Annotation of loncom/lond, revision 1.489.2.23
1.1 albertel 1: #!/usr/bin/perl
2: # The LearningOnline Network
3: # lond "LON Daemon" Server (port "LOND" 5663)
1.60 www 4: #
1.489.2.23! raeburn 5: # $Id: lond,v 1.489.2.22 2016/08/16 17:45:01 raeburn Exp $
1.60 www 6: #
7: # Copyright Michigan State University Board of Trustees
8: #
9: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
10: #
11: # LON-CAPA is free software; you can redistribute it and/or modify
12: # it under the terms of the GNU General Public License as published by
1.167 foxr 13: # the Free Software Foundation; either version 2 of the License, or
1.60 www 14: # (at your option) any later version.
15: #
16: # LON-CAPA is distributed in the hope that it will be useful,
17: # but WITHOUT ANY WARRANTY; without even the implied warranty of
1.469 foxr 18:
1.60 www 19: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20: # GNU General Public License for more details.
21: #
22: # You should have received a copy of the GNU General Public License
23: # along with LON-CAPA; if not, write to the Free Software
1.178 foxr 24: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
1.60 www 25: #
26: # /home/httpd/html/adm/gpl.txt
27: #
1.161 foxr 28:
29:
1.60 www 30: # http://www.lon-capa.org/
31: #
1.54 harris41 32:
1.134 albertel 33: use strict;
1.80 harris41 34: use lib '/home/httpd/lib/perl/';
1.325 albertel 35: use LONCAPA;
1.80 harris41 36: use LONCAPA::Configuration;
1.489.2.4 raeburn 37: use LONCAPA::Lond;
1.80 harris41 38:
1.1 albertel 39: use IO::Socket;
40: use IO::File;
1.126 albertel 41: #use Apache::File;
1.1 albertel 42: use POSIX;
43: use Crypt::IDEA;
44: use LWP::UserAgent();
1.347 raeburn 45: use Digest::MD5 qw(md5_hex);
1.3 www 46: use GDBM_File;
1.91 albertel 47: use Authen::Krb5;
1.49 albertel 48: use localauth;
1.193 raeburn 49: use localenroll;
1.265 albertel 50: use localstudentphoto;
1.143 foxr 51: use File::Copy;
1.292 albertel 52: use File::Find;
1.200 matthew 53: use LONCAPA::lonlocal;
54: use LONCAPA::lonssl;
1.221 albertel 55: use Fcntl qw(:flock);
1.383 raeburn 56: use Apache::lonnet;
1.472 raeburn 57: use Mail::Send;
1.489.2.21 raeburn 58: use Crypt::Eksblowfish::Bcrypt;
59: use Digest::SHA;
60: use Encode;
1.1 albertel 61:
1.463 foxr 62: my $DEBUG = 0; # Non zero to enable debug log entries.
1.77 foxr 63:
1.57 www 64: my $status='';
65: my $lastlog='';
66:
1.489.2.23! raeburn 67: my $VERSION='$Revision: 1.489.2.22 $'; #' stupid emacs
1.121 albertel 68: my $remoteVERSION;
1.214 foxr 69: my $currenthostid="default";
1.115 albertel 70: my $currentdomainid;
1.134 albertel 71:
72: my $client;
1.200 matthew 73: my $clientip; # IP address of client.
74: my $clientname; # LonCAPA name of client.
1.448 raeburn 75: my $clientversion; # LonCAPA version running on client.
76: my $clienthomedom; # LonCAPA domain of homeID for client.
77: # primary library server.
1.140 foxr 78:
1.134 albertel 79: my $server;
1.200 matthew 80:
81: my $keymode;
1.198 foxr 82:
1.207 foxr 83: my $cipher; # Cipher key negotiated with client
84: my $tmpsnum = 0; # Id of tmpputs.
85:
1.178 foxr 86: #
87: # Connection type is:
88: # client - All client actions are allowed
89: # manager - only management functions allowed.
90: # both - Both management and client actions are allowed
91: #
1.161 foxr 92:
1.178 foxr 93: my $ConnectionType;
1.161 foxr 94:
1.178 foxr 95: my %managers; # Ip -> manager names
1.161 foxr 96:
1.178 foxr 97: my %perlvar; # Will have the apache conf defined perl vars.
1.134 albertel 98:
1.480 raeburn 99: my $dist;
100:
1.178 foxr 101: #
1.207 foxr 102: # The hash below is used for command dispatching, and is therefore keyed on the request keyword.
103: # Each element of the hash contains a reference to an array that contains:
104: # A reference to a sub that executes the request corresponding to the keyword.
105: # A flag that is true if the request must be encoded to be acceptable.
106: # A mask with bits as follows:
107: # CLIENT_OK - Set when the function is allowed by ordinary clients
108: # MANAGER_OK - Set when the function is allowed to manager clients.
109: #
110: my $CLIENT_OK = 1;
111: my $MANAGER_OK = 2;
112: my %Dispatcher;
113:
114:
115: #
1.178 foxr 116: # The array below are password error strings."
117: #
118: my $lastpwderror = 13; # Largest error number from lcpasswd.
119: my @passwderrors = ("ok",
1.287 foxr 120: "pwchange_failure - lcpasswd must be run as user 'www'",
121: "pwchange_failure - lcpasswd got incorrect number of arguments",
122: "pwchange_failure - lcpasswd did not get the right nubmer of input text lines",
123: "pwchange_failure - lcpasswd too many simultaneous pwd changes in progress",
124: "pwchange_failure - lcpasswd User does not exist.",
125: "pwchange_failure - lcpasswd Incorrect current passwd",
126: "pwchange_failure - lcpasswd Unable to su to root.",
127: "pwchange_failure - lcpasswd Cannot set new passwd.",
128: "pwchange_failure - lcpasswd Username has invalid characters",
129: "pwchange_failure - lcpasswd Invalid characters in password",
130: "pwchange_failure - lcpasswd User already exists",
131: "pwchange_failure - lcpasswd Something went wrong with user addition.",
132: "pwchange_failure - lcpasswd Password mismatch",
133: "pwchange_failure - lcpasswd Error filename is invalid");
1.97 foxr 134:
135:
1.412 foxr 136: # This array are the errors from lcinstallfile:
137:
138: my @installerrors = ("ok",
139: "Initial user id of client not that of www",
140: "Usage error, not enough command line arguments",
1.489.2.5 raeburn 141: "Source filename does not exist",
142: "Destination filename does not exist",
1.412 foxr 143: "Some file operation failed",
144: "Invalid table filename."
145: );
1.207 foxr 146:
147: #
148: # Statistics that are maintained and dislayed in the status line.
149: #
1.212 foxr 150: my $Transactions = 0; # Number of attempted transactions.
151: my $Failures = 0; # Number of transcations failed.
1.207 foxr 152:
153: # ResetStatistics:
154: # Resets the statistics counters:
155: #
156: sub ResetStatistics {
157: $Transactions = 0;
158: $Failures = 0;
159: }
160:
1.200 matthew 161: #------------------------------------------------------------------------
162: #
163: # LocalConnection
164: # Completes the formation of a locally authenticated connection.
165: # This function will ensure that the 'remote' client is really the
166: # local host. If not, the connection is closed, and the function fails.
167: # If so, initcmd is parsed for the name of a file containing the
168: # IDEA session key. The fie is opened, read, deleted and the session
169: # key returned to the caller.
170: #
171: # Parameters:
172: # $Socket - Socket open on client.
173: # $initcmd - The full text of the init command.
174: #
175: # Returns:
176: # IDEA session key on success.
177: # undef on failure.
178: #
179: sub LocalConnection {
180: my ($Socket, $initcmd) = @_;
1.373 albertel 181: Debug("Attempting local connection: $initcmd client: $clientip");
1.277 albertel 182: if($clientip ne "127.0.0.1") {
1.200 matthew 183: &logthis('<font color="red"> LocalConnection rejecting non local: '
1.373 albertel 184: ."$clientip ne 127.0.0.1 </font>");
1.200 matthew 185: close $Socket;
186: return undef;
1.224 foxr 187: } else {
1.200 matthew 188: chomp($initcmd); # Get rid of \n in filename.
189: my ($init, $type, $name) = split(/:/, $initcmd);
190: Debug(" Init command: $init $type $name ");
191:
192: # Require that $init = init, and $type = local: Otherwise
193: # the caller is insane:
194:
195: if(($init ne "init") && ($type ne "local")) {
196: &logthis('<font color = "red"> LocalConnection: caller is insane! '
197: ."init = $init, and type = $type </font>");
198: close($Socket);;
199: return undef;
200:
201: }
202: # Now get the key filename:
203:
204: my $IDEAKey = lonlocal::ReadKeyFile($name);
205: return $IDEAKey;
206: }
207: }
208: #------------------------------------------------------------------------------
209: #
210: # SSLConnection
211: # Completes the formation of an ssh authenticated connection. The
212: # socket is promoted to an ssl socket. If this promotion and the associated
213: # certificate exchange are successful, the IDEA key is generated and sent
214: # to the remote peer via the SSL tunnel. The IDEA key is also returned to
215: # the caller after the SSL tunnel is torn down.
216: #
217: # Parameters:
218: # Name Type Purpose
219: # $Socket IO::Socket::INET Plaintext socket.
220: #
221: # Returns:
222: # IDEA key on success.
223: # undef on failure.
224: #
225: sub SSLConnection {
226: my $Socket = shift;
227:
228: Debug("SSLConnection: ");
229: my $KeyFile = lonssl::KeyFile();
230: if(!$KeyFile) {
231: my $err = lonssl::LastError();
232: &logthis("<font color=\"red\"> CRITICAL"
233: ."Can't get key file $err </font>");
234: return undef;
235: }
236: my ($CACertificate,
237: $Certificate) = lonssl::CertificateFile();
238:
239:
240: # If any of the key, certificate or certificate authority
241: # certificate filenames are not defined, this can't work.
242:
243: if((!$Certificate) || (!$CACertificate)) {
244: my $err = lonssl::LastError();
245: &logthis("<font color=\"red\"> CRITICAL"
246: ."Can't get certificates: $err </font>");
247:
248: return undef;
249: }
250: Debug("Key: $KeyFile CA: $CACertificate Cert: $Certificate");
251:
252: # Indicate to our peer that we can procede with
253: # a transition to ssl authentication:
254:
255: print $Socket "ok:ssl\n";
256:
257: Debug("Approving promotion -> ssl");
258: # And do so:
259:
260: my $SSLSocket = lonssl::PromoteServerSocket($Socket,
261: $CACertificate,
262: $Certificate,
263: $KeyFile);
264: if(! ($SSLSocket) ) { # SSL socket promotion failed.
265: my $err = lonssl::LastError();
266: &logthis("<font color=\"red\"> CRITICAL "
267: ."SSL Socket promotion failed: $err </font>");
268: return undef;
269: }
270: Debug("SSL Promotion successful");
271:
272: #
273: # The only thing we'll use the socket for is to send the IDEA key
274: # to the peer:
275:
276: my $Key = lonlocal::CreateCipherKey();
277: print $SSLSocket "$Key\n";
278:
279: lonssl::Close($SSLSocket);
280:
281: Debug("Key exchange complete: $Key");
282:
283: return $Key;
284: }
285: #
286: # InsecureConnection:
287: # If insecure connections are allowd,
288: # exchange a challenge with the client to 'validate' the
289: # client (not really, but that's the protocol):
290: # We produce a challenge string that's sent to the client.
291: # The client must then echo the challenge verbatim to us.
292: #
293: # Parameter:
294: # Socket - Socket open on the client.
295: # Returns:
296: # 1 - success.
297: # 0 - failure (e.g.mismatch or insecure not allowed).
298: #
299: sub InsecureConnection {
300: my $Socket = shift;
301:
302: # Don't even start if insecure connections are not allowed.
303:
304: if(! $perlvar{londAllowInsecure}) { # Insecure connections not allowed.
305: return 0;
306: }
307:
308: # Fabricate a challenge string and send it..
309:
310: my $challenge = "$$".time; # pid + time.
311: print $Socket "$challenge\n";
312: &status("Waiting for challenge reply");
313:
314: my $answer = <$Socket>;
315: $answer =~s/\W//g;
316: if($challenge eq $answer) {
317: return 1;
1.224 foxr 318: } else {
1.200 matthew 319: logthis("<font color='blue'>WARNING client did not respond to challenge</font>");
320: &status("No challenge reqply");
321: return 0;
322: }
323:
324:
325: }
1.251 foxr 326: #
327: # Safely execute a command (as long as it's not a shel command and doesn
328: # not require/rely on shell escapes. The function operates by doing a
329: # a pipe based fork and capturing stdout and stderr from the pipe.
