Annotation of loncom/lond, revision 1.517
1.1 albertel 1: #!/usr/bin/perl
2: # The LearningOnline Network
3: # lond "LON Daemon" Server (port "LOND" 5663)
1.60 www 4: #
1.517 ! raeburn 5: # $Id: lond,v 1.516 2015/06/14 00:43:51 raeburn Exp $
1.60 www 6: #
7: # Copyright Michigan State University Board of Trustees
8: #
9: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
10: #
11: # LON-CAPA is free software; you can redistribute it and/or modify
12: # it under the terms of the GNU General Public License as published by
1.167 foxr 13: # the Free Software Foundation; either version 2 of the License, or
1.60 www 14: # (at your option) any later version.
15: #
16: # LON-CAPA is distributed in the hope that it will be useful,
17: # but WITHOUT ANY WARRANTY; without even the implied warranty of
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;
1.490 droeschl 37: use LONCAPA::Lond;
1.80 harris41 38:
1.1 albertel 39: use IO::Socket;
40: use IO::File;
1.126 albertel 41: #use Apache::File;
1.1 albertel 42: use POSIX;
43: use Crypt::IDEA;
44: use LWP::UserAgent();
1.347 raeburn 45: use Digest::MD5 qw(md5_hex);
1.3 www 46: use GDBM_File;
1.91 albertel 47: use Authen::Krb5;
1.49 albertel 48: use localauth;
1.193 raeburn 49: use localenroll;
1.265 albertel 50: use localstudentphoto;
1.143 foxr 51: use File::Copy;
1.292 albertel 52: use File::Find;
1.200 matthew 53: use LONCAPA::lonlocal;
54: use LONCAPA::lonssl;
1.221 albertel 55: use Fcntl qw(:flock);
1.383 raeburn 56: use Apache::lonnet;
1.472 raeburn 57: use Mail::Send;
1.1 albertel 58:
1.463 foxr 59: my $DEBUG = 0; # Non zero to enable debug log entries.
1.77 foxr 60:
1.57 www 61: my $status='';
62: my $lastlog='';
63:
1.517 ! raeburn 64: my $VERSION='$Revision: 1.516 $'; #' stupid emacs
1.121 albertel 65: my $remoteVERSION;
1.214 foxr 66: my $currenthostid="default";
1.115 albertel 67: my $currentdomainid;
1.134 albertel 68:
69: my $client;
1.200 matthew 70: my $clientip; # IP address of client.
71: my $clientname; # LonCAPA name of client.
1.448 raeburn 72: my $clientversion; # LonCAPA version running on client.
73: my $clienthomedom; # LonCAPA domain of homeID for client.
74: # primary library server.
1.140 foxr 75:
1.134 albertel 76: my $server;
1.200 matthew 77:
78: my $keymode;
1.198 foxr 79:
1.207 foxr 80: my $cipher; # Cipher key negotiated with client
81: my $tmpsnum = 0; # Id of tmpputs.
82:
1.178 foxr 83: #
84: # Connection type is:
85: # client - All client actions are allowed
86: # manager - only management functions allowed.
87: # both - Both management and client actions are allowed
88: #
1.161 foxr 89:
1.178 foxr 90: my $ConnectionType;
1.161 foxr 91:
1.178 foxr 92: my %managers; # Ip -> manager names
1.161 foxr 93:
1.178 foxr 94: my %perlvar; # Will have the apache conf defined perl vars.
1.134 albertel 95:
1.480 raeburn 96: my $dist;
97:
1.178 foxr 98: #
1.207 foxr 99: # The hash below is used for command dispatching, and is therefore keyed on the request keyword.
100: # Each element of the hash contains a reference to an array that contains:
101: # A reference to a sub that executes the request corresponding to the keyword.
102: # A flag that is true if the request must be encoded to be acceptable.
103: # A mask with bits as follows:
104: # CLIENT_OK - Set when the function is allowed by ordinary clients
105: # MANAGER_OK - Set when the function is allowed to manager clients.
106: #
107: my $CLIENT_OK = 1;
108: my $MANAGER_OK = 2;
109: my %Dispatcher;
110:
111:
112: #
1.178 foxr 113: # The array below are password error strings."
114: #
115: my $lastpwderror = 13; # Largest error number from lcpasswd.
116: my @passwderrors = ("ok",
1.287 foxr 117: "pwchange_failure - lcpasswd must be run as user 'www'",
118: "pwchange_failure - lcpasswd got incorrect number of arguments",
119: "pwchange_failure - lcpasswd did not get the right nubmer of input text lines",
120: "pwchange_failure - lcpasswd too many simultaneous pwd changes in progress",
121: "pwchange_failure - lcpasswd User does not exist.",
122: "pwchange_failure - lcpasswd Incorrect current passwd",
123: "pwchange_failure - lcpasswd Unable to su to root.",
124: "pwchange_failure - lcpasswd Cannot set new passwd.",
125: "pwchange_failure - lcpasswd Username has invalid characters",
126: "pwchange_failure - lcpasswd Invalid characters in password",
127: "pwchange_failure - lcpasswd User already exists",
128: "pwchange_failure - lcpasswd Something went wrong with user addition.",
129: "pwchange_failure - lcpasswd Password mismatch",
130: "pwchange_failure - lcpasswd Error filename is invalid");
1.97 foxr 131:
132:
1.412 foxr 133: # This array are the errors from lcinstallfile:
134:
135: my @installerrors = ("ok",
136: "Initial user id of client not that of www",
137: "Usage error, not enough command line arguments",
1.500 bisitz 138: "Source filename does not exist",
139: "Destination filename does not exist",
1.412 foxr 140: "Some file operation failed",
141: "Invalid table filename."
142: );
1.207 foxr 143:
144: #
145: # Statistics that are maintained and dislayed in the status line.
146: #
1.212 foxr 147: my $Transactions = 0; # Number of attempted transactions.
148: my $Failures = 0; # Number of transcations failed.
1.207 foxr 149:
150: # ResetStatistics:
151: # Resets the statistics counters:
152: #
153: sub ResetStatistics {
154: $Transactions = 0;
155: $Failures = 0;
156: }
157:
1.200 matthew 158: #------------------------------------------------------------------------
159: #
160: # LocalConnection
161: # Completes the formation of a locally authenticated connection.
162: # This function will ensure that the 'remote' client is really the
163: # local host. If not, the connection is closed, and the function fails.
164: # If so, initcmd is parsed for the name of a file containing the
165: # IDEA session key. The fie is opened, read, deleted and the session
166: # key returned to the caller.
167: #
168: # Parameters:
169: # $Socket - Socket open on client.
170: # $initcmd - The full text of the init command.
171: #
172: # Returns:
173: # IDEA session key on success.
174: # undef on failure.
175: #
176: sub LocalConnection {
177: my ($Socket, $initcmd) = @_;
1.373 albertel 178: Debug("Attempting local connection: $initcmd client: $clientip");
1.277 albertel 179: if($clientip ne "127.0.0.1") {
1.200 matthew 180: &logthis('<font color="red"> LocalConnection rejecting non local: '
1.373 albertel 181: ."$clientip ne 127.0.0.1 </font>");
1.200 matthew 182: close $Socket;
183: return undef;
1.224 foxr 184: } else {
1.200 matthew 185: chomp($initcmd); # Get rid of \n in filename.
186: my ($init, $type, $name) = split(/:/, $initcmd);
187: Debug(" Init command: $init $type $name ");
188:
189: # Require that $init = init, and $type = local: Otherwise
190: # the caller is insane:
191:
192: if(($init ne "init") && ($type ne "local")) {
193: &logthis('<font color = "red"> LocalConnection: caller is insane! '
194: ."init = $init, and type = $type </font>");
195: close($Socket);;
196: return undef;
197:
198: }
199: # Now get the key filename:
200:
201: my $IDEAKey = lonlocal::ReadKeyFile($name);
202: return $IDEAKey;
203: }
204: }
205: #------------------------------------------------------------------------------
206: #
207: # SSLConnection
208: # Completes the formation of an ssh authenticated connection. The
209: # socket is promoted to an ssl socket. If this promotion and the associated
210: # certificate exchange are successful, the IDEA key is generated and sent
211: # to the remote peer via the SSL tunnel. The IDEA key is also returned to
212: # the caller after the SSL tunnel is torn down.
213: #
214: # Parameters:
215: # Name Type Purpose
216: # $Socket IO::Socket::INET Plaintext socket.
217: #
218: # Returns:
219: # IDEA key on success.
220: # undef on failure.
221: #
222: sub SSLConnection {
223: my $Socket = shift;
224:
225: Debug("SSLConnection: ");
226: my $KeyFile = lonssl::KeyFile();
227: if(!$KeyFile) {
228: my $err = lonssl::LastError();
229: &logthis("<font color=\"red\"> CRITICAL"
230: ."Can't get key file $err </font>");
231: return undef;
232: }
233: my ($CACertificate,
234: $Certificate) = lonssl::CertificateFile();
235:
236:
237: # If any of the key, certificate or certificate authority
238: # certificate filenames are not defined, this can't work.
239:
240: if((!$Certificate) || (!$CACertificate)) {
241: my $err = lonssl::LastError();
242: &logthis("<font color=\"red\"> CRITICAL"
243: ."Can't get certificates: $err </font>");
244:
245: return undef;
246: }
247: Debug("Key: $KeyFile CA: $CACertificate Cert: $Certificate");
248:
249: # Indicate to our peer that we can procede with
250: # a transition to ssl authentication:
251:
252: print $Socket "ok:ssl\n";
253:
254: Debug("Approving promotion -> ssl");
255: # And do so:
256:
257: my $SSLSocket = lonssl::PromoteServerSocket($Socket,
258: $CACertificate,
259: $Certificate,
260: $KeyFile);
261: if(! ($SSLSocket) ) { # SSL socket promotion failed.
262: my $err = lonssl::LastError();
263: &logthis("<font color=\"red\"> CRITICAL "
264: ."SSL Socket promotion failed: $err </font>");
265: return undef;
266: }
267: Debug("SSL Promotion successful");
268:
269: #
270: # The only thing we'll use the socket for is to send the IDEA key
271: # to the peer:
272:
273: my $Key = lonlocal::CreateCipherKey();
274: print $SSLSocket "$Key\n";
275:
276: lonssl::Close($SSLSocket);
277:
278: Debug("Key exchange complete: $Key");
279:
280: return $Key;
281: }
282: #
283: # InsecureConnection:
284: # If insecure connections are allowd,
285: # exchange a challenge with the client to 'validate' the
286: # client (not really, but that's the protocol):
287: # We produce a challenge string that's sent to the client.
288: # The client must then echo the challenge verbatim to us.
289: #
290: # Parameter:
291: # Socket - Socket open on the client.
292: # Returns:
293: # 1 - success.
294: # 0 - failure (e.g.mismatch or insecure not allowed).
295: #
296: sub InsecureConnection {
297: my $Socket = shift;
298:
299: # Don't even start if insecure connections are not allowed.
300:
301: if(! $perlvar{londAllowInsecure}) { # Insecure connections not allowed.
302: return 0;
303: }
304:
305: # Fabricate a challenge string and send it..
306:
307: my $challenge = "$$".time; # pid + time.
308: print $Socket "$challenge\n";
309: &status("Waiting for challenge reply");
310:
311: my $answer = <$Socket>;
312: $answer =~s/\W//g;
313: if($challenge eq $answer) {
314: return 1;
1.224 foxr 315: } else {
1.200 matthew 316: logthis("<font color='blue'>WARNING client did not respond to challenge</font>");
317: &status("No challenge reqply");
318: return 0;
319: }
320:
321:
322: }
1.251 foxr 323: #
324: # Safely execute a command (as long as it's not a shel command and doesn
325: # not require/rely on shell escapes. The function operates by doing a
326: # a pipe based fork and capturing stdout and stderr from the pipe.
327: #
328: # Formal Parameters:
329: # $line - A line of text to be executed as a command.
330: # Returns:
331: # The output from that command. If the output is multiline the caller
332: # must know how to split up the output.
333: #
334: #
335: sub execute_command {
336: my ($line) = @_;
337: my @words = split(/\s/, $line); # Bust the command up into words.
338: my $output = "";
339:
340: my $pid = open(CHILD, "-|");
341:
342: if($pid) { # Parent process
343: Debug("In parent process for execute_command");
344: my @data = <CHILD>; # Read the child's outupt...
345: close CHILD;
346: foreach my $output_line (@data) {
347: Debug("Adding $output_line");
348: $output .= $output_line; # Presumably has a \n on it.
349: }
350:
351: } else { # Child process
352: close (STDERR);
353: open (STDERR, ">&STDOUT");# Combine stderr, and stdout...
354: exec(@words); # won't return.
355: }
356: return $output;
357: }
358:
1.200 matthew 359:
1.140 foxr 360: # GetCertificate: Given a transaction that requires a certificate,
361: # this function will extract the certificate from the transaction
362: # request. Note that at this point, the only concept of a certificate
363: # is the hostname to which we are connected.
364: #
365: # Parameter:
366: # request - The request sent by our client (this parameterization may
367: # need to change when we really use a certificate granting
368: # authority.
369: #
370: sub GetCertificate {
371: my $request = shift;
372:
373: return $clientip;
374: }
1.161 foxr 375:
1.178 foxr 376: #
377: # Return true if client is a manager.
378: #
379: sub isManager {
380: return (($ConnectionType eq "manager") || ($ConnectionType eq "both"));
381: }
382: #
383: # Return tru if client can do client functions
384: #
385: sub isClient {
386: return (($ConnectionType eq "client") || ($ConnectionType eq "both"));
387: }
1.161 foxr 388:
389:
1.156 foxr 390: #
391: # ReadManagerTable: Reads in the current manager table. For now this is
392: # done on each manager authentication because:
393: # - These authentications are not frequent
394: # - This allows dynamic changes to the manager table
395: # without the need to signal to the lond.
396: #
397: sub ReadManagerTable {
398:
1.412 foxr 399: &Debug("Reading manager table");
1.156 foxr 400: # Clean out the old table first..
401:
1.166 foxr 402: foreach my $key (keys %managers) {
403: delete $managers{$key};
404: }
405:
406: my $tablename = $perlvar{'lonTabDir'}."/managers.tab";
407: if (!open (MANAGERS, $tablename)) {
1.473 raeburn 408: my $hostname = &Apache::lonnet::hostname($perlvar{'lonHostID'});
409: if (&Apache::lonnet::is_LC_dns($hostname)) {
1.472 raeburn 410: &logthis('<font color="red">No manager table. Nobody can manage!!</font>');
411: }
412: return;
1.166 foxr 413: }
414: while(my $host = <MANAGERS>) {
415: chomp($host);
416: if ($host =~ "^#") { # Comment line.
417: next;
418: }
1.368 albertel 419: if (!defined &Apache::lonnet::get_host_ip($host)) { # This is a non cluster member
1.161 foxr 420: # The entry is of the form:
421: # cluname:hostname
422: # cluname - A 'cluster hostname' is needed in order to negotiate
423: # the host key.
424: # hostname- The dns name of the host.
425: #
1.166 foxr 426: my($cluname, $dnsname) = split(/:/, $host);
427:
428: my $ip = gethostbyname($dnsname);
429: if(defined($ip)) { # bad names don't deserve entry.
430: my $hostip = inet_ntoa($ip);
431: $managers{$hostip} = $cluname;
432: logthis('<font color="green"> registering manager '.
433: "$dnsname as $cluname with $hostip </font>\n");
434: }
435: } else {
436: logthis('<font color="green"> existing host'." $host</font>\n");
1.472 raeburn 437: $managers{&Apache::lonnet::get_host_ip($host)} = $host; # Use info from cluster tab if cluster memeber
1.166 foxr 438: }
439: }
1.156 foxr 440: }
1.140 foxr 441:
442: #
443: # ValidManager: Determines if a given certificate represents a valid manager.
444: # in this primitive implementation, the 'certificate' is
445: # just the connecting loncapa client name. This is checked
446: # against a valid client list in the configuration.
447: #
448: #
449: sub ValidManager {
450: my $certificate = shift;
451:
1.163 foxr 452: return isManager;
1.140 foxr 453: }
454: #
1.143 foxr 455: # CopyFile: Called as part of the process of installing a
456: # new configuration file. This function copies an existing
457: # file to a backup file.
458: # Parameters:
459: # oldfile - Name of the file to backup.
460: # newfile - Name of the backup file.
461: # Return:
462: # 0 - Failure (errno has failure reason).
463: # 1 - Success.
464: #
465: sub CopyFile {
1.192 foxr 466:
467: my ($oldfile, $newfile) = @_;
1.143 foxr 468:
1.281 matthew 469: if (! copy($oldfile,$newfile)) {
470: return 0;
1.143 foxr 471: }
1.281 matthew 472: chmod(0660, $newfile);
473: return 1;
1.143 foxr 474: }
1.157 foxr 475: #
476: # Host files are passed out with externally visible host IPs.
477: # If, for example, we are behind a fire-wall or NAT host, our
478: # internally visible IP may be different than the externally
479: # visible IP. Therefore, we always adjust the contents of the
480: # host file so that the entry for ME is the IP that we believe
481: # we have. At present, this is defined as the entry that
482: # DNS has for us. If by some chance we are not able to get a
483: # DNS translation for us, then we assume that the host.tab file
484: # is correct.
485: # BUGBUGBUG - in the future, we really should see if we can
486: # easily query the interface(s) instead.
487: # Parameter(s):
488: # contents - The contents of the host.tab to check.
489: # Returns:
490: # newcontents - The adjusted contents.
491: #
492: #
493: sub AdjustHostContents {
494: my $contents = shift;
495: my $adjusted;
496: my $me = $perlvar{'lonHostID'};
497:
1.354 albertel 498: foreach my $line (split(/\n/,$contents)) {
1.472 raeburn 499: if(!(($line eq "") || ($line =~ /^ *\#/) || ($line =~ /^ *$/) ||
500: ($line =~ /^\s*\^/))) {
1.157 foxr 501: chomp($line);
502: my ($id,$domain,$role,$name,$ip,$maxcon,$idleto,$mincon)=split(/:/,$line);
503: if ($id eq $me) {
1.354 albertel 504: my $ip = gethostbyname($name);
505: my $ipnew = inet_ntoa($ip);
506: $ip = $ipnew;
1.157 foxr 507: # Reconstruct the host line and append to adjusted:
508:
1.354 albertel 509: my $newline = "$id:$domain:$role:$name:$ip";
510: if($maxcon ne "") { # Not all hosts have loncnew tuning params
511: $newline .= ":$maxcon:$idleto:$mincon";
512: }
513: $adjusted .= $newline."\n";
1.157 foxr 514:
1.354 albertel 515: } else { # Not me, pass unmodified.
516: $adjusted .= $line."\n";
517: }
1.157 foxr 518: } else { # Blank or comment never re-written.
519: $adjusted .= $line."\n"; # Pass blanks and comments as is.
520: }
1.354 albertel 521: }
522: return $adjusted;
1.157 foxr 523: }
1.143 foxr 524: #
525: # InstallFile: Called to install an administrative file:
1.412 foxr 526: # - The file is created int a temp directory called <name>.tmp
527: # - lcinstall file is called to install the file.
528: # since the web app has no direct write access to the table directory
1.143 foxr 529: #
530: # Parameters:
531: # Name of the file
532: # File Contents.
533: # Return:
534: # nonzero - success.
535: # 0 - failure and $! has an errno.
1.412 foxr 536: # Assumptions:
537: # File installtion is a relatively infrequent
1.143 foxr 538: #
539: sub InstallFile {
1.192 foxr 540:
541: my ($Filename, $Contents) = @_;
1.412 foxr 542: # my $TempFile = $Filename.".tmp";
543: my $exedir = $perlvar{'lonDaemons'};
544: my $tmpdir = $exedir.'/tmp/';
545: my $TempFile = $tmpdir."TempTableFile.tmp";
1.143 foxr 546:
547: # Open the file for write:
548:
549: my $fh = IO::File->new("> $TempFile"); # Write to temp.
550: if(!(defined $fh)) {
551: &logthis('<font color="red"> Unable to create '.$TempFile."</font>");
552: return 0;
553: }
554: # write the contents of the file:
555:
556: print $fh ($Contents);
557: $fh->close; # In case we ever have a filesystem w. locking
558:
1.412 foxr 559: chmod(0664, $TempFile); # Everyone can write it.
560:
561: # Use lcinstall file to put the file in the table directory...
562:
563: &Debug("Opening pipe to $exedir/lcinstallfile $TempFile $Filename");
564: my $pf = IO::File->new("| $exedir/lcinstallfile $TempFile $Filename > $exedir/logs/lcinstallfile.log");
565: close $pf;
566: my $err = $?;
567: &Debug("Status is $err");
568: if ($err != 0) {
569: my $msg = $err;
570: if ($err < @installerrors) {
571: $msg = $installerrors[$err];
572: }
573: &logthis("Install failed for table file $Filename : $msg");
574: return 0;
575: }
576:
577: # Remove the temp file:
1.143 foxr 578:
1.412 foxr 579: unlink($TempFile);
1.143 foxr 580:
581: return 1;
582: }
1.200 matthew 583:
584:
1.169 foxr 585: #
586: # ConfigFileFromSelector: converts a configuration file selector
1.411 foxr 587: # into a configuration file pathname.
1.472 raeburn 588: # Supports the following file selectors:
589: # hosts, domain, dns_hosts, dns_domain
1.411 foxr 590: #
1.169 foxr 591: #
592: # Parameters:
593: # selector - Configuration file selector.
594: # Returns:
595: # Full path to the file or undef if the selector is invalid.
596: #
597: sub ConfigFileFromSelector {
598: my $selector = shift;
599: my $tablefile;
600:
601: my $tabledir = $perlvar{'lonTabDir'}.'/';
1.472 raeburn 602: if (($selector eq "hosts") || ($selector eq "domain") ||
603: ($selector eq "dns_hosts") || ($selector eq "dns_domain")) {
1.411 foxr 604: $tablefile = $tabledir.$selector.'.tab';
1.169 foxr 605: }
606: return $tablefile;
607: }
1.143 foxr 608: #
1.141 foxr 609: # PushFile: Called to do an administrative push of a file.
610: # - Ensure the file being pushed is one we support.
611: # - Backup the old file to <filename.saved>
612: # - Separate the contents of the new file out from the
613: # rest of the request.
614: # - Write the new file.
615: # Parameter:
616: # Request - The entire user request. This consists of a : separated
617: # string pushfile:tablename:contents.
618: # NOTE: The contents may have :'s in it as well making things a bit
619: # more interesting... but not much.
620: # Returns:
621: # String to send to client ("ok" or "refused" if bad file).
622: #
623: sub PushFile {
1.510 raeburn 624: my $request = shift;
1.141 foxr 625: my ($command, $filename, $contents) = split(":", $request, 3);
1.412 foxr 626: &Debug("PushFile");
1.141 foxr 627:
628: # At this point in time, pushes for only the following tables are
629: # supported:
630: # hosts.tab ($filename eq host).
631: # domain.tab ($filename eq domain).
1.472 raeburn 632: # dns_hosts.tab ($filename eq dns_host).
633: # dns_domain.tab ($filename eq dns_domain).
1.141 foxr 634: # Construct the destination filename or reject the request.
635: #
636: # lonManage is supposed to ensure this, however this session could be
637: # part of some elaborate spoof that managed somehow to authenticate.
638: #
639:
1.169 foxr 640:
641: my $tablefile = ConfigFileFromSelector($filename);
642: if(! (defined $tablefile)) {
1.141 foxr 643: return "refused";
644: }
1.412 foxr 645:
1.157 foxr 646: # If the file being pushed is the host file, we adjust the entry for ourself so that the
647: # IP will be our current IP as looked up in dns. Note this is only 99% good as it's possible
648: # to conceive of conditions where we don't have a DNS entry locally. This is possible in a
649: # network sense but it doesn't make much sense in a LonCAPA sense so we ignore (for now)
650: # that possibilty.
651:
652: if($filename eq "host") {
653: $contents = AdjustHostContents($contents);
1.510 raeburn 654: } elsif ($filename eq 'dns_host' || $filename eq 'dns_domain') {
655: if ($contents eq '') {
656: &logthis('<font color="red"> Pushfile: unable to install '
657: .$tablefile." - no data received from push. </font>");
658: return 'error: push had no data';
659: }
660: if (&Apache::lonnet::get_host_ip($clientname)) {
661: my $clienthost = &Apache::lonnet::hostname($clientname);
662: if ($managers{$clientip} eq $clientname) {
663: my $clientprotocol = $Apache::lonnet::protocol{$clientname};
664: $clientprotocol = 'http' if ($clientprotocol ne 'https');
665: my $url = '/adm/'.$filename;
666: $url =~ s{_}{/};
667: my $ua=new LWP::UserAgent;
668: $ua->timeout(60);
669: my $request=new HTTP::Request('GET',"$clientprotocol://$clienthost$url");
670: my $response=$ua->request($request);
671: if ($response->is_error()) {
672: &logthis('<font color="red"> Pushfile: unable to install '
673: .$tablefile." - error attempting to pull data. </font>");
674: return 'error: pull failed';
675: } else {
676: my $result = $response->content;
677: chomp($result);
678: unless ($result eq $contents) {
679: &logthis('<font color="red"> Pushfile: unable to install '
680: .$tablefile." - pushed data and pulled data differ. </font>");
681: my $pushleng = length($contents);
682: my $pullleng = length($result);
683: if ($pushleng != $pullleng) {
684: return "error: $pushleng vs $pullleng bytes";
685: } else {
686: return "error: mismatch push and pull";
687: }
688: }
689: }
690: }
691: }
1.157 foxr 692: }
693:
1.141 foxr 694: # Install the new file:
695:
1.412 foxr 696: &logthis("Installing new $tablefile contents:\n$contents");
1.143 foxr 697: if(!InstallFile($tablefile, $contents)) {
698: &logthis('<font color="red"> Pushfile: unable to install '
1.145 foxr 699: .$tablefile." $! </font>");
1.143 foxr 700: return "error:$!";
1.224 foxr 701: } else {
1.143 foxr 702: &logthis('<font color="green"> Installed new '.$tablefile
1.473 raeburn 703: ." - transaction by: $clientname ($clientip)</font>");
1.472 raeburn 704: my $adminmail = $perlvar{'lonAdmEMail'};
705: my $admindom = &Apache::lonnet::host_domain($perlvar{'lonHostID'});
706: if ($admindom ne '') {
707: my %domconfig =
708: &Apache::lonnet::get_dom('configuration',['contacts'],$admindom);
709: if (ref($domconfig{'contacts'}) eq 'HASH') {
710: if ($domconfig{'contacts'}{'adminemail'} ne '') {
711: $adminmail = $domconfig{'contacts'}{'adminemail'};
712: }
713: }
714: }
715: if ($adminmail =~ /^[^\@]+\@[^\@]+$/) {
716: my $msg = new Mail::Send;
717: $msg->to($adminmail);
718: $msg->subject('LON-CAPA DNS update on '.$perlvar{'lonHostID'});
719: $msg->add('Content-type','text/plain; charset=UTF-8');
720: if (my $fh = $msg->open()) {
721: print $fh 'Update to '.$tablefile.' from Cluster Manager '.
1.473 raeburn 722: "$clientname ($clientip)\n";
1.472 raeburn 723: $fh->close;
724: }
725: }
1.143 foxr 726: }
727:
1.141 foxr 728: # Indicate success:
729:
730: return "ok";
731:
732: }
1.145 foxr 733:
734: #
735: # Called to re-init either lonc or lond.
736: #
737: # Parameters:
738: # request - The full request by the client. This is of the form
739: # reinit:<process>
740: # where <process> is allowed to be either of
741: # lonc or lond
742: #
743: # Returns:
744: # The string to be sent back to the client either:
745: # ok - Everything worked just fine.
746: # error:why - There was a failure and why describes the reason.
747: #
748: #
749: sub ReinitProcess {
750: my $request = shift;
751:
1.146 foxr 752:
753: # separate the request (reinit) from the process identifier and
754: # validate it producing the name of the .pid file for the process.
755: #
756: #
757: my ($junk, $process) = split(":", $request);
1.147 foxr 758: my $processpidfile = $perlvar{'lonDaemons'}.'/logs/';
1.146 foxr 759: if($process eq 'lonc') {
760: $processpidfile = $processpidfile."lonc.pid";
1.147 foxr 761: if (!open(PIDFILE, "< $processpidfile")) {
762: return "error:Open failed for $processpidfile";
763: }
764: my $loncpid = <PIDFILE>;
765: close(PIDFILE);
766: logthis('<font color="red"> Reinitializing lonc pid='.$loncpid
767: ."</font>");
768: kill("USR2", $loncpid);
1.146 foxr 769: } elsif ($process eq 'lond') {
1.147 foxr 770: logthis('<font color="red"> Reinitializing self (lond) </font>');
771: &UpdateHosts; # Lond is us!!
1.146 foxr 772: } else {
773: &logthis('<font color="yellow" Invalid reinit request for '.$process
774: ."</font>");
775: return "error:Invalid process identifier $process";
776: }
1.145 foxr 777: return 'ok';
778: }
1.168 foxr 779: # Validate a line in a configuration file edit script:
780: # Validation includes:
781: # - Ensuring the command is valid.
782: # - Ensuring the command has sufficient parameters
783: # Parameters:
784: # scriptline - A line to validate (\n has been stripped for what it's worth).
1.167 foxr 785: #
1.168 foxr 786: # Return:
787: # 0 - Invalid scriptline.
788: # 1 - Valid scriptline
789: # NOTE:
790: # Only the command syntax is checked, not the executability of the
791: # command.
792: #
793: sub isValidEditCommand {
794: my $scriptline = shift;
795:
796: # Line elements are pipe separated:
797:
798: my ($command, $key, $newline) = split(/\|/, $scriptline);
799: &logthis('<font color="green"> isValideditCommand checking: '.
800: "Command = '$command', Key = '$key', Newline = '$newline' </font>\n");
801:
802: if ($command eq "delete") {
803: #
804: # key with no newline.
805: #
806: if( ($key eq "") || ($newline ne "")) {
807: return 0; # Must have key but no newline.
808: } else {
809: return 1; # Valid syntax.
810: }
1.169 foxr 811: } elsif ($command eq "replace") {
1.168 foxr 812: #
813: # key and newline:
814: #
815: if (($key eq "") || ($newline eq "")) {
816: return 0;
817: } else {
818: return 1;
819: }
1.169 foxr 820: } elsif ($command eq "append") {
821: if (($key ne "") && ($newline eq "")) {
822: return 1;
823: } else {
824: return 0;
825: }
1.168 foxr 826: } else {
827: return 0; # Invalid command.
828: }
829: return 0; # Should not get here!!!
830: }
1.169 foxr 831: #
832: # ApplyEdit - Applies an edit command to a line in a configuration
833: # file. It is the caller's responsiblity to validate the
834: # edit line.
835: # Parameters:
836: # $directive - A single edit directive to apply.
837: # Edit directives are of the form:
838: # append|newline - Appends a new line to the file.
839: # replace|key|newline - Replaces the line with key value 'key'
840: # delete|key - Deletes the line with key value 'key'.
841: # $editor - A config file editor object that contains the
842: # file being edited.
843: #
844: sub ApplyEdit {
1.192 foxr 845:
846: my ($directive, $editor) = @_;
1.169 foxr 847:
848: # Break the directive down into its command and its parameters
849: # (at most two at this point. The meaning of the parameters, if in fact
850: # they exist depends on the command).
851:
852: my ($command, $p1, $p2) = split(/\|/, $directive);
853:
854: if($command eq "append") {
855: $editor->Append($p1); # p1 - key p2 null.
856: } elsif ($command eq "replace") {
857: $editor->ReplaceLine($p1, $p2); # p1 - key p2 = newline.
858: } elsif ($command eq "delete") {
859: $editor->DeleteLine($p1); # p1 - key p2 null.
860: } else { # Should not get here!!!
861: die "Invalid command given to ApplyEdit $command"
862: }
863: }
864: #
865: # AdjustOurHost:
866: # Adjusts a host file stored in a configuration file editor object
867: # for the true IP address of this host. This is necessary for hosts
868: # that live behind a firewall.
869: # Those hosts have a publicly distributed IP of the firewall, but
870: # internally must use their actual IP. We assume that a given
871: # host only has a single IP interface for now.
872: # Formal Parameters:
873: # editor - The configuration file editor to adjust. This
874: # editor is assumed to contain a hosts.tab file.
875: # Strategy:
876: # - Figure out our hostname.
877: # - Lookup the entry for this host.
878: # - Modify the line to contain our IP
879: # - Do a replace for this host.
880: sub AdjustOurHost {
881: my $editor = shift;
882:
883: # figure out who I am.
884:
885: my $myHostName = $perlvar{'lonHostID'}; # LonCAPA hostname.
886:
887: # Get my host file entry.
888:
889: my $ConfigLine = $editor->Find($myHostName);
890: if(! (defined $ConfigLine)) {
891: die "AdjustOurHost - no entry for me in hosts file $myHostName";
892: }
893: # figure out my IP:
894: # Use the config line to get my hostname.
895: # Use gethostbyname to translate that into an IP address.
896: #
1.338 albertel 897: my ($id,$domain,$role,$name,$maxcon,$idleto,$mincon) = split(/:/,$ConfigLine);
1.169 foxr 898: #
899: # Reassemble the config line from the elements in the list.
900: # Note that if the loncnew items were not present before, they will
901: # be now even if they would be empty
902: #
903: my $newConfigLine = $id;
1.338 albertel 904: foreach my $item ($domain, $role, $name, $maxcon, $idleto, $mincon) {
1.169 foxr 905: $newConfigLine .= ":".$item;
906: }
907: # Replace the line:
908:
909: $editor->ReplaceLine($id, $newConfigLine);
910:
911: }
912: #
913: # ReplaceConfigFile:
914: # Replaces a configuration file with the contents of a
915: # configuration file editor object.
916: # This is done by:
917: # - Copying the target file to <filename>.old
918: # - Writing the new file to <filename>.tmp
919: # - Moving <filename.tmp> -> <filename>
920: # This laborious process ensures that the system is never without
921: # a configuration file that's at least valid (even if the contents
922: # may be dated).
923: # Parameters:
924: # filename - Name of the file to modify... this is a full path.
925: # editor - Editor containing the file.
926: #
927: sub ReplaceConfigFile {
1.192 foxr 928:
929: my ($filename, $editor) = @_;
1.168 foxr 930:
1.169 foxr 931: CopyFile ($filename, $filename.".old");
932:
933: my $contents = $editor->Get(); # Get the contents of the file.
934:
935: InstallFile($filename, $contents);
936: }
1.168 foxr 937: #
938: #
939: # Called to edit a configuration table file
1.167 foxr 940: # Parameters:
941: # request - The entire command/request sent by lonc or lonManage
942: # Return:
943: # The reply to send to the client.
1.168 foxr 944: #
1.167 foxr 945: sub EditFile {
946: my $request = shift;
947:
948: # Split the command into it's pieces: edit:filetype:script
949:
1.339 albertel 950: my ($cmd, $filetype, $script) = split(/:/, $request,3); # : in script
1.167 foxr 951:
952: # Check the pre-coditions for success:
953:
1.339 albertel 954: if($cmd != "edit") { # Something is amiss afoot alack.
1.167 foxr 955: return "error:edit request detected, but request != 'edit'\n";
956: }
957: if( ($filetype ne "hosts") &&
958: ($filetype ne "domain")) {
959: return "error:edit requested with invalid file specifier: $filetype \n";
960: }
961:
962: # Split the edit script and check it's validity.
1.168 foxr 963:
964: my @scriptlines = split(/\n/, $script); # one line per element.
965: my $linecount = scalar(@scriptlines);
966: for(my $i = 0; $i < $linecount; $i++) {
967: chomp($scriptlines[$i]);
968: if(!isValidEditCommand($scriptlines[$i])) {
969: return "error:edit with bad script line: '$scriptlines[$i]' \n";
970: }
971: }
1.145 foxr 972:
1.167 foxr 973: # Execute the edit operation.
1.169 foxr 974: # - Create a config file editor for the appropriate file and
975: # - execute each command in the script:
976: #
977: my $configfile = ConfigFileFromSelector($filetype);
978: if (!(defined $configfile)) {
979: return "refused\n";
980: }
981: my $editor = ConfigFileEdit->new($configfile);
1.167 foxr 982:
1.169 foxr 983: for (my $i = 0; $i < $linecount; $i++) {
984: ApplyEdit($scriptlines[$i], $editor);
985: }
986: # If the file is the host file, ensure that our host is
987: # adjusted to have our ip:
988: #
989: if($filetype eq "host") {
990: AdjustOurHost($editor);
991: }
992: # Finally replace the current file with our file.
993: #
994: ReplaceConfigFile($configfile, $editor);
1.167 foxr 995:
996: return "ok\n";
997: }
1.207 foxr 998:
1.255 foxr 999: # read_profile
1000: #
1001: # Returns a set of specific entries from a user's profile file.
1002: # this is a utility function that is used by both get_profile_entry and
1003: # get_profile_entry_encrypted.
1004: #
1005: # Parameters:
1006: # udom - Domain in which the user exists.
1007: # uname - User's account name (loncapa account)
1008: # namespace - The profile namespace to open.
1009: # what - A set of & separated queries.
1010: # Returns:
1011: # If all ok: - The string that needs to be shipped back to the user.
1012: # If failure - A string that starts with error: followed by the failure
1013: # reason.. note that this probabyl gets shipped back to the
1014: # user as well.
1015: #
1016: sub read_profile {
1017: my ($udom, $uname, $namespace, $what) = @_;
1018:
1019: my $hashref = &tie_user_hash($udom, $uname, $namespace,
1020: &GDBM_READER());
1021: if ($hashref) {
1022: my @queries=split(/\&/,$what);
1.440 raeburn 1023: if ($namespace eq 'roles') {
1024: @queries = map { &unescape($_); } @queries;
1025: }
1.255 foxr 1026: my $qresult='';
1027:
1028: for (my $i=0;$i<=$#queries;$i++) {
1029: $qresult.="$hashref->{$queries[$i]}&"; # Presumably failure gives empty string.
1030: }
1031: $qresult=~s/\&$//; # Remove trailing & from last lookup.
1.311 albertel 1032: if (&untie_user_hash($hashref)) {
1.255 foxr 1033: return $qresult;
1034: } else {
1035: return "error: ".($!+0)." untie (GDBM) Failed";
1036: }
1037: } else {
1038: if ($!+0 == 2) {
1039: return "error:No such file or GDBM reported bad block error";
1040: } else {
1041: return "error: ".($!+0)." tie (GDBM) Failed";
1042: }
1043: }
1044:
1045: }
1.214 foxr 1046: #--------------------- Request Handlers --------------------------------------------
1047: #
1.215 foxr 1048: # By convention each request handler registers itself prior to the sub
1049: # declaration:
1.214 foxr 1050: #
1051:
1.216 foxr 1052: #++
1053: #
1.214 foxr 1054: # Handles ping requests.
1055: # Parameters:
1056: # $cmd - the actual keyword that invoked us.
1057: # $tail - the tail of the request that invoked us.
1058: # $replyfd- File descriptor connected to the client
1059: # Implicit Inputs:
1060: # $currenthostid - Global variable that carries the name of the host we are
1061: # known as.
1062: # Returns:
1063: # 1 - Ok to continue processing.
1064: # 0 - Program should exit.
1065: # Side effects:
1066: # Reply information is sent to the client.
1067: sub ping_handler {
1068: my ($cmd, $tail, $client) = @_;
1069: Debug("$cmd $tail $client .. $currenthostid:");
1070:
1.387 albertel 1071: Reply( $client,\$currenthostid,"$cmd:$tail");
1.214 foxr 1072:
1073: return 1;
1074: }
1075: ®ister_handler("ping", \&ping_handler, 0, 1, 1); # Ping unencoded, client or manager.
1076:
1.216 foxr 1077: #++
1.215 foxr 1078: #
1079: # Handles pong requests. Pong replies with our current host id, and
1080: # the results of a ping sent to us via our lonc.
1081: #
1082: # Parameters:
1083: # $cmd - the actual keyword that invoked us.
1084: # $tail - the tail of the request that invoked us.
1085: # $replyfd- File descriptor connected to the client
1086: # Implicit Inputs:
1087: # $currenthostid - Global variable that carries the name of the host we are
1088: # connected to.
1089: # Returns:
1090: # 1 - Ok to continue processing.
1091: # 0 - Program should exit.
1092: # Side effects:
1093: # Reply information is sent to the client.
1094: sub pong_handler {
1095: my ($cmd, $tail, $replyfd) = @_;
1096:
1.365 albertel 1097: my $reply=&Apache::lonnet::reply("ping",$clientname);
1.215 foxr 1098: &Reply( $replyfd, "$currenthostid:$reply\n", "$cmd:$tail");
1099: return 1;
1100: }
1101: ®ister_handler("pong", \&pong_handler, 0, 1, 1); # Pong unencoded, client or manager
1102:
1.216 foxr 1103: #++
1104: # Called to establish an encrypted session key with the remote client.
1105: # Note that with secure lond, in most cases this function is never
1106: # invoked. Instead, the secure session key is established either
1107: # via a local file that's locked down tight and only lives for a short
1108: # time, or via an ssl tunnel...and is generated from a bunch-o-random
1109: # bits from /dev/urandom, rather than the predictable pattern used by
1110: # by this sub. This sub is only used in the old-style insecure
1111: # key negotiation.
1112: # Parameters:
1113: # $cmd - the actual keyword that invoked us.
1114: # $tail - the tail of the request that invoked us.
1115: # $replyfd- File descriptor connected to the client
1116: # Implicit Inputs:
1117: # $currenthostid - Global variable that carries the name of the host
1118: # known as.
1.448 raeburn 1119: # $clientname - Global variable that carries the name of the host we're connected to.
1.216 foxr 1120: # Returns:
1121: # 1 - Ok to continue processing.
1122: # 0 - Program should exit.
1123: # Implicit Outputs:
1124: # Reply information is sent to the client.
