Annotation of loncom/lond, revision 1.449
1.1 albertel 1: #!/usr/bin/perl
2: # The LearningOnline Network
3: # lond "LON Daemon" Server (port "LOND" 5663)
1.60 www 4: #
1.449 ! raeburn 5: # $Id: lond,v 1.448 2010/07/20 02:42:27 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:
1.414 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:
1.449 ! raeburn 61: my $VERSION='$Revision: 1.448 $'; #' 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:
1124: # Get the load average from /proc/loadavg and calculate it as a percentage of
1125: # the allowed load limit as set by the perl global variable lonLoadLim
1126:
1127: my $loadavg;
1128: my $loadfile=IO::File->new('/proc/loadavg');
1129:
1130: $loadavg=<$loadfile>;
1131: $loadavg =~ s/\s.*//g; # Extract the first field only.
1132:
1133: my $loadpercent=100*$loadavg/$perlvar{'lonLoadLim'};
1134:
1.387 albertel 1135: &Reply( $replyfd, \$loadpercent, "$cmd:$tail");
1.217 foxr 1136:
1137: return 1;
1138: }
1.263 albertel 1139: ®ister_handler("load", \&load_handler, 0, 1, 0);
1.217 foxr 1140:
1141: #
1142: # Process the userload request. This sub returns to the client the current
1143: # user load average. It can be invoked either by clients or managers.
1144: #
1145: # Parameters:
1146: # $cmd - the actual keyword that invoked us.
1147: # $tail - the tail of the request that invoked us.
1148: # $replyfd- File descriptor connected to the client
1149: # Implicit Inputs:
1150: # $currenthostid - Global variable that carries the name of the host
1151: # known as.
1.448 raeburn 1152: # $clientname - Global variable that carries the name of the host we're connected to.
1.217 foxr 1153: # Returns:
1154: # 1 - Ok to continue processing.
1155: # 0 - Program should exit
1156: # Implicit inputs:
1157: # whatever the userload() function requires.
1158: # Implicit outputs:
1159: # the reply is written to the client.
1160: #
1161: sub user_load_handler {
1162: my ($cmd, $tail, $replyfd) = @_;
1163:
1.365 albertel 1164: my $userloadpercent=&Apache::lonnet::userload();
1.387 albertel 1165: &Reply($replyfd, \$userloadpercent, "$cmd:$tail");
1.217 foxr 1166:
1167: return 1;
1168: }
1.263 albertel 1169: ®ister_handler("userload", \&user_load_handler, 0, 1, 0);
1.217 foxr 1170:
1.218 foxr 1171: # Process a request for the authorization type of a user:
1172: # (userauth).
1173: #
1174: # Parameters:
1175: # $cmd - the actual keyword that invoked us.
1176: # $tail - the tail of the request that invoked us.
1177: # $replyfd- File descriptor connected to the client
1178: # Returns:
1179: # 1 - Ok to continue processing.
1180: # 0 - Program should exit
1181: # Implicit outputs:
1182: # The user authorization type is written to the client.
1183: #
1184: sub user_authorization_type {
1185: my ($cmd, $tail, $replyfd) = @_;
1186:
1187: my $userinput = "$cmd:$tail";
1188:
1189: # Pull the domain and username out of the command tail.
1.222 foxr 1190: # and call get_auth_type to determine the authentication type.
1.218 foxr 1191:
1192: my ($udom,$uname)=split(/:/,$tail);
1.222 foxr 1193: my $result = &get_auth_type($udom, $uname);
1.218 foxr 1194: if($result eq "nouser") {
1195: &Failure( $replyfd, "unknown_user\n", $userinput);
1196: } else {
1197: #
1.222 foxr 1198: # We only want to pass the second field from get_auth_type
1.218 foxr 1199: # for ^krb.. otherwise we'll be handing out the encrypted
1200: # password for internals e.g.
1201: #
1202: my ($type,$otherinfo) = split(/:/,$result);
1203: if($type =~ /^krb/) {
1204: $type = $result;
1.269 raeburn 1205: } else {
1206: $type .= ':';
1207: }
1.387 albertel 1208: &Reply( $replyfd, \$type, $userinput);
1.218 foxr 1209: }
1210:
1211: return 1;
1212: }
1213: ®ister_handler("currentauth", \&user_authorization_type, 1, 1, 0);
1214:
1215: # Process a request by a manager to push a hosts or domain table
1216: # to us. We pick apart the command and pass it on to the subs
1217: # that already exist to do this.
1218: #
1219: # Parameters:
1220: # $cmd - the actual keyword that invoked us.
1221: # $tail - the tail of the request that invoked us.
1222: # $client - File descriptor connected to the client
1223: # Returns:
1224: # 1 - Ok to continue processing.
1225: # 0 - Program should exit
1226: # Implicit Output:
1227: # a reply is written to the client.
1228: sub push_file_handler {
1229: my ($cmd, $tail, $client) = @_;
1.412 foxr 1230: &Debug("In push file handler");
1.218 foxr 1231: my $userinput = "$cmd:$tail";
1232:
1233: # At this time we only know that the IP of our partner is a valid manager
1234: # the code below is a hook to do further authentication (e.g. to resolve
1235: # spoofing).
1236:
1237: my $cert = &GetCertificate($userinput);
1.412 foxr 1238: if(&ValidManager($cert)) {
1239: &Debug("Valid manager: $client");
1.218 foxr 1240:
1241: # Now presumably we have the bona fides of both the peer host and the
1242: # process making the request.
1243:
1244: my $reply = &PushFile($userinput);
1.387 albertel 1245: &Reply($client, \$reply, $userinput);
1.218 foxr 1246:
1247: } else {
1.412 foxr 1248: &logthis("push_file_handler $client is not valid");
1.218 foxr 1249: &Failure( $client, "refused\n", $userinput);
1250: }
1.219 foxr 1251: return 1;
1.218 foxr 1252: }
1253: ®ister_handler("pushfile", \&push_file_handler, 1, 0, 1);
1254:
1.399 raeburn 1255: # The du_handler routine should be considered obsolete and is retained
1256: # for communication with legacy servers. Please see the du2_handler.
1.243 banghart 1257: #
1.399 raeburn 1258: # du - list the disk usage of a directory recursively.
1.243 banghart 1259: #
1260: # note: stolen code from the ls file handler
1261: # under construction by Rick Banghart
1262: # .
1263: # Parameters:
1264: # $cmd - The command that dispatched us (du).
1265: # $ududir - The directory path to list... I'm not sure what this
1266: # is relative as things like ls:. return e.g.
1267: # no_such_dir.
1268: # $client - Socket open on the client.
1269: # Returns:
1270: # 1 - indicating that the daemon should not disconnect.
1271: # Side Effects:
1272: # The reply is written to $client.
1273: #
1274: sub du_handler {
1275: my ($cmd, $ududir, $client) = @_;
1.339 albertel 1276: ($ududir) = split(/:/,$ududir); # Make 'telnet' testing easier.
1.251 foxr 1277: my $userinput = "$cmd:$ududir";
1278:
1.245 albertel 1279: if ($ududir=~/\.\./ || $ududir!~m|^/home/httpd/|) {
1280: &Failure($client,"refused\n","$cmd:$ududir");
1281: return 1;
1282: }
1.249 foxr 1283: # Since $ududir could have some nasties in it,
1284: # we will require that ududir is a valid
1285: # directory. Just in case someone tries to
1286: # slip us a line like .;(cd /home/httpd rm -rf*)
1287: # etc.
1288: #
1289: if (-d $ududir) {
1.292 albertel 1290: my $total_size=0;
1291: my $code=sub {
1292: if ($_=~/\.\d+\./) { return;}
1293: if ($_=~/\.meta$/) { return;}
1.362 albertel 1294: if (-d $_) { return;}
1.292 albertel 1295: $total_size+=(stat($_))[7];
1296: };
1.295 raeburn 1297: chdir($ududir);
1.292 albertel 1298: find($code,$ududir);
1299: $total_size=int($total_size/1024);
1.387 albertel 1300: &Reply($client,\$total_size,"$cmd:$ududir");
1.249 foxr 1301: } else {
1.251 foxr 1302: &Failure($client, "bad_directory:$ududir\n","$cmd:$ududir");
1.249 foxr 1303: }
1.243 banghart 1304: return 1;
1305: }
1306: ®ister_handler("du", \&du_handler, 0, 1, 0);
1.218 foxr 1307:
1.399 raeburn 1308: # Please also see the du_handler, which is obsoleted by du2.
1309: # du2_handler differs from du_handler in that required path to directory
1310: # provided by &propath() is prepended in the handler instead of on the
1311: # client side.
1.239 foxr 1312: #
1.399 raeburn 1313: # du2 - list the disk usage of a directory recursively.
1314: #
1315: # Parameters:
1316: # $cmd - The command that dispatched us (du).
1317: # $tail - The tail of the request that invoked us.
1318: # $tail is a : separated list of the following:
1319: # - $ududir - directory path to list (before prepending)
1320: # - $getpropath = 1 if &propath() should prepend
1321: # - $uname - username to use for &propath or user dir
1322: # - $udom - domain to use for &propath or user dir
1323: # All are escaped.
1324: # $client - Socket open on the client.
1325: # Returns:
1326: # 1 - indicating that the daemon should not disconnect.
1327: # Side Effects:
1328: # The reply is written to $client.
1329: #
1330:
1331: sub du2_handler {
1332: my ($cmd, $tail, $client) = @_;
1333: my ($ududir,$getpropath,$uname,$udom) = map { &unescape($_) } (split(/:/, $tail));
1334: my $userinput = "$cmd:$tail";
1335: if (($ududir=~/\.\./) || (($ududir!~m|^/home/httpd/|) && (!$getpropath))) {
1336: &Failure($client,"refused\n","$cmd:$tail");
1337: return 1;
1338: }
1339: if ($getpropath) {
1340: if (($uname =~ /^$LONCAPA::match_name$/) && ($udom =~ /^$LONCAPA::match_domain$/)) {
1341: $ududir = &propath($udom,$uname).'/'.$ududir;
1342: } else {
1343: &Failure($client,"refused\n","$cmd:$tail");
1344: return 1;
1345: }
1346: }
1347: # Since $ududir could have some nasties in it,
1348: # we will require that ududir is a valid
1349: # directory. Just in case someone tries to
1350: # slip us a line like .;(cd /home/httpd rm -rf*)
1351: # etc.
1352: #
1353: if (-d $ududir) {
1354: my $total_size=0;
1355: my $code=sub {
1356: if ($_=~/\.\d+\./) { return;}
1357: if ($_=~/\.meta$/) { return;}
1358: if (-d $_) { return;}
1359: $total_size+=(stat($_))[7];
1360: };
1361: chdir($ududir);
1362: find($code,$ududir);
1363: $total_size=int($total_size/1024);
1364: &Reply($client,\$total_size,"$cmd:$ududir");
1365: } else {
1366: &Failure($client, "bad_directory:$ududir\n","$cmd:$tail");
1367: }
1368: return 1;
1369: }
1370: ®ister_handler("du2", \&du2_handler, 0, 1, 0);
1371:
1372: #
1373: # The ls_handler routine should be considered obsolete and is retained
1374: # for communication with legacy servers. Please see the ls3_handler.
1.280 matthew 1375: #
1.239 foxr 1376: # ls - list the contents of a directory. For each file in the
1377: # selected directory the filename followed by the full output of
1378: # the stat function is returned. The returned info for each
1379: # file are separated by ':'. The stat fields are separated by &'s.
1380: # Parameters:
1381: # $cmd - The command that dispatched us (ls).
1382: # $ulsdir - The directory path to list... I'm not sure what this
1383: # is relative as things like ls:. return e.g.
1384: # no_such_dir.
1385: # $client - Socket open on the client.
1386: # Returns:
1387: # 1 - indicating that the daemon should not disconnect.
1388: # Side Effects:
1389: # The reply is written to $client.
1390: #
1391: sub ls_handler {
1.280 matthew 1392: # obsoleted by ls2_handler
1.239 foxr 1393: my ($cmd, $ulsdir, $client) = @_;
1394:
1395: my $userinput = "$cmd:$ulsdir";
1396:
1397: my $obs;
1398: my $rights;
1399: my $ulsout='';
1400: my $ulsfn;
1401: if (-e $ulsdir) {
1402: if(-d $ulsdir) {
1403: if (opendir(LSDIR,$ulsdir)) {
1404: while ($ulsfn=readdir(LSDIR)) {
1.291 albertel 1405: undef($obs);
1406: undef($rights);
1.239 foxr 1407: my @ulsstats=stat($ulsdir.'/'.$ulsfn);
1408: #We do some obsolete checking here
1409: if(-e $ulsdir.'/'.$ulsfn.".meta") {
1410: open(FILE, $ulsdir.'/'.$ulsfn.".meta");
1411: my @obsolete=<FILE>;
1412: foreach my $obsolete (@obsolete) {
1.301 www 1413: if($obsolete =~ m/(<obsolete>)(on|1)/) { $obs = 1; }
1.239 foxr 1414: if($obsolete =~ m|(<copyright>)(default)|) { $rights = 1; }
1415: }
1416: }
1417: $ulsout.=$ulsfn.'&'.join('&',@ulsstats);
1418: if($obs eq '1') { $ulsout.="&1"; }
1419: else { $ulsout.="&0"; }
1420: if($rights eq '1') { $ulsout.="&1:"; }
1421: else { $ulsout.="&0:"; }
1422: }
1423: closedir(LSDIR);
1424: }
1425: } else {
1426: my @ulsstats=stat($ulsdir);
1427: $ulsout.=$ulsfn.'&'.join('&',@ulsstats).':';
1428: }
1429: } else {
1430: $ulsout='no_such_dir';
1431: }
1432: if ($ulsout eq '') { $ulsout='empty'; }
1.387 albertel 1433: &Reply($client, \$ulsout, $userinput); # This supports debug logging.
1.239 foxr 1434:
1435: return 1;
1436:
1437: }
1438: ®ister_handler("ls", \&ls_handler, 0, 1, 0);
1439:
1.399 raeburn 1440: # The ls2_handler routine should be considered obsolete and is retained
1441: # for communication with legacy servers. Please see the ls3_handler.
1442: # Please also see the ls_handler, which was itself obsoleted by ls2.
1.280 matthew 1443: # ls2_handler differs from ls_handler in that it escapes its return
1444: # values before concatenating them together with ':'s.
1445: #
1446: # ls2 - list the contents of a directory. For each file in the
1447: # selected directory the filename followed by the full output of
1448: # the stat function is returned. The returned info for each
1449: # file are separated by ':'. The stat fields are separated by &'s.
1450: # Parameters:
1451: # $cmd - The command that dispatched us (ls).
1452: # $ulsdir - The directory path to list... I'm not sure what this
1453: # is relative as things like ls:. return e.g.
1454: # no_such_dir.
1455: # $client - Socket open on the client.
1456: # Returns:
1457: # 1 - indicating that the daemon should not disconnect.
1458: # Side Effects:
1459: # The reply is written to $client.
1460: #
1461: sub ls2_handler {
1462: my ($cmd, $ulsdir, $client) = @_;
1463:
1464: my $userinput = "$cmd:$ulsdir";
1465:
1466: my $obs;
1467: my $rights;
1468: my $ulsout='';
1469: my $ulsfn;
1470: if (-e $ulsdir) {
1471: if(-d $ulsdir) {
1472: if (opendir(LSDIR,$ulsdir)) {
1473: while ($ulsfn=readdir(LSDIR)) {
1.291 albertel 1474: undef($obs);
1475: undef($rights);
1.280 matthew 1476: my @ulsstats=stat($ulsdir.'/'.$ulsfn);
1477: #We do some obsolete checking here
1478: if(-e $ulsdir.'/'.$ulsfn.".meta") {
1479: open(FILE, $ulsdir.'/'.$ulsfn.".meta");
1480: my @obsolete=<FILE>;
1481: foreach my $obsolete (@obsolete) {
1.301 www 1482: if($obsolete =~ m/(<obsolete>)(on|1)/) { $obs = 1; }
1.280 matthew 1483: if($obsolete =~ m|(<copyright>)(default)|) {
1484: $rights = 1;
1485: }
1486: }
1487: }
1488: my $tmp = $ulsfn.'&'.join('&',@ulsstats);
1489: if ($obs eq '1') { $tmp.="&1"; } else { $tmp.="&0"; }
1490: if ($rights eq '1') { $tmp.="&1"; } else { $tmp.="&0"; }
1491: $ulsout.= &escape($tmp).':';
1492: }
1493: closedir(LSDIR);
1494: }
1495: } else {
1496: my @ulsstats=stat($ulsdir);
1497: $ulsout.=$ulsfn.'&'.join('&',@ulsstats).':';
1498: }
1499: } else {
1500: $ulsout='no_such_dir';
1501: }
1502: if ($ulsout eq '') { $ulsout='empty'; }
1.387 albertel 1503: &Reply($client, \$ulsout, $userinput); # This supports debug logging.
1.280 matthew 1504: return 1;
1505: }
1506: ®ister_handler("ls2", \&ls2_handler, 0, 1, 0);
1.399 raeburn 1507: #
1508: # ls3 - list the contents of a directory. For each file in the
1509: # selected directory the filename followed by the full output of
1510: # the stat function is returned. The returned info for each
1511: # file are separated by ':'. The stat fields are separated by &'s.
1512: # Parameters:
1513: # $cmd - The command that dispatched us (ls).
1514: # $tail - The tail of the request that invoked us.
1515: # $tail is a : separated list of the following:
1516: # - $ulsdir - directory path to list (before prepending)
1517: # - $getpropath = 1 if &propath() should prepend
1518: # - $getuserdir = 1 if path to user dir in lonUsers should
1519: # prepend
1520: # - $alternate_root - path to prepend
1521: # - $uname - username to use for &propath or user dir
1522: # - $udom - domain to use for &propath or user dir
1523: # All of these except $getpropath and &getuserdir are escaped.
1524: # no_such_dir.
1525: # $client - Socket open on the client.
1526: # Returns:
1527: # 1 - indicating that the daemon should not disconnect.
1528: # Side Effects:
1529: # The reply is written to $client.
1530: #
1531:
1532: sub ls3_handler {
1533: my ($cmd, $tail, $client) = @_;
1534: my $userinput = "$cmd:$tail";
1535: my ($ulsdir,$getpropath,$getuserdir,$alternate_root,$uname,$udom) =
1536: split(/:/,$tail);
1537: if (defined($ulsdir)) {
1538: $ulsdir = &unescape($ulsdir);
1539: }
1540: if (defined($alternate_root)) {
1541: $alternate_root = &unescape($alternate_root);
1542: }
1543: if (defined($uname)) {
1544: $uname = &unescape($uname);
1545: }
1546: if (defined($udom)) {
1547: $udom = &unescape($udom);
1548: }
1549:
1550: my $dir_root = $perlvar{'lonDocRoot'};
1551: if ($getpropath) {
1552: if (($uname =~ /^$LONCAPA::match_name$/) && ($udom =~ /^$LONCAPA::match_domain$/)) {
1553: $dir_root = &propath($udom,$uname);
1554: $dir_root =~ s/\/$//;
1555: } else {
1556: &Failure($client,"refused\n","$cmd:$tail");
1557: return 1;
1558: }
1559: } elsif ($getuserdir) {
1560: if (($uname =~ /^$LONCAPA::match_name$/) && ($udom =~ /^$LONCAPA::match_domain$/)) {
1561: my $subdir=$uname.'__';
1562: $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;
1563: $dir_root = $Apache::lonnet::perlvar{'lonUsersDir'}
1564: ."/$udom/$subdir/$uname";
1565: } else {
1566: &Failure($client,"refused\n","$cmd:$tail");
1567: return 1;
1568: }
1.400 raeburn 1569: } elsif ($alternate_root ne '') {
1.399 raeburn 1570: $dir_root = $alternate_root;
1571: }
1.408 raeburn 1572: if (($dir_root ne '') && ($dir_root ne '/')) {
1.400 raeburn 1573: if ($ulsdir =~ /^\//) {
1574: $ulsdir = $dir_root.$ulsdir;
1575: } else {
1576: $ulsdir = $dir_root.'/'.$ulsdir;
1577: }
1.399 raeburn 1578: }
1579: my $obs;
1580: my $rights;
1581: my $ulsout='';
1582: my $ulsfn;
1583: if (-e $ulsdir) {
1584: if(-d $ulsdir) {
1585: if (opendir(LSDIR,$ulsdir)) {
1586: while ($ulsfn=readdir(LSDIR)) {
1587: undef($obs);
1588: undef($rights);
1589: my @ulsstats=stat($ulsdir.'/'.$ulsfn);
1590: #We do some obsolete checking here
1591: if(-e $ulsdir.'/'.$ulsfn.".meta") {
1592: open(FILE, $ulsdir.'/'.$ulsfn.".meta");
1593: my @obsolete=<FILE>;
1594: foreach my $obsolete (@obsolete) {
1595: if($obsolete =~ m/(<obsolete>)(on|1)/) { $obs = 1; }
1596: if($obsolete =~ m|(<copyright>)(default)|) {
1597: $rights = 1;
1598: }
1599: }
1600: }
1601: my $tmp = $ulsfn.'&'.join('&',@ulsstats);
1602: if ($obs eq '1') { $tmp.="&1"; } else { $tmp.="&0"; }
1603: if ($rights eq '1') { $tmp.="&1"; } else { $tmp.="&0"; }
1604: $ulsout.= &escape($tmp).':';
1605: }
1606: closedir(LSDIR);
1607: }
1608: } else {
1609: my @ulsstats=stat($ulsdir);
1610: $ulsout.=$ulsfn.'&'.join('&',@ulsstats).':';
1611: }
1612: } else {
1613: $ulsout='no_such_dir';
1.400 raeburn 1614: }
1615: if ($ulsout eq '') { $ulsout='empty'; }
1616: &Reply($client, \$ulsout, $userinput); # This supports debug logging.
1617: return 1;
1.399 raeburn 1618: }
1619: ®ister_handler("ls3", \&ls3_handler, 0, 1, 0);
1.280 matthew 1620:
1.410 raeburn 1621: sub server_timezone_handler {
1622: my ($cmd,$tail,$client) = @_;
1623: my $userinput = "$cmd:$tail";
1624: my $timezone;
1625: my $clockfile = '/etc/sysconfig/clock'; # Fedora/CentOS/SuSE
1626: my $tzfile = '/etc/timezone'; # Debian/Ubuntu
1627: if (-e $clockfile) {
1628: if (open(my $fh,"<$clockfile")) {
1629: while (<$fh>) {
1630: next if (/^[\#\s]/);
1631: if (/^(?:TIME)?ZONE\s*=\s*['"]?\s*([\w\/]+)/) {
1632: $timezone = $1;
1633: last;
1634: }
1635: }
1636: close($fh);
1637: }
1638: } elsif (-e $tzfile) {
1639: if (open(my $fh,"<$tzfile")) {
1640: $timezone = <$fh>;
1641: close($fh);
1642: chomp($timezone);
1643: if ($timezone =~ m{^Etc/(\w+)$}) {
1644: $timezone = $1;
1645: }
1646: }
1647: }
1648: &Reply($client,\$timezone,$userinput); # This supports debug logging.
1649: return 1;
1650: }
1651: ®ister_handler("servertimezone", \&server_timezone_handler, 0, 1, 0);
1652:
1.413 raeburn 1653: sub server_loncaparev_handler {
1654: my ($cmd,$tail,$client) = @_;
1655: my $userinput = "$cmd:$tail";
1656: &Reply($client,\$perlvar{'lonVersion'},$userinput);
1657: return 1;
1658: }
1659: ®ister_handler("serverloncaparev", \&server_loncaparev_handler, 0, 1, 0);
1660:
1.448 raeburn 1661: sub server_homeID_handler {
1662: my ($cmd,$tail,$client) = @_;
1663: my $userinput = "$cmd:$tail";
1664: &Reply($client,\$perlvar{'lonHostID'},$userinput);
1665: return 1;
1666: }
1667: ®ister_handler("serverhomeID", \&server_homeID_handler, 0, 1, 0);
1668:
1.218 foxr 1669: # Process a reinit request. Reinit requests that either
1670: # lonc or lond be reinitialized so that an updated
1671: # host.tab or domain.tab can be processed.
1672: #
1673: # Parameters:
1674: # $cmd - the actual keyword that invoked us.
1675: # $tail - the tail of the request that invoked us.
1676: # $client - File descriptor connected to the client
1677: # Returns:
1678: # 1 - Ok to continue processing.
1679: # 0 - Program should exit
1680: # Implicit output:
1681: # a reply is sent to the client.
1682: #
1683: sub reinit_process_handler {
1684: my ($cmd, $tail, $client) = @_;
1685:
1686: my $userinput = "$cmd:$tail";
1687:
1688: my $cert = &GetCertificate($userinput);
1689: if(&ValidManager($cert)) {
1690: chomp($userinput);
1691: my $reply = &ReinitProcess($userinput);
1.387 albertel 1692: &Reply( $client, \$reply, $userinput);
1.218 foxr 1693: } else {
1694: &Failure( $client, "refused\n", $userinput);
1695: }
1696: return 1;
1697: }
1698: ®ister_handler("reinit", \&reinit_process_handler, 1, 0, 1);
1699:
1700: # Process the editing script for a table edit operation.
1701: # the editing operation must be encrypted and requested by
1702: # a manager host.
1703: #
1704: # Parameters:
1705: # $cmd - the actual keyword that invoked us.
1706: # $tail - the tail of the request that invoked us.
1707: # $client - File descriptor connected to the client
1708: # Returns:
1709: # 1 - Ok to continue processing.
1710: # 0 - Program should exit
1711: # Implicit output:
1712: # a reply is sent to the client.
1713: #
1714: sub edit_table_handler {
1715: my ($command, $tail, $client) = @_;
1716:
1717: my $userinput = "$command:$tail";
1718:
1719: my $cert = &GetCertificate($userinput);
1720: if(&ValidManager($cert)) {
1721: my($filetype, $script) = split(/:/, $tail);
1722: if (($filetype eq "hosts") ||
1723: ($filetype eq "domain")) {
1724: if($script ne "") {
1725: &Reply($client, # BUGBUG - EditFile
1726: &EditFile($userinput), # could fail.
1727: $userinput);
1728: } else {
1729: &Failure($client,"refused\n",$userinput);
1730: }
1731: } else {
1732: &Failure($client,"refused\n",$userinput);
1733: }
1734: } else {
1735: &Failure($client,"refused\n",$userinput);
1736: }
1737: return 1;
1738: }
1.263 albertel 1739: ®ister_handler("edit", \&edit_table_handler, 1, 0, 1);
1.218 foxr 1740:
1.220 foxr 1741: #
1742: # Authenticate a user against the LonCAPA authentication
1743: # database. Note that there are several authentication
1744: # possibilities:
1745: # - unix - The user can be authenticated against the unix
1746: # password file.
1747: # - internal - The user can be authenticated against a purely
1748: # internal per user password file.
1749: # - kerberos - The user can be authenticated against either a kerb4 or kerb5
1750: # ticket granting authority.
1751: # - user - The person tailoring LonCAPA can supply a user authentication
1752: # mechanism that is per system.
1753: #
1754: # Parameters:
1755: # $cmd - The command that got us here.
1756: # $tail - Tail of the command (remaining parameters).
1757: # $client - File descriptor connected to client.
1758: # Returns
1759: # 0 - Requested to exit, caller should shut down.
1760: # 1 - Continue processing.
1761: # Implicit inputs:
1762: # The authentication systems describe above have their own forms of implicit
1763: # input into the authentication process that are described above.
1764: #
1765: sub authenticate_handler {
1766: my ($cmd, $tail, $client) = @_;
1767:
1768:
1769: # Regenerate the full input line
1770:
1771: my $userinput = $cmd.":".$tail;
1772:
1773: # udom - User's domain.
1774: # uname - Username.
1775: # upass - User's password.
1.396 raeburn 1776: # checkdefauth - Pass to validate_user() to try authentication
1777: # with default auth type(s) if no user account.
1.447 raeburn 1778: # clientcancheckhost - Passed by clients with functionality in lonauth.pm
1779: # to check if session can be hosted.
1.220 foxr 1780:
1.447 raeburn 1781: my ($udom, $uname, $upass, $checkdefauth, $clientcancheckhost)=split(/:/,$tail);
1.399 raeburn 1782: &Debug(" Authenticate domain = $udom, user = $uname, password = $upass, checkdefauth = $checkdefauth");
1.220 foxr 1783: chomp($upass);
1784: $upass=&unescape($upass);
1785:
1.396 raeburn 1786: my $pwdcorrect = &validate_user($udom,$uname,$upass,$checkdefauth);
1.220 foxr 1787: if($pwdcorrect) {
1.447 raeburn 1788: my $canhost = 1;
1789: unless ($clientcancheckhost) {
1.448 raeburn 1790: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
1791: my $uint_dom = &Apache::lonnet::internet_dom($uprimary_id);
1792: my @intdoms = &Apache::lonnet::get_internet_names($clientname);
1793: unless ($uint_dom ne '' && grep(/^\Q$uint_dom\E$/,@intdoms)) {
1.447 raeburn 1794: my ($remote,$hosted);
1795: my $remotesession = &get_usersession_config($udom,'remotesession');
1796: if (ref($remotesession) eq 'HASH') {
1797: $remote = $remotesession->{'remote'}
1798: }
1.448 raeburn 1799: my $hostedsession = &get_usersession_config($clienthomedom,'hostedsession');
1.447 raeburn 1800: if (ref($hostedsession) eq 'HASH') {
1801: $hosted = $hostedsession->{'hosted'};
1802: }
1.449 ! raeburn 1803: my $loncaparev = $clientversion;
! 1804: if ($loncaparev eq '') {
! 1805: $loncaparev = $Apache::lonnet::loncaparevs{$clientname};
! 1806: }
1.448 raeburn 1807: $canhost = &Apache::lonnet::can_host_session($udom,$clientname,
1.449 ! raeburn 1808: $loncaparev,
1.447 raeburn 1809: $remote,$hosted);
1810: }
1811: }
1812: if ($canhost) {
1813: &Reply( $client, "authorized\n", $userinput);
1814: } else {
1815: &Reply( $client, "not_allowed_to_host\n", $userinput);
1816: }
1.220 foxr 1817: #
1818: # Bad credentials: Failed to authorize
1819: #
1820: } else {
1821: &Failure( $client, "non_authorized\n", $userinput);
1822: }
1823:
1824: return 1;
1825: }
1.263 albertel 1826: ®ister_handler("auth", \&authenticate_handler, 1, 1, 0);
1.214 foxr 1827:
1.222 foxr 1828: #
1829: # Change a user's password. Note that this function is complicated by
1830: # the fact that a user may be authenticated in more than one way:
1831: # At present, we are not able to change the password for all types of
1832: # authentication methods. Only for:
1833: # unix - unix password or shadow passoword style authentication.
1834: # local - Locally written authentication mechanism.
1835: # For now, kerb4 and kerb5 password changes are not supported and result
1836: # in an error.
1837: # FUTURE WORK:
1838: # Support kerberos passwd changes?
1839: # Parameters:
1840: # $cmd - The command that got us here.
1841: # $tail - Tail of the command (remaining parameters).
1842: # $client - File descriptor connected to client.
1843: # Returns
1844: # 0 - Requested to exit, caller should shut down.
1845: # 1 - Continue processing.
1846: # Implicit inputs:
1847: # The authentication systems describe above have their own forms of implicit
1848: # input into the authentication process that are described above.
1849: sub change_password_handler {
1850: my ($cmd, $tail, $client) = @_;
1851:
1852: my $userinput = $cmd.":".$tail; # Reconstruct client's string.
1853:
1854: #
1855: # udom - user's domain.
1856: # uname - Username.
1857: # upass - Current password.
1858: # npass - New password.
1.346 raeburn 1859: # context - Context in which this was called
1860: # (preferences or reset_by_email).
1.428 raeburn 1861: # lonhost - HostID of server where request originated
1.222 foxr 1862:
1.428 raeburn 1863: my ($udom,$uname,$upass,$npass,$context,$lonhost)=split(/:/,$tail);
1.222 foxr 1864:
1865: $upass=&unescape($upass);
1866: $npass=&unescape($npass);
1867: &Debug("Trying to change password for $uname");
1868:
1869: # First require that the user can be authenticated with their
1.346 raeburn 1870: # old password unless context was 'reset_by_email':
1871:
1.428 raeburn 1872: my ($validated,$failure);
1.346 raeburn 1873: if ($context eq 'reset_by_email') {
1.428 raeburn 1874: if ($lonhost eq '') {
1875: $failure = 'invalid_client';
1876: } else {
1877: $validated = 1;
1878: }
1.346 raeburn 1879: } else {
1880: $validated = &validate_user($udom, $uname, $upass);
1881: }
1.222 foxr 1882: if($validated) {
1883: my $realpasswd = &get_auth_type($udom, $uname); # Defined since authd.
1884:
1885: my ($howpwd,$contentpwd)=split(/:/,$realpasswd);
1886: if ($howpwd eq 'internal') {
1887: &Debug("internal auth");
1888: my $salt=time;
1889: $salt=substr($salt,6,2);
1890: my $ncpass=crypt($npass,$salt);
1891: if(&rewrite_password_file($udom, $uname, "internal:$ncpass")) {
1.428 raeburn 1892: my $msg="Result of password change for $uname: pwchange_success";
1893: if ($lonhost) {
1894: $msg .= " - request originated from: $lonhost";
1895: }
1896: &logthis($msg);
1.222 foxr 1897: &Reply($client, "ok\n", $userinput);
1898: } else {
1899: &logthis("Unable to open $uname passwd "
1900: ."to change password");
1901: &Failure( $client, "non_authorized\n",$userinput);
1902: }
1.346 raeburn 1903: } elsif ($howpwd eq 'unix' && $context ne 'reset_by_email') {
1.287 foxr 1904: my $result = &change_unix_password($uname, $npass);
1.222 foxr 1905: &logthis("Result of password change for $uname: ".
1.287 foxr 1906: $result);
1.387 albertel 1907: &Reply($client, \$result, $userinput);
1.222 foxr 1908: } else {
1909: # this just means that the current password mode is not
1910: # one we know how to change (e.g the kerberos auth modes or
1911: # locally written auth handler).
1912: #
1913: &Failure( $client, "auth_mode_error\n", $userinput);
1914: }
1915:
1.224 foxr 1916: } else {
1.428 raeburn 1917: if ($failure eq '') {
1918: $failure = 'non_authorized';
1919: }
1920: &Failure( $client, "$failure\n", $userinput);
1.222 foxr 1921: }
1922:
1923: return 1;
1924: }
1.263 albertel 1925: ®ister_handler("passwd", \&change_password_handler, 1, 1, 0);
1.222 foxr 1926:
1.225 foxr 1927: #
1928: # Create a new user. User in this case means a lon-capa user.