330: #
331: # Formal Parameters:
332: # $line - A line of text to be executed as a command.
333: # Returns:
334: # The output from that command. If the output is multiline the caller
335: # must know how to split up the output.
336: #
337: #
338: sub execute_command {
339: my ($line) = @_;
340: my @words = split(/\s/, $line); # Bust the command up into words.
341: my $output = "";
342:
343: my $pid = open(CHILD, "-|");
344:
345: if($pid) { # Parent process
346: Debug("In parent process for execute_command");
347: my @data = <CHILD>; # Read the child's outupt...
348: close CHILD;
349: foreach my $output_line (@data) {
350: Debug("Adding $output_line");
351: $output .= $output_line; # Presumably has a \n on it.
352: }
353:
354: } else { # Child process
355: close (STDERR);
356: open (STDERR, ">&STDOUT");# Combine stderr, and stdout...
357: exec(@words); # won't return.
358: }
359: return $output;
360: }
361:
1.200 matthew 362:
1.140 foxr 363: # GetCertificate: Given a transaction that requires a certificate,
364: # this function will extract the certificate from the transaction
365: # request. Note that at this point, the only concept of a certificate
366: # is the hostname to which we are connected.
367: #
368: # Parameter:
369: # request - The request sent by our client (this parameterization may
370: # need to change when we really use a certificate granting
371: # authority.
372: #
373: sub GetCertificate {
374: my $request = shift;
375:
376: return $clientip;
377: }
1.161 foxr 378:
1.178 foxr 379: #
380: # Return true if client is a manager.
381: #
382: sub isManager {
383: return (($ConnectionType eq "manager") || ($ConnectionType eq "both"));
384: }
385: #
386: # Return tru if client can do client functions
387: #
388: sub isClient {
389: return (($ConnectionType eq "client") || ($ConnectionType eq "both"));
390: }
1.161 foxr 391:
392:
1.156 foxr 393: #
394: # ReadManagerTable: Reads in the current manager table. For now this is
395: # done on each manager authentication because:
396: # - These authentications are not frequent
397: # - This allows dynamic changes to the manager table
398: # without the need to signal to the lond.
399: #
400: sub ReadManagerTable {
401:
1.412 foxr 402: &Debug("Reading manager table");
1.156 foxr 403: # Clean out the old table first..
404:
1.166 foxr 405: foreach my $key (keys %managers) {
406: delete $managers{$key};
407: }
408:
409: my $tablename = $perlvar{'lonTabDir'}."/managers.tab";
410: if (!open (MANAGERS, $tablename)) {
1.473 raeburn 411: my $hostname = &Apache::lonnet::hostname($perlvar{'lonHostID'});
412: if (&Apache::lonnet::is_LC_dns($hostname)) {
1.472 raeburn 413: &logthis('<font color="red">No manager table. Nobody can manage!!</font>');
414: }
415: return;
1.166 foxr 416: }
417: while(my $host = <MANAGERS>) {
418: chomp($host);
419: if ($host =~ "^#") { # Comment line.
420: next;
421: }
1.368 albertel 422: if (!defined &Apache::lonnet::get_host_ip($host)) { # This is a non cluster member
1.161 foxr 423: # The entry is of the form:
424: # cluname:hostname
425: # cluname - A 'cluster hostname' is needed in order to negotiate
426: # the host key.
427: # hostname- The dns name of the host.
428: #
1.166 foxr 429: my($cluname, $dnsname) = split(/:/, $host);
430:
431: my $ip = gethostbyname($dnsname);
432: if(defined($ip)) { # bad names don't deserve entry.
433: my $hostip = inet_ntoa($ip);
434: $managers{$hostip} = $cluname;
435: logthis('<font color="green"> registering manager '.
436: "$dnsname as $cluname with $hostip </font>\n");
437: }
438: } else {
439: logthis('<font color="green"> existing host'." $host</font>\n");
1.472 raeburn 440: $managers{&Apache::lonnet::get_host_ip($host)} = $host; # Use info from cluster tab if cluster memeber
1.166 foxr 441: }
442: }
1.156 foxr 443: }
1.140 foxr 444:
445: #
446: # ValidManager: Determines if a given certificate represents a valid manager.
447: # in this primitive implementation, the 'certificate' is
448: # just the connecting loncapa client name. This is checked
449: # against a valid client list in the configuration.
450: #
451: #
452: sub ValidManager {
453: my $certificate = shift;
454:
1.163 foxr 455: return isManager;
1.140 foxr 456: }
457: #
1.143 foxr 458: # CopyFile: Called as part of the process of installing a
459: # new configuration file. This function copies an existing
460: # file to a backup file.
461: # Parameters:
462: # oldfile - Name of the file to backup.
463: # newfile - Name of the backup file.
464: # Return:
465: # 0 - Failure (errno has failure reason).
466: # 1 - Success.
467: #
468: sub CopyFile {
1.192 foxr 469:
470: my ($oldfile, $newfile) = @_;
1.143 foxr 471:
1.281 matthew 472: if (! copy($oldfile,$newfile)) {
473: return 0;
1.143 foxr 474: }
1.281 matthew 475: chmod(0660, $newfile);
476: return 1;
1.143 foxr 477: }
1.157 foxr 478: #
479: # Host files are passed out with externally visible host IPs.
480: # If, for example, we are behind a fire-wall or NAT host, our
481: # internally visible IP may be different than the externally
482: # visible IP. Therefore, we always adjust the contents of the
483: # host file so that the entry for ME is the IP that we believe
484: # we have. At present, this is defined as the entry that
485: # DNS has for us. If by some chance we are not able to get a
486: # DNS translation for us, then we assume that the host.tab file
487: # is correct.
488: # BUGBUGBUG - in the future, we really should see if we can
489: # easily query the interface(s) instead.
490: # Parameter(s):
491: # contents - The contents of the host.tab to check.
492: # Returns:
493: # newcontents - The adjusted contents.
494: #
495: #
496: sub AdjustHostContents {
497: my $contents = shift;
498: my $adjusted;
499: my $me = $perlvar{'lonHostID'};
500:
1.354 albertel 501: foreach my $line (split(/\n/,$contents)) {
1.472 raeburn 502: if(!(($line eq "") || ($line =~ /^ *\#/) || ($line =~ /^ *$/) ||
503: ($line =~ /^\s*\^/))) {
1.157 foxr 504: chomp($line);
505: my ($id,$domain,$role,$name,$ip,$maxcon,$idleto,$mincon)=split(/:/,$line);
506: if ($id eq $me) {
1.354 albertel 507: my $ip = gethostbyname($name);
508: my $ipnew = inet_ntoa($ip);
509: $ip = $ipnew;
1.157 foxr 510: # Reconstruct the host line and append to adjusted:
511:
1.354 albertel 512: my $newline = "$id:$domain:$role:$name:$ip";
513: if($maxcon ne "") { # Not all hosts have loncnew tuning params
514: $newline .= ":$maxcon:$idleto:$mincon";
515: }
516: $adjusted .= $newline."\n";
1.157 foxr 517:
1.354 albertel 518: } else { # Not me, pass unmodified.
519: $adjusted .= $line."\n";
520: }
1.157 foxr 521: } else { # Blank or comment never re-written.
522: $adjusted .= $line."\n"; # Pass blanks and comments as is.
523: }
1.354 albertel 524: }
525: return $adjusted;
1.157 foxr 526: }
1.143 foxr 527: #
528: # InstallFile: Called to install an administrative file:
1.412 foxr 529: # - The file is created int a temp directory called <name>.tmp
530: # - lcinstall file is called to install the file.
531: # since the web app has no direct write access to the table directory
1.143 foxr 532: #
533: # Parameters:
534: # Name of the file
535: # File Contents.
536: # Return:
537: # nonzero - success.
538: # 0 - failure and $! has an errno.
1.412 foxr 539: # Assumptions:
540: # File installtion is a relatively infrequent
1.143 foxr 541: #
542: sub InstallFile {
1.192 foxr 543:
544: my ($Filename, $Contents) = @_;
1.412 foxr 545: # my $TempFile = $Filename.".tmp";
546: my $exedir = $perlvar{'lonDaemons'};
547: my $tmpdir = $exedir.'/tmp/';
548: my $TempFile = $tmpdir."TempTableFile.tmp";
1.143 foxr 549:
550: # Open the file for write:
551:
552: my $fh = IO::File->new("> $TempFile"); # Write to temp.
553: if(!(defined $fh)) {
554: &logthis('<font color="red"> Unable to create '.$TempFile."</font>");
555: return 0;
556: }
557: # write the contents of the file:
558:
559: print $fh ($Contents);
560: $fh->close; # In case we ever have a filesystem w. locking
561:
1.412 foxr 562: chmod(0664, $TempFile); # Everyone can write it.
563:
564: # Use lcinstall file to put the file in the table directory...
565:
566: &Debug("Opening pipe to $exedir/lcinstallfile $TempFile $Filename");
567: my $pf = IO::File->new("| $exedir/lcinstallfile $TempFile $Filename > $exedir/logs/lcinstallfile.log");
568: close $pf;
569: my $err = $?;
570: &Debug("Status is $err");
571: if ($err != 0) {
572: my $msg = $err;
573: if ($err < @installerrors) {
574: $msg = $installerrors[$err];
575: }
576: &logthis("Install failed for table file $Filename : $msg");
577: return 0;
578: }
579:
580: # Remove the temp file:
1.143 foxr 581:
1.412 foxr 582: unlink($TempFile);
1.143 foxr 583:
584: return 1;
585: }
1.200 matthew 586:
587:
1.169 foxr 588: #
589: # ConfigFileFromSelector: converts a configuration file selector
1.411 foxr 590: # into a configuration file pathname.
1.472 raeburn 591: # Supports the following file selectors:
592: # hosts, domain, dns_hosts, dns_domain
1.411 foxr 593: #
1.169 foxr 594: #
595: # Parameters:
596: # selector - Configuration file selector.
597: # Returns:
598: # Full path to the file or undef if the selector is invalid.
599: #
600: sub ConfigFileFromSelector {
601: my $selector = shift;
602: my $tablefile;
603:
604: my $tabledir = $perlvar{'lonTabDir'}.'/';
1.472 raeburn 605: if (($selector eq "hosts") || ($selector eq "domain") ||
606: ($selector eq "dns_hosts") || ($selector eq "dns_domain")) {
1.411 foxr 607: $tablefile = $tabledir.$selector.'.tab';
1.169 foxr 608: }
609: return $tablefile;
610: }
1.143 foxr 611: #
1.141 foxr 612: # PushFile: Called to do an administrative push of a file.
613: # - Ensure the file being pushed is one we support.
614: # - Backup the old file to <filename.saved>
615: # - Separate the contents of the new file out from the
616: # rest of the request.
617: # - Write the new file.
618: # Parameter:
619: # Request - The entire user request. This consists of a : separated
620: # string pushfile:tablename:contents.
621: # NOTE: The contents may have :'s in it as well making things a bit
622: # more interesting... but not much.
623: # Returns:
624: # String to send to client ("ok" or "refused" if bad file).
625: #
626: sub PushFile {
1.489.2.15 raeburn 627: my $request = shift;
1.141 foxr 628: my ($command, $filename, $contents) = split(":", $request, 3);
1.412 foxr 629: &Debug("PushFile");
1.141 foxr 630:
631: # At this point in time, pushes for only the following tables are
632: # supported:
633: # hosts.tab ($filename eq host).
634: # domain.tab ($filename eq domain).
1.472 raeburn 635: # dns_hosts.tab ($filename eq dns_host).
636: # dns_domain.tab ($filename eq dns_domain).
1.141 foxr 637: # Construct the destination filename or reject the request.
638: #
639: # lonManage is supposed to ensure this, however this session could be
640: # part of some elaborate spoof that managed somehow to authenticate.
641: #
642:
1.169 foxr 643:
644: my $tablefile = ConfigFileFromSelector($filename);
645: if(! (defined $tablefile)) {
1.141 foxr 646: return "refused";
647: }
1.412 foxr 648:
1.157 foxr 649: # If the file being pushed is the host file, we adjust the entry for ourself so that the
650: # IP will be our current IP as looked up in dns. Note this is only 99% good as it's possible
651: # to conceive of conditions where we don't have a DNS entry locally. This is possible in a
652: # network sense but it doesn't make much sense in a LonCAPA sense so we ignore (for now)
653: # that possibilty.
