rules($dom,\%rules_hash,\@rules_order);
6084: };
6085: if (!$@) {
6086: if ($outcome eq 'ok') {
6087: my $result;
6088: foreach my $key (keys(%rules_hash)) {
6089: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($rules_hash{$key}).'&';
6090: }
6091: $result =~ s/\&$//;
6092: $result .= ':';
6093: if (@rules_order > 0) {
6094: foreach my $item (@rules_order) {
6095: $result .= &escape($item).'&';
6096: }
6097: }
6098: $result =~ s/\&$//;
6099: &Reply($client,\$result,$userinput);
6100: } else {
6101: &Reply($client,"error\n", $userinput);
6102: }
6103: } else {
6104: &Failure($client,"unknown_cmd\n",$userinput);
6105: }
6106: }
6107: ®ister_handler("instidrules",\&get_institutional_id_rules,0,1,0);
6108:
1.397 raeburn 6109: sub get_institutional_selfcreate_rules {
1.396 raeburn 6110: my ($cmd, $tail, $client) = @_;
6111: my $userinput = "$cmd:$tail";
6112: my $dom = &unescape($tail);
6113: my (%rules_hash,@rules_order);
6114: my $outcome;
6115: eval {
6116: local($SIG{__DIE__})='DEFAULT';
1.397 raeburn 6117: $outcome = &localenroll::selfcreate_rules($dom,\%rules_hash,\@rules_order);
1.396 raeburn 6118: };
6119: if (!$@) {
6120: if ($outcome eq 'ok') {
6121: my $result;
6122: foreach my $key (keys(%rules_hash)) {
6123: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($rules_hash{$key}).'&';
6124: }
6125: $result =~ s/\&$//;
6126: $result .= ':';
6127: if (@rules_order > 0) {
6128: foreach my $item (@rules_order) {
6129: $result .= &escape($item).'&';
6130: }
6131: }
6132: $result =~ s/\&$//;
6133: &Reply($client,\$result,$userinput);
6134: } else {
6135: &Reply($client,"error\n", $userinput);
6136: }
6137: } else {
6138: &Failure($client,"unknown_cmd\n",$userinput);
6139: }
6140: }
1.397 raeburn 6141: ®ister_handler("instemailrules",\&get_institutional_selfcreate_rules,0,1,0);
1.396 raeburn 6142:
1.381 raeburn 6143:
6144: sub institutional_username_check {
6145: my ($cmd, $tail, $client) = @_;
6146: my $userinput = "$cmd:$tail";
6147: my %rulecheck;
6148: my $outcome;
6149: my ($udom,$uname,@rules) = split(/:/,$tail);
6150: $udom = &unescape($udom);
6151: $uname = &unescape($uname);
6152: @rules = map {&unescape($_);} (@rules);
6153: eval {
6154: local($SIG{__DIE__})='DEFAULT';
6155: $outcome = &localenroll::username_check($udom,$uname,\@rules,\%rulecheck);
6156: };
6157: if (!$@) {
6158: if ($outcome eq 'ok') {
6159: my $result='';
6160: foreach my $key (keys(%rulecheck)) {
6161: $result.=&escape($key).'='.&Apache::lonnet::freeze_escape($rulecheck{$key}).'&';
6162: }
1.387 albertel 6163: &Reply($client,\$result,$userinput);
1.381 raeburn 6164: } else {
6165: &Reply($client,"error\n", $userinput);
6166: }
6167: } else {
6168: &Failure($client,"unknown_cmd\n",$userinput);
6169: }
6170: }
6171: ®ister_handler("instrulecheck",\&institutional_username_check,0,1,0);
6172:
1.389 raeburn 6173: sub institutional_id_check {
6174: my ($cmd, $tail, $client) = @_;
6175: my $userinput = "$cmd:$tail";
6176: my %rulecheck;
6177: my $outcome;
6178: my ($udom,$id,@rules) = split(/:/,$tail);
6179: $udom = &unescape($udom);
6180: $id = &unescape($id);
6181: @rules = map {&unescape($_);} (@rules);
6182: eval {
6183: local($SIG{__DIE__})='DEFAULT';
6184: $outcome = &localenroll::id_check($udom,$id,\@rules,\%rulecheck);
6185: };
6186: if (!$@) {
6187: if ($outcome eq 'ok') {
6188: my $result='';
6189: foreach my $key (keys(%rulecheck)) {
6190: $result.=&escape($key).'='.&Apache::lonnet::freeze_escape($rulecheck{$key}).'&';
6191: }
6192: &Reply($client,\$result,$userinput);
6193: } else {
6194: &Reply($client,"error\n", $userinput);
6195: }
6196: } else {
6197: &Failure($client,"unknown_cmd\n",$userinput);
6198: }
6199: }
6200: ®ister_handler("instidrulecheck",\&institutional_id_check,0,1,0);
1.345 raeburn 6201:
1.397 raeburn 6202: sub institutional_selfcreate_check {
1.396 raeburn 6203: my ($cmd, $tail, $client) = @_;
6204: my $userinput = "$cmd:$tail";
6205: my %rulecheck;
6206: my $outcome;
6207: my ($udom,$email,@rules) = split(/:/,$tail);
6208: $udom = &unescape($udom);
6209: $email = &unescape($email);
6210: @rules = map {&unescape($_);} (@rules);
6211: eval {
6212: local($SIG{__DIE__})='DEFAULT';
1.397 raeburn 6213: $outcome = &localenroll::selfcreate_check($udom,$email,\@rules,\%rulecheck);
1.396 raeburn 6214: };
6215: if (!$@) {
6216: if ($outcome eq 'ok') {
6217: my $result='';
6218: foreach my $key (keys(%rulecheck)) {
6219: $result.=&escape($key).'='.&Apache::lonnet::freeze_escape($rulecheck{$key}).'&';
6220: }
6221: &Reply($client,\$result,$userinput);
6222: } else {
6223: &Reply($client,"error\n", $userinput);
6224: }
6225: } else {
6226: &Failure($client,"unknown_cmd\n",$userinput);
6227: }
6228: }
1.397 raeburn 6229: ®ister_handler("instselfcreatecheck",\&institutional_selfcreate_check,0,1,0);
1.396 raeburn 6230:
1.317 raeburn 6231: # Get domain specific conditions for import of student photographs to a course
6232: #
6233: # Retrieves information from photo_permission subroutine in localenroll.
6234: # Returns outcome (ok) if no processing errors, and whether course owner is
6235: # required to accept conditions of use (yes/no).
6236: #
6237: #
6238: sub photo_permission_handler {
6239: my ($cmd, $tail, $client) = @_;
6240: my $userinput = "$cmd:$tail";
6241: my $cdom = $tail;
6242: my ($perm_reqd,$conditions);
1.320 albertel 6243: my $outcome;
6244: eval {
6245: local($SIG{__DIE__})='DEFAULT';
6246: $outcome = &localenroll::photo_permission($cdom,\$perm_reqd,
6247: \$conditions);
6248: };
6249: if (!$@) {
6250: &Reply($client, &escape($outcome.':'.$perm_reqd.':'. $conditions)."\n",
6251: $userinput);
6252: } else {
6253: &Failure($client,"unknown_cmd\n",$userinput);
6254: }
6255: return 1;
1.317 raeburn 6256: }
6257: ®ister_handler("autophotopermission",\&photo_permission_handler,0,1,0);
6258:
6259: #
6260: # Checks if student photo is available for a user in the domain, in the user's
6261: # directory (in /userfiles/internal/studentphoto.jpg).
6262: # Uses localstudentphoto:fetch() to ensure there is an up to date copy of
6263: # the student's photo.
6264:
6265: sub photo_check_handler {
6266: my ($cmd, $tail, $client) = @_;
6267: my $userinput = "$cmd:$tail";
6268: my ($udom,$uname,$pid) = split(/:/,$tail);
6269: $udom = &unescape($udom);
6270: $uname = &unescape($uname);
6271: $pid = &unescape($pid);
6272: my $path=&propath($udom,$uname).'/userfiles/internal/';
6273: if (!-e $path) {
6274: &mkpath($path);
6275: }
6276: my $response;
6277: my $result = &localstudentphoto::fetch($udom,$uname,$pid,\$response);
6278: $result .= ':'.$response;
6279: &Reply($client, &escape($result)."\n",$userinput);
1.320 albertel 6280: return 1;
1.317 raeburn 6281: }
6282: ®ister_handler("autophotocheck",\&photo_check_handler,0,1,0);
6283:
6284: #
6285: # Retrieve information from localenroll about whether to provide a button
6286: # for users who have enbled import of student photos to initiate an
6287: # update of photo files for registered students. Also include
6288: # comment to display alongside button.
6289:
6290: sub photo_choice_handler {
6291: my ($cmd, $tail, $client) = @_;
6292: my $userinput = "$cmd:$tail";
6293: my $cdom = &unescape($tail);
1.320 albertel 6294: my ($update,$comment);
6295: eval {
6296: local($SIG{__DIE__})='DEFAULT';
6297: ($update,$comment) = &localenroll::manager_photo_update($cdom);
6298: };
6299: if (!$@) {
6300: &Reply($client,&escape($update).':'.&escape($comment)."\n",$userinput);
6301: } else {
6302: &Failure($client,"unknown_cmd\n",$userinput);
6303: }
6304: return 1;
1.317 raeburn 6305: }
6306: ®ister_handler("autophotochoice",\&photo_choice_handler,0,1,0);
6307:
1.265 albertel 6308: #
6309: # Gets a student's photo to exist (in the correct image type) in the user's
6310: # directory.
6311: # Formal Parameters:
6312: # $cmd - The command request that got us dispatched.
6313: # $tail - A colon separated set of words that will be split into:
6314: # $domain - student's domain
6315: # $uname - student username
6316: # $type - image type desired
6317: # $client - The socket open on the client.
6318: # Returns:
6319: # 1 - continue processing.
1.317 raeburn 6320:
1.265 albertel 6321: sub student_photo_handler {
6322: my ($cmd, $tail, $client) = @_;
1.317 raeburn 6323: my ($domain,$uname,$ext,$type) = split(/:/, $tail);
1.265 albertel 6324:
1.317 raeburn 6325: my $path=&propath($domain,$uname). '/userfiles/internal/';
6326: my $filename = 'studentphoto.'.$ext;
6327: if ($type eq 'thumbnail') {
6328: $filename = 'studentphoto_tn.'.$ext;
6329: }
6330: if (-e $path.$filename) {
1.265 albertel 6331: &Reply($client,"ok\n","$cmd:$tail");
6332: return 1;
6333: }
6334: &mkpath($path);
1.317 raeburn 6335: my $file;
6336: if ($type eq 'thumbnail') {
1.320 albertel 6337: eval {
6338: local($SIG{__DIE__})='DEFAULT';
6339: $file=&localstudentphoto::fetch_thumbnail($domain,$uname);
6340: };
1.317 raeburn 6341: } else {
6342: $file=&localstudentphoto::fetch($domain,$uname);
6343: }
1.265 albertel 6344: if (!$file) {
6345: &Failure($client,"unavailable\n","$cmd:$tail");
6346: return 1;
6347: }
1.317 raeburn 6348: if (!-e $path.$filename) { &convert_photo($file,$path.$filename); }
6349: if (-e $path.$filename) {
1.265 albertel 6350: &Reply($client,"ok\n","$cmd:$tail");
6351: return 1;
6352: }
6353: &Failure($client,"unable_to_convert\n","$cmd:$tail");
6354: return 1;
6355: }
6356: ®ister_handler("studentphoto", \&student_photo_handler, 0, 1, 0);
1.246 foxr 6357:
1.361 raeburn 6358: sub inst_usertypes_handler {
6359: my ($cmd, $domain, $client) = @_;
6360: my $res;
6361: my $userinput = $cmd.":".$domain; # For logging purposes.
1.370 albertel 6362: my (%typeshash,@order,$result);
6363: eval {
6364: local($SIG{__DIE__})='DEFAULT';
6365: $result=&localenroll::inst_usertypes($domain,\%typeshash,\@order);
6366: };
6367: if ($result eq 'ok') {
1.361 raeburn 6368: if (keys(%typeshash) > 0) {
6369: foreach my $key (keys(%typeshash)) {
6370: $res.=&escape($key).'='.&escape($typeshash{$key}).'&';
6371: }
6372: }
6373: $res=~s/\&$//;
6374: $res .= ':';
6375: if (@order > 0) {
6376: foreach my $item (@order) {
6377: $res .= &escape($item).'&';
6378: }
6379: }
6380: $res=~s/\&$//;
6381: }
1.387 albertel 6382: &Reply($client, \$res, $userinput);
1.361 raeburn 6383: return 1;
6384: }
6385: ®ister_handler("inst_usertypes", \&inst_usertypes_handler, 0, 1, 0);
6386:
1.264 albertel 6387: # mkpath makes all directories for a file, expects an absolute path with a
6388: # file or a trailing / if just a dir is passed
6389: # returns 1 on success 0 on failure
6390: sub mkpath {
6391: my ($file)=@_;
6392: my @parts=split(/\//,$file,-1);
6393: my $now=$parts[0].'/'.$parts[1].'/'.$parts[2];
6394: for (my $i=3;$i<= ($#parts-1);$i++) {
1.265 albertel 6395: $now.='/'.$parts[$i];
1.264 albertel 6396: if (!-e $now) {
6397: if (!mkdir($now,0770)) { return 0; }
6398: }
6399: }
6400: return 1;
6401: }
6402:
1.207 foxr 6403: #---------------------------------------------------------------
6404: #
6405: # Getting, decoding and dispatching requests:
6406: #
6407: #
6408: # Get a Request:
6409: # Gets a Request message from the client. The transaction
6410: # is defined as a 'line' of text. We remove the new line
6411: # from the text line.
1.226 foxr 6412: #
1.211 albertel 6413: sub get_request {
1.207 foxr 6414: my $input = <$client>;
6415: chomp($input);
1.226 foxr 6416:
1.234 foxr 6417: &Debug("get_request: Request = $input\n");
1.207 foxr 6418:
6419: &status('Processing '.$clientname.':'.$input);
6420:
6421: return $input;
6422: }
1.212 foxr 6423: #---------------------------------------------------------------
6424: #
6425: # Process a request. This sub should shrink as each action
6426: # gets farmed out into a separat sub that is registered
6427: # with the dispatch hash.
6428: #
6429: # Parameters:
6430: # user_input - The request received from the client (lonc).
1.525 raeburn 6431: #
1.212 foxr 6432: # Returns:
6433: # true to keep processing, false if caller should exit.
6434: #
6435: sub process_request {
1.525 raeburn 6436: my ($userinput) = @_; # Easier for now to break style than to
6437: # fix all the userinput -> user_input.
1.212 foxr 6438: my $wasenc = 0; # True if request was encrypted.
