1: #!/usr/bin/perl
2: # The LearningOnline Network
3: # lond "LON Daemon" Server (port "LOND" 5663)
4: #
5: # $Id: lond,v 1.576 2022/07/25 23:31:40 raeburn Exp $
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
13: # the Free Software Foundation; either version 2 of the License, or
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
23: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
24: #
25: # /home/httpd/html/adm/gpl.txt
26: #
27:
28:
29: # http://www.lon-capa.org/
30: #
31:
32: use strict;
33: use lib '/home/httpd/lib/perl/';
34: use LONCAPA;
35: use LONCAPA::Configuration;
36: use LONCAPA::Lond;
37:
38: use Socket;
39: use IO::Socket;
40: use IO::File;
41: #use Apache::File;
42: use POSIX;
43: use Crypt::IDEA;
44: use HTTP::Request;
45: use Digest::MD5 qw(md5_hex);
46: use GDBM_File;
47: use Authen::Krb5;
48: use localauth;
49: use localenroll;
50: use localstudentphoto;
51: use File::Copy;
52: use File::Find;
53: use LONCAPA::lonlocal;
54: use LONCAPA::lonssl;
55: use Fcntl qw(:flock);
56: use Apache::lonnet;
57: use Mail::Send;
58: use Crypt::Eksblowfish::Bcrypt;
59: use Digest::SHA;
60: use Encode;
61: use LONCAPA::LWPReq;
62:
63: my $DEBUG = 0; # Non zero to enable debug log entries.
64:
65: my $status='';
66: my $lastlog='';
67:
68: my $VERSION='$Revision: 1.576 $'; #' stupid emacs
69: my $remoteVERSION;
70: my $currenthostid="default";
71: my $currentdomainid;
72:
73: my $client;
74: my $clientip; # IP address of client.
75: my $clientname; # LonCAPA name of client.
76: my $clientversion; # LonCAPA version running on client.
77: my $clienthomedom; # LonCAPA domain of homeID for client.
78: my $clientintdom; # LonCAPA "internet domain" for client.
79: my $clientsamedom; # LonCAPA domain same for this host
80: # and client.
81: my $clientsameinst; # LonCAPA "internet domain" same for
82: # this host and client.
83: my $clientremoteok; # Current domain permits hosting on client
84: # (not set if host and client share "internet domain").
85: # Values are 0 or 1; 1 if allowed.
86: my %clientprohibited; # Commands from client prohibited for domain's
87: # users.
88:
89: my $server;
90:
91: my $keymode;
92:
93: my $cipher; # Cipher key negotiated with client
94: my $tmpsnum = 0; # Id of tmpputs.
95:
96: #
97: # Connection type is:
98: # client - All client actions are allowed
99: # manager - only management functions allowed.
100: # both - Both management and client actions are allowed
101: #
102:
103: my $ConnectionType;
104:
105: my %managers; # Ip -> manager names
106:
107: my %perlvar; # Will have the apache conf defined perl vars.
108:
109: my %secureconf; # Will have requirements for security
110: # of lond connections
111:
112: my %crlchecked; # Will contain clients for which the client's SSL
113: # has been checked against the cluster's Certificate
114: # Revocation List.
115:
116: my $dist;
117:
118: #
119: # The hash below is used for command dispatching, and is therefore keyed on the request keyword.
120: # Each element of the hash contains a reference to an array that contains:
121: # A reference to a sub that executes the request corresponding to the keyword.
122: # A flag that is true if the request must be encoded to be acceptable.
123: # A mask with bits as follows:
124: # CLIENT_OK - Set when the function is allowed by ordinary clients
125: # MANAGER_OK - Set when the function is allowed to manager clients.
126: #
127: my $CLIENT_OK = 1;
128: my $MANAGER_OK = 2;
129: my %Dispatcher;
130:
131:
132: #
133: # The array below are password error strings."
134: #
135: my $lastpwderror = 13; # Largest error number from lcpasswd.
136: my @passwderrors = ("ok",
137: "pwchange_failure - lcpasswd must be run as user 'www'",
138: "pwchange_failure - lcpasswd got incorrect number of arguments",
139: "pwchange_failure - lcpasswd did not get the right nubmer of input text lines",
140: "pwchange_failure - lcpasswd too many simultaneous pwd changes in progress",
141: "pwchange_failure - lcpasswd User does not exist.",
142: "pwchange_failure - lcpasswd Incorrect current passwd",
143: "pwchange_failure - lcpasswd Unable to su to root.",
144: "pwchange_failure - lcpasswd Cannot set new passwd.",
145: "pwchange_failure - lcpasswd Username has invalid characters",
146: "pwchange_failure - lcpasswd Invalid characters in password",
147: "pwchange_failure - lcpasswd User already exists",
148: "pwchange_failure - lcpasswd Something went wrong with user addition.",
149: "pwchange_failure - lcpasswd Password mismatch",
150: "pwchange_failure - lcpasswd Error filename is invalid");
151:
152:
153: # This array are the errors from lcinstallfile:
154:
155: my @installerrors = ("ok",
156: "Initial user id of client not that of www",
157: "Usage error, not enough command line arguments",
158: "Source filename does not exist",
159: "Destination filename does not exist",
160: "Some file operation failed",
161: "Invalid table filename."
162: );
163:
164: #
165: # The %trust hash classifies commands according to type of trust
166: # required for execution of the command.
167: #
168: # When clients from a different institution request execution of a
169: # particular command, the trust settings for that institution set
170: # for this domain (or default domain for a multi-domain server) will
171: # be checked to see if running the command is allowed.
172: #
173: # Trust types which depend on the "Trust" domain configuration
174: # for the machine's default domain are:
175: #
176: # content ("Access to this domain's content by others")
177: # shared ("Access to other domain's content by this domain")
178: # enroll ("Enrollment in this domain's courses by others")
179: # coaurem ("Co-author roles for this domain's users elsewhere")
180: # othcoau ("Co-author roles in this domain for others")
181: # domroles ("Domain roles in this domain assignable to others")
182: # catalog ("Course Catalog for this domain displayed elsewhere")
183: # reqcrs ("Requests for creation of courses in this domain by others")
184: # msg ("Users in other domains can send messages to this domain")
185: #
186: # Trust type which depends on the User Session Hosting (remote)
187: # domain configuration for machine's default domain is: "remote".
188: #
189: # Trust types which depend on contents of manager.tab in
190: # /home/httpd/lonTabs is: "manageronly".
191: #
192: # Trust type which requires client to share the same LON-CAPA
193: # "internet domain" (i.e., same institution as this server) is:
194: # "institutiononly".
195: #
196:
197: my %trust = (
198: auth => {remote => 1},
199: autocreatepassword => {remote => 1},
200: autocrsreqchecks => {remote => 1, reqcrs => 1},
201: autocrsrequpdate => {remote => 1},
202: autocrsreqvalidation => {remote => 1},
203: autogetsections => {remote => 1},
204: autoinstcodedefaults => {remote => 1, catalog => 1},
205: autoinstcodeformat => {remote => 1, catalog => 1},
206: autonewcourse => {remote => 1, reqcrs => 1},
207: autophotocheck => {remote => 1, enroll => 1},
208: autophotochoice => {remote => 1},
209: autophotopermission => {remote => 1, enroll => 1},
210: autopossibleinstcodes => {remote => 1, reqcrs => 1},
211: autoretrieve => {remote => 1, enroll => 1, catalog => 1},
212: autorun => {remote => 1, enroll => 1, reqcrs => 1},
213: autovalidateclass_sec => {catalog => 1},
214: autovalidatecourse => {remote => 1, enroll => 1},
215: autovalidateinstcode => {domroles => 1, remote => 1, enroll => 1},
216: autovalidateinstcrosslist => {remote => 1, enroll => 1},
217: autoinstsecreformat => {remote => 1, enroll => 1},
218: changeuserauth => {remote => 1, domroles => 1},
219: chatretr => {remote => 1, enroll => 1},
220: chatsend => {remote => 1, enroll => 1},
221: courseiddump => {remote => 1, domroles => 1, enroll => 1},
222: courseidput => {remote => 1, domroles => 1, enroll => 1},
223: courseidputhash => {remote => 1, domroles => 1, enroll => 1},
224: courselastaccess => {remote => 1, domroles => 1, enroll => 1},
225: coursesessions => {institutiononly => 1},
226: currentauth => {remote => 1, domroles => 1, enroll => 1},
227: currentdump => {remote => 1, enroll => 1},
228: currentversion => {remote=> 1, content => 1},
229: dcmaildump => {remote => 1, domroles => 1},
230: dcmailput => {remote => 1, domroles => 1},
231: del => {remote => 1, domroles => 1, enroll => 1, content => 1},
232: delbalcookie => {institutiononly => 1},
233: delusersession => {institutiononly => 1},
234: deldom => {remote => 1, domroles => 1}, # not currently used
235: devalidatecache => {institutiononly => 1},
236: domroleput => {remote => 1, enroll => 1},
237: domrolesdump => {remote => 1, catalog => 1},
238: du => {remote => 1, enroll => 1},
239: du2 => {remote => 1, enroll => 1},
240: dump => {remote => 1, enroll => 1, domroles => 1},
241: edit => {institutiononly => 1}, #not used currently
242: edump => {remote => 1, enroll => 1, domroles => 1},
243: eget => {remote => 1, domroles => 1, enroll => 1}, #not used currently
244: egetdom => {remote => 1, domroles => 1, enroll => 1, },
245: ekey => {anywhere => 1},
246: exit => {anywhere => 1},
247: fetchuserfile => {remote => 1, enroll => 1},
248: get => {remote => 1, domroles => 1, enroll => 1},
249: getdom => {anywhere => 1},
250: home => {anywhere => 1},
251: iddel => {remote => 1, enroll => 1},
252: idget => {remote => 1, enroll => 1},
253: idput => {remote => 1, domroles => 1, enroll => 1},
254: inc => {remote => 1, enroll => 1},
255: init => {anywhere => 1},
256: inst_usertypes => {remote => 1, domroles => 1, enroll => 1},
257: instemailrules => {remote => 1, domroles => 1},
258: instidrulecheck => {remote => 1, domroles => 1,},
259: instidrules => {remote => 1, domroles => 1,},
260: instrulecheck => {remote => 1, enroll => 1, reqcrs => 1, domroles => 1},
261: instselfcreatecheck => {institutiononly => 1},
262: instunamemapcheck => {remote => 1,},
263: instuserrules => {remote => 1, enroll => 1, reqcrs => 1, domroles => 1},
264: keys => {remote => 1,},
265: load => {anywhere => 1},
266: log => {anywhere => 1},
267: ls => {remote => 1, enroll => 1, content => 1,},
268: ls2 => {remote => 1, enroll => 1, content => 1,},
269: ls3 => {remote => 1, enroll => 1, content => 1,},
270: lti => {institutiononly => 1},
271: makeuser => {remote => 1, enroll => 1, domroles => 1,},
272: mkdiruserfile => {remote => 1, enroll => 1,},
273: newput => {remote => 1, enroll => 1, reqcrs => 1, domroles => 1,},
274: passwd => {remote => 1},
275: ping => {anywhere => 1},
276: pong => {anywhere => 1},
277: pushfile => {manageronly => 1},
278: put => {remote => 1, enroll => 1, domroles => 1, msg => 1, content => 1, shared => 1},
279: putdom => {remote => 1, domroles => 1,},
280: putstore => {remote => 1, enroll => 1},
281: queryreply => {anywhere => 1},
282: querysend => {anywhere => 1},
283: querysend_activitylog => {remote => 1},
284: querysend_allusers => {remote => 1, domroles => 1},
285: querysend_courselog => {remote => 1},
286: querysend_fetchenrollment => {remote => 1},
287: querysend_getinstuser => {remote => 1},
288: querysend_getmultinstusers => {remote => 1},
289: querysend_instdirsearch => {remote => 1, domroles => 1, coaurem => 1},
290: querysend_institutionalphotos => {remote => 1},
291: querysend_portfolio_metadata => {remote => 1, content => 1},
292: querysend_userlog => {remote => 1, domroles => 1},
293: querysend_usersearch => {remote => 1, enroll => 1, coaurem => 1},
294: quit => {anywhere => 1},
295: readlonnetglobal => {institutiononly => 1},
296: reinit => {manageronly => 1}, #not used currently
297: removeuserfile => {remote => 1, enroll => 1},
298: renameuserfile => {remote => 1,},
299: restore => {remote => 1, enroll => 1, reqcrs => 1,},
300: rolesdel => {remote => 1, enroll => 1, domroles => 1, coaurem => 1},
301: rolesput => {remote => 1, enroll => 1, domroles => 1, coaurem => 1},
302: servercerts => {institutiononly => 1},
303: serverdistarch => {anywhere => 1},
304: serverhomeID => {anywhere => 1},
305: serverloncaparev => {anywhere => 1},
306: servertimezone => {remote => 1, enroll => 1},
307: setannounce => {remote => 1, domroles => 1},
308: sethost => {anywhere => 1},
309: store => {remote => 1, enroll => 1, reqcrs => 1,},
310: studentphoto => {remote => 1, enroll => 1},
311: sub => {content => 1,},
312: tmpdel => {institutiononly => 1},
313: tmpget => {institutiononly => 1},
314: tmpput => {remote => 1, othcoau => 1},
315: tokenauthuserfile => {anywhere => 1},
316: unamemaprules => {remote => 1,},
317: unsub => {content => 1,},
318: update => {shared => 1},
319: updatebalcookie => {institutiononly => 1},
320: updateclickers => {remote => 1},
321: userhassession => {anywhere => 1},
322: userload => {anywhere => 1},
323: version => {anywhere => 1}, #not used
324: );
325:
326: #
327: # Statistics that are maintained and dislayed in the status line.
328: #
329: my $Transactions = 0; # Number of attempted transactions.
330: my $Failures = 0; # Number of transcations failed.
331:
332: # ResetStatistics:
333: # Resets the statistics counters:
334: #
335: sub ResetStatistics {
336: $Transactions = 0;
337: $Failures = 0;
338: }
339:
340: #------------------------------------------------------------------------
341: #
342: # LocalConnection
343: # Completes the formation of a locally authenticated connection.
344: # This function will ensure that the 'remote' client is really the
345: # local host. If not, the connection is closed, and the function fails.
346: # If so, initcmd is parsed for the name of a file containing the
347: # IDEA session key. The fie is opened, read, deleted and the session
348: # key returned to the caller.
349: #
350: # Parameters:
351: # $Socket - Socket open on client.
352: # $initcmd - The full text of the init command.
353: #
354: # Returns:
355: # IDEA session key on success.
356: # undef on failure.
357: #
358: sub LocalConnection {
359: my ($Socket, $initcmd) = @_;
360: Debug("Attempting local connection: $initcmd client: $clientip");
361: if($clientip ne "127.0.0.1") {
362: &logthis('<font color="red"> LocalConnection rejecting non local: '
363: ."$clientip ne 127.0.0.1 </font>");
364: close $Socket;
365: return undef;
366: } else {
367: chomp($initcmd); # Get rid of \n in filename.
368: my ($init, $type, $name) = split(/:/, $initcmd);
369: Debug(" Init command: $init $type $name ");
370:
371: # Require that $init = init, and $type = local: Otherwise
372: # the caller is insane:
373:
374: if(($init ne "init") && ($type ne "local")) {
375: &logthis('<font color = "red"> LocalConnection: caller is insane! '
376: ."init = $init, and type = $type </font>");
377: close($Socket);;
378: return undef;
379:
380: }
381: # Now get the key filename:
382:
383: my $IDEAKey = lonlocal::ReadKeyFile($name);
384: return $IDEAKey;
385: }
386: }
387: #------------------------------------------------------------------------------
388: #
389: # SSLConnection
390: # Completes the formation of an ssh authenticated connection. The
391: # socket is promoted to an ssl socket. If this promotion and the associated
392: # certificate exchange are successful, the IDEA key is generated and sent
393: # to the remote peer via the SSL tunnel. The IDEA key is also returned to
394: # the caller after the SSL tunnel is torn down.
395: #
396: # Parameters:
397: # Name Type Purpose
398: # $Socket IO::Socket::INET Plaintext socket.
399: #
400: # Returns:
401: # IDEA key on success.
402: # undef on failure.
403: #
404: sub SSLConnection {
405: my $Socket = shift;
406:
407: Debug("SSLConnection: ");
408: my $KeyFile = lonssl::KeyFile();
409: if(!$KeyFile) {
410: my $err = lonssl::LastError();
411: &logthis("<font color=\"red\"> CRITICAL"
412: ."Can't get key file $err </font>");
413: return undef;
414: }
415: my ($CACertificate,
416: $Certificate) = lonssl::CertificateFile();
417:
418:
419: # If any of the key, certificate or certificate authority
420: # certificate filenames are not defined, this can't work.
421:
422: if((!$Certificate) || (!$CACertificate)) {
423: my $err = lonssl::LastError();
424: &logthis("<font color=\"red\"> CRITICAL"
425: ."Can't get certificates: $err </font>");
426:
427: return undef;
428: }
429: Debug("Key: $KeyFile CA: $CACertificate Cert: $Certificate");
430:
431: # Indicate to our peer that we can procede with
432: # a transition to ssl authentication:
433:
434: print $Socket "ok:ssl\n";
435:
436: Debug("Approving promotion -> ssl");
437: # And do so:
438:
439: my $CRLFile;
440: unless ($crlchecked{$clientname}) {
441: $CRLFile = lonssl::CRLFile();
442: $crlchecked{$clientname} = 1;
443: }
444:
445: my $SSLSocket = lonssl::PromoteServerSocket($Socket,
446: $CACertificate,
447: $Certificate,
448: $KeyFile,
449: $clientname,
450: $CRLFile,
451: $clientversion);
452: if(! ($SSLSocket) ) { # SSL socket promotion failed.
453: my $err = lonssl::LastError();
454: &logthis("<font color=\"red\"> CRITICAL "
455: ."SSL Socket promotion failed: $err </font>");
456: return undef;
457: }
458: Debug("SSL Promotion successful");
459:
460: #
461: # The only thing we'll use the socket for is to send the IDEA key
462: # to the peer:
463:
464: my $Key = lonlocal::CreateCipherKey();
465: print $SSLSocket "$Key\n";
466:
467: lonssl::Close($SSLSocket);
468:
469: Debug("Key exchange complete: $Key");
470:
471: return $Key;
472: }
473: #
474: # InsecureConnection:
475: # If insecure connections are allowd,
476: # exchange a challenge with the client to 'validate' the
477: # client (not really, but that's the protocol):
478: # We produce a challenge string that's sent to the client.
479: # The client must then echo the challenge verbatim to us.
480: #
481: # Parameter:
482: # Socket - Socket open on the client.
483: # Returns:
484: # 1 - success.
485: # 0 - failure (e.g.mismatch or insecure not allowed).
486: #
487: sub InsecureConnection {
488: my $Socket = shift;
489:
490: # Don't even start if insecure connections are not allowed.
491: # return 0 if Insecure connections not allowed.
492: #
493: if (ref($secureconf{'connfrom'}) eq 'HASH') {
494: if ($clientsamedom) {
495: if ($secureconf{'connfrom'}{'dom'} eq 'req') {
496: return 0;
497: }
498: } elsif ($clientsameinst) {
499: if ($secureconf{'connfrom'}{'intdom'} eq 'req') {
500: return 0;
501: }
502: } else {
503: if ($secureconf{'connfrom'}{'other'} eq 'req') {
504: return 0;
505: }
506: }
507: } elsif (!$perlvar{londAllowInsecure}) {
508: return 0;
509: }
510:
511: # Fabricate a challenge string and send it..
512:
513: my $challenge = "$$".time; # pid + time.
514: print $Socket "$challenge\n";
515: &status("Waiting for challenge reply");
516:
517: my $answer = <$Socket>;
518: $answer =~s/\W//g;
519: if($challenge eq $answer) {
520: return 1;
521: } else {
522: logthis("<font color='blue'>WARNING client did not respond to challenge</font>");
523: &status("No challenge reqply");
524: return 0;
525: }
526:
527:
528: }
529: #
530: # Safely execute a command (as long as it's not a shel command and doesn
531: # not require/rely on shell escapes. The function operates by doing a
532: # a pipe based fork and capturing stdout and stderr from the pipe.
533: #
534: # Formal Parameters:
535: # $line - A line of text to be executed as a command.
536: # Returns:
537: # The output from that command. If the output is multiline the caller
538: # must know how to split up the output.
539: #
540: #
541: sub execute_command {
542: my ($line) = @_;
543: my @words = split(/\s/, $line); # Bust the command up into words.
544: my $output = "";
545:
546: my $pid = open(CHILD, "-|");
547:
548: if($pid) { # Parent process
549: Debug("In parent process for execute_command");
550: my @data = <CHILD>; # Read the child's outupt...
551: close CHILD;
552: foreach my $output_line (@data) {
553: Debug("Adding $output_line");
554: $output .= $output_line; # Presumably has a \n on it.
555: }
556:
557: } else { # Child process
558: close (STDERR);
559: open (STDERR, ">&STDOUT");# Combine stderr, and stdout...
560: exec(@words); # won't return.
561: }
562: return $output;
563: }
564:
565:
566: # GetCertificate: Given a transaction that requires a certificate,
567: # this function will extract the certificate from the transaction
568: # request. Note that at this point, the only concept of a certificate
569: # is the hostname to which we are connected.
570: #
571: # Parameter:
572: # request - The request sent by our client (this parameterization may
573: # need to change when we really use a certificate granting
574: # authority.
575: #
576: sub GetCertificate {
577: my $request = shift;
578:
579: return $clientip;
580: }
581:
582: #
583: # Return true if client is a manager.
584: #
585: sub isManager {
586: return (($ConnectionType eq "manager") || ($ConnectionType eq "both"));
587: }
588: #
589: # Return tru if client can do client functions
590: #
591: sub isClient {
592: return (($ConnectionType eq "client") || ($ConnectionType eq "both"));
593: }
594:
595:
596: #
597: # ReadManagerTable: Reads in the current manager table. For now this is
598: # done on each manager authentication because:
599: # - These authentications are not frequent
600: # - This allows dynamic changes to the manager table
601: # without the need to signal to the lond.
602: #
603: sub ReadManagerTable {
604:
605: &Debug("Reading manager table");
606: # Clean out the old table first..
607:
608: foreach my $key (keys %managers) {
609: delete $managers{$key};
610: }
611:
612: my $tablename = $perlvar{'lonTabDir'}."/managers.tab";
613: if (!open (MANAGERS, $tablename)) {
614: my $hostname = &Apache::lonnet::hostname($perlvar{'lonHostID'});
615: if (&Apache::lonnet::is_LC_dns($hostname)) {
616: &logthis('<font color="red">No manager table. Nobody can manage!!</font>');
617: }
618: return;
619: }
620: while(my $host = <MANAGERS>) {
621: chomp($host);
622: if ($host =~ "^#") { # Comment line.
623: next;
624: }
625: if (!defined &Apache::lonnet::get_host_ip($host)) { # This is a non cluster member
626: # The entry is of the form:
627: # cluname:hostname
628: # cluname - A 'cluster hostname' is needed in order to negotiate
629: # the host key.
630: # hostname- The dns name of the host.
631: #
632: my($cluname, $dnsname) = split(/:/, $host);
633:
634: my $ip = gethostbyname($dnsname);
635: if(defined($ip)) { # bad names don't deserve entry.
636: my $hostip = inet_ntoa($ip);
637: $managers{$hostip} = $cluname;
638: logthis('<font color="green"> registering manager '.
639: "$dnsname as $cluname with $hostip </font>\n");
640: }
641: } else {
642: logthis('<font color="green"> existing host'." $host</font>\n");
643: $managers{&Apache::lonnet::get_host_ip($host)} = $host; # Use info from cluster tab if cluster memeber
644: }
645: }
646: }
647:
648: #
649: # ValidManager: Determines if a given certificate represents a valid manager.
650: # in this primitive implementation, the 'certificate' is
651: # just the connecting loncapa client name. This is checked
652: # against a valid client list in the configuration.
653: #
654: #
655: sub ValidManager {
656: my $certificate = shift;
657:
658: return isManager;
659: }
660: #
661: # CopyFile: Called as part of the process of installing a
662: # new configuration file. This function copies an existing
663: # file to a backup file.
664: # Parameters:
665: # oldfile - Name of the file to backup.
666: # newfile - Name of the backup file.
667: # Return:
668: # 0 - Failure (errno has failure reason).
669: # 1 - Success.
670: #
671: sub CopyFile {
672:
673: my ($oldfile, $newfile) = @_;
674:
675: if (! copy($oldfile,$newfile)) {
676: return 0;
677: }
678: chmod(0660, $newfile);
679: return 1;
680: }
681: #
682: # Host files are passed out with externally visible host IPs.
683: # If, for example, we are behind a fire-wall or NAT host, our
684: # internally visible IP may be different than the externally
685: # visible IP. Therefore, we always adjust the contents of the
686: # host file so that the entry for ME is the IP that we believe
687: # we have. At present, this is defined as the entry that
688: # DNS has for us. If by some chance we are not able to get a
689: # DNS translation for us, then we assume that the host.tab file
690: # is correct.
691: # BUGBUGBUG - in the future, we really should see if we can
692: # easily query the interface(s) instead.
693: # Parameter(s):
694: # contents - The contents of the host.tab to check.
695: # Returns:
696: # newcontents - The adjusted contents.
697: #
698: #
699: sub AdjustHostContents {
700: my $contents = shift;
701: my $adjusted;
702: my $me = $perlvar{'lonHostID'};
703:
704: foreach my $line (split(/\n/,$contents)) {
705: if(!(($line eq "") || ($line =~ /^ *\#/) || ($line =~ /^ *$/) ||
706: ($line =~ /^\s*\^/))) {
707: chomp($line);
708: my ($id,$domain,$role,$name,$ip,$maxcon,$idleto,$mincon)=split(/:/,$line);
709: if ($id eq $me) {
710: my $ip = gethostbyname($name);
711: my $ipnew = inet_ntoa($ip);
712: $ip = $ipnew;
713: # Reconstruct the host line and append to adjusted:
714:
715: my $newline = "$id:$domain:$role:$name:$ip";
716: if($maxcon ne "") { # Not all hosts have loncnew tuning params
717: $newline .= ":$maxcon:$idleto:$mincon";
718: }
719: $adjusted .= $newline."\n";
720:
721: } else { # Not me, pass unmodified.
722: $adjusted .= $line."\n";
723: }
724: } else { # Blank or comment never re-written.
725: $adjusted .= $line."\n"; # Pass blanks and comments as is.
726: }
727: }
728: return $adjusted;
729: }
730: #
731: # InstallFile: Called to install an administrative file:
732: # - The file is created int a temp directory called <name>.tmp
733: # - lcinstall file is called to install the file.
734: # since the web app has no direct write access to the table directory
735: #
736: # Parameters:
737: # Name of the file
738: # File Contents.
739: # Return:
740: # nonzero - success.
741: # 0 - failure and $! has an errno.
742: # Assumptions:
743: # File installtion is a relatively infrequent
744: #
745: sub InstallFile {
746:
747: my ($Filename, $Contents) = @_;
748: # my $TempFile = $Filename.".tmp";
749: my $exedir = $perlvar{'lonDaemons'};
750: my $tmpdir = $exedir.'/tmp/';
751: my $TempFile = $tmpdir."TempTableFile.tmp";
752:
753: # Open the file for write:
754:
755: my $fh = IO::File->new("> $TempFile"); # Write to temp.
756: if(!(defined $fh)) {
757: &logthis('<font color="red"> Unable to create '.$TempFile."</font>");
758: return 0;
759: }
760: # write the contents of the file:
761:
762: print $fh ($Contents);
763: $fh->close; # In case we ever have a filesystem w. locking
764:
765: chmod(0664, $TempFile); # Everyone can write it.
766:
767: # Use lcinstall file to put the file in the table directory...
768:
769: &Debug("Opening pipe to $exedir/lcinstallfile $TempFile $Filename");
770: my $pf = IO::File->new("| $exedir/lcinstallfile $TempFile $Filename > $exedir/logs/lcinstallfile.log");
771: close $pf;
772: my $err = $?;
773: &Debug("Status is $err");
774: if ($err != 0) {
775: my $msg = $err;
776: if ($err < @installerrors) {
777: $msg = $installerrors[$err];
778: }
779: &logthis("Install failed for table file $Filename : $msg");
780: return 0;
781: }
782:
783: # Remove the temp file:
784:
785: unlink($TempFile);
786:
787: return 1;
788: }
789:
790:
791: #
792: # ConfigFileFromSelector: converts a configuration file selector
793: # into a configuration file pathname.
794: # Supports the following file selectors:
795: # hosts, domain, dns_hosts, dns_domain
796: #
797: #
798: # Parameters:
799: # selector - Configuration file selector.
800: # Returns:
801: # Full path to the file or undef if the selector is invalid.
802: #
803: sub ConfigFileFromSelector {
804: my $selector = shift;
805: my $tablefile;
806:
807: if ($selector eq 'loncapaCAcrl') {
808: my $tabledir = $perlvar{'lonCertificateDirectory'};
809: if (-d $tabledir) {
810: $tablefile = $tabledir.'/'.$selector.'.pem';
811: }
812: } else {
813: my $tabledir = $perlvar{'lonTabDir'}.'/';
814: if (($selector eq "hosts") || ($selector eq "domain") ||
815: ($selector eq "dns_hosts") || ($selector eq "dns_domain")) {
816: $tablefile = $tabledir.$selector.'.tab';
817: }
818: }
819: return $tablefile;
820: }
821: #
822: # PushFile: Called to do an administrative push of a file.
823: # - Ensure the file being pushed is one we support.
824: # - Backup the old file to <filename.saved>
825: # - Separate the contents of the new file out from the
826: # rest of the request.
827: # - Write the new file.
828: # Parameter:
829: # Request - The entire user request. This consists of a : separated
830: # string pushfile:tablename:contents.
831: # NOTE: The contents may have :'s in it as well making things a bit
832: # more interesting... but not much.
833: # Returns:
834: # String to send to client ("ok" or "refused" if bad file).
835: #
836: sub PushFile {
837: my $request = shift;
838: my ($command, $filename, $contents) = split(":", $request, 3);
839: &Debug("PushFile");
840:
841: # At this point in time, pushes for only the following tables and
842: # CRL file are supported:
843: # hosts.tab ($filename eq host).
844: # domain.tab ($filename eq domain).
845: # dns_hosts.tab ($filename eq dns_host).
846: # dns_domain.tab ($filename eq dns_domain).
847: # loncapaCAcrl.pem ($filename eq loncapaCAcrl).
848: # Construct the destination filename or reject the request.
849: #
850: # lonManage is supposed to ensure this, however this session could be
851: # part of some elaborate spoof that managed somehow to authenticate.
852: #
853:
854:
855: my $tablefile = ConfigFileFromSelector($filename);
856: if(! (defined $tablefile)) {
857: return "refused";
858: }
859:
860: # If the file being pushed is the host file, we adjust the entry for ourself so that the
861: # IP will be our current IP as looked up in dns. Note this is only 99% good as it's possible
862: # to conceive of conditions where we don't have a DNS entry locally. This is possible in a
863: # network sense but it doesn't make much sense in a LonCAPA sense so we ignore (for now)
864: # that possibilty.
865:
866: if($filename eq "host") {
867: $contents = AdjustHostContents($contents);
868: } elsif (($filename eq 'dns_hosts') || ($filename eq 'dns_domain') ||
869: ($filename eq 'loncapaCAcrl')) {
870: if ($contents eq '') {
871: &logthis('<font color="red"> Pushfile: unable to install '
872: .$tablefile." - no data received from push. </font>");
873: return 'error: push had no data';
874: }
875: if (&Apache::lonnet::get_host_ip($clientname)) {
876: my $clienthost = &Apache::lonnet::hostname($clientname);
877: if ($managers{$clientip} eq $clientname) {
878: my $clientprotocol = $Apache::lonnet::protocol{$clientname};
879: $clientprotocol = 'http' if ($clientprotocol ne 'https');
880: my $url;
881: if ($filename eq 'loncapaCAcrl') {
882: $url = '/adm/dns/loncapaCRL';
883: } else {
884: $url = '/adm/'.$filename;
885: $url =~ s{_}{/};
886: }
887: my $request=new HTTP::Request('GET',"$clientprotocol://$clienthost$url");
888: my $response = LONCAPA::LWPReq::makerequest($clientname,$request,'',\%perlvar,60,0);
889: if ($response->is_error()) {
890: &logthis('<font color="red"> Pushfile: unable to install '
891: .$tablefile." - error attempting to pull data. </font>");
892: return 'error: pull failed';
893: } else {
894: my $result = $response->content;
895: chomp($result);
896: unless ($result eq $contents) {
897: &logthis('<font color="red"> Pushfile: unable to install '
898: .$tablefile." - pushed data and pulled data differ. </font>");
899: my $pushleng = length($contents);
900: my $pullleng = length($result);
901: if ($pushleng != $pullleng) {
902: return "error: $pushleng vs $pullleng bytes";
903: } else {
904: return "error: mismatch push and pull";
905: }
906: }
907: }
908: }
909: }
910: }
911:
912: # Install the new file:
913:
914: &logthis("Installing new $tablefile contents:\n$contents");
915: if(!InstallFile($tablefile, $contents)) {
916: &logthis('<font color="red"> Pushfile: unable to install '
917: .$tablefile." $! </font>");
918: return "error:$!";
919: } else {
920: &logthis('<font color="green"> Installed new '.$tablefile
921: ." - transaction by: $clientname ($clientip)</font>");
922: my $adminmail = $perlvar{'lonAdmEMail'};
923: my $admindom = &Apache::lonnet::host_domain($perlvar{'lonHostID'});
924: if ($admindom ne '') {
925: my %domconfig =
926: &Apache::lonnet::get_dom('configuration',['contacts'],$admindom);
927: if (ref($domconfig{'contacts'}) eq 'HASH') {
928: if ($domconfig{'contacts'}{'adminemail'} ne '') {
929: $adminmail = $domconfig{'contacts'}{'adminemail'};
930: }
931: }
932: }
933: if ($adminmail =~ /^[^\@]+\@[^\@]+$/) {
934: my $msg = new Mail::Send;
935: $msg->to($adminmail);
936: $msg->subject('LON-CAPA DNS update on '.$perlvar{'lonHostID'});
937: $msg->add('Content-type','text/plain; charset=UTF-8');
938: if (my $fh = $msg->open()) {
939: print $fh 'Update to '.$tablefile.' from Cluster Manager '.
940: "$clientname ($clientip)\n";
941: $fh->close;
942: }
943: }
944: }
945:
946: # Indicate success:
947:
948: return "ok";
949:
950: }
951:
952: #
953: # Called to re-init either lonc or lond.
954: #
955: # Parameters:
956: # request - The full request by the client. This is of the form
957: # reinit:<process>
958: # where <process> is allowed to be either of
959: # lonc or lond
960: #
961: # Returns:
962: # The string to be sent back to the client either:
963: # ok - Everything worked just fine.
964: # error:why - There was a failure and why describes the reason.
965: #
966: #
967: sub ReinitProcess {
968: my $request = shift;
969:
970:
971: # separate the request (reinit) from the process identifier and
972: # validate it producing the name of the .pid file for the process.
973: #
974: #
975: my ($junk, $process) = split(":", $request);
976: my $processpidfile = $perlvar{'lonDaemons'}.'/logs/';
977: if($process eq 'lonc') {
978: $processpidfile = $processpidfile."lonc.pid";
979: if (!open(PIDFILE, "< $processpidfile")) {
980: return "error:Open failed for $processpidfile";
981: }
982: my $loncpid = <PIDFILE>;
983: close(PIDFILE);
984: logthis('<font color="red"> Reinitializing lonc pid='.$loncpid
985: ."</font>");
986: kill("USR2", $loncpid);
987: } elsif ($process eq 'lond') {
988: logthis('<font color="red"> Reinitializing self (lond) </font>');
989: &UpdateHosts; # Lond is us!!
990: } else {
991: &logthis('<font color="yellow" Invalid reinit request for '.$process
992: ."</font>");
993: return "error:Invalid process identifier $process";
994: }
995: return 'ok';
996: }
997: # Validate a line in a configuration file edit script:
998: # Validation includes:
999: # - Ensuring the command is valid.
1000: # - Ensuring the command has sufficient parameters
1001: # Parameters:
1002: # scriptline - A line to validate (\n has been stripped for what it's worth).
1003: #
1004: # Return:
1005: # 0 - Invalid scriptline.
1006: # 1 - Valid scriptline
1007: # NOTE:
1008: # Only the command syntax is checked, not the executability of the
1009: # command.
1010: #
1011: sub isValidEditCommand {
1012: my $scriptline = shift;
1013:
1014: # Line elements are pipe separated:
1015:
1016: my ($command, $key, $newline) = split(/\|/, $scriptline);
1017: &logthis('<font color="green"> isValideditCommand checking: '.
1018: "Command = '$command', Key = '$key', Newline = '$newline' </font>\n");
1019:
1020: if ($command eq "delete") {
1021: #
1022: # key with no newline.
1023: #
1024: if( ($key eq "") || ($newline ne "")) {
1025: return 0; # Must have key but no newline.
1026: } else {
1027: return 1; # Valid syntax.
1028: }
1029: } elsif ($command eq "replace") {
1030: #
1031: # key and newline:
1032: #
1033: if (($key eq "") || ($newline eq "")) {
1034: return 0;
1035: } else {
1036: return 1;
1037: }
1038: } elsif ($command eq "append") {
1039: if (($key ne "") && ($newline eq "")) {
1040: return 1;
1041: } else {
1042: return 0;
1043: }
1044: } else {
1045: return 0; # Invalid command.
1046: }
1047: return 0; # Should not get here!!!
1048: }
1049: #
1050: # ApplyEdit - Applies an edit command to a line in a configuration
1051: # file. It is the caller's responsiblity to validate the
1052: # edit line.
1053: # Parameters:
1054: # $directive - A single edit directive to apply.
1055: # Edit directives are of the form:
1056: # append|newline - Appends a new line to the file.
1057: # replace|key|newline - Replaces the line with key value 'key'
1058: # delete|key - Deletes the line with key value 'key'.
1059: # $editor - A config file editor object that contains the
1060: # file being edited.
1061: #
1062: sub ApplyEdit {
1063:
1064: my ($directive, $editor) = @_;
1065:
1066: # Break the directive down into its command and its parameters
1067: # (at most two at this point. The meaning of the parameters, if in fact
1068: # they exist depends on the command).
1069:
1070: my ($command, $p1, $p2) = split(/\|/, $directive);
1071:
1072: if($command eq "append") {
1073: $editor->Append($p1); # p1 - key p2 null.
1074: } elsif ($command eq "replace") {
1075: $editor->ReplaceLine($p1, $p2); # p1 - key p2 = newline.
1076: } elsif ($command eq "delete") {
1077: $editor->DeleteLine($p1); # p1 - key p2 null.
1078: } else { # Should not get here!!!
1079: die "Invalid command given to ApplyEdit $command"
1080: }
1081: }
1082: #
1083: # AdjustOurHost:
1084: # Adjusts a host file stored in a configuration file editor object
1085: # for the true IP address of this host. This is necessary for hosts
1086: # that live behind a firewall.
1087: # Those hosts have a publicly distributed IP of the firewall, but
1088: # internally must use their actual IP. We assume that a given
1089: # host only has a single IP interface for now.
1090: # Formal Parameters:
1091: # editor - The configuration file editor to adjust. This
1092: # editor is assumed to contain a hosts.tab file.
1093: # Strategy:
1094: # - Figure out our hostname.
1095: # - Lookup the entry for this host.
1096: # - Modify the line to contain our IP
1097: # - Do a replace for this host.
1098: sub AdjustOurHost {
1099: my $editor = shift;
1100:
1101: # figure out who I am.
1102:
1103: my $myHostName = $perlvar{'lonHostID'}; # LonCAPA hostname.
1104:
1105: # Get my host file entry.
1106:
1107: my $ConfigLine = $editor->Find($myHostName);
1108: if(! (defined $ConfigLine)) {
1109: die "AdjustOurHost - no entry for me in hosts file $myHostName";
1110: }
1111: # figure out my IP:
1112: # Use the config line to get my hostname.
1113: # Use gethostbyname to translate that into an IP address.
1114: #
1115: my ($id,$domain,$role,$name,$maxcon,$idleto,$mincon) = split(/:/,$ConfigLine);
1116: #
1117: # Reassemble the config line from the elements in the list.
1118: # Note that if the loncnew items were not present before, they will
1119: # be now even if they would be empty
1120: #
1121: my $newConfigLine = $id;
1122: foreach my $item ($domain, $role, $name, $maxcon, $idleto, $mincon) {
1123: $newConfigLine .= ":".$item;
1124: }
1125: # Replace the line:
1126:
1127: $editor->ReplaceLine($id, $newConfigLine);
1128:
1129: }
1130: #
1131: # ReplaceConfigFile:
1132: # Replaces a configuration file with the contents of a
1133: # configuration file editor object.
1134: # This is done by:
1135: # - Copying the target file to <filename>.old
1136: # - Writing the new file to <filename>.tmp
1137: # - Moving <filename.tmp> -> <filename>
1138: # This laborious process ensures that the system is never without
1139: # a configuration file that's at least valid (even if the contents
1140: # may be dated).
1141: # Parameters:
1142: # filename - Name of the file to modify... this is a full path.
1143: # editor - Editor containing the file.
1144: #
1145: sub ReplaceConfigFile {
1146:
1147: my ($filename, $editor) = @_;
1148:
1149: CopyFile ($filename, $filename.".old");
1150:
1151: my $contents = $editor->Get(); # Get the contents of the file.
1152:
1153: InstallFile($filename, $contents);
1154: }
1155: #
1156: #
1157: # Called to edit a configuration table file
1158: # Parameters:
1159: # request - The entire command/request sent by lonc or lonManage
1160: # Return:
1161: # The reply to send to the client.
1162: #
1163: sub EditFile {
1164: my $request = shift;
1165:
1166: # Split the command into it's pieces: edit:filetype:script
1167:
1168: my ($cmd, $filetype, $script) = split(/:/, $request,3); # : in script
1169:
1170: # Check the pre-coditions for success:
1171:
1172: if($cmd != "edit") { # Something is amiss afoot alack.
1173: return "error:edit request detected, but request != 'edit'\n";
1174: }
1175: if( ($filetype ne "hosts") &&
1176: ($filetype ne "domain")) {
1177: return "error:edit requested with invalid file specifier: $filetype \n";
1178: }
1179:
1180: # Split the edit script and check it's validity.
1181:
1182: my @scriptlines = split(/\n/, $script); # one line per element.
1183: my $linecount = scalar(@scriptlines);
1184: for(my $i = 0; $i < $linecount; $i++) {
1185: chomp($scriptlines[$i]);
1186: if(!isValidEditCommand($scriptlines[$i])) {
1187: return "error:edit with bad script line: '$scriptlines[$i]' \n";
1188: }
1189: }
1190:
1191: # Execute the edit operation.
1192: # - Create a config file editor for the appropriate file and
1193: # - execute each command in the script:
1194: #
1195: my $configfile = ConfigFileFromSelector($filetype);
1196: if (!(defined $configfile)) {
1197: return "refused\n";
1198: }
1199: my $editor = ConfigFileEdit->new($configfile);
1200:
1201: for (my $i = 0; $i < $linecount; $i++) {
1202: ApplyEdit($scriptlines[$i], $editor);
1203: }
1204: # If the file is the host file, ensure that our host is
1205: # adjusted to have our ip:
1206: #
1207: if($filetype eq "host") {
1208: AdjustOurHost($editor);
1209: }
1210: # Finally replace the current file with our file.
1211: #
1212: ReplaceConfigFile($configfile, $editor);
1213:
1214: return "ok\n";
1215: }
1216:
1217: # read_profile
1218: #
1219: # Returns a set of specific entries from a user's profile file.
1220: # this is a utility function that is used by both get_profile_entry and
1221: # get_profile_entry_encrypted.
1222: #
1223: # Parameters:
1224: # udom - Domain in which the user exists.
1225: # uname - User's account name (loncapa account)
1226: # namespace - The profile namespace to open.
1227: # what - A set of & separated queries.
1228: # Returns:
1229: # If all ok: - The string that needs to be shipped back to the user.
1230: # If failure - A string that starts with error: followed by the failure
1231: # reason.. note that this probabyl gets shipped back to the
1232: # user as well.
1233: #
1234: sub read_profile {
1235: my ($udom, $uname, $namespace, $what) = @_;
1236:
1237: my $hashref = &tie_user_hash($udom, $uname, $namespace,
1238: &GDBM_READER());
1239: if ($hashref) {
1240: my @queries=split(/\&/,$what);
1241: if ($namespace eq 'roles') {
1242: @queries = map { &unescape($_); } @queries;
1243: }
1244: my $qresult='';
1245:
1246: for (my $i=0;$i<=$#queries;$i++) {
1247: $qresult.="$hashref->{$queries[$i]}&"; # Presumably failure gives empty string.
1248: }
1249: $qresult=~s/\&$//; # Remove trailing & from last lookup.
1250: if (&untie_user_hash($hashref)) {
1251: return $qresult;
1252: } else {
1253: return "error: ".($!+0)." untie (GDBM) Failed";
1254: }
1255: } else {
1256: if ($!+0 == 2) {
1257: return "error:No such file or GDBM reported bad block error";
1258: } else {
1259: return "error: ".($!+0)." tie (GDBM) Failed";
1260: }
1261: }
1262:
1263: }
1264: #--------------------- Request Handlers --------------------------------------------
1265: #
1266: # By convention each request handler registers itself prior to the sub
1267: # declaration:
1268: #
1269:
1270: #++
1271: #
1272: # Handles ping requests.
1273: # Parameters:
1274: # $cmd - the actual keyword that invoked us.
1275: # $tail - the tail of the request that invoked us.
