Annotation of loncom/lond, revision 1.467.2.2
1.1 albertel 1: #!/usr/bin/perl
2: # The LearningOnline Network
3: # lond "LON Daemon" Server (port "LOND" 5663)
1.60 www 4: #
1.467.2.2! raeburn 5: # $Id: lond,v 1.467.2.1 2011/01/25 09:39:42 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
18: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19: # GNU General Public License for more details.
20: #
21: # You should have received a copy of the GNU General Public License
22: # along with LON-CAPA; if not, write to the Free Software
1.178 foxr 23: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
1.60 www 24: #
25: # /home/httpd/html/adm/gpl.txt
26: #
1.161 foxr 27:
28:
1.60 www 29: # http://www.lon-capa.org/
30: #
1.54 harris41 31:
1.134 albertel 32: use strict;
1.80 harris41 33: use lib '/home/httpd/lib/perl/';
1.325 albertel 34: use LONCAPA;
1.80 harris41 35: use LONCAPA::Configuration;
36:
1.1 albertel 37: use IO::Socket;
38: use IO::File;
1.126 albertel 39: #use Apache::File;
1.1 albertel 40: use POSIX;
41: use Crypt::IDEA;
42: use LWP::UserAgent();
1.347 raeburn 43: use Digest::MD5 qw(md5_hex);
1.3 www 44: use GDBM_File;
1.91 albertel 45: use Authen::Krb5;
1.49 albertel 46: use localauth;
1.193 raeburn 47: use localenroll;
1.265 albertel 48: use localstudentphoto;
1.143 foxr 49: use File::Copy;
1.292 albertel 50: use File::Find;
1.200 matthew 51: use LONCAPA::lonlocal;
52: use LONCAPA::lonssl;
1.221 albertel 53: use Fcntl qw(:flock);
1.383 raeburn 54: use Apache::lonnet;
1.1 albertel 55:
1.463 foxr 56: my $DEBUG = 0; # Non zero to enable debug log entries.
1.77 foxr 57:
1.57 www 58: my $status='';
59: my $lastlog='';
60:
1.467.2.2! raeburn 61: my $VERSION='$Revision: 1.467.2.1 $'; #' stupid emacs
1.121 albertel 62: my $remoteVERSION;
1.214 foxr 63: my $currenthostid="default";
1.115 albertel 64: my $currentdomainid;
1.134 albertel 65:
66: my $client;
1.200 matthew 67: my $clientip; # IP address of client.
68: my $clientname; # LonCAPA name of client.
1.448 raeburn 69: my $clientversion; # LonCAPA version running on client.
70: my $clienthomedom; # LonCAPA domain of homeID for client.
71: # primary library server.
1.140 foxr 72:
1.134 albertel 73: my $server;
1.200 matthew 74:
75: my $keymode;
1.198 foxr 76:
1.207 foxr 77: my $cipher; # Cipher key negotiated with client
78: my $tmpsnum = 0; # Id of tmpputs.
79:
1.178 foxr 80: #
81: # Connection type is:
82: # client - All client actions are allowed
83: # manager - only management functions allowed.
84: # both - Both management and client actions are allowed
85: #
1.161 foxr 86:
1.178 foxr 87: my $ConnectionType;
1.161 foxr 88:
1.178 foxr 89: my %managers; # Ip -> manager names
1.161 foxr 90:
1.178 foxr 91: my %perlvar; # Will have the apache conf defined perl vars.
1.134 albertel 92:
1.178 foxr 93: #
1.207 foxr 94: # The hash below is used for command dispatching, and is therefore keyed on the request keyword.
95: # Each element of the hash contains a reference to an array that contains:
96: # A reference to a sub that executes the request corresponding to the keyword.
97: # A flag that is true if the request must be encoded to be acceptable.
98: # A mask with bits as follows:
99: # CLIENT_OK - Set when the function is allowed by ordinary clients
100: # MANAGER_OK - Set when the function is allowed to manager clients.
101: #
102: my $CLIENT_OK = 1;
103: my $MANAGER_OK = 2;
104: my %Dispatcher;
105:
106:
107: #
1.178 foxr 108: # The array below are password error strings."
109: #
110: my $lastpwderror = 13; # Largest error number from lcpasswd.
111: my @passwderrors = ("ok",
1.287 foxr 112: "pwchange_failure - lcpasswd must be run as user 'www'",
113: "pwchange_failure - lcpasswd got incorrect number of arguments",
114: "pwchange_failure - lcpasswd did not get the right nubmer of input text lines",
115: "pwchange_failure - lcpasswd too many simultaneous pwd changes in progress",
116: "pwchange_failure - lcpasswd User does not exist.",
117: "pwchange_failure - lcpasswd Incorrect current passwd",
118: "pwchange_failure - lcpasswd Unable to su to root.",
119: "pwchange_failure - lcpasswd Cannot set new passwd.",
120: "pwchange_failure - lcpasswd Username has invalid characters",
121: "pwchange_failure - lcpasswd Invalid characters in password",
122: "pwchange_failure - lcpasswd User already exists",
123: "pwchange_failure - lcpasswd Something went wrong with user addition.",
124: "pwchange_failure - lcpasswd Password mismatch",
125: "pwchange_failure - lcpasswd Error filename is invalid");
1.97 foxr 126:
127:
1.178 foxr 128: # The array below are lcuseradd error strings.:
1.97 foxr 129:
1.178 foxr 130: my $lastadderror = 13;
131: my @adderrors = ("ok",
132: "User ID mismatch, lcuseradd must run as user www",
133: "lcuseradd Incorrect number of command line parameters must be 3",
134: "lcuseradd Incorrect number of stdinput lines, must be 3",
135: "lcuseradd Too many other simultaneous pwd changes in progress",
136: "lcuseradd User does not exist",
137: "lcuseradd Unable to make www member of users's group",
138: "lcuseradd Unable to su to root",
139: "lcuseradd Unable to set password",
1.377 albertel 140: "lcuseradd Username has invalid characters",
1.178 foxr 141: "lcuseradd Password has an invalid character",
142: "lcuseradd User already exists",
143: "lcuseradd Could not add user.",
144: "lcuseradd Password mismatch");
1.97 foxr 145:
1.96 foxr 146:
1.412 foxr 147: # This array are the errors from lcinstallfile:
148:
149: my @installerrors = ("ok",
150: "Initial user id of client not that of www",
151: "Usage error, not enough command line arguments",
152: "Source file name does not exist",
153: "Destination file name does not exist",
154: "Some file operation failed",
155: "Invalid table filename."
156: );
1.207 foxr 157:
158: #
159: # Statistics that are maintained and dislayed in the status line.
160: #
1.212 foxr 161: my $Transactions = 0; # Number of attempted transactions.
162: my $Failures = 0; # Number of transcations failed.
1.207 foxr 163:
164: # ResetStatistics:
165: # Resets the statistics counters:
166: #
167: sub ResetStatistics {
168: $Transactions = 0;
169: $Failures = 0;
170: }
171:
1.200 matthew 172: #------------------------------------------------------------------------
173: #
174: # LocalConnection
175: # Completes the formation of a locally authenticated connection.
176: # This function will ensure that the 'remote' client is really the
177: # local host. If not, the connection is closed, and the function fails.
178: # If so, initcmd is parsed for the name of a file containing the
179: # IDEA session key. The fie is opened, read, deleted and the session
180: # key returned to the caller.
181: #
182: # Parameters:
183: # $Socket - Socket open on client.
184: # $initcmd - The full text of the init command.
185: #
186: # Returns:
187: # IDEA session key on success.
188: # undef on failure.
189: #
190: sub LocalConnection {
191: my ($Socket, $initcmd) = @_;
1.373 albertel 192: Debug("Attempting local connection: $initcmd client: $clientip");
1.277 albertel 193: if($clientip ne "127.0.0.1") {
1.200 matthew 194: &logthis('<font color="red"> LocalConnection rejecting non local: '
1.373 albertel 195: ."$clientip ne 127.0.0.1 </font>");
1.200 matthew 196: close $Socket;
197: return undef;
1.224 foxr 198: } else {
1.200 matthew 199: chomp($initcmd); # Get rid of \n in filename.
200: my ($init, $type, $name) = split(/:/, $initcmd);
201: Debug(" Init command: $init $type $name ");
202:
203: # Require that $init = init, and $type = local: Otherwise
204: # the caller is insane:
205:
206: if(($init ne "init") && ($type ne "local")) {
207: &logthis('<font color = "red"> LocalConnection: caller is insane! '
208: ."init = $init, and type = $type </font>");
209: close($Socket);;
210: return undef;
211:
212: }
213: # Now get the key filename:
214:
215: my $IDEAKey = lonlocal::ReadKeyFile($name);
216: return $IDEAKey;
217: }
218: }
219: #------------------------------------------------------------------------------
220: #
221: # SSLConnection
222: # Completes the formation of an ssh authenticated connection. The
223: # socket is promoted to an ssl socket. If this promotion and the associated
224: # certificate exchange are successful, the IDEA key is generated and sent
225: # to the remote peer via the SSL tunnel. The IDEA key is also returned to
226: # the caller after the SSL tunnel is torn down.
227: #
228: # Parameters:
229: # Name Type Purpose
230: # $Socket IO::Socket::INET Plaintext socket.
231: #
232: # Returns:
233: # IDEA key on success.
234: # undef on failure.
235: #
236: sub SSLConnection {
237: my $Socket = shift;
238:
239: Debug("SSLConnection: ");
240: my $KeyFile = lonssl::KeyFile();
241: if(!$KeyFile) {
242: my $err = lonssl::LastError();
243: &logthis("<font color=\"red\"> CRITICAL"
244: ."Can't get key file $err </font>");
245: return undef;
246: }
247: my ($CACertificate,
248: $Certificate) = lonssl::CertificateFile();
249:
250:
251: # If any of the key, certificate or certificate authority
252: # certificate filenames are not defined, this can't work.
253:
254: if((!$Certificate) || (!$CACertificate)) {
255: my $err = lonssl::LastError();
256: &logthis("<font color=\"red\"> CRITICAL"
257: ."Can't get certificates: $err </font>");
258:
259: return undef;
260: }
261: Debug("Key: $KeyFile CA: $CACertificate Cert: $Certificate");
262:
263: # Indicate to our peer that we can procede with
264: # a transition to ssl authentication:
265:
266: print $Socket "ok:ssl\n";
267:
268: Debug("Approving promotion -> ssl");
269: # And do so:
270:
271: my $SSLSocket = lonssl::PromoteServerSocket($Socket,
272: $CACertificate,
273: $Certificate,
274: $KeyFile);
275: if(! ($SSLSocket) ) { # SSL socket promotion failed.
276: my $err = lonssl::LastError();
277: &logthis("<font color=\"red\"> CRITICAL "
278: ."SSL Socket promotion failed: $err </font>");
279: return undef;
280: }
281: Debug("SSL Promotion successful");
282:
283: #
284: # The only thing we'll use the socket for is to send the IDEA key
285: # to the peer:
286:
287: my $Key = lonlocal::CreateCipherKey();
288: print $SSLSocket "$Key\n";
289:
290: lonssl::Close($SSLSocket);
291:
292: Debug("Key exchange complete: $Key");
293:
294: return $Key;
295: }
296: #
297: # InsecureConnection:
298: # If insecure connections are allowd,
299: # exchange a challenge with the client to 'validate' the
300: # client (not really, but that's the protocol):
301: # We produce a challenge string that's sent to the client.
302: # The client must then echo the challenge verbatim to us.
303: #
304: # Parameter:
305: # Socket - Socket open on the client.
306: # Returns:
307: # 1 - success.
308: # 0 - failure (e.g.mismatch or insecure not allowed).
309: #
310: sub InsecureConnection {
311: my $Socket = shift;
312:
313: # Don't even start if insecure connections are not allowed.
314:
315: if(! $perlvar{londAllowInsecure}) { # Insecure connections not allowed.
316: return 0;
317: }
318:
319: # Fabricate a challenge string and send it..
320:
321: my $challenge = "$$".time; # pid + time.
322: print $Socket "$challenge\n";
323: &status("Waiting for challenge reply");
324:
325: my $answer = <$Socket>;
326: $answer =~s/\W//g;
327: if($challenge eq $answer) {
328: return 1;
1.224 foxr 329: } else {
1.200 matthew 330: logthis("<font color='blue'>WARNING client did not respond to challenge</font>");
331: &status("No challenge reqply");
332: return 0;
333: }
334:
335:
336: }
1.251 foxr 337: #
338: # Safely execute a command (as long as it's not a shel command and doesn
339: # not require/rely on shell escapes. The function operates by doing a
340: # a pipe based fork and capturing stdout and stderr from the pipe.
341: #
342: # Formal Parameters:
343: # $line - A line of text to be executed as a command.
344: # Returns:
345: # The output from that command. If the output is multiline the caller
346: # must know how to split up the output.
347: #
348: #
349: sub execute_command {
350: my ($line) = @_;
351: my @words = split(/\s/, $line); # Bust the command up into words.
352: my $output = "";
353:
354: my $pid = open(CHILD, "-|");
355:
356: if($pid) { # Parent process
357: Debug("In parent process for execute_command");
358: my @data = <CHILD>; # Read the child's outupt...
359: close CHILD;
360: foreach my $output_line (@data) {
361: Debug("Adding $output_line");
362: $output .= $output_line; # Presumably has a \n on it.
363: }
364:
365: } else { # Child process
366: close (STDERR);
367: open (STDERR, ">&STDOUT");# Combine stderr, and stdout...
368: exec(@words); # won't return.
369: }
370: return $output;
371: }
372:
1.200 matthew 373:
1.140 foxr 374: # GetCertificate: Given a transaction that requires a certificate,
375: # this function will extract the certificate from the transaction
376: # request. Note that at this point, the only concept of a certificate
377: # is the hostname to which we are connected.
378: #
379: # Parameter:
380: # request - The request sent by our client (this parameterization may
381: # need to change when we really use a certificate granting
382: # authority.
383: #
384: sub GetCertificate {
385: my $request = shift;
386:
387: return $clientip;
388: }
1.161 foxr 389:
1.178 foxr 390: #
391: # Return true if client is a manager.
392: #
393: sub isManager {
394: return (($ConnectionType eq "manager") || ($ConnectionType eq "both"));
395: }
396: #
397: # Return tru if client can do client functions
398: #
399: sub isClient {
400: return (($ConnectionType eq "client") || ($ConnectionType eq "both"));
401: }
1.161 foxr 402:
403:
1.156 foxr 404: #
405: # ReadManagerTable: Reads in the current manager table. For now this is
406: # done on each manager authentication because:
407: # - These authentications are not frequent
408: # - This allows dynamic changes to the manager table
409: # without the need to signal to the lond.
410: #
411: sub ReadManagerTable {
412:
1.412 foxr 413: &Debug("Reading manager table");
1.156 foxr 414: # Clean out the old table first..
415:
1.166 foxr 416: foreach my $key (keys %managers) {
417: delete $managers{$key};
418: }
419:
420: my $tablename = $perlvar{'lonTabDir'}."/managers.tab";
421: if (!open (MANAGERS, $tablename)) {
422: logthis('<font color="red">No manager table. Nobody can manage!!</font>');
423: return;
424: }
425: while(my $host = <MANAGERS>) {
426: chomp($host);
427: if ($host =~ "^#") { # Comment line.
428: next;
429: }
1.368 albertel 430: if (!defined &Apache::lonnet::get_host_ip($host)) { # This is a non cluster member
1.161 foxr 431: # The entry is of the form:
432: # cluname:hostname
433: # cluname - A 'cluster hostname' is needed in order to negotiate
434: # the host key.
435: # hostname- The dns name of the host.
436: #
1.166 foxr 437: my($cluname, $dnsname) = split(/:/, $host);
438:
439: my $ip = gethostbyname($dnsname);
440: if(defined($ip)) { # bad names don't deserve entry.
441: my $hostip = inet_ntoa($ip);
442: $managers{$hostip} = $cluname;
443: logthis('<font color="green"> registering manager '.
444: "$dnsname as $cluname with $hostip </font>\n");
445: }
446: } else {
447: logthis('<font color="green"> existing host'." $host</font>\n");
1.368 albertel 448: $managers{&Apache::lonnet::get_host_ip($host)} = $host; # Use info from cluster tab if clumemeber
1.166 foxr 449: }
450: }
1.156 foxr 451: }
1.140 foxr 452:
453: #
454: # ValidManager: Determines if a given certificate represents a valid manager.
455: # in this primitive implementation, the 'certificate' is
456: # just the connecting loncapa client name. This is checked
457: # against a valid client list in the configuration.
458: #
459: #
460: sub ValidManager {
461: my $certificate = shift;
462:
1.163 foxr 463: return isManager;
1.140 foxr 464: }
465: #
1.143 foxr 466: # CopyFile: Called as part of the process of installing a
467: # new configuration file. This function copies an existing
468: # file to a backup file.
469: # Parameters:
470: # oldfile - Name of the file to backup.
471: # newfile - Name of the backup file.
472: # Return:
473: # 0 - Failure (errno has failure reason).
474: # 1 - Success.
475: #
476: sub CopyFile {
1.192 foxr 477:
478: my ($oldfile, $newfile) = @_;
1.143 foxr 479:
1.281 matthew 480: if (! copy($oldfile,$newfile)) {
481: return 0;
1.143 foxr 482: }
1.281 matthew 483: chmod(0660, $newfile);
484: return 1;
1.143 foxr 485: }
1.157 foxr 486: #
487: # Host files are passed out with externally visible host IPs.
488: # If, for example, we are behind a fire-wall or NAT host, our
489: # internally visible IP may be different than the externally
490: # visible IP. Therefore, we always adjust the contents of the
491: # host file so that the entry for ME is the IP that we believe
492: # we have. At present, this is defined as the entry that
493: # DNS has for us. If by some chance we are not able to get a
494: # DNS translation for us, then we assume that the host.tab file
495: # is correct.
496: # BUGBUGBUG - in the future, we really should see if we can
497: # easily query the interface(s) instead.
498: # Parameter(s):
499: # contents - The contents of the host.tab to check.
500: # Returns:
501: # newcontents - The adjusted contents.
502: #
503: #
504: sub AdjustHostContents {
505: my $contents = shift;
506: my $adjusted;
507: my $me = $perlvar{'lonHostID'};
508:
1.354 albertel 509: foreach my $line (split(/\n/,$contents)) {
1.157 foxr 510: if(!(($line eq "") || ($line =~ /^ *\#/) || ($line =~ /^ *$/))) {
511: chomp($line);
512: my ($id,$domain,$role,$name,$ip,$maxcon,$idleto,$mincon)=split(/:/,$line);
513: if ($id eq $me) {
1.354 albertel 514: my $ip = gethostbyname($name);
515: my $ipnew = inet_ntoa($ip);
516: $ip = $ipnew;
1.157 foxr 517: # Reconstruct the host line and append to adjusted:
518:
1.354 albertel 519: my $newline = "$id:$domain:$role:$name:$ip";
520: if($maxcon ne "") { # Not all hosts have loncnew tuning params
521: $newline .= ":$maxcon:$idleto:$mincon";
522: }
523: $adjusted .= $newline."\n";
1.157 foxr 524:
1.354 albertel 525: } else { # Not me, pass unmodified.
526: $adjusted .= $line."\n";
527: }
1.157 foxr 528: } else { # Blank or comment never re-written.
529: $adjusted .= $line."\n"; # Pass blanks and comments as is.
530: }
1.354 albertel 531: }
532: return $adjusted;
1.157 foxr 533: }
1.143 foxr 534: #
535: # InstallFile: Called to install an administrative file:
1.412 foxr 536: # - The file is created int a temp directory called <name>.tmp
537: # - lcinstall file is called to install the file.
538: # since the web app has no direct write access to the table directory
1.143 foxr 539: #
540: # Parameters:
541: # Name of the file
542: # File Contents.
543: # Return:
544: # nonzero - success.
545: # 0 - failure and $! has an errno.
1.412 foxr 546: # Assumptions:
547: # File installtion is a relatively infrequent
1.143 foxr 548: #
549: sub InstallFile {
1.192 foxr 550:
551: my ($Filename, $Contents) = @_;
1.412 foxr 552: # my $TempFile = $Filename.".tmp";
553: my $exedir = $perlvar{'lonDaemons'};
554: my $tmpdir = $exedir.'/tmp/';
555: my $TempFile = $tmpdir."TempTableFile.tmp";
1.143 foxr 556:
557: # Open the file for write:
558:
559: my $fh = IO::File->new("> $TempFile"); # Write to temp.
560: if(!(defined $fh)) {
561: &logthis('<font color="red"> Unable to create '.$TempFile."</font>");
562: return 0;
563: }
564: # write the contents of the file:
565:
566: print $fh ($Contents);
567: $fh->close; # In case we ever have a filesystem w. locking
568:
1.412 foxr 569: chmod(0664, $TempFile); # Everyone can write it.
570:
571: # Use lcinstall file to put the file in the table directory...
572:
573: &Debug("Opening pipe to $exedir/lcinstallfile $TempFile $Filename");
574: my $pf = IO::File->new("| $exedir/lcinstallfile $TempFile $Filename > $exedir/logs/lcinstallfile.log");
575: close $pf;
576: my $err = $?;
577: &Debug("Status is $err");
578: if ($err != 0) {
579: my $msg = $err;
580: if ($err < @installerrors) {
581: $msg = $installerrors[$err];
582: }
583: &logthis("Install failed for table file $Filename : $msg");
584: return 0;
585: }
586:
587: # Remove the temp file:
1.143 foxr 588:
1.412 foxr 589: unlink($TempFile);
1.143 foxr 590:
591: return 1;
592: }
1.200 matthew 593:
594:
1.169 foxr 595: #
596: # ConfigFileFromSelector: converts a configuration file selector
1.411 foxr 597: # into a configuration file pathname.
598: # It's probably no longer necessary to preserve
599: # special handling of hosts or domain as those
600: # files have been superceded by dns_hosts, dns_domain.
601: # The default action is just to prepend the directory
602: # and append .tab
603: #
1.169 foxr 604: #
605: # Parameters:
606: # selector - Configuration file selector.
607: # Returns:
608: # Full path to the file or undef if the selector is invalid.
609: #
610: sub ConfigFileFromSelector {
611: my $selector = shift;
612: my $tablefile;
613:
614: my $tabledir = $perlvar{'lonTabDir'}.'/';
615: if ($selector eq "hosts") {
616: $tablefile = $tabledir."hosts.tab";
617: } elsif ($selector eq "domain") {
618: $tablefile = $tabledir."domain.tab";
619: } else {
1.411 foxr 620: $tablefile = $tabledir.$selector.'.tab';
1.169 foxr 621: }
622: return $tablefile;
1.143 foxr 623:
1.169 foxr 624: }
1.143 foxr 625: #
1.141 foxr 626: # PushFile: Called to do an administrative push of a file.
627: # - Ensure the file being pushed is one we support.
628: # - Backup the old file to <filename.saved>
629: # - Separate the contents of the new file out from the
630: # rest of the request.
631: # - Write the new file.
632: # Parameter:
633: # Request - The entire user request. This consists of a : separated
634: # string pushfile:tablename:contents.
635: # NOTE: The contents may have :'s in it as well making things a bit
636: # more interesting... but not much.
637: # Returns:
638: # String to send to client ("ok" or "refused" if bad file).
639: #
640: sub PushFile {
641: my $request = shift;
642: my ($command, $filename, $contents) = split(":", $request, 3);
1.412 foxr 643: &Debug("PushFile");
1.141 foxr 644:
645: # At this point in time, pushes for only the following tables are
646: # supported:
647: # hosts.tab ($filename eq host).
648: # domain.tab ($filename eq domain).
649: # Construct the destination filename or reject the request.
650: #
651: # lonManage is supposed to ensure this, however this session could be
652: # part of some elaborate spoof that managed somehow to authenticate.
653: #
654:
1.169 foxr 655:
656: my $tablefile = ConfigFileFromSelector($filename);
657: if(! (defined $tablefile)) {
1.141 foxr 658: return "refused";
659: }
1.412 foxr 660:
1.157 foxr 661: # If the file being pushed is the host file, we adjust the entry for ourself so that the
662: # IP will be our current IP as looked up in dns. Note this is only 99% good as it's possible
663: # to conceive of conditions where we don't have a DNS entry locally. This is possible in a
664: # network sense but it doesn't make much sense in a LonCAPA sense so we ignore (for now)
665: # that possibilty.
666:
667: if($filename eq "host") {
668: $contents = AdjustHostContents($contents);
669: }
670:
1.141 foxr 671: # Install the new file:
672:
1.412 foxr 673: &logthis("Installing new $tablefile contents:\n$contents");
1.143 foxr 674: if(!InstallFile($tablefile, $contents)) {
675: &logthis('<font color="red"> Pushfile: unable to install '
1.145 foxr 676: .$tablefile." $! </font>");
1.143 foxr 677: return "error:$!";
1.224 foxr 678: } else {
1.143 foxr 679: &logthis('<font color="green"> Installed new '.$tablefile
680: ."</font>");
681:
682: }
683:
1.141 foxr 684:
685: # Indicate success:
686:
687: return "ok";
688:
689: }
1.145 foxr 690:
691: #
692: # Called to re-init either lonc or lond.
693: #
694: # Parameters:
695: # request - The full request by the client. This is of the form
696: # reinit:<process>
697: # where <process> is allowed to be either of
698: # lonc or lond
699: #
700: # Returns:
701: # The string to be sent back to the client either:
702: # ok - Everything worked just fine.
703: # error:why - There was a failure and why describes the reason.
704: #
705: #
706: sub ReinitProcess {
707: my $request = shift;
708:
1.146 foxr 709:
710: # separate the request (reinit) from the process identifier and
711: # validate it producing the name of the .pid file for the process.
712: #
713: #
714: my ($junk, $process) = split(":", $request);
1.147 foxr 715: my $processpidfile = $perlvar{'lonDaemons'}.'/logs/';
1.146 foxr 716: if($process eq 'lonc') {
717: $processpidfile = $processpidfile."lonc.pid";
1.147 foxr 718: if (!open(PIDFILE, "< $processpidfile")) {
719: return "error:Open failed for $processpidfile";
720: }
721: my $loncpid = <PIDFILE>;
722: close(PIDFILE);
723: logthis('<font color="red"> Reinitializing lonc pid='.$loncpid
724: ."</font>");
725: kill("USR2", $loncpid);
1.146 foxr 726: } elsif ($process eq 'lond') {
1.147 foxr 727: logthis('<font color="red"> Reinitializing self (lond) </font>');
728: &UpdateHosts; # Lond is us!!
1.146 foxr 729: } else {
730: &logthis('<font color="yellow" Invalid reinit request for '.$process
731: ."</font>");
732: return "error:Invalid process identifier $process";
733: }
1.145 foxr 734: return 'ok';
735: }
1.168 foxr 736: # Validate a line in a configuration file edit script:
737: # Validation includes:
738: # - Ensuring the command is valid.
739: # - Ensuring the command has sufficient parameters
740: # Parameters:
741: # scriptline - A line to validate (\n has been stripped for what it's worth).
1.167 foxr 742: #
1.168 foxr 743: # Return:
744: # 0 - Invalid scriptline.
745: # 1 - Valid scriptline
746: # NOTE:
747: # Only the command syntax is checked, not the executability of the
748: # command.
749: #
750: sub isValidEditCommand {
751: my $scriptline = shift;
752:
753: # Line elements are pipe separated:
754:
755: my ($command, $key, $newline) = split(/\|/, $scriptline);
756: &logthis('<font color="green"> isValideditCommand checking: '.
757: "Command = '$command', Key = '$key', Newline = '$newline' </font>\n");
758:
759: if ($command eq "delete") {
760: #
761: # key with no newline.
762: #
763: if( ($key eq "") || ($newline ne "")) {
764: return 0; # Must have key but no newline.
765: } else {
766: return 1; # Valid syntax.
767: }
1.169 foxr 768: } elsif ($command eq "replace") {
1.168 foxr 769: #
770: # key and newline:
771: #
772: if (($key eq "") || ($newline eq "")) {
773: return 0;
774: } else {
775: return 1;
776: }
1.169 foxr 777: } elsif ($command eq "append") {
778: if (($key ne "") && ($newline eq "")) {
779: return 1;
780: } else {
781: return 0;
782: }
1.168 foxr 783: } else {
784: return 0; # Invalid command.
785: }
786: return 0; # Should not get here!!!
787: }
1.169 foxr 788: #
789: # ApplyEdit - Applies an edit command to a line in a configuration
790: # file. It is the caller's responsiblity to validate the
791: # edit line.
792: # Parameters:
793: # $directive - A single edit directive to apply.
794: # Edit directives are of the form:
795: # append|newline - Appends a new line to the file.
796: # replace|key|newline - Replaces the line with key value 'key'
797: # delete|key - Deletes the line with key value 'key'.
798: # $editor - A config file editor object that contains the
799: # file being edited.
800: #
801: sub ApplyEdit {
1.192 foxr 802:
803: my ($directive, $editor) = @_;
1.169 foxr 804:
805: # Break the directive down into its command and its parameters
806: # (at most two at this point. The meaning of the parameters, if in fact
807: # they exist depends on the command).
808:
809: my ($command, $p1, $p2) = split(/\|/, $directive);
810:
811: if($command eq "append") {
812: $editor->Append($p1); # p1 - key p2 null.
813: } elsif ($command eq "replace") {
814: $editor->ReplaceLine($p1, $p2); # p1 - key p2 = newline.
815: } elsif ($command eq "delete") {
816: $editor->DeleteLine($p1); # p1 - key p2 null.
817: } else { # Should not get here!!!
818: die "Invalid command given to ApplyEdit $command"
819: }
820: }
821: #
822: # AdjustOurHost:
823: # Adjusts a host file stored in a configuration file editor object
824: # for the true IP address of this host. This is necessary for hosts
825: # that live behind a firewall.
826: # Those hosts have a publicly distributed IP of the firewall, but
827: # internally must use their actual IP. We assume that a given
828: # host only has a single IP interface for now.
829: # Formal Parameters:
830: # editor - The configuration file editor to adjust. This
831: # editor is assumed to contain a hosts.tab file.
832: # Strategy:
833: # - Figure out our hostname.
834: # - Lookup the entry for this host.
835: # - Modify the line to contain our IP
836: # - Do a replace for this host.
837: sub AdjustOurHost {
838: my $editor = shift;
839:
840: # figure out who I am.
841:
842: my $myHostName = $perlvar{'lonHostID'}; # LonCAPA hostname.
843:
844: # Get my host file entry.
845:
846: my $ConfigLine = $editor->Find($myHostName);
847: if(! (defined $ConfigLine)) {
848: die "AdjustOurHost - no entry for me in hosts file $myHostName";
849: }
850: # figure out my IP:
851: # Use the config line to get my hostname.
852: # Use gethostbyname to translate that into an IP address.
853: #
1.338 albertel 854: my ($id,$domain,$role,$name,$maxcon,$idleto,$mincon) = split(/:/,$ConfigLine);
1.169 foxr 855: #
856: # Reassemble the config line from the elements in the list.
857: # Note that if the loncnew items were not present before, they will
858: # be now even if they would be empty
859: #
860: my $newConfigLine = $id;
1.338 albertel 861: foreach my $item ($domain, $role, $name, $maxcon, $idleto, $mincon) {
1.169 foxr 862: $newConfigLine .= ":".$item;
863: }
864: # Replace the line:
865:
866: $editor->ReplaceLine($id, $newConfigLine);
867:
868: }
869: #
870: # ReplaceConfigFile:
871: # Replaces a configuration file with the contents of a
872: # configuration file editor object.
873: # This is done by:
874: # - Copying the target file to <filename>.old
875: # - Writing the new file to <filename>.tmp
876: # - Moving <filename.tmp> -> <filename>
877: # This laborious process ensures that the system is never without
878: # a configuration file that's at least valid (even if the contents
879: # may be dated).
880: # Parameters:
881: # filename - Name of the file to modify... this is a full path.
882: # editor - Editor containing the file.
883: #
884: sub ReplaceConfigFile {
1.192 foxr 885:
886: my ($filename, $editor) = @_;
1.168 foxr 887:
1.169 foxr 888: CopyFile ($filename, $filename.".old");
889:
890: my $contents = $editor->Get(); # Get the contents of the file.
891:
892: InstallFile($filename, $contents);
893: }
1.168 foxr 894: #
895: #
896: # Called to edit a configuration table file
1.167 foxr 897: # Parameters:
898: # request - The entire command/request sent by lonc or lonManage
899: # Return:
900: # The reply to send to the client.
1.168 foxr 901: #
1.167 foxr 902: sub EditFile {
903: my $request = shift;
904:
905: # Split the command into it's pieces: edit:filetype:script
906:
1.339 albertel 907: my ($cmd, $filetype, $script) = split(/:/, $request,3); # : in script
1.167 foxr 908:
909: # Check the pre-coditions for success:
910:
1.339 albertel 911: if($cmd != "edit") { # Something is amiss afoot alack.
1.167 foxr 912: return "error:edit request detected, but request != 'edit'\n";
913: }
914: if( ($filetype ne "hosts") &&
915: ($filetype ne "domain")) {
916: return "error:edit requested with invalid file specifier: $filetype \n";
917: }
918:
919: # Split the edit script and check it's validity.
1.168 foxr 920:
921: my @scriptlines = split(/\n/, $script); # one line per element.
922: my $linecount = scalar(@scriptlines);
923: for(my $i = 0; $i < $linecount; $i++) {
924: chomp($scriptlines[$i]);
925: if(!isValidEditCommand($scriptlines[$i])) {
926: return "error:edit with bad script line: '$scriptlines[$i]' \n";
927: }
928: }
1.145 foxr 929:
1.167 foxr 930: # Execute the edit operation.
1.169 foxr 931: # - Create a config file editor for the appropriate file and
932: # - execute each command in the script:
933: #
934: my $configfile = ConfigFileFromSelector($filetype);
935: if (!(defined $configfile)) {
936: return "refused\n";
937: }
938: my $editor = ConfigFileEdit->new($configfile);
1.167 foxr 939:
1.169 foxr 940: for (my $i = 0; $i < $linecount; $i++) {
941: ApplyEdit($scriptlines[$i], $editor);
942: }
943: # If the file is the host file, ensure that our host is
944: # adjusted to have our ip:
945: #
946: if($filetype eq "host") {
947: AdjustOurHost($editor);
948: }
949: # Finally replace the current file with our file.
950: #
951: ReplaceConfigFile($configfile, $editor);
1.167 foxr 952:
953: return "ok\n";
954: }
1.207 foxr 955:
1.255 foxr 956: # read_profile
957: #
958: # Returns a set of specific entries from a user's profile file.
959: # this is a utility function that is used by both get_profile_entry and
960: # get_profile_entry_encrypted.
961: #
962: # Parameters:
963: # udom - Domain in which the user exists.
964: # uname - User's account name (loncapa account)
965: # namespace - The profile namespace to open.
966: # what - A set of & separated queries.
967: # Returns:
968: # If all ok: - The string that needs to be shipped back to the user.
969: # If failure - A string that starts with error: followed by the failure
970: # reason.. note that this probabyl gets shipped back to the
971: # user as well.
972: #
973: sub read_profile {
974: my ($udom, $uname, $namespace, $what) = @_;
975:
976: my $hashref = &tie_user_hash($udom, $uname, $namespace,
977: &GDBM_READER());
978: if ($hashref) {
979: my @queries=split(/\&/,$what);
1.440 raeburn 980: if ($namespace eq 'roles') {
981: @queries = map { &unescape($_); } @queries;
982: }
1.255 foxr 983: my $qresult='';
984:
985: for (my $i=0;$i<=$#queries;$i++) {
986: $qresult.="$hashref->{$queries[$i]}&"; # Presumably failure gives empty string.
987: }
988: $qresult=~s/\&$//; # Remove trailing & from last lookup.
1.311 albertel 989: if (&untie_user_hash($hashref)) {
1.255 foxr 990: return $qresult;
991: } else {
992: return "error: ".($!+0)." untie (GDBM) Failed";
993: }
994: } else {
995: if ($!+0 == 2) {
996: return "error:No such file or GDBM reported bad block error";
997: } else {
998: return "error: ".($!+0)." tie (GDBM) Failed";
999: }
1000: }
1001:
1002: }
1.214 foxr 1003: #--------------------- Request Handlers --------------------------------------------
1004: #
1.215 foxr 1005: # By convention each request handler registers itself prior to the sub
1006: # declaration:
1.214 foxr 1007: #
1008:
1.216 foxr 1009: #++
1010: #
1.214 foxr 1011: # Handles ping requests.
1012: # Parameters:
1013: # $cmd - the actual keyword that invoked us.
1014: # $tail - the tail of the request that invoked us.
1015: # $replyfd- File descriptor connected to the client
1016: # Implicit Inputs:
1017: # $currenthostid - Global variable that carries the name of the host we are
1018: # known as.
1019: # Returns:
1020: # 1 - Ok to continue processing.
1021: # 0 - Program should exit.
1022: # Side effects:
1023: # Reply information is sent to the client.
1024: sub ping_handler {
1025: my ($cmd, $tail, $client) = @_;
1026: Debug("$cmd $tail $client .. $currenthostid:");
1027:
1.387 albertel 1028: Reply( $client,\$currenthostid,"$cmd:$tail");
1.214 foxr 1029:
1030: return 1;
1031: }
1032: ®ister_handler("ping", \&ping_handler, 0, 1, 1); # Ping unencoded, client or manager.
1033:
1.216 foxr 1034: #++
1.215 foxr 1035: #
1036: # Handles pong requests. Pong replies with our current host id, and
1037: # the results of a ping sent to us via our lonc.
1038: #
1039: # Parameters:
1040: # $cmd - the actual keyword that invoked us.
1041: # $tail - the tail of the request that invoked us.
1042: # $replyfd- File descriptor connected to the client
1043: # Implicit Inputs:
1044: # $currenthostid - Global variable that carries the name of the host we are
1045: # connected to.
1046: # Returns:
1047: # 1 - Ok to continue processing.
1048: # 0 - Program should exit.
1049: # Side effects:
1050: # Reply information is sent to the client.
1051: sub pong_handler {
1052: my ($cmd, $tail, $replyfd) = @_;
1053:
1.365 albertel 1054: my $reply=&Apache::lonnet::reply("ping",$clientname);
1.215 foxr 1055: &Reply( $replyfd, "$currenthostid:$reply\n", "$cmd:$tail");
1056: return 1;
1057: }
1058: ®ister_handler("pong", \&pong_handler, 0, 1, 1); # Pong unencoded, client or manager
1059:
1.216 foxr 1060: #++
1061: # Called to establish an encrypted session key with the remote client.
1062: # Note that with secure lond, in most cases this function is never
1063: # invoked. Instead, the secure session key is established either
1064: # via a local file that's locked down tight and only lives for a short
1065: # time, or via an ssl tunnel...and is generated from a bunch-o-random
1066: # bits from /dev/urandom, rather than the predictable pattern used by
1067: # by this sub. This sub is only used in the old-style insecure
1068: # key negotiation.
1069: # Parameters:
1070: # $cmd - the actual keyword that invoked us.
1071: # $tail - the tail of the request that invoked us.
1072: # $replyfd- File descriptor connected to the client
1073: # Implicit Inputs:
1074: # $currenthostid - Global variable that carries the name of the host
1075: # known as.
1.448 raeburn 1076: # $clientname - Global variable that carries the name of the host we're connected to.
1.216 foxr 1077: # Returns:
1078: # 1 - Ok to continue processing.
1079: # 0 - Program should exit.
1080: # Implicit Outputs:
1081: # Reply information is sent to the client.
1082: # $cipher is set with a reference to a new IDEA encryption object.
1083: #
1084: sub establish_key_handler {
1085: my ($cmd, $tail, $replyfd) = @_;
1086:
1087: my $buildkey=time.$$.int(rand 100000);
1088: $buildkey=~tr/1-6/A-F/;
1089: $buildkey=int(rand 100000).$buildkey.int(rand 100000);
1090: my $key=$currenthostid.$clientname;
1091: $key=~tr/a-z/A-Z/;
1092: $key=~tr/G-P/0-9/;
1093: $key=~tr/Q-Z/0-9/;
1094: $key=$key.$buildkey.$key.$buildkey.$key.$buildkey;
1095: $key=substr($key,0,32);
1096: my $cipherkey=pack("H32",$key);
1097: $cipher=new IDEA $cipherkey;
1.387 albertel 1098: &Reply($replyfd, \$buildkey, "$cmd:$tail");
1.216 foxr 1099:
1100: return 1;
1101:
1102: }
1103: ®ister_handler("ekey", \&establish_key_handler, 0, 1,1);
1104:
1.217 foxr 1105: # Handler for the load command. Returns the current system load average
1106: # to the requestor.
1107: #
1108: # Parameters:
1109: # $cmd - the actual keyword that invoked us.
1110: # $tail - the tail of the request that invoked us.
1111: # $replyfd- File descriptor connected to the client
1112: # Implicit Inputs:
1113: # $currenthostid - Global variable that carries the name of the host
1114: # known as.
