File:
[LON-CAPA] /
loncom /
lond
Revision
1.542:
download - view:
text,
annotated -
select for diffs
Thu Feb 1 04:50:41 2018 UTC (6 years, 2 months ago) by
raeburn
Branches:
MAIN
CVS tags:
HEAD
- Checking if enrollment data can be accessed for a course uses a single
call to localenroll::check_instclasses(), mediated via lonnet/lond.
1: #!/usr/bin/perl
2: # The LearningOnline Network
3: # lond "LON Daemon" Server (port "LOND" 5663)
4: #
5: # $Id: lond,v 1.542 2018/02/01 04:50:41 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: 1.542 $'; #' 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; # Client allowed to host domain's users.
84: # (version constraints ignored), not set
85: # if this host and client share "internet domain".
86: my %clientprohibited; # Actions prohibited on client;
87:
88: my $server;
89:
90: my $keymode;
91:
92: my $cipher; # Cipher key negotiated with client
93: my $tmpsnum = 0; # Id of tmpputs.
94:
95: #
96: # Connection type is:
97: # client - All client actions are allowed
98: # manager - only management functions allowed.
99: # both - Both management and client actions are allowed
100: #
101:
102: my $ConnectionType;
103:
104: my %managers; # Ip -> manager names
105:
106: my %perlvar; # Will have the apache conf defined perl vars.
107:
108: my %secureconf; # Will have requirements for security
109: # of lond connections
110:
111: my $dist;
112:
113: #
114: # The hash below is used for command dispatching, and is therefore keyed on the request keyword.
115: # Each element of the hash contains a reference to an array that contains:
116: # A reference to a sub that executes the request corresponding to the keyword.
117: # A flag that is true if the request must be encoded to be acceptable.
118: # A mask with bits as follows:
119: # CLIENT_OK - Set when the function is allowed by ordinary clients
120: # MANAGER_OK - Set when the function is allowed to manager clients.
121: #
122: my $CLIENT_OK = 1;
123: my $MANAGER_OK = 2;
124: my %Dispatcher;
125:
126:
127: #
128: # The array below are password error strings."
129: #
130: my $lastpwderror = 13; # Largest error number from lcpasswd.
131: my @passwderrors = ("ok",
132: "pwchange_failure - lcpasswd must be run as user 'www'",
133: "pwchange_failure - lcpasswd got incorrect number of arguments",
134: "pwchange_failure - lcpasswd did not get the right nubmer of input text lines",
135: "pwchange_failure - lcpasswd too many simultaneous pwd changes in progress",
136: "pwchange_failure - lcpasswd User does not exist.",
137: "pwchange_failure - lcpasswd Incorrect current passwd",
138: "pwchange_failure - lcpasswd Unable to su to root.",
139: "pwchange_failure - lcpasswd Cannot set new passwd.",
140: "pwchange_failure - lcpasswd Username has invalid characters",
141: "pwchange_failure - lcpasswd Invalid characters in password",
142: "pwchange_failure - lcpasswd User already exists",
143: "pwchange_failure - lcpasswd Something went wrong with user addition.",
144: "pwchange_failure - lcpasswd Password mismatch",
145: "pwchange_failure - lcpasswd Error filename is invalid");
146:
147:
148: # This array are the errors from lcinstallfile:
149:
150: my @installerrors = ("ok",
151: "Initial user id of client not that of www",
152: "Usage error, not enough command line arguments",
153: "Source filename does not exist",
154: "Destination filename does not exist",
155: "Some file operation failed",
156: "Invalid table filename."
157: );
158:
159: #
160: # The %trust hash classifies commands according to type of trust
161: # required for execution of the command.
162: #
163: # When clients from a different institution request execution of a
164: # particular command, the trust settings for that institution set
165: # for this domain (or default domain for a multi-domain server) will
166: # be checked to see if running the command is allowed.
167: #
168: # Trust types which depend on the "Trust" domain configuration
169: # for the machine's default domain are:
170: #
171: # content ("Access to this domain's content by others")
172: # shared ("Access to other domain's content by this domain")
173: # enroll ("Enrollment in this domain's courses by others")
174: # coaurem ("Co-author roles for this domain's users elsewhere")
175: # domroles ("Domain roles in this domain assignable to others")
176: # catalog ("Course Catalog for this domain displayed elsewhere")
177: # reqcrs ("Requests for creation of courses in this domain by others")
178: # msg ("Users in other domains can send messages to this domain")
179: #
180: # Trust type which depends on the User Session Hosting (remote)
181: # domain configuration for machine's default domain is: "remote".
182: #
183: # Trust types which depend on contents of manager.tab in
184: # /home/httpd/lonTabs is: "manageronly".
185: #
186: # Trust type which requires client to share the same LON-CAPA
187: # "internet domain" (i.e., same institution as this server) is:
188: # "institutiononly".
189: #
190:
191: my %trust = (
192: auth => {remote => 1},
193: autocreatepassword => {remote => 1},
194: autocrsreqchecks => {remote => 1, reqcrs => 1},
195: autocrsrequpdate => {remote => 1},
196: autocrsreqvalidation => {remote => 1},
197: autogetsections => {remote => 1},
198: autoinstcodedefaults => {remote => 1, catalog => 1},
199: autoinstcodeformat => {remote => 1, catalog => 1},
200: autonewcourse => {remote => 1, reqcrs => 1},
201: autophotocheck => {remote => 1, enroll => 1},
202: autophotochoice => {remote => 1},
203: autophotopermission => {remote => 1, enroll => 1},
204: autopossibleinstcodes => {remote => 1, reqcrs => 1},
205: autoretrieve => {remote => 1, enroll => 1, catalog => 1},
206: autorun => {remote => 1, enroll => 1, reqcrs => 1},
207: autovalidateclass_sec => {catalog => 1},
208: autovalidatecourse => {remote => 1, enroll => 1},
209: autovalidateinstcode => {domroles => 1, remote => 1, enroll => 1},
210: changeuserauth => {remote => 1, domroles => 1},
211: chatretr => {remote => 1, enroll => 1},
212: chatsend => {remote => 1, enroll => 1},
213: courseiddump => {remote => 1, domroles => 1, enroll => 1},
214: courseidput => {remote => 1, domroles => 1, enroll => 1},
215: courseidputhash => {remote => 1, domroles => 1, enroll => 1},
216: courselastaccess => {remote => 1, domroles => 1, enroll => 1},
217: currentauth => {remote => 1, domroles => 1, enroll => 1},
218: currentdump => {remote => 1, enroll => 1},
219: currentversion => {remote=> 1, content => 1},
220: dcmaildump => {remote => 1, domroles => 1},
221: dcmailput => {remote => 1, domroles => 1},
222: del => {remote => 1, domroles => 1, enroll => 1, content => 1},
223: deldom => {remote => 1, domroles => 1}, # not currently used
224: devalidatecache => {institutiononly => 1},
225: domroleput => {remote => 1, enroll => 1},
226: domrolesdump => {remote => 1, catalog => 1},
227: du => {remote => 1, enroll => 1},
228: du2 => {remote => 1, enroll => 1},
229: dump => {remote => 1, enroll => 1, domroles => 1},
230: edit => {institutiononly => 1}, #not used currently
231: eget => {remote => 1, domroles => 1, enroll => 1}, #not used currently
232: egetdom => {remote => 1, domroles => 1, enroll => 1, },
233: ekey => {}, #not used currently
234: exit => {anywhere => 1},
235: fetchuserfile => {remote => 1, enroll => 1},
236: get => {remote => 1, domroles => 1, enroll => 1},
237: getdom => {anywhere => 1},
238: home => {anywhere => 1},
239: iddel => {remote => 1, enroll => 1},
240: idget => {remote => 1, enroll => 1},
241: idput => {remote => 1, domroles => 1, enroll => 1},
242: inc => {remote => 1, enroll => 1},
243: init => {anywhere => 1},
244: inst_usertypes => {remote => 1, domroles => 1, enroll => 1},
245: instemailrules => {remote => 1, domroles => 1},
246: instidrulecheck => {remote => 1, domroles => 1,},
247: instidrules => {remote => 1, domroles => 1,},
248: instrulecheck => {remote => 1, enroll => 1, reqcrs => 1, domroles => 1},
249: instselfcreatecheck => {institutiononly => 1},
250: instuserrules => {remote => 1, enroll => 1, reqcrs => 1, domroles => 1},
251: keys => {remote => 1,},
252: load => {anywhere => 1},
253: log => {anywhere => 1},
254: ls => {remote => 1, enroll => 1, content => 1,},
255: ls2 => {remote => 1, enroll => 1, content => 1,},
256: ls3 => {remote => 1, enroll => 1, content => 1,},
257: makeuser => {remote => 1, enroll => 1, domroles => 1,},
258: mkdiruserfile => {remote => 1, enroll => 1,},
259: newput => {remote => 1, enroll => 1, reqcrs => 1, domroles => 1,},
260: passwd => {remote => 1},
261: ping => {anywhere => 1},
262: pong => {anywhere => 1},
263: pushfile => {manageronly => 1},
264: put => {remote => 1, enroll => 1, domroles => 1, msg => 1, content => 1, shared => 1},
265: putdom => {remote => 1, domroles => 1,},
266: putstore => {remote => 1, enroll => 1},
267: queryreply => {anywhere => 1},
268: querysend => {anywhere => 1},
269: querysend_activitylog => {remote => 1},
270: querysend_allusers => {remote => 1, domroles => 1},
271: querysend_courselog => {remote => 1},
272: querysend_fetchenrollment => {remote => 1},
273: querysend_getinstuser => {remote => 1},
274: querysend_getmultinstusers => {remote => 1},
275: querysend_instdirsearch => {remote => 1, domroles => 1, coaurem => 1},
276: querysend_institutionalphotos => {remote => 1},
277: querysend_portfolio_metadata => {remote => 1, content => 1},
278: querysend_userlog => {remote => 1, domroles => 1},
279: querysend_usersearch => {remote => 1, enroll => 1, coaurem => 1},
280: quit => {anywhere => 1},
281: readlonnetglobal => {institutiononly => 1},
282: reinit => {manageronly => 1}, #not used currently
283: removeuserfile => {remote => 1, enroll => 1},
284: renameuserfile => {remote => 1,},
285: restore => {remote => 1, enroll => 1, reqcrs => 1,},
286: rolesdel => {remote => 1, enroll => 1, domroles => 1, coaurem => 1},
287: rolesput => {remote => 1, enroll => 1, domroles => 1, coaurem => 1},
288: servercerts => {institutiononly => 1},
289: serverdistarch => {anywhere => 1},
290: serverhomeID => {anywhere => 1},
291: serverloncaparev => {anywhere => 1},
292: servertimezone => {remote => 1, enroll => 1},
293: setannounce => {remote => 1, domroles => 1},
294: sethost => {anywhere => 1},
295: store => {remote => 1, enroll => 1, reqcrs => 1,},
296: studentphoto => {remote => 1, enroll => 1},
297: sub => {content => 1,},
298: tmpdel => {anywhere => 1},
299: tmpget => {anywhere => 1},
300: tmpput => {anywhere => 1},
301: tokenauthuserfile => {anywhere => 1},
302: unsub => {content => 1,},
303: update => {shared => 1},
304: updateclickers => {remote => 1},
305: userhassession => {anywhere => 1},
306: userload => {anywhere => 1},
307: version => {anywhere => 1}, #not used
308: );
309:
310: #
311: # Statistics that are maintained and dislayed in the status line.
312: #
313: my $Transactions = 0; # Number of attempted transactions.
314: my $Failures = 0; # Number of transcations failed.
315:
316: # ResetStatistics:
317: # Resets the statistics counters:
318: #
319: sub ResetStatistics {
320: $Transactions = 0;
321: $Failures = 0;
322: }
323:
324: #------------------------------------------------------------------------
325: #
326: # LocalConnection
327: # Completes the formation of a locally authenticated connection.
328: # This function will ensure that the 'remote' client is really the
329: # local host. If not, the connection is closed, and the function fails.
330: # If so, initcmd is parsed for the name of a file containing the
331: # IDEA session key. The fie is opened, read, deleted and the session
332: # key returned to the caller.
333: #
334: # Parameters:
335: # $Socket - Socket open on client.
336: # $initcmd - The full text of the init command.
337: #
338: # Returns:
339: # IDEA session key on success.
340: # undef on failure.
341: #
342: sub LocalConnection {
343: my ($Socket, $initcmd) = @_;
344: Debug("Attempting local connection: $initcmd client: $clientip");
345: if($clientip ne "127.0.0.1") {
346: &logthis('<font color="red"> LocalConnection rejecting non local: '
347: ."$clientip ne 127.0.0.1 </font>");
348: close $Socket;
349: return undef;
350: } else {
351: chomp($initcmd); # Get rid of \n in filename.
352: my ($init, $type, $name) = split(/:/, $initcmd);
353: Debug(" Init command: $init $type $name ");
354:
355: # Require that $init = init, and $type = local: Otherwise
356: # the caller is insane:
357:
358: if(($init ne "init") && ($type ne "local")) {
359: &logthis('<font color = "red"> LocalConnection: caller is insane! '
360: ."init = $init, and type = $type </font>");
361: close($Socket);;
362: return undef;
363:
364: }
365: # Now get the key filename:
366:
367: my $IDEAKey = lonlocal::ReadKeyFile($name);
368: return $IDEAKey;
369: }
370: }
371: #------------------------------------------------------------------------------
372: #
373: # SSLConnection
374: # Completes the formation of an ssh authenticated connection. The
375: # socket is promoted to an ssl socket. If this promotion and the associated
376: # certificate exchange are successful, the IDEA key is generated and sent
377: # to the remote peer via the SSL tunnel. The IDEA key is also returned to
378: # the caller after the SSL tunnel is torn down.
379: #
380: # Parameters:
381: # Name Type Purpose
382: # $Socket IO::Socket::INET Plaintext socket.
383: #
384: # Returns:
385: # IDEA key on success.
386: # undef on failure.
387: #
388: sub SSLConnection {
389: my $Socket = shift;
390:
391: Debug("SSLConnection: ");
392: my $KeyFile = lonssl::KeyFile();
393: if(!$KeyFile) {
394: my $err = lonssl::LastError();
395: &logthis("<font color=\"red\"> CRITICAL"
396: ."Can't get key file $err </font>");
397: return undef;
398: }
399: my ($CACertificate,
400: $Certificate) = lonssl::CertificateFile();
401:
402:
403: # If any of the key, certificate or certificate authority
404: # certificate filenames are not defined, this can't work.
405:
406: if((!$Certificate) || (!$CACertificate)) {
407: my $err = lonssl::LastError();
408: &logthis("<font color=\"red\"> CRITICAL"
409: ."Can't get certificates: $err </font>");
410:
411: return undef;
412: }
413: Debug("Key: $KeyFile CA: $CACertificate Cert: $Certificate");
414:
415: # Indicate to our peer that we can procede with
416: # a transition to ssl authentication:
417:
418: print $Socket "ok:ssl\n";
419:
420: Debug("Approving promotion -> ssl");
421: # And do so:
422:
423: my $SSLSocket = lonssl::PromoteServerSocket($Socket,
424: $CACertificate,
425: $Certificate,
426: $KeyFile);
427: if(! ($SSLSocket) ) { # SSL socket promotion failed.
428: my $err = lonssl::LastError();
429: &logthis("<font color=\"red\"> CRITICAL "
430: ."SSL Socket promotion failed: $err </font>");
431: return undef;
432: }
433: Debug("SSL Promotion successful");
434:
435: #
436: # The only thing we'll use the socket for is to send the IDEA key
437: # to the peer:
438:
439: my $Key = lonlocal::CreateCipherKey();
440: print $SSLSocket "$Key\n";
441:
442: lonssl::Close($SSLSocket);
443:
444: Debug("Key exchange complete: $Key");
445:
446: return $Key;
447: }
448: #
449: # InsecureConnection:
450: # If insecure connections are allowd,
451: # exchange a challenge with the client to 'validate' the
452: # client (not really, but that's the protocol):
453: # We produce a challenge string that's sent to the client.
454: # The client must then echo the challenge verbatim to us.
455: #
456: # Parameter:
457: # Socket - Socket open on the client.
458: # Returns:
459: # 1 - success.
460: # 0 - failure (e.g.mismatch or insecure not allowed).
461: #
462: sub InsecureConnection {
463: my $Socket = shift;
464:
465: # Don't even start if insecure connections are not allowed.
466: # return 0 if Insecure connections not allowed.
467: #
468: if (ref($secureconf{'connfrom'}) eq 'HASH') {
469: if ($clientsamedom) {
470: if ($secureconf{'connfrom'}{'dom'} eq 'req') {
471: return 0;
472: }
473: } elsif ($clientsameinst) {
474: if ($secureconf{'connfrom'}{'intdom'} eq 'req') {
475: return 0;
476: }
477: } else {
478: if ($secureconf{'connfrom'}{'other'} eq 'req') {
479: return 0;
480: }
481: }
482: } elsif (!$perlvar{londAllowInsecure}) {
483: return 0;
484: }
485:
486: # Fabricate a challenge string and send it..
487:
488: my $challenge = "$$".time; # pid + time.
489: print $Socket "$challenge\n";
490: &status("Waiting for challenge reply");
491:
492: my $answer = <$Socket>;
493: $answer =~s/\W//g;
494: if($challenge eq $answer) {
495: return 1;
496: } else {
497: logthis("<font color='blue'>WARNING client did not respond to challenge</font>");
498: &status("No challenge reqply");
499: return 0;
500: }
501:
502:
503: }
504: #
505: # Safely execute a command (as long as it's not a shel command and doesn
506: # not require/rely on shell escapes. The function operates by doing a
507: # a pipe based fork and capturing stdout and stderr from the pipe.
508: #
509: # Formal Parameters:
510: # $line - A line of text to be executed as a command.
511: # Returns:
512: # The output from that command. If the output is multiline the caller
513: # must know how to split up the output.
514: #
515: #
516: sub execute_command {
517: my ($line) = @_;
518: my @words = split(/\s/, $line); # Bust the command up into words.
519: my $output = "";
520:
521: my $pid = open(CHILD, "-|");
522:
523: if($pid) { # Parent process
524: Debug("In parent process for execute_command");
525: my @data = <CHILD>; # Read the child's outupt...
526: close CHILD;
527: foreach my $output_line (@data) {
528: Debug("Adding $output_line");
529: $output .= $output_line; # Presumably has a \n on it.
530: }
531:
532: } else { # Child process
533: close (STDERR);
534: open (STDERR, ">&STDOUT");# Combine stderr, and stdout...
535: exec(@words); # won't return.
536: }
537: return $output;
538: }
539:
540:
541: # GetCertificate: Given a transaction that requires a certificate,
542: # this function will extract the certificate from the transaction
543: # request. Note that at this point, the only concept of a certificate
544: # is the hostname to which we are connected.
545: #
546: # Parameter:
547: # request - The request sent by our client (this parameterization may
548: # need to change when we really use a certificate granting
549: # authority.
550: #
551: sub GetCertificate {
552: my $request = shift;
553:
554: return $clientip;
555: }
556:
557: #
558: # Return true if client is a manager.
559: #
560: sub isManager {
561: return (($ConnectionType eq "manager") || ($ConnectionType eq "both"));
562: }
563: #
564: # Return tru if client can do client functions
565: #
566: sub isClient {
567: return (($ConnectionType eq "client") || ($ConnectionType eq "both"));
568: }
569:
570:
571: #
572: # ReadManagerTable: Reads in the current manager table. For now this is
573: # done on each manager authentication because:
574: # - These authentications are not frequent
575: # - This allows dynamic changes to the manager table
576: # without the need to signal to the lond.
577: #
578: sub ReadManagerTable {
579:
580: &Debug("Reading manager table");
581: # Clean out the old table first..
582:
583: foreach my $key (keys %managers) {
584: delete $managers{$key};
585: }
586:
587: my $tablename = $perlvar{'lonTabDir'}."/managers.tab";
588: if (!open (MANAGERS, $tablename)) {
589: my $hostname = &Apache::lonnet::hostname($perlvar{'lonHostID'});
590: if (&Apache::lonnet::is_LC_dns($hostname)) {
591: &logthis('<font color="red">No manager table. Nobody can manage!!</font>');
592: }
593: return;
594: }
595: while(my $host = <MANAGERS>) {
596: chomp($host);
597: if ($host =~ "^#") { # Comment line.
598: next;
599: }
600: if (!defined &Apache::lonnet::get_host_ip($host)) { # This is a non cluster member
601: # The entry is of the form:
602: # cluname:hostname
603: # cluname - A 'cluster hostname' is needed in order to negotiate
604: # the host key.
605: # hostname- The dns name of the host.
606: #
607: my($cluname, $dnsname) = split(/:/, $host);
608:
609: my $ip = gethostbyname($dnsname);
610: if(defined($ip)) { # bad names don't deserve entry.
611: my $hostip = inet_ntoa($ip);
612: $managers{$hostip} = $cluname;
613: logthis('<font color="green"> registering manager '.
614: "$dnsname as $cluname with $hostip </font>\n");
615: }
616: } else {
617: logthis('<font color="green"> existing host'." $host</font>\n");
618: $managers{&Apache::lonnet::get_host_ip($host)} = $host; # Use info from cluster tab if cluster memeber
619: }
620: }
621: }
622:
623: #
624: # ValidManager: Determines if a given certificate represents a valid manager.
625: # in this primitive implementation, the 'certificate' is
626: # just the connecting loncapa client name. This is checked
627: # against a valid client list in the configuration.
628: #
629: #
630: sub ValidManager {
631: my $certificate = shift;
632:
633: return isManager;
634: }
635: #
636: # CopyFile: Called as part of the process of installing a
637: # new configuration file. This function copies an existing
638: # file to a backup file.
639: # Parameters:
640: # oldfile - Name of the file to backup.
641: # newfile - Name of the backup file.
642: # Return:
643: # 0 - Failure (errno has failure reason).
644: # 1 - Success.
645: #
646: sub CopyFile {
647:
648: my ($oldfile, $newfile) = @_;
649:
650: if (! copy($oldfile,$newfile)) {
651: return 0;
652: }
653: chmod(0660, $newfile);
654: return 1;
655: }
656: #
657: # Host files are passed out with externally visible host IPs.
658: # If, for example, we are behind a fire-wall or NAT host, our
659: # internally visible IP may be different than the externally
660: # visible IP. Therefore, we always adjust the contents of the
661: # host file so that the entry for ME is the IP that we believe
662: # we have. At present, this is defined as the entry that
663: # DNS has for us. If by some chance we are not able to get a
664: # DNS translation for us, then we assume that the host.tab file
665: # is correct.
666: # BUGBUGBUG - in the future, we really should see if we can
667: # easily query the interface(s) instead.
668: # Parameter(s):
669: # contents - The contents of the host.tab to check.
670: # Returns:
671: # newcontents - The adjusted contents.
672: #
673: #
674: sub AdjustHostContents {
675: my $contents = shift;
676: my $adjusted;
677: my $me = $perlvar{'lonHostID'};
678:
679: foreach my $line (split(/\n/,$contents)) {
680: if(!(($line eq "") || ($line =~ /^ *\#/) || ($line =~ /^ *$/) ||
681: ($line =~ /^\s*\^/))) {
682: chomp($line);
683: my ($id,$domain,$role,$name,$ip,$maxcon,$idleto,$mincon)=split(/:/,$line);
684: if ($id eq $me) {
685: my $ip = gethostbyname($name);
686: my $ipnew = inet_ntoa($ip);
687: $ip = $ipnew;
688: # Reconstruct the host line and append to adjusted:
689:
690: my $newline = "$id:$domain:$role:$name:$ip";
691: if($maxcon ne "") { # Not all hosts have loncnew tuning params
692: $newline .= ":$maxcon:$idleto:$mincon";
693: }
694: $adjusted .= $newline."\n";
695:
696: } else { # Not me, pass unmodified.
697: $adjusted .= $line."\n";
698: }
699: } else { # Blank or comment never re-written.
700: $adjusted .= $line."\n"; # Pass blanks and comments as is.
701: }
702: }
703: return $adjusted;
704: }
705: #
706: # InstallFile: Called to install an administrative file:
707: # - The file is created int a temp directory called <name>.tmp
708: # - lcinstall file is called to install the file.
709: # since the web app has no direct write access to the table directory
710: #
711: # Parameters:
712: # Name of the file
713: # File Contents.
714: # Return:
715: # nonzero - success.
716: # 0 - failure and $! has an errno.
717: # Assumptions:
718: # File installtion is a relatively infrequent
719: #
720: sub InstallFile {
721:
722: my ($Filename, $Contents) = @_;
723: # my $TempFile = $Filename.".tmp";
724: my $exedir = $perlvar{'lonDaemons'};
725: my $tmpdir = $exedir.'/tmp/';
726: my $TempFile = $tmpdir."TempTableFile.tmp";
727:
728: # Open the file for write:
729:
730: my $fh = IO::File->new("> $TempFile"); # Write to temp.
731: if(!(defined $fh)) {
732: &logthis('<font color="red"> Unable to create '.$TempFile."</font>");
733: return 0;
734: }
735: # write the contents of the file:
736:
737: print $fh ($Contents);
738: $fh->close; # In case we ever have a filesystem w. locking
739:
740: chmod(0664, $TempFile); # Everyone can write it.
741:
742: # Use lcinstall file to put the file in the table directory...
743:
744: &Debug("Opening pipe to $exedir/lcinstallfile $TempFile $Filename");
745: my $pf = IO::File->new("| $exedir/lcinstallfile $TempFile $Filename > $exedir/logs/lcinstallfile.log");
746: close $pf;
747: my $err = $?;
748: &Debug("Status is $err");
749: if ($err != 0) {
750: my $msg = $err;
751: if ($err < @installerrors) {
752: $msg = $installerrors[$err];
753: }
754: &logthis("Install failed for table file $Filename : $msg");
755: return 0;
756: }
757:
758: # Remove the temp file:
759:
760: unlink($TempFile);
761:
762: return 1;
763: }
764:
765:
766: #
767: # ConfigFileFromSelector: converts a configuration file selector
768: # into a configuration file pathname.
769: # Supports the following file selectors:
770: # hosts, domain, dns_hosts, dns_domain
771: #
772: #
773: # Parameters:
774: # selector - Configuration file selector.
775: # Returns:
776: # Full path to the file or undef if the selector is invalid.
777: #
778: sub ConfigFileFromSelector {
779: my $selector = shift;
780: my $tablefile;
781:
782: my $tabledir = $perlvar{'lonTabDir'}.'/';
783: if (($selector eq "hosts") || ($selector eq "domain") ||
784: ($selector eq "dns_hosts") || ($selector eq "dns_domain")) {
785: $tablefile = $tabledir.$selector.'.tab';
786: }
787: return $tablefile;
788: }
789: #
790: # PushFile: Called to do an administrative push of a file.
791: # - Ensure the file being pushed is one we support.
792: # - Backup the old file to <filename.saved>
793: # - Separate the contents of the new file out from the
794: # rest of the request.
795: # - Write the new file.
796: # Parameter:
797: # Request - The entire user request. This consists of a : separated
798: # string pushfile:tablename:contents.
799: # NOTE: The contents may have :'s in it as well making things a bit
800: # more interesting... but not much.
801: # Returns:
802: # String to send to client ("ok" or "refused" if bad file).
803: #
804: sub PushFile {
805: my $request = shift;
806: my ($command, $filename, $contents) = split(":", $request, 3);
807: &Debug("PushFile");
808:
809: # At this point in time, pushes for only the following tables are
810: # supported:
811: # hosts.tab ($filename eq host).
812: # domain.tab ($filename eq domain).
813: # dns_hosts.tab ($filename eq dns_host).
814: # dns_domain.tab ($filename eq dns_domain).
815: # Construct the destination filename or reject the request.
816: #
817: # lonManage is supposed to ensure this, however this session could be
818: # part of some elaborate spoof that managed somehow to authenticate.
819: #
820:
821:
822: my $tablefile = ConfigFileFromSelector($filename);
823: if(! (defined $tablefile)) {
824: return "refused";
825: }
826:
827: # If the file being pushed is the host file, we adjust the entry for ourself so that the
828: # IP will be our current IP as looked up in dns. Note this is only 99% good as it's possible
829: # to conceive of conditions where we don't have a DNS entry locally. This is possible in a
830: # network sense but it doesn't make much sense in a LonCAPA sense so we ignore (for now)
831: # that possibilty.
832:
833: if($filename eq "host") {
834: $contents = AdjustHostContents($contents);
835: } elsif ($filename eq 'dns_host' || $filename eq 'dns_domain') {
836: if ($contents eq '') {
837: &logthis('<font color="red"> Pushfile: unable to install '
838: .$tablefile." - no data received from push. </font>");
839: return 'error: push had no data';
840: }
841: if (&Apache::lonnet::get_host_ip($clientname)) {
842: my $clienthost = &Apache::lonnet::hostname($clientname);
843: if ($managers{$clientip} eq $clientname) {
844: my $clientprotocol = $Apache::lonnet::protocol{$clientname};
845: $clientprotocol = 'http' if ($clientprotocol ne 'https');
846: my $url = '/adm/'.$filename;
847: $url =~ s{_}{/};
848: my $request=new HTTP::Request('GET',"$clientprotocol://$clienthost$url");
849: my $response = LONCAPA::LWPReq::makerequest($clientname,$request,'',\%perlvar,60,0);
850: if ($response->is_error()) {
851: &logthis('<font color="red"> Pushfile: unable to install '
852: .$tablefile." - error attempting to pull data. </font>");
853: return 'error: pull failed';
854: } else {
855: my $result = $response->content;
856: chomp($result);
857: unless ($result eq $contents) {
858: &logthis('<font color="red"> Pushfile: unable to install '
859: .$tablefile." - pushed data and pulled data differ. </font>");
860: my $pushleng = length($contents);
861: my $pullleng = length($result);
862: if ($pushleng != $pullleng) {
863: return "error: $pushleng vs $pullleng bytes";
864: } else {
865: return "error: mismatch push and pull";
866: }
867: }
868: }
869: }
870: }
871: }
872:
873: # Install the new file:
874:
875: &logthis("Installing new $tablefile contents:\n$contents");
876: if(!InstallFile($tablefile, $contents)) {
877: &logthis('<font color="red"> Pushfile: unable to install '
878: .$tablefile." $! </font>");
879: return "error:$!";
880: } else {
881: &logthis('<font color="green"> Installed new '.$tablefile
882: ." - transaction by: $clientname ($clientip)</font>");
883: my $adminmail = $perlvar{'lonAdmEMail'};
884: my $admindom = &Apache::lonnet::host_domain($perlvar{'lonHostID'});
885: if ($admindom ne '') {
886: my %domconfig =
887: &Apache::lonnet::get_dom('configuration',['contacts'],$admindom);
888: if (ref($domconfig{'contacts'}) eq 'HASH') {
889: if ($domconfig{'contacts'}{'adminemail'} ne '') {
890: $adminmail = $domconfig{'contacts'}{'adminemail'};
891: }
892: }
893: }
894: if ($adminmail =~ /^[^\@]+\@[^\@]+$/) {
895: my $msg = new Mail::Send;
896: $msg->to($adminmail);
897: $msg->subject('LON-CAPA DNS update on '.$perlvar{'lonHostID'});
898: $msg->add('Content-type','text/plain; charset=UTF-8');
899: if (my $fh = $msg->open()) {
900: print $fh 'Update to '.$tablefile.' from Cluster Manager '.
901: "$clientname ($clientip)\n";
902: $fh->close;
903: }
904: }
905: }
906:
907: # Indicate success:
908:
909: return "ok";
910:
911: }
912:
913: #
914: # Called to re-init either lonc or lond.
915: #
916: # Parameters:
917: # request - The full request by the client. This is of the form
918: # reinit:<process>
919: # where <process> is allowed to be either of
920: # lonc or lond
921: #
922: # Returns:
923: # The string to be sent back to the client either:
924: # ok - Everything worked just fine.
925: # error:why - There was a failure and why describes the reason.
926: #
927: #
928: sub ReinitProcess {
929: my $request = shift;
930:
931:
932: # separate the request (reinit) from the process identifier and
933: # validate it producing the name of the .pid file for the process.
934: #
935: #
936: my ($junk, $process) = split(":", $request);
937: my $processpidfile = $perlvar{'lonDaemons'}.'/logs/';
938: if($process eq 'lonc') {
939: $processpidfile = $processpidfile."lonc.pid";
940: if (!open(PIDFILE, "< $processpidfile")) {
941: return "error:Open failed for $processpidfile";
942: }
943: my $loncpid = <PIDFILE>;
944: close(PIDFILE);
945: logthis('<font color="red"> Reinitializing lonc pid='.$loncpid
946: ."</font>");
947: kill("USR2", $loncpid);
948: } elsif ($process eq 'lond') {
949: logthis('<font color="red"> Reinitializing self (lond) </font>');
950: &UpdateHosts; # Lond is us!!
951: } else {
952: &logthis('<font color="yellow" Invalid reinit request for '.$process
953: ."</font>");
954: return "error:Invalid process identifier $process";
955: }
956: return 'ok';
957: }
958: # Validate a line in a configuration file edit script:
959: # Validation includes:
960: # - Ensuring the command is valid.
961: # - Ensuring the command has sufficient parameters
962: # Parameters:
963: # scriptline - A line to validate (\n has been stripped for what it's worth).
964: #
965: # Return:
966: # 0 - Invalid scriptline.
967: # 1 - Valid scriptline
968: # NOTE:
969: # Only the command syntax is checked, not the executability of the
970: # command.
971: #
972: sub isValidEditCommand {
973: my $scriptline = shift;
974:
975: # Line elements are pipe separated:
976:
977: my ($command, $key, $newline) = split(/\|/, $scriptline);
978: &logthis('<font color="green"> isValideditCommand checking: '.
979: "Command = '$command', Key = '$key', Newline = '$newline' </font>\n");
980:
981: if ($command eq "delete") {
982: #
983: # key with no newline.
984: #
985: if( ($key eq "") || ($newline ne "")) {
986: return 0; # Must have key but no newline.
987: } else {
988: return 1; # Valid syntax.
989: }
990: } elsif ($command eq "replace") {
991: #
992: # key and newline:
993: #
994: if (($key eq "") || ($newline eq "")) {
995: return 0;
996: } else {
997: return 1;
998: }
999: } elsif ($command eq "append") {
1000: if (($key ne "") && ($newline eq "")) {
1001: return 1;
1002: } else {
1003: return 0;
1004: }
1005: } else {
1006: return 0; # Invalid command.
1007: }
1008: return 0; # Should not get here!!!
1009: }
1010: #
1011: # ApplyEdit - Applies an edit command to a line in a configuration
1012: # file. It is the caller's responsiblity to validate the
1013: # edit line.
1014: # Parameters:
1015: # $directive - A single edit directive to apply.
1016: # Edit directives are of the form:
1017: # append|newline - Appends a new line to the file.
1018: # replace|key|newline - Replaces the line with key value 'key'
1019: # delete|key - Deletes the line with key value 'key'.
1020: # $editor - A config file editor object that contains the
1021: # file being edited.
1022: #
1023: sub ApplyEdit {
1024:
1025: my ($directive, $editor) = @_;
1026:
1027: # Break the directive down into its command and its parameters
1028: # (at most two at this point. The meaning of the parameters, if in fact
1029: # they exist depends on the command).
1030:
1031: my ($command, $p1, $p2) = split(/\|/, $directive);
1032:
1033: if($command eq "append") {
1034: $editor->Append($p1); # p1 - key p2 null.
1035: } elsif ($command eq "replace") {
1036: $editor->ReplaceLine($p1, $p2); # p1 - key p2 = newline.
1037: } elsif ($command eq "delete") {
1038: $editor->DeleteLine($p1); # p1 - key p2 null.
1039: } else { # Should not get here!!!
1040: die "Invalid command given to ApplyEdit $command"
1041: }
1042: }
1043: #
1044: # AdjustOurHost:
1045: # Adjusts a host file stored in a configuration file editor object
1046: # for the true IP address of this host. This is necessary for hosts
1047: # that live behind a firewall.
1048: # Those hosts have a publicly distributed IP of the firewall, but
1049: # internally must use their actual IP. We assume that a given
1050: # host only has a single IP interface for now.
1051: # Formal Parameters:
1052: # editor - The configuration file editor to adjust. This
1053: # editor is assumed to contain a hosts.tab file.
1054: # Strategy:
1055: # - Figure out our hostname.
1056: # - Lookup the entry for this host.
1057: # - Modify the line to contain our IP
1058: # - Do a replace for this host.
1059: sub AdjustOurHost {
1060: my $editor = shift;
1061:
1062: # figure out who I am.
1063:
1064: my $myHostName = $perlvar{'lonHostID'}; # LonCAPA hostname.
1065:
1066: # Get my host file entry.
1067:
1068: my $ConfigLine = $editor->Find($myHostName);
1069: if(! (defined $ConfigLine)) {
1070: die "AdjustOurHost - no entry for me in hosts file $myHostName";
1071: }
1072: # figure out my IP:
1073: # Use the config line to get my hostname.
1074: # Use gethostbyname to translate that into an IP address.
1075: #
1076: my ($id,$domain,$role,$name,$maxcon,$idleto,$mincon) = split(/:/,$ConfigLine);
1077: #
1078: # Reassemble the config line from the elements in the list.
1079: # Note that if the loncnew items were not present before, they will
1080: # be now even if they would be empty
1081: #
1082: my $newConfigLine = $id;
1083: foreach my $item ($domain, $role, $name, $maxcon, $idleto, $mincon) {
1084: $newConfigLine .= ":".$item;
1085: }
1086: # Replace the line:
1087:
1088: $editor->ReplaceLine($id, $newConfigLine);
1089:
1090: }
1091: #
1092: # ReplaceConfigFile:
1093: # Replaces a configuration file with the contents of a
1094: # configuration file editor object.
1095: # This is done by:
1096: # - Copying the target file to <filename>.old
1097: # - Writing the new file to <filename>.tmp
1098: # - Moving <filename.tmp> -> <filename>
1099: # This laborious process ensures that the system is never without
1100: # a configuration file that's at least valid (even if the contents
1101: # may be dated).
1102: # Parameters:
1103: # filename - Name of the file to modify... this is a full path.
1104: # editor - Editor containing the file.
1105: #
1106: sub ReplaceConfigFile {
1107:
1108: my ($filename, $editor) = @_;
1109:
1110: CopyFile ($filename, $filename.".old");
1111:
1112: my $contents = $editor->Get(); # Get the contents of the file.
1113:
1114: InstallFile($filename, $contents);
1115: }
1116: #
1117: #
1118: # Called to edit a configuration table file
1119: # Parameters:
1120: # request - The entire command/request sent by lonc or lonManage
1121: # Return:
1122: # The reply to send to the client.
1123: #
1124: sub EditFile {
1125: my $request = shift;
1126:
1127: # Split the command into it's pieces: edit:filetype:script
1128:
1129: my ($cmd, $filetype, $script) = split(/:/, $request,3); # : in script
1130:
1131: # Check the pre-coditions for success:
1132:
1133: if($cmd != "edit") { # Something is amiss afoot alack.
1134: return "error:edit request detected, but request != 'edit'\n";
1135: }
1136: if( ($filetype ne "hosts") &&
1137: ($filetype ne "domain")) {
1138: return "error:edit requested with invalid file specifier: $filetype \n";
1139: }
1140:
1141: # Split the edit script and check it's validity.
1142:
1143: my @scriptlines = split(/\n/, $script); # one line per element.
1144: my $linecount = scalar(@scriptlines);
1145: for(my $i = 0; $i < $linecount; $i++) {
1146: chomp($scriptlines[$i]);
1147: if(!isValidEditCommand($scriptlines[$i])) {
1148: return "error:edit with bad script line: '$scriptlines[$i]' \n";
1149: }
1150: }
1151:
1152: # Execute the edit operation.
1153: # - Create a config file editor for the appropriate file and
1154: # - execute each command in the script:
1155: #
1156: my $configfile = ConfigFileFromSelector($filetype);
1157: if (!(defined $configfile)) {
1158: return "refused\n";
1159: }
1160: my $editor = ConfigFileEdit->new($configfile);
1161:
1162: for (my $i = 0; $i < $linecount; $i++) {
1163: ApplyEdit($scriptlines[$i], $editor);
1164: }
1165: # If the file is the host file, ensure that our host is
1166: # adjusted to have our ip:
1167: #
1168: if($filetype eq "host") {
1169: AdjustOurHost($editor);
1170: }
1171: # Finally replace the current file with our file.
1172: #
1173: ReplaceConfigFile($configfile, $editor);
1174:
1175: return "ok\n";
1176: }
1177:
1178: # read_profile
1179: #
1180: # Returns a set of specific entries from a user's profile file.
1181: # this is a utility function that is used by both get_profile_entry and
1182: # get_profile_entry_encrypted.
1183: #
1184: # Parameters:
1185: # udom - Domain in which the user exists.
1186: # uname - User's account name (loncapa account)
1187: # namespace - The profile namespace to open.
1188: # what - A set of & separated queries.
1189: # Returns:
1190: # If all ok: - The string that needs to be shipped back to the user.
1191: # If failure - A string that starts with error: followed by the failure
1192: # reason.. note that this probabyl gets shipped back to the
1193: # user as well.
1194: #
1195: sub read_profile {
1196: my ($udom, $uname, $namespace, $what) = @_;
1197:
1198: my $hashref = &tie_user_hash($udom, $uname, $namespace,
1199: &GDBM_READER());
1200: if ($hashref) {
1201: my @queries=split(/\&/,$what);
1202: if ($namespace eq 'roles') {
1203: @queries = map { &unescape($_); } @queries;
1204: }
1205: my $qresult='';
1206:
1207: for (my $i=0;$i<=$#queries;$i++) {
1208: $qresult.="$hashref->{$queries[$i]}&"; # Presumably failure gives empty string.
1209: }
1210: $qresult=~s/\&$//; # Remove trailing & from last lookup.
1211: if (&untie_user_hash($hashref)) {
1212: return $qresult;
1213: } else {
1214: return "error: ".($!+0)." untie (GDBM) Failed";
1215: }
1216: } else {
1217: if ($!+0 == 2) {
1218: return "error:No such file or GDBM reported bad block error";
1219: } else {
1220: return "error: ".($!+0)." tie (GDBM) Failed";
1221: }
1222: }
1223:
1224: }
1225: #--------------------- Request Handlers --------------------------------------------
1226: #
1227: # By convention each request handler registers itself prior to the sub
1228: # declaration:
1229: #
1230:
1231: #++
1232: #
1233: # Handles ping requests.