1276: # $replyfd- File descriptor connected to the client
1277: # Implicit Inputs:
1278: # $currenthostid - Global variable that carries the name of the host we are
1279: # known as.
1280: # Returns:
1281: # 1 - Ok to continue processing.
1282: # 0 - Program should exit.
1283: # Side effects:
1284: # Reply information is sent to the client.
1285: sub ping_handler {
1286: my ($cmd, $tail, $client) = @_;
1287: Debug("$cmd $tail $client .. $currenthostid:");
1288:
1289: Reply( $client,\$currenthostid,"$cmd:$tail");
1290:
1291: return 1;
1292: }
1293: ®ister_handler("ping", \&ping_handler, 0, 1, 1); # Ping unencoded, client or manager.
1294:
1295: #++
1296: #
1297: # Handles pong requests. Pong replies with our current host id, and
1298: # the results of a ping sent to us via our lonc.
1299: #
1300: # Parameters:
1301: # $cmd - the actual keyword that invoked us.
1302: # $tail - the tail of the request that invoked us.
1303: # $replyfd- File descriptor connected to the client
1304: # Implicit Inputs:
1305: # $currenthostid - Global variable that carries the name of the host we are
1306: # connected to.
1307: # Returns:
1308: # 1 - Ok to continue processing.
1309: # 0 - Program should exit.
1310: # Side effects:
1311: # Reply information is sent to the client.
1312: sub pong_handler {
1313: my ($cmd, $tail, $replyfd) = @_;
1314:
1315: my $reply=&Apache::lonnet::reply("ping",$clientname);
1316: &Reply( $replyfd, "$currenthostid:$reply\n", "$cmd:$tail");
1317: return 1;
1318: }
1319: ®ister_handler("pong", \&pong_handler, 0, 1, 1); # Pong unencoded, client or manager
1320:
1321: #++
1322: # Called to establish an encrypted session key with the remote client.
1323: # Note that with secure lond, in most cases this function is never
1324: # invoked. Instead, the secure session key is established either
1325: # via a local file that's locked down tight and only lives for a short
1326: # time, or via an ssl tunnel...and is generated from a bunch-o-random
1327: # bits from /dev/urandom, rather than the predictable pattern used by
1328: # by this sub. This sub is only used in the old-style insecure
1329: # key negotiation.
1330: # Parameters:
1331: # $cmd - the actual keyword that invoked us.
1332: # $tail - the tail of the request that invoked us.
1333: # $replyfd- File descriptor connected to the client
1334: # Implicit Inputs:
1335: # $currenthostid - Global variable that carries the name of the host
1336: # known as.
1337: # $clientname - Global variable that carries the name of the host we're connected to.
1338: # Returns:
1339: # 1 - Ok to continue processing.
1340: # 0 - Program should exit.
1341: # Implicit Outputs:
1342: # Reply information is sent to the client.
1343: # $cipher is set with a reference to a new IDEA encryption object.
1344: #
1345: sub establish_key_handler {
1346: my ($cmd, $tail, $replyfd) = @_;
1347:
1348: my $buildkey=time.$$.int(rand 100000);
1349: $buildkey=~tr/1-6/A-F/;
1350: $buildkey=int(rand 100000).$buildkey.int(rand 100000);
1351: my $key=$currenthostid.$clientname;
1352: $key=~tr/a-z/A-Z/;
1353: $key=~tr/G-P/0-9/;
1354: $key=~tr/Q-Z/0-9/;
1355: $key=$key.$buildkey.$key.$buildkey.$key.$buildkey;
1356: $key=substr($key,0,32);
1357: my $cipherkey=pack("H32",$key);
1358: $cipher=new IDEA $cipherkey;
1359: &Reply($replyfd, \$buildkey, "$cmd:$tail");
1360:
1361: return 1;
1362:
1363: }
1364: ®ister_handler("ekey", \&establish_key_handler, 0, 1,1);
1365:
1366: # Handler for the load command. Returns the current system load average
1367: # to the requestor.
1368: #
1369: # Parameters:
1370: # $cmd - the actual keyword that invoked us.
1371: # $tail - the tail of the request that invoked us.
1372: # $replyfd- File descriptor connected to the client
1373: # Implicit Inputs:
1374: # $currenthostid - Global variable that carries the name of the host
1375: # known as.
1376: # $clientname - Global variable that carries the name of the host we're connected to.
1377: # Returns:
1378: # 1 - Ok to continue processing.
1379: # 0 - Program should exit.
1380: # Side effects:
1381: # Reply information is sent to the client.
1382: sub load_handler {
1383: my ($cmd, $tail, $replyfd) = @_;
1384:
1385:
1386:
1387: # Get the load average from /proc/loadavg and calculate it as a percentage of
1388: # the allowed load limit as set by the perl global variable lonLoadLim
1389:
1390: my $loadavg;
1391: my $loadfile=IO::File->new('/proc/loadavg');
1392:
1393: $loadavg=<$loadfile>;
1394: $loadavg =~ s/\s.*//g; # Extract the first field only.
1395:
1396: my $loadpercent=100*$loadavg/$perlvar{'lonLoadLim'};
1397:
1398: &Reply( $replyfd, \$loadpercent, "$cmd:$tail");
1399:
1400: return 1;
1401: }
1402: ®ister_handler("load", \&load_handler, 0, 1, 0);
1403:
1404: #
1405: # Process the userload request. This sub returns to the client the current
1406: # user load average. It can be invoked either by clients or managers.
1407: #
1408: # Parameters:
1409: # $cmd - the actual keyword that invoked us.
1410: # $tail - the tail of the request that invoked us.
1411: # $replyfd- File descriptor connected to the client
1412: # Implicit Inputs:
1413: # $currenthostid - Global variable that carries the name of the host
1414: # known as.
1415: # $clientname - Global variable that carries the name of the host we're connected to.
1416: # Returns:
1417: # 1 - Ok to continue processing.
1418: # 0 - Program should exit
1419: # Implicit inputs:
1420: # whatever the userload() function requires.
1421: # Implicit outputs:
1422: # the reply is written to the client.
1423: #
1424: sub user_load_handler {
1425: my ($cmd, $tail, $replyfd) = @_;
1426:
1427: my $userloadpercent=&Apache::lonnet::userload();
1428: &Reply($replyfd, \$userloadpercent, "$cmd:$tail");
1429:
1430: return 1;
1431: }
1432: ®ister_handler("userload", \&user_load_handler, 0, 1, 0);
1433:
1434: # Process a request for the authorization type of a user:
1435: # (userauth).
1436: #
1437: # Parameters:
1438: # $cmd - the actual keyword that invoked us.
1439: # $tail - the tail of the request that invoked us.
1440: # $replyfd- File descriptor connected to the client
1441: # Returns:
1442: # 1 - Ok to continue processing.
1443: # 0 - Program should exit
1444: # Implicit outputs:
1445: # The user authorization type is written to the client.
1446: #
1447: sub user_authorization_type {
1448: my ($cmd, $tail, $replyfd) = @_;
1449:
1450: my $userinput = "$cmd:$tail";
1451:
1452: # Pull the domain and username out of the command tail.
1453: # and call get_auth_type to determine the authentication type.
1454:
1455: my ($udom,$uname)=split(/:/,$tail);
1456: my $result = &get_auth_type($udom, $uname);
1457: if($result eq "nouser") {
1458: &Failure( $replyfd, "unknown_user\n", $userinput);
1459: } else {
1460: #
1461: # We only want to pass the second field from get_auth_type
1462: # for ^krb.. otherwise we'll be handing out the encrypted
1463: # password for internals e.g.
1464: #
1465: my ($type,$otherinfo) = split(/:/,$result);
1466: if($type =~ /^krb/) {
1467: $type = $result;
1468: } else {
1469: $type .= ':';
1470: }
1471: &Reply( $replyfd, \$type, $userinput);
1472: }
1473:
1474: return 1;
1475: }
1476: ®ister_handler("currentauth", \&user_authorization_type, 1, 1, 0);
1477:
1478: # Process a request by a manager to push a hosts or domain table
1479: # to us. We pick apart the command and pass it on to the subs
1480: # that already exist to do this.
1481: #
1482: # Parameters:
1483: # $cmd - the actual keyword that invoked us.
1484: # $tail - the tail of the request that invoked us.
1485: # $client - File descriptor connected to the client
1486: # Returns:
1487: # 1 - Ok to continue processing.
1488: # 0 - Program should exit
1489: # Implicit Output:
1490: # a reply is written to the client.
1491: sub push_file_handler {
1492: my ($cmd, $tail, $client) = @_;
1493: &Debug("In push file handler");
1494: my $userinput = "$cmd:$tail";
1495:
1496: # At this time we only know that the IP of our partner is a valid manager
1497: # the code below is a hook to do further authentication (e.g. to resolve
1498: # spoofing).
1499:
1500: my $cert = &GetCertificate($userinput);
1501: if(&ValidManager($cert)) {
1502: &Debug("Valid manager: $client");
1503:
1504: # Now presumably we have the bona fides of both the peer host and the
1505: # process making the request.
1506:
1507: my $reply = &PushFile($userinput);
1508: &Reply($client, \$reply, $userinput);
1509:
1510: } else {
1511: &logthis("push_file_handler $client is not valid");
1512: &Failure( $client, "refused\n", $userinput);
1513: }
1514: return 1;
1515: }
1516: ®ister_handler("pushfile", \&push_file_handler, 1, 0, 1);
1517:
1518: # The du_handler routine should be considered obsolete and is retained
1519: # for communication with legacy servers. Please see the du2_handler.
1520: #
1521: # du - list the disk usage of a directory recursively.
1522: #
1523: # note: stolen code from the ls file handler
1524: # under construction by Rick Banghart
1525: # .
1526: # Parameters:
1527: # $cmd - The command that dispatched us (du).
1528: # $ududir - The directory path to list... I'm not sure what this
1529: # is relative as things like ls:. return e.g.
1530: # no_such_dir.
1531: # $client - Socket open on the client.
1532: # Returns:
1533: # 1 - indicating that the daemon should not disconnect.
1534: # Side Effects:
1535: # The reply is written to $client.
1536: #
1537: sub du_handler {
1538: my ($cmd, $ududir, $client) = @_;
1539: ($ududir) = split(/:/,$ududir); # Make 'telnet' testing easier.
1540: my $userinput = "$cmd:$ududir";
1541:
1542: if ($ududir=~/\.\./ || $ududir!~m|^/home/httpd/|) {
1543: &Failure($client,"refused\n","$cmd:$ududir");
1544: return 1;
1545: }
1546: # Since $ududir could have some nasties in it,
1547: # we will require that ududir is a valid
1548: # directory. Just in case someone tries to
1549: # slip us a line like .;(cd /home/httpd rm -rf*)
1550: # etc.
1551: #
1552: if (-d $ududir) {
1553: my $total_size=0;
1554: my $code=sub {
1555: if ($_=~/\.\d+\./) { return;}
1556: if ($_=~/\.meta$/) { return;}
1557: if (-d $_) { return;}
1558: $total_size+=(stat($_))[7];
1559: };
1560: chdir($ududir);
1561: find($code,$ududir);
1562: $total_size=int($total_size/1024);
1563: &Reply($client,\$total_size,"$cmd:$ududir");
1564: } else {
1565: &Failure($client, "bad_directory:$ududir\n","$cmd:$ududir");
1566: }
1567: return 1;
1568: }
1569: ®ister_handler("du", \&du_handler, 0, 1, 0);
1570:
1571: # Please also see the du_handler, which is obsoleted by du2.
1572: # du2_handler differs from du_handler in that required path to directory
1573: # provided by &propath() is prepended in the handler instead of on the
1574: # client side.
1575: #
1576: # du2 - list the disk usage of a directory recursively.
1577: #
1578: # Parameters:
1579: # $cmd - The command that dispatched us (du).
1580: # $tail - The tail of the request that invoked us.
1581: # $tail is a : separated list of the following:
1582: # - $ududir - directory path to list (before prepending)
1583: # - $getpropath = 1 if &propath() should prepend
1584: # - $uname - username to use for &propath or user dir
1585: # - $udom - domain to use for &propath or user dir
1586: # All are escaped.
1587: # $client - Socket open on the client.
1588: # Returns:
1589: # 1 - indicating that the daemon should not disconnect.
1590: # Side Effects:
1591: # The reply is written to $client.
1592: #
1593:
1594: sub du2_handler {
1595: my ($cmd, $tail, $client) = @_;
1596: my ($ududir,$getpropath,$uname,$udom) = map { &unescape($_) } (split(/:/, $tail));
1597: my $userinput = "$cmd:$tail";
1598: if (($ududir=~/\.\./) || (($ududir!~m|^/home/httpd/|) && (!$getpropath))) {
1599: &Failure($client,"refused\n","$cmd:$tail");
1600: return 1;
1601: }
1602: if ($getpropath) {
1603: if (($uname =~ /^$LONCAPA::match_name$/) && ($udom =~ /^$LONCAPA::match_domain$/)) {
1604: $ududir = &propath($udom,$uname).'/'.$ududir;
1605: } else {
1606: &Failure($client,"refused\n","$cmd:$tail");
1607: return 1;
1608: }
1609: }
1610: # Since $ududir could have some nasties in it,
1611: # we will require that ududir is a valid
1612: # directory. Just in case someone tries to
1613: # slip us a line like .;(cd /home/httpd rm -rf*)
1614: # etc.
1615: #
1616: if (-d $ududir) {
1617: my $total_size=0;
1618: my $code=sub {
1619: if ($_=~/\.\d+\./) { return;}
1620: if ($_=~/\.meta$/) { return;}
1621: if (-d $_) { return;}
1622: $total_size+=(stat($_))[7];
1623: };
1624: chdir($ududir);
1625: find($code,$ududir);
1626: $total_size=int($total_size/1024);
1627: &Reply($client,\$total_size,"$cmd:$ududir");
1628: } else {
1629: &Failure($client, "bad_directory:$ududir\n","$cmd:$tail");
1630: }
1631: return 1;
1632: }
1633: ®ister_handler("du2", \&du2_handler, 0, 1, 0);
1634:
1635: #
1636: # The ls_handler routine should be considered obsolete and is retained
1637: # for communication with legacy servers. Please see the ls3_handler.
1638: #
1639: # ls - list the contents of a directory. For each file in the
1640: # selected directory the filename followed by the full output of
1641: # the stat function is returned. The returned info for each
1642: # file are separated by ':'. The stat fields are separated by &'s.
1643: #
1644: # If the requested path contains /../ or is:
1645: #
1646: # 1. for a directory, and the path does not begin with one of:
1647: # (a) /home/httpd/html/res/<domain>
1648: # (b) /home/httpd/html/userfiles/
1649: # (c) /home/httpd/lonUsers/<domain>/<1>/<2>/<3>/<username>/userfiles
1650: # or is:
1651: #
1652: # 2. for a file, and the path (after prepending) does not begin with one of:
1653: # (a) /home/httpd/lonUsers/<domain>/<1>/<2>/<3>/<username>/
1654: # (b) /home/httpd/html/res/<domain>/<username>/
1655: # (c) /home/httpd/html/userfiles/<domain>/<username>/
1656: #
1657: # the response will be "refused".
1658: #
1659: # Parameters:
1660: # $cmd - The command that dispatched us (ls).
1661: # $ulsdir - The directory path to list... I'm not sure what this
1662: # is relative as things like ls:. return e.g.
1663: # no_such_dir.
1664: # $client - Socket open on the client.
1665: # Returns:
1666: # 1 - indicating that the daemon should not disconnect.
1667: # Side Effects:
1668: # The reply is written to $client.
1669: #
1670: sub ls_handler {
1671: # obsoleted by ls2_handler
1672: my ($cmd, $ulsdir, $client) = @_;
1673:
1674: my $userinput = "$cmd:$ulsdir";
1675:
1676: my $obs;
1677: my $rights;
1678: my $ulsout='';
1679: my $ulsfn;
1680: if ($ulsdir =~m{/\.\./}) {
1681: &Failure($client,"refused\n",$userinput);
1682: return 1;
1683: }
1684: if (-e $ulsdir) {
1685: if(-d $ulsdir) {
1686: unless (($ulsdir =~ m{^/home/httpd/html/(res/$LONCAPA::match_domain|userfiles/)}) ||
1687: ($ulsdir =~ m{^/home/httpd/lonUsers/$LONCAPA::match_domain(?:/[\w\-.@]){3}/$LONCAPA::match_name/userfiles})) {
1688: &Failure($client,"refused\n",$userinput);
1689: return 1;
1690: }
1691: if (opendir(LSDIR,$ulsdir)) {
1692: while ($ulsfn=readdir(LSDIR)) {
1693: undef($obs);
1694: undef($rights);
1695: my @ulsstats=stat($ulsdir.'/'.$ulsfn);
1696: #We do some obsolete checking here
1697: if(-e $ulsdir.'/'.$ulsfn.".meta") {
1698: open(FILE, $ulsdir.'/'.$ulsfn.".meta");
1699: my @obsolete=<FILE>;
1700: foreach my $obsolete (@obsolete) {
1701: if($obsolete =~ m/(<obsolete>)(on|1)/) { $obs = 1; }
1702: if($obsolete =~ m|(<copyright>)(default)|) { $rights = 1; }
1703: }
1704: }
1705: $ulsout.=$ulsfn.'&'.join('&',@ulsstats);
1706: if($obs eq '1') { $ulsout.="&1"; }
1707: else { $ulsout.="&0"; }
1708: if($rights eq '1') { $ulsout.="&1:"; }
1709: else { $ulsout.="&0:"; }
1710: }
1711: closedir(LSDIR);
1712: }
1713: } else {
1714: unless (($ulsdir =~ m{^/home/httpd/lonUsers/$LONCAPA::match_domain(?:/[\w\-.@]){3}/$LONCAPA::match_name/}) ||
1715: ($ulsdir =~ m{^/home/httpd/html/(?:res|userfiles)/$LONCAPA::match_domain/$LONCAPA::match_name/})) {
1716: &Failure($client,"refused\n",$userinput);
1717: return 1;
1718: }
1719: my @ulsstats=stat($ulsdir);
1720: $ulsout.=$ulsfn.'&'.join('&',@ulsstats).':';
1721: }
1722: } else {
1723: $ulsout='no_such_dir';
1724: }
1725: if ($ulsout eq '') { $ulsout='empty'; }
1726: &Reply($client, \$ulsout, $userinput); # This supports debug logging.
1727:
1728: return 1;
1729:
1730: }
1731: ®ister_handler("ls", \&ls_handler, 0, 1, 0);
1732:
1733: # The ls2_handler routine should be considered obsolete and is retained
1734: # for communication with legacy servers. Please see the ls3_handler.
1735: # Please also see the ls_handler, which was itself obsoleted by ls2.
1736: # ls2_handler differs from ls_handler in that it escapes its return
1737: # values before concatenating them together with ':'s.
1738: #
1739: # ls2 - list the contents of a directory. For each file in the
1740: # selected directory the filename followed by the full output of
1741: # the stat function is returned. The returned info for each
1742: # file are separated by ':'. The stat fields are separated by &'s.
1743: #
1744: # If the requested path contains /../ or is:
1745: #
1746: # 1. for a directory, and the path does not begin with one of:
1747: # (a) /home/httpd/html/res/<domain>
1748: # (b) /home/httpd/html/userfiles/
1749: # (c) /home/httpd/lonUsers/<domain>/<1>/<2>/<3>/<username>/userfiles
1750: # or is:
1751: #
1752: # 2. for a file, and the path (after prepending) does not begin with one of:
1753: # (a) /home/httpd/lonUsers/<domain>/<1>/<2>/<3>/<username>/
1754: # (b) /home/httpd/html/res/<domain>/<username>/
1755: # (c) /home/httpd/html/userfiles/<domain>/<username>/
1756: #
1757: # the response will be "refused".
1758: #
1759: # Parameters:
1760: # $cmd - The command that dispatched us (ls).
1761: # $ulsdir - The directory path to list... I'm not sure what this
1762: # is relative as things like ls:. return e.g.
1763: # no_such_dir.
1764: # $client - Socket open on the client.
1765: # Returns:
1766: # 1 - indicating that the daemon should not disconnect.
1767: # Side Effects:
1768: # The reply is written to $client.
1769: #
1770: sub ls2_handler {
1771: my ($cmd, $ulsdir, $client) = @_;
1772:
1773: my $userinput = "$cmd:$ulsdir";
1774:
1775: my $obs;
1776: my $rights;
1777: my $ulsout='';
1778: my $ulsfn;
1779: if ($ulsdir =~m{/\.\./}) {
1780: &Failure($client,"refused\n",$userinput);
1781: return 1;
1782: }
1783: if (-e $ulsdir) {
1784: if(-d $ulsdir) {
1785: unless (($ulsdir =~ m{^/home/httpd/html/(res/$LONCAPA::match_domain|userfiles/)}) ||
1786: ($ulsdir =~ m{^/home/httpd/lonUsers/$LONCAPA::match_domain(?:/[\w\-.@]){3}/$LONCAPA::match_name/userfiles})) {
1787: &Failure($client,"refused\n","$userinput");
1788: return 1;
1789: }
1790: if (opendir(LSDIR,$ulsdir)) {
1791: while ($ulsfn=readdir(LSDIR)) {
1792: undef($obs);
1793: undef($rights);
1794: my @ulsstats=stat($ulsdir.'/'.$ulsfn);
1795: #We do some obsolete checking here
1796: if(-e $ulsdir.'/'.$ulsfn.".meta") {
1797: open(FILE, $ulsdir.'/'.$ulsfn.".meta");
1798: my @obsolete=<FILE>;
1799: foreach my $obsolete (@obsolete) {
1800: if($obsolete =~ m/(<obsolete>)(on|1)/) { $obs = 1; }
1801: if($obsolete =~ m|(<copyright>)(default)|) {
1802: $rights = 1;
1803: }
1804: }
1805: }
1806: my $tmp = $ulsfn.'&'.join('&',@ulsstats);
1807: if ($obs eq '1') { $tmp.="&1"; } else { $tmp.="&0"; }
1808: if ($rights eq '1') { $tmp.="&1"; } else { $tmp.="&0"; }
1809: $ulsout.= &escape($tmp).':';
1810: }
1811: closedir(LSDIR);
1812: }
1813: } else {
1814: unless (($ulsdir =~ m{^/home/httpd/lonUsers/$LONCAPA::match_domain(?:/[\w\-.@]){3}/$LONCAPA::match_name/}) ||
1815: ($ulsdir =~ m{^/home/httpd/html/(?:res|userfiles)/$LONCAPA::match_domain/$LONCAPA::match_name/})) {
1816: &Failure($client,"refused\n",$userinput);
1817: return 1;
1818: }
1819: my @ulsstats=stat($ulsdir);
1820: $ulsout.=$ulsfn.'&'.join('&',@ulsstats).':';
1821: }
1822: } else {
1823: $ulsout='no_such_dir';
1824: }
1825: if ($ulsout eq '') { $ulsout='empty'; }
1826: &Reply($client, \$ulsout, $userinput); # This supports debug logging.
1827: return 1;
1828: }
1829: ®ister_handler("ls2", \&ls2_handler, 0, 1, 0);
1830: #
1831: # ls3 - list the contents of a directory. For each file in the
1832: # selected directory the filename followed by the full output of
1833: # the stat function is returned. The returned info for each
1834: # file are separated by ':'. The stat fields are separated by &'s.
1835: #
1836: # If the requested path (after prepending) contains /../ or is:
1837: #
1838: # 1. for a directory, and the path does not begin with one of:
1839: # (a) /home/httpd/html/res/<domain>
1840: # (b) /home/httpd/html/userfiles/
1841: # (c) /home/httpd/lonUsers/<domain>/<1>/<2>/<3>/<username>/userfiles
1842: # (d) /home/httpd/html/priv/<domain> and client is the homeserver
1843: #
1844: # or is:
1845: #
1846: # 2. for a file, and the path (after prepending) does not begin with one of:
1847: # (a) /home/httpd/lonUsers/<domain>/<1>/<2>/<3>/<username>/
1848: # (b) /home/httpd/html/res/<domain>/<username>/
1849: # (c) /home/httpd/html/userfiles/<domain>/<username>/
1850: # (d) /home/httpd/html/priv/<domain>/<username>/ and client is the homeserver
1851: #
1852: # the response will be "refused".
1853: #
1854: # Parameters:
1855: # $cmd - The command that dispatched us (ls).
1856: # $tail - The tail of the request that invoked us.
1857: # $tail is a : separated list of the following:
1858: # - $ulsdir - directory path to list (before prepending)
1859: # - $getpropath = 1 if &propath() should prepend
1860: # - $getuserdir = 1 if path to user dir in lonUsers should
1861: # prepend
1862: # - $alternate_root - path to prepend
1863: # - $uname - username to use for &propath or user dir
1864: # - $udom - domain to use for &propath or user dir
1865: # All of these except $getpropath and &getuserdir are escaped.
1866: # no_such_dir.
1867: # $client - Socket open on the client.
1868: # Returns:
1869: # 1 - indicating that the daemon should not disconnect.
1870: # Side Effects:
1871: # The reply is written to $client.
1872: #
1873:
1874: sub ls3_handler {
1875: my ($cmd, $tail, $client) = @_;
1876: my $userinput = "$cmd:$tail";
1877: my ($ulsdir,$getpropath,$getuserdir,$alternate_root,$uname,$udom) =
1878: split(/:/,$tail);
1879: if (defined($ulsdir)) {
1880: $ulsdir = &unescape($ulsdir);
1881: }
1882: if (defined($alternate_root)) {
1883: $alternate_root = &unescape($alternate_root);
1884: }
1885: if (defined($uname)) {
1886: $uname = &unescape($uname);
1887: }
1888: if (defined($udom)) {
1889: $udom = &unescape($udom);
1890: }
1891:
1892: my $dir_root = $perlvar{'lonDocRoot'};
1893: if (($getpropath) || ($getuserdir)) {
1894: if (($uname =~ /^$LONCAPA::match_name$/) && ($udom =~ /^$LONCAPA::match_domain$/)) {
1895: $dir_root = &propath($udom,$uname);
1896: $dir_root =~ s/\/$//;
1897: } else {
1898: &Failure($client,"refused\n",$userinput);
1899: return 1;
1900: }
1901: } elsif ($alternate_root ne '') {
1902: $dir_root = $alternate_root;
1903: }
1904: if (($dir_root ne '') && ($dir_root ne '/')) {
1905: if ($ulsdir =~ /^\//) {
1906: $ulsdir = $dir_root.$ulsdir;
1907: } else {
1908: $ulsdir = $dir_root.'/'.$ulsdir;
1909: }
1910: }
1911: if ($ulsdir =~m{/\.\./}) {
1912: &Failure($client,"refused\n",$userinput);
1913: return 1;
1914: }
1915: my $islocal;
1916: my @machine_ids = &Apache::lonnet::current_machine_ids();
1917: if (grep(/^\Q$clientname\E$/,@machine_ids)) {
1918: $islocal = 1;
1919: }
1920: my $obs;
1921: my $rights;
1922: my $ulsout='';
1923: my $ulsfn;
1924:
1925: my ($crscheck,$toplevel,$currdom,$currnum,$skip);
1926: unless ($islocal) {
1927: my ($major,$minor) = split(/\./,$clientversion);
1928: if (($major < 2) || ($major == 2 && $minor < 12)) {
1929: $crscheck = 1;
1930: }
1931: }
1932: if (-e $ulsdir) {
1933: if(-d $ulsdir) {
1934: unless (($getpropath) || ($getuserdir) ||
1935: ($ulsdir =~ m{^/home/httpd/html/(res/$LONCAPA::match_domain|userfiles/)}) ||
1936: ($ulsdir =~ m{^/home/httpd/lonUsers/$LONCAPA::match_domain(?:/[\w\-.@]){3}/$LONCAPA::match_name/userfiles}) ||
1937: (($ulsdir =~ m{^/home/httpd/html/priv/$LONCAPA::match_domain}) && ($islocal))) {
1938: &Failure($client,"refused\n",$userinput);
1939: return 1;
1940: }
1941: if (($crscheck) &&
1942: ($ulsdir =~ m{^/home/httpd/html/res/($LONCAPA::match_domain)(/?$|/$LONCAPA::match_courseid)})) {
1943: ($currdom,my $posscnum) = ($1,$2);
1944: if (($posscnum eq '') || ($posscnum eq '/')) {
1945: $toplevel = 1;
1946: } else {
1947: $posscnum =~ s{^/+}{};
1948: if (&LONCAPA::Lond::is_course($currdom,$posscnum)) {
1949: $skip = 1;
1950: }
1951: }
1952: }
1953: if ((!$skip) && (opendir(LSDIR,$ulsdir))) {
1954: while ($ulsfn=readdir(LSDIR)) {
1955: if (($crscheck) && ($toplevel) && ($currdom ne '') &&
1956: ($ulsfn =~ /^$LONCAPA::match_courseid$/) && (-d "$ulsdir/$ulsfn")) {
1957: if (&LONCAPA::Lond::is_course($currdom,$ulsfn)) {
1958: next;
1959: }
1960: }
1961: undef($obs);
1962: undef($rights);
1963: my @ulsstats=stat($ulsdir.'/'.$ulsfn);
1964: #We do some obsolete checking here
1965: if(-e $ulsdir.'/'.$ulsfn.".meta") {
1966: open(FILE, $ulsdir.'/'.$ulsfn.".meta");
1967: my @obsolete=<FILE>;
1968: foreach my $obsolete (@obsolete) {
1969: if($obsolete =~ m/(<obsolete>)(on|1)/) { $obs = 1; }
1970: if($obsolete =~ m|(<copyright>)(default)|) {
1971: $rights = 1;
1972: }
1973: }
1974: }
1975: my $tmp = $ulsfn.'&'.join('&',@ulsstats);
1976: if ($obs eq '1') { $tmp.="&1"; } else { $tmp.="&0"; }
1977: if ($rights eq '1') { $tmp.="&1"; } else { $tmp.="&0"; }
1978: $ulsout.= &escape($tmp).':';
1979: }
1980: closedir(LSDIR);
1981: }
1982: } else {
1983: unless (($getpropath) || ($getuserdir) ||
1984: ($ulsdir =~ m{^/home/httpd/lonUsers/$LONCAPA::match_domain(?:/[\w\-.@]){3}/$LONCAPA::match_name/}) ||
1985: ($ulsdir =~ m{^/home/httpd/html/(?:res|userfiles)/$LONCAPA::match_domain/$LONCAPA::match_name/}) ||
1986: (($ulsdir =~ m{^/home/httpd/html/priv/$LONCAPA::match_domain/$LONCAPA::match_name/}) && ($islocal))) {
1987: &Failure($client,"refused\n",$userinput);
1988: return 1;
1989: }
1990: my @ulsstats=stat($ulsdir);
1991: $ulsout.=$ulsfn.'&'.join('&',@ulsstats).':';
1992: }
1993: } else {
1994: $ulsout='no_such_dir';
1995: }
1996: if ($ulsout eq '') { $ulsout='empty'; }
1997: &Reply($client, \$ulsout, $userinput); # This supports debug logging.
1998: return 1;
1999: }
2000: ®ister_handler("ls3", \&ls3_handler, 0, 1, 0);
2001:
2002: sub read_lonnet_global {
2003: my ($cmd,$tail,$client) = @_;
2004: my $userinput = "$cmd:$tail";
2005: my $requested = &Apache::lonnet::thaw_unescape($tail);
2006: my $result;
2007: my %packagevars = (
2008: spareid => \%Apache::lonnet::spareid,
2009: perlvar => \%Apache::lonnet::perlvar,
2010: );
2011: my %limit_to = (
2012: perlvar => {
2013: lonOtherAuthen => 1,
2014: lonBalancer => 1,
2015: lonVersion => 1,
2016: lonAdmEMail => 1,
2017: lonSupportEMail => 1,
2018: lonSysEMail => 1,
2019: lonHostID => 1,
2020: lonRole => 1,
2021: lonDefDomain => 1,
2022: lonLoadLim => 1,
2023: lonUserLoadLim => 1,
2024: }
2025: );
2026: if (ref($requested) eq 'HASH') {
2027: foreach my $what (keys(%{$requested})) {
2028: my $response;
2029: my $items = {};
2030: if (exists($packagevars{$what})) {
2031: if (ref($limit_to{$what}) eq 'HASH') {
2032: foreach my $varname (keys(%{$packagevars{$what}})) {
2033: if ($limit_to{$what}{$varname}) {
2034: $items->{$varname} = $packagevars{$what}{$varname};
2035: }
2036: }
2037: } else {
2038: $items = $packagevars{$what};
2039: }
2040: if ($what eq 'perlvar') {
2041: if (!exists($packagevars{$what}{'lonBalancer'})) {
2042: if ($dist =~ /^(centos|rhes|fedora|scientific|oracle|rocky|alma)/) {
2043: my $othervarref=LONCAPA::Configuration::read_conf('httpd.conf');
2044: if (ref($othervarref) eq 'HASH') {
2045: $items->{'lonBalancer'} = $othervarref->{'lonBalancer'};
2046: }
2047: }
2048: }
2049: }
2050: $response = &Apache::lonnet::freeze_escape($items);
2051: }
2052: $result .= &escape($what).'='.$response.'&';
2053: }
2054: }
2055: $result =~ s/\&$//;
2056: &Reply($client,\$result,$userinput);
2057: return 1;
2058: }
2059: ®ister_handler("readlonnetglobal", \&read_lonnet_global, 0, 1, 0);
2060:
2061: sub server_devalidatecache_handler {
2062: my ($cmd,$tail,$client) = @_;
2063: my $userinput = "$cmd:$tail";
2064: my $items = &unescape($tail);
2065: my @cached = split(/\&/,$items);
2066: foreach my $key (@cached) {
2067: if ($key =~ /:/) {
2068: my ($name,$id) = map { &unescape($_); } split(/:/,$key);
2069: &Apache::lonnet::devalidate_cache_new($name,$id);
2070: }
2071: }
2072: my $result = 'ok';
2073: &Reply($client,\$result,$userinput);
2074: return 1;
2075: }
2076: ®ister_handler("devalidatecache", \&server_devalidatecache_handler, 0, 1, 0);
2077:
2078: sub server_timezone_handler {
2079: my ($cmd,$tail,$client) = @_;
2080: my $userinput = "$cmd:$tail";
2081: my $timezone;
2082: my $clockfile = '/etc/sysconfig/clock'; # Fedora/CentOS/SuSE
2083: my $tzfile = '/etc/timezone'; # Debian/Ubuntu
2084: if (-e $clockfile) {
2085: if (open(my $fh,"<$clockfile")) {
2086: while (<$fh>) {
2087: next if (/^[\#\s]/);
2088: if (/^(?:TIME)?ZONE\s*=\s*['"]?\s*([\w\/]+)/) {
2089: $timezone = $1;
2090: last;
2091: }
2092: }
2093: close($fh);
2094: }
2095: } elsif (-e $tzfile) {
2096: if (open(my $fh,"<$tzfile")) {
2097: $timezone = <$fh>;
2098: close($fh);
2099: chomp($timezone);
2100: if ($timezone =~ m{^Etc/(\w+)$}) {
2101: $timezone = $1;
2102: }
2103: }
2104: }
2105: &Reply($client,\$timezone,$userinput); # This supports debug logging.
2106: return 1;
2107: }
2108: ®ister_handler("servertimezone", \&server_timezone_handler, 0, 1, 0);
2109:
2110: sub server_loncaparev_handler {
2111: my ($cmd,$tail,$client) = @_;
2112: my $userinput = "$cmd:$tail";
2113: &Reply($client,\$perlvar{'lonVersion'},$userinput);
2114: return 1;
2115: }
2116: ®ister_handler("serverloncaparev", \&server_loncaparev_handler, 0, 1, 0);
2117:
2118: sub server_homeID_handler {
2119: my ($cmd,$tail,$client) = @_;
2120: my $userinput = "$cmd:$tail";
2121: &Reply($client,\$perlvar{'lonHostID'},$userinput);
2122: return 1;
2123: }
2124: ®ister_handler("serverhomeID", \&server_homeID_handler, 0, 1, 0);
2125:
2126: sub server_distarch_handler {
2127: my ($cmd,$tail,$client) = @_;
2128: my $userinput = "$cmd:$tail";
2129: my $reply = &distro_and_arch();
2130: &Reply($client,\$reply,$userinput);
2131: return 1;
2132: }
2133: ®ister_handler("serverdistarch", \&server_distarch_handler, 0, 1, 0);
2134:
2135: sub server_certs_handler {
2136: my ($cmd,$tail,$client) = @_;
2137: my $userinput = "$cmd:$tail";
2138: my $hostname = &Apache::lonnet::hostname($perlvar{'lonHostID'});
2139: my $result = &LONCAPA::Lond::server_certs(\%perlvar,$perlvar{'lonHostID'},$hostname);
2140: &Reply($client,\$result,$userinput);
2141: return;
2142: }
2143: ®ister_handler("servercerts", \&server_certs_handler, 0, 1, 0);
2144:
2145: # Process a reinit request. Reinit requests that either
2146: # lonc or lond be reinitialized so that an updated
2147: # host.tab or domain.tab can be processed.
2148: #
2149: # Parameters:
2150: # $cmd - the actual keyword that invoked us.
2151: # $tail - the tail of the request that invoked us.
2152: # $client - File descriptor connected to the client
2153: # Returns:
2154: # 1 - Ok to continue processing.
2155: # 0 - Program should exit
2156: # Implicit output:
2157: # a reply is sent to the client.
2158: #
2159: sub reinit_process_handler {
2160: my ($cmd, $tail, $client) = @_;
2161:
2162: my $userinput = "$cmd:$tail";
2163:
2164: my $cert = &GetCertificate($userinput);
2165: if(&ValidManager($cert)) {
2166: chomp($userinput);
2167: my $reply = &ReinitProcess($userinput);
2168: &Reply( $client, \$reply, $userinput);
2169: } else {
2170: &Failure( $client, "refused\n", $userinput);
2171: }
2172: return 1;
2173: }
2174: ®ister_handler("reinit", \&reinit_process_handler, 1, 0, 1);
2175:
2176: # Process the editing script for a table edit operation.
2177: # the editing operation must be encrypted and requested by
2178: # a manager host.
2179: #
2180: # Parameters:
2181: # $cmd - the actual keyword that invoked us.
2182: # $tail - the tail of the request that invoked us.
2183: # $client - File descriptor connected to the client
2184: # Returns:
2185: # 1 - Ok to continue processing.
2186: # 0 - Program should exit
2187: # Implicit output:
2188: # a reply is sent to the client.
2189: #
2190: sub edit_table_handler {
2191: my ($command, $tail, $client) = @_;
2192:
2193: my $userinput = "$command:$tail";
2194:
2195: my $cert = &GetCertificate($userinput);
2196: if(&ValidManager($cert)) {
2197: my($filetype, $script) = split(/:/, $tail);
2198: if (($filetype eq "hosts") ||
2199: ($filetype eq "domain")) {
2200: if($script ne "") {
2201: &Reply($client, # BUGBUG - EditFile
2202: &EditFile($userinput), # could fail.
2203: $userinput);
2204: } else {
2205: &Failure($client,"refused\n",$userinput);
2206: }
2207: } else {
2208: &Failure($client,"refused\n",$userinput);
2209: }
2210: } else {
2211: &Failure($client,"refused\n",$userinput);
2212: }
2213: return 1;
2214: }
2215: ®ister_handler("edit", \&edit_table_handler, 1, 0, 1);
2216:
2217: #
2218: # Authenticate a user against the LonCAPA authentication
2219: # database. Note that there are several authentication
2220: # possibilities:
2221: # - unix - The user can be authenticated against the unix
2222: # password file.
2223: # - internal - The user can be authenticated against a purely
2224: # internal per user password file.
2225: # - kerberos - The user can be authenticated against either a kerb4 or kerb5
2226: # ticket granting authority.
2227: # - user - The person tailoring LonCAPA can supply a user authentication
2228: # mechanism that is per system.
2229: #
2230: # Parameters:
2231: # $cmd - The command that got us here.
2232: # $tail - Tail of the command (remaining parameters).
2233: # $client - File descriptor connected to client.
2234: # Returns
2235: # 0 - Requested to exit, caller should shut down.
2236: # 1 - Continue processing.
2237: # Implicit inputs:
2238: # The authentication systems describe above have their own forms of implicit
2239: # input into the authentication process that are described above.
2240: #
2241: sub authenticate_handler {
2242: my ($cmd, $tail, $client) = @_;
2243:
2244:
2245: # Regenerate the full input line
2246:
2247: my $userinput = $cmd.":".$tail;
2248:
2249: # udom - User's domain.
2250: # uname - Username.
2251: # upass - User's password.
2252: # checkdefauth - Pass to validate_user() to try authentication
2253: # with default auth type(s) if no user account.
2254: # clientcancheckhost - Passed by clients with functionality in lonauth.pm
2255: # to check if session can be hosted.
2256:
2257: my ($udom, $uname, $upass, $checkdefauth, $clientcancheckhost)=split(/:/,$tail);
2258: &Debug(" Authenticate domain = $udom, user = $uname, password = $upass, checkdefauth = $checkdefauth");
2259: chomp($upass);
2260: $upass=&unescape($upass);
2261:
2262: my $pwdcorrect = &validate_user($udom,$uname,$upass,$checkdefauth);
2263: if($pwdcorrect) {
2264: my $canhost = 1;
2265: unless ($clientcancheckhost) {
2266: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
2267: my $uint_dom = &Apache::lonnet::internet_dom($uprimary_id);
2268: my @intdoms;
2269: my $internet_names = &Apache::lonnet::get_internet_names($clientname);
2270: if (ref($internet_names) eq 'ARRAY') {
2271: @intdoms = @{$internet_names};
2272: }
2273: unless ($uint_dom ne '' && grep(/^\Q$uint_dom\E$/,@intdoms)) {
2274: my ($remote,$hosted);
2275: my $remotesession = &get_usersession_config($udom,'remotesession');
2276: if (ref($remotesession) eq 'HASH') {
2277: $remote = $remotesession->{'remote'};
2278: }
2279: my $hostedsession = &get_usersession_config($clienthomedom,'hostedsession');
2280: if (ref($hostedsession) eq 'HASH') {
2281: $hosted = $hostedsession->{'hosted'};
2282: }
2283: $canhost = &Apache::lonnet::can_host_session($udom,$clientname,
2284: $clientversion,
2285: $remote,$hosted);
2286: }
2287: }
2288: if ($canhost) {
2289: &Reply( $client, "authorized\n", $userinput);
2290: } else {
2291: &Reply( $client, "not_allowed_to_host\n", $userinput);
2292: }
2293: #
2294: # Bad credentials: Failed to authorize
2295: #
2296: } else {
2297: &Failure( $client, "non_authorized\n", $userinput);
2298: }
2299:
2300: return 1;
2301: }
2302: ®ister_handler("auth", \&authenticate_handler, 1, 1, 0);
2303:
2304: #
2305: # Change a user's password. Note that this function is complicated by
2306: # the fact that a user may be authenticated in more than one way:
2307: # At present, we are not able to change the password for all types of
2308: # authentication methods. Only for:
2309: # unix - unix password or shadow passoword style authentication.
2310: # local - Locally written authentication mechanism.
2311: # For now, kerb4 and kerb5 password changes are not supported and result
2312: # in an error.
2313: # FUTURE WORK:
2314: # Support kerberos passwd changes?
2315: # Parameters:
2316: # $cmd - The command that got us here.
2317: # $tail - Tail of the command (remaining parameters).
2318: # $client - File descriptor connected to client.
2319: # Returns
2320: # 0 - Requested to exit, caller should shut down.
2321: # 1 - Continue processing.
2322: # Implicit inputs:
2323: # The authentication systems describe above have their own forms of implicit
2324: # input into the authentication process that are described above.
2325: sub change_password_handler {
2326: my ($cmd, $tail, $client) = @_;
2327:
2328: my $userinput = $cmd.":".$tail; # Reconstruct client's string.
2329:
2330: #
2331: # udom - user's domain.
2332: # uname - Username.
2333: # upass - Current password.
2334: # npass - New password.
2335: # context - Context in which this was called
2336: # (preferences or reset_by_email).
2337: # lonhost - HostID of server where request originated
2338:
2339: my ($udom,$uname,$upass,$npass,$context,$lonhost)=split(/:/,$tail);
2340:
2341: $upass=&unescape($upass);
2342: $npass=&unescape($npass);
2343: &Debug("Trying to change password for $uname");
2344:
2345: # First require that the user can be authenticated with their
2346: # old password unless context was 'reset_by_email':
2347:
2348: my ($validated,$failure);
2349: if ($context eq 'reset_by_email') {
2350: if ($lonhost eq '') {
2351: $failure = 'invalid_client';
2352: } else {
2353: $validated = 1;
2354: }
2355: } else {
2356: $validated = &validate_user($udom, $uname, $upass);
2357: }
2358: if($validated) {
2359: my $realpasswd = &get_auth_type($udom, $uname); # Defined since authd.