1.448 raeburn 1115: # $clientname - Global variable that carries the name of the host we're connected to.
1.217 foxr 1116: # Returns:
1117: # 1 - Ok to continue processing.
1118: # 0 - Program should exit.
1119: # Side effects:
1120: # Reply information is sent to the client.
1121: sub load_handler {
1122: my ($cmd, $tail, $replyfd) = @_;
1123:
1.463 foxr 1124:
1125:
1.217 foxr 1126: # Get the load average from /proc/loadavg and calculate it as a percentage of
1127: # the allowed load limit as set by the perl global variable lonLoadLim
1128:
1129: my $loadavg;
1130: my $loadfile=IO::File->new('/proc/loadavg');
1131:
1132: $loadavg=<$loadfile>;
1133: $loadavg =~ s/\s.*//g; # Extract the first field only.
1134:
1135: my $loadpercent=100*$loadavg/$perlvar{'lonLoadLim'};
1136:
1.387 albertel 1137: &Reply( $replyfd, \$loadpercent, "$cmd:$tail");
1.217 foxr 1138:
1139: return 1;
1140: }
1.263 albertel 1141: ®ister_handler("load", \&load_handler, 0, 1, 0);
1.217 foxr 1142:
1143: #
1144: # Process the userload request. This sub returns to the client the current
1145: # user load average. It can be invoked either by clients or managers.
1146: #
1147: # Parameters:
1148: # $cmd - the actual keyword that invoked us.
1149: # $tail - the tail of the request that invoked us.
1150: # $replyfd- File descriptor connected to the client
1151: # Implicit Inputs:
1152: # $currenthostid - Global variable that carries the name of the host
1153: # known as.
1.448 raeburn 1154: # $clientname - Global variable that carries the name of the host we're connected to.
1.217 foxr 1155: # Returns:
1156: # 1 - Ok to continue processing.
1157: # 0 - Program should exit
1158: # Implicit inputs:
1159: # whatever the userload() function requires.
1160: # Implicit outputs:
1161: # the reply is written to the client.
1162: #
1163: sub user_load_handler {
1164: my ($cmd, $tail, $replyfd) = @_;
1165:
1.365 albertel 1166: my $userloadpercent=&Apache::lonnet::userload();
1.387 albertel 1167: &Reply($replyfd, \$userloadpercent, "$cmd:$tail");
1.217 foxr 1168:
1169: return 1;
1170: }
1.263 albertel 1171: ®ister_handler("userload", \&user_load_handler, 0, 1, 0);
1.217 foxr 1172:
1.218 foxr 1173: # Process a request for the authorization type of a user:
1174: # (userauth).
1175: #
1176: # Parameters:
1177: # $cmd - the actual keyword that invoked us.
1178: # $tail - the tail of the request that invoked us.
1179: # $replyfd- File descriptor connected to the client
1180: # Returns:
1181: # 1 - Ok to continue processing.
1182: # 0 - Program should exit
1183: # Implicit outputs:
1184: # The user authorization type is written to the client.
1185: #
1186: sub user_authorization_type {
1187: my ($cmd, $tail, $replyfd) = @_;
1188:
1189: my $userinput = "$cmd:$tail";
1190:
1191: # Pull the domain and username out of the command tail.
1.222 foxr 1192: # and call get_auth_type to determine the authentication type.
1.218 foxr 1193:
1194: my ($udom,$uname)=split(/:/,$tail);
1.222 foxr 1195: my $result = &get_auth_type($udom, $uname);
1.218 foxr 1196: if($result eq "nouser") {
1197: &Failure( $replyfd, "unknown_user\n", $userinput);
1198: } else {
1199: #
1.222 foxr 1200: # We only want to pass the second field from get_auth_type
1.218 foxr 1201: # for ^krb.. otherwise we'll be handing out the encrypted
1202: # password for internals e.g.
1203: #
1204: my ($type,$otherinfo) = split(/:/,$result);
1205: if($type =~ /^krb/) {
1206: $type = $result;
1.269 raeburn 1207: } else {
1208: $type .= ':';
1209: }
1.387 albertel 1210: &Reply( $replyfd, \$type, $userinput);
1.218 foxr 1211: }
1212:
1213: return 1;
1214: }
1215: ®ister_handler("currentauth", \&user_authorization_type, 1, 1, 0);
1216:
1217: # Process a request by a manager to push a hosts or domain table
1218: # to us. We pick apart the command and pass it on to the subs
1219: # that already exist to do this.
1220: #
1221: # Parameters:
1222: # $cmd - the actual keyword that invoked us.
1223: # $tail - the tail of the request that invoked us.
1224: # $client - File descriptor connected to the client
1225: # Returns:
1226: # 1 - Ok to continue processing.
1227: # 0 - Program should exit
1228: # Implicit Output:
1229: # a reply is written to the client.
1230: sub push_file_handler {
1231: my ($cmd, $tail, $client) = @_;
1.412 foxr 1232: &Debug("In push file handler");
1.218 foxr 1233: my $userinput = "$cmd:$tail";
1234:
1235: # At this time we only know that the IP of our partner is a valid manager
1236: # the code below is a hook to do further authentication (e.g. to resolve
1237: # spoofing).
1238:
1239: my $cert = &GetCertificate($userinput);
1.412 foxr 1240: if(&ValidManager($cert)) {
1241: &Debug("Valid manager: $client");
1.218 foxr 1242:
1243: # Now presumably we have the bona fides of both the peer host and the
1244: # process making the request.
1245:
1246: my $reply = &PushFile($userinput);
1.387 albertel 1247: &Reply($client, \$reply, $userinput);
1.218 foxr 1248:
1249: } else {
1.412 foxr 1250: &logthis("push_file_handler $client is not valid");
1.218 foxr 1251: &Failure( $client, "refused\n", $userinput);
1252: }
1.219 foxr 1253: return 1;
1.218 foxr 1254: }
1255: ®ister_handler("pushfile", \&push_file_handler, 1, 0, 1);
1256:
1.399 raeburn 1257: # The du_handler routine should be considered obsolete and is retained
1258: # for communication with legacy servers. Please see the du2_handler.
1.243 banghart 1259: #
1.399 raeburn 1260: # du - list the disk usage of a directory recursively.
1.243 banghart 1261: #
1262: # note: stolen code from the ls file handler
1263: # under construction by Rick Banghart
1264: # .
1265: # Parameters:
1266: # $cmd - The command that dispatched us (du).
1267: # $ududir - The directory path to list... I'm not sure what this
1268: # is relative as things like ls:. return e.g.
1269: # no_such_dir.
1270: # $client - Socket open on the client.
1271: # Returns:
1272: # 1 - indicating that the daemon should not disconnect.
1273: # Side Effects:
1274: # The reply is written to $client.
1275: #
1276: sub du_handler {
1277: my ($cmd, $ududir, $client) = @_;
1.339 albertel 1278: ($ududir) = split(/:/,$ududir); # Make 'telnet' testing easier.
1.251 foxr 1279: my $userinput = "$cmd:$ududir";
1280:
1.245 albertel 1281: if ($ududir=~/\.\./ || $ududir!~m|^/home/httpd/|) {
1282: &Failure($client,"refused\n","$cmd:$ududir");
1283: return 1;
1284: }
1.249 foxr 1285: # Since $ududir could have some nasties in it,
1286: # we will require that ududir is a valid
1287: # directory. Just in case someone tries to
1288: # slip us a line like .;(cd /home/httpd rm -rf*)
1289: # etc.
1290: #
1291: if (-d $ududir) {
1.292 albertel 1292: my $total_size=0;
1293: my $code=sub {
1294: if ($_=~/\.\d+\./) { return;}
1295: if ($_=~/\.meta$/) { return;}
1.362 albertel 1296: if (-d $_) { return;}
1.292 albertel 1297: $total_size+=(stat($_))[7];
1298: };
1.295 raeburn 1299: chdir($ududir);
1.292 albertel 1300: find($code,$ududir);
1301: $total_size=int($total_size/1024);
1.387 albertel 1302: &Reply($client,\$total_size,"$cmd:$ududir");
1.249 foxr 1303: } else {
1.251 foxr 1304: &Failure($client, "bad_directory:$ududir\n","$cmd:$ududir");
1.249 foxr 1305: }
1.243 banghart 1306: return 1;
1307: }
1308: ®ister_handler("du", \&du_handler, 0, 1, 0);
1.218 foxr 1309:
1.399 raeburn 1310: # Please also see the du_handler, which is obsoleted by du2.
1311: # du2_handler differs from du_handler in that required path to directory
1312: # provided by &propath() is prepended in the handler instead of on the
1313: # client side.
1.239 foxr 1314: #
1.399 raeburn 1315: # du2 - list the disk usage of a directory recursively.
1316: #
1317: # Parameters:
1318: # $cmd - The command that dispatched us (du).
1319: # $tail - The tail of the request that invoked us.
1320: # $tail is a : separated list of the following:
1321: # - $ududir - directory path to list (before prepending)
1322: # - $getpropath = 1 if &propath() should prepend
1323: # - $uname - username to use for &propath or user dir
1324: # - $udom - domain to use for &propath or user dir
1325: # All are escaped.
1326: # $client - Socket open on the client.
1327: # Returns:
1328: # 1 - indicating that the daemon should not disconnect.
1329: # Side Effects:
1330: # The reply is written to $client.
1331: #
1332:
1333: sub du2_handler {
1334: my ($cmd, $tail, $client) = @_;
1335: my ($ududir,$getpropath,$uname,$udom) = map { &unescape($_) } (split(/:/, $tail));
1336: my $userinput = "$cmd:$tail";
1337: if (($ududir=~/\.\./) || (($ududir!~m|^/home/httpd/|) && (!$getpropath))) {
1338: &Failure($client,"refused\n","$cmd:$tail");
1339: return 1;
1340: }
1341: if ($getpropath) {
1342: if (($uname =~ /^$LONCAPA::match_name$/) && ($udom =~ /^$LONCAPA::match_domain$/)) {
1343: $ududir = &propath($udom,$uname).'/'.$ududir;
1344: } else {
1345: &Failure($client,"refused\n","$cmd:$tail");
1346: return 1;
1347: }
1348: }
1349: # Since $ududir could have some nasties in it,
1350: # we will require that ududir is a valid
1351: # directory. Just in case someone tries to
1352: # slip us a line like .;(cd /home/httpd rm -rf*)
1353: # etc.
1354: #
1355: if (-d $ududir) {
1356: my $total_size=0;
1357: my $code=sub {
1358: if ($_=~/\.\d+\./) { return;}
1359: if ($_=~/\.meta$/) { return;}
1360: if (-d $_) { return;}
1361: $total_size+=(stat($_))[7];
1362: };
1363: chdir($ududir);
1364: find($code,$ududir);
1365: $total_size=int($total_size/1024);
1366: &Reply($client,\$total_size,"$cmd:$ududir");
1367: } else {
1368: &Failure($client, "bad_directory:$ududir\n","$cmd:$tail");
1369: }
1370: return 1;
1371: }
1372: ®ister_handler("du2", \&du2_handler, 0, 1, 0);
1373:
1374: #
1375: # The ls_handler routine should be considered obsolete and is retained
1376: # for communication with legacy servers. Please see the ls3_handler.
1.280 matthew 1377: #
1.239 foxr 1378: # ls - list the contents of a directory. For each file in the
1379: # selected directory the filename followed by the full output of
1380: # the stat function is returned. The returned info for each
1381: # file are separated by ':'. The stat fields are separated by &'s.
1382: # Parameters:
1383: # $cmd - The command that dispatched us (ls).
1384: # $ulsdir - The directory path to list... I'm not sure what this
1385: # is relative as things like ls:. return e.g.
1386: # no_such_dir.
1387: # $client - Socket open on the client.
1388: # Returns:
1389: # 1 - indicating that the daemon should not disconnect.
1390: # Side Effects:
1391: # The reply is written to $client.
1392: #
1393: sub ls_handler {
1.280 matthew 1394: # obsoleted by ls2_handler
1.239 foxr 1395: my ($cmd, $ulsdir, $client) = @_;
1396:
1397: my $userinput = "$cmd:$ulsdir";
1398:
1399: my $obs;
1400: my $rights;
1401: my $ulsout='';
1402: my $ulsfn;
1403: if (-e $ulsdir) {
1404: if(-d $ulsdir) {
1405: if (opendir(LSDIR,$ulsdir)) {
1406: while ($ulsfn=readdir(LSDIR)) {
1.291 albertel 1407: undef($obs);
1408: undef($rights);
1.239 foxr 1409: my @ulsstats=stat($ulsdir.'/'.$ulsfn);
1410: #We do some obsolete checking here
1411: if(-e $ulsdir.'/'.$ulsfn.".meta") {
1412: open(FILE, $ulsdir.'/'.$ulsfn.".meta");
1413: my @obsolete=<FILE>;
1414: foreach my $obsolete (@obsolete) {
1.301 www 1415: if($obsolete =~ m/(<obsolete>)(on|1)/) { $obs = 1; }
1.239 foxr 1416: if($obsolete =~ m|(<copyright>)(default)|) { $rights = 1; }
1417: }
1418: }
1419: $ulsout.=$ulsfn.'&'.join('&',@ulsstats);
1420: if($obs eq '1') { $ulsout.="&1"; }
1421: else { $ulsout.="&0"; }
1422: if($rights eq '1') { $ulsout.="&1:"; }
1423: else { $ulsout.="&0:"; }
1424: }
1425: closedir(LSDIR);
1426: }
1427: } else {
1428: my @ulsstats=stat($ulsdir);
1429: $ulsout.=$ulsfn.'&'.join('&',@ulsstats).':';
1430: }
1431: } else {
1432: $ulsout='no_such_dir';
1433: }
1434: if ($ulsout eq '') { $ulsout='empty'; }
1.387 albertel 1435: &Reply($client, \$ulsout, $userinput); # This supports debug logging.
1.239 foxr 1436:
1437: return 1;
1438:
1439: }
1440: ®ister_handler("ls", \&ls_handler, 0, 1, 0);
1441:
1.399 raeburn 1442: # The ls2_handler routine should be considered obsolete and is retained
1443: # for communication with legacy servers. Please see the ls3_handler.
1444: # Please also see the ls_handler, which was itself obsoleted by ls2.
1.280 matthew 1445: # ls2_handler differs from ls_handler in that it escapes its return
1446: # values before concatenating them together with ':'s.
1447: #
1448: # ls2 - list the contents of a directory. For each file in the
1449: # selected directory the filename followed by the full output of
1450: # the stat function is returned. The returned info for each
1451: # file are separated by ':'. The stat fields are separated by &'s.
1452: # Parameters:
1453: # $cmd - The command that dispatched us (ls).
1454: # $ulsdir - The directory path to list... I'm not sure what this
1455: # is relative as things like ls:. return e.g.
1456: # no_such_dir.
1457: # $client - Socket open on the client.
1458: # Returns:
1459: # 1 - indicating that the daemon should not disconnect.
1460: # Side Effects:
1461: # The reply is written to $client.
1462: #
1463: sub ls2_handler {
1464: my ($cmd, $ulsdir, $client) = @_;
1465:
1466: my $userinput = "$cmd:$ulsdir";
1467:
1468: my $obs;
1469: my $rights;
1470: my $ulsout='';
1471: my $ulsfn;
1472: if (-e $ulsdir) {
1473: if(-d $ulsdir) {
1474: if (opendir(LSDIR,$ulsdir)) {
1475: while ($ulsfn=readdir(LSDIR)) {
1.291 albertel 1476: undef($obs);
1477: undef($rights);
1.280 matthew 1478: my @ulsstats=stat($ulsdir.'/'.$ulsfn);
1479: #We do some obsolete checking here
1480: if(-e $ulsdir.'/'.$ulsfn.".meta") {
1481: open(FILE, $ulsdir.'/'.$ulsfn.".meta");
1482: my @obsolete=<FILE>;
1483: foreach my $obsolete (@obsolete) {
1.301 www 1484: if($obsolete =~ m/(<obsolete>)(on|1)/) { $obs = 1; }
1.280 matthew 1485: if($obsolete =~ m|(<copyright>)(default)|) {
1486: $rights = 1;
1487: }
1488: }
1489: }
1490: my $tmp = $ulsfn.'&'.join('&',@ulsstats);
1491: if ($obs eq '1') { $tmp.="&1"; } else { $tmp.="&0"; }
1492: if ($rights eq '1') { $tmp.="&1"; } else { $tmp.="&0"; }
1493: $ulsout.= &escape($tmp).':';
1494: }
1495: closedir(LSDIR);
1496: }
1497: } else {
1498: my @ulsstats=stat($ulsdir);
1499: $ulsout.=$ulsfn.'&'.join('&',@ulsstats).':';
1500: }
1501: } else {
1502: $ulsout='no_such_dir';
1503: }
1504: if ($ulsout eq '') { $ulsout='empty'; }
1.387 albertel 1505: &Reply($client, \$ulsout, $userinput); # This supports debug logging.
1.280 matthew 1506: return 1;
1507: }
1508: ®ister_handler("ls2", \&ls2_handler, 0, 1, 0);
1.399 raeburn 1509: #
1510: # ls3 - list the contents of a directory. For each file in the
1511: # selected directory the filename followed by the full output of
1512: # the stat function is returned. The returned info for each
1513: # file are separated by ':'. The stat fields are separated by &'s.
1514: # Parameters:
1515: # $cmd - The command that dispatched us (ls).
1516: # $tail - The tail of the request that invoked us.
1517: # $tail is a : separated list of the following:
1518: # - $ulsdir - directory path to list (before prepending)
1519: # - $getpropath = 1 if &propath() should prepend
1520: # - $getuserdir = 1 if path to user dir in lonUsers should
1521: # prepend
1522: # - $alternate_root - path to prepend
1523: # - $uname - username to use for &propath or user dir
1524: # - $udom - domain to use for &propath or user dir
1525: # All of these except $getpropath and &getuserdir are escaped.
1526: # no_such_dir.
1527: # $client - Socket open on the client.
1528: # Returns:
1529: # 1 - indicating that the daemon should not disconnect.
1530: # Side Effects:
1531: # The reply is written to $client.
1532: #
1533:
1534: sub ls3_handler {
1535: my ($cmd, $tail, $client) = @_;
1536: my $userinput = "$cmd:$tail";
1537: my ($ulsdir,$getpropath,$getuserdir,$alternate_root,$uname,$udom) =
1538: split(/:/,$tail);
1539: if (defined($ulsdir)) {
1540: $ulsdir = &unescape($ulsdir);
1541: }
1542: if (defined($alternate_root)) {
1543: $alternate_root = &unescape($alternate_root);
1544: }
1545: if (defined($uname)) {
1546: $uname = &unescape($uname);
1547: }
1548: if (defined($udom)) {
1549: $udom = &unescape($udom);
1550: }
1551:
1552: my $dir_root = $perlvar{'lonDocRoot'};
1553: if ($getpropath) {
1554: if (($uname =~ /^$LONCAPA::match_name$/) && ($udom =~ /^$LONCAPA::match_domain$/)) {
1555: $dir_root = &propath($udom,$uname);
1556: $dir_root =~ s/\/$//;
1557: } else {
1558: &Failure($client,"refused\n","$cmd:$tail");
1559: return 1;
1560: }
1561: } elsif ($getuserdir) {
1562: if (($uname =~ /^$LONCAPA::match_name$/) && ($udom =~ /^$LONCAPA::match_domain$/)) {
1563: my $subdir=$uname.'__';
1564: $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;
1565: $dir_root = $Apache::lonnet::perlvar{'lonUsersDir'}
1566: ."/$udom/$subdir/$uname";
1567: } else {
1568: &Failure($client,"refused\n","$cmd:$tail");
1569: return 1;
1570: }
1.400 raeburn 1571: } elsif ($alternate_root ne '') {
1.399 raeburn 1572: $dir_root = $alternate_root;
1573: }
1.408 raeburn 1574: if (($dir_root ne '') && ($dir_root ne '/')) {
1.400 raeburn 1575: if ($ulsdir =~ /^\//) {
1576: $ulsdir = $dir_root.$ulsdir;
1577: } else {
1578: $ulsdir = $dir_root.'/'.$ulsdir;
1579: }
1.399 raeburn 1580: }
1581: my $obs;
1582: my $rights;
1583: my $ulsout='';
1584: my $ulsfn;
1585: if (-e $ulsdir) {
1586: if(-d $ulsdir) {
1587: if (opendir(LSDIR,$ulsdir)) {
1588: while ($ulsfn=readdir(LSDIR)) {
1589: undef($obs);
1590: undef($rights);
1591: my @ulsstats=stat($ulsdir.'/'.$ulsfn);
1592: #We do some obsolete checking here
1593: if(-e $ulsdir.'/'.$ulsfn.".meta") {
1594: open(FILE, $ulsdir.'/'.$ulsfn.".meta");
1595: my @obsolete=<FILE>;
1596: foreach my $obsolete (@obsolete) {
1597: if($obsolete =~ m/(<obsolete>)(on|1)/) { $obs = 1; }
1598: if($obsolete =~ m|(<copyright>)(default)|) {
1599: $rights = 1;
1600: }
1601: }
1602: }
1603: my $tmp = $ulsfn.'&'.join('&',@ulsstats);
1604: if ($obs eq '1') { $tmp.="&1"; } else { $tmp.="&0"; }
1605: if ($rights eq '1') { $tmp.="&1"; } else { $tmp.="&0"; }
1606: $ulsout.= &escape($tmp).':';
1607: }
1608: closedir(LSDIR);
1609: }
1610: } else {
1611: my @ulsstats=stat($ulsdir);
1612: $ulsout.=$ulsfn.'&'.join('&',@ulsstats).':';
1613: }
1614: } else {
1615: $ulsout='no_such_dir';
1.400 raeburn 1616: }
1617: if ($ulsout eq '') { $ulsout='empty'; }
1618: &Reply($client, \$ulsout, $userinput); # This supports debug logging.
1619: return 1;
1.399 raeburn 1620: }
1621: ®ister_handler("ls3", \&ls3_handler, 0, 1, 0);
1.280 matthew 1622:
1.410 raeburn 1623: sub server_timezone_handler {
1624: my ($cmd,$tail,$client) = @_;
1625: my $userinput = "$cmd:$tail";
1626: my $timezone;
1627: my $clockfile = '/etc/sysconfig/clock'; # Fedora/CentOS/SuSE
1628: my $tzfile = '/etc/timezone'; # Debian/Ubuntu
1629: if (-e $clockfile) {
1630: if (open(my $fh,"<$clockfile")) {
1631: while (<$fh>) {
1632: next if (/^[\#\s]/);
1633: if (/^(?:TIME)?ZONE\s*=\s*['"]?\s*([\w\/]+)/) {
1634: $timezone = $1;
1635: last;
1636: }
1637: }
1638: close($fh);
1639: }
1640: } elsif (-e $tzfile) {
1641: if (open(my $fh,"<$tzfile")) {
1642: $timezone = <$fh>;
1643: close($fh);
1644: chomp($timezone);
1645: if ($timezone =~ m{^Etc/(\w+)$}) {
1646: $timezone = $1;
1647: }
1648: }
1649: }
1650: &Reply($client,\$timezone,$userinput); # This supports debug logging.
1651: return 1;
1652: }
1653: ®ister_handler("servertimezone", \&server_timezone_handler, 0, 1, 0);
1654:
1.413 raeburn 1655: sub server_loncaparev_handler {
1656: my ($cmd,$tail,$client) = @_;
1657: my $userinput = "$cmd:$tail";
1658: &Reply($client,\$perlvar{'lonVersion'},$userinput);
1659: return 1;
1660: }
1661: ®ister_handler("serverloncaparev", \&server_loncaparev_handler, 0, 1, 0);
1662:
1.448 raeburn 1663: sub server_homeID_handler {
1664: my ($cmd,$tail,$client) = @_;
1665: my $userinput = "$cmd:$tail";
1666: &Reply($client,\$perlvar{'lonHostID'},$userinput);
1667: return 1;
1668: }
1669: ®ister_handler("serverhomeID", \&server_homeID_handler, 0, 1, 0);
1670:
1.218 foxr 1671: # Process a reinit request. Reinit requests that either
1672: # lonc or lond be reinitialized so that an updated
1673: # host.tab or domain.tab can be processed.
1674: #
1675: # Parameters:
1676: # $cmd - the actual keyword that invoked us.
1677: # $tail - the tail of the request that invoked us.
1678: # $client - File descriptor connected to the client
1679: # Returns:
1680: # 1 - Ok to continue processing.
1681: # 0 - Program should exit
1682: # Implicit output:
1683: # a reply is sent to the client.
1684: #
1685: sub reinit_process_handler {
1686: my ($cmd, $tail, $client) = @_;
1687:
1688: my $userinput = "$cmd:$tail";
1689:
1690: my $cert = &GetCertificate($userinput);
1691: if(&ValidManager($cert)) {
1692: chomp($userinput);
1693: my $reply = &ReinitProcess($userinput);
1.387 albertel 1694: &Reply( $client, \$reply, $userinput);
1.218 foxr 1695: } else {
1696: &Failure( $client, "refused\n", $userinput);
1697: }
1698: return 1;
1699: }
1700: ®ister_handler("reinit", \&reinit_process_handler, 1, 0, 1);
1701:
1702: # Process the editing script for a table edit operation.
1703: # the editing operation must be encrypted and requested by
1704: # a manager host.
1705: #
1706: # Parameters:
1707: # $cmd - the actual keyword that invoked us.
1708: # $tail - the tail of the request that invoked us.
1709: # $client - File descriptor connected to the client
1710: # Returns:
1711: # 1 - Ok to continue processing.
1712: # 0 - Program should exit
1713: # Implicit output:
1714: # a reply is sent to the client.
1715: #
1716: sub edit_table_handler {
1717: my ($command, $tail, $client) = @_;
1718:
1719: my $userinput = "$command:$tail";
1720:
1721: my $cert = &GetCertificate($userinput);
1722: if(&ValidManager($cert)) {
1723: my($filetype, $script) = split(/:/, $tail);
1724: if (($filetype eq "hosts") ||
1725: ($filetype eq "domain")) {
1726: if($script ne "") {
1727: &Reply($client, # BUGBUG - EditFile
1728: &EditFile($userinput), # could fail.
1729: $userinput);
1730: } else {
1731: &Failure($client,"refused\n",$userinput);
1732: }
1733: } else {
1734: &Failure($client,"refused\n",$userinput);
1735: }
1736: } else {
1737: &Failure($client,"refused\n",$userinput);
1738: }
1739: return 1;
1740: }
1.263 albertel 1741: ®ister_handler("edit", \&edit_table_handler, 1, 0, 1);
1.218 foxr 1742:
1.220 foxr 1743: #
1744: # Authenticate a user against the LonCAPA authentication
1745: # database. Note that there are several authentication
1746: # possibilities:
1747: # - unix - The user can be authenticated against the unix
1748: # password file.
1749: # - internal - The user can be authenticated against a purely
1750: # internal per user password file.
1751: # - kerberos - The user can be authenticated against either a kerb4 or kerb5
1752: # ticket granting authority.
1753: # - user - The person tailoring LonCAPA can supply a user authentication
1754: # mechanism that is per system.
1755: #
1756: # Parameters:
1757: # $cmd - The command that got us here.
1758: # $tail - Tail of the command (remaining parameters).
1759: # $client - File descriptor connected to client.
1760: # Returns
1761: # 0 - Requested to exit, caller should shut down.
1762: # 1 - Continue processing.
1763: # Implicit inputs:
1764: # The authentication systems describe above have their own forms of implicit
1765: # input into the authentication process that are described above.
1766: #
1767: sub authenticate_handler {
1768: my ($cmd, $tail, $client) = @_;
1769:
1770:
1771: # Regenerate the full input line
1772:
1773: my $userinput = $cmd.":".$tail;
1774:
1775: # udom - User's domain.
1776: # uname - Username.
1777: # upass - User's password.
1.396 raeburn 1778: # checkdefauth - Pass to validate_user() to try authentication
1779: # with default auth type(s) if no user account.
1.447 raeburn 1780: # clientcancheckhost - Passed by clients with functionality in lonauth.pm
1781: # to check if session can be hosted.
1.220 foxr 1782:
1.447 raeburn 1783: my ($udom, $uname, $upass, $checkdefauth, $clientcancheckhost)=split(/:/,$tail);
1.399 raeburn 1784: &Debug(" Authenticate domain = $udom, user = $uname, password = $upass, checkdefauth = $checkdefauth");
1.220 foxr 1785: chomp($upass);
1786: $upass=&unescape($upass);
1787:
1.396 raeburn 1788: my $pwdcorrect = &validate_user($udom,$uname,$upass,$checkdefauth);
1.220 foxr 1789: if($pwdcorrect) {
1.447 raeburn 1790: my $canhost = 1;
1791: unless ($clientcancheckhost) {
1.448 raeburn 1792: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
1793: my $uint_dom = &Apache::lonnet::internet_dom($uprimary_id);
1.452 raeburn 1794: my @intdoms;
1795: my $internet_names = &Apache::lonnet::get_internet_names($clientname);
1796: if (ref($internet_names) eq 'ARRAY') {
1797: @intdoms = @{$internet_names};
1798: }
1.448 raeburn 1799: unless ($uint_dom ne '' && grep(/^\Q$uint_dom\E$/,@intdoms)) {
1.447 raeburn 1800: my ($remote,$hosted);
1801: my $remotesession = &get_usersession_config($udom,'remotesession');
1802: if (ref($remotesession) eq 'HASH') {
1803: $remote = $remotesession->{'remote'}
1804: }
1.448 raeburn 1805: my $hostedsession = &get_usersession_config($clienthomedom,'hostedsession');
1.447 raeburn 1806: if (ref($hostedsession) eq 'HASH') {
1807: $hosted = $hostedsession->{'hosted'};
1808: }
1.449 raeburn 1809: my $loncaparev = $clientversion;
1810: if ($loncaparev eq '') {
1811: $loncaparev = $Apache::lonnet::loncaparevs{$clientname};
1812: }
1.448 raeburn 1813: $canhost = &Apache::lonnet::can_host_session($udom,$clientname,
1.449 raeburn 1814: $loncaparev,
1.447 raeburn 1815: $remote,$hosted);
1816: }
1817: }
1818: if ($canhost) {
1819: &Reply( $client, "authorized\n", $userinput);
1820: } else {
1821: &Reply( $client, "not_allowed_to_host\n", $userinput);
1822: }
1.220 foxr 1823: #
1824: # Bad credentials: Failed to authorize
1825: #
1826: } else {
1827: &Failure( $client, "non_authorized\n", $userinput);
1828: }
1829:
1830: return 1;
1831: }
1.263 albertel 1832: ®ister_handler("auth", \&authenticate_handler, 1, 1, 0);
1.214 foxr 1833:
1.222 foxr 1834: #
1835: # Change a user's password. Note that this function is complicated by
1836: # the fact that a user may be authenticated in more than one way:
1837: # At present, we are not able to change the password for all types of
1838: # authentication methods. Only for:
1839: # unix - unix password or shadow passoword style authentication.
1840: # local - Locally written authentication mechanism.
1841: # For now, kerb4 and kerb5 password changes are not supported and result
1842: # in an error.
1843: # FUTURE WORK:
1844: # Support kerberos passwd changes?
1845: # Parameters:
1846: # $cmd - The command that got us here.
1847: # $tail - Tail of the command (remaining parameters).
1848: # $client - File descriptor connected to client.
1849: # Returns
1850: # 0 - Requested to exit, caller should shut down.
1851: # 1 - Continue processing.
1852: # Implicit inputs:
1853: # The authentication systems describe above have their own forms of implicit
1854: # input into the authentication process that are described above.
1855: sub change_password_handler {
1856: my ($cmd, $tail, $client) = @_;
1857:
1858: my $userinput = $cmd.":".$tail; # Reconstruct client's string.
1859:
1860: #
1861: # udom - user's domain.
1862: # uname - Username.
1863: # upass - Current password.
1864: # npass - New password.
1.346 raeburn 1865: # context - Context in which this was called
1866: # (preferences or reset_by_email).
1.428 raeburn 1867: # lonhost - HostID of server where request originated
1.222 foxr 1868:
1.428 raeburn 1869: my ($udom,$uname,$upass,$npass,$context,$lonhost)=split(/:/,$tail);
1.222 foxr 1870:
1871: $upass=&unescape($upass);
1872: $npass=&unescape($npass);
1873: &Debug("Trying to change password for $uname");
1874:
1875: # First require that the user can be authenticated with their
1.346 raeburn 1876: # old password unless context was 'reset_by_email':
1877:
1.428 raeburn 1878: my ($validated,$failure);
1.346 raeburn 1879: if ($context eq 'reset_by_email') {
1.428 raeburn 1880: if ($lonhost eq '') {
1881: $failure = 'invalid_client';
1882: } else {
1883: $validated = 1;
1884: }
1.346 raeburn 1885: } else {
1886: $validated = &validate_user($udom, $uname, $upass);
1887: }
1.222 foxr 1888: if($validated) {
1889: my $realpasswd = &get_auth_type($udom, $uname); # Defined since authd.
1890:
1891: my ($howpwd,$contentpwd)=split(/:/,$realpasswd);
1892: if ($howpwd eq 'internal') {
1893: &Debug("internal auth");
1894: my $salt=time;
1895: $salt=substr($salt,6,2);
1896: my $ncpass=crypt($npass,$salt);
1897: if(&rewrite_password_file($udom, $uname, "internal:$ncpass")) {
1.428 raeburn 1898: my $msg="Result of password change for $uname: pwchange_success";
1899: if ($lonhost) {
1900: $msg .= " - request originated from: $lonhost";
1901: }
1902: &logthis($msg);
1.222 foxr 1903: &Reply($client, "ok\n", $userinput);
1904: } else {
1905: &logthis("Unable to open $uname passwd "
1906: ."to change password");
1907: &Failure( $client, "non_authorized\n",$userinput);
1908: }
1.346 raeburn 1909: } elsif ($howpwd eq 'unix' && $context ne 'reset_by_email') {
1.287 foxr 1910: my $result = &change_unix_password($uname, $npass);
1.222 foxr 1911: &logthis("Result of password change for $uname: ".
1.287 foxr 1912: $result);
1.387 albertel 1913: &Reply($client, \$result, $userinput);
1.222 foxr 1914: } else {
1915: # this just means that the current password mode is not
1916: # one we know how to change (e.g the kerberos auth modes or
1917: # locally written auth handler).
1918: #
1919: &Failure( $client, "auth_mode_error\n", $userinput);
1920: }
1921:
1.224 foxr 1922: } else {
1.428 raeburn 1923: if ($failure eq '') {
1924: $failure = 'non_authorized';
1925: }
1926: &Failure( $client, "$failure\n", $userinput);
1.222 foxr 1927: }
1928:
1929: return 1;
1930: }
1.263 albertel 1931: ®ister_handler("passwd", \&change_password_handler, 1, 1, 0);
1.222 foxr 1932:
1.225 foxr 1933: #
1934: # Create a new user. User in this case means a lon-capa user.
1935: # The user must either already exist in some authentication realm
1936: # like kerberos or the /etc/passwd. If not, a user completely local to
1937: # this loncapa system is created.
1938: #
1939: # Parameters:
1940: # $cmd - The command that got us here.
1941: # $tail - Tail of the command (remaining parameters).
1942: # $client - File descriptor connected to client.
1943: # Returns
1944: # 0 - Requested to exit, caller should shut down.
1945: # 1 - Continue processing.
1946: # Implicit inputs:
1947: # The authentication systems describe above have their own forms of implicit
1948: # input into the authentication process that are described above.
1949: sub add_user_handler {
1950:
1951: my ($cmd, $tail, $client) = @_;
1952:
1953:
1954: my ($udom,$uname,$umode,$npass)=split(/:/,$tail);
1955: my $userinput = $cmd.":".$tail; # Reconstruct the full request line.
1956:
1957: &Debug("cmd =".$cmd." $udom =".$udom." uname=".$uname);
1958:
1959:
1960: if($udom eq $currentdomainid) { # Reject new users for other domains...
1961:
1962: my $oldumask=umask(0077);
1963: chomp($npass);
1964: $npass=&unescape($npass);
1965: my $passfilename = &password_path($udom, $uname);
1966: &Debug("Password file created will be:".$passfilename);
1967: if (-e $passfilename) {
1968: &Failure( $client, "already_exists\n", $userinput);
1969: } else {
1970: my $fperror='';
1.264 albertel 1971: if (!&mkpath($passfilename)) {
1972: $fperror="error: ".($!+0)." mkdir failed while attempting "
1973: ."makeuser";
1.225 foxr 1974: }
1975: unless ($fperror) {
1976: my $result=&make_passwd_file($uname, $umode,$npass, $passfilename);
1.390 raeburn 1977: &Reply($client,\$result, $userinput); #BUGBUG - could be fail
1.225 foxr 1978: } else {
1.387 albertel 1979: &Failure($client, \$fperror, $userinput);
1.225 foxr 1980: }
1981: }
1982: umask($oldumask);
1983: } else {
1984: &Failure($client, "not_right_domain\n",
1985: $userinput); # Even if we are multihomed.
1986:
1987: }
1988: return 1;
1989:
1990: }
1991: ®ister_handler("makeuser", \&add_user_handler, 1, 1, 0);
1992:
1993: #
1994: # Change the authentication method of a user. Note that this may
1995: # also implicitly change the user's password if, for example, the user is
1996: # joining an existing authentication realm. Known authentication realms at
1997: # this time are:
1998: # internal - Purely internal password file (only loncapa knows this user)
1999: # local - Institutionally written authentication module.
2000: # unix - Unix user (/etc/passwd with or without /etc/shadow).
2001: # kerb4 - kerberos version 4
2002: # kerb5 - kerberos version 5
2003: #
2004: # Parameters:
2005: # $cmd - The command that got us here.
2006: # $tail - Tail of the command (remaining parameters).
2007: # $client - File descriptor connected to client.
2008: # Returns
2009: # 0 - Requested to exit, caller should shut down.
2010: # 1 - Continue processing.
2011: # Implicit inputs:
2012: # The authentication systems describe above have their own forms of implicit
2013: # input into the authentication process that are described above.
1.287 foxr 2014: # NOTE:
2015: # This is also used to change the authentication credential values (e.g. passwd).
2016: #
1.225 foxr 2017: #
2018: sub change_authentication_handler {
2019:
2020: my ($cmd, $tail, $client) = @_;
2021:
2022: my $userinput = "$cmd:$tail"; # Reconstruct user input.
2023:
2024: my ($udom,$uname,$umode,$npass)=split(/:/,$tail);
2025: &Debug("cmd = ".$cmd." domain= ".$udom."uname =".$uname." umode= ".$umode);
2026: if ($udom ne $currentdomainid) {
2027: &Failure( $client, "not_right_domain\n", $client);
2028: } else {
2029:
2030: chomp($npass);
2031:
2032: $npass=&unescape($npass);
1.261 foxr 2033: my $oldauth = &get_auth_type($udom, $uname); # Get old auth info.
1.225 foxr 2034: my $passfilename = &password_path($udom, $uname);
2035: if ($passfilename) { # Not allowed to create a new user!!
1.287 foxr 2036: # If just changing the unix passwd. need to arrange to run
2037: # passwd since otherwise make_passwd_file will run
2038: # lcuseradd which fails if an account already exists
2039: # (to prevent an unscrupulous LONCAPA admin from stealing
2040: # an existing account by overwriting it as a LonCAPA account).
2041:
2042: if(($oldauth =~/^unix/) && ($umode eq "unix")) {
2043: my $result = &change_unix_password($uname, $npass);
2044: &logthis("Result of password change for $uname: ".$result);
2045: if ($result eq "ok") {
1.390 raeburn 2046: &Reply($client, \$result);
1.288 albertel 2047: } else {
1.387 albertel 2048: &Failure($client, \$result);
1.287 foxr 2049: }
1.288 albertel 2050: } else {
1.287 foxr 2051: my $result=&make_passwd_file($uname, $umode,$npass,$passfilename);
2052: #
2053: # If the current auth mode is internal, and the old auth mode was
2054: # unix, or krb*, and the user is an author for this domain,
2055: # re-run manage_permissions for that role in order to be able
2056: # to take ownership of the construction space back to www:www
2057: #
2058:
2059:
2060: if( (($oldauth =~ /^unix/) && ($umode eq "internal")) ||
2061: (($oldauth =~ /^internal/) && ($umode eq "unix")) ) {
2062: if(&is_author($udom, $uname)) {
2063: &Debug(" Need to manage author permissions...");
2064: &manage_permissions("/$udom/_au", $udom, $uname, "$umode:");
2065: }
1.261 foxr 2066: }
1.387 albertel 2067: &Reply($client, \$result, $userinput);
1.261 foxr 2068: }
2069:
2070:
1.225 foxr 2071: } else {
1.251 foxr 2072: &Failure($client, "non_authorized\n", $userinput); # Fail the user now.
1.225 foxr 2073: }
2074: }
2075: return 1;
2076: }
2077: ®ister_handler("changeuserauth", \&change_authentication_handler, 1,1, 0);
2078:
2079: #
2080: # Determines if this is the home server for a user. The home server
2081: # for a user will have his/her lon-capa passwd file. Therefore all we need
2082: # to do is determine if this file exists.