1234: # Parameters:
1235: # $cmd - the actual keyword that invoked us.
1236: # $tail - the tail of the request that invoked us.
1237: # $replyfd- File descriptor connected to the client
1238: # Implicit Inputs:
1239: # $currenthostid - Global variable that carries the name of the host we are
1240: # known as.
1241: # Returns:
1242: # 1 - Ok to continue processing.
1243: # 0 - Program should exit.
1244: # Side effects:
1245: # Reply information is sent to the client.
1246: sub ping_handler {
1247: my ($cmd, $tail, $client) = @_;
1248: Debug("$cmd $tail $client .. $currenthostid:");
1249:
1250: Reply( $client,\$currenthostid,"$cmd:$tail");
1251:
1252: return 1;
1253: }
1254: ®ister_handler("ping", \&ping_handler, 0, 1, 1); # Ping unencoded, client or manager.
1255:
1256: #++
1257: #
1258: # Handles pong requests. Pong replies with our current host id, and
1259: # the results of a ping sent to us via our lonc.
1260: #
1261: # Parameters:
1262: # $cmd - the actual keyword that invoked us.
1263: # $tail - the tail of the request that invoked us.
1264: # $replyfd- File descriptor connected to the client
1265: # Implicit Inputs:
1266: # $currenthostid - Global variable that carries the name of the host we are
1267: # connected to.
1268: # Returns:
1269: # 1 - Ok to continue processing.
1270: # 0 - Program should exit.
1271: # Side effects:
1272: # Reply information is sent to the client.
1273: sub pong_handler {
1274: my ($cmd, $tail, $replyfd) = @_;
1275:
1276: my $reply=&Apache::lonnet::reply("ping",$clientname);
1277: &Reply( $replyfd, "$currenthostid:$reply\n", "$cmd:$tail");
1278: return 1;
1279: }
1280: ®ister_handler("pong", \&pong_handler, 0, 1, 1); # Pong unencoded, client or manager
1281:
1282: #++
1283: # Called to establish an encrypted session key with the remote client.
1284: # Note that with secure lond, in most cases this function is never
1285: # invoked. Instead, the secure session key is established either
1286: # via a local file that's locked down tight and only lives for a short
1287: # time, or via an ssl tunnel...and is generated from a bunch-o-random
1288: # bits from /dev/urandom, rather than the predictable pattern used by
1289: # by this sub. This sub is only used in the old-style insecure
1290: # key negotiation.
1291: # Parameters:
1292: # $cmd - the actual keyword that invoked us.
1293: # $tail - the tail of the request that invoked us.
1294: # $replyfd- File descriptor connected to the client
1295: # Implicit Inputs:
1296: # $currenthostid - Global variable that carries the name of the host
1297: # known as.
1298: # $clientname - Global variable that carries the name of the host we're connected to.
1299: # Returns:
1300: # 1 - Ok to continue processing.
1301: # 0 - Program should exit.
1302: # Implicit Outputs:
1303: # Reply information is sent to the client.
1304: # $cipher is set with a reference to a new IDEA encryption object.
1305: #
1306: sub establish_key_handler {
1307: my ($cmd, $tail, $replyfd) = @_;
1308:
1309: my $buildkey=time.$$.int(rand 100000);
1310: $buildkey=~tr/1-6/A-F/;
1311: $buildkey=int(rand 100000).$buildkey.int(rand 100000);
1312: my $key=$currenthostid.$clientname;
1313: $key=~tr/a-z/A-Z/;
1314: $key=~tr/G-P/0-9/;
1315: $key=~tr/Q-Z/0-9/;
1316: $key=$key.$buildkey.$key.$buildkey.$key.$buildkey;
1317: $key=substr($key,0,32);
1318: my $cipherkey=pack("H32",$key);
1319: $cipher=new IDEA $cipherkey;
1320: &Reply($replyfd, \$buildkey, "$cmd:$tail");
1321:
1322: return 1;
1323:
1324: }
1325: ®ister_handler("ekey", \&establish_key_handler, 0, 1,1);
1326:
1327: # Handler for the load command. Returns the current system load average
1328: # to the requestor.
1329: #
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: # $clientname - Global variable that carries the name of the host we're connected to.
1338: # Returns:
1339: # 1 - Ok to continue processing.
1340: # 0 - Program should exit.
1341: # Side effects:
1342: # Reply information is sent to the client.
1343: sub load_handler {
1344: my ($cmd, $tail, $replyfd) = @_;
1345:
1346:
1347:
1348: # Get the load average from /proc/loadavg and calculate it as a percentage of
1349: # the allowed load limit as set by the perl global variable lonLoadLim
1350:
1351: my $loadavg;
1352: my $loadfile=IO::File->new('/proc/loadavg');
1353:
1354: $loadavg=<$loadfile>;
1355: $loadavg =~ s/\s.*//g; # Extract the first field only.
1356:
1357: my $loadpercent=100*$loadavg/$perlvar{'lonLoadLim'};
1358:
1359: &Reply( $replyfd, \$loadpercent, "$cmd:$tail");
1360:
1361: return 1;
1362: }
1363: ®ister_handler("load", \&load_handler, 0, 1, 0);
1364:
1365: #
1366: # Process the userload request. This sub returns to the client the current
1367: # user load average. It can be invoked either by clients or managers.
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: # $clientname - Global variable that carries the name of the host we're connected to.
1377: # Returns:
1378: # 1 - Ok to continue processing.
1379: # 0 - Program should exit
1380: # Implicit inputs:
1381: # whatever the userload() function requires.
1382: # Implicit outputs:
1383: # the reply is written to the client.
1384: #
1385: sub user_load_handler {
1386: my ($cmd, $tail, $replyfd) = @_;
1387:
1388: my $userloadpercent=&Apache::lonnet::userload();
1389: &Reply($replyfd, \$userloadpercent, "$cmd:$tail");
1390:
1391: return 1;
1392: }
1393: ®ister_handler("userload", \&user_load_handler, 0, 1, 0);
1394:
1395: # Process a request for the authorization type of a user:
1396: # (userauth).
1397: #
1398: # Parameters:
1399: # $cmd - the actual keyword that invoked us.
1400: # $tail - the tail of the request that invoked us.
1401: # $replyfd- File descriptor connected to the client
1402: # Returns:
1403: # 1 - Ok to continue processing.
1404: # 0 - Program should exit
1405: # Implicit outputs:
1406: # The user authorization type is written to the client.
1407: #
1408: sub user_authorization_type {
1409: my ($cmd, $tail, $replyfd) = @_;
1410:
1411: my $userinput = "$cmd:$tail";
1412:
1413: # Pull the domain and username out of the command tail.
1414: # and call get_auth_type to determine the authentication type.
1415:
1416: my ($udom,$uname)=split(/:/,$tail);
1417: my $result = &get_auth_type($udom, $uname);
1418: if($result eq "nouser") {
1419: &Failure( $replyfd, "unknown_user\n", $userinput);
1420: } else {
1421: #
1422: # We only want to pass the second field from get_auth_type
1423: # for ^krb.. otherwise we'll be handing out the encrypted
1424: # password for internals e.g.
1425: #
1426: my ($type,$otherinfo) = split(/:/,$result);
1427: if($type =~ /^krb/) {
1428: $type = $result;
1429: } else {
1430: $type .= ':';
1431: }
1432: &Reply( $replyfd, \$type, $userinput);
1433: }
1434:
1435: return 1;
1436: }
1437: ®ister_handler("currentauth", \&user_authorization_type, 1, 1, 0);
1438:
1439: # Process a request by a manager to push a hosts or domain table
1440: # to us. We pick apart the command and pass it on to the subs
1441: # that already exist to do this.
1442: #
1443: # Parameters:
1444: # $cmd - the actual keyword that invoked us.
1445: # $tail - the tail of the request that invoked us.
1446: # $client - File descriptor connected to the client
1447: # Returns:
1448: # 1 - Ok to continue processing.
1449: # 0 - Program should exit
1450: # Implicit Output:
1451: # a reply is written to the client.
1452: sub push_file_handler {
1453: my ($cmd, $tail, $client) = @_;
1454: &Debug("In push file handler");
1455: my $userinput = "$cmd:$tail";
1456:
1457: # At this time we only know that the IP of our partner is a valid manager
1458: # the code below is a hook to do further authentication (e.g. to resolve
1459: # spoofing).
1460:
1461: my $cert = &GetCertificate($userinput);
1462: if(&ValidManager($cert)) {
1463: &Debug("Valid manager: $client");
1464:
1465: # Now presumably we have the bona fides of both the peer host and the
1466: # process making the request.
1467:
1468: my $reply = &PushFile($userinput);
1469: &Reply($client, \$reply, $userinput);
1470:
1471: } else {
1472: &logthis("push_file_handler $client is not valid");
1473: &Failure( $client, "refused\n", $userinput);
1474: }
1475: return 1;
1476: }
1477: ®ister_handler("pushfile", \&push_file_handler, 1, 0, 1);
1478:
1479: # The du_handler routine should be considered obsolete and is retained
1480: # for communication with legacy servers. Please see the du2_handler.
1481: #
1482: # du - list the disk usage of a directory recursively.
1483: #
1484: # note: stolen code from the ls file handler
1485: # under construction by Rick Banghart
1486: # .
1487: # Parameters:
1488: # $cmd - The command that dispatched us (du).
1489: # $ududir - The directory path to list... I'm not sure what this
1490: # is relative as things like ls:. return e.g.
1491: # no_such_dir.
1492: # $client - Socket open on the client.
1493: # Returns:
1494: # 1 - indicating that the daemon should not disconnect.
1495: # Side Effects:
1496: # The reply is written to $client.
1497: #
1498: sub du_handler {
1499: my ($cmd, $ududir, $client) = @_;
1500: ($ududir) = split(/:/,$ududir); # Make 'telnet' testing easier.
1501: my $userinput = "$cmd:$ududir";
1502:
1503: if ($ududir=~/\.\./ || $ududir!~m|^/home/httpd/|) {
1504: &Failure($client,"refused\n","$cmd:$ududir");
1505: return 1;
1506: }
1507: # Since $ududir could have some nasties in it,
1508: # we will require that ududir is a valid
1509: # directory. Just in case someone tries to
1510: # slip us a line like .;(cd /home/httpd rm -rf*)
1511: # etc.
1512: #
1513: if (-d $ududir) {
1514: my $total_size=0;
1515: my $code=sub {
1516: if ($_=~/\.\d+\./) { return;}
1517: if ($_=~/\.meta$/) { return;}
1518: if (-d $_) { return;}
1519: $total_size+=(stat($_))[7];
1520: };
1521: chdir($ududir);
1522: find($code,$ududir);
1523: $total_size=int($total_size/1024);
1524: &Reply($client,\$total_size,"$cmd:$ududir");
1525: } else {
1526: &Failure($client, "bad_directory:$ududir\n","$cmd:$ududir");
1527: }
1528: return 1;
1529: }
1530: ®ister_handler("du", \&du_handler, 0, 1, 0);
1531:
1532: # Please also see the du_handler, which is obsoleted by du2.
1533: # du2_handler differs from du_handler in that required path to directory
1534: # provided by &propath() is prepended in the handler instead of on the
1535: # client side.
1536: #
1537: # du2 - list the disk usage of a directory recursively.
1538: #
1539: # Parameters:
1540: # $cmd - The command that dispatched us (du).
1541: # $tail - The tail of the request that invoked us.
1542: # $tail is a : separated list of the following:
1543: # - $ududir - directory path to list (before prepending)
1544: # - $getpropath = 1 if &propath() should prepend
1545: # - $uname - username to use for &propath or user dir
1546: # - $udom - domain to use for &propath or user dir
1547: # All are escaped.
1548: # $client - Socket open on the client.
1549: # Returns:
1550: # 1 - indicating that the daemon should not disconnect.
1551: # Side Effects:
1552: # The reply is written to $client.
1553: #
1554:
1555: sub du2_handler {
1556: my ($cmd, $tail, $client) = @_;
1557: my ($ududir,$getpropath,$uname,$udom) = map { &unescape($_) } (split(/:/, $tail));
1558: my $userinput = "$cmd:$tail";
1559: if (($ududir=~/\.\./) || (($ududir!~m|^/home/httpd/|) && (!$getpropath))) {
1560: &Failure($client,"refused\n","$cmd:$tail");
1561: return 1;
1562: }
1563: if ($getpropath) {
1564: if (($uname =~ /^$LONCAPA::match_name$/) && ($udom =~ /^$LONCAPA::match_domain$/)) {
1565: $ududir = &propath($udom,$uname).'/'.$ududir;
1566: } else {
1567: &Failure($client,"refused\n","$cmd:$tail");
1568: return 1;
1569: }
1570: }
1571: # Since $ududir could have some nasties in it,
1572: # we will require that ududir is a valid
1573: # directory. Just in case someone tries to
1574: # slip us a line like .;(cd /home/httpd rm -rf*)
1575: # etc.
1576: #
1577: if (-d $ududir) {
1578: my $total_size=0;
1579: my $code=sub {
1580: if ($_=~/\.\d+\./) { return;}
1581: if ($_=~/\.meta$/) { return;}
1582: if (-d $_) { return;}
1583: $total_size+=(stat($_))[7];
1584: };
1585: chdir($ududir);
1586: find($code,$ududir);
1587: $total_size=int($total_size/1024);
1588: &Reply($client,\$total_size,"$cmd:$ududir");
1589: } else {
1590: &Failure($client, "bad_directory:$ududir\n","$cmd:$tail");
1591: }
1592: return 1;
1593: }
1594: ®ister_handler("du2", \&du2_handler, 0, 1, 0);
1595:
1596: #
1597: # The ls_handler routine should be considered obsolete and is retained
1598: # for communication with legacy servers. Please see the ls3_handler.
1599: #
1600: # ls - list the contents of a directory. For each file in the
1601: # selected directory the filename followed by the full output of
1602: # the stat function is returned. The returned info for each
1603: # file are separated by ':'. The stat fields are separated by &'s.
1604: #
1605: # If the requested path contains /../ or is:
1606: #
1607: # 1. for a directory, and the path does not begin with one of:
1608: # (a) /home/httpd/html/res/<domain>
1609: # (b) /home/httpd/html/userfiles/
1610: # (c) /home/httpd/lonUsers/<domain>/<1>/<2>/<3>/<username>/userfiles
1611: # or is:
1612: #
1613: # 2. for a file, and the path (after prepending) does not begin with one of:
1614: # (a) /home/httpd/lonUsers/<domain>/<1>/<2>/<3>/<username>/
1615: # (b) /home/httpd/html/res/<domain>/<username>/
1616: # (c) /home/httpd/html/userfiles/<domain>/<username>/
1617: #
1618: # the response will be "refused".
1619: #
1620: # Parameters:
1621: # $cmd - The command that dispatched us (ls).
1622: # $ulsdir - The directory path to list... I'm not sure what this
1623: # is relative as things like ls:. return e.g.
1624: # no_such_dir.
1625: # $client - Socket open on the client.
1626: # Returns:
1627: # 1 - indicating that the daemon should not disconnect.
1628: # Side Effects:
1629: # The reply is written to $client.
1630: #
1631: sub ls_handler {
1632: # obsoleted by ls2_handler
1633: my ($cmd, $ulsdir, $client) = @_;
1634:
1635: my $userinput = "$cmd:$ulsdir";
1636:
1637: my $obs;
1638: my $rights;
1639: my $ulsout='';
1640: my $ulsfn;
1641: if ($ulsdir =~m{/\.\./}) {
1642: &Failure($client,"refused\n",$userinput);
1643: return 1;
1644: }
1645: if (-e $ulsdir) {
1646: if(-d $ulsdir) {
1647: unless (($ulsdir =~ m{^/home/httpd/html/(res/$LONCAPA::match_domain|userfiles/)}) ||
1648: ($ulsdir =~ m{^/home/httpd/lonUsers/$LONCAPA::match_domain(?:/[\w\-.@]){3}/$LONCAPA::match_name/userfiles})) {
1649: &Failure($client,"refused\n",$userinput);
1650: return 1;
1651: }
1652: if (opendir(LSDIR,$ulsdir)) {
1653: while ($ulsfn=readdir(LSDIR)) {
1654: undef($obs);
1655: undef($rights);
1656: my @ulsstats=stat($ulsdir.'/'.$ulsfn);
1657: #We do some obsolete checking here
1658: if(-e $ulsdir.'/'.$ulsfn.".meta") {
1659: open(FILE, $ulsdir.'/'.$ulsfn.".meta");
1660: my @obsolete=<FILE>;
1661: foreach my $obsolete (@obsolete) {
1662: if($obsolete =~ m/(<obsolete>)(on|1)/) { $obs = 1; }
1663: if($obsolete =~ m|(<copyright>)(default)|) { $rights = 1; }
1664: }
1665: }
1666: $ulsout.=$ulsfn.'&'.join('&',@ulsstats);
1667: if($obs eq '1') { $ulsout.="&1"; }
1668: else { $ulsout.="&0"; }
1669: if($rights eq '1') { $ulsout.="&1:"; }
1670: else { $ulsout.="&0:"; }
1671: }
1672: closedir(LSDIR);
1673: }
1674: } else {
1675: unless (($ulsdir =~ m{^/home/httpd/lonUsers/$LONCAPA::match_domain(?:/[\w\-.@]){3}/$LONCAPA::match_name/}) ||
1676: ($ulsdir =~ m{^/home/httpd/html/(?:res|userfiles)/$LONCAPA::match_domain/$LONCAPA::match_name/})) {
1677: &Failure($client,"refused\n",$userinput);
1678: return 1;
1679: }
1680: my @ulsstats=stat($ulsdir);
1681: $ulsout.=$ulsfn.'&'.join('&',@ulsstats).':';
1682: }
1683: } else {
1684: $ulsout='no_such_dir';
1685: }
1686: if ($ulsout eq '') { $ulsout='empty'; }
1687: &Reply($client, \$ulsout, $userinput); # This supports debug logging.
1688:
1689: return 1;
1690:
1691: }
1692: ®ister_handler("ls", \&ls_handler, 0, 1, 0);
1693:
1694: # The ls2_handler routine should be considered obsolete and is retained
1695: # for communication with legacy servers. Please see the ls3_handler.
1696: # Please also see the ls_handler, which was itself obsoleted by ls2.
1697: # ls2_handler differs from ls_handler in that it escapes its return
1698: # values before concatenating them together with ':'s.
1699: #
1700: # ls2 - list the contents of a directory. For each file in the
1701: # selected directory the filename followed by the full output of
1702: # the stat function is returned. The returned info for each
1703: # file are separated by ':'. The stat fields are separated by &'s.
1704: #
1705: # If the requested path contains /../ or is:
1706: #
1707: # 1. for a directory, and the path does not begin with one of:
1708: # (a) /home/httpd/html/res/<domain>
1709: # (b) /home/httpd/html/userfiles/
1710: # (c) /home/httpd/lonUsers/<domain>/<1>/<2>/<3>/<username>/userfiles
1711: # or is:
1712: #
1713: # 2. for a file, and the path (after prepending) does not begin with one of:
1714: # (a) /home/httpd/lonUsers/<domain>/<1>/<2>/<3>/<username>/
1715: # (b) /home/httpd/html/res/<domain>/<username>/
1716: # (c) /home/httpd/html/userfiles/<domain>/<username>/
1717: #
1718: # the response will be "refused".
1719: #
1720: # Parameters:
1721: # $cmd - The command that dispatched us (ls).
1722: # $ulsdir - The directory path to list... I'm not sure what this
1723: # is relative as things like ls:. return e.g.
1724: # no_such_dir.
1725: # $client - Socket open on the client.
1726: # Returns:
1727: # 1 - indicating that the daemon should not disconnect.
1728: # Side Effects:
1729: # The reply is written to $client.
1730: #
1731: sub ls2_handler {
1732: my ($cmd, $ulsdir, $client) = @_;
1733:
1734: my $userinput = "$cmd:$ulsdir";
1735:
1736: my $obs;
1737: my $rights;
1738: my $ulsout='';
1739: my $ulsfn;
1740: if ($ulsdir =~m{/\.\./}) {
1741: &Failure($client,"refused\n",$userinput);
1742: return 1;
1743: }
1744: if (-e $ulsdir) {
1745: if(-d $ulsdir) {
1746: unless (($ulsdir =~ m{^/home/httpd/html/(res/$LONCAPA::match_domain|userfiles/)}) ||
1747: ($ulsdir =~ m{^/home/httpd/lonUsers/$LONCAPA::match_domain(?:/[\w\-.@]){3}/$LONCAPA::match_name/userfiles})) {
1748: &Failure($client,"refused\n","$userinput");
1749: return 1;
1750: }
1751: if (opendir(LSDIR,$ulsdir)) {
1752: while ($ulsfn=readdir(LSDIR)) {
1753: undef($obs);
1754: undef($rights);
1755: my @ulsstats=stat($ulsdir.'/'.$ulsfn);
1756: #We do some obsolete checking here
1757: if(-e $ulsdir.'/'.$ulsfn.".meta") {
1758: open(FILE, $ulsdir.'/'.$ulsfn.".meta");
1759: my @obsolete=<FILE>;
1760: foreach my $obsolete (@obsolete) {
1761: if($obsolete =~ m/(<obsolete>)(on|1)/) { $obs = 1; }
1762: if($obsolete =~ m|(<copyright>)(default)|) {
1763: $rights = 1;
1764: }
1765: }
1766: }
1767: my $tmp = $ulsfn.'&'.join('&',@ulsstats);
1768: if ($obs eq '1') { $tmp.="&1"; } else { $tmp.="&0"; }
1769: if ($rights eq '1') { $tmp.="&1"; } else { $tmp.="&0"; }
1770: $ulsout.= &escape($tmp).':';
1771: }
1772: closedir(LSDIR);
1773: }
1774: } else {
1775: unless (($ulsdir =~ m{^/home/httpd/lonUsers/$LONCAPA::match_domain(?:/[\w\-.@]){3}/$LONCAPA::match_name/}) ||
1776: ($ulsdir =~ m{^/home/httpd/html/(?:res|userfiles)/$LONCAPA::match_domain/$LONCAPA::match_name/})) {
1777: &Failure($client,"refused\n",$userinput);
1778: return 1;
1779: }
1780: my @ulsstats=stat($ulsdir);
1781: $ulsout.=$ulsfn.'&'.join('&',@ulsstats).':';
1782: }
1783: } else {
1784: $ulsout='no_such_dir';
1785: }
1786: if ($ulsout eq '') { $ulsout='empty'; }
1787: &Reply($client, \$ulsout, $userinput); # This supports debug logging.
1788: return 1;
1789: }
1790: ®ister_handler("ls2", \&ls2_handler, 0, 1, 0);
1791: #
1792: # ls3 - list the contents of a directory. For each file in the
1793: # selected directory the filename followed by the full output of
1794: # the stat function is returned. The returned info for each
1795: # file are separated by ':'. The stat fields are separated by &'s.
1796: #
1797: # If the requested path (after prepending) contains /../ or is:
1798: #
1799: # 1. for a directory, and the path does not begin with one of:
1800: # (a) /home/httpd/html/res/<domain>
1801: # (b) /home/httpd/html/userfiles/
1802: # (c) /home/httpd/lonUsers/<domain>/<1>/<2>/<3>/<username>/userfiles
1803: # (d) /home/httpd/html/priv/<domain> and client is the homeserver
1804: #
1805: # or is:
1806: #
1807: # 2. for a file, and the path (after prepending) does not begin with one of:
1808: # (a) /home/httpd/lonUsers/<domain>/<1>/<2>/<3>/<username>/
1809: # (b) /home/httpd/html/res/<domain>/<username>/
1810: # (c) /home/httpd/html/userfiles/<domain>/<username>/
1811: # (d) /home/httpd/html/priv/<domain>/<username>/ and client is the homeserver
1812: #
1813: # the response will be "refused".
1814: #
1815: # Parameters:
1816: # $cmd - The command that dispatched us (ls).
1817: # $tail - The tail of the request that invoked us.
1818: # $tail is a : separated list of the following:
1819: # - $ulsdir - directory path to list (before prepending)
1820: # - $getpropath = 1 if &propath() should prepend
1821: # - $getuserdir = 1 if path to user dir in lonUsers should
1822: # prepend
1823: # - $alternate_root - path to prepend
1824: # - $uname - username to use for &propath or user dir
1825: # - $udom - domain to use for &propath or user dir
1826: # All of these except $getpropath and &getuserdir are escaped.
1827: # no_such_dir.
1828: # $client - Socket open on the client.
1829: # Returns:
1830: # 1 - indicating that the daemon should not disconnect.
1831: # Side Effects:
1832: # The reply is written to $client.
1833: #
1834:
1835: sub ls3_handler {
1836: my ($cmd, $tail, $client) = @_;
1837: my $userinput = "$cmd:$tail";
1838: my ($ulsdir,$getpropath,$getuserdir,$alternate_root,$uname,$udom) =
1839: split(/:/,$tail);
1840: if (defined($ulsdir)) {
1841: $ulsdir = &unescape($ulsdir);
1842: }
1843: if (defined($alternate_root)) {
1844: $alternate_root = &unescape($alternate_root);
1845: }
1846: if (defined($uname)) {
1847: $uname = &unescape($uname);
1848: }
1849: if (defined($udom)) {
1850: $udom = &unescape($udom);
1851: }
1852:
1853: my $dir_root = $perlvar{'lonDocRoot'};
1854: if (($getpropath) || ($getuserdir)) {
1855: if (($uname =~ /^$LONCAPA::match_name$/) && ($udom =~ /^$LONCAPA::match_domain$/)) {
1856: $dir_root = &propath($udom,$uname);
1857: $dir_root =~ s/\/$//;
1858: } else {
1859: &Failure($client,"refused\n",$userinput);
1860: return 1;
1861: }
1862: } elsif ($alternate_root ne '') {
1863: $dir_root = $alternate_root;
1864: }
1865: if (($dir_root ne '') && ($dir_root ne '/')) {
1866: if ($ulsdir =~ /^\//) {
1867: $ulsdir = $dir_root.$ulsdir;
1868: } else {
1869: $ulsdir = $dir_root.'/'.$ulsdir;
1870: }
1871: }
1872: if ($ulsdir =~m{/\.\./}) {
1873: &Failure($client,"refused\n",$userinput);
1874: return 1;
1875: }
1876: my $islocal;
1877: my @machine_ids = &Apache::lonnet::current_machine_ids();
1878: if (grep(/^\Q$clientname\E$/,@machine_ids)) {
1879: $islocal = 1;
1880: }
1881: my $obs;
1882: my $rights;
1883: my $ulsout='';
1884: my $ulsfn;
1885: if (-e $ulsdir) {
1886: if(-d $ulsdir) {
1887: unless (($getpropath) || ($getuserdir) ||
1888: ($ulsdir =~ m{^/home/httpd/html/(res/$LONCAPA::match_domain|userfiles/)}) ||
1889: ($ulsdir =~ m{^/home/httpd/lonUsers/$LONCAPA::match_domain(?:/[\w\-.@]){3}/$LONCAPA::match_name/userfiles}) ||
1890: (($ulsdir =~ m{^/home/httpd/html/priv/$LONCAPA::match_domain}) && ($islocal))) {
1891: &Failure($client,"refused\n",$userinput);
1892: return 1;
1893: }
1894: if (opendir(LSDIR,$ulsdir)) {
1895: while ($ulsfn=readdir(LSDIR)) {
1896: undef($obs);
1897: undef($rights);
1898: my @ulsstats=stat($ulsdir.'/'.$ulsfn);
1899: #We do some obsolete checking here
1900: if(-e $ulsdir.'/'.$ulsfn.".meta") {
1901: open(FILE, $ulsdir.'/'.$ulsfn.".meta");
1902: my @obsolete=<FILE>;
1903: foreach my $obsolete (@obsolete) {
1904: if($obsolete =~ m/(<obsolete>)(on|1)/) { $obs = 1; }
1905: if($obsolete =~ m|(<copyright>)(default)|) {
1906: $rights = 1;
1907: }
1908: }
1909: }
1910: my $tmp = $ulsfn.'&'.join('&',@ulsstats);
1911: if ($obs eq '1') { $tmp.="&1"; } else { $tmp.="&0"; }
1912: if ($rights eq '1') { $tmp.="&1"; } else { $tmp.="&0"; }
1913: $ulsout.= &escape($tmp).':';
1914: }
1915: closedir(LSDIR);
1916: }
1917: } else {
1918: unless (($getpropath) || ($getuserdir) ||
1919: ($ulsdir =~ m{^/home/httpd/lonUsers/$LONCAPA::match_domain(?:/[\w\-.@]){3}/$LONCAPA::match_name/}) ||
1920: ($ulsdir =~ m{^/home/httpd/html/(?:res|userfiles)/$LONCAPA::match_domain/$LONCAPA::match_name/}) ||
1921: (($ulsdir =~ m{^/home/httpd/html/priv/$LONCAPA::match_domain/$LONCAPA::match_name/}) && ($islocal))) {
1922: &Failure($client,"refused\n",$userinput);
1923: return 1;
1924: }
1925: my @ulsstats=stat($ulsdir);
1926: $ulsout.=$ulsfn.'&'.join('&',@ulsstats).':';
1927: }
1928: } else {
1929: $ulsout='no_such_dir';
1930: }
1931: if ($ulsout eq '') { $ulsout='empty'; }
1932: &Reply($client, \$ulsout, $userinput); # This supports debug logging.
1933: return 1;
1934: }
1935: ®ister_handler("ls3", \&ls3_handler, 0, 1, 0);
1936:
1937: sub read_lonnet_global {
1938: my ($cmd,$tail,$client) = @_;
1939: my $userinput = "$cmd:$tail";
1940: my $requested = &Apache::lonnet::thaw_unescape($tail);
1941: my $result;
1942: my %packagevars = (
1943: spareid => \%Apache::lonnet::spareid,
1944: perlvar => \%Apache::lonnet::perlvar,
1945: );
1946: my %limit_to = (
1947: perlvar => {
1948: lonOtherAuthen => 1,
1949: lonBalancer => 1,
1950: lonVersion => 1,
1951: lonAdmEMail => 1,
1952: lonSupportEMail => 1,
1953: lonSysEMail => 1,
1954: lonHostID => 1,
1955: lonRole => 1,
1956: lonDefDomain => 1,
1957: lonLoadLim => 1,
1958: lonUserLoadLim => 1,
1959: }
1960: );
1961: if (ref($requested) eq 'HASH') {
1962: foreach my $what (keys(%{$requested})) {
1963: my $response;
1964: my $items = {};
1965: if (exists($packagevars{$what})) {
1966: if (ref($limit_to{$what}) eq 'HASH') {
1967: foreach my $varname (keys(%{$packagevars{$what}})) {
1968: if ($limit_to{$what}{$varname}) {
1969: $items->{$varname} = $packagevars{$what}{$varname};
1970: }
1971: }
1972: } else {
1973: $items = $packagevars{$what};
1974: }
1975: if ($what eq 'perlvar') {
1976: if (!exists($packagevars{$what}{'lonBalancer'})) {
1977: if ($dist =~ /^(centos|rhes|fedora|scientific)/) {
1978: my $othervarref=LONCAPA::Configuration::read_conf('httpd.conf');
1979: if (ref($othervarref) eq 'HASH') {
1980: $items->{'lonBalancer'} = $othervarref->{'lonBalancer'};
1981: }
1982: }
1983: }
1984: }
1985: $response = &Apache::lonnet::freeze_escape($items);
1986: }
1987: $result .= &escape($what).'='.$response.'&';
1988: }
1989: }
1990: $result =~ s/\&$//;
1991: &Reply($client,\$result,$userinput);
1992: return 1;
1993: }
1994: ®ister_handler("readlonnetglobal", \&read_lonnet_global, 0, 1, 0);
1995:
1996: sub server_devalidatecache_handler {
1997: my ($cmd,$tail,$client) = @_;
1998: my $userinput = "$cmd:$tail";
1999: my $items = &unescape($tail);
2000: my @cached = split(/\&/,$items);
2001: foreach my $key (@cached) {
2002: if ($key =~ /:/) {
2003: my ($name,$id) = map { &unescape($_); } split(/:/,$key);
2004: &Apache::lonnet::devalidate_cache_new($name,$id);
2005: }
2006: }
2007: my $result = 'ok';
2008: &Reply($client,\$result,$userinput);
2009: return 1;
2010: }
2011: ®ister_handler("devalidatecache", \&server_devalidatecache_handler, 0, 1, 0);
2012:
2013: sub server_timezone_handler {
2014: my ($cmd,$tail,$client) = @_;
2015: my $userinput = "$cmd:$tail";
2016: my $timezone;
2017: my $clockfile = '/etc/sysconfig/clock'; # Fedora/CentOS/SuSE
2018: my $tzfile = '/etc/timezone'; # Debian/Ubuntu
2019: if (-e $clockfile) {
2020: if (open(my $fh,"<$clockfile")) {
2021: while (<$fh>) {
2022: next if (/^[\#\s]/);
2023: if (/^(?:TIME)?ZONE\s*=\s*['"]?\s*([\w\/]+)/) {
2024: $timezone = $1;
2025: last;
2026: }
2027: }
2028: close($fh);
2029: }
2030: } elsif (-e $tzfile) {
2031: if (open(my $fh,"<$tzfile")) {
2032: $timezone = <$fh>;
2033: close($fh);
2034: chomp($timezone);
2035: if ($timezone =~ m{^Etc/(\w+)$}) {
2036: $timezone = $1;
2037: }
2038: }
2039: }
2040: &Reply($client,\$timezone,$userinput); # This supports debug logging.
2041: return 1;
2042: }
2043: ®ister_handler("servertimezone", \&server_timezone_handler, 0, 1, 0);
2044:
2045: sub server_loncaparev_handler {
2046: my ($cmd,$tail,$client) = @_;
2047: my $userinput = "$cmd:$tail";
2048: &Reply($client,\$perlvar{'lonVersion'},$userinput);
2049: return 1;
2050: }
2051: ®ister_handler("serverloncaparev", \&server_loncaparev_handler, 0, 1, 0);
2052:
2053: sub server_homeID_handler {
2054: my ($cmd,$tail,$client) = @_;
2055: my $userinput = "$cmd:$tail";
2056: &Reply($client,\$perlvar{'lonHostID'},$userinput);
2057: return 1;
2058: }
2059: ®ister_handler("serverhomeID", \&server_homeID_handler, 0, 1, 0);
2060:
2061: sub server_distarch_handler {
2062: my ($cmd,$tail,$client) = @_;
2063: my $userinput = "$cmd:$tail";
2064: my $reply = &distro_and_arch();
2065: &Reply($client,\$reply,$userinput);
2066: return 1;
2067: }
2068: ®ister_handler("serverdistarch", \&server_distarch_handler, 0, 1, 0);
2069:
2070: sub server_certs_handler {
2071: my ($cmd,$tail,$client) = @_;
2072: my $userinput = "$cmd:$tail";
2073: my $result;
2074: my $result = &LONCAPA::Lond::server_certs(\%perlvar);
2075: &Reply($client,\$result,$userinput);
2076: return;
2077: }
2078: ®ister_handler("servercerts", \&server_certs_handler, 0, 1, 0);
2079:
2080: # Process a reinit request. Reinit requests that either
2081: # lonc or lond be reinitialized so that an updated
2082: # host.tab or domain.tab can be processed.
2083: #
2084: # Parameters:
2085: # $cmd - the actual keyword that invoked us.
2086: # $tail - the tail of the request that invoked us.
2087: # $client - File descriptor connected to the client
2088: # Returns:
2089: # 1 - Ok to continue processing.
2090: # 0 - Program should exit
2091: # Implicit output:
2092: # a reply is sent to the client.
2093: #
2094: sub reinit_process_handler {
2095: my ($cmd, $tail, $client) = @_;
2096:
2097: my $userinput = "$cmd:$tail";
2098:
2099: my $cert = &GetCertificate($userinput);
2100: if(&ValidManager($cert)) {
2101: chomp($userinput);
2102: my $reply = &ReinitProcess($userinput);
2103: &Reply( $client, \$reply, $userinput);
2104: } else {
2105: &Failure( $client, "refused\n", $userinput);
2106: }
2107: return 1;
2108: }
2109: ®ister_handler("reinit", \&reinit_process_handler, 1, 0, 1);
2110:
2111: # Process the editing script for a table edit operation.
2112: # the editing operation must be encrypted and requested by
2113: # a manager host.
2114: #
2115: # Parameters:
2116: # $cmd - the actual keyword that invoked us.
2117: # $tail - the tail of the request that invoked us.
2118: # $client - File descriptor connected to the client
2119: # Returns:
2120: # 1 - Ok to continue processing.
2121: # 0 - Program should exit
2122: # Implicit output:
2123: # a reply is sent to the client.
2124: #
2125: sub edit_table_handler {
2126: my ($command, $tail, $client) = @_;
2127:
2128: my $userinput = "$command:$tail";
2129:
2130: my $cert = &GetCertificate($userinput);
2131: if(&ValidManager($cert)) {
2132: my($filetype, $script) = split(/:/, $tail);
2133: if (($filetype eq "hosts") ||
2134: ($filetype eq "domain")) {
2135: if($script ne "") {
2136: &Reply($client, # BUGBUG - EditFile
2137: &EditFile($userinput), # could fail.
2138: $userinput);
2139: } else {
2140: &Failure($client,"refused\n",$userinput);
2141: }
2142: } else {
2143: &Failure($client,"refused\n",$userinput);
2144: }
2145: } else {
2146: &Failure($client,"refused\n",$userinput);
2147: }
2148: return 1;
2149: }
2150: ®ister_handler("edit", \&edit_table_handler, 1, 0, 1);
2151:
2152: #
2153: # Authenticate a user against the LonCAPA authentication
2154: # database. Note that there are several authentication
2155: # possibilities:
2156: # - unix - The user can be authenticated against the unix
2157: # password file.
2158: # - internal - The user can be authenticated against a purely
2159: # internal per user password file.
2160: # - kerberos - The user can be authenticated against either a kerb4 or kerb5
2161: # ticket granting authority.
2162: # - user - The person tailoring LonCAPA can supply a user authentication
2163: # mechanism that is per system.
2164: #
2165: # Parameters:
2166: # $cmd - The command that got us here.
2167: # $tail - Tail of the command (remaining parameters).
2168: # $client - File descriptor connected to client.
2169: # Returns
2170: # 0 - Requested to exit, caller should shut down.
2171: # 1 - Continue processing.
2172: # Implicit inputs:
2173: # The authentication systems describe above have their own forms of implicit
2174: # input into the authentication process that are described above.
2175: #
2176: sub authenticate_handler {
2177: my ($cmd, $tail, $client) = @_;
2178:
2179:
2180: # Regenerate the full input line
2181:
2182: my $userinput = $cmd.":".$tail;
2183:
2184: # udom - User's domain.
2185: # uname - Username.
2186: # upass - User's password.
2187: # checkdefauth - Pass to validate_user() to try authentication
2188: # with default auth type(s) if no user account.
2189: # clientcancheckhost - Passed by clients with functionality in lonauth.pm
2190: # to check if session can be hosted.
2191:
2192: my ($udom, $uname, $upass, $checkdefauth, $clientcancheckhost)=split(/:/,$tail);
2193: &Debug(" Authenticate domain = $udom, user = $uname, password = $upass, checkdefauth = $checkdefauth");
2194: chomp($upass);
2195: $upass=&unescape($upass);
2196:
2197: my $pwdcorrect = &validate_user($udom,$uname,$upass,$checkdefauth);
2198: if($pwdcorrect) {
2199: my $canhost = 1;
2200: unless ($clientcancheckhost) {
2201: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
2202: my $uint_dom = &Apache::lonnet::internet_dom($uprimary_id);
2203: my @intdoms;
2204: my $internet_names = &Apache::lonnet::get_internet_names($clientname);
2205: if (ref($internet_names) eq 'ARRAY') {
2206: @intdoms = @{$internet_names};
2207: }
2208: unless ($uint_dom ne '' && grep(/^\Q$uint_dom\E$/,@intdoms)) {
2209: my ($remote,$hosted);
2210: my $remotesession = &get_usersession_config($udom,'remotesession');
2211: if (ref($remotesession) eq 'HASH') {
2212: $remote = $remotesession->{'remote'};
2213: }
2214: my $hostedsession = &get_usersession_config($clienthomedom,'hostedsession');
2215: if (ref($hostedsession) eq 'HASH') {
2216: $hosted = $hostedsession->{'hosted'};
2217: }
2218: $canhost = &Apache::lonnet::can_host_session($udom,$clientname,
2219: $clientversion,
2220: $remote,$hosted);
2221: }
2222: }
2223: if ($canhost) {
2224: &Reply( $client, "authorized\n", $userinput);
2225: } else {
2226: &Reply( $client, "not_allowed_to_host\n", $userinput);
2227: }
2228: #
2229: # Bad credentials: Failed to authorize
2230: #
2231: } else {
2232: &Failure( $client, "non_authorized\n", $userinput);
2233: }
2234:
2235: return 1;
2236: }
2237: ®ister_handler("auth", \&authenticate_handler, 1, 1, 0);
2238:
2239: #
2240: # Change a user's password. Note that this function is complicated by
2241: # the fact that a user may be authenticated in more than one way:
2242: # At present, we are not able to change the password for all types of
2243: # authentication methods. Only for:
2244: # unix - unix password or shadow passoword style authentication.
2245: # local - Locally written authentication mechanism.
2246: # For now, kerb4 and kerb5 password changes are not supported and result
2247: # in an error.
2248: # FUTURE WORK:
2249: # Support kerberos passwd changes?
2250: # Parameters:
2251: # $cmd - The command that got us here.
2252: # $tail - Tail of the command (remaining parameters).
2253: # $client - File descriptor connected to client.
2254: # Returns
2255: # 0 - Requested to exit, caller should shut down.
2256: # 1 - Continue processing.
2257: # Implicit inputs:
2258: # The authentication systems describe above have their own forms of implicit
2259: # input into the authentication process that are described above.
2260: sub change_password_handler {
2261: my ($cmd, $tail, $client) = @_;
2262:
2263: my $userinput = $cmd.":".$tail; # Reconstruct client's string.
2264:
2265: #
2266: # udom - user's domain.
2267: # uname - Username.
2268: # upass - Current password.
2269: # npass - New password.
2270: # context - Context in which this was called
2271: # (preferences or reset_by_email).
