Annotation of loncom/lond, revision 1.469
1.1 albertel 1: #!/usr/bin/perl
2: # The LearningOnline Network
3: # lond "LON Daemon" Server (port "LOND" 5663)
1.60 www 4: #
1.469 ! foxr 5: # $Id: lond,v 1.468 2011/01/11 10:32:00 foxr Exp $
1.60 www 6: #
7: # Copyright Michigan State University Board of Trustees
8: #
9: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
10: #
11: # LON-CAPA is free software; you can redistribute it and/or modify
12: # it under the terms of the GNU General Public License as published by
1.167 foxr 13: # the Free Software Foundation; either version 2 of the License, or
1.60 www 14: # (at your option) any later version.
15: #
16: # LON-CAPA is distributed in the hope that it will be useful,
17: # but WITHOUT ANY WARRANTY; without even the implied warranty of
1.469 ! foxr 18:
1.60 www 19: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20: # GNU General Public License for more details.
21: #
22: # You should have received a copy of the GNU General Public License
23: # along with LON-CAPA; if not, write to the Free Software
1.178 foxr 24: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
1.60 www 25: #
26: # /home/httpd/html/adm/gpl.txt
27: #
1.161 foxr 28:
29:
1.60 www 30: # http://www.lon-capa.org/
31: #
1.54 harris41 32:
1.134 albertel 33: use strict;
1.80 harris41 34: use lib '/home/httpd/lib/perl/';
1.325 albertel 35: use LONCAPA;
1.80 harris41 36: use LONCAPA::Configuration;
37:
1.1 albertel 38: use IO::Socket;
39: use IO::File;
1.126 albertel 40: #use Apache::File;
1.1 albertel 41: use POSIX;
42: use Crypt::IDEA;
43: use LWP::UserAgent();
1.347 raeburn 44: use Digest::MD5 qw(md5_hex);
1.3 www 45: use GDBM_File;
1.91 albertel 46: use Authen::Krb5;
1.49 albertel 47: use localauth;
1.193 raeburn 48: use localenroll;
1.265 albertel 49: use localstudentphoto;
1.143 foxr 50: use File::Copy;
1.292 albertel 51: use File::Find;
1.200 matthew 52: use LONCAPA::lonlocal;
53: use LONCAPA::lonssl;
1.221 albertel 54: use Fcntl qw(:flock);
1.383 raeburn 55: use Apache::lonnet;
1.1 albertel 56:
1.463 foxr 57: my $DEBUG = 0; # Non zero to enable debug log entries.
1.77 foxr 58:
1.57 www 59: my $status='';
60: my $lastlog='';
61:
1.469 ! foxr 62: my $VERSION='$Revision: 1.468 $'; #' stupid emacs
1.121 albertel 63: my $remoteVERSION;
1.214 foxr 64: my $currenthostid="default";
1.115 albertel 65: my $currentdomainid;
1.134 albertel 66:
67: my $client;
1.200 matthew 68: my $clientip; # IP address of client.
69: my $clientname; # LonCAPA name of client.
1.448 raeburn 70: my $clientversion; # LonCAPA version running on client.
71: my $clienthomedom; # LonCAPA domain of homeID for client.
72: # primary library server.
1.140 foxr 73:
1.134 albertel 74: my $server;
1.200 matthew 75:
76: my $keymode;
1.198 foxr 77:
1.207 foxr 78: my $cipher; # Cipher key negotiated with client
79: my $tmpsnum = 0; # Id of tmpputs.
80:
1.178 foxr 81: #
82: # Connection type is:
83: # client - All client actions are allowed
84: # manager - only management functions allowed.
85: # both - Both management and client actions are allowed
86: #
1.161 foxr 87:
1.178 foxr 88: my $ConnectionType;
1.161 foxr 89:
1.178 foxr 90: my %managers; # Ip -> manager names
1.161 foxr 91:
1.178 foxr 92: my %perlvar; # Will have the apache conf defined perl vars.
1.134 albertel 93:
1.178 foxr 94: #
1.207 foxr 95: # The hash below is used for command dispatching, and is therefore keyed on the request keyword.
96: # Each element of the hash contains a reference to an array that contains:
97: # A reference to a sub that executes the request corresponding to the keyword.
98: # A flag that is true if the request must be encoded to be acceptable.
99: # A mask with bits as follows:
100: # CLIENT_OK - Set when the function is allowed by ordinary clients
101: # MANAGER_OK - Set when the function is allowed to manager clients.
102: #
103: my $CLIENT_OK = 1;
104: my $MANAGER_OK = 2;
105: my %Dispatcher;
106:
107:
108: #
1.178 foxr 109: # The array below are password error strings."
110: #
111: my $lastpwderror = 13; # Largest error number from lcpasswd.
112: my @passwderrors = ("ok",
1.287 foxr 113: "pwchange_failure - lcpasswd must be run as user 'www'",
114: "pwchange_failure - lcpasswd got incorrect number of arguments",
115: "pwchange_failure - lcpasswd did not get the right nubmer of input text lines",
116: "pwchange_failure - lcpasswd too many simultaneous pwd changes in progress",
117: "pwchange_failure - lcpasswd User does not exist.",
118: "pwchange_failure - lcpasswd Incorrect current passwd",
119: "pwchange_failure - lcpasswd Unable to su to root.",
120: "pwchange_failure - lcpasswd Cannot set new passwd.",
121: "pwchange_failure - lcpasswd Username has invalid characters",
122: "pwchange_failure - lcpasswd Invalid characters in password",
123: "pwchange_failure - lcpasswd User already exists",
124: "pwchange_failure - lcpasswd Something went wrong with user addition.",
125: "pwchange_failure - lcpasswd Password mismatch",
126: "pwchange_failure - lcpasswd Error filename is invalid");
1.97 foxr 127:
128:
1.178 foxr 129: # The array below are lcuseradd error strings.:
1.97 foxr 130:
1.178 foxr 131: my $lastadderror = 13;
132: my @adderrors = ("ok",
133: "User ID mismatch, lcuseradd must run as user www",
134: "lcuseradd Incorrect number of command line parameters must be 3",
135: "lcuseradd Incorrect number of stdinput lines, must be 3",
136: "lcuseradd Too many other simultaneous pwd changes in progress",
137: "lcuseradd User does not exist",
138: "lcuseradd Unable to make www member of users's group",
139: "lcuseradd Unable to su to root",
140: "lcuseradd Unable to set password",
1.377 albertel 141: "lcuseradd Username has invalid characters",
1.178 foxr 142: "lcuseradd Password has an invalid character",
143: "lcuseradd User already exists",
144: "lcuseradd Could not add user.",
145: "lcuseradd Password mismatch");
1.97 foxr 146:
1.96 foxr 147:
1.412 foxr 148: # This array are the errors from lcinstallfile:
149:
150: my @installerrors = ("ok",
151: "Initial user id of client not that of www",
152: "Usage error, not enough command line arguments",
153: "Source file name does not exist",
154: "Destination file name does not exist",
155: "Some file operation failed",
156: "Invalid table filename."
157: );
1.207 foxr 158:
159: #
160: # Statistics that are maintained and dislayed in the status line.
161: #
1.212 foxr 162: my $Transactions = 0; # Number of attempted transactions.
163: my $Failures = 0; # Number of transcations failed.
1.207 foxr 164:
165: # ResetStatistics:
166: # Resets the statistics counters:
167: #
168: sub ResetStatistics {
169: $Transactions = 0;
170: $Failures = 0;
171: }
172:
1.200 matthew 173: #------------------------------------------------------------------------
174: #
175: # LocalConnection
176: # Completes the formation of a locally authenticated connection.
177: # This function will ensure that the 'remote' client is really the
178: # local host. If not, the connection is closed, and the function fails.
179: # If so, initcmd is parsed for the name of a file containing the
180: # IDEA session key. The fie is opened, read, deleted and the session
181: # key returned to the caller.
182: #
183: # Parameters:
184: # $Socket - Socket open on client.
185: # $initcmd - The full text of the init command.
186: #
187: # Returns:
188: # IDEA session key on success.
189: # undef on failure.
190: #
191: sub LocalConnection {
192: my ($Socket, $initcmd) = @_;
1.373 albertel 193: Debug("Attempting local connection: $initcmd client: $clientip");
1.277 albertel 194: if($clientip ne "127.0.0.1") {
1.200 matthew 195: &logthis('<font color="red"> LocalConnection rejecting non local: '
1.373 albertel 196: ."$clientip ne 127.0.0.1 </font>");
1.200 matthew 197: close $Socket;
198: return undef;
1.224 foxr 199: } else {
1.200 matthew 200: chomp($initcmd); # Get rid of \n in filename.
201: my ($init, $type, $name) = split(/:/, $initcmd);
202: Debug(" Init command: $init $type $name ");
203:
204: # Require that $init = init, and $type = local: Otherwise
205: # the caller is insane:
206:
207: if(($init ne "init") && ($type ne "local")) {
208: &logthis('<font color = "red"> LocalConnection: caller is insane! '
209: ."init = $init, and type = $type </font>");
210: close($Socket);;
211: return undef;
212:
213: }
214: # Now get the key filename:
215:
216: my $IDEAKey = lonlocal::ReadKeyFile($name);
217: return $IDEAKey;
218: }
219: }
220: #------------------------------------------------------------------------------
221: #
222: # SSLConnection
223: # Completes the formation of an ssh authenticated connection. The
224: # socket is promoted to an ssl socket. If this promotion and the associated
225: # certificate exchange are successful, the IDEA key is generated and sent
226: # to the remote peer via the SSL tunnel. The IDEA key is also returned to
227: # the caller after the SSL tunnel is torn down.
228: #
229: # Parameters:
230: # Name Type Purpose
231: # $Socket IO::Socket::INET Plaintext socket.
232: #
233: # Returns:
234: # IDEA key on success.
235: # undef on failure.
236: #
237: sub SSLConnection {
238: my $Socket = shift;
239:
240: Debug("SSLConnection: ");
241: my $KeyFile = lonssl::KeyFile();
242: if(!$KeyFile) {
243: my $err = lonssl::LastError();
244: &logthis("<font color=\"red\"> CRITICAL"
245: ."Can't get key file $err </font>");
246: return undef;
247: }
248: my ($CACertificate,
249: $Certificate) = lonssl::CertificateFile();
250:
251:
252: # If any of the key, certificate or certificate authority
253: # certificate filenames are not defined, this can't work.
254:
255: if((!$Certificate) || (!$CACertificate)) {
256: my $err = lonssl::LastError();
257: &logthis("<font color=\"red\"> CRITICAL"
258: ."Can't get certificates: $err </font>");
259:
260: return undef;
261: }
262: Debug("Key: $KeyFile CA: $CACertificate Cert: $Certificate");
263:
264: # Indicate to our peer that we can procede with
265: # a transition to ssl authentication:
266:
267: print $Socket "ok:ssl\n";
268:
269: Debug("Approving promotion -> ssl");
270: # And do so:
271:
272: my $SSLSocket = lonssl::PromoteServerSocket($Socket,
273: $CACertificate,
274: $Certificate,
275: $KeyFile);
276: if(! ($SSLSocket) ) { # SSL socket promotion failed.
277: my $err = lonssl::LastError();
278: &logthis("<font color=\"red\"> CRITICAL "
279: ."SSL Socket promotion failed: $err </font>");
280: return undef;
281: }
282: Debug("SSL Promotion successful");
283:
284: #
285: # The only thing we'll use the socket for is to send the IDEA key
286: # to the peer:
287:
288: my $Key = lonlocal::CreateCipherKey();
289: print $SSLSocket "$Key\n";
290:
291: lonssl::Close($SSLSocket);
292:
293: Debug("Key exchange complete: $Key");
294:
295: return $Key;
296: }
297: #
298: # InsecureConnection:
299: # If insecure connections are allowd,
300: # exchange a challenge with the client to 'validate' the
301: # client (not really, but that's the protocol):
302: # We produce a challenge string that's sent to the client.
303: # The client must then echo the challenge verbatim to us.
304: #
305: # Parameter:
306: # Socket - Socket open on the client.
307: # Returns:
308: # 1 - success.
309: # 0 - failure (e.g.mismatch or insecure not allowed).
310: #
311: sub InsecureConnection {
312: my $Socket = shift;
313:
314: # Don't even start if insecure connections are not allowed.
315:
316: if(! $perlvar{londAllowInsecure}) { # Insecure connections not allowed.
317: return 0;
318: }
319:
320: # Fabricate a challenge string and send it..
321:
322: my $challenge = "$$".time; # pid + time.
323: print $Socket "$challenge\n";
324: &status("Waiting for challenge reply");
325:
326: my $answer = <$Socket>;
327: $answer =~s/\W//g;
328: if($challenge eq $answer) {
329: return 1;
1.224 foxr 330: } else {
1.200 matthew 331: logthis("<font color='blue'>WARNING client did not respond to challenge</font>");
332: &status("No challenge reqply");
333: return 0;
334: }
335:
336:
337: }
1.251 foxr 338: #
339: # Safely execute a command (as long as it's not a shel command and doesn
340: # not require/rely on shell escapes. The function operates by doing a
341: # a pipe based fork and capturing stdout and stderr from the pipe.
342: #
343: # Formal Parameters:
344: # $line - A line of text to be executed as a command.
345: # Returns:
346: # The output from that command. If the output is multiline the caller
347: # must know how to split up the output.
348: #
349: #
350: sub execute_command {
351: my ($line) = @_;
352: my @words = split(/\s/, $line); # Bust the command up into words.
353: my $output = "";
354:
355: my $pid = open(CHILD, "-|");
356:
357: if($pid) { # Parent process
358: Debug("In parent process for execute_command");
359: my @data = <CHILD>; # Read the child's outupt...
360: close CHILD;
361: foreach my $output_line (@data) {
362: Debug("Adding $output_line");
363: $output .= $output_line; # Presumably has a \n on it.
364: }
365:
366: } else { # Child process
367: close (STDERR);
368: open (STDERR, ">&STDOUT");# Combine stderr, and stdout...
369: exec(@words); # won't return.
370: }
371: return $output;
372: }
373:
1.200 matthew 374:
1.140 foxr 375: # GetCertificate: Given a transaction that requires a certificate,
376: # this function will extract the certificate from the transaction
377: # request. Note that at this point, the only concept of a certificate
378: # is the hostname to which we are connected.
379: #
380: # Parameter:
381: # request - The request sent by our client (this parameterization may
382: # need to change when we really use a certificate granting
383: # authority.
384: #
385: sub GetCertificate {
386: my $request = shift;
387:
388: return $clientip;
389: }
1.161 foxr 390:
1.178 foxr 391: #
392: # Return true if client is a manager.
393: #
394: sub isManager {
395: return (($ConnectionType eq "manager") || ($ConnectionType eq "both"));
396: }
397: #
398: # Return tru if client can do client functions
399: #
400: sub isClient {
401: return (($ConnectionType eq "client") || ($ConnectionType eq "both"));
402: }
1.161 foxr 403:
404:
1.156 foxr 405: #
406: # ReadManagerTable: Reads in the current manager table. For now this is
407: # done on each manager authentication because:
408: # - These authentications are not frequent
409: # - This allows dynamic changes to the manager table
410: # without the need to signal to the lond.
411: #
412: sub ReadManagerTable {
413:
1.412 foxr 414: &Debug("Reading manager table");
1.156 foxr 415: # Clean out the old table first..
416:
1.166 foxr 417: foreach my $key (keys %managers) {
418: delete $managers{$key};
419: }
420:
421: my $tablename = $perlvar{'lonTabDir'}."/managers.tab";
422: if (!open (MANAGERS, $tablename)) {
423: logthis('<font color="red">No manager table. Nobody can manage!!</font>');
424: return;
425: }
426: while(my $host = <MANAGERS>) {
427: chomp($host);
428: if ($host =~ "^#") { # Comment line.
429: next;
430: }
1.368 albertel 431: if (!defined &Apache::lonnet::get_host_ip($host)) { # This is a non cluster member
1.161 foxr 432: # The entry is of the form:
433: # cluname:hostname
434: # cluname - A 'cluster hostname' is needed in order to negotiate
435: # the host key.
436: # hostname- The dns name of the host.
437: #
1.166 foxr 438: my($cluname, $dnsname) = split(/:/, $host);
439:
440: my $ip = gethostbyname($dnsname);
441: if(defined($ip)) { # bad names don't deserve entry.
442: my $hostip = inet_ntoa($ip);
443: $managers{$hostip} = $cluname;
444: logthis('<font color="green"> registering manager '.
445: "$dnsname as $cluname with $hostip </font>\n");
446: }
447: } else {
448: logthis('<font color="green"> existing host'." $host</font>\n");
1.368 albertel 449: $managers{&Apache::lonnet::get_host_ip($host)} = $host; # Use info from cluster tab if clumemeber
1.166 foxr 450: }
451: }
1.156 foxr 452: }
1.140 foxr 453:
454: #
455: # ValidManager: Determines if a given certificate represents a valid manager.
456: # in this primitive implementation, the 'certificate' is
457: # just the connecting loncapa client name. This is checked
458: # against a valid client list in the configuration.
459: #
460: #
461: sub ValidManager {
462: my $certificate = shift;
463:
1.163 foxr 464: return isManager;
1.140 foxr 465: }
466: #
1.143 foxr 467: # CopyFile: Called as part of the process of installing a
468: # new configuration file. This function copies an existing
469: # file to a backup file.
470: # Parameters:
471: # oldfile - Name of the file to backup.
472: # newfile - Name of the backup file.
473: # Return:
474: # 0 - Failure (errno has failure reason).
475: # 1 - Success.
476: #
477: sub CopyFile {
1.192 foxr 478:
479: my ($oldfile, $newfile) = @_;
1.143 foxr 480:
1.281 matthew 481: if (! copy($oldfile,$newfile)) {
482: return 0;
1.143 foxr 483: }
1.281 matthew 484: chmod(0660, $newfile);
485: return 1;
1.143 foxr 486: }
1.157 foxr 487: #
488: # Host files are passed out with externally visible host IPs.
489: # If, for example, we are behind a fire-wall or NAT host, our
490: # internally visible IP may be different than the externally
491: # visible IP. Therefore, we always adjust the contents of the
492: # host file so that the entry for ME is the IP that we believe
493: # we have. At present, this is defined as the entry that
494: # DNS has for us. If by some chance we are not able to get a
495: # DNS translation for us, then we assume that the host.tab file
496: # is correct.
497: # BUGBUGBUG - in the future, we really should see if we can
498: # easily query the interface(s) instead.
499: # Parameter(s):
500: # contents - The contents of the host.tab to check.
501: # Returns:
502: # newcontents - The adjusted contents.
503: #
504: #
505: sub AdjustHostContents {
506: my $contents = shift;
507: my $adjusted;
508: my $me = $perlvar{'lonHostID'};
509:
1.354 albertel 510: foreach my $line (split(/\n/,$contents)) {
1.157 foxr 511: if(!(($line eq "") || ($line =~ /^ *\#/) || ($line =~ /^ *$/))) {
512: chomp($line);
513: my ($id,$domain,$role,$name,$ip,$maxcon,$idleto,$mincon)=split(/:/,$line);
514: if ($id eq $me) {
1.354 albertel 515: my $ip = gethostbyname($name);
516: my $ipnew = inet_ntoa($ip);
517: $ip = $ipnew;
1.157 foxr 518: # Reconstruct the host line and append to adjusted:
519:
1.354 albertel 520: my $newline = "$id:$domain:$role:$name:$ip";
521: if($maxcon ne "") { # Not all hosts have loncnew tuning params
522: $newline .= ":$maxcon:$idleto:$mincon";
523: }
524: $adjusted .= $newline."\n";
1.157 foxr 525:
1.354 albertel 526: } else { # Not me, pass unmodified.
527: $adjusted .= $line."\n";
528: }
1.157 foxr 529: } else { # Blank or comment never re-written.
530: $adjusted .= $line."\n"; # Pass blanks and comments as is.
531: }
1.354 albertel 532: }
533: return $adjusted;
1.157 foxr 534: }
1.143 foxr 535: #
536: # InstallFile: Called to install an administrative file:
1.412 foxr 537: # - The file is created int a temp directory called <name>.tmp
538: # - lcinstall file is called to install the file.
539: # since the web app has no direct write access to the table directory
1.143 foxr 540: #
541: # Parameters:
542: # Name of the file
543: # File Contents.
544: # Return:
545: # nonzero - success.
546: # 0 - failure and $! has an errno.
1.412 foxr 547: # Assumptions:
548: # File installtion is a relatively infrequent
1.143 foxr 549: #
550: sub InstallFile {
1.192 foxr 551:
552: my ($Filename, $Contents) = @_;
1.412 foxr 553: # my $TempFile = $Filename.".tmp";
554: my $exedir = $perlvar{'lonDaemons'};
555: my $tmpdir = $exedir.'/tmp/';
556: my $TempFile = $tmpdir."TempTableFile.tmp";
1.143 foxr 557:
558: # Open the file for write:
559:
560: my $fh = IO::File->new("> $TempFile"); # Write to temp.
561: if(!(defined $fh)) {
562: &logthis('<font color="red"> Unable to create '.$TempFile."</font>");
563: return 0;
564: }
565: # write the contents of the file:
566:
567: print $fh ($Contents);
568: $fh->close; # In case we ever have a filesystem w. locking
569:
1.412 foxr 570: chmod(0664, $TempFile); # Everyone can write it.
571:
572: # Use lcinstall file to put the file in the table directory...
573:
574: &Debug("Opening pipe to $exedir/lcinstallfile $TempFile $Filename");
575: my $pf = IO::File->new("| $exedir/lcinstallfile $TempFile $Filename > $exedir/logs/lcinstallfile.log");
576: close $pf;
577: my $err = $?;
578: &Debug("Status is $err");
579: if ($err != 0) {
580: my $msg = $err;
581: if ($err < @installerrors) {
582: $msg = $installerrors[$err];
583: }
584: &logthis("Install failed for table file $Filename : $msg");
585: return 0;
586: }
587:
588: # Remove the temp file:
1.143 foxr 589:
1.412 foxr 590: unlink($TempFile);
1.143 foxr 591:
592: return 1;
593: }
1.200 matthew 594:
595:
1.169 foxr 596: #
597: # ConfigFileFromSelector: converts a configuration file selector
1.411 foxr 598: # into a configuration file pathname.
599: # It's probably no longer necessary to preserve
600: # special handling of hosts or domain as those
601: # files have been superceded by dns_hosts, dns_domain.
602: # The default action is just to prepend the directory
603: # and append .tab
604: #
1.169 foxr 605: #
606: # Parameters:
607: # selector - Configuration file selector.
608: # Returns:
609: # Full path to the file or undef if the selector is invalid.
610: #
611: sub ConfigFileFromSelector {
612: my $selector = shift;
613: my $tablefile;
614:
615: my $tabledir = $perlvar{'lonTabDir'}.'/';
616: if ($selector eq "hosts") {
617: $tablefile = $tabledir."hosts.tab";
618: } elsif ($selector eq "domain") {
619: $tablefile = $tabledir."domain.tab";
620: } else {
1.411 foxr 621: $tablefile = $tabledir.$selector.'.tab';
1.169 foxr 622: }
623: return $tablefile;
1.143 foxr 624:
1.169 foxr 625: }
1.143 foxr 626: #
1.141 foxr 627: # PushFile: Called to do an administrative push of a file.
628: # - Ensure the file being pushed is one we support.
629: # - Backup the old file to <filename.saved>
630: # - Separate the contents of the new file out from the
631: # rest of the request.
632: # - Write the new file.
633: # Parameter:
634: # Request - The entire user request. This consists of a : separated
635: # string pushfile:tablename:contents.
636: # NOTE: The contents may have :'s in it as well making things a bit
637: # more interesting... but not much.
638: # Returns:
639: # String to send to client ("ok" or "refused" if bad file).
640: #
641: sub PushFile {
642: my $request = shift;
643: my ($command, $filename, $contents) = split(":", $request, 3);
1.412 foxr 644: &Debug("PushFile");
1.141 foxr 645:
646: # At this point in time, pushes for only the following tables are
647: # supported:
648: # hosts.tab ($filename eq host).
649: # domain.tab ($filename eq domain).
650: # Construct the destination filename or reject the request.
651: #
652: # lonManage is supposed to ensure this, however this session could be
653: # part of some elaborate spoof that managed somehow to authenticate.
654: #
655:
1.169 foxr 656:
657: my $tablefile = ConfigFileFromSelector($filename);
658: if(! (defined $tablefile)) {
1.141 foxr 659: return "refused";
660: }
1.412 foxr 661:
1.157 foxr 662: # If the file being pushed is the host file, we adjust the entry for ourself so that the
663: # IP will be our current IP as looked up in dns. Note this is only 99% good as it's possible
664: # to conceive of conditions where we don't have a DNS entry locally. This is possible in a
665: # network sense but it doesn't make much sense in a LonCAPA sense so we ignore (for now)
666: # that possibilty.
667:
668: if($filename eq "host") {
669: $contents = AdjustHostContents($contents);
670: }
671:
1.141 foxr 672: # Install the new file:
673:
1.412 foxr 674: &logthis("Installing new $tablefile contents:\n$contents");
1.143 foxr 675: if(!InstallFile($tablefile, $contents)) {
676: &logthis('<font color="red"> Pushfile: unable to install '
1.145 foxr 677: .$tablefile." $! </font>");
1.143 foxr 678: return "error:$!";
1.224 foxr 679: } else {
1.143 foxr 680: &logthis('<font color="green"> Installed new '.$tablefile
681: ."</font>");
682:
683: }
684:
1.141 foxr 685:
686: # Indicate success:
687:
688: return "ok";
689:
690: }
1.145 foxr 691:
692: #
693: # Called to re-init either lonc or lond.
694: #
695: # Parameters:
696: # request - The full request by the client. This is of the form
697: # reinit:<process>
698: # where <process> is allowed to be either of
699: # lonc or lond
700: #
701: # Returns:
702: # The string to be sent back to the client either:
703: # ok - Everything worked just fine.
704: # error:why - There was a failure and why describes the reason.
705: #
706: #
707: sub ReinitProcess {
708: my $request = shift;
709:
1.146 foxr 710:
711: # separate the request (reinit) from the process identifier and
712: # validate it producing the name of the .pid file for the process.
713: #
714: #
715: my ($junk, $process) = split(":", $request);
1.147 foxr 716: my $processpidfile = $perlvar{'lonDaemons'}.'/logs/';
1.146 foxr 717: if($process eq 'lonc') {
718: $processpidfile = $processpidfile."lonc.pid";
1.147 foxr 719: if (!open(PIDFILE, "< $processpidfile")) {
720: return "error:Open failed for $processpidfile";
721: }
722: my $loncpid = <PIDFILE>;
723: close(PIDFILE);
724: logthis('<font color="red"> Reinitializing lonc pid='.$loncpid
725: ."</font>");
726: kill("USR2", $loncpid);
1.146 foxr 727: } elsif ($process eq 'lond') {
1.147 foxr 728: logthis('<font color="red"> Reinitializing self (lond) </font>');
729: &UpdateHosts; # Lond is us!!
1.146 foxr 730: } else {
731: &logthis('<font color="yellow" Invalid reinit request for '.$process
732: ."</font>");
733: return "error:Invalid process identifier $process";
734: }
1.145 foxr 735: return 'ok';
736: }
1.168 foxr 737: # Validate a line in a configuration file edit script:
738: # Validation includes:
739: # - Ensuring the command is valid.
740: # - Ensuring the command has sufficient parameters
741: # Parameters:
742: # scriptline - A line to validate (\n has been stripped for what it's worth).
1.167 foxr 743: #
1.168 foxr 744: # Return:
745: # 0 - Invalid scriptline.
746: # 1 - Valid scriptline
747: # NOTE:
748: # Only the command syntax is checked, not the executability of the
749: # command.
750: #
751: sub isValidEditCommand {
752: my $scriptline = shift;
753:
754: # Line elements are pipe separated:
755:
756: my ($command, $key, $newline) = split(/\|/, $scriptline);
757: &logthis('<font color="green"> isValideditCommand checking: '.
758: "Command = '$command', Key = '$key', Newline = '$newline' </font>\n");
759:
760: if ($command eq "delete") {
761: #
762: # key with no newline.
763: #
764: if( ($key eq "") || ($newline ne "")) {
765: return 0; # Must have key but no newline.
766: } else {
767: return 1; # Valid syntax.
768: }
1.169 foxr 769: } elsif ($command eq "replace") {
1.168 foxr 770: #
771: # key and newline:
772: #
773: if (($key eq "") || ($newline eq "")) {
774: return 0;
775: } else {
776: return 1;
777: }
1.169 foxr 778: } elsif ($command eq "append") {
779: if (($key ne "") && ($newline eq "")) {
780: return 1;
781: } else {
782: return 0;
783: }
1.168 foxr 784: } else {
785: return 0; # Invalid command.
786: }
787: return 0; # Should not get here!!!
788: }
1.169 foxr 789: #
790: # ApplyEdit - Applies an edit command to a line in a configuration
791: # file. It is the caller's responsiblity to validate the
792: # edit line.
793: # Parameters:
794: # $directive - A single edit directive to apply.
795: # Edit directives are of the form:
796: # append|newline - Appends a new line to the file.
797: # replace|key|newline - Replaces the line with key value 'key'
798: # delete|key - Deletes the line with key value 'key'.
799: # $editor - A config file editor object that contains the
800: # file being edited.
801: #
802: sub ApplyEdit {
1.192 foxr 803:
804: my ($directive, $editor) = @_;
1.169 foxr 805:
806: # Break the directive down into its command and its parameters
807: # (at most two at this point. The meaning of the parameters, if in fact
808: # they exist depends on the command).
809:
810: my ($command, $p1, $p2) = split(/\|/, $directive);
811:
812: if($command eq "append") {
813: $editor->Append($p1); # p1 - key p2 null.
814: } elsif ($command eq "replace") {
815: $editor->ReplaceLine($p1, $p2); # p1 - key p2 = newline.
816: } elsif ($command eq "delete") {
817: $editor->DeleteLine($p1); # p1 - key p2 null.
818: } else { # Should not get here!!!
819: die "Invalid command given to ApplyEdit $command"
820: }
821: }
822: #
823: # AdjustOurHost:
824: # Adjusts a host file stored in a configuration file editor object
825: # for the true IP address of this host. This is necessary for hosts
826: # that live behind a firewall.
827: # Those hosts have a publicly distributed IP of the firewall, but
828: # internally must use their actual IP. We assume that a given
829: # host only has a single IP interface for now.
830: # Formal Parameters:
831: # editor - The configuration file editor to adjust. This
832: # editor is assumed to contain a hosts.tab file.
833: # Strategy:
834: # - Figure out our hostname.
835: # - Lookup the entry for this host.
836: # - Modify the line to contain our IP
837: # - Do a replace for this host.
838: sub AdjustOurHost {
839: my $editor = shift;
840:
841: # figure out who I am.
842:
843: my $myHostName = $perlvar{'lonHostID'}; # LonCAPA hostname.
844:
845: # Get my host file entry.
846:
847: my $ConfigLine = $editor->Find($myHostName);
848: if(! (defined $ConfigLine)) {
849: die "AdjustOurHost - no entry for me in hosts file $myHostName";
850: }
851: # figure out my IP:
852: # Use the config line to get my hostname.
853: # Use gethostbyname to translate that into an IP address.
854: #
1.338 albertel 855: my ($id,$domain,$role,$name,$maxcon,$idleto,$mincon) = split(/:/,$ConfigLine);
1.169 foxr 856: #
857: # Reassemble the config line from the elements in the list.
858: # Note that if the loncnew items were not present before, they will
859: # be now even if they would be empty
860: #
861: my $newConfigLine = $id;
1.338 albertel 862: foreach my $item ($domain, $role, $name, $maxcon, $idleto, $mincon) {
1.169 foxr 863: $newConfigLine .= ":".$item;
864: }
865: # Replace the line:
866:
867: $editor->ReplaceLine($id, $newConfigLine);
868:
869: }
870: #
871: # ReplaceConfigFile:
872: # Replaces a configuration file with the contents of a
873: # configuration file editor object.
874: # This is done by:
875: # - Copying the target file to <filename>.old
876: # - Writing the new file to <filename>.tmp
877: # - Moving <filename.tmp> -> <filename>
878: # This laborious process ensures that the system is never without
879: # a configuration file that's at least valid (even if the contents
880: # may be dated).
881: # Parameters:
882: # filename - Name of the file to modify... this is a full path.
883: # editor - Editor containing the file.
884: #
885: sub ReplaceConfigFile {
1.192 foxr 886:
887: my ($filename, $editor) = @_;
1.168 foxr 888:
1.169 foxr 889: CopyFile ($filename, $filename.".old");
890:
891: my $contents = $editor->Get(); # Get the contents of the file.
892:
893: InstallFile($filename, $contents);
894: }
1.168 foxr 895: #
896: #
897: # Called to edit a configuration table file
1.167 foxr 898: # Parameters:
899: # request - The entire command/request sent by lonc or lonManage
900: # Return:
901: # The reply to send to the client.
1.168 foxr 902: #
1.167 foxr 903: sub EditFile {
904: my $request = shift;
905:
906: # Split the command into it's pieces: edit:filetype:script
907:
1.339 albertel 908: my ($cmd, $filetype, $script) = split(/:/, $request,3); # : in script
1.167 foxr 909:
910: # Check the pre-coditions for success:
911:
1.339 albertel 912: if($cmd != "edit") { # Something is amiss afoot alack.
1.167 foxr 913: return "error:edit request detected, but request != 'edit'\n";
914: }
915: if( ($filetype ne "hosts") &&
916: ($filetype ne "domain")) {
917: return "error:edit requested with invalid file specifier: $filetype \n";
918: }
919:
920: # Split the edit script and check it's validity.
1.168 foxr 921:
922: my @scriptlines = split(/\n/, $script); # one line per element.
923: my $linecount = scalar(@scriptlines);
924: for(my $i = 0; $i < $linecount; $i++) {
925: chomp($scriptlines[$i]);
926: if(!isValidEditCommand($scriptlines[$i])) {
927: return "error:edit with bad script line: '$scriptlines[$i]' \n";
928: }
929: }
1.145 foxr 930:
1.167 foxr 931: # Execute the edit operation.
1.169 foxr 932: # - Create a config file editor for the appropriate file and
933: # - execute each command in the script:
934: #
935: my $configfile = ConfigFileFromSelector($filetype);
936: if (!(defined $configfile)) {
937: return "refused\n";
938: }
939: my $editor = ConfigFileEdit->new($configfile);
1.167 foxr 940:
1.169 foxr 941: for (my $i = 0; $i < $linecount; $i++) {
942: ApplyEdit($scriptlines[$i], $editor);
943: }
944: # If the file is the host file, ensure that our host is
945: # adjusted to have our ip:
946: #
947: if($filetype eq "host") {
948: AdjustOurHost($editor);
949: }
950: # Finally replace the current file with our file.
951: #
952: ReplaceConfigFile($configfile, $editor);
1.167 foxr 953:
954: return "ok\n";
955: }
1.207 foxr 956:
1.255 foxr 957: # read_profile
958: #
959: # Returns a set of specific entries from a user's profile file.
960: # this is a utility function that is used by both get_profile_entry and
961: # get_profile_entry_encrypted.
962: #
963: # Parameters:
964: # udom - Domain in which the user exists.
965: # uname - User's account name (loncapa account)
966: # namespace - The profile namespace to open.
967: # what - A set of & separated queries.
968: # Returns:
969: # If all ok: - The string that needs to be shipped back to the user.
970: # If failure - A string that starts with error: followed by the failure
971: # reason.. note that this probabyl gets shipped back to the
972: # user as well.
973: #
974: sub read_profile {
975: my ($udom, $uname, $namespace, $what) = @_;
976:
977: my $hashref = &tie_user_hash($udom, $uname, $namespace,
978: &GDBM_READER());
979: if ($hashref) {
980: my @queries=split(/\&/,$what);
1.440 raeburn 981: if ($namespace eq 'roles') {
982: @queries = map { &unescape($_); } @queries;
983: }
1.255 foxr 984: my $qresult='';
985:
986: for (my $i=0;$i<=$#queries;$i++) {
987: $qresult.="$hashref->{$queries[$i]}&"; # Presumably failure gives empty string.
988: }
989: $qresult=~s/\&$//; # Remove trailing & from last lookup.
1.311 albertel 990: if (&untie_user_hash($hashref)) {
1.255 foxr 991: return $qresult;
992: } else {
993: return "error: ".($!+0)." untie (GDBM) Failed";
994: }
995: } else {
996: if ($!+0 == 2) {
997: return "error:No such file or GDBM reported bad block error";
998: } else {
999: return "error: ".($!+0)." tie (GDBM) Failed";
1000: }
1001: }
1002:
1003: }
1.214 foxr 1004: #--------------------- Request Handlers --------------------------------------------
1005: #
1.215 foxr 1006: # By convention each request handler registers itself prior to the sub
1007: # declaration:
1.214 foxr 1008: #
1009:
1.216 foxr 1010: #++
1011: #
1.214 foxr 1012: # Handles ping requests.
1013: # Parameters:
1014: # $cmd - the actual keyword that invoked us.
1015: # $tail - the tail of the request that invoked us.
1016: # $replyfd- File descriptor connected to the client
1017: # Implicit Inputs:
1018: # $currenthostid - Global variable that carries the name of the host we are
1019: # known as.
1020: # Returns:
1021: # 1 - Ok to continue processing.
1022: # 0 - Program should exit.
1023: # Side effects:
1024: # Reply information is sent to the client.
1025: sub ping_handler {
1026: my ($cmd, $tail, $client) = @_;
1027: Debug("$cmd $tail $client .. $currenthostid:");
1028:
1.387 albertel 1029: Reply( $client,\$currenthostid,"$cmd:$tail");
1.214 foxr 1030:
1031: return 1;
1032: }
1033: ®ister_handler("ping", \&ping_handler, 0, 1, 1); # Ping unencoded, client or manager.
1034:
1.216 foxr 1035: #++
1.215 foxr 1036: #
1037: # Handles pong requests. Pong replies with our current host id, and
1038: # the results of a ping sent to us via our lonc.
1039: #
1040: # Parameters:
1041: # $cmd - the actual keyword that invoked us.
1042: # $tail - the tail of the request that invoked us.
1043: # $replyfd- File descriptor connected to the client
1044: # Implicit Inputs:
1045: # $currenthostid - Global variable that carries the name of the host we are
1046: # connected to.
1047: # Returns:
1048: # 1 - Ok to continue processing.
1049: # 0 - Program should exit.
1050: # Side effects:
1051: # Reply information is sent to the client.
1052: sub pong_handler {
1053: my ($cmd, $tail, $replyfd) = @_;
1054:
1.365 albertel 1055: my $reply=&Apache::lonnet::reply("ping",$clientname);
1.215 foxr 1056: &Reply( $replyfd, "$currenthostid:$reply\n", "$cmd:$tail");
1057: return 1;
1058: }
1059: ®ister_handler("pong", \&pong_handler, 0, 1, 1); # Pong unencoded, client or manager
1060:
1.216 foxr 1061: #++
1062: # Called to establish an encrypted session key with the remote client.
1063: # Note that with secure lond, in most cases this function is never
1064: # invoked. Instead, the secure session key is established either
1065: # via a local file that's locked down tight and only lives for a short
1066: # time, or via an ssl tunnel...and is generated from a bunch-o-random
1067: # bits from /dev/urandom, rather than the predictable pattern used by
1068: # by this sub. This sub is only used in the old-style insecure
1069: # key negotiation.
1070: # Parameters:
1071: # $cmd - the actual keyword that invoked us.
1072: # $tail - the tail of the request that invoked us.
1073: # $replyfd- File descriptor connected to the client
1074: # Implicit Inputs:
1075: # $currenthostid - Global variable that carries the name of the host
1076: # known as.
1.448 raeburn 1077: # $clientname - Global variable that carries the name of the host we're connected to.
1.216 foxr 1078: # Returns:
1079: # 1 - Ok to continue processing.
1080: # 0 - Program should exit.
1081: # Implicit Outputs:
1082: # Reply information is sent to the client.
1083: # $cipher is set with a reference to a new IDEA encryption object.
1084: #
1085: sub establish_key_handler {
1086: my ($cmd, $tail, $replyfd) = @_;
1087:
1088: my $buildkey=time.$$.int(rand 100000);
1089: $buildkey=~tr/1-6/A-F/;
1090: $buildkey=int(rand 100000).$buildkey.int(rand 100000);
1091: my $key=$currenthostid.$clientname;
1092: $key=~tr/a-z/A-Z/;
1093: $key=~tr/G-P/0-9/;
1094: $key=~tr/Q-Z/0-9/;
1095: $key=$key.$buildkey.$key.$buildkey.$key.$buildkey;
1096: $key=substr($key,0,32);
1097: my $cipherkey=pack("H32",$key);
1098: $cipher=new IDEA $cipherkey;
1.387 albertel 1099: &Reply($replyfd, \$buildkey, "$cmd:$tail");
1.216 foxr 1100:
1101: return 1;
1102:
1103: }
1104: ®ister_handler("ekey", \&establish_key_handler, 0, 1,1);
1105:
1.217 foxr 1106: # Handler for the load command. Returns the current system load average
1107: # to the requestor.
