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Mon Oct 29 02:57:30 2018 UTC (5 years, 6 months ago) by
raeburn
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- Replace use of mailto (metamail package) with mail command.
metamail was in Red Hat 7.3, but is absent from Fedora, CentOS, RHEL etc.
1: #!/usr/bin/perl
2: # The LearningOnline Network
3: # lond "LON Daemon" Server (port "LOND" 5663)
4: #
5: # $Id: lond,v 1.550 2018/10/29 02:57:30 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: 1.550 $'; #' 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 %crlchecked; # Will contain clients for which the client's SSL
112: # has been checked against the cluster's Certificate
113: # Revocation List.
114:
115: my $dist;
116:
117: #
118: # The hash below is used for command dispatching, and is therefore keyed on the request keyword.
119: # Each element of the hash contains a reference to an array that contains:
120: # A reference to a sub that executes the request corresponding to the keyword.
121: # A flag that is true if the request must be encoded to be acceptable.
122: # A mask with bits as follows:
123: # CLIENT_OK - Set when the function is allowed by ordinary clients
124: # MANAGER_OK - Set when the function is allowed to manager clients.
125: #
126: my $CLIENT_OK = 1;
127: my $MANAGER_OK = 2;
128: my %Dispatcher;
129:
130:
131: #
132: # The array below are password error strings."
133: #
134: my $lastpwderror = 13; # Largest error number from lcpasswd.
135: my @passwderrors = ("ok",
136: "pwchange_failure - lcpasswd must be run as user 'www'",
137: "pwchange_failure - lcpasswd got incorrect number of arguments",
138: "pwchange_failure - lcpasswd did not get the right nubmer of input text lines",
139: "pwchange_failure - lcpasswd too many simultaneous pwd changes in progress",
140: "pwchange_failure - lcpasswd User does not exist.",
141: "pwchange_failure - lcpasswd Incorrect current passwd",
142: "pwchange_failure - lcpasswd Unable to su to root.",
143: "pwchange_failure - lcpasswd Cannot set new passwd.",
144: "pwchange_failure - lcpasswd Username has invalid characters",
145: "pwchange_failure - lcpasswd Invalid characters in password",
146: "pwchange_failure - lcpasswd User already exists",
147: "pwchange_failure - lcpasswd Something went wrong with user addition.",
148: "pwchange_failure - lcpasswd Password mismatch",
149: "pwchange_failure - lcpasswd Error filename is invalid");
150:
151:
152: # This array are the errors from lcinstallfile:
153:
154: my @installerrors = ("ok",
155: "Initial user id of client not that of www",
156: "Usage error, not enough command line arguments",
157: "Source filename does not exist",
158: "Destination filename does not exist",
159: "Some file operation failed",
160: "Invalid table filename."
161: );
162:
163: #
164: # The %trust hash classifies commands according to type of trust
165: # required for execution of the command.
166: #
167: # When clients from a different institution request execution of a
168: # particular command, the trust settings for that institution set
169: # for this domain (or default domain for a multi-domain server) will
170: # be checked to see if running the command is allowed.
171: #
172: # Trust types which depend on the "Trust" domain configuration
173: # for the machine's default domain are:
174: #
175: # content ("Access to this domain's content by others")
176: # shared ("Access to other domain's content by this domain")
177: # enroll ("Enrollment in this domain's courses by others")
178: # coaurem ("Co-author roles for this domain's users elsewhere")
179: # domroles ("Domain roles in this domain assignable to others")
180: # catalog ("Course Catalog for this domain displayed elsewhere")
181: # reqcrs ("Requests for creation of courses in this domain by others")
182: # msg ("Users in other domains can send messages to this domain")
183: #
184: # Trust type which depends on the User Session Hosting (remote)
185: # domain configuration for machine's default domain is: "remote".
186: #
187: # Trust types which depend on contents of manager.tab in
188: # /home/httpd/lonTabs is: "manageronly".
189: #
190: # Trust type which requires client to share the same LON-CAPA
191: # "internet domain" (i.e., same institution as this server) is:
192: # "institutiononly".
193: #
194:
195: my %trust = (
196: auth => {remote => 1},
197: autocreatepassword => {remote => 1},
198: autocrsreqchecks => {remote => 1, reqcrs => 1},
199: autocrsrequpdate => {remote => 1},
200: autocrsreqvalidation => {remote => 1},
201: autogetsections => {remote => 1},
202: autoinstcodedefaults => {remote => 1, catalog => 1},
203: autoinstcodeformat => {remote => 1, catalog => 1},
204: autonewcourse => {remote => 1, reqcrs => 1},
205: autophotocheck => {remote => 1, enroll => 1},
206: autophotochoice => {remote => 1},
207: autophotopermission => {remote => 1, enroll => 1},
208: autopossibleinstcodes => {remote => 1, reqcrs => 1},
209: autoretrieve => {remote => 1, enroll => 1, catalog => 1},
210: autorun => {remote => 1, enroll => 1, reqcrs => 1},
211: autovalidateclass_sec => {catalog => 1},
212: autovalidatecourse => {remote => 1, enroll => 1},
213: autovalidateinstcode => {domroles => 1, remote => 1, enroll => 1},
214: changeuserauth => {remote => 1, domroles => 1},
215: chatretr => {remote => 1, enroll => 1},
216: chatsend => {remote => 1, enroll => 1},
217: courseiddump => {remote => 1, domroles => 1, enroll => 1},
218: courseidput => {remote => 1, domroles => 1, enroll => 1},
219: courseidputhash => {remote => 1, domroles => 1, enroll => 1},
220: courselastaccess => {remote => 1, domroles => 1, enroll => 1},
221: currentauth => {remote => 1, domroles => 1, enroll => 1},
222: currentdump => {remote => 1, enroll => 1},
223: currentversion => {remote=> 1, content => 1},
224: dcmaildump => {remote => 1, domroles => 1},
225: dcmailput => {remote => 1, domroles => 1},
226: del => {remote => 1, domroles => 1, enroll => 1, content => 1},
227: deldom => {remote => 1, domroles => 1}, # not currently used
228: devalidatecache => {institutiononly => 1},
229: domroleput => {remote => 1, enroll => 1},
230: domrolesdump => {remote => 1, catalog => 1},
231: du => {remote => 1, enroll => 1},
232: du2 => {remote => 1, enroll => 1},
233: dump => {remote => 1, enroll => 1, domroles => 1},
234: edit => {institutiononly => 1}, #not used currently
235: eget => {remote => 1, domroles => 1, enroll => 1}, #not used currently
236: egetdom => {remote => 1, domroles => 1, enroll => 1, },
237: ekey => {}, #not used currently
238: exit => {anywhere => 1},
239: fetchuserfile => {remote => 1, enroll => 1},
240: get => {remote => 1, domroles => 1, enroll => 1},
241: getdom => {anywhere => 1},
242: home => {anywhere => 1},
243: iddel => {remote => 1, enroll => 1},
244: idget => {remote => 1, enroll => 1},
245: idput => {remote => 1, domroles => 1, enroll => 1},
246: inc => {remote => 1, enroll => 1},
247: init => {anywhere => 1},
248: inst_usertypes => {remote => 1, domroles => 1, enroll => 1},
249: instemailrules => {remote => 1, domroles => 1},
250: instidrulecheck => {remote => 1, domroles => 1,},
251: instidrules => {remote => 1, domroles => 1,},
252: instrulecheck => {remote => 1, enroll => 1, reqcrs => 1, domroles => 1},
253: instselfcreatecheck => {institutiononly => 1},
254: instuserrules => {remote => 1, enroll => 1, reqcrs => 1, domroles => 1},
255: keys => {remote => 1,},
256: load => {anywhere => 1},
257: log => {anywhere => 1},
258: ls => {remote => 1, enroll => 1, content => 1,},
259: ls2 => {remote => 1, enroll => 1, content => 1,},
260: ls3 => {remote => 1, enroll => 1, content => 1,},
261: makeuser => {remote => 1, enroll => 1, domroles => 1,},
262: mkdiruserfile => {remote => 1, enroll => 1,},
263: newput => {remote => 1, enroll => 1, reqcrs => 1, domroles => 1,},
264: passwd => {remote => 1},
265: ping => {anywhere => 1},
266: pong => {anywhere => 1},
267: pushfile => {manageronly => 1},
268: put => {remote => 1, enroll => 1, domroles => 1, msg => 1, content => 1, shared => 1},
269: putdom => {remote => 1, domroles => 1,},
270: putstore => {remote => 1, enroll => 1},
271: queryreply => {anywhere => 1},
272: querysend => {anywhere => 1},
273: querysend_activitylog => {remote => 1},
274: querysend_allusers => {remote => 1, domroles => 1},
275: querysend_courselog => {remote => 1},
276: querysend_fetchenrollment => {remote => 1},
277: querysend_getinstuser => {remote => 1},
278: querysend_getmultinstusers => {remote => 1},
279: querysend_instdirsearch => {remote => 1, domroles => 1, coaurem => 1},
280: querysend_institutionalphotos => {remote => 1},
281: querysend_portfolio_metadata => {remote => 1, content => 1},
282: querysend_userlog => {remote => 1, domroles => 1},
283: querysend_usersearch => {remote => 1, enroll => 1, coaurem => 1},
284: quit => {anywhere => 1},
285: readlonnetglobal => {institutiononly => 1},
286: reinit => {manageronly => 1}, #not used currently
287: removeuserfile => {remote => 1, enroll => 1},
288: renameuserfile => {remote => 1,},
289: restore => {remote => 1, enroll => 1, reqcrs => 1,},
290: rolesdel => {remote => 1, enroll => 1, domroles => 1, coaurem => 1},
291: rolesput => {remote => 1, enroll => 1, domroles => 1, coaurem => 1},
292: servercerts => {institutiononly => 1},
293: serverdistarch => {anywhere => 1},
294: serverhomeID => {anywhere => 1},
295: serverloncaparev => {anywhere => 1},
296: servertimezone => {remote => 1, enroll => 1},
297: setannounce => {remote => 1, domroles => 1},
298: sethost => {anywhere => 1},
299: store => {remote => 1, enroll => 1, reqcrs => 1,},
300: studentphoto => {remote => 1, enroll => 1},
301: sub => {content => 1,},
302: tmpdel => {anywhere => 1},
303: tmpget => {anywhere => 1},
304: tmpput => {anywhere => 1},
305: tokenauthuserfile => {anywhere => 1},
306: unsub => {content => 1,},
307: update => {shared => 1},
308: updateclickers => {remote => 1},
309: userhassession => {anywhere => 1},
310: userload => {anywhere => 1},
311: version => {anywhere => 1}, #not used
312: );
313:
314: #
315: # Statistics that are maintained and dislayed in the status line.
316: #
317: my $Transactions = 0; # Number of attempted transactions.
318: my $Failures = 0; # Number of transcations failed.
319:
320: # ResetStatistics:
321: # Resets the statistics counters:
322: #
323: sub ResetStatistics {
324: $Transactions = 0;
325: $Failures = 0;
326: }
327:
328: #------------------------------------------------------------------------
329: #
330: # LocalConnection
331: # Completes the formation of a locally authenticated connection.
332: # This function will ensure that the 'remote' client is really the
333: # local host. If not, the connection is closed, and the function fails.
334: # If so, initcmd is parsed for the name of a file containing the
335: # IDEA session key. The fie is opened, read, deleted and the session
336: # key returned to the caller.
337: #
338: # Parameters:
339: # $Socket - Socket open on client.
340: # $initcmd - The full text of the init command.
341: #
342: # Returns:
343: # IDEA session key on success.
344: # undef on failure.
345: #
346: sub LocalConnection {
347: my ($Socket, $initcmd) = @_;
348: Debug("Attempting local connection: $initcmd client: $clientip");
349: if($clientip ne "127.0.0.1") {
350: &logthis('<font color="red"> LocalConnection rejecting non local: '
351: ."$clientip ne 127.0.0.1 </font>");
352: close $Socket;
353: return undef;
354: } else {
355: chomp($initcmd); # Get rid of \n in filename.
356: my ($init, $type, $name) = split(/:/, $initcmd);
357: Debug(" Init command: $init $type $name ");
358:
359: # Require that $init = init, and $type = local: Otherwise
360: # the caller is insane:
361:
362: if(($init ne "init") && ($type ne "local")) {
363: &logthis('<font color = "red"> LocalConnection: caller is insane! '
364: ."init = $init, and type = $type </font>");
365: close($Socket);;
366: return undef;
367:
368: }
369: # Now get the key filename:
370:
371: my $IDEAKey = lonlocal::ReadKeyFile($name);
372: return $IDEAKey;
373: }
374: }
375: #------------------------------------------------------------------------------
376: #
377: # SSLConnection
378: # Completes the formation of an ssh authenticated connection. The
379: # socket is promoted to an ssl socket. If this promotion and the associated
380: # certificate exchange are successful, the IDEA key is generated and sent
381: # to the remote peer via the SSL tunnel. The IDEA key is also returned to
382: # the caller after the SSL tunnel is torn down.
383: #
384: # Parameters:
385: # Name Type Purpose
386: # $Socket IO::Socket::INET Plaintext socket.
387: #
388: # Returns:
389: # IDEA key on success.
390: # undef on failure.
391: #
392: sub SSLConnection {
393: my $Socket = shift;
394:
395: Debug("SSLConnection: ");
396: my $KeyFile = lonssl::KeyFile();
397: if(!$KeyFile) {
398: my $err = lonssl::LastError();
399: &logthis("<font color=\"red\"> CRITICAL"
400: ."Can't get key file $err </font>");
401: return undef;
402: }
403: my ($CACertificate,
404: $Certificate) = lonssl::CertificateFile();
405:
406:
407: # If any of the key, certificate or certificate authority
408: # certificate filenames are not defined, this can't work.
409:
410: if((!$Certificate) || (!$CACertificate)) {
411: my $err = lonssl::LastError();
412: &logthis("<font color=\"red\"> CRITICAL"
413: ."Can't get certificates: $err </font>");
414:
415: return undef;
416: }
417: Debug("Key: $KeyFile CA: $CACertificate Cert: $Certificate");
418:
419: # Indicate to our peer that we can procede with
420: # a transition to ssl authentication:
421:
422: print $Socket "ok:ssl\n";
423:
424: Debug("Approving promotion -> ssl");
425: # And do so:
426:
427: my $CRLFile;
428: unless ($crlchecked{$clientname}) {
429: $CRLFile = lonssl::CRLFile();
430: $crlchecked{$clientname} = 1;
431: }
432:
433: my $SSLSocket = lonssl::PromoteServerSocket($Socket,
434: $CACertificate,
435: $Certificate,
436: $KeyFile,
437: $clientname,
438: $CRLFile,
439: $clientversion);
440: if(! ($SSLSocket) ) { # SSL socket promotion failed.
441: my $err = lonssl::LastError();
442: &logthis("<font color=\"red\"> CRITICAL "
443: ."SSL Socket promotion failed: $err </font>");
444: return undef;
445: }
446: Debug("SSL Promotion successful");
447:
448: #
449: # The only thing we'll use the socket for is to send the IDEA key
450: # to the peer:
451:
452: my $Key = lonlocal::CreateCipherKey();
453: print $SSLSocket "$Key\n";
454:
455: lonssl::Close($SSLSocket);
456:
457: Debug("Key exchange complete: $Key");
458:
459: return $Key;
460: }
461: #
462: # InsecureConnection:
463: # If insecure connections are allowd,
464: # exchange a challenge with the client to 'validate' the
465: # client (not really, but that's the protocol):
466: # We produce a challenge string that's sent to the client.
467: # The client must then echo the challenge verbatim to us.
468: #
469: # Parameter:
470: # Socket - Socket open on the client.
471: # Returns:
472: # 1 - success.
473: # 0 - failure (e.g.mismatch or insecure not allowed).
474: #
475: sub InsecureConnection {
476: my $Socket = shift;
477:
478: # Don't even start if insecure connections are not allowed.
479: # return 0 if Insecure connections not allowed.
480: #
481: if (ref($secureconf{'connfrom'}) eq 'HASH') {
482: if ($clientsamedom) {
483: if ($secureconf{'connfrom'}{'dom'} eq 'req') {
484: return 0;
485: }
486: } elsif ($clientsameinst) {
487: if ($secureconf{'connfrom'}{'intdom'} eq 'req') {
488: return 0;
489: }
490: } else {
491: if ($secureconf{'connfrom'}{'other'} eq 'req') {
492: return 0;
493: }
494: }
495: } elsif (!$perlvar{londAllowInsecure}) {
496: return 0;
497: }
498:
499: # Fabricate a challenge string and send it..
500:
501: my $challenge = "$$".time; # pid + time.
502: print $Socket "$challenge\n";
503: &status("Waiting for challenge reply");
504:
505: my $answer = <$Socket>;
506: $answer =~s/\W//g;
507: if($challenge eq $answer) {
508: return 1;
509: } else {
510: logthis("<font color='blue'>WARNING client did not respond to challenge</font>");
511: &status("No challenge reqply");
512: return 0;
513: }
514:
515:
516: }
517: #
518: # Safely execute a command (as long as it's not a shel command and doesn
519: # not require/rely on shell escapes. The function operates by doing a
520: # a pipe based fork and capturing stdout and stderr from the pipe.
521: #
522: # Formal Parameters:
523: # $line - A line of text to be executed as a command.
524: # Returns:
525: # The output from that command. If the output is multiline the caller
526: # must know how to split up the output.
527: #
528: #
529: sub execute_command {
530: my ($line) = @_;
531: my @words = split(/\s/, $line); # Bust the command up into words.
532: my $output = "";
533:
534: my $pid = open(CHILD, "-|");
535:
536: if($pid) { # Parent process
537: Debug("In parent process for execute_command");
538: my @data = <CHILD>; # Read the child's outupt...
539: close CHILD;
540: foreach my $output_line (@data) {
541: Debug("Adding $output_line");
542: $output .= $output_line; # Presumably has a \n on it.
543: }
544:
545: } else { # Child process
546: close (STDERR);
547: open (STDERR, ">&STDOUT");# Combine stderr, and stdout...
548: exec(@words); # won't return.
549: }
550: return $output;
551: }
552:
553:
554: # GetCertificate: Given a transaction that requires a certificate,
555: # this function will extract the certificate from the transaction
556: # request. Note that at this point, the only concept of a certificate
557: # is the hostname to which we are connected.
558: #
559: # Parameter:
560: # request - The request sent by our client (this parameterization may
561: # need to change when we really use a certificate granting
562: # authority.
563: #
564: sub GetCertificate {
565: my $request = shift;
566:
567: return $clientip;
568: }
569:
570: #
571: # Return true if client is a manager.
572: #
573: sub isManager {
574: return (($ConnectionType eq "manager") || ($ConnectionType eq "both"));
575: }
576: #
577: # Return tru if client can do client functions
578: #
579: sub isClient {
580: return (($ConnectionType eq "client") || ($ConnectionType eq "both"));
581: }
582:
583:
584: #
585: # ReadManagerTable: Reads in the current manager table. For now this is
586: # done on each manager authentication because:
587: # - These authentications are not frequent
588: # - This allows dynamic changes to the manager table
589: # without the need to signal to the lond.
590: #
591: sub ReadManagerTable {
592:
593: &Debug("Reading manager table");
594: # Clean out the old table first..
595:
596: foreach my $key (keys %managers) {
597: delete $managers{$key};
598: }
599:
600: my $tablename = $perlvar{'lonTabDir'}."/managers.tab";
601: if (!open (MANAGERS, $tablename)) {
602: my $hostname = &Apache::lonnet::hostname($perlvar{'lonHostID'});
603: if (&Apache::lonnet::is_LC_dns($hostname)) {
604: &logthis('<font color="red">No manager table. Nobody can manage!!</font>');
605: }
606: return;
607: }
608: while(my $host = <MANAGERS>) {
609: chomp($host);
610: if ($host =~ "^#") { # Comment line.
611: next;
612: }
613: if (!defined &Apache::lonnet::get_host_ip($host)) { # This is a non cluster member
614: # The entry is of the form:
615: # cluname:hostname
616: # cluname - A 'cluster hostname' is needed in order to negotiate
617: # the host key.
618: # hostname- The dns name of the host.
619: #
620: my($cluname, $dnsname) = split(/:/, $host);
621:
622: my $ip = gethostbyname($dnsname);
623: if(defined($ip)) { # bad names don't deserve entry.
624: my $hostip = inet_ntoa($ip);
625: $managers{$hostip} = $cluname;
626: logthis('<font color="green"> registering manager '.
627: "$dnsname as $cluname with $hostip </font>\n");
628: }
629: } else {
630: logthis('<font color="green"> existing host'." $host</font>\n");
631: $managers{&Apache::lonnet::get_host_ip($host)} = $host; # Use info from cluster tab if cluster memeber
632: }
633: }
634: }
635:
636: #
637: # ValidManager: Determines if a given certificate represents a valid manager.
638: # in this primitive implementation, the 'certificate' is
639: # just the connecting loncapa client name. This is checked
640: # against a valid client list in the configuration.
641: #
642: #
643: sub ValidManager {
644: my $certificate = shift;
645:
646: return isManager;
647: }
648: #
649: # CopyFile: Called as part of the process of installing a
650: # new configuration file. This function copies an existing
651: # file to a backup file.
652: # Parameters:
653: # oldfile - Name of the file to backup.
654: # newfile - Name of the backup file.
655: # Return:
656: # 0 - Failure (errno has failure reason).
657: # 1 - Success.
658: #
659: sub CopyFile {
660:
661: my ($oldfile, $newfile) = @_;
662:
663: if (! copy($oldfile,$newfile)) {
664: return 0;
665: }
666: chmod(0660, $newfile);
667: return 1;
668: }
669: #
670: # Host files are passed out with externally visible host IPs.
671: # If, for example, we are behind a fire-wall or NAT host, our
672: # internally visible IP may be different than the externally
673: # visible IP. Therefore, we always adjust the contents of the
674: # host file so that the entry for ME is the IP that we believe
675: # we have. At present, this is defined as the entry that
676: # DNS has for us. If by some chance we are not able to get a
677: # DNS translation for us, then we assume that the host.tab file
678: # is correct.
679: # BUGBUGBUG - in the future, we really should see if we can
680: # easily query the interface(s) instead.
681: # Parameter(s):
682: # contents - The contents of the host.tab to check.
683: # Returns:
684: # newcontents - The adjusted contents.
685: #
686: #
687: sub AdjustHostContents {
688: my $contents = shift;
689: my $adjusted;
690: my $me = $perlvar{'lonHostID'};
691:
692: foreach my $line (split(/\n/,$contents)) {
693: if(!(($line eq "") || ($line =~ /^ *\#/) || ($line =~ /^ *$/) ||
694: ($line =~ /^\s*\^/))) {
695: chomp($line);
696: my ($id,$domain,$role,$name,$ip,$maxcon,$idleto,$mincon)=split(/:/,$line);
697: if ($id eq $me) {
698: my $ip = gethostbyname($name);
699: my $ipnew = inet_ntoa($ip);
700: $ip = $ipnew;
701: # Reconstruct the host line and append to adjusted:
702:
703: my $newline = "$id:$domain:$role:$name:$ip";
704: if($maxcon ne "") { # Not all hosts have loncnew tuning params
705: $newline .= ":$maxcon:$idleto:$mincon";
706: }
707: $adjusted .= $newline."\n";
708:
709: } else { # Not me, pass unmodified.
710: $adjusted .= $line."\n";
711: }
712: } else { # Blank or comment never re-written.
713: $adjusted .= $line."\n"; # Pass blanks and comments as is.
714: }
715: }
716: return $adjusted;
717: }
718: #
719: # InstallFile: Called to install an administrative file:
720: # - The file is created int a temp directory called <name>.tmp
721: # - lcinstall file is called to install the file.
722: # since the web app has no direct write access to the table directory
723: #
724: # Parameters:
725: # Name of the file
726: # File Contents.
727: # Return:
728: # nonzero - success.
729: # 0 - failure and $! has an errno.
730: # Assumptions:
731: # File installtion is a relatively infrequent
732: #
733: sub InstallFile {
734:
735: my ($Filename, $Contents) = @_;
736: # my $TempFile = $Filename.".tmp";
737: my $exedir = $perlvar{'lonDaemons'};
738: my $tmpdir = $exedir.'/tmp/';
739: my $TempFile = $tmpdir."TempTableFile.tmp";
740:
741: # Open the file for write:
742:
743: my $fh = IO::File->new("> $TempFile"); # Write to temp.
744: if(!(defined $fh)) {
745: &logthis('<font color="red"> Unable to create '.$TempFile."</font>");
746: return 0;
747: }
748: # write the contents of the file:
749:
750: print $fh ($Contents);
751: $fh->close; # In case we ever have a filesystem w. locking
752:
753: chmod(0664, $TempFile); # Everyone can write it.
754:
755: # Use lcinstall file to put the file in the table directory...
756:
757: &Debug("Opening pipe to $exedir/lcinstallfile $TempFile $Filename");
758: my $pf = IO::File->new("| $exedir/lcinstallfile $TempFile $Filename > $exedir/logs/lcinstallfile.log");
759: close $pf;
760: my $err = $?;
761: &Debug("Status is $err");
762: if ($err != 0) {
763: my $msg = $err;
764: if ($err < @installerrors) {
765: $msg = $installerrors[$err];
766: }
767: &logthis("Install failed for table file $Filename : $msg");
768: return 0;
769: }
770:
771: # Remove the temp file:
772:
773: unlink($TempFile);
774:
775: return 1;
776: }
777:
778:
779: #
780: # ConfigFileFromSelector: converts a configuration file selector
781: # into a configuration file pathname.
782: # Supports the following file selectors:
783: # hosts, domain, dns_hosts, dns_domain
784: #
785: #
786: # Parameters:
787: # selector - Configuration file selector.
788: # Returns:
789: # Full path to the file or undef if the selector is invalid.
790: #
791: sub ConfigFileFromSelector {
792: my $selector = shift;
793: my $tablefile;
794:
795: if ($selector eq 'loncapaCAcrl') {
796: my $tabledir = $perlvar{'lonCertificateDirectory'};
797: if (-d $tabledir) {
798: $tablefile = $tabledir.'/'.$selector.'.pem';
799: }
800: } else {
801: my $tabledir = $perlvar{'lonTabDir'}.'/';
802: if (($selector eq "hosts") || ($selector eq "domain") ||
803: ($selector eq "dns_hosts") || ($selector eq "dns_domain")) {
804: $tablefile = $tabledir.$selector.'.tab';
805: }
806: }
807: return $tablefile;
808: }
809: #
810: # PushFile: Called to do an administrative push of a file.
811: # - Ensure the file being pushed is one we support.
812: # - Backup the old file to <filename.saved>
813: # - Separate the contents of the new file out from the
814: # rest of the request.
815: # - Write the new file.
816: # Parameter:
817: # Request - The entire user request. This consists of a : separated
818: # string pushfile:tablename:contents.
819: # NOTE: The contents may have :'s in it as well making things a bit
820: # more interesting... but not much.
821: # Returns:
822: # String to send to client ("ok" or "refused" if bad file).
823: #
824: sub PushFile {
825: my $request = shift;
826: my ($command, $filename, $contents) = split(":", $request, 3);
827: &Debug("PushFile");
828:
829: # At this point in time, pushes for only the following tables and
830: # CRL file are supported:
831: # hosts.tab ($filename eq host).
832: # domain.tab ($filename eq domain).
833: # dns_hosts.tab ($filename eq dns_host).
834: # dns_domain.tab ($filename eq dns_domain).
835: # loncapaCAcrl.pem ($filename eq loncapaCAcrl);
836: # Construct the destination filename or reject the request.
837: #
838: # lonManage is supposed to ensure this, however this session could be
839: # part of some elaborate spoof that managed somehow to authenticate.
840: #
841:
842:
843: my $tablefile = ConfigFileFromSelector($filename);
844: if(! (defined $tablefile)) {
845: return "refused";
846: }
847:
848: # If the file being pushed is the host file, we adjust the entry for ourself so that the
849: # IP will be our current IP as looked up in dns. Note this is only 99% good as it's possible
850: # to conceive of conditions where we don't have a DNS entry locally. This is possible in a
851: # network sense but it doesn't make much sense in a LonCAPA sense so we ignore (for now)
852: # that possibilty.
853:
854: if($filename eq "host") {
855: $contents = AdjustHostContents($contents);
856: } elsif (($filename eq 'dns_host') || ($filename eq 'dns_domain') ||
857: ($filename eq 'loncapaCAcrl')) {
858: if ($contents eq '') {
859: &logthis('<font color="red"> Pushfile: unable to install '
860: .$tablefile." - no data received from push. </font>");
861: return 'error: push had no data';
862: }
863: if (&Apache::lonnet::get_host_ip($clientname)) {
864: my $clienthost = &Apache::lonnet::hostname($clientname);
865: if ($managers{$clientip} eq $clientname) {
866: my $clientprotocol = $Apache::lonnet::protocol{$clientname};
867: $clientprotocol = 'http' if ($clientprotocol ne 'https');
868: my $url;
869: if ($filename eq 'loncapaCAcrl') {
870: $url = '/adm/dns/loncapaCRL';
871: } else {
872: $url = '/adm/'.$filename;
873: $url =~ s{_}{/};
874: }
875: my $request=new HTTP::Request('GET',"$clientprotocol://$clienthost$url");
876: my $response = LONCAPA::LWPReq::makerequest($clientname,$request,'',\%perlvar,60,0);
877: if ($response->is_error()) {
878: &logthis('<font color="red"> Pushfile: unable to install '
879: .$tablefile." - error attempting to pull data. </font>");
880: return 'error: pull failed';
881: } else {
882: my $result = $response->content;
883: chomp($result);
884: unless ($result eq $contents) {
885: &logthis('<font color="red"> Pushfile: unable to install '
886: .$tablefile." - pushed data and pulled data differ. </font>");
887: my $pushleng = length($contents);
888: my $pullleng = length($result);
889: if ($pushleng != $pullleng) {
890: return "error: $pushleng vs $pullleng bytes";
891: } else {
892: return "error: mismatch push and pull";
893: }
894: }
895: }
896: }
897: }
898: }
899:
900: # Install the new file:
901:
902: &logthis("Installing new $tablefile contents:\n$contents");
903: if(!InstallFile($tablefile, $contents)) {
904: &logthis('<font color="red"> Pushfile: unable to install '
905: .$tablefile." $! </font>");
906: return "error:$!";
907: } else {
908: &logthis('<font color="green"> Installed new '.$tablefile
909: ." - transaction by: $clientname ($clientip)</font>");
910: my $adminmail = $perlvar{'lonAdmEMail'};
911: my $admindom = &Apache::lonnet::host_domain($perlvar{'lonHostID'});
912: if ($admindom ne '') {
913: my %domconfig =
914: &Apache::lonnet::get_dom('configuration',['contacts'],$admindom);
915: if (ref($domconfig{'contacts'}) eq 'HASH') {
916: if ($domconfig{'contacts'}{'adminemail'} ne '') {
917: $adminmail = $domconfig{'contacts'}{'adminemail'};
918: }
919: }
920: }
921: if ($adminmail =~ /^[^\@]+\@[^\@]+$/) {
922: my $msg = new Mail::Send;
923: $msg->to($adminmail);
924: $msg->subject('LON-CAPA DNS update on '.$perlvar{'lonHostID'});
925: $msg->add('Content-type','text/plain; charset=UTF-8');
926: if (my $fh = $msg->open()) {
927: print $fh 'Update to '.$tablefile.' from Cluster Manager '.
928: "$clientname ($clientip)\n";
929: $fh->close;
930: }
931: }
932: }
933:
934: # Indicate success:
935:
936: return "ok";
937:
938: }
939:
940: #
941: # Called to re-init either lonc or lond.
942: #
943: # Parameters:
944: # request - The full request by the client. This is of the form
945: # reinit:<process>
946: # where <process> is allowed to be either of
947: # lonc or lond
948: #
949: # Returns:
950: # The string to be sent back to the client either:
951: # ok - Everything worked just fine.
952: # error:why - There was a failure and why describes the reason.
953: #
954: #
955: sub ReinitProcess {
956: my $request = shift;
957:
958:
959: # separate the request (reinit) from the process identifier and
960: # validate it producing the name of the .pid file for the process.
961: #
962: #
963: my ($junk, $process) = split(":", $request);
964: my $processpidfile = $perlvar{'lonDaemons'}.'/logs/';
965: if($process eq 'lonc') {
966: $processpidfile = $processpidfile."lonc.pid";
967: if (!open(PIDFILE, "< $processpidfile")) {
968: return "error:Open failed for $processpidfile";
969: }
970: my $loncpid = <PIDFILE>;
971: close(PIDFILE);
972: logthis('<font color="red"> Reinitializing lonc pid='.$loncpid
973: ."</font>");
974: kill("USR2", $loncpid);
975: } elsif ($process eq 'lond') {
976: logthis('<font color="red"> Reinitializing self (lond) </font>');
977: &UpdateHosts; # Lond is us!!
978: } else {
979: &logthis('<font color="yellow" Invalid reinit request for '.$process
980: ."</font>");
981: return "error:Invalid process identifier $process";
982: }
983: return 'ok';
984: }
985: # Validate a line in a configuration file edit script:
986: # Validation includes:
987: # - Ensuring the command is valid.
988: # - Ensuring the command has sufficient parameters
989: # Parameters:
990: # scriptline - A line to validate (\n has been stripped for what it's worth).
991: #
992: # Return:
993: # 0 - Invalid scriptline.
994: # 1 - Valid scriptline
995: # NOTE:
996: # Only the command syntax is checked, not the executability of the
997: # command.
998: #
999: sub isValidEditCommand {
1000: my $scriptline = shift;
1001:
1002: # Line elements are pipe separated:
1003:
1004: my ($command, $key, $newline) = split(/\|/, $scriptline);
1005: &logthis('<font color="green"> isValideditCommand checking: '.
1006: "Command = '$command', Key = '$key', Newline = '$newline' </font>\n");
1007:
1008: if ($command eq "delete") {
1009: #
1010: # key with no newline.
1011: #
1012: if( ($key eq "") || ($newline ne "")) {
1013: return 0; # Must have key but no newline.
1014: } else {
1015: return 1; # Valid syntax.
1016: }
1017: } elsif ($command eq "replace") {
1018: #
1019: # key and newline:
1020: #
1021: if (($key eq "") || ($newline eq "")) {
1022: return 0;
1023: } else {
1024: return 1;
1025: }
1026: } elsif ($command eq "append") {
1027: if (($key ne "") && ($newline eq "")) {
1028: return 1;
1029: } else {
1030: return 0;
1031: }
1032: } else {
1033: return 0; # Invalid command.
1034: }
1035: return 0; # Should not get here!!!
1036: }
1037: #
1038: # ApplyEdit - Applies an edit command to a line in a configuration
1039: # file. It is the caller's responsiblity to validate the
1040: # edit line.
1041: # Parameters:
1042: # $directive - A single edit directive to apply.
1043: # Edit directives are of the form:
1044: # append|newline - Appends a new line to the file.
1045: # replace|key|newline - Replaces the line with key value 'key'
1046: # delete|key - Deletes the line with key value 'key'.
1047: # $editor - A config file editor object that contains the
1048: # file being edited.
1049: #
1050: sub ApplyEdit {
1051:
1052: my ($directive, $editor) = @_;
1053:
1054: # Break the directive down into its command and its parameters
1055: # (at most two at this point. The meaning of the parameters, if in fact
1056: # they exist depends on the command).
1057:
1058: my ($command, $p1, $p2) = split(/\|/, $directive);
1059:
1060: if($command eq "append") {
1061: $editor->Append($p1); # p1 - key p2 null.
1062: } elsif ($command eq "replace") {
1063: $editor->ReplaceLine($p1, $p2); # p1 - key p2 = newline.
1064: } elsif ($command eq "delete") {
1065: $editor->DeleteLine($p1); # p1 - key p2 null.
1066: } else { # Should not get here!!!
1067: die "Invalid command given to ApplyEdit $command"
1068: }
1069: }
1070: #
1071: # AdjustOurHost:
1072: # Adjusts a host file stored in a configuration file editor object
1073: # for the true IP address of this host. This is necessary for hosts
1074: # that live behind a firewall.
1075: # Those hosts have a publicly distributed IP of the firewall, but
1076: # internally must use their actual IP. We assume that a given
1077: # host only has a single IP interface for now.
1078: # Formal Parameters:
1079: # editor - The configuration file editor to adjust. This
1080: # editor is assumed to contain a hosts.tab file.
1081: # Strategy:
1082: # - Figure out our hostname.
1083: # - Lookup the entry for this host.
1084: # - Modify the line to contain our IP
1085: # - Do a replace for this host.
1086: sub AdjustOurHost {
1087: my $editor = shift;
1088:
1089: # figure out who I am.
1090:
1091: my $myHostName = $perlvar{'lonHostID'}; # LonCAPA hostname.
1092:
1093: # Get my host file entry.
1094:
1095: my $ConfigLine = $editor->Find($myHostName);
1096: if(! (defined $ConfigLine)) {
1097: die "AdjustOurHost - no entry for me in hosts file $myHostName";
1098: }
1099: # figure out my IP:
1100: # Use the config line to get my hostname.
1101: # Use gethostbyname to translate that into an IP address.
1102: #
1103: my ($id,$domain,$role,$name,$maxcon,$idleto,$mincon) = split(/:/,$ConfigLine);
1104: #
1105: # Reassemble the config line from the elements in the list.
1106: # Note that if the loncnew items were not present before, they will
1107: # be now even if they would be empty
1108: #
1109: my $newConfigLine = $id;
1110: foreach my $item ($domain, $role, $name, $maxcon, $idleto, $mincon) {
1111: $newConfigLine .= ":".$item;
1112: }
1113: # Replace the line:
1114:
1115: $editor->ReplaceLine($id, $newConfigLine);
1116:
1117: }
1118: #
1119: # ReplaceConfigFile:
1120: # Replaces a configuration file with the contents of a
1121: # configuration file editor object.
1122: # This is done by:
1123: # - Copying the target file to <filename>.old
1124: # - Writing the new file to <filename>.tmp
1125: # - Moving <filename.tmp> -> <filename>
1126: # This laborious process ensures that the system is never without
1127: # a configuration file that's at least valid (even if the contents
1128: # may be dated).
1129: # Parameters:
1130: # filename - Name of the file to modify... this is a full path.
1131: # editor - Editor containing the file.
1132: #
1133: sub ReplaceConfigFile {
1134:
1135: my ($filename, $editor) = @_;
1136:
1137: CopyFile ($filename, $filename.".old");
1138:
1139: my $contents = $editor->Get(); # Get the contents of the file.
1140:
1141: InstallFile($filename, $contents);
1142: }
1143: #
1144: #
1145: # Called to edit a configuration table file
1146: # Parameters:
1147: # request - The entire command/request sent by lonc or lonManage
1148: # Return:
1149: # The reply to send to the client.
1150: #
1151: sub EditFile {
1152: my $request = shift;
1153:
1154: # Split the command into it's pieces: edit:filetype:script
1155:
1156: my ($cmd, $filetype, $script) = split(/:/, $request,3); # : in script
1157:
1158: # Check the pre-coditions for success:
1159:
1160: if($cmd != "edit") { # Something is amiss afoot alack.
1161: return "error:edit request detected, but request != 'edit'\n";
1162: }
1163: if( ($filetype ne "hosts") &&
1164: ($filetype ne "domain")) {
1165: return "error:edit requested with invalid file specifier: $filetype \n";
1166: }
1167:
1168: # Split the edit script and check it's validity.
1169:
1170: my @scriptlines = split(/\n/, $script); # one line per element.
1171: my $linecount = scalar(@scriptlines);
1172: for(my $i = 0; $i < $linecount; $i++) {
1173: chomp($scriptlines[$i]);
1174: if(!isValidEditCommand($scriptlines[$i])) {
1175: return "error:edit with bad script line: '$scriptlines[$i]' \n";
1176: }
1177: }
1178:
1179: # Execute the edit operation.
1180: # - Create a config file editor for the appropriate file and
1181: # - execute each command in the script:
1182: #
1183: my $configfile = ConfigFileFromSelector($filetype);
1184: if (!(defined $configfile)) {
1185: return "refused\n";
1186: }
1187: my $editor = ConfigFileEdit->new($configfile);
1188:
1189: for (my $i = 0; $i < $linecount; $i++) {
1190: ApplyEdit($scriptlines[$i], $editor);
1191: }
1192: # If the file is the host file, ensure that our host is
1193: # adjusted to have our ip:
1194: #
1195: if($filetype eq "host") {
1196: AdjustOurHost($editor);
1197: }
1198: # Finally replace the current file with our file.
1199: #
1200: ReplaceConfigFile($configfile, $editor);
1201:
1202: return "ok\n";
1203: }
1204:
1205: # read_profile
1206: #
1207: # Returns a set of specific entries from a user's profile file.
1208: # this is a utility function that is used by both get_profile_entry and
1209: # get_profile_entry_encrypted.
1210: #
1211: # Parameters:
1212: # udom - Domain in which the user exists.
1213: # uname - User's account name (loncapa account)
1214: # namespace - The profile namespace to open.
1215: # what - A set of & separated queries.
1216: # Returns:
1217: # If all ok: - The string that needs to be shipped back to the user.
1218: # If failure - A string that starts with error: followed by the failure
1219: # reason.. note that this probabyl gets shipped back to the
1220: # user as well.
1221: #
1222: sub read_profile {
1223: my ($udom, $uname, $namespace, $what) = @_;
1224:
1225: my $hashref = &tie_user_hash($udom, $uname, $namespace,
1226: &GDBM_READER());
1227: if ($hashref) {
1228: my @queries=split(/\&/,$what);
1229: if ($namespace eq 'roles') {
1230: @queries = map { &unescape($_); } @queries;
1231: }
1232: my $qresult='';
1233:
1234: for (my $i=0;$i<=$#queries;$i++) {
1235: $qresult.="$hashref->{$queries[$i]}&"; # Presumably failure gives empty string.
1236: }
1237: $qresult=~s/\&$//; # Remove trailing & from last lookup.
1238: if (&untie_user_hash($hashref)) {
1239: return $qresult;
1240: } else {
1241: return "error: ".($!+0)." untie (GDBM) Failed";
1242: }
1243: } else {
1244: if ($!+0 == 2) {
1245: return "error:No such file or GDBM reported bad block error";
1246: } else {
1247: return "error: ".($!+0)." tie (GDBM) Failed";
1248: }
1249: }
1250:
1251: }
1252: #--------------------- Request Handlers --------------------------------------------
1253: #
1254: # By convention each request handler registers itself prior to the sub
1255: # declaration:
1256: #
1257:
1258: #++
1259: #
1260: # Handles ping requests.
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: # known as.