1929: # The user must either already exist in some authentication realm
1930: # like kerberos or the /etc/passwd. If not, a user completely local to
1931: # this loncapa system is created.
1932: #
1933: # Parameters:
1934: # $cmd - The command that got us here.
1935: # $tail - Tail of the command (remaining parameters).
1936: # $client - File descriptor connected to client.
1937: # Returns
1938: # 0 - Requested to exit, caller should shut down.
1939: # 1 - Continue processing.
1940: # Implicit inputs:
1941: # The authentication systems describe above have their own forms of implicit
1942: # input into the authentication process that are described above.
1943: sub add_user_handler {
1944:
1945: my ($cmd, $tail, $client) = @_;
1946:
1947:
1948: my ($udom,$uname,$umode,$npass)=split(/:/,$tail);
1949: my $userinput = $cmd.":".$tail; # Reconstruct the full request line.
1950:
1951: &Debug("cmd =".$cmd." $udom =".$udom." uname=".$uname);
1952:
1953:
1954: if($udom eq $currentdomainid) { # Reject new users for other domains...
1955:
1956: my $oldumask=umask(0077);
1957: chomp($npass);
1958: $npass=&unescape($npass);
1959: my $passfilename = &password_path($udom, $uname);
1960: &Debug("Password file created will be:".$passfilename);
1961: if (-e $passfilename) {
1962: &Failure( $client, "already_exists\n", $userinput);
1963: } else {
1964: my $fperror='';
1.264 albertel 1965: if (!&mkpath($passfilename)) {
1966: $fperror="error: ".($!+0)." mkdir failed while attempting "
1967: ."makeuser";
1.225 foxr 1968: }
1969: unless ($fperror) {
1970: my $result=&make_passwd_file($uname, $umode,$npass, $passfilename);
1.390 raeburn 1971: &Reply($client,\$result, $userinput); #BUGBUG - could be fail
1.225 foxr 1972: } else {
1.387 albertel 1973: &Failure($client, \$fperror, $userinput);
1.225 foxr 1974: }
1975: }
1976: umask($oldumask);
1977: } else {
1978: &Failure($client, "not_right_domain\n",
1979: $userinput); # Even if we are multihomed.
1980:
1981: }
1982: return 1;
1983:
1984: }
1985: ®ister_handler("makeuser", \&add_user_handler, 1, 1, 0);
1986:
1987: #
1988: # Change the authentication method of a user. Note that this may
1989: # also implicitly change the user's password if, for example, the user is
1990: # joining an existing authentication realm. Known authentication realms at
1991: # this time are:
1992: # internal - Purely internal password file (only loncapa knows this user)
1993: # local - Institutionally written authentication module.
1994: # unix - Unix user (/etc/passwd with or without /etc/shadow).
1995: # kerb4 - kerberos version 4
1996: # kerb5 - kerberos version 5
1997: #
1998: # Parameters:
1999: # $cmd - The command that got us here.
2000: # $tail - Tail of the command (remaining parameters).
2001: # $client - File descriptor connected to client.
2002: # Returns
2003: # 0 - Requested to exit, caller should shut down.
2004: # 1 - Continue processing.
2005: # Implicit inputs:
2006: # The authentication systems describe above have their own forms of implicit
2007: # input into the authentication process that are described above.
1.287 foxr 2008: # NOTE:
2009: # This is also used to change the authentication credential values (e.g. passwd).
2010: #
1.225 foxr 2011: #
2012: sub change_authentication_handler {
2013:
2014: my ($cmd, $tail, $client) = @_;
2015:
2016: my $userinput = "$cmd:$tail"; # Reconstruct user input.
2017:
2018: my ($udom,$uname,$umode,$npass)=split(/:/,$tail);
2019: &Debug("cmd = ".$cmd." domain= ".$udom."uname =".$uname." umode= ".$umode);
2020: if ($udom ne $currentdomainid) {
2021: &Failure( $client, "not_right_domain\n", $client);
2022: } else {
2023:
2024: chomp($npass);
2025:
2026: $npass=&unescape($npass);
1.261 foxr 2027: my $oldauth = &get_auth_type($udom, $uname); # Get old auth info.
1.225 foxr 2028: my $passfilename = &password_path($udom, $uname);
2029: if ($passfilename) { # Not allowed to create a new user!!
1.287 foxr 2030: # If just changing the unix passwd. need to arrange to run
2031: # passwd since otherwise make_passwd_file will run
2032: # lcuseradd which fails if an account already exists
2033: # (to prevent an unscrupulous LONCAPA admin from stealing
2034: # an existing account by overwriting it as a LonCAPA account).
2035:
2036: if(($oldauth =~/^unix/) && ($umode eq "unix")) {
2037: my $result = &change_unix_password($uname, $npass);
2038: &logthis("Result of password change for $uname: ".$result);
2039: if ($result eq "ok") {
1.390 raeburn 2040: &Reply($client, \$result);
1.288 albertel 2041: } else {
1.387 albertel 2042: &Failure($client, \$result);
1.287 foxr 2043: }
1.288 albertel 2044: } else {
1.287 foxr 2045: my $result=&make_passwd_file($uname, $umode,$npass,$passfilename);
2046: #
2047: # If the current auth mode is internal, and the old auth mode was
2048: # unix, or krb*, and the user is an author for this domain,
2049: # re-run manage_permissions for that role in order to be able
2050: # to take ownership of the construction space back to www:www
2051: #
2052:
2053:
2054: if( (($oldauth =~ /^unix/) && ($umode eq "internal")) ||
2055: (($oldauth =~ /^internal/) && ($umode eq "unix")) ) {
2056: if(&is_author($udom, $uname)) {
2057: &Debug(" Need to manage author permissions...");
2058: &manage_permissions("/$udom/_au", $udom, $uname, "$umode:");
2059: }
1.261 foxr 2060: }
1.387 albertel 2061: &Reply($client, \$result, $userinput);
1.261 foxr 2062: }
2063:
2064:
1.225 foxr 2065: } else {
1.251 foxr 2066: &Failure($client, "non_authorized\n", $userinput); # Fail the user now.
1.225 foxr 2067: }
2068: }
2069: return 1;
2070: }
2071: ®ister_handler("changeuserauth", \&change_authentication_handler, 1,1, 0);
2072:
2073: #
2074: # Determines if this is the home server for a user. The home server
2075: # for a user will have his/her lon-capa passwd file. Therefore all we need
2076: # to do is determine if this file exists.
2077: #
2078: # Parameters:
2079: # $cmd - The command that got us here.
2080: # $tail - Tail of the command (remaining parameters).
2081: # $client - File descriptor connected to client.
2082: # Returns
2083: # 0 - Requested to exit, caller should shut down.
2084: # 1 - Continue processing.
2085: # Implicit inputs:
2086: # The authentication systems describe above have their own forms of implicit
2087: # input into the authentication process that are described above.
2088: #
2089: sub is_home_handler {
2090: my ($cmd, $tail, $client) = @_;
2091:
2092: my $userinput = "$cmd:$tail";
2093:
2094: my ($udom,$uname)=split(/:/,$tail);
2095: chomp($uname);
2096: my $passfile = &password_filename($udom, $uname);
2097: if($passfile) {
2098: &Reply( $client, "found\n", $userinput);
2099: } else {
2100: &Failure($client, "not_found\n", $userinput);
2101: }
2102: return 1;
2103: }
2104: ®ister_handler("home", \&is_home_handler, 0,1,0);
2105:
2106: #
1.434 www 2107: # Process an update request for a resource.
2108: # A resource has been modified that we hold a subscription to.
1.225 foxr 2109: # If the resource is not local, then we must update, or at least invalidate our
2110: # cached copy of the resource.
2111: # Parameters:
2112: # $cmd - The command that got us here.
2113: # $tail - Tail of the command (remaining parameters).
2114: # $client - File descriptor connected to client.
2115: # Returns
2116: # 0 - Requested to exit, caller should shut down.
2117: # 1 - Continue processing.
2118: # Implicit inputs:
2119: # The authentication systems describe above have their own forms of implicit
2120: # input into the authentication process that are described above.
2121: #
2122: sub update_resource_handler {
2123:
2124: my ($cmd, $tail, $client) = @_;
2125:
2126: my $userinput = "$cmd:$tail";
2127:
2128: my $fname= $tail; # This allows interactive testing
2129:
2130:
2131: my $ownership=ishome($fname);
2132: if ($ownership eq 'not_owner') {
2133: if (-e $fname) {
1.434 www 2134: # Delete preview file, if exists
2135: unlink("$fname.tmp");
2136: # Get usage stats
1.225 foxr 2137: my ($dev,$ino,$mode,$nlink,$uid,$gid,$rdev,$size,
2138: $atime,$mtime,$ctime,$blksize,$blocks)=stat($fname);
2139: my $now=time;
2140: my $since=$now-$atime;
1.434 www 2141: # If the file has not been used within lonExpire seconds,
2142: # unsubscribe from it and delete local copy
1.225 foxr 2143: if ($since>$perlvar{'lonExpire'}) {
1.365 albertel 2144: my $reply=&Apache::lonnet::reply("unsub:$fname","$clientname");
1.308 albertel 2145: &devalidate_meta_cache($fname);
1.225 foxr 2146: unlink("$fname");
1.334 albertel 2147: unlink("$fname.meta");
1.225 foxr 2148: } else {
1.434 www 2149: # Yes, this is in active use. Get a fresh copy. Since it might be in
2150: # very active use and huge (like a movie), copy it to "in.transfer" filename first.
1.225 foxr 2151: my $transname="$fname.in.transfer";
1.365 albertel 2152: my $remoteurl=&Apache::lonnet::reply("sub:$fname","$clientname");
1.225 foxr 2153: my $response;
2154: alarm(120);
2155: {
2156: my $ua=new LWP::UserAgent;
2157: my $request=new HTTP::Request('GET',"$remoteurl");
2158: $response=$ua->request($request,$transname);
2159: }
2160: alarm(0);
2161: if ($response->is_error()) {
2162: unlink($transname);
2163: my $message=$response->status_line;
2164: &logthis("LWP GET: $message for $fname ($remoteurl)");
2165: } else {
2166: if ($remoteurl!~/\.meta$/) {
2167: alarm(120);
2168: {
2169: my $ua=new LWP::UserAgent;
2170: my $mrequest=new HTTP::Request('GET',$remoteurl.'.meta');
2171: my $mresponse=$ua->request($mrequest,$fname.'.meta');
2172: if ($mresponse->is_error()) {
2173: unlink($fname.'.meta');
2174: }
2175: }
2176: alarm(0);
2177: }
1.434 www 2178: # we successfully transfered, copy file over to real name
1.225 foxr 2179: rename($transname,$fname);
1.308 albertel 2180: &devalidate_meta_cache($fname);
1.225 foxr 2181: }
2182: }
2183: &Reply( $client, "ok\n", $userinput);
2184: } else {
2185: &Failure($client, "not_found\n", $userinput);
2186: }
2187: } else {
2188: &Failure($client, "rejected\n", $userinput);
2189: }
2190: return 1;
2191: }
2192: ®ister_handler("update", \&update_resource_handler, 0 ,1, 0);
2193:
1.308 albertel 2194: sub devalidate_meta_cache {
2195: my ($url) = @_;
2196: use Cache::Memcached;
2197: my $memcache = new Cache::Memcached({'servers'=>['127.0.0.1:11211']});
1.365 albertel 2198: $url = &Apache::lonnet::declutter($url);
1.308 albertel 2199: $url =~ s-\.meta$--;
2200: my $id = &escape('meta:'.$url);
2201: $memcache->delete($id);
2202: }
2203:
1.225 foxr 2204: #
1.226 foxr 2205: # Fetch a user file from a remote server to the user's home directory
2206: # userfiles subdir.
1.225 foxr 2207: # Parameters:
2208: # $cmd - The command that got us here.
2209: # $tail - Tail of the command (remaining parameters).
2210: # $client - File descriptor connected to client.
2211: # Returns
2212: # 0 - Requested to exit, caller should shut down.
2213: # 1 - Continue processing.
2214: #
2215: sub fetch_user_file_handler {
2216:
2217: my ($cmd, $tail, $client) = @_;
2218:
2219: my $userinput = "$cmd:$tail";
2220: my $fname = $tail;
1.232 foxr 2221: my ($udom,$uname,$ufile) = ($fname =~ m|^([^/]+)/([^/]+)/(.+)$|);
1.225 foxr 2222: my $udir=&propath($udom,$uname).'/userfiles';
2223: unless (-e $udir) {
2224: mkdir($udir,0770);
2225: }
1.232 foxr 2226: Debug("fetch user file for $fname");
1.225 foxr 2227: if (-e $udir) {
2228: $ufile=~s/^[\.\~]+//;
1.232 foxr 2229:
2230: # IF necessary, create the path right down to the file.
2231: # Note that any regular files in the way of this path are
2232: # wiped out to deal with some earlier folly of mine.
2233:
1.267 raeburn 2234: if (!&mkpath($udir.'/'.$ufile)) {
1.264 albertel 2235: &Failure($client, "unable_to_create\n", $userinput);
1.232 foxr 2236: }
2237:
1.225 foxr 2238: my $destname=$udir.'/'.$ufile;
2239: my $transname=$udir.'/'.$ufile.'.in.transit';
2240: my $remoteurl='http://'.$clientip.'/userfiles/'.$fname;
2241: my $response;
1.232 foxr 2242: Debug("Remote URL : $remoteurl Transfername $transname Destname: $destname");
1.225 foxr 2243: alarm(120);
2244: {
2245: my $ua=new LWP::UserAgent;
2246: my $request=new HTTP::Request('GET',"$remoteurl");
2247: $response=$ua->request($request,$transname);
2248: }
2249: alarm(0);
2250: if ($response->is_error()) {
2251: unlink($transname);
2252: my $message=$response->status_line;
2253: &logthis("LWP GET: $message for $fname ($remoteurl)");
2254: &Failure($client, "failed\n", $userinput);
2255: } else {
1.232 foxr 2256: Debug("Renaming $transname to $destname");
1.225 foxr 2257: if (!rename($transname,$destname)) {
2258: &logthis("Unable to move $transname to $destname");
2259: unlink($transname);
2260: &Failure($client, "failed\n", $userinput);
2261: } else {
2262: &Reply($client, "ok\n", $userinput);
2263: }
2264: }
2265: } else {
2266: &Failure($client, "not_home\n", $userinput);
2267: }
2268: return 1;
2269: }
2270: ®ister_handler("fetchuserfile", \&fetch_user_file_handler, 0, 1, 0);
2271:
1.226 foxr 2272: #
2273: # Remove a file from a user's home directory userfiles subdirectory.
2274: # Parameters:
2275: # cmd - the Lond request keyword that got us here.
2276: # tail - the part of the command past the keyword.
2277: # client- File descriptor connected with the client.
2278: #
2279: # Returns:
2280: # 1 - Continue processing.
2281: sub remove_user_file_handler {
2282: my ($cmd, $tail, $client) = @_;
2283:
2284: my ($fname) = split(/:/, $tail); # Get rid of any tailing :'s lonc may have sent.
2285:
2286: my ($udom,$uname,$ufile) = ($fname =~ m|^([^/]+)/([^/]+)/(.+)$|);
2287: if ($ufile =~m|/\.\./|) {
2288: # any files paths with /../ in them refuse
2289: # to deal with
2290: &Failure($client, "refused\n", "$cmd:$tail");
2291: } else {
2292: my $udir = &propath($udom,$uname);
2293: if (-e $udir) {
2294: my $file=$udir.'/userfiles/'.$ufile;
2295: if (-e $file) {
1.253 foxr 2296: #
2297: # If the file is a regular file unlink is fine...
2298: # However it's possible the client wants a dir.
2299: # removed, in which case rmdir is more approprate:
2300: #
1.240 banghart 2301: if (-f $file){
1.241 albertel 2302: unlink($file);
2303: } elsif(-d $file) {
2304: rmdir($file);
1.240 banghart 2305: }
1.226 foxr 2306: if (-e $file) {
1.253 foxr 2307: # File is still there after we deleted it ?!?
2308:
1.226 foxr 2309: &Failure($client, "failed\n", "$cmd:$tail");
2310: } else {
2311: &Reply($client, "ok\n", "$cmd:$tail");
2312: }
2313: } else {
2314: &Failure($client, "not_found\n", "$cmd:$tail");
2315: }
2316: } else {
2317: &Failure($client, "not_home\n", "$cmd:$tail");
2318: }
2319: }
2320: return 1;
2321: }
2322: ®ister_handler("removeuserfile", \&remove_user_file_handler, 0,1,0);
2323:
1.236 albertel 2324: #
2325: # make a directory in a user's home directory userfiles subdirectory.
2326: # Parameters:
2327: # cmd - the Lond request keyword that got us here.
2328: # tail - the part of the command past the keyword.
2329: # client- File descriptor connected with the client.
2330: #
2331: # Returns:
2332: # 1 - Continue processing.
2333: sub mkdir_user_file_handler {
2334: my ($cmd, $tail, $client) = @_;
2335:
2336: my ($dir) = split(/:/, $tail); # Get rid of any tailing :'s lonc may have sent.
2337: $dir=&unescape($dir);
2338: my ($udom,$uname,$ufile) = ($dir =~ m|^([^/]+)/([^/]+)/(.+)$|);
2339: if ($ufile =~m|/\.\./|) {
2340: # any files paths with /../ in them refuse
2341: # to deal with
2342: &Failure($client, "refused\n", "$cmd:$tail");
2343: } else {
2344: my $udir = &propath($udom,$uname);
2345: if (-e $udir) {
1.264 albertel 2346: my $newdir=$udir.'/userfiles/'.$ufile.'/';
2347: if (!&mkpath($newdir)) {
2348: &Failure($client, "failed\n", "$cmd:$tail");
1.236 albertel 2349: }
1.264 albertel 2350: &Reply($client, "ok\n", "$cmd:$tail");
1.236 albertel 2351: } else {
2352: &Failure($client, "not_home\n", "$cmd:$tail");
2353: }
2354: }
2355: return 1;
2356: }
2357: ®ister_handler("mkdiruserfile", \&mkdir_user_file_handler, 0,1,0);
2358:
1.237 albertel 2359: #
2360: # rename a file in a user's home directory userfiles subdirectory.
2361: # Parameters:
2362: # cmd - the Lond request keyword that got us here.
2363: # tail - the part of the command past the keyword.
2364: # client- File descriptor connected with the client.
2365: #
2366: # Returns:
2367: # 1 - Continue processing.
2368: sub rename_user_file_handler {
2369: my ($cmd, $tail, $client) = @_;
2370:
2371: my ($udom,$uname,$old,$new) = split(/:/, $tail);
2372: $old=&unescape($old);
2373: $new=&unescape($new);
2374: if ($new =~m|/\.\./| || $old =~m|/\.\./|) {
2375: # any files paths with /../ in them refuse to deal with
2376: &Failure($client, "refused\n", "$cmd:$tail");
2377: } else {
2378: my $udir = &propath($udom,$uname);
2379: if (-e $udir) {
2380: my $oldfile=$udir.'/userfiles/'.$old;
2381: my $newfile=$udir.'/userfiles/'.$new;
2382: if (-e $newfile) {
2383: &Failure($client, "exists\n", "$cmd:$tail");
2384: } elsif (! -e $oldfile) {
2385: &Failure($client, "not_found\n", "$cmd:$tail");
2386: } else {
2387: if (!rename($oldfile,$newfile)) {
2388: &Failure($client, "failed\n", "$cmd:$tail");
2389: } else {
2390: &Reply($client, "ok\n", "$cmd:$tail");
2391: }
2392: }
2393: } else {
2394: &Failure($client, "not_home\n", "$cmd:$tail");
2395: }
2396: }
2397: return 1;
2398: }
2399: ®ister_handler("renameuserfile", \&rename_user_file_handler, 0,1,0);
2400:
1.227 foxr 2401: #
1.382 albertel 2402: # Checks if the specified user has an active session on the server
2403: # return ok if so, not_found if not
2404: #
2405: # Parameters:
2406: # cmd - The request keyword that dispatched to tus.
2407: # tail - The tail of the request (colon separated parameters).
2408: # client - Filehandle open on the client.
2409: # Return:
2410: # 1.
2411: sub user_has_session_handler {
2412: my ($cmd, $tail, $client) = @_;
2413:
2414: my ($udom, $uname) = map { &unescape($_) } (split(/:/, $tail));
2415:
2416: &logthis("Looking for $udom $uname");
2417: opendir(DIR,$perlvar{'lonIDsDir'});
2418: my $filename;
2419: while ($filename=readdir(DIR)) {
2420: last if ($filename=~/^\Q$uname\E_\d+_\Q$udom\E_/);
2421: }
2422: if ($filename) {
2423: &Reply($client, "ok\n", "$cmd:$tail");
2424: } else {
2425: &Failure($client, "not_found\n", "$cmd:$tail");
2426: }
2427: return 1;
2428:
2429: }
2430: ®ister_handler("userhassession", \&user_has_session_handler, 0,1,0);
2431:
2432: #
1.263 albertel 2433: # Authenticate access to a user file by checking that the token the user's
2434: # passed also exists in their session file
1.227 foxr 2435: #
2436: # Parameters:
2437: # cmd - The request keyword that dispatched to tus.
2438: # tail - The tail of the request (colon separated parameters).
2439: # client - Filehandle open on the client.
2440: # Return:
2441: # 1.
2442: sub token_auth_user_file_handler {
2443: my ($cmd, $tail, $client) = @_;
2444:
2445: my ($fname, $session) = split(/:/, $tail);
2446:
2447: chomp($session);
1.393 raeburn 2448: my $reply="non_auth";
1.343 albertel 2449: my $file = $perlvar{'lonIDsDir'}.'/'.$session.'.id';
2450: if (open(ENVIN,"$file")) {
1.332 albertel 2451: flock(ENVIN,LOCK_SH);
1.343 albertel 2452: tie(my %disk_env,'GDBM_File',"$file",&GDBM_READER(),0640);
2453: if (exists($disk_env{"userfile.$fname"})) {
1.393 raeburn 2454: $reply="ok";
1.343 albertel 2455: } else {
2456: foreach my $envname (keys(%disk_env)) {
2457: if ($envname=~ m|^userfile\.\Q$fname\E|) {
1.393 raeburn 2458: $reply="ok";
1.343 albertel 2459: last;
2460: }
2461: }
1.227 foxr 2462: }
1.343 albertel 2463: untie(%disk_env);
1.227 foxr 2464: close(ENVIN);
1.387 albertel 2465: &Reply($client, \$reply, "$cmd:$tail");
1.227 foxr 2466: } else {
2467: &Failure($client, "invalid_token\n", "$cmd:$tail");
2468: }
2469: return 1;
2470:
2471: }
2472: ®ister_handler("tokenauthuserfile", \&token_auth_user_file_handler, 0,1,0);
1.229 foxr 2473:
2474: #
2475: # Unsubscribe from a resource.
2476: #
2477: # Parameters:
2478: # $cmd - The command that got us here.
2479: # $tail - Tail of the command (remaining parameters).
2480: # $client - File descriptor connected to client.
2481: # Returns
2482: # 0 - Requested to exit, caller should shut down.
2483: # 1 - Continue processing.
2484: #
2485: sub unsubscribe_handler {
2486: my ($cmd, $tail, $client) = @_;
2487:
2488: my $userinput= "$cmd:$tail";
2489:
2490: my ($fname) = split(/:/,$tail); # Split in case there's extrs.
2491:
2492: &Debug("Unsubscribing $fname");
2493: if (-e $fname) {
2494: &Debug("Exists");
2495: &Reply($client, &unsub($fname,$clientip), $userinput);
2496: } else {
2497: &Failure($client, "not_found\n", $userinput);
2498: }
2499: return 1;
2500: }
2501: ®ister_handler("unsub", \&unsubscribe_handler, 0, 1, 0);
1.263 albertel 2502:
1.230 foxr 2503: # Subscribe to a resource
2504: #
2505: # Parameters:
2506: # $cmd - The command that got us here.
2507: # $tail - Tail of the command (remaining parameters).
2508: # $client - File descriptor connected to client.
2509: # Returns
2510: # 0 - Requested to exit, caller should shut down.
2511: # 1 - Continue processing.
2512: #
2513: sub subscribe_handler {
2514: my ($cmd, $tail, $client)= @_;
2515:
2516: my $userinput = "$cmd:$tail";
2517:
2518: &Reply( $client, &subscribe($userinput,$clientip), $userinput);
2519:
2520: return 1;
2521: }
2522: ®ister_handler("sub", \&subscribe_handler, 0, 1, 0);
2523:
2524: #
1.379 albertel 2525: # Determine the latest version of a resource (it looks for the highest
2526: # past version and then returns that +1)
1.230 foxr 2527: #
2528: # Parameters:
2529: # $cmd - The command that got us here.
2530: # $tail - Tail of the command (remaining parameters).
1.379 albertel 2531: # (Should consist of an absolute path to a file)
1.230 foxr 2532: # $client - File descriptor connected to client.
2533: # Returns
2534: # 0 - Requested to exit, caller should shut down.
2535: # 1 - Continue processing.
2536: #
2537: sub current_version_handler {
2538: my ($cmd, $tail, $client) = @_;
2539:
2540: my $userinput= "$cmd:$tail";
2541:
2542: my $fname = $tail;
2543: &Reply( $client, ¤tversion($fname)."\n", $userinput);
2544: return 1;
2545:
2546: }
2547: ®ister_handler("currentversion", \¤t_version_handler, 0, 1, 0);
2548:
2549: # Make an entry in a user's activity log.
2550: #
2551: # Parameters:
2552: # $cmd - The command that got us here.
2553: # $tail - Tail of the command (remaining parameters).
2554: # $client - File descriptor connected to client.
2555: # Returns
2556: # 0 - Requested to exit, caller should shut down.
2557: # 1 - Continue processing.
2558: #
2559: sub activity_log_handler {
2560: my ($cmd, $tail, $client) = @_;
2561:
2562:
2563: my $userinput= "$cmd:$tail";
2564:
2565: my ($udom,$uname,$what)=split(/:/,$tail);
2566: chomp($what);
2567: my $proname=&propath($udom,$uname);
2568: my $now=time;
2569: my $hfh;
2570: if ($hfh=IO::File->new(">>$proname/activity.log")) {
2571: print $hfh "$now:$clientname:$what\n";
2572: &Reply( $client, "ok\n", $userinput);
2573: } else {
2574: &Failure($client, "error: ".($!+0)." IO::File->new Failed "
2575: ."while attempting log\n",
2576: $userinput);
2577: }
2578:
2579: return 1;
2580: }
1.263 albertel 2581: ®ister_handler("log", \&activity_log_handler, 0, 1, 0);
1.230 foxr 2582:
2583: #
2584: # Put a namespace entry in a user profile hash.
2585: # My druthers would be for this to be an encrypted interaction too.
2586: # anything that might be an inadvertent covert channel about either
2587: # user authentication or user personal information....
2588: #
2589: # Parameters:
2590: # $cmd - The command that got us here.
2591: # $tail - Tail of the command (remaining parameters).
2592: # $client - File descriptor connected to client.
2593: # Returns
2594: # 0 - Requested to exit, caller should shut down.
2595: # 1 - Continue processing.
2596: #
2597: sub put_user_profile_entry {
2598: my ($cmd, $tail, $client) = @_;
1.229 foxr 2599:
1.230 foxr 2600: my $userinput = "$cmd:$tail";
2601:
1.242 raeburn 2602: my ($udom,$uname,$namespace,$what) =split(/:/,$tail,4);
1.230 foxr 2603: if ($namespace ne 'roles') {
2604: chomp($what);
2605: my $hashref = &tie_user_hash($udom, $uname, $namespace,
2606: &GDBM_WRCREAT(),"P",$what);
2607: if($hashref) {
2608: my @pairs=split(/\&/,$what);
2609: foreach my $pair (@pairs) {
2610: my ($key,$value)=split(/=/,$pair);
2611: $hashref->{$key}=$value;
2612: }
1.311 albertel 2613: if (&untie_user_hash($hashref)) {
1.230 foxr 2614: &Reply( $client, "ok\n", $userinput);
2615: } else {
2616: &Failure($client, "error: ".($!+0)." untie(GDBM) failed ".
2617: "while attempting put\n",
2618: $userinput);
2619: }
2620: } else {
1.316 albertel 2621: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
1.230 foxr 2622: "while attempting put\n", $userinput);
2623: }
2624: } else {
2625: &Failure( $client, "refused\n", $userinput);
2626: }
2627:
2628: return 1;
2629: }
2630: ®ister_handler("put", \&put_user_profile_entry, 0, 1, 0);
2631:
1.283 albertel 2632: # Put a piece of new data in hash, returns error if entry already exists
2633: # Parameters:
2634: # $cmd - The command that got us here.
2635: # $tail - Tail of the command (remaining parameters).
2636: # $client - File descriptor connected to client.
2637: # Returns
2638: # 0 - Requested to exit, caller should shut down.
2639: # 1 - Continue processing.
2640: #
2641: sub newput_user_profile_entry {
2642: my ($cmd, $tail, $client) = @_;
2643:
2644: my $userinput = "$cmd:$tail";
2645:
2646: my ($udom,$uname,$namespace,$what) =split(/:/,$tail,4);
2647: if ($namespace eq 'roles') {
2648: &Failure( $client, "refused\n", $userinput);
2649: return 1;
2650: }
2651:
2652: chomp($what);
2653:
2654: my $hashref = &tie_user_hash($udom, $uname, $namespace,
2655: &GDBM_WRCREAT(),"N",$what);
2656: if(!$hashref) {
1.316 albertel 2657: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
1.283 albertel 2658: "while attempting put\n", $userinput);
2659: return 1;
2660: }
2661:
2662: my @pairs=split(/\&/,$what);
2663: foreach my $pair (@pairs) {
2664: my ($key,$value)=split(/=/,$pair);
2665: if (exists($hashref->{$key})) {
2666: &Failure($client, "key_exists: ".$key."\n",$userinput);
2667: return 1;
2668: }
2669: }
2670:
2671: foreach my $pair (@pairs) {
2672: my ($key,$value)=split(/=/,$pair);
2673: $hashref->{$key}=$value;
2674: }
2675:
1.311 albertel 2676: if (&untie_user_hash($hashref)) {
1.283 albertel 2677: &Reply( $client, "ok\n", $userinput);
2678: } else {
2679: &Failure($client, "error: ".($!+0)." untie(GDBM) failed ".
2680: "while attempting put\n",
2681: $userinput);
2682: }
2683: return 1;
2684: }
2685: ®ister_handler("newput", \&newput_user_profile_entry, 0, 1, 0);
2686:
1.230 foxr 2687: #
2688: # Increment a profile entry in the user history file.
2689: # The history contains keyword value pairs. In this case,
2690: # The value itself is a pair of numbers. The first, the current value
2691: # the second an increment that this function applies to the current
2692: # value.
2693: #
2694: # Parameters:
2695: # $cmd - The command that got us here.
2696: # $tail - Tail of the command (remaining parameters).
2697: # $client - File descriptor connected to client.
2698: # Returns
2699: # 0 - Requested to exit, caller should shut down.
2700: # 1 - Continue processing.
2701: #
2702: sub increment_user_value_handler {
2703: my ($cmd, $tail, $client) = @_;
2704:
2705: my $userinput = "$cmd:$tail";
2706:
2707: my ($udom,$uname,$namespace,$what) =split(/:/,$tail);
2708: if ($namespace ne 'roles') {
2709: chomp($what);
2710: my $hashref = &tie_user_hash($udom, $uname,
2711: $namespace, &GDBM_WRCREAT(),
2712: "P",$what);
2713: if ($hashref) {
2714: my @pairs=split(/\&/,$what);
2715: foreach my $pair (@pairs) {
2716: my ($key,$value)=split(/=/,$pair);
1.284 raeburn 2717: $value = &unescape($value);
1.230 foxr 2718: # We could check that we have a number...
2719: if (! defined($value) || $value eq '') {
2720: $value = 1;
2721: }
2722: $hashref->{$key}+=$value;
1.284 raeburn 2723: if ($namespace eq 'nohist_resourcetracker') {
2724: if ($hashref->{$key} < 0) {
2725: $hashref->{$key} = 0;
2726: }
2727: }
1.230 foxr 2728: }
1.311 albertel 2729: if (&untie_user_hash($hashref)) {
1.230 foxr 2730: &Reply( $client, "ok\n", $userinput);
2731: } else {
2732: &Failure($client, "error: ".($!+0)." untie(GDBM) failed ".
2733: "while attempting inc\n", $userinput);
2734: }
2735: } else {
2736: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
2737: "while attempting inc\n", $userinput);
2738: }
2739: } else {
2740: &Failure($client, "refused\n", $userinput);
2741: }
2742:
2743: return 1;
2744: }
2745: ®ister_handler("inc", \&increment_user_value_handler, 0, 1, 0);
2746:
2747: #
2748: # Put a new role for a user. Roles are LonCAPA's packaging of permissions.
2749: # Each 'role' a user has implies a set of permissions. Adding a new role
2750: # for a person grants the permissions packaged with that role
2751: # to that user when the role is selected.
2752: #
2753: # Parameters:
2754: # $cmd - The command string (rolesput).
2755: # $tail - The remainder of the request line. For rolesput this
2756: # consists of a colon separated list that contains:
2757: # The domain and user that is granting the role (logged).
2758: # The domain and user that is getting the role.
2759: # The roles being granted as a set of & separated pairs.
2760: # each pair a key value pair.
2761: # $client - File descriptor connected to the client.
2762: # Returns:
2763: # 0 - If the daemon should exit
2764: # 1 - To continue processing.
2765: #
2766: #
2767: sub roles_put_handler {
2768: my ($cmd, $tail, $client) = @_;
2769:
2770: my $userinput = "$cmd:$tail";
2771:
2772: my ( $exedom, $exeuser, $udom, $uname, $what) = split(/:/,$tail);
2773:
2774:
2775: my $namespace='roles';
2776: chomp($what);
2777: my $hashref = &tie_user_hash($udom, $uname, $namespace,
2778: &GDBM_WRCREAT(), "P",
2779: "$exedom:$exeuser:$what");
2780: #
2781: # Log the attempt to set a role. The {}'s here ensure that the file
2782: # handle is open for the minimal amount of time. Since the flush
2783: # is done on close this improves the chances the log will be an un-
2784: # corrupted ordered thing.