654:
655: if($filename eq "host") {
656: $contents = AdjustHostContents($contents);
1.489.2.15 raeburn 657: } elsif ($filename eq 'dns_host' || $filename eq 'dns_domain') {
658: if ($contents eq '') {
659: &logthis('<font color="red"> Pushfile: unable to install '
660: .$tablefile." - no data received from push. </font>");
661: return 'error: push had no data';
662: }
663: if (&Apache::lonnet::get_host_ip($clientname)) {
664: my $clienthost = &Apache::lonnet::hostname($clientname);
665: if ($managers{$clientip} eq $clientname) {
666: my $clientprotocol = $Apache::lonnet::protocol{$clientname};
667: $clientprotocol = 'http' if ($clientprotocol ne 'https');
668: my $url = '/adm/'.$filename;
669: $url =~ s{_}{/};
670: my $ua=new LWP::UserAgent;
671: $ua->timeout(60);
672: my $request=new HTTP::Request('GET',"$clientprotocol://$clienthost$url");
673: my $response=$ua->request($request);
674: if ($response->is_error()) {
675: &logthis('<font color="red"> Pushfile: unable to install '
676: .$tablefile." - error attempting to pull data. </font>");
677: return 'error: pull failed';
678: } else {
679: my $result = $response->content;
680: chomp($result);
681: unless ($result eq $contents) {
682: &logthis('<font color="red"> Pushfile: unable to install '
683: .$tablefile." - pushed data and pulled data differ. </font>");
684: my $pushleng = length($contents);
685: my $pullleng = length($result);
686: if ($pushleng != $pullleng) {
687: return "error: $pushleng vs $pullleng bytes";
688: } else {
689: return "error: mismatch push and pull";
690: }
691: }
692: }
693: }
694: }
1.157 foxr 695: }
696:
1.141 foxr 697: # Install the new file:
698:
1.412 foxr 699: &logthis("Installing new $tablefile contents:\n$contents");
1.143 foxr 700: if(!InstallFile($tablefile, $contents)) {
701: &logthis('<font color="red"> Pushfile: unable to install '
1.145 foxr 702: .$tablefile." $! </font>");
1.143 foxr 703: return "error:$!";
1.224 foxr 704: } else {
1.143 foxr 705: &logthis('<font color="green"> Installed new '.$tablefile
1.473 raeburn 706: ." - transaction by: $clientname ($clientip)</font>");
1.472 raeburn 707: my $adminmail = $perlvar{'lonAdmEMail'};
708: my $admindom = &Apache::lonnet::host_domain($perlvar{'lonHostID'});
709: if ($admindom ne '') {
710: my %domconfig =
711: &Apache::lonnet::get_dom('configuration',['contacts'],$admindom);
712: if (ref($domconfig{'contacts'}) eq 'HASH') {
713: if ($domconfig{'contacts'}{'adminemail'} ne '') {
714: $adminmail = $domconfig{'contacts'}{'adminemail'};
715: }
716: }
717: }
718: if ($adminmail =~ /^[^\@]+\@[^\@]+$/) {
719: my $msg = new Mail::Send;
720: $msg->to($adminmail);
721: $msg->subject('LON-CAPA DNS update on '.$perlvar{'lonHostID'});
722: $msg->add('Content-type','text/plain; charset=UTF-8');
723: if (my $fh = $msg->open()) {
724: print $fh 'Update to '.$tablefile.' from Cluster Manager '.
1.473 raeburn 725: "$clientname ($clientip)\n";
1.472 raeburn 726: $fh->close;
727: }
728: }
1.143 foxr 729: }
730:
1.141 foxr 731: # Indicate success:
732:
733: return "ok";
734:
735: }
1.145 foxr 736:
737: #
738: # Called to re-init either lonc or lond.
739: #
740: # Parameters:
741: # request - The full request by the client. This is of the form
742: # reinit:<process>
743: # where <process> is allowed to be either of
744: # lonc or lond
745: #
746: # Returns:
747: # The string to be sent back to the client either:
748: # ok - Everything worked just fine.
749: # error:why - There was a failure and why describes the reason.
750: #
751: #
752: sub ReinitProcess {
753: my $request = shift;
754:
1.146 foxr 755:
756: # separate the request (reinit) from the process identifier and
757: # validate it producing the name of the .pid file for the process.
758: #
759: #
760: my ($junk, $process) = split(":", $request);
1.147 foxr 761: my $processpidfile = $perlvar{'lonDaemons'}.'/logs/';
1.146 foxr 762: if($process eq 'lonc') {
763: $processpidfile = $processpidfile."lonc.pid";
1.147 foxr 764: if (!open(PIDFILE, "< $processpidfile")) {
765: return "error:Open failed for $processpidfile";
766: }
767: my $loncpid = <PIDFILE>;
768: close(PIDFILE);
769: logthis('<font color="red"> Reinitializing lonc pid='.$loncpid
770: ."</font>");
771: kill("USR2", $loncpid);
1.146 foxr 772: } elsif ($process eq 'lond') {
1.147 foxr 773: logthis('<font color="red"> Reinitializing self (lond) </font>');
774: &UpdateHosts; # Lond is us!!
1.146 foxr 775: } else {
776: &logthis('<font color="yellow" Invalid reinit request for '.$process
777: ."</font>");
778: return "error:Invalid process identifier $process";
779: }
1.145 foxr 780: return 'ok';
781: }
1.168 foxr 782: # Validate a line in a configuration file edit script:
783: # Validation includes:
784: # - Ensuring the command is valid.
785: # - Ensuring the command has sufficient parameters
786: # Parameters:
787: # scriptline - A line to validate (\n has been stripped for what it's worth).
1.167 foxr 788: #
1.168 foxr 789: # Return:
790: # 0 - Invalid scriptline.
791: # 1 - Valid scriptline
792: # NOTE:
793: # Only the command syntax is checked, not the executability of the
794: # command.
795: #
796: sub isValidEditCommand {
797: my $scriptline = shift;
798:
799: # Line elements are pipe separated:
800:
801: my ($command, $key, $newline) = split(/\|/, $scriptline);
802: &logthis('<font color="green"> isValideditCommand checking: '.
803: "Command = '$command', Key = '$key', Newline = '$newline' </font>\n");
804:
805: if ($command eq "delete") {
806: #
807: # key with no newline.
808: #
809: if( ($key eq "") || ($newline ne "")) {
810: return 0; # Must have key but no newline.
811: } else {
812: return 1; # Valid syntax.
813: }
1.169 foxr 814: } elsif ($command eq "replace") {
1.168 foxr 815: #
816: # key and newline:
817: #
818: if (($key eq "") || ($newline eq "")) {
819: return 0;
820: } else {
821: return 1;
822: }
1.169 foxr 823: } elsif ($command eq "append") {
824: if (($key ne "") && ($newline eq "")) {
825: return 1;
826: } else {
827: return 0;
828: }
1.168 foxr 829: } else {
830: return 0; # Invalid command.
831: }
832: return 0; # Should not get here!!!
833: }
1.169 foxr 834: #
835: # ApplyEdit - Applies an edit command to a line in a configuration
836: # file. It is the caller's responsiblity to validate the
837: # edit line.
838: # Parameters:
839: # $directive - A single edit directive to apply.
840: # Edit directives are of the form:
841: # append|newline - Appends a new line to the file.
842: # replace|key|newline - Replaces the line with key value 'key'
843: # delete|key - Deletes the line with key value 'key'.
844: # $editor - A config file editor object that contains the
845: # file being edited.
846: #
847: sub ApplyEdit {
1.192 foxr 848:
849: my ($directive, $editor) = @_;
1.169 foxr 850:
851: # Break the directive down into its command and its parameters
852: # (at most two at this point. The meaning of the parameters, if in fact
853: # they exist depends on the command).
854:
855: my ($command, $p1, $p2) = split(/\|/, $directive);
856:
857: if($command eq "append") {
858: $editor->Append($p1); # p1 - key p2 null.
859: } elsif ($command eq "replace") {
860: $editor->ReplaceLine($p1, $p2); # p1 - key p2 = newline.
861: } elsif ($command eq "delete") {
862: $editor->DeleteLine($p1); # p1 - key p2 null.
863: } else { # Should not get here!!!
864: die "Invalid command given to ApplyEdit $command"
865: }
866: }
867: #
868: # AdjustOurHost:
869: # Adjusts a host file stored in a configuration file editor object
870: # for the true IP address of this host. This is necessary for hosts
871: # that live behind a firewall.
872: # Those hosts have a publicly distributed IP of the firewall, but
873: # internally must use their actual IP. We assume that a given
874: # host only has a single IP interface for now.
875: # Formal Parameters:
876: # editor - The configuration file editor to adjust. This
877: # editor is assumed to contain a hosts.tab file.
878: # Strategy:
879: # - Figure out our hostname.
880: # - Lookup the entry for this host.
881: # - Modify the line to contain our IP
882: # - Do a replace for this host.
883: sub AdjustOurHost {
884: my $editor = shift;
885:
886: # figure out who I am.
887:
888: my $myHostName = $perlvar{'lonHostID'}; # LonCAPA hostname.
889:
890: # Get my host file entry.
891:
892: my $ConfigLine = $editor->Find($myHostName);
893: if(! (defined $ConfigLine)) {
894: die "AdjustOurHost - no entry for me in hosts file $myHostName";
895: }
896: # figure out my IP:
897: # Use the config line to get my hostname.
898: # Use gethostbyname to translate that into an IP address.
899: #
1.338 albertel 900: my ($id,$domain,$role,$name,$maxcon,$idleto,$mincon) = split(/:/,$ConfigLine);
1.169 foxr 901: #
902: # Reassemble the config line from the elements in the list.
903: # Note that if the loncnew items were not present before, they will
904: # be now even if they would be empty
905: #
906: my $newConfigLine = $id;
1.338 albertel 907: foreach my $item ($domain, $role, $name, $maxcon, $idleto, $mincon) {
1.169 foxr 908: $newConfigLine .= ":".$item;
909: }
910: # Replace the line:
911:
912: $editor->ReplaceLine($id, $newConfigLine);
913:
914: }
915: #
916: # ReplaceConfigFile:
917: # Replaces a configuration file with the contents of a
918: # configuration file editor object.
919: # This is done by:
920: # - Copying the target file to <filename>.old
921: # - Writing the new file to <filename>.tmp
922: # - Moving <filename.tmp> -> <filename>
923: # This laborious process ensures that the system is never without
924: # a configuration file that's at least valid (even if the contents
925: # may be dated).
926: # Parameters:
927: # filename - Name of the file to modify... this is a full path.
928: # editor - Editor containing the file.
929: #
930: sub ReplaceConfigFile {
1.192 foxr 931:
932: my ($filename, $editor) = @_;
1.168 foxr 933:
1.169 foxr 934: CopyFile ($filename, $filename.".old");
935:
936: my $contents = $editor->Get(); # Get the contents of the file.
937:
938: InstallFile($filename, $contents);
939: }
1.168 foxr 940: #
941: #
942: # Called to edit a configuration table file
1.167 foxr 943: # Parameters:
944: # request - The entire command/request sent by lonc or lonManage
945: # Return:
946: # The reply to send to the client.
1.168 foxr 947: #
1.167 foxr 948: sub EditFile {
949: my $request = shift;
950:
951: # Split the command into it's pieces: edit:filetype:script
952:
1.339 albertel 953: my ($cmd, $filetype, $script) = split(/:/, $request,3); # : in script
1.167 foxr 954:
955: # Check the pre-coditions for success:
956:
1.339 albertel 957: if($cmd != "edit") { # Something is amiss afoot alack.
1.167 foxr 958: return "error:edit request detected, but request != 'edit'\n";
959: }
960: if( ($filetype ne "hosts") &&
961: ($filetype ne "domain")) {
962: return "error:edit requested with invalid file specifier: $filetype \n";
963: }
964:
965: # Split the edit script and check it's validity.
1.168 foxr 966:
967: my @scriptlines = split(/\n/, $script); # one line per element.
968: my $linecount = scalar(@scriptlines);
969: for(my $i = 0; $i < $linecount; $i++) {
970: chomp($scriptlines[$i]);
971: if(!isValidEditCommand($scriptlines[$i])) {
972: return "error:edit with bad script line: '$scriptlines[$i]' \n";
973: }
974: }
1.145 foxr 975:
1.167 foxr 976: # Execute the edit operation.
1.169 foxr 977: # - Create a config file editor for the appropriate file and
978: # - execute each command in the script:
979: #
980: my $configfile = ConfigFileFromSelector($filetype);
981: if (!(defined $configfile)) {
982: return "refused\n";
983: }
984: my $editor = ConfigFileEdit->new($configfile);
1.167 foxr 985:
1.169 foxr 986: for (my $i = 0; $i < $linecount; $i++) {
987: ApplyEdit($scriptlines[$i], $editor);
988: }
989: # If the file is the host file, ensure that our host is
990: # adjusted to have our ip:
991: #
992: if($filetype eq "host") {
993: AdjustOurHost($editor);
994: }
995: # Finally replace the current file with our file.