6439: # ------------------------------------------------------------ See if encrypted
1.322 albertel 6440: # for command
6441: # sethost:<server>
6442: # <command>:<args>
6443: # we just send it to the processor
6444: # for
6445: # sethost:<server>:<command>:<args>
6446: # we do the implict set host and then do the command
6447: if ($userinput =~ /^sethost:/) {
6448: (my $cmd,my $newid,$userinput) = split(':',$userinput,3);
6449: if (defined($userinput)) {
6450: &sethost("$cmd:$newid");
6451: } else {
6452: $userinput = "$cmd:$newid";
6453: }
6454: }
6455:
1.212 foxr 6456: if ($userinput =~ /^enc/) {
6457: $userinput = decipher($userinput);
6458: $wasenc=1;
6459: if(!$userinput) { # Cipher not defined.
1.251 foxr 6460: &Failure($client, "error: Encrypted data without negotated key\n");
1.212 foxr 6461: return 0;
6462: }
6463: }
6464: Debug("process_request: $userinput\n");
6465:
1.213 foxr 6466: #
6467: # The 'correct way' to add a command to lond is now to
6468: # write a sub to execute it and Add it to the command dispatch
6469: # hash via a call to register_handler.. The comments to that
6470: # sub should give you enough to go on to show how to do this
6471: # along with the examples that are building up as this code
6472: # is getting refactored. Until all branches of the
6473: # if/elseif monster below have been factored out into
6474: # separate procesor subs, if the dispatch hash is missing
6475: # the command keyword, we will fall through to the remainder
6476: # of the if/else chain below in order to keep this thing in
6477: # working order throughout the transmogrification.
6478:
6479: my ($command, $tail) = split(/:/, $userinput, 2);
6480: chomp($command);
6481: chomp($tail);
6482: $tail =~ s/(\r)//; # This helps people debugging with e.g. telnet.
1.214 foxr 6483: $command =~ s/(\r)//; # And this too for parameterless commands.
6484: if(!$tail) {
6485: $tail =""; # defined but blank.
6486: }
1.213 foxr 6487:
6488: &Debug("Command received: $command, encoded = $wasenc");
6489:
6490: if(defined $Dispatcher{$command}) {
6491:
6492: my $dispatch_info = $Dispatcher{$command};
6493: my $handler = $$dispatch_info[0];
6494: my $need_encode = $$dispatch_info[1];
6495: my $client_types = $$dispatch_info[2];
6496: Debug("Matched dispatch hash: mustencode: $need_encode "
6497: ."ClientType $client_types");
6498:
6499: # Validate the request:
6500:
6501: my $ok = 1;
6502: my $requesterprivs = 0;
6503: if(&isClient()) {
6504: $requesterprivs |= $CLIENT_OK;
6505: }
6506: if(&isManager()) {
6507: $requesterprivs |= $MANAGER_OK;
6508: }
6509: if($need_encode && (!$wasenc)) {
6510: Debug("Must encode but wasn't: $need_encode $wasenc");
6511: $ok = 0;
6512: }
6513: if(($client_types & $requesterprivs) == 0) {
6514: Debug("Client not privileged to do this operation");
6515: $ok = 0;
6516: }
1.525 raeburn 6517: if ($ok) {
6518: if (ref($trust{$command}) eq 'HASH') {
6519: my $donechecks;
6520: if ($trust{$command}{'anywhere'}) {
6521: $donechecks = 1;
6522: } elsif ($trust{$command}{'manageronly'}) {
6523: unless (&isManager()) {
6524: $ok = 0;
6525: }
6526: $donechecks = 1;
6527: } elsif ($trust{$command}{'institutiononly'}) {
6528: unless ($clientsameinst) {
6529: $ok = 0;
6530: }
6531: $donechecks = 1;
6532: } elsif ($clientsameinst) {
6533: $donechecks = 1;
6534: }
6535: unless ($donechecks) {
6536: foreach my $rule (keys(%{$trust{$command}})) {
6537: next if ($rule eq 'remote');
6538: if ($trust{$command}{$rule}) {
6539: if ($clientprohibited{$rule}) {
6540: $ok = 0;
6541: } else {
6542: $ok = 1;
6543: $donechecks = 1;
6544: last;
6545: }
6546: }
6547: }
6548: }
6549: unless ($donechecks) {
6550: if ($trust{$command}{'remote'}) {
6551: if ($clientremoteok) {
6552: $ok = 1;
6553: } else {
6554: $ok = 0;
6555: }
6556: }
6557: }
6558: }
6559: }
1.213 foxr 6560:
6561: if($ok) {
6562: Debug("Dispatching to handler $command $tail");
6563: my $keep_going = &$handler($command, $tail, $client);
6564: return $keep_going;
6565: } else {
6566: Debug("Refusing to dispatch because client did not match requirements");
6567: Failure($client, "refused\n", $userinput);
6568: return 1;
6569: }
1.525 raeburn 6570: }
1.213 foxr 6571:
1.262 foxr 6572: print $client "unknown_cmd\n";
1.212 foxr 6573: # -------------------------------------------------------------------- complete
6574: Debug("process_request - returning 1");
6575: return 1;
6576: }
1.207 foxr 6577: #
6578: # Decipher encoded traffic
6579: # Parameters:
6580: # input - Encoded data.
6581: # Returns:
6582: # Decoded data or undef if encryption key was not yet negotiated.
6583: # Implicit input:
6584: # cipher - This global holds the negotiated encryption key.
6585: #
1.211 albertel 6586: sub decipher {
1.207 foxr 6587: my ($input) = @_;
6588: my $output = '';
1.212 foxr 6589:
6590:
1.207 foxr 6591: if($cipher) {
6592: my($enc, $enclength, $encinput) = split(/:/, $input);
6593: for(my $encidx = 0; $encidx < length($encinput); $encidx += 16) {
6594: $output .=
6595: $cipher->decrypt(pack("H16", substr($encinput, $encidx, 16)));
6596: }
6597: return substr($output, 0, $enclength);
6598: } else {
6599: return undef;
6600: }
6601: }
6602:
6603: #
6604: # Register a command processor. This function is invoked to register a sub
6605: # to process a request. Once registered, the ProcessRequest sub can automatically
6606: # dispatch requests to an appropriate sub, and do the top level validity checking
6607: # as well:
6608: # - Is the keyword recognized.
6609: # - Is the proper client type attempting the request.
6610: # - Is the request encrypted if it has to be.
6611: # Parameters:
6612: # $request_name - Name of the request being registered.
6613: # This is the command request that will match
6614: # against the hash keywords to lookup the information
6615: # associated with the dispatch information.
6616: # $procedure - Reference to a sub to call to process the request.
6617: # All subs get called as follows:
6618: # Procedure($cmd, $tail, $replyfd, $key)
6619: # $cmd - the actual keyword that invoked us.
6620: # $tail - the tail of the request that invoked us.
6621: # $replyfd- File descriptor connected to the client
6622: # $must_encode - True if the request must be encoded to be good.
6623: # $client_ok - True if it's ok for a client to request this.
6624: # $manager_ok - True if it's ok for a manager to request this.
6625: # Side effects:
6626: # - On success, the Dispatcher hash has an entry added for the key $RequestName
6627: # - On failure, the program will die as it's a bad internal bug to try to
6628: # register a duplicate command handler.
6629: #
1.211 albertel 6630: sub register_handler {
1.212 foxr 6631: my ($request_name,$procedure,$must_encode, $client_ok,$manager_ok) = @_;
1.207 foxr 6632:
6633: # Don't allow duplication#
6634:
6635: if (defined $Dispatcher{$request_name}) {
6636: die "Attempting to define a duplicate request handler for $request_name\n";
6637: }
6638: # Build the client type mask:
6639:
6640: my $client_type_mask = 0;
6641: if($client_ok) {
6642: $client_type_mask |= $CLIENT_OK;
6643: }
6644: if($manager_ok) {
6645: $client_type_mask |= $MANAGER_OK;
6646: }
6647:
6648: # Enter the hash:
6649:
6650: my @entry = ($procedure, $must_encode, $client_type_mask);
6651:
6652: $Dispatcher{$request_name} = \@entry;
6653:
6654: }
6655:
6656:
6657: #------------------------------------------------------------------
6658:
6659:
6660:
6661:
1.141 foxr 6662: #
1.96 foxr 6663: # Convert an error return code from lcpasswd to a string value.
6664: #
6665: sub lcpasswdstrerror {
6666: my $ErrorCode = shift;
1.97 foxr 6667: if(($ErrorCode < 0) || ($ErrorCode > $lastpwderror)) {
1.96 foxr 6668: return "lcpasswd Unrecognized error return value ".$ErrorCode;
6669: } else {
1.98 foxr 6670: return $passwderrors[$ErrorCode];
1.96 foxr 6671: }
6672: }
6673:
1.23 harris41 6674: # grabs exception and records it to log before exiting
6675: sub catchexception {
1.27 albertel 6676: my ($error)=@_;
1.25 www 6677: $SIG{'QUIT'}='DEFAULT';
6678: $SIG{__DIE__}='DEFAULT';
1.165 albertel 6679: &status("Catching exception");
1.190 albertel 6680: &logthis("<font color='red'>CRITICAL: "
1.373 albertel 6681: ."ABNORMAL EXIT. Child $$ for server ".$perlvar{'lonHostID'}." died through "
1.27 albertel 6682: ."a crash with this error msg->[$error]</font>");
1.57 www 6683: &logthis('Famous last words: '.$status.' - '.$lastlog);
1.27 albertel 6684: if ($client) { print $client "error: $error\n"; }
1.59 www 6685: $server->close();
1.27 albertel 6686: die($error);
1.23 harris41 6687: }
1.63 www 6688: sub timeout {
1.165 albertel 6689: &status("Handling Timeout");
1.190 albertel 6690: &logthis("<font color='red'>CRITICAL: TIME OUT ".$$."</font>");
1.63 www 6691: &catchexception('Timeout');
6692: }
1.22 harris41 6693: # -------------------------------- Set signal handlers to record abnormal exits
6694:
1.226 foxr 6695:
1.22 harris41 6696: $SIG{'QUIT'}=\&catchexception;
6697: $SIG{__DIE__}=\&catchexception;
6698:
1.81 matthew 6699: # ---------------------------------- Read loncapa_apache.conf and loncapa.conf
1.95 harris41 6700: &status("Read loncapa.conf and loncapa_apache.conf");
6701: my $perlvarref=LONCAPA::Configuration::read_conf('loncapa.conf');
1.141 foxr 6702: %perlvar=%{$perlvarref};
1.80 harris41 6703: undef $perlvarref;
1.19 www 6704:
1.35 harris41 6705: # ----------------------------- Make sure this process is running from user=www
6706: my $wwwid=getpwnam('www');
6707: if ($wwwid!=$<) {
1.134 albertel 6708: my $emailto="$perlvar{'lonAdmEMail'},$perlvar{'lonSysEMail'}";
6709: my $subj="LON: $currenthostid User ID mismatch";
1.37 harris41 6710: system("echo 'User ID mismatch. lond must be run as user www.' |\
1.35 harris41 6711: mailto $emailto -s '$subj' > /dev/null");
6712: exit 1;
6713: }
6714:
1.19 www 6715: # --------------------------------------------- Check if other instance running
6716:
6717: my $pidfile="$perlvar{'lonDaemons'}/logs/lond.pid";
6718:
6719: if (-e $pidfile) {
6720: my $lfh=IO::File->new("$pidfile");
6721: my $pide=<$lfh>;
6722: chomp($pide);
1.29 harris41 6723: if (kill 0 => $pide) { die "already running"; }
1.19 www 6724: }
1.1 albertel 6725:
6726: # ------------------------------------------------------------- Read hosts file
6727:
6728:
6729:
6730: # establish SERVER socket, bind and listen.
6731: $server = IO::Socket::INET->new(LocalPort => $perlvar{'londPort'},
6732: Type => SOCK_STREAM,
6733: Proto => 'tcp',
1.469 foxr 6734: ReuseAddr => 1,
1.1 albertel 6735: Listen => 10 )
1.29 harris41 6736: or die "making socket: $@\n";
1.1 albertel 6737:
6738: # --------------------------------------------------------- Do global variables
6739:
6740: # global variables
6741:
1.134 albertel 6742: my %children = (); # keys are current child process IDs
1.1 albertel 6743:
6744: sub REAPER { # takes care of dead children
6745: $SIG{CHLD} = \&REAPER;
1.165 albertel 6746: &status("Handling child death");
1.178 foxr 6747: my $pid;
6748: do {
6749: $pid = waitpid(-1,&WNOHANG());
6750: if (defined($children{$pid})) {
6751: &logthis("Child $pid died");
6752: delete($children{$pid});
1.183 albertel 6753: } elsif ($pid > 0) {
1.178 foxr 6754: &logthis("Unknown Child $pid died");
6755: }
6756: } while ( $pid > 0 );
6757: foreach my $child (keys(%children)) {
6758: $pid = waitpid($child,&WNOHANG());
6759: if ($pid > 0) {
6760: &logthis("Child $child - $pid looks like we missed it's death");
6761: delete($children{$pid});
6762: }
1.176 albertel 6763: }
1.165 albertel 6764: &status("Finished Handling child death");
1.1 albertel 6765: }
6766:
6767: sub HUNTSMAN { # signal handler for SIGINT
1.165 albertel 6768: &status("Killing children (INT)");
1.1 albertel 6769: local($SIG{CHLD}) = 'IGNORE'; # we're going to kill our children
6770: kill 'INT' => keys %children;
1.59 www 6771: &logthis("Free socket: ".shutdown($server,2)); # free up socket
1.1 albertel 6772: my $execdir=$perlvar{'lonDaemons'};
6773: unlink("$execdir/logs/lond.pid");
1.190 albertel 6774: &logthis("<font color='red'>CRITICAL: Shutting down</font>");
1.165 albertel 6775: &status("Done killing children");
1.1 albertel 6776: exit; # clean up with dignity
6777: }
6778:
6779: sub HUPSMAN { # signal handler for SIGHUP
6780: local($SIG{CHLD}) = 'IGNORE'; # we're going to kill our children
1.165 albertel 6781: &status("Killing children for restart (HUP)");
1.1 albertel 6782: kill 'INT' => keys %children;
1.59 www 6783: &logthis("Free socket: ".shutdown($server,2)); # free up socket
1.190 albertel 6784: &logthis("<font color='red'>CRITICAL: Restarting</font>");
1.134 albertel 6785: my $execdir=$perlvar{'lonDaemons'};
1.30 harris41 6786: unlink("$execdir/logs/lond.pid");
1.165 albertel 6787: &status("Restarting self (HUP)");
1.1 albertel 6788: exec("$execdir/lond"); # here we go again
6789: }
6790:
1.144 foxr 6791: #
1.148 foxr 6792: # Reload the Apache daemon's state.
1.150 foxr 6793: # This is done by invoking /home/httpd/perl/apachereload
6794: # a setuid perl script that can be root for us to do this job.