1108: #
1109: # Parameters:
1110: # $cmd - the actual keyword that invoked us.
1111: # $tail - the tail of the request that invoked us.
1112: # $replyfd- File descriptor connected to the client
1113: # Implicit Inputs:
1114: # $currenthostid - Global variable that carries the name of the host
1115: # known as.
1.448 raeburn 1116: # $clientname - Global variable that carries the name of the host we're connected to.
1.217 foxr 1117: # Returns:
1118: # 1 - Ok to continue processing.
1119: # 0 - Program should exit.
1120: # Side effects:
1121: # Reply information is sent to the client.
1122: sub load_handler {
1123: my ($cmd, $tail, $replyfd) = @_;
1124:
1.463 foxr 1125:
1126:
1.217 foxr 1127: # Get the load average from /proc/loadavg and calculate it as a percentage of
1128: # the allowed load limit as set by the perl global variable lonLoadLim
1129:
1130: my $loadavg;
1131: my $loadfile=IO::File->new('/proc/loadavg');
1132:
1133: $loadavg=<$loadfile>;
1134: $loadavg =~ s/\s.*//g; # Extract the first field only.
1135:
1136: my $loadpercent=100*$loadavg/$perlvar{'lonLoadLim'};
1137:
1.387 albertel 1138: &Reply( $replyfd, \$loadpercent, "$cmd:$tail");
1.217 foxr 1139:
1140: return 1;
1141: }
1.263 albertel 1142: ®ister_handler("load", \&load_handler, 0, 1, 0);
1.217 foxr 1143:
1144: #
1145: # Process the userload request. This sub returns to the client the current
1146: # user load average. It can be invoked either by clients or managers.
1147: #
1148: # Parameters:
1149: # $cmd - the actual keyword that invoked us.
1150: # $tail - the tail of the request that invoked us.
1151: # $replyfd- File descriptor connected to the client
1152: # Implicit Inputs:
1153: # $currenthostid - Global variable that carries the name of the host
1154: # known as.
1.448 raeburn 1155: # $clientname - Global variable that carries the name of the host we're connected to.
1.217 foxr 1156: # Returns:
1157: # 1 - Ok to continue processing.
1158: # 0 - Program should exit
1159: # Implicit inputs:
1160: # whatever the userload() function requires.
1161: # Implicit outputs:
1162: # the reply is written to the client.
1163: #
1164: sub user_load_handler {
1165: my ($cmd, $tail, $replyfd) = @_;
1166:
1.365 albertel 1167: my $userloadpercent=&Apache::lonnet::userload();
1.387 albertel 1168: &Reply($replyfd, \$userloadpercent, "$cmd:$tail");
1.217 foxr 1169:
1170: return 1;
1171: }
1.263 albertel 1172: ®ister_handler("userload", \&user_load_handler, 0, 1, 0);
1.217 foxr 1173:
1.218 foxr 1174: # Process a request for the authorization type of a user:
1175: # (userauth).
1176: #
1177: # Parameters:
1178: # $cmd - the actual keyword that invoked us.
1179: # $tail - the tail of the request that invoked us.
1180: # $replyfd- File descriptor connected to the client
1181: # Returns:
1182: # 1 - Ok to continue processing.
1183: # 0 - Program should exit
1184: # Implicit outputs:
1185: # The user authorization type is written to the client.
1186: #
1187: sub user_authorization_type {
1188: my ($cmd, $tail, $replyfd) = @_;
1189:
1190: my $userinput = "$cmd:$tail";
1191:
1192: # Pull the domain and username out of the command tail.
1.222 foxr 1193: # and call get_auth_type to determine the authentication type.
1.218 foxr 1194:
1195: my ($udom,$uname)=split(/:/,$tail);
1.222 foxr 1196: my $result = &get_auth_type($udom, $uname);
1.218 foxr 1197: if($result eq "nouser") {
1198: &Failure( $replyfd, "unknown_user\n", $userinput);
1199: } else {
1200: #
1.222 foxr 1201: # We only want to pass the second field from get_auth_type
1.218 foxr 1202: # for ^krb.. otherwise we'll be handing out the encrypted
1203: # password for internals e.g.
1204: #
1205: my ($type,$otherinfo) = split(/:/,$result);
1206: if($type =~ /^krb/) {
1207: $type = $result;
1.269 raeburn 1208: } else {
1209: $type .= ':';
1210: }
1.387 albertel 1211: &Reply( $replyfd, \$type, $userinput);
1.218 foxr 1212: }
1213:
1214: return 1;
1215: }
1216: ®ister_handler("currentauth", \&user_authorization_type, 1, 1, 0);
1217:
1218: # Process a request by a manager to push a hosts or domain table
1219: # to us. We pick apart the command and pass it on to the subs
1220: # that already exist to do this.
1221: #
1222: # Parameters:
1223: # $cmd - the actual keyword that invoked us.
1224: # $tail - the tail of the request that invoked us.
1225: # $client - File descriptor connected to the client
1226: # Returns:
1227: # 1 - Ok to continue processing.
1228: # 0 - Program should exit
1229: # Implicit Output:
1230: # a reply is written to the client.
1231: sub push_file_handler {
1232: my ($cmd, $tail, $client) = @_;
1.412 foxr 1233: &Debug("In push file handler");
1.218 foxr 1234: my $userinput = "$cmd:$tail";
1235:
1236: # At this time we only know that the IP of our partner is a valid manager
1237: # the code below is a hook to do further authentication (e.g. to resolve
1238: # spoofing).
1239:
1240: my $cert = &GetCertificate($userinput);
1.412 foxr 1241: if(&ValidManager($cert)) {
1242: &Debug("Valid manager: $client");
1.218 foxr 1243:
1244: # Now presumably we have the bona fides of both the peer host and the
1245: # process making the request.
1246:
1247: my $reply = &PushFile($userinput);
1.387 albertel 1248: &Reply($client, \$reply, $userinput);
1.218 foxr 1249:
1250: } else {
1.412 foxr 1251: &logthis("push_file_handler $client is not valid");
1.218 foxr 1252: &Failure( $client, "refused\n", $userinput);
1253: }
1.219 foxr 1254: return 1;
1.218 foxr 1255: }
1256: ®ister_handler("pushfile", \&push_file_handler, 1, 0, 1);
1257:
1.399 raeburn 1258: # The du_handler routine should be considered obsolete and is retained
1259: # for communication with legacy servers. Please see the du2_handler.
1.243 banghart 1260: #
1.399 raeburn 1261: # du - list the disk usage of a directory recursively.
1.243 banghart 1262: #
1263: # note: stolen code from the ls file handler
1264: # under construction by Rick Banghart
1265: # .
1266: # Parameters:
1267: # $cmd - The command that dispatched us (du).
1268: # $ududir - The directory path to list... I'm not sure what this
1269: # is relative as things like ls:. return e.g.
1270: # no_such_dir.
1271: # $client - Socket open on the client.
1272: # Returns:
1273: # 1 - indicating that the daemon should not disconnect.
1274: # Side Effects:
1275: # The reply is written to $client.
1276: #
1277: sub du_handler {
1278: my ($cmd, $ududir, $client) = @_;
1.339 albertel 1279: ($ududir) = split(/:/,$ududir); # Make 'telnet' testing easier.
1.251 foxr 1280: my $userinput = "$cmd:$ududir";
1281:
1.245 albertel 1282: if ($ududir=~/\.\./ || $ududir!~m|^/home/httpd/|) {
1283: &Failure($client,"refused\n","$cmd:$ududir");
1284: return 1;
1285: }
1.249 foxr 1286: # Since $ududir could have some nasties in it,
1287: # we will require that ududir is a valid
1288: # directory. Just in case someone tries to
1289: # slip us a line like .;(cd /home/httpd rm -rf*)
1290: # etc.
1291: #
1292: if (-d $ududir) {
1.292 albertel 1293: my $total_size=0;
1294: my $code=sub {
1295: if ($_=~/\.\d+\./) { return;}
1296: if ($_=~/\.meta$/) { return;}
1.362 albertel 1297: if (-d $_) { return;}
1.292 albertel 1298: $total_size+=(stat($_))[7];
1299: };
1.295 raeburn 1300: chdir($ududir);
1.292 albertel 1301: find($code,$ududir);
1302: $total_size=int($total_size/1024);
1.387 albertel 1303: &Reply($client,\$total_size,"$cmd:$ududir");
1.249 foxr 1304: } else {
1.251 foxr 1305: &Failure($client, "bad_directory:$ududir\n","$cmd:$ududir");
1.249 foxr 1306: }
1.243 banghart 1307: return 1;
1308: }
1309: ®ister_handler("du", \&du_handler, 0, 1, 0);
1.218 foxr 1310:
1.399 raeburn 1311: # Please also see the du_handler, which is obsoleted by du2.
1312: # du2_handler differs from du_handler in that required path to directory
1313: # provided by &propath() is prepended in the handler instead of on the
1314: # client side.
1.239 foxr 1315: #
1.399 raeburn 1316: # du2 - list the disk usage of a directory recursively.
1317: #
1318: # Parameters:
1319: # $cmd - The command that dispatched us (du).
1320: # $tail - The tail of the request that invoked us.
1321: # $tail is a : separated list of the following:
1322: # - $ududir - directory path to list (before prepending)
1323: # - $getpropath = 1 if &propath() should prepend
1324: # - $uname - username to use for &propath or user dir
1325: # - $udom - domain to use for &propath or user dir
1326: # All are escaped.
1327: # $client - Socket open on the client.
1328: # Returns:
1329: # 1 - indicating that the daemon should not disconnect.
1330: # Side Effects:
1331: # The reply is written to $client.
1332: #
1333:
1334: sub du2_handler {
1335: my ($cmd, $tail, $client) = @_;
1336: my ($ududir,$getpropath,$uname,$udom) = map { &unescape($_) } (split(/:/, $tail));
1337: my $userinput = "$cmd:$tail";
1338: if (($ududir=~/\.\./) || (($ududir!~m|^/home/httpd/|) && (!$getpropath))) {
1339: &Failure($client,"refused\n","$cmd:$tail");
1340: return 1;
1341: }
1342: if ($getpropath) {
1343: if (($uname =~ /^$LONCAPA::match_name$/) && ($udom =~ /^$LONCAPA::match_domain$/)) {
1344: $ududir = &propath($udom,$uname).'/'.$ududir;
1345: } else {
1346: &Failure($client,"refused\n","$cmd:$tail");
1347: return 1;
1348: }
1349: }
1350: # Since $ududir could have some nasties in it,
1351: # we will require that ududir is a valid
1352: # directory. Just in case someone tries to
1353: # slip us a line like .;(cd /home/httpd rm -rf*)
1354: # etc.
1355: #
1356: if (-d $ududir) {
1357: my $total_size=0;
1358: my $code=sub {
1359: if ($_=~/\.\d+\./) { return;}
1360: if ($_=~/\.meta$/) { return;}
1361: if (-d $_) { return;}
1362: $total_size+=(stat($_))[7];
1363: };
1364: chdir($ududir);
1365: find($code,$ududir);
1366: $total_size=int($total_size/1024);
1367: &Reply($client,\$total_size,"$cmd:$ududir");
1368: } else {
1369: &Failure($client, "bad_directory:$ududir\n","$cmd:$tail");
1370: }
1371: return 1;
1372: }
1373: ®ister_handler("du2", \&du2_handler, 0, 1, 0);
1374:
1375: #
1376: # The ls_handler routine should be considered obsolete and is retained
1377: # for communication with legacy servers. Please see the ls3_handler.
1.280 matthew 1378: #
1.239 foxr 1379: # ls - list the contents of a directory. For each file in the
1380: # selected directory the filename followed by the full output of
1381: # the stat function is returned. The returned info for each
1382: # file are separated by ':'. The stat fields are separated by &'s.
1383: # Parameters:
1384: # $cmd - The command that dispatched us (ls).
1385: # $ulsdir - The directory path to list... I'm not sure what this
1386: # is relative as things like ls:. return e.g.
1387: # no_such_dir.
1388: # $client - Socket open on the client.
1389: # Returns:
1390: # 1 - indicating that the daemon should not disconnect.
1391: # Side Effects:
1392: # The reply is written to $client.
1393: #
1394: sub ls_handler {
1.280 matthew 1395: # obsoleted by ls2_handler
1.239 foxr 1396: my ($cmd, $ulsdir, $client) = @_;
1397:
1398: my $userinput = "$cmd:$ulsdir";
1399:
1400: my $obs;
1401: my $rights;
1402: my $ulsout='';
1403: my $ulsfn;
1404: if (-e $ulsdir) {
1405: if(-d $ulsdir) {
1406: if (opendir(LSDIR,$ulsdir)) {
1407: while ($ulsfn=readdir(LSDIR)) {
1.291 albertel 1408: undef($obs);
1409: undef($rights);
1.239 foxr 1410: my @ulsstats=stat($ulsdir.'/'.$ulsfn);
1411: #We do some obsolete checking here
1412: if(-e $ulsdir.'/'.$ulsfn.".meta") {
1413: open(FILE, $ulsdir.'/'.$ulsfn.".meta");
1414: my @obsolete=<FILE>;
1415: foreach my $obsolete (@obsolete) {
1.301 www 1416: if($obsolete =~ m/(<obsolete>)(on|1)/) { $obs = 1; }
1.239 foxr 1417: if($obsolete =~ m|(<copyright>)(default)|) { $rights = 1; }
1418: }
1419: }
1420: $ulsout.=$ulsfn.'&'.join('&',@ulsstats);
1421: if($obs eq '1') { $ulsout.="&1"; }
1422: else { $ulsout.="&0"; }
1423: if($rights eq '1') { $ulsout.="&1:"; }
1424: else { $ulsout.="&0:"; }
1425: }
1426: closedir(LSDIR);
1427: }
1428: } else {
1429: my @ulsstats=stat($ulsdir);
1430: $ulsout.=$ulsfn.'&'.join('&',@ulsstats).':';
1431: }
1432: } else {
1433: $ulsout='no_such_dir';
1434: }
1435: if ($ulsout eq '') { $ulsout='empty'; }
1.387 albertel 1436: &Reply($client, \$ulsout, $userinput); # This supports debug logging.
1.239 foxr 1437:
1438: return 1;
1439:
1440: }
1441: ®ister_handler("ls", \&ls_handler, 0, 1, 0);
1442:
1.399 raeburn 1443: # The ls2_handler routine should be considered obsolete and is retained
1444: # for communication with legacy servers. Please see the ls3_handler.
1445: # Please also see the ls_handler, which was itself obsoleted by ls2.
1.280 matthew 1446: # ls2_handler differs from ls_handler in that it escapes its return
1447: # values before concatenating them together with ':'s.
1448: #
1449: # ls2 - list the contents of a directory. For each file in the
1450: # selected directory the filename followed by the full output of
1451: # the stat function is returned. The returned info for each
1452: # file are separated by ':'. The stat fields are separated by &'s.
1453: # Parameters:
1454: # $cmd - The command that dispatched us (ls).
1455: # $ulsdir - The directory path to list... I'm not sure what this
1456: # is relative as things like ls:. return e.g.
1457: # no_such_dir.
1458: # $client - Socket open on the client.
1459: # Returns:
1460: # 1 - indicating that the daemon should not disconnect.
1461: # Side Effects:
1462: # The reply is written to $client.
1463: #
1464: sub ls2_handler {
1465: my ($cmd, $ulsdir, $client) = @_;
1466:
1467: my $userinput = "$cmd:$ulsdir";
1468:
1469: my $obs;
1470: my $rights;
1471: my $ulsout='';
1472: my $ulsfn;
1473: if (-e $ulsdir) {
1474: if(-d $ulsdir) {
1475: if (opendir(LSDIR,$ulsdir)) {
1476: while ($ulsfn=readdir(LSDIR)) {
1.291 albertel 1477: undef($obs);
1478: undef($rights);
1.280 matthew 1479: my @ulsstats=stat($ulsdir.'/'.$ulsfn);
1480: #We do some obsolete checking here
1481: if(-e $ulsdir.'/'.$ulsfn.".meta") {
1482: open(FILE, $ulsdir.'/'.$ulsfn.".meta");
1483: my @obsolete=<FILE>;
1484: foreach my $obsolete (@obsolete) {
1.301 www 1485: if($obsolete =~ m/(<obsolete>)(on|1)/) { $obs = 1; }
1.280 matthew 1486: if($obsolete =~ m|(<copyright>)(default)|) {
1487: $rights = 1;
1488: }
1489: }
1490: }
1491: my $tmp = $ulsfn.'&'.join('&',@ulsstats);
1492: if ($obs eq '1') { $tmp.="&1"; } else { $tmp.="&0"; }
1493: if ($rights eq '1') { $tmp.="&1"; } else { $tmp.="&0"; }
1494: $ulsout.= &escape($tmp).':';
1495: }
1496: closedir(LSDIR);
1497: }
1498: } else {
1499: my @ulsstats=stat($ulsdir);
1500: $ulsout.=$ulsfn.'&'.join('&',@ulsstats).':';
1501: }
1502: } else {
1503: $ulsout='no_such_dir';
1504: }
1505: if ($ulsout eq '') { $ulsout='empty'; }
1.387 albertel 1506: &Reply($client, \$ulsout, $userinput); # This supports debug logging.
1.280 matthew 1507: return 1;
1508: }
1509: ®ister_handler("ls2", \&ls2_handler, 0, 1, 0);
1.399 raeburn 1510: #
1511: # ls3 - list the contents of a directory. For each file in the
1512: # selected directory the filename followed by the full output of
1513: # the stat function is returned. The returned info for each
1514: # file are separated by ':'. The stat fields are separated by &'s.
1515: # Parameters:
1516: # $cmd - The command that dispatched us (ls).
1517: # $tail - The tail of the request that invoked us.
1518: # $tail is a : separated list of the following:
1519: # - $ulsdir - directory path to list (before prepending)
1520: # - $getpropath = 1 if &propath() should prepend
1521: # - $getuserdir = 1 if path to user dir in lonUsers should
1522: # prepend
1523: # - $alternate_root - path to prepend
1524: # - $uname - username to use for &propath or user dir
1525: # - $udom - domain to use for &propath or user dir
1526: # All of these except $getpropath and &getuserdir are escaped.
1527: # no_such_dir.
1528: # $client - Socket open on the client.
1529: # Returns:
1530: # 1 - indicating that the daemon should not disconnect.
1531: # Side Effects:
1532: # The reply is written to $client.
1533: #
1534:
1535: sub ls3_handler {
1536: my ($cmd, $tail, $client) = @_;
1537: my $userinput = "$cmd:$tail";
1538: my ($ulsdir,$getpropath,$getuserdir,$alternate_root,$uname,$udom) =
1539: split(/:/,$tail);
1540: if (defined($ulsdir)) {
1541: $ulsdir = &unescape($ulsdir);
1542: }
1543: if (defined($alternate_root)) {
1544: $alternate_root = &unescape($alternate_root);
1545: }
1546: if (defined($uname)) {
1547: $uname = &unescape($uname);
1548: }
1549: if (defined($udom)) {
1550: $udom = &unescape($udom);
1551: }
1552:
1553: my $dir_root = $perlvar{'lonDocRoot'};
1554: if ($getpropath) {
1555: if (($uname =~ /^$LONCAPA::match_name$/) && ($udom =~ /^$LONCAPA::match_domain$/)) {
1556: $dir_root = &propath($udom,$uname);
1557: $dir_root =~ s/\/$//;
1558: } else {
1559: &Failure($client,"refused\n","$cmd:$tail");
1560: return 1;
1561: }
1562: } elsif ($getuserdir) {
1563: if (($uname =~ /^$LONCAPA::match_name$/) && ($udom =~ /^$LONCAPA::match_domain$/)) {
1564: my $subdir=$uname.'__';
1565: $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;
1566: $dir_root = $Apache::lonnet::perlvar{'lonUsersDir'}
1567: ."/$udom/$subdir/$uname";
1568: } else {
1569: &Failure($client,"refused\n","$cmd:$tail");
1570: return 1;
1571: }
1.400 raeburn 1572: } elsif ($alternate_root ne '') {
1.399 raeburn 1573: $dir_root = $alternate_root;
1574: }
1.408 raeburn 1575: if (($dir_root ne '') && ($dir_root ne '/')) {
1.400 raeburn 1576: if ($ulsdir =~ /^\//) {
1577: $ulsdir = $dir_root.$ulsdir;
1578: } else {
1579: $ulsdir = $dir_root.'/'.$ulsdir;
1580: }
1.399 raeburn 1581: }
1582: my $obs;
1583: my $rights;
1584: my $ulsout='';
1585: my $ulsfn;
1586: if (-e $ulsdir) {
1587: if(-d $ulsdir) {
1588: if (opendir(LSDIR,$ulsdir)) {
1589: while ($ulsfn=readdir(LSDIR)) {
1590: undef($obs);
1591: undef($rights);
1592: my @ulsstats=stat($ulsdir.'/'.$ulsfn);
1593: #We do some obsolete checking here
1594: if(-e $ulsdir.'/'.$ulsfn.".meta") {
1595: open(FILE, $ulsdir.'/'.$ulsfn.".meta");
1596: my @obsolete=<FILE>;
1597: foreach my $obsolete (@obsolete) {
1598: if($obsolete =~ m/(<obsolete>)(on|1)/) { $obs = 1; }
1599: if($obsolete =~ m|(<copyright>)(default)|) {
1600: $rights = 1;
1601: }
1602: }
1603: }
1604: my $tmp = $ulsfn.'&'.join('&',@ulsstats);
1605: if ($obs eq '1') { $tmp.="&1"; } else { $tmp.="&0"; }
1606: if ($rights eq '1') { $tmp.="&1"; } else { $tmp.="&0"; }
1607: $ulsout.= &escape($tmp).':';
1608: }
1609: closedir(LSDIR);
1610: }
1611: } else {
1612: my @ulsstats=stat($ulsdir);
1613: $ulsout.=$ulsfn.'&'.join('&',@ulsstats).':';
1614: }
1615: } else {
1616: $ulsout='no_such_dir';
1.400 raeburn 1617: }
1618: if ($ulsout eq '') { $ulsout='empty'; }
1619: &Reply($client, \$ulsout, $userinput); # This supports debug logging.
1620: return 1;
1.399 raeburn 1621: }
1622: ®ister_handler("ls3", \&ls3_handler, 0, 1, 0);
1.280 matthew 1623:
1.410 raeburn 1624: sub server_timezone_handler {
1625: my ($cmd,$tail,$client) = @_;
1626: my $userinput = "$cmd:$tail";
1627: my $timezone;
1628: my $clockfile = '/etc/sysconfig/clock'; # Fedora/CentOS/SuSE
1629: my $tzfile = '/etc/timezone'; # Debian/Ubuntu
1630: if (-e $clockfile) {
1631: if (open(my $fh,"<$clockfile")) {
1632: while (<$fh>) {
1633: next if (/^[\#\s]/);
1634: if (/^(?:TIME)?ZONE\s*=\s*['"]?\s*([\w\/]+)/) {
1635: $timezone = $1;
1636: last;
1637: }
1638: }
1639: close($fh);
1640: }
1641: } elsif (-e $tzfile) {
1642: if (open(my $fh,"<$tzfile")) {
1643: $timezone = <$fh>;
1644: close($fh);
1645: chomp($timezone);
1646: if ($timezone =~ m{^Etc/(\w+)$}) {
1647: $timezone = $1;
1648: }
1649: }
1650: }
1651: &Reply($client,\$timezone,$userinput); # This supports debug logging.
1652: return 1;
1653: }
1654: ®ister_handler("servertimezone", \&server_timezone_handler, 0, 1, 0);
1655:
1.413 raeburn 1656: sub server_loncaparev_handler {
1657: my ($cmd,$tail,$client) = @_;
1658: my $userinput = "$cmd:$tail";
1659: &Reply($client,\$perlvar{'lonVersion'},$userinput);
1660: return 1;
1661: }
1662: ®ister_handler("serverloncaparev", \&server_loncaparev_handler, 0, 1, 0);
1663:
1.448 raeburn 1664: sub server_homeID_handler {
1665: my ($cmd,$tail,$client) = @_;
1666: my $userinput = "$cmd:$tail";
1667: &Reply($client,\$perlvar{'lonHostID'},$userinput);
1668: return 1;
1669: }
1670: ®ister_handler("serverhomeID", \&server_homeID_handler, 0, 1, 0);
1671:
1.218 foxr 1672: # Process a reinit request. Reinit requests that either
1673: # lonc or lond be reinitialized so that an updated
1674: # host.tab or domain.tab can be processed.
1675: #
1676: # Parameters:
1677: # $cmd - the actual keyword that invoked us.
1678: # $tail - the tail of the request that invoked us.
1679: # $client - File descriptor connected to the client
1680: # Returns:
1681: # 1 - Ok to continue processing.
1682: # 0 - Program should exit
1683: # Implicit output:
1684: # a reply is sent to the client.
1685: #
1686: sub reinit_process_handler {
1687: my ($cmd, $tail, $client) = @_;
1688:
1689: my $userinput = "$cmd:$tail";
1690:
1691: my $cert = &GetCertificate($userinput);
1692: if(&ValidManager($cert)) {
1693: chomp($userinput);
1694: my $reply = &ReinitProcess($userinput);
1.387 albertel 1695: &Reply( $client, \$reply, $userinput);
1.218 foxr 1696: } else {
1697: &Failure( $client, "refused\n", $userinput);
1698: }
1699: return 1;
1700: }
1701: ®ister_handler("reinit", \&reinit_process_handler, 1, 0, 1);
1702:
1703: # Process the editing script for a table edit operation.
1704: # the editing operation must be encrypted and requested by
1705: # a manager host.
1706: #
1707: # Parameters:
1708: # $cmd - the actual keyword that invoked us.
1709: # $tail - the tail of the request that invoked us.
1710: # $client - File descriptor connected to the client
1711: # Returns:
1712: # 1 - Ok to continue processing.
1713: # 0 - Program should exit
1714: # Implicit output:
1715: # a reply is sent to the client.
1716: #
1717: sub edit_table_handler {
1718: my ($command, $tail, $client) = @_;
1719:
1720: my $userinput = "$command:$tail";
1721:
1722: my $cert = &GetCertificate($userinput);
1723: if(&ValidManager($cert)) {
1724: my($filetype, $script) = split(/:/, $tail);
1725: if (($filetype eq "hosts") ||
1726: ($filetype eq "domain")) {
1727: if($script ne "") {
1728: &Reply($client, # BUGBUG - EditFile
1729: &EditFile($userinput), # could fail.
1730: $userinput);
1731: } else {
1732: &Failure($client,"refused\n",$userinput);
1733: }
1734: } else {
1735: &Failure($client,"refused\n",$userinput);
1736: }
1737: } else {
1738: &Failure($client,"refused\n",$userinput);
1739: }
1740: return 1;
1741: }
1.263 albertel 1742: ®ister_handler("edit", \&edit_table_handler, 1, 0, 1);
1.218 foxr 1743:
1.220 foxr 1744: #
1745: # Authenticate a user against the LonCAPA authentication
1746: # database. Note that there are several authentication
1747: # possibilities:
1748: # - unix - The user can be authenticated against the unix
1749: # password file.
1750: # - internal - The user can be authenticated against a purely
1751: # internal per user password file.
1752: # - kerberos - The user can be authenticated against either a kerb4 or kerb5
1753: # ticket granting authority.
1754: # - user - The person tailoring LonCAPA can supply a user authentication
1755: # mechanism that is per system.
1756: #
1757: # Parameters:
1758: # $cmd - The command that got us here.
1759: # $tail - Tail of the command (remaining parameters).
1760: # $client - File descriptor connected to client.
1761: # Returns
1762: # 0 - Requested to exit, caller should shut down.
1763: # 1 - Continue processing.
1764: # Implicit inputs:
1765: # The authentication systems describe above have their own forms of implicit
1766: # input into the authentication process that are described above.
1767: #
1768: sub authenticate_handler {
1769: my ($cmd, $tail, $client) = @_;
1770:
1771:
1772: # Regenerate the full input line
1773:
1774: my $userinput = $cmd.":".$tail;
1775:
1776: # udom - User's domain.
1777: # uname - Username.
1778: # upass - User's password.
1.396 raeburn 1779: # checkdefauth - Pass to validate_user() to try authentication
1780: # with default auth type(s) if no user account.
1.447 raeburn 1781: # clientcancheckhost - Passed by clients with functionality in lonauth.pm
1782: # to check if session can be hosted.
1.220 foxr 1783:
1.447 raeburn 1784: my ($udom, $uname, $upass, $checkdefauth, $clientcancheckhost)=split(/:/,$tail);
1.399 raeburn 1785: &Debug(" Authenticate domain = $udom, user = $uname, password = $upass, checkdefauth = $checkdefauth");
1.220 foxr 1786: chomp($upass);
1787: $upass=&unescape($upass);
1788:
1.396 raeburn 1789: my $pwdcorrect = &validate_user($udom,$uname,$upass,$checkdefauth);
1.220 foxr 1790: if($pwdcorrect) {
1.447 raeburn 1791: my $canhost = 1;
1792: unless ($clientcancheckhost) {
1.448 raeburn 1793: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
1794: my $uint_dom = &Apache::lonnet::internet_dom($uprimary_id);
1.452 raeburn 1795: my @intdoms;
1796: my $internet_names = &Apache::lonnet::get_internet_names($clientname);
1797: if (ref($internet_names) eq 'ARRAY') {
1798: @intdoms = @{$internet_names};
1799: }
1.448 raeburn 1800: unless ($uint_dom ne '' && grep(/^\Q$uint_dom\E$/,@intdoms)) {
1.447 raeburn 1801: my ($remote,$hosted);
1802: my $remotesession = &get_usersession_config($udom,'remotesession');
1803: if (ref($remotesession) eq 'HASH') {
1804: $remote = $remotesession->{'remote'}
1805: }
1.448 raeburn 1806: my $hostedsession = &get_usersession_config($clienthomedom,'hostedsession');
1.447 raeburn 1807: if (ref($hostedsession) eq 'HASH') {
1808: $hosted = $hostedsession->{'hosted'};
1809: }
1.449 raeburn 1810: my $loncaparev = $clientversion;
1811: if ($loncaparev eq '') {
1812: $loncaparev = $Apache::lonnet::loncaparevs{$clientname};
1813: }
1.448 raeburn 1814: $canhost = &Apache::lonnet::can_host_session($udom,$clientname,
1.449 raeburn 1815: $loncaparev,
1.447 raeburn 1816: $remote,$hosted);
1817: }
1818: }
1819: if ($canhost) {
1820: &Reply( $client, "authorized\n", $userinput);
1821: } else {
1822: &Reply( $client, "not_allowed_to_host\n", $userinput);
1823: }
1.220 foxr 1824: #
1825: # Bad credentials: Failed to authorize
1826: #
1827: } else {
1828: &Failure( $client, "non_authorized\n", $userinput);
1829: }
1830:
1831: return 1;
1832: }
1.263 albertel 1833: ®ister_handler("auth", \&authenticate_handler, 1, 1, 0);
1.214 foxr 1834:
1.222 foxr 1835: #
1836: # Change a user's password. Note that this function is complicated by
1837: # the fact that a user may be authenticated in more than one way:
1838: # At present, we are not able to change the password for all types of
1839: # authentication methods. Only for:
1840: # unix - unix password or shadow passoword style authentication.
1841: # local - Locally written authentication mechanism.
1842: # For now, kerb4 and kerb5 password changes are not supported and result
1843: # in an error.
1844: # FUTURE WORK:
1845: # Support kerberos passwd changes?
1846: # Parameters:
1847: # $cmd - The command that got us here.
1848: # $tail - Tail of the command (remaining parameters).
1849: # $client - File descriptor connected to client.
1850: # Returns
1851: # 0 - Requested to exit, caller should shut down.
1852: # 1 - Continue processing.
1853: # Implicit inputs:
1854: # The authentication systems describe above have their own forms of implicit
1855: # input into the authentication process that are described above.
1856: sub change_password_handler {
1857: my ($cmd, $tail, $client) = @_;
1858:
1859: my $userinput = $cmd.":".$tail; # Reconstruct client's string.
1860:
1861: #
1862: # udom - user's domain.
1863: # uname - Username.
1864: # upass - Current password.
1865: # npass - New password.
1.346 raeburn 1866: # context - Context in which this was called
1867: # (preferences or reset_by_email).
1.428 raeburn 1868: # lonhost - HostID of server where request originated
1.222 foxr 1869:
1.428 raeburn 1870: my ($udom,$uname,$upass,$npass,$context,$lonhost)=split(/:/,$tail);
1.222 foxr 1871:
1872: $upass=&unescape($upass);
1873: $npass=&unescape($npass);
1874: &Debug("Trying to change password for $uname");
1875:
1876: # First require that the user can be authenticated with their
1.346 raeburn 1877: # old password unless context was 'reset_by_email':
1878:
1.428 raeburn 1879: my ($validated,$failure);
1.346 raeburn 1880: if ($context eq 'reset_by_email') {
1.428 raeburn 1881: if ($lonhost eq '') {
1882: $failure = 'invalid_client';
1883: } else {
1884: $validated = 1;
1885: }
1.346 raeburn 1886: } else {
1887: $validated = &validate_user($udom, $uname, $upass);
1888: }
1.222 foxr 1889: if($validated) {
1890: my $realpasswd = &get_auth_type($udom, $uname); # Defined since authd.
1891:
1892: my ($howpwd,$contentpwd)=split(/:/,$realpasswd);
1893: if ($howpwd eq 'internal') {
1894: &Debug("internal auth");
1895: my $salt=time;
1896: $salt=substr($salt,6,2);
1897: my $ncpass=crypt($npass,$salt);
1898: if(&rewrite_password_file($udom, $uname, "internal:$ncpass")) {
1.428 raeburn 1899: my $msg="Result of password change for $uname: pwchange_success";
1900: if ($lonhost) {
1901: $msg .= " - request originated from: $lonhost";
1902: }
1903: &logthis($msg);
1.222 foxr 1904: &Reply($client, "ok\n", $userinput);
1905: } else {
1906: &logthis("Unable to open $uname passwd "
1907: ."to change password");
1908: &Failure( $client, "non_authorized\n",$userinput);
1909: }
1.346 raeburn 1910: } elsif ($howpwd eq 'unix' && $context ne 'reset_by_email') {
1.287 foxr 1911: my $result = &change_unix_password($uname, $npass);
1.222 foxr 1912: &logthis("Result of password change for $uname: ".
1.287 foxr 1913: $result);
1.387 albertel 1914: &Reply($client, \$result, $userinput);
1.222 foxr 1915: } else {
1916: # this just means that the current password mode is not
1917: # one we know how to change (e.g the kerberos auth modes or
1918: # locally written auth handler).
1919: #
1920: &Failure( $client, "auth_mode_error\n", $userinput);
1921: }
1922:
1.224 foxr 1923: } else {
1.428 raeburn 1924: if ($failure eq '') {
1925: $failure = 'non_authorized';
1926: }
1927: &Failure( $client, "$failure\n", $userinput);
1.222 foxr 1928: }
1929:
1930: return 1;
1931: }
1.263 albertel 1932: ®ister_handler("passwd", \&change_password_handler, 1, 1, 0);
1.222 foxr 1933:
1.225 foxr 1934: #
1935: # Create a new user. User in this case means a lon-capa user.
1936: # The user must either already exist in some authentication realm
1937: # like kerberos or the /etc/passwd. If not, a user completely local to
1938: # this loncapa system is created.
1939: #
1940: # Parameters:
1941: # $cmd - The command that got us here.
1942: # $tail - Tail of the command (remaining parameters).
1943: # $client - File descriptor connected to client.
1944: # Returns
1945: # 0 - Requested to exit, caller should shut down.
1946: # 1 - Continue processing.
1947: # Implicit inputs:
1948: # The authentication systems describe above have their own forms of implicit
1949: # input into the authentication process that are described above.
1950: sub add_user_handler {
1951:
1952: my ($cmd, $tail, $client) = @_;
1953:
1954:
1955: my ($udom,$uname,$umode,$npass)=split(/:/,$tail);
1956: my $userinput = $cmd.":".$tail; # Reconstruct the full request line.
1957:
1958: &Debug("cmd =".$cmd." $udom =".$udom." uname=".$uname);
1959:
1960:
1961: if($udom eq $currentdomainid) { # Reject new users for other domains...
1962:
1963: my $oldumask=umask(0077);
1964: chomp($npass);
1965: $npass=&unescape($npass);
1966: my $passfilename = &password_path($udom, $uname);
1967: &Debug("Password file created will be:".$passfilename);
1968: if (-e $passfilename) {
1969: &Failure( $client, "already_exists\n", $userinput);
1970: } else {
1971: my $fperror='';
1.264 albertel 1972: if (!&mkpath($passfilename)) {
1973: $fperror="error: ".($!+0)." mkdir failed while attempting "
1974: ."makeuser";
1.225 foxr 1975: }
1976: unless ($fperror) {
1977: my $result=&make_passwd_file($uname, $umode,$npass, $passfilename);
1.390 raeburn 1978: &Reply($client,\$result, $userinput); #BUGBUG - could be fail
1.225 foxr 1979: } else {
1.387 albertel 1980: &Failure($client, \$fperror, $userinput);
1.225 foxr 1981: }
1982: }
1983: umask($oldumask);
1984: } else {
1985: &Failure($client, "not_right_domain\n",
1986: $userinput); # Even if we are multihomed.
1987:
1988: }
1989: return 1;
1990:
1991: }
1992: ®ister_handler("makeuser", \&add_user_handler, 1, 1, 0);
1993:
1994: #
1995: # Change the authentication method of a user. Note that this may
1996: # also implicitly change the user's password if, for example, the user is
1997: # joining an existing authentication realm. Known authentication realms at
1998: # this time are:
1999: # internal - Purely internal password file (only loncapa knows this user)
2000: # local - Institutionally written authentication module.
2001: # unix - Unix user (/etc/passwd with or without /etc/shadow).
2002: # kerb4 - kerberos version 4
2003: # kerb5 - kerberos version 5
2004: #
2005: # Parameters:
2006: # $cmd - The command that got us here.
2007: # $tail - Tail of the command (remaining parameters).
2008: # $client - File descriptor connected to client.
2009: # Returns
2010: # 0 - Requested to exit, caller should shut down.
2011: # 1 - Continue processing.
2012: # Implicit inputs:
2013: # The authentication systems describe above have their own forms of implicit
2014: # input into the authentication process that are described above.
1.287 foxr 2015: # NOTE:
2016: # This is also used to change the authentication credential values (e.g. passwd).
2017: #
1.225 foxr 2018: #
2019: sub change_authentication_handler {
2020:
2021: my ($cmd, $tail, $client) = @_;
2022:
2023: my $userinput = "$cmd:$tail"; # Reconstruct user input.
2024:
2025: my ($udom,$uname,$umode,$npass)=split(/:/,$tail);
2026: &Debug("cmd = ".$cmd." domain= ".$udom."uname =".$uname." umode= ".$umode);
2027: if ($udom ne $currentdomainid) {
2028: &Failure( $client, "not_right_domain\n", $client);
2029: } else {
2030:
2031: chomp($npass);
2032:
2033: $npass=&unescape($npass);
1.261 foxr 2034: my $oldauth = &get_auth_type($udom, $uname); # Get old auth info.
1.225 foxr 2035: my $passfilename = &password_path($udom, $uname);
2036: if ($passfilename) { # Not allowed to create a new user!!
1.287 foxr 2037: # If just changing the unix passwd. need to arrange to run
2038: # passwd since otherwise make_passwd_file will run
2039: # lcuseradd which fails if an account already exists
2040: # (to prevent an unscrupulous LONCAPA admin from stealing
2041: # an existing account by overwriting it as a LonCAPA account).
2042:
2043: if(($oldauth =~/^unix/) && ($umode eq "unix")) {
2044: my $result = &change_unix_password($uname, $npass);
2045: &logthis("Result of password change for $uname: ".$result);
2046: if ($result eq "ok") {
1.390 raeburn 2047: &Reply($client, \$result);
1.288 albertel 2048: } else {
1.387 albertel 2049: &Failure($client, \$result);
1.287 foxr 2050: }
1.288 albertel 2051: } else {
1.287 foxr 2052: my $result=&make_passwd_file($uname, $umode,$npass,$passfilename);
2053: #
2054: # If the current auth mode is internal, and the old auth mode was
2055: # unix, or krb*, and the user is an author for this domain,
2056: # re-run manage_permissions for that role in order to be able
2057: # to take ownership of the construction space back to www:www
2058: #
2059:
2060:
2061: if( (($oldauth =~ /^unix/) && ($umode eq "internal")) ||
2062: (($oldauth =~ /^internal/) && ($umode eq "unix")) ) {
2063: if(&is_author($udom, $uname)) {
2064: &Debug(" Need to manage author permissions...");
2065: &manage_permissions("/$udom/_au", $udom, $uname, "$umode:");
2066: }
1.261 foxr 2067: }
1.387 albertel 2068: &Reply($client, \$result, $userinput);
1.261 foxr 2069: }
2070:
2071:
1.225 foxr 2072: } else {
1.251 foxr 2073: &Failure($client, "non_authorized\n", $userinput); # Fail the user now.