2785: if ($hashref) {
1.261 foxr 2786: my $pass_entry = &get_auth_type($udom, $uname);
2787: my ($auth_type,$pwd) = split(/:/, $pass_entry);
2788: $auth_type = $auth_type.":";
1.230 foxr 2789: my @pairs=split(/\&/,$what);
2790: foreach my $pair (@pairs) {
2791: my ($key,$value)=split(/=/,$pair);
2792: &manage_permissions($key, $udom, $uname,
1.260 foxr 2793: $auth_type);
1.230 foxr 2794: $hashref->{$key}=$value;
2795: }
1.311 albertel 2796: if (&untie_user_hash($hashref)) {
1.230 foxr 2797: &Reply($client, "ok\n", $userinput);
2798: } else {
2799: &Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ".
2800: "while attempting rolesput\n", $userinput);
2801: }
2802: } else {
2803: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
2804: "while attempting rolesput\n", $userinput);
2805: }
2806: return 1;
2807: }
2808: ®ister_handler("rolesput", \&roles_put_handler, 1,1,0); # Encoded client only.
2809:
2810: #
1.231 foxr 2811: # Deletes (removes) a role for a user. This is equivalent to removing
2812: # a permissions package associated with the role from the user's profile.
2813: #
2814: # Parameters:
2815: # $cmd - The command (rolesdel)
2816: # $tail - The remainder of the request line. This consists
2817: # of:
2818: # The domain and user requesting the change (logged)
2819: # The domain and user being changed.
2820: # The roles being revoked. These are shipped to us
2821: # as a bunch of & separated role name keywords.
2822: # $client - The file handle open on the client.
2823: # Returns:
2824: # 1 - Continue processing
2825: # 0 - Exit.
2826: #
2827: sub roles_delete_handler {
2828: my ($cmd, $tail, $client) = @_;
2829:
2830: my $userinput = "$cmd:$tail";
2831:
2832: my ($exedom,$exeuser,$udom,$uname,$what)=split(/:/,$tail);
2833: &Debug("cmd = ".$cmd." exedom= ".$exedom."user = ".$exeuser." udom=".$udom.
2834: "what = ".$what);
2835: my $namespace='roles';
2836: chomp($what);
2837: my $hashref = &tie_user_hash($udom, $uname, $namespace,
2838: &GDBM_WRCREAT(), "D",
2839: "$exedom:$exeuser:$what");
2840:
2841: if ($hashref) {
2842: my @rolekeys=split(/\&/,$what);
2843:
2844: foreach my $key (@rolekeys) {
2845: delete $hashref->{$key};
2846: }
1.315 albertel 2847: if (&untie_user_hash($hashref)) {
1.231 foxr 2848: &Reply($client, "ok\n", $userinput);
2849: } else {
2850: &Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ".
2851: "while attempting rolesdel\n", $userinput);
2852: }
2853: } else {
2854: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
2855: "while attempting rolesdel\n", $userinput);
2856: }
2857:
2858: return 1;
2859: }
2860: ®ister_handler("rolesdel", \&roles_delete_handler, 1,1, 0); # Encoded client only
2861:
2862: # Unencrypted get from a user's profile database. See
2863: # GetProfileEntryEncrypted for a version that does end-to-end encryption.
2864: # This function retrieves a keyed item from a specific named database in the
2865: # user's directory.
2866: #
2867: # Parameters:
2868: # $cmd - Command request keyword (get).
2869: # $tail - Tail of the command. This is a colon separated list
2870: # consisting of the domain and username that uniquely
2871: # identifies the profile,
2872: # The 'namespace' which selects the gdbm file to
2873: # do the lookup in,
2874: # & separated list of keys to lookup. Note that
2875: # the values are returned as an & separated list too.
2876: # $client - File descriptor open on the client.
2877: # Returns:
2878: # 1 - Continue processing.
2879: # 0 - Exit.
2880: #
2881: sub get_profile_entry {
2882: my ($cmd, $tail, $client) = @_;
2883:
2884: my $userinput= "$cmd:$tail";
2885:
2886: my ($udom,$uname,$namespace,$what) = split(/:/,$tail);
2887: chomp($what);
1.255 foxr 2888:
1.390 raeburn 2889:
1.255 foxr 2890: my $replystring = read_profile($udom, $uname, $namespace, $what);
2891: my ($first) = split(/:/,$replystring);
2892: if($first ne "error") {
1.387 albertel 2893: &Reply($client, \$replystring, $userinput);
1.231 foxr 2894: } else {
1.255 foxr 2895: &Failure($client, $replystring." while attempting get\n", $userinput);
1.231 foxr 2896: }
2897: return 1;
1.255 foxr 2898:
2899:
1.231 foxr 2900: }
2901: ®ister_handler("get", \&get_profile_entry, 0,1,0);
2902:
2903: #
2904: # Process the encrypted get request. Note that the request is sent
2905: # in clear, but the reply is encrypted. This is a small covert channel:
2906: # information about the sensitive keys is given to the snooper. Just not
2907: # information about the values of the sensitive key. Hmm if I wanted to
2908: # know these I'd snoop for the egets. Get the profile item names from them
2909: # and then issue a get for them since there's no enforcement of the
2910: # requirement of an encrypted get for particular profile items. If I
2911: # were re-doing this, I'd force the request to be encrypted as well as the
2912: # reply. I'd also just enforce encrypted transactions for all gets since
2913: # that would prevent any covert channel snooping.
2914: #
2915: # Parameters:
2916: # $cmd - Command keyword of request (eget).
2917: # $tail - Tail of the command. See GetProfileEntry
# for more information about this.
2918: # $client - File open on the client.
2919: # Returns:
2920: # 1 - Continue processing
2921: # 0 - server should exit.
2922: sub get_profile_entry_encrypted {
2923: my ($cmd, $tail, $client) = @_;
2924:
2925: my $userinput = "$cmd:$tail";
2926:
1.339 albertel 2927: my ($udom,$uname,$namespace,$what) = split(/:/,$tail);
1.231 foxr 2928: chomp($what);
1.255 foxr 2929: my $qresult = read_profile($udom, $uname, $namespace, $what);
2930: my ($first) = split(/:/, $qresult);
2931: if($first ne "error") {
2932:
2933: if ($cipher) {
2934: my $cmdlength=length($qresult);
2935: $qresult.=" ";
2936: my $encqresult='';
2937: for(my $encidx=0;$encidx<=$cmdlength;$encidx+=8) {
2938: $encqresult.= unpack("H16",
2939: $cipher->encrypt(substr($qresult,
2940: $encidx,
2941: 8)));
2942: }
2943: &Reply( $client, "enc:$cmdlength:$encqresult\n", $userinput);
2944: } else {
1.231 foxr 2945: &Failure( $client, "error:no_key\n", $userinput);
2946: }
2947: } else {
1.255 foxr 2948: &Failure($client, "$qresult while attempting eget\n", $userinput);
2949:
1.231 foxr 2950: }
2951:
2952: return 1;
2953: }
1.255 foxr 2954: ®ister_handler("eget", \&get_profile_entry_encrypted, 0, 1, 0);
1.263 albertel 2955:
1.231 foxr 2956: #
2957: # Deletes a key in a user profile database.
2958: #
2959: # Parameters:
2960: # $cmd - Command keyword (del).
2961: # $tail - Command tail. IN this case a colon
2962: # separated list containing:
2963: # The domain and user that identifies uniquely
2964: # the identity of the user.
2965: # The profile namespace (name of the profile
2966: # database file).
2967: # & separated list of keywords to delete.
2968: # $client - File open on client socket.
2969: # Returns:
2970: # 1 - Continue processing
2971: # 0 - Exit server.
2972: #
2973: #
2974: sub delete_profile_entry {
2975: my ($cmd, $tail, $client) = @_;
2976:
2977: my $userinput = "cmd:$tail";
2978:
2979: my ($udom,$uname,$namespace,$what) = split(/:/,$tail);
2980: chomp($what);
2981: my $hashref = &tie_user_hash($udom, $uname, $namespace,
2982: &GDBM_WRCREAT(),
2983: "D",$what);
2984: if ($hashref) {
2985: my @keys=split(/\&/,$what);
2986: foreach my $key (@keys) {
2987: delete($hashref->{$key});
2988: }
1.315 albertel 2989: if (&untie_user_hash($hashref)) {
1.231 foxr 2990: &Reply($client, "ok\n", $userinput);
2991: } else {
2992: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
2993: "while attempting del\n", $userinput);
2994: }
2995: } else {
2996: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
2997: "while attempting del\n", $userinput);
2998: }
2999: return 1;
3000: }
3001: ®ister_handler("del", \&delete_profile_entry, 0, 1, 0);
1.263 albertel 3002:
1.231 foxr 3003: #
3004: # List the set of keys that are defined in a profile database file.
3005: # A successful reply from this will contain an & separated list of
3006: # the keys.
3007: # Parameters:
3008: # $cmd - Command request (keys).
3009: # $tail - Remainder of the request, a colon separated
3010: # list containing domain/user that identifies the
3011: # user being queried, and the database namespace
3012: # (database filename essentially).
3013: # $client - File open on the client.
3014: # Returns:
3015: # 1 - Continue processing.
3016: # 0 - Exit the server.
3017: #
3018: sub get_profile_keys {
3019: my ($cmd, $tail, $client) = @_;
3020:
3021: my $userinput = "$cmd:$tail";
3022:
3023: my ($udom,$uname,$namespace)=split(/:/,$tail);
3024: my $qresult='';
3025: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3026: &GDBM_READER());
3027: if ($hashref) {
3028: foreach my $key (keys %$hashref) {
3029: $qresult.="$key&";
3030: }
1.315 albertel 3031: if (&untie_user_hash($hashref)) {
1.231 foxr 3032: $qresult=~s/\&$//;
1.387 albertel 3033: &Reply($client, \$qresult, $userinput);
1.231 foxr 3034: } else {
3035: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
3036: "while attempting keys\n", $userinput);
3037: }
3038: } else {
3039: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
3040: "while attempting keys\n", $userinput);
3041: }
3042:
3043: return 1;
3044: }
3045: ®ister_handler("keys", \&get_profile_keys, 0, 1, 0);
3046:
3047: #
3048: # Dump the contents of a user profile database.
3049: # Note that this constitutes a very large covert channel too since
3050: # the dump will return sensitive information that is not encrypted.
3051: # The naive security assumption is that the session negotiation ensures
3052: # our client is trusted and I don't believe that's assured at present.
3053: # Sure want badly to go to ssl or tls. Of course if my peer isn't really
3054: # a LonCAPA node they could have negotiated an encryption key too so >sigh<.
3055: #
3056: # Parameters:
3057: # $cmd - The command request keyword (currentdump).
3058: # $tail - Remainder of the request, consisting of a colon
3059: # separated list that has the domain/username and
3060: # the namespace to dump (database file).
3061: # $client - file open on the remote client.
3062: # Returns:
3063: # 1 - Continue processing.
3064: # 0 - Exit the server.
3065: #
3066: sub dump_profile_database {
3067: my ($cmd, $tail, $client) = @_;
3068:
3069: my $userinput = "$cmd:$tail";
3070:
3071: my ($udom,$uname,$namespace) = split(/:/,$tail);
3072: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3073: &GDBM_READER());
3074: if ($hashref) {
3075: # Structure of %data:
3076: # $data{$symb}->{$parameter}=$value;
3077: # $data{$symb}->{'v.'.$parameter}=$version;
3078: # since $parameter will be unescaped, we do not
3079: # have to worry about silly parameter names...
3080:
3081: my $qresult='';
3082: my %data = (); # A hash of anonymous hashes..
3083: while (my ($key,$value) = each(%$hashref)) {
3084: my ($v,$symb,$param) = split(/:/,$key);
3085: next if ($v eq 'version' || $symb eq 'keys');
3086: next if (exists($data{$symb}) &&
3087: exists($data{$symb}->{$param}) &&
3088: $data{$symb}->{'v.'.$param} > $v);
3089: $data{$symb}->{$param}=$value;
3090: $data{$symb}->{'v.'.$param}=$v;
3091: }
1.311 albertel 3092: if (&untie_user_hash($hashref)) {
1.231 foxr 3093: while (my ($symb,$param_hash) = each(%data)) {
3094: while(my ($param,$value) = each (%$param_hash)){
3095: next if ($param =~ /^v\./); # Ignore versions...
3096: #
3097: # Just dump the symb=value pairs separated by &
3098: #
3099: $qresult.=$symb.':'.$param.'='.$value.'&';
3100: }
3101: }
3102: chop($qresult);
1.387 albertel 3103: &Reply($client , \$qresult, $userinput);
1.231 foxr 3104: } else {
3105: &Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ".
3106: "while attempting currentdump\n", $userinput);
3107: }
3108: } else {
3109: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
3110: "while attempting currentdump\n", $userinput);
3111: }
3112:
3113: return 1;
3114: }
3115: ®ister_handler("currentdump", \&dump_profile_database, 0, 1, 0);
3116:
3117: #
3118: # Dump a profile database with an optional regular expression
3119: # to match against the keys. In this dump, no effort is made
3120: # to separate symb from version information. Presumably the
3121: # databases that are dumped by this command are of a different
3122: # structure. Need to look at this and improve the documentation of
3123: # both this and the currentdump handler.
3124: # Parameters:
3125: # $cmd - The command keyword.
3126: # $tail - All of the characters after the $cmd:
3127: # These are expected to be a colon
3128: # separated list containing:
3129: # domain/user - identifying the user.
3130: # namespace - identifying the database.
3131: # regexp - optional regular expression
3132: # that is matched against
3133: # database keywords to do
3134: # selective dumps.
3135: # $client - Channel open on the client.
3136: # Returns:
3137: # 1 - Continue processing.
3138: # Side effects:
3139: # response is written to $client.
3140: #
3141: sub dump_with_regexp {
3142: my ($cmd, $tail, $client) = @_;
3143:
3144:
3145: my $userinput = "$cmd:$tail";
3146:
1.306 albertel 3147: my ($udom,$uname,$namespace,$regexp,$range)=split(/:/,$tail);
1.231 foxr 3148: if (defined($regexp)) {
3149: $regexp=&unescape($regexp);
3150: } else {
3151: $regexp='.';
3152: }
1.306 albertel 3153: my ($start,$end);
3154: if (defined($range)) {
3155: if ($range =~/^(\d+)\-(\d+)$/) {
3156: ($start,$end) = ($1,$2);
3157: } elsif ($range =~/^(\d+)$/) {
3158: ($start,$end) = (0,$1);
3159: } else {
3160: undef($range);
3161: }
3162: }
1.231 foxr 3163: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3164: &GDBM_READER());
3165: if ($hashref) {
3166: my $qresult='';
1.306 albertel 3167: my $count=0;
1.231 foxr 3168: while (my ($key,$value) = each(%$hashref)) {
1.432 raeburn 3169: if ($namespace eq 'roles') {
1.446 raeburn 3170: if ($key =~ m{^/($LONCAPA::match_domain)/($LONCAPA::match_community)_(cc|co|in|ta|ep|ad|st|cr)}) {
3171: my $cdom = $1;
3172: my $cnum = $2;
1.447 raeburn 3173: if ($clientversion =~ /^\'?(\d+)\.(\d+)/) {
1.433 raeburn 3174: my $major = $1;
3175: my $minor = $2;
1.435 raeburn 3176: next if (($major < 2) || (($major == 2) && ($minor < 9)));
1.446 raeburn 3177: } else {
3178: my $homeserver = &Apache::lonnet::homeserver($cnum,$cdom);
3179: next unless ($currenthostid eq $homeserver);
1.432 raeburn 3180: }
3181: }
3182: }
1.231 foxr 3183: if ($regexp eq '.') {
1.306 albertel 3184: $count++;
3185: if (defined($range) && $count >= $end) { last; }
3186: if (defined($range) && $count < $start) { next; }
1.231 foxr 3187: $qresult.=$key.'='.$value.'&';
3188: } else {
3189: my $unescapeKey = &unescape($key);
3190: if (eval('$unescapeKey=~/$regexp/')) {
1.306 albertel 3191: $count++;
3192: if (defined($range) && $count >= $end) { last; }
3193: if (defined($range) && $count < $start) { next; }
1.231 foxr 3194: $qresult.="$key=$value&";
3195: }
3196: }
3197: }
1.311 albertel 3198: if (&untie_user_hash($hashref)) {
1.231 foxr 3199: chop($qresult);
1.387 albertel 3200: &Reply($client, \$qresult, $userinput);
1.231 foxr 3201: } else {
3202: &Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ".
3203: "while attempting dump\n", $userinput);
3204: }
3205: } else {
3206: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
3207: "while attempting dump\n", $userinput);
3208: }
3209:
3210: return 1;
3211: }
3212: ®ister_handler("dump", \&dump_with_regexp, 0, 1, 0);
3213:
3214: # Store a set of key=value pairs associated with a versioned name.
3215: #
3216: # Parameters:
3217: # $cmd - Request command keyword.
3218: # $tail - Tail of the request. This is a colon
3219: # separated list containing:
3220: # domain/user - User and authentication domain.
3221: # namespace - Name of the database being modified
3222: # rid - Resource keyword to modify.
3223: # what - new value associated with rid.
3224: #
3225: # $client - Socket open on the client.
3226: #
3227: #
3228: # Returns:
3229: # 1 (keep on processing).
3230: # Side-Effects:
3231: # Writes to the client
3232: sub store_handler {
3233: my ($cmd, $tail, $client) = @_;
3234:
3235: my $userinput = "$cmd:$tail";
3236:
3237: my ($udom,$uname,$namespace,$rid,$what) =split(/:/,$tail);
3238: if ($namespace ne 'roles') {
3239:
3240: chomp($what);
3241: my @pairs=split(/\&/,$what);
3242: my $hashref = &tie_user_hash($udom, $uname, $namespace,
1.268 albertel 3243: &GDBM_WRCREAT(), "S",
1.231 foxr 3244: "$rid:$what");
3245: if ($hashref) {
3246: my $now = time;
3247: my @previouskeys=split(/&/,$hashref->{"keys:$rid"});
3248: my $key;
3249: $hashref->{"version:$rid"}++;
3250: my $version=$hashref->{"version:$rid"};
3251: my $allkeys='';
3252: foreach my $pair (@pairs) {
3253: my ($key,$value)=split(/=/,$pair);
3254: $allkeys.=$key.':';
3255: $hashref->{"$version:$rid:$key"}=$value;
3256: }
3257: $hashref->{"$version:$rid:timestamp"}=$now;
3258: $allkeys.='timestamp';
3259: $hashref->{"$version:keys:$rid"}=$allkeys;
1.311 albertel 3260: if (&untie_user_hash($hashref)) {
1.231 foxr 3261: &Reply($client, "ok\n", $userinput);
3262: } else {
3263: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
3264: "while attempting store\n", $userinput);
3265: }
3266: } else {
3267: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
3268: "while attempting store\n", $userinput);
3269: }
3270: } else {
3271: &Failure($client, "refused\n", $userinput);
3272: }
3273:
3274: return 1;
3275: }
3276: ®ister_handler("store", \&store_handler, 0, 1, 0);
1.263 albertel 3277:
1.323 albertel 3278: # Modify a set of key=value pairs associated with a versioned name.
3279: #
3280: # Parameters:
3281: # $cmd - Request command keyword.
3282: # $tail - Tail of the request. This is a colon
3283: # separated list containing:
3284: # domain/user - User and authentication domain.
3285: # namespace - Name of the database being modified
3286: # rid - Resource keyword to modify.
3287: # v - Version item to modify
3288: # what - new value associated with rid.
3289: #
3290: # $client - Socket open on the client.
3291: #
3292: #
3293: # Returns:
3294: # 1 (keep on processing).
3295: # Side-Effects:
3296: # Writes to the client
3297: sub putstore_handler {
3298: my ($cmd, $tail, $client) = @_;
3299:
3300: my $userinput = "$cmd:$tail";
3301:
3302: my ($udom,$uname,$namespace,$rid,$v,$what) =split(/:/,$tail);
3303: if ($namespace ne 'roles') {
3304:
3305: chomp($what);
3306: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3307: &GDBM_WRCREAT(), "M",
3308: "$rid:$v:$what");
3309: if ($hashref) {
3310: my $now = time;
3311: my %data = &hash_extract($what);
3312: my @allkeys;
3313: while (my($key,$value) = each(%data)) {
3314: push(@allkeys,$key);
3315: $hashref->{"$v:$rid:$key"} = $value;
3316: }
3317: my $allkeys = join(':',@allkeys);
3318: $hashref->{"$v:keys:$rid"}=$allkeys;
3319:
3320: if (&untie_user_hash($hashref)) {
3321: &Reply($client, "ok\n", $userinput);
3322: } else {
3323: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
3324: "while attempting store\n", $userinput);
3325: }
3326: } else {
3327: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
3328: "while attempting store\n", $userinput);
3329: }
3330: } else {
3331: &Failure($client, "refused\n", $userinput);
3332: }
3333:
3334: return 1;
3335: }
3336: ®ister_handler("putstore", \&putstore_handler, 0, 1, 0);
3337:
3338: sub hash_extract {
3339: my ($str)=@_;
3340: my %hash;
3341: foreach my $pair (split(/\&/,$str)) {
3342: my ($key,$value)=split(/=/,$pair);
3343: $hash{$key}=$value;
3344: }
3345: return (%hash);
3346: }
3347: sub hash_to_str {
3348: my ($hash_ref)=@_;
3349: my $str;
3350: foreach my $key (keys(%$hash_ref)) {
3351: $str.=$key.'='.$hash_ref->{$key}.'&';
3352: }
3353: $str=~s/\&$//;
3354: return $str;
3355: }
3356:
1.231 foxr 3357: #
3358: # Dump out all versions of a resource that has key=value pairs associated
3359: # with it for each version. These resources are built up via the store
3360: # command.
3361: #
3362: # Parameters:
3363: # $cmd - Command keyword.
3364: # $tail - Remainder of the request which consists of:
3365: # domain/user - User and auth. domain.
3366: # namespace - name of resource database.
3367: # rid - Resource id.
3368: # $client - socket open on the client.
3369: #
3370: # Returns:
3371: # 1 indicating the caller should not yet exit.
3372: # Side-effects:
3373: # Writes a reply to the client.
3374: # The reply is a string of the following shape:
3375: # version=current&version:keys=k1:k2...&1:k1=v1&1:k2=v2...
3376: # Where the 1 above represents version 1.
3377: # this continues for all pairs of keys in all versions.
3378: #
3379: #
3380: #
3381: #
3382: sub restore_handler {
3383: my ($cmd, $tail, $client) = @_;
3384:
3385: my $userinput = "$cmd:$tail"; # Only used for logging purposes.
1.351 banghart 3386: my ($udom,$uname,$namespace,$rid) = split(/:/,$tail);
1.352 albertel 3387: $namespace=~s/\//\_/g;
1.350 albertel 3388: $namespace = &LONCAPA::clean_username($namespace);
1.349 albertel 3389:
1.231 foxr 3390: chomp($rid);
3391: my $qresult='';
1.309 albertel 3392: my $hashref = &tie_user_hash($udom, $uname, $namespace, &GDBM_READER());
3393: if ($hashref) {
3394: my $version=$hashref->{"version:$rid"};
1.231 foxr 3395: $qresult.="version=$version&";
3396: my $scope;
3397: for ($scope=1;$scope<=$version;$scope++) {
1.309 albertel 3398: my $vkeys=$hashref->{"$scope:keys:$rid"};
1.231 foxr 3399: my @keys=split(/:/,$vkeys);
3400: my $key;
3401: $qresult.="$scope:keys=$vkeys&";
3402: foreach $key (@keys) {
1.309 albertel 3403: $qresult.="$scope:$key=".$hashref->{"$scope:$rid:$key"}."&";
1.231 foxr 3404: }
3405: }
1.311 albertel 3406: if (&untie_user_hash($hashref)) {
1.231 foxr 3407: $qresult=~s/\&$//;
1.387 albertel 3408: &Reply( $client, \$qresult, $userinput);
1.231 foxr 3409: } else {
3410: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
3411: "while attempting restore\n", $userinput);
3412: }
3413: } else {
3414: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
3415: "while attempting restore\n", $userinput);
3416: }
3417:
3418: return 1;
3419:
3420:
3421: }
3422: ®ister_handler("restore", \&restore_handler, 0,1,0);
1.234 foxr 3423:
3424: #
1.324 raeburn 3425: # Add a chat message to a synchronous discussion board.
1.234 foxr 3426: #
3427: # Parameters:
3428: # $cmd - Request keyword.
3429: # $tail - Tail of the command. A colon separated list
3430: # containing:
3431: # cdom - Domain on which the chat board lives
1.324 raeburn 3432: # cnum - Course containing the chat board.
3433: # newpost - Body of the posting.
3434: # group - Optional group, if chat board is only
3435: # accessible in a group within the course
1.234 foxr 3436: # $client - Socket open on the client.
3437: # Returns:
3438: # 1 - Indicating caller should keep on processing.
3439: #
3440: # Side-effects:
3441: # writes a reply to the client.
3442: #
3443: #
3444: sub send_chat_handler {
3445: my ($cmd, $tail, $client) = @_;
3446:
3447:
3448: my $userinput = "$cmd:$tail";
3449:
1.324 raeburn 3450: my ($cdom,$cnum,$newpost,$group)=split(/\:/,$tail);
3451: &chat_add($cdom,$cnum,$newpost,$group);
1.234 foxr 3452: &Reply($client, "ok\n", $userinput);
3453:
3454: return 1;
3455: }
3456: ®ister_handler("chatsend", \&send_chat_handler, 0, 1, 0);
1.263 albertel 3457:
1.234 foxr 3458: #
1.324 raeburn 3459: # Retrieve the set of chat messages from a discussion board.
1.234 foxr 3460: #
3461: # Parameters:
3462: # $cmd - Command keyword that initiated the request.
3463: # $tail - Remainder of the request after the command
3464: # keyword. In this case a colon separated list of
3465: # chat domain - Which discussion board.
3466: # chat id - Discussion thread(?)
3467: # domain/user - Authentication domain and username
3468: # of the requesting person.
1.324 raeburn 3469: # group - Optional course group containing
3470: # the board.
1.234 foxr 3471: # $client - Socket open on the client program.
3472: # Returns:
3473: # 1 - continue processing
3474: # Side effects:
3475: # Response is written to the client.
3476: #
3477: sub retrieve_chat_handler {
3478: my ($cmd, $tail, $client) = @_;
3479:
3480:
3481: my $userinput = "$cmd:$tail";
3482:
1.324 raeburn 3483: my ($cdom,$cnum,$udom,$uname,$group)=split(/\:/,$tail);
1.234 foxr 3484: my $reply='';
1.324 raeburn 3485: foreach (&get_chat($cdom,$cnum,$udom,$uname,$group)) {
1.234 foxr 3486: $reply.=&escape($_).':';
3487: }
3488: $reply=~s/\:$//;
1.387 albertel 3489: &Reply($client, \$reply, $userinput);
1.234 foxr 3490:
3491:
3492: return 1;
3493: }
3494: ®ister_handler("chatretr", \&retrieve_chat_handler, 0, 1, 0);
3495:
3496: #
3497: # Initiate a query of an sql database. SQL query repsonses get put in
3498: # a file for later retrieval. This prevents sql query results from
3499: # bottlenecking the system. Note that with loncnew, perhaps this is
3500: # less of an issue since multiple outstanding requests can be concurrently
3501: # serviced.
3502: #
3503: # Parameters:
3504: # $cmd - COmmand keyword that initiated the request.
3505: # $tail - Remainder of the command after the keyword.
3506: # For this function, this consists of a query and
3507: # 3 arguments that are self-documentingly labelled
3508: # in the original arg1, arg2, arg3.
3509: # $client - Socket open on the client.
3510: # Return:
3511: # 1 - Indicating processing should continue.
3512: # Side-effects:
3513: # a reply is written to $client.
3514: #
3515: sub send_query_handler {
3516: my ($cmd, $tail, $client) = @_;
3517:
3518:
3519: my $userinput = "$cmd:$tail";
3520:
3521: my ($query,$arg1,$arg2,$arg3)=split(/\:/,$tail);
3522: $query=~s/\n*$//g;
3523: &Reply($client, "". &sql_reply("$clientname\&$query".
3524: "\&$arg1"."\&$arg2"."\&$arg3")."\n",
3525: $userinput);
3526:
3527: return 1;
3528: }
3529: ®ister_handler("querysend", \&send_query_handler, 0, 1, 0);
3530:
3531: #
3532: # Add a reply to an sql query. SQL queries are done asyncrhonously.
3533: # The query is submitted via a "querysend" transaction.
3534: # There it is passed on to the lonsql daemon, queued and issued to
3535: # mysql.
3536: # This transaction is invoked when the sql transaction is complete
3537: # it stores the query results in flie and indicates query completion.
3538: # presumably local software then fetches this response... I'm guessing
3539: # the sequence is: lonc does a querysend, we ask lonsql to do it.
3540: # lonsql on completion of the query interacts with the lond of our
3541: # client to do a query reply storing two files:
3542: # - id - The results of the query.
3543: # - id.end - Indicating the transaction completed.
3544: # NOTE: id is a unique id assigned to the query and querysend time.
3545: # Parameters:
3546: # $cmd - Command keyword that initiated this request.
3547: # $tail - Remainder of the tail. In this case that's a colon
3548: # separated list containing the query Id and the
3549: # results of the query.
3550: # $client - Socket open on the client.
3551: # Return:
3552: # 1 - Indicating that we should continue processing.
3553: # Side effects:
3554: # ok written to the client.
3555: #
3556: sub reply_query_handler {
3557: my ($cmd, $tail, $client) = @_;
3558:
3559:
3560: my $userinput = "$cmd:$tail";
3561:
1.339 albertel 3562: my ($id,$reply)=split(/:/,$tail);
1.234 foxr 3563: my $store;
3564: my $execdir=$perlvar{'lonDaemons'};
3565: if ($store=IO::File->new(">$execdir/tmp/$id")) {
3566: $reply=~s/\&/\n/g;
3567: print $store $reply;
3568: close $store;
3569: my $store2=IO::File->new(">$execdir/tmp/$id.end");
3570: print $store2 "done\n";
3571: close $store2;
3572: &Reply($client, "ok\n", $userinput);
3573: } else {
3574: &Failure($client, "error: ".($!+0)
3575: ." IO::File->new Failed ".
3576: "while attempting queryreply\n", $userinput);
3577: }
3578:
3579:
3580: return 1;
3581: }
3582: ®ister_handler("queryreply", \&reply_query_handler, 0, 1, 0);
3583:
3584: #
3585: # Process the courseidput request. Not quite sure what this means
3586: # at the system level sense. It appears a gdbm file in the
3587: # /home/httpd/lonUsers/$domain/nohist_courseids is tied and
3588: # a set of entries made in that database.
3589: #
3590: # Parameters:
3591: # $cmd - The command keyword that initiated this request.
3592: # $tail - Tail of the command. In this case consists of a colon
3593: # separated list contaning the domain to apply this to and
3594: # an ampersand separated list of keyword=value pairs.
1.272 raeburn 3595: # Each value is a colon separated list that includes:
3596: # description, institutional code and course owner.
3597: # For backward compatibility with versions included
3598: # in LON-CAPA 1.1.X (and earlier) and 1.2.X, institutional
3599: # code and/or course owner are preserved from the existing
3600: # record when writing a new record in response to 1.1 or
3601: # 1.2 implementations of lonnet::flushcourselogs().
3602: #
1.234 foxr 3603: # $client - Socket open on the client.
3604: # Returns:
3605: # 1 - indicating that processing should continue
3606: #
3607: # Side effects:
3608: # reply is written to the client.
3609: #
3610: sub put_course_id_handler {
3611: my ($cmd, $tail, $client) = @_;
3612:
3613:
3614: my $userinput = "$cmd:$tail";
3615:
1.266 raeburn 3616: my ($udom, $what) = split(/:/, $tail,2);
1.234 foxr 3617: chomp($what);
3618: my $now=time;
3619: my @pairs=split(/\&/,$what);
3620:
3621: my $hashref = &tie_domain_hash($udom, "nohist_courseids", &GDBM_WRCREAT());
3622: if ($hashref) {
3623: foreach my $pair (@pairs) {
1.271 raeburn 3624: my ($key,$courseinfo) = split(/=/,$pair,2);
3625: $courseinfo =~ s/=/:/g;
1.384 raeburn 3626: if (defined($hashref->{$key})) {
3627: my $value = &Apache::lonnet::thaw_unescape($hashref->{$key});
3628: if (ref($value) eq 'HASH') {
3629: my @items = ('description','inst_code','owner','type');
3630: my @new_items = split(/:/,$courseinfo,-1);
3631: my %storehash;
3632: for (my $i=0; $i<@new_items; $i++) {
1.391 raeburn 3633: $storehash{$items[$i]} = &unescape($new_items[$i]);
1.384 raeburn 3634: }
3635: $hashref->{$key} =
3636: &Apache::lonnet::freeze_escape(\%storehash);
3637: my $unesc_key = &unescape($key);
3638: $hashref->{&escape('lasttime:'.$unesc_key)} = $now;
3639: next;
1.383 raeburn 3640: }
1.384 raeburn 3641: }
3642: my @current_items = split(/:/,$hashref->{$key},-1);
3643: shift(@current_items); # remove description
3644: pop(@current_items); # remove last access
3645: my $numcurrent = scalar(@current_items);
3646: if ($numcurrent > 3) {
3647: $numcurrent = 3;
3648: }
3649: my @new_items = split(/:/,$courseinfo,-1);
3650: my $numnew = scalar(@new_items);
3651: if ($numcurrent > 0) {
3652: if ($numnew <= $numcurrent) { # flushcourselogs() from pre 2.2
3653: for (my $j=$numcurrent-$numnew; $j>=0; $j--) {
3654: $courseinfo .= ':'.$current_items[$numcurrent-$j-1];
1.333 raeburn 3655: }
1.272 raeburn 3656: }
3657: }
1.384 raeburn 3658: $hashref->{$key}=$courseinfo.':'.$now;
1.234 foxr 3659: }
1.311 albertel 3660: if (&untie_domain_hash($hashref)) {
1.253 foxr 3661: &Reply( $client, "ok\n", $userinput);
1.234 foxr 3662: } else {
1.253 foxr 3663: &Failure($client, "error: ".($!+0)
1.234 foxr 3664: ." untie(GDBM) Failed ".
3665: "while attempting courseidput\n", $userinput);
3666: }
3667: } else {
1.253 foxr 3668: &Failure($client, "error: ".($!+0)
1.234 foxr 3669: ." tie(GDBM) Failed ".