2360: my ($howpwd,$contentpwd)=split(/:/,$realpasswd);
2361: my $notunique;
2362: if ($howpwd eq 'internal') {
2363: &Debug("internal auth");
2364: my $ncpass = &hash_passwd($udom,$npass);
2365: my (undef,$method,@rest) = split(/!/,$contentpwd);
2366: if ($method eq 'bcrypt') {
2367: my %passwdconf = &Apache::lonnet::get_passwdconf($udom);
2368: if (($passwdconf{'numsaved'}) && ($passwdconf{'numsaved'} =~ /^\d+$/)) {
2369: my @oldpasswds;
2370: my $userpath = &propath($udom,$uname);
2371: my $fullpath = $userpath.'/oldpasswds';
2372: if (-d $userpath) {
2373: my @oldfiles;
2374: if (-e $fullpath) {
2375: if (opendir(my $dir,$fullpath)) {
2376: (@oldfiles) = grep(/^\d+$/,readdir($dir));
2377: closedir($dir);
2378: }
2379: if (@oldfiles) {
2380: @oldfiles = sort { $b <=> $a } (@oldfiles);
2381: my $numremoved = 0;
2382: for (my $i=0; $i<@oldfiles; $i++) {
2383: if ($i>=$passwdconf{'numsaved'}) {
2384: if (-f "$fullpath/$oldfiles[$i]") {
2385: if (unlink("$fullpath/$oldfiles[$i]")) {
2386: $numremoved ++;
2387: }
2388: }
2389: } elsif (open(my $fh,'<',"$fullpath/$oldfiles[$i]")) {
2390: while (my $line = <$fh>) {
2391: push(@oldpasswds,$line);
2392: }
2393: close($fh);
2394: }
2395: }
2396: if ($numremoved) {
2397: &logthis("unlinked $numremoved old password files for $uname:$udom");
2398: }
2399: }
2400: }
2401: push(@oldpasswds,$contentpwd);
2402: foreach my $item (@oldpasswds) {
2403: my (undef,$method,@rest) = split(/!/,$item);
2404: if ($method eq 'bcrypt') {
2405: my $result = &hash_passwd($udom,$npass,@rest);
2406: if ($result eq $item) {
2407: $notunique = 1;
2408: last;
2409: }
2410: }
2411: }
2412: unless ($notunique) {
2413: unless (-e $fullpath) {
2414: if (&mkpath("$fullpath/")) {
2415: chmod(0700,$fullpath);
2416: }
2417: }
2418: if (-d $fullpath) {
2419: my $now = time;
2420: if (open(my $fh,'>',"$fullpath/$now")) {
2421: print $fh $contentpwd;
2422: close($fh);
2423: chmod(0400,"$fullpath/$now");
2424: }
2425: }
2426: }
2427: }
2428: }
2429: }
2430: if ($notunique) {
2431: my $msg="Result of password change for $uname:$udom - password matches one used before";
2432: if ($lonhost) {
2433: $msg .= " - request originated from: $lonhost";
2434: }
2435: &logthis($msg);
2436: &Reply($client, "prioruse\n", $userinput);
2437: } elsif (&rewrite_password_file($udom, $uname, "internal:$ncpass")) {
2438: my $msg="Result of password change for $uname: pwchange_success";
2439: if ($lonhost) {
2440: $msg .= " - request originated from: $lonhost";
2441: }
2442: &logthis($msg);
2443: &update_passwd_history($uname,$udom,$howpwd,$context);
2444: &Reply($client, "ok\n", $userinput);
2445: } else {
2446: &logthis("Unable to open $uname passwd "
2447: ."to change password");
2448: &Failure( $client, "non_authorized\n",$userinput);
2449: }
2450: } elsif ($howpwd eq 'unix' && $context ne 'reset_by_email') {
2451: my $result = &change_unix_password($uname, $npass);
2452: if ($result eq 'ok') {
2453: &update_passwd_history($uname,$udom,$howpwd,$context);
2454: }
2455: &logthis("Result of password change for $uname: ".
2456: $result);
2457: &Reply($client, \$result, $userinput);
2458: } else {
2459: # this just means that the current password mode is not
2460: # one we know how to change (e.g the kerberos auth modes or
2461: # locally written auth handler).
2462: #
2463: &Failure( $client, "auth_mode_error\n", $userinput);
2464: }
2465: } else {
2466: if ($failure eq '') {
2467: $failure = 'non_authorized';
2468: }
2469: &Failure( $client, "$failure\n", $userinput);
2470: }
2471:
2472: return 1;
2473: }
2474: ®ister_handler("passwd", \&change_password_handler, 1, 1, 0);
2475:
2476: sub hash_passwd {
2477: my ($domain,$plainpass,@rest) = @_;
2478: my ($salt,$cost);
2479: if (@rest) {
2480: $cost = $rest[0];
2481: # salt is first 22 characters, base-64 encoded by bcrypt
2482: my $plainsalt = substr($rest[1],0,22);
2483: $salt = Crypt::Eksblowfish::Bcrypt::de_base64($plainsalt);
2484: } else {
2485: my %domdefaults = &Apache::lonnet::get_domain_defaults($domain);
2486: my $defaultcost = $domdefaults{'intauth_cost'};
2487: if (($defaultcost eq '') || ($defaultcost =~ /D/)) {
2488: $cost = 10;
2489: } else {
2490: $cost = $defaultcost;
2491: }
2492: # Generate random 16-octet base64 salt
2493: $salt = "";
2494: $salt .= pack("C", int rand(256)) for 1..16;
2495: }
2496: my $hash = &Crypt::Eksblowfish::Bcrypt::bcrypt_hash({
2497: key_nul => 1,
2498: cost => $cost,
2499: salt => $salt,
2500: }, Digest::SHA::sha512(Encode::encode('UTF-8',$plainpass)));
2501:
2502: my $result = join("!", "", "bcrypt", sprintf("%02d",$cost),
2503: &Crypt::Eksblowfish::Bcrypt::en_base64($salt).
2504: &Crypt::Eksblowfish::Bcrypt::en_base64($hash));
2505: return $result;
2506: }
2507:
2508: #
2509: # Create a new user. User in this case means a lon-capa user.
2510: # The user must either already exist in some authentication realm
2511: # like kerberos or the /etc/passwd. If not, a user completely local to
2512: # this loncapa system is created.
2513: #
2514: # Parameters:
2515: # $cmd - The command that got us here.
2516: # $tail - Tail of the command (remaining parameters).
2517: # $client - File descriptor connected to client.
2518: # Returns
2519: # 0 - Requested to exit, caller should shut down.
2520: # 1 - Continue processing.
2521: # Implicit inputs:
2522: # The authentication systems describe above have their own forms of implicit
2523: # input into the authentication process that are described above.
2524: sub add_user_handler {
2525:
2526: my ($cmd, $tail, $client) = @_;
2527:
2528:
2529: my ($udom,$uname,$umode,$npass)=split(/:/,$tail);
2530: my $userinput = $cmd.":".$tail; # Reconstruct the full request line.
2531:
2532: &Debug("cmd =".$cmd." $udom =".$udom." uname=".$uname);
2533:
2534:
2535: if($udom eq $currentdomainid) { # Reject new users for other domains...
2536:
2537: my $oldumask=umask(0077);
2538: chomp($npass);
2539: $npass=&unescape($npass);
2540: my $passfilename = &password_path($udom, $uname);
2541: &Debug("Password file created will be:".$passfilename);
2542: if (-e $passfilename) {
2543: &Failure( $client, "already_exists\n", $userinput);
2544: } else {
2545: my $fperror='';
2546: if (!&mkpath($passfilename)) {
2547: $fperror="error: ".($!+0)." mkdir failed while attempting "
2548: ."makeuser";
2549: }
2550: unless ($fperror) {
2551: my $result=&make_passwd_file($uname,$udom,$umode,$npass,
2552: $passfilename,'makeuser');
2553: &Reply($client,\$result, $userinput); #BUGBUG - could be fail
2554: } else {
2555: &Failure($client, \$fperror, $userinput);
2556: }
2557: }
2558: umask($oldumask);
2559: } else {
2560: &Failure($client, "not_right_domain\n",
2561: $userinput); # Even if we are multihomed.
2562:
2563: }
2564: return 1;
2565:
2566: }
2567: ®ister_handler("makeuser", \&add_user_handler, 1, 1, 0);
2568:
2569: #
2570: # Change the authentication method of a user. Note that this may
2571: # also implicitly change the user's password if, for example, the user is
2572: # joining an existing authentication realm. Known authentication realms at
2573: # this time are:
2574: # internal - Purely internal password file (only loncapa knows this user)
2575: # local - Institutionally written authentication module.
2576: # unix - Unix user (/etc/passwd with or without /etc/shadow).
2577: # kerb4 - kerberos version 4
2578: # kerb5 - kerberos version 5
2579: #
2580: # Parameters:
2581: # $cmd - The command that got us here.
2582: # $tail - Tail of the command (remaining parameters).
2583: # $client - File descriptor connected to client.
2584: # Returns
2585: # 0 - Requested to exit, caller should shut down.
2586: # 1 - Continue processing.
2587: # Implicit inputs:
2588: # The authentication systems describe above have their own forms of implicit
2589: # input into the authentication process that are described above.
2590: # NOTE:
2591: # This is also used to change the authentication credential values (e.g. passwd).
2592: #
2593: #
2594: sub change_authentication_handler {
2595:
2596: my ($cmd, $tail, $client) = @_;
2597:
2598: my $userinput = "$cmd:$tail"; # Reconstruct user input.
2599:
2600: my ($udom,$uname,$umode,$npass)=split(/:/,$tail);
2601: &Debug("cmd = ".$cmd." domain= ".$udom."uname =".$uname." umode= ".$umode);
2602: if ($udom ne $currentdomainid) {
2603: &Failure( $client, "not_right_domain\n", $client);
2604: } else {
2605:
2606: chomp($npass);
2607:
2608: $npass=&unescape($npass);
2609: my $oldauth = &get_auth_type($udom, $uname); # Get old auth info.
2610: my $passfilename = &password_path($udom, $uname);
2611: if ($passfilename) { # Not allowed to create a new user!!
2612: # If just changing the unix passwd. need to arrange to run
2613: # passwd since otherwise make_passwd_file will fail as
2614: # creation of unix authenticated users is no longer supported
2615: # except from the command line, when running make_domain_coordinator.pl
2616:
2617: if(($oldauth =~/^unix/) && ($umode eq "unix")) {
2618: my $result = &change_unix_password($uname, $npass);
2619: &logthis("Result of password change for $uname: ".$result);
2620: if ($result eq "ok") {
2621: &update_passwd_history($uname,$udom,$umode,'changeuserauth');
2622: &Reply($client, \$result);
2623: } else {
2624: &Failure($client, \$result);
2625: }
2626: } else {
2627: my $result=&make_passwd_file($uname,$udom,$umode,$npass,
2628: $passfilename,'changeuserauth');
2629: #
2630: # If the current auth mode is internal, and the old auth mode was
2631: # unix, or krb*, and the user is an author for this domain,
2632: # re-run manage_permissions for that role in order to be able
2633: # to take ownership of the construction space back to www:www
2634: #
2635:
2636:
2637: &Reply($client, \$result, $userinput);
2638: }
2639:
2640:
2641: } else {
2642: &Failure($client, "non_authorized\n", $userinput); # Fail the user now.
2643: }
2644: }
2645: return 1;
2646: }
2647: ®ister_handler("changeuserauth", \&change_authentication_handler, 1,1, 0);
2648:
2649: sub update_passwd_history {
2650: my ($uname,$udom,$umode,$context) = @_;
2651: my $proname=&propath($udom,$uname);
2652: my $now = time;
2653: if (open(my $fh,">>$proname/passwd.log")) {
2654: print $fh "$now:$umode:$context\n";
2655: close($fh);
2656: }
2657: return;
2658: }
2659:
2660: sub inst_unamemap_check {
2661: my ($cmd, $tail, $client) = @_;
2662: my $userinput = "$cmd:$tail";
2663: my %rulecheck;
2664: my $outcome;
2665: my ($udom,$uname,@rules) = split(/:/,$tail);
2666: $udom = &unescape($udom);
2667: $uname = &unescape($uname);
2668: @rules = map {&unescape($_);} (@rules);
2669: eval {
2670: local($SIG{__DIE__})='DEFAULT';
2671: $outcome = &localenroll::unamemap_check($udom,$uname,\@rules,\%rulecheck);
2672: };
2673: if (!$@) {
2674: if ($outcome eq 'ok') {
2675: my $result='';
2676: foreach my $key (keys(%rulecheck)) {
2677: $result.=&escape($key).'='.&Apache::lonnet::freeze_escape($rulecheck{$key}).'&';
2678: }
2679: &Reply($client,\$result,$userinput);
2680: } else {
2681: &Reply($client,"error\n", $userinput);
2682: }
2683: } else {
2684: &Failure($client,"unknown_cmd\n",$userinput);
2685: }
2686: }
2687: ®ister_handler("instunamemapcheck",\&inst_unamemap_check,0,1,0);
2688:
2689:
2690: #
2691: # Determines if this is the home server for a user. The home server
2692: # for a user will have his/her lon-capa passwd file. Therefore all we need
2693: # to do is determine if this file exists.
2694: #
2695: # Parameters:
2696: # $cmd - The command that got us here.
2697: # $tail - Tail of the command (remaining parameters).
2698: # $client - File descriptor connected to client.
2699: # Returns
2700: # 0 - Requested to exit, caller should shut down.
2701: # 1 - Continue processing.
2702: # Implicit inputs:
2703: # The authentication systems describe above have their own forms of implicit
2704: # input into the authentication process that are described above.
2705: #
2706: sub is_home_handler {
2707: my ($cmd, $tail, $client) = @_;
2708:
2709: my $userinput = "$cmd:$tail";
2710:
2711: my ($udom,$uname)=split(/:/,$tail);
2712: chomp($uname);
2713: my $passfile = &password_filename($udom, $uname);
2714: if($passfile) {
2715: &Reply( $client, "found\n", $userinput);
2716: } else {
2717: &Failure($client, "not_found\n", $userinput);
2718: }
2719: return 1;
2720: }
2721: ®ister_handler("home", \&is_home_handler, 0,1,0);
2722:
2723: #
2724: # Process an update request for a resource.
2725: # A resource has been modified that we hold a subscription to.
2726: # If the resource is not local, then we must update, or at least invalidate our
2727: # cached copy of the resource.
2728: # Parameters:
2729: # $cmd - The command that got us here.
2730: # $tail - Tail of the command (remaining parameters).
2731: # $client - File descriptor connected to client.
2732: # Returns
2733: # 0 - Requested to exit, caller should shut down.
2734: # 1 - Continue processing.
2735: # Implicit inputs:
2736: # The authentication systems describe above have their own forms of implicit
2737: # input into the authentication process that are described above.
2738: #
2739: sub update_resource_handler {
2740:
2741: my ($cmd, $tail, $client) = @_;
2742:
2743: my $userinput = "$cmd:$tail";
2744:
2745: my $fname= $tail; # This allows interactive testing
2746:
2747:
2748: my $ownership=ishome($fname);
2749: if ($ownership eq 'not_owner') {
2750: if (-e $fname) {
2751: # Delete preview file, if exists
2752: unlink("$fname.tmp");
2753: # Get usage stats
2754: my ($dev,$ino,$mode,$nlink,$uid,$gid,$rdev,$size,
2755: $atime,$mtime,$ctime,$blksize,$blocks)=stat($fname);
2756: my $now=time;
2757: my $since=$now-$atime;
2758: # If the file has not been used within lonExpire seconds,
2759: # unsubscribe from it and delete local copy
2760: if ($since>$perlvar{'lonExpire'}) {
2761: my $reply=&Apache::lonnet::reply("unsub:$fname","$clientname");
2762: &devalidate_meta_cache($fname);
2763: unlink("$fname");
2764: unlink("$fname.meta");
2765: } else {
2766: # Yes, this is in active use. Get a fresh copy. Since it might be in
2767: # very active use and huge (like a movie), copy it to "in.transfer" filename first.
2768: my $transname="$fname.in.transfer";
2769: my $remoteurl=&Apache::lonnet::reply("sub:$fname","$clientname");
2770: my $response;
2771: # FIXME: cannot replicate files that take more than two minutes to transfer -- needs checking now 1200s timeout used
2772: # for LWP request.
2773: my $request=new HTTP::Request('GET',"$remoteurl");
2774: $response=&LONCAPA::LWPReq::makerequest($clientname,$request,$transname,\%perlvar,1200,0,1);
2775: if ($response->is_error()) {
2776: my $reply=&Apache::lonnet::reply("unsub:$fname","$clientname");
2777: &devalidate_meta_cache($fname);
2778: if (-e $transname) {
2779: unlink($transname);
2780: }
2781: unlink($fname);
2782: my $message=$response->status_line;
2783: &logthis("LWP GET: $message for $fname ($remoteurl)");
2784: } else {
2785: if ($remoteurl!~/\.meta$/) {
2786: my $mrequest=new HTTP::Request('GET',$remoteurl.'.meta');
2787: my $mresponse = &LONCAPA::LWPReq::makerequest($clientname,$mrequest,$fname.'.meta',\%perlvar,120,0,1);
2788: if ($mresponse->is_error()) {
2789: unlink($fname.'.meta');
2790: }
2791: }
2792: # we successfully transfered, copy file over to real name
2793: rename($transname,$fname);
2794: &devalidate_meta_cache($fname);
2795: }
2796: }
2797: &Reply( $client, "ok\n", $userinput);
2798: } else {
2799: &Failure($client, "not_found\n", $userinput);
2800: }
2801: } else {
2802: &Failure($client, "rejected\n", $userinput);
2803: }
2804: return 1;
2805: }
2806: ®ister_handler("update", \&update_resource_handler, 0 ,1, 0);
2807:
2808: sub devalidate_meta_cache {
2809: my ($url) = @_;
2810: use Cache::Memcached;
2811: my $memcache = new Cache::Memcached({'servers'=>['127.0.0.1:11211']});
2812: $url = &Apache::lonnet::declutter($url);
2813: $url =~ s-\.meta$--;
2814: my $id = &escape('meta:'.$url);
2815: $memcache->delete($id);
2816: }
2817:
2818: #
2819: # Fetch a user file from a remote server to the user's home directory
2820: # userfiles subdir.
2821: # Parameters:
2822: # $cmd - The command that got us here.
2823: # $tail - Tail of the command (remaining parameters).
2824: # $client - File descriptor connected to client.
2825: # Returns
2826: # 0 - Requested to exit, caller should shut down.
2827: # 1 - Continue processing.
2828: #
2829: sub fetch_user_file_handler {
2830:
2831: my ($cmd, $tail, $client) = @_;
2832:
2833: my $userinput = "$cmd:$tail";
2834: my $fname = $tail;
2835: my ($udom,$uname,$ufile) = ($fname =~ m|^([^/]+)/([^/]+)/(.+)$|);
2836: my $udir=&propath($udom,$uname).'/userfiles';
2837: unless (-e $udir) {
2838: mkdir($udir,0770);
2839: }
2840: Debug("fetch user file for $fname");
2841: if (-e $udir) {
2842: $ufile=~s/^[\.\~]+//;
2843:
2844: # IF necessary, create the path right down to the file.
2845: # Note that any regular files in the way of this path are
2846: # wiped out to deal with some earlier folly of mine.
2847:
2848: if (!&mkpath($udir.'/'.$ufile)) {
2849: &Failure($client, "unable_to_create\n", $userinput);
2850: }
2851:
2852: my $destname=$udir.'/'.$ufile;
2853: my $transname=$udir.'/'.$ufile.'.in.transit';
2854: my $clientprotocol=$Apache::lonnet::protocol{$clientname};
2855: $clientprotocol = 'http' if ($clientprotocol ne 'https');
2856: my $clienthost = &Apache::lonnet::hostname($clientname);
2857: my $remoteurl=$clientprotocol.'://'.$clienthost.'/userfiles/'.$fname;
2858: my $response;
2859: Debug("Remote URL : $remoteurl Transfername $transname Destname: $destname");
2860: my $request=new HTTP::Request('GET',"$remoteurl");
2861: my $verifycert = 1;
2862: my @machine_ids = &Apache::lonnet::current_machine_ids();
2863: if (grep(/^\Q$clientname\E$/,@machine_ids)) {
2864: $verifycert = 0;
2865: }
2866: $response = &LONCAPA::LWPReq::makerequest($clientname,$request,$transname,\%perlvar,1200,$verifycert);
2867: if ($response->is_error()) {
2868: unlink($transname);
2869: my $message=$response->status_line;
2870: &logthis("LWP GET: $message for $fname ($remoteurl)");
2871: &Failure($client, "failed\n", $userinput);
2872: } else {
2873: Debug("Renaming $transname to $destname");
2874: if (!rename($transname,$destname)) {
2875: &logthis("Unable to move $transname to $destname");
2876: unlink($transname);
2877: &Failure($client, "failed\n", $userinput);
2878: } else {
2879: if ($fname =~ /^default.+\.(page|sequence)$/) {
2880: my ($major,$minor) = split(/\./,$clientversion);
2881: if (($major < 2) || ($major == 2 && $minor < 11)) {
2882: my $now = time;
2883: &Apache::lonnet::do_cache_new('crschange',$udom.'_'.$uname,$now,600);
2884: my $key = &escape('internal.contentchange');
2885: my $what = "$key=$now";
2886: my $hashref = &tie_user_hash($udom,$uname,'environment',
2887: &GDBM_WRCREAT(),"P",$what);
2888: if ($hashref) {
2889: $hashref->{$key}=$now;
2890: if (!&untie_user_hash($hashref)) {
2891: &logthis("error: ".($!+0)." untie (GDBM) failed ".
2892: "when updating internal.contentchange");
2893: }
2894: }
2895: }
2896: }
2897: &Reply($client, "ok\n", $userinput);
2898: }
2899: }
2900: } else {
2901: &Failure($client, "not_home\n", $userinput);
2902: }
2903: return 1;
2904: }
2905: ®ister_handler("fetchuserfile", \&fetch_user_file_handler, 0, 1, 0);
2906:
2907: #
2908: # Remove a file from a user's home directory userfiles subdirectory.
2909: # Parameters:
2910: # cmd - the Lond request keyword that got us here.
2911: # tail - the part of the command past the keyword.
2912: # client- File descriptor connected with the client.
2913: #
2914: # Returns:
2915: # 1 - Continue processing.
2916: sub remove_user_file_handler {
2917: my ($cmd, $tail, $client) = @_;
2918:
2919: my ($fname) = split(/:/, $tail); # Get rid of any tailing :'s lonc may have sent.
2920:
2921: my ($udom,$uname,$ufile) = ($fname =~ m|^([^/]+)/([^/]+)/(.+)$|);
2922: if ($ufile =~m|/\.\./|) {
2923: # any files paths with /../ in them refuse
2924: # to deal with
2925: &Failure($client, "refused\n", "$cmd:$tail");
2926: } else {
2927: my $udir = &propath($udom,$uname);
2928: if (-e $udir) {
2929: my $file=$udir.'/userfiles/'.$ufile;
2930: if (-e $file) {
2931: #
2932: # If the file is a regular file unlink is fine...
2933: # However it's possible the client wants a dir
2934: # removed, in which case rmdir is more appropriate.
2935: # Note: rmdir will only remove an empty directory.
2936: #
2937: if (-f $file){
2938: unlink($file);
2939: # for html files remove the associated .bak file
2940: # which may have been created by the editor.
2941: if ($ufile =~ m{^((docs|supplemental)/(?:\d+|default)/\d+(?:|/.+)/)[^/]+\.x?html?$}i) {
2942: my $path = $1;
2943: if (-e $file.'.bak') {
2944: unlink($file.'.bak');
2945: }
2946: }
2947: } elsif(-d $file) {
2948: rmdir($file);
2949: }
2950: if (-e $file) {
2951: # File is still there after we deleted it ?!?
2952:
2953: &Failure($client, "failed\n", "$cmd:$tail");
2954: } else {
2955: &Reply($client, "ok\n", "$cmd:$tail");
2956: }
2957: } else {
2958: &Failure($client, "not_found\n", "$cmd:$tail");
2959: }
2960: } else {
2961: &Failure($client, "not_home\n", "$cmd:$tail");
2962: }
2963: }
2964: return 1;
2965: }
2966: ®ister_handler("removeuserfile", \&remove_user_file_handler, 0,1,0);
2967:
2968: #
2969: # make a directory in a user's home directory userfiles subdirectory.
2970: # Parameters:
2971: # cmd - the Lond request keyword that got us here.
2972: # tail - the part of the command past the keyword.
2973: # client- File descriptor connected with the client.
2974: #
2975: # Returns:
2976: # 1 - Continue processing.
2977: sub mkdir_user_file_handler {
2978: my ($cmd, $tail, $client) = @_;
2979:
2980: my ($dir) = split(/:/, $tail); # Get rid of any tailing :'s lonc may have sent.
2981: $dir=&unescape($dir);
2982: my ($udom,$uname,$ufile) = ($dir =~ m|^([^/]+)/([^/]+)/(.+)$|);
2983: if ($ufile =~m|/\.\./|) {
2984: # any files paths with /../ in them refuse
2985: # to deal with
2986: &Failure($client, "refused\n", "$cmd:$tail");
2987: } else {
2988: my $udir = &propath($udom,$uname);
2989: if (-e $udir) {
2990: my $newdir=$udir.'/userfiles/'.$ufile.'/';
2991: if (!&mkpath($newdir)) {
2992: &Failure($client, "failed\n", "$cmd:$tail");
2993: }
2994: &Reply($client, "ok\n", "$cmd:$tail");
2995: } else {
2996: &Failure($client, "not_home\n", "$cmd:$tail");
2997: }
2998: }
2999: return 1;
3000: }
3001: ®ister_handler("mkdiruserfile", \&mkdir_user_file_handler, 0,1,0);
3002:
3003: #
3004: # rename a file in a user's home directory userfiles subdirectory.
3005: # Parameters:
3006: # cmd - the Lond request keyword that got us here.
3007: # tail - the part of the command past the keyword.
3008: # client- File descriptor connected with the client.
3009: #
3010: # Returns:
3011: # 1 - Continue processing.
3012: sub rename_user_file_handler {
3013: my ($cmd, $tail, $client) = @_;
3014:
3015: my ($udom,$uname,$old,$new) = split(/:/, $tail);
3016: $old=&unescape($old);
3017: $new=&unescape($new);
3018: if ($new =~m|/\.\./| || $old =~m|/\.\./|) {
3019: # any files paths with /../ in them refuse to deal with
3020: &Failure($client, "refused\n", "$cmd:$tail");
3021: } else {
3022: my $udir = &propath($udom,$uname);
3023: if (-e $udir) {
3024: my $oldfile=$udir.'/userfiles/'.$old;
3025: my $newfile=$udir.'/userfiles/'.$new;
3026: if (-e $newfile) {
3027: &Failure($client, "exists\n", "$cmd:$tail");
3028: } elsif (! -e $oldfile) {
3029: &Failure($client, "not_found\n", "$cmd:$tail");
3030: } else {
3031: if (!rename($oldfile,$newfile)) {
3032: &Failure($client, "failed\n", "$cmd:$tail");
3033: } else {
3034: &Reply($client, "ok\n", "$cmd:$tail");
3035: }
3036: }
3037: } else {
3038: &Failure($client, "not_home\n", "$cmd:$tail");
3039: }
3040: }
3041: return 1;
3042: }
3043: ®ister_handler("renameuserfile", \&rename_user_file_handler, 0,1,0);
3044:
3045: #
3046: # Checks if the specified user has an active session on the server
3047: # return ok if so, not_found if not
3048: #
3049: # Parameters:
3050: # cmd - The request keyword that dispatched to tus.
3051: # tail - The tail of the request (colon separated parameters).
3052: # client - Filehandle open on the client.
3053: # Return:
3054: # 1.
3055: sub user_has_session_handler {
3056: my ($cmd, $tail, $client) = @_;
3057:
3058: my ($udom, $uname) = map { &unescape($_) } (split(/:/, $tail));
3059:
3060: opendir(DIR,$perlvar{'lonIDsDir'});
3061: my $filename;
3062: while ($filename=readdir(DIR)) {
3063: last if ($filename=~/^\Q$uname\E_\d+_\Q$udom\E_/);
3064: }
3065: if ($filename) {
3066: &Reply($client, "ok\n", "$cmd:$tail");
3067: } else {
3068: &Failure($client, "not_found\n", "$cmd:$tail");
3069: }
3070: return 1;
3071:
3072: }
3073: ®ister_handler("userhassession", \&user_has_session_handler, 0,1,0);
3074:
3075: sub del_usersession_handler {
3076: my ($cmd, $tail, $client) = @_;
3077:
3078: my $result;
3079: my ($udom, $uname) = map { &unescape($_) } (split(/:/, $tail));
3080: if (($udom =~ /^$LONCAPA::match_domain$/) && ($uname =~ /^$LONCAPA::match_username$/)) {
3081: my $lonidsdir = $perlvar{'lonIDsDir'};
3082: if (-d $lonidsdir) {
3083: if (opendir(DIR,$lonidsdir)) {
3084: my $filename;
3085: while ($filename=readdir(DIR)) {
3086: if ($filename=~/^\Q$uname\E_\d+_\Q$udom\E_/) {
3087: if (tie(my %oldenv,'GDBM_File',"$lonidsdir/$filename",
3088: &GDBM_READER(),0640)) {
3089: my $linkedfile;
3090: if (exists($oldenv{'user.linkedenv'})) {
3091: $linkedfile = $oldenv{'user.linkedenv'};
3092: }
3093: untie(%oldenv);
3094: $result = unlink("$lonidsdir/$filename");
3095: if ($result) {
3096: if ($linkedfile =~ /^[a-f0-9]+_linked$/) {
3097: if (-l "$lonidsdir/$linkedfile.id") {
3098: unlink("$lonidsdir/$linkedfile.id");
3099: }
3100: }
3101: }
3102: } else {
3103: $result = unlink("$lonidsdir/$filename");
3104: }
3105: last;
3106: }
3107: }
3108: }
3109: }
3110: if ($result == 1) {
3111: &Reply($client, "$result\n", "$cmd:$tail");
3112: } else {
3113: &Reply($client, "not_found\n", "$cmd:$tail");
3114: }
3115: } else {
3116: &Failure($client, "invalid_user\n", "$cmd:$tail");
3117: }
3118: return 1;
3119: }
3120:
3121: ®ister_handler("delusersession", \&del_usersession_handler, 0,1,0);
3122:
3123: #
3124: # Authenticate access to a user file by checking that the token the user's
3125: # passed also exists in their session file
3126: #
3127: # Parameters:
3128: # cmd - The request keyword that dispatched to tus.
3129: # tail - The tail of the request (colon separated parameters).
3130: # client - Filehandle open on the client.
3131: # Return:
3132: # 1.
3133: sub token_auth_user_file_handler {
3134: my ($cmd, $tail, $client) = @_;
3135:
3136: my ($fname, $session) = split(/:/, $tail);
3137:
3138: chomp($session);
3139: my $reply="non_auth";
3140: my $file = $perlvar{'lonIDsDir'}.'/'.$session.'.id';
3141: if (open(ENVIN,"$file")) {
3142: flock(ENVIN,LOCK_SH);
3143: tie(my %disk_env,'GDBM_File',"$file",&GDBM_READER(),0640);
3144: if (exists($disk_env{"userfile.$fname"})) {
3145: $reply="ok";
3146: } else {
3147: foreach my $envname (keys(%disk_env)) {
3148: if ($envname=~ m|^userfile\.\Q$fname\E|) {
3149: $reply="ok";
3150: last;
3151: }
3152: }
3153: }
3154: untie(%disk_env);
3155: close(ENVIN);
3156: &Reply($client, \$reply, "$cmd:$tail");
3157: } else {
3158: &Failure($client, "invalid_token\n", "$cmd:$tail");
3159: }
3160: return 1;
3161:
3162: }
3163: ®ister_handler("tokenauthuserfile", \&token_auth_user_file_handler, 0,1,0);
3164:
3165: #
3166: # Unsubscribe from a resource.
3167: #
3168: # Parameters:
3169: # $cmd - The command that got us here.
3170: # $tail - Tail of the command (remaining parameters).
3171: # $client - File descriptor connected to client.
3172: # Returns
3173: # 0 - Requested to exit, caller should shut down.
3174: # 1 - Continue processing.
3175: #
3176: sub unsubscribe_handler {
3177: my ($cmd, $tail, $client) = @_;
3178:
3179: my $userinput= "$cmd:$tail";
3180:
3181: my ($fname) = split(/:/,$tail); # Split in case there's extrs.
3182:
3183: &Debug("Unsubscribing $fname");
3184: if (-e $fname) {
3185: &Debug("Exists");
3186: &Reply($client, &unsub($fname,$clientip), $userinput);
3187: } else {
3188: &Failure($client, "not_found\n", $userinput);
3189: }
3190: return 1;
3191: }
3192: ®ister_handler("unsub", \&unsubscribe_handler, 0, 1, 0);
3193:
3194: # Subscribe to a resource
3195: #
3196: # Parameters:
3197: # $cmd - The command that got us here.
3198: # $tail - Tail of the command (remaining parameters).
3199: # $client - File descriptor connected to client.
3200: # Returns
3201: # 0 - Requested to exit, caller should shut down.
3202: # 1 - Continue processing.
3203: #
3204: sub subscribe_handler {
3205: my ($cmd, $tail, $client)= @_;
3206:
3207: my $userinput = "$cmd:$tail";
3208:
3209: &Reply( $client, &subscribe($userinput,$clientip), $userinput);
3210:
3211: return 1;
3212: }
3213: ®ister_handler("sub", \&subscribe_handler, 0, 1, 0);
3214:
3215: #
3216: # Determine the latest version of a resource (it looks for the highest
3217: # past version and then returns that +1)
3218: #
3219: # Parameters:
3220: # $cmd - The command that got us here.
3221: # $tail - Tail of the command (remaining parameters).
3222: # (Should consist of an absolute path to a file)
3223: # $client - File descriptor connected to client.
3224: # Returns
3225: # 0 - Requested to exit, caller should shut down.
3226: # 1 - Continue processing.
3227: #
3228: sub current_version_handler {
3229: my ($cmd, $tail, $client) = @_;
3230:
3231: my $userinput= "$cmd:$tail";
3232:
3233: my $fname = $tail;
3234: &Reply( $client, ¤tversion($fname)."\n", $userinput);
3235: return 1;
3236:
3237: }
3238: ®ister_handler("currentversion", \¤t_version_handler, 0, 1, 0);
3239:
3240: # Make an entry in a user's activity log.
3241: #
3242: # Parameters:
3243: # $cmd - The command that got us here.
3244: # $tail - Tail of the command (remaining parameters).
3245: # $client - File descriptor connected to client.
3246: # Returns
3247: # 0 - Requested to exit, caller should shut down.
3248: # 1 - Continue processing.
3249: #
3250: sub activity_log_handler {
3251: my ($cmd, $tail, $client) = @_;
3252:
3253:
3254: my $userinput= "$cmd:$tail";
3255:
3256: my ($udom,$uname,$what)=split(/:/,$tail);
3257: chomp($what);
3258: my $proname=&propath($udom,$uname);
3259: my $now=time;
3260: my $hfh;
3261: if ($hfh=IO::File->new(">>$proname/activity.log")) {
3262: print $hfh "$now:$clientname:$what\n";
3263: &Reply( $client, "ok\n", $userinput);
3264: } else {
3265: &Failure($client, "error: ".($!+0)." IO::File->new Failed "
3266: ."while attempting log\n",
3267: $userinput);
3268: }
3269:
3270: return 1;
3271: }
3272: ®ister_handler("log", \&activity_log_handler, 0, 1, 0);
3273:
3274: #
3275: # Put a namespace entry in a user profile hash.
3276: # My druthers would be for this to be an encrypted interaction too.
3277: # anything that might be an inadvertent covert channel about either
3278: # user authentication or user personal information....
3279: #
3280: # Parameters:
3281: # $cmd - The command that got us here.
3282: # $tail - Tail of the command (remaining parameters).
3283: # $client - File descriptor connected to client.
3284: # Returns
3285: # 0 - Requested to exit, caller should shut down.
3286: # 1 - Continue processing.
3287: #
3288: sub put_user_profile_entry {
3289: my ($cmd, $tail, $client) = @_;
3290:
3291: my $userinput = "$cmd:$tail";
3292:
3293: my ($udom,$uname,$namespace,$what) =split(/:/,$tail,4);
3294: if ($namespace ne 'roles') {
3295: chomp($what);
3296: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3297: &GDBM_WRCREAT(),"P",$what);
3298: if($hashref) {
3299: my @pairs=split(/\&/,$what);
3300: foreach my $pair (@pairs) {
3301: my ($key,$value)=split(/=/,$pair);
3302: $hashref->{$key}=$value;
3303: }
3304: if (&untie_user_hash($hashref)) {
3305: &Reply( $client, "ok\n", $userinput);
3306: } else {
3307: &Failure($client, "error: ".($!+0)." untie(GDBM) failed ".
3308: "while attempting put\n",
3309: $userinput);
3310: }
3311: } else {
3312: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
3313: "while attempting put\n", $userinput);
3314: }
3315: } else {
3316: &Failure( $client, "refused\n", $userinput);
3317: }
3318:
3319: return 1;
3320: }
3321: ®ister_handler("put", \&put_user_profile_entry, 0, 1, 0);
3322:
3323: # Put a piece of new data in hash, returns error if entry already exists
3324: # Parameters:
3325: # $cmd - The command that got us here.
3326: # $tail - Tail of the command (remaining parameters).
3327: # $client - File descriptor connected to client.
3328: # Returns
3329: # 0 - Requested to exit, caller should shut down.
3330: # 1 - Continue processing.
3331: #
3332: sub newput_user_profile_entry {
3333: my ($cmd, $tail, $client) = @_;
3334:
3335: my $userinput = "$cmd:$tail";
3336:
3337: my ($udom,$uname,$namespace,$what) =split(/:/,$tail,4);
3338: if ($namespace eq 'roles') {
3339: &Failure( $client, "refused\n", $userinput);
3340: return 1;
3341: }
3342:
3343: chomp($what);
3344:
3345: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3346: &GDBM_WRCREAT(),"N",$what);
3347: if(!$hashref) {
3348: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
3349: "while attempting put\n", $userinput);
3350: return 1;
3351: }
3352:
3353: my @pairs=split(/\&/,$what);
3354: foreach my $pair (@pairs) {
3355: my ($key,$value)=split(/=/,$pair);
3356: if (exists($hashref->{$key})) {
3357: if (!&untie_user_hash($hashref)) {
3358: &logthis("error: ".($!+0)." untie (GDBM) failed ".
3359: "while attempting newput - early out as key exists");
3360: }
3361: &Failure($client, "key_exists: ".$key."\n",$userinput);
3362: return 1;
3363: }
3364: }
3365:
3366: foreach my $pair (@pairs) {
3367: my ($key,$value)=split(/=/,$pair);
3368: $hashref->{$key}=$value;
3369: }
3370:
3371: if (&untie_user_hash($hashref)) {
3372: &Reply( $client, "ok\n", $userinput);
3373: } else {
3374: &Failure($client, "error: ".($!+0)." untie(GDBM) failed ".
3375: "while attempting put\n",
3376: $userinput);
3377: }
3378: return 1;
3379: }
3380: ®ister_handler("newput", \&newput_user_profile_entry, 0, 1, 0);
3381:
3382: #
3383: # Increment a profile entry in the user history file.
3384: # The history contains keyword value pairs. In this case,
3385: # The value itself is a pair of numbers. The first, the current value
3386: # the second an increment that this function applies to the current
3387: # value.
3388: #
3389: # Parameters:
3390: # $cmd - The command that got us here.
3391: # $tail - Tail of the command (remaining parameters).
3392: # $client - File descriptor connected to client.
3393: # Returns
3394: # 0 - Requested to exit, caller should shut down.
3395: # 1 - Continue processing.
3396: #
3397: sub increment_user_value_handler {
3398: my ($cmd, $tail, $client) = @_;
3399:
3400: my $userinput = "$cmd:$tail";
3401:
3402: my ($udom,$uname,$namespace,$what) =split(/:/,$tail);
3403: if ($namespace ne 'roles') {
3404: chomp($what);
3405: my $hashref = &tie_user_hash($udom, $uname,
3406: $namespace, &GDBM_WRCREAT(),
3407: "P",$what);
3408: if ($hashref) {
3409: my @pairs=split(/\&/,$what);
3410: foreach my $pair (@pairs) {
3411: my ($key,$value)=split(/=/,$pair);
3412: $value = &unescape($value);
3413: # We could check that we have a number...
3414: if (! defined($value) || $value eq '') {
3415: $value = 1;
3416: }
3417: $hashref->{$key}+=$value;
3418: if ($namespace eq 'nohist_resourcetracker') {
3419: if ($hashref->{$key} < 0) {
3420: $hashref->{$key} = 0;
3421: }
3422: }
3423: }
3424: if (&untie_user_hash($hashref)) {
3425: &Reply( $client, "ok\n", $userinput);
3426: } else {
3427: &Failure($client, "error: ".($!+0)." untie(GDBM) failed ".
3428: "while attempting inc\n", $userinput);
3429: }
3430: } else {
3431: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
3432: "while attempting inc\n", $userinput);
3433: }
3434: } else {
3435: &Failure($client, "refused\n", $userinput);
3436: }
3437:
3438: return 1;
3439: }
3440: ®ister_handler("inc", \&increment_user_value_handler, 0, 1, 0);
3441:
3442: #
3443: # Put a new role for a user. Roles are LonCAPA's packaging of permissions.
3444: # Each 'role' a user has implies a set of permissions. Adding a new role
3445: # for a person grants the permissions packaged with that role
3446: # to that user when the role is selected.
3447: #
3448: # Parameters:
3449: # $cmd - The command string (rolesput).
3450: # $tail - The remainder of the request line. For rolesput this
3451: # consists of a colon separated list that contains:
3452: # The domain and user that is granting the role (logged).
3453: # The domain and user that is getting the role.
3454: # The roles being granted as a set of & separated pairs.
3455: # each pair a key value pair.
3456: # $client - File descriptor connected to the client.
3457: # Returns:
3458: # 0 - If the daemon should exit
3459: # 1 - To continue processing.
3460: #
3461: #
3462: sub roles_put_handler {
3463: my ($cmd, $tail, $client) = @_;
3464:
3465: my $userinput = "$cmd:$tail";
3466:
3467: my ( $exedom, $exeuser, $udom, $uname, $what) = split(/:/,$tail);
3468:
3469:
3470: my $namespace='roles';
3471: chomp($what);
3472: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3473: &GDBM_WRCREAT(), "P",
3474: "$exedom:$exeuser:$what");
3475: #
3476: # Log the attempt to set a role. The {}'s here ensure that the file
3477: # handle is open for the minimal amount of time. Since the flush
3478: # is done on close this improves the chances the log will be an un-
3479: # corrupted ordered thing.
3480: if ($hashref) {
3481: my $pass_entry = &get_auth_type($udom, $uname);
3482: my ($auth_type,$pwd) = split(/:/, $pass_entry);
3483: $auth_type = $auth_type.":";
3484: my @pairs=split(/\&/,$what);
3485: foreach my $pair (@pairs) {
3486: my ($key,$value)=split(/=/,$pair);
3487: &manage_permissions($key, $udom, $uname,
3488: $auth_type);
3489: $hashref->{$key}=$value;
3490: }
3491: if (&untie_user_hash($hashref)) {
3492: &Reply($client, "ok\n", $userinput);
3493: } else {
3494: &Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ".
3495: "while attempting rolesput\n", $userinput);
3496: }
3497: } else {
3498: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
3499: "while attempting rolesput\n", $userinput);
3500: }
3501: return 1;
3502: }
3503: ®ister_handler("rolesput", \&roles_put_handler, 1,1,0); # Encoded client only.
3504:
3505: #
3506: # Deletes (removes) a role for a user. This is equivalent to removing
3507: # a permissions package associated with the role from the user's profile.
3508: #
3509: # Parameters:
3510: # $cmd - The command (rolesdel)
3511: # $tail - The remainder of the request line. This consists
3512: # of:
3513: # The domain and user requesting the change (logged)
3514: # The domain and user being changed.
3515: # The roles being revoked. These are shipped to us
3516: # as a bunch of & separated role name keywords.
3517: # $client - The file handle open on the client.
3518: # Returns:
3519: # 1 - Continue processing
3520: # 0 - Exit.
3521: #
3522: sub roles_delete_handler {
3523: my ($cmd, $tail, $client) = @_;
3524:
3525: my $userinput = "$cmd:$tail";
3526:
3527: my ($exedom,$exeuser,$udom,$uname,$what)=split(/:/,$tail);
3528: &Debug("cmd = ".$cmd." exedom= ".$exedom."user = ".$exeuser." udom=".$udom.
3529: "what = ".$what);
3530: my $namespace='roles';
3531: chomp($what);
3532: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3533: &GDBM_WRCREAT(), "D",
3534: "$exedom:$exeuser:$what");
3535:
3536: if ($hashref) {
3537: my @rolekeys=split(/\&/,$what);
3538:
3539: foreach my $key (@rolekeys) {
3540: delete $hashref->{$key};
3541: }
3542: if (&untie_user_hash($hashref)) {
3543: &Reply($client, "ok\n", $userinput);
3544: } else {
3545: &Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ".
3546: "while attempting rolesdel\n", $userinput);
3547: }
3548: } else {
3549: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
3550: "while attempting rolesdel\n", $userinput);
3551: }
3552:
3553: return 1;
3554: }
3555: ®ister_handler("rolesdel", \&roles_delete_handler, 1,1, 0); # Encoded client only
3556:
3557: # Unencrypted get from a user's profile database. See
3558: # GetProfileEntryEncrypted for a version that does end-to-end encryption.
3559: # This function retrieves a keyed item from a specific named database in the
3560: # user's directory.
3561: #
3562: # Parameters:
3563: # $cmd - Command request keyword (get).
3564: # $tail - Tail of the command. This is a colon separated list
3565: # consisting of the domain and username that uniquely
3566: # identifies the profile,
3567: # The 'namespace' which selects the gdbm file to
3568: # do the lookup in,
3569: # & separated list of keys to lookup. Note that
3570: # the values are returned as an & separated list too.
3571: # $client - File descriptor open on the client.
3572: # Returns:
3573: # 1 - Continue processing.
3574: # 0 - Exit.