996: #
997: ReplaceConfigFile($configfile, $editor);
1.167 foxr 998:
999: return "ok\n";
1000: }
1.207 foxr 1001:
1.255 foxr 1002: # read_profile
1003: #
1004: # Returns a set of specific entries from a user's profile file.
1005: # this is a utility function that is used by both get_profile_entry and
1006: # get_profile_entry_encrypted.
1007: #
1008: # Parameters:
1009: # udom - Domain in which the user exists.
1010: # uname - User's account name (loncapa account)
1011: # namespace - The profile namespace to open.
1012: # what - A set of & separated queries.
1013: # Returns:
1014: # If all ok: - The string that needs to be shipped back to the user.
1015: # If failure - A string that starts with error: followed by the failure
1016: # reason.. note that this probabyl gets shipped back to the
1017: # user as well.
1018: #
1019: sub read_profile {
1020: my ($udom, $uname, $namespace, $what) = @_;
1021:
1022: my $hashref = &tie_user_hash($udom, $uname, $namespace,
1023: &GDBM_READER());
1024: if ($hashref) {
1025: my @queries=split(/\&/,$what);
1.440 raeburn 1026: if ($namespace eq 'roles') {
1027: @queries = map { &unescape($_); } @queries;
1028: }
1.255 foxr 1029: my $qresult='';
1030:
1031: for (my $i=0;$i<=$#queries;$i++) {
1032: $qresult.="$hashref->{$queries[$i]}&"; # Presumably failure gives empty string.
1033: }
1034: $qresult=~s/\&$//; # Remove trailing & from last lookup.
1.311 albertel 1035: if (&untie_user_hash($hashref)) {
1.255 foxr 1036: return $qresult;
1037: } else {
1038: return "error: ".($!+0)." untie (GDBM) Failed";
1039: }
1040: } else {
1041: if ($!+0 == 2) {
1042: return "error:No such file or GDBM reported bad block error";
1043: } else {
1044: return "error: ".($!+0)." tie (GDBM) Failed";
1045: }
1046: }
1047:
1048: }
1.214 foxr 1049: #--------------------- Request Handlers --------------------------------------------
1050: #
1.215 foxr 1051: # By convention each request handler registers itself prior to the sub
1052: # declaration:
1.214 foxr 1053: #
1054:
1.216 foxr 1055: #++
1056: #
1.214 foxr 1057: # Handles ping requests.
1058: # Parameters:
1059: # $cmd - the actual keyword that invoked us.
1060: # $tail - the tail of the request that invoked us.
1061: # $replyfd- File descriptor connected to the client
1062: # Implicit Inputs:
1063: # $currenthostid - Global variable that carries the name of the host we are
1064: # known as.
1065: # Returns:
1066: # 1 - Ok to continue processing.
1067: # 0 - Program should exit.
1068: # Side effects:
1069: # Reply information is sent to the client.
1070: sub ping_handler {
1071: my ($cmd, $tail, $client) = @_;
1072: Debug("$cmd $tail $client .. $currenthostid:");
1073:
1.387 albertel 1074: Reply( $client,\$currenthostid,"$cmd:$tail");
1.214 foxr 1075:
1076: return 1;
1077: }
1078: ®ister_handler("ping", \&ping_handler, 0, 1, 1); # Ping unencoded, client or manager.
1079:
1.216 foxr 1080: #++
1.215 foxr 1081: #
1082: # Handles pong requests. Pong replies with our current host id, and
1083: # the results of a ping sent to us via our lonc.
1084: #
1085: # Parameters:
1086: # $cmd - the actual keyword that invoked us.
1087: # $tail - the tail of the request that invoked us.
1088: # $replyfd- File descriptor connected to the client
1089: # Implicit Inputs:
1090: # $currenthostid - Global variable that carries the name of the host we are
1091: # connected to.
1092: # Returns:
1093: # 1 - Ok to continue processing.
1094: # 0 - Program should exit.
1095: # Side effects:
1096: # Reply information is sent to the client.
1097: sub pong_handler {
1098: my ($cmd, $tail, $replyfd) = @_;
1099:
1.365 albertel 1100: my $reply=&Apache::lonnet::reply("ping",$clientname);
1.215 foxr 1101: &Reply( $replyfd, "$currenthostid:$reply\n", "$cmd:$tail");
1102: return 1;
1103: }
1104: ®ister_handler("pong", \&pong_handler, 0, 1, 1); # Pong unencoded, client or manager
1105:
1.216 foxr 1106: #++
1107: # Called to establish an encrypted session key with the remote client.
1108: # Note that with secure lond, in most cases this function is never
1109: # invoked. Instead, the secure session key is established either
1110: # via a local file that's locked down tight and only lives for a short
1111: # time, or via an ssl tunnel...and is generated from a bunch-o-random
1112: # bits from /dev/urandom, rather than the predictable pattern used by
1113: # by this sub. This sub is only used in the old-style insecure
1114: # key negotiation.
1115: # Parameters:
1116: # $cmd - the actual keyword that invoked us.
1117: # $tail - the tail of the request that invoked us.
1118: # $replyfd- File descriptor connected to the client
1119: # Implicit Inputs:
1120: # $currenthostid - Global variable that carries the name of the host
1121: # known as.
1.448 raeburn 1122: # $clientname - Global variable that carries the name of the host we're connected to.
1.216 foxr 1123: # Returns:
1124: # 1 - Ok to continue processing.
1125: # 0 - Program should exit.
1126: # Implicit Outputs:
1127: # Reply information is sent to the client.
1128: # $cipher is set with a reference to a new IDEA encryption object.
1129: #
1130: sub establish_key_handler {
1131: my ($cmd, $tail, $replyfd) = @_;
1132:
1133: my $buildkey=time.$$.int(rand 100000);
1134: $buildkey=~tr/1-6/A-F/;
1135: $buildkey=int(rand 100000).$buildkey.int(rand 100000);
1136: my $key=$currenthostid.$clientname;
1137: $key=~tr/a-z/A-Z/;
1138: $key=~tr/G-P/0-9/;
1139: $key=~tr/Q-Z/0-9/;
1140: $key=$key.$buildkey.$key.$buildkey.$key.$buildkey;
1141: $key=substr($key,0,32);
1142: my $cipherkey=pack("H32",$key);
1143: $cipher=new IDEA $cipherkey;
1.387 albertel 1144: &Reply($replyfd, \$buildkey, "$cmd:$tail");
1.216 foxr 1145:
1146: return 1;
1147:
1148: }
1149: ®ister_handler("ekey", \&establish_key_handler, 0, 1,1);
1150:
1.217 foxr 1151: # Handler for the load command. Returns the current system load average
1152: # to the requestor.
1153: #
1154: # Parameters:
1155: # $cmd - the actual keyword that invoked us.
1156: # $tail - the tail of the request that invoked us.
1157: # $replyfd- File descriptor connected to the client
1158: # Implicit Inputs:
1159: # $currenthostid - Global variable that carries the name of the host
1160: # known as.
1.448 raeburn 1161: # $clientname - Global variable that carries the name of the host we're connected to.
1.217 foxr 1162: # Returns:
1163: # 1 - Ok to continue processing.
1164: # 0 - Program should exit.
1165: # Side effects:
1166: # Reply information is sent to the client.
1167: sub load_handler {
1168: my ($cmd, $tail, $replyfd) = @_;
1169:
1.463 foxr 1170:
1171:
1.217 foxr 1172: # Get the load average from /proc/loadavg and calculate it as a percentage of
1173: # the allowed load limit as set by the perl global variable lonLoadLim
1174:
1175: my $loadavg;
1176: my $loadfile=IO::File->new('/proc/loadavg');
1177:
1178: $loadavg=<$loadfile>;
1179: $loadavg =~ s/\s.*//g; # Extract the first field only.
1180:
1181: my $loadpercent=100*$loadavg/$perlvar{'lonLoadLim'};
1182:
1.387 albertel 1183: &Reply( $replyfd, \$loadpercent, "$cmd:$tail");
1.217 foxr 1184:
1185: return 1;
1186: }
1.263 albertel 1187: ®ister_handler("load", \&load_handler, 0, 1, 0);
1.217 foxr 1188:
1189: #
1190: # Process the userload request. This sub returns to the client the current
1191: # user load average. It can be invoked either by clients or managers.
1192: #
1193: # Parameters:
1194: # $cmd - the actual keyword that invoked us.
1195: # $tail - the tail of the request that invoked us.
1196: # $replyfd- File descriptor connected to the client
1197: # Implicit Inputs:
1198: # $currenthostid - Global variable that carries the name of the host
1199: # known as.
1.448 raeburn 1200: # $clientname - Global variable that carries the name of the host we're connected to.
1.217 foxr 1201: # Returns:
1202: # 1 - Ok to continue processing.
1203: # 0 - Program should exit
1204: # Implicit inputs:
1205: # whatever the userload() function requires.
1206: # Implicit outputs:
1207: # the reply is written to the client.
1208: #
1209: sub user_load_handler {
1210: my ($cmd, $tail, $replyfd) = @_;
1211:
1.365 albertel 1212: my $userloadpercent=&Apache::lonnet::userload();
1.387 albertel 1213: &Reply($replyfd, \$userloadpercent, "$cmd:$tail");
1.217 foxr 1214:
1215: return 1;
1216: }
1.263 albertel 1217: ®ister_handler("userload", \&user_load_handler, 0, 1, 0);
1.217 foxr 1218:
1.218 foxr 1219: # Process a request for the authorization type of a user:
1220: # (userauth).
1221: #
1222: # Parameters:
1223: # $cmd - the actual keyword that invoked us.
1224: # $tail - the tail of the request that invoked us.
1225: # $replyfd- File descriptor connected to the client
1226: # Returns:
1227: # 1 - Ok to continue processing.
1228: # 0 - Program should exit
1229: # Implicit outputs:
1230: # The user authorization type is written to the client.
1231: #
1232: sub user_authorization_type {
1233: my ($cmd, $tail, $replyfd) = @_;
1234:
1235: my $userinput = "$cmd:$tail";
1236:
1237: # Pull the domain and username out of the command tail.
1.222 foxr 1238: # and call get_auth_type to determine the authentication type.
1.218 foxr 1239:
1240: my ($udom,$uname)=split(/:/,$tail);
1.222 foxr 1241: my $result = &get_auth_type($udom, $uname);
1.218 foxr 1242: if($result eq "nouser") {
1243: &Failure( $replyfd, "unknown_user\n", $userinput);
1244: } else {
1245: #
1.222 foxr 1246: # We only want to pass the second field from get_auth_type
1.218 foxr 1247: # for ^krb.. otherwise we'll be handing out the encrypted
1248: # password for internals e.g.
1249: #
1250: my ($type,$otherinfo) = split(/:/,$result);
1251: if($type =~ /^krb/) {
1252: $type = $result;
1.269 raeburn 1253: } else {
1254: $type .= ':';
1255: }
1.387 albertel 1256: &Reply( $replyfd, \$type, $userinput);
1.218 foxr 1257: }
1258:
1259: return 1;
1260: }
1261: ®ister_handler("currentauth", \&user_authorization_type, 1, 1, 0);
1262:
1263: # Process a request by a manager to push a hosts or domain table
1264: # to us. We pick apart the command and pass it on to the subs
1265: # that already exist to do this.
1266: #
1267: # Parameters:
1268: # $cmd - the actual keyword that invoked us.
1269: # $tail - the tail of the request that invoked us.
1270: # $client - File descriptor connected to the client
1271: # Returns:
1272: # 1 - Ok to continue processing.
1273: # 0 - Program should exit
1274: # Implicit Output:
1275: # a reply is written to the client.
1276: sub push_file_handler {
1277: my ($cmd, $tail, $client) = @_;
1.412 foxr 1278: &Debug("In push file handler");
1.218 foxr 1279: my $userinput = "$cmd:$tail";
1280:
1281: # At this time we only know that the IP of our partner is a valid manager
1282: # the code below is a hook to do further authentication (e.g. to resolve
1283: # spoofing).
1284:
1285: my $cert = &GetCertificate($userinput);
1.412 foxr 1286: if(&ValidManager($cert)) {
1287: &Debug("Valid manager: $client");
1.218 foxr 1288:
1289: # Now presumably we have the bona fides of both the peer host and the
1290: # process making the request.
1291:
1292: my $reply = &PushFile($userinput);
1.387 albertel 1293: &Reply($client, \$reply, $userinput);
1.218 foxr 1294:
1295: } else {
1.412 foxr 1296: &logthis("push_file_handler $client is not valid");
1.218 foxr 1297: &Failure( $client, "refused\n", $userinput);
1298: }
1.219 foxr 1299: return 1;
1.218 foxr 1300: }
1301: ®ister_handler("pushfile", \&push_file_handler, 1, 0, 1);
1302:
1.399 raeburn 1303: # The du_handler routine should be considered obsolete and is retained
1304: # for communication with legacy servers. Please see the du2_handler.