1125: # $cipher is set with a reference to a new IDEA encryption object.
1126: #
1127: sub establish_key_handler {
1128: my ($cmd, $tail, $replyfd) = @_;
1129:
1130: my $buildkey=time.$$.int(rand 100000);
1131: $buildkey=~tr/1-6/A-F/;
1132: $buildkey=int(rand 100000).$buildkey.int(rand 100000);
1133: my $key=$currenthostid.$clientname;
1134: $key=~tr/a-z/A-Z/;
1135: $key=~tr/G-P/0-9/;
1136: $key=~tr/Q-Z/0-9/;
1137: $key=$key.$buildkey.$key.$buildkey.$key.$buildkey;
1138: $key=substr($key,0,32);
1139: my $cipherkey=pack("H32",$key);
1140: $cipher=new IDEA $cipherkey;
1.387 albertel 1141: &Reply($replyfd, \$buildkey, "$cmd:$tail");
1.216 foxr 1142:
1143: return 1;
1144:
1145: }
1146: ®ister_handler("ekey", \&establish_key_handler, 0, 1,1);
1147:
1.217 foxr 1148: # Handler for the load command. Returns the current system load average
1149: # to the requestor.
1150: #
1151: # Parameters:
1152: # $cmd - the actual keyword that invoked us.
1153: # $tail - the tail of the request that invoked us.
1154: # $replyfd- File descriptor connected to the client
1155: # Implicit Inputs:
1156: # $currenthostid - Global variable that carries the name of the host
1157: # known as.
1.448 raeburn 1158: # $clientname - Global variable that carries the name of the host we're connected to.
1.217 foxr 1159: # Returns:
1160: # 1 - Ok to continue processing.
1161: # 0 - Program should exit.
1162: # Side effects:
1163: # Reply information is sent to the client.
1164: sub load_handler {
1165: my ($cmd, $tail, $replyfd) = @_;
1166:
1.463 foxr 1167:
1168:
1.217 foxr 1169: # Get the load average from /proc/loadavg and calculate it as a percentage of
1170: # the allowed load limit as set by the perl global variable lonLoadLim
1171:
1172: my $loadavg;
1173: my $loadfile=IO::File->new('/proc/loadavg');
1174:
1175: $loadavg=<$loadfile>;
1176: $loadavg =~ s/\s.*//g; # Extract the first field only.
1177:
1178: my $loadpercent=100*$loadavg/$perlvar{'lonLoadLim'};
1179:
1.387 albertel 1180: &Reply( $replyfd, \$loadpercent, "$cmd:$tail");
1.217 foxr 1181:
1182: return 1;
1183: }
1.263 albertel 1184: ®ister_handler("load", \&load_handler, 0, 1, 0);
1.217 foxr 1185:
1186: #
1187: # Process the userload request. This sub returns to the client the current
1188: # user load average. It can be invoked either by clients or managers.
1189: #
1190: # Parameters:
1191: # $cmd - the actual keyword that invoked us.
1192: # $tail - the tail of the request that invoked us.
1193: # $replyfd- File descriptor connected to the client
1194: # Implicit Inputs:
1195: # $currenthostid - Global variable that carries the name of the host
1196: # known as.
1.448 raeburn 1197: # $clientname - Global variable that carries the name of the host we're connected to.
1.217 foxr 1198: # Returns:
1199: # 1 - Ok to continue processing.
1200: # 0 - Program should exit
1201: # Implicit inputs:
1202: # whatever the userload() function requires.
1203: # Implicit outputs:
1204: # the reply is written to the client.
1205: #
1206: sub user_load_handler {
1207: my ($cmd, $tail, $replyfd) = @_;
1208:
1.365 albertel 1209: my $userloadpercent=&Apache::lonnet::userload();
1.387 albertel 1210: &Reply($replyfd, \$userloadpercent, "$cmd:$tail");
1.217 foxr 1211:
1212: return 1;
1213: }
1.263 albertel 1214: ®ister_handler("userload", \&user_load_handler, 0, 1, 0);
1.217 foxr 1215:
1.218 foxr 1216: # Process a request for the authorization type of a user:
1217: # (userauth).
1218: #
1219: # Parameters:
1220: # $cmd - the actual keyword that invoked us.
1221: # $tail - the tail of the request that invoked us.
1222: # $replyfd- File descriptor connected to the client
1223: # Returns:
1224: # 1 - Ok to continue processing.
1225: # 0 - Program should exit
1226: # Implicit outputs:
1227: # The user authorization type is written to the client.
1228: #
1229: sub user_authorization_type {
1230: my ($cmd, $tail, $replyfd) = @_;
1231:
1232: my $userinput = "$cmd:$tail";
1233:
1234: # Pull the domain and username out of the command tail.
1.222 foxr 1235: # and call get_auth_type to determine the authentication type.
1.218 foxr 1236:
1237: my ($udom,$uname)=split(/:/,$tail);
1.222 foxr 1238: my $result = &get_auth_type($udom, $uname);
1.218 foxr 1239: if($result eq "nouser") {
1240: &Failure( $replyfd, "unknown_user\n", $userinput);
1241: } else {
1242: #
1.222 foxr 1243: # We only want to pass the second field from get_auth_type
1.218 foxr 1244: # for ^krb.. otherwise we'll be handing out the encrypted
1245: # password for internals e.g.
1246: #
1247: my ($type,$otherinfo) = split(/:/,$result);
1248: if($type =~ /^krb/) {
1249: $type = $result;
1.269 raeburn 1250: } else {
1251: $type .= ':';
1252: }
1.387 albertel 1253: &Reply( $replyfd, \$type, $userinput);
1.218 foxr 1254: }
1255:
1256: return 1;
1257: }
1258: ®ister_handler("currentauth", \&user_authorization_type, 1, 1, 0);
1259:
1260: # Process a request by a manager to push a hosts or domain table
1261: # to us. We pick apart the command and pass it on to the subs
1262: # that already exist to do this.
1263: #
1264: # Parameters:
1265: # $cmd - the actual keyword that invoked us.
1266: # $tail - the tail of the request that invoked us.
1267: # $client - File descriptor connected to the client
1268: # Returns:
1269: # 1 - Ok to continue processing.
1270: # 0 - Program should exit
1271: # Implicit Output:
1272: # a reply is written to the client.
1273: sub push_file_handler {
1274: my ($cmd, $tail, $client) = @_;
1.412 foxr 1275: &Debug("In push file handler");
1.218 foxr 1276: my $userinput = "$cmd:$tail";
1277:
1278: # At this time we only know that the IP of our partner is a valid manager
1279: # the code below is a hook to do further authentication (e.g. to resolve
1280: # spoofing).
1281:
1282: my $cert = &GetCertificate($userinput);
1.412 foxr 1283: if(&ValidManager($cert)) {
1284: &Debug("Valid manager: $client");
1.218 foxr 1285:
1286: # Now presumably we have the bona fides of both the peer host and the
1287: # process making the request.
1288:
1289: my $reply = &PushFile($userinput);
1.387 albertel 1290: &Reply($client, \$reply, $userinput);
1.218 foxr 1291:
1292: } else {
1.412 foxr 1293: &logthis("push_file_handler $client is not valid");
1.218 foxr 1294: &Failure( $client, "refused\n", $userinput);
1295: }
1.219 foxr 1296: return 1;
1.218 foxr 1297: }
1298: ®ister_handler("pushfile", \&push_file_handler, 1, 0, 1);
1299:
1.399 raeburn 1300: # The du_handler routine should be considered obsolete and is retained
1301: # for communication with legacy servers. Please see the du2_handler.
1.243 banghart 1302: #
1.399 raeburn 1303: # du - list the disk usage of a directory recursively.
1.243 banghart 1304: #
1305: # note: stolen code from the ls file handler
1306: # under construction by Rick Banghart
1307: # .
1308: # Parameters:
1309: # $cmd - The command that dispatched us (du).
1310: # $ududir - The directory path to list... I'm not sure what this
1311: # is relative as things like ls:. return e.g.
1312: # no_such_dir.
1313: # $client - Socket open on the client.
1314: # Returns:
1315: # 1 - indicating that the daemon should not disconnect.
1316: # Side Effects:
1317: # The reply is written to $client.
1318: #
1319: sub du_handler {
1320: my ($cmd, $ududir, $client) = @_;
1.339 albertel 1321: ($ududir) = split(/:/,$ududir); # Make 'telnet' testing easier.
1.251 foxr 1322: my $userinput = "$cmd:$ududir";
1323:
1.245 albertel 1324: if ($ududir=~/\.\./ || $ududir!~m|^/home/httpd/|) {
1325: &Failure($client,"refused\n","$cmd:$ududir");
1326: return 1;
1327: }
1.249 foxr 1328: # Since $ududir could have some nasties in it,
1329: # we will require that ududir is a valid
1330: # directory. Just in case someone tries to
1331: # slip us a line like .;(cd /home/httpd rm -rf*)
1332: # etc.
1333: #
1334: if (-d $ududir) {
1.292 albertel 1335: my $total_size=0;
1336: my $code=sub {
1337: if ($_=~/\.\d+\./) { return;}
1338: if ($_=~/\.meta$/) { return;}
1.362 albertel 1339: if (-d $_) { return;}
1.292 albertel 1340: $total_size+=(stat($_))[7];
1341: };
1.295 raeburn 1342: chdir($ududir);
1.292 albertel 1343: find($code,$ududir);
1344: $total_size=int($total_size/1024);
1.387 albertel 1345: &Reply($client,\$total_size,"$cmd:$ududir");
1.249 foxr 1346: } else {
1.251 foxr 1347: &Failure($client, "bad_directory:$ududir\n","$cmd:$ududir");
1.249 foxr 1348: }
1.243 banghart 1349: return 1;
1350: }
1351: ®ister_handler("du", \&du_handler, 0, 1, 0);
1.218 foxr 1352:
1.399 raeburn 1353: # Please also see the du_handler, which is obsoleted by du2.
1354: # du2_handler differs from du_handler in that required path to directory
1355: # provided by &propath() is prepended in the handler instead of on the
1356: # client side.
1.239 foxr 1357: #
1.399 raeburn 1358: # du2 - list the disk usage of a directory recursively.
1359: #
1360: # Parameters:
1361: # $cmd - The command that dispatched us (du).
1362: # $tail - The tail of the request that invoked us.
1363: # $tail is a : separated list of the following:
1364: # - $ududir - directory path to list (before prepending)
1365: # - $getpropath = 1 if &propath() should prepend
1366: # - $uname - username to use for &propath or user dir
1367: # - $udom - domain to use for &propath or user dir
1368: # All are escaped.
1369: # $client - Socket open on the client.
1370: # Returns:
1371: # 1 - indicating that the daemon should not disconnect.
1372: # Side Effects:
1373: # The reply is written to $client.
1374: #
1375:
1376: sub du2_handler {
1377: my ($cmd, $tail, $client) = @_;
1378: my ($ududir,$getpropath,$uname,$udom) = map { &unescape($_) } (split(/:/, $tail));
1379: my $userinput = "$cmd:$tail";
1380: if (($ududir=~/\.\./) || (($ududir!~m|^/home/httpd/|) && (!$getpropath))) {
1381: &Failure($client,"refused\n","$cmd:$tail");
1382: return 1;
1383: }
1384: if ($getpropath) {
1385: if (($uname =~ /^$LONCAPA::match_name$/) && ($udom =~ /^$LONCAPA::match_domain$/)) {
1386: $ududir = &propath($udom,$uname).'/'.$ududir;
1387: } else {
1388: &Failure($client,"refused\n","$cmd:$tail");
1389: return 1;
1390: }
1391: }
1392: # Since $ududir could have some nasties in it,
1393: # we will require that ududir is a valid
1394: # directory. Just in case someone tries to
1395: # slip us a line like .;(cd /home/httpd rm -rf*)
1396: # etc.
1397: #
1398: if (-d $ududir) {
1399: my $total_size=0;
1400: my $code=sub {
1401: if ($_=~/\.\d+\./) { return;}
1402: if ($_=~/\.meta$/) { return;}
1403: if (-d $_) { return;}
1404: $total_size+=(stat($_))[7];
1405: };
1406: chdir($ududir);
1407: find($code,$ududir);
1408: $total_size=int($total_size/1024);
1409: &Reply($client,\$total_size,"$cmd:$ududir");
1410: } else {
1411: &Failure($client, "bad_directory:$ududir\n","$cmd:$tail");
1412: }
1413: return 1;
1414: }
1415: ®ister_handler("du2", \&du2_handler, 0, 1, 0);
1416:
1417: #
1418: # The ls_handler routine should be considered obsolete and is retained
1419: # for communication with legacy servers. Please see the ls3_handler.
1.280 matthew 1420: #
1.239 foxr 1421: # ls - list the contents of a directory. For each file in the
1422: # selected directory the filename followed by the full output of
1423: # the stat function is returned. The returned info for each
1424: # file are separated by ':'. The stat fields are separated by &'s.
1425: # Parameters:
1426: # $cmd - The command that dispatched us (ls).
1427: # $ulsdir - The directory path to list... I'm not sure what this
1428: # is relative as things like ls:. return e.g.
1429: # no_such_dir.
1430: # $client - Socket open on the client.
1431: # Returns:
1432: # 1 - indicating that the daemon should not disconnect.
1433: # Side Effects:
1434: # The reply is written to $client.
1435: #
1436: sub ls_handler {
1.280 matthew 1437: # obsoleted by ls2_handler
1.239 foxr 1438: my ($cmd, $ulsdir, $client) = @_;
1439:
1440: my $userinput = "$cmd:$ulsdir";
1441:
1442: my $obs;
1443: my $rights;
1444: my $ulsout='';
1445: my $ulsfn;
1446: if (-e $ulsdir) {
1447: if(-d $ulsdir) {
1448: if (opendir(LSDIR,$ulsdir)) {
1449: while ($ulsfn=readdir(LSDIR)) {
1.291 albertel 1450: undef($obs);
1451: undef($rights);
1.239 foxr 1452: my @ulsstats=stat($ulsdir.'/'.$ulsfn);
1453: #We do some obsolete checking here
1454: if(-e $ulsdir.'/'.$ulsfn.".meta") {
1455: open(FILE, $ulsdir.'/'.$ulsfn.".meta");
1456: my @obsolete=<FILE>;
1457: foreach my $obsolete (@obsolete) {
1.301 www 1458: if($obsolete =~ m/(<obsolete>)(on|1)/) { $obs = 1; }
1.239 foxr 1459: if($obsolete =~ m|(<copyright>)(default)|) { $rights = 1; }
1460: }
1461: }
1462: $ulsout.=$ulsfn.'&'.join('&',@ulsstats);
1463: if($obs eq '1') { $ulsout.="&1"; }
1464: else { $ulsout.="&0"; }
1465: if($rights eq '1') { $ulsout.="&1:"; }
1466: else { $ulsout.="&0:"; }
1467: }
1468: closedir(LSDIR);
1469: }
1470: } else {
1471: my @ulsstats=stat($ulsdir);
1472: $ulsout.=$ulsfn.'&'.join('&',@ulsstats).':';
1473: }
1474: } else {
1475: $ulsout='no_such_dir';
1476: }
1477: if ($ulsout eq '') { $ulsout='empty'; }
1.387 albertel 1478: &Reply($client, \$ulsout, $userinput); # This supports debug logging.
1.239 foxr 1479:
1480: return 1;
1481:
1482: }
1483: ®ister_handler("ls", \&ls_handler, 0, 1, 0);
1484:
1.399 raeburn 1485: # The ls2_handler routine should be considered obsolete and is retained
1486: # for communication with legacy servers. Please see the ls3_handler.
1487: # Please also see the ls_handler, which was itself obsoleted by ls2.
1.280 matthew 1488: # ls2_handler differs from ls_handler in that it escapes its return
1489: # values before concatenating them together with ':'s.
1490: #
1491: # ls2 - list the contents of a directory. For each file in the
1492: # selected directory the filename followed by the full output of
1493: # the stat function is returned. The returned info for each
1494: # file are separated by ':'. The stat fields are separated by &'s.
1495: # Parameters:
1496: # $cmd - The command that dispatched us (ls).
1497: # $ulsdir - The directory path to list... I'm not sure what this
1498: # is relative as things like ls:. return e.g.
1499: # no_such_dir.
1500: # $client - Socket open on the client.
1501: # Returns:
1502: # 1 - indicating that the daemon should not disconnect.
1503: # Side Effects:
1504: # The reply is written to $client.
1505: #
1506: sub ls2_handler {
1507: my ($cmd, $ulsdir, $client) = @_;
1508:
1509: my $userinput = "$cmd:$ulsdir";
1510:
1511: my $obs;
1512: my $rights;
1513: my $ulsout='';
1514: my $ulsfn;
1515: if (-e $ulsdir) {
1516: if(-d $ulsdir) {
1517: if (opendir(LSDIR,$ulsdir)) {
1518: while ($ulsfn=readdir(LSDIR)) {
1.291 albertel 1519: undef($obs);
1520: undef($rights);
1.280 matthew 1521: my @ulsstats=stat($ulsdir.'/'.$ulsfn);
1522: #We do some obsolete checking here
1523: if(-e $ulsdir.'/'.$ulsfn.".meta") {
1524: open(FILE, $ulsdir.'/'.$ulsfn.".meta");
1525: my @obsolete=<FILE>;
1526: foreach my $obsolete (@obsolete) {
1.301 www 1527: if($obsolete =~ m/(<obsolete>)(on|1)/) { $obs = 1; }
1.280 matthew 1528: if($obsolete =~ m|(<copyright>)(default)|) {
1529: $rights = 1;
1530: }
1531: }
1532: }
1533: my $tmp = $ulsfn.'&'.join('&',@ulsstats);
1534: if ($obs eq '1') { $tmp.="&1"; } else { $tmp.="&0"; }
1535: if ($rights eq '1') { $tmp.="&1"; } else { $tmp.="&0"; }
1536: $ulsout.= &escape($tmp).':';
1537: }
1538: closedir(LSDIR);
1539: }
1540: } else {
1541: my @ulsstats=stat($ulsdir);
1542: $ulsout.=$ulsfn.'&'.join('&',@ulsstats).':';
1543: }
1544: } else {
1545: $ulsout='no_such_dir';
1546: }
1547: if ($ulsout eq '') { $ulsout='empty'; }
1.387 albertel 1548: &Reply($client, \$ulsout, $userinput); # This supports debug logging.
1.280 matthew 1549: return 1;
1550: }
1551: ®ister_handler("ls2", \&ls2_handler, 0, 1, 0);
1.399 raeburn 1552: #
1553: # ls3 - list the contents of a directory. For each file in the
1554: # selected directory the filename followed by the full output of
1555: # the stat function is returned. The returned info for each
1556: # file are separated by ':'. The stat fields are separated by &'s.
1557: # Parameters:
1558: # $cmd - The command that dispatched us (ls).
1559: # $tail - The tail of the request that invoked us.
1560: # $tail is a : separated list of the following:
1561: # - $ulsdir - directory path to list (before prepending)
1562: # - $getpropath = 1 if &propath() should prepend
1563: # - $getuserdir = 1 if path to user dir in lonUsers should
1564: # prepend
1565: # - $alternate_root - path to prepend
1566: # - $uname - username to use for &propath or user dir
1567: # - $udom - domain to use for &propath or user dir
1568: # All of these except $getpropath and &getuserdir are escaped.
1569: # no_such_dir.
1570: # $client - Socket open on the client.
1571: # Returns:
1572: # 1 - indicating that the daemon should not disconnect.
1573: # Side Effects:
1574: # The reply is written to $client.
1575: #
1576:
1577: sub ls3_handler {
1578: my ($cmd, $tail, $client) = @_;
1579: my $userinput = "$cmd:$tail";
1580: my ($ulsdir,$getpropath,$getuserdir,$alternate_root,$uname,$udom) =
1581: split(/:/,$tail);
1582: if (defined($ulsdir)) {
1583: $ulsdir = &unescape($ulsdir);
1584: }
1585: if (defined($alternate_root)) {
1586: $alternate_root = &unescape($alternate_root);
1587: }
1588: if (defined($uname)) {
1589: $uname = &unescape($uname);
1590: }
1591: if (defined($udom)) {
1592: $udom = &unescape($udom);
1593: }
1594:
1595: my $dir_root = $perlvar{'lonDocRoot'};
1596: if ($getpropath) {
1597: if (($uname =~ /^$LONCAPA::match_name$/) && ($udom =~ /^$LONCAPA::match_domain$/)) {
1598: $dir_root = &propath($udom,$uname);
1599: $dir_root =~ s/\/$//;
1600: } else {
1601: &Failure($client,"refused\n","$cmd:$tail");
1602: return 1;
1603: }
1604: } elsif ($getuserdir) {
1605: if (($uname =~ /^$LONCAPA::match_name$/) && ($udom =~ /^$LONCAPA::match_domain$/)) {
1606: my $subdir=$uname.'__';
1607: $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;
1608: $dir_root = $Apache::lonnet::perlvar{'lonUsersDir'}
1609: ."/$udom/$subdir/$uname";
1610: } else {
1611: &Failure($client,"refused\n","$cmd:$tail");
1612: return 1;
1613: }
1.400 raeburn 1614: } elsif ($alternate_root ne '') {
1.399 raeburn 1615: $dir_root = $alternate_root;
1616: }
1.408 raeburn 1617: if (($dir_root ne '') && ($dir_root ne '/')) {
1.400 raeburn 1618: if ($ulsdir =~ /^\//) {
1619: $ulsdir = $dir_root.$ulsdir;
1620: } else {
1621: $ulsdir = $dir_root.'/'.$ulsdir;
1622: }
1.399 raeburn 1623: }
1624: my $obs;
1625: my $rights;
1626: my $ulsout='';
1627: my $ulsfn;
1628: if (-e $ulsdir) {
1629: if(-d $ulsdir) {
1630: if (opendir(LSDIR,$ulsdir)) {
1631: while ($ulsfn=readdir(LSDIR)) {
1632: undef($obs);
1633: undef($rights);
1634: my @ulsstats=stat($ulsdir.'/'.$ulsfn);
1635: #We do some obsolete checking here
1636: if(-e $ulsdir.'/'.$ulsfn.".meta") {
1637: open(FILE, $ulsdir.'/'.$ulsfn.".meta");
1638: my @obsolete=<FILE>;
1639: foreach my $obsolete (@obsolete) {
1640: if($obsolete =~ m/(<obsolete>)(on|1)/) { $obs = 1; }
1641: if($obsolete =~ m|(<copyright>)(default)|) {
1642: $rights = 1;
1643: }
1644: }
1645: }
1646: my $tmp = $ulsfn.'&'.join('&',@ulsstats);
1647: if ($obs eq '1') { $tmp.="&1"; } else { $tmp.="&0"; }
1648: if ($rights eq '1') { $tmp.="&1"; } else { $tmp.="&0"; }
1649: $ulsout.= &escape($tmp).':';
1650: }
1651: closedir(LSDIR);
1652: }
1653: } else {
1654: my @ulsstats=stat($ulsdir);
1655: $ulsout.=$ulsfn.'&'.join('&',@ulsstats).':';
1656: }
1657: } else {
1658: $ulsout='no_such_dir';
1.400 raeburn 1659: }
1660: if ($ulsout eq '') { $ulsout='empty'; }
1661: &Reply($client, \$ulsout, $userinput); # This supports debug logging.
1662: return 1;
1.399 raeburn 1663: }
1664: ®ister_handler("ls3", \&ls3_handler, 0, 1, 0);
1.280 matthew 1665:
1.477 raeburn 1666: sub read_lonnet_global {
1667: my ($cmd,$tail,$client) = @_;
1668: my $userinput = "$cmd:$tail";
1669: my $requested = &Apache::lonnet::thaw_unescape($tail);
1670: my $result;
1.480 raeburn 1671: my %packagevars = (
1672: spareid => \%Apache::lonnet::spareid,
1673: perlvar => \%Apache::lonnet::perlvar,
1674: );
1675: my %limit_to = (
1676: perlvar => {
1677: lonOtherAuthen => 1,
1678: lonBalancer => 1,
1679: lonVersion => 1,
1680: lonSysEMail => 1,
1681: lonHostID => 1,
1682: lonRole => 1,
1683: lonDefDomain => 1,
1684: lonLoadLim => 1,
1685: lonUserLoadLim => 1,
1686: }
1687: );
1.477 raeburn 1688: if (ref($requested) eq 'HASH') {
1689: foreach my $what (keys(%{$requested})) {
1690: my $response;
1.480 raeburn 1691: my $items = {};
1692: if (exists($packagevars{$what})) {
1693: if (ref($limit_to{$what}) eq 'HASH') {
1694: foreach my $varname (keys(%{$packagevars{$what}})) {
1695: if ($limit_to{$what}{$varname}) {
1696: $items->{$varname} = $packagevars{$what}{$varname};
1697: }
1698: }
1699: } else {
1700: $items = $packagevars{$what};
1.477 raeburn 1701: }
1.480 raeburn 1702: if ($what eq 'perlvar') {
1703: if (!exists($packagevars{$what}{'lonBalancer'})) {
1704: if ($dist =~ /^(centos|rhes|fedora|scientific)/) {
1705: my $othervarref=LONCAPA::Configuration::read_conf('httpd.conf');
1706: if (ref($othervarref) eq 'HASH') {
1707: $items->{'lonBalancer'} = $othervarref->{'lonBalancer'};
1708: }
1709: }
1710: }
1.477 raeburn 1711: }
1.480 raeburn 1712: $response = &Apache::lonnet::freeze_escape($items);
1.477 raeburn 1713: }
1.478 raeburn 1714: $result .= &escape($what).'='.$response.'&';
1.477 raeburn 1715: }
1716: }
1717: $result =~ s/\&$//;
1718: &Reply($client,\$result,$userinput);
1719: return 1;
1720: }
1721: ®ister_handler("readlonnetglobal", \&read_lonnet_global, 0, 1, 0);
1722:
1.479 raeburn 1723: sub server_devalidatecache_handler {
1724: my ($cmd,$tail,$client) = @_;
1725: my $userinput = "$cmd:$tail";
1.503 raeburn 1726: my $items = &unescape($tail);
1727: my @cached = split(/\&/,$items);
1728: foreach my $key (@cached) {
1729: if ($key =~ /:/) {
1730: my ($name,$id) = map { &unescape($_); } split(/:/,$key);
1731: &Apache::lonnet::devalidate_cache_new($name,$id);
1732: }
1733: }
1.479 raeburn 1734: my $result = 'ok';
1735: &Reply($client,\$result,$userinput);
1736: return 1;
1737: }
1.481 raeburn 1738: ®ister_handler("devalidatecache", \&server_devalidatecache_handler, 0, 1, 0);
1.479 raeburn 1739:
1.410 raeburn 1740: sub server_timezone_handler {
1741: my ($cmd,$tail,$client) = @_;
1742: my $userinput = "$cmd:$tail";
1743: my $timezone;
1744: my $clockfile = '/etc/sysconfig/clock'; # Fedora/CentOS/SuSE
1745: my $tzfile = '/etc/timezone'; # Debian/Ubuntu
1746: if (-e $clockfile) {
1747: if (open(my $fh,"<$clockfile")) {
1748: while (<$fh>) {
1749: next if (/^[\#\s]/);
1750: if (/^(?:TIME)?ZONE\s*=\s*['"]?\s*([\w\/]+)/) {
1751: $timezone = $1;
1752: last;
1753: }
1754: }
1755: close($fh);
1756: }
1757: } elsif (-e $tzfile) {
1758: if (open(my $fh,"<$tzfile")) {
1759: $timezone = <$fh>;
1760: close($fh);
1761: chomp($timezone);
1762: if ($timezone =~ m{^Etc/(\w+)$}) {
1763: $timezone = $1;
1764: }
1765: }
1766: }
1767: &Reply($client,\$timezone,$userinput); # This supports debug logging.
1768: return 1;
1769: }
1770: ®ister_handler("servertimezone", \&server_timezone_handler, 0, 1, 0);
1771:
1.413 raeburn 1772: sub server_loncaparev_handler {
1773: my ($cmd,$tail,$client) = @_;
1774: my $userinput = "$cmd:$tail";
1775: &Reply($client,\$perlvar{'lonVersion'},$userinput);
1776: return 1;
1777: }
1778: ®ister_handler("serverloncaparev", \&server_loncaparev_handler, 0, 1, 0);
1779:
1.448 raeburn 1780: sub server_homeID_handler {
1781: my ($cmd,$tail,$client) = @_;
1782: my $userinput = "$cmd:$tail";
1783: &Reply($client,\$perlvar{'lonHostID'},$userinput);
1784: return 1;
1785: }
1786: ®ister_handler("serverhomeID", \&server_homeID_handler, 0, 1, 0);
1787:
1.471 raeburn 1788: sub server_distarch_handler {
1789: my ($cmd,$tail,$client) = @_;
1790: my $userinput = "$cmd:$tail";
1791: my $reply = &distro_and_arch();
1792: &Reply($client,\$reply,$userinput);
1793: return 1;
1794: }
1795: ®ister_handler("serverdistarch", \&server_distarch_handler, 0, 1, 0);
1796:
1.218 foxr 1797: # Process a reinit request. Reinit requests that either
1798: # lonc or lond be reinitialized so that an updated
1799: # host.tab or domain.tab can be processed.
1800: #
1801: # Parameters:
1802: # $cmd - the actual keyword that invoked us.
1803: # $tail - the tail of the request that invoked us.
1804: # $client - File descriptor connected to the client
1805: # Returns:
1806: # 1 - Ok to continue processing.
1807: # 0 - Program should exit
1808: # Implicit output:
1809: # a reply is sent to the client.
1810: #
1811: sub reinit_process_handler {
1812: my ($cmd, $tail, $client) = @_;
1813:
1814: my $userinput = "$cmd:$tail";
1815:
1816: my $cert = &GetCertificate($userinput);
1817: if(&ValidManager($cert)) {
1818: chomp($userinput);
1819: my $reply = &ReinitProcess($userinput);
1.387 albertel 1820: &Reply( $client, \$reply, $userinput);
1.218 foxr 1821: } else {
1822: &Failure( $client, "refused\n", $userinput);
1823: }
1824: return 1;
1825: }
1826: ®ister_handler("reinit", \&reinit_process_handler, 1, 0, 1);
1827:
1828: # Process the editing script for a table edit operation.
1829: # the editing operation must be encrypted and requested by
1830: # a manager host.
1831: #
1832: # Parameters:
1833: # $cmd - the actual keyword that invoked us.
1834: # $tail - the tail of the request that invoked us.
1835: # $client - File descriptor connected to the client
1836: # Returns:
1837: # 1 - Ok to continue processing.
1838: # 0 - Program should exit
1839: # Implicit output:
1840: # a reply is sent to the client.
1841: #
1842: sub edit_table_handler {
1843: my ($command, $tail, $client) = @_;
1844:
1845: my $userinput = "$command:$tail";
1846:
1847: my $cert = &GetCertificate($userinput);
1848: if(&ValidManager($cert)) {
1849: my($filetype, $script) = split(/:/, $tail);
1850: if (($filetype eq "hosts") ||
1851: ($filetype eq "domain")) {
1852: if($script ne "") {
1853: &Reply($client, # BUGBUG - EditFile
1854: &EditFile($userinput), # could fail.
1855: $userinput);
1856: } else {
1857: &Failure($client,"refused\n",$userinput);
1858: }
1859: } else {
1860: &Failure($client,"refused\n",$userinput);
1861: }
1862: } else {
1863: &Failure($client,"refused\n",$userinput);
1864: }
1865: return 1;
1866: }
1.263 albertel 1867: ®ister_handler("edit", \&edit_table_handler, 1, 0, 1);
1.218 foxr 1868:
1.220 foxr 1869: #
1870: # Authenticate a user against the LonCAPA authentication
1871: # database. Note that there are several authentication
1872: # possibilities:
1873: # - unix - The user can be authenticated against the unix
1874: # password file.
1875: # - internal - The user can be authenticated against a purely
1876: # internal per user password file.
1877: # - kerberos - The user can be authenticated against either a kerb4 or kerb5
1878: # ticket granting authority.
1879: # - user - The person tailoring LonCAPA can supply a user authentication
1880: # mechanism that is per system.
1881: #
1882: # Parameters:
1883: # $cmd - The command that got us here.
1884: # $tail - Tail of the command (remaining parameters).
1885: # $client - File descriptor connected to client.
1886: # Returns
1887: # 0 - Requested to exit, caller should shut down.
1888: # 1 - Continue processing.
1889: # Implicit inputs:
1890: # The authentication systems describe above have their own forms of implicit
1891: # input into the authentication process that are described above.
1892: #
1893: sub authenticate_handler {
1894: my ($cmd, $tail, $client) = @_;
1895:
1896:
1897: # Regenerate the full input line
1898:
1899: my $userinput = $cmd.":".$tail;
1900:
1901: # udom - User's domain.
1902: # uname - Username.
1903: # upass - User's password.
1.396 raeburn 1904: # checkdefauth - Pass to validate_user() to try authentication
1905: # with default auth type(s) if no user account.
1.447 raeburn 1906: # clientcancheckhost - Passed by clients with functionality in lonauth.pm
1907: # to check if session can be hosted.
1.220 foxr 1908:
1.447 raeburn 1909: my ($udom, $uname, $upass, $checkdefauth, $clientcancheckhost)=split(/:/,$tail);
1.399 raeburn 1910: &Debug(" Authenticate domain = $udom, user = $uname, password = $upass, checkdefauth = $checkdefauth");
1.220 foxr 1911: chomp($upass);
1912: $upass=&unescape($upass);
1913:
1.396 raeburn 1914: my $pwdcorrect = &validate_user($udom,$uname,$upass,$checkdefauth);
1.220 foxr 1915: if($pwdcorrect) {
1.447 raeburn 1916: my $canhost = 1;
1917: unless ($clientcancheckhost) {
1.448 raeburn 1918: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
1919: my $uint_dom = &Apache::lonnet::internet_dom($uprimary_id);
1.452 raeburn 1920: my @intdoms;
1921: my $internet_names = &Apache::lonnet::get_internet_names($clientname);
1922: if (ref($internet_names) eq 'ARRAY') {
1923: @intdoms = @{$internet_names};
1924: }
1.448 raeburn 1925: unless ($uint_dom ne '' && grep(/^\Q$uint_dom\E$/,@intdoms)) {
1.447 raeburn 1926: my ($remote,$hosted);
1927: my $remotesession = &get_usersession_config($udom,'remotesession');
1928: if (ref($remotesession) eq 'HASH') {
1929: $remote = $remotesession->{'remote'}
1930: }
1.448 raeburn 1931: my $hostedsession = &get_usersession_config($clienthomedom,'hostedsession');
1.447 raeburn 1932: if (ref($hostedsession) eq 'HASH') {
1933: $hosted = $hostedsession->{'hosted'};
1934: }
1.448 raeburn 1935: $canhost = &Apache::lonnet::can_host_session($udom,$clientname,
1.492 droeschl 1936: $clientversion,
1.447 raeburn 1937: $remote,$hosted);
1938: }
1939: }
1940: if ($canhost) {
1941: &Reply( $client, "authorized\n", $userinput);
1942: } else {
1943: &Reply( $client, "not_allowed_to_host\n", $userinput);
1944: }
1.220 foxr 1945: #
1946: # Bad credentials: Failed to authorize
1947: #
1948: } else {
1949: &Failure( $client, "non_authorized\n", $userinput);
1950: }
1951:
1952: return 1;
1953: }
1.263 albertel 1954: ®ister_handler("auth", \&authenticate_handler, 1, 1, 0);
1.214 foxr 1955:
1.222 foxr 1956: #
1957: # Change a user's password. Note that this function is complicated by
1958: # the fact that a user may be authenticated in more than one way:
1959: # At present, we are not able to change the password for all types of
1960: # authentication methods. Only for:
1961: # unix - unix password or shadow passoword style authentication.
1962: # local - Locally written authentication mechanism.
1963: # For now, kerb4 and kerb5 password changes are not supported and result
1964: # in an error.
1965: # FUTURE WORK:
1966: # Support kerberos passwd changes?
1967: # Parameters:
1968: # $cmd - The command that got us here.
1969: # $tail - Tail of the command (remaining parameters).
1970: # $client - File descriptor connected to client.
1971: # Returns
1972: # 0 - Requested to exit, caller should shut down.
1973: # 1 - Continue processing.
1974: # Implicit inputs:
1975: # The authentication systems describe above have their own forms of implicit
1976: # input into the authentication process that are described above.
1977: sub change_password_handler {
1978: my ($cmd, $tail, $client) = @_;
1979:
1980: my $userinput = $cmd.":".$tail; # Reconstruct client's string.
1981:
1982: #
1983: # udom - user's domain.
1984: # uname - Username.
1985: # upass - Current password.
1986: # npass - New password.
1.346 raeburn 1987: # context - Context in which this was called
1988: # (preferences or reset_by_email).
1.428 raeburn 1989: # lonhost - HostID of server where request originated
1.222 foxr 1990:
1.428 raeburn 1991: my ($udom,$uname,$upass,$npass,$context,$lonhost)=split(/:/,$tail);
1.222 foxr 1992:
1993: $upass=&unescape($upass);
1994: $npass=&unescape($npass);
1995: &Debug("Trying to change password for $uname");
1996:
1997: # First require that the user can be authenticated with their
1.346 raeburn 1998: # old password unless context was 'reset_by_email':
1999:
1.428 raeburn 2000: my ($validated,$failure);
1.346 raeburn 2001: if ($context eq 'reset_by_email') {
1.428 raeburn 2002: if ($lonhost eq '') {
2003: $failure = 'invalid_client';
2004: } else {
2005: $validated = 1;
2006: }
1.346 raeburn 2007: } else {
2008: $validated = &validate_user($udom, $uname, $upass);
2009: }
1.222 foxr 2010: if($validated) {
2011: my $realpasswd = &get_auth_type($udom, $uname); # Defined since authd.
2012:
2013: my ($howpwd,$contentpwd)=split(/:/,$realpasswd);
2014: if ($howpwd eq 'internal') {
2015: &Debug("internal auth");
2016: my $salt=time;
2017: $salt=substr($salt,6,2);
2018: my $ncpass=crypt($npass,$salt);
2019: if(&rewrite_password_file($udom, $uname, "internal:$ncpass")) {
1.428 raeburn 2020: my $msg="Result of password change for $uname: pwchange_success";
2021: if ($lonhost) {
2022: $msg .= " - request originated from: $lonhost";
2023: }
2024: &logthis($msg);
1.222 foxr 2025: &Reply($client, "ok\n", $userinput);
2026: } else {
2027: &logthis("Unable to open $uname passwd "
2028: ."to change password");
2029: &Failure( $client, "non_authorized\n",$userinput);
2030: }
1.346 raeburn 2031: } elsif ($howpwd eq 'unix' && $context ne 'reset_by_email') {
1.287 foxr 2032: my $result = &change_unix_password($uname, $npass);
1.222 foxr 2033: &logthis("Result of password change for $uname: ".
1.287 foxr 2034: $result);
1.387 albertel 2035: &Reply($client, \$result, $userinput);
1.222 foxr 2036: } else {
2037: # this just means that the current password mode is not
2038: # one we know how to change (e.g the kerberos auth modes or
2039: # locally written auth handler).
2040: #
2041: &Failure( $client, "auth_mode_error\n", $userinput);
2042: }
2043:
1.224 foxr 2044: } else {
1.428 raeburn 2045: if ($failure eq '') {
2046: $failure = 'non_authorized';
2047: }
2048: &Failure( $client, "$failure\n", $userinput);
1.222 foxr 2049: }
2050:
2051: return 1;
2052: }
1.263 albertel 2053: ®ister_handler("passwd", \&change_password_handler, 1, 1, 0);
1.222 foxr 2054:
1.225 foxr 2055: #
2056: # Create a new user. User in this case means a lon-capa user.
2057: # The user must either already exist in some authentication realm
2058: # like kerberos or the /etc/passwd. If not, a user completely local to
2059: # this loncapa system is created.
2060: #
2061: # Parameters:
2062: # $cmd - The command that got us here.
2063: # $tail - Tail of the command (remaining parameters).
2064: # $client - File descriptor connected to client.
2065: # Returns
2066: # 0 - Requested to exit, caller should shut down.
2067: # 1 - Continue processing.
2068: # Implicit inputs:
2069: # The authentication systems describe above have their own forms of implicit
2070: # input into the authentication process that are described above.
2071: sub add_user_handler {
2072:
2073: my ($cmd, $tail, $client) = @_;
2074:
2075:
2076: my ($udom,$uname,$umode,$npass)=split(/:/,$tail);
2077: my $userinput = $cmd.":".$tail; # Reconstruct the full request line.
2078:
2079: &Debug("cmd =".$cmd." $udom =".$udom." uname=".$uname);
2080:
2081:
2082: if($udom eq $currentdomainid) { # Reject new users for other domains...
2083:
2084: my $oldumask=umask(0077);
2085: chomp($npass);
2086: $npass=&unescape($npass);
2087: my $passfilename = &password_path($udom, $uname);
2088: &Debug("Password file created will be:".$passfilename);
2089: if (-e $passfilename) {
2090: &Failure( $client, "already_exists\n", $userinput);
2091: } else {
2092: my $fperror='';
1.264 albertel 2093: if (!&mkpath($passfilename)) {
2094: $fperror="error: ".($!+0)." mkdir failed while attempting "
2095: ."makeuser";
1.225 foxr 2096: }
2097: unless ($fperror) {
1.483 www 2098: my $result=&make_passwd_file($uname,$udom,$umode,$npass, $passfilename);
1.390 raeburn 2099: &Reply($client,\$result, $userinput); #BUGBUG - could be fail
1.225 foxr 2100: } else {
1.387 albertel 2101: &Failure($client, \$fperror, $userinput);
1.225 foxr 2102: }
2103: }
2104: umask($oldumask);
2105: } else {
2106: &Failure($client, "not_right_domain\n",
2107: $userinput); # Even if we are multihomed.