2083: #
2084: # Parameters:
2085: # $cmd - The command that got us here.
2086: # $tail - Tail of the command (remaining parameters).
2087: # $client - File descriptor connected to client.
2088: # Returns
2089: # 0 - Requested to exit, caller should shut down.
2090: # 1 - Continue processing.
2091: # Implicit inputs:
2092: # The authentication systems describe above have their own forms of implicit
2093: # input into the authentication process that are described above.
2094: #
2095: sub is_home_handler {
2096: my ($cmd, $tail, $client) = @_;
2097:
2098: my $userinput = "$cmd:$tail";
2099:
2100: my ($udom,$uname)=split(/:/,$tail);
2101: chomp($uname);
2102: my $passfile = &password_filename($udom, $uname);
2103: if($passfile) {
2104: &Reply( $client, "found\n", $userinput);
2105: } else {
2106: &Failure($client, "not_found\n", $userinput);
2107: }
2108: return 1;
2109: }
2110: ®ister_handler("home", \&is_home_handler, 0,1,0);
2111:
2112: #
1.434 www 2113: # Process an update request for a resource.
2114: # A resource has been modified that we hold a subscription to.
1.225 foxr 2115: # If the resource is not local, then we must update, or at least invalidate our
2116: # cached copy of the resource.
2117: # Parameters:
2118: # $cmd - The command that got us here.
2119: # $tail - Tail of the command (remaining parameters).
2120: # $client - File descriptor connected to client.
2121: # Returns
2122: # 0 - Requested to exit, caller should shut down.
2123: # 1 - Continue processing.
2124: # Implicit inputs:
2125: # The authentication systems describe above have their own forms of implicit
2126: # input into the authentication process that are described above.
2127: #
2128: sub update_resource_handler {
2129:
2130: my ($cmd, $tail, $client) = @_;
2131:
2132: my $userinput = "$cmd:$tail";
2133:
2134: my $fname= $tail; # This allows interactive testing
2135:
2136:
2137: my $ownership=ishome($fname);
2138: if ($ownership eq 'not_owner') {
2139: if (-e $fname) {
1.434 www 2140: # Delete preview file, if exists
2141: unlink("$fname.tmp");
2142: # Get usage stats
1.225 foxr 2143: my ($dev,$ino,$mode,$nlink,$uid,$gid,$rdev,$size,
2144: $atime,$mtime,$ctime,$blksize,$blocks)=stat($fname);
2145: my $now=time;
2146: my $since=$now-$atime;
1.434 www 2147: # If the file has not been used within lonExpire seconds,
2148: # unsubscribe from it and delete local copy
1.225 foxr 2149: if ($since>$perlvar{'lonExpire'}) {
1.365 albertel 2150: my $reply=&Apache::lonnet::reply("unsub:$fname","$clientname");
1.308 albertel 2151: &devalidate_meta_cache($fname);
1.225 foxr 2152: unlink("$fname");
1.334 albertel 2153: unlink("$fname.meta");
1.225 foxr 2154: } else {
1.434 www 2155: # Yes, this is in active use. Get a fresh copy. Since it might be in
2156: # very active use and huge (like a movie), copy it to "in.transfer" filename first.
1.225 foxr 2157: my $transname="$fname.in.transfer";
1.365 albertel 2158: my $remoteurl=&Apache::lonnet::reply("sub:$fname","$clientname");
1.225 foxr 2159: my $response;
1.455 www 2160: # FIXME: cannot replicate files that take more than two minutes to transfer?
2161: # alarm(120);
2162: # FIXME: this should use the LWP mechanism, not internal alarms.
2163: alarm(1200);
1.225 foxr 2164: {
2165: my $ua=new LWP::UserAgent;
2166: my $request=new HTTP::Request('GET',"$remoteurl");
2167: $response=$ua->request($request,$transname);
2168: }
2169: alarm(0);
2170: if ($response->is_error()) {
1.455 www 2171: # FIXME: we should probably clean up here instead of just whine
1.225 foxr 2172: unlink($transname);
2173: my $message=$response->status_line;
2174: &logthis("LWP GET: $message for $fname ($remoteurl)");
2175: } else {
2176: if ($remoteurl!~/\.meta$/) {
1.455 www 2177: # FIXME: isn't there an internal LWP mechanism for this?
1.225 foxr 2178: alarm(120);
2179: {
2180: my $ua=new LWP::UserAgent;
2181: my $mrequest=new HTTP::Request('GET',$remoteurl.'.meta');
2182: my $mresponse=$ua->request($mrequest,$fname.'.meta');
2183: if ($mresponse->is_error()) {
2184: unlink($fname.'.meta');
2185: }
2186: }
2187: alarm(0);
2188: }
1.434 www 2189: # we successfully transfered, copy file over to real name
1.225 foxr 2190: rename($transname,$fname);
1.308 albertel 2191: &devalidate_meta_cache($fname);
1.225 foxr 2192: }
2193: }
2194: &Reply( $client, "ok\n", $userinput);
2195: } else {
2196: &Failure($client, "not_found\n", $userinput);
2197: }
2198: } else {
2199: &Failure($client, "rejected\n", $userinput);
2200: }
2201: return 1;
2202: }
2203: ®ister_handler("update", \&update_resource_handler, 0 ,1, 0);
2204:
1.308 albertel 2205: sub devalidate_meta_cache {
2206: my ($url) = @_;
2207: use Cache::Memcached;
2208: my $memcache = new Cache::Memcached({'servers'=>['127.0.0.1:11211']});
1.365 albertel 2209: $url = &Apache::lonnet::declutter($url);
1.308 albertel 2210: $url =~ s-\.meta$--;
2211: my $id = &escape('meta:'.$url);
2212: $memcache->delete($id);
2213: }
2214:
1.225 foxr 2215: #
1.226 foxr 2216: # Fetch a user file from a remote server to the user's home directory
2217: # userfiles subdir.
1.225 foxr 2218: # Parameters:
2219: # $cmd - The command that got us here.
2220: # $tail - Tail of the command (remaining parameters).
2221: # $client - File descriptor connected to client.
2222: # Returns
2223: # 0 - Requested to exit, caller should shut down.
2224: # 1 - Continue processing.
2225: #
2226: sub fetch_user_file_handler {
2227:
2228: my ($cmd, $tail, $client) = @_;
2229:
2230: my $userinput = "$cmd:$tail";
2231: my $fname = $tail;
1.232 foxr 2232: my ($udom,$uname,$ufile) = ($fname =~ m|^([^/]+)/([^/]+)/(.+)$|);
1.225 foxr 2233: my $udir=&propath($udom,$uname).'/userfiles';
2234: unless (-e $udir) {
2235: mkdir($udir,0770);
2236: }
1.232 foxr 2237: Debug("fetch user file for $fname");
1.225 foxr 2238: if (-e $udir) {
2239: $ufile=~s/^[\.\~]+//;
1.232 foxr 2240:
2241: # IF necessary, create the path right down to the file.
2242: # Note that any regular files in the way of this path are
2243: # wiped out to deal with some earlier folly of mine.
2244:
1.267 raeburn 2245: if (!&mkpath($udir.'/'.$ufile)) {
1.264 albertel 2246: &Failure($client, "unable_to_create\n", $userinput);
1.232 foxr 2247: }
2248:
1.225 foxr 2249: my $destname=$udir.'/'.$ufile;
2250: my $transname=$udir.'/'.$ufile.'.in.transit';
2251: my $remoteurl='http://'.$clientip.'/userfiles/'.$fname;
2252: my $response;
1.232 foxr 2253: Debug("Remote URL : $remoteurl Transfername $transname Destname: $destname");
1.225 foxr 2254: alarm(120);
2255: {
2256: my $ua=new LWP::UserAgent;
2257: my $request=new HTTP::Request('GET',"$remoteurl");
2258: $response=$ua->request($request,$transname);
2259: }
2260: alarm(0);
2261: if ($response->is_error()) {
2262: unlink($transname);
2263: my $message=$response->status_line;
2264: &logthis("LWP GET: $message for $fname ($remoteurl)");
2265: &Failure($client, "failed\n", $userinput);
2266: } else {
1.232 foxr 2267: Debug("Renaming $transname to $destname");
1.225 foxr 2268: if (!rename($transname,$destname)) {
2269: &logthis("Unable to move $transname to $destname");
2270: unlink($transname);
2271: &Failure($client, "failed\n", $userinput);
2272: } else {
2273: &Reply($client, "ok\n", $userinput);
2274: }
2275: }
2276: } else {
2277: &Failure($client, "not_home\n", $userinput);
2278: }
2279: return 1;
2280: }
2281: ®ister_handler("fetchuserfile", \&fetch_user_file_handler, 0, 1, 0);
2282:
1.226 foxr 2283: #
2284: # Remove a file from a user's home directory userfiles subdirectory.
2285: # Parameters:
2286: # cmd - the Lond request keyword that got us here.
2287: # tail - the part of the command past the keyword.
2288: # client- File descriptor connected with the client.
2289: #
2290: # Returns:
2291: # 1 - Continue processing.
2292: sub remove_user_file_handler {
2293: my ($cmd, $tail, $client) = @_;
2294:
2295: my ($fname) = split(/:/, $tail); # Get rid of any tailing :'s lonc may have sent.
2296:
2297: my ($udom,$uname,$ufile) = ($fname =~ m|^([^/]+)/([^/]+)/(.+)$|);
2298: if ($ufile =~m|/\.\./|) {
2299: # any files paths with /../ in them refuse
2300: # to deal with
2301: &Failure($client, "refused\n", "$cmd:$tail");
2302: } else {
2303: my $udir = &propath($udom,$uname);
2304: if (-e $udir) {
2305: my $file=$udir.'/userfiles/'.$ufile;
2306: if (-e $file) {
1.253 foxr 2307: #
2308: # If the file is a regular file unlink is fine...
2309: # However it's possible the client wants a dir.
2310: # removed, in which case rmdir is more approprate:
2311: #
1.240 banghart 2312: if (-f $file){
1.241 albertel 2313: unlink($file);
2314: } elsif(-d $file) {
2315: rmdir($file);
1.240 banghart 2316: }
1.226 foxr 2317: if (-e $file) {
1.253 foxr 2318: # File is still there after we deleted it ?!?
2319:
1.226 foxr 2320: &Failure($client, "failed\n", "$cmd:$tail");
2321: } else {
2322: &Reply($client, "ok\n", "$cmd:$tail");
2323: }
2324: } else {
2325: &Failure($client, "not_found\n", "$cmd:$tail");
2326: }
2327: } else {
2328: &Failure($client, "not_home\n", "$cmd:$tail");
2329: }
2330: }
2331: return 1;
2332: }
2333: ®ister_handler("removeuserfile", \&remove_user_file_handler, 0,1,0);
2334:
1.236 albertel 2335: #
2336: # make a directory in a user's home directory userfiles subdirectory.
2337: # Parameters:
2338: # cmd - the Lond request keyword that got us here.
2339: # tail - the part of the command past the keyword.
2340: # client- File descriptor connected with the client.
2341: #
2342: # Returns:
2343: # 1 - Continue processing.
2344: sub mkdir_user_file_handler {
2345: my ($cmd, $tail, $client) = @_;
2346:
2347: my ($dir) = split(/:/, $tail); # Get rid of any tailing :'s lonc may have sent.
2348: $dir=&unescape($dir);
2349: my ($udom,$uname,$ufile) = ($dir =~ m|^([^/]+)/([^/]+)/(.+)$|);
2350: if ($ufile =~m|/\.\./|) {
2351: # any files paths with /../ in them refuse
2352: # to deal with
2353: &Failure($client, "refused\n", "$cmd:$tail");
2354: } else {
2355: my $udir = &propath($udom,$uname);
2356: if (-e $udir) {
1.264 albertel 2357: my $newdir=$udir.'/userfiles/'.$ufile.'/';
2358: if (!&mkpath($newdir)) {
2359: &Failure($client, "failed\n", "$cmd:$tail");
1.236 albertel 2360: }
1.264 albertel 2361: &Reply($client, "ok\n", "$cmd:$tail");
1.236 albertel 2362: } else {
2363: &Failure($client, "not_home\n", "$cmd:$tail");
2364: }
2365: }
2366: return 1;
2367: }
2368: ®ister_handler("mkdiruserfile", \&mkdir_user_file_handler, 0,1,0);
2369:
1.237 albertel 2370: #
2371: # rename a file in a user's home directory userfiles subdirectory.
2372: # Parameters:
2373: # cmd - the Lond request keyword that got us here.
2374: # tail - the part of the command past the keyword.
2375: # client- File descriptor connected with the client.
2376: #
2377: # Returns:
2378: # 1 - Continue processing.
2379: sub rename_user_file_handler {
2380: my ($cmd, $tail, $client) = @_;
2381:
2382: my ($udom,$uname,$old,$new) = split(/:/, $tail);
2383: $old=&unescape($old);
2384: $new=&unescape($new);
2385: if ($new =~m|/\.\./| || $old =~m|/\.\./|) {
2386: # any files paths with /../ in them refuse to deal with
2387: &Failure($client, "refused\n", "$cmd:$tail");
2388: } else {
2389: my $udir = &propath($udom,$uname);
2390: if (-e $udir) {
2391: my $oldfile=$udir.'/userfiles/'.$old;
2392: my $newfile=$udir.'/userfiles/'.$new;
2393: if (-e $newfile) {
2394: &Failure($client, "exists\n", "$cmd:$tail");
2395: } elsif (! -e $oldfile) {
2396: &Failure($client, "not_found\n", "$cmd:$tail");
2397: } else {
2398: if (!rename($oldfile,$newfile)) {
2399: &Failure($client, "failed\n", "$cmd:$tail");
2400: } else {
2401: &Reply($client, "ok\n", "$cmd:$tail");
2402: }
2403: }
2404: } else {
2405: &Failure($client, "not_home\n", "$cmd:$tail");
2406: }
2407: }
2408: return 1;
2409: }
2410: ®ister_handler("renameuserfile", \&rename_user_file_handler, 0,1,0);
2411:
1.227 foxr 2412: #
1.382 albertel 2413: # Checks if the specified user has an active session on the server
2414: # return ok if so, not_found if not
2415: #
2416: # Parameters:
2417: # cmd - The request keyword that dispatched to tus.
2418: # tail - The tail of the request (colon separated parameters).
2419: # client - Filehandle open on the client.
2420: # Return:
2421: # 1.
2422: sub user_has_session_handler {
2423: my ($cmd, $tail, $client) = @_;
2424:
2425: my ($udom, $uname) = map { &unescape($_) } (split(/:/, $tail));
2426:
2427: opendir(DIR,$perlvar{'lonIDsDir'});
2428: my $filename;
2429: while ($filename=readdir(DIR)) {
2430: last if ($filename=~/^\Q$uname\E_\d+_\Q$udom\E_/);
2431: }
2432: if ($filename) {
2433: &Reply($client, "ok\n", "$cmd:$tail");
2434: } else {
2435: &Failure($client, "not_found\n", "$cmd:$tail");
2436: }
2437: return 1;
2438:
2439: }
2440: ®ister_handler("userhassession", \&user_has_session_handler, 0,1,0);
2441:
2442: #
1.263 albertel 2443: # Authenticate access to a user file by checking that the token the user's
2444: # passed also exists in their session file
1.227 foxr 2445: #
2446: # Parameters:
2447: # cmd - The request keyword that dispatched to tus.
2448: # tail - The tail of the request (colon separated parameters).
2449: # client - Filehandle open on the client.
2450: # Return:
2451: # 1.
2452: sub token_auth_user_file_handler {
2453: my ($cmd, $tail, $client) = @_;
2454:
2455: my ($fname, $session) = split(/:/, $tail);
2456:
2457: chomp($session);
1.393 raeburn 2458: my $reply="non_auth";
1.343 albertel 2459: my $file = $perlvar{'lonIDsDir'}.'/'.$session.'.id';
2460: if (open(ENVIN,"$file")) {
1.332 albertel 2461: flock(ENVIN,LOCK_SH);
1.343 albertel 2462: tie(my %disk_env,'GDBM_File',"$file",&GDBM_READER(),0640);
2463: if (exists($disk_env{"userfile.$fname"})) {
1.393 raeburn 2464: $reply="ok";
1.343 albertel 2465: } else {
2466: foreach my $envname (keys(%disk_env)) {
2467: if ($envname=~ m|^userfile\.\Q$fname\E|) {
1.393 raeburn 2468: $reply="ok";
1.343 albertel 2469: last;
2470: }
2471: }
1.227 foxr 2472: }
1.343 albertel 2473: untie(%disk_env);
1.227 foxr 2474: close(ENVIN);
1.387 albertel 2475: &Reply($client, \$reply, "$cmd:$tail");
1.227 foxr 2476: } else {
2477: &Failure($client, "invalid_token\n", "$cmd:$tail");
2478: }
2479: return 1;
2480:
2481: }
2482: ®ister_handler("tokenauthuserfile", \&token_auth_user_file_handler, 0,1,0);
1.229 foxr 2483:
2484: #
2485: # Unsubscribe from a resource.
2486: #
2487: # Parameters:
2488: # $cmd - The command that got us here.
2489: # $tail - Tail of the command (remaining parameters).
2490: # $client - File descriptor connected to client.
2491: # Returns
2492: # 0 - Requested to exit, caller should shut down.
2493: # 1 - Continue processing.
2494: #
2495: sub unsubscribe_handler {
2496: my ($cmd, $tail, $client) = @_;
2497:
2498: my $userinput= "$cmd:$tail";
2499:
2500: my ($fname) = split(/:/,$tail); # Split in case there's extrs.
2501:
2502: &Debug("Unsubscribing $fname");
2503: if (-e $fname) {
2504: &Debug("Exists");
2505: &Reply($client, &unsub($fname,$clientip), $userinput);
2506: } else {
2507: &Failure($client, "not_found\n", $userinput);
2508: }
2509: return 1;
2510: }
2511: ®ister_handler("unsub", \&unsubscribe_handler, 0, 1, 0);
1.263 albertel 2512:
1.230 foxr 2513: # Subscribe to a resource
2514: #
2515: # Parameters:
2516: # $cmd - The command that got us here.
2517: # $tail - Tail of the command (remaining parameters).
2518: # $client - File descriptor connected to client.
2519: # Returns
2520: # 0 - Requested to exit, caller should shut down.
2521: # 1 - Continue processing.
2522: #
2523: sub subscribe_handler {
2524: my ($cmd, $tail, $client)= @_;
2525:
2526: my $userinput = "$cmd:$tail";
2527:
2528: &Reply( $client, &subscribe($userinput,$clientip), $userinput);
2529:
2530: return 1;
2531: }
2532: ®ister_handler("sub", \&subscribe_handler, 0, 1, 0);
2533:
2534: #
1.379 albertel 2535: # Determine the latest version of a resource (it looks for the highest
2536: # past version and then returns that +1)
1.230 foxr 2537: #
2538: # Parameters:
2539: # $cmd - The command that got us here.
2540: # $tail - Tail of the command (remaining parameters).
1.379 albertel 2541: # (Should consist of an absolute path to a file)
1.230 foxr 2542: # $client - File descriptor connected to client.
2543: # Returns
2544: # 0 - Requested to exit, caller should shut down.
2545: # 1 - Continue processing.
2546: #
2547: sub current_version_handler {
2548: my ($cmd, $tail, $client) = @_;
2549:
2550: my $userinput= "$cmd:$tail";
2551:
2552: my $fname = $tail;
2553: &Reply( $client, ¤tversion($fname)."\n", $userinput);
2554: return 1;
2555:
2556: }
2557: ®ister_handler("currentversion", \¤t_version_handler, 0, 1, 0);
2558:
2559: # Make an entry in a user's activity log.
2560: #
2561: # Parameters:
2562: # $cmd - The command that got us here.
2563: # $tail - Tail of the command (remaining parameters).
2564: # $client - File descriptor connected to client.
2565: # Returns
2566: # 0 - Requested to exit, caller should shut down.
2567: # 1 - Continue processing.
2568: #
2569: sub activity_log_handler {
2570: my ($cmd, $tail, $client) = @_;
2571:
2572:
2573: my $userinput= "$cmd:$tail";
2574:
2575: my ($udom,$uname,$what)=split(/:/,$tail);
2576: chomp($what);
2577: my $proname=&propath($udom,$uname);
2578: my $now=time;
2579: my $hfh;
2580: if ($hfh=IO::File->new(">>$proname/activity.log")) {
2581: print $hfh "$now:$clientname:$what\n";
2582: &Reply( $client, "ok\n", $userinput);
2583: } else {
2584: &Failure($client, "error: ".($!+0)." IO::File->new Failed "
2585: ."while attempting log\n",
2586: $userinput);
2587: }
2588:
2589: return 1;
2590: }
1.263 albertel 2591: ®ister_handler("log", \&activity_log_handler, 0, 1, 0);
1.230 foxr 2592:
2593: #
2594: # Put a namespace entry in a user profile hash.
2595: # My druthers would be for this to be an encrypted interaction too.
2596: # anything that might be an inadvertent covert channel about either
2597: # user authentication or user personal information....
2598: #
2599: # Parameters:
2600: # $cmd - The command that got us here.
2601: # $tail - Tail of the command (remaining parameters).
2602: # $client - File descriptor connected to client.
2603: # Returns
2604: # 0 - Requested to exit, caller should shut down.
2605: # 1 - Continue processing.
2606: #
2607: sub put_user_profile_entry {
2608: my ($cmd, $tail, $client) = @_;
1.229 foxr 2609:
1.230 foxr 2610: my $userinput = "$cmd:$tail";
2611:
1.242 raeburn 2612: my ($udom,$uname,$namespace,$what) =split(/:/,$tail,4);
1.230 foxr 2613: if ($namespace ne 'roles') {
2614: chomp($what);
2615: my $hashref = &tie_user_hash($udom, $uname, $namespace,
2616: &GDBM_WRCREAT(),"P",$what);
2617: if($hashref) {
2618: my @pairs=split(/\&/,$what);
2619: foreach my $pair (@pairs) {
2620: my ($key,$value)=split(/=/,$pair);
2621: $hashref->{$key}=$value;
2622: }
1.311 albertel 2623: if (&untie_user_hash($hashref)) {
1.230 foxr 2624: &Reply( $client, "ok\n", $userinput);
2625: } else {
2626: &Failure($client, "error: ".($!+0)." untie(GDBM) failed ".
2627: "while attempting put\n",
2628: $userinput);
2629: }
2630: } else {
1.316 albertel 2631: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
1.230 foxr 2632: "while attempting put\n", $userinput);
2633: }
2634: } else {
2635: &Failure( $client, "refused\n", $userinput);
2636: }
2637:
2638: return 1;
2639: }
2640: ®ister_handler("put", \&put_user_profile_entry, 0, 1, 0);
2641:
1.283 albertel 2642: # Put a piece of new data in hash, returns error if entry already exists
2643: # Parameters:
2644: # $cmd - The command that got us here.
2645: # $tail - Tail of the command (remaining parameters).
2646: # $client - File descriptor connected to client.
2647: # Returns
2648: # 0 - Requested to exit, caller should shut down.
2649: # 1 - Continue processing.
2650: #
2651: sub newput_user_profile_entry {
2652: my ($cmd, $tail, $client) = @_;
2653:
2654: my $userinput = "$cmd:$tail";
2655:
2656: my ($udom,$uname,$namespace,$what) =split(/:/,$tail,4);
2657: if ($namespace eq 'roles') {
2658: &Failure( $client, "refused\n", $userinput);
2659: return 1;
2660: }
2661:
2662: chomp($what);
2663:
2664: my $hashref = &tie_user_hash($udom, $uname, $namespace,
2665: &GDBM_WRCREAT(),"N",$what);
2666: if(!$hashref) {
1.316 albertel 2667: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
1.283 albertel 2668: "while attempting put\n", $userinput);
2669: return 1;
2670: }
2671:
2672: my @pairs=split(/\&/,$what);
2673: foreach my $pair (@pairs) {
2674: my ($key,$value)=split(/=/,$pair);
2675: if (exists($hashref->{$key})) {
2676: &Failure($client, "key_exists: ".$key."\n",$userinput);
2677: return 1;
2678: }
2679: }
2680:
2681: foreach my $pair (@pairs) {
2682: my ($key,$value)=split(/=/,$pair);
2683: $hashref->{$key}=$value;
2684: }
2685:
1.311 albertel 2686: if (&untie_user_hash($hashref)) {
1.283 albertel 2687: &Reply( $client, "ok\n", $userinput);
2688: } else {
2689: &Failure($client, "error: ".($!+0)." untie(GDBM) failed ".
2690: "while attempting put\n",
2691: $userinput);
2692: }
2693: return 1;
2694: }
2695: ®ister_handler("newput", \&newput_user_profile_entry, 0, 1, 0);
2696:
1.230 foxr 2697: #
2698: # Increment a profile entry in the user history file.
2699: # The history contains keyword value pairs. In this case,
2700: # The value itself is a pair of numbers. The first, the current value
2701: # the second an increment that this function applies to the current
2702: # value.
2703: #
2704: # Parameters:
2705: # $cmd - The command that got us here.
2706: # $tail - Tail of the command (remaining parameters).
2707: # $client - File descriptor connected to client.
2708: # Returns
2709: # 0 - Requested to exit, caller should shut down.
2710: # 1 - Continue processing.
2711: #
2712: sub increment_user_value_handler {
2713: my ($cmd, $tail, $client) = @_;
2714:
2715: my $userinput = "$cmd:$tail";
2716:
2717: my ($udom,$uname,$namespace,$what) =split(/:/,$tail);
2718: if ($namespace ne 'roles') {
2719: chomp($what);
2720: my $hashref = &tie_user_hash($udom, $uname,
2721: $namespace, &GDBM_WRCREAT(),
2722: "P",$what);
2723: if ($hashref) {
2724: my @pairs=split(/\&/,$what);
2725: foreach my $pair (@pairs) {
2726: my ($key,$value)=split(/=/,$pair);
1.284 raeburn 2727: $value = &unescape($value);
1.230 foxr 2728: # We could check that we have a number...
2729: if (! defined($value) || $value eq '') {
2730: $value = 1;
2731: }
2732: $hashref->{$key}+=$value;
1.284 raeburn 2733: if ($namespace eq 'nohist_resourcetracker') {
2734: if ($hashref->{$key} < 0) {
2735: $hashref->{$key} = 0;
2736: }
2737: }
1.230 foxr 2738: }
1.311 albertel 2739: if (&untie_user_hash($hashref)) {
1.230 foxr 2740: &Reply( $client, "ok\n", $userinput);
2741: } else {
2742: &Failure($client, "error: ".($!+0)." untie(GDBM) failed ".
2743: "while attempting inc\n", $userinput);
2744: }
2745: } else {
2746: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
2747: "while attempting inc\n", $userinput);
2748: }
2749: } else {
2750: &Failure($client, "refused\n", $userinput);
2751: }
2752:
2753: return 1;
2754: }
2755: ®ister_handler("inc", \&increment_user_value_handler, 0, 1, 0);
2756:
2757: #
2758: # Put a new role for a user. Roles are LonCAPA's packaging of permissions.
2759: # Each 'role' a user has implies a set of permissions. Adding a new role
2760: # for a person grants the permissions packaged with that role
2761: # to that user when the role is selected.
2762: #
2763: # Parameters:
2764: # $cmd - The command string (rolesput).
2765: # $tail - The remainder of the request line. For rolesput this
2766: # consists of a colon separated list that contains:
2767: # The domain and user that is granting the role (logged).
2768: # The domain and user that is getting the role.
2769: # The roles being granted as a set of & separated pairs.
2770: # each pair a key value pair.
2771: # $client - File descriptor connected to the client.
2772: # Returns:
2773: # 0 - If the daemon should exit
2774: # 1 - To continue processing.
2775: #
2776: #
2777: sub roles_put_handler {
2778: my ($cmd, $tail, $client) = @_;
2779:
2780: my $userinput = "$cmd:$tail";
2781:
2782: my ( $exedom, $exeuser, $udom, $uname, $what) = split(/:/,$tail);
2783:
2784:
2785: my $namespace='roles';
2786: chomp($what);
2787: my $hashref = &tie_user_hash($udom, $uname, $namespace,
2788: &GDBM_WRCREAT(), "P",
2789: "$exedom:$exeuser:$what");
2790: #
2791: # Log the attempt to set a role. The {}'s here ensure that the file
2792: # handle is open for the minimal amount of time. Since the flush
2793: # is done on close this improves the chances the log will be an un-
2794: # corrupted ordered thing.
2795: if ($hashref) {
1.261 foxr 2796: my $pass_entry = &get_auth_type($udom, $uname);
2797: my ($auth_type,$pwd) = split(/:/, $pass_entry);
2798: $auth_type = $auth_type.":";
1.230 foxr 2799: my @pairs=split(/\&/,$what);
2800: foreach my $pair (@pairs) {
2801: my ($key,$value)=split(/=/,$pair);
2802: &manage_permissions($key, $udom, $uname,
1.260 foxr 2803: $auth_type);
1.230 foxr 2804: $hashref->{$key}=$value;
2805: }
1.311 albertel 2806: if (&untie_user_hash($hashref)) {
1.230 foxr 2807: &Reply($client, "ok\n", $userinput);
2808: } else {
2809: &Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ".
2810: "while attempting rolesput\n", $userinput);
2811: }
2812: } else {
2813: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
2814: "while attempting rolesput\n", $userinput);
2815: }
2816: return 1;
2817: }
2818: ®ister_handler("rolesput", \&roles_put_handler, 1,1,0); # Encoded client only.
2819:
2820: #
1.231 foxr 2821: # Deletes (removes) a role for a user. This is equivalent to removing
2822: # a permissions package associated with the role from the user's profile.
2823: #
2824: # Parameters:
2825: # $cmd - The command (rolesdel)
2826: # $tail - The remainder of the request line. This consists
2827: # of:
2828: # The domain and user requesting the change (logged)
2829: # The domain and user being changed.
2830: # The roles being revoked. These are shipped to us
2831: # as a bunch of & separated role name keywords.
2832: # $client - The file handle open on the client.
2833: # Returns:
2834: # 1 - Continue processing
2835: # 0 - Exit.
2836: #
2837: sub roles_delete_handler {
2838: my ($cmd, $tail, $client) = @_;
2839:
2840: my $userinput = "$cmd:$tail";
2841:
2842: my ($exedom,$exeuser,$udom,$uname,$what)=split(/:/,$tail);
2843: &Debug("cmd = ".$cmd." exedom= ".$exedom."user = ".$exeuser." udom=".$udom.
2844: "what = ".$what);
2845: my $namespace='roles';
2846: chomp($what);
2847: my $hashref = &tie_user_hash($udom, $uname, $namespace,
2848: &GDBM_WRCREAT(), "D",
2849: "$exedom:$exeuser:$what");
2850:
2851: if ($hashref) {
2852: my @rolekeys=split(/\&/,$what);
2853:
2854: foreach my $key (@rolekeys) {
2855: delete $hashref->{$key};
2856: }
1.315 albertel 2857: if (&untie_user_hash($hashref)) {
1.231 foxr 2858: &Reply($client, "ok\n", $userinput);
2859: } else {
2860: &Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ".
2861: "while attempting rolesdel\n", $userinput);
2862: }
2863: } else {
2864: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
2865: "while attempting rolesdel\n", $userinput);
2866: }
2867:
2868: return 1;
2869: }
2870: ®ister_handler("rolesdel", \&roles_delete_handler, 1,1, 0); # Encoded client only
2871:
2872: # Unencrypted get from a user's profile database. See
2873: # GetProfileEntryEncrypted for a version that does end-to-end encryption.
2874: # This function retrieves a keyed item from a specific named database in the
2875: # user's directory.
2876: #
2877: # Parameters:
2878: # $cmd - Command request keyword (get).
2879: # $tail - Tail of the command. This is a colon separated list
2880: # consisting of the domain and username that uniquely
2881: # identifies the profile,
2882: # The 'namespace' which selects the gdbm file to
2883: # do the lookup in,
2884: # & separated list of keys to lookup. Note that
2885: # the values are returned as an & separated list too.
2886: # $client - File descriptor open on the client.
2887: # Returns:
2888: # 1 - Continue processing.
2889: # 0 - Exit.
2890: #
2891: sub get_profile_entry {
2892: my ($cmd, $tail, $client) = @_;
2893:
2894: my $userinput= "$cmd:$tail";
2895:
2896: my ($udom,$uname,$namespace,$what) = split(/:/,$tail);
2897: chomp($what);
1.255 foxr 2898:
1.390 raeburn 2899:
1.255 foxr 2900: my $replystring = read_profile($udom, $uname, $namespace, $what);
2901: my ($first) = split(/:/,$replystring);
2902: if($first ne "error") {
1.387 albertel 2903: &Reply($client, \$replystring, $userinput);
1.231 foxr 2904: } else {
1.255 foxr 2905: &Failure($client, $replystring." while attempting get\n", $userinput);
1.231 foxr 2906: }
2907: return 1;
1.255 foxr 2908:
2909:
1.231 foxr 2910: }
2911: ®ister_handler("get", \&get_profile_entry, 0,1,0);
2912:
2913: #
2914: # Process the encrypted get request. Note that the request is sent
2915: # in clear, but the reply is encrypted. This is a small covert channel:
2916: # information about the sensitive keys is given to the snooper. Just not
2917: # information about the values of the sensitive key. Hmm if I wanted to
2918: # know these I'd snoop for the egets. Get the profile item names from them
2919: # and then issue a get for them since there's no enforcement of the
2920: # requirement of an encrypted get for particular profile items. If I
2921: # were re-doing this, I'd force the request to be encrypted as well as the
2922: # reply. I'd also just enforce encrypted transactions for all gets since
2923: # that would prevent any covert channel snooping.
2924: #
2925: # Parameters:
2926: # $cmd - Command keyword of request (eget).
2927: # $tail - Tail of the command. See GetProfileEntry
# for more information about this.
2928: # $client - File open on the client.
2929: # Returns:
2930: # 1 - Continue processing
2931: # 0 - server should exit.
2932: sub get_profile_entry_encrypted {
2933: my ($cmd, $tail, $client) = @_;
2934:
2935: my $userinput = "$cmd:$tail";
2936:
1.339 albertel 2937: my ($udom,$uname,$namespace,$what) = split(/:/,$tail);
1.231 foxr 2938: chomp($what);
1.255 foxr 2939: my $qresult = read_profile($udom, $uname, $namespace, $what);
2940: my ($first) = split(/:/, $qresult);
2941: if($first ne "error") {
2942:
2943: if ($cipher) {
2944: my $cmdlength=length($qresult);
2945: $qresult.=" ";
2946: my $encqresult='';
2947: for(my $encidx=0;$encidx<=$cmdlength;$encidx+=8) {
2948: $encqresult.= unpack("H16",
2949: $cipher->encrypt(substr($qresult,
2950: $encidx,
2951: 8)));
2952: }
2953: &Reply( $client, "enc:$cmdlength:$encqresult\n", $userinput);
2954: } else {
1.231 foxr 2955: &Failure( $client, "error:no_key\n", $userinput);
2956: }
2957: } else {
1.255 foxr 2958: &Failure($client, "$qresult while attempting eget\n", $userinput);
2959:
1.231 foxr 2960: }
2961:
2962: return 1;
2963: }
1.255 foxr 2964: ®ister_handler("eget", \&get_profile_entry_encrypted, 0, 1, 0);
1.263 albertel 2965:
1.231 foxr 2966: #
2967: # Deletes a key in a user profile database.
2968: #
2969: # Parameters:
2970: # $cmd - Command keyword (del).
2971: # $tail - Command tail. IN this case a colon
2972: # separated list containing:
2973: # The domain and user that identifies uniquely
2974: # the identity of the user.
2975: # The profile namespace (name of the profile
2976: # database file).
2977: # & separated list of keywords to delete.
2978: # $client - File open on client socket.
2979: # Returns:
2980: # 1 - Continue processing
2981: # 0 - Exit server.
2982: #
2983: #
2984: sub delete_profile_entry {
2985: my ($cmd, $tail, $client) = @_;
2986:
2987: my $userinput = "cmd:$tail";
2988:
2989: my ($udom,$uname,$namespace,$what) = split(/:/,$tail);
2990: chomp($what);
2991: my $hashref = &tie_user_hash($udom, $uname, $namespace,
2992: &GDBM_WRCREAT(),
2993: "D",$what);
2994: if ($hashref) {
2995: my @keys=split(/\&/,$what);
2996: foreach my $key (@keys) {
2997: delete($hashref->{$key});
2998: }
1.315 albertel 2999: if (&untie_user_hash($hashref)) {
1.231 foxr 3000: &Reply($client, "ok\n", $userinput);
3001: } else {
3002: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
3003: "while attempting del\n", $userinput);
3004: }
3005: } else {
3006: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
3007: "while attempting del\n", $userinput);
3008: }
3009: return 1;
3010: }
3011: ®ister_handler("del", \&delete_profile_entry, 0, 1, 0);
1.263 albertel 3012:
1.231 foxr 3013: #
3014: # List the set of keys that are defined in a profile database file.
3015: # A successful reply from this will contain an & separated list of
3016: # the keys.
3017: # Parameters:
3018: # $cmd - Command request (keys).
3019: # $tail - Remainder of the request, a colon separated
3020: # list containing domain/user that identifies the
3021: # user being queried, and the database namespace
3022: # (database filename essentially).
3023: # $client - File open on the client.
3024: # Returns:
3025: # 1 - Continue processing.
3026: # 0 - Exit the server.
3027: #
3028: sub get_profile_keys {
3029: my ($cmd, $tail, $client) = @_;
3030:
3031: my $userinput = "$cmd:$tail";
3032:
3033: my ($udom,$uname,$namespace)=split(/:/,$tail);
3034: my $qresult='';
3035: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3036: &GDBM_READER());
3037: if ($hashref) {
3038: foreach my $key (keys %$hashref) {
3039: $qresult.="$key&";
3040: }
1.315 albertel 3041: if (&untie_user_hash($hashref)) {
1.231 foxr 3042: $qresult=~s/\&$//;
1.387 albertel 3043: &Reply($client, \$qresult, $userinput);
1.231 foxr 3044: } else {
3045: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
3046: "while attempting keys\n", $userinput);
3047: }
3048: } else {
3049: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
3050: "while attempting keys\n", $userinput);
3051: }
3052:
3053: return 1;
3054: }
3055: ®ister_handler("keys", \&get_profile_keys, 0, 1, 0);
3056:
3057: #
3058: # Dump the contents of a user profile database.
3059: # Note that this constitutes a very large covert channel too since
3060: # the dump will return sensitive information that is not encrypted.
3061: # The naive security assumption is that the session negotiation ensures
3062: # our client is trusted and I don't believe that's assured at present.
3063: # Sure want badly to go to ssl or tls. Of course if my peer isn't really
3064: # a LonCAPA node they could have negotiated an encryption key too so >sigh<.
3065: #
3066: # Parameters:
3067: # $cmd - The command request keyword (currentdump).
3068: # $tail - Remainder of the request, consisting of a colon
3069: # separated list that has the domain/username and
3070: # the namespace to dump (database file).
3071: # $client - file open on the remote client.
3072: # Returns:
3073: # 1 - Continue processing.
3074: # 0 - Exit the server.
3075: #
3076: sub dump_profile_database {
3077: my ($cmd, $tail, $client) = @_;
3078:
3079: my $userinput = "$cmd:$tail";
3080:
3081: my ($udom,$uname,$namespace) = split(/:/,$tail);
3082: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3083: &GDBM_READER());
3084: if ($hashref) {
3085: # Structure of %data:
3086: # $data{$symb}->{$parameter}=$value;
3087: # $data{$symb}->{'v.'.$parameter}=$version;
3088: # since $parameter will be unescaped, we do not
3089: # have to worry about silly parameter names...
3090:
3091: my $qresult='';
3092: my %data = (); # A hash of anonymous hashes..
3093: while (my ($key,$value) = each(%$hashref)) {
3094: my ($v,$symb,$param) = split(/:/,$key);
3095: next if ($v eq 'version' || $symb eq 'keys');
3096: next if (exists($data{$symb}) &&
3097: exists($data{$symb}->{$param}) &&
3098: $data{$symb}->{'v.'.$param} > $v);
3099: $data{$symb}->{$param}=$value;
3100: $data{$symb}->{'v.'.$param}=$v;
3101: }
1.311 albertel 3102: if (&untie_user_hash($hashref)) {
1.231 foxr 3103: while (my ($symb,$param_hash) = each(%data)) {
3104: while(my ($param,$value) = each (%$param_hash)){
3105: next if ($param =~ /^v\./); # Ignore versions...
3106: #
3107: # Just dump the symb=value pairs separated by &
3108: #
3109: $qresult.=$symb.':'.$param.'='.$value.'&';
3110: }
3111: }
3112: chop($qresult);
1.387 albertel 3113: &Reply($client , \$qresult, $userinput);
1.231 foxr 3114: } else {
3115: &Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ".