3575: #
3576: sub get_profile_entry {
3577: my ($cmd, $tail, $client) = @_;
3578:
3579: my $userinput= "$cmd:$tail";
3580:
3581: my ($udom,$uname,$namespace,$what) = split(/:/,$tail);
3582: chomp($what);
3583:
3584:
3585: my $replystring = read_profile($udom, $uname, $namespace, $what);
3586: my ($first) = split(/:/,$replystring);
3587: if($first ne "error") {
3588: &Reply($client, \$replystring, $userinput);
3589: } else {
3590: &Failure($client, $replystring." while attempting get\n", $userinput);
3591: }
3592: return 1;
3593:
3594:
3595: }
3596: ®ister_handler("get", \&get_profile_entry, 0,1,0);
3597:
3598: #
3599: # Process the encrypted get request. Note that the request is sent
3600: # in clear, but the reply is encrypted. This is a small covert channel:
3601: # information about the sensitive keys is given to the snooper. Just not
3602: # information about the values of the sensitive key. Hmm if I wanted to
3603: # know these I'd snoop for the egets. Get the profile item names from them
3604: # and then issue a get for them since there's no enforcement of the
3605: # requirement of an encrypted get for particular profile items. If I
3606: # were re-doing this, I'd force the request to be encrypted as well as the
3607: # reply. I'd also just enforce encrypted transactions for all gets since
3608: # that would prevent any covert channel snooping.
3609: #
3610: # Parameters:
3611: # $cmd - Command keyword of request (eget).
3612: # $tail - Tail of the command. See GetProfileEntry
3613: # for more information about this.
3614: # $client - File open on the client.
3615: # Returns:
3616: # 1 - Continue processing
3617: # 0 - server should exit.
3618: sub get_profile_entry_encrypted {
3619: my ($cmd, $tail, $client) = @_;
3620:
3621: my $userinput = "$cmd:$tail";
3622:
3623: my ($udom,$uname,$namespace,$what) = split(/:/,$tail);
3624: chomp($what);
3625: my $qresult = read_profile($udom, $uname, $namespace, $what);
3626: my ($first) = split(/:/, $qresult);
3627: if($first ne "error") {
3628:
3629: if ($cipher) {
3630: my $cmdlength=length($qresult);
3631: $qresult.=" ";
3632: my $encqresult='';
3633: for(my $encidx=0;$encidx<=$cmdlength;$encidx+=8) {
3634: $encqresult.= unpack("H16",
3635: $cipher->encrypt(substr($qresult,
3636: $encidx,
3637: 8)));
3638: }
3639: &Reply( $client, "enc:$cmdlength:$encqresult\n", $userinput);
3640: } else {
3641: &Failure( $client, "error:no_key\n", $userinput);
3642: }
3643: } else {
3644: &Failure($client, "$qresult while attempting eget\n", $userinput);
3645:
3646: }
3647:
3648: return 1;
3649: }
3650: ®ister_handler("eget", \&get_profile_entry_encrypted, 0, 1, 0);
3651:
3652: #
3653: # Deletes a key in a user profile database.
3654: #
3655: # Parameters:
3656: # $cmd - Command keyword (del).
3657: # $tail - Command tail. IN this case a colon
3658: # separated list containing:
3659: # The domain and user that identifies uniquely
3660: # the identity of the user.
3661: # The profile namespace (name of the profile
3662: # database file).
3663: # & separated list of keywords to delete.
3664: # $client - File open on client socket.
3665: # Returns:
3666: # 1 - Continue processing
3667: # 0 - Exit server.
3668: #
3669: #
3670: sub delete_profile_entry {
3671: my ($cmd, $tail, $client) = @_;
3672:
3673: my $userinput = "cmd:$tail";
3674:
3675: my ($udom,$uname,$namespace,$what) = split(/:/,$tail);
3676: chomp($what);
3677: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3678: &GDBM_WRCREAT(),
3679: "D",$what);
3680: if ($hashref) {
3681: my @keys=split(/\&/,$what);
3682: foreach my $key (@keys) {
3683: delete($hashref->{$key});
3684: }
3685: if (&untie_user_hash($hashref)) {
3686: &Reply($client, "ok\n", $userinput);
3687: } else {
3688: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
3689: "while attempting del\n", $userinput);
3690: }
3691: } else {
3692: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
3693: "while attempting del\n", $userinput);
3694: }
3695: return 1;
3696: }
3697: ®ister_handler("del", \&delete_profile_entry, 0, 1, 0);
3698:
3699: #
3700: # List the set of keys that are defined in a profile database file.
3701: # A successful reply from this will contain an & separated list of
3702: # the keys.
3703: # Parameters:
3704: # $cmd - Command request (keys).
3705: # $tail - Remainder of the request, a colon separated
3706: # list containing domain/user that identifies the
3707: # user being queried, and the database namespace
3708: # (database filename essentially).
3709: # $client - File open on the client.
3710: # Returns:
3711: # 1 - Continue processing.
3712: # 0 - Exit the server.
3713: #
3714: sub get_profile_keys {
3715: my ($cmd, $tail, $client) = @_;
3716:
3717: my $userinput = "$cmd:$tail";
3718:
3719: my ($udom,$uname,$namespace)=split(/:/,$tail);
3720: my $qresult='';
3721: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3722: &GDBM_READER());
3723: if ($hashref) {
3724: foreach my $key (keys %$hashref) {
3725: $qresult.="$key&";
3726: }
3727: if (&untie_user_hash($hashref)) {
3728: $qresult=~s/\&$//;
3729: &Reply($client, \$qresult, $userinput);
3730: } else {
3731: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
3732: "while attempting keys\n", $userinput);
3733: }
3734: } else {
3735: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
3736: "while attempting keys\n", $userinput);
3737: }
3738:
3739: return 1;
3740: }
3741: ®ister_handler("keys", \&get_profile_keys, 0, 1, 0);
3742:
3743: #
3744: # Dump the contents of a user profile database.
3745: # Note that this constitutes a very large covert channel too since
3746: # the dump will return sensitive information that is not encrypted.
3747: # The naive security assumption is that the session negotiation ensures
3748: # our client is trusted and I don't believe that's assured at present.
3749: # Sure want badly to go to ssl or tls. Of course if my peer isn't really
3750: # a LonCAPA node they could have negotiated an encryption key too so >sigh<.
3751: #
3752: # Parameters:
3753: # $cmd - The command request keyword (currentdump).
3754: # $tail - Remainder of the request, consisting of a colon
3755: # separated list that has the domain/username and
3756: # the namespace to dump (database file).
3757: # $client - file open on the remote client.
3758: # Returns:
3759: # 1 - Continue processing.
3760: # 0 - Exit the server.
3761: #
3762: sub dump_profile_database {
3763: my ($cmd, $tail, $client) = @_;
3764:
3765: my $res = LONCAPA::Lond::dump_profile_database($tail);
3766:
3767: if ($res =~ /^error:/) {
3768: Failure($client, \$res, "$cmd:$tail");
3769: } else {
3770: Reply($client, \$res, "$cmd:$tail");
3771: }
3772:
3773: return 1;
3774:
3775: #TODO remove
3776: my $userinput = "$cmd:$tail";
3777:
3778: my ($udom,$uname,$namespace) = split(/:/,$tail);
3779: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3780: &GDBM_READER());
3781: if ($hashref) {
3782: # Structure of %data:
3783: # $data{$symb}->{$parameter}=$value;
3784: # $data{$symb}->{'v.'.$parameter}=$version;
3785: # since $parameter will be unescaped, we do not
3786: # have to worry about silly parameter names...
3787:
3788: my $qresult='';
3789: my %data = (); # A hash of anonymous hashes..
3790: while (my ($key,$value) = each(%$hashref)) {
3791: my ($v,$symb,$param) = split(/:/,$key);
3792: next if ($v eq 'version' || $symb eq 'keys');
3793: next if (exists($data{$symb}) &&
3794: exists($data{$symb}->{$param}) &&
3795: $data{$symb}->{'v.'.$param} > $v);
3796: $data{$symb}->{$param}=$value;
3797: $data{$symb}->{'v.'.$param}=$v;
3798: }
3799: if (&untie_user_hash($hashref)) {
3800: while (my ($symb,$param_hash) = each(%data)) {
3801: while(my ($param,$value) = each (%$param_hash)){
3802: next if ($param =~ /^v\./); # Ignore versions...
3803: #
3804: # Just dump the symb=value pairs separated by &
3805: #
3806: $qresult.=$symb.':'.$param.'='.$value.'&';
3807: }
3808: }
3809: chop($qresult);
3810: &Reply($client , \$qresult, $userinput);
3811: } else {
3812: &Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ".
3813: "while attempting currentdump\n", $userinput);
3814: }
3815: } else {
3816: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
3817: "while attempting currentdump\n", $userinput);
3818: }
3819:
3820: return 1;
3821: }
3822: ®ister_handler("currentdump", \&dump_profile_database, 0, 1, 0);
3823:
3824: #
3825: # Dump a profile database with an optional regular expression
3826: # to match against the keys. In this dump, no effort is made
3827: # to separate symb from version information. Presumably the
3828: # databases that are dumped by this command are of a different
3829: # structure. Need to look at this and improve the documentation of
3830: # both this and the currentdump handler.
3831: # Parameters:
3832: # $cmd - The command keyword.
3833: # $tail - All of the characters after the $cmd:
3834: # These are expected to be a colon
3835: # separated list containing:
3836: # domain/user - identifying the user.
3837: # namespace - identifying the database.
3838: # regexp - optional regular expression
3839: # that is matched against
3840: # database keywords to do
3841: # selective dumps.
3842: # range - optional range of entries
3843: # e.g., 10-20 would return the
3844: # 10th to 19th items, etc.
3845: # $client - Channel open on the client.
3846: # Returns:
3847: # 1 - Continue processing.
3848: # Side effects:
3849: # response is written to $client.
3850: #
3851: sub dump_with_regexp {
3852: my ($cmd, $tail, $client) = @_;
3853:
3854: my $res = LONCAPA::Lond::dump_with_regexp($tail, $clientversion);
3855:
3856: if ($res =~ /^error:/) {
3857: Failure($client, \$res, "$cmd:$tail");
3858: } else {
3859: Reply($client, \$res, "$cmd:$tail");
3860: }
3861:
3862: return 1;
3863: }
3864: ®ister_handler("dump", \&dump_with_regexp, 0, 1, 0);
3865:
3866: #
3867: # Process the encrypted dump request. Original call should
3868: # be from lonnet::dump() with seventh arg ($encrypt) set to
3869: # 1, to ensure that both request and response are encrypted.
3870: #
3871: # Parameters:
3872: # $cmd - Command keyword of request (edump).
3873: # $tail - Tail of the command.
3874: # See &dump_with_regexp for more
3875: # information about this.
3876: # $client - File open on the client.
3877: # Returns:
3878: # 1 - Continue processing
3879: # 0 - server should exit.
3880: #
3881:
3882: sub encrypted_dump_with_regexp {
3883: my ($cmd, $tail, $client) = @_;
3884: my $res = LONCAPA::Lond::dump_with_regexp($tail, $clientversion);
3885:
3886: if ($res =~ /^error:/) {
3887: Failure($client, \$res, "$cmd:$tail");
3888: } else {
3889: if ($cipher) {
3890: my $cmdlength=length($res);
3891: $res.=" ";
3892: my $encres='';
3893: for (my $encidx=0;$encidx<=$cmdlength;$encidx+=8) {
3894: $encres.= unpack("H16",
3895: $cipher->encrypt(substr($res,
3896: $encidx,
3897: 8)));
3898: }
3899: &Reply( $client,"enc:$cmdlength:$encres\n","$cmd:$tail");
3900: } else {
3901: &Failure( $client, "error:no_key\n","$cmd:$tail");
3902: }
3903: }
3904: }
3905: ®ister_handler("edump", \&encrypted_dump_with_regexp, 0, 1, 0);
3906:
3907: # Store a set of key=value pairs associated with a versioned name.
3908: #
3909: # Parameters:
3910: # $cmd - Request command keyword.
3911: # $tail - Tail of the request. This is a colon
3912: # separated list containing:
3913: # domain/user - User and authentication domain.
3914: # namespace - Name of the database being modified
3915: # rid - Resource keyword to modify.
3916: # what - new value associated with rid.
3917: # laststore - (optional) version=timestamp
3918: # for most recent transaction for rid
3919: # in namespace, when cstore was called
3920: #
3921: # $client - Socket open on the client.
3922: #
3923: #
3924: # Returns:
3925: # 1 (keep on processing).
3926: # Side-Effects:
3927: # Writes to the client
3928: # Successful storage will cause either 'ok', or, if $laststore was included
3929: # in the tail of the request, and the version number for the last transaction
3930: # is larger than the version in $laststore, delay:$numtrans , where $numtrans
3931: # is the number of store evevnts recorded for rid in namespace since
3932: # lonnet::store() was called by the client.
3933: #
3934: sub store_handler {
3935: my ($cmd, $tail, $client) = @_;
3936:
3937: my $userinput = "$cmd:$tail";
3938: chomp($tail);
3939: my ($udom,$uname,$namespace,$rid,$what,$laststore) =split(/:/,$tail);
3940: if ($namespace ne 'roles') {
3941:
3942: my @pairs=split(/\&/,$what);
3943: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3944: &GDBM_WRCREAT(), "S",
3945: "$rid:$what");
3946: if ($hashref) {
3947: my $now = time;
3948: my $numtrans;
3949: if ($laststore) {
3950: my ($previousversion,$previoustime) = split(/\=/,$laststore);
3951: my ($lastversion,$lasttime) = (0,0);
3952: $lastversion = $hashref->{"version:$rid"};
3953: if ($lastversion) {
3954: $lasttime = $hashref->{"$lastversion:$rid:timestamp"};
3955: }
3956: if (($previousversion) && ($previousversion !~ /\D/)) {
3957: if (($lastversion > $previousversion) && ($lasttime >= $previoustime)) {
3958: $numtrans = $lastversion - $previousversion;
3959: }
3960: } elsif ($lastversion) {
3961: $numtrans = $lastversion;
3962: }
3963: if ($numtrans) {
3964: $numtrans =~ s/D//g;
3965: }
3966: }
3967: $hashref->{"version:$rid"}++;
3968: my $version=$hashref->{"version:$rid"};
3969: my $allkeys='';
3970: foreach my $pair (@pairs) {
3971: my ($key,$value)=split(/=/,$pair);
3972: $allkeys.=$key.':';
3973: $hashref->{"$version:$rid:$key"}=$value;
3974: }
3975: $hashref->{"$version:$rid:timestamp"}=$now;
3976: $allkeys.='timestamp';
3977: $hashref->{"$version:keys:$rid"}=$allkeys;
3978: if (&untie_user_hash($hashref)) {
3979: my $msg = 'ok';
3980: if ($numtrans) {
3981: $msg = 'delay:'.$numtrans;
3982: }
3983: &Reply($client, "$msg\n", $userinput);
3984: } else {
3985: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
3986: "while attempting store\n", $userinput);
3987: }
3988: } else {
3989: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
3990: "while attempting store\n", $userinput);
3991: }
3992: } else {
3993: &Failure($client, "refused\n", $userinput);
3994: }
3995:
3996: return 1;
3997: }
3998: ®ister_handler("store", \&store_handler, 0, 1, 0);
3999:
4000: # Modify a set of key=value pairs associated with a versioned name.
4001: #
4002: # Parameters:
4003: # $cmd - Request command keyword.
4004: # $tail - Tail of the request. This is a colon
4005: # separated list containing:
4006: # domain/user - User and authentication domain.
4007: # namespace - Name of the database being modified
4008: # rid - Resource keyword to modify.
4009: # v - Version item to modify
4010: # what - new value associated with rid.
4011: #
4012: # $client - Socket open on the client.
4013: #
4014: #
4015: # Returns:
4016: # 1 (keep on processing).
4017: # Side-Effects:
4018: # Writes to the client
4019: sub putstore_handler {
4020: my ($cmd, $tail, $client) = @_;
4021:
4022: my $userinput = "$cmd:$tail";
4023:
4024: my ($udom,$uname,$namespace,$rid,$v,$what) =split(/:/,$tail);
4025: if ($namespace ne 'roles') {
4026:
4027: chomp($what);
4028: my $hashref = &tie_user_hash($udom, $uname, $namespace,
4029: &GDBM_WRCREAT(), "M",
4030: "$rid:$v:$what");
4031: if ($hashref) {
4032: my $now = time;
4033: my %data = &hash_extract($what);
4034: my @allkeys;
4035: while (my($key,$value) = each(%data)) {
4036: push(@allkeys,$key);
4037: $hashref->{"$v:$rid:$key"} = $value;
4038: }
4039: my $allkeys = join(':',@allkeys);
4040: $hashref->{"$v:keys:$rid"}=$allkeys;
4041:
4042: if (&untie_user_hash($hashref)) {
4043: &Reply($client, "ok\n", $userinput);
4044: } else {
4045: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4046: "while attempting store\n", $userinput);
4047: }
4048: } else {
4049: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
4050: "while attempting store\n", $userinput);
4051: }
4052: } else {
4053: &Failure($client, "refused\n", $userinput);
4054: }
4055:
4056: return 1;
4057: }
4058: ®ister_handler("putstore", \&putstore_handler, 0, 1, 0);
4059:
4060: sub hash_extract {
4061: my ($str)=@_;
4062: my %hash;
4063: foreach my $pair (split(/\&/,$str)) {
4064: my ($key,$value)=split(/=/,$pair);
4065: $hash{$key}=$value;
4066: }
4067: return (%hash);
4068: }
4069: sub hash_to_str {
4070: my ($hash_ref)=@_;
4071: my $str;
4072: foreach my $key (keys(%$hash_ref)) {
4073: $str.=$key.'='.$hash_ref->{$key}.'&';
4074: }
4075: $str=~s/\&$//;
4076: return $str;
4077: }
4078:
4079: #
4080: # Dump out all versions of a resource that has key=value pairs associated
4081: # with it for each version. These resources are built up via the store
4082: # command.
4083: #
4084: # Parameters:
4085: # $cmd - Command keyword.
4086: # $tail - Remainder of the request which consists of:
4087: # domain/user - User and auth. domain.
4088: # namespace - name of resource database.
4089: # rid - Resource id.
4090: # $client - socket open on the client.
4091: #
4092: # Returns:
4093: # 1 indicating the caller should not yet exit.
4094: # Side-effects:
4095: # Writes a reply to the client.
4096: # The reply is a string of the following shape:
4097: # version=current&version:keys=k1:k2...&1:k1=v1&1:k2=v2...
4098: # Where the 1 above represents version 1.
4099: # this continues for all pairs of keys in all versions.
4100: #
4101: #
4102: #
4103: #
4104: sub restore_handler {
4105: my ($cmd, $tail, $client) = @_;
4106:
4107: my $userinput = "$cmd:$tail"; # Only used for logging purposes.
4108: my ($udom,$uname,$namespace,$rid) = split(/:/,$tail);
4109: $namespace=~s/\//\_/g;
4110: $namespace = &LONCAPA::clean_username($namespace);
4111:
4112: chomp($rid);
4113: my $qresult='';
4114: my $hashref = &tie_user_hash($udom, $uname, $namespace, &GDBM_READER());
4115: if ($hashref) {
4116: my $version=$hashref->{"version:$rid"};
4117: $qresult.="version=$version&";
4118: my $scope;
4119: for ($scope=1;$scope<=$version;$scope++) {
4120: my $vkeys=$hashref->{"$scope:keys:$rid"};
4121: my @keys=split(/:/,$vkeys);
4122: my $key;
4123: $qresult.="$scope:keys=$vkeys&";
4124: foreach $key (@keys) {
4125: $qresult.="$scope:$key=".$hashref->{"$scope:$rid:$key"}."&";
4126: }
4127: }
4128: if (&untie_user_hash($hashref)) {
4129: $qresult=~s/\&$//;
4130: &Reply( $client, \$qresult, $userinput);
4131: } else {
4132: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4133: "while attempting restore\n", $userinput);
4134: }
4135: } else {
4136: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
4137: "while attempting restore\n", $userinput);
4138: }
4139:
4140: return 1;
4141:
4142:
4143: }
4144: ®ister_handler("restore", \&restore_handler, 0,1,0);
4145:
4146: #
4147: # Add a chat message to a synchronous discussion board.
4148: #
4149: # Parameters:
4150: # $cmd - Request keyword.
4151: # $tail - Tail of the command. A colon separated list
4152: # containing:
4153: # cdom - Domain on which the chat board lives
4154: # cnum - Course containing the chat board.
4155: # newpost - Body of the posting.
4156: # group - Optional group, if chat board is only
4157: # accessible in a group within the course
4158: # $client - Socket open on the client.
4159: # Returns:
4160: # 1 - Indicating caller should keep on processing.
4161: #
4162: # Side-effects:
4163: # writes a reply to the client.
4164: #
4165: #
4166: sub send_chat_handler {
4167: my ($cmd, $tail, $client) = @_;
4168:
4169:
4170: my $userinput = "$cmd:$tail";
4171:
4172: my ($cdom,$cnum,$newpost,$group)=split(/\:/,$tail);
4173: &chat_add($cdom,$cnum,$newpost,$group);
4174: &Reply($client, "ok\n", $userinput);
4175:
4176: return 1;
4177: }
4178: ®ister_handler("chatsend", \&send_chat_handler, 0, 1, 0);
4179:
4180: #
4181: # Retrieve the set of chat messages from a discussion board.
4182: #
4183: # Parameters:
4184: # $cmd - Command keyword that initiated the request.
4185: # $tail - Remainder of the request after the command
4186: # keyword. In this case a colon separated list of
4187: # chat domain - Which discussion board.
4188: # chat id - Discussion thread(?)
4189: # domain/user - Authentication domain and username
4190: # of the requesting person.
4191: # group - Optional course group containing
4192: # the board.
4193: # $client - Socket open on the client program.
4194: # Returns:
4195: # 1 - continue processing
4196: # Side effects:
4197: # Response is written to the client.
4198: #
4199: sub retrieve_chat_handler {
4200: my ($cmd, $tail, $client) = @_;
4201:
4202:
4203: my $userinput = "$cmd:$tail";
4204:
4205: my ($cdom,$cnum,$udom,$uname,$group)=split(/\:/,$tail);
4206: my $reply='';
4207: foreach (&get_chat($cdom,$cnum,$udom,$uname,$group)) {
4208: $reply.=&escape($_).':';
4209: }
4210: $reply=~s/\:$//;
4211: &Reply($client, \$reply, $userinput);
4212:
4213:
4214: return 1;
4215: }
4216: ®ister_handler("chatretr", \&retrieve_chat_handler, 0, 1, 0);
4217:
4218: #
4219: # Initiate a query of an sql database. SQL query repsonses get put in
4220: # a file for later retrieval. This prevents sql query results from
4221: # bottlenecking the system. Note that with loncnew, perhaps this is
4222: # less of an issue since multiple outstanding requests can be concurrently
4223: # serviced.
4224: #
4225: # Parameters:
4226: # $cmd - Command keyword that initiated the request.
4227: # $tail - Remainder of the command after the keyword.
4228: # For this function, this consists of a query and
4229: # 3 arguments that are self-documentingly labelled
4230: # in the original arg1, arg2, arg3.
4231: # $client - Socket open on the client.
4232: # Return:
4233: # 1 - Indicating processing should continue.
4234: # Side-effects:
4235: # a reply is written to $client.
4236: #
4237: sub send_query_handler {
4238: my ($cmd, $tail, $client) = @_;
4239:
4240: my $userinput = "$cmd:$tail";
4241:
4242: my ($query,$arg1,$arg2,$arg3)=split(/\:/,$tail);
4243: $query=~s/\n*$//g;
4244: if (($query eq 'usersearch') || ($query eq 'instdirsearch')) {
4245: my $usersearchconf = &get_usersearch_config($currentdomainid,'directorysrch');
4246: my $earlyout;
4247: if (ref($usersearchconf) eq 'HASH') {
4248: if ($currentdomainid eq $clienthomedom) {
4249: if ($query eq 'usersearch') {
4250: if ($usersearchconf->{'lcavailable'} eq '0') {
4251: $earlyout = 1;
4252: }
4253: } else {
4254: if ($usersearchconf->{'available'} eq '0') {
4255: $earlyout = 1;
4256: }
4257: }
4258: } else {
4259: if ($query eq 'usersearch') {
4260: if ($usersearchconf->{'lclocalonly'}) {
4261: $earlyout = 1;
4262: }
4263: } else {
4264: if ($usersearchconf->{'localonly'}) {
4265: $earlyout = 1;
4266: }
4267: }
4268: }
4269: }
4270: if ($earlyout) {
4271: &Reply($client, "query_not_authorized\n");
4272: return 1;
4273: }
4274: }
4275: &Reply($client, "". &sql_reply("$clientname\&$query".
4276: "\&$arg1"."\&$arg2"."\&$arg3")."\n",
4277: $userinput);
4278:
4279: return 1;
4280: }
4281: ®ister_handler("querysend", \&send_query_handler, 0, 1, 0);
4282:
4283: #
4284: # Add a reply to an sql query. SQL queries are done asyncrhonously.
4285: # The query is submitted via a "querysend" transaction.
4286: # There it is passed on to the lonsql daemon, queued and issued to
4287: # mysql.
4288: # This transaction is invoked when the sql transaction is complete
4289: # it stores the query results in flie and indicates query completion.
4290: # presumably local software then fetches this response... I'm guessing
4291: # the sequence is: lonc does a querysend, we ask lonsql to do it.
4292: # lonsql on completion of the query interacts with the lond of our
4293: # client to do a query reply storing two files:
4294: # - id - The results of the query.
4295: # - id.end - Indicating the transaction completed.
4296: # NOTE: id is a unique id assigned to the query and querysend time.
4297: # Parameters:
4298: # $cmd - Command keyword that initiated this request.
4299: # $tail - Remainder of the tail. In this case that's a colon
4300: # separated list containing the query Id and the
4301: # results of the query.
4302: # $client - Socket open on the client.
4303: # Return:
4304: # 1 - Indicating that we should continue processing.
4305: # Side effects:
4306: # ok written to the client.
4307: #
4308: sub reply_query_handler {
4309: my ($cmd, $tail, $client) = @_;
4310:
4311:
4312: my $userinput = "$cmd:$tail";
4313:
4314: my ($id,$reply)=split(/:/,$tail);
4315: my $store;
4316: my $execdir=$perlvar{'lonDaemons'};
4317: if ($store=IO::File->new(">$execdir/tmp/$id")) {
4318: $reply=~s/\&/\n/g;
4319: print $store $reply;
4320: close $store;
4321: my $store2=IO::File->new(">$execdir/tmp/$id.end");
4322: print $store2 "done\n";
4323: close $store2;
4324: &Reply($client, "ok\n", $userinput);
4325: } else {
4326: &Failure($client, "error: ".($!+0)
4327: ." IO::File->new Failed ".
4328: "while attempting queryreply\n", $userinput);
4329: }
4330:
4331:
4332: return 1;
4333: }
4334: ®ister_handler("queryreply", \&reply_query_handler, 0, 1, 0);
4335:
4336: #
4337: # Process the courseidput request. Not quite sure what this means
4338: # at the system level sense. It appears a gdbm file in the
4339: # /home/httpd/lonUsers/$domain/nohist_courseids is tied and
4340: # a set of entries made in that database.
4341: #
4342: # Parameters:
4343: # $cmd - The command keyword that initiated this request.
4344: # $tail - Tail of the command. In this case consists of a colon
4345: # separated list contaning the domain to apply this to and
4346: # an ampersand separated list of keyword=value pairs.
4347: # Each value is a colon separated list that includes:
4348: # description, institutional code and course owner.
4349: # For backward compatibility with versions included
4350: # in LON-CAPA 1.1.X (and earlier) and 1.2.X, institutional
4351: # code and/or course owner are preserved from the existing
4352: # record when writing a new record in response to 1.1 or
4353: # 1.2 implementations of lonnet::flushcourselogs().
4354: #
4355: # $client - Socket open on the client.
4356: # Returns:
4357: # 1 - indicating that processing should continue
4358: #
4359: # Side effects:
4360: # reply is written to the client.
4361: #
4362: sub put_course_id_handler {
4363: my ($cmd, $tail, $client) = @_;
4364:
4365:
4366: my $userinput = "$cmd:$tail";
4367:
4368: my ($udom, $what) = split(/:/, $tail,2);
4369: chomp($what);
4370: my $now=time;
4371: my @pairs=split(/\&/,$what);
4372:
4373: my $hashref = &tie_domain_hash($udom, "nohist_courseids", &GDBM_WRCREAT());
4374: if ($hashref) {
4375: foreach my $pair (@pairs) {
4376: my ($key,$courseinfo) = split(/=/,$pair,2);
4377: $courseinfo =~ s/=/:/g;
4378: if (defined($hashref->{$key})) {
4379: my $value = &Apache::lonnet::thaw_unescape($hashref->{$key});
4380: if (ref($value) eq 'HASH') {
4381: my @items = ('description','inst_code','owner','type');
4382: my @new_items = split(/:/,$courseinfo,-1);
4383: my %storehash;
4384: for (my $i=0; $i<@new_items; $i++) {
4385: $storehash{$items[$i]} = &unescape($new_items[$i]);
4386: }
4387: $hashref->{$key} =
4388: &Apache::lonnet::freeze_escape(\%storehash);
4389: my $unesc_key = &unescape($key);
4390: $hashref->{&escape('lasttime:'.$unesc_key)} = $now;
4391: next;
4392: }
4393: }
4394: my @current_items = split(/:/,$hashref->{$key},-1);
4395: shift(@current_items); # remove description
4396: pop(@current_items); # remove last access
4397: my $numcurrent = scalar(@current_items);
4398: if ($numcurrent > 3) {
4399: $numcurrent = 3;
4400: }
4401: my @new_items = split(/:/,$courseinfo,-1);
4402: my $numnew = scalar(@new_items);
4403: if ($numcurrent > 0) {
4404: if ($numnew <= $numcurrent) { # flushcourselogs() from pre 2.2
4405: for (my $j=$numcurrent-$numnew; $j>=0; $j--) {
4406: $courseinfo .= ':'.$current_items[$numcurrent-$j-1];
4407: }
4408: }
4409: }
4410: $hashref->{$key}=$courseinfo.':'.$now;
4411: }
4412: if (&untie_domain_hash($hashref)) {
4413: &Reply( $client, "ok\n", $userinput);
4414: } else {
4415: &Failure($client, "error: ".($!+0)
4416: ." untie(GDBM) Failed ".
4417: "while attempting courseidput\n", $userinput);
4418: }
4419: } else {
4420: &Failure($client, "error: ".($!+0)
4421: ." tie(GDBM) Failed ".
4422: "while attempting courseidput\n", $userinput);
4423: }
4424:
4425: return 1;
4426: }
4427: ®ister_handler("courseidput", \&put_course_id_handler, 0, 1, 0);
4428:
4429: sub put_course_id_hash_handler {
4430: my ($cmd, $tail, $client) = @_;
4431: my $userinput = "$cmd:$tail";
4432: my ($udom,$mode,$what) = split(/:/, $tail,3);
4433: chomp($what);
4434: my $now=time;
4435: my @pairs=split(/\&/,$what);
4436: my $hashref = &tie_domain_hash($udom, "nohist_courseids", &GDBM_WRCREAT());
4437: if ($hashref) {
4438: foreach my $pair (@pairs) {
4439: my ($key,$value)=split(/=/,$pair);
4440: my $unesc_key = &unescape($key);
4441: if ($mode ne 'timeonly') {
4442: if (!defined($hashref->{&escape('lasttime:'.$unesc_key)})) {
4443: my $curritems = &Apache::lonnet::thaw_unescape($key);
4444: if (ref($curritems) ne 'HASH') {
4445: my @current_items = split(/:/,$hashref->{$key},-1);
4446: my $lasttime = pop(@current_items);
4447: $hashref->{&escape('lasttime:'.$unesc_key)} = $lasttime;
4448: } else {
4449: $hashref->{&escape('lasttime:'.$unesc_key)} = '';
4450: }
4451: }
4452: $hashref->{$key} = $value;
4453: }
4454: if ($mode ne 'notime') {
4455: $hashref->{&escape('lasttime:'.$unesc_key)} = $now;
4456: }
4457: }
4458: if (&untie_domain_hash($hashref)) {
4459: &Reply($client, "ok\n", $userinput);
4460: } else {
4461: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4462: "while attempting courseidputhash\n", $userinput);
4463: }
4464: } else {
4465: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
4466: "while attempting courseidputhash\n", $userinput);
4467: }
4468: return 1;
4469: }
4470: ®ister_handler("courseidputhash", \&put_course_id_hash_handler, 0, 1, 0);
4471:
4472: # Retrieves the value of a course id resource keyword pattern
4473: # defined since a starting date. Both the starting date and the
4474: # keyword pattern are optional. If the starting date is not supplied it
4475: # is treated as the beginning of time. If the pattern is not found,
4476: # it is treatred as "." matching everything.
4477: #
4478: # Parameters:
4479: # $cmd - Command keyword that resulted in us being dispatched.
4480: # $tail - The remainder of the command that, in this case, consists
4481: # of a colon separated list of:
4482: # domain - The domain in which the course database is
4483: # defined.
4484: # since - Optional parameter describing the minimum
4485: # time of definition(?) of the resources that
4486: # will match the dump.
4487: # description - regular expression that is used to filter
4488: # the dump. Only keywords matching this regexp
4489: # will be used.
4490: # institutional code - optional supplied code to filter
4491: # the dump. Only courses with an institutional code
4492: # that match the supplied code will be returned.
4493: # owner - optional supplied username and domain of owner to
4494: # filter the dump. Only courses for which the course
4495: # owner matches the supplied username and/or domain
4496: # will be returned. Pre-2.2.0 legacy entries from
4497: # nohist_courseiddump will only contain usernames.
4498: # type - optional parameter for selection
4499: # regexp_ok - if 1 or -1 allow the supplied institutional code
4500: # filter to behave as a regular expression:
4501: # 1 will not exclude the course if the instcode matches the RE
4502: # -1 will exclude the course if the instcode matches the RE
4503: # rtn_as_hash - whether to return the information available for
4504: # each matched item as a frozen hash of all
4505: # key, value pairs in the item's hash, or as a
4506: # colon-separated list of (in order) description,
4507: # institutional code, and course owner.
4508: # selfenrollonly - filter by courses allowing self-enrollment
4509: # now or in the future (selfenrollonly = 1).
4510: # catfilter - filter by course category, assigned to a course
4511: # using manually defined categories (i.e., not
4512: # self-cataloging based on on institutional code).
4513: # showhidden - include course in results even if course
4514: # was set to be excluded from course catalog (DC only).
4515: # caller - if set to 'coursecatalog', courses set to be hidden
4516: # from course catalog will be excluded from results (unless
4517: # overridden by "showhidden".
4518: # cloner - escaped username:domain of course cloner (if picking course to
4519: # clone).
4520: # cc_clone_list - escaped comma separated list of courses for which
4521: # course cloner has active CC role (and so can clone
4522: # automatically).
4523: # cloneonly - filter by courses for which cloner has rights to clone.
4524: # createdbefore - include courses for which creation date preceeded this date.
4525: # createdafter - include courses for which creation date followed this date.
4526: # creationcontext - include courses created in specified context
4527: #
4528: # domcloner - flag to indicate if user can create CCs in course's domain.
4529: # If so, ability to clone course is automatic.
4530: # hasuniquecode - filter by courses for which a six character unique code has
4531: # been set.
4532: #
4533: # $client - The socket open on the client.
4534: # Returns:
4535: # 1 - Continue processing.
4536: # Side Effects:
4537: # a reply is written to $client.
4538: sub dump_course_id_handler {
4539: my ($cmd, $tail, $client) = @_;
4540:
4541: my $res = LONCAPA::Lond::dump_course_id_handler($tail);
4542: if ($res =~ /^error:/) {
4543: Failure($client, \$res, "$cmd:$tail");
4544: } else {
4545: Reply($client, \$res, "$cmd:$tail");
4546: }
4547:
4548: return 1;
4549:
4550: #TODO remove
4551: my $userinput = "$cmd:$tail";
4552:
4553: my ($udom,$since,$description,$instcodefilter,$ownerfilter,$coursefilter,
4554: $typefilter,$regexp_ok,$rtn_as_hash,$selfenrollonly,$catfilter,$showhidden,
4555: $caller,$cloner,$cc_clone_list,$cloneonly,$createdbefore,$createdafter,
4556: $creationcontext,$domcloner,$hasuniquecode) =split(/:/,$tail);
4557: my $now = time;
4558: my ($cloneruname,$clonerudom,%cc_clone);
4559: if (defined($description)) {
4560: $description=&unescape($description);
4561: } else {
4562: $description='.';
4563: }
4564: if (defined($instcodefilter)) {
4565: $instcodefilter=&unescape($instcodefilter);
4566: } else {
4567: $instcodefilter='.';
4568: }
4569: my ($ownerunamefilter,$ownerdomfilter);
4570: if (defined($ownerfilter)) {
4571: $ownerfilter=&unescape($ownerfilter);
4572: if ($ownerfilter ne '.' && defined($ownerfilter)) {
4573: if ($ownerfilter =~ /^([^:]*):([^:]*)$/) {
4574: $ownerunamefilter = $1;
4575: $ownerdomfilter = $2;
4576: } else {
4577: $ownerunamefilter = $ownerfilter;
4578: $ownerdomfilter = '';
4579: }
4580: }
4581: } else {
4582: $ownerfilter='.';
4583: }
4584:
4585: if (defined($coursefilter)) {
4586: $coursefilter=&unescape($coursefilter);
4587: } else {
4588: $coursefilter='.';
4589: }
4590: if (defined($typefilter)) {
4591: $typefilter=&unescape($typefilter);
4592: } else {
4593: $typefilter='.';
4594: }
4595: if (defined($regexp_ok)) {
4596: $regexp_ok=&unescape($regexp_ok);
4597: }
4598: if (defined($catfilter)) {
4599: $catfilter=&unescape($catfilter);
4600: }
4601: if (defined($cloner)) {
4602: $cloner = &unescape($cloner);
4603: ($cloneruname,$clonerudom) = ($cloner =~ /^($LONCAPA::match_username):($LONCAPA::match_domain)$/);
4604: }
4605: if (defined($cc_clone_list)) {
4606: $cc_clone_list = &unescape($cc_clone_list);
4607: my @cc_cloners = split('&',$cc_clone_list);
4608: foreach my $cid (@cc_cloners) {
4609: my ($clonedom,$clonenum) = split(':',$cid);
4610: next if ($clonedom ne $udom);
4611: $cc_clone{$clonedom.'_'.$clonenum} = 1;
4612: }
4613: }
4614: if ($createdbefore ne '') {
4615: $createdbefore = &unescape($createdbefore);
4616: } else {
4617: $createdbefore = 0;
4618: }
4619: if ($createdafter ne '') {
4620: $createdafter = &unescape($createdafter);
4621: } else {
4622: $createdafter = 0;
4623: }
4624: if ($creationcontext ne '') {
4625: $creationcontext = &unescape($creationcontext);
4626: } else {
4627: $creationcontext = '.';
4628: }
4629: unless ($hasuniquecode) {
4630: $hasuniquecode = '.';
4631: }
4632: my $unpack = 1;
4633: if ($description eq '.' && $instcodefilter eq '.' && $ownerfilter eq '.' &&
4634: $typefilter eq '.') {
4635: $unpack = 0;
4636: }
4637: if (!defined($since)) { $since=0; }
4638: my $qresult='';
4639: my $hashref = &tie_domain_hash($udom, "nohist_courseids", &GDBM_WRCREAT());
4640: if ($hashref) {
4641: while (my ($key,$value) = each(%$hashref)) {
4642: my ($unesc_key,$lasttime_key,$lasttime,$is_hash,%val,
4643: %unesc_val,$selfenroll_end,$selfenroll_types,$created,
4644: $context);
4645: $unesc_key = &unescape($key);
4646: if ($unesc_key =~ /^lasttime:/) {
4647: next;
4648: } else {
4649: $lasttime_key = &escape('lasttime:'.$unesc_key);
4650: }
4651: if ($hashref->{$lasttime_key} ne '') {
4652: $lasttime = $hashref->{$lasttime_key};
4653: next if ($lasttime<$since);
4654: }
4655: my ($canclone,$valchange);
4656: my $items = &Apache::lonnet::thaw_unescape($value);
4657: if (ref($items) eq 'HASH') {
4658: if ($hashref->{$lasttime_key} eq '') {
4659: next if ($since > 1);
4660: }
4661: $is_hash = 1;
4662: if ($domcloner) {
4663: $canclone = 1;
4664: } elsif (defined($clonerudom)) {
4665: if ($items->{'cloners'}) {
4666: my @cloneable = split(',',$items->{'cloners'});
4667: if (@cloneable) {
4668: if (grep(/^\*$/,@cloneable)) {
4669: $canclone = 1;
4670: } elsif (grep(/^\*:\Q$clonerudom\E$/,@cloneable)) {
4671: $canclone = 1;
4672: } elsif (grep(/^\Q$cloneruname\E:\Q$clonerudom\E$/,@cloneable)) {
4673: $canclone = 1;
4674: }
4675: }
4676: unless ($canclone) {
4677: if ($cloneruname ne '' && $clonerudom ne '') {
4678: if ($cc_clone{$unesc_key}) {
4679: $canclone = 1;
4680: $items->{'cloners'} .= ','.$cloneruname.':'.
4681: $clonerudom;
4682: $valchange = 1;
4683: }
4684: }
4685: }
4686: } elsif (defined($cloneruname)) {
4687: if ($cc_clone{$unesc_key}) {
4688: $canclone = 1;
4689: $items->{'cloners'} = $cloneruname.':'.$clonerudom;
4690: $valchange = 1;
4691: }
4692: unless ($canclone) {
4693: if ($items->{'owner'} =~ /:/) {
4694: if ($items->{'owner'} eq $cloner) {
4695: $canclone = 1;
4696: }
4697: } elsif ($cloner eq $items->{'owner'}.':'.$udom) {
4698: $canclone = 1;
4699: }
4700: if ($canclone) {
4701: $items->{'cloners'} = $cloneruname.':'.$clonerudom;
4702: $valchange = 1;
4703: }
4704: }
4705: }
4706: }
4707: if ($unpack || !$rtn_as_hash) {
4708: $unesc_val{'descr'} = $items->{'description'};
4709: $unesc_val{'inst_code'} = $items->{'inst_code'};
4710: $unesc_val{'owner'} = $items->{'owner'};
4711: $unesc_val{'type'} = $items->{'type'};
4712: $unesc_val{'cloners'} = $items->{'cloners'};
4713: $unesc_val{'created'} = $items->{'created'};
4714: $unesc_val{'context'} = $items->{'context'};
4715: }
4716: $selfenroll_types = $items->{'selfenroll_types'};
4717: $selfenroll_end = $items->{'selfenroll_end_date'};
4718: $created = $items->{'created'};
4719: $context = $items->{'context'};
4720: if ($hasuniquecode ne '.') {
4721: next unless ($items->{'uniquecode'});
4722: }
4723: if ($selfenrollonly) {
4724: next if (!$selfenroll_types);
4725: if (($selfenroll_end > 0) && ($selfenroll_end <= $now)) {
4726: next;
4727: }
4728: }
4729: if ($creationcontext ne '.') {
4730: next if (($context ne '') && ($context ne $creationcontext));
4731: }
4732: if ($createdbefore > 0) {
4733: next if (($created eq '') || ($created > $createdbefore));
4734: }
4735: if ($createdafter > 0) {
4736: next if (($created eq '') || ($created <= $createdafter));
4737: }
4738: if ($catfilter ne '') {
4739: next if ($items->{'categories'} eq '');
4740: my @categories = split('&',$items->{'categories'});
4741: next if (@categories == 0);
4742: my @subcats = split('&',$catfilter);
4743: my $matchcat = 0;
4744: foreach my $cat (@categories) {
4745: if (grep(/^\Q$cat\E$/,@subcats)) {
4746: $matchcat = 1;
4747: last;
4748: }
4749: }
4750: next if (!$matchcat);
4751: }
4752: if ($caller eq 'coursecatalog') {
4753: if ($items->{'hidefromcat'} eq 'yes') {
4754: next if !$showhidden;
4755: }
4756: }
4757: } else {
4758: next if ($catfilter ne '');
4759: next if ($selfenrollonly);
4760: next if ($createdbefore || $createdafter);
4761: next if ($creationcontext ne '.');
4762: if ((defined($clonerudom)) && (defined($cloneruname))) {
4763: if ($cc_clone{$unesc_key}) {
4764: $canclone = 1;
4765: $val{'cloners'} = &escape($cloneruname.':'.$clonerudom);
4766: }
4767: }
4768: $is_hash = 0;
4769: my @courseitems = split(/:/,$value);
4770: $lasttime = pop(@courseitems);
4771: if ($hashref->{$lasttime_key} eq '') {
4772: next if ($lasttime<$since);
4773: }
4774: ($val{'descr'},$val{'inst_code'},$val{'owner'},$val{'type'}) = @courseitems;
4775: }
4776: if ($cloneonly) {
4777: next unless ($canclone);
4778: }
4779: my $match = 1;
4780: if ($description ne '.') {
4781: if (!$is_hash) {
4782: $unesc_val{'descr'} = &unescape($val{'descr'});
4783: }
4784: if (eval{$unesc_val{'descr'} !~ /\Q$description\E/i}) {
4785: $match = 0;
4786: }
4787: }
4788: if ($instcodefilter ne '.') {
4789: if (!$is_hash) {
4790: $unesc_val{'inst_code'} = &unescape($val{'inst_code'});
4791: }
4792: if ($regexp_ok == 1) {
4793: if (eval{$unesc_val{'inst_code'} !~ /$instcodefilter/}) {
4794: $match = 0;
4795: }
4796: } elsif ($regexp_ok == -1) {
4797: if (eval{$unesc_val{'inst_code'} =~ /$instcodefilter/}) {
4798: $match = 0;
4799: }
4800: } else {
4801: if (eval{$unesc_val{'inst_code'} !~ /\Q$instcodefilter\E/i}) {
4802: $match = 0;
4803: }
4804: }
4805: }
4806: if ($ownerfilter ne '.') {
4807: if (!$is_hash) {
4808: $unesc_val{'owner'} = &unescape($val{'owner'});
4809: }
4810: if (($ownerunamefilter ne '') && ($ownerdomfilter ne '')) {
4811: if ($unesc_val{'owner'} =~ /:/) {
4812: if (eval{$unesc_val{'owner'} !~
4813: /\Q$ownerunamefilter\E:\Q$ownerdomfilter\E$/i}) {
4814: $match = 0;
4815: }
4816: } else {
4817: if (eval{$unesc_val{'owner'} !~ /\Q$ownerunamefilter\E/i}) {
4818: $match = 0;
4819: }
4820: }
4821: } elsif ($ownerunamefilter ne '') {
4822: if ($unesc_val{'owner'} =~ /:/) {
4823: if (eval{$unesc_val{'owner'} !~ /\Q$ownerunamefilter\E:[^:]+$/i}) {
4824: $match = 0;
4825: }
4826: } else {
4827: if (eval{$unesc_val{'owner'} !~ /\Q$ownerunamefilter\E/i}) {
4828: $match = 0;
4829: }
4830: }
4831: } elsif ($ownerdomfilter ne '') {
4832: if ($unesc_val{'owner'} =~ /:/) {
4833: if (eval{$unesc_val{'owner'} !~ /^[^:]+:\Q$ownerdomfilter\E/}) {
4834: $match = 0;
4835: }
4836: } else {
4837: if ($ownerdomfilter ne $udom) {
4838: $match = 0;
4839: }
4840: }
4841: }
4842: }
4843: if ($coursefilter ne '.') {
4844: if (eval{$unesc_key !~ /^$udom(_)\Q$coursefilter\E$/}) {
4845: $match = 0;
4846: }
4847: }
4848: if ($typefilter ne '.') {
4849: if (!$is_hash) {
4850: $unesc_val{'type'} = &unescape($val{'type'});
4851: }
4852: if ($unesc_val{'type'} eq '') {
4853: if ($typefilter ne 'Course') {
4854: $match = 0;
4855: }
4856: } else {
4857: if (eval{$unesc_val{'type'} !~ /^\Q$typefilter\E$/}) {
4858: $match = 0;
4859: }
4860: }
4861: }
4862: if ($match == 1) {
4863: if ($rtn_as_hash) {
4864: if ($is_hash) {
4865: if ($valchange) {
4866: my $newvalue = &Apache::lonnet::freeze_escape($items);
4867: $qresult.=$key.'='.$newvalue.'&';
4868: } else {
4869: $qresult.=$key.'='.$value.'&';
4870: }
4871: } else {
4872: my %rtnhash = ( 'description' => &unescape($val{'descr'}),
4873: 'inst_code' => &unescape($val{'inst_code'}),
4874: 'owner' => &unescape($val{'owner'}),
4875: 'type' => &unescape($val{'type'}),
4876: 'cloners' => &unescape($val{'cloners'}),
4877: );
4878: my $items = &Apache::lonnet::freeze_escape(\%rtnhash);
4879: $qresult.=$key.'='.$items.'&';
4880: }
4881: } else {
4882: if ($is_hash) {
4883: $qresult .= $key.'='.&escape($unesc_val{'descr'}).':'.