1.243 banghart 1305: #
1.399 raeburn 1306: # du - list the disk usage of a directory recursively.
1.243 banghart 1307: #
1308: # note: stolen code from the ls file handler
1309: # under construction by Rick Banghart
1310: # .
1311: # Parameters:
1312: # $cmd - The command that dispatched us (du).
1313: # $ududir - The directory path to list... I'm not sure what this
1314: # is relative as things like ls:. return e.g.
1315: # no_such_dir.
1316: # $client - Socket open on the client.
1317: # Returns:
1318: # 1 - indicating that the daemon should not disconnect.
1319: # Side Effects:
1320: # The reply is written to $client.
1321: #
1322: sub du_handler {
1323: my ($cmd, $ududir, $client) = @_;
1.339 albertel 1324: ($ududir) = split(/:/,$ududir); # Make 'telnet' testing easier.
1.251 foxr 1325: my $userinput = "$cmd:$ududir";
1326:
1.245 albertel 1327: if ($ududir=~/\.\./ || $ududir!~m|^/home/httpd/|) {
1328: &Failure($client,"refused\n","$cmd:$ududir");
1329: return 1;
1330: }
1.249 foxr 1331: # Since $ududir could have some nasties in it,
1332: # we will require that ududir is a valid
1333: # directory. Just in case someone tries to
1334: # slip us a line like .;(cd /home/httpd rm -rf*)
1335: # etc.
1336: #
1337: if (-d $ududir) {
1.292 albertel 1338: my $total_size=0;
1339: my $code=sub {
1340: if ($_=~/\.\d+\./) { return;}
1341: if ($_=~/\.meta$/) { return;}
1.362 albertel 1342: if (-d $_) { return;}
1.292 albertel 1343: $total_size+=(stat($_))[7];
1344: };
1.295 raeburn 1345: chdir($ududir);
1.292 albertel 1346: find($code,$ududir);
1347: $total_size=int($total_size/1024);
1.387 albertel 1348: &Reply($client,\$total_size,"$cmd:$ududir");
1.249 foxr 1349: } else {
1.251 foxr 1350: &Failure($client, "bad_directory:$ududir\n","$cmd:$ududir");
1.249 foxr 1351: }
1.243 banghart 1352: return 1;
1353: }
1354: ®ister_handler("du", \&du_handler, 0, 1, 0);
1.218 foxr 1355:
1.399 raeburn 1356: # Please also see the du_handler, which is obsoleted by du2.
1357: # du2_handler differs from du_handler in that required path to directory
1358: # provided by &propath() is prepended in the handler instead of on the
1359: # client side.
1.239 foxr 1360: #
1.399 raeburn 1361: # du2 - list the disk usage of a directory recursively.
1362: #
1363: # Parameters:
1364: # $cmd - The command that dispatched us (du).
1365: # $tail - The tail of the request that invoked us.
1366: # $tail is a : separated list of the following:
1367: # - $ududir - directory path to list (before prepending)
1368: # - $getpropath = 1 if &propath() should prepend
1369: # - $uname - username to use for &propath or user dir
1370: # - $udom - domain to use for &propath or user dir
1371: # All are escaped.
1372: # $client - Socket open on the client.
1373: # Returns:
1374: # 1 - indicating that the daemon should not disconnect.
1375: # Side Effects:
1376: # The reply is written to $client.
1377: #
1378:
1379: sub du2_handler {
1380: my ($cmd, $tail, $client) = @_;
1381: my ($ududir,$getpropath,$uname,$udom) = map { &unescape($_) } (split(/:/, $tail));
1382: my $userinput = "$cmd:$tail";
1383: if (($ududir=~/\.\./) || (($ududir!~m|^/home/httpd/|) && (!$getpropath))) {
1384: &Failure($client,"refused\n","$cmd:$tail");
1385: return 1;
1386: }
1387: if ($getpropath) {
1388: if (($uname =~ /^$LONCAPA::match_name$/) && ($udom =~ /^$LONCAPA::match_domain$/)) {
1389: $ududir = &propath($udom,$uname).'/'.$ududir;
1390: } else {
1391: &Failure($client,"refused\n","$cmd:$tail");
1392: return 1;
1393: }
1394: }
1395: # Since $ududir could have some nasties in it,
1396: # we will require that ududir is a valid
1397: # directory. Just in case someone tries to
1398: # slip us a line like .;(cd /home/httpd rm -rf*)
1399: # etc.
1400: #
1401: if (-d $ududir) {
1402: my $total_size=0;
1403: my $code=sub {
1404: if ($_=~/\.\d+\./) { return;}
1405: if ($_=~/\.meta$/) { return;}
1406: if (-d $_) { return;}
1407: $total_size+=(stat($_))[7];
1408: };
1409: chdir($ududir);
1410: find($code,$ududir);
1411: $total_size=int($total_size/1024);
1412: &Reply($client,\$total_size,"$cmd:$ududir");
1413: } else {
1414: &Failure($client, "bad_directory:$ududir\n","$cmd:$tail");
1415: }
1416: return 1;
1417: }
1418: ®ister_handler("du2", \&du2_handler, 0, 1, 0);
1419:
1420: #
1421: # The ls_handler routine should be considered obsolete and is retained
1422: # for communication with legacy servers. Please see the ls3_handler.
1.280 matthew 1423: #
1.239 foxr 1424: # ls - list the contents of a directory. For each file in the
1425: # selected directory the filename followed by the full output of
1426: # the stat function is returned. The returned info for each
1427: # file are separated by ':'. The stat fields are separated by &'s.
1.489.2.23! raeburn 1428: #
! 1429: # If the requested path contains /../ or is:
! 1430: #
! 1431: # 1. for a directory, and the path does not begin with one of:
! 1432: # (a) /home/httpd/html/res/<domain>/
! 1433: # (b) /home/httpd/html/res/userfiles/
! 1434: # (c) /home/httpd/lonUsers/<domain>/<1>/<2>/<3>/<username>/userfiles
! 1435: # or is:
! 1436: #
! 1437: # 2. for a file, and the path (after prepending) does not begin with:
! 1438: # /home/httpd/lonUsers/<domain>/<1>/<2>/<3>/<username>/
! 1439: #
! 1440: # the response will be "refused".
! 1441: #
1.239 foxr 1442: # Parameters:
1443: # $cmd - The command that dispatched us (ls).
1444: # $ulsdir - The directory path to list... I'm not sure what this
1445: # is relative as things like ls:. return e.g.
1446: # no_such_dir.
1447: # $client - Socket open on the client.
1448: # Returns:
1449: # 1 - indicating that the daemon should not disconnect.
1450: # Side Effects:
1451: # The reply is written to $client.
1452: #
1453: sub ls_handler {
1.280 matthew 1454: # obsoleted by ls2_handler
1.239 foxr 1455: my ($cmd, $ulsdir, $client) = @_;
1456:
1457: my $userinput = "$cmd:$ulsdir";
1458:
1459: my $obs;
1460: my $rights;
1461: my $ulsout='';
1462: my $ulsfn;
1.489.2.23! raeburn 1463: if ($ulsdir =~m{/\.\./}) {
! 1464: &Failure($client,"refused\n",$userinput);
! 1465: return 1;
! 1466: }
1.239 foxr 1467: if (-e $ulsdir) {
1468: if(-d $ulsdir) {
1.489.2.23! raeburn 1469: unless (($ulsdir =~ m{/home/httpd/html/(res/$LONCAPA::match_domain|userfiles)/}) ||
! 1470: ($ulsdir =~ m{/home/httpd/lonUsers/$LONCAPA::match_domain(?:/[\w\-.@]){3}/$LONCAPA::match_username/userfiles/})) {
! 1471: &Failure($client,"refused\n",$userinput);
! 1472: return 1;
! 1473: }
1.239 foxr 1474: if (opendir(LSDIR,$ulsdir)) {
1475: while ($ulsfn=readdir(LSDIR)) {
1.291 albertel 1476: undef($obs);
1477: undef($rights);
1.239 foxr 1478: my @ulsstats=stat($ulsdir.'/'.$ulsfn);
1479: #We do some obsolete checking here
1480: if(-e $ulsdir.'/'.$ulsfn.".meta") {
1481: open(FILE, $ulsdir.'/'.$ulsfn.".meta");
1482: my @obsolete=<FILE>;
1483: foreach my $obsolete (@obsolete) {
1.301 www 1484: if($obsolete =~ m/(<obsolete>)(on|1)/) { $obs = 1; }
1.239 foxr 1485: if($obsolete =~ m|(<copyright>)(default)|) { $rights = 1; }
1486: }
1487: }
1488: $ulsout.=$ulsfn.'&'.join('&',@ulsstats);
1489: if($obs eq '1') { $ulsout.="&1"; }
1490: else { $ulsout.="&0"; }
1491: if($rights eq '1') { $ulsout.="&1:"; }
1492: else { $ulsout.="&0:"; }
1493: }
1494: closedir(LSDIR);
1495: }
1496: } else {
1.489.2.23! raeburn 1497: unless ($ulsdir =~ m{/home/httpd/lonUsers/$LONCAPA::match_domain(?:/[\w\-.@]){3}/$LONCAPA::match_username/}) {
! 1498: &Failure($client,"refused\n",$userinput);
! 1499: return 1;
! 1500: }
1.239 foxr 1501: my @ulsstats=stat($ulsdir);
1502: $ulsout.=$ulsfn.'&'.join('&',@ulsstats).':';
1503: }
1504: } else {
1505: $ulsout='no_such_dir';
1506: }
1507: if ($ulsout eq '') { $ulsout='empty'; }
1.387 albertel 1508: &Reply($client, \$ulsout, $userinput); # This supports debug logging.
1.239 foxr 1509:
1510: return 1;
1511:
1512: }
1513: ®ister_handler("ls", \&ls_handler, 0, 1, 0);
1514:
1.399 raeburn 1515: # The ls2_handler routine should be considered obsolete and is retained
1516: # for communication with legacy servers. Please see the ls3_handler.
1517: # Please also see the ls_handler, which was itself obsoleted by ls2.
1.280 matthew 1518: # ls2_handler differs from ls_handler in that it escapes its return
1519: # values before concatenating them together with ':'s.
1520: #
1521: # ls2 - list the contents of a directory. For each file in the
1522: # selected directory the filename followed by the full output of
1523: # the stat function is returned. The returned info for each
1524: # file are separated by ':'. The stat fields are separated by &'s.
1.489.2.23! raeburn 1525: #
! 1526: # If the requested path contains /../ or is:
! 1527: #
! 1528: # 1. for a directory, and the path does not begin with one of:
! 1529: # (a) /home/httpd/html/res/<domain>/
! 1530: # (b) /home/httpd/html/res/userfiles/
! 1531: # (c) /home/httpd/lonUsers/<domain>/<1>/<2>/<3>/<username>/userfiles
! 1532: # or is:
! 1533: #
! 1534: # 2. for a file, and the path (after prepending) does not begin with:
! 1535: # /home/httpd/lonUsers/<domain>/<1>/<2>/<3>/<username>/
! 1536: #
! 1537: # the response will be "refused".
! 1538: #
1.280 matthew 1539: # Parameters:
1540: # $cmd - The command that dispatched us (ls).
1541: # $ulsdir - The directory path to list... I'm not sure what this
1542: # is relative as things like ls:. return e.g.
1543: # no_such_dir.
1544: # $client - Socket open on the client.
1545: # Returns:
1546: # 1 - indicating that the daemon should not disconnect.
1547: # Side Effects:
1548: # The reply is written to $client.