3116: "while attempting currentdump\n", $userinput);
3117: }
3118: } else {
3119: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
3120: "while attempting currentdump\n", $userinput);
3121: }
3122:
3123: return 1;
3124: }
3125: ®ister_handler("currentdump", \&dump_profile_database, 0, 1, 0);
3126:
3127: #
3128: # Dump a profile database with an optional regular expression
3129: # to match against the keys. In this dump, no effort is made
3130: # to separate symb from version information. Presumably the
3131: # databases that are dumped by this command are of a different
3132: # structure. Need to look at this and improve the documentation of
3133: # both this and the currentdump handler.
3134: # Parameters:
3135: # $cmd - The command keyword.
3136: # $tail - All of the characters after the $cmd:
3137: # These are expected to be a colon
3138: # separated list containing:
3139: # domain/user - identifying the user.
3140: # namespace - identifying the database.
3141: # regexp - optional regular expression
3142: # that is matched against
3143: # database keywords to do
3144: # selective dumps.
3145: # $client - Channel open on the client.
3146: # Returns:
3147: # 1 - Continue processing.
3148: # Side effects:
3149: # response is written to $client.
3150: #
3151: sub dump_with_regexp {
3152: my ($cmd, $tail, $client) = @_;
3153:
3154:
3155: my $userinput = "$cmd:$tail";
3156:
1.450 raeburn 3157: my ($udom,$uname,$namespace,$regexp,$range,$extra)=split(/:/,$tail);
1.231 foxr 3158: if (defined($regexp)) {
3159: $regexp=&unescape($regexp);
3160: } else {
3161: $regexp='.';
3162: }
1.306 albertel 3163: my ($start,$end);
3164: if (defined($range)) {
3165: if ($range =~/^(\d+)\-(\d+)$/) {
3166: ($start,$end) = ($1,$2);
3167: } elsif ($range =~/^(\d+)$/) {
3168: ($start,$end) = (0,$1);
3169: } else {
3170: undef($range);
3171: }
3172: }
1.231 foxr 3173: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3174: &GDBM_READER());
1.456 raeburn 3175: my $skipcheck;
1.231 foxr 3176: if ($hashref) {
3177: my $qresult='';
1.306 albertel 3178: my $count=0;
1.450 raeburn 3179: if ($extra ne '') {
3180: $extra = &Apache::lonnet::thaw_unescape($extra);
1.456 raeburn 3181: $skipcheck = $extra->{'skipcheck'};
1.450 raeburn 3182: }
3183: my @ids = &Apache::lonnet::current_machine_ids();
1.453 raeburn 3184: my (%homecourses,$major,$minor,$now);
1.456 raeburn 3185: if (($namespace eq 'roles') && (!$skipcheck)) {
1.453 raeburn 3186: my $loncaparev = $clientversion;
3187: if ($loncaparev eq '') {
3188: $loncaparev = $Apache::lonnet::loncaparevs{$clientname};
3189: }
3190: if ($loncaparev =~ /^\'?(\d+)\.(\d+)\.[\w.\-]+\'?/) {
3191: $major = $1;
3192: $minor = $2;
3193: }
3194: $now = time;
3195: }
1.231 foxr 3196: while (my ($key,$value) = each(%$hashref)) {
1.432 raeburn 3197: if ($namespace eq 'roles') {
1.453 raeburn 3198: if ($key =~ m{^/($LONCAPA::match_domain)/($LONCAPA::match_courseid)(/?[^_]*)_(cc|co|in|ta|ep|ad|st|cr)$}) {
1.446 raeburn 3199: my $cdom = $1;
3200: my $cnum = $2;
1.456 raeburn 3201: unless ($skipcheck) {
1.457 raeburn 3202: my ($role,$end,$start) = split(/\_/,$value);
3203: if (!$end || $end > $now) {
3204: next unless (&releasereqd_check($cnum,$cdom,$key,$value,$major,
3205: $minor,\%homecourses,\@ids));
1.458 raeburn 3206: }
1.432 raeburn 3207: }
3208: }
3209: }
1.231 foxr 3210: if ($regexp eq '.') {
1.306 albertel 3211: $count++;
3212: if (defined($range) && $count >= $end) { last; }
3213: if (defined($range) && $count < $start) { next; }
1.231 foxr 3214: $qresult.=$key.'='.$value.'&';
3215: } else {
3216: my $unescapeKey = &unescape($key);
3217: if (eval('$unescapeKey=~/$regexp/')) {
1.306 albertel 3218: $count++;
3219: if (defined($range) && $count >= $end) { last; }
3220: if (defined($range) && $count < $start) { next; }
1.231 foxr 3221: $qresult.="$key=$value&";
3222: }
3223: }
3224: }
1.311 albertel 3225: if (&untie_user_hash($hashref)) {
1.456 raeburn 3226: if (($namespace eq 'roles') && (!$skipcheck)) {
1.453 raeburn 3227: if (keys(%homecourses) > 0) {
3228: $qresult .= &check_homecourses(\%homecourses,$udom,$regexp,$count,
3229: $range,$start,$end,$major,$minor);
3230: }
3231: }
1.231 foxr 3232: chop($qresult);
1.387 albertel 3233: &Reply($client, \$qresult, $userinput);
1.231 foxr 3234: } else {
3235: &Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ".
3236: "while attempting dump\n", $userinput);
3237: }
3238: } else {
3239: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
3240: "while attempting dump\n", $userinput);
3241: }
3242:
3243: return 1;
3244: }
3245: ®ister_handler("dump", \&dump_with_regexp, 0, 1, 0);
3246:
3247: # Store a set of key=value pairs associated with a versioned name.
3248: #
3249: # Parameters:
3250: # $cmd - Request command keyword.
3251: # $tail - Tail of the request. This is a colon
3252: # separated list containing:
3253: # domain/user - User and authentication domain.
3254: # namespace - Name of the database being modified
3255: # rid - Resource keyword to modify.
3256: # what - new value associated with rid.
3257: #
3258: # $client - Socket open on the client.
3259: #
3260: #
3261: # Returns:
3262: # 1 (keep on processing).
3263: # Side-Effects:
3264: # Writes to the client
3265: sub store_handler {
3266: my ($cmd, $tail, $client) = @_;
3267:
3268: my $userinput = "$cmd:$tail";
3269:
3270: my ($udom,$uname,$namespace,$rid,$what) =split(/:/,$tail);
3271: if ($namespace ne 'roles') {
3272:
3273: chomp($what);
3274: my @pairs=split(/\&/,$what);
3275: my $hashref = &tie_user_hash($udom, $uname, $namespace,
1.268 albertel 3276: &GDBM_WRCREAT(), "S",
1.231 foxr 3277: "$rid:$what");
3278: if ($hashref) {
3279: my $now = time;
3280: my @previouskeys=split(/&/,$hashref->{"keys:$rid"});
3281: my $key;
3282: $hashref->{"version:$rid"}++;
3283: my $version=$hashref->{"version:$rid"};
3284: my $allkeys='';
3285: foreach my $pair (@pairs) {
3286: my ($key,$value)=split(/=/,$pair);
3287: $allkeys.=$key.':';
3288: $hashref->{"$version:$rid:$key"}=$value;
3289: }
3290: $hashref->{"$version:$rid:timestamp"}=$now;
3291: $allkeys.='timestamp';
3292: $hashref->{"$version:keys:$rid"}=$allkeys;
1.311 albertel 3293: if (&untie_user_hash($hashref)) {
1.231 foxr 3294: &Reply($client, "ok\n", $userinput);
3295: } else {
3296: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
3297: "while attempting store\n", $userinput);
3298: }
3299: } else {
3300: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
3301: "while attempting store\n", $userinput);
3302: }
3303: } else {
3304: &Failure($client, "refused\n", $userinput);
3305: }
3306:
3307: return 1;
3308: }
3309: ®ister_handler("store", \&store_handler, 0, 1, 0);
1.263 albertel 3310:
1.323 albertel 3311: # Modify a set of key=value pairs associated with a versioned name.
3312: #
3313: # Parameters:
3314: # $cmd - Request command keyword.
3315: # $tail - Tail of the request. This is a colon
3316: # separated list containing:
3317: # domain/user - User and authentication domain.
3318: # namespace - Name of the database being modified
3319: # rid - Resource keyword to modify.
3320: # v - Version item to modify
3321: # what - new value associated with rid.
3322: #
3323: # $client - Socket open on the client.
3324: #
3325: #
3326: # Returns:
3327: # 1 (keep on processing).
3328: # Side-Effects:
3329: # Writes to the client
3330: sub putstore_handler {
3331: my ($cmd, $tail, $client) = @_;
3332:
3333: my $userinput = "$cmd:$tail";
3334:
3335: my ($udom,$uname,$namespace,$rid,$v,$what) =split(/:/,$tail);
3336: if ($namespace ne 'roles') {
3337:
3338: chomp($what);
3339: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3340: &GDBM_WRCREAT(), "M",
3341: "$rid:$v:$what");
3342: if ($hashref) {
3343: my $now = time;
3344: my %data = &hash_extract($what);
3345: my @allkeys;
3346: while (my($key,$value) = each(%data)) {
3347: push(@allkeys,$key);
3348: $hashref->{"$v:$rid:$key"} = $value;
3349: }
3350: my $allkeys = join(':',@allkeys);
3351: $hashref->{"$v:keys:$rid"}=$allkeys;
3352:
3353: if (&untie_user_hash($hashref)) {
3354: &Reply($client, "ok\n", $userinput);
3355: } else {
3356: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
3357: "while attempting store\n", $userinput);
3358: }
3359: } else {
3360: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
3361: "while attempting store\n", $userinput);
3362: }
3363: } else {
3364: &Failure($client, "refused\n", $userinput);
3365: }
3366:
3367: return 1;
3368: }
3369: ®ister_handler("putstore", \&putstore_handler, 0, 1, 0);
3370:
3371: sub hash_extract {
3372: my ($str)=@_;
3373: my %hash;
3374: foreach my $pair (split(/\&/,$str)) {
3375: my ($key,$value)=split(/=/,$pair);
3376: $hash{$key}=$value;
3377: }
3378: return (%hash);
3379: }
3380: sub hash_to_str {
3381: my ($hash_ref)=@_;
3382: my $str;
3383: foreach my $key (keys(%$hash_ref)) {
3384: $str.=$key.'='.$hash_ref->{$key}.'&';
3385: }
3386: $str=~s/\&$//;
3387: return $str;
3388: }
3389:
1.231 foxr 3390: #
3391: # Dump out all versions of a resource that has key=value pairs associated
3392: # with it for each version. These resources are built up via the store
3393: # command.
3394: #
3395: # Parameters:
3396: # $cmd - Command keyword.
3397: # $tail - Remainder of the request which consists of:
3398: # domain/user - User and auth. domain.
3399: # namespace - name of resource database.
3400: # rid - Resource id.
3401: # $client - socket open on the client.
3402: #
3403: # Returns:
3404: # 1 indicating the caller should not yet exit.
3405: # Side-effects:
3406: # Writes a reply to the client.
3407: # The reply is a string of the following shape:
3408: # version=current&version:keys=k1:k2...&1:k1=v1&1:k2=v2...
3409: # Where the 1 above represents version 1.
3410: # this continues for all pairs of keys in all versions.
3411: #
3412: #
3413: #
3414: #
3415: sub restore_handler {
3416: my ($cmd, $tail, $client) = @_;
3417:
3418: my $userinput = "$cmd:$tail"; # Only used for logging purposes.
1.351 banghart 3419: my ($udom,$uname,$namespace,$rid) = split(/:/,$tail);
1.352 albertel 3420: $namespace=~s/\//\_/g;
1.350 albertel 3421: $namespace = &LONCAPA::clean_username($namespace);
1.349 albertel 3422:
1.231 foxr 3423: chomp($rid);
3424: my $qresult='';
1.309 albertel 3425: my $hashref = &tie_user_hash($udom, $uname, $namespace, &GDBM_READER());
3426: if ($hashref) {
3427: my $version=$hashref->{"version:$rid"};
1.231 foxr 3428: $qresult.="version=$version&";
3429: my $scope;
3430: for ($scope=1;$scope<=$version;$scope++) {
1.309 albertel 3431: my $vkeys=$hashref->{"$scope:keys:$rid"};
1.231 foxr 3432: my @keys=split(/:/,$vkeys);
3433: my $key;
3434: $qresult.="$scope:keys=$vkeys&";
3435: foreach $key (@keys) {
1.309 albertel 3436: $qresult.="$scope:$key=".$hashref->{"$scope:$rid:$key"}."&";
1.231 foxr 3437: }
3438: }
1.311 albertel 3439: if (&untie_user_hash($hashref)) {
1.231 foxr 3440: $qresult=~s/\&$//;
1.387 albertel 3441: &Reply( $client, \$qresult, $userinput);
1.231 foxr 3442: } else {
3443: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
3444: "while attempting restore\n", $userinput);
3445: }
3446: } else {
3447: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
3448: "while attempting restore\n", $userinput);
3449: }
3450:
3451: return 1;
3452:
3453:
3454: }
3455: ®ister_handler("restore", \&restore_handler, 0,1,0);
1.234 foxr 3456:
3457: #
1.324 raeburn 3458: # Add a chat message to a synchronous discussion board.
1.234 foxr 3459: #
3460: # Parameters:
3461: # $cmd - Request keyword.
3462: # $tail - Tail of the command. A colon separated list
3463: # containing:
3464: # cdom - Domain on which the chat board lives
1.324 raeburn 3465: # cnum - Course containing the chat board.
3466: # newpost - Body of the posting.
3467: # group - Optional group, if chat board is only
3468: # accessible in a group within the course
1.234 foxr 3469: # $client - Socket open on the client.
3470: # Returns:
3471: # 1 - Indicating caller should keep on processing.
3472: #
3473: # Side-effects:
3474: # writes a reply to the client.
3475: #
3476: #
3477: sub send_chat_handler {
3478: my ($cmd, $tail, $client) = @_;
3479:
3480:
3481: my $userinput = "$cmd:$tail";
3482:
1.324 raeburn 3483: my ($cdom,$cnum,$newpost,$group)=split(/\:/,$tail);
3484: &chat_add($cdom,$cnum,$newpost,$group);
1.234 foxr 3485: &Reply($client, "ok\n", $userinput);
3486:
3487: return 1;
3488: }
3489: ®ister_handler("chatsend", \&send_chat_handler, 0, 1, 0);
1.263 albertel 3490:
1.234 foxr 3491: #
1.324 raeburn 3492: # Retrieve the set of chat messages from a discussion board.
1.234 foxr 3493: #
3494: # Parameters:
3495: # $cmd - Command keyword that initiated the request.
3496: # $tail - Remainder of the request after the command
3497: # keyword. In this case a colon separated list of
3498: # chat domain - Which discussion board.
3499: # chat id - Discussion thread(?)
3500: # domain/user - Authentication domain and username
3501: # of the requesting person.
1.324 raeburn 3502: # group - Optional course group containing
3503: # the board.
1.234 foxr 3504: # $client - Socket open on the client program.
3505: # Returns:
3506: # 1 - continue processing
3507: # Side effects:
3508: # Response is written to the client.
3509: #
3510: sub retrieve_chat_handler {
3511: my ($cmd, $tail, $client) = @_;
3512:
3513:
3514: my $userinput = "$cmd:$tail";
3515:
1.324 raeburn 3516: my ($cdom,$cnum,$udom,$uname,$group)=split(/\:/,$tail);
1.234 foxr 3517: my $reply='';
1.324 raeburn 3518: foreach (&get_chat($cdom,$cnum,$udom,$uname,$group)) {
1.234 foxr 3519: $reply.=&escape($_).':';
3520: }
3521: $reply=~s/\:$//;
1.387 albertel 3522: &Reply($client, \$reply, $userinput);
1.234 foxr 3523:
3524:
3525: return 1;
3526: }
3527: ®ister_handler("chatretr", \&retrieve_chat_handler, 0, 1, 0);
3528:
3529: #
3530: # Initiate a query of an sql database. SQL query repsonses get put in
3531: # a file for later retrieval. This prevents sql query results from
3532: # bottlenecking the system. Note that with loncnew, perhaps this is
3533: # less of an issue since multiple outstanding requests can be concurrently
3534: # serviced.
3535: #
3536: # Parameters:
3537: # $cmd - COmmand keyword that initiated the request.
3538: # $tail - Remainder of the command after the keyword.
3539: # For this function, this consists of a query and
3540: # 3 arguments that are self-documentingly labelled
3541: # in the original arg1, arg2, arg3.
3542: # $client - Socket open on the client.
3543: # Return:
3544: # 1 - Indicating processing should continue.
3545: # Side-effects:
3546: # a reply is written to $client.
3547: #
3548: sub send_query_handler {
3549: my ($cmd, $tail, $client) = @_;
3550:
3551:
3552: my $userinput = "$cmd:$tail";
3553:
3554: my ($query,$arg1,$arg2,$arg3)=split(/\:/,$tail);
3555: $query=~s/\n*$//g;
3556: &Reply($client, "". &sql_reply("$clientname\&$query".
3557: "\&$arg1"."\&$arg2"."\&$arg3")."\n",
3558: $userinput);
3559:
3560: return 1;
3561: }
3562: ®ister_handler("querysend", \&send_query_handler, 0, 1, 0);
3563:
3564: #
3565: # Add a reply to an sql query. SQL queries are done asyncrhonously.
3566: # The query is submitted via a "querysend" transaction.
3567: # There it is passed on to the lonsql daemon, queued and issued to
3568: # mysql.
3569: # This transaction is invoked when the sql transaction is complete
3570: # it stores the query results in flie and indicates query completion.
3571: # presumably local software then fetches this response... I'm guessing
3572: # the sequence is: lonc does a querysend, we ask lonsql to do it.
3573: # lonsql on completion of the query interacts with the lond of our
3574: # client to do a query reply storing two files:
3575: # - id - The results of the query.
3576: # - id.end - Indicating the transaction completed.
3577: # NOTE: id is a unique id assigned to the query and querysend time.
3578: # Parameters:
3579: # $cmd - Command keyword that initiated this request.
3580: # $tail - Remainder of the tail. In this case that's a colon
3581: # separated list containing the query Id and the
3582: # results of the query.
3583: # $client - Socket open on the client.
3584: # Return:
3585: # 1 - Indicating that we should continue processing.
3586: # Side effects:
3587: # ok written to the client.
3588: #
3589: sub reply_query_handler {
3590: my ($cmd, $tail, $client) = @_;
3591:
3592:
3593: my $userinput = "$cmd:$tail";
3594:
1.339 albertel 3595: my ($id,$reply)=split(/:/,$tail);
1.234 foxr 3596: my $store;
3597: my $execdir=$perlvar{'lonDaemons'};
3598: if ($store=IO::File->new(">$execdir/tmp/$id")) {
3599: $reply=~s/\&/\n/g;
3600: print $store $reply;
3601: close $store;
3602: my $store2=IO::File->new(">$execdir/tmp/$id.end");
3603: print $store2 "done\n";
3604: close $store2;
3605: &Reply($client, "ok\n", $userinput);
3606: } else {
3607: &Failure($client, "error: ".($!+0)
3608: ." IO::File->new Failed ".
3609: "while attempting queryreply\n", $userinput);
3610: }
3611:
3612:
3613: return 1;
3614: }
3615: ®ister_handler("queryreply", \&reply_query_handler, 0, 1, 0);
3616:
3617: #
3618: # Process the courseidput request. Not quite sure what this means
3619: # at the system level sense. It appears a gdbm file in the
3620: # /home/httpd/lonUsers/$domain/nohist_courseids is tied and
3621: # a set of entries made in that database.
3622: #
3623: # Parameters:
3624: # $cmd - The command keyword that initiated this request.
3625: # $tail - Tail of the command. In this case consists of a colon
3626: # separated list contaning the domain to apply this to and
3627: # an ampersand separated list of keyword=value pairs.
1.272 raeburn 3628: # Each value is a colon separated list that includes:
3629: # description, institutional code and course owner.
3630: # For backward compatibility with versions included
3631: # in LON-CAPA 1.1.X (and earlier) and 1.2.X, institutional
3632: # code and/or course owner are preserved from the existing
3633: # record when writing a new record in response to 1.1 or
3634: # 1.2 implementations of lonnet::flushcourselogs().
3635: #
1.234 foxr 3636: # $client - Socket open on the client.
3637: # Returns:
3638: # 1 - indicating that processing should continue
3639: #
3640: # Side effects:
3641: # reply is written to the client.
3642: #
3643: sub put_course_id_handler {
3644: my ($cmd, $tail, $client) = @_;
3645:
3646:
3647: my $userinput = "$cmd:$tail";
3648:
1.266 raeburn 3649: my ($udom, $what) = split(/:/, $tail,2);
1.234 foxr 3650: chomp($what);
3651: my $now=time;
3652: my @pairs=split(/\&/,$what);
3653:
3654: my $hashref = &tie_domain_hash($udom, "nohist_courseids", &GDBM_WRCREAT());
3655: if ($hashref) {
3656: foreach my $pair (@pairs) {
1.271 raeburn 3657: my ($key,$courseinfo) = split(/=/,$pair,2);
3658: $courseinfo =~ s/=/:/g;
1.384 raeburn 3659: if (defined($hashref->{$key})) {
3660: my $value = &Apache::lonnet::thaw_unescape($hashref->{$key});
3661: if (ref($value) eq 'HASH') {
3662: my @items = ('description','inst_code','owner','type');
3663: my @new_items = split(/:/,$courseinfo,-1);
3664: my %storehash;
3665: for (my $i=0; $i<@new_items; $i++) {
1.391 raeburn 3666: $storehash{$items[$i]} = &unescape($new_items[$i]);
1.384 raeburn 3667: }
3668: $hashref->{$key} =
3669: &Apache::lonnet::freeze_escape(\%storehash);
3670: my $unesc_key = &unescape($key);
3671: $hashref->{&escape('lasttime:'.$unesc_key)} = $now;
3672: next;
1.383 raeburn 3673: }
1.384 raeburn 3674: }
3675: my @current_items = split(/:/,$hashref->{$key},-1);
3676: shift(@current_items); # remove description
3677: pop(@current_items); # remove last access
3678: my $numcurrent = scalar(@current_items);
3679: if ($numcurrent > 3) {
3680: $numcurrent = 3;
3681: }
3682: my @new_items = split(/:/,$courseinfo,-1);
3683: my $numnew = scalar(@new_items);
3684: if ($numcurrent > 0) {
3685: if ($numnew <= $numcurrent) { # flushcourselogs() from pre 2.2
3686: for (my $j=$numcurrent-$numnew; $j>=0; $j--) {
3687: $courseinfo .= ':'.$current_items[$numcurrent-$j-1];
1.333 raeburn 3688: }
1.272 raeburn 3689: }
3690: }
1.384 raeburn 3691: $hashref->{$key}=$courseinfo.':'.$now;
1.234 foxr 3692: }
1.311 albertel 3693: if (&untie_domain_hash($hashref)) {
1.253 foxr 3694: &Reply( $client, "ok\n", $userinput);
1.234 foxr 3695: } else {
1.253 foxr 3696: &Failure($client, "error: ".($!+0)
1.234 foxr 3697: ." untie(GDBM) Failed ".
3698: "while attempting courseidput\n", $userinput);
3699: }
3700: } else {
1.253 foxr 3701: &Failure($client, "error: ".($!+0)
1.234 foxr 3702: ." tie(GDBM) Failed ".
3703: "while attempting courseidput\n", $userinput);
3704: }
3705:
3706: return 1;
3707: }
3708: ®ister_handler("courseidput", \&put_course_id_handler, 0, 1, 0);
3709:
1.383 raeburn 3710: sub put_course_id_hash_handler {
3711: my ($cmd, $tail, $client) = @_;
3712: my $userinput = "$cmd:$tail";
1.384 raeburn 3713: my ($udom,$mode,$what) = split(/:/, $tail,3);
1.383 raeburn 3714: chomp($what);
3715: my $now=time;
3716: my @pairs=split(/\&/,$what);
1.384 raeburn 3717: my $hashref = &tie_domain_hash($udom, "nohist_courseids", &GDBM_WRCREAT());
1.383 raeburn 3718: if ($hashref) {
3719: foreach my $pair (@pairs) {
3720: my ($key,$value)=split(/=/,$pair);
1.384 raeburn 3721: my $unesc_key = &unescape($key);
3722: if ($mode ne 'timeonly') {
3723: if (!defined($hashref->{&escape('lasttime:'.$unesc_key)})) {
3724: my $curritems = &Apache::lonnet::thaw_unescape($key);
3725: if (ref($curritems) ne 'HASH') {
3726: my @current_items = split(/:/,$hashref->{$key},-1);
3727: my $lasttime = pop(@current_items);
3728: $hashref->{&escape('lasttime:'.$unesc_key)} = $lasttime;
3729: } else {
3730: $hashref->{&escape('lasttime:'.$unesc_key)} = '';
3731: }
3732: }
3733: $hashref->{$key} = $value;
3734: }
3735: if ($mode ne 'notime') {
3736: $hashref->{&escape('lasttime:'.$unesc_key)} = $now;
3737: }
1.383 raeburn 3738: }
3739: if (&untie_domain_hash($hashref)) {
3740: &Reply($client, "ok\n", $userinput);
3741: } else {
3742: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
3743: "while attempting courseidputhash\n", $userinput);
3744: }
3745: } else {
3746: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
3747: "while attempting courseidputhash\n", $userinput);
3748: }
3749: return 1;
3750: }
3751: ®ister_handler("courseidputhash", \&put_course_id_hash_handler, 0, 1, 0);
3752:
1.234 foxr 3753: # Retrieves the value of a course id resource keyword pattern
3754: # defined since a starting date. Both the starting date and the
3755: # keyword pattern are optional. If the starting date is not supplied it
3756: # is treated as the beginning of time. If the pattern is not found,
3757: # it is treatred as "." matching everything.
3758: #
3759: # Parameters:
3760: # $cmd - Command keyword that resulted in us being dispatched.
3761: # $tail - The remainder of the command that, in this case, consists
3762: # of a colon separated list of:
3763: # domain - The domain in which the course database is
3764: # defined.
3765: # since - Optional parameter describing the minimum
3766: # time of definition(?) of the resources that
3767: # will match the dump.
3768: # description - regular expression that is used to filter
3769: # the dump. Only keywords matching this regexp
3770: # will be used.
1.272 raeburn 3771: # institutional code - optional supplied code to filter
3772: # the dump. Only courses with an institutional code
3773: # that match the supplied code will be returned.
1.336 raeburn 3774: # owner - optional supplied username and domain of owner to
3775: # filter the dump. Only courses for which the course
3776: # owner matches the supplied username and/or domain
3777: # will be returned. Pre-2.2.0 legacy entries from
3778: # nohist_courseiddump will only contain usernames.
1.384 raeburn 3779: # type - optional parameter for selection
1.418 raeburn 3780: # regexp_ok - if 1 or -1 allow the supplied institutional code
3781: # filter to behave as a regular expression:
3782: # 1 will not exclude the course if the instcode matches the RE
3783: # -1 will exclude the course if the instcode matches the RE
1.384 raeburn 3784: # rtn_as_hash - whether to return the information available for
3785: # each matched item as a frozen hash of all
3786: # key, value pairs in the item's hash, or as a
3787: # colon-separated list of (in order) description,
3788: # institutional code, and course owner.
1.404 raeburn 3789: # selfenrollonly - filter by courses allowing self-enrollment
3790: # now or in the future (selfenrollonly = 1).
3791: # catfilter - filter by course category, assigned to a course
3792: # using manually defined categories (i.e., not
1.407 raeburn 3793: # self-cataloging based on on institutional code).
1.404 raeburn 3794: # showhidden - include course in results even if course
1.407 raeburn 3795: # was set to be excluded from course catalog (DC only).
1.404 raeburn 3796: # caller - if set to 'coursecatalog', courses set to be hidden
3797: # from course catalog will be excluded from results (unless
3798: # overridden by "showhidden".
1.427 raeburn 3799: # cloner - escaped username:domain of course cloner (if picking course to
1.419 raeburn 3800: # clone).
3801: # cc_clone_list - escaped comma separated list of courses for which
3802: # course cloner has active CC role (and so can clone
3803: # automatically).
1.427 raeburn 3804: # cloneonly - filter by courses for which cloner has rights to clone.
3805: # createdbefore - include courses for which creation date preceeded this date.
3806: # createdafter - include courses for which creation date followed this date.
3807: # creationcontext - include courses created in specified context
1.404 raeburn 3808: #
1.445 raeburn 3809: # domcloner - flag to indicate if user can create CCs in course's domain.
3810: # If so, ability to clone course is automatic.
3811: #
1.234 foxr 3812: # $client - The socket open on the client.
3813: # Returns:
3814: # 1 - Continue processing.
3815: # Side Effects:
3816: # a reply is written to $client.
3817: sub dump_course_id_handler {
3818: my ($cmd, $tail, $client) = @_;
3819: my $userinput = "$cmd:$tail";
3820:
1.333 raeburn 3821: my ($udom,$since,$description,$instcodefilter,$ownerfilter,$coursefilter,
1.404 raeburn 3822: $typefilter,$regexp_ok,$rtn_as_hash,$selfenrollonly,$catfilter,$showhidden,
1.427 raeburn 3823: $caller,$cloner,$cc_clone_list,$cloneonly,$createdbefore,$createdafter,
1.445 raeburn 3824: $creationcontext,$domcloner) =split(/:/,$tail);
1.397 raeburn 3825: my $now = time;
1.419 raeburn 3826: my ($cloneruname,$clonerudom,%cc_clone);
1.234 foxr 3827: if (defined($description)) {
3828: $description=&unescape($description);
3829: } else {
3830: $description='.';
3831: }
1.266 raeburn 3832: if (defined($instcodefilter)) {
3833: $instcodefilter=&unescape($instcodefilter);
3834: } else {
3835: $instcodefilter='.';
3836: }
1.336 raeburn 3837: my ($ownerunamefilter,$ownerdomfilter);
1.266 raeburn 3838: if (defined($ownerfilter)) {
3839: $ownerfilter=&unescape($ownerfilter);
1.336 raeburn 3840: if ($ownerfilter ne '.' && defined($ownerfilter)) {
3841: if ($ownerfilter =~ /^([^:]*):([^:]*)$/) {
3842: $ownerunamefilter = $1;
3843: $ownerdomfilter = $2;
3844: } else {
3845: $ownerunamefilter = $ownerfilter;
3846: $ownerdomfilter = '';
3847: }
3848: }
1.266 raeburn 3849: } else {
3850: $ownerfilter='.';
3851: }
1.336 raeburn 3852:
1.282 raeburn 3853: if (defined($coursefilter)) {
3854: $coursefilter=&unescape($coursefilter);
3855: } else {
3856: $coursefilter='.';
3857: }
1.333 raeburn 3858: if (defined($typefilter)) {
3859: $typefilter=&unescape($typefilter);
3860: } else {
3861: $typefilter='.';
3862: }
1.344 raeburn 3863: if (defined($regexp_ok)) {
3864: $regexp_ok=&unescape($regexp_ok);
3865: }
1.401 raeburn 3866: if (defined($catfilter)) {
3867: $catfilter=&unescape($catfilter);
3868: }
1.419 raeburn 3869: if (defined($cloner)) {
3870: $cloner = &unescape($cloner);
3871: ($cloneruname,$clonerudom) = ($cloner =~ /^($LONCAPA::match_username):($LONCAPA::match_domain)$/);
3872: }
3873: if (defined($cc_clone_list)) {
3874: $cc_clone_list = &unescape($cc_clone_list);
3875: my @cc_cloners = split('&',$cc_clone_list);
3876: foreach my $cid (@cc_cloners) {
3877: my ($clonedom,$clonenum) = split(':',$cid);
3878: next if ($clonedom ne $udom);
3879: $cc_clone{$clonedom.'_'.$clonenum} = 1;
3880: }
3881: }
1.431 raeburn 3882: if ($createdbefore ne '') {
1.427 raeburn 3883: $createdbefore = &unescape($createdbefore);
3884: } else {
3885: $createdbefore = 0;
3886: }
1.431 raeburn 3887: if ($createdafter ne '') {
1.427 raeburn 3888: $createdafter = &unescape($createdafter);
3889: } else {
3890: $createdafter = 0;
3891: }
1.431 raeburn 3892: if ($creationcontext ne '') {
1.427 raeburn 3893: $creationcontext = &unescape($creationcontext);
3894: } else {
3895: $creationcontext = '.';
3896: }
1.384 raeburn 3897: my $unpack = 1;
3898: if ($description eq '.' && $instcodefilter eq '.' && $coursefilter eq '.' &&
3899: $typefilter eq '.') {
3900: $unpack = 0;
3901: }
3902: if (!defined($since)) { $since=0; }
1.234 foxr 3903: my $qresult='';
3904: my $hashref = &tie_domain_hash($udom, "nohist_courseids", &GDBM_WRCREAT());
3905: if ($hashref) {
1.384 raeburn 3906: while (my ($key,$value) = each(%$hashref)) {
1.397 raeburn 3907: my ($unesc_key,$lasttime_key,$lasttime,$is_hash,%val,
1.427 raeburn 3908: %unesc_val,$selfenroll_end,$selfenroll_types,$created,
3909: $context);
1.384 raeburn 3910: $unesc_key = &unescape($key);
3911: if ($unesc_key =~ /^lasttime:/) {
3912: next;
3913: } else {
3914: $lasttime_key = &escape('lasttime:'.$unesc_key);
3915: }
3916: if ($hashref->{$lasttime_key} ne '') {
3917: $lasttime = $hashref->{$lasttime_key};
3918: next if ($lasttime<$since);
3919: }
1.419 raeburn 3920: my ($canclone,$valchange);
1.384 raeburn 3921: my $items = &Apache::lonnet::thaw_unescape($value);
3922: if (ref($items) eq 'HASH') {
1.429 raeburn 3923: if ($hashref->{$lasttime_key} eq '') {
1.430 raeburn 3924: next if ($since > 1);
1.429 raeburn 3925: }
1.384 raeburn 3926: $is_hash = 1;
1.445 raeburn 3927: if ($domcloner) {
3928: $canclone = 1;
3929: } elsif (defined($clonerudom)) {
1.419 raeburn 3930: if ($items->{'cloners'}) {
3931: my @cloneable = split(',',$items->{'cloners'});
3932: if (@cloneable) {
3933: if (grep(/^\*$/,@cloneable)) {
3934: $canclone = 1;
3935: } elsif (grep(/^\*:\Q$clonerudom\E$/,@cloneable)) {
3936: $canclone = 1;
3937: } elsif (grep(/^\Q$cloneruname\E:\Q$clonerudom\E$/,@cloneable)) {
3938: $canclone = 1;
3939: }
3940: }
3941: unless ($canclone) {
3942: if ($cloneruname ne '' && $clonerudom ne '') {
3943: if ($cc_clone{$unesc_key}) {
3944: $canclone = 1;
3945: $items->{'cloners'} .= ','.$cloneruname.':'.
3946: $clonerudom;
3947: $valchange = 1;
3948: }
3949: }
3950: }
3951: } elsif (defined($cloneruname)) {
3952: if ($cc_clone{$unesc_key}) {
3953: $canclone = 1;
3954: $items->{'cloners'} = $cloneruname.':'.$clonerudom;
3955: $valchange = 1;
3956: }
1.437 raeburn 3957: unless ($canclone) {
3958: if ($items->{'owner'} =~ /:/) {
3959: if ($items->{'owner'} eq $cloner) {
3960: $canclone = 1;
3961: }
1.444 raeburn 3962: } elsif ($cloner eq $items->{'owner'}.':'.$udom) {
1.437 raeburn 3963: $canclone = 1;
3964: }
3965: if ($canclone) {
3966: $items->{'cloners'} = $cloneruname.':'.$clonerudom;
3967: $valchange = 1;
3968: }
3969: }
1.419 raeburn 3970: }
3971: }
1.384 raeburn 3972: if ($unpack || !$rtn_as_hash) {
3973: $unesc_val{'descr'} = $items->{'description'};
3974: $unesc_val{'inst_code'} = $items->{'inst_code'};
3975: $unesc_val{'owner'} = $items->{'owner'};
3976: $unesc_val{'type'} = $items->{'type'};
1.419 raeburn 3977: $unesc_val{'cloners'} = $items->{'cloners'};
1.427 raeburn 3978: $unesc_val{'created'} = $items->{'created'};
3979: $unesc_val{'context'} = $items->{'context'};
1.404 raeburn 3980: }
3981: $selfenroll_types = $items->{'selfenroll_types'};
3982: $selfenroll_end = $items->{'selfenroll_end_date'};
1.427 raeburn 3983: $created = $items->{'created'};
3984: $context = $items->{'context'};
1.404 raeburn 3985: if ($selfenrollonly) {
3986: next if (!$selfenroll_types);
3987: if (($selfenroll_end > 0) && ($selfenroll_end <= $now)) {
3988: next;
1.397 raeburn 3989: }
1.404 raeburn 3990: }
1.427 raeburn 3991: if ($creationcontext ne '.') {
3992: next if (($context ne '') && ($context ne $creationcontext));
3993: }
3994: if ($createdbefore > 0) {
3995: next if (($created eq '') || ($created > $createdbefore));
3996: }
3997: if ($createdafter > 0) {
3998: next if (($created eq '') || ($created <= $createdafter));
3999: }
1.404 raeburn 4000: if ($catfilter ne '') {
1.406 raeburn 4001: next if ($items->{'categories'} eq '');
4002: my @categories = split('&',$items->{'categories'});
1.407 raeburn 4003: next if (@categories == 0);
4004: my @subcats = split('&',$catfilter);
4005: my $matchcat = 0;
4006: foreach my $cat (@categories) {
4007: if (grep(/^\Q$cat\E$/,@subcats)) {
4008: $matchcat = 1;
4009: last;
4010: }
4011: }
4012: next if (!$matchcat);
1.404 raeburn 4013: }
4014: if ($caller eq 'coursecatalog') {
1.405 raeburn 4015: if ($items->{'hidefromcat'} eq 'yes') {
4016: next if !$showhidden;
1.401 raeburn 4017: }
1.384 raeburn 4018: }
1.383 raeburn 4019: } else {
1.401 raeburn 4020: next if ($catfilter ne '');
1.419 raeburn 4021: next if ($selfenrollonly);
1.427 raeburn 4022: next if ($createdbefore || $createdafter);
4023: next if ($creationcontext ne '.');
1.419 raeburn 4024: if ((defined($clonerudom)) && (defined($cloneruname))) {
4025: if ($cc_clone{$unesc_key}) {
4026: $canclone = 1;
4027: $val{'cloners'} = &escape($cloneruname.':'.$clonerudom);
4028: }
4029: }
1.384 raeburn 4030: $is_hash = 0;
1.388 raeburn 4031: my @courseitems = split(/:/,$value);
1.403 raeburn 4032: $lasttime = pop(@courseitems);
1.402 raeburn 4033: if ($hashref->{$lasttime_key} eq '') {
4034: next if ($lasttime<$since);
4035: }
1.384 raeburn 4036: ($val{'descr'},$val{'inst_code'},$val{'owner'},$val{'type'}) = @courseitems;
1.383 raeburn 4037: }
1.419 raeburn 4038: if ($cloneonly) {
4039: next unless ($canclone);
4040: }
1.266 raeburn 4041: my $match = 1;
1.384 raeburn 4042: if ($description ne '.') {
4043: if (!$is_hash) {
4044: $unesc_val{'descr'} = &unescape($val{'descr'});
4045: }
4046: if (eval{$unesc_val{'descr'} !~ /\Q$description\E/i}) {
1.266 raeburn 4047: $match = 0;
1.384 raeburn 4048: }
1.266 raeburn 4049: }
1.384 raeburn 4050: if ($instcodefilter ne '.') {
4051: if (!$is_hash) {
4052: $unesc_val{'inst_code'} = &unescape($val{'inst_code'});
4053: }
1.418 raeburn 4054: if ($regexp_ok == 1) {
1.384 raeburn 4055: if (eval{$unesc_val{'inst_code'} !~ /$instcodefilter/}) {
1.344 raeburn 4056: $match = 0;
4057: }
1.418 raeburn 4058: } elsif ($regexp_ok == -1) {
4059: if (eval{$unesc_val{'inst_code'} =~ /$instcodefilter/}) {
4060: $match = 0;
4061: }
1.344 raeburn 4062: } else {
1.384 raeburn 4063: if (eval{$unesc_val{'inst_code'} !~ /\Q$instcodefilter\E/i}) {
1.344 raeburn 4064: $match = 0;
4065: }
1.266 raeburn 4066: }
1.234 foxr 4067: }
1.384 raeburn 4068: if ($ownerfilter ne '.') {
4069: if (!$is_hash) {
4070: $unesc_val{'owner'} = &unescape($val{'owner'});
4071: }
1.336 raeburn 4072: if (($ownerunamefilter ne '') && ($ownerdomfilter ne '')) {
1.384 raeburn 4073: if ($unesc_val{'owner'} =~ /:/) {
4074: if (eval{$unesc_val{'owner'} !~
4075: /\Q$ownerunamefilter\E:\Q$ownerdomfilter\E$/i}) {
1.336 raeburn 4076: $match = 0;
4077: }
4078: } else {
1.384 raeburn 4079: if (eval{$unesc_val{'owner'} !~ /\Q$ownerunamefilter\E/i}) {
1.336 raeburn 4080: $match = 0;
4081: }
4082: }
4083: } elsif ($ownerunamefilter ne '') {
1.384 raeburn 4084: if ($unesc_val{'owner'} =~ /:/) {
4085: if (eval{$unesc_val{'owner'} !~ /\Q$ownerunamefilter\E:[^:]+$/i}) {
1.336 raeburn 4086: $match = 0;
4087: }
4088: } else {
1.384 raeburn 4089: if (eval{$unesc_val{'owner'} !~ /\Q$ownerunamefilter\E/i}) {
1.336 raeburn 4090: $match = 0;
4091: }
4092: }
4093: } elsif ($ownerdomfilter ne '') {
1.384 raeburn 4094: if ($unesc_val{'owner'} =~ /:/) {
4095: if (eval{$unesc_val{'owner'} !~ /^[^:]+:\Q$ownerdomfilter\E/}) {
1.336 raeburn 4096: $match = 0;
4097: }
4098: } else {
4099: if ($ownerdomfilter ne $udom) {
4100: $match = 0;
4101: }
4102: }
1.266 raeburn 4103: }
4104: }
1.384 raeburn 4105: if ($coursefilter ne '.') {
4106: if (eval{$unesc_key !~ /^$udom(_)\Q$coursefilter\E$/}) {
1.282 raeburn 4107: $match = 0;
4108: }
4109: }
1.384 raeburn 4110: if ($typefilter ne '.') {
4111: if (!$is_hash) {
4112: $unesc_val{'type'} = &unescape($val{'type'});
4113: }
4114: if ($unesc_val{'type'} eq '') {
1.333 raeburn 4115: if ($typefilter ne 'Course') {
4116: $match = 0;
4117: }
1.383 raeburn 4118: } else {
1.384 raeburn 4119: if (eval{$unesc_val{'type'} !~ /^\Q$typefilter\E$/}) {
1.333 raeburn 4120: $match = 0;
4121: }
4122: }
4123: }
1.266 raeburn 4124: if ($match == 1) {
1.384 raeburn 4125: if ($rtn_as_hash) {
4126: if ($is_hash) {
1.419 raeburn 4127: if ($valchange) {
4128: my $newvalue = &Apache::lonnet::freeze_escape($items);
4129: $qresult.=$key.'='.$newvalue.'&';
4130: } else {
4131: $qresult.=$key.'='.$value.'&';
4132: }
1.384 raeburn 4133: } else {
1.388 raeburn 4134: my %rtnhash = ( 'description' => &unescape($val{'descr'}),
4135: 'inst_code' => &unescape($val{'inst_code'}),
4136: 'owner' => &unescape($val{'owner'}),
4137: 'type' => &unescape($val{'type'}),
1.419 raeburn 4138: 'cloners' => &unescape($val{'cloners'}),
1.384 raeburn 4139: );
4140: my $items = &Apache::lonnet::freeze_escape(\%rtnhash);
4141: $qresult.=$key.'='.$items.'&';
4142: }
1.383 raeburn 4143: } else {
1.384 raeburn 4144: if ($is_hash) {
4145: $qresult .= $key.'='.&escape($unesc_val{'descr'}).':'.