1.225 foxr 2074: }
2075: }
2076: return 1;
2077: }
2078: ®ister_handler("changeuserauth", \&change_authentication_handler, 1,1, 0);
2079:
2080: #
2081: # Determines if this is the home server for a user. The home server
2082: # for a user will have his/her lon-capa passwd file. Therefore all we need
2083: # to do is determine if this file exists.
2084: #
2085: # Parameters:
2086: # $cmd - The command that got us here.
2087: # $tail - Tail of the command (remaining parameters).
2088: # $client - File descriptor connected to client.
2089: # Returns
2090: # 0 - Requested to exit, caller should shut down.
2091: # 1 - Continue processing.
2092: # Implicit inputs:
2093: # The authentication systems describe above have their own forms of implicit
2094: # input into the authentication process that are described above.
2095: #
2096: sub is_home_handler {
2097: my ($cmd, $tail, $client) = @_;
2098:
2099: my $userinput = "$cmd:$tail";
2100:
2101: my ($udom,$uname)=split(/:/,$tail);
2102: chomp($uname);
2103: my $passfile = &password_filename($udom, $uname);
2104: if($passfile) {
2105: &Reply( $client, "found\n", $userinput);
2106: } else {
2107: &Failure($client, "not_found\n", $userinput);
2108: }
2109: return 1;
2110: }
2111: ®ister_handler("home", \&is_home_handler, 0,1,0);
2112:
2113: #
1.434 www 2114: # Process an update request for a resource.
2115: # A resource has been modified that we hold a subscription to.
1.225 foxr 2116: # If the resource is not local, then we must update, or at least invalidate our
2117: # cached copy of the resource.
2118: # Parameters:
2119: # $cmd - The command that got us here.
2120: # $tail - Tail of the command (remaining parameters).
2121: # $client - File descriptor connected to client.
2122: # Returns
2123: # 0 - Requested to exit, caller should shut down.
2124: # 1 - Continue processing.
2125: # Implicit inputs:
2126: # The authentication systems describe above have their own forms of implicit
2127: # input into the authentication process that are described above.
2128: #
2129: sub update_resource_handler {
2130:
2131: my ($cmd, $tail, $client) = @_;
2132:
2133: my $userinput = "$cmd:$tail";
2134:
2135: my $fname= $tail; # This allows interactive testing
2136:
2137:
2138: my $ownership=ishome($fname);
2139: if ($ownership eq 'not_owner') {
2140: if (-e $fname) {
1.434 www 2141: # Delete preview file, if exists
2142: unlink("$fname.tmp");
2143: # Get usage stats
1.225 foxr 2144: my ($dev,$ino,$mode,$nlink,$uid,$gid,$rdev,$size,
2145: $atime,$mtime,$ctime,$blksize,$blocks)=stat($fname);
2146: my $now=time;
2147: my $since=$now-$atime;
1.434 www 2148: # If the file has not been used within lonExpire seconds,
2149: # unsubscribe from it and delete local copy
1.225 foxr 2150: if ($since>$perlvar{'lonExpire'}) {
1.365 albertel 2151: my $reply=&Apache::lonnet::reply("unsub:$fname","$clientname");
1.308 albertel 2152: &devalidate_meta_cache($fname);
1.225 foxr 2153: unlink("$fname");
1.334 albertel 2154: unlink("$fname.meta");
1.225 foxr 2155: } else {
1.434 www 2156: # Yes, this is in active use. Get a fresh copy. Since it might be in
2157: # very active use and huge (like a movie), copy it to "in.transfer" filename first.
1.225 foxr 2158: my $transname="$fname.in.transfer";
1.365 albertel 2159: my $remoteurl=&Apache::lonnet::reply("sub:$fname","$clientname");
1.225 foxr 2160: my $response;
1.455 www 2161: # FIXME: cannot replicate files that take more than two minutes to transfer?
2162: # alarm(120);
2163: # FIXME: this should use the LWP mechanism, not internal alarms.
2164: alarm(1200);
1.225 foxr 2165: {
2166: my $ua=new LWP::UserAgent;
2167: my $request=new HTTP::Request('GET',"$remoteurl");
2168: $response=$ua->request($request,$transname);
2169: }
2170: alarm(0);
2171: if ($response->is_error()) {
1.455 www 2172: # FIXME: we should probably clean up here instead of just whine
1.225 foxr 2173: unlink($transname);
2174: my $message=$response->status_line;
2175: &logthis("LWP GET: $message for $fname ($remoteurl)");
2176: } else {
2177: if ($remoteurl!~/\.meta$/) {
1.455 www 2178: # FIXME: isn't there an internal LWP mechanism for this?
1.225 foxr 2179: alarm(120);
2180: {
2181: my $ua=new LWP::UserAgent;
2182: my $mrequest=new HTTP::Request('GET',$remoteurl.'.meta');
2183: my $mresponse=$ua->request($mrequest,$fname.'.meta');
2184: if ($mresponse->is_error()) {
2185: unlink($fname.'.meta');
2186: }
2187: }
2188: alarm(0);
2189: }
1.434 www 2190: # we successfully transfered, copy file over to real name
1.225 foxr 2191: rename($transname,$fname);
1.308 albertel 2192: &devalidate_meta_cache($fname);
1.225 foxr 2193: }
2194: }
2195: &Reply( $client, "ok\n", $userinput);
2196: } else {
2197: &Failure($client, "not_found\n", $userinput);
2198: }
2199: } else {
2200: &Failure($client, "rejected\n", $userinput);
2201: }
2202: return 1;
2203: }
2204: ®ister_handler("update", \&update_resource_handler, 0 ,1, 0);
2205:
1.308 albertel 2206: sub devalidate_meta_cache {
2207: my ($url) = @_;
2208: use Cache::Memcached;
2209: my $memcache = new Cache::Memcached({'servers'=>['127.0.0.1:11211']});
1.365 albertel 2210: $url = &Apache::lonnet::declutter($url);
1.308 albertel 2211: $url =~ s-\.meta$--;
2212: my $id = &escape('meta:'.$url);
2213: $memcache->delete($id);
2214: }
2215:
1.225 foxr 2216: #
1.226 foxr 2217: # Fetch a user file from a remote server to the user's home directory
2218: # userfiles subdir.
1.225 foxr 2219: # Parameters:
2220: # $cmd - The command that got us here.
2221: # $tail - Tail of the command (remaining parameters).
2222: # $client - File descriptor connected to client.
2223: # Returns
2224: # 0 - Requested to exit, caller should shut down.
2225: # 1 - Continue processing.
2226: #
2227: sub fetch_user_file_handler {
2228:
2229: my ($cmd, $tail, $client) = @_;
2230:
2231: my $userinput = "$cmd:$tail";
2232: my $fname = $tail;
1.232 foxr 2233: my ($udom,$uname,$ufile) = ($fname =~ m|^([^/]+)/([^/]+)/(.+)$|);
1.225 foxr 2234: my $udir=&propath($udom,$uname).'/userfiles';
2235: unless (-e $udir) {
2236: mkdir($udir,0770);
2237: }
1.232 foxr 2238: Debug("fetch user file for $fname");
1.225 foxr 2239: if (-e $udir) {
2240: $ufile=~s/^[\.\~]+//;
1.232 foxr 2241:
2242: # IF necessary, create the path right down to the file.
2243: # Note that any regular files in the way of this path are
2244: # wiped out to deal with some earlier folly of mine.
2245:
1.267 raeburn 2246: if (!&mkpath($udir.'/'.$ufile)) {
1.264 albertel 2247: &Failure($client, "unable_to_create\n", $userinput);
1.232 foxr 2248: }
2249:
1.225 foxr 2250: my $destname=$udir.'/'.$ufile;
2251: my $transname=$udir.'/'.$ufile.'.in.transit';
2252: my $remoteurl='http://'.$clientip.'/userfiles/'.$fname;
2253: my $response;
1.232 foxr 2254: Debug("Remote URL : $remoteurl Transfername $transname Destname: $destname");
1.225 foxr 2255: alarm(120);
2256: {
2257: my $ua=new LWP::UserAgent;
2258: my $request=new HTTP::Request('GET',"$remoteurl");
2259: $response=$ua->request($request,$transname);
2260: }
2261: alarm(0);
2262: if ($response->is_error()) {
2263: unlink($transname);
2264: my $message=$response->status_line;
2265: &logthis("LWP GET: $message for $fname ($remoteurl)");
2266: &Failure($client, "failed\n", $userinput);
2267: } else {
1.232 foxr 2268: Debug("Renaming $transname to $destname");
1.225 foxr 2269: if (!rename($transname,$destname)) {
2270: &logthis("Unable to move $transname to $destname");
2271: unlink($transname);
2272: &Failure($client, "failed\n", $userinput);
2273: } else {
2274: &Reply($client, "ok\n", $userinput);
2275: }
2276: }
2277: } else {
2278: &Failure($client, "not_home\n", $userinput);
2279: }
2280: return 1;
2281: }
2282: ®ister_handler("fetchuserfile", \&fetch_user_file_handler, 0, 1, 0);
2283:
1.226 foxr 2284: #
2285: # Remove a file from a user's home directory userfiles subdirectory.
2286: # Parameters:
2287: # cmd - the Lond request keyword that got us here.
2288: # tail - the part of the command past the keyword.
2289: # client- File descriptor connected with the client.
2290: #
2291: # Returns:
2292: # 1 - Continue processing.
2293: sub remove_user_file_handler {
2294: my ($cmd, $tail, $client) = @_;
2295:
2296: my ($fname) = split(/:/, $tail); # Get rid of any tailing :'s lonc may have sent.
2297:
2298: my ($udom,$uname,$ufile) = ($fname =~ m|^([^/]+)/([^/]+)/(.+)$|);
2299: if ($ufile =~m|/\.\./|) {
2300: # any files paths with /../ in them refuse
2301: # to deal with
2302: &Failure($client, "refused\n", "$cmd:$tail");
2303: } else {
2304: my $udir = &propath($udom,$uname);
2305: if (-e $udir) {
2306: my $file=$udir.'/userfiles/'.$ufile;
2307: if (-e $file) {
1.253 foxr 2308: #
2309: # If the file is a regular file unlink is fine...
2310: # However it's possible the client wants a dir.
2311: # removed, in which case rmdir is more approprate:
2312: #
1.240 banghart 2313: if (-f $file){
1.241 albertel 2314: unlink($file);
2315: } elsif(-d $file) {
2316: rmdir($file);
1.240 banghart 2317: }
1.226 foxr 2318: if (-e $file) {
1.253 foxr 2319: # File is still there after we deleted it ?!?
2320:
1.226 foxr 2321: &Failure($client, "failed\n", "$cmd:$tail");
2322: } else {
2323: &Reply($client, "ok\n", "$cmd:$tail");
2324: }
2325: } else {
2326: &Failure($client, "not_found\n", "$cmd:$tail");
2327: }
2328: } else {
2329: &Failure($client, "not_home\n", "$cmd:$tail");
2330: }
2331: }
2332: return 1;
2333: }
2334: ®ister_handler("removeuserfile", \&remove_user_file_handler, 0,1,0);
2335:
1.236 albertel 2336: #
2337: # make a directory in a user's home directory userfiles subdirectory.
2338: # Parameters:
2339: # cmd - the Lond request keyword that got us here.
2340: # tail - the part of the command past the keyword.
2341: # client- File descriptor connected with the client.
2342: #
2343: # Returns:
2344: # 1 - Continue processing.
2345: sub mkdir_user_file_handler {
2346: my ($cmd, $tail, $client) = @_;
2347:
2348: my ($dir) = split(/:/, $tail); # Get rid of any tailing :'s lonc may have sent.
2349: $dir=&unescape($dir);
2350: my ($udom,$uname,$ufile) = ($dir =~ m|^([^/]+)/([^/]+)/(.+)$|);
2351: if ($ufile =~m|/\.\./|) {
2352: # any files paths with /../ in them refuse
2353: # to deal with
2354: &Failure($client, "refused\n", "$cmd:$tail");
2355: } else {
2356: my $udir = &propath($udom,$uname);
2357: if (-e $udir) {
1.264 albertel 2358: my $newdir=$udir.'/userfiles/'.$ufile.'/';
2359: if (!&mkpath($newdir)) {
2360: &Failure($client, "failed\n", "$cmd:$tail");
1.236 albertel 2361: }
1.264 albertel 2362: &Reply($client, "ok\n", "$cmd:$tail");
1.236 albertel 2363: } else {
2364: &Failure($client, "not_home\n", "$cmd:$tail");
2365: }
2366: }
2367: return 1;
2368: }
2369: ®ister_handler("mkdiruserfile", \&mkdir_user_file_handler, 0,1,0);
2370:
1.237 albertel 2371: #
2372: # rename a file in a user's home directory userfiles subdirectory.
2373: # Parameters:
2374: # cmd - the Lond request keyword that got us here.
2375: # tail - the part of the command past the keyword.
2376: # client- File descriptor connected with the client.
2377: #
2378: # Returns:
2379: # 1 - Continue processing.
2380: sub rename_user_file_handler {
2381: my ($cmd, $tail, $client) = @_;
2382:
2383: my ($udom,$uname,$old,$new) = split(/:/, $tail);
2384: $old=&unescape($old);
2385: $new=&unescape($new);
2386: if ($new =~m|/\.\./| || $old =~m|/\.\./|) {
2387: # any files paths with /../ in them refuse to deal with
2388: &Failure($client, "refused\n", "$cmd:$tail");
2389: } else {
2390: my $udir = &propath($udom,$uname);
2391: if (-e $udir) {
2392: my $oldfile=$udir.'/userfiles/'.$old;
2393: my $newfile=$udir.'/userfiles/'.$new;
2394: if (-e $newfile) {
2395: &Failure($client, "exists\n", "$cmd:$tail");
2396: } elsif (! -e $oldfile) {
2397: &Failure($client, "not_found\n", "$cmd:$tail");
2398: } else {
2399: if (!rename($oldfile,$newfile)) {
2400: &Failure($client, "failed\n", "$cmd:$tail");
2401: } else {
2402: &Reply($client, "ok\n", "$cmd:$tail");
2403: }
2404: }
2405: } else {
2406: &Failure($client, "not_home\n", "$cmd:$tail");
2407: }
2408: }
2409: return 1;
2410: }
2411: ®ister_handler("renameuserfile", \&rename_user_file_handler, 0,1,0);
2412:
1.227 foxr 2413: #
1.382 albertel 2414: # Checks if the specified user has an active session on the server
2415: # return ok if so, not_found if not
2416: #
2417: # Parameters:
2418: # cmd - The request keyword that dispatched to tus.
2419: # tail - The tail of the request (colon separated parameters).
2420: # client - Filehandle open on the client.
2421: # Return:
2422: # 1.
2423: sub user_has_session_handler {
2424: my ($cmd, $tail, $client) = @_;
2425:
2426: my ($udom, $uname) = map { &unescape($_) } (split(/:/, $tail));
2427:
2428: opendir(DIR,$perlvar{'lonIDsDir'});
2429: my $filename;
2430: while ($filename=readdir(DIR)) {
2431: last if ($filename=~/^\Q$uname\E_\d+_\Q$udom\E_/);
2432: }
2433: if ($filename) {
2434: &Reply($client, "ok\n", "$cmd:$tail");
2435: } else {
2436: &Failure($client, "not_found\n", "$cmd:$tail");
2437: }
2438: return 1;
2439:
2440: }
2441: ®ister_handler("userhassession", \&user_has_session_handler, 0,1,0);
2442:
2443: #
1.263 albertel 2444: # Authenticate access to a user file by checking that the token the user's
2445: # passed also exists in their session file
1.227 foxr 2446: #
2447: # Parameters:
2448: # cmd - The request keyword that dispatched to tus.
2449: # tail - The tail of the request (colon separated parameters).
2450: # client - Filehandle open on the client.
2451: # Return:
2452: # 1.
2453: sub token_auth_user_file_handler {
2454: my ($cmd, $tail, $client) = @_;
2455:
2456: my ($fname, $session) = split(/:/, $tail);
2457:
2458: chomp($session);
1.393 raeburn 2459: my $reply="non_auth";
1.343 albertel 2460: my $file = $perlvar{'lonIDsDir'}.'/'.$session.'.id';
2461: if (open(ENVIN,"$file")) {
1.332 albertel 2462: flock(ENVIN,LOCK_SH);
1.343 albertel 2463: tie(my %disk_env,'GDBM_File',"$file",&GDBM_READER(),0640);
2464: if (exists($disk_env{"userfile.$fname"})) {
1.393 raeburn 2465: $reply="ok";
1.343 albertel 2466: } else {
2467: foreach my $envname (keys(%disk_env)) {
2468: if ($envname=~ m|^userfile\.\Q$fname\E|) {
1.393 raeburn 2469: $reply="ok";
1.343 albertel 2470: last;
2471: }
2472: }
1.227 foxr 2473: }
1.343 albertel 2474: untie(%disk_env);
1.227 foxr 2475: close(ENVIN);
1.387 albertel 2476: &Reply($client, \$reply, "$cmd:$tail");
1.227 foxr 2477: } else {
2478: &Failure($client, "invalid_token\n", "$cmd:$tail");
2479: }
2480: return 1;
2481:
2482: }
2483: ®ister_handler("tokenauthuserfile", \&token_auth_user_file_handler, 0,1,0);
1.229 foxr 2484:
2485: #
2486: # Unsubscribe from a resource.
2487: #
2488: # Parameters:
2489: # $cmd - The command that got us here.
2490: # $tail - Tail of the command (remaining parameters).
2491: # $client - File descriptor connected to client.
2492: # Returns
2493: # 0 - Requested to exit, caller should shut down.
2494: # 1 - Continue processing.
2495: #
2496: sub unsubscribe_handler {
2497: my ($cmd, $tail, $client) = @_;
2498:
2499: my $userinput= "$cmd:$tail";
2500:
2501: my ($fname) = split(/:/,$tail); # Split in case there's extrs.
2502:
2503: &Debug("Unsubscribing $fname");
2504: if (-e $fname) {
2505: &Debug("Exists");
2506: &Reply($client, &unsub($fname,$clientip), $userinput);
2507: } else {
2508: &Failure($client, "not_found\n", $userinput);
2509: }
2510: return 1;
2511: }
2512: ®ister_handler("unsub", \&unsubscribe_handler, 0, 1, 0);
1.263 albertel 2513:
1.230 foxr 2514: # Subscribe to a resource
2515: #
2516: # Parameters:
2517: # $cmd - The command that got us here.
2518: # $tail - Tail of the command (remaining parameters).
2519: # $client - File descriptor connected to client.
2520: # Returns
2521: # 0 - Requested to exit, caller should shut down.
2522: # 1 - Continue processing.
2523: #
2524: sub subscribe_handler {
2525: my ($cmd, $tail, $client)= @_;
2526:
2527: my $userinput = "$cmd:$tail";
2528:
2529: &Reply( $client, &subscribe($userinput,$clientip), $userinput);
2530:
2531: return 1;
2532: }
2533: ®ister_handler("sub", \&subscribe_handler, 0, 1, 0);
2534:
2535: #
1.379 albertel 2536: # Determine the latest version of a resource (it looks for the highest
2537: # past version and then returns that +1)
1.230 foxr 2538: #
2539: # Parameters:
2540: # $cmd - The command that got us here.
2541: # $tail - Tail of the command (remaining parameters).
1.379 albertel 2542: # (Should consist of an absolute path to a file)
1.230 foxr 2543: # $client - File descriptor connected to client.
2544: # Returns
2545: # 0 - Requested to exit, caller should shut down.
2546: # 1 - Continue processing.
2547: #
2548: sub current_version_handler {
2549: my ($cmd, $tail, $client) = @_;
2550:
2551: my $userinput= "$cmd:$tail";
2552:
2553: my $fname = $tail;
2554: &Reply( $client, ¤tversion($fname)."\n", $userinput);
2555: return 1;
2556:
2557: }
2558: ®ister_handler("currentversion", \¤t_version_handler, 0, 1, 0);
2559:
2560: # Make an entry in a user's activity log.
2561: #
2562: # Parameters:
2563: # $cmd - The command that got us here.
2564: # $tail - Tail of the command (remaining parameters).
2565: # $client - File descriptor connected to client.
2566: # Returns
2567: # 0 - Requested to exit, caller should shut down.
2568: # 1 - Continue processing.
2569: #
2570: sub activity_log_handler {
2571: my ($cmd, $tail, $client) = @_;
2572:
2573:
2574: my $userinput= "$cmd:$tail";
2575:
2576: my ($udom,$uname,$what)=split(/:/,$tail);
2577: chomp($what);
2578: my $proname=&propath($udom,$uname);
2579: my $now=time;
2580: my $hfh;
2581: if ($hfh=IO::File->new(">>$proname/activity.log")) {
2582: print $hfh "$now:$clientname:$what\n";
2583: &Reply( $client, "ok\n", $userinput);
2584: } else {
2585: &Failure($client, "error: ".($!+0)." IO::File->new Failed "
2586: ."while attempting log\n",
2587: $userinput);
2588: }
2589:
2590: return 1;
2591: }
1.263 albertel 2592: ®ister_handler("log", \&activity_log_handler, 0, 1, 0);
1.230 foxr 2593:
2594: #
2595: # Put a namespace entry in a user profile hash.
2596: # My druthers would be for this to be an encrypted interaction too.
2597: # anything that might be an inadvertent covert channel about either
2598: # user authentication or user personal information....
2599: #
2600: # Parameters:
2601: # $cmd - The command that got us here.
2602: # $tail - Tail of the command (remaining parameters).
2603: # $client - File descriptor connected to client.
2604: # Returns
2605: # 0 - Requested to exit, caller should shut down.
2606: # 1 - Continue processing.
2607: #
2608: sub put_user_profile_entry {
2609: my ($cmd, $tail, $client) = @_;
1.229 foxr 2610:
1.230 foxr 2611: my $userinput = "$cmd:$tail";
2612:
1.242 raeburn 2613: my ($udom,$uname,$namespace,$what) =split(/:/,$tail,4);
1.230 foxr 2614: if ($namespace ne 'roles') {
2615: chomp($what);
2616: my $hashref = &tie_user_hash($udom, $uname, $namespace,
2617: &GDBM_WRCREAT(),"P",$what);
2618: if($hashref) {
2619: my @pairs=split(/\&/,$what);
2620: foreach my $pair (@pairs) {
2621: my ($key,$value)=split(/=/,$pair);
2622: $hashref->{$key}=$value;
2623: }
1.311 albertel 2624: if (&untie_user_hash($hashref)) {
1.230 foxr 2625: &Reply( $client, "ok\n", $userinput);
2626: } else {
2627: &Failure($client, "error: ".($!+0)." untie(GDBM) failed ".
2628: "while attempting put\n",
2629: $userinput);
2630: }
2631: } else {
1.316 albertel 2632: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
1.230 foxr 2633: "while attempting put\n", $userinput);
2634: }
2635: } else {
2636: &Failure( $client, "refused\n", $userinput);
2637: }
2638:
2639: return 1;
2640: }
2641: ®ister_handler("put", \&put_user_profile_entry, 0, 1, 0);
2642:
1.283 albertel 2643: # Put a piece of new data in hash, returns error if entry already exists
2644: # Parameters:
2645: # $cmd - The command that got us here.
2646: # $tail - Tail of the command (remaining parameters).
2647: # $client - File descriptor connected to client.
2648: # Returns
2649: # 0 - Requested to exit, caller should shut down.
2650: # 1 - Continue processing.
2651: #
2652: sub newput_user_profile_entry {
2653: my ($cmd, $tail, $client) = @_;
2654:
2655: my $userinput = "$cmd:$tail";
2656:
2657: my ($udom,$uname,$namespace,$what) =split(/:/,$tail,4);
2658: if ($namespace eq 'roles') {
2659: &Failure( $client, "refused\n", $userinput);
2660: return 1;
2661: }
2662:
2663: chomp($what);
2664:
2665: my $hashref = &tie_user_hash($udom, $uname, $namespace,
2666: &GDBM_WRCREAT(),"N",$what);
2667: if(!$hashref) {
1.316 albertel 2668: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
1.283 albertel 2669: "while attempting put\n", $userinput);
2670: return 1;
2671: }
2672:
2673: my @pairs=split(/\&/,$what);
2674: foreach my $pair (@pairs) {
2675: my ($key,$value)=split(/=/,$pair);
2676: if (exists($hashref->{$key})) {
2677: &Failure($client, "key_exists: ".$key."\n",$userinput);
2678: return 1;
2679: }
2680: }
2681:
2682: foreach my $pair (@pairs) {
2683: my ($key,$value)=split(/=/,$pair);
2684: $hashref->{$key}=$value;
2685: }
2686:
1.311 albertel 2687: if (&untie_user_hash($hashref)) {
1.283 albertel 2688: &Reply( $client, "ok\n", $userinput);
2689: } else {
2690: &Failure($client, "error: ".($!+0)." untie(GDBM) failed ".
2691: "while attempting put\n",
2692: $userinput);
2693: }
2694: return 1;
2695: }
2696: ®ister_handler("newput", \&newput_user_profile_entry, 0, 1, 0);
2697:
1.230 foxr 2698: #
2699: # Increment a profile entry in the user history file.
2700: # The history contains keyword value pairs. In this case,
2701: # The value itself is a pair of numbers. The first, the current value
2702: # the second an increment that this function applies to the current
2703: # value.
2704: #
2705: # Parameters:
2706: # $cmd - The command that got us here.
2707: # $tail - Tail of the command (remaining parameters).
2708: # $client - File descriptor connected to client.
2709: # Returns
2710: # 0 - Requested to exit, caller should shut down.
2711: # 1 - Continue processing.
2712: #
2713: sub increment_user_value_handler {
2714: my ($cmd, $tail, $client) = @_;
2715:
2716: my $userinput = "$cmd:$tail";
2717:
2718: my ($udom,$uname,$namespace,$what) =split(/:/,$tail);
2719: if ($namespace ne 'roles') {
2720: chomp($what);
2721: my $hashref = &tie_user_hash($udom, $uname,
2722: $namespace, &GDBM_WRCREAT(),
2723: "P",$what);
2724: if ($hashref) {
2725: my @pairs=split(/\&/,$what);
2726: foreach my $pair (@pairs) {
2727: my ($key,$value)=split(/=/,$pair);
1.284 raeburn 2728: $value = &unescape($value);
1.230 foxr 2729: # We could check that we have a number...
2730: if (! defined($value) || $value eq '') {
2731: $value = 1;
2732: }
2733: $hashref->{$key}+=$value;
1.284 raeburn 2734: if ($namespace eq 'nohist_resourcetracker') {
2735: if ($hashref->{$key} < 0) {
2736: $hashref->{$key} = 0;
2737: }
2738: }
1.230 foxr 2739: }
1.311 albertel 2740: if (&untie_user_hash($hashref)) {
1.230 foxr 2741: &Reply( $client, "ok\n", $userinput);
2742: } else {
2743: &Failure($client, "error: ".($!+0)." untie(GDBM) failed ".
2744: "while attempting inc\n", $userinput);
2745: }
2746: } else {
2747: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
2748: "while attempting inc\n", $userinput);
2749: }
2750: } else {
2751: &Failure($client, "refused\n", $userinput);
2752: }
2753:
2754: return 1;
2755: }
2756: ®ister_handler("inc", \&increment_user_value_handler, 0, 1, 0);
2757:
2758: #
2759: # Put a new role for a user. Roles are LonCAPA's packaging of permissions.
2760: # Each 'role' a user has implies a set of permissions. Adding a new role
2761: # for a person grants the permissions packaged with that role
2762: # to that user when the role is selected.
2763: #
2764: # Parameters:
2765: # $cmd - The command string (rolesput).
2766: # $tail - The remainder of the request line. For rolesput this
2767: # consists of a colon separated list that contains:
2768: # The domain and user that is granting the role (logged).
2769: # The domain and user that is getting the role.
2770: # The roles being granted as a set of & separated pairs.
2771: # each pair a key value pair.
2772: # $client - File descriptor connected to the client.
2773: # Returns:
2774: # 0 - If the daemon should exit
2775: # 1 - To continue processing.
2776: #
2777: #
2778: sub roles_put_handler {
2779: my ($cmd, $tail, $client) = @_;
2780:
2781: my $userinput = "$cmd:$tail";
2782:
2783: my ( $exedom, $exeuser, $udom, $uname, $what) = split(/:/,$tail);
2784:
2785:
2786: my $namespace='roles';
2787: chomp($what);
2788: my $hashref = &tie_user_hash($udom, $uname, $namespace,
2789: &GDBM_WRCREAT(), "P",
2790: "$exedom:$exeuser:$what");
2791: #
2792: # Log the attempt to set a role. The {}'s here ensure that the file
2793: # handle is open for the minimal amount of time. Since the flush
2794: # is done on close this improves the chances the log will be an un-
2795: # corrupted ordered thing.
2796: if ($hashref) {
1.261 foxr 2797: my $pass_entry = &get_auth_type($udom, $uname);
2798: my ($auth_type,$pwd) = split(/:/, $pass_entry);
2799: $auth_type = $auth_type.":";
1.230 foxr 2800: my @pairs=split(/\&/,$what);
2801: foreach my $pair (@pairs) {
2802: my ($key,$value)=split(/=/,$pair);
2803: &manage_permissions($key, $udom, $uname,
1.260 foxr 2804: $auth_type);
1.230 foxr 2805: $hashref->{$key}=$value;
2806: }
1.311 albertel 2807: if (&untie_user_hash($hashref)) {
1.230 foxr 2808: &Reply($client, "ok\n", $userinput);
2809: } else {
2810: &Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ".
2811: "while attempting rolesput\n", $userinput);
2812: }
2813: } else {
2814: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
2815: "while attempting rolesput\n", $userinput);
2816: }
2817: return 1;
2818: }
2819: ®ister_handler("rolesput", \&roles_put_handler, 1,1,0); # Encoded client only.
2820:
2821: #
1.231 foxr 2822: # Deletes (removes) a role for a user. This is equivalent to removing
2823: # a permissions package associated with the role from the user's profile.
2824: #
2825: # Parameters:
2826: # $cmd - The command (rolesdel)
2827: # $tail - The remainder of the request line. This consists
2828: # of:
2829: # The domain and user requesting the change (logged)
2830: # The domain and user being changed.
2831: # The roles being revoked. These are shipped to us
2832: # as a bunch of & separated role name keywords.
2833: # $client - The file handle open on the client.
2834: # Returns:
2835: # 1 - Continue processing
2836: # 0 - Exit.
2837: #
2838: sub roles_delete_handler {
2839: my ($cmd, $tail, $client) = @_;
2840:
2841: my $userinput = "$cmd:$tail";
2842:
2843: my ($exedom,$exeuser,$udom,$uname,$what)=split(/:/,$tail);
2844: &Debug("cmd = ".$cmd." exedom= ".$exedom."user = ".$exeuser." udom=".$udom.
2845: "what = ".$what);
2846: my $namespace='roles';
2847: chomp($what);
2848: my $hashref = &tie_user_hash($udom, $uname, $namespace,
2849: &GDBM_WRCREAT(), "D",
2850: "$exedom:$exeuser:$what");
2851:
2852: if ($hashref) {
2853: my @rolekeys=split(/\&/,$what);
2854:
2855: foreach my $key (@rolekeys) {
2856: delete $hashref->{$key};
2857: }
1.315 albertel 2858: if (&untie_user_hash($hashref)) {
1.231 foxr 2859: &Reply($client, "ok\n", $userinput);
2860: } else {
2861: &Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ".
2862: "while attempting rolesdel\n", $userinput);
2863: }
2864: } else {
2865: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
2866: "while attempting rolesdel\n", $userinput);
2867: }
2868:
2869: return 1;
2870: }
2871: ®ister_handler("rolesdel", \&roles_delete_handler, 1,1, 0); # Encoded client only
2872:
2873: # Unencrypted get from a user's profile database. See
2874: # GetProfileEntryEncrypted for a version that does end-to-end encryption.
2875: # This function retrieves a keyed item from a specific named database in the
2876: # user's directory.
2877: #
2878: # Parameters:
2879: # $cmd - Command request keyword (get).
2880: # $tail - Tail of the command. This is a colon separated list
2881: # consisting of the domain and username that uniquely
2882: # identifies the profile,
2883: # The 'namespace' which selects the gdbm file to
2884: # do the lookup in,
2885: # & separated list of keys to lookup. Note that
2886: # the values are returned as an & separated list too.
2887: # $client - File descriptor open on the client.
2888: # Returns:
2889: # 1 - Continue processing.
2890: # 0 - Exit.
2891: #
2892: sub get_profile_entry {
2893: my ($cmd, $tail, $client) = @_;
2894:
2895: my $userinput= "$cmd:$tail";
2896:
2897: my ($udom,$uname,$namespace,$what) = split(/:/,$tail);
2898: chomp($what);
1.255 foxr 2899:
1.390 raeburn 2900:
1.255 foxr 2901: my $replystring = read_profile($udom, $uname, $namespace, $what);
2902: my ($first) = split(/:/,$replystring);
2903: if($first ne "error") {
1.387 albertel 2904: &Reply($client, \$replystring, $userinput);
1.231 foxr 2905: } else {
1.255 foxr 2906: &Failure($client, $replystring." while attempting get\n", $userinput);
1.231 foxr 2907: }
2908: return 1;
1.255 foxr 2909:
2910:
1.231 foxr 2911: }
2912: ®ister_handler("get", \&get_profile_entry, 0,1,0);
2913:
2914: #
2915: # Process the encrypted get request. Note that the request is sent
2916: # in clear, but the reply is encrypted. This is a small covert channel:
2917: # information about the sensitive keys is given to the snooper. Just not
2918: # information about the values of the sensitive key. Hmm if I wanted to
2919: # know these I'd snoop for the egets. Get the profile item names from them
2920: # and then issue a get for them since there's no enforcement of the
2921: # requirement of an encrypted get for particular profile items. If I
2922: # were re-doing this, I'd force the request to be encrypted as well as the
2923: # reply. I'd also just enforce encrypted transactions for all gets since
2924: # that would prevent any covert channel snooping.
2925: #
2926: # Parameters:
2927: # $cmd - Command keyword of request (eget).
2928: # $tail - Tail of the command. See GetProfileEntry
# for more information about this.
2929: # $client - File open on the client.
2930: # Returns:
2931: # 1 - Continue processing
2932: # 0 - server should exit.
2933: sub get_profile_entry_encrypted {
2934: my ($cmd, $tail, $client) = @_;
2935:
2936: my $userinput = "$cmd:$tail";
2937:
1.339 albertel 2938: my ($udom,$uname,$namespace,$what) = split(/:/,$tail);
1.231 foxr 2939: chomp($what);
1.255 foxr 2940: my $qresult = read_profile($udom, $uname, $namespace, $what);
2941: my ($first) = split(/:/, $qresult);
2942: if($first ne "error") {
2943:
2944: if ($cipher) {
2945: my $cmdlength=length($qresult);
2946: $qresult.=" ";
2947: my $encqresult='';
2948: for(my $encidx=0;$encidx<=$cmdlength;$encidx+=8) {
2949: $encqresult.= unpack("H16",
2950: $cipher->encrypt(substr($qresult,
2951: $encidx,
2952: 8)));
2953: }
2954: &Reply( $client, "enc:$cmdlength:$encqresult\n", $userinput);
2955: } else {
1.231 foxr 2956: &Failure( $client, "error:no_key\n", $userinput);
2957: }
2958: } else {
1.255 foxr 2959: &Failure($client, "$qresult while attempting eget\n", $userinput);
2960:
1.231 foxr 2961: }
2962:
2963: return 1;
2964: }
1.255 foxr 2965: ®ister_handler("eget", \&get_profile_entry_encrypted, 0, 1, 0);
1.263 albertel 2966:
1.231 foxr 2967: #
2968: # Deletes a key in a user profile database.
2969: #
2970: # Parameters:
2971: # $cmd - Command keyword (del).
2972: # $tail - Command tail. IN this case a colon
2973: # separated list containing:
2974: # The domain and user that identifies uniquely
2975: # the identity of the user.
2976: # The profile namespace (name of the profile
2977: # database file).
2978: # & separated list of keywords to delete.
2979: # $client - File open on client socket.
2980: # Returns:
2981: # 1 - Continue processing
2982: # 0 - Exit server.
2983: #
2984: #
2985: sub delete_profile_entry {
2986: my ($cmd, $tail, $client) = @_;
2987:
2988: my $userinput = "cmd:$tail";
2989:
2990: my ($udom,$uname,$namespace,$what) = split(/:/,$tail);
2991: chomp($what);
2992: my $hashref = &tie_user_hash($udom, $uname, $namespace,
2993: &GDBM_WRCREAT(),
2994: "D",$what);
2995: if ($hashref) {
2996: my @keys=split(/\&/,$what);
2997: foreach my $key (@keys) {
2998: delete($hashref->{$key});
2999: }
1.315 albertel 3000: if (&untie_user_hash($hashref)) {
1.231 foxr 3001: &Reply($client, "ok\n", $userinput);
3002: } else {
3003: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
3004: "while attempting del\n", $userinput);
3005: }
3006: } else {
3007: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
3008: "while attempting del\n", $userinput);
3009: }
3010: return 1;
3011: }
3012: ®ister_handler("del", \&delete_profile_entry, 0, 1, 0);
1.263 albertel 3013:
1.231 foxr 3014: #
3015: # List the set of keys that are defined in a profile database file.
3016: # A successful reply from this will contain an & separated list of
3017: # the keys.
3018: # Parameters:
3019: # $cmd - Command request (keys).
3020: # $tail - Remainder of the request, a colon separated
3021: # list containing domain/user that identifies the
3022: # user being queried, and the database namespace
3023: # (database filename essentially).
3024: # $client - File open on the client.
3025: # Returns:
3026: # 1 - Continue processing.
3027: # 0 - Exit the server.
3028: #
3029: sub get_profile_keys {
3030: my ($cmd, $tail, $client) = @_;
3031:
3032: my $userinput = "$cmd:$tail";
3033:
3034: my ($udom,$uname,$namespace)=split(/:/,$tail);
3035: my $qresult='';
3036: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3037: &GDBM_READER());
3038: if ($hashref) {
3039: foreach my $key (keys %$hashref) {
3040: $qresult.="$key&";
3041: }
1.315 albertel 3042: if (&untie_user_hash($hashref)) {
1.231 foxr 3043: $qresult=~s/\&$//;
1.387 albertel 3044: &Reply($client, \$qresult, $userinput);
1.231 foxr 3045: } else {
3046: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
3047: "while attempting keys\n", $userinput);
3048: }
3049: } else {
3050: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
3051: "while attempting keys\n", $userinput);
3052: }
3053:
3054: return 1;
3055: }
3056: ®ister_handler("keys", \&get_profile_keys, 0, 1, 0);
3057:
3058: #
3059: # Dump the contents of a user profile database.
3060: # Note that this constitutes a very large covert channel too since
3061: # the dump will return sensitive information that is not encrypted.
3062: # The naive security assumption is that the session negotiation ensures
3063: # our client is trusted and I don't believe that's assured at present.
3064: # Sure want badly to go to ssl or tls. Of course if my peer isn't really
3065: # a LonCAPA node they could have negotiated an encryption key too so >sigh<.
3066: #
3067: # Parameters:
3068: # $cmd - The command request keyword (currentdump).
3069: # $tail - Remainder of the request, consisting of a colon
3070: # separated list that has the domain/username and
3071: # the namespace to dump (database file).
3072: # $client - file open on the remote client.
3073: # Returns:
3074: # 1 - Continue processing.
3075: # 0 - Exit the server.
3076: #
3077: sub dump_profile_database {
3078: my ($cmd, $tail, $client) = @_;
3079:
3080: my $userinput = "$cmd:$tail";
3081:
3082: my ($udom,$uname,$namespace) = split(/:/,$tail);
3083: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3084: &GDBM_READER());
3085: if ($hashref) {
3086: # Structure of %data:
3087: # $data{$symb}->{$parameter}=$value;
3088: # $data{$symb}->{'v.'.$parameter}=$version;
3089: # since $parameter will be unescaped, we do not
3090: # have to worry about silly parameter names...
3091:
3092: my $qresult='';
3093: my %data = (); # A hash of anonymous hashes..
3094: while (my ($key,$value) = each(%$hashref)) {
3095: my ($v,$symb,$param) = split(/:/,$key);
3096: next if ($v eq 'version' || $symb eq 'keys');
3097: next if (exists($data{$symb}) &&
3098: exists($data{$symb}->{$param}) &&
3099: $data{$symb}->{'v.'.$param} > $v);
3100: $data{$symb}->{$param}=$value;
3101: $data{$symb}->{'v.'.$param}=$v;
3102: }
1.311 albertel 3103: if (&untie_user_hash($hashref)) {
1.231 foxr 3104: while (my ($symb,$param_hash) = each(%data)) {
3105: while(my ($param,$value) = each (%$param_hash)){
3106: next if ($param =~ /^v\./); # Ignore versions...