2108:
2109: }
2110: return 1;
2111:
2112: }
2113: ®ister_handler("makeuser", \&add_user_handler, 1, 1, 0);
2114:
2115: #
2116: # Change the authentication method of a user. Note that this may
2117: # also implicitly change the user's password if, for example, the user is
2118: # joining an existing authentication realm. Known authentication realms at
2119: # this time are:
2120: # internal - Purely internal password file (only loncapa knows this user)
2121: # local - Institutionally written authentication module.
2122: # unix - Unix user (/etc/passwd with or without /etc/shadow).
2123: # kerb4 - kerberos version 4
2124: # kerb5 - kerberos version 5
2125: #
2126: # Parameters:
2127: # $cmd - The command that got us here.
2128: # $tail - Tail of the command (remaining parameters).
2129: # $client - File descriptor connected to client.
2130: # Returns
2131: # 0 - Requested to exit, caller should shut down.
2132: # 1 - Continue processing.
2133: # Implicit inputs:
2134: # The authentication systems describe above have their own forms of implicit
2135: # input into the authentication process that are described above.
1.287 foxr 2136: # NOTE:
2137: # This is also used to change the authentication credential values (e.g. passwd).
2138: #
1.225 foxr 2139: #
2140: sub change_authentication_handler {
2141:
2142: my ($cmd, $tail, $client) = @_;
2143:
2144: my $userinput = "$cmd:$tail"; # Reconstruct user input.
2145:
2146: my ($udom,$uname,$umode,$npass)=split(/:/,$tail);
2147: &Debug("cmd = ".$cmd." domain= ".$udom."uname =".$uname." umode= ".$umode);
2148: if ($udom ne $currentdomainid) {
2149: &Failure( $client, "not_right_domain\n", $client);
2150: } else {
2151:
2152: chomp($npass);
2153:
2154: $npass=&unescape($npass);
1.261 foxr 2155: my $oldauth = &get_auth_type($udom, $uname); # Get old auth info.
1.225 foxr 2156: my $passfilename = &password_path($udom, $uname);
2157: if ($passfilename) { # Not allowed to create a new user!!
1.287 foxr 2158: # If just changing the unix passwd. need to arrange to run
1.502 raeburn 2159: # passwd since otherwise make_passwd_file will fail as
2160: # creation of unix authenticated users is no longer supported
2161: # except from the command line, when running make_domain_coordinator.pl
1.287 foxr 2162:
2163: if(($oldauth =~/^unix/) && ($umode eq "unix")) {
2164: my $result = &change_unix_password($uname, $npass);
2165: &logthis("Result of password change for $uname: ".$result);
2166: if ($result eq "ok") {
1.390 raeburn 2167: &Reply($client, \$result);
1.288 albertel 2168: } else {
1.387 albertel 2169: &Failure($client, \$result);
1.287 foxr 2170: }
1.288 albertel 2171: } else {
1.483 www 2172: my $result=&make_passwd_file($uname,$udom,$umode,$npass,$passfilename);
1.287 foxr 2173: #
2174: # If the current auth mode is internal, and the old auth mode was
2175: # unix, or krb*, and the user is an author for this domain,
2176: # re-run manage_permissions for that role in order to be able
2177: # to take ownership of the construction space back to www:www
2178: #
1.502 raeburn 2179:
2180:
1.387 albertel 2181: &Reply($client, \$result, $userinput);
1.261 foxr 2182: }
2183:
2184:
1.225 foxr 2185: } else {
1.251 foxr 2186: &Failure($client, "non_authorized\n", $userinput); # Fail the user now.
1.225 foxr 2187: }
2188: }
2189: return 1;
2190: }
2191: ®ister_handler("changeuserauth", \&change_authentication_handler, 1,1, 0);
2192:
2193: #
2194: # Determines if this is the home server for a user. The home server
2195: # for a user will have his/her lon-capa passwd file. Therefore all we need
2196: # to do is determine if this file exists.
2197: #
2198: # Parameters:
2199: # $cmd - The command that got us here.
2200: # $tail - Tail of the command (remaining parameters).
2201: # $client - File descriptor connected to client.
2202: # Returns
2203: # 0 - Requested to exit, caller should shut down.
2204: # 1 - Continue processing.
2205: # Implicit inputs:
2206: # The authentication systems describe above have their own forms of implicit
2207: # input into the authentication process that are described above.
2208: #
2209: sub is_home_handler {
2210: my ($cmd, $tail, $client) = @_;
2211:
2212: my $userinput = "$cmd:$tail";
2213:
2214: my ($udom,$uname)=split(/:/,$tail);
2215: chomp($uname);
2216: my $passfile = &password_filename($udom, $uname);
2217: if($passfile) {
2218: &Reply( $client, "found\n", $userinput);
2219: } else {
2220: &Failure($client, "not_found\n", $userinput);
2221: }
2222: return 1;
2223: }
2224: ®ister_handler("home", \&is_home_handler, 0,1,0);
2225:
2226: #
1.434 www 2227: # Process an update request for a resource.
2228: # A resource has been modified that we hold a subscription to.
1.225 foxr 2229: # If the resource is not local, then we must update, or at least invalidate our
2230: # cached copy of the resource.
2231: # Parameters:
2232: # $cmd - The command that got us here.
2233: # $tail - Tail of the command (remaining parameters).
2234: # $client - File descriptor connected to client.
2235: # Returns
2236: # 0 - Requested to exit, caller should shut down.
2237: # 1 - Continue processing.
2238: # Implicit inputs:
2239: # The authentication systems describe above have their own forms of implicit
2240: # input into the authentication process that are described above.
2241: #
2242: sub update_resource_handler {
2243:
2244: my ($cmd, $tail, $client) = @_;
2245:
2246: my $userinput = "$cmd:$tail";
2247:
2248: my $fname= $tail; # This allows interactive testing
2249:
2250:
2251: my $ownership=ishome($fname);
2252: if ($ownership eq 'not_owner') {
2253: if (-e $fname) {
1.434 www 2254: # Delete preview file, if exists
2255: unlink("$fname.tmp");
2256: # Get usage stats
1.225 foxr 2257: my ($dev,$ino,$mode,$nlink,$uid,$gid,$rdev,$size,
2258: $atime,$mtime,$ctime,$blksize,$blocks)=stat($fname);
2259: my $now=time;
2260: my $since=$now-$atime;
1.434 www 2261: # If the file has not been used within lonExpire seconds,
2262: # unsubscribe from it and delete local copy
1.225 foxr 2263: if ($since>$perlvar{'lonExpire'}) {
1.365 albertel 2264: my $reply=&Apache::lonnet::reply("unsub:$fname","$clientname");
1.308 albertel 2265: &devalidate_meta_cache($fname);
1.225 foxr 2266: unlink("$fname");
1.334 albertel 2267: unlink("$fname.meta");
1.225 foxr 2268: } else {
1.434 www 2269: # Yes, this is in active use. Get a fresh copy. Since it might be in
2270: # very active use and huge (like a movie), copy it to "in.transfer" filename first.
1.225 foxr 2271: my $transname="$fname.in.transfer";
1.365 albertel 2272: my $remoteurl=&Apache::lonnet::reply("sub:$fname","$clientname");
1.225 foxr 2273: my $response;
1.455 www 2274: # FIXME: cannot replicate files that take more than two minutes to transfer?
2275: # alarm(120);
2276: # FIXME: this should use the LWP mechanism, not internal alarms.
2277: alarm(1200);
1.225 foxr 2278: {
2279: my $ua=new LWP::UserAgent;
2280: my $request=new HTTP::Request('GET',"$remoteurl");
2281: $response=$ua->request($request,$transname);
2282: }
2283: alarm(0);
2284: if ($response->is_error()) {
1.455 www 2285: # FIXME: we should probably clean up here instead of just whine
1.225 foxr 2286: unlink($transname);
2287: my $message=$response->status_line;
2288: &logthis("LWP GET: $message for $fname ($remoteurl)");
2289: } else {
2290: if ($remoteurl!~/\.meta$/) {
1.455 www 2291: # FIXME: isn't there an internal LWP mechanism for this?
1.225 foxr 2292: alarm(120);
2293: {
2294: my $ua=new LWP::UserAgent;
2295: my $mrequest=new HTTP::Request('GET',$remoteurl.'.meta');
2296: my $mresponse=$ua->request($mrequest,$fname.'.meta');
2297: if ($mresponse->is_error()) {
2298: unlink($fname.'.meta');
2299: }
2300: }
2301: alarm(0);
2302: }
1.434 www 2303: # we successfully transfered, copy file over to real name
1.225 foxr 2304: rename($transname,$fname);
1.308 albertel 2305: &devalidate_meta_cache($fname);
1.225 foxr 2306: }
2307: }
2308: &Reply( $client, "ok\n", $userinput);
2309: } else {
2310: &Failure($client, "not_found\n", $userinput);
2311: }
2312: } else {
2313: &Failure($client, "rejected\n", $userinput);
2314: }
2315: return 1;
2316: }
2317: ®ister_handler("update", \&update_resource_handler, 0 ,1, 0);
2318:
1.308 albertel 2319: sub devalidate_meta_cache {
2320: my ($url) = @_;
2321: use Cache::Memcached;
2322: my $memcache = new Cache::Memcached({'servers'=>['127.0.0.1:11211']});
1.365 albertel 2323: $url = &Apache::lonnet::declutter($url);
1.308 albertel 2324: $url =~ s-\.meta$--;
2325: my $id = &escape('meta:'.$url);
2326: $memcache->delete($id);
2327: }
2328:
1.225 foxr 2329: #
1.226 foxr 2330: # Fetch a user file from a remote server to the user's home directory
2331: # userfiles subdir.
1.225 foxr 2332: # Parameters:
2333: # $cmd - The command that got us here.
2334: # $tail - Tail of the command (remaining parameters).
2335: # $client - File descriptor connected to client.
2336: # Returns
2337: # 0 - Requested to exit, caller should shut down.
2338: # 1 - Continue processing.
2339: #
2340: sub fetch_user_file_handler {
2341:
2342: my ($cmd, $tail, $client) = @_;
2343:
2344: my $userinput = "$cmd:$tail";
2345: my $fname = $tail;
1.232 foxr 2346: my ($udom,$uname,$ufile) = ($fname =~ m|^([^/]+)/([^/]+)/(.+)$|);
1.225 foxr 2347: my $udir=&propath($udom,$uname).'/userfiles';
2348: unless (-e $udir) {
2349: mkdir($udir,0770);
2350: }
1.232 foxr 2351: Debug("fetch user file for $fname");
1.225 foxr 2352: if (-e $udir) {
2353: $ufile=~s/^[\.\~]+//;
1.232 foxr 2354:
2355: # IF necessary, create the path right down to the file.
2356: # Note that any regular files in the way of this path are
2357: # wiped out to deal with some earlier folly of mine.
2358:
1.267 raeburn 2359: if (!&mkpath($udir.'/'.$ufile)) {
1.264 albertel 2360: &Failure($client, "unable_to_create\n", $userinput);
1.232 foxr 2361: }
2362:
1.225 foxr 2363: my $destname=$udir.'/'.$ufile;
2364: my $transname=$udir.'/'.$ufile.'.in.transit';
1.476 raeburn 2365: my $clientprotocol=$Apache::lonnet::protocol{$clientname};
2366: $clientprotocol = 'http' if ($clientprotocol ne 'https');
1.486 raeburn 2367: my $clienthost = &Apache::lonnet::hostname($clientname);
2368: my $remoteurl=$clientprotocol.'://'.$clienthost.'/userfiles/'.$fname;
1.225 foxr 2369: my $response;
1.232 foxr 2370: Debug("Remote URL : $remoteurl Transfername $transname Destname: $destname");
1.225 foxr 2371: alarm(120);
2372: {
2373: my $ua=new LWP::UserAgent;
2374: my $request=new HTTP::Request('GET',"$remoteurl");
2375: $response=$ua->request($request,$transname);
2376: }
2377: alarm(0);
2378: if ($response->is_error()) {
2379: unlink($transname);
2380: my $message=$response->status_line;
2381: &logthis("LWP GET: $message for $fname ($remoteurl)");
2382: &Failure($client, "failed\n", $userinput);
2383: } else {
1.232 foxr 2384: Debug("Renaming $transname to $destname");
1.225 foxr 2385: if (!rename($transname,$destname)) {
2386: &logthis("Unable to move $transname to $destname");
2387: unlink($transname);
2388: &Failure($client, "failed\n", $userinput);
2389: } else {
1.495 raeburn 2390: if ($fname =~ /^default.+\.(page|sequence)$/) {
2391: my ($major,$minor) = split(/\./,$clientversion);
2392: if (($major < 2) || ($major == 2 && $minor < 11)) {
2393: my $now = time;
2394: &Apache::lonnet::do_cache_new('crschange',$udom.'_'.$uname,$now,600);
2395: my $key = &escape('internal.contentchange');
2396: my $what = "$key=$now";
2397: my $hashref = &tie_user_hash($udom,$uname,'environment',
2398: &GDBM_WRCREAT(),"P",$what);
2399: if ($hashref) {
2400: $hashref->{$key}=$now;
2401: if (!&untie_user_hash($hashref)) {
2402: &logthis("error: ".($!+0)." untie (GDBM) failed ".
2403: "when updating internal.contentchange");
2404: }
2405: }
2406: }
2407: }
1.225 foxr 2408: &Reply($client, "ok\n", $userinput);
2409: }
2410: }
2411: } else {
2412: &Failure($client, "not_home\n", $userinput);
2413: }
2414: return 1;
2415: }
2416: ®ister_handler("fetchuserfile", \&fetch_user_file_handler, 0, 1, 0);
2417:
1.226 foxr 2418: #
2419: # Remove a file from a user's home directory userfiles subdirectory.
2420: # Parameters:
2421: # cmd - the Lond request keyword that got us here.
2422: # tail - the part of the command past the keyword.
2423: # client- File descriptor connected with the client.
2424: #
2425: # Returns:
2426: # 1 - Continue processing.
2427: sub remove_user_file_handler {
2428: my ($cmd, $tail, $client) = @_;
2429:
2430: my ($fname) = split(/:/, $tail); # Get rid of any tailing :'s lonc may have sent.
2431:
2432: my ($udom,$uname,$ufile) = ($fname =~ m|^([^/]+)/([^/]+)/(.+)$|);
2433: if ($ufile =~m|/\.\./|) {
2434: # any files paths with /../ in them refuse
2435: # to deal with
2436: &Failure($client, "refused\n", "$cmd:$tail");
2437: } else {
2438: my $udir = &propath($udom,$uname);
2439: if (-e $udir) {
2440: my $file=$udir.'/userfiles/'.$ufile;
2441: if (-e $file) {
1.253 foxr 2442: #
2443: # If the file is a regular file unlink is fine...
2444: # However it's possible the client wants a dir.
2445: # removed, in which case rmdir is more approprate:
2446: #
1.240 banghart 2447: if (-f $file){
1.241 albertel 2448: unlink($file);
2449: } elsif(-d $file) {
2450: rmdir($file);
1.240 banghart 2451: }
1.226 foxr 2452: if (-e $file) {
1.253 foxr 2453: # File is still there after we deleted it ?!?
2454:
1.226 foxr 2455: &Failure($client, "failed\n", "$cmd:$tail");
2456: } else {
2457: &Reply($client, "ok\n", "$cmd:$tail");
2458: }
2459: } else {
2460: &Failure($client, "not_found\n", "$cmd:$tail");
2461: }
2462: } else {
2463: &Failure($client, "not_home\n", "$cmd:$tail");
2464: }
2465: }
2466: return 1;
2467: }
2468: ®ister_handler("removeuserfile", \&remove_user_file_handler, 0,1,0);
2469:
1.236 albertel 2470: #
2471: # make a directory in a user's home directory userfiles subdirectory.
2472: # Parameters:
2473: # cmd - the Lond request keyword that got us here.
2474: # tail - the part of the command past the keyword.
2475: # client- File descriptor connected with the client.
2476: #
2477: # Returns:
2478: # 1 - Continue processing.
2479: sub mkdir_user_file_handler {
2480: my ($cmd, $tail, $client) = @_;
2481:
2482: my ($dir) = split(/:/, $tail); # Get rid of any tailing :'s lonc may have sent.
2483: $dir=&unescape($dir);
2484: my ($udom,$uname,$ufile) = ($dir =~ m|^([^/]+)/([^/]+)/(.+)$|);
2485: if ($ufile =~m|/\.\./|) {
2486: # any files paths with /../ in them refuse
2487: # to deal with
2488: &Failure($client, "refused\n", "$cmd:$tail");
2489: } else {
2490: my $udir = &propath($udom,$uname);
2491: if (-e $udir) {
1.264 albertel 2492: my $newdir=$udir.'/userfiles/'.$ufile.'/';
2493: if (!&mkpath($newdir)) {
2494: &Failure($client, "failed\n", "$cmd:$tail");
1.236 albertel 2495: }
1.264 albertel 2496: &Reply($client, "ok\n", "$cmd:$tail");
1.236 albertel 2497: } else {
2498: &Failure($client, "not_home\n", "$cmd:$tail");
2499: }
2500: }
2501: return 1;
2502: }
2503: ®ister_handler("mkdiruserfile", \&mkdir_user_file_handler, 0,1,0);
2504:
1.237 albertel 2505: #
2506: # rename a file in a user's home directory userfiles subdirectory.
2507: # Parameters:
2508: # cmd - the Lond request keyword that got us here.
2509: # tail - the part of the command past the keyword.
2510: # client- File descriptor connected with the client.
2511: #
2512: # Returns:
2513: # 1 - Continue processing.
2514: sub rename_user_file_handler {
2515: my ($cmd, $tail, $client) = @_;
2516:
2517: my ($udom,$uname,$old,$new) = split(/:/, $tail);
2518: $old=&unescape($old);
2519: $new=&unescape($new);
2520: if ($new =~m|/\.\./| || $old =~m|/\.\./|) {
2521: # any files paths with /../ in them refuse to deal with
2522: &Failure($client, "refused\n", "$cmd:$tail");
2523: } else {
2524: my $udir = &propath($udom,$uname);
2525: if (-e $udir) {
2526: my $oldfile=$udir.'/userfiles/'.$old;
2527: my $newfile=$udir.'/userfiles/'.$new;
2528: if (-e $newfile) {
2529: &Failure($client, "exists\n", "$cmd:$tail");
2530: } elsif (! -e $oldfile) {
2531: &Failure($client, "not_found\n", "$cmd:$tail");
2532: } else {
2533: if (!rename($oldfile,$newfile)) {
2534: &Failure($client, "failed\n", "$cmd:$tail");
2535: } else {
2536: &Reply($client, "ok\n", "$cmd:$tail");
2537: }
2538: }
2539: } else {
2540: &Failure($client, "not_home\n", "$cmd:$tail");
2541: }
2542: }
2543: return 1;
2544: }
2545: ®ister_handler("renameuserfile", \&rename_user_file_handler, 0,1,0);
2546:
1.227 foxr 2547: #
1.382 albertel 2548: # Checks if the specified user has an active session on the server
2549: # return ok if so, not_found if not
2550: #
2551: # Parameters:
2552: # cmd - The request keyword that dispatched to tus.
2553: # tail - The tail of the request (colon separated parameters).
2554: # client - Filehandle open on the client.
2555: # Return:
2556: # 1.
2557: sub user_has_session_handler {
2558: my ($cmd, $tail, $client) = @_;
2559:
2560: my ($udom, $uname) = map { &unescape($_) } (split(/:/, $tail));
2561:
2562: opendir(DIR,$perlvar{'lonIDsDir'});
2563: my $filename;
2564: while ($filename=readdir(DIR)) {
2565: last if ($filename=~/^\Q$uname\E_\d+_\Q$udom\E_/);
2566: }
2567: if ($filename) {
2568: &Reply($client, "ok\n", "$cmd:$tail");
2569: } else {
2570: &Failure($client, "not_found\n", "$cmd:$tail");
2571: }
2572: return 1;
2573:
2574: }
2575: ®ister_handler("userhassession", \&user_has_session_handler, 0,1,0);
2576:
2577: #
1.263 albertel 2578: # Authenticate access to a user file by checking that the token the user's
2579: # passed also exists in their session file
1.227 foxr 2580: #
2581: # Parameters:
2582: # cmd - The request keyword that dispatched to tus.
2583: # tail - The tail of the request (colon separated parameters).
2584: # client - Filehandle open on the client.
2585: # Return:
2586: # 1.
2587: sub token_auth_user_file_handler {
2588: my ($cmd, $tail, $client) = @_;
2589:
2590: my ($fname, $session) = split(/:/, $tail);
2591:
2592: chomp($session);
1.393 raeburn 2593: my $reply="non_auth";
1.343 albertel 2594: my $file = $perlvar{'lonIDsDir'}.'/'.$session.'.id';
2595: if (open(ENVIN,"$file")) {
1.332 albertel 2596: flock(ENVIN,LOCK_SH);
1.343 albertel 2597: tie(my %disk_env,'GDBM_File',"$file",&GDBM_READER(),0640);
2598: if (exists($disk_env{"userfile.$fname"})) {
1.393 raeburn 2599: $reply="ok";
1.343 albertel 2600: } else {
2601: foreach my $envname (keys(%disk_env)) {
2602: if ($envname=~ m|^userfile\.\Q$fname\E|) {
1.393 raeburn 2603: $reply="ok";
1.343 albertel 2604: last;
2605: }
2606: }
1.227 foxr 2607: }
1.343 albertel 2608: untie(%disk_env);
1.227 foxr 2609: close(ENVIN);
1.387 albertel 2610: &Reply($client, \$reply, "$cmd:$tail");
1.227 foxr 2611: } else {
2612: &Failure($client, "invalid_token\n", "$cmd:$tail");
2613: }
2614: return 1;
2615:
2616: }
2617: ®ister_handler("tokenauthuserfile", \&token_auth_user_file_handler, 0,1,0);
1.229 foxr 2618:
2619: #
2620: # Unsubscribe from a resource.
2621: #
2622: # Parameters:
2623: # $cmd - The command that got us here.
2624: # $tail - Tail of the command (remaining parameters).
2625: # $client - File descriptor connected to client.
2626: # Returns
2627: # 0 - Requested to exit, caller should shut down.
2628: # 1 - Continue processing.
2629: #
2630: sub unsubscribe_handler {
2631: my ($cmd, $tail, $client) = @_;
2632:
2633: my $userinput= "$cmd:$tail";
2634:
2635: my ($fname) = split(/:/,$tail); # Split in case there's extrs.
2636:
2637: &Debug("Unsubscribing $fname");
2638: if (-e $fname) {
2639: &Debug("Exists");
2640: &Reply($client, &unsub($fname,$clientip), $userinput);
2641: } else {
2642: &Failure($client, "not_found\n", $userinput);
2643: }
2644: return 1;
2645: }
2646: ®ister_handler("unsub", \&unsubscribe_handler, 0, 1, 0);
1.263 albertel 2647:
1.230 foxr 2648: # Subscribe to a resource
2649: #
2650: # Parameters:
2651: # $cmd - The command that got us here.
2652: # $tail - Tail of the command (remaining parameters).
2653: # $client - File descriptor connected to client.
2654: # Returns
2655: # 0 - Requested to exit, caller should shut down.
2656: # 1 - Continue processing.
2657: #
2658: sub subscribe_handler {
2659: my ($cmd, $tail, $client)= @_;
2660:
2661: my $userinput = "$cmd:$tail";
2662:
2663: &Reply( $client, &subscribe($userinput,$clientip), $userinput);
2664:
2665: return 1;
2666: }
2667: ®ister_handler("sub", \&subscribe_handler, 0, 1, 0);
2668:
2669: #
1.379 albertel 2670: # Determine the latest version of a resource (it looks for the highest
2671: # past version and then returns that +1)
1.230 foxr 2672: #
2673: # Parameters:
2674: # $cmd - The command that got us here.
2675: # $tail - Tail of the command (remaining parameters).
1.379 albertel 2676: # (Should consist of an absolute path to a file)
1.230 foxr 2677: # $client - File descriptor connected to client.
2678: # Returns
2679: # 0 - Requested to exit, caller should shut down.
2680: # 1 - Continue processing.
2681: #
2682: sub current_version_handler {
2683: my ($cmd, $tail, $client) = @_;
2684:
2685: my $userinput= "$cmd:$tail";
2686:
2687: my $fname = $tail;
2688: &Reply( $client, ¤tversion($fname)."\n", $userinput);
2689: return 1;
2690:
2691: }
2692: ®ister_handler("currentversion", \¤t_version_handler, 0, 1, 0);
2693:
2694: # Make an entry in a user's activity log.
2695: #
2696: # Parameters:
2697: # $cmd - The command that got us here.
2698: # $tail - Tail of the command (remaining parameters).
2699: # $client - File descriptor connected to client.
2700: # Returns
2701: # 0 - Requested to exit, caller should shut down.
2702: # 1 - Continue processing.
2703: #
2704: sub activity_log_handler {
2705: my ($cmd, $tail, $client) = @_;
2706:
2707:
2708: my $userinput= "$cmd:$tail";
2709:
2710: my ($udom,$uname,$what)=split(/:/,$tail);
2711: chomp($what);
2712: my $proname=&propath($udom,$uname);
2713: my $now=time;
2714: my $hfh;
2715: if ($hfh=IO::File->new(">>$proname/activity.log")) {
2716: print $hfh "$now:$clientname:$what\n";
2717: &Reply( $client, "ok\n", $userinput);
2718: } else {
2719: &Failure($client, "error: ".($!+0)." IO::File->new Failed "
2720: ."while attempting log\n",
2721: $userinput);
2722: }
2723:
2724: return 1;
2725: }
1.263 albertel 2726: ®ister_handler("log", \&activity_log_handler, 0, 1, 0);
1.230 foxr 2727:
2728: #
2729: # Put a namespace entry in a user profile hash.
2730: # My druthers would be for this to be an encrypted interaction too.
2731: # anything that might be an inadvertent covert channel about either
2732: # user authentication or user personal information....
2733: #
2734: # Parameters:
2735: # $cmd - The command that got us here.
2736: # $tail - Tail of the command (remaining parameters).
2737: # $client - File descriptor connected to client.
2738: # Returns
2739: # 0 - Requested to exit, caller should shut down.
2740: # 1 - Continue processing.
2741: #
2742: sub put_user_profile_entry {
2743: my ($cmd, $tail, $client) = @_;
1.229 foxr 2744:
1.230 foxr 2745: my $userinput = "$cmd:$tail";
2746:
1.242 raeburn 2747: my ($udom,$uname,$namespace,$what) =split(/:/,$tail,4);
1.230 foxr 2748: if ($namespace ne 'roles') {
2749: chomp($what);
2750: my $hashref = &tie_user_hash($udom, $uname, $namespace,
2751: &GDBM_WRCREAT(),"P",$what);
2752: if($hashref) {
2753: my @pairs=split(/\&/,$what);
2754: foreach my $pair (@pairs) {
2755: my ($key,$value)=split(/=/,$pair);
2756: $hashref->{$key}=$value;
2757: }
1.311 albertel 2758: if (&untie_user_hash($hashref)) {
1.230 foxr 2759: &Reply( $client, "ok\n", $userinput);
2760: } else {
2761: &Failure($client, "error: ".($!+0)." untie(GDBM) failed ".
2762: "while attempting put\n",
2763: $userinput);
2764: }
2765: } else {
1.316 albertel 2766: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
1.230 foxr 2767: "while attempting put\n", $userinput);
2768: }
2769: } else {
2770: &Failure( $client, "refused\n", $userinput);
2771: }
2772:
2773: return 1;
2774: }
2775: ®ister_handler("put", \&put_user_profile_entry, 0, 1, 0);
2776:
1.283 albertel 2777: # Put a piece of new data in hash, returns error if entry already exists
2778: # Parameters:
2779: # $cmd - The command that got us here.
2780: # $tail - Tail of the command (remaining parameters).
2781: # $client - File descriptor connected to client.
2782: # Returns
2783: # 0 - Requested to exit, caller should shut down.
2784: # 1 - Continue processing.
2785: #
2786: sub newput_user_profile_entry {
2787: my ($cmd, $tail, $client) = @_;
2788:
2789: my $userinput = "$cmd:$tail";
2790:
2791: my ($udom,$uname,$namespace,$what) =split(/:/,$tail,4);
2792: if ($namespace eq 'roles') {
2793: &Failure( $client, "refused\n", $userinput);
2794: return 1;
2795: }
2796:
2797: chomp($what);
2798:
2799: my $hashref = &tie_user_hash($udom, $uname, $namespace,
2800: &GDBM_WRCREAT(),"N",$what);
2801: if(!$hashref) {
1.316 albertel 2802: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
1.283 albertel 2803: "while attempting put\n", $userinput);
2804: return 1;
2805: }
2806:
2807: my @pairs=split(/\&/,$what);
2808: foreach my $pair (@pairs) {
2809: my ($key,$value)=split(/=/,$pair);
2810: if (exists($hashref->{$key})) {
1.513 raeburn 2811: if (!&untie_user_hash($hashref)) {
2812: &logthis("error: ".($!+0)." untie (GDBM) failed ".
2813: "while attempting newput - early out as key exists");
2814: }
2815: &Failure($client, "key_exists: ".$key."\n",$userinput);
2816: return 1;
1.283 albertel 2817: }
2818: }
2819:
2820: foreach my $pair (@pairs) {
2821: my ($key,$value)=split(/=/,$pair);
2822: $hashref->{$key}=$value;
2823: }
2824:
1.311 albertel 2825: if (&untie_user_hash($hashref)) {
1.283 albertel 2826: &Reply( $client, "ok\n", $userinput);
2827: } else {
2828: &Failure($client, "error: ".($!+0)." untie(GDBM) failed ".
2829: "while attempting put\n",
2830: $userinput);
2831: }
2832: return 1;
2833: }
2834: ®ister_handler("newput", \&newput_user_profile_entry, 0, 1, 0);
2835:
1.230 foxr 2836: #
2837: # Increment a profile entry in the user history file.
2838: # The history contains keyword value pairs. In this case,
2839: # The value itself is a pair of numbers. The first, the current value
2840: # the second an increment that this function applies to the current
2841: # value.
2842: #
2843: # Parameters:
2844: # $cmd - The command that got us here.
2845: # $tail - Tail of the command (remaining parameters).
2846: # $client - File descriptor connected to client.
2847: # Returns
2848: # 0 - Requested to exit, caller should shut down.
2849: # 1 - Continue processing.
2850: #
2851: sub increment_user_value_handler {
2852: my ($cmd, $tail, $client) = @_;
2853:
2854: my $userinput = "$cmd:$tail";
2855:
2856: my ($udom,$uname,$namespace,$what) =split(/:/,$tail);
2857: if ($namespace ne 'roles') {
2858: chomp($what);
2859: my $hashref = &tie_user_hash($udom, $uname,
2860: $namespace, &GDBM_WRCREAT(),
2861: "P",$what);
2862: if ($hashref) {
2863: my @pairs=split(/\&/,$what);
2864: foreach my $pair (@pairs) {
2865: my ($key,$value)=split(/=/,$pair);
1.284 raeburn 2866: $value = &unescape($value);
1.230 foxr 2867: # We could check that we have a number...
2868: if (! defined($value) || $value eq '') {
2869: $value = 1;
2870: }
2871: $hashref->{$key}+=$value;
1.284 raeburn 2872: if ($namespace eq 'nohist_resourcetracker') {
2873: if ($hashref->{$key} < 0) {
2874: $hashref->{$key} = 0;
2875: }
2876: }
1.230 foxr 2877: }
1.311 albertel 2878: if (&untie_user_hash($hashref)) {
1.230 foxr 2879: &Reply( $client, "ok\n", $userinput);
2880: } else {
2881: &Failure($client, "error: ".($!+0)." untie(GDBM) failed ".
2882: "while attempting inc\n", $userinput);
2883: }
2884: } else {
2885: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
2886: "while attempting inc\n", $userinput);
2887: }
2888: } else {
2889: &Failure($client, "refused\n", $userinput);
2890: }
2891:
2892: return 1;
2893: }
2894: ®ister_handler("inc", \&increment_user_value_handler, 0, 1, 0);
2895:
2896: #
2897: # Put a new role for a user. Roles are LonCAPA's packaging of permissions.
2898: # Each 'role' a user has implies a set of permissions. Adding a new role
2899: # for a person grants the permissions packaged with that role
2900: # to that user when the role is selected.
2901: #
2902: # Parameters:
2903: # $cmd - The command string (rolesput).
2904: # $tail - The remainder of the request line. For rolesput this
2905: # consists of a colon separated list that contains:
2906: # The domain and user that is granting the role (logged).
2907: # The domain and user that is getting the role.
2908: # The roles being granted as a set of & separated pairs.
2909: # each pair a key value pair.
2910: # $client - File descriptor connected to the client.
2911: # Returns:
2912: # 0 - If the daemon should exit
2913: # 1 - To continue processing.
2914: #
2915: #
2916: sub roles_put_handler {
2917: my ($cmd, $tail, $client) = @_;
2918:
2919: my $userinput = "$cmd:$tail";
2920:
2921: my ( $exedom, $exeuser, $udom, $uname, $what) = split(/:/,$tail);
2922:
2923:
2924: my $namespace='roles';
2925: chomp($what);
2926: my $hashref = &tie_user_hash($udom, $uname, $namespace,
2927: &GDBM_WRCREAT(), "P",
2928: "$exedom:$exeuser:$what");
2929: #
2930: # Log the attempt to set a role. The {}'s here ensure that the file
2931: # handle is open for the minimal amount of time. Since the flush
2932: # is done on close this improves the chances the log will be an un-
2933: # corrupted ordered thing.
2934: if ($hashref) {
1.261 foxr 2935: my $pass_entry = &get_auth_type($udom, $uname);
2936: my ($auth_type,$pwd) = split(/:/, $pass_entry);
2937: $auth_type = $auth_type.":";
1.230 foxr 2938: my @pairs=split(/\&/,$what);
2939: foreach my $pair (@pairs) {
2940: my ($key,$value)=split(/=/,$pair);
2941: &manage_permissions($key, $udom, $uname,
1.260 foxr 2942: $auth_type);
1.230 foxr 2943: $hashref->{$key}=$value;
2944: }
1.311 albertel 2945: if (&untie_user_hash($hashref)) {
1.230 foxr 2946: &Reply($client, "ok\n", $userinput);
2947: } else {
2948: &Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ".
2949: "while attempting rolesput\n", $userinput);
2950: }
2951: } else {
2952: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
2953: "while attempting rolesput\n", $userinput);
2954: }
2955: return 1;
2956: }
2957: ®ister_handler("rolesput", \&roles_put_handler, 1,1,0); # Encoded client only.
2958:
2959: #
1.231 foxr 2960: # Deletes (removes) a role for a user. This is equivalent to removing
2961: # a permissions package associated with the role from the user's profile.
2962: #
2963: # Parameters:
2964: # $cmd - The command (rolesdel)
2965: # $tail - The remainder of the request line. This consists
2966: # of:
2967: # The domain and user requesting the change (logged)
2968: # The domain and user being changed.
2969: # The roles being revoked. These are shipped to us
2970: # as a bunch of & separated role name keywords.
2971: # $client - The file handle open on the client.
2972: # Returns:
2973: # 1 - Continue processing
2974: # 0 - Exit.
2975: #
2976: sub roles_delete_handler {
2977: my ($cmd, $tail, $client) = @_;
2978:
2979: my $userinput = "$cmd:$tail";
2980:
2981: my ($exedom,$exeuser,$udom,$uname,$what)=split(/:/,$tail);
2982: &Debug("cmd = ".$cmd." exedom= ".$exedom."user = ".$exeuser." udom=".$udom.
2983: "what = ".$what);
2984: my $namespace='roles';
2985: chomp($what);
2986: my $hashref = &tie_user_hash($udom, $uname, $namespace,
2987: &GDBM_WRCREAT(), "D",
2988: "$exedom:$exeuser:$what");
2989:
2990: if ($hashref) {
2991: my @rolekeys=split(/\&/,$what);
2992:
2993: foreach my $key (@rolekeys) {
2994: delete $hashref->{$key};
2995: }
1.315 albertel 2996: if (&untie_user_hash($hashref)) {
1.231 foxr 2997: &Reply($client, "ok\n", $userinput);
2998: } else {
2999: &Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ".
3000: "while attempting rolesdel\n", $userinput);
3001: }
3002: } else {
3003: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
3004: "while attempting rolesdel\n", $userinput);
3005: }
3006:
3007: return 1;
3008: }
3009: ®ister_handler("rolesdel", \&roles_delete_handler, 1,1, 0); # Encoded client only
3010:
3011: # Unencrypted get from a user's profile database. See
3012: # GetProfileEntryEncrypted for a version that does end-to-end encryption.
3013: # This function retrieves a keyed item from a specific named database in the
3014: # user's directory.
3015: #
3016: # Parameters:
3017: # $cmd - Command request keyword (get).
3018: # $tail - Tail of the command. This is a colon separated list
3019: # consisting of the domain and username that uniquely
3020: # identifies the profile,
3021: # The 'namespace' which selects the gdbm file to
3022: # do the lookup in,
3023: # & separated list of keys to lookup. Note that
3024: # the values are returned as an & separated list too.
3025: # $client - File descriptor open on the client.
3026: # Returns:
3027: # 1 - Continue processing.
3028: # 0 - Exit.
3029: #
3030: sub get_profile_entry {
3031: my ($cmd, $tail, $client) = @_;
3032:
3033: my $userinput= "$cmd:$tail";
3034:
3035: my ($udom,$uname,$namespace,$what) = split(/:/,$tail);
3036: chomp($what);
1.255 foxr 3037:
1.390 raeburn 3038:
1.255 foxr 3039: my $replystring = read_profile($udom, $uname, $namespace, $what);
3040: my ($first) = split(/:/,$replystring);
3041: if($first ne "error") {
1.387 albertel 3042: &Reply($client, \$replystring, $userinput);
1.231 foxr 3043: } else {
1.255 foxr 3044: &Failure($client, $replystring." while attempting get\n", $userinput);
1.231 foxr 3045: }
3046: return 1;
1.255 foxr 3047:
3048:
1.231 foxr 3049: }
3050: ®ister_handler("get", \&get_profile_entry, 0,1,0);
3051:
3052: #
3053: # Process the encrypted get request. Note that the request is sent
3054: # in clear, but the reply is encrypted. This is a small covert channel:
3055: # information about the sensitive keys is given to the snooper. Just not
3056: # information about the values of the sensitive key. Hmm if I wanted to
3057: # know these I'd snoop for the egets. Get the profile item names from them
3058: # and then issue a get for them since there's no enforcement of the
3059: # requirement of an encrypted get for particular profile items. If I
3060: # were re-doing this, I'd force the request to be encrypted as well as the
3061: # reply. I'd also just enforce encrypted transactions for all gets since
3062: # that would prevent any covert channel snooping.
3063: #
3064: # Parameters:
3065: # $cmd - Command keyword of request (eget).
3066: # $tail - Tail of the command. See GetProfileEntry
# for more information about this.
3067: # $client - File open on the client.
3068: # Returns:
3069: # 1 - Continue processing
3070: # 0 - server should exit.
3071: sub get_profile_entry_encrypted {
3072: my ($cmd, $tail, $client) = @_;
3073:
3074: my $userinput = "$cmd:$tail";
3075:
1.339 albertel 3076: my ($udom,$uname,$namespace,$what) = split(/:/,$tail);
1.231 foxr 3077: chomp($what);
1.255 foxr 3078: my $qresult = read_profile($udom, $uname, $namespace, $what);
3079: my ($first) = split(/:/, $qresult);
3080: if($first ne "error") {
3081:
3082: if ($cipher) {
3083: my $cmdlength=length($qresult);
3084: $qresult.=" ";
3085: my $encqresult='';
3086: for(my $encidx=0;$encidx<=$cmdlength;$encidx+=8) {
3087: $encqresult.= unpack("H16",
3088: $cipher->encrypt(substr($qresult,
3089: $encidx,
3090: 8)));
3091: }
3092: &Reply( $client, "enc:$cmdlength:$encqresult\n", $userinput);
3093: } else {
1.231 foxr 3094: &Failure( $client, "error:no_key\n", $userinput);
3095: }
3096: } else {
1.255 foxr 3097: &Failure($client, "$qresult while attempting eget\n", $userinput);
3098:
1.231 foxr 3099: }
3100:
3101: return 1;
3102: }
1.255 foxr 3103: ®ister_handler("eget", \&get_profile_entry_encrypted, 0, 1, 0);
1.263 albertel 3104:
1.231 foxr 3105: #
3106: # Deletes a key in a user profile database.
3107: #
3108: # Parameters:
3109: # $cmd - Command keyword (del).
3110: # $tail - Command tail. IN this case a colon
3111: # separated list containing:
3112: # The domain and user that identifies uniquely
3113: # the identity of the user.
3114: # The profile namespace (name of the profile
3115: # database file).
3116: # & separated list of keywords to delete.
3117: # $client - File open on client socket.
3118: # Returns:
3119: # 1 - Continue processing
3120: # 0 - Exit server.
3121: #
3122: #
3123: sub delete_profile_entry {
3124: my ($cmd, $tail, $client) = @_;
3125:
3126: my $userinput = "cmd:$tail";
3127:
3128: my ($udom,$uname,$namespace,$what) = split(/:/,$tail);
3129: chomp($what);
3130: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3131: &GDBM_WRCREAT(),
3132: "D",$what);
3133: if ($hashref) {
3134: my @keys=split(/\&/,$what);
3135: foreach my $key (@keys) {
3136: delete($hashref->{$key});
3137: }
1.315 albertel 3138: if (&untie_user_hash($hashref)) {
1.231 foxr 3139: &Reply($client, "ok\n", $userinput);
3140: } else {
3141: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
3142: "while attempting del\n", $userinput);
3143: }
3144: } else {
3145: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
3146: "while attempting del\n", $userinput);
3147: }
3148: return 1;
3149: }
3150: ®ister_handler("del", \&delete_profile_entry, 0, 1, 0);
1.263 albertel 3151:
1.231 foxr 3152: #
3153: # List the set of keys that are defined in a profile database file.