2272: # lonhost - HostID of server where request originated
2273:
2274: my ($udom,$uname,$upass,$npass,$context,$lonhost)=split(/:/,$tail);
2275:
2276: $upass=&unescape($upass);
2277: $npass=&unescape($npass);
2278: &Debug("Trying to change password for $uname");
2279:
2280: # First require that the user can be authenticated with their
2281: # old password unless context was 'reset_by_email':
2282:
2283: my ($validated,$failure);
2284: if ($context eq 'reset_by_email') {
2285: if ($lonhost eq '') {
2286: $failure = 'invalid_client';
2287: } else {
2288: $validated = 1;
2289: }
2290: } else {
2291: $validated = &validate_user($udom, $uname, $upass);
2292: }
2293: if($validated) {
2294: my $realpasswd = &get_auth_type($udom, $uname); # Defined since authd.
2295:
2296: my ($howpwd,$contentpwd)=split(/:/,$realpasswd);
2297: if ($howpwd eq 'internal') {
2298: &Debug("internal auth");
2299: my $ncpass = &hash_passwd($udom,$npass);
2300: if(&rewrite_password_file($udom, $uname, "internal:$ncpass")) {
2301: my $msg="Result of password change for $uname: pwchange_success";
2302: if ($lonhost) {
2303: $msg .= " - request originated from: $lonhost";
2304: }
2305: &logthis($msg);
2306: &update_passwd_history($uname,$udom,$howpwd,$context);
2307: &Reply($client, "ok\n", $userinput);
2308: } else {
2309: &logthis("Unable to open $uname passwd "
2310: ."to change password");
2311: &Failure( $client, "non_authorized\n",$userinput);
2312: }
2313: } elsif ($howpwd eq 'unix' && $context ne 'reset_by_email') {
2314: my $result = &change_unix_password($uname, $npass);
2315: if ($result eq 'ok') {
2316: &update_passwd_history($uname,$udom,$howpwd,$context);
2317: }
2318: &logthis("Result of password change for $uname: ".
2319: $result);
2320: &Reply($client, \$result, $userinput);
2321: } else {
2322: # this just means that the current password mode is not
2323: # one we know how to change (e.g the kerberos auth modes or
2324: # locally written auth handler).
2325: #
2326: &Failure( $client, "auth_mode_error\n", $userinput);
2327: }
2328:
2329: } else {
2330: if ($failure eq '') {
2331: $failure = 'non_authorized';
2332: }
2333: &Failure( $client, "$failure\n", $userinput);
2334: }
2335:
2336: return 1;
2337: }
2338: ®ister_handler("passwd", \&change_password_handler, 1, 1, 0);
2339:
2340: sub hash_passwd {
2341: my ($domain,$plainpass,@rest) = @_;
2342: my ($salt,$cost);
2343: if (@rest) {
2344: $cost = $rest[0];
2345: # salt is first 22 characters, base-64 encoded by bcrypt
2346: my $plainsalt = substr($rest[1],0,22);
2347: $salt = Crypt::Eksblowfish::Bcrypt::de_base64($plainsalt);
2348: } else {
2349: my %domdefaults = &Apache::lonnet::get_domain_defaults($domain);
2350: my $defaultcost = $domdefaults{'intauth_cost'};
2351: if (($defaultcost eq '') || ($defaultcost =~ /D/)) {
2352: $cost = 10;
2353: } else {
2354: $cost = $defaultcost;
2355: }
2356: # Generate random 16-octet base64 salt
2357: $salt = "";
2358: $salt .= pack("C", int rand(256)) for 1..16;
2359: }
2360: my $hash = &Crypt::Eksblowfish::Bcrypt::bcrypt_hash({
2361: key_nul => 1,
2362: cost => $cost,
2363: salt => $salt,
2364: }, Digest::SHA::sha512(Encode::encode('UTF-8',$plainpass)));
2365:
2366: my $result = join("!", "", "bcrypt", sprintf("%02d",$cost),
2367: &Crypt::Eksblowfish::Bcrypt::en_base64($salt).
2368: &Crypt::Eksblowfish::Bcrypt::en_base64($hash));
2369: return $result;
2370: }
2371:
2372: #
2373: # Create a new user. User in this case means a lon-capa user.
2374: # The user must either already exist in some authentication realm
2375: # like kerberos or the /etc/passwd. If not, a user completely local to
2376: # this loncapa system is created.
2377: #
2378: # Parameters:
2379: # $cmd - The command that got us here.
2380: # $tail - Tail of the command (remaining parameters).
2381: # $client - File descriptor connected to client.
2382: # Returns
2383: # 0 - Requested to exit, caller should shut down.
2384: # 1 - Continue processing.
2385: # Implicit inputs:
2386: # The authentication systems describe above have their own forms of implicit
2387: # input into the authentication process that are described above.
2388: sub add_user_handler {
2389:
2390: my ($cmd, $tail, $client) = @_;
2391:
2392:
2393: my ($udom,$uname,$umode,$npass)=split(/:/,$tail);
2394: my $userinput = $cmd.":".$tail; # Reconstruct the full request line.
2395:
2396: &Debug("cmd =".$cmd." $udom =".$udom." uname=".$uname);
2397:
2398:
2399: if($udom eq $currentdomainid) { # Reject new users for other domains...
2400:
2401: my $oldumask=umask(0077);
2402: chomp($npass);
2403: $npass=&unescape($npass);
2404: my $passfilename = &password_path($udom, $uname);
2405: &Debug("Password file created will be:".$passfilename);
2406: if (-e $passfilename) {
2407: &Failure( $client, "already_exists\n", $userinput);
2408: } else {
2409: my $fperror='';
2410: if (!&mkpath($passfilename)) {
2411: $fperror="error: ".($!+0)." mkdir failed while attempting "
2412: ."makeuser";
2413: }
2414: unless ($fperror) {
2415: my $result=&make_passwd_file($uname,$udom,$umode,$npass,
2416: $passfilename,'makeuser');
2417: &Reply($client,\$result, $userinput); #BUGBUG - could be fail
2418: } else {
2419: &Failure($client, \$fperror, $userinput);
2420: }
2421: }
2422: umask($oldumask);
2423: } else {
2424: &Failure($client, "not_right_domain\n",
2425: $userinput); # Even if we are multihomed.
2426:
2427: }
2428: return 1;
2429:
2430: }
2431: ®ister_handler("makeuser", \&add_user_handler, 1, 1, 0);
2432:
2433: #
2434: # Change the authentication method of a user. Note that this may
2435: # also implicitly change the user's password if, for example, the user is
2436: # joining an existing authentication realm. Known authentication realms at
2437: # this time are:
2438: # internal - Purely internal password file (only loncapa knows this user)
2439: # local - Institutionally written authentication module.
2440: # unix - Unix user (/etc/passwd with or without /etc/shadow).
2441: # kerb4 - kerberos version 4
2442: # kerb5 - kerberos version 5
2443: #
2444: # Parameters:
2445: # $cmd - The command that got us here.
2446: # $tail - Tail of the command (remaining parameters).
2447: # $client - File descriptor connected to client.
2448: # Returns
2449: # 0 - Requested to exit, caller should shut down.
2450: # 1 - Continue processing.
2451: # Implicit inputs:
2452: # The authentication systems describe above have their own forms of implicit
2453: # input into the authentication process that are described above.
2454: # NOTE:
2455: # This is also used to change the authentication credential values (e.g. passwd).
2456: #
2457: #
2458: sub change_authentication_handler {
2459:
2460: my ($cmd, $tail, $client) = @_;
2461:
2462: my $userinput = "$cmd:$tail"; # Reconstruct user input.
2463:
2464: my ($udom,$uname,$umode,$npass)=split(/:/,$tail);
2465: &Debug("cmd = ".$cmd." domain= ".$udom."uname =".$uname." umode= ".$umode);
2466: if ($udom ne $currentdomainid) {
2467: &Failure( $client, "not_right_domain\n", $client);
2468: } else {
2469:
2470: chomp($npass);
2471:
2472: $npass=&unescape($npass);
2473: my $oldauth = &get_auth_type($udom, $uname); # Get old auth info.
2474: my $passfilename = &password_path($udom, $uname);
2475: if ($passfilename) { # Not allowed to create a new user!!
2476: # If just changing the unix passwd. need to arrange to run
2477: # passwd since otherwise make_passwd_file will fail as
2478: # creation of unix authenticated users is no longer supported
2479: # except from the command line, when running make_domain_coordinator.pl
2480:
2481: if(($oldauth =~/^unix/) && ($umode eq "unix")) {
2482: my $result = &change_unix_password($uname, $npass);
2483: &logthis("Result of password change for $uname: ".$result);
2484: if ($result eq "ok") {
2485: &update_passwd_history($uname,$udom,$umode,'changeuserauth');
2486: &Reply($client, \$result);
2487: } else {
2488: &Failure($client, \$result);
2489: }
2490: } else {
2491: my $result=&make_passwd_file($uname,$udom,$umode,$npass,
2492: $passfilename,'changeuserauth');
2493: #
2494: # If the current auth mode is internal, and the old auth mode was
2495: # unix, or krb*, and the user is an author for this domain,
2496: # re-run manage_permissions for that role in order to be able
2497: # to take ownership of the construction space back to www:www
2498: #
2499:
2500:
2501: &Reply($client, \$result, $userinput);
2502: }
2503:
2504:
2505: } else {
2506: &Failure($client, "non_authorized\n", $userinput); # Fail the user now.
2507: }
2508: }
2509: return 1;
2510: }
2511: ®ister_handler("changeuserauth", \&change_authentication_handler, 1,1, 0);
2512:
2513: sub update_passwd_history {
2514: my ($uname,$udom,$umode,$context) = @_;
2515: my $proname=&propath($udom,$uname);
2516: my $now = time;
2517: if (open(my $fh,">>$proname/passwd.log")) {
2518: print $fh "$now:$umode:$context\n";
2519: close($fh);
2520: }
2521: return;
2522: }
2523:
2524: #
2525: # Determines if this is the home server for a user. The home server
2526: # for a user will have his/her lon-capa passwd file. Therefore all we need
2527: # to do is determine if this file exists.
2528: #
2529: # Parameters:
2530: # $cmd - The command that got us here.
2531: # $tail - Tail of the command (remaining parameters).
2532: # $client - File descriptor connected to client.
2533: # Returns
2534: # 0 - Requested to exit, caller should shut down.
2535: # 1 - Continue processing.
2536: # Implicit inputs:
2537: # The authentication systems describe above have their own forms of implicit
2538: # input into the authentication process that are described above.
2539: #
2540: sub is_home_handler {
2541: my ($cmd, $tail, $client) = @_;
2542:
2543: my $userinput = "$cmd:$tail";
2544:
2545: my ($udom,$uname)=split(/:/,$tail);
2546: chomp($uname);
2547: my $passfile = &password_filename($udom, $uname);
2548: if($passfile) {
2549: &Reply( $client, "found\n", $userinput);
2550: } else {
2551: &Failure($client, "not_found\n", $userinput);
2552: }
2553: return 1;
2554: }
2555: ®ister_handler("home", \&is_home_handler, 0,1,0);
2556:
2557: #
2558: # Process an update request for a resource.
2559: # A resource has been modified that we hold a subscription to.
2560: # If the resource is not local, then we must update, or at least invalidate our
2561: # cached copy of the resource.
2562: # Parameters:
2563: # $cmd - The command that got us here.
2564: # $tail - Tail of the command (remaining parameters).
2565: # $client - File descriptor connected to client.
2566: # Returns
2567: # 0 - Requested to exit, caller should shut down.
2568: # 1 - Continue processing.
2569: # Implicit inputs:
2570: # The authentication systems describe above have their own forms of implicit
2571: # input into the authentication process that are described above.
2572: #
2573: sub update_resource_handler {
2574:
2575: my ($cmd, $tail, $client) = @_;
2576:
2577: my $userinput = "$cmd:$tail";
2578:
2579: my $fname= $tail; # This allows interactive testing
2580:
2581:
2582: my $ownership=ishome($fname);
2583: if ($ownership eq 'not_owner') {
2584: if (-e $fname) {
2585: # Delete preview file, if exists
2586: unlink("$fname.tmp");
2587: # Get usage stats
2588: my ($dev,$ino,$mode,$nlink,$uid,$gid,$rdev,$size,
2589: $atime,$mtime,$ctime,$blksize,$blocks)=stat($fname);
2590: my $now=time;
2591: my $since=$now-$atime;
2592: # If the file has not been used within lonExpire seconds,
2593: # unsubscribe from it and delete local copy
2594: if ($since>$perlvar{'lonExpire'}) {
2595: my $reply=&Apache::lonnet::reply("unsub:$fname","$clientname");
2596: &devalidate_meta_cache($fname);
2597: unlink("$fname");
2598: unlink("$fname.meta");
2599: } else {
2600: # Yes, this is in active use. Get a fresh copy. Since it might be in
2601: # very active use and huge (like a movie), copy it to "in.transfer" filename first.
2602: my $transname="$fname.in.transfer";
2603: my $remoteurl=&Apache::lonnet::reply("sub:$fname","$clientname");
2604: my $response;
2605: # FIXME: cannot replicate files that take more than two minutes to transfer -- needs checking now 1200s timeout used
2606: # for LWP request.
2607: my $request=new HTTP::Request('GET',"$remoteurl");
2608: $response=&LONCAPA::LWPReq::makerequest($clientname,$request,$transname,\%perlvar,1200,0,1);
2609: if ($response->is_error()) {
2610: my $reply=&Apache::lonnet::reply("unsub:$fname","$clientname");
2611: &devalidate_meta_cache($fname);
2612: if (-e $transname) {
2613: unlink($transname);
2614: }
2615: unlink($fname);
2616: my $message=$response->status_line;
2617: &logthis("LWP GET: $message for $fname ($remoteurl)");
2618: } else {
2619: if ($remoteurl!~/\.meta$/) {
2620: my $mrequest=new HTTP::Request('GET',$remoteurl.'.meta');
2621: my $mresponse = &LONCAPA::LWPReq::makerequest($clientname,$mrequest,$fname.'.meta',\%perlvar,120,0,1);
2622: if ($mresponse->is_error()) {
2623: unlink($fname.'.meta');
2624: }
2625: }
2626: # we successfully transfered, copy file over to real name
2627: rename($transname,$fname);
2628: &devalidate_meta_cache($fname);
2629: }
2630: }
2631: &Reply( $client, "ok\n", $userinput);
2632: } else {
2633: &Failure($client, "not_found\n", $userinput);
2634: }
2635: } else {
2636: &Failure($client, "rejected\n", $userinput);
2637: }
2638: return 1;
2639: }
2640: ®ister_handler("update", \&update_resource_handler, 0 ,1, 0);
2641:
2642: sub devalidate_meta_cache {
2643: my ($url) = @_;
2644: use Cache::Memcached;
2645: my $memcache = new Cache::Memcached({'servers'=>['127.0.0.1:11211']});
2646: $url = &Apache::lonnet::declutter($url);
2647: $url =~ s-\.meta$--;
2648: my $id = &escape('meta:'.$url);
2649: $memcache->delete($id);
2650: }
2651:
2652: #
2653: # Fetch a user file from a remote server to the user's home directory
2654: # userfiles subdir.
2655: # Parameters:
2656: # $cmd - The command that got us here.
2657: # $tail - Tail of the command (remaining parameters).
2658: # $client - File descriptor connected to client.
2659: # Returns
2660: # 0 - Requested to exit, caller should shut down.
2661: # 1 - Continue processing.
2662: #
2663: sub fetch_user_file_handler {
2664:
2665: my ($cmd, $tail, $client) = @_;
2666:
2667: my $userinput = "$cmd:$tail";
2668: my $fname = $tail;
2669: my ($udom,$uname,$ufile) = ($fname =~ m|^([^/]+)/([^/]+)/(.+)$|);
2670: my $udir=&propath($udom,$uname).'/userfiles';
2671: unless (-e $udir) {
2672: mkdir($udir,0770);
2673: }
2674: Debug("fetch user file for $fname");
2675: if (-e $udir) {
2676: $ufile=~s/^[\.\~]+//;
2677:
2678: # IF necessary, create the path right down to the file.
2679: # Note that any regular files in the way of this path are
2680: # wiped out to deal with some earlier folly of mine.
2681:
2682: if (!&mkpath($udir.'/'.$ufile)) {
2683: &Failure($client, "unable_to_create\n", $userinput);
2684: }
2685:
2686: my $destname=$udir.'/'.$ufile;
2687: my $transname=$udir.'/'.$ufile.'.in.transit';
2688: my $clientprotocol=$Apache::lonnet::protocol{$clientname};
2689: $clientprotocol = 'http' if ($clientprotocol ne 'https');
2690: my $clienthost = &Apache::lonnet::hostname($clientname);
2691: my $remoteurl=$clientprotocol.'://'.$clienthost.'/userfiles/'.$fname;
2692: my $response;
2693: Debug("Remote URL : $remoteurl Transfername $transname Destname: $destname");
2694: my $request=new HTTP::Request('GET',"$remoteurl");
2695: my $verifycert = 1;
2696: my @machine_ids = &Apache::lonnet::current_machine_ids();
2697: if (grep(/^\Q$clientname\E$/,@machine_ids)) {
2698: $verifycert = 0;
2699: }
2700: $response = &LONCAPA::LWPReq::makerequest($clientname,$request,$transname,\%perlvar,1200,$verifycert);
2701: if ($response->is_error()) {
2702: unlink($transname);
2703: my $message=$response->status_line;
2704: &logthis("LWP GET: $message for $fname ($remoteurl)");
2705: &Failure($client, "failed\n", $userinput);
2706: } else {
2707: Debug("Renaming $transname to $destname");
2708: if (!rename($transname,$destname)) {
2709: &logthis("Unable to move $transname to $destname");
2710: unlink($transname);
2711: &Failure($client, "failed\n", $userinput);
2712: } else {
2713: if ($fname =~ /^default.+\.(page|sequence)$/) {
2714: my ($major,$minor) = split(/\./,$clientversion);
2715: if (($major < 2) || ($major == 2 && $minor < 11)) {
2716: my $now = time;
2717: &Apache::lonnet::do_cache_new('crschange',$udom.'_'.$uname,$now,600);
2718: my $key = &escape('internal.contentchange');
2719: my $what = "$key=$now";
2720: my $hashref = &tie_user_hash($udom,$uname,'environment',
2721: &GDBM_WRCREAT(),"P",$what);
2722: if ($hashref) {
2723: $hashref->{$key}=$now;
2724: if (!&untie_user_hash($hashref)) {
2725: &logthis("error: ".($!+0)." untie (GDBM) failed ".
2726: "when updating internal.contentchange");
2727: }
2728: }
2729: }
2730: }
2731: &Reply($client, "ok\n", $userinput);
2732: }
2733: }
2734: } else {
2735: &Failure($client, "not_home\n", $userinput);
2736: }
2737: return 1;
2738: }
2739: ®ister_handler("fetchuserfile", \&fetch_user_file_handler, 0, 1, 0);
2740:
2741: #
2742: # Remove a file from a user's home directory userfiles subdirectory.
2743: # Parameters:
2744: # cmd - the Lond request keyword that got us here.
2745: # tail - the part of the command past the keyword.
2746: # client- File descriptor connected with the client.
2747: #
2748: # Returns:
2749: # 1 - Continue processing.
2750: sub remove_user_file_handler {
2751: my ($cmd, $tail, $client) = @_;
2752:
2753: my ($fname) = split(/:/, $tail); # Get rid of any tailing :'s lonc may have sent.
2754:
2755: my ($udom,$uname,$ufile) = ($fname =~ m|^([^/]+)/([^/]+)/(.+)$|);
2756: if ($ufile =~m|/\.\./|) {
2757: # any files paths with /../ in them refuse
2758: # to deal with
2759: &Failure($client, "refused\n", "$cmd:$tail");
2760: } else {
2761: my $udir = &propath($udom,$uname);
2762: if (-e $udir) {
2763: my $file=$udir.'/userfiles/'.$ufile;
2764: if (-e $file) {
2765: #
2766: # If the file is a regular file unlink is fine...
2767: # However it's possible the client wants a dir
2768: # removed, in which case rmdir is more appropriate.
2769: # Note: rmdir will only remove an empty directory.
2770: #
2771: if (-f $file){
2772: unlink($file);
2773: # for html files remove the associated .bak file
2774: # which may have been created by the editor.
2775: if ($ufile =~ m{^((docs|supplemental)/(?:\d+|default)/\d+(?:|/.+)/)[^/]+\.x?html?$}i) {
2776: my $path = $1;
2777: if (-e $file.'.bak') {
2778: unlink($file.'.bak');
2779: }
2780: }
2781: } elsif(-d $file) {
2782: rmdir($file);
2783: }
2784: if (-e $file) {
2785: # File is still there after we deleted it ?!?
2786:
2787: &Failure($client, "failed\n", "$cmd:$tail");
2788: } else {
2789: &Reply($client, "ok\n", "$cmd:$tail");
2790: }
2791: } else {
2792: &Failure($client, "not_found\n", "$cmd:$tail");
2793: }
2794: } else {
2795: &Failure($client, "not_home\n", "$cmd:$tail");
2796: }
2797: }
2798: return 1;
2799: }
2800: ®ister_handler("removeuserfile", \&remove_user_file_handler, 0,1,0);
2801:
2802: #
2803: # make a directory in a user's home directory userfiles subdirectory.
2804: # Parameters:
2805: # cmd - the Lond request keyword that got us here.
2806: # tail - the part of the command past the keyword.
2807: # client- File descriptor connected with the client.
2808: #
2809: # Returns:
2810: # 1 - Continue processing.
2811: sub mkdir_user_file_handler {
2812: my ($cmd, $tail, $client) = @_;
2813:
2814: my ($dir) = split(/:/, $tail); # Get rid of any tailing :'s lonc may have sent.
2815: $dir=&unescape($dir);
2816: my ($udom,$uname,$ufile) = ($dir =~ m|^([^/]+)/([^/]+)/(.+)$|);
2817: if ($ufile =~m|/\.\./|) {
2818: # any files paths with /../ in them refuse
2819: # to deal with
2820: &Failure($client, "refused\n", "$cmd:$tail");
2821: } else {
2822: my $udir = &propath($udom,$uname);
2823: if (-e $udir) {
2824: my $newdir=$udir.'/userfiles/'.$ufile.'/';
2825: if (!&mkpath($newdir)) {
2826: &Failure($client, "failed\n", "$cmd:$tail");
2827: }
2828: &Reply($client, "ok\n", "$cmd:$tail");
2829: } else {
2830: &Failure($client, "not_home\n", "$cmd:$tail");
2831: }
2832: }
2833: return 1;
2834: }
2835: ®ister_handler("mkdiruserfile", \&mkdir_user_file_handler, 0,1,0);
2836:
2837: #
2838: # rename a file in a user's home directory userfiles subdirectory.
2839: # Parameters:
2840: # cmd - the Lond request keyword that got us here.
2841: # tail - the part of the command past the keyword.
2842: # client- File descriptor connected with the client.
2843: #
2844: # Returns:
2845: # 1 - Continue processing.
2846: sub rename_user_file_handler {
2847: my ($cmd, $tail, $client) = @_;
2848:
2849: my ($udom,$uname,$old,$new) = split(/:/, $tail);
2850: $old=&unescape($old);
2851: $new=&unescape($new);
2852: if ($new =~m|/\.\./| || $old =~m|/\.\./|) {
2853: # any files paths with /../ in them refuse to deal with
2854: &Failure($client, "refused\n", "$cmd:$tail");
2855: } else {
2856: my $udir = &propath($udom,$uname);
2857: if (-e $udir) {
2858: my $oldfile=$udir.'/userfiles/'.$old;
2859: my $newfile=$udir.'/userfiles/'.$new;
2860: if (-e $newfile) {
2861: &Failure($client, "exists\n", "$cmd:$tail");
2862: } elsif (! -e $oldfile) {
2863: &Failure($client, "not_found\n", "$cmd:$tail");
2864: } else {
2865: if (!rename($oldfile,$newfile)) {
2866: &Failure($client, "failed\n", "$cmd:$tail");
2867: } else {
2868: &Reply($client, "ok\n", "$cmd:$tail");
2869: }
2870: }
2871: } else {
2872: &Failure($client, "not_home\n", "$cmd:$tail");
2873: }
2874: }
2875: return 1;
2876: }
2877: ®ister_handler("renameuserfile", \&rename_user_file_handler, 0,1,0);
2878:
2879: #
2880: # Checks if the specified user has an active session on the server
2881: # return ok if so, not_found if not
2882: #
2883: # Parameters:
2884: # cmd - The request keyword that dispatched to tus.
2885: # tail - The tail of the request (colon separated parameters).
2886: # client - Filehandle open on the client.
2887: # Return:
2888: # 1.
2889: sub user_has_session_handler {
2890: my ($cmd, $tail, $client) = @_;
2891:
2892: my ($udom, $uname) = map { &unescape($_) } (split(/:/, $tail));
2893:
2894: opendir(DIR,$perlvar{'lonIDsDir'});
2895: my $filename;
2896: while ($filename=readdir(DIR)) {
2897: last if ($filename=~/^\Q$uname\E_\d+_\Q$udom\E_/);
2898: }
2899: if ($filename) {
2900: &Reply($client, "ok\n", "$cmd:$tail");
2901: } else {
2902: &Failure($client, "not_found\n", "$cmd:$tail");
2903: }
2904: return 1;
2905:
2906: }
2907: ®ister_handler("userhassession", \&user_has_session_handler, 0,1,0);
2908:
2909: #
2910: # Authenticate access to a user file by checking that the token the user's
2911: # passed also exists in their session file
2912: #
2913: # Parameters:
2914: # cmd - The request keyword that dispatched to tus.
2915: # tail - The tail of the request (colon separated parameters).
2916: # client - Filehandle open on the client.
2917: # Return:
2918: # 1.
2919: sub token_auth_user_file_handler {
2920: my ($cmd, $tail, $client) = @_;
2921:
2922: my ($fname, $session) = split(/:/, $tail);
2923:
2924: chomp($session);
2925: my $reply="non_auth";
2926: my $file = $perlvar{'lonIDsDir'}.'/'.$session.'.id';
2927: if (open(ENVIN,"$file")) {
2928: flock(ENVIN,LOCK_SH);
2929: tie(my %disk_env,'GDBM_File',"$file",&GDBM_READER(),0640);
2930: if (exists($disk_env{"userfile.$fname"})) {
2931: $reply="ok";
2932: } else {
2933: foreach my $envname (keys(%disk_env)) {
2934: if ($envname=~ m|^userfile\.\Q$fname\E|) {
2935: $reply="ok";
2936: last;
2937: }
2938: }
2939: }
2940: untie(%disk_env);
2941: close(ENVIN);
2942: &Reply($client, \$reply, "$cmd:$tail");
2943: } else {
2944: &Failure($client, "invalid_token\n", "$cmd:$tail");
2945: }
2946: return 1;
2947:
2948: }
2949: ®ister_handler("tokenauthuserfile", \&token_auth_user_file_handler, 0,1,0);
2950:
2951: #
2952: # Unsubscribe from a resource.
2953: #
2954: # Parameters:
2955: # $cmd - The command that got us here.
2956: # $tail - Tail of the command (remaining parameters).
2957: # $client - File descriptor connected to client.
2958: # Returns
2959: # 0 - Requested to exit, caller should shut down.
2960: # 1 - Continue processing.
2961: #
2962: sub unsubscribe_handler {
2963: my ($cmd, $tail, $client) = @_;
2964:
2965: my $userinput= "$cmd:$tail";
2966:
2967: my ($fname) = split(/:/,$tail); # Split in case there's extrs.
2968:
2969: &Debug("Unsubscribing $fname");
2970: if (-e $fname) {
2971: &Debug("Exists");
2972: &Reply($client, &unsub($fname,$clientip), $userinput);
2973: } else {
2974: &Failure($client, "not_found\n", $userinput);
2975: }
2976: return 1;
2977: }
2978: ®ister_handler("unsub", \&unsubscribe_handler, 0, 1, 0);
2979:
2980: # Subscribe to a resource
2981: #
2982: # Parameters:
2983: # $cmd - The command that got us here.
2984: # $tail - Tail of the command (remaining parameters).
2985: # $client - File descriptor connected to client.
2986: # Returns
2987: # 0 - Requested to exit, caller should shut down.
2988: # 1 - Continue processing.
2989: #
2990: sub subscribe_handler {
2991: my ($cmd, $tail, $client)= @_;
2992:
2993: my $userinput = "$cmd:$tail";
2994:
2995: &Reply( $client, &subscribe($userinput,$clientip), $userinput);
2996:
2997: return 1;
2998: }
2999: ®ister_handler("sub", \&subscribe_handler, 0, 1, 0);
3000:
3001: #
3002: # Determine the latest version of a resource (it looks for the highest
3003: # past version and then returns that +1)
3004: #
3005: # Parameters:
3006: # $cmd - The command that got us here.
3007: # $tail - Tail of the command (remaining parameters).
3008: # (Should consist of an absolute path to a file)
3009: # $client - File descriptor connected to client.
3010: # Returns
3011: # 0 - Requested to exit, caller should shut down.
3012: # 1 - Continue processing.
3013: #
3014: sub current_version_handler {
3015: my ($cmd, $tail, $client) = @_;
3016:
3017: my $userinput= "$cmd:$tail";
3018:
3019: my $fname = $tail;
3020: &Reply( $client, ¤tversion($fname)."\n", $userinput);
3021: return 1;
3022:
3023: }
3024: ®ister_handler("currentversion", \¤t_version_handler, 0, 1, 0);
3025:
3026: # Make an entry in a user's activity log.
3027: #
3028: # Parameters:
3029: # $cmd - The command that got us here.
3030: # $tail - Tail of the command (remaining parameters).
3031: # $client - File descriptor connected to client.
3032: # Returns
3033: # 0 - Requested to exit, caller should shut down.
3034: # 1 - Continue processing.
3035: #
3036: sub activity_log_handler {
3037: my ($cmd, $tail, $client) = @_;
3038:
3039:
3040: my $userinput= "$cmd:$tail";
3041:
3042: my ($udom,$uname,$what)=split(/:/,$tail);
3043: chomp($what);
3044: my $proname=&propath($udom,$uname);
3045: my $now=time;
3046: my $hfh;
3047: if ($hfh=IO::File->new(">>$proname/activity.log")) {
3048: print $hfh "$now:$clientname:$what\n";
3049: &Reply( $client, "ok\n", $userinput);
3050: } else {
3051: &Failure($client, "error: ".($!+0)." IO::File->new Failed "
3052: ."while attempting log\n",
3053: $userinput);
3054: }
3055:
3056: return 1;
3057: }
3058: ®ister_handler("log", \&activity_log_handler, 0, 1, 0);
3059:
3060: #
3061: # Put a namespace entry in a user profile hash.
3062: # My druthers would be for this to be an encrypted interaction too.
3063: # anything that might be an inadvertent covert channel about either
3064: # user authentication or user personal information....
3065: #
3066: # Parameters:
3067: # $cmd - The command that got us here.
3068: # $tail - Tail of the command (remaining parameters).
3069: # $client - File descriptor connected to client.
3070: # Returns
3071: # 0 - Requested to exit, caller should shut down.
3072: # 1 - Continue processing.
3073: #
3074: sub put_user_profile_entry {
3075: my ($cmd, $tail, $client) = @_;
3076:
3077: my $userinput = "$cmd:$tail";
3078:
3079: my ($udom,$uname,$namespace,$what) =split(/:/,$tail,4);
3080: if ($namespace ne 'roles') {
3081: chomp($what);
3082: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3083: &GDBM_WRCREAT(),"P",$what);
3084: if($hashref) {
3085: my @pairs=split(/\&/,$what);
3086: foreach my $pair (@pairs) {
3087: my ($key,$value)=split(/=/,$pair);
3088: $hashref->{$key}=$value;
3089: }
3090: if (&untie_user_hash($hashref)) {
3091: &Reply( $client, "ok\n", $userinput);
3092: } else {
3093: &Failure($client, "error: ".($!+0)." untie(GDBM) failed ".
3094: "while attempting put\n",
3095: $userinput);
3096: }
3097: } else {
3098: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
3099: "while attempting put\n", $userinput);
3100: }
3101: } else {
3102: &Failure( $client, "refused\n", $userinput);
3103: }
3104:
3105: return 1;
3106: }
3107: ®ister_handler("put", \&put_user_profile_entry, 0, 1, 0);
3108:
3109: # Put a piece of new data in hash, returns error if entry already exists
3110: # Parameters:
3111: # $cmd - The command that got us here.
3112: # $tail - Tail of the command (remaining parameters).
3113: # $client - File descriptor connected to client.
3114: # Returns
3115: # 0 - Requested to exit, caller should shut down.
3116: # 1 - Continue processing.
3117: #
3118: sub newput_user_profile_entry {
3119: my ($cmd, $tail, $client) = @_;
3120:
3121: my $userinput = "$cmd:$tail";
3122:
3123: my ($udom,$uname,$namespace,$what) =split(/:/,$tail,4);
3124: if ($namespace eq 'roles') {
3125: &Failure( $client, "refused\n", $userinput);
3126: return 1;
3127: }
3128:
3129: chomp($what);
3130:
3131: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3132: &GDBM_WRCREAT(),"N",$what);
3133: if(!$hashref) {
3134: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
3135: "while attempting put\n", $userinput);
3136: return 1;
3137: }
3138:
3139: my @pairs=split(/\&/,$what);
3140: foreach my $pair (@pairs) {
3141: my ($key,$value)=split(/=/,$pair);
3142: if (exists($hashref->{$key})) {
3143: if (!&untie_user_hash($hashref)) {
3144: &logthis("error: ".($!+0)." untie (GDBM) failed ".
3145: "while attempting newput - early out as key exists");
3146: }
3147: &Failure($client, "key_exists: ".$key."\n",$userinput);
3148: return 1;
3149: }
3150: }
3151:
3152: foreach my $pair (@pairs) {
3153: my ($key,$value)=split(/=/,$pair);
3154: $hashref->{$key}=$value;
3155: }
3156:
3157: if (&untie_user_hash($hashref)) {
3158: &Reply( $client, "ok\n", $userinput);
3159: } else {
3160: &Failure($client, "error: ".($!+0)." untie(GDBM) failed ".
3161: "while attempting put\n",
3162: $userinput);
3163: }
3164: return 1;
3165: }
3166: ®ister_handler("newput", \&newput_user_profile_entry, 0, 1, 0);
3167:
3168: #
3169: # Increment a profile entry in the user history file.
3170: # The history contains keyword value pairs. In this case,
3171: # The value itself is a pair of numbers. The first, the current value
3172: # the second an increment that this function applies to the current
3173: # value.
3174: #
3175: # Parameters:
3176: # $cmd - The command that got us here.
3177: # $tail - Tail of the command (remaining parameters).
3178: # $client - File descriptor connected to client.
3179: # Returns
3180: # 0 - Requested to exit, caller should shut down.
3181: # 1 - Continue processing.
3182: #
3183: sub increment_user_value_handler {
3184: my ($cmd, $tail, $client) = @_;
3185:
3186: my $userinput = "$cmd:$tail";
3187:
3188: my ($udom,$uname,$namespace,$what) =split(/:/,$tail);
3189: if ($namespace ne 'roles') {
3190: chomp($what);
3191: my $hashref = &tie_user_hash($udom, $uname,
3192: $namespace, &GDBM_WRCREAT(),
3193: "P",$what);
3194: if ($hashref) {
3195: my @pairs=split(/\&/,$what);
3196: foreach my $pair (@pairs) {
3197: my ($key,$value)=split(/=/,$pair);
3198: $value = &unescape($value);
3199: # We could check that we have a number...
3200: if (! defined($value) || $value eq '') {
3201: $value = 1;
3202: }
3203: $hashref->{$key}+=$value;
3204: if ($namespace eq 'nohist_resourcetracker') {
3205: if ($hashref->{$key} < 0) {
3206: $hashref->{$key} = 0;
3207: }
3208: }
3209: }
3210: if (&untie_user_hash($hashref)) {
3211: &Reply( $client, "ok\n", $userinput);
3212: } else {
3213: &Failure($client, "error: ".($!+0)." untie(GDBM) failed ".
3214: "while attempting inc\n", $userinput);
3215: }
3216: } else {
3217: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
3218: "while attempting inc\n", $userinput);
3219: }
3220: } else {
3221: &Failure($client, "refused\n", $userinput);
3222: }
3223:
3224: return 1;
3225: }
3226: ®ister_handler("inc", \&increment_user_value_handler, 0, 1, 0);
3227:
3228: #
3229: # Put a new role for a user. Roles are LonCAPA's packaging of permissions.
3230: # Each 'role' a user has implies a set of permissions. Adding a new role
3231: # for a person grants the permissions packaged with that role
3232: # to that user when the role is selected.
3233: #
3234: # Parameters:
3235: # $cmd - The command string (rolesput).
3236: # $tail - The remainder of the request line. For rolesput this
3237: # consists of a colon separated list that contains:
3238: # The domain and user that is granting the role (logged).
3239: # The domain and user that is getting the role.
3240: # The roles being granted as a set of & separated pairs.
3241: # each pair a key value pair.
3242: # $client - File descriptor connected to the client.
3243: # Returns:
3244: # 0 - If the daemon should exit
3245: # 1 - To continue processing.
3246: #
3247: #
3248: sub roles_put_handler {
3249: my ($cmd, $tail, $client) = @_;
3250:
3251: my $userinput = "$cmd:$tail";
3252:
3253: my ( $exedom, $exeuser, $udom, $uname, $what) = split(/:/,$tail);
3254:
3255:
3256: my $namespace='roles';
3257: chomp($what);
3258: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3259: &GDBM_WRCREAT(), "P",
3260: "$exedom:$exeuser:$what");
3261: #
3262: # Log the attempt to set a role. The {}'s here ensure that the file
3263: # handle is open for the minimal amount of time. Since the flush
3264: # is done on close this improves the chances the log will be an un-
3265: # corrupted ordered thing.
3266: if ($hashref) {
3267: my $pass_entry = &get_auth_type($udom, $uname);
3268: my ($auth_type,$pwd) = split(/:/, $pass_entry);
3269: $auth_type = $auth_type.":";
3270: my @pairs=split(/\&/,$what);
3271: foreach my $pair (@pairs) {
3272: my ($key,$value)=split(/=/,$pair);
3273: &manage_permissions($key, $udom, $uname,
3274: $auth_type);
3275: $hashref->{$key}=$value;
3276: }
3277: if (&untie_user_hash($hashref)) {
3278: &Reply($client, "ok\n", $userinput);
3279: } else {
3280: &Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ".
3281: "while attempting rolesput\n", $userinput);
3282: }
3283: } else {
3284: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
3285: "while attempting rolesput\n", $userinput);
3286: }
3287: return 1;
3288: }
3289: ®ister_handler("rolesput", \&roles_put_handler, 1,1,0); # Encoded client only.
3290:
3291: #
3292: # Deletes (removes) a role for a user. This is equivalent to removing
3293: # a permissions package associated with the role from the user's profile.
3294: #
3295: # Parameters:
3296: # $cmd - The command (rolesdel)
3297: # $tail - The remainder of the request line. This consists
3298: # of:
3299: # The domain and user requesting the change (logged)
3300: # The domain and user being changed.
3301: # The roles being revoked. These are shipped to us
3302: # as a bunch of & separated role name keywords.
3303: # $client - The file handle open on the client.
3304: # Returns:
3305: # 1 - Continue processing
3306: # 0 - Exit.
3307: #
3308: sub roles_delete_handler {
3309: my ($cmd, $tail, $client) = @_;
3310:
3311: my $userinput = "$cmd:$tail";
3312:
3313: my ($exedom,$exeuser,$udom,$uname,$what)=split(/:/,$tail);
3314: &Debug("cmd = ".$cmd." exedom= ".$exedom."user = ".$exeuser." udom=".$udom.
3315: "what = ".$what);
3316: my $namespace='roles';
3317: chomp($what);
3318: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3319: &GDBM_WRCREAT(), "D",
3320: "$exedom:$exeuser:$what");
3321:
3322: if ($hashref) {
3323: my @rolekeys=split(/\&/,$what);
3324:
3325: foreach my $key (@rolekeys) {
3326: delete $hashref->{$key};
3327: }
3328: if (&untie_user_hash($hashref)) {
3329: &Reply($client, "ok\n", $userinput);
3330: } else {
3331: &Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ".
3332: "while attempting rolesdel\n", $userinput);
3333: }
3334: } else {
3335: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
3336: "while attempting rolesdel\n", $userinput);
3337: }
3338:
3339: return 1;
3340: }
3341: ®ister_handler("rolesdel", \&roles_delete_handler, 1,1, 0); # Encoded client only
3342:
3343: # Unencrypted get from a user's profile database. See
3344: # GetProfileEntryEncrypted for a version that does end-to-end encryption.
3345: # This function retrieves a keyed item from a specific named database in the
3346: # user's directory.
3347: #
3348: # Parameters:
3349: # $cmd - Command request keyword (get).
3350: # $tail - Tail of the command. This is a colon separated list
3351: # consisting of the domain and username that uniquely
3352: # identifies the profile,
3353: # The 'namespace' which selects the gdbm file to
3354: # do the lookup in,
3355: # & separated list of keys to lookup. Note that
3356: # the values are returned as an & separated list too.
3357: # $client - File descriptor open on the client.
3358: # Returns:
3359: # 1 - Continue processing.
3360: # 0 - Exit.
3361: #
3362: sub get_profile_entry {
3363: my ($cmd, $tail, $client) = @_;
3364:
3365: my $userinput= "$cmd:$tail";
3366:
3367: my ($udom,$uname,$namespace,$what) = split(/:/,$tail);
3368: chomp($what);
3369:
3370:
3371: my $replystring = read_profile($udom, $uname, $namespace, $what);
3372: my ($first) = split(/:/,$replystring);
3373: if($first ne "error") {
3374: &Reply($client, \$replystring, $userinput);
3375: } else {
3376: &Failure($client, $replystring." while attempting get\n", $userinput);
3377: }
3378: return 1;
3379:
3380:
3381: }
3382: ®ister_handler("get", \&get_profile_entry, 0,1,0);
3383:
3384: #
3385: # Process the encrypted get request. Note that the request is sent
3386: # in clear, but the reply is encrypted. This is a small covert channel:
3387: # information about the sensitive keys is given to the snooper. Just not
3388: # information about the values of the sensitive key. Hmm if I wanted to
3389: # know these I'd snoop for the egets. Get the profile item names from them
3390: # and then issue a get for them since there's no enforcement of the
3391: # requirement of an encrypted get for particular profile items. If I
3392: # were re-doing this, I'd force the request to be encrypted as well as the
3393: # reply. I'd also just enforce encrypted transactions for all gets since
3394: # that would prevent any covert channel snooping.