3107: #
3108: # Just dump the symb=value pairs separated by &
3109: #
3110: $qresult.=$symb.':'.$param.'='.$value.'&';
3111: }
3112: }
3113: chop($qresult);
1.387 albertel 3114: &Reply($client , \$qresult, $userinput);
1.231 foxr 3115: } else {
3116: &Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ".
3117: "while attempting currentdump\n", $userinput);
3118: }
3119: } else {
3120: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
3121: "while attempting currentdump\n", $userinput);
3122: }
3123:
3124: return 1;
3125: }
3126: ®ister_handler("currentdump", \&dump_profile_database, 0, 1, 0);
3127:
3128: #
3129: # Dump a profile database with an optional regular expression
3130: # to match against the keys. In this dump, no effort is made
3131: # to separate symb from version information. Presumably the
3132: # databases that are dumped by this command are of a different
3133: # structure. Need to look at this and improve the documentation of
3134: # both this and the currentdump handler.
3135: # Parameters:
3136: # $cmd - The command keyword.
3137: # $tail - All of the characters after the $cmd:
3138: # These are expected to be a colon
3139: # separated list containing:
3140: # domain/user - identifying the user.
3141: # namespace - identifying the database.
3142: # regexp - optional regular expression
3143: # that is matched against
3144: # database keywords to do
3145: # selective dumps.
3146: # $client - Channel open on the client.
3147: # Returns:
3148: # 1 - Continue processing.
3149: # Side effects:
3150: # response is written to $client.
3151: #
3152: sub dump_with_regexp {
3153: my ($cmd, $tail, $client) = @_;
3154:
3155:
3156: my $userinput = "$cmd:$tail";
3157:
1.450 raeburn 3158: my ($udom,$uname,$namespace,$regexp,$range,$extra)=split(/:/,$tail);
1.231 foxr 3159: if (defined($regexp)) {
3160: $regexp=&unescape($regexp);
3161: } else {
3162: $regexp='.';
3163: }
1.306 albertel 3164: my ($start,$end);
3165: if (defined($range)) {
3166: if ($range =~/^(\d+)\-(\d+)$/) {
3167: ($start,$end) = ($1,$2);
3168: } elsif ($range =~/^(\d+)$/) {
3169: ($start,$end) = (0,$1);
3170: } else {
3171: undef($range);
3172: }
3173: }
1.231 foxr 3174: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3175: &GDBM_READER());
1.456 raeburn 3176: my $skipcheck;
1.231 foxr 3177: if ($hashref) {
3178: my $qresult='';
1.306 albertel 3179: my $count=0;
1.450 raeburn 3180: if ($extra ne '') {
3181: $extra = &Apache::lonnet::thaw_unescape($extra);
1.456 raeburn 3182: $skipcheck = $extra->{'skipcheck'};
1.450 raeburn 3183: }
3184: my @ids = &Apache::lonnet::current_machine_ids();
1.453 raeburn 3185: my (%homecourses,$major,$minor,$now);
1.456 raeburn 3186: if (($namespace eq 'roles') && (!$skipcheck)) {
1.453 raeburn 3187: my $loncaparev = $clientversion;
3188: if ($loncaparev eq '') {
3189: $loncaparev = $Apache::lonnet::loncaparevs{$clientname};
3190: }
3191: if ($loncaparev =~ /^\'?(\d+)\.(\d+)\.[\w.\-]+\'?/) {
3192: $major = $1;
3193: $minor = $2;
3194: }
3195: $now = time;
3196: }
1.231 foxr 3197: while (my ($key,$value) = each(%$hashref)) {
1.432 raeburn 3198: if ($namespace eq 'roles') {
1.453 raeburn 3199: if ($key =~ m{^/($LONCAPA::match_domain)/($LONCAPA::match_courseid)(/?[^_]*)_(cc|co|in|ta|ep|ad|st|cr)$}) {
1.446 raeburn 3200: my $cdom = $1;
3201: my $cnum = $2;
1.456 raeburn 3202: unless ($skipcheck) {
1.457 raeburn 3203: my ($role,$end,$start) = split(/\_/,$value);
3204: if (!$end || $end > $now) {
3205: next unless (&releasereqd_check($cnum,$cdom,$key,$value,$major,
3206: $minor,\%homecourses,\@ids));
1.458 raeburn 3207: }
1.432 raeburn 3208: }
3209: }
3210: }
1.231 foxr 3211: if ($regexp eq '.') {
1.306 albertel 3212: $count++;
3213: if (defined($range) && $count >= $end) { last; }
3214: if (defined($range) && $count < $start) { next; }
1.231 foxr 3215: $qresult.=$key.'='.$value.'&';
3216: } else {
3217: my $unescapeKey = &unescape($key);
3218: if (eval('$unescapeKey=~/$regexp/')) {
1.306 albertel 3219: $count++;
3220: if (defined($range) && $count >= $end) { last; }
3221: if (defined($range) && $count < $start) { next; }
1.231 foxr 3222: $qresult.="$key=$value&";
3223: }
3224: }
3225: }
1.311 albertel 3226: if (&untie_user_hash($hashref)) {
1.456 raeburn 3227: if (($namespace eq 'roles') && (!$skipcheck)) {
1.453 raeburn 3228: if (keys(%homecourses) > 0) {
3229: $qresult .= &check_homecourses(\%homecourses,$udom,$regexp,$count,
3230: $range,$start,$end,$major,$minor);
3231: }
3232: }
1.231 foxr 3233: chop($qresult);
1.387 albertel 3234: &Reply($client, \$qresult, $userinput);
1.231 foxr 3235: } else {
3236: &Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ".
3237: "while attempting dump\n", $userinput);
3238: }
3239: } else {
3240: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
3241: "while attempting dump\n", $userinput);
3242: }
3243:
3244: return 1;
3245: }
3246: ®ister_handler("dump", \&dump_with_regexp, 0, 1, 0);
3247:
3248: # Store a set of key=value pairs associated with a versioned name.
3249: #
3250: # Parameters:
3251: # $cmd - Request command keyword.
3252: # $tail - Tail of the request. This is a colon
3253: # separated list containing:
3254: # domain/user - User and authentication domain.
3255: # namespace - Name of the database being modified
3256: # rid - Resource keyword to modify.
3257: # what - new value associated with rid.
3258: #
3259: # $client - Socket open on the client.
3260: #
3261: #
3262: # Returns:
3263: # 1 (keep on processing).
3264: # Side-Effects:
3265: # Writes to the client
3266: sub store_handler {
3267: my ($cmd, $tail, $client) = @_;
3268:
3269: my $userinput = "$cmd:$tail";
3270:
3271: my ($udom,$uname,$namespace,$rid,$what) =split(/:/,$tail);
3272: if ($namespace ne 'roles') {
3273:
3274: chomp($what);
3275: my @pairs=split(/\&/,$what);
3276: my $hashref = &tie_user_hash($udom, $uname, $namespace,
1.268 albertel 3277: &GDBM_WRCREAT(), "S",
1.231 foxr 3278: "$rid:$what");
3279: if ($hashref) {
3280: my $now = time;
3281: my @previouskeys=split(/&/,$hashref->{"keys:$rid"});
3282: my $key;
3283: $hashref->{"version:$rid"}++;
3284: my $version=$hashref->{"version:$rid"};
3285: my $allkeys='';
3286: foreach my $pair (@pairs) {
3287: my ($key,$value)=split(/=/,$pair);
3288: $allkeys.=$key.':';
3289: $hashref->{"$version:$rid:$key"}=$value;
3290: }
3291: $hashref->{"$version:$rid:timestamp"}=$now;
3292: $allkeys.='timestamp';
3293: $hashref->{"$version:keys:$rid"}=$allkeys;
1.311 albertel 3294: if (&untie_user_hash($hashref)) {
1.231 foxr 3295: &Reply($client, "ok\n", $userinput);
3296: } else {
3297: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
3298: "while attempting store\n", $userinput);
3299: }
3300: } else {
3301: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
3302: "while attempting store\n", $userinput);
3303: }
3304: } else {
3305: &Failure($client, "refused\n", $userinput);
3306: }
3307:
3308: return 1;
3309: }
3310: ®ister_handler("store", \&store_handler, 0, 1, 0);
1.263 albertel 3311:
1.323 albertel 3312: # Modify a set of key=value pairs associated with a versioned name.
3313: #
3314: # Parameters:
3315: # $cmd - Request command keyword.
3316: # $tail - Tail of the request. This is a colon
3317: # separated list containing:
3318: # domain/user - User and authentication domain.
3319: # namespace - Name of the database being modified
3320: # rid - Resource keyword to modify.
3321: # v - Version item to modify
3322: # what - new value associated with rid.
3323: #
3324: # $client - Socket open on the client.
3325: #
3326: #
3327: # Returns:
3328: # 1 (keep on processing).
3329: # Side-Effects:
3330: # Writes to the client
3331: sub putstore_handler {
3332: my ($cmd, $tail, $client) = @_;
3333:
3334: my $userinput = "$cmd:$tail";
3335:
3336: my ($udom,$uname,$namespace,$rid,$v,$what) =split(/:/,$tail);
3337: if ($namespace ne 'roles') {
3338:
3339: chomp($what);
3340: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3341: &GDBM_WRCREAT(), "M",
3342: "$rid:$v:$what");
3343: if ($hashref) {
3344: my $now = time;
3345: my %data = &hash_extract($what);
3346: my @allkeys;
3347: while (my($key,$value) = each(%data)) {
3348: push(@allkeys,$key);
3349: $hashref->{"$v:$rid:$key"} = $value;
3350: }
3351: my $allkeys = join(':',@allkeys);
3352: $hashref->{"$v:keys:$rid"}=$allkeys;
3353:
3354: if (&untie_user_hash($hashref)) {
3355: &Reply($client, "ok\n", $userinput);
3356: } else {
3357: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
3358: "while attempting store\n", $userinput);
3359: }
3360: } else {
3361: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
3362: "while attempting store\n", $userinput);
3363: }
3364: } else {
3365: &Failure($client, "refused\n", $userinput);
3366: }
3367:
3368: return 1;
3369: }
3370: ®ister_handler("putstore", \&putstore_handler, 0, 1, 0);
3371:
3372: sub hash_extract {
3373: my ($str)=@_;
3374: my %hash;
3375: foreach my $pair (split(/\&/,$str)) {
3376: my ($key,$value)=split(/=/,$pair);
3377: $hash{$key}=$value;
3378: }
3379: return (%hash);
3380: }
3381: sub hash_to_str {
3382: my ($hash_ref)=@_;
3383: my $str;
3384: foreach my $key (keys(%$hash_ref)) {
3385: $str.=$key.'='.$hash_ref->{$key}.'&';
3386: }
3387: $str=~s/\&$//;
3388: return $str;
3389: }
3390:
1.231 foxr 3391: #
3392: # Dump out all versions of a resource that has key=value pairs associated
3393: # with it for each version. These resources are built up via the store
3394: # command.
3395: #
3396: # Parameters:
3397: # $cmd - Command keyword.
3398: # $tail - Remainder of the request which consists of:
3399: # domain/user - User and auth. domain.
3400: # namespace - name of resource database.
3401: # rid - Resource id.
3402: # $client - socket open on the client.
3403: #
3404: # Returns:
3405: # 1 indicating the caller should not yet exit.
3406: # Side-effects:
3407: # Writes a reply to the client.
3408: # The reply is a string of the following shape:
3409: # version=current&version:keys=k1:k2...&1:k1=v1&1:k2=v2...
3410: # Where the 1 above represents version 1.
3411: # this continues for all pairs of keys in all versions.
3412: #
3413: #
3414: #
3415: #
3416: sub restore_handler {
3417: my ($cmd, $tail, $client) = @_;
3418:
3419: my $userinput = "$cmd:$tail"; # Only used for logging purposes.
1.351 banghart 3420: my ($udom,$uname,$namespace,$rid) = split(/:/,$tail);
1.352 albertel 3421: $namespace=~s/\//\_/g;
1.350 albertel 3422: $namespace = &LONCAPA::clean_username($namespace);
1.349 albertel 3423:
1.231 foxr 3424: chomp($rid);
3425: my $qresult='';
1.309 albertel 3426: my $hashref = &tie_user_hash($udom, $uname, $namespace, &GDBM_READER());
3427: if ($hashref) {
3428: my $version=$hashref->{"version:$rid"};
1.231 foxr 3429: $qresult.="version=$version&";
3430: my $scope;
3431: for ($scope=1;$scope<=$version;$scope++) {
1.309 albertel 3432: my $vkeys=$hashref->{"$scope:keys:$rid"};
1.231 foxr 3433: my @keys=split(/:/,$vkeys);
3434: my $key;
3435: $qresult.="$scope:keys=$vkeys&";
3436: foreach $key (@keys) {
1.309 albertel 3437: $qresult.="$scope:$key=".$hashref->{"$scope:$rid:$key"}."&";
1.231 foxr 3438: }
3439: }
1.311 albertel 3440: if (&untie_user_hash($hashref)) {
1.231 foxr 3441: $qresult=~s/\&$//;
1.387 albertel 3442: &Reply( $client, \$qresult, $userinput);
1.231 foxr 3443: } else {
3444: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
3445: "while attempting restore\n", $userinput);
3446: }
3447: } else {
3448: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
3449: "while attempting restore\n", $userinput);
3450: }
3451:
3452: return 1;
3453:
3454:
3455: }
3456: ®ister_handler("restore", \&restore_handler, 0,1,0);
1.234 foxr 3457:
3458: #
1.324 raeburn 3459: # Add a chat message to a synchronous discussion board.
1.234 foxr 3460: #
3461: # Parameters:
3462: # $cmd - Request keyword.
3463: # $tail - Tail of the command. A colon separated list
3464: # containing:
3465: # cdom - Domain on which the chat board lives
1.324 raeburn 3466: # cnum - Course containing the chat board.
3467: # newpost - Body of the posting.
3468: # group - Optional group, if chat board is only
3469: # accessible in a group within the course
1.234 foxr 3470: # $client - Socket open on the client.
3471: # Returns:
3472: # 1 - Indicating caller should keep on processing.
3473: #
3474: # Side-effects:
3475: # writes a reply to the client.
3476: #
3477: #
3478: sub send_chat_handler {
3479: my ($cmd, $tail, $client) = @_;
3480:
3481:
3482: my $userinput = "$cmd:$tail";
3483:
1.324 raeburn 3484: my ($cdom,$cnum,$newpost,$group)=split(/\:/,$tail);
3485: &chat_add($cdom,$cnum,$newpost,$group);
1.234 foxr 3486: &Reply($client, "ok\n", $userinput);
3487:
3488: return 1;
3489: }
3490: ®ister_handler("chatsend", \&send_chat_handler, 0, 1, 0);
1.263 albertel 3491:
1.234 foxr 3492: #
1.324 raeburn 3493: # Retrieve the set of chat messages from a discussion board.
1.234 foxr 3494: #
3495: # Parameters:
3496: # $cmd - Command keyword that initiated the request.
3497: # $tail - Remainder of the request after the command
3498: # keyword. In this case a colon separated list of
3499: # chat domain - Which discussion board.
3500: # chat id - Discussion thread(?)
3501: # domain/user - Authentication domain and username
3502: # of the requesting person.
1.324 raeburn 3503: # group - Optional course group containing
3504: # the board.
1.234 foxr 3505: # $client - Socket open on the client program.
3506: # Returns:
3507: # 1 - continue processing
3508: # Side effects:
3509: # Response is written to the client.
3510: #
3511: sub retrieve_chat_handler {
3512: my ($cmd, $tail, $client) = @_;
3513:
3514:
3515: my $userinput = "$cmd:$tail";
3516:
1.324 raeburn 3517: my ($cdom,$cnum,$udom,$uname,$group)=split(/\:/,$tail);
1.234 foxr 3518: my $reply='';
1.324 raeburn 3519: foreach (&get_chat($cdom,$cnum,$udom,$uname,$group)) {
1.234 foxr 3520: $reply.=&escape($_).':';
3521: }
3522: $reply=~s/\:$//;
1.387 albertel 3523: &Reply($client, \$reply, $userinput);
1.234 foxr 3524:
3525:
3526: return 1;
3527: }
3528: ®ister_handler("chatretr", \&retrieve_chat_handler, 0, 1, 0);
3529:
3530: #
3531: # Initiate a query of an sql database. SQL query repsonses get put in
3532: # a file for later retrieval. This prevents sql query results from
3533: # bottlenecking the system. Note that with loncnew, perhaps this is
3534: # less of an issue since multiple outstanding requests can be concurrently
3535: # serviced.
3536: #
3537: # Parameters:
3538: # $cmd - COmmand keyword that initiated the request.
3539: # $tail - Remainder of the command after the keyword.
3540: # For this function, this consists of a query and
3541: # 3 arguments that are self-documentingly labelled
3542: # in the original arg1, arg2, arg3.
3543: # $client - Socket open on the client.
3544: # Return:
3545: # 1 - Indicating processing should continue.
3546: # Side-effects:
3547: # a reply is written to $client.
3548: #
3549: sub send_query_handler {
3550: my ($cmd, $tail, $client) = @_;
3551:
3552:
3553: my $userinput = "$cmd:$tail";
3554:
3555: my ($query,$arg1,$arg2,$arg3)=split(/\:/,$tail);
3556: $query=~s/\n*$//g;
3557: &Reply($client, "". &sql_reply("$clientname\&$query".
3558: "\&$arg1"."\&$arg2"."\&$arg3")."\n",
3559: $userinput);
3560:
3561: return 1;
3562: }
3563: ®ister_handler("querysend", \&send_query_handler, 0, 1, 0);
3564:
3565: #
3566: # Add a reply to an sql query. SQL queries are done asyncrhonously.
3567: # The query is submitted via a "querysend" transaction.
3568: # There it is passed on to the lonsql daemon, queued and issued to
3569: # mysql.
3570: # This transaction is invoked when the sql transaction is complete
3571: # it stores the query results in flie and indicates query completion.
3572: # presumably local software then fetches this response... I'm guessing
3573: # the sequence is: lonc does a querysend, we ask lonsql to do it.
3574: # lonsql on completion of the query interacts with the lond of our
3575: # client to do a query reply storing two files:
3576: # - id - The results of the query.
3577: # - id.end - Indicating the transaction completed.
3578: # NOTE: id is a unique id assigned to the query and querysend time.
3579: # Parameters:
3580: # $cmd - Command keyword that initiated this request.
3581: # $tail - Remainder of the tail. In this case that's a colon
3582: # separated list containing the query Id and the
3583: # results of the query.
3584: # $client - Socket open on the client.
3585: # Return:
3586: # 1 - Indicating that we should continue processing.
3587: # Side effects:
3588: # ok written to the client.
3589: #
3590: sub reply_query_handler {
3591: my ($cmd, $tail, $client) = @_;
3592:
3593:
3594: my $userinput = "$cmd:$tail";
3595:
1.339 albertel 3596: my ($id,$reply)=split(/:/,$tail);
1.234 foxr 3597: my $store;
3598: my $execdir=$perlvar{'lonDaemons'};
3599: if ($store=IO::File->new(">$execdir/tmp/$id")) {
3600: $reply=~s/\&/\n/g;
3601: print $store $reply;
3602: close $store;
3603: my $store2=IO::File->new(">$execdir/tmp/$id.end");
3604: print $store2 "done\n";
3605: close $store2;
3606: &Reply($client, "ok\n", $userinput);
3607: } else {
3608: &Failure($client, "error: ".($!+0)
3609: ." IO::File->new Failed ".
3610: "while attempting queryreply\n", $userinput);
3611: }
3612:
3613:
3614: return 1;
3615: }
3616: ®ister_handler("queryreply", \&reply_query_handler, 0, 1, 0);
3617:
3618: #
3619: # Process the courseidput request. Not quite sure what this means
3620: # at the system level sense. It appears a gdbm file in the
3621: # /home/httpd/lonUsers/$domain/nohist_courseids is tied and
3622: # a set of entries made in that database.
3623: #
3624: # Parameters:
3625: # $cmd - The command keyword that initiated this request.
3626: # $tail - Tail of the command. In this case consists of a colon
3627: # separated list contaning the domain to apply this to and
3628: # an ampersand separated list of keyword=value pairs.
1.272 raeburn 3629: # Each value is a colon separated list that includes:
3630: # description, institutional code and course owner.
3631: # For backward compatibility with versions included
3632: # in LON-CAPA 1.1.X (and earlier) and 1.2.X, institutional
3633: # code and/or course owner are preserved from the existing
3634: # record when writing a new record in response to 1.1 or
3635: # 1.2 implementations of lonnet::flushcourselogs().
3636: #
1.234 foxr 3637: # $client - Socket open on the client.
3638: # Returns:
3639: # 1 - indicating that processing should continue
3640: #
3641: # Side effects:
3642: # reply is written to the client.
3643: #
3644: sub put_course_id_handler {
3645: my ($cmd, $tail, $client) = @_;
3646:
3647:
3648: my $userinput = "$cmd:$tail";
3649:
1.266 raeburn 3650: my ($udom, $what) = split(/:/, $tail,2);
1.234 foxr 3651: chomp($what);
3652: my $now=time;
3653: my @pairs=split(/\&/,$what);
3654:
3655: my $hashref = &tie_domain_hash($udom, "nohist_courseids", &GDBM_WRCREAT());
3656: if ($hashref) {
3657: foreach my $pair (@pairs) {
1.271 raeburn 3658: my ($key,$courseinfo) = split(/=/,$pair,2);
3659: $courseinfo =~ s/=/:/g;
1.384 raeburn 3660: if (defined($hashref->{$key})) {
3661: my $value = &Apache::lonnet::thaw_unescape($hashref->{$key});
3662: if (ref($value) eq 'HASH') {
3663: my @items = ('description','inst_code','owner','type');
3664: my @new_items = split(/:/,$courseinfo,-1);
3665: my %storehash;
3666: for (my $i=0; $i<@new_items; $i++) {
1.391 raeburn 3667: $storehash{$items[$i]} = &unescape($new_items[$i]);
1.384 raeburn 3668: }
3669: $hashref->{$key} =
3670: &Apache::lonnet::freeze_escape(\%storehash);
3671: my $unesc_key = &unescape($key);
3672: $hashref->{&escape('lasttime:'.$unesc_key)} = $now;
3673: next;
1.383 raeburn 3674: }
1.384 raeburn 3675: }
3676: my @current_items = split(/:/,$hashref->{$key},-1);
3677: shift(@current_items); # remove description
3678: pop(@current_items); # remove last access
3679: my $numcurrent = scalar(@current_items);
3680: if ($numcurrent > 3) {
3681: $numcurrent = 3;
3682: }
3683: my @new_items = split(/:/,$courseinfo,-1);
3684: my $numnew = scalar(@new_items);
3685: if ($numcurrent > 0) {
3686: if ($numnew <= $numcurrent) { # flushcourselogs() from pre 2.2
3687: for (my $j=$numcurrent-$numnew; $j>=0; $j--) {
3688: $courseinfo .= ':'.$current_items[$numcurrent-$j-1];
1.333 raeburn 3689: }
1.272 raeburn 3690: }
3691: }
1.384 raeburn 3692: $hashref->{$key}=$courseinfo.':'.$now;
1.234 foxr 3693: }
1.311 albertel 3694: if (&untie_domain_hash($hashref)) {
1.253 foxr 3695: &Reply( $client, "ok\n", $userinput);
1.234 foxr 3696: } else {
1.253 foxr 3697: &Failure($client, "error: ".($!+0)
1.234 foxr 3698: ." untie(GDBM) Failed ".
3699: "while attempting courseidput\n", $userinput);
3700: }
3701: } else {
1.253 foxr 3702: &Failure($client, "error: ".($!+0)
1.234 foxr 3703: ." tie(GDBM) Failed ".
3704: "while attempting courseidput\n", $userinput);
3705: }
3706:
3707: return 1;
3708: }
3709: ®ister_handler("courseidput", \&put_course_id_handler, 0, 1, 0);
3710:
1.383 raeburn 3711: sub put_course_id_hash_handler {
3712: my ($cmd, $tail, $client) = @_;
3713: my $userinput = "$cmd:$tail";
1.384 raeburn 3714: my ($udom,$mode,$what) = split(/:/, $tail,3);
1.383 raeburn 3715: chomp($what);
3716: my $now=time;
3717: my @pairs=split(/\&/,$what);
1.384 raeburn 3718: my $hashref = &tie_domain_hash($udom, "nohist_courseids", &GDBM_WRCREAT());
1.383 raeburn 3719: if ($hashref) {
3720: foreach my $pair (@pairs) {
3721: my ($key,$value)=split(/=/,$pair);
1.384 raeburn 3722: my $unesc_key = &unescape($key);
3723: if ($mode ne 'timeonly') {
3724: if (!defined($hashref->{&escape('lasttime:'.$unesc_key)})) {
3725: my $curritems = &Apache::lonnet::thaw_unescape($key);
3726: if (ref($curritems) ne 'HASH') {
3727: my @current_items = split(/:/,$hashref->{$key},-1);
3728: my $lasttime = pop(@current_items);
3729: $hashref->{&escape('lasttime:'.$unesc_key)} = $lasttime;
3730: } else {
3731: $hashref->{&escape('lasttime:'.$unesc_key)} = '';
3732: }
3733: }
3734: $hashref->{$key} = $value;
3735: }
3736: if ($mode ne 'notime') {
3737: $hashref->{&escape('lasttime:'.$unesc_key)} = $now;
3738: }
1.383 raeburn 3739: }
3740: if (&untie_domain_hash($hashref)) {
3741: &Reply($client, "ok\n", $userinput);
3742: } else {
3743: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
3744: "while attempting courseidputhash\n", $userinput);
3745: }
3746: } else {
3747: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
3748: "while attempting courseidputhash\n", $userinput);
3749: }
3750: return 1;
3751: }
3752: ®ister_handler("courseidputhash", \&put_course_id_hash_handler, 0, 1, 0);
3753:
1.234 foxr 3754: # Retrieves the value of a course id resource keyword pattern
3755: # defined since a starting date. Both the starting date and the
3756: # keyword pattern are optional. If the starting date is not supplied it
3757: # is treated as the beginning of time. If the pattern is not found,
3758: # it is treatred as "." matching everything.
3759: #
3760: # Parameters:
3761: # $cmd - Command keyword that resulted in us being dispatched.
3762: # $tail - The remainder of the command that, in this case, consists
3763: # of a colon separated list of:
3764: # domain - The domain in which the course database is
3765: # defined.
3766: # since - Optional parameter describing the minimum
3767: # time of definition(?) of the resources that
3768: # will match the dump.
3769: # description - regular expression that is used to filter
3770: # the dump. Only keywords matching this regexp
3771: # will be used.
1.272 raeburn 3772: # institutional code - optional supplied code to filter
3773: # the dump. Only courses with an institutional code
3774: # that match the supplied code will be returned.
1.336 raeburn 3775: # owner - optional supplied username and domain of owner to
3776: # filter the dump. Only courses for which the course
3777: # owner matches the supplied username and/or domain
3778: # will be returned. Pre-2.2.0 legacy entries from
3779: # nohist_courseiddump will only contain usernames.
1.384 raeburn 3780: # type - optional parameter for selection
1.418 raeburn 3781: # regexp_ok - if 1 or -1 allow the supplied institutional code
3782: # filter to behave as a regular expression:
3783: # 1 will not exclude the course if the instcode matches the RE
3784: # -1 will exclude the course if the instcode matches the RE
1.384 raeburn 3785: # rtn_as_hash - whether to return the information available for
3786: # each matched item as a frozen hash of all
3787: # key, value pairs in the item's hash, or as a
3788: # colon-separated list of (in order) description,
3789: # institutional code, and course owner.
1.404 raeburn 3790: # selfenrollonly - filter by courses allowing self-enrollment
3791: # now or in the future (selfenrollonly = 1).
3792: # catfilter - filter by course category, assigned to a course
3793: # using manually defined categories (i.e., not
1.407 raeburn 3794: # self-cataloging based on on institutional code).
1.404 raeburn 3795: # showhidden - include course in results even if course
1.407 raeburn 3796: # was set to be excluded from course catalog (DC only).
1.404 raeburn 3797: # caller - if set to 'coursecatalog', courses set to be hidden
3798: # from course catalog will be excluded from results (unless
3799: # overridden by "showhidden".
1.427 raeburn 3800: # cloner - escaped username:domain of course cloner (if picking course to
1.419 raeburn 3801: # clone).
3802: # cc_clone_list - escaped comma separated list of courses for which
3803: # course cloner has active CC role (and so can clone
3804: # automatically).
1.427 raeburn 3805: # cloneonly - filter by courses for which cloner has rights to clone.
3806: # createdbefore - include courses for which creation date preceeded this date.
3807: # createdafter - include courses for which creation date followed this date.
3808: # creationcontext - include courses created in specified context
1.404 raeburn 3809: #
1.445 raeburn 3810: # domcloner - flag to indicate if user can create CCs in course's domain.
3811: # If so, ability to clone course is automatic.
3812: #
1.234 foxr 3813: # $client - The socket open on the client.
3814: # Returns:
3815: # 1 - Continue processing.
3816: # Side Effects:
3817: # a reply is written to $client.
3818: sub dump_course_id_handler {
3819: my ($cmd, $tail, $client) = @_;
3820: my $userinput = "$cmd:$tail";
3821:
1.333 raeburn 3822: my ($udom,$since,$description,$instcodefilter,$ownerfilter,$coursefilter,
1.404 raeburn 3823: $typefilter,$regexp_ok,$rtn_as_hash,$selfenrollonly,$catfilter,$showhidden,
1.427 raeburn 3824: $caller,$cloner,$cc_clone_list,$cloneonly,$createdbefore,$createdafter,
1.445 raeburn 3825: $creationcontext,$domcloner) =split(/:/,$tail);
1.397 raeburn 3826: my $now = time;
1.419 raeburn 3827: my ($cloneruname,$clonerudom,%cc_clone);
1.234 foxr 3828: if (defined($description)) {
3829: $description=&unescape($description);
3830: } else {
3831: $description='.';
3832: }
1.266 raeburn 3833: if (defined($instcodefilter)) {
3834: $instcodefilter=&unescape($instcodefilter);
3835: } else {
3836: $instcodefilter='.';
3837: }
1.336 raeburn 3838: my ($ownerunamefilter,$ownerdomfilter);
1.266 raeburn 3839: if (defined($ownerfilter)) {
3840: $ownerfilter=&unescape($ownerfilter);
1.336 raeburn 3841: if ($ownerfilter ne '.' && defined($ownerfilter)) {
3842: if ($ownerfilter =~ /^([^:]*):([^:]*)$/) {
3843: $ownerunamefilter = $1;
3844: $ownerdomfilter = $2;
3845: } else {
3846: $ownerunamefilter = $ownerfilter;
3847: $ownerdomfilter = '';
3848: }
3849: }
1.266 raeburn 3850: } else {
3851: $ownerfilter='.';
3852: }
1.336 raeburn 3853:
1.282 raeburn 3854: if (defined($coursefilter)) {
3855: $coursefilter=&unescape($coursefilter);
3856: } else {
3857: $coursefilter='.';
3858: }
1.333 raeburn 3859: if (defined($typefilter)) {
3860: $typefilter=&unescape($typefilter);
3861: } else {
3862: $typefilter='.';
3863: }
1.344 raeburn 3864: if (defined($regexp_ok)) {
3865: $regexp_ok=&unescape($regexp_ok);
3866: }
1.401 raeburn 3867: if (defined($catfilter)) {
3868: $catfilter=&unescape($catfilter);
3869: }
1.419 raeburn 3870: if (defined($cloner)) {
3871: $cloner = &unescape($cloner);
3872: ($cloneruname,$clonerudom) = ($cloner =~ /^($LONCAPA::match_username):($LONCAPA::match_domain)$/);
3873: }
3874: if (defined($cc_clone_list)) {
3875: $cc_clone_list = &unescape($cc_clone_list);
3876: my @cc_cloners = split('&',$cc_clone_list);
3877: foreach my $cid (@cc_cloners) {
3878: my ($clonedom,$clonenum) = split(':',$cid);
3879: next if ($clonedom ne $udom);
3880: $cc_clone{$clonedom.'_'.$clonenum} = 1;
3881: }
3882: }
1.431 raeburn 3883: if ($createdbefore ne '') {
1.427 raeburn 3884: $createdbefore = &unescape($createdbefore);
3885: } else {
3886: $createdbefore = 0;
3887: }
1.431 raeburn 3888: if ($createdafter ne '') {
1.427 raeburn 3889: $createdafter = &unescape($createdafter);
3890: } else {
3891: $createdafter = 0;
3892: }
1.431 raeburn 3893: if ($creationcontext ne '') {
1.427 raeburn 3894: $creationcontext = &unescape($creationcontext);
3895: } else {
3896: $creationcontext = '.';
3897: }
1.384 raeburn 3898: my $unpack = 1;
3899: if ($description eq '.' && $instcodefilter eq '.' && $coursefilter eq '.' &&
3900: $typefilter eq '.') {
3901: $unpack = 0;
3902: }
3903: if (!defined($since)) { $since=0; }
1.234 foxr 3904: my $qresult='';
3905: my $hashref = &tie_domain_hash($udom, "nohist_courseids", &GDBM_WRCREAT());
3906: if ($hashref) {
1.384 raeburn 3907: while (my ($key,$value) = each(%$hashref)) {
1.397 raeburn 3908: my ($unesc_key,$lasttime_key,$lasttime,$is_hash,%val,
1.427 raeburn 3909: %unesc_val,$selfenroll_end,$selfenroll_types,$created,
3910: $context);
1.384 raeburn 3911: $unesc_key = &unescape($key);
3912: if ($unesc_key =~ /^lasttime:/) {
3913: next;
3914: } else {
3915: $lasttime_key = &escape('lasttime:'.$unesc_key);
3916: }
3917: if ($hashref->{$lasttime_key} ne '') {
3918: $lasttime = $hashref->{$lasttime_key};
3919: next if ($lasttime<$since);
3920: }
1.419 raeburn 3921: my ($canclone,$valchange);
1.384 raeburn 3922: my $items = &Apache::lonnet::thaw_unescape($value);
3923: if (ref($items) eq 'HASH') {
1.429 raeburn 3924: if ($hashref->{$lasttime_key} eq '') {
1.430 raeburn 3925: next if ($since > 1);
1.429 raeburn 3926: }
1.384 raeburn 3927: $is_hash = 1;
1.445 raeburn 3928: if ($domcloner) {
3929: $canclone = 1;
3930: } elsif (defined($clonerudom)) {
1.419 raeburn 3931: if ($items->{'cloners'}) {
3932: my @cloneable = split(',',$items->{'cloners'});
3933: if (@cloneable) {
3934: if (grep(/^\*$/,@cloneable)) {
3935: $canclone = 1;
3936: } elsif (grep(/^\*:\Q$clonerudom\E$/,@cloneable)) {
3937: $canclone = 1;
3938: } elsif (grep(/^\Q$cloneruname\E:\Q$clonerudom\E$/,@cloneable)) {
3939: $canclone = 1;
3940: }
3941: }
3942: unless ($canclone) {
3943: if ($cloneruname ne '' && $clonerudom ne '') {
3944: if ($cc_clone{$unesc_key}) {
3945: $canclone = 1;
3946: $items->{'cloners'} .= ','.$cloneruname.':'.
3947: $clonerudom;
3948: $valchange = 1;
3949: }
3950: }
3951: }
3952: } elsif (defined($cloneruname)) {
3953: if ($cc_clone{$unesc_key}) {
3954: $canclone = 1;
3955: $items->{'cloners'} = $cloneruname.':'.$clonerudom;
3956: $valchange = 1;
3957: }
1.437 raeburn 3958: unless ($canclone) {
3959: if ($items->{'owner'} =~ /:/) {
3960: if ($items->{'owner'} eq $cloner) {
3961: $canclone = 1;
3962: }
1.444 raeburn 3963: } elsif ($cloner eq $items->{'owner'}.':'.$udom) {
1.437 raeburn 3964: $canclone = 1;
3965: }
3966: if ($canclone) {
3967: $items->{'cloners'} = $cloneruname.':'.$clonerudom;
3968: $valchange = 1;
3969: }
3970: }
1.419 raeburn 3971: }
3972: }
1.384 raeburn 3973: if ($unpack || !$rtn_as_hash) {
3974: $unesc_val{'descr'} = $items->{'description'};
3975: $unesc_val{'inst_code'} = $items->{'inst_code'};
3976: $unesc_val{'owner'} = $items->{'owner'};
3977: $unesc_val{'type'} = $items->{'type'};
1.419 raeburn 3978: $unesc_val{'cloners'} = $items->{'cloners'};
1.427 raeburn 3979: $unesc_val{'created'} = $items->{'created'};
3980: $unesc_val{'context'} = $items->{'context'};
1.404 raeburn 3981: }
3982: $selfenroll_types = $items->{'selfenroll_types'};
3983: $selfenroll_end = $items->{'selfenroll_end_date'};
1.427 raeburn 3984: $created = $items->{'created'};
3985: $context = $items->{'context'};
1.404 raeburn 3986: if ($selfenrollonly) {
3987: next if (!$selfenroll_types);
3988: if (($selfenroll_end > 0) && ($selfenroll_end <= $now)) {
3989: next;
1.397 raeburn 3990: }
1.404 raeburn 3991: }
1.427 raeburn 3992: if ($creationcontext ne '.') {
3993: next if (($context ne '') && ($context ne $creationcontext));
3994: }
3995: if ($createdbefore > 0) {
3996: next if (($created eq '') || ($created > $createdbefore));
3997: }
3998: if ($createdafter > 0) {
3999: next if (($created eq '') || ($created <= $createdafter));
4000: }
1.404 raeburn 4001: if ($catfilter ne '') {
1.406 raeburn 4002: next if ($items->{'categories'} eq '');
4003: my @categories = split('&',$items->{'categories'});
1.407 raeburn 4004: next if (@categories == 0);
4005: my @subcats = split('&',$catfilter);
4006: my $matchcat = 0;
4007: foreach my $cat (@categories) {
4008: if (grep(/^\Q$cat\E$/,@subcats)) {
4009: $matchcat = 1;
4010: last;
4011: }
4012: }
4013: next if (!$matchcat);
1.404 raeburn 4014: }
4015: if ($caller eq 'coursecatalog') {
1.405 raeburn 4016: if ($items->{'hidefromcat'} eq 'yes') {
4017: next if !$showhidden;
1.401 raeburn 4018: }
1.384 raeburn 4019: }
1.383 raeburn 4020: } else {
1.401 raeburn 4021: next if ($catfilter ne '');
1.419 raeburn 4022: next if ($selfenrollonly);
1.427 raeburn 4023: next if ($createdbefore || $createdafter);
4024: next if ($creationcontext ne '.');
1.419 raeburn 4025: if ((defined($clonerudom)) && (defined($cloneruname))) {
4026: if ($cc_clone{$unesc_key}) {
4027: $canclone = 1;
4028: $val{'cloners'} = &escape($cloneruname.':'.$clonerudom);
4029: }
4030: }
1.384 raeburn 4031: $is_hash = 0;
1.388 raeburn 4032: my @courseitems = split(/:/,$value);
1.403 raeburn 4033: $lasttime = pop(@courseitems);
1.402 raeburn 4034: if ($hashref->{$lasttime_key} eq '') {
4035: next if ($lasttime<$since);
4036: }
1.384 raeburn 4037: ($val{'descr'},$val{'inst_code'},$val{'owner'},$val{'type'}) = @courseitems;
1.383 raeburn 4038: }
1.419 raeburn 4039: if ($cloneonly) {
4040: next unless ($canclone);
4041: }
1.266 raeburn 4042: my $match = 1;
1.384 raeburn 4043: if ($description ne '.') {
4044: if (!$is_hash) {
4045: $unesc_val{'descr'} = &unescape($val{'descr'});
4046: }
4047: if (eval{$unesc_val{'descr'} !~ /\Q$description\E/i}) {
1.266 raeburn 4048: $match = 0;
1.384 raeburn 4049: }
1.266 raeburn 4050: }
1.384 raeburn 4051: if ($instcodefilter ne '.') {
4052: if (!$is_hash) {
4053: $unesc_val{'inst_code'} = &unescape($val{'inst_code'});
4054: }
1.418 raeburn 4055: if ($regexp_ok == 1) {
1.384 raeburn 4056: if (eval{$unesc_val{'inst_code'} !~ /$instcodefilter/}) {
1.344 raeburn 4057: $match = 0;
4058: }
1.418 raeburn 4059: } elsif ($regexp_ok == -1) {
4060: if (eval{$unesc_val{'inst_code'} =~ /$instcodefilter/}) {
4061: $match = 0;
4062: }
1.344 raeburn 4063: } else {
1.384 raeburn 4064: if (eval{$unesc_val{'inst_code'} !~ /\Q$instcodefilter\E/i}) {
1.344 raeburn 4065: $match = 0;
4066: }
1.266 raeburn 4067: }
1.234 foxr 4068: }
1.384 raeburn 4069: if ($ownerfilter ne '.') {
4070: if (!$is_hash) {
4071: $unesc_val{'owner'} = &unescape($val{'owner'});
4072: }
1.336 raeburn 4073: if (($ownerunamefilter ne '') && ($ownerdomfilter ne '')) {
1.384 raeburn 4074: if ($unesc_val{'owner'} =~ /:/) {
4075: if (eval{$unesc_val{'owner'} !~
4076: /\Q$ownerunamefilter\E:\Q$ownerdomfilter\E$/i}) {
1.336 raeburn 4077: $match = 0;
4078: }
4079: } else {
1.384 raeburn 4080: if (eval{$unesc_val{'owner'} !~ /\Q$ownerunamefilter\E/i}) {
1.336 raeburn 4081: $match = 0;
4082: }
4083: }
4084: } elsif ($ownerunamefilter ne '') {
1.384 raeburn 4085: if ($unesc_val{'owner'} =~ /:/) {
4086: if (eval{$unesc_val{'owner'} !~ /\Q$ownerunamefilter\E:[^:]+$/i}) {
1.336 raeburn 4087: $match = 0;
4088: }
4089: } else {
1.384 raeburn 4090: if (eval{$unesc_val{'owner'} !~ /\Q$ownerunamefilter\E/i}) {
1.336 raeburn 4091: $match = 0;
4092: }
4093: }
4094: } elsif ($ownerdomfilter ne '') {
1.384 raeburn 4095: if ($unesc_val{'owner'} =~ /:/) {
4096: if (eval{$unesc_val{'owner'} !~ /^[^:]+:\Q$ownerdomfilter\E/}) {
1.336 raeburn 4097: $match = 0;
4098: }
4099: } else {
4100: if ($ownerdomfilter ne $udom) {
4101: $match = 0;
4102: }
4103: }
1.266 raeburn 4104: }
4105: }
1.384 raeburn 4106: if ($coursefilter ne '.') {
4107: if (eval{$unesc_key !~ /^$udom(_)\Q$coursefilter\E$/}) {
1.282 raeburn 4108: $match = 0;
4109: }
4110: }
1.384 raeburn 4111: if ($typefilter ne '.') {
4112: if (!$is_hash) {
4113: $unesc_val{'type'} = &unescape($val{'type'});
4114: }
4115: if ($unesc_val{'type'} eq '') {
1.333 raeburn 4116: if ($typefilter ne 'Course') {
4117: $match = 0;
4118: }
1.383 raeburn 4119: } else {
1.384 raeburn 4120: if (eval{$unesc_val{'type'} !~ /^\Q$typefilter\E$/}) {
1.333 raeburn 4121: $match = 0;
4122: }
4123: }
4124: }
1.266 raeburn 4125: if ($match == 1) {
1.384 raeburn 4126: if ($rtn_as_hash) {
4127: if ($is_hash) {
1.419 raeburn 4128: if ($valchange) {
4129: my $newvalue = &Apache::lonnet::freeze_escape($items);
4130: $qresult.=$key.'='.$newvalue.'&';
4131: } else {
4132: $qresult.=$key.'='.$value.'&';
4133: }
1.384 raeburn 4134: } else {
1.388 raeburn 4135: my %rtnhash = ( 'description' => &unescape($val{'descr'}),
4136: 'inst_code' => &unescape($val{'inst_code'}),
4137: 'owner' => &unescape($val{'owner'}),
4138: 'type' => &unescape($val{'type'}),
1.419 raeburn 4139: 'cloners' => &unescape($val{'cloners'}),
1.384 raeburn 4140: );
4141: my $items = &Apache::lonnet::freeze_escape(\%rtnhash);
4142: $qresult.=$key.'='.$items.'&';
4143: }
1.383 raeburn 4144: } else {
1.384 raeburn 4145: if ($is_hash) {
4146: $qresult .= $key.'='.&escape($unesc_val{'descr'}).':'.