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 ping_handler {
1274: my ($cmd, $tail, $client) = @_;
1275: Debug("$cmd $tail $client .. $currenthostid:");
1276:
1277: Reply( $client,\$currenthostid,"$cmd:$tail");
1278:
1279: return 1;
1280: }
1281: ®ister_handler("ping", \&ping_handler, 0, 1, 1); # Ping unencoded, client or manager.
1282:
1283: #++
1284: #
1285: # Handles pong requests. Pong replies with our current host id, and
1286: # the results of a ping sent to us via our lonc.
1287: #
1288: # Parameters:
1289: # $cmd - the actual keyword that invoked us.
1290: # $tail - the tail of the request that invoked us.
1291: # $replyfd- File descriptor connected to the client
1292: # Implicit Inputs:
1293: # $currenthostid - Global variable that carries the name of the host we are
1294: # connected to.
1295: # Returns:
1296: # 1 - Ok to continue processing.
1297: # 0 - Program should exit.
1298: # Side effects:
1299: # Reply information is sent to the client.
1300: sub pong_handler {
1301: my ($cmd, $tail, $replyfd) = @_;
1302:
1303: my $reply=&Apache::lonnet::reply("ping",$clientname);
1304: &Reply( $replyfd, "$currenthostid:$reply\n", "$cmd:$tail");
1305: return 1;
1306: }
1307: ®ister_handler("pong", \&pong_handler, 0, 1, 1); # Pong unencoded, client or manager
1308:
1309: #++
1310: # Called to establish an encrypted session key with the remote client.
1311: # Note that with secure lond, in most cases this function is never
1312: # invoked. Instead, the secure session key is established either
1313: # via a local file that's locked down tight and only lives for a short
1314: # time, or via an ssl tunnel...and is generated from a bunch-o-random
1315: # bits from /dev/urandom, rather than the predictable pattern used by
1316: # by this sub. This sub is only used in the old-style insecure
1317: # key negotiation.
1318: # Parameters:
1319: # $cmd - the actual keyword that invoked us.
1320: # $tail - the tail of the request that invoked us.
1321: # $replyfd- File descriptor connected to the client
1322: # Implicit Inputs:
1323: # $currenthostid - Global variable that carries the name of the host
1324: # known as.
1325: # $clientname - Global variable that carries the name of the host we're connected to.
1326: # Returns:
1327: # 1 - Ok to continue processing.
1328: # 0 - Program should exit.
1329: # Implicit Outputs:
1330: # Reply information is sent to the client.
1331: # $cipher is set with a reference to a new IDEA encryption object.
1332: #
1333: sub establish_key_handler {
1334: my ($cmd, $tail, $replyfd) = @_;
1335:
1336: my $buildkey=time.$$.int(rand 100000);
1337: $buildkey=~tr/1-6/A-F/;
1338: $buildkey=int(rand 100000).$buildkey.int(rand 100000);
1339: my $key=$currenthostid.$clientname;
1340: $key=~tr/a-z/A-Z/;
1341: $key=~tr/G-P/0-9/;
1342: $key=~tr/Q-Z/0-9/;
1343: $key=$key.$buildkey.$key.$buildkey.$key.$buildkey;
1344: $key=substr($key,0,32);
1345: my $cipherkey=pack("H32",$key);
1346: $cipher=new IDEA $cipherkey;
1347: &Reply($replyfd, \$buildkey, "$cmd:$tail");
1348:
1349: return 1;
1350:
1351: }
1352: ®ister_handler("ekey", \&establish_key_handler, 0, 1,1);
1353:
1354: # Handler for the load command. Returns the current system load average
1355: # to the requestor.
1356: #
1357: # Parameters:
1358: # $cmd - the actual keyword that invoked us.
1359: # $tail - the tail of the request that invoked us.
1360: # $replyfd- File descriptor connected to the client
1361: # Implicit Inputs:
1362: # $currenthostid - Global variable that carries the name of the host
1363: # known as.
1364: # $clientname - Global variable that carries the name of the host we're connected to.
1365: # Returns:
1366: # 1 - Ok to continue processing.
1367: # 0 - Program should exit.
1368: # Side effects:
1369: # Reply information is sent to the client.
1370: sub load_handler {
1371: my ($cmd, $tail, $replyfd) = @_;
1372:
1373:
1374:
1375: # Get the load average from /proc/loadavg and calculate it as a percentage of
1376: # the allowed load limit as set by the perl global variable lonLoadLim
1377:
1378: my $loadavg;
1379: my $loadfile=IO::File->new('/proc/loadavg');
1380:
1381: $loadavg=<$loadfile>;
1382: $loadavg =~ s/\s.*//g; # Extract the first field only.
1383:
1384: my $loadpercent=100*$loadavg/$perlvar{'lonLoadLim'};
1385:
1386: &Reply( $replyfd, \$loadpercent, "$cmd:$tail");
1387:
1388: return 1;
1389: }
1390: ®ister_handler("load", \&load_handler, 0, 1, 0);
1391:
1392: #
1393: # Process the userload request. This sub returns to the client the current
1394: # user load average. It can be invoked either by clients or managers.
1395: #
1396: # Parameters:
1397: # $cmd - the actual keyword that invoked us.
1398: # $tail - the tail of the request that invoked us.
1399: # $replyfd- File descriptor connected to the client
1400: # Implicit Inputs:
1401: # $currenthostid - Global variable that carries the name of the host
1402: # known as.
1403: # $clientname - Global variable that carries the name of the host we're connected to.
1404: # Returns:
1405: # 1 - Ok to continue processing.
1406: # 0 - Program should exit
1407: # Implicit inputs:
1408: # whatever the userload() function requires.
1409: # Implicit outputs:
1410: # the reply is written to the client.
1411: #
1412: sub user_load_handler {
1413: my ($cmd, $tail, $replyfd) = @_;
1414:
1415: my $userloadpercent=&Apache::lonnet::userload();
1416: &Reply($replyfd, \$userloadpercent, "$cmd:$tail");
1417:
1418: return 1;
1419: }
1420: ®ister_handler("userload", \&user_load_handler, 0, 1, 0);
1421:
1422: # Process a request for the authorization type of a user:
1423: # (userauth).
1424: #
1425: # Parameters:
1426: # $cmd - the actual keyword that invoked us.
1427: # $tail - the tail of the request that invoked us.
1428: # $replyfd- File descriptor connected to the client
1429: # Returns:
1430: # 1 - Ok to continue processing.
1431: # 0 - Program should exit
1432: # Implicit outputs:
1433: # The user authorization type is written to the client.
1434: #
1435: sub user_authorization_type {
1436: my ($cmd, $tail, $replyfd) = @_;
1437:
1438: my $userinput = "$cmd:$tail";
1439:
1440: # Pull the domain and username out of the command tail.
1441: # and call get_auth_type to determine the authentication type.
1442:
1443: my ($udom,$uname)=split(/:/,$tail);
1444: my $result = &get_auth_type($udom, $uname);
1445: if($result eq "nouser") {
1446: &Failure( $replyfd, "unknown_user\n", $userinput);
1447: } else {
1448: #
1449: # We only want to pass the second field from get_auth_type
1450: # for ^krb.. otherwise we'll be handing out the encrypted
1451: # password for internals e.g.
1452: #
1453: my ($type,$otherinfo) = split(/:/,$result);
1454: if($type =~ /^krb/) {
1455: $type = $result;
1456: } else {
1457: $type .= ':';
1458: }
1459: &Reply( $replyfd, \$type, $userinput);
1460: }
1461:
1462: return 1;
1463: }
1464: ®ister_handler("currentauth", \&user_authorization_type, 1, 1, 0);
1465:
1466: # Process a request by a manager to push a hosts or domain table
1467: # to us. We pick apart the command and pass it on to the subs
1468: # that already exist to do this.
1469: #
1470: # Parameters:
1471: # $cmd - the actual keyword that invoked us.
1472: # $tail - the tail of the request that invoked us.
1473: # $client - File descriptor connected to the client
1474: # Returns:
1475: # 1 - Ok to continue processing.
1476: # 0 - Program should exit
1477: # Implicit Output:
1478: # a reply is written to the client.
1479: sub push_file_handler {
1480: my ($cmd, $tail, $client) = @_;
1481: &Debug("In push file handler");
1482: my $userinput = "$cmd:$tail";
1483:
1484: # At this time we only know that the IP of our partner is a valid manager
1485: # the code below is a hook to do further authentication (e.g. to resolve
1486: # spoofing).
1487:
1488: my $cert = &GetCertificate($userinput);
1489: if(&ValidManager($cert)) {
1490: &Debug("Valid manager: $client");
1491:
1492: # Now presumably we have the bona fides of both the peer host and the
1493: # process making the request.
1494:
1495: my $reply = &PushFile($userinput);
1496: &Reply($client, \$reply, $userinput);
1497:
1498: } else {
1499: &logthis("push_file_handler $client is not valid");
1500: &Failure( $client, "refused\n", $userinput);
1501: }
1502: return 1;
1503: }
1504: ®ister_handler("pushfile", \&push_file_handler, 1, 0, 1);
1505:
1506: # The du_handler routine should be considered obsolete and is retained
1507: # for communication with legacy servers. Please see the du2_handler.
1508: #
1509: # du - list the disk usage of a directory recursively.
1510: #
1511: # note: stolen code from the ls file handler
1512: # under construction by Rick Banghart
1513: # .
1514: # Parameters:
1515: # $cmd - The command that dispatched us (du).
1516: # $ududir - The directory path to list... I'm not sure what this
1517: # is relative as things like ls:. return e.g.
1518: # no_such_dir.
1519: # $client - Socket open on the client.
1520: # Returns:
1521: # 1 - indicating that the daemon should not disconnect.
1522: # Side Effects:
1523: # The reply is written to $client.
1524: #
1525: sub du_handler {
1526: my ($cmd, $ududir, $client) = @_;
1527: ($ududir) = split(/:/,$ududir); # Make 'telnet' testing easier.
1528: my $userinput = "$cmd:$ududir";
1529:
1530: if ($ududir=~/\.\./ || $ududir!~m|^/home/httpd/|) {
1531: &Failure($client,"refused\n","$cmd:$ududir");
1532: return 1;
1533: }
1534: # Since $ududir could have some nasties in it,
1535: # we will require that ududir is a valid
1536: # directory. Just in case someone tries to
1537: # slip us a line like .;(cd /home/httpd rm -rf*)
1538: # etc.
1539: #
1540: if (-d $ududir) {
1541: my $total_size=0;
1542: my $code=sub {
1543: if ($_=~/\.\d+\./) { return;}
1544: if ($_=~/\.meta$/) { return;}
1545: if (-d $_) { return;}
1546: $total_size+=(stat($_))[7];
1547: };
1548: chdir($ududir);
1549: find($code,$ududir);
1550: $total_size=int($total_size/1024);
1551: &Reply($client,\$total_size,"$cmd:$ududir");
1552: } else {
1553: &Failure($client, "bad_directory:$ududir\n","$cmd:$ududir");
1554: }
1555: return 1;
1556: }
1557: ®ister_handler("du", \&du_handler, 0, 1, 0);
1558:
1559: # Please also see the du_handler, which is obsoleted by du2.
1560: # du2_handler differs from du_handler in that required path to directory
1561: # provided by &propath() is prepended in the handler instead of on the
1562: # client side.
1563: #
1564: # du2 - list the disk usage of a directory recursively.
1565: #
1566: # Parameters:
1567: # $cmd - The command that dispatched us (du).
1568: # $tail - The tail of the request that invoked us.
1569: # $tail is a : separated list of the following:
1570: # - $ududir - directory path to list (before prepending)
1571: # - $getpropath = 1 if &propath() should prepend
1572: # - $uname - username to use for &propath or user dir
1573: # - $udom - domain to use for &propath or user dir
1574: # All are escaped.
1575: # $client - Socket open on the client.
1576: # Returns:
1577: # 1 - indicating that the daemon should not disconnect.
1578: # Side Effects:
1579: # The reply is written to $client.
1580: #
1581:
1582: sub du2_handler {
1583: my ($cmd, $tail, $client) = @_;
1584: my ($ududir,$getpropath,$uname,$udom) = map { &unescape($_) } (split(/:/, $tail));
1585: my $userinput = "$cmd:$tail";
1586: if (($ududir=~/\.\./) || (($ududir!~m|^/home/httpd/|) && (!$getpropath))) {
1587: &Failure($client,"refused\n","$cmd:$tail");
1588: return 1;
1589: }
1590: if ($getpropath) {
1591: if (($uname =~ /^$LONCAPA::match_name$/) && ($udom =~ /^$LONCAPA::match_domain$/)) {
1592: $ududir = &propath($udom,$uname).'/'.$ududir;
1593: } else {
1594: &Failure($client,"refused\n","$cmd:$tail");
1595: return 1;
1596: }
1597: }
1598: # Since $ududir could have some nasties in it,
1599: # we will require that ududir is a valid
1600: # directory. Just in case someone tries to
1601: # slip us a line like .;(cd /home/httpd rm -rf*)
1602: # etc.
1603: #
1604: if (-d $ududir) {
1605: my $total_size=0;
1606: my $code=sub {
1607: if ($_=~/\.\d+\./) { return;}
1608: if ($_=~/\.meta$/) { return;}
1609: if (-d $_) { return;}
1610: $total_size+=(stat($_))[7];
1611: };
1612: chdir($ududir);
1613: find($code,$ududir);
1614: $total_size=int($total_size/1024);
1615: &Reply($client,\$total_size,"$cmd:$ududir");
1616: } else {
1617: &Failure($client, "bad_directory:$ududir\n","$cmd:$tail");
1618: }
1619: return 1;
1620: }
1621: ®ister_handler("du2", \&du2_handler, 0, 1, 0);
1622:
1623: #
1624: # The ls_handler routine should be considered obsolete and is retained
1625: # for communication with legacy servers. Please see the ls3_handler.
1626: #
1627: # ls - list the contents of a directory. For each file in the
1628: # selected directory the filename followed by the full output of
1629: # the stat function is returned. The returned info for each
1630: # file are separated by ':'. The stat fields are separated by &'s.
1631: #
1632: # If the requested path contains /../ or is:
1633: #
1634: # 1. for a directory, and the path does not begin with one of:
1635: # (a) /home/httpd/html/res/<domain>
1636: # (b) /home/httpd/html/userfiles/
1637: # (c) /home/httpd/lonUsers/<domain>/<1>/<2>/<3>/<username>/userfiles
1638: # or is:
1639: #
1640: # 2. for a file, and the path (after prepending) does not begin with one of:
1641: # (a) /home/httpd/lonUsers/<domain>/<1>/<2>/<3>/<username>/
1642: # (b) /home/httpd/html/res/<domain>/<username>/
1643: # (c) /home/httpd/html/userfiles/<domain>/<username>/
1644: #
1645: # the response will be "refused".
1646: #
1647: # Parameters:
1648: # $cmd - The command that dispatched us (ls).
1649: # $ulsdir - The directory path to list... I'm not sure what this
1650: # is relative as things like ls:. return e.g.
1651: # no_such_dir.
1652: # $client - Socket open on the client.
1653: # Returns:
1654: # 1 - indicating that the daemon should not disconnect.
1655: # Side Effects:
1656: # The reply is written to $client.
1657: #
1658: sub ls_handler {
1659: # obsoleted by ls2_handler
1660: my ($cmd, $ulsdir, $client) = @_;
1661:
1662: my $userinput = "$cmd:$ulsdir";
1663:
1664: my $obs;
1665: my $rights;
1666: my $ulsout='';
1667: my $ulsfn;
1668: if ($ulsdir =~m{/\.\./}) {
1669: &Failure($client,"refused\n",$userinput);
1670: return 1;
1671: }
1672: if (-e $ulsdir) {
1673: if(-d $ulsdir) {
1674: unless (($ulsdir =~ m{^/home/httpd/html/(res/$LONCAPA::match_domain|userfiles/)}) ||
1675: ($ulsdir =~ m{^/home/httpd/lonUsers/$LONCAPA::match_domain(?:/[\w\-.@]){3}/$LONCAPA::match_name/userfiles})) {
1676: &Failure($client,"refused\n",$userinput);
1677: return 1;
1678: }
1679: if (opendir(LSDIR,$ulsdir)) {
1680: while ($ulsfn=readdir(LSDIR)) {
1681: undef($obs);
1682: undef($rights);
1683: my @ulsstats=stat($ulsdir.'/'.$ulsfn);
1684: #We do some obsolete checking here
1685: if(-e $ulsdir.'/'.$ulsfn.".meta") {
1686: open(FILE, $ulsdir.'/'.$ulsfn.".meta");
1687: my @obsolete=<FILE>;
1688: foreach my $obsolete (@obsolete) {
1689: if($obsolete =~ m/(<obsolete>)(on|1)/) { $obs = 1; }
1690: if($obsolete =~ m|(<copyright>)(default)|) { $rights = 1; }
1691: }
1692: }
1693: $ulsout.=$ulsfn.'&'.join('&',@ulsstats);
1694: if($obs eq '1') { $ulsout.="&1"; }
1695: else { $ulsout.="&0"; }
1696: if($rights eq '1') { $ulsout.="&1:"; }
1697: else { $ulsout.="&0:"; }
1698: }
1699: closedir(LSDIR);
1700: }
1701: } else {
1702: unless (($ulsdir =~ m{^/home/httpd/lonUsers/$LONCAPA::match_domain(?:/[\w\-.@]){3}/$LONCAPA::match_name/}) ||
1703: ($ulsdir =~ m{^/home/httpd/html/(?:res|userfiles)/$LONCAPA::match_domain/$LONCAPA::match_name/})) {
1704: &Failure($client,"refused\n",$userinput);
1705: return 1;
1706: }
1707: my @ulsstats=stat($ulsdir);
1708: $ulsout.=$ulsfn.'&'.join('&',@ulsstats).':';
1709: }
1710: } else {
1711: $ulsout='no_such_dir';
1712: }
1713: if ($ulsout eq '') { $ulsout='empty'; }
1714: &Reply($client, \$ulsout, $userinput); # This supports debug logging.
1715:
1716: return 1;
1717:
1718: }
1719: ®ister_handler("ls", \&ls_handler, 0, 1, 0);
1720:
1721: # The ls2_handler routine should be considered obsolete and is retained
1722: # for communication with legacy servers. Please see the ls3_handler.
1723: # Please also see the ls_handler, which was itself obsoleted by ls2.
1724: # ls2_handler differs from ls_handler in that it escapes its return
1725: # values before concatenating them together with ':'s.
1726: #
1727: # ls2 - list the contents of a directory. For each file in the
1728: # selected directory the filename followed by the full output of
1729: # the stat function is returned. The returned info for each
1730: # file are separated by ':'. The stat fields are separated by &'s.
1731: #
1732: # If the requested path contains /../ or is:
1733: #
1734: # 1. for a directory, and the path does not begin with one of:
1735: # (a) /home/httpd/html/res/<domain>
1736: # (b) /home/httpd/html/userfiles/
1737: # (c) /home/httpd/lonUsers/<domain>/<1>/<2>/<3>/<username>/userfiles
1738: # or is:
1739: #
1740: # 2. for a file, and the path (after prepending) does not begin with one of:
1741: # (a) /home/httpd/lonUsers/<domain>/<1>/<2>/<3>/<username>/
1742: # (b) /home/httpd/html/res/<domain>/<username>/
1743: # (c) /home/httpd/html/userfiles/<domain>/<username>/
1744: #
1745: # the response will be "refused".
1746: #
1747: # Parameters:
1748: # $cmd - The command that dispatched us (ls).
1749: # $ulsdir - The directory path to list... I'm not sure what this
1750: # is relative as things like ls:. return e.g.
1751: # no_such_dir.
1752: # $client - Socket open on the client.
1753: # Returns:
1754: # 1 - indicating that the daemon should not disconnect.
1755: # Side Effects:
1756: # The reply is written to $client.
1757: #
1758: sub ls2_handler {
1759: my ($cmd, $ulsdir, $client) = @_;
1760:
1761: my $userinput = "$cmd:$ulsdir";
1762:
1763: my $obs;
1764: my $rights;
1765: my $ulsout='';
1766: my $ulsfn;
1767: if ($ulsdir =~m{/\.\./}) {
1768: &Failure($client,"refused\n",$userinput);
1769: return 1;
1770: }
1771: if (-e $ulsdir) {
1772: if(-d $ulsdir) {
1773: unless (($ulsdir =~ m{^/home/httpd/html/(res/$LONCAPA::match_domain|userfiles/)}) ||
1774: ($ulsdir =~ m{^/home/httpd/lonUsers/$LONCAPA::match_domain(?:/[\w\-.@]){3}/$LONCAPA::match_name/userfiles})) {
1775: &Failure($client,"refused\n","$userinput");
1776: return 1;
1777: }
1778: if (opendir(LSDIR,$ulsdir)) {
1779: while ($ulsfn=readdir(LSDIR)) {
1780: undef($obs);
1781: undef($rights);
1782: my @ulsstats=stat($ulsdir.'/'.$ulsfn);
1783: #We do some obsolete checking here
1784: if(-e $ulsdir.'/'.$ulsfn.".meta") {
1785: open(FILE, $ulsdir.'/'.$ulsfn.".meta");
1786: my @obsolete=<FILE>;
1787: foreach my $obsolete (@obsolete) {
1788: if($obsolete =~ m/(<obsolete>)(on|1)/) { $obs = 1; }
1789: if($obsolete =~ m|(<copyright>)(default)|) {
1790: $rights = 1;
1791: }
1792: }
1793: }
1794: my $tmp = $ulsfn.'&'.join('&',@ulsstats);
1795: if ($obs eq '1') { $tmp.="&1"; } else { $tmp.="&0"; }
1796: if ($rights eq '1') { $tmp.="&1"; } else { $tmp.="&0"; }
1797: $ulsout.= &escape($tmp).':';
1798: }
1799: closedir(LSDIR);
1800: }
1801: } else {
1802: unless (($ulsdir =~ m{^/home/httpd/lonUsers/$LONCAPA::match_domain(?:/[\w\-.@]){3}/$LONCAPA::match_name/}) ||
1803: ($ulsdir =~ m{^/home/httpd/html/(?:res|userfiles)/$LONCAPA::match_domain/$LONCAPA::match_name/})) {
1804: &Failure($client,"refused\n",$userinput);
1805: return 1;
1806: }
1807: my @ulsstats=stat($ulsdir);
1808: $ulsout.=$ulsfn.'&'.join('&',@ulsstats).':';
1809: }
1810: } else {
1811: $ulsout='no_such_dir';
1812: }
1813: if ($ulsout eq '') { $ulsout='empty'; }
1814: &Reply($client, \$ulsout, $userinput); # This supports debug logging.
1815: return 1;
1816: }
1817: ®ister_handler("ls2", \&ls2_handler, 0, 1, 0);
1818: #
1819: # ls3 - list the contents of a directory. For each file in the
1820: # selected directory the filename followed by the full output of
1821: # the stat function is returned. The returned info for each
1822: # file are separated by ':'. The stat fields are separated by &'s.
1823: #
1824: # If the requested path (after prepending) contains /../ or is:
1825: #
1826: # 1. for a directory, and the path does not begin with one of:
1827: # (a) /home/httpd/html/res/<domain>
1828: # (b) /home/httpd/html/userfiles/
1829: # (c) /home/httpd/lonUsers/<domain>/<1>/<2>/<3>/<username>/userfiles
1830: # (d) /home/httpd/html/priv/<domain> and client is the homeserver
1831: #
1832: # or is:
1833: #
1834: # 2. for a file, and the path (after prepending) does not begin with one of:
1835: # (a) /home/httpd/lonUsers/<domain>/<1>/<2>/<3>/<username>/
1836: # (b) /home/httpd/html/res/<domain>/<username>/
1837: # (c) /home/httpd/html/userfiles/<domain>/<username>/
1838: # (d) /home/httpd/html/priv/<domain>/<username>/ and client is the homeserver
1839: #
1840: # the response will be "refused".
1841: #
1842: # Parameters:
1843: # $cmd - The command that dispatched us (ls).
1844: # $tail - The tail of the request that invoked us.
1845: # $tail is a : separated list of the following:
1846: # - $ulsdir - directory path to list (before prepending)
1847: # - $getpropath = 1 if &propath() should prepend
1848: # - $getuserdir = 1 if path to user dir in lonUsers should
1849: # prepend
1850: # - $alternate_root - path to prepend
1851: # - $uname - username to use for &propath or user dir
1852: # - $udom - domain to use for &propath or user dir
1853: # All of these except $getpropath and &getuserdir are escaped.
1854: # no_such_dir.
1855: # $client - Socket open on the client.
1856: # Returns:
1857: # 1 - indicating that the daemon should not disconnect.
1858: # Side Effects:
1859: # The reply is written to $client.
1860: #
1861:
1862: sub ls3_handler {
1863: my ($cmd, $tail, $client) = @_;
1864: my $userinput = "$cmd:$tail";
1865: my ($ulsdir,$getpropath,$getuserdir,$alternate_root,$uname,$udom) =
1866: split(/:/,$tail);
1867: if (defined($ulsdir)) {
1868: $ulsdir = &unescape($ulsdir);
1869: }
1870: if (defined($alternate_root)) {
1871: $alternate_root = &unescape($alternate_root);
1872: }
1873: if (defined($uname)) {
1874: $uname = &unescape($uname);
1875: }
1876: if (defined($udom)) {
1877: $udom = &unescape($udom);
1878: }
1879:
1880: my $dir_root = $perlvar{'lonDocRoot'};
1881: if (($getpropath) || ($getuserdir)) {
1882: if (($uname =~ /^$LONCAPA::match_name$/) && ($udom =~ /^$LONCAPA::match_domain$/)) {
1883: $dir_root = &propath($udom,$uname);
1884: $dir_root =~ s/\/$//;
1885: } else {
1886: &Failure($client,"refused\n",$userinput);
1887: return 1;
1888: }
1889: } elsif ($alternate_root ne '') {
1890: $dir_root = $alternate_root;
1891: }
1892: if (($dir_root ne '') && ($dir_root ne '/')) {
1893: if ($ulsdir =~ /^\//) {
1894: $ulsdir = $dir_root.$ulsdir;
1895: } else {
1896: $ulsdir = $dir_root.'/'.$ulsdir;
1897: }
1898: }
1899: if ($ulsdir =~m{/\.\./}) {
1900: &Failure($client,"refused\n",$userinput);
1901: return 1;
1902: }
1903: my $islocal;
1904: my @machine_ids = &Apache::lonnet::current_machine_ids();
1905: if (grep(/^\Q$clientname\E$/,@machine_ids)) {
1906: $islocal = 1;
1907: }
1908: my $obs;
1909: my $rights;
1910: my $ulsout='';
1911: my $ulsfn;
1912:
1913: my ($crscheck,$toplevel,$currdom,$currnum,$skip);
1914: unless ($islocal) {
1915: my ($major,$minor) = split(/\./,$clientversion);
1916: if (($major < 2) || ($major == 2 && $minor < 12)) {
1917: $crscheck = 1;
1918: }
1919: }
1920: if (-e $ulsdir) {
1921: if(-d $ulsdir) {
1922: unless (($getpropath) || ($getuserdir) ||
1923: ($ulsdir =~ m{^/home/httpd/html/(res/$LONCAPA::match_domain|userfiles/)}) ||
1924: ($ulsdir =~ m{^/home/httpd/lonUsers/$LONCAPA::match_domain(?:/[\w\-.@]){3}/$LONCAPA::match_name/userfiles}) ||
1925: (($ulsdir =~ m{^/home/httpd/html/priv/$LONCAPA::match_domain}) && ($islocal))) {
1926: &Failure($client,"refused\n",$userinput);
1927: return 1;
1928: }
1929: if (($crscheck) &&
1930: ($ulsdir =~ m{^/home/httpd/html/res/($LONCAPA::match_domain)(/?$|/$LONCAPA::match_courseid)})) {
1931: ($currdom,my $posscnum) = ($1,$2);
1932: if (($posscnum eq '') || ($posscnum eq '/')) {
1933: $toplevel = 1;
1934: } else {
1935: $posscnum =~ s{^/+}{};
1936: if (&LONCAPA::Lond::is_course($currdom,$posscnum)) {
1937: $skip = 1;
1938: }
1939: }
1940: }
1941: if ((!$skip) && (opendir(LSDIR,$ulsdir))) {
1942: while ($ulsfn=readdir(LSDIR)) {
1943: if (($crscheck) && ($toplevel) && ($currdom ne '') &&
1944: ($ulsfn =~ /^$LONCAPA::match_courseid$/) && (-d "$ulsdir/$ulsfn")) {
1945: if (&LONCAPA::Lond::is_course($currdom,$ulsfn)) {
1946: next;
1947: }
1948: }
1949: undef($obs);
1950: undef($rights);
1951: my @ulsstats=stat($ulsdir.'/'.$ulsfn);
1952: #We do some obsolete checking here
1953: if(-e $ulsdir.'/'.$ulsfn.".meta") {
1954: open(FILE, $ulsdir.'/'.$ulsfn.".meta");
1955: my @obsolete=<FILE>;
1956: foreach my $obsolete (@obsolete) {
1957: if($obsolete =~ m/(<obsolete>)(on|1)/) { $obs = 1; }
1958: if($obsolete =~ m|(<copyright>)(default)|) {
1959: $rights = 1;
1960: }
1961: }
1962: }
1963: my $tmp = $ulsfn.'&'.join('&',@ulsstats);
1964: if ($obs eq '1') { $tmp.="&1"; } else { $tmp.="&0"; }
1965: if ($rights eq '1') { $tmp.="&1"; } else { $tmp.="&0"; }
1966: $ulsout.= &escape($tmp).':';
1967: }
1968: closedir(LSDIR);
1969: }
1970: } else {
1971: unless (($getpropath) || ($getuserdir) ||
1972: ($ulsdir =~ m{^/home/httpd/lonUsers/$LONCAPA::match_domain(?:/[\w\-.@]){3}/$LONCAPA::match_name/}) ||
1973: ($ulsdir =~ m{^/home/httpd/html/(?:res|userfiles)/$LONCAPA::match_domain/$LONCAPA::match_name/}) ||
1974: (($ulsdir =~ m{^/home/httpd/html/priv/$LONCAPA::match_domain/$LONCAPA::match_name/}) && ($islocal))) {
1975: &Failure($client,"refused\n",$userinput);
1976: return 1;
1977: }
1978: my @ulsstats=stat($ulsdir);
1979: $ulsout.=$ulsfn.'&'.join('&',@ulsstats).':';
1980: }
1981: } else {
1982: $ulsout='no_such_dir';
1983: }
1984: if ($ulsout eq '') { $ulsout='empty'; }
1985: &Reply($client, \$ulsout, $userinput); # This supports debug logging.
1986: return 1;
1987: }
1988: ®ister_handler("ls3", \&ls3_handler, 0, 1, 0);
1989:
1990: sub read_lonnet_global {
1991: my ($cmd,$tail,$client) = @_;
1992: my $userinput = "$cmd:$tail";
1993: my $requested = &Apache::lonnet::thaw_unescape($tail);
1994: my $result;
1995: my %packagevars = (
1996: spareid => \%Apache::lonnet::spareid,
1997: perlvar => \%Apache::lonnet::perlvar,
1998: );
1999: my %limit_to = (
2000: perlvar => {
2001: lonOtherAuthen => 1,
2002: lonBalancer => 1,
2003: lonVersion => 1,
2004: lonAdmEMail => 1,
2005: lonSupportEMail => 1,
2006: lonSysEMail => 1,
2007: lonHostID => 1,
2008: lonRole => 1,
2009: lonDefDomain => 1,
2010: lonLoadLim => 1,
2011: lonUserLoadLim => 1,
2012: }
2013: );
2014: if (ref($requested) eq 'HASH') {
2015: foreach my $what (keys(%{$requested})) {
2016: my $response;
2017: my $items = {};
2018: if (exists($packagevars{$what})) {
2019: if (ref($limit_to{$what}) eq 'HASH') {
2020: foreach my $varname (keys(%{$packagevars{$what}})) {
2021: if ($limit_to{$what}{$varname}) {
2022: $items->{$varname} = $packagevars{$what}{$varname};
2023: }
2024: }
2025: } else {
2026: $items = $packagevars{$what};
2027: }
2028: if ($what eq 'perlvar') {
2029: if (!exists($packagevars{$what}{'lonBalancer'})) {
2030: if ($dist =~ /^(centos|rhes|fedora|scientific)/) {
2031: my $othervarref=LONCAPA::Configuration::read_conf('httpd.conf');
2032: if (ref($othervarref) eq 'HASH') {
2033: $items->{'lonBalancer'} = $othervarref->{'lonBalancer'};
2034: }
2035: }
2036: }
2037: }
2038: $response = &Apache::lonnet::freeze_escape($items);
2039: }
2040: $result .= &escape($what).'='.$response.'&';
2041: }
2042: }
2043: $result =~ s/\&$//;
2044: &Reply($client,\$result,$userinput);
2045: return 1;
2046: }
2047: ®ister_handler("readlonnetglobal", \&read_lonnet_global, 0, 1, 0);
2048:
2049: sub server_devalidatecache_handler {
2050: my ($cmd,$tail,$client) = @_;
2051: my $userinput = "$cmd:$tail";
2052: my $items = &unescape($tail);
2053: my @cached = split(/\&/,$items);
2054: foreach my $key (@cached) {
2055: if ($key =~ /:/) {
2056: my ($name,$id) = map { &unescape($_); } split(/:/,$key);
2057: &Apache::lonnet::devalidate_cache_new($name,$id);
2058: }
2059: }
2060: my $result = 'ok';
2061: &Reply($client,\$result,$userinput);
2062: return 1;
2063: }
2064: ®ister_handler("devalidatecache", \&server_devalidatecache_handler, 0, 1, 0);
2065:
2066: sub server_timezone_handler {
2067: my ($cmd,$tail,$client) = @_;
2068: my $userinput = "$cmd:$tail";
2069: my $timezone;
2070: my $clockfile = '/etc/sysconfig/clock'; # Fedora/CentOS/SuSE
2071: my $tzfile = '/etc/timezone'; # Debian/Ubuntu
2072: if (-e $clockfile) {
2073: if (open(my $fh,"<$clockfile")) {
2074: while (<$fh>) {
2075: next if (/^[\#\s]/);
2076: if (/^(?:TIME)?ZONE\s*=\s*['"]?\s*([\w\/]+)/) {
2077: $timezone = $1;
2078: last;
2079: }
2080: }
2081: close($fh);
2082: }
2083: } elsif (-e $tzfile) {
2084: if (open(my $fh,"<$tzfile")) {
2085: $timezone = <$fh>;
2086: close($fh);
2087: chomp($timezone);
2088: if ($timezone =~ m{^Etc/(\w+)$}) {
2089: $timezone = $1;
2090: }
2091: }
2092: }
2093: &Reply($client,\$timezone,$userinput); # This supports debug logging.
2094: return 1;
2095: }
2096: ®ister_handler("servertimezone", \&server_timezone_handler, 0, 1, 0);
2097:
2098: sub server_loncaparev_handler {
2099: my ($cmd,$tail,$client) = @_;
2100: my $userinput = "$cmd:$tail";
2101: &Reply($client,\$perlvar{'lonVersion'},$userinput);
2102: return 1;
2103: }
2104: ®ister_handler("serverloncaparev", \&server_loncaparev_handler, 0, 1, 0);
2105:
2106: sub server_homeID_handler {
2107: my ($cmd,$tail,$client) = @_;
2108: my $userinput = "$cmd:$tail";
2109: &Reply($client,\$perlvar{'lonHostID'},$userinput);
2110: return 1;
2111: }
2112: ®ister_handler("serverhomeID", \&server_homeID_handler, 0, 1, 0);
2113:
2114: sub server_distarch_handler {
2115: my ($cmd,$tail,$client) = @_;
2116: my $userinput = "$cmd:$tail";
2117: my $reply = &distro_and_arch();
2118: &Reply($client,\$reply,$userinput);
2119: return 1;
2120: }
2121: ®ister_handler("serverdistarch", \&server_distarch_handler, 0, 1, 0);
2122:
2123: sub server_certs_handler {
2124: my ($cmd,$tail,$client) = @_;
2125: my $userinput = "$cmd:$tail";
2126: my $hostname = &Apache::lonnet::hostname($perlvar{'lonHostID'});
2127: my $result = &LONCAPA::Lond::server_certs(\%perlvar,$perlvar{'lonHostID'},$hostname);
2128: &Reply($client,\$result,$userinput);
2129: return;
2130: }
2131: ®ister_handler("servercerts", \&server_certs_handler, 0, 1, 0);
2132:
2133: # Process a reinit request. Reinit requests that either
2134: # lonc or lond be reinitialized so that an updated
2135: # host.tab or domain.tab can be processed.
2136: #
2137: # Parameters:
2138: # $cmd - the actual keyword that invoked us.
2139: # $tail - the tail of the request that invoked us.
2140: # $client - File descriptor connected to the client
2141: # Returns:
2142: # 1 - Ok to continue processing.
2143: # 0 - Program should exit
2144: # Implicit output:
2145: # a reply is sent to the client.
2146: #
2147: sub reinit_process_handler {
2148: my ($cmd, $tail, $client) = @_;
2149:
2150: my $userinput = "$cmd:$tail";
2151:
2152: my $cert = &GetCertificate($userinput);
2153: if(&ValidManager($cert)) {
2154: chomp($userinput);
2155: my $reply = &ReinitProcess($userinput);
2156: &Reply( $client, \$reply, $userinput);
2157: } else {
2158: &Failure( $client, "refused\n", $userinput);
2159: }
2160: return 1;
2161: }
2162: ®ister_handler("reinit", \&reinit_process_handler, 1, 0, 1);
2163:
2164: # Process the editing script for a table edit operation.
2165: # the editing operation must be encrypted and requested by
2166: # a manager host.
2167: #
2168: # Parameters:
2169: # $cmd - the actual keyword that invoked us.
2170: # $tail - the tail of the request that invoked us.
2171: # $client - File descriptor connected to the client
2172: # Returns:
2173: # 1 - Ok to continue processing.
2174: # 0 - Program should exit
2175: # Implicit output:
2176: # a reply is sent to the client.
2177: #
2178: sub edit_table_handler {
2179: my ($command, $tail, $client) = @_;
2180:
2181: my $userinput = "$command:$tail";
2182:
2183: my $cert = &GetCertificate($userinput);
2184: if(&ValidManager($cert)) {
2185: my($filetype, $script) = split(/:/, $tail);
2186: if (($filetype eq "hosts") ||
2187: ($filetype eq "domain")) {
2188: if($script ne "") {
2189: &Reply($client, # BUGBUG - EditFile
2190: &EditFile($userinput), # could fail.
2191: $userinput);
2192: } else {
2193: &Failure($client,"refused\n",$userinput);
2194: }
2195: } else {
2196: &Failure($client,"refused\n",$userinput);
2197: }
2198: } else {
2199: &Failure($client,"refused\n",$userinput);
2200: }
2201: return 1;
2202: }
2203: ®ister_handler("edit", \&edit_table_handler, 1, 0, 1);
2204:
2205: #
2206: # Authenticate a user against the LonCAPA authentication
2207: # database. Note that there are several authentication
2208: # possibilities:
2209: # - unix - The user can be authenticated against the unix
2210: # password file.
2211: # - internal - The user can be authenticated against a purely
2212: # internal per user password file.
2213: # - kerberos - The user can be authenticated against either a kerb4 or kerb5
2214: # ticket granting authority.
2215: # - user - The person tailoring LonCAPA can supply a user authentication
2216: # mechanism that is per system.
2217: #
2218: # Parameters:
2219: # $cmd - The command that got us here.
2220: # $tail - Tail of the command (remaining parameters).
2221: # $client - File descriptor connected to client.
2222: # Returns
2223: # 0 - Requested to exit, caller should shut down.
2224: # 1 - Continue processing.
2225: # Implicit inputs:
2226: # The authentication systems describe above have their own forms of implicit
2227: # input into the authentication process that are described above.
2228: #
2229: sub authenticate_handler {
2230: my ($cmd, $tail, $client) = @_;
2231:
2232:
2233: # Regenerate the full input line
2234:
2235: my $userinput = $cmd.":".$tail;
2236:
2237: # udom - User's domain.
2238: # uname - Username.
2239: # upass - User's password.
2240: # checkdefauth - Pass to validate_user() to try authentication
2241: # with default auth type(s) if no user account.
2242: # clientcancheckhost - Passed by clients with functionality in lonauth.pm
2243: # to check if session can be hosted.
2244:
2245: my ($udom, $uname, $upass, $checkdefauth, $clientcancheckhost)=split(/:/,$tail);
2246: &Debug(" Authenticate domain = $udom, user = $uname, password = $upass, checkdefauth = $checkdefauth");
2247: chomp($upass);
2248: $upass=&unescape($upass);
2249:
2250: my $pwdcorrect = &validate_user($udom,$uname,$upass,$checkdefauth);
2251: if($pwdcorrect) {
2252: my $canhost = 1;
2253: unless ($clientcancheckhost) {
2254: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
2255: my $uint_dom = &Apache::lonnet::internet_dom($uprimary_id);
2256: my @intdoms;
2257: my $internet_names = &Apache::lonnet::get_internet_names($clientname);
2258: if (ref($internet_names) eq 'ARRAY') {
2259: @intdoms = @{$internet_names};
2260: }
2261: unless ($uint_dom ne '' && grep(/^\Q$uint_dom\E$/,@intdoms)) {
2262: my ($remote,$hosted);
2263: my $remotesession = &get_usersession_config($udom,'remotesession');
2264: if (ref($remotesession) eq 'HASH') {
2265: $remote = $remotesession->{'remote'};
2266: }
2267: my $hostedsession = &get_usersession_config($clienthomedom,'hostedsession');
2268: if (ref($hostedsession) eq 'HASH') {
2269: $hosted = $hostedsession->{'hosted'};
2270: }
2271: $canhost = &Apache::lonnet::can_host_session($udom,$clientname,
2272: $clientversion,
2273: $remote,$hosted);
2274: }
2275: }
2276: if ($canhost) {
2277: &Reply( $client, "authorized\n", $userinput);
2278: } else {
2279: &Reply( $client, "not_allowed_to_host\n", $userinput);
2280: }
2281: #
2282: # Bad credentials: Failed to authorize
2283: #
2284: } else {
2285: &Failure( $client, "non_authorized\n", $userinput);
2286: }
2287:
2288: return 1;
2289: }
2290: ®ister_handler("auth", \&authenticate_handler, 1, 1, 0);
2291:
2292: #
2293: # Change a user's password. Note that this function is complicated by
2294: # the fact that a user may be authenticated in more than one way:
2295: # At present, we are not able to change the password for all types of
2296: # authentication methods. Only for:
2297: # unix - unix password or shadow passoword style authentication.
2298: # local - Locally written authentication mechanism.