1.148 foxr 6795: #
6796: sub ReloadApache {
1.473 raeburn 6797: # --------------------------- Handle case of another apachereload process (locking)
1.474 raeburn 6798: if (&LONCAPA::try_to_lock('/tmp/lock_apachereload')) {
6799: my $execdir = $perlvar{'lonDaemons'};
6800: my $script = $execdir."/apachereload";
6801: system($script);
6802: unlink('/tmp/lock_apachereload'); # Remove the lock file.
6803: }
1.148 foxr 6804: }
6805:
6806: #
1.144 foxr 6807: # Called in response to a USR2 signal.
6808: # - Reread hosts.tab
6809: # - All children connected to hosts that were removed from hosts.tab
6810: # are killed via SIGINT
6811: # - All children connected to previously existing hosts are sent SIGUSR1
6812: # - Our internal hosts hash is updated to reflect the new contents of
6813: # hosts.tab causing connections from hosts added to hosts.tab to
6814: # now be honored.
6815: #
6816: sub UpdateHosts {
1.165 albertel 6817: &status("Reload hosts.tab");
1.147 foxr 6818: logthis('<font color="blue"> Updating connections </font>');
1.148 foxr 6819: #
6820: # The %children hash has the set of IP's we currently have children
6821: # on. These need to be matched against records in the hosts.tab
6822: # Any ip's no longer in the table get killed off they correspond to
6823: # either dropped or changed hosts. Note that the re-read of the table
6824: # will take care of new and changed hosts as connections come into being.
6825:
1.371 albertel 6826: &Apache::lonnet::reset_hosts_info();
1.532 ! raeburn 6827: my %active;
1.148 foxr 6828:
1.368 albertel 6829: foreach my $child (keys(%children)) {
1.148 foxr 6830: my $childip = $children{$child};
1.374 albertel 6831: if ($childip ne '127.0.0.1'
6832: && !defined(&Apache::lonnet::get_hosts_from_ip($childip))) {
1.149 foxr 6833: logthis('<font color="blue"> UpdateHosts killing child '
6834: ." $child for ip $childip </font>");
1.148 foxr 6835: kill('INT', $child);
1.149 foxr 6836: } else {
1.532 ! raeburn 6837: $active{$child} = $childip;
1.149 foxr 6838: logthis('<font color="green"> keeping child for ip '
6839: ." $childip (pid=$child) </font>");
1.148 foxr 6840: }
6841: }
1.532 ! raeburn 6842:
! 6843: my %oldconf = %secureconf;
! 6844: my %connchange;
! 6845: if (lonssl::Read_Connect_Config(\%secureconf,\%perlvar) eq 'ok') {
! 6846: logthis('<font color="blue"> Reloaded SSL connection rules </font>');
! 6847: } else {
! 6848: logthis('<font color="yellow"> Failed to reload SSL connection rules </font>');
! 6849: }
! 6850: if ((ref($oldconf{'connfrom'}) eq 'HASH') && (ref($secureconf{'connfrom'}) eq 'HASH')) {
! 6851: foreach my $type ('dom','intdom','other') {
! 6852: if ((($oldconf{'connfrom'}{$type} eq 'no') && ($secureconf{'connfrom'}{$type} eq 'req')) ||
! 6853: (($oldconf{'connfrom'}{$type} eq 'req') && ($secureconf{'connfrom'}{$type} eq 'no'))) {
! 6854: $connchange{$type} = 1;
! 6855: }
! 6856: }
! 6857: }
! 6858: if (keys(%connchange)) {
! 6859: foreach my $child (keys(%active)) {
! 6860: my $childip = $active{$child};
! 6861: if ($childip ne '127.0.0.1') {
! 6862: my $childhostname = gethostbyaddr(Socket::inet_aton($childip),AF_INET);
! 6863: if ($childhostname ne '') {
! 6864: my $childlonhost = &Apache::lonnet::get_server_homeID($childhostname);
! 6865: my ($samedom,$sameinst) = &set_client_info($childlonhost);
! 6866: if ($samedom) {
! 6867: if ($connchange{'dom'}) {
! 6868: logthis('<font color="blue"> UpdateHosts killing child '
! 6869: ." $child for ip $childip </font>");
! 6870: kill('INT', $child);
! 6871: }
! 6872: } elsif ($sameinst) {
! 6873: if ($connchange{'intdom'}) {
! 6874: logthis('<font color="blue"> UpdateHosts killing child '
! 6875: ." $child for ip $childip </font>");
! 6876: kill('INT', $child);
! 6877: }
! 6878: } else {
! 6879: if ($connchange{'other'}) {
! 6880: logthis('<font color="blue"> UpdateHosts killing child '
! 6881: ." $child for ip $childip </font>");
! 6882: kill('INT', $child);
! 6883: }
! 6884: }
! 6885: }
! 6886: }
! 6887: }
! 6888: }
1.148 foxr 6889: ReloadApache;
1.165 albertel 6890: &status("Finished reloading hosts.tab");
1.144 foxr 6891: }
6892:
1.57 www 6893: sub checkchildren {
1.165 albertel 6894: &status("Checking on the children (sending signals)");
1.57 www 6895: &initnewstatus();
6896: &logstatus();
6897: &logthis('Going to check on the children');
1.134 albertel 6898: my $docdir=$perlvar{'lonDocRoot'};
1.61 harris41 6899: foreach (sort keys %children) {
1.221 albertel 6900: #sleep 1;
1.57 www 6901: unless (kill 'USR1' => $_) {
6902: &logthis ('Child '.$_.' is dead');
6903: &logstatus($$.' is dead');
1.221 albertel 6904: delete($children{$_});
1.57 www 6905: }
1.61 harris41 6906: }
1.63 www 6907: sleep 5;
1.212 foxr 6908: $SIG{ALRM} = sub { Debug("timeout");
6909: die "timeout"; };
1.113 albertel 6910: $SIG{__DIE__} = 'DEFAULT';
1.165 albertel 6911: &status("Checking on the children (waiting for reports)");
1.63 www 6912: foreach (sort keys %children) {
6913: unless (-e "$docdir/lon-status/londchld/$_.txt") {
1.113 albertel 6914: eval {
6915: alarm(300);
1.63 www 6916: &logthis('Child '.$_.' did not respond');
1.67 albertel 6917: kill 9 => $_;
1.131 albertel 6918: #$emailto="$perlvar{'lonAdmEMail'},$perlvar{'lonSysEMail'}";
6919: #$subj="LON: $currenthostid killed lond process $_";
6920: #my $result=`echo 'Killed lond process $_.' | mailto $emailto -s '$subj' > /dev/null`;
6921: #$execdir=$perlvar{'lonDaemons'};
6922: #$result=`/bin/cp $execdir/logs/lond.log $execdir/logs/lond.log.$_`;
1.221 albertel 6923: delete($children{$_});
1.113 albertel 6924: alarm(0);
6925: }
1.63 www 6926: }
6927: }
1.113 albertel 6928: $SIG{ALRM} = 'DEFAULT';
1.155 albertel 6929: $SIG{__DIE__} = \&catchexception;
1.165 albertel 6930: &status("Finished checking children");
1.221 albertel 6931: &logthis('Finished Checking children');
1.57 www 6932: }
6933:
1.1 albertel 6934: # --------------------------------------------------------------------- Logging
6935:
6936: sub logthis {
6937: my $message=shift;
6938: my $execdir=$perlvar{'lonDaemons'};
6939: my $fh=IO::File->new(">>$execdir/logs/lond.log");
6940: my $now=time;
6941: my $local=localtime($now);
1.58 www 6942: $lastlog=$local.': '.$message;
1.1 albertel 6943: print $fh "$local ($$): $message\n";
6944: }
6945:
1.77 foxr 6946: # ------------------------- Conditional log if $DEBUG true.
6947: sub Debug {
6948: my $message = shift;
6949: if($DEBUG) {
6950: &logthis($message);
6951: }
6952: }
1.161 foxr 6953:
6954: #
6955: # Sub to do replies to client.. this gives a hook for some
6956: # debug tracing too:
6957: # Parameters:
6958: # fd - File open on client.
6959: # reply - Text to send to client.
6960: # request - Original request from client.
6961: #
1.490 droeschl 6962: #NOTE $reply must be terminated by exactly *one* \n. If $reply is a reference
6963: #this is done automatically ($$reply must not contain any \n in this case).
6964: #If $reply is a string the caller has to ensure this.
1.161 foxr 6965: sub Reply {
1.192 foxr 6966: my ($fd, $reply, $request) = @_;
1.387 albertel 6967: if (ref($reply)) {
6968: print $fd $$reply;
6969: print $fd "\n";
6970: if ($DEBUG) { Debug("Request was $request Reply was $$reply"); }
6971: } else {
6972: print $fd $reply;
6973: if ($DEBUG) { Debug("Request was $request Reply was $reply"); }
6974: }
1.212 foxr 6975: $Transactions++;
6976: }
6977:
6978:
6979: #
6980: # Sub to report a failure.
6981: # This function:
6982: # - Increments the failure statistic counters.
6983: # - Invokes Reply to send the error message to the client.
6984: # Parameters:
6985: # fd - File descriptor open on the client
6986: # reply - Reply text to emit.
6987: # request - The original request message (used by Reply
6988: # to debug if that's enabled.
6989: # Implicit outputs:
6990: # $Failures- The number of failures is incremented.
6991: # Reply (invoked here) sends a message to the
6992: # client:
6993: #
6994: sub Failure {
6995: my $fd = shift;
6996: my $reply = shift;
6997: my $request = shift;
6998:
6999: $Failures++;
7000: Reply($fd, $reply, $request); # That's simple eh?
1.161 foxr 7001: }
1.57 www 7002: # ------------------------------------------------------------------ Log status
7003:
7004: sub logstatus {
1.178 foxr 7005: &status("Doing logging");
7006: my $docdir=$perlvar{'lonDocRoot'};
7007: {
7008: my $fh=IO::File->new(">$docdir/lon-status/londchld/$$.txt");
1.200 matthew 7009: print $fh $status."\n".$lastlog."\n".time."\n$keymode";
1.178 foxr 7010: $fh->close();
7011: }
1.221 albertel 7012: &status("Finished $$.txt");
7013: {
7014: open(LOG,">>$docdir/lon-status/londstatus.txt");
7015: flock(LOG,LOCK_EX);
7016: print LOG $$."\t".$clientname."\t".$currenthostid."\t"
7017: .$status."\t".$lastlog."\t $keymode\n";
1.275 albertel 7018: flock(LOG,LOCK_UN);
1.221 albertel 7019: close(LOG);
7020: }
1.178 foxr 7021: &status("Finished logging");
1.57 www 7022: }
7023:
7024: sub initnewstatus {
7025: my $docdir=$perlvar{'lonDocRoot'};
7026: my $fh=IO::File->new(">$docdir/lon-status/londstatus.txt");
1.460 foxr 7027: my $now=time();
1.57 www 7028: my $local=localtime($now);
7029: print $fh "LOND status $local - parent $$\n\n";
1.64 www 7030: opendir(DIR,"$docdir/lon-status/londchld");
1.134 albertel 7031: while (my $filename=readdir(DIR)) {
1.64 www 7032: unlink("$docdir/lon-status/londchld/$filename");
7033: }
7034: closedir(DIR);
1.57 www 7035: }
7036:
7037: # -------------------------------------------------------------- Status setting
7038:
7039: sub status {
7040: my $what=shift;
7041: my $now=time;
7042: my $local=localtime($now);
1.178 foxr 7043: $status=$local.': '.$what;
7044: $0='lond: '.$what.' '.$local;
1.57 www 7045: }
1.11 www 7046:
1.13 www 7047: # -------------------------------------------------------------- Talk to lonsql
7048:
1.234 foxr 7049: sub sql_reply {
1.12 harris41 7050: my ($cmd)=@_;
1.234 foxr 7051: my $answer=&sub_sql_reply($cmd);
7052: if ($answer eq 'con_lost') { $answer=&sub_sql_reply($cmd); }
1.12 harris41 7053: return $answer;
7054: }
7055:
1.234 foxr 7056: sub sub_sql_reply {
1.12 harris41 7057: my ($cmd)=@_;
7058: my $unixsock="mysqlsock";
7059: my $peerfile="$perlvar{'lonSockDir'}/$unixsock";
7060: my $sclient=IO::Socket::UNIX->new(Peer =>"$peerfile",
7061: Type => SOCK_STREAM,
7062: Timeout => 10)
7063: or return "con_lost";
1.319 www 7064: print $sclient "$cmd:$currentdomainid\n";
1.12 harris41 7065: my $answer=<$sclient>;
7066: chomp($answer);
7067: if (!$answer) { $answer="con_lost"; }
7068: return $answer;
7069: }
7070:
1.1 albertel 7071: # --------------------------------------- Is this the home server of an author?
1.11 www 7072:
1.1 albertel 7073: sub ishome {
7074: my $author=shift;
7075: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
7076: my ($udom,$uname)=split(/\//,$author);
7077: my $proname=propath($udom,$uname);
7078: if (-e $proname) {
7079: return 'owner';
7080: } else {
7081: return 'not_owner';
7082: }
7083: }
7084:
7085: # ======================================================= Continue main program
7086: # ---------------------------------------------------- Fork once and dissociate
7087:
1.134 albertel 7088: my $fpid=fork;
1.1 albertel 7089: exit if $fpid;
1.29 harris41 7090: die "Couldn't fork: $!" unless defined ($fpid);
1.1 albertel 7091:
1.29 harris41 7092: POSIX::setsid() or die "Can't start new session: $!";
1.1 albertel 7093:
7094: # ------------------------------------------------------- Write our PID on disk
7095:
1.134 albertel 7096: my $execdir=$perlvar{'lonDaemons'};
1.1 albertel 7097: open (PIDSAVE,">$execdir/logs/lond.pid");
7098: print PIDSAVE "$$\n";
7099: close(PIDSAVE);
1.190 albertel 7100: &logthis("<font color='red'>CRITICAL: ---------- Starting ----------</font>");
1.57 www 7101: &status('Starting');
1.1 albertel 7102:
1.106 foxr 7103:
1.1 albertel 7104:
7105: # ----------------------------------------------------- Install signal handlers
7106:
1.57 www 7107:
1.1 albertel 7108: $SIG{CHLD} = \&REAPER;
7109: $SIG{INT} = $SIG{TERM} = \&HUNTSMAN;
7110: $SIG{HUP} = \&HUPSMAN;
1.57 www 7111: $SIG{USR1} = \&checkchildren;
1.144 foxr 7112: $SIG{USR2} = \&UpdateHosts;
1.106 foxr 7113:
1.148 foxr 7114: # Read the host hashes:
1.368 albertel 7115: &Apache::lonnet::load_hosts_tab();
1.447 raeburn 7116: my %iphost = &Apache::lonnet::get_iphost(1);
1.106 foxr 7117:
1.480 raeburn 7118: $dist=`$perlvar{'lonDaemons'}/distprobe`;
1.286 albertel 7119:
1.471 raeburn 7120: my $arch = `uname -i`;
1.475 raeburn 7121: chomp($arch);
1.471 raeburn 7122: if ($arch eq 'unknown') {
7123: $arch = `uname -m`;
1.475 raeburn 7124: chomp($arch);
1.471 raeburn 7125: }
7126:
1.532 ! raeburn 7127: unless (lonssl::Read_Connect_Config(\%secureconf,\%perlvar) eq 'ok') {
! 7128: &logthis('<font color="blue">No connectionrules table. Will fallback to loncapa.conf</font>');
! 7129: }
! 7130:
1.106 foxr 7131: # --------------------------------------------------------------
7132: # Accept connections. When a connection comes in, it is validated
7133: # and if good, a child process is created to process transactions
7134: # along the connection.