4147: &escape($unesc_val{'inst_code'}).':'.
4148: &escape($unesc_val{'owner'}).'&';
4149: } else {
4150: $qresult .= $key.'='.$val{'descr'}.':'.$val{'inst_code'}.
4151: ':'.$val{'owner'}.'&';
4152: }
1.383 raeburn 4153: }
1.266 raeburn 4154: }
1.234 foxr 4155: }
1.311 albertel 4156: if (&untie_domain_hash($hashref)) {
1.234 foxr 4157: chop($qresult);
1.387 albertel 4158: &Reply($client, \$qresult, $userinput);
1.234 foxr 4159: } else {
4160: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4161: "while attempting courseiddump\n", $userinput);
4162: }
4163: } else {
4164: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
4165: "while attempting courseiddump\n", $userinput);
4166: }
4167: return 1;
4168: }
4169: ®ister_handler("courseiddump", \&dump_course_id_handler, 0, 1, 0);
1.238 foxr 4170:
1.438 raeburn 4171: sub course_lastaccess_handler {
4172: my ($cmd, $tail, $client) = @_;
4173: my $userinput = "$cmd:$tail";
4174: my ($cdom,$cnum) = split(':',$tail);
4175: my (%lastaccess,$qresult);
4176: my $hashref = &tie_domain_hash($cdom, "nohist_courseids", &GDBM_WRCREAT());
4177: if ($hashref) {
4178: while (my ($key,$value) = each(%$hashref)) {
4179: my ($unesc_key,$lasttime);
4180: $unesc_key = &unescape($key);
4181: if ($cnum) {
4182: next unless ($unesc_key =~ /\Q$cdom\E_\Q$cnum\E$/);
4183: }
4184: if ($unesc_key =~ /^lasttime:($LONCAPA::match_domain\_$LONCAPA::match_courseid)/) {
4185: $lastaccess{$1} = $value;
4186: } else {
4187: my $items = &Apache::lonnet::thaw_unescape($value);
4188: if (ref($items) eq 'HASH') {
4189: unless ($lastaccess{$unesc_key}) {
4190: $lastaccess{$unesc_key} = '';
4191: }
4192: } else {
4193: my @courseitems = split(':',$value);
4194: $lastaccess{$unesc_key} = pop(@courseitems);
4195: }
4196: }
4197: }
4198: foreach my $cid (sort(keys(%lastaccess))) {
4199: $qresult.=&escape($cid).'='.$lastaccess{$cid}.'&';
4200: }
4201: if (&untie_domain_hash($hashref)) {
4202: if ($qresult) {
4203: chop($qresult);
4204: }
4205: &Reply($client, \$qresult, $userinput);
4206: } else {
4207: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4208: "while attempting lastacourseaccess\n", $userinput);
4209: }
4210: } else {
4211: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
4212: "while attempting lastcourseaccess\n", $userinput);
4213: }
4214: return 1;
4215: }
4216: ®ister_handler("courselastaccess",\&course_lastaccess_handler, 0, 1, 0);
4217:
1.238 foxr 4218: #
1.348 raeburn 4219: # Puts an unencrypted entry in a namespace db file at the domain level
4220: #
4221: # Parameters:
4222: # $cmd - The command that got us here.
4223: # $tail - Tail of the command (remaining parameters).
4224: # $client - File descriptor connected to client.
4225: # Returns
4226: # 0 - Requested to exit, caller should shut down.
4227: # 1 - Continue processing.
4228: # Side effects:
4229: # reply is written to $client.
4230: #
4231: sub put_domain_handler {
4232: my ($cmd,$tail,$client) = @_;
4233:
4234: my $userinput = "$cmd:$tail";
4235:
4236: my ($udom,$namespace,$what) =split(/:/,$tail,3);
4237: chomp($what);
4238: my @pairs=split(/\&/,$what);
4239: my $hashref = &tie_domain_hash($udom, "$namespace", &GDBM_WRCREAT(),
4240: "P", $what);
4241: if ($hashref) {
4242: foreach my $pair (@pairs) {
4243: my ($key,$value)=split(/=/,$pair);
4244: $hashref->{$key}=$value;
4245: }
4246: if (&untie_domain_hash($hashref)) {
4247: &Reply($client, "ok\n", $userinput);
4248: } else {
4249: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4250: "while attempting putdom\n", $userinput);
4251: }
4252: } else {
4253: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
4254: "while attempting putdom\n", $userinput);
4255: }
4256:
4257: return 1;
4258: }
4259: ®ister_handler("putdom", \&put_domain_handler, 0, 1, 0);
4260:
4261: # Unencrypted get from the namespace database file at the domain level.
4262: # This function retrieves a keyed item from a specific named database in the
4263: # domain directory.
4264: #
4265: # Parameters:
4266: # $cmd - Command request keyword (get).
4267: # $tail - Tail of the command. This is a colon separated list
4268: # consisting of the domain and the 'namespace'
4269: # which selects the gdbm file to do the lookup in,
4270: # & separated list of keys to lookup. Note that
4271: # the values are returned as an & separated list too.
4272: # $client - File descriptor open on the client.
4273: # Returns:
4274: # 1 - Continue processing.
4275: # 0 - Exit.
4276: # Side effects:
4277: # reply is written to $client.
4278: #
4279:
4280: sub get_domain_handler {
4281: my ($cmd, $tail, $client) = @_;
4282:
1.461 foxr 4283:
1.348 raeburn 4284: my $userinput = "$client:$tail";
4285:
4286: my ($udom,$namespace,$what)=split(/:/,$tail,3);
4287: chomp($what);
4288: my @queries=split(/\&/,$what);
4289: my $qresult='';
4290: my $hashref = &tie_domain_hash($udom, "$namespace", &GDBM_READER());
4291: if ($hashref) {
4292: for (my $i=0;$i<=$#queries;$i++) {
4293: $qresult.="$hashref->{$queries[$i]}&";
4294: }
4295: if (&untie_domain_hash($hashref)) {
4296: $qresult=~s/\&$//;
1.387 albertel 4297: &Reply($client, \$qresult, $userinput);
1.348 raeburn 4298: } else {
4299: &Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ".
4300: "while attempting getdom\n",$userinput);
4301: }
4302: } else {
4303: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
4304: "while attempting getdom\n",$userinput);
4305: }
4306:
4307: return 1;
4308: }
1.360 raeburn 4309: ®ister_handler("getdom", \&get_domain_handler, 0, 1, 0);
1.348 raeburn 4310:
1.420 raeburn 4311: #
1.238 foxr 4312: # Puts an id to a domains id database.
4313: #
4314: # Parameters:
4315: # $cmd - The command that triggered us.
4316: # $tail - Remainder of the request other than the command. This is a
4317: # colon separated list containing:
4318: # $domain - The domain for which we are writing the id.
4319: # $pairs - The id info to write... this is and & separated list
4320: # of keyword=value.
4321: # $client - Socket open on the client.
4322: # Returns:
4323: # 1 - Continue processing.
4324: # Side effects:
4325: # reply is written to $client.
4326: #
4327: sub put_id_handler {
4328: my ($cmd,$tail,$client) = @_;
4329:
4330:
4331: my $userinput = "$cmd:$tail";
4332:
4333: my ($udom,$what)=split(/:/,$tail);
4334: chomp($what);
4335: my @pairs=split(/\&/,$what);
4336: my $hashref = &tie_domain_hash($udom, "ids", &GDBM_WRCREAT(),
4337: "P", $what);
4338: if ($hashref) {
4339: foreach my $pair (@pairs) {
4340: my ($key,$value)=split(/=/,$pair);
4341: $hashref->{$key}=$value;
4342: }
1.311 albertel 4343: if (&untie_domain_hash($hashref)) {
1.238 foxr 4344: &Reply($client, "ok\n", $userinput);
4345: } else {
4346: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4347: "while attempting idput\n", $userinput);
4348: }
4349: } else {
4350: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
4351: "while attempting idput\n", $userinput);
4352: }
4353:
4354: return 1;
4355: }
1.263 albertel 4356: ®ister_handler("idput", \&put_id_handler, 0, 1, 0);
1.238 foxr 4357:
4358: #
4359: # Retrieves a set of id values from the id database.
4360: # Returns an & separated list of results, one for each requested id to the
4361: # client.
4362: #
4363: # Parameters:
4364: # $cmd - Command keyword that caused us to be dispatched.
4365: # $tail - Tail of the command. Consists of a colon separated:
4366: # domain - the domain whose id table we dump
4367: # ids Consists of an & separated list of
4368: # id keywords whose values will be fetched.
4369: # nonexisting keywords will have an empty value.
4370: # $client - Socket open on the client.
4371: #
4372: # Returns:
4373: # 1 - indicating processing should continue.
4374: # Side effects:
4375: # An & separated list of results is written to $client.
4376: #
4377: sub get_id_handler {
4378: my ($cmd, $tail, $client) = @_;
4379:
4380:
4381: my $userinput = "$client:$tail";
4382:
4383: my ($udom,$what)=split(/:/,$tail);
4384: chomp($what);
4385: my @queries=split(/\&/,$what);
4386: my $qresult='';
4387: my $hashref = &tie_domain_hash($udom, "ids", &GDBM_READER());
4388: if ($hashref) {
4389: for (my $i=0;$i<=$#queries;$i++) {
4390: $qresult.="$hashref->{$queries[$i]}&";
4391: }
1.311 albertel 4392: if (&untie_domain_hash($hashref)) {
1.238 foxr 4393: $qresult=~s/\&$//;
1.387 albertel 4394: &Reply($client, \$qresult, $userinput);
1.238 foxr 4395: } else {
4396: &Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ".
4397: "while attempting idget\n",$userinput);
4398: }
4399: } else {
4400: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
4401: "while attempting idget\n",$userinput);
4402: }
4403:
4404: return 1;
4405: }
1.263 albertel 4406: ®ister_handler("idget", \&get_id_handler, 0, 1, 0);
1.238 foxr 4407:
4408: #
1.299 raeburn 4409: # Puts broadcast e-mail sent by Domain Coordinator in nohist_dcmail database
4410: #
4411: # Parameters
4412: # $cmd - Command keyword that caused us to be dispatched.
4413: # $tail - Tail of the command. Consists of a colon separated:
4414: # domain - the domain whose dcmail we are recording
4415: # email Consists of key=value pair
4416: # where key is unique msgid
4417: # and value is message (in XML)
4418: # $client - Socket open on the client.
4419: #
4420: # Returns:
4421: # 1 - indicating processing should continue.
4422: # Side effects
4423: # reply is written to $client.
4424: #
4425: sub put_dcmail_handler {
4426: my ($cmd,$tail,$client) = @_;
4427: my $userinput = "$cmd:$tail";
1.463 foxr 4428:
4429:
1.299 raeburn 4430: my ($udom,$what)=split(/:/,$tail);
4431: chomp($what);
4432: my $hashref = &tie_domain_hash($udom, "nohist_dcmail", &GDBM_WRCREAT());
4433: if ($hashref) {
4434: my ($key,$value)=split(/=/,$what);
4435: $hashref->{$key}=$value;
4436: }
1.311 albertel 4437: if (&untie_domain_hash($hashref)) {
1.299 raeburn 4438: &Reply($client, "ok\n", $userinput);
4439: } else {
4440: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4441: "while attempting dcmailput\n", $userinput);
4442: }
4443: return 1;
4444: }
4445: ®ister_handler("dcmailput", \&put_dcmail_handler, 0, 1, 0);
4446:
4447: #
4448: # Retrieves broadcast e-mail from nohist_dcmail database
4449: # Returns to client an & separated list of key=value pairs,
4450: # where key is msgid and value is message information.
4451: #
4452: # Parameters
4453: # $cmd - Command keyword that caused us to be dispatched.
4454: # $tail - Tail of the command. Consists of a colon separated:
4455: # domain - the domain whose dcmail table we dump
4456: # startfilter - beginning of time window
4457: # endfilter - end of time window
4458: # sendersfilter - & separated list of username:domain
4459: # for senders to search for.
4460: # $client - Socket open on the client.
4461: #
4462: # Returns:
4463: # 1 - indicating processing should continue.
4464: # Side effects
4465: # reply (& separated list of msgid=messageinfo pairs) is
4466: # written to $client.
4467: #
4468: sub dump_dcmail_handler {
4469: my ($cmd, $tail, $client) = @_;
4470:
4471: my $userinput = "$cmd:$tail";
4472: my ($udom,$startfilter,$endfilter,$sendersfilter) = split(/:/,$tail);
4473: chomp($sendersfilter);
4474: my @senders = ();
4475: if (defined($startfilter)) {
4476: $startfilter=&unescape($startfilter);
4477: } else {
4478: $startfilter='.';
4479: }
4480: if (defined($endfilter)) {
4481: $endfilter=&unescape($endfilter);
4482: } else {
4483: $endfilter='.';
4484: }
4485: if (defined($sendersfilter)) {
4486: $sendersfilter=&unescape($sendersfilter);
1.300 albertel 4487: @senders = map { &unescape($_) } split(/\&/,$sendersfilter);
1.299 raeburn 4488: }
4489:
4490: my $qresult='';
4491: my $hashref = &tie_domain_hash($udom, "nohist_dcmail", &GDBM_WRCREAT());
4492: if ($hashref) {
4493: while (my ($key,$value) = each(%$hashref)) {
4494: my $match = 1;
1.303 albertel 4495: my ($timestamp,$subj,$uname,$udom) =
4496: split(/:/,&unescape(&unescape($key)),5); # yes, twice really
1.299 raeburn 4497: $subj = &unescape($subj);
4498: unless ($startfilter eq '.' || !defined($startfilter)) {
4499: if ($timestamp < $startfilter) {
4500: $match = 0;
4501: }
4502: }
4503: unless ($endfilter eq '.' || !defined($endfilter)) {
4504: if ($timestamp > $endfilter) {
4505: $match = 0;
4506: }
4507: }
4508: unless (@senders < 1) {
4509: unless (grep/^$uname:$udom$/,@senders) {
4510: $match = 0;
4511: }
4512: }
4513: if ($match == 1) {
4514: $qresult.=$key.'='.$value.'&';
4515: }
4516: }
1.311 albertel 4517: if (&untie_domain_hash($hashref)) {
1.299 raeburn 4518: chop($qresult);
1.387 albertel 4519: &Reply($client, \$qresult, $userinput);
1.299 raeburn 4520: } else {
4521: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4522: "while attempting dcmaildump\n", $userinput);
4523: }
4524: } else {
4525: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
4526: "while attempting dcmaildump\n", $userinput);
4527: }
4528: return 1;
4529: }
4530:
4531: ®ister_handler("dcmaildump", \&dump_dcmail_handler, 0, 1, 0);
4532:
4533: #
4534: # Puts domain roles in nohist_domainroles database
4535: #
4536: # Parameters
4537: # $cmd - Command keyword that caused us to be dispatched.
4538: # $tail - Tail of the command. Consists of a colon separated:
4539: # domain - the domain whose roles we are recording
4540: # role - Consists of key=value pair
4541: # where key is unique role
4542: # and value is start/end date information
4543: # $client - Socket open on the client.
4544: #
4545: # Returns:
4546: # 1 - indicating processing should continue.
4547: # Side effects
4548: # reply is written to $client.
4549: #
4550:
4551: sub put_domainroles_handler {
4552: my ($cmd,$tail,$client) = @_;
4553:
4554: my $userinput = "$cmd:$tail";
4555: my ($udom,$what)=split(/:/,$tail);
4556: chomp($what);
4557: my @pairs=split(/\&/,$what);
4558: my $hashref = &tie_domain_hash($udom, "nohist_domainroles", &GDBM_WRCREAT());
4559: if ($hashref) {
4560: foreach my $pair (@pairs) {
4561: my ($key,$value)=split(/=/,$pair);
4562: $hashref->{$key}=$value;
4563: }
1.311 albertel 4564: if (&untie_domain_hash($hashref)) {
1.299 raeburn 4565: &Reply($client, "ok\n", $userinput);
4566: } else {
4567: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4568: "while attempting domroleput\n", $userinput);
4569: }
4570: } else {
4571: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
4572: "while attempting domroleput\n", $userinput);
4573: }
4574:
4575: return 1;
4576: }
4577:
4578: ®ister_handler("domroleput", \&put_domainroles_handler, 0, 1, 0);
4579:
4580: #
4581: # Retrieves domain roles from nohist_domainroles database
4582: # Returns to client an & separated list of key=value pairs,
4583: # where key is role and value is start and end date information.
4584: #
4585: # Parameters
4586: # $cmd - Command keyword that caused us to be dispatched.
4587: # $tail - Tail of the command. Consists of a colon separated:
4588: # domain - the domain whose domain roles table we dump
4589: # $client - Socket open on the client.
4590: #
4591: # Returns:
4592: # 1 - indicating processing should continue.
4593: # Side effects
4594: # reply (& separated list of role=start/end info pairs) is
4595: # written to $client.
4596: #
4597: sub dump_domainroles_handler {
4598: my ($cmd, $tail, $client) = @_;
4599:
4600: my $userinput = "$cmd:$tail";
4601: my ($udom,$startfilter,$endfilter,$rolesfilter) = split(/:/,$tail);
4602: chomp($rolesfilter);
4603: my @roles = ();
4604: if (defined($startfilter)) {
4605: $startfilter=&unescape($startfilter);
4606: } else {
4607: $startfilter='.';
4608: }
4609: if (defined($endfilter)) {
4610: $endfilter=&unescape($endfilter);
4611: } else {
4612: $endfilter='.';
4613: }
4614: if (defined($rolesfilter)) {
4615: $rolesfilter=&unescape($rolesfilter);
1.300 albertel 4616: @roles = split(/\&/,$rolesfilter);
1.299 raeburn 4617: }
1.421 raeburn 4618:
1.299 raeburn 4619: my $hashref = &tie_domain_hash($udom, "nohist_domainroles", &GDBM_WRCREAT());
4620: if ($hashref) {
4621: my $qresult = '';
4622: while (my ($key,$value) = each(%$hashref)) {
4623: my $match = 1;
1.421 raeburn 4624: my ($end,$start) = split(/:/,&unescape($value));
1.299 raeburn 4625: my ($trole,$uname,$udom,$runame,$rudom,$rsec) = split(/:/,&unescape($key));
1.421 raeburn 4626: unless (@roles < 1) {
4627: unless (grep/^\Q$trole\E$/,@roles) {
4628: $match = 0;
4629: next;
4630: }
4631: }
1.299 raeburn 4632: unless ($startfilter eq '.' || !defined($startfilter)) {
1.415 raeburn 4633: if ((defined($start)) && ($start >= $startfilter)) {
1.299 raeburn 4634: $match = 0;
1.421 raeburn 4635: next;
1.299 raeburn 4636: }
4637: }
4638: unless ($endfilter eq '.' || !defined($endfilter)) {
1.421 raeburn 4639: if ((defined($end)) && (($end > 0) && ($end <= $endfilter))) {
1.299 raeburn 4640: $match = 0;
1.421 raeburn 4641: next;
1.299 raeburn 4642: }
4643: }
4644: if ($match == 1) {
4645: $qresult.=$key.'='.$value.'&';
4646: }
4647: }
1.311 albertel 4648: if (&untie_domain_hash($hashref)) {
1.299 raeburn 4649: chop($qresult);
1.387 albertel 4650: &Reply($client, \$qresult, $userinput);
1.299 raeburn 4651: } else {
4652: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4653: "while attempting domrolesdump\n", $userinput);
4654: }
4655: } else {
4656: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
4657: "while attempting domrolesdump\n", $userinput);
4658: }
4659: return 1;
4660: }
4661:
4662: ®ister_handler("domrolesdump", \&dump_domainroles_handler, 0, 1, 0);
4663:
4664:
1.238 foxr 4665: # Process the tmpput command I'm not sure what this does.. Seems to
4666: # create a file in the lonDaemons/tmp directory of the form $id.tmp
4667: # where Id is the client's ip concatenated with a sequence number.
4668: # The file will contain some value that is passed in. Is this e.g.
4669: # a login token?
4670: #
4671: # Parameters:
4672: # $cmd - The command that got us dispatched.
4673: # $tail - The remainder of the request following $cmd:
4674: # In this case this will be the contents of the file.
4675: # $client - Socket connected to the client.
4676: # Returns:
4677: # 1 indicating processing can continue.
4678: # Side effects:
4679: # A file is created in the local filesystem.
4680: # A reply is sent to the client.
4681: sub tmp_put_handler {
4682: my ($cmd, $what, $client) = @_;
4683:
4684: my $userinput = "$cmd:$what"; # Reconstruct for logging.
4685:
1.347 raeburn 4686: my ($record,$context) = split(/:/,$what);
4687: if ($context ne '') {
4688: chomp($context);
4689: $context = &unescape($context);
4690: }
4691: my ($id,$store);
1.238 foxr 4692: $tmpsnum++;
1.454 raeburn 4693: if (($context eq 'resetpw') || ($context eq 'createaccount')) {
1.347 raeburn 4694: $id = &md5_hex(&md5_hex(time.{}.rand().$$));
4695: } else {
4696: $id = $$.'_'.$clientip.'_'.$tmpsnum;
4697: }
1.238 foxr 4698: $id=~s/\W/\_/g;
1.347 raeburn 4699: $record=~s/\n//g;
1.238 foxr 4700: my $execdir=$perlvar{'lonDaemons'};
4701: if ($store=IO::File->new(">$execdir/tmp/$id.tmp")) {
1.347 raeburn 4702: print $store $record;
1.238 foxr 4703: close $store;
1.387 albertel 4704: &Reply($client, \$id, $userinput);
1.238 foxr 4705: } else {
4706: &Failure( $client, "error: ".($!+0)."IO::File->new Failed ".
4707: "while attempting tmpput\n", $userinput);
4708: }
4709: return 1;
4710:
4711: }
4712: ®ister_handler("tmpput", \&tmp_put_handler, 0, 1, 0);
1.263 albertel 4713:
1.238 foxr 4714: # Processes the tmpget command. This command returns the contents
4715: # of a temporary resource file(?) created via tmpput.
4716: #
4717: # Paramters:
4718: # $cmd - Command that got us dispatched.
4719: # $id - Tail of the command, contain the id of the resource
4720: # we want to fetch.
4721: # $client - socket open on the client.
4722: # Return:
4723: # 1 - Inidcating processing can continue.
4724: # Side effects:
4725: # A reply is sent to the client.
4726: #
4727: sub tmp_get_handler {
4728: my ($cmd, $id, $client) = @_;
4729:
4730: my $userinput = "$cmd:$id";
4731:
4732:
4733: $id=~s/\W/\_/g;
4734: my $store;
4735: my $execdir=$perlvar{'lonDaemons'};
4736: if ($store=IO::File->new("$execdir/tmp/$id.tmp")) {
4737: my $reply=<$store>;
1.387 albertel 4738: &Reply( $client, \$reply, $userinput);
1.238 foxr 4739: close $store;
4740: } else {
4741: &Failure( $client, "error: ".($!+0)."IO::File->new Failed ".
4742: "while attempting tmpget\n", $userinput);
4743: }
4744:
4745: return 1;
4746: }
4747: ®ister_handler("tmpget", \&tmp_get_handler, 0, 1, 0);
1.263 albertel 4748:
1.238 foxr 4749: #
4750: # Process the tmpdel command. This command deletes a temp resource
4751: # created by the tmpput command.
4752: #
4753: # Parameters:
4754: # $cmd - Command that got us here.
4755: # $id - Id of the temporary resource created.
4756: # $client - socket open on the client process.
4757: #
4758: # Returns:
4759: # 1 - Indicating processing should continue.
4760: # Side Effects:
4761: # A file is deleted
4762: # A reply is sent to the client.
4763: sub tmp_del_handler {
4764: my ($cmd, $id, $client) = @_;
4765:
4766: my $userinput= "$cmd:$id";
4767:
4768: chomp($id);
4769: $id=~s/\W/\_/g;
4770: my $execdir=$perlvar{'lonDaemons'};
4771: if (unlink("$execdir/tmp/$id.tmp")) {
4772: &Reply($client, "ok\n", $userinput);
4773: } else {
4774: &Failure( $client, "error: ".($!+0)."Unlink tmp Failed ".
4775: "while attempting tmpdel\n", $userinput);
4776: }
4777:
4778: return 1;
4779:
4780: }
4781: ®ister_handler("tmpdel", \&tmp_del_handler, 0, 1, 0);
1.263 albertel 4782:
1.238 foxr 4783: #
1.246 foxr 4784: # Processes the setannounce command. This command
4785: # creates a file named announce.txt in the top directory of
4786: # the documentn root and sets its contents. The announce.txt file is
4787: # printed in its entirety at the LonCAPA login page. Note:
4788: # once the announcement.txt fileis created it cannot be deleted.
4789: # However, setting the contents of the file to empty removes the
4790: # announcement from the login page of loncapa so who cares.
4791: #
4792: # Parameters:
4793: # $cmd - The command that got us dispatched.
4794: # $announcement - The text of the announcement.
4795: # $client - Socket open on the client process.
4796: # Retunrns:
4797: # 1 - Indicating request processing should continue
4798: # Side Effects:
4799: # The file {DocRoot}/announcement.txt is created.
4800: # A reply is sent to $client.
4801: #
4802: sub set_announce_handler {
4803: my ($cmd, $announcement, $client) = @_;
4804:
4805: my $userinput = "$cmd:$announcement";
4806:
4807: chomp($announcement);
4808: $announcement=&unescape($announcement);
4809: if (my $store=IO::File->new('>'.$perlvar{'lonDocRoot'}.
4810: '/announcement.txt')) {
4811: print $store $announcement;
4812: close $store;
4813: &Reply($client, "ok\n", $userinput);
4814: } else {
4815: &Failure($client, "error: ".($!+0)."\n", $userinput);
4816: }
4817:
4818: return 1;
4819: }
4820: ®ister_handler("setannounce", \&set_announce_handler, 0, 1, 0);
1.263 albertel 4821:
1.246 foxr 4822: #
4823: # Return the version of the daemon. This can be used to determine
4824: # the compatibility of cross version installations or, alternatively to
4825: # simply know who's out of date and who isn't. Note that the version
4826: # is returned concatenated with the tail.
4827: # Parameters:
4828: # $cmd - the request that dispatched to us.
4829: # $tail - Tail of the request (client's version?).
4830: # $client - Socket open on the client.
4831: #Returns:
4832: # 1 - continue processing requests.
4833: # Side Effects:
4834: # Replies with version to $client.
4835: sub get_version_handler {
4836: my ($cmd, $tail, $client) = @_;
4837:
4838: my $userinput = $cmd.$tail;
4839:
4840: &Reply($client, &version($userinput)."\n", $userinput);
4841:
4842:
4843: return 1;
4844: }
4845: ®ister_handler("version", \&get_version_handler, 0, 1, 0);
1.263 albertel 4846:
1.246 foxr 4847: # Set the current host and domain. This is used to support
4848: # multihomed systems. Each IP of the system, or even separate daemons
4849: # on the same IP can be treated as handling a separate lonCAPA virtual
4850: # machine. This command selects the virtual lonCAPA. The client always
4851: # knows the right one since it is lonc and it is selecting the domain/system
4852: # from the hosts.tab file.
4853: # Parameters:
4854: # $cmd - Command that dispatched us.
4855: # $tail - Tail of the command (domain/host requested).
4856: # $socket - Socket open on the client.
4857: #
4858: # Returns:
4859: # 1 - Indicates the program should continue to process requests.
4860: # Side-effects:
4861: # The default domain/system context is modified for this daemon.
4862: # a reply is sent to the client.
4863: #
4864: sub set_virtual_host_handler {
4865: my ($cmd, $tail, $socket) = @_;
4866:
4867: my $userinput ="$cmd:$tail";
4868:
4869: &Reply($client, &sethost($userinput)."\n", $userinput);
4870:
4871:
4872: return 1;
4873: }
1.247 albertel 4874: ®ister_handler("sethost", \&set_virtual_host_handler, 0, 1, 0);
1.246 foxr 4875:
4876: # Process a request to exit:
4877: # - "bye" is sent to the client.
4878: # - The client socket is shutdown and closed.
4879: # - We indicate to the caller that we should exit.
4880: # Formal Parameters:
4881: # $cmd - The command that got us here.
4882: # $tail - Tail of the command (empty).
4883: # $client - Socket open on the tail.
4884: # Returns:
4885: # 0 - Indicating the program should exit!!
4886: #
4887: sub exit_handler {
4888: my ($cmd, $tail, $client) = @_;
4889:
4890: my $userinput = "$cmd:$tail";
4891:
4892: &logthis("Client $clientip ($clientname) hanging up: $userinput");
4893: &Reply($client, "bye\n", $userinput);
4894: $client->shutdown(2); # shutdown the socket forcibly.
4895: $client->close();
4896:
4897: return 0;
4898: }
1.248 foxr 4899: ®ister_handler("exit", \&exit_handler, 0,1,1);
4900: ®ister_handler("init", \&exit_handler, 0,1,1);
4901: ®ister_handler("quit", \&exit_handler, 0,1,1);
4902:
4903: # Determine if auto-enrollment is enabled.
4904: # Note that the original had what I believe to be a defect.
4905: # The original returned 0 if the requestor was not a registerd client.
4906: # It should return "refused".
4907: # Formal Parameters:
4908: # $cmd - The command that invoked us.
4909: # $tail - The tail of the command (Extra command parameters.
4910: # $client - The socket open on the client that issued the request.
4911: # Returns:
4912: # 1 - Indicating processing should continue.
4913: #
4914: sub enrollment_enabled_handler {
4915: my ($cmd, $tail, $client) = @_;
4916: my $userinput = $cmd.":".$tail; # For logging purposes.
4917:
4918:
1.337 albertel 4919: my ($cdom) = split(/:/, $tail, 2); # Domain we're asking about.
4920:
1.248 foxr 4921: my $outcome = &localenroll::run($cdom);
1.387 albertel 4922: &Reply($client, \$outcome, $userinput);
1.248 foxr 4923:
4924: return 1;
4925: }
4926: ®ister_handler("autorun", \&enrollment_enabled_handler, 0, 1, 0);
4927:
1.417 raeburn 4928: #
1.423 raeburn 4929: # Validate an institutional code used for a LON-CAPA course.
1.417 raeburn 4930: #
4931: # Formal Parameters:
4932: # $cmd - The command request that got us dispatched.
4933: # $tail - The tail of the command. In this case,
4934: # this is a colon separated set of words that will be split
4935: # into:
1.424 raeburn 4936: # $dom - The domain for which the check of
4937: # institutional course code will occur.
4938: #
4939: # $instcode - The institutional code for the course
4940: # being requested, or validated for rights
4941: # to request.
4942: #
4943: # $owner - The course requestor (who will be the
4944: # course owner, in the form username:domain
4945: #
1.417 raeburn 4946: # $client - Socket open on the client.
4947: # Returns:
4948: # 1 - Indicating processing should continue.
4949: #
4950: sub validate_instcode_handler {
4951: my ($cmd, $tail, $client) = @_;
4952: my $userinput = "$cmd:$tail";
1.423 raeburn 4953: my ($dom,$instcode,$owner) = split(/:/, $tail);
1.422 raeburn 4954: $instcode = &unescape($instcode);
4955: $owner = &unescape($owner);
1.426 raeburn 4956: my ($outcome,$description) =
4957: &localenroll::validate_instcode($dom,$instcode,$owner);
4958: my $result = &escape($outcome).'&'.&escape($description);
4959: &Reply($client, \$result, $userinput);
1.417 raeburn 4960:
4961: return 1;
4962: }
4963: ®ister_handler("autovalidateinstcode", \&validate_instcode_handler, 0, 1, 0);
4964:
1.248 foxr 4965: # Get the official sections for which auto-enrollment is possible.
4966: # Since the admin people won't know about 'unofficial sections'
4967: # we cannot auto-enroll on them.
4968: # Formal Parameters:
4969: # $cmd - The command request that got us dispatched here.
4970: # $tail - The remainder of the request. In our case this
4971: # will be split into:
4972: # $coursecode - The course name from the admin point of view.
4973: # $cdom - The course's domain(?).
4974: # $client - Socket open on the client.
4975: # Returns:
4976: # 1 - Indiciting processing should continue.
4977: #
4978: sub get_sections_handler {
4979: my ($cmd, $tail, $client) = @_;
4980: my $userinput = "$cmd:$tail";
4981:
4982: my ($coursecode, $cdom) = split(/:/, $tail);
4983: my @secs = &localenroll::get_sections($coursecode,$cdom);
4984: my $seclist = &escape(join(':',@secs));
4985:
1.387 albertel 4986: &Reply($client, \$seclist, $userinput);
1.248 foxr 4987:
4988:
4989: return 1;
4990: }
4991: ®ister_handler("autogetsections", \&get_sections_handler, 0, 1, 0);
4992:
4993: # Validate the owner of a new course section.
4994: #
4995: # Formal Parameters:
4996: # $cmd - Command that got us dispatched.
4997: # $tail - the remainder of the command. For us this consists of a
4998: # colon separated string containing:
4999: # $inst - Course Id from the institutions point of view.
5000: # $owner - Proposed owner of the course.
5001: # $cdom - Domain of the course (from the institutions
5002: # point of view?)..
5003: # $client - Socket open on the client.
5004: #
5005: # Returns:
5006: # 1 - Processing should continue.
5007: #
5008: sub validate_course_owner_handler {
5009: my ($cmd, $tail, $client) = @_;
5010: my $userinput = "$cmd:$tail";
5011: my ($inst_course_id, $owner, $cdom) = split(/:/, $tail);
5012:
1.336 raeburn 5013: $owner = &unescape($owner);
1.248 foxr 5014: my $outcome = &localenroll::new_course($inst_course_id,$owner,$cdom);
1.387 albertel 5015: &Reply($client, \$outcome, $userinput);
1.248 foxr 5016:
5017:
5018:
5019: return 1;
5020: }
5021: ®ister_handler("autonewcourse", \&validate_course_owner_handler, 0, 1, 0);
1.263 albertel 5022:
1.248 foxr 5023: #
5024: # Validate a course section in the official schedule of classes
5025: # from the institutions point of view (part of autoenrollment).
5026: #
5027: # Formal Parameters:
5028: # $cmd - The command request that got us dispatched.
5029: # $tail - The tail of the command. In this case,
5030: # this is a colon separated set of words that will be split
5031: # into:
5032: # $inst_course_id - The course/section id from the
5033: # institutions point of view.
5034: # $cdom - The domain from the institutions
5035: # point of view.
5036: # $client - Socket open on the client.
5037: # Returns:
5038: # 1 - Indicating processing should continue.
5039: #
5040: sub validate_course_section_handler {
5041: my ($cmd, $tail, $client) = @_;
5042: my $userinput = "$cmd:$tail";
5043: my ($inst_course_id, $cdom) = split(/:/, $tail);
5044:
5045: my $outcome=&localenroll::validate_courseID($inst_course_id,$cdom);
1.387 albertel 5046: &Reply($client, \$outcome, $userinput);
1.248 foxr 5047:
5048:
5049: return 1;
5050: }
5051: ®ister_handler("autovalidatecourse", \&validate_course_section_handler, 0, 1, 0);
5052:
5053: #
1.340 raeburn 5054: # Validate course owner's access to enrollment data for specific class section.
5055: #
5056: #
5057: # Formal Parameters:
5058: # $cmd - The command request that got us dispatched.
5059: # $tail - The tail of the command. In this case this is a colon separated
5060: # set of words that will be split into:
5061: # $inst_class - Institutional code for the specific class section
5062: # $courseowner - The escaped username:domain of the course owner
5063: # $cdom - The domain of the course from the institution's
5064: # point of view.
5065: # $client - The socket open on the client.
5066: # Returns:
5067: # 1 - continue processing.
5068: #
5069:
5070: sub validate_class_access_handler {
5071: my ($cmd, $tail, $client) = @_;
5072: my $userinput = "$cmd:$tail";
1.383 raeburn 5073: my ($inst_class,$ownerlist,$cdom) = split(/:/, $tail);
1.392 raeburn 5074: my $owners = &unescape($ownerlist);
1.341 albertel 5075: my $outcome;
5076: eval {
5077: local($SIG{__DIE__})='DEFAULT';
1.392 raeburn 5078: $outcome=&localenroll::check_section($inst_class,$owners,$cdom);
1.341 albertel 5079: };
1.387 albertel 5080: &Reply($client,\$outcome, $userinput);
1.340 raeburn 5081:
5082: return 1;
5083: }
5084: ®ister_handler("autovalidateclass_sec", \&validate_class_access_handler, 0, 1, 0);
5085:
5086: #
5087: # Create a password for a new LON-CAPA user added by auto-enrollment.
5088: # Only used for case where authentication method for new user is localauth
1.248 foxr 5089: #
5090: # Formal Parameters:
5091: # $cmd - The command request that got us dispatched.
5092: # $tail - The tail of the command. In this case this is a colon separated
5093: # set of words that will be split into:
1.340 raeburn 5094: # $authparam - An authentication parameter (localauth parameter).
1.248 foxr 5095: # $cdom - The domain of the course from the institution's
5096: # point of view.
5097: # $client - The socket open on the client.
5098: # Returns:
5099: # 1 - continue processing.