2299: # For now, kerb4 and kerb5 password changes are not supported and result
2300: # in an error.
2301: # FUTURE WORK:
2302: # Support kerberos passwd changes?
2303: # Parameters:
2304: # $cmd - The command that got us here.
2305: # $tail - Tail of the command (remaining parameters).
2306: # $client - File descriptor connected to client.
2307: # Returns
2308: # 0 - Requested to exit, caller should shut down.
2309: # 1 - Continue processing.
2310: # Implicit inputs:
2311: # The authentication systems describe above have their own forms of implicit
2312: # input into the authentication process that are described above.
2313: sub change_password_handler {
2314: my ($cmd, $tail, $client) = @_;
2315:
2316: my $userinput = $cmd.":".$tail; # Reconstruct client's string.
2317:
2318: #
2319: # udom - user's domain.
2320: # uname - Username.
2321: # upass - Current password.
2322: # npass - New password.
2323: # context - Context in which this was called
2324: # (preferences or reset_by_email).
2325: # lonhost - HostID of server where request originated
2326:
2327: my ($udom,$uname,$upass,$npass,$context,$lonhost)=split(/:/,$tail);
2328:
2329: $upass=&unescape($upass);
2330: $npass=&unescape($npass);
2331: &Debug("Trying to change password for $uname");
2332:
2333: # First require that the user can be authenticated with their
2334: # old password unless context was 'reset_by_email':
2335:
2336: my ($validated,$failure);
2337: if ($context eq 'reset_by_email') {
2338: if ($lonhost eq '') {
2339: $failure = 'invalid_client';
2340: } else {
2341: $validated = 1;
2342: }
2343: } else {
2344: $validated = &validate_user($udom, $uname, $upass);
2345: }
2346: if($validated) {
2347: my $realpasswd = &get_auth_type($udom, $uname); # Defined since authd.
2348:
2349: my ($howpwd,$contentpwd)=split(/:/,$realpasswd);
2350: if ($howpwd eq 'internal') {
2351: &Debug("internal auth");
2352: my $ncpass = &hash_passwd($udom,$npass);
2353: if(&rewrite_password_file($udom, $uname, "internal:$ncpass")) {
2354: my $msg="Result of password change for $uname: pwchange_success";
2355: if ($lonhost) {
2356: $msg .= " - request originated from: $lonhost";
2357: }
2358: &logthis($msg);
2359: &update_passwd_history($uname,$udom,$howpwd,$context);
2360: &Reply($client, "ok\n", $userinput);
2361: } else {
2362: &logthis("Unable to open $uname passwd "
2363: ."to change password");
2364: &Failure( $client, "non_authorized\n",$userinput);
2365: }
2366: } elsif ($howpwd eq 'unix' && $context ne 'reset_by_email') {
2367: my $result = &change_unix_password($uname, $npass);
2368: if ($result eq 'ok') {
2369: &update_passwd_history($uname,$udom,$howpwd,$context);
2370: }
2371: &logthis("Result of password change for $uname: ".
2372: $result);
2373: &Reply($client, \$result, $userinput);
2374: } else {
2375: # this just means that the current password mode is not
2376: # one we know how to change (e.g the kerberos auth modes or
2377: # locally written auth handler).
2378: #
2379: &Failure( $client, "auth_mode_error\n", $userinput);
2380: }
2381:
2382: } else {
2383: if ($failure eq '') {
2384: $failure = 'non_authorized';
2385: }
2386: &Failure( $client, "$failure\n", $userinput);
2387: }
2388:
2389: return 1;
2390: }
2391: ®ister_handler("passwd", \&change_password_handler, 1, 1, 0);
2392:
2393: sub hash_passwd {
2394: my ($domain,$plainpass,@rest) = @_;
2395: my ($salt,$cost);
2396: if (@rest) {
2397: $cost = $rest[0];
2398: # salt is first 22 characters, base-64 encoded by bcrypt
2399: my $plainsalt = substr($rest[1],0,22);
2400: $salt = Crypt::Eksblowfish::Bcrypt::de_base64($plainsalt);
2401: } else {
2402: my %domdefaults = &Apache::lonnet::get_domain_defaults($domain);
2403: my $defaultcost = $domdefaults{'intauth_cost'};
2404: if (($defaultcost eq '') || ($defaultcost =~ /D/)) {
2405: $cost = 10;
2406: } else {
2407: $cost = $defaultcost;
2408: }
2409: # Generate random 16-octet base64 salt
2410: $salt = "";
2411: $salt .= pack("C", int rand(256)) for 1..16;
2412: }
2413: my $hash = &Crypt::Eksblowfish::Bcrypt::bcrypt_hash({
2414: key_nul => 1,
2415: cost => $cost,
2416: salt => $salt,
2417: }, Digest::SHA::sha512(Encode::encode('UTF-8',$plainpass)));
2418:
2419: my $result = join("!", "", "bcrypt", sprintf("%02d",$cost),
2420: &Crypt::Eksblowfish::Bcrypt::en_base64($salt).
2421: &Crypt::Eksblowfish::Bcrypt::en_base64($hash));
2422: return $result;
2423: }
2424:
2425: #
2426: # Create a new user. User in this case means a lon-capa user.
2427: # The user must either already exist in some authentication realm
2428: # like kerberos or the /etc/passwd. If not, a user completely local to
2429: # this loncapa system is created.
2430: #
2431: # Parameters:
2432: # $cmd - The command that got us here.
2433: # $tail - Tail of the command (remaining parameters).
2434: # $client - File descriptor connected to client.
2435: # Returns
2436: # 0 - Requested to exit, caller should shut down.
2437: # 1 - Continue processing.
2438: # Implicit inputs:
2439: # The authentication systems describe above have their own forms of implicit
2440: # input into the authentication process that are described above.
2441: sub add_user_handler {
2442:
2443: my ($cmd, $tail, $client) = @_;
2444:
2445:
2446: my ($udom,$uname,$umode,$npass)=split(/:/,$tail);
2447: my $userinput = $cmd.":".$tail; # Reconstruct the full request line.
2448:
2449: &Debug("cmd =".$cmd." $udom =".$udom." uname=".$uname);
2450:
2451:
2452: if($udom eq $currentdomainid) { # Reject new users for other domains...
2453:
2454: my $oldumask=umask(0077);
2455: chomp($npass);
2456: $npass=&unescape($npass);
2457: my $passfilename = &password_path($udom, $uname);
2458: &Debug("Password file created will be:".$passfilename);
2459: if (-e $passfilename) {
2460: &Failure( $client, "already_exists\n", $userinput);
2461: } else {
2462: my $fperror='';
2463: if (!&mkpath($passfilename)) {
2464: $fperror="error: ".($!+0)." mkdir failed while attempting "
2465: ."makeuser";
2466: }
2467: unless ($fperror) {
2468: my $result=&make_passwd_file($uname,$udom,$umode,$npass,
2469: $passfilename,'makeuser');
2470: &Reply($client,\$result, $userinput); #BUGBUG - could be fail
2471: } else {
2472: &Failure($client, \$fperror, $userinput);
2473: }
2474: }
2475: umask($oldumask);
2476: } else {
2477: &Failure($client, "not_right_domain\n",
2478: $userinput); # Even if we are multihomed.
2479:
2480: }
2481: return 1;
2482:
2483: }
2484: ®ister_handler("makeuser", \&add_user_handler, 1, 1, 0);
2485:
2486: #
2487: # Change the authentication method of a user. Note that this may
2488: # also implicitly change the user's password if, for example, the user is
2489: # joining an existing authentication realm. Known authentication realms at
2490: # this time are:
2491: # internal - Purely internal password file (only loncapa knows this user)
2492: # local - Institutionally written authentication module.
2493: # unix - Unix user (/etc/passwd with or without /etc/shadow).
2494: # kerb4 - kerberos version 4
2495: # kerb5 - kerberos version 5
2496: #
2497: # Parameters:
2498: # $cmd - The command that got us here.
2499: # $tail - Tail of the command (remaining parameters).
2500: # $client - File descriptor connected to client.
2501: # Returns
2502: # 0 - Requested to exit, caller should shut down.
2503: # 1 - Continue processing.
2504: # Implicit inputs:
2505: # The authentication systems describe above have their own forms of implicit
2506: # input into the authentication process that are described above.
2507: # NOTE:
2508: # This is also used to change the authentication credential values (e.g. passwd).
2509: #
2510: #
2511: sub change_authentication_handler {
2512:
2513: my ($cmd, $tail, $client) = @_;
2514:
2515: my $userinput = "$cmd:$tail"; # Reconstruct user input.
2516:
2517: my ($udom,$uname,$umode,$npass)=split(/:/,$tail);
2518: &Debug("cmd = ".$cmd." domain= ".$udom."uname =".$uname." umode= ".$umode);
2519: if ($udom ne $currentdomainid) {
2520: &Failure( $client, "not_right_domain\n", $client);
2521: } else {
2522:
2523: chomp($npass);
2524:
2525: $npass=&unescape($npass);
2526: my $oldauth = &get_auth_type($udom, $uname); # Get old auth info.
2527: my $passfilename = &password_path($udom, $uname);
2528: if ($passfilename) { # Not allowed to create a new user!!
2529: # If just changing the unix passwd. need to arrange to run
2530: # passwd since otherwise make_passwd_file will fail as
2531: # creation of unix authenticated users is no longer supported
2532: # except from the command line, when running make_domain_coordinator.pl
2533:
2534: if(($oldauth =~/^unix/) && ($umode eq "unix")) {
2535: my $result = &change_unix_password($uname, $npass);
2536: &logthis("Result of password change for $uname: ".$result);
2537: if ($result eq "ok") {
2538: &update_passwd_history($uname,$udom,$umode,'changeuserauth');
2539: &Reply($client, \$result);
2540: } else {
2541: &Failure($client, \$result);
2542: }
2543: } else {
2544: my $result=&make_passwd_file($uname,$udom,$umode,$npass,
2545: $passfilename,'changeuserauth');
2546: #
2547: # If the current auth mode is internal, and the old auth mode was
2548: # unix, or krb*, and the user is an author for this domain,
2549: # re-run manage_permissions for that role in order to be able
2550: # to take ownership of the construction space back to www:www
2551: #
2552:
2553:
2554: &Reply($client, \$result, $userinput);
2555: }
2556:
2557:
2558: } else {
2559: &Failure($client, "non_authorized\n", $userinput); # Fail the user now.
2560: }
2561: }
2562: return 1;
2563: }
2564: ®ister_handler("changeuserauth", \&change_authentication_handler, 1,1, 0);
2565:
2566: sub update_passwd_history {
2567: my ($uname,$udom,$umode,$context) = @_;
2568: my $proname=&propath($udom,$uname);
2569: my $now = time;
2570: if (open(my $fh,">>$proname/passwd.log")) {
2571: print $fh "$now:$umode:$context\n";
2572: close($fh);
2573: }
2574: return;
2575: }
2576:
2577: #
2578: # Determines if this is the home server for a user. The home server
2579: # for a user will have his/her lon-capa passwd file. Therefore all we need
2580: # to do is determine if this file exists.
2581: #
2582: # Parameters:
2583: # $cmd - The command that got us here.
2584: # $tail - Tail of the command (remaining parameters).
2585: # $client - File descriptor connected to client.
2586: # Returns
2587: # 0 - Requested to exit, caller should shut down.
2588: # 1 - Continue processing.
2589: # Implicit inputs:
2590: # The authentication systems describe above have their own forms of implicit
2591: # input into the authentication process that are described above.
2592: #
2593: sub is_home_handler {
2594: my ($cmd, $tail, $client) = @_;
2595:
2596: my $userinput = "$cmd:$tail";
2597:
2598: my ($udom,$uname)=split(/:/,$tail);
2599: chomp($uname);
2600: my $passfile = &password_filename($udom, $uname);
2601: if($passfile) {
2602: &Reply( $client, "found\n", $userinput);
2603: } else {
2604: &Failure($client, "not_found\n", $userinput);
2605: }
2606: return 1;
2607: }
2608: ®ister_handler("home", \&is_home_handler, 0,1,0);
2609:
2610: #
2611: # Process an update request for a resource.
2612: # A resource has been modified that we hold a subscription to.
2613: # If the resource is not local, then we must update, or at least invalidate our
2614: # cached copy of the resource.
2615: # Parameters:
2616: # $cmd - The command that got us here.
2617: # $tail - Tail of the command (remaining parameters).
2618: # $client - File descriptor connected to client.
2619: # Returns
2620: # 0 - Requested to exit, caller should shut down.
2621: # 1 - Continue processing.
2622: # Implicit inputs:
2623: # The authentication systems describe above have their own forms of implicit
2624: # input into the authentication process that are described above.
2625: #
2626: sub update_resource_handler {
2627:
2628: my ($cmd, $tail, $client) = @_;
2629:
2630: my $userinput = "$cmd:$tail";
2631:
2632: my $fname= $tail; # This allows interactive testing
2633:
2634:
2635: my $ownership=ishome($fname);
2636: if ($ownership eq 'not_owner') {
2637: if (-e $fname) {
2638: # Delete preview file, if exists
2639: unlink("$fname.tmp");
2640: # Get usage stats
2641: my ($dev,$ino,$mode,$nlink,$uid,$gid,$rdev,$size,
2642: $atime,$mtime,$ctime,$blksize,$blocks)=stat($fname);
2643: my $now=time;
2644: my $since=$now-$atime;
2645: # If the file has not been used within lonExpire seconds,
2646: # unsubscribe from it and delete local copy
2647: if ($since>$perlvar{'lonExpire'}) {
2648: my $reply=&Apache::lonnet::reply("unsub:$fname","$clientname");
2649: &devalidate_meta_cache($fname);
2650: unlink("$fname");
2651: unlink("$fname.meta");
2652: } else {
2653: # Yes, this is in active use. Get a fresh copy. Since it might be in
2654: # very active use and huge (like a movie), copy it to "in.transfer" filename first.
2655: my $transname="$fname.in.transfer";
2656: my $remoteurl=&Apache::lonnet::reply("sub:$fname","$clientname");
2657: my $response;
2658: # FIXME: cannot replicate files that take more than two minutes to transfer -- needs checking now 1200s timeout used
2659: # for LWP request.
2660: my $request=new HTTP::Request('GET',"$remoteurl");
2661: $response=&LONCAPA::LWPReq::makerequest($clientname,$request,$transname,\%perlvar,1200,0,1);
2662: if ($response->is_error()) {
2663: my $reply=&Apache::lonnet::reply("unsub:$fname","$clientname");
2664: &devalidate_meta_cache($fname);
2665: if (-e $transname) {
2666: unlink($transname);
2667: }
2668: unlink($fname);
2669: my $message=$response->status_line;
2670: &logthis("LWP GET: $message for $fname ($remoteurl)");
2671: } else {
2672: if ($remoteurl!~/\.meta$/) {
2673: my $mrequest=new HTTP::Request('GET',$remoteurl.'.meta');
2674: my $mresponse = &LONCAPA::LWPReq::makerequest($clientname,$mrequest,$fname.'.meta',\%perlvar,120,0,1);
2675: if ($mresponse->is_error()) {
2676: unlink($fname.'.meta');
2677: }
2678: }
2679: # we successfully transfered, copy file over to real name
2680: rename($transname,$fname);
2681: &devalidate_meta_cache($fname);
2682: }
2683: }
2684: &Reply( $client, "ok\n", $userinput);
2685: } else {
2686: &Failure($client, "not_found\n", $userinput);
2687: }
2688: } else {
2689: &Failure($client, "rejected\n", $userinput);
2690: }
2691: return 1;
2692: }
2693: ®ister_handler("update", \&update_resource_handler, 0 ,1, 0);
2694:
2695: sub devalidate_meta_cache {
2696: my ($url) = @_;
2697: use Cache::Memcached;
2698: my $memcache = new Cache::Memcached({'servers'=>['127.0.0.1:11211']});
2699: $url = &Apache::lonnet::declutter($url);
2700: $url =~ s-\.meta$--;
2701: my $id = &escape('meta:'.$url);
2702: $memcache->delete($id);
2703: }
2704:
2705: #
2706: # Fetch a user file from a remote server to the user's home directory
2707: # userfiles subdir.
2708: # Parameters:
2709: # $cmd - The command that got us here.
2710: # $tail - Tail of the command (remaining parameters).
2711: # $client - File descriptor connected to client.
2712: # Returns
2713: # 0 - Requested to exit, caller should shut down.
2714: # 1 - Continue processing.
2715: #
2716: sub fetch_user_file_handler {
2717:
2718: my ($cmd, $tail, $client) = @_;
2719:
2720: my $userinput = "$cmd:$tail";
2721: my $fname = $tail;
2722: my ($udom,$uname,$ufile) = ($fname =~ m|^([^/]+)/([^/]+)/(.+)$|);
2723: my $udir=&propath($udom,$uname).'/userfiles';
2724: unless (-e $udir) {
2725: mkdir($udir,0770);
2726: }
2727: Debug("fetch user file for $fname");
2728: if (-e $udir) {
2729: $ufile=~s/^[\.\~]+//;
2730:
2731: # IF necessary, create the path right down to the file.
2732: # Note that any regular files in the way of this path are
2733: # wiped out to deal with some earlier folly of mine.
2734:
2735: if (!&mkpath($udir.'/'.$ufile)) {
2736: &Failure($client, "unable_to_create\n", $userinput);
2737: }
2738:
2739: my $destname=$udir.'/'.$ufile;
2740: my $transname=$udir.'/'.$ufile.'.in.transit';
2741: my $clientprotocol=$Apache::lonnet::protocol{$clientname};
2742: $clientprotocol = 'http' if ($clientprotocol ne 'https');
2743: my $clienthost = &Apache::lonnet::hostname($clientname);
2744: my $remoteurl=$clientprotocol.'://'.$clienthost.'/userfiles/'.$fname;
2745: my $response;
2746: Debug("Remote URL : $remoteurl Transfername $transname Destname: $destname");
2747: my $request=new HTTP::Request('GET',"$remoteurl");
2748: my $verifycert = 1;
2749: my @machine_ids = &Apache::lonnet::current_machine_ids();
2750: if (grep(/^\Q$clientname\E$/,@machine_ids)) {
2751: $verifycert = 0;
2752: }
2753: $response = &LONCAPA::LWPReq::makerequest($clientname,$request,$transname,\%perlvar,1200,$verifycert);
2754: if ($response->is_error()) {
2755: unlink($transname);
2756: my $message=$response->status_line;
2757: &logthis("LWP GET: $message for $fname ($remoteurl)");
2758: &Failure($client, "failed\n", $userinput);
2759: } else {
2760: Debug("Renaming $transname to $destname");
2761: if (!rename($transname,$destname)) {
2762: &logthis("Unable to move $transname to $destname");
2763: unlink($transname);
2764: &Failure($client, "failed\n", $userinput);
2765: } else {
2766: if ($fname =~ /^default.+\.(page|sequence)$/) {
2767: my ($major,$minor) = split(/\./,$clientversion);
2768: if (($major < 2) || ($major == 2 && $minor < 11)) {
2769: my $now = time;
2770: &Apache::lonnet::do_cache_new('crschange',$udom.'_'.$uname,$now,600);
2771: my $key = &escape('internal.contentchange');
2772: my $what = "$key=$now";
2773: my $hashref = &tie_user_hash($udom,$uname,'environment',
2774: &GDBM_WRCREAT(),"P",$what);
2775: if ($hashref) {
2776: $hashref->{$key}=$now;
2777: if (!&untie_user_hash($hashref)) {
2778: &logthis("error: ".($!+0)." untie (GDBM) failed ".
2779: "when updating internal.contentchange");
2780: }
2781: }
2782: }
2783: }
2784: &Reply($client, "ok\n", $userinput);
2785: }
2786: }
2787: } else {
2788: &Failure($client, "not_home\n", $userinput);
2789: }
2790: return 1;
2791: }
2792: ®ister_handler("fetchuserfile", \&fetch_user_file_handler, 0, 1, 0);
2793:
2794: #
2795: # Remove a file from a user's home directory userfiles subdirectory.
2796: # Parameters:
2797: # cmd - the Lond request keyword that got us here.
2798: # tail - the part of the command past the keyword.
2799: # client- File descriptor connected with the client.
2800: #
2801: # Returns:
2802: # 1 - Continue processing.
2803: sub remove_user_file_handler {
2804: my ($cmd, $tail, $client) = @_;
2805:
2806: my ($fname) = split(/:/, $tail); # Get rid of any tailing :'s lonc may have sent.
2807:
2808: my ($udom,$uname,$ufile) = ($fname =~ m|^([^/]+)/([^/]+)/(.+)$|);
2809: if ($ufile =~m|/\.\./|) {
2810: # any files paths with /../ in them refuse
2811: # to deal with
2812: &Failure($client, "refused\n", "$cmd:$tail");
2813: } else {
2814: my $udir = &propath($udom,$uname);
2815: if (-e $udir) {
2816: my $file=$udir.'/userfiles/'.$ufile;
2817: if (-e $file) {
2818: #
2819: # If the file is a regular file unlink is fine...
2820: # However it's possible the client wants a dir
2821: # removed, in which case rmdir is more appropriate.
2822: # Note: rmdir will only remove an empty directory.
2823: #
2824: if (-f $file){
2825: unlink($file);
2826: # for html files remove the associated .bak file
2827: # which may have been created by the editor.
2828: if ($ufile =~ m{^((docs|supplemental)/(?:\d+|default)/\d+(?:|/.+)/)[^/]+\.x?html?$}i) {
2829: my $path = $1;
2830: if (-e $file.'.bak') {
2831: unlink($file.'.bak');
2832: }
2833: }
2834: } elsif(-d $file) {
2835: rmdir($file);
2836: }
2837: if (-e $file) {
2838: # File is still there after we deleted it ?!?
2839:
2840: &Failure($client, "failed\n", "$cmd:$tail");
2841: } else {
2842: &Reply($client, "ok\n", "$cmd:$tail");
2843: }
2844: } else {
2845: &Failure($client, "not_found\n", "$cmd:$tail");
2846: }
2847: } else {
2848: &Failure($client, "not_home\n", "$cmd:$tail");
2849: }
2850: }
2851: return 1;
2852: }
2853: ®ister_handler("removeuserfile", \&remove_user_file_handler, 0,1,0);
2854:
2855: #
2856: # make a directory in a user's home directory userfiles subdirectory.
2857: # Parameters:
2858: # cmd - the Lond request keyword that got us here.
2859: # tail - the part of the command past the keyword.
2860: # client- File descriptor connected with the client.
2861: #
2862: # Returns:
2863: # 1 - Continue processing.
2864: sub mkdir_user_file_handler {
2865: my ($cmd, $tail, $client) = @_;
2866:
2867: my ($dir) = split(/:/, $tail); # Get rid of any tailing :'s lonc may have sent.
2868: $dir=&unescape($dir);
2869: my ($udom,$uname,$ufile) = ($dir =~ m|^([^/]+)/([^/]+)/(.+)$|);
2870: if ($ufile =~m|/\.\./|) {
2871: # any files paths with /../ in them refuse
2872: # to deal with
2873: &Failure($client, "refused\n", "$cmd:$tail");
2874: } else {
2875: my $udir = &propath($udom,$uname);
2876: if (-e $udir) {
2877: my $newdir=$udir.'/userfiles/'.$ufile.'/';
2878: if (!&mkpath($newdir)) {
2879: &Failure($client, "failed\n", "$cmd:$tail");
2880: }
2881: &Reply($client, "ok\n", "$cmd:$tail");
2882: } else {
2883: &Failure($client, "not_home\n", "$cmd:$tail");
2884: }
2885: }
2886: return 1;
2887: }
2888: ®ister_handler("mkdiruserfile", \&mkdir_user_file_handler, 0,1,0);
2889:
2890: #
2891: # rename a file in a user's home directory userfiles subdirectory.
2892: # Parameters:
2893: # cmd - the Lond request keyword that got us here.
2894: # tail - the part of the command past the keyword.
2895: # client- File descriptor connected with the client.
2896: #
2897: # Returns:
2898: # 1 - Continue processing.
2899: sub rename_user_file_handler {
2900: my ($cmd, $tail, $client) = @_;
2901:
2902: my ($udom,$uname,$old,$new) = split(/:/, $tail);
2903: $old=&unescape($old);
2904: $new=&unescape($new);
2905: if ($new =~m|/\.\./| || $old =~m|/\.\./|) {
2906: # any files paths with /../ in them refuse to deal with
2907: &Failure($client, "refused\n", "$cmd:$tail");
2908: } else {
2909: my $udir = &propath($udom,$uname);
2910: if (-e $udir) {
2911: my $oldfile=$udir.'/userfiles/'.$old;
2912: my $newfile=$udir.'/userfiles/'.$new;
2913: if (-e $newfile) {
2914: &Failure($client, "exists\n", "$cmd:$tail");
2915: } elsif (! -e $oldfile) {
2916: &Failure($client, "not_found\n", "$cmd:$tail");
2917: } else {
2918: if (!rename($oldfile,$newfile)) {
2919: &Failure($client, "failed\n", "$cmd:$tail");
2920: } else {
2921: &Reply($client, "ok\n", "$cmd:$tail");
2922: }
2923: }
2924: } else {
2925: &Failure($client, "not_home\n", "$cmd:$tail");
2926: }
2927: }
2928: return 1;
2929: }
2930: ®ister_handler("renameuserfile", \&rename_user_file_handler, 0,1,0);
2931:
2932: #
2933: # Checks if the specified user has an active session on the server
2934: # return ok if so, not_found if not
2935: #
2936: # Parameters:
2937: # cmd - The request keyword that dispatched to tus.
2938: # tail - The tail of the request (colon separated parameters).
2939: # client - Filehandle open on the client.
2940: # Return:
2941: # 1.
2942: sub user_has_session_handler {
2943: my ($cmd, $tail, $client) = @_;
2944:
2945: my ($udom, $uname) = map { &unescape($_) } (split(/:/, $tail));
2946:
2947: opendir(DIR,$perlvar{'lonIDsDir'});
2948: my $filename;
2949: while ($filename=readdir(DIR)) {
2950: last if ($filename=~/^\Q$uname\E_\d+_\Q$udom\E_/);
2951: }
2952: if ($filename) {
2953: &Reply($client, "ok\n", "$cmd:$tail");
2954: } else {
2955: &Failure($client, "not_found\n", "$cmd:$tail");
2956: }
2957: return 1;
2958:
2959: }
2960: ®ister_handler("userhassession", \&user_has_session_handler, 0,1,0);
2961:
2962: #
2963: # Authenticate access to a user file by checking that the token the user's
2964: # passed also exists in their session file
2965: #
2966: # Parameters:
2967: # cmd - The request keyword that dispatched to tus.
2968: # tail - The tail of the request (colon separated parameters).
2969: # client - Filehandle open on the client.
2970: # Return:
2971: # 1.
2972: sub token_auth_user_file_handler {
2973: my ($cmd, $tail, $client) = @_;
2974:
2975: my ($fname, $session) = split(/:/, $tail);
2976:
2977: chomp($session);
2978: my $reply="non_auth";
2979: my $file = $perlvar{'lonIDsDir'}.'/'.$session.'.id';
2980: if (open(ENVIN,"$file")) {
2981: flock(ENVIN,LOCK_SH);
2982: tie(my %disk_env,'GDBM_File',"$file",&GDBM_READER(),0640);
2983: if (exists($disk_env{"userfile.$fname"})) {
2984: $reply="ok";
2985: } else {
2986: foreach my $envname (keys(%disk_env)) {
2987: if ($envname=~ m|^userfile\.\Q$fname\E|) {
2988: $reply="ok";
2989: last;
2990: }
2991: }
2992: }
2993: untie(%disk_env);
2994: close(ENVIN);
2995: &Reply($client, \$reply, "$cmd:$tail");
2996: } else {
2997: &Failure($client, "invalid_token\n", "$cmd:$tail");
2998: }
2999: return 1;
3000:
3001: }
3002: ®ister_handler("tokenauthuserfile", \&token_auth_user_file_handler, 0,1,0);
3003:
3004: #
3005: # Unsubscribe from a resource.
3006: #
3007: # Parameters:
3008: # $cmd - The command that got us here.
3009: # $tail - Tail of the command (remaining parameters).
3010: # $client - File descriptor connected to client.
3011: # Returns
3012: # 0 - Requested to exit, caller should shut down.
3013: # 1 - Continue processing.
3014: #
3015: sub unsubscribe_handler {
3016: my ($cmd, $tail, $client) = @_;
3017:
3018: my $userinput= "$cmd:$tail";
3019:
3020: my ($fname) = split(/:/,$tail); # Split in case there's extrs.
3021:
3022: &Debug("Unsubscribing $fname");
3023: if (-e $fname) {
3024: &Debug("Exists");
3025: &Reply($client, &unsub($fname,$clientip), $userinput);
3026: } else {
3027: &Failure($client, "not_found\n", $userinput);
3028: }
3029: return 1;
3030: }
3031: ®ister_handler("unsub", \&unsubscribe_handler, 0, 1, 0);
3032:
3033: # Subscribe to a resource
3034: #
3035: # Parameters:
3036: # $cmd - The command that got us here.
3037: # $tail - Tail of the command (remaining parameters).
3038: # $client - File descriptor connected to client.
3039: # Returns
3040: # 0 - Requested to exit, caller should shut down.
3041: # 1 - Continue processing.
3042: #
3043: sub subscribe_handler {
3044: my ($cmd, $tail, $client)= @_;
3045:
3046: my $userinput = "$cmd:$tail";
3047:
3048: &Reply( $client, &subscribe($userinput,$clientip), $userinput);
3049:
3050: return 1;
3051: }
3052: ®ister_handler("sub", \&subscribe_handler, 0, 1, 0);
3053:
3054: #
3055: # Determine the latest version of a resource (it looks for the highest
3056: # past version and then returns that +1)
3057: #
3058: # Parameters:
3059: # $cmd - The command that got us here.
3060: # $tail - Tail of the command (remaining parameters).
3061: # (Should consist of an absolute path to a file)
3062: # $client - File descriptor connected to client.
3063: # Returns
3064: # 0 - Requested to exit, caller should shut down.
3065: # 1 - Continue processing.
3066: #
3067: sub current_version_handler {
3068: my ($cmd, $tail, $client) = @_;
3069:
3070: my $userinput= "$cmd:$tail";
3071:
3072: my $fname = $tail;
3073: &Reply( $client, ¤tversion($fname)."\n", $userinput);
3074: return 1;
3075:
3076: }
3077: ®ister_handler("currentversion", \¤t_version_handler, 0, 1, 0);
3078:
3079: # Make an entry in a user's activity log.
3080: #
3081: # Parameters:
3082: # $cmd - The command that got us here.
3083: # $tail - Tail of the command (remaining parameters).
3084: # $client - File descriptor connected to client.
3085: # Returns
3086: # 0 - Requested to exit, caller should shut down.
3087: # 1 - Continue processing.
3088: #
3089: sub activity_log_handler {
3090: my ($cmd, $tail, $client) = @_;
3091:
3092:
3093: my $userinput= "$cmd:$tail";
3094:
3095: my ($udom,$uname,$what)=split(/:/,$tail);
3096: chomp($what);
3097: my $proname=&propath($udom,$uname);
3098: my $now=time;
3099: my $hfh;
3100: if ($hfh=IO::File->new(">>$proname/activity.log")) {
3101: print $hfh "$now:$clientname:$what\n";
3102: &Reply( $client, "ok\n", $userinput);
3103: } else {
3104: &Failure($client, "error: ".($!+0)." IO::File->new Failed "
3105: ."while attempting log\n",
3106: $userinput);
3107: }
3108:
3109: return 1;
3110: }
3111: ®ister_handler("log", \&activity_log_handler, 0, 1, 0);
3112:
3113: #
3114: # Put a namespace entry in a user profile hash.
3115: # My druthers would be for this to be an encrypted interaction too.
3116: # anything that might be an inadvertent covert channel about either
3117: # user authentication or user personal information....
3118: #
3119: # Parameters:
3120: # $cmd - The command that got us here.
3121: # $tail - Tail of the command (remaining parameters).
3122: # $client - File descriptor connected to client.
3123: # Returns
3124: # 0 - Requested to exit, caller should shut down.
3125: # 1 - Continue processing.
3126: #
3127: sub put_user_profile_entry {
3128: my ($cmd, $tail, $client) = @_;
3129:
3130: my $userinput = "$cmd:$tail";
3131:
3132: my ($udom,$uname,$namespace,$what) =split(/:/,$tail,4);
3133: if ($namespace ne 'roles') {
3134: chomp($what);
3135: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3136: &GDBM_WRCREAT(),"P",$what);
3137: if($hashref) {
3138: my @pairs=split(/\&/,$what);
3139: foreach my $pair (@pairs) {
3140: my ($key,$value)=split(/=/,$pair);
3141: $hashref->{$key}=$value;
3142: }
3143: if (&untie_user_hash($hashref)) {
3144: &Reply( $client, "ok\n", $userinput);
3145: } else {
3146: &Failure($client, "error: ".($!+0)." untie(GDBM) failed ".
3147: "while attempting put\n",
3148: $userinput);
3149: }
3150: } else {
3151: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
3152: "while attempting put\n", $userinput);
3153: }
3154: } else {
3155: &Failure( $client, "refused\n", $userinput);
3156: }
3157:
3158: return 1;
3159: }
3160: ®ister_handler("put", \&put_user_profile_entry, 0, 1, 0);
3161:
3162: # Put a piece of new data in hash, returns error if entry already exists
3163: # Parameters:
3164: # $cmd - The command that got us here.
3165: # $tail - Tail of the command (remaining parameters).
3166: # $client - File descriptor connected to client.
3167: # Returns
3168: # 0 - Requested to exit, caller should shut down.
3169: # 1 - Continue processing.
3170: #
3171: sub newput_user_profile_entry {
3172: my ($cmd, $tail, $client) = @_;
3173:
3174: my $userinput = "$cmd:$tail";
3175:
3176: my ($udom,$uname,$namespace,$what) =split(/:/,$tail,4);
3177: if ($namespace eq 'roles') {
3178: &Failure( $client, "refused\n", $userinput);
3179: return 1;
3180: }
3181:
3182: chomp($what);
3183:
3184: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3185: &GDBM_WRCREAT(),"N",$what);
3186: if(!$hashref) {
3187: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
3188: "while attempting put\n", $userinput);
3189: return 1;
3190: }
3191:
3192: my @pairs=split(/\&/,$what);
3193: foreach my $pair (@pairs) {
3194: my ($key,$value)=split(/=/,$pair);
3195: if (exists($hashref->{$key})) {
3196: if (!&untie_user_hash($hashref)) {
3197: &logthis("error: ".($!+0)." untie (GDBM) failed ".
3198: "while attempting newput - early out as key exists");
3199: }
3200: &Failure($client, "key_exists: ".$key."\n",$userinput);
3201: return 1;
3202: }
3203: }
3204:
3205: foreach my $pair (@pairs) {
3206: my ($key,$value)=split(/=/,$pair);
3207: $hashref->{$key}=$value;
3208: }
3209:
3210: if (&untie_user_hash($hashref)) {
3211: &Reply( $client, "ok\n", $userinput);
3212: } else {
3213: &Failure($client, "error: ".($!+0)." untie(GDBM) failed ".
3214: "while attempting put\n",
3215: $userinput);
3216: }
3217: return 1;
3218: }
3219: ®ister_handler("newput", \&newput_user_profile_entry, 0, 1, 0);
3220:
3221: #
3222: # Increment a profile entry in the user history file.
3223: # The history contains keyword value pairs. In this case,
3224: # The value itself is a pair of numbers. The first, the current value
3225: # the second an increment that this function applies to the current
3226: # value.
3227: #
3228: # Parameters:
3229: # $cmd - The command that got us here.
3230: # $tail - Tail of the command (remaining parameters).
3231: # $client - File descriptor connected to client.
3232: # Returns
3233: # 0 - Requested to exit, caller should shut down.
3234: # 1 - Continue processing.
3235: #
3236: sub increment_user_value_handler {
3237: my ($cmd, $tail, $client) = @_;
3238:
3239: my $userinput = "$cmd:$tail";
3240:
3241: my ($udom,$uname,$namespace,$what) =split(/:/,$tail);
3242: if ($namespace ne 'roles') {
3243: chomp($what);
3244: my $hashref = &tie_user_hash($udom, $uname,
3245: $namespace, &GDBM_WRCREAT(),
3246: "P",$what);
3247: if ($hashref) {
3248: my @pairs=split(/\&/,$what);
3249: foreach my $pair (@pairs) {
3250: my ($key,$value)=split(/=/,$pair);
3251: $value = &unescape($value);
3252: # We could check that we have a number...
3253: if (! defined($value) || $value eq '') {
3254: $value = 1;
3255: }
3256: $hashref->{$key}+=$value;
3257: if ($namespace eq 'nohist_resourcetracker') {
3258: if ($hashref->{$key} < 0) {
3259: $hashref->{$key} = 0;
3260: }
3261: }
3262: }
3263: if (&untie_user_hash($hashref)) {
3264: &Reply( $client, "ok\n", $userinput);
3265: } else {
3266: &Failure($client, "error: ".($!+0)." untie(GDBM) failed ".
3267: "while attempting inc\n", $userinput);
3268: }
3269: } else {
3270: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
3271: "while attempting inc\n", $userinput);
3272: }
3273: } else {
3274: &Failure($client, "refused\n", $userinput);
3275: }
3276:
3277: return 1;
3278: }
3279: ®ister_handler("inc", \&increment_user_value_handler, 0, 1, 0);
3280:
3281: #
3282: # Put a new role for a user. Roles are LonCAPA's packaging of permissions.
3283: # Each 'role' a user has implies a set of permissions. Adding a new role
3284: # for a person grants the permissions packaged with that role
3285: # to that user when the role is selected.
3286: #
3287: # Parameters:
3288: # $cmd - The command string (rolesput).
3289: # $tail - The remainder of the request line. For rolesput this
3290: # consists of a colon separated list that contains:
3291: # The domain and user that is granting the role (logged).
3292: # The domain and user that is getting the role.
3293: # The roles being granted as a set of & separated pairs.
3294: # each pair a key value pair.
3295: # $client - File descriptor connected to the client.
3296: # Returns:
3297: # 0 - If the daemon should exit
3298: # 1 - To continue processing.
3299: #
3300: #
3301: sub roles_put_handler {
3302: my ($cmd, $tail, $client) = @_;
3303:
3304: my $userinput = "$cmd:$tail";
3305:
3306: my ( $exedom, $exeuser, $udom, $uname, $what) = split(/:/,$tail);
3307:
3308:
3309: my $namespace='roles';
3310: chomp($what);
3311: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3312: &GDBM_WRCREAT(), "P",
3313: "$exedom:$exeuser:$what");
3314: #
3315: # Log the attempt to set a role. The {}'s here ensure that the file
3316: # handle is open for the minimal amount of time. Since the flush
3317: # is done on close this improves the chances the log will be an un-
3318: # corrupted ordered thing.
3319: if ($hashref) {
3320: my $pass_entry = &get_auth_type($udom, $uname);
3321: my ($auth_type,$pwd) = split(/:/, $pass_entry);
3322: $auth_type = $auth_type.":";
3323: my @pairs=split(/\&/,$what);
3324: foreach my $pair (@pairs) {
3325: my ($key,$value)=split(/=/,$pair);
3326: &manage_permissions($key, $udom, $uname,
3327: $auth_type);
3328: $hashref->{$key}=$value;
3329: }
3330: if (&untie_user_hash($hashref)) {
3331: &Reply($client, "ok\n", $userinput);
3332: } else {
3333: &Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ".
3334: "while attempting rolesput\n", $userinput);
3335: }
3336: } else {
3337: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
3338: "while attempting rolesput\n", $userinput);
3339: }
3340: return 1;
3341: }
3342: ®ister_handler("rolesput", \&roles_put_handler, 1,1,0); # Encoded client only.
3343:
3344: #
3345: # Deletes (removes) a role for a user. This is equivalent to removing
3346: # a permissions package associated with the role from the user's profile.
3347: #
3348: # Parameters:
3349: # $cmd - The command (rolesdel)
3350: # $tail - The remainder of the request line. This consists
3351: # of:
3352: # The domain and user requesting the change (logged)
3353: # The domain and user being changed.
3354: # The roles being revoked. These are shipped to us
3355: # as a bunch of & separated role name keywords.
3356: # $client - The file handle open on the client.
3357: # Returns:
3358: # 1 - Continue processing
3359: # 0 - Exit.
3360: #
3361: sub roles_delete_handler {
3362: my ($cmd, $tail, $client) = @_;
3363:
3364: my $userinput = "$cmd:$tail";
3365:
3366: my ($exedom,$exeuser,$udom,$uname,$what)=split(/:/,$tail);
3367: &Debug("cmd = ".$cmd." exedom= ".$exedom."user = ".$exeuser." udom=".$udom.
3368: "what = ".$what);
3369: my $namespace='roles';
3370: chomp($what);
3371: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3372: &GDBM_WRCREAT(), "D",
3373: "$exedom:$exeuser:$what");
3374:
3375: if ($hashref) {
3376: my @rolekeys=split(/\&/,$what);
3377:
3378: foreach my $key (@rolekeys) {
3379: delete $hashref->{$key};
3380: }
3381: if (&untie_user_hash($hashref)) {
3382: &Reply($client, "ok\n", $userinput);
3383: } else {
3384: &Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ".
3385: "while attempting rolesdel\n", $userinput);
3386: }
3387: } else {
3388: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
3389: "while attempting rolesdel\n", $userinput);
3390: }
3391:
3392: return 1;
3393: }
3394: ®ister_handler("rolesdel", \&roles_delete_handler, 1,1, 0); # Encoded client only
3395:
3396: # Unencrypted get from a user's profile database. See
3397: # GetProfileEntryEncrypted for a version that does end-to-end encryption.
3398: # This function retrieves a keyed item from a specific named database in the
3399: # user's directory.
3400: #
3401: # Parameters:
3402: # $cmd - Command request keyword (get).
3403: # $tail - Tail of the command. This is a colon separated list
3404: # consisting of the domain and username that uniquely
3405: # identifies the profile,
3406: # The 'namespace' which selects the gdbm file to
3407: # do the lookup in,
3408: # & separated list of keys to lookup. Note that
3409: # the values are returned as an & separated list too.
3410: # $client - File descriptor open on the client.
3411: # Returns:
3412: # 1 - Continue processing.
3413: # 0 - Exit.