4146: &escape($unesc_val{'inst_code'}).':'.
4147: &escape($unesc_val{'owner'}).'&';
4148: } else {
4149: $qresult .= $key.'='.$val{'descr'}.':'.$val{'inst_code'}.
4150: ':'.$val{'owner'}.'&';
4151: }
1.383 raeburn 4152: }
1.266 raeburn 4153: }
1.234 foxr 4154: }
1.311 albertel 4155: if (&untie_domain_hash($hashref)) {
1.234 foxr 4156: chop($qresult);
1.387 albertel 4157: &Reply($client, \$qresult, $userinput);
1.234 foxr 4158: } else {
4159: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4160: "while attempting courseiddump\n", $userinput);
4161: }
4162: } else {
4163: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
4164: "while attempting courseiddump\n", $userinput);
4165: }
4166: return 1;
4167: }
4168: ®ister_handler("courseiddump", \&dump_course_id_handler, 0, 1, 0);
1.238 foxr 4169:
1.438 raeburn 4170: sub course_lastaccess_handler {
4171: my ($cmd, $tail, $client) = @_;
4172: my $userinput = "$cmd:$tail";
4173: my ($cdom,$cnum) = split(':',$tail);
4174: my (%lastaccess,$qresult);
4175: my $hashref = &tie_domain_hash($cdom, "nohist_courseids", &GDBM_WRCREAT());
4176: if ($hashref) {
4177: while (my ($key,$value) = each(%$hashref)) {
4178: my ($unesc_key,$lasttime);
4179: $unesc_key = &unescape($key);
4180: if ($cnum) {
4181: next unless ($unesc_key =~ /\Q$cdom\E_\Q$cnum\E$/);
4182: }
4183: if ($unesc_key =~ /^lasttime:($LONCAPA::match_domain\_$LONCAPA::match_courseid)/) {
4184: $lastaccess{$1} = $value;
4185: } else {
4186: my $items = &Apache::lonnet::thaw_unescape($value);
4187: if (ref($items) eq 'HASH') {
4188: unless ($lastaccess{$unesc_key}) {
4189: $lastaccess{$unesc_key} = '';
4190: }
4191: } else {
4192: my @courseitems = split(':',$value);
4193: $lastaccess{$unesc_key} = pop(@courseitems);
4194: }
4195: }
4196: }
4197: foreach my $cid (sort(keys(%lastaccess))) {
4198: $qresult.=&escape($cid).'='.$lastaccess{$cid}.'&';
4199: }
4200: if (&untie_domain_hash($hashref)) {
4201: if ($qresult) {
4202: chop($qresult);
4203: }
4204: &Reply($client, \$qresult, $userinput);
4205: } else {
4206: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4207: "while attempting lastacourseaccess\n", $userinput);
4208: }
4209: } else {
4210: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
4211: "while attempting lastcourseaccess\n", $userinput);
4212: }
4213: return 1;
4214: }
4215: ®ister_handler("courselastaccess",\&course_lastaccess_handler, 0, 1, 0);
4216:
1.238 foxr 4217: #
1.348 raeburn 4218: # Puts an unencrypted entry in a namespace db file at the domain level
4219: #
4220: # Parameters:
4221: # $cmd - The command that got us here.
4222: # $tail - Tail of the command (remaining parameters).
4223: # $client - File descriptor connected to client.
4224: # Returns
4225: # 0 - Requested to exit, caller should shut down.
4226: # 1 - Continue processing.
4227: # Side effects:
4228: # reply is written to $client.
4229: #
4230: sub put_domain_handler {
4231: my ($cmd,$tail,$client) = @_;
4232:
4233: my $userinput = "$cmd:$tail";
4234:
4235: my ($udom,$namespace,$what) =split(/:/,$tail,3);
4236: chomp($what);
4237: my @pairs=split(/\&/,$what);
4238: my $hashref = &tie_domain_hash($udom, "$namespace", &GDBM_WRCREAT(),
4239: "P", $what);
4240: if ($hashref) {
4241: foreach my $pair (@pairs) {
4242: my ($key,$value)=split(/=/,$pair);
4243: $hashref->{$key}=$value;
4244: }
4245: if (&untie_domain_hash($hashref)) {
4246: &Reply($client, "ok\n", $userinput);
4247: } else {
4248: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4249: "while attempting putdom\n", $userinput);
4250: }
4251: } else {
4252: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
4253: "while attempting putdom\n", $userinput);
4254: }
4255:
4256: return 1;
4257: }
4258: ®ister_handler("putdom", \&put_domain_handler, 0, 1, 0);
4259:
4260: # Unencrypted get from the namespace database file at the domain level.
4261: # This function retrieves a keyed item from a specific named database in the
4262: # domain directory.
4263: #
4264: # Parameters:
4265: # $cmd - Command request keyword (get).
4266: # $tail - Tail of the command. This is a colon separated list
4267: # consisting of the domain and the 'namespace'
4268: # which selects the gdbm file to do the lookup in,
4269: # & separated list of keys to lookup. Note that
4270: # the values are returned as an & separated list too.
4271: # $client - File descriptor open on the client.
4272: # Returns:
4273: # 1 - Continue processing.
4274: # 0 - Exit.
4275: # Side effects:
4276: # reply is written to $client.
4277: #
4278:
4279: sub get_domain_handler {
4280: my ($cmd, $tail, $client) = @_;
4281:
1.461 foxr 4282:
1.348 raeburn 4283: my $userinput = "$client:$tail";
4284:
4285: my ($udom,$namespace,$what)=split(/:/,$tail,3);
4286: chomp($what);
4287: my @queries=split(/\&/,$what);
4288: my $qresult='';
4289: my $hashref = &tie_domain_hash($udom, "$namespace", &GDBM_READER());
4290: if ($hashref) {
4291: for (my $i=0;$i<=$#queries;$i++) {
4292: $qresult.="$hashref->{$queries[$i]}&";
4293: }
4294: if (&untie_domain_hash($hashref)) {
4295: $qresult=~s/\&$//;
1.387 albertel 4296: &Reply($client, \$qresult, $userinput);
1.348 raeburn 4297: } else {
4298: &Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ".
4299: "while attempting getdom\n",$userinput);
4300: }
4301: } else {
4302: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
4303: "while attempting getdom\n",$userinput);
4304: }
4305:
4306: return 1;
4307: }
1.360 raeburn 4308: ®ister_handler("getdom", \&get_domain_handler, 0, 1, 0);
1.348 raeburn 4309:
1.420 raeburn 4310: #
1.238 foxr 4311: # Puts an id to a domains id database.
4312: #
4313: # Parameters:
4314: # $cmd - The command that triggered us.
4315: # $tail - Remainder of the request other than the command. This is a
4316: # colon separated list containing:
4317: # $domain - The domain for which we are writing the id.
4318: # $pairs - The id info to write... this is and & separated list
4319: # of keyword=value.
4320: # $client - Socket open on the client.
4321: # Returns:
4322: # 1 - Continue processing.
4323: # Side effects:
4324: # reply is written to $client.
4325: #
4326: sub put_id_handler {
4327: my ($cmd,$tail,$client) = @_;
4328:
4329:
4330: my $userinput = "$cmd:$tail";
4331:
4332: my ($udom,$what)=split(/:/,$tail);
4333: chomp($what);
4334: my @pairs=split(/\&/,$what);
4335: my $hashref = &tie_domain_hash($udom, "ids", &GDBM_WRCREAT(),
4336: "P", $what);
4337: if ($hashref) {
4338: foreach my $pair (@pairs) {
4339: my ($key,$value)=split(/=/,$pair);
4340: $hashref->{$key}=$value;
4341: }
1.311 albertel 4342: if (&untie_domain_hash($hashref)) {
1.238 foxr 4343: &Reply($client, "ok\n", $userinput);
4344: } else {
4345: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4346: "while attempting idput\n", $userinput);
4347: }
4348: } else {
4349: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
4350: "while attempting idput\n", $userinput);
4351: }
4352:
4353: return 1;
4354: }
1.263 albertel 4355: ®ister_handler("idput", \&put_id_handler, 0, 1, 0);
1.238 foxr 4356:
4357: #
4358: # Retrieves a set of id values from the id database.
4359: # Returns an & separated list of results, one for each requested id to the
4360: # client.
4361: #
4362: # Parameters:
4363: # $cmd - Command keyword that caused us to be dispatched.
4364: # $tail - Tail of the command. Consists of a colon separated:
4365: # domain - the domain whose id table we dump
4366: # ids Consists of an & separated list of
4367: # id keywords whose values will be fetched.
4368: # nonexisting keywords will have an empty value.
4369: # $client - Socket open on the client.
4370: #
4371: # Returns:
4372: # 1 - indicating processing should continue.
4373: # Side effects:
4374: # An & separated list of results is written to $client.
4375: #
4376: sub get_id_handler {
4377: my ($cmd, $tail, $client) = @_;
4378:
4379:
4380: my $userinput = "$client:$tail";
4381:
4382: my ($udom,$what)=split(/:/,$tail);
4383: chomp($what);
4384: my @queries=split(/\&/,$what);
4385: my $qresult='';
4386: my $hashref = &tie_domain_hash($udom, "ids", &GDBM_READER());
4387: if ($hashref) {
4388: for (my $i=0;$i<=$#queries;$i++) {
4389: $qresult.="$hashref->{$queries[$i]}&";
4390: }
1.311 albertel 4391: if (&untie_domain_hash($hashref)) {
1.238 foxr 4392: $qresult=~s/\&$//;
1.387 albertel 4393: &Reply($client, \$qresult, $userinput);
1.238 foxr 4394: } else {
4395: &Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ".
4396: "while attempting idget\n",$userinput);
4397: }
4398: } else {
4399: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
4400: "while attempting idget\n",$userinput);
4401: }
4402:
4403: return 1;
4404: }
1.263 albertel 4405: ®ister_handler("idget", \&get_id_handler, 0, 1, 0);
1.238 foxr 4406:
4407: #
1.299 raeburn 4408: # Puts broadcast e-mail sent by Domain Coordinator in nohist_dcmail database
4409: #
4410: # Parameters
4411: # $cmd - Command keyword that caused us to be dispatched.
4412: # $tail - Tail of the command. Consists of a colon separated:
4413: # domain - the domain whose dcmail we are recording
4414: # email Consists of key=value pair
4415: # where key is unique msgid
4416: # and value is message (in XML)
4417: # $client - Socket open on the client.
4418: #
4419: # Returns:
4420: # 1 - indicating processing should continue.
4421: # Side effects
4422: # reply is written to $client.
4423: #
4424: sub put_dcmail_handler {
4425: my ($cmd,$tail,$client) = @_;
4426: my $userinput = "$cmd:$tail";
1.463 foxr 4427:
4428:
1.299 raeburn 4429: my ($udom,$what)=split(/:/,$tail);
4430: chomp($what);
4431: my $hashref = &tie_domain_hash($udom, "nohist_dcmail", &GDBM_WRCREAT());
4432: if ($hashref) {
4433: my ($key,$value)=split(/=/,$what);
4434: $hashref->{$key}=$value;
4435: }
1.311 albertel 4436: if (&untie_domain_hash($hashref)) {
1.299 raeburn 4437: &Reply($client, "ok\n", $userinput);
4438: } else {
4439: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4440: "while attempting dcmailput\n", $userinput);
4441: }
4442: return 1;
4443: }
4444: ®ister_handler("dcmailput", \&put_dcmail_handler, 0, 1, 0);
4445:
4446: #
4447: # Retrieves broadcast e-mail from nohist_dcmail database
4448: # Returns to client an & separated list of key=value pairs,
4449: # where key is msgid and value is message information.
4450: #
4451: # Parameters
4452: # $cmd - Command keyword that caused us to be dispatched.
4453: # $tail - Tail of the command. Consists of a colon separated:
4454: # domain - the domain whose dcmail table we dump
4455: # startfilter - beginning of time window
4456: # endfilter - end of time window
4457: # sendersfilter - & separated list of username:domain
4458: # for senders to search for.
4459: # $client - Socket open on the client.
4460: #
4461: # Returns:
4462: # 1 - indicating processing should continue.
4463: # Side effects
4464: # reply (& separated list of msgid=messageinfo pairs) is
4465: # written to $client.
4466: #
4467: sub dump_dcmail_handler {
4468: my ($cmd, $tail, $client) = @_;
4469:
4470: my $userinput = "$cmd:$tail";
4471: my ($udom,$startfilter,$endfilter,$sendersfilter) = split(/:/,$tail);
4472: chomp($sendersfilter);
4473: my @senders = ();
4474: if (defined($startfilter)) {
4475: $startfilter=&unescape($startfilter);
4476: } else {
4477: $startfilter='.';
4478: }
4479: if (defined($endfilter)) {
4480: $endfilter=&unescape($endfilter);
4481: } else {
4482: $endfilter='.';
4483: }
4484: if (defined($sendersfilter)) {
4485: $sendersfilter=&unescape($sendersfilter);
1.300 albertel 4486: @senders = map { &unescape($_) } split(/\&/,$sendersfilter);
1.299 raeburn 4487: }
4488:
4489: my $qresult='';
4490: my $hashref = &tie_domain_hash($udom, "nohist_dcmail", &GDBM_WRCREAT());
4491: if ($hashref) {
4492: while (my ($key,$value) = each(%$hashref)) {
4493: my $match = 1;
1.303 albertel 4494: my ($timestamp,$subj,$uname,$udom) =
4495: split(/:/,&unescape(&unescape($key)),5); # yes, twice really
1.299 raeburn 4496: $subj = &unescape($subj);
4497: unless ($startfilter eq '.' || !defined($startfilter)) {
4498: if ($timestamp < $startfilter) {
4499: $match = 0;
4500: }
4501: }
4502: unless ($endfilter eq '.' || !defined($endfilter)) {
4503: if ($timestamp > $endfilter) {
4504: $match = 0;
4505: }
4506: }
4507: unless (@senders < 1) {
4508: unless (grep/^$uname:$udom$/,@senders) {
4509: $match = 0;
4510: }
4511: }
4512: if ($match == 1) {
4513: $qresult.=$key.'='.$value.'&';
4514: }
4515: }
1.311 albertel 4516: if (&untie_domain_hash($hashref)) {
1.299 raeburn 4517: chop($qresult);
1.387 albertel 4518: &Reply($client, \$qresult, $userinput);
1.299 raeburn 4519: } else {
4520: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4521: "while attempting dcmaildump\n", $userinput);
4522: }
4523: } else {
4524: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
4525: "while attempting dcmaildump\n", $userinput);
4526: }
4527: return 1;
4528: }
4529:
4530: ®ister_handler("dcmaildump", \&dump_dcmail_handler, 0, 1, 0);
4531:
4532: #
4533: # Puts domain roles in nohist_domainroles database
4534: #
4535: # Parameters
4536: # $cmd - Command keyword that caused us to be dispatched.
4537: # $tail - Tail of the command. Consists of a colon separated:
4538: # domain - the domain whose roles we are recording
4539: # role - Consists of key=value pair
4540: # where key is unique role
4541: # and value is start/end date information
4542: # $client - Socket open on the client.
4543: #
4544: # Returns:
4545: # 1 - indicating processing should continue.
4546: # Side effects
4547: # reply is written to $client.
4548: #
4549:
4550: sub put_domainroles_handler {
4551: my ($cmd,$tail,$client) = @_;
4552:
4553: my $userinput = "$cmd:$tail";
4554: my ($udom,$what)=split(/:/,$tail);
4555: chomp($what);
4556: my @pairs=split(/\&/,$what);
4557: my $hashref = &tie_domain_hash($udom, "nohist_domainroles", &GDBM_WRCREAT());
4558: if ($hashref) {
4559: foreach my $pair (@pairs) {
4560: my ($key,$value)=split(/=/,$pair);
4561: $hashref->{$key}=$value;
4562: }
1.311 albertel 4563: if (&untie_domain_hash($hashref)) {
1.299 raeburn 4564: &Reply($client, "ok\n", $userinput);
4565: } else {
4566: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4567: "while attempting domroleput\n", $userinput);
4568: }
4569: } else {
4570: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
4571: "while attempting domroleput\n", $userinput);
4572: }
4573:
4574: return 1;
4575: }
4576:
4577: ®ister_handler("domroleput", \&put_domainroles_handler, 0, 1, 0);
4578:
4579: #
4580: # Retrieves domain roles from nohist_domainroles database
4581: # Returns to client an & separated list of key=value pairs,
4582: # where key is role and value is start and end date information.
4583: #
4584: # Parameters
4585: # $cmd - Command keyword that caused us to be dispatched.
4586: # $tail - Tail of the command. Consists of a colon separated:
4587: # domain - the domain whose domain roles table we dump
4588: # $client - Socket open on the client.
4589: #
4590: # Returns:
4591: # 1 - indicating processing should continue.
4592: # Side effects
4593: # reply (& separated list of role=start/end info pairs) is
4594: # written to $client.
4595: #
4596: sub dump_domainroles_handler {
4597: my ($cmd, $tail, $client) = @_;
4598:
4599: my $userinput = "$cmd:$tail";
4600: my ($udom,$startfilter,$endfilter,$rolesfilter) = split(/:/,$tail);
4601: chomp($rolesfilter);
4602: my @roles = ();
4603: if (defined($startfilter)) {
4604: $startfilter=&unescape($startfilter);
4605: } else {
4606: $startfilter='.';
4607: }
4608: if (defined($endfilter)) {
4609: $endfilter=&unescape($endfilter);
4610: } else {
4611: $endfilter='.';
4612: }
4613: if (defined($rolesfilter)) {
4614: $rolesfilter=&unescape($rolesfilter);
1.300 albertel 4615: @roles = split(/\&/,$rolesfilter);
1.299 raeburn 4616: }
1.421 raeburn 4617:
1.299 raeburn 4618: my $hashref = &tie_domain_hash($udom, "nohist_domainroles", &GDBM_WRCREAT());
4619: if ($hashref) {
4620: my $qresult = '';
4621: while (my ($key,$value) = each(%$hashref)) {
4622: my $match = 1;
1.421 raeburn 4623: my ($end,$start) = split(/:/,&unescape($value));
1.299 raeburn 4624: my ($trole,$uname,$udom,$runame,$rudom,$rsec) = split(/:/,&unescape($key));
1.421 raeburn 4625: unless (@roles < 1) {
4626: unless (grep/^\Q$trole\E$/,@roles) {
4627: $match = 0;
4628: next;
4629: }
4630: }
1.299 raeburn 4631: unless ($startfilter eq '.' || !defined($startfilter)) {
1.415 raeburn 4632: if ((defined($start)) && ($start >= $startfilter)) {
1.299 raeburn 4633: $match = 0;
1.421 raeburn 4634: next;
1.299 raeburn 4635: }
4636: }
4637: unless ($endfilter eq '.' || !defined($endfilter)) {
1.421 raeburn 4638: if ((defined($end)) && (($end > 0) && ($end <= $endfilter))) {
1.299 raeburn 4639: $match = 0;
1.421 raeburn 4640: next;
1.299 raeburn 4641: }
4642: }
4643: if ($match == 1) {
4644: $qresult.=$key.'='.$value.'&';
4645: }
4646: }
1.311 albertel 4647: if (&untie_domain_hash($hashref)) {
1.299 raeburn 4648: chop($qresult);
1.387 albertel 4649: &Reply($client, \$qresult, $userinput);
1.299 raeburn 4650: } else {
4651: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4652: "while attempting domrolesdump\n", $userinput);
4653: }
4654: } else {
4655: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
4656: "while attempting domrolesdump\n", $userinput);
4657: }
4658: return 1;
4659: }
4660:
4661: ®ister_handler("domrolesdump", \&dump_domainroles_handler, 0, 1, 0);
4662:
4663:
1.238 foxr 4664: # Process the tmpput command I'm not sure what this does.. Seems to
4665: # create a file in the lonDaemons/tmp directory of the form $id.tmp
4666: # where Id is the client's ip concatenated with a sequence number.
4667: # The file will contain some value that is passed in. Is this e.g.
4668: # a login token?
4669: #
4670: # Parameters:
4671: # $cmd - The command that got us dispatched.
4672: # $tail - The remainder of the request following $cmd:
4673: # In this case this will be the contents of the file.
4674: # $client - Socket connected to the client.
4675: # Returns:
4676: # 1 indicating processing can continue.
4677: # Side effects:
4678: # A file is created in the local filesystem.
4679: # A reply is sent to the client.
4680: sub tmp_put_handler {
4681: my ($cmd, $what, $client) = @_;
4682:
4683: my $userinput = "$cmd:$what"; # Reconstruct for logging.
4684:
1.347 raeburn 4685: my ($record,$context) = split(/:/,$what);
4686: if ($context ne '') {
4687: chomp($context);
4688: $context = &unescape($context);
4689: }
4690: my ($id,$store);
1.238 foxr 4691: $tmpsnum++;
1.454 raeburn 4692: if (($context eq 'resetpw') || ($context eq 'createaccount')) {
1.347 raeburn 4693: $id = &md5_hex(&md5_hex(time.{}.rand().$$));
4694: } else {
4695: $id = $$.'_'.$clientip.'_'.$tmpsnum;
4696: }
1.238 foxr 4697: $id=~s/\W/\_/g;
1.347 raeburn 4698: $record=~s/\n//g;
1.238 foxr 4699: my $execdir=$perlvar{'lonDaemons'};
4700: if ($store=IO::File->new(">$execdir/tmp/$id.tmp")) {
1.347 raeburn 4701: print $store $record;
1.238 foxr 4702: close $store;
1.387 albertel 4703: &Reply($client, \$id, $userinput);
1.238 foxr 4704: } else {
4705: &Failure( $client, "error: ".($!+0)."IO::File->new Failed ".
4706: "while attempting tmpput\n", $userinput);
4707: }
4708: return 1;
4709:
4710: }
4711: ®ister_handler("tmpput", \&tmp_put_handler, 0, 1, 0);
1.263 albertel 4712:
1.238 foxr 4713: # Processes the tmpget command. This command returns the contents
4714: # of a temporary resource file(?) created via tmpput.
4715: #
4716: # Paramters:
4717: # $cmd - Command that got us dispatched.
4718: # $id - Tail of the command, contain the id of the resource
4719: # we want to fetch.
4720: # $client - socket open on the client.
4721: # Return:
4722: # 1 - Inidcating processing can continue.
4723: # Side effects:
4724: # A reply is sent to the client.
4725: #
4726: sub tmp_get_handler {
4727: my ($cmd, $id, $client) = @_;
4728:
4729: my $userinput = "$cmd:$id";
4730:
4731:
4732: $id=~s/\W/\_/g;
4733: my $store;
4734: my $execdir=$perlvar{'lonDaemons'};
4735: if ($store=IO::File->new("$execdir/tmp/$id.tmp")) {
4736: my $reply=<$store>;
1.387 albertel 4737: &Reply( $client, \$reply, $userinput);
1.238 foxr 4738: close $store;
4739: } else {
4740: &Failure( $client, "error: ".($!+0)."IO::File->new Failed ".
4741: "while attempting tmpget\n", $userinput);
4742: }
4743:
4744: return 1;
4745: }
4746: ®ister_handler("tmpget", \&tmp_get_handler, 0, 1, 0);
1.263 albertel 4747:
1.238 foxr 4748: #
4749: # Process the tmpdel command. This command deletes a temp resource
4750: # created by the tmpput command.
4751: #
4752: # Parameters:
4753: # $cmd - Command that got us here.
4754: # $id - Id of the temporary resource created.
4755: # $client - socket open on the client process.
4756: #
4757: # Returns:
4758: # 1 - Indicating processing should continue.
4759: # Side Effects:
4760: # A file is deleted
4761: # A reply is sent to the client.
4762: sub tmp_del_handler {
4763: my ($cmd, $id, $client) = @_;
4764:
4765: my $userinput= "$cmd:$id";
4766:
4767: chomp($id);
4768: $id=~s/\W/\_/g;
4769: my $execdir=$perlvar{'lonDaemons'};
4770: if (unlink("$execdir/tmp/$id.tmp")) {
4771: &Reply($client, "ok\n", $userinput);
4772: } else {
4773: &Failure( $client, "error: ".($!+0)."Unlink tmp Failed ".
4774: "while attempting tmpdel\n", $userinput);
4775: }
4776:
4777: return 1;
4778:
4779: }
4780: ®ister_handler("tmpdel", \&tmp_del_handler, 0, 1, 0);
1.263 albertel 4781:
1.238 foxr 4782: #
1.246 foxr 4783: # Processes the setannounce command. This command
4784: # creates a file named announce.txt in the top directory of
4785: # the documentn root and sets its contents. The announce.txt file is
4786: # printed in its entirety at the LonCAPA login page. Note:
4787: # once the announcement.txt fileis created it cannot be deleted.
4788: # However, setting the contents of the file to empty removes the
4789: # announcement from the login page of loncapa so who cares.
4790: #
4791: # Parameters:
4792: # $cmd - The command that got us dispatched.
4793: # $announcement - The text of the announcement.
4794: # $client - Socket open on the client process.
4795: # Retunrns:
4796: # 1 - Indicating request processing should continue
4797: # Side Effects:
4798: # The file {DocRoot}/announcement.txt is created.
4799: # A reply is sent to $client.
4800: #
4801: sub set_announce_handler {
4802: my ($cmd, $announcement, $client) = @_;
4803:
4804: my $userinput = "$cmd:$announcement";
4805:
4806: chomp($announcement);
4807: $announcement=&unescape($announcement);
4808: if (my $store=IO::File->new('>'.$perlvar{'lonDocRoot'}.
4809: '/announcement.txt')) {
4810: print $store $announcement;
4811: close $store;
4812: &Reply($client, "ok\n", $userinput);
4813: } else {
4814: &Failure($client, "error: ".($!+0)."\n", $userinput);
4815: }
4816:
4817: return 1;
4818: }
4819: ®ister_handler("setannounce", \&set_announce_handler, 0, 1, 0);
1.263 albertel 4820:
1.246 foxr 4821: #
4822: # Return the version of the daemon. This can be used to determine
4823: # the compatibility of cross version installations or, alternatively to
4824: # simply know who's out of date and who isn't. Note that the version
4825: # is returned concatenated with the tail.
4826: # Parameters:
4827: # $cmd - the request that dispatched to us.
4828: # $tail - Tail of the request (client's version?).
4829: # $client - Socket open on the client.
4830: #Returns:
4831: # 1 - continue processing requests.
4832: # Side Effects:
4833: # Replies with version to $client.
4834: sub get_version_handler {
4835: my ($cmd, $tail, $client) = @_;
4836:
4837: my $userinput = $cmd.$tail;
4838:
4839: &Reply($client, &version($userinput)."\n", $userinput);
4840:
4841:
4842: return 1;
4843: }
4844: ®ister_handler("version", \&get_version_handler, 0, 1, 0);
1.263 albertel 4845:
1.246 foxr 4846: # Set the current host and domain. This is used to support
4847: # multihomed systems. Each IP of the system, or even separate daemons
4848: # on the same IP can be treated as handling a separate lonCAPA virtual
4849: # machine. This command selects the virtual lonCAPA. The client always
4850: # knows the right one since it is lonc and it is selecting the domain/system
4851: # from the hosts.tab file.
4852: # Parameters:
4853: # $cmd - Command that dispatched us.
4854: # $tail - Tail of the command (domain/host requested).
4855: # $socket - Socket open on the client.
4856: #
4857: # Returns:
4858: # 1 - Indicates the program should continue to process requests.
4859: # Side-effects:
4860: # The default domain/system context is modified for this daemon.
4861: # a reply is sent to the client.
4862: #
4863: sub set_virtual_host_handler {
4864: my ($cmd, $tail, $socket) = @_;
4865:
4866: my $userinput ="$cmd:$tail";
4867:
4868: &Reply($client, &sethost($userinput)."\n", $userinput);
4869:
4870:
4871: return 1;
4872: }
1.247 albertel 4873: ®ister_handler("sethost", \&set_virtual_host_handler, 0, 1, 0);
1.246 foxr 4874:
4875: # Process a request to exit:
4876: # - "bye" is sent to the client.
4877: # - The client socket is shutdown and closed.
4878: # - We indicate to the caller that we should exit.
4879: # Formal Parameters:
4880: # $cmd - The command that got us here.
4881: # $tail - Tail of the command (empty).
4882: # $client - Socket open on the tail.
4883: # Returns:
4884: # 0 - Indicating the program should exit!!
4885: #
4886: sub exit_handler {
4887: my ($cmd, $tail, $client) = @_;
4888:
4889: my $userinput = "$cmd:$tail";
4890:
4891: &logthis("Client $clientip ($clientname) hanging up: $userinput");
4892: &Reply($client, "bye\n", $userinput);
4893: $client->shutdown(2); # shutdown the socket forcibly.
4894: $client->close();
4895:
4896: return 0;
4897: }
1.248 foxr 4898: ®ister_handler("exit", \&exit_handler, 0,1,1);
4899: ®ister_handler("init", \&exit_handler, 0,1,1);
4900: ®ister_handler("quit", \&exit_handler, 0,1,1);
4901:
4902: # Determine if auto-enrollment is enabled.
4903: # Note that the original had what I believe to be a defect.
4904: # The original returned 0 if the requestor was not a registerd client.
4905: # It should return "refused".
4906: # Formal Parameters:
4907: # $cmd - The command that invoked us.
4908: # $tail - The tail of the command (Extra command parameters.
4909: # $client - The socket open on the client that issued the request.
4910: # Returns:
4911: # 1 - Indicating processing should continue.
4912: #
4913: sub enrollment_enabled_handler {
4914: my ($cmd, $tail, $client) = @_;
4915: my $userinput = $cmd.":".$tail; # For logging purposes.
4916:
4917:
1.337 albertel 4918: my ($cdom) = split(/:/, $tail, 2); # Domain we're asking about.
4919:
1.248 foxr 4920: my $outcome = &localenroll::run($cdom);
1.387 albertel 4921: &Reply($client, \$outcome, $userinput);
1.248 foxr 4922:
4923: return 1;
4924: }
4925: ®ister_handler("autorun", \&enrollment_enabled_handler, 0, 1, 0);
4926:
1.417 raeburn 4927: #
1.423 raeburn 4928: # Validate an institutional code used for a LON-CAPA course.
1.417 raeburn 4929: #
4930: # Formal Parameters:
4931: # $cmd - The command request that got us dispatched.
4932: # $tail - The tail of the command. In this case,
4933: # this is a colon separated set of words that will be split
4934: # into:
1.424 raeburn 4935: # $dom - The domain for which the check of
4936: # institutional course code will occur.
4937: #
4938: # $instcode - The institutional code for the course
4939: # being requested, or validated for rights
4940: # to request.
4941: #
4942: # $owner - The course requestor (who will be the
4943: # course owner, in the form username:domain
4944: #
1.417 raeburn 4945: # $client - Socket open on the client.
4946: # Returns:
4947: # 1 - Indicating processing should continue.
4948: #
4949: sub validate_instcode_handler {
4950: my ($cmd, $tail, $client) = @_;
4951: my $userinput = "$cmd:$tail";
1.423 raeburn 4952: my ($dom,$instcode,$owner) = split(/:/, $tail);
1.422 raeburn 4953: $instcode = &unescape($instcode);
4954: $owner = &unescape($owner);
1.426 raeburn 4955: my ($outcome,$description) =
4956: &localenroll::validate_instcode($dom,$instcode,$owner);
4957: my $result = &escape($outcome).'&'.&escape($description);
4958: &Reply($client, \$result, $userinput);
1.417 raeburn 4959:
4960: return 1;
4961: }
4962: ®ister_handler("autovalidateinstcode", \&validate_instcode_handler, 0, 1, 0);
4963:
1.248 foxr 4964: # Get the official sections for which auto-enrollment is possible.
4965: # Since the admin people won't know about 'unofficial sections'
4966: # we cannot auto-enroll on them.
4967: # Formal Parameters:
4968: # $cmd - The command request that got us dispatched here.
4969: # $tail - The remainder of the request. In our case this
4970: # will be split into:
4971: # $coursecode - The course name from the admin point of view.
4972: # $cdom - The course's domain(?).
4973: # $client - Socket open on the client.
4974: # Returns:
4975: # 1 - Indiciting processing should continue.
4976: #
4977: sub get_sections_handler {
4978: my ($cmd, $tail, $client) = @_;
4979: my $userinput = "$cmd:$tail";
4980:
4981: my ($coursecode, $cdom) = split(/:/, $tail);
4982: my @secs = &localenroll::get_sections($coursecode,$cdom);
4983: my $seclist = &escape(join(':',@secs));
4984:
1.387 albertel 4985: &Reply($client, \$seclist, $userinput);
1.248 foxr 4986:
4987:
4988: return 1;
4989: }
4990: ®ister_handler("autogetsections", \&get_sections_handler, 0, 1, 0);
4991:
4992: # Validate the owner of a new course section.
4993: #
4994: # Formal Parameters:
4995: # $cmd - Command that got us dispatched.
4996: # $tail - the remainder of the command. For us this consists of a
4997: # colon separated string containing:
4998: # $inst - Course Id from the institutions point of view.
4999: # $owner - Proposed owner of the course.
5000: # $cdom - Domain of the course (from the institutions
5001: # point of view?)..
5002: # $client - Socket open on the client.
5003: #
5004: # Returns:
5005: # 1 - Processing should continue.
5006: #
5007: sub validate_course_owner_handler {
5008: my ($cmd, $tail, $client) = @_;
5009: my $userinput = "$cmd:$tail";
1.467.2.1 raeburn 5010: my ($inst_course_id, $owner, $cdom, $coowners) = split(/:/, $tail);
1.248 foxr 5011:
1.336 raeburn 5012: $owner = &unescape($owner);
1.467.2.1 raeburn 5013: $coowners = &unescape($coowners);
5014: my $outcome = &localenroll::new_course($inst_course_id,$owner,$cdom,$coowners);
1.387 albertel 5015: &Reply($client, \$outcome, $userinput);
1.248 foxr 5016:
5017:
5018:
5019: return 1;
5020: }
5021: ®ister_handler("autonewcourse", \&validate_course_owner_handler, 0, 1, 0);
1.263 albertel 5022:
1.248 foxr 5023: #
5024: # Validate a course section in the official schedule of classes
5025: # from the institutions point of view (part of autoenrollment).
5026: #
5027: # Formal Parameters:
5028: # $cmd - The command request that got us dispatched.
5029: # $tail - The tail of the command. In this case,
5030: # this is a colon separated set of words that will be split
5031: # into:
5032: # $inst_course_id - The course/section id from the
5033: # institutions point of view.
5034: # $cdom - The domain from the institutions
5035: # point of view.
5036: # $client - Socket open on the client.
5037: # Returns:
5038: # 1 - Indicating processing should continue.
5039: #
5040: sub validate_course_section_handler {
5041: my ($cmd, $tail, $client) = @_;
5042: my $userinput = "$cmd:$tail";
5043: my ($inst_course_id, $cdom) = split(/:/, $tail);
5044:
5045: my $outcome=&localenroll::validate_courseID($inst_course_id,$cdom);
1.387 albertel 5046: &Reply($client, \$outcome, $userinput);
1.248 foxr 5047:
5048:
5049: return 1;
5050: }
5051: ®ister_handler("autovalidatecourse", \&validate_course_section_handler, 0, 1, 0);
5052:
5053: #
1.340 raeburn 5054: # Validate course owner's access to enrollment data for specific class section.
5055: #
5056: #
5057: # Formal Parameters:
5058: # $cmd - The command request that got us dispatched.
5059: # $tail - The tail of the command. In this case this is a colon separated
5060: # set of words that will be split into:
5061: # $inst_class - Institutional code for the specific class section
5062: # $courseowner - The escaped username:domain of the course owner
5063: # $cdom - The domain of the course from the institution's
5064: # point of view.
5065: # $client - The socket open on the client.
5066: # Returns:
5067: # 1 - continue processing.
5068: #
5069:
5070: sub validate_class_access_handler {
5071: my ($cmd, $tail, $client) = @_;
5072: my $userinput = "$cmd:$tail";
1.383 raeburn 5073: my ($inst_class,$ownerlist,$cdom) = split(/:/, $tail);
1.392 raeburn 5074: my $owners = &unescape($ownerlist);
1.341 albertel 5075: my $outcome;
5076: eval {
5077: local($SIG{__DIE__})='DEFAULT';
1.392 raeburn 5078: $outcome=&localenroll::check_section($inst_class,$owners,$cdom);
1.341 albertel 5079: };
1.387 albertel 5080: &Reply($client,\$outcome, $userinput);
1.340 raeburn 5081:
5082: return 1;
5083: }
5084: ®ister_handler("autovalidateclass_sec", \&validate_class_access_handler, 0, 1, 0);
5085:
5086: #
5087: # Create a password for a new LON-CAPA user added by auto-enrollment.
5088: # Only used for case where authentication method for new user is localauth
1.248 foxr 5089: #
5090: # Formal Parameters:
5091: # $cmd - The command request that got us dispatched.
5092: # $tail - The tail of the command. In this case this is a colon separated
5093: # set of words that will be split into:
1.340 raeburn 5094: # $authparam - An authentication parameter (localauth parameter).
1.248 foxr 5095: # $cdom - The domain of the course from the institution's
5096: # point of view.
5097: # $client - The socket open on the client.
5098: # Returns:
5099: # 1 - continue processing.
5100: #
5101: sub create_auto_enroll_password_handler {
5102: my ($cmd, $tail, $client) = @_;
5103: my $userinput = "$cmd:$tail";
5104:
5105: my ($authparam, $cdom) = split(/:/, $userinput);
5106:
5107: my ($create_passwd,$authchk);
5108: ($authparam,
5109: $create_passwd,
5110: $authchk) = &localenroll::create_password($authparam,$cdom);
5111:
5112: &Reply($client, &escape($authparam.':'.$create_passwd.':'.$authchk)."\n",
5113: $userinput);
5114:
5115:
5116: return 1;
5117: }
5118: ®ister_handler("autocreatepassword", \&create_auto_enroll_password_handler,
5119: 0, 1, 0);
5120:
5121: # Retrieve and remove temporary files created by/during autoenrollment.