7135:
1.1 albertel 7136: while (1) {
1.165 albertel 7137: &status('Starting accept');
1.106 foxr 7138: $client = $server->accept() or next;
1.165 albertel 7139: &status('Accepted '.$client.' off to spawn');
1.386 albertel 7140: make_new_child($client);
1.165 albertel 7141: &status('Finished spawning');
1.1 albertel 7142: }
7143:
1.212 foxr 7144: sub make_new_child {
7145: my $pid;
7146: # my $cipher; # Now global
7147: my $sigset;
1.178 foxr 7148:
1.212 foxr 7149: $client = shift;
7150: &status('Starting new child '.$client);
7151: &logthis('<font color="green"> Attempting to start child ('.$client.
7152: ")</font>");
7153: # block signal for fork
7154: $sigset = POSIX::SigSet->new(SIGINT);
7155: sigprocmask(SIG_BLOCK, $sigset)
7156: or die "Can't block SIGINT for fork: $!\n";
1.178 foxr 7157:
1.212 foxr 7158: die "fork: $!" unless defined ($pid = fork);
1.178 foxr 7159:
1.212 foxr 7160: $client->sockopt(SO_KEEPALIVE, 1); # Enable monitoring of
7161: # connection liveness.
1.178 foxr 7162:
1.212 foxr 7163: #
7164: # Figure out who we're talking to so we can record the peer in
7165: # the pid hash.
7166: #
7167: my $caller = getpeername($client);
7168: my ($port,$iaddr);
7169: if (defined($caller) && length($caller) > 0) {
7170: ($port,$iaddr)=unpack_sockaddr_in($caller);
7171: } else {
7172: &logthis("Unable to determine who caller was, getpeername returned nothing");
7173: }
7174: if (defined($iaddr)) {
7175: $clientip = inet_ntoa($iaddr);
7176: Debug("Connected with $clientip");
7177: } else {
7178: &logthis("Unable to determine clientip");
7179: $clientip='Unavailable';
7180: }
7181:
7182: if ($pid) {
7183: # Parent records the child's birth and returns.
7184: sigprocmask(SIG_UNBLOCK, $sigset)
7185: or die "Can't unblock SIGINT for fork: $!\n";
7186: $children{$pid} = $clientip;
7187: &status('Started child '.$pid);
1.462 foxr 7188: close($client);
1.212 foxr 7189: return;
7190: } else {
7191: # Child can *not* return from this subroutine.
7192: $SIG{INT} = 'DEFAULT'; # make SIGINT kill us as it did before
7193: $SIG{CHLD} = 'DEFAULT'; #make this default so that pwauth returns
7194: #don't get intercepted
7195: $SIG{USR1}= \&logstatus;
7196: $SIG{ALRM}= \&timeout;
1.468 foxr 7197: #
7198: # Block sigpipe as it gets thrownon socket disconnect and we want to
7199: # deal with that as a read faiure instead.
7200: #
7201: my $blockset = POSIX::SigSet->new(SIGPIPE);
7202: sigprocmask(SIG_BLOCK, $blockset);
7203:
1.212 foxr 7204: $lastlog='Forked ';
7205: $status='Forked';
1.178 foxr 7206:
1.212 foxr 7207: # unblock signals
7208: sigprocmask(SIG_UNBLOCK, $sigset)
7209: or die "Can't unblock SIGINT for fork: $!\n";
1.178 foxr 7210:
1.212 foxr 7211: # my $tmpsnum=0; # Now global
7212: #---------------------------------------------------- kerberos 5 initialization
7213: &Authen::Krb5::init_context();
1.511 raeburn 7214:
7215: my $no_ets;
1.514 raeburn 7216: if ($dist =~ /^(?:centos|rhes|scientific)(\d+)$/) {
1.511 raeburn 7217: if ($1 >= 7) {
7218: $no_ets = 1;
7219: }
7220: } elsif ($dist =~ /^suse(\d+\.\d+)$/) {
7221: if (($1 eq '9.3') || ($1 >= 12.2)) {
7222: $no_ets = 1;
7223: }
1.514 raeburn 7224: } elsif ($dist =~ /^sles(\d+)$/) {
7225: if ($1 > 11) {
7226: $no_ets = 1;
7227: }
1.511 raeburn 7228: } elsif ($dist =~ /^fedora(\d+)$/) {
7229: if ($1 < 7) {
7230: $no_ets = 1;
7231: }
7232: }
7233: unless ($no_ets) {
1.286 albertel 7234: &Authen::Krb5::init_ets();
7235: }
1.209 albertel 7236:
1.212 foxr 7237: &status('Accepted connection');
7238: # =============================================================================
7239: # do something with the connection
7240: # -----------------------------------------------------------------------------
7241: # see if we know client and 'check' for spoof IP by ineffective challenge
1.178 foxr 7242:
1.278 albertel 7243: my $outsideip=$clientip;
7244: if ($clientip eq '127.0.0.1') {
1.368 albertel 7245: $outsideip=&Apache::lonnet::get_host_ip($perlvar{'lonHostID'});
1.278 albertel 7246: }
1.412 foxr 7247: &ReadManagerTable();
1.368 albertel 7248: my $clientrec=defined(&Apache::lonnet::get_hosts_from_ip($outsideip));
1.278 albertel 7249: my $ismanager=($managers{$outsideip} ne undef);
1.432 raeburn 7250: $clientname = "[unknown]";
1.212 foxr 7251: if($clientrec) { # Establish client type.
7252: $ConnectionType = "client";
1.368 albertel 7253: $clientname = (&Apache::lonnet::get_hosts_from_ip($outsideip))[-1];
1.212 foxr 7254: if($ismanager) {
7255: $ConnectionType = "both";
7256: }
7257: } else {
7258: $ConnectionType = "manager";
1.278 albertel 7259: $clientname = $managers{$outsideip};
1.212 foxr 7260: }
1.532 ! raeburn 7261: my ($clientok,$clientinfoset);
1.178 foxr 7262:
1.212 foxr 7263: if ($clientrec || $ismanager) {
7264: &status("Waiting for init from $clientip $clientname");
7265: &logthis('<font color="yellow">INFO: Connection, '.
7266: $clientip.
7267: " ($clientname) connection type = $ConnectionType </font>" );
7268: &status("Connecting $clientip ($clientname))");
7269: my $remotereq=<$client>;
7270: chomp($remotereq);
7271: Debug("Got init: $remotereq");
1.337 albertel 7272:
1.212 foxr 7273: if ($remotereq =~ /^init/) {
7274: &sethost("sethost:$perlvar{'lonHostID'}");
7275: #
7276: # If the remote is attempting a local init... give that a try:
7277: #
1.432 raeburn 7278: (my $i, my $inittype, $clientversion) = split(/:/, $remotereq);
1.492 droeschl 7279: # For LON-CAPA 2.9, the client session will have sent its LON-CAPA
7280: # version when initiating the connection. For LON-CAPA 2.8 and older,
7281: # the version is retrieved from the global %loncaparevs in lonnet.pm.
1.494 droeschl 7282: # $clientversion contains path to keyfile if $inittype eq 'local'
7283: # it's overridden below in this case
1.492 droeschl 7284: $clientversion ||= $Apache::lonnet::loncaparevs{$clientname};
1.209 albertel 7285:
1.212 foxr 7286: # If the connection type is ssl, but I didn't get my
7287: # certificate files yet, then I'll drop back to
7288: # insecure (if allowed).
1.532 ! raeburn 7289:
! 7290: if ($inittype eq "ssl") {
! 7291: my $context;
! 7292: if ($clientsamedom) {
! 7293: $context = 'dom';
! 7294: if ($secureconf{'connfrom'}{'dom'} eq 'no') {
! 7295: $inittype = "";
! 7296: }
! 7297: } elsif ($clientsameinst) {
! 7298: $context = 'intdom';
! 7299: if ($secureconf{'connfrom'}{'intdom'} eq 'no') {
! 7300: $inittype = "";
! 7301: }
! 7302: } else {
! 7303: $context = 'other';
! 7304: if ($secureconf{'connfrom'}{'other'} eq 'no') {
! 7305: $inittype = "";
! 7306: }
! 7307: }
! 7308: if ($inittype eq '') {
! 7309: &logthis("<font color=\"blue\"> Domain config set "
! 7310: ."to no ssl for $clientname (context: $context)"
! 7311: ." -- trying insecure auth</font>");
! 7312: }
! 7313: }
! 7314:
1.212 foxr 7315: if($inittype eq "ssl") {
7316: my ($ca, $cert) = lonssl::CertificateFile;
7317: my $kfile = lonssl::KeyFile;
7318: if((!$ca) ||
7319: (!$cert) ||
7320: (!$kfile)) {
7321: $inittype = ""; # This forces insecure attempt.
7322: &logthis("<font color=\"blue\"> Certificates not "
7323: ."installed -- trying insecure auth</font>");
1.224 foxr 7324: } else { # SSL certificates are in place so
1.212 foxr 7325: } # Leave the inittype alone.
7326: }
7327:
7328: if($inittype eq "local") {
1.432 raeburn 7329: $clientversion = $perlvar{'lonVersion'};
1.212 foxr 7330: my $key = LocalConnection($client, $remotereq);
7331: if($key) {
7332: Debug("Got local key $key");
7333: $clientok = 1;
7334: my $cipherkey = pack("H32", $key);
7335: $cipher = new IDEA($cipherkey);
7336: print $client "ok:local\n";
1.442 www 7337: &logthis('<font color="green">'
1.212 foxr 7338: . "Successful local authentication </font>");
7339: $keymode = "local"
1.178 foxr 7340: } else {
1.212 foxr 7341: Debug("Failed to get local key");
7342: $clientok = 0;
7343: shutdown($client, 3);
7344: close $client;
1.178 foxr 7345: }
1.212 foxr 7346: } elsif ($inittype eq "ssl") {
1.532 ! raeburn 7347: my $key = SSLConnection($client,$clientname);
1.212 foxr 7348: if ($key) {
7349: $clientok = 1;
7350: my $cipherkey = pack("H32", $key);
7351: $cipher = new IDEA($cipherkey);
7352: &logthis('<font color="green">'
7353: ."Successfull ssl authentication with $clientname </font>");
7354: $keymode = "ssl";
7355:
1.178 foxr 7356: } else {
1.212 foxr 7357: $clientok = 0;
7358: close $client;
1.178 foxr 7359: }
1.212 foxr 7360:
7361: } else {
1.532 ! raeburn 7362: $clientinfoset = &set_client_info();
1.212 foxr 7363: my $ok = InsecureConnection($client);
7364: if($ok) {
7365: $clientok = 1;
7366: &logthis('<font color="green">'
7367: ."Successful insecure authentication with $clientname </font>");
7368: print $client "ok\n";
7369: $keymode = "insecure";
1.178 foxr 7370: } else {
1.212 foxr 7371: &logthis('<font color="yellow">'
7372: ."Attempted insecure connection disallowed </font>");
7373: close $client;
7374: $clientok = 0;
1.178 foxr 7375:
7376: }
7377: }
1.212 foxr 7378: } else {
7379: &logthis(
7380: "<font color='blue'>WARNING: "
7381: ."$clientip failed to initialize: >$remotereq< </font>");
7382: &status('No init '.$clientip);
7383: }
7384:
7385: } else {
7386: &logthis(
7387: "<font color='blue'>WARNING: Unknown client $clientip</font>");
7388: &status('Hung up on '.$clientip);
7389: }
7390:
7391: if ($clientok) {
7392: # ---------------- New known client connecting, could mean machine online again
1.368 albertel 7393: if (&Apache::lonnet::get_host_ip($currenthostid) ne $clientip
1.367 albertel 7394: && $clientip ne '127.0.0.1') {
1.375 albertel 7395: &Apache::lonnet::reconlonc($clientname);
1.212 foxr 7396: }
7397: &logthis("<font color='green'>Established connection: $clientname</font>");
7398: &status('Will listen to '.$clientname);
7399: # ------------------------------------------------------------ Process requests
7400: my $keep_going = 1;
7401: my $user_input;
1.532 ! raeburn 7402: unless ($clientinfoset) {
! 7403: $clientinfoset = &set_client_info();
1.525 raeburn 7404: }
7405: $clientremoteok = 0;
7406: unless ($clientsameinst) {
7407: $clientremoteok = 1;
7408: my $defdom = &Apache::lonnet::host_domain($perlvar{'lonHostID'});
7409: %clientprohibited = &get_prohibited($defdom);
7410: if ($clientintdom) {
7411: my $remsessconf = &get_usersession_config($defdom,'remotesession');
7412: if (ref($remsessconf) eq 'HASH') {
7413: if (ref($remsessconf->{'remote'}) eq 'HASH') {
7414: if (ref($remsessconf->{'remote'}->{'excludedomain'}) eq 'ARRAY') {
7415: if (grep(/^\Q$clientintdom\E$/,@{$remsessconf->{'remote'}->{'excludedomain'}})) {
7416: $clientremoteok = 0;
7417: }
7418: }
7419: if (ref($remsessconf->{'remote'}->{'includedomain'}) eq 'ARRAY') {
7420: if (grep(/^\Q$clientintdom\E$/,@{$remsessconf->{'remote'}->{'includedomain'}})) {
7421: $clientremoteok = 1;
7422: } else {
7423: $clientremoteok = 0;
7424: }
7425: }
7426: }
7427: }
7428: }
7429: }
1.212 foxr 7430: while(($user_input = get_request) && $keep_going) {
7431: alarm(120);
7432: Debug("Main: Got $user_input\n");
7433: $keep_going = &process_request($user_input);
1.178 foxr 7434: alarm(0);
1.212 foxr 7435: &status('Listening to '.$clientname." ($keymode)");
1.161 foxr 7436: }
1.212 foxr 7437:
1.59 www 7438: # --------------------------------------------- client unknown or fishy, refuse
1.212 foxr 7439: } else {
1.161 foxr 7440: print $client "refused\n";
7441: $client->close();
1.190 albertel 7442: &logthis("<font color='blue'>WARNING: "
1.161 foxr 7443: ."Rejected client $clientip, closing connection</font>");
7444: }
1.525 raeburn 7445: }
1.161 foxr 7446:
1.1 albertel 7447: # =============================================================================
1.161 foxr 7448:
1.190 albertel 7449: &logthis("<font color='red'>CRITICAL: "
1.161 foxr 7450: ."Disconnect from $clientip ($clientname)</font>");
7451:
7452:
7453: # this exit is VERY important, otherwise the child will become
7454: # a producer of more and more children, forking yourself into
7455: # process death.