3414: #
3415: sub get_profile_entry {
3416: my ($cmd, $tail, $client) = @_;
3417:
3418: my $userinput= "$cmd:$tail";
3419:
3420: my ($udom,$uname,$namespace,$what) = split(/:/,$tail);
3421: chomp($what);
3422:
3423:
3424: my $replystring = read_profile($udom, $uname, $namespace, $what);
3425: my ($first) = split(/:/,$replystring);
3426: if($first ne "error") {
3427: &Reply($client, \$replystring, $userinput);
3428: } else {
3429: &Failure($client, $replystring." while attempting get\n", $userinput);
3430: }
3431: return 1;
3432:
3433:
3434: }
3435: ®ister_handler("get", \&get_profile_entry, 0,1,0);
3436:
3437: #
3438: # Process the encrypted get request. Note that the request is sent
3439: # in clear, but the reply is encrypted. This is a small covert channel:
3440: # information about the sensitive keys is given to the snooper. Just not
3441: # information about the values of the sensitive key. Hmm if I wanted to
3442: # know these I'd snoop for the egets. Get the profile item names from them
3443: # and then issue a get for them since there's no enforcement of the
3444: # requirement of an encrypted get for particular profile items. If I
3445: # were re-doing this, I'd force the request to be encrypted as well as the
3446: # reply. I'd also just enforce encrypted transactions for all gets since
3447: # that would prevent any covert channel snooping.
3448: #
3449: # Parameters:
3450: # $cmd - Command keyword of request (eget).
3451: # $tail - Tail of the command. See GetProfileEntry
3452: # for more information about this.
3453: # $client - File open on the client.
3454: # Returns:
3455: # 1 - Continue processing
3456: # 0 - server should exit.
3457: sub get_profile_entry_encrypted {
3458: my ($cmd, $tail, $client) = @_;
3459:
3460: my $userinput = "$cmd:$tail";
3461:
3462: my ($udom,$uname,$namespace,$what) = split(/:/,$tail);
3463: chomp($what);
3464: my $qresult = read_profile($udom, $uname, $namespace, $what);
3465: my ($first) = split(/:/, $qresult);
3466: if($first ne "error") {
3467:
3468: if ($cipher) {
3469: my $cmdlength=length($qresult);
3470: $qresult.=" ";
3471: my $encqresult='';
3472: for(my $encidx=0;$encidx<=$cmdlength;$encidx+=8) {
3473: $encqresult.= unpack("H16",
3474: $cipher->encrypt(substr($qresult,
3475: $encidx,
3476: 8)));
3477: }
3478: &Reply( $client, "enc:$cmdlength:$encqresult\n", $userinput);
3479: } else {
3480: &Failure( $client, "error:no_key\n", $userinput);
3481: }
3482: } else {
3483: &Failure($client, "$qresult while attempting eget\n", $userinput);
3484:
3485: }
3486:
3487: return 1;
3488: }
3489: ®ister_handler("eget", \&get_profile_entry_encrypted, 0, 1, 0);
3490:
3491: #
3492: # Deletes a key in a user profile database.
3493: #
3494: # Parameters:
3495: # $cmd - Command keyword (del).
3496: # $tail - Command tail. IN this case a colon
3497: # separated list containing:
3498: # The domain and user that identifies uniquely
3499: # the identity of the user.
3500: # The profile namespace (name of the profile
3501: # database file).
3502: # & separated list of keywords to delete.
3503: # $client - File open on client socket.
3504: # Returns:
3505: # 1 - Continue processing
3506: # 0 - Exit server.
3507: #
3508: #
3509: sub delete_profile_entry {
3510: my ($cmd, $tail, $client) = @_;
3511:
3512: my $userinput = "cmd:$tail";
3513:
3514: my ($udom,$uname,$namespace,$what) = split(/:/,$tail);
3515: chomp($what);
3516: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3517: &GDBM_WRCREAT(),
3518: "D",$what);
3519: if ($hashref) {
3520: my @keys=split(/\&/,$what);
3521: foreach my $key (@keys) {
3522: delete($hashref->{$key});
3523: }
3524: if (&untie_user_hash($hashref)) {
3525: &Reply($client, "ok\n", $userinput);
3526: } else {
3527: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
3528: "while attempting del\n", $userinput);
3529: }
3530: } else {
3531: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
3532: "while attempting del\n", $userinput);
3533: }
3534: return 1;
3535: }
3536: ®ister_handler("del", \&delete_profile_entry, 0, 1, 0);
3537:
3538: #
3539: # List the set of keys that are defined in a profile database file.
3540: # A successful reply from this will contain an & separated list of
3541: # the keys.
3542: # Parameters:
3543: # $cmd - Command request (keys).
3544: # $tail - Remainder of the request, a colon separated
3545: # list containing domain/user that identifies the
3546: # user being queried, and the database namespace
3547: # (database filename essentially).
3548: # $client - File open on the client.
3549: # Returns:
3550: # 1 - Continue processing.
3551: # 0 - Exit the server.
3552: #
3553: sub get_profile_keys {
3554: my ($cmd, $tail, $client) = @_;
3555:
3556: my $userinput = "$cmd:$tail";
3557:
3558: my ($udom,$uname,$namespace)=split(/:/,$tail);
3559: my $qresult='';
3560: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3561: &GDBM_READER());
3562: if ($hashref) {
3563: foreach my $key (keys %$hashref) {
3564: $qresult.="$key&";
3565: }
3566: if (&untie_user_hash($hashref)) {
3567: $qresult=~s/\&$//;
3568: &Reply($client, \$qresult, $userinput);
3569: } else {
3570: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
3571: "while attempting keys\n", $userinput);
3572: }
3573: } else {
3574: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
3575: "while attempting keys\n", $userinput);
3576: }
3577:
3578: return 1;
3579: }
3580: ®ister_handler("keys", \&get_profile_keys, 0, 1, 0);
3581:
3582: #
3583: # Dump the contents of a user profile database.
3584: # Note that this constitutes a very large covert channel too since
3585: # the dump will return sensitive information that is not encrypted.
3586: # The naive security assumption is that the session negotiation ensures
3587: # our client is trusted and I don't believe that's assured at present.
3588: # Sure want badly to go to ssl or tls. Of course if my peer isn't really
3589: # a LonCAPA node they could have negotiated an encryption key too so >sigh<.
3590: #
3591: # Parameters:
3592: # $cmd - The command request keyword (currentdump).
3593: # $tail - Remainder of the request, consisting of a colon
3594: # separated list that has the domain/username and
3595: # the namespace to dump (database file).
3596: # $client - file open on the remote client.
3597: # Returns:
3598: # 1 - Continue processing.
3599: # 0 - Exit the server.
3600: #
3601: sub dump_profile_database {
3602: my ($cmd, $tail, $client) = @_;
3603:
3604: my $res = LONCAPA::Lond::dump_profile_database($tail);
3605:
3606: if ($res =~ /^error:/) {
3607: Failure($client, \$res, "$cmd:$tail");
3608: } else {
3609: Reply($client, \$res, "$cmd:$tail");
3610: }
3611:
3612: return 1;
3613:
3614: #TODO remove
3615: my $userinput = "$cmd:$tail";
3616:
3617: my ($udom,$uname,$namespace) = split(/:/,$tail);
3618: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3619: &GDBM_READER());
3620: if ($hashref) {
3621: # Structure of %data:
3622: # $data{$symb}->{$parameter}=$value;
3623: # $data{$symb}->{'v.'.$parameter}=$version;
3624: # since $parameter will be unescaped, we do not
3625: # have to worry about silly parameter names...
3626:
3627: my $qresult='';
3628: my %data = (); # A hash of anonymous hashes..
3629: while (my ($key,$value) = each(%$hashref)) {
3630: my ($v,$symb,$param) = split(/:/,$key);
3631: next if ($v eq 'version' || $symb eq 'keys');
3632: next if (exists($data{$symb}) &&
3633: exists($data{$symb}->{$param}) &&
3634: $data{$symb}->{'v.'.$param} > $v);
3635: $data{$symb}->{$param}=$value;
3636: $data{$symb}->{'v.'.$param}=$v;
3637: }
3638: if (&untie_user_hash($hashref)) {
3639: while (my ($symb,$param_hash) = each(%data)) {
3640: while(my ($param,$value) = each (%$param_hash)){
3641: next if ($param =~ /^v\./); # Ignore versions...
3642: #
3643: # Just dump the symb=value pairs separated by &
3644: #
3645: $qresult.=$symb.':'.$param.'='.$value.'&';
3646: }
3647: }
3648: chop($qresult);
3649: &Reply($client , \$qresult, $userinput);
3650: } else {
3651: &Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ".
3652: "while attempting currentdump\n", $userinput);
3653: }
3654: } else {
3655: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
3656: "while attempting currentdump\n", $userinput);
3657: }
3658:
3659: return 1;
3660: }
3661: ®ister_handler("currentdump", \&dump_profile_database, 0, 1, 0);
3662:
3663: #
3664: # Dump a profile database with an optional regular expression
3665: # to match against the keys. In this dump, no effort is made
3666: # to separate symb from version information. Presumably the
3667: # databases that are dumped by this command are of a different
3668: # structure. Need to look at this and improve the documentation of
3669: # both this and the currentdump handler.
3670: # Parameters:
3671: # $cmd - The command keyword.
3672: # $tail - All of the characters after the $cmd:
3673: # These are expected to be a colon
3674: # separated list containing:
3675: # domain/user - identifying the user.
3676: # namespace - identifying the database.
3677: # regexp - optional regular expression
3678: # that is matched against
3679: # database keywords to do
3680: # selective dumps.
3681: # range - optional range of entries
3682: # e.g., 10-20 would return the
3683: # 10th to 19th items, etc.
3684: # $client - Channel open on the client.
3685: # Returns:
3686: # 1 - Continue processing.
3687: # Side effects:
3688: # response is written to $client.
3689: #
3690: sub dump_with_regexp {
3691: my ($cmd, $tail, $client) = @_;
3692:
3693: my $res = LONCAPA::Lond::dump_with_regexp($tail, $clientversion);
3694:
3695: if ($res =~ /^error:/) {
3696: Failure($client, \$res, "$cmd:$tail");
3697: } else {
3698: Reply($client, \$res, "$cmd:$tail");
3699: }
3700:
3701: return 1;
3702: }
3703: ®ister_handler("dump", \&dump_with_regexp, 0, 1, 0);
3704:
3705: # Store a set of key=value pairs associated with a versioned name.
3706: #
3707: # Parameters:
3708: # $cmd - Request command keyword.
3709: # $tail - Tail of the request. This is a colon
3710: # separated list containing:
3711: # domain/user - User and authentication domain.
3712: # namespace - Name of the database being modified
3713: # rid - Resource keyword to modify.
3714: # what - new value associated with rid.
3715: # laststore - (optional) version=timestamp
3716: # for most recent transaction for rid
3717: # in namespace, when cstore was called
3718: #
3719: # $client - Socket open on the client.
3720: #
3721: #
3722: # Returns:
3723: # 1 (keep on processing).
3724: # Side-Effects:
3725: # Writes to the client
3726: # Successful storage will cause either 'ok', or, if $laststore was included
3727: # in the tail of the request, and the version number for the last transaction
3728: # is larger than the version in $laststore, delay:$numtrans , where $numtrans
3729: # is the number of store evevnts recorded for rid in namespace since
3730: # lonnet::store() was called by the client.
3731: #
3732: sub store_handler {
3733: my ($cmd, $tail, $client) = @_;
3734:
3735: my $userinput = "$cmd:$tail";
3736: chomp($tail);
3737: my ($udom,$uname,$namespace,$rid,$what,$laststore) =split(/:/,$tail);
3738: if ($namespace ne 'roles') {
3739:
3740: my @pairs=split(/\&/,$what);
3741: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3742: &GDBM_WRCREAT(), "S",
3743: "$rid:$what");
3744: if ($hashref) {
3745: my $now = time;
3746: my $numtrans;
3747: if ($laststore) {
3748: my ($previousversion,$previoustime) = split(/\=/,$laststore);
3749: my ($lastversion,$lasttime) = (0,0);
3750: $lastversion = $hashref->{"version:$rid"};
3751: if ($lastversion) {
3752: $lasttime = $hashref->{"$lastversion:$rid:timestamp"};
3753: }
3754: if (($previousversion) && ($previousversion !~ /\D/)) {
3755: if (($lastversion > $previousversion) && ($lasttime >= $previoustime)) {
3756: $numtrans = $lastversion - $previousversion;
3757: }
3758: } elsif ($lastversion) {
3759: $numtrans = $lastversion;
3760: }
3761: if ($numtrans) {
3762: $numtrans =~ s/D//g;
3763: }
3764: }
3765: $hashref->{"version:$rid"}++;
3766: my $version=$hashref->{"version:$rid"};
3767: my $allkeys='';
3768: foreach my $pair (@pairs) {
3769: my ($key,$value)=split(/=/,$pair);
3770: $allkeys.=$key.':';
3771: $hashref->{"$version:$rid:$key"}=$value;
3772: }
3773: $hashref->{"$version:$rid:timestamp"}=$now;
3774: $allkeys.='timestamp';
3775: $hashref->{"$version:keys:$rid"}=$allkeys;
3776: if (&untie_user_hash($hashref)) {
3777: my $msg = 'ok';
3778: if ($numtrans) {
3779: $msg = 'delay:'.$numtrans;
3780: }
3781: &Reply($client, "$msg\n", $userinput);
3782: } else {
3783: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
3784: "while attempting store\n", $userinput);
3785: }
3786: } else {
3787: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
3788: "while attempting store\n", $userinput);
3789: }
3790: } else {
3791: &Failure($client, "refused\n", $userinput);
3792: }
3793:
3794: return 1;
3795: }
3796: ®ister_handler("store", \&store_handler, 0, 1, 0);
3797:
3798: # Modify a set of key=value pairs associated with a versioned name.
3799: #
3800: # Parameters:
3801: # $cmd - Request command keyword.
3802: # $tail - Tail of the request. This is a colon
3803: # separated list containing:
3804: # domain/user - User and authentication domain.
3805: # namespace - Name of the database being modified
3806: # rid - Resource keyword to modify.
3807: # v - Version item to modify
3808: # what - new value associated with rid.
3809: #
3810: # $client - Socket open on the client.
3811: #
3812: #
3813: # Returns:
3814: # 1 (keep on processing).
3815: # Side-Effects:
3816: # Writes to the client
3817: sub putstore_handler {
3818: my ($cmd, $tail, $client) = @_;
3819:
3820: my $userinput = "$cmd:$tail";
3821:
3822: my ($udom,$uname,$namespace,$rid,$v,$what) =split(/:/,$tail);
3823: if ($namespace ne 'roles') {
3824:
3825: chomp($what);
3826: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3827: &GDBM_WRCREAT(), "M",
3828: "$rid:$v:$what");
3829: if ($hashref) {
3830: my $now = time;
3831: my %data = &hash_extract($what);
3832: my @allkeys;
3833: while (my($key,$value) = each(%data)) {
3834: push(@allkeys,$key);
3835: $hashref->{"$v:$rid:$key"} = $value;
3836: }
3837: my $allkeys = join(':',@allkeys);
3838: $hashref->{"$v:keys:$rid"}=$allkeys;
3839:
3840: if (&untie_user_hash($hashref)) {
3841: &Reply($client, "ok\n", $userinput);
3842: } else {
3843: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
3844: "while attempting store\n", $userinput);
3845: }
3846: } else {
3847: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
3848: "while attempting store\n", $userinput);
3849: }
3850: } else {
3851: &Failure($client, "refused\n", $userinput);
3852: }
3853:
3854: return 1;
3855: }
3856: ®ister_handler("putstore", \&putstore_handler, 0, 1, 0);
3857:
3858: sub hash_extract {
3859: my ($str)=@_;
3860: my %hash;
3861: foreach my $pair (split(/\&/,$str)) {
3862: my ($key,$value)=split(/=/,$pair);
3863: $hash{$key}=$value;
3864: }
3865: return (%hash);
3866: }
3867: sub hash_to_str {
3868: my ($hash_ref)=@_;
3869: my $str;
3870: foreach my $key (keys(%$hash_ref)) {
3871: $str.=$key.'='.$hash_ref->{$key}.'&';
3872: }
3873: $str=~s/\&$//;
3874: return $str;
3875: }
3876:
3877: #
3878: # Dump out all versions of a resource that has key=value pairs associated
3879: # with it for each version. These resources are built up via the store
3880: # command.
3881: #
3882: # Parameters:
3883: # $cmd - Command keyword.
3884: # $tail - Remainder of the request which consists of:
3885: # domain/user - User and auth. domain.
3886: # namespace - name of resource database.
3887: # rid - Resource id.
3888: # $client - socket open on the client.
3889: #
3890: # Returns:
3891: # 1 indicating the caller should not yet exit.
3892: # Side-effects:
3893: # Writes a reply to the client.
3894: # The reply is a string of the following shape:
3895: # version=current&version:keys=k1:k2...&1:k1=v1&1:k2=v2...
3896: # Where the 1 above represents version 1.
3897: # this continues for all pairs of keys in all versions.
3898: #
3899: #
3900: #
3901: #
3902: sub restore_handler {
3903: my ($cmd, $tail, $client) = @_;
3904:
3905: my $userinput = "$cmd:$tail"; # Only used for logging purposes.
3906: my ($udom,$uname,$namespace,$rid) = split(/:/,$tail);
3907: $namespace=~s/\//\_/g;
3908: $namespace = &LONCAPA::clean_username($namespace);
3909:
3910: chomp($rid);
3911: my $qresult='';
3912: my $hashref = &tie_user_hash($udom, $uname, $namespace, &GDBM_READER());
3913: if ($hashref) {
3914: my $version=$hashref->{"version:$rid"};
3915: $qresult.="version=$version&";
3916: my $scope;
3917: for ($scope=1;$scope<=$version;$scope++) {
3918: my $vkeys=$hashref->{"$scope:keys:$rid"};
3919: my @keys=split(/:/,$vkeys);
3920: my $key;
3921: $qresult.="$scope:keys=$vkeys&";
3922: foreach $key (@keys) {
3923: $qresult.="$scope:$key=".$hashref->{"$scope:$rid:$key"}."&";
3924: }
3925: }
3926: if (&untie_user_hash($hashref)) {
3927: $qresult=~s/\&$//;
3928: &Reply( $client, \$qresult, $userinput);
3929: } else {
3930: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
3931: "while attempting restore\n", $userinput);
3932: }
3933: } else {
3934: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
3935: "while attempting restore\n", $userinput);
3936: }
3937:
3938: return 1;
3939:
3940:
3941: }
3942: ®ister_handler("restore", \&restore_handler, 0,1,0);
3943:
3944: #
3945: # Add a chat message to a synchronous discussion board.
3946: #
3947: # Parameters:
3948: # $cmd - Request keyword.
3949: # $tail - Tail of the command. A colon separated list
3950: # containing:
3951: # cdom - Domain on which the chat board lives
3952: # cnum - Course containing the chat board.
3953: # newpost - Body of the posting.
3954: # group - Optional group, if chat board is only
3955: # accessible in a group within the course
3956: # $client - Socket open on the client.
3957: # Returns:
3958: # 1 - Indicating caller should keep on processing.
3959: #
3960: # Side-effects:
3961: # writes a reply to the client.
3962: #
3963: #
3964: sub send_chat_handler {
3965: my ($cmd, $tail, $client) = @_;
3966:
3967:
3968: my $userinput = "$cmd:$tail";
3969:
3970: my ($cdom,$cnum,$newpost,$group)=split(/\:/,$tail);
3971: &chat_add($cdom,$cnum,$newpost,$group);
3972: &Reply($client, "ok\n", $userinput);
3973:
3974: return 1;
3975: }
3976: ®ister_handler("chatsend", \&send_chat_handler, 0, 1, 0);
3977:
3978: #
3979: # Retrieve the set of chat messages from a discussion board.
3980: #
3981: # Parameters:
3982: # $cmd - Command keyword that initiated the request.
3983: # $tail - Remainder of the request after the command
3984: # keyword. In this case a colon separated list of
3985: # chat domain - Which discussion board.
3986: # chat id - Discussion thread(?)
3987: # domain/user - Authentication domain and username
3988: # of the requesting person.
3989: # group - Optional course group containing
3990: # the board.
3991: # $client - Socket open on the client program.
3992: # Returns:
3993: # 1 - continue processing
3994: # Side effects:
3995: # Response is written to the client.
3996: #
3997: sub retrieve_chat_handler {
3998: my ($cmd, $tail, $client) = @_;
3999:
4000:
4001: my $userinput = "$cmd:$tail";
4002:
4003: my ($cdom,$cnum,$udom,$uname,$group)=split(/\:/,$tail);
4004: my $reply='';
4005: foreach (&get_chat($cdom,$cnum,$udom,$uname,$group)) {
4006: $reply.=&escape($_).':';
4007: }
4008: $reply=~s/\:$//;
4009: &Reply($client, \$reply, $userinput);
4010:
4011:
4012: return 1;
4013: }
4014: ®ister_handler("chatretr", \&retrieve_chat_handler, 0, 1, 0);
4015:
4016: #
4017: # Initiate a query of an sql database. SQL query repsonses get put in
4018: # a file for later retrieval. This prevents sql query results from
4019: # bottlenecking the system. Note that with loncnew, perhaps this is
4020: # less of an issue since multiple outstanding requests can be concurrently
4021: # serviced.
4022: #
4023: # Parameters:
4024: # $cmd - Command keyword that initiated the request.
4025: # $tail - Remainder of the command after the keyword.
4026: # For this function, this consists of a query and
4027: # 3 arguments that are self-documentingly labelled
4028: # in the original arg1, arg2, arg3.
4029: # $client - Socket open on the client.
4030: # Return:
4031: # 1 - Indicating processing should continue.
4032: # Side-effects:
4033: # a reply is written to $client.
4034: #
4035: sub send_query_handler {
4036: my ($cmd, $tail, $client) = @_;
4037:
4038: my $userinput = "$cmd:$tail";
4039:
4040: my ($query,$arg1,$arg2,$arg3)=split(/\:/,$tail);
4041: $query=~s/\n*$//g;
4042: if (($query eq 'usersearch') || ($query eq 'instdirsearch')) {
4043: my $usersearchconf = &get_usersearch_config($currentdomainid,'directorysrch');
4044: my $earlyout;
4045: if (ref($usersearchconf) eq 'HASH') {
4046: if ($currentdomainid eq $clienthomedom) {
4047: if ($query eq 'usersearch') {
4048: if ($usersearchconf->{'lcavailable'} eq '0') {
4049: $earlyout = 1;
4050: }
4051: } else {
4052: if ($usersearchconf->{'available'} eq '0') {
4053: $earlyout = 1;
4054: }
4055: }
4056: } else {
4057: if ($query eq 'usersearch') {
4058: if ($usersearchconf->{'lclocalonly'}) {
4059: $earlyout = 1;
4060: }
4061: } else {
4062: if ($usersearchconf->{'localonly'}) {
4063: $earlyout = 1;
4064: }
4065: }
4066: }
4067: }
4068: if ($earlyout) {
4069: &Reply($client, "query_not_authorized\n");
4070: return 1;
4071: }
4072: }
4073: &Reply($client, "". &sql_reply("$clientname\&$query".
4074: "\&$arg1"."\&$arg2"."\&$arg3")."\n",
4075: $userinput);
4076:
4077: return 1;
4078: }
4079: ®ister_handler("querysend", \&send_query_handler, 0, 1, 0);
4080:
4081: #
4082: # Add a reply to an sql query. SQL queries are done asyncrhonously.
4083: # The query is submitted via a "querysend" transaction.
4084: # There it is passed on to the lonsql daemon, queued and issued to
4085: # mysql.
4086: # This transaction is invoked when the sql transaction is complete
4087: # it stores the query results in flie and indicates query completion.
4088: # presumably local software then fetches this response... I'm guessing
4089: # the sequence is: lonc does a querysend, we ask lonsql to do it.
4090: # lonsql on completion of the query interacts with the lond of our
4091: # client to do a query reply storing two files:
4092: # - id - The results of the query.
4093: # - id.end - Indicating the transaction completed.
4094: # NOTE: id is a unique id assigned to the query and querysend time.
4095: # Parameters:
4096: # $cmd - Command keyword that initiated this request.
4097: # $tail - Remainder of the tail. In this case that's a colon
4098: # separated list containing the query Id and the
4099: # results of the query.
4100: # $client - Socket open on the client.
4101: # Return:
4102: # 1 - Indicating that we should continue processing.
4103: # Side effects:
4104: # ok written to the client.
4105: #
4106: sub reply_query_handler {
4107: my ($cmd, $tail, $client) = @_;
4108:
4109:
4110: my $userinput = "$cmd:$tail";
4111:
4112: my ($id,$reply)=split(/:/,$tail);
4113: my $store;
4114: my $execdir=$perlvar{'lonDaemons'};
4115: if ($store=IO::File->new(">$execdir/tmp/$id")) {
4116: $reply=~s/\&/\n/g;
4117: print $store $reply;
4118: close $store;
4119: my $store2=IO::File->new(">$execdir/tmp/$id.end");
4120: print $store2 "done\n";
4121: close $store2;
4122: &Reply($client, "ok\n", $userinput);
4123: } else {
4124: &Failure($client, "error: ".($!+0)
4125: ." IO::File->new Failed ".
4126: "while attempting queryreply\n", $userinput);
4127: }
4128:
4129:
4130: return 1;
4131: }
4132: ®ister_handler("queryreply", \&reply_query_handler, 0, 1, 0);
4133:
4134: #
4135: # Process the courseidput request. Not quite sure what this means
4136: # at the system level sense. It appears a gdbm file in the
4137: # /home/httpd/lonUsers/$domain/nohist_courseids is tied and
4138: # a set of entries made in that database.
4139: #
4140: # Parameters:
4141: # $cmd - The command keyword that initiated this request.
4142: # $tail - Tail of the command. In this case consists of a colon
4143: # separated list contaning the domain to apply this to and
4144: # an ampersand separated list of keyword=value pairs.
4145: # Each value is a colon separated list that includes:
4146: # description, institutional code and course owner.
4147: # For backward compatibility with versions included
4148: # in LON-CAPA 1.1.X (and earlier) and 1.2.X, institutional
4149: # code and/or course owner are preserved from the existing
4150: # record when writing a new record in response to 1.1 or
4151: # 1.2 implementations of lonnet::flushcourselogs().
4152: #
4153: # $client - Socket open on the client.
4154: # Returns:
4155: # 1 - indicating that processing should continue
4156: #
4157: # Side effects:
4158: # reply is written to the client.
4159: #
4160: sub put_course_id_handler {
4161: my ($cmd, $tail, $client) = @_;
4162:
4163:
4164: my $userinput = "$cmd:$tail";
4165:
4166: my ($udom, $what) = split(/:/, $tail,2);
4167: chomp($what);
4168: my $now=time;
4169: my @pairs=split(/\&/,$what);
4170:
4171: my $hashref = &tie_domain_hash($udom, "nohist_courseids", &GDBM_WRCREAT());
4172: if ($hashref) {
4173: foreach my $pair (@pairs) {
4174: my ($key,$courseinfo) = split(/=/,$pair,2);
4175: $courseinfo =~ s/=/:/g;
4176: if (defined($hashref->{$key})) {
4177: my $value = &Apache::lonnet::thaw_unescape($hashref->{$key});
4178: if (ref($value) eq 'HASH') {
4179: my @items = ('description','inst_code','owner','type');
4180: my @new_items = split(/:/,$courseinfo,-1);
4181: my %storehash;
4182: for (my $i=0; $i<@new_items; $i++) {
4183: $storehash{$items[$i]} = &unescape($new_items[$i]);
4184: }
4185: $hashref->{$key} =
4186: &Apache::lonnet::freeze_escape(\%storehash);
4187: my $unesc_key = &unescape($key);
4188: $hashref->{&escape('lasttime:'.$unesc_key)} = $now;
4189: next;
4190: }
4191: }
4192: my @current_items = split(/:/,$hashref->{$key},-1);
4193: shift(@current_items); # remove description
4194: pop(@current_items); # remove last access
4195: my $numcurrent = scalar(@current_items);
4196: if ($numcurrent > 3) {
4197: $numcurrent = 3;
4198: }
4199: my @new_items = split(/:/,$courseinfo,-1);
4200: my $numnew = scalar(@new_items);
4201: if ($numcurrent > 0) {
4202: if ($numnew <= $numcurrent) { # flushcourselogs() from pre 2.2
4203: for (my $j=$numcurrent-$numnew; $j>=0; $j--) {
4204: $courseinfo .= ':'.$current_items[$numcurrent-$j-1];
4205: }
4206: }
4207: }
4208: $hashref->{$key}=$courseinfo.':'.$now;
4209: }
4210: if (&untie_domain_hash($hashref)) {
4211: &Reply( $client, "ok\n", $userinput);
4212: } else {
4213: &Failure($client, "error: ".($!+0)
4214: ." untie(GDBM) Failed ".
4215: "while attempting courseidput\n", $userinput);
4216: }
4217: } else {
4218: &Failure($client, "error: ".($!+0)
4219: ." tie(GDBM) Failed ".
4220: "while attempting courseidput\n", $userinput);
4221: }
4222:
4223: return 1;
4224: }
4225: ®ister_handler("courseidput", \&put_course_id_handler, 0, 1, 0);
4226:
4227: sub put_course_id_hash_handler {
4228: my ($cmd, $tail, $client) = @_;
4229: my $userinput = "$cmd:$tail";
4230: my ($udom,$mode,$what) = split(/:/, $tail,3);
4231: chomp($what);
4232: my $now=time;
4233: my @pairs=split(/\&/,$what);
4234: my $hashref = &tie_domain_hash($udom, "nohist_courseids", &GDBM_WRCREAT());
4235: if ($hashref) {
4236: foreach my $pair (@pairs) {
4237: my ($key,$value)=split(/=/,$pair);
4238: my $unesc_key = &unescape($key);
4239: if ($mode ne 'timeonly') {
4240: if (!defined($hashref->{&escape('lasttime:'.$unesc_key)})) {
4241: my $curritems = &Apache::lonnet::thaw_unescape($key);
4242: if (ref($curritems) ne 'HASH') {
4243: my @current_items = split(/:/,$hashref->{$key},-1);
4244: my $lasttime = pop(@current_items);
4245: $hashref->{&escape('lasttime:'.$unesc_key)} = $lasttime;
4246: } else {
4247: $hashref->{&escape('lasttime:'.$unesc_key)} = '';
4248: }
4249: }
4250: $hashref->{$key} = $value;
4251: }
4252: if ($mode ne 'notime') {
4253: $hashref->{&escape('lasttime:'.$unesc_key)} = $now;
4254: }
4255: }
4256: if (&untie_domain_hash($hashref)) {
4257: &Reply($client, "ok\n", $userinput);
4258: } else {
4259: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4260: "while attempting courseidputhash\n", $userinput);
4261: }
4262: } else {
4263: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
4264: "while attempting courseidputhash\n", $userinput);
4265: }
4266: return 1;
4267: }
4268: ®ister_handler("courseidputhash", \&put_course_id_hash_handler, 0, 1, 0);
4269:
4270: # Retrieves the value of a course id resource keyword pattern
4271: # defined since a starting date. Both the starting date and the
4272: # keyword pattern are optional. If the starting date is not supplied it
4273: # is treated as the beginning of time. If the pattern is not found,
4274: # it is treatred as "." matching everything.
4275: #
4276: # Parameters:
4277: # $cmd - Command keyword that resulted in us being dispatched.
4278: # $tail - The remainder of the command that, in this case, consists
4279: # of a colon separated list of:
4280: # domain - The domain in which the course database is
4281: # defined.
4282: # since - Optional parameter describing the minimum
4283: # time of definition(?) of the resources that
4284: # will match the dump.
4285: # description - regular expression that is used to filter
4286: # the dump. Only keywords matching this regexp
4287: # will be used.
4288: # institutional code - optional supplied code to filter
4289: # the dump. Only courses with an institutional code
4290: # that match the supplied code will be returned.
4291: # owner - optional supplied username and domain of owner to
4292: # filter the dump. Only courses for which the course
4293: # owner matches the supplied username and/or domain
4294: # will be returned. Pre-2.2.0 legacy entries from
4295: # nohist_courseiddump will only contain usernames.
4296: # type - optional parameter for selection
4297: # regexp_ok - if 1 or -1 allow the supplied institutional code
4298: # filter to behave as a regular expression:
4299: # 1 will not exclude the course if the instcode matches the RE
4300: # -1 will exclude the course if the instcode matches the RE
4301: # rtn_as_hash - whether to return the information available for
4302: # each matched item as a frozen hash of all
4303: # key, value pairs in the item's hash, or as a
4304: # colon-separated list of (in order) description,
4305: # institutional code, and course owner.
4306: # selfenrollonly - filter by courses allowing self-enrollment
4307: # now or in the future (selfenrollonly = 1).
4308: # catfilter - filter by course category, assigned to a course
4309: # using manually defined categories (i.e., not
4310: # self-cataloging based on on institutional code).
4311: # showhidden - include course in results even if course
4312: # was set to be excluded from course catalog (DC only).
4313: # caller - if set to 'coursecatalog', courses set to be hidden
4314: # from course catalog will be excluded from results (unless
4315: # overridden by "showhidden".
4316: # cloner - escaped username:domain of course cloner (if picking course to
4317: # clone).
4318: # cc_clone_list - escaped comma separated list of courses for which
4319: # course cloner has active CC role (and so can clone
4320: # automatically).
4321: # cloneonly - filter by courses for which cloner has rights to clone.
4322: # createdbefore - include courses for which creation date preceeded this date.
4323: # createdafter - include courses for which creation date followed this date.
4324: # creationcontext - include courses created in specified context
4325: #
4326: # domcloner - flag to indicate if user can create CCs in course's domain.
4327: # If so, ability to clone course is automatic.
4328: # hasuniquecode - filter by courses for which a six character unique code has
4329: # been set.
4330: #
4331: # $client - The socket open on the client.
4332: # Returns:
4333: # 1 - Continue processing.
4334: # Side Effects:
4335: # a reply is written to $client.
4336: sub dump_course_id_handler {
4337: my ($cmd, $tail, $client) = @_;
4338:
4339: my $res = LONCAPA::Lond::dump_course_id_handler($tail);
4340: if ($res =~ /^error:/) {
4341: Failure($client, \$res, "$cmd:$tail");
4342: } else {
4343: Reply($client, \$res, "$cmd:$tail");
4344: }
4345:
4346: return 1;
4347:
4348: #TODO remove
4349: my $userinput = "$cmd:$tail";
4350:
4351: my ($udom,$since,$description,$instcodefilter,$ownerfilter,$coursefilter,
4352: $typefilter,$regexp_ok,$rtn_as_hash,$selfenrollonly,$catfilter,$showhidden,
4353: $caller,$cloner,$cc_clone_list,$cloneonly,$createdbefore,$createdafter,
4354: $creationcontext,$domcloner,$hasuniquecode) =split(/:/,$tail);
4355: my $now = time;
4356: my ($cloneruname,$clonerudom,%cc_clone);
4357: if (defined($description)) {
4358: $description=&unescape($description);
4359: } else {
4360: $description='.';
4361: }
4362: if (defined($instcodefilter)) {
4363: $instcodefilter=&unescape($instcodefilter);
4364: } else {
4365: $instcodefilter='.';
4366: }
4367: my ($ownerunamefilter,$ownerdomfilter);
4368: if (defined($ownerfilter)) {
4369: $ownerfilter=&unescape($ownerfilter);
4370: if ($ownerfilter ne '.' && defined($ownerfilter)) {
4371: if ($ownerfilter =~ /^([^:]*):([^:]*)$/) {
4372: $ownerunamefilter = $1;
4373: $ownerdomfilter = $2;
4374: } else {
4375: $ownerunamefilter = $ownerfilter;
4376: $ownerdomfilter = '';
4377: }
4378: }
4379: } else {
4380: $ownerfilter='.';
4381: }
4382:
4383: if (defined($coursefilter)) {
4384: $coursefilter=&unescape($coursefilter);
4385: } else {
4386: $coursefilter='.';
4387: }
4388: if (defined($typefilter)) {
4389: $typefilter=&unescape($typefilter);
4390: } else {
4391: $typefilter='.';
4392: }
4393: if (defined($regexp_ok)) {
4394: $regexp_ok=&unescape($regexp_ok);
4395: }
4396: if (defined($catfilter)) {
4397: $catfilter=&unescape($catfilter);
4398: }
4399: if (defined($cloner)) {
4400: $cloner = &unescape($cloner);
4401: ($cloneruname,$clonerudom) = ($cloner =~ /^($LONCAPA::match_username):($LONCAPA::match_domain)$/);
4402: }
4403: if (defined($cc_clone_list)) {
4404: $cc_clone_list = &unescape($cc_clone_list);
4405: my @cc_cloners = split('&',$cc_clone_list);
4406: foreach my $cid (@cc_cloners) {
4407: my ($clonedom,$clonenum) = split(':',$cid);
4408: next if ($clonedom ne $udom);
4409: $cc_clone{$clonedom.'_'.$clonenum} = 1;
4410: }
4411: }
4412: if ($createdbefore ne '') {
4413: $createdbefore = &unescape($createdbefore);
4414: } else {
4415: $createdbefore = 0;
4416: }
4417: if ($createdafter ne '') {
4418: $createdafter = &unescape($createdafter);
4419: } else {
4420: $createdafter = 0;
4421: }
4422: if ($creationcontext ne '') {
4423: $creationcontext = &unescape($creationcontext);
4424: } else {
4425: $creationcontext = '.';
4426: }
4427: unless ($hasuniquecode) {
4428: $hasuniquecode = '.';
4429: }
4430: my $unpack = 1;
4431: if ($description eq '.' && $instcodefilter eq '.' && $ownerfilter eq '.' &&
4432: $typefilter eq '.') {
4433: $unpack = 0;
4434: }
4435: if (!defined($since)) { $since=0; }
4436: my $qresult='';
4437: my $hashref = &tie_domain_hash($udom, "nohist_courseids", &GDBM_WRCREAT());
4438: if ($hashref) {
4439: while (my ($key,$value) = each(%$hashref)) {
4440: my ($unesc_key,$lasttime_key,$lasttime,$is_hash,%val,
4441: %unesc_val,$selfenroll_end,$selfenroll_types,$created,
4442: $context);
4443: $unesc_key = &unescape($key);
4444: if ($unesc_key =~ /^lasttime:/) {
4445: next;
4446: } else {
4447: $lasttime_key = &escape('lasttime:'.$unesc_key);
4448: }
4449: if ($hashref->{$lasttime_key} ne '') {
4450: $lasttime = $hashref->{$lasttime_key};
4451: next if ($lasttime<$since);
4452: }
4453: my ($canclone,$valchange);
4454: my $items = &Apache::lonnet::thaw_unescape($value);
4455: if (ref($items) eq 'HASH') {
4456: if ($hashref->{$lasttime_key} eq '') {
4457: next if ($since > 1);
4458: }
4459: $is_hash = 1;
4460: if ($domcloner) {
4461: $canclone = 1;
4462: } elsif (defined($clonerudom)) {
4463: if ($items->{'cloners'}) {
4464: my @cloneable = split(',',$items->{'cloners'});
4465: if (@cloneable) {
4466: if (grep(/^\*$/,@cloneable)) {
4467: $canclone = 1;
4468: } elsif (grep(/^\*:\Q$clonerudom\E$/,@cloneable)) {
4469: $canclone = 1;
4470: } elsif (grep(/^\Q$cloneruname\E:\Q$clonerudom\E$/,@cloneable)) {
4471: $canclone = 1;
4472: }
4473: }
4474: unless ($canclone) {
4475: if ($cloneruname ne '' && $clonerudom ne '') {
4476: if ($cc_clone{$unesc_key}) {
4477: $canclone = 1;
4478: $items->{'cloners'} .= ','.$cloneruname.':'.