3154: # A successful reply from this will contain an & separated list of
3155: # the keys.
3156: # Parameters:
3157: # $cmd - Command request (keys).
3158: # $tail - Remainder of the request, a colon separated
3159: # list containing domain/user that identifies the
3160: # user being queried, and the database namespace
3161: # (database filename essentially).
3162: # $client - File open on the client.
3163: # Returns:
3164: # 1 - Continue processing.
3165: # 0 - Exit the server.
3166: #
3167: sub get_profile_keys {
3168: my ($cmd, $tail, $client) = @_;
3169:
3170: my $userinput = "$cmd:$tail";
3171:
3172: my ($udom,$uname,$namespace)=split(/:/,$tail);
3173: my $qresult='';
3174: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3175: &GDBM_READER());
3176: if ($hashref) {
3177: foreach my $key (keys %$hashref) {
3178: $qresult.="$key&";
3179: }
1.315 albertel 3180: if (&untie_user_hash($hashref)) {
1.231 foxr 3181: $qresult=~s/\&$//;
1.387 albertel 3182: &Reply($client, \$qresult, $userinput);
1.231 foxr 3183: } else {
3184: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
3185: "while attempting keys\n", $userinput);
3186: }
3187: } else {
3188: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
3189: "while attempting keys\n", $userinput);
3190: }
3191:
3192: return 1;
3193: }
3194: ®ister_handler("keys", \&get_profile_keys, 0, 1, 0);
3195:
3196: #
3197: # Dump the contents of a user profile database.
3198: # Note that this constitutes a very large covert channel too since
3199: # the dump will return sensitive information that is not encrypted.
3200: # The naive security assumption is that the session negotiation ensures
3201: # our client is trusted and I don't believe that's assured at present.
3202: # Sure want badly to go to ssl or tls. Of course if my peer isn't really
3203: # a LonCAPA node they could have negotiated an encryption key too so >sigh<.
3204: #
3205: # Parameters:
3206: # $cmd - The command request keyword (currentdump).
3207: # $tail - Remainder of the request, consisting of a colon
3208: # separated list that has the domain/username and
3209: # the namespace to dump (database file).
3210: # $client - file open on the remote client.
3211: # Returns:
3212: # 1 - Continue processing.
3213: # 0 - Exit the server.
3214: #
3215: sub dump_profile_database {
3216: my ($cmd, $tail, $client) = @_;
3217:
1.494 droeschl 3218: my $res = LONCAPA::Lond::dump_profile_database($tail);
3219:
3220: if ($res =~ /^error:/) {
3221: Failure($client, \$res, "$cmd:$tail");
3222: } else {
3223: Reply($client, \$res, "$cmd:$tail");
3224: }
3225:
3226: return 1;
3227:
3228: #TODO remove
1.231 foxr 3229: my $userinput = "$cmd:$tail";
3230:
3231: my ($udom,$uname,$namespace) = split(/:/,$tail);
3232: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3233: &GDBM_READER());
3234: if ($hashref) {
3235: # Structure of %data:
3236: # $data{$symb}->{$parameter}=$value;
3237: # $data{$symb}->{'v.'.$parameter}=$version;
3238: # since $parameter will be unescaped, we do not
3239: # have to worry about silly parameter names...
3240:
3241: my $qresult='';
3242: my %data = (); # A hash of anonymous hashes..
3243: while (my ($key,$value) = each(%$hashref)) {
3244: my ($v,$symb,$param) = split(/:/,$key);
3245: next if ($v eq 'version' || $symb eq 'keys');
3246: next if (exists($data{$symb}) &&
3247: exists($data{$symb}->{$param}) &&
3248: $data{$symb}->{'v.'.$param} > $v);
3249: $data{$symb}->{$param}=$value;
3250: $data{$symb}->{'v.'.$param}=$v;
3251: }
1.311 albertel 3252: if (&untie_user_hash($hashref)) {
1.231 foxr 3253: while (my ($symb,$param_hash) = each(%data)) {
3254: while(my ($param,$value) = each (%$param_hash)){
3255: next if ($param =~ /^v\./); # Ignore versions...
3256: #
3257: # Just dump the symb=value pairs separated by &
3258: #
3259: $qresult.=$symb.':'.$param.'='.$value.'&';
3260: }
3261: }
3262: chop($qresult);
1.387 albertel 3263: &Reply($client , \$qresult, $userinput);
1.231 foxr 3264: } else {
3265: &Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ".
3266: "while attempting currentdump\n", $userinput);
3267: }
3268: } else {
3269: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
3270: "while attempting currentdump\n", $userinput);
3271: }
3272:
3273: return 1;
3274: }
3275: ®ister_handler("currentdump", \&dump_profile_database, 0, 1, 0);
3276:
3277: #
3278: # Dump a profile database with an optional regular expression
3279: # to match against the keys. In this dump, no effort is made
3280: # to separate symb from version information. Presumably the
3281: # databases that are dumped by this command are of a different
3282: # structure. Need to look at this and improve the documentation of
3283: # both this and the currentdump handler.
3284: # Parameters:
3285: # $cmd - The command keyword.
3286: # $tail - All of the characters after the $cmd:
3287: # These are expected to be a colon
3288: # separated list containing:
3289: # domain/user - identifying the user.
3290: # namespace - identifying the database.
3291: # regexp - optional regular expression
3292: # that is matched against
3293: # database keywords to do
3294: # selective dumps.
1.488 raeburn 3295: # range - optional range of entries
3296: # e.g., 10-20 would return the
3297: # 10th to 19th items, etc.
1.231 foxr 3298: # $client - Channel open on the client.
3299: # Returns:
3300: # 1 - Continue processing.
3301: # Side effects:
3302: # response is written to $client.
3303: #
3304: sub dump_with_regexp {
3305: my ($cmd, $tail, $client) = @_;
3306:
1.494 droeschl 3307: my $res = LONCAPA::Lond::dump_with_regexp($tail, $clientversion);
1.490 droeschl 3308:
3309: if ($res =~ /^error:/) {
3310: Failure($client, \$res, "$cmd:$tail");
3311: } else {
3312: Reply($client, \$res, "$cmd:$tail");
3313: }
1.231 foxr 3314:
3315: return 1;
3316: }
3317: ®ister_handler("dump", \&dump_with_regexp, 0, 1, 0);
3318:
3319: # Store a set of key=value pairs associated with a versioned name.
3320: #
3321: # Parameters:
3322: # $cmd - Request command keyword.
3323: # $tail - Tail of the request. This is a colon
3324: # separated list containing:
3325: # domain/user - User and authentication domain.
3326: # namespace - Name of the database being modified
3327: # rid - Resource keyword to modify.
3328: # what - new value associated with rid.
1.512 raeburn 3329: # laststore - (optional) version=timestamp
3330: # for most recent transaction for rid
3331: # in namespace, when cstore was called
1.231 foxr 3332: #
3333: # $client - Socket open on the client.
3334: #
3335: #
3336: # Returns:
3337: # 1 (keep on processing).
3338: # Side-Effects:
3339: # Writes to the client
1.512 raeburn 3340: # Successful storage will cause either 'ok', or, if $laststore was included
3341: # in the tail of the request, and the version number for the last transaction
3342: # is larger than the version in $laststore, delay:$numtrans , where $numtrans
3343: # is the number of store evevnts recorded for rid in namespace since
3344: # lonnet::store() was called by the client.
3345: #
1.231 foxr 3346: sub store_handler {
3347: my ($cmd, $tail, $client) = @_;
3348:
3349: my $userinput = "$cmd:$tail";
1.512 raeburn 3350: chomp($tail);
3351: my ($udom,$uname,$namespace,$rid,$what,$laststore) =split(/:/,$tail);
1.231 foxr 3352: if ($namespace ne 'roles') {
3353:
3354: my @pairs=split(/\&/,$what);
3355: my $hashref = &tie_user_hash($udom, $uname, $namespace,
1.268 albertel 3356: &GDBM_WRCREAT(), "S",
1.231 foxr 3357: "$rid:$what");
3358: if ($hashref) {
3359: my $now = time;
1.512 raeburn 3360: my $numtrans;
3361: if ($laststore) {
3362: my ($previousversion,$previoustime) = split(/\=/,$laststore);
3363: my ($lastversion,$lasttime) = (0,0);
3364: $lastversion = $hashref->{"version:$rid"};
3365: if ($lastversion) {
3366: $lasttime = $hashref->{"$lastversion:$rid:timestamp"};
3367: }
3368: if (($previousversion) && ($previousversion !~ /\D/)) {
3369: if (($lastversion > $previousversion) && ($lasttime >= $previoustime)) {
3370: $numtrans = $lastversion - $previousversion;
3371: }
3372: } elsif ($lastversion) {
3373: $numtrans = $lastversion;
3374: }
3375: if ($numtrans) {
3376: $numtrans =~ s/D//g;
3377: }
3378: }
1.231 foxr 3379: $hashref->{"version:$rid"}++;
3380: my $version=$hashref->{"version:$rid"};
3381: my $allkeys='';
3382: foreach my $pair (@pairs) {
3383: my ($key,$value)=split(/=/,$pair);
3384: $allkeys.=$key.':';
3385: $hashref->{"$version:$rid:$key"}=$value;
3386: }
3387: $hashref->{"$version:$rid:timestamp"}=$now;
3388: $allkeys.='timestamp';
3389: $hashref->{"$version:keys:$rid"}=$allkeys;
1.311 albertel 3390: if (&untie_user_hash($hashref)) {
1.512 raeburn 3391: my $msg = 'ok';
3392: if ($numtrans) {
3393: $msg = 'delay:'.$numtrans;
3394: }
3395: &Reply($client, "$msg\n", $userinput);
1.231 foxr 3396: } else {
3397: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
3398: "while attempting store\n", $userinput);
3399: }
3400: } else {
3401: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
3402: "while attempting store\n", $userinput);
3403: }
3404: } else {
3405: &Failure($client, "refused\n", $userinput);
3406: }
3407:
3408: return 1;
3409: }
3410: ®ister_handler("store", \&store_handler, 0, 1, 0);
1.263 albertel 3411:
1.323 albertel 3412: # Modify a set of key=value pairs associated with a versioned name.
3413: #
3414: # Parameters:
3415: # $cmd - Request command keyword.
3416: # $tail - Tail of the request. This is a colon
3417: # separated list containing:
3418: # domain/user - User and authentication domain.
3419: # namespace - Name of the database being modified
3420: # rid - Resource keyword to modify.
3421: # v - Version item to modify
3422: # what - new value associated with rid.
3423: #
3424: # $client - Socket open on the client.
3425: #
3426: #
3427: # Returns:
3428: # 1 (keep on processing).
3429: # Side-Effects:
3430: # Writes to the client
3431: sub putstore_handler {
3432: my ($cmd, $tail, $client) = @_;
3433:
3434: my $userinput = "$cmd:$tail";
3435:
3436: my ($udom,$uname,$namespace,$rid,$v,$what) =split(/:/,$tail);
3437: if ($namespace ne 'roles') {
3438:
3439: chomp($what);
3440: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3441: &GDBM_WRCREAT(), "M",
3442: "$rid:$v:$what");
3443: if ($hashref) {
3444: my $now = time;
3445: my %data = &hash_extract($what);
3446: my @allkeys;
3447: while (my($key,$value) = each(%data)) {
3448: push(@allkeys,$key);
3449: $hashref->{"$v:$rid:$key"} = $value;
3450: }
3451: my $allkeys = join(':',@allkeys);
3452: $hashref->{"$v:keys:$rid"}=$allkeys;
3453:
3454: if (&untie_user_hash($hashref)) {
3455: &Reply($client, "ok\n", $userinput);
3456: } else {
3457: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
3458: "while attempting store\n", $userinput);
3459: }
3460: } else {
3461: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
3462: "while attempting store\n", $userinput);
3463: }
3464: } else {
3465: &Failure($client, "refused\n", $userinput);
3466: }
3467:
3468: return 1;
3469: }
3470: ®ister_handler("putstore", \&putstore_handler, 0, 1, 0);
3471:
3472: sub hash_extract {
3473: my ($str)=@_;
3474: my %hash;
3475: foreach my $pair (split(/\&/,$str)) {
3476: my ($key,$value)=split(/=/,$pair);
3477: $hash{$key}=$value;
3478: }
3479: return (%hash);
3480: }
3481: sub hash_to_str {
3482: my ($hash_ref)=@_;
3483: my $str;
3484: foreach my $key (keys(%$hash_ref)) {
3485: $str.=$key.'='.$hash_ref->{$key}.'&';
3486: }
3487: $str=~s/\&$//;
3488: return $str;
3489: }
3490:
1.231 foxr 3491: #
3492: # Dump out all versions of a resource that has key=value pairs associated
3493: # with it for each version. These resources are built up via the store
3494: # command.
3495: #
3496: # Parameters:
3497: # $cmd - Command keyword.
3498: # $tail - Remainder of the request which consists of:
3499: # domain/user - User and auth. domain.
3500: # namespace - name of resource database.
3501: # rid - Resource id.
3502: # $client - socket open on the client.
3503: #
3504: # Returns:
3505: # 1 indicating the caller should not yet exit.
3506: # Side-effects:
3507: # Writes a reply to the client.
3508: # The reply is a string of the following shape:
3509: # version=current&version:keys=k1:k2...&1:k1=v1&1:k2=v2...
3510: # Where the 1 above represents version 1.
3511: # this continues for all pairs of keys in all versions.
3512: #
3513: #
3514: #
3515: #
3516: sub restore_handler {
3517: my ($cmd, $tail, $client) = @_;
3518:
3519: my $userinput = "$cmd:$tail"; # Only used for logging purposes.
1.351 banghart 3520: my ($udom,$uname,$namespace,$rid) = split(/:/,$tail);
1.352 albertel 3521: $namespace=~s/\//\_/g;
1.350 albertel 3522: $namespace = &LONCAPA::clean_username($namespace);
1.349 albertel 3523:
1.231 foxr 3524: chomp($rid);
3525: my $qresult='';
1.309 albertel 3526: my $hashref = &tie_user_hash($udom, $uname, $namespace, &GDBM_READER());
3527: if ($hashref) {
3528: my $version=$hashref->{"version:$rid"};
1.231 foxr 3529: $qresult.="version=$version&";
3530: my $scope;
3531: for ($scope=1;$scope<=$version;$scope++) {
1.309 albertel 3532: my $vkeys=$hashref->{"$scope:keys:$rid"};
1.231 foxr 3533: my @keys=split(/:/,$vkeys);
3534: my $key;
3535: $qresult.="$scope:keys=$vkeys&";
3536: foreach $key (@keys) {
1.309 albertel 3537: $qresult.="$scope:$key=".$hashref->{"$scope:$rid:$key"}."&";
1.231 foxr 3538: }
3539: }
1.311 albertel 3540: if (&untie_user_hash($hashref)) {
1.231 foxr 3541: $qresult=~s/\&$//;
1.387 albertel 3542: &Reply( $client, \$qresult, $userinput);
1.231 foxr 3543: } else {
3544: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
3545: "while attempting restore\n", $userinput);
3546: }
3547: } else {
3548: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
3549: "while attempting restore\n", $userinput);
3550: }
3551:
3552: return 1;
3553:
3554:
3555: }
3556: ®ister_handler("restore", \&restore_handler, 0,1,0);
1.234 foxr 3557:
3558: #
1.324 raeburn 3559: # Add a chat message to a synchronous discussion board.
1.234 foxr 3560: #
3561: # Parameters:
3562: # $cmd - Request keyword.
3563: # $tail - Tail of the command. A colon separated list
3564: # containing:
3565: # cdom - Domain on which the chat board lives
1.324 raeburn 3566: # cnum - Course containing the chat board.
3567: # newpost - Body of the posting.
3568: # group - Optional group, if chat board is only
3569: # accessible in a group within the course
1.234 foxr 3570: # $client - Socket open on the client.
3571: # Returns:
3572: # 1 - Indicating caller should keep on processing.
3573: #
3574: # Side-effects:
3575: # writes a reply to the client.
3576: #
3577: #
3578: sub send_chat_handler {
3579: my ($cmd, $tail, $client) = @_;
3580:
3581:
3582: my $userinput = "$cmd:$tail";
3583:
1.324 raeburn 3584: my ($cdom,$cnum,$newpost,$group)=split(/\:/,$tail);
3585: &chat_add($cdom,$cnum,$newpost,$group);
1.234 foxr 3586: &Reply($client, "ok\n", $userinput);
3587:
3588: return 1;
3589: }
3590: ®ister_handler("chatsend", \&send_chat_handler, 0, 1, 0);
1.263 albertel 3591:
1.234 foxr 3592: #
1.324 raeburn 3593: # Retrieve the set of chat messages from a discussion board.
1.234 foxr 3594: #
3595: # Parameters:
3596: # $cmd - Command keyword that initiated the request.
3597: # $tail - Remainder of the request after the command
3598: # keyword. In this case a colon separated list of
3599: # chat domain - Which discussion board.
3600: # chat id - Discussion thread(?)
3601: # domain/user - Authentication domain and username
3602: # of the requesting person.
1.324 raeburn 3603: # group - Optional course group containing
3604: # the board.
1.234 foxr 3605: # $client - Socket open on the client program.
3606: # Returns:
3607: # 1 - continue processing
3608: # Side effects:
3609: # Response is written to the client.
3610: #
3611: sub retrieve_chat_handler {
3612: my ($cmd, $tail, $client) = @_;
3613:
3614:
3615: my $userinput = "$cmd:$tail";
3616:
1.324 raeburn 3617: my ($cdom,$cnum,$udom,$uname,$group)=split(/\:/,$tail);
1.234 foxr 3618: my $reply='';
1.324 raeburn 3619: foreach (&get_chat($cdom,$cnum,$udom,$uname,$group)) {
1.234 foxr 3620: $reply.=&escape($_).':';
3621: }
3622: $reply=~s/\:$//;
1.387 albertel 3623: &Reply($client, \$reply, $userinput);
1.234 foxr 3624:
3625:
3626: return 1;
3627: }
3628: ®ister_handler("chatretr", \&retrieve_chat_handler, 0, 1, 0);
3629:
3630: #
3631: # Initiate a query of an sql database. SQL query repsonses get put in
3632: # a file for later retrieval. This prevents sql query results from
3633: # bottlenecking the system. Note that with loncnew, perhaps this is
3634: # less of an issue since multiple outstanding requests can be concurrently
3635: # serviced.
3636: #
3637: # Parameters:
3638: # $cmd - COmmand keyword that initiated the request.
3639: # $tail - Remainder of the command after the keyword.
3640: # For this function, this consists of a query and
3641: # 3 arguments that are self-documentingly labelled
3642: # in the original arg1, arg2, arg3.
3643: # $client - Socket open on the client.
3644: # Return:
3645: # 1 - Indicating processing should continue.
3646: # Side-effects:
3647: # a reply is written to $client.
3648: #
3649: sub send_query_handler {
3650: my ($cmd, $tail, $client) = @_;
3651:
3652:
3653: my $userinput = "$cmd:$tail";
3654:
3655: my ($query,$arg1,$arg2,$arg3)=split(/\:/,$tail);
3656: $query=~s/\n*$//g;
3657: &Reply($client, "". &sql_reply("$clientname\&$query".
3658: "\&$arg1"."\&$arg2"."\&$arg3")."\n",
3659: $userinput);
3660:
3661: return 1;
3662: }
3663: ®ister_handler("querysend", \&send_query_handler, 0, 1, 0);
3664:
3665: #
3666: # Add a reply to an sql query. SQL queries are done asyncrhonously.
3667: # The query is submitted via a "querysend" transaction.
3668: # There it is passed on to the lonsql daemon, queued and issued to
3669: # mysql.
3670: # This transaction is invoked when the sql transaction is complete
3671: # it stores the query results in flie and indicates query completion.
3672: # presumably local software then fetches this response... I'm guessing
3673: # the sequence is: lonc does a querysend, we ask lonsql to do it.
3674: # lonsql on completion of the query interacts with the lond of our
3675: # client to do a query reply storing two files:
3676: # - id - The results of the query.
3677: # - id.end - Indicating the transaction completed.
3678: # NOTE: id is a unique id assigned to the query and querysend time.
3679: # Parameters:
3680: # $cmd - Command keyword that initiated this request.
3681: # $tail - Remainder of the tail. In this case that's a colon
3682: # separated list containing the query Id and the
3683: # results of the query.
3684: # $client - Socket open on the client.
3685: # Return:
3686: # 1 - Indicating that we should continue processing.
3687: # Side effects:
3688: # ok written to the client.
3689: #
3690: sub reply_query_handler {
3691: my ($cmd, $tail, $client) = @_;
3692:
3693:
3694: my $userinput = "$cmd:$tail";
3695:
1.339 albertel 3696: my ($id,$reply)=split(/:/,$tail);
1.234 foxr 3697: my $store;
3698: my $execdir=$perlvar{'lonDaemons'};
3699: if ($store=IO::File->new(">$execdir/tmp/$id")) {
3700: $reply=~s/\&/\n/g;
3701: print $store $reply;
3702: close $store;
3703: my $store2=IO::File->new(">$execdir/tmp/$id.end");
3704: print $store2 "done\n";
3705: close $store2;
3706: &Reply($client, "ok\n", $userinput);
3707: } else {
3708: &Failure($client, "error: ".($!+0)
3709: ." IO::File->new Failed ".
3710: "while attempting queryreply\n", $userinput);
3711: }
3712:
3713:
3714: return 1;
3715: }
3716: ®ister_handler("queryreply", \&reply_query_handler, 0, 1, 0);
3717:
3718: #
3719: # Process the courseidput request. Not quite sure what this means
3720: # at the system level sense. It appears a gdbm file in the
3721: # /home/httpd/lonUsers/$domain/nohist_courseids is tied and
3722: # a set of entries made in that database.
3723: #
3724: # Parameters:
3725: # $cmd - The command keyword that initiated this request.
3726: # $tail - Tail of the command. In this case consists of a colon
3727: # separated list contaning the domain to apply this to and
3728: # an ampersand separated list of keyword=value pairs.
1.272 raeburn 3729: # Each value is a colon separated list that includes:
3730: # description, institutional code and course owner.
3731: # For backward compatibility with versions included
3732: # in LON-CAPA 1.1.X (and earlier) and 1.2.X, institutional
3733: # code and/or course owner are preserved from the existing
3734: # record when writing a new record in response to 1.1 or
3735: # 1.2 implementations of lonnet::flushcourselogs().
3736: #
1.234 foxr 3737: # $client - Socket open on the client.
3738: # Returns:
3739: # 1 - indicating that processing should continue
3740: #
3741: # Side effects:
3742: # reply is written to the client.
3743: #
3744: sub put_course_id_handler {
3745: my ($cmd, $tail, $client) = @_;
3746:
3747:
3748: my $userinput = "$cmd:$tail";
3749:
1.266 raeburn 3750: my ($udom, $what) = split(/:/, $tail,2);
1.234 foxr 3751: chomp($what);
3752: my $now=time;
3753: my @pairs=split(/\&/,$what);
3754:
3755: my $hashref = &tie_domain_hash($udom, "nohist_courseids", &GDBM_WRCREAT());
3756: if ($hashref) {
3757: foreach my $pair (@pairs) {
1.271 raeburn 3758: my ($key,$courseinfo) = split(/=/,$pair,2);
3759: $courseinfo =~ s/=/:/g;
1.384 raeburn 3760: if (defined($hashref->{$key})) {
3761: my $value = &Apache::lonnet::thaw_unescape($hashref->{$key});
3762: if (ref($value) eq 'HASH') {
3763: my @items = ('description','inst_code','owner','type');
3764: my @new_items = split(/:/,$courseinfo,-1);
3765: my %storehash;
3766: for (my $i=0; $i<@new_items; $i++) {
1.391 raeburn 3767: $storehash{$items[$i]} = &unescape($new_items[$i]);
1.384 raeburn 3768: }
3769: $hashref->{$key} =
3770: &Apache::lonnet::freeze_escape(\%storehash);
3771: my $unesc_key = &unescape($key);
3772: $hashref->{&escape('lasttime:'.$unesc_key)} = $now;
3773: next;
1.383 raeburn 3774: }
1.384 raeburn 3775: }
3776: my @current_items = split(/:/,$hashref->{$key},-1);
3777: shift(@current_items); # remove description
3778: pop(@current_items); # remove last access
3779: my $numcurrent = scalar(@current_items);
3780: if ($numcurrent > 3) {
3781: $numcurrent = 3;
3782: }
3783: my @new_items = split(/:/,$courseinfo,-1);
3784: my $numnew = scalar(@new_items);
3785: if ($numcurrent > 0) {
3786: if ($numnew <= $numcurrent) { # flushcourselogs() from pre 2.2
3787: for (my $j=$numcurrent-$numnew; $j>=0; $j--) {
3788: $courseinfo .= ':'.$current_items[$numcurrent-$j-1];
1.333 raeburn 3789: }
1.272 raeburn 3790: }
3791: }
1.384 raeburn 3792: $hashref->{$key}=$courseinfo.':'.$now;
1.234 foxr 3793: }
1.311 albertel 3794: if (&untie_domain_hash($hashref)) {
1.253 foxr 3795: &Reply( $client, "ok\n", $userinput);
1.234 foxr 3796: } else {
1.253 foxr 3797: &Failure($client, "error: ".($!+0)
1.234 foxr 3798: ." untie(GDBM) Failed ".
3799: "while attempting courseidput\n", $userinput);
3800: }
3801: } else {
1.253 foxr 3802: &Failure($client, "error: ".($!+0)
1.234 foxr 3803: ." tie(GDBM) Failed ".
3804: "while attempting courseidput\n", $userinput);
3805: }
3806:
3807: return 1;
3808: }
3809: ®ister_handler("courseidput", \&put_course_id_handler, 0, 1, 0);
3810:
1.383 raeburn 3811: sub put_course_id_hash_handler {
3812: my ($cmd, $tail, $client) = @_;
3813: my $userinput = "$cmd:$tail";
1.384 raeburn 3814: my ($udom,$mode,$what) = split(/:/, $tail,3);
1.383 raeburn 3815: chomp($what);
3816: my $now=time;
3817: my @pairs=split(/\&/,$what);
1.384 raeburn 3818: my $hashref = &tie_domain_hash($udom, "nohist_courseids", &GDBM_WRCREAT());
1.383 raeburn 3819: if ($hashref) {
3820: foreach my $pair (@pairs) {
3821: my ($key,$value)=split(/=/,$pair);
1.384 raeburn 3822: my $unesc_key = &unescape($key);
3823: if ($mode ne 'timeonly') {
3824: if (!defined($hashref->{&escape('lasttime:'.$unesc_key)})) {
3825: my $curritems = &Apache::lonnet::thaw_unescape($key);
3826: if (ref($curritems) ne 'HASH') {
3827: my @current_items = split(/:/,$hashref->{$key},-1);
3828: my $lasttime = pop(@current_items);
3829: $hashref->{&escape('lasttime:'.$unesc_key)} = $lasttime;
3830: } else {
3831: $hashref->{&escape('lasttime:'.$unesc_key)} = '';
3832: }
3833: }
3834: $hashref->{$key} = $value;
3835: }
3836: if ($mode ne 'notime') {
3837: $hashref->{&escape('lasttime:'.$unesc_key)} = $now;
3838: }
1.383 raeburn 3839: }
3840: if (&untie_domain_hash($hashref)) {
3841: &Reply($client, "ok\n", $userinput);
3842: } else {
3843: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
3844: "while attempting courseidputhash\n", $userinput);
3845: }
3846: } else {
3847: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
3848: "while attempting courseidputhash\n", $userinput);
3849: }
3850: return 1;
3851: }
3852: ®ister_handler("courseidputhash", \&put_course_id_hash_handler, 0, 1, 0);
3853:
1.234 foxr 3854: # Retrieves the value of a course id resource keyword pattern
3855: # defined since a starting date. Both the starting date and the
3856: # keyword pattern are optional. If the starting date is not supplied it
3857: # is treated as the beginning of time. If the pattern is not found,
3858: # it is treatred as "." matching everything.
3859: #
3860: # Parameters:
3861: # $cmd - Command keyword that resulted in us being dispatched.
3862: # $tail - The remainder of the command that, in this case, consists
3863: # of a colon separated list of:
3864: # domain - The domain in which the course database is
3865: # defined.
3866: # since - Optional parameter describing the minimum
3867: # time of definition(?) of the resources that
3868: # will match the dump.
3869: # description - regular expression that is used to filter
3870: # the dump. Only keywords matching this regexp
3871: # will be used.
1.272 raeburn 3872: # institutional code - optional supplied code to filter
3873: # the dump. Only courses with an institutional code
3874: # that match the supplied code will be returned.
1.336 raeburn 3875: # owner - optional supplied username and domain of owner to
3876: # filter the dump. Only courses for which the course
3877: # owner matches the supplied username and/or domain
3878: # will be returned. Pre-2.2.0 legacy entries from
3879: # nohist_courseiddump will only contain usernames.
1.384 raeburn 3880: # type - optional parameter for selection
1.418 raeburn 3881: # regexp_ok - if 1 or -1 allow the supplied institutional code
3882: # filter to behave as a regular expression:
3883: # 1 will not exclude the course if the instcode matches the RE
3884: # -1 will exclude the course if the instcode matches the RE
1.384 raeburn 3885: # rtn_as_hash - whether to return the information available for
3886: # each matched item as a frozen hash of all
3887: # key, value pairs in the item's hash, or as a
3888: # colon-separated list of (in order) description,
3889: # institutional code, and course owner.
1.404 raeburn 3890: # selfenrollonly - filter by courses allowing self-enrollment
3891: # now or in the future (selfenrollonly = 1).
3892: # catfilter - filter by course category, assigned to a course
3893: # using manually defined categories (i.e., not
1.407 raeburn 3894: # self-cataloging based on on institutional code).
1.404 raeburn 3895: # showhidden - include course in results even if course
1.407 raeburn 3896: # was set to be excluded from course catalog (DC only).
1.404 raeburn 3897: # caller - if set to 'coursecatalog', courses set to be hidden
3898: # from course catalog will be excluded from results (unless
3899: # overridden by "showhidden".
1.427 raeburn 3900: # cloner - escaped username:domain of course cloner (if picking course to
1.419 raeburn 3901: # clone).
3902: # cc_clone_list - escaped comma separated list of courses for which
3903: # course cloner has active CC role (and so can clone
3904: # automatically).
1.427 raeburn 3905: # cloneonly - filter by courses for which cloner has rights to clone.
3906: # createdbefore - include courses for which creation date preceeded this date.
3907: # createdafter - include courses for which creation date followed this date.
3908: # creationcontext - include courses created in specified context
1.404 raeburn 3909: #
1.445 raeburn 3910: # domcloner - flag to indicate if user can create CCs in course's domain.
1.505 raeburn 3911: # If so, ability to clone course is automatic.
3912: # hasuniquecode - filter by courses for which a six character unique code has
3913: # been set.
1.445 raeburn 3914: #
1.234 foxr 3915: # $client - The socket open on the client.
3916: # Returns:
3917: # 1 - Continue processing.
3918: # Side Effects:
3919: # a reply is written to $client.
3920: sub dump_course_id_handler {
3921: my ($cmd, $tail, $client) = @_;
1.494 droeschl 3922:
3923: my $res = LONCAPA::Lond::dump_course_id_handler($tail);
3924: if ($res =~ /^error:/) {
3925: Failure($client, \$res, "$cmd:$tail");
3926: } else {
3927: Reply($client, \$res, "$cmd:$tail");
3928: }
3929:
3930: return 1;
3931:
3932: #TODO remove
1.234 foxr 3933: my $userinput = "$cmd:$tail";
3934:
1.333 raeburn 3935: my ($udom,$since,$description,$instcodefilter,$ownerfilter,$coursefilter,
1.404 raeburn 3936: $typefilter,$regexp_ok,$rtn_as_hash,$selfenrollonly,$catfilter,$showhidden,
1.427 raeburn 3937: $caller,$cloner,$cc_clone_list,$cloneonly,$createdbefore,$createdafter,
1.505 raeburn 3938: $creationcontext,$domcloner,$hasuniquecode) =split(/:/,$tail);
1.397 raeburn 3939: my $now = time;
1.419 raeburn 3940: my ($cloneruname,$clonerudom,%cc_clone);
1.234 foxr 3941: if (defined($description)) {
3942: $description=&unescape($description);
3943: } else {
3944: $description='.';
3945: }
1.266 raeburn 3946: if (defined($instcodefilter)) {
3947: $instcodefilter=&unescape($instcodefilter);
3948: } else {
3949: $instcodefilter='.';
3950: }
1.336 raeburn 3951: my ($ownerunamefilter,$ownerdomfilter);
1.266 raeburn 3952: if (defined($ownerfilter)) {
3953: $ownerfilter=&unescape($ownerfilter);
1.336 raeburn 3954: if ($ownerfilter ne '.' && defined($ownerfilter)) {
3955: if ($ownerfilter =~ /^([^:]*):([^:]*)$/) {
3956: $ownerunamefilter = $1;
3957: $ownerdomfilter = $2;
3958: } else {
3959: $ownerunamefilter = $ownerfilter;
3960: $ownerdomfilter = '';
3961: }
3962: }
1.266 raeburn 3963: } else {
3964: $ownerfilter='.';
3965: }
1.336 raeburn 3966:
1.282 raeburn 3967: if (defined($coursefilter)) {
3968: $coursefilter=&unescape($coursefilter);
3969: } else {
3970: $coursefilter='.';
3971: }
1.333 raeburn 3972: if (defined($typefilter)) {
3973: $typefilter=&unescape($typefilter);
3974: } else {
3975: $typefilter='.';
3976: }
1.344 raeburn 3977: if (defined($regexp_ok)) {
3978: $regexp_ok=&unescape($regexp_ok);
3979: }
1.401 raeburn 3980: if (defined($catfilter)) {
3981: $catfilter=&unescape($catfilter);
3982: }
1.419 raeburn 3983: if (defined($cloner)) {
3984: $cloner = &unescape($cloner);
3985: ($cloneruname,$clonerudom) = ($cloner =~ /^($LONCAPA::match_username):($LONCAPA::match_domain)$/);
3986: }
3987: if (defined($cc_clone_list)) {
3988: $cc_clone_list = &unescape($cc_clone_list);
3989: my @cc_cloners = split('&',$cc_clone_list);
3990: foreach my $cid (@cc_cloners) {
3991: my ($clonedom,$clonenum) = split(':',$cid);
3992: next if ($clonedom ne $udom);
3993: $cc_clone{$clonedom.'_'.$clonenum} = 1;
3994: }
3995: }
1.431 raeburn 3996: if ($createdbefore ne '') {
1.427 raeburn 3997: $createdbefore = &unescape($createdbefore);
3998: } else {
3999: $createdbefore = 0;
4000: }
1.431 raeburn 4001: if ($createdafter ne '') {
1.427 raeburn 4002: $createdafter = &unescape($createdafter);
4003: } else {
4004: $createdafter = 0;
4005: }
1.431 raeburn 4006: if ($creationcontext ne '') {
1.427 raeburn 4007: $creationcontext = &unescape($creationcontext);
4008: } else {
4009: $creationcontext = '.';
4010: }
1.505 raeburn 4011: unless ($hasuniquecode) {
4012: $hasuniquecode = '.';
4013: }
1.384 raeburn 4014: my $unpack = 1;
1.485 raeburn 4015: if ($description eq '.' && $instcodefilter eq '.' && $ownerfilter eq '.' &&
1.384 raeburn 4016: $typefilter eq '.') {
4017: $unpack = 0;
4018: }
4019: if (!defined($since)) { $since=0; }
1.234 foxr 4020: my $qresult='';
4021: my $hashref = &tie_domain_hash($udom, "nohist_courseids", &GDBM_WRCREAT());
4022: if ($hashref) {
1.384 raeburn 4023: while (my ($key,$value) = each(%$hashref)) {
1.397 raeburn 4024: my ($unesc_key,$lasttime_key,$lasttime,$is_hash,%val,
1.427 raeburn 4025: %unesc_val,$selfenroll_end,$selfenroll_types,$created,
4026: $context);
1.384 raeburn 4027: $unesc_key = &unescape($key);
4028: if ($unesc_key =~ /^lasttime:/) {
4029: next;
4030: } else {
4031: $lasttime_key = &escape('lasttime:'.$unesc_key);
4032: }
4033: if ($hashref->{$lasttime_key} ne '') {
4034: $lasttime = $hashref->{$lasttime_key};
4035: next if ($lasttime<$since);
4036: }
1.419 raeburn 4037: my ($canclone,$valchange);
1.384 raeburn 4038: my $items = &Apache::lonnet::thaw_unescape($value);
4039: if (ref($items) eq 'HASH') {
1.429 raeburn 4040: if ($hashref->{$lasttime_key} eq '') {
1.430 raeburn 4041: next if ($since > 1);
1.429 raeburn 4042: }
1.384 raeburn 4043: $is_hash = 1;
1.445 raeburn 4044: if ($domcloner) {
4045: $canclone = 1;
4046: } elsif (defined($clonerudom)) {
1.419 raeburn 4047: if ($items->{'cloners'}) {
4048: my @cloneable = split(',',$items->{'cloners'});
4049: if (@cloneable) {
4050: if (grep(/^\*$/,@cloneable)) {
4051: $canclone = 1;
4052: } elsif (grep(/^\*:\Q$clonerudom\E$/,@cloneable)) {
4053: $canclone = 1;
4054: } elsif (grep(/^\Q$cloneruname\E:\Q$clonerudom\E$/,@cloneable)) {
4055: $canclone = 1;
4056: }
4057: }
4058: unless ($canclone) {
4059: if ($cloneruname ne '' && $clonerudom ne '') {
4060: if ($cc_clone{$unesc_key}) {
4061: $canclone = 1;
4062: $items->{'cloners'} .= ','.$cloneruname.':'.