5122: #
5123: # Formal Parameters:
5124: # $cmd - The command that got us dispatched.
5125: # $tail - The tail of the command. In our case this is a colon
5126: # separated list that will be split into:
5127: # $filename - The name of the file to remove.
5128: # The filename is given as a path relative to
5129: # the LonCAPA temp file directory.
5130: # $client - Socket open on the client.
5131: #
5132: # Returns:
5133: # 1 - Continue processing.
5134: sub retrieve_auto_file_handler {
5135: my ($cmd, $tail, $client) = @_;
5136: my $userinput = "cmd:$tail";
5137:
5138: my ($filename) = split(/:/, $tail);
5139:
5140: my $source = $perlvar{'lonDaemons'}.'/tmp/'.$filename;
5141: if ( (-e $source) && ($filename ne '') ) {
5142: my $reply = '';
5143: if (open(my $fh,$source)) {
5144: while (<$fh>) {
5145: chomp($_);
5146: $_ =~ s/^\s+//g;
5147: $_ =~ s/\s+$//g;
5148: $reply .= $_;
5149: }
5150: close($fh);
5151: &Reply($client, &escape($reply)."\n", $userinput);
5152:
5153: # Does this have to be uncommented??!? (RF).
5154: #
5155: # unlink($source);
5156: } else {
5157: &Failure($client, "error\n", $userinput);
5158: }
5159: } else {
5160: &Failure($client, "error\n", $userinput);
5161: }
5162:
5163:
5164: return 1;
5165: }
5166: ®ister_handler("autoretrieve", \&retrieve_auto_file_handler, 0,1,0);
5167:
1.423 raeburn 5168: sub crsreq_checks_handler {
5169: my ($cmd, $tail, $client) = @_;
5170: my $userinput = "$cmd:$tail";
5171: my $dom = $tail;
5172: my $result;
1.424 raeburn 5173: my @reqtypes = ('official','unofficial','community');
1.423 raeburn 5174: eval {
5175: local($SIG{__DIE__})='DEFAULT';
5176: my %validations;
1.424 raeburn 5177: my $response = &localenroll::crsreq_checks($dom,\@reqtypes,
5178: \%validations);
1.423 raeburn 5179: if ($response eq 'ok') {
5180: foreach my $key (keys(%validations)) {
5181: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($validations{$key}).'&';
5182: }
5183: $result =~ s/\&$//;
5184: } else {
5185: $result = 'error';
5186: }
5187: };
5188: if (!$@) {
5189: &Reply($client, \$result, $userinput);
5190: } else {
5191: &Failure($client,"unknown_cmd\n",$userinput);
5192: }
5193: return 1;
5194: }
5195: ®ister_handler("autocrsreqchecks", \&crsreq_checks_handler, 0, 1, 0);
5196:
5197: sub validate_crsreq_handler {
5198: my ($cmd, $tail, $client) = @_;
5199: my $userinput = "$cmd:$tail";
5200: my ($dom,$owner,$crstype,$inststatuslist,$instcode,$instseclist) = split(/:/, $tail);
5201: $instcode = &unescape($instcode);
5202: $owner = &unescape($owner);
5203: $crstype = &unescape($crstype);
5204: $inststatuslist = &unescape($inststatuslist);
5205: $instcode = &unescape($instcode);
5206: $instseclist = &unescape($instseclist);
5207: my $outcome;
5208: eval {
5209: local($SIG{__DIE__})='DEFAULT';
5210: $outcome = &localenroll::validate_crsreq($dom,$owner,$crstype,
5211: $inststatuslist,$instcode,
5212: $instseclist);
5213: };
5214: if (!$@) {
5215: &Reply($client, \$outcome, $userinput);
5216: } else {
5217: &Failure($client,"unknown_cmd\n",$userinput);
5218: }
5219: return 1;
5220: }
5221: ®ister_handler("autocrsreqvalidation", \&validate_crsreq_handler, 0, 1, 0);
5222:
1.248 foxr 5223: #
5224: # Read and retrieve institutional code format (for support form).
5225: # Formal Parameters:
5226: # $cmd - Command that dispatched us.
5227: # $tail - Tail of the command. In this case it conatins
5228: # the course domain and the coursename.
5229: # $client - Socket open on the client.
5230: # Returns:
5231: # 1 - Continue processing.
5232: #
5233: sub get_institutional_code_format_handler {
5234: my ($cmd, $tail, $client) = @_;
5235: my $userinput = "$cmd:$tail";
5236:
5237: my $reply;
5238: my($cdom,$course) = split(/:/,$tail);
5239: my @pairs = split/\&/,$course;
5240: my %instcodes = ();
5241: my %codes = ();
5242: my @codetitles = ();
5243: my %cat_titles = ();
5244: my %cat_order = ();
5245: foreach (@pairs) {
5246: my ($key,$value) = split/=/,$_;
5247: $instcodes{&unescape($key)} = &unescape($value);
5248: }
5249: my $formatreply = &localenroll::instcode_format($cdom,
5250: \%instcodes,
5251: \%codes,
5252: \@codetitles,
5253: \%cat_titles,
5254: \%cat_order);
5255: if ($formatreply eq 'ok') {
1.365 albertel 5256: my $codes_str = &Apache::lonnet::hash2str(%codes);
5257: my $codetitles_str = &Apache::lonnet::array2str(@codetitles);
5258: my $cat_titles_str = &Apache::lonnet::hash2str(%cat_titles);
5259: my $cat_order_str = &Apache::lonnet::hash2str(%cat_order);
1.248 foxr 5260: &Reply($client,
5261: $codes_str.':'.$codetitles_str.':'.$cat_titles_str.':'
5262: .$cat_order_str."\n",
5263: $userinput);
5264: } else {
5265: # this else branch added by RF since if not ok, lonc will
5266: # hang waiting on reply until timeout.
5267: #
5268: &Reply($client, "format_error\n", $userinput);
5269: }
5270:
5271: return 1;
5272: }
1.265 albertel 5273: ®ister_handler("autoinstcodeformat",
5274: \&get_institutional_code_format_handler,0,1,0);
1.246 foxr 5275:
1.345 raeburn 5276: sub get_institutional_defaults_handler {
5277: my ($cmd, $tail, $client) = @_;
5278: my $userinput = "$cmd:$tail";
5279:
5280: my $dom = $tail;
5281: my %defaults_hash;
5282: my @code_order;
5283: my $outcome;
5284: eval {
5285: local($SIG{__DIE__})='DEFAULT';
5286: $outcome = &localenroll::instcode_defaults($dom,\%defaults_hash,
5287: \@code_order);
5288: };
5289: if (!$@) {
5290: if ($outcome eq 'ok') {
5291: my $result='';
5292: while (my ($key,$value) = each(%defaults_hash)) {
5293: $result.=&escape($key).'='.&escape($value).'&';
5294: }
5295: $result .= 'code_order='.&escape(join('&',@code_order));
1.387 albertel 5296: &Reply($client,\$result,$userinput);
1.345 raeburn 5297: } else {
5298: &Reply($client,"error\n", $userinput);
5299: }
5300: } else {
5301: &Failure($client,"unknown_cmd\n",$userinput);
5302: }
5303: }
5304: ®ister_handler("autoinstcodedefaults",
5305: \&get_institutional_defaults_handler,0,1,0);
5306:
1.416 raeburn 5307: sub get_possible_instcodes_handler {
5308: my ($cmd, $tail, $client) = @_;
5309: my $userinput = "$cmd:$tail";
5310:
5311: my $reply;
5312: my $cdom = $tail;
1.417 raeburn 5313: my (@codetitles,%cat_titles,%cat_order,@code_order);
1.416 raeburn 5314: my $formatreply = &localenroll::possible_instcodes($cdom,
5315: \@codetitles,
5316: \%cat_titles,
1.417 raeburn 5317: \%cat_order,
5318: \@code_order);
1.416 raeburn 5319: if ($formatreply eq 'ok') {
5320: my $result = join('&',map {&escape($_);} (@codetitles)).':';
1.417 raeburn 5321: $result .= join('&',map {&escape($_);} (@code_order)).':';
1.416 raeburn 5322: foreach my $key (keys(%cat_titles)) {
5323: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($cat_titles{$key}).'&';
5324: }
5325: $result =~ s/\&$//;
5326: $result .= ':';
5327: foreach my $key (keys(%cat_order)) {
5328: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($cat_order{$key}).'&';
5329: }
5330: $result =~ s/\&$//;
5331: &Reply($client,\$result,$userinput);
5332: } else {
5333: &Reply($client, "format_error\n", $userinput);
5334: }
5335: return 1;
5336: }
5337: ®ister_handler("autopossibleinstcodes",
5338: \&get_possible_instcodes_handler,0,1,0);
5339:
1.381 raeburn 5340: sub get_institutional_user_rules {
5341: my ($cmd, $tail, $client) = @_;
5342: my $userinput = "$cmd:$tail";
5343: my $dom = &unescape($tail);
5344: my (%rules_hash,@rules_order);
5345: my $outcome;
5346: eval {
5347: local($SIG{__DIE__})='DEFAULT';
5348: $outcome = &localenroll::username_rules($dom,\%rules_hash,\@rules_order);
5349: };
5350: if (!$@) {
5351: if ($outcome eq 'ok') {
5352: my $result;
5353: foreach my $key (keys(%rules_hash)) {
5354: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($rules_hash{$key}).'&';
5355: }
5356: $result =~ s/\&$//;
5357: $result .= ':';
5358: if (@rules_order > 0) {
5359: foreach my $item (@rules_order) {
5360: $result .= &escape($item).'&';
5361: }
5362: }
5363: $result =~ s/\&$//;
1.387 albertel 5364: &Reply($client,\$result,$userinput);
1.381 raeburn 5365: } else {
5366: &Reply($client,"error\n", $userinput);
5367: }
5368: } else {
5369: &Failure($client,"unknown_cmd\n",$userinput);
5370: }
5371: }
5372: ®ister_handler("instuserrules",\&get_institutional_user_rules,0,1,0);
5373:
1.389 raeburn 5374: sub get_institutional_id_rules {
5375: my ($cmd, $tail, $client) = @_;
5376: my $userinput = "$cmd:$tail";
5377: my $dom = &unescape($tail);
5378: my (%rules_hash,@rules_order);
5379: my $outcome;
5380: eval {
5381: local($SIG{__DIE__})='DEFAULT';
5382: $outcome = &localenroll::id_rules($dom,\%rules_hash,\@rules_order);
5383: };
5384: if (!$@) {
5385: if ($outcome eq 'ok') {
5386: my $result;
5387: foreach my $key (keys(%rules_hash)) {
5388: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($rules_hash{$key}).'&';
5389: }
5390: $result =~ s/\&$//;
5391: $result .= ':';
5392: if (@rules_order > 0) {
5393: foreach my $item (@rules_order) {
5394: $result .= &escape($item).'&';
5395: }
5396: }
5397: $result =~ s/\&$//;
5398: &Reply($client,\$result,$userinput);
5399: } else {
5400: &Reply($client,"error\n", $userinput);
5401: }
5402: } else {
5403: &Failure($client,"unknown_cmd\n",$userinput);
5404: }
5405: }
5406: ®ister_handler("instidrules",\&get_institutional_id_rules,0,1,0);
5407:
1.397 raeburn 5408: sub get_institutional_selfcreate_rules {
1.396 raeburn 5409: my ($cmd, $tail, $client) = @_;
5410: my $userinput = "$cmd:$tail";
5411: my $dom = &unescape($tail);
5412: my (%rules_hash,@rules_order);
5413: my $outcome;
5414: eval {
5415: local($SIG{__DIE__})='DEFAULT';
1.397 raeburn 5416: $outcome = &localenroll::selfcreate_rules($dom,\%rules_hash,\@rules_order);
1.396 raeburn 5417: };
5418: if (!$@) {
5419: if ($outcome eq 'ok') {
5420: my $result;
5421: foreach my $key (keys(%rules_hash)) {
5422: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($rules_hash{$key}).'&';
5423: }
5424: $result =~ s/\&$//;
5425: $result .= ':';
5426: if (@rules_order > 0) {
5427: foreach my $item (@rules_order) {
5428: $result .= &escape($item).'&';
5429: }
5430: }
5431: $result =~ s/\&$//;
5432: &Reply($client,\$result,$userinput);
5433: } else {
5434: &Reply($client,"error\n", $userinput);
5435: }
5436: } else {
5437: &Failure($client,"unknown_cmd\n",$userinput);
5438: }
5439: }
1.397 raeburn 5440: ®ister_handler("instemailrules",\&get_institutional_selfcreate_rules,0,1,0);
1.396 raeburn 5441:
1.381 raeburn 5442:
5443: sub institutional_username_check {
5444: my ($cmd, $tail, $client) = @_;
5445: my $userinput = "$cmd:$tail";
5446: my %rulecheck;
5447: my $outcome;
5448: my ($udom,$uname,@rules) = split(/:/,$tail);
5449: $udom = &unescape($udom);
5450: $uname = &unescape($uname);
5451: @rules = map {&unescape($_);} (@rules);
5452: eval {
5453: local($SIG{__DIE__})='DEFAULT';
5454: $outcome = &localenroll::username_check($udom,$uname,\@rules,\%rulecheck);
5455: };
5456: if (!$@) {
5457: if ($outcome eq 'ok') {
5458: my $result='';
5459: foreach my $key (keys(%rulecheck)) {
5460: $result.=&escape($key).'='.&Apache::lonnet::freeze_escape($rulecheck{$key}).'&';
5461: }
1.387 albertel 5462: &Reply($client,\$result,$userinput);
1.381 raeburn 5463: } else {
5464: &Reply($client,"error\n", $userinput);
5465: }
5466: } else {
5467: &Failure($client,"unknown_cmd\n",$userinput);
5468: }
5469: }
5470: ®ister_handler("instrulecheck",\&institutional_username_check,0,1,0);
5471:
1.389 raeburn 5472: sub institutional_id_check {
5473: my ($cmd, $tail, $client) = @_;
5474: my $userinput = "$cmd:$tail";
5475: my %rulecheck;
5476: my $outcome;
5477: my ($udom,$id,@rules) = split(/:/,$tail);
5478: $udom = &unescape($udom);
5479: $id = &unescape($id);
5480: @rules = map {&unescape($_);} (@rules);
5481: eval {
5482: local($SIG{__DIE__})='DEFAULT';
5483: $outcome = &localenroll::id_check($udom,$id,\@rules,\%rulecheck);
5484: };
5485: if (!$@) {
5486: if ($outcome eq 'ok') {
5487: my $result='';
5488: foreach my $key (keys(%rulecheck)) {
5489: $result.=&escape($key).'='.&Apache::lonnet::freeze_escape($rulecheck{$key}).'&';
5490: }
5491: &Reply($client,\$result,$userinput);
5492: } else {
5493: &Reply($client,"error\n", $userinput);
5494: }
5495: } else {
5496: &Failure($client,"unknown_cmd\n",$userinput);
5497: }
5498: }
5499: ®ister_handler("instidrulecheck",\&institutional_id_check,0,1,0);
1.345 raeburn 5500:
1.397 raeburn 5501: sub institutional_selfcreate_check {
1.396 raeburn 5502: my ($cmd, $tail, $client) = @_;
5503: my $userinput = "$cmd:$tail";
5504: my %rulecheck;
5505: my $outcome;
5506: my ($udom,$email,@rules) = split(/:/,$tail);
5507: $udom = &unescape($udom);
5508: $email = &unescape($email);
5509: @rules = map {&unescape($_);} (@rules);
5510: eval {
5511: local($SIG{__DIE__})='DEFAULT';
1.397 raeburn 5512: $outcome = &localenroll::selfcreate_check($udom,$email,\@rules,\%rulecheck);
1.396 raeburn 5513: };
5514: if (!$@) {
5515: if ($outcome eq 'ok') {
5516: my $result='';
5517: foreach my $key (keys(%rulecheck)) {
5518: $result.=&escape($key).'='.&Apache::lonnet::freeze_escape($rulecheck{$key}).'&';
5519: }
5520: &Reply($client,\$result,$userinput);
5521: } else {
5522: &Reply($client,"error\n", $userinput);
5523: }
5524: } else {
5525: &Failure($client,"unknown_cmd\n",$userinput);
5526: }
5527: }
1.397 raeburn 5528: ®ister_handler("instselfcreatecheck",\&institutional_selfcreate_check,0,1,0);
1.396 raeburn 5529:
1.317 raeburn 5530: # Get domain specific conditions for import of student photographs to a course
5531: #
5532: # Retrieves information from photo_permission subroutine in localenroll.
5533: # Returns outcome (ok) if no processing errors, and whether course owner is
5534: # required to accept conditions of use (yes/no).
5535: #
5536: #
5537: sub photo_permission_handler {
5538: my ($cmd, $tail, $client) = @_;
5539: my $userinput = "$cmd:$tail";
5540: my $cdom = $tail;
5541: my ($perm_reqd,$conditions);
1.320 albertel 5542: my $outcome;
5543: eval {
5544: local($SIG{__DIE__})='DEFAULT';
5545: $outcome = &localenroll::photo_permission($cdom,\$perm_reqd,
5546: \$conditions);
5547: };
5548: if (!$@) {
5549: &Reply($client, &escape($outcome.':'.$perm_reqd.':'. $conditions)."\n",
5550: $userinput);
5551: } else {
5552: &Failure($client,"unknown_cmd\n",$userinput);
5553: }
5554: return 1;
1.317 raeburn 5555: }
5556: ®ister_handler("autophotopermission",\&photo_permission_handler,0,1,0);
5557:
5558: #
5559: # Checks if student photo is available for a user in the domain, in the user's
5560: # directory (in /userfiles/internal/studentphoto.jpg).
5561: # Uses localstudentphoto:fetch() to ensure there is an up to date copy of
5562: # the student's photo.
5563:
5564: sub photo_check_handler {
5565: my ($cmd, $tail, $client) = @_;
5566: my $userinput = "$cmd:$tail";
5567: my ($udom,$uname,$pid) = split(/:/,$tail);
5568: $udom = &unescape($udom);
5569: $uname = &unescape($uname);
5570: $pid = &unescape($pid);
5571: my $path=&propath($udom,$uname).'/userfiles/internal/';
5572: if (!-e $path) {
5573: &mkpath($path);
5574: }
5575: my $response;
5576: my $result = &localstudentphoto::fetch($udom,$uname,$pid,\$response);
5577: $result .= ':'.$response;
5578: &Reply($client, &escape($result)."\n",$userinput);
1.320 albertel 5579: return 1;
1.317 raeburn 5580: }
5581: ®ister_handler("autophotocheck",\&photo_check_handler,0,1,0);
5582:
5583: #
5584: # Retrieve information from localenroll about whether to provide a button
5585: # for users who have enbled import of student photos to initiate an
5586: # update of photo files for registered students. Also include
5587: # comment to display alongside button.
5588:
5589: sub photo_choice_handler {
5590: my ($cmd, $tail, $client) = @_;
5591: my $userinput = "$cmd:$tail";
5592: my $cdom = &unescape($tail);
1.320 albertel 5593: my ($update,$comment);
5594: eval {
5595: local($SIG{__DIE__})='DEFAULT';
5596: ($update,$comment) = &localenroll::manager_photo_update($cdom);
5597: };
5598: if (!$@) {
5599: &Reply($client,&escape($update).':'.&escape($comment)."\n",$userinput);
5600: } else {
5601: &Failure($client,"unknown_cmd\n",$userinput);
5602: }
5603: return 1;
1.317 raeburn 5604: }
5605: ®ister_handler("autophotochoice",\&photo_choice_handler,0,1,0);
5606:
1.265 albertel 5607: #
5608: # Gets a student's photo to exist (in the correct image type) in the user's
5609: # directory.
5610: # Formal Parameters:
5611: # $cmd - The command request that got us dispatched.
5612: # $tail - A colon separated set of words that will be split into:
5613: # $domain - student's domain
5614: # $uname - student username
5615: # $type - image type desired
5616: # $client - The socket open on the client.
5617: # Returns:
5618: # 1 - continue processing.
1.317 raeburn 5619:
1.265 albertel 5620: sub student_photo_handler {
5621: my ($cmd, $tail, $client) = @_;
1.317 raeburn 5622: my ($domain,$uname,$ext,$type) = split(/:/, $tail);
1.265 albertel 5623:
1.317 raeburn 5624: my $path=&propath($domain,$uname). '/userfiles/internal/';
5625: my $filename = 'studentphoto.'.$ext;
5626: if ($type eq 'thumbnail') {
5627: $filename = 'studentphoto_tn.'.$ext;
5628: }
5629: if (-e $path.$filename) {
1.265 albertel 5630: &Reply($client,"ok\n","$cmd:$tail");
5631: return 1;
5632: }
5633: &mkpath($path);
1.317 raeburn 5634: my $file;
5635: if ($type eq 'thumbnail') {
1.320 albertel 5636: eval {
5637: local($SIG{__DIE__})='DEFAULT';
5638: $file=&localstudentphoto::fetch_thumbnail($domain,$uname);
5639: };
1.317 raeburn 5640: } else {
5641: $file=&localstudentphoto::fetch($domain,$uname);
5642: }
1.265 albertel 5643: if (!$file) {
5644: &Failure($client,"unavailable\n","$cmd:$tail");
5645: return 1;
5646: }
1.317 raeburn 5647: if (!-e $path.$filename) { &convert_photo($file,$path.$filename); }
5648: if (-e $path.$filename) {
1.265 albertel 5649: &Reply($client,"ok\n","$cmd:$tail");
5650: return 1;
5651: }
5652: &Failure($client,"unable_to_convert\n","$cmd:$tail");
5653: return 1;
5654: }
5655: ®ister_handler("studentphoto", \&student_photo_handler, 0, 1, 0);
1.246 foxr 5656:
1.361 raeburn 5657: sub inst_usertypes_handler {
5658: my ($cmd, $domain, $client) = @_;
5659: my $res;
5660: my $userinput = $cmd.":".$domain; # For logging purposes.
1.370 albertel 5661: my (%typeshash,@order,$result);
5662: eval {
5663: local($SIG{__DIE__})='DEFAULT';
5664: $result=&localenroll::inst_usertypes($domain,\%typeshash,\@order);
5665: };
5666: if ($result eq 'ok') {
1.361 raeburn 5667: if (keys(%typeshash) > 0) {
5668: foreach my $key (keys(%typeshash)) {
5669: $res.=&escape($key).'='.&escape($typeshash{$key}).'&';
5670: }
5671: }
5672: $res=~s/\&$//;
5673: $res .= ':';
5674: if (@order > 0) {
5675: foreach my $item (@order) {
5676: $res .= &escape($item).'&';
5677: }
5678: }
5679: $res=~s/\&$//;
5680: }
1.387 albertel 5681: &Reply($client, \$res, $userinput);
1.361 raeburn 5682: return 1;
5683: }
5684: ®ister_handler("inst_usertypes", \&inst_usertypes_handler, 0, 1, 0);
5685:
1.264 albertel 5686: # mkpath makes all directories for a file, expects an absolute path with a
5687: # file or a trailing / if just a dir is passed
5688: # returns 1 on success 0 on failure
5689: sub mkpath {
5690: my ($file)=@_;
5691: my @parts=split(/\//,$file,-1);
5692: my $now=$parts[0].'/'.$parts[1].'/'.$parts[2];
5693: for (my $i=3;$i<= ($#parts-1);$i++) {
1.265 albertel 5694: $now.='/'.$parts[$i];
1.264 albertel 5695: if (!-e $now) {
5696: if (!mkdir($now,0770)) { return 0; }
5697: }
5698: }
5699: return 1;
5700: }
5701:
1.207 foxr 5702: #---------------------------------------------------------------
5703: #
5704: # Getting, decoding and dispatching requests:
5705: #
5706: #
5707: # Get a Request:
5708: # Gets a Request message from the client. The transaction
5709: # is defined as a 'line' of text. We remove the new line
5710: # from the text line.
1.226 foxr 5711: #
1.211 albertel 5712: sub get_request {
1.207 foxr 5713: my $input = <$client>;
5714: chomp($input);
1.226 foxr 5715:
1.234 foxr 5716: &Debug("get_request: Request = $input\n");
1.207 foxr 5717:
5718: &status('Processing '.$clientname.':'.$input);
5719:
5720: return $input;
5721: }
1.212 foxr 5722: #---------------------------------------------------------------
5723: #
5724: # Process a request. This sub should shrink as each action
5725: # gets farmed out into a separat sub that is registered
5726: # with the dispatch hash.
5727: #
5728: # Parameters:
5729: # user_input - The request received from the client (lonc).
5730: # Returns:
5731: # true to keep processing, false if caller should exit.
5732: #
5733: sub process_request {
5734: my ($userinput) = @_; # Easier for now to break style than to
5735: # fix all the userinput -> user_input.
5736: my $wasenc = 0; # True if request was encrypted.
5737: # ------------------------------------------------------------ See if encrypted
1.322 albertel 5738: # for command
5739: # sethost:<server>
5740: # <command>:<args>
5741: # we just send it to the processor
5742: # for
5743: # sethost:<server>:<command>:<args>
5744: # we do the implict set host and then do the command
5745: if ($userinput =~ /^sethost:/) {
5746: (my $cmd,my $newid,$userinput) = split(':',$userinput,3);
5747: if (defined($userinput)) {
5748: &sethost("$cmd:$newid");
5749: } else {
5750: $userinput = "$cmd:$newid";
5751: }
5752: }
5753:
1.212 foxr 5754: if ($userinput =~ /^enc/) {
5755: $userinput = decipher($userinput);
5756: $wasenc=1;
5757: if(!$userinput) { # Cipher not defined.
1.251 foxr 5758: &Failure($client, "error: Encrypted data without negotated key\n");
1.212 foxr 5759: return 0;
5760: }
5761: }
5762: Debug("process_request: $userinput\n");
5763:
1.213 foxr 5764: #
5765: # The 'correct way' to add a command to lond is now to
5766: # write a sub to execute it and Add it to the command dispatch
5767: # hash via a call to register_handler.. The comments to that
5768: # sub should give you enough to go on to show how to do this
5769: # along with the examples that are building up as this code
5770: # is getting refactored. Until all branches of the
5771: # if/elseif monster below have been factored out into
5772: # separate procesor subs, if the dispatch hash is missing
5773: # the command keyword, we will fall through to the remainder
5774: # of the if/else chain below in order to keep this thing in
5775: # working order throughout the transmogrification.
5776:
5777: my ($command, $tail) = split(/:/, $userinput, 2);
5778: chomp($command);
5779: chomp($tail);
5780: $tail =~ s/(\r)//; # This helps people debugging with e.g. telnet.
1.214 foxr 5781: $command =~ s/(\r)//; # And this too for parameterless commands.
5782: if(!$tail) {
5783: $tail =""; # defined but blank.
5784: }
1.213 foxr 5785:
5786: &Debug("Command received: $command, encoded = $wasenc");
5787:
5788: if(defined $Dispatcher{$command}) {
5789:
5790: my $dispatch_info = $Dispatcher{$command};
5791: my $handler = $$dispatch_info[0];
5792: my $need_encode = $$dispatch_info[1];
5793: my $client_types = $$dispatch_info[2];
5794: Debug("Matched dispatch hash: mustencode: $need_encode "
5795: ."ClientType $client_types");
5796:
5797: # Validate the request:
5798:
5799: my $ok = 1;
5800: my $requesterprivs = 0;
5801: if(&isClient()) {
5802: $requesterprivs |= $CLIENT_OK;
5803: }
5804: if(&isManager()) {
5805: $requesterprivs |= $MANAGER_OK;
5806: }
5807: if($need_encode && (!$wasenc)) {
5808: Debug("Must encode but wasn't: $need_encode $wasenc");
5809: $ok = 0;
5810: }
5811: if(($client_types & $requesterprivs) == 0) {
5812: Debug("Client not privileged to do this operation");
5813: $ok = 0;
5814: }
5815:
5816: if($ok) {
5817: Debug("Dispatching to handler $command $tail");
5818: my $keep_going = &$handler($command, $tail, $client);
5819: return $keep_going;
5820: } else {
5821: Debug("Refusing to dispatch because client did not match requirements");
5822: Failure($client, "refused\n", $userinput);
5823: return 1;
5824: }
5825:
5826: }
5827:
1.262 foxr 5828: print $client "unknown_cmd\n";
1.212 foxr 5829: # -------------------------------------------------------------------- complete
5830: Debug("process_request - returning 1");
5831: return 1;
5832: }
1.207 foxr 5833: #
5834: # Decipher encoded traffic
5835: # Parameters:
5836: # input - Encoded data.
5837: # Returns:
5838: # Decoded data or undef if encryption key was not yet negotiated.
5839: # Implicit input:
5840: # cipher - This global holds the negotiated encryption key.
5841: #
1.211 albertel 5842: sub decipher {
1.207 foxr 5843: my ($input) = @_;
5844: my $output = '';
1.212 foxr 5845:
5846:
1.207 foxr 5847: if($cipher) {
5848: my($enc, $enclength, $encinput) = split(/:/, $input);
5849: for(my $encidx = 0; $encidx < length($encinput); $encidx += 16) {
5850: $output .=
5851: $cipher->decrypt(pack("H16", substr($encinput, $encidx, 16)));
5852: }
5853: return substr($output, 0, $enclength);
5854: } else {
5855: return undef;
5856: }
5857: }
5858:
5859: #
5860: # Register a command processor. This function is invoked to register a sub
5861: # to process a request. Once registered, the ProcessRequest sub can automatically
5862: # dispatch requests to an appropriate sub, and do the top level validity checking
5863: # as well:
5864: # - Is the keyword recognized.
5865: # - Is the proper client type attempting the request.
5866: # - Is the request encrypted if it has to be.
5867: # Parameters:
5868: # $request_name - Name of the request being registered.
5869: # This is the command request that will match
5870: # against the hash keywords to lookup the information
5871: # associated with the dispatch information.
5872: # $procedure - Reference to a sub to call to process the request.
5873: # All subs get called as follows:
5874: # Procedure($cmd, $tail, $replyfd, $key)
5875: # $cmd - the actual keyword that invoked us.
5876: # $tail - the tail of the request that invoked us.
5877: # $replyfd- File descriptor connected to the client
5878: # $must_encode - True if the request must be encoded to be good.
5879: # $client_ok - True if it's ok for a client to request this.
5880: # $manager_ok - True if it's ok for a manager to request this.
5881: # Side effects:
5882: # - On success, the Dispatcher hash has an entry added for the key $RequestName
5883: # - On failure, the program will die as it's a bad internal bug to try to
5884: # register a duplicate command handler.
5885: #
1.211 albertel 5886: sub register_handler {
1.212 foxr 5887: my ($request_name,$procedure,$must_encode, $client_ok,$manager_ok) = @_;
1.207 foxr 5888:
5889: # Don't allow duplication#
5890:
5891: if (defined $Dispatcher{$request_name}) {
5892: die "Attempting to define a duplicate request handler for $request_name\n";
5893: }
5894: # Build the client type mask:
5895:
5896: my $client_type_mask = 0;
5897: if($client_ok) {
5898: $client_type_mask |= $CLIENT_OK;
5899: }
5900: if($manager_ok) {
5901: $client_type_mask |= $MANAGER_OK;
5902: }
5903:
5904: # Enter the hash:
5905:
5906: my @entry = ($procedure, $must_encode, $client_type_mask);
5907:
5908: $Dispatcher{$request_name} = \@entry;
5909:
5910: }
5911:
5912:
5913: #------------------------------------------------------------------
5914:
5915:
5916:
5917:
1.141 foxr 5918: #
1.96 foxr 5919: # Convert an error return code from lcpasswd to a string value.
5920: #
5921: sub lcpasswdstrerror {
5922: my $ErrorCode = shift;
1.97 foxr 5923: if(($ErrorCode < 0) || ($ErrorCode > $lastpwderror)) {
1.96 foxr 5924: return "lcpasswd Unrecognized error return value ".$ErrorCode;
5925: } else {
1.98 foxr 5926: return $passwderrors[$ErrorCode];
1.96 foxr 5927: }
5928: }
5929:
1.97 foxr 5930: #
5931: # Convert an error return code from lcuseradd to a string value:
5932: #
5933: sub lcuseraddstrerror {
5934: my $ErrorCode = shift;
5935: if(($ErrorCode < 0) || ($ErrorCode > $lastadderror)) {
5936: return "lcuseradd - Unrecognized error code: ".$ErrorCode;
5937: } else {
1.98 foxr 5938: return $adderrors[$ErrorCode];
1.97 foxr 5939: }
5940: }
5941:
1.23 harris41 5942: # grabs exception and records it to log before exiting
5943: sub catchexception {
1.27 albertel 5944: my ($error)=@_;
1.25 www 5945: $SIG{'QUIT'}='DEFAULT';
5946: $SIG{__DIE__}='DEFAULT';
1.165 albertel 5947: &status("Catching exception");
1.190 albertel 5948: &logthis("<font color='red'>CRITICAL: "
1.373 albertel 5949: ."ABNORMAL EXIT. Child $$ for server ".$perlvar{'lonHostID'}." died through "
1.27 albertel 5950: ."a crash with this error msg->[$error]</font>");
1.57 www 5951: &logthis('Famous last words: '.$status.' - '.$lastlog);
1.27 albertel 5952: if ($client) { print $client "error: $error\n"; }
1.59 www 5953: $server->close();
1.27 albertel 5954: die($error);
1.23 harris41 5955: }
1.63 www 5956: sub timeout {
1.165 albertel 5957: &status("Handling Timeout");
1.190 albertel 5958: &logthis("<font color='red'>CRITICAL: TIME OUT ".$$."</font>");
1.63 www 5959: &catchexception('Timeout');
5960: }
1.22 harris41 5961: # -------------------------------- Set signal handlers to record abnormal exits
5962:
1.226 foxr 5963:
1.22 harris41 5964: $SIG{'QUIT'}=\&catchexception;
5965: $SIG{__DIE__}=\&catchexception;
5966:
1.81 matthew 5967: # ---------------------------------- Read loncapa_apache.conf and loncapa.conf
1.95 harris41 5968: &status("Read loncapa.conf and loncapa_apache.conf");
5969: my $perlvarref=LONCAPA::Configuration::read_conf('loncapa.conf');
1.141 foxr 5970: %perlvar=%{$perlvarref};
1.80 harris41 5971: undef $perlvarref;
1.19 www 5972:
1.35 harris41 5973: # ----------------------------- Make sure this process is running from user=www
5974: my $wwwid=getpwnam('www');
5975: if ($wwwid!=$<) {
1.134 albertel 5976: my $emailto="$perlvar{'lonAdmEMail'},$perlvar{'lonSysEMail'}";
5977: my $subj="LON: $currenthostid User ID mismatch";
1.37 harris41 5978: system("echo 'User ID mismatch. lond must be run as user www.' |\
1.35 harris41 5979: mailto $emailto -s '$subj' > /dev/null");
5980: exit 1;
5981: }
5982:
1.19 www 5983: # --------------------------------------------- Check if other instance running
5984:
5985: my $pidfile="$perlvar{'lonDaemons'}/logs/lond.pid";
5986:
5987: if (-e $pidfile) {
5988: my $lfh=IO::File->new("$pidfile");
5989: my $pide=<$lfh>;
5990: chomp($pide);
1.29 harris41 5991: if (kill 0 => $pide) { die "already running"; }
1.19 www 5992: }
1.1 albertel 5993:
5994: # ------------------------------------------------------------- Read hosts file
5995:
5996:
5997:
5998: # establish SERVER socket, bind and listen.
5999: $server = IO::Socket::INET->new(LocalPort => $perlvar{'londPort'},
6000: Type => SOCK_STREAM,
6001: Proto => 'tcp',
1.467.2.2! raeburn 6002: ReuseAddr => 1,
1.1 albertel 6003: Listen => 10 )
1.29 harris41 6004: or die "making socket: $@\n";
1.1 albertel 6005:
6006: # --------------------------------------------------------- Do global variables
6007:
6008: # global variables
6009:
1.134 albertel 6010: my %children = (); # keys are current child process IDs
1.1 albertel 6011:
6012: sub REAPER { # takes care of dead children
6013: $SIG{CHLD} = \&REAPER;
1.165 albertel 6014: &status("Handling child death");
1.178 foxr 6015: my $pid;
6016: do {
6017: $pid = waitpid(-1,&WNOHANG());
6018: if (defined($children{$pid})) {
6019: &logthis("Child $pid died");
6020: delete($children{$pid});
1.183 albertel 6021: } elsif ($pid > 0) {
1.178 foxr 6022: &logthis("Unknown Child $pid died");
6023: }
6024: } while ( $pid > 0 );
6025: foreach my $child (keys(%children)) {
6026: $pid = waitpid($child,&WNOHANG());
6027: if ($pid > 0) {
6028: &logthis("Child $child - $pid looks like we missed it's death");
6029: delete($children{$pid});
6030: }
1.176 albertel 6031: }
1.165 albertel 6032: &status("Finished Handling child death");
1.1 albertel 6033: }
6034:
6035: sub HUNTSMAN { # signal handler for SIGINT
1.165 albertel 6036: &status("Killing children (INT)");
1.1 albertel 6037: local($SIG{CHLD}) = 'IGNORE'; # we're going to kill our children
6038: kill 'INT' => keys %children;
1.59 www 6039: &logthis("Free socket: ".shutdown($server,2)); # free up socket
1.1 albertel 6040: my $execdir=$perlvar{'lonDaemons'};
6041: unlink("$execdir/logs/lond.pid");
1.190 albertel 6042: &logthis("<font color='red'>CRITICAL: Shutting down</font>");
1.165 albertel 6043: &status("Done killing children");
1.1 albertel 6044: exit; # clean up with dignity
6045: }
6046:
6047: sub HUPSMAN { # signal handler for SIGHUP
6048: local($SIG{CHLD}) = 'IGNORE'; # we're going to kill our children
1.165 albertel 6049: &status("Killing children for restart (HUP)");
1.1 albertel 6050: kill 'INT' => keys %children;
1.59 www 6051: &logthis("Free socket: ".shutdown($server,2)); # free up socket
1.190 albertel 6052: &logthis("<font color='red'>CRITICAL: Restarting</font>");
1.134 albertel 6053: my $execdir=$perlvar{'lonDaemons'};
1.30 harris41 6054: unlink("$execdir/logs/lond.pid");
1.165 albertel 6055: &status("Restarting self (HUP)");
1.1 albertel 6056: exec("$execdir/lond"); # here we go again
6057: }
6058:
1.144 foxr 6059: #
1.148 foxr 6060: # Reload the Apache daemon's state.
1.150 foxr 6061: # This is done by invoking /home/httpd/perl/apachereload
6062: # a setuid perl script that can be root for us to do this job.
1.148 foxr 6063: #
6064: sub ReloadApache {
1.150 foxr 6065: my $execdir = $perlvar{'lonDaemons'};
6066: my $script = $execdir."/apachereload";
6067: system($script);
1.148 foxr 6068: }
6069:
6070: #
1.144 foxr 6071: # Called in response to a USR2 signal.
6072: # - Reread hosts.tab
6073: # - All children connected to hosts that were removed from hosts.tab
6074: # are killed via SIGINT
6075: # - All children connected to previously existing hosts are sent SIGUSR1
6076: # - Our internal hosts hash is updated to reflect the new contents of
6077: # hosts.tab causing connections from hosts added to hosts.tab to
6078: # now be honored.
6079: #
6080: sub UpdateHosts {
1.165 albertel 6081: &status("Reload hosts.tab");
1.147 foxr 6082: logthis('<font color="blue"> Updating connections </font>');
1.148 foxr 6083: #
6084: # The %children hash has the set of IP's we currently have children
6085: # on. These need to be matched against records in the hosts.tab
6086: # Any ip's no longer in the table get killed off they correspond to
6087: # either dropped or changed hosts. Note that the re-read of the table
6088: # will take care of new and changed hosts as connections come into being.