4479: $clonerudom;
4480: $valchange = 1;
4481: }
4482: }
4483: }
4484: } elsif (defined($cloneruname)) {
4485: if ($cc_clone{$unesc_key}) {
4486: $canclone = 1;
4487: $items->{'cloners'} = $cloneruname.':'.$clonerudom;
4488: $valchange = 1;
4489: }
4490: unless ($canclone) {
4491: if ($items->{'owner'} =~ /:/) {
4492: if ($items->{'owner'} eq $cloner) {
4493: $canclone = 1;
4494: }
4495: } elsif ($cloner eq $items->{'owner'}.':'.$udom) {
4496: $canclone = 1;
4497: }
4498: if ($canclone) {
4499: $items->{'cloners'} = $cloneruname.':'.$clonerudom;
4500: $valchange = 1;
4501: }
4502: }
4503: }
4504: }
4505: if ($unpack || !$rtn_as_hash) {
4506: $unesc_val{'descr'} = $items->{'description'};
4507: $unesc_val{'inst_code'} = $items->{'inst_code'};
4508: $unesc_val{'owner'} = $items->{'owner'};
4509: $unesc_val{'type'} = $items->{'type'};
4510: $unesc_val{'cloners'} = $items->{'cloners'};
4511: $unesc_val{'created'} = $items->{'created'};
4512: $unesc_val{'context'} = $items->{'context'};
4513: }
4514: $selfenroll_types = $items->{'selfenroll_types'};
4515: $selfenroll_end = $items->{'selfenroll_end_date'};
4516: $created = $items->{'created'};
4517: $context = $items->{'context'};
4518: if ($hasuniquecode ne '.') {
4519: next unless ($items->{'uniquecode'});
4520: }
4521: if ($selfenrollonly) {
4522: next if (!$selfenroll_types);
4523: if (($selfenroll_end > 0) && ($selfenroll_end <= $now)) {
4524: next;
4525: }
4526: }
4527: if ($creationcontext ne '.') {
4528: next if (($context ne '') && ($context ne $creationcontext));
4529: }
4530: if ($createdbefore > 0) {
4531: next if (($created eq '') || ($created > $createdbefore));
4532: }
4533: if ($createdafter > 0) {
4534: next if (($created eq '') || ($created <= $createdafter));
4535: }
4536: if ($catfilter ne '') {
4537: next if ($items->{'categories'} eq '');
4538: my @categories = split('&',$items->{'categories'});
4539: next if (@categories == 0);
4540: my @subcats = split('&',$catfilter);
4541: my $matchcat = 0;
4542: foreach my $cat (@categories) {
4543: if (grep(/^\Q$cat\E$/,@subcats)) {
4544: $matchcat = 1;
4545: last;
4546: }
4547: }
4548: next if (!$matchcat);
4549: }
4550: if ($caller eq 'coursecatalog') {
4551: if ($items->{'hidefromcat'} eq 'yes') {
4552: next if !$showhidden;
4553: }
4554: }
4555: } else {
4556: next if ($catfilter ne '');
4557: next if ($selfenrollonly);
4558: next if ($createdbefore || $createdafter);
4559: next if ($creationcontext ne '.');
4560: if ((defined($clonerudom)) && (defined($cloneruname))) {
4561: if ($cc_clone{$unesc_key}) {
4562: $canclone = 1;
4563: $val{'cloners'} = &escape($cloneruname.':'.$clonerudom);
4564: }
4565: }
4566: $is_hash = 0;
4567: my @courseitems = split(/:/,$value);
4568: $lasttime = pop(@courseitems);
4569: if ($hashref->{$lasttime_key} eq '') {
4570: next if ($lasttime<$since);
4571: }
4572: ($val{'descr'},$val{'inst_code'},$val{'owner'},$val{'type'}) = @courseitems;
4573: }
4574: if ($cloneonly) {
4575: next unless ($canclone);
4576: }
4577: my $match = 1;
4578: if ($description ne '.') {
4579: if (!$is_hash) {
4580: $unesc_val{'descr'} = &unescape($val{'descr'});
4581: }
4582: if (eval{$unesc_val{'descr'} !~ /\Q$description\E/i}) {
4583: $match = 0;
4584: }
4585: }
4586: if ($instcodefilter ne '.') {
4587: if (!$is_hash) {
4588: $unesc_val{'inst_code'} = &unescape($val{'inst_code'});
4589: }
4590: if ($regexp_ok == 1) {
4591: if (eval{$unesc_val{'inst_code'} !~ /$instcodefilter/}) {
4592: $match = 0;
4593: }
4594: } elsif ($regexp_ok == -1) {
4595: if (eval{$unesc_val{'inst_code'} =~ /$instcodefilter/}) {
4596: $match = 0;
4597: }
4598: } else {
4599: if (eval{$unesc_val{'inst_code'} !~ /\Q$instcodefilter\E/i}) {
4600: $match = 0;
4601: }
4602: }
4603: }
4604: if ($ownerfilter ne '.') {
4605: if (!$is_hash) {
4606: $unesc_val{'owner'} = &unescape($val{'owner'});
4607: }
4608: if (($ownerunamefilter ne '') && ($ownerdomfilter ne '')) {
4609: if ($unesc_val{'owner'} =~ /:/) {
4610: if (eval{$unesc_val{'owner'} !~
4611: /\Q$ownerunamefilter\E:\Q$ownerdomfilter\E$/i}) {
4612: $match = 0;
4613: }
4614: } else {
4615: if (eval{$unesc_val{'owner'} !~ /\Q$ownerunamefilter\E/i}) {
4616: $match = 0;
4617: }
4618: }
4619: } elsif ($ownerunamefilter ne '') {
4620: if ($unesc_val{'owner'} =~ /:/) {
4621: if (eval{$unesc_val{'owner'} !~ /\Q$ownerunamefilter\E:[^:]+$/i}) {
4622: $match = 0;
4623: }
4624: } else {
4625: if (eval{$unesc_val{'owner'} !~ /\Q$ownerunamefilter\E/i}) {
4626: $match = 0;
4627: }
4628: }
4629: } elsif ($ownerdomfilter ne '') {
4630: if ($unesc_val{'owner'} =~ /:/) {
4631: if (eval{$unesc_val{'owner'} !~ /^[^:]+:\Q$ownerdomfilter\E/}) {
4632: $match = 0;
4633: }
4634: } else {
4635: if ($ownerdomfilter ne $udom) {
4636: $match = 0;
4637: }
4638: }
4639: }
4640: }
4641: if ($coursefilter ne '.') {
4642: if (eval{$unesc_key !~ /^$udom(_)\Q$coursefilter\E$/}) {
4643: $match = 0;
4644: }
4645: }
4646: if ($typefilter ne '.') {
4647: if (!$is_hash) {
4648: $unesc_val{'type'} = &unescape($val{'type'});
4649: }
4650: if ($unesc_val{'type'} eq '') {
4651: if ($typefilter ne 'Course') {
4652: $match = 0;
4653: }
4654: } else {
4655: if (eval{$unesc_val{'type'} !~ /^\Q$typefilter\E$/}) {
4656: $match = 0;
4657: }
4658: }
4659: }
4660: if ($match == 1) {
4661: if ($rtn_as_hash) {
4662: if ($is_hash) {
4663: if ($valchange) {
4664: my $newvalue = &Apache::lonnet::freeze_escape($items);
4665: $qresult.=$key.'='.$newvalue.'&';
4666: } else {
4667: $qresult.=$key.'='.$value.'&';
4668: }
4669: } else {
4670: my %rtnhash = ( 'description' => &unescape($val{'descr'}),
4671: 'inst_code' => &unescape($val{'inst_code'}),
4672: 'owner' => &unescape($val{'owner'}),
4673: 'type' => &unescape($val{'type'}),
4674: 'cloners' => &unescape($val{'cloners'}),
4675: );
4676: my $items = &Apache::lonnet::freeze_escape(\%rtnhash);
4677: $qresult.=$key.'='.$items.'&';
4678: }
4679: } else {
4680: if ($is_hash) {
4681: $qresult .= $key.'='.&escape($unesc_val{'descr'}).':'.
4682: &escape($unesc_val{'inst_code'}).':'.
4683: &escape($unesc_val{'owner'}).'&';
4684: } else {
4685: $qresult .= $key.'='.$val{'descr'}.':'.$val{'inst_code'}.
4686: ':'.$val{'owner'}.'&';
4687: }
4688: }
4689: }
4690: }
4691: if (&untie_domain_hash($hashref)) {
4692: chop($qresult);
4693: &Reply($client, \$qresult, $userinput);
4694: } else {
4695: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4696: "while attempting courseiddump\n", $userinput);
4697: }
4698: } else {
4699: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
4700: "while attempting courseiddump\n", $userinput);
4701: }
4702: return 1;
4703: }
4704: ®ister_handler("courseiddump", \&dump_course_id_handler, 0, 1, 0);
4705:
4706: sub course_lastaccess_handler {
4707: my ($cmd, $tail, $client) = @_;
4708: my $userinput = "$cmd:$tail";
4709: my ($cdom,$cnum) = split(':',$tail);
4710: my (%lastaccess,$qresult);
4711: my $hashref = &tie_domain_hash($cdom, "nohist_courseids", &GDBM_WRCREAT());
4712: if ($hashref) {
4713: while (my ($key,$value) = each(%$hashref)) {
4714: my ($unesc_key,$lasttime);
4715: $unesc_key = &unescape($key);
4716: if ($cnum) {
4717: next unless ($unesc_key =~ /\Q$cdom\E_\Q$cnum\E$/);
4718: }
4719: if ($unesc_key =~ /^lasttime:($LONCAPA::match_domain\_$LONCAPA::match_courseid)/) {
4720: $lastaccess{$1} = $value;
4721: } else {
4722: my $items = &Apache::lonnet::thaw_unescape($value);
4723: if (ref($items) eq 'HASH') {
4724: unless ($lastaccess{$unesc_key}) {
4725: $lastaccess{$unesc_key} = '';
4726: }
4727: } else {
4728: my @courseitems = split(':',$value);
4729: $lastaccess{$unesc_key} = pop(@courseitems);
4730: }
4731: }
4732: }
4733: foreach my $cid (sort(keys(%lastaccess))) {
4734: $qresult.=&escape($cid).'='.$lastaccess{$cid}.'&';
4735: }
4736: if (&untie_domain_hash($hashref)) {
4737: if ($qresult) {
4738: chop($qresult);
4739: }
4740: &Reply($client, \$qresult, $userinput);
4741: } else {
4742: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4743: "while attempting lastacourseaccess\n", $userinput);
4744: }
4745: } else {
4746: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
4747: "while attempting lastcourseaccess\n", $userinput);
4748: }
4749: return 1;
4750: }
4751: ®ister_handler("courselastaccess",\&course_lastaccess_handler, 0, 1, 0);
4752:
4753: #
4754: # Puts an unencrypted entry in a namespace db file at the domain level
4755: #
4756: # Parameters:
4757: # $cmd - The command that got us here.
4758: # $tail - Tail of the command (remaining parameters).
4759: # $client - File descriptor connected to client.
4760: # Returns
4761: # 0 - Requested to exit, caller should shut down.
4762: # 1 - Continue processing.
4763: # Side effects:
4764: # reply is written to $client.
4765: #
4766: sub put_domain_handler {
4767: my ($cmd,$tail,$client) = @_;
4768:
4769: my $userinput = "$cmd:$tail";
4770:
4771: my ($udom,$namespace,$what) =split(/:/,$tail,3);
4772: chomp($what);
4773: my @pairs=split(/\&/,$what);
4774: my $hashref = &tie_domain_hash($udom, "$namespace", &GDBM_WRCREAT(),
4775: "P", $what);
4776: if ($hashref) {
4777: foreach my $pair (@pairs) {
4778: my ($key,$value)=split(/=/,$pair);
4779: $hashref->{$key}=$value;
4780: }
4781: if (&untie_domain_hash($hashref)) {
4782: &Reply($client, "ok\n", $userinput);
4783: } else {
4784: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4785: "while attempting putdom\n", $userinput);
4786: }
4787: } else {
4788: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
4789: "while attempting putdom\n", $userinput);
4790: }
4791:
4792: return 1;
4793: }
4794: ®ister_handler("putdom", \&put_domain_handler, 0, 1, 0);
4795:
4796: # Updates one or more entries in clickers.db file at the domain level
4797: #
4798: # Parameters:
4799: # $cmd - The command that got us here.
4800: # $tail - Tail of the command (remaining parameters).
4801: # In this case a colon separated list containing:
4802: # (a) the domain for which we are updating the entries,
4803: # (b) the action required -- add or del -- and
4804: # (c) a &-separated list of entries to add or delete.
4805: # $client - File descriptor connected to client.
4806: # Returns
4807: # 1 - Continue processing.
4808: # 0 - Requested to exit, caller should shut down.
4809: # Side effects:
4810: # reply is written to $client.
4811: #
4812:
4813:
4814: sub update_clickers {
4815: my ($cmd, $tail, $client) = @_;
4816:
4817: my $userinput = "$cmd:$tail";
4818: my ($udom,$action,$what) =split(/:/,$tail,3);
4819: chomp($what);
4820:
4821: my $hashref = &tie_domain_hash($udom, "clickers", &GDBM_WRCREAT(),
4822: "U","$action:$what");
4823:
4824: if (!$hashref) {
4825: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
4826: "while attempting updateclickers\n", $userinput);
4827: return 1;
4828: }
4829:
4830: my @pairs=split(/\&/,$what);
4831: foreach my $pair (@pairs) {
4832: my ($key,$value)=split(/=/,$pair);
4833: if ($action eq 'add') {
4834: if (exists($hashref->{$key})) {
4835: my @newvals = split(/,/,&unescape($value));
4836: my @currvals = split(/,/,&unescape($hashref->{$key}));
4837: my @merged = sort(keys(%{{map { $_ => 1 } (@newvals,@currvals)}}));
4838: $hashref->{$key}=&escape(join(',',@merged));
4839: } else {
4840: $hashref->{$key}=$value;
4841: }
4842: } elsif ($action eq 'del') {
4843: if (exists($hashref->{$key})) {
4844: my %current;
4845: map { $current{$_} = 1; } split(/,/,&unescape($hashref->{$key}));
4846: map { delete($current{$_}); } split(/,/,&unescape($value));
4847: if (keys(%current)) {
4848: $hashref->{$key}=&escape(join(',',sort(keys(%current))));
4849: } else {
4850: delete($hashref->{$key});
4851: }
4852: }
4853: }
4854: }
4855: if (&untie_user_hash($hashref)) {
4856: &Reply( $client, "ok\n", $userinput);
4857: } else {
4858: &Failure($client, "error: ".($!+0)." untie(GDBM) failed ".
4859: "while attempting put\n",
4860: $userinput);
4861: }
4862: return 1;
4863: }
4864: ®ister_handler("updateclickers", \&update_clickers, 0, 1, 0);
4865:
4866:
4867: # Deletes one or more entries in a namespace db file at the domain level
4868: #
4869: # Parameters:
4870: # $cmd - The command that got us here.
4871: # $tail - Tail of the command (remaining parameters).
4872: # In this case a colon separated list containing:
4873: # (a) the domain for which we are deleting the entries,
4874: # (b) &-separated list of keys to delete.
4875: # $client - File descriptor connected to client.
4876: # Returns
4877: # 1 - Continue processing.
4878: # 0 - Requested to exit, caller should shut down.
4879: # Side effects:
4880: # reply is written to $client.
4881: #
4882:
4883: sub del_domain_handler {
4884: my ($cmd,$tail,$client) = @_;
4885:
4886: my $userinput = "$cmd:$tail";
4887:
4888: my ($udom,$namespace,$what)=split(/:/,$tail,3);
4889: chomp($what);
4890: my $hashref = &tie_domain_hash($udom,$namespace,&GDBM_WRCREAT(),
4891: "D", $what);
4892: if ($hashref) {
4893: my @keys=split(/\&/,$what);
4894: foreach my $key (@keys) {
4895: delete($hashref->{$key});
4896: }
4897: if (&untie_user_hash($hashref)) {
4898: &Reply($client, "ok\n", $userinput);
4899: } else {
4900: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4901: "while attempting deldom\n", $userinput);
4902: }
4903: } else {
4904: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
4905: "while attempting deldom\n", $userinput);
4906: }
4907: return 1;
4908: }
4909: ®ister_handler("deldom", \&del_domain_handler, 0, 1, 0);
4910:
4911:
4912: # Unencrypted get from the namespace database file at the domain level.
4913: # This function retrieves a keyed item from a specific named database in the
4914: # domain directory.
4915: #
4916: # Parameters:
4917: # $cmd - Command request keyword (get).
4918: # $tail - Tail of the command. This is a colon separated list
4919: # consisting of the domain and the 'namespace'
4920: # which selects the gdbm file to do the lookup in,
4921: # & separated list of keys to lookup. Note that
4922: # the values are returned as an & separated list too.
4923: # $client - File descriptor open on the client.
4924: # Returns:
4925: # 1 - Continue processing.
4926: # 0 - Exit.
4927: # Side effects:
4928: # reply is written to $client.
4929: #
4930:
4931: sub get_domain_handler {
4932: my ($cmd, $tail, $client) = @_;
4933:
4934:
4935: my $userinput = "$cmd:$tail";
4936:
4937: my ($udom,$namespace,$what)=split(/:/,$tail,3);
4938: chomp($what);
4939: if ($namespace =~ /^enc/) {
4940: &Failure( $client, "refused\n", $userinput);
4941: } else {
4942: my @queries=split(/\&/,$what);
4943: my $qresult='';
4944: my $hashref = &tie_domain_hash($udom, "$namespace", &GDBM_READER());
4945: if ($hashref) {
4946: for (my $i=0;$i<=$#queries;$i++) {
4947: $qresult.="$hashref->{$queries[$i]}&";
4948: }
4949: if (&untie_domain_hash($hashref)) {
4950: $qresult=~s/\&$//;
4951: &Reply($client, \$qresult, $userinput);
4952: } else {
4953: &Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ".
4954: "while attempting getdom\n",$userinput);
4955: }
4956: } else {
4957: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
4958: "while attempting getdom\n",$userinput);
4959: }
4960: }
4961:
4962: return 1;
4963: }
4964: ®ister_handler("getdom", \&get_domain_handler, 0, 1, 0);
4965:
4966: sub encrypted_get_domain_handler {
4967: my ($cmd, $tail, $client) = @_;
4968:
4969: my $userinput = "$cmd:$tail";
4970:
4971: my ($udom,$namespace,$what)=split(/:/,$tail,3);
4972: chomp($what);
4973: my @queries=split(/\&/,$what);
4974: my $qresult='';
4975: my $hashref = &tie_domain_hash($udom, "$namespace", &GDBM_READER());
4976: if ($hashref) {
4977: for (my $i=0;$i<=$#queries;$i++) {
4978: $qresult.="$hashref->{$queries[$i]}&";
4979: }
4980: if (&untie_domain_hash($hashref)) {
4981: $qresult=~s/\&$//;
4982: if ($cipher) {
4983: my $cmdlength=length($qresult);
4984: $qresult.=" ";
4985: my $encqresult='';
4986: for (my $encidx=0;$encidx<=$cmdlength;$encidx+=8) {
4987: $encqresult.= unpack("H16",
4988: $cipher->encrypt(substr($qresult,
4989: $encidx,
4990: 8)));
4991: }
4992: &Reply( $client, "enc:$cmdlength:$encqresult\n", $userinput);
4993: } else {
4994: &Failure( $client, "error:no_key\n", $userinput);
4995: }
4996: } else {
4997: &Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ".
4998: "while attempting egetdom\n",$userinput);
4999: }
5000: } else {
5001: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
5002: "while attempting egetdom\n",$userinput);
5003: }
5004: return 1;
5005: }
5006: ®ister_handler("egetdom", \&encrypted_get_domain_handler, 1, 1, 0);
5007:
5008: #
5009: # Puts an id to a domains id database.
5010: #
5011: # Parameters:
5012: # $cmd - The command that triggered us.
5013: # $tail - Remainder of the request other than the command. This is a
5014: # colon separated list containing:
5015: # $domain - The domain for which we are writing the id.
5016: # $pairs - The id info to write... this is and & separated list
5017: # of keyword=value.
5018: # $client - Socket open on the client.
5019: # Returns:
5020: # 1 - Continue processing.
5021: # Side effects:
5022: # reply is written to $client.
5023: #
5024: sub put_id_handler {
5025: my ($cmd,$tail,$client) = @_;
5026:
5027:
5028: my $userinput = "$cmd:$tail";
5029:
5030: my ($udom,$what)=split(/:/,$tail);
5031: chomp($what);
5032: my @pairs=split(/\&/,$what);
5033: my $hashref = &tie_domain_hash($udom, "ids", &GDBM_WRCREAT(),
5034: "P", $what);
5035: if ($hashref) {
5036: foreach my $pair (@pairs) {
5037: my ($key,$value)=split(/=/,$pair);
5038: $hashref->{$key}=$value;
5039: }
5040: if (&untie_domain_hash($hashref)) {
5041: &Reply($client, "ok\n", $userinput);
5042: } else {
5043: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
5044: "while attempting idput\n", $userinput);
5045: }
5046: } else {
5047: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
5048: "while attempting idput\n", $userinput);
5049: }
5050:
5051: return 1;
5052: }
5053: ®ister_handler("idput", \&put_id_handler, 0, 1, 0);
5054:
5055: #
5056: # Retrieves a set of id values from the id database.
5057: # Returns an & separated list of results, one for each requested id to the
5058: # client.
5059: #
5060: # Parameters:
5061: # $cmd - Command keyword that caused us to be dispatched.
5062: # $tail - Tail of the command. Consists of a colon separated:
5063: # domain - the domain whose id table we dump
5064: # ids Consists of an & separated list of
5065: # id keywords whose values will be fetched.
5066: # nonexisting keywords will have an empty value.
5067: # $client - Socket open on the client.
5068: #
5069: # Returns:
5070: # 1 - indicating processing should continue.
5071: # Side effects:
5072: # An & separated list of results is written to $client.
5073: #
5074: sub get_id_handler {
5075: my ($cmd, $tail, $client) = @_;
5076:
5077:
5078: my $userinput = "$client:$tail";
5079:
5080: my ($udom,$what)=split(/:/,$tail);
5081: chomp($what);
5082: my @queries=split(/\&/,$what);
5083: my $qresult='';
5084: my $hashref = &tie_domain_hash($udom, "ids", &GDBM_READER());
5085: if ($hashref) {
5086: for (my $i=0;$i<=$#queries;$i++) {
5087: $qresult.="$hashref->{$queries[$i]}&";
5088: }
5089: if (&untie_domain_hash($hashref)) {
5090: $qresult=~s/\&$//;
5091: &Reply($client, \$qresult, $userinput);
5092: } else {
5093: &Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ".
5094: "while attempting idget\n",$userinput);
5095: }
5096: } else {
5097: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
5098: "while attempting idget\n",$userinput);
5099: }
5100:
5101: return 1;
5102: }
5103: ®ister_handler("idget", \&get_id_handler, 0, 1, 0);
5104:
5105: # Deletes one or more ids in a domain's id database.
5106: #
5107: # Parameters:
5108: # $cmd - Command keyword (iddel).
5109: # $tail - Command tail. In this case a colon
5110: # separated list containing:
5111: # The domain for which we are deleting the id(s).
5112: # &-separated list of id(s) to delete.
5113: # $client - File open on client socket.
5114: # Returns:
5115: # 1 - Continue processing
5116: # 0 - Exit server.
5117: #
5118: #
5119:
5120: sub del_id_handler {
5121: my ($cmd,$tail,$client) = @_;
5122:
5123: my $userinput = "$cmd:$tail";
5124:
5125: my ($udom,$what)=split(/:/,$tail);
5126: chomp($what);
5127: my $hashref = &tie_domain_hash($udom, "ids", &GDBM_WRCREAT(),
5128: "D", $what);
5129: if ($hashref) {
5130: my @keys=split(/\&/,$what);
5131: foreach my $key (@keys) {
5132: delete($hashref->{$key});
5133: }
5134: if (&untie_user_hash($hashref)) {
5135: &Reply($client, "ok\n", $userinput);
5136: } else {
5137: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
5138: "while attempting iddel\n", $userinput);
5139: }
5140: } else {
5141: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
5142: "while attempting iddel\n", $userinput);
5143: }
5144: return 1;
5145: }
5146: ®ister_handler("iddel", \&del_id_handler, 0, 1, 0);
5147:
5148: #
5149: # Puts broadcast e-mail sent by Domain Coordinator in nohist_dcmail database
5150: #
5151: # Parameters
5152: # $cmd - Command keyword that caused us to be dispatched.
5153: # $tail - Tail of the command. Consists of a colon separated:
5154: # domain - the domain whose dcmail we are recording
5155: # email Consists of key=value pair
5156: # where key is unique msgid
5157: # and value is message (in XML)
5158: # $client - Socket open on the client.
5159: #
5160: # Returns:
5161: # 1 - indicating processing should continue.
5162: # Side effects
5163: # reply is written to $client.
5164: #
5165: sub put_dcmail_handler {
5166: my ($cmd,$tail,$client) = @_;
5167: my $userinput = "$cmd:$tail";
5168:
5169:
5170: my ($udom,$what)=split(/:/,$tail);
5171: chomp($what);
5172: my $hashref = &tie_domain_hash($udom, "nohist_dcmail", &GDBM_WRCREAT());
5173: if ($hashref) {
5174: my ($key,$value)=split(/=/,$what);
5175: $hashref->{$key}=$value;
5176: }
5177: if (&untie_domain_hash($hashref)) {
5178: &Reply($client, "ok\n", $userinput);
5179: } else {
5180: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
5181: "while attempting dcmailput\n", $userinput);
5182: }
5183: return 1;
5184: }
5185: ®ister_handler("dcmailput", \&put_dcmail_handler, 0, 1, 0);
5186:
5187: #
5188: # Retrieves broadcast e-mail from nohist_dcmail database
5189: # Returns to client an & separated list of key=value pairs,
5190: # where key is msgid and value is message information.
5191: #
5192: # Parameters
5193: # $cmd - Command keyword that caused us to be dispatched.
5194: # $tail - Tail of the command. Consists of a colon separated:
5195: # domain - the domain whose dcmail table we dump
5196: # startfilter - beginning of time window
5197: # endfilter - end of time window
5198: # sendersfilter - & separated list of username:domain
5199: # for senders to search for.
5200: # $client - Socket open on the client.
5201: #
5202: # Returns:
5203: # 1 - indicating processing should continue.
5204: # Side effects
5205: # reply (& separated list of msgid=messageinfo pairs) is
5206: # written to $client.
5207: #
5208: sub dump_dcmail_handler {
5209: my ($cmd, $tail, $client) = @_;
5210:
5211: my $userinput = "$cmd:$tail";
5212: my ($udom,$startfilter,$endfilter,$sendersfilter) = split(/:/,$tail);
5213: chomp($sendersfilter);
5214: my @senders = ();
5215: if (defined($startfilter)) {
5216: $startfilter=&unescape($startfilter);
5217: } else {
5218: $startfilter='.';
5219: }
5220: if (defined($endfilter)) {
5221: $endfilter=&unescape($endfilter);
5222: } else {
5223: $endfilter='.';
5224: }
5225: if (defined($sendersfilter)) {
5226: $sendersfilter=&unescape($sendersfilter);
5227: @senders = map { &unescape($_) } split(/\&/,$sendersfilter);
5228: }
5229:
5230: my $qresult='';
5231: my $hashref = &tie_domain_hash($udom, "nohist_dcmail", &GDBM_WRCREAT());
5232: if ($hashref) {
5233: while (my ($key,$value) = each(%$hashref)) {
5234: my $match = 1;
5235: my ($timestamp,$subj,$uname,$udom) =
5236: split(/:/,&unescape(&unescape($key)),5); # yes, twice really
5237: $subj = &unescape($subj);
5238: unless ($startfilter eq '.' || !defined($startfilter)) {
5239: if ($timestamp < $startfilter) {
5240: $match = 0;
5241: }
5242: }
5243: unless ($endfilter eq '.' || !defined($endfilter)) {
5244: if ($timestamp > $endfilter) {
5245: $match = 0;
5246: }
5247: }
5248: unless (@senders < 1) {
5249: unless (grep/^$uname:$udom$/,@senders) {
5250: $match = 0;
5251: }
5252: }
5253: if ($match == 1) {
5254: $qresult.=$key.'='.$value.'&';
5255: }
5256: }
5257: if (&untie_domain_hash($hashref)) {
5258: chop($qresult);
5259: &Reply($client, \$qresult, $userinput);
5260: } else {
5261: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
5262: "while attempting dcmaildump\n", $userinput);
5263: }
5264: } else {
5265: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
5266: "while attempting dcmaildump\n", $userinput);
5267: }
5268: return 1;
5269: }
5270:
5271: ®ister_handler("dcmaildump", \&dump_dcmail_handler, 0, 1, 0);
5272:
5273: #
5274: # Puts domain roles in nohist_domainroles database
5275: #
5276: # Parameters
5277: # $cmd - Command keyword that caused us to be dispatched.
5278: # $tail - Tail of the command. Consists of a colon separated:
5279: # domain - the domain whose roles we are recording
5280: # role - Consists of key=value pair
5281: # where key is unique role
5282: # and value is start/end date information
5283: # $client - Socket open on the client.
5284: #
5285: # Returns:
5286: # 1 - indicating processing should continue.
5287: # Side effects
5288: # reply is written to $client.
5289: #
5290:
5291: sub put_domainroles_handler {
5292: my ($cmd,$tail,$client) = @_;
5293:
5294: my $userinput = "$cmd:$tail";
5295: my ($udom,$what)=split(/:/,$tail);
5296: chomp($what);
5297: my @pairs=split(/\&/,$what);
5298: my $hashref = &tie_domain_hash($udom, "nohist_domainroles", &GDBM_WRCREAT());
5299: if ($hashref) {
5300: foreach my $pair (@pairs) {
5301: my ($key,$value)=split(/=/,$pair);
5302: $hashref->{$key}=$value;
5303: }
5304: if (&untie_domain_hash($hashref)) {
5305: &Reply($client, "ok\n", $userinput);
5306: } else {
5307: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
5308: "while attempting domroleput\n", $userinput);
5309: }
5310: } else {
5311: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
5312: "while attempting domroleput\n", $userinput);
5313: }
5314:
5315: return 1;
5316: }
5317:
5318: ®ister_handler("domroleput", \&put_domainroles_handler, 0, 1, 0);
5319:
5320: #
5321: # Retrieves domain roles from nohist_domainroles database
5322: # Returns to client an & separated list of key=value pairs,
5323: # where key is role and value is start and end date information.
5324: #
5325: # Parameters
5326: # $cmd - Command keyword that caused us to be dispatched.
5327: # $tail - Tail of the command. Consists of a colon separated:
5328: # domain - the domain whose domain roles table we dump
5329: # $client - Socket open on the client.
5330: #
5331: # Returns:
5332: # 1 - indicating processing should continue.
5333: # Side effects
5334: # reply (& separated list of role=start/end info pairs) is
5335: # written to $client.
5336: #
5337: sub dump_domainroles_handler {
5338: my ($cmd, $tail, $client) = @_;
5339:
5340: my $userinput = "$cmd:$tail";
5341: my ($udom,$startfilter,$endfilter,$rolesfilter) = split(/:/,$tail);
5342: chomp($rolesfilter);
5343: my @roles = ();
5344: if (defined($startfilter)) {
5345: $startfilter=&unescape($startfilter);
5346: } else {
5347: $startfilter='.';
5348: }
5349: if (defined($endfilter)) {
5350: $endfilter=&unescape($endfilter);
5351: } else {
5352: $endfilter='.';
5353: }
5354: if (defined($rolesfilter)) {
5355: $rolesfilter=&unescape($rolesfilter);
5356: @roles = split(/\&/,$rolesfilter);
5357: }
5358:
5359: my $hashref = &tie_domain_hash($udom, "nohist_domainroles", &GDBM_WRCREAT());
5360: if ($hashref) {
5361: my $qresult = '';
5362: while (my ($key,$value) = each(%$hashref)) {
5363: my $match = 1;
5364: my ($end,$start) = split(/:/,&unescape($value));
5365: my ($trole,$uname,$udom,$runame,$rudom,$rsec) = split(/:/,&unescape($key));
5366: unless (@roles < 1) {
5367: unless (grep/^\Q$trole\E$/,@roles) {
5368: $match = 0;
5369: next;
5370: }
5371: }
5372: unless ($startfilter eq '.' || !defined($startfilter)) {
5373: if ((defined($start)) && ($start >= $startfilter)) {
5374: $match = 0;
5375: next;
5376: }
5377: }
5378: unless ($endfilter eq '.' || !defined($endfilter)) {
5379: if ((defined($end)) && (($end > 0) && ($end <= $endfilter))) {
5380: $match = 0;
5381: next;
5382: }
5383: }
5384: if ($match == 1) {
5385: $qresult.=$key.'='.$value.'&';
5386: }
5387: }
5388: if (&untie_domain_hash($hashref)) {
5389: chop($qresult);
5390: &Reply($client, \$qresult, $userinput);
5391: } else {
5392: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
5393: "while attempting domrolesdump\n", $userinput);
5394: }
5395: } else {
5396: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
5397: "while attempting domrolesdump\n", $userinput);
5398: }
5399: return 1;
5400: }
5401:
5402: ®ister_handler("domrolesdump", \&dump_domainroles_handler, 0, 1, 0);
5403:
5404:
5405: # Process the tmpput command I'm not sure what this does.. Seems to
5406: # create a file in the lonDaemons/tmp directory of the form $id.tmp
5407: # where Id is the client's ip concatenated with a sequence number.
5408: # The file will contain some value that is passed in. Is this e.g.
5409: # a login token?
5410: #
5411: # Parameters:
5412: # $cmd - The command that got us dispatched.
5413: # $tail - The remainder of the request following $cmd:
5414: # In this case this will be the contents of the file.
5415: # $client - Socket connected to the client.
5416: # Returns:
5417: # 1 indicating processing can continue.
5418: # Side effects:
5419: # A file is created in the local filesystem.
5420: # A reply is sent to the client.
5421: sub tmp_put_handler {
5422: my ($cmd, $what, $client) = @_;
5423:
5424: my $userinput = "$cmd:$what"; # Reconstruct for logging.
5425:
5426: my ($record,$context) = split(/:/,$what);
5427: if ($context ne '') {
5428: chomp($context);
5429: $context = &unescape($context);
5430: }
5431: my ($id,$store);
5432: $tmpsnum++;
5433: if (($context eq 'resetpw') || ($context eq 'createaccount')) {
5434: $id = &md5_hex(&md5_hex(time.{}.rand().$$));
5435: } else {
5436: $id = $$.'_'.$clientip.'_'.$tmpsnum;
5437: }
5438: $id=~s/\W/\_/g;
5439: $record=~s/\n//g;
5440: my $execdir=$perlvar{'lonDaemons'};
5441: if ($store=IO::File->new(">$execdir/tmp/$id.tmp")) {
5442: print $store $record;
5443: close $store;
5444: &Reply($client, \$id, $userinput);
5445: } else {
5446: &Failure( $client, "error: ".($!+0)."IO::File->new Failed ".
5447: "while attempting tmpput\n", $userinput);
5448: }
5449: return 1;
5450:
5451: }
5452: ®ister_handler("tmpput", \&tmp_put_handler, 0, 1, 0);
5453:
5454: # Processes the tmpget command. This command returns the contents
5455: # of a temporary resource file(?) created via tmpput.
5456: #
5457: # Paramters:
5458: # $cmd - Command that got us dispatched.
5459: # $id - Tail of the command, contain the id of the resource
5460: # we want to fetch.
5461: # $client - socket open on the client.
5462: # Return:
5463: # 1 - Inidcating processing can continue.
5464: # Side effects:
5465: # A reply is sent to the client.
5466: #
5467: sub tmp_get_handler {
5468: my ($cmd, $id, $client) = @_;
5469:
5470: my $userinput = "$cmd:$id";
5471:
5472:
5473: $id=~s/\W/\_/g;
5474: my $store;
5475: my $execdir=$perlvar{'lonDaemons'};
5476: if ($store=IO::File->new("$execdir/tmp/$id.tmp")) {
5477: my $reply=<$store>;
5478: &Reply( $client, \$reply, $userinput);
5479: close $store;
5480: } else {
5481: &Failure( $client, "error: ".($!+0)."IO::File->new Failed ".
5482: "while attempting tmpget\n", $userinput);
5483: }
5484:
5485: return 1;
5486: }
5487: ®ister_handler("tmpget", \&tmp_get_handler, 0, 1, 0);
5488:
5489: #
5490: # Process the tmpdel command. This command deletes a temp resource
5491: # created by the tmpput command.
5492: #
5493: # Parameters:
5494: # $cmd - Command that got us here.
5495: # $id - Id of the temporary resource created.
5496: # $client - socket open on the client process.
5497: #
5498: # Returns:
5499: # 1 - Indicating processing should continue.
5500: # Side Effects:
5501: # A file is deleted
5502: # A reply is sent to the client.
5503: sub tmp_del_handler {
5504: my ($cmd, $id, $client) = @_;
5505:
5506: my $userinput= "$cmd:$id";
5507:
5508: chomp($id);
5509: $id=~s/\W/\_/g;
5510: my $execdir=$perlvar{'lonDaemons'};
5511: if (unlink("$execdir/tmp/$id.tmp")) {
5512: &Reply($client, "ok\n", $userinput);
5513: } else {
5514: &Failure( $client, "error: ".($!+0)."Unlink tmp Failed ".
5515: "while attempting tmpdel\n", $userinput);
5516: }
5517:
5518: return 1;
5519:
5520: }
5521: ®ister_handler("tmpdel", \&tmp_del_handler, 0, 1, 0);
5522:
5523: #
5524: # Processes the setannounce command. This command
5525: # creates a file named announce.txt in the top directory of
5526: # the documentn root and sets its contents. The announce.txt file is
5527: # printed in its entirety at the LonCAPA login page. Note:
5528: # once the announcement.txt fileis created it cannot be deleted.
5529: # However, setting the contents of the file to empty removes the
5530: # announcement from the login page of loncapa so who cares.
5531: #
5532: # Parameters:
5533: # $cmd - The command that got us dispatched.
5534: # $announcement - The text of the announcement.
5535: # $client - Socket open on the client process.
5536: # Retunrns:
5537: # 1 - Indicating request processing should continue
5538: # Side Effects:
5539: # The file {DocRoot}/announcement.txt is created.
5540: # A reply is sent to $client.
5541: #
5542: sub set_announce_handler {
5543: my ($cmd, $announcement, $client) = @_;
5544:
5545: my $userinput = "$cmd:$announcement";
5546:
5547: chomp($announcement);
5548: $announcement=&unescape($announcement);
5549: if (my $store=IO::File->new('>'.$perlvar{'lonDocRoot'}.
5550: '/announcement.txt')) {
5551: print $store $announcement;
5552: close $store;
5553: &Reply($client, "ok\n", $userinput);
5554: } else {
5555: &Failure($client, "error: ".($!+0)."\n", $userinput);
5556: }
5557:
5558: return 1;
5559: }
5560: ®ister_handler("setannounce", \&set_announce_handler, 0, 1, 0);
5561:
5562: #
5563: # Return the version of the daemon. This can be used to determine
5564: # the compatibility of cross version installations or, alternatively to
5565: # simply know who's out of date and who isn't. Note that the version
5566: # is returned concatenated with the tail.
5567: # Parameters:
5568: # $cmd - the request that dispatched to us.
5569: # $tail - Tail of the request (client's version?).
5570: # $client - Socket open on the client.
5571: #Returns:
5572: # 1 - continue processing requests.
5573: # Side Effects:
5574: # Replies with version to $client.
5575: sub get_version_handler {
5576: my ($cmd, $tail, $client) = @_;
5577:
5578: my $userinput = $cmd.$tail;
5579:
5580: &Reply($client, &version($userinput)."\n", $userinput);
5581:
5582:
5583: return 1;
5584: }
5585: ®ister_handler("version", \&get_version_handler, 0, 1, 0);
5586:
5587: # Set the current host and domain. This is used to support
5588: # multihomed systems. Each IP of the system, or even separate daemons
5589: # on the same IP can be treated as handling a separate lonCAPA virtual
5590: # machine. This command selects the virtual lonCAPA. The client always
5591: # knows the right one since it is lonc and it is selecting the domain/system
5592: # from the hosts.tab file.
5593: # Parameters:
5594: # $cmd - Command that dispatched us.
5595: # $tail - Tail of the command (domain/host requested).
5596: # $socket - Socket open on the client.
5597: #
5598: # Returns:
5599: # 1 - Indicates the program should continue to process requests.
5600: # Side-effects:
5601: # The default domain/system context is modified for this daemon.
5602: # a reply is sent to the client.
5603: #
5604: sub set_virtual_host_handler {
5605: my ($cmd, $tail, $socket) = @_;
5606:
5607: my $userinput ="$cmd:$tail";
5608:
5609: &Reply($client, &sethost($userinput)."\n", $userinput);
5610:
5611:
5612: return 1;
5613: }
5614: ®ister_handler("sethost", \&set_virtual_host_handler, 0, 1, 0);
5615:
5616: # Process a request to exit:
5617: # - "bye" is sent to the client.
5618: # - The client socket is shutdown and closed.
5619: # - We indicate to the caller that we should exit.
5620: # Formal Parameters:
5621: # $cmd - The command that got us here.
5622: # $tail - Tail of the command (empty).
5623: # $client - Socket open on the tail.
5624: # Returns:
5625: # 0 - Indicating the program should exit!!
5626: #
5627: sub exit_handler {
5628: my ($cmd, $tail, $client) = @_;
5629:
5630: my $userinput = "$cmd:$tail";
5631:
5632: &logthis("Client $clientip ($clientname) hanging up: $userinput");
5633: &Reply($client, "bye\n", $userinput);
5634: $client->shutdown(2); # shutdown the socket forcibly.
5635: $client->close();
5636:
5637: return 0;
5638: }
5639: ®ister_handler("exit", \&exit_handler, 0,1,1);
5640: ®ister_handler("init", \&exit_handler, 0,1,1);
5641: ®ister_handler("quit", \&exit_handler, 0,1,1);
5642:
5643: # Determine if auto-enrollment is enabled.
5644: # Note that the original had what I believe to be a defect.
5645: # The original returned 0 if the requestor was not a registerd client.
5646: # It should return "refused".
5647: # Formal Parameters:
5648: # $cmd - The command that invoked us.
5649: # $tail - The tail of the command (Extra command parameters.
5650: # $client - The socket open on the client that issued the request.
5651: # Returns:
5652: # 1 - Indicating processing should continue.
5653: #
5654: sub enrollment_enabled_handler {
5655: my ($cmd, $tail, $client) = @_;
5656: my $userinput = $cmd.":".$tail; # For logging purposes.
5657:
5658:
5659: my ($cdom) = split(/:/, $tail, 2); # Domain we're asking about.
5660:
5661: my $outcome = &localenroll::run($cdom);
5662: &Reply($client, \$outcome, $userinput);
5663:
5664: return 1;
5665: }
5666: ®ister_handler("autorun", \&enrollment_enabled_handler, 0, 1, 0);
5667:
5668: #
5669: # Validate an institutional code used for a LON-CAPA course.
5670: #
5671: # Formal Parameters:
5672: # $cmd - The command request that got us dispatched.
5673: # $tail - The tail of the command. In this case,
5674: # this is a colon separated set of words that will be split
5675: # into:
5676: # $dom - The domain for which the check of
5677: # institutional course code will occur.
5678: #
5679: # $instcode - The institutional code for the course
5680: # being requested, or validated for rights
5681: # to request.
5682: #
5683: # $owner - The course requestor (who will be the
5684: # course owner, in the form username:domain
5685: #
5686: # $client - Socket open on the client.
5687: # Returns:
5688: # 1 - Indicating processing should continue.
5689: #
5690: sub validate_instcode_handler {
5691: my ($cmd, $tail, $client) = @_;
5692: my $userinput = "$cmd:$tail";
5693: my ($dom,$instcode,$owner) = split(/:/, $tail);
5694: $instcode = &unescape($instcode);
5695: $owner = &unescape($owner);
5696: my ($outcome,$description,$credits) =
5697: &localenroll::validate_instcode($dom,$instcode,$owner);
5698: my $result = &escape($outcome).'&'.&escape($description).'&'.
5699: &escape($credits);
5700: &Reply($client, \$result, $userinput);
5701:
5702: return 1;
5703: }
5704: ®ister_handler("autovalidateinstcode", \&validate_instcode_handler, 0, 1, 0);
5705:
5706: # Get the official sections for which auto-enrollment is possible.
5707: # Since the admin people won't know about 'unofficial sections'
5708: # we cannot auto-enroll on them.
5709: # Formal Parameters:
5710: # $cmd - The command request that got us dispatched here.
5711: # $tail - The remainder of the request. In our case this
5712: # will be split into:
5713: # $coursecode - The course name from the admin point of view.
5714: # $cdom - The course's domain(?).
5715: # $client - Socket open on the client.
5716: # Returns:
5717: # 1 - Indiciting processing should continue.
5718: #
5719: sub get_sections_handler {
5720: my ($cmd, $tail, $client) = @_;
5721: my $userinput = "$cmd:$tail";
5722:
5723: my ($coursecode, $cdom) = split(/:/, $tail);
5724: my @secs = &localenroll::get_sections($coursecode,$cdom);
5725: my $seclist = &escape(join(':',@secs));
5726:
5727: &Reply($client, \$seclist, $userinput);
5728:
5729:
5730: return 1;
5731: }
5732: ®ister_handler("autogetsections", \&get_sections_handler, 0, 1, 0);
5733:
5734: # Validate the owner of a new course section.
5735: #
5736: # Formal Parameters:
5737: # $cmd - Command that got us dispatched.
5738: # $tail - the remainder of the command. For us this consists of a
5739: # colon separated string containing:
5740: # $inst - Course Id from the institutions point of view.
5741: # $owner - Proposed owner of the course.
5742: # $cdom - Domain of the course (from the institutions
5743: # point of view?)..