3670: "while attempting courseidput\n", $userinput);
3671: }
3672:
3673: return 1;
3674: }
3675: ®ister_handler("courseidput", \&put_course_id_handler, 0, 1, 0);
3676:
1.383 raeburn 3677: sub put_course_id_hash_handler {
3678: my ($cmd, $tail, $client) = @_;
3679: my $userinput = "$cmd:$tail";
1.384 raeburn 3680: my ($udom,$mode,$what) = split(/:/, $tail,3);
1.383 raeburn 3681: chomp($what);
3682: my $now=time;
3683: my @pairs=split(/\&/,$what);
1.384 raeburn 3684: my $hashref = &tie_domain_hash($udom, "nohist_courseids", &GDBM_WRCREAT());
1.383 raeburn 3685: if ($hashref) {
3686: foreach my $pair (@pairs) {
3687: my ($key,$value)=split(/=/,$pair);
1.384 raeburn 3688: my $unesc_key = &unescape($key);
3689: if ($mode ne 'timeonly') {
3690: if (!defined($hashref->{&escape('lasttime:'.$unesc_key)})) {
3691: my $curritems = &Apache::lonnet::thaw_unescape($key);
3692: if (ref($curritems) ne 'HASH') {
3693: my @current_items = split(/:/,$hashref->{$key},-1);
3694: my $lasttime = pop(@current_items);
3695: $hashref->{&escape('lasttime:'.$unesc_key)} = $lasttime;
3696: } else {
3697: $hashref->{&escape('lasttime:'.$unesc_key)} = '';
3698: }
3699: }
3700: $hashref->{$key} = $value;
3701: }
3702: if ($mode ne 'notime') {
3703: $hashref->{&escape('lasttime:'.$unesc_key)} = $now;
3704: }
1.383 raeburn 3705: }
3706: if (&untie_domain_hash($hashref)) {
3707: &Reply($client, "ok\n", $userinput);
3708: } else {
3709: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
3710: "while attempting courseidputhash\n", $userinput);
3711: }
3712: } else {
3713: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
3714: "while attempting courseidputhash\n", $userinput);
3715: }
3716: return 1;
3717: }
3718: ®ister_handler("courseidputhash", \&put_course_id_hash_handler, 0, 1, 0);
3719:
1.234 foxr 3720: # Retrieves the value of a course id resource keyword pattern
3721: # defined since a starting date. Both the starting date and the
3722: # keyword pattern are optional. If the starting date is not supplied it
3723: # is treated as the beginning of time. If the pattern is not found,
3724: # it is treatred as "." matching everything.
3725: #
3726: # Parameters:
3727: # $cmd - Command keyword that resulted in us being dispatched.
3728: # $tail - The remainder of the command that, in this case, consists
3729: # of a colon separated list of:
3730: # domain - The domain in which the course database is
3731: # defined.
3732: # since - Optional parameter describing the minimum
3733: # time of definition(?) of the resources that
3734: # will match the dump.
3735: # description - regular expression that is used to filter
3736: # the dump. Only keywords matching this regexp
3737: # will be used.
1.272 raeburn 3738: # institutional code - optional supplied code to filter
3739: # the dump. Only courses with an institutional code
3740: # that match the supplied code will be returned.
1.336 raeburn 3741: # owner - optional supplied username and domain of owner to
3742: # filter the dump. Only courses for which the course
3743: # owner matches the supplied username and/or domain
3744: # will be returned. Pre-2.2.0 legacy entries from
3745: # nohist_courseiddump will only contain usernames.
1.384 raeburn 3746: # type - optional parameter for selection
1.418 raeburn 3747: # regexp_ok - if 1 or -1 allow the supplied institutional code
3748: # filter to behave as a regular expression:
3749: # 1 will not exclude the course if the instcode matches the RE
3750: # -1 will exclude the course if the instcode matches the RE
1.384 raeburn 3751: # rtn_as_hash - whether to return the information available for
3752: # each matched item as a frozen hash of all
3753: # key, value pairs in the item's hash, or as a
3754: # colon-separated list of (in order) description,
3755: # institutional code, and course owner.
1.404 raeburn 3756: # selfenrollonly - filter by courses allowing self-enrollment
3757: # now or in the future (selfenrollonly = 1).
3758: # catfilter - filter by course category, assigned to a course
3759: # using manually defined categories (i.e., not
1.407 raeburn 3760: # self-cataloging based on on institutional code).
1.404 raeburn 3761: # showhidden - include course in results even if course
1.407 raeburn 3762: # was set to be excluded from course catalog (DC only).
1.404 raeburn 3763: # caller - if set to 'coursecatalog', courses set to be hidden
3764: # from course catalog will be excluded from results (unless
3765: # overridden by "showhidden".
1.427 raeburn 3766: # cloner - escaped username:domain of course cloner (if picking course to
1.419 raeburn 3767: # clone).
3768: # cc_clone_list - escaped comma separated list of courses for which
3769: # course cloner has active CC role (and so can clone
3770: # automatically).
1.427 raeburn 3771: # cloneonly - filter by courses for which cloner has rights to clone.
3772: # createdbefore - include courses for which creation date preceeded this date.
3773: # createdafter - include courses for which creation date followed this date.
3774: # creationcontext - include courses created in specified context
1.404 raeburn 3775: #
1.445 raeburn 3776: # domcloner - flag to indicate if user can create CCs in course's domain.
3777: # If so, ability to clone course is automatic.
3778: #
1.234 foxr 3779: # $client - The socket open on the client.
3780: # Returns:
3781: # 1 - Continue processing.
3782: # Side Effects:
3783: # a reply is written to $client.
3784: sub dump_course_id_handler {
3785: my ($cmd, $tail, $client) = @_;
3786: my $userinput = "$cmd:$tail";
3787:
1.333 raeburn 3788: my ($udom,$since,$description,$instcodefilter,$ownerfilter,$coursefilter,
1.404 raeburn 3789: $typefilter,$regexp_ok,$rtn_as_hash,$selfenrollonly,$catfilter,$showhidden,
1.427 raeburn 3790: $caller,$cloner,$cc_clone_list,$cloneonly,$createdbefore,$createdafter,
1.445 raeburn 3791: $creationcontext,$domcloner) =split(/:/,$tail);
1.397 raeburn 3792: my $now = time;
1.419 raeburn 3793: my ($cloneruname,$clonerudom,%cc_clone);
1.234 foxr 3794: if (defined($description)) {
3795: $description=&unescape($description);
3796: } else {
3797: $description='.';
3798: }
1.266 raeburn 3799: if (defined($instcodefilter)) {
3800: $instcodefilter=&unescape($instcodefilter);
3801: } else {
3802: $instcodefilter='.';
3803: }
1.336 raeburn 3804: my ($ownerunamefilter,$ownerdomfilter);
1.266 raeburn 3805: if (defined($ownerfilter)) {
3806: $ownerfilter=&unescape($ownerfilter);
1.336 raeburn 3807: if ($ownerfilter ne '.' && defined($ownerfilter)) {
3808: if ($ownerfilter =~ /^([^:]*):([^:]*)$/) {
3809: $ownerunamefilter = $1;
3810: $ownerdomfilter = $2;
3811: } else {
3812: $ownerunamefilter = $ownerfilter;
3813: $ownerdomfilter = '';
3814: }
3815: }
1.266 raeburn 3816: } else {
3817: $ownerfilter='.';
3818: }
1.336 raeburn 3819:
1.282 raeburn 3820: if (defined($coursefilter)) {
3821: $coursefilter=&unescape($coursefilter);
3822: } else {
3823: $coursefilter='.';
3824: }
1.333 raeburn 3825: if (defined($typefilter)) {
3826: $typefilter=&unescape($typefilter);
3827: } else {
3828: $typefilter='.';
3829: }
1.344 raeburn 3830: if (defined($regexp_ok)) {
3831: $regexp_ok=&unescape($regexp_ok);
3832: }
1.401 raeburn 3833: if (defined($catfilter)) {
3834: $catfilter=&unescape($catfilter);
3835: }
1.419 raeburn 3836: if (defined($cloner)) {
3837: $cloner = &unescape($cloner);
3838: ($cloneruname,$clonerudom) = ($cloner =~ /^($LONCAPA::match_username):($LONCAPA::match_domain)$/);
3839: }
3840: if (defined($cc_clone_list)) {
3841: $cc_clone_list = &unescape($cc_clone_list);
3842: my @cc_cloners = split('&',$cc_clone_list);
3843: foreach my $cid (@cc_cloners) {
3844: my ($clonedom,$clonenum) = split(':',$cid);
3845: next if ($clonedom ne $udom);
3846: $cc_clone{$clonedom.'_'.$clonenum} = 1;
3847: }
3848: }
1.431 raeburn 3849: if ($createdbefore ne '') {
1.427 raeburn 3850: $createdbefore = &unescape($createdbefore);
3851: } else {
3852: $createdbefore = 0;
3853: }
1.431 raeburn 3854: if ($createdafter ne '') {
1.427 raeburn 3855: $createdafter = &unescape($createdafter);
3856: } else {
3857: $createdafter = 0;
3858: }
1.431 raeburn 3859: if ($creationcontext ne '') {
1.427 raeburn 3860: $creationcontext = &unescape($creationcontext);
3861: } else {
3862: $creationcontext = '.';
3863: }
1.384 raeburn 3864: my $unpack = 1;
3865: if ($description eq '.' && $instcodefilter eq '.' && $coursefilter eq '.' &&
3866: $typefilter eq '.') {
3867: $unpack = 0;
3868: }
3869: if (!defined($since)) { $since=0; }
1.234 foxr 3870: my $qresult='';
3871: my $hashref = &tie_domain_hash($udom, "nohist_courseids", &GDBM_WRCREAT());
3872: if ($hashref) {
1.384 raeburn 3873: while (my ($key,$value) = each(%$hashref)) {
1.397 raeburn 3874: my ($unesc_key,$lasttime_key,$lasttime,$is_hash,%val,
1.427 raeburn 3875: %unesc_val,$selfenroll_end,$selfenroll_types,$created,
3876: $context);
1.384 raeburn 3877: $unesc_key = &unescape($key);
3878: if ($unesc_key =~ /^lasttime:/) {
3879: next;
3880: } else {
3881: $lasttime_key = &escape('lasttime:'.$unesc_key);
3882: }
3883: if ($hashref->{$lasttime_key} ne '') {
3884: $lasttime = $hashref->{$lasttime_key};
3885: next if ($lasttime<$since);
3886: }
1.419 raeburn 3887: my ($canclone,$valchange);
1.384 raeburn 3888: my $items = &Apache::lonnet::thaw_unescape($value);
3889: if (ref($items) eq 'HASH') {
1.429 raeburn 3890: if ($hashref->{$lasttime_key} eq '') {
1.430 raeburn 3891: next if ($since > 1);
1.429 raeburn 3892: }
1.384 raeburn 3893: $is_hash = 1;
1.445 raeburn 3894: if ($domcloner) {
3895: $canclone = 1;
3896: } elsif (defined($clonerudom)) {
1.419 raeburn 3897: if ($items->{'cloners'}) {
3898: my @cloneable = split(',',$items->{'cloners'});
3899: if (@cloneable) {
3900: if (grep(/^\*$/,@cloneable)) {
3901: $canclone = 1;
3902: } elsif (grep(/^\*:\Q$clonerudom\E$/,@cloneable)) {
3903: $canclone = 1;
3904: } elsif (grep(/^\Q$cloneruname\E:\Q$clonerudom\E$/,@cloneable)) {
3905: $canclone = 1;
3906: }
3907: }
3908: unless ($canclone) {
3909: if ($cloneruname ne '' && $clonerudom ne '') {
3910: if ($cc_clone{$unesc_key}) {
3911: $canclone = 1;
3912: $items->{'cloners'} .= ','.$cloneruname.':'.
3913: $clonerudom;
3914: $valchange = 1;
3915: }
3916: }
3917: }
3918: } elsif (defined($cloneruname)) {
3919: if ($cc_clone{$unesc_key}) {
3920: $canclone = 1;
3921: $items->{'cloners'} = $cloneruname.':'.$clonerudom;
3922: $valchange = 1;
3923: }
1.437 raeburn 3924: unless ($canclone) {
3925: if ($items->{'owner'} =~ /:/) {
3926: if ($items->{'owner'} eq $cloner) {
3927: $canclone = 1;
3928: }
1.444 raeburn 3929: } elsif ($cloner eq $items->{'owner'}.':'.$udom) {
1.437 raeburn 3930: $canclone = 1;
3931: }
3932: if ($canclone) {
3933: $items->{'cloners'} = $cloneruname.':'.$clonerudom;
3934: $valchange = 1;
3935: }
3936: }
1.419 raeburn 3937: }
3938: }
1.384 raeburn 3939: if ($unpack || !$rtn_as_hash) {
3940: $unesc_val{'descr'} = $items->{'description'};
3941: $unesc_val{'inst_code'} = $items->{'inst_code'};
3942: $unesc_val{'owner'} = $items->{'owner'};
3943: $unesc_val{'type'} = $items->{'type'};
1.419 raeburn 3944: $unesc_val{'cloners'} = $items->{'cloners'};
1.427 raeburn 3945: $unesc_val{'created'} = $items->{'created'};
3946: $unesc_val{'context'} = $items->{'context'};
1.404 raeburn 3947: }
3948: $selfenroll_types = $items->{'selfenroll_types'};
3949: $selfenroll_end = $items->{'selfenroll_end_date'};
1.427 raeburn 3950: $created = $items->{'created'};
3951: $context = $items->{'context'};
1.404 raeburn 3952: if ($selfenrollonly) {
3953: next if (!$selfenroll_types);
3954: if (($selfenroll_end > 0) && ($selfenroll_end <= $now)) {
3955: next;
1.397 raeburn 3956: }
1.404 raeburn 3957: }
1.427 raeburn 3958: if ($creationcontext ne '.') {
3959: next if (($context ne '') && ($context ne $creationcontext));
3960: }
3961: if ($createdbefore > 0) {
3962: next if (($created eq '') || ($created > $createdbefore));
3963: }
3964: if ($createdafter > 0) {
3965: next if (($created eq '') || ($created <= $createdafter));
3966: }
1.404 raeburn 3967: if ($catfilter ne '') {
1.406 raeburn 3968: next if ($items->{'categories'} eq '');
3969: my @categories = split('&',$items->{'categories'});
1.407 raeburn 3970: next if (@categories == 0);
3971: my @subcats = split('&',$catfilter);
3972: my $matchcat = 0;
3973: foreach my $cat (@categories) {
3974: if (grep(/^\Q$cat\E$/,@subcats)) {
3975: $matchcat = 1;
3976: last;
3977: }
3978: }
3979: next if (!$matchcat);
1.404 raeburn 3980: }
3981: if ($caller eq 'coursecatalog') {
1.405 raeburn 3982: if ($items->{'hidefromcat'} eq 'yes') {
3983: next if !$showhidden;
1.401 raeburn 3984: }
1.384 raeburn 3985: }
1.383 raeburn 3986: } else {
1.401 raeburn 3987: next if ($catfilter ne '');
1.419 raeburn 3988: next if ($selfenrollonly);
1.427 raeburn 3989: next if ($createdbefore || $createdafter);
3990: next if ($creationcontext ne '.');
1.419 raeburn 3991: if ((defined($clonerudom)) && (defined($cloneruname))) {
3992: if ($cc_clone{$unesc_key}) {
3993: $canclone = 1;
3994: $val{'cloners'} = &escape($cloneruname.':'.$clonerudom);
3995: }
3996: }
1.384 raeburn 3997: $is_hash = 0;
1.388 raeburn 3998: my @courseitems = split(/:/,$value);
1.403 raeburn 3999: $lasttime = pop(@courseitems);
1.402 raeburn 4000: if ($hashref->{$lasttime_key} eq '') {
4001: next if ($lasttime<$since);
4002: }
1.384 raeburn 4003: ($val{'descr'},$val{'inst_code'},$val{'owner'},$val{'type'}) = @courseitems;
1.383 raeburn 4004: }
1.419 raeburn 4005: if ($cloneonly) {
4006: next unless ($canclone);
4007: }
1.266 raeburn 4008: my $match = 1;
1.384 raeburn 4009: if ($description ne '.') {
4010: if (!$is_hash) {
4011: $unesc_val{'descr'} = &unescape($val{'descr'});
4012: }
4013: if (eval{$unesc_val{'descr'} !~ /\Q$description\E/i}) {
1.266 raeburn 4014: $match = 0;
1.384 raeburn 4015: }
1.266 raeburn 4016: }
1.384 raeburn 4017: if ($instcodefilter ne '.') {
4018: if (!$is_hash) {
4019: $unesc_val{'inst_code'} = &unescape($val{'inst_code'});
4020: }
1.418 raeburn 4021: if ($regexp_ok == 1) {
1.384 raeburn 4022: if (eval{$unesc_val{'inst_code'} !~ /$instcodefilter/}) {
1.344 raeburn 4023: $match = 0;
4024: }
1.418 raeburn 4025: } elsif ($regexp_ok == -1) {
4026: if (eval{$unesc_val{'inst_code'} =~ /$instcodefilter/}) {
4027: $match = 0;
4028: }
1.344 raeburn 4029: } else {
1.384 raeburn 4030: if (eval{$unesc_val{'inst_code'} !~ /\Q$instcodefilter\E/i}) {
1.344 raeburn 4031: $match = 0;
4032: }
1.266 raeburn 4033: }
1.234 foxr 4034: }
1.384 raeburn 4035: if ($ownerfilter ne '.') {
4036: if (!$is_hash) {
4037: $unesc_val{'owner'} = &unescape($val{'owner'});
4038: }
1.336 raeburn 4039: if (($ownerunamefilter ne '') && ($ownerdomfilter ne '')) {
1.384 raeburn 4040: if ($unesc_val{'owner'} =~ /:/) {
4041: if (eval{$unesc_val{'owner'} !~
4042: /\Q$ownerunamefilter\E:\Q$ownerdomfilter\E$/i}) {
1.336 raeburn 4043: $match = 0;
4044: }
4045: } else {
1.384 raeburn 4046: if (eval{$unesc_val{'owner'} !~ /\Q$ownerunamefilter\E/i}) {
1.336 raeburn 4047: $match = 0;
4048: }
4049: }
4050: } elsif ($ownerunamefilter ne '') {
1.384 raeburn 4051: if ($unesc_val{'owner'} =~ /:/) {
4052: if (eval{$unesc_val{'owner'} !~ /\Q$ownerunamefilter\E:[^:]+$/i}) {
1.336 raeburn 4053: $match = 0;
4054: }
4055: } else {
1.384 raeburn 4056: if (eval{$unesc_val{'owner'} !~ /\Q$ownerunamefilter\E/i}) {
1.336 raeburn 4057: $match = 0;
4058: }
4059: }
4060: } elsif ($ownerdomfilter ne '') {
1.384 raeburn 4061: if ($unesc_val{'owner'} =~ /:/) {
4062: if (eval{$unesc_val{'owner'} !~ /^[^:]+:\Q$ownerdomfilter\E/}) {
1.336 raeburn 4063: $match = 0;
4064: }
4065: } else {
4066: if ($ownerdomfilter ne $udom) {
4067: $match = 0;
4068: }
4069: }
1.266 raeburn 4070: }
4071: }
1.384 raeburn 4072: if ($coursefilter ne '.') {
4073: if (eval{$unesc_key !~ /^$udom(_)\Q$coursefilter\E$/}) {
1.282 raeburn 4074: $match = 0;
4075: }
4076: }
1.384 raeburn 4077: if ($typefilter ne '.') {
4078: if (!$is_hash) {
4079: $unesc_val{'type'} = &unescape($val{'type'});
4080: }
4081: if ($unesc_val{'type'} eq '') {
1.333 raeburn 4082: if ($typefilter ne 'Course') {
4083: $match = 0;
4084: }
1.383 raeburn 4085: } else {
1.384 raeburn 4086: if (eval{$unesc_val{'type'} !~ /^\Q$typefilter\E$/}) {
1.333 raeburn 4087: $match = 0;
4088: }
4089: }
4090: }
1.266 raeburn 4091: if ($match == 1) {
1.384 raeburn 4092: if ($rtn_as_hash) {
4093: if ($is_hash) {
1.419 raeburn 4094: if ($valchange) {
4095: my $newvalue = &Apache::lonnet::freeze_escape($items);
4096: $qresult.=$key.'='.$newvalue.'&';
4097: } else {
4098: $qresult.=$key.'='.$value.'&';
4099: }
1.384 raeburn 4100: } else {
1.388 raeburn 4101: my %rtnhash = ( 'description' => &unescape($val{'descr'}),
4102: 'inst_code' => &unescape($val{'inst_code'}),
4103: 'owner' => &unescape($val{'owner'}),
4104: 'type' => &unescape($val{'type'}),
1.419 raeburn 4105: 'cloners' => &unescape($val{'cloners'}),
1.384 raeburn 4106: );
4107: my $items = &Apache::lonnet::freeze_escape(\%rtnhash);
4108: $qresult.=$key.'='.$items.'&';
4109: }
1.383 raeburn 4110: } else {
1.384 raeburn 4111: if ($is_hash) {
4112: $qresult .= $key.'='.&escape($unesc_val{'descr'}).':'.
4113: &escape($unesc_val{'inst_code'}).':'.
4114: &escape($unesc_val{'owner'}).'&';
4115: } else {
4116: $qresult .= $key.'='.$val{'descr'}.':'.$val{'inst_code'}.
4117: ':'.$val{'owner'}.'&';
4118: }
1.383 raeburn 4119: }
1.266 raeburn 4120: }
1.234 foxr 4121: }
1.311 albertel 4122: if (&untie_domain_hash($hashref)) {
1.234 foxr 4123: chop($qresult);
1.387 albertel 4124: &Reply($client, \$qresult, $userinput);
1.234 foxr 4125: } else {
4126: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4127: "while attempting courseiddump\n", $userinput);
4128: }
4129: } else {
4130: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
4131: "while attempting courseiddump\n", $userinput);
4132: }
4133: return 1;
4134: }
4135: ®ister_handler("courseiddump", \&dump_course_id_handler, 0, 1, 0);
1.238 foxr 4136:
1.438 raeburn 4137: sub course_lastaccess_handler {
4138: my ($cmd, $tail, $client) = @_;
4139: my $userinput = "$cmd:$tail";
4140: my ($cdom,$cnum) = split(':',$tail);
4141: my (%lastaccess,$qresult);
4142: my $hashref = &tie_domain_hash($cdom, "nohist_courseids", &GDBM_WRCREAT());
4143: if ($hashref) {
4144: while (my ($key,$value) = each(%$hashref)) {
4145: my ($unesc_key,$lasttime);
4146: $unesc_key = &unescape($key);
4147: if ($cnum) {
4148: next unless ($unesc_key =~ /\Q$cdom\E_\Q$cnum\E$/);
4149: }
4150: if ($unesc_key =~ /^lasttime:($LONCAPA::match_domain\_$LONCAPA::match_courseid)/) {
4151: $lastaccess{$1} = $value;
4152: } else {
4153: my $items = &Apache::lonnet::thaw_unescape($value);
4154: if (ref($items) eq 'HASH') {
4155: unless ($lastaccess{$unesc_key}) {
4156: $lastaccess{$unesc_key} = '';
4157: }
4158: } else {
4159: my @courseitems = split(':',$value);
4160: $lastaccess{$unesc_key} = pop(@courseitems);
4161: }
4162: }
4163: }
4164: foreach my $cid (sort(keys(%lastaccess))) {
4165: $qresult.=&escape($cid).'='.$lastaccess{$cid}.'&';
4166: }
4167: if (&untie_domain_hash($hashref)) {
4168: if ($qresult) {
4169: chop($qresult);
4170: }
4171: &Reply($client, \$qresult, $userinput);
4172: } else {
4173: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4174: "while attempting lastacourseaccess\n", $userinput);
4175: }
4176: } else {
4177: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
4178: "while attempting lastcourseaccess\n", $userinput);
4179: }
4180: return 1;
4181: }
4182: ®ister_handler("courselastaccess",\&course_lastaccess_handler, 0, 1, 0);
4183:
1.238 foxr 4184: #
1.348 raeburn 4185: # Puts an unencrypted entry in a namespace db file at the domain level
4186: #
4187: # Parameters:
4188: # $cmd - The command that got us here.
4189: # $tail - Tail of the command (remaining parameters).
4190: # $client - File descriptor connected to client.
4191: # Returns
4192: # 0 - Requested to exit, caller should shut down.
4193: # 1 - Continue processing.
4194: # Side effects:
4195: # reply is written to $client.
4196: #
4197: sub put_domain_handler {
4198: my ($cmd,$tail,$client) = @_;
4199:
4200: my $userinput = "$cmd:$tail";
4201:
4202: my ($udom,$namespace,$what) =split(/:/,$tail,3);
4203: chomp($what);
4204: my @pairs=split(/\&/,$what);
4205: my $hashref = &tie_domain_hash($udom, "$namespace", &GDBM_WRCREAT(),
4206: "P", $what);
4207: if ($hashref) {
4208: foreach my $pair (@pairs) {
4209: my ($key,$value)=split(/=/,$pair);
4210: $hashref->{$key}=$value;
4211: }
4212: if (&untie_domain_hash($hashref)) {
4213: &Reply($client, "ok\n", $userinput);
4214: } else {
4215: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4216: "while attempting putdom\n", $userinput);
4217: }
4218: } else {
4219: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
4220: "while attempting putdom\n", $userinput);
4221: }
4222:
4223: return 1;
4224: }
4225: ®ister_handler("putdom", \&put_domain_handler, 0, 1, 0);
4226:
4227: # Unencrypted get from the namespace database file at the domain level.
4228: # This function retrieves a keyed item from a specific named database in the
4229: # domain directory.
4230: #
4231: # Parameters:
4232: # $cmd - Command request keyword (get).
4233: # $tail - Tail of the command. This is a colon separated list
4234: # consisting of the domain and the 'namespace'
4235: # which selects the gdbm file to do the lookup in,
4236: # & separated list of keys to lookup. Note that
4237: # the values are returned as an & separated list too.
4238: # $client - File descriptor open on the client.
4239: # Returns:
4240: # 1 - Continue processing.
4241: # 0 - Exit.
4242: # Side effects:
4243: # reply is written to $client.
4244: #
4245:
4246: sub get_domain_handler {
4247: my ($cmd, $tail, $client) = @_;
4248:
4249: my $userinput = "$client:$tail";
4250:
4251: my ($udom,$namespace,$what)=split(/:/,$tail,3);
4252: chomp($what);
4253: my @queries=split(/\&/,$what);
4254: my $qresult='';
4255: my $hashref = &tie_domain_hash($udom, "$namespace", &GDBM_READER());
4256: if ($hashref) {
4257: for (my $i=0;$i<=$#queries;$i++) {
4258: $qresult.="$hashref->{$queries[$i]}&";
4259: }
4260: if (&untie_domain_hash($hashref)) {
4261: $qresult=~s/\&$//;
1.387 albertel 4262: &Reply($client, \$qresult, $userinput);
1.348 raeburn 4263: } else {
4264: &Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ".
4265: "while attempting getdom\n",$userinput);
4266: }
4267: } else {
4268: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
4269: "while attempting getdom\n",$userinput);
4270: }
4271:
4272: return 1;
4273: }
1.360 raeburn 4274: ®ister_handler("getdom", \&get_domain_handler, 0, 1, 0);
1.348 raeburn 4275:
1.420 raeburn 4276: #
1.238 foxr 4277: # Puts an id to a domains id database.
4278: #
4279: # Parameters:
4280: # $cmd - The command that triggered us.
4281: # $tail - Remainder of the request other than the command. This is a
4282: # colon separated list containing:
4283: # $domain - The domain for which we are writing the id.
4284: # $pairs - The id info to write... this is and & separated list
4285: # of keyword=value.
4286: # $client - Socket open on the client.
4287: # Returns:
4288: # 1 - Continue processing.
4289: # Side effects:
4290: # reply is written to $client.
4291: #
4292: sub put_id_handler {
4293: my ($cmd,$tail,$client) = @_;
4294:
4295:
4296: my $userinput = "$cmd:$tail";
4297:
4298: my ($udom,$what)=split(/:/,$tail);
4299: chomp($what);
4300: my @pairs=split(/\&/,$what);
4301: my $hashref = &tie_domain_hash($udom, "ids", &GDBM_WRCREAT(),
4302: "P", $what);
4303: if ($hashref) {
4304: foreach my $pair (@pairs) {
4305: my ($key,$value)=split(/=/,$pair);
4306: $hashref->{$key}=$value;
4307: }
1.311 albertel 4308: if (&untie_domain_hash($hashref)) {
1.238 foxr 4309: &Reply($client, "ok\n", $userinput);
4310: } else {
4311: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4312: "while attempting idput\n", $userinput);
4313: }
4314: } else {
4315: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
4316: "while attempting idput\n", $userinput);
4317: }
4318:
4319: return 1;
4320: }
1.263 albertel 4321: ®ister_handler("idput", \&put_id_handler, 0, 1, 0);
1.238 foxr 4322:
4323: #
4324: # Retrieves a set of id values from the id database.
4325: # Returns an & separated list of results, one for each requested id to the
4326: # client.
4327: #
4328: # Parameters:
4329: # $cmd - Command keyword that caused us to be dispatched.
4330: # $tail - Tail of the command. Consists of a colon separated:
4331: # domain - the domain whose id table we dump
4332: # ids Consists of an & separated list of
4333: # id keywords whose values will be fetched.
4334: # nonexisting keywords will have an empty value.
4335: # $client - Socket open on the client.
4336: #
4337: # Returns:
4338: # 1 - indicating processing should continue.
4339: # Side effects:
4340: # An & separated list of results is written to $client.
4341: #
4342: sub get_id_handler {
4343: my ($cmd, $tail, $client) = @_;
4344:
4345:
4346: my $userinput = "$client:$tail";
4347:
4348: my ($udom,$what)=split(/:/,$tail);
4349: chomp($what);
4350: my @queries=split(/\&/,$what);
4351: my $qresult='';
4352: my $hashref = &tie_domain_hash($udom, "ids", &GDBM_READER());
4353: if ($hashref) {
4354: for (my $i=0;$i<=$#queries;$i++) {
4355: $qresult.="$hashref->{$queries[$i]}&";
4356: }
1.311 albertel 4357: if (&untie_domain_hash($hashref)) {
1.238 foxr 4358: $qresult=~s/\&$//;
1.387 albertel 4359: &Reply($client, \$qresult, $userinput);
1.238 foxr 4360: } else {
4361: &Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ".
4362: "while attempting idget\n",$userinput);
4363: }
4364: } else {
4365: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
4366: "while attempting idget\n",$userinput);
4367: }
4368:
4369: return 1;
4370: }
1.263 albertel 4371: ®ister_handler("idget", \&get_id_handler, 0, 1, 0);
1.238 foxr 4372:
4373: #
1.299 raeburn 4374: # Puts broadcast e-mail sent by Domain Coordinator in nohist_dcmail database
4375: #
4376: # Parameters
4377: # $cmd - Command keyword that caused us to be dispatched.
4378: # $tail - Tail of the command. Consists of a colon separated:
4379: # domain - the domain whose dcmail we are recording
4380: # email Consists of key=value pair
4381: # where key is unique msgid
4382: # and value is message (in XML)
4383: # $client - Socket open on the client.
4384: #
4385: # Returns:
4386: # 1 - indicating processing should continue.
4387: # Side effects
4388: # reply is written to $client.
4389: #
4390: sub put_dcmail_handler {
4391: my ($cmd,$tail,$client) = @_;
4392: my $userinput = "$cmd:$tail";
4393:
4394: my ($udom,$what)=split(/:/,$tail);
4395: chomp($what);
4396: my $hashref = &tie_domain_hash($udom, "nohist_dcmail", &GDBM_WRCREAT());
4397: if ($hashref) {
4398: my ($key,$value)=split(/=/,$what);
4399: $hashref->{$key}=$value;
4400: }
1.311 albertel 4401: if (&untie_domain_hash($hashref)) {
1.299 raeburn 4402: &Reply($client, "ok\n", $userinput);
4403: } else {
4404: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4405: "while attempting dcmailput\n", $userinput);
4406: }
4407: return 1;
4408: }
4409: ®ister_handler("dcmailput", \&put_dcmail_handler, 0, 1, 0);
4410:
4411: #
4412: # Retrieves broadcast e-mail from nohist_dcmail database
4413: # Returns to client an & separated list of key=value pairs,
4414: # where key is msgid and value is message information.
4415: #
4416: # Parameters
4417: # $cmd - Command keyword that caused us to be dispatched.
4418: # $tail - Tail of the command. Consists of a colon separated:
4419: # domain - the domain whose dcmail table we dump
4420: # startfilter - beginning of time window
4421: # endfilter - end of time window
4422: # sendersfilter - & separated list of username:domain
4423: # for senders to search for.
4424: # $client - Socket open on the client.
4425: #
4426: # Returns:
4427: # 1 - indicating processing should continue.
4428: # Side effects
4429: # reply (& separated list of msgid=messageinfo pairs) is
4430: # written to $client.
4431: #
4432: sub dump_dcmail_handler {
4433: my ($cmd, $tail, $client) = @_;
4434:
4435: my $userinput = "$cmd:$tail";
4436: my ($udom,$startfilter,$endfilter,$sendersfilter) = split(/:/,$tail);
4437: chomp($sendersfilter);
4438: my @senders = ();
4439: if (defined($startfilter)) {
4440: $startfilter=&unescape($startfilter);
4441: } else {
4442: $startfilter='.';
4443: }
4444: if (defined($endfilter)) {
4445: $endfilter=&unescape($endfilter);
4446: } else {
4447: $endfilter='.';
4448: }
4449: if (defined($sendersfilter)) {
4450: $sendersfilter=&unescape($sendersfilter);
1.300 albertel 4451: @senders = map { &unescape($_) } split(/\&/,$sendersfilter);
1.299 raeburn 4452: }
4453:
4454: my $qresult='';
4455: my $hashref = &tie_domain_hash($udom, "nohist_dcmail", &GDBM_WRCREAT());
4456: if ($hashref) {
4457: while (my ($key,$value) = each(%$hashref)) {
4458: my $match = 1;
1.303 albertel 4459: my ($timestamp,$subj,$uname,$udom) =
4460: split(/:/,&unescape(&unescape($key)),5); # yes, twice really
1.299 raeburn 4461: $subj = &unescape($subj);
4462: unless ($startfilter eq '.' || !defined($startfilter)) {
4463: if ($timestamp < $startfilter) {
4464: $match = 0;
4465: }
4466: }
4467: unless ($endfilter eq '.' || !defined($endfilter)) {
4468: if ($timestamp > $endfilter) {
4469: $match = 0;
4470: }
4471: }
4472: unless (@senders < 1) {
4473: unless (grep/^$uname:$udom$/,@senders) {
4474: $match = 0;
4475: }
4476: }
4477: if ($match == 1) {
4478: $qresult.=$key.'='.$value.'&';
4479: }
4480: }
1.311 albertel 4481: if (&untie_domain_hash($hashref)) {
1.299 raeburn 4482: chop($qresult);
1.387 albertel 4483: &Reply($client, \$qresult, $userinput);
1.299 raeburn 4484: } else {
4485: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4486: "while attempting dcmaildump\n", $userinput);
4487: }
4488: } else {
4489: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
4490: "while attempting dcmaildump\n", $userinput);
4491: }
4492: return 1;
4493: }
4494:
4495: ®ister_handler("dcmaildump", \&dump_dcmail_handler, 0, 1, 0);
4496:
4497: #
4498: # Puts domain roles in nohist_domainroles database
4499: #
4500: # Parameters
4501: # $cmd - Command keyword that caused us to be dispatched.