4884: &escape($unesc_val{'inst_code'}).':'.
4885: &escape($unesc_val{'owner'}).'&';
4886: } else {
4887: $qresult .= $key.'='.$val{'descr'}.':'.$val{'inst_code'}.
4888: ':'.$val{'owner'}.'&';
4889: }
4890: }
4891: }
4892: }
4893: if (&untie_domain_hash($hashref)) {
4894: chop($qresult);
4895: &Reply($client, \$qresult, $userinput);
4896: } else {
4897: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4898: "while attempting courseiddump\n", $userinput);
4899: }
4900: } else {
4901: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
4902: "while attempting courseiddump\n", $userinput);
4903: }
4904: return 1;
4905: }
4906: ®ister_handler("courseiddump", \&dump_course_id_handler, 0, 1, 0);
4907:
4908: sub course_lastaccess_handler {
4909: my ($cmd, $tail, $client) = @_;
4910: my $userinput = "$cmd:$tail";
4911: my ($cdom,$cnum) = split(':',$tail);
4912: my (%lastaccess,$qresult);
4913: my $hashref = &tie_domain_hash($cdom, "nohist_courseids", &GDBM_WRCREAT());
4914: if ($hashref) {
4915: while (my ($key,$value) = each(%$hashref)) {
4916: my ($unesc_key,$lasttime);
4917: $unesc_key = &unescape($key);
4918: if ($cnum) {
4919: next unless ($unesc_key =~ /\Q$cdom\E_\Q$cnum\E$/);
4920: }
4921: if ($unesc_key =~ /^lasttime:($LONCAPA::match_domain\_$LONCAPA::match_courseid)/) {
4922: $lastaccess{$1} = $value;
4923: } else {
4924: my $items = &Apache::lonnet::thaw_unescape($value);
4925: if (ref($items) eq 'HASH') {
4926: unless ($lastaccess{$unesc_key}) {
4927: $lastaccess{$unesc_key} = '';
4928: }
4929: } else {
4930: my @courseitems = split(':',$value);
4931: $lastaccess{$unesc_key} = pop(@courseitems);
4932: }
4933: }
4934: }
4935: foreach my $cid (sort(keys(%lastaccess))) {
4936: $qresult.=&escape($cid).'='.$lastaccess{$cid}.'&';
4937: }
4938: if (&untie_domain_hash($hashref)) {
4939: if ($qresult) {
4940: chop($qresult);
4941: }
4942: &Reply($client, \$qresult, $userinput);
4943: } else {
4944: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4945: "while attempting lastacourseaccess\n", $userinput);
4946: }
4947: } else {
4948: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
4949: "while attempting lastcourseaccess\n", $userinput);
4950: }
4951: return 1;
4952: }
4953: ®ister_handler("courselastaccess",\&course_lastaccess_handler, 0, 1, 0);
4954:
4955: sub course_sessions_handler {
4956: my ($cmd, $tail, $client) = @_;
4957: my $userinput = "$cmd:$tail";
4958: my ($cdom,$cnum,$lastactivity) = split(':',$tail);
4959: my $dbsuffix = '_'.$cdom.'_'.$cnum.'.db';
4960: my (%sessions,$qresult);
4961: my $now=time;
4962: if (opendir(DIR,$perlvar{'lonIDsDir'})) {
4963: my $filename;
4964: while ($filename=readdir(DIR)) {
4965: next if ($filename=~/^\./);
4966: next if ($filename=~/^publicuser_/);
4967: next if ($filename=~/^[a-f0-9]+_(linked|lti_\d+)\.id$/);
4968: if ($filename =~ /^($LONCAPA::match_username)_\d+_($LONCAPA::match_domain)_/) {
4969: my ($uname,$udom) = ($1,$2);
4970: next unless (-e "$perlvar{'lonDaemons'}/tmp/$uname$dbsuffix");
4971: my $mtime = (stat("$perlvar{'lonIDsDir'}/$filename"))[9];
4972: if ($lastactivity < 0) {
4973: next if ($mtime-$now > $lastactivity);
4974: } else {
4975: next if ($now-$mtime > $lastactivity);
4976: }
4977: $sessions{$uname.':'.$udom} = $mtime;
4978: }
4979: }
4980: closedir(DIR);
4981: }
4982: foreach my $user (keys(%sessions)) {
4983: $qresult.=&escape($user).'='.$sessions{$user}.'&';
4984: }
4985: if ($qresult) {
4986: chop($qresult);
4987: }
4988: &Reply($client, \$qresult, $userinput);
4989: return 1;
4990: }
4991: ®ister_handler("coursesessions",\&course_sessions_handler, 0, 1, 0);
4992:
4993: #
4994: # Puts an unencrypted entry in a namespace db file at the domain level
4995: #
4996: # Parameters:
4997: # $cmd - The command that got us here.
4998: # $tail - Tail of the command (remaining parameters).
4999: # $client - File descriptor connected to client.
5000: # Returns
5001: # 0 - Requested to exit, caller should shut down.
5002: # 1 - Continue processing.
5003: # Side effects:
5004: # reply is written to $client.
5005: #
5006: sub put_domain_handler {
5007: my ($cmd,$tail,$client) = @_;
5008:
5009: my $userinput = "$cmd:$tail";
5010:
5011: my ($udom,$namespace,$what) =split(/:/,$tail,3);
5012: chomp($what);
5013: my @pairs=split(/\&/,$what);
5014: my $hashref = &tie_domain_hash($udom, "$namespace", &GDBM_WRCREAT(),
5015: "P", $what);
5016: if ($hashref) {
5017: foreach my $pair (@pairs) {
5018: my ($key,$value)=split(/=/,$pair);
5019: $hashref->{$key}=$value;
5020: }
5021: if (&untie_domain_hash($hashref)) {
5022: &Reply($client, "ok\n", $userinput);
5023: } else {
5024: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
5025: "while attempting putdom\n", $userinput);
5026: }
5027: } else {
5028: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
5029: "while attempting putdom\n", $userinput);
5030: }
5031:
5032: return 1;
5033: }
5034: ®ister_handler("putdom", \&put_domain_handler, 0, 1, 0);
5035:
5036: # Updates one or more entries in clickers.db file at the domain level
5037: #
5038: # Parameters:
5039: # $cmd - The command that got us here.
5040: # $tail - Tail of the command (remaining parameters).
5041: # In this case a colon separated list containing:
5042: # (a) the domain for which we are updating the entries,
5043: # (b) the action required -- add or del -- and
5044: # (c) a &-separated list of entries to add or delete.
5045: # $client - File descriptor connected to client.
5046: # Returns
5047: # 1 - Continue processing.
5048: # 0 - Requested to exit, caller should shut down.
5049: # Side effects:
5050: # reply is written to $client.
5051: #
5052:
5053:
5054: sub update_clickers {
5055: my ($cmd, $tail, $client) = @_;
5056:
5057: my $userinput = "$cmd:$tail";
5058: my ($udom,$action,$what) =split(/:/,$tail,3);
5059: chomp($what);
5060:
5061: my $hashref = &tie_domain_hash($udom, "clickers", &GDBM_WRCREAT(),
5062: "U","$action:$what");
5063:
5064: if (!$hashref) {
5065: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
5066: "while attempting updateclickers\n", $userinput);
5067: return 1;
5068: }
5069:
5070: my @pairs=split(/\&/,$what);
5071: foreach my $pair (@pairs) {
5072: my ($key,$value)=split(/=/,$pair);
5073: if ($action eq 'add') {
5074: if (exists($hashref->{$key})) {
5075: my @newvals = split(/,/,&unescape($value));
5076: my @currvals = split(/,/,&unescape($hashref->{$key}));
5077: my @merged = sort(keys(%{{map { $_ => 1 } (@newvals,@currvals)}}));
5078: $hashref->{$key}=&escape(join(',',@merged));
5079: } else {
5080: $hashref->{$key}=$value;
5081: }
5082: } elsif ($action eq 'del') {
5083: if (exists($hashref->{$key})) {
5084: my %current;
5085: map { $current{$_} = 1; } split(/,/,&unescape($hashref->{$key}));
5086: map { delete($current{$_}); } split(/,/,&unescape($value));
5087: if (keys(%current)) {
5088: $hashref->{$key}=&escape(join(',',sort(keys(%current))));
5089: } else {
5090: delete($hashref->{$key});
5091: }
5092: }
5093: }
5094: }
5095: if (&untie_user_hash($hashref)) {
5096: &Reply( $client, "ok\n", $userinput);
5097: } else {
5098: &Failure($client, "error: ".($!+0)." untie(GDBM) failed ".
5099: "while attempting put\n",
5100: $userinput);
5101: }
5102: return 1;
5103: }
5104: ®ister_handler("updateclickers", \&update_clickers, 0, 1, 0);
5105:
5106:
5107: # Deletes one or more entries in a namespace db file at the domain level
5108: #
5109: # Parameters:
5110: # $cmd - The command that got us here.
5111: # $tail - Tail of the command (remaining parameters).
5112: # In this case a colon separated list containing:
5113: # (a) the domain for which we are deleting the entries,
5114: # (b) &-separated list of keys to delete.
5115: # $client - File descriptor connected to client.
5116: # Returns
5117: # 1 - Continue processing.
5118: # 0 - Requested to exit, caller should shut down.
5119: # Side effects:
5120: # reply is written to $client.
5121: #
5122:
5123: sub del_domain_handler {
5124: my ($cmd,$tail,$client) = @_;
5125:
5126: my $userinput = "$cmd:$tail";
5127:
5128: my ($udom,$namespace,$what)=split(/:/,$tail,3);
5129: chomp($what);
5130: my $hashref = &tie_domain_hash($udom,$namespace,&GDBM_WRCREAT(),
5131: "D", $what);
5132: if ($hashref) {
5133: my @keys=split(/\&/,$what);
5134: foreach my $key (@keys) {
5135: delete($hashref->{$key});
5136: }
5137: if (&untie_user_hash($hashref)) {
5138: &Reply($client, "ok\n", $userinput);
5139: } else {
5140: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
5141: "while attempting deldom\n", $userinput);
5142: }
5143: } else {
5144: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
5145: "while attempting deldom\n", $userinput);
5146: }
5147: return 1;
5148: }
5149: ®ister_handler("deldom", \&del_domain_handler, 0, 1, 0);
5150:
5151:
5152: # Unencrypted get from the namespace database file at the domain level.
5153: # This function retrieves a keyed item from a specific named database in the
5154: # domain directory.
5155: #
5156: # Parameters:
5157: # $cmd - Command request keyword (getdom).
5158: # $tail - Tail of the command. This is a colon separated list
5159: # consisting of the domain and the 'namespace'
5160: # which selects the gdbm file to do the lookup in,
5161: # & separated list of keys to lookup. Note that
5162: # the values are returned as an & separated list too.
5163: # $client - File descriptor open on the client.
5164: # Returns:
5165: # 1 - Continue processing.
5166: # 0 - Exit.
5167: # Side effects:
5168: # reply is written to $client.
5169: #
5170:
5171: sub get_domain_handler {
5172: my ($cmd, $tail, $client) = @_;
5173:
5174: my $userinput = "$cmd:$tail";
5175:
5176: my ($udom,$namespace,$what)=split(/:/,$tail,3);
5177: if (($namespace =~ /^enc/) || ($namespace eq 'private')) {
5178: &Failure( $client, "refused\n", $userinput);
5179: } else {
5180: my $res = LONCAPA::Lond::get_dom($userinput);
5181: if ($res =~ /^error:/) {
5182: &Failure($client, \$res, $userinput);
5183: } else {
5184: &Reply($client, \$res, $userinput);
5185: }
5186: }
5187:
5188: return 1;
5189: }
5190: ®ister_handler("getdom", \&get_domain_handler, 0, 1, 0);
5191:
5192: #
5193: # Encrypted get from the namespace database file at the domain level.
5194: # This function retrieves a keyed item from a specific named database in the
5195: # domain directory.
5196: #
5197: # Parameters:
5198: # $cmd - Command request keyword (egetdom).
5199: # $tail - Tail of the command. This is a colon separated list
5200: # consisting of the domain and the 'namespace'
5201: # which selects the gdbm file to do the lookup in,
5202: # & separated list of keys to lookup. Note that
5203: # the values are returned as an & separated list too.
5204: # $client - File descriptor open on the client.
5205: # Returns:
5206: # 1 - Continue processing.
5207: # 0 - Exit.
5208: # Side effects:
5209: # reply is encrypted before being written to $client.
5210: #
5211: sub encrypted_get_domain_handler {
5212: my ($cmd, $tail, $client) = @_;
5213:
5214: my $userinput = "$cmd:$tail";
5215:
5216: my ($udom,$namespace,$what) = split(/:/,$tail,3);
5217: if ($namespace eq 'private') {
5218: &Failure( $client, "refused\n", $userinput);
5219: } else {
5220: my $res = LONCAPA::Lond::get_dom($userinput);
5221: if ($res =~ /^error:/) {
5222: &Failure($client, \$res, $userinput);
5223: } else {
5224: if ($cipher) {
5225: my $cmdlength=length($res);
5226: $res.=" ";
5227: my $encres='';
5228: for (my $encidx=0;$encidx<=$cmdlength;$encidx+=8) {
5229: $encres.= unpack("H16",
5230: $cipher->encrypt(substr($res,
5231: $encidx,
5232: 8)));
5233: }
5234: &Reply( $client,"enc:$cmdlength:$encres\n",$userinput);
5235: } else {
5236: &Failure( $client, "error:no_key\n",$userinput);
5237: }
5238: }
5239: }
5240: return 1;
5241: }
5242: ®ister_handler("egetdom", \&encrypted_get_domain_handler, 1, 1, 0);
5243:
5244: #
5245: # Encrypted get from the namespace database file at the domain level.
5246: # This function retrieves a keyed item from a specific named database in the
5247: # domain directory.
5248: #
5249: # Parameters:
5250: # $cmd - Command request keyword (lti).
5251: # $tail - Tail of the command. This is a colon-separated list
5252: # consisting of the domain, coursenum, if for LTI-
5253: # enabled deep-linking to course content using
5254: # link protection configured within a course,
5255: # context (=deeplink) if for LTI-enabled deep-linking
5256: # to course content using LTI Provider settings
5257: # configured within a course's domain, the (escaped)
5258: # launch URL, the (escaped) method (typically POST),
5259: # and a frozen hash of the LTI launch parameters
5260: # from the LTI payload.
5261: # $client - File descriptor open on the client.
5262: # Returns:
5263: # 1 - Continue processing.
5264: # 0 - Exit.
5265: # Side effects:
5266: # The reply will contain an LTI itemID, if the signed LTI payload
5267: # could be verified using the consumer key and the shared secret
5268: # available for that key (for the itemID) for either the course or domain,
5269: # depending on values for cnum and context. The reply is encrypted before
5270: # being written to $client.
5271: #
5272: sub lti_handler {
5273: my ($cmd, $tail, $client) = @_;
5274:
5275: my $userinput = "$cmd:$tail";
5276:
5277: my ($cdom,$cnum,$context,$escurl,$escmethod,$items) = split(/:/,$tail);
5278: my $url = &unescape($escurl);
5279: my $method = &unescape($escmethod);
5280: my $params = &Apache::lonnet::thaw_unescape($items);
5281: my $res;
5282: if ($cnum ne '') {
5283: $res = &LONCAPA::Lond::crslti_itemid($cdom,$cnum,$url,$method,$params,$perlvar{'lonVersion'});
5284: } else {
5285: $res = &LONCAPA::Lond::domlti_itemid($cdom,$context,$url,$method,$params,$perlvar{'lonVersion'});
5286: }
5287: if ($res =~ /^error:/) {
5288: &Failure($client, \$res, $userinput);
5289: } else {
5290: if ($cipher) {
5291: my $cmdlength=length($res);
5292: $res.=" ";
5293: my $encres='';
5294: for (my $encidx=0;$encidx<=$cmdlength;$encidx+=8) {
5295: $encres.= unpack("H16",
5296: $cipher->encrypt(substr($res,
5297: $encidx,
5298: 8)));
5299: }
5300: &Reply( $client,"enc:$cmdlength:$encres\n",$userinput);
5301: } else {
5302: &Failure( $client, "error:no_key\n",$userinput);
5303: }
5304: }
5305: return 1;
5306: }
5307: ®ister_handler("lti", \<i_handler, 1, 1, 0);
5308:
5309: #
5310: # Puts an id to a domains id database.
5311: #
5312: # Parameters:
5313: # $cmd - The command that triggered us.
5314: # $tail - Remainder of the request other than the command. This is a
5315: # colon separated list containing:
5316: # $domain - The domain for which we are writing the id.
5317: # $pairs - The id info to write... this is and & separated list
5318: # of keyword=value.
5319: # $client - Socket open on the client.
5320: # Returns:
5321: # 1 - Continue processing.
5322: # Side effects:
5323: # reply is written to $client.
5324: #
5325: sub put_id_handler {
5326: my ($cmd,$tail,$client) = @_;
5327:
5328:
5329: my $userinput = "$cmd:$tail";
5330:
5331: my ($udom,$what)=split(/:/,$tail);
5332: chomp($what);
5333: my @pairs=split(/\&/,$what);
5334: my $hashref = &tie_domain_hash($udom, "ids", &GDBM_WRCREAT(),
5335: "P", $what);
5336: if ($hashref) {
5337: foreach my $pair (@pairs) {
5338: my ($key,$value)=split(/=/,$pair);
5339: $hashref->{$key}=$value;
5340: }
5341: if (&untie_domain_hash($hashref)) {
5342: &Reply($client, "ok\n", $userinput);
5343: } else {
5344: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
5345: "while attempting idput\n", $userinput);
5346: }
5347: } else {
5348: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
5349: "while attempting idput\n", $userinput);
5350: }
5351:
5352: return 1;
5353: }
5354: ®ister_handler("idput", \&put_id_handler, 0, 1, 0);
5355:
5356: #
5357: # Retrieves a set of id values from the id database.
5358: # Returns an & separated list of results, one for each requested id to the
5359: # client.
5360: #
5361: # Parameters:
5362: # $cmd - Command keyword that caused us to be dispatched.
5363: # $tail - Tail of the command. Consists of a colon separated:
5364: # domain - the domain whose id table we dump
5365: # ids Consists of an & separated list of
5366: # id keywords whose values will be fetched.
5367: # nonexisting keywords will have an empty value.
5368: # $client - Socket open on the client.
5369: #
5370: # Returns:
5371: # 1 - indicating processing should continue.
5372: # Side effects:
5373: # An & separated list of results is written to $client.
5374: #
5375: sub get_id_handler {
5376: my ($cmd, $tail, $client) = @_;
5377:
5378:
5379: my $userinput = "$client:$tail";
5380:
5381: my ($udom,$what)=split(/:/,$tail);
5382: chomp($what);
5383: my @queries=split(/\&/,$what);
5384: my $qresult='';
5385: my $hashref = &tie_domain_hash($udom, "ids", &GDBM_READER());
5386: if ($hashref) {
5387: for (my $i=0;$i<=$#queries;$i++) {
5388: $qresult.="$hashref->{$queries[$i]}&";
5389: }
5390: if (&untie_domain_hash($hashref)) {
5391: $qresult=~s/\&$//;
5392: &Reply($client, \$qresult, $userinput);
5393: } else {
5394: &Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ".
5395: "while attempting idget\n",$userinput);
5396: }
5397: } else {
5398: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
5399: "while attempting idget\n",$userinput);
5400: }
5401:
5402: return 1;
5403: }
5404: ®ister_handler("idget", \&get_id_handler, 0, 1, 0);
5405:
5406: # Deletes one or more ids in a domain's id database.
5407: #
5408: # Parameters:
5409: # $cmd - Command keyword (iddel).
5410: # $tail - Command tail. In this case a colon
5411: # separated list containing:
5412: # The domain for which we are deleting the id(s).
5413: # &-separated list of id(s) to delete.
5414: # $client - File open on client socket.
5415: # Returns:
5416: # 1 - Continue processing
5417: # 0 - Exit server.
5418: #
5419: #
5420:
5421: sub del_id_handler {
5422: my ($cmd,$tail,$client) = @_;
5423:
5424: my $userinput = "$cmd:$tail";
5425:
5426: my ($udom,$what)=split(/:/,$tail);
5427: chomp($what);
5428: my $hashref = &tie_domain_hash($udom, "ids", &GDBM_WRCREAT(),
5429: "D", $what);
5430: if ($hashref) {
5431: my @keys=split(/\&/,$what);
5432: foreach my $key (@keys) {
5433: delete($hashref->{$key});
5434: }
5435: if (&untie_user_hash($hashref)) {
5436: &Reply($client, "ok\n", $userinput);
5437: } else {
5438: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
5439: "while attempting iddel\n", $userinput);
5440: }
5441: } else {
5442: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
5443: "while attempting iddel\n", $userinput);
5444: }
5445: return 1;
5446: }
5447: ®ister_handler("iddel", \&del_id_handler, 0, 1, 0);
5448:
5449: #
5450: # Puts broadcast e-mail sent by Domain Coordinator in nohist_dcmail database
5451: #
5452: # Parameters
5453: # $cmd - Command keyword that caused us to be dispatched.
5454: # $tail - Tail of the command. Consists of a colon separated:
5455: # domain - the domain whose dcmail we are recording
5456: # email Consists of key=value pair
5457: # where key is unique msgid
5458: # and value is message (in XML)
5459: # $client - Socket open on the client.
5460: #
5461: # Returns:
5462: # 1 - indicating processing should continue.
5463: # Side effects
5464: # reply is written to $client.
5465: #
5466: sub put_dcmail_handler {
5467: my ($cmd,$tail,$client) = @_;
5468: my $userinput = "$cmd:$tail";
5469:
5470:
5471: my ($udom,$what)=split(/:/,$tail);
5472: chomp($what);
5473: my $hashref = &tie_domain_hash($udom, "nohist_dcmail", &GDBM_WRCREAT());
5474: if ($hashref) {
5475: my ($key,$value)=split(/=/,$what);
5476: $hashref->{$key}=$value;
5477: }
5478: if (&untie_domain_hash($hashref)) {
5479: &Reply($client, "ok\n", $userinput);
5480: } else {
5481: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
5482: "while attempting dcmailput\n", $userinput);
5483: }
5484: return 1;
5485: }
5486: ®ister_handler("dcmailput", \&put_dcmail_handler, 0, 1, 0);
5487:
5488: #
5489: # Retrieves broadcast e-mail from nohist_dcmail database
5490: # Returns to client an & separated list of key=value pairs,
5491: # where key is msgid and value is message information.
5492: #
5493: # Parameters
5494: # $cmd - Command keyword that caused us to be dispatched.
5495: # $tail - Tail of the command. Consists of a colon separated:
5496: # domain - the domain whose dcmail table we dump
5497: # startfilter - beginning of time window
5498: # endfilter - end of time window
5499: # sendersfilter - & separated list of username:domain
5500: # for senders to search for.
5501: # $client - Socket open on the client.
5502: #
5503: # Returns:
5504: # 1 - indicating processing should continue.
5505: # Side effects
5506: # reply (& separated list of msgid=messageinfo pairs) is
5507: # written to $client.
5508: #
5509: sub dump_dcmail_handler {
5510: my ($cmd, $tail, $client) = @_;
5511:
5512: my $userinput = "$cmd:$tail";
5513: my ($udom,$startfilter,$endfilter,$sendersfilter) = split(/:/,$tail);
5514: chomp($sendersfilter);
5515: my @senders = ();
5516: if (defined($startfilter)) {
5517: $startfilter=&unescape($startfilter);
5518: } else {
5519: $startfilter='.';
5520: }
5521: if (defined($endfilter)) {
5522: $endfilter=&unescape($endfilter);
5523: } else {
5524: $endfilter='.';
5525: }
5526: if (defined($sendersfilter)) {
5527: $sendersfilter=&unescape($sendersfilter);
5528: @senders = map { &unescape($_) } split(/\&/,$sendersfilter);
5529: }
5530:
5531: my $qresult='';
5532: my $hashref = &tie_domain_hash($udom, "nohist_dcmail", &GDBM_WRCREAT());
5533: if ($hashref) {
5534: while (my ($key,$value) = each(%$hashref)) {
5535: my $match = 1;
5536: my ($timestamp,$subj,$uname,$udom) =
5537: split(/:/,&unescape(&unescape($key)),5); # yes, twice really
5538: $subj = &unescape($subj);
5539: unless ($startfilter eq '.' || !defined($startfilter)) {
5540: if ($timestamp < $startfilter) {
5541: $match = 0;
5542: }
5543: }
5544: unless ($endfilter eq '.' || !defined($endfilter)) {
5545: if ($timestamp > $endfilter) {
5546: $match = 0;
5547: }
5548: }
5549: unless (@senders < 1) {
5550: unless (grep/^$uname:$udom$/,@senders) {
5551: $match = 0;
5552: }
5553: }
5554: if ($match == 1) {
5555: $qresult.=$key.'='.$value.'&';
5556: }
5557: }
5558: if (&untie_domain_hash($hashref)) {
5559: chop($qresult);
5560: &Reply($client, \$qresult, $userinput);
5561: } else {
5562: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
5563: "while attempting dcmaildump\n", $userinput);
5564: }
5565: } else {
5566: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
5567: "while attempting dcmaildump\n", $userinput);
5568: }
5569: return 1;
5570: }
5571:
5572: ®ister_handler("dcmaildump", \&dump_dcmail_handler, 0, 1, 0);
5573:
5574: #
5575: # Puts domain roles in nohist_domainroles database
5576: #
5577: # Parameters
5578: # $cmd - Command keyword that caused us to be dispatched.
5579: # $tail - Tail of the command. Consists of a colon separated:
5580: # domain - the domain whose roles we are recording
5581: # role - Consists of key=value pair
5582: # where key is unique role
5583: # and value is start/end date information
5584: # $client - Socket open on the client.
5585: #
5586: # Returns:
5587: # 1 - indicating processing should continue.
5588: # Side effects
5589: # reply is written to $client.
5590: #
5591:
5592: sub put_domainroles_handler {
5593: my ($cmd,$tail,$client) = @_;
5594:
5595: my $userinput = "$cmd:$tail";
5596: my ($udom,$what)=split(/:/,$tail);
5597: chomp($what);
5598: my @pairs=split(/\&/,$what);
5599: my $hashref = &tie_domain_hash($udom, "nohist_domainroles", &GDBM_WRCREAT());
5600: if ($hashref) {
5601: foreach my $pair (@pairs) {
5602: my ($key,$value)=split(/=/,$pair);
5603: $hashref->{$key}=$value;
5604: }
5605: if (&untie_domain_hash($hashref)) {
5606: &Reply($client, "ok\n", $userinput);
5607: } else {
5608: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
5609: "while attempting domroleput\n", $userinput);
5610: }
5611: } else {
5612: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
5613: "while attempting domroleput\n", $userinput);
5614: }
5615:
5616: return 1;
5617: }
5618:
5619: ®ister_handler("domroleput", \&put_domainroles_handler, 0, 1, 0);
5620:
5621: #
5622: # Retrieves domain roles from nohist_domainroles database
5623: # Returns to client an & separated list of key=value pairs,
5624: # where key is role and value is start and end date information.
5625: #
5626: # Parameters
5627: # $cmd - Command keyword that caused us to be dispatched.
5628: # $tail - Tail of the command. Consists of a colon separated:
5629: # domain - the domain whose domain roles table we dump
5630: # $client - Socket open on the client.
5631: #
5632: # Returns:
5633: # 1 - indicating processing should continue.
5634: # Side effects
5635: # reply (& separated list of role=start/end info pairs) is
5636: # written to $client.
5637: #
5638: sub dump_domainroles_handler {
5639: my ($cmd, $tail, $client) = @_;
5640:
5641: my $userinput = "$cmd:$tail";
5642: my ($udom,$startfilter,$endfilter,$rolesfilter) = split(/:/,$tail);
5643: chomp($rolesfilter);
5644: my @roles = ();
5645: if (defined($startfilter)) {
5646: $startfilter=&unescape($startfilter);
5647: } else {
5648: $startfilter='.';
5649: }
5650: if (defined($endfilter)) {
5651: $endfilter=&unescape($endfilter);
5652: } else {
5653: $endfilter='.';
5654: }
5655: if (defined($rolesfilter)) {
5656: $rolesfilter=&unescape($rolesfilter);
5657: @roles = split(/\&/,$rolesfilter);
5658: }
5659:
5660: my $hashref = &tie_domain_hash($udom, "nohist_domainroles", &GDBM_WRCREAT());
5661: if ($hashref) {
5662: my $qresult = '';
5663: while (my ($key,$value) = each(%$hashref)) {
5664: my $match = 1;
5665: my ($end,$start) = split(/:/,&unescape($value));
5666: my ($trole,$uname,$udom,$runame,$rudom,$rsec) = split(/:/,&unescape($key));
5667: unless (@roles < 1) {
5668: unless (grep/^\Q$trole\E$/,@roles) {
5669: $match = 0;
5670: next;
5671: }
5672: }
5673: unless ($startfilter eq '.' || !defined($startfilter)) {
5674: if ((defined($start)) && ($start >= $startfilter)) {
5675: $match = 0;
5676: next;
5677: }
5678: }
5679: unless ($endfilter eq '.' || !defined($endfilter)) {
5680: if ((defined($end)) && (($end > 0) && ($end <= $endfilter))) {
5681: $match = 0;
5682: next;
5683: }
5684: }
5685: if ($match == 1) {
5686: $qresult.=$key.'='.$value.'&';
5687: }
5688: }
5689: if (&untie_domain_hash($hashref)) {
5690: chop($qresult);
5691: &Reply($client, \$qresult, $userinput);
5692: } else {
5693: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
5694: "while attempting domrolesdump\n", $userinput);
5695: }
5696: } else {
5697: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
5698: "while attempting domrolesdump\n", $userinput);
5699: }
5700: return 1;
5701: }
5702:
5703: ®ister_handler("domrolesdump", \&dump_domainroles_handler, 0, 1, 0);
5704:
5705:
5706: # Process the tmpput command I'm not sure what this does.. Seems to
5707: # create a file in the lonDaemons/tmp directory of the form $id.tmp
5708: # where Id is the client's ip concatenated with a sequence number.
5709: # The file will contain some value that is passed in. Is this e.g.
5710: # a login token?
5711: #
5712: # Parameters:
5713: # $cmd - The command that got us dispatched.
5714: # $tail - The remainder of the request following $cmd:
5715: # In this case this will be the contents of the file.
5716: # $client - Socket connected to the client.
5717: # Returns:
5718: # 1 indicating processing can continue.
5719: # Side effects:
5720: # A file is created in the local filesystem.
5721: # A reply is sent to the client.
5722: sub tmp_put_handler {
5723: my ($cmd, $what, $client) = @_;
5724:
5725: my $userinput = "$cmd:$what"; # Reconstruct for logging.
5726:
5727: my ($record,$context) = split(/:/,$what);
5728: if ($context ne '') {
5729: chomp($context);
5730: $context = &unescape($context);
5731: }
5732: my ($id,$store);
5733: $tmpsnum++;
5734: my $numtries = 0;
5735: my $execdir=$perlvar{'lonDaemons'};
5736: if (($context eq 'resetpw') || ($context eq 'createaccount') ||
5737: ($context eq 'sso') || ($context eq 'link') || ($context eq 'retry')) {
5738: $id = &md5_hex(&md5_hex(time.{}.rand().$$.$tmpsnum));
5739: while ((-e "$execdir/tmp/$id.tmp") && ($numtries <10)) {
5740: undef($id);
5741: $id = &md5_hex(&md5_hex(time.{}.rand().$$.$tmpsnum));
5742: $numtries ++;
5743: }
5744: } else {
5745: $id = $$.'_'.$clientip.'_'.$tmpsnum;
5746: }
5747: $id=~s/\W/\_/g;
5748: $record=~s/\n//g;
5749: if (($id ne '') &&
5750: ($store=IO::File->new(">$execdir/tmp/$id.tmp"))) {
5751: print $store $record;
5752: close $store;
5753: &Reply($client, \$id, $userinput);
5754: } else {
5755: &Failure( $client, "error: ".($!+0)."IO::File->new Failed ".
5756: "while attempting tmpput\n", $userinput);
5757: }
5758: return 1;
5759:
5760: }
5761: ®ister_handler("tmpput", \&tmp_put_handler, 0, 1, 0);
5762:
5763: # Processes the tmpget command. This command returns the contents
5764: # of a temporary resource file(?) created via tmpput.
5765: #
5766: # Paramters:
5767: # $cmd - Command that got us dispatched.
5768: # $id - Tail of the command, contain the id of the resource
5769: # we want to fetch.
5770: # $client - socket open on the client.
5771: # Return:
5772: # 1 - Inidcating processing can continue.
5773: # Side effects:
5774: # A reply is sent to the client.
5775: #
5776: sub tmp_get_handler {
5777: my ($cmd, $id, $client) = @_;
5778:
5779: my $userinput = "$cmd:$id";
5780:
5781:
5782: $id=~s/\W/\_/g;
5783: my $store;
5784: my $execdir=$perlvar{'lonDaemons'};
5785: if ($store=IO::File->new("$execdir/tmp/$id.tmp")) {
5786: my $reply=<$store>;
5787: &Reply( $client, \$reply, $userinput);
5788: close $store;
5789: } else {
5790: &Failure( $client, "error: ".($!+0)."IO::File->new Failed ".
5791: "while attempting tmpget\n", $userinput);
5792: }
5793:
5794: return 1;
5795: }
5796: ®ister_handler("tmpget", \&tmp_get_handler, 0, 1, 0);
5797:
5798: #
5799: # Process the tmpdel command. This command deletes a temp resource
5800: # created by the tmpput command.
5801: #
5802: # Parameters:
5803: # $cmd - Command that got us here.
5804: # $id - Id of the temporary resource created.
5805: # $client - socket open on the client process.
5806: #
5807: # Returns:
5808: # 1 - Indicating processing should continue.
5809: # Side Effects:
5810: # A file is deleted
5811: # A reply is sent to the client.
5812: sub tmp_del_handler {
5813: my ($cmd, $id, $client) = @_;
5814:
5815: my $userinput= "$cmd:$id";
5816:
5817: chomp($id);
5818: $id=~s/\W/\_/g;
5819: my $execdir=$perlvar{'lonDaemons'};
5820: if (unlink("$execdir/tmp/$id.tmp")) {
5821: &Reply($client, "ok\n", $userinput);
5822: } else {
5823: &Failure( $client, "error: ".($!+0)."Unlink tmp Failed ".
5824: "while attempting tmpdel\n", $userinput);
5825: }
5826:
5827: return 1;
5828:
5829: }
5830: ®ister_handler("tmpdel", \&tmp_del_handler, 0, 1, 0);
5831:
5832: #
5833: # Process the updatebalcookie command. This command updates a
5834: # cookie in the lonBalancedir directory on a load balancer node.
5835: #
5836: # Parameters:
5837: # $cmd - Command that got us here.
5838: # $tail - Tail of the request (escaped cookie: escaped current entry)
5839: #
5840: # $client - socket open on the client process.
5841: #
5842: # Returns:
5843: # 1 - Indicating processing should continue.
5844: # Side Effects:
5845: # A cookie file is updated from the lonBalancedir directory
5846: # A reply is sent to the client.
5847: #
5848: sub update_balcookie_handler {
5849: my ($cmd, $tail, $client) = @_;
5850:
5851: my $userinput= "$cmd:$tail";
5852: chomp($tail);
5853: my ($cookie,$lastentry) = map { &unescape($_) } (split(/:/,$tail));
5854:
5855: my $updatedone;
5856: if ($cookie =~ /^$LONCAPA::match_domain\_$LONCAPA::match_username\_[a-f0-9]{32}$/) {
5857: my $execdir=$perlvar{'lonBalanceDir'};
5858: if (-e "$execdir/$cookie.id") {
5859: my $doupdate;
5860: if (open(my $fh,'<',"$execdir/$cookie.id")) {
5861: while (my $line = <$fh>) {
5862: chomp($line);
5863: if ($line eq $lastentry) {
5864: $doupdate = 1;
5865: last;
5866: }
5867: }
5868: close($fh);
5869: }
5870: if ($doupdate) {
5871: if (open(my $fh,'>',"$execdir/$cookie.id")) {
5872: print $fh $clientname;
5873: close($fh);
5874: $updatedone = 1;
5875: }
5876: }
5877: }
5878: }
5879: if ($updatedone) {
5880: &Reply($client, "ok\n", $userinput);
5881: } else {
5882: &Failure( $client, "error: ".($!+0)."file update failed ".
5883: "while attempting updatebalcookie\n", $userinput);
5884: }
5885: return 1;
5886: }
5887: ®ister_handler("updatebalcookie", \&update_balcookie_handler, 0, 1, 0);
5888:
5889: #
5890: # Process the delbalcookie command. This command deletes a balancer
5891: # cookie in the lonBalancedir directory on a load balancer node.
5892: #
5893: # Parameters:
5894: # $cmd - Command that got us here.
5895: # $cookie - Cookie to be deleted.
5896: # $client - socket open on the client process.
5897: #
5898: # Returns:
5899: # 1 - Indicating processing should continue.
5900: # Side Effects:
5901: # A cookie file is deleted from the lonBalancedir directory
5902: # A reply is sent to the client.
5903: sub del_balcookie_handler {
5904: my ($cmd, $cookie, $client) = @_;
5905:
5906: my $userinput= "$cmd:$cookie";
5907:
5908: chomp($cookie);
5909: $cookie = &unescape($cookie);
5910: my $deleted = '';
5911: if ($cookie =~ /^$LONCAPA::match_domain\_$LONCAPA::match_username\_[a-f0-9]{32}$/) {
5912: my $execdir=$perlvar{'lonBalanceDir'};
5913: if (-e "$execdir/$cookie.id") {
5914: if (open(my $fh,'<',"$execdir/$cookie.id")) {
5915: my $dodelete;
5916: while (my $line = <$fh>) {
5917: chomp($line);
5918: if ($line eq $clientname) {
5919: $dodelete = 1;
5920: last;
5921: }
5922: }
5923: close($fh);
5924: if ($dodelete) {
5925: if (unlink("$execdir/$cookie.id")) {
5926: $deleted = 1;
5927: }
5928: }
5929: }
5930: }
5931: }
5932: if ($deleted) {
5933: &Reply($client, "ok\n", $userinput);
5934: } else {
5935: &Failure( $client, "error: ".($!+0)."Unlinking cookie file Failed ".
5936: "while attempting delbalcookie\n", $userinput);
5937: }
5938: return 1;
5939: }
5940: ®ister_handler("delbalcookie", \&del_balcookie_handler, 0, 1, 0);
5941:
5942: #
5943: # Processes the setannounce command. This command
5944: # creates a file named announce.txt in the top directory of
5945: # the documentn root and sets its contents. The announce.txt file is
5946: # printed in its entirety at the LonCAPA login page. Note:
5947: # once the announcement.txt fileis created it cannot be deleted.
5948: # However, setting the contents of the file to empty removes the
5949: # announcement from the login page of loncapa so who cares.
5950: #
5951: # Parameters:
5952: # $cmd - The command that got us dispatched.
5953: # $announcement - The text of the announcement.
5954: # $client - Socket open on the client process.
5955: # Retunrns:
5956: # 1 - Indicating request processing should continue
5957: # Side Effects:
5958: # The file {DocRoot}/announcement.txt is created.
5959: # A reply is sent to $client.
5960: #
5961: sub set_announce_handler {
5962: my ($cmd, $announcement, $client) = @_;
5963:
5964: my $userinput = "$cmd:$announcement";
5965:
5966: chomp($announcement);
5967: $announcement=&unescape($announcement);
5968: if (my $store=IO::File->new('>'.$perlvar{'lonDocRoot'}.
5969: '/announcement.txt')) {
5970: print $store $announcement;
5971: close $store;
5972: &Reply($client, "ok\n", $userinput);
5973: } else {
5974: &Failure($client, "error: ".($!+0)."\n", $userinput);
5975: }
5976:
5977: return 1;
5978: }
5979: ®ister_handler("setannounce", \&set_announce_handler, 0, 1, 0);
5980:
5981: #
5982: # Return the version of the daemon. This can be used to determine
5983: # the compatibility of cross version installations or, alternatively to
5984: # simply know who's out of date and who isn't. Note that the version
5985: # is returned concatenated with the tail.
5986: # Parameters:
5987: # $cmd - the request that dispatched to us.
5988: # $tail - Tail of the request (client's version?).
5989: # $client - Socket open on the client.
5990: #Returns:
5991: # 1 - continue processing requests.
5992: # Side Effects:
5993: # Replies with version to $client.
5994: sub get_version_handler {
5995: my ($cmd, $tail, $client) = @_;
5996:
5997: my $userinput = $cmd.$tail;
5998:
5999: &Reply($client, &version($userinput)."\n", $userinput);
6000:
6001:
6002: return 1;
6003: }
6004: ®ister_handler("version", \&get_version_handler, 0, 1, 0);
6005:
6006: # Set the current host and domain. This is used to support
6007: # multihomed systems. Each IP of the system, or even separate daemons
6008: # on the same IP can be treated as handling a separate lonCAPA virtual
6009: # machine. This command selects the virtual lonCAPA. The client always
6010: # knows the right one since it is lonc and it is selecting the domain/system
6011: # from the hosts.tab file.
6012: # Parameters:
6013: # $cmd - Command that dispatched us.
6014: # $tail - Tail of the command (domain/host requested).
6015: # $socket - Socket open on the client.
6016: #
6017: # Returns:
6018: # 1 - Indicates the program should continue to process requests.
6019: # Side-effects:
6020: # The default domain/system context is modified for this daemon.
6021: # a reply is sent to the client.
6022: #
6023: sub set_virtual_host_handler {
6024: my ($cmd, $tail, $socket) = @_;
6025:
6026: my $userinput ="$cmd:$tail";
6027:
6028: &Reply($client, &sethost($userinput)."\n", $userinput);
6029:
6030:
6031: return 1;
6032: }
6033: ®ister_handler("sethost", \&set_virtual_host_handler, 0, 1, 0);
6034:
6035: # Process a request to exit:
6036: # - "bye" is sent to the client.
6037: # - The client socket is shutdown and closed.
6038: # - We indicate to the caller that we should exit.
6039: # Formal Parameters:
6040: # $cmd - The command that got us here.
6041: # $tail - Tail of the command (empty).
6042: # $client - Socket open on the tail.
6043: # Returns:
6044: # 0 - Indicating the program should exit!!
6045: #
6046: sub exit_handler {
6047: my ($cmd, $tail, $client) = @_;
6048:
6049: my $userinput = "$cmd:$tail";
6050:
6051: &logthis("Client $clientip ($clientname) hanging up: $userinput");
6052: &Reply($client, "bye\n", $userinput);
6053: $client->shutdown(2); # shutdown the socket forcibly.
6054: $client->close();
6055:
6056: return 0;
6057: }
6058: ®ister_handler("exit", \&exit_handler, 0,1,1);
6059: ®ister_handler("init", \&exit_handler, 0,1,1);
6060: ®ister_handler("quit", \&exit_handler, 0,1,1);
6061:
6062: # Determine if auto-enrollment is enabled.