3395: #
3396: # Parameters:
3397: # $cmd - Command keyword of request (eget).
3398: # $tail - Tail of the command. See GetProfileEntry
3399: # for more information about this.
3400: # $client - File open on the client.
3401: # Returns:
3402: # 1 - Continue processing
3403: # 0 - server should exit.
3404: sub get_profile_entry_encrypted {
3405: my ($cmd, $tail, $client) = @_;
3406:
3407: my $userinput = "$cmd:$tail";
3408:
3409: my ($udom,$uname,$namespace,$what) = split(/:/,$tail);
3410: chomp($what);
3411: my $qresult = read_profile($udom, $uname, $namespace, $what);
3412: my ($first) = split(/:/, $qresult);
3413: if($first ne "error") {
3414:
3415: if ($cipher) {
3416: my $cmdlength=length($qresult);
3417: $qresult.=" ";
3418: my $encqresult='';
3419: for(my $encidx=0;$encidx<=$cmdlength;$encidx+=8) {
3420: $encqresult.= unpack("H16",
3421: $cipher->encrypt(substr($qresult,
3422: $encidx,
3423: 8)));
3424: }
3425: &Reply( $client, "enc:$cmdlength:$encqresult\n", $userinput);
3426: } else {
3427: &Failure( $client, "error:no_key\n", $userinput);
3428: }
3429: } else {
3430: &Failure($client, "$qresult while attempting eget\n", $userinput);
3431:
3432: }
3433:
3434: return 1;
3435: }
3436: ®ister_handler("eget", \&get_profile_entry_encrypted, 0, 1, 0);
3437:
3438: #
3439: # Deletes a key in a user profile database.
3440: #
3441: # Parameters:
3442: # $cmd - Command keyword (del).
3443: # $tail - Command tail. IN this case a colon
3444: # separated list containing:
3445: # The domain and user that identifies uniquely
3446: # the identity of the user.
3447: # The profile namespace (name of the profile
3448: # database file).
3449: # & separated list of keywords to delete.
3450: # $client - File open on client socket.
3451: # Returns:
3452: # 1 - Continue processing
3453: # 0 - Exit server.
3454: #
3455: #
3456: sub delete_profile_entry {
3457: my ($cmd, $tail, $client) = @_;
3458:
3459: my $userinput = "cmd:$tail";
3460:
3461: my ($udom,$uname,$namespace,$what) = split(/:/,$tail);
3462: chomp($what);
3463: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3464: &GDBM_WRCREAT(),
3465: "D",$what);
3466: if ($hashref) {
3467: my @keys=split(/\&/,$what);
3468: foreach my $key (@keys) {
3469: delete($hashref->{$key});
3470: }
3471: if (&untie_user_hash($hashref)) {
3472: &Reply($client, "ok\n", $userinput);
3473: } else {
3474: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
3475: "while attempting del\n", $userinput);
3476: }
3477: } else {
3478: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
3479: "while attempting del\n", $userinput);
3480: }
3481: return 1;
3482: }
3483: ®ister_handler("del", \&delete_profile_entry, 0, 1, 0);
3484:
3485: #
3486: # List the set of keys that are defined in a profile database file.
3487: # A successful reply from this will contain an & separated list of
3488: # the keys.
3489: # Parameters:
3490: # $cmd - Command request (keys).
3491: # $tail - Remainder of the request, a colon separated
3492: # list containing domain/user that identifies the
3493: # user being queried, and the database namespace
3494: # (database filename essentially).
3495: # $client - File open on the client.
3496: # Returns:
3497: # 1 - Continue processing.
3498: # 0 - Exit the server.
3499: #
3500: sub get_profile_keys {
3501: my ($cmd, $tail, $client) = @_;
3502:
3503: my $userinput = "$cmd:$tail";
3504:
3505: my ($udom,$uname,$namespace)=split(/:/,$tail);
3506: my $qresult='';
3507: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3508: &GDBM_READER());
3509: if ($hashref) {
3510: foreach my $key (keys %$hashref) {
3511: $qresult.="$key&";
3512: }
3513: if (&untie_user_hash($hashref)) {
3514: $qresult=~s/\&$//;
3515: &Reply($client, \$qresult, $userinput);
3516: } else {
3517: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
3518: "while attempting keys\n", $userinput);
3519: }
3520: } else {
3521: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
3522: "while attempting keys\n", $userinput);
3523: }
3524:
3525: return 1;
3526: }
3527: ®ister_handler("keys", \&get_profile_keys, 0, 1, 0);
3528:
3529: #
3530: # Dump the contents of a user profile database.
3531: # Note that this constitutes a very large covert channel too since
3532: # the dump will return sensitive information that is not encrypted.
3533: # The naive security assumption is that the session negotiation ensures
3534: # our client is trusted and I don't believe that's assured at present.
3535: # Sure want badly to go to ssl or tls. Of course if my peer isn't really
3536: # a LonCAPA node they could have negotiated an encryption key too so >sigh<.
3537: #
3538: # Parameters:
3539: # $cmd - The command request keyword (currentdump).
3540: # $tail - Remainder of the request, consisting of a colon
3541: # separated list that has the domain/username and
3542: # the namespace to dump (database file).
3543: # $client - file open on the remote client.
3544: # Returns:
3545: # 1 - Continue processing.
3546: # 0 - Exit the server.
3547: #
3548: sub dump_profile_database {
3549: my ($cmd, $tail, $client) = @_;
3550:
3551: my $res = LONCAPA::Lond::dump_profile_database($tail);
3552:
3553: if ($res =~ /^error:/) {
3554: Failure($client, \$res, "$cmd:$tail");
3555: } else {
3556: Reply($client, \$res, "$cmd:$tail");
3557: }
3558:
3559: return 1;
3560:
3561: #TODO remove
3562: my $userinput = "$cmd:$tail";
3563:
3564: my ($udom,$uname,$namespace) = split(/:/,$tail);
3565: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3566: &GDBM_READER());
3567: if ($hashref) {
3568: # Structure of %data:
3569: # $data{$symb}->{$parameter}=$value;
3570: # $data{$symb}->{'v.'.$parameter}=$version;
3571: # since $parameter will be unescaped, we do not
3572: # have to worry about silly parameter names...
3573:
3574: my $qresult='';
3575: my %data = (); # A hash of anonymous hashes..
3576: while (my ($key,$value) = each(%$hashref)) {
3577: my ($v,$symb,$param) = split(/:/,$key);
3578: next if ($v eq 'version' || $symb eq 'keys');
3579: next if (exists($data{$symb}) &&
3580: exists($data{$symb}->{$param}) &&
3581: $data{$symb}->{'v.'.$param} > $v);
3582: $data{$symb}->{$param}=$value;
3583: $data{$symb}->{'v.'.$param}=$v;
3584: }
3585: if (&untie_user_hash($hashref)) {
3586: while (my ($symb,$param_hash) = each(%data)) {
3587: while(my ($param,$value) = each (%$param_hash)){
3588: next if ($param =~ /^v\./); # Ignore versions...
3589: #
3590: # Just dump the symb=value pairs separated by &
3591: #
3592: $qresult.=$symb.':'.$param.'='.$value.'&';
3593: }
3594: }
3595: chop($qresult);
3596: &Reply($client , \$qresult, $userinput);
3597: } else {
3598: &Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ".
3599: "while attempting currentdump\n", $userinput);
3600: }
3601: } else {
3602: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
3603: "while attempting currentdump\n", $userinput);
3604: }
3605:
3606: return 1;
3607: }
3608: ®ister_handler("currentdump", \&dump_profile_database, 0, 1, 0);
3609:
3610: #
3611: # Dump a profile database with an optional regular expression
3612: # to match against the keys. In this dump, no effort is made
3613: # to separate symb from version information. Presumably the
3614: # databases that are dumped by this command are of a different
3615: # structure. Need to look at this and improve the documentation of
3616: # both this and the currentdump handler.
3617: # Parameters:
3618: # $cmd - The command keyword.
3619: # $tail - All of the characters after the $cmd:
3620: # These are expected to be a colon
3621: # separated list containing:
3622: # domain/user - identifying the user.
3623: # namespace - identifying the database.
3624: # regexp - optional regular expression
3625: # that is matched against
3626: # database keywords to do
3627: # selective dumps.
3628: # range - optional range of entries
3629: # e.g., 10-20 would return the
3630: # 10th to 19th items, etc.
3631: # $client - Channel open on the client.
3632: # Returns:
3633: # 1 - Continue processing.
3634: # Side effects:
3635: # response is written to $client.
3636: #
3637: sub dump_with_regexp {
3638: my ($cmd, $tail, $client) = @_;
3639:
3640: my $res = LONCAPA::Lond::dump_with_regexp($tail, $clientversion);
3641:
3642: if ($res =~ /^error:/) {
3643: Failure($client, \$res, "$cmd:$tail");
3644: } else {
3645: Reply($client, \$res, "$cmd:$tail");
3646: }
3647:
3648: return 1;
3649: }
3650: ®ister_handler("dump", \&dump_with_regexp, 0, 1, 0);
3651:
3652: # Store a set of key=value pairs associated with a versioned name.
3653: #
3654: # Parameters:
3655: # $cmd - Request command keyword.
3656: # $tail - Tail of the request. This is a colon
3657: # separated list containing:
3658: # domain/user - User and authentication domain.
3659: # namespace - Name of the database being modified
3660: # rid - Resource keyword to modify.
3661: # what - new value associated with rid.
3662: # laststore - (optional) version=timestamp
3663: # for most recent transaction for rid
3664: # in namespace, when cstore was called
3665: #
3666: # $client - Socket open on the client.
3667: #
3668: #
3669: # Returns:
3670: # 1 (keep on processing).
3671: # Side-Effects:
3672: # Writes to the client
3673: # Successful storage will cause either 'ok', or, if $laststore was included
3674: # in the tail of the request, and the version number for the last transaction
3675: # is larger than the version in $laststore, delay:$numtrans , where $numtrans
3676: # is the number of store evevnts recorded for rid in namespace since
3677: # lonnet::store() was called by the client.
3678: #
3679: sub store_handler {
3680: my ($cmd, $tail, $client) = @_;
3681:
3682: my $userinput = "$cmd:$tail";
3683: chomp($tail);
3684: my ($udom,$uname,$namespace,$rid,$what,$laststore) =split(/:/,$tail);
3685: if ($namespace ne 'roles') {
3686:
3687: my @pairs=split(/\&/,$what);
3688: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3689: &GDBM_WRCREAT(), "S",
3690: "$rid:$what");
3691: if ($hashref) {
3692: my $now = time;
3693: my $numtrans;
3694: if ($laststore) {
3695: my ($previousversion,$previoustime) = split(/\=/,$laststore);
3696: my ($lastversion,$lasttime) = (0,0);
3697: $lastversion = $hashref->{"version:$rid"};
3698: if ($lastversion) {
3699: $lasttime = $hashref->{"$lastversion:$rid:timestamp"};
3700: }
3701: if (($previousversion) && ($previousversion !~ /\D/)) {
3702: if (($lastversion > $previousversion) && ($lasttime >= $previoustime)) {
3703: $numtrans = $lastversion - $previousversion;
3704: }
3705: } elsif ($lastversion) {
3706: $numtrans = $lastversion;
3707: }
3708: if ($numtrans) {
3709: $numtrans =~ s/D//g;
3710: }
3711: }
3712: $hashref->{"version:$rid"}++;
3713: my $version=$hashref->{"version:$rid"};
3714: my $allkeys='';
3715: foreach my $pair (@pairs) {
3716: my ($key,$value)=split(/=/,$pair);
3717: $allkeys.=$key.':';
3718: $hashref->{"$version:$rid:$key"}=$value;
3719: }
3720: $hashref->{"$version:$rid:timestamp"}=$now;
3721: $allkeys.='timestamp';
3722: $hashref->{"$version:keys:$rid"}=$allkeys;
3723: if (&untie_user_hash($hashref)) {
3724: my $msg = 'ok';
3725: if ($numtrans) {
3726: $msg = 'delay:'.$numtrans;
3727: }
3728: &Reply($client, "$msg\n", $userinput);
3729: } else {
3730: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
3731: "while attempting store\n", $userinput);
3732: }
3733: } else {
3734: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
3735: "while attempting store\n", $userinput);
3736: }
3737: } else {
3738: &Failure($client, "refused\n", $userinput);
3739: }
3740:
3741: return 1;
3742: }
3743: ®ister_handler("store", \&store_handler, 0, 1, 0);
3744:
3745: # Modify a set of key=value pairs associated with a versioned name.
3746: #
3747: # Parameters:
3748: # $cmd - Request command keyword.
3749: # $tail - Tail of the request. This is a colon
3750: # separated list containing:
3751: # domain/user - User and authentication domain.
3752: # namespace - Name of the database being modified
3753: # rid - Resource keyword to modify.
3754: # v - Version item to modify
3755: # what - new value associated with rid.
3756: #
3757: # $client - Socket open on the client.
3758: #
3759: #
3760: # Returns:
3761: # 1 (keep on processing).
3762: # Side-Effects:
3763: # Writes to the client
3764: sub putstore_handler {
3765: my ($cmd, $tail, $client) = @_;
3766:
3767: my $userinput = "$cmd:$tail";
3768:
3769: my ($udom,$uname,$namespace,$rid,$v,$what) =split(/:/,$tail);
3770: if ($namespace ne 'roles') {
3771:
3772: chomp($what);
3773: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3774: &GDBM_WRCREAT(), "M",
3775: "$rid:$v:$what");
3776: if ($hashref) {
3777: my $now = time;
3778: my %data = &hash_extract($what);
3779: my @allkeys;
3780: while (my($key,$value) = each(%data)) {
3781: push(@allkeys,$key);
3782: $hashref->{"$v:$rid:$key"} = $value;
3783: }
3784: my $allkeys = join(':',@allkeys);
3785: $hashref->{"$v:keys:$rid"}=$allkeys;
3786:
3787: if (&untie_user_hash($hashref)) {
3788: &Reply($client, "ok\n", $userinput);
3789: } else {
3790: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
3791: "while attempting store\n", $userinput);
3792: }
3793: } else {
3794: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
3795: "while attempting store\n", $userinput);
3796: }
3797: } else {
3798: &Failure($client, "refused\n", $userinput);
3799: }
3800:
3801: return 1;
3802: }
3803: ®ister_handler("putstore", \&putstore_handler, 0, 1, 0);
3804:
3805: sub hash_extract {
3806: my ($str)=@_;
3807: my %hash;
3808: foreach my $pair (split(/\&/,$str)) {
3809: my ($key,$value)=split(/=/,$pair);
3810: $hash{$key}=$value;
3811: }
3812: return (%hash);
3813: }
3814: sub hash_to_str {
3815: my ($hash_ref)=@_;
3816: my $str;
3817: foreach my $key (keys(%$hash_ref)) {
3818: $str.=$key.'='.$hash_ref->{$key}.'&';
3819: }
3820: $str=~s/\&$//;
3821: return $str;
3822: }
3823:
3824: #
3825: # Dump out all versions of a resource that has key=value pairs associated
3826: # with it for each version. These resources are built up via the store
3827: # command.
3828: #
3829: # Parameters:
3830: # $cmd - Command keyword.
3831: # $tail - Remainder of the request which consists of:
3832: # domain/user - User and auth. domain.
3833: # namespace - name of resource database.
3834: # rid - Resource id.
3835: # $client - socket open on the client.
3836: #
3837: # Returns:
3838: # 1 indicating the caller should not yet exit.
3839: # Side-effects:
3840: # Writes a reply to the client.
3841: # The reply is a string of the following shape:
3842: # version=current&version:keys=k1:k2...&1:k1=v1&1:k2=v2...
3843: # Where the 1 above represents version 1.
3844: # this continues for all pairs of keys in all versions.
3845: #
3846: #
3847: #
3848: #
3849: sub restore_handler {
3850: my ($cmd, $tail, $client) = @_;
3851:
3852: my $userinput = "$cmd:$tail"; # Only used for logging purposes.
3853: my ($udom,$uname,$namespace,$rid) = split(/:/,$tail);
3854: $namespace=~s/\//\_/g;
3855: $namespace = &LONCAPA::clean_username($namespace);
3856:
3857: chomp($rid);
3858: my $qresult='';
3859: my $hashref = &tie_user_hash($udom, $uname, $namespace, &GDBM_READER());
3860: if ($hashref) {
3861: my $version=$hashref->{"version:$rid"};
3862: $qresult.="version=$version&";
3863: my $scope;
3864: for ($scope=1;$scope<=$version;$scope++) {
3865: my $vkeys=$hashref->{"$scope:keys:$rid"};
3866: my @keys=split(/:/,$vkeys);
3867: my $key;
3868: $qresult.="$scope:keys=$vkeys&";
3869: foreach $key (@keys) {
3870: $qresult.="$scope:$key=".$hashref->{"$scope:$rid:$key"}."&";
3871: }
3872: }
3873: if (&untie_user_hash($hashref)) {
3874: $qresult=~s/\&$//;
3875: &Reply( $client, \$qresult, $userinput);
3876: } else {
3877: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
3878: "while attempting restore\n", $userinput);
3879: }
3880: } else {
3881: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
3882: "while attempting restore\n", $userinput);
3883: }
3884:
3885: return 1;
3886:
3887:
3888: }
3889: ®ister_handler("restore", \&restore_handler, 0,1,0);
3890:
3891: #
3892: # Add a chat message to a synchronous discussion board.
3893: #
3894: # Parameters:
3895: # $cmd - Request keyword.
3896: # $tail - Tail of the command. A colon separated list
3897: # containing:
3898: # cdom - Domain on which the chat board lives
3899: # cnum - Course containing the chat board.
3900: # newpost - Body of the posting.
3901: # group - Optional group, if chat board is only
3902: # accessible in a group within the course
3903: # $client - Socket open on the client.
3904: # Returns:
3905: # 1 - Indicating caller should keep on processing.
3906: #
3907: # Side-effects:
3908: # writes a reply to the client.
3909: #
3910: #
3911: sub send_chat_handler {
3912: my ($cmd, $tail, $client) = @_;
3913:
3914:
3915: my $userinput = "$cmd:$tail";
3916:
3917: my ($cdom,$cnum,$newpost,$group)=split(/\:/,$tail);
3918: &chat_add($cdom,$cnum,$newpost,$group);
3919: &Reply($client, "ok\n", $userinput);
3920:
3921: return 1;
3922: }
3923: ®ister_handler("chatsend", \&send_chat_handler, 0, 1, 0);
3924:
3925: #
3926: # Retrieve the set of chat messages from a discussion board.
3927: #
3928: # Parameters:
3929: # $cmd - Command keyword that initiated the request.
3930: # $tail - Remainder of the request after the command
3931: # keyword. In this case a colon separated list of
3932: # chat domain - Which discussion board.
3933: # chat id - Discussion thread(?)
3934: # domain/user - Authentication domain and username
3935: # of the requesting person.
3936: # group - Optional course group containing
3937: # the board.
3938: # $client - Socket open on the client program.
3939: # Returns:
3940: # 1 - continue processing
3941: # Side effects:
3942: # Response is written to the client.
3943: #
3944: sub retrieve_chat_handler {
3945: my ($cmd, $tail, $client) = @_;
3946:
3947:
3948: my $userinput = "$cmd:$tail";
3949:
3950: my ($cdom,$cnum,$udom,$uname,$group)=split(/\:/,$tail);
3951: my $reply='';
3952: foreach (&get_chat($cdom,$cnum,$udom,$uname,$group)) {
3953: $reply.=&escape($_).':';
3954: }
3955: $reply=~s/\:$//;
3956: &Reply($client, \$reply, $userinput);
3957:
3958:
3959: return 1;
3960: }
3961: ®ister_handler("chatretr", \&retrieve_chat_handler, 0, 1, 0);
3962:
3963: #
3964: # Initiate a query of an sql database. SQL query repsonses get put in
3965: # a file for later retrieval. This prevents sql query results from
3966: # bottlenecking the system. Note that with loncnew, perhaps this is
3967: # less of an issue since multiple outstanding requests can be concurrently
3968: # serviced.
3969: #
3970: # Parameters:
3971: # $cmd - Command keyword that initiated the request.
3972: # $tail - Remainder of the command after the keyword.
3973: # For this function, this consists of a query and
3974: # 3 arguments that are self-documentingly labelled
3975: # in the original arg1, arg2, arg3.
3976: # $client - Socket open on the client.
3977: # Return:
3978: # 1 - Indicating processing should continue.
3979: # Side-effects:
3980: # a reply is written to $client.
3981: #
3982: sub send_query_handler {
3983: my ($cmd, $tail, $client) = @_;
3984:
3985: my $userinput = "$cmd:$tail";
3986:
3987: my ($query,$arg1,$arg2,$arg3)=split(/\:/,$tail);
3988: $query=~s/\n*$//g;
3989: if (($query eq 'usersearch') || ($query eq 'instdirsearch')) {
3990: my $usersearchconf = &get_usersearch_config($currentdomainid,'directorysrch');
3991: my $earlyout;
3992: if (ref($usersearchconf) eq 'HASH') {
3993: if ($currentdomainid eq $clienthomedom) {
3994: if ($query eq 'usersearch') {
3995: if ($usersearchconf->{'lcavailable'} eq '0') {
3996: $earlyout = 1;
3997: }
3998: } else {
3999: if ($usersearchconf->{'available'} eq '0') {
4000: $earlyout = 1;
4001: }
4002: }
4003: } else {
4004: if ($query eq 'usersearch') {
4005: if ($usersearchconf->{'lclocalonly'}) {
4006: $earlyout = 1;
4007: }
4008: } else {
4009: if ($usersearchconf->{'localonly'}) {
4010: $earlyout = 1;
4011: }
4012: }
4013: }
4014: }
4015: if ($earlyout) {
4016: &Reply($client, "query_not_authorized\n");
4017: return 1;
4018: }
4019: }
4020: &Reply($client, "". &sql_reply("$clientname\&$query".
4021: "\&$arg1"."\&$arg2"."\&$arg3")."\n",
4022: $userinput);
4023:
4024: return 1;
4025: }
4026: ®ister_handler("querysend", \&send_query_handler, 0, 1, 0);
4027:
4028: #
4029: # Add a reply to an sql query. SQL queries are done asyncrhonously.
4030: # The query is submitted via a "querysend" transaction.
4031: # There it is passed on to the lonsql daemon, queued and issued to
4032: # mysql.
4033: # This transaction is invoked when the sql transaction is complete
4034: # it stores the query results in flie and indicates query completion.
4035: # presumably local software then fetches this response... I'm guessing
4036: # the sequence is: lonc does a querysend, we ask lonsql to do it.
4037: # lonsql on completion of the query interacts with the lond of our
4038: # client to do a query reply storing two files:
4039: # - id - The results of the query.
4040: # - id.end - Indicating the transaction completed.
4041: # NOTE: id is a unique id assigned to the query and querysend time.
4042: # Parameters:
4043: # $cmd - Command keyword that initiated this request.
4044: # $tail - Remainder of the tail. In this case that's a colon
4045: # separated list containing the query Id and the
4046: # results of the query.
4047: # $client - Socket open on the client.
4048: # Return:
4049: # 1 - Indicating that we should continue processing.
4050: # Side effects:
4051: # ok written to the client.
4052: #
4053: sub reply_query_handler {
4054: my ($cmd, $tail, $client) = @_;
4055:
4056:
4057: my $userinput = "$cmd:$tail";
4058:
4059: my ($id,$reply)=split(/:/,$tail);
4060: my $store;
4061: my $execdir=$perlvar{'lonDaemons'};
4062: if ($store=IO::File->new(">$execdir/tmp/$id")) {
4063: $reply=~s/\&/\n/g;
4064: print $store $reply;
4065: close $store;
4066: my $store2=IO::File->new(">$execdir/tmp/$id.end");
4067: print $store2 "done\n";
4068: close $store2;
4069: &Reply($client, "ok\n", $userinput);
4070: } else {
4071: &Failure($client, "error: ".($!+0)
4072: ." IO::File->new Failed ".
4073: "while attempting queryreply\n", $userinput);
4074: }
4075:
4076:
4077: return 1;
4078: }
4079: ®ister_handler("queryreply", \&reply_query_handler, 0, 1, 0);
4080:
4081: #
4082: # Process the courseidput request. Not quite sure what this means
4083: # at the system level sense. It appears a gdbm file in the
4084: # /home/httpd/lonUsers/$domain/nohist_courseids is tied and
4085: # a set of entries made in that database.
4086: #
4087: # Parameters:
4088: # $cmd - The command keyword that initiated this request.
4089: # $tail - Tail of the command. In this case consists of a colon
4090: # separated list contaning the domain to apply this to and
4091: # an ampersand separated list of keyword=value pairs.
4092: # Each value is a colon separated list that includes:
4093: # description, institutional code and course owner.
4094: # For backward compatibility with versions included
4095: # in LON-CAPA 1.1.X (and earlier) and 1.2.X, institutional
4096: # code and/or course owner are preserved from the existing
4097: # record when writing a new record in response to 1.1 or
4098: # 1.2 implementations of lonnet::flushcourselogs().
4099: #
4100: # $client - Socket open on the client.
4101: # Returns:
4102: # 1 - indicating that processing should continue
4103: #
4104: # Side effects:
4105: # reply is written to the client.
4106: #
4107: sub put_course_id_handler {
4108: my ($cmd, $tail, $client) = @_;
4109:
4110:
4111: my $userinput = "$cmd:$tail";
4112:
4113: my ($udom, $what) = split(/:/, $tail,2);
4114: chomp($what);
4115: my $now=time;
4116: my @pairs=split(/\&/,$what);
4117:
4118: my $hashref = &tie_domain_hash($udom, "nohist_courseids", &GDBM_WRCREAT());
4119: if ($hashref) {
4120: foreach my $pair (@pairs) {
4121: my ($key,$courseinfo) = split(/=/,$pair,2);
4122: $courseinfo =~ s/=/:/g;
4123: if (defined($hashref->{$key})) {
4124: my $value = &Apache::lonnet::thaw_unescape($hashref->{$key});
4125: if (ref($value) eq 'HASH') {
4126: my @items = ('description','inst_code','owner','type');
4127: my @new_items = split(/:/,$courseinfo,-1);
4128: my %storehash;
4129: for (my $i=0; $i<@new_items; $i++) {
4130: $storehash{$items[$i]} = &unescape($new_items[$i]);
4131: }
4132: $hashref->{$key} =
4133: &Apache::lonnet::freeze_escape(\%storehash);
4134: my $unesc_key = &unescape($key);
4135: $hashref->{&escape('lasttime:'.$unesc_key)} = $now;
4136: next;
4137: }
4138: }
4139: my @current_items = split(/:/,$hashref->{$key},-1);
4140: shift(@current_items); # remove description
4141: pop(@current_items); # remove last access
4142: my $numcurrent = scalar(@current_items);
4143: if ($numcurrent > 3) {
4144: $numcurrent = 3;
4145: }
4146: my @new_items = split(/:/,$courseinfo,-1);
4147: my $numnew = scalar(@new_items);
4148: if ($numcurrent > 0) {
4149: if ($numnew <= $numcurrent) { # flushcourselogs() from pre 2.2
4150: for (my $j=$numcurrent-$numnew; $j>=0; $j--) {
4151: $courseinfo .= ':'.$current_items[$numcurrent-$j-1];
4152: }
4153: }
4154: }
4155: $hashref->{$key}=$courseinfo.':'.$now;
4156: }
4157: if (&untie_domain_hash($hashref)) {
4158: &Reply( $client, "ok\n", $userinput);
4159: } else {
4160: &Failure($client, "error: ".($!+0)
4161: ." untie(GDBM) Failed ".
4162: "while attempting courseidput\n", $userinput);
4163: }
4164: } else {
4165: &Failure($client, "error: ".($!+0)
4166: ." tie(GDBM) Failed ".
4167: "while attempting courseidput\n", $userinput);
4168: }
4169:
4170: return 1;
4171: }
4172: ®ister_handler("courseidput", \&put_course_id_handler, 0, 1, 0);
4173:
4174: sub put_course_id_hash_handler {
4175: my ($cmd, $tail, $client) = @_;
4176: my $userinput = "$cmd:$tail";
4177: my ($udom,$mode,$what) = split(/:/, $tail,3);
4178: chomp($what);
4179: my $now=time;
4180: my @pairs=split(/\&/,$what);
4181: my $hashref = &tie_domain_hash($udom, "nohist_courseids", &GDBM_WRCREAT());
4182: if ($hashref) {
4183: foreach my $pair (@pairs) {
4184: my ($key,$value)=split(/=/,$pair);
4185: my $unesc_key = &unescape($key);
4186: if ($mode ne 'timeonly') {
4187: if (!defined($hashref->{&escape('lasttime:'.$unesc_key)})) {
4188: my $curritems = &Apache::lonnet::thaw_unescape($key);
4189: if (ref($curritems) ne 'HASH') {
4190: my @current_items = split(/:/,$hashref->{$key},-1);
4191: my $lasttime = pop(@current_items);
4192: $hashref->{&escape('lasttime:'.$unesc_key)} = $lasttime;
4193: } else {
4194: $hashref->{&escape('lasttime:'.$unesc_key)} = '';
4195: }
4196: }
4197: $hashref->{$key} = $value;
4198: }
4199: if ($mode ne 'notime') {
4200: $hashref->{&escape('lasttime:'.$unesc_key)} = $now;
4201: }
4202: }
4203: if (&untie_domain_hash($hashref)) {
4204: &Reply($client, "ok\n", $userinput);
4205: } else {
4206: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4207: "while attempting courseidputhash\n", $userinput);
4208: }
4209: } else {
4210: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
4211: "while attempting courseidputhash\n", $userinput);
4212: }
4213: return 1;
4214: }
4215: ®ister_handler("courseidputhash", \&put_course_id_hash_handler, 0, 1, 0);
4216:
4217: # Retrieves the value of a course id resource keyword pattern
4218: # defined since a starting date. Both the starting date and the
4219: # keyword pattern are optional. If the starting date is not supplied it
4220: # is treated as the beginning of time. If the pattern is not found,
4221: # it is treatred as "." matching everything.
4222: #
4223: # Parameters:
4224: # $cmd - Command keyword that resulted in us being dispatched.
4225: # $tail - The remainder of the command that, in this case, consists
4226: # of a colon separated list of:
4227: # domain - The domain in which the course database is
4228: # defined.
4229: # since - Optional parameter describing the minimum
4230: # time of definition(?) of the resources that
4231: # will match the dump.
4232: # description - regular expression that is used to filter
4233: # the dump. Only keywords matching this regexp
4234: # will be used.
4235: # institutional code - optional supplied code to filter
4236: # the dump. Only courses with an institutional code
4237: # that match the supplied code will be returned.
4238: # owner - optional supplied username and domain of owner to
4239: # filter the dump. Only courses for which the course
4240: # owner matches the supplied username and/or domain
4241: # will be returned. Pre-2.2.0 legacy entries from
4242: # nohist_courseiddump will only contain usernames.
4243: # type - optional parameter for selection
4244: # regexp_ok - if 1 or -1 allow the supplied institutional code
4245: # filter to behave as a regular expression:
4246: # 1 will not exclude the course if the instcode matches the RE
4247: # -1 will exclude the course if the instcode matches the RE
4248: # rtn_as_hash - whether to return the information available for
4249: # each matched item as a frozen hash of all
4250: # key, value pairs in the item's hash, or as a
4251: # colon-separated list of (in order) description,
4252: # institutional code, and course owner.
4253: # selfenrollonly - filter by courses allowing self-enrollment
4254: # now or in the future (selfenrollonly = 1).
4255: # catfilter - filter by course category, assigned to a course
4256: # using manually defined categories (i.e., not
4257: # self-cataloging based on on institutional code).
4258: # showhidden - include course in results even if course
4259: # was set to be excluded from course catalog (DC only).
4260: # caller - if set to 'coursecatalog', courses set to be hidden
4261: # from course catalog will be excluded from results (unless
4262: # overridden by "showhidden".
4263: # cloner - escaped username:domain of course cloner (if picking course to
4264: # clone).
4265: # cc_clone_list - escaped comma separated list of courses for which
4266: # course cloner has active CC role (and so can clone
4267: # automatically).
4268: # cloneonly - filter by courses for which cloner has rights to clone.
4269: # createdbefore - include courses for which creation date preceeded this date.
4270: # createdafter - include courses for which creation date followed this date.
4271: # creationcontext - include courses created in specified context
4272: #
4273: # domcloner - flag to indicate if user can create CCs in course's domain.
4274: # If so, ability to clone course is automatic.
4275: # hasuniquecode - filter by courses for which a six character unique code has
4276: # been set.
4277: #
4278: # $client - The socket open on the client.
4279: # Returns:
4280: # 1 - Continue processing.
4281: # Side Effects:
4282: # a reply is written to $client.
4283: sub dump_course_id_handler {
4284: my ($cmd, $tail, $client) = @_;
4285:
4286: my $res = LONCAPA::Lond::dump_course_id_handler($tail);
4287: if ($res =~ /^error:/) {
4288: Failure($client, \$res, "$cmd:$tail");
4289: } else {
4290: Reply($client, \$res, "$cmd:$tail");
4291: }
4292:
4293: return 1;
4294:
4295: #TODO remove
4296: my $userinput = "$cmd:$tail";
4297:
4298: my ($udom,$since,$description,$instcodefilter,$ownerfilter,$coursefilter,
4299: $typefilter,$regexp_ok,$rtn_as_hash,$selfenrollonly,$catfilter,$showhidden,
4300: $caller,$cloner,$cc_clone_list,$cloneonly,$createdbefore,$createdafter,
4301: $creationcontext,$domcloner,$hasuniquecode) =split(/:/,$tail);
4302: my $now = time;
4303: my ($cloneruname,$clonerudom,%cc_clone);
4304: if (defined($description)) {
4305: $description=&unescape($description);
4306: } else {
4307: $description='.';
4308: }
4309: if (defined($instcodefilter)) {
4310: $instcodefilter=&unescape($instcodefilter);
4311: } else {
4312: $instcodefilter='.';
4313: }
4314: my ($ownerunamefilter,$ownerdomfilter);
4315: if (defined($ownerfilter)) {
4316: $ownerfilter=&unescape($ownerfilter);
4317: if ($ownerfilter ne '.' && defined($ownerfilter)) {
4318: if ($ownerfilter =~ /^([^:]*):([^:]*)$/) {
4319: $ownerunamefilter = $1;
4320: $ownerdomfilter = $2;
4321: } else {
4322: $ownerunamefilter = $ownerfilter;
4323: $ownerdomfilter = '';
4324: }
4325: }
4326: } else {
4327: $ownerfilter='.';
4328: }
4329:
4330: if (defined($coursefilter)) {
4331: $coursefilter=&unescape($coursefilter);
4332: } else {
4333: $coursefilter='.';
4334: }
4335: if (defined($typefilter)) {
4336: $typefilter=&unescape($typefilter);
4337: } else {
4338: $typefilter='.';
4339: }
4340: if (defined($regexp_ok)) {
4341: $regexp_ok=&unescape($regexp_ok);
4342: }
4343: if (defined($catfilter)) {
4344: $catfilter=&unescape($catfilter);
4345: }
4346: if (defined($cloner)) {
4347: $cloner = &unescape($cloner);
4348: ($cloneruname,$clonerudom) = ($cloner =~ /^($LONCAPA::match_username):($LONCAPA::match_domain)$/);
4349: }
4350: if (defined($cc_clone_list)) {
4351: $cc_clone_list = &unescape($cc_clone_list);
4352: my @cc_cloners = split('&',$cc_clone_list);
4353: foreach my $cid (@cc_cloners) {
4354: my ($clonedom,$clonenum) = split(':',$cid);
4355: next if ($clonedom ne $udom);
4356: $cc_clone{$clonedom.'_'.$clonenum} = 1;
4357: }
4358: }
4359: if ($createdbefore ne '') {
4360: $createdbefore = &unescape($createdbefore);
4361: } else {
4362: $createdbefore = 0;
4363: }
4364: if ($createdafter ne '') {
4365: $createdafter = &unescape($createdafter);
4366: } else {
4367: $createdafter = 0;
4368: }
4369: if ($creationcontext ne '') {
4370: $creationcontext = &unescape($creationcontext);
4371: } else {
4372: $creationcontext = '.';
4373: }
4374: unless ($hasuniquecode) {
4375: $hasuniquecode = '.';
4376: }
4377: my $unpack = 1;
4378: if ($description eq '.' && $instcodefilter eq '.' && $ownerfilter eq '.' &&
4379: $typefilter eq '.') {
4380: $unpack = 0;
4381: }
4382: if (!defined($since)) { $since=0; }
4383: my $qresult='';
4384: my $hashref = &tie_domain_hash($udom, "nohist_courseids", &GDBM_WRCREAT());
4385: if ($hashref) {
4386: while (my ($key,$value) = each(%$hashref)) {
4387: my ($unesc_key,$lasttime_key,$lasttime,$is_hash,%val,
4388: %unesc_val,$selfenroll_end,$selfenroll_types,$created,
4389: $context);
4390: $unesc_key = &unescape($key);
4391: if ($unesc_key =~ /^lasttime:/) {
4392: next;
4393: } else {
4394: $lasttime_key = &escape('lasttime:'.$unesc_key);
4395: }
4396: if ($hashref->{$lasttime_key} ne '') {
4397: $lasttime = $hashref->{$lasttime_key};
4398: next if ($lasttime<$since);
4399: }
4400: my ($canclone,$valchange);
4401: my $items = &Apache::lonnet::thaw_unescape($value);
4402: if (ref($items) eq 'HASH') {
4403: if ($hashref->{$lasttime_key} eq '') {
4404: next if ($since > 1);
4405: }
4406: $is_hash = 1;
4407: if ($domcloner) {
4408: $canclone = 1;
4409: } elsif (defined($clonerudom)) {
4410: if ($items->{'cloners'}) {
4411: my @cloneable = split(',',$items->{'cloners'});
4412: if (@cloneable) {
4413: if (grep(/^\*$/,@cloneable)) {
4414: $canclone = 1;
4415: } elsif (grep(/^\*:\Q$clonerudom\E$/,@cloneable)) {
4416: $canclone = 1;
4417: } elsif (grep(/^\Q$cloneruname\E:\Q$clonerudom\E$/,@cloneable)) {
4418: $canclone = 1;
4419: }
4420: }
4421: unless ($canclone) {
4422: if ($cloneruname ne '' && $clonerudom ne '') {
4423: if ($cc_clone{$unesc_key}) {
4424: $canclone = 1;
4425: $items->{'cloners'} .= ','.$cloneruname.':'.
4426: $clonerudom;
4427: $valchange = 1;
4428: }
4429: }
4430: }
4431: } elsif (defined($cloneruname)) {
4432: if ($cc_clone{$unesc_key}) {
4433: $canclone = 1;
4434: $items->{'cloners'} = $cloneruname.':'.$clonerudom;
4435: $valchange = 1;
4436: }
4437: unless ($canclone) {
4438: if ($items->{'owner'} =~ /:/) {
4439: if ($items->{'owner'} eq $cloner) {
4440: $canclone = 1;
4441: }
4442: } elsif ($cloner eq $items->{'owner'}.':'.$udom) {
4443: $canclone = 1;
4444: }
4445: if ($canclone) {
4446: $items->{'cloners'} = $cloneruname.':'.$clonerudom;
4447: $valchange = 1;
4448: }
4449: }
4450: }
4451: }
4452: if ($unpack || !$rtn_as_hash) {
4453: $unesc_val{'descr'} = $items->{'description'};
4454: $unesc_val{'inst_code'} = $items->{'inst_code'};
4455: $unesc_val{'owner'} = $items->{'owner'};
4456: $unesc_val{'type'} = $items->{'type'};
4457: $unesc_val{'cloners'} = $items->{'cloners'};
4458: $unesc_val{'created'} = $items->{'created'};
4459: $unesc_val{'context'} = $items->{'context'};
4460: }
4461: $selfenroll_types = $items->{'selfenroll_types'};
4462: $selfenroll_end = $items->{'selfenroll_end_date'};
4463: $created = $items->{'created'};
4464: $context = $items->{'context'};
4465: if ($hasuniquecode ne '.') {
4466: next unless ($items->{'uniquecode'});
4467: }
4468: if ($selfenrollonly) {
4469: next if (!$selfenroll_types);
4470: if (($selfenroll_end > 0) && ($selfenroll_end <= $now)) {
4471: next;
4472: }
4473: }
4474: if ($creationcontext ne '.') {
4475: next if (($context ne '') && ($context ne $creationcontext));
4476: }
4477: if ($createdbefore > 0) {
4478: next if (($created eq '') || ($created > $createdbefore));
4479: }
4480: if ($createdafter > 0) {
4481: next if (($created eq '') || ($created <= $createdafter));
4482: }
4483: if ($catfilter ne '') {
4484: next if ($items->{'categories'} eq '');
4485: my @categories = split('&',$items->{'categories'});
4486: next if (@categories == 0);
4487: my @subcats = split('&',$catfilter);
4488: my $matchcat = 0;
4489: foreach my $cat (@categories) {
4490: if (grep(/^\Q$cat\E$/,@subcats)) {
4491: $matchcat = 1;
4492: last;
4493: }
4494: }
4495: next if (!$matchcat);
4496: }
4497: if ($caller eq 'coursecatalog') {
4498: if ($items->{'hidefromcat'} eq 'yes') {
4499: next if !$showhidden;
4500: }
4501: }
4502: } else {
4503: next if ($catfilter ne '');
4504: next if ($selfenrollonly);
4505: next if ($createdbefore || $createdafter);
4506: next if ($creationcontext ne '.');
4507: if ((defined($clonerudom)) && (defined($cloneruname))) {
4508: if ($cc_clone{$unesc_key}) {
4509: $canclone = 1;
4510: $val{'cloners'} = &escape($cloneruname.':'.$clonerudom);
4511: }
4512: }
4513: $is_hash = 0;
4514: my @courseitems = split(/:/,$value);
4515: $lasttime = pop(@courseitems);
4516: if ($hashref->{$lasttime_key} eq '') {
4517: next if ($lasttime<$since);
4518: }
4519: ($val{'descr'},$val{'inst_code'},$val{'owner'},$val{'type'}) = @courseitems;
4520: }
4521: if ($cloneonly) {
4522: next unless ($canclone);
4523: }
4524: my $match = 1;
4525: if ($description ne '.') {
4526: if (!$is_hash) {
4527: $unesc_val{'descr'} = &unescape($val{'descr'});
4528: }
4529: if (eval{$unesc_val{'descr'} !~ /\Q$description\E/i}) {
4530: $match = 0;
4531: }
4532: }
4533: if ($instcodefilter ne '.') {
4534: if (!$is_hash) {
4535: $unesc_val{'inst_code'} = &unescape($val{'inst_code'});
4536: }
4537: if ($regexp_ok == 1) {
4538: if (eval{$unesc_val{'inst_code'} !~ /$instcodefilter/}) {
4539: $match = 0;
4540: }
4541: } elsif ($regexp_ok == -1) {
4542: if (eval{$unesc_val{'inst_code'} =~ /$instcodefilter/}) {
4543: $match = 0;
4544: }
4545: } else {
4546: if (eval{$unesc_val{'inst_code'} !~ /\Q$instcodefilter\E/i}) {
4547: $match = 0;
4548: }
4549: }
4550: }
4551: if ($ownerfilter ne '.') {
4552: if (!$is_hash) {
4553: $unesc_val{'owner'} = &unescape($val{'owner'});
4554: }
4555: if (($ownerunamefilter ne '') && ($ownerdomfilter ne '')) {
4556: if ($unesc_val{'owner'} =~ /:/) {
4557: if (eval{$unesc_val{'owner'} !~
4558: /\Q$ownerunamefilter\E:\Q$ownerdomfilter\E$/i}) {
4559: $match = 0;
4560: }
4561: } else {
4562: if (eval{$unesc_val{'owner'} !~ /\Q$ownerunamefilter\E/i}) {
4563: $match = 0;
4564: }
4565: }
4566: } elsif ($ownerunamefilter ne '') {
4567: if ($unesc_val{'owner'} =~ /:/) {
4568: if (eval{$unesc_val{'owner'} !~ /\Q$ownerunamefilter\E:[^:]+$/i}) {
4569: $match = 0;
4570: }
4571: } else {
4572: if (eval{$unesc_val{'owner'} !~ /\Q$ownerunamefilter\E/i}) {
4573: $match = 0;
4574: }
4575: }
4576: } elsif ($ownerdomfilter ne '') {
4577: if ($unesc_val{'owner'} =~ /:/) {
4578: if (eval{$unesc_val{'owner'} !~ /^[^:]+:\Q$ownerdomfilter\E/}) {
4579: $match = 0;
4580: }
4581: } else {
4582: if ($ownerdomfilter ne $udom) {
4583: $match = 0;
4584: }
4585: }
4586: }
4587: }
4588: if ($coursefilter ne '.') {
4589: if (eval{$unesc_key !~ /^$udom(_)\Q$coursefilter\E$/}) {
4590: $match = 0;
4591: }
4592: }
4593: if ($typefilter ne '.') {
4594: if (!$is_hash) {
4595: $unesc_val{'type'} = &unescape($val{'type'});
4596: }
4597: if ($unesc_val{'type'} eq '') {
4598: if ($typefilter ne 'Course') {
4599: $match = 0;
4600: }
4601: } else {
4602: if (eval{$unesc_val{'type'} !~ /^\Q$typefilter\E$/}) {
4603: $match = 0;
4604: }
4605: }
4606: }
4607: if ($match == 1) {
4608: if ($rtn_as_hash) {
4609: if ($is_hash) {
4610: if ($valchange) {
4611: my $newvalue = &Apache::lonnet::freeze_escape($items);
4612: $qresult.=$key.'='.$newvalue.'&';
4613: } else {
4614: $qresult.=$key.'='.$value.'&';
4615: }
4616: } else {
4617: my %rtnhash = ( 'description' => &unescape($val{'descr'}),
4618: 'inst_code' => &unescape($val{'inst_code'}),
4619: 'owner' => &unescape($val{'owner'}),
4620: 'type' => &unescape($val{'type'}),
4621: 'cloners' => &unescape($val{'cloners'}),
4622: );
4623: my $items = &Apache::lonnet::freeze_escape(\%rtnhash);
4624: $qresult.=$key.'='.$items.'&';
4625: }
4626: } else {
4627: if ($is_hash) {
4628: $qresult .= $key.'='.&escape($unesc_val{'descr'}).':'.