4502: # $tail - Tail of the command. Consists of a colon separated:
4503: # domain - the domain whose roles we are recording
4504: # role - Consists of key=value pair
4505: # where key is unique role
4506: # and value is start/end date information
4507: # $client - Socket open on the client.
4508: #
4509: # Returns:
4510: # 1 - indicating processing should continue.
4511: # Side effects
4512: # reply is written to $client.
4513: #
4514:
4515: sub put_domainroles_handler {
4516: my ($cmd,$tail,$client) = @_;
4517:
4518: my $userinput = "$cmd:$tail";
4519: my ($udom,$what)=split(/:/,$tail);
4520: chomp($what);
4521: my @pairs=split(/\&/,$what);
4522: my $hashref = &tie_domain_hash($udom, "nohist_domainroles", &GDBM_WRCREAT());
4523: if ($hashref) {
4524: foreach my $pair (@pairs) {
4525: my ($key,$value)=split(/=/,$pair);
4526: $hashref->{$key}=$value;
4527: }
1.311 albertel 4528: if (&untie_domain_hash($hashref)) {
1.299 raeburn 4529: &Reply($client, "ok\n", $userinput);
4530: } else {
4531: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4532: "while attempting domroleput\n", $userinput);
4533: }
4534: } else {
4535: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
4536: "while attempting domroleput\n", $userinput);
4537: }
4538:
4539: return 1;
4540: }
4541:
4542: ®ister_handler("domroleput", \&put_domainroles_handler, 0, 1, 0);
4543:
4544: #
4545: # Retrieves domain roles from nohist_domainroles database
4546: # Returns to client an & separated list of key=value pairs,
4547: # where key is role and value is start and end date information.
4548: #
4549: # Parameters
4550: # $cmd - Command keyword that caused us to be dispatched.
4551: # $tail - Tail of the command. Consists of a colon separated:
4552: # domain - the domain whose domain roles table we dump
4553: # $client - Socket open on the client.
4554: #
4555: # Returns:
4556: # 1 - indicating processing should continue.
4557: # Side effects
4558: # reply (& separated list of role=start/end info pairs) is
4559: # written to $client.
4560: #
4561: sub dump_domainroles_handler {
4562: my ($cmd, $tail, $client) = @_;
4563:
4564: my $userinput = "$cmd:$tail";
4565: my ($udom,$startfilter,$endfilter,$rolesfilter) = split(/:/,$tail);
4566: chomp($rolesfilter);
4567: my @roles = ();
4568: if (defined($startfilter)) {
4569: $startfilter=&unescape($startfilter);
4570: } else {
4571: $startfilter='.';
4572: }
4573: if (defined($endfilter)) {
4574: $endfilter=&unescape($endfilter);
4575: } else {
4576: $endfilter='.';
4577: }
4578: if (defined($rolesfilter)) {
4579: $rolesfilter=&unescape($rolesfilter);
1.300 albertel 4580: @roles = split(/\&/,$rolesfilter);
1.299 raeburn 4581: }
1.421 raeburn 4582:
1.299 raeburn 4583: my $hashref = &tie_domain_hash($udom, "nohist_domainroles", &GDBM_WRCREAT());
4584: if ($hashref) {
4585: my $qresult = '';
4586: while (my ($key,$value) = each(%$hashref)) {
4587: my $match = 1;
1.421 raeburn 4588: my ($end,$start) = split(/:/,&unescape($value));
1.299 raeburn 4589: my ($trole,$uname,$udom,$runame,$rudom,$rsec) = split(/:/,&unescape($key));
1.421 raeburn 4590: unless (@roles < 1) {
4591: unless (grep/^\Q$trole\E$/,@roles) {
4592: $match = 0;
4593: next;
4594: }
4595: }
1.299 raeburn 4596: unless ($startfilter eq '.' || !defined($startfilter)) {
1.415 raeburn 4597: if ((defined($start)) && ($start >= $startfilter)) {
1.299 raeburn 4598: $match = 0;
1.421 raeburn 4599: next;
1.299 raeburn 4600: }
4601: }
4602: unless ($endfilter eq '.' || !defined($endfilter)) {
1.421 raeburn 4603: if ((defined($end)) && (($end > 0) && ($end <= $endfilter))) {
1.299 raeburn 4604: $match = 0;
1.421 raeburn 4605: next;
1.299 raeburn 4606: }
4607: }
4608: if ($match == 1) {
4609: $qresult.=$key.'='.$value.'&';
4610: }
4611: }
1.311 albertel 4612: if (&untie_domain_hash($hashref)) {
1.299 raeburn 4613: chop($qresult);
1.387 albertel 4614: &Reply($client, \$qresult, $userinput);
1.299 raeburn 4615: } else {
4616: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4617: "while attempting domrolesdump\n", $userinput);
4618: }
4619: } else {
4620: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
4621: "while attempting domrolesdump\n", $userinput);
4622: }
4623: return 1;
4624: }
4625:
4626: ®ister_handler("domrolesdump", \&dump_domainroles_handler, 0, 1, 0);
4627:
4628:
1.238 foxr 4629: # Process the tmpput command I'm not sure what this does.. Seems to
4630: # create a file in the lonDaemons/tmp directory of the form $id.tmp
4631: # where Id is the client's ip concatenated with a sequence number.
4632: # The file will contain some value that is passed in. Is this e.g.
4633: # a login token?
4634: #
4635: # Parameters:
4636: # $cmd - The command that got us dispatched.
4637: # $tail - The remainder of the request following $cmd:
4638: # In this case this will be the contents of the file.
4639: # $client - Socket connected to the client.
4640: # Returns:
4641: # 1 indicating processing can continue.
4642: # Side effects:
4643: # A file is created in the local filesystem.
4644: # A reply is sent to the client.
4645: sub tmp_put_handler {
4646: my ($cmd, $what, $client) = @_;
4647:
4648: my $userinput = "$cmd:$what"; # Reconstruct for logging.
4649:
1.347 raeburn 4650: my ($record,$context) = split(/:/,$what);
4651: if ($context ne '') {
4652: chomp($context);
4653: $context = &unescape($context);
4654: }
4655: my ($id,$store);
1.238 foxr 4656: $tmpsnum++;
1.347 raeburn 4657: if ($context eq 'resetpw') {
4658: $id = &md5_hex(&md5_hex(time.{}.rand().$$));
4659: } else {
4660: $id = $$.'_'.$clientip.'_'.$tmpsnum;
4661: }
1.238 foxr 4662: $id=~s/\W/\_/g;
1.347 raeburn 4663: $record=~s/\n//g;
1.238 foxr 4664: my $execdir=$perlvar{'lonDaemons'};
4665: if ($store=IO::File->new(">$execdir/tmp/$id.tmp")) {
1.347 raeburn 4666: print $store $record;
1.238 foxr 4667: close $store;
1.387 albertel 4668: &Reply($client, \$id, $userinput);
1.238 foxr 4669: } else {
4670: &Failure( $client, "error: ".($!+0)."IO::File->new Failed ".
4671: "while attempting tmpput\n", $userinput);
4672: }
4673: return 1;
4674:
4675: }
4676: ®ister_handler("tmpput", \&tmp_put_handler, 0, 1, 0);
1.263 albertel 4677:
1.238 foxr 4678: # Processes the tmpget command. This command returns the contents
4679: # of a temporary resource file(?) created via tmpput.
4680: #
4681: # Paramters:
4682: # $cmd - Command that got us dispatched.
4683: # $id - Tail of the command, contain the id of the resource
4684: # we want to fetch.
4685: # $client - socket open on the client.
4686: # Return:
4687: # 1 - Inidcating processing can continue.
4688: # Side effects:
4689: # A reply is sent to the client.
4690: #
4691: sub tmp_get_handler {
4692: my ($cmd, $id, $client) = @_;
4693:
4694: my $userinput = "$cmd:$id";
4695:
4696:
4697: $id=~s/\W/\_/g;
4698: my $store;
4699: my $execdir=$perlvar{'lonDaemons'};
4700: if ($store=IO::File->new("$execdir/tmp/$id.tmp")) {
4701: my $reply=<$store>;
1.387 albertel 4702: &Reply( $client, \$reply, $userinput);
1.238 foxr 4703: close $store;
4704: } else {
4705: &Failure( $client, "error: ".($!+0)."IO::File->new Failed ".
4706: "while attempting tmpget\n", $userinput);
4707: }
4708:
4709: return 1;
4710: }
4711: ®ister_handler("tmpget", \&tmp_get_handler, 0, 1, 0);
1.263 albertel 4712:
1.238 foxr 4713: #
4714: # Process the tmpdel command. This command deletes a temp resource
4715: # created by the tmpput command.
4716: #
4717: # Parameters:
4718: # $cmd - Command that got us here.
4719: # $id - Id of the temporary resource created.
4720: # $client - socket open on the client process.
4721: #
4722: # Returns:
4723: # 1 - Indicating processing should continue.
4724: # Side Effects:
4725: # A file is deleted
4726: # A reply is sent to the client.
4727: sub tmp_del_handler {
4728: my ($cmd, $id, $client) = @_;
4729:
4730: my $userinput= "$cmd:$id";
4731:
4732: chomp($id);
4733: $id=~s/\W/\_/g;
4734: my $execdir=$perlvar{'lonDaemons'};
4735: if (unlink("$execdir/tmp/$id.tmp")) {
4736: &Reply($client, "ok\n", $userinput);
4737: } else {
4738: &Failure( $client, "error: ".($!+0)."Unlink tmp Failed ".
4739: "while attempting tmpdel\n", $userinput);
4740: }
4741:
4742: return 1;
4743:
4744: }
4745: ®ister_handler("tmpdel", \&tmp_del_handler, 0, 1, 0);
1.263 albertel 4746:
1.238 foxr 4747: #
1.246 foxr 4748: # Processes the setannounce command. This command
4749: # creates a file named announce.txt in the top directory of
4750: # the documentn root and sets its contents. The announce.txt file is
4751: # printed in its entirety at the LonCAPA login page. Note:
4752: # once the announcement.txt fileis created it cannot be deleted.
4753: # However, setting the contents of the file to empty removes the
4754: # announcement from the login page of loncapa so who cares.
4755: #
4756: # Parameters:
4757: # $cmd - The command that got us dispatched.
4758: # $announcement - The text of the announcement.
4759: # $client - Socket open on the client process.
4760: # Retunrns:
4761: # 1 - Indicating request processing should continue
4762: # Side Effects:
4763: # The file {DocRoot}/announcement.txt is created.
4764: # A reply is sent to $client.
4765: #
4766: sub set_announce_handler {
4767: my ($cmd, $announcement, $client) = @_;
4768:
4769: my $userinput = "$cmd:$announcement";
4770:
4771: chomp($announcement);
4772: $announcement=&unescape($announcement);
4773: if (my $store=IO::File->new('>'.$perlvar{'lonDocRoot'}.
4774: '/announcement.txt')) {
4775: print $store $announcement;
4776: close $store;
4777: &Reply($client, "ok\n", $userinput);
4778: } else {
4779: &Failure($client, "error: ".($!+0)."\n", $userinput);
4780: }
4781:
4782: return 1;
4783: }
4784: ®ister_handler("setannounce", \&set_announce_handler, 0, 1, 0);
1.263 albertel 4785:
1.246 foxr 4786: #
4787: # Return the version of the daemon. This can be used to determine
4788: # the compatibility of cross version installations or, alternatively to
4789: # simply know who's out of date and who isn't. Note that the version
4790: # is returned concatenated with the tail.
4791: # Parameters:
4792: # $cmd - the request that dispatched to us.
4793: # $tail - Tail of the request (client's version?).
4794: # $client - Socket open on the client.
4795: #Returns:
4796: # 1 - continue processing requests.
4797: # Side Effects:
4798: # Replies with version to $client.
4799: sub get_version_handler {
4800: my ($cmd, $tail, $client) = @_;
4801:
4802: my $userinput = $cmd.$tail;
4803:
4804: &Reply($client, &version($userinput)."\n", $userinput);
4805:
4806:
4807: return 1;
4808: }
4809: ®ister_handler("version", \&get_version_handler, 0, 1, 0);
1.263 albertel 4810:
1.246 foxr 4811: # Set the current host and domain. This is used to support
4812: # multihomed systems. Each IP of the system, or even separate daemons
4813: # on the same IP can be treated as handling a separate lonCAPA virtual
4814: # machine. This command selects the virtual lonCAPA. The client always
4815: # knows the right one since it is lonc and it is selecting the domain/system
4816: # from the hosts.tab file.
4817: # Parameters:
4818: # $cmd - Command that dispatched us.
4819: # $tail - Tail of the command (domain/host requested).
4820: # $socket - Socket open on the client.
4821: #
4822: # Returns:
4823: # 1 - Indicates the program should continue to process requests.
4824: # Side-effects:
4825: # The default domain/system context is modified for this daemon.
4826: # a reply is sent to the client.
4827: #
4828: sub set_virtual_host_handler {
4829: my ($cmd, $tail, $socket) = @_;
4830:
4831: my $userinput ="$cmd:$tail";
4832:
4833: &Reply($client, &sethost($userinput)."\n", $userinput);
4834:
4835:
4836: return 1;
4837: }
1.247 albertel 4838: ®ister_handler("sethost", \&set_virtual_host_handler, 0, 1, 0);
1.246 foxr 4839:
4840: # Process a request to exit:
4841: # - "bye" is sent to the client.
4842: # - The client socket is shutdown and closed.
4843: # - We indicate to the caller that we should exit.
4844: # Formal Parameters:
4845: # $cmd - The command that got us here.
4846: # $tail - Tail of the command (empty).
4847: # $client - Socket open on the tail.
4848: # Returns:
4849: # 0 - Indicating the program should exit!!
4850: #
4851: sub exit_handler {
4852: my ($cmd, $tail, $client) = @_;
4853:
4854: my $userinput = "$cmd:$tail";
4855:
4856: &logthis("Client $clientip ($clientname) hanging up: $userinput");
4857: &Reply($client, "bye\n", $userinput);
4858: $client->shutdown(2); # shutdown the socket forcibly.
4859: $client->close();
4860:
4861: return 0;
4862: }
1.248 foxr 4863: ®ister_handler("exit", \&exit_handler, 0,1,1);
4864: ®ister_handler("init", \&exit_handler, 0,1,1);
4865: ®ister_handler("quit", \&exit_handler, 0,1,1);
4866:
4867: # Determine if auto-enrollment is enabled.
4868: # Note that the original had what I believe to be a defect.
4869: # The original returned 0 if the requestor was not a registerd client.
4870: # It should return "refused".
4871: # Formal Parameters:
4872: # $cmd - The command that invoked us.
4873: # $tail - The tail of the command (Extra command parameters.
4874: # $client - The socket open on the client that issued the request.
4875: # Returns:
4876: # 1 - Indicating processing should continue.
4877: #
4878: sub enrollment_enabled_handler {
4879: my ($cmd, $tail, $client) = @_;
4880: my $userinput = $cmd.":".$tail; # For logging purposes.
4881:
4882:
1.337 albertel 4883: my ($cdom) = split(/:/, $tail, 2); # Domain we're asking about.
4884:
1.248 foxr 4885: my $outcome = &localenroll::run($cdom);
1.387 albertel 4886: &Reply($client, \$outcome, $userinput);
1.248 foxr 4887:
4888: return 1;
4889: }
4890: ®ister_handler("autorun", \&enrollment_enabled_handler, 0, 1, 0);
4891:
1.417 raeburn 4892: #
1.423 raeburn 4893: # Validate an institutional code used for a LON-CAPA course.
1.417 raeburn 4894: #
4895: # Formal Parameters:
4896: # $cmd - The command request that got us dispatched.
4897: # $tail - The tail of the command. In this case,
4898: # this is a colon separated set of words that will be split
4899: # into:
1.424 raeburn 4900: # $dom - The domain for which the check of
4901: # institutional course code will occur.
4902: #
4903: # $instcode - The institutional code for the course
4904: # being requested, or validated for rights
4905: # to request.
4906: #
4907: # $owner - The course requestor (who will be the
4908: # course owner, in the form username:domain
4909: #
1.417 raeburn 4910: # $client - Socket open on the client.
4911: # Returns:
4912: # 1 - Indicating processing should continue.
4913: #
4914: sub validate_instcode_handler {
4915: my ($cmd, $tail, $client) = @_;
4916: my $userinput = "$cmd:$tail";
1.423 raeburn 4917: my ($dom,$instcode,$owner) = split(/:/, $tail);
1.422 raeburn 4918: $instcode = &unescape($instcode);
4919: $owner = &unescape($owner);
1.426 raeburn 4920: my ($outcome,$description) =
4921: &localenroll::validate_instcode($dom,$instcode,$owner);
4922: my $result = &escape($outcome).'&'.&escape($description);
4923: &Reply($client, \$result, $userinput);
1.417 raeburn 4924:
4925: return 1;
4926: }
4927: ®ister_handler("autovalidateinstcode", \&validate_instcode_handler, 0, 1, 0);
4928:
1.248 foxr 4929: # Get the official sections for which auto-enrollment is possible.
4930: # Since the admin people won't know about 'unofficial sections'
4931: # we cannot auto-enroll on them.
4932: # Formal Parameters:
4933: # $cmd - The command request that got us dispatched here.
4934: # $tail - The remainder of the request. In our case this
4935: # will be split into:
4936: # $coursecode - The course name from the admin point of view.
4937: # $cdom - The course's domain(?).
4938: # $client - Socket open on the client.
4939: # Returns:
4940: # 1 - Indiciting processing should continue.
4941: #
4942: sub get_sections_handler {
4943: my ($cmd, $tail, $client) = @_;
4944: my $userinput = "$cmd:$tail";
4945:
4946: my ($coursecode, $cdom) = split(/:/, $tail);
4947: my @secs = &localenroll::get_sections($coursecode,$cdom);
4948: my $seclist = &escape(join(':',@secs));
4949:
1.387 albertel 4950: &Reply($client, \$seclist, $userinput);
1.248 foxr 4951:
4952:
4953: return 1;
4954: }
4955: ®ister_handler("autogetsections", \&get_sections_handler, 0, 1, 0);
4956:
4957: # Validate the owner of a new course section.
4958: #
4959: # Formal Parameters:
4960: # $cmd - Command that got us dispatched.
4961: # $tail - the remainder of the command. For us this consists of a
4962: # colon separated string containing:
4963: # $inst - Course Id from the institutions point of view.
4964: # $owner - Proposed owner of the course.
4965: # $cdom - Domain of the course (from the institutions
4966: # point of view?)..
4967: # $client - Socket open on the client.
4968: #
4969: # Returns:
4970: # 1 - Processing should continue.
4971: #
4972: sub validate_course_owner_handler {
4973: my ($cmd, $tail, $client) = @_;
4974: my $userinput = "$cmd:$tail";
4975: my ($inst_course_id, $owner, $cdom) = split(/:/, $tail);
4976:
1.336 raeburn 4977: $owner = &unescape($owner);
1.248 foxr 4978: my $outcome = &localenroll::new_course($inst_course_id,$owner,$cdom);
1.387 albertel 4979: &Reply($client, \$outcome, $userinput);
1.248 foxr 4980:
4981:
4982:
4983: return 1;
4984: }
4985: ®ister_handler("autonewcourse", \&validate_course_owner_handler, 0, 1, 0);
1.263 albertel 4986:
1.248 foxr 4987: #
4988: # Validate a course section in the official schedule of classes
4989: # from the institutions point of view (part of autoenrollment).
4990: #
4991: # Formal Parameters:
4992: # $cmd - The command request that got us dispatched.
4993: # $tail - The tail of the command. In this case,
4994: # this is a colon separated set of words that will be split
4995: # into:
4996: # $inst_course_id - The course/section id from the
4997: # institutions point of view.
4998: # $cdom - The domain from the institutions
4999: # point of view.
5000: # $client - Socket open on the client.
5001: # Returns:
5002: # 1 - Indicating processing should continue.
5003: #
5004: sub validate_course_section_handler {
5005: my ($cmd, $tail, $client) = @_;
5006: my $userinput = "$cmd:$tail";
5007: my ($inst_course_id, $cdom) = split(/:/, $tail);
5008:
5009: my $outcome=&localenroll::validate_courseID($inst_course_id,$cdom);
1.387 albertel 5010: &Reply($client, \$outcome, $userinput);
1.248 foxr 5011:
5012:
5013: return 1;
5014: }
5015: ®ister_handler("autovalidatecourse", \&validate_course_section_handler, 0, 1, 0);
5016:
5017: #
1.340 raeburn 5018: # Validate course owner's access to enrollment data for specific class section.
5019: #
5020: #
5021: # Formal Parameters:
5022: # $cmd - The command request that got us dispatched.
5023: # $tail - The tail of the command. In this case this is a colon separated
5024: # set of words that will be split into:
5025: # $inst_class - Institutional code for the specific class section
5026: # $courseowner - The escaped username:domain of the course owner
5027: # $cdom - The domain of the course from the institution's
5028: # point of view.
5029: # $client - The socket open on the client.
5030: # Returns:
5031: # 1 - continue processing.
5032: #
5033:
5034: sub validate_class_access_handler {
5035: my ($cmd, $tail, $client) = @_;
5036: my $userinput = "$cmd:$tail";
1.383 raeburn 5037: my ($inst_class,$ownerlist,$cdom) = split(/:/, $tail);
1.392 raeburn 5038: my $owners = &unescape($ownerlist);
1.341 albertel 5039: my $outcome;
5040: eval {
5041: local($SIG{__DIE__})='DEFAULT';
1.392 raeburn 5042: $outcome=&localenroll::check_section($inst_class,$owners,$cdom);
1.341 albertel 5043: };
1.387 albertel 5044: &Reply($client,\$outcome, $userinput);
1.340 raeburn 5045:
5046: return 1;
5047: }
5048: ®ister_handler("autovalidateclass_sec", \&validate_class_access_handler, 0, 1, 0);
5049:
5050: #
5051: # Create a password for a new LON-CAPA user added by auto-enrollment.
5052: # Only used for case where authentication method for new user is localauth
1.248 foxr 5053: #
5054: # Formal Parameters:
5055: # $cmd - The command request that got us dispatched.
5056: # $tail - The tail of the command. In this case this is a colon separated
5057: # set of words that will be split into:
1.340 raeburn 5058: # $authparam - An authentication parameter (localauth parameter).
1.248 foxr 5059: # $cdom - The domain of the course from the institution's
5060: # point of view.
5061: # $client - The socket open on the client.
5062: # Returns:
5063: # 1 - continue processing.
5064: #
5065: sub create_auto_enroll_password_handler {
5066: my ($cmd, $tail, $client) = @_;
5067: my $userinput = "$cmd:$tail";
5068:
5069: my ($authparam, $cdom) = split(/:/, $userinput);
5070:
5071: my ($create_passwd,$authchk);
5072: ($authparam,
5073: $create_passwd,
5074: $authchk) = &localenroll::create_password($authparam,$cdom);
5075:
5076: &Reply($client, &escape($authparam.':'.$create_passwd.':'.$authchk)."\n",
5077: $userinput);
5078:
5079:
5080: return 1;
5081: }
5082: ®ister_handler("autocreatepassword", \&create_auto_enroll_password_handler,
5083: 0, 1, 0);
5084:
5085: # Retrieve and remove temporary files created by/during autoenrollment.
5086: #
5087: # Formal Parameters:
5088: # $cmd - The command that got us dispatched.
5089: # $tail - The tail of the command. In our case this is a colon
5090: # separated list that will be split into:
5091: # $filename - The name of the file to remove.
5092: # The filename is given as a path relative to
5093: # the LonCAPA temp file directory.
5094: # $client - Socket open on the client.
5095: #
5096: # Returns:
5097: # 1 - Continue processing.
5098: sub retrieve_auto_file_handler {
5099: my ($cmd, $tail, $client) = @_;
5100: my $userinput = "cmd:$tail";
5101:
5102: my ($filename) = split(/:/, $tail);
5103:
5104: my $source = $perlvar{'lonDaemons'}.'/tmp/'.$filename;
5105: if ( (-e $source) && ($filename ne '') ) {
5106: my $reply = '';
5107: if (open(my $fh,$source)) {
5108: while (<$fh>) {
5109: chomp($_);
5110: $_ =~ s/^\s+//g;
5111: $_ =~ s/\s+$//g;
5112: $reply .= $_;
5113: }
5114: close($fh);
5115: &Reply($client, &escape($reply)."\n", $userinput);
5116:
5117: # Does this have to be uncommented??!? (RF).
5118: #
5119: # unlink($source);
5120: } else {
5121: &Failure($client, "error\n", $userinput);
5122: }
5123: } else {
5124: &Failure($client, "error\n", $userinput);
5125: }
5126:
5127:
5128: return 1;
5129: }
5130: ®ister_handler("autoretrieve", \&retrieve_auto_file_handler, 0,1,0);
5131:
1.423 raeburn 5132: sub crsreq_checks_handler {
5133: my ($cmd, $tail, $client) = @_;
5134: my $userinput = "$cmd:$tail";
5135: my $dom = $tail;
5136: my $result;
1.424 raeburn 5137: my @reqtypes = ('official','unofficial','community');
1.423 raeburn 5138: eval {
5139: local($SIG{__DIE__})='DEFAULT';
5140: my %validations;
1.424 raeburn 5141: my $response = &localenroll::crsreq_checks($dom,\@reqtypes,
5142: \%validations);
1.423 raeburn 5143: if ($response eq 'ok') {
5144: foreach my $key (keys(%validations)) {
5145: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($validations{$key}).'&';
5146: }
5147: $result =~ s/\&$//;
5148: } else {
5149: $result = 'error';
5150: }
5151: };
5152: if (!$@) {
5153: &Reply($client, \$result, $userinput);
5154: } else {
5155: &Failure($client,"unknown_cmd\n",$userinput);
5156: }
5157: return 1;
5158: }
5159: ®ister_handler("autocrsreqchecks", \&crsreq_checks_handler, 0, 1, 0);
5160:
5161: sub validate_crsreq_handler {
5162: my ($cmd, $tail, $client) = @_;
5163: my $userinput = "$cmd:$tail";
5164: my ($dom,$owner,$crstype,$inststatuslist,$instcode,$instseclist) = split(/:/, $tail);
5165: $instcode = &unescape($instcode);
5166: $owner = &unescape($owner);
5167: $crstype = &unescape($crstype);
5168: $inststatuslist = &unescape($inststatuslist);
5169: $instcode = &unescape($instcode);
5170: $instseclist = &unescape($instseclist);
5171: my $outcome;
5172: eval {
5173: local($SIG{__DIE__})='DEFAULT';
5174: $outcome = &localenroll::validate_crsreq($dom,$owner,$crstype,
5175: $inststatuslist,$instcode,
5176: $instseclist);
5177: };
5178: if (!$@) {
5179: &Reply($client, \$outcome, $userinput);
5180: } else {
5181: &Failure($client,"unknown_cmd\n",$userinput);
5182: }
5183: return 1;
5184: }
5185: ®ister_handler("autocrsreqvalidation", \&validate_crsreq_handler, 0, 1, 0);
5186:
1.248 foxr 5187: #
5188: # Read and retrieve institutional code format (for support form).
5189: # Formal Parameters:
5190: # $cmd - Command that dispatched us.
5191: # $tail - Tail of the command. In this case it conatins
5192: # the course domain and the coursename.
5193: # $client - Socket open on the client.
5194: # Returns:
5195: # 1 - Continue processing.
5196: #
5197: sub get_institutional_code_format_handler {
5198: my ($cmd, $tail, $client) = @_;
5199: my $userinput = "$cmd:$tail";
5200:
5201: my $reply;
5202: my($cdom,$course) = split(/:/,$tail);
5203: my @pairs = split/\&/,$course;
5204: my %instcodes = ();
5205: my %codes = ();
5206: my @codetitles = ();
5207: my %cat_titles = ();
5208: my %cat_order = ();
5209: foreach (@pairs) {
5210: my ($key,$value) = split/=/,$_;
5211: $instcodes{&unescape($key)} = &unescape($value);
5212: }
5213: my $formatreply = &localenroll::instcode_format($cdom,
5214: \%instcodes,
5215: \%codes,
5216: \@codetitles,
5217: \%cat_titles,
5218: \%cat_order);
5219: if ($formatreply eq 'ok') {
1.365 albertel 5220: my $codes_str = &Apache::lonnet::hash2str(%codes);
5221: my $codetitles_str = &Apache::lonnet::array2str(@codetitles);
5222: my $cat_titles_str = &Apache::lonnet::hash2str(%cat_titles);
5223: my $cat_order_str = &Apache::lonnet::hash2str(%cat_order);
1.248 foxr 5224: &Reply($client,
5225: $codes_str.':'.$codetitles_str.':'.$cat_titles_str.':'
5226: .$cat_order_str."\n",
5227: $userinput);
5228: } else {
5229: # this else branch added by RF since if not ok, lonc will
5230: # hang waiting on reply until timeout.