6063: # Note that the original had what I believe to be a defect.
6064: # The original returned 0 if the requestor was not a registerd client.
6065: # It should return "refused".
6066: # Formal Parameters:
6067: # $cmd - The command that invoked us.
6068: # $tail - The tail of the command (Extra command parameters.
6069: # $client - The socket open on the client that issued the request.
6070: # Returns:
6071: # 1 - Indicating processing should continue.
6072: #
6073: sub enrollment_enabled_handler {
6074: my ($cmd, $tail, $client) = @_;
6075: my $userinput = $cmd.":".$tail; # For logging purposes.
6076:
6077:
6078: my ($cdom) = split(/:/, $tail, 2); # Domain we're asking about.
6079:
6080: my $outcome = &localenroll::run($cdom);
6081: &Reply($client, \$outcome, $userinput);
6082:
6083: return 1;
6084: }
6085: ®ister_handler("autorun", \&enrollment_enabled_handler, 0, 1, 0);
6086:
6087: #
6088: # Validate an institutional code used for a LON-CAPA course.
6089: #
6090: # Formal Parameters:
6091: # $cmd - The command request that got us dispatched.
6092: # $tail - The tail of the command. In this case,
6093: # this is a colon separated set of words that will be split
6094: # into:
6095: # $dom - The domain for which the check of
6096: # institutional course code will occur.
6097: #
6098: # $instcode - The institutional code for the course
6099: # being requested, or validated for rights
6100: # to request.
6101: #
6102: # $owner - The course requestor (who will be the
6103: # course owner, in the form username:domain
6104: #
6105: # $client - Socket open on the client.
6106: # Returns:
6107: # 1 - Indicating processing should continue.
6108: #
6109: sub validate_instcode_handler {
6110: my ($cmd, $tail, $client) = @_;
6111: my $userinput = "$cmd:$tail";
6112: my ($dom,$instcode,$owner) = split(/:/, $tail);
6113: $instcode = &unescape($instcode);
6114: $owner = &unescape($owner);
6115: my ($outcome,$description,$credits) =
6116: &localenroll::validate_instcode($dom,$instcode,$owner);
6117: my $result = &escape($outcome).'&'.&escape($description).'&'.
6118: &escape($credits);
6119: &Reply($client, \$result, $userinput);
6120:
6121: return 1;
6122: }
6123: ®ister_handler("autovalidateinstcode", \&validate_instcode_handler, 0, 1, 0);
6124:
6125: #
6126: # Validate co-owner for cross-listed institutional code and
6127: # institutional course code itself used for a LON-CAPA course.
6128: #
6129: # Formal Parameters:
6130: # $cmd - The command request that got us dispatched.
6131: # $tail - The tail of the command. In this case,
6132: # this is a colon separated string containing:
6133: # $dom - Course's LON-CAPA domain
6134: # $instcode - Institutional course code for the course
6135: # $inst_xlist - Institutional course Id for the crosslisting
6136: # $coowner - Username of co-owner
6137: # (values for all but $dom have been escaped).
6138: #
6139: # $client - Socket open on the client.
6140: # Returns:
6141: # 1 - Indicating processing should continue.
6142: #
6143: sub validate_instcrosslist_handler {
6144: my ($cmd, $tail, $client) = @_;
6145: my $userinput = "$cmd:$tail";
6146: my ($dom,$instcode,$inst_xlist,$coowner) = split(/:/,$tail);
6147: $instcode = &unescape($instcode);
6148: $inst_xlist = &unescape($inst_xlist);
6149: $coowner = &unescape($coowner);
6150: my $outcome = &localenroll::validate_crosslist_access($dom,$instcode,
6151: $inst_xlist,$coowner);
6152: &Reply($client, \$outcome, $userinput);
6153:
6154: return 1;
6155: }
6156: ®ister_handler("autovalidateinstcrosslist", \&validate_instcrosslist_handler, 0, 1, 0);
6157:
6158: # Get the official sections for which auto-enrollment is possible.
6159: # Since the admin people won't know about 'unofficial sections'
6160: # we cannot auto-enroll on them.
6161: # Formal Parameters:
6162: # $cmd - The command request that got us dispatched here.
6163: # $tail - The remainder of the request. In our case this
6164: # will be split into:
6165: # $coursecode - The course name from the admin point of view.
6166: # $cdom - The course's domain(?).
6167: # $client - Socket open on the client.
6168: # Returns:
6169: # 1 - Indiciting processing should continue.
6170: #
6171: sub get_sections_handler {
6172: my ($cmd, $tail, $client) = @_;
6173: my $userinput = "$cmd:$tail";
6174:
6175: my ($coursecode, $cdom) = split(/:/, $tail);
6176: my @secs = &localenroll::get_sections($coursecode,$cdom);
6177: my $seclist = &escape(join(':',@secs));
6178:
6179: &Reply($client, \$seclist, $userinput);
6180:
6181:
6182: return 1;
6183: }
6184: ®ister_handler("autogetsections", \&get_sections_handler, 0, 1, 0);
6185:
6186: # Validate the owner of a new course section.
6187: #
6188: # Formal Parameters:
6189: # $cmd - Command that got us dispatched.
6190: # $tail - the remainder of the command. For us this consists of a
6191: # colon separated string containing:
6192: # $inst - Course Id from the institutions point of view.
6193: # $owner - Proposed owner of the course.
6194: # $cdom - Domain of the course (from the institutions
6195: # point of view?)..
6196: # $client - Socket open on the client.
6197: #
6198: # Returns:
6199: # 1 - Processing should continue.
6200: #
6201: sub validate_course_owner_handler {
6202: my ($cmd, $tail, $client) = @_;
6203: my $userinput = "$cmd:$tail";
6204: my ($inst_course_id, $owner, $cdom, $coowners) = split(/:/, $tail);
6205:
6206: $owner = &unescape($owner);
6207: $coowners = &unescape($coowners);
6208: my $outcome = &localenroll::new_course($inst_course_id,$owner,$cdom,$coowners);
6209: &Reply($client, \$outcome, $userinput);
6210:
6211:
6212:
6213: return 1;
6214: }
6215: ®ister_handler("autonewcourse", \&validate_course_owner_handler, 0, 1, 0);
6216:
6217: #
6218: # Validate a course section in the official schedule of classes
6219: # from the institutions point of view (part of autoenrollment).
6220: #
6221: # Formal Parameters:
6222: # $cmd - The command request that got us dispatched.
6223: # $tail - The tail of the command. In this case,
6224: # this is a colon separated set of words that will be split
6225: # into:
6226: # $inst_course_id - The course/section id from the
6227: # institutions point of view.
6228: # $cdom - The domain from the institutions
6229: # point of view.
6230: # $client - Socket open on the client.
6231: # Returns:
6232: # 1 - Indicating processing should continue.
6233: #
6234: sub validate_course_section_handler {
6235: my ($cmd, $tail, $client) = @_;
6236: my $userinput = "$cmd:$tail";
6237: my ($inst_course_id, $cdom) = split(/:/, $tail);
6238:
6239: my $outcome=&localenroll::validate_courseID($inst_course_id,$cdom);
6240: &Reply($client, \$outcome, $userinput);
6241:
6242:
6243: return 1;
6244: }
6245: ®ister_handler("autovalidatecourse", \&validate_course_section_handler, 0, 1, 0);
6246:
6247: #
6248: # Validate course owner's access to enrollment data for specific class section.
6249: #
6250: #
6251: # Formal Parameters:
6252: # $cmd - The command request that got us dispatched.
6253: # $tail - The tail of the command. In this case this is a colon separated
6254: # set of values that will be split into:
6255: # $inst_class - Institutional code for the specific class section
6256: # $ownerlist - An escaped comma-separated list of username:domain
6257: # of the course owner, and co-owner(s).
6258: # $cdom - The domain of the course from the institution's
6259: # point of view.
6260: # $client - The socket open on the client.
6261: # Returns:
6262: # 1 - continue processing.
6263: #
6264:
6265: sub validate_class_access_handler {
6266: my ($cmd, $tail, $client) = @_;
6267: my $userinput = "$cmd:$tail";
6268: my ($inst_class,$ownerlist,$cdom) = split(/:/, $tail);
6269: my $owners = &unescape($ownerlist);
6270: my $outcome;
6271: eval {
6272: local($SIG{__DIE__})='DEFAULT';
6273: $outcome=&localenroll::check_section($inst_class,$owners,$cdom);
6274: };
6275: &Reply($client,\$outcome, $userinput);
6276:
6277: return 1;
6278: }
6279: ®ister_handler("autovalidateclass_sec", \&validate_class_access_handler, 0, 1, 0);
6280:
6281: #
6282: # Modify institutional sections (using customized &instsec_reformat()
6283: # routine in localenroll.pm), to either clutter or declutter, for
6284: # purposes of ensuring an institutional course section (string) can
6285: # be unambiguously separated into institutional course and section.
6286: #
6287: # Formal Parameters:
6288: # $cmd - The command request that got us dispatched.
6289: # $tail - The tail of the command. In this case this is a colon separated
6290: # set of values that will be split into:
6291: # $cdom - The LON-CAPA domain of the course.
6292: # $action - Either: clutter or declutter
6293: # clutter adds character(s) to eliminate ambiguity
6294: # declutter removes the added characters (e.g., for
6295: # display of the institutional course section string.
6296: # $info - A frozen hash in which keys are:
6297: # LON-CAPA course number:Institutional course code
6298: # and values are a reference to an array of the
6299: # items to modify -- either institutional sections,
6300: # or institutional course sections (for crosslistings).
6301: # $client - The socket open on the client.
6302: # Returns:
6303: # 1 - continue processing.
6304: #
6305:
6306: sub instsec_reformat_handler {
6307: my ($cmd, $tail, $client) = @_;
6308: my $userinput = "$cmd:$tail";
6309: my ($cdom,$action,$info) = split(/:/,$tail);
6310: my $instsecref = &Apache::lonnet::thaw_unescape($info);
6311: my ($outcome,$result);
6312: eval {
6313: local($SIG{__DIE__})='DEFAULT';
6314: $outcome=&localenroll::instsec_reformat($cdom,$action,$instsecref);
6315: if ($outcome eq 'ok') {
6316: if (ref($instsecref) eq 'HASH') {
6317: foreach my $key (keys(%{$instsecref})) {
6318: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($instsecref->{$key}).'&';
6319: }
6320: $result =~ s/\&$//;
6321: }
6322: }
6323: };
6324: if (!$@) {
6325: if ($outcome eq 'ok') {
6326: &Reply( $client, \$result, $userinput);
6327: } else {
6328: &Reply($client,\$outcome, $userinput);
6329: }
6330: } else {
6331: &Failure($client,"unknown_cmd\n",$userinput);
6332: }
6333: return 1;
6334: }
6335: ®ister_handler("autoinstsecreformat",\&instsec_reformat_handler, 0, 1, 0);
6336:
6337: #
6338: # Validate course owner or co-owners(s) access to enrollment data for all sections
6339: # and crosslistings for a particular course.
6340: #
6341: #
6342: # Formal Parameters:
6343: # $cmd - The command request that got us dispatched.
6344: # $tail - The tail of the command. In this case this is a colon separated
6345: # set of values that will be split into:
6346: # $ownerlist - An escaped comma-separated list of username:domain
6347: # of the course owner, and co-owner(s).
6348: # $cdom - The domain of the course from the institution's
6349: # point of view.
6350: # $classes - Frozen hash of institutional course sections and
6351: # crosslistings.
6352: # $client - The socket open on the client.
6353: # Returns:
6354: # 1 - continue processing.
6355: #
6356:
6357: sub validate_classes_handler {
6358: my ($cmd, $tail, $client) = @_;
6359: my $userinput = "$cmd:$tail";
6360: my ($ownerlist,$cdom,$classes) = split(/:/, $tail);
6361: my $classesref = &Apache::lonnet::thaw_unescape($classes);
6362: my $owners = &unescape($ownerlist);
6363: my $result;
6364: eval {
6365: local($SIG{__DIE__})='DEFAULT';
6366: my %validations;
6367: my $response = &localenroll::check_instclasses($owners,$cdom,$classesref,
6368: \%validations);
6369: if ($response eq 'ok') {
6370: foreach my $key (keys(%validations)) {
6371: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($validations{$key}).'&';
6372: }
6373: $result =~ s/\&$//;
6374: } else {
6375: $result = 'error';
6376: }
6377: };
6378: if (!$@) {
6379: &Reply($client, \$result, $userinput);
6380: } else {
6381: &Failure($client,"unknown_cmd\n",$userinput);
6382: }
6383: return 1;
6384: }
6385: ®ister_handler("autovalidateinstclasses", \&validate_classes_handler, 0, 1, 0);
6386:
6387: #
6388: # Create a password for a new LON-CAPA user added by auto-enrollment.
6389: # Only used for case where authentication method for new user is localauth
6390: #
6391: # Formal Parameters:
6392: # $cmd - The command request that got us dispatched.
6393: # $tail - The tail of the command. In this case this is a colon separated
6394: # set of words that will be split into:
6395: # $authparam - An authentication parameter (localauth parameter).
6396: # $cdom - The domain of the course from the institution's
6397: # point of view.
6398: # $client - The socket open on the client.
6399: # Returns:
6400: # 1 - continue processing.
6401: #
6402: sub create_auto_enroll_password_handler {
6403: my ($cmd, $tail, $client) = @_;
6404: my $userinput = "$cmd:$tail";
6405:
6406: my ($authparam, $cdom) = split(/:/, $userinput);
6407:
6408: my ($create_passwd,$authchk);
6409: ($authparam,
6410: $create_passwd,
6411: $authchk) = &localenroll::create_password($authparam,$cdom);
6412:
6413: &Reply($client, &escape($authparam.':'.$create_passwd.':'.$authchk)."\n",
6414: $userinput);
6415:
6416:
6417: return 1;
6418: }
6419: ®ister_handler("autocreatepassword", \&create_auto_enroll_password_handler,
6420: 0, 1, 0);
6421:
6422: sub auto_export_grades_handler {
6423: my ($cmd, $tail, $client) = @_;
6424: my $userinput = "$cmd:$tail";
6425: my ($cdom,$cnum,$info,$data) = split(/:/,$tail);
6426: my $inforef = &Apache::lonnet::thaw_unescape($info);
6427: my $dataref = &Apache::lonnet::thaw_unescape($data);
6428: my ($outcome,$result);;
6429: eval {
6430: local($SIG{__DIE__})='DEFAULT';
6431: my %rtnhash;
6432: $outcome=&localenroll::export_grades($cdom,$cnum,$inforef,$dataref,\%rtnhash);
6433: if ($outcome eq 'ok') {
6434: foreach my $key (keys(%rtnhash)) {
6435: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($rtnhash{$key}).'&';
6436: }
6437: $result =~ s/\&$//;
6438: }
6439: };
6440: if (!$@) {
6441: if ($outcome eq 'ok') {
6442: if ($cipher) {
6443: my $cmdlength=length($result);
6444: $result.=" ";
6445: my $encresult='';
6446: for (my $encidx=0;$encidx<=$cmdlength;$encidx+=8) {
6447: $encresult.= unpack("H16",
6448: $cipher->encrypt(substr($result,
6449: $encidx,
6450: 8)));
6451: }
6452: &Reply( $client, "enc:$cmdlength:$encresult\n", $userinput);
6453: } else {
6454: &Failure( $client, "error:no_key\n", $userinput);
6455: }
6456: } else {
6457: &Reply($client, "$outcome\n", $userinput);
6458: }
6459: } else {
6460: &Failure($client,"export_error\n",$userinput);
6461: }
6462: return 1;
6463: }
6464: ®ister_handler("autoexportgrades", \&auto_export_grades_handler,
6465: 1, 1, 0);
6466:
6467: # Retrieve and remove temporary files created by/during autoenrollment.
6468: #
6469: # Formal Parameters:
6470: # $cmd - The command that got us dispatched.
6471: # $tail - The tail of the command. In our case this is a colon
6472: # separated list that will be split into:
6473: # $filename - The name of the file to retrieve.
6474: # The filename is given as a path relative to
6475: # the LonCAPA temp file directory.
6476: # $client - Socket open on the client.
6477: #
6478: # Returns:
6479: # 1 - Continue processing.
6480: sub retrieve_auto_file_handler {
6481: my ($cmd, $tail, $client) = @_;
6482: my $userinput = "cmd:$tail";
6483:
6484: my ($filename) = split(/:/, $tail);
6485:
6486: my $source = $perlvar{'lonDaemons'}.'/tmp/'.$filename;
6487:
6488: if ($filename =~m{/\.\./}) {
6489: &Failure($client, "refused\n", $userinput);
6490: } elsif ($filename !~ /^$LONCAPA::match_domain\_$LONCAPA::match_courseid\_.+_classlist\.xml$/) {
6491: &Failure($client, "refused\n", $userinput);
6492: } elsif ( (-e $source) && ($filename ne '') ) {
6493: my $reply = '';
6494: if (open(my $fh,$source)) {
6495: while (<$fh>) {
6496: chomp($_);
6497: $_ =~ s/^\s+//g;
6498: $_ =~ s/\s+$//g;
6499: $reply .= $_;
6500: }
6501: close($fh);
6502: &Reply($client, &escape($reply)."\n", $userinput);
6503:
6504: # Does this have to be uncommented??!? (RF).
6505: #
6506: # unlink($source);
6507: } else {
6508: &Failure($client, "error\n", $userinput);
6509: }
6510: } else {
6511: &Failure($client, "error\n", $userinput);
6512: }
6513:
6514:
6515: return 1;
6516: }
6517: ®ister_handler("autoretrieve", \&retrieve_auto_file_handler, 0,1,0);
6518:
6519: sub crsreq_checks_handler {
6520: my ($cmd, $tail, $client) = @_;
6521: my $userinput = "$cmd:$tail";
6522: my $dom = $tail;
6523: my $result;
6524: my @reqtypes = ('official','unofficial','community','textbook','placement');
6525: eval {
6526: local($SIG{__DIE__})='DEFAULT';
6527: my %validations;
6528: my $response = &localenroll::crsreq_checks($dom,\@reqtypes,
6529: \%validations);
6530: if ($response eq 'ok') {
6531: foreach my $key (keys(%validations)) {
6532: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($validations{$key}).'&';
6533: }
6534: $result =~ s/\&$//;
6535: } else {
6536: $result = 'error';
6537: }
6538: };
6539: if (!$@) {
6540: &Reply($client, \$result, $userinput);
6541: } else {
6542: &Failure($client,"unknown_cmd\n",$userinput);
6543: }
6544: return 1;
6545: }
6546: ®ister_handler("autocrsreqchecks", \&crsreq_checks_handler, 0, 1, 0);
6547:
6548: sub validate_crsreq_handler {
6549: my ($cmd, $tail, $client) = @_;
6550: my $userinput = "$cmd:$tail";
6551: my ($dom,$owner,$crstype,$inststatuslist,$instcode,$instseclist,$customdata) = split(/:/, $tail);
6552: $instcode = &unescape($instcode);
6553: $owner = &unescape($owner);
6554: $crstype = &unescape($crstype);
6555: $inststatuslist = &unescape($inststatuslist);
6556: $instcode = &unescape($instcode);
6557: $instseclist = &unescape($instseclist);
6558: my $custominfo = &Apache::lonnet::thaw_unescape($customdata);
6559: my $outcome;
6560: eval {
6561: local($SIG{__DIE__})='DEFAULT';
6562: $outcome = &localenroll::validate_crsreq($dom,$owner,$crstype,
6563: $inststatuslist,$instcode,
6564: $instseclist,$custominfo);
6565: };
6566: if (!$@) {
6567: &Reply($client, \$outcome, $userinput);
6568: } else {
6569: &Failure($client,"unknown_cmd\n",$userinput);
6570: }
6571: return 1;
6572: }
6573: ®ister_handler("autocrsreqvalidation", \&validate_crsreq_handler, 0, 1, 0);
6574:
6575: sub crsreq_update_handler {
6576: my ($cmd, $tail, $client) = @_;
6577: my $userinput = "$cmd:$tail";
6578: my ($cdom,$cnum,$crstype,$action,$ownername,$ownerdomain,$fullname,$title,$code,
6579: $accessstart,$accessend,$infohashref) =
6580: split(/:/, $tail);
6581: $crstype = &unescape($crstype);
6582: $action = &unescape($action);
6583: $ownername = &unescape($ownername);
6584: $ownerdomain = &unescape($ownerdomain);
6585: $fullname = &unescape($fullname);
6586: $title = &unescape($title);
6587: $code = &unescape($code);
6588: $accessstart = &unescape($accessstart);
6589: $accessend = &unescape($accessend);
6590: my $incoming = &Apache::lonnet::thaw_unescape($infohashref);
6591: my ($result,$outcome);
6592: eval {
6593: local($SIG{__DIE__})='DEFAULT';
6594: my %rtnhash;
6595: $outcome = &localenroll::crsreq_updates($cdom,$cnum,$crstype,$action,
6596: $ownername,$ownerdomain,$fullname,
6597: $title,$code,$accessstart,$accessend,
6598: $incoming,\%rtnhash);
6599: if ($outcome eq 'ok') {
6600: my @posskeys = qw(createdweb createdmsg createdcustomized createdactions queuedweb queuedmsg formitems reviewweb validationjs onload javascript);
6601: foreach my $key (keys(%rtnhash)) {
6602: if (grep(/^\Q$key\E/,@posskeys)) {
6603: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($rtnhash{$key}).'&';
6604: }
6605: }
6606: $result =~ s/\&$//;
6607: }
6608: };
6609: if (!$@) {
6610: if ($outcome eq 'ok') {
6611: &Reply($client, \$result, $userinput);
6612: } else {
6613: &Reply($client, "format_error\n", $userinput);
6614: }
6615: } else {
6616: &Failure($client,"unknown_cmd\n",$userinput);
6617: }
6618: return 1;
6619: }
6620: ®ister_handler("autocrsrequpdate", \&crsreq_update_handler, 0, 1, 0);
6621:
6622: #
6623: # Read and retrieve institutional code format (for support form).
6624: # Formal Parameters:
6625: # $cmd - Command that dispatched us.
6626: # $tail - Tail of the command. In this case it conatins
6627: # the course domain and the coursename.
6628: # $client - Socket open on the client.
6629: # Returns:
6630: # 1 - Continue processing.
6631: #
6632: sub get_institutional_code_format_handler {
6633: my ($cmd, $tail, $client) = @_;
6634: my $userinput = "$cmd:$tail";
6635:
6636: my $reply;
6637: my($cdom,$course) = split(/:/,$tail);
6638: my @pairs = split/\&/,$course;
6639: my %instcodes = ();
6640: my %codes = ();
6641: my @codetitles = ();
6642: my %cat_titles = ();
6643: my %cat_order = ();
6644: foreach (@pairs) {
6645: my ($key,$value) = split/=/,$_;
6646: $instcodes{&unescape($key)} = &unescape($value);
6647: }
6648: my $formatreply = &localenroll::instcode_format($cdom,
6649: \%instcodes,
6650: \%codes,
6651: \@codetitles,
6652: \%cat_titles,
6653: \%cat_order);
6654: if ($formatreply eq 'ok') {
6655: my $codes_str = &Apache::lonnet::hash2str(%codes);
6656: my $codetitles_str = &Apache::lonnet::array2str(@codetitles);
6657: my $cat_titles_str = &Apache::lonnet::hash2str(%cat_titles);
6658: my $cat_order_str = &Apache::lonnet::hash2str(%cat_order);
6659: &Reply($client,
6660: $codes_str.':'.$codetitles_str.':'.$cat_titles_str.':'
6661: .$cat_order_str."\n",
6662: $userinput);
6663: } else {
6664: # this else branch added by RF since if not ok, lonc will
6665: # hang waiting on reply until timeout.
6666: #
6667: &Reply($client, "format_error\n", $userinput);
6668: }
6669:
6670: return 1;
6671: }
6672: ®ister_handler("autoinstcodeformat",
6673: \&get_institutional_code_format_handler,0,1,0);
6674:
6675: sub get_institutional_defaults_handler {
6676: my ($cmd, $tail, $client) = @_;
6677: my $userinput = "$cmd:$tail";
6678:
6679: my $dom = $tail;
6680: my %defaults_hash;
6681: my @code_order;
6682: my $outcome;
6683: eval {
6684: local($SIG{__DIE__})='DEFAULT';
6685: $outcome = &localenroll::instcode_defaults($dom,\%defaults_hash,
6686: \@code_order);
6687: };
6688: if (!$@) {
6689: if ($outcome eq 'ok') {
6690: my $result='';
6691: while (my ($key,$value) = each(%defaults_hash)) {
6692: $result.=&escape($key).'='.&escape($value).'&';
6693: }
6694: $result .= 'code_order='.&escape(join('&',@code_order));
6695: &Reply($client,\$result,$userinput);
6696: } else {
6697: &Reply($client,"error\n", $userinput);
6698: }
6699: } else {
6700: &Failure($client,"unknown_cmd\n",$userinput);
6701: }
6702: }
6703: ®ister_handler("autoinstcodedefaults",
6704: \&get_institutional_defaults_handler,0,1,0);
6705:
6706: sub get_possible_instcodes_handler {
6707: my ($cmd, $tail, $client) = @_;
6708: my $userinput = "$cmd:$tail";
6709:
6710: my $reply;
6711: my $cdom = $tail;
6712: my (@codetitles,%cat_titles,%cat_order,@code_order);
6713: my $formatreply = &localenroll::possible_instcodes($cdom,
6714: \@codetitles,
6715: \%cat_titles,
6716: \%cat_order,
6717: \@code_order);
6718: if ($formatreply eq 'ok') {
6719: my $result = join('&',map {&escape($_);} (@codetitles)).':';
6720: $result .= join('&',map {&escape($_);} (@code_order)).':';
6721: foreach my $key (keys(%cat_titles)) {
6722: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($cat_titles{$key}).'&';
6723: }
6724: $result =~ s/\&$//;
6725: $result .= ':';
6726: foreach my $key (keys(%cat_order)) {
6727: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($cat_order{$key}).'&';
6728: }
6729: $result =~ s/\&$//;
6730: &Reply($client,\$result,$userinput);
6731: } else {
6732: &Reply($client, "format_error\n", $userinput);
6733: }
6734: return 1;
6735: }
6736: ®ister_handler("autopossibleinstcodes",
6737: \&get_possible_instcodes_handler,0,1,0);
6738:
6739: sub get_institutional_user_rules {
6740: my ($cmd, $tail, $client) = @_;
6741: my $userinput = "$cmd:$tail";
6742: my $dom = &unescape($tail);
6743: my (%rules_hash,@rules_order);
6744: my $outcome;
6745: eval {
6746: local($SIG{__DIE__})='DEFAULT';
6747: $outcome = &localenroll::username_rules($dom,\%rules_hash,\@rules_order);
6748: };
6749: if (!$@) {
6750: if ($outcome eq 'ok') {
6751: my $result;
6752: foreach my $key (keys(%rules_hash)) {
6753: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($rules_hash{$key}).'&';
6754: }
6755: $result =~ s/\&$//;
6756: $result .= ':';
6757: if (@rules_order > 0) {
6758: foreach my $item (@rules_order) {
6759: $result .= &escape($item).'&';
6760: }
6761: }
6762: $result =~ s/\&$//;
6763: &Reply($client,\$result,$userinput);
6764: } else {
6765: &Reply($client,"error\n", $userinput);
6766: }
6767: } else {
6768: &Failure($client,"unknown_cmd\n",$userinput);
6769: }
6770: }
6771: ®ister_handler("instuserrules",\&get_institutional_user_rules,0,1,0);
6772:
6773: sub get_institutional_id_rules {
6774: my ($cmd, $tail, $client) = @_;
6775: my $userinput = "$cmd:$tail";
6776: my $dom = &unescape($tail);
6777: my (%rules_hash,@rules_order);
6778: my $outcome;
6779: eval {
6780: local($SIG{__DIE__})='DEFAULT';
6781: $outcome = &localenroll::id_rules($dom,\%rules_hash,\@rules_order);
6782: };
6783: if (!$@) {
6784: if ($outcome eq 'ok') {
6785: my $result;
6786: foreach my $key (keys(%rules_hash)) {
6787: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($rules_hash{$key}).'&';
6788: }
6789: $result =~ s/\&$//;
6790: $result .= ':';
6791: if (@rules_order > 0) {
6792: foreach my $item (@rules_order) {
6793: $result .= &escape($item).'&';
6794: }
6795: }
6796: $result =~ s/\&$//;
6797: &Reply($client,\$result,$userinput);
6798: } else {
6799: &Reply($client,"error\n", $userinput);
6800: }
6801: } else {
6802: &Failure($client,"unknown_cmd\n",$userinput);
6803: }
6804: }
6805: ®ister_handler("instidrules",\&get_institutional_id_rules,0,1,0);
6806:
6807: sub get_institutional_selfcreate_rules {
6808: my ($cmd, $tail, $client) = @_;
6809: my $userinput = "$cmd:$tail";
6810: my $dom = &unescape($tail);
6811: my (%rules_hash,@rules_order);
6812: my $outcome;
6813: eval {
6814: local($SIG{__DIE__})='DEFAULT';
6815: $outcome = &localenroll::selfcreate_rules($dom,\%rules_hash,\@rules_order);
6816: };
6817: if (!$@) {
6818: if ($outcome eq 'ok') {
6819: my $result;
6820: foreach my $key (keys(%rules_hash)) {
6821: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($rules_hash{$key}).'&';
6822: }
6823: $result =~ s/\&$//;
6824: $result .= ':';
6825: if (@rules_order > 0) {
6826: foreach my $item (@rules_order) {
6827: $result .= &escape($item).'&';
6828: }
6829: }
6830: $result =~ s/\&$//;
6831: &Reply($client,\$result,$userinput);
6832: } else {
6833: &Reply($client,"error\n", $userinput);
6834: }
6835: } else {
6836: &Failure($client,"unknown_cmd\n",$userinput);
6837: }
6838: }
6839: ®ister_handler("instemailrules",\&get_institutional_selfcreate_rules,0,1,0);
6840:
6841: sub get_unamemap_rules {
6842: my ($cmd, $tail, $client) = @_;
6843: my $userinput = "$cmd:$tail";
6844: my $dom = &unescape($tail);
6845: my (%rules_hash,@rules_order);
6846: my $outcome;
6847: eval {
6848: local($SIG{__DIE__})='DEFAULT';
6849: $outcome = &localenroll::unamemap_rules($dom,\%rules_hash,\@rules_order);
6850: };
6851: if (!$@) {
6852: if ($outcome eq 'ok') {
6853: my $result;
6854: foreach my $key (keys(%rules_hash)) {
6855: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($rules_hash{$key}).'&';
6856: }
6857: $result =~ s/\&$//;
6858: $result .= ':';
6859: if (@rules_order > 0) {
6860: foreach my $item (@rules_order) {
6861: $result .= &escape($item).'&';
6862: }
6863: }
6864: $result =~ s/\&$//;
6865: &Reply($client,\$result,$userinput);
6866: } else {
6867: &Reply($client,"error\n", $userinput);
6868: }
6869: } else {
6870: &Failure($client,"unknown_cmd\n",$userinput);
6871: }
6872: }
6873: ®ister_handler("unamemaprules",\&get_unamemap_rules,0,1,0);
6874:
6875: sub institutional_username_check {
6876: my ($cmd, $tail, $client) = @_;
6877: my $userinput = "$cmd:$tail";
6878: my %rulecheck;
6879: my $outcome;
6880: my ($udom,$uname,@rules) = split(/:/,$tail);
6881: $udom = &unescape($udom);
6882: $uname = &unescape($uname);
6883: @rules = map {&unescape($_);} (@rules);
6884: eval {
6885: local($SIG{__DIE__})='DEFAULT';
6886: $outcome = &localenroll::username_check($udom,$uname,\@rules,\%rulecheck);
6887: };
6888: if (!$@) {
6889: if ($outcome eq 'ok') {
6890: my $result='';
6891: foreach my $key (keys(%rulecheck)) {
6892: $result.=&escape($key).'='.&Apache::lonnet::freeze_escape($rulecheck{$key}).'&';
6893: }
6894: &Reply($client,\$result,$userinput);
6895: } else {
6896: &Reply($client,"error\n", $userinput);
6897: }
6898: } else {
6899: &Failure($client,"unknown_cmd\n",$userinput);
6900: }
6901: }
6902: ®ister_handler("instrulecheck",\&institutional_username_check,0,1,0);
6903:
6904: sub institutional_id_check {
6905: my ($cmd, $tail, $client) = @_;
6906: my $userinput = "$cmd:$tail";
6907: my %rulecheck;
6908: my $outcome;
6909: my ($udom,$id,@rules) = split(/:/,$tail);
6910: $udom = &unescape($udom);
6911: $id = &unescape($id);
6912: @rules = map {&unescape($_);} (@rules);
6913: eval {
6914: local($SIG{__DIE__})='DEFAULT';
6915: $outcome = &localenroll::id_check($udom,$id,\@rules,\%rulecheck);
6916: };
6917: if (!$@) {
6918: if ($outcome eq 'ok') {
6919: my $result='';
6920: foreach my $key (keys(%rulecheck)) {
6921: $result.=&escape($key).'='.&Apache::lonnet::freeze_escape($rulecheck{$key}).'&';
6922: }
6923: &Reply($client,\$result,$userinput);
6924: } else {
6925: &Reply($client,"error\n", $userinput);
6926: }
6927: } else {
6928: &Failure($client,"unknown_cmd\n",$userinput);
6929: }
6930: }
6931: ®ister_handler("instidrulecheck",\&institutional_id_check,0,1,0);
6932:
6933: sub institutional_selfcreate_check {
6934: my ($cmd, $tail, $client) = @_;
6935: my $userinput = "$cmd:$tail";
6936: my %rulecheck;
6937: my $outcome;
6938: my ($udom,$email,@rules) = split(/:/,$tail);
6939: $udom = &unescape($udom);
6940: $email = &unescape($email);
6941: @rules = map {&unescape($_);} (@rules);
6942: eval {
6943: local($SIG{__DIE__})='DEFAULT';
6944: $outcome = &localenroll::selfcreate_check($udom,$email,\@rules,\%rulecheck);
6945: };
6946: if (!$@) {
6947: if ($outcome eq 'ok') {
6948: my $result='';
6949: foreach my $key (keys(%rulecheck)) {
6950: $result.=&escape($key).'='.&Apache::lonnet::freeze_escape($rulecheck{$key}).'&';
6951: }
6952: &Reply($client,\$result,$userinput);
6953: } else {
6954: &Reply($client,"error\n", $userinput);
6955: }
6956: } else {
6957: &Failure($client,"unknown_cmd\n",$userinput);
6958: }
6959: }
6960: ®ister_handler("instselfcreatecheck",\&institutional_selfcreate_check,0,1,0);
6961:
6962: # Get domain specific conditions for import of student photographs to a course
6963: #
6964: # Retrieves information from photo_permission subroutine in localenroll.
6965: # Returns outcome (ok) if no processing errors, and whether course owner is
6966: # required to accept conditions of use (yes/no).
6967: #
6968: #
6969: sub photo_permission_handler {
6970: my ($cmd, $tail, $client) = @_;
6971: my $userinput = "$cmd:$tail";
6972: my $cdom = $tail;
6973: my ($perm_reqd,$conditions);
6974: my $outcome;
6975: eval {
6976: local($SIG{__DIE__})='DEFAULT';
6977: $outcome = &localenroll::photo_permission($cdom,\$perm_reqd,
6978: \$conditions);
6979: };
6980: if (!$@) {
6981: &Reply($client, &escape($outcome.':'.$perm_reqd.':'. $conditions)."\n",
6982: $userinput);
6983: } else {
6984: &Failure($client,"unknown_cmd\n",$userinput);
6985: }
6986: return 1;
6987: }
6988: ®ister_handler("autophotopermission",\&photo_permission_handler,0,1,0);
6989:
6990: #
6991: # Checks if student photo is available for a user in the domain, in the user's
6992: # directory (in /userfiles/internal/studentphoto.jpg).
6993: # Uses localstudentphoto:fetch() to ensure there is an up to date copy of
6994: # the student's photo.
6995:
6996: sub photo_check_handler {
6997: my ($cmd, $tail, $client) = @_;
6998: my $userinput = "$cmd:$tail";
6999: my ($udom,$uname,$pid) = split(/:/,$tail);
7000: $udom = &unescape($udom);
7001: $uname = &unescape($uname);
7002: $pid = &unescape($pid);
7003: my $path=&propath($udom,$uname).'/userfiles/internal/';
7004: if (!-e $path) {
7005: &mkpath($path);
7006: }
7007: my $response;
7008: my $result = &localstudentphoto::fetch($udom,$uname,$pid,\$response);
7009: $result .= ':'.$response;
7010: &Reply($client, &escape($result)."\n",$userinput);
7011: return 1;
7012: }
7013: ®ister_handler("autophotocheck",\&photo_check_handler,0,1,0);
7014:
7015: #
7016: # Retrieve information from localenroll about whether to provide a button
7017: # for users who have enbled import of student photos to initiate an
7018: # update of photo files for registered students. Also include
7019: # comment to display alongside button.
7020:
7021: sub photo_choice_handler {
7022: my ($cmd, $tail, $client) = @_;
7023: my $userinput = "$cmd:$tail";
7024: my $cdom = &unescape($tail);
7025: my ($update,$comment);
7026: eval {
7027: local($SIG{__DIE__})='DEFAULT';
7028: ($update,$comment) = &localenroll::manager_photo_update($cdom);
7029: };
7030: if (!$@) {
7031: &Reply($client,&escape($update).':'.&escape($comment)."\n",$userinput);
7032: } else {
7033: &Failure($client,"unknown_cmd\n",$userinput);
7034: }
7035: return 1;
7036: }
7037: ®ister_handler("autophotochoice",\&photo_choice_handler,0,1,0);
7038:
7039: #
7040: # Gets a student's photo to exist (in the correct image type) in the user's
7041: # directory.
7042: # Formal Parameters:
7043: # $cmd - The command request that got us dispatched.
7044: # $tail - A colon separated set of words that will be split into:
7045: # $domain - student's domain
7046: # $uname - student username
7047: # $type - image type desired
7048: # $client - The socket open on the client.
7049: # Returns:
7050: # 1 - continue processing.
7051:
7052: sub student_photo_handler {
7053: my ($cmd, $tail, $client) = @_;
7054: my ($domain,$uname,$ext,$type) = split(/:/, $tail);
7055:
7056: my $path=&propath($domain,$uname). '/userfiles/internal/';
7057: my $filename = 'studentphoto.'.$ext;
7058: if ($type eq 'thumbnail') {
7059: $filename = 'studentphoto_tn.'.$ext;
7060: }
7061: if (-e $path.$filename) {
7062: &Reply($client,"ok\n","$cmd:$tail");
7063: return 1;
7064: }
7065: &mkpath($path);
7066: my $file;
7067: if ($type eq 'thumbnail') {
7068: eval {
7069: local($SIG{__DIE__})='DEFAULT';
7070: $file=&localstudentphoto::fetch_thumbnail($domain,$uname);
7071: };
7072: } else {
7073: $file=&localstudentphoto::fetch($domain,$uname);
7074: }
7075: if (!$file) {
7076: &Failure($client,"unavailable\n","$cmd:$tail");
7077: return 1;
7078: }
7079: if (!-e $path.$filename) { &convert_photo($file,$path.$filename); }
7080: if (-e $path.$filename) {
7081: &Reply($client,"ok\n","$cmd:$tail");
7082: return 1;
7083: }
7084: &Failure($client,"unable_to_convert\n","$cmd:$tail");
7085: return 1;
7086: }
7087: ®ister_handler("studentphoto", \&student_photo_handler, 0, 1, 0);
7088:
7089: sub inst_usertypes_handler {
7090: my ($cmd, $domain, $client) = @_;
7091: my $res;
7092: my $userinput = $cmd.":".$domain; # For logging purposes.
7093: my (%typeshash,@order,$result);
7094: eval {
7095: local($SIG{__DIE__})='DEFAULT';
7096: $result=&localenroll::inst_usertypes($domain,\%typeshash,\@order);
7097: };
7098: if ($result eq 'ok') {
7099: if (keys(%typeshash) > 0) {
7100: foreach my $key (keys(%typeshash)) {
7101: $res.=&escape($key).'='.&escape($typeshash{$key}).'&';
7102: }
7103: }
7104: $res=~s/\&$//;
7105: $res .= ':';
7106: if (@order > 0) {
7107: foreach my $item (@order) {
7108: $res .= &escape($item).'&';
7109: }
7110: }
7111: $res=~s/\&$//;
7112: }
7113: &Reply($client, \$res, $userinput);
7114: return 1;
7115: }
7116: ®ister_handler("inst_usertypes", \&inst_usertypes_handler, 0, 1, 0);
7117:
7118: # mkpath makes all directories for a file, expects an absolute path with a
7119: # file or a trailing / if just a dir is passed
7120: # returns 1 on success 0 on failure
7121: sub mkpath {
7122: my ($file)=@_;
7123: my @parts=split(/\//,$file,-1);
7124: my $now=$parts[0].'/'.$parts[1].'/'.$parts[2];
7125: for (my $i=3;$i<= ($#parts-1);$i++) {
7126: $now.='/'.$parts[$i];
7127: if (!-e $now) {
7128: if (!mkdir($now,0770)) { return 0; }
7129: }
7130: }
7131: return 1;
7132: }
7133:
7134: #---------------------------------------------------------------
7135: #
7136: # Getting, decoding and dispatching requests:
7137: #
7138: #
7139: # Get a Request:
7140: # Gets a Request message from the client. The transaction
7141: # is defined as a 'line' of text. We remove the new line
7142: # from the text line.
7143: #
7144: sub get_request {
7145: my $input = <$client>;
7146: chomp($input);
7147:
7148: &Debug("get_request: Request = $input\n");
7149:
7150: &status('Processing '.$clientname.':'.$input);
7151:
7152: return $input;
7153: }
7154: #---------------------------------------------------------------
7155: #
7156: # Process a request. This sub should shrink as each action
7157: # gets farmed out into a separat sub that is registered
7158: # with the dispatch hash.
7159: #
7160: # Parameters:
7161: # user_input - The request received from the client (lonc).
7162: #
7163: # Returns:
7164: # true to keep processing, false if caller should exit.
7165: #
7166: sub process_request {
7167: my ($userinput) = @_; # Easier for now to break style than to
7168: # fix all the userinput -> user_input.
7169: my $wasenc = 0; # True if request was encrypted.
7170: # ------------------------------------------------------------ See if encrypted
7171: # for command
7172: # sethost:<server>
7173: # <command>:<args>
7174: # we just send it to the processor
7175: # for
7176: # sethost:<server>:<command>:<args>
7177: # we do the implict set host and then do the command
7178: if ($userinput =~ /^sethost:/) {
7179: (my $cmd,my $newid,$userinput) = split(':',$userinput,3);
7180: if (defined($userinput)) {
7181: &sethost("$cmd:$newid");
7182: } else {
7183: $userinput = "$cmd:$newid";
7184: }
7185: }
7186:
7187: if ($userinput =~ /^enc/) {
7188: $userinput = decipher($userinput);
7189: $wasenc=1;
7190: if(!$userinput) { # Cipher not defined.
7191: &Failure($client, "error: Encrypted data without negotated key\n");
7192: return 0;
7193: }
7194: }
7195: Debug("process_request: $userinput\n");
7196:
7197: #
7198: # The 'correct way' to add a command to lond is now to
7199: # write a sub to execute it and Add it to the command dispatch
7200: # hash via a call to register_handler.. The comments to that
7201: # sub should give you enough to go on to show how to do this
7202: # along with the examples that are building up as this code
7203: # is getting refactored. Until all branches of the
7204: # if/elseif monster below have been factored out into
7205: # separate procesor subs, if the dispatch hash is missing
7206: # the command keyword, we will fall through to the remainder
7207: # of the if/else chain below in order to keep this thing in
7208: # working order throughout the transmogrification.
7209:
7210: my ($command, $tail) = split(/:/, $userinput, 2);
7211: chomp($command);
7212: chomp($tail);
7213: $tail =~ s/(\r)//; # This helps people debugging with e.g. telnet.
7214: $command =~ s/(\r)//; # And this too for parameterless commands.
7215: if(!$tail) {
7216: $tail =""; # defined but blank.