4063: $clonerudom;
4064: $valchange = 1;
4065: }
4066: }
4067: }
4068: } elsif (defined($cloneruname)) {
4069: if ($cc_clone{$unesc_key}) {
4070: $canclone = 1;
4071: $items->{'cloners'} = $cloneruname.':'.$clonerudom;
4072: $valchange = 1;
4073: }
1.437 raeburn 4074: unless ($canclone) {
4075: if ($items->{'owner'} =~ /:/) {
4076: if ($items->{'owner'} eq $cloner) {
4077: $canclone = 1;
4078: }
1.444 raeburn 4079: } elsif ($cloner eq $items->{'owner'}.':'.$udom) {
1.437 raeburn 4080: $canclone = 1;
4081: }
4082: if ($canclone) {
4083: $items->{'cloners'} = $cloneruname.':'.$clonerudom;
4084: $valchange = 1;
4085: }
4086: }
1.419 raeburn 4087: }
4088: }
1.384 raeburn 4089: if ($unpack || !$rtn_as_hash) {
4090: $unesc_val{'descr'} = $items->{'description'};
4091: $unesc_val{'inst_code'} = $items->{'inst_code'};
4092: $unesc_val{'owner'} = $items->{'owner'};
4093: $unesc_val{'type'} = $items->{'type'};
1.419 raeburn 4094: $unesc_val{'cloners'} = $items->{'cloners'};
1.427 raeburn 4095: $unesc_val{'created'} = $items->{'created'};
4096: $unesc_val{'context'} = $items->{'context'};
1.404 raeburn 4097: }
4098: $selfenroll_types = $items->{'selfenroll_types'};
4099: $selfenroll_end = $items->{'selfenroll_end_date'};
1.427 raeburn 4100: $created = $items->{'created'};
4101: $context = $items->{'context'};
1.505 raeburn 4102: if ($hasuniquecode ne '.') {
4103: next unless ($items->{'uniquecode'});
4104: }
1.404 raeburn 4105: if ($selfenrollonly) {
4106: next if (!$selfenroll_types);
4107: if (($selfenroll_end > 0) && ($selfenroll_end <= $now)) {
4108: next;
1.397 raeburn 4109: }
1.404 raeburn 4110: }
1.427 raeburn 4111: if ($creationcontext ne '.') {
4112: next if (($context ne '') && ($context ne $creationcontext));
4113: }
4114: if ($createdbefore > 0) {
4115: next if (($created eq '') || ($created > $createdbefore));
4116: }
4117: if ($createdafter > 0) {
4118: next if (($created eq '') || ($created <= $createdafter));
4119: }
1.404 raeburn 4120: if ($catfilter ne '') {
1.406 raeburn 4121: next if ($items->{'categories'} eq '');
4122: my @categories = split('&',$items->{'categories'});
1.407 raeburn 4123: next if (@categories == 0);
4124: my @subcats = split('&',$catfilter);
4125: my $matchcat = 0;
4126: foreach my $cat (@categories) {
4127: if (grep(/^\Q$cat\E$/,@subcats)) {
4128: $matchcat = 1;
4129: last;
4130: }
4131: }
4132: next if (!$matchcat);
1.404 raeburn 4133: }
4134: if ($caller eq 'coursecatalog') {
1.405 raeburn 4135: if ($items->{'hidefromcat'} eq 'yes') {
4136: next if !$showhidden;
1.401 raeburn 4137: }
1.384 raeburn 4138: }
1.383 raeburn 4139: } else {
1.401 raeburn 4140: next if ($catfilter ne '');
1.419 raeburn 4141: next if ($selfenrollonly);
1.427 raeburn 4142: next if ($createdbefore || $createdafter);
4143: next if ($creationcontext ne '.');
1.419 raeburn 4144: if ((defined($clonerudom)) && (defined($cloneruname))) {
4145: if ($cc_clone{$unesc_key}) {
4146: $canclone = 1;
4147: $val{'cloners'} = &escape($cloneruname.':'.$clonerudom);
4148: }
4149: }
1.384 raeburn 4150: $is_hash = 0;
1.388 raeburn 4151: my @courseitems = split(/:/,$value);
1.403 raeburn 4152: $lasttime = pop(@courseitems);
1.402 raeburn 4153: if ($hashref->{$lasttime_key} eq '') {
4154: next if ($lasttime<$since);
4155: }
1.384 raeburn 4156: ($val{'descr'},$val{'inst_code'},$val{'owner'},$val{'type'}) = @courseitems;
1.383 raeburn 4157: }
1.419 raeburn 4158: if ($cloneonly) {
4159: next unless ($canclone);
4160: }
1.266 raeburn 4161: my $match = 1;
1.384 raeburn 4162: if ($description ne '.') {
4163: if (!$is_hash) {
4164: $unesc_val{'descr'} = &unescape($val{'descr'});
4165: }
4166: if (eval{$unesc_val{'descr'} !~ /\Q$description\E/i}) {
1.266 raeburn 4167: $match = 0;
1.384 raeburn 4168: }
1.266 raeburn 4169: }
1.384 raeburn 4170: if ($instcodefilter ne '.') {
4171: if (!$is_hash) {
4172: $unesc_val{'inst_code'} = &unescape($val{'inst_code'});
4173: }
1.418 raeburn 4174: if ($regexp_ok == 1) {
1.384 raeburn 4175: if (eval{$unesc_val{'inst_code'} !~ /$instcodefilter/}) {
1.344 raeburn 4176: $match = 0;
4177: }
1.418 raeburn 4178: } elsif ($regexp_ok == -1) {
4179: if (eval{$unesc_val{'inst_code'} =~ /$instcodefilter/}) {
4180: $match = 0;
4181: }
1.344 raeburn 4182: } else {
1.384 raeburn 4183: if (eval{$unesc_val{'inst_code'} !~ /\Q$instcodefilter\E/i}) {
1.344 raeburn 4184: $match = 0;
4185: }
1.266 raeburn 4186: }
1.234 foxr 4187: }
1.384 raeburn 4188: if ($ownerfilter ne '.') {
4189: if (!$is_hash) {
4190: $unesc_val{'owner'} = &unescape($val{'owner'});
4191: }
1.336 raeburn 4192: if (($ownerunamefilter ne '') && ($ownerdomfilter ne '')) {
1.384 raeburn 4193: if ($unesc_val{'owner'} =~ /:/) {
4194: if (eval{$unesc_val{'owner'} !~
4195: /\Q$ownerunamefilter\E:\Q$ownerdomfilter\E$/i}) {
1.336 raeburn 4196: $match = 0;
4197: }
4198: } else {
1.384 raeburn 4199: if (eval{$unesc_val{'owner'} !~ /\Q$ownerunamefilter\E/i}) {
1.336 raeburn 4200: $match = 0;
4201: }
4202: }
4203: } elsif ($ownerunamefilter ne '') {
1.384 raeburn 4204: if ($unesc_val{'owner'} =~ /:/) {
4205: if (eval{$unesc_val{'owner'} !~ /\Q$ownerunamefilter\E:[^:]+$/i}) {
1.336 raeburn 4206: $match = 0;
4207: }
4208: } else {
1.384 raeburn 4209: if (eval{$unesc_val{'owner'} !~ /\Q$ownerunamefilter\E/i}) {
1.336 raeburn 4210: $match = 0;
4211: }
4212: }
4213: } elsif ($ownerdomfilter ne '') {
1.384 raeburn 4214: if ($unesc_val{'owner'} =~ /:/) {
4215: if (eval{$unesc_val{'owner'} !~ /^[^:]+:\Q$ownerdomfilter\E/}) {
1.336 raeburn 4216: $match = 0;
4217: }
4218: } else {
4219: if ($ownerdomfilter ne $udom) {
4220: $match = 0;
4221: }
4222: }
1.266 raeburn 4223: }
4224: }
1.384 raeburn 4225: if ($coursefilter ne '.') {
4226: if (eval{$unesc_key !~ /^$udom(_)\Q$coursefilter\E$/}) {
1.282 raeburn 4227: $match = 0;
4228: }
4229: }
1.384 raeburn 4230: if ($typefilter ne '.') {
4231: if (!$is_hash) {
4232: $unesc_val{'type'} = &unescape($val{'type'});
4233: }
4234: if ($unesc_val{'type'} eq '') {
1.333 raeburn 4235: if ($typefilter ne 'Course') {
4236: $match = 0;
4237: }
1.383 raeburn 4238: } else {
1.384 raeburn 4239: if (eval{$unesc_val{'type'} !~ /^\Q$typefilter\E$/}) {
1.333 raeburn 4240: $match = 0;
4241: }
4242: }
4243: }
1.266 raeburn 4244: if ($match == 1) {
1.384 raeburn 4245: if ($rtn_as_hash) {
4246: if ($is_hash) {
1.419 raeburn 4247: if ($valchange) {
4248: my $newvalue = &Apache::lonnet::freeze_escape($items);
4249: $qresult.=$key.'='.$newvalue.'&';
4250: } else {
4251: $qresult.=$key.'='.$value.'&';
4252: }
1.384 raeburn 4253: } else {
1.388 raeburn 4254: my %rtnhash = ( 'description' => &unescape($val{'descr'}),
4255: 'inst_code' => &unescape($val{'inst_code'}),
4256: 'owner' => &unescape($val{'owner'}),
4257: 'type' => &unescape($val{'type'}),
1.419 raeburn 4258: 'cloners' => &unescape($val{'cloners'}),
1.384 raeburn 4259: );
4260: my $items = &Apache::lonnet::freeze_escape(\%rtnhash);
4261: $qresult.=$key.'='.$items.'&';
4262: }
1.383 raeburn 4263: } else {
1.384 raeburn 4264: if ($is_hash) {
4265: $qresult .= $key.'='.&escape($unesc_val{'descr'}).':'.
4266: &escape($unesc_val{'inst_code'}).':'.
4267: &escape($unesc_val{'owner'}).'&';
4268: } else {
4269: $qresult .= $key.'='.$val{'descr'}.':'.$val{'inst_code'}.
4270: ':'.$val{'owner'}.'&';
4271: }
1.383 raeburn 4272: }
1.266 raeburn 4273: }
1.234 foxr 4274: }
1.311 albertel 4275: if (&untie_domain_hash($hashref)) {
1.234 foxr 4276: chop($qresult);
1.387 albertel 4277: &Reply($client, \$qresult, $userinput);
1.234 foxr 4278: } else {
4279: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4280: "while attempting courseiddump\n", $userinput);
4281: }
4282: } else {
4283: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
4284: "while attempting courseiddump\n", $userinput);
4285: }
4286: return 1;
4287: }
4288: ®ister_handler("courseiddump", \&dump_course_id_handler, 0, 1, 0);
1.238 foxr 4289:
1.438 raeburn 4290: sub course_lastaccess_handler {
4291: my ($cmd, $tail, $client) = @_;
4292: my $userinput = "$cmd:$tail";
4293: my ($cdom,$cnum) = split(':',$tail);
4294: my (%lastaccess,$qresult);
4295: my $hashref = &tie_domain_hash($cdom, "nohist_courseids", &GDBM_WRCREAT());
4296: if ($hashref) {
4297: while (my ($key,$value) = each(%$hashref)) {
4298: my ($unesc_key,$lasttime);
4299: $unesc_key = &unescape($key);
4300: if ($cnum) {
4301: next unless ($unesc_key =~ /\Q$cdom\E_\Q$cnum\E$/);
4302: }
4303: if ($unesc_key =~ /^lasttime:($LONCAPA::match_domain\_$LONCAPA::match_courseid)/) {
4304: $lastaccess{$1} = $value;
4305: } else {
4306: my $items = &Apache::lonnet::thaw_unescape($value);
4307: if (ref($items) eq 'HASH') {
4308: unless ($lastaccess{$unesc_key}) {
4309: $lastaccess{$unesc_key} = '';
4310: }
4311: } else {
4312: my @courseitems = split(':',$value);
4313: $lastaccess{$unesc_key} = pop(@courseitems);
4314: }
4315: }
4316: }
4317: foreach my $cid (sort(keys(%lastaccess))) {
4318: $qresult.=&escape($cid).'='.$lastaccess{$cid}.'&';
4319: }
4320: if (&untie_domain_hash($hashref)) {
4321: if ($qresult) {
4322: chop($qresult);
4323: }
4324: &Reply($client, \$qresult, $userinput);
4325: } else {
4326: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4327: "while attempting lastacourseaccess\n", $userinput);
4328: }
4329: } else {
4330: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
4331: "while attempting lastcourseaccess\n", $userinput);
4332: }
4333: return 1;
4334: }
4335: ®ister_handler("courselastaccess",\&course_lastaccess_handler, 0, 1, 0);
4336:
1.238 foxr 4337: #
1.348 raeburn 4338: # Puts an unencrypted entry in a namespace db file at the domain level
4339: #
4340: # Parameters:
4341: # $cmd - The command that got us here.
4342: # $tail - Tail of the command (remaining parameters).
4343: # $client - File descriptor connected to client.
4344: # Returns
4345: # 0 - Requested to exit, caller should shut down.
4346: # 1 - Continue processing.
4347: # Side effects:
4348: # reply is written to $client.
4349: #
4350: sub put_domain_handler {
4351: my ($cmd,$tail,$client) = @_;
4352:
4353: my $userinput = "$cmd:$tail";
4354:
4355: my ($udom,$namespace,$what) =split(/:/,$tail,3);
4356: chomp($what);
4357: my @pairs=split(/\&/,$what);
4358: my $hashref = &tie_domain_hash($udom, "$namespace", &GDBM_WRCREAT(),
4359: "P", $what);
4360: if ($hashref) {
4361: foreach my $pair (@pairs) {
4362: my ($key,$value)=split(/=/,$pair);
4363: $hashref->{$key}=$value;
4364: }
4365: if (&untie_domain_hash($hashref)) {
4366: &Reply($client, "ok\n", $userinput);
4367: } else {
4368: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4369: "while attempting putdom\n", $userinput);
4370: }
4371: } else {
4372: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
4373: "while attempting putdom\n", $userinput);
4374: }
4375:
4376: return 1;
4377: }
4378: ®ister_handler("putdom", \&put_domain_handler, 0, 1, 0);
4379:
1.517 ! raeburn 4380: # Updates one or more entries in clickers.db file at the domain level
! 4381: #
! 4382: # Parameters:
! 4383: # $cmd - The command that got us here.
! 4384: # $tail - Tail of the command (remaining parameters).
! 4385: # In this case a colon separated list containing:
! 4386: # (a) the domain for which we are updating the entries,
! 4387: # (b) the action required -- add or del -- and
! 4388: # (c) a &-separated list of entries to add or delete.
! 4389: # $client - File descriptor connected to client.
! 4390: # Returns
! 4391: # 1 - Continue processing.
! 4392: # 0 - Requested to exit, caller should shut down.
! 4393: # Side effects:
! 4394: # reply is written to $client.
! 4395: #
! 4396:
! 4397:
! 4398: sub update_clickers {
! 4399: my ($cmd, $tail, $client) = @_;
! 4400:
! 4401: my $userinput = "$cmd:$tail";
! 4402: my ($udom,$action,$what) =split(/:/,$tail,3);
! 4403: chomp($what);
! 4404:
! 4405: my $hashref = &tie_domain_hash($udom, "clickers", &GDBM_WRCREAT(),
! 4406: "U","$action:$what");
! 4407:
! 4408: if (!$hashref) {
! 4409: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
! 4410: "while attempting updateclickers\n", $userinput);
! 4411: return 1;
! 4412: }
! 4413:
! 4414: my @pairs=split(/\&/,$what);
! 4415: foreach my $pair (@pairs) {
! 4416: my ($key,$value)=split(/=/,$pair);
! 4417: if ($action eq 'add') {
! 4418: if (exists($hashref->{$key})) {
! 4419: my @newvals = split(/,/,&unescape($value));
! 4420: my @currvals = split(/,/,&unescape($hashref->{$key}));
! 4421: my @merged = sort(keys(%{{map { $_ => 1 } (@newvals,@currvals)}}));
! 4422: $hashref->{$key}=&escape(join(',',@merged));
! 4423: } else {
! 4424: $hashref->{$key}=$value;
! 4425: }
! 4426: } elsif ($action eq 'del') {
! 4427: if (exists($hashref->{$key})) {
! 4428: my %current;
! 4429: map { $current{$_} = 1; } split(/,/,&unescape($hashref->{$key}));
! 4430: map { delete($current{$_}); } split(/,/,&unescape($value));
! 4431: if (keys(%current)) {
! 4432: $hashref->{$key}=&escape(join(',',sort(keys(%current))));
! 4433: } else {
! 4434: delete($hashref->{$key});
! 4435: }
! 4436: }
! 4437: }
! 4438: }
! 4439: if (&untie_user_hash($hashref)) {
! 4440: &Reply( $client, "ok\n", $userinput);
! 4441: } else {
! 4442: &Failure($client, "error: ".($!+0)." untie(GDBM) failed ".
! 4443: "while attempting put\n",
! 4444: $userinput);
! 4445: }
! 4446: return 1;
! 4447: }
! 4448: ®ister_handler("updateclickers", \&update_clickers, 0, 1, 0);
! 4449:
! 4450:
! 4451: # Deletes one or more entries in a namespace db file at the domain level
! 4452: #
! 4453: # Parameters:
! 4454: # $cmd - The command that got us here.
! 4455: # $tail - Tail of the command (remaining parameters).
! 4456: # In this case a colon separated list containing:
! 4457: # (a) the domain for which we are deleting the entries,
! 4458: # (b) &-separated list of keys to delete.
! 4459: # $client - File descriptor connected to client.
! 4460: # Returns
! 4461: # 1 - Continue processing.
! 4462: # 0 - Requested to exit, caller should shut down.
! 4463: # Side effects:
! 4464: # reply is written to $client.
! 4465: #
! 4466:
! 4467: sub del_domain_handler {
! 4468: my ($cmd,$tail,$client) = @_;
! 4469:
! 4470: my $userinput = "$cmd:$tail";
! 4471:
! 4472: my ($udom,$namespace,$what)=split(/:/,$tail,3);
! 4473: chomp($what);
! 4474: my $hashref = &tie_domain_hash($udom,$namespace,&GDBM_WRCREAT(),
! 4475: "D", $what);
! 4476: if ($hashref) {
! 4477: my @keys=split(/\&/,$what);
! 4478: foreach my $key (@keys) {
! 4479: delete($hashref->{$key});
! 4480: }
! 4481: if (&untie_user_hash($hashref)) {
! 4482: &Reply($client, "ok\n", $userinput);
! 4483: } else {
! 4484: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
! 4485: "while attempting deldom\n", $userinput);
! 4486: }
! 4487: } else {
! 4488: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
! 4489: "while attempting deldom\n", $userinput);
! 4490: }
! 4491: return 1;
! 4492: }
! 4493: ®ister_handler("deldom", \&del_domain_handler, 0, 1, 0);
! 4494:
! 4495:
1.348 raeburn 4496: # Unencrypted get from the namespace database file at the domain level.
4497: # This function retrieves a keyed item from a specific named database in the
4498: # domain directory.
4499: #
4500: # Parameters:
4501: # $cmd - Command request keyword (get).
4502: # $tail - Tail of the command. This is a colon separated list
4503: # consisting of the domain and the 'namespace'
4504: # which selects the gdbm file to do the lookup in,
4505: # & separated list of keys to lookup. Note that
4506: # the values are returned as an & separated list too.
4507: # $client - File descriptor open on the client.
4508: # Returns:
4509: # 1 - Continue processing.
4510: # 0 - Exit.
4511: # Side effects:
4512: # reply is written to $client.
4513: #
4514:
4515: sub get_domain_handler {
4516: my ($cmd, $tail, $client) = @_;
4517:
1.461 foxr 4518:
1.348 raeburn 4519: my $userinput = "$client:$tail";
4520:
4521: my ($udom,$namespace,$what)=split(/:/,$tail,3);
4522: chomp($what);
4523: my @queries=split(/\&/,$what);
4524: my $qresult='';
4525: my $hashref = &tie_domain_hash($udom, "$namespace", &GDBM_READER());
4526: if ($hashref) {
4527: for (my $i=0;$i<=$#queries;$i++) {
4528: $qresult.="$hashref->{$queries[$i]}&";
4529: }
4530: if (&untie_domain_hash($hashref)) {
4531: $qresult=~s/\&$//;
1.387 albertel 4532: &Reply($client, \$qresult, $userinput);
1.348 raeburn 4533: } else {
4534: &Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ".
4535: "while attempting getdom\n",$userinput);
4536: }
4537: } else {
4538: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
4539: "while attempting getdom\n",$userinput);
4540: }
4541:
4542: return 1;
4543: }
1.360 raeburn 4544: ®ister_handler("getdom", \&get_domain_handler, 0, 1, 0);
1.348 raeburn 4545:
1.420 raeburn 4546: #
1.238 foxr 4547: # Puts an id to a domains id database.
4548: #
4549: # Parameters:
4550: # $cmd - The command that triggered us.
4551: # $tail - Remainder of the request other than the command. This is a
4552: # colon separated list containing:
4553: # $domain - The domain for which we are writing the id.
4554: # $pairs - The id info to write... this is and & separated list
4555: # of keyword=value.
4556: # $client - Socket open on the client.
4557: # Returns:
4558: # 1 - Continue processing.
4559: # Side effects:
4560: # reply is written to $client.
4561: #
4562: sub put_id_handler {
4563: my ($cmd,$tail,$client) = @_;
4564:
4565:
4566: my $userinput = "$cmd:$tail";
4567:
4568: my ($udom,$what)=split(/:/,$tail);
4569: chomp($what);
4570: my @pairs=split(/\&/,$what);
4571: my $hashref = &tie_domain_hash($udom, "ids", &GDBM_WRCREAT(),
4572: "P", $what);
4573: if ($hashref) {
4574: foreach my $pair (@pairs) {
4575: my ($key,$value)=split(/=/,$pair);
4576: $hashref->{$key}=$value;
4577: }
1.311 albertel 4578: if (&untie_domain_hash($hashref)) {
1.238 foxr 4579: &Reply($client, "ok\n", $userinput);
4580: } else {
4581: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4582: "while attempting idput\n", $userinput);
4583: }
4584: } else {
4585: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
4586: "while attempting idput\n", $userinput);
4587: }
4588:
4589: return 1;
4590: }
1.263 albertel 4591: ®ister_handler("idput", \&put_id_handler, 0, 1, 0);
1.238 foxr 4592:
4593: #
4594: # Retrieves a set of id values from the id database.
4595: # Returns an & separated list of results, one for each requested id to the
4596: # client.
4597: #
4598: # Parameters:
4599: # $cmd - Command keyword that caused us to be dispatched.
4600: # $tail - Tail of the command. Consists of a colon separated:
4601: # domain - the domain whose id table we dump
4602: # ids Consists of an & separated list of
4603: # id keywords whose values will be fetched.
4604: # nonexisting keywords will have an empty value.
4605: # $client - Socket open on the client.
4606: #
4607: # Returns:
4608: # 1 - indicating processing should continue.
4609: # Side effects:
4610: # An & separated list of results is written to $client.
4611: #
4612: sub get_id_handler {
4613: my ($cmd, $tail, $client) = @_;
4614:
4615:
4616: my $userinput = "$client:$tail";
4617:
4618: my ($udom,$what)=split(/:/,$tail);
4619: chomp($what);
4620: my @queries=split(/\&/,$what);
4621: my $qresult='';
4622: my $hashref = &tie_domain_hash($udom, "ids", &GDBM_READER());
4623: if ($hashref) {
4624: for (my $i=0;$i<=$#queries;$i++) {
4625: $qresult.="$hashref->{$queries[$i]}&";
4626: }
1.311 albertel 4627: if (&untie_domain_hash($hashref)) {
1.238 foxr 4628: $qresult=~s/\&$//;
1.387 albertel 4629: &Reply($client, \$qresult, $userinput);
1.238 foxr 4630: } else {
4631: &Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ".
4632: "while attempting idget\n",$userinput);
4633: }
4634: } else {
4635: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
4636: "while attempting idget\n",$userinput);
4637: }
4638:
4639: return 1;
4640: }
1.263 albertel 4641: ®ister_handler("idget", \&get_id_handler, 0, 1, 0);
1.238 foxr 4642:
1.501 raeburn 4643: # Deletes one or more ids in a domain's id database.
4644: #
4645: # Parameters:
4646: # $cmd - Command keyword (iddel).
4647: # $tail - Command tail. In this case a colon
4648: # separated list containing:
4649: # The domain for which we are deleting the id(s).
4650: # &-separated list of id(s) to delete.
4651: # $client - File open on client socket.
4652: # Returns:
4653: # 1 - Continue processing
4654: # 0 - Exit server.
4655: #
4656: #
4657:
4658: sub del_id_handler {
4659: my ($cmd,$tail,$client) = @_;
4660:
4661: my $userinput = "$cmd:$tail";
4662:
4663: my ($udom,$what)=split(/:/,$tail);
4664: chomp($what);
4665: my $hashref = &tie_domain_hash($udom, "ids", &GDBM_WRCREAT(),
4666: "D", $what);
4667: if ($hashref) {
4668: my @keys=split(/\&/,$what);
4669: foreach my $key (@keys) {
4670: delete($hashref->{$key});
4671: }
4672: if (&untie_user_hash($hashref)) {
4673: &Reply($client, "ok\n", $userinput);
4674: } else {
4675: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4676: "while attempting iddel\n", $userinput);
4677: }
4678: } else {
4679: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
4680: "while attempting iddel\n", $userinput);
4681: }
4682: return 1;
4683: }
4684: ®ister_handler("iddel", \&del_id_handler, 0, 1, 0);
4685:
1.238 foxr 4686: #
1.299 raeburn 4687: # Puts broadcast e-mail sent by Domain Coordinator in nohist_dcmail database
4688: #
4689: # Parameters
4690: # $cmd - Command keyword that caused us to be dispatched.
4691: # $tail - Tail of the command. Consists of a colon separated:
4692: # domain - the domain whose dcmail we are recording
4693: # email Consists of key=value pair
4694: # where key is unique msgid
4695: # and value is message (in XML)
4696: # $client - Socket open on the client.
4697: #
4698: # Returns:
4699: # 1 - indicating processing should continue.
4700: # Side effects
4701: # reply is written to $client.
4702: #
4703: sub put_dcmail_handler {
4704: my ($cmd,$tail,$client) = @_;
4705: my $userinput = "$cmd:$tail";
1.463 foxr 4706:
4707:
1.299 raeburn 4708: my ($udom,$what)=split(/:/,$tail);
4709: chomp($what);
4710: my $hashref = &tie_domain_hash($udom, "nohist_dcmail", &GDBM_WRCREAT());
4711: if ($hashref) {
4712: my ($key,$value)=split(/=/,$what);
4713: $hashref->{$key}=$value;
4714: }
1.311 albertel 4715: if (&untie_domain_hash($hashref)) {
1.299 raeburn 4716: &Reply($client, "ok\n", $userinput);
4717: } else {
4718: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4719: "while attempting dcmailput\n", $userinput);
4720: }
4721: return 1;
4722: }
4723: ®ister_handler("dcmailput", \&put_dcmail_handler, 0, 1, 0);
4724:
4725: #
4726: # Retrieves broadcast e-mail from nohist_dcmail database
4727: # Returns to client an & separated list of key=value pairs,
4728: # where key is msgid and value is message information.
4729: #
4730: # Parameters
4731: # $cmd - Command keyword that caused us to be dispatched.
4732: # $tail - Tail of the command. Consists of a colon separated:
4733: # domain - the domain whose dcmail table we dump
4734: # startfilter - beginning of time window
4735: # endfilter - end of time window
4736: # sendersfilter - & separated list of username:domain
4737: # for senders to search for.
4738: # $client - Socket open on the client.
4739: #
4740: # Returns:
4741: # 1 - indicating processing should continue.
4742: # Side effects
4743: # reply (& separated list of msgid=messageinfo pairs) is
4744: # written to $client.
4745: #
4746: sub dump_dcmail_handler {
4747: my ($cmd, $tail, $client) = @_;
4748:
4749: my $userinput = "$cmd:$tail";
4750: my ($udom,$startfilter,$endfilter,$sendersfilter) = split(/:/,$tail);
4751: chomp($sendersfilter);
4752: my @senders = ();
4753: if (defined($startfilter)) {
4754: $startfilter=&unescape($startfilter);
4755: } else {
4756: $startfilter='.';
4757: }
4758: if (defined($endfilter)) {
4759: $endfilter=&unescape($endfilter);
4760: } else {
4761: $endfilter='.';
4762: }
4763: if (defined($sendersfilter)) {
4764: $sendersfilter=&unescape($sendersfilter);
1.300 albertel 4765: @senders = map { &unescape($_) } split(/\&/,$sendersfilter);
1.299 raeburn 4766: }
4767:
4768: my $qresult='';
4769: my $hashref = &tie_domain_hash($udom, "nohist_dcmail", &GDBM_WRCREAT());
4770: if ($hashref) {
4771: while (my ($key,$value) = each(%$hashref)) {
4772: my $match = 1;
1.303 albertel 4773: my ($timestamp,$subj,$uname,$udom) =
4774: split(/:/,&unescape(&unescape($key)),5); # yes, twice really
1.299 raeburn 4775: $subj = &unescape($subj);
4776: unless ($startfilter eq '.' || !defined($startfilter)) {
4777: if ($timestamp < $startfilter) {
4778: $match = 0;
4779: }
4780: }
4781: unless ($endfilter eq '.' || !defined($endfilter)) {
4782: if ($timestamp > $endfilter) {
4783: $match = 0;
4784: }
4785: }
4786: unless (@senders < 1) {
4787: unless (grep/^$uname:$udom$/,@senders) {
4788: $match = 0;
4789: }
4790: }
4791: if ($match == 1) {
4792: $qresult.=$key.'='.$value.'&';
4793: }
4794: }
1.311 albertel 4795: if (&untie_domain_hash($hashref)) {
1.299 raeburn 4796: chop($qresult);
1.387 albertel 4797: &Reply($client, \$qresult, $userinput);
1.299 raeburn 4798: } else {
4799: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4800: "while attempting dcmaildump\n", $userinput);
4801: }
4802: } else {
4803: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
4804: "while attempting dcmaildump\n", $userinput);
4805: }
4806: return 1;
4807: }
4808:
4809: ®ister_handler("dcmaildump", \&dump_dcmail_handler, 0, 1, 0);
4810:
4811: #
4812: # Puts domain roles in nohist_domainroles database
4813: #
4814: # Parameters
4815: # $cmd - Command keyword that caused us to be dispatched.
4816: # $tail - Tail of the command. Consists of a colon separated:
4817: # domain - the domain whose roles we are recording
4818: # role - Consists of key=value pair
4819: # where key is unique role
4820: # and value is start/end date information
4821: # $client - Socket open on the client.
4822: #
4823: # Returns:
4824: # 1 - indicating processing should continue.
4825: # Side effects
4826: # reply is written to $client.
4827: #
4828:
4829: sub put_domainroles_handler {
4830: my ($cmd,$tail,$client) = @_;
4831:
4832: my $userinput = "$cmd:$tail";
4833: my ($udom,$what)=split(/:/,$tail);
4834: chomp($what);
4835: my @pairs=split(/\&/,$what);
4836: my $hashref = &tie_domain_hash($udom, "nohist_domainroles", &GDBM_WRCREAT());
4837: if ($hashref) {
4838: foreach my $pair (@pairs) {
4839: my ($key,$value)=split(/=/,$pair);
4840: $hashref->{$key}=$value;
4841: }
1.311 albertel 4842: if (&untie_domain_hash($hashref)) {
1.299 raeburn 4843: &Reply($client, "ok\n", $userinput);
4844: } else {
4845: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4846: "while attempting domroleput\n", $userinput);
4847: }
4848: } else {
4849: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
4850: "while attempting domroleput\n", $userinput);
4851: }
4852:
4853: return 1;
4854: }
4855:
4856: ®ister_handler("domroleput", \&put_domainroles_handler, 0, 1, 0);
4857:
4858: #
4859: # Retrieves domain roles from nohist_domainroles database
4860: # Returns to client an & separated list of key=value pairs,
4861: # where key is role and value is start and end date information.
4862: #
4863: # Parameters
4864: # $cmd - Command keyword that caused us to be dispatched.
4865: # $tail - Tail of the command. Consists of a colon separated:
4866: # domain - the domain whose domain roles table we dump
4867: # $client - Socket open on the client.
4868: #
4869: # Returns:
4870: # 1 - indicating processing should continue.
4871: # Side effects
4872: # reply (& separated list of role=start/end info pairs) is
4873: # written to $client.
4874: #
4875: sub dump_domainroles_handler {
4876: my ($cmd, $tail, $client) = @_;
4877:
4878: my $userinput = "$cmd:$tail";
4879: my ($udom,$startfilter,$endfilter,$rolesfilter) = split(/:/,$tail);
4880: chomp($rolesfilter);
4881: my @roles = ();
4882: if (defined($startfilter)) {
4883: $startfilter=&unescape($startfilter);
4884: } else {
4885: $startfilter='.';
4886: }
4887: if (defined($endfilter)) {
4888: $endfilter=&unescape($endfilter);
4889: } else {
4890: $endfilter='.';
4891: }
4892: if (defined($rolesfilter)) {
4893: $rolesfilter=&unescape($rolesfilter);
1.300 albertel 4894: @roles = split(/\&/,$rolesfilter);
1.299 raeburn 4895: }
1.421 raeburn 4896:
1.299 raeburn 4897: my $hashref = &tie_domain_hash($udom, "nohist_domainroles", &GDBM_WRCREAT());
4898: if ($hashref) {
4899: my $qresult = '';
4900: while (my ($key,$value) = each(%$hashref)) {
4901: my $match = 1;
1.421 raeburn 4902: my ($end,$start) = split(/:/,&unescape($value));
1.299 raeburn 4903: my ($trole,$uname,$udom,$runame,$rudom,$rsec) = split(/:/,&unescape($key));
1.421 raeburn 4904: unless (@roles < 1) {
4905: unless (grep/^\Q$trole\E$/,@roles) {
4906: $match = 0;
4907: next;
4908: }
4909: }
1.299 raeburn 4910: unless ($startfilter eq '.' || !defined($startfilter)) {
1.415 raeburn 4911: if ((defined($start)) && ($start >= $startfilter)) {
1.299 raeburn 4912: $match = 0;
1.421 raeburn 4913: next;
1.299 raeburn 4914: }
4915: }
4916: unless ($endfilter eq '.' || !defined($endfilter)) {
1.421 raeburn 4917: if ((defined($end)) && (($end > 0) && ($end <= $endfilter))) {
1.299 raeburn 4918: $match = 0;
1.421 raeburn 4919: next;
1.299 raeburn 4920: }
4921: }
4922: if ($match == 1) {
4923: $qresult.=$key.'='.$value.'&';
4924: }
4925: }
1.311 albertel 4926: if (&untie_domain_hash($hashref)) {
1.299 raeburn 4927: chop($qresult);
1.387 albertel 4928: &Reply($client, \$qresult, $userinput);
1.299 raeburn 4929: } else {
4930: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4931: "while attempting domrolesdump\n", $userinput);
4932: }
4933: } else {
4934: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
4935: "while attempting domrolesdump\n", $userinput);
4936: }
4937: return 1;
4938: }
4939:
4940: ®ister_handler("domrolesdump", \&dump_domainroles_handler, 0, 1, 0);
4941:
4942:
1.238 foxr 4943: # Process the tmpput command I'm not sure what this does.. Seems to
4944: # create a file in the lonDaemons/tmp directory of the form $id.tmp
4945: # where Id is the client's ip concatenated with a sequence number.
4946: # The file will contain some value that is passed in. Is this e.g.
4947: # a login token?
4948: #
4949: # Parameters:
4950: # $cmd - The command that got us dispatched.
4951: # $tail - The remainder of the request following $cmd:
4952: # In this case this will be the contents of the file.
4953: # $client - Socket connected to the client.
4954: # Returns:
4955: # 1 indicating processing can continue.
4956: # Side effects:
4957: # A file is created in the local filesystem.
4958: # A reply is sent to the client.
4959: sub tmp_put_handler {
4960: my ($cmd, $what, $client) = @_;
4961:
4962: my $userinput = "$cmd:$what"; # Reconstruct for logging.
4963:
1.347 raeburn 4964: my ($record,$context) = split(/:/,$what);
4965: if ($context ne '') {
4966: chomp($context);
4967: $context = &unescape($context);
4968: }
4969: my ($id,$store);
1.238 foxr 4970: $tmpsnum++;
1.454 raeburn 4971: if (($context eq 'resetpw') || ($context eq 'createaccount')) {
1.347 raeburn 4972: $id = &md5_hex(&md5_hex(time.{}.rand().$$));
4973: } else {
4974: $id = $$.'_'.$clientip.'_'.$tmpsnum;
4975: }
1.238 foxr 4976: $id=~s/\W/\_/g;
1.347 raeburn 4977: $record=~s/\n//g;
1.238 foxr 4978: my $execdir=$perlvar{'lonDaemons'};
4979: if ($store=IO::File->new(">$execdir/tmp/$id.tmp")) {
1.347 raeburn 4980: print $store $record;
1.238 foxr 4981: close $store;
1.387 albertel 4982: &Reply($client, \$id, $userinput);
1.238 foxr 4983: } else {
4984: &Failure( $client, "error: ".($!+0)."IO::File->new Failed ".
4985: "while attempting tmpput\n", $userinput);
4986: }
4987: return 1;
4988:
4989: }
4990: ®ister_handler("tmpput", \&tmp_put_handler, 0, 1, 0);
1.263 albertel 4991:
1.238 foxr 4992: # Processes the tmpget command. This command returns the contents
4993: # of a temporary resource file(?) created via tmpput.
4994: #
4995: # Paramters:
4996: # $cmd - Command that got us dispatched.
4997: # $id - Tail of the command, contain the id of the resource
4998: # we want to fetch.
4999: # $client - socket open on the client.
5000: # Return:
5001: # 1 - Inidcating processing can continue.
5002: # Side effects:
5003: # A reply is sent to the client.
5004: #
5005: sub tmp_get_handler {
5006: my ($cmd, $id, $client) = @_;
5007:
5008: my $userinput = "$cmd:$id";
5009:
5010:
5011: $id=~s/\W/\_/g;
5012: my $store;
5013: my $execdir=$perlvar{'lonDaemons'};
5014: if ($store=IO::File->new("$execdir/tmp/$id.tmp")) {
5015: my $reply=<$store>;
1.387 albertel 5016: &Reply( $client, \$reply, $userinput);
1.238 foxr 5017: close $store;
5018: } else {
5019: &Failure( $client, "error: ".($!+0)."IO::File->new Failed ".
5020: "while attempting tmpget\n", $userinput);
5021: }
5022:
5023: return 1;
5024: }
5025: ®ister_handler("tmpget", \&tmp_get_handler, 0, 1, 0);
1.263 albertel 5026:
1.238 foxr 5027: #
5028: # Process the tmpdel command. This command deletes a temp resource
5029: # created by the tmpput command.
5030: #
5031: # Parameters:
5032: # $cmd - Command that got us here.
5033: # $id - Id of the temporary resource created.
5034: # $client - socket open on the client process.
5035: #
5036: # Returns:
5037: # 1 - Indicating processing should continue.
5038: # Side Effects:
5039: # A file is deleted
5040: # A reply is sent to the client.
5041: sub tmp_del_handler {
5042: my ($cmd, $id, $client) = @_;
5043:
5044: my $userinput= "$cmd:$id";
5045:
5046: chomp($id);
5047: $id=~s/\W/\_/g;
5048: my $execdir=$perlvar{'lonDaemons'};
5049: if (unlink("$execdir/tmp/$id.tmp")) {
5050: &Reply($client, "ok\n", $userinput);
5051: } else {
5052: &Failure( $client, "error: ".($!+0)."Unlink tmp Failed ".
5053: "while attempting tmpdel\n", $userinput);
5054: }
5055:
5056: return 1;
5057:
5058: }
5059: ®ister_handler("tmpdel", \&tmp_del_handler, 0, 1, 0);
1.263 albertel 5060:
1.238 foxr 5061: #
1.246 foxr 5062: # Processes the setannounce command. This command
5063: # creates a file named announce.txt in the top directory of
5064: # the documentn root and sets its contents. The announce.txt file is
5065: # printed in its entirety at the LonCAPA login page. Note:
5066: # once the announcement.txt fileis created it cannot be deleted.
5067: # However, setting the contents of the file to empty removes the
5068: # announcement from the login page of loncapa so who cares.
5069: #
5070: # Parameters:
5071: # $cmd - The command that got us dispatched.
5072: # $announcement - The text of the announcement.
5073: # $client - Socket open on the client process.
5074: # Retunrns:
5075: # 1 - Indicating request processing should continue
5076: # Side Effects:
5077: # The file {DocRoot}/announcement.txt is created.
5078: # A reply is sent to $client.
5079: #
5080: sub set_announce_handler {
5081: my ($cmd, $announcement, $client) = @_;
5082:
5083: my $userinput = "$cmd:$announcement";
5084:
5085: chomp($announcement);
5086: $announcement=&unescape($announcement);
5087: if (my $store=IO::File->new('>'.$perlvar{'lonDocRoot'}.
5088: '/announcement.txt')) {
5089: print $store $announcement;
5090: close $store;
5091: &Reply($client, "ok\n", $userinput);
5092: } else {
5093: &Failure($client, "error: ".($!+0)."\n", $userinput);
5094: }
5095:
5096: return 1;
5097: }
5098: ®ister_handler("setannounce", \&set_announce_handler, 0, 1, 0);
1.263 albertel 5099:
1.246 foxr 5100: #
5101: # Return the version of the daemon. This can be used to determine
5102: # the compatibility of cross version installations or, alternatively to
5103: # simply know who's out of date and who isn't. Note that the version
5104: # is returned concatenated with the tail.
5105: # Parameters:
5106: # $cmd - the request that dispatched to us.
5107: # $tail - Tail of the request (client's version?).
5108: # $client - Socket open on the client.
5109: #Returns:
5110: # 1 - continue processing requests.
5111: # Side Effects:
5112: # Replies with version to $client.
5113: sub get_version_handler {
5114: my ($cmd, $tail, $client) = @_;
5115:
5116: my $userinput = $cmd.$tail;
5117:
5118: &Reply($client, &version($userinput)."\n", $userinput);
5119:
5120:
5121: return 1;
5122: }
5123: ®ister_handler("version", \&get_version_handler, 0, 1, 0);
1.263 albertel 5124:
1.246 foxr 5125: # Set the current host and domain. This is used to support
5126: # multihomed systems. Each IP of the system, or even separate daemons
5127: # on the same IP can be treated as handling a separate lonCAPA virtual
5128: # machine. This command selects the virtual lonCAPA. The client always
5129: # knows the right one since it is lonc and it is selecting the domain/system
5130: # from the hosts.tab file.
5131: # Parameters:
5132: # $cmd - Command that dispatched us.
5133: # $tail - Tail of the command (domain/host requested).
5134: # $socket - Socket open on the client.
5135: #
5136: # Returns:
5137: # 1 - Indicates the program should continue to process requests.
5138: # Side-effects:
5139: # The default domain/system context is modified for this daemon.
5140: # a reply is sent to the client.
5141: #
5142: sub set_virtual_host_handler {
5143: my ($cmd, $tail, $socket) = @_;
5144:
5145: my $userinput ="$cmd:$tail";
5146:
5147: &Reply($client, &sethost($userinput)."\n", $userinput);
5148:
5149:
5150: return 1;
5151: }
1.247 albertel 5152: ®ister_handler("sethost", \&set_virtual_host_handler, 0, 1, 0);
1.246 foxr 5153:
5154: # Process a request to exit:
5155: # - "bye" is sent to the client.
5156: # - The client socket is shutdown and closed.
5157: # - We indicate to the caller that we should exit.
5158: # Formal Parameters:
5159: # $cmd - The command that got us here.
5160: # $tail - Tail of the command (empty).
5161: # $client - Socket open on the tail.
5162: # Returns:
5163: # 0 - Indicating the program should exit!!
5164: #
5165: sub exit_handler {
5166: my ($cmd, $tail, $client) = @_;
5167:
5168: my $userinput = "$cmd:$tail";
5169:
5170: &logthis("Client $clientip ($clientname) hanging up: $userinput");
5171: &Reply($client, "bye\n", $userinput);
5172: $client->shutdown(2); # shutdown the socket forcibly.
5173: $client->close();
5174:
5175: return 0;
5176: }
1.248 foxr 5177: ®ister_handler("exit", \&exit_handler, 0,1,1);
5178: ®ister_handler("init", \&exit_handler, 0,1,1);
5179: ®ister_handler("quit", \&exit_handler, 0,1,1);
5180:
5181: # Determine if auto-enrollment is enabled.
5182: # Note that the original had what I believe to be a defect.
5183: # The original returned 0 if the requestor was not a registerd client.
5184: # It should return "refused".
5185: # Formal Parameters:
5186: # $cmd - The command that invoked us.
5187: # $tail - The tail of the command (Extra command parameters.
5188: # $client - The socket open on the client that issued the request.
5189: # Returns:
5190: # 1 - Indicating processing should continue.
5191: #
5192: sub enrollment_enabled_handler {
5193: my ($cmd, $tail, $client) = @_;
5194: my $userinput = $cmd.":".$tail; # For logging purposes.
5195:
5196:
1.337 albertel 5197: my ($cdom) = split(/:/, $tail, 2); # Domain we're asking about.
5198:
1.248 foxr 5199: my $outcome = &localenroll::run($cdom);
1.387 albertel 5200: &Reply($client, \$outcome, $userinput);
1.248 foxr 5201:
5202: return 1;
5203: }
5204: ®ister_handler("autorun", \&enrollment_enabled_handler, 0, 1, 0);
5205:
1.417 raeburn 5206: #
1.423 raeburn 5207: # Validate an institutional code used for a LON-CAPA course.
1.417 raeburn 5208: #
5209: # Formal Parameters:
5210: # $cmd - The command request that got us dispatched.