7456: exit;
1.106 foxr 7457:
1.78 foxr 7458: }
1.532 ! raeburn 7459:
! 7460: #
! 7461: # Used to determine if a particular client is from the same domain
! 7462: # as the current server, or from the same internet domain.
! 7463: #
! 7464: # Optional input -- the client to check for domain and internet domain.
! 7465: # If not specified, defaults to the package variable: $clientname
! 7466: #
! 7467: # If called in array context will not set package variables, but will
! 7468: # instead return an array of two values - (a) true if client is in the
! 7469: # same domain as the server, and (b) true if client is in the same internet
! 7470: # domain.
! 7471: #
! 7472: # If called in scalar context, sets package variables for current client:
! 7473: #
! 7474: # $clienthomedom - LonCAPA domain of homeID for client.
! 7475: # $clientsamedom - LonCAPA domain same for this host and client.
! 7476: # $clientintdom - LonCAPA "internet domain" for client.
! 7477: # $clientsameinst - LonCAPA "internet domain" same for this host & client.
! 7478: #
! 7479: # returns 1 to indicate package variables have been set for current client.
! 7480: #
! 7481:
! 7482: sub set_client_info {
! 7483: my ($lonhost) = @_;
! 7484: $lonhost ||= $clientname;
! 7485: my $clienthost = &Apache::lonnet::hostname($lonhost);
! 7486: my $clientserverhomeID = &Apache::lonnet::get_server_homeID($clienthost);
! 7487: my $homedom = &Apache::lonnet::host_domain($clientserverhomeID);
! 7488: my $samedom = 0;
! 7489: if ($perlvar{'lonDefDom'} eq $homedom) {
! 7490: $samedom = 1;
! 7491: }
! 7492: my $intdom = &Apache::lonnet::internet_dom($clientserverhomeID);
! 7493: my $sameinst = 0;
! 7494: if ($intdom ne '') {
! 7495: my $internet_names = &Apache::lonnet::get_internet_names($currenthostid);
! 7496: if (ref($internet_names) eq 'ARRAY') {
! 7497: if (grep(/^\Q$intdom\E$/,@{$internet_names})) {
! 7498: $sameinst = 1;
! 7499: }
! 7500: }
! 7501: }
! 7502: if (wantarray) {
! 7503: return ($samedom,$sameinst);
! 7504: } else {
! 7505: $clienthomedom = $homedom;
! 7506: $clientsamedom = $samedom;
! 7507: $clientintdom = $intdom;
! 7508: $clientsameinst = $sameinst;
! 7509: return 1;
! 7510: }
! 7511: }
! 7512:
1.261 foxr 7513: #
7514: # Determine if a user is an author for the indicated domain.
7515: #
7516: # Parameters:
7517: # domain - domain to check in .
7518: # user - Name of user to check.
7519: #
7520: # Return:
7521: # 1 - User is an author for domain.
7522: # 0 - User is not an author for domain.
7523: sub is_author {
7524: my ($domain, $user) = @_;
7525:
7526: &Debug("is_author: $user @ $domain");
7527:
7528: my $hashref = &tie_user_hash($domain, $user, "roles",
7529: &GDBM_READER());
7530:
7531: # Author role should show up as a key /domain/_au
1.78 foxr 7532:
1.321 albertel 7533: my $value;
1.487 foxr 7534: if ($hashref) {
1.78 foxr 7535:
1.487 foxr 7536: my $key = "/$domain/_au";
7537: if (defined($hashref)) {
7538: $value = $hashref->{$key};
7539: if(!untie_user_hash($hashref)) {
7540: return 'error: ' . ($!+0)." untie (GDBM) Failed";
7541: }
7542: }
7543:
7544: if(defined($value)) {
7545: &Debug("$user @ $domain is an author");
7546: }
7547: } else {
7548: return 'error: '.($!+0)." tie (GDBM) Failed";
1.261 foxr 7549: }
7550:
7551: return defined($value);
7552: }
1.78 foxr 7553: #
7554: # Checks to see if the input roleput request was to set
1.482 www 7555: # an author role. If so, creates construction space
1.78 foxr 7556: # Parameters:
7557: # request - The request sent to the rolesput subchunk.
7558: # We're looking for /domain/_au
7559: # domain - The domain in which the user is having roles doctored.
7560: # user - Name of the user for which the role is being put.
7561: # authtype - The authentication type associated with the user.
7562: #
1.289 albertel 7563: sub manage_permissions {
1.192 foxr 7564: my ($request, $domain, $user, $authtype) = @_;
1.78 foxr 7565: # See if the request is of the form /$domain/_au
1.289 albertel 7566: if($request =~ /^(\/\Q$domain\E\/_au)$/) { # It's an author rolesput...
1.484 raeburn 7567: my $path=$perlvar{'lonDocRoot'}."/priv/$domain";
1.482 www 7568: unless (-e $path) {
7569: mkdir($path);
7570: }
7571: unless (-e $path.'/'.$user) {
7572: mkdir($path.'/'.$user);
7573: }
1.78 foxr 7574: }
7575: }
1.222 foxr 7576:
7577:
7578: #
7579: # Return the full path of a user password file, whether it exists or not.
7580: # Parameters:
7581: # domain - Domain in which the password file lives.
7582: # user - name of the user.
7583: # Returns:
7584: # Full passwd path:
7585: #
7586: sub password_path {
7587: my ($domain, $user) = @_;
1.264 albertel 7588: return &propath($domain, $user).'/passwd';
1.222 foxr 7589: }
7590:
7591: # Password Filename
7592: # Returns the path to a passwd file given domain and user... only if
7593: # it exists.
7594: # Parameters:
7595: # domain - Domain in which to search.
7596: # user - username.
7597: # Returns:
7598: # - If the password file exists returns its path.
7599: # - If the password file does not exist, returns undefined.
7600: #
7601: sub password_filename {
7602: my ($domain, $user) = @_;
7603:
7604: Debug ("PasswordFilename called: dom = $domain user = $user");
7605:
7606: my $path = &password_path($domain, $user);
7607: Debug("PasswordFilename got path: $path");
7608: if(-e $path) {
7609: return $path;
7610: } else {
7611: return undef;
7612: }
7613: }
7614:
7615: #
7616: # Rewrite the contents of the user's passwd file.
7617: # Parameters:
7618: # domain - domain of the user.
7619: # name - User's name.
7620: # contents - New contents of the file.
7621: # Returns:
7622: # 0 - Failed.
7623: # 1 - Success.
7624: #
7625: sub rewrite_password_file {
7626: my ($domain, $user, $contents) = @_;
7627:
7628: my $file = &password_filename($domain, $user);
7629: if (defined $file) {
7630: my $pf = IO::File->new(">$file");
7631: if($pf) {
7632: print $pf "$contents\n";
7633: return 1;
7634: } else {
7635: return 0;
7636: }
7637: } else {
7638: return 0;
7639: }
7640:
7641: }
7642:
1.78 foxr 7643: #
1.222 foxr 7644: # get_auth_type - Determines the authorization type of a user in a domain.
1.78 foxr 7645:
7646: # Returns the authorization type or nouser if there is no such user.
7647: #
1.436 raeburn 7648: sub get_auth_type {
1.192 foxr 7649: my ($domain, $user) = @_;
1.78 foxr 7650:
1.222 foxr 7651: Debug("get_auth_type( $domain, $user ) \n");
1.78 foxr 7652: my $proname = &propath($domain, $user);
7653: my $passwdfile = "$proname/passwd";
7654: if( -e $passwdfile ) {
7655: my $pf = IO::File->new($passwdfile);
7656: my $realpassword = <$pf>;
7657: chomp($realpassword);
1.79 foxr 7658: Debug("Password info = $realpassword\n");
1.78 foxr 7659: my ($authtype, $contentpwd) = split(/:/, $realpassword);
1.79 foxr 7660: Debug("Authtype = $authtype, content = $contentpwd\n");
1.259 raeburn 7661: return "$authtype:$contentpwd";
1.224 foxr 7662: } else {
1.79 foxr 7663: Debug("Returning nouser");
1.78 foxr 7664: return "nouser";
7665: }
1.1 albertel 7666: }
7667:
1.220 foxr 7668: #
7669: # Validate a user given their domain, name and password. This utility
7670: # function is used by both AuthenticateHandler and ChangePasswordHandler
7671: # to validate the login credentials of a user.
7672: # Parameters:
7673: # $domain - The domain being logged into (this is required due to
7674: # the capability for multihomed systems.
7675: # $user - The name of the user being validated.
7676: # $password - The user's propoposed password.
7677: #
7678: # Returns:
7679: # 1 - The domain,user,pasword triplet corresponds to a valid
7680: # user.
7681: # 0 - The domain,user,password triplet is not a valid user.
7682: #
7683: sub validate_user {
1.396 raeburn 7684: my ($domain, $user, $password, $checkdefauth) = @_;
1.220 foxr 7685:
7686: # Why negative ~pi you may well ask? Well this function is about
7687: # authentication, and therefore very important to get right.
7688: # I've initialized the flag that determines whether or not I've
7689: # validated correctly to a value it's not supposed to get.
7690: # At the end of this function. I'll ensure that it's not still that
7691: # value so we don't just wind up returning some accidental value
7692: # as a result of executing an unforseen code path that
1.249 foxr 7693: # did not set $validated. At the end of valid execution paths,
7694: # validated shoule be 1 for success or 0 for failuer.
1.220 foxr 7695:
7696: my $validated = -3.14159;
7697:
7698: # How we authenticate is determined by the type of authentication
7699: # the user has been assigned. If the authentication type is
7700: # "nouser", the user does not exist so we will return 0.
7701:
1.222 foxr 7702: my $contents = &get_auth_type($domain, $user);
1.220 foxr 7703: my ($howpwd, $contentpwd) = split(/:/, $contents);
7704:
7705: my $null = pack("C",0); # Used by kerberos auth types.
7706:
1.395 raeburn 7707: if ($howpwd eq 'nouser') {
1.396 raeburn 7708: if ($checkdefauth) {
7709: my %domdefaults = &Apache::lonnet::get_domain_defaults($domain);
7710: if ($domdefaults{'auth_def'} eq 'localauth') {
7711: $howpwd = $domdefaults{'auth_def'};
7712: $contentpwd = $domdefaults{'auth_arg_def'};
7713: } elsif ((($domdefaults{'auth_def'} eq 'krb4') ||
7714: ($domdefaults{'auth_def'} eq 'krb5')) &&
7715: ($domdefaults{'auth_arg_def'} ne '')) {
7716: $howpwd = $domdefaults{'auth_def'};
7717: $contentpwd = $domdefaults{'auth_arg_def'};
7718: }
1.395 raeburn 7719: }
7720: }
1.220 foxr 7721: if ($howpwd ne 'nouser') {
7722: if($howpwd eq "internal") { # Encrypted is in local password file.
1.518 raeburn 7723: if (length($contentpwd) == 13) {
7724: $validated = (crypt($password,$contentpwd) eq $contentpwd);
7725: if ($validated) {
7726: my $ncpass = &hash_passwd($domain,$password);
7727: if (&rewrite_password_file($domain,$user,"$howpwd:$ncpass")) {
7728: &update_passwd_history($user,$domain,$howpwd,'conversion');
7729: &logthis("Validated password hashed with bcrypt for $user:$domain");
7730: }
7731: }
7732: } else {
7733: $validated = &check_internal_passwd($password,$contentpwd,$domain);
7734: }
1.220 foxr 7735: }
7736: elsif ($howpwd eq "unix") { # User is a normal unix user.
7737: $contentpwd = (getpwnam($user))[1];
7738: if($contentpwd) {
7739: if($contentpwd eq 'x') { # Shadow password file...
7740: my $pwauth_path = "/usr/local/sbin/pwauth";
7741: open PWAUTH, "|$pwauth_path" or
7742: die "Cannot invoke authentication";
7743: print PWAUTH "$user\n$password\n";
7744: close PWAUTH;
7745: $validated = ! $?;
7746:
7747: } else { # Passwords in /etc/passwd.
7748: $validated = (crypt($password,
7749: $contentpwd) eq $contentpwd);
7750: }
7751: } else {
7752: $validated = 0;
7753: }
1.439 raeburn 7754: } elsif ($howpwd eq "krb4") { # user is in kerberos 4 auth. domain.
7755: my $checkwithkrb5 = 0;
7756: if ($dist =~/^fedora(\d+)$/) {
7757: if ($1 > 11) {
7758: $checkwithkrb5 = 1;
7759: }
7760: } elsif ($dist =~ /^suse([\d.]+)$/) {
7761: if ($1 > 11.1) {
7762: $checkwithkrb5 = 1;
7763: }
7764: }
7765: if ($checkwithkrb5) {
7766: $validated = &krb5_authen($password,$null,$user,$contentpwd);
7767: } else {
7768: $validated = &krb4_authen($password,$null,$user,$contentpwd);
7769: }
1.224 foxr 7770: } elsif ($howpwd eq "krb5") { # User is in kerberos 5 auth. domain.
1.439 raeburn 7771: $validated = &krb5_authen($password,$null,$user,$contentpwd);
1.224 foxr 7772: } elsif ($howpwd eq "localauth") {
1.220 foxr 7773: # Authenticate via installation specific authentcation method:
7774: $validated = &localauth::localauth($user,
7775: $password,
1.353 albertel 7776: $contentpwd,
7777: $domain);
1.358 albertel 7778: if ($validated < 0) {
1.357 albertel 7779: &logthis("localauth for $contentpwd $user:$domain returned a $validated");
7780: $validated = 0;
7781: }
1.224 foxr 7782: } else { # Unrecognized auth is also bad.
1.220 foxr 7783: $validated = 0;
7784: }
7785: } else {
7786: $validated = 0;
7787: }
7788: #
7789: # $validated has the correct stat of the authentication:
7790: #
7791:
7792: unless ($validated != -3.14159) {
1.249 foxr 7793: # I >really really< want to know if this happens.
7794: # since it indicates that user authentication is badly
7795: # broken in some code path.