1549: #
1550: sub ls2_handler {
1551: my ($cmd, $ulsdir, $client) = @_;
1552:
1553: my $userinput = "$cmd:$ulsdir";
1554:
1555: my $obs;
1556: my $rights;
1557: my $ulsout='';
1558: my $ulsfn;
1.489.2.23! raeburn 1559: if ($ulsdir =~m{/\.\./}) {
! 1560: &Failure($client,"refused\n",$userinput);
! 1561: return 1;
! 1562: }
1.280 matthew 1563: if (-e $ulsdir) {
1564: if(-d $ulsdir) {
1.489.2.23! raeburn 1565: unless (($ulsdir =~ m{/home/httpd/html/(res/$LONCAPA::match_domain|userfiles)/}) ||
! 1566: ($ulsdir =~ m{/home/httpd/lonUsers/$LONCAPA::match_domain(?:/[\w\-.@]){3}/$LONCAPA::match_username/userfiles/})) {
! 1567: &Failure($client,"refused\n","$userinput");
! 1568: return 1;
! 1569: }
1.280 matthew 1570: if (opendir(LSDIR,$ulsdir)) {
1571: while ($ulsfn=readdir(LSDIR)) {
1.291 albertel 1572: undef($obs);
1573: undef($rights);
1.280 matthew 1574: my @ulsstats=stat($ulsdir.'/'.$ulsfn);
1575: #We do some obsolete checking here
1576: if(-e $ulsdir.'/'.$ulsfn.".meta") {
1577: open(FILE, $ulsdir.'/'.$ulsfn.".meta");
1578: my @obsolete=<FILE>;
1579: foreach my $obsolete (@obsolete) {
1.301 www 1580: if($obsolete =~ m/(<obsolete>)(on|1)/) { $obs = 1; }
1.280 matthew 1581: if($obsolete =~ m|(<copyright>)(default)|) {
1582: $rights = 1;
1583: }
1584: }
1585: }
1586: my $tmp = $ulsfn.'&'.join('&',@ulsstats);
1587: if ($obs eq '1') { $tmp.="&1"; } else { $tmp.="&0"; }
1588: if ($rights eq '1') { $tmp.="&1"; } else { $tmp.="&0"; }
1589: $ulsout.= &escape($tmp).':';
1590: }
1591: closedir(LSDIR);
1592: }
1593: } else {
1.489.2.23! raeburn 1594: unless ($ulsdir =~ m{/home/httpd/lonUsers/$LONCAPA::match_domain(?:/[\w\-.@]){3}/$LONCAPA::match_username/}) {
! 1595: &Failure($client,"refused\n",$userinput);
! 1596: return 1;
! 1597: }
1.280 matthew 1598: my @ulsstats=stat($ulsdir);
1599: $ulsout.=$ulsfn.'&'.join('&',@ulsstats).':';
1600: }
1601: } else {
1602: $ulsout='no_such_dir';
1603: }
1604: if ($ulsout eq '') { $ulsout='empty'; }
1.387 albertel 1605: &Reply($client, \$ulsout, $userinput); # This supports debug logging.
1.280 matthew 1606: return 1;
1607: }
1608: ®ister_handler("ls2", \&ls2_handler, 0, 1, 0);
1.399 raeburn 1609: #
1610: # ls3 - list the contents of a directory. For each file in the
1611: # selected directory the filename followed by the full output of
1612: # the stat function is returned. The returned info for each
1613: # file are separated by ':'. The stat fields are separated by &'s.
1.489.2.23! raeburn 1614: #
! 1615: # If the requested path (after prepending) contains /../ or is:
! 1616: #
! 1617: # 1. for a directory, and the path does not begin with one of:
! 1618: # (a) /home/httpd/html/res/<domain>/
! 1619: # (b) /home/httpd/html/res/userfiles/
! 1620: # (c) /home/httpd/lonUsers/<domain>/<1>/<2>/<3>/<username>/userfiles
! 1621: # (d) /home/httpd/html/priv/<domain>/ and client is the homeserver
! 1622: #
! 1623: # or is:
! 1624: #
! 1625: # 2. for a file, and the path (after prepending) does not begin with:
! 1626: # /home/httpd/lonUsers/<domain>/<1>/<2>/<3>/<username>/
! 1627: #
! 1628: # the response will be "refused".
! 1629: #
1.399 raeburn 1630: # Parameters:
1631: # $cmd - The command that dispatched us (ls).
1632: # $tail - The tail of the request that invoked us.
1633: # $tail is a : separated list of the following:
1634: # - $ulsdir - directory path to list (before prepending)
1635: # - $getpropath = 1 if &propath() should prepend
1636: # - $getuserdir = 1 if path to user dir in lonUsers should
1637: # prepend
1638: # - $alternate_root - path to prepend
1639: # - $uname - username to use for &propath or user dir
1640: # - $udom - domain to use for &propath or user dir
1641: # All of these except $getpropath and &getuserdir are escaped.
1642: # no_such_dir.
1643: # $client - Socket open on the client.
1644: # Returns:
1645: # 1 - indicating that the daemon should not disconnect.
1646: # Side Effects:
1647: # The reply is written to $client.
1648: #
1649:
1650: sub ls3_handler {
1651: my ($cmd, $tail, $client) = @_;
1652: my $userinput = "$cmd:$tail";
1653: my ($ulsdir,$getpropath,$getuserdir,$alternate_root,$uname,$udom) =
1654: split(/:/,$tail);
1655: if (defined($ulsdir)) {
1656: $ulsdir = &unescape($ulsdir);
1657: }
1658: if (defined($alternate_root)) {
1659: $alternate_root = &unescape($alternate_root);
1660: }
1661: if (defined($uname)) {
1662: $uname = &unescape($uname);
1663: }
1664: if (defined($udom)) {
1665: $udom = &unescape($udom);
1666: }
1667:
1668: my $dir_root = $perlvar{'lonDocRoot'};
1.489.2.23! raeburn 1669: if (($getpropath) || ($getuserdir)) {
1.399 raeburn 1670: if (($uname =~ /^$LONCAPA::match_name$/) && ($udom =~ /^$LONCAPA::match_domain$/)) {
1671: $dir_root = &propath($udom,$uname);
1672: $dir_root =~ s/\/$//;
1673: } else {
1.489.2.23! raeburn 1674: &Failure($client,"refused\n",$userinput);
1.399 raeburn 1675: return 1;
1676: }
1.400 raeburn 1677: } elsif ($alternate_root ne '') {
1.399 raeburn 1678: $dir_root = $alternate_root;
1679: }
1.408 raeburn 1680: if (($dir_root ne '') && ($dir_root ne '/')) {
1.400 raeburn 1681: if ($ulsdir =~ /^\//) {
1682: $ulsdir = $dir_root.$ulsdir;
1683: } else {
1684: $ulsdir = $dir_root.'/'.$ulsdir;
1685: }
1.399 raeburn 1686: }
1.489.2.23! raeburn 1687: if ($ulsdir =~m{/\.\./}) {
! 1688: &Failure($client,"refused\n",$userinput);
! 1689: return 1;
! 1690: }
! 1691: my $islocal;
! 1692: my @machine_ids = &Apache::lonnet::current_machine_ids();
! 1693: if (grep(/^\Q$clientname\E$/,@machine_ids)) {
! 1694: $islocal = 1;
! 1695: }
1.399 raeburn 1696: my $obs;
1697: my $rights;
1698: my $ulsout='';
1699: my $ulsfn;
1700: if (-e $ulsdir) {
1701: if(-d $ulsdir) {
1.489.2.23! raeburn 1702: unless (($getpropath) || ($getuserdir) ||
! 1703: ($ulsdir =~ m{/home/httpd/html/(res/$LONCAPA::match_domain|userfiles)/}) ||
! 1704: ($ulsdir =~ m{/home/httpd/lonUsers/$LONCAPA::match_domain(?:/[\w\-.@]){3}/$LONCAPA::match_username/userfiles/}) ||
! 1705: (($ulsdir =~ m{/home/httpd/html/priv/$LONCAPA::match_domain/}) && ($islocal))) {
! 1706: &Failure($client,"refused\n",$userinput);
! 1707: return 1;
! 1708: }
1.399 raeburn 1709: if (opendir(LSDIR,$ulsdir)) {
1710: while ($ulsfn=readdir(LSDIR)) {
1711: undef($obs);
1712: undef($rights);
1713: my @ulsstats=stat($ulsdir.'/'.$ulsfn);
1714: #We do some obsolete checking here
1715: if(-e $ulsdir.'/'.$ulsfn.".meta") {
1716: open(FILE, $ulsdir.'/'.$ulsfn.".meta");
1717: my @obsolete=<FILE>;
1718: foreach my $obsolete (@obsolete) {
1719: if($obsolete =~ m/(<obsolete>)(on|1)/) { $obs = 1; }
1720: if($obsolete =~ m|(<copyright>)(default)|) {
1721: $rights = 1;
1722: }
1723: }
1724: }
1725: my $tmp = $ulsfn.'&'.join('&',@ulsstats);
1726: if ($obs eq '1') { $tmp.="&1"; } else { $tmp.="&0"; }
1727: if ($rights eq '1') { $tmp.="&1"; } else { $tmp.="&0"; }
1728: $ulsout.= &escape($tmp).':';
1729: }
1730: closedir(LSDIR);
1731: }
1732: } else {
1.489.2.23! raeburn 1733: unless (($getpropath) || ($getuserdir) ||
! 1734: ($ulsdir =~ m{/home/httpd/lonUsers/$LONCAPA::match_domain(?:/[\w\-.@]){3}/$LONCAPA::match_username/})) {
! 1735: &Failure($client,"refused\n",$userinput);
! 1736: return 1;
! 1737: }
1.399 raeburn 1738: my @ulsstats=stat($ulsdir);
1739: $ulsout.=$ulsfn.'&'.join('&',@ulsstats).':';
1740: }
1741: } else {
1742: $ulsout='no_such_dir';
1.400 raeburn 1743: }
1744: if ($ulsout eq '') { $ulsout='empty'; }
1745: &Reply($client, \$ulsout, $userinput); # This supports debug logging.
1746: return 1;
1.399 raeburn 1747: }
1748: ®ister_handler("ls3", \&ls3_handler, 0, 1, 0);
1.280 matthew 1749:
1.477 raeburn 1750: sub read_lonnet_global {
1751: my ($cmd,$tail,$client) = @_;
1752: my $userinput = "$cmd:$tail";
1753: my $requested = &Apache::lonnet::thaw_unescape($tail);
1754: my $result;
1.480 raeburn 1755: my %packagevars = (
1756: spareid => \%Apache::lonnet::spareid,
1757: perlvar => \%Apache::lonnet::perlvar,
1758: );
1759: my %limit_to = (
1760: perlvar => {
1761: lonOtherAuthen => 1,
1762: lonBalancer => 1,
1763: lonVersion => 1,
1764: lonSysEMail => 1,
1765: lonHostID => 1,
1766: lonRole => 1,
1767: lonDefDomain => 1,
1768: lonLoadLim => 1,
1769: lonUserLoadLim => 1,
1770: }
1771: );
1.477 raeburn 1772: if (ref($requested) eq 'HASH') {
1773: foreach my $what (keys(%{$requested})) {
1774: my $response;
1.480 raeburn 1775: my $items = {};
1776: if (exists($packagevars{$what})) {
1777: if (ref($limit_to{$what}) eq 'HASH') {
1778: foreach my $varname (keys(%{$packagevars{$what}})) {
1779: if ($limit_to{$what}{$varname}) {
1780: $items->{$varname} = $packagevars{$what}{$varname};
1781: }
1782: }
1783: } else {
1784: $items = $packagevars{$what};
1.477 raeburn 1785: }
1.480 raeburn 1786: if ($what eq 'perlvar') {
1787: if (!exists($packagevars{$what}{'lonBalancer'})) {
1788: if ($dist =~ /^(centos|rhes|fedora|scientific)/) {
1789: my $othervarref=LONCAPA::Configuration::read_conf('httpd.conf');
1790: if (ref($othervarref) eq 'HASH') {
1791: $items->{'lonBalancer'} = $othervarref->{'lonBalancer'};
1792: }
1793: }
1794: }
1.477 raeburn 1795: }
1.480 raeburn 1796: $response = &Apache::lonnet::freeze_escape($items);
1.477 raeburn 1797: }
1.478 raeburn 1798: $result .= &escape($what).'='.$response.'&';
1.477 raeburn 1799: }
1800: }
1801: $result =~ s/\&$//;
1802: &Reply($client,\$result,$userinput);
1803: return 1;
1804: }
1805: ®ister_handler("readlonnetglobal", \&read_lonnet_global, 0, 1, 0);
1806:
1.479 raeburn 1807: sub server_devalidatecache_handler {
1808: my ($cmd,$tail,$client) = @_;
1809: my $userinput = "$cmd:$tail";
1.489.2.9 raeburn 1810: my $items = &unescape($tail);
1811: my @cached = split(/\&/,$items);
1812: foreach my $key (@cached) {
1813: if ($key =~ /:/) {
1814: my ($name,$id) = map { &unescape($_); } split(/:/,$key);
1815: &Apache::lonnet::devalidate_cache_new($name,$id);
1816: }
1817: }
1.479 raeburn 1818: my $result = 'ok';
1819: &Reply($client,\$result,$userinput);
1820: return 1;
1821: }
1.481 raeburn 1822: ®ister_handler("devalidatecache", \&server_devalidatecache_handler, 0, 1, 0);
1.479 raeburn 1823:
1.410 raeburn 1824: sub server_timezone_handler {
1825: my ($cmd,$tail,$client) = @_;
1826: my $userinput = "$cmd:$tail";
1827: my $timezone;
1828: my $clockfile = '/etc/sysconfig/clock'; # Fedora/CentOS/SuSE
1829: my $tzfile = '/etc/timezone'; # Debian/Ubuntu
1830: if (-e $clockfile) {
1831: if (open(my $fh,"<$clockfile")) {
1832: while (<$fh>) {
1833: next if (/^[\#\s]/);
1834: if (/^(?:TIME)?ZONE\s*=\s*['"]?\s*([\w\/]+)/) {
1835: $timezone = $1;
1836: last;
1837: }
1838: }
1839: close($fh);
1840: }
1841: } elsif (-e $tzfile) {
1842: if (open(my $fh,"<$tzfile")) {
1843: $timezone = <$fh>;
1844: close($fh);
1845: chomp($timezone);
1846: if ($timezone =~ m{^Etc/(\w+)$}) {
1847: $timezone = $1;
1848: }
1849: }
1850: }
1851: &Reply($client,\$timezone,$userinput); # This supports debug logging.