5100: #
5101: sub create_auto_enroll_password_handler {
5102: my ($cmd, $tail, $client) = @_;
5103: my $userinput = "$cmd:$tail";
5104:
5105: my ($authparam, $cdom) = split(/:/, $userinput);
5106:
5107: my ($create_passwd,$authchk);
5108: ($authparam,
5109: $create_passwd,
5110: $authchk) = &localenroll::create_password($authparam,$cdom);
5111:
5112: &Reply($client, &escape($authparam.':'.$create_passwd.':'.$authchk)."\n",
5113: $userinput);
5114:
5115:
5116: return 1;
5117: }
5118: ®ister_handler("autocreatepassword", \&create_auto_enroll_password_handler,
5119: 0, 1, 0);
5120:
5121: # Retrieve and remove temporary files created by/during autoenrollment.
5122: #
5123: # Formal Parameters:
5124: # $cmd - The command that got us dispatched.
5125: # $tail - The tail of the command. In our case this is a colon
5126: # separated list that will be split into:
5127: # $filename - The name of the file to remove.
5128: # The filename is given as a path relative to
5129: # the LonCAPA temp file directory.
5130: # $client - Socket open on the client.
5131: #
5132: # Returns:
5133: # 1 - Continue processing.
5134: sub retrieve_auto_file_handler {
5135: my ($cmd, $tail, $client) = @_;
5136: my $userinput = "cmd:$tail";
5137:
5138: my ($filename) = split(/:/, $tail);
5139:
5140: my $source = $perlvar{'lonDaemons'}.'/tmp/'.$filename;
5141: if ( (-e $source) && ($filename ne '') ) {
5142: my $reply = '';
5143: if (open(my $fh,$source)) {
5144: while (<$fh>) {
5145: chomp($_);
5146: $_ =~ s/^\s+//g;
5147: $_ =~ s/\s+$//g;
5148: $reply .= $_;
5149: }
5150: close($fh);
5151: &Reply($client, &escape($reply)."\n", $userinput);
5152:
5153: # Does this have to be uncommented??!? (RF).
5154: #
5155: # unlink($source);
5156: } else {
5157: &Failure($client, "error\n", $userinput);
5158: }
5159: } else {
5160: &Failure($client, "error\n", $userinput);
5161: }
5162:
5163:
5164: return 1;
5165: }
5166: ®ister_handler("autoretrieve", \&retrieve_auto_file_handler, 0,1,0);
5167:
1.423 raeburn 5168: sub crsreq_checks_handler {
5169: my ($cmd, $tail, $client) = @_;
5170: my $userinput = "$cmd:$tail";
5171: my $dom = $tail;
5172: my $result;
1.424 raeburn 5173: my @reqtypes = ('official','unofficial','community');
1.423 raeburn 5174: eval {
5175: local($SIG{__DIE__})='DEFAULT';
5176: my %validations;
1.424 raeburn 5177: my $response = &localenroll::crsreq_checks($dom,\@reqtypes,
5178: \%validations);
1.423 raeburn 5179: if ($response eq 'ok') {
5180: foreach my $key (keys(%validations)) {
5181: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($validations{$key}).'&';
5182: }
5183: $result =~ s/\&$//;
5184: } else {
5185: $result = 'error';
5186: }
5187: };
5188: if (!$@) {
5189: &Reply($client, \$result, $userinput);
5190: } else {
5191: &Failure($client,"unknown_cmd\n",$userinput);
5192: }
5193: return 1;
5194: }
5195: ®ister_handler("autocrsreqchecks", \&crsreq_checks_handler, 0, 1, 0);
5196:
5197: sub validate_crsreq_handler {
5198: my ($cmd, $tail, $client) = @_;
5199: my $userinput = "$cmd:$tail";
5200: my ($dom,$owner,$crstype,$inststatuslist,$instcode,$instseclist) = split(/:/, $tail);
5201: $instcode = &unescape($instcode);
5202: $owner = &unescape($owner);
5203: $crstype = &unescape($crstype);
5204: $inststatuslist = &unescape($inststatuslist);
5205: $instcode = &unescape($instcode);
5206: $instseclist = &unescape($instseclist);
5207: my $outcome;
5208: eval {
5209: local($SIG{__DIE__})='DEFAULT';
5210: $outcome = &localenroll::validate_crsreq($dom,$owner,$crstype,
5211: $inststatuslist,$instcode,
5212: $instseclist);
5213: };
5214: if (!$@) {
5215: &Reply($client, \$outcome, $userinput);
5216: } else {
5217: &Failure($client,"unknown_cmd\n",$userinput);
5218: }
5219: return 1;
5220: }
5221: ®ister_handler("autocrsreqvalidation", \&validate_crsreq_handler, 0, 1, 0);
5222:
1.248 foxr 5223: #
5224: # Read and retrieve institutional code format (for support form).
5225: # Formal Parameters:
5226: # $cmd - Command that dispatched us.
5227: # $tail - Tail of the command. In this case it conatins
5228: # the course domain and the coursename.
5229: # $client - Socket open on the client.
5230: # Returns:
5231: # 1 - Continue processing.
5232: #
5233: sub get_institutional_code_format_handler {
5234: my ($cmd, $tail, $client) = @_;
5235: my $userinput = "$cmd:$tail";
5236:
5237: my $reply;
5238: my($cdom,$course) = split(/:/,$tail);
5239: my @pairs = split/\&/,$course;
5240: my %instcodes = ();
5241: my %codes = ();
5242: my @codetitles = ();
5243: my %cat_titles = ();
5244: my %cat_order = ();
5245: foreach (@pairs) {
5246: my ($key,$value) = split/=/,$_;
5247: $instcodes{&unescape($key)} = &unescape($value);
5248: }
5249: my $formatreply = &localenroll::instcode_format($cdom,
5250: \%instcodes,
5251: \%codes,
5252: \@codetitles,
5253: \%cat_titles,
5254: \%cat_order);
5255: if ($formatreply eq 'ok') {
1.365 albertel 5256: my $codes_str = &Apache::lonnet::hash2str(%codes);
5257: my $codetitles_str = &Apache::lonnet::array2str(@codetitles);
5258: my $cat_titles_str = &Apache::lonnet::hash2str(%cat_titles);
5259: my $cat_order_str = &Apache::lonnet::hash2str(%cat_order);
1.248 foxr 5260: &Reply($client,
5261: $codes_str.':'.$codetitles_str.':'.$cat_titles_str.':'
5262: .$cat_order_str."\n",
5263: $userinput);
5264: } else {
5265: # this else branch added by RF since if not ok, lonc will
5266: # hang waiting on reply until timeout.
5267: #
5268: &Reply($client, "format_error\n", $userinput);
5269: }
5270:
5271: return 1;
5272: }
1.265 albertel 5273: ®ister_handler("autoinstcodeformat",
5274: \&get_institutional_code_format_handler,0,1,0);
1.246 foxr 5275:
1.345 raeburn 5276: sub get_institutional_defaults_handler {
5277: my ($cmd, $tail, $client) = @_;
5278: my $userinput = "$cmd:$tail";
5279:
5280: my $dom = $tail;
5281: my %defaults_hash;
5282: my @code_order;
5283: my $outcome;
5284: eval {
5285: local($SIG{__DIE__})='DEFAULT';
5286: $outcome = &localenroll::instcode_defaults($dom,\%defaults_hash,
5287: \@code_order);
5288: };
5289: if (!$@) {
5290: if ($outcome eq 'ok') {
5291: my $result='';
5292: while (my ($key,$value) = each(%defaults_hash)) {
5293: $result.=&escape($key).'='.&escape($value).'&';
5294: }
5295: $result .= 'code_order='.&escape(join('&',@code_order));
1.387 albertel 5296: &Reply($client,\$result,$userinput);
1.345 raeburn 5297: } else {
5298: &Reply($client,"error\n", $userinput);
5299: }
5300: } else {
5301: &Failure($client,"unknown_cmd\n",$userinput);
5302: }
5303: }
5304: ®ister_handler("autoinstcodedefaults",
5305: \&get_institutional_defaults_handler,0,1,0);
5306:
1.416 raeburn 5307: sub get_possible_instcodes_handler {
5308: my ($cmd, $tail, $client) = @_;
5309: my $userinput = "$cmd:$tail";
5310:
5311: my $reply;
5312: my $cdom = $tail;
1.417 raeburn 5313: my (@codetitles,%cat_titles,%cat_order,@code_order);
1.416 raeburn 5314: my $formatreply = &localenroll::possible_instcodes($cdom,
5315: \@codetitles,
5316: \%cat_titles,
1.417 raeburn 5317: \%cat_order,
5318: \@code_order);
1.416 raeburn 5319: if ($formatreply eq 'ok') {
5320: my $result = join('&',map {&escape($_);} (@codetitles)).':';
1.417 raeburn 5321: $result .= join('&',map {&escape($_);} (@code_order)).':';
1.416 raeburn 5322: foreach my $key (keys(%cat_titles)) {
5323: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($cat_titles{$key}).'&';
5324: }
5325: $result =~ s/\&$//;
5326: $result .= ':';
5327: foreach my $key (keys(%cat_order)) {
5328: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($cat_order{$key}).'&';
5329: }
5330: $result =~ s/\&$//;
5331: &Reply($client,\$result,$userinput);
5332: } else {
5333: &Reply($client, "format_error\n", $userinput);
5334: }
5335: return 1;
5336: }
5337: ®ister_handler("autopossibleinstcodes",
5338: \&get_possible_instcodes_handler,0,1,0);
5339:
1.381 raeburn 5340: sub get_institutional_user_rules {
5341: my ($cmd, $tail, $client) = @_;
5342: my $userinput = "$cmd:$tail";
5343: my $dom = &unescape($tail);
5344: my (%rules_hash,@rules_order);
5345: my $outcome;
5346: eval {
5347: local($SIG{__DIE__})='DEFAULT';
5348: $outcome = &localenroll::username_rules($dom,\%rules_hash,\@rules_order);
5349: };
5350: if (!$@) {
5351: if ($outcome eq 'ok') {
5352: my $result;
5353: foreach my $key (keys(%rules_hash)) {
5354: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($rules_hash{$key}).'&';
5355: }
5356: $result =~ s/\&$//;
5357: $result .= ':';
5358: if (@rules_order > 0) {
5359: foreach my $item (@rules_order) {
5360: $result .= &escape($item).'&';
5361: }
5362: }
5363: $result =~ s/\&$//;
1.387 albertel 5364: &Reply($client,\$result,$userinput);
1.381 raeburn 5365: } else {
5366: &Reply($client,"error\n", $userinput);
5367: }
5368: } else {
5369: &Failure($client,"unknown_cmd\n",$userinput);
5370: }
5371: }
5372: ®ister_handler("instuserrules",\&get_institutional_user_rules,0,1,0);
5373:
1.389 raeburn 5374: sub get_institutional_id_rules {
5375: my ($cmd, $tail, $client) = @_;
5376: my $userinput = "$cmd:$tail";
5377: my $dom = &unescape($tail);
5378: my (%rules_hash,@rules_order);
5379: my $outcome;
5380: eval {
5381: local($SIG{__DIE__})='DEFAULT';
5382: $outcome = &localenroll::id_rules($dom,\%rules_hash,\@rules_order);
5383: };
5384: if (!$@) {
5385: if ($outcome eq 'ok') {
5386: my $result;
5387: foreach my $key (keys(%rules_hash)) {
5388: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($rules_hash{$key}).'&';
5389: }
5390: $result =~ s/\&$//;
5391: $result .= ':';
5392: if (@rules_order > 0) {
5393: foreach my $item (@rules_order) {
5394: $result .= &escape($item).'&';
5395: }
5396: }
5397: $result =~ s/\&$//;
5398: &Reply($client,\$result,$userinput);
5399: } else {
5400: &Reply($client,"error\n", $userinput);
5401: }
5402: } else {
5403: &Failure($client,"unknown_cmd\n",$userinput);
5404: }
5405: }
5406: ®ister_handler("instidrules",\&get_institutional_id_rules,0,1,0);
5407:
1.397 raeburn 5408: sub get_institutional_selfcreate_rules {
1.396 raeburn 5409: my ($cmd, $tail, $client) = @_;
5410: my $userinput = "$cmd:$tail";
5411: my $dom = &unescape($tail);
5412: my (%rules_hash,@rules_order);
5413: my $outcome;
5414: eval {
5415: local($SIG{__DIE__})='DEFAULT';
1.397 raeburn 5416: $outcome = &localenroll::selfcreate_rules($dom,\%rules_hash,\@rules_order);
1.396 raeburn 5417: };
5418: if (!$@) {
5419: if ($outcome eq 'ok') {
5420: my $result;
5421: foreach my $key (keys(%rules_hash)) {
5422: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($rules_hash{$key}).'&';
5423: }
5424: $result =~ s/\&$//;
5425: $result .= ':';
5426: if (@rules_order > 0) {
5427: foreach my $item (@rules_order) {
5428: $result .= &escape($item).'&';
5429: }
5430: }
5431: $result =~ s/\&$//;
5432: &Reply($client,\$result,$userinput);
5433: } else {
5434: &Reply($client,"error\n", $userinput);
5435: }
5436: } else {
5437: &Failure($client,"unknown_cmd\n",$userinput);
5438: }
5439: }
1.397 raeburn 5440: ®ister_handler("instemailrules",\&get_institutional_selfcreate_rules,0,1,0);
1.396 raeburn 5441:
1.381 raeburn 5442:
5443: sub institutional_username_check {
5444: my ($cmd, $tail, $client) = @_;
5445: my $userinput = "$cmd:$tail";
5446: my %rulecheck;
5447: my $outcome;
5448: my ($udom,$uname,@rules) = split(/:/,$tail);
5449: $udom = &unescape($udom);
5450: $uname = &unescape($uname);
5451: @rules = map {&unescape($_);} (@rules);
5452: eval {
5453: local($SIG{__DIE__})='DEFAULT';
5454: $outcome = &localenroll::username_check($udom,$uname,\@rules,\%rulecheck);
5455: };
5456: if (!$@) {
5457: if ($outcome eq 'ok') {
5458: my $result='';
5459: foreach my $key (keys(%rulecheck)) {
5460: $result.=&escape($key).'='.&Apache::lonnet::freeze_escape($rulecheck{$key}).'&';
5461: }
1.387 albertel 5462: &Reply($client,\$result,$userinput);
1.381 raeburn 5463: } else {
5464: &Reply($client,"error\n", $userinput);
5465: }
5466: } else {
5467: &Failure($client,"unknown_cmd\n",$userinput);
5468: }
5469: }
5470: ®ister_handler("instrulecheck",\&institutional_username_check,0,1,0);
5471:
1.389 raeburn 5472: sub institutional_id_check {
5473: my ($cmd, $tail, $client) = @_;
5474: my $userinput = "$cmd:$tail";
5475: my %rulecheck;
5476: my $outcome;
5477: my ($udom,$id,@rules) = split(/:/,$tail);
5478: $udom = &unescape($udom);
5479: $id = &unescape($id);
5480: @rules = map {&unescape($_);} (@rules);
5481: eval {
5482: local($SIG{__DIE__})='DEFAULT';
5483: $outcome = &localenroll::id_check($udom,$id,\@rules,\%rulecheck);
5484: };
5485: if (!$@) {
5486: if ($outcome eq 'ok') {
5487: my $result='';
5488: foreach my $key (keys(%rulecheck)) {
5489: $result.=&escape($key).'='.&Apache::lonnet::freeze_escape($rulecheck{$key}).'&';
5490: }
5491: &Reply($client,\$result,$userinput);
5492: } else {
5493: &Reply($client,"error\n", $userinput);
5494: }
5495: } else {
5496: &Failure($client,"unknown_cmd\n",$userinput);
5497: }
5498: }
5499: ®ister_handler("instidrulecheck",\&institutional_id_check,0,1,0);
1.345 raeburn 5500:
1.397 raeburn 5501: sub institutional_selfcreate_check {
1.396 raeburn 5502: my ($cmd, $tail, $client) = @_;
5503: my $userinput = "$cmd:$tail";
5504: my %rulecheck;
5505: my $outcome;
5506: my ($udom,$email,@rules) = split(/:/,$tail);
5507: $udom = &unescape($udom);
5508: $email = &unescape($email);
5509: @rules = map {&unescape($_);} (@rules);
5510: eval {
5511: local($SIG{__DIE__})='DEFAULT';
1.397 raeburn 5512: $outcome = &localenroll::selfcreate_check($udom,$email,\@rules,\%rulecheck);
1.396 raeburn 5513: };
5514: if (!$@) {
5515: if ($outcome eq 'ok') {
5516: my $result='';
5517: foreach my $key (keys(%rulecheck)) {
5518: $result.=&escape($key).'='.&Apache::lonnet::freeze_escape($rulecheck{$key}).'&';
5519: }
5520: &Reply($client,\$result,$userinput);
5521: } else {
5522: &Reply($client,"error\n", $userinput);
5523: }
5524: } else {
5525: &Failure($client,"unknown_cmd\n",$userinput);
5526: }
5527: }
1.397 raeburn 5528: ®ister_handler("instselfcreatecheck",\&institutional_selfcreate_check,0,1,0);
1.396 raeburn 5529:
1.317 raeburn 5530: # Get domain specific conditions for import of student photographs to a course
5531: #
5532: # Retrieves information from photo_permission subroutine in localenroll.
5533: # Returns outcome (ok) if no processing errors, and whether course owner is
5534: # required to accept conditions of use (yes/no).
5535: #
5536: #
5537: sub photo_permission_handler {
5538: my ($cmd, $tail, $client) = @_;
5539: my $userinput = "$cmd:$tail";
5540: my $cdom = $tail;
5541: my ($perm_reqd,$conditions);
1.320 albertel 5542: my $outcome;
5543: eval {
5544: local($SIG{__DIE__})='DEFAULT';
5545: $outcome = &localenroll::photo_permission($cdom,\$perm_reqd,
5546: \$conditions);
5547: };
5548: if (!$@) {
5549: &Reply($client, &escape($outcome.':'.$perm_reqd.':'. $conditions)."\n",
5550: $userinput);
5551: } else {
5552: &Failure($client,"unknown_cmd\n",$userinput);
5553: }
5554: return 1;
1.317 raeburn 5555: }
5556: ®ister_handler("autophotopermission",\&photo_permission_handler,0,1,0);
5557:
5558: #
5559: # Checks if student photo is available for a user in the domain, in the user's
5560: # directory (in /userfiles/internal/studentphoto.jpg).
5561: # Uses localstudentphoto:fetch() to ensure there is an up to date copy of
5562: # the student's photo.
5563:
5564: sub photo_check_handler {
5565: my ($cmd, $tail, $client) = @_;
5566: my $userinput = "$cmd:$tail";
5567: my ($udom,$uname,$pid) = split(/:/,$tail);
5568: $udom = &unescape($udom);
5569: $uname = &unescape($uname);
5570: $pid = &unescape($pid);
5571: my $path=&propath($udom,$uname).'/userfiles/internal/';
5572: if (!-e $path) {
5573: &mkpath($path);
5574: }
5575: my $response;
5576: my $result = &localstudentphoto::fetch($udom,$uname,$pid,\$response);
5577: $result .= ':'.$response;
5578: &Reply($client, &escape($result)."\n",$userinput);
1.320 albertel 5579: return 1;
1.317 raeburn 5580: }
5581: ®ister_handler("autophotocheck",\&photo_check_handler,0,1,0);
5582:
5583: #
5584: # Retrieve information from localenroll about whether to provide a button
5585: # for users who have enbled import of student photos to initiate an
5586: # update of photo files for registered students. Also include
5587: # comment to display alongside button.
5588:
5589: sub photo_choice_handler {
5590: my ($cmd, $tail, $client) = @_;
5591: my $userinput = "$cmd:$tail";
5592: my $cdom = &unescape($tail);
1.320 albertel 5593: my ($update,$comment);
5594: eval {
5595: local($SIG{__DIE__})='DEFAULT';
5596: ($update,$comment) = &localenroll::manager_photo_update($cdom);
5597: };
5598: if (!$@) {
5599: &Reply($client,&escape($update).':'.&escape($comment)."\n",$userinput);
5600: } else {
5601: &Failure($client,"unknown_cmd\n",$userinput);
5602: }
5603: return 1;
1.317 raeburn 5604: }
5605: ®ister_handler("autophotochoice",\&photo_choice_handler,0,1,0);
5606:
1.265 albertel 5607: #
5608: # Gets a student's photo to exist (in the correct image type) in the user's
5609: # directory.
5610: # Formal Parameters:
5611: # $cmd - The command request that got us dispatched.
5612: # $tail - A colon separated set of words that will be split into:
5613: # $domain - student's domain
5614: # $uname - student username
5615: # $type - image type desired
5616: # $client - The socket open on the client.
5617: # Returns:
5618: # 1 - continue processing.
1.317 raeburn 5619:
1.265 albertel 5620: sub student_photo_handler {
5621: my ($cmd, $tail, $client) = @_;
1.317 raeburn 5622: my ($domain,$uname,$ext,$type) = split(/:/, $tail);
1.265 albertel 5623:
1.317 raeburn 5624: my $path=&propath($domain,$uname). '/userfiles/internal/';
5625: my $filename = 'studentphoto.'.$ext;
5626: if ($type eq 'thumbnail') {
5627: $filename = 'studentphoto_tn.'.$ext;
5628: }
5629: if (-e $path.$filename) {
1.265 albertel 5630: &Reply($client,"ok\n","$cmd:$tail");
5631: return 1;
5632: }
5633: &mkpath($path);
1.317 raeburn 5634: my $file;
5635: if ($type eq 'thumbnail') {
1.320 albertel 5636: eval {
5637: local($SIG{__DIE__})='DEFAULT';
5638: $file=&localstudentphoto::fetch_thumbnail($domain,$uname);
5639: };
1.317 raeburn 5640: } else {
5641: $file=&localstudentphoto::fetch($domain,$uname);
5642: }
1.265 albertel 5643: if (!$file) {
5644: &Failure($client,"unavailable\n","$cmd:$tail");
5645: return 1;
5646: }
1.317 raeburn 5647: if (!-e $path.$filename) { &convert_photo($file,$path.$filename); }
5648: if (-e $path.$filename) {
1.265 albertel 5649: &Reply($client,"ok\n","$cmd:$tail");
5650: return 1;
5651: }
5652: &Failure($client,"unable_to_convert\n","$cmd:$tail");
5653: return 1;
5654: }
5655: ®ister_handler("studentphoto", \&student_photo_handler, 0, 1, 0);
1.246 foxr 5656:
1.361 raeburn 5657: sub inst_usertypes_handler {
5658: my ($cmd, $domain, $client) = @_;
5659: my $res;
5660: my $userinput = $cmd.":".$domain; # For logging purposes.
1.370 albertel 5661: my (%typeshash,@order,$result);
5662: eval {
5663: local($SIG{__DIE__})='DEFAULT';
5664: $result=&localenroll::inst_usertypes($domain,\%typeshash,\@order);
5665: };
5666: if ($result eq 'ok') {
1.361 raeburn 5667: if (keys(%typeshash) > 0) {
5668: foreach my $key (keys(%typeshash)) {
5669: $res.=&escape($key).'='.&escape($typeshash{$key}).'&';
5670: }
5671: }
5672: $res=~s/\&$//;
5673: $res .= ':';
5674: if (@order > 0) {
5675: foreach my $item (@order) {
5676: $res .= &escape($item).'&';
5677: }
5678: }
5679: $res=~s/\&$//;
5680: }
1.387 albertel 5681: &Reply($client, \$res, $userinput);
1.361 raeburn 5682: return 1;
5683: }
5684: ®ister_handler("inst_usertypes", \&inst_usertypes_handler, 0, 1, 0);
5685:
1.264 albertel 5686: # mkpath makes all directories for a file, expects an absolute path with a
5687: # file or a trailing / if just a dir is passed
5688: # returns 1 on success 0 on failure
5689: sub mkpath {
5690: my ($file)=@_;
5691: my @parts=split(/\//,$file,-1);
5692: my $now=$parts[0].'/'.$parts[1].'/'.$parts[2];
5693: for (my $i=3;$i<= ($#parts-1);$i++) {
1.265 albertel 5694: $now.='/'.$parts[$i];
1.264 albertel 5695: if (!-e $now) {
5696: if (!mkdir($now,0770)) { return 0; }
5697: }
5698: }
5699: return 1;
5700: }
5701:
1.207 foxr 5702: #---------------------------------------------------------------
5703: #
5704: # Getting, decoding and dispatching requests:
5705: #
5706: #
5707: # Get a Request:
5708: # Gets a Request message from the client. The transaction
5709: # is defined as a 'line' of text. We remove the new line
5710: # from the text line.
1.226 foxr 5711: #
1.211 albertel 5712: sub get_request {
1.207 foxr 5713: my $input = <$client>;
5714: chomp($input);
1.226 foxr 5715:
1.234 foxr 5716: &Debug("get_request: Request = $input\n");
1.207 foxr 5717:
5718: &status('Processing '.$clientname.':'.$input);
5719:
5720: return $input;
5721: }
1.212 foxr 5722: #---------------------------------------------------------------
5723: #
5724: # Process a request. This sub should shrink as each action
5725: # gets farmed out into a separat sub that is registered
5726: # with the dispatch hash.
5727: #
5728: # Parameters:
5729: # user_input - The request received from the client (lonc).
5730: # Returns:
5731: # true to keep processing, false if caller should exit.
5732: #
5733: sub process_request {
5734: my ($userinput) = @_; # Easier for now to break style than to
5735: # fix all the userinput -> user_input.
5736: my $wasenc = 0; # True if request was encrypted.
5737: # ------------------------------------------------------------ See if encrypted
1.322 albertel 5738: # for command
5739: # sethost:<server>
5740: # <command>:<args>
5741: # we just send it to the processor
5742: # for
5743: # sethost:<server>:<command>:<args>
5744: # we do the implict set host and then do the command
5745: if ($userinput =~ /^sethost:/) {
5746: (my $cmd,my $newid,$userinput) = split(':',$userinput,3);
5747: if (defined($userinput)) {
5748: &sethost("$cmd:$newid");
5749: } else {
5750: $userinput = "$cmd:$newid";
5751: }
5752: }
5753:
1.212 foxr 5754: if ($userinput =~ /^enc/) {
5755: $userinput = decipher($userinput);
5756: $wasenc=1;
5757: if(!$userinput) { # Cipher not defined.
1.251 foxr 5758: &Failure($client, "error: Encrypted data without negotated key\n");
1.212 foxr 5759: return 0;
5760: }
5761: }
5762: Debug("process_request: $userinput\n");
5763:
1.213 foxr 5764: #
5765: # The 'correct way' to add a command to lond is now to
5766: # write a sub to execute it and Add it to the command dispatch
5767: # hash via a call to register_handler.. The comments to that
5768: # sub should give you enough to go on to show how to do this
5769: # along with the examples that are building up as this code
5770: # is getting refactored. Until all branches of the
5771: # if/elseif monster below have been factored out into
5772: # separate procesor subs, if the dispatch hash is missing
5773: # the command keyword, we will fall through to the remainder
5774: # of the if/else chain below in order to keep this thing in
5775: # working order throughout the transmogrification.
5776:
5777: my ($command, $tail) = split(/:/, $userinput, 2);
5778: chomp($command);
5779: chomp($tail);
5780: $tail =~ s/(\r)//; # This helps people debugging with e.g. telnet.
1.214 foxr 5781: $command =~ s/(\r)//; # And this too for parameterless commands.
5782: if(!$tail) {
5783: $tail =""; # defined but blank.
5784: }
1.213 foxr 5785:
5786: &Debug("Command received: $command, encoded = $wasenc");
5787:
5788: if(defined $Dispatcher{$command}) {
5789:
5790: my $dispatch_info = $Dispatcher{$command};
5791: my $handler = $$dispatch_info[0];
5792: my $need_encode = $$dispatch_info[1];
5793: my $client_types = $$dispatch_info[2];
5794: Debug("Matched dispatch hash: mustencode: $need_encode "
5795: ."ClientType $client_types");
5796:
5797: # Validate the request:
5798:
5799: my $ok = 1;
5800: my $requesterprivs = 0;
5801: if(&isClient()) {
5802: $requesterprivs |= $CLIENT_OK;
5803: }
5804: if(&isManager()) {
5805: $requesterprivs |= $MANAGER_OK;
5806: }
5807: if($need_encode && (!$wasenc)) {
5808: Debug("Must encode but wasn't: $need_encode $wasenc");
5809: $ok = 0;
5810: }
5811: if(($client_types & $requesterprivs) == 0) {
5812: Debug("Client not privileged to do this operation");
5813: $ok = 0;
5814: }
5815:
5816: if($ok) {
5817: Debug("Dispatching to handler $command $tail");
5818: my $keep_going = &$handler($command, $tail, $client);
5819: return $keep_going;
5820: } else {
5821: Debug("Refusing to dispatch because client did not match requirements");
5822: Failure($client, "refused\n", $userinput);
5823: return 1;
5824: }
5825:
5826: }
5827:
1.262 foxr 5828: print $client "unknown_cmd\n";
1.212 foxr 5829: # -------------------------------------------------------------------- complete
5830: Debug("process_request - returning 1");
5831: return 1;
5832: }
1.207 foxr 5833: #
5834: # Decipher encoded traffic
5835: # Parameters:
5836: # input - Encoded data.
5837: # Returns:
5838: # Decoded data or undef if encryption key was not yet negotiated.
5839: # Implicit input:
5840: # cipher - This global holds the negotiated encryption key.
5841: #
1.211 albertel 5842: sub decipher {
1.207 foxr 5843: my ($input) = @_;
5844: my $output = '';
1.212 foxr 5845:
5846:
1.207 foxr 5847: if($cipher) {
5848: my($enc, $enclength, $encinput) = split(/:/, $input);
5849: for(my $encidx = 0; $encidx < length($encinput); $encidx += 16) {
5850: $output .=
5851: $cipher->decrypt(pack("H16", substr($encinput, $encidx, 16)));
5852: }
5853: return substr($output, 0, $enclength);
5854: } else {
5855: return undef;
5856: }
5857: }
5858:
5859: #
5860: # Register a command processor. This function is invoked to register a sub
5861: # to process a request. Once registered, the ProcessRequest sub can automatically
5862: # dispatch requests to an appropriate sub, and do the top level validity checking
5863: # as well:
5864: # - Is the keyword recognized.
5865: # - Is the proper client type attempting the request.
5866: # - Is the request encrypted if it has to be.
5867: # Parameters:
5868: # $request_name - Name of the request being registered.
5869: # This is the command request that will match
5870: # against the hash keywords to lookup the information
5871: # associated with the dispatch information.
5872: # $procedure - Reference to a sub to call to process the request.
5873: # All subs get called as follows:
5874: # Procedure($cmd, $tail, $replyfd, $key)
5875: # $cmd - the actual keyword that invoked us.
5876: # $tail - the tail of the request that invoked us.
5877: # $replyfd- File descriptor connected to the client
5878: # $must_encode - True if the request must be encoded to be good.
5879: # $client_ok - True if it's ok for a client to request this.
5880: # $manager_ok - True if it's ok for a manager to request this.
5881: # Side effects:
5882: # - On success, the Dispatcher hash has an entry added for the key $RequestName
5883: # - On failure, the program will die as it's a bad internal bug to try to
5884: # register a duplicate command handler.
5885: #
1.211 albertel 5886: sub register_handler {
1.212 foxr 5887: my ($request_name,$procedure,$must_encode, $client_ok,$manager_ok) = @_;
1.207 foxr 5888:
5889: # Don't allow duplication#
5890:
5891: if (defined $Dispatcher{$request_name}) {
5892: die "Attempting to define a duplicate request handler for $request_name\n";
5893: }
5894: # Build the client type mask:
5895:
5896: my $client_type_mask = 0;
5897: if($client_ok) {
5898: $client_type_mask |= $CLIENT_OK;
5899: }
5900: if($manager_ok) {
5901: $client_type_mask |= $MANAGER_OK;
5902: }
5903:
5904: # Enter the hash:
5905:
5906: my @entry = ($procedure, $must_encode, $client_type_mask);
5907:
5908: $Dispatcher{$request_name} = \@entry;
5909:
5910: }
5911:
5912:
5913: #------------------------------------------------------------------
5914:
5915:
5916:
5917:
1.141 foxr 5918: #
1.96 foxr 5919: # Convert an error return code from lcpasswd to a string value.
5920: #
5921: sub lcpasswdstrerror {
5922: my $ErrorCode = shift;
1.97 foxr 5923: if(($ErrorCode < 0) || ($ErrorCode > $lastpwderror)) {
1.96 foxr 5924: return "lcpasswd Unrecognized error return value ".$ErrorCode;
5925: } else {
1.98 foxr 5926: return $passwderrors[$ErrorCode];
1.96 foxr 5927: }
5928: }
5929:
1.97 foxr 5930: #
5931: # Convert an error return code from lcuseradd to a string value:
5932: #
5933: sub lcuseraddstrerror {
5934: my $ErrorCode = shift;
5935: if(($ErrorCode < 0) || ($ErrorCode > $lastadderror)) {
5936: return "lcuseradd - Unrecognized error code: ".$ErrorCode;
5937: } else {
1.98 foxr 5938: return $adderrors[$ErrorCode];
1.97 foxr 5939: }
5940: }
5941:
1.23 harris41 5942: # grabs exception and records it to log before exiting
5943: sub catchexception {
1.27 albertel 5944: my ($error)=@_;
1.25 www 5945: $SIG{'QUIT'}='DEFAULT';
5946: $SIG{__DIE__}='DEFAULT';
1.165 albertel 5947: &status("Catching exception");
1.190 albertel 5948: &logthis("<font color='red'>CRITICAL: "
1.373 albertel 5949: ."ABNORMAL EXIT. Child $$ for server ".$perlvar{'lonHostID'}." died through "
1.27 albertel 5950: ."a crash with this error msg->[$error]</font>");
1.57 www 5951: &logthis('Famous last words: '.$status.' - '.$lastlog);
1.27 albertel 5952: if ($client) { print $client "error: $error\n"; }
1.59 www 5953: $server->close();
1.27 albertel 5954: die($error);
1.23 harris41 5955: }
1.63 www 5956: sub timeout {
1.165 albertel 5957: &status("Handling Timeout");
1.190 albertel 5958: &logthis("<font color='red'>CRITICAL: TIME OUT ".$$."</font>");
1.63 www 5959: &catchexception('Timeout');
5960: }
1.22 harris41 5961: # -------------------------------- Set signal handlers to record abnormal exits
5962:
1.226 foxr 5963:
1.22 harris41 5964: $SIG{'QUIT'}=\&catchexception;
5965: $SIG{__DIE__}=\&catchexception;
5966:
1.81 matthew 5967: # ---------------------------------- Read loncapa_apache.conf and loncapa.conf
1.95 harris41 5968: &status("Read loncapa.conf and loncapa_apache.conf");
5969: my $perlvarref=LONCAPA::Configuration::read_conf('loncapa.conf');
1.141 foxr 5970: %perlvar=%{$perlvarref};
1.80 harris41 5971: undef $perlvarref;
1.19 www 5972:
1.35 harris41 5973: # ----------------------------- Make sure this process is running from user=www
5974: my $wwwid=getpwnam('www');
5975: if ($wwwid!=$<) {
1.134 albertel 5976: my $emailto="$perlvar{'lonAdmEMail'},$perlvar{'lonSysEMail'}";
5977: my $subj="LON: $currenthostid User ID mismatch";
1.37 harris41 5978: system("echo 'User ID mismatch. lond must be run as user www.' |\
1.35 harris41 5979: mailto $emailto -s '$subj' > /dev/null");
5980: exit 1;
5981: }
5982:
1.19 www 5983: # --------------------------------------------- Check if other instance running
5984:
5985: my $pidfile="$perlvar{'lonDaemons'}/logs/lond.pid";
5986:
5987: if (-e $pidfile) {
5988: my $lfh=IO::File->new("$pidfile");
5989: my $pide=<$lfh>;
5990: chomp($pide);
1.29 harris41 5991: if (kill 0 => $pide) { die "already running"; }
1.19 www 5992: }
1.1 albertel 5993:
5994: # ------------------------------------------------------------- Read hosts file
5995:
5996:
5997:
5998: # establish SERVER socket, bind and listen.
5999: $server = IO::Socket::INET->new(LocalPort => $perlvar{'londPort'},
6000: Type => SOCK_STREAM,
6001: Proto => 'tcp',
1.469 ! foxr 6002: ReuseAddr => 1,
1.1 albertel 6003: Listen => 10 )
1.29 harris41 6004: or die "making socket: $@\n";
1.1 albertel 6005:
6006: # --------------------------------------------------------- Do global variables
6007:
6008: # global variables
6009:
1.134 albertel 6010: my %children = (); # keys are current child process IDs
1.1 albertel 6011:
6012: sub REAPER { # takes care of dead children
6013: $SIG{CHLD} = \&REAPER;
1.165 albertel 6014: &status("Handling child death");
1.178 foxr 6015: my $pid;
6016: do {
6017: $pid = waitpid(-1,&WNOHANG());
6018: if (defined($children{$pid})) {
6019: &logthis("Child $pid died");
6020: delete($children{$pid});
1.183 albertel 6021: } elsif ($pid > 0) {
1.178 foxr 6022: &logthis("Unknown Child $pid died");
6023: }
6024: } while ( $pid > 0 );
6025: foreach my $child (keys(%children)) {
6026: $pid = waitpid($child,&WNOHANG());
6027: if ($pid > 0) {
6028: &logthis("Child $child - $pid looks like we missed it's death");
6029: delete($children{$pid});
6030: }
1.176 albertel 6031: }
1.165 albertel 6032: &status("Finished Handling child death");
1.1 albertel 6033: }
6034:
6035: sub HUNTSMAN { # signal handler for SIGINT
1.165 albertel 6036: &status("Killing children (INT)");
1.1 albertel 6037: local($SIG{CHLD}) = 'IGNORE'; # we're going to kill our children
6038: kill 'INT' => keys %children;
1.59 www 6039: &logthis("Free socket: ".shutdown($server,2)); # free up socket
1.1 albertel 6040: my $execdir=$perlvar{'lonDaemons'};
6041: unlink("$execdir/logs/lond.pid");
1.190 albertel 6042: &logthis("<font color='red'>CRITICAL: Shutting down</font>");
1.165 albertel 6043: &status("Done killing children");
1.1 albertel 6044: exit; # clean up with dignity
6045: }
6046:
6047: sub HUPSMAN { # signal handler for SIGHUP
6048: local($SIG{CHLD}) = 'IGNORE'; # we're going to kill our children
1.165 albertel 6049: &status("Killing children for restart (HUP)");
1.1 albertel 6050: kill 'INT' => keys %children;
1.59 www 6051: &logthis("Free socket: ".shutdown($server,2)); # free up socket
1.190 albertel 6052: &logthis("<font color='red'>CRITICAL: Restarting</font>");
1.134 albertel 6053: my $execdir=$perlvar{'lonDaemons'};
1.30 harris41 6054: unlink("$execdir/logs/lond.pid");
1.165 albertel 6055: &status("Restarting self (HUP)");
1.1 albertel 6056: exec("$execdir/lond"); # here we go again
6057: }
6058:
1.144 foxr 6059: #
1.148 foxr 6060: # Reload the Apache daemon's state.
1.150 foxr 6061: # This is done by invoking /home/httpd/perl/apachereload
6062: # a setuid perl script that can be root for us to do this job.
1.148 foxr 6063: #
6064: sub ReloadApache {
1.150 foxr 6065: my $execdir = $perlvar{'lonDaemons'};
6066: my $script = $execdir."/apachereload";
6067: system($script);
1.148 foxr 6068: }
6069:
6070: #
1.144 foxr 6071: # Called in response to a USR2 signal.
6072: # - Reread hosts.tab
6073: # - All children connected to hosts that were removed from hosts.tab
6074: # are killed via SIGINT
6075: # - All children connected to previously existing hosts are sent SIGUSR1
6076: # - Our internal hosts hash is updated to reflect the new contents of
6077: # hosts.tab causing connections from hosts added to hosts.tab to
6078: # now be honored.
6079: #
6080: sub UpdateHosts {
1.165 albertel 6081: &status("Reload hosts.tab");
1.147 foxr 6082: logthis('<font color="blue"> Updating connections </font>');
1.148 foxr 6083: #
6084: # The %children hash has the set of IP's we currently have children
6085: # on. These need to be matched against records in the hosts.tab
6086: # Any ip's no longer in the table get killed off they correspond to
6087: # either dropped or changed hosts. Note that the re-read of the table
6088: # will take care of new and changed hosts as connections come into being.