7796: #
7797: die "ValidateUser - failed to set the value of validated $domain, $user $password";
1.220 foxr 7798: }
7799: return $validated;
7800: }
7801:
1.518 raeburn 7802: sub check_internal_passwd {
7803: my ($plainpass,$stored,$domain) = @_;
7804: my (undef,$method,@rest) = split(/!/,$stored);
7805: if ($method eq "bcrypt") {
7806: my $result = &hash_passwd($domain,$plainpass,@rest);
7807: if ($result ne $stored) {
7808: return 0;
7809: }
7810: # Upgrade to a larger number of rounds if necessary
7811: my $defaultcost;
7812: my %domconfig =
7813: &Apache::lonnet::get_dom('configuration',['password'],$domain);
7814: if (ref($domconfig{'password'}) eq 'HASH') {
7815: $defaultcost = $domconfig{'password'}{'cost'};
7816: }
7817: if (($defaultcost eq '') || ($defaultcost =~ /D/)) {
7818: $defaultcost = 10;
7819: }
7820: return 1 unless($rest[0]<$defaultcost);
7821: }
7822: return 0;
7823: }
7824:
7825: sub get_last_authchg {
7826: my ($domain,$user) = @_;
7827: my $lastmod;
7828: my $logname = &propath($domain,$user).'/passwd.log';
7829: if (-e "$logname") {
7830: $lastmod = (stat("$logname"))[9];
7831: }
7832: return $lastmod;
7833: }
7834:
1.439 raeburn 7835: sub krb4_authen {
7836: my ($password,$null,$user,$contentpwd) = @_;
7837: my $validated = 0;
7838: if (!($password =~ /$null/) ) { # Null password not allowed.
7839: eval {
7840: require Authen::Krb4;
7841: };
7842: if (!$@) {
7843: my $k4error = &Authen::Krb4::get_pw_in_tkt($user,
7844: "",
7845: $contentpwd,,
7846: 'krbtgt',
7847: $contentpwd,
7848: 1,
7849: $password);
7850: if(!$k4error) {
7851: $validated = 1;
7852: } else {
7853: $validated = 0;
7854: &logthis('krb4: '.$user.', '.$contentpwd.', '.
7855: &Authen::Krb4::get_err_txt($Authen::Krb4::error));
7856: }
7857: } else {
7858: $validated = krb5_authen($password,$null,$user,$contentpwd);
7859: }
7860: }
7861: return $validated;
7862: }
7863:
7864: sub krb5_authen {
7865: my ($password,$null,$user,$contentpwd) = @_;
7866: my $validated = 0;
7867: if(!($password =~ /$null/)) { # Null password not allowed.
7868: my $krbclient = &Authen::Krb5::parse_name($user.'@'
7869: .$contentpwd);
7870: my $krbservice = "krbtgt/".$contentpwd."\@".$contentpwd;
7871: my $krbserver = &Authen::Krb5::parse_name($krbservice);
7872: my $credentials= &Authen::Krb5::cc_default();
7873: $credentials->initialize(&Authen::Krb5::parse_name($user.'@'
7874: .$contentpwd));
7875: my $krbreturn;
7876: if (exists(&Authen::Krb5::get_init_creds_password)) {
7877: $krbreturn =
7878: &Authen::Krb5::get_init_creds_password($krbclient,$password,
7879: $krbservice);
7880: $validated = (ref($krbreturn) eq 'Authen::Krb5::Creds');
7881: } else {
7882: $krbreturn =
7883: &Authen::Krb5::get_in_tkt_with_password($krbclient,$krbserver,
7884: $password,$credentials);
7885: $validated = ($krbreturn == 1);
7886: }
7887: if (!$validated) {
7888: &logthis('krb5: '.$user.', '.$contentpwd.', '.
7889: &Authen::Krb5::error());
7890: }
7891: }
7892: return $validated;
7893: }
1.220 foxr 7894:
1.84 albertel 7895: sub addline {
7896: my ($fname,$hostid,$ip,$newline)=@_;
7897: my $contents;
7898: my $found=0;
1.355 albertel 7899: my $expr='^'.quotemeta($hostid).':'.quotemeta($ip).':';
1.134 albertel 7900: my $sh;
1.84 albertel 7901: if ($sh=IO::File->new("$fname.subscription")) {
7902: while (my $subline=<$sh>) {
7903: if ($subline !~ /$expr/) {$contents.= $subline;} else {$found=1;}
7904: }
7905: $sh->close();
7906: }
7907: $sh=IO::File->new(">$fname.subscription");
7908: if ($contents) { print $sh $contents; }
7909: if ($newline) { print $sh $newline; }
7910: $sh->close();
7911: return $found;
1.86 www 7912: }
7913:
1.234 foxr 7914: sub get_chat {
1.324 raeburn 7915: my ($cdom,$cname,$udom,$uname,$group)=@_;
1.310 albertel 7916:
1.87 www 7917: my @entries=();
1.324 raeburn 7918: my $namespace = 'nohist_chatroom';
7919: my $namespace_inroom = 'nohist_inchatroom';
1.335 albertel 7920: if ($group ne '') {
1.324 raeburn 7921: $namespace .= '_'.$group;
7922: $namespace_inroom .= '_'.$group;
7923: }
7924: my $hashref = &tie_user_hash($cdom, $cname, $namespace,
1.310 albertel 7925: &GDBM_READER());
7926: if ($hashref) {
7927: @entries=map { $_.':'.$hashref->{$_} } sort(keys(%$hashref));
1.311 albertel 7928: &untie_user_hash($hashref);
1.123 www 7929: }
1.124 www 7930: my @participants=();
1.134 albertel 7931: my $cutoff=time-60;
1.324 raeburn 7932: $hashref = &tie_user_hash($cdom, $cname, $namespace_inroom,
1.310 albertel 7933: &GDBM_WRCREAT());
7934: if ($hashref) {
7935: $hashref->{$uname.':'.$udom}=time;
7936: foreach my $user (sort(keys(%$hashref))) {
7937: if ($hashref->{$user}>$cutoff) {
7938: push(@participants, 'active_participant:'.$user);
1.123 www 7939: }
7940: }
1.311 albertel 7941: &untie_user_hash($hashref);
1.86 www 7942: }
1.124 www 7943: return (@participants,@entries);
1.86 www 7944: }
7945:
1.234 foxr 7946: sub chat_add {
1.324 raeburn 7947: my ($cdom,$cname,$newchat,$group)=@_;
1.88 albertel 7948: my @entries=();
1.142 www 7949: my $time=time;
1.324 raeburn 7950: my $namespace = 'nohist_chatroom';
7951: my $logfile = 'chatroom.log';
1.335 albertel 7952: if ($group ne '') {
1.324 raeburn 7953: $namespace .= '_'.$group;
7954: $logfile = 'chatroom_'.$group.'.log';
7955: }
7956: my $hashref = &tie_user_hash($cdom, $cname, $namespace,
1.310 albertel 7957: &GDBM_WRCREAT());
7958: if ($hashref) {
7959: @entries=map { $_.':'.$hashref->{$_} } sort(keys(%$hashref));
1.88 albertel 7960: my ($lastid)=($entries[$#entries]=~/^(\w+)\:/);
7961: my ($thentime,$idnum)=split(/\_/,$lastid);
7962: my $newid=$time.'_000000';
7963: if ($thentime==$time) {
7964: $idnum=~s/^0+//;
7965: $idnum++;
7966: $idnum=substr('000000'.$idnum,-6,6);
7967: $newid=$time.'_'.$idnum;
7968: }
1.310 albertel 7969: $hashref->{$newid}=$newchat;
1.88 albertel 7970: my $expired=$time-3600;
1.310 albertel 7971: foreach my $comment (keys(%$hashref)) {
7972: my ($thistime) = ($comment=~/(\d+)\_/);
1.88 albertel 7973: if ($thistime<$expired) {
1.310 albertel 7974: delete $hashref->{$comment};
1.88 albertel 7975: }
7976: }
1.310 albertel 7977: {
7978: my $proname=&propath($cdom,$cname);
1.324 raeburn 7979: if (open(CHATLOG,">>$proname/$logfile")) {
1.310 albertel 7980: print CHATLOG ("$time:".&unescape($newchat)."\n");
7981: }
7982: close(CHATLOG);
1.142 www 7983: }
1.311 albertel 7984: &untie_user_hash($hashref);
1.86 www 7985: }
1.84 albertel 7986: }
7987:
7988: sub unsub {
7989: my ($fname,$clientip)=@_;
7990: my $result;
1.188 foxr 7991: my $unsubs = 0; # Number of successful unsubscribes:
7992:
7993:
7994: # An old way subscriptions were handled was to have a
7995: # subscription marker file:
7996:
7997: Debug("Attempting unlink of $fname.$clientname");
1.161 foxr 7998: if (unlink("$fname.$clientname")) {
1.188 foxr 7999: $unsubs++; # Successful unsub via marker file.
8000: }
8001:
8002: # The more modern way to do it is to have a subscription list
8003: # file:
8004:
1.84 albertel 8005: if (-e "$fname.subscription") {
1.161 foxr 8006: my $found=&addline($fname,$clientname,$clientip,'');
1.188 foxr 8007: if ($found) {
8008: $unsubs++;
8009: }
8010: }
8011:
8012: # If either or both of these mechanisms succeeded in unsubscribing a
8013: # resource we can return ok:
8014:
8015: if($unsubs) {
8016: $result = "ok\n";
1.84 albertel 8017: } else {
1.188 foxr 8018: $result = "not_subscribed\n";
1.84 albertel 8019: }
1.188 foxr 8020:
1.84 albertel 8021: return $result;
8022: }
8023:
1.101 www 8024: sub currentversion {
8025: my $fname=shift;
8026: my $version=-1;
8027: my $ulsdir='';
8028: if ($fname=~/^(.+)\/[^\/]+$/) {
8029: $ulsdir=$1;
8030: }
1.114 albertel 8031: my ($fnamere1,$fnamere2);
8032: # remove version if already specified
1.101 www 8033: $fname=~s/\.\d+\.(\w+(?:\.meta)*)$/\.$1/;
1.114 albertel 8034: # get the bits that go before and after the version number
8035: if ( $fname=~/^(.*\.)(\w+(?:\.meta)*)$/ ) {
8036: $fnamere1=$1;
8037: $fnamere2='.'.$2;
8038: }
1.101 www 8039: if (-e $fname) { $version=1; }
8040: if (-e $ulsdir) {
1.134 albertel 8041: if(-d $ulsdir) {
8042: if (opendir(LSDIR,$ulsdir)) {
8043: my $ulsfn;
8044: while ($ulsfn=readdir(LSDIR)) {
1.101 www 8045: # see if this is a regular file (ignore links produced earlier)
1.134 albertel 8046: my $thisfile=$ulsdir.'/'.$ulsfn;
8047: unless (-l $thisfile) {
1.160 www 8048: if ($thisfile=~/\Q$fnamere1\E(\d+)\Q$fnamere2\E$/) {
1.134 albertel 8049: if ($1>$version) { $version=$1; }
8050: }
8051: }
8052: }
8053: closedir(LSDIR);
8054: $version++;
8055: }
8056: }
8057: }
8058: return $version;
1.101 www 8059: }
8060:
8061: sub thisversion {
8062: my $fname=shift;
8063: my $version=-1;
8064: if ($fname=~/\.(\d+)\.\w+(?:\.meta)*$/) {
8065: $version=$1;
8066: }
8067: return $version;
8068: }
8069:
1.84 albertel 8070: sub subscribe {
8071: my ($userinput,$clientip)=@_;
8072: my $result;
1.293 albertel 8073: my ($cmd,$fname)=split(/:/,$userinput,2);
1.84 albertel 8074: my $ownership=&ishome($fname);
8075: if ($ownership eq 'owner') {
1.101 www 8076: # explitly asking for the current version?
8077: unless (-e $fname) {
8078: my $currentversion=¤tversion($fname);
8079: if (&thisversion($fname)==$currentversion) {
8080: if ($fname=~/^(.+)\.\d+\.(\w+(?:\.meta)*)$/) {
8081: my $root=$1;
8082: my $extension=$2;
8083: symlink($root.'.'.$extension,
8084: $root.'.'.$currentversion.'.'.$extension);
1.102 www 8085: unless ($extension=~/\.meta$/) {
8086: symlink($root.'.'.$extension.'.meta',
8087: $root.'.'.$currentversion.'.'.$extension.'.meta');
8088: }
1.101 www 8089: }
8090: }
8091: }
1.84 albertel 8092: if (-e $fname) {
8093: if (-d $fname) {
8094: $result="directory\n";
8095: } else {
1.161 foxr 8096: if (-e "$fname.$clientname") {&unsub($fname,$clientip);}
1.134 albertel 8097: my $now=time;
1.161 foxr 8098: my $found=&addline($fname,$clientname,$clientip,
8099: "$clientname:$clientip:$now\n");
1.84 albertel 8100: if ($found) { $result="$fname\n"; }
8101: # if they were subscribed to only meta data, delete that
8102: # subscription, when you subscribe to a file you also get
8103: # the metadata
8104: unless ($fname=~/\.meta$/) { &unsub("$fname.meta",$clientip); }
8105: $fname=~s/\/home\/httpd\/html\/res/raw/;
1.476 raeburn 8106: my $protocol = $Apache::lonnet::protocol{$perlvar{'lonHostID'}};
8107: $protocol = 'http' if ($protocol ne 'https');
8108: $fname=$protocol.'://'.&Apache::lonnet::hostname($perlvar{'lonHostID'})."/".$fname;
1.84 albertel 8109: $result="$fname\n";
8110: }
8111: } else {
8112: $result="not_found\n";
8113: }
8114: } else {
8115: $result="rejected\n";
8116: }
8117: return $result;
8118: }
1.287 foxr 8119: # Change the passwd of a unix user. The caller must have
8120: # first verified that the user is a loncapa user.
8121: #
8122: # Parameters:
8123: # user - Unix user name to change.
8124: # pass - New password for the user.
8125: # Returns:
8126: # ok - if success
8127: # other - Some meaningfule error message string.
8128: # NOTE:
8129: # invokes a setuid script to change the passwd.