5211: # $tail - The tail of the command. In this case,
5212: # this is a colon separated set of words that will be split
5213: # into:
1.424 raeburn 5214: # $dom - The domain for which the check of
5215: # institutional course code will occur.
5216: #
5217: # $instcode - The institutional code for the course
5218: # being requested, or validated for rights
5219: # to request.
5220: #
5221: # $owner - The course requestor (who will be the
5222: # course owner, in the form username:domain
5223: #
1.417 raeburn 5224: # $client - Socket open on the client.
5225: # Returns:
5226: # 1 - Indicating processing should continue.
5227: #
5228: sub validate_instcode_handler {
5229: my ($cmd, $tail, $client) = @_;
5230: my $userinput = "$cmd:$tail";
1.423 raeburn 5231: my ($dom,$instcode,$owner) = split(/:/, $tail);
1.422 raeburn 5232: $instcode = &unescape($instcode);
5233: $owner = &unescape($owner);
1.498 raeburn 5234: my ($outcome,$description,$credits) =
1.426 raeburn 5235: &localenroll::validate_instcode($dom,$instcode,$owner);
1.498 raeburn 5236: my $result = &escape($outcome).'&'.&escape($description).'&'.
5237: &escape($credits);
1.426 raeburn 5238: &Reply($client, \$result, $userinput);
1.417 raeburn 5239:
5240: return 1;
5241: }
5242: ®ister_handler("autovalidateinstcode", \&validate_instcode_handler, 0, 1, 0);
5243:
1.248 foxr 5244: # Get the official sections for which auto-enrollment is possible.
5245: # Since the admin people won't know about 'unofficial sections'
5246: # we cannot auto-enroll on them.
5247: # Formal Parameters:
5248: # $cmd - The command request that got us dispatched here.
5249: # $tail - The remainder of the request. In our case this
5250: # will be split into:
5251: # $coursecode - The course name from the admin point of view.
5252: # $cdom - The course's domain(?).
5253: # $client - Socket open on the client.
5254: # Returns:
5255: # 1 - Indiciting processing should continue.
5256: #
5257: sub get_sections_handler {
5258: my ($cmd, $tail, $client) = @_;
5259: my $userinput = "$cmd:$tail";
5260:
5261: my ($coursecode, $cdom) = split(/:/, $tail);
5262: my @secs = &localenroll::get_sections($coursecode,$cdom);
5263: my $seclist = &escape(join(':',@secs));
5264:
1.387 albertel 5265: &Reply($client, \$seclist, $userinput);
1.248 foxr 5266:
5267:
5268: return 1;
5269: }
5270: ®ister_handler("autogetsections", \&get_sections_handler, 0, 1, 0);
5271:
5272: # Validate the owner of a new course section.
5273: #
5274: # Formal Parameters:
5275: # $cmd - Command that got us dispatched.
5276: # $tail - the remainder of the command. For us this consists of a
5277: # colon separated string containing:
5278: # $inst - Course Id from the institutions point of view.
5279: # $owner - Proposed owner of the course.
5280: # $cdom - Domain of the course (from the institutions
5281: # point of view?)..
5282: # $client - Socket open on the client.
5283: #
5284: # Returns:
5285: # 1 - Processing should continue.
5286: #
5287: sub validate_course_owner_handler {
5288: my ($cmd, $tail, $client) = @_;
5289: my $userinput = "$cmd:$tail";
1.470 raeburn 5290: my ($inst_course_id, $owner, $cdom, $coowners) = split(/:/, $tail);
5291:
1.336 raeburn 5292: $owner = &unescape($owner);
1.470 raeburn 5293: $coowners = &unescape($coowners);
5294: my $outcome = &localenroll::new_course($inst_course_id,$owner,$cdom,$coowners);
1.387 albertel 5295: &Reply($client, \$outcome, $userinput);
1.248 foxr 5296:
5297:
5298:
5299: return 1;
5300: }
5301: ®ister_handler("autonewcourse", \&validate_course_owner_handler, 0, 1, 0);
1.263 albertel 5302:
1.248 foxr 5303: #
5304: # Validate a course section in the official schedule of classes
5305: # from the institutions point of view (part of autoenrollment).
5306: #
5307: # Formal Parameters:
5308: # $cmd - The command request that got us dispatched.
5309: # $tail - The tail of the command. In this case,
5310: # this is a colon separated set of words that will be split
5311: # into:
5312: # $inst_course_id - The course/section id from the
5313: # institutions point of view.
5314: # $cdom - The domain from the institutions
5315: # point of view.
5316: # $client - Socket open on the client.
5317: # Returns:
5318: # 1 - Indicating processing should continue.
5319: #
5320: sub validate_course_section_handler {
5321: my ($cmd, $tail, $client) = @_;
5322: my $userinput = "$cmd:$tail";
5323: my ($inst_course_id, $cdom) = split(/:/, $tail);
5324:
5325: my $outcome=&localenroll::validate_courseID($inst_course_id,$cdom);
1.387 albertel 5326: &Reply($client, \$outcome, $userinput);
1.248 foxr 5327:
5328:
5329: return 1;
5330: }
5331: ®ister_handler("autovalidatecourse", \&validate_course_section_handler, 0, 1, 0);
5332:
5333: #
1.340 raeburn 5334: # Validate course owner's access to enrollment data for specific class section.
5335: #
5336: #
5337: # Formal Parameters:
5338: # $cmd - The command request that got us dispatched.
5339: # $tail - The tail of the command. In this case this is a colon separated
5340: # set of words that will be split into:
5341: # $inst_class - Institutional code for the specific class section
5342: # $courseowner - The escaped username:domain of the course owner
5343: # $cdom - The domain of the course from the institution's
5344: # point of view.
5345: # $client - The socket open on the client.
5346: # Returns:
5347: # 1 - continue processing.
5348: #
5349:
5350: sub validate_class_access_handler {
5351: my ($cmd, $tail, $client) = @_;
5352: my $userinput = "$cmd:$tail";
1.383 raeburn 5353: my ($inst_class,$ownerlist,$cdom) = split(/:/, $tail);
1.392 raeburn 5354: my $owners = &unescape($ownerlist);
1.341 albertel 5355: my $outcome;
5356: eval {
5357: local($SIG{__DIE__})='DEFAULT';
1.392 raeburn 5358: $outcome=&localenroll::check_section($inst_class,$owners,$cdom);
1.341 albertel 5359: };
1.387 albertel 5360: &Reply($client,\$outcome, $userinput);
1.340 raeburn 5361:
5362: return 1;
5363: }
5364: ®ister_handler("autovalidateclass_sec", \&validate_class_access_handler, 0, 1, 0);
5365:
5366: #
5367: # Create a password for a new LON-CAPA user added by auto-enrollment.
5368: # Only used for case where authentication method for new user is localauth
1.248 foxr 5369: #
5370: # Formal Parameters:
5371: # $cmd - The command request that got us dispatched.
5372: # $tail - The tail of the command. In this case this is a colon separated
5373: # set of words that will be split into:
1.340 raeburn 5374: # $authparam - An authentication parameter (localauth parameter).
1.248 foxr 5375: # $cdom - The domain of the course from the institution's
5376: # point of view.
5377: # $client - The socket open on the client.
5378: # Returns:
5379: # 1 - continue processing.
5380: #
5381: sub create_auto_enroll_password_handler {
5382: my ($cmd, $tail, $client) = @_;
5383: my $userinput = "$cmd:$tail";
5384:
5385: my ($authparam, $cdom) = split(/:/, $userinput);
5386:
5387: my ($create_passwd,$authchk);
5388: ($authparam,
5389: $create_passwd,
5390: $authchk) = &localenroll::create_password($authparam,$cdom);
5391:
5392: &Reply($client, &escape($authparam.':'.$create_passwd.':'.$authchk)."\n",
5393: $userinput);
5394:
5395:
5396: return 1;
5397: }
5398: ®ister_handler("autocreatepassword", \&create_auto_enroll_password_handler,
5399: 0, 1, 0);
5400:
5401: # Retrieve and remove temporary files created by/during autoenrollment.
5402: #
5403: # Formal Parameters:
5404: # $cmd - The command that got us dispatched.
5405: # $tail - The tail of the command. In our case this is a colon
5406: # separated list that will be split into:
5407: # $filename - The name of the file to remove.
5408: # The filename is given as a path relative to
5409: # the LonCAPA temp file directory.
5410: # $client - Socket open on the client.
5411: #
5412: # Returns:
5413: # 1 - Continue processing.
5414: sub retrieve_auto_file_handler {
5415: my ($cmd, $tail, $client) = @_;
5416: my $userinput = "cmd:$tail";
5417:
5418: my ($filename) = split(/:/, $tail);
5419:
5420: my $source = $perlvar{'lonDaemons'}.'/tmp/'.$filename;
5421: if ( (-e $source) && ($filename ne '') ) {
5422: my $reply = '';
5423: if (open(my $fh,$source)) {
5424: while (<$fh>) {
5425: chomp($_);
5426: $_ =~ s/^\s+//g;
5427: $_ =~ s/\s+$//g;
5428: $reply .= $_;
5429: }
5430: close($fh);
5431: &Reply($client, &escape($reply)."\n", $userinput);
5432:
5433: # Does this have to be uncommented??!? (RF).
5434: #
5435: # unlink($source);
5436: } else {
5437: &Failure($client, "error\n", $userinput);
5438: }
5439: } else {
5440: &Failure($client, "error\n", $userinput);
5441: }
5442:
5443:
5444: return 1;
5445: }
5446: ®ister_handler("autoretrieve", \&retrieve_auto_file_handler, 0,1,0);
5447:
1.423 raeburn 5448: sub crsreq_checks_handler {
5449: my ($cmd, $tail, $client) = @_;
5450: my $userinput = "$cmd:$tail";
5451: my $dom = $tail;
5452: my $result;
1.507 raeburn 5453: my @reqtypes = ('official','unofficial','community','textbook');
1.423 raeburn 5454: eval {
5455: local($SIG{__DIE__})='DEFAULT';
5456: my %validations;
1.424 raeburn 5457: my $response = &localenroll::crsreq_checks($dom,\@reqtypes,
5458: \%validations);
1.423 raeburn 5459: if ($response eq 'ok') {
5460: foreach my $key (keys(%validations)) {
5461: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($validations{$key}).'&';
5462: }
5463: $result =~ s/\&$//;
5464: } else {
5465: $result = 'error';
5466: }
5467: };
5468: if (!$@) {
5469: &Reply($client, \$result, $userinput);
5470: } else {
5471: &Failure($client,"unknown_cmd\n",$userinput);
5472: }
5473: return 1;
5474: }
5475: ®ister_handler("autocrsreqchecks", \&crsreq_checks_handler, 0, 1, 0);
5476:
5477: sub validate_crsreq_handler {
5478: my ($cmd, $tail, $client) = @_;
5479: my $userinput = "$cmd:$tail";
1.508 raeburn 5480: my ($dom,$owner,$crstype,$inststatuslist,$instcode,$instseclist,$customdata) = split(/:/, $tail);
1.423 raeburn 5481: $instcode = &unescape($instcode);
5482: $owner = &unescape($owner);
5483: $crstype = &unescape($crstype);
5484: $inststatuslist = &unescape($inststatuslist);
5485: $instcode = &unescape($instcode);
5486: $instseclist = &unescape($instseclist);
1.508 raeburn 5487: my $custominfo = &Apache::lonnet::thaw_unescape($customdata);
1.423 raeburn 5488: my $outcome;
5489: eval {
5490: local($SIG{__DIE__})='DEFAULT';
5491: $outcome = &localenroll::validate_crsreq($dom,$owner,$crstype,
5492: $inststatuslist,$instcode,
1.508 raeburn 5493: $instseclist,$custominfo);
1.423 raeburn 5494: };
5495: if (!$@) {
5496: &Reply($client, \$outcome, $userinput);
5497: } else {
5498: &Failure($client,"unknown_cmd\n",$userinput);
5499: }
5500: return 1;
5501: }
5502: ®ister_handler("autocrsreqvalidation", \&validate_crsreq_handler, 0, 1, 0);
5503:
1.506 raeburn 5504: sub crsreq_update_handler {
5505: my ($cmd, $tail, $client) = @_;
5506: my $userinput = "$cmd:$tail";
1.509 raeburn 5507: my ($cdom,$cnum,$crstype,$action,$ownername,$ownerdomain,$fullname,$title,$code,
5508: $accessstart,$accessend,$infohashref) =
1.506 raeburn 5509: split(/:/, $tail);
5510: $crstype = &unescape($crstype);
5511: $action = &unescape($action);
5512: $ownername = &unescape($ownername);
5513: $ownerdomain = &unescape($ownerdomain);
5514: $fullname = &unescape($fullname);
5515: $title = &unescape($title);
5516: $code = &unescape($code);
1.509 raeburn 5517: $accessstart = &unescape($accessstart);
5518: $accessend = &unescape($accessend);
1.506 raeburn 5519: my $incoming = &Apache::lonnet::thaw_unescape($infohashref);
5520: my ($result,$outcome);
5521: eval {
5522: local($SIG{__DIE__})='DEFAULT';
5523: my %rtnhash;
5524: $outcome = &localenroll::crsreq_updates($cdom,$cnum,$crstype,$action,
5525: $ownername,$ownerdomain,$fullname,
1.509 raeburn 5526: $title,$code,$accessstart,$accessend,
5527: $incoming,\%rtnhash);
1.506 raeburn 5528: if ($outcome eq 'ok') {
1.515 raeburn 5529: my @posskeys = qw(createdweb createdmsg createdcustomized createdactions queuedweb queuedmsg formitems reviewweb validationjs onload javascript);
1.506 raeburn 5530: foreach my $key (keys(%rtnhash)) {
5531: if (grep(/^\Q$key\E/,@posskeys)) {
5532: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($rtnhash{$key}).'&';
5533: }
5534: }
5535: $result =~ s/\&$//;
5536: }
5537: };
5538: if (!$@) {
5539: if ($outcome eq 'ok') {
5540: &Reply($client, \$result, $userinput);
5541: } else {
5542: &Reply($client, "format_error\n", $userinput);
5543: }
5544: } else {
5545: &Failure($client,"unknown_cmd\n",$userinput);
5546: }
5547: return 1;
5548: }
5549: ®ister_handler("autocrsrequpdate", \&crsreq_update_handler, 0, 1, 0);
5550:
1.248 foxr 5551: #
5552: # Read and retrieve institutional code format (for support form).
5553: # Formal Parameters:
5554: # $cmd - Command that dispatched us.
5555: # $tail - Tail of the command. In this case it conatins
5556: # the course domain and the coursename.
5557: # $client - Socket open on the client.
5558: # Returns:
5559: # 1 - Continue processing.
5560: #
5561: sub get_institutional_code_format_handler {
5562: my ($cmd, $tail, $client) = @_;
5563: my $userinput = "$cmd:$tail";
5564:
5565: my $reply;
5566: my($cdom,$course) = split(/:/,$tail);
5567: my @pairs = split/\&/,$course;
5568: my %instcodes = ();
5569: my %codes = ();
5570: my @codetitles = ();
5571: my %cat_titles = ();
5572: my %cat_order = ();
5573: foreach (@pairs) {
5574: my ($key,$value) = split/=/,$_;
5575: $instcodes{&unescape($key)} = &unescape($value);
5576: }
5577: my $formatreply = &localenroll::instcode_format($cdom,
5578: \%instcodes,
5579: \%codes,
5580: \@codetitles,
5581: \%cat_titles,
5582: \%cat_order);
5583: if ($formatreply eq 'ok') {
1.365 albertel 5584: my $codes_str = &Apache::lonnet::hash2str(%codes);
5585: my $codetitles_str = &Apache::lonnet::array2str(@codetitles);
5586: my $cat_titles_str = &Apache::lonnet::hash2str(%cat_titles);
5587: my $cat_order_str = &Apache::lonnet::hash2str(%cat_order);
1.248 foxr 5588: &Reply($client,
5589: $codes_str.':'.$codetitles_str.':'.$cat_titles_str.':'
5590: .$cat_order_str."\n",
5591: $userinput);
5592: } else {
5593: # this else branch added by RF since if not ok, lonc will
5594: # hang waiting on reply until timeout.
5595: #
5596: &Reply($client, "format_error\n", $userinput);
5597: }
5598:
5599: return 1;
5600: }
1.265 albertel 5601: ®ister_handler("autoinstcodeformat",
5602: \&get_institutional_code_format_handler,0,1,0);
1.246 foxr 5603:
1.345 raeburn 5604: sub get_institutional_defaults_handler {
5605: my ($cmd, $tail, $client) = @_;
5606: my $userinput = "$cmd:$tail";
5607:
5608: my $dom = $tail;
5609: my %defaults_hash;
5610: my @code_order;
5611: my $outcome;
5612: eval {
5613: local($SIG{__DIE__})='DEFAULT';
5614: $outcome = &localenroll::instcode_defaults($dom,\%defaults_hash,
5615: \@code_order);
5616: };
5617: if (!$@) {
5618: if ($outcome eq 'ok') {
5619: my $result='';
5620: while (my ($key,$value) = each(%defaults_hash)) {
5621: $result.=&escape($key).'='.&escape($value).'&';
5622: }
5623: $result .= 'code_order='.&escape(join('&',@code_order));
1.387 albertel 5624: &Reply($client,\$result,$userinput);
1.345 raeburn 5625: } else {
5626: &Reply($client,"error\n", $userinput);
5627: }
5628: } else {
5629: &Failure($client,"unknown_cmd\n",$userinput);
5630: }
5631: }
5632: ®ister_handler("autoinstcodedefaults",
5633: \&get_institutional_defaults_handler,0,1,0);
5634:
1.416 raeburn 5635: sub get_possible_instcodes_handler {
5636: my ($cmd, $tail, $client) = @_;
5637: my $userinput = "$cmd:$tail";
5638:
5639: my $reply;
5640: my $cdom = $tail;
1.417 raeburn 5641: my (@codetitles,%cat_titles,%cat_order,@code_order);
1.416 raeburn 5642: my $formatreply = &localenroll::possible_instcodes($cdom,
5643: \@codetitles,
5644: \%cat_titles,
1.417 raeburn 5645: \%cat_order,
5646: \@code_order);
1.416 raeburn 5647: if ($formatreply eq 'ok') {
5648: my $result = join('&',map {&escape($_);} (@codetitles)).':';
1.417 raeburn 5649: $result .= join('&',map {&escape($_);} (@code_order)).':';
1.416 raeburn 5650: foreach my $key (keys(%cat_titles)) {
5651: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($cat_titles{$key}).'&';
5652: }
5653: $result =~ s/\&$//;
5654: $result .= ':';
5655: foreach my $key (keys(%cat_order)) {
5656: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($cat_order{$key}).'&';
5657: }
5658: $result =~ s/\&$//;
5659: &Reply($client,\$result,$userinput);
5660: } else {
5661: &Reply($client, "format_error\n", $userinput);
5662: }
5663: return 1;
5664: }
5665: ®ister_handler("autopossibleinstcodes",
5666: \&get_possible_instcodes_handler,0,1,0);
5667:
1.381 raeburn 5668: sub get_institutional_user_rules {
5669: my ($cmd, $tail, $client) = @_;
5670: my $userinput = "$cmd:$tail";
5671: my $dom = &unescape($tail);
5672: my (%rules_hash,@rules_order);
5673: my $outcome;
5674: eval {
5675: local($SIG{__DIE__})='DEFAULT';
5676: $outcome = &localenroll::username_rules($dom,\%rules_hash,\@rules_order);
5677: };
5678: if (!$@) {
5679: if ($outcome eq 'ok') {
5680: my $result;
5681: foreach my $key (keys(%rules_hash)) {
5682: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($rules_hash{$key}).'&';
5683: }
5684: $result =~ s/\&$//;
5685: $result .= ':';
5686: if (@rules_order > 0) {
5687: foreach my $item (@rules_order) {
5688: $result .= &escape($item).'&';
5689: }
5690: }
5691: $result =~ s/\&$//;
1.387 albertel 5692: &Reply($client,\$result,$userinput);
1.381 raeburn 5693: } else {
5694: &Reply($client,"error\n", $userinput);
5695: }
5696: } else {
5697: &Failure($client,"unknown_cmd\n",$userinput);
5698: }
5699: }
5700: ®ister_handler("instuserrules",\&get_institutional_user_rules,0,1,0);
5701:
1.389 raeburn 5702: sub get_institutional_id_rules {
5703: my ($cmd, $tail, $client) = @_;
5704: my $userinput = "$cmd:$tail";
5705: my $dom = &unescape($tail);
5706: my (%rules_hash,@rules_order);
5707: my $outcome;
5708: eval {
5709: local($SIG{__DIE__})='DEFAULT';
5710: $outcome = &localenroll::id_rules($dom,\%rules_hash,\@rules_order);
5711: };
5712: if (!$@) {
5713: if ($outcome eq 'ok') {
5714: my $result;
5715: foreach my $key (keys(%rules_hash)) {
5716: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($rules_hash{$key}).'&';
5717: }
5718: $result =~ s/\&$//;
5719: $result .= ':';
5720: if (@rules_order > 0) {
5721: foreach my $item (@rules_order) {
5722: $result .= &escape($item).'&';
5723: }
5724: }
5725: $result =~ s/\&$//;
5726: &Reply($client,\$result,$userinput);
5727: } else {
5728: &Reply($client,"error\n", $userinput);
5729: }
5730: } else {
5731: &Failure($client,"unknown_cmd\n",$userinput);
5732: }
5733: }
5734: ®ister_handler("instidrules",\&get_institutional_id_rules,0,1,0);
5735:
1.397 raeburn 5736: sub get_institutional_selfcreate_rules {
1.396 raeburn 5737: my ($cmd, $tail, $client) = @_;
5738: my $userinput = "$cmd:$tail";
5739: my $dom = &unescape($tail);
5740: my (%rules_hash,@rules_order);
5741: my $outcome;
5742: eval {
5743: local($SIG{__DIE__})='DEFAULT';
1.397 raeburn 5744: $outcome = &localenroll::selfcreate_rules($dom,\%rules_hash,\@rules_order);
1.396 raeburn 5745: };
5746: if (!$@) {
5747: if ($outcome eq 'ok') {
5748: my $result;
5749: foreach my $key (keys(%rules_hash)) {
5750: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($rules_hash{$key}).'&';
5751: }
5752: $result =~ s/\&$//;
5753: $result .= ':';
5754: if (@rules_order > 0) {
5755: foreach my $item (@rules_order) {
5756: $result .= &escape($item).'&';
5757: }
5758: }
5759: $result =~ s/\&$//;
5760: &Reply($client,\$result,$userinput);
5761: } else {
5762: &Reply($client,"error\n", $userinput);
5763: }
5764: } else {
5765: &Failure($client,"unknown_cmd\n",$userinput);
5766: }
5767: }
1.397 raeburn 5768: ®ister_handler("instemailrules",\&get_institutional_selfcreate_rules,0,1,0);
1.396 raeburn 5769:
1.381 raeburn 5770:
5771: sub institutional_username_check {
5772: my ($cmd, $tail, $client) = @_;
5773: my $userinput = "$cmd:$tail";
5774: my %rulecheck;
5775: my $outcome;
5776: my ($udom,$uname,@rules) = split(/:/,$tail);
5777: $udom = &unescape($udom);
5778: $uname = &unescape($uname);
5779: @rules = map {&unescape($_);} (@rules);
5780: eval {
5781: local($SIG{__DIE__})='DEFAULT';
5782: $outcome = &localenroll::username_check($udom,$uname,\@rules,\%rulecheck);
5783: };
5784: if (!$@) {
5785: if ($outcome eq 'ok') {
5786: my $result='';
5787: foreach my $key (keys(%rulecheck)) {
5788: $result.=&escape($key).'='.&Apache::lonnet::freeze_escape($rulecheck{$key}).'&';
5789: }
1.387 albertel 5790: &Reply($client,\$result,$userinput);
1.381 raeburn 5791: } else {
5792: &Reply($client,"error\n", $userinput);
5793: }
5794: } else {
5795: &Failure($client,"unknown_cmd\n",$userinput);
5796: }
5797: }
5798: ®ister_handler("instrulecheck",\&institutional_username_check,0,1,0);
5799:
1.389 raeburn 5800: sub institutional_id_check {
5801: my ($cmd, $tail, $client) = @_;
5802: my $userinput = "$cmd:$tail";
5803: my %rulecheck;
5804: my $outcome;
5805: my ($udom,$id,@rules) = split(/:/,$tail);
5806: $udom = &unescape($udom);
5807: $id = &unescape($id);
5808: @rules = map {&unescape($_);} (@rules);
5809: eval {
5810: local($SIG{__DIE__})='DEFAULT';
5811: $outcome = &localenroll::id_check($udom,$id,\@rules,\%rulecheck);
5812: };
5813: if (!$@) {
5814: if ($outcome eq 'ok') {
5815: my $result='';
5816: foreach my $key (keys(%rulecheck)) {
5817: $result.=&escape($key).'='.&Apache::lonnet::freeze_escape($rulecheck{$key}).'&';
5818: }
5819: &Reply($client,\$result,$userinput);
5820: } else {
5821: &Reply($client,"error\n", $userinput);
5822: }
5823: } else {
5824: &Failure($client,"unknown_cmd\n",$userinput);
5825: }
5826: }
5827: ®ister_handler("instidrulecheck",\&institutional_id_check,0,1,0);
1.345 raeburn 5828:
1.397 raeburn 5829: sub institutional_selfcreate_check {
1.396 raeburn 5830: my ($cmd, $tail, $client) = @_;
5831: my $userinput = "$cmd:$tail";
5832: my %rulecheck;
5833: my $outcome;
5834: my ($udom,$email,@rules) = split(/:/,$tail);
5835: $udom = &unescape($udom);
5836: $email = &unescape($email);
5837: @rules = map {&unescape($_);} (@rules);
5838: eval {
5839: local($SIG{__DIE__})='DEFAULT';
1.397 raeburn 5840: $outcome = &localenroll::selfcreate_check($udom,$email,\@rules,\%rulecheck);
1.396 raeburn 5841: };
5842: if (!$@) {
5843: if ($outcome eq 'ok') {
5844: my $result='';
5845: foreach my $key (keys(%rulecheck)) {
5846: $result.=&escape($key).'='.&Apache::lonnet::freeze_escape($rulecheck{$key}).'&';
5847: }
5848: &Reply($client,\$result,$userinput);
5849: } else {
5850: &Reply($client,"error\n", $userinput);
5851: }
5852: } else {
5853: &Failure($client,"unknown_cmd\n",$userinput);
5854: }
5855: }
1.397 raeburn 5856: ®ister_handler("instselfcreatecheck",\&institutional_selfcreate_check,0,1,0);
1.396 raeburn 5857:
1.317 raeburn 5858: # Get domain specific conditions for import of student photographs to a course
5859: #
5860: # Retrieves information from photo_permission subroutine in localenroll.
5861: # Returns outcome (ok) if no processing errors, and whether course owner is
5862: # required to accept conditions of use (yes/no).
5863: #
5864: #
5865: sub photo_permission_handler {
5866: my ($cmd, $tail, $client) = @_;
5867: my $userinput = "$cmd:$tail";
5868: my $cdom = $tail;
5869: my ($perm_reqd,$conditions);
1.320 albertel 5870: my $outcome;
5871: eval {
5872: local($SIG{__DIE__})='DEFAULT';
5873: $outcome = &localenroll::photo_permission($cdom,\$perm_reqd,
5874: \$conditions);
5875: };
5876: if (!$@) {
5877: &Reply($client, &escape($outcome.':'.$perm_reqd.':'. $conditions)."\n",
5878: $userinput);
5879: } else {
5880: &Failure($client,"unknown_cmd\n",$userinput);
5881: }
5882: return 1;
1.317 raeburn 5883: }
5884: ®ister_handler("autophotopermission",\&photo_permission_handler,0,1,0);
5885:
5886: #
5887: # Checks if student photo is available for a user in the domain, in the user's
5888: # directory (in /userfiles/internal/studentphoto.jpg).
5889: # Uses localstudentphoto:fetch() to ensure there is an up to date copy of
5890: # the student's photo.
5891:
5892: sub photo_check_handler {
5893: my ($cmd, $tail, $client) = @_;
5894: my $userinput = "$cmd:$tail";
5895: my ($udom,$uname,$pid) = split(/:/,$tail);
5896: $udom = &unescape($udom);
5897: $uname = &unescape($uname);
5898: $pid = &unescape($pid);
5899: my $path=&propath($udom,$uname).'/userfiles/internal/';
5900: if (!-e $path) {
5901: &mkpath($path);
5902: }
5903: my $response;
5904: my $result = &localstudentphoto::fetch($udom,$uname,$pid,\$response);
5905: $result .= ':'.$response;
5906: &Reply($client, &escape($result)."\n",$userinput);
1.320 albertel 5907: return 1;
1.317 raeburn 5908: }
5909: ®ister_handler("autophotocheck",\&photo_check_handler,0,1,0);
5910:
5911: #
5912: # Retrieve information from localenroll about whether to provide a button
5913: # for users who have enbled import of student photos to initiate an
5914: # update of photo files for registered students. Also include
5915: # comment to display alongside button.
5916:
5917: sub photo_choice_handler {
5918: my ($cmd, $tail, $client) = @_;
5919: my $userinput = "$cmd:$tail";
5920: my $cdom = &unescape($tail);
1.320 albertel 5921: my ($update,$comment);
5922: eval {
5923: local($SIG{__DIE__})='DEFAULT';
5924: ($update,$comment) = &localenroll::manager_photo_update($cdom);
5925: };
5926: if (!$@) {
5927: &Reply($client,&escape($update).':'.&escape($comment)."\n",$userinput);
5928: } else {
5929: &Failure($client,"unknown_cmd\n",$userinput);
5930: }
5931: return 1;
1.317 raeburn 5932: }
5933: ®ister_handler("autophotochoice",\&photo_choice_handler,0,1,0);
5934:
1.265 albertel 5935: #
5936: # Gets a student's photo to exist (in the correct image type) in the user's
5937: # directory.
5938: # Formal Parameters:
5939: # $cmd - The command request that got us dispatched.
5940: # $tail - A colon separated set of words that will be split into:
5941: # $domain - student's domain
5942: # $uname - student username
5943: # $type - image type desired
5944: # $client - The socket open on the client.
5945: # Returns:
5946: # 1 - continue processing.
1.317 raeburn 5947:
1.265 albertel 5948: sub student_photo_handler {
5949: my ($cmd, $tail, $client) = @_;
1.317 raeburn 5950: my ($domain,$uname,$ext,$type) = split(/:/, $tail);
1.265 albertel 5951:
1.317 raeburn 5952: my $path=&propath($domain,$uname). '/userfiles/internal/';
5953: my $filename = 'studentphoto.'.$ext;
5954: if ($type eq 'thumbnail') {
5955: $filename = 'studentphoto_tn.'.$ext;
5956: }
5957: if (-e $path.$filename) {
1.265 albertel 5958: &Reply($client,"ok\n","$cmd:$tail");
5959: return 1;
5960: }
5961: &mkpath($path);
1.317 raeburn 5962: my $file;
5963: if ($type eq 'thumbnail') {
1.320 albertel 5964: eval {
5965: local($SIG{__DIE__})='DEFAULT';
5966: $file=&localstudentphoto::fetch_thumbnail($domain,$uname);
5967: };
1.317 raeburn 5968: } else {
5969: $file=&localstudentphoto::fetch($domain,$uname);
5970: }
1.265 albertel 5971: if (!$file) {
5972: &Failure($client,"unavailable\n","$cmd:$tail");
5973: return 1;
5974: }
1.317 raeburn 5975: if (!-e $path.$filename) { &convert_photo($file,$path.$filename); }
5976: if (-e $path.$filename) {
1.265 albertel 5977: &Reply($client,"ok\n","$cmd:$tail");
5978: return 1;
5979: }
5980: &Failure($client,"unable_to_convert\n","$cmd:$tail");
5981: return 1;
5982: }
5983: ®ister_handler("studentphoto", \&student_photo_handler, 0, 1, 0);
1.246 foxr 5984:
1.361 raeburn 5985: sub inst_usertypes_handler {
5986: my ($cmd, $domain, $client) = @_;
5987: my $res;
5988: my $userinput = $cmd.":".$domain; # For logging purposes.
1.370 albertel 5989: my (%typeshash,@order,$result);
5990: eval {
5991: local($SIG{__DIE__})='DEFAULT';
5992: $result=&localenroll::inst_usertypes($domain,\%typeshash,\@order);
5993: };
5994: if ($result eq 'ok') {
1.361 raeburn 5995: if (keys(%typeshash) > 0) {
5996: foreach my $key (keys(%typeshash)) {
5997: $res.=&escape($key).'='.&escape($typeshash{$key}).'&';
5998: }
5999: }
6000: $res=~s/\&$//;
6001: $res .= ':';
6002: if (@order > 0) {
6003: foreach my $item (@order) {
6004: $res .= &escape($item).'&';
6005: }
6006: }
6007: $res=~s/\&$//;
6008: }
1.387 albertel 6009: &Reply($client, \$res, $userinput);
1.361 raeburn 6010: return 1;
6011: }
6012: ®ister_handler("inst_usertypes", \&inst_usertypes_handler, 0, 1, 0);
6013:
1.264 albertel 6014: # mkpath makes all directories for a file, expects an absolute path with a
6015: # file or a trailing / if just a dir is passed
6016: # returns 1 on success 0 on failure
6017: sub mkpath {
6018: my ($file)=@_;
6019: my @parts=split(/\//,$file,-1);
6020: my $now=$parts[0].'/'.$parts[1].'/'.$parts[2];
6021: for (my $i=3;$i<= ($#parts-1);$i++) {
1.265 albertel 6022: $now.='/'.$parts[$i];
1.264 albertel 6023: if (!-e $now) {
6024: if (!mkdir($now,0770)) { return 0; }
6025: }
6026: }
6027: return 1;
6028: }
6029:
1.207 foxr 6030: #---------------------------------------------------------------
6031: #
6032: # Getting, decoding and dispatching requests:
6033: #
6034: #
6035: # Get a Request:
6036: # Gets a Request message from the client. The transaction
6037: # is defined as a 'line' of text. We remove the new line
6038: # from the text line.
1.226 foxr 6039: #
1.211 albertel 6040: sub get_request {
1.207 foxr 6041: my $input = <$client>;
6042: chomp($input);
1.226 foxr 6043:
1.234 foxr 6044: &Debug("get_request: Request = $input\n");
1.207 foxr 6045:
6046: &status('Processing '.$clientname.':'.$input);
6047:
6048: return $input;
6049: }
1.212 foxr 6050: #---------------------------------------------------------------
6051: #
6052: # Process a request. This sub should shrink as each action
6053: # gets farmed out into a separat sub that is registered
6054: # with the dispatch hash.
6055: #
6056: # Parameters:
6057: # user_input - The request received from the client (lonc).
6058: # Returns:
6059: # true to keep processing, false if caller should exit.
6060: #
6061: sub process_request {
6062: my ($userinput) = @_; # Easier for now to break style than to
6063: # fix all the userinput -> user_input.
6064: my $wasenc = 0; # True if request was encrypted.
6065: # ------------------------------------------------------------ See if encrypted
1.322 albertel 6066: # for command
6067: # sethost:<server>
6068: # <command>:<args>
6069: # we just send it to the processor
6070: # for
6071: # sethost:<server>:<command>:<args>
6072: # we do the implict set host and then do the command
6073: if ($userinput =~ /^sethost:/) {
6074: (my $cmd,my $newid,$userinput) = split(':',$userinput,3);
6075: if (defined($userinput)) {
6076: &sethost("$cmd:$newid");
6077: } else {
6078: $userinput = "$cmd:$newid";
6079: }
6080: }
6081:
1.212 foxr 6082: if ($userinput =~ /^enc/) {
6083: $userinput = decipher($userinput);
6084: $wasenc=1;
6085: if(!$userinput) { # Cipher not defined.
1.251 foxr 6086: &Failure($client, "error: Encrypted data without negotated key\n");
1.212 foxr 6087: return 0;
6088: }
6089: }
6090: Debug("process_request: $userinput\n");
6091:
1.213 foxr 6092: #
6093: # The 'correct way' to add a command to lond is now to
6094: # write a sub to execute it and Add it to the command dispatch
6095: # hash via a call to register_handler.. The comments to that
6096: # sub should give you enough to go on to show how to do this
6097: # along with the examples that are building up as this code
6098: # is getting refactored. Until all branches of the
6099: # if/elseif monster below have been factored out into
6100: # separate procesor subs, if the dispatch hash is missing
6101: # the command keyword, we will fall through to the remainder
6102: # of the if/else chain below in order to keep this thing in
6103: # working order throughout the transmogrification.
6104:
6105: my ($command, $tail) = split(/:/, $userinput, 2);
6106: chomp($command);
6107: chomp($tail);
6108: $tail =~ s/(\r)//; # This helps people debugging with e.g. telnet.
1.214 foxr 6109: $command =~ s/(\r)//; # And this too for parameterless commands.
6110: if(!$tail) {
6111: $tail =""; # defined but blank.
6112: }
1.213 foxr 6113:
6114: &Debug("Command received: $command, encoded = $wasenc");
6115:
6116: if(defined $Dispatcher{$command}) {
6117:
6118: my $dispatch_info = $Dispatcher{$command};
6119: my $handler = $$dispatch_info[0];
6120: my $need_encode = $$dispatch_info[1];
6121: my $client_types = $$dispatch_info[2];
6122: Debug("Matched dispatch hash: mustencode: $need_encode "
6123: ."ClientType $client_types");
6124:
6125: # Validate the request:
6126:
6127: my $ok = 1;
6128: my $requesterprivs = 0;
6129: if(&isClient()) {
6130: $requesterprivs |= $CLIENT_OK;
6131: }
6132: if(&isManager()) {
6133: $requesterprivs |= $MANAGER_OK;
6134: }
6135: if($need_encode && (!$wasenc)) {
6136: Debug("Must encode but wasn't: $need_encode $wasenc");
6137: $ok = 0;
6138: }
6139: if(($client_types & $requesterprivs) == 0) {
6140: Debug("Client not privileged to do this operation");
6141: $ok = 0;
6142: }
6143:
6144: if($ok) {
6145: Debug("Dispatching to handler $command $tail");
6146: my $keep_going = &$handler($command, $tail, $client);
6147: return $keep_going;
6148: } else {
6149: Debug("Refusing to dispatch because client did not match requirements");
6150: Failure($client, "refused\n", $userinput);
6151: return 1;
6152: }
6153:
6154: }
6155:
1.262 foxr 6156: print $client "unknown_cmd\n";
1.212 foxr 6157: # -------------------------------------------------------------------- complete
6158: Debug("process_request - returning 1");
6159: return 1;
6160: }
1.207 foxr 6161: #
6162: # Decipher encoded traffic
6163: # Parameters:
6164: # input - Encoded data.
6165: # Returns:
6166: # Decoded data or undef if encryption key was not yet negotiated.
6167: # Implicit input:
6168: # cipher - This global holds the negotiated encryption key.
6169: #
1.211 albertel 6170: sub decipher {
1.207 foxr 6171: my ($input) = @_;
6172: my $output = '';
1.212 foxr 6173:
6174:
1.207 foxr 6175: if($cipher) {
6176: my($enc, $enclength, $encinput) = split(/:/, $input);
6177: for(my $encidx = 0; $encidx < length($encinput); $encidx += 16) {
6178: $output .=
6179: $cipher->decrypt(pack("H16", substr($encinput, $encidx, 16)));
6180: }
6181: return substr($output, 0, $enclength);
6182: } else {
6183: return undef;
6184: }
6185: }
6186:
6187: #
6188: # Register a command processor. This function is invoked to register a sub
6189: # to process a request. Once registered, the ProcessRequest sub can automatically
6190: # dispatch requests to an appropriate sub, and do the top level validity checking
6191: # as well:
6192: # - Is the keyword recognized.
6193: # - Is the proper client type attempting the request.
6194: # - Is the request encrypted if it has to be.
6195: # Parameters:
6196: # $request_name - Name of the request being registered.
6197: # This is the command request that will match
6198: # against the hash keywords to lookup the information
6199: # associated with the dispatch information.
6200: # $procedure - Reference to a sub to call to process the request.
6201: # All subs get called as follows:
6202: # Procedure($cmd, $tail, $replyfd, $key)
6203: # $cmd - the actual keyword that invoked us.
6204: # $tail - the tail of the request that invoked us.
6205: # $replyfd- File descriptor connected to the client
6206: # $must_encode - True if the request must be encoded to be good.
6207: # $client_ok - True if it's ok for a client to request this.
6208: # $manager_ok - True if it's ok for a manager to request this.
6209: # Side effects:
6210: # - On success, the Dispatcher hash has an entry added for the key $RequestName
6211: # - On failure, the program will die as it's a bad internal bug to try to
6212: # register a duplicate command handler.
6213: #
1.211 albertel 6214: sub register_handler {
1.212 foxr 6215: my ($request_name,$procedure,$must_encode, $client_ok,$manager_ok) = @_;
1.207 foxr 6216:
6217: # Don't allow duplication#
6218:
6219: if (defined $Dispatcher{$request_name}) {
6220: die "Attempting to define a duplicate request handler for $request_name\n";
6221: }
6222: # Build the client type mask:
6223:
6224: my $client_type_mask = 0;
6225: if($client_ok) {
6226: $client_type_mask |= $CLIENT_OK;
6227: }
6228: if($manager_ok) {
6229: $client_type_mask |= $MANAGER_OK;
6230: }
6231:
6232: # Enter the hash:
6233:
6234: my @entry = ($procedure, $must_encode, $client_type_mask);
6235:
6236: $Dispatcher{$request_name} = \@entry;
6237:
6238: }
6239:
6240:
6241: #------------------------------------------------------------------
6242:
6243:
6244:
6245:
1.141 foxr 6246: #
1.96 foxr 6247: # Convert an error return code from lcpasswd to a string value.