1852: return 1;
1853: }
1854: ®ister_handler("servertimezone", \&server_timezone_handler, 0, 1, 0);
1855:
1.413 raeburn 1856: sub server_loncaparev_handler {
1857: my ($cmd,$tail,$client) = @_;
1858: my $userinput = "$cmd:$tail";
1859: &Reply($client,\$perlvar{'lonVersion'},$userinput);
1860: return 1;
1861: }
1862: ®ister_handler("serverloncaparev", \&server_loncaparev_handler, 0, 1, 0);
1863:
1.448 raeburn 1864: sub server_homeID_handler {
1865: my ($cmd,$tail,$client) = @_;
1866: my $userinput = "$cmd:$tail";
1867: &Reply($client,\$perlvar{'lonHostID'},$userinput);
1868: return 1;
1869: }
1870: ®ister_handler("serverhomeID", \&server_homeID_handler, 0, 1, 0);
1871:
1.471 raeburn 1872: sub server_distarch_handler {
1873: my ($cmd,$tail,$client) = @_;
1874: my $userinput = "$cmd:$tail";
1875: my $reply = &distro_and_arch();
1876: &Reply($client,\$reply,$userinput);
1877: return 1;
1878: }
1879: ®ister_handler("serverdistarch", \&server_distarch_handler, 0, 1, 0);
1880:
1.218 foxr 1881: # Process a reinit request. Reinit requests that either
1882: # lonc or lond be reinitialized so that an updated
1883: # host.tab or domain.tab can be processed.
1884: #
1885: # Parameters:
1886: # $cmd - the actual keyword that invoked us.
1887: # $tail - the tail of the request that invoked us.
1888: # $client - File descriptor connected to the client
1889: # Returns:
1890: # 1 - Ok to continue processing.
1891: # 0 - Program should exit
1892: # Implicit output:
1893: # a reply is sent to the client.
1894: #
1895: sub reinit_process_handler {
1896: my ($cmd, $tail, $client) = @_;
1897:
1898: my $userinput = "$cmd:$tail";
1899:
1900: my $cert = &GetCertificate($userinput);
1901: if(&ValidManager($cert)) {
1902: chomp($userinput);
1903: my $reply = &ReinitProcess($userinput);
1.387 albertel 1904: &Reply( $client, \$reply, $userinput);
1.218 foxr 1905: } else {
1906: &Failure( $client, "refused\n", $userinput);
1907: }
1908: return 1;
1909: }
1910: ®ister_handler("reinit", \&reinit_process_handler, 1, 0, 1);
1911:
1912: # Process the editing script for a table edit operation.
1913: # the editing operation must be encrypted and requested by
1914: # a manager host.
1915: #
1916: # Parameters:
1917: # $cmd - the actual keyword that invoked us.
1918: # $tail - the tail of the request that invoked us.
1919: # $client - File descriptor connected to the client
1920: # Returns:
1921: # 1 - Ok to continue processing.
1922: # 0 - Program should exit
1923: # Implicit output:
1924: # a reply is sent to the client.
1925: #
1926: sub edit_table_handler {
1927: my ($command, $tail, $client) = @_;
1928:
1929: my $userinput = "$command:$tail";
1930:
1931: my $cert = &GetCertificate($userinput);
1932: if(&ValidManager($cert)) {
1933: my($filetype, $script) = split(/:/, $tail);
1934: if (($filetype eq "hosts") ||
1935: ($filetype eq "domain")) {
1936: if($script ne "") {
1937: &Reply($client, # BUGBUG - EditFile
1938: &EditFile($userinput), # could fail.
1939: $userinput);
1940: } else {
1941: &Failure($client,"refused\n",$userinput);
1942: }
1943: } else {
1944: &Failure($client,"refused\n",$userinput);
1945: }
1946: } else {
1947: &Failure($client,"refused\n",$userinput);
1948: }
1949: return 1;
1950: }
1.263 albertel 1951: ®ister_handler("edit", \&edit_table_handler, 1, 0, 1);
1.218 foxr 1952:
1.220 foxr 1953: #
1954: # Authenticate a user against the LonCAPA authentication
1955: # database. Note that there are several authentication
1956: # possibilities:
1957: # - unix - The user can be authenticated against the unix
1958: # password file.
1959: # - internal - The user can be authenticated against a purely
1960: # internal per user password file.
1961: # - kerberos - The user can be authenticated against either a kerb4 or kerb5
1962: # ticket granting authority.
1963: # - user - The person tailoring LonCAPA can supply a user authentication
1964: # mechanism that is per system.
1965: #
1966: # Parameters:
1967: # $cmd - The command that got us here.
1968: # $tail - Tail of the command (remaining parameters).
1969: # $client - File descriptor connected to client.
1970: # Returns
1971: # 0 - Requested to exit, caller should shut down.
1972: # 1 - Continue processing.
1973: # Implicit inputs:
1974: # The authentication systems describe above have their own forms of implicit
1975: # input into the authentication process that are described above.
1976: #
1977: sub authenticate_handler {
1978: my ($cmd, $tail, $client) = @_;
1979:
1980:
1981: # Regenerate the full input line
1982:
1983: my $userinput = $cmd.":".$tail;
1984:
1985: # udom - User's domain.
1986: # uname - Username.
1987: # upass - User's password.
1.396 raeburn 1988: # checkdefauth - Pass to validate_user() to try authentication
1989: # with default auth type(s) if no user account.
1.447 raeburn 1990: # clientcancheckhost - Passed by clients with functionality in lonauth.pm
1991: # to check if session can be hosted.
1.220 foxr 1992:
1.447 raeburn 1993: my ($udom, $uname, $upass, $checkdefauth, $clientcancheckhost)=split(/:/,$tail);
1.399 raeburn 1994: &Debug(" Authenticate domain = $udom, user = $uname, password = $upass, checkdefauth = $checkdefauth");
1.220 foxr 1995: chomp($upass);
1996: $upass=&unescape($upass);
1997:
1.396 raeburn 1998: my $pwdcorrect = &validate_user($udom,$uname,$upass,$checkdefauth);
1.220 foxr 1999: if($pwdcorrect) {
1.447 raeburn 2000: my $canhost = 1;
2001: unless ($clientcancheckhost) {
1.448 raeburn 2002: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
2003: my $uint_dom = &Apache::lonnet::internet_dom($uprimary_id);
1.452 raeburn 2004: my @intdoms;
2005: my $internet_names = &Apache::lonnet::get_internet_names($clientname);
2006: if (ref($internet_names) eq 'ARRAY') {
2007: @intdoms = @{$internet_names};
2008: }
1.448 raeburn 2009: unless ($uint_dom ne '' && grep(/^\Q$uint_dom\E$/,@intdoms)) {
1.447 raeburn 2010: my ($remote,$hosted);
2011: my $remotesession = &get_usersession_config($udom,'remotesession');
2012: if (ref($remotesession) eq 'HASH') {
2013: $remote = $remotesession->{'remote'}
2014: }
1.448 raeburn 2015: my $hostedsession = &get_usersession_config($clienthomedom,'hostedsession');
1.447 raeburn 2016: if (ref($hostedsession) eq 'HASH') {
2017: $hosted = $hostedsession->{'hosted'};
2018: }
1.449 raeburn 2019: my $loncaparev = $clientversion;
2020: if ($loncaparev eq '') {
2021: $loncaparev = $Apache::lonnet::loncaparevs{$clientname};
2022: }
1.448 raeburn 2023: $canhost = &Apache::lonnet::can_host_session($udom,$clientname,
1.449 raeburn 2024: $loncaparev,
1.447 raeburn 2025: $remote,$hosted);
2026: }
2027: }
2028: if ($canhost) {
2029: &Reply( $client, "authorized\n", $userinput);
2030: } else {
2031: &Reply( $client, "not_allowed_to_host\n", $userinput);
2032: }
1.220 foxr 2033: #
2034: # Bad credentials: Failed to authorize
2035: #
2036: } else {
2037: &Failure( $client, "non_authorized\n", $userinput);
2038: }
2039:
2040: return 1;
2041: }
1.263 albertel 2042: ®ister_handler("auth", \&authenticate_handler, 1, 1, 0);
1.214 foxr 2043:
1.222 foxr 2044: #
2045: # Change a user's password. Note that this function is complicated by
2046: # the fact that a user may be authenticated in more than one way:
2047: # At present, we are not able to change the password for all types of
2048: # authentication methods. Only for:
2049: # unix - unix password or shadow passoword style authentication.
2050: # local - Locally written authentication mechanism.
2051: # For now, kerb4 and kerb5 password changes are not supported and result
2052: # in an error.
2053: # FUTURE WORK:
2054: # Support kerberos passwd changes?
2055: # Parameters:
2056: # $cmd - The command that got us here.
2057: # $tail - Tail of the command (remaining parameters).
2058: # $client - File descriptor connected to client.
2059: # Returns
2060: # 0 - Requested to exit, caller should shut down.
2061: # 1 - Continue processing.
2062: # Implicit inputs:
2063: # The authentication systems describe above have their own forms of implicit
2064: # input into the authentication process that are described above.
2065: sub change_password_handler {
2066: my ($cmd, $tail, $client) = @_;
2067:
2068: my $userinput = $cmd.":".$tail; # Reconstruct client's string.
2069:
2070: #
2071: # udom - user's domain.
2072: # uname - Username.
2073: # upass - Current password.
2074: # npass - New password.
1.346 raeburn 2075: # context - Context in which this was called
2076: # (preferences or reset_by_email).
1.428 raeburn 2077: # lonhost - HostID of server where request originated
1.222 foxr 2078:
1.428 raeburn 2079: my ($udom,$uname,$upass,$npass,$context,$lonhost)=split(/:/,$tail);
1.222 foxr 2080:
2081: $upass=&unescape($upass);
2082: $npass=&unescape($npass);
2083: &Debug("Trying to change password for $uname");
2084:
2085: # First require that the user can be authenticated with their
1.346 raeburn 2086: # old password unless context was 'reset_by_email':
2087:
1.428 raeburn 2088: my ($validated,$failure);
1.346 raeburn 2089: if ($context eq 'reset_by_email') {
1.428 raeburn 2090: if ($lonhost eq '') {
2091: $failure = 'invalid_client';
2092: } else {
2093: $validated = 1;
2094: }
1.346 raeburn 2095: } else {
2096: $validated = &validate_user($udom, $uname, $upass);
2097: }
1.222 foxr 2098: if($validated) {
2099: my $realpasswd = &get_auth_type($udom, $uname); # Defined since authd.
2100:
2101: my ($howpwd,$contentpwd)=split(/:/,$realpasswd);
2102: if ($howpwd eq 'internal') {
2103: &Debug("internal auth");
1.489.2.21 raeburn 2104: my $ncpass = &hash_passwd($udom,$npass);
1.222 foxr 2105: if(&rewrite_password_file($udom, $uname, "internal:$ncpass")) {
1.428 raeburn 2106: my $msg="Result of password change for $uname: pwchange_success";
2107: if ($lonhost) {
2108: $msg .= " - request originated from: $lonhost";
2109: }
2110: &logthis($msg);
1.489.2.21 raeburn 2111: &update_passwd_history($uname,$udom,$howpwd,$context);
1.222 foxr 2112: &Reply($client, "ok\n", $userinput);
2113: } else {
2114: &logthis("Unable to open $uname passwd "
2115: ."to change password");
2116: &Failure( $client, "non_authorized\n",$userinput);
2117: }
1.346 raeburn 2118: } elsif ($howpwd eq 'unix' && $context ne 'reset_by_email') {
1.287 foxr 2119: my $result = &change_unix_password($uname, $npass);
1.489.2.21 raeburn 2120: if ($result eq 'ok') {
2121: &update_passwd_history($uname,$udom,$howpwd,$context);
2122: }
1.222 foxr 2123: &logthis("Result of password change for $uname: ".