4629: &escape($unesc_val{'inst_code'}).':'.
4630: &escape($unesc_val{'owner'}).'&';
4631: } else {
4632: $qresult .= $key.'='.$val{'descr'}.':'.$val{'inst_code'}.
4633: ':'.$val{'owner'}.'&';
4634: }
4635: }
4636: }
4637: }
4638: if (&untie_domain_hash($hashref)) {
4639: chop($qresult);
4640: &Reply($client, \$qresult, $userinput);
4641: } else {
4642: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4643: "while attempting courseiddump\n", $userinput);
4644: }
4645: } else {
4646: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
4647: "while attempting courseiddump\n", $userinput);
4648: }
4649: return 1;
4650: }
4651: ®ister_handler("courseiddump", \&dump_course_id_handler, 0, 1, 0);
4652:
4653: sub course_lastaccess_handler {
4654: my ($cmd, $tail, $client) = @_;
4655: my $userinput = "$cmd:$tail";
4656: my ($cdom,$cnum) = split(':',$tail);
4657: my (%lastaccess,$qresult);
4658: my $hashref = &tie_domain_hash($cdom, "nohist_courseids", &GDBM_WRCREAT());
4659: if ($hashref) {
4660: while (my ($key,$value) = each(%$hashref)) {
4661: my ($unesc_key,$lasttime);
4662: $unesc_key = &unescape($key);
4663: if ($cnum) {
4664: next unless ($unesc_key =~ /\Q$cdom\E_\Q$cnum\E$/);
4665: }
4666: if ($unesc_key =~ /^lasttime:($LONCAPA::match_domain\_$LONCAPA::match_courseid)/) {
4667: $lastaccess{$1} = $value;
4668: } else {
4669: my $items = &Apache::lonnet::thaw_unescape($value);
4670: if (ref($items) eq 'HASH') {
4671: unless ($lastaccess{$unesc_key}) {
4672: $lastaccess{$unesc_key} = '';
4673: }
4674: } else {
4675: my @courseitems = split(':',$value);
4676: $lastaccess{$unesc_key} = pop(@courseitems);
4677: }
4678: }
4679: }
4680: foreach my $cid (sort(keys(%lastaccess))) {
4681: $qresult.=&escape($cid).'='.$lastaccess{$cid}.'&';
4682: }
4683: if (&untie_domain_hash($hashref)) {
4684: if ($qresult) {
4685: chop($qresult);
4686: }
4687: &Reply($client, \$qresult, $userinput);
4688: } else {
4689: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4690: "while attempting lastacourseaccess\n", $userinput);
4691: }
4692: } else {
4693: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
4694: "while attempting lastcourseaccess\n", $userinput);
4695: }
4696: return 1;
4697: }
4698: ®ister_handler("courselastaccess",\&course_lastaccess_handler, 0, 1, 0);
4699:
4700: #
4701: # Puts an unencrypted entry in a namespace db file at the domain level
4702: #
4703: # Parameters:
4704: # $cmd - The command that got us here.
4705: # $tail - Tail of the command (remaining parameters).
4706: # $client - File descriptor connected to client.
4707: # Returns
4708: # 0 - Requested to exit, caller should shut down.
4709: # 1 - Continue processing.
4710: # Side effects:
4711: # reply is written to $client.
4712: #
4713: sub put_domain_handler {
4714: my ($cmd,$tail,$client) = @_;
4715:
4716: my $userinput = "$cmd:$tail";
4717:
4718: my ($udom,$namespace,$what) =split(/:/,$tail,3);
4719: chomp($what);
4720: my @pairs=split(/\&/,$what);
4721: my $hashref = &tie_domain_hash($udom, "$namespace", &GDBM_WRCREAT(),
4722: "P", $what);
4723: if ($hashref) {
4724: foreach my $pair (@pairs) {
4725: my ($key,$value)=split(/=/,$pair);
4726: $hashref->{$key}=$value;
4727: }
4728: if (&untie_domain_hash($hashref)) {
4729: &Reply($client, "ok\n", $userinput);
4730: } else {
4731: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4732: "while attempting putdom\n", $userinput);
4733: }
4734: } else {
4735: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
4736: "while attempting putdom\n", $userinput);
4737: }
4738:
4739: return 1;
4740: }
4741: ®ister_handler("putdom", \&put_domain_handler, 0, 1, 0);
4742:
4743: # Updates one or more entries in clickers.db file at the domain level
4744: #
4745: # Parameters:
4746: # $cmd - The command that got us here.
4747: # $tail - Tail of the command (remaining parameters).
4748: # In this case a colon separated list containing:
4749: # (a) the domain for which we are updating the entries,
4750: # (b) the action required -- add or del -- and
4751: # (c) a &-separated list of entries to add or delete.
4752: # $client - File descriptor connected to client.
4753: # Returns
4754: # 1 - Continue processing.
4755: # 0 - Requested to exit, caller should shut down.
4756: # Side effects:
4757: # reply is written to $client.
4758: #
4759:
4760:
4761: sub update_clickers {
4762: my ($cmd, $tail, $client) = @_;
4763:
4764: my $userinput = "$cmd:$tail";
4765: my ($udom,$action,$what) =split(/:/,$tail,3);
4766: chomp($what);
4767:
4768: my $hashref = &tie_domain_hash($udom, "clickers", &GDBM_WRCREAT(),
4769: "U","$action:$what");
4770:
4771: if (!$hashref) {
4772: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
4773: "while attempting updateclickers\n", $userinput);
4774: return 1;
4775: }
4776:
4777: my @pairs=split(/\&/,$what);
4778: foreach my $pair (@pairs) {
4779: my ($key,$value)=split(/=/,$pair);
4780: if ($action eq 'add') {
4781: if (exists($hashref->{$key})) {
4782: my @newvals = split(/,/,&unescape($value));
4783: my @currvals = split(/,/,&unescape($hashref->{$key}));
4784: my @merged = sort(keys(%{{map { $_ => 1 } (@newvals,@currvals)}}));
4785: $hashref->{$key}=&escape(join(',',@merged));
4786: } else {
4787: $hashref->{$key}=$value;
4788: }
4789: } elsif ($action eq 'del') {
4790: if (exists($hashref->{$key})) {
4791: my %current;
4792: map { $current{$_} = 1; } split(/,/,&unescape($hashref->{$key}));
4793: map { delete($current{$_}); } split(/,/,&unescape($value));
4794: if (keys(%current)) {
4795: $hashref->{$key}=&escape(join(',',sort(keys(%current))));
4796: } else {
4797: delete($hashref->{$key});
4798: }
4799: }
4800: }
4801: }
4802: if (&untie_user_hash($hashref)) {
4803: &Reply( $client, "ok\n", $userinput);
4804: } else {
4805: &Failure($client, "error: ".($!+0)." untie(GDBM) failed ".
4806: "while attempting put\n",
4807: $userinput);
4808: }
4809: return 1;
4810: }
4811: ®ister_handler("updateclickers", \&update_clickers, 0, 1, 0);
4812:
4813:
4814: # Deletes one or more entries in a namespace db file at the domain level
4815: #
4816: # Parameters:
4817: # $cmd - The command that got us here.
4818: # $tail - Tail of the command (remaining parameters).
4819: # In this case a colon separated list containing:
4820: # (a) the domain for which we are deleting the entries,
4821: # (b) &-separated list of keys to delete.
4822: # $client - File descriptor connected to client.
4823: # Returns
4824: # 1 - Continue processing.
4825: # 0 - Requested to exit, caller should shut down.
4826: # Side effects:
4827: # reply is written to $client.
4828: #
4829:
4830: sub del_domain_handler {
4831: my ($cmd,$tail,$client) = @_;
4832:
4833: my $userinput = "$cmd:$tail";
4834:
4835: my ($udom,$namespace,$what)=split(/:/,$tail,3);
4836: chomp($what);
4837: my $hashref = &tie_domain_hash($udom,$namespace,&GDBM_WRCREAT(),
4838: "D", $what);
4839: if ($hashref) {
4840: my @keys=split(/\&/,$what);
4841: foreach my $key (@keys) {
4842: delete($hashref->{$key});
4843: }
4844: if (&untie_user_hash($hashref)) {
4845: &Reply($client, "ok\n", $userinput);
4846: } else {
4847: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4848: "while attempting deldom\n", $userinput);
4849: }
4850: } else {
4851: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
4852: "while attempting deldom\n", $userinput);
4853: }
4854: return 1;
4855: }
4856: ®ister_handler("deldom", \&del_domain_handler, 0, 1, 0);
4857:
4858:
4859: # Unencrypted get from the namespace database file at the domain level.
4860: # This function retrieves a keyed item from a specific named database in the
4861: # domain directory.
4862: #
4863: # Parameters:
4864: # $cmd - Command request keyword (get).
4865: # $tail - Tail of the command. This is a colon separated list
4866: # consisting of the domain and the 'namespace'
4867: # which selects the gdbm file to do the lookup in,
4868: # & separated list of keys to lookup. Note that
4869: # the values are returned as an & separated list too.
4870: # $client - File descriptor open on the client.
4871: # Returns:
4872: # 1 - Continue processing.
4873: # 0 - Exit.
4874: # Side effects:
4875: # reply is written to $client.
4876: #
4877:
4878: sub get_domain_handler {
4879: my ($cmd, $tail, $client) = @_;
4880:
4881:
4882: my $userinput = "$cmd:$tail";
4883:
4884: my ($udom,$namespace,$what)=split(/:/,$tail,3);
4885: chomp($what);
4886: if ($namespace =~ /^enc/) {
4887: &Failure( $client, "refused\n", $userinput);
4888: } else {
4889: my @queries=split(/\&/,$what);
4890: my $qresult='';
4891: my $hashref = &tie_domain_hash($udom, "$namespace", &GDBM_READER());
4892: if ($hashref) {
4893: for (my $i=0;$i<=$#queries;$i++) {
4894: $qresult.="$hashref->{$queries[$i]}&";
4895: }
4896: if (&untie_domain_hash($hashref)) {
4897: $qresult=~s/\&$//;
4898: &Reply($client, \$qresult, $userinput);
4899: } else {
4900: &Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ".
4901: "while attempting getdom\n",$userinput);
4902: }
4903: } else {
4904: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
4905: "while attempting getdom\n",$userinput);
4906: }
4907: }
4908:
4909: return 1;
4910: }
4911: ®ister_handler("getdom", \&get_domain_handler, 0, 1, 0);
4912:
4913: sub encrypted_get_domain_handler {
4914: my ($cmd, $tail, $client) = @_;
4915:
4916: my $userinput = "$cmd:$tail";
4917:
4918: my ($udom,$namespace,$what)=split(/:/,$tail,3);
4919: chomp($what);
4920: my @queries=split(/\&/,$what);
4921: my $qresult='';
4922: my $hashref = &tie_domain_hash($udom, "$namespace", &GDBM_READER());
4923: if ($hashref) {
4924: for (my $i=0;$i<=$#queries;$i++) {
4925: $qresult.="$hashref->{$queries[$i]}&";
4926: }
4927: if (&untie_domain_hash($hashref)) {
4928: $qresult=~s/\&$//;
4929: if ($cipher) {
4930: my $cmdlength=length($qresult);
4931: $qresult.=" ";
4932: my $encqresult='';
4933: for (my $encidx=0;$encidx<=$cmdlength;$encidx+=8) {
4934: $encqresult.= unpack("H16",
4935: $cipher->encrypt(substr($qresult,
4936: $encidx,
4937: 8)));
4938: }
4939: &Reply( $client, "enc:$cmdlength:$encqresult\n", $userinput);
4940: } else {
4941: &Failure( $client, "error:no_key\n", $userinput);
4942: }
4943: } else {
4944: &Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ".
4945: "while attempting egetdom\n",$userinput);
4946: }
4947: } else {
4948: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
4949: "while attempting egetdom\n",$userinput);
4950: }
4951: return 1;
4952: }
4953: ®ister_handler("egetdom", \&encrypted_get_domain_handler, 1, 1, 0);
4954:
4955: #
4956: # Puts an id to a domains id database.
4957: #
4958: # Parameters:
4959: # $cmd - The command that triggered us.
4960: # $tail - Remainder of the request other than the command. This is a
4961: # colon separated list containing:
4962: # $domain - The domain for which we are writing the id.
4963: # $pairs - The id info to write... this is and & separated list
4964: # of keyword=value.
4965: # $client - Socket open on the client.
4966: # Returns:
4967: # 1 - Continue processing.
4968: # Side effects:
4969: # reply is written to $client.
4970: #
4971: sub put_id_handler {
4972: my ($cmd,$tail,$client) = @_;
4973:
4974:
4975: my $userinput = "$cmd:$tail";
4976:
4977: my ($udom,$what)=split(/:/,$tail);
4978: chomp($what);
4979: my @pairs=split(/\&/,$what);
4980: my $hashref = &tie_domain_hash($udom, "ids", &GDBM_WRCREAT(),
4981: "P", $what);
4982: if ($hashref) {
4983: foreach my $pair (@pairs) {
4984: my ($key,$value)=split(/=/,$pair);
4985: $hashref->{$key}=$value;
4986: }
4987: if (&untie_domain_hash($hashref)) {
4988: &Reply($client, "ok\n", $userinput);
4989: } else {
4990: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4991: "while attempting idput\n", $userinput);
4992: }
4993: } else {
4994: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
4995: "while attempting idput\n", $userinput);
4996: }
4997:
4998: return 1;
4999: }
5000: ®ister_handler("idput", \&put_id_handler, 0, 1, 0);
5001:
5002: #
5003: # Retrieves a set of id values from the id database.
5004: # Returns an & separated list of results, one for each requested id to the
5005: # client.
5006: #
5007: # Parameters:
5008: # $cmd - Command keyword that caused us to be dispatched.
5009: # $tail - Tail of the command. Consists of a colon separated:
5010: # domain - the domain whose id table we dump
5011: # ids Consists of an & separated list of
5012: # id keywords whose values will be fetched.
5013: # nonexisting keywords will have an empty value.
5014: # $client - Socket open on the client.
5015: #
5016: # Returns:
5017: # 1 - indicating processing should continue.
5018: # Side effects:
5019: # An & separated list of results is written to $client.
5020: #
5021: sub get_id_handler {
5022: my ($cmd, $tail, $client) = @_;
5023:
5024:
5025: my $userinput = "$client:$tail";
5026:
5027: my ($udom,$what)=split(/:/,$tail);
5028: chomp($what);
5029: my @queries=split(/\&/,$what);
5030: my $qresult='';
5031: my $hashref = &tie_domain_hash($udom, "ids", &GDBM_READER());
5032: if ($hashref) {
5033: for (my $i=0;$i<=$#queries;$i++) {
5034: $qresult.="$hashref->{$queries[$i]}&";
5035: }
5036: if (&untie_domain_hash($hashref)) {
5037: $qresult=~s/\&$//;
5038: &Reply($client, \$qresult, $userinput);
5039: } else {
5040: &Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ".
5041: "while attempting idget\n",$userinput);
5042: }
5043: } else {
5044: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
5045: "while attempting idget\n",$userinput);
5046: }
5047:
5048: return 1;
5049: }
5050: ®ister_handler("idget", \&get_id_handler, 0, 1, 0);
5051:
5052: # Deletes one or more ids in a domain's id database.
5053: #
5054: # Parameters:
5055: # $cmd - Command keyword (iddel).
5056: # $tail - Command tail. In this case a colon
5057: # separated list containing:
5058: # The domain for which we are deleting the id(s).
5059: # &-separated list of id(s) to delete.
5060: # $client - File open on client socket.
5061: # Returns:
5062: # 1 - Continue processing
5063: # 0 - Exit server.
5064: #
5065: #
5066:
5067: sub del_id_handler {
5068: my ($cmd,$tail,$client) = @_;
5069:
5070: my $userinput = "$cmd:$tail";
5071:
5072: my ($udom,$what)=split(/:/,$tail);
5073: chomp($what);
5074: my $hashref = &tie_domain_hash($udom, "ids", &GDBM_WRCREAT(),
5075: "D", $what);
5076: if ($hashref) {
5077: my @keys=split(/\&/,$what);
5078: foreach my $key (@keys) {
5079: delete($hashref->{$key});
5080: }
5081: if (&untie_user_hash($hashref)) {
5082: &Reply($client, "ok\n", $userinput);
5083: } else {
5084: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
5085: "while attempting iddel\n", $userinput);
5086: }
5087: } else {
5088: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
5089: "while attempting iddel\n", $userinput);
5090: }
5091: return 1;
5092: }
5093: ®ister_handler("iddel", \&del_id_handler, 0, 1, 0);
5094:
5095: #
5096: # Puts broadcast e-mail sent by Domain Coordinator in nohist_dcmail database
5097: #
5098: # Parameters
5099: # $cmd - Command keyword that caused us to be dispatched.
5100: # $tail - Tail of the command. Consists of a colon separated:
5101: # domain - the domain whose dcmail we are recording
5102: # email Consists of key=value pair
5103: # where key is unique msgid
5104: # and value is message (in XML)
5105: # $client - Socket open on the client.
5106: #
5107: # Returns:
5108: # 1 - indicating processing should continue.
5109: # Side effects
5110: # reply is written to $client.
5111: #
5112: sub put_dcmail_handler {
5113: my ($cmd,$tail,$client) = @_;
5114: my $userinput = "$cmd:$tail";
5115:
5116:
5117: my ($udom,$what)=split(/:/,$tail);
5118: chomp($what);
5119: my $hashref = &tie_domain_hash($udom, "nohist_dcmail", &GDBM_WRCREAT());
5120: if ($hashref) {
5121: my ($key,$value)=split(/=/,$what);
5122: $hashref->{$key}=$value;
5123: }
5124: if (&untie_domain_hash($hashref)) {
5125: &Reply($client, "ok\n", $userinput);
5126: } else {
5127: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
5128: "while attempting dcmailput\n", $userinput);
5129: }
5130: return 1;
5131: }
5132: ®ister_handler("dcmailput", \&put_dcmail_handler, 0, 1, 0);
5133:
5134: #
5135: # Retrieves broadcast e-mail from nohist_dcmail database
5136: # Returns to client an & separated list of key=value pairs,
5137: # where key is msgid and value is message information.
5138: #
5139: # Parameters
5140: # $cmd - Command keyword that caused us to be dispatched.
5141: # $tail - Tail of the command. Consists of a colon separated:
5142: # domain - the domain whose dcmail table we dump
5143: # startfilter - beginning of time window
5144: # endfilter - end of time window
5145: # sendersfilter - & separated list of username:domain
5146: # for senders to search for.
5147: # $client - Socket open on the client.
5148: #
5149: # Returns:
5150: # 1 - indicating processing should continue.
5151: # Side effects
5152: # reply (& separated list of msgid=messageinfo pairs) is
5153: # written to $client.
5154: #
5155: sub dump_dcmail_handler {
5156: my ($cmd, $tail, $client) = @_;
5157:
5158: my $userinput = "$cmd:$tail";
5159: my ($udom,$startfilter,$endfilter,$sendersfilter) = split(/:/,$tail);
5160: chomp($sendersfilter);
5161: my @senders = ();
5162: if (defined($startfilter)) {
5163: $startfilter=&unescape($startfilter);
5164: } else {
5165: $startfilter='.';
5166: }
5167: if (defined($endfilter)) {
5168: $endfilter=&unescape($endfilter);
5169: } else {
5170: $endfilter='.';
5171: }
5172: if (defined($sendersfilter)) {
5173: $sendersfilter=&unescape($sendersfilter);
5174: @senders = map { &unescape($_) } split(/\&/,$sendersfilter);
5175: }
5176:
5177: my $qresult='';
5178: my $hashref = &tie_domain_hash($udom, "nohist_dcmail", &GDBM_WRCREAT());
5179: if ($hashref) {
5180: while (my ($key,$value) = each(%$hashref)) {
5181: my $match = 1;
5182: my ($timestamp,$subj,$uname,$udom) =
5183: split(/:/,&unescape(&unescape($key)),5); # yes, twice really
5184: $subj = &unescape($subj);
5185: unless ($startfilter eq '.' || !defined($startfilter)) {
5186: if ($timestamp < $startfilter) {
5187: $match = 0;
5188: }
5189: }
5190: unless ($endfilter eq '.' || !defined($endfilter)) {
5191: if ($timestamp > $endfilter) {
5192: $match = 0;
5193: }
5194: }
5195: unless (@senders < 1) {
5196: unless (grep/^$uname:$udom$/,@senders) {
5197: $match = 0;
5198: }
5199: }
5200: if ($match == 1) {
5201: $qresult.=$key.'='.$value.'&';
5202: }
5203: }
5204: if (&untie_domain_hash($hashref)) {
5205: chop($qresult);
5206: &Reply($client, \$qresult, $userinput);
5207: } else {
5208: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
5209: "while attempting dcmaildump\n", $userinput);
5210: }
5211: } else {
5212: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
5213: "while attempting dcmaildump\n", $userinput);
5214: }
5215: return 1;
5216: }
5217:
5218: ®ister_handler("dcmaildump", \&dump_dcmail_handler, 0, 1, 0);
5219:
5220: #
5221: # Puts domain roles in nohist_domainroles database
5222: #
5223: # Parameters
5224: # $cmd - Command keyword that caused us to be dispatched.
5225: # $tail - Tail of the command. Consists of a colon separated:
5226: # domain - the domain whose roles we are recording
5227: # role - Consists of key=value pair
5228: # where key is unique role
5229: # and value is start/end date information
5230: # $client - Socket open on the client.
5231: #
5232: # Returns:
5233: # 1 - indicating processing should continue.
5234: # Side effects
5235: # reply is written to $client.
5236: #
5237:
5238: sub put_domainroles_handler {
5239: my ($cmd,$tail,$client) = @_;
5240:
5241: my $userinput = "$cmd:$tail";
5242: my ($udom,$what)=split(/:/,$tail);
5243: chomp($what);
5244: my @pairs=split(/\&/,$what);
5245: my $hashref = &tie_domain_hash($udom, "nohist_domainroles", &GDBM_WRCREAT());
5246: if ($hashref) {
5247: foreach my $pair (@pairs) {
5248: my ($key,$value)=split(/=/,$pair);
5249: $hashref->{$key}=$value;
5250: }
5251: if (&untie_domain_hash($hashref)) {
5252: &Reply($client, "ok\n", $userinput);
5253: } else {
5254: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
5255: "while attempting domroleput\n", $userinput);
5256: }
5257: } else {
5258: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
5259: "while attempting domroleput\n", $userinput);
5260: }
5261:
5262: return 1;
5263: }
5264:
5265: ®ister_handler("domroleput", \&put_domainroles_handler, 0, 1, 0);
5266:
5267: #
5268: # Retrieves domain roles from nohist_domainroles database
5269: # Returns to client an & separated list of key=value pairs,
5270: # where key is role and value is start and end date information.
5271: #
5272: # Parameters
5273: # $cmd - Command keyword that caused us to be dispatched.
5274: # $tail - Tail of the command. Consists of a colon separated:
5275: # domain - the domain whose domain roles table we dump
5276: # $client - Socket open on the client.
5277: #
5278: # Returns:
5279: # 1 - indicating processing should continue.
5280: # Side effects
5281: # reply (& separated list of role=start/end info pairs) is
5282: # written to $client.
5283: #
5284: sub dump_domainroles_handler {
5285: my ($cmd, $tail, $client) = @_;
5286:
5287: my $userinput = "$cmd:$tail";
5288: my ($udom,$startfilter,$endfilter,$rolesfilter) = split(/:/,$tail);
5289: chomp($rolesfilter);
5290: my @roles = ();
5291: if (defined($startfilter)) {
5292: $startfilter=&unescape($startfilter);
5293: } else {
5294: $startfilter='.';
5295: }
5296: if (defined($endfilter)) {
5297: $endfilter=&unescape($endfilter);
5298: } else {
5299: $endfilter='.';
5300: }
5301: if (defined($rolesfilter)) {
5302: $rolesfilter=&unescape($rolesfilter);
5303: @roles = split(/\&/,$rolesfilter);
5304: }
5305:
5306: my $hashref = &tie_domain_hash($udom, "nohist_domainroles", &GDBM_WRCREAT());
5307: if ($hashref) {
5308: my $qresult = '';
5309: while (my ($key,$value) = each(%$hashref)) {
5310: my $match = 1;
5311: my ($end,$start) = split(/:/,&unescape($value));
5312: my ($trole,$uname,$udom,$runame,$rudom,$rsec) = split(/:/,&unescape($key));
5313: unless (@roles < 1) {
5314: unless (grep/^\Q$trole\E$/,@roles) {
5315: $match = 0;
5316: next;
5317: }
5318: }
5319: unless ($startfilter eq '.' || !defined($startfilter)) {
5320: if ((defined($start)) && ($start >= $startfilter)) {
5321: $match = 0;
5322: next;
5323: }
5324: }
5325: unless ($endfilter eq '.' || !defined($endfilter)) {
5326: if ((defined($end)) && (($end > 0) && ($end <= $endfilter))) {
5327: $match = 0;
5328: next;
5329: }
5330: }
5331: if ($match == 1) {
5332: $qresult.=$key.'='.$value.'&';
5333: }
5334: }
5335: if (&untie_domain_hash($hashref)) {
5336: chop($qresult);
5337: &Reply($client, \$qresult, $userinput);
5338: } else {
5339: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
5340: "while attempting domrolesdump\n", $userinput);
5341: }
5342: } else {
5343: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
5344: "while attempting domrolesdump\n", $userinput);
5345: }
5346: return 1;
5347: }
5348:
5349: ®ister_handler("domrolesdump", \&dump_domainroles_handler, 0, 1, 0);
5350:
5351:
5352: # Process the tmpput command I'm not sure what this does.. Seems to
5353: # create a file in the lonDaemons/tmp directory of the form $id.tmp
5354: # where Id is the client's ip concatenated with a sequence number.
5355: # The file will contain some value that is passed in. Is this e.g.
5356: # a login token?
5357: #
5358: # Parameters:
5359: # $cmd - The command that got us dispatched.
5360: # $tail - The remainder of the request following $cmd:
5361: # In this case this will be the contents of the file.
5362: # $client - Socket connected to the client.
5363: # Returns:
5364: # 1 indicating processing can continue.
5365: # Side effects:
5366: # A file is created in the local filesystem.
5367: # A reply is sent to the client.
5368: sub tmp_put_handler {
5369: my ($cmd, $what, $client) = @_;
5370:
5371: my $userinput = "$cmd:$what"; # Reconstruct for logging.
5372:
5373: my ($record,$context) = split(/:/,$what);
5374: if ($context ne '') {
5375: chomp($context);
5376: $context = &unescape($context);
5377: }
5378: my ($id,$store);
5379: $tmpsnum++;
5380: if (($context eq 'resetpw') || ($context eq 'createaccount')) {
5381: $id = &md5_hex(&md5_hex(time.{}.rand().$$));
5382: } else {
5383: $id = $$.'_'.$clientip.'_'.$tmpsnum;
5384: }
5385: $id=~s/\W/\_/g;
5386: $record=~s/\n//g;
5387: my $execdir=$perlvar{'lonDaemons'};
5388: if ($store=IO::File->new(">$execdir/tmp/$id.tmp")) {
5389: print $store $record;
5390: close $store;
5391: &Reply($client, \$id, $userinput);
5392: } else {
5393: &Failure( $client, "error: ".($!+0)."IO::File->new Failed ".
5394: "while attempting tmpput\n", $userinput);
5395: }
5396: return 1;
5397:
5398: }
5399: ®ister_handler("tmpput", \&tmp_put_handler, 0, 1, 0);
5400:
5401: # Processes the tmpget command. This command returns the contents
5402: # of a temporary resource file(?) created via tmpput.
5403: #
5404: # Paramters:
5405: # $cmd - Command that got us dispatched.
5406: # $id - Tail of the command, contain the id of the resource
5407: # we want to fetch.
5408: # $client - socket open on the client.
5409: # Return:
5410: # 1 - Inidcating processing can continue.
5411: # Side effects:
5412: # A reply is sent to the client.
5413: #
5414: sub tmp_get_handler {
5415: my ($cmd, $id, $client) = @_;
5416:
5417: my $userinput = "$cmd:$id";
5418:
5419:
5420: $id=~s/\W/\_/g;
5421: my $store;
5422: my $execdir=$perlvar{'lonDaemons'};
5423: if ($store=IO::File->new("$execdir/tmp/$id.tmp")) {
5424: my $reply=<$store>;
5425: &Reply( $client, \$reply, $userinput);
5426: close $store;
5427: } else {
5428: &Failure( $client, "error: ".($!+0)."IO::File->new Failed ".
5429: "while attempting tmpget\n", $userinput);
5430: }
5431:
5432: return 1;
5433: }
5434: ®ister_handler("tmpget", \&tmp_get_handler, 0, 1, 0);
5435:
5436: #
5437: # Process the tmpdel command. This command deletes a temp resource
5438: # created by the tmpput command.
5439: #
5440: # Parameters:
5441: # $cmd - Command that got us here.
5442: # $id - Id of the temporary resource created.
5443: # $client - socket open on the client process.
5444: #
5445: # Returns:
5446: # 1 - Indicating processing should continue.
5447: # Side Effects:
5448: # A file is deleted
5449: # A reply is sent to the client.
5450: sub tmp_del_handler {
5451: my ($cmd, $id, $client) = @_;
5452:
5453: my $userinput= "$cmd:$id";
5454:
5455: chomp($id);
5456: $id=~s/\W/\_/g;
5457: my $execdir=$perlvar{'lonDaemons'};
5458: if (unlink("$execdir/tmp/$id.tmp")) {
5459: &Reply($client, "ok\n", $userinput);
5460: } else {
5461: &Failure( $client, "error: ".($!+0)."Unlink tmp Failed ".
5462: "while attempting tmpdel\n", $userinput);
5463: }
5464:
5465: return 1;
5466:
5467: }
5468: ®ister_handler("tmpdel", \&tmp_del_handler, 0, 1, 0);
5469:
5470: #
5471: # Processes the setannounce command. This command
5472: # creates a file named announce.txt in the top directory of
5473: # the documentn root and sets its contents. The announce.txt file is
5474: # printed in its entirety at the LonCAPA login page. Note:
5475: # once the announcement.txt fileis created it cannot be deleted.
5476: # However, setting the contents of the file to empty removes the
5477: # announcement from the login page of loncapa so who cares.
5478: #
5479: # Parameters:
5480: # $cmd - The command that got us dispatched.
5481: # $announcement - The text of the announcement.
5482: # $client - Socket open on the client process.
5483: # Retunrns:
5484: # 1 - Indicating request processing should continue
5485: # Side Effects:
5486: # The file {DocRoot}/announcement.txt is created.
5487: # A reply is sent to $client.
5488: #
5489: sub set_announce_handler {
5490: my ($cmd, $announcement, $client) = @_;
5491:
5492: my $userinput = "$cmd:$announcement";
5493:
5494: chomp($announcement);
5495: $announcement=&unescape($announcement);
5496: if (my $store=IO::File->new('>'.$perlvar{'lonDocRoot'}.
5497: '/announcement.txt')) {
5498: print $store $announcement;
5499: close $store;
5500: &Reply($client, "ok\n", $userinput);
5501: } else {
5502: &Failure($client, "error: ".($!+0)."\n", $userinput);
5503: }
5504:
5505: return 1;
5506: }
5507: ®ister_handler("setannounce", \&set_announce_handler, 0, 1, 0);
5508:
5509: #
5510: # Return the version of the daemon. This can be used to determine
5511: # the compatibility of cross version installations or, alternatively to
5512: # simply know who's out of date and who isn't. Note that the version
5513: # is returned concatenated with the tail.
5514: # Parameters:
5515: # $cmd - the request that dispatched to us.
5516: # $tail - Tail of the request (client's version?).
5517: # $client - Socket open on the client.
5518: #Returns:
5519: # 1 - continue processing requests.
5520: # Side Effects:
5521: # Replies with version to $client.
5522: sub get_version_handler {
5523: my ($cmd, $tail, $client) = @_;
5524:
5525: my $userinput = $cmd.$tail;
5526:
5527: &Reply($client, &version($userinput)."\n", $userinput);
5528:
5529:
5530: return 1;
5531: }
5532: ®ister_handler("version", \&get_version_handler, 0, 1, 0);
5533:
5534: # Set the current host and domain. This is used to support
5535: # multihomed systems. Each IP of the system, or even separate daemons
5536: # on the same IP can be treated as handling a separate lonCAPA virtual
5537: # machine. This command selects the virtual lonCAPA. The client always
5538: # knows the right one since it is lonc and it is selecting the domain/system
5539: # from the hosts.tab file.
5540: # Parameters:
5541: # $cmd - Command that dispatched us.
5542: # $tail - Tail of the command (domain/host requested).
5543: # $socket - Socket open on the client.
5544: #
5545: # Returns:
5546: # 1 - Indicates the program should continue to process requests.
5547: # Side-effects:
5548: # The default domain/system context is modified for this daemon.
5549: # a reply is sent to the client.
5550: #
5551: sub set_virtual_host_handler {
5552: my ($cmd, $tail, $socket) = @_;
5553:
5554: my $userinput ="$cmd:$tail";
5555:
5556: &Reply($client, &sethost($userinput)."\n", $userinput);
5557:
5558:
5559: return 1;
5560: }
5561: ®ister_handler("sethost", \&set_virtual_host_handler, 0, 1, 0);
5562:
5563: # Process a request to exit:
5564: # - "bye" is sent to the client.
5565: # - The client socket is shutdown and closed.
5566: # - We indicate to the caller that we should exit.
5567: # Formal Parameters:
5568: # $cmd - The command that got us here.
5569: # $tail - Tail of the command (empty).
5570: # $client - Socket open on the tail.
5571: # Returns:
5572: # 0 - Indicating the program should exit!!
5573: #
5574: sub exit_handler {
5575: my ($cmd, $tail, $client) = @_;
5576:
5577: my $userinput = "$cmd:$tail";
5578:
5579: &logthis("Client $clientip ($clientname) hanging up: $userinput");
5580: &Reply($client, "bye\n", $userinput);
5581: $client->shutdown(2); # shutdown the socket forcibly.
5582: $client->close();
5583:
5584: return 0;
5585: }
5586: ®ister_handler("exit", \&exit_handler, 0,1,1);
5587: ®ister_handler("init", \&exit_handler, 0,1,1);
5588: ®ister_handler("quit", \&exit_handler, 0,1,1);
5589:
5590: # Determine if auto-enrollment is enabled.
5591: # Note that the original had what I believe to be a defect.
5592: # The original returned 0 if the requestor was not a registerd client.
5593: # It should return "refused".
5594: # Formal Parameters:
5595: # $cmd - The command that invoked us.
5596: # $tail - The tail of the command (Extra command parameters.
5597: # $client - The socket open on the client that issued the request.
5598: # Returns:
5599: # 1 - Indicating processing should continue.
5600: #
5601: sub enrollment_enabled_handler {
5602: my ($cmd, $tail, $client) = @_;
5603: my $userinput = $cmd.":".$tail; # For logging purposes.
5604:
5605:
5606: my ($cdom) = split(/:/, $tail, 2); # Domain we're asking about.
5607:
5608: my $outcome = &localenroll::run($cdom);
5609: &Reply($client, \$outcome, $userinput);
5610:
5611: return 1;
5612: }
5613: ®ister_handler("autorun", \&enrollment_enabled_handler, 0, 1, 0);
5614:
5615: #
5616: # Validate an institutional code used for a LON-CAPA course.
5617: #
5618: # Formal Parameters:
5619: # $cmd - The command request that got us dispatched.
5620: # $tail - The tail of the command. In this case,
5621: # this is a colon separated set of words that will be split
5622: # into:
5623: # $dom - The domain for which the check of
5624: # institutional course code will occur.
5625: #
5626: # $instcode - The institutional code for the course
5627: # being requested, or validated for rights
5628: # to request.
5629: #
5630: # $owner - The course requestor (who will be the
5631: # course owner, in the form username:domain
5632: #
5633: # $client - Socket open on the client.
5634: # Returns:
5635: # 1 - Indicating processing should continue.
5636: #
5637: sub validate_instcode_handler {
5638: my ($cmd, $tail, $client) = @_;
5639: my $userinput = "$cmd:$tail";
5640: my ($dom,$instcode,$owner) = split(/:/, $tail);
5641: $instcode = &unescape($instcode);
5642: $owner = &unescape($owner);
5643: my ($outcome,$description,$credits) =
5644: &localenroll::validate_instcode($dom,$instcode,$owner);
5645: my $result = &escape($outcome).'&'.&escape($description).'&'.
5646: &escape($credits);
5647: &Reply($client, \$result, $userinput);
5648:
5649: return 1;
5650: }
5651: ®ister_handler("autovalidateinstcode", \&validate_instcode_handler, 0, 1, 0);
5652:
5653: # Get the official sections for which auto-enrollment is possible.
5654: # Since the admin people won't know about 'unofficial sections'
5655: # we cannot auto-enroll on them.
5656: # Formal Parameters:
5657: # $cmd - The command request that got us dispatched here.
5658: # $tail - The remainder of the request. In our case this
5659: # will be split into:
5660: # $coursecode - The course name from the admin point of view.
5661: # $cdom - The course's domain(?).
5662: # $client - Socket open on the client.
5663: # Returns:
5664: # 1 - Indiciting processing should continue.
5665: #
5666: sub get_sections_handler {
5667: my ($cmd, $tail, $client) = @_;
5668: my $userinput = "$cmd:$tail";
5669:
5670: my ($coursecode, $cdom) = split(/:/, $tail);
5671: my @secs = &localenroll::get_sections($coursecode,$cdom);
5672: my $seclist = &escape(join(':',@secs));
5673:
5674: &Reply($client, \$seclist, $userinput);
5675:
5676:
5677: return 1;
5678: }
5679: ®ister_handler("autogetsections", \&get_sections_handler, 0, 1, 0);
5680:
5681: # Validate the owner of a new course section.
5682: #
5683: # Formal Parameters:
5684: # $cmd - Command that got us dispatched.
5685: # $tail - the remainder of the command. For us this consists of a
5686: # colon separated string containing:
5687: # $inst - Course Id from the institutions point of view.
5688: # $owner - Proposed owner of the course.
5689: # $cdom - Domain of the course (from the institutions
5690: # point of view?)..
5691: # $client - Socket open on the client.
5692: #
5693: # Returns:
5694: # 1 - Processing should continue.