7217: }
7218:
7219: &Debug("Command received: $command, encoded = $wasenc");
7220:
7221: if(defined $Dispatcher{$command}) {
7222:
7223: my $dispatch_info = $Dispatcher{$command};
7224: my $handler = $$dispatch_info[0];
7225: my $need_encode = $$dispatch_info[1];
7226: my $client_types = $$dispatch_info[2];
7227: Debug("Matched dispatch hash: mustencode: $need_encode "
7228: ."ClientType $client_types");
7229:
7230: # Validate the request:
7231:
7232: my $ok = 1;
7233: my $requesterprivs = 0;
7234: if(&isClient()) {
7235: $requesterprivs |= $CLIENT_OK;
7236: }
7237: if(&isManager()) {
7238: $requesterprivs |= $MANAGER_OK;
7239: }
7240: if($need_encode && (!$wasenc)) {
7241: Debug("Must encode but wasn't: $need_encode $wasenc");
7242: $ok = 0;
7243: }
7244: if(($client_types & $requesterprivs) == 0) {
7245: Debug("Client not privileged to do this operation");
7246: $ok = 0;
7247: }
7248: if ($ok) {
7249: my $realcommand = $command;
7250: if ($command eq 'querysend') {
7251: my ($query,$rest)=split(/\:/,$tail,2);
7252: $query=~s/\n*$//g;
7253: my @possqueries =
7254: qw(userlog courselog fetchenrollment institutionalphotos usersearch instdirsearch getinstuser getmultinstusers);
7255: if (grep(/^\Q$query\E$/,@possqueries)) {
7256: $command .= '_'.$query;
7257: } elsif ($query eq 'prepare activity log') {
7258: $command .= '_activitylog';
7259: }
7260: }
7261: if (ref($trust{$command}) eq 'HASH') {
7262: my $donechecks;
7263: if ($trust{$command}{'anywhere'}) {
7264: $donechecks = 1;
7265: } elsif ($trust{$command}{'manageronly'}) {
7266: unless (&isManager()) {
7267: $ok = 0;
7268: }
7269: $donechecks = 1;
7270: } elsif ($trust{$command}{'institutiononly'}) {
7271: unless ($clientsameinst) {
7272: $ok = 0;
7273: }
7274: $donechecks = 1;
7275: } elsif ($clientsameinst) {
7276: $donechecks = 1;
7277: }
7278: unless ($donechecks) {
7279: foreach my $rule (keys(%{$trust{$command}})) {
7280: next if ($rule eq 'remote');
7281: if ($trust{$command}{$rule}) {
7282: if ($clientprohibited{$rule}) {
7283: $ok = 0;
7284: } else {
7285: $ok = 1;
7286: $donechecks = 1;
7287: last;
7288: }
7289: }
7290: }
7291: }
7292: unless ($donechecks) {
7293: if ($trust{$command}{'remote'}) {
7294: if ($clientremoteok) {
7295: $ok = 1;
7296: } else {
7297: $ok = 0;
7298: }
7299: }
7300: }
7301: }
7302: $command = $realcommand;
7303: }
7304:
7305: if($ok) {
7306: Debug("Dispatching to handler $command $tail");
7307: my $keep_going = &$handler($command, $tail, $client);
7308: return $keep_going;
7309: } else {
7310: Debug("Refusing to dispatch because client did not match requirements");
7311: Failure($client, "refused\n", $userinput);
7312: return 1;
7313: }
7314: }
7315:
7316: print $client "unknown_cmd\n";
7317: # -------------------------------------------------------------------- complete
7318: Debug("process_request - returning 1");
7319: return 1;
7320: }
7321: #
7322: # Decipher encoded traffic
7323: # Parameters:
7324: # input - Encoded data.
7325: # Returns:
7326: # Decoded data or undef if encryption key was not yet negotiated.
7327: # Implicit input:
7328: # cipher - This global holds the negotiated encryption key.
7329: #
7330: sub decipher {
7331: my ($input) = @_;
7332: my $output = '';
7333:
7334:
7335: if($cipher) {
7336: my($enc, $enclength, $encinput) = split(/:/, $input);
7337: for(my $encidx = 0; $encidx < length($encinput); $encidx += 16) {
7338: $output .=
7339: $cipher->decrypt(pack("H16", substr($encinput, $encidx, 16)));
7340: }
7341: return substr($output, 0, $enclength);
7342: } else {
7343: return undef;
7344: }
7345: }
7346:
7347: #
7348: # Register a command processor. This function is invoked to register a sub
7349: # to process a request. Once registered, the ProcessRequest sub can automatically
7350: # dispatch requests to an appropriate sub, and do the top level validity checking
7351: # as well:
7352: # - Is the keyword recognized.
7353: # - Is the proper client type attempting the request.
7354: # - Is the request encrypted if it has to be.
7355: # Parameters:
7356: # $request_name - Name of the request being registered.
7357: # This is the command request that will match
7358: # against the hash keywords to lookup the information
7359: # associated with the dispatch information.
7360: # $procedure - Reference to a sub to call to process the request.
7361: # All subs get called as follows:
7362: # Procedure($cmd, $tail, $replyfd, $key)
7363: # $cmd - the actual keyword that invoked us.
7364: # $tail - the tail of the request that invoked us.
7365: # $replyfd- File descriptor connected to the client
7366: # $must_encode - True if the request must be encoded to be good.
7367: # $client_ok - True if it's ok for a client to request this.
7368: # $manager_ok - True if it's ok for a manager to request this.
7369: # Side effects:
7370: # - On success, the Dispatcher hash has an entry added for the key $RequestName
7371: # - On failure, the program will die as it's a bad internal bug to try to
7372: # register a duplicate command handler.
7373: #
7374: sub register_handler {
7375: my ($request_name,$procedure,$must_encode, $client_ok,$manager_ok) = @_;
7376:
7377: # Don't allow duplication#
7378:
7379: if (defined $Dispatcher{$request_name}) {
7380: die "Attempting to define a duplicate request handler for $request_name\n";
7381: }
7382: # Build the client type mask:
7383:
7384: my $client_type_mask = 0;
7385: if($client_ok) {
7386: $client_type_mask |= $CLIENT_OK;
7387: }
7388: if($manager_ok) {
7389: $client_type_mask |= $MANAGER_OK;
7390: }
7391:
7392: # Enter the hash:
7393:
7394: my @entry = ($procedure, $must_encode, $client_type_mask);
7395:
7396: $Dispatcher{$request_name} = \@entry;
7397:
7398: }
7399:
7400:
7401: #------------------------------------------------------------------
7402:
7403:
7404:
7405:
7406: #
7407: # Convert an error return code from lcpasswd to a string value.
7408: #
7409: sub lcpasswdstrerror {
7410: my $ErrorCode = shift;
7411: if(($ErrorCode < 0) || ($ErrorCode > $lastpwderror)) {
7412: return "lcpasswd Unrecognized error return value ".$ErrorCode;
7413: } else {
7414: return $passwderrors[$ErrorCode];
7415: }
7416: }
7417:
7418: # grabs exception and records it to log before exiting
7419: sub catchexception {
7420: my ($error)=@_;
7421: $SIG{'QUIT'}='DEFAULT';
7422: $SIG{__DIE__}='DEFAULT';
7423: &status("Catching exception");
7424: &logthis("<font color='red'>CRITICAL: "
7425: ."ABNORMAL EXIT. Child $$ for server ".$perlvar{'lonHostID'}." died through "
7426: ."a crash with this error msg->[$error]</font>");
7427: &logthis('Famous last words: '.$status.' - '.$lastlog);
7428: if ($client) { print $client "error: $error\n"; }
7429: $server->close();
7430: die($error);
7431: }
7432: sub timeout {
7433: &status("Handling Timeout");
7434: &logthis("<font color='red'>CRITICAL: TIME OUT ".$$."</font>");
7435: &catchexception('Timeout');
7436: }
7437: # -------------------------------- Set signal handlers to record abnormal exits
7438:
7439:
7440: $SIG{'QUIT'}=\&catchexception;
7441: $SIG{__DIE__}=\&catchexception;
7442:
7443: # ---------------------------------- Read loncapa_apache.conf and loncapa.conf
7444: &status("Read loncapa.conf and loncapa_apache.conf");
7445: my $perlvarref=LONCAPA::Configuration::read_conf('loncapa.conf');
7446: %perlvar=%{$perlvarref};
7447: undef $perlvarref;
7448:
7449: # ----------------------------- Make sure this process is running from user=www
7450: my $wwwid=getpwnam('www');
7451: if ($wwwid!=$<) {
7452: my $emailto="$perlvar{'lonAdmEMail'},$perlvar{'lonSysEMail'}";
7453: my $subj="LON: $currenthostid User ID mismatch";
7454: system("echo 'User ID mismatch. lond must be run as user www.' |".
7455: " mail -s '$subj' $emailto > /dev/null");
7456: exit 1;
7457: }
7458:
7459: # --------------------------------------------- Check if other instance running
7460:
7461: my $pidfile="$perlvar{'lonDaemons'}/logs/lond.pid";
7462:
7463: if (-e $pidfile) {
7464: my $lfh=IO::File->new("$pidfile");
7465: my $pide=<$lfh>;
7466: chomp($pide);
7467: if (kill 0 => $pide) { die "already running"; }
7468: }
7469:
7470: # ------------------------------------------------------------- Read hosts file
7471:
7472:
7473:
7474: # establish SERVER socket, bind and listen.
7475: $server = IO::Socket::INET->new(LocalPort => $perlvar{'londPort'},
7476: Type => SOCK_STREAM,
7477: Proto => 'tcp',
7478: ReuseAddr => 1,
7479: Listen => 10 )
7480: or die "making socket: $@\n";
7481:
7482: # --------------------------------------------------------- Do global variables
7483:
7484: # global variables
7485:
7486: my %children = (); # keys are current child process IDs
7487:
7488: sub REAPER { # takes care of dead children
7489: $SIG{CHLD} = \&REAPER;
7490: &status("Handling child death");
7491: my $pid;
7492: do {
7493: $pid = waitpid(-1,&WNOHANG());
7494: if (defined($children{$pid})) {
7495: &logthis("Child $pid died");
7496: delete($children{$pid});
7497: } elsif ($pid > 0) {
7498: &logthis("Unknown Child $pid died");
7499: }
7500: } while ( $pid > 0 );
7501: foreach my $child (keys(%children)) {
7502: $pid = waitpid($child,&WNOHANG());
7503: if ($pid > 0) {
7504: &logthis("Child $child - $pid looks like we missed it's death");
7505: delete($children{$pid});
7506: }
7507: }
7508: &status("Finished Handling child death");
7509: }
7510:
7511: sub HUNTSMAN { # signal handler for SIGINT
7512: &status("Killing children (INT)");
7513: local($SIG{CHLD}) = 'IGNORE'; # we're going to kill our children
7514: kill 'INT' => keys %children;
7515: &logthis("Free socket: ".shutdown($server,2)); # free up socket
7516: my $execdir=$perlvar{'lonDaemons'};
7517: unlink("$execdir/logs/lond.pid");
7518: &logthis("<font color='red'>CRITICAL: Shutting down</font>");
7519: &status("Done killing children");
7520: exit; # clean up with dignity
7521: }
7522:
7523: sub HUPSMAN { # signal handler for SIGHUP
7524: local($SIG{CHLD}) = 'IGNORE'; # we're going to kill our children
7525: &status("Killing children for restart (HUP)");
7526: kill 'INT' => keys %children;
7527: &logthis("Free socket: ".shutdown($server,2)); # free up socket
7528: &logthis("<font color='red'>CRITICAL: Restarting</font>");
7529: my $execdir=$perlvar{'lonDaemons'};
7530: unlink("$execdir/logs/lond.pid");
7531: &status("Restarting self (HUP)");
7532: exec("$execdir/lond"); # here we go again
7533: }
7534:
7535: #
7536: # Reload the Apache daemon's state.
7537: # This is done by invoking /home/httpd/perl/apachereload
7538: # a setuid perl script that can be root for us to do this job.
7539: #
7540: sub ReloadApache {
7541: # --------------------------- Handle case of another apachereload process (locking)
7542: if (&LONCAPA::try_to_lock('/tmp/lock_apachereload')) {
7543: my $execdir = $perlvar{'lonDaemons'};
7544: my $script = $execdir."/apachereload";
7545: system($script);
7546: unlink('/tmp/lock_apachereload'); # Remove the lock file.
7547: }
7548: }
7549:
7550: #
7551: # Called in response to a USR2 signal.
7552: # - Reread hosts.tab
7553: # - All children connected to hosts that were removed from hosts.tab
7554: # are killed via SIGINT
7555: # - All children connected to previously existing hosts are sent SIGUSR1
7556: # - Our internal hosts hash is updated to reflect the new contents of
7557: # hosts.tab causing connections from hosts added to hosts.tab to
7558: # now be honored.
7559: #
7560: sub UpdateHosts {
7561: &status("Reload hosts.tab");
7562: logthis('<font color="blue"> Updating connections </font>');
7563: #
7564: # The %children hash has the set of IP's we currently have children
7565: # on. These need to be matched against records in the hosts.tab
7566: # Any ip's no longer in the table get killed off they correspond to
7567: # either dropped or changed hosts. Note that the re-read of the table
7568: # will take care of new and changed hosts as connections come into being.
7569:
7570: &Apache::lonnet::reset_hosts_info();
7571: my %active;
7572:
7573: foreach my $child (keys(%children)) {
7574: my $childip = $children{$child};
7575: if ($childip ne '127.0.0.1'
7576: && !defined(&Apache::lonnet::get_hosts_from_ip($childip))) {
7577: logthis('<font color="blue"> UpdateHosts killing child '
7578: ." $child for ip $childip </font>");
7579: kill('INT', $child);
7580: } else {
7581: $active{$child} = $childip;
7582: logthis('<font color="green"> keeping child for ip '
7583: ." $childip (pid=$child) </font>");
7584: }
7585: }
7586:
7587: my %oldconf = %secureconf;
7588: my %connchange;
7589: if (lonssl::Read_Connect_Config(\%secureconf,\%perlvar,\%crlchecked) eq 'ok') {
7590: logthis('<font color="blue"> Reloaded SSL connection rules and cleared CRL checking history </font>');
7591: } else {
7592: logthis('<font color="yellow"> Failed to reload SSL connection rules and clear CRL checking history </font>');
7593: }
7594: if ((ref($oldconf{'connfrom'}) eq 'HASH') && (ref($secureconf{'connfrom'}) eq 'HASH')) {
7595: foreach my $type ('dom','intdom','other') {
7596: if ((($oldconf{'connfrom'}{$type} eq 'no') && ($secureconf{'connfrom'}{$type} eq 'req')) ||
7597: (($oldconf{'connfrom'}{$type} eq 'req') && ($secureconf{'connfrom'}{$type} eq 'no'))) {
7598: $connchange{$type} = 1;
7599: }
7600: }
7601: }
7602: if (keys(%connchange)) {
7603: foreach my $child (keys(%active)) {
7604: my $childip = $active{$child};
7605: if ($childip ne '127.0.0.1') {
7606: my $childhostname = gethostbyaddr(Socket::inet_aton($childip),AF_INET);
7607: if ($childhostname ne '') {
7608: my $childlonhost = &Apache::lonnet::get_server_homeID($childhostname);
7609: my ($samedom,$sameinst) = &set_client_info($childlonhost);
7610: if ($samedom) {
7611: if ($connchange{'dom'}) {
7612: logthis('<font color="blue"> UpdateHosts killing child '
7613: ." $child for ip $childip </font>");
7614: kill('INT', $child);
7615: }
7616: } elsif ($sameinst) {
7617: if ($connchange{'intdom'}) {
7618: logthis('<font color="blue"> UpdateHosts killing child '
7619: ." $child for ip $childip </font>");
7620: kill('INT', $child);
7621: }
7622: } else {
7623: if ($connchange{'other'}) {
7624: logthis('<font color="blue"> UpdateHosts killing child '
7625: ." $child for ip $childip </font>");
7626: kill('INT', $child);
7627: }
7628: }
7629: }
7630: }
7631: }
7632: }
7633: ReloadApache;
7634: &status("Finished reloading hosts.tab");
7635: }
7636:
7637: sub checkchildren {
7638: &status("Checking on the children (sending signals)");
7639: &initnewstatus();
7640: &logstatus();
7641: &logthis('Going to check on the children');
7642: my $docdir=$perlvar{'lonDocRoot'};
7643: foreach (sort keys %children) {
7644: #sleep 1;
7645: unless (kill 'USR1' => $_) {
7646: &logthis ('Child '.$_.' is dead');
7647: &logstatus($$.' is dead');
7648: delete($children{$_});
7649: }
7650: }
7651: sleep 5;
7652: $SIG{ALRM} = sub { Debug("timeout");
7653: die "timeout"; };
7654: $SIG{__DIE__} = 'DEFAULT';
7655: &status("Checking on the children (waiting for reports)");
7656: foreach (sort keys %children) {
7657: unless (-e "$docdir/lon-status/londchld/$_.txt") {
7658: eval {
7659: alarm(300);
7660: &logthis('Child '.$_.' did not respond');
7661: kill 9 => $_;
7662: #$emailto="$perlvar{'lonAdmEMail'},$perlvar{'lonSysEMail'}";
7663: #$subj="LON: $currenthostid killed lond process $_";
7664: #my $result=`echo 'Killed lond process $_.' | mailto $emailto -s '$subj' > /dev/null`;
7665: #$execdir=$perlvar{'lonDaemons'};
7666: #$result=`/bin/cp $execdir/logs/lond.log $execdir/logs/lond.log.$_`;
7667: delete($children{$_});
7668: alarm(0);
7669: }
7670: }
7671: }
7672: $SIG{ALRM} = 'DEFAULT';
7673: $SIG{__DIE__} = \&catchexception;
7674: &status("Finished checking children");
7675: &logthis('Finished Checking children');
7676: }
7677:
7678: # --------------------------------------------------------------------- Logging
7679:
7680: sub logthis {
7681: my $message=shift;
7682: my $execdir=$perlvar{'lonDaemons'};
7683: my $fh=IO::File->new(">>$execdir/logs/lond.log");
7684: my $now=time;
7685: my $local=localtime($now);
7686: $lastlog=$local.': '.$message;
7687: print $fh "$local ($$): $message\n";
7688: }
7689:
7690: # ------------------------- Conditional log if $DEBUG true.
7691: sub Debug {
7692: my $message = shift;
7693: if($DEBUG) {
7694: &logthis($message);
7695: }
7696: }
7697:
7698: #
7699: # Sub to do replies to client.. this gives a hook for some
7700: # debug tracing too:
7701: # Parameters:
7702: # fd - File open on client.
7703: # reply - Text to send to client.
7704: # request - Original request from client.
7705: #
7706: #NOTE $reply must be terminated by exactly *one* \n. If $reply is a reference
7707: #this is done automatically ($$reply must not contain any \n in this case).
7708: #If $reply is a string the caller has to ensure this.
7709: sub Reply {
7710: my ($fd, $reply, $request) = @_;
7711: if (ref($reply)) {
7712: print $fd $$reply;
7713: print $fd "\n";
7714: if ($DEBUG) { Debug("Request was $request Reply was $$reply"); }
7715: } else {
7716: print $fd $reply;
7717: if ($DEBUG) { Debug("Request was $request Reply was $reply"); }
7718: }
7719: $Transactions++;
7720: }
7721:
7722:
7723: #
7724: # Sub to report a failure.
7725: # This function:
7726: # - Increments the failure statistic counters.
7727: # - Invokes Reply to send the error message to the client.
7728: # Parameters:
7729: # fd - File descriptor open on the client
7730: # reply - Reply text to emit.
7731: # request - The original request message (used by Reply
7732: # to debug if that's enabled.
7733: # Implicit outputs:
7734: # $Failures- The number of failures is incremented.
7735: # Reply (invoked here) sends a message to the
7736: # client:
7737: #
7738: sub Failure {
7739: my $fd = shift;
7740: my $reply = shift;
7741: my $request = shift;
7742:
7743: $Failures++;
7744: Reply($fd, $reply, $request); # That's simple eh?
7745: }
7746: # ------------------------------------------------------------------ Log status
7747:
7748: sub logstatus {
7749: &status("Doing logging");
7750: my $docdir=$perlvar{'lonDocRoot'};
7751: {
7752: my $fh=IO::File->new(">$docdir/lon-status/londchld/$$.txt");
7753: print $fh $status."\n".$lastlog."\n".time."\n$keymode";
7754: $fh->close();
7755: }
7756: &status("Finished $$.txt");
7757: {
7758: open(LOG,">>$docdir/lon-status/londstatus.txt");
7759: flock(LOG,LOCK_EX);
7760: print LOG $$."\t".$clientname."\t".$currenthostid."\t"
7761: .$status."\t".$lastlog."\t $keymode\n";
7762: flock(LOG,LOCK_UN);
7763: close(LOG);
7764: }
7765: &status("Finished logging");
7766: }
7767:
7768: sub initnewstatus {
7769: my $docdir=$perlvar{'lonDocRoot'};
7770: my $fh=IO::File->new(">$docdir/lon-status/londstatus.txt");
7771: my $now=time();
7772: my $local=localtime($now);
7773: print $fh "LOND status $local - parent $$\n\n";
7774: opendir(DIR,"$docdir/lon-status/londchld");
7775: while (my $filename=readdir(DIR)) {
7776: unlink("$docdir/lon-status/londchld/$filename");
7777: }
7778: closedir(DIR);
7779: }
7780:
7781: # -------------------------------------------------------------- Status setting
7782:
7783: sub status {
7784: my $what=shift;
7785: my $now=time;
7786: my $local=localtime($now);
7787: $status=$local.': '.$what;
7788: $0='lond: '.$what.' '.$local;
7789: }
7790:
7791: # -------------------------------------------------------------- Talk to lonsql
7792:
7793: sub sql_reply {
7794: my ($cmd)=@_;
7795: my $answer=&sub_sql_reply($cmd);
7796: if ($answer eq 'con_lost') { $answer=&sub_sql_reply($cmd); }
7797: return $answer;
7798: }
7799:
7800: sub sub_sql_reply {
7801: my ($cmd)=@_;
7802: my $unixsock="mysqlsock";
7803: my $peerfile="$perlvar{'lonSockDir'}/$unixsock";
7804: my $sclient=IO::Socket::UNIX->new(Peer =>"$peerfile",
7805: Type => SOCK_STREAM,
7806: Timeout => 10)
7807: or return "con_lost";
7808: print $sclient "$cmd:$currentdomainid\n";
7809: my $answer=<$sclient>;
7810: chomp($answer);
7811: if (!$answer) { $answer="con_lost"; }
7812: return $answer;
7813: }
7814:
7815: # --------------------------------------- Is this the home server of an author?
7816:
7817: sub ishome {
7818: my $author=shift;
7819: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
7820: my ($udom,$uname)=split(/\//,$author);
7821: my $proname=propath($udom,$uname);
7822: if (-e $proname) {
7823: return 'owner';
7824: } else {
7825: return 'not_owner';
7826: }
7827: }
7828:
7829: # ======================================================= Continue main program
7830: # ---------------------------------------------------- Fork once and dissociate
7831:
7832: my $fpid=fork;
7833: exit if $fpid;
7834: die "Couldn't fork: $!" unless defined ($fpid);
7835:
7836: POSIX::setsid() or die "Can't start new session: $!";
7837:
7838: # ------------------------------------------------------- Write our PID on disk
7839:
7840: my $execdir=$perlvar{'lonDaemons'};
7841: open (PIDSAVE,">$execdir/logs/lond.pid");
7842: print PIDSAVE "$$\n";
7843: close(PIDSAVE);
7844: &logthis("<font color='red'>CRITICAL: ---------- Starting ----------</font>");
7845: &status('Starting');
7846:
7847:
7848:
7849: # ----------------------------------------------------- Install signal handlers
7850:
7851:
7852: $SIG{CHLD} = \&REAPER;
7853: $SIG{INT} = $SIG{TERM} = \&HUNTSMAN;
7854: $SIG{HUP} = \&HUPSMAN;
7855: $SIG{USR1} = \&checkchildren;
7856: $SIG{USR2} = \&UpdateHosts;
7857:
7858: # Read the host hashes:
7859: &Apache::lonnet::load_hosts_tab();
7860: my %iphost = &Apache::lonnet::get_iphost(1);
7861:
7862: $dist=`$perlvar{'lonDaemons'}/distprobe`;
7863:
7864: my $arch = `uname -i`;
7865: chomp($arch);
7866: if ($arch eq 'unknown') {
7867: $arch = `uname -m`;
7868: chomp($arch);
7869: }
7870:
7871: unless (lonssl::Read_Connect_Config(\%secureconf,\%perlvar,\%crlchecked) eq 'ok') {
7872: &logthis('<font color="blue">No connectionrules table. Will fallback to loncapa.conf</font>');
7873: }
7874:
7875: # --------------------------------------------------------------
7876: # Accept connections. When a connection comes in, it is validated
7877: # and if good, a child process is created to process transactions
7878: # along the connection.
7879:
7880: while (1) {
7881: &status('Starting accept');
7882: $client = $server->accept() or next;
7883: &status('Accepted '.$client.' off to spawn');
7884: make_new_child($client);
7885: &status('Finished spawning');
7886: }
7887:
7888: sub make_new_child {
7889: my $pid;
7890: # my $cipher; # Now global
7891: my $sigset;
7892:
7893: $client = shift;
7894: &status('Starting new child '.$client);
7895: &logthis('<font color="green"> Attempting to start child ('.$client.
7896: ")</font>");
7897: # block signal for fork
7898: $sigset = POSIX::SigSet->new(SIGINT);
7899: sigprocmask(SIG_BLOCK, $sigset)
7900: or die "Can't block SIGINT for fork: $!\n";
7901:
7902: die "fork: $!" unless defined ($pid = fork);
7903:
7904: $client->sockopt(SO_KEEPALIVE, 1); # Enable monitoring of
7905: # connection liveness.
7906:
7907: #
7908: # Figure out who we're talking to so we can record the peer in
7909: # the pid hash.
7910: #
7911: my $caller = getpeername($client);
7912: my ($port,$iaddr);
7913: if (defined($caller) && length($caller) > 0) {
7914: ($port,$iaddr)=unpack_sockaddr_in($caller);
7915: } else {
7916: &logthis("Unable to determine who caller was, getpeername returned nothing");
7917: }
7918: if (defined($iaddr)) {
7919: $clientip = inet_ntoa($iaddr);
7920: Debug("Connected with $clientip");
7921: } else {
7922: &logthis("Unable to determine clientip");
7923: $clientip='Unavailable';
7924: }
7925:
7926: if ($pid) {
7927: # Parent records the child's birth and returns.
7928: sigprocmask(SIG_UNBLOCK, $sigset)
7929: or die "Can't unblock SIGINT for fork: $!\n";
7930: $children{$pid} = $clientip;
7931: &status('Started child '.$pid);
7932: close($client);
7933: return;
7934: } else {
7935: # Child can *not* return from this subroutine.
7936: $SIG{INT} = 'DEFAULT'; # make SIGINT kill us as it did before
7937: $SIG{CHLD} = 'DEFAULT'; #make this default so that pwauth returns
7938: #don't get intercepted
7939: $SIG{USR1}= \&logstatus;
7940: $SIG{ALRM}= \&timeout;
7941: #
7942: # Block sigpipe as it gets thrownon socket disconnect and we want to
7943: # deal with that as a read faiure instead.
7944: #
7945: my $blockset = POSIX::SigSet->new(SIGPIPE);
7946: sigprocmask(SIG_BLOCK, $blockset);
7947:
7948: $lastlog='Forked ';
7949: $status='Forked';
7950:
7951: # unblock signals
7952: sigprocmask(SIG_UNBLOCK, $sigset)
7953: or die "Can't unblock SIGINT for fork: $!\n";
7954:
7955: # my $tmpsnum=0; # Now global
7956: #---------------------------------------------------- kerberos 5 initialization
7957: &Authen::Krb5::init_context();
7958:
7959: my $no_ets;
7960: if ($dist =~ /^(?:centos|rhes|scientific|oracle|rocky|alma)(\d+)/) {
7961: if ($1 >= 7) {
7962: $no_ets = 1;
7963: }
7964: } elsif ($dist =~ /^suse(\d+\.\d+)$/) {
7965: if (($1 eq '9.3') || ($1 >= 12.2)) {
7966: $no_ets = 1;
7967: }
7968: } elsif ($dist =~ /^sles(\d+)$/) {
7969: if ($1 > 11) {
7970: $no_ets = 1;
7971: }
7972: } elsif ($dist =~ /^fedora(\d+)$/) {
7973: if ($1 < 7) {
7974: $no_ets = 1;
7975: }
7976: }
7977: unless ($no_ets) {
7978: &Authen::Krb5::init_ets();
7979: }
7980:
7981: &status('Accepted connection');
7982: # =============================================================================
7983: # do something with the connection
7984: # -----------------------------------------------------------------------------
7985: # see if we know client and 'check' for spoof IP by ineffective challenge
7986:
7987: my $outsideip=$clientip;
7988: if ($clientip eq '127.0.0.1') {
7989: $outsideip=&Apache::lonnet::get_host_ip($perlvar{'lonHostID'});
7990: }
7991: &ReadManagerTable();
7992: my $clientrec=defined(&Apache::lonnet::get_hosts_from_ip($outsideip));
7993: my $ismanager=($managers{$outsideip} ne undef);
7994: $clientname = "[unknown]";
7995: if($clientrec) { # Establish client type.
7996: $ConnectionType = "client";
7997: $clientname = (&Apache::lonnet::get_hosts_from_ip($outsideip))[-1];
7998: if($ismanager) {
7999: $ConnectionType = "both";
8000: }
8001: } else {
8002: $ConnectionType = "manager";
8003: $clientname = $managers{$outsideip};
8004: }
8005: my $clientok;
8006:
8007: if ($clientrec || $ismanager) {
8008: &status("Waiting for init from $clientip $clientname");
8009: &logthis('<font color="yellow">INFO: Connection, '.
8010: $clientip.
8011: " ($clientname) connection type = $ConnectionType </font>" );
8012: &status("Connecting $clientip ($clientname))");
8013: my $remotereq=<$client>;
8014: chomp($remotereq);
8015: Debug("Got init: $remotereq");
8016:
8017: if ($remotereq =~ /^init/) {
8018: &sethost("sethost:$perlvar{'lonHostID'}");
8019: #
8020: # If the remote is attempting a local init... give that a try:
8021: #
8022: (my $i, my $inittype, $clientversion) = split(/:/, $remotereq);
8023: # For LON-CAPA 2.9, the client session will have sent its LON-CAPA
8024: # version when initiating the connection. For LON-CAPA 2.8 and older,
8025: # the version is retrieved from the global %loncaparevs in lonnet.pm.
8026: # $clientversion contains path to keyfile if $inittype eq 'local'
8027: # it's overridden below in this case
8028: $clientversion ||= $Apache::lonnet::loncaparevs{$clientname};
8029:
8030: # If the connection type is ssl, but I didn't get my
8031: # certificate files yet, then I'll drop back to
8032: # insecure (if allowed).
8033:
8034: if ($inittype eq "ssl") {
8035: my $context;
8036: if ($clientsamedom) {
8037: $context = 'dom';
8038: if ($secureconf{'connfrom'}{'dom'} eq 'no') {
8039: $inittype = "";
8040: }
8041: } elsif ($clientsameinst) {
8042: $context = 'intdom';
8043: if ($secureconf{'connfrom'}{'intdom'} eq 'no') {
8044: $inittype = "";
8045: }
8046: } else {
8047: $context = 'other';
8048: if ($secureconf{'connfrom'}{'other'} eq 'no') {
8049: $inittype = "";
8050: }
8051: }
8052: if ($inittype eq '') {
8053: &logthis("<font color=\"blue\"> Domain config set "
8054: ."to no ssl for $clientname (context: $context)"
8055: ." -- trying insecure auth</font>");
8056: }
8057: }
8058:
8059: if($inittype eq "ssl") {
8060: my ($ca, $cert) = lonssl::CertificateFile;
8061: my $kfile = lonssl::KeyFile;
8062: if((!$ca) ||
8063: (!$cert) ||
8064: (!$kfile)) {
8065: $inittype = ""; # This forces insecure attempt.
8066: &logthis("<font color=\"blue\"> Certificates not "
8067: ."installed -- trying insecure auth</font>");
8068: } else { # SSL certificates are in place so
8069: } # Leave the inittype alone.
8070: }
8071:
8072: if($inittype eq "local") {
8073: $clientversion = $perlvar{'lonVersion'};
8074: my $key = LocalConnection($client, $remotereq);
8075: if($key) {
8076: Debug("Got local key $key");
8077: $clientok = 1;
8078: my $cipherkey = pack("H32", $key);
8079: $cipher = new IDEA($cipherkey);
8080: print $client "ok:local\n";
8081: &logthis('<font color="green">'
8082: . "Successful local authentication </font>");
8083: $keymode = "local"
8084: } else {
8085: Debug("Failed to get local key");
8086: $clientok = 0;
8087: shutdown($client, 3);
8088: close $client;
8089: }
8090: } elsif ($inittype eq "ssl") {
8091: my $key = SSLConnection($client,$clientname);
8092: if ($key) {
8093: $clientok = 1;
8094: my $cipherkey = pack("H32", $key);
8095: $cipher = new IDEA($cipherkey);
8096: &logthis('<font color="green">'
8097: ."Successfull ssl authentication with $clientname </font>");
8098: $keymode = "ssl";
8099:
8100: } else {
8101: $clientok = 0;
8102: close $client;
8103: }
8104:
8105: } else {
8106: my $ok = InsecureConnection($client);
8107: if($ok) {
8108: $clientok = 1;
8109: &logthis('<font color="green">'
8110: ."Successful insecure authentication with $clientname </font>");
8111: print $client "ok\n";
8112: $keymode = "insecure";
8113: } else {
8114: &logthis('<font color="yellow">'
8115: ."Attempted insecure connection disallowed </font>");
8116: close $client;
8117: $clientok = 0;
8118: }
8119: }
8120: } else {
8121: &logthis(
8122: "<font color='blue'>WARNING: "
8123: ."$clientip failed to initialize: >$remotereq< </font>");
8124: &status('No init '.$clientip);
8125: }
8126: } else {
8127: &logthis(
8128: "<font color='blue'>WARNING: Unknown client $clientip</font>");
8129: &status('Hung up on '.$clientip);
8130: }
8131:
8132: if ($clientok) {
8133: # ---------------- New known client connecting, could mean machine online again
8134: if (&Apache::lonnet::get_host_ip($currenthostid) ne $clientip
8135: && $clientip ne '127.0.0.1') {
8136: &Apache::lonnet::reconlonc($clientname);
8137: }
8138: &logthis("<font color='green'>Established connection: $clientname</font>");
8139: &status('Will listen to '.$clientname);
8140: # ------------------------------------------------------------ Process requests
8141: my $keep_going = 1;
8142: my $user_input;
8143:
8144: while(($user_input = get_request) && $keep_going) {
8145: alarm(120);
8146: Debug("Main: Got $user_input\n");
8147: $keep_going = &process_request($user_input);
8148: alarm(0);
8149: &status('Listening to '.$clientname." ($keymode)");
8150: }
8151:
8152: # --------------------------------------------- client unknown or fishy, refuse
8153: } else {
8154: print $client "refused\n";
8155: $client->close();
8156: &logthis("<font color='blue'>WARNING: "
8157: ."Rejected client $clientip, closing connection</font>");
8158: }
8159: }
8160:
8161: # =============================================================================
8162:
8163: &logthis("<font color='red'>CRITICAL: "
8164: ."Disconnect from $clientip ($clientname)</font>");
8165:
8166:
8167: # this exit is VERY important, otherwise the child will become
8168: # a producer of more and more children, forking yourself into
8169: # process death.
8170: exit;
8171:
8172: }
8173:
8174: #
8175: # Used to determine if a particular client is from the same domain
8176: # as the current server, or from the same internet domain, and
8177: # also if the client can host sessions for the domain's users.
8178: # A hash is populated with keys set to commands sent by the client
8179: # which may not be executed for this domain.
8180: #
8181: # Optional input -- the client to check for domain and internet domain.
8182: # If not specified, defaults to the package variable: $clientname
8183: #
8184: # If called in array context will not set package variables, but will
8185: # instead return an array of two values - (a) true if client is in the
8186: # same domain as the server, and (b) true if client is in the same
8187: # internet domain.
8188: #
8189: # If called in scalar context, sets package variables for current client:
8190: #
8191: # $clienthomedom - LonCAPA domain of homeID for client.
8192: # $clientsamedom - LonCAPA domain same for this host and client.
8193: # $clientintdom - LonCAPA "internet domain" for client.
8194: # $clientsameinst - LonCAPA "internet domain" same for this host & client.
8195: # $clientremoteok - If current domain permits hosting on this client: 1
8196: # %clientprohibited - Commands prohibited for domain's users for this client.
8197: #
8198: # if the host and client have the same "internet domain", then the value
8199: # of $clientremoteok is not used, and no commands are prohibited.
8200: #
8201: # returns 1 to indicate package variables have been set for current client.
8202: #
8203:
8204: sub set_client_info {
8205: my ($lonhost) = @_;
8206: $lonhost ||= $clientname;
8207: my $clienthost = &Apache::lonnet::hostname($lonhost);
8208: my $clientserverhomeID = &Apache::lonnet::get_server_homeID($clienthost);
8209: my $homedom = &Apache::lonnet::host_domain($clientserverhomeID);
8210: my $samedom = 0;
8211: if ($perlvar{'lonDefDomain'} eq $homedom) {
8212: $samedom = 1;
8213: }
8214: my $intdom = &Apache::lonnet::internet_dom($clientserverhomeID);
8215: my $sameinst = 0;
8216: if ($intdom ne '') {
8217: my $internet_names = &Apache::lonnet::get_internet_names($currenthostid);
8218: if (ref($internet_names) eq 'ARRAY') {
8219: if (grep(/^\Q$intdom\E$/,@{$internet_names})) {
8220: $sameinst = 1;
8221: }
8222: }
8223: }
8224: if (wantarray) {
8225: return ($samedom,$sameinst);
8226: } else {
8227: $clienthomedom = $homedom;
8228: $clientsamedom = $samedom;
8229: $clientintdom = $intdom;
8230: $clientsameinst = $sameinst;
8231: if ($clientsameinst) {
8232: undef($clientremoteok);
8233: undef(%clientprohibited);
8234: } else {
8235: $clientremoteok = &get_remote_hostable($currentdomainid);
8236: %clientprohibited = &get_prohibited($currentdomainid);
8237: }
8238: return 1;
8239: }
8240: }
8241:
8242: #
8243: # Determine if a user is an author for the indicated domain.
8244: #
8245: # Parameters:
8246: # domain - domain to check in .
8247: # user - Name of user to check.
8248: #
8249: # Return:
8250: # 1 - User is an author for domain.
8251: # 0 - User is not an author for domain.
8252: sub is_author {
8253: my ($domain, $user) = @_;
8254:
8255: &Debug("is_author: $user @ $domain");
8256:
8257: my $hashref = &tie_user_hash($domain, $user, "roles",
8258: &GDBM_READER());
8259:
8260: # Author role should show up as a key /domain/_au
8261:
8262: my $value;
8263: if ($hashref) {
8264:
8265: my $key = "/$domain/_au";
8266: if (defined($hashref)) {
8267: $value = $hashref->{$key};
8268: if(!untie_user_hash($hashref)) {
8269: return 'error: ' . ($!+0)." untie (GDBM) Failed";
8270: }
8271: }
8272:
8273: if(defined($value)) {
8274: &Debug("$user @ $domain is an author");
8275: }
8276: } else {
8277: return 'error: '.($!+0)." tie (GDBM) Failed";
8278: }
8279:
8280: return defined($value);
8281: }
8282: #
8283: # Checks to see if the input roleput request was to set
8284: # an author role. If so, creates construction space
8285: # Parameters:
8286: # request - The request sent to the rolesput subchunk.
8287: # We're looking for /domain/_au
8288: # domain - The domain in which the user is having roles doctored.
8289: # user - Name of the user for which the role is being put.
8290: # authtype - The authentication type associated with the user.
8291: #
8292: sub manage_permissions {
8293: my ($request, $domain, $user, $authtype) = @_;
8294: # See if the request is of the form /$domain/_au
8295: if($request =~ /^(\/\Q$domain\E\/_au)$/) { # It's an author rolesput...
8296: my $path=$perlvar{'lonDocRoot'}."/priv/$domain";
8297: unless (-e $path) {
8298: mkdir($path);
8299: }
8300: unless (-e $path.'/'.$user) {
8301: mkdir($path.'/'.$user);
8302: }
8303: }
8304: }
8305:
8306:
8307: #
8308: # Return the full path of a user password file, whether it exists or not.
8309: # Parameters:
8310: # domain - Domain in which the password file lives.
8311: # user - name of the user.
8312: # Returns:
8313: # Full passwd path:
8314: #
8315: sub password_path {
8316: my ($domain, $user) = @_;
8317: return &propath($domain, $user).'/passwd';
8318: }
8319:
8320: # Password Filename
8321: # Returns the path to a passwd file given domain and user... only if
8322: # it exists.
8323: # Parameters:
8324: # domain - Domain in which to search.
8325: # user - username.
8326: # Returns:
8327: # - If the password file exists returns its path.
8328: # - If the password file does not exist, returns undefined.
8329: #
8330: sub password_filename {
8331: my ($domain, $user) = @_;
8332:
8333: Debug ("PasswordFilename called: dom = $domain user = $user");
8334:
8335: my $path = &password_path($domain, $user);
8336: Debug("PasswordFilename got path: $path");
8337: if(-e $path) {
8338: return $path;
8339: } else {
8340: return undef;
8341: }
8342: }
8343:
8344: #
8345: # Rewrite the contents of the user's passwd file.
8346: # Parameters:
8347: # domain - domain of the user.
8348: # name - User's name.
8349: # contents - New contents of the file.
8350: # saveold - (optional). If true save old file in a passwd.bak file.
8351: # Returns:
8352: # 0 - Failed.
8353: # 1 - Success.
8354: #
8355: sub rewrite_password_file {
8356: my ($domain, $user, $contents, $saveold) = @_;
8357:
8358: my $file = &password_filename($domain, $user);
8359: if (defined $file) {
8360: if ($saveold) {
8361: my $bakfile = $file.'.bak';
8362: if (CopyFile($file,$bakfile)) {
8363: chmod(0400,$bakfile);
8364: &logthis("Old password saved in passwd.bak for internally authenticated user: $user:$domain");
8365: } else {
8366: &logthis("Failed to save old password in passwd.bak for internally authenticated user: $user:$domain");
8367: }
8368: }
8369: my $pf = IO::File->new(">$file");
8370: if($pf) {
8371: print $pf "$contents\n";
8372: return 1;
8373: } else {
8374: return 0;
8375: }
8376: } else {
8377: return 0;
8378: }
8379:
8380: }
8381:
8382: #
8383: # get_auth_type - Determines the authorization type of a user in a domain.
8384:
8385: # Returns the authorization type or nouser if there is no such user.
8386: #
8387: sub get_auth_type {
8388: my ($domain, $user) = @_;
8389:
8390: Debug("get_auth_type( $domain, $user ) \n");
8391: my $proname = &propath($domain, $user);
8392: my $passwdfile = "$proname/passwd";
8393: if( -e $passwdfile ) {
8394: my $pf = IO::File->new($passwdfile);
8395: my $realpassword = <$pf>;
8396: chomp($realpassword);
8397: Debug("Password info = $realpassword\n");
8398: my ($authtype, $contentpwd) = split(/:/, $realpassword);
8399: Debug("Authtype = $authtype, content = $contentpwd\n");
8400: return "$authtype:$contentpwd";
8401: } else {
8402: Debug("Returning nouser");
8403: return "nouser";
8404: }
8405: }
8406:
8407: #
8408: # Validate a user given their domain, name and password. This utility
8409: # function is used by both AuthenticateHandler and ChangePasswordHandler
8410: # to validate the login credentials of a user.
8411: # Parameters:
8412: # $domain - The domain being logged into (this is required due to
8413: # the capability for multihomed systems.
8414: # $user - The name of the user being validated.
8415: # $password - The user's propoposed password.
8416: #
8417: # Returns:
8418: # 1 - The domain,user,pasword triplet corresponds to a valid
8419: # user.
8420: # 0 - The domain,user,password triplet is not a valid user.
8421: #
8422: sub validate_user {
8423: my ($domain, $user, $password, $checkdefauth) = @_;
8424:
8425: # Why negative ~pi you may well ask? Well this function is about
8426: # authentication, and therefore very important to get right.
8427: # I've initialized the flag that determines whether or not I've
8428: # validated correctly to a value it's not supposed to get.
8429: # At the end of this function. I'll ensure that it's not still that
8430: # value so we don't just wind up returning some accidental value
8431: # as a result of executing an unforseen code path that
8432: # did not set $validated. At the end of valid execution paths,
8433: # validated shoule be 1 for success or 0 for failuer.
8434:
8435: my $validated = -3.14159;
8436:
8437: # How we authenticate is determined by the type of authentication
8438: # the user has been assigned. If the authentication type is
8439: # "nouser", the user does not exist so we will return 0.
8440:
8441: my $contents = &get_auth_type($domain, $user);
8442: my ($howpwd, $contentpwd) = split(/:/, $contents);
8443:
8444: my $null = pack("C",0); # Used by kerberos auth types.
8445:
8446: if ($howpwd eq 'nouser') {
8447: if ($checkdefauth) {
8448: my %domdefaults = &Apache::lonnet::get_domain_defaults($domain);
8449: if ($domdefaults{'auth_def'} eq 'localauth') {
8450: $howpwd = $domdefaults{'auth_def'};
8451: $contentpwd = $domdefaults{'auth_arg_def'};
8452: } elsif ((($domdefaults{'auth_def'} eq 'krb4') ||
8453: ($domdefaults{'auth_def'} eq 'krb5')) &&
8454: ($domdefaults{'auth_arg_def'} ne '')) {
8455: #
8456: # Don't attempt authentication for username and password supplied
8457: # for user without an account if uername contains @ to avoid
8458: # call to &Authen::Krb5::parse_name() which will result in con_lost
8459: #
8460: unless ($user =~ /\@/) {
8461: $howpwd = $domdefaults{'auth_def'};
8462: $contentpwd = $domdefaults{'auth_arg_def'};
8463: }
8464: }
8465: }
8466: }
8467: if ($howpwd ne 'nouser') {
8468: if($howpwd eq "internal") { # Encrypted is in local password file.
8469: if (length($contentpwd) == 13) {
8470: $validated = (crypt($password,$contentpwd) eq $contentpwd);
8471: if ($validated) {
8472: my %domdefaults = &Apache::lonnet::get_domain_defaults($domain);
8473: if ($domdefaults{'intauth_switch'}) {
8474: my $ncpass = &hash_passwd($domain,$password);
8475: my $saveold;
8476: if ($domdefaults{'intauth_switch'} == 2) {
8477: $saveold = 1;
8478: }
8479: if (&rewrite_password_file($domain,$user,"$howpwd:$ncpass",$saveold)) {
8480: &update_passwd_history($user,$domain,$howpwd,'conversion');
8481: &logthis("Validated password hashed with bcrypt for $user:$domain");
8482: }
8483: }
8484: }
8485: } else {
8486: $validated = &check_internal_passwd($password,$contentpwd,$domain,$user);
8487: }
8488: }
8489: elsif ($howpwd eq "unix") { # User is a normal unix user.