6248: #
6249: sub lcpasswdstrerror {
6250: my $ErrorCode = shift;
1.97 foxr 6251: if(($ErrorCode < 0) || ($ErrorCode > $lastpwderror)) {
1.96 foxr 6252: return "lcpasswd Unrecognized error return value ".$ErrorCode;
6253: } else {
1.98 foxr 6254: return $passwderrors[$ErrorCode];
1.96 foxr 6255: }
6256: }
6257:
1.23 harris41 6258: # grabs exception and records it to log before exiting
6259: sub catchexception {
1.27 albertel 6260: my ($error)=@_;
1.25 www 6261: $SIG{'QUIT'}='DEFAULT';
6262: $SIG{__DIE__}='DEFAULT';
1.165 albertel 6263: &status("Catching exception");
1.190 albertel 6264: &logthis("<font color='red'>CRITICAL: "
1.373 albertel 6265: ."ABNORMAL EXIT. Child $$ for server ".$perlvar{'lonHostID'}." died through "
1.27 albertel 6266: ."a crash with this error msg->[$error]</font>");
1.57 www 6267: &logthis('Famous last words: '.$status.' - '.$lastlog);
1.27 albertel 6268: if ($client) { print $client "error: $error\n"; }
1.59 www 6269: $server->close();
1.27 albertel 6270: die($error);
1.23 harris41 6271: }
1.63 www 6272: sub timeout {
1.165 albertel 6273: &status("Handling Timeout");
1.190 albertel 6274: &logthis("<font color='red'>CRITICAL: TIME OUT ".$$."</font>");
1.63 www 6275: &catchexception('Timeout');
6276: }
1.22 harris41 6277: # -------------------------------- Set signal handlers to record abnormal exits
6278:
1.226 foxr 6279:
1.22 harris41 6280: $SIG{'QUIT'}=\&catchexception;
6281: $SIG{__DIE__}=\&catchexception;
6282:
1.81 matthew 6283: # ---------------------------------- Read loncapa_apache.conf and loncapa.conf
1.95 harris41 6284: &status("Read loncapa.conf and loncapa_apache.conf");
6285: my $perlvarref=LONCAPA::Configuration::read_conf('loncapa.conf');
1.141 foxr 6286: %perlvar=%{$perlvarref};
1.80 harris41 6287: undef $perlvarref;
1.19 www 6288:
1.35 harris41 6289: # ----------------------------- Make sure this process is running from user=www
6290: my $wwwid=getpwnam('www');
6291: if ($wwwid!=$<) {
1.134 albertel 6292: my $emailto="$perlvar{'lonAdmEMail'},$perlvar{'lonSysEMail'}";
6293: my $subj="LON: $currenthostid User ID mismatch";
1.37 harris41 6294: system("echo 'User ID mismatch. lond must be run as user www.' |\
1.35 harris41 6295: mailto $emailto -s '$subj' > /dev/null");
6296: exit 1;
6297: }
6298:
1.19 www 6299: # --------------------------------------------- Check if other instance running
6300:
6301: my $pidfile="$perlvar{'lonDaemons'}/logs/lond.pid";
6302:
6303: if (-e $pidfile) {
6304: my $lfh=IO::File->new("$pidfile");
6305: my $pide=<$lfh>;
6306: chomp($pide);
1.29 harris41 6307: if (kill 0 => $pide) { die "already running"; }
1.19 www 6308: }
1.1 albertel 6309:
6310: # ------------------------------------------------------------- Read hosts file
6311:
6312:
6313:
6314: # establish SERVER socket, bind and listen.
6315: $server = IO::Socket::INET->new(LocalPort => $perlvar{'londPort'},
6316: Type => SOCK_STREAM,
6317: Proto => 'tcp',
1.469 foxr 6318: ReuseAddr => 1,
1.1 albertel 6319: Listen => 10 )
1.29 harris41 6320: or die "making socket: $@\n";
1.1 albertel 6321:
6322: # --------------------------------------------------------- Do global variables
6323:
6324: # global variables
6325:
1.134 albertel 6326: my %children = (); # keys are current child process IDs
1.1 albertel 6327:
6328: sub REAPER { # takes care of dead children
6329: $SIG{CHLD} = \&REAPER;
1.165 albertel 6330: &status("Handling child death");
1.178 foxr 6331: my $pid;
6332: do {
6333: $pid = waitpid(-1,&WNOHANG());
6334: if (defined($children{$pid})) {
6335: &logthis("Child $pid died");
6336: delete($children{$pid});
1.183 albertel 6337: } elsif ($pid > 0) {
1.178 foxr 6338: &logthis("Unknown Child $pid died");
6339: }
6340: } while ( $pid > 0 );
6341: foreach my $child (keys(%children)) {
6342: $pid = waitpid($child,&WNOHANG());
6343: if ($pid > 0) {
6344: &logthis("Child $child - $pid looks like we missed it's death");
6345: delete($children{$pid});
6346: }
1.176 albertel 6347: }
1.165 albertel 6348: &status("Finished Handling child death");
1.1 albertel 6349: }
6350:
6351: sub HUNTSMAN { # signal handler for SIGINT
1.165 albertel 6352: &status("Killing children (INT)");
1.1 albertel 6353: local($SIG{CHLD}) = 'IGNORE'; # we're going to kill our children
6354: kill 'INT' => keys %children;
1.59 www 6355: &logthis("Free socket: ".shutdown($server,2)); # free up socket
1.1 albertel 6356: my $execdir=$perlvar{'lonDaemons'};
6357: unlink("$execdir/logs/lond.pid");
1.190 albertel 6358: &logthis("<font color='red'>CRITICAL: Shutting down</font>");
1.165 albertel 6359: &status("Done killing children");
1.1 albertel 6360: exit; # clean up with dignity
6361: }
6362:
6363: sub HUPSMAN { # signal handler for SIGHUP
6364: local($SIG{CHLD}) = 'IGNORE'; # we're going to kill our children
1.165 albertel 6365: &status("Killing children for restart (HUP)");
1.1 albertel 6366: kill 'INT' => keys %children;
1.59 www 6367: &logthis("Free socket: ".shutdown($server,2)); # free up socket
1.190 albertel 6368: &logthis("<font color='red'>CRITICAL: Restarting</font>");
1.134 albertel 6369: my $execdir=$perlvar{'lonDaemons'};
1.30 harris41 6370: unlink("$execdir/logs/lond.pid");
1.165 albertel 6371: &status("Restarting self (HUP)");
1.1 albertel 6372: exec("$execdir/lond"); # here we go again
6373: }
6374:
1.144 foxr 6375: #
1.148 foxr 6376: # Reload the Apache daemon's state.
1.150 foxr 6377: # This is done by invoking /home/httpd/perl/apachereload
6378: # a setuid perl script that can be root for us to do this job.
1.148 foxr 6379: #
6380: sub ReloadApache {
1.473 raeburn 6381: # --------------------------- Handle case of another apachereload process (locking)
1.474 raeburn 6382: if (&LONCAPA::try_to_lock('/tmp/lock_apachereload')) {
6383: my $execdir = $perlvar{'lonDaemons'};
6384: my $script = $execdir."/apachereload";
6385: system($script);
6386: unlink('/tmp/lock_apachereload'); # Remove the lock file.
6387: }
1.148 foxr 6388: }
6389:
6390: #
1.144 foxr 6391: # Called in response to a USR2 signal.
6392: # - Reread hosts.tab
6393: # - All children connected to hosts that were removed from hosts.tab
6394: # are killed via SIGINT
6395: # - All children connected to previously existing hosts are sent SIGUSR1
6396: # - Our internal hosts hash is updated to reflect the new contents of
6397: # hosts.tab causing connections from hosts added to hosts.tab to
6398: # now be honored.
6399: #
6400: sub UpdateHosts {
1.165 albertel 6401: &status("Reload hosts.tab");
1.147 foxr 6402: logthis('<font color="blue"> Updating connections </font>');
1.148 foxr 6403: #
6404: # The %children hash has the set of IP's we currently have children
6405: # on. These need to be matched against records in the hosts.tab
6406: # Any ip's no longer in the table get killed off they correspond to
6407: # either dropped or changed hosts. Note that the re-read of the table
6408: # will take care of new and changed hosts as connections come into being.
6409:
1.371 albertel 6410: &Apache::lonnet::reset_hosts_info();
1.148 foxr 6411:
1.368 albertel 6412: foreach my $child (keys(%children)) {
1.148 foxr 6413: my $childip = $children{$child};
1.374 albertel 6414: if ($childip ne '127.0.0.1'
6415: && !defined(&Apache::lonnet::get_hosts_from_ip($childip))) {
1.149 foxr 6416: logthis('<font color="blue"> UpdateHosts killing child '
6417: ." $child for ip $childip </font>");
1.148 foxr 6418: kill('INT', $child);
1.149 foxr 6419: } else {
6420: logthis('<font color="green"> keeping child for ip '
6421: ." $childip (pid=$child) </font>");
1.148 foxr 6422: }
6423: }
6424: ReloadApache;
1.165 albertel 6425: &status("Finished reloading hosts.tab");
1.144 foxr 6426: }
6427:
1.148 foxr 6428:
1.57 www 6429: sub checkchildren {
1.165 albertel 6430: &status("Checking on the children (sending signals)");
1.57 www 6431: &initnewstatus();
6432: &logstatus();
6433: &logthis('Going to check on the children');
1.134 albertel 6434: my $docdir=$perlvar{'lonDocRoot'};
1.61 harris41 6435: foreach (sort keys %children) {
1.221 albertel 6436: #sleep 1;
1.57 www 6437: unless (kill 'USR1' => $_) {
6438: &logthis ('Child '.$_.' is dead');
6439: &logstatus($$.' is dead');
1.221 albertel 6440: delete($children{$_});
1.57 www 6441: }
1.61 harris41 6442: }
1.63 www 6443: sleep 5;
1.212 foxr 6444: $SIG{ALRM} = sub { Debug("timeout");
6445: die "timeout"; };
1.113 albertel 6446: $SIG{__DIE__} = 'DEFAULT';
1.165 albertel 6447: &status("Checking on the children (waiting for reports)");
1.63 www 6448: foreach (sort keys %children) {
6449: unless (-e "$docdir/lon-status/londchld/$_.txt") {
1.113 albertel 6450: eval {
6451: alarm(300);
1.63 www 6452: &logthis('Child '.$_.' did not respond');
1.67 albertel 6453: kill 9 => $_;
1.131 albertel 6454: #$emailto="$perlvar{'lonAdmEMail'},$perlvar{'lonSysEMail'}";
6455: #$subj="LON: $currenthostid killed lond process $_";
6456: #my $result=`echo 'Killed lond process $_.' | mailto $emailto -s '$subj' > /dev/null`;
6457: #$execdir=$perlvar{'lonDaemons'};
6458: #$result=`/bin/cp $execdir/logs/lond.log $execdir/logs/lond.log.$_`;
1.221 albertel 6459: delete($children{$_});
1.113 albertel 6460: alarm(0);
6461: }
1.63 www 6462: }
6463: }
1.113 albertel 6464: $SIG{ALRM} = 'DEFAULT';
1.155 albertel 6465: $SIG{__DIE__} = \&catchexception;
1.165 albertel 6466: &status("Finished checking children");
1.221 albertel 6467: &logthis('Finished Checking children');
1.57 www 6468: }
6469:
1.1 albertel 6470: # --------------------------------------------------------------------- Logging
6471:
6472: sub logthis {
6473: my $message=shift;
6474: my $execdir=$perlvar{'lonDaemons'};
6475: my $fh=IO::File->new(">>$execdir/logs/lond.log");
6476: my $now=time;
6477: my $local=localtime($now);
1.58 www 6478: $lastlog=$local.': '.$message;
1.1 albertel 6479: print $fh "$local ($$): $message\n";
6480: }
6481:
1.77 foxr 6482: # ------------------------- Conditional log if $DEBUG true.
6483: sub Debug {
6484: my $message = shift;
6485: if($DEBUG) {
6486: &logthis($message);
6487: }
6488: }
1.161 foxr 6489:
6490: #
6491: # Sub to do replies to client.. this gives a hook for some
6492: # debug tracing too:
6493: # Parameters:
6494: # fd - File open on client.
6495: # reply - Text to send to client.
6496: # request - Original request from client.
6497: #
1.490 droeschl 6498: #NOTE $reply must be terminated by exactly *one* \n. If $reply is a reference
6499: #this is done automatically ($$reply must not contain any \n in this case).
6500: #If $reply is a string the caller has to ensure this.
1.161 foxr 6501: sub Reply {
1.192 foxr 6502: my ($fd, $reply, $request) = @_;
1.387 albertel 6503: if (ref($reply)) {
6504: print $fd $$reply;
6505: print $fd "\n";
6506: if ($DEBUG) { Debug("Request was $request Reply was $$reply"); }
6507: } else {
6508: print $fd $reply;
6509: if ($DEBUG) { Debug("Request was $request Reply was $reply"); }
6510: }
1.212 foxr 6511: $Transactions++;
6512: }
6513:
6514:
6515: #
6516: # Sub to report a failure.
6517: # This function:
6518: # - Increments the failure statistic counters.
6519: # - Invokes Reply to send the error message to the client.
6520: # Parameters:
6521: # fd - File descriptor open on the client
6522: # reply - Reply text to emit.
6523: # request - The original request message (used by Reply
6524: # to debug if that's enabled.
6525: # Implicit outputs:
6526: # $Failures- The number of failures is incremented.
6527: # Reply (invoked here) sends a message to the
6528: # client:
6529: #
6530: sub Failure {
6531: my $fd = shift;
6532: my $reply = shift;
6533: my $request = shift;
6534:
6535: $Failures++;
6536: Reply($fd, $reply, $request); # That's simple eh?
1.161 foxr 6537: }
1.57 www 6538: # ------------------------------------------------------------------ Log status
6539:
6540: sub logstatus {
1.178 foxr 6541: &status("Doing logging");
6542: my $docdir=$perlvar{'lonDocRoot'};
6543: {
6544: my $fh=IO::File->new(">$docdir/lon-status/londchld/$$.txt");
1.200 matthew 6545: print $fh $status."\n".$lastlog."\n".time."\n$keymode";
1.178 foxr 6546: $fh->close();
6547: }
1.221 albertel 6548: &status("Finished $$.txt");
6549: {
6550: open(LOG,">>$docdir/lon-status/londstatus.txt");
6551: flock(LOG,LOCK_EX);
6552: print LOG $$."\t".$clientname."\t".$currenthostid."\t"
6553: .$status."\t".$lastlog."\t $keymode\n";
1.275 albertel 6554: flock(LOG,LOCK_UN);
1.221 albertel 6555: close(LOG);
6556: }
1.178 foxr 6557: &status("Finished logging");
1.57 www 6558: }
6559:
6560: sub initnewstatus {
6561: my $docdir=$perlvar{'lonDocRoot'};
6562: my $fh=IO::File->new(">$docdir/lon-status/londstatus.txt");
1.460 foxr 6563: my $now=time();
1.57 www 6564: my $local=localtime($now);
6565: print $fh "LOND status $local - parent $$\n\n";
1.64 www 6566: opendir(DIR,"$docdir/lon-status/londchld");
1.134 albertel 6567: while (my $filename=readdir(DIR)) {
1.64 www 6568: unlink("$docdir/lon-status/londchld/$filename");
6569: }
6570: closedir(DIR);
1.57 www 6571: }
6572:
6573: # -------------------------------------------------------------- Status setting
6574:
6575: sub status {
6576: my $what=shift;
6577: my $now=time;
6578: my $local=localtime($now);
1.178 foxr 6579: $status=$local.': '.$what;
6580: $0='lond: '.$what.' '.$local;
1.57 www 6581: }
1.11 www 6582:
1.13 www 6583: # -------------------------------------------------------------- Talk to lonsql
6584:
1.234 foxr 6585: sub sql_reply {
1.12 harris41 6586: my ($cmd)=@_;
1.234 foxr 6587: my $answer=&sub_sql_reply($cmd);
6588: if ($answer eq 'con_lost') { $answer=&sub_sql_reply($cmd); }
1.12 harris41 6589: return $answer;
6590: }
6591:
1.234 foxr 6592: sub sub_sql_reply {
1.12 harris41 6593: my ($cmd)=@_;
6594: my $unixsock="mysqlsock";
6595: my $peerfile="$perlvar{'lonSockDir'}/$unixsock";
6596: my $sclient=IO::Socket::UNIX->new(Peer =>"$peerfile",
6597: Type => SOCK_STREAM,
6598: Timeout => 10)
6599: or return "con_lost";
1.319 www 6600: print $sclient "$cmd:$currentdomainid\n";
1.12 harris41 6601: my $answer=<$sclient>;
6602: chomp($answer);
6603: if (!$answer) { $answer="con_lost"; }
6604: return $answer;
6605: }
6606:
1.1 albertel 6607: # --------------------------------------- Is this the home server of an author?
1.11 www 6608:
1.1 albertel 6609: sub ishome {
6610: my $author=shift;
6611: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
6612: my ($udom,$uname)=split(/\//,$author);
6613: my $proname=propath($udom,$uname);
6614: if (-e $proname) {
6615: return 'owner';
6616: } else {
6617: return 'not_owner';
6618: }
6619: }
6620:
6621: # ======================================================= Continue main program
6622: # ---------------------------------------------------- Fork once and dissociate
6623:
1.134 albertel 6624: my $fpid=fork;
1.1 albertel 6625: exit if $fpid;
1.29 harris41 6626: die "Couldn't fork: $!" unless defined ($fpid);
1.1 albertel 6627:
1.29 harris41 6628: POSIX::setsid() or die "Can't start new session: $!";
1.1 albertel 6629:
6630: # ------------------------------------------------------- Write our PID on disk
6631:
1.134 albertel 6632: my $execdir=$perlvar{'lonDaemons'};
1.1 albertel 6633: open (PIDSAVE,">$execdir/logs/lond.pid");
6634: print PIDSAVE "$$\n";
6635: close(PIDSAVE);
1.190 albertel 6636: &logthis("<font color='red'>CRITICAL: ---------- Starting ----------</font>");
1.57 www 6637: &status('Starting');
1.1 albertel 6638:
1.106 foxr 6639:
1.1 albertel 6640:
6641: # ----------------------------------------------------- Install signal handlers
6642:
1.57 www 6643:
1.1 albertel 6644: $SIG{CHLD} = \&REAPER;
6645: $SIG{INT} = $SIG{TERM} = \&HUNTSMAN;
6646: $SIG{HUP} = \&HUPSMAN;
1.57 www 6647: $SIG{USR1} = \&checkchildren;
1.144 foxr 6648: $SIG{USR2} = \&UpdateHosts;
1.106 foxr 6649:
1.148 foxr 6650: # Read the host hashes:
1.368 albertel 6651: &Apache::lonnet::load_hosts_tab();
1.447 raeburn 6652: my %iphost = &Apache::lonnet::get_iphost(1);
1.106 foxr 6653:
1.480 raeburn 6654: $dist=`$perlvar{'lonDaemons'}/distprobe`;
1.286 albertel 6655:
1.471 raeburn 6656: my $arch = `uname -i`;
1.475 raeburn 6657: chomp($arch);
1.471 raeburn 6658: if ($arch eq 'unknown') {
6659: $arch = `uname -m`;
1.475 raeburn 6660: chomp($arch);
1.471 raeburn 6661: }
6662:
1.106 foxr 6663: # --------------------------------------------------------------
6664: # Accept connections. When a connection comes in, it is validated
6665: # and if good, a child process is created to process transactions
6666: # along the connection.
6667:
1.1 albertel 6668: while (1) {
1.165 albertel 6669: &status('Starting accept');
1.106 foxr 6670: $client = $server->accept() or next;
1.165 albertel 6671: &status('Accepted '.$client.' off to spawn');
1.386 albertel 6672: make_new_child($client);
1.165 albertel 6673: &status('Finished spawning');
1.1 albertel 6674: }
6675:
1.212 foxr 6676: sub make_new_child {
6677: my $pid;
6678: # my $cipher; # Now global
6679: my $sigset;
1.178 foxr 6680:
1.212 foxr 6681: $client = shift;
6682: &status('Starting new child '.$client);
6683: &logthis('<font color="green"> Attempting to start child ('.$client.
6684: ")</font>");
6685: # block signal for fork
6686: $sigset = POSIX::SigSet->new(SIGINT);
6687: sigprocmask(SIG_BLOCK, $sigset)
6688: or die "Can't block SIGINT for fork: $!\n";
1.178 foxr 6689:
1.212 foxr 6690: die "fork: $!" unless defined ($pid = fork);
1.178 foxr 6691:
1.212 foxr 6692: $client->sockopt(SO_KEEPALIVE, 1); # Enable monitoring of
6693: # connection liveness.
1.178 foxr 6694:
1.212 foxr 6695: #
6696: # Figure out who we're talking to so we can record the peer in
6697: # the pid hash.
6698: #
6699: my $caller = getpeername($client);
6700: my ($port,$iaddr);
6701: if (defined($caller) && length($caller) > 0) {
6702: ($port,$iaddr)=unpack_sockaddr_in($caller);
6703: } else {
6704: &logthis("Unable to determine who caller was, getpeername returned nothing");
6705: }
6706: if (defined($iaddr)) {
6707: $clientip = inet_ntoa($iaddr);
6708: Debug("Connected with $clientip");
6709: } else {
6710: &logthis("Unable to determine clientip");
6711: $clientip='Unavailable';
6712: }
6713:
6714: if ($pid) {
6715: # Parent records the child's birth and returns.
6716: sigprocmask(SIG_UNBLOCK, $sigset)
6717: or die "Can't unblock SIGINT for fork: $!\n";
6718: $children{$pid} = $clientip;
6719: &status('Started child '.$pid);
1.462 foxr 6720: close($client);
1.212 foxr 6721: return;
6722: } else {
6723: # Child can *not* return from this subroutine.
6724: $SIG{INT} = 'DEFAULT'; # make SIGINT kill us as it did before
6725: $SIG{CHLD} = 'DEFAULT'; #make this default so that pwauth returns
6726: #don't get intercepted
6727: $SIG{USR1}= \&logstatus;
6728: $SIG{ALRM}= \&timeout;
1.468 foxr 6729: #
6730: # Block sigpipe as it gets thrownon socket disconnect and we want to
6731: # deal with that as a read faiure instead.
6732: #
6733: my $blockset = POSIX::SigSet->new(SIGPIPE);
6734: sigprocmask(SIG_BLOCK, $blockset);
6735:
1.212 foxr 6736: $lastlog='Forked ';
6737: $status='Forked';
1.178 foxr 6738:
1.212 foxr 6739: # unblock signals
6740: sigprocmask(SIG_UNBLOCK, $sigset)
6741: or die "Can't unblock SIGINT for fork: $!\n";
1.178 foxr 6742:
1.212 foxr 6743: # my $tmpsnum=0; # Now global
6744: #---------------------------------------------------- kerberos 5 initialization
6745: &Authen::Krb5::init_context();
1.511 raeburn 6746:
6747: my $no_ets;
1.514 raeburn 6748: if ($dist =~ /^(?:centos|rhes|scientific)(\d+)$/) {
1.511 raeburn 6749: if ($1 >= 7) {
6750: $no_ets = 1;
6751: }
6752: } elsif ($dist =~ /^suse(\d+\.\d+)$/) {
6753: if (($1 eq '9.3') || ($1 >= 12.2)) {
6754: $no_ets = 1;
6755: }
1.514 raeburn 6756: } elsif ($dist =~ /^sles(\d+)$/) {
6757: if ($1 > 11) {
6758: $no_ets = 1;
6759: }
1.511 raeburn 6760: } elsif ($dist =~ /^fedora(\d+)$/) {
6761: if ($1 < 7) {
6762: $no_ets = 1;
6763: }
6764: }
6765: unless ($no_ets) {
1.286 albertel 6766: &Authen::Krb5::init_ets();
6767: }
1.209 albertel 6768:
1.212 foxr 6769: &status('Accepted connection');
6770: # =============================================================================
6771: # do something with the connection
6772: # -----------------------------------------------------------------------------
6773: # see if we know client and 'check' for spoof IP by ineffective challenge
1.178 foxr 6774:
1.278 albertel 6775: my $outsideip=$clientip;
6776: if ($clientip eq '127.0.0.1') {
1.368 albertel 6777: $outsideip=&Apache::lonnet::get_host_ip($perlvar{'lonHostID'});
1.278 albertel 6778: }
1.412 foxr 6779: &ReadManagerTable();
1.368 albertel 6780: my $clientrec=defined(&Apache::lonnet::get_hosts_from_ip($outsideip));
1.278 albertel 6781: my $ismanager=($managers{$outsideip} ne undef);
1.432 raeburn 6782: $clientname = "[unknown]";
1.212 foxr 6783: if($clientrec) { # Establish client type.
6784: $ConnectionType = "client";
1.368 albertel 6785: $clientname = (&Apache::lonnet::get_hosts_from_ip($outsideip))[-1];
1.212 foxr 6786: if($ismanager) {
6787: $ConnectionType = "both";
6788: }
6789: } else {
6790: $ConnectionType = "manager";
1.278 albertel 6791: $clientname = $managers{$outsideip};
1.212 foxr 6792: }
6793: my $clientok;
1.178 foxr 6794:
1.212 foxr 6795: if ($clientrec || $ismanager) {
6796: &status("Waiting for init from $clientip $clientname");
6797: &logthis('<font color="yellow">INFO: Connection, '.
6798: $clientip.
6799: " ($clientname) connection type = $ConnectionType </font>" );
6800: &status("Connecting $clientip ($clientname))");
6801: my $remotereq=<$client>;
6802: chomp($remotereq);
6803: Debug("Got init: $remotereq");
1.337 albertel 6804:
1.212 foxr 6805: if ($remotereq =~ /^init/) {
6806: &sethost("sethost:$perlvar{'lonHostID'}");
6807: #
6808: # If the remote is attempting a local init... give that a try:
6809: #
1.432 raeburn 6810: (my $i, my $inittype, $clientversion) = split(/:/, $remotereq);
1.492 droeschl 6811: # For LON-CAPA 2.9, the client session will have sent its LON-CAPA
6812: # version when initiating the connection. For LON-CAPA 2.8 and older,
6813: # the version is retrieved from the global %loncaparevs in lonnet.pm.
1.494 droeschl 6814: # $clientversion contains path to keyfile if $inittype eq 'local'
6815: # it's overridden below in this case
1.492 droeschl 6816: $clientversion ||= $Apache::lonnet::loncaparevs{$clientname};
1.209 albertel 6817:
1.212 foxr 6818: # If the connection type is ssl, but I didn't get my
6819: # certificate files yet, then I'll drop back to
6820: # insecure (if allowed).
6821:
6822: if($inittype eq "ssl") {
6823: my ($ca, $cert) = lonssl::CertificateFile;
6824: my $kfile = lonssl::KeyFile;
6825: if((!$ca) ||
6826: (!$cert) ||
6827: (!$kfile)) {
6828: $inittype = ""; # This forces insecure attempt.
6829: &logthis("<font color=\"blue\"> Certificates not "
6830: ."installed -- trying insecure auth</font>");
1.224 foxr 6831: } else { # SSL certificates are in place so
1.212 foxr 6832: } # Leave the inittype alone.
6833: }
6834:
6835: if($inittype eq "local") {
1.432 raeburn 6836: $clientversion = $perlvar{'lonVersion'};
1.212 foxr 6837: my $key = LocalConnection($client, $remotereq);
6838: if($key) {
6839: Debug("Got local key $key");
6840: $clientok = 1;
6841: my $cipherkey = pack("H32", $key);
6842: $cipher = new IDEA($cipherkey);
6843: print $client "ok:local\n";
1.442 www 6844: &logthis('<font color="green">'
1.212 foxr 6845: . "Successful local authentication </font>");
6846: $keymode = "local"
1.178 foxr 6847: } else {
1.212 foxr 6848: Debug("Failed to get local key");
6849: $clientok = 0;
6850: shutdown($client, 3);
6851: close $client;
1.178 foxr 6852: }
1.212 foxr 6853: } elsif ($inittype eq "ssl") {
6854: my $key = SSLConnection($client);
6855: if ($key) {
6856: $clientok = 1;
6857: my $cipherkey = pack("H32", $key);
6858: $cipher = new IDEA($cipherkey);
6859: &logthis('<font color="green">'
6860: ."Successfull ssl authentication with $clientname </font>");
6861: $keymode = "ssl";
6862:
1.178 foxr 6863: } else {
1.212 foxr 6864: $clientok = 0;
6865: close $client;
1.178 foxr 6866: }
1.212 foxr 6867:
6868: } else {
6869: my $ok = InsecureConnection($client);
6870: if($ok) {
6871: $clientok = 1;
6872: &logthis('<font color="green">'
6873: ."Successful insecure authentication with $clientname </font>");
6874: print $client "ok\n";
6875: $keymode = "insecure";
1.178 foxr 6876: } else {
1.212 foxr 6877: &logthis('<font color="yellow">'
6878: ."Attempted insecure connection disallowed </font>");
6879: close $client;
6880: $clientok = 0;
1.178 foxr 6881:
6882: }
6883: }
1.212 foxr 6884: } else {
6885: &logthis(
6886: "<font color='blue'>WARNING: "
6887: ."$clientip failed to initialize: >$remotereq< </font>");
6888: &status('No init '.$clientip);
6889: }
6890:
6891: } else {
6892: &logthis(
6893: "<font color='blue'>WARNING: Unknown client $clientip</font>");
6894: &status('Hung up on '.$clientip);
6895: }
6896:
6897: if ($clientok) {
6898: # ---------------- New known client connecting, could mean machine online again
1.368 albertel 6899: if (&Apache::lonnet::get_host_ip($currenthostid) ne $clientip
1.367 albertel 6900: && $clientip ne '127.0.0.1') {
1.375 albertel 6901: &Apache::lonnet::reconlonc($clientname);
1.212 foxr 6902: }
6903: &logthis("<font color='green'>Established connection: $clientname</font>");
6904: &status('Will listen to '.$clientname);
6905: # ------------------------------------------------------------ Process requests
6906: my $keep_going = 1;
6907: my $user_input;
1.448 raeburn 6908: my $clienthost = &Apache::lonnet::hostname($clientname);
6909: my $clientserverhomeID = &Apache::lonnet::get_server_homeID($clienthost);
6910: $clienthomedom = &Apache::lonnet::host_domain($clientserverhomeID);
1.212 foxr 6911: while(($user_input = get_request) && $keep_going) {
6912: alarm(120);
6913: Debug("Main: Got $user_input\n");
6914: $keep_going = &process_request($user_input);
1.178 foxr 6915: alarm(0);
1.212 foxr 6916: &status('Listening to '.$clientname." ($keymode)");
1.161 foxr 6917: }
1.212 foxr 6918:
1.59 www 6919: # --------------------------------------------- client unknown or fishy, refuse
1.212 foxr 6920: } else {
1.161 foxr 6921: print $client "refused\n";
6922: $client->close();
1.190 albertel 6923: &logthis("<font color='blue'>WARNING: "
1.161 foxr 6924: ."Rejected client $clientip, closing connection</font>");
6925: }
1.212 foxr 6926: }
1.161 foxr 6927:
1.1 albertel 6928: # =============================================================================
1.161 foxr 6929:
1.190 albertel 6930: &logthis("<font color='red'>CRITICAL: "
1.161 foxr 6931: ."Disconnect from $clientip ($clientname)</font>");
6932:
6933:
6934: # this exit is VERY important, otherwise the child will become
6935: # a producer of more and more children, forking yourself into
6936: # process death.
6937: exit;
1.106 foxr 6938:
1.78 foxr 6939: }
1.261 foxr 6940: #
6941: # Determine if a user is an author for the indicated domain.
6942: #
6943: # Parameters:
6944: # domain - domain to check in .
6945: # user - Name of user to check.
6946: #
6947: # Return:
6948: # 1 - User is an author for domain.
6949: # 0 - User is not an author for domain.
6950: sub is_author {
6951: my ($domain, $user) = @_;
6952:
6953: &Debug("is_author: $user @ $domain");
6954:
6955: my $hashref = &tie_user_hash($domain, $user, "roles",
6956: &GDBM_READER());
6957:
6958: # Author role should show up as a key /domain/_au
1.78 foxr 6959:
1.321 albertel 6960: my $value;
1.487 foxr 6961: if ($hashref) {
1.78 foxr 6962:
1.487 foxr 6963: my $key = "/$domain/_au";
6964: if (defined($hashref)) {
6965: $value = $hashref->{$key};
6966: if(!untie_user_hash($hashref)) {
6967: return 'error: ' . ($!+0)." untie (GDBM) Failed";
6968: }
6969: }
6970:
6971: if(defined($value)) {
6972: &Debug("$user @ $domain is an author");
6973: }
6974: } else {
6975: return 'error: '.($!+0)." tie (GDBM) Failed";
1.261 foxr 6976: }
6977:
6978: return defined($value);
6979: }
1.78 foxr 6980: #
6981: # Checks to see if the input roleput request was to set
1.482 www 6982: # an author role. If so, creates construction space
1.78 foxr 6983: # Parameters:
6984: # request - The request sent to the rolesput subchunk.
6985: # We're looking for /domain/_au
6986: # domain - The domain in which the user is having roles doctored.
6987: # user - Name of the user for which the role is being put.
6988: # authtype - The authentication type associated with the user.
6989: #
1.289 albertel 6990: sub manage_permissions {
1.192 foxr 6991: my ($request, $domain, $user, $authtype) = @_;
1.78 foxr 6992: # See if the request is of the form /$domain/_au
1.289 albertel 6993: if($request =~ /^(\/\Q$domain\E\/_au)$/) { # It's an author rolesput...
1.484 raeburn 6994: my $path=$perlvar{'lonDocRoot'}."/priv/$domain";
1.482 www 6995: unless (-e $path) {
6996: mkdir($path);
6997: }
6998: unless (-e $path.'/'.$user) {
6999: mkdir($path.'/'.$user);
7000: }
1.78 foxr 7001: }
7002: }
1.222 foxr 7003:
7004:
7005: #
7006: # Return the full path of a user password file, whether it exists or not.
7007: # Parameters:
7008: # domain - Domain in which the password file lives.
7009: # user - name of the user.
7010: # Returns:
7011: # Full passwd path:
7012: #
7013: sub password_path {
7014: my ($domain, $user) = @_;
1.264 albertel 7015: return &propath($domain, $user).'/passwd';
1.222 foxr 7016: }
7017:
7018: # Password Filename
7019: # Returns the path to a passwd file given domain and user... only if
7020: # it exists.
7021: # Parameters:
7022: # domain - Domain in which to search.
7023: # user - username.
7024: # Returns:
7025: # - If the password file exists returns its path.
7026: # - If the password file does not exist, returns undefined.
7027: #
7028: sub password_filename {
7029: my ($domain, $user) = @_;
7030:
7031: Debug ("PasswordFilename called: dom = $domain user = $user");
7032:
7033: my $path = &password_path($domain, $user);
7034: Debug("PasswordFilename got path: $path");
7035: if(-e $path) {
7036: return $path;
7037: } else {
7038: return undef;
7039: }
7040: }
7041:
7042: #
7043: # Rewrite the contents of the user's passwd file.
7044: # Parameters:
7045: # domain - domain of the user.
7046: # name - User's name.
7047: # contents - New contents of the file.
7048: # Returns:
7049: # 0 - Failed.
7050: # 1 - Success.
7051: #
7052: sub rewrite_password_file {
7053: my ($domain, $user, $contents) = @_;
7054:
7055: my $file = &password_filename($domain, $user);
7056: if (defined $file) {
7057: my $pf = IO::File->new(">$file");
7058: if($pf) {
7059: print $pf "$contents\n";
7060: return 1;
7061: } else {
7062: return 0;
7063: }
7064: } else {
7065: return 0;
7066: }
7067:
7068: }
7069:
1.78 foxr 7070: #
1.222 foxr 7071: # get_auth_type - Determines the authorization type of a user in a domain.
1.78 foxr 7072:
7073: # Returns the authorization type or nouser if there is no such user.
7074: #
1.436 raeburn 7075: sub get_auth_type {
1.192 foxr 7076: my ($domain, $user) = @_;
1.78 foxr 7077:
1.222 foxr 7078: Debug("get_auth_type( $domain, $user ) \n");
1.78 foxr 7079: my $proname = &propath($domain, $user);
7080: my $passwdfile = "$proname/passwd";
7081: if( -e $passwdfile ) {
7082: my $pf = IO::File->new($passwdfile);
7083: my $realpassword = <$pf>;
7084: chomp($realpassword);
1.79 foxr 7085: Debug("Password info = $realpassword\n");
1.78 foxr 7086: my ($authtype, $contentpwd) = split(/:/, $realpassword);
1.79 foxr 7087: Debug("Authtype = $authtype, content = $contentpwd\n");
1.259 raeburn 7088: return "$authtype:$contentpwd";
1.224 foxr 7089: } else {
1.79 foxr 7090: Debug("Returning nouser");
1.78 foxr 7091: return "nouser";
7092: }
1.1 albertel 7093: }
7094:
1.220 foxr 7095: #
7096: # Validate a user given their domain, name and password. This utility
7097: # function is used by both AuthenticateHandler and ChangePasswordHandler
7098: # to validate the login credentials of a user.
7099: # Parameters:
7100: # $domain - The domain being logged into (this is required due to
7101: # the capability for multihomed systems.
7102: # $user - The name of the user being validated.
7103: # $password - The user's propoposed password.
7104: #
7105: # Returns:
7106: # 1 - The domain,user,pasword triplet corresponds to a valid
7107: # user.
7108: # 0 - The domain,user,password triplet is not a valid user.
7109: #
7110: sub validate_user {
1.396 raeburn 7111: my ($domain, $user, $password, $checkdefauth) = @_;
1.220 foxr 7112:
7113: # Why negative ~pi you may well ask? Well this function is about
7114: # authentication, and therefore very important to get right.
7115: # I've initialized the flag that determines whether or not I've
7116: # validated correctly to a value it's not supposed to get.
7117: # At the end of this function. I'll ensure that it's not still that
7118: # value so we don't just wind up returning some accidental value
7119: # as a result of executing an unforseen code path that
1.249 foxr 7120: # did not set $validated. At the end of valid execution paths,
7121: # validated shoule be 1 for success or 0 for failuer.
1.220 foxr 7122:
7123: my $validated = -3.14159;
7124:
7125: # How we authenticate is determined by the type of authentication
7126: # the user has been assigned. If the authentication type is
7127: # "nouser", the user does not exist so we will return 0.
7128:
1.222 foxr 7129: my $contents = &get_auth_type($domain, $user);
1.220 foxr 7130: my ($howpwd, $contentpwd) = split(/:/, $contents);
7131:
7132: my $null = pack("C",0); # Used by kerberos auth types.
7133:
1.395 raeburn 7134: if ($howpwd eq 'nouser') {
1.396 raeburn 7135: if ($checkdefauth) {
7136: my %domdefaults = &Apache::lonnet::get_domain_defaults($domain);
7137: if ($domdefaults{'auth_def'} eq 'localauth') {
7138: $howpwd = $domdefaults{'auth_def'};
7139: $contentpwd = $domdefaults{'auth_arg_def'};
7140: } elsif ((($domdefaults{'auth_def'} eq 'krb4') ||
7141: ($domdefaults{'auth_def'} eq 'krb5')) &&
7142: ($domdefaults{'auth_arg_def'} ne '')) {
7143: $howpwd = $domdefaults{'auth_def'};
7144: $contentpwd = $domdefaults{'auth_arg_def'};
7145: }
1.395 raeburn 7146: }
7147: }
1.220 foxr 7148: if ($howpwd ne 'nouser') {
7149: if($howpwd eq "internal") { # Encrypted is in local password file.
7150: $validated = (crypt($password, $contentpwd) eq $contentpwd);
7151: }
7152: elsif ($howpwd eq "unix") { # User is a normal unix user.
7153: $contentpwd = (getpwnam($user))[1];
7154: if($contentpwd) {
7155: if($contentpwd eq 'x') { # Shadow password file...
7156: my $pwauth_path = "/usr/local/sbin/pwauth";
7157: open PWAUTH, "|$pwauth_path" or
7158: die "Cannot invoke authentication";
7159: print PWAUTH "$user\n$password\n";
7160: close PWAUTH;
7161: $validated = ! $?;
7162:
7163: } else { # Passwords in /etc/passwd.
7164: $validated = (crypt($password,
7165: $contentpwd) eq $contentpwd);
7166: }
7167: } else {
7168: $validated = 0;
7169: }
1.439 raeburn 7170: } elsif ($howpwd eq "krb4") { # user is in kerberos 4 auth. domain.
7171: my $checkwithkrb5 = 0;
7172: if ($dist =~/^fedora(\d+)$/) {
7173: if ($1 > 11) {
7174: $checkwithkrb5 = 1;
7175: }
7176: } elsif ($dist =~ /^suse([\d.]+)$/) {
7177: if ($1 > 11.1) {
7178: $checkwithkrb5 = 1;
7179: }
7180: }
7181: if ($checkwithkrb5) {
7182: $validated = &krb5_authen($password,$null,$user,$contentpwd);
7183: } else {
7184: $validated = &krb4_authen($password,$null,$user,$contentpwd);
7185: }
1.224 foxr 7186: } elsif ($howpwd eq "krb5") { # User is in kerberos 5 auth. domain.
1.439 raeburn 7187: $validated = &krb5_authen($password,$null,$user,$contentpwd);
1.224 foxr 7188: } elsif ($howpwd eq "localauth") {
1.220 foxr 7189: # Authenticate via installation specific authentcation method:
7190: $validated = &localauth::localauth($user,
7191: $password,
1.353 albertel 7192: $contentpwd,
7193: $domain);
1.358 albertel 7194: if ($validated < 0) {
1.357 albertel 7195: &logthis("localauth for $contentpwd $user:$domain returned a $validated");
7196: $validated = 0;
7197: }
1.224 foxr 7198: } else { # Unrecognized auth is also bad.