5695: #
5696: sub validate_course_owner_handler {
5697: my ($cmd, $tail, $client) = @_;
5698: my $userinput = "$cmd:$tail";
5699: my ($inst_course_id, $owner, $cdom, $coowners) = split(/:/, $tail);
5700:
5701: $owner = &unescape($owner);
5702: $coowners = &unescape($coowners);
5703: my $outcome = &localenroll::new_course($inst_course_id,$owner,$cdom,$coowners);
5704: &Reply($client, \$outcome, $userinput);
5705:
5706:
5707:
5708: return 1;
5709: }
5710: ®ister_handler("autonewcourse", \&validate_course_owner_handler, 0, 1, 0);
5711:
5712: #
5713: # Validate a course section in the official schedule of classes
5714: # from the institutions point of view (part of autoenrollment).
5715: #
5716: # Formal Parameters:
5717: # $cmd - The command request that got us dispatched.
5718: # $tail - The tail of the command. In this case,
5719: # this is a colon separated set of words that will be split
5720: # into:
5721: # $inst_course_id - The course/section id from the
5722: # institutions point of view.
5723: # $cdom - The domain from the institutions
5724: # point of view.
5725: # $client - Socket open on the client.
5726: # Returns:
5727: # 1 - Indicating processing should continue.
5728: #
5729: sub validate_course_section_handler {
5730: my ($cmd, $tail, $client) = @_;
5731: my $userinput = "$cmd:$tail";
5732: my ($inst_course_id, $cdom) = split(/:/, $tail);
5733:
5734: my $outcome=&localenroll::validate_courseID($inst_course_id,$cdom);
5735: &Reply($client, \$outcome, $userinput);
5736:
5737:
5738: return 1;
5739: }
5740: ®ister_handler("autovalidatecourse", \&validate_course_section_handler, 0, 1, 0);
5741:
5742: #
5743: # Validate course owner's access to enrollment data for specific class section.
5744: #
5745: #
5746: # Formal Parameters:
5747: # $cmd - The command request that got us dispatched.
5748: # $tail - The tail of the command. In this case this is a colon separated
5749: # set of values that will be split into:
5750: # $inst_class - Institutional code for the specific class section
5751: # $ownerlist - An escaped comma-separated list of username:domain
5752: # of the course owner, and co-owner(s).
5753: # $cdom - The domain of the course from the institution's
5754: # point of view.
5755: # $client - The socket open on the client.
5756: # Returns:
5757: # 1 - continue processing.
5758: #
5759:
5760: sub validate_class_access_handler {
5761: my ($cmd, $tail, $client) = @_;
5762: my $userinput = "$cmd:$tail";
5763: my ($inst_class,$ownerlist,$cdom) = split(/:/, $tail);
5764: my $owners = &unescape($ownerlist);
5765: my $outcome;
5766: eval {
5767: local($SIG{__DIE__})='DEFAULT';
5768: $outcome=&localenroll::check_section($inst_class,$owners,$cdom);
5769: };
5770: &Reply($client,\$outcome, $userinput);
5771:
5772: return 1;
5773: }
5774: ®ister_handler("autovalidateclass_sec", \&validate_class_access_handler, 0, 1, 0);
5775:
5776: #
5777: # Validate course owner or co-owners(s) access to enrollment data for all sections
5778: # and crosslistings for a particular course.
5779: #
5780: #
5781: # Formal Parameters:
5782: # $cmd - The command request that got us dispatched.
5783: # $tail - The tail of the command. In this case this is a colon separated
5784: # set of values that will be split into:
5785: # $ownerlist - An escaped comma-separated list of username:domain
5786: # of the course owner, and co-owner(s).
5787: # $cdom - The domain of the course from the institution's
5788: # point of view.
5789: # $classes - Frozen hash of institutional course sections and
5790: # crosslistings.
5791: # $client - The socket open on the client.
5792: # Returns:
5793: # 1 - continue processing.
5794: #
5795:
5796: sub validate_classes_handler {
5797: my ($cmd, $tail, $client) = @_;
5798: my $userinput = "$cmd:$tail";
5799: my ($ownerlist,$cdom,$classes) = split(/:/, $tail);
5800: my $classesref = &Apache::lonnet::thaw_unescape($classes);
5801: my $owners = &unescape($ownerlist);
5802: my $result;
5803: eval {
5804: local($SIG{__DIE__})='DEFAULT';
5805: my %validations;
5806: my $response = &localenroll::check_instclasses($owners,$cdom,$classesref,
5807: \%validations);
5808: if ($response eq 'ok') {
5809: foreach my $key (keys(%validations)) {
5810: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($validations{$key}).'&';
5811: }
5812: $result =~ s/\&$//;
5813: } else {
5814: $result = 'error';
5815: }
5816: };
5817: if (!$@) {
5818: &Reply($client, \$result, $userinput);
5819: } else {
5820: &Failure($client,"unknown_cmd\n",$userinput);
5821: }
5822: return 1;
5823: }
5824: ®ister_handler("autovalidateinstclasses", \&validate_classes_handler, 0, 1, 0);
5825:
5826: #
5827: # Create a password for a new LON-CAPA user added by auto-enrollment.
5828: # Only used for case where authentication method for new user is localauth
5829: #
5830: # Formal Parameters:
5831: # $cmd - The command request that got us dispatched.
5832: # $tail - The tail of the command. In this case this is a colon separated
5833: # set of words that will be split into:
5834: # $authparam - An authentication parameter (localauth parameter).
5835: # $cdom - The domain of the course from the institution's
5836: # point of view.
5837: # $client - The socket open on the client.
5838: # Returns:
5839: # 1 - continue processing.
5840: #
5841: sub create_auto_enroll_password_handler {
5842: my ($cmd, $tail, $client) = @_;
5843: my $userinput = "$cmd:$tail";
5844:
5845: my ($authparam, $cdom) = split(/:/, $userinput);
5846:
5847: my ($create_passwd,$authchk);
5848: ($authparam,
5849: $create_passwd,
5850: $authchk) = &localenroll::create_password($authparam,$cdom);
5851:
5852: &Reply($client, &escape($authparam.':'.$create_passwd.':'.$authchk)."\n",
5853: $userinput);
5854:
5855:
5856: return 1;
5857: }
5858: ®ister_handler("autocreatepassword", \&create_auto_enroll_password_handler,
5859: 0, 1, 0);
5860:
5861: sub auto_export_grades_handler {
5862: my ($cmd, $tail, $client) = @_;
5863: my $userinput = "$cmd:$tail";
5864: my ($cdom,$cnum,$info,$data) = split(/:/,$tail);
5865: my $inforef = &Apache::lonnet::thaw_unescape($info);
5866: my $dataref = &Apache::lonnet::thaw_unescape($data);
5867: my ($outcome,$result);;
5868: eval {
5869: local($SIG{__DIE__})='DEFAULT';
5870: my %rtnhash;
5871: $outcome=&localenroll::export_grades($cdom,$cnum,$inforef,$dataref,\%rtnhash);
5872: if ($outcome eq 'ok') {
5873: foreach my $key (keys(%rtnhash)) {
5874: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($rtnhash{$key}).'&';
5875: }
5876: $result =~ s/\&$//;
5877: }
5878: };
5879: if (!$@) {
5880: if ($outcome eq 'ok') {
5881: if ($cipher) {
5882: my $cmdlength=length($result);
5883: $result.=" ";
5884: my $encresult='';
5885: for (my $encidx=0;$encidx<=$cmdlength;$encidx+=8) {
5886: $encresult.= unpack("H16",
5887: $cipher->encrypt(substr($result,
5888: $encidx,
5889: 8)));
5890: }
5891: &Reply( $client, "enc:$cmdlength:$encresult\n", $userinput);
5892: } else {
5893: &Failure( $client, "error:no_key\n", $userinput);
5894: }
5895: } else {
5896: &Reply($client, "$outcome\n", $userinput);
5897: }
5898: } else {
5899: &Failure($client,"export_error\n",$userinput);
5900: }
5901: return 1;
5902: }
5903: ®ister_handler("autoexportgrades", \&auto_export_grades_handler,
5904: 1, 1, 0);
5905:
5906: # Retrieve and remove temporary files created by/during autoenrollment.
5907: #
5908: # Formal Parameters:
5909: # $cmd - The command that got us dispatched.
5910: # $tail - The tail of the command. In our case this is a colon
5911: # separated list that will be split into:
5912: # $filename - The name of the file to retrieve.
5913: # The filename is given as a path relative to
5914: # the LonCAPA temp file directory.
5915: # $client - Socket open on the client.
5916: #
5917: # Returns:
5918: # 1 - Continue processing.
5919: sub retrieve_auto_file_handler {
5920: my ($cmd, $tail, $client) = @_;
5921: my $userinput = "cmd:$tail";
5922:
5923: my ($filename) = split(/:/, $tail);
5924:
5925: my $source = $perlvar{'lonDaemons'}.'/tmp/'.$filename;
5926:
5927: if ($filename =~m{/\.\./}) {
5928: &Failure($client, "refused\n", $userinput);
5929: } elsif ($filename !~ /^$LONCAPA::match_domain\_$LONCAPA::match_courseid\_.+_classlist\.xml$/) {
5930: &Failure($client, "refused\n", $userinput);
5931: } elsif ( (-e $source) && ($filename ne '') ) {
5932: my $reply = '';
5933: if (open(my $fh,$source)) {
5934: while (<$fh>) {
5935: chomp($_);
5936: $_ =~ s/^\s+//g;
5937: $_ =~ s/\s+$//g;
5938: $reply .= $_;
5939: }
5940: close($fh);
5941: &Reply($client, &escape($reply)."\n", $userinput);
5942:
5943: # Does this have to be uncommented??!? (RF).
5944: #
5945: # unlink($source);
5946: } else {
5947: &Failure($client, "error\n", $userinput);
5948: }
5949: } else {
5950: &Failure($client, "error\n", $userinput);
5951: }
5952:
5953:
5954: return 1;
5955: }
5956: ®ister_handler("autoretrieve", \&retrieve_auto_file_handler, 0,1,0);
5957:
5958: sub crsreq_checks_handler {
5959: my ($cmd, $tail, $client) = @_;
5960: my $userinput = "$cmd:$tail";
5961: my $dom = $tail;
5962: my $result;
5963: my @reqtypes = ('official','unofficial','community','textbook','placement');
5964: eval {
5965: local($SIG{__DIE__})='DEFAULT';
5966: my %validations;
5967: my $response = &localenroll::crsreq_checks($dom,\@reqtypes,
5968: \%validations);
5969: if ($response eq 'ok') {
5970: foreach my $key (keys(%validations)) {
5971: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($validations{$key}).'&';
5972: }
5973: $result =~ s/\&$//;
5974: } else {
5975: $result = 'error';
5976: }
5977: };
5978: if (!$@) {
5979: &Reply($client, \$result, $userinput);
5980: } else {
5981: &Failure($client,"unknown_cmd\n",$userinput);
5982: }
5983: return 1;
5984: }
5985: ®ister_handler("autocrsreqchecks", \&crsreq_checks_handler, 0, 1, 0);
5986:
5987: sub validate_crsreq_handler {
5988: my ($cmd, $tail, $client) = @_;
5989: my $userinput = "$cmd:$tail";
5990: my ($dom,$owner,$crstype,$inststatuslist,$instcode,$instseclist,$customdata) = split(/:/, $tail);
5991: $instcode = &unescape($instcode);
5992: $owner = &unescape($owner);
5993: $crstype = &unescape($crstype);
5994: $inststatuslist = &unescape($inststatuslist);
5995: $instcode = &unescape($instcode);
5996: $instseclist = &unescape($instseclist);
5997: my $custominfo = &Apache::lonnet::thaw_unescape($customdata);
5998: my $outcome;
5999: eval {
6000: local($SIG{__DIE__})='DEFAULT';
6001: $outcome = &localenroll::validate_crsreq($dom,$owner,$crstype,
6002: $inststatuslist,$instcode,
6003: $instseclist,$custominfo);
6004: };
6005: if (!$@) {
6006: &Reply($client, \$outcome, $userinput);
6007: } else {
6008: &Failure($client,"unknown_cmd\n",$userinput);
6009: }
6010: return 1;
6011: }
6012: ®ister_handler("autocrsreqvalidation", \&validate_crsreq_handler, 0, 1, 0);
6013:
6014: sub crsreq_update_handler {
6015: my ($cmd, $tail, $client) = @_;
6016: my $userinput = "$cmd:$tail";
6017: my ($cdom,$cnum,$crstype,$action,$ownername,$ownerdomain,$fullname,$title,$code,
6018: $accessstart,$accessend,$infohashref) =
6019: split(/:/, $tail);
6020: $crstype = &unescape($crstype);
6021: $action = &unescape($action);
6022: $ownername = &unescape($ownername);
6023: $ownerdomain = &unescape($ownerdomain);
6024: $fullname = &unescape($fullname);
6025: $title = &unescape($title);
6026: $code = &unescape($code);
6027: $accessstart = &unescape($accessstart);
6028: $accessend = &unescape($accessend);
6029: my $incoming = &Apache::lonnet::thaw_unescape($infohashref);
6030: my ($result,$outcome);
6031: eval {
6032: local($SIG{__DIE__})='DEFAULT';
6033: my %rtnhash;
6034: $outcome = &localenroll::crsreq_updates($cdom,$cnum,$crstype,$action,
6035: $ownername,$ownerdomain,$fullname,
6036: $title,$code,$accessstart,$accessend,
6037: $incoming,\%rtnhash);
6038: if ($outcome eq 'ok') {
6039: my @posskeys = qw(createdweb createdmsg createdcustomized createdactions queuedweb queuedmsg formitems reviewweb validationjs onload javascript);
6040: foreach my $key (keys(%rtnhash)) {
6041: if (grep(/^\Q$key\E/,@posskeys)) {
6042: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($rtnhash{$key}).'&';
6043: }
6044: }
6045: $result =~ s/\&$//;
6046: }
6047: };
6048: if (!$@) {
6049: if ($outcome eq 'ok') {
6050: &Reply($client, \$result, $userinput);
6051: } else {
6052: &Reply($client, "format_error\n", $userinput);
6053: }
6054: } else {
6055: &Failure($client,"unknown_cmd\n",$userinput);
6056: }
6057: return 1;
6058: }
6059: ®ister_handler("autocrsrequpdate", \&crsreq_update_handler, 0, 1, 0);
6060:
6061: #
6062: # Read and retrieve institutional code format (for support form).
6063: # Formal Parameters:
6064: # $cmd - Command that dispatched us.
6065: # $tail - Tail of the command. In this case it conatins
6066: # the course domain and the coursename.
6067: # $client - Socket open on the client.
6068: # Returns:
6069: # 1 - Continue processing.
6070: #
6071: sub get_institutional_code_format_handler {
6072: my ($cmd, $tail, $client) = @_;
6073: my $userinput = "$cmd:$tail";
6074:
6075: my $reply;
6076: my($cdom,$course) = split(/:/,$tail);
6077: my @pairs = split/\&/,$course;
6078: my %instcodes = ();
6079: my %codes = ();
6080: my @codetitles = ();
6081: my %cat_titles = ();
6082: my %cat_order = ();
6083: foreach (@pairs) {
6084: my ($key,$value) = split/=/,$_;
6085: $instcodes{&unescape($key)} = &unescape($value);
6086: }
6087: my $formatreply = &localenroll::instcode_format($cdom,
6088: \%instcodes,
6089: \%codes,
6090: \@codetitles,
6091: \%cat_titles,
6092: \%cat_order);
6093: if ($formatreply eq 'ok') {
6094: my $codes_str = &Apache::lonnet::hash2str(%codes);
6095: my $codetitles_str = &Apache::lonnet::array2str(@codetitles);
6096: my $cat_titles_str = &Apache::lonnet::hash2str(%cat_titles);
6097: my $cat_order_str = &Apache::lonnet::hash2str(%cat_order);
6098: &Reply($client,
6099: $codes_str.':'.$codetitles_str.':'.$cat_titles_str.':'
6100: .$cat_order_str."\n",
6101: $userinput);
6102: } else {
6103: # this else branch added by RF since if not ok, lonc will
6104: # hang waiting on reply until timeout.
6105: #
6106: &Reply($client, "format_error\n", $userinput);
6107: }
6108:
6109: return 1;
6110: }
6111: ®ister_handler("autoinstcodeformat",
6112: \&get_institutional_code_format_handler,0,1,0);
6113:
6114: sub get_institutional_defaults_handler {
6115: my ($cmd, $tail, $client) = @_;
6116: my $userinput = "$cmd:$tail";
6117:
6118: my $dom = $tail;
6119: my %defaults_hash;
6120: my @code_order;
6121: my $outcome;
6122: eval {
6123: local($SIG{__DIE__})='DEFAULT';
6124: $outcome = &localenroll::instcode_defaults($dom,\%defaults_hash,
6125: \@code_order);
6126: };
6127: if (!$@) {
6128: if ($outcome eq 'ok') {
6129: my $result='';
6130: while (my ($key,$value) = each(%defaults_hash)) {
6131: $result.=&escape($key).'='.&escape($value).'&';
6132: }
6133: $result .= 'code_order='.&escape(join('&',@code_order));
6134: &Reply($client,\$result,$userinput);
6135: } else {
6136: &Reply($client,"error\n", $userinput);
6137: }
6138: } else {
6139: &Failure($client,"unknown_cmd\n",$userinput);
6140: }
6141: }
6142: ®ister_handler("autoinstcodedefaults",
6143: \&get_institutional_defaults_handler,0,1,0);
6144:
6145: sub get_possible_instcodes_handler {
6146: my ($cmd, $tail, $client) = @_;
6147: my $userinput = "$cmd:$tail";
6148:
6149: my $reply;
6150: my $cdom = $tail;
6151: my (@codetitles,%cat_titles,%cat_order,@code_order);
6152: my $formatreply = &localenroll::possible_instcodes($cdom,
6153: \@codetitles,
6154: \%cat_titles,
6155: \%cat_order,
6156: \@code_order);
6157: if ($formatreply eq 'ok') {
6158: my $result = join('&',map {&escape($_);} (@codetitles)).':';
6159: $result .= join('&',map {&escape($_);} (@code_order)).':';
6160: foreach my $key (keys(%cat_titles)) {
6161: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($cat_titles{$key}).'&';
6162: }
6163: $result =~ s/\&$//;
6164: $result .= ':';
6165: foreach my $key (keys(%cat_order)) {
6166: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($cat_order{$key}).'&';
6167: }
6168: $result =~ s/\&$//;
6169: &Reply($client,\$result,$userinput);
6170: } else {
6171: &Reply($client, "format_error\n", $userinput);
6172: }
6173: return 1;
6174: }
6175: ®ister_handler("autopossibleinstcodes",
6176: \&get_possible_instcodes_handler,0,1,0);
6177:
6178: sub get_institutional_user_rules {
6179: my ($cmd, $tail, $client) = @_;
6180: my $userinput = "$cmd:$tail";
6181: my $dom = &unescape($tail);
6182: my (%rules_hash,@rules_order);
6183: my $outcome;
6184: eval {
6185: local($SIG{__DIE__})='DEFAULT';
6186: $outcome = &localenroll::username_rules($dom,\%rules_hash,\@rules_order);
6187: };
6188: if (!$@) {
6189: if ($outcome eq 'ok') {
6190: my $result;
6191: foreach my $key (keys(%rules_hash)) {
6192: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($rules_hash{$key}).'&';
6193: }
6194: $result =~ s/\&$//;
6195: $result .= ':';
6196: if (@rules_order > 0) {
6197: foreach my $item (@rules_order) {
6198: $result .= &escape($item).'&';
6199: }
6200: }
6201: $result =~ s/\&$//;
6202: &Reply($client,\$result,$userinput);
6203: } else {
6204: &Reply($client,"error\n", $userinput);
6205: }
6206: } else {
6207: &Failure($client,"unknown_cmd\n",$userinput);
6208: }
6209: }
6210: ®ister_handler("instuserrules",\&get_institutional_user_rules,0,1,0);
6211:
6212: sub get_institutional_id_rules {
6213: my ($cmd, $tail, $client) = @_;
6214: my $userinput = "$cmd:$tail";
6215: my $dom = &unescape($tail);
6216: my (%rules_hash,@rules_order);
6217: my $outcome;
6218: eval {
6219: local($SIG{__DIE__})='DEFAULT';
6220: $outcome = &localenroll::id_rules($dom,\%rules_hash,\@rules_order);
6221: };
6222: if (!$@) {
6223: if ($outcome eq 'ok') {
6224: my $result;
6225: foreach my $key (keys(%rules_hash)) {
6226: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($rules_hash{$key}).'&';
6227: }
6228: $result =~ s/\&$//;
6229: $result .= ':';
6230: if (@rules_order > 0) {
6231: foreach my $item (@rules_order) {
6232: $result .= &escape($item).'&';
6233: }
6234: }
6235: $result =~ s/\&$//;
6236: &Reply($client,\$result,$userinput);
6237: } else {
6238: &Reply($client,"error\n", $userinput);
6239: }
6240: } else {
6241: &Failure($client,"unknown_cmd\n",$userinput);
6242: }
6243: }
6244: ®ister_handler("instidrules",\&get_institutional_id_rules,0,1,0);
6245:
6246: sub get_institutional_selfcreate_rules {
6247: my ($cmd, $tail, $client) = @_;
6248: my $userinput = "$cmd:$tail";
6249: my $dom = &unescape($tail);
6250: my (%rules_hash,@rules_order);
6251: my $outcome;
6252: eval {
6253: local($SIG{__DIE__})='DEFAULT';
6254: $outcome = &localenroll::selfcreate_rules($dom,\%rules_hash,\@rules_order);
6255: };
6256: if (!$@) {
6257: if ($outcome eq 'ok') {
6258: my $result;
6259: foreach my $key (keys(%rules_hash)) {
6260: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($rules_hash{$key}).'&';
6261: }
6262: $result =~ s/\&$//;
6263: $result .= ':';
6264: if (@rules_order > 0) {
6265: foreach my $item (@rules_order) {
6266: $result .= &escape($item).'&';
6267: }
6268: }
6269: $result =~ s/\&$//;
6270: &Reply($client,\$result,$userinput);
6271: } else {
6272: &Reply($client,"error\n", $userinput);
6273: }
6274: } else {
6275: &Failure($client,"unknown_cmd\n",$userinput);
6276: }
6277: }
6278: ®ister_handler("instemailrules",\&get_institutional_selfcreate_rules,0,1,0);
6279:
6280:
6281: sub institutional_username_check {
6282: my ($cmd, $tail, $client) = @_;
6283: my $userinput = "$cmd:$tail";
6284: my %rulecheck;
6285: my $outcome;
6286: my ($udom,$uname,@rules) = split(/:/,$tail);
6287: $udom = &unescape($udom);
6288: $uname = &unescape($uname);
6289: @rules = map {&unescape($_);} (@rules);
6290: eval {
6291: local($SIG{__DIE__})='DEFAULT';
6292: $outcome = &localenroll::username_check($udom,$uname,\@rules,\%rulecheck);
6293: };
6294: if (!$@) {
6295: if ($outcome eq 'ok') {
6296: my $result='';
6297: foreach my $key (keys(%rulecheck)) {
6298: $result.=&escape($key).'='.&Apache::lonnet::freeze_escape($rulecheck{$key}).'&';
6299: }
6300: &Reply($client,\$result,$userinput);
6301: } else {
6302: &Reply($client,"error\n", $userinput);
6303: }
6304: } else {
6305: &Failure($client,"unknown_cmd\n",$userinput);
6306: }
6307: }
6308: ®ister_handler("instrulecheck",\&institutional_username_check,0,1,0);
6309:
6310: sub institutional_id_check {
6311: my ($cmd, $tail, $client) = @_;
6312: my $userinput = "$cmd:$tail";
6313: my %rulecheck;
6314: my $outcome;
6315: my ($udom,$id,@rules) = split(/:/,$tail);
6316: $udom = &unescape($udom);
6317: $id = &unescape($id);
6318: @rules = map {&unescape($_);} (@rules);
6319: eval {
6320: local($SIG{__DIE__})='DEFAULT';
6321: $outcome = &localenroll::id_check($udom,$id,\@rules,\%rulecheck);
6322: };
6323: if (!$@) {
6324: if ($outcome eq 'ok') {
6325: my $result='';
6326: foreach my $key (keys(%rulecheck)) {
6327: $result.=&escape($key).'='.&Apache::lonnet::freeze_escape($rulecheck{$key}).'&';
6328: }
6329: &Reply($client,\$result,$userinput);
6330: } else {
6331: &Reply($client,"error\n", $userinput);
6332: }
6333: } else {
6334: &Failure($client,"unknown_cmd\n",$userinput);
6335: }
6336: }
6337: ®ister_handler("instidrulecheck",\&institutional_id_check,0,1,0);
6338:
6339: sub institutional_selfcreate_check {
6340: my ($cmd, $tail, $client) = @_;
6341: my $userinput = "$cmd:$tail";
6342: my %rulecheck;
6343: my $outcome;
6344: my ($udom,$email,@rules) = split(/:/,$tail);
6345: $udom = &unescape($udom);
6346: $email = &unescape($email);
6347: @rules = map {&unescape($_);} (@rules);
6348: eval {
6349: local($SIG{__DIE__})='DEFAULT';
6350: $outcome = &localenroll::selfcreate_check($udom,$email,\@rules,\%rulecheck);
6351: };
6352: if (!$@) {
6353: if ($outcome eq 'ok') {
6354: my $result='';
6355: foreach my $key (keys(%rulecheck)) {
6356: $result.=&escape($key).'='.&Apache::lonnet::freeze_escape($rulecheck{$key}).'&';
6357: }
6358: &Reply($client,\$result,$userinput);
6359: } else {
6360: &Reply($client,"error\n", $userinput);
6361: }
6362: } else {
6363: &Failure($client,"unknown_cmd\n",$userinput);
6364: }
6365: }
6366: ®ister_handler("instselfcreatecheck",\&institutional_selfcreate_check,0,1,0);
6367:
6368: # Get domain specific conditions for import of student photographs to a course
6369: #
6370: # Retrieves information from photo_permission subroutine in localenroll.
6371: # Returns outcome (ok) if no processing errors, and whether course owner is
6372: # required to accept conditions of use (yes/no).
6373: #
6374: #
6375: sub photo_permission_handler {
6376: my ($cmd, $tail, $client) = @_;
6377: my $userinput = "$cmd:$tail";
6378: my $cdom = $tail;
6379: my ($perm_reqd,$conditions);
6380: my $outcome;
6381: eval {
6382: local($SIG{__DIE__})='DEFAULT';
6383: $outcome = &localenroll::photo_permission($cdom,\$perm_reqd,
6384: \$conditions);
6385: };
6386: if (!$@) {
6387: &Reply($client, &escape($outcome.':'.$perm_reqd.':'. $conditions)."\n",
6388: $userinput);
6389: } else {
6390: &Failure($client,"unknown_cmd\n",$userinput);
6391: }
6392: return 1;
6393: }
6394: ®ister_handler("autophotopermission",\&photo_permission_handler,0,1,0);
6395:
6396: #
6397: # Checks if student photo is available for a user in the domain, in the user's
6398: # directory (in /userfiles/internal/studentphoto.jpg).
6399: # Uses localstudentphoto:fetch() to ensure there is an up to date copy of
6400: # the student's photo.
6401:
6402: sub photo_check_handler {
6403: my ($cmd, $tail, $client) = @_;
6404: my $userinput = "$cmd:$tail";
6405: my ($udom,$uname,$pid) = split(/:/,$tail);
6406: $udom = &unescape($udom);
6407: $uname = &unescape($uname);
6408: $pid = &unescape($pid);
6409: my $path=&propath($udom,$uname).'/userfiles/internal/';
6410: if (!-e $path) {
6411: &mkpath($path);
6412: }
6413: my $response;
6414: my $result = &localstudentphoto::fetch($udom,$uname,$pid,\$response);
6415: $result .= ':'.$response;
6416: &Reply($client, &escape($result)."\n",$userinput);
6417: return 1;
6418: }
6419: ®ister_handler("autophotocheck",\&photo_check_handler,0,1,0);
6420:
6421: #
6422: # Retrieve information from localenroll about whether to provide a button
6423: # for users who have enbled import of student photos to initiate an
6424: # update of photo files for registered students. Also include
6425: # comment to display alongside button.
6426:
6427: sub photo_choice_handler {
6428: my ($cmd, $tail, $client) = @_;
6429: my $userinput = "$cmd:$tail";
6430: my $cdom = &unescape($tail);
6431: my ($update,$comment);
6432: eval {
6433: local($SIG{__DIE__})='DEFAULT';
6434: ($update,$comment) = &localenroll::manager_photo_update($cdom);
6435: };
6436: if (!$@) {
6437: &Reply($client,&escape($update).':'.&escape($comment)."\n",$userinput);
6438: } else {
6439: &Failure($client,"unknown_cmd\n",$userinput);
6440: }
6441: return 1;
6442: }
6443: ®ister_handler("autophotochoice",\&photo_choice_handler,0,1,0);
6444:
6445: #
6446: # Gets a student's photo to exist (in the correct image type) in the user's
6447: # directory.
6448: # Formal Parameters:
6449: # $cmd - The command request that got us dispatched.
6450: # $tail - A colon separated set of words that will be split into:
6451: # $domain - student's domain
6452: # $uname - student username
6453: # $type - image type desired
6454: # $client - The socket open on the client.
6455: # Returns:
6456: # 1 - continue processing.
6457:
6458: sub student_photo_handler {
6459: my ($cmd, $tail, $client) = @_;
6460: my ($domain,$uname,$ext,$type) = split(/:/, $tail);
6461:
6462: my $path=&propath($domain,$uname). '/userfiles/internal/';
6463: my $filename = 'studentphoto.'.$ext;
6464: if ($type eq 'thumbnail') {
6465: $filename = 'studentphoto_tn.'.$ext;
6466: }
6467: if (-e $path.$filename) {
6468: &Reply($client,"ok\n","$cmd:$tail");
6469: return 1;
6470: }
6471: &mkpath($path);
6472: my $file;
6473: if ($type eq 'thumbnail') {
6474: eval {
6475: local($SIG{__DIE__})='DEFAULT';
6476: $file=&localstudentphoto::fetch_thumbnail($domain,$uname);
6477: };
6478: } else {
6479: $file=&localstudentphoto::fetch($domain,$uname);
6480: }
6481: if (!$file) {
6482: &Failure($client,"unavailable\n","$cmd:$tail");
6483: return 1;
6484: }
6485: if (!-e $path.$filename) { &convert_photo($file,$path.$filename); }
6486: if (-e $path.$filename) {
6487: &Reply($client,"ok\n","$cmd:$tail");
6488: return 1;
6489: }
6490: &Failure($client,"unable_to_convert\n","$cmd:$tail");
6491: return 1;
6492: }
6493: ®ister_handler("studentphoto", \&student_photo_handler, 0, 1, 0);
6494:
6495: sub inst_usertypes_handler {
6496: my ($cmd, $domain, $client) = @_;
6497: my $res;
6498: my $userinput = $cmd.":".$domain; # For logging purposes.
6499: my (%typeshash,@order,$result);
6500: eval {
6501: local($SIG{__DIE__})='DEFAULT';
6502: $result=&localenroll::inst_usertypes($domain,\%typeshash,\@order);
6503: };
6504: if ($result eq 'ok') {
6505: if (keys(%typeshash) > 0) {
6506: foreach my $key (keys(%typeshash)) {
6507: $res.=&escape($key).'='.&escape($typeshash{$key}).'&';
6508: }
6509: }
6510: $res=~s/\&$//;
6511: $res .= ':';
6512: if (@order > 0) {
6513: foreach my $item (@order) {
6514: $res .= &escape($item).'&';
6515: }
6516: }
6517: $res=~s/\&$//;
6518: }
6519: &Reply($client, \$res, $userinput);
6520: return 1;
6521: }
6522: ®ister_handler("inst_usertypes", \&inst_usertypes_handler, 0, 1, 0);
6523:
6524: # mkpath makes all directories for a file, expects an absolute path with a
6525: # file or a trailing / if just a dir is passed
6526: # returns 1 on success 0 on failure
6527: sub mkpath {
6528: my ($file)=@_;
6529: my @parts=split(/\//,$file,-1);
6530: my $now=$parts[0].'/'.$parts[1].'/'.$parts[2];
6531: for (my $i=3;$i<= ($#parts-1);$i++) {
6532: $now.='/'.$parts[$i];
6533: if (!-e $now) {
6534: if (!mkdir($now,0770)) { return 0; }
6535: }
6536: }
6537: return 1;
6538: }
6539:
6540: #---------------------------------------------------------------
6541: #
6542: # Getting, decoding and dispatching requests:
6543: #
6544: #
6545: # Get a Request:
6546: # Gets a Request message from the client. The transaction
6547: # is defined as a 'line' of text. We remove the new line
6548: # from the text line.
6549: #
6550: sub get_request {
6551: my $input = <$client>;
6552: chomp($input);
6553:
6554: &Debug("get_request: Request = $input\n");
6555:
6556: &status('Processing '.$clientname.':'.$input);
6557:
6558: return $input;
6559: }
6560: #---------------------------------------------------------------
6561: #
6562: # Process a request. This sub should shrink as each action
6563: # gets farmed out into a separat sub that is registered
6564: # with the dispatch hash.
6565: #
6566: # Parameters:
6567: # user_input - The request received from the client (lonc).
6568: #
6569: # Returns:
6570: # true to keep processing, false if caller should exit.
6571: #
6572: sub process_request {
6573: my ($userinput) = @_; # Easier for now to break style than to
6574: # fix all the userinput -> user_input.
6575: my $wasenc = 0; # True if request was encrypted.
6576: # ------------------------------------------------------------ See if encrypted
6577: # for command
6578: # sethost:<server>
6579: # <command>:<args>
6580: # we just send it to the processor
6581: # for
6582: # sethost:<server>:<command>:<args>
6583: # we do the implict set host and then do the command
6584: if ($userinput =~ /^sethost:/) {
6585: (my $cmd,my $newid,$userinput) = split(':',$userinput,3);
6586: if (defined($userinput)) {
6587: &sethost("$cmd:$newid");
6588: } else {
6589: $userinput = "$cmd:$newid";
6590: }
6591: }
6592:
6593: if ($userinput =~ /^enc/) {
6594: $userinput = decipher($userinput);
6595: $wasenc=1;
6596: if(!$userinput) { # Cipher not defined.
6597: &Failure($client, "error: Encrypted data without negotated key\n");
6598: return 0;
6599: }
6600: }
6601: Debug("process_request: $userinput\n");
6602:
6603: #
6604: # The 'correct way' to add a command to lond is now to
6605: # write a sub to execute it and Add it to the command dispatch
6606: # hash via a call to register_handler.. The comments to that
6607: # sub should give you enough to go on to show how to do this
6608: # along with the examples that are building up as this code
6609: # is getting refactored. Until all branches of the
6610: # if/elseif monster below have been factored out into
6611: # separate procesor subs, if the dispatch hash is missing
6612: # the command keyword, we will fall through to the remainder
6613: # of the if/else chain below in order to keep this thing in
6614: # working order throughout the transmogrification.
6615:
6616: my ($command, $tail) = split(/:/, $userinput, 2);
6617: chomp($command);
6618: chomp($tail);
6619: $tail =~ s/(\r)//; # This helps people debugging with e.g. telnet.
6620: $command =~ s/(\r)//; # And this too for parameterless commands.
6621: if(!$tail) {
6622: $tail =""; # defined but blank.
6623: }
6624:
6625: &Debug("Command received: $command, encoded = $wasenc");
6626:
6627: if(defined $Dispatcher{$command}) {
6628:
6629: my $dispatch_info = $Dispatcher{$command};
6630: my $handler = $$dispatch_info[0];
6631: my $need_encode = $$dispatch_info[1];
6632: my $client_types = $$dispatch_info[2];
6633: Debug("Matched dispatch hash: mustencode: $need_encode "
6634: ."ClientType $client_types");
6635:
6636: # Validate the request:
6637:
6638: my $ok = 1;
6639: my $requesterprivs = 0;
6640: if(&isClient()) {
6641: $requesterprivs |= $CLIENT_OK;
6642: }
6643: if(&isManager()) {
6644: $requesterprivs |= $MANAGER_OK;
6645: }
6646: if($need_encode && (!$wasenc)) {
6647: Debug("Must encode but wasn't: $need_encode $wasenc");
6648: $ok = 0;
6649: }
6650: if(($client_types & $requesterprivs) == 0) {
6651: Debug("Client not privileged to do this operation");
6652: $ok = 0;
6653: }
6654: if ($ok) {
6655: my $realcommand = $command;
6656: if ($command eq 'querysend') {
6657: my ($query,$rest)=split(/\:/,$tail,2);
6658: $query=~s/\n*$//g;
6659: my @possqueries =
6660: qw(userlog courselog fetchenrollment institutionalphotos usersearch instdirsearch getinstuser getmultinstusers);
6661: if (grep(/^\Q$query\E$/,@possqueries)) {
6662: $command .= '_'.$query;
6663: } elsif ($query eq 'prepare activity log') {
6664: $command .= '_activitylog';
6665: }
6666: }
6667: if (ref($trust{$command}) eq 'HASH') {
6668: my $donechecks;
6669: if ($trust{$command}{'anywhere'}) {
6670: $donechecks = 1;
6671: } elsif ($trust{$command}{'manageronly'}) {
6672: unless (&isManager()) {
6673: $ok = 0;
6674: }
6675: $donechecks = 1;
6676: } elsif ($trust{$command}{'institutiononly'}) {
6677: unless ($clientsameinst) {
6678: $ok = 0;
6679: }
6680: $donechecks = 1;
6681: } elsif ($clientsameinst) {
6682: $donechecks = 1;
6683: }
6684: unless ($donechecks) {
6685: foreach my $rule (keys(%{$trust{$command}})) {
6686: next if ($rule eq 'remote');
6687: if ($trust{$command}{$rule}) {
6688: if ($clientprohibited{$rule}) {
6689: $ok = 0;
6690: } else {
6691: $ok = 1;
6692: $donechecks = 1;
6693: last;
6694: }
6695: }
6696: }
6697: }
6698: unless ($donechecks) {
6699: if ($trust{$command}{'remote'}) {
6700: if ($clientremoteok) {
6701: $ok = 1;
6702: } else {
6703: $ok = 0;
6704: }
6705: }
6706: }
6707: }
6708: $command = $realcommand;
6709: }
6710:
6711: if($ok) {
6712: Debug("Dispatching to handler $command $tail");
6713: my $keep_going = &$handler($command, $tail, $client);
6714: return $keep_going;
6715: } else {
6716: Debug("Refusing to dispatch because client did not match requirements");
6717: Failure($client, "refused\n", $userinput);
6718: return 1;
6719: }
6720: }
6721:
6722: print $client "unknown_cmd\n";
6723: # -------------------------------------------------------------------- complete
6724: Debug("process_request - returning 1");
6725: return 1;
6726: }
6727: #
6728: # Decipher encoded traffic
6729: # Parameters:
6730: # input - Encoded data.
6731: # Returns:
6732: # Decoded data or undef if encryption key was not yet negotiated.
6733: # Implicit input:
6734: # cipher - This global holds the negotiated encryption key.
6735: #
6736: sub decipher {
6737: my ($input) = @_;
6738: my $output = '';
6739:
6740:
6741: if($cipher) {
6742: my($enc, $enclength, $encinput) = split(/:/, $input);
6743: for(my $encidx = 0; $encidx < length($encinput); $encidx += 16) {
6744: $output .=
6745: $cipher->decrypt(pack("H16", substr($encinput, $encidx, 16)));
6746: }
6747: return substr($output, 0, $enclength);
6748: } else {
6749: return undef;
6750: }
6751: }
6752:
6753: #
6754: # Register a command processor. This function is invoked to register a sub
6755: # to process a request. Once registered, the ProcessRequest sub can automatically
6756: # dispatch requests to an appropriate sub, and do the top level validity checking
6757: # as well:
6758: # - Is the keyword recognized.
6759: # - Is the proper client type attempting the request.
6760: # - Is the request encrypted if it has to be.
6761: # Parameters:
6762: # $request_name - Name of the request being registered.
6763: # This is the command request that will match
6764: # against the hash keywords to lookup the information
6765: # associated with the dispatch information.
6766: # $procedure - Reference to a sub to call to process the request.
6767: # All subs get called as follows:
6768: # Procedure($cmd, $tail, $replyfd, $key)
6769: # $cmd - the actual keyword that invoked us.
6770: # $tail - the tail of the request that invoked us.
6771: # $replyfd- File descriptor connected to the client
6772: # $must_encode - True if the request must be encoded to be good.
6773: # $client_ok - True if it's ok for a client to request this.
6774: # $manager_ok - True if it's ok for a manager to request this.
6775: # Side effects:
6776: # - On success, the Dispatcher hash has an entry added for the key $RequestName
6777: # - On failure, the program will die as it's a bad internal bug to try to
6778: # register a duplicate command handler.
6779: #
6780: sub register_handler {
6781: my ($request_name,$procedure,$must_encode, $client_ok,$manager_ok) = @_;
6782:
6783: # Don't allow duplication#
6784:
6785: if (defined $Dispatcher{$request_name}) {
6786: die "Attempting to define a duplicate request handler for $request_name\n";
6787: }
6788: # Build the client type mask:
6789:
6790: my $client_type_mask = 0;
6791: if($client_ok) {
6792: $client_type_mask |= $CLIENT_OK;
6793: }
6794: if($manager_ok) {
6795: $client_type_mask |= $MANAGER_OK;
6796: }
6797:
6798: # Enter the hash:
6799:
6800: my @entry = ($procedure, $must_encode, $client_type_mask);
6801:
6802: $Dispatcher{$request_name} = \@entry;
6803:
6804: }
6805:
6806:
6807: #------------------------------------------------------------------
6808:
6809:
6810:
6811:
6812: #
6813: # Convert an error return code from lcpasswd to a string value.