5231: #
5232: &Reply($client, "format_error\n", $userinput);
5233: }
5234:
5235: return 1;
5236: }
1.265 albertel 5237: ®ister_handler("autoinstcodeformat",
5238: \&get_institutional_code_format_handler,0,1,0);
1.246 foxr 5239:
1.345 raeburn 5240: sub get_institutional_defaults_handler {
5241: my ($cmd, $tail, $client) = @_;
5242: my $userinput = "$cmd:$tail";
5243:
5244: my $dom = $tail;
5245: my %defaults_hash;
5246: my @code_order;
5247: my $outcome;
5248: eval {
5249: local($SIG{__DIE__})='DEFAULT';
5250: $outcome = &localenroll::instcode_defaults($dom,\%defaults_hash,
5251: \@code_order);
5252: };
5253: if (!$@) {
5254: if ($outcome eq 'ok') {
5255: my $result='';
5256: while (my ($key,$value) = each(%defaults_hash)) {
5257: $result.=&escape($key).'='.&escape($value).'&';
5258: }
5259: $result .= 'code_order='.&escape(join('&',@code_order));
1.387 albertel 5260: &Reply($client,\$result,$userinput);
1.345 raeburn 5261: } else {
5262: &Reply($client,"error\n", $userinput);
5263: }
5264: } else {
5265: &Failure($client,"unknown_cmd\n",$userinput);
5266: }
5267: }
5268: ®ister_handler("autoinstcodedefaults",
5269: \&get_institutional_defaults_handler,0,1,0);
5270:
1.416 raeburn 5271: sub get_possible_instcodes_handler {
5272: my ($cmd, $tail, $client) = @_;
5273: my $userinput = "$cmd:$tail";
5274:
5275: my $reply;
5276: my $cdom = $tail;
1.417 raeburn 5277: my (@codetitles,%cat_titles,%cat_order,@code_order);
1.416 raeburn 5278: my $formatreply = &localenroll::possible_instcodes($cdom,
5279: \@codetitles,
5280: \%cat_titles,
1.417 raeburn 5281: \%cat_order,
5282: \@code_order);
1.416 raeburn 5283: if ($formatreply eq 'ok') {
5284: my $result = join('&',map {&escape($_);} (@codetitles)).':';
1.417 raeburn 5285: $result .= join('&',map {&escape($_);} (@code_order)).':';
1.416 raeburn 5286: foreach my $key (keys(%cat_titles)) {
5287: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($cat_titles{$key}).'&';
5288: }
5289: $result =~ s/\&$//;
5290: $result .= ':';
5291: foreach my $key (keys(%cat_order)) {
5292: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($cat_order{$key}).'&';
5293: }
5294: $result =~ s/\&$//;
5295: &Reply($client,\$result,$userinput);
5296: } else {
5297: &Reply($client, "format_error\n", $userinput);
5298: }
5299: return 1;
5300: }
5301: ®ister_handler("autopossibleinstcodes",
5302: \&get_possible_instcodes_handler,0,1,0);
5303:
1.381 raeburn 5304: sub get_institutional_user_rules {
5305: my ($cmd, $tail, $client) = @_;
5306: my $userinput = "$cmd:$tail";
5307: my $dom = &unescape($tail);
5308: my (%rules_hash,@rules_order);
5309: my $outcome;
5310: eval {
5311: local($SIG{__DIE__})='DEFAULT';
5312: $outcome = &localenroll::username_rules($dom,\%rules_hash,\@rules_order);
5313: };
5314: if (!$@) {
5315: if ($outcome eq 'ok') {
5316: my $result;
5317: foreach my $key (keys(%rules_hash)) {
5318: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($rules_hash{$key}).'&';
5319: }
5320: $result =~ s/\&$//;
5321: $result .= ':';
5322: if (@rules_order > 0) {
5323: foreach my $item (@rules_order) {
5324: $result .= &escape($item).'&';
5325: }
5326: }
5327: $result =~ s/\&$//;
1.387 albertel 5328: &Reply($client,\$result,$userinput);
1.381 raeburn 5329: } else {
5330: &Reply($client,"error\n", $userinput);
5331: }
5332: } else {
5333: &Failure($client,"unknown_cmd\n",$userinput);
5334: }
5335: }
5336: ®ister_handler("instuserrules",\&get_institutional_user_rules,0,1,0);
5337:
1.389 raeburn 5338: sub get_institutional_id_rules {
5339: my ($cmd, $tail, $client) = @_;
5340: my $userinput = "$cmd:$tail";
5341: my $dom = &unescape($tail);
5342: my (%rules_hash,@rules_order);
5343: my $outcome;
5344: eval {
5345: local($SIG{__DIE__})='DEFAULT';
5346: $outcome = &localenroll::id_rules($dom,\%rules_hash,\@rules_order);
5347: };
5348: if (!$@) {
5349: if ($outcome eq 'ok') {
5350: my $result;
5351: foreach my $key (keys(%rules_hash)) {
5352: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($rules_hash{$key}).'&';
5353: }
5354: $result =~ s/\&$//;
5355: $result .= ':';
5356: if (@rules_order > 0) {
5357: foreach my $item (@rules_order) {
5358: $result .= &escape($item).'&';
5359: }
5360: }
5361: $result =~ s/\&$//;
5362: &Reply($client,\$result,$userinput);
5363: } else {
5364: &Reply($client,"error\n", $userinput);
5365: }
5366: } else {
5367: &Failure($client,"unknown_cmd\n",$userinput);
5368: }
5369: }
5370: ®ister_handler("instidrules",\&get_institutional_id_rules,0,1,0);
5371:
1.397 raeburn 5372: sub get_institutional_selfcreate_rules {
1.396 raeburn 5373: my ($cmd, $tail, $client) = @_;
5374: my $userinput = "$cmd:$tail";
5375: my $dom = &unescape($tail);
5376: my (%rules_hash,@rules_order);
5377: my $outcome;
5378: eval {
5379: local($SIG{__DIE__})='DEFAULT';
1.397 raeburn 5380: $outcome = &localenroll::selfcreate_rules($dom,\%rules_hash,\@rules_order);
1.396 raeburn 5381: };
5382: if (!$@) {
5383: if ($outcome eq 'ok') {
5384: my $result;
5385: foreach my $key (keys(%rules_hash)) {
5386: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($rules_hash{$key}).'&';
5387: }
5388: $result =~ s/\&$//;
5389: $result .= ':';
5390: if (@rules_order > 0) {
5391: foreach my $item (@rules_order) {
5392: $result .= &escape($item).'&';
5393: }
5394: }
5395: $result =~ s/\&$//;
5396: &Reply($client,\$result,$userinput);
5397: } else {
5398: &Reply($client,"error\n", $userinput);
5399: }
5400: } else {
5401: &Failure($client,"unknown_cmd\n",$userinput);
5402: }
5403: }
1.397 raeburn 5404: ®ister_handler("instemailrules",\&get_institutional_selfcreate_rules,0,1,0);
1.396 raeburn 5405:
1.381 raeburn 5406:
5407: sub institutional_username_check {
5408: my ($cmd, $tail, $client) = @_;
5409: my $userinput = "$cmd:$tail";
5410: my %rulecheck;
5411: my $outcome;
5412: my ($udom,$uname,@rules) = split(/:/,$tail);
5413: $udom = &unescape($udom);
5414: $uname = &unescape($uname);
5415: @rules = map {&unescape($_);} (@rules);
5416: eval {
5417: local($SIG{__DIE__})='DEFAULT';
5418: $outcome = &localenroll::username_check($udom,$uname,\@rules,\%rulecheck);
5419: };
5420: if (!$@) {
5421: if ($outcome eq 'ok') {
5422: my $result='';
5423: foreach my $key (keys(%rulecheck)) {
5424: $result.=&escape($key).'='.&Apache::lonnet::freeze_escape($rulecheck{$key}).'&';
5425: }
1.387 albertel 5426: &Reply($client,\$result,$userinput);
1.381 raeburn 5427: } else {
5428: &Reply($client,"error\n", $userinput);
5429: }
5430: } else {
5431: &Failure($client,"unknown_cmd\n",$userinput);
5432: }
5433: }
5434: ®ister_handler("instrulecheck",\&institutional_username_check,0,1,0);
5435:
1.389 raeburn 5436: sub institutional_id_check {
5437: my ($cmd, $tail, $client) = @_;
5438: my $userinput = "$cmd:$tail";
5439: my %rulecheck;
5440: my $outcome;
5441: my ($udom,$id,@rules) = split(/:/,$tail);
5442: $udom = &unescape($udom);
5443: $id = &unescape($id);
5444: @rules = map {&unescape($_);} (@rules);
5445: eval {
5446: local($SIG{__DIE__})='DEFAULT';
5447: $outcome = &localenroll::id_check($udom,$id,\@rules,\%rulecheck);
5448: };
5449: if (!$@) {
5450: if ($outcome eq 'ok') {
5451: my $result='';
5452: foreach my $key (keys(%rulecheck)) {
5453: $result.=&escape($key).'='.&Apache::lonnet::freeze_escape($rulecheck{$key}).'&';
5454: }
5455: &Reply($client,\$result,$userinput);
5456: } else {
5457: &Reply($client,"error\n", $userinput);
5458: }
5459: } else {
5460: &Failure($client,"unknown_cmd\n",$userinput);
5461: }
5462: }
5463: ®ister_handler("instidrulecheck",\&institutional_id_check,0,1,0);
1.345 raeburn 5464:
1.397 raeburn 5465: sub institutional_selfcreate_check {
1.396 raeburn 5466: my ($cmd, $tail, $client) = @_;
5467: my $userinput = "$cmd:$tail";
5468: my %rulecheck;
5469: my $outcome;
5470: my ($udom,$email,@rules) = split(/:/,$tail);
5471: $udom = &unescape($udom);
5472: $email = &unescape($email);
5473: @rules = map {&unescape($_);} (@rules);
5474: eval {
5475: local($SIG{__DIE__})='DEFAULT';
1.397 raeburn 5476: $outcome = &localenroll::selfcreate_check($udom,$email,\@rules,\%rulecheck);
1.396 raeburn 5477: };
5478: if (!$@) {
5479: if ($outcome eq 'ok') {
5480: my $result='';
5481: foreach my $key (keys(%rulecheck)) {
5482: $result.=&escape($key).'='.&Apache::lonnet::freeze_escape($rulecheck{$key}).'&';
5483: }
5484: &Reply($client,\$result,$userinput);
5485: } else {
5486: &Reply($client,"error\n", $userinput);
5487: }
5488: } else {
5489: &Failure($client,"unknown_cmd\n",$userinput);
5490: }
5491: }
1.397 raeburn 5492: ®ister_handler("instselfcreatecheck",\&institutional_selfcreate_check,0,1,0);
1.396 raeburn 5493:
1.317 raeburn 5494: # Get domain specific conditions for import of student photographs to a course
5495: #
5496: # Retrieves information from photo_permission subroutine in localenroll.
5497: # Returns outcome (ok) if no processing errors, and whether course owner is
5498: # required to accept conditions of use (yes/no).
5499: #
5500: #
5501: sub photo_permission_handler {
5502: my ($cmd, $tail, $client) = @_;
5503: my $userinput = "$cmd:$tail";
5504: my $cdom = $tail;
5505: my ($perm_reqd,$conditions);
1.320 albertel 5506: my $outcome;
5507: eval {
5508: local($SIG{__DIE__})='DEFAULT';
5509: $outcome = &localenroll::photo_permission($cdom,\$perm_reqd,
5510: \$conditions);
5511: };
5512: if (!$@) {
5513: &Reply($client, &escape($outcome.':'.$perm_reqd.':'. $conditions)."\n",
5514: $userinput);
5515: } else {
5516: &Failure($client,"unknown_cmd\n",$userinput);
5517: }
5518: return 1;
1.317 raeburn 5519: }
5520: ®ister_handler("autophotopermission",\&photo_permission_handler,0,1,0);
5521:
5522: #
5523: # Checks if student photo is available for a user in the domain, in the user's
5524: # directory (in /userfiles/internal/studentphoto.jpg).
5525: # Uses localstudentphoto:fetch() to ensure there is an up to date copy of
5526: # the student's photo.
5527:
5528: sub photo_check_handler {
5529: my ($cmd, $tail, $client) = @_;
5530: my $userinput = "$cmd:$tail";
5531: my ($udom,$uname,$pid) = split(/:/,$tail);
5532: $udom = &unescape($udom);
5533: $uname = &unescape($uname);
5534: $pid = &unescape($pid);
5535: my $path=&propath($udom,$uname).'/userfiles/internal/';
5536: if (!-e $path) {
5537: &mkpath($path);
5538: }
5539: my $response;
5540: my $result = &localstudentphoto::fetch($udom,$uname,$pid,\$response);
5541: $result .= ':'.$response;
5542: &Reply($client, &escape($result)."\n",$userinput);
1.320 albertel 5543: return 1;
1.317 raeburn 5544: }
5545: ®ister_handler("autophotocheck",\&photo_check_handler,0,1,0);
5546:
5547: #
5548: # Retrieve information from localenroll about whether to provide a button
5549: # for users who have enbled import of student photos to initiate an
5550: # update of photo files for registered students. Also include
5551: # comment to display alongside button.
5552:
5553: sub photo_choice_handler {
5554: my ($cmd, $tail, $client) = @_;
5555: my $userinput = "$cmd:$tail";
5556: my $cdom = &unescape($tail);
1.320 albertel 5557: my ($update,$comment);
5558: eval {
5559: local($SIG{__DIE__})='DEFAULT';
5560: ($update,$comment) = &localenroll::manager_photo_update($cdom);
5561: };
5562: if (!$@) {
5563: &Reply($client,&escape($update).':'.&escape($comment)."\n",$userinput);
5564: } else {
5565: &Failure($client,"unknown_cmd\n",$userinput);
5566: }
5567: return 1;
1.317 raeburn 5568: }
5569: ®ister_handler("autophotochoice",\&photo_choice_handler,0,1,0);
5570:
1.265 albertel 5571: #
5572: # Gets a student's photo to exist (in the correct image type) in the user's
5573: # directory.
5574: # Formal Parameters:
5575: # $cmd - The command request that got us dispatched.
5576: # $tail - A colon separated set of words that will be split into:
5577: # $domain - student's domain
5578: # $uname - student username
5579: # $type - image type desired
5580: # $client - The socket open on the client.
5581: # Returns:
5582: # 1 - continue processing.
1.317 raeburn 5583:
1.265 albertel 5584: sub student_photo_handler {
5585: my ($cmd, $tail, $client) = @_;
1.317 raeburn 5586: my ($domain,$uname,$ext,$type) = split(/:/, $tail);
1.265 albertel 5587:
1.317 raeburn 5588: my $path=&propath($domain,$uname). '/userfiles/internal/';
5589: my $filename = 'studentphoto.'.$ext;
5590: if ($type eq 'thumbnail') {
5591: $filename = 'studentphoto_tn.'.$ext;
5592: }
5593: if (-e $path.$filename) {
1.265 albertel 5594: &Reply($client,"ok\n","$cmd:$tail");
5595: return 1;
5596: }
5597: &mkpath($path);
1.317 raeburn 5598: my $file;
5599: if ($type eq 'thumbnail') {
1.320 albertel 5600: eval {
5601: local($SIG{__DIE__})='DEFAULT';
5602: $file=&localstudentphoto::fetch_thumbnail($domain,$uname);
5603: };
1.317 raeburn 5604: } else {
5605: $file=&localstudentphoto::fetch($domain,$uname);
5606: }
1.265 albertel 5607: if (!$file) {
5608: &Failure($client,"unavailable\n","$cmd:$tail");
5609: return 1;
5610: }
1.317 raeburn 5611: if (!-e $path.$filename) { &convert_photo($file,$path.$filename); }
5612: if (-e $path.$filename) {
1.265 albertel 5613: &Reply($client,"ok\n","$cmd:$tail");
5614: return 1;
5615: }
5616: &Failure($client,"unable_to_convert\n","$cmd:$tail");
5617: return 1;
5618: }
5619: ®ister_handler("studentphoto", \&student_photo_handler, 0, 1, 0);
1.246 foxr 5620:
1.361 raeburn 5621: sub inst_usertypes_handler {
5622: my ($cmd, $domain, $client) = @_;
5623: my $res;
5624: my $userinput = $cmd.":".$domain; # For logging purposes.
1.370 albertel 5625: my (%typeshash,@order,$result);
5626: eval {
5627: local($SIG{__DIE__})='DEFAULT';
5628: $result=&localenroll::inst_usertypes($domain,\%typeshash,\@order);
5629: };
5630: if ($result eq 'ok') {
1.361 raeburn 5631: if (keys(%typeshash) > 0) {
5632: foreach my $key (keys(%typeshash)) {
5633: $res.=&escape($key).'='.&escape($typeshash{$key}).'&';
5634: }
5635: }
5636: $res=~s/\&$//;
5637: $res .= ':';
5638: if (@order > 0) {
5639: foreach my $item (@order) {
5640: $res .= &escape($item).'&';
5641: }
5642: }
5643: $res=~s/\&$//;
5644: }
1.387 albertel 5645: &Reply($client, \$res, $userinput);
1.361 raeburn 5646: return 1;
5647: }
5648: ®ister_handler("inst_usertypes", \&inst_usertypes_handler, 0, 1, 0);
5649:
1.264 albertel 5650: # mkpath makes all directories for a file, expects an absolute path with a
5651: # file or a trailing / if just a dir is passed
5652: # returns 1 on success 0 on failure
5653: sub mkpath {
5654: my ($file)=@_;
5655: my @parts=split(/\//,$file,-1);
5656: my $now=$parts[0].'/'.$parts[1].'/'.$parts[2];
5657: for (my $i=3;$i<= ($#parts-1);$i++) {
1.265 albertel 5658: $now.='/'.$parts[$i];
1.264 albertel 5659: if (!-e $now) {
5660: if (!mkdir($now,0770)) { return 0; }
5661: }
5662: }
5663: return 1;
5664: }
5665:
1.207 foxr 5666: #---------------------------------------------------------------
5667: #
5668: # Getting, decoding and dispatching requests:
5669: #
5670: #
5671: # Get a Request:
5672: # Gets a Request message from the client. The transaction
5673: # is defined as a 'line' of text. We remove the new line
5674: # from the text line.
1.226 foxr 5675: #
1.211 albertel 5676: sub get_request {
1.207 foxr 5677: my $input = <$client>;
5678: chomp($input);
1.226 foxr 5679:
1.234 foxr 5680: &Debug("get_request: Request = $input\n");
1.207 foxr 5681:
5682: &status('Processing '.$clientname.':'.$input);
5683:
5684: return $input;
5685: }
1.212 foxr 5686: #---------------------------------------------------------------
5687: #
5688: # Process a request. This sub should shrink as each action
5689: # gets farmed out into a separat sub that is registered
5690: # with the dispatch hash.
5691: #
5692: # Parameters:
5693: # user_input - The request received from the client (lonc).
5694: # Returns:
5695: # true to keep processing, false if caller should exit.
5696: #
5697: sub process_request {
5698: my ($userinput) = @_; # Easier for now to break style than to
5699: # fix all the userinput -> user_input.
5700: my $wasenc = 0; # True if request was encrypted.
5701: # ------------------------------------------------------------ See if encrypted
1.322 albertel 5702: # for command
5703: # sethost:<server>
5704: # <command>:<args>
5705: # we just send it to the processor
5706: # for
5707: # sethost:<server>:<command>:<args>
5708: # we do the implict set host and then do the command
5709: if ($userinput =~ /^sethost:/) {
5710: (my $cmd,my $newid,$userinput) = split(':',$userinput,3);
5711: if (defined($userinput)) {
5712: &sethost("$cmd:$newid");
5713: } else {
5714: $userinput = "$cmd:$newid";
5715: }
5716: }
5717:
1.212 foxr 5718: if ($userinput =~ /^enc/) {
5719: $userinput = decipher($userinput);
5720: $wasenc=1;
5721: if(!$userinput) { # Cipher not defined.
1.251 foxr 5722: &Failure($client, "error: Encrypted data without negotated key\n");
1.212 foxr 5723: return 0;
5724: }
5725: }
5726: Debug("process_request: $userinput\n");
5727:
1.213 foxr 5728: #
5729: # The 'correct way' to add a command to lond is now to
5730: # write a sub to execute it and Add it to the command dispatch
5731: # hash via a call to register_handler.. The comments to that
5732: # sub should give you enough to go on to show how to do this
5733: # along with the examples that are building up as this code
5734: # is getting refactored. Until all branches of the
5735: # if/elseif monster below have been factored out into
5736: # separate procesor subs, if the dispatch hash is missing
5737: # the command keyword, we will fall through to the remainder
5738: # of the if/else chain below in order to keep this thing in
5739: # working order throughout the transmogrification.
5740:
5741: my ($command, $tail) = split(/:/, $userinput, 2);
5742: chomp($command);
5743: chomp($tail);
5744: $tail =~ s/(\r)//; # This helps people debugging with e.g. telnet.
1.214 foxr 5745: $command =~ s/(\r)//; # And this too for parameterless commands.
5746: if(!$tail) {
5747: $tail =""; # defined but blank.
5748: }
1.213 foxr 5749:
5750: &Debug("Command received: $command, encoded = $wasenc");
5751:
5752: if(defined $Dispatcher{$command}) {
5753:
5754: my $dispatch_info = $Dispatcher{$command};
5755: my $handler = $$dispatch_info[0];
5756: my $need_encode = $$dispatch_info[1];
5757: my $client_types = $$dispatch_info[2];
5758: Debug("Matched dispatch hash: mustencode: $need_encode "
5759: ."ClientType $client_types");
5760:
5761: # Validate the request:
5762:
5763: my $ok = 1;
5764: my $requesterprivs = 0;
5765: if(&isClient()) {
5766: $requesterprivs |= $CLIENT_OK;
5767: }
5768: if(&isManager()) {
5769: $requesterprivs |= $MANAGER_OK;
5770: }
5771: if($need_encode && (!$wasenc)) {
5772: Debug("Must encode but wasn't: $need_encode $wasenc");
5773: $ok = 0;
5774: }
5775: if(($client_types & $requesterprivs) == 0) {
5776: Debug("Client not privileged to do this operation");
5777: $ok = 0;
5778: }
5779:
5780: if($ok) {
5781: Debug("Dispatching to handler $command $tail");
5782: my $keep_going = &$handler($command, $tail, $client);
5783: return $keep_going;
5784: } else {
5785: Debug("Refusing to dispatch because client did not match requirements");
5786: Failure($client, "refused\n", $userinput);
5787: return 1;
5788: }
5789:
5790: }
5791:
1.262 foxr 5792: print $client "unknown_cmd\n";
1.212 foxr 5793: # -------------------------------------------------------------------- complete
5794: Debug("process_request - returning 1");
5795: return 1;
5796: }
1.207 foxr 5797: #
5798: # Decipher encoded traffic
5799: # Parameters:
5800: # input - Encoded data.
5801: # Returns:
5802: # Decoded data or undef if encryption key was not yet negotiated.
5803: # Implicit input:
5804: # cipher - This global holds the negotiated encryption key.
5805: #
1.211 albertel 5806: sub decipher {
1.207 foxr 5807: my ($input) = @_;
5808: my $output = '';
1.212 foxr 5809:
5810:
1.207 foxr 5811: if($cipher) {
5812: my($enc, $enclength, $encinput) = split(/:/, $input);
5813: for(my $encidx = 0; $encidx < length($encinput); $encidx += 16) {
5814: $output .=
5815: $cipher->decrypt(pack("H16", substr($encinput, $encidx, 16)));
5816: }
5817: return substr($output, 0, $enclength);
5818: } else {
5819: return undef;
5820: }
5821: }
5822:
5823: #
5824: # Register a command processor. This function is invoked to register a sub
5825: # to process a request. Once registered, the ProcessRequest sub can automatically
5826: # dispatch requests to an appropriate sub, and do the top level validity checking
5827: # as well:
5828: # - Is the keyword recognized.
5829: # - Is the proper client type attempting the request.
5830: # - Is the request encrypted if it has to be.
5831: # Parameters:
5832: # $request_name - Name of the request being registered.
5833: # This is the command request that will match
5834: # against the hash keywords to lookup the information
5835: # associated with the dispatch information.
5836: # $procedure - Reference to a sub to call to process the request.
5837: # All subs get called as follows:
5838: # Procedure($cmd, $tail, $replyfd, $key)
5839: # $cmd - the actual keyword that invoked us.
5840: # $tail - the tail of the request that invoked us.
5841: # $replyfd- File descriptor connected to the client
5842: # $must_encode - True if the request must be encoded to be good.
5843: # $client_ok - True if it's ok for a client to request this.
5844: # $manager_ok - True if it's ok for a manager to request this.
5845: # Side effects:
5846: # - On success, the Dispatcher hash has an entry added for the key $RequestName
5847: # - On failure, the program will die as it's a bad internal bug to try to
5848: # register a duplicate command handler.
5849: #
1.211 albertel 5850: sub register_handler {
1.212 foxr 5851: my ($request_name,$procedure,$must_encode, $client_ok,$manager_ok) = @_;
1.207 foxr 5852:
5853: # Don't allow duplication#
5854:
5855: if (defined $Dispatcher{$request_name}) {
5856: die "Attempting to define a duplicate request handler for $request_name\n";
5857: }
5858: # Build the client type mask:
5859:
5860: my $client_type_mask = 0;
5861: if($client_ok) {
5862: $client_type_mask |= $CLIENT_OK;
5863: }
5864: if($manager_ok) {
5865: $client_type_mask |= $MANAGER_OK;
5866: }
5867:
5868: # Enter the hash:
5869:
5870: my @entry = ($procedure, $must_encode, $client_type_mask);
5871:
5872: $Dispatcher{$request_name} = \@entry;
5873:
5874: }
5875:
5876:
5877: #------------------------------------------------------------------
5878:
5879:
5880:
5881:
1.141 foxr 5882: #
1.96 foxr 5883: # Convert an error return code from lcpasswd to a string value.
5884: #
5885: sub lcpasswdstrerror {
5886: my $ErrorCode = shift;
1.97 foxr 5887: if(($ErrorCode < 0) || ($ErrorCode > $lastpwderror)) {
1.96 foxr 5888: return "lcpasswd Unrecognized error return value ".$ErrorCode;
5889: } else {
1.98 foxr 5890: return $passwderrors[$ErrorCode];
1.96 foxr 5891: }
5892: }
5893:
1.97 foxr 5894: #
5895: # Convert an error return code from lcuseradd to a string value:
5896: #
5897: sub lcuseraddstrerror {
5898: my $ErrorCode = shift;
5899: if(($ErrorCode < 0) || ($ErrorCode > $lastadderror)) {
5900: return "lcuseradd - Unrecognized error code: ".$ErrorCode;
5901: } else {
1.98 foxr 5902: return $adderrors[$ErrorCode];
1.97 foxr 5903: }
5904: }
5905:
1.23 harris41 5906: # grabs exception and records it to log before exiting
5907: sub catchexception {
1.27 albertel 5908: my ($error)=@_;
1.25 www 5909: $SIG{'QUIT'}='DEFAULT';
5910: $SIG{__DIE__}='DEFAULT';
1.165 albertel 5911: &status("Catching exception");
1.190 albertel 5912: &logthis("<font color='red'>CRITICAL: "
1.373 albertel 5913: ."ABNORMAL EXIT. Child $$ for server ".$perlvar{'lonHostID'}." died through "
1.27 albertel 5914: ."a crash with this error msg->[$error]</font>");
1.57 www 5915: &logthis('Famous last words: '.$status.' - '.$lastlog);
1.27 albertel 5916: if ($client) { print $client "error: $error\n"; }
1.59 www 5917: $server->close();
1.27 albertel 5918: die($error);
1.23 harris41 5919: }
1.63 www 5920: sub timeout {
1.165 albertel 5921: &status("Handling Timeout");
1.190 albertel 5922: &logthis("<font color='red'>CRITICAL: TIME OUT ".$$."</font>");
1.63 www 5923: &catchexception('Timeout');
5924: }
1.22 harris41 5925: # -------------------------------- Set signal handlers to record abnormal exits
5926:
1.226 foxr 5927:
1.22 harris41 5928: $SIG{'QUIT'}=\&catchexception;
5929: $SIG{__DIE__}=\&catchexception;
5930:
1.81 matthew 5931: # ---------------------------------- Read loncapa_apache.conf and loncapa.conf
1.95 harris41 5932: &status("Read loncapa.conf and loncapa_apache.conf");
5933: my $perlvarref=LONCAPA::Configuration::read_conf('loncapa.conf');
1.141 foxr 5934: %perlvar=%{$perlvarref};
1.80 harris41 5935: undef $perlvarref;
1.19 www 5936:
1.35 harris41 5937: # ----------------------------- Make sure this process is running from user=www
5938: my $wwwid=getpwnam('www');
5939: if ($wwwid!=$<) {
1.134 albertel 5940: my $emailto="$perlvar{'lonAdmEMail'},$perlvar{'lonSysEMail'}";
5941: my $subj="LON: $currenthostid User ID mismatch";
1.37 harris41 5942: system("echo 'User ID mismatch. lond must be run as user www.' |\
1.35 harris41 5943: mailto $emailto -s '$subj' > /dev/null");
5944: exit 1;
5945: }
5946:
1.19 www 5947: # --------------------------------------------- Check if other instance running
5948:
5949: my $pidfile="$perlvar{'lonDaemons'}/logs/lond.pid";
5950:
5951: if (-e $pidfile) {
5952: my $lfh=IO::File->new("$pidfile");
5953: my $pide=<$lfh>;
5954: chomp($pide);
1.29 harris41 5955: if (kill 0 => $pide) { die "already running"; }
1.19 www 5956: }
1.1 albertel 5957:
5958: # ------------------------------------------------------------- Read hosts file
5959:
5960:
5961:
5962: # establish SERVER socket, bind and listen.
5963: $server = IO::Socket::INET->new(LocalPort => $perlvar{'londPort'},
5964: Type => SOCK_STREAM,
5965: Proto => 'tcp',
5966: Reuse => 1,
5967: Listen => 10 )
1.29 harris41 5968: or die "making socket: $@\n";
1.1 albertel 5969:
5970: # --------------------------------------------------------- Do global variables
5971:
5972: # global variables
5973:
1.134 albertel 5974: my %children = (); # keys are current child process IDs
1.1 albertel 5975:
5976: sub REAPER { # takes care of dead children
5977: $SIG{CHLD} = \&REAPER;
1.165 albertel 5978: &status("Handling child death");
1.178 foxr 5979: my $pid;
5980: do {
5981: $pid = waitpid(-1,&WNOHANG());
5982: if (defined($children{$pid})) {
5983: &logthis("Child $pid died");
5984: delete($children{$pid});
1.183 albertel 5985: } elsif ($pid > 0) {
1.178 foxr 5986: &logthis("Unknown Child $pid died");
5987: }
5988: } while ( $pid > 0 );
5989: foreach my $child (keys(%children)) {
5990: $pid = waitpid($child,&WNOHANG());
5991: if ($pid > 0) {
5992: &logthis("Child $child - $pid looks like we missed it's death");
5993: delete($children{$pid});
5994: }
1.176 albertel 5995: }
1.165 albertel 5996: &status("Finished Handling child death");
1.1 albertel 5997: }
5998:
5999: sub HUNTSMAN { # signal handler for SIGINT
1.165 albertel 6000: &status("Killing children (INT)");
1.1 albertel 6001: local($SIG{CHLD}) = 'IGNORE'; # we're going to kill our children
6002: kill 'INT' => keys %children;
1.59 www 6003: &logthis("Free socket: ".shutdown($server,2)); # free up socket
1.1 albertel 6004: my $execdir=$perlvar{'lonDaemons'};
6005: unlink("$execdir/logs/lond.pid");
1.190 albertel 6006: &logthis("<font color='red'>CRITICAL: Shutting down</font>");
1.165 albertel 6007: &status("Done killing children");
1.1 albertel 6008: exit; # clean up with dignity
6009: }
6010:
6011: sub HUPSMAN { # signal handler for SIGHUP
6012: local($SIG{CHLD}) = 'IGNORE'; # we're going to kill our children
1.165 albertel 6013: &status("Killing children for restart (HUP)");
1.1 albertel 6014: kill 'INT' => keys %children;
1.59 www 6015: &logthis("Free socket: ".shutdown($server,2)); # free up socket
1.190 albertel 6016: &logthis("<font color='red'>CRITICAL: Restarting</font>");
1.134 albertel 6017: my $execdir=$perlvar{'lonDaemons'};
1.30 harris41 6018: unlink("$execdir/logs/lond.pid");
1.165 albertel 6019: &status("Restarting self (HUP)");
1.1 albertel 6020: exec("$execdir/lond"); # here we go again
6021: }
6022:
1.144 foxr 6023: #
1.148 foxr 6024: # Reload the Apache daemon's state.
1.150 foxr 6025: # This is done by invoking /home/httpd/perl/apachereload
6026: # a setuid perl script that can be root for us to do this job.
1.148 foxr 6027: #
6028: sub ReloadApache {
1.150 foxr 6029: my $execdir = $perlvar{'lonDaemons'};
6030: my $script = $execdir."/apachereload";
6031: system($script);
1.148 foxr 6032: }
6033:
6034: #
1.144 foxr 6035: # Called in response to a USR2 signal.
6036: # - Reread hosts.tab
6037: # - All children connected to hosts that were removed from hosts.tab
6038: # are killed via SIGINT
6039: # - All children connected to previously existing hosts are sent SIGUSR1
6040: # - Our internal hosts hash is updated to reflect the new contents of
6041: # hosts.tab causing connections from hosts added to hosts.tab to
6042: # now be honored.
6043: #
6044: sub UpdateHosts {
1.165 albertel 6045: &status("Reload hosts.tab");
1.147 foxr 6046: logthis('<font color="blue"> Updating connections </font>');
1.148 foxr 6047: #
6048: # The %children hash has the set of IP's we currently have children
6049: # on. These need to be matched against records in the hosts.tab
6050: # Any ip's no longer in the table get killed off they correspond to
6051: # either dropped or changed hosts. Note that the re-read of the table
6052: # will take care of new and changed hosts as connections come into being.
6053:
1.371 albertel 6054: &Apache::lonnet::reset_hosts_info();
1.148 foxr 6055:
1.368 albertel 6056: foreach my $child (keys(%children)) {
1.148 foxr 6057: my $childip = $children{$child};
1.374 albertel 6058: if ($childip ne '127.0.0.1'
6059: && !defined(&Apache::lonnet::get_hosts_from_ip($childip))) {
1.149 foxr 6060: logthis('<font color="blue"> UpdateHosts killing child '
6061: ." $child for ip $childip </font>");
1.148 foxr 6062: kill('INT', $child);
1.149 foxr 6063: } else {
6064: logthis('<font color="green"> keeping child for ip '
6065: ." $childip (pid=$child) </font>");
1.148 foxr 6066: }
6067: }
6068: ReloadApache;
1.165 albertel 6069: &status("Finished reloading hosts.tab");
1.144 foxr 6070: }
6071:
1.148 foxr 6072:
1.57 www 6073: sub checkchildren {
1.165 albertel 6074: &status("Checking on the children (sending signals)");
1.57 www 6075: &initnewstatus();
6076: &logstatus();
6077: &logthis('Going to check on the children');
1.134 albertel 6078: my $docdir=$perlvar{'lonDocRoot'};
1.61 harris41 6079: foreach (sort keys %children) {
1.221 albertel 6080: #sleep 1;
1.57 www 6081: unless (kill 'USR1' => $_) {
6082: &logthis ('Child '.$_.' is dead');
6083: &logstatus($$.' is dead');
1.221 albertel 6084: delete($children{$_});
1.57 www 6085: }
1.61 harris41 6086: }
1.63 www 6087: sleep 5;
1.212 foxr 6088: $SIG{ALRM} = sub { Debug("timeout");
6089: die "timeout"; };
1.113 albertel 6090: $SIG{__DIE__} = 'DEFAULT';
1.165 albertel 6091: &status("Checking on the children (waiting for reports)");
1.63 www 6092: foreach (sort keys %children) {
6093: unless (-e "$docdir/lon-status/londchld/$_.txt") {
1.113 albertel 6094: eval {
6095: alarm(300);
1.63 www 6096: &logthis('Child '.$_.' did not respond');
1.67 albertel 6097: kill 9 => $_;
1.131 albertel 6098: #$emailto="$perlvar{'lonAdmEMail'},$perlvar{'lonSysEMail'}";
6099: #$subj="LON: $currenthostid killed lond process $_";
6100: #my $result=`echo 'Killed lond process $_.' | mailto $emailto -s '$subj' > /dev/null`;
6101: #$execdir=$perlvar{'lonDaemons'};
6102: #$result=`/bin/cp $execdir/logs/lond.log $execdir/logs/lond.log.$_`;
1.221 albertel 6103: delete($children{$_});
1.113 albertel 6104: alarm(0);
6105: }
1.63 www 6106: }
6107: }
1.113 albertel 6108: $SIG{ALRM} = 'DEFAULT';
1.155 albertel 6109: $SIG{__DIE__} = \&catchexception;
1.165 albertel 6110: &status("Finished checking children");
1.221 albertel 6111: &logthis('Finished Checking children');
1.57 www 6112: }
6113:
1.1 albertel 6114: # --------------------------------------------------------------------- Logging
6115:
6116: sub logthis {
6117: my $message=shift;
6118: my $execdir=$perlvar{'lonDaemons'};
6119: my $fh=IO::File->new(">>$execdir/logs/lond.log");
6120: my $now=time;
6121: my $local=localtime($now);
1.58 www 6122: $lastlog=$local.': '.$message;
1.1 albertel 6123: print $fh "$local ($$): $message\n";
6124: }
6125:
1.77 foxr 6126: # ------------------------- Conditional log if $DEBUG true.
6127: sub Debug {
6128: my $message = shift;
6129: if($DEBUG) {
6130: &logthis($message);
6131: }
6132: }
1.161 foxr 6133:
6134: #
6135: # Sub to do replies to client.. this gives a hook for some
6136: # debug tracing too:
6137: # Parameters:
6138: # fd - File open on client.
6139: # reply - Text to send to client.
6140: # request - Original request from client.
6141: #
6142: sub Reply {
1.192 foxr 6143: my ($fd, $reply, $request) = @_;
1.387 albertel 6144: if (ref($reply)) {
6145: print $fd $$reply;
6146: print $fd "\n";
6147: if ($DEBUG) { Debug("Request was $request Reply was $$reply"); }
6148: } else {
6149: print $fd $reply;
6150: if ($DEBUG) { Debug("Request was $request Reply was $reply"); }
6151: }
1.212 foxr 6152: $Transactions++;
6153: }
6154:
6155:
6156: #
6157: # Sub to report a failure.
6158: # This function:
6159: # - Increments the failure statistic counters.
6160: # - Invokes Reply to send the error message to the client.
6161: # Parameters:
6162: # fd - File descriptor open on the client
6163: # reply - Reply text to emit.
6164: # request - The original request message (used by Reply
6165: # to debug if that's enabled.
6166: # Implicit outputs:
6167: # $Failures- The number of failures is incremented.
6168: # Reply (invoked here) sends a message to the
6169: # client:
6170: #
6171: sub Failure {
6172: my $fd = shift;
6173: my $reply = shift;
6174: my $request = shift;
6175:
6176: $Failures++;
6177: Reply($fd, $reply, $request); # That's simple eh?