1.220 foxr 7199: $validated = 0;
7200: }
7201: } else {
7202: $validated = 0;
7203: }
7204: #
7205: # $validated has the correct stat of the authentication:
7206: #
7207:
7208: unless ($validated != -3.14159) {
1.249 foxr 7209: # I >really really< want to know if this happens.
7210: # since it indicates that user authentication is badly
7211: # broken in some code path.
7212: #
7213: die "ValidateUser - failed to set the value of validated $domain, $user $password";
1.220 foxr 7214: }
7215: return $validated;
7216: }
7217:
1.439 raeburn 7218: sub krb4_authen {
7219: my ($password,$null,$user,$contentpwd) = @_;
7220: my $validated = 0;
7221: if (!($password =~ /$null/) ) { # Null password not allowed.
7222: eval {
7223: require Authen::Krb4;
7224: };
7225: if (!$@) {
7226: my $k4error = &Authen::Krb4::get_pw_in_tkt($user,
7227: "",
7228: $contentpwd,,
7229: 'krbtgt',
7230: $contentpwd,
7231: 1,
7232: $password);
7233: if(!$k4error) {
7234: $validated = 1;
7235: } else {
7236: $validated = 0;
7237: &logthis('krb4: '.$user.', '.$contentpwd.', '.
7238: &Authen::Krb4::get_err_txt($Authen::Krb4::error));
7239: }
7240: } else {
7241: $validated = krb5_authen($password,$null,$user,$contentpwd);
7242: }
7243: }
7244: return $validated;
7245: }
7246:
7247: sub krb5_authen {
7248: my ($password,$null,$user,$contentpwd) = @_;
7249: my $validated = 0;
7250: if(!($password =~ /$null/)) { # Null password not allowed.
7251: my $krbclient = &Authen::Krb5::parse_name($user.'@'
7252: .$contentpwd);
7253: my $krbservice = "krbtgt/".$contentpwd."\@".$contentpwd;
7254: my $krbserver = &Authen::Krb5::parse_name($krbservice);
7255: my $credentials= &Authen::Krb5::cc_default();
7256: $credentials->initialize(&Authen::Krb5::parse_name($user.'@'
7257: .$contentpwd));
7258: my $krbreturn;
7259: if (exists(&Authen::Krb5::get_init_creds_password)) {
7260: $krbreturn =
7261: &Authen::Krb5::get_init_creds_password($krbclient,$password,
7262: $krbservice);
7263: $validated = (ref($krbreturn) eq 'Authen::Krb5::Creds');
7264: } else {
7265: $krbreturn =
7266: &Authen::Krb5::get_in_tkt_with_password($krbclient,$krbserver,
7267: $password,$credentials);
7268: $validated = ($krbreturn == 1);
7269: }
7270: if (!$validated) {
7271: &logthis('krb5: '.$user.', '.$contentpwd.', '.
7272: &Authen::Krb5::error());
7273: }
7274: }
7275: return $validated;
7276: }
1.220 foxr 7277:
1.84 albertel 7278: sub addline {
7279: my ($fname,$hostid,$ip,$newline)=@_;
7280: my $contents;
7281: my $found=0;
1.355 albertel 7282: my $expr='^'.quotemeta($hostid).':'.quotemeta($ip).':';
1.134 albertel 7283: my $sh;
1.84 albertel 7284: if ($sh=IO::File->new("$fname.subscription")) {
7285: while (my $subline=<$sh>) {
7286: if ($subline !~ /$expr/) {$contents.= $subline;} else {$found=1;}
7287: }
7288: $sh->close();
7289: }
7290: $sh=IO::File->new(">$fname.subscription");
7291: if ($contents) { print $sh $contents; }
7292: if ($newline) { print $sh $newline; }
7293: $sh->close();
7294: return $found;
1.86 www 7295: }
7296:
1.234 foxr 7297: sub get_chat {
1.324 raeburn 7298: my ($cdom,$cname,$udom,$uname,$group)=@_;
1.310 albertel 7299:
1.87 www 7300: my @entries=();
1.324 raeburn 7301: my $namespace = 'nohist_chatroom';
7302: my $namespace_inroom = 'nohist_inchatroom';
1.335 albertel 7303: if ($group ne '') {
1.324 raeburn 7304: $namespace .= '_'.$group;
7305: $namespace_inroom .= '_'.$group;
7306: }
7307: my $hashref = &tie_user_hash($cdom, $cname, $namespace,
1.310 albertel 7308: &GDBM_READER());
7309: if ($hashref) {
7310: @entries=map { $_.':'.$hashref->{$_} } sort(keys(%$hashref));
1.311 albertel 7311: &untie_user_hash($hashref);
1.123 www 7312: }
1.124 www 7313: my @participants=();
1.134 albertel 7314: my $cutoff=time-60;
1.324 raeburn 7315: $hashref = &tie_user_hash($cdom, $cname, $namespace_inroom,
1.310 albertel 7316: &GDBM_WRCREAT());
7317: if ($hashref) {
7318: $hashref->{$uname.':'.$udom}=time;
7319: foreach my $user (sort(keys(%$hashref))) {
7320: if ($hashref->{$user}>$cutoff) {
7321: push(@participants, 'active_participant:'.$user);
1.123 www 7322: }
7323: }
1.311 albertel 7324: &untie_user_hash($hashref);
1.86 www 7325: }
1.124 www 7326: return (@participants,@entries);
1.86 www 7327: }
7328:
1.234 foxr 7329: sub chat_add {
1.324 raeburn 7330: my ($cdom,$cname,$newchat,$group)=@_;
1.88 albertel 7331: my @entries=();
1.142 www 7332: my $time=time;
1.324 raeburn 7333: my $namespace = 'nohist_chatroom';
7334: my $logfile = 'chatroom.log';
1.335 albertel 7335: if ($group ne '') {
1.324 raeburn 7336: $namespace .= '_'.$group;
7337: $logfile = 'chatroom_'.$group.'.log';
7338: }
7339: my $hashref = &tie_user_hash($cdom, $cname, $namespace,
1.310 albertel 7340: &GDBM_WRCREAT());
7341: if ($hashref) {
7342: @entries=map { $_.':'.$hashref->{$_} } sort(keys(%$hashref));
1.88 albertel 7343: my ($lastid)=($entries[$#entries]=~/^(\w+)\:/);
7344: my ($thentime,$idnum)=split(/\_/,$lastid);
7345: my $newid=$time.'_000000';
7346: if ($thentime==$time) {
7347: $idnum=~s/^0+//;
7348: $idnum++;
7349: $idnum=substr('000000'.$idnum,-6,6);
7350: $newid=$time.'_'.$idnum;
7351: }
1.310 albertel 7352: $hashref->{$newid}=$newchat;
1.88 albertel 7353: my $expired=$time-3600;
1.310 albertel 7354: foreach my $comment (keys(%$hashref)) {
7355: my ($thistime) = ($comment=~/(\d+)\_/);
1.88 albertel 7356: if ($thistime<$expired) {
1.310 albertel 7357: delete $hashref->{$comment};
1.88 albertel 7358: }
7359: }
1.310 albertel 7360: {
7361: my $proname=&propath($cdom,$cname);
1.324 raeburn 7362: if (open(CHATLOG,">>$proname/$logfile")) {
1.310 albertel 7363: print CHATLOG ("$time:".&unescape($newchat)."\n");
7364: }
7365: close(CHATLOG);
1.142 www 7366: }
1.311 albertel 7367: &untie_user_hash($hashref);
1.86 www 7368: }
1.84 albertel 7369: }
7370:
7371: sub unsub {
7372: my ($fname,$clientip)=@_;
7373: my $result;
1.188 foxr 7374: my $unsubs = 0; # Number of successful unsubscribes:
7375:
7376:
7377: # An old way subscriptions were handled was to have a
7378: # subscription marker file:
7379:
7380: Debug("Attempting unlink of $fname.$clientname");
1.161 foxr 7381: if (unlink("$fname.$clientname")) {
1.188 foxr 7382: $unsubs++; # Successful unsub via marker file.
7383: }
7384:
7385: # The more modern way to do it is to have a subscription list
7386: # file:
7387:
1.84 albertel 7388: if (-e "$fname.subscription") {
1.161 foxr 7389: my $found=&addline($fname,$clientname,$clientip,'');
1.188 foxr 7390: if ($found) {
7391: $unsubs++;
7392: }
7393: }
7394:
7395: # If either or both of these mechanisms succeeded in unsubscribing a
7396: # resource we can return ok:
7397:
7398: if($unsubs) {
7399: $result = "ok\n";
1.84 albertel 7400: } else {
1.188 foxr 7401: $result = "not_subscribed\n";
1.84 albertel 7402: }
1.188 foxr 7403:
1.84 albertel 7404: return $result;
7405: }
7406:
1.101 www 7407: sub currentversion {
7408: my $fname=shift;
7409: my $version=-1;
7410: my $ulsdir='';
7411: if ($fname=~/^(.+)\/[^\/]+$/) {
7412: $ulsdir=$1;
7413: }
1.114 albertel 7414: my ($fnamere1,$fnamere2);
7415: # remove version if already specified
1.101 www 7416: $fname=~s/\.\d+\.(\w+(?:\.meta)*)$/\.$1/;
1.114 albertel 7417: # get the bits that go before and after the version number
7418: if ( $fname=~/^(.*\.)(\w+(?:\.meta)*)$/ ) {
7419: $fnamere1=$1;
7420: $fnamere2='.'.$2;
7421: }
1.101 www 7422: if (-e $fname) { $version=1; }
7423: if (-e $ulsdir) {
1.134 albertel 7424: if(-d $ulsdir) {
7425: if (opendir(LSDIR,$ulsdir)) {
7426: my $ulsfn;
7427: while ($ulsfn=readdir(LSDIR)) {
1.101 www 7428: # see if this is a regular file (ignore links produced earlier)
1.134 albertel 7429: my $thisfile=$ulsdir.'/'.$ulsfn;
7430: unless (-l $thisfile) {
1.160 www 7431: if ($thisfile=~/\Q$fnamere1\E(\d+)\Q$fnamere2\E$/) {
1.134 albertel 7432: if ($1>$version) { $version=$1; }
7433: }
7434: }
7435: }
7436: closedir(LSDIR);
7437: $version++;
7438: }
7439: }
7440: }
7441: return $version;
1.101 www 7442: }
7443:
7444: sub thisversion {
7445: my $fname=shift;
7446: my $version=-1;
7447: if ($fname=~/\.(\d+)\.\w+(?:\.meta)*$/) {
7448: $version=$1;
7449: }
7450: return $version;
7451: }
7452:
1.84 albertel 7453: sub subscribe {
7454: my ($userinput,$clientip)=@_;
7455: my $result;
1.293 albertel 7456: my ($cmd,$fname)=split(/:/,$userinput,2);
1.84 albertel 7457: my $ownership=&ishome($fname);
7458: if ($ownership eq 'owner') {
1.101 www 7459: # explitly asking for the current version?
7460: unless (-e $fname) {
7461: my $currentversion=¤tversion($fname);
7462: if (&thisversion($fname)==$currentversion) {
7463: if ($fname=~/^(.+)\.\d+\.(\w+(?:\.meta)*)$/) {
7464: my $root=$1;
7465: my $extension=$2;
7466: symlink($root.'.'.$extension,
7467: $root.'.'.$currentversion.'.'.$extension);
1.102 www 7468: unless ($extension=~/\.meta$/) {
7469: symlink($root.'.'.$extension.'.meta',
7470: $root.'.'.$currentversion.'.'.$extension.'.meta');
7471: }
1.101 www 7472: }
7473: }
7474: }
1.84 albertel 7475: if (-e $fname) {
7476: if (-d $fname) {
7477: $result="directory\n";
7478: } else {
1.161 foxr 7479: if (-e "$fname.$clientname") {&unsub($fname,$clientip);}
1.134 albertel 7480: my $now=time;
1.161 foxr 7481: my $found=&addline($fname,$clientname,$clientip,
7482: "$clientname:$clientip:$now\n");
1.84 albertel 7483: if ($found) { $result="$fname\n"; }
7484: # if they were subscribed to only meta data, delete that
7485: # subscription, when you subscribe to a file you also get
7486: # the metadata
7487: unless ($fname=~/\.meta$/) { &unsub("$fname.meta",$clientip); }
7488: $fname=~s/\/home\/httpd\/html\/res/raw/;
1.476 raeburn 7489: my $protocol = $Apache::lonnet::protocol{$perlvar{'lonHostID'}};
7490: $protocol = 'http' if ($protocol ne 'https');
7491: $fname=$protocol.'://'.&Apache::lonnet::hostname($perlvar{'lonHostID'})."/".$fname;
1.84 albertel 7492: $result="$fname\n";
7493: }
7494: } else {
7495: $result="not_found\n";
7496: }
7497: } else {
7498: $result="rejected\n";
7499: }
7500: return $result;
7501: }
1.287 foxr 7502: # Change the passwd of a unix user. The caller must have
7503: # first verified that the user is a loncapa user.
7504: #
7505: # Parameters:
7506: # user - Unix user name to change.
7507: # pass - New password for the user.
7508: # Returns:
7509: # ok - if success
7510: # other - Some meaningfule error message string.
7511: # NOTE:
7512: # invokes a setuid script to change the passwd.
7513: sub change_unix_password {
7514: my ($user, $pass) = @_;
7515:
7516: &Debug("change_unix_password");
7517: my $execdir=$perlvar{'lonDaemons'};
7518: &Debug("Opening lcpasswd pipeline");
7519: my $pf = IO::File->new("|$execdir/lcpasswd > "
7520: ."$perlvar{'lonDaemons'}"
7521: ."/logs/lcpasswd.log");
7522: print $pf "$user\n$pass\n$pass\n";
7523: close $pf;
7524: my $err = $?;
7525: return ($err < @passwderrors) ? $passwderrors[$err] :
7526: "pwchange_falure - unknown error";
7527:
7528:
7529: }
7530:
1.91 albertel 7531:
7532: sub make_passwd_file {
1.483 www 7533: my ($uname,$udom,$umode,$npass,$passfilename)=@_;
1.390 raeburn 7534: my $result="ok";
1.91 albertel 7535: if ($umode eq 'krb4' or $umode eq 'krb5') {
7536: {
7537: my $pf = IO::File->new(">$passfilename");
1.261 foxr 7538: if ($pf) {
7539: print $pf "$umode:$npass\n";
7540: } else {
7541: $result = "pass_file_failed_error";
7542: }
1.91 albertel 7543: }
7544: } elsif ($umode eq 'internal') {
7545: my $salt=time;
7546: $salt=substr($salt,6,2);
7547: my $ncpass=crypt($npass,$salt);
7548: {
7549: &Debug("Creating internal auth");
7550: my $pf = IO::File->new(">$passfilename");
1.261 foxr 7551: if($pf) {
7552: print $pf "internal:$ncpass\n";
7553: } else {
7554: $result = "pass_file_failed_error";
7555: }
1.91 albertel 7556: }
7557: } elsif ($umode eq 'localauth') {
7558: {
7559: my $pf = IO::File->new(">$passfilename");
1.261 foxr 7560: if($pf) {
7561: print $pf "localauth:$npass\n";
7562: } else {
7563: $result = "pass_file_failed_error";
7564: }
1.91 albertel 7565: }
7566: } elsif ($umode eq 'unix') {
1.502 raeburn 7567: &logthis(">>>Attempt to create unix account blocked -- unix auth not available for new users.");
7568: $result="no_new_unix_accounts";
1.91 albertel 7569: } elsif ($umode eq 'none') {
7570: {
1.223 foxr 7571: my $pf = IO::File->new("> $passfilename");
1.261 foxr 7572: if($pf) {
7573: print $pf "none:\n";
7574: } else {
7575: $result = "pass_file_failed_error";
7576: }
1.91 albertel 7577: }
7578: } else {
1.390 raeburn 7579: $result="auth_mode_error";
1.91 albertel 7580: }
7581: return $result;
1.121 albertel 7582: }
7583:
1.265 albertel 7584: sub convert_photo {
7585: my ($start,$dest)=@_;
7586: system("convert $start $dest");
7587: }
7588:
1.121 albertel 7589: sub sethost {
7590: my ($remotereq) = @_;
7591: my (undef,$hostid)=split(/:/,$remotereq);
1.322 albertel 7592: # ignore sethost if we are already correct
7593: if ($hostid eq $currenthostid) {
7594: return 'ok';
7595: }
7596:
1.121 albertel 7597: if (!defined($hostid)) { $hostid=$perlvar{'lonHostID'}; }
1.368 albertel 7598: if (&Apache::lonnet::get_host_ip($perlvar{'lonHostID'})
7599: eq &Apache::lonnet::get_host_ip($hostid)) {
1.200 matthew 7600: $currenthostid =$hostid;
1.369 albertel 7601: $currentdomainid=&Apache::lonnet::host_domain($hostid);
1.443 www 7602: # &logthis("Setting hostid to $hostid, and domain to $currentdomainid");
1.121 albertel 7603: } else {
7604: &logthis("Requested host id $hostid not an alias of ".
7605: $perlvar{'lonHostID'}." refusing connection");
7606: return 'unable_to_set';
7607: }
7608: return 'ok';
7609: }
7610:
7611: sub version {
7612: my ($userinput)=@_;
7613: $remoteVERSION=(split(/:/,$userinput))[1];
7614: return "version:$VERSION";
1.127 albertel 7615: }
1.178 foxr 7616:
1.447 raeburn 7617: sub get_usersession_config {
7618: my ($dom,$name) = @_;
7619: my ($usersessionconf,$cached)=&Apache::lonnet::is_cached_new($name,$dom);
7620: if (defined($cached)) {
7621: return $usersessionconf;
7622: } else {
7623: my %domconfig = &Apache::lonnet::get_dom('configuration',['usersessions'],$dom);
7624: if (ref($domconfig{'usersessions'}) eq 'HASH') {
7625: &Apache::lonnet::do_cache_new($name,$dom,$domconfig{'usersessions'},3600);
7626: return $domconfig{'usersessions'};
7627: }
7628: }
7629: return;
7630: }
1.200 matthew 7631:
1.453 raeburn 7632:
7633:
1.450 raeburn 7634:
1.471 raeburn 7635: sub distro_and_arch {
7636: return $dist.':'.$arch;
7637: }
7638:
1.61 harris41 7639: # ----------------------------------- POD (plain old documentation, CPAN style)
7640:
7641: =head1 NAME
7642:
7643: lond - "LON Daemon" Server (port "LOND" 5663)
7644:
7645: =head1 SYNOPSIS
7646:
1.74 harris41 7647: Usage: B<lond>
7648:
7649: Should only be run as user=www. This is a command-line script which
7650: is invoked by B<loncron>. There is no expectation that a typical user
7651: will manually start B<lond> from the command-line. (In other words,
7652: DO NOT START B<lond> YOURSELF.)
1.61 harris41 7653:
7654: =head1 DESCRIPTION
7655:
1.74 harris41 7656: There are two characteristics associated with the running of B<lond>,
7657: PROCESS MANAGEMENT (starting, stopping, handling child processes)
7658: and SERVER-SIDE ACTIVITIES (password authentication, user creation,
7659: subscriptions, etc). These are described in two large
7660: sections below.
7661:
7662: B<PROCESS MANAGEMENT>
7663:
1.61 harris41 7664: Preforker - server who forks first. Runs as a daemon. HUPs.
7665: Uses IDEA encryption
7666:
1.74 harris41 7667: B<lond> forks off children processes that correspond to the other servers
7668: in the network. Management of these processes can be done at the
7669: parent process level or the child process level.
7670:
7671: B<logs/lond.log> is the location of log messages.
7672:
7673: The process management is now explained in terms of linux shell commands,
7674: subroutines internal to this code, and signal assignments:
7675:
7676: =over 4
7677:
7678: =item *
7679:
7680: PID is stored in B<logs/lond.pid>
7681:
7682: This is the process id number of the parent B<lond> process.
7683:
7684: =item *
7685:
7686: SIGTERM and SIGINT
7687:
7688: Parent signal assignment:
7689: $SIG{INT} = $SIG{TERM} = \&HUNTSMAN;
7690:
7691: Child signal assignment:
7692: $SIG{INT} = 'DEFAULT'; (and SIGTERM is DEFAULT also)
7693: (The child dies and a SIGALRM is sent to parent, awaking parent from slumber
7694: to restart a new child.)
7695:
7696: Command-line invocations:
7697: B<kill> B<-s> SIGTERM I<PID>
7698: B<kill> B<-s> SIGINT I<PID>
7699:
7700: Subroutine B<HUNTSMAN>:
7701: This is only invoked for the B<lond> parent I<PID>.
7702: This kills all the children, and then the parent.
7703: The B<lonc.pid> file is cleared.
7704:
7705: =item *
7706:
7707: SIGHUP
7708:
7709: Current bug:
7710: This signal can only be processed the first time
7711: on the parent process. Subsequent SIGHUP signals
7712: have no effect.
7713:
7714: Parent signal assignment:
7715: $SIG{HUP} = \&HUPSMAN;
7716:
7717: Child signal assignment:
7718: none (nothing happens)
7719:
7720: Command-line invocations:
7721: B<kill> B<-s> SIGHUP I<PID>
7722:
7723: Subroutine B<HUPSMAN>:
7724: This is only invoked for the B<lond> parent I<PID>,
7725: This kills all the children, and then the parent.
7726: The B<lond.pid> file is cleared.
7727:
7728: =item *
7729:
7730: SIGUSR1
7731:
7732: Parent signal assignment:
7733: $SIG{USR1} = \&USRMAN;
7734:
7735: Child signal assignment:
7736: $SIG{USR1}= \&logstatus;
7737:
7738: Command-line invocations:
7739: B<kill> B<-s> SIGUSR1 I<PID>
7740:
7741: Subroutine B<USRMAN>:
7742: When invoked for the B<lond> parent I<PID>,
7743: SIGUSR1 is sent to all the children, and the status of
7744: each connection is logged.
1.144 foxr 7745:
7746: =item *
7747:
7748: SIGUSR2
7749:
7750: Parent Signal assignment:
7751: $SIG{USR2} = \&UpdateHosts
7752:
7753: Child signal assignment:
7754: NONE
7755:
1.74 harris41 7756:
7757: =item *
7758:
7759: SIGCHLD
7760:
7761: Parent signal assignment:
7762: $SIG{CHLD} = \&REAPER;
7763:
7764: Child signal assignment:
7765: none
7766:
7767: Command-line invocations:
7768: B<kill> B<-s> SIGCHLD I<PID>
7769:
7770: Subroutine B<REAPER>:
7771: This is only invoked for the B<lond> parent I<PID>.
7772: Information pertaining to the child is removed.
7773: The socket port is cleaned up.
7774:
7775: =back
7776:
7777: B<SERVER-SIDE ACTIVITIES>
7778:
7779: Server-side information can be accepted in an encrypted or non-encrypted
7780: method.
7781:
7782: =over 4
7783:
7784: =item ping
7785:
7786: Query a client in the hosts.tab table; "Are you there?"
7787:
7788: =item pong
7789:
7790: Respond to a ping query.
7791:
7792: =item ekey
7793:
7794: Read in encrypted key, make cipher. Respond with a buildkey.
7795:
7796: =item load
7797:
7798: Respond with CPU load based on a computation upon /proc/loadavg.
7799:
7800: =item currentauth
7801:
7802: Reply with current authentication information (only over an
7803: encrypted channel).
7804:
7805: =item auth
7806:
7807: Only over an encrypted channel, reply as to whether a user's
7808: authentication information can be validated.
7809:
7810: =item passwd
7811:
7812: Allow for a password to be set.
7813:
7814: =item makeuser
7815:
7816: Make a user.
7817:
1.517 ! raeburn 7818: =item changeuserauth
1.74 harris41 7819:
7820: Allow for authentication mechanism and password to be changed.
7821:
7822: =item home
1.61 harris41 7823:
1.74 harris41 7824: Respond to a question "are you the home for a given user?"
7825:
7826: =item update
7827:
7828: Update contents of a subscribed resource.
7829:
7830: =item unsubscribe
7831:
7832: The server is unsubscribing from a resource.
7833:
7834: =item subscribe
7835:
7836: The server is subscribing to a resource.
7837:
7838: =item log
7839:
7840: Place in B<logs/lond.log>
7841:
7842: =item put
7843:
7844: stores hash in namespace
7845:
1.496 raeburn 7846: =item rolesput
1.74 harris41 7847:
7848: put a role into a user's environment
7849:
7850: =item get
7851:
7852: returns hash with keys from array
7853: reference filled in from namespace
7854:
7855: =item eget
7856:
7857: returns hash with keys from array
7858: reference filled in from namesp (encrypts the return communication)
7859:
7860: =item rolesget
7861:
7862: get a role from a user's environment
7863:
7864: =item del
7865:
7866: deletes keys out of array from namespace
7867:
7868: =item keys
7869:
7870: returns namespace keys
7871:
7872: =item dump
7873:
7874: dumps the complete (or key matching regexp) namespace into a hash
7875:
7876: =item store
7877:
7878: stores hash permanently
7879: for this url; hashref needs to be given and should be a \%hashname; the
7880: remaining args aren't required and if they aren't passed or are '' they will
7881: be derived from the ENV
7882:
7883: =item restore
7884:
7885: returns a hash for a given url
7886:
7887: =item querysend
7888:
7889: Tells client about the lonsql process that has been launched in response
7890: to a sent query.
7891:
7892: =item queryreply
7893:
7894: Accept information from lonsql and make appropriate storage in temporary
7895: file space.
7896:
7897: =item idput
7898:
7899: Defines usernames as corresponding to IDs. (These "IDs" are unique identifiers
7900: for each student, defined perhaps by the institutional Registrar.)
7901:
7902: =item idget
7903:
7904: Returns usernames corresponding to IDs. (These "IDs" are unique identifiers
7905: for each student, defined perhaps by the institutional Registrar.)
7906:
1.517 ! raeburn 7907: =item iddel
! 7908:
! 7909: Deletes one or more ids in a domain's id database.
! 7910:
1.74 harris41 7911: =item tmpput
7912:
7913: Accept and store information in temporary space.
7914:
7915: =item tmpget
7916:
7917: Send along temporarily stored information.
7918:
7919: =item ls
7920:
7921: List part of a user's directory.
7922:
1.135 foxr 7923: =item pushtable
7924:
7925: Pushes a file in /home/httpd/lonTab directory. Currently limited to:
7926: hosts.tab and domain.tab. The old file is copied to *.tab.backup but
7927: must be restored manually in case of a problem with the new table file.
7928: pushtable requires that the request be encrypted and validated via
7929: ValidateManager. The form of the command is:
7930: enc:pushtable tablename <tablecontents> \n
7931: where pushtable, tablename and <tablecontents> will be encrypted, but \n is a
7932: cleartext newline.
7933:
1.74 harris41 7934: =item Hanging up (exit or init)
7935:
7936: What to do when a client tells the server that they (the client)
7937: are leaving the network.
7938:
7939: =item unknown command
7940:
7941: If B<lond> is sent an unknown command (not in the list above),
7942: it replys to the client "unknown_cmd".
1.135 foxr 7943:
1.74 harris41 7944:
7945: =item UNKNOWN CLIENT
7946:
7947: If the anti-spoofing algorithm cannot verify the client,
7948: the client is rejected (with a "refused" message sent
7949: to the client, and the connection is closed.
7950:
7951: =back
1.61 harris41 7952:
7953: =head1 PREREQUISITES
7954:
7955: IO::Socket
7956: IO::File
7957: Apache::File
7958: POSIX
7959: Crypt::IDEA
7960: LWP::UserAgent()
7961: GDBM_File
7962: Authen::Krb4
1.91 albertel 7963: Authen::Krb5
1.61 harris41 7964:
7965: =head1 COREQUISITES
7966:
1.490 droeschl 7967: none
7968:
1.61 harris41 7969: =head1 OSNAMES
7970:
7971: linux
7972:
7973: =head1 SCRIPT CATEGORIES
7974:
7975: Server/Process
7976:
7977: =cut
1.409 foxr 7978:
7979:
7980: =pod
7981:
7982: =head1 LOG MESSAGES
7983:
7984: The messages below can be emitted in the lond log. This log is located
7985: in ~httpd/perl/logs/lond.log Many log messages have HTML encapsulation
7986: to provide coloring if examined from inside a web page. Some do not.
7987: Where color is used, the colors are; Red for sometihhng to get excited
7988: about and to follow up on. Yellow for something to keep an eye on to
7989: be sure it does not get worse, Green,and Blue for informational items.
7990:
7991: In the discussions below, sometimes reference is made to ~httpd
7992: when describing file locations. There isn't really an httpd
7993: user, however there is an httpd directory that gets installed in the
7994: place that user home directories go. On linux, this is usually
7995: (always?) /home/httpd.
7996:
7997:
7998: Some messages are colorless. These are usually (not always)
7999: Green/Blue color level messages.
8000:
8001: =over 2
8002:
8003: =item (Red) LocalConnection rejecting non local: <ip> ne 127.0.0.1
8004:
8005: A local connection negotiation was attempted by
8006: a host whose IP address was not 127.0.0.1.
8007: The socket is closed and the child will exit.
8008: lond has three ways to establish an encyrption
8009: key with a client:
8010:
8011: =over 2
8012:
8013: =item local
8014:
8015: The key is written and read from a file.
8016: This is only valid for connections from localhost.
8017:
8018: =item insecure
8019:
8020: The key is generated by the server and
8021: transmitted to the client.
8022:
8023: =item ssl (secure)
8024:
8025: An ssl connection is negotiated with the client,
8026: the key is generated by the server and sent to the
8027: client across this ssl connection before the
8028: ssl connectionis terminated and clear text
8029: transmission resumes.
8030:
8031: =back
8032:
8033: =item (Red) LocalConnection: caller is insane! init = <init> and type = <type>
8034:
8035: The client is local but has not sent an initialization
8036: string that is the literal "init:local" The connection
8037: is closed and the child exits.
8038:
8039: =item Red CRITICAL Can't get key file <error>
8040:
8041: SSL key negotiation is being attempted but the call to
8042: lonssl::KeyFile failed. This usually means that the
8043: configuration file is not correctly defining or protecting
8044: the directories/files lonCertificateDirectory or
8045: lonnetPrivateKey
8046: <error> is a string that describes the reason that
8047: the key file could not be located.
8048:
8049: =item (Red) CRITICAL Can't get certificates <error>
8050:
8051: SSL key negotiation failed because we were not able to retrives our certificate
8052: or the CA's certificate in the call to lonssl::CertificateFile
8053: <error> is the textual reason this failed. Usual reasons:
8054:
8055: =over 2
1.490 droeschl 8056:
1.409 foxr 8057: =item Apache config file for loncapa incorrect:
1.490 droeschl 8058:
1.409 foxr 8059: one of the variables
8060: lonCertificateDirectory, lonnetCertificateAuthority, or lonnetCertificate
8061: undefined or incorrect
8062:
8063: =item Permission error:
8064:
8065: The directory pointed to by lonCertificateDirectory is not readable by lond
8066:
8067: =item Permission error:
8068:
8069: Files in the directory pointed to by lonCertificateDirectory are not readable by lond.
8070:
8071: =item Installation error:
8072:
8073: Either the certificate authority file or the certificate have not
8074: been installed in lonCertificateDirectory.
8075:
8076: =item (Red) CRITICAL SSL Socket promotion failed: <err>
8077:
8078: The promotion of the connection from plaintext to SSL failed
8079: <err> is the reason for the failure. There are two
8080: system calls involved in the promotion (one of which failed),
8081: a dup to produce
8082: a second fd on the raw socket over which the encrypted data
8083: will flow and IO::SOcket::SSL->new_from_fd which creates
8084: the SSL connection on the duped fd.
8085:
8086: =item (Blue) WARNING client did not respond to challenge
8087:
8088: This occurs on an insecure (non SSL) connection negotiation request.
8089: lond generates some number from the time, the PID and sends it to
8090: the client. The client must respond by echoing this information back.
8091: If the client does not do so, that's a violation of the challenge
8092: protocols and the connection will be failed.
8093:
8094: =item (Red) No manager table. Nobody can manage!!
8095:
8096: lond has the concept of privileged hosts that
8097: can perform remote management function such
8098: as update the hosts.tab. The manager hosts
8099: are described in the
8100: ~httpd/lonTabs/managers.tab file.
8101: this message is logged if this file is missing.
8102:
8103:
8104: =item (Green) Registering manager <dnsname> as <cluster_name> with <ipaddress>
8105:
8106: Reports the successful parse and registration
8107: of a specific manager.
8108:
8109: =item Green existing host <clustername:dnsname>
8110:
8111: The manager host is already defined in the hosts.tab
8112: the information in that table, rather than the info in the
8113: manager table will be used to determine the manager's ip.
8114:
8115: =item (Red) Unable to craete <filename>
8116:
8117: lond has been asked to create new versions of an administrative
8118: file (by a manager). When this is done, the new file is created
8119: in a temp file and then renamed into place so that there are always
8120: usable administrative files, even if the update fails. This failure
8121: message means that the temp file could not be created.
8122: The update is abandoned, and the old file is available for use.
8123:
8124: =item (Green) CopyFile from <oldname> to <newname> failed
8125:
8126: In an update of administrative files, the copy of the existing file to a
8127: backup file failed. The installation of the new file may still succeed,
8128: but there will not be a back up file to rever to (this should probably
8129: be yellow).
8130:
8131: =item (Green) Pushfile: backed up <oldname> to <newname>
8132:
8133: See above, the backup of the old administrative file succeeded.
8134:
8135: =item (Red) Pushfile: Unable to install <filename> <reason>
8136:
8137: The new administrative file could not be installed. In this case,
8138: the old administrative file is still in use.
8139:
8140: =item (Green) Installed new < filename>.
8141:
8142: The new administrative file was successfullly installed.
8143:
8144: =item (Red) Reinitializing lond pid=<pid>
8145:
8146: The lonc child process <pid> will be sent a USR2
8147: signal.
8148:
8149: =item (Red) Reinitializing self
8150:
8151: We've been asked to re-read our administrative files,and
8152: are doing so.
8153:
8154: =item (Yellow) error:Invalid process identifier <ident>
8155:
8156: A reinit command was received, but the target part of the
8157: command was not valid. It must be either
8158: 'lond' or 'lonc' but was <ident>
8159:
8160: =item (Green) isValideditCommand checking: Command = <command> Key = <key> newline = <newline>
8161:
8162: Checking to see if lond has been handed a valid edit
8163: command. It is possible the edit command is not valid
8164: in that case there are no log messages to indicate that.
8165:
8166: =item Result of password change for <username> pwchange_success
8167:
8168: The password for <username> was
8169: successfully changed.
8170:
8171: =item Unable to open <user> passwd to change password
8172:
8173: Could not rewrite the
8174: internal password file for a user
8175:
8176: =item Result of password change for <user> : <result>
1.490 droeschl 8177:
1.409 foxr 8178: A unix password change for <user> was attempted
8179: and the pipe returned <result>
8180:
8181: =item LWP GET: <message> for <fname> (<remoteurl>)
8182:
8183: The lightweight process fetch for a resource failed
8184: with <message> the local filename that should
8185: have existed/been created was <fname> the
8186: corresponding URI: <remoteurl> This is emitted in several
8187: places.
8188:
8189: =item Unable to move <transname> to <destname>
8190:
8191: From fetch_user_file_handler - the user file was replicated but could not
8192: be mv'd to its final location.
8193:
8194: =item Looking for <domain> <username>
8195:
8196: From user_has_session_handler - This should be a Debug call instead
8197: it indicates lond is about to check whether the specified user has a
8198: session active on the specified domain on the local host.
8199:
8200: =item Client <ip> (<name>) hanging up: <input>
8201:
8202: lond has been asked to exit by its client. The <ip> and <name> identify the
8203: client systemand <input> is the full exit command sent to the server.
8204:
8205: =item Red CRITICAL: ABNORMAL EXIT. child <pid> for server <hostname> died through a crass with this error->[<message>].
1.490 droeschl 8206:
1.409 foxr 8207: A lond child terminated. NOte that this termination can also occur when the
8208: child receives the QUIT or DIE signals. <pid> is the process id of the child,
8209: <hostname> the host lond is working for, and <message> the reason the child died
8210: to the best of our ability to get it (I would guess that any numeric value
8211: represents and errno value). This is immediately followed by
8212:
8213: =item Famous last words: Catching exception - <log>
8214:
8215: Where log is some recent information about the state of the child.
8216:
8217: =item Red CRITICAL: TIME OUT <pid>
8218:
8219: Some timeout occured for server <pid>. THis is normally a timeout on an LWP
8220: doing an HTTP::GET.
8221:
8222: =item child <pid> died
8223:
8224: The reaper caught a SIGCHILD for the lond child process <pid>
8225: This should be modified to also display the IP of the dying child
8226: $children{$pid}
8227:
8228: =item Unknown child 0 died
8229: A child died but the wait for it returned a pid of zero which really should not
8230: ever happen.
8231:
8232: =item Child <which> - <pid> looks like we missed it's death
8233:
8234: When a sigchild is received, the reaper process checks all children to see if they are
8235: alive. If children are dying quite quickly, the lack of signal queuing can mean
8236: that a signal hearalds the death of more than one child. If so this message indicates
8237: which other one died. <which> is the ip of a dead child
8238:
8239: =item Free socket: <shutdownretval>
8240:
8241: The HUNTSMAN sub was called due to a SIGINT in a child process. The socket is being shutdown.
8242: for whatever reason, <shutdownretval> is printed but in fact shutdown() is not documented
8243: to return anything. This is followed by:
8244:
8245: =item Red CRITICAL: Shutting down
8246:
8247: Just prior to exit.
8248:
8249: =item Free socket: <shutdownretval>
8250:
8251: The HUPSMAN sub was called due to a SIGHUP. all children get killsed, and lond execs itself.
8252: This is followed by:
8253:
8254: =item (Red) CRITICAL: Restarting
8255:
8256: lond is about to exec itself to restart.
8257:
8258: =item (Blue) Updating connections
8259:
8260: (In response to a USR2). All the children (except the one for localhost)
8261: are about to be killed, the hosts tab reread, and Apache reloaded via apachereload.
8262:
8263: =item (Blue) UpdateHosts killing child <pid> for ip <ip>
8264:
8265: Due to USR2 as above.
8266:
8267: =item (Green) keeping child for ip <ip> (pid = <pid>)
8268:
8269: In response to USR2 as above, the child indicated is not being restarted because
8270: it's assumed that we'll always need a child for the localhost.
8271:
8272:
8273: =item Going to check on the children
8274:
8275: Parent is about to check on the health of the child processes.
8276: Note that this is in response to a USR1 sent to the parent lond.
8277: there may be one or more of the next two messages:
8278:
8279: =item <pid> is dead
8280:
8281: A child that we have in our child hash as alive has evidently died.
8282:
8283: =item Child <pid> did not respond
8284:
8285: In the health check the child <pid> did not update/produce a pid_.txt
8286: file when sent it's USR1 signal. That process is killed with a 9 signal, as it's
8287: assumed to be hung in some un-fixable way.
8288:
8289: =item Finished checking children
1.490 droeschl 8290:
1.409 foxr 8291: Master processs's USR1 processing is cojmplete.
8292:
8293: =item (Red) CRITICAL: ------- Starting ------
8294:
8295: (There are more '-'s on either side). Lond has forked itself off to
8296: form a new session and is about to start actual initialization.
8297:
8298: =item (Green) Attempting to start child (<client>)
8299:
8300: Started a new child process for <client>. Client is IO::Socket object
8301: connected to the child. This was as a result of a TCP/IP connection from a client.
8302:
8303: =item Unable to determine who caller was, getpeername returned nothing
1.490 droeschl 8304:
1.409 foxr 8305: In child process initialization. either getpeername returned undef or
8306: a zero sized object was returned. Processing continues, but in my opinion,
8307: this should be cause for the child to exit.
8308:
8309: =item Unable to determine clientip
8310:
8311: In child process initialization. The peer address from getpeername was not defined.
8312: The client address is stored as "Unavailable" and processing continues.
8313:
8314: =item (Yellow) INFO: Connection <ip> <name> connection type = <type>
1.490 droeschl 8315:
1.409 foxr 8316: In child initialization. A good connectionw as received from <ip>.
8317:
8318: =over 2
8319:
8320: =item <name>
8321:
8322: is the name of the client from hosts.tab.
8323:
8324: =item <type>
8325:
8326: Is the connection type which is either
8327:
8328: =over 2
8329:
8330: =item manager
8331:
8332: The connection is from a manager node, not in hosts.tab
8333:
8334: =item client
8335:
8336: the connection is from a non-manager in the hosts.tab
8337:
8338: =item both
8339:
8340: The connection is from a manager in the hosts.tab.
8341:
8342: =back
8343:
8344: =back
8345:
8346: =item (Blue) Certificates not installed -- trying insecure auth
8347:
8348: One of the certificate file, key file or
8349: certificate authority file could not be found for a client attempting
8350: SSL connection intiation. COnnection will be attemptied in in-secure mode.
8351: (this would be a system with an up to date lond that has not gotten a
8352: certificate from us).
8353:
8354: =item (Green) Successful local authentication
8355:
8356: A local connection successfully negotiated the encryption key.
8357: In this case the IDEA key is in a file (that is hopefully well protected).
8358:
8359: =item (Green) Successful ssl authentication with <client>
8360:
8361: The client (<client> is the peer's name in hosts.tab), has successfully
8362: negotiated an SSL connection with this child process.
8363:
8364: =item (Green) Successful insecure authentication with <client>
1.490 droeschl 8365:
1.409 foxr 8366:
8367: The client has successfully negotiated an insecure connection withthe child process.
8368:
8369: =item (Yellow) Attempted insecure connection disallowed
8370:
8371: The client attempted and failed to successfully negotiate a successful insecure
8372: connection. This can happen either because the variable londAllowInsecure is false
8373: or undefined, or becuse the child did not successfully echo back the challenge
8374: string.
8375:
8376:
8377: =back
8378:
1.441 raeburn 8379: =back
8380:
1.409 foxr 8381:
8382: =cut
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