5744: # $client - Socket open on the client.
5745: #
5746: # Returns:
5747: # 1 - Processing should continue.
5748: #
5749: sub validate_course_owner_handler {
5750: my ($cmd, $tail, $client) = @_;
5751: my $userinput = "$cmd:$tail";
5752: my ($inst_course_id, $owner, $cdom, $coowners) = split(/:/, $tail);
5753:
5754: $owner = &unescape($owner);
5755: $coowners = &unescape($coowners);
5756: my $outcome = &localenroll::new_course($inst_course_id,$owner,$cdom,$coowners);
5757: &Reply($client, \$outcome, $userinput);
5758:
5759:
5760:
5761: return 1;
5762: }
5763: ®ister_handler("autonewcourse", \&validate_course_owner_handler, 0, 1, 0);
5764:
5765: #
5766: # Validate a course section in the official schedule of classes
5767: # from the institutions point of view (part of autoenrollment).
5768: #
5769: # Formal Parameters:
5770: # $cmd - The command request that got us dispatched.
5771: # $tail - The tail of the command. In this case,
5772: # this is a colon separated set of words that will be split
5773: # into:
5774: # $inst_course_id - The course/section id from the
5775: # institutions point of view.
5776: # $cdom - The domain from the institutions
5777: # point of view.
5778: # $client - Socket open on the client.
5779: # Returns:
5780: # 1 - Indicating processing should continue.
5781: #
5782: sub validate_course_section_handler {
5783: my ($cmd, $tail, $client) = @_;
5784: my $userinput = "$cmd:$tail";
5785: my ($inst_course_id, $cdom) = split(/:/, $tail);
5786:
5787: my $outcome=&localenroll::validate_courseID($inst_course_id,$cdom);
5788: &Reply($client, \$outcome, $userinput);
5789:
5790:
5791: return 1;
5792: }
5793: ®ister_handler("autovalidatecourse", \&validate_course_section_handler, 0, 1, 0);
5794:
5795: #
5796: # Validate course owner's access to enrollment data for specific class section.
5797: #
5798: #
5799: # Formal Parameters:
5800: # $cmd - The command request that got us dispatched.
5801: # $tail - The tail of the command. In this case this is a colon separated
5802: # set of values that will be split into:
5803: # $inst_class - Institutional code for the specific class section
5804: # $ownerlist - An escaped comma-separated list of username:domain
5805: # of the course owner, and co-owner(s).
5806: # $cdom - The domain of the course from the institution's
5807: # point of view.
5808: # $client - The socket open on the client.
5809: # Returns:
5810: # 1 - continue processing.
5811: #
5812:
5813: sub validate_class_access_handler {
5814: my ($cmd, $tail, $client) = @_;
5815: my $userinput = "$cmd:$tail";
5816: my ($inst_class,$ownerlist,$cdom) = split(/:/, $tail);
5817: my $owners = &unescape($ownerlist);
5818: my $outcome;
5819: eval {
5820: local($SIG{__DIE__})='DEFAULT';
5821: $outcome=&localenroll::check_section($inst_class,$owners,$cdom);
5822: };
5823: &Reply($client,\$outcome, $userinput);
5824:
5825: return 1;
5826: }
5827: ®ister_handler("autovalidateclass_sec", \&validate_class_access_handler, 0, 1, 0);
5828:
5829: #
5830: # Validate course owner or co-owners(s) access to enrollment data for all sections
5831: # and crosslistings for a particular course.
5832: #
5833: #
5834: # Formal Parameters:
5835: # $cmd - The command request that got us dispatched.
5836: # $tail - The tail of the command. In this case this is a colon separated
5837: # set of values that will be split into:
5838: # $ownerlist - An escaped comma-separated list of username:domain
5839: # of the course owner, and co-owner(s).
5840: # $cdom - The domain of the course from the institution's
5841: # point of view.
5842: # $classes - Frozen hash of institutional course sections and
5843: # crosslistings.
5844: # $client - The socket open on the client.
5845: # Returns:
5846: # 1 - continue processing.
5847: #
5848:
5849: sub validate_classes_handler {
5850: my ($cmd, $tail, $client) = @_;
5851: my $userinput = "$cmd:$tail";
5852: my ($ownerlist,$cdom,$classes) = split(/:/, $tail);
5853: my $classesref = &Apache::lonnet::thaw_unescape($classes);
5854: my $owners = &unescape($ownerlist);
5855: my $result;
5856: eval {
5857: local($SIG{__DIE__})='DEFAULT';
5858: my %validations;
5859: my $response = &localenroll::check_instclasses($owners,$cdom,$classesref,
5860: \%validations);
5861: if ($response eq 'ok') {
5862: foreach my $key (keys(%validations)) {
5863: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($validations{$key}).'&';
5864: }
5865: $result =~ s/\&$//;
5866: } else {
5867: $result = 'error';
5868: }
5869: };
5870: if (!$@) {
5871: &Reply($client, \$result, $userinput);
5872: } else {
5873: &Failure($client,"unknown_cmd\n",$userinput);
5874: }
5875: return 1;
5876: }
5877: ®ister_handler("autovalidateinstclasses", \&validate_classes_handler, 0, 1, 0);
5878:
5879: #
5880: # Create a password for a new LON-CAPA user added by auto-enrollment.
5881: # Only used for case where authentication method for new user is localauth
5882: #
5883: # Formal Parameters:
5884: # $cmd - The command request that got us dispatched.
5885: # $tail - The tail of the command. In this case this is a colon separated
5886: # set of words that will be split into:
5887: # $authparam - An authentication parameter (localauth parameter).
5888: # $cdom - The domain of the course from the institution's
5889: # point of view.
5890: # $client - The socket open on the client.
5891: # Returns:
5892: # 1 - continue processing.
5893: #
5894: sub create_auto_enroll_password_handler {
5895: my ($cmd, $tail, $client) = @_;
5896: my $userinput = "$cmd:$tail";
5897:
5898: my ($authparam, $cdom) = split(/:/, $userinput);
5899:
5900: my ($create_passwd,$authchk);
5901: ($authparam,
5902: $create_passwd,
5903: $authchk) = &localenroll::create_password($authparam,$cdom);
5904:
5905: &Reply($client, &escape($authparam.':'.$create_passwd.':'.$authchk)."\n",
5906: $userinput);
5907:
5908:
5909: return 1;
5910: }
5911: ®ister_handler("autocreatepassword", \&create_auto_enroll_password_handler,
5912: 0, 1, 0);
5913:
5914: sub auto_export_grades_handler {
5915: my ($cmd, $tail, $client) = @_;
5916: my $userinput = "$cmd:$tail";
5917: my ($cdom,$cnum,$info,$data) = split(/:/,$tail);
5918: my $inforef = &Apache::lonnet::thaw_unescape($info);
5919: my $dataref = &Apache::lonnet::thaw_unescape($data);
5920: my ($outcome,$result);;
5921: eval {
5922: local($SIG{__DIE__})='DEFAULT';
5923: my %rtnhash;
5924: $outcome=&localenroll::export_grades($cdom,$cnum,$inforef,$dataref,\%rtnhash);
5925: if ($outcome eq 'ok') {
5926: foreach my $key (keys(%rtnhash)) {
5927: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($rtnhash{$key}).'&';
5928: }
5929: $result =~ s/\&$//;
5930: }
5931: };
5932: if (!$@) {
5933: if ($outcome eq 'ok') {
5934: if ($cipher) {
5935: my $cmdlength=length($result);
5936: $result.=" ";
5937: my $encresult='';
5938: for (my $encidx=0;$encidx<=$cmdlength;$encidx+=8) {
5939: $encresult.= unpack("H16",
5940: $cipher->encrypt(substr($result,
5941: $encidx,
5942: 8)));
5943: }
5944: &Reply( $client, "enc:$cmdlength:$encresult\n", $userinput);
5945: } else {
5946: &Failure( $client, "error:no_key\n", $userinput);
5947: }
5948: } else {
5949: &Reply($client, "$outcome\n", $userinput);
5950: }
5951: } else {
5952: &Failure($client,"export_error\n",$userinput);
5953: }
5954: return 1;
5955: }
5956: ®ister_handler("autoexportgrades", \&auto_export_grades_handler,
5957: 1, 1, 0);
5958:
5959: # Retrieve and remove temporary files created by/during autoenrollment.
5960: #
5961: # Formal Parameters:
5962: # $cmd - The command that got us dispatched.
5963: # $tail - The tail of the command. In our case this is a colon
5964: # separated list that will be split into:
5965: # $filename - The name of the file to retrieve.
5966: # The filename is given as a path relative to
5967: # the LonCAPA temp file directory.
5968: # $client - Socket open on the client.
5969: #
5970: # Returns:
5971: # 1 - Continue processing.
5972: sub retrieve_auto_file_handler {
5973: my ($cmd, $tail, $client) = @_;
5974: my $userinput = "cmd:$tail";
5975:
5976: my ($filename) = split(/:/, $tail);
5977:
5978: my $source = $perlvar{'lonDaemons'}.'/tmp/'.$filename;
5979:
5980: if ($filename =~m{/\.\./}) {
5981: &Failure($client, "refused\n", $userinput);
5982: } elsif ($filename !~ /^$LONCAPA::match_domain\_$LONCAPA::match_courseid\_.+_classlist\.xml$/) {
5983: &Failure($client, "refused\n", $userinput);
5984: } elsif ( (-e $source) && ($filename ne '') ) {
5985: my $reply = '';
5986: if (open(my $fh,$source)) {
5987: while (<$fh>) {
5988: chomp($_);
5989: $_ =~ s/^\s+//g;
5990: $_ =~ s/\s+$//g;
5991: $reply .= $_;
5992: }
5993: close($fh);
5994: &Reply($client, &escape($reply)."\n", $userinput);
5995:
5996: # Does this have to be uncommented??!? (RF).
5997: #
5998: # unlink($source);
5999: } else {
6000: &Failure($client, "error\n", $userinput);
6001: }
6002: } else {
6003: &Failure($client, "error\n", $userinput);
6004: }
6005:
6006:
6007: return 1;
6008: }
6009: ®ister_handler("autoretrieve", \&retrieve_auto_file_handler, 0,1,0);
6010:
6011: sub crsreq_checks_handler {
6012: my ($cmd, $tail, $client) = @_;
6013: my $userinput = "$cmd:$tail";
6014: my $dom = $tail;
6015: my $result;
6016: my @reqtypes = ('official','unofficial','community','textbook','placement');
6017: eval {
6018: local($SIG{__DIE__})='DEFAULT';
6019: my %validations;
6020: my $response = &localenroll::crsreq_checks($dom,\@reqtypes,
6021: \%validations);
6022: if ($response eq 'ok') {
6023: foreach my $key (keys(%validations)) {
6024: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($validations{$key}).'&';
6025: }
6026: $result =~ s/\&$//;
6027: } else {
6028: $result = 'error';
6029: }
6030: };
6031: if (!$@) {
6032: &Reply($client, \$result, $userinput);
6033: } else {
6034: &Failure($client,"unknown_cmd\n",$userinput);
6035: }
6036: return 1;
6037: }
6038: ®ister_handler("autocrsreqchecks", \&crsreq_checks_handler, 0, 1, 0);
6039:
6040: sub validate_crsreq_handler {
6041: my ($cmd, $tail, $client) = @_;
6042: my $userinput = "$cmd:$tail";
6043: my ($dom,$owner,$crstype,$inststatuslist,$instcode,$instseclist,$customdata) = split(/:/, $tail);
6044: $instcode = &unescape($instcode);
6045: $owner = &unescape($owner);
6046: $crstype = &unescape($crstype);
6047: $inststatuslist = &unescape($inststatuslist);
6048: $instcode = &unescape($instcode);
6049: $instseclist = &unescape($instseclist);
6050: my $custominfo = &Apache::lonnet::thaw_unescape($customdata);
6051: my $outcome;
6052: eval {
6053: local($SIG{__DIE__})='DEFAULT';
6054: $outcome = &localenroll::validate_crsreq($dom,$owner,$crstype,
6055: $inststatuslist,$instcode,
6056: $instseclist,$custominfo);
6057: };
6058: if (!$@) {
6059: &Reply($client, \$outcome, $userinput);
6060: } else {
6061: &Failure($client,"unknown_cmd\n",$userinput);
6062: }
6063: return 1;
6064: }
6065: ®ister_handler("autocrsreqvalidation", \&validate_crsreq_handler, 0, 1, 0);
6066:
6067: sub crsreq_update_handler {
6068: my ($cmd, $tail, $client) = @_;
6069: my $userinput = "$cmd:$tail";
6070: my ($cdom,$cnum,$crstype,$action,$ownername,$ownerdomain,$fullname,$title,$code,
6071: $accessstart,$accessend,$infohashref) =
6072: split(/:/, $tail);
6073: $crstype = &unescape($crstype);
6074: $action = &unescape($action);
6075: $ownername = &unescape($ownername);
6076: $ownerdomain = &unescape($ownerdomain);
6077: $fullname = &unescape($fullname);
6078: $title = &unescape($title);
6079: $code = &unescape($code);
6080: $accessstart = &unescape($accessstart);
6081: $accessend = &unescape($accessend);
6082: my $incoming = &Apache::lonnet::thaw_unescape($infohashref);
6083: my ($result,$outcome);
6084: eval {
6085: local($SIG{__DIE__})='DEFAULT';
6086: my %rtnhash;
6087: $outcome = &localenroll::crsreq_updates($cdom,$cnum,$crstype,$action,
6088: $ownername,$ownerdomain,$fullname,
6089: $title,$code,$accessstart,$accessend,
6090: $incoming,\%rtnhash);
6091: if ($outcome eq 'ok') {
6092: my @posskeys = qw(createdweb createdmsg createdcustomized createdactions queuedweb queuedmsg formitems reviewweb validationjs onload javascript);
6093: foreach my $key (keys(%rtnhash)) {
6094: if (grep(/^\Q$key\E/,@posskeys)) {
6095: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($rtnhash{$key}).'&';
6096: }
6097: }
6098: $result =~ s/\&$//;
6099: }
6100: };
6101: if (!$@) {
6102: if ($outcome eq 'ok') {
6103: &Reply($client, \$result, $userinput);
6104: } else {
6105: &Reply($client, "format_error\n", $userinput);
6106: }
6107: } else {
6108: &Failure($client,"unknown_cmd\n",$userinput);
6109: }
6110: return 1;
6111: }
6112: ®ister_handler("autocrsrequpdate", \&crsreq_update_handler, 0, 1, 0);
6113:
6114: #
6115: # Read and retrieve institutional code format (for support form).
6116: # Formal Parameters:
6117: # $cmd - Command that dispatched us.
6118: # $tail - Tail of the command. In this case it conatins
6119: # the course domain and the coursename.
6120: # $client - Socket open on the client.
6121: # Returns:
6122: # 1 - Continue processing.
6123: #
6124: sub get_institutional_code_format_handler {
6125: my ($cmd, $tail, $client) = @_;
6126: my $userinput = "$cmd:$tail";
6127:
6128: my $reply;
6129: my($cdom,$course) = split(/:/,$tail);
6130: my @pairs = split/\&/,$course;
6131: my %instcodes = ();
6132: my %codes = ();
6133: my @codetitles = ();
6134: my %cat_titles = ();
6135: my %cat_order = ();
6136: foreach (@pairs) {
6137: my ($key,$value) = split/=/,$_;
6138: $instcodes{&unescape($key)} = &unescape($value);
6139: }
6140: my $formatreply = &localenroll::instcode_format($cdom,
6141: \%instcodes,
6142: \%codes,
6143: \@codetitles,
6144: \%cat_titles,
6145: \%cat_order);
6146: if ($formatreply eq 'ok') {
6147: my $codes_str = &Apache::lonnet::hash2str(%codes);
6148: my $codetitles_str = &Apache::lonnet::array2str(@codetitles);
6149: my $cat_titles_str = &Apache::lonnet::hash2str(%cat_titles);
6150: my $cat_order_str = &Apache::lonnet::hash2str(%cat_order);
6151: &Reply($client,
6152: $codes_str.':'.$codetitles_str.':'.$cat_titles_str.':'
6153: .$cat_order_str."\n",
6154: $userinput);
6155: } else {
6156: # this else branch added by RF since if not ok, lonc will
6157: # hang waiting on reply until timeout.
6158: #
6159: &Reply($client, "format_error\n", $userinput);
6160: }
6161:
6162: return 1;
6163: }
6164: ®ister_handler("autoinstcodeformat",
6165: \&get_institutional_code_format_handler,0,1,0);
6166:
6167: sub get_institutional_defaults_handler {
6168: my ($cmd, $tail, $client) = @_;
6169: my $userinput = "$cmd:$tail";
6170:
6171: my $dom = $tail;
6172: my %defaults_hash;
6173: my @code_order;
6174: my $outcome;
6175: eval {
6176: local($SIG{__DIE__})='DEFAULT';
6177: $outcome = &localenroll::instcode_defaults($dom,\%defaults_hash,
6178: \@code_order);
6179: };
6180: if (!$@) {
6181: if ($outcome eq 'ok') {
6182: my $result='';
6183: while (my ($key,$value) = each(%defaults_hash)) {
6184: $result.=&escape($key).'='.&escape($value).'&';
6185: }
6186: $result .= 'code_order='.&escape(join('&',@code_order));
6187: &Reply($client,\$result,$userinput);
6188: } else {
6189: &Reply($client,"error\n", $userinput);
6190: }
6191: } else {
6192: &Failure($client,"unknown_cmd\n",$userinput);
6193: }
6194: }
6195: ®ister_handler("autoinstcodedefaults",
6196: \&get_institutional_defaults_handler,0,1,0);
6197:
6198: sub get_possible_instcodes_handler {
6199: my ($cmd, $tail, $client) = @_;
6200: my $userinput = "$cmd:$tail";
6201:
6202: my $reply;
6203: my $cdom = $tail;
6204: my (@codetitles,%cat_titles,%cat_order,@code_order);
6205: my $formatreply = &localenroll::possible_instcodes($cdom,
6206: \@codetitles,
6207: \%cat_titles,
6208: \%cat_order,
6209: \@code_order);
6210: if ($formatreply eq 'ok') {
6211: my $result = join('&',map {&escape($_);} (@codetitles)).':';
6212: $result .= join('&',map {&escape($_);} (@code_order)).':';
6213: foreach my $key (keys(%cat_titles)) {
6214: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($cat_titles{$key}).'&';
6215: }
6216: $result =~ s/\&$//;
6217: $result .= ':';
6218: foreach my $key (keys(%cat_order)) {
6219: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($cat_order{$key}).'&';
6220: }
6221: $result =~ s/\&$//;
6222: &Reply($client,\$result,$userinput);
6223: } else {
6224: &Reply($client, "format_error\n", $userinput);
6225: }
6226: return 1;
6227: }
6228: ®ister_handler("autopossibleinstcodes",
6229: \&get_possible_instcodes_handler,0,1,0);
6230:
6231: sub get_institutional_user_rules {
6232: my ($cmd, $tail, $client) = @_;
6233: my $userinput = "$cmd:$tail";
6234: my $dom = &unescape($tail);
6235: my (%rules_hash,@rules_order);
6236: my $outcome;
6237: eval {
6238: local($SIG{__DIE__})='DEFAULT';
6239: $outcome = &localenroll::username_rules($dom,\%rules_hash,\@rules_order);
6240: };
6241: if (!$@) {
6242: if ($outcome eq 'ok') {
6243: my $result;
6244: foreach my $key (keys(%rules_hash)) {
6245: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($rules_hash{$key}).'&';
6246: }
6247: $result =~ s/\&$//;
6248: $result .= ':';
6249: if (@rules_order > 0) {
6250: foreach my $item (@rules_order) {
6251: $result .= &escape($item).'&';
6252: }
6253: }
6254: $result =~ s/\&$//;
6255: &Reply($client,\$result,$userinput);
6256: } else {
6257: &Reply($client,"error\n", $userinput);
6258: }
6259: } else {
6260: &Failure($client,"unknown_cmd\n",$userinput);
6261: }
6262: }
6263: ®ister_handler("instuserrules",\&get_institutional_user_rules,0,1,0);
6264:
6265: sub get_institutional_id_rules {
6266: my ($cmd, $tail, $client) = @_;
6267: my $userinput = "$cmd:$tail";
6268: my $dom = &unescape($tail);
6269: my (%rules_hash,@rules_order);
6270: my $outcome;
6271: eval {
6272: local($SIG{__DIE__})='DEFAULT';
6273: $outcome = &localenroll::id_rules($dom,\%rules_hash,\@rules_order);
6274: };
6275: if (!$@) {
6276: if ($outcome eq 'ok') {
6277: my $result;
6278: foreach my $key (keys(%rules_hash)) {
6279: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($rules_hash{$key}).'&';
6280: }
6281: $result =~ s/\&$//;
6282: $result .= ':';
6283: if (@rules_order > 0) {
6284: foreach my $item (@rules_order) {
6285: $result .= &escape($item).'&';
6286: }
6287: }
6288: $result =~ s/\&$//;
6289: &Reply($client,\$result,$userinput);
6290: } else {
6291: &Reply($client,"error\n", $userinput);
6292: }
6293: } else {
6294: &Failure($client,"unknown_cmd\n",$userinput);
6295: }
6296: }
6297: ®ister_handler("instidrules",\&get_institutional_id_rules,0,1,0);
6298:
6299: sub get_institutional_selfcreate_rules {
6300: my ($cmd, $tail, $client) = @_;
6301: my $userinput = "$cmd:$tail";
6302: my $dom = &unescape($tail);
6303: my (%rules_hash,@rules_order);
6304: my $outcome;
6305: eval {
6306: local($SIG{__DIE__})='DEFAULT';
6307: $outcome = &localenroll::selfcreate_rules($dom,\%rules_hash,\@rules_order);
6308: };
6309: if (!$@) {
6310: if ($outcome eq 'ok') {
6311: my $result;
6312: foreach my $key (keys(%rules_hash)) {
6313: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($rules_hash{$key}).'&';
6314: }
6315: $result =~ s/\&$//;
6316: $result .= ':';
6317: if (@rules_order > 0) {
6318: foreach my $item (@rules_order) {
6319: $result .= &escape($item).'&';
6320: }
6321: }
6322: $result =~ s/\&$//;
6323: &Reply($client,\$result,$userinput);
6324: } else {
6325: &Reply($client,"error\n", $userinput);
6326: }
6327: } else {
6328: &Failure($client,"unknown_cmd\n",$userinput);
6329: }
6330: }
6331: ®ister_handler("instemailrules",\&get_institutional_selfcreate_rules,0,1,0);
6332:
6333:
6334: sub institutional_username_check {
6335: my ($cmd, $tail, $client) = @_;
6336: my $userinput = "$cmd:$tail";
6337: my %rulecheck;
6338: my $outcome;
6339: my ($udom,$uname,@rules) = split(/:/,$tail);
6340: $udom = &unescape($udom);
6341: $uname = &unescape($uname);
6342: @rules = map {&unescape($_);} (@rules);
6343: eval {
6344: local($SIG{__DIE__})='DEFAULT';
6345: $outcome = &localenroll::username_check($udom,$uname,\@rules,\%rulecheck);
6346: };
6347: if (!$@) {
6348: if ($outcome eq 'ok') {
6349: my $result='';
6350: foreach my $key (keys(%rulecheck)) {
6351: $result.=&escape($key).'='.&Apache::lonnet::freeze_escape($rulecheck{$key}).'&';
6352: }
6353: &Reply($client,\$result,$userinput);
6354: } else {
6355: &Reply($client,"error\n", $userinput);
6356: }
6357: } else {
6358: &Failure($client,"unknown_cmd\n",$userinput);
6359: }
6360: }
6361: ®ister_handler("instrulecheck",\&institutional_username_check,0,1,0);
6362:
6363: sub institutional_id_check {
6364: my ($cmd, $tail, $client) = @_;
6365: my $userinput = "$cmd:$tail";
6366: my %rulecheck;
6367: my $outcome;
6368: my ($udom,$id,@rules) = split(/:/,$tail);
6369: $udom = &unescape($udom);
6370: $id = &unescape($id);
6371: @rules = map {&unescape($_);} (@rules);
6372: eval {
6373: local($SIG{__DIE__})='DEFAULT';
6374: $outcome = &localenroll::id_check($udom,$id,\@rules,\%rulecheck);
6375: };
6376: if (!$@) {
6377: if ($outcome eq 'ok') {
6378: my $result='';
6379: foreach my $key (keys(%rulecheck)) {
6380: $result.=&escape($key).'='.&Apache::lonnet::freeze_escape($rulecheck{$key}).'&';
6381: }
6382: &Reply($client,\$result,$userinput);
6383: } else {
6384: &Reply($client,"error\n", $userinput);
6385: }
6386: } else {
6387: &Failure($client,"unknown_cmd\n",$userinput);
6388: }
6389: }
6390: ®ister_handler("instidrulecheck",\&institutional_id_check,0,1,0);
6391:
6392: sub institutional_selfcreate_check {
6393: my ($cmd, $tail, $client) = @_;
6394: my $userinput = "$cmd:$tail";
6395: my %rulecheck;
6396: my $outcome;
6397: my ($udom,$email,@rules) = split(/:/,$tail);
6398: $udom = &unescape($udom);
6399: $email = &unescape($email);
6400: @rules = map {&unescape($_);} (@rules);
6401: eval {
6402: local($SIG{__DIE__})='DEFAULT';
6403: $outcome = &localenroll::selfcreate_check($udom,$email,\@rules,\%rulecheck);
6404: };
6405: if (!$@) {
6406: if ($outcome eq 'ok') {
6407: my $result='';
6408: foreach my $key (keys(%rulecheck)) {
6409: $result.=&escape($key).'='.&Apache::lonnet::freeze_escape($rulecheck{$key}).'&';
6410: }
6411: &Reply($client,\$result,$userinput);
6412: } else {
6413: &Reply($client,"error\n", $userinput);
6414: }
6415: } else {
6416: &Failure($client,"unknown_cmd\n",$userinput);
6417: }
6418: }
6419: ®ister_handler("instselfcreatecheck",\&institutional_selfcreate_check,0,1,0);
6420:
6421: # Get domain specific conditions for import of student photographs to a course
6422: #
6423: # Retrieves information from photo_permission subroutine in localenroll.
6424: # Returns outcome (ok) if no processing errors, and whether course owner is
6425: # required to accept conditions of use (yes/no).
6426: #
6427: #
6428: sub photo_permission_handler {
6429: my ($cmd, $tail, $client) = @_;
6430: my $userinput = "$cmd:$tail";
6431: my $cdom = $tail;
6432: my ($perm_reqd,$conditions);
6433: my $outcome;
6434: eval {
6435: local($SIG{__DIE__})='DEFAULT';
6436: $outcome = &localenroll::photo_permission($cdom,\$perm_reqd,
6437: \$conditions);
6438: };
6439: if (!$@) {
6440: &Reply($client, &escape($outcome.':'.$perm_reqd.':'. $conditions)."\n",
6441: $userinput);
6442: } else {
6443: &Failure($client,"unknown_cmd\n",$userinput);
6444: }
6445: return 1;
6446: }
6447: ®ister_handler("autophotopermission",\&photo_permission_handler,0,1,0);
6448:
6449: #
6450: # Checks if student photo is available for a user in the domain, in the user's
6451: # directory (in /userfiles/internal/studentphoto.jpg).
6452: # Uses localstudentphoto:fetch() to ensure there is an up to date copy of
6453: # the student's photo.
6454:
6455: sub photo_check_handler {
6456: my ($cmd, $tail, $client) = @_;
6457: my $userinput = "$cmd:$tail";
6458: my ($udom,$uname,$pid) = split(/:/,$tail);
6459: $udom = &unescape($udom);
6460: $uname = &unescape($uname);
6461: $pid = &unescape($pid);
6462: my $path=&propath($udom,$uname).'/userfiles/internal/';
6463: if (!-e $path) {
6464: &mkpath($path);
6465: }
6466: my $response;
6467: my $result = &localstudentphoto::fetch($udom,$uname,$pid,\$response);
6468: $result .= ':'.$response;
6469: &Reply($client, &escape($result)."\n",$userinput);
6470: return 1;
6471: }
6472: ®ister_handler("autophotocheck",\&photo_check_handler,0,1,0);
6473:
6474: #
6475: # Retrieve information from localenroll about whether to provide a button
6476: # for users who have enbled import of student photos to initiate an
6477: # update of photo files for registered students. Also include
6478: # comment to display alongside button.
6479:
6480: sub photo_choice_handler {
6481: my ($cmd, $tail, $client) = @_;
6482: my $userinput = "$cmd:$tail";
6483: my $cdom = &unescape($tail);
6484: my ($update,$comment);
6485: eval {
6486: local($SIG{__DIE__})='DEFAULT';
6487: ($update,$comment) = &localenroll::manager_photo_update($cdom);
6488: };
6489: if (!$@) {
6490: &Reply($client,&escape($update).':'.&escape($comment)."\n",$userinput);
6491: } else {
6492: &Failure($client,"unknown_cmd\n",$userinput);
6493: }
6494: return 1;
6495: }
6496: ®ister_handler("autophotochoice",\&photo_choice_handler,0,1,0);
6497:
6498: #
6499: # Gets a student's photo to exist (in the correct image type) in the user's
6500: # directory.
6501: # Formal Parameters:
6502: # $cmd - The command request that got us dispatched.
6503: # $tail - A colon separated set of words that will be split into:
6504: # $domain - student's domain
6505: # $uname - student username
6506: # $type - image type desired
6507: # $client - The socket open on the client.
6508: # Returns:
6509: # 1 - continue processing.
6510:
6511: sub student_photo_handler {
6512: my ($cmd, $tail, $client) = @_;
6513: my ($domain,$uname,$ext,$type) = split(/:/, $tail);
6514:
6515: my $path=&propath($domain,$uname). '/userfiles/internal/';
6516: my $filename = 'studentphoto.'.$ext;
6517: if ($type eq 'thumbnail') {
6518: $filename = 'studentphoto_tn.'.$ext;
6519: }
6520: if (-e $path.$filename) {
6521: &Reply($client,"ok\n","$cmd:$tail");
6522: return 1;
6523: }
6524: &mkpath($path);
6525: my $file;
6526: if ($type eq 'thumbnail') {
6527: eval {
6528: local($SIG{__DIE__})='DEFAULT';
6529: $file=&localstudentphoto::fetch_thumbnail($domain,$uname);
6530: };
6531: } else {
6532: $file=&localstudentphoto::fetch($domain,$uname);
6533: }
6534: if (!$file) {
6535: &Failure($client,"unavailable\n","$cmd:$tail");
6536: return 1;
6537: }
6538: if (!-e $path.$filename) { &convert_photo($file,$path.$filename); }
6539: if (-e $path.$filename) {
6540: &Reply($client,"ok\n","$cmd:$tail");
6541: return 1;
6542: }
6543: &Failure($client,"unable_to_convert\n","$cmd:$tail");
6544: return 1;
6545: }
6546: ®ister_handler("studentphoto", \&student_photo_handler, 0, 1, 0);
6547:
6548: sub inst_usertypes_handler {
6549: my ($cmd, $domain, $client) = @_;
6550: my $res;
6551: my $userinput = $cmd.":".$domain; # For logging purposes.
6552: my (%typeshash,@order,$result);
6553: eval {
6554: local($SIG{__DIE__})='DEFAULT';
6555: $result=&localenroll::inst_usertypes($domain,\%typeshash,\@order);
6556: };
6557: if ($result eq 'ok') {
6558: if (keys(%typeshash) > 0) {
6559: foreach my $key (keys(%typeshash)) {
6560: $res.=&escape($key).'='.&escape($typeshash{$key}).'&';
6561: }
6562: }
6563: $res=~s/\&$//;
6564: $res .= ':';
6565: if (@order > 0) {
6566: foreach my $item (@order) {
6567: $res .= &escape($item).'&';
6568: }
6569: }
6570: $res=~s/\&$//;
6571: }
6572: &Reply($client, \$res, $userinput);
6573: return 1;
6574: }
6575: ®ister_handler("inst_usertypes", \&inst_usertypes_handler, 0, 1, 0);
6576:
6577: # mkpath makes all directories for a file, expects an absolute path with a
6578: # file or a trailing / if just a dir is passed
6579: # returns 1 on success 0 on failure
6580: sub mkpath {
6581: my ($file)=@_;
6582: my @parts=split(/\//,$file,-1);
6583: my $now=$parts[0].'/'.$parts[1].'/'.$parts[2];
6584: for (my $i=3;$i<= ($#parts-1);$i++) {
6585: $now.='/'.$parts[$i];
6586: if (!-e $now) {
6587: if (!mkdir($now,0770)) { return 0; }
6588: }
6589: }
6590: return 1;
6591: }
6592:
6593: #---------------------------------------------------------------
6594: #
6595: # Getting, decoding and dispatching requests:
6596: #
6597: #
6598: # Get a Request:
6599: # Gets a Request message from the client. The transaction
6600: # is defined as a 'line' of text. We remove the new line
6601: # from the text line.
6602: #
6603: sub get_request {
6604: my $input = <$client>;
6605: chomp($input);
6606:
6607: &Debug("get_request: Request = $input\n");
6608:
6609: &status('Processing '.$clientname.':'.$input);
6610:
6611: return $input;
6612: }
6613: #---------------------------------------------------------------
6614: #
6615: # Process a request. This sub should shrink as each action
6616: # gets farmed out into a separat sub that is registered
6617: # with the dispatch hash.
6618: #
6619: # Parameters:
6620: # user_input - The request received from the client (lonc).
6621: #
6622: # Returns:
6623: # true to keep processing, false if caller should exit.
6624: #
6625: sub process_request {
6626: my ($userinput) = @_; # Easier for now to break style than to
6627: # fix all the userinput -> user_input.
6628: my $wasenc = 0; # True if request was encrypted.
6629: # ------------------------------------------------------------ See if encrypted
6630: # for command
6631: # sethost:<server>
6632: # <command>:<args>
6633: # we just send it to the processor
6634: # for
6635: # sethost:<server>:<command>:<args>
6636: # we do the implict set host and then do the command
6637: if ($userinput =~ /^sethost:/) {
6638: (my $cmd,my $newid,$userinput) = split(':',$userinput,3);
6639: if (defined($userinput)) {
6640: &sethost("$cmd:$newid");
6641: } else {
6642: $userinput = "$cmd:$newid";
6643: }
6644: }
6645:
6646: if ($userinput =~ /^enc/) {
6647: $userinput = decipher($userinput);
6648: $wasenc=1;
6649: if(!$userinput) { # Cipher not defined.
6650: &Failure($client, "error: Encrypted data without negotated key\n");
6651: return 0;
6652: }
6653: }
6654: Debug("process_request: $userinput\n");
6655:
6656: #
6657: # The 'correct way' to add a command to lond is now to
6658: # write a sub to execute it and Add it to the command dispatch
6659: # hash via a call to register_handler.. The comments to that
6660: # sub should give you enough to go on to show how to do this
6661: # along with the examples that are building up as this code
6662: # is getting refactored. Until all branches of the
6663: # if/elseif monster below have been factored out into
6664: # separate procesor subs, if the dispatch hash is missing
6665: # the command keyword, we will fall through to the remainder
6666: # of the if/else chain below in order to keep this thing in
6667: # working order throughout the transmogrification.
6668:
6669: my ($command, $tail) = split(/:/, $userinput, 2);
6670: chomp($command);
6671: chomp($tail);
6672: $tail =~ s/(\r)//; # This helps people debugging with e.g. telnet.
6673: $command =~ s/(\r)//; # And this too for parameterless commands.
6674: if(!$tail) {
6675: $tail =""; # defined but blank.
6676: }
6677:
6678: &Debug("Command received: $command, encoded = $wasenc");
6679:
6680: if(defined $Dispatcher{$command}) {
6681:
6682: my $dispatch_info = $Dispatcher{$command};
6683: my $handler = $$dispatch_info[0];
6684: my $need_encode = $$dispatch_info[1];
6685: my $client_types = $$dispatch_info[2];
6686: Debug("Matched dispatch hash: mustencode: $need_encode "
6687: ."ClientType $client_types");
6688:
6689: # Validate the request:
6690:
6691: my $ok = 1;
6692: my $requesterprivs = 0;
6693: if(&isClient()) {
6694: $requesterprivs |= $CLIENT_OK;
6695: }
6696: if(&isManager()) {
6697: $requesterprivs |= $MANAGER_OK;
6698: }
6699: if($need_encode && (!$wasenc)) {
6700: Debug("Must encode but wasn't: $need_encode $wasenc");
6701: $ok = 0;
6702: }
6703: if(($client_types & $requesterprivs) == 0) {
6704: Debug("Client not privileged to do this operation");
6705: $ok = 0;
6706: }
6707: if ($ok) {
6708: my $realcommand = $command;
6709: if ($command eq 'querysend') {
6710: my ($query,$rest)=split(/\:/,$tail,2);
6711: $query=~s/\n*$//g;
6712: my @possqueries =
6713: qw(userlog courselog fetchenrollment institutionalphotos usersearch instdirsearch getinstuser getmultinstusers);
6714: if (grep(/^\Q$query\E$/,@possqueries)) {
6715: $command .= '_'.$query;
6716: } elsif ($query eq 'prepare activity log') {
6717: $command .= '_activitylog';
6718: }
6719: }
6720: if (ref($trust{$command}) eq 'HASH') {
6721: my $donechecks;
6722: if ($trust{$command}{'anywhere'}) {
6723: $donechecks = 1;
6724: } elsif ($trust{$command}{'manageronly'}) {
6725: unless (&isManager()) {
6726: $ok = 0;
6727: }
6728: $donechecks = 1;
6729: } elsif ($trust{$command}{'institutiononly'}) {
6730: unless ($clientsameinst) {
6731: $ok = 0;
6732: }
6733: $donechecks = 1;
6734: } elsif ($clientsameinst) {
6735: $donechecks = 1;
6736: }
6737: unless ($donechecks) {
6738: foreach my $rule (keys(%{$trust{$command}})) {
6739: next if ($rule eq 'remote');
6740: if ($trust{$command}{$rule}) {
6741: if ($clientprohibited{$rule}) {
6742: $ok = 0;
6743: } else {
6744: $ok = 1;
6745: $donechecks = 1;
6746: last;
6747: }
6748: }
6749: }
6750: }
6751: unless ($donechecks) {
6752: if ($trust{$command}{'remote'}) {
6753: if ($clientremoteok) {
6754: $ok = 1;
6755: } else {
6756: $ok = 0;
6757: }
6758: }
6759: }
6760: }
6761: $command = $realcommand;
6762: }
6763:
6764: if($ok) {
6765: Debug("Dispatching to handler $command $tail");
6766: my $keep_going = &$handler($command, $tail, $client);
6767: return $keep_going;
6768: } else {
6769: Debug("Refusing to dispatch because client did not match requirements");
6770: Failure($client, "refused\n", $userinput);
6771: return 1;
6772: }
6773: }
6774:
6775: print $client "unknown_cmd\n";
6776: # -------------------------------------------------------------------- complete
6777: Debug("process_request - returning 1");
6778: return 1;
6779: }
6780: #
6781: # Decipher encoded traffic
6782: # Parameters:
6783: # input - Encoded data.
6784: # Returns:
6785: # Decoded data or undef if encryption key was not yet negotiated.
6786: # Implicit input:
6787: # cipher - This global holds the negotiated encryption key.
6788: #
6789: sub decipher {
6790: my ($input) = @_;
6791: my $output = '';
6792:
6793:
6794: if($cipher) {
6795: my($enc, $enclength, $encinput) = split(/:/, $input);
6796: for(my $encidx = 0; $encidx < length($encinput); $encidx += 16) {
6797: $output .=
6798: $cipher->decrypt(pack("H16", substr($encinput, $encidx, 16)));
6799: }
6800: return substr($output, 0, $enclength);
6801: } else {
6802: return undef;
6803: }
6804: }
6805:
6806: #
6807: # Register a command processor. This function is invoked to register a sub
6808: # to process a request. Once registered, the ProcessRequest sub can automatically
6809: # dispatch requests to an appropriate sub, and do the top level validity checking
6810: # as well:
6811: # - Is the keyword recognized.
6812: # - Is the proper client type attempting the request.
6813: # - Is the request encrypted if it has to be.
6814: # Parameters:
6815: # $request_name - Name of the request being registered.
6816: # This is the command request that will match
6817: # against the hash keywords to lookup the information
6818: # associated with the dispatch information.
6819: # $procedure - Reference to a sub to call to process the request.
6820: # All subs get called as follows:
6821: # Procedure($cmd, $tail, $replyfd, $key)
6822: # $cmd - the actual keyword that invoked us.
6823: # $tail - the tail of the request that invoked us.
6824: # $replyfd- File descriptor connected to the client
6825: # $must_encode - True if the request must be encoded to be good.
6826: # $client_ok - True if it's ok for a client to request this.
6827: # $manager_ok - True if it's ok for a manager to request this.
6828: # Side effects:
6829: # - On success, the Dispatcher hash has an entry added for the key $RequestName
6830: # - On failure, the program will die as it's a bad internal bug to try to
6831: # register a duplicate command handler.
6832: #
6833: sub register_handler {
6834: my ($request_name,$procedure,$must_encode, $client_ok,$manager_ok) = @_;
6835:
6836: # Don't allow duplication#
6837:
6838: if (defined $Dispatcher{$request_name}) {
6839: die "Attempting to define a duplicate request handler for $request_name\n";
6840: }
6841: # Build the client type mask:
6842:
6843: my $client_type_mask = 0;
6844: if($client_ok) {
6845: $client_type_mask |= $CLIENT_OK;
6846: }
6847: if($manager_ok) {
6848: $client_type_mask |= $MANAGER_OK;
6849: }
6850:
6851: # Enter the hash:
6852:
6853: my @entry = ($procedure, $must_encode, $client_type_mask);
6854:
6855: $Dispatcher{$request_name} = \@entry;
6856:
6857: }
6858:
6859:
6860: #------------------------------------------------------------------
6861:
6862:
6863:
6864:
6865: #
6866: # Convert an error return code from lcpasswd to a string value.