6089:
1.371 albertel 6090: &Apache::lonnet::reset_hosts_info();
1.148 foxr 6091:
1.368 albertel 6092: foreach my $child (keys(%children)) {
1.148 foxr 6093: my $childip = $children{$child};
1.374 albertel 6094: if ($childip ne '127.0.0.1'
6095: && !defined(&Apache::lonnet::get_hosts_from_ip($childip))) {
1.149 foxr 6096: logthis('<font color="blue"> UpdateHosts killing child '
6097: ." $child for ip $childip </font>");
1.148 foxr 6098: kill('INT', $child);
1.149 foxr 6099: } else {
6100: logthis('<font color="green"> keeping child for ip '
6101: ." $childip (pid=$child) </font>");
1.148 foxr 6102: }
6103: }
6104: ReloadApache;
1.165 albertel 6105: &status("Finished reloading hosts.tab");
1.144 foxr 6106: }
6107:
1.148 foxr 6108:
1.57 www 6109: sub checkchildren {
1.165 albertel 6110: &status("Checking on the children (sending signals)");
1.57 www 6111: &initnewstatus();
6112: &logstatus();
6113: &logthis('Going to check on the children');
1.134 albertel 6114: my $docdir=$perlvar{'lonDocRoot'};
1.61 harris41 6115: foreach (sort keys %children) {
1.221 albertel 6116: #sleep 1;
1.57 www 6117: unless (kill 'USR1' => $_) {
6118: &logthis ('Child '.$_.' is dead');
6119: &logstatus($$.' is dead');
1.221 albertel 6120: delete($children{$_});
1.57 www 6121: }
1.61 harris41 6122: }
1.63 www 6123: sleep 5;
1.212 foxr 6124: $SIG{ALRM} = sub { Debug("timeout");
6125: die "timeout"; };
1.113 albertel 6126: $SIG{__DIE__} = 'DEFAULT';
1.165 albertel 6127: &status("Checking on the children (waiting for reports)");
1.63 www 6128: foreach (sort keys %children) {
6129: unless (-e "$docdir/lon-status/londchld/$_.txt") {
1.113 albertel 6130: eval {
6131: alarm(300);
1.63 www 6132: &logthis('Child '.$_.' did not respond');
1.67 albertel 6133: kill 9 => $_;
1.131 albertel 6134: #$emailto="$perlvar{'lonAdmEMail'},$perlvar{'lonSysEMail'}";
6135: #$subj="LON: $currenthostid killed lond process $_";
6136: #my $result=`echo 'Killed lond process $_.' | mailto $emailto -s '$subj' > /dev/null`;
6137: #$execdir=$perlvar{'lonDaemons'};
6138: #$result=`/bin/cp $execdir/logs/lond.log $execdir/logs/lond.log.$_`;
1.221 albertel 6139: delete($children{$_});
1.113 albertel 6140: alarm(0);
6141: }
1.63 www 6142: }
6143: }
1.113 albertel 6144: $SIG{ALRM} = 'DEFAULT';
1.155 albertel 6145: $SIG{__DIE__} = \&catchexception;
1.165 albertel 6146: &status("Finished checking children");
1.221 albertel 6147: &logthis('Finished Checking children');
1.57 www 6148: }
6149:
1.1 albertel 6150: # --------------------------------------------------------------------- Logging
6151:
6152: sub logthis {
6153: my $message=shift;
6154: my $execdir=$perlvar{'lonDaemons'};
6155: my $fh=IO::File->new(">>$execdir/logs/lond.log");
6156: my $now=time;
6157: my $local=localtime($now);
1.58 www 6158: $lastlog=$local.': '.$message;
1.1 albertel 6159: print $fh "$local ($$): $message\n";
6160: }
6161:
1.77 foxr 6162: # ------------------------- Conditional log if $DEBUG true.
6163: sub Debug {
6164: my $message = shift;
6165: if($DEBUG) {
6166: &logthis($message);
6167: }
6168: }
1.161 foxr 6169:
6170: #
6171: # Sub to do replies to client.. this gives a hook for some
6172: # debug tracing too:
6173: # Parameters:
6174: # fd - File open on client.
6175: # reply - Text to send to client.
6176: # request - Original request from client.
6177: #
6178: sub Reply {
1.192 foxr 6179: my ($fd, $reply, $request) = @_;
1.387 albertel 6180: if (ref($reply)) {
6181: print $fd $$reply;
6182: print $fd "\n";
6183: if ($DEBUG) { Debug("Request was $request Reply was $$reply"); }
6184: } else {
6185: print $fd $reply;
6186: if ($DEBUG) { Debug("Request was $request Reply was $reply"); }
6187: }
1.212 foxr 6188: $Transactions++;
6189: }
6190:
6191:
6192: #
6193: # Sub to report a failure.
6194: # This function:
6195: # - Increments the failure statistic counters.
6196: # - Invokes Reply to send the error message to the client.
6197: # Parameters:
6198: # fd - File descriptor open on the client
6199: # reply - Reply text to emit.
6200: # request - The original request message (used by Reply
6201: # to debug if that's enabled.
6202: # Implicit outputs:
6203: # $Failures- The number of failures is incremented.
6204: # Reply (invoked here) sends a message to the
6205: # client:
6206: #
6207: sub Failure {
6208: my $fd = shift;
6209: my $reply = shift;
6210: my $request = shift;
6211:
6212: $Failures++;
6213: Reply($fd, $reply, $request); # That's simple eh?
1.161 foxr 6214: }
1.57 www 6215: # ------------------------------------------------------------------ Log status
6216:
6217: sub logstatus {
1.178 foxr 6218: &status("Doing logging");
6219: my $docdir=$perlvar{'lonDocRoot'};
6220: {
6221: my $fh=IO::File->new(">$docdir/lon-status/londchld/$$.txt");
1.200 matthew 6222: print $fh $status."\n".$lastlog."\n".time."\n$keymode";
1.178 foxr 6223: $fh->close();
6224: }
1.221 albertel 6225: &status("Finished $$.txt");
6226: {
6227: open(LOG,">>$docdir/lon-status/londstatus.txt");
6228: flock(LOG,LOCK_EX);
6229: print LOG $$."\t".$clientname."\t".$currenthostid."\t"
6230: .$status."\t".$lastlog."\t $keymode\n";
1.275 albertel 6231: flock(LOG,LOCK_UN);
1.221 albertel 6232: close(LOG);
6233: }
1.178 foxr 6234: &status("Finished logging");
1.57 www 6235: }
6236:
6237: sub initnewstatus {
6238: my $docdir=$perlvar{'lonDocRoot'};
6239: my $fh=IO::File->new(">$docdir/lon-status/londstatus.txt");
1.460 foxr 6240: my $now=time();
1.57 www 6241: my $local=localtime($now);
6242: print $fh "LOND status $local - parent $$\n\n";
1.64 www 6243: opendir(DIR,"$docdir/lon-status/londchld");
1.134 albertel 6244: while (my $filename=readdir(DIR)) {
1.64 www 6245: unlink("$docdir/lon-status/londchld/$filename");
6246: }
6247: closedir(DIR);
1.57 www 6248: }
6249:
6250: # -------------------------------------------------------------- Status setting
6251:
6252: sub status {
6253: my $what=shift;
6254: my $now=time;
6255: my $local=localtime($now);
1.178 foxr 6256: $status=$local.': '.$what;
6257: $0='lond: '.$what.' '.$local;
1.57 www 6258: }
1.11 www 6259:
1.13 www 6260: # -------------------------------------------------------------- Talk to lonsql
6261:
1.234 foxr 6262: sub sql_reply {
1.12 harris41 6263: my ($cmd)=@_;
1.234 foxr 6264: my $answer=&sub_sql_reply($cmd);
6265: if ($answer eq 'con_lost') { $answer=&sub_sql_reply($cmd); }
1.12 harris41 6266: return $answer;
6267: }
6268:
1.234 foxr 6269: sub sub_sql_reply {
1.12 harris41 6270: my ($cmd)=@_;
6271: my $unixsock="mysqlsock";
6272: my $peerfile="$perlvar{'lonSockDir'}/$unixsock";
6273: my $sclient=IO::Socket::UNIX->new(Peer =>"$peerfile",
6274: Type => SOCK_STREAM,
6275: Timeout => 10)
6276: or return "con_lost";
1.319 www 6277: print $sclient "$cmd:$currentdomainid\n";
1.12 harris41 6278: my $answer=<$sclient>;
6279: chomp($answer);
6280: if (!$answer) { $answer="con_lost"; }
6281: return $answer;
6282: }
6283:
1.1 albertel 6284: # --------------------------------------- Is this the home server of an author?
1.11 www 6285:
1.1 albertel 6286: sub ishome {
6287: my $author=shift;
6288: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
6289: my ($udom,$uname)=split(/\//,$author);
6290: my $proname=propath($udom,$uname);
6291: if (-e $proname) {
6292: return 'owner';
6293: } else {
6294: return 'not_owner';
6295: }
6296: }
6297:
6298: # ======================================================= Continue main program
6299: # ---------------------------------------------------- Fork once and dissociate
6300:
1.134 albertel 6301: my $fpid=fork;
1.1 albertel 6302: exit if $fpid;
1.29 harris41 6303: die "Couldn't fork: $!" unless defined ($fpid);
1.1 albertel 6304:
1.29 harris41 6305: POSIX::setsid() or die "Can't start new session: $!";
1.1 albertel 6306:
6307: # ------------------------------------------------------- Write our PID on disk
6308:
1.134 albertel 6309: my $execdir=$perlvar{'lonDaemons'};
1.1 albertel 6310: open (PIDSAVE,">$execdir/logs/lond.pid");
6311: print PIDSAVE "$$\n";
6312: close(PIDSAVE);
1.190 albertel 6313: &logthis("<font color='red'>CRITICAL: ---------- Starting ----------</font>");
1.57 www 6314: &status('Starting');
1.1 albertel 6315:
1.106 foxr 6316:
1.1 albertel 6317:
6318: # ----------------------------------------------------- Install signal handlers
6319:
1.57 www 6320:
1.1 albertel 6321: $SIG{CHLD} = \&REAPER;
6322: $SIG{INT} = $SIG{TERM} = \&HUNTSMAN;
6323: $SIG{HUP} = \&HUPSMAN;
1.57 www 6324: $SIG{USR1} = \&checkchildren;
1.144 foxr 6325: $SIG{USR2} = \&UpdateHosts;
1.106 foxr 6326:
1.148 foxr 6327: # Read the host hashes:
1.368 albertel 6328: &Apache::lonnet::load_hosts_tab();
1.447 raeburn 6329: my %iphost = &Apache::lonnet::get_iphost(1);
1.106 foxr 6330:
1.286 albertel 6331: my $dist=`$perlvar{'lonDaemons'}/distprobe`;
6332:
1.106 foxr 6333: # --------------------------------------------------------------
6334: # Accept connections. When a connection comes in, it is validated
6335: # and if good, a child process is created to process transactions
6336: # along the connection.
6337:
1.1 albertel 6338: while (1) {
1.165 albertel 6339: &status('Starting accept');
1.106 foxr 6340: $client = $server->accept() or next;
1.165 albertel 6341: &status('Accepted '.$client.' off to spawn');
1.386 albertel 6342: make_new_child($client);
1.165 albertel 6343: &status('Finished spawning');
1.1 albertel 6344: }
6345:
1.212 foxr 6346: sub make_new_child {
6347: my $pid;
6348: # my $cipher; # Now global
6349: my $sigset;
1.178 foxr 6350:
1.212 foxr 6351: $client = shift;
6352: &status('Starting new child '.$client);
6353: &logthis('<font color="green"> Attempting to start child ('.$client.
6354: ")</font>");
6355: # block signal for fork
6356: $sigset = POSIX::SigSet->new(SIGINT);
6357: sigprocmask(SIG_BLOCK, $sigset)
6358: or die "Can't block SIGINT for fork: $!\n";
1.178 foxr 6359:
1.212 foxr 6360: die "fork: $!" unless defined ($pid = fork);
1.178 foxr 6361:
1.212 foxr 6362: $client->sockopt(SO_KEEPALIVE, 1); # Enable monitoring of
6363: # connection liveness.
1.178 foxr 6364:
1.212 foxr 6365: #
6366: # Figure out who we're talking to so we can record the peer in
6367: # the pid hash.
6368: #
6369: my $caller = getpeername($client);
6370: my ($port,$iaddr);
6371: if (defined($caller) && length($caller) > 0) {
6372: ($port,$iaddr)=unpack_sockaddr_in($caller);
6373: } else {
6374: &logthis("Unable to determine who caller was, getpeername returned nothing");
6375: }
6376: if (defined($iaddr)) {
6377: $clientip = inet_ntoa($iaddr);
6378: Debug("Connected with $clientip");
6379: } else {
6380: &logthis("Unable to determine clientip");
6381: $clientip='Unavailable';
6382: }
6383:
6384: if ($pid) {
6385: # Parent records the child's birth and returns.
6386: sigprocmask(SIG_UNBLOCK, $sigset)
6387: or die "Can't unblock SIGINT for fork: $!\n";
6388: $children{$pid} = $clientip;
6389: &status('Started child '.$pid);
1.462 foxr 6390: close($client);
1.212 foxr 6391: return;
6392: } else {
6393: # Child can *not* return from this subroutine.
6394: $SIG{INT} = 'DEFAULT'; # make SIGINT kill us as it did before
6395: $SIG{CHLD} = 'DEFAULT'; #make this default so that pwauth returns
6396: #don't get intercepted
6397: $SIG{USR1}= \&logstatus;
6398: $SIG{ALRM}= \&timeout;
1.468 foxr 6399: #
6400: # Block sigpipe as it gets thrownon socket disconnect and we want to
6401: # deal with that as a read faiure instead.
6402: #
6403: my $blockset = POSIX::SigSet->new(SIGPIPE);
6404: sigprocmask(SIG_BLOCK, $blockset);
6405:
1.212 foxr 6406: $lastlog='Forked ';
6407: $status='Forked';
1.178 foxr 6408:
1.212 foxr 6409: # unblock signals
6410: sigprocmask(SIG_UNBLOCK, $sigset)
6411: or die "Can't unblock SIGINT for fork: $!\n";
1.178 foxr 6412:
1.212 foxr 6413: # my $tmpsnum=0; # Now global
6414: #---------------------------------------------------- kerberos 5 initialization
6415: &Authen::Krb5::init_context();
1.359 raeburn 6416: unless (($dist eq 'fedora5') || ($dist eq 'fedora4') ||
6417: ($dist eq 'fedora6') || ($dist eq 'suse9.3')) {
1.286 albertel 6418: &Authen::Krb5::init_ets();
6419: }
1.209 albertel 6420:
1.212 foxr 6421: &status('Accepted connection');
6422: # =============================================================================
6423: # do something with the connection
6424: # -----------------------------------------------------------------------------
6425: # see if we know client and 'check' for spoof IP by ineffective challenge
1.178 foxr 6426:
1.278 albertel 6427: my $outsideip=$clientip;
6428: if ($clientip eq '127.0.0.1') {
1.368 albertel 6429: $outsideip=&Apache::lonnet::get_host_ip($perlvar{'lonHostID'});
1.278 albertel 6430: }
1.412 foxr 6431: &ReadManagerTable();
1.368 albertel 6432: my $clientrec=defined(&Apache::lonnet::get_hosts_from_ip($outsideip));
1.278 albertel 6433: my $ismanager=($managers{$outsideip} ne undef);
1.432 raeburn 6434: $clientname = "[unknown]";
1.212 foxr 6435: if($clientrec) { # Establish client type.
6436: $ConnectionType = "client";
1.368 albertel 6437: $clientname = (&Apache::lonnet::get_hosts_from_ip($outsideip))[-1];
1.212 foxr 6438: if($ismanager) {
6439: $ConnectionType = "both";
6440: }
6441: } else {
6442: $ConnectionType = "manager";
1.278 albertel 6443: $clientname = $managers{$outsideip};
1.212 foxr 6444: }
6445: my $clientok;
1.178 foxr 6446:
1.212 foxr 6447: if ($clientrec || $ismanager) {
6448: &status("Waiting for init from $clientip $clientname");
6449: &logthis('<font color="yellow">INFO: Connection, '.
6450: $clientip.
6451: " ($clientname) connection type = $ConnectionType </font>" );
6452: &status("Connecting $clientip ($clientname))");
6453: my $remotereq=<$client>;
6454: chomp($remotereq);
6455: Debug("Got init: $remotereq");
1.337 albertel 6456:
1.212 foxr 6457: if ($remotereq =~ /^init/) {
6458: &sethost("sethost:$perlvar{'lonHostID'}");
6459: #
6460: # If the remote is attempting a local init... give that a try:
6461: #
1.432 raeburn 6462: (my $i, my $inittype, $clientversion) = split(/:/, $remotereq);
1.209 albertel 6463:
1.212 foxr 6464: # If the connection type is ssl, but I didn't get my
6465: # certificate files yet, then I'll drop back to
6466: # insecure (if allowed).
6467:
6468: if($inittype eq "ssl") {
6469: my ($ca, $cert) = lonssl::CertificateFile;
6470: my $kfile = lonssl::KeyFile;
6471: if((!$ca) ||
6472: (!$cert) ||
6473: (!$kfile)) {
6474: $inittype = ""; # This forces insecure attempt.
6475: &logthis("<font color=\"blue\"> Certificates not "
6476: ."installed -- trying insecure auth</font>");
1.224 foxr 6477: } else { # SSL certificates are in place so
1.212 foxr 6478: } # Leave the inittype alone.
6479: }
6480:
6481: if($inittype eq "local") {
1.432 raeburn 6482: $clientversion = $perlvar{'lonVersion'};
1.212 foxr 6483: my $key = LocalConnection($client, $remotereq);
6484: if($key) {
6485: Debug("Got local key $key");
6486: $clientok = 1;
6487: my $cipherkey = pack("H32", $key);
6488: $cipher = new IDEA($cipherkey);
6489: print $client "ok:local\n";
1.442 www 6490: &logthis('<font color="green">'
1.212 foxr 6491: . "Successful local authentication </font>");
6492: $keymode = "local"
1.178 foxr 6493: } else {
1.212 foxr 6494: Debug("Failed to get local key");
6495: $clientok = 0;
6496: shutdown($client, 3);
6497: close $client;
1.178 foxr 6498: }
1.212 foxr 6499: } elsif ($inittype eq "ssl") {
6500: my $key = SSLConnection($client);
6501: if ($key) {
6502: $clientok = 1;
6503: my $cipherkey = pack("H32", $key);
6504: $cipher = new IDEA($cipherkey);
6505: &logthis('<font color="green">'
6506: ."Successfull ssl authentication with $clientname </font>");
6507: $keymode = "ssl";
6508:
1.178 foxr 6509: } else {
1.212 foxr 6510: $clientok = 0;
6511: close $client;
1.178 foxr 6512: }
1.212 foxr 6513:
6514: } else {
6515: my $ok = InsecureConnection($client);
6516: if($ok) {
6517: $clientok = 1;
6518: &logthis('<font color="green">'
6519: ."Successful insecure authentication with $clientname </font>");
6520: print $client "ok\n";
6521: $keymode = "insecure";
1.178 foxr 6522: } else {
1.212 foxr 6523: &logthis('<font color="yellow">'
6524: ."Attempted insecure connection disallowed </font>");
6525: close $client;
6526: $clientok = 0;
1.178 foxr 6527:
6528: }
6529: }
1.212 foxr 6530: } else {
6531: &logthis(
6532: "<font color='blue'>WARNING: "
6533: ."$clientip failed to initialize: >$remotereq< </font>");
6534: &status('No init '.$clientip);
6535: }
6536:
6537: } else {
6538: &logthis(
6539: "<font color='blue'>WARNING: Unknown client $clientip</font>");
6540: &status('Hung up on '.$clientip);
6541: }
6542:
6543: if ($clientok) {
6544: # ---------------- New known client connecting, could mean machine online again
1.368 albertel 6545: if (&Apache::lonnet::get_host_ip($currenthostid) ne $clientip
1.367 albertel 6546: && $clientip ne '127.0.0.1') {
1.375 albertel 6547: &Apache::lonnet::reconlonc($clientname);
1.212 foxr 6548: }
6549: &logthis("<font color='green'>Established connection: $clientname</font>");
6550: &status('Will listen to '.$clientname);
6551: # ------------------------------------------------------------ Process requests
6552: my $keep_going = 1;
6553: my $user_input;
1.448 raeburn 6554: my $clienthost = &Apache::lonnet::hostname($clientname);
6555: my $clientserverhomeID = &Apache::lonnet::get_server_homeID($clienthost);
6556: $clienthomedom = &Apache::lonnet::host_domain($clientserverhomeID);
1.212 foxr 6557: while(($user_input = get_request) && $keep_going) {
6558: alarm(120);
6559: Debug("Main: Got $user_input\n");
6560: $keep_going = &process_request($user_input);
1.178 foxr 6561: alarm(0);
1.212 foxr 6562: &status('Listening to '.$clientname." ($keymode)");
1.161 foxr 6563: }
1.212 foxr 6564:
1.59 www 6565: # --------------------------------------------- client unknown or fishy, refuse
1.212 foxr 6566: } else {
1.161 foxr 6567: print $client "refused\n";
6568: $client->close();
1.190 albertel 6569: &logthis("<font color='blue'>WARNING: "
1.161 foxr 6570: ."Rejected client $clientip, closing connection</font>");
6571: }
1.212 foxr 6572: }
1.161 foxr 6573:
1.1 albertel 6574: # =============================================================================
1.161 foxr 6575:
1.190 albertel 6576: &logthis("<font color='red'>CRITICAL: "
1.161 foxr 6577: ."Disconnect from $clientip ($clientname)</font>");
6578:
6579:
6580: # this exit is VERY important, otherwise the child will become
6581: # a producer of more and more children, forking yourself into
6582: # process death.
6583: exit;
1.106 foxr 6584:
1.78 foxr 6585: }
1.261 foxr 6586: #
6587: # Determine if a user is an author for the indicated domain.
6588: #
6589: # Parameters:
6590: # domain - domain to check in .
6591: # user - Name of user to check.
6592: #
6593: # Return:
6594: # 1 - User is an author for domain.
6595: # 0 - User is not an author for domain.
6596: sub is_author {
6597: my ($domain, $user) = @_;
6598:
6599: &Debug("is_author: $user @ $domain");
6600:
6601: my $hashref = &tie_user_hash($domain, $user, "roles",
6602: &GDBM_READER());
6603:
6604: # Author role should show up as a key /domain/_au
1.78 foxr 6605:
1.321 albertel 6606: my $key = "/$domain/_au";
6607: my $value;
6608: if (defined($hashref)) {
6609: $value = $hashref->{$key};
6610: }
1.78 foxr 6611:
1.261 foxr 6612: if(defined($value)) {
6613: &Debug("$user @ $domain is an author");
6614: }
6615:
6616: return defined($value);
6617: }
1.78 foxr 6618: #
6619: # Checks to see if the input roleput request was to set
6620: # an author role. If so, invokes the lchtmldir script to set
6621: # up a correct public_html
6622: # Parameters:
6623: # request - The request sent to the rolesput subchunk.
6624: # We're looking for /domain/_au
6625: # domain - The domain in which the user is having roles doctored.
6626: # user - Name of the user for which the role is being put.
6627: # authtype - The authentication type associated with the user.
6628: #
1.289 albertel 6629: sub manage_permissions {
1.192 foxr 6630: my ($request, $domain, $user, $authtype) = @_;
1.78 foxr 6631:
1.261 foxr 6632: &Debug("manage_permissions: $request $domain $user $authtype");
6633:
1.78 foxr 6634: # See if the request is of the form /$domain/_au
1.289 albertel 6635: if($request =~ /^(\/\Q$domain\E\/_au)$/) { # It's an author rolesput...
1.78 foxr 6636: my $execdir = $perlvar{'lonDaemons'};
6637: my $userhome= "/home/$user" ;
1.134 albertel 6638: &logthis("system $execdir/lchtmldir $userhome $user $authtype");
1.261 foxr 6639: &Debug("Setting homedir permissions for $userhome");
1.78 foxr 6640: system("$execdir/lchtmldir $userhome $user $authtype");
6641: }
6642: }
1.222 foxr 6643:
6644:
6645: #
6646: # Return the full path of a user password file, whether it exists or not.
6647: # Parameters:
6648: # domain - Domain in which the password file lives.
6649: # user - name of the user.
6650: # Returns:
6651: # Full passwd path:
6652: #
6653: sub password_path {
6654: my ($domain, $user) = @_;
1.264 albertel 6655: return &propath($domain, $user).'/passwd';
1.222 foxr 6656: }
6657:
6658: # Password Filename
6659: # Returns the path to a passwd file given domain and user... only if
6660: # it exists.
6661: # Parameters:
6662: # domain - Domain in which to search.
6663: # user - username.
6664: # Returns:
6665: # - If the password file exists returns its path.
6666: # - If the password file does not exist, returns undefined.
6667: #
6668: sub password_filename {
6669: my ($domain, $user) = @_;
6670:
6671: Debug ("PasswordFilename called: dom = $domain user = $user");
6672:
6673: my $path = &password_path($domain, $user);
6674: Debug("PasswordFilename got path: $path");
6675: if(-e $path) {
6676: return $path;
6677: } else {
6678: return undef;
6679: }
6680: }
6681:
6682: #
6683: # Rewrite the contents of the user's passwd file.
6684: # Parameters:
6685: # domain - domain of the user.
6686: # name - User's name.
6687: # contents - New contents of the file.
6688: # Returns:
6689: # 0 - Failed.
6690: # 1 - Success.
6691: #
6692: sub rewrite_password_file {
6693: my ($domain, $user, $contents) = @_;
6694:
6695: my $file = &password_filename($domain, $user);
6696: if (defined $file) {
6697: my $pf = IO::File->new(">$file");
6698: if($pf) {
6699: print $pf "$contents\n";
6700: return 1;
6701: } else {
6702: return 0;
6703: }
6704: } else {
6705: return 0;
6706: }
6707:
6708: }
6709:
1.78 foxr 6710: #
1.222 foxr 6711: # get_auth_type - Determines the authorization type of a user in a domain.
1.78 foxr 6712:
6713: # Returns the authorization type or nouser if there is no such user.
6714: #
1.436 raeburn 6715: sub get_auth_type {
1.192 foxr 6716: my ($domain, $user) = @_;
1.78 foxr 6717:
1.222 foxr 6718: Debug("get_auth_type( $domain, $user ) \n");
1.78 foxr 6719: my $proname = &propath($domain, $user);
6720: my $passwdfile = "$proname/passwd";
6721: if( -e $passwdfile ) {
6722: my $pf = IO::File->new($passwdfile);
6723: my $realpassword = <$pf>;
6724: chomp($realpassword);
1.79 foxr 6725: Debug("Password info = $realpassword\n");
1.78 foxr 6726: my ($authtype, $contentpwd) = split(/:/, $realpassword);
1.79 foxr 6727: Debug("Authtype = $authtype, content = $contentpwd\n");
1.259 raeburn 6728: return "$authtype:$contentpwd";
1.224 foxr 6729: } else {
1.79 foxr 6730: Debug("Returning nouser");
1.78 foxr 6731: return "nouser";
6732: }
1.1 albertel 6733: }
6734:
1.220 foxr 6735: #
6736: # Validate a user given their domain, name and password. This utility
6737: # function is used by both AuthenticateHandler and ChangePasswordHandler
6738: # to validate the login credentials of a user.
6739: # Parameters:
6740: # $domain - The domain being logged into (this is required due to
6741: # the capability for multihomed systems.
6742: # $user - The name of the user being validated.
6743: # $password - The user's propoposed password.
6744: #
6745: # Returns:
6746: # 1 - The domain,user,pasword triplet corresponds to a valid
6747: # user.
6748: # 0 - The domain,user,password triplet is not a valid user.
6749: #
6750: sub validate_user {
1.396 raeburn 6751: my ($domain, $user, $password, $checkdefauth) = @_;
1.220 foxr 6752:
6753: # Why negative ~pi you may well ask? Well this function is about
6754: # authentication, and therefore very important to get right.
6755: # I've initialized the flag that determines whether or not I've
6756: # validated correctly to a value it's not supposed to get.
6757: # At the end of this function. I'll ensure that it's not still that
6758: # value so we don't just wind up returning some accidental value
6759: # as a result of executing an unforseen code path that
1.249 foxr 6760: # did not set $validated. At the end of valid execution paths,
6761: # validated shoule be 1 for success or 0 for failuer.
1.220 foxr 6762:
6763: my $validated = -3.14159;
6764:
6765: # How we authenticate is determined by the type of authentication
6766: # the user has been assigned. If the authentication type is
6767: # "nouser", the user does not exist so we will return 0.
6768:
1.222 foxr 6769: my $contents = &get_auth_type($domain, $user);
1.220 foxr 6770: my ($howpwd, $contentpwd) = split(/:/, $contents);
6771:
6772: my $null = pack("C",0); # Used by kerberos auth types.
6773:
1.395 raeburn 6774: if ($howpwd eq 'nouser') {
1.396 raeburn 6775: if ($checkdefauth) {
6776: my %domdefaults = &Apache::lonnet::get_domain_defaults($domain);
6777: if ($domdefaults{'auth_def'} eq 'localauth') {
6778: $howpwd = $domdefaults{'auth_def'};
6779: $contentpwd = $domdefaults{'auth_arg_def'};
6780: } elsif ((($domdefaults{'auth_def'} eq 'krb4') ||
6781: ($domdefaults{'auth_def'} eq 'krb5')) &&
6782: ($domdefaults{'auth_arg_def'} ne '')) {
6783: $howpwd = $domdefaults{'auth_def'};
6784: $contentpwd = $domdefaults{'auth_arg_def'};
6785: }
1.395 raeburn 6786: }
6787: }
1.220 foxr 6788: if ($howpwd ne 'nouser') {
6789: if($howpwd eq "internal") { # Encrypted is in local password file.
6790: $validated = (crypt($password, $contentpwd) eq $contentpwd);
6791: }
6792: elsif ($howpwd eq "unix") { # User is a normal unix user.
6793: $contentpwd = (getpwnam($user))[1];
6794: if($contentpwd) {
6795: if($contentpwd eq 'x') { # Shadow password file...
6796: my $pwauth_path = "/usr/local/sbin/pwauth";
6797: open PWAUTH, "|$pwauth_path" or
6798: die "Cannot invoke authentication";
6799: print PWAUTH "$user\n$password\n";
6800: close PWAUTH;
6801: $validated = ! $?;
6802:
6803: } else { # Passwords in /etc/passwd.
6804: $validated = (crypt($password,
6805: $contentpwd) eq $contentpwd);
6806: }
6807: } else {
6808: $validated = 0;
6809: }
1.439 raeburn 6810: } elsif ($howpwd eq "krb4") { # user is in kerberos 4 auth. domain.
6811: my $checkwithkrb5 = 0;
6812: if ($dist =~/^fedora(\d+)$/) {
6813: if ($1 > 11) {
6814: $checkwithkrb5 = 1;
6815: }
6816: } elsif ($dist =~ /^suse([\d.]+)$/) {
6817: if ($1 > 11.1) {
6818: $checkwithkrb5 = 1;
6819: }
6820: }
6821: if ($checkwithkrb5) {
6822: $validated = &krb5_authen($password,$null,$user,$contentpwd);
6823: } else {
6824: $validated = &krb4_authen($password,$null,$user,$contentpwd);
6825: }
1.224 foxr 6826: } elsif ($howpwd eq "krb5") { # User is in kerberos 5 auth. domain.
1.439 raeburn 6827: $validated = &krb5_authen($password,$null,$user,$contentpwd);
1.224 foxr 6828: } elsif ($howpwd eq "localauth") {
1.220 foxr 6829: # Authenticate via installation specific authentcation method:
6830: $validated = &localauth::localauth($user,
6831: $password,
1.353 albertel 6832: $contentpwd,
6833: $domain);
1.358 albertel 6834: if ($validated < 0) {
1.357 albertel 6835: &logthis("localauth for $contentpwd $user:$domain returned a $validated");
6836: $validated = 0;
6837: }
1.224 foxr 6838: } else { # Unrecognized auth is also bad.
1.220 foxr 6839: $validated = 0;
6840: }
6841: } else {
6842: $validated = 0;
6843: }
6844: #
6845: # $validated has the correct stat of the authentication:
6846: #
6847:
6848: unless ($validated != -3.14159) {
1.249 foxr 6849: # I >really really< want to know if this happens.
6850: # since it indicates that user authentication is badly
6851: # broken in some code path.
6852: #
6853: die "ValidateUser - failed to set the value of validated $domain, $user $password";
1.220 foxr 6854: }
6855: return $validated;
6856: }
6857:
1.439 raeburn 6858: sub krb4_authen {
6859: my ($password,$null,$user,$contentpwd) = @_;
6860: my $validated = 0;
6861: if (!($password =~ /$null/) ) { # Null password not allowed.
6862: eval {
6863: require Authen::Krb4;
6864: };
6865: if (!$@) {
6866: my $k4error = &Authen::Krb4::get_pw_in_tkt($user,
6867: "",
6868: $contentpwd,,
6869: 'krbtgt',
6870: $contentpwd,
6871: 1,
6872: $password);
6873: if(!$k4error) {
6874: $validated = 1;
6875: } else {
6876: $validated = 0;
6877: &logthis('krb4: '.$user.', '.$contentpwd.', '.
6878: &Authen::Krb4::get_err_txt($Authen::Krb4::error));
6879: }
6880: } else {
6881: $validated = krb5_authen($password,$null,$user,$contentpwd);
6882: }
6883: }
6884: return $validated;
6885: }
6886:
6887: sub krb5_authen {
6888: my ($password,$null,$user,$contentpwd) = @_;
6889: my $validated = 0;
6890: if(!($password =~ /$null/)) { # Null password not allowed.
6891: my $krbclient = &Authen::Krb5::parse_name($user.'@'
6892: .$contentpwd);
6893: my $krbservice = "krbtgt/".$contentpwd."\@".$contentpwd;
6894: my $krbserver = &Authen::Krb5::parse_name($krbservice);
6895: my $credentials= &Authen::Krb5::cc_default();
6896: $credentials->initialize(&Authen::Krb5::parse_name($user.'@'
6897: .$contentpwd));
6898: my $krbreturn;
6899: if (exists(&Authen::Krb5::get_init_creds_password)) {
6900: $krbreturn =
6901: &Authen::Krb5::get_init_creds_password($krbclient,$password,
6902: $krbservice);
6903: $validated = (ref($krbreturn) eq 'Authen::Krb5::Creds');
6904: } else {
6905: $krbreturn =
6906: &Authen::Krb5::get_in_tkt_with_password($krbclient,$krbserver,
6907: $password,$credentials);
6908: $validated = ($krbreturn == 1);
6909: }
6910: if (!$validated) {
6911: &logthis('krb5: '.$user.', '.$contentpwd.', '.
6912: &Authen::Krb5::error());
6913: }
6914: }
6915: return $validated;
6916: }
1.220 foxr 6917:
1.84 albertel 6918: sub addline {
6919: my ($fname,$hostid,$ip,$newline)=@_;
6920: my $contents;
6921: my $found=0;
1.355 albertel 6922: my $expr='^'.quotemeta($hostid).':'.quotemeta($ip).':';
1.134 albertel 6923: my $sh;
1.84 albertel 6924: if ($sh=IO::File->new("$fname.subscription")) {
6925: while (my $subline=<$sh>) {
6926: if ($subline !~ /$expr/) {$contents.= $subline;} else {$found=1;}
6927: }
6928: $sh->close();
6929: }
6930: $sh=IO::File->new(">$fname.subscription");
6931: if ($contents) { print $sh $contents; }
6932: if ($newline) { print $sh $newline; }
6933: $sh->close();
6934: return $found;
1.86 www 6935: }
6936:
1.234 foxr 6937: sub get_chat {
1.324 raeburn 6938: my ($cdom,$cname,$udom,$uname,$group)=@_;
1.310 albertel 6939:
1.87 www 6940: my @entries=();
1.324 raeburn 6941: my $namespace = 'nohist_chatroom';
6942: my $namespace_inroom = 'nohist_inchatroom';
1.335 albertel 6943: if ($group ne '') {
1.324 raeburn 6944: $namespace .= '_'.$group;
6945: $namespace_inroom .= '_'.$group;
6946: }
6947: my $hashref = &tie_user_hash($cdom, $cname, $namespace,
1.310 albertel 6948: &GDBM_READER());
6949: if ($hashref) {
6950: @entries=map { $_.':'.$hashref->{$_} } sort(keys(%$hashref));
1.311 albertel 6951: &untie_user_hash($hashref);
1.123 www 6952: }
1.124 www 6953: my @participants=();
1.134 albertel 6954: my $cutoff=time-60;
1.324 raeburn 6955: $hashref = &tie_user_hash($cdom, $cname, $namespace_inroom,
1.310 albertel 6956: &GDBM_WRCREAT());
6957: if ($hashref) {
6958: $hashref->{$uname.':'.$udom}=time;
6959: foreach my $user (sort(keys(%$hashref))) {
6960: if ($hashref->{$user}>$cutoff) {
6961: push(@participants, 'active_participant:'.$user);
1.123 www 6962: }
6963: }
1.311 albertel 6964: &untie_user_hash($hashref);
1.86 www 6965: }
1.124 www 6966: return (@participants,@entries);
1.86 www 6967: }
6968:
1.234 foxr 6969: sub chat_add {
1.324 raeburn 6970: my ($cdom,$cname,$newchat,$group)=@_;
1.88 albertel 6971: my @entries=();
1.142 www 6972: my $time=time;
1.324 raeburn 6973: my $namespace = 'nohist_chatroom';
6974: my $logfile = 'chatroom.log';
1.335 albertel 6975: if ($group ne '') {
1.324 raeburn 6976: $namespace .= '_'.$group;
6977: $logfile = 'chatroom_'.$group.'.log';
6978: }
6979: my $hashref = &tie_user_hash($cdom, $cname, $namespace,
1.310 albertel 6980: &GDBM_WRCREAT());
6981: if ($hashref) {
6982: @entries=map { $_.':'.$hashref->{$_} } sort(keys(%$hashref));
1.88 albertel 6983: my ($lastid)=($entries[$#entries]=~/^(\w+)\:/);
6984: my ($thentime,$idnum)=split(/\_/,$lastid);
6985: my $newid=$time.'_000000';
6986: if ($thentime==$time) {
6987: $idnum=~s/^0+//;
6988: $idnum++;
6989: $idnum=substr('000000'.$idnum,-6,6);
6990: $newid=$time.'_'.$idnum;
6991: }
1.310 albertel 6992: $hashref->{$newid}=$newchat;
1.88 albertel 6993: my $expired=$time-3600;
1.310 albertel 6994: foreach my $comment (keys(%$hashref)) {
6995: my ($thistime) = ($comment=~/(\d+)\_/);
1.88 albertel 6996: if ($thistime<$expired) {
1.310 albertel 6997: delete $hashref->{$comment};
1.88 albertel 6998: }
6999: }
1.310 albertel 7000: {
7001: my $proname=&propath($cdom,$cname);
1.324 raeburn 7002: if (open(CHATLOG,">>$proname/$logfile")) {
1.310 albertel 7003: print CHATLOG ("$time:".&unescape($newchat)."\n");
7004: }
7005: close(CHATLOG);
1.142 www 7006: }
1.311 albertel 7007: &untie_user_hash($hashref);
1.86 www 7008: }
1.84 albertel 7009: }
7010:
7011: sub unsub {
7012: my ($fname,$clientip)=@_;
7013: my $result;
1.188 foxr 7014: my $unsubs = 0; # Number of successful unsubscribes:
7015:
7016:
7017: # An old way subscriptions were handled was to have a
7018: # subscription marker file:
7019:
7020: Debug("Attempting unlink of $fname.$clientname");
1.161 foxr 7021: if (unlink("$fname.$clientname")) {
1.188 foxr 7022: $unsubs++; # Successful unsub via marker file.
7023: }
7024:
7025: # The more modern way to do it is to have a subscription list
7026: # file:
7027:
1.84 albertel 7028: if (-e "$fname.subscription") {
1.161 foxr 7029: my $found=&addline($fname,$clientname,$clientip,'');
1.188 foxr 7030: if ($found) {
7031: $unsubs++;
7032: }
7033: }
7034:
7035: # If either or both of these mechanisms succeeded in unsubscribing a
7036: # resource we can return ok:
7037:
7038: if($unsubs) {
7039: $result = "ok\n";
1.84 albertel 7040: } else {
1.188 foxr 7041: $result = "not_subscribed\n";
1.84 albertel 7042: }
1.188 foxr 7043:
1.84 albertel 7044: return $result;
7045: }
7046:
1.101 www 7047: sub currentversion {
7048: my $fname=shift;
7049: my $version=-1;
7050: my $ulsdir='';
7051: if ($fname=~/^(.+)\/[^\/]+$/) {
7052: $ulsdir=$1;
7053: }
1.114 albertel 7054: my ($fnamere1,$fnamere2);
7055: # remove version if already specified
1.101 www 7056: $fname=~s/\.\d+\.(\w+(?:\.meta)*)$/\.$1/;
1.114 albertel 7057: # get the bits that go before and after the version number
7058: if ( $fname=~/^(.*\.)(\w+(?:\.meta)*)$/ ) {
7059: $fnamere1=$1;
7060: $fnamere2='.'.$2;
7061: }
1.101 www 7062: if (-e $fname) { $version=1; }
7063: if (-e $ulsdir) {
1.134 albertel 7064: if(-d $ulsdir) {
7065: if (opendir(LSDIR,$ulsdir)) {
7066: my $ulsfn;
7067: while ($ulsfn=readdir(LSDIR)) {
1.101 www 7068: # see if this is a regular file (ignore links produced earlier)
1.134 albertel 7069: my $thisfile=$ulsdir.'/'.$ulsfn;
7070: unless (-l $thisfile) {
1.160 www 7071: if ($thisfile=~/\Q$fnamere1\E(\d+)\Q$fnamere2\E$/) {
1.134 albertel 7072: if ($1>$version) { $version=$1; }
7073: }
7074: }
7075: }
7076: closedir(LSDIR);
7077: $version++;
7078: }
7079: }
7080: }
7081: return $version;
1.101 www 7082: }
7083:
7084: sub thisversion {
7085: my $fname=shift;
7086: my $version=-1;
7087: if ($fname=~/\.(\d+)\.\w+(?:\.meta)*$/) {
7088: $version=$1;
7089: }
7090: return $version;
7091: }
7092:
1.84 albertel 7093: sub subscribe {
7094: my ($userinput,$clientip)=@_;
7095: my $result;
1.293 albertel 7096: my ($cmd,$fname)=split(/:/,$userinput,2);
1.84 albertel 7097: my $ownership=&ishome($fname);
7098: if ($ownership eq 'owner') {
1.101 www 7099: # explitly asking for the current version?