8490: $contentpwd = (getpwnam($user))[1];
8491: if($contentpwd) {
8492: if($contentpwd eq 'x') { # Shadow password file...
8493: my $pwauth_path = "/usr/local/sbin/pwauth";
8494: open PWAUTH, "|$pwauth_path" or
8495: die "Cannot invoke authentication";
8496: print PWAUTH "$user\n$password\n";
8497: close PWAUTH;
8498: $validated = ! $?;
8499:
8500: } else { # Passwords in /etc/passwd.
8501: $validated = (crypt($password,
8502: $contentpwd) eq $contentpwd);
8503: }
8504: } else {
8505: $validated = 0;
8506: }
8507: } elsif ($howpwd eq "krb4") { # user is in kerberos 4 auth. domain.
8508: my $checkwithkrb5 = 0;
8509: if ($dist =~/^fedora(\d+)$/) {
8510: if ($1 > 11) {
8511: $checkwithkrb5 = 1;
8512: }
8513: } elsif ($dist =~ /^suse([\d.]+)$/) {
8514: if ($1 > 11.1) {
8515: $checkwithkrb5 = 1;
8516: }
8517: }
8518: if ($checkwithkrb5) {
8519: $validated = &krb5_authen($password,$null,$user,$contentpwd);
8520: } else {
8521: $validated = &krb4_authen($password,$null,$user,$contentpwd);
8522: }
8523: } elsif ($howpwd eq "krb5") { # User is in kerberos 5 auth. domain.
8524: $validated = &krb5_authen($password,$null,$user,$contentpwd);
8525: } elsif ($howpwd eq "localauth") {
8526: # Authenticate via installation specific authentcation method:
8527: $validated = &localauth::localauth($user,
8528: $password,
8529: $contentpwd,
8530: $domain);
8531: if ($validated < 0) {
8532: &logthis("localauth for $contentpwd $user:$domain returned a $validated");
8533: $validated = 0;
8534: }
8535: } else { # Unrecognized auth is also bad.
8536: $validated = 0;
8537: }
8538: } else {
8539: $validated = 0;
8540: }
8541: #
8542: # $validated has the correct stat of the authentication:
8543: #
8544:
8545: unless ($validated != -3.14159) {
8546: # I >really really< want to know if this happens.
8547: # since it indicates that user authentication is badly
8548: # broken in some code path.
8549: #
8550: die "ValidateUser - failed to set the value of validated $domain, $user $password";
8551: }
8552: return $validated;
8553: }
8554:
8555: sub check_internal_passwd {
8556: my ($plainpass,$stored,$domain,$user) = @_;
8557: my (undef,$method,@rest) = split(/!/,$stored);
8558: if ($method eq 'bcrypt') {
8559: my $result = &hash_passwd($domain,$plainpass,@rest);
8560: if ($result ne $stored) {
8561: return 0;
8562: }
8563: my %domdefaults = &Apache::lonnet::get_domain_defaults($domain);
8564: if ($domdefaults{'intauth_check'}) {
8565: # Upgrade to a larger number of rounds if necessary
8566: my $defaultcost = $domdefaults{'intauth_cost'};
8567: if (($defaultcost eq '') || ($defaultcost =~ /D/)) {
8568: $defaultcost = 10;
8569: }
8570: if (int($rest[0])<int($defaultcost)) {
8571: if ($domdefaults{'intauth_check'} == 1) {
8572: my $ncpass = &hash_passwd($domain,$plainpass);
8573: if (&rewrite_password_file($domain,$user,"internal:$ncpass")) {
8574: &update_passwd_history($user,$domain,'internal','update cost');
8575: &logthis("Validated password hashed with bcrypt for $user:$domain");
8576: }
8577: return 1;
8578: } elsif ($domdefaults{'intauth_check'} == 2) {
8579: return 0;
8580: }
8581: }
8582: } else {
8583: return 1;
8584: }
8585: }
8586: return 0;
8587: }
8588:
8589: sub get_last_authchg {
8590: my ($domain,$user) = @_;
8591: my $lastmod;
8592: my $logname = &propath($domain,$user).'/passwd.log';
8593: if (-e "$logname") {
8594: $lastmod = (stat("$logname"))[9];
8595: }
8596: return $lastmod;
8597: }
8598:
8599: sub krb4_authen {
8600: my ($password,$null,$user,$contentpwd) = @_;
8601: my $validated = 0;
8602: if (!($password =~ /$null/) ) { # Null password not allowed.
8603: eval {
8604: require Authen::Krb4;
8605: };
8606: if (!$@) {
8607: my $k4error = &Authen::Krb4::get_pw_in_tkt($user,
8608: "",
8609: $contentpwd,,
8610: 'krbtgt',
8611: $contentpwd,
8612: 1,
8613: $password);
8614: if(!$k4error) {
8615: $validated = 1;
8616: } else {
8617: $validated = 0;
8618: &logthis('krb4: '.$user.', '.$contentpwd.', '.
8619: &Authen::Krb4::get_err_txt($Authen::Krb4::error));
8620: }
8621: } else {
8622: $validated = krb5_authen($password,$null,$user,$contentpwd);
8623: }
8624: }
8625: return $validated;
8626: }
8627:
8628: sub krb5_authen {
8629: my ($password,$null,$user,$contentpwd) = @_;
8630: my $validated = 0;
8631: if(!($password =~ /$null/)) { # Null password not allowed.
8632: my $krbclient = &Authen::Krb5::parse_name($user.'@'
8633: .$contentpwd);
8634: my $krbservice = "krbtgt/".$contentpwd."\@".$contentpwd;
8635: my $krbserver = &Authen::Krb5::parse_name($krbservice);
8636: my $credentials= &Authen::Krb5::cc_default();
8637: $credentials->initialize(&Authen::Krb5::parse_name($user.'@'
8638: .$contentpwd));
8639: my $krbreturn;
8640: if (exists(&Authen::Krb5::get_init_creds_password)) {
8641: $krbreturn =
8642: &Authen::Krb5::get_init_creds_password($krbclient,$password,
8643: $krbservice);
8644: $validated = (ref($krbreturn) eq 'Authen::Krb5::Creds');
8645: } else {
8646: $krbreturn =
8647: &Authen::Krb5::get_in_tkt_with_password($krbclient,$krbserver,
8648: $password,$credentials);
8649: $validated = ($krbreturn == 1);
8650: }
8651: if (!$validated) {
8652: &logthis('krb5: '.$user.', '.$contentpwd.', '.
8653: &Authen::Krb5::error());
8654: }
8655: }
8656: return $validated;
8657: }
8658:
8659: sub addline {
8660: my ($fname,$hostid,$ip,$newline)=@_;
8661: my $contents;
8662: my $found=0;
8663: my $expr='^'.quotemeta($hostid).':'.quotemeta($ip).':';
8664: my $sh;
8665: if ($sh=IO::File->new("$fname.subscription")) {
8666: while (my $subline=<$sh>) {
8667: if ($subline !~ /$expr/) {$contents.= $subline;} else {$found=1;}
8668: }
8669: $sh->close();
8670: }
8671: $sh=IO::File->new(">$fname.subscription");
8672: if ($contents) { print $sh $contents; }
8673: if ($newline) { print $sh $newline; }
8674: $sh->close();
8675: return $found;
8676: }
8677:
8678: sub get_chat {
8679: my ($cdom,$cname,$udom,$uname,$group)=@_;
8680:
8681: my @entries=();
8682: my $namespace = 'nohist_chatroom';
8683: my $namespace_inroom = 'nohist_inchatroom';
8684: if ($group ne '') {
8685: $namespace .= '_'.$group;
8686: $namespace_inroom .= '_'.$group;
8687: }
8688: my $hashref = &tie_user_hash($cdom, $cname, $namespace,
8689: &GDBM_READER());
8690: if ($hashref) {
8691: @entries=map { $_.':'.$hashref->{$_} } sort(keys(%$hashref));
8692: &untie_user_hash($hashref);
8693: }
8694: my @participants=();
8695: my $cutoff=time-60;
8696: $hashref = &tie_user_hash($cdom, $cname, $namespace_inroom,
8697: &GDBM_WRCREAT());
8698: if ($hashref) {
8699: $hashref->{$uname.':'.$udom}=time;
8700: foreach my $user (sort(keys(%$hashref))) {
8701: if ($hashref->{$user}>$cutoff) {
8702: push(@participants, 'active_participant:'.$user);
8703: }
8704: }
8705: &untie_user_hash($hashref);
8706: }
8707: return (@participants,@entries);
8708: }
8709:
8710: sub chat_add {
8711: my ($cdom,$cname,$newchat,$group)=@_;
8712: my @entries=();
8713: my $time=time;
8714: my $namespace = 'nohist_chatroom';
8715: my $logfile = 'chatroom.log';
8716: if ($group ne '') {
8717: $namespace .= '_'.$group;
8718: $logfile = 'chatroom_'.$group.'.log';
8719: }
8720: my $hashref = &tie_user_hash($cdom, $cname, $namespace,
8721: &GDBM_WRCREAT());
8722: if ($hashref) {
8723: @entries=map { $_.':'.$hashref->{$_} } sort(keys(%$hashref));
8724: my ($lastid)=($entries[$#entries]=~/^(\w+)\:/);
8725: my ($thentime,$idnum)=split(/\_/,$lastid);
8726: my $newid=$time.'_000000';
8727: if ($thentime==$time) {
8728: $idnum=~s/^0+//;
8729: $idnum++;
8730: $idnum=substr('000000'.$idnum,-6,6);
8731: $newid=$time.'_'.$idnum;
8732: }
8733: $hashref->{$newid}=$newchat;
8734: my $expired=$time-3600;
8735: foreach my $comment (keys(%$hashref)) {
8736: my ($thistime) = ($comment=~/(\d+)\_/);
8737: if ($thistime<$expired) {
8738: delete $hashref->{$comment};
8739: }
8740: }
8741: {
8742: my $proname=&propath($cdom,$cname);
8743: if (open(CHATLOG,">>$proname/$logfile")) {
8744: print CHATLOG ("$time:".&unescape($newchat)."\n");
8745: }
8746: close(CHATLOG);
8747: }
8748: &untie_user_hash($hashref);
8749: }
8750: }
8751:
8752: sub unsub {
8753: my ($fname,$clientip)=@_;
8754: my $result;
8755: my $unsubs = 0; # Number of successful unsubscribes:
8756:
8757:
8758: # An old way subscriptions were handled was to have a
8759: # subscription marker file:
8760:
8761: Debug("Attempting unlink of $fname.$clientname");
8762: if (unlink("$fname.$clientname")) {
8763: $unsubs++; # Successful unsub via marker file.
8764: }
8765:
8766: # The more modern way to do it is to have a subscription list
8767: # file:
8768:
8769: if (-e "$fname.subscription") {
8770: my $found=&addline($fname,$clientname,$clientip,'');
8771: if ($found) {
8772: $unsubs++;
8773: }
8774: }
8775:
8776: # If either or both of these mechanisms succeeded in unsubscribing a
8777: # resource we can return ok:
8778:
8779: if($unsubs) {
8780: $result = "ok\n";
8781: } else {
8782: $result = "not_subscribed\n";
8783: }
8784:
8785: return $result;
8786: }
8787:
8788: sub currentversion {
8789: my $fname=shift;
8790: my $version=-1;
8791: my $ulsdir='';
8792: if ($fname=~/^(.+)\/[^\/]+$/) {
8793: $ulsdir=$1;
8794: }
8795: my ($fnamere1,$fnamere2);
8796: # remove version if already specified
8797: $fname=~s/\.\d+\.(\w+(?:\.meta)*)$/\.$1/;
8798: # get the bits that go before and after the version number
8799: if ( $fname=~/^(.*\.)(\w+(?:\.meta)*)$/ ) {
8800: $fnamere1=$1;
8801: $fnamere2='.'.$2;
8802: }
8803: if (-e $fname) { $version=1; }
8804: if (-e $ulsdir) {
8805: if(-d $ulsdir) {
8806: if (opendir(LSDIR,$ulsdir)) {
8807: my $ulsfn;
8808: while ($ulsfn=readdir(LSDIR)) {
8809: # see if this is a regular file (ignore links produced earlier)
8810: my $thisfile=$ulsdir.'/'.$ulsfn;
8811: unless (-l $thisfile) {
8812: if ($thisfile=~/\Q$fnamere1\E(\d+)\Q$fnamere2\E$/) {
8813: if ($1>$version) { $version=$1; }
8814: }
8815: }
8816: }
8817: closedir(LSDIR);
8818: $version++;
8819: }
8820: }
8821: }
8822: return $version;
8823: }
8824:
8825: sub thisversion {
8826: my $fname=shift;
8827: my $version=-1;
8828: if ($fname=~/\.(\d+)\.\w+(?:\.meta)*$/) {
8829: $version=$1;
8830: }
8831: return $version;
8832: }
8833:
8834: sub subscribe {
8835: my ($userinput,$clientip)=@_;
8836: my $result;
8837: my ($cmd,$fname)=split(/:/,$userinput,2);
8838: my $ownership=&ishome($fname);
8839: if ($ownership eq 'owner') {
8840: # explitly asking for the current version?
8841: unless (-e $fname) {
8842: my $currentversion=¤tversion($fname);
8843: if (&thisversion($fname)==$currentversion) {
8844: if ($fname=~/^(.+)\.\d+\.(\w+(?:\.meta)*)$/) {
8845: my $root=$1;
8846: my $extension=$2;
8847: symlink($root.'.'.$extension,
8848: $root.'.'.$currentversion.'.'.$extension);
8849: unless ($extension=~/\.meta$/) {
8850: symlink($root.'.'.$extension.'.meta',
8851: $root.'.'.$currentversion.'.'.$extension.'.meta');
8852: }
8853: }
8854: }
8855: }
8856: if (-e $fname) {
8857: if (-d $fname) {
8858: $result="directory\n";
8859: } else {
8860: if (-e "$fname.$clientname") {&unsub($fname,$clientip);}
8861: my $now=time;
8862: my $found=&addline($fname,$clientname,$clientip,
8863: "$clientname:$clientip:$now\n");
8864: if ($found) { $result="$fname\n"; }
8865: # if they were subscribed to only meta data, delete that
8866: # subscription, when you subscribe to a file you also get
8867: # the metadata
8868: unless ($fname=~/\.meta$/) { &unsub("$fname.meta",$clientip); }
8869: $fname=~s/\/home\/httpd\/html\/res/raw/;
8870: my $protocol = $Apache::lonnet::protocol{$perlvar{'lonHostID'}};
8871: $protocol = 'http' if ($protocol ne 'https');
8872: $fname=$protocol.'://'.&Apache::lonnet::hostname($perlvar{'lonHostID'})."/".$fname;
8873: $result="$fname\n";
8874: }
8875: } else {
8876: $result="not_found\n";
8877: }
8878: } else {
8879: $result="rejected\n";
8880: }
8881: return $result;
8882: }
8883: # Change the passwd of a unix user. The caller must have
8884: # first verified that the user is a loncapa user.
8885: #
8886: # Parameters:
8887: # user - Unix user name to change.
8888: # pass - New password for the user.
8889: # Returns:
8890: # ok - if success
8891: # other - Some meaningfule error message string.
8892: # NOTE:
8893: # invokes a setuid script to change the passwd.
8894: sub change_unix_password {
8895: my ($user, $pass) = @_;
8896:
8897: &Debug("change_unix_password");
8898: my $execdir=$perlvar{'lonDaemons'};
8899: &Debug("Opening lcpasswd pipeline");
8900: my $pf = IO::File->new("|$execdir/lcpasswd > "
8901: ."$perlvar{'lonDaemons'}"
8902: ."/logs/lcpasswd.log");
8903: print $pf "$user\n$pass\n$pass\n";
8904: close $pf;
8905: my $err = $?;
8906: return ($err < @passwderrors) ? $passwderrors[$err] :
8907: "pwchange_falure - unknown error";
8908:
8909:
8910: }
8911:
8912:
8913: sub make_passwd_file {
8914: my ($uname,$udom,$umode,$npass,$passfilename,$action)=@_;
8915: my $result="ok";
8916: if ($umode eq 'krb4' or $umode eq 'krb5') {
8917: {
8918: my $pf = IO::File->new(">$passfilename");
8919: if ($pf) {
8920: print $pf "$umode:$npass\n";
8921: &update_passwd_history($uname,$udom,$umode,$action);
8922: } else {
8923: $result = "pass_file_failed_error";
8924: }
8925: }
8926: } elsif ($umode eq 'internal') {
8927: my $ncpass = &hash_passwd($udom,$npass);
8928: {
8929: &Debug("Creating internal auth");
8930: my $pf = IO::File->new(">$passfilename");
8931: if($pf) {
8932: print $pf "internal:$ncpass\n";
8933: &update_passwd_history($uname,$udom,$umode,$action);
8934: } else {
8935: $result = "pass_file_failed_error";
8936: }
8937: }
8938: } elsif ($umode eq 'localauth') {
8939: {
8940: my $pf = IO::File->new(">$passfilename");
8941: if($pf) {
8942: print $pf "localauth:$npass\n";
8943: &update_passwd_history($uname,$udom,$umode,$action);
8944: } else {
8945: $result = "pass_file_failed_error";
8946: }
8947: }
8948: } elsif ($umode eq 'unix') {
8949: &logthis(">>>Attempt to create unix account blocked -- unix auth not available for new users.");
8950: $result="no_new_unix_accounts";
8951: } elsif ($umode eq 'none') {
8952: {
8953: my $pf = IO::File->new("> $passfilename");
8954: if($pf) {
8955: print $pf "none:\n";
8956: } else {
8957: $result = "pass_file_failed_error";
8958: }
8959: }
8960: } elsif ($umode eq 'lti') {
8961: my $pf = IO::File->new(">$passfilename");
8962: if($pf) {
8963: print $pf "lti:\n";
8964: &update_passwd_history($uname,$udom,$umode,$action);
8965: } else {
8966: $result = "pass_file_failed_error";
8967: }
8968: } else {
8969: $result="auth_mode_error";
8970: }
8971: return $result;
8972: }
8973:
8974: sub convert_photo {
8975: my ($start,$dest)=@_;
8976: system("convert $start $dest");
8977: }
8978:
8979: sub sethost {
8980: my ($remotereq) = @_;
8981: my (undef,$hostid)=split(/:/,$remotereq);
8982: # ignore sethost if we are already correct
8983: if ($hostid eq $currenthostid) {
8984: return 'ok';
8985: }
8986:
8987: if (!defined($hostid)) { $hostid=$perlvar{'lonHostID'}; }
8988: if (&Apache::lonnet::get_host_ip($perlvar{'lonHostID'})
8989: eq &Apache::lonnet::get_host_ip($hostid)) {
8990: $currenthostid =$hostid;
8991: $currentdomainid=&Apache::lonnet::host_domain($hostid);
8992: &set_client_info();
8993: # &logthis("Setting hostid to $hostid, and domain to $currentdomainid");
8994: } else {
8995: &logthis("Requested host id $hostid not an alias of ".
8996: $perlvar{'lonHostID'}." refusing connection");
8997: return 'unable_to_set';
8998: }
8999: return 'ok';
9000: }
9001:
9002: sub version {
9003: my ($userinput)=@_;
9004: $remoteVERSION=(split(/:/,$userinput))[1];
9005: return "version:$VERSION";
9006: }
9007:
9008: sub get_usersession_config {
9009: my ($dom,$name) = @_;
9010: my ($usersessionconf,$cached)=&Apache::lonnet::is_cached_new($name,$dom);
9011: if (defined($cached)) {
9012: return $usersessionconf;
9013: } else {
9014: my %domconfig = &Apache::lonnet::get_dom('configuration',['usersessions'],$dom);
9015: &Apache::lonnet::do_cache_new($name,$dom,$domconfig{'usersessions'},3600);
9016: return $domconfig{'usersessions'};
9017: }
9018: return;
9019: }
9020:
9021: sub get_usersearch_config {
9022: my ($dom,$name) = @_;
9023: my ($usersearchconf,$cached)=&Apache::lonnet::is_cached_new($name,$dom);
9024: if (defined($cached)) {
9025: return $usersearchconf;
9026: } else {
9027: my %domconfig = &Apache::lonnet::get_dom('configuration',['directorysrch'],$dom);
9028: &Apache::lonnet::do_cache_new($name,$dom,$domconfig{'directorysrch'},600);
9029: return $domconfig{'directorysrch'};
9030: }
9031: return;
9032: }
9033:
9034: sub get_prohibited {
9035: my ($dom) = @_;
9036: my $name = 'trust';
9037: my ($trustconfig,$cached)=&Apache::lonnet::is_cached_new($name,$dom);
9038: unless (defined($cached)) {
9039: my %domconfig = &Apache::lonnet::get_dom('configuration',['trust'],$dom);
9040: &Apache::lonnet::do_cache_new($name,$dom,$domconfig{'trust'},3600);
9041: $trustconfig = $domconfig{'trust'};
9042: }
9043: my %prohibited;
9044: if (ref($trustconfig)) {
9045: foreach my $prefix (keys(%{$trustconfig})) {
9046: if (ref($trustconfig->{$prefix}) eq 'HASH') {
9047: my $reject;
9048: if (ref($trustconfig->{$prefix}->{'exc'}) eq 'ARRAY') {
9049: if (grep(/^\Q$clientintdom\E$/,@{$trustconfig->{$prefix}->{'exc'}})) {
9050: $reject = 1;
9051: }
9052: }
9053: if (ref($trustconfig->{$prefix}->{'inc'}) eq 'ARRAY') {
9054: if (grep(/^\Q$clientintdom\E$/,@{$trustconfig->{$prefix}->{'inc'}})) {
9055: $reject = 0;
9056: } else {
9057: $reject = 1;
9058: }
9059: }
9060: if ($reject) {
9061: $prohibited{$prefix} = 1;
9062: }
9063: }
9064: }
9065: }
9066: return %prohibited;
9067: }
9068:
9069: sub get_remote_hostable {
9070: my ($dom) = @_;
9071: my $result;
9072: if ($clientintdom) {
9073: $result = 1;
9074: my $remsessconf = &get_usersession_config($dom,'remotesession');
9075: if (ref($remsessconf) eq 'HASH') {
9076: if (ref($remsessconf->{'remote'}) eq 'HASH') {
9077: if (ref($remsessconf->{'remote'}->{'excludedomain'}) eq 'ARRAY') {
9078: if (grep(/^\Q$clientintdom\E$/,@{$remsessconf->{'remote'}->{'excludedomain'}})) {
9079: $result = 0;
9080: }
9081: }
9082: if (ref($remsessconf->{'remote'}->{'includedomain'}) eq 'ARRAY') {
9083: if (grep(/^\Q$clientintdom\E$/,@{$remsessconf->{'remote'}->{'includedomain'}})) {
9084: $result = 1;
9085: } else {
9086: $result = 0;
9087: }
9088: }
9089: }
9090: }
9091: }
9092: return $result;
9093: }
9094:
9095: sub distro_and_arch {
9096: return $dist.':'.$arch;
9097: }
9098:
9099: # ----------------------------------- POD (plain old documentation, CPAN style)
9100:
9101: =head1 NAME
9102:
9103: lond - "LON Daemon" Server (port "LOND" 5663)
9104:
9105: =head1 SYNOPSIS
9106:
9107: Usage: B<lond>
9108:
9109: Should only be run as user=www. This is a command-line script which
9110: is invoked by B<loncron>. There is no expectation that a typical user
9111: will manually start B<lond> from the command-line. (In other words,
9112: DO NOT START B<lond> YOURSELF.)
9113:
9114: =head1 DESCRIPTION
9115:
9116: There are two characteristics associated with the running of B<lond>,
9117: PROCESS MANAGEMENT (starting, stopping, handling child processes)
9118: and SERVER-SIDE ACTIVITIES (password authentication, user creation,
9119: subscriptions, etc). These are described in two large
9120: sections below.
9121:
9122: B<PROCESS MANAGEMENT>
9123:
9124: Preforker - server who forks first. Runs as a daemon. HUPs.
9125: Uses IDEA encryption
9126:
9127: B<lond> forks off children processes that correspond to the other servers
9128: in the network. Management of these processes can be done at the
9129: parent process level or the child process level.
9130:
9131: B<logs/lond.log> is the location of log messages.
9132:
9133: The process management is now explained in terms of linux shell commands,
9134: subroutines internal to this code, and signal assignments:
9135:
9136: =over 4
9137:
9138: =item *
9139:
9140: PID is stored in B<logs/lond.pid>
9141:
9142: This is the process id number of the parent B<lond> process.
9143:
9144: =item *
9145:
9146: SIGTERM and SIGINT
9147:
9148: Parent signal assignment:
9149: $SIG{INT} = $SIG{TERM} = \&HUNTSMAN;
9150:
9151: Child signal assignment:
9152: $SIG{INT} = 'DEFAULT'; (and SIGTERM is DEFAULT also)
9153: (The child dies and a SIGALRM is sent to parent, awaking parent from slumber
9154: to restart a new child.)
9155:
9156: Command-line invocations:
9157: B<kill> B<-s> SIGTERM I<PID>
9158: B<kill> B<-s> SIGINT I<PID>
9159:
9160: Subroutine B<HUNTSMAN>:
9161: This is only invoked for the B<lond> parent I<PID>.
9162: This kills all the children, and then the parent.
9163: The B<lonc.pid> file is cleared.
9164:
9165: =item *
9166:
9167: SIGHUP
9168:
9169: Current bug:
9170: This signal can only be processed the first time
9171: on the parent process. Subsequent SIGHUP signals
9172: have no effect.
9173:
9174: Parent signal assignment:
9175: $SIG{HUP} = \&HUPSMAN;
9176:
9177: Child signal assignment:
9178: none (nothing happens)
9179:
9180: Command-line invocations:
9181: B<kill> B<-s> SIGHUP I<PID>
9182:
9183: Subroutine B<HUPSMAN>:
9184: This is only invoked for the B<lond> parent I<PID>,
9185: This kills all the children, and then the parent.
9186: The B<lond.pid> file is cleared.
9187:
9188: =item *
9189:
9190: SIGUSR1
9191:
9192: Parent signal assignment:
9193: $SIG{USR1} = \&USRMAN;
9194:
9195: Child signal assignment:
9196: $SIG{USR1}= \&logstatus;
9197:
9198: Command-line invocations:
9199: B<kill> B<-s> SIGUSR1 I<PID>
9200:
9201: Subroutine B<USRMAN>:
9202: When invoked for the B<lond> parent I<PID>,
9203: SIGUSR1 is sent to all the children, and the status of
9204: each connection is logged.
9205:
9206: =item *
9207:
9208: SIGUSR2
9209:
9210: Parent Signal assignment:
9211: $SIG{USR2} = \&UpdateHosts
9212:
9213: Child signal assignment:
9214: NONE
9215:
9216:
9217: =item *
9218:
9219: SIGCHLD
9220:
9221: Parent signal assignment:
9222: $SIG{CHLD} = \&REAPER;
9223:
9224: Child signal assignment:
9225: none
9226:
9227: Command-line invocations:
9228: B<kill> B<-s> SIGCHLD I<PID>
9229:
9230: Subroutine B<REAPER>:
9231: This is only invoked for the B<lond> parent I<PID>.
9232: Information pertaining to the child is removed.
9233: The socket port is cleaned up.
9234:
9235: =back
9236:
9237: B<SERVER-SIDE ACTIVITIES>
9238:
9239: Server-side information can be accepted in an encrypted or non-encrypted
9240: method.
9241:
9242: =over 4
9243:
9244: =item ping
9245:
9246: Query a client in the hosts.tab table; "Are you there?"
9247:
9248: =item pong
9249:
9250: Respond to a ping query.
9251:
9252: =item ekey
9253:
9254: Read in encrypted key, make cipher. Respond with a buildkey.
9255:
9256: =item load
9257:
9258: Respond with CPU load based on a computation upon /proc/loadavg.
9259:
9260: =item currentauth
9261:
9262: Reply with current authentication information (only over an
9263: encrypted channel).
9264:
9265: =item auth
9266:
9267: Only over an encrypted channel, reply as to whether a user's
9268: authentication information can be validated.
9269:
9270: =item passwd
9271:
9272: Allow for a password to be set.
9273:
9274: =item makeuser
9275:
9276: Make a user.
9277:
9278: =item changeuserauth
9279:
9280: Allow for authentication mechanism and password to be changed.
9281:
9282: =item home
9283:
9284: Respond to a question "are you the home for a given user?"
9285:
9286: =item update
9287:
9288: Update contents of a subscribed resource.
9289:
9290: =item unsubscribe
9291:
9292: The server is unsubscribing from a resource.
9293:
9294: =item subscribe
9295:
9296: The server is subscribing to a resource.
9297:
9298: =item log
9299:
9300: Place in B<logs/lond.log>
9301:
9302: =item put
9303:
9304: stores hash in namespace
9305:
9306: =item rolesput
9307:
9308: put a role into a user's environment
9309:
9310: =item get
9311:
9312: returns hash with keys from array
9313: reference filled in from namespace
9314:
9315: =item eget
9316:
9317: returns hash with keys from array
9318: reference filled in from namesp (encrypts the return communication)
9319:
9320: =item rolesget
9321:
9322: get a role from a user's environment
9323:
9324: =item del
9325:
9326: deletes keys out of array from namespace
9327:
9328: =item keys
9329:
9330: returns namespace keys
9331:
9332: =item dump
9333:
9334: dumps the complete (or key matching regexp) namespace into a hash
9335:
9336: =item store
9337:
9338: stores hash permanently
9339: for this url; hashref needs to be given and should be a \%hashname; the
9340: remaining args aren't required and if they aren't passed or are '' they will
9341: be derived from the ENV
9342:
9343: =item restore
9344:
9345: returns a hash for a given url
9346:
9347: =item querysend
9348:
9349: Tells client about the lonsql process that has been launched in response
9350: to a sent query.
9351:
9352: =item queryreply
9353:
9354: Accept information from lonsql and make appropriate storage in temporary
9355: file space.
9356:
9357: =item idput
9358:
9359: Defines usernames as corresponding to IDs. (These "IDs" are unique identifiers
9360: for each student, defined perhaps by the institutional Registrar.)
9361:
9362: =item idget
9363:
9364: Returns usernames corresponding to IDs. (These "IDs" are unique identifiers
9365: for each student, defined perhaps by the institutional Registrar.)
9366:
9367: =item iddel
9368:
9369: Deletes one or more ids in a domain's id database.
9370:
9371: =item tmpput
9372:
9373: Accept and store information in temporary space.
9374:
9375: =item tmpget
9376:
9377: Send along temporarily stored information.
9378:
9379: =item ls
9380:
9381: List part of a user's directory.
9382:
9383: =item pushtable
9384:
9385: Pushes a file in /home/httpd/lonTab directory. Currently limited to:
9386: hosts.tab and domain.tab. The old file is copied to *.tab.backup but
9387: must be restored manually in case of a problem with the new table file.
9388: pushtable requires that the request be encrypted and validated via
9389: ValidateManager. The form of the command is:
9390: enc:pushtable tablename <tablecontents> \n
9391: where pushtable, tablename and <tablecontents> will be encrypted, but \n is a
9392: cleartext newline.
9393:
9394: =item Hanging up (exit or init)
9395:
9396: What to do when a client tells the server that they (the client)
9397: are leaving the network.
9398:
9399: =item unknown command
9400:
9401: If B<lond> is sent an unknown command (not in the list above),
9402: it replys to the client "unknown_cmd".
9403:
9404:
9405: =item UNKNOWN CLIENT
9406:
9407: If the anti-spoofing algorithm cannot verify the client,
9408: the client is rejected (with a "refused" message sent
9409: to the client, and the connection is closed.
9410:
9411: =back
9412:
9413: =head1 PREREQUISITES
9414:
9415: IO::Socket
9416: IO::File
9417: Apache::File
9418: POSIX
9419: Crypt::IDEA
9420: GDBM_File
9421: Authen::Krb4
9422: Authen::Krb5
9423:
9424: =head1 COREQUISITES
9425:
9426: none
9427:
9428: =head1 OSNAMES
9429:
9430: linux
9431:
9432: =head1 SCRIPT CATEGORIES
9433:
9434: Server/Process
9435:
9436: =cut
9437:
9438:
9439: =pod
9440:
9441: =head1 LOG MESSAGES
9442:
9443: The messages below can be emitted in the lond log. This log is located
9444: in ~httpd/perl/logs/lond.log Many log messages have HTML encapsulation
9445: to provide coloring if examined from inside a web page. Some do not.
9446: Where color is used, the colors are; Red for sometihhng to get excited
9447: about and to follow up on. Yellow for something to keep an eye on to
9448: be sure it does not get worse, Green,and Blue for informational items.
9449:
9450: In the discussions below, sometimes reference is made to ~httpd
9451: when describing file locations. There isn't really an httpd
9452: user, however there is an httpd directory that gets installed in the
9453: place that user home directories go. On linux, this is usually
9454: (always?) /home/httpd.
9455:
9456:
9457: Some messages are colorless. These are usually (not always)
9458: Green/Blue color level messages.
9459:
9460: =over 2
9461:
9462: =item (Red) LocalConnection rejecting non local: <ip> ne 127.0.0.1
9463:
9464: A local connection negotiation was attempted by
9465: a host whose IP address was not 127.0.0.1.
9466: The socket is closed and the child will exit.
9467: lond has three ways to establish an encyrption
9468: key with a client:
9469:
9470: =over 2
9471:
9472: =item local
9473:
9474: The key is written and read from a file.
9475: This is only valid for connections from localhost.
9476:
9477: =item insecure
9478:
9479: The key is generated by the server and
9480: transmitted to the client.
9481:
9482: =item ssl (secure)
9483:
9484: An ssl connection is negotiated with the client,
9485: the key is generated by the server and sent to the
9486: client across this ssl connection before the
9487: ssl connectionis terminated and clear text
9488: transmission resumes.
9489:
9490: =back
9491:
9492: =item (Red) LocalConnection: caller is insane! init = <init> and type = <type>
9493:
9494: The client is local but has not sent an initialization
9495: string that is the literal "init:local" The connection
9496: is closed and the child exits.
9497:
9498: =item Red CRITICAL Can't get key file <error>
9499:
9500: SSL key negotiation is being attempted but the call to
9501: lonssl::KeyFile failed. This usually means that the
9502: configuration file is not correctly defining or protecting
9503: the directories/files lonCertificateDirectory or
9504: lonnetPrivateKey
9505: <error> is a string that describes the reason that
9506: the key file could not be located.
9507:
9508: =item (Red) CRITICAL Can't get certificates <error>
9509:
9510: SSL key negotiation failed because we were not able to retrives our certificate
9511: or the CA's certificate in the call to lonssl::CertificateFile
9512: <error> is the textual reason this failed. Usual reasons:
9513:
9514: =over 2
9515:
9516: =item Apache config file for loncapa incorrect:
9517:
9518: one of the variables
9519: lonCertificateDirectory, lonnetCertificateAuthority, or lonnetCertificate
9520: undefined or incorrect
9521:
9522: =item Permission error:
9523:
9524: The directory pointed to by lonCertificateDirectory is not readable by lond
9525:
9526: =item Permission error:
9527:
9528: Files in the directory pointed to by lonCertificateDirectory are not readable by lond.
9529:
9530: =item Installation error:
9531:
9532: Either the certificate authority file or the certificate have not
9533: been installed in lonCertificateDirectory.
9534:
9535: =item (Red) CRITICAL SSL Socket promotion failed: <err>
9536:
9537: The promotion of the connection from plaintext to SSL failed
9538: <err> is the reason for the failure. There are two
9539: system calls involved in the promotion (one of which failed),
9540: a dup to produce
9541: a second fd on the raw socket over which the encrypted data
9542: will flow and IO::SOcket::SSL->new_from_fd which creates
9543: the SSL connection on the duped fd.
9544:
9545: =item (Blue) WARNING client did not respond to challenge
9546:
9547: This occurs on an insecure (non SSL) connection negotiation request.
9548: lond generates some number from the time, the PID and sends it to
9549: the client. The client must respond by echoing this information back.
9550: If the client does not do so, that's a violation of the challenge
9551: protocols and the connection will be failed.
9552:
9553: =item (Red) No manager table. Nobody can manage!!
9554:
9555: lond has the concept of privileged hosts that
9556: can perform remote management function such
9557: as update the hosts.tab. The manager hosts
9558: are described in the
9559: ~httpd/lonTabs/managers.tab file.
9560: this message is logged if this file is missing.
9561:
9562:
9563: =item (Green) Registering manager <dnsname> as <cluster_name> with <ipaddress>
9564:
9565: Reports the successful parse and registration
9566: of a specific manager.
9567:
9568: =item Green existing host <clustername:dnsname>
9569:
9570: The manager host is already defined in the hosts.tab
9571: the information in that table, rather than the info in the
9572: manager table will be used to determine the manager's ip.
9573:
9574: =item (Red) Unable to craete <filename>
9575:
9576: lond has been asked to create new versions of an administrative
9577: file (by a manager). When this is done, the new file is created
9578: in a temp file and then renamed into place so that there are always
9579: usable administrative files, even if the update fails. This failure
9580: message means that the temp file could not be created.
9581: The update is abandoned, and the old file is available for use.
9582:
9583: =item (Green) CopyFile from <oldname> to <newname> failed
9584:
9585: In an update of administrative files, the copy of the existing file to a
9586: backup file failed. The installation of the new file may still succeed,
9587: but there will not be a back up file to rever to (this should probably
9588: be yellow).
9589:
9590: =item (Green) Pushfile: backed up <oldname> to <newname>
9591:
9592: See above, the backup of the old administrative file succeeded.
9593:
9594: =item (Red) Pushfile: Unable to install <filename> <reason>
9595:
9596: The new administrative file could not be installed. In this case,
9597: the old administrative file is still in use.
9598:
9599: =item (Green) Installed new < filename>.
9600:
9601: The new administrative file was successfullly installed.
9602:
9603: =item (Red) Reinitializing lond pid=<pid>
9604:
9605: The lonc child process <pid> will be sent a USR2
9606: signal.
9607:
9608: =item (Red) Reinitializing self
9609:
9610: We've been asked to re-read our administrative files,and
9611: are doing so.
9612:
9613: =item (Yellow) error:Invalid process identifier <ident>
9614:
9615: A reinit command was received, but the target part of the
9616: command was not valid. It must be either
9617: 'lond' or 'lonc' but was <ident>
9618:
9619: =item (Green) isValideditCommand checking: Command = <command> Key = <key> newline = <newline>
9620:
9621: Checking to see if lond has been handed a valid edit
9622: command. It is possible the edit command is not valid
9623: in that case there are no log messages to indicate that.
9624:
9625: =item Result of password change for <username> pwchange_success
9626:
9627: The password for <username> was
9628: successfully changed.
9629:
9630: =item Unable to open <user> passwd to change password
9631:
9632: Could not rewrite the
9633: internal password file for a user
9634:
9635: =item Result of password change for <user> : <result>
9636:
9637: A unix password change for <user> was attempted
9638: and the pipe returned <result>
9639:
9640: =item LWP GET: <message> for <fname> (<remoteurl>)
9641:
9642: The lightweight process fetch for a resource failed
9643: with <message> the local filename that should
9644: have existed/been created was <fname> the
9645: corresponding URI: <remoteurl> This is emitted in several
9646: places.
9647:
9648: =item Unable to move <transname> to <destname>
9649:
9650: From fetch_user_file_handler - the user file was replicated but could not
9651: be mv'd to its final location.
9652:
9653: =item Looking for <domain> <username>
9654:
9655: From user_has_session_handler - This should be a Debug call instead
9656: it indicates lond is about to check whether the specified user has a
9657: session active on the specified domain on the local host.
9658:
9659: =item Client <ip> (<name>) hanging up: <input>
9660:
9661: lond has been asked to exit by its client. The <ip> and <name> identify the
9662: client systemand <input> is the full exit command sent to the server.
9663:
9664: =item Red CRITICAL: ABNORMAL EXIT. child <pid> for server <hostname> died through a crass with this error->[<message>].
9665:
9666: A lond child terminated. NOte that this termination can also occur when the
9667: child receives the QUIT or DIE signals. <pid> is the process id of the child,
9668: <hostname> the host lond is working for, and <message> the reason the child died
9669: to the best of our ability to get it (I would guess that any numeric value
9670: represents and errno value). This is immediately followed by
9671:
9672: =item Famous last words: Catching exception - <log>
9673:
9674: Where log is some recent information about the state of the child.
9675:
9676: =item Red CRITICAL: TIME OUT <pid>
9677:
9678: Some timeout occured for server <pid>. THis is normally a timeout on an LWP
9679: doing an HTTP::GET.
9680:
9681: =item child <pid> died
9682:
9683: The reaper caught a SIGCHILD for the lond child process <pid>
9684: This should be modified to also display the IP of the dying child
9685: $children{$pid}
9686:
9687: =item Unknown child 0 died
9688: A child died but the wait for it returned a pid of zero which really should not
9689: ever happen.
9690:
9691: =item Child <which> - <pid> looks like we missed it's death
9692:
9693: When a sigchild is received, the reaper process checks all children to see if they are
9694: alive. If children are dying quite quickly, the lack of signal queuing can mean
9695: that a signal hearalds the death of more than one child. If so this message indicates
9696: which other one died. <which> is the ip of a dead child
9697:
9698: =item Free socket: <shutdownretval>
9699:
9700: The HUNTSMAN sub was called due to a SIGINT in a child process. The socket is being shutdown.
9701: for whatever reason, <shutdownretval> is printed but in fact shutdown() is not documented
9702: to return anything. This is followed by:
9703:
9704: =item Red CRITICAL: Shutting down
9705:
9706: Just prior to exit.
9707:
9708: =item Free socket: <shutdownretval>
9709:
9710: The HUPSMAN sub was called due to a SIGHUP. all children get killsed, and lond execs itself.
9711: This is followed by:
9712:
9713: =item (Red) CRITICAL: Restarting
9714:
9715: lond is about to exec itself to restart.
9716:
9717: =item (Blue) Updating connections
9718:
9719: (In response to a USR2). All the children (except the one for localhost)
9720: are about to be killed, the hosts tab reread, and Apache reloaded via apachereload.
9721:
9722: =item (Blue) UpdateHosts killing child <pid> for ip <ip>
9723:
9724: Due to USR2 as above.
9725:
9726: =item (Green) keeping child for ip <ip> (pid = <pid>)
9727:
9728: In response to USR2 as above, the child indicated is not being restarted because
9729: it's assumed that we'll always need a child for the localhost.
9730:
9731:
9732: =item Going to check on the children
9733:
9734: Parent is about to check on the health of the child processes.
9735: Note that this is in response to a USR1 sent to the parent lond.
9736: there may be one or more of the next two messages:
9737:
9738: =item <pid> is dead
9739:
9740: A child that we have in our child hash as alive has evidently died.
9741:
9742: =item Child <pid> did not respond
9743:
9744: In the health check the child <pid> did not update/produce a pid_.txt
9745: file when sent it's USR1 signal. That process is killed with a 9 signal, as it's
9746: assumed to be hung in some un-fixable way.
9747:
9748: =item Finished checking children
9749:
9750: Master processs's USR1 processing is cojmplete.
9751:
9752: =item (Red) CRITICAL: ------- Starting ------
9753:
9754: (There are more '-'s on either side). Lond has forked itself off to
9755: form a new session and is about to start actual initialization.
9756:
9757: =item (Green) Attempting to start child (<client>)
9758:
9759: Started a new child process for <client>. Client is IO::Socket object
9760: connected to the child. This was as a result of a TCP/IP connection from a client.
9761:
9762: =item Unable to determine who caller was, getpeername returned nothing
9763:
9764: In child process initialization. either getpeername returned undef or
9765: a zero sized object was returned. Processing continues, but in my opinion,
9766: this should be cause for the child to exit.
9767:
9768: =item Unable to determine clientip
9769:
9770: In child process initialization. The peer address from getpeername was not defined.
9771: The client address is stored as "Unavailable" and processing continues.
9772:
9773: =item (Yellow) INFO: Connection <ip> <name> connection type = <type>
9774:
9775: In child initialization. A good connectionw as received from <ip>.
9776:
9777: =over 2
9778:
9779: =item <name>
9780:
9781: is the name of the client from hosts.tab.
9782:
9783: =item <type>
9784:
9785: Is the connection type which is either
9786:
9787: =over 2
9788:
9789: =item manager
9790:
9791: The connection is from a manager node, not in hosts.tab
9792:
9793: =item client
9794:
9795: the connection is from a non-manager in the hosts.tab
9796:
9797: =item both
9798:
9799: The connection is from a manager in the hosts.tab.
9800:
9801: =back
9802:
9803: =back
9804:
9805: =item (Blue) Certificates not installed -- trying insecure auth
9806:
9807: One of the certificate file, key file or
9808: certificate authority file could not be found for a client attempting
9809: SSL connection intiation. COnnection will be attemptied in in-secure mode.
9810: (this would be a system with an up to date lond that has not gotten a
9811: certificate from us).
9812:
9813: =item (Green) Successful local authentication
9814:
9815: A local connection successfully negotiated the encryption key.
9816: In this case the IDEA key is in a file (that is hopefully well protected).
9817:
9818: =item (Green) Successful ssl authentication with <client>
9819:
9820: The client (<client> is the peer's name in hosts.tab), has successfully
9821: negotiated an SSL connection with this child process.
9822:
9823: =item (Green) Successful insecure authentication with <client>
9824:
9825:
9826: The client has successfully negotiated an insecure connection withthe child process.
9827:
9828: =item (Yellow) Attempted insecure connection disallowed
9829:
9830: The client attempted and failed to successfully negotiate a successful insecure
9831: connection. This can happen either because the variable londAllowInsecure is false
9832: or undefined, or becuse the child did not successfully echo back the challenge
9833: string.
9834:
9835:
9836: =back
9837:
9838: =back
9839:
9840:
9841: =cut
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