1.161 foxr 6178: }
1.57 www 6179: # ------------------------------------------------------------------ Log status
6180:
6181: sub logstatus {
1.178 foxr 6182: &status("Doing logging");
6183: my $docdir=$perlvar{'lonDocRoot'};
6184: {
6185: my $fh=IO::File->new(">$docdir/lon-status/londchld/$$.txt");
1.200 matthew 6186: print $fh $status."\n".$lastlog."\n".time."\n$keymode";
1.178 foxr 6187: $fh->close();
6188: }
1.221 albertel 6189: &status("Finished $$.txt");
6190: {
6191: open(LOG,">>$docdir/lon-status/londstatus.txt");
6192: flock(LOG,LOCK_EX);
6193: print LOG $$."\t".$clientname."\t".$currenthostid."\t"
6194: .$status."\t".$lastlog."\t $keymode\n";
1.275 albertel 6195: flock(LOG,LOCK_UN);
1.221 albertel 6196: close(LOG);
6197: }
1.178 foxr 6198: &status("Finished logging");
1.57 www 6199: }
6200:
6201: sub initnewstatus {
6202: my $docdir=$perlvar{'lonDocRoot'};
6203: my $fh=IO::File->new(">$docdir/lon-status/londstatus.txt");
6204: my $now=time;
6205: my $local=localtime($now);
6206: print $fh "LOND status $local - parent $$\n\n";
1.64 www 6207: opendir(DIR,"$docdir/lon-status/londchld");
1.134 albertel 6208: while (my $filename=readdir(DIR)) {
1.64 www 6209: unlink("$docdir/lon-status/londchld/$filename");
6210: }
6211: closedir(DIR);
1.57 www 6212: }
6213:
6214: # -------------------------------------------------------------- Status setting
6215:
6216: sub status {
6217: my $what=shift;
6218: my $now=time;
6219: my $local=localtime($now);
1.178 foxr 6220: $status=$local.': '.$what;
6221: $0='lond: '.$what.' '.$local;
1.57 www 6222: }
1.11 www 6223:
1.13 www 6224: # -------------------------------------------------------------- Talk to lonsql
6225:
1.234 foxr 6226: sub sql_reply {
1.12 harris41 6227: my ($cmd)=@_;
1.234 foxr 6228: my $answer=&sub_sql_reply($cmd);
6229: if ($answer eq 'con_lost') { $answer=&sub_sql_reply($cmd); }
1.12 harris41 6230: return $answer;
6231: }
6232:
1.234 foxr 6233: sub sub_sql_reply {
1.12 harris41 6234: my ($cmd)=@_;
6235: my $unixsock="mysqlsock";
6236: my $peerfile="$perlvar{'lonSockDir'}/$unixsock";
6237: my $sclient=IO::Socket::UNIX->new(Peer =>"$peerfile",
6238: Type => SOCK_STREAM,
6239: Timeout => 10)
6240: or return "con_lost";
1.319 www 6241: print $sclient "$cmd:$currentdomainid\n";
1.12 harris41 6242: my $answer=<$sclient>;
6243: chomp($answer);
6244: if (!$answer) { $answer="con_lost"; }
6245: return $answer;
6246: }
6247:
1.1 albertel 6248: # --------------------------------------- Is this the home server of an author?
1.11 www 6249:
1.1 albertel 6250: sub ishome {
6251: my $author=shift;
6252: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
6253: my ($udom,$uname)=split(/\//,$author);
6254: my $proname=propath($udom,$uname);
6255: if (-e $proname) {
6256: return 'owner';
6257: } else {
6258: return 'not_owner';
6259: }
6260: }
6261:
6262: # ======================================================= Continue main program
6263: # ---------------------------------------------------- Fork once and dissociate
6264:
1.134 albertel 6265: my $fpid=fork;
1.1 albertel 6266: exit if $fpid;
1.29 harris41 6267: die "Couldn't fork: $!" unless defined ($fpid);
1.1 albertel 6268:
1.29 harris41 6269: POSIX::setsid() or die "Can't start new session: $!";
1.1 albertel 6270:
6271: # ------------------------------------------------------- Write our PID on disk
6272:
1.134 albertel 6273: my $execdir=$perlvar{'lonDaemons'};
1.1 albertel 6274: open (PIDSAVE,">$execdir/logs/lond.pid");
6275: print PIDSAVE "$$\n";
6276: close(PIDSAVE);
1.190 albertel 6277: &logthis("<font color='red'>CRITICAL: ---------- Starting ----------</font>");
1.57 www 6278: &status('Starting');
1.1 albertel 6279:
1.106 foxr 6280:
1.1 albertel 6281:
6282: # ----------------------------------------------------- Install signal handlers
6283:
1.57 www 6284:
1.1 albertel 6285: $SIG{CHLD} = \&REAPER;
6286: $SIG{INT} = $SIG{TERM} = \&HUNTSMAN;
6287: $SIG{HUP} = \&HUPSMAN;
1.57 www 6288: $SIG{USR1} = \&checkchildren;
1.144 foxr 6289: $SIG{USR2} = \&UpdateHosts;
1.106 foxr 6290:
1.148 foxr 6291: # Read the host hashes:
1.368 albertel 6292: &Apache::lonnet::load_hosts_tab();
1.447 raeburn 6293: my %iphost = &Apache::lonnet::get_iphost(1);
1.106 foxr 6294:
1.286 albertel 6295: my $dist=`$perlvar{'lonDaemons'}/distprobe`;
6296:
1.106 foxr 6297: # --------------------------------------------------------------
6298: # Accept connections. When a connection comes in, it is validated
6299: # and if good, a child process is created to process transactions
6300: # along the connection.
6301:
1.1 albertel 6302: while (1) {
1.165 albertel 6303: &status('Starting accept');
1.106 foxr 6304: $client = $server->accept() or next;
1.165 albertel 6305: &status('Accepted '.$client.' off to spawn');
1.386 albertel 6306: make_new_child($client);
1.165 albertel 6307: &status('Finished spawning');
1.1 albertel 6308: }
6309:
1.212 foxr 6310: sub make_new_child {
6311: my $pid;
6312: # my $cipher; # Now global
6313: my $sigset;
1.178 foxr 6314:
1.212 foxr 6315: $client = shift;
6316: &status('Starting new child '.$client);
6317: &logthis('<font color="green"> Attempting to start child ('.$client.
6318: ")</font>");
6319: # block signal for fork
6320: $sigset = POSIX::SigSet->new(SIGINT);
6321: sigprocmask(SIG_BLOCK, $sigset)
6322: or die "Can't block SIGINT for fork: $!\n";
1.178 foxr 6323:
1.212 foxr 6324: die "fork: $!" unless defined ($pid = fork);
1.178 foxr 6325:
1.212 foxr 6326: $client->sockopt(SO_KEEPALIVE, 1); # Enable monitoring of
6327: # connection liveness.
1.178 foxr 6328:
1.212 foxr 6329: #
6330: # Figure out who we're talking to so we can record the peer in
6331: # the pid hash.
6332: #
6333: my $caller = getpeername($client);
6334: my ($port,$iaddr);
6335: if (defined($caller) && length($caller) > 0) {
6336: ($port,$iaddr)=unpack_sockaddr_in($caller);
6337: } else {
6338: &logthis("Unable to determine who caller was, getpeername returned nothing");
6339: }
6340: if (defined($iaddr)) {
6341: $clientip = inet_ntoa($iaddr);
6342: Debug("Connected with $clientip");
6343: } else {
6344: &logthis("Unable to determine clientip");
6345: $clientip='Unavailable';
6346: }
6347:
6348: if ($pid) {
6349: # Parent records the child's birth and returns.
6350: sigprocmask(SIG_UNBLOCK, $sigset)
6351: or die "Can't unblock SIGINT for fork: $!\n";
6352: $children{$pid} = $clientip;
6353: &status('Started child '.$pid);
6354: return;
6355: } else {
6356: # Child can *not* return from this subroutine.
6357: $SIG{INT} = 'DEFAULT'; # make SIGINT kill us as it did before
6358: $SIG{CHLD} = 'DEFAULT'; #make this default so that pwauth returns
6359: #don't get intercepted
6360: $SIG{USR1}= \&logstatus;
6361: $SIG{ALRM}= \&timeout;
6362: $lastlog='Forked ';
6363: $status='Forked';
1.178 foxr 6364:
1.212 foxr 6365: # unblock signals
6366: sigprocmask(SIG_UNBLOCK, $sigset)
6367: or die "Can't unblock SIGINT for fork: $!\n";
1.178 foxr 6368:
1.212 foxr 6369: # my $tmpsnum=0; # Now global
6370: #---------------------------------------------------- kerberos 5 initialization
6371: &Authen::Krb5::init_context();
1.359 raeburn 6372: unless (($dist eq 'fedora5') || ($dist eq 'fedora4') ||
6373: ($dist eq 'fedora6') || ($dist eq 'suse9.3')) {
1.286 albertel 6374: &Authen::Krb5::init_ets();
6375: }
1.209 albertel 6376:
1.212 foxr 6377: &status('Accepted connection');
6378: # =============================================================================
6379: # do something with the connection
6380: # -----------------------------------------------------------------------------
6381: # see if we know client and 'check' for spoof IP by ineffective challenge
1.178 foxr 6382:
1.278 albertel 6383: my $outsideip=$clientip;
6384: if ($clientip eq '127.0.0.1') {
1.368 albertel 6385: $outsideip=&Apache::lonnet::get_host_ip($perlvar{'lonHostID'});
1.278 albertel 6386: }
1.412 foxr 6387: &ReadManagerTable();
1.368 albertel 6388: my $clientrec=defined(&Apache::lonnet::get_hosts_from_ip($outsideip));
1.278 albertel 6389: my $ismanager=($managers{$outsideip} ne undef);
1.432 raeburn 6390: $clientname = "[unknown]";
1.212 foxr 6391: if($clientrec) { # Establish client type.
6392: $ConnectionType = "client";
1.368 albertel 6393: $clientname = (&Apache::lonnet::get_hosts_from_ip($outsideip))[-1];
1.212 foxr 6394: if($ismanager) {
6395: $ConnectionType = "both";
6396: }
6397: } else {
6398: $ConnectionType = "manager";
1.278 albertel 6399: $clientname = $managers{$outsideip};
1.212 foxr 6400: }
6401: my $clientok;
1.178 foxr 6402:
1.212 foxr 6403: if ($clientrec || $ismanager) {
6404: &status("Waiting for init from $clientip $clientname");
6405: &logthis('<font color="yellow">INFO: Connection, '.
6406: $clientip.
6407: " ($clientname) connection type = $ConnectionType </font>" );
6408: &status("Connecting $clientip ($clientname))");
6409: my $remotereq=<$client>;
6410: chomp($remotereq);
6411: Debug("Got init: $remotereq");
1.337 albertel 6412:
1.212 foxr 6413: if ($remotereq =~ /^init/) {
6414: &sethost("sethost:$perlvar{'lonHostID'}");
6415: #
6416: # If the remote is attempting a local init... give that a try:
6417: #
1.432 raeburn 6418: (my $i, my $inittype, $clientversion) = split(/:/, $remotereq);
1.209 albertel 6419:
1.212 foxr 6420: # If the connection type is ssl, but I didn't get my
6421: # certificate files yet, then I'll drop back to
6422: # insecure (if allowed).
6423:
6424: if($inittype eq "ssl") {
6425: my ($ca, $cert) = lonssl::CertificateFile;
6426: my $kfile = lonssl::KeyFile;
6427: if((!$ca) ||
6428: (!$cert) ||
6429: (!$kfile)) {
6430: $inittype = ""; # This forces insecure attempt.
6431: &logthis("<font color=\"blue\"> Certificates not "
6432: ."installed -- trying insecure auth</font>");
1.224 foxr 6433: } else { # SSL certificates are in place so
1.212 foxr 6434: } # Leave the inittype alone.
6435: }
6436:
6437: if($inittype eq "local") {
1.432 raeburn 6438: $clientversion = $perlvar{'lonVersion'};
1.212 foxr 6439: my $key = LocalConnection($client, $remotereq);
6440: if($key) {
6441: Debug("Got local key $key");
6442: $clientok = 1;
6443: my $cipherkey = pack("H32", $key);
6444: $cipher = new IDEA($cipherkey);
6445: print $client "ok:local\n";
1.442 www 6446: &logthis('<font color="green">'
1.212 foxr 6447: . "Successful local authentication </font>");
6448: $keymode = "local"
1.178 foxr 6449: } else {
1.212 foxr 6450: Debug("Failed to get local key");
6451: $clientok = 0;
6452: shutdown($client, 3);
6453: close $client;
1.178 foxr 6454: }
1.212 foxr 6455: } elsif ($inittype eq "ssl") {
6456: my $key = SSLConnection($client);
6457: if ($key) {
6458: $clientok = 1;
6459: my $cipherkey = pack("H32", $key);
6460: $cipher = new IDEA($cipherkey);
6461: &logthis('<font color="green">'
6462: ."Successfull ssl authentication with $clientname </font>");
6463: $keymode = "ssl";
6464:
1.178 foxr 6465: } else {
1.212 foxr 6466: $clientok = 0;
6467: close $client;
1.178 foxr 6468: }
1.212 foxr 6469:
6470: } else {
6471: my $ok = InsecureConnection($client);
6472: if($ok) {
6473: $clientok = 1;
6474: &logthis('<font color="green">'
6475: ."Successful insecure authentication with $clientname </font>");
6476: print $client "ok\n";
6477: $keymode = "insecure";
1.178 foxr 6478: } else {
1.212 foxr 6479: &logthis('<font color="yellow">'
6480: ."Attempted insecure connection disallowed </font>");
6481: close $client;
6482: $clientok = 0;
1.178 foxr 6483:
6484: }
6485: }
1.212 foxr 6486: } else {
6487: &logthis(
6488: "<font color='blue'>WARNING: "
6489: ."$clientip failed to initialize: >$remotereq< </font>");
6490: &status('No init '.$clientip);
6491: }
6492:
6493: } else {
6494: &logthis(
6495: "<font color='blue'>WARNING: Unknown client $clientip</font>");
6496: &status('Hung up on '.$clientip);
6497: }
6498:
6499: if ($clientok) {
6500: # ---------------- New known client connecting, could mean machine online again
1.368 albertel 6501: if (&Apache::lonnet::get_host_ip($currenthostid) ne $clientip
1.367 albertel 6502: && $clientip ne '127.0.0.1') {
1.375 albertel 6503: &Apache::lonnet::reconlonc($clientname);
1.212 foxr 6504: }
6505: &logthis("<font color='green'>Established connection: $clientname</font>");
6506: &status('Will listen to '.$clientname);
6507: # ------------------------------------------------------------ Process requests
6508: my $keep_going = 1;
6509: my $user_input;
1.448 raeburn 6510: my $clienthost = &Apache::lonnet::hostname($clientname);
6511: my $clientserverhomeID = &Apache::lonnet::get_server_homeID($clienthost);
6512: $clienthomedom = &Apache::lonnet::host_domain($clientserverhomeID);
1.212 foxr 6513: while(($user_input = get_request) && $keep_going) {
6514: alarm(120);
6515: Debug("Main: Got $user_input\n");
6516: $keep_going = &process_request($user_input);
1.178 foxr 6517: alarm(0);
1.212 foxr 6518: &status('Listening to '.$clientname." ($keymode)");
1.161 foxr 6519: }
1.212 foxr 6520:
1.59 www 6521: # --------------------------------------------- client unknown or fishy, refuse
1.212 foxr 6522: } else {
1.161 foxr 6523: print $client "refused\n";
6524: $client->close();
1.190 albertel 6525: &logthis("<font color='blue'>WARNING: "
1.161 foxr 6526: ."Rejected client $clientip, closing connection</font>");
6527: }
1.212 foxr 6528: }
1.161 foxr 6529:
1.1 albertel 6530: # =============================================================================
1.161 foxr 6531:
1.190 albertel 6532: &logthis("<font color='red'>CRITICAL: "
1.161 foxr 6533: ."Disconnect from $clientip ($clientname)</font>");
6534:
6535:
6536: # this exit is VERY important, otherwise the child will become
6537: # a producer of more and more children, forking yourself into
6538: # process death.
6539: exit;
1.106 foxr 6540:
1.78 foxr 6541: }
1.261 foxr 6542: #
6543: # Determine if a user is an author for the indicated domain.
6544: #
6545: # Parameters:
6546: # domain - domain to check in .
6547: # user - Name of user to check.
6548: #
6549: # Return:
6550: # 1 - User is an author for domain.
6551: # 0 - User is not an author for domain.
6552: sub is_author {
6553: my ($domain, $user) = @_;
6554:
6555: &Debug("is_author: $user @ $domain");
6556:
6557: my $hashref = &tie_user_hash($domain, $user, "roles",
6558: &GDBM_READER());
6559:
6560: # Author role should show up as a key /domain/_au
1.78 foxr 6561:
1.321 albertel 6562: my $key = "/$domain/_au";
6563: my $value;
6564: if (defined($hashref)) {
6565: $value = $hashref->{$key};
6566: }
1.78 foxr 6567:
1.261 foxr 6568: if(defined($value)) {
6569: &Debug("$user @ $domain is an author");
6570: }
6571:
6572: return defined($value);
6573: }
1.78 foxr 6574: #
6575: # Checks to see if the input roleput request was to set
6576: # an author role. If so, invokes the lchtmldir script to set
6577: # up a correct public_html
6578: # Parameters:
6579: # request - The request sent to the rolesput subchunk.
6580: # We're looking for /domain/_au
6581: # domain - The domain in which the user is having roles doctored.
6582: # user - Name of the user for which the role is being put.
6583: # authtype - The authentication type associated with the user.
6584: #
1.289 albertel 6585: sub manage_permissions {
1.192 foxr 6586: my ($request, $domain, $user, $authtype) = @_;
1.78 foxr 6587:
1.261 foxr 6588: &Debug("manage_permissions: $request $domain $user $authtype");
6589:
1.78 foxr 6590: # See if the request is of the form /$domain/_au
1.289 albertel 6591: if($request =~ /^(\/\Q$domain\E\/_au)$/) { # It's an author rolesput...
1.78 foxr 6592: my $execdir = $perlvar{'lonDaemons'};
6593: my $userhome= "/home/$user" ;
1.134 albertel 6594: &logthis("system $execdir/lchtmldir $userhome $user $authtype");
1.261 foxr 6595: &Debug("Setting homedir permissions for $userhome");
1.78 foxr 6596: system("$execdir/lchtmldir $userhome $user $authtype");
6597: }
6598: }
1.222 foxr 6599:
6600:
6601: #
6602: # Return the full path of a user password file, whether it exists or not.
6603: # Parameters:
6604: # domain - Domain in which the password file lives.
6605: # user - name of the user.
6606: # Returns:
6607: # Full passwd path:
6608: #
6609: sub password_path {
6610: my ($domain, $user) = @_;
1.264 albertel 6611: return &propath($domain, $user).'/passwd';
1.222 foxr 6612: }
6613:
6614: # Password Filename
6615: # Returns the path to a passwd file given domain and user... only if
6616: # it exists.
6617: # Parameters:
6618: # domain - Domain in which to search.
6619: # user - username.
6620: # Returns:
6621: # - If the password file exists returns its path.
6622: # - If the password file does not exist, returns undefined.
6623: #
6624: sub password_filename {
6625: my ($domain, $user) = @_;
6626:
6627: Debug ("PasswordFilename called: dom = $domain user = $user");
6628:
6629: my $path = &password_path($domain, $user);
6630: Debug("PasswordFilename got path: $path");
6631: if(-e $path) {
6632: return $path;
6633: } else {
6634: return undef;
6635: }
6636: }
6637:
6638: #
6639: # Rewrite the contents of the user's passwd file.
6640: # Parameters:
6641: # domain - domain of the user.
6642: # name - User's name.
6643: # contents - New contents of the file.
6644: # Returns:
6645: # 0 - Failed.
6646: # 1 - Success.
6647: #
6648: sub rewrite_password_file {
6649: my ($domain, $user, $contents) = @_;
6650:
6651: my $file = &password_filename($domain, $user);
6652: if (defined $file) {
6653: my $pf = IO::File->new(">$file");
6654: if($pf) {
6655: print $pf "$contents\n";
6656: return 1;
6657: } else {
6658: return 0;
6659: }
6660: } else {
6661: return 0;
6662: }
6663:
6664: }
6665:
1.78 foxr 6666: #
1.222 foxr 6667: # get_auth_type - Determines the authorization type of a user in a domain.
1.78 foxr 6668:
6669: # Returns the authorization type or nouser if there is no such user.
6670: #
1.436 raeburn 6671: sub get_auth_type {
1.192 foxr 6672: my ($domain, $user) = @_;
1.78 foxr 6673:
1.222 foxr 6674: Debug("get_auth_type( $domain, $user ) \n");
1.78 foxr 6675: my $proname = &propath($domain, $user);
6676: my $passwdfile = "$proname/passwd";
6677: if( -e $passwdfile ) {
6678: my $pf = IO::File->new($passwdfile);
6679: my $realpassword = <$pf>;
6680: chomp($realpassword);
1.79 foxr 6681: Debug("Password info = $realpassword\n");
1.78 foxr 6682: my ($authtype, $contentpwd) = split(/:/, $realpassword);
1.79 foxr 6683: Debug("Authtype = $authtype, content = $contentpwd\n");
1.259 raeburn 6684: return "$authtype:$contentpwd";
1.224 foxr 6685: } else {
1.79 foxr 6686: Debug("Returning nouser");
1.78 foxr 6687: return "nouser";
6688: }
1.1 albertel 6689: }
6690:
1.220 foxr 6691: #
6692: # Validate a user given their domain, name and password. This utility
6693: # function is used by both AuthenticateHandler and ChangePasswordHandler
6694: # to validate the login credentials of a user.
6695: # Parameters:
6696: # $domain - The domain being logged into (this is required due to
6697: # the capability for multihomed systems.
6698: # $user - The name of the user being validated.
6699: # $password - The user's propoposed password.
6700: #
6701: # Returns:
6702: # 1 - The domain,user,pasword triplet corresponds to a valid
6703: # user.
6704: # 0 - The domain,user,password triplet is not a valid user.
6705: #
6706: sub validate_user {
1.396 raeburn 6707: my ($domain, $user, $password, $checkdefauth) = @_;
1.220 foxr 6708:
6709: # Why negative ~pi you may well ask? Well this function is about
6710: # authentication, and therefore very important to get right.
6711: # I've initialized the flag that determines whether or not I've
6712: # validated correctly to a value it's not supposed to get.
6713: # At the end of this function. I'll ensure that it's not still that
6714: # value so we don't just wind up returning some accidental value
6715: # as a result of executing an unforseen code path that
1.249 foxr 6716: # did not set $validated. At the end of valid execution paths,
6717: # validated shoule be 1 for success or 0 for failuer.
1.220 foxr 6718:
6719: my $validated = -3.14159;
6720:
6721: # How we authenticate is determined by the type of authentication
6722: # the user has been assigned. If the authentication type is
6723: # "nouser", the user does not exist so we will return 0.
6724:
1.222 foxr 6725: my $contents = &get_auth_type($domain, $user);
1.220 foxr 6726: my ($howpwd, $contentpwd) = split(/:/, $contents);
6727:
6728: my $null = pack("C",0); # Used by kerberos auth types.
6729:
1.395 raeburn 6730: if ($howpwd eq 'nouser') {
1.396 raeburn 6731: if ($checkdefauth) {
6732: my %domdefaults = &Apache::lonnet::get_domain_defaults($domain);
6733: if ($domdefaults{'auth_def'} eq 'localauth') {
6734: $howpwd = $domdefaults{'auth_def'};
6735: $contentpwd = $domdefaults{'auth_arg_def'};
6736: } elsif ((($domdefaults{'auth_def'} eq 'krb4') ||
6737: ($domdefaults{'auth_def'} eq 'krb5')) &&
6738: ($domdefaults{'auth_arg_def'} ne '')) {
6739: $howpwd = $domdefaults{'auth_def'};
6740: $contentpwd = $domdefaults{'auth_arg_def'};
6741: }
1.395 raeburn 6742: }
6743: }
1.220 foxr 6744: if ($howpwd ne 'nouser') {
6745: if($howpwd eq "internal") { # Encrypted is in local password file.
6746: $validated = (crypt($password, $contentpwd) eq $contentpwd);
6747: }
6748: elsif ($howpwd eq "unix") { # User is a normal unix user.
6749: $contentpwd = (getpwnam($user))[1];
6750: if($contentpwd) {
6751: if($contentpwd eq 'x') { # Shadow password file...
6752: my $pwauth_path = "/usr/local/sbin/pwauth";
6753: open PWAUTH, "|$pwauth_path" or
6754: die "Cannot invoke authentication";
6755: print PWAUTH "$user\n$password\n";
6756: close PWAUTH;
6757: $validated = ! $?;
6758:
6759: } else { # Passwords in /etc/passwd.
6760: $validated = (crypt($password,
6761: $contentpwd) eq $contentpwd);
6762: }
6763: } else {
6764: $validated = 0;
6765: }
1.439 raeburn 6766: } elsif ($howpwd eq "krb4") { # user is in kerberos 4 auth. domain.
6767: my $checkwithkrb5 = 0;
6768: if ($dist =~/^fedora(\d+)$/) {
6769: if ($1 > 11) {
6770: $checkwithkrb5 = 1;
6771: }
6772: } elsif ($dist =~ /^suse([\d.]+)$/) {
6773: if ($1 > 11.1) {
6774: $checkwithkrb5 = 1;
6775: }
6776: }
6777: if ($checkwithkrb5) {
6778: $validated = &krb5_authen($password,$null,$user,$contentpwd);
6779: } else {
6780: $validated = &krb4_authen($password,$null,$user,$contentpwd);
6781: }
1.224 foxr 6782: } elsif ($howpwd eq "krb5") { # User is in kerberos 5 auth. domain.
1.439 raeburn 6783: $validated = &krb5_authen($password,$null,$user,$contentpwd);
1.224 foxr 6784: } elsif ($howpwd eq "localauth") {
1.220 foxr 6785: # Authenticate via installation specific authentcation method:
6786: $validated = &localauth::localauth($user,
6787: $password,
1.353 albertel 6788: $contentpwd,
6789: $domain);
1.358 albertel 6790: if ($validated < 0) {
1.357 albertel 6791: &logthis("localauth for $contentpwd $user:$domain returned a $validated");
6792: $validated = 0;
6793: }
1.224 foxr 6794: } else { # Unrecognized auth is also bad.
1.220 foxr 6795: $validated = 0;
6796: }
6797: } else {
6798: $validated = 0;
6799: }
6800: #
6801: # $validated has the correct stat of the authentication:
6802: #
6803:
6804: unless ($validated != -3.14159) {
1.249 foxr 6805: # I >really really< want to know if this happens.
6806: # since it indicates that user authentication is badly
6807: # broken in some code path.
6808: #
6809: die "ValidateUser - failed to set the value of validated $domain, $user $password";
1.220 foxr 6810: }
6811: return $validated;
6812: }
6813:
1.439 raeburn 6814: sub krb4_authen {
6815: my ($password,$null,$user,$contentpwd) = @_;
6816: my $validated = 0;
6817: if (!($password =~ /$null/) ) { # Null password not allowed.
6818: eval {
6819: require Authen::Krb4;
6820: };
6821: if (!$@) {
6822: my $k4error = &Authen::Krb4::get_pw_in_tkt($user,
6823: "",
6824: $contentpwd,,
6825: 'krbtgt',
6826: $contentpwd,
6827: 1,
6828: $password);
6829: if(!$k4error) {
6830: $validated = 1;
6831: } else {
6832: $validated = 0;
6833: &logthis('krb4: '.$user.', '.$contentpwd.', '.
6834: &Authen::Krb4::get_err_txt($Authen::Krb4::error));
6835: }
6836: } else {
6837: $validated = krb5_authen($password,$null,$user,$contentpwd);
6838: }
6839: }
6840: return $validated;
6841: }
6842:
6843: sub krb5_authen {
6844: my ($password,$null,$user,$contentpwd) = @_;
6845: my $validated = 0;
6846: if(!($password =~ /$null/)) { # Null password not allowed.
6847: my $krbclient = &Authen::Krb5::parse_name($user.'@'
6848: .$contentpwd);
6849: my $krbservice = "krbtgt/".$contentpwd."\@".$contentpwd;
6850: my $krbserver = &Authen::Krb5::parse_name($krbservice);
6851: my $credentials= &Authen::Krb5::cc_default();
6852: $credentials->initialize(&Authen::Krb5::parse_name($user.'@'
6853: .$contentpwd));
6854: my $krbreturn;
6855: if (exists(&Authen::Krb5::get_init_creds_password)) {
6856: $krbreturn =
6857: &Authen::Krb5::get_init_creds_password($krbclient,$password,
6858: $krbservice);
6859: $validated = (ref($krbreturn) eq 'Authen::Krb5::Creds');
6860: } else {
6861: $krbreturn =
6862: &Authen::Krb5::get_in_tkt_with_password($krbclient,$krbserver,
6863: $password,$credentials);
6864: $validated = ($krbreturn == 1);
6865: }
6866: if (!$validated) {
6867: &logthis('krb5: '.$user.', '.$contentpwd.', '.
6868: &Authen::Krb5::error());
6869: }
6870: }
6871: return $validated;
6872: }
1.220 foxr 6873:
1.84 albertel 6874: sub addline {
6875: my ($fname,$hostid,$ip,$newline)=@_;
6876: my $contents;
6877: my $found=0;
1.355 albertel 6878: my $expr='^'.quotemeta($hostid).':'.quotemeta($ip).':';
1.134 albertel 6879: my $sh;
1.84 albertel 6880: if ($sh=IO::File->new("$fname.subscription")) {
6881: while (my $subline=<$sh>) {
6882: if ($subline !~ /$expr/) {$contents.= $subline;} else {$found=1;}
6883: }
6884: $sh->close();
6885: }
6886: $sh=IO::File->new(">$fname.subscription");
6887: if ($contents) { print $sh $contents; }
6888: if ($newline) { print $sh $newline; }
6889: $sh->close();
6890: return $found;
1.86 www 6891: }
6892:
1.234 foxr 6893: sub get_chat {
1.324 raeburn 6894: my ($cdom,$cname,$udom,$uname,$group)=@_;
1.310 albertel 6895:
1.87 www 6896: my @entries=();
1.324 raeburn 6897: my $namespace = 'nohist_chatroom';
6898: my $namespace_inroom = 'nohist_inchatroom';
1.335 albertel 6899: if ($group ne '') {
1.324 raeburn 6900: $namespace .= '_'.$group;
6901: $namespace_inroom .= '_'.$group;
6902: }
6903: my $hashref = &tie_user_hash($cdom, $cname, $namespace,
1.310 albertel 6904: &GDBM_READER());
6905: if ($hashref) {
6906: @entries=map { $_.':'.$hashref->{$_} } sort(keys(%$hashref));
1.311 albertel 6907: &untie_user_hash($hashref);
1.123 www 6908: }
1.124 www 6909: my @participants=();
1.134 albertel 6910: my $cutoff=time-60;
1.324 raeburn 6911: $hashref = &tie_user_hash($cdom, $cname, $namespace_inroom,
1.310 albertel 6912: &GDBM_WRCREAT());
6913: if ($hashref) {
6914: $hashref->{$uname.':'.$udom}=time;
6915: foreach my $user (sort(keys(%$hashref))) {
6916: if ($hashref->{$user}>$cutoff) {
6917: push(@participants, 'active_participant:'.$user);
1.123 www 6918: }
6919: }
1.311 albertel 6920: &untie_user_hash($hashref);
1.86 www 6921: }
1.124 www 6922: return (@participants,@entries);
1.86 www 6923: }
6924:
1.234 foxr 6925: sub chat_add {
1.324 raeburn 6926: my ($cdom,$cname,$newchat,$group)=@_;
1.88 albertel 6927: my @entries=();
1.142 www 6928: my $time=time;
1.324 raeburn 6929: my $namespace = 'nohist_chatroom';
6930: my $logfile = 'chatroom.log';
1.335 albertel 6931: if ($group ne '') {
1.324 raeburn 6932: $namespace .= '_'.$group;
6933: $logfile = 'chatroom_'.$group.'.log';
6934: }
6935: my $hashref = &tie_user_hash($cdom, $cname, $namespace,
1.310 albertel 6936: &GDBM_WRCREAT());
6937: if ($hashref) {
6938: @entries=map { $_.':'.$hashref->{$_} } sort(keys(%$hashref));
1.88 albertel 6939: my ($lastid)=($entries[$#entries]=~/^(\w+)\:/);
6940: my ($thentime,$idnum)=split(/\_/,$lastid);
6941: my $newid=$time.'_000000';
6942: if ($thentime==$time) {
6943: $idnum=~s/^0+//;
6944: $idnum++;
6945: $idnum=substr('000000'.$idnum,-6,6);
6946: $newid=$time.'_'.$idnum;
6947: }
1.310 albertel 6948: $hashref->{$newid}=$newchat;
1.88 albertel 6949: my $expired=$time-3600;
1.310 albertel 6950: foreach my $comment (keys(%$hashref)) {
6951: my ($thistime) = ($comment=~/(\d+)\_/);
1.88 albertel 6952: if ($thistime<$expired) {
1.310 albertel 6953: delete $hashref->{$comment};
1.88 albertel 6954: }
6955: }
1.310 albertel 6956: {
6957: my $proname=&propath($cdom,$cname);
1.324 raeburn 6958: if (open(CHATLOG,">>$proname/$logfile")) {
1.310 albertel 6959: print CHATLOG ("$time:".&unescape($newchat)."\n");
6960: }
6961: close(CHATLOG);
1.142 www 6962: }
1.311 albertel 6963: &untie_user_hash($hashref);
1.86 www 6964: }
1.84 albertel 6965: }
6966:
6967: sub unsub {
6968: my ($fname,$clientip)=@_;
6969: my $result;
1.188 foxr 6970: my $unsubs = 0; # Number of successful unsubscribes:
6971:
6972:
6973: # An old way subscriptions were handled was to have a
6974: # subscription marker file:
6975:
6976: Debug("Attempting unlink of $fname.$clientname");
1.161 foxr 6977: if (unlink("$fname.$clientname")) {
1.188 foxr 6978: $unsubs++; # Successful unsub via marker file.