6814: #
6815: sub lcpasswdstrerror {
6816: my $ErrorCode = shift;
6817: if(($ErrorCode < 0) || ($ErrorCode > $lastpwderror)) {
6818: return "lcpasswd Unrecognized error return value ".$ErrorCode;
6819: } else {
6820: return $passwderrors[$ErrorCode];
6821: }
6822: }
6823:
6824: # grabs exception and records it to log before exiting
6825: sub catchexception {
6826: my ($error)=@_;
6827: $SIG{'QUIT'}='DEFAULT';
6828: $SIG{__DIE__}='DEFAULT';
6829: &status("Catching exception");
6830: &logthis("<font color='red'>CRITICAL: "
6831: ."ABNORMAL EXIT. Child $$ for server ".$perlvar{'lonHostID'}." died through "
6832: ."a crash with this error msg->[$error]</font>");
6833: &logthis('Famous last words: '.$status.' - '.$lastlog);
6834: if ($client) { print $client "error: $error\n"; }
6835: $server->close();
6836: die($error);
6837: }
6838: sub timeout {
6839: &status("Handling Timeout");
6840: &logthis("<font color='red'>CRITICAL: TIME OUT ".$$."</font>");
6841: &catchexception('Timeout');
6842: }
6843: # -------------------------------- Set signal handlers to record abnormal exits
6844:
6845:
6846: $SIG{'QUIT'}=\&catchexception;
6847: $SIG{__DIE__}=\&catchexception;
6848:
6849: # ---------------------------------- Read loncapa_apache.conf and loncapa.conf
6850: &status("Read loncapa.conf and loncapa_apache.conf");
6851: my $perlvarref=LONCAPA::Configuration::read_conf('loncapa.conf');
6852: %perlvar=%{$perlvarref};
6853: undef $perlvarref;
6854:
6855: # ----------------------------- Make sure this process is running from user=www
6856: my $wwwid=getpwnam('www');
6857: if ($wwwid!=$<) {
6858: my $emailto="$perlvar{'lonAdmEMail'},$perlvar{'lonSysEMail'}";
6859: my $subj="LON: $currenthostid User ID mismatch";
6860: system("echo 'User ID mismatch. lond must be run as user www.' |\
6861: mailto $emailto -s '$subj' > /dev/null");
6862: exit 1;
6863: }
6864:
6865: # --------------------------------------------- Check if other instance running
6866:
6867: my $pidfile="$perlvar{'lonDaemons'}/logs/lond.pid";
6868:
6869: if (-e $pidfile) {
6870: my $lfh=IO::File->new("$pidfile");
6871: my $pide=<$lfh>;
6872: chomp($pide);
6873: if (kill 0 => $pide) { die "already running"; }
6874: }
6875:
6876: # ------------------------------------------------------------- Read hosts file
6877:
6878:
6879:
6880: # establish SERVER socket, bind and listen.
6881: $server = IO::Socket::INET->new(LocalPort => $perlvar{'londPort'},
6882: Type => SOCK_STREAM,
6883: Proto => 'tcp',
6884: ReuseAddr => 1,
6885: Listen => 10 )
6886: or die "making socket: $@\n";
6887:
6888: # --------------------------------------------------------- Do global variables
6889:
6890: # global variables
6891:
6892: my %children = (); # keys are current child process IDs
6893:
6894: sub REAPER { # takes care of dead children
6895: $SIG{CHLD} = \&REAPER;
6896: &status("Handling child death");
6897: my $pid;
6898: do {
6899: $pid = waitpid(-1,&WNOHANG());
6900: if (defined($children{$pid})) {
6901: &logthis("Child $pid died");
6902: delete($children{$pid});
6903: } elsif ($pid > 0) {
6904: &logthis("Unknown Child $pid died");
6905: }
6906: } while ( $pid > 0 );
6907: foreach my $child (keys(%children)) {
6908: $pid = waitpid($child,&WNOHANG());
6909: if ($pid > 0) {
6910: &logthis("Child $child - $pid looks like we missed it's death");
6911: delete($children{$pid});
6912: }
6913: }
6914: &status("Finished Handling child death");
6915: }
6916:
6917: sub HUNTSMAN { # signal handler for SIGINT
6918: &status("Killing children (INT)");
6919: local($SIG{CHLD}) = 'IGNORE'; # we're going to kill our children
6920: kill 'INT' => keys %children;
6921: &logthis("Free socket: ".shutdown($server,2)); # free up socket
6922: my $execdir=$perlvar{'lonDaemons'};
6923: unlink("$execdir/logs/lond.pid");
6924: &logthis("<font color='red'>CRITICAL: Shutting down</font>");
6925: &status("Done killing children");
6926: exit; # clean up with dignity
6927: }
6928:
6929: sub HUPSMAN { # signal handler for SIGHUP
6930: local($SIG{CHLD}) = 'IGNORE'; # we're going to kill our children
6931: &status("Killing children for restart (HUP)");
6932: kill 'INT' => keys %children;
6933: &logthis("Free socket: ".shutdown($server,2)); # free up socket
6934: &logthis("<font color='red'>CRITICAL: Restarting</font>");
6935: my $execdir=$perlvar{'lonDaemons'};
6936: unlink("$execdir/logs/lond.pid");
6937: &status("Restarting self (HUP)");
6938: exec("$execdir/lond"); # here we go again
6939: }
6940:
6941: #
6942: # Reload the Apache daemon's state.
6943: # This is done by invoking /home/httpd/perl/apachereload
6944: # a setuid perl script that can be root for us to do this job.
6945: #
6946: sub ReloadApache {
6947: # --------------------------- Handle case of another apachereload process (locking)
6948: if (&LONCAPA::try_to_lock('/tmp/lock_apachereload')) {
6949: my $execdir = $perlvar{'lonDaemons'};
6950: my $script = $execdir."/apachereload";
6951: system($script);
6952: unlink('/tmp/lock_apachereload'); # Remove the lock file.
6953: }
6954: }
6955:
6956: #
6957: # Called in response to a USR2 signal.
6958: # - Reread hosts.tab
6959: # - All children connected to hosts that were removed from hosts.tab
6960: # are killed via SIGINT
6961: # - All children connected to previously existing hosts are sent SIGUSR1
6962: # - Our internal hosts hash is updated to reflect the new contents of
6963: # hosts.tab causing connections from hosts added to hosts.tab to
6964: # now be honored.
6965: #
6966: sub UpdateHosts {
6967: &status("Reload hosts.tab");
6968: logthis('<font color="blue"> Updating connections </font>');
6969: #
6970: # The %children hash has the set of IP's we currently have children
6971: # on. These need to be matched against records in the hosts.tab
6972: # Any ip's no longer in the table get killed off they correspond to
6973: # either dropped or changed hosts. Note that the re-read of the table
6974: # will take care of new and changed hosts as connections come into being.
6975:
6976: &Apache::lonnet::reset_hosts_info();
6977: my %active;
6978:
6979: foreach my $child (keys(%children)) {
6980: my $childip = $children{$child};
6981: if ($childip ne '127.0.0.1'
6982: && !defined(&Apache::lonnet::get_hosts_from_ip($childip))) {
6983: logthis('<font color="blue"> UpdateHosts killing child '
6984: ." $child for ip $childip </font>");
6985: kill('INT', $child);
6986: } else {
6987: $active{$child} = $childip;
6988: logthis('<font color="green"> keeping child for ip '
6989: ." $childip (pid=$child) </font>");
6990: }
6991: }
6992:
6993: my %oldconf = %secureconf;
6994: my %connchange;
6995: if (lonssl::Read_Connect_Config(\%secureconf,\%perlvar) eq 'ok') {
6996: logthis('<font color="blue"> Reloaded SSL connection rules </font>');
6997: } else {
6998: logthis('<font color="yellow"> Failed to reload SSL connection rules </font>');
6999: }
7000: if ((ref($oldconf{'connfrom'}) eq 'HASH') && (ref($secureconf{'connfrom'}) eq 'HASH')) {
7001: foreach my $type ('dom','intdom','other') {
7002: if ((($oldconf{'connfrom'}{$type} eq 'no') && ($secureconf{'connfrom'}{$type} eq 'req')) ||
7003: (($oldconf{'connfrom'}{$type} eq 'req') && ($secureconf{'connfrom'}{$type} eq 'no'))) {
7004: $connchange{$type} = 1;
7005: }
7006: }
7007: }
7008: if (keys(%connchange)) {
7009: foreach my $child (keys(%active)) {
7010: my $childip = $active{$child};
7011: if ($childip ne '127.0.0.1') {
7012: my $childhostname = gethostbyaddr(Socket::inet_aton($childip),AF_INET);
7013: if ($childhostname ne '') {
7014: my $childlonhost = &Apache::lonnet::get_server_homeID($childhostname);
7015: my ($samedom,$sameinst) = &set_client_info($childlonhost);
7016: if ($samedom) {
7017: if ($connchange{'dom'}) {
7018: logthis('<font color="blue"> UpdateHosts killing child '
7019: ." $child for ip $childip </font>");
7020: kill('INT', $child);
7021: }
7022: } elsif ($sameinst) {
7023: if ($connchange{'intdom'}) {
7024: logthis('<font color="blue"> UpdateHosts killing child '
7025: ." $child for ip $childip </font>");
7026: kill('INT', $child);
7027: }
7028: } else {
7029: if ($connchange{'other'}) {
7030: logthis('<font color="blue"> UpdateHosts killing child '
7031: ." $child for ip $childip </font>");
7032: kill('INT', $child);
7033: }
7034: }
7035: }
7036: }
7037: }
7038: }
7039: ReloadApache;
7040: &status("Finished reloading hosts.tab");
7041: }
7042:
7043: sub checkchildren {
7044: &status("Checking on the children (sending signals)");
7045: &initnewstatus();
7046: &logstatus();
7047: &logthis('Going to check on the children');
7048: my $docdir=$perlvar{'lonDocRoot'};
7049: foreach (sort keys %children) {
7050: #sleep 1;
7051: unless (kill 'USR1' => $_) {
7052: &logthis ('Child '.$_.' is dead');
7053: &logstatus($$.' is dead');
7054: delete($children{$_});
7055: }
7056: }
7057: sleep 5;
7058: $SIG{ALRM} = sub { Debug("timeout");
7059: die "timeout"; };
7060: $SIG{__DIE__} = 'DEFAULT';
7061: &status("Checking on the children (waiting for reports)");
7062: foreach (sort keys %children) {
7063: unless (-e "$docdir/lon-status/londchld/$_.txt") {
7064: eval {
7065: alarm(300);
7066: &logthis('Child '.$_.' did not respond');
7067: kill 9 => $_;
7068: #$emailto="$perlvar{'lonAdmEMail'},$perlvar{'lonSysEMail'}";
7069: #$subj="LON: $currenthostid killed lond process $_";
7070: #my $result=`echo 'Killed lond process $_.' | mailto $emailto -s '$subj' > /dev/null`;
7071: #$execdir=$perlvar{'lonDaemons'};
7072: #$result=`/bin/cp $execdir/logs/lond.log $execdir/logs/lond.log.$_`;
7073: delete($children{$_});
7074: alarm(0);
7075: }
7076: }
7077: }
7078: $SIG{ALRM} = 'DEFAULT';
7079: $SIG{__DIE__} = \&catchexception;
7080: &status("Finished checking children");
7081: &logthis('Finished Checking children');
7082: }
7083:
7084: # --------------------------------------------------------------------- Logging
7085:
7086: sub logthis {
7087: my $message=shift;
7088: my $execdir=$perlvar{'lonDaemons'};
7089: my $fh=IO::File->new(">>$execdir/logs/lond.log");
7090: my $now=time;
7091: my $local=localtime($now);
7092: $lastlog=$local.': '.$message;
7093: print $fh "$local ($$): $message\n";
7094: }
7095:
7096: # ------------------------- Conditional log if $DEBUG true.
7097: sub Debug {
7098: my $message = shift;
7099: if($DEBUG) {
7100: &logthis($message);
7101: }
7102: }
7103:
7104: #
7105: # Sub to do replies to client.. this gives a hook for some
7106: # debug tracing too:
7107: # Parameters:
7108: # fd - File open on client.
7109: # reply - Text to send to client.
7110: # request - Original request from client.
7111: #
7112: #NOTE $reply must be terminated by exactly *one* \n. If $reply is a reference
7113: #this is done automatically ($$reply must not contain any \n in this case).
7114: #If $reply is a string the caller has to ensure this.
7115: sub Reply {
7116: my ($fd, $reply, $request) = @_;
7117: if (ref($reply)) {
7118: print $fd $$reply;
7119: print $fd "\n";
7120: if ($DEBUG) { Debug("Request was $request Reply was $$reply"); }
7121: } else {
7122: print $fd $reply;
7123: if ($DEBUG) { Debug("Request was $request Reply was $reply"); }
7124: }
7125: $Transactions++;
7126: }
7127:
7128:
7129: #
7130: # Sub to report a failure.
7131: # This function:
7132: # - Increments the failure statistic counters.
7133: # - Invokes Reply to send the error message to the client.
7134: # Parameters:
7135: # fd - File descriptor open on the client
7136: # reply - Reply text to emit.
7137: # request - The original request message (used by Reply
7138: # to debug if that's enabled.
7139: # Implicit outputs:
7140: # $Failures- The number of failures is incremented.
7141: # Reply (invoked here) sends a message to the
7142: # client:
7143: #
7144: sub Failure {
7145: my $fd = shift;
7146: my $reply = shift;
7147: my $request = shift;
7148:
7149: $Failures++;
7150: Reply($fd, $reply, $request); # That's simple eh?
7151: }
7152: # ------------------------------------------------------------------ Log status
7153:
7154: sub logstatus {
7155: &status("Doing logging");
7156: my $docdir=$perlvar{'lonDocRoot'};
7157: {
7158: my $fh=IO::File->new(">$docdir/lon-status/londchld/$$.txt");
7159: print $fh $status."\n".$lastlog."\n".time."\n$keymode";
7160: $fh->close();
7161: }
7162: &status("Finished $$.txt");
7163: {
7164: open(LOG,">>$docdir/lon-status/londstatus.txt");
7165: flock(LOG,LOCK_EX);
7166: print LOG $$."\t".$clientname."\t".$currenthostid."\t"
7167: .$status."\t".$lastlog."\t $keymode\n";
7168: flock(LOG,LOCK_UN);
7169: close(LOG);
7170: }
7171: &status("Finished logging");
7172: }
7173:
7174: sub initnewstatus {
7175: my $docdir=$perlvar{'lonDocRoot'};
7176: my $fh=IO::File->new(">$docdir/lon-status/londstatus.txt");
7177: my $now=time();
7178: my $local=localtime($now);
7179: print $fh "LOND status $local - parent $$\n\n";
7180: opendir(DIR,"$docdir/lon-status/londchld");
7181: while (my $filename=readdir(DIR)) {
7182: unlink("$docdir/lon-status/londchld/$filename");
7183: }
7184: closedir(DIR);
7185: }
7186:
7187: # -------------------------------------------------------------- Status setting
7188:
7189: sub status {
7190: my $what=shift;
7191: my $now=time;
7192: my $local=localtime($now);
7193: $status=$local.': '.$what;
7194: $0='lond: '.$what.' '.$local;
7195: }
7196:
7197: # -------------------------------------------------------------- Talk to lonsql
7198:
7199: sub sql_reply {
7200: my ($cmd)=@_;
7201: my $answer=&sub_sql_reply($cmd);
7202: if ($answer eq 'con_lost') { $answer=&sub_sql_reply($cmd); }
7203: return $answer;
7204: }
7205:
7206: sub sub_sql_reply {
7207: my ($cmd)=@_;
7208: my $unixsock="mysqlsock";
7209: my $peerfile="$perlvar{'lonSockDir'}/$unixsock";
7210: my $sclient=IO::Socket::UNIX->new(Peer =>"$peerfile",
7211: Type => SOCK_STREAM,
7212: Timeout => 10)
7213: or return "con_lost";
7214: print $sclient "$cmd:$currentdomainid\n";
7215: my $answer=<$sclient>;
7216: chomp($answer);
7217: if (!$answer) { $answer="con_lost"; }
7218: return $answer;
7219: }
7220:
7221: # --------------------------------------- Is this the home server of an author?
7222:
7223: sub ishome {
7224: my $author=shift;
7225: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
7226: my ($udom,$uname)=split(/\//,$author);
7227: my $proname=propath($udom,$uname);
7228: if (-e $proname) {
7229: return 'owner';
7230: } else {
7231: return 'not_owner';
7232: }
7233: }
7234:
7235: # ======================================================= Continue main program
7236: # ---------------------------------------------------- Fork once and dissociate
7237:
7238: my $fpid=fork;
7239: exit if $fpid;
7240: die "Couldn't fork: $!" unless defined ($fpid);
7241:
7242: POSIX::setsid() or die "Can't start new session: $!";
7243:
7244: # ------------------------------------------------------- Write our PID on disk
7245:
7246: my $execdir=$perlvar{'lonDaemons'};
7247: open (PIDSAVE,">$execdir/logs/lond.pid");
7248: print PIDSAVE "$$\n";
7249: close(PIDSAVE);
7250: &logthis("<font color='red'>CRITICAL: ---------- Starting ----------</font>");
7251: &status('Starting');
7252:
7253:
7254:
7255: # ----------------------------------------------------- Install signal handlers
7256:
7257:
7258: $SIG{CHLD} = \&REAPER;
7259: $SIG{INT} = $SIG{TERM} = \&HUNTSMAN;
7260: $SIG{HUP} = \&HUPSMAN;
7261: $SIG{USR1} = \&checkchildren;
7262: $SIG{USR2} = \&UpdateHosts;
7263:
7264: # Read the host hashes:
7265: &Apache::lonnet::load_hosts_tab();
7266: my %iphost = &Apache::lonnet::get_iphost(1);
7267:
7268: $dist=`$perlvar{'lonDaemons'}/distprobe`;
7269:
7270: my $arch = `uname -i`;
7271: chomp($arch);
7272: if ($arch eq 'unknown') {
7273: $arch = `uname -m`;
7274: chomp($arch);
7275: }
7276:
7277: unless (lonssl::Read_Connect_Config(\%secureconf,\%perlvar) eq 'ok') {
7278: &logthis('<font color="blue">No connectionrules table. Will fallback to loncapa.conf</font>');
7279: }
7280:
7281: # --------------------------------------------------------------
7282: # Accept connections. When a connection comes in, it is validated
7283: # and if good, a child process is created to process transactions
7284: # along the connection.
7285:
7286: while (1) {
7287: &status('Starting accept');
7288: $client = $server->accept() or next;
7289: &status('Accepted '.$client.' off to spawn');
7290: make_new_child($client);
7291: &status('Finished spawning');
7292: }
7293:
7294: sub make_new_child {
7295: my $pid;
7296: # my $cipher; # Now global
7297: my $sigset;
7298:
7299: $client = shift;
7300: &status('Starting new child '.$client);
7301: &logthis('<font color="green"> Attempting to start child ('.$client.
7302: ")</font>");
7303: # block signal for fork
7304: $sigset = POSIX::SigSet->new(SIGINT);
7305: sigprocmask(SIG_BLOCK, $sigset)
7306: or die "Can't block SIGINT for fork: $!\n";
7307:
7308: die "fork: $!" unless defined ($pid = fork);
7309:
7310: $client->sockopt(SO_KEEPALIVE, 1); # Enable monitoring of
7311: # connection liveness.
7312:
7313: #
7314: # Figure out who we're talking to so we can record the peer in
7315: # the pid hash.
7316: #
7317: my $caller = getpeername($client);
7318: my ($port,$iaddr);
7319: if (defined($caller) && length($caller) > 0) {
7320: ($port,$iaddr)=unpack_sockaddr_in($caller);
7321: } else {
7322: &logthis("Unable to determine who caller was, getpeername returned nothing");
7323: }
7324: if (defined($iaddr)) {
7325: $clientip = inet_ntoa($iaddr);
7326: Debug("Connected with $clientip");
7327: } else {
7328: &logthis("Unable to determine clientip");
7329: $clientip='Unavailable';
7330: }
7331:
7332: if ($pid) {
7333: # Parent records the child's birth and returns.
7334: sigprocmask(SIG_UNBLOCK, $sigset)
7335: or die "Can't unblock SIGINT for fork: $!\n";
7336: $children{$pid} = $clientip;
7337: &status('Started child '.$pid);
7338: close($client);
7339: return;
7340: } else {
7341: # Child can *not* return from this subroutine.
7342: $SIG{INT} = 'DEFAULT'; # make SIGINT kill us as it did before
7343: $SIG{CHLD} = 'DEFAULT'; #make this default so that pwauth returns
7344: #don't get intercepted
7345: $SIG{USR1}= \&logstatus;
7346: $SIG{ALRM}= \&timeout;
7347: #
7348: # Block sigpipe as it gets thrownon socket disconnect and we want to
7349: # deal with that as a read faiure instead.
7350: #
7351: my $blockset = POSIX::SigSet->new(SIGPIPE);
7352: sigprocmask(SIG_BLOCK, $blockset);
7353:
7354: $lastlog='Forked ';
7355: $status='Forked';
7356:
7357: # unblock signals
7358: sigprocmask(SIG_UNBLOCK, $sigset)
7359: or die "Can't unblock SIGINT for fork: $!\n";
7360:
7361: # my $tmpsnum=0; # Now global
7362: #---------------------------------------------------- kerberos 5 initialization
7363: &Authen::Krb5::init_context();
7364:
7365: my $no_ets;
7366: if ($dist =~ /^(?:centos|rhes|scientific)(\d+)$/) {
7367: if ($1 >= 7) {
7368: $no_ets = 1;
7369: }
7370: } elsif ($dist =~ /^suse(\d+\.\d+)$/) {
7371: if (($1 eq '9.3') || ($1 >= 12.2)) {
7372: $no_ets = 1;
7373: }
7374: } elsif ($dist =~ /^sles(\d+)$/) {
7375: if ($1 > 11) {
7376: $no_ets = 1;
7377: }
7378: } elsif ($dist =~ /^fedora(\d+)$/) {
7379: if ($1 < 7) {
7380: $no_ets = 1;
7381: }
7382: }
7383: unless ($no_ets) {
7384: &Authen::Krb5::init_ets();
7385: }
7386:
7387: &status('Accepted connection');
7388: # =============================================================================
7389: # do something with the connection
7390: # -----------------------------------------------------------------------------
7391: # see if we know client and 'check' for spoof IP by ineffective challenge
7392:
7393: my $outsideip=$clientip;
7394: if ($clientip eq '127.0.0.1') {
7395: $outsideip=&Apache::lonnet::get_host_ip($perlvar{'lonHostID'});
7396: }
7397: &ReadManagerTable();
7398: my $clientrec=defined(&Apache::lonnet::get_hosts_from_ip($outsideip));
7399: my $ismanager=($managers{$outsideip} ne undef);
7400: $clientname = "[unknown]";
7401: if($clientrec) { # Establish client type.
7402: $ConnectionType = "client";
7403: $clientname = (&Apache::lonnet::get_hosts_from_ip($outsideip))[-1];
7404: if($ismanager) {
7405: $ConnectionType = "both";
7406: }
7407: } else {
7408: $ConnectionType = "manager";
7409: $clientname = $managers{$outsideip};
7410: }
7411: my ($clientok,$clientinfoset);
7412:
7413: if ($clientrec || $ismanager) {
7414: &status("Waiting for init from $clientip $clientname");
7415: &logthis('<font color="yellow">INFO: Connection, '.
7416: $clientip.
7417: " ($clientname) connection type = $ConnectionType </font>" );
7418: &status("Connecting $clientip ($clientname))");
7419: my $remotereq=<$client>;
7420: chomp($remotereq);
7421: Debug("Got init: $remotereq");
7422:
7423: if ($remotereq =~ /^init/) {
7424: &sethost("sethost:$perlvar{'lonHostID'}");
7425: #
7426: # If the remote is attempting a local init... give that a try:
7427: #
7428: (my $i, my $inittype, $clientversion) = split(/:/, $remotereq);
7429: # For LON-CAPA 2.9, the client session will have sent its LON-CAPA
7430: # version when initiating the connection. For LON-CAPA 2.8 and older,
7431: # the version is retrieved from the global %loncaparevs in lonnet.pm.
7432: # $clientversion contains path to keyfile if $inittype eq 'local'
7433: # it's overridden below in this case
7434: $clientversion ||= $Apache::lonnet::loncaparevs{$clientname};
7435:
7436: # If the connection type is ssl, but I didn't get my
7437: # certificate files yet, then I'll drop back to
7438: # insecure (if allowed).
7439:
7440: if ($inittype eq "ssl") {
7441: my $context;
7442: if ($clientsamedom) {
7443: $context = 'dom';
7444: if ($secureconf{'connfrom'}{'dom'} eq 'no') {
7445: $inittype = "";
7446: }
7447: } elsif ($clientsameinst) {
7448: $context = 'intdom';
7449: if ($secureconf{'connfrom'}{'intdom'} eq 'no') {
7450: $inittype = "";
7451: }
7452: } else {
7453: $context = 'other';
7454: if ($secureconf{'connfrom'}{'other'} eq 'no') {
7455: $inittype = "";
7456: }
7457: }
7458: if ($inittype eq '') {
7459: &logthis("<font color=\"blue\"> Domain config set "
7460: ."to no ssl for $clientname (context: $context)"
7461: ." -- trying insecure auth</font>");
7462: }
7463: }
7464:
7465: if($inittype eq "ssl") {
7466: my ($ca, $cert) = lonssl::CertificateFile;
7467: my $kfile = lonssl::KeyFile;
7468: if((!$ca) ||
7469: (!$cert) ||
7470: (!$kfile)) {
7471: $inittype = ""; # This forces insecure attempt.
7472: &logthis("<font color=\"blue\"> Certificates not "
7473: ."installed -- trying insecure auth</font>");
7474: } else { # SSL certificates are in place so
7475: } # Leave the inittype alone.
7476: }
7477:
7478: if($inittype eq "local") {
7479: $clientversion = $perlvar{'lonVersion'};
7480: my $key = LocalConnection($client, $remotereq);
7481: if($key) {
7482: Debug("Got local key $key");
7483: $clientok = 1;
7484: my $cipherkey = pack("H32", $key);
7485: $cipher = new IDEA($cipherkey);
7486: print $client "ok:local\n";
7487: &logthis('<font color="green">'
7488: . "Successful local authentication </font>");
7489: $keymode = "local"
7490: } else {
7491: Debug("Failed to get local key");
7492: $clientok = 0;
7493: shutdown($client, 3);
7494: close $client;
7495: }
7496: } elsif ($inittype eq "ssl") {
7497: my $key = SSLConnection($client,$clientname);
7498: if ($key) {
7499: $clientok = 1;
7500: my $cipherkey = pack("H32", $key);
7501: $cipher = new IDEA($cipherkey);
7502: &logthis('<font color="green">'
7503: ."Successfull ssl authentication with $clientname </font>");
7504: $keymode = "ssl";
7505:
7506: } else {
7507: $clientok = 0;
7508: close $client;
7509: }
7510:
7511: } else {
7512: $clientinfoset = &set_client_info();
7513: my $ok = InsecureConnection($client);
7514: if($ok) {
7515: $clientok = 1;
7516: &logthis('<font color="green">'
7517: ."Successful insecure authentication with $clientname </font>");
7518: print $client "ok\n";
7519: $keymode = "insecure";
7520: } else {
7521: &logthis('<font color="yellow">'
7522: ."Attempted insecure connection disallowed </font>");
7523: close $client;
7524: $clientok = 0;
7525: }
7526: }
7527: } else {
7528: &logthis(
7529: "<font color='blue'>WARNING: "
7530: ."$clientip failed to initialize: >$remotereq< </font>");
7531: &status('No init '.$clientip);
7532: }
7533: } else {
7534: &logthis(
7535: "<font color='blue'>WARNING: Unknown client $clientip</font>");
7536: &status('Hung up on '.$clientip);
7537: }
7538:
7539: if ($clientok) {
7540: # ---------------- New known client connecting, could mean machine online again
7541: if (&Apache::lonnet::get_host_ip($currenthostid) ne $clientip
7542: && $clientip ne '127.0.0.1') {
7543: &Apache::lonnet::reconlonc($clientname);
7544: }
7545: &logthis("<font color='green'>Established connection: $clientname</font>");
7546: &status('Will listen to '.$clientname);
7547: # ------------------------------------------------------------ Process requests
7548: my $keep_going = 1;
7549: my $user_input;
7550: unless ($clientinfoset) {
7551: $clientinfoset = &set_client_info();
7552: }
7553: $clientremoteok = 0;
7554: unless ($clientsameinst) {
7555: $clientremoteok = 1;
7556: my $defdom = &Apache::lonnet::host_domain($perlvar{'lonHostID'});
7557: %clientprohibited = &get_prohibited($defdom);
7558: if ($clientintdom) {
7559: my $remsessconf = &get_usersession_config($defdom,'remotesession');
7560: if (ref($remsessconf) eq 'HASH') {
7561: if (ref($remsessconf->{'remote'}) eq 'HASH') {
7562: if (ref($remsessconf->{'remote'}->{'excludedomain'}) eq 'ARRAY') {
7563: if (grep(/^\Q$clientintdom\E$/,@{$remsessconf->{'remote'}->{'excludedomain'}})) {
7564: $clientremoteok = 0;
7565: }
7566: }
7567: if (ref($remsessconf->{'remote'}->{'includedomain'}) eq 'ARRAY') {
7568: if (grep(/^\Q$clientintdom\E$/,@{$remsessconf->{'remote'}->{'includedomain'}})) {
7569: $clientremoteok = 1;
7570: } else {
7571: $clientremoteok = 0;
7572: }
7573: }
7574: }
7575: }
7576: }
7577: }
7578: while(($user_input = get_request) && $keep_going) {
7579: alarm(120);
7580: Debug("Main: Got $user_input\n");
7581: $keep_going = &process_request($user_input);
7582: alarm(0);
7583: &status('Listening to '.$clientname." ($keymode)");
7584: }
7585:
7586: # --------------------------------------------- client unknown or fishy, refuse
7587: } else {
7588: print $client "refused\n";
7589: $client->close();
7590: &logthis("<font color='blue'>WARNING: "
7591: ."Rejected client $clientip, closing connection</font>");
7592: }
7593: }
7594:
7595: # =============================================================================
7596:
7597: &logthis("<font color='red'>CRITICAL: "
7598: ."Disconnect from $clientip ($clientname)</font>");
7599:
7600:
7601: # this exit is VERY important, otherwise the child will become
7602: # a producer of more and more children, forking yourself into
7603: # process death.
7604: exit;
7605:
7606: }
7607:
7608: #
7609: # Used to determine if a particular client is from the same domain
7610: # as the current server, or from the same internet domain.
7611: #
7612: # Optional input -- the client to check for domain and internet domain.
7613: # If not specified, defaults to the package variable: $clientname
7614: #
7615: # If called in array context will not set package variables, but will
7616: # instead return an array of two values - (a) true if client is in the
7617: # same domain as the server, and (b) true if client is in the same internet
7618: # domain.
7619: #
7620: # If called in scalar context, sets package variables for current client:
7621: #
7622: # $clienthomedom - LonCAPA domain of homeID for client.
7623: # $clientsamedom - LonCAPA domain same for this host and client.
7624: # $clientintdom - LonCAPA "internet domain" for client.
7625: # $clientsameinst - LonCAPA "internet domain" same for this host & client.
7626: #
7627: # returns 1 to indicate package variables have been set for current client.
7628: #
7629:
7630: sub set_client_info {
7631: my ($lonhost) = @_;
7632: $lonhost ||= $clientname;
7633: my $clienthost = &Apache::lonnet::hostname($lonhost);
7634: my $clientserverhomeID = &Apache::lonnet::get_server_homeID($clienthost);
7635: my $homedom = &Apache::lonnet::host_domain($clientserverhomeID);
7636: my $samedom = 0;
7637: if ($perlvar{'lonDefDom'} eq $homedom) {
7638: $samedom = 1;
7639: }
7640: my $intdom = &Apache::lonnet::internet_dom($clientserverhomeID);
7641: my $sameinst = 0;
7642: if ($intdom ne '') {
7643: my $internet_names = &Apache::lonnet::get_internet_names($currenthostid);
7644: if (ref($internet_names) eq 'ARRAY') {
7645: if (grep(/^\Q$intdom\E$/,@{$internet_names})) {
7646: $sameinst = 1;
7647: }
7648: }
7649: }
7650: if (wantarray) {
7651: return ($samedom,$sameinst);
7652: } else {
7653: $clienthomedom = $homedom;
7654: $clientsamedom = $samedom;
7655: $clientintdom = $intdom;
7656: $clientsameinst = $sameinst;
7657: return 1;
7658: }
7659: }
7660:
7661: #
7662: # Determine if a user is an author for the indicated domain.
7663: #
7664: # Parameters:
7665: # domain - domain to check in .
7666: # user - Name of user to check.
7667: #
7668: # Return:
7669: # 1 - User is an author for domain.
7670: # 0 - User is not an author for domain.
7671: sub is_author {
7672: my ($domain, $user) = @_;
7673:
7674: &Debug("is_author: $user @ $domain");
7675:
7676: my $hashref = &tie_user_hash($domain, $user, "roles",
7677: &GDBM_READER());
7678:
7679: # Author role should show up as a key /domain/_au
7680:
7681: my $value;
7682: if ($hashref) {
7683:
7684: my $key = "/$domain/_au";
7685: if (defined($hashref)) {
7686: $value = $hashref->{$key};
7687: if(!untie_user_hash($hashref)) {
7688: return 'error: ' . ($!+0)." untie (GDBM) Failed";
7689: }
7690: }
7691:
7692: if(defined($value)) {
7693: &Debug("$user @ $domain is an author");
7694: }
7695: } else {
7696: return 'error: '.($!+0)." tie (GDBM) Failed";
7697: }
7698:
7699: return defined($value);
7700: }
7701: #
7702: # Checks to see if the input roleput request was to set
7703: # an author role. If so, creates construction space
7704: # Parameters:
7705: # request - The request sent to the rolesput subchunk.
7706: # We're looking for /domain/_au
7707: # domain - The domain in which the user is having roles doctored.
7708: # user - Name of the user for which the role is being put.
7709: # authtype - The authentication type associated with the user.
7710: #
7711: sub manage_permissions {
7712: my ($request, $domain, $user, $authtype) = @_;
7713: # See if the request is of the form /$domain/_au
7714: if($request =~ /^(\/\Q$domain\E\/_au)$/) { # It's an author rolesput...
7715: my $path=$perlvar{'lonDocRoot'}."/priv/$domain";
7716: unless (-e $path) {
7717: mkdir($path);
7718: }
7719: unless (-e $path.'/'.$user) {
7720: mkdir($path.'/'.$user);
7721: }
7722: }
7723: }
7724:
7725:
7726: #
7727: # Return the full path of a user password file, whether it exists or not.
7728: # Parameters:
7729: # domain - Domain in which the password file lives.
7730: # user - name of the user.
7731: # Returns:
7732: # Full passwd path:
7733: #
7734: sub password_path {
7735: my ($domain, $user) = @_;
7736: return &propath($domain, $user).'/passwd';
7737: }
7738:
7739: # Password Filename
7740: # Returns the path to a passwd file given domain and user... only if
7741: # it exists.
7742: # Parameters:
7743: # domain - Domain in which to search.
7744: # user - username.
7745: # Returns:
7746: # - If the password file exists returns its path.
7747: # - If the password file does not exist, returns undefined.
7748: #
7749: sub password_filename {
7750: my ($domain, $user) = @_;
7751:
7752: Debug ("PasswordFilename called: dom = $domain user = $user");
7753:
7754: my $path = &password_path($domain, $user);
7755: Debug("PasswordFilename got path: $path");
7756: if(-e $path) {
7757: return $path;
7758: } else {
7759: return undef;
7760: }
7761: }
7762:
7763: #
7764: # Rewrite the contents of the user's passwd file.
7765: # Parameters:
7766: # domain - domain of the user.
7767: # name - User's name.
7768: # contents - New contents of the file.
7769: # saveold - (optional). If true save old file in a passwd.bak file.
7770: # Returns:
7771: # 0 - Failed.
7772: # 1 - Success.
7773: #
7774: sub rewrite_password_file {
7775: my ($domain, $user, $contents, $saveold) = @_;
7776:
7777: my $file = &password_filename($domain, $user);
7778: if (defined $file) {
7779: if ($saveold) {
7780: my $bakfile = $file.'.bak';
7781: if (CopyFile($file,$bakfile)) {
7782: chmod(0400,$bakfile);
7783: &logthis("Old password saved in passwd.bak for internally authenticated user: $user:$domain");
7784: } else {
7785: &logthis("Failed to save old password in passwd.bak for internally authenticated user: $user:$domain");
7786: }
7787: }
7788: my $pf = IO::File->new(">$file");
7789: if($pf) {
7790: print $pf "$contents\n";
7791: return 1;
7792: } else {
7793: return 0;
7794: }
7795: } else {
7796: return 0;
7797: }
7798:
7799: }
7800:
7801: #
7802: # get_auth_type - Determines the authorization type of a user in a domain.
7803:
7804: # Returns the authorization type or nouser if there is no such user.
7805: #
7806: sub get_auth_type {
7807: my ($domain, $user) = @_;
7808:
7809: Debug("get_auth_type( $domain, $user ) \n");
7810: my $proname = &propath($domain, $user);
7811: my $passwdfile = "$proname/passwd";
7812: if( -e $passwdfile ) {
7813: my $pf = IO::File->new($passwdfile);
7814: my $realpassword = <$pf>;
7815: chomp($realpassword);
7816: Debug("Password info = $realpassword\n");
7817: my ($authtype, $contentpwd) = split(/:/, $realpassword);
7818: Debug("Authtype = $authtype, content = $contentpwd\n");
7819: return "$authtype:$contentpwd";
7820: } else {
7821: Debug("Returning nouser");
7822: return "nouser";
7823: }
7824: }
7825:
7826: #
7827: # Validate a user given their domain, name and password. This utility
7828: # function is used by both AuthenticateHandler and ChangePasswordHandler
7829: # to validate the login credentials of a user.
7830: # Parameters:
7831: # $domain - The domain being logged into (this is required due to
7832: # the capability for multihomed systems.
7833: # $user - The name of the user being validated.
7834: # $password - The user's propoposed password.
7835: #
7836: # Returns:
7837: # 1 - The domain,user,pasword triplet corresponds to a valid
7838: # user.
7839: # 0 - The domain,user,password triplet is not a valid user.
7840: #
7841: sub validate_user {
7842: my ($domain, $user, $password, $checkdefauth) = @_;
7843:
7844: # Why negative ~pi you may well ask? Well this function is about
7845: # authentication, and therefore very important to get right.
7846: # I've initialized the flag that determines whether or not I've
7847: # validated correctly to a value it's not supposed to get.
7848: # At the end of this function. I'll ensure that it's not still that
7849: # value so we don't just wind up returning some accidental value
7850: # as a result of executing an unforseen code path that
7851: # did not set $validated. At the end of valid execution paths,
7852: # validated shoule be 1 for success or 0 for failuer.
7853:
7854: my $validated = -3.14159;
7855:
7856: # How we authenticate is determined by the type of authentication
7857: # the user has been assigned. If the authentication type is
7858: # "nouser", the user does not exist so we will return 0.
7859:
7860: my $contents = &get_auth_type($domain, $user);
7861: my ($howpwd, $contentpwd) = split(/:/, $contents);
7862:
7863: my $null = pack("C",0); # Used by kerberos auth types.
7864:
7865: if ($howpwd eq 'nouser') {
7866: if ($checkdefauth) {
7867: my %domdefaults = &Apache::lonnet::get_domain_defaults($domain);
7868: if ($domdefaults{'auth_def'} eq 'localauth') {
7869: $howpwd = $domdefaults{'auth_def'};
7870: $contentpwd = $domdefaults{'auth_arg_def'};
7871: } elsif ((($domdefaults{'auth_def'} eq 'krb4') ||
7872: ($domdefaults{'auth_def'} eq 'krb5')) &&
7873: ($domdefaults{'auth_arg_def'} ne '')) {
7874: $howpwd = $domdefaults{'auth_def'};
7875: $contentpwd = $domdefaults{'auth_arg_def'};
7876: }
7877: }
7878: }
7879: if ($howpwd ne 'nouser') {
7880: if($howpwd eq "internal") { # Encrypted is in local password file.
7881: if (length($contentpwd) == 13) {
7882: $validated = (crypt($password,$contentpwd) eq $contentpwd);
7883: if ($validated) {
7884: my %domdefaults = &Apache::lonnet::get_domain_defaults($domain);
7885: if ($domdefaults{'intauth_switch'}) {
7886: my $ncpass = &hash_passwd($domain,$password);
7887: my $saveold;
7888: if ($domdefaults{'intauth_switch'} == 2) {
7889: $saveold = 1;
7890: }
7891: if (&rewrite_password_file($domain,$user,"$howpwd:$ncpass",$saveold)) {
7892: &update_passwd_history($user,$domain,$howpwd,'conversion');
7893: &logthis("Validated password hashed with bcrypt for $user:$domain");
7894: }
7895: }
7896: }
7897: } else {
7898: $validated = &check_internal_passwd($password,$contentpwd,$domain,$user);
7899: }
7900: }
7901: elsif ($howpwd eq "unix") { # User is a normal unix user.
7902: $contentpwd = (getpwnam($user))[1];
7903: if($contentpwd) {
7904: if($contentpwd eq 'x') { # Shadow password file...
7905: my $pwauth_path = "/usr/local/sbin/pwauth";
7906: open PWAUTH, "|$pwauth_path" or
7907: die "Cannot invoke authentication";
7908: print PWAUTH "$user\n$password\n";
7909: close PWAUTH;
7910: $validated = ! $?;
7911:
7912: } else { # Passwords in /etc/passwd.
7913: $validated = (crypt($password,
7914: $contentpwd) eq $contentpwd);
7915: }
7916: } else {
7917: $validated = 0;
7918: }
7919: } elsif ($howpwd eq "krb4") { # user is in kerberos 4 auth. domain.
7920: my $checkwithkrb5 = 0;
7921: if ($dist =~/^fedora(\d+)$/) {
7922: if ($1 > 11) {
7923: $checkwithkrb5 = 1;
7924: }
7925: } elsif ($dist =~ /^suse([\d.]+)$/) {
7926: if ($1 > 11.1) {
7927: $checkwithkrb5 = 1;
7928: }
7929: }
7930: if ($checkwithkrb5) {
7931: $validated = &krb5_authen($password,$null,$user,$contentpwd);
7932: } else {
7933: $validated = &krb4_authen($password,$null,$user,$contentpwd);
7934: }
7935: } elsif ($howpwd eq "krb5") { # User is in kerberos 5 auth. domain.
7936: $validated = &krb5_authen($password,$null,$user,$contentpwd);
7937: } elsif ($howpwd eq "localauth") {
7938: # Authenticate via installation specific authentcation method:
7939: $validated = &localauth::localauth($user,
7940: $password,
7941: $contentpwd,
7942: $domain);
7943: if ($validated < 0) {
7944: &logthis("localauth for $contentpwd $user:$domain returned a $validated");
7945: $validated = 0;
7946: }
7947: } else { # Unrecognized auth is also bad.
7948: $validated = 0;
7949: }
7950: } else {
7951: $validated = 0;
7952: }
7953: #
7954: # $validated has the correct stat of the authentication:
7955: #
7956:
7957: unless ($validated != -3.14159) {
7958: # I >really really< want to know if this happens.