6867: #
6868: sub lcpasswdstrerror {
6869: my $ErrorCode = shift;
6870: if(($ErrorCode < 0) || ($ErrorCode > $lastpwderror)) {
6871: return "lcpasswd Unrecognized error return value ".$ErrorCode;
6872: } else {
6873: return $passwderrors[$ErrorCode];
6874: }
6875: }
6876:
6877: # grabs exception and records it to log before exiting
6878: sub catchexception {
6879: my ($error)=@_;
6880: $SIG{'QUIT'}='DEFAULT';
6881: $SIG{__DIE__}='DEFAULT';
6882: &status("Catching exception");
6883: &logthis("<font color='red'>CRITICAL: "
6884: ."ABNORMAL EXIT. Child $$ for server ".$perlvar{'lonHostID'}." died through "
6885: ."a crash with this error msg->[$error]</font>");
6886: &logthis('Famous last words: '.$status.' - '.$lastlog);
6887: if ($client) { print $client "error: $error\n"; }
6888: $server->close();
6889: die($error);
6890: }
6891: sub timeout {
6892: &status("Handling Timeout");
6893: &logthis("<font color='red'>CRITICAL: TIME OUT ".$$."</font>");
6894: &catchexception('Timeout');
6895: }
6896: # -------------------------------- Set signal handlers to record abnormal exits
6897:
6898:
6899: $SIG{'QUIT'}=\&catchexception;
6900: $SIG{__DIE__}=\&catchexception;
6901:
6902: # ---------------------------------- Read loncapa_apache.conf and loncapa.conf
6903: &status("Read loncapa.conf and loncapa_apache.conf");
6904: my $perlvarref=LONCAPA::Configuration::read_conf('loncapa.conf');
6905: %perlvar=%{$perlvarref};
6906: undef $perlvarref;
6907:
6908: # ----------------------------- Make sure this process is running from user=www
6909: my $wwwid=getpwnam('www');
6910: if ($wwwid!=$<) {
6911: my $emailto="$perlvar{'lonAdmEMail'},$perlvar{'lonSysEMail'}";
6912: my $subj="LON: $currenthostid User ID mismatch";
6913: system("echo 'User ID mismatch. lond must be run as user www.' |".
6914: " mail -s '$subj' $emailto > /dev/null");
6915: exit 1;
6916: }
6917:
6918: # --------------------------------------------- Check if other instance running
6919:
6920: my $pidfile="$perlvar{'lonDaemons'}/logs/lond.pid";
6921:
6922: if (-e $pidfile) {
6923: my $lfh=IO::File->new("$pidfile");
6924: my $pide=<$lfh>;
6925: chomp($pide);
6926: if (kill 0 => $pide) { die "already running"; }
6927: }
6928:
6929: # ------------------------------------------------------------- Read hosts file
6930:
6931:
6932:
6933: # establish SERVER socket, bind and listen.
6934: $server = IO::Socket::INET->new(LocalPort => $perlvar{'londPort'},
6935: Type => SOCK_STREAM,
6936: Proto => 'tcp',
6937: ReuseAddr => 1,
6938: Listen => 10 )
6939: or die "making socket: $@\n";
6940:
6941: # --------------------------------------------------------- Do global variables
6942:
6943: # global variables
6944:
6945: my %children = (); # keys are current child process IDs
6946:
6947: sub REAPER { # takes care of dead children
6948: $SIG{CHLD} = \&REAPER;
6949: &status("Handling child death");
6950: my $pid;
6951: do {
6952: $pid = waitpid(-1,&WNOHANG());
6953: if (defined($children{$pid})) {
6954: &logthis("Child $pid died");
6955: delete($children{$pid});
6956: } elsif ($pid > 0) {
6957: &logthis("Unknown Child $pid died");
6958: }
6959: } while ( $pid > 0 );
6960: foreach my $child (keys(%children)) {
6961: $pid = waitpid($child,&WNOHANG());
6962: if ($pid > 0) {
6963: &logthis("Child $child - $pid looks like we missed it's death");
6964: delete($children{$pid});
6965: }
6966: }
6967: &status("Finished Handling child death");
6968: }
6969:
6970: sub HUNTSMAN { # signal handler for SIGINT
6971: &status("Killing children (INT)");
6972: local($SIG{CHLD}) = 'IGNORE'; # we're going to kill our children
6973: kill 'INT' => keys %children;
6974: &logthis("Free socket: ".shutdown($server,2)); # free up socket
6975: my $execdir=$perlvar{'lonDaemons'};
6976: unlink("$execdir/logs/lond.pid");
6977: &logthis("<font color='red'>CRITICAL: Shutting down</font>");
6978: &status("Done killing children");
6979: exit; # clean up with dignity
6980: }
6981:
6982: sub HUPSMAN { # signal handler for SIGHUP
6983: local($SIG{CHLD}) = 'IGNORE'; # we're going to kill our children
6984: &status("Killing children for restart (HUP)");
6985: kill 'INT' => keys %children;
6986: &logthis("Free socket: ".shutdown($server,2)); # free up socket
6987: &logthis("<font color='red'>CRITICAL: Restarting</font>");
6988: my $execdir=$perlvar{'lonDaemons'};
6989: unlink("$execdir/logs/lond.pid");
6990: &status("Restarting self (HUP)");
6991: exec("$execdir/lond"); # here we go again
6992: }
6993:
6994: #
6995: # Reload the Apache daemon's state.
6996: # This is done by invoking /home/httpd/perl/apachereload
6997: # a setuid perl script that can be root for us to do this job.
6998: #
6999: sub ReloadApache {
7000: # --------------------------- Handle case of another apachereload process (locking)
7001: if (&LONCAPA::try_to_lock('/tmp/lock_apachereload')) {
7002: my $execdir = $perlvar{'lonDaemons'};
7003: my $script = $execdir."/apachereload";
7004: system($script);
7005: unlink('/tmp/lock_apachereload'); # Remove the lock file.
7006: }
7007: }
7008:
7009: #
7010: # Called in response to a USR2 signal.
7011: # - Reread hosts.tab
7012: # - All children connected to hosts that were removed from hosts.tab
7013: # are killed via SIGINT
7014: # - All children connected to previously existing hosts are sent SIGUSR1
7015: # - Our internal hosts hash is updated to reflect the new contents of
7016: # hosts.tab causing connections from hosts added to hosts.tab to
7017: # now be honored.
7018: #
7019: sub UpdateHosts {
7020: &status("Reload hosts.tab");
7021: logthis('<font color="blue"> Updating connections </font>');
7022: #
7023: # The %children hash has the set of IP's we currently have children
7024: # on. These need to be matched against records in the hosts.tab
7025: # Any ip's no longer in the table get killed off they correspond to
7026: # either dropped or changed hosts. Note that the re-read of the table
7027: # will take care of new and changed hosts as connections come into being.
7028:
7029: &Apache::lonnet::reset_hosts_info();
7030: my %active;
7031:
7032: foreach my $child (keys(%children)) {
7033: my $childip = $children{$child};
7034: if ($childip ne '127.0.0.1'
7035: && !defined(&Apache::lonnet::get_hosts_from_ip($childip))) {
7036: logthis('<font color="blue"> UpdateHosts killing child '
7037: ." $child for ip $childip </font>");
7038: kill('INT', $child);
7039: } else {
7040: $active{$child} = $childip;
7041: logthis('<font color="green"> keeping child for ip '
7042: ." $childip (pid=$child) </font>");
7043: }
7044: }
7045:
7046: my %oldconf = %secureconf;
7047: my %connchange;
7048: if (lonssl::Read_Connect_Config(\%secureconf,\%crlchecked,\%perlvar) eq 'ok') {
7049: logthis('<font color="blue"> Reloaded SSL connection rules and cleared CRL checking history </font>');
7050: } else {
7051: logthis('<font color="yellow"> Failed to reload SSL connection rules and clear CRL checking history </font>');
7052: }
7053: if ((ref($oldconf{'connfrom'}) eq 'HASH') && (ref($secureconf{'connfrom'}) eq 'HASH')) {
7054: foreach my $type ('dom','intdom','other') {
7055: if ((($oldconf{'connfrom'}{$type} eq 'no') && ($secureconf{'connfrom'}{$type} eq 'req')) ||
7056: (($oldconf{'connfrom'}{$type} eq 'req') && ($secureconf{'connfrom'}{$type} eq 'no'))) {
7057: $connchange{$type} = 1;
7058: }
7059: }
7060: }
7061: if (keys(%connchange)) {
7062: foreach my $child (keys(%active)) {
7063: my $childip = $active{$child};
7064: if ($childip ne '127.0.0.1') {
7065: my $childhostname = gethostbyaddr(Socket::inet_aton($childip),AF_INET);
7066: if ($childhostname ne '') {
7067: my $childlonhost = &Apache::lonnet::get_server_homeID($childhostname);
7068: my ($samedom,$sameinst) = &set_client_info($childlonhost);
7069: if ($samedom) {
7070: if ($connchange{'dom'}) {
7071: logthis('<font color="blue"> UpdateHosts killing child '
7072: ." $child for ip $childip </font>");
7073: kill('INT', $child);
7074: }
7075: } elsif ($sameinst) {
7076: if ($connchange{'intdom'}) {
7077: logthis('<font color="blue"> UpdateHosts killing child '
7078: ." $child for ip $childip </font>");
7079: kill('INT', $child);
7080: }
7081: } else {
7082: if ($connchange{'other'}) {
7083: logthis('<font color="blue"> UpdateHosts killing child '
7084: ." $child for ip $childip </font>");
7085: kill('INT', $child);
7086: }
7087: }
7088: }
7089: }
7090: }
7091: }
7092: ReloadApache;
7093: &status("Finished reloading hosts.tab");
7094: }
7095:
7096: sub checkchildren {
7097: &status("Checking on the children (sending signals)");
7098: &initnewstatus();
7099: &logstatus();
7100: &logthis('Going to check on the children');
7101: my $docdir=$perlvar{'lonDocRoot'};
7102: foreach (sort keys %children) {
7103: #sleep 1;
7104: unless (kill 'USR1' => $_) {
7105: &logthis ('Child '.$_.' is dead');
7106: &logstatus($$.' is dead');
7107: delete($children{$_});
7108: }
7109: }
7110: sleep 5;
7111: $SIG{ALRM} = sub { Debug("timeout");
7112: die "timeout"; };
7113: $SIG{__DIE__} = 'DEFAULT';
7114: &status("Checking on the children (waiting for reports)");
7115: foreach (sort keys %children) {
7116: unless (-e "$docdir/lon-status/londchld/$_.txt") {
7117: eval {
7118: alarm(300);
7119: &logthis('Child '.$_.' did not respond');
7120: kill 9 => $_;
7121: #$emailto="$perlvar{'lonAdmEMail'},$perlvar{'lonSysEMail'}";
7122: #$subj="LON: $currenthostid killed lond process $_";
7123: #my $result=`echo 'Killed lond process $_.' | mailto $emailto -s '$subj' > /dev/null`;
7124: #$execdir=$perlvar{'lonDaemons'};
7125: #$result=`/bin/cp $execdir/logs/lond.log $execdir/logs/lond.log.$_`;
7126: delete($children{$_});
7127: alarm(0);
7128: }
7129: }
7130: }
7131: $SIG{ALRM} = 'DEFAULT';
7132: $SIG{__DIE__} = \&catchexception;
7133: &status("Finished checking children");
7134: &logthis('Finished Checking children');
7135: }
7136:
7137: # --------------------------------------------------------------------- Logging
7138:
7139: sub logthis {
7140: my $message=shift;
7141: my $execdir=$perlvar{'lonDaemons'};
7142: my $fh=IO::File->new(">>$execdir/logs/lond.log");
7143: my $now=time;
7144: my $local=localtime($now);
7145: $lastlog=$local.': '.$message;
7146: print $fh "$local ($$): $message\n";
7147: }
7148:
7149: # ------------------------- Conditional log if $DEBUG true.
7150: sub Debug {
7151: my $message = shift;
7152: if($DEBUG) {
7153: &logthis($message);
7154: }
7155: }
7156:
7157: #
7158: # Sub to do replies to client.. this gives a hook for some
7159: # debug tracing too:
7160: # Parameters:
7161: # fd - File open on client.
7162: # reply - Text to send to client.
7163: # request - Original request from client.
7164: #
7165: #NOTE $reply must be terminated by exactly *one* \n. If $reply is a reference
7166: #this is done automatically ($$reply must not contain any \n in this case).
7167: #If $reply is a string the caller has to ensure this.
7168: sub Reply {
7169: my ($fd, $reply, $request) = @_;
7170: if (ref($reply)) {
7171: print $fd $$reply;
7172: print $fd "\n";
7173: if ($DEBUG) { Debug("Request was $request Reply was $$reply"); }
7174: } else {
7175: print $fd $reply;
7176: if ($DEBUG) { Debug("Request was $request Reply was $reply"); }
7177: }
7178: $Transactions++;
7179: }
7180:
7181:
7182: #
7183: # Sub to report a failure.
7184: # This function:
7185: # - Increments the failure statistic counters.
7186: # - Invokes Reply to send the error message to the client.
7187: # Parameters:
7188: # fd - File descriptor open on the client
7189: # reply - Reply text to emit.
7190: # request - The original request message (used by Reply
7191: # to debug if that's enabled.
7192: # Implicit outputs:
7193: # $Failures- The number of failures is incremented.
7194: # Reply (invoked here) sends a message to the
7195: # client:
7196: #
7197: sub Failure {
7198: my $fd = shift;
7199: my $reply = shift;
7200: my $request = shift;
7201:
7202: $Failures++;
7203: Reply($fd, $reply, $request); # That's simple eh?
7204: }
7205: # ------------------------------------------------------------------ Log status
7206:
7207: sub logstatus {
7208: &status("Doing logging");
7209: my $docdir=$perlvar{'lonDocRoot'};
7210: {
7211: my $fh=IO::File->new(">$docdir/lon-status/londchld/$$.txt");
7212: print $fh $status."\n".$lastlog."\n".time."\n$keymode";
7213: $fh->close();
7214: }
7215: &status("Finished $$.txt");
7216: {
7217: open(LOG,">>$docdir/lon-status/londstatus.txt");
7218: flock(LOG,LOCK_EX);
7219: print LOG $$."\t".$clientname."\t".$currenthostid."\t"
7220: .$status."\t".$lastlog."\t $keymode\n";
7221: flock(LOG,LOCK_UN);
7222: close(LOG);
7223: }
7224: &status("Finished logging");
7225: }
7226:
7227: sub initnewstatus {
7228: my $docdir=$perlvar{'lonDocRoot'};
7229: my $fh=IO::File->new(">$docdir/lon-status/londstatus.txt");
7230: my $now=time();
7231: my $local=localtime($now);
7232: print $fh "LOND status $local - parent $$\n\n";
7233: opendir(DIR,"$docdir/lon-status/londchld");
7234: while (my $filename=readdir(DIR)) {
7235: unlink("$docdir/lon-status/londchld/$filename");
7236: }
7237: closedir(DIR);
7238: }
7239:
7240: # -------------------------------------------------------------- Status setting
7241:
7242: sub status {
7243: my $what=shift;
7244: my $now=time;
7245: my $local=localtime($now);
7246: $status=$local.': '.$what;
7247: $0='lond: '.$what.' '.$local;
7248: }
7249:
7250: # -------------------------------------------------------------- Talk to lonsql
7251:
7252: sub sql_reply {
7253: my ($cmd)=@_;
7254: my $answer=&sub_sql_reply($cmd);
7255: if ($answer eq 'con_lost') { $answer=&sub_sql_reply($cmd); }
7256: return $answer;
7257: }
7258:
7259: sub sub_sql_reply {
7260: my ($cmd)=@_;
7261: my $unixsock="mysqlsock";
7262: my $peerfile="$perlvar{'lonSockDir'}/$unixsock";
7263: my $sclient=IO::Socket::UNIX->new(Peer =>"$peerfile",
7264: Type => SOCK_STREAM,
7265: Timeout => 10)
7266: or return "con_lost";
7267: print $sclient "$cmd:$currentdomainid\n";
7268: my $answer=<$sclient>;
7269: chomp($answer);
7270: if (!$answer) { $answer="con_lost"; }
7271: return $answer;
7272: }
7273:
7274: # --------------------------------------- Is this the home server of an author?
7275:
7276: sub ishome {
7277: my $author=shift;
7278: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
7279: my ($udom,$uname)=split(/\//,$author);
7280: my $proname=propath($udom,$uname);
7281: if (-e $proname) {
7282: return 'owner';
7283: } else {
7284: return 'not_owner';
7285: }
7286: }
7287:
7288: # ======================================================= Continue main program
7289: # ---------------------------------------------------- Fork once and dissociate
7290:
7291: my $fpid=fork;
7292: exit if $fpid;
7293: die "Couldn't fork: $!" unless defined ($fpid);
7294:
7295: POSIX::setsid() or die "Can't start new session: $!";
7296:
7297: # ------------------------------------------------------- Write our PID on disk
7298:
7299: my $execdir=$perlvar{'lonDaemons'};
7300: open (PIDSAVE,">$execdir/logs/lond.pid");
7301: print PIDSAVE "$$\n";
7302: close(PIDSAVE);
7303: &logthis("<font color='red'>CRITICAL: ---------- Starting ----------</font>");
7304: &status('Starting');
7305:
7306:
7307:
7308: # ----------------------------------------------------- Install signal handlers
7309:
7310:
7311: $SIG{CHLD} = \&REAPER;
7312: $SIG{INT} = $SIG{TERM} = \&HUNTSMAN;
7313: $SIG{HUP} = \&HUPSMAN;
7314: $SIG{USR1} = \&checkchildren;
7315: $SIG{USR2} = \&UpdateHosts;
7316:
7317: # Read the host hashes:
7318: &Apache::lonnet::load_hosts_tab();
7319: my %iphost = &Apache::lonnet::get_iphost(1);
7320:
7321: $dist=`$perlvar{'lonDaemons'}/distprobe`;
7322:
7323: my $arch = `uname -i`;
7324: chomp($arch);
7325: if ($arch eq 'unknown') {
7326: $arch = `uname -m`;
7327: chomp($arch);
7328: }
7329:
7330: unless (lonssl::Read_Connect_Config(\%secureconf,\%crlchecked,\%perlvar) eq 'ok') {
7331: &logthis('<font color="blue">No connectionrules table. Will fallback to loncapa.conf</font>');
7332: }
7333:
7334: # --------------------------------------------------------------
7335: # Accept connections. When a connection comes in, it is validated
7336: # and if good, a child process is created to process transactions
7337: # along the connection.
7338:
7339: while (1) {
7340: &status('Starting accept');
7341: $client = $server->accept() or next;
7342: &status('Accepted '.$client.' off to spawn');
7343: make_new_child($client);
7344: &status('Finished spawning');
7345: }
7346:
7347: sub make_new_child {
7348: my $pid;
7349: # my $cipher; # Now global
7350: my $sigset;
7351:
7352: $client = shift;
7353: &status('Starting new child '.$client);
7354: &logthis('<font color="green"> Attempting to start child ('.$client.
7355: ")</font>");
7356: # block signal for fork
7357: $sigset = POSIX::SigSet->new(SIGINT);
7358: sigprocmask(SIG_BLOCK, $sigset)
7359: or die "Can't block SIGINT for fork: $!\n";
7360:
7361: die "fork: $!" unless defined ($pid = fork);
7362:
7363: $client->sockopt(SO_KEEPALIVE, 1); # Enable monitoring of
7364: # connection liveness.
7365:
7366: #
7367: # Figure out who we're talking to so we can record the peer in
7368: # the pid hash.
7369: #
7370: my $caller = getpeername($client);
7371: my ($port,$iaddr);
7372: if (defined($caller) && length($caller) > 0) {
7373: ($port,$iaddr)=unpack_sockaddr_in($caller);
7374: } else {
7375: &logthis("Unable to determine who caller was, getpeername returned nothing");
7376: }
7377: if (defined($iaddr)) {
7378: $clientip = inet_ntoa($iaddr);
7379: Debug("Connected with $clientip");
7380: } else {
7381: &logthis("Unable to determine clientip");
7382: $clientip='Unavailable';
7383: }
7384:
7385: if ($pid) {
7386: # Parent records the child's birth and returns.
7387: sigprocmask(SIG_UNBLOCK, $sigset)
7388: or die "Can't unblock SIGINT for fork: $!\n";
7389: $children{$pid} = $clientip;
7390: &status('Started child '.$pid);
7391: close($client);
7392: return;
7393: } else {
7394: # Child can *not* return from this subroutine.
7395: $SIG{INT} = 'DEFAULT'; # make SIGINT kill us as it did before
7396: $SIG{CHLD} = 'DEFAULT'; #make this default so that pwauth returns
7397: #don't get intercepted
7398: $SIG{USR1}= \&logstatus;
7399: $SIG{ALRM}= \&timeout;
7400: #
7401: # Block sigpipe as it gets thrownon socket disconnect and we want to
7402: # deal with that as a read faiure instead.
7403: #
7404: my $blockset = POSIX::SigSet->new(SIGPIPE);
7405: sigprocmask(SIG_BLOCK, $blockset);
7406:
7407: $lastlog='Forked ';
7408: $status='Forked';
7409:
7410: # unblock signals
7411: sigprocmask(SIG_UNBLOCK, $sigset)
7412: or die "Can't unblock SIGINT for fork: $!\n";
7413:
7414: # my $tmpsnum=0; # Now global
7415: #---------------------------------------------------- kerberos 5 initialization
7416: &Authen::Krb5::init_context();
7417:
7418: my $no_ets;
7419: if ($dist =~ /^(?:centos|rhes|scientific)(\d+)$/) {
7420: if ($1 >= 7) {
7421: $no_ets = 1;
7422: }
7423: } elsif ($dist =~ /^suse(\d+\.\d+)$/) {
7424: if (($1 eq '9.3') || ($1 >= 12.2)) {
7425: $no_ets = 1;
7426: }
7427: } elsif ($dist =~ /^sles(\d+)$/) {
7428: if ($1 > 11) {
7429: $no_ets = 1;
7430: }
7431: } elsif ($dist =~ /^fedora(\d+)$/) {
7432: if ($1 < 7) {
7433: $no_ets = 1;
7434: }
7435: }
7436: unless ($no_ets) {
7437: &Authen::Krb5::init_ets();
7438: }
7439:
7440: &status('Accepted connection');
7441: # =============================================================================
7442: # do something with the connection
7443: # -----------------------------------------------------------------------------
7444: # see if we know client and 'check' for spoof IP by ineffective challenge
7445:
7446: my $outsideip=$clientip;
7447: if ($clientip eq '127.0.0.1') {
7448: $outsideip=&Apache::lonnet::get_host_ip($perlvar{'lonHostID'});
7449: }
7450: &ReadManagerTable();
7451: my $clientrec=defined(&Apache::lonnet::get_hosts_from_ip($outsideip));
7452: my $ismanager=($managers{$outsideip} ne undef);
7453: $clientname = "[unknown]";
7454: if($clientrec) { # Establish client type.
7455: $ConnectionType = "client";
7456: $clientname = (&Apache::lonnet::get_hosts_from_ip($outsideip))[-1];
7457: if($ismanager) {
7458: $ConnectionType = "both";
7459: }
7460: } else {
7461: $ConnectionType = "manager";
7462: $clientname = $managers{$outsideip};
7463: }
7464: my ($clientok,$clientinfoset);
7465:
7466: if ($clientrec || $ismanager) {
7467: &status("Waiting for init from $clientip $clientname");
7468: &logthis('<font color="yellow">INFO: Connection, '.
7469: $clientip.
7470: " ($clientname) connection type = $ConnectionType </font>" );
7471: &status("Connecting $clientip ($clientname))");
7472: my $remotereq=<$client>;
7473: chomp($remotereq);
7474: Debug("Got init: $remotereq");
7475:
7476: if ($remotereq =~ /^init/) {
7477: &sethost("sethost:$perlvar{'lonHostID'}");
7478: #
7479: # If the remote is attempting a local init... give that a try:
7480: #
7481: (my $i, my $inittype, $clientversion) = split(/:/, $remotereq);
7482: # For LON-CAPA 2.9, the client session will have sent its LON-CAPA
7483: # version when initiating the connection. For LON-CAPA 2.8 and older,
7484: # the version is retrieved from the global %loncaparevs in lonnet.pm.
7485: # $clientversion contains path to keyfile if $inittype eq 'local'
7486: # it's overridden below in this case
7487: $clientversion ||= $Apache::lonnet::loncaparevs{$clientname};
7488:
7489: # If the connection type is ssl, but I didn't get my
7490: # certificate files yet, then I'll drop back to
7491: # insecure (if allowed).
7492:
7493: if ($inittype eq "ssl") {
7494: my $context;
7495: if ($clientsamedom) {
7496: $context = 'dom';
7497: if ($secureconf{'connfrom'}{'dom'} eq 'no') {
7498: $inittype = "";
7499: }
7500: } elsif ($clientsameinst) {
7501: $context = 'intdom';
7502: if ($secureconf{'connfrom'}{'intdom'} eq 'no') {
7503: $inittype = "";
7504: }
7505: } else {
7506: $context = 'other';
7507: if ($secureconf{'connfrom'}{'other'} eq 'no') {
7508: $inittype = "";
7509: }
7510: }
7511: if ($inittype eq '') {
7512: &logthis("<font color=\"blue\"> Domain config set "
7513: ."to no ssl for $clientname (context: $context)"
7514: ." -- trying insecure auth</font>");
7515: }
7516: }
7517:
7518: if($inittype eq "ssl") {
7519: my ($ca, $cert) = lonssl::CertificateFile;
7520: my $kfile = lonssl::KeyFile;
7521: if((!$ca) ||
7522: (!$cert) ||
7523: (!$kfile)) {
7524: $inittype = ""; # This forces insecure attempt.
7525: &logthis("<font color=\"blue\"> Certificates not "
7526: ."installed -- trying insecure auth</font>");
7527: } else { # SSL certificates are in place so
7528: } # Leave the inittype alone.
7529: }
7530:
7531: if($inittype eq "local") {
7532: $clientversion = $perlvar{'lonVersion'};
7533: my $key = LocalConnection($client, $remotereq);
7534: if($key) {
7535: Debug("Got local key $key");
7536: $clientok = 1;
7537: my $cipherkey = pack("H32", $key);
7538: $cipher = new IDEA($cipherkey);
7539: print $client "ok:local\n";
7540: &logthis('<font color="green">'
7541: . "Successful local authentication </font>");
7542: $keymode = "local"
7543: } else {
7544: Debug("Failed to get local key");
7545: $clientok = 0;
7546: shutdown($client, 3);
7547: close $client;
7548: }
7549: } elsif ($inittype eq "ssl") {
7550: my $key = SSLConnection($client,$clientname);
7551: if ($key) {
7552: $clientok = 1;
7553: my $cipherkey = pack("H32", $key);
7554: $cipher = new IDEA($cipherkey);
7555: &logthis('<font color="green">'
7556: ."Successfull ssl authentication with $clientname </font>");
7557: $keymode = "ssl";
7558:
7559: } else {
7560: $clientok = 0;
7561: close $client;
7562: }
7563:
7564: } else {
7565: $clientinfoset = &set_client_info();
7566: my $ok = InsecureConnection($client);
7567: if($ok) {
7568: $clientok = 1;
7569: &logthis('<font color="green">'
7570: ."Successful insecure authentication with $clientname </font>");
7571: print $client "ok\n";
7572: $keymode = "insecure";
7573: } else {
7574: &logthis('<font color="yellow">'
7575: ."Attempted insecure connection disallowed </font>");
7576: close $client;
7577: $clientok = 0;
7578: }
7579: }
7580: } else {
7581: &logthis(
7582: "<font color='blue'>WARNING: "
7583: ."$clientip failed to initialize: >$remotereq< </font>");
7584: &status('No init '.$clientip);
7585: }
7586: } else {
7587: &logthis(
7588: "<font color='blue'>WARNING: Unknown client $clientip</font>");
7589: &status('Hung up on '.$clientip);
7590: }
7591:
7592: if ($clientok) {
7593: # ---------------- New known client connecting, could mean machine online again
7594: if (&Apache::lonnet::get_host_ip($currenthostid) ne $clientip
7595: && $clientip ne '127.0.0.1') {
7596: &Apache::lonnet::reconlonc($clientname);
7597: }
7598: &logthis("<font color='green'>Established connection: $clientname</font>");
7599: &status('Will listen to '.$clientname);
7600: # ------------------------------------------------------------ Process requests
7601: my $keep_going = 1;
7602: my $user_input;
7603: unless ($clientinfoset) {
7604: $clientinfoset = &set_client_info();
7605: }
7606: $clientremoteok = 0;
7607: unless ($clientsameinst) {
7608: $clientremoteok = 1;
7609: my $defdom = &Apache::lonnet::host_domain($perlvar{'lonHostID'});
7610: %clientprohibited = &get_prohibited($defdom);
7611: if ($clientintdom) {
7612: my $remsessconf = &get_usersession_config($defdom,'remotesession');
7613: if (ref($remsessconf) eq 'HASH') {
7614: if (ref($remsessconf->{'remote'}) eq 'HASH') {
7615: if (ref($remsessconf->{'remote'}->{'excludedomain'}) eq 'ARRAY') {
7616: if (grep(/^\Q$clientintdom\E$/,@{$remsessconf->{'remote'}->{'excludedomain'}})) {
7617: $clientremoteok = 0;
7618: }
7619: }
7620: if (ref($remsessconf->{'remote'}->{'includedomain'}) eq 'ARRAY') {
7621: if (grep(/^\Q$clientintdom\E$/,@{$remsessconf->{'remote'}->{'includedomain'}})) {
7622: $clientremoteok = 1;
7623: } else {
7624: $clientremoteok = 0;
7625: }
7626: }
7627: }
7628: }
7629: }
7630: }
7631: while(($user_input = get_request) && $keep_going) {
7632: alarm(120);
7633: Debug("Main: Got $user_input\n");
7634: $keep_going = &process_request($user_input);
7635: alarm(0);
7636: &status('Listening to '.$clientname." ($keymode)");
7637: }
7638:
7639: # --------------------------------------------- client unknown or fishy, refuse
7640: } else {
7641: print $client "refused\n";
7642: $client->close();
7643: &logthis("<font color='blue'>WARNING: "
7644: ."Rejected client $clientip, closing connection</font>");
7645: }
7646: }
7647:
7648: # =============================================================================
7649:
7650: &logthis("<font color='red'>CRITICAL: "
7651: ."Disconnect from $clientip ($clientname)</font>");
7652:
7653:
7654: # this exit is VERY important, otherwise the child will become
7655: # a producer of more and more children, forking yourself into
7656: # process death.
7657: exit;
7658:
7659: }
7660:
7661: #
7662: # Used to determine if a particular client is from the same domain
7663: # as the current server, or from the same internet domain.
7664: #
7665: # Optional input -- the client to check for domain and internet domain.
7666: # If not specified, defaults to the package variable: $clientname
7667: #
7668: # If called in array context will not set package variables, but will
7669: # instead return an array of two values - (a) true if client is in the
7670: # same domain as the server, and (b) true if client is in the same internet
7671: # domain.
7672: #
7673: # If called in scalar context, sets package variables for current client:
7674: #
7675: # $clienthomedom - LonCAPA domain of homeID for client.
7676: # $clientsamedom - LonCAPA domain same for this host and client.
7677: # $clientintdom - LonCAPA "internet domain" for client.
7678: # $clientsameinst - LonCAPA "internet domain" same for this host & client.
7679: #
7680: # returns 1 to indicate package variables have been set for current client.
7681: #
7682:
7683: sub set_client_info {
7684: my ($lonhost) = @_;
7685: $lonhost ||= $clientname;
7686: my $clienthost = &Apache::lonnet::hostname($lonhost);
7687: my $clientserverhomeID = &Apache::lonnet::get_server_homeID($clienthost);
7688: my $homedom = &Apache::lonnet::host_domain($clientserverhomeID);
7689: my $samedom = 0;
7690: if ($perlvar{'lonDefDom'} eq $homedom) {
7691: $samedom = 1;
7692: }
7693: my $intdom = &Apache::lonnet::internet_dom($clientserverhomeID);
7694: my $sameinst = 0;
7695: if ($intdom ne '') {
7696: my $internet_names = &Apache::lonnet::get_internet_names($currenthostid);
7697: if (ref($internet_names) eq 'ARRAY') {
7698: if (grep(/^\Q$intdom\E$/,@{$internet_names})) {
7699: $sameinst = 1;
7700: }
7701: }
7702: }
7703: if (wantarray) {
7704: return ($samedom,$sameinst);
7705: } else {
7706: $clienthomedom = $homedom;
7707: $clientsamedom = $samedom;
7708: $clientintdom = $intdom;
7709: $clientsameinst = $sameinst;
7710: return 1;
7711: }
7712: }
7713:
7714: #
7715: # Determine if a user is an author for the indicated domain.
7716: #
7717: # Parameters:
7718: # domain - domain to check in .
7719: # user - Name of user to check.
7720: #
7721: # Return:
7722: # 1 - User is an author for domain.
7723: # 0 - User is not an author for domain.
7724: sub is_author {
7725: my ($domain, $user) = @_;
7726:
7727: &Debug("is_author: $user @ $domain");
7728:
7729: my $hashref = &tie_user_hash($domain, $user, "roles",
7730: &GDBM_READER());
7731:
7732: # Author role should show up as a key /domain/_au
7733:
7734: my $value;
7735: if ($hashref) {
7736:
7737: my $key = "/$domain/_au";
7738: if (defined($hashref)) {
7739: $value = $hashref->{$key};
7740: if(!untie_user_hash($hashref)) {
7741: return 'error: ' . ($!+0)." untie (GDBM) Failed";
7742: }
7743: }
7744:
7745: if(defined($value)) {
7746: &Debug("$user @ $domain is an author");
7747: }
7748: } else {
7749: return 'error: '.($!+0)." tie (GDBM) Failed";
7750: }
7751:
7752: return defined($value);
7753: }
7754: #
7755: # Checks to see if the input roleput request was to set
7756: # an author role. If so, creates construction space
7757: # Parameters:
7758: # request - The request sent to the rolesput subchunk.
7759: # We're looking for /domain/_au
7760: # domain - The domain in which the user is having roles doctored.
7761: # user - Name of the user for which the role is being put.
7762: # authtype - The authentication type associated with the user.
7763: #
7764: sub manage_permissions {
7765: my ($request, $domain, $user, $authtype) = @_;
7766: # See if the request is of the form /$domain/_au
7767: if($request =~ /^(\/\Q$domain\E\/_au)$/) { # It's an author rolesput...
7768: my $path=$perlvar{'lonDocRoot'}."/priv/$domain";
7769: unless (-e $path) {
7770: mkdir($path);
7771: }
7772: unless (-e $path.'/'.$user) {
7773: mkdir($path.'/'.$user);
7774: }
7775: }
7776: }
7777:
7778:
7779: #
7780: # Return the full path of a user password file, whether it exists or not.
7781: # Parameters:
7782: # domain - Domain in which the password file lives.
7783: # user - name of the user.
7784: # Returns:
7785: # Full passwd path:
7786: #
7787: sub password_path {
7788: my ($domain, $user) = @_;
7789: return &propath($domain, $user).'/passwd';
7790: }
7791:
7792: # Password Filename
7793: # Returns the path to a passwd file given domain and user... only if
7794: # it exists.
7795: # Parameters:
7796: # domain - Domain in which to search.
7797: # user - username.
7798: # Returns:
7799: # - If the password file exists returns its path.
7800: # - If the password file does not exist, returns undefined.
7801: #
7802: sub password_filename {
7803: my ($domain, $user) = @_;
7804:
7805: Debug ("PasswordFilename called: dom = $domain user = $user");
7806:
7807: my $path = &password_path($domain, $user);
7808: Debug("PasswordFilename got path: $path");
7809: if(-e $path) {
7810: return $path;
7811: } else {
7812: return undef;
7813: }
7814: }
7815:
7816: #
7817: # Rewrite the contents of the user's passwd file.
7818: # Parameters:
7819: # domain - domain of the user.
7820: # name - User's name.
7821: # contents - New contents of the file.
7822: # saveold - (optional). If true save old file in a passwd.bak file.
7823: # Returns:
7824: # 0 - Failed.
7825: # 1 - Success.
7826: #
7827: sub rewrite_password_file {
7828: my ($domain, $user, $contents, $saveold) = @_;
7829:
7830: my $file = &password_filename($domain, $user);
7831: if (defined $file) {
7832: if ($saveold) {
7833: my $bakfile = $file.'.bak';
7834: if (CopyFile($file,$bakfile)) {
7835: chmod(0400,$bakfile);
7836: &logthis("Old password saved in passwd.bak for internally authenticated user: $user:$domain");
7837: } else {
7838: &logthis("Failed to save old password in passwd.bak for internally authenticated user: $user:$domain");
7839: }
7840: }
7841: my $pf = IO::File->new(">$file");
7842: if($pf) {
7843: print $pf "$contents\n";
7844: return 1;
7845: } else {
7846: return 0;
7847: }
7848: } else {
7849: return 0;
7850: }
7851:
7852: }
7853:
7854: #
7855: # get_auth_type - Determines the authorization type of a user in a domain.
7856:
7857: # Returns the authorization type or nouser if there is no such user.
7858: #
7859: sub get_auth_type {
7860: my ($domain, $user) = @_;
7861:
7862: Debug("get_auth_type( $domain, $user ) \n");
7863: my $proname = &propath($domain, $user);
7864: my $passwdfile = "$proname/passwd";
7865: if( -e $passwdfile ) {
7866: my $pf = IO::File->new($passwdfile);
7867: my $realpassword = <$pf>;
7868: chomp($realpassword);
7869: Debug("Password info = $realpassword\n");
7870: my ($authtype, $contentpwd) = split(/:/, $realpassword);
7871: Debug("Authtype = $authtype, content = $contentpwd\n");
7872: return "$authtype:$contentpwd";
7873: } else {
7874: Debug("Returning nouser");
7875: return "nouser";
7876: }
7877: }
7878:
7879: #
7880: # Validate a user given their domain, name and password. This utility
7881: # function is used by both AuthenticateHandler and ChangePasswordHandler
7882: # to validate the login credentials of a user.
7883: # Parameters:
7884: # $domain - The domain being logged into (this is required due to
7885: # the capability for multihomed systems.
7886: # $user - The name of the user being validated.
7887: # $password - The user's propoposed password.
7888: #
7889: # Returns:
7890: # 1 - The domain,user,pasword triplet corresponds to a valid
7891: # user.
7892: # 0 - The domain,user,password triplet is not a valid user.
7893: #
7894: sub validate_user {
7895: my ($domain, $user, $password, $checkdefauth) = @_;
7896:
7897: # Why negative ~pi you may well ask? Well this function is about
7898: # authentication, and therefore very important to get right.
7899: # I've initialized the flag that determines whether or not I've
7900: # validated correctly to a value it's not supposed to get.
7901: # At the end of this function. I'll ensure that it's not still that
7902: # value so we don't just wind up returning some accidental value
7903: # as a result of executing an unforseen code path that
7904: # did not set $validated. At the end of valid execution paths,
7905: # validated shoule be 1 for success or 0 for failuer.
7906:
7907: my $validated = -3.14159;
7908:
7909: # How we authenticate is determined by the type of authentication
7910: # the user has been assigned. If the authentication type is
7911: # "nouser", the user does not exist so we will return 0.
7912:
7913: my $contents = &get_auth_type($domain, $user);
7914: my ($howpwd, $contentpwd) = split(/:/, $contents);
7915:
7916: my $null = pack("C",0); # Used by kerberos auth types.
7917:
7918: if ($howpwd eq 'nouser') {
7919: if ($checkdefauth) {
7920: my %domdefaults = &Apache::lonnet::get_domain_defaults($domain);
7921: if ($domdefaults{'auth_def'} eq 'localauth') {
7922: $howpwd = $domdefaults{'auth_def'};
7923: $contentpwd = $domdefaults{'auth_arg_def'};
7924: } elsif ((($domdefaults{'auth_def'} eq 'krb4') ||
7925: ($domdefaults{'auth_def'} eq 'krb5')) &&
7926: ($domdefaults{'auth_arg_def'} ne '')) {
7927: $howpwd = $domdefaults{'auth_def'};
7928: $contentpwd = $domdefaults{'auth_arg_def'};
7929: }
7930: }
7931: }
7932: if ($howpwd ne 'nouser') {
7933: if($howpwd eq "internal") { # Encrypted is in local password file.
7934: if (length($contentpwd) == 13) {
7935: $validated = (crypt($password,$contentpwd) eq $contentpwd);
7936: if ($validated) {
7937: my %domdefaults = &Apache::lonnet::get_domain_defaults($domain);
7938: if ($domdefaults{'intauth_switch'}) {
7939: my $ncpass = &hash_passwd($domain,$password);
7940: my $saveold;
7941: if ($domdefaults{'intauth_switch'} == 2) {
7942: $saveold = 1;
7943: }
7944: if (&rewrite_password_file($domain,$user,"$howpwd:$ncpass",$saveold)) {
7945: &update_passwd_history($user,$domain,$howpwd,'conversion');
7946: &logthis("Validated password hashed with bcrypt for $user:$domain");
7947: }
7948: }
7949: }
7950: } else {
7951: $validated = &check_internal_passwd($password,$contentpwd,$domain,$user);
7952: }
7953: }
7954: elsif ($howpwd eq "unix") { # User is a normal unix user.
7955: $contentpwd = (getpwnam($user))[1];
7956: if($contentpwd) {
7957: if($contentpwd eq 'x') { # Shadow password file...
7958: my $pwauth_path = "/usr/local/sbin/pwauth";
7959: open PWAUTH, "|$pwauth_path" or
7960: die "Cannot invoke authentication";
7961: print PWAUTH "$user\n$password\n";
7962: close PWAUTH;
7963: $validated = ! $?;
7964:
7965: } else { # Passwords in /etc/passwd.
7966: $validated = (crypt($password,
7967: $contentpwd) eq $contentpwd);
7968: }
7969: } else {
7970: $validated = 0;
7971: }
7972: } elsif ($howpwd eq "krb4") { # user is in kerberos 4 auth. domain.
7973: my $checkwithkrb5 = 0;
7974: if ($dist =~/^fedora(\d+)$/) {
7975: if ($1 > 11) {
7976: $checkwithkrb5 = 1;
7977: }
7978: } elsif ($dist =~ /^suse([\d.]+)$/) {
7979: if ($1 > 11.1) {
7980: $checkwithkrb5 = 1;
7981: }
7982: }
7983: if ($checkwithkrb5) {
7984: $validated = &krb5_authen($password,$null,$user,$contentpwd);
7985: } else {
7986: $validated = &krb4_authen($password,$null,$user,$contentpwd);
7987: }
7988: } elsif ($howpwd eq "krb5") { # User is in kerberos 5 auth. domain.
7989: $validated = &krb5_authen($password,$null,$user,$contentpwd);
7990: } elsif ($howpwd eq "localauth") {
7991: # Authenticate via installation specific authentcation method:
7992: $validated = &localauth::localauth($user,
7993: $password,
7994: $contentpwd,
7995: $domain);
7996: if ($validated < 0) {
7997: &logthis("localauth for $contentpwd $user:$domain returned a $validated");
7998: $validated = 0;
7999: }
8000: } else { # Unrecognized auth is also bad.