7100: unless (-e $fname) {
7101: my $currentversion=¤tversion($fname);
7102: if (&thisversion($fname)==$currentversion) {
7103: if ($fname=~/^(.+)\.\d+\.(\w+(?:\.meta)*)$/) {
7104: my $root=$1;
7105: my $extension=$2;
7106: symlink($root.'.'.$extension,
7107: $root.'.'.$currentversion.'.'.$extension);
1.102 www 7108: unless ($extension=~/\.meta$/) {
7109: symlink($root.'.'.$extension.'.meta',
7110: $root.'.'.$currentversion.'.'.$extension.'.meta');
7111: }
1.101 www 7112: }
7113: }
7114: }
1.84 albertel 7115: if (-e $fname) {
7116: if (-d $fname) {
7117: $result="directory\n";
7118: } else {
1.161 foxr 7119: if (-e "$fname.$clientname") {&unsub($fname,$clientip);}
1.134 albertel 7120: my $now=time;
1.161 foxr 7121: my $found=&addline($fname,$clientname,$clientip,
7122: "$clientname:$clientip:$now\n");
1.84 albertel 7123: if ($found) { $result="$fname\n"; }
7124: # if they were subscribed to only meta data, delete that
7125: # subscription, when you subscribe to a file you also get
7126: # the metadata
7127: unless ($fname=~/\.meta$/) { &unsub("$fname.meta",$clientip); }
7128: $fname=~s/\/home\/httpd\/html\/res/raw/;
1.373 albertel 7129: $fname="http://".&Apache::lonnet::hostname($perlvar{'lonHostID'})."/".$fname;
1.84 albertel 7130: $result="$fname\n";
7131: }
7132: } else {
7133: $result="not_found\n";
7134: }
7135: } else {
7136: $result="rejected\n";
7137: }
7138: return $result;
7139: }
1.287 foxr 7140: # Change the passwd of a unix user. The caller must have
7141: # first verified that the user is a loncapa user.
7142: #
7143: # Parameters:
7144: # user - Unix user name to change.
7145: # pass - New password for the user.
7146: # Returns:
7147: # ok - if success
7148: # other - Some meaningfule error message string.
7149: # NOTE:
7150: # invokes a setuid script to change the passwd.
7151: sub change_unix_password {
7152: my ($user, $pass) = @_;
7153:
7154: &Debug("change_unix_password");
7155: my $execdir=$perlvar{'lonDaemons'};
7156: &Debug("Opening lcpasswd pipeline");
7157: my $pf = IO::File->new("|$execdir/lcpasswd > "
7158: ."$perlvar{'lonDaemons'}"
7159: ."/logs/lcpasswd.log");
7160: print $pf "$user\n$pass\n$pass\n";
7161: close $pf;
7162: my $err = $?;
7163: return ($err < @passwderrors) ? $passwderrors[$err] :
7164: "pwchange_falure - unknown error";
7165:
7166:
7167: }
7168:
1.91 albertel 7169:
7170: sub make_passwd_file {
1.98 foxr 7171: my ($uname, $umode,$npass,$passfilename)=@_;
1.390 raeburn 7172: my $result="ok";
1.91 albertel 7173: if ($umode eq 'krb4' or $umode eq 'krb5') {
7174: {
7175: my $pf = IO::File->new(">$passfilename");
1.261 foxr 7176: if ($pf) {
7177: print $pf "$umode:$npass\n";
7178: } else {
7179: $result = "pass_file_failed_error";
7180: }
1.91 albertel 7181: }
7182: } elsif ($umode eq 'internal') {
7183: my $salt=time;
7184: $salt=substr($salt,6,2);
7185: my $ncpass=crypt($npass,$salt);
7186: {
7187: &Debug("Creating internal auth");
7188: my $pf = IO::File->new(">$passfilename");
1.261 foxr 7189: if($pf) {
7190: print $pf "internal:$ncpass\n";
7191: } else {
7192: $result = "pass_file_failed_error";
7193: }
1.91 albertel 7194: }
7195: } elsif ($umode eq 'localauth') {
7196: {
7197: my $pf = IO::File->new(">$passfilename");
1.261 foxr 7198: if($pf) {
7199: print $pf "localauth:$npass\n";
7200: } else {
7201: $result = "pass_file_failed_error";
7202: }
1.91 albertel 7203: }
7204: } elsif ($umode eq 'unix') {
7205: {
1.186 foxr 7206: #
7207: # Don't allow the creation of privileged accounts!!! that would
7208: # be real bad!!!
7209: #
7210: my $uid = getpwnam($uname);
7211: if((defined $uid) && ($uid == 0)) {
7212: &logthis(">>>Attempted to create privilged account blocked");
7213: return "no_priv_account_error\n";
7214: }
7215:
1.223 foxr 7216: my $execpath ="$perlvar{'lonDaemons'}/"."lcuseradd";
1.224 foxr 7217:
7218: my $lc_error_file = $execdir."/tmp/lcuseradd".$$.".status";
1.91 albertel 7219: {
7220: &Debug("Executing external: ".$execpath);
1.98 foxr 7221: &Debug("user = ".$uname.", Password =". $npass);
1.132 matthew 7222: my $se = IO::File->new("|$execpath > $perlvar{'lonDaemons'}/logs/lcuseradd.log");
1.91 albertel 7223: print $se "$uname\n";
7224: print $se "$npass\n";
7225: print $se "$npass\n";
1.223 foxr 7226: print $se "$lc_error_file\n"; # Status -> unique file.
1.97 foxr 7227: }
1.285 foxr 7228: if (-r $lc_error_file) {
7229: &Debug("Opening error file: $lc_error_file");
7230: my $error = IO::File->new("< $lc_error_file");
7231: my $useraddok = <$error>;
7232: $error->close;
7233: unlink($lc_error_file);
7234:
7235: chomp $useraddok;
7236:
7237: if($useraddok > 0) {
7238: my $error_text = &lcuseraddstrerror($useraddok);
7239: &logthis("Failed lcuseradd: $error_text");
1.390 raeburn 7240: $result = "lcuseradd_failed:$error_text";
1.285 foxr 7241: } else {
7242: my $pf = IO::File->new(">$passfilename");
7243: if($pf) {
7244: print $pf "unix:\n";
7245: } else {
7246: $result = "pass_file_failed_error";
7247: }
7248: }
1.224 foxr 7249: } else {
1.285 foxr 7250: &Debug("Could not locate lcuseradd error: $lc_error_file");
7251: $result="bug_lcuseradd_no_output_file";
1.91 albertel 7252: }
7253: }
7254: } elsif ($umode eq 'none') {
7255: {
1.223 foxr 7256: my $pf = IO::File->new("> $passfilename");
1.261 foxr 7257: if($pf) {
7258: print $pf "none:\n";
7259: } else {
7260: $result = "pass_file_failed_error";
7261: }
1.91 albertel 7262: }
7263: } else {
1.390 raeburn 7264: $result="auth_mode_error";
1.91 albertel 7265: }
7266: return $result;
1.121 albertel 7267: }
7268:
1.265 albertel 7269: sub convert_photo {
7270: my ($start,$dest)=@_;
7271: system("convert $start $dest");
7272: }
7273:
1.121 albertel 7274: sub sethost {
7275: my ($remotereq) = @_;
7276: my (undef,$hostid)=split(/:/,$remotereq);
1.322 albertel 7277: # ignore sethost if we are already correct
7278: if ($hostid eq $currenthostid) {
7279: return 'ok';
7280: }
7281:
1.121 albertel 7282: if (!defined($hostid)) { $hostid=$perlvar{'lonHostID'}; }
1.368 albertel 7283: if (&Apache::lonnet::get_host_ip($perlvar{'lonHostID'})
7284: eq &Apache::lonnet::get_host_ip($hostid)) {
1.200 matthew 7285: $currenthostid =$hostid;
1.369 albertel 7286: $currentdomainid=&Apache::lonnet::host_domain($hostid);
1.443 www 7287: # &logthis("Setting hostid to $hostid, and domain to $currentdomainid");
1.121 albertel 7288: } else {
7289: &logthis("Requested host id $hostid not an alias of ".
7290: $perlvar{'lonHostID'}." refusing connection");
7291: return 'unable_to_set';
7292: }
7293: return 'ok';
7294: }
7295:
7296: sub version {
7297: my ($userinput)=@_;
7298: $remoteVERSION=(split(/:/,$userinput))[1];
7299: return "version:$VERSION";
1.127 albertel 7300: }
1.178 foxr 7301:
1.447 raeburn 7302: sub get_usersession_config {
7303: my ($dom,$name) = @_;
7304: my ($usersessionconf,$cached)=&Apache::lonnet::is_cached_new($name,$dom);
7305: if (defined($cached)) {
7306: return $usersessionconf;
7307: } else {
7308: my %domconfig = &Apache::lonnet::get_dom('configuration',['usersessions'],$dom);
7309: if (ref($domconfig{'usersessions'}) eq 'HASH') {
7310: &Apache::lonnet::do_cache_new($name,$dom,$domconfig{'usersessions'},3600);
7311: return $domconfig{'usersessions'};
7312: }
7313: }
7314: return;
7315: }
1.200 matthew 7316:
1.453 raeburn 7317: sub releasereqd_check {
1.457 raeburn 7318: my ($cnum,$cdom,$key,$value,$major,$minor,$homecourses,$ids) = @_;
1.453 raeburn 7319: my $home = &Apache::lonnet::homeserver($cnum,$cdom);
7320: return if ($home eq 'no_host');
7321: my ($reqdmajor,$reqdminor,$displayrole);
7322: if ($cnum =~ /$LONCAPA::match_community/) {
7323: if ($major eq '' && $minor eq '') {
7324: return unless ((ref($ids) eq 'ARRAY') &&
7325: (grep(/^\Q$home\E$/,@{$ids})));
7326: } else {
7327: $reqdmajor = 2;
7328: $reqdminor = 9;
7329: return unless (&useable_role($reqdmajor,$reqdminor,$major,$minor));
7330: }
7331: }
1.457 raeburn 7332: my $hashid = $cdom.':'.$cnum;
7333: my ($courseinfo,$cached) =
7334: &Apache::lonnet::is_cached_new('courseinfo',$hashid);
7335: if (defined($cached)) {
7336: if (ref($courseinfo) eq 'HASH') {
7337: if (exists($courseinfo->{'releaserequired'})) {
7338: my ($reqdmajor,$reqdminor) = split(/\./,$courseinfo->{'releaserequired'});
7339: return unless (&useable_role($reqdmajor,$reqdminor,$major,$minor));
1.453 raeburn 7340: }
1.457 raeburn 7341: }
7342: } else {
7343: if (ref($ids) eq 'ARRAY') {
7344: if (grep(/^\Q$home\E$/,@{$ids})) {
7345: if (ref($homecourses) eq 'HASH') {
7346: if (ref($homecourses->{$hashid}) eq 'ARRAY') {
7347: push(@{$homecourses->{$hashid}},{$key=>$value});
7348: } else {
7349: $homecourses->{$hashid} = [{$key=>$value}];
1.453 raeburn 7350: }
7351: }
1.457 raeburn 7352: return;
1.453 raeburn 7353: }
1.457 raeburn 7354: }
7355: my $courseinfo = &get_courseinfo_hash($cnum,$cdom,$home);
7356: if (ref($courseinfo) eq 'HASH') {
7357: if (exists($courseinfo->{'releaserequired'})) {
7358: my ($reqdmajor,$reqdminor) = split(/\./,$courseinfo->{'releaserequired'});
7359: return unless (&useable_role($reqdmajor,$reqdminor,$major,$minor));
1.453 raeburn 7360: }
1.466 raeburn 7361: } else {
7362: return;
1.453 raeburn 7363: }
7364: }
7365: return 1;
7366: }
7367:
1.450 raeburn 7368: sub get_courseinfo_hash {
7369: my ($cnum,$cdom,$home) = @_;
1.466 raeburn 7370: my %info;
7371: eval {
7372: local($SIG{ALRM}) = sub { die "timeout\n"; };
7373: local($SIG{__DIE__})='DEFAULT';
7374: alarm(3);
7375: %info = &Apache::lonnet::courseiddump($cdom,'.',1,'.','.',$cnum,1,[$home],'.');
7376: alarm(0);
7377: };
7378: if ($@) {
7379: if ($@ eq "timeout\n") {
7380: &logthis("<font color='blue'>WARNING courseiddump for $cnum:$cdom from $home timedout</font>");
7381: } else {
7382: &logthis("<font color='yellow'>WARNING unexpected error during eval of call for courseiddump from $home</font>");
7383: }
7384: } else {
7385: if (ref($info{$cdom.'_'.$cnum}) eq 'HASH') {
7386: my $hashid = $cdom.':'.$cnum;
7387: return &Apache::lonnet::do_cache_new('courseinfo',$hashid,$info{$cdom.'_'.$cnum},600);
7388: }
1.453 raeburn 7389: }
7390: return;
7391: }
7392:
7393: sub check_homecourses {
7394: my ($homecourses,$udom,$regexp,$count,$range,$start,$end,$major,$minor) = @_;
7395: my ($result,%addtocache);
1.459 raeburn 7396: my $yesterday = time - 24*3600;
1.453 raeburn 7397: if (ref($homecourses) eq 'HASH') {
1.459 raeburn 7398: my (%okcourses,%courseinfo,%recent);
1.453 raeburn 7399: my $hashref = &tie_domain_hash($udom, "nohist_courseids", &GDBM_WRCREAT());
7400: if ($hashref) {
7401: while (my ($key,$value) = each(%$hashref)) {
7402: my $unesc_key = &unescape($key);
1.459 raeburn 7403: if ($unesc_key =~ /^lasttime:(\w+)$/) {
7404: my $cid = $1;
7405: $cid =~ s/_/:/;
7406: if ($value > $yesterday ) {
7407: $recent{$cid} = 1;
7408: }
7409: next;
7410: }
1.453 raeburn 7411: my $items = &Apache::lonnet::thaw_unescape($value);
7412: if (ref($items) eq 'HASH') {
7413: my $hashid = $unesc_key;
7414: $hashid =~ s/_/:/;
1.459 raeburn 7415: $courseinfo{$hashid} = $items;
1.453 raeburn 7416: if (ref($homecourses->{$hashid}) eq 'ARRAY') {
7417: my ($reqdmajor,$reqdminor) = split(/\./,$items->{'releaserequired'});
7418: if (&useable_role($reqdmajor,$reqdminor,$major,$minor)) {
7419: $okcourses{$hashid} = 1;
7420: }
7421: }
7422: }
7423: }
7424: unless (&untie_domain_hash($hashref)) {
7425: &logthis('Failed to untie tied hash for nohist_courseids.db');
7426: }
7427: } else {
7428: &logthis('Failed to tie hash for nohist_courseids.db');
7429: return;
7430: }
1.459 raeburn 7431: foreach my $hashid (keys(%recent)) {
1.465 raeburn 7432: my ($result,$cached)=&Apache::lonnet::is_cached_new('courseinfo',$hashid);
1.464 raeburn 7433: unless ($cached) {
7434: &Apache::lonnet::do_cache_new('courseinfo',$hashid,$courseinfo{$hashid},600);
7435: }
1.459 raeburn 7436: }
7437: foreach my $hashid (keys(%{$homecourses})) {
7438: next if ($recent{$hashid});
7439: &Apache::lonnet::do_cache_new('courseinfo',$hashid,$courseinfo{$hashid},600);
7440: }
1.453 raeburn 7441: foreach my $hashid (keys(%okcourses)) {
7442: if (ref($homecourses->{$hashid}) eq 'ARRAY') {
7443: foreach my $role (@{$homecourses->{$hashid}}) {
7444: if (ref($role) eq 'HASH') {
7445: while (my ($key,$value) = each(%{$role})) {
7446: if ($regexp eq '.') {
7447: $count++;
7448: if (defined($range) && $count >= $end) { last; }
7449: if (defined($range) && $count < $start) { next; }
7450: $result.=$key.'='.$value.'&';
7451: } else {
7452: my $unescapeKey = &unescape($key);
7453: if (eval('$unescapeKey=~/$regexp/')) {
7454: $count++;
7455: if (defined($range) && $count >= $end) { last; }
7456: if (defined($range) && $count < $start) { next; }
7457: $result.="$key=$value&";
7458: }
7459: }
7460: }
7461: }
7462: }
7463: }
1.450 raeburn 7464: }
7465: }
1.453 raeburn 7466: return $result;
7467: }
7468:
7469: sub useable_role {
7470: my ($reqdmajor,$reqdminor,$major,$minor) = @_;
7471: if ($reqdmajor ne '' && $reqdminor ne '') {
7472: return if (($major eq '' && $minor eq '') ||
7473: ($major < $reqdmajor) ||
7474: (($major == $reqdmajor) && ($minor < $reqdminor)));
7475: }
7476: return 1;
1.450 raeburn 7477: }
7478:
1.61 harris41 7479: # ----------------------------------- POD (plain old documentation, CPAN style)
7480:
7481: =head1 NAME
7482:
7483: lond - "LON Daemon" Server (port "LOND" 5663)
7484:
7485: =head1 SYNOPSIS
7486:
1.74 harris41 7487: Usage: B<lond>
7488:
7489: Should only be run as user=www. This is a command-line script which
7490: is invoked by B<loncron>. There is no expectation that a typical user
7491: will manually start B<lond> from the command-line. (In other words,
7492: DO NOT START B<lond> YOURSELF.)
1.61 harris41 7493:
7494: =head1 DESCRIPTION
7495:
1.74 harris41 7496: There are two characteristics associated with the running of B<lond>,
7497: PROCESS MANAGEMENT (starting, stopping, handling child processes)
7498: and SERVER-SIDE ACTIVITIES (password authentication, user creation,
7499: subscriptions, etc). These are described in two large
7500: sections below.
7501:
7502: B<PROCESS MANAGEMENT>
7503:
1.61 harris41 7504: Preforker - server who forks first. Runs as a daemon. HUPs.
7505: Uses IDEA encryption
7506:
1.74 harris41 7507: B<lond> forks off children processes that correspond to the other servers
7508: in the network. Management of these processes can be done at the
7509: parent process level or the child process level.
7510:
7511: B<logs/lond.log> is the location of log messages.
7512:
7513: The process management is now explained in terms of linux shell commands,
7514: subroutines internal to this code, and signal assignments:
7515:
7516: =over 4
7517:
7518: =item *
7519:
7520: PID is stored in B<logs/lond.pid>
7521:
7522: This is the process id number of the parent B<lond> process.
7523:
7524: =item *
7525:
7526: SIGTERM and SIGINT
7527:
7528: Parent signal assignment:
7529: $SIG{INT} = $SIG{TERM} = \&HUNTSMAN;
7530:
7531: Child signal assignment:
7532: $SIG{INT} = 'DEFAULT'; (and SIGTERM is DEFAULT also)
7533: (The child dies and a SIGALRM is sent to parent, awaking parent from slumber
7534: to restart a new child.)
7535:
7536: Command-line invocations:
7537: B<kill> B<-s> SIGTERM I<PID>
7538: B<kill> B<-s> SIGINT I<PID>
7539:
7540: Subroutine B<HUNTSMAN>:
7541: This is only invoked for the B<lond> parent I<PID>.
7542: This kills all the children, and then the parent.
7543: The B<lonc.pid> file is cleared.
7544:
7545: =item *
7546:
7547: SIGHUP
7548:
7549: Current bug:
7550: This signal can only be processed the first time
7551: on the parent process. Subsequent SIGHUP signals
7552: have no effect.
7553:
7554: Parent signal assignment:
7555: $SIG{HUP} = \&HUPSMAN;
7556:
7557: Child signal assignment:
7558: none (nothing happens)
7559:
7560: Command-line invocations:
7561: B<kill> B<-s> SIGHUP I<PID>
7562:
7563: Subroutine B<HUPSMAN>:
7564: This is only invoked for the B<lond> parent I<PID>,
7565: This kills all the children, and then the parent.
7566: The B<lond.pid> file is cleared.
7567:
7568: =item *
7569:
7570: SIGUSR1
7571:
7572: Parent signal assignment:
7573: $SIG{USR1} = \&USRMAN;
7574:
7575: Child signal assignment:
7576: $SIG{USR1}= \&logstatus;
7577:
7578: Command-line invocations:
7579: B<kill> B<-s> SIGUSR1 I<PID>
7580:
7581: Subroutine B<USRMAN>:
7582: When invoked for the B<lond> parent I<PID>,
7583: SIGUSR1 is sent to all the children, and the status of
7584: each connection is logged.
1.144 foxr 7585:
7586: =item *
7587:
7588: SIGUSR2
7589:
7590: Parent Signal assignment:
7591: $SIG{USR2} = \&UpdateHosts
7592:
7593: Child signal assignment:
7594: NONE
7595:
1.74 harris41 7596:
7597: =item *
7598:
7599: SIGCHLD
7600:
7601: Parent signal assignment:
7602: $SIG{CHLD} = \&REAPER;
7603:
7604: Child signal assignment:
7605: none
7606:
7607: Command-line invocations:
7608: B<kill> B<-s> SIGCHLD I<PID>
7609:
7610: Subroutine B<REAPER>:
7611: This is only invoked for the B<lond> parent I<PID>.
7612: Information pertaining to the child is removed.
7613: The socket port is cleaned up.
7614:
7615: =back
7616:
7617: B<SERVER-SIDE ACTIVITIES>
7618:
7619: Server-side information can be accepted in an encrypted or non-encrypted
7620: method.
7621:
7622: =over 4
7623:
7624: =item ping
7625:
7626: Query a client in the hosts.tab table; "Are you there?"
7627:
7628: =item pong
7629:
7630: Respond to a ping query.
7631:
7632: =item ekey
7633:
7634: Read in encrypted key, make cipher. Respond with a buildkey.
7635:
7636: =item load
7637:
7638: Respond with CPU load based on a computation upon /proc/loadavg.
7639:
7640: =item currentauth
7641:
7642: Reply with current authentication information (only over an
7643: encrypted channel).
7644:
7645: =item auth
7646:
7647: Only over an encrypted channel, reply as to whether a user's
7648: authentication information can be validated.
7649:
7650: =item passwd
7651:
7652: Allow for a password to be set.
7653:
7654: =item makeuser
7655:
7656: Make a user.
7657:
7658: =item passwd
7659:
7660: Allow for authentication mechanism and password to be changed.
7661:
7662: =item home
1.61 harris41 7663:
1.74 harris41 7664: Respond to a question "are you the home for a given user?"
7665:
7666: =item update
7667:
7668: Update contents of a subscribed resource.
7669:
7670: =item unsubscribe
7671:
7672: The server is unsubscribing from a resource.
7673:
7674: =item subscribe
7675:
7676: The server is subscribing to a resource.
7677:
7678: =item log
7679:
7680: Place in B<logs/lond.log>
7681:
7682: =item put
7683:
7684: stores hash in namespace
7685:
1.230 foxr 7686: =item rolesputy
1.74 harris41 7687:
7688: put a role into a user's environment
7689:
7690: =item get
7691:
7692: returns hash with keys from array
7693: reference filled in from namespace
7694:
7695: =item eget
7696:
7697: returns hash with keys from array
7698: reference filled in from namesp (encrypts the return communication)
7699:
7700: =item rolesget
7701:
7702: get a role from a user's environment
7703:
7704: =item del
7705:
7706: deletes keys out of array from namespace
7707:
7708: =item keys
7709:
7710: returns namespace keys
7711:
7712: =item dump
7713:
7714: dumps the complete (or key matching regexp) namespace into a hash
7715:
7716: =item store
7717:
7718: stores hash permanently
7719: for this url; hashref needs to be given and should be a \%hashname; the
7720: remaining args aren't required and if they aren't passed or are '' they will
7721: be derived from the ENV
7722:
7723: =item restore
7724:
7725: returns a hash for a given url
7726:
7727: =item querysend
7728:
7729: Tells client about the lonsql process that has been launched in response
7730: to a sent query.
7731:
7732: =item queryreply
7733:
7734: Accept information from lonsql and make appropriate storage in temporary
7735: file space.
7736:
7737: =item idput
7738:
7739: Defines usernames as corresponding to IDs. (These "IDs" are unique identifiers
7740: for each student, defined perhaps by the institutional Registrar.)
7741:
7742: =item idget
7743:
7744: Returns usernames corresponding to IDs. (These "IDs" are unique identifiers
7745: for each student, defined perhaps by the institutional Registrar.)
7746:
7747: =item tmpput
7748:
7749: Accept and store information in temporary space.
7750:
7751: =item tmpget
7752:
7753: Send along temporarily stored information.
7754:
7755: =item ls
7756:
7757: List part of a user's directory.
7758:
1.135 foxr 7759: =item pushtable
7760:
7761: Pushes a file in /home/httpd/lonTab directory. Currently limited to:
7762: hosts.tab and domain.tab. The old file is copied to *.tab.backup but
7763: must be restored manually in case of a problem with the new table file.
7764: pushtable requires that the request be encrypted and validated via
7765: ValidateManager. The form of the command is:
7766: enc:pushtable tablename <tablecontents> \n
7767: where pushtable, tablename and <tablecontents> will be encrypted, but \n is a
7768: cleartext newline.
7769:
1.74 harris41 7770: =item Hanging up (exit or init)
7771:
7772: What to do when a client tells the server that they (the client)
7773: are leaving the network.
7774:
7775: =item unknown command
7776:
7777: If B<lond> is sent an unknown command (not in the list above),
7778: it replys to the client "unknown_cmd".
1.135 foxr 7779:
1.74 harris41 7780:
7781: =item UNKNOWN CLIENT
7782:
7783: If the anti-spoofing algorithm cannot verify the client,
7784: the client is rejected (with a "refused" message sent
7785: to the client, and the connection is closed.
7786:
7787: =back
1.61 harris41 7788:
7789: =head1 PREREQUISITES
7790:
7791: IO::Socket
7792: IO::File
7793: Apache::File
7794: POSIX
7795: Crypt::IDEA
7796: LWP::UserAgent()
7797: GDBM_File
7798: Authen::Krb4
1.91 albertel 7799: Authen::Krb5
1.61 harris41 7800:
7801: =head1 COREQUISITES
7802:
7803: =head1 OSNAMES
7804:
7805: linux
7806:
7807: =head1 SCRIPT CATEGORIES
7808:
7809: Server/Process
7810:
7811: =cut
1.409 foxr 7812:
7813:
7814: =pod
7815:
7816: =head1 LOG MESSAGES
7817:
7818: The messages below can be emitted in the lond log. This log is located
7819: in ~httpd/perl/logs/lond.log Many log messages have HTML encapsulation
7820: to provide coloring if examined from inside a web page. Some do not.
7821: Where color is used, the colors are; Red for sometihhng to get excited
7822: about and to follow up on. Yellow for something to keep an eye on to
7823: be sure it does not get worse, Green,and Blue for informational items.
7824:
7825: In the discussions below, sometimes reference is made to ~httpd
7826: when describing file locations. There isn't really an httpd
7827: user, however there is an httpd directory that gets installed in the
7828: place that user home directories go. On linux, this is usually
7829: (always?) /home/httpd.
7830:
7831:
7832: Some messages are colorless. These are usually (not always)
7833: Green/Blue color level messages.
7834:
7835: =over 2
7836:
7837: =item (Red) LocalConnection rejecting non local: <ip> ne 127.0.0.1
7838:
7839: A local connection negotiation was attempted by
7840: a host whose IP address was not 127.0.0.1.
7841: The socket is closed and the child will exit.
7842: lond has three ways to establish an encyrption
7843: key with a client:
7844:
7845: =over 2
7846:
7847: =item local
7848:
7849: The key is written and read from a file.
7850: This is only valid for connections from localhost.
7851:
7852: =item insecure
7853:
7854: The key is generated by the server and
7855: transmitted to the client.
7856:
7857: =item ssl (secure)
7858:
7859: An ssl connection is negotiated with the client,
7860: the key is generated by the server and sent to the
7861: client across this ssl connection before the
7862: ssl connectionis terminated and clear text
7863: transmission resumes.
7864:
7865: =back
7866:
7867: =item (Red) LocalConnection: caller is insane! init = <init> and type = <type>
7868:
7869: The client is local but has not sent an initialization
7870: string that is the literal "init:local" The connection
7871: is closed and the child exits.
7872:
7873: =item Red CRITICAL Can't get key file <error>
7874:
7875: SSL key negotiation is being attempted but the call to
7876: lonssl::KeyFile failed. This usually means that the
7877: configuration file is not correctly defining or protecting
7878: the directories/files lonCertificateDirectory or
7879: lonnetPrivateKey
7880: <error> is a string that describes the reason that
7881: the key file could not be located.
7882:
7883: =item (Red) CRITICAL Can't get certificates <error>
7884:
7885: SSL key negotiation failed because we were not able to retrives our certificate
7886: or the CA's certificate in the call to lonssl::CertificateFile
7887: <error> is the textual reason this failed. Usual reasons:
7888:
7889: =over 2
7890:
7891: =item Apache config file for loncapa incorrect:
7892:
7893: one of the variables
7894: lonCertificateDirectory, lonnetCertificateAuthority, or lonnetCertificate
7895: undefined or incorrect
7896:
7897: =item Permission error:
7898:
7899: The directory pointed to by lonCertificateDirectory is not readable by lond
7900:
7901: =item Permission error:
7902:
7903: Files in the directory pointed to by lonCertificateDirectory are not readable by lond.
7904:
7905: =item Installation error:
7906:
7907: Either the certificate authority file or the certificate have not
7908: been installed in lonCertificateDirectory.
7909:
7910: =item (Red) CRITICAL SSL Socket promotion failed: <err>
7911:
7912: The promotion of the connection from plaintext to SSL failed
7913: <err> is the reason for the failure. There are two
7914: system calls involved in the promotion (one of which failed),
7915: a dup to produce
7916: a second fd on the raw socket over which the encrypted data
7917: will flow and IO::SOcket::SSL->new_from_fd which creates
7918: the SSL connection on the duped fd.
7919:
7920: =item (Blue) WARNING client did not respond to challenge
7921:
7922: This occurs on an insecure (non SSL) connection negotiation request.
7923: lond generates some number from the time, the PID and sends it to
7924: the client. The client must respond by echoing this information back.
7925: If the client does not do so, that's a violation of the challenge
7926: protocols and the connection will be failed.
7927:
7928: =item (Red) No manager table. Nobody can manage!!
7929:
7930: lond has the concept of privileged hosts that
7931: can perform remote management function such
7932: as update the hosts.tab. The manager hosts
7933: are described in the
7934: ~httpd/lonTabs/managers.tab file.
7935: this message is logged if this file is missing.
7936:
7937:
7938: =item (Green) Registering manager <dnsname> as <cluster_name> with <ipaddress>
7939:
7940: Reports the successful parse and registration
7941: of a specific manager.
7942:
7943: =item Green existing host <clustername:dnsname>
7944:
7945: The manager host is already defined in the hosts.tab
7946: the information in that table, rather than the info in the
7947: manager table will be used to determine the manager's ip.
7948:
7949: =item (Red) Unable to craete <filename>
7950:
7951: lond has been asked to create new versions of an administrative
7952: file (by a manager). When this is done, the new file is created
7953: in a temp file and then renamed into place so that there are always
7954: usable administrative files, even if the update fails. This failure
7955: message means that the temp file could not be created.
7956: The update is abandoned, and the old file is available for use.
7957:
7958: =item (Green) CopyFile from <oldname> to <newname> failed
7959:
7960: In an update of administrative files, the copy of the existing file to a
7961: backup file failed. The installation of the new file may still succeed,
7962: but there will not be a back up file to rever to (this should probably
7963: be yellow).
7964:
7965: =item (Green) Pushfile: backed up <oldname> to <newname>
7966:
7967: See above, the backup of the old administrative file succeeded.
7968:
7969: =item (Red) Pushfile: Unable to install <filename> <reason>
7970:
7971: The new administrative file could not be installed. In this case,
7972: the old administrative file is still in use.
7973:
7974: =item (Green) Installed new < filename>.
7975:
7976: The new administrative file was successfullly installed.
7977:
7978: =item (Red) Reinitializing lond pid=<pid>
7979:
7980: The lonc child process <pid> will be sent a USR2
7981: signal.
7982:
7983: =item (Red) Reinitializing self
7984:
7985: We've been asked to re-read our administrative files,and
7986: are doing so.
7987:
7988: =item (Yellow) error:Invalid process identifier <ident>
7989:
7990: A reinit command was received, but the target part of the
7991: command was not valid. It must be either
7992: 'lond' or 'lonc' but was <ident>
7993:
7994: =item (Green) isValideditCommand checking: Command = <command> Key = <key> newline = <newline>
7995:
7996: Checking to see if lond has been handed a valid edit
7997: command. It is possible the edit command is not valid
7998: in that case there are no log messages to indicate that.
7999:
8000: =item Result of password change for <username> pwchange_success
8001:
8002: The password for <username> was
8003: successfully changed.
8004:
8005: =item Unable to open <user> passwd to change password
8006:
8007: Could not rewrite the
8008: internal password file for a user
8009:
8010: =item Result of password change for <user> : <result>
8011:
8012: A unix password change for <user> was attempted
8013: and the pipe returned <result>
8014:
8015: =item LWP GET: <message> for <fname> (<remoteurl>)
8016:
8017: The lightweight process fetch for a resource failed
8018: with <message> the local filename that should
8019: have existed/been created was <fname> the
8020: corresponding URI: <remoteurl> This is emitted in several
8021: places.
8022:
8023: =item Unable to move <transname> to <destname>
8024:
8025: From fetch_user_file_handler - the user file was replicated but could not
8026: be mv'd to its final location.
8027:
8028: =item Looking for <domain> <username>
8029:
8030: From user_has_session_handler - This should be a Debug call instead
8031: it indicates lond is about to check whether the specified user has a
8032: session active on the specified domain on the local host.
8033:
8034: =item Client <ip> (<name>) hanging up: <input>
8035:
8036: lond has been asked to exit by its client. The <ip> and <name> identify the
8037: client systemand <input> is the full exit command sent to the server.
8038:
8039: =item Red CRITICAL: ABNORMAL EXIT. child <pid> for server <hostname> died through a crass with this error->[<message>].
8040:
8041: A lond child terminated. NOte that this termination can also occur when the
8042: child receives the QUIT or DIE signals. <pid> is the process id of the child,
8043: <hostname> the host lond is working for, and <message> the reason the child died
8044: to the best of our ability to get it (I would guess that any numeric value
8045: represents and errno value). This is immediately followed by
8046:
8047: =item Famous last words: Catching exception - <log>
8048:
8049: Where log is some recent information about the state of the child.
8050:
8051: =item Red CRITICAL: TIME OUT <pid>
8052:
8053: Some timeout occured for server <pid>. THis is normally a timeout on an LWP
8054: doing an HTTP::GET.
8055:
8056: =item child <pid> died
8057:
8058: The reaper caught a SIGCHILD for the lond child process <pid>
8059: This should be modified to also display the IP of the dying child
8060: $children{$pid}
8061:
8062: =item Unknown child 0 died
8063: A child died but the wait for it returned a pid of zero which really should not
8064: ever happen.
8065:
8066: =item Child <which> - <pid> looks like we missed it's death
8067:
8068: When a sigchild is received, the reaper process checks all children to see if they are
8069: alive. If children are dying quite quickly, the lack of signal queuing can mean
8070: that a signal hearalds the death of more than one child. If so this message indicates
8071: which other one died. <which> is the ip of a dead child
8072:
8073: =item Free socket: <shutdownretval>
8074:
8075: The HUNTSMAN sub was called due to a SIGINT in a child process. The socket is being shutdown.
8076: for whatever reason, <shutdownretval> is printed but in fact shutdown() is not documented
8077: to return anything. This is followed by:
8078:
8079: =item Red CRITICAL: Shutting down
8080:
8081: Just prior to exit.
8082:
8083: =item Free socket: <shutdownretval>
8084:
8085: The HUPSMAN sub was called due to a SIGHUP. all children get killsed, and lond execs itself.
8086: This is followed by:
8087:
8088: =item (Red) CRITICAL: Restarting
8089:
8090: lond is about to exec itself to restart.
8091:
8092: =item (Blue) Updating connections
8093:
8094: (In response to a USR2). All the children (except the one for localhost)
8095: are about to be killed, the hosts tab reread, and Apache reloaded via apachereload.
8096:
8097: =item (Blue) UpdateHosts killing child <pid> for ip <ip>
8098:
8099: Due to USR2 as above.
8100:
8101: =item (Green) keeping child for ip <ip> (pid = <pid>)
8102:
8103: In response to USR2 as above, the child indicated is not being restarted because
8104: it's assumed that we'll always need a child for the localhost.
8105:
8106:
8107: =item Going to check on the children
8108:
8109: Parent is about to check on the health of the child processes.
8110: Note that this is in response to a USR1 sent to the parent lond.
8111: there may be one or more of the next two messages:
8112:
8113: =item <pid> is dead
8114:
8115: A child that we have in our child hash as alive has evidently died.
8116:
8117: =item Child <pid> did not respond
8118:
8119: In the health check the child <pid> did not update/produce a pid_.txt
8120: file when sent it's USR1 signal. That process is killed with a 9 signal, as it's
8121: assumed to be hung in some un-fixable way.
8122:
8123: =item Finished checking children
8124:
8125: Master processs's USR1 processing is cojmplete.
8126:
8127: =item (Red) CRITICAL: ------- Starting ------
8128:
8129: (There are more '-'s on either side). Lond has forked itself off to
8130: form a new session and is about to start actual initialization.
8131:
8132: =item (Green) Attempting to start child (<client>)
8133:
8134: Started a new child process for <client>. Client is IO::Socket object
8135: connected to the child. This was as a result of a TCP/IP connection from a client.
8136:
8137: =item Unable to determine who caller was, getpeername returned nothing
8138:
8139: In child process initialization. either getpeername returned undef or
8140: a zero sized object was returned. Processing continues, but in my opinion,
8141: this should be cause for the child to exit.
8142:
8143: =item Unable to determine clientip
8144:
8145: In child process initialization. The peer address from getpeername was not defined.
8146: The client address is stored as "Unavailable" and processing continues.
8147:
8148: =item (Yellow) INFO: Connection <ip> <name> connection type = <type>
8149:
8150: In child initialization. A good connectionw as received from <ip>.
8151:
8152: =over 2
8153:
8154: =item <name>
8155:
8156: is the name of the client from hosts.tab.
8157:
8158: =item <type>
8159:
8160: Is the connection type which is either
8161:
8162: =over 2
8163:
8164: =item manager
8165:
8166: The connection is from a manager node, not in hosts.tab
8167:
8168: =item client
8169:
8170: the connection is from a non-manager in the hosts.tab
8171:
8172: =item both
8173:
8174: The connection is from a manager in the hosts.tab.
8175:
8176: =back
8177:
8178: =back
8179:
8180: =item (Blue) Certificates not installed -- trying insecure auth
8181:
8182: One of the certificate file, key file or
8183: certificate authority file could not be found for a client attempting
8184: SSL connection intiation. COnnection will be attemptied in in-secure mode.
8185: (this would be a system with an up to date lond that has not gotten a
8186: certificate from us).
8187:
8188: =item (Green) Successful local authentication
8189:
8190: A local connection successfully negotiated the encryption key.
8191: In this case the IDEA key is in a file (that is hopefully well protected).
8192:
8193: =item (Green) Successful ssl authentication with <client>
8194:
8195: The client (<client> is the peer's name in hosts.tab), has successfully
8196: negotiated an SSL connection with this child process.
8197:
8198: =item (Green) Successful insecure authentication with <client>
8199:
8200:
8201: The client has successfully negotiated an insecure connection withthe child process.
8202:
8203: =item (Yellow) Attempted insecure connection disallowed
8204:
8205: The client attempted and failed to successfully negotiate a successful insecure
8206: connection. This can happen either because the variable londAllowInsecure is false
8207: or undefined, or becuse the child did not successfully echo back the challenge
8208: string.
8209:
8210:
8211: =back
8212:
1.441 raeburn 8213: =back
8214:
1.409 foxr 8215:
8216: =cut
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