8130: sub change_unix_password {
8131: my ($user, $pass) = @_;
8132:
8133: &Debug("change_unix_password");
8134: my $execdir=$perlvar{'lonDaemons'};
8135: &Debug("Opening lcpasswd pipeline");
8136: my $pf = IO::File->new("|$execdir/lcpasswd > "
8137: ."$perlvar{'lonDaemons'}"
8138: ."/logs/lcpasswd.log");
8139: print $pf "$user\n$pass\n$pass\n";
8140: close $pf;
8141: my $err = $?;
8142: return ($err < @passwderrors) ? $passwderrors[$err] :
8143: "pwchange_falure - unknown error";
8144:
8145:
8146: }
8147:
1.91 albertel 8148:
8149: sub make_passwd_file {
1.518 raeburn 8150: my ($uname,$udom,$umode,$npass,$passfilename,$action)=@_;
1.390 raeburn 8151: my $result="ok";
1.91 albertel 8152: if ($umode eq 'krb4' or $umode eq 'krb5') {
8153: {
8154: my $pf = IO::File->new(">$passfilename");
1.261 foxr 8155: if ($pf) {
8156: print $pf "$umode:$npass\n";
1.518 raeburn 8157: &update_passwd_history($uname,$udom,$umode,$action);
1.261 foxr 8158: } else {
8159: $result = "pass_file_failed_error";
8160: }
1.91 albertel 8161: }
8162: } elsif ($umode eq 'internal') {
1.518 raeburn 8163: my $ncpass = &hash_passwd($udom,$npass);
1.91 albertel 8164: {
8165: &Debug("Creating internal auth");
8166: my $pf = IO::File->new(">$passfilename");
1.261 foxr 8167: if($pf) {
1.518 raeburn 8168: print $pf "internal:$ncpass\n";
8169: &update_passwd_history($uname,$udom,$umode,$action);
1.261 foxr 8170: } else {
8171: $result = "pass_file_failed_error";
8172: }
1.91 albertel 8173: }
8174: } elsif ($umode eq 'localauth') {
8175: {
8176: my $pf = IO::File->new(">$passfilename");
1.261 foxr 8177: if($pf) {
8178: print $pf "localauth:$npass\n";
1.524 raeburn 8179: &update_passwd_history($uname,$udom,$umode,$action);
1.261 foxr 8180: } else {
8181: $result = "pass_file_failed_error";
8182: }
1.91 albertel 8183: }
8184: } elsif ($umode eq 'unix') {
1.502 raeburn 8185: &logthis(">>>Attempt to create unix account blocked -- unix auth not available for new users.");
8186: $result="no_new_unix_accounts";
1.91 albertel 8187: } elsif ($umode eq 'none') {
8188: {
1.223 foxr 8189: my $pf = IO::File->new("> $passfilename");
1.261 foxr 8190: if($pf) {
8191: print $pf "none:\n";
8192: } else {
8193: $result = "pass_file_failed_error";
8194: }
1.91 albertel 8195: }
8196: } else {
1.390 raeburn 8197: $result="auth_mode_error";
1.91 albertel 8198: }
8199: return $result;
1.121 albertel 8200: }
8201:
1.265 albertel 8202: sub convert_photo {
8203: my ($start,$dest)=@_;
8204: system("convert $start $dest");
8205: }
8206:
1.121 albertel 8207: sub sethost {
8208: my ($remotereq) = @_;
8209: my (undef,$hostid)=split(/:/,$remotereq);
1.322 albertel 8210: # ignore sethost if we are already correct
8211: if ($hostid eq $currenthostid) {
8212: return 'ok';
8213: }
8214:
1.121 albertel 8215: if (!defined($hostid)) { $hostid=$perlvar{'lonHostID'}; }
1.368 albertel 8216: if (&Apache::lonnet::get_host_ip($perlvar{'lonHostID'})
8217: eq &Apache::lonnet::get_host_ip($hostid)) {
1.200 matthew 8218: $currenthostid =$hostid;
1.369 albertel 8219: $currentdomainid=&Apache::lonnet::host_domain($hostid);
1.443 www 8220: # &logthis("Setting hostid to $hostid, and domain to $currentdomainid");
1.121 albertel 8221: } else {
8222: &logthis("Requested host id $hostid not an alias of ".
8223: $perlvar{'lonHostID'}." refusing connection");
8224: return 'unable_to_set';
8225: }
8226: return 'ok';
8227: }
8228:
8229: sub version {
8230: my ($userinput)=@_;
8231: $remoteVERSION=(split(/:/,$userinput))[1];
8232: return "version:$VERSION";
1.127 albertel 8233: }
1.178 foxr 8234:
1.447 raeburn 8235: sub get_usersession_config {
8236: my ($dom,$name) = @_;
8237: my ($usersessionconf,$cached)=&Apache::lonnet::is_cached_new($name,$dom);
8238: if (defined($cached)) {
8239: return $usersessionconf;
8240: } else {
8241: my %domconfig = &Apache::lonnet::get_dom('configuration',['usersessions'],$dom);
1.525 raeburn 8242: &Apache::lonnet::do_cache_new($name,$dom,$domconfig{'usersessions'},3600);
8243: return $domconfig{'usersessions'};
1.447 raeburn 8244: }
8245: return;
8246: }
1.200 matthew 8247:
1.525 raeburn 8248: sub get_prohibited {
8249: my ($dom) = @_;
8250: my $name = 'trust';
8251: my ($trustconfig,$cached)=&Apache::lonnet::is_cached_new($name,$dom);
8252: unless (defined($cached)) {
8253: my %domconfig = &Apache::lonnet::get_dom('configuration',['trust'],$dom);
8254: &Apache::lonnet::do_cache_new($name,$dom,$domconfig{'trust'},3600);
8255: $trustconfig = $domconfig{'trust'};
8256: }
8257: my %prohibited;
8258: if (ref($trustconfig)) {
8259: foreach my $prefix (keys(%{$trustconfig})) {
8260: if (ref($trustconfig->{$prefix}) eq 'HASH') {
8261: my $reject;
8262: if (ref($trustconfig->{$prefix}->{'exc'}) eq 'ARRAY') {
8263: if (grep(/^\Q$clientintdom\E$/,@{$trustconfig->{$prefix}->{'exc'}})) {
8264: $reject = 1;
8265: }
8266: }
8267: if (ref($trustconfig->{$prefix}->{'inc'}) eq 'ARRAY') {
8268: if (grep(/^\Q$clientintdom\E$/,@{$trustconfig->{$prefix}->{'inc'}})) {
8269: $reject = 0;
8270: } else {
8271: $reject = 1;
8272: }
8273: }
8274: if ($reject) {
8275: $prohibited{$prefix} = 1;
8276: }
8277: }
8278: }
8279: }
8280: return %prohibited;
8281: }
1.450 raeburn 8282:
1.471 raeburn 8283: sub distro_and_arch {
8284: return $dist.':'.$arch;
8285: }
8286:
1.61 harris41 8287: # ----------------------------------- POD (plain old documentation, CPAN style)
8288:
8289: =head1 NAME
8290:
8291: lond - "LON Daemon" Server (port "LOND" 5663)
8292:
8293: =head1 SYNOPSIS
8294:
1.74 harris41 8295: Usage: B<lond>
8296:
8297: Should only be run as user=www. This is a command-line script which
8298: is invoked by B<loncron>. There is no expectation that a typical user
8299: will manually start B<lond> from the command-line. (In other words,
8300: DO NOT START B<lond> YOURSELF.)
1.61 harris41 8301:
8302: =head1 DESCRIPTION
8303:
1.74 harris41 8304: There are two characteristics associated with the running of B<lond>,
8305: PROCESS MANAGEMENT (starting, stopping, handling child processes)
8306: and SERVER-SIDE ACTIVITIES (password authentication, user creation,
8307: subscriptions, etc). These are described in two large
8308: sections below.
8309:
8310: B<PROCESS MANAGEMENT>
8311:
1.61 harris41 8312: Preforker - server who forks first. Runs as a daemon. HUPs.
8313: Uses IDEA encryption
8314:
1.74 harris41 8315: B<lond> forks off children processes that correspond to the other servers
8316: in the network. Management of these processes can be done at the
8317: parent process level or the child process level.
8318:
8319: B<logs/lond.log> is the location of log messages.
8320:
8321: The process management is now explained in terms of linux shell commands,
8322: subroutines internal to this code, and signal assignments:
8323:
8324: =over 4
8325:
8326: =item *
8327:
8328: PID is stored in B<logs/lond.pid>
8329:
8330: This is the process id number of the parent B<lond> process.
8331:
8332: =item *
8333:
8334: SIGTERM and SIGINT
8335:
8336: Parent signal assignment:
8337: $SIG{INT} = $SIG{TERM} = \&HUNTSMAN;
8338:
8339: Child signal assignment:
8340: $SIG{INT} = 'DEFAULT'; (and SIGTERM is DEFAULT also)
8341: (The child dies and a SIGALRM is sent to parent, awaking parent from slumber
8342: to restart a new child.)
8343:
8344: Command-line invocations:
8345: B<kill> B<-s> SIGTERM I<PID>
8346: B<kill> B<-s> SIGINT I<PID>
8347:
8348: Subroutine B<HUNTSMAN>:
8349: This is only invoked for the B<lond> parent I<PID>.
8350: This kills all the children, and then the parent.
8351: The B<lonc.pid> file is cleared.
8352:
8353: =item *
8354:
8355: SIGHUP
8356:
8357: Current bug:
8358: This signal can only be processed the first time
8359: on the parent process. Subsequent SIGHUP signals
8360: have no effect.
8361:
8362: Parent signal assignment:
8363: $SIG{HUP} = \&HUPSMAN;
8364:
8365: Child signal assignment:
8366: none (nothing happens)
8367:
8368: Command-line invocations:
8369: B<kill> B<-s> SIGHUP I<PID>
8370:
8371: Subroutine B<HUPSMAN>:
8372: This is only invoked for the B<lond> parent I<PID>,
8373: This kills all the children, and then the parent.
8374: The B<lond.pid> file is cleared.
8375:
8376: =item *
8377:
8378: SIGUSR1
8379:
8380: Parent signal assignment:
8381: $SIG{USR1} = \&USRMAN;
8382:
8383: Child signal assignment:
8384: $SIG{USR1}= \&logstatus;
8385:
8386: Command-line invocations:
8387: B<kill> B<-s> SIGUSR1 I<PID>
8388:
8389: Subroutine B<USRMAN>:
8390: When invoked for the B<lond> parent I<PID>,
8391: SIGUSR1 is sent to all the children, and the status of
8392: each connection is logged.
1.144 foxr 8393:
8394: =item *
8395:
8396: SIGUSR2
8397:
8398: Parent Signal assignment:
8399: $SIG{USR2} = \&UpdateHosts
8400:
8401: Child signal assignment:
8402: NONE
8403:
1.74 harris41 8404:
8405: =item *
8406:
8407: SIGCHLD
8408:
8409: Parent signal assignment:
8410: $SIG{CHLD} = \&REAPER;
8411:
8412: Child signal assignment:
8413: none
8414:
8415: Command-line invocations:
8416: B<kill> B<-s> SIGCHLD I<PID>
8417:
8418: Subroutine B<REAPER>:
8419: This is only invoked for the B<lond> parent I<PID>.
8420: Information pertaining to the child is removed.
8421: The socket port is cleaned up.
8422:
8423: =back
8424:
8425: B<SERVER-SIDE ACTIVITIES>
8426:
8427: Server-side information can be accepted in an encrypted or non-encrypted
8428: method.
8429:
8430: =over 4
8431:
8432: =item ping
8433:
8434: Query a client in the hosts.tab table; "Are you there?"
8435:
8436: =item pong
8437:
8438: Respond to a ping query.
8439:
8440: =item ekey
8441:
8442: Read in encrypted key, make cipher. Respond with a buildkey.
8443:
8444: =item load
8445:
8446: Respond with CPU load based on a computation upon /proc/loadavg.
8447:
8448: =item currentauth
8449:
8450: Reply with current authentication information (only over an
8451: encrypted channel).
8452:
8453: =item auth
8454:
8455: Only over an encrypted channel, reply as to whether a user's
8456: authentication information can be validated.
8457:
8458: =item passwd
8459:
8460: Allow for a password to be set.
8461:
8462: =item makeuser
8463:
8464: Make a user.
8465:
1.517 raeburn 8466: =item changeuserauth
1.74 harris41 8467:
8468: Allow for authentication mechanism and password to be changed.
8469:
8470: =item home
1.61 harris41 8471:
1.74 harris41 8472: Respond to a question "are you the home for a given user?"
8473:
8474: =item update
8475:
8476: Update contents of a subscribed resource.
8477:
8478: =item unsubscribe
8479:
8480: The server is unsubscribing from a resource.
8481:
8482: =item subscribe
8483:
8484: The server is subscribing to a resource.
8485:
8486: =item log
8487:
8488: Place in B<logs/lond.log>
8489:
8490: =item put
8491:
8492: stores hash in namespace
8493:
1.496 raeburn 8494: =item rolesput
1.74 harris41 8495:
8496: put a role into a user's environment
8497:
8498: =item get
8499:
8500: returns hash with keys from array
8501: reference filled in from namespace
8502:
8503: =item eget
8504:
8505: returns hash with keys from array
8506: reference filled in from namesp (encrypts the return communication)
8507:
8508: =item rolesget
8509:
8510: get a role from a user's environment
8511:
8512: =item del
8513:
8514: deletes keys out of array from namespace
8515:
8516: =item keys
8517:
8518: returns namespace keys
8519:
8520: =item dump
8521:
8522: dumps the complete (or key matching regexp) namespace into a hash
8523:
8524: =item store
8525:
8526: stores hash permanently
8527: for this url; hashref needs to be given and should be a \%hashname; the
8528: remaining args aren't required and if they aren't passed or are '' they will
8529: be derived from the ENV
8530:
8531: =item restore
8532:
8533: returns a hash for a given url
8534:
8535: =item querysend
8536:
8537: Tells client about the lonsql process that has been launched in response
8538: to a sent query.
8539:
8540: =item queryreply
8541:
8542: Accept information from lonsql and make appropriate storage in temporary
8543: file space.
8544:
8545: =item idput
8546:
8547: Defines usernames as corresponding to IDs. (These "IDs" are unique identifiers
8548: for each student, defined perhaps by the institutional Registrar.)
8549:
8550: =item idget
8551:
8552: Returns usernames corresponding to IDs. (These "IDs" are unique identifiers
8553: for each student, defined perhaps by the institutional Registrar.)
8554:
1.517 raeburn 8555: =item iddel
8556:
8557: Deletes one or more ids in a domain's id database.
8558:
1.74 harris41 8559: =item tmpput
8560:
8561: Accept and store information in temporary space.
8562:
8563: =item tmpget
8564:
8565: Send along temporarily stored information.
8566:
8567: =item ls
8568:
8569: List part of a user's directory.
8570:
1.135 foxr 8571: =item pushtable
8572:
8573: Pushes a file in /home/httpd/lonTab directory. Currently limited to:
8574: hosts.tab and domain.tab. The old file is copied to *.tab.backup but
8575: must be restored manually in case of a problem with the new table file.
8576: pushtable requires that the request be encrypted and validated via
8577: ValidateManager. The form of the command is:
8578: enc:pushtable tablename <tablecontents> \n
8579: where pushtable, tablename and <tablecontents> will be encrypted, but \n is a
8580: cleartext newline.
8581:
1.74 harris41 8582: =item Hanging up (exit or init)
8583:
8584: What to do when a client tells the server that they (the client)
8585: are leaving the network.
8586:
8587: =item unknown command
8588:
8589: If B<lond> is sent an unknown command (not in the list above),
8590: it replys to the client "unknown_cmd".
1.135 foxr 8591:
1.74 harris41 8592:
8593: =item UNKNOWN CLIENT
8594:
8595: If the anti-spoofing algorithm cannot verify the client,
8596: the client is rejected (with a "refused" message sent
8597: to the client, and the connection is closed.