6979: }
6980:
6981: # The more modern way to do it is to have a subscription list
6982: # file:
6983:
1.84 albertel 6984: if (-e "$fname.subscription") {
1.161 foxr 6985: my $found=&addline($fname,$clientname,$clientip,'');
1.188 foxr 6986: if ($found) {
6987: $unsubs++;
6988: }
6989: }
6990:
6991: # If either or both of these mechanisms succeeded in unsubscribing a
6992: # resource we can return ok:
6993:
6994: if($unsubs) {
6995: $result = "ok\n";
1.84 albertel 6996: } else {
1.188 foxr 6997: $result = "not_subscribed\n";
1.84 albertel 6998: }
1.188 foxr 6999:
1.84 albertel 7000: return $result;
7001: }
7002:
1.101 www 7003: sub currentversion {
7004: my $fname=shift;
7005: my $version=-1;
7006: my $ulsdir='';
7007: if ($fname=~/^(.+)\/[^\/]+$/) {
7008: $ulsdir=$1;
7009: }
1.114 albertel 7010: my ($fnamere1,$fnamere2);
7011: # remove version if already specified
1.101 www 7012: $fname=~s/\.\d+\.(\w+(?:\.meta)*)$/\.$1/;
1.114 albertel 7013: # get the bits that go before and after the version number
7014: if ( $fname=~/^(.*\.)(\w+(?:\.meta)*)$/ ) {
7015: $fnamere1=$1;
7016: $fnamere2='.'.$2;
7017: }
1.101 www 7018: if (-e $fname) { $version=1; }
7019: if (-e $ulsdir) {
1.134 albertel 7020: if(-d $ulsdir) {
7021: if (opendir(LSDIR,$ulsdir)) {
7022: my $ulsfn;
7023: while ($ulsfn=readdir(LSDIR)) {
1.101 www 7024: # see if this is a regular file (ignore links produced earlier)
1.134 albertel 7025: my $thisfile=$ulsdir.'/'.$ulsfn;
7026: unless (-l $thisfile) {
1.160 www 7027: if ($thisfile=~/\Q$fnamere1\E(\d+)\Q$fnamere2\E$/) {
1.134 albertel 7028: if ($1>$version) { $version=$1; }
7029: }
7030: }
7031: }
7032: closedir(LSDIR);
7033: $version++;
7034: }
7035: }
7036: }
7037: return $version;
1.101 www 7038: }
7039:
7040: sub thisversion {
7041: my $fname=shift;
7042: my $version=-1;
7043: if ($fname=~/\.(\d+)\.\w+(?:\.meta)*$/) {
7044: $version=$1;
7045: }
7046: return $version;
7047: }
7048:
1.84 albertel 7049: sub subscribe {
7050: my ($userinput,$clientip)=@_;
7051: my $result;
1.293 albertel 7052: my ($cmd,$fname)=split(/:/,$userinput,2);
1.84 albertel 7053: my $ownership=&ishome($fname);
7054: if ($ownership eq 'owner') {
1.101 www 7055: # explitly asking for the current version?
7056: unless (-e $fname) {
7057: my $currentversion=¤tversion($fname);
7058: if (&thisversion($fname)==$currentversion) {
7059: if ($fname=~/^(.+)\.\d+\.(\w+(?:\.meta)*)$/) {
7060: my $root=$1;
7061: my $extension=$2;
7062: symlink($root.'.'.$extension,
7063: $root.'.'.$currentversion.'.'.$extension);
1.102 www 7064: unless ($extension=~/\.meta$/) {
7065: symlink($root.'.'.$extension.'.meta',
7066: $root.'.'.$currentversion.'.'.$extension.'.meta');
7067: }
1.101 www 7068: }
7069: }
7070: }
1.84 albertel 7071: if (-e $fname) {
7072: if (-d $fname) {
7073: $result="directory\n";
7074: } else {
1.161 foxr 7075: if (-e "$fname.$clientname") {&unsub($fname,$clientip);}
1.134 albertel 7076: my $now=time;
1.161 foxr 7077: my $found=&addline($fname,$clientname,$clientip,
7078: "$clientname:$clientip:$now\n");
1.84 albertel 7079: if ($found) { $result="$fname\n"; }
7080: # if they were subscribed to only meta data, delete that
7081: # subscription, when you subscribe to a file you also get
7082: # the metadata
7083: unless ($fname=~/\.meta$/) { &unsub("$fname.meta",$clientip); }
7084: $fname=~s/\/home\/httpd\/html\/res/raw/;
1.373 albertel 7085: $fname="http://".&Apache::lonnet::hostname($perlvar{'lonHostID'})."/".$fname;
1.84 albertel 7086: $result="$fname\n";
7087: }
7088: } else {
7089: $result="not_found\n";
7090: }
7091: } else {
7092: $result="rejected\n";
7093: }
7094: return $result;
7095: }
1.287 foxr 7096: # Change the passwd of a unix user. The caller must have
7097: # first verified that the user is a loncapa user.
7098: #
7099: # Parameters:
7100: # user - Unix user name to change.
7101: # pass - New password for the user.
7102: # Returns:
7103: # ok - if success
7104: # other - Some meaningfule error message string.
7105: # NOTE:
7106: # invokes a setuid script to change the passwd.
7107: sub change_unix_password {
7108: my ($user, $pass) = @_;
7109:
7110: &Debug("change_unix_password");
7111: my $execdir=$perlvar{'lonDaemons'};
7112: &Debug("Opening lcpasswd pipeline");
7113: my $pf = IO::File->new("|$execdir/lcpasswd > "
7114: ."$perlvar{'lonDaemons'}"
7115: ."/logs/lcpasswd.log");
7116: print $pf "$user\n$pass\n$pass\n";
7117: close $pf;
7118: my $err = $?;
7119: return ($err < @passwderrors) ? $passwderrors[$err] :
7120: "pwchange_falure - unknown error";
7121:
7122:
7123: }
7124:
1.91 albertel 7125:
7126: sub make_passwd_file {
1.98 foxr 7127: my ($uname, $umode,$npass,$passfilename)=@_;
1.390 raeburn 7128: my $result="ok";
1.91 albertel 7129: if ($umode eq 'krb4' or $umode eq 'krb5') {
7130: {
7131: my $pf = IO::File->new(">$passfilename");
1.261 foxr 7132: if ($pf) {
7133: print $pf "$umode:$npass\n";
7134: } else {
7135: $result = "pass_file_failed_error";
7136: }
1.91 albertel 7137: }
7138: } elsif ($umode eq 'internal') {
7139: my $salt=time;
7140: $salt=substr($salt,6,2);
7141: my $ncpass=crypt($npass,$salt);
7142: {
7143: &Debug("Creating internal auth");
7144: my $pf = IO::File->new(">$passfilename");
1.261 foxr 7145: if($pf) {
7146: print $pf "internal:$ncpass\n";
7147: } else {
7148: $result = "pass_file_failed_error";
7149: }
1.91 albertel 7150: }
7151: } elsif ($umode eq 'localauth') {
7152: {
7153: my $pf = IO::File->new(">$passfilename");
1.261 foxr 7154: if($pf) {
7155: print $pf "localauth:$npass\n";
7156: } else {
7157: $result = "pass_file_failed_error";
7158: }
1.91 albertel 7159: }
7160: } elsif ($umode eq 'unix') {
7161: {
1.186 foxr 7162: #
7163: # Don't allow the creation of privileged accounts!!! that would
7164: # be real bad!!!
7165: #
7166: my $uid = getpwnam($uname);
7167: if((defined $uid) && ($uid == 0)) {
7168: &logthis(">>>Attempted to create privilged account blocked");
7169: return "no_priv_account_error\n";
7170: }
7171:
1.223 foxr 7172: my $execpath ="$perlvar{'lonDaemons'}/"."lcuseradd";
1.224 foxr 7173:
7174: my $lc_error_file = $execdir."/tmp/lcuseradd".$$.".status";
1.91 albertel 7175: {
7176: &Debug("Executing external: ".$execpath);
1.98 foxr 7177: &Debug("user = ".$uname.", Password =". $npass);
1.132 matthew 7178: my $se = IO::File->new("|$execpath > $perlvar{'lonDaemons'}/logs/lcuseradd.log");
1.91 albertel 7179: print $se "$uname\n";
7180: print $se "$npass\n";
7181: print $se "$npass\n";
1.223 foxr 7182: print $se "$lc_error_file\n"; # Status -> unique file.
1.97 foxr 7183: }
1.285 foxr 7184: if (-r $lc_error_file) {
7185: &Debug("Opening error file: $lc_error_file");
7186: my $error = IO::File->new("< $lc_error_file");
7187: my $useraddok = <$error>;
7188: $error->close;
7189: unlink($lc_error_file);
7190:
7191: chomp $useraddok;
7192:
7193: if($useraddok > 0) {
7194: my $error_text = &lcuseraddstrerror($useraddok);
7195: &logthis("Failed lcuseradd: $error_text");
1.390 raeburn 7196: $result = "lcuseradd_failed:$error_text";
1.285 foxr 7197: } else {
7198: my $pf = IO::File->new(">$passfilename");
7199: if($pf) {
7200: print $pf "unix:\n";
7201: } else {
7202: $result = "pass_file_failed_error";
7203: }
7204: }
1.224 foxr 7205: } else {
1.285 foxr 7206: &Debug("Could not locate lcuseradd error: $lc_error_file");
7207: $result="bug_lcuseradd_no_output_file";
1.91 albertel 7208: }
7209: }
7210: } elsif ($umode eq 'none') {
7211: {
1.223 foxr 7212: my $pf = IO::File->new("> $passfilename");
1.261 foxr 7213: if($pf) {
7214: print $pf "none:\n";
7215: } else {
7216: $result = "pass_file_failed_error";
7217: }
1.91 albertel 7218: }
7219: } else {
1.390 raeburn 7220: $result="auth_mode_error";
1.91 albertel 7221: }
7222: return $result;
1.121 albertel 7223: }
7224:
1.265 albertel 7225: sub convert_photo {
7226: my ($start,$dest)=@_;
7227: system("convert $start $dest");
7228: }
7229:
1.121 albertel 7230: sub sethost {
7231: my ($remotereq) = @_;
7232: my (undef,$hostid)=split(/:/,$remotereq);
1.322 albertel 7233: # ignore sethost if we are already correct
7234: if ($hostid eq $currenthostid) {
7235: return 'ok';
7236: }
7237:
1.121 albertel 7238: if (!defined($hostid)) { $hostid=$perlvar{'lonHostID'}; }
1.368 albertel 7239: if (&Apache::lonnet::get_host_ip($perlvar{'lonHostID'})
7240: eq &Apache::lonnet::get_host_ip($hostid)) {
1.200 matthew 7241: $currenthostid =$hostid;
1.369 albertel 7242: $currentdomainid=&Apache::lonnet::host_domain($hostid);
1.443 www 7243: # &logthis("Setting hostid to $hostid, and domain to $currentdomainid");
1.121 albertel 7244: } else {
7245: &logthis("Requested host id $hostid not an alias of ".
7246: $perlvar{'lonHostID'}." refusing connection");
7247: return 'unable_to_set';
7248: }
7249: return 'ok';
7250: }
7251:
7252: sub version {
7253: my ($userinput)=@_;
7254: $remoteVERSION=(split(/:/,$userinput))[1];
7255: return "version:$VERSION";
1.127 albertel 7256: }
1.178 foxr 7257:
1.447 raeburn 7258: sub get_usersession_config {
7259: my ($dom,$name) = @_;
7260: my ($usersessionconf,$cached)=&Apache::lonnet::is_cached_new($name,$dom);
7261: if (defined($cached)) {
7262: return $usersessionconf;
7263: } else {
7264: my %domconfig = &Apache::lonnet::get_dom('configuration',['usersessions'],$dom);
7265: if (ref($domconfig{'usersessions'}) eq 'HASH') {
7266: &Apache::lonnet::do_cache_new($name,$dom,$domconfig{'usersessions'},3600);
7267: return $domconfig{'usersessions'};
7268: }
7269: }
7270: return;
7271: }
1.200 matthew 7272:
1.61 harris41 7273: # ----------------------------------- POD (plain old documentation, CPAN style)
7274:
7275: =head1 NAME
7276:
7277: lond - "LON Daemon" Server (port "LOND" 5663)
7278:
7279: =head1 SYNOPSIS
7280:
1.74 harris41 7281: Usage: B<lond>
7282:
7283: Should only be run as user=www. This is a command-line script which
7284: is invoked by B<loncron>. There is no expectation that a typical user
7285: will manually start B<lond> from the command-line. (In other words,
7286: DO NOT START B<lond> YOURSELF.)
1.61 harris41 7287:
7288: =head1 DESCRIPTION
7289:
1.74 harris41 7290: There are two characteristics associated with the running of B<lond>,
7291: PROCESS MANAGEMENT (starting, stopping, handling child processes)
7292: and SERVER-SIDE ACTIVITIES (password authentication, user creation,
7293: subscriptions, etc). These are described in two large
7294: sections below.
7295:
7296: B<PROCESS MANAGEMENT>
7297:
1.61 harris41 7298: Preforker - server who forks first. Runs as a daemon. HUPs.
7299: Uses IDEA encryption
7300:
1.74 harris41 7301: B<lond> forks off children processes that correspond to the other servers
7302: in the network. Management of these processes can be done at the
7303: parent process level or the child process level.
7304:
7305: B<logs/lond.log> is the location of log messages.
7306:
7307: The process management is now explained in terms of linux shell commands,
7308: subroutines internal to this code, and signal assignments:
7309:
7310: =over 4
7311:
7312: =item *
7313:
7314: PID is stored in B<logs/lond.pid>
7315:
7316: This is the process id number of the parent B<lond> process.
7317:
7318: =item *
7319:
7320: SIGTERM and SIGINT
7321:
7322: Parent signal assignment:
7323: $SIG{INT} = $SIG{TERM} = \&HUNTSMAN;
7324:
7325: Child signal assignment:
7326: $SIG{INT} = 'DEFAULT'; (and SIGTERM is DEFAULT also)
7327: (The child dies and a SIGALRM is sent to parent, awaking parent from slumber
7328: to restart a new child.)
7329:
7330: Command-line invocations:
7331: B<kill> B<-s> SIGTERM I<PID>
7332: B<kill> B<-s> SIGINT I<PID>
7333:
7334: Subroutine B<HUNTSMAN>:
7335: This is only invoked for the B<lond> parent I<PID>.
7336: This kills all the children, and then the parent.
7337: The B<lonc.pid> file is cleared.
7338:
7339: =item *
7340:
7341: SIGHUP
7342:
7343: Current bug:
7344: This signal can only be processed the first time
7345: on the parent process. Subsequent SIGHUP signals
7346: have no effect.
7347:
7348: Parent signal assignment:
7349: $SIG{HUP} = \&HUPSMAN;
7350:
7351: Child signal assignment:
7352: none (nothing happens)
7353:
7354: Command-line invocations:
7355: B<kill> B<-s> SIGHUP I<PID>
7356:
7357: Subroutine B<HUPSMAN>:
7358: This is only invoked for the B<lond> parent I<PID>,
7359: This kills all the children, and then the parent.
7360: The B<lond.pid> file is cleared.
7361:
7362: =item *
7363:
7364: SIGUSR1
7365:
7366: Parent signal assignment:
7367: $SIG{USR1} = \&USRMAN;
7368:
7369: Child signal assignment:
7370: $SIG{USR1}= \&logstatus;
7371:
7372: Command-line invocations:
7373: B<kill> B<-s> SIGUSR1 I<PID>
7374:
7375: Subroutine B<USRMAN>:
7376: When invoked for the B<lond> parent I<PID>,
7377: SIGUSR1 is sent to all the children, and the status of
7378: each connection is logged.
1.144 foxr 7379:
7380: =item *
7381:
7382: SIGUSR2
7383:
7384: Parent Signal assignment:
7385: $SIG{USR2} = \&UpdateHosts
7386:
7387: Child signal assignment:
7388: NONE
7389:
1.74 harris41 7390:
7391: =item *
7392:
7393: SIGCHLD
7394:
7395: Parent signal assignment:
7396: $SIG{CHLD} = \&REAPER;
7397:
7398: Child signal assignment:
7399: none
7400:
7401: Command-line invocations:
7402: B<kill> B<-s> SIGCHLD I<PID>
7403:
7404: Subroutine B<REAPER>:
7405: This is only invoked for the B<lond> parent I<PID>.
7406: Information pertaining to the child is removed.
7407: The socket port is cleaned up.
7408:
7409: =back
7410:
7411: B<SERVER-SIDE ACTIVITIES>
7412:
7413: Server-side information can be accepted in an encrypted or non-encrypted
7414: method.
7415:
7416: =over 4
7417:
7418: =item ping
7419:
7420: Query a client in the hosts.tab table; "Are you there?"
7421:
7422: =item pong
7423:
7424: Respond to a ping query.
7425:
7426: =item ekey
7427:
7428: Read in encrypted key, make cipher. Respond with a buildkey.
7429:
7430: =item load
7431:
7432: Respond with CPU load based on a computation upon /proc/loadavg.
7433:
7434: =item currentauth
7435:
7436: Reply with current authentication information (only over an
7437: encrypted channel).
7438:
7439: =item auth
7440:
7441: Only over an encrypted channel, reply as to whether a user's
7442: authentication information can be validated.
7443:
7444: =item passwd
7445:
7446: Allow for a password to be set.
7447:
7448: =item makeuser
7449:
7450: Make a user.
7451:
7452: =item passwd
7453:
7454: Allow for authentication mechanism and password to be changed.
7455:
7456: =item home
1.61 harris41 7457:
1.74 harris41 7458: Respond to a question "are you the home for a given user?"
7459:
7460: =item update
7461:
7462: Update contents of a subscribed resource.
7463:
7464: =item unsubscribe
7465:
7466: The server is unsubscribing from a resource.
7467:
7468: =item subscribe
7469:
7470: The server is subscribing to a resource.
7471:
7472: =item log
7473:
7474: Place in B<logs/lond.log>
7475:
7476: =item put
7477:
7478: stores hash in namespace
7479:
1.230 foxr 7480: =item rolesputy
1.74 harris41 7481:
7482: put a role into a user's environment
7483:
7484: =item get
7485:
7486: returns hash with keys from array
7487: reference filled in from namespace
7488:
7489: =item eget
7490:
7491: returns hash with keys from array
7492: reference filled in from namesp (encrypts the return communication)
7493:
7494: =item rolesget
7495:
7496: get a role from a user's environment
7497:
7498: =item del
7499:
7500: deletes keys out of array from namespace
7501:
7502: =item keys
7503:
7504: returns namespace keys
7505:
7506: =item dump
7507:
7508: dumps the complete (or key matching regexp) namespace into a hash
7509:
7510: =item store
7511:
7512: stores hash permanently
7513: for this url; hashref needs to be given and should be a \%hashname; the
7514: remaining args aren't required and if they aren't passed or are '' they will
7515: be derived from the ENV
7516:
7517: =item restore
7518:
7519: returns a hash for a given url
7520:
7521: =item querysend
7522:
7523: Tells client about the lonsql process that has been launched in response
7524: to a sent query.
7525:
7526: =item queryreply
7527:
7528: Accept information from lonsql and make appropriate storage in temporary
7529: file space.
7530:
7531: =item idput
7532:
7533: Defines usernames as corresponding to IDs. (These "IDs" are unique identifiers
7534: for each student, defined perhaps by the institutional Registrar.)
7535:
7536: =item idget
7537:
7538: Returns usernames corresponding to IDs. (These "IDs" are unique identifiers
7539: for each student, defined perhaps by the institutional Registrar.)
7540:
7541: =item tmpput
7542:
7543: Accept and store information in temporary space.
7544:
7545: =item tmpget
7546:
7547: Send along temporarily stored information.
7548:
7549: =item ls
7550:
7551: List part of a user's directory.
7552:
1.135 foxr 7553: =item pushtable
7554:
7555: Pushes a file in /home/httpd/lonTab directory. Currently limited to:
7556: hosts.tab and domain.tab. The old file is copied to *.tab.backup but
7557: must be restored manually in case of a problem with the new table file.
7558: pushtable requires that the request be encrypted and validated via
7559: ValidateManager. The form of the command is:
7560: enc:pushtable tablename <tablecontents> \n
7561: where pushtable, tablename and <tablecontents> will be encrypted, but \n is a
7562: cleartext newline.
7563:
1.74 harris41 7564: =item Hanging up (exit or init)
7565:
7566: What to do when a client tells the server that they (the client)
7567: are leaving the network.
7568:
7569: =item unknown command
7570:
7571: If B<lond> is sent an unknown command (not in the list above),
7572: it replys to the client "unknown_cmd".
1.135 foxr 7573:
1.74 harris41 7574:
7575: =item UNKNOWN CLIENT
7576:
7577: If the anti-spoofing algorithm cannot verify the client,
7578: the client is rejected (with a "refused" message sent
7579: to the client, and the connection is closed.
7580:
7581: =back
1.61 harris41 7582:
7583: =head1 PREREQUISITES
7584:
7585: IO::Socket
7586: IO::File
7587: Apache::File
7588: POSIX
7589: Crypt::IDEA
7590: LWP::UserAgent()
7591: GDBM_File
7592: Authen::Krb4
1.91 albertel 7593: Authen::Krb5
1.61 harris41 7594:
7595: =head1 COREQUISITES
7596:
7597: =head1 OSNAMES
7598:
7599: linux
7600:
7601: =head1 SCRIPT CATEGORIES
7602:
7603: Server/Process
7604:
7605: =cut
1.409 foxr 7606:
7607:
7608: =pod
7609:
7610: =head1 LOG MESSAGES
7611:
7612: The messages below can be emitted in the lond log. This log is located
7613: in ~httpd/perl/logs/lond.log Many log messages have HTML encapsulation
7614: to provide coloring if examined from inside a web page. Some do not.
7615: Where color is used, the colors are; Red for sometihhng to get excited
7616: about and to follow up on. Yellow for something to keep an eye on to
7617: be sure it does not get worse, Green,and Blue for informational items.
7618:
7619: In the discussions below, sometimes reference is made to ~httpd
7620: when describing file locations. There isn't really an httpd
7621: user, however there is an httpd directory that gets installed in the
7622: place that user home directories go. On linux, this is usually
7623: (always?) /home/httpd.
7624:
7625:
7626: Some messages are colorless. These are usually (not always)
7627: Green/Blue color level messages.
7628:
7629: =over 2
7630:
7631: =item (Red) LocalConnection rejecting non local: <ip> ne 127.0.0.1
7632:
7633: A local connection negotiation was attempted by
7634: a host whose IP address was not 127.0.0.1.
7635: The socket is closed and the child will exit.
7636: lond has three ways to establish an encyrption
7637: key with a client:
7638:
7639: =over 2
7640:
7641: =item local
7642:
7643: The key is written and read from a file.
7644: This is only valid for connections from localhost.
7645:
7646: =item insecure
7647:
7648: The key is generated by the server and
7649: transmitted to the client.
7650:
7651: =item ssl (secure)
7652:
7653: An ssl connection is negotiated with the client,
7654: the key is generated by the server and sent to the
7655: client across this ssl connection before the
7656: ssl connectionis terminated and clear text
7657: transmission resumes.
7658:
7659: =back
7660:
7661: =item (Red) LocalConnection: caller is insane! init = <init> and type = <type>
7662:
7663: The client is local but has not sent an initialization
7664: string that is the literal "init:local" The connection
7665: is closed and the child exits.
7666:
7667: =item Red CRITICAL Can't get key file <error>
7668:
7669: SSL key negotiation is being attempted but the call to
7670: lonssl::KeyFile failed. This usually means that the
7671: configuration file is not correctly defining or protecting
7672: the directories/files lonCertificateDirectory or
7673: lonnetPrivateKey
7674: <error> is a string that describes the reason that
7675: the key file could not be located.
7676:
7677: =item (Red) CRITICAL Can't get certificates <error>
7678:
7679: SSL key negotiation failed because we were not able to retrives our certificate
7680: or the CA's certificate in the call to lonssl::CertificateFile
7681: <error> is the textual reason this failed. Usual reasons:
7682:
7683: =over 2
7684:
7685: =item Apache config file for loncapa incorrect:
7686:
7687: one of the variables
7688: lonCertificateDirectory, lonnetCertificateAuthority, or lonnetCertificate
7689: undefined or incorrect
7690:
7691: =item Permission error:
7692:
7693: The directory pointed to by lonCertificateDirectory is not readable by lond
7694:
7695: =item Permission error:
7696:
7697: Files in the directory pointed to by lonCertificateDirectory are not readable by lond.
7698:
7699: =item Installation error:
7700:
7701: Either the certificate authority file or the certificate have not
7702: been installed in lonCertificateDirectory.
7703:
7704: =item (Red) CRITICAL SSL Socket promotion failed: <err>
7705:
7706: The promotion of the connection from plaintext to SSL failed
7707: <err> is the reason for the failure. There are two
7708: system calls involved in the promotion (one of which failed),
7709: a dup to produce
7710: a second fd on the raw socket over which the encrypted data
7711: will flow and IO::SOcket::SSL->new_from_fd which creates
7712: the SSL connection on the duped fd.
7713:
7714: =item (Blue) WARNING client did not respond to challenge
7715:
7716: This occurs on an insecure (non SSL) connection negotiation request.
7717: lond generates some number from the time, the PID and sends it to
7718: the client. The client must respond by echoing this information back.
7719: If the client does not do so, that's a violation of the challenge
7720: protocols and the connection will be failed.
7721:
7722: =item (Red) No manager table. Nobody can manage!!
7723:
7724: lond has the concept of privileged hosts that
7725: can perform remote management function such
7726: as update the hosts.tab. The manager hosts
7727: are described in the
7728: ~httpd/lonTabs/managers.tab file.
7729: this message is logged if this file is missing.
7730:
7731:
7732: =item (Green) Registering manager <dnsname> as <cluster_name> with <ipaddress>
7733:
7734: Reports the successful parse and registration
7735: of a specific manager.
7736:
7737: =item Green existing host <clustername:dnsname>
7738:
7739: The manager host is already defined in the hosts.tab
7740: the information in that table, rather than the info in the
7741: manager table will be used to determine the manager's ip.
7742:
7743: =item (Red) Unable to craete <filename>
7744:
7745: lond has been asked to create new versions of an administrative
7746: file (by a manager). When this is done, the new file is created
7747: in a temp file and then renamed into place so that there are always
7748: usable administrative files, even if the update fails. This failure
7749: message means that the temp file could not be created.
7750: The update is abandoned, and the old file is available for use.
7751:
7752: =item (Green) CopyFile from <oldname> to <newname> failed
7753:
7754: In an update of administrative files, the copy of the existing file to a
7755: backup file failed. The installation of the new file may still succeed,
7756: but there will not be a back up file to rever to (this should probably
7757: be yellow).
7758:
7759: =item (Green) Pushfile: backed up <oldname> to <newname>
7760:
7761: See above, the backup of the old administrative file succeeded.
7762:
7763: =item (Red) Pushfile: Unable to install <filename> <reason>
7764:
7765: The new administrative file could not be installed. In this case,
7766: the old administrative file is still in use.
7767:
7768: =item (Green) Installed new < filename>.
7769:
7770: The new administrative file was successfullly installed.
7771:
7772: =item (Red) Reinitializing lond pid=<pid>
7773:
7774: The lonc child process <pid> will be sent a USR2
7775: signal.
7776:
7777: =item (Red) Reinitializing self
7778:
7779: We've been asked to re-read our administrative files,and
7780: are doing so.
7781:
7782: =item (Yellow) error:Invalid process identifier <ident>
7783:
7784: A reinit command was received, but the target part of the
7785: command was not valid. It must be either
7786: 'lond' or 'lonc' but was <ident>
7787:
7788: =item (Green) isValideditCommand checking: Command = <command> Key = <key> newline = <newline>
7789:
7790: Checking to see if lond has been handed a valid edit
7791: command. It is possible the edit command is not valid
7792: in that case there are no log messages to indicate that.
7793:
7794: =item Result of password change for <username> pwchange_success
7795:
7796: The password for <username> was
7797: successfully changed.
7798:
7799: =item Unable to open <user> passwd to change password
7800:
7801: Could not rewrite the
7802: internal password file for a user
7803:
7804: =item Result of password change for <user> : <result>
7805:
7806: A unix password change for <user> was attempted
7807: and the pipe returned <result>
7808:
7809: =item LWP GET: <message> for <fname> (<remoteurl>)
7810:
7811: The lightweight process fetch for a resource failed
7812: with <message> the local filename that should
7813: have existed/been created was <fname> the
7814: corresponding URI: <remoteurl> This is emitted in several
7815: places.
7816:
7817: =item Unable to move <transname> to <destname>
7818:
7819: From fetch_user_file_handler - the user file was replicated but could not
7820: be mv'd to its final location.
7821:
7822: =item Looking for <domain> <username>
7823:
7824: From user_has_session_handler - This should be a Debug call instead
7825: it indicates lond is about to check whether the specified user has a
7826: session active on the specified domain on the local host.
7827:
7828: =item Client <ip> (<name>) hanging up: <input>
7829:
7830: lond has been asked to exit by its client. The <ip> and <name> identify the
7831: client systemand <input> is the full exit command sent to the server.
7832:
7833: =item Red CRITICAL: ABNORMAL EXIT. child <pid> for server <hostname> died through a crass with this error->[<message>].
7834:
7835: A lond child terminated. NOte that this termination can also occur when the
7836: child receives the QUIT or DIE signals. <pid> is the process id of the child,
7837: <hostname> the host lond is working for, and <message> the reason the child died
7838: to the best of our ability to get it (I would guess that any numeric value
7839: represents and errno value). This is immediately followed by
7840:
7841: =item Famous last words: Catching exception - <log>
7842:
7843: Where log is some recent information about the state of the child.
7844:
7845: =item Red CRITICAL: TIME OUT <pid>
7846:
7847: Some timeout occured for server <pid>. THis is normally a timeout on an LWP
7848: doing an HTTP::GET.
7849:
7850: =item child <pid> died
7851:
7852: The reaper caught a SIGCHILD for the lond child process <pid>
7853: This should be modified to also display the IP of the dying child
7854: $children{$pid}
7855:
7856: =item Unknown child 0 died
7857: A child died but the wait for it returned a pid of zero which really should not
7858: ever happen.
7859:
7860: =item Child <which> - <pid> looks like we missed it's death
7861:
7862: When a sigchild is received, the reaper process checks all children to see if they are
7863: alive. If children are dying quite quickly, the lack of signal queuing can mean
7864: that a signal hearalds the death of more than one child. If so this message indicates
7865: which other one died. <which> is the ip of a dead child
7866:
7867: =item Free socket: <shutdownretval>
7868:
7869: The HUNTSMAN sub was called due to a SIGINT in a child process. The socket is being shutdown.
7870: for whatever reason, <shutdownretval> is printed but in fact shutdown() is not documented
7871: to return anything. This is followed by:
7872:
7873: =item Red CRITICAL: Shutting down
7874:
7875: Just prior to exit.
7876:
7877: =item Free socket: <shutdownretval>
7878:
7879: The HUPSMAN sub was called due to a SIGHUP. all children get killsed, and lond execs itself.
7880: This is followed by:
7881:
7882: =item (Red) CRITICAL: Restarting
7883:
7884: lond is about to exec itself to restart.
7885:
7886: =item (Blue) Updating connections
7887:
7888: (In response to a USR2). All the children (except the one for localhost)
7889: are about to be killed, the hosts tab reread, and Apache reloaded via apachereload.
7890:
7891: =item (Blue) UpdateHosts killing child <pid> for ip <ip>
7892:
7893: Due to USR2 as above.
7894:
7895: =item (Green) keeping child for ip <ip> (pid = <pid>)
7896:
7897: In response to USR2 as above, the child indicated is not being restarted because
7898: it's assumed that we'll always need a child for the localhost.
7899:
7900:
7901: =item Going to check on the children
7902:
7903: Parent is about to check on the health of the child processes.
7904: Note that this is in response to a USR1 sent to the parent lond.
7905: there may be one or more of the next two messages:
7906:
7907: =item <pid> is dead
7908:
7909: A child that we have in our child hash as alive has evidently died.
7910:
7911: =item Child <pid> did not respond
7912:
7913: In the health check the child <pid> did not update/produce a pid_.txt
7914: file when sent it's USR1 signal. That process is killed with a 9 signal, as it's
7915: assumed to be hung in some un-fixable way.
7916:
7917: =item Finished checking children
7918:
7919: Master processs's USR1 processing is cojmplete.
7920:
7921: =item (Red) CRITICAL: ------- Starting ------
7922:
7923: (There are more '-'s on either side). Lond has forked itself off to
7924: form a new session and is about to start actual initialization.
7925:
7926: =item (Green) Attempting to start child (<client>)
7927:
7928: Started a new child process for <client>. Client is IO::Socket object
7929: connected to the child. This was as a result of a TCP/IP connection from a client.
7930:
7931: =item Unable to determine who caller was, getpeername returned nothing
7932:
7933: In child process initialization. either getpeername returned undef or
7934: a zero sized object was returned. Processing continues, but in my opinion,
7935: this should be cause for the child to exit.
7936:
7937: =item Unable to determine clientip
7938:
7939: In child process initialization. The peer address from getpeername was not defined.
7940: The client address is stored as "Unavailable" and processing continues.
7941:
7942: =item (Yellow) INFO: Connection <ip> <name> connection type = <type>
7943:
7944: In child initialization. A good connectionw as received from <ip>.
7945:
7946: =over 2
7947:
7948: =item <name>
7949:
7950: is the name of the client from hosts.tab.
7951:
7952: =item <type>
7953:
7954: Is the connection type which is either
7955:
7956: =over 2
7957:
7958: =item manager
7959:
7960: The connection is from a manager node, not in hosts.tab
7961:
7962: =item client
7963:
7964: the connection is from a non-manager in the hosts.tab
7965:
7966: =item both
7967:
7968: The connection is from a manager in the hosts.tab.
7969:
7970: =back
7971:
7972: =back
7973:
7974: =item (Blue) Certificates not installed -- trying insecure auth
7975:
7976: One of the certificate file, key file or
7977: certificate authority file could not be found for a client attempting
7978: SSL connection intiation. COnnection will be attemptied in in-secure mode.
7979: (this would be a system with an up to date lond that has not gotten a
7980: certificate from us).
7981:
7982: =item (Green) Successful local authentication
7983:
7984: A local connection successfully negotiated the encryption key.
7985: In this case the IDEA key is in a file (that is hopefully well protected).
7986:
7987: =item (Green) Successful ssl authentication with <client>
7988:
7989: The client (<client> is the peer's name in hosts.tab), has successfully
7990: negotiated an SSL connection with this child process.
7991:
7992: =item (Green) Successful insecure authentication with <client>
7993:
7994:
7995: The client has successfully negotiated an insecure connection withthe child process.
7996:
7997: =item (Yellow) Attempted insecure connection disallowed
7998:
7999: The client attempted and failed to successfully negotiate a successful insecure
8000: connection. This can happen either because the variable londAllowInsecure is false
8001: or undefined, or becuse the child did not successfully echo back the challenge
8002: string.
8003:
8004:
8005: =back
8006:
1.441 raeburn 8007: =back
8008:
1.409 foxr 8009:
8010: =cut
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