6089:
1.371 albertel 6090: &Apache::lonnet::reset_hosts_info();
1.148 foxr 6091:
1.368 albertel 6092: foreach my $child (keys(%children)) {
1.148 foxr 6093: my $childip = $children{$child};
1.374 albertel 6094: if ($childip ne '127.0.0.1'
6095: && !defined(&Apache::lonnet::get_hosts_from_ip($childip))) {
1.149 foxr 6096: logthis('<font color="blue"> UpdateHosts killing child '
6097: ." $child for ip $childip </font>");
1.148 foxr 6098: kill('INT', $child);
1.149 foxr 6099: } else {
6100: logthis('<font color="green"> keeping child for ip '
6101: ." $childip (pid=$child) </font>");
1.148 foxr 6102: }
6103: }
6104: ReloadApache;
1.165 albertel 6105: &status("Finished reloading hosts.tab");
1.144 foxr 6106: }
6107:
1.148 foxr 6108:
1.57 www 6109: sub checkchildren {
1.165 albertel 6110: &status("Checking on the children (sending signals)");
1.57 www 6111: &initnewstatus();
6112: &logstatus();
6113: &logthis('Going to check on the children');
1.134 albertel 6114: my $docdir=$perlvar{'lonDocRoot'};
1.61 harris41 6115: foreach (sort keys %children) {
1.221 albertel 6116: #sleep 1;
1.57 www 6117: unless (kill 'USR1' => $_) {
6118: &logthis ('Child '.$_.' is dead');
6119: &logstatus($$.' is dead');
1.221 albertel 6120: delete($children{$_});
1.57 www 6121: }
1.61 harris41 6122: }
1.63 www 6123: sleep 5;
1.212 foxr 6124: $SIG{ALRM} = sub { Debug("timeout");
6125: die "timeout"; };
1.113 albertel 6126: $SIG{__DIE__} = 'DEFAULT';
1.165 albertel 6127: &status("Checking on the children (waiting for reports)");
1.63 www 6128: foreach (sort keys %children) {
6129: unless (-e "$docdir/lon-status/londchld/$_.txt") {
1.113 albertel 6130: eval {
6131: alarm(300);
1.63 www 6132: &logthis('Child '.$_.' did not respond');
1.67 albertel 6133: kill 9 => $_;
1.131 albertel 6134: #$emailto="$perlvar{'lonAdmEMail'},$perlvar{'lonSysEMail'}";
6135: #$subj="LON: $currenthostid killed lond process $_";
6136: #my $result=`echo 'Killed lond process $_.' | mailto $emailto -s '$subj' > /dev/null`;
6137: #$execdir=$perlvar{'lonDaemons'};
6138: #$result=`/bin/cp $execdir/logs/lond.log $execdir/logs/lond.log.$_`;
1.221 albertel 6139: delete($children{$_});
1.113 albertel 6140: alarm(0);
6141: }
1.63 www 6142: }
6143: }
1.113 albertel 6144: $SIG{ALRM} = 'DEFAULT';
1.155 albertel 6145: $SIG{__DIE__} = \&catchexception;
1.165 albertel 6146: &status("Finished checking children");
1.221 albertel 6147: &logthis('Finished Checking children');
1.57 www 6148: }
6149:
1.1 albertel 6150: # --------------------------------------------------------------------- Logging
6151:
6152: sub logthis {
6153: my $message=shift;
6154: my $execdir=$perlvar{'lonDaemons'};
6155: my $fh=IO::File->new(">>$execdir/logs/lond.log");
6156: my $now=time;
6157: my $local=localtime($now);
1.58 www 6158: $lastlog=$local.': '.$message;
1.1 albertel 6159: print $fh "$local ($$): $message\n";
6160: }
6161:
1.77 foxr 6162: # ------------------------- Conditional log if $DEBUG true.
6163: sub Debug {
6164: my $message = shift;
6165: if($DEBUG) {
6166: &logthis($message);
6167: }
6168: }
1.161 foxr 6169:
6170: #
6171: # Sub to do replies to client.. this gives a hook for some
6172: # debug tracing too:
6173: # Parameters:
6174: # fd - File open on client.
6175: # reply - Text to send to client.
6176: # request - Original request from client.
6177: #
6178: sub Reply {
1.192 foxr 6179: my ($fd, $reply, $request) = @_;
1.387 albertel 6180: if (ref($reply)) {
6181: print $fd $$reply;
6182: print $fd "\n";
6183: if ($DEBUG) { Debug("Request was $request Reply was $$reply"); }
6184: } else {
6185: print $fd $reply;
6186: if ($DEBUG) { Debug("Request was $request Reply was $reply"); }
6187: }
1.212 foxr 6188: $Transactions++;
6189: }
6190:
6191:
6192: #
6193: # Sub to report a failure.
6194: # This function:
6195: # - Increments the failure statistic counters.
6196: # - Invokes Reply to send the error message to the client.
6197: # Parameters:
6198: # fd - File descriptor open on the client
6199: # reply - Reply text to emit.
6200: # request - The original request message (used by Reply
6201: # to debug if that's enabled.
6202: # Implicit outputs:
6203: # $Failures- The number of failures is incremented.
6204: # Reply (invoked here) sends a message to the
6205: # client:
6206: #
6207: sub Failure {
6208: my $fd = shift;
6209: my $reply = shift;
6210: my $request = shift;
6211:
6212: $Failures++;
6213: Reply($fd, $reply, $request); # That's simple eh?
1.161 foxr 6214: }
1.57 www 6215: # ------------------------------------------------------------------ Log status
6216:
6217: sub logstatus {
1.178 foxr 6218: &status("Doing logging");
6219: my $docdir=$perlvar{'lonDocRoot'};
6220: {
6221: my $fh=IO::File->new(">$docdir/lon-status/londchld/$$.txt");
1.200 matthew 6222: print $fh $status."\n".$lastlog."\n".time."\n$keymode";
1.178 foxr 6223: $fh->close();
6224: }
1.221 albertel 6225: &status("Finished $$.txt");
6226: {
6227: open(LOG,">>$docdir/lon-status/londstatus.txt");
6228: flock(LOG,LOCK_EX);
6229: print LOG $$."\t".$clientname."\t".$currenthostid."\t"
6230: .$status."\t".$lastlog."\t $keymode\n";
1.275 albertel 6231: flock(LOG,LOCK_UN);
1.221 albertel 6232: close(LOG);
6233: }
1.178 foxr 6234: &status("Finished logging");
1.57 www 6235: }
6236:
6237: sub initnewstatus {
6238: my $docdir=$perlvar{'lonDocRoot'};
6239: my $fh=IO::File->new(">$docdir/lon-status/londstatus.txt");
1.460 foxr 6240: my $now=time();
1.57 www 6241: my $local=localtime($now);
6242: print $fh "LOND status $local - parent $$\n\n";
1.64 www 6243: opendir(DIR,"$docdir/lon-status/londchld");
1.134 albertel 6244: while (my $filename=readdir(DIR)) {
1.64 www 6245: unlink("$docdir/lon-status/londchld/$filename");
6246: }
6247: closedir(DIR);
1.57 www 6248: }
6249:
6250: # -------------------------------------------------------------- Status setting
6251:
6252: sub status {
6253: my $what=shift;
6254: my $now=time;
6255: my $local=localtime($now);
1.178 foxr 6256: $status=$local.': '.$what;
6257: $0='lond: '.$what.' '.$local;
1.57 www 6258: }
1.11 www 6259:
1.13 www 6260: # -------------------------------------------------------------- Talk to lonsql
6261:
1.234 foxr 6262: sub sql_reply {
1.12 harris41 6263: my ($cmd)=@_;
1.234 foxr 6264: my $answer=&sub_sql_reply($cmd);
6265: if ($answer eq 'con_lost') { $answer=&sub_sql_reply($cmd); }
1.12 harris41 6266: return $answer;
6267: }
6268:
1.234 foxr 6269: sub sub_sql_reply {
1.12 harris41 6270: my ($cmd)=@_;
6271: my $unixsock="mysqlsock";
6272: my $peerfile="$perlvar{'lonSockDir'}/$unixsock";
6273: my $sclient=IO::Socket::UNIX->new(Peer =>"$peerfile",
6274: Type => SOCK_STREAM,
6275: Timeout => 10)
6276: or return "con_lost";
1.319 www 6277: print $sclient "$cmd:$currentdomainid\n";
1.12 harris41 6278: my $answer=<$sclient>;
6279: chomp($answer);
6280: if (!$answer) { $answer="con_lost"; }
6281: return $answer;
6282: }
6283:
1.1 albertel 6284: # --------------------------------------- Is this the home server of an author?
1.11 www 6285:
1.1 albertel 6286: sub ishome {
6287: my $author=shift;
6288: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
6289: my ($udom,$uname)=split(/\//,$author);
6290: my $proname=propath($udom,$uname);
6291: if (-e $proname) {
6292: return 'owner';
6293: } else {
6294: return 'not_owner';
6295: }
6296: }
6297:
6298: # ======================================================= Continue main program
6299: # ---------------------------------------------------- Fork once and dissociate
6300:
1.134 albertel 6301: my $fpid=fork;
1.1 albertel 6302: exit if $fpid;
1.29 harris41 6303: die "Couldn't fork: $!" unless defined ($fpid);
1.1 albertel 6304:
1.29 harris41 6305: POSIX::setsid() or die "Can't start new session: $!";
1.1 albertel 6306:
6307: # ------------------------------------------------------- Write our PID on disk
6308:
1.134 albertel 6309: my $execdir=$perlvar{'lonDaemons'};
1.1 albertel 6310: open (PIDSAVE,">$execdir/logs/lond.pid");
6311: print PIDSAVE "$$\n";
6312: close(PIDSAVE);
1.190 albertel 6313: &logthis("<font color='red'>CRITICAL: ---------- Starting ----------</font>");
1.57 www 6314: &status('Starting');
1.1 albertel 6315:
1.106 foxr 6316:
1.1 albertel 6317:
6318: # ----------------------------------------------------- Install signal handlers
6319:
1.57 www 6320:
1.1 albertel 6321: $SIG{CHLD} = \&REAPER;
6322: $SIG{INT} = $SIG{TERM} = \&HUNTSMAN;
6323: $SIG{HUP} = \&HUPSMAN;
1.57 www 6324: $SIG{USR1} = \&checkchildren;
1.144 foxr 6325: $SIG{USR2} = \&UpdateHosts;
1.106 foxr 6326:
1.148 foxr 6327: # Read the host hashes:
1.368 albertel 6328: &Apache::lonnet::load_hosts_tab();
1.447 raeburn 6329: my %iphost = &Apache::lonnet::get_iphost(1);
1.106 foxr 6330:
1.286 albertel 6331: my $dist=`$perlvar{'lonDaemons'}/distprobe`;
6332:
1.106 foxr 6333: # --------------------------------------------------------------
6334: # Accept connections. When a connection comes in, it is validated
6335: # and if good, a child process is created to process transactions
6336: # along the connection.
6337:
1.1 albertel 6338: while (1) {
1.165 albertel 6339: &status('Starting accept');
1.106 foxr 6340: $client = $server->accept() or next;
1.165 albertel 6341: &status('Accepted '.$client.' off to spawn');
1.386 albertel 6342: make_new_child($client);
1.165 albertel 6343: &status('Finished spawning');
1.1 albertel 6344: }
6345:
1.212 foxr 6346: sub make_new_child {
6347: my $pid;
6348: # my $cipher; # Now global
6349: my $sigset;
1.178 foxr 6350:
1.212 foxr 6351: $client = shift;
6352: &status('Starting new child '.$client);
6353: &logthis('<font color="green"> Attempting to start child ('.$client.
6354: ")</font>");
6355: # block signal for fork
6356: $sigset = POSIX::SigSet->new(SIGINT);
6357: sigprocmask(SIG_BLOCK, $sigset)
6358: or die "Can't block SIGINT for fork: $!\n";
1.178 foxr 6359:
1.212 foxr 6360: die "fork: $!" unless defined ($pid = fork);
1.178 foxr 6361:
1.212 foxr 6362: $client->sockopt(SO_KEEPALIVE, 1); # Enable monitoring of
6363: # connection liveness.
1.178 foxr 6364:
1.212 foxr 6365: #
6366: # Figure out who we're talking to so we can record the peer in
6367: # the pid hash.
6368: #
6369: my $caller = getpeername($client);
6370: my ($port,$iaddr);
6371: if (defined($caller) && length($caller) > 0) {
6372: ($port,$iaddr)=unpack_sockaddr_in($caller);
6373: } else {
6374: &logthis("Unable to determine who caller was, getpeername returned nothing");
6375: }
6376: if (defined($iaddr)) {
6377: $clientip = inet_ntoa($iaddr);
6378: Debug("Connected with $clientip");
6379: } else {
6380: &logthis("Unable to determine clientip");
6381: $clientip='Unavailable';
6382: }
6383:
6384: if ($pid) {
6385: # Parent records the child's birth and returns.
6386: sigprocmask(SIG_UNBLOCK, $sigset)
6387: or die "Can't unblock SIGINT for fork: $!\n";
6388: $children{$pid} = $clientip;
6389: &status('Started child '.$pid);
1.462 foxr 6390: close($client);
1.212 foxr 6391: return;
6392: } else {
6393: # Child can *not* return from this subroutine.
6394: $SIG{INT} = 'DEFAULT'; # make SIGINT kill us as it did before
6395: $SIG{CHLD} = 'DEFAULT'; #make this default so that pwauth returns
6396: #don't get intercepted
6397: $SIG{USR1}= \&logstatus;
6398: $SIG{ALRM}= \&timeout;
1.467.2.2! raeburn 6399:
! 6400: #
! 6401: # Block sigpipe as it gets thrownon socket disconnect and we want to
! 6402: # deal with that as a read faiure instead.
! 6403: #
! 6404: my $blockset = POSIX::SigSet->new(SIGPIPE);
! 6405: sigprocmask(SIG_BLOCK, $blockset);
! 6406:
1.212 foxr 6407: $lastlog='Forked ';
6408: $status='Forked';
1.178 foxr 6409:
1.212 foxr 6410: # unblock signals
6411: sigprocmask(SIG_UNBLOCK, $sigset)
6412: or die "Can't unblock SIGINT for fork: $!\n";
1.178 foxr 6413:
1.212 foxr 6414: # my $tmpsnum=0; # Now global
6415: #---------------------------------------------------- kerberos 5 initialization
6416: &Authen::Krb5::init_context();
1.359 raeburn 6417: unless (($dist eq 'fedora5') || ($dist eq 'fedora4') ||
6418: ($dist eq 'fedora6') || ($dist eq 'suse9.3')) {
1.286 albertel 6419: &Authen::Krb5::init_ets();
6420: }
1.209 albertel 6421:
1.212 foxr 6422: &status('Accepted connection');
6423: # =============================================================================
6424: # do something with the connection
6425: # -----------------------------------------------------------------------------
6426: # see if we know client and 'check' for spoof IP by ineffective challenge
1.178 foxr 6427:
1.278 albertel 6428: my $outsideip=$clientip;
6429: if ($clientip eq '127.0.0.1') {
1.368 albertel 6430: $outsideip=&Apache::lonnet::get_host_ip($perlvar{'lonHostID'});
1.278 albertel 6431: }
1.412 foxr 6432: &ReadManagerTable();
1.368 albertel 6433: my $clientrec=defined(&Apache::lonnet::get_hosts_from_ip($outsideip));
1.278 albertel 6434: my $ismanager=($managers{$outsideip} ne undef);
1.432 raeburn 6435: $clientname = "[unknown]";
1.212 foxr 6436: if($clientrec) { # Establish client type.
6437: $ConnectionType = "client";
1.368 albertel 6438: $clientname = (&Apache::lonnet::get_hosts_from_ip($outsideip))[-1];
1.212 foxr 6439: if($ismanager) {
6440: $ConnectionType = "both";
6441: }
6442: } else {
6443: $ConnectionType = "manager";
1.278 albertel 6444: $clientname = $managers{$outsideip};
1.212 foxr 6445: }
6446: my $clientok;
1.178 foxr 6447:
1.212 foxr 6448: if ($clientrec || $ismanager) {
6449: &status("Waiting for init from $clientip $clientname");
6450: &logthis('<font color="yellow">INFO: Connection, '.
6451: $clientip.
6452: " ($clientname) connection type = $ConnectionType </font>" );
6453: &status("Connecting $clientip ($clientname))");
6454: my $remotereq=<$client>;
6455: chomp($remotereq);
6456: Debug("Got init: $remotereq");
1.337 albertel 6457:
1.212 foxr 6458: if ($remotereq =~ /^init/) {
6459: &sethost("sethost:$perlvar{'lonHostID'}");
6460: #
6461: # If the remote is attempting a local init... give that a try:
6462: #
1.432 raeburn 6463: (my $i, my $inittype, $clientversion) = split(/:/, $remotereq);
1.209 albertel 6464:
1.212 foxr 6465: # If the connection type is ssl, but I didn't get my
6466: # certificate files yet, then I'll drop back to
6467: # insecure (if allowed).
6468:
6469: if($inittype eq "ssl") {
6470: my ($ca, $cert) = lonssl::CertificateFile;
6471: my $kfile = lonssl::KeyFile;
6472: if((!$ca) ||
6473: (!$cert) ||
6474: (!$kfile)) {
6475: $inittype = ""; # This forces insecure attempt.
6476: &logthis("<font color=\"blue\"> Certificates not "
6477: ."installed -- trying insecure auth</font>");
1.224 foxr 6478: } else { # SSL certificates are in place so
1.212 foxr 6479: } # Leave the inittype alone.
6480: }
6481:
6482: if($inittype eq "local") {
1.432 raeburn 6483: $clientversion = $perlvar{'lonVersion'};
1.212 foxr 6484: my $key = LocalConnection($client, $remotereq);
6485: if($key) {
6486: Debug("Got local key $key");
6487: $clientok = 1;
6488: my $cipherkey = pack("H32", $key);
6489: $cipher = new IDEA($cipherkey);
6490: print $client "ok:local\n";
1.442 www 6491: &logthis('<font color="green">'
1.212 foxr 6492: . "Successful local authentication </font>");
6493: $keymode = "local"
1.178 foxr 6494: } else {
1.212 foxr 6495: Debug("Failed to get local key");
6496: $clientok = 0;
6497: shutdown($client, 3);
6498: close $client;
1.178 foxr 6499: }
1.212 foxr 6500: } elsif ($inittype eq "ssl") {
6501: my $key = SSLConnection($client);
6502: if ($key) {
6503: $clientok = 1;
6504: my $cipherkey = pack("H32", $key);
6505: $cipher = new IDEA($cipherkey);
6506: &logthis('<font color="green">'
6507: ."Successfull ssl authentication with $clientname </font>");
6508: $keymode = "ssl";
6509:
1.178 foxr 6510: } else {
1.212 foxr 6511: $clientok = 0;
6512: close $client;
1.178 foxr 6513: }
1.212 foxr 6514:
6515: } else {
6516: my $ok = InsecureConnection($client);
6517: if($ok) {
6518: $clientok = 1;
6519: &logthis('<font color="green">'
6520: ."Successful insecure authentication with $clientname </font>");
6521: print $client "ok\n";
6522: $keymode = "insecure";
1.178 foxr 6523: } else {
1.212 foxr 6524: &logthis('<font color="yellow">'
6525: ."Attempted insecure connection disallowed </font>");
6526: close $client;
6527: $clientok = 0;
1.178 foxr 6528:
6529: }
6530: }
1.212 foxr 6531: } else {
6532: &logthis(
6533: "<font color='blue'>WARNING: "
6534: ."$clientip failed to initialize: >$remotereq< </font>");
6535: &status('No init '.$clientip);
6536: }
6537:
6538: } else {
6539: &logthis(
6540: "<font color='blue'>WARNING: Unknown client $clientip</font>");
6541: &status('Hung up on '.$clientip);
6542: }
6543:
6544: if ($clientok) {
6545: # ---------------- New known client connecting, could mean machine online again
1.368 albertel 6546: if (&Apache::lonnet::get_host_ip($currenthostid) ne $clientip
1.367 albertel 6547: && $clientip ne '127.0.0.1') {
1.375 albertel 6548: &Apache::lonnet::reconlonc($clientname);
1.212 foxr 6549: }
6550: &logthis("<font color='green'>Established connection: $clientname</font>");
6551: &status('Will listen to '.$clientname);
6552: # ------------------------------------------------------------ Process requests
6553: my $keep_going = 1;
6554: my $user_input;
1.448 raeburn 6555: my $clienthost = &Apache::lonnet::hostname($clientname);
6556: my $clientserverhomeID = &Apache::lonnet::get_server_homeID($clienthost);
6557: $clienthomedom = &Apache::lonnet::host_domain($clientserverhomeID);
1.212 foxr 6558: while(($user_input = get_request) && $keep_going) {
6559: alarm(120);
6560: Debug("Main: Got $user_input\n");
6561: $keep_going = &process_request($user_input);
1.178 foxr 6562: alarm(0);
1.212 foxr 6563: &status('Listening to '.$clientname." ($keymode)");
1.161 foxr 6564: }
1.212 foxr 6565:
1.59 www 6566: # --------------------------------------------- client unknown or fishy, refuse
1.212 foxr 6567: } else {
1.161 foxr 6568: print $client "refused\n";
6569: $client->close();
1.190 albertel 6570: &logthis("<font color='blue'>WARNING: "
1.161 foxr 6571: ."Rejected client $clientip, closing connection</font>");
6572: }
1.212 foxr 6573: }
1.161 foxr 6574:
1.1 albertel 6575: # =============================================================================
1.161 foxr 6576:
1.190 albertel 6577: &logthis("<font color='red'>CRITICAL: "
1.161 foxr 6578: ."Disconnect from $clientip ($clientname)</font>");
6579:
6580:
6581: # this exit is VERY important, otherwise the child will become
6582: # a producer of more and more children, forking yourself into
6583: # process death.
6584: exit;
1.106 foxr 6585:
1.78 foxr 6586: }
1.261 foxr 6587: #
6588: # Determine if a user is an author for the indicated domain.
6589: #
6590: # Parameters:
6591: # domain - domain to check in .
6592: # user - Name of user to check.
6593: #
6594: # Return:
6595: # 1 - User is an author for domain.
6596: # 0 - User is not an author for domain.
6597: sub is_author {
6598: my ($domain, $user) = @_;
6599:
6600: &Debug("is_author: $user @ $domain");
6601:
6602: my $hashref = &tie_user_hash($domain, $user, "roles",
6603: &GDBM_READER());
6604:
6605: # Author role should show up as a key /domain/_au
1.78 foxr 6606:
1.321 albertel 6607: my $key = "/$domain/_au";
6608: my $value;
6609: if (defined($hashref)) {
6610: $value = $hashref->{$key};
6611: }
1.78 foxr 6612:
1.261 foxr 6613: if(defined($value)) {
6614: &Debug("$user @ $domain is an author");
6615: }
6616:
6617: return defined($value);
6618: }
1.78 foxr 6619: #
6620: # Checks to see if the input roleput request was to set
6621: # an author role. If so, invokes the lchtmldir script to set
6622: # up a correct public_html
6623: # Parameters:
6624: # request - The request sent to the rolesput subchunk.
6625: # We're looking for /domain/_au
6626: # domain - The domain in which the user is having roles doctored.
6627: # user - Name of the user for which the role is being put.
6628: # authtype - The authentication type associated with the user.
6629: #
1.289 albertel 6630: sub manage_permissions {
1.192 foxr 6631: my ($request, $domain, $user, $authtype) = @_;
1.78 foxr 6632:
1.261 foxr 6633: &Debug("manage_permissions: $request $domain $user $authtype");
6634:
1.78 foxr 6635: # See if the request is of the form /$domain/_au
1.289 albertel 6636: if($request =~ /^(\/\Q$domain\E\/_au)$/) { # It's an author rolesput...
1.78 foxr 6637: my $execdir = $perlvar{'lonDaemons'};
6638: my $userhome= "/home/$user" ;
1.134 albertel 6639: &logthis("system $execdir/lchtmldir $userhome $user $authtype");
1.261 foxr 6640: &Debug("Setting homedir permissions for $userhome");
1.78 foxr 6641: system("$execdir/lchtmldir $userhome $user $authtype");
6642: }
6643: }
1.222 foxr 6644:
6645:
6646: #
6647: # Return the full path of a user password file, whether it exists or not.
6648: # Parameters:
6649: # domain - Domain in which the password file lives.
6650: # user - name of the user.
6651: # Returns:
6652: # Full passwd path:
6653: #
6654: sub password_path {
6655: my ($domain, $user) = @_;
1.264 albertel 6656: return &propath($domain, $user).'/passwd';
1.222 foxr 6657: }
6658:
6659: # Password Filename
6660: # Returns the path to a passwd file given domain and user... only if
6661: # it exists.
6662: # Parameters:
6663: # domain - Domain in which to search.
6664: # user - username.
6665: # Returns:
6666: # - If the password file exists returns its path.
6667: # - If the password file does not exist, returns undefined.
6668: #
6669: sub password_filename {
6670: my ($domain, $user) = @_;
6671:
6672: Debug ("PasswordFilename called: dom = $domain user = $user");
6673:
6674: my $path = &password_path($domain, $user);
6675: Debug("PasswordFilename got path: $path");
6676: if(-e $path) {
6677: return $path;
6678: } else {
6679: return undef;
6680: }
6681: }
6682:
6683: #
6684: # Rewrite the contents of the user's passwd file.
6685: # Parameters:
6686: # domain - domain of the user.
6687: # name - User's name.
6688: # contents - New contents of the file.
6689: # Returns:
6690: # 0 - Failed.
6691: # 1 - Success.
6692: #
6693: sub rewrite_password_file {
6694: my ($domain, $user, $contents) = @_;
6695:
6696: my $file = &password_filename($domain, $user);
6697: if (defined $file) {
6698: my $pf = IO::File->new(">$file");
6699: if($pf) {
6700: print $pf "$contents\n";
6701: return 1;
6702: } else {
6703: return 0;
6704: }
6705: } else {
6706: return 0;
6707: }
6708:
6709: }
6710:
1.78 foxr 6711: #
1.222 foxr 6712: # get_auth_type - Determines the authorization type of a user in a domain.
1.78 foxr 6713:
6714: # Returns the authorization type or nouser if there is no such user.
6715: #
1.436 raeburn 6716: sub get_auth_type {
1.192 foxr 6717: my ($domain, $user) = @_;
1.78 foxr 6718:
1.222 foxr 6719: Debug("get_auth_type( $domain, $user ) \n");
1.78 foxr 6720: my $proname = &propath($domain, $user);
6721: my $passwdfile = "$proname/passwd";
6722: if( -e $passwdfile ) {
6723: my $pf = IO::File->new($passwdfile);
6724: my $realpassword = <$pf>;
6725: chomp($realpassword);
1.79 foxr 6726: Debug("Password info = $realpassword\n");
1.78 foxr 6727: my ($authtype, $contentpwd) = split(/:/, $realpassword);
1.79 foxr 6728: Debug("Authtype = $authtype, content = $contentpwd\n");
1.259 raeburn 6729: return "$authtype:$contentpwd";
1.224 foxr 6730: } else {
1.79 foxr 6731: Debug("Returning nouser");
1.78 foxr 6732: return "nouser";
6733: }
1.1 albertel 6734: }
6735:
1.220 foxr 6736: #
6737: # Validate a user given their domain, name and password. This utility
6738: # function is used by both AuthenticateHandler and ChangePasswordHandler
6739: # to validate the login credentials of a user.
6740: # Parameters:
6741: # $domain - The domain being logged into (this is required due to
6742: # the capability for multihomed systems.
6743: # $user - The name of the user being validated.
6744: # $password - The user's propoposed password.
6745: #
6746: # Returns:
6747: # 1 - The domain,user,pasword triplet corresponds to a valid
6748: # user.
6749: # 0 - The domain,user,password triplet is not a valid user.
6750: #
6751: sub validate_user {
1.396 raeburn 6752: my ($domain, $user, $password, $checkdefauth) = @_;
1.220 foxr 6753:
6754: # Why negative ~pi you may well ask? Well this function is about
6755: # authentication, and therefore very important to get right.
6756: # I've initialized the flag that determines whether or not I've
6757: # validated correctly to a value it's not supposed to get.
6758: # At the end of this function. I'll ensure that it's not still that
6759: # value so we don't just wind up returning some accidental value
6760: # as a result of executing an unforseen code path that
1.249 foxr 6761: # did not set $validated. At the end of valid execution paths,
6762: # validated shoule be 1 for success or 0 for failuer.
1.220 foxr 6763:
6764: my $validated = -3.14159;
6765:
6766: # How we authenticate is determined by the type of authentication
6767: # the user has been assigned. If the authentication type is
6768: # "nouser", the user does not exist so we will return 0.
6769:
1.222 foxr 6770: my $contents = &get_auth_type($domain, $user);
1.220 foxr 6771: my ($howpwd, $contentpwd) = split(/:/, $contents);
6772:
6773: my $null = pack("C",0); # Used by kerberos auth types.
6774:
1.395 raeburn 6775: if ($howpwd eq 'nouser') {
1.396 raeburn 6776: if ($checkdefauth) {
6777: my %domdefaults = &Apache::lonnet::get_domain_defaults($domain);
6778: if ($domdefaults{'auth_def'} eq 'localauth') {
6779: $howpwd = $domdefaults{'auth_def'};
6780: $contentpwd = $domdefaults{'auth_arg_def'};
6781: } elsif ((($domdefaults{'auth_def'} eq 'krb4') ||
6782: ($domdefaults{'auth_def'} eq 'krb5')) &&
6783: ($domdefaults{'auth_arg_def'} ne '')) {
6784: $howpwd = $domdefaults{'auth_def'};
6785: $contentpwd = $domdefaults{'auth_arg_def'};
6786: }
1.395 raeburn 6787: }
6788: }
1.220 foxr 6789: if ($howpwd ne 'nouser') {
6790: if($howpwd eq "internal") { # Encrypted is in local password file.
6791: $validated = (crypt($password, $contentpwd) eq $contentpwd);
6792: }
6793: elsif ($howpwd eq "unix") { # User is a normal unix user.
6794: $contentpwd = (getpwnam($user))[1];
6795: if($contentpwd) {
6796: if($contentpwd eq 'x') { # Shadow password file...
6797: my $pwauth_path = "/usr/local/sbin/pwauth";
6798: open PWAUTH, "|$pwauth_path" or
6799: die "Cannot invoke authentication";
6800: print PWAUTH "$user\n$password\n";
6801: close PWAUTH;
6802: $validated = ! $?;
6803:
6804: } else { # Passwords in /etc/passwd.
6805: $validated = (crypt($password,
6806: $contentpwd) eq $contentpwd);
6807: }
6808: } else {
6809: $validated = 0;
6810: }
1.439 raeburn 6811: } elsif ($howpwd eq "krb4") { # user is in kerberos 4 auth. domain.
6812: my $checkwithkrb5 = 0;
6813: if ($dist =~/^fedora(\d+)$/) {
6814: if ($1 > 11) {
6815: $checkwithkrb5 = 1;
6816: }
6817: } elsif ($dist =~ /^suse([\d.]+)$/) {
6818: if ($1 > 11.1) {
6819: $checkwithkrb5 = 1;
6820: }
6821: }
6822: if ($checkwithkrb5) {
6823: $validated = &krb5_authen($password,$null,$user,$contentpwd);
6824: } else {
6825: $validated = &krb4_authen($password,$null,$user,$contentpwd);
6826: }
1.224 foxr 6827: } elsif ($howpwd eq "krb5") { # User is in kerberos 5 auth. domain.
1.439 raeburn 6828: $validated = &krb5_authen($password,$null,$user,$contentpwd);
1.224 foxr 6829: } elsif ($howpwd eq "localauth") {
1.220 foxr 6830: # Authenticate via installation specific authentcation method:
6831: $validated = &localauth::localauth($user,
6832: $password,
1.353 albertel 6833: $contentpwd,
6834: $domain);
1.358 albertel 6835: if ($validated < 0) {
1.357 albertel 6836: &logthis("localauth for $contentpwd $user:$domain returned a $validated");
6837: $validated = 0;
6838: }
1.224 foxr 6839: } else { # Unrecognized auth is also bad.
1.220 foxr 6840: $validated = 0;
6841: }
6842: } else {
6843: $validated = 0;
6844: }
6845: #
6846: # $validated has the correct stat of the authentication:
6847: #
6848:
6849: unless ($validated != -3.14159) {
1.249 foxr 6850: # I >really really< want to know if this happens.
6851: # since it indicates that user authentication is badly
6852: # broken in some code path.
6853: #
6854: die "ValidateUser - failed to set the value of validated $domain, $user $password";
1.220 foxr 6855: }
6856: return $validated;
6857: }
6858:
1.439 raeburn 6859: sub krb4_authen {
6860: my ($password,$null,$user,$contentpwd) = @_;
6861: my $validated = 0;
6862: if (!($password =~ /$null/) ) { # Null password not allowed.
6863: eval {
6864: require Authen::Krb4;
6865: };
6866: if (!$@) {
6867: my $k4error = &Authen::Krb4::get_pw_in_tkt($user,
6868: "",
6869: $contentpwd,,
6870: 'krbtgt',
6871: $contentpwd,
6872: 1,
6873: $password);
6874: if(!$k4error) {
6875: $validated = 1;
6876: } else {
6877: $validated = 0;
6878: &logthis('krb4: '.$user.', '.$contentpwd.', '.
6879: &Authen::Krb4::get_err_txt($Authen::Krb4::error));
6880: }
6881: } else {
6882: $validated = krb5_authen($password,$null,$user,$contentpwd);
6883: }
6884: }
6885: return $validated;
6886: }
6887:
6888: sub krb5_authen {
6889: my ($password,$null,$user,$contentpwd) = @_;
6890: my $validated = 0;
6891: if(!($password =~ /$null/)) { # Null password not allowed.
6892: my $krbclient = &Authen::Krb5::parse_name($user.'@'
6893: .$contentpwd);
6894: my $krbservice = "krbtgt/".$contentpwd."\@".$contentpwd;
6895: my $krbserver = &Authen::Krb5::parse_name($krbservice);
6896: my $credentials= &Authen::Krb5::cc_default();
6897: $credentials->initialize(&Authen::Krb5::parse_name($user.'@'
6898: .$contentpwd));
6899: my $krbreturn;
6900: if (exists(&Authen::Krb5::get_init_creds_password)) {
6901: $krbreturn =
6902: &Authen::Krb5::get_init_creds_password($krbclient,$password,
6903: $krbservice);
6904: $validated = (ref($krbreturn) eq 'Authen::Krb5::Creds');
6905: } else {
6906: $krbreturn =
6907: &Authen::Krb5::get_in_tkt_with_password($krbclient,$krbserver,
6908: $password,$credentials);
6909: $validated = ($krbreturn == 1);
6910: }
6911: if (!$validated) {
6912: &logthis('krb5: '.$user.', '.$contentpwd.', '.
6913: &Authen::Krb5::error());
6914: }
6915: }
6916: return $validated;
6917: }
1.220 foxr 6918:
1.84 albertel 6919: sub addline {
6920: my ($fname,$hostid,$ip,$newline)=@_;
6921: my $contents;
6922: my $found=0;
1.355 albertel 6923: my $expr='^'.quotemeta($hostid).':'.quotemeta($ip).':';
1.134 albertel 6924: my $sh;
1.84 albertel 6925: if ($sh=IO::File->new("$fname.subscription")) {
6926: while (my $subline=<$sh>) {
6927: if ($subline !~ /$expr/) {$contents.= $subline;} else {$found=1;}
6928: }
6929: $sh->close();
6930: }
6931: $sh=IO::File->new(">$fname.subscription");
6932: if ($contents) { print $sh $contents; }
6933: if ($newline) { print $sh $newline; }
6934: $sh->close();
6935: return $found;
1.86 www 6936: }
6937:
1.234 foxr 6938: sub get_chat {
1.324 raeburn 6939: my ($cdom,$cname,$udom,$uname,$group)=@_;
1.310 albertel 6940:
1.87 www 6941: my @entries=();
1.324 raeburn 6942: my $namespace = 'nohist_chatroom';
6943: my $namespace_inroom = 'nohist_inchatroom';
1.335 albertel 6944: if ($group ne '') {
1.324 raeburn 6945: $namespace .= '_'.$group;
6946: $namespace_inroom .= '_'.$group;
6947: }
6948: my $hashref = &tie_user_hash($cdom, $cname, $namespace,
1.310 albertel 6949: &GDBM_READER());
6950: if ($hashref) {
6951: @entries=map { $_.':'.$hashref->{$_} } sort(keys(%$hashref));
1.311 albertel 6952: &untie_user_hash($hashref);
1.123 www 6953: }
1.124 www 6954: my @participants=();
1.134 albertel 6955: my $cutoff=time-60;
1.324 raeburn 6956: $hashref = &tie_user_hash($cdom, $cname, $namespace_inroom,
1.310 albertel 6957: &GDBM_WRCREAT());
6958: if ($hashref) {
6959: $hashref->{$uname.':'.$udom}=time;
6960: foreach my $user (sort(keys(%$hashref))) {
6961: if ($hashref->{$user}>$cutoff) {
6962: push(@participants, 'active_participant:'.$user);
1.123 www 6963: }
6964: }
1.311 albertel 6965: &untie_user_hash($hashref);
1.86 www 6966: }
1.124 www 6967: return (@participants,@entries);
1.86 www 6968: }
6969:
1.234 foxr 6970: sub chat_add {
1.324 raeburn 6971: my ($cdom,$cname,$newchat,$group)=@_;
1.88 albertel 6972: my @entries=();
1.142 www 6973: my $time=time;
1.324 raeburn 6974: my $namespace = 'nohist_chatroom';
6975: my $logfile = 'chatroom.log';
1.335 albertel 6976: if ($group ne '') {
1.324 raeburn 6977: $namespace .= '_'.$group;
6978: $logfile = 'chatroom_'.$group.'.log';
6979: }
6980: my $hashref = &tie_user_hash($cdom, $cname, $namespace,
1.310 albertel 6981: &GDBM_WRCREAT());
6982: if ($hashref) {
6983: @entries=map { $_.':'.$hashref->{$_} } sort(keys(%$hashref));
1.88 albertel 6984: my ($lastid)=($entries[$#entries]=~/^(\w+)\:/);
6985: my ($thentime,$idnum)=split(/\_/,$lastid);
6986: my $newid=$time.'_000000';
6987: if ($thentime==$time) {
6988: $idnum=~s/^0+//;
6989: $idnum++;
6990: $idnum=substr('000000'.$idnum,-6,6);
6991: $newid=$time.'_'.$idnum;
6992: }
1.310 albertel 6993: $hashref->{$newid}=$newchat;
1.88 albertel 6994: my $expired=$time-3600;
1.310 albertel 6995: foreach my $comment (keys(%$hashref)) {
6996: my ($thistime) = ($comment=~/(\d+)\_/);
1.88 albertel 6997: if ($thistime<$expired) {
1.310 albertel 6998: delete $hashref->{$comment};
1.88 albertel 6999: }
7000: }
1.310 albertel 7001: {
7002: my $proname=&propath($cdom,$cname);
1.324 raeburn 7003: if (open(CHATLOG,">>$proname/$logfile")) {
1.310 albertel 7004: print CHATLOG ("$time:".&unescape($newchat)."\n");
7005: }
7006: close(CHATLOG);
1.142 www 7007: }
1.311 albertel 7008: &untie_user_hash($hashref);
1.86 www 7009: }
1.84 albertel 7010: }
7011:
7012: sub unsub {
7013: my ($fname,$clientip)=@_;
7014: my $result;
1.188 foxr 7015: my $unsubs = 0; # Number of successful unsubscribes:
7016:
7017:
7018: # An old way subscriptions were handled was to have a
7019: # subscription marker file:
7020:
7021: Debug("Attempting unlink of $fname.$clientname");
1.161 foxr 7022: if (unlink("$fname.$clientname")) {
1.188 foxr 7023: $unsubs++; # Successful unsub via marker file.
7024: }
7025:
7026: # The more modern way to do it is to have a subscription list
7027: # file:
7028:
1.84 albertel 7029: if (-e "$fname.subscription") {
1.161 foxr 7030: my $found=&addline($fname,$clientname,$clientip,'');
1.188 foxr 7031: if ($found) {
7032: $unsubs++;
7033: }
7034: }
7035:
7036: # If either or both of these mechanisms succeeded in unsubscribing a
7037: # resource we can return ok:
7038:
7039: if($unsubs) {
7040: $result = "ok\n";
1.84 albertel 7041: } else {
1.188 foxr 7042: $result = "not_subscribed\n";
1.84 albertel 7043: }
1.188 foxr 7044:
1.84 albertel 7045: return $result;
7046: }
7047:
1.101 www 7048: sub currentversion {
7049: my $fname=shift;
7050: my $version=-1;
7051: my $ulsdir='';
7052: if ($fname=~/^(.+)\/[^\/]+$/) {
7053: $ulsdir=$1;
7054: }
1.114 albertel 7055: my ($fnamere1,$fnamere2);
7056: # remove version if already specified
1.101 www 7057: $fname=~s/\.\d+\.(\w+(?:\.meta)*)$/\.$1/;
1.114 albertel 7058: # get the bits that go before and after the version number
7059: if ( $fname=~/^(.*\.)(\w+(?:\.meta)*)$/ ) {
7060: $fnamere1=$1;
7061: $fnamere2='.'.$2;
7062: }
1.101 www 7063: if (-e $fname) { $version=1; }
7064: if (-e $ulsdir) {
1.134 albertel 7065: if(-d $ulsdir) {
7066: if (opendir(LSDIR,$ulsdir)) {
7067: my $ulsfn;
7068: while ($ulsfn=readdir(LSDIR)) {
1.101 www 7069: # see if this is a regular file (ignore links produced earlier)
1.134 albertel 7070: my $thisfile=$ulsdir.'/'.$ulsfn;
7071: unless (-l $thisfile) {
1.160 www 7072: if ($thisfile=~/\Q$fnamere1\E(\d+)\Q$fnamere2\E$/) {
1.134 albertel 7073: if ($1>$version) { $version=$1; }
7074: }
7075: }
7076: }
7077: closedir(LSDIR);
7078: $version++;
7079: }
7080: }
7081: }
7082: return $version;
1.101 www 7083: }
7084:
7085: sub thisversion {
7086: my $fname=shift;
7087: my $version=-1;
7088: if ($fname=~/\.(\d+)\.\w+(?:\.meta)*$/) {
7089: $version=$1;
7090: }
7091: return $version;
7092: }
7093:
1.84 albertel 7094: sub subscribe {
7095: my ($userinput,$clientip)=@_;
7096: my $result;
1.293 albertel 7097: my ($cmd,$fname)=split(/:/,$userinput,2);
1.84 albertel 7098: my $ownership=&ishome($fname);
7099: if ($ownership eq 'owner') {
1.101 www 7100: # explitly asking for the current version?