8598:
8599: =back
1.61 harris41 8600:
8601: =head1 PREREQUISITES
8602:
8603: IO::Socket
8604: IO::File
8605: Apache::File
8606: POSIX
8607: Crypt::IDEA
8608: LWP::UserAgent()
8609: GDBM_File
8610: Authen::Krb4
1.91 albertel 8611: Authen::Krb5
1.61 harris41 8612:
8613: =head1 COREQUISITES
8614:
1.490 droeschl 8615: none
8616:
1.61 harris41 8617: =head1 OSNAMES
8618:
8619: linux
8620:
8621: =head1 SCRIPT CATEGORIES
8622:
8623: Server/Process
8624:
8625: =cut
1.409 foxr 8626:
8627:
8628: =pod
8629:
8630: =head1 LOG MESSAGES
8631:
8632: The messages below can be emitted in the lond log. This log is located
8633: in ~httpd/perl/logs/lond.log Many log messages have HTML encapsulation
8634: to provide coloring if examined from inside a web page. Some do not.
8635: Where color is used, the colors are; Red for sometihhng to get excited
8636: about and to follow up on. Yellow for something to keep an eye on to
8637: be sure it does not get worse, Green,and Blue for informational items.
8638:
8639: In the discussions below, sometimes reference is made to ~httpd
8640: when describing file locations. There isn't really an httpd
8641: user, however there is an httpd directory that gets installed in the
8642: place that user home directories go. On linux, this is usually
8643: (always?) /home/httpd.
8644:
8645:
8646: Some messages are colorless. These are usually (not always)
8647: Green/Blue color level messages.
8648:
8649: =over 2
8650:
8651: =item (Red) LocalConnection rejecting non local: <ip> ne 127.0.0.1
8652:
8653: A local connection negotiation was attempted by
8654: a host whose IP address was not 127.0.0.1.
8655: The socket is closed and the child will exit.
8656: lond has three ways to establish an encyrption
8657: key with a client:
8658:
8659: =over 2
8660:
8661: =item local
8662:
8663: The key is written and read from a file.
8664: This is only valid for connections from localhost.
8665:
8666: =item insecure
8667:
8668: The key is generated by the server and
8669: transmitted to the client.
8670:
8671: =item ssl (secure)
8672:
8673: An ssl connection is negotiated with the client,
8674: the key is generated by the server and sent to the
8675: client across this ssl connection before the
8676: ssl connectionis terminated and clear text
8677: transmission resumes.
8678:
8679: =back
8680:
8681: =item (Red) LocalConnection: caller is insane! init = <init> and type = <type>
8682:
8683: The client is local but has not sent an initialization
8684: string that is the literal "init:local" The connection
8685: is closed and the child exits.
8686:
8687: =item Red CRITICAL Can't get key file <error>
8688:
8689: SSL key negotiation is being attempted but the call to
8690: lonssl::KeyFile failed. This usually means that the
8691: configuration file is not correctly defining or protecting
8692: the directories/files lonCertificateDirectory or
8693: lonnetPrivateKey
8694: <error> is a string that describes the reason that
8695: the key file could not be located.
8696:
8697: =item (Red) CRITICAL Can't get certificates <error>
8698:
8699: SSL key negotiation failed because we were not able to retrives our certificate
8700: or the CA's certificate in the call to lonssl::CertificateFile
8701: <error> is the textual reason this failed. Usual reasons:
8702:
8703: =over 2
1.490 droeschl 8704:
1.409 foxr 8705: =item Apache config file for loncapa incorrect:
1.490 droeschl 8706:
1.409 foxr 8707: one of the variables
8708: lonCertificateDirectory, lonnetCertificateAuthority, or lonnetCertificate
8709: undefined or incorrect
8710:
8711: =item Permission error:
8712:
8713: The directory pointed to by lonCertificateDirectory is not readable by lond
8714:
8715: =item Permission error:
8716:
8717: Files in the directory pointed to by lonCertificateDirectory are not readable by lond.
8718:
8719: =item Installation error:
8720:
8721: Either the certificate authority file or the certificate have not
8722: been installed in lonCertificateDirectory.
8723:
8724: =item (Red) CRITICAL SSL Socket promotion failed: <err>
8725:
8726: The promotion of the connection from plaintext to SSL failed
8727: <err> is the reason for the failure. There are two
8728: system calls involved in the promotion (one of which failed),
8729: a dup to produce
8730: a second fd on the raw socket over which the encrypted data
8731: will flow and IO::SOcket::SSL->new_from_fd which creates
8732: the SSL connection on the duped fd.
8733:
8734: =item (Blue) WARNING client did not respond to challenge
8735:
8736: This occurs on an insecure (non SSL) connection negotiation request.
8737: lond generates some number from the time, the PID and sends it to
8738: the client. The client must respond by echoing this information back.
8739: If the client does not do so, that's a violation of the challenge
8740: protocols and the connection will be failed.
8741:
8742: =item (Red) No manager table. Nobody can manage!!
8743:
8744: lond has the concept of privileged hosts that
8745: can perform remote management function such
8746: as update the hosts.tab. The manager hosts
8747: are described in the
8748: ~httpd/lonTabs/managers.tab file.
8749: this message is logged if this file is missing.
8750:
8751:
8752: =item (Green) Registering manager <dnsname> as <cluster_name> with <ipaddress>
8753:
8754: Reports the successful parse and registration
8755: of a specific manager.
8756:
8757: =item Green existing host <clustername:dnsname>
8758:
8759: The manager host is already defined in the hosts.tab
8760: the information in that table, rather than the info in the
8761: manager table will be used to determine the manager's ip.
8762:
8763: =item (Red) Unable to craete <filename>
8764:
8765: lond has been asked to create new versions of an administrative
8766: file (by a manager). When this is done, the new file is created
8767: in a temp file and then renamed into place so that there are always
8768: usable administrative files, even if the update fails. This failure
8769: message means that the temp file could not be created.
8770: The update is abandoned, and the old file is available for use.
8771:
8772: =item (Green) CopyFile from <oldname> to <newname> failed
8773:
8774: In an update of administrative files, the copy of the existing file to a
8775: backup file failed. The installation of the new file may still succeed,
8776: but there will not be a back up file to rever to (this should probably
8777: be yellow).
8778:
8779: =item (Green) Pushfile: backed up <oldname> to <newname>
8780:
8781: See above, the backup of the old administrative file succeeded.
8782:
8783: =item (Red) Pushfile: Unable to install <filename> <reason>
8784:
8785: The new administrative file could not be installed. In this case,
8786: the old administrative file is still in use.
8787:
8788: =item (Green) Installed new < filename>.
8789:
8790: The new administrative file was successfullly installed.
8791:
8792: =item (Red) Reinitializing lond pid=<pid>
8793:
8794: The lonc child process <pid> will be sent a USR2
8795: signal.
8796:
8797: =item (Red) Reinitializing self
8798:
8799: We've been asked to re-read our administrative files,and
8800: are doing so.
8801:
8802: =item (Yellow) error:Invalid process identifier <ident>
8803:
8804: A reinit command was received, but the target part of the
8805: command was not valid. It must be either
8806: 'lond' or 'lonc' but was <ident>
8807:
8808: =item (Green) isValideditCommand checking: Command = <command> Key = <key> newline = <newline>
8809:
8810: Checking to see if lond has been handed a valid edit
8811: command. It is possible the edit command is not valid
8812: in that case there are no log messages to indicate that.
8813:
8814: =item Result of password change for <username> pwchange_success
8815:
8816: The password for <username> was
8817: successfully changed.
8818:
8819: =item Unable to open <user> passwd to change password
8820:
8821: Could not rewrite the
8822: internal password file for a user
8823:
8824: =item Result of password change for <user> : <result>
1.490 droeschl 8825:
1.409 foxr 8826: A unix password change for <user> was attempted
8827: and the pipe returned <result>
8828:
8829: =item LWP GET: <message> for <fname> (<remoteurl>)
8830:
8831: The lightweight process fetch for a resource failed
8832: with <message> the local filename that should
8833: have existed/been created was <fname> the
8834: corresponding URI: <remoteurl> This is emitted in several
8835: places.
8836:
8837: =item Unable to move <transname> to <destname>
8838:
8839: From fetch_user_file_handler - the user file was replicated but could not
8840: be mv'd to its final location.
8841:
8842: =item Looking for <domain> <username>
8843:
8844: From user_has_session_handler - This should be a Debug call instead
8845: it indicates lond is about to check whether the specified user has a
8846: session active on the specified domain on the local host.
8847:
8848: =item Client <ip> (<name>) hanging up: <input>
8849:
8850: lond has been asked to exit by its client. The <ip> and <name> identify the
8851: client systemand <input> is the full exit command sent to the server.
8852:
8853: =item Red CRITICAL: ABNORMAL EXIT. child <pid> for server <hostname> died through a crass with this error->[<message>].
1.490 droeschl 8854:
1.409 foxr 8855: A lond child terminated. NOte that this termination can also occur when the
8856: child receives the QUIT or DIE signals. <pid> is the process id of the child,
8857: <hostname> the host lond is working for, and <message> the reason the child died
8858: to the best of our ability to get it (I would guess that any numeric value
8859: represents and errno value). This is immediately followed by
8860:
8861: =item Famous last words: Catching exception - <log>
8862:
8863: Where log is some recent information about the state of the child.
8864:
8865: =item Red CRITICAL: TIME OUT <pid>
8866:
8867: Some timeout occured for server <pid>. THis is normally a timeout on an LWP
8868: doing an HTTP::GET.
8869:
8870: =item child <pid> died
8871:
8872: The reaper caught a SIGCHILD for the lond child process <pid>
8873: This should be modified to also display the IP of the dying child
8874: $children{$pid}
8875:
8876: =item Unknown child 0 died
8877: A child died but the wait for it returned a pid of zero which really should not
8878: ever happen.
8879:
8880: =item Child <which> - <pid> looks like we missed it's death
8881:
8882: When a sigchild is received, the reaper process checks all children to see if they are
8883: alive. If children are dying quite quickly, the lack of signal queuing can mean
8884: that a signal hearalds the death of more than one child. If so this message indicates
8885: which other one died. <which> is the ip of a dead child
8886:
8887: =item Free socket: <shutdownretval>
8888:
8889: The HUNTSMAN sub was called due to a SIGINT in a child process. The socket is being shutdown.
8890: for whatever reason, <shutdownretval> is printed but in fact shutdown() is not documented
8891: to return anything. This is followed by:
8892:
8893: =item Red CRITICAL: Shutting down
8894:
8895: Just prior to exit.
8896:
8897: =item Free socket: <shutdownretval>
8898:
8899: The HUPSMAN sub was called due to a SIGHUP. all children get killsed, and lond execs itself.
8900: This is followed by:
8901:
8902: =item (Red) CRITICAL: Restarting
8903:
8904: lond is about to exec itself to restart.
8905:
8906: =item (Blue) Updating connections
8907:
8908: (In response to a USR2). All the children (except the one for localhost)
8909: are about to be killed, the hosts tab reread, and Apache reloaded via apachereload.
8910:
8911: =item (Blue) UpdateHosts killing child <pid> for ip <ip>
8912:
8913: Due to USR2 as above.
8914:
8915: =item (Green) keeping child for ip <ip> (pid = <pid>)
8916:
8917: In response to USR2 as above, the child indicated is not being restarted because
8918: it's assumed that we'll always need a child for the localhost.
8919:
8920:
8921: =item Going to check on the children
8922:
8923: Parent is about to check on the health of the child processes.
8924: Note that this is in response to a USR1 sent to the parent lond.
8925: there may be one or more of the next two messages:
8926:
8927: =item <pid> is dead
8928:
8929: A child that we have in our child hash as alive has evidently died.
8930:
8931: =item Child <pid> did not respond
8932:
8933: In the health check the child <pid> did not update/produce a pid_.txt
8934: file when sent it's USR1 signal. That process is killed with a 9 signal, as it's
8935: assumed to be hung in some un-fixable way.
8936:
8937: =item Finished checking children
1.490 droeschl 8938:
1.409 foxr 8939: Master processs's USR1 processing is cojmplete.
8940:
8941: =item (Red) CRITICAL: ------- Starting ------
8942:
8943: (There are more '-'s on either side). Lond has forked itself off to
8944: form a new session and is about to start actual initialization.
8945:
8946: =item (Green) Attempting to start child (<client>)
8947:
8948: Started a new child process for <client>. Client is IO::Socket object
8949: connected to the child. This was as a result of a TCP/IP connection from a client.
8950:
8951: =item Unable to determine who caller was, getpeername returned nothing
1.490 droeschl 8952:
1.409 foxr 8953: In child process initialization. either getpeername returned undef or
8954: a zero sized object was returned. Processing continues, but in my opinion,
8955: this should be cause for the child to exit.
8956:
8957: =item Unable to determine clientip
8958:
8959: In child process initialization. The peer address from getpeername was not defined.
8960: The client address is stored as "Unavailable" and processing continues.
8961:
8962: =item (Yellow) INFO: Connection <ip> <name> connection type = <type>
1.490 droeschl 8963:
1.409 foxr 8964: In child initialization. A good connectionw as received from <ip>.
8965:
8966: =over 2
8967:
8968: =item <name>
8969:
8970: is the name of the client from hosts.tab.
8971:
8972: =item <type>
8973:
8974: Is the connection type which is either
8975:
8976: =over 2
8977:
8978: =item manager
8979:
8980: The connection is from a manager node, not in hosts.tab
8981:
8982: =item client
8983:
8984: the connection is from a non-manager in the hosts.tab
8985:
8986: =item both
8987:
8988: The connection is from a manager in the hosts.tab.
8989:
8990: =back
8991:
8992: =back
8993:
8994: =item (Blue) Certificates not installed -- trying insecure auth
8995:
8996: One of the certificate file, key file or
8997: certificate authority file could not be found for a client attempting
8998: SSL connection intiation. COnnection will be attemptied in in-secure mode.
8999: (this would be a system with an up to date lond that has not gotten a
9000: certificate from us).
9001:
9002: =item (Green) Successful local authentication
9003:
9004: A local connection successfully negotiated the encryption key.
9005: In this case the IDEA key is in a file (that is hopefully well protected).
9006:
9007: =item (Green) Successful ssl authentication with <client>
9008:
9009: The client (<client> is the peer's name in hosts.tab), has successfully
9010: negotiated an SSL connection with this child process.
9011:
9012: =item (Green) Successful insecure authentication with <client>
1.490 droeschl 9013:
1.409 foxr 9014:
9015: The client has successfully negotiated an insecure connection withthe child process.
9016:
9017: =item (Yellow) Attempted insecure connection disallowed
9018:
9019: The client attempted and failed to successfully negotiate a successful insecure
9020: connection. This can happen either because the variable londAllowInsecure is false
9021: or undefined, or becuse the child did not successfully echo back the challenge
9022: string.
9023:
9024:
9025: =back
9026:
1.441 raeburn 9027: =back
9028:
1.409 foxr 9029:
9030: =cut
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