8001: $validated = 0;
8002: }
8003: } else {
8004: $validated = 0;
8005: }
8006: #
8007: # $validated has the correct stat of the authentication:
8008: #
8009:
8010: unless ($validated != -3.14159) {
8011: # I >really really< want to know if this happens.
8012: # since it indicates that user authentication is badly
8013: # broken in some code path.
8014: #
8015: die "ValidateUser - failed to set the value of validated $domain, $user $password";
8016: }
8017: return $validated;
8018: }
8019:
8020: sub check_internal_passwd {
8021: my ($plainpass,$stored,$domain,$user) = @_;
8022: my (undef,$method,@rest) = split(/!/,$stored);
8023: if ($method eq 'bcrypt') {
8024: my $result = &hash_passwd($domain,$plainpass,@rest);
8025: if ($result ne $stored) {
8026: return 0;
8027: }
8028: my %domdefaults = &Apache::lonnet::get_domain_defaults($domain);
8029: if ($domdefaults{'intauth_check'}) {
8030: # Upgrade to a larger number of rounds if necessary
8031: my $defaultcost = $domdefaults{'intauth_cost'};
8032: if (($defaultcost eq '') || ($defaultcost =~ /D/)) {
8033: $defaultcost = 10;
8034: }
8035: if (int($rest[0])<int($defaultcost)) {
8036: if ($domdefaults{'intauth_check'} == 1) {
8037: my $ncpass = &hash_passwd($domain,$plainpass);
8038: if (&rewrite_password_file($domain,$user,"internal:$ncpass")) {
8039: &update_passwd_history($user,$domain,'internal','update cost');
8040: &logthis("Validated password hashed with bcrypt for $user:$domain");
8041: }
8042: return 1;
8043: } elsif ($domdefaults{'intauth_check'} == 2) {
8044: return 0;
8045: }
8046: }
8047: } else {
8048: return 1;
8049: }
8050: }
8051: return 0;
8052: }
8053:
8054: sub get_last_authchg {
8055: my ($domain,$user) = @_;
8056: my $lastmod;
8057: my $logname = &propath($domain,$user).'/passwd.log';
8058: if (-e "$logname") {
8059: $lastmod = (stat("$logname"))[9];
8060: }
8061: return $lastmod;
8062: }
8063:
8064: sub krb4_authen {
8065: my ($password,$null,$user,$contentpwd) = @_;
8066: my $validated = 0;
8067: if (!($password =~ /$null/) ) { # Null password not allowed.
8068: eval {
8069: require Authen::Krb4;
8070: };
8071: if (!$@) {
8072: my $k4error = &Authen::Krb4::get_pw_in_tkt($user,
8073: "",
8074: $contentpwd,,
8075: 'krbtgt',
8076: $contentpwd,
8077: 1,
8078: $password);
8079: if(!$k4error) {
8080: $validated = 1;
8081: } else {
8082: $validated = 0;
8083: &logthis('krb4: '.$user.', '.$contentpwd.', '.
8084: &Authen::Krb4::get_err_txt($Authen::Krb4::error));
8085: }
8086: } else {
8087: $validated = krb5_authen($password,$null,$user,$contentpwd);
8088: }
8089: }
8090: return $validated;
8091: }
8092:
8093: sub krb5_authen {
8094: my ($password,$null,$user,$contentpwd) = @_;
8095: my $validated = 0;
8096: if(!($password =~ /$null/)) { # Null password not allowed.
8097: my $krbclient = &Authen::Krb5::parse_name($user.'@'
8098: .$contentpwd);
8099: my $krbservice = "krbtgt/".$contentpwd."\@".$contentpwd;
8100: my $krbserver = &Authen::Krb5::parse_name($krbservice);
8101: my $credentials= &Authen::Krb5::cc_default();
8102: $credentials->initialize(&Authen::Krb5::parse_name($user.'@'
8103: .$contentpwd));
8104: my $krbreturn;
8105: if (exists(&Authen::Krb5::get_init_creds_password)) {
8106: $krbreturn =
8107: &Authen::Krb5::get_init_creds_password($krbclient,$password,
8108: $krbservice);
8109: $validated = (ref($krbreturn) eq 'Authen::Krb5::Creds');
8110: } else {
8111: $krbreturn =
8112: &Authen::Krb5::get_in_tkt_with_password($krbclient,$krbserver,
8113: $password,$credentials);
8114: $validated = ($krbreturn == 1);
8115: }
8116: if (!$validated) {
8117: &logthis('krb5: '.$user.', '.$contentpwd.', '.
8118: &Authen::Krb5::error());
8119: }
8120: }
8121: return $validated;
8122: }
8123:
8124: sub addline {
8125: my ($fname,$hostid,$ip,$newline)=@_;
8126: my $contents;
8127: my $found=0;
8128: my $expr='^'.quotemeta($hostid).':'.quotemeta($ip).':';
8129: my $sh;
8130: if ($sh=IO::File->new("$fname.subscription")) {
8131: while (my $subline=<$sh>) {
8132: if ($subline !~ /$expr/) {$contents.= $subline;} else {$found=1;}
8133: }
8134: $sh->close();
8135: }
8136: $sh=IO::File->new(">$fname.subscription");
8137: if ($contents) { print $sh $contents; }
8138: if ($newline) { print $sh $newline; }
8139: $sh->close();
8140: return $found;
8141: }
8142:
8143: sub get_chat {
8144: my ($cdom,$cname,$udom,$uname,$group)=@_;
8145:
8146: my @entries=();
8147: my $namespace = 'nohist_chatroom';
8148: my $namespace_inroom = 'nohist_inchatroom';
8149: if ($group ne '') {
8150: $namespace .= '_'.$group;
8151: $namespace_inroom .= '_'.$group;
8152: }
8153: my $hashref = &tie_user_hash($cdom, $cname, $namespace,
8154: &GDBM_READER());
8155: if ($hashref) {
8156: @entries=map { $_.':'.$hashref->{$_} } sort(keys(%$hashref));
8157: &untie_user_hash($hashref);
8158: }
8159: my @participants=();
8160: my $cutoff=time-60;
8161: $hashref = &tie_user_hash($cdom, $cname, $namespace_inroom,
8162: &GDBM_WRCREAT());
8163: if ($hashref) {
8164: $hashref->{$uname.':'.$udom}=time;
8165: foreach my $user (sort(keys(%$hashref))) {
8166: if ($hashref->{$user}>$cutoff) {
8167: push(@participants, 'active_participant:'.$user);
8168: }
8169: }
8170: &untie_user_hash($hashref);
8171: }
8172: return (@participants,@entries);
8173: }
8174:
8175: sub chat_add {
8176: my ($cdom,$cname,$newchat,$group)=@_;
8177: my @entries=();
8178: my $time=time;
8179: my $namespace = 'nohist_chatroom';
8180: my $logfile = 'chatroom.log';
8181: if ($group ne '') {
8182: $namespace .= '_'.$group;
8183: $logfile = 'chatroom_'.$group.'.log';
8184: }
8185: my $hashref = &tie_user_hash($cdom, $cname, $namespace,
8186: &GDBM_WRCREAT());
8187: if ($hashref) {
8188: @entries=map { $_.':'.$hashref->{$_} } sort(keys(%$hashref));
8189: my ($lastid)=($entries[$#entries]=~/^(\w+)\:/);
8190: my ($thentime,$idnum)=split(/\_/,$lastid);
8191: my $newid=$time.'_000000';
8192: if ($thentime==$time) {
8193: $idnum=~s/^0+//;
8194: $idnum++;
8195: $idnum=substr('000000'.$idnum,-6,6);
8196: $newid=$time.'_'.$idnum;
8197: }
8198: $hashref->{$newid}=$newchat;
8199: my $expired=$time-3600;
8200: foreach my $comment (keys(%$hashref)) {
8201: my ($thistime) = ($comment=~/(\d+)\_/);
8202: if ($thistime<$expired) {
8203: delete $hashref->{$comment};
8204: }
8205: }
8206: {
8207: my $proname=&propath($cdom,$cname);
8208: if (open(CHATLOG,">>$proname/$logfile")) {
8209: print CHATLOG ("$time:".&unescape($newchat)."\n");
8210: }
8211: close(CHATLOG);
8212: }
8213: &untie_user_hash($hashref);
8214: }
8215: }
8216:
8217: sub unsub {
8218: my ($fname,$clientip)=@_;
8219: my $result;
8220: my $unsubs = 0; # Number of successful unsubscribes:
8221:
8222:
8223: # An old way subscriptions were handled was to have a
8224: # subscription marker file:
8225:
8226: Debug("Attempting unlink of $fname.$clientname");
8227: if (unlink("$fname.$clientname")) {
8228: $unsubs++; # Successful unsub via marker file.
8229: }
8230:
8231: # The more modern way to do it is to have a subscription list
8232: # file:
8233:
8234: if (-e "$fname.subscription") {
8235: my $found=&addline($fname,$clientname,$clientip,'');
8236: if ($found) {
8237: $unsubs++;
8238: }
8239: }
8240:
8241: # If either or both of these mechanisms succeeded in unsubscribing a
8242: # resource we can return ok:
8243:
8244: if($unsubs) {
8245: $result = "ok\n";
8246: } else {
8247: $result = "not_subscribed\n";
8248: }
8249:
8250: return $result;
8251: }
8252:
8253: sub currentversion {
8254: my $fname=shift;
8255: my $version=-1;
8256: my $ulsdir='';
8257: if ($fname=~/^(.+)\/[^\/]+$/) {
8258: $ulsdir=$1;
8259: }
8260: my ($fnamere1,$fnamere2);
8261: # remove version if already specified
8262: $fname=~s/\.\d+\.(\w+(?:\.meta)*)$/\.$1/;
8263: # get the bits that go before and after the version number
8264: if ( $fname=~/^(.*\.)(\w+(?:\.meta)*)$/ ) {
8265: $fnamere1=$1;
8266: $fnamere2='.'.$2;
8267: }
8268: if (-e $fname) { $version=1; }
8269: if (-e $ulsdir) {
8270: if(-d $ulsdir) {
8271: if (opendir(LSDIR,$ulsdir)) {
8272: my $ulsfn;
8273: while ($ulsfn=readdir(LSDIR)) {
8274: # see if this is a regular file (ignore links produced earlier)
8275: my $thisfile=$ulsdir.'/'.$ulsfn;
8276: unless (-l $thisfile) {
8277: if ($thisfile=~/\Q$fnamere1\E(\d+)\Q$fnamere2\E$/) {
8278: if ($1>$version) { $version=$1; }
8279: }
8280: }
8281: }
8282: closedir(LSDIR);
8283: $version++;
8284: }
8285: }
8286: }
8287: return $version;
8288: }
8289:
8290: sub thisversion {
8291: my $fname=shift;
8292: my $version=-1;
8293: if ($fname=~/\.(\d+)\.\w+(?:\.meta)*$/) {
8294: $version=$1;
8295: }
8296: return $version;
8297: }
8298:
8299: sub subscribe {
8300: my ($userinput,$clientip)=@_;
8301: my $result;
8302: my ($cmd,$fname)=split(/:/,$userinput,2);
8303: my $ownership=&ishome($fname);
8304: if ($ownership eq 'owner') {
8305: # explitly asking for the current version?
8306: unless (-e $fname) {
8307: my $currentversion=¤tversion($fname);
8308: if (&thisversion($fname)==$currentversion) {
8309: if ($fname=~/^(.+)\.\d+\.(\w+(?:\.meta)*)$/) {
8310: my $root=$1;
8311: my $extension=$2;
8312: symlink($root.'.'.$extension,
8313: $root.'.'.$currentversion.'.'.$extension);
8314: unless ($extension=~/\.meta$/) {
8315: symlink($root.'.'.$extension.'.meta',
8316: $root.'.'.$currentversion.'.'.$extension.'.meta');
8317: }
8318: }
8319: }
8320: }
8321: if (-e $fname) {
8322: if (-d $fname) {
8323: $result="directory\n";
8324: } else {
8325: if (-e "$fname.$clientname") {&unsub($fname,$clientip);}
8326: my $now=time;
8327: my $found=&addline($fname,$clientname,$clientip,
8328: "$clientname:$clientip:$now\n");
8329: if ($found) { $result="$fname\n"; }
8330: # if they were subscribed to only meta data, delete that
8331: # subscription, when you subscribe to a file you also get
8332: # the metadata
8333: unless ($fname=~/\.meta$/) { &unsub("$fname.meta",$clientip); }
8334: $fname=~s/\/home\/httpd\/html\/res/raw/;
8335: my $protocol = $Apache::lonnet::protocol{$perlvar{'lonHostID'}};
8336: $protocol = 'http' if ($protocol ne 'https');
8337: $fname=$protocol.'://'.&Apache::lonnet::hostname($perlvar{'lonHostID'})."/".$fname;
8338: $result="$fname\n";
8339: }
8340: } else {
8341: $result="not_found\n";
8342: }
8343: } else {
8344: $result="rejected\n";
8345: }
8346: return $result;
8347: }
8348: # Change the passwd of a unix user. The caller must have
8349: # first verified that the user is a loncapa user.
8350: #
8351: # Parameters:
8352: # user - Unix user name to change.
8353: # pass - New password for the user.
8354: # Returns:
8355: # ok - if success
8356: # other - Some meaningfule error message string.
8357: # NOTE:
8358: # invokes a setuid script to change the passwd.
8359: sub change_unix_password {
8360: my ($user, $pass) = @_;
8361:
8362: &Debug("change_unix_password");
8363: my $execdir=$perlvar{'lonDaemons'};
8364: &Debug("Opening lcpasswd pipeline");
8365: my $pf = IO::File->new("|$execdir/lcpasswd > "
8366: ."$perlvar{'lonDaemons'}"
8367: ."/logs/lcpasswd.log");
8368: print $pf "$user\n$pass\n$pass\n";
8369: close $pf;
8370: my $err = $?;
8371: return ($err < @passwderrors) ? $passwderrors[$err] :
8372: "pwchange_falure - unknown error";
8373:
8374:
8375: }
8376:
8377:
8378: sub make_passwd_file {
8379: my ($uname,$udom,$umode,$npass,$passfilename,$action)=@_;
8380: my $result="ok";
8381: if ($umode eq 'krb4' or $umode eq 'krb5') {
8382: {
8383: my $pf = IO::File->new(">$passfilename");
8384: if ($pf) {
8385: print $pf "$umode:$npass\n";
8386: &update_passwd_history($uname,$udom,$umode,$action);
8387: } else {
8388: $result = "pass_file_failed_error";
8389: }
8390: }
8391: } elsif ($umode eq 'internal') {
8392: my $ncpass = &hash_passwd($udom,$npass);
8393: {
8394: &Debug("Creating internal auth");
8395: my $pf = IO::File->new(">$passfilename");
8396: if($pf) {
8397: print $pf "internal:$ncpass\n";
8398: &update_passwd_history($uname,$udom,$umode,$action);
8399: } else {
8400: $result = "pass_file_failed_error";
8401: }
8402: }
8403: } elsif ($umode eq 'localauth') {
8404: {
8405: my $pf = IO::File->new(">$passfilename");
8406: if($pf) {
8407: print $pf "localauth:$npass\n";
8408: &update_passwd_history($uname,$udom,$umode,$action);
8409: } else {
8410: $result = "pass_file_failed_error";
8411: }
8412: }
8413: } elsif ($umode eq 'unix') {
8414: &logthis(">>>Attempt to create unix account blocked -- unix auth not available for new users.");
8415: $result="no_new_unix_accounts";
8416: } elsif ($umode eq 'none') {
8417: {
8418: my $pf = IO::File->new("> $passfilename");
8419: if($pf) {
8420: print $pf "none:\n";
8421: } else {
8422: $result = "pass_file_failed_error";
8423: }
8424: }
8425: } elsif ($umode eq 'lti') {
8426: my $pf = IO::File->new(">$passfilename");
8427: if($pf) {
8428: print $pf "lti:\n";
8429: &update_passwd_history($uname,$udom,$umode,$action);
8430: } else {
8431: $result = "pass_file_failed_error";
8432: }
8433: } else {
8434: $result="auth_mode_error";
8435: }
8436: return $result;
8437: }
8438:
8439: sub convert_photo {
8440: my ($start,$dest)=@_;
8441: system("convert $start $dest");
8442: }
8443:
8444: sub sethost {
8445: my ($remotereq) = @_;
8446: my (undef,$hostid)=split(/:/,$remotereq);
8447: # ignore sethost if we are already correct
8448: if ($hostid eq $currenthostid) {
8449: return 'ok';
8450: }
8451:
8452: if (!defined($hostid)) { $hostid=$perlvar{'lonHostID'}; }
8453: if (&Apache::lonnet::get_host_ip($perlvar{'lonHostID'})
8454: eq &Apache::lonnet::get_host_ip($hostid)) {
8455: $currenthostid =$hostid;
8456: $currentdomainid=&Apache::lonnet::host_domain($hostid);
8457: # &logthis("Setting hostid to $hostid, and domain to $currentdomainid");
8458: } else {
8459: &logthis("Requested host id $hostid not an alias of ".
8460: $perlvar{'lonHostID'}." refusing connection");
8461: return 'unable_to_set';
8462: }
8463: return 'ok';
8464: }
8465:
8466: sub version {
8467: my ($userinput)=@_;
8468: $remoteVERSION=(split(/:/,$userinput))[1];
8469: return "version:$VERSION";
8470: }
8471:
8472: sub get_usersession_config {
8473: my ($dom,$name) = @_;
8474: my ($usersessionconf,$cached)=&Apache::lonnet::is_cached_new($name,$dom);
8475: if (defined($cached)) {
8476: return $usersessionconf;
8477: } else {
8478: my %domconfig = &Apache::lonnet::get_dom('configuration',['usersessions'],$dom);
8479: &Apache::lonnet::do_cache_new($name,$dom,$domconfig{'usersessions'},3600);
8480: return $domconfig{'usersessions'};
8481: }
8482: return;
8483: }
8484:
8485: sub get_usersearch_config {
8486: my ($dom,$name) = @_;
8487: my ($usersearchconf,$cached)=&Apache::lonnet::is_cached_new($name,$dom);
8488: if (defined($cached)) {
8489: return $usersearchconf;
8490: } else {
8491: my %domconfig = &Apache::lonnet::get_dom('configuration',['directorysrch'],$dom);
8492: &Apache::lonnet::do_cache_new($name,$dom,$domconfig{'directorysrch'},600);
8493: return $domconfig{'directorysrch'};
8494: }
8495: return;
8496: }
8497:
8498: sub get_prohibited {
8499: my ($dom) = @_;
8500: my $name = 'trust';
8501: my ($trustconfig,$cached)=&Apache::lonnet::is_cached_new($name,$dom);
8502: unless (defined($cached)) {
8503: my %domconfig = &Apache::lonnet::get_dom('configuration',['trust'],$dom);
8504: &Apache::lonnet::do_cache_new($name,$dom,$domconfig{'trust'},3600);
8505: $trustconfig = $domconfig{'trust'};
8506: }
8507: my %prohibited;
8508: if (ref($trustconfig)) {
8509: foreach my $prefix (keys(%{$trustconfig})) {
8510: if (ref($trustconfig->{$prefix}) eq 'HASH') {
8511: my $reject;
8512: if (ref($trustconfig->{$prefix}->{'exc'}) eq 'ARRAY') {
8513: if (grep(/^\Q$clientintdom\E$/,@{$trustconfig->{$prefix}->{'exc'}})) {
8514: $reject = 1;
8515: }
8516: }
8517: if (ref($trustconfig->{$prefix}->{'inc'}) eq 'ARRAY') {
8518: if (grep(/^\Q$clientintdom\E$/,@{$trustconfig->{$prefix}->{'inc'}})) {
8519: $reject = 0;
8520: } else {
8521: $reject = 1;
8522: }
8523: }
8524: if ($reject) {
8525: $prohibited{$prefix} = 1;
8526: }
8527: }
8528: }
8529: }
8530: return %prohibited;
8531: }
8532:
8533: sub distro_and_arch {
8534: return $dist.':'.$arch;
8535: }
8536:
8537: # ----------------------------------- POD (plain old documentation, CPAN style)
8538:
8539: =head1 NAME
8540:
8541: lond - "LON Daemon" Server (port "LOND" 5663)
8542:
8543: =head1 SYNOPSIS
8544:
8545: Usage: B<lond>
8546:
8547: Should only be run as user=www. This is a command-line script which
8548: is invoked by B<loncron>. There is no expectation that a typical user
8549: will manually start B<lond> from the command-line. (In other words,
8550: DO NOT START B<lond> YOURSELF.)
8551:
8552: =head1 DESCRIPTION
8553:
8554: There are two characteristics associated with the running of B<lond>,
8555: PROCESS MANAGEMENT (starting, stopping, handling child processes)
8556: and SERVER-SIDE ACTIVITIES (password authentication, user creation,
8557: subscriptions, etc). These are described in two large
8558: sections below.
8559:
8560: B<PROCESS MANAGEMENT>
8561:
8562: Preforker - server who forks first. Runs as a daemon. HUPs.
8563: Uses IDEA encryption
8564:
8565: B<lond> forks off children processes that correspond to the other servers
8566: in the network. Management of these processes can be done at the
8567: parent process level or the child process level.
8568:
8569: B<logs/lond.log> is the location of log messages.
8570:
8571: The process management is now explained in terms of linux shell commands,
8572: subroutines internal to this code, and signal assignments:
8573:
8574: =over 4
8575:
8576: =item *
8577:
8578: PID is stored in B<logs/lond.pid>
8579:
8580: This is the process id number of the parent B<lond> process.
8581:
8582: =item *
8583:
8584: SIGTERM and SIGINT
8585:
8586: Parent signal assignment:
8587: $SIG{INT} = $SIG{TERM} = \&HUNTSMAN;
8588:
8589: Child signal assignment:
8590: $SIG{INT} = 'DEFAULT'; (and SIGTERM is DEFAULT also)
8591: (The child dies and a SIGALRM is sent to parent, awaking parent from slumber
8592: to restart a new child.)
8593:
8594: Command-line invocations:
8595: B<kill> B<-s> SIGTERM I<PID>
8596: B<kill> B<-s> SIGINT I<PID>
8597:
8598: Subroutine B<HUNTSMAN>:
8599: This is only invoked for the B<lond> parent I<PID>.
8600: This kills all the children, and then the parent.
8601: The B<lonc.pid> file is cleared.
8602:
8603: =item *
8604:
8605: SIGHUP
8606:
8607: Current bug:
8608: This signal can only be processed the first time
8609: on the parent process. Subsequent SIGHUP signals
8610: have no effect.
8611:
8612: Parent signal assignment:
8613: $SIG{HUP} = \&HUPSMAN;
8614:
8615: Child signal assignment:
8616: none (nothing happens)
8617:
8618: Command-line invocations:
8619: B<kill> B<-s> SIGHUP I<PID>
8620:
8621: Subroutine B<HUPSMAN>:
8622: This is only invoked for the B<lond> parent I<PID>,
8623: This kills all the children, and then the parent.
8624: The B<lond.pid> file is cleared.
8625:
8626: =item *
8627:
8628: SIGUSR1
8629:
8630: Parent signal assignment:
8631: $SIG{USR1} = \&USRMAN;
8632:
8633: Child signal assignment:
8634: $SIG{USR1}= \&logstatus;
8635:
8636: Command-line invocations:
8637: B<kill> B<-s> SIGUSR1 I<PID>
8638:
8639: Subroutine B<USRMAN>:
8640: When invoked for the B<lond> parent I<PID>,
8641: SIGUSR1 is sent to all the children, and the status of
8642: each connection is logged.
8643:
8644: =item *
8645:
8646: SIGUSR2
8647:
8648: Parent Signal assignment:
8649: $SIG{USR2} = \&UpdateHosts
8650:
8651: Child signal assignment:
8652: NONE
8653:
8654:
8655: =item *
8656:
8657: SIGCHLD
8658:
8659: Parent signal assignment:
8660: $SIG{CHLD} = \&REAPER;
8661:
8662: Child signal assignment:
8663: none
8664:
8665: Command-line invocations:
8666: B<kill> B<-s> SIGCHLD I<PID>
8667:
8668: Subroutine B<REAPER>:
8669: This is only invoked for the B<lond> parent I<PID>.
8670: Information pertaining to the child is removed.
8671: The socket port is cleaned up.
8672:
8673: =back
8674:
8675: B<SERVER-SIDE ACTIVITIES>
8676:
8677: Server-side information can be accepted in an encrypted or non-encrypted
8678: method.
8679:
8680: =over 4
8681:
8682: =item ping
8683:
8684: Query a client in the hosts.tab table; "Are you there?"
8685:
8686: =item pong
8687:
8688: Respond to a ping query.
8689:
8690: =item ekey
8691:
8692: Read in encrypted key, make cipher. Respond with a buildkey.
8693:
8694: =item load
8695:
8696: Respond with CPU load based on a computation upon /proc/loadavg.
8697:
8698: =item currentauth
8699:
8700: Reply with current authentication information (only over an
8701: encrypted channel).
8702:
8703: =item auth
8704:
8705: Only over an encrypted channel, reply as to whether a user's
8706: authentication information can be validated.
8707:
8708: =item passwd
8709:
8710: Allow for a password to be set.
8711:
8712: =item makeuser
8713:
8714: Make a user.
8715:
8716: =item changeuserauth
8717:
8718: Allow for authentication mechanism and password to be changed.
8719:
8720: =item home
8721:
8722: Respond to a question "are you the home for a given user?"
8723:
8724: =item update
8725:
8726: Update contents of a subscribed resource.
8727:
8728: =item unsubscribe
8729:
8730: The server is unsubscribing from a resource.
8731:
8732: =item subscribe
8733:
8734: The server is subscribing to a resource.
8735:
8736: =item log
8737:
8738: Place in B<logs/lond.log>
8739:
8740: =item put
8741:
8742: stores hash in namespace
8743:
8744: =item rolesput
8745:
8746: put a role into a user's environment
8747:
8748: =item get
8749:
8750: returns hash with keys from array
8751: reference filled in from namespace
8752:
8753: =item eget
8754:
8755: returns hash with keys from array
8756: reference filled in from namesp (encrypts the return communication)
8757:
8758: =item rolesget
8759:
8760: get a role from a user's environment
8761:
8762: =item del
8763:
8764: deletes keys out of array from namespace
8765:
8766: =item keys
8767:
8768: returns namespace keys
8769:
8770: =item dump
8771:
8772: dumps the complete (or key matching regexp) namespace into a hash
8773:
8774: =item store
8775:
8776: stores hash permanently
8777: for this url; hashref needs to be given and should be a \%hashname; the
8778: remaining args aren't required and if they aren't passed or are '' they will
8779: be derived from the ENV
8780:
8781: =item restore
8782:
8783: returns a hash for a given url
8784:
8785: =item querysend
8786:
8787: Tells client about the lonsql process that has been launched in response
8788: to a sent query.
8789:
8790: =item queryreply
8791:
8792: Accept information from lonsql and make appropriate storage in temporary
8793: file space.
8794:
8795: =item idput
8796:
8797: Defines usernames as corresponding to IDs. (These "IDs" are unique identifiers
8798: for each student, defined perhaps by the institutional Registrar.)
8799:
8800: =item idget
8801:
8802: Returns usernames corresponding to IDs. (These "IDs" are unique identifiers
8803: for each student, defined perhaps by the institutional Registrar.)
8804:
8805: =item iddel
8806:
8807: Deletes one or more ids in a domain's id database.
8808:
8809: =item tmpput
8810:
8811: Accept and store information in temporary space.
8812:
8813: =item tmpget
8814:
8815: Send along temporarily stored information.
8816:
8817: =item ls
8818:
8819: List part of a user's directory.
8820:
8821: =item pushtable
8822:
8823: Pushes a file in /home/httpd/lonTab directory. Currently limited to:
8824: hosts.tab and domain.tab. The old file is copied to *.tab.backup but
8825: must be restored manually in case of a problem with the new table file.
8826: pushtable requires that the request be encrypted and validated via
8827: ValidateManager. The form of the command is:
8828: enc:pushtable tablename <tablecontents> \n
8829: where pushtable, tablename and <tablecontents> will be encrypted, but \n is a
8830: cleartext newline.
8831:
8832: =item Hanging up (exit or init)
8833:
8834: What to do when a client tells the server that they (the client)
8835: are leaving the network.
8836:
8837: =item unknown command
8838:
8839: If B<lond> is sent an unknown command (not in the list above),
8840: it replys to the client "unknown_cmd".
8841:
8842:
8843: =item UNKNOWN CLIENT
8844:
8845: If the anti-spoofing algorithm cannot verify the client,
8846: the client is rejected (with a "refused" message sent
8847: to the client, and the connection is closed.
8848:
8849: =back
8850:
8851: =head1 PREREQUISITES
8852:
8853: IO::Socket
8854: IO::File
8855: Apache::File
8856: POSIX
8857: Crypt::IDEA
8858: GDBM_File
8859: Authen::Krb4
8860: Authen::Krb5
8861:
8862: =head1 COREQUISITES
8863:
8864: none
8865:
8866: =head1 OSNAMES
8867:
8868: linux
8869:
8870: =head1 SCRIPT CATEGORIES
8871:
8872: Server/Process
8873:
8874: =cut
8875:
8876:
8877: =pod
8878:
8879: =head1 LOG MESSAGES
8880:
8881: The messages below can be emitted in the lond log. This log is located
8882: in ~httpd/perl/logs/lond.log Many log messages have HTML encapsulation
8883: to provide coloring if examined from inside a web page. Some do not.
8884: Where color is used, the colors are; Red for sometihhng to get excited
8885: about and to follow up on. Yellow for something to keep an eye on to
8886: be sure it does not get worse, Green,and Blue for informational items.
8887:
8888: In the discussions below, sometimes reference is made to ~httpd
8889: when describing file locations. There isn't really an httpd
8890: user, however there is an httpd directory that gets installed in the
8891: place that user home directories go. On linux, this is usually
8892: (always?) /home/httpd.
8893:
8894:
8895: Some messages are colorless. These are usually (not always)
8896: Green/Blue color level messages.
8897:
8898: =over 2
8899:
8900: =item (Red) LocalConnection rejecting non local: <ip> ne 127.0.0.1
8901:
8902: A local connection negotiation was attempted by
8903: a host whose IP address was not 127.0.0.1.
8904: The socket is closed and the child will exit.
8905: lond has three ways to establish an encyrption
8906: key with a client:
8907:
8908: =over 2
8909:
8910: =item local
8911:
8912: The key is written and read from a file.
8913: This is only valid for connections from localhost.
8914:
8915: =item insecure
8916:
8917: The key is generated by the server and
8918: transmitted to the client.
8919:
8920: =item ssl (secure)
8921:
8922: An ssl connection is negotiated with the client,
8923: the key is generated by the server and sent to the
8924: client across this ssl connection before the
8925: ssl connectionis terminated and clear text
8926: transmission resumes.
8927:
8928: =back
8929:
8930: =item (Red) LocalConnection: caller is insane! init = <init> and type = <type>
8931:
8932: The client is local but has not sent an initialization
8933: string that is the literal "init:local" The connection
8934: is closed and the child exits.
8935:
8936: =item Red CRITICAL Can't get key file <error>
8937:
8938: SSL key negotiation is being attempted but the call to
8939: lonssl::KeyFile failed. This usually means that the
8940: configuration file is not correctly defining or protecting
8941: the directories/files lonCertificateDirectory or
8942: lonnetPrivateKey
8943: <error> is a string that describes the reason that
8944: the key file could not be located.
8945:
8946: =item (Red) CRITICAL Can't get certificates <error>
8947:
8948: SSL key negotiation failed because we were not able to retrives our certificate
8949: or the CA's certificate in the call to lonssl::CertificateFile
8950: <error> is the textual reason this failed. Usual reasons:
8951:
8952: =over 2
8953:
8954: =item Apache config file for loncapa incorrect:
8955:
8956: one of the variables
8957: lonCertificateDirectory, lonnetCertificateAuthority, or lonnetCertificate
8958: undefined or incorrect
8959:
8960: =item Permission error:
8961:
8962: The directory pointed to by lonCertificateDirectory is not readable by lond
8963:
8964: =item Permission error:
8965:
8966: Files in the directory pointed to by lonCertificateDirectory are not readable by lond.
8967:
8968: =item Installation error:
8969:
8970: Either the certificate authority file or the certificate have not
8971: been installed in lonCertificateDirectory.
8972:
8973: =item (Red) CRITICAL SSL Socket promotion failed: <err>
8974:
8975: The promotion of the connection from plaintext to SSL failed
8976: <err> is the reason for the failure. There are two
8977: system calls involved in the promotion (one of which failed),
8978: a dup to produce
8979: a second fd on the raw socket over which the encrypted data
8980: will flow and IO::SOcket::SSL->new_from_fd which creates
8981: the SSL connection on the duped fd.
8982:
8983: =item (Blue) WARNING client did not respond to challenge
8984:
8985: This occurs on an insecure (non SSL) connection negotiation request.
8986: lond generates some number from the time, the PID and sends it to
8987: the client. The client must respond by echoing this information back.
8988: If the client does not do so, that's a violation of the challenge
8989: protocols and the connection will be failed.
8990:
8991: =item (Red) No manager table. Nobody can manage!!
8992:
8993: lond has the concept of privileged hosts that
8994: can perform remote management function such
8995: as update the hosts.tab. The manager hosts
8996: are described in the
8997: ~httpd/lonTabs/managers.tab file.
8998: this message is logged if this file is missing.
8999:
9000:
9001: =item (Green) Registering manager <dnsname> as <cluster_name> with <ipaddress>
9002:
9003: Reports the successful parse and registration
9004: of a specific manager.
9005:
9006: =item Green existing host <clustername:dnsname>
9007:
9008: The manager host is already defined in the hosts.tab
9009: the information in that table, rather than the info in the
9010: manager table will be used to determine the manager's ip.
9011:
9012: =item (Red) Unable to craete <filename>
9013:
9014: lond has been asked to create new versions of an administrative
9015: file (by a manager). When this is done, the new file is created
9016: in a temp file and then renamed into place so that there are always
9017: usable administrative files, even if the update fails. This failure
9018: message means that the temp file could not be created.
9019: The update is abandoned, and the old file is available for use.
9020:
9021: =item (Green) CopyFile from <oldname> to <newname> failed
9022:
9023: In an update of administrative files, the copy of the existing file to a
9024: backup file failed. The installation of the new file may still succeed,
9025: but there will not be a back up file to rever to (this should probably
9026: be yellow).
9027:
9028: =item (Green) Pushfile: backed up <oldname> to <newname>
9029:
9030: See above, the backup of the old administrative file succeeded.
9031:
9032: =item (Red) Pushfile: Unable to install <filename> <reason>
9033:
9034: The new administrative file could not be installed. In this case,
9035: the old administrative file is still in use.
9036:
9037: =item (Green) Installed new < filename>.
9038:
9039: The new administrative file was successfullly installed.
9040:
9041: =item (Red) Reinitializing lond pid=<pid>
9042:
9043: The lonc child process <pid> will be sent a USR2
9044: signal.
9045:
9046: =item (Red) Reinitializing self
9047:
9048: We've been asked to re-read our administrative files,and
9049: are doing so.
9050:
9051: =item (Yellow) error:Invalid process identifier <ident>
9052:
9053: A reinit command was received, but the target part of the
9054: command was not valid. It must be either
9055: 'lond' or 'lonc' but was <ident>
9056:
9057: =item (Green) isValideditCommand checking: Command = <command> Key = <key> newline = <newline>
9058:
9059: Checking to see if lond has been handed a valid edit
9060: command. It is possible the edit command is not valid
9061: in that case there are no log messages to indicate that.
9062:
9063: =item Result of password change for <username> pwchange_success
9064:
9065: The password for <username> was
9066: successfully changed.
9067:
9068: =item Unable to open <user> passwd to change password
9069:
9070: Could not rewrite the
9071: internal password file for a user
9072:
9073: =item Result of password change for <user> : <result>
9074:
9075: A unix password change for <user> was attempted
9076: and the pipe returned <result>
9077:
9078: =item LWP GET: <message> for <fname> (<remoteurl>)
9079:
9080: The lightweight process fetch for a resource failed
9081: with <message> the local filename that should
9082: have existed/been created was <fname> the
9083: corresponding URI: <remoteurl> This is emitted in several
9084: places.
9085:
9086: =item Unable to move <transname> to <destname>
9087:
9088: From fetch_user_file_handler - the user file was replicated but could not
9089: be mv'd to its final location.
9090:
9091: =item Looking for <domain> <username>
9092:
9093: From user_has_session_handler - This should be a Debug call instead
9094: it indicates lond is about to check whether the specified user has a
9095: session active on the specified domain on the local host.
9096:
9097: =item Client <ip> (<name>) hanging up: <input>
9098:
9099: lond has been asked to exit by its client. The <ip> and <name> identify the
9100: client systemand <input> is the full exit command sent to the server.
9101:
9102: =item Red CRITICAL: ABNORMAL EXIT. child <pid> for server <hostname> died through a crass with this error->[<message>].
9103:
9104: A lond child terminated. NOte that this termination can also occur when the
9105: child receives the QUIT or DIE signals. <pid> is the process id of the child,
9106: <hostname> the host lond is working for, and <message> the reason the child died
9107: to the best of our ability to get it (I would guess that any numeric value
9108: represents and errno value). This is immediately followed by
9109:
9110: =item Famous last words: Catching exception - <log>
9111:
9112: Where log is some recent information about the state of the child.
9113:
9114: =item Red CRITICAL: TIME OUT <pid>
9115:
9116: Some timeout occured for server <pid>. THis is normally a timeout on an LWP
9117: doing an HTTP::GET.
9118:
9119: =item child <pid> died
9120:
9121: The reaper caught a SIGCHILD for the lond child process <pid>
9122: This should be modified to also display the IP of the dying child
9123: $children{$pid}
9124:
9125: =item Unknown child 0 died
9126: A child died but the wait for it returned a pid of zero which really should not
9127: ever happen.
9128:
9129: =item Child <which> - <pid> looks like we missed it's death
9130:
9131: When a sigchild is received, the reaper process checks all children to see if they are
9132: alive. If children are dying quite quickly, the lack of signal queuing can mean
9133: that a signal hearalds the death of more than one child. If so this message indicates
9134: which other one died. <which> is the ip of a dead child
9135:
9136: =item Free socket: <shutdownretval>
9137:
9138: The HUNTSMAN sub was called due to a SIGINT in a child process. The socket is being shutdown.
9139: for whatever reason, <shutdownretval> is printed but in fact shutdown() is not documented
9140: to return anything. This is followed by:
9141:
9142: =item Red CRITICAL: Shutting down
9143:
9144: Just prior to exit.
9145:
9146: =item Free socket: <shutdownretval>
9147:
9148: The HUPSMAN sub was called due to a SIGHUP. all children get killsed, and lond execs itself.
9149: This is followed by:
9150:
9151: =item (Red) CRITICAL: Restarting
9152:
9153: lond is about to exec itself to restart.
9154:
9155: =item (Blue) Updating connections
9156:
9157: (In response to a USR2). All the children (except the one for localhost)
9158: are about to be killed, the hosts tab reread, and Apache reloaded via apachereload.
9159:
9160: =item (Blue) UpdateHosts killing child <pid> for ip <ip>
9161:
9162: Due to USR2 as above.
9163:
9164: =item (Green) keeping child for ip <ip> (pid = <pid>)
9165:
9166: In response to USR2 as above, the child indicated is not being restarted because
9167: it's assumed that we'll always need a child for the localhost.
9168:
9169:
9170: =item Going to check on the children
9171:
9172: Parent is about to check on the health of the child processes.
9173: Note that this is in response to a USR1 sent to the parent lond.
9174: there may be one or more of the next two messages:
9175:
9176: =item <pid> is dead
9177:
9178: A child that we have in our child hash as alive has evidently died.
9179:
9180: =item Child <pid> did not respond
9181:
9182: In the health check the child <pid> did not update/produce a pid_.txt
9183: file when sent it's USR1 signal. That process is killed with a 9 signal, as it's
9184: assumed to be hung in some un-fixable way.
9185:
9186: =item Finished checking children
9187:
9188: Master processs's USR1 processing is cojmplete.
9189:
9190: =item (Red) CRITICAL: ------- Starting ------
9191:
9192: (There are more '-'s on either side). Lond has forked itself off to
9193: form a new session and is about to start actual initialization.
9194:
9195: =item (Green) Attempting to start child (<client>)
9196:
9197: Started a new child process for <client>. Client is IO::Socket object
9198: connected to the child. This was as a result of a TCP/IP connection from a client.
9199:
9200: =item Unable to determine who caller was, getpeername returned nothing
9201:
9202: In child process initialization. either getpeername returned undef or
9203: a zero sized object was returned. Processing continues, but in my opinion,
9204: this should be cause for the child to exit.
9205:
9206: =item Unable to determine clientip
9207:
9208: In child process initialization. The peer address from getpeername was not defined.
9209: The client address is stored as "Unavailable" and processing continues.
9210:
9211: =item (Yellow) INFO: Connection <ip> <name> connection type = <type>
9212:
9213: In child initialization. A good connectionw as received from <ip>.
9214:
9215: =over 2
9216:
9217: =item <name>
9218:
9219: is the name of the client from hosts.tab.
9220:
9221: =item <type>
9222:
9223: Is the connection type which is either
9224:
9225: =over 2
9226:
9227: =item manager
9228:
9229: The connection is from a manager node, not in hosts.tab
9230:
9231: =item client
9232:
9233: the connection is from a non-manager in the hosts.tab
9234:
9235: =item both
9236:
9237: The connection is from a manager in the hosts.tab.
9238:
9239: =back
9240:
9241: =back
9242:
9243: =item (Blue) Certificates not installed -- trying insecure auth
9244:
9245: One of the certificate file, key file or
9246: certificate authority file could not be found for a client attempting
9247: SSL connection intiation. COnnection will be attemptied in in-secure mode.
9248: (this would be a system with an up to date lond that has not gotten a
9249: certificate from us).
9250:
9251: =item (Green) Successful local authentication
9252:
9253: A local connection successfully negotiated the encryption key.
9254: In this case the IDEA key is in a file (that is hopefully well protected).
9255:
9256: =item (Green) Successful ssl authentication with <client>
9257:
9258: The client (<client> is the peer's name in hosts.tab), has successfully
9259: negotiated an SSL connection with this child process.
9260:
9261: =item (Green) Successful insecure authentication with <client>
9262:
9263:
9264: The client has successfully negotiated an insecure connection withthe child process.
9265:
9266: =item (Yellow) Attempted insecure connection disallowed
9267:
9268: The client attempted and failed to successfully negotiate a successful insecure
9269: connection. This can happen either because the variable londAllowInsecure is false
9270: or undefined, or becuse the child did not successfully echo back the challenge
9271: string.
9272:
9273:
9274: =back
9275:
9276: =back
9277:
9278:
9279: =cut
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