7101: unless (-e $fname) {
7102: my $currentversion=¤tversion($fname);
7103: if (&thisversion($fname)==$currentversion) {
7104: if ($fname=~/^(.+)\.\d+\.(\w+(?:\.meta)*)$/) {
7105: my $root=$1;
7106: my $extension=$2;
7107: symlink($root.'.'.$extension,
7108: $root.'.'.$currentversion.'.'.$extension);
1.102 www 7109: unless ($extension=~/\.meta$/) {
7110: symlink($root.'.'.$extension.'.meta',
7111: $root.'.'.$currentversion.'.'.$extension.'.meta');
7112: }
1.101 www 7113: }
7114: }
7115: }
1.84 albertel 7116: if (-e $fname) {
7117: if (-d $fname) {
7118: $result="directory\n";
7119: } else {
1.161 foxr 7120: if (-e "$fname.$clientname") {&unsub($fname,$clientip);}
1.134 albertel 7121: my $now=time;
1.161 foxr 7122: my $found=&addline($fname,$clientname,$clientip,
7123: "$clientname:$clientip:$now\n");
1.84 albertel 7124: if ($found) { $result="$fname\n"; }
7125: # if they were subscribed to only meta data, delete that
7126: # subscription, when you subscribe to a file you also get
7127: # the metadata
7128: unless ($fname=~/\.meta$/) { &unsub("$fname.meta",$clientip); }
7129: $fname=~s/\/home\/httpd\/html\/res/raw/;
1.373 albertel 7130: $fname="http://".&Apache::lonnet::hostname($perlvar{'lonHostID'})."/".$fname;
1.84 albertel 7131: $result="$fname\n";
7132: }
7133: } else {
7134: $result="not_found\n";
7135: }
7136: } else {
7137: $result="rejected\n";
7138: }
7139: return $result;
7140: }
1.287 foxr 7141: # Change the passwd of a unix user. The caller must have
7142: # first verified that the user is a loncapa user.
7143: #
7144: # Parameters:
7145: # user - Unix user name to change.
7146: # pass - New password for the user.
7147: # Returns:
7148: # ok - if success
7149: # other - Some meaningfule error message string.
7150: # NOTE:
7151: # invokes a setuid script to change the passwd.
7152: sub change_unix_password {
7153: my ($user, $pass) = @_;
7154:
7155: &Debug("change_unix_password");
7156: my $execdir=$perlvar{'lonDaemons'};
7157: &Debug("Opening lcpasswd pipeline");
7158: my $pf = IO::File->new("|$execdir/lcpasswd > "
7159: ."$perlvar{'lonDaemons'}"
7160: ."/logs/lcpasswd.log");
7161: print $pf "$user\n$pass\n$pass\n";
7162: close $pf;
7163: my $err = $?;
7164: return ($err < @passwderrors) ? $passwderrors[$err] :
7165: "pwchange_falure - unknown error";
7166:
7167:
7168: }
7169:
1.91 albertel 7170:
7171: sub make_passwd_file {
1.98 foxr 7172: my ($uname, $umode,$npass,$passfilename)=@_;
1.390 raeburn 7173: my $result="ok";
1.91 albertel 7174: if ($umode eq 'krb4' or $umode eq 'krb5') {
7175: {
7176: my $pf = IO::File->new(">$passfilename");
1.261 foxr 7177: if ($pf) {
7178: print $pf "$umode:$npass\n";
7179: } else {
7180: $result = "pass_file_failed_error";
7181: }
1.91 albertel 7182: }
7183: } elsif ($umode eq 'internal') {
7184: my $salt=time;
7185: $salt=substr($salt,6,2);
7186: my $ncpass=crypt($npass,$salt);
7187: {
7188: &Debug("Creating internal auth");
7189: my $pf = IO::File->new(">$passfilename");
1.261 foxr 7190: if($pf) {
7191: print $pf "internal:$ncpass\n";
7192: } else {
7193: $result = "pass_file_failed_error";
7194: }
1.91 albertel 7195: }
7196: } elsif ($umode eq 'localauth') {
7197: {
7198: my $pf = IO::File->new(">$passfilename");
1.261 foxr 7199: if($pf) {
7200: print $pf "localauth:$npass\n";
7201: } else {
7202: $result = "pass_file_failed_error";
7203: }
1.91 albertel 7204: }
7205: } elsif ($umode eq 'unix') {
7206: {
1.186 foxr 7207: #
7208: # Don't allow the creation of privileged accounts!!! that would
7209: # be real bad!!!
7210: #
7211: my $uid = getpwnam($uname);
7212: if((defined $uid) && ($uid == 0)) {
7213: &logthis(">>>Attempted to create privilged account blocked");
7214: return "no_priv_account_error\n";
7215: }
7216:
1.223 foxr 7217: my $execpath ="$perlvar{'lonDaemons'}/"."lcuseradd";
1.224 foxr 7218:
7219: my $lc_error_file = $execdir."/tmp/lcuseradd".$$.".status";
1.91 albertel 7220: {
7221: &Debug("Executing external: ".$execpath);
1.98 foxr 7222: &Debug("user = ".$uname.", Password =". $npass);
1.132 matthew 7223: my $se = IO::File->new("|$execpath > $perlvar{'lonDaemons'}/logs/lcuseradd.log");
1.91 albertel 7224: print $se "$uname\n";
7225: print $se "$npass\n";
7226: print $se "$npass\n";
1.223 foxr 7227: print $se "$lc_error_file\n"; # Status -> unique file.
1.97 foxr 7228: }
1.285 foxr 7229: if (-r $lc_error_file) {
7230: &Debug("Opening error file: $lc_error_file");
7231: my $error = IO::File->new("< $lc_error_file");
7232: my $useraddok = <$error>;
7233: $error->close;
7234: unlink($lc_error_file);
7235:
7236: chomp $useraddok;
7237:
7238: if($useraddok > 0) {
7239: my $error_text = &lcuseraddstrerror($useraddok);
7240: &logthis("Failed lcuseradd: $error_text");
1.390 raeburn 7241: $result = "lcuseradd_failed:$error_text";
1.285 foxr 7242: } else {
7243: my $pf = IO::File->new(">$passfilename");
7244: if($pf) {
7245: print $pf "unix:\n";
7246: } else {
7247: $result = "pass_file_failed_error";
7248: }
7249: }
1.224 foxr 7250: } else {
1.285 foxr 7251: &Debug("Could not locate lcuseradd error: $lc_error_file");
7252: $result="bug_lcuseradd_no_output_file";
1.91 albertel 7253: }
7254: }
7255: } elsif ($umode eq 'none') {
7256: {
1.223 foxr 7257: my $pf = IO::File->new("> $passfilename");
1.261 foxr 7258: if($pf) {
7259: print $pf "none:\n";
7260: } else {
7261: $result = "pass_file_failed_error";
7262: }
1.91 albertel 7263: }
7264: } else {
1.390 raeburn 7265: $result="auth_mode_error";
1.91 albertel 7266: }
7267: return $result;
1.121 albertel 7268: }
7269:
1.265 albertel 7270: sub convert_photo {
7271: my ($start,$dest)=@_;
7272: system("convert $start $dest");
7273: }
7274:
1.121 albertel 7275: sub sethost {
7276: my ($remotereq) = @_;
7277: my (undef,$hostid)=split(/:/,$remotereq);
1.322 albertel 7278: # ignore sethost if we are already correct
7279: if ($hostid eq $currenthostid) {
7280: return 'ok';
7281: }
7282:
1.121 albertel 7283: if (!defined($hostid)) { $hostid=$perlvar{'lonHostID'}; }
1.368 albertel 7284: if (&Apache::lonnet::get_host_ip($perlvar{'lonHostID'})
7285: eq &Apache::lonnet::get_host_ip($hostid)) {
1.200 matthew 7286: $currenthostid =$hostid;
1.369 albertel 7287: $currentdomainid=&Apache::lonnet::host_domain($hostid);
1.443 www 7288: # &logthis("Setting hostid to $hostid, and domain to $currentdomainid");
1.121 albertel 7289: } else {
7290: &logthis("Requested host id $hostid not an alias of ".
7291: $perlvar{'lonHostID'}." refusing connection");
7292: return 'unable_to_set';
7293: }
7294: return 'ok';
7295: }
7296:
7297: sub version {
7298: my ($userinput)=@_;
7299: $remoteVERSION=(split(/:/,$userinput))[1];
7300: return "version:$VERSION";
1.127 albertel 7301: }
1.178 foxr 7302:
1.447 raeburn 7303: sub get_usersession_config {
7304: my ($dom,$name) = @_;
7305: my ($usersessionconf,$cached)=&Apache::lonnet::is_cached_new($name,$dom);
7306: if (defined($cached)) {
7307: return $usersessionconf;
7308: } else {
7309: my %domconfig = &Apache::lonnet::get_dom('configuration',['usersessions'],$dom);
7310: if (ref($domconfig{'usersessions'}) eq 'HASH') {
7311: &Apache::lonnet::do_cache_new($name,$dom,$domconfig{'usersessions'},3600);
7312: return $domconfig{'usersessions'};
7313: }
7314: }
7315: return;
7316: }
1.200 matthew 7317:
1.453 raeburn 7318: sub releasereqd_check {
1.457 raeburn 7319: my ($cnum,$cdom,$key,$value,$major,$minor,$homecourses,$ids) = @_;
1.453 raeburn 7320: my $home = &Apache::lonnet::homeserver($cnum,$cdom);
7321: return if ($home eq 'no_host');
7322: my ($reqdmajor,$reqdminor,$displayrole);
7323: if ($cnum =~ /$LONCAPA::match_community/) {
7324: if ($major eq '' && $minor eq '') {
7325: return unless ((ref($ids) eq 'ARRAY') &&
7326: (grep(/^\Q$home\E$/,@{$ids})));
7327: } else {
7328: $reqdmajor = 2;
7329: $reqdminor = 9;
7330: return unless (&useable_role($reqdmajor,$reqdminor,$major,$minor));
7331: }
7332: }
1.457 raeburn 7333: my $hashid = $cdom.':'.$cnum;
7334: my ($courseinfo,$cached) =
7335: &Apache::lonnet::is_cached_new('courseinfo',$hashid);
7336: if (defined($cached)) {
7337: if (ref($courseinfo) eq 'HASH') {
7338: if (exists($courseinfo->{'releaserequired'})) {
7339: my ($reqdmajor,$reqdminor) = split(/\./,$courseinfo->{'releaserequired'});
7340: return unless (&useable_role($reqdmajor,$reqdminor,$major,$minor));
1.453 raeburn 7341: }
1.457 raeburn 7342: }
7343: } else {
7344: if (ref($ids) eq 'ARRAY') {
7345: if (grep(/^\Q$home\E$/,@{$ids})) {
7346: if (ref($homecourses) eq 'HASH') {
7347: if (ref($homecourses->{$hashid}) eq 'ARRAY') {
7348: push(@{$homecourses->{$hashid}},{$key=>$value});
7349: } else {
7350: $homecourses->{$hashid} = [{$key=>$value}];
1.453 raeburn 7351: }
7352: }
1.457 raeburn 7353: return;
1.453 raeburn 7354: }
1.457 raeburn 7355: }
7356: my $courseinfo = &get_courseinfo_hash($cnum,$cdom,$home);
7357: if (ref($courseinfo) eq 'HASH') {
7358: if (exists($courseinfo->{'releaserequired'})) {
7359: my ($reqdmajor,$reqdminor) = split(/\./,$courseinfo->{'releaserequired'});
7360: return unless (&useable_role($reqdmajor,$reqdminor,$major,$minor));
1.453 raeburn 7361: }
1.466 raeburn 7362: } else {
7363: return;
1.453 raeburn 7364: }
7365: }
7366: return 1;
7367: }
7368:
1.450 raeburn 7369: sub get_courseinfo_hash {
7370: my ($cnum,$cdom,$home) = @_;
1.466 raeburn 7371: my %info;
7372: eval {
7373: local($SIG{ALRM}) = sub { die "timeout\n"; };
7374: local($SIG{__DIE__})='DEFAULT';
7375: alarm(3);
7376: %info = &Apache::lonnet::courseiddump($cdom,'.',1,'.','.',$cnum,1,[$home],'.');
7377: alarm(0);
7378: };
7379: if ($@) {
7380: if ($@ eq "timeout\n") {
7381: &logthis("<font color='blue'>WARNING courseiddump for $cnum:$cdom from $home timedout</font>");
7382: } else {
7383: &logthis("<font color='yellow'>WARNING unexpected error during eval of call for courseiddump from $home</font>");
7384: }
7385: } else {
7386: if (ref($info{$cdom.'_'.$cnum}) eq 'HASH') {
7387: my $hashid = $cdom.':'.$cnum;
7388: return &Apache::lonnet::do_cache_new('courseinfo',$hashid,$info{$cdom.'_'.$cnum},600);
7389: }
1.453 raeburn 7390: }
7391: return;
7392: }
7393:
7394: sub check_homecourses {
7395: my ($homecourses,$udom,$regexp,$count,$range,$start,$end,$major,$minor) = @_;
7396: my ($result,%addtocache);
1.459 raeburn 7397: my $yesterday = time - 24*3600;
1.453 raeburn 7398: if (ref($homecourses) eq 'HASH') {
1.459 raeburn 7399: my (%okcourses,%courseinfo,%recent);
1.453 raeburn 7400: my $hashref = &tie_domain_hash($udom, "nohist_courseids", &GDBM_WRCREAT());
7401: if ($hashref) {
7402: while (my ($key,$value) = each(%$hashref)) {
7403: my $unesc_key = &unescape($key);
1.459 raeburn 7404: if ($unesc_key =~ /^lasttime:(\w+)$/) {
7405: my $cid = $1;
7406: $cid =~ s/_/:/;
7407: if ($value > $yesterday ) {
7408: $recent{$cid} = 1;
7409: }
7410: next;
7411: }
1.453 raeburn 7412: my $items = &Apache::lonnet::thaw_unescape($value);
7413: if (ref($items) eq 'HASH') {
7414: my $hashid = $unesc_key;
7415: $hashid =~ s/_/:/;
1.459 raeburn 7416: $courseinfo{$hashid} = $items;
1.453 raeburn 7417: if (ref($homecourses->{$hashid}) eq 'ARRAY') {
7418: my ($reqdmajor,$reqdminor) = split(/\./,$items->{'releaserequired'});
7419: if (&useable_role($reqdmajor,$reqdminor,$major,$minor)) {
7420: $okcourses{$hashid} = 1;
7421: }
7422: }
7423: }
7424: }
7425: unless (&untie_domain_hash($hashref)) {
7426: &logthis('Failed to untie tied hash for nohist_courseids.db');
7427: }
7428: } else {
7429: &logthis('Failed to tie hash for nohist_courseids.db');
7430: return;
7431: }
1.459 raeburn 7432: foreach my $hashid (keys(%recent)) {
1.465 raeburn 7433: my ($result,$cached)=&Apache::lonnet::is_cached_new('courseinfo',$hashid);
1.464 raeburn 7434: unless ($cached) {
7435: &Apache::lonnet::do_cache_new('courseinfo',$hashid,$courseinfo{$hashid},600);
7436: }
1.459 raeburn 7437: }
7438: foreach my $hashid (keys(%{$homecourses})) {
7439: next if ($recent{$hashid});
7440: &Apache::lonnet::do_cache_new('courseinfo',$hashid,$courseinfo{$hashid},600);
7441: }
1.453 raeburn 7442: foreach my $hashid (keys(%okcourses)) {
7443: if (ref($homecourses->{$hashid}) eq 'ARRAY') {
7444: foreach my $role (@{$homecourses->{$hashid}}) {
7445: if (ref($role) eq 'HASH') {
7446: while (my ($key,$value) = each(%{$role})) {
7447: if ($regexp eq '.') {
7448: $count++;
7449: if (defined($range) && $count >= $end) { last; }
7450: if (defined($range) && $count < $start) { next; }
7451: $result.=$key.'='.$value.'&';
7452: } else {
7453: my $unescapeKey = &unescape($key);
7454: if (eval('$unescapeKey=~/$regexp/')) {
7455: $count++;
7456: if (defined($range) && $count >= $end) { last; }
7457: if (defined($range) && $count < $start) { next; }
7458: $result.="$key=$value&";
7459: }
7460: }
7461: }
7462: }
7463: }
7464: }
1.450 raeburn 7465: }
7466: }
1.453 raeburn 7467: return $result;
7468: }
7469:
7470: sub useable_role {
7471: my ($reqdmajor,$reqdminor,$major,$minor) = @_;
7472: if ($reqdmajor ne '' && $reqdminor ne '') {
7473: return if (($major eq '' && $minor eq '') ||
7474: ($major < $reqdmajor) ||
7475: (($major == $reqdmajor) && ($minor < $reqdminor)));
7476: }
7477: return 1;
1.450 raeburn 7478: }
7479:
1.61 harris41 7480: # ----------------------------------- POD (plain old documentation, CPAN style)
7481:
7482: =head1 NAME
7483:
7484: lond - "LON Daemon" Server (port "LOND" 5663)
7485:
7486: =head1 SYNOPSIS
7487:
1.74 harris41 7488: Usage: B<lond>
7489:
7490: Should only be run as user=www. This is a command-line script which
7491: is invoked by B<loncron>. There is no expectation that a typical user
7492: will manually start B<lond> from the command-line. (In other words,
7493: DO NOT START B<lond> YOURSELF.)
1.61 harris41 7494:
7495: =head1 DESCRIPTION
7496:
1.74 harris41 7497: There are two characteristics associated with the running of B<lond>,
7498: PROCESS MANAGEMENT (starting, stopping, handling child processes)
7499: and SERVER-SIDE ACTIVITIES (password authentication, user creation,
7500: subscriptions, etc). These are described in two large
7501: sections below.
7502:
7503: B<PROCESS MANAGEMENT>
7504:
1.61 harris41 7505: Preforker - server who forks first. Runs as a daemon. HUPs.
7506: Uses IDEA encryption
7507:
1.74 harris41 7508: B<lond> forks off children processes that correspond to the other servers
7509: in the network. Management of these processes can be done at the
7510: parent process level or the child process level.
7511:
7512: B<logs/lond.log> is the location of log messages.
7513:
7514: The process management is now explained in terms of linux shell commands,
7515: subroutines internal to this code, and signal assignments:
7516:
7517: =over 4
7518:
7519: =item *
7520:
7521: PID is stored in B<logs/lond.pid>
7522:
7523: This is the process id number of the parent B<lond> process.
7524:
7525: =item *
7526:
7527: SIGTERM and SIGINT
7528:
7529: Parent signal assignment:
7530: $SIG{INT} = $SIG{TERM} = \&HUNTSMAN;
7531:
7532: Child signal assignment:
7533: $SIG{INT} = 'DEFAULT'; (and SIGTERM is DEFAULT also)
7534: (The child dies and a SIGALRM is sent to parent, awaking parent from slumber
7535: to restart a new child.)
7536:
7537: Command-line invocations:
7538: B<kill> B<-s> SIGTERM I<PID>
7539: B<kill> B<-s> SIGINT I<PID>
7540:
7541: Subroutine B<HUNTSMAN>:
7542: This is only invoked for the B<lond> parent I<PID>.
7543: This kills all the children, and then the parent.
7544: The B<lonc.pid> file is cleared.
7545:
7546: =item *
7547:
7548: SIGHUP
7549:
7550: Current bug:
7551: This signal can only be processed the first time
7552: on the parent process. Subsequent SIGHUP signals
7553: have no effect.
7554:
7555: Parent signal assignment:
7556: $SIG{HUP} = \&HUPSMAN;
7557:
7558: Child signal assignment:
7559: none (nothing happens)
7560:
7561: Command-line invocations:
7562: B<kill> B<-s> SIGHUP I<PID>
7563:
7564: Subroutine B<HUPSMAN>:
7565: This is only invoked for the B<lond> parent I<PID>,
7566: This kills all the children, and then the parent.
7567: The B<lond.pid> file is cleared.
7568:
7569: =item *
7570:
7571: SIGUSR1
7572:
7573: Parent signal assignment:
7574: $SIG{USR1} = \&USRMAN;
7575:
7576: Child signal assignment:
7577: $SIG{USR1}= \&logstatus;
7578:
7579: Command-line invocations:
7580: B<kill> B<-s> SIGUSR1 I<PID>
7581:
7582: Subroutine B<USRMAN>:
7583: When invoked for the B<lond> parent I<PID>,
7584: SIGUSR1 is sent to all the children, and the status of
7585: each connection is logged.
1.144 foxr 7586:
7587: =item *
7588:
7589: SIGUSR2
7590:
7591: Parent Signal assignment:
7592: $SIG{USR2} = \&UpdateHosts
7593:
7594: Child signal assignment:
7595: NONE
7596:
1.74 harris41 7597:
7598: =item *
7599:
7600: SIGCHLD
7601:
7602: Parent signal assignment:
7603: $SIG{CHLD} = \&REAPER;
7604:
7605: Child signal assignment:
7606: none
7607:
7608: Command-line invocations:
7609: B<kill> B<-s> SIGCHLD I<PID>
7610:
7611: Subroutine B<REAPER>:
7612: This is only invoked for the B<lond> parent I<PID>.
7613: Information pertaining to the child is removed.
7614: The socket port is cleaned up.
7615:
7616: =back
7617:
7618: B<SERVER-SIDE ACTIVITIES>
7619:
7620: Server-side information can be accepted in an encrypted or non-encrypted
7621: method.
7622:
7623: =over 4
7624:
7625: =item ping
7626:
7627: Query a client in the hosts.tab table; "Are you there?"
7628:
7629: =item pong
7630:
7631: Respond to a ping query.
7632:
7633: =item ekey
7634:
7635: Read in encrypted key, make cipher. Respond with a buildkey.
7636:
7637: =item load
7638:
7639: Respond with CPU load based on a computation upon /proc/loadavg.
7640:
7641: =item currentauth
7642:
7643: Reply with current authentication information (only over an
7644: encrypted channel).
7645:
7646: =item auth
7647:
7648: Only over an encrypted channel, reply as to whether a user's
7649: authentication information can be validated.
7650:
7651: =item passwd
7652:
7653: Allow for a password to be set.
7654:
7655: =item makeuser
7656:
7657: Make a user.
7658:
7659: =item passwd
7660:
7661: Allow for authentication mechanism and password to be changed.
7662:
7663: =item home
1.61 harris41 7664:
1.74 harris41 7665: Respond to a question "are you the home for a given user?"
7666:
7667: =item update
7668:
7669: Update contents of a subscribed resource.
7670:
7671: =item unsubscribe
7672:
7673: The server is unsubscribing from a resource.
7674:
7675: =item subscribe
7676:
7677: The server is subscribing to a resource.
7678:
7679: =item log
7680:
7681: Place in B<logs/lond.log>
7682:
7683: =item put
7684:
7685: stores hash in namespace
7686:
1.230 foxr 7687: =item rolesputy
1.74 harris41 7688:
7689: put a role into a user's environment
7690:
7691: =item get
7692:
7693: returns hash with keys from array
7694: reference filled in from namespace
7695:
7696: =item eget
7697:
7698: returns hash with keys from array
7699: reference filled in from namesp (encrypts the return communication)
7700:
7701: =item rolesget
7702:
7703: get a role from a user's environment
7704:
7705: =item del
7706:
7707: deletes keys out of array from namespace
7708:
7709: =item keys
7710:
7711: returns namespace keys
7712:
7713: =item dump
7714:
7715: dumps the complete (or key matching regexp) namespace into a hash
7716:
7717: =item store
7718:
7719: stores hash permanently
7720: for this url; hashref needs to be given and should be a \%hashname; the
7721: remaining args aren't required and if they aren't passed or are '' they will
7722: be derived from the ENV
7723:
7724: =item restore
7725:
7726: returns a hash for a given url
7727:
7728: =item querysend
7729:
7730: Tells client about the lonsql process that has been launched in response
7731: to a sent query.
7732:
7733: =item queryreply
7734:
7735: Accept information from lonsql and make appropriate storage in temporary
7736: file space.
7737:
7738: =item idput
7739:
7740: Defines usernames as corresponding to IDs. (These "IDs" are unique identifiers
7741: for each student, defined perhaps by the institutional Registrar.)
7742:
7743: =item idget
7744:
7745: Returns usernames corresponding to IDs. (These "IDs" are unique identifiers
7746: for each student, defined perhaps by the institutional Registrar.)
7747:
7748: =item tmpput
7749:
7750: Accept and store information in temporary space.
7751:
7752: =item tmpget
7753:
7754: Send along temporarily stored information.
7755:
7756: =item ls
7757:
7758: List part of a user's directory.
7759:
1.135 foxr 7760: =item pushtable
7761:
7762: Pushes a file in /home/httpd/lonTab directory. Currently limited to:
7763: hosts.tab and domain.tab. The old file is copied to *.tab.backup but
7764: must be restored manually in case of a problem with the new table file.
7765: pushtable requires that the request be encrypted and validated via
7766: ValidateManager. The form of the command is:
7767: enc:pushtable tablename <tablecontents> \n
7768: where pushtable, tablename and <tablecontents> will be encrypted, but \n is a
7769: cleartext newline.
7770:
1.74 harris41 7771: =item Hanging up (exit or init)
7772:
7773: What to do when a client tells the server that they (the client)
7774: are leaving the network.
7775:
7776: =item unknown command
7777:
7778: If B<lond> is sent an unknown command (not in the list above),
7779: it replys to the client "unknown_cmd".
1.135 foxr 7780:
1.74 harris41 7781:
7782: =item UNKNOWN CLIENT
7783:
7784: If the anti-spoofing algorithm cannot verify the client,
7785: the client is rejected (with a "refused" message sent
7786: to the client, and the connection is closed.
7787:
7788: =back
1.61 harris41 7789:
7790: =head1 PREREQUISITES
7791:
7792: IO::Socket
7793: IO::File
7794: Apache::File
7795: POSIX
7796: Crypt::IDEA
7797: LWP::UserAgent()
7798: GDBM_File
7799: Authen::Krb4
1.91 albertel 7800: Authen::Krb5
1.61 harris41 7801:
7802: =head1 COREQUISITES
7803:
7804: =head1 OSNAMES
7805:
7806: linux
7807:
7808: =head1 SCRIPT CATEGORIES
7809:
7810: Server/Process
7811:
7812: =cut
1.409 foxr 7813:
7814:
7815: =pod
7816:
7817: =head1 LOG MESSAGES
7818:
7819: The messages below can be emitted in the lond log. This log is located
7820: in ~httpd/perl/logs/lond.log Many log messages have HTML encapsulation
7821: to provide coloring if examined from inside a web page. Some do not.
7822: Where color is used, the colors are; Red for sometihhng to get excited
7823: about and to follow up on. Yellow for something to keep an eye on to
7824: be sure it does not get worse, Green,and Blue for informational items.
7825:
7826: In the discussions below, sometimes reference is made to ~httpd
7827: when describing file locations. There isn't really an httpd
7828: user, however there is an httpd directory that gets installed in the
7829: place that user home directories go. On linux, this is usually
7830: (always?) /home/httpd.
7831:
7832:
7833: Some messages are colorless. These are usually (not always)
7834: Green/Blue color level messages.
7835:
7836: =over 2
7837:
7838: =item (Red) LocalConnection rejecting non local: <ip> ne 127.0.0.1
7839:
7840: A local connection negotiation was attempted by
7841: a host whose IP address was not 127.0.0.1.
7842: The socket is closed and the child will exit.
7843: lond has three ways to establish an encyrption
7844: key with a client:
7845:
7846: =over 2
7847:
7848: =item local
7849:
7850: The key is written and read from a file.
7851: This is only valid for connections from localhost.
7852:
7853: =item insecure
7854:
7855: The key is generated by the server and
7856: transmitted to the client.
7857:
7858: =item ssl (secure)
7859:
7860: An ssl connection is negotiated with the client,
7861: the key is generated by the server and sent to the
7862: client across this ssl connection before the
7863: ssl connectionis terminated and clear text
7864: transmission resumes.
7865:
7866: =back
7867:
7868: =item (Red) LocalConnection: caller is insane! init = <init> and type = <type>
7869:
7870: The client is local but has not sent an initialization
7871: string that is the literal "init:local" The connection
7872: is closed and the child exits.
7873:
7874: =item Red CRITICAL Can't get key file <error>
7875:
7876: SSL key negotiation is being attempted but the call to
7877: lonssl::KeyFile failed. This usually means that the
7878: configuration file is not correctly defining or protecting
7879: the directories/files lonCertificateDirectory or
7880: lonnetPrivateKey
7881: <error> is a string that describes the reason that
7882: the key file could not be located.
7883:
7884: =item (Red) CRITICAL Can't get certificates <error>
7885:
7886: SSL key negotiation failed because we were not able to retrives our certificate
7887: or the CA's certificate in the call to lonssl::CertificateFile
7888: <error> is the textual reason this failed. Usual reasons:
7889:
7890: =over 2
7891:
7892: =item Apache config file for loncapa incorrect:
7893:
7894: one of the variables
7895: lonCertificateDirectory, lonnetCertificateAuthority, or lonnetCertificate
7896: undefined or incorrect
7897:
7898: =item Permission error:
7899:
7900: The directory pointed to by lonCertificateDirectory is not readable by lond
7901:
7902: =item Permission error:
7903:
7904: Files in the directory pointed to by lonCertificateDirectory are not readable by lond.
7905:
7906: =item Installation error:
7907:
7908: Either the certificate authority file or the certificate have not
7909: been installed in lonCertificateDirectory.
7910:
7911: =item (Red) CRITICAL SSL Socket promotion failed: <err>
7912:
7913: The promotion of the connection from plaintext to SSL failed
7914: <err> is the reason for the failure. There are two
7915: system calls involved in the promotion (one of which failed),
7916: a dup to produce
7917: a second fd on the raw socket over which the encrypted data
7918: will flow and IO::SOcket::SSL->new_from_fd which creates
7919: the SSL connection on the duped fd.
7920:
7921: =item (Blue) WARNING client did not respond to challenge
7922:
7923: This occurs on an insecure (non SSL) connection negotiation request.
7924: lond generates some number from the time, the PID and sends it to
7925: the client. The client must respond by echoing this information back.
7926: If the client does not do so, that's a violation of the challenge
7927: protocols and the connection will be failed.
7928:
7929: =item (Red) No manager table. Nobody can manage!!
7930:
7931: lond has the concept of privileged hosts that
7932: can perform remote management function such
7933: as update the hosts.tab. The manager hosts
7934: are described in the
7935: ~httpd/lonTabs/managers.tab file.
7936: this message is logged if this file is missing.
7937:
7938:
7939: =item (Green) Registering manager <dnsname> as <cluster_name> with <ipaddress>
7940:
7941: Reports the successful parse and registration
7942: of a specific manager.
7943:
7944: =item Green existing host <clustername:dnsname>
7945:
7946: The manager host is already defined in the hosts.tab
7947: the information in that table, rather than the info in the
7948: manager table will be used to determine the manager's ip.
7949:
7950: =item (Red) Unable to craete <filename>
7951:
7952: lond has been asked to create new versions of an administrative
7953: file (by a manager). When this is done, the new file is created
7954: in a temp file and then renamed into place so that there are always
7955: usable administrative files, even if the update fails. This failure
7956: message means that the temp file could not be created.
7957: The update is abandoned, and the old file is available for use.
7958:
7959: =item (Green) CopyFile from <oldname> to <newname> failed
7960:
7961: In an update of administrative files, the copy of the existing file to a
7962: backup file failed. The installation of the new file may still succeed,
7963: but there will not be a back up file to rever to (this should probably
7964: be yellow).
7965:
7966: =item (Green) Pushfile: backed up <oldname> to <newname>
7967:
7968: See above, the backup of the old administrative file succeeded.
7969:
7970: =item (Red) Pushfile: Unable to install <filename> <reason>
7971:
7972: The new administrative file could not be installed. In this case,
7973: the old administrative file is still in use.
7974:
7975: =item (Green) Installed new < filename>.
7976:
7977: The new administrative file was successfullly installed.
7978:
7979: =item (Red) Reinitializing lond pid=<pid>
7980:
7981: The lonc child process <pid> will be sent a USR2
7982: signal.
7983:
7984: =item (Red) Reinitializing self
7985:
7986: We've been asked to re-read our administrative files,and
7987: are doing so.
7988:
7989: =item (Yellow) error:Invalid process identifier <ident>
7990:
7991: A reinit command was received, but the target part of the
7992: command was not valid. It must be either
7993: 'lond' or 'lonc' but was <ident>
7994:
7995: =item (Green) isValideditCommand checking: Command = <command> Key = <key> newline = <newline>
7996:
7997: Checking to see if lond has been handed a valid edit
7998: command. It is possible the edit command is not valid
7999: in that case there are no log messages to indicate that.
8000:
8001: =item Result of password change for <username> pwchange_success
8002:
8003: The password for <username> was
8004: successfully changed.
8005:
8006: =item Unable to open <user> passwd to change password
8007:
8008: Could not rewrite the
8009: internal password file for a user
8010:
8011: =item Result of password change for <user> : <result>
8012:
8013: A unix password change for <user> was attempted
8014: and the pipe returned <result>
8015:
8016: =item LWP GET: <message> for <fname> (<remoteurl>)
8017:
8018: The lightweight process fetch for a resource failed
8019: with <message> the local filename that should
8020: have existed/been created was <fname> the
8021: corresponding URI: <remoteurl> This is emitted in several
8022: places.
8023:
8024: =item Unable to move <transname> to <destname>
8025:
8026: From fetch_user_file_handler - the user file was replicated but could not
8027: be mv'd to its final location.
8028:
8029: =item Looking for <domain> <username>
8030:
8031: From user_has_session_handler - This should be a Debug call instead
8032: it indicates lond is about to check whether the specified user has a
8033: session active on the specified domain on the local host.
8034:
8035: =item Client <ip> (<name>) hanging up: <input>
8036:
8037: lond has been asked to exit by its client. The <ip> and <name> identify the
8038: client systemand <input> is the full exit command sent to the server.
8039:
8040: =item Red CRITICAL: ABNORMAL EXIT. child <pid> for server <hostname> died through a crass with this error->[<message>].
8041:
8042: A lond child terminated. NOte that this termination can also occur when the
8043: child receives the QUIT or DIE signals. <pid> is the process id of the child,
8044: <hostname> the host lond is working for, and <message> the reason the child died
8045: to the best of our ability to get it (I would guess that any numeric value
8046: represents and errno value). This is immediately followed by
8047:
8048: =item Famous last words: Catching exception - <log>
8049:
8050: Where log is some recent information about the state of the child.
8051:
8052: =item Red CRITICAL: TIME OUT <pid>
8053:
8054: Some timeout occured for server <pid>. THis is normally a timeout on an LWP
8055: doing an HTTP::GET.
8056:
8057: =item child <pid> died
8058:
8059: The reaper caught a SIGCHILD for the lond child process <pid>
8060: This should be modified to also display the IP of the dying child
8061: $children{$pid}
8062:
8063: =item Unknown child 0 died
8064: A child died but the wait for it returned a pid of zero which really should not
8065: ever happen.
8066:
8067: =item Child <which> - <pid> looks like we missed it's death
8068:
8069: When a sigchild is received, the reaper process checks all children to see if they are
8070: alive. If children are dying quite quickly, the lack of signal queuing can mean
8071: that a signal hearalds the death of more than one child. If so this message indicates
8072: which other one died. <which> is the ip of a dead child
8073:
8074: =item Free socket: <shutdownretval>
8075:
8076: The HUNTSMAN sub was called due to a SIGINT in a child process. The socket is being shutdown.
8077: for whatever reason, <shutdownretval> is printed but in fact shutdown() is not documented
8078: to return anything. This is followed by:
8079:
8080: =item Red CRITICAL: Shutting down
8081:
8082: Just prior to exit.
8083:
8084: =item Free socket: <shutdownretval>
8085:
8086: The HUPSMAN sub was called due to a SIGHUP. all children get killsed, and lond execs itself.
8087: This is followed by:
8088:
8089: =item (Red) CRITICAL: Restarting
8090:
8091: lond is about to exec itself to restart.
8092:
8093: =item (Blue) Updating connections
8094:
8095: (In response to a USR2). All the children (except the one for localhost)
8096: are about to be killed, the hosts tab reread, and Apache reloaded via apachereload.
8097:
8098: =item (Blue) UpdateHosts killing child <pid> for ip <ip>
8099:
8100: Due to USR2 as above.
8101:
8102: =item (Green) keeping child for ip <ip> (pid = <pid>)
8103:
8104: In response to USR2 as above, the child indicated is not being restarted because
8105: it's assumed that we'll always need a child for the localhost.
8106:
8107:
8108: =item Going to check on the children
8109:
8110: Parent is about to check on the health of the child processes.
8111: Note that this is in response to a USR1 sent to the parent lond.
8112: there may be one or more of the next two messages:
8113:
8114: =item <pid> is dead
8115:
8116: A child that we have in our child hash as alive has evidently died.
8117:
8118: =item Child <pid> did not respond
8119:
8120: In the health check the child <pid> did not update/produce a pid_.txt
8121: file when sent it's USR1 signal. That process is killed with a 9 signal, as it's
8122: assumed to be hung in some un-fixable way.
8123:
8124: =item Finished checking children
8125:
8126: Master processs's USR1 processing is cojmplete.
8127:
8128: =item (Red) CRITICAL: ------- Starting ------
8129:
8130: (There are more '-'s on either side). Lond has forked itself off to
8131: form a new session and is about to start actual initialization.
8132:
8133: =item (Green) Attempting to start child (<client>)
8134:
8135: Started a new child process for <client>. Client is IO::Socket object
8136: connected to the child. This was as a result of a TCP/IP connection from a client.
8137:
8138: =item Unable to determine who caller was, getpeername returned nothing
8139:
8140: In child process initialization. either getpeername returned undef or
8141: a zero sized object was returned. Processing continues, but in my opinion,
8142: this should be cause for the child to exit.
8143:
8144: =item Unable to determine clientip
8145:
8146: In child process initialization. The peer address from getpeername was not defined.
8147: The client address is stored as "Unavailable" and processing continues.
8148:
8149: =item (Yellow) INFO: Connection <ip> <name> connection type = <type>
8150:
8151: In child initialization. A good connectionw as received from <ip>.
8152:
8153: =over 2
8154:
8155: =item <name>
8156:
8157: is the name of the client from hosts.tab.
8158:
8159: =item <type>
8160:
8161: Is the connection type which is either
8162:
8163: =over 2
8164:
8165: =item manager
8166:
8167: The connection is from a manager node, not in hosts.tab
8168:
8169: =item client
8170:
8171: the connection is from a non-manager in the hosts.tab
8172:
8173: =item both
8174:
8175: The connection is from a manager in the hosts.tab.
8176:
8177: =back
8178:
8179: =back
8180:
8181: =item (Blue) Certificates not installed -- trying insecure auth
8182:
8183: One of the certificate file, key file or
8184: certificate authority file could not be found for a client attempting
8185: SSL connection intiation. COnnection will be attemptied in in-secure mode.
8186: (this would be a system with an up to date lond that has not gotten a
8187: certificate from us).
8188:
8189: =item (Green) Successful local authentication
8190:
8191: A local connection successfully negotiated the encryption key.
8192: In this case the IDEA key is in a file (that is hopefully well protected).
8193:
8194: =item (Green) Successful ssl authentication with <client>
8195:
8196: The client (<client> is the peer's name in hosts.tab), has successfully
8197: negotiated an SSL connection with this child process.
8198:
8199: =item (Green) Successful insecure authentication with <client>
8200:
8201:
8202: The client has successfully negotiated an insecure connection withthe child process.
8203:
8204: =item (Yellow) Attempted insecure connection disallowed
8205:
8206: The client attempted and failed to successfully negotiate a successful insecure
8207: connection. This can happen either because the variable londAllowInsecure is false
8208: or undefined, or becuse the child did not successfully echo back the challenge
8209: string.
8210:
8211:
8212: =back
8213:
1.441 raeburn 8214: =back
8215:
1.409 foxr 8216:
8217: =cut
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