7959: # since it indicates that user authentication is badly
7960: # broken in some code path.
7961: #
7962: die "ValidateUser - failed to set the value of validated $domain, $user $password";
7963: }
7964: return $validated;
7965: }
7966:
7967: sub check_internal_passwd {
7968: my ($plainpass,$stored,$domain,$user) = @_;
7969: my (undef,$method,@rest) = split(/!/,$stored);
7970: if ($method eq 'bcrypt') {
7971: my $result = &hash_passwd($domain,$plainpass,@rest);
7972: if ($result ne $stored) {
7973: return 0;
7974: }
7975: my %domdefaults = &Apache::lonnet::get_domain_defaults($domain);
7976: if ($domdefaults{'intauth_check'}) {
7977: # Upgrade to a larger number of rounds if necessary
7978: my $defaultcost = $domdefaults{'intauth_cost'};
7979: if (($defaultcost eq '') || ($defaultcost =~ /D/)) {
7980: $defaultcost = 10;
7981: }
7982: if (int($rest[0])<int($defaultcost)) {
7983: if ($domdefaults{'intauth_check'} == 1) {
7984: my $ncpass = &hash_passwd($domain,$plainpass);
7985: if (&rewrite_password_file($domain,$user,"internal:$ncpass")) {
7986: &update_passwd_history($user,$domain,'internal','update cost');
7987: &logthis("Validated password hashed with bcrypt for $user:$domain");
7988: }
7989: return 1;
7990: } elsif ($domdefaults{'intauth_check'} == 2) {
7991: return 0;
7992: }
7993: }
7994: } else {
7995: return 1;
7996: }
7997: }
7998: return 0;
7999: }
8000:
8001: sub get_last_authchg {
8002: my ($domain,$user) = @_;
8003: my $lastmod;
8004: my $logname = &propath($domain,$user).'/passwd.log';
8005: if (-e "$logname") {
8006: $lastmod = (stat("$logname"))[9];
8007: }
8008: return $lastmod;
8009: }
8010:
8011: sub krb4_authen {
8012: my ($password,$null,$user,$contentpwd) = @_;
8013: my $validated = 0;
8014: if (!($password =~ /$null/) ) { # Null password not allowed.
8015: eval {
8016: require Authen::Krb4;
8017: };
8018: if (!$@) {
8019: my $k4error = &Authen::Krb4::get_pw_in_tkt($user,
8020: "",
8021: $contentpwd,,
8022: 'krbtgt',
8023: $contentpwd,
8024: 1,
8025: $password);
8026: if(!$k4error) {
8027: $validated = 1;
8028: } else {
8029: $validated = 0;
8030: &logthis('krb4: '.$user.', '.$contentpwd.', '.
8031: &Authen::Krb4::get_err_txt($Authen::Krb4::error));
8032: }
8033: } else {
8034: $validated = krb5_authen($password,$null,$user,$contentpwd);
8035: }
8036: }
8037: return $validated;
8038: }
8039:
8040: sub krb5_authen {
8041: my ($password,$null,$user,$contentpwd) = @_;
8042: my $validated = 0;
8043: if(!($password =~ /$null/)) { # Null password not allowed.
8044: my $krbclient = &Authen::Krb5::parse_name($user.'@'
8045: .$contentpwd);
8046: my $krbservice = "krbtgt/".$contentpwd."\@".$contentpwd;
8047: my $krbserver = &Authen::Krb5::parse_name($krbservice);
8048: my $credentials= &Authen::Krb5::cc_default();
8049: $credentials->initialize(&Authen::Krb5::parse_name($user.'@'
8050: .$contentpwd));
8051: my $krbreturn;
8052: if (exists(&Authen::Krb5::get_init_creds_password)) {
8053: $krbreturn =
8054: &Authen::Krb5::get_init_creds_password($krbclient,$password,
8055: $krbservice);
8056: $validated = (ref($krbreturn) eq 'Authen::Krb5::Creds');
8057: } else {
8058: $krbreturn =
8059: &Authen::Krb5::get_in_tkt_with_password($krbclient,$krbserver,
8060: $password,$credentials);
8061: $validated = ($krbreturn == 1);
8062: }
8063: if (!$validated) {
8064: &logthis('krb5: '.$user.', '.$contentpwd.', '.
8065: &Authen::Krb5::error());
8066: }
8067: }
8068: return $validated;
8069: }
8070:
8071: sub addline {
8072: my ($fname,$hostid,$ip,$newline)=@_;
8073: my $contents;
8074: my $found=0;
8075: my $expr='^'.quotemeta($hostid).':'.quotemeta($ip).':';
8076: my $sh;
8077: if ($sh=IO::File->new("$fname.subscription")) {
8078: while (my $subline=<$sh>) {
8079: if ($subline !~ /$expr/) {$contents.= $subline;} else {$found=1;}
8080: }
8081: $sh->close();
8082: }
8083: $sh=IO::File->new(">$fname.subscription");
8084: if ($contents) { print $sh $contents; }
8085: if ($newline) { print $sh $newline; }
8086: $sh->close();
8087: return $found;
8088: }
8089:
8090: sub get_chat {
8091: my ($cdom,$cname,$udom,$uname,$group)=@_;
8092:
8093: my @entries=();
8094: my $namespace = 'nohist_chatroom';
8095: my $namespace_inroom = 'nohist_inchatroom';
8096: if ($group ne '') {
8097: $namespace .= '_'.$group;
8098: $namespace_inroom .= '_'.$group;
8099: }
8100: my $hashref = &tie_user_hash($cdom, $cname, $namespace,
8101: &GDBM_READER());
8102: if ($hashref) {
8103: @entries=map { $_.':'.$hashref->{$_} } sort(keys(%$hashref));
8104: &untie_user_hash($hashref);
8105: }
8106: my @participants=();
8107: my $cutoff=time-60;
8108: $hashref = &tie_user_hash($cdom, $cname, $namespace_inroom,
8109: &GDBM_WRCREAT());
8110: if ($hashref) {
8111: $hashref->{$uname.':'.$udom}=time;
8112: foreach my $user (sort(keys(%$hashref))) {
8113: if ($hashref->{$user}>$cutoff) {
8114: push(@participants, 'active_participant:'.$user);
8115: }
8116: }
8117: &untie_user_hash($hashref);
8118: }
8119: return (@participants,@entries);
8120: }
8121:
8122: sub chat_add {
8123: my ($cdom,$cname,$newchat,$group)=@_;
8124: my @entries=();
8125: my $time=time;
8126: my $namespace = 'nohist_chatroom';
8127: my $logfile = 'chatroom.log';
8128: if ($group ne '') {
8129: $namespace .= '_'.$group;
8130: $logfile = 'chatroom_'.$group.'.log';
8131: }
8132: my $hashref = &tie_user_hash($cdom, $cname, $namespace,
8133: &GDBM_WRCREAT());
8134: if ($hashref) {
8135: @entries=map { $_.':'.$hashref->{$_} } sort(keys(%$hashref));
8136: my ($lastid)=($entries[$#entries]=~/^(\w+)\:/);
8137: my ($thentime,$idnum)=split(/\_/,$lastid);
8138: my $newid=$time.'_000000';
8139: if ($thentime==$time) {
8140: $idnum=~s/^0+//;
8141: $idnum++;
8142: $idnum=substr('000000'.$idnum,-6,6);
8143: $newid=$time.'_'.$idnum;
8144: }
8145: $hashref->{$newid}=$newchat;
8146: my $expired=$time-3600;
8147: foreach my $comment (keys(%$hashref)) {
8148: my ($thistime) = ($comment=~/(\d+)\_/);
8149: if ($thistime<$expired) {
8150: delete $hashref->{$comment};
8151: }
8152: }
8153: {
8154: my $proname=&propath($cdom,$cname);
8155: if (open(CHATLOG,">>$proname/$logfile")) {
8156: print CHATLOG ("$time:".&unescape($newchat)."\n");
8157: }
8158: close(CHATLOG);
8159: }
8160: &untie_user_hash($hashref);
8161: }
8162: }
8163:
8164: sub unsub {
8165: my ($fname,$clientip)=@_;
8166: my $result;
8167: my $unsubs = 0; # Number of successful unsubscribes:
8168:
8169:
8170: # An old way subscriptions were handled was to have a
8171: # subscription marker file:
8172:
8173: Debug("Attempting unlink of $fname.$clientname");
8174: if (unlink("$fname.$clientname")) {
8175: $unsubs++; # Successful unsub via marker file.
8176: }
8177:
8178: # The more modern way to do it is to have a subscription list
8179: # file:
8180:
8181: if (-e "$fname.subscription") {
8182: my $found=&addline($fname,$clientname,$clientip,'');
8183: if ($found) {
8184: $unsubs++;
8185: }
8186: }
8187:
8188: # If either or both of these mechanisms succeeded in unsubscribing a
8189: # resource we can return ok:
8190:
8191: if($unsubs) {
8192: $result = "ok\n";
8193: } else {
8194: $result = "not_subscribed\n";
8195: }
8196:
8197: return $result;
8198: }
8199:
8200: sub currentversion {
8201: my $fname=shift;
8202: my $version=-1;
8203: my $ulsdir='';
8204: if ($fname=~/^(.+)\/[^\/]+$/) {
8205: $ulsdir=$1;
8206: }
8207: my ($fnamere1,$fnamere2);
8208: # remove version if already specified
8209: $fname=~s/\.\d+\.(\w+(?:\.meta)*)$/\.$1/;
8210: # get the bits that go before and after the version number
8211: if ( $fname=~/^(.*\.)(\w+(?:\.meta)*)$/ ) {
8212: $fnamere1=$1;
8213: $fnamere2='.'.$2;
8214: }
8215: if (-e $fname) { $version=1; }
8216: if (-e $ulsdir) {
8217: if(-d $ulsdir) {
8218: if (opendir(LSDIR,$ulsdir)) {
8219: my $ulsfn;
8220: while ($ulsfn=readdir(LSDIR)) {
8221: # see if this is a regular file (ignore links produced earlier)
8222: my $thisfile=$ulsdir.'/'.$ulsfn;
8223: unless (-l $thisfile) {
8224: if ($thisfile=~/\Q$fnamere1\E(\d+)\Q$fnamere2\E$/) {
8225: if ($1>$version) { $version=$1; }
8226: }
8227: }
8228: }
8229: closedir(LSDIR);
8230: $version++;
8231: }
8232: }
8233: }
8234: return $version;
8235: }
8236:
8237: sub thisversion {
8238: my $fname=shift;
8239: my $version=-1;
8240: if ($fname=~/\.(\d+)\.\w+(?:\.meta)*$/) {
8241: $version=$1;
8242: }
8243: return $version;
8244: }
8245:
8246: sub subscribe {
8247: my ($userinput,$clientip)=@_;
8248: my $result;
8249: my ($cmd,$fname)=split(/:/,$userinput,2);
8250: my $ownership=&ishome($fname);
8251: if ($ownership eq 'owner') {
8252: # explitly asking for the current version?
8253: unless (-e $fname) {
8254: my $currentversion=¤tversion($fname);
8255: if (&thisversion($fname)==$currentversion) {
8256: if ($fname=~/^(.+)\.\d+\.(\w+(?:\.meta)*)$/) {
8257: my $root=$1;
8258: my $extension=$2;
8259: symlink($root.'.'.$extension,
8260: $root.'.'.$currentversion.'.'.$extension);
8261: unless ($extension=~/\.meta$/) {
8262: symlink($root.'.'.$extension.'.meta',
8263: $root.'.'.$currentversion.'.'.$extension.'.meta');
8264: }
8265: }
8266: }
8267: }
8268: if (-e $fname) {
8269: if (-d $fname) {
8270: $result="directory\n";
8271: } else {
8272: if (-e "$fname.$clientname") {&unsub($fname,$clientip);}
8273: my $now=time;
8274: my $found=&addline($fname,$clientname,$clientip,
8275: "$clientname:$clientip:$now\n");
8276: if ($found) { $result="$fname\n"; }
8277: # if they were subscribed to only meta data, delete that
8278: # subscription, when you subscribe to a file you also get
8279: # the metadata
8280: unless ($fname=~/\.meta$/) { &unsub("$fname.meta",$clientip); }
8281: $fname=~s/\/home\/httpd\/html\/res/raw/;
8282: my $protocol = $Apache::lonnet::protocol{$perlvar{'lonHostID'}};
8283: $protocol = 'http' if ($protocol ne 'https');
8284: $fname=$protocol.'://'.&Apache::lonnet::hostname($perlvar{'lonHostID'})."/".$fname;
8285: $result="$fname\n";
8286: }
8287: } else {
8288: $result="not_found\n";
8289: }
8290: } else {
8291: $result="rejected\n";
8292: }
8293: return $result;
8294: }
8295: # Change the passwd of a unix user. The caller must have
8296: # first verified that the user is a loncapa user.
8297: #
8298: # Parameters:
8299: # user - Unix user name to change.
8300: # pass - New password for the user.
8301: # Returns:
8302: # ok - if success
8303: # other - Some meaningfule error message string.
8304: # NOTE:
8305: # invokes a setuid script to change the passwd.
8306: sub change_unix_password {
8307: my ($user, $pass) = @_;
8308:
8309: &Debug("change_unix_password");
8310: my $execdir=$perlvar{'lonDaemons'};
8311: &Debug("Opening lcpasswd pipeline");
8312: my $pf = IO::File->new("|$execdir/lcpasswd > "
8313: ."$perlvar{'lonDaemons'}"
8314: ."/logs/lcpasswd.log");
8315: print $pf "$user\n$pass\n$pass\n";
8316: close $pf;
8317: my $err = $?;
8318: return ($err < @passwderrors) ? $passwderrors[$err] :
8319: "pwchange_falure - unknown error";
8320:
8321:
8322: }
8323:
8324:
8325: sub make_passwd_file {
8326: my ($uname,$udom,$umode,$npass,$passfilename,$action)=@_;
8327: my $result="ok";
8328: if ($umode eq 'krb4' or $umode eq 'krb5') {
8329: {
8330: my $pf = IO::File->new(">$passfilename");
8331: if ($pf) {
8332: print $pf "$umode:$npass\n";
8333: &update_passwd_history($uname,$udom,$umode,$action);
8334: } else {
8335: $result = "pass_file_failed_error";
8336: }
8337: }
8338: } elsif ($umode eq 'internal') {
8339: my $ncpass = &hash_passwd($udom,$npass);
8340: {
8341: &Debug("Creating internal auth");
8342: my $pf = IO::File->new(">$passfilename");
8343: if($pf) {
8344: print $pf "internal:$ncpass\n";
8345: &update_passwd_history($uname,$udom,$umode,$action);
8346: } else {
8347: $result = "pass_file_failed_error";
8348: }
8349: }
8350: } elsif ($umode eq 'localauth') {
8351: {
8352: my $pf = IO::File->new(">$passfilename");
8353: if($pf) {
8354: print $pf "localauth:$npass\n";
8355: &update_passwd_history($uname,$udom,$umode,$action);
8356: } else {
8357: $result = "pass_file_failed_error";
8358: }
8359: }
8360: } elsif ($umode eq 'unix') {
8361: &logthis(">>>Attempt to create unix account blocked -- unix auth not available for new users.");
8362: $result="no_new_unix_accounts";
8363: } elsif ($umode eq 'none') {
8364: {
8365: my $pf = IO::File->new("> $passfilename");
8366: if($pf) {
8367: print $pf "none:\n";
8368: } else {
8369: $result = "pass_file_failed_error";
8370: }
8371: }
8372: } else {
8373: $result="auth_mode_error";
8374: }
8375: return $result;
8376: }
8377:
8378: sub convert_photo {
8379: my ($start,$dest)=@_;
8380: system("convert $start $dest");
8381: }
8382:
8383: sub sethost {
8384: my ($remotereq) = @_;
8385: my (undef,$hostid)=split(/:/,$remotereq);
8386: # ignore sethost if we are already correct
8387: if ($hostid eq $currenthostid) {
8388: return 'ok';
8389: }
8390:
8391: if (!defined($hostid)) { $hostid=$perlvar{'lonHostID'}; }
8392: if (&Apache::lonnet::get_host_ip($perlvar{'lonHostID'})
8393: eq &Apache::lonnet::get_host_ip($hostid)) {
8394: $currenthostid =$hostid;
8395: $currentdomainid=&Apache::lonnet::host_domain($hostid);
8396: # &logthis("Setting hostid to $hostid, and domain to $currentdomainid");
8397: } else {
8398: &logthis("Requested host id $hostid not an alias of ".
8399: $perlvar{'lonHostID'}." refusing connection");
8400: return 'unable_to_set';
8401: }
8402: return 'ok';
8403: }
8404:
8405: sub version {
8406: my ($userinput)=@_;
8407: $remoteVERSION=(split(/:/,$userinput))[1];
8408: return "version:$VERSION";
8409: }
8410:
8411: sub get_usersession_config {
8412: my ($dom,$name) = @_;
8413: my ($usersessionconf,$cached)=&Apache::lonnet::is_cached_new($name,$dom);
8414: if (defined($cached)) {
8415: return $usersessionconf;
8416: } else {
8417: my %domconfig = &Apache::lonnet::get_dom('configuration',['usersessions'],$dom);
8418: &Apache::lonnet::do_cache_new($name,$dom,$domconfig{'usersessions'},3600);
8419: return $domconfig{'usersessions'};
8420: }
8421: return;
8422: }
8423:
8424: sub get_usersearch_config {
8425: my ($dom,$name) = @_;
8426: my ($usersearchconf,$cached)=&Apache::lonnet::is_cached_new($name,$dom);
8427: if (defined($cached)) {
8428: return $usersearchconf;
8429: } else {
8430: my %domconfig = &Apache::lonnet::get_dom('configuration',['directorysrch'],$dom);
8431: &Apache::lonnet::do_cache_new($name,$dom,$domconfig{'directorysrch'},600);
8432: return $domconfig{'directorysrch'};
8433: }
8434: return;
8435: }
8436:
8437: sub get_prohibited {
8438: my ($dom) = @_;
8439: my $name = 'trust';
8440: my ($trustconfig,$cached)=&Apache::lonnet::is_cached_new($name,$dom);
8441: unless (defined($cached)) {
8442: my %domconfig = &Apache::lonnet::get_dom('configuration',['trust'],$dom);
8443: &Apache::lonnet::do_cache_new($name,$dom,$domconfig{'trust'},3600);
8444: $trustconfig = $domconfig{'trust'};
8445: }
8446: my %prohibited;
8447: if (ref($trustconfig)) {
8448: foreach my $prefix (keys(%{$trustconfig})) {
8449: if (ref($trustconfig->{$prefix}) eq 'HASH') {
8450: my $reject;
8451: if (ref($trustconfig->{$prefix}->{'exc'}) eq 'ARRAY') {
8452: if (grep(/^\Q$clientintdom\E$/,@{$trustconfig->{$prefix}->{'exc'}})) {
8453: $reject = 1;
8454: }
8455: }
8456: if (ref($trustconfig->{$prefix}->{'inc'}) eq 'ARRAY') {
8457: if (grep(/^\Q$clientintdom\E$/,@{$trustconfig->{$prefix}->{'inc'}})) {
8458: $reject = 0;
8459: } else {
8460: $reject = 1;
8461: }
8462: }
8463: if ($reject) {
8464: $prohibited{$prefix} = 1;
8465: }
8466: }
8467: }
8468: }
8469: return %prohibited;
8470: }
8471:
8472: sub distro_and_arch {
8473: return $dist.':'.$arch;
8474: }
8475:
8476: # ----------------------------------- POD (plain old documentation, CPAN style)
8477:
8478: =head1 NAME
8479:
8480: lond - "LON Daemon" Server (port "LOND" 5663)
8481:
8482: =head1 SYNOPSIS
8483:
8484: Usage: B<lond>
8485:
8486: Should only be run as user=www. This is a command-line script which
8487: is invoked by B<loncron>. There is no expectation that a typical user
8488: will manually start B<lond> from the command-line. (In other words,
8489: DO NOT START B<lond> YOURSELF.)
8490:
8491: =head1 DESCRIPTION
8492:
8493: There are two characteristics associated with the running of B<lond>,
8494: PROCESS MANAGEMENT (starting, stopping, handling child processes)
8495: and SERVER-SIDE ACTIVITIES (password authentication, user creation,
8496: subscriptions, etc). These are described in two large
8497: sections below.
8498:
8499: B<PROCESS MANAGEMENT>
8500:
8501: Preforker - server who forks first. Runs as a daemon. HUPs.
8502: Uses IDEA encryption
8503:
8504: B<lond> forks off children processes that correspond to the other servers
8505: in the network. Management of these processes can be done at the
8506: parent process level or the child process level.
8507:
8508: B<logs/lond.log> is the location of log messages.
8509:
8510: The process management is now explained in terms of linux shell commands,
8511: subroutines internal to this code, and signal assignments:
8512:
8513: =over 4
8514:
8515: =item *
8516:
8517: PID is stored in B<logs/lond.pid>
8518:
8519: This is the process id number of the parent B<lond> process.
8520:
8521: =item *
8522:
8523: SIGTERM and SIGINT
8524:
8525: Parent signal assignment:
8526: $SIG{INT} = $SIG{TERM} = \&HUNTSMAN;
8527:
8528: Child signal assignment:
8529: $SIG{INT} = 'DEFAULT'; (and SIGTERM is DEFAULT also)
8530: (The child dies and a SIGALRM is sent to parent, awaking parent from slumber
8531: to restart a new child.)
8532:
8533: Command-line invocations:
8534: B<kill> B<-s> SIGTERM I<PID>
8535: B<kill> B<-s> SIGINT I<PID>
8536:
8537: Subroutine B<HUNTSMAN>:
8538: This is only invoked for the B<lond> parent I<PID>.
8539: This kills all the children, and then the parent.
8540: The B<lonc.pid> file is cleared.
8541:
8542: =item *
8543:
8544: SIGHUP
8545:
8546: Current bug:
8547: This signal can only be processed the first time
8548: on the parent process. Subsequent SIGHUP signals
8549: have no effect.
8550:
8551: Parent signal assignment:
8552: $SIG{HUP} = \&HUPSMAN;
8553:
8554: Child signal assignment:
8555: none (nothing happens)
8556:
8557: Command-line invocations:
8558: B<kill> B<-s> SIGHUP I<PID>
8559:
8560: Subroutine B<HUPSMAN>:
8561: This is only invoked for the B<lond> parent I<PID>,
8562: This kills all the children, and then the parent.
8563: The B<lond.pid> file is cleared.
8564:
8565: =item *
8566:
8567: SIGUSR1
8568:
8569: Parent signal assignment:
8570: $SIG{USR1} = \&USRMAN;
8571:
8572: Child signal assignment:
8573: $SIG{USR1}= \&logstatus;
8574:
8575: Command-line invocations:
8576: B<kill> B<-s> SIGUSR1 I<PID>
8577:
8578: Subroutine B<USRMAN>:
8579: When invoked for the B<lond> parent I<PID>,
8580: SIGUSR1 is sent to all the children, and the status of
8581: each connection is logged.
8582:
8583: =item *
8584:
8585: SIGUSR2
8586:
8587: Parent Signal assignment:
8588: $SIG{USR2} = \&UpdateHosts
8589:
8590: Child signal assignment:
8591: NONE
8592:
8593:
8594: =item *
8595:
8596: SIGCHLD
8597:
8598: Parent signal assignment:
8599: $SIG{CHLD} = \&REAPER;
8600:
8601: Child signal assignment:
8602: none
8603:
8604: Command-line invocations:
8605: B<kill> B<-s> SIGCHLD I<PID>
8606:
8607: Subroutine B<REAPER>:
8608: This is only invoked for the B<lond> parent I<PID>.
8609: Information pertaining to the child is removed.
8610: The socket port is cleaned up.
8611:
8612: =back
8613:
8614: B<SERVER-SIDE ACTIVITIES>
8615:
8616: Server-side information can be accepted in an encrypted or non-encrypted
8617: method.
8618:
8619: =over 4
8620:
8621: =item ping
8622:
8623: Query a client in the hosts.tab table; "Are you there?"
8624:
8625: =item pong
8626:
8627: Respond to a ping query.
8628:
8629: =item ekey
8630:
8631: Read in encrypted key, make cipher. Respond with a buildkey.
8632:
8633: =item load
8634:
8635: Respond with CPU load based on a computation upon /proc/loadavg.
8636:
8637: =item currentauth
8638:
8639: Reply with current authentication information (only over an
8640: encrypted channel).
8641:
8642: =item auth
8643:
8644: Only over an encrypted channel, reply as to whether a user's
8645: authentication information can be validated.
8646:
8647: =item passwd
8648:
8649: Allow for a password to be set.
8650:
8651: =item makeuser
8652:
8653: Make a user.
8654:
8655: =item changeuserauth
8656:
8657: Allow for authentication mechanism and password to be changed.
8658:
8659: =item home
8660:
8661: Respond to a question "are you the home for a given user?"
8662:
8663: =item update
8664:
8665: Update contents of a subscribed resource.
8666:
8667: =item unsubscribe
8668:
8669: The server is unsubscribing from a resource.
8670:
8671: =item subscribe
8672:
8673: The server is subscribing to a resource.
8674:
8675: =item log
8676:
8677: Place in B<logs/lond.log>
8678:
8679: =item put
8680:
8681: stores hash in namespace
8682:
8683: =item rolesput
8684:
8685: put a role into a user's environment
8686:
8687: =item get
8688:
8689: returns hash with keys from array
8690: reference filled in from namespace
8691:
8692: =item eget
8693:
8694: returns hash with keys from array
8695: reference filled in from namesp (encrypts the return communication)
8696:
8697: =item rolesget
8698:
8699: get a role from a user's environment
8700:
8701: =item del
8702:
8703: deletes keys out of array from namespace
8704:
8705: =item keys
8706:
8707: returns namespace keys
8708:
8709: =item dump
8710:
8711: dumps the complete (or key matching regexp) namespace into a hash
8712:
8713: =item store
8714:
8715: stores hash permanently
8716: for this url; hashref needs to be given and should be a \%hashname; the
8717: remaining args aren't required and if they aren't passed or are '' they will
8718: be derived from the ENV
8719:
8720: =item restore
8721:
8722: returns a hash for a given url
8723:
8724: =item querysend
8725:
8726: Tells client about the lonsql process that has been launched in response
8727: to a sent query.
8728:
8729: =item queryreply
8730:
8731: Accept information from lonsql and make appropriate storage in temporary
8732: file space.
8733:
8734: =item idput
8735:
8736: Defines usernames as corresponding to IDs. (These "IDs" are unique identifiers
8737: for each student, defined perhaps by the institutional Registrar.)
8738:
8739: =item idget
8740:
8741: Returns usernames corresponding to IDs. (These "IDs" are unique identifiers
8742: for each student, defined perhaps by the institutional Registrar.)
8743:
8744: =item iddel
8745:
8746: Deletes one or more ids in a domain's id database.
8747:
8748: =item tmpput
8749:
8750: Accept and store information in temporary space.
8751:
8752: =item tmpget
8753:
8754: Send along temporarily stored information.
8755:
8756: =item ls
8757:
8758: List part of a user's directory.
8759:
8760: =item pushtable
8761:
8762: Pushes a file in /home/httpd/lonTab directory. Currently limited to:
8763: hosts.tab and domain.tab. The old file is copied to *.tab.backup but
8764: must be restored manually in case of a problem with the new table file.
8765: pushtable requires that the request be encrypted and validated via
8766: ValidateManager. The form of the command is:
8767: enc:pushtable tablename <tablecontents> \n
8768: where pushtable, tablename and <tablecontents> will be encrypted, but \n is a
8769: cleartext newline.
8770:
8771: =item Hanging up (exit or init)
8772:
8773: What to do when a client tells the server that they (the client)
8774: are leaving the network.
8775:
8776: =item unknown command
8777:
8778: If B<lond> is sent an unknown command (not in the list above),
8779: it replys to the client "unknown_cmd".
8780:
8781:
8782: =item UNKNOWN CLIENT
8783:
8784: If the anti-spoofing algorithm cannot verify the client,
8785: the client is rejected (with a "refused" message sent
8786: to the client, and the connection is closed.
8787:
8788: =back
8789:
8790: =head1 PREREQUISITES
8791:
8792: IO::Socket
8793: IO::File
8794: Apache::File
8795: POSIX
8796: Crypt::IDEA
8797: GDBM_File
8798: Authen::Krb4
8799: Authen::Krb5
8800:
8801: =head1 COREQUISITES
8802:
8803: none
8804:
8805: =head1 OSNAMES
8806:
8807: linux
8808:
8809: =head1 SCRIPT CATEGORIES
8810:
8811: Server/Process
8812:
8813: =cut
8814:
8815:
8816: =pod
8817:
8818: =head1 LOG MESSAGES
8819:
8820: The messages below can be emitted in the lond log. This log is located
8821: in ~httpd/perl/logs/lond.log Many log messages have HTML encapsulation
8822: to provide coloring if examined from inside a web page. Some do not.
8823: Where color is used, the colors are; Red for sometihhng to get excited
8824: about and to follow up on. Yellow for something to keep an eye on to
8825: be sure it does not get worse, Green,and Blue for informational items.
8826:
8827: In the discussions below, sometimes reference is made to ~httpd
8828: when describing file locations. There isn't really an httpd
8829: user, however there is an httpd directory that gets installed in the
8830: place that user home directories go. On linux, this is usually
8831: (always?) /home/httpd.
8832:
8833:
8834: Some messages are colorless. These are usually (not always)
8835: Green/Blue color level messages.
8836:
8837: =over 2
8838:
8839: =item (Red) LocalConnection rejecting non local: <ip> ne 127.0.0.1
8840:
8841: A local connection negotiation was attempted by
8842: a host whose IP address was not 127.0.0.1.
8843: The socket is closed and the child will exit.
8844: lond has three ways to establish an encyrption
8845: key with a client:
8846:
8847: =over 2
8848:
8849: =item local
8850:
8851: The key is written and read from a file.
8852: This is only valid for connections from localhost.
8853:
8854: =item insecure
8855:
8856: The key is generated by the server and
8857: transmitted to the client.
8858:
8859: =item ssl (secure)
8860:
8861: An ssl connection is negotiated with the client,
8862: the key is generated by the server and sent to the
8863: client across this ssl connection before the
8864: ssl connectionis terminated and clear text
8865: transmission resumes.
8866:
8867: =back
8868:
8869: =item (Red) LocalConnection: caller is insane! init = <init> and type = <type>
8870:
8871: The client is local but has not sent an initialization
8872: string that is the literal "init:local" The connection
8873: is closed and the child exits.
8874:
8875: =item Red CRITICAL Can't get key file <error>
8876:
8877: SSL key negotiation is being attempted but the call to
8878: lonssl::KeyFile failed. This usually means that the
8879: configuration file is not correctly defining or protecting
8880: the directories/files lonCertificateDirectory or
8881: lonnetPrivateKey
8882: <error> is a string that describes the reason that
8883: the key file could not be located.
8884:
8885: =item (Red) CRITICAL Can't get certificates <error>
8886:
8887: SSL key negotiation failed because we were not able to retrives our certificate
8888: or the CA's certificate in the call to lonssl::CertificateFile
8889: <error> is the textual reason this failed. Usual reasons:
8890:
8891: =over 2
8892:
8893: =item Apache config file for loncapa incorrect:
8894:
8895: one of the variables
8896: lonCertificateDirectory, lonnetCertificateAuthority, or lonnetCertificate
8897: undefined or incorrect
8898:
8899: =item Permission error:
8900:
8901: The directory pointed to by lonCertificateDirectory is not readable by lond
8902:
8903: =item Permission error:
8904:
8905: Files in the directory pointed to by lonCertificateDirectory are not readable by lond.
8906:
8907: =item Installation error:
8908:
8909: Either the certificate authority file or the certificate have not
8910: been installed in lonCertificateDirectory.
8911:
8912: =item (Red) CRITICAL SSL Socket promotion failed: <err>
8913:
8914: The promotion of the connection from plaintext to SSL failed
8915: <err> is the reason for the failure. There are two
8916: system calls involved in the promotion (one of which failed),
8917: a dup to produce
8918: a second fd on the raw socket over which the encrypted data
8919: will flow and IO::SOcket::SSL->new_from_fd which creates
8920: the SSL connection on the duped fd.
8921:
8922: =item (Blue) WARNING client did not respond to challenge
8923:
8924: This occurs on an insecure (non SSL) connection negotiation request.
8925: lond generates some number from the time, the PID and sends it to
8926: the client. The client must respond by echoing this information back.
8927: If the client does not do so, that's a violation of the challenge
8928: protocols and the connection will be failed.
8929:
8930: =item (Red) No manager table. Nobody can manage!!
8931:
8932: lond has the concept of privileged hosts that
8933: can perform remote management function such
8934: as update the hosts.tab. The manager hosts
8935: are described in the
8936: ~httpd/lonTabs/managers.tab file.
8937: this message is logged if this file is missing.
8938:
8939:
8940: =item (Green) Registering manager <dnsname> as <cluster_name> with <ipaddress>
8941:
8942: Reports the successful parse and registration
8943: of a specific manager.
8944:
8945: =item Green existing host <clustername:dnsname>
8946:
8947: The manager host is already defined in the hosts.tab
8948: the information in that table, rather than the info in the
8949: manager table will be used to determine the manager's ip.
8950:
8951: =item (Red) Unable to craete <filename>
8952:
8953: lond has been asked to create new versions of an administrative
8954: file (by a manager). When this is done, the new file is created
8955: in a temp file and then renamed into place so that there are always
8956: usable administrative files, even if the update fails. This failure
8957: message means that the temp file could not be created.
8958: The update is abandoned, and the old file is available for use.
8959:
8960: =item (Green) CopyFile from <oldname> to <newname> failed
8961:
8962: In an update of administrative files, the copy of the existing file to a
8963: backup file failed. The installation of the new file may still succeed,
8964: but there will not be a back up file to rever to (this should probably
8965: be yellow).
8966:
8967: =item (Green) Pushfile: backed up <oldname> to <newname>
8968:
8969: See above, the backup of the old administrative file succeeded.
8970:
8971: =item (Red) Pushfile: Unable to install <filename> <reason>
8972:
8973: The new administrative file could not be installed. In this case,
8974: the old administrative file is still in use.
8975:
8976: =item (Green) Installed new < filename>.
8977:
8978: The new administrative file was successfullly installed.
8979:
8980: =item (Red) Reinitializing lond pid=<pid>
8981:
8982: The lonc child process <pid> will be sent a USR2
8983: signal.
8984:
8985: =item (Red) Reinitializing self
8986:
8987: We've been asked to re-read our administrative files,and
8988: are doing so.
8989:
8990: =item (Yellow) error:Invalid process identifier <ident>
8991:
8992: A reinit command was received, but the target part of the
8993: command was not valid. It must be either
8994: 'lond' or 'lonc' but was <ident>
8995:
8996: =item (Green) isValideditCommand checking: Command = <command> Key = <key> newline = <newline>
8997:
8998: Checking to see if lond has been handed a valid edit
8999: command. It is possible the edit command is not valid
9000: in that case there are no log messages to indicate that.
9001:
9002: =item Result of password change for <username> pwchange_success
9003:
9004: The password for <username> was
9005: successfully changed.
9006:
9007: =item Unable to open <user> passwd to change password
9008:
9009: Could not rewrite the
9010: internal password file for a user
9011:
9012: =item Result of password change for <user> : <result>
9013:
9014: A unix password change for <user> was attempted
9015: and the pipe returned <result>
9016:
9017: =item LWP GET: <message> for <fname> (<remoteurl>)
9018:
9019: The lightweight process fetch for a resource failed
9020: with <message> the local filename that should
9021: have existed/been created was <fname> the
9022: corresponding URI: <remoteurl> This is emitted in several
9023: places.
9024:
9025: =item Unable to move <transname> to <destname>
9026:
9027: From fetch_user_file_handler - the user file was replicated but could not
9028: be mv'd to its final location.
9029:
9030: =item Looking for <domain> <username>
9031:
9032: From user_has_session_handler - This should be a Debug call instead
9033: it indicates lond is about to check whether the specified user has a
9034: session active on the specified domain on the local host.
9035:
9036: =item Client <ip> (<name>) hanging up: <input>
9037:
9038: lond has been asked to exit by its client. The <ip> and <name> identify the
9039: client systemand <input> is the full exit command sent to the server.
9040:
9041: =item Red CRITICAL: ABNORMAL EXIT. child <pid> for server <hostname> died through a crass with this error->[<message>].
9042:
9043: A lond child terminated. NOte that this termination can also occur when the
9044: child receives the QUIT or DIE signals. <pid> is the process id of the child,
9045: <hostname> the host lond is working for, and <message> the reason the child died
9046: to the best of our ability to get it (I would guess that any numeric value
9047: represents and errno value). This is immediately followed by
9048:
9049: =item Famous last words: Catching exception - <log>
9050:
9051: Where log is some recent information about the state of the child.
9052:
9053: =item Red CRITICAL: TIME OUT <pid>
9054:
9055: Some timeout occured for server <pid>. THis is normally a timeout on an LWP
9056: doing an HTTP::GET.
9057:
9058: =item child <pid> died
9059:
9060: The reaper caught a SIGCHILD for the lond child process <pid>
9061: This should be modified to also display the IP of the dying child
9062: $children{$pid}
9063:
9064: =item Unknown child 0 died
9065: A child died but the wait for it returned a pid of zero which really should not
9066: ever happen.
9067:
9068: =item Child <which> - <pid> looks like we missed it's death
9069:
9070: When a sigchild is received, the reaper process checks all children to see if they are
9071: alive. If children are dying quite quickly, the lack of signal queuing can mean
9072: that a signal hearalds the death of more than one child. If so this message indicates
9073: which other one died. <which> is the ip of a dead child
9074:
9075: =item Free socket: <shutdownretval>
9076:
9077: The HUNTSMAN sub was called due to a SIGINT in a child process. The socket is being shutdown.
9078: for whatever reason, <shutdownretval> is printed but in fact shutdown() is not documented
9079: to return anything. This is followed by:
9080:
9081: =item Red CRITICAL: Shutting down
9082:
9083: Just prior to exit.
9084:
9085: =item Free socket: <shutdownretval>
9086:
9087: The HUPSMAN sub was called due to a SIGHUP. all children get killsed, and lond execs itself.
9088: This is followed by:
9089:
9090: =item (Red) CRITICAL: Restarting
9091:
9092: lond is about to exec itself to restart.
9093:
9094: =item (Blue) Updating connections
9095:
9096: (In response to a USR2). All the children (except the one for localhost)
9097: are about to be killed, the hosts tab reread, and Apache reloaded via apachereload.
9098:
9099: =item (Blue) UpdateHosts killing child <pid> for ip <ip>
9100:
9101: Due to USR2 as above.
9102:
9103: =item (Green) keeping child for ip <ip> (pid = <pid>)
9104:
9105: In response to USR2 as above, the child indicated is not being restarted because
9106: it's assumed that we'll always need a child for the localhost.
9107:
9108:
9109: =item Going to check on the children
9110:
9111: Parent is about to check on the health of the child processes.
9112: Note that this is in response to a USR1 sent to the parent lond.
9113: there may be one or more of the next two messages:
9114:
9115: =item <pid> is dead
9116:
9117: A child that we have in our child hash as alive has evidently died.
9118:
9119: =item Child <pid> did not respond
9120:
9121: In the health check the child <pid> did not update/produce a pid_.txt
9122: file when sent it's USR1 signal. That process is killed with a 9 signal, as it's
9123: assumed to be hung in some un-fixable way.
9124:
9125: =item Finished checking children
9126:
9127: Master processs's USR1 processing is cojmplete.
9128:
9129: =item (Red) CRITICAL: ------- Starting ------
9130:
9131: (There are more '-'s on either side). Lond has forked itself off to
9132: form a new session and is about to start actual initialization.
9133:
9134: =item (Green) Attempting to start child (<client>)
9135:
9136: Started a new child process for <client>. Client is IO::Socket object
9137: connected to the child. This was as a result of a TCP/IP connection from a client.
9138:
9139: =item Unable to determine who caller was, getpeername returned nothing
9140:
9141: In child process initialization. either getpeername returned undef or
9142: a zero sized object was returned. Processing continues, but in my opinion,
9143: this should be cause for the child to exit.
9144:
9145: =item Unable to determine clientip
9146:
9147: In child process initialization. The peer address from getpeername was not defined.
9148: The client address is stored as "Unavailable" and processing continues.
9149:
9150: =item (Yellow) INFO: Connection <ip> <name> connection type = <type>
9151:
9152: In child initialization. A good connectionw as received from <ip>.
9153:
9154: =over 2
9155:
9156: =item <name>
9157:
9158: is the name of the client from hosts.tab.
9159:
9160: =item <type>
9161:
9162: Is the connection type which is either
9163:
9164: =over 2
9165:
9166: =item manager
9167:
9168: The connection is from a manager node, not in hosts.tab
9169:
9170: =item client
9171:
9172: the connection is from a non-manager in the hosts.tab
9173:
9174: =item both
9175:
9176: The connection is from a manager in the hosts.tab.
9177:
9178: =back
9179:
9180: =back
9181:
9182: =item (Blue) Certificates not installed -- trying insecure auth
9183:
9184: One of the certificate file, key file or
9185: certificate authority file could not be found for a client attempting
9186: SSL connection intiation. COnnection will be attemptied in in-secure mode.
9187: (this would be a system with an up to date lond that has not gotten a
9188: certificate from us).
9189:
9190: =item (Green) Successful local authentication
9191:
9192: A local connection successfully negotiated the encryption key.
9193: In this case the IDEA key is in a file (that is hopefully well protected).
9194:
9195: =item (Green) Successful ssl authentication with <client>
9196:
9197: The client (<client> is the peer's name in hosts.tab), has successfully
9198: negotiated an SSL connection with this child process.
9199:
9200: =item (Green) Successful insecure authentication with <client>
9201:
9202:
9203: The client has successfully negotiated an insecure connection withthe child process.
9204:
9205: =item (Yellow) Attempted insecure connection disallowed
9206:
9207: The client attempted and failed to successfully negotiate a successful insecure
9208: connection. This can happen either because the variable londAllowInsecure is false
9209: or undefined, or becuse the child did not successfully echo back the challenge
9210: string.
9211:
9212:
9213: =back
9214:
9215: =back
9216:
9217:
9218: =cut
FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>
![[BACK]](/icons/back.gif){kind=icon}
Return to lond CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [LON-CAPA] / loncom