1.287 foxr 2124: $result);
1.387 albertel 2125: &Reply($client, \$result, $userinput);
1.222 foxr 2126: } else {
2127: # this just means that the current password mode is not
2128: # one we know how to change (e.g the kerberos auth modes or
2129: # locally written auth handler).
2130: #
2131: &Failure( $client, "auth_mode_error\n", $userinput);
2132: }
2133:
1.224 foxr 2134: } else {
1.428 raeburn 2135: if ($failure eq '') {
2136: $failure = 'non_authorized';
2137: }
2138: &Failure( $client, "$failure\n", $userinput);
1.222 foxr 2139: }
2140:
2141: return 1;
2142: }
1.263 albertel 2143: ®ister_handler("passwd", \&change_password_handler, 1, 1, 0);
1.222 foxr 2144:
1.489.2.21 raeburn 2145: sub hash_passwd {
2146: my ($domain,$plainpass,@rest) = @_;
2147: my ($salt,$cost);
2148: if (@rest) {
2149: $cost = $rest[0];
2150: # salt is first 22 characters, base-64 encoded by bcrypt
2151: my $plainsalt = substr($rest[1],0,22);
2152: $salt = Crypt::Eksblowfish::Bcrypt::de_base64($plainsalt);
2153: } else {
2154: my $defaultcost;
2155: my %domconfig =
2156: &Apache::lonnet::get_dom('configuration',['password'],$domain);
2157: if (ref($domconfig{'password'}) eq 'HASH') {
2158: $defaultcost = $domconfig{'password'}{'cost'};
2159: }
2160: if (($defaultcost eq '') || ($defaultcost =~ /D/)) {
2161: $cost = 10;
2162: } else {
2163: $cost = $defaultcost;
2164: }
2165: # Generate random 16-octet base64 salt
2166: $salt = "";
2167: $salt .= pack("C", int rand(256)) for 1..16;
2168: }
2169: my $hash = &Crypt::Eksblowfish::Bcrypt::bcrypt_hash({
2170: key_nul => 1,
2171: cost => $cost,
2172: salt => $salt,
2173: }, Digest::SHA::sha512(Encode::encode('UTF-8',$plainpass)));
2174:
2175: my $result = join("!", "", "bcrypt", sprintf("%02d",$cost),
2176: &Crypt::Eksblowfish::Bcrypt::en_base64($salt).
2177: &Crypt::Eksblowfish::Bcrypt::en_base64($hash));
2178: return $result;
2179: }
2180:
1.225 foxr 2181: #
2182: # Create a new user. User in this case means a lon-capa user.
2183: # The user must either already exist in some authentication realm
2184: # like kerberos or the /etc/passwd. If not, a user completely local to
2185: # this loncapa system is created.
2186: #
2187: # Parameters:
2188: # $cmd - The command that got us here.
2189: # $tail - Tail of the command (remaining parameters).
2190: # $client - File descriptor connected to client.
2191: # Returns
2192: # 0 - Requested to exit, caller should shut down.
2193: # 1 - Continue processing.
2194: # Implicit inputs:
2195: # The authentication systems describe above have their own forms of implicit
2196: # input into the authentication process that are described above.
2197: sub add_user_handler {
2198:
2199: my ($cmd, $tail, $client) = @_;
2200:
2201:
2202: my ($udom,$uname,$umode,$npass)=split(/:/,$tail);
2203: my $userinput = $cmd.":".$tail; # Reconstruct the full request line.
2204:
2205: &Debug("cmd =".$cmd." $udom =".$udom." uname=".$uname);
2206:
2207:
2208: if($udom eq $currentdomainid) { # Reject new users for other domains...
2209:
2210: my $oldumask=umask(0077);
2211: chomp($npass);
2212: $npass=&unescape($npass);
2213: my $passfilename = &password_path($udom, $uname);
2214: &Debug("Password file created will be:".$passfilename);
2215: if (-e $passfilename) {
2216: &Failure( $client, "already_exists\n", $userinput);
2217: } else {
2218: my $fperror='';
1.264 albertel 2219: if (!&mkpath($passfilename)) {
2220: $fperror="error: ".($!+0)." mkdir failed while attempting "
2221: ."makeuser";
1.225 foxr 2222: }
2223: unless ($fperror) {
1.489.2.21 raeburn 2224: my $result=&make_passwd_file($uname,$udom,$umode,$npass,
2225: $passfilename,'makeuser');
1.390 raeburn 2226: &Reply($client,\$result, $userinput); #BUGBUG - could be fail
1.225 foxr 2227: } else {
1.387 albertel 2228: &Failure($client, \$fperror, $userinput);
1.225 foxr 2229: }
2230: }
2231: umask($oldumask);
2232: } else {
2233: &Failure($client, "not_right_domain\n",
2234: $userinput); # Even if we are multihomed.
2235:
2236: }
2237: return 1;
2238:
2239: }
2240: ®ister_handler("makeuser", \&add_user_handler, 1, 1, 0);
2241:
2242: #
2243: # Change the authentication method of a user. Note that this may
2244: # also implicitly change the user's password if, for example, the user is
2245: # joining an existing authentication realm. Known authentication realms at
2246: # this time are:
2247: # internal - Purely internal password file (only loncapa knows this user)
2248: # local - Institutionally written authentication module.
2249: # unix - Unix user (/etc/passwd with or without /etc/shadow).
2250: # kerb4 - kerberos version 4
2251: # kerb5 - kerberos version 5
2252: #
2253: # Parameters:
2254: # $cmd - The command that got us here.
2255: # $tail - Tail of the command (remaining parameters).
2256: # $client - File descriptor connected to client.
2257: # Returns
2258: # 0 - Requested to exit, caller should shut down.
2259: # 1 - Continue processing.
2260: # Implicit inputs:
2261: # The authentication systems describe above have their own forms of implicit
2262: # input into the authentication process that are described above.
1.287 foxr 2263: # NOTE:
2264: # This is also used to change the authentication credential values (e.g. passwd).
2265: #
1.225 foxr 2266: #
2267: sub change_authentication_handler {
2268:
2269: my ($cmd, $tail, $client) = @_;
2270:
2271: my $userinput = "$cmd:$tail"; # Reconstruct user input.
2272:
2273: my ($udom,$uname,$umode,$npass)=split(/:/,$tail);
2274: &Debug("cmd = ".$cmd." domain= ".$udom."uname =".$uname." umode= ".$umode);
2275: if ($udom ne $currentdomainid) {
2276: &Failure( $client, "not_right_domain\n", $client);
2277: } else {
2278:
2279: chomp($npass);
2280:
2281: $npass=&unescape($npass);
1.261 foxr 2282: my $oldauth = &get_auth_type($udom, $uname); # Get old auth info.
1.225 foxr 2283: my $passfilename = &password_path($udom, $uname);
2284: if ($passfilename) { # Not allowed to create a new user!!
1.287 foxr 2285: # If just changing the unix passwd. need to arrange to run
1.489.2.8 raeburn 2286: # passwd since otherwise make_passwd_file will fail as
2287: # creation of unix authenticated users is no longer supported
2288: # except from the command line, when running make_domain_coordinator.pl
1.287 foxr 2289:
2290: if(($oldauth =~/^unix/) && ($umode eq "unix")) {
2291: my $result = &change_unix_password($uname, $npass);
2292: &logthis("Result of password change for $uname: ".$result);
2293: if ($result eq "ok") {
1.489.2.21 raeburn 2294: &update_passwd_history($uname,$udom,$umode,'changeuserauth');
1.390 raeburn 2295: &Reply($client, \$result);
1.288 albertel 2296: } else {
1.387 albertel 2297: &Failure($client, \$result);
1.287 foxr 2298: }
1.288 albertel 2299: } else {
1.489.2.21 raeburn 2300: my $result=&make_passwd_file($uname,$udom,$umode,$npass,
2301: $passfilename,'changeuserauth');
1.287 foxr 2302: #
2303: # If the current auth mode is internal, and the old auth mode was
2304: # unix, or krb*, and the user is an author for this domain,
2305: # re-run manage_permissions for that role in order to be able
2306: # to take ownership of the construction space back to www:www
2307: #
1.489.2.8 raeburn 2308:
2309:
1.387 albertel 2310: &Reply($client, \$result, $userinput);
1.261 foxr 2311: }
2312:
2313:
1.225 foxr 2314: } else {
1.251 foxr 2315: &Failure($client, "non_authorized\n", $userinput); # Fail the user now.
1.225 foxr 2316: }
2317: }
2318: return 1;
2319: }
2320: ®ister_handler("changeuserauth", \&change_authentication_handler, 1,1, 0);
2321:
1.489.2.21 raeburn 2322: sub update_passwd_history {
2323: my ($uname,$udom,$umode,$context) = @_;
2324: my $proname=&propath($udom,$uname);
2325: my $now = time;
2326: if (open(my $fh,">>$proname/passwd.log")) {
2327: print $fh "$now:$umode:$context\n";
2328: close($fh);
2329: }
2330: return;
2331: }
2332:
1.225 foxr 2333: #
2334: # Determines if this is the home server for a user. The home server
2335: # for a user will have his/her lon-capa passwd file. Therefore all we need
2336: # to do is determine if this file exists.
2337: #
2338: # Parameters:
2339: # $cmd - The command that got us here.
2340: # $tail - Tail of the command (remaining parameters).
2341: # $client - File descriptor connected to client.
2342: # Returns
2343: # 0 - Requested to exit, caller should shut down.
2344: # 1 - Continue processing.
2345: # Implicit inputs:
2346: # The authentication systems describe above have their own forms of implicit
2347: # input into the authentication process that are described above.
2348: #
2349: sub is_home_handler {
2350: my ($cmd, $tail, $client) = @_;
2351:
2352: my $userinput = "$cmd:$tail";
2353:
2354: my ($udom,$uname)=split(/:/,$tail);
2355: chomp($uname);
2356: my $passfile = &password_filename($udom, $uname);
2357: if($passfile) {
2358: &Reply( $client, "found\n", $userinput);
2359: } else {
2360: &Failure($client, "not_found\n", $userinput);
2361: }
2362: return 1;
2363: }
2364: ®ister_handler("home", \&is_home_handler, 0,1,0);
2365:
2366: #
1.434 www 2367: # Process an update request for a resource.
2368: # A resource has been modified that we hold a subscription to.
1.225 foxr 2369: # If the resource is not local, then we must update, or at least invalidate our
2370: # cached copy of the resource.
2371: # Parameters:
2372: # $cmd - The command that got us here.
2373: # $tail - Tail of the command (remaining parameters).
2374: # $client - File descriptor connected to client.
2375: # Returns
2376: # 0 - Requested to exit, caller should shut down.
2377: # 1 - Continue processing.
2378: # Implicit inputs:
2379: # The authentication systems describe above have their own forms of implicit
2380: # input into the authentication process that are described above.
2381: #
2382: sub update_resource_handler {
2383:
2384: my ($cmd, $tail, $client) = @_;
2385:
2386: my $userinput = "$cmd:$tail";
2387:
2388: my $fname= $tail; # This allows interactive testing
2389:
2390:
2391: my $ownership=ishome($fname);
2392: if ($ownership eq 'not_owner') {
2393: if (-e $fname) {
1.434 www 2394: # Delete preview file, if exists
2395: unlink("$fname.tmp");
2396: # Get usage stats
1.225 foxr 2397: my ($dev,$ino,$mode,$nlink,$uid,$gid,$rdev,$size,
2398: $atime,$mtime,$ctime,$blksize,$blocks)=stat($fname);
2399: my $now=time;
2400: my $since=$now-$atime;
1.434 www 2401: # If the file has not been used within lonExpire seconds,
2402: # unsubscribe from it and delete local copy
1.225 foxr 2403: if ($since>$perlvar{'lonExpire'}) {
1.365 albertel 2404: my $reply=&Apache::lonnet::reply("unsub:$fname","$clientname");
1.308 albertel 2405: &devalidate_meta_cache($fname);
1.225 foxr 2406: unlink("$fname");
1.334 albertel 2407: unlink("$fname.meta");
1.225 foxr 2408: } else {
1.434 www 2409: # Yes, this is in active use. Get a fresh copy. Since it might be in
2410: # very active use and huge (like a movie), copy it to "in.transfer" filename first.
1.225 foxr 2411: my $transname="$fname.in.transfer";
1.365 albertel 2412: my $remoteurl=&Apache::lonnet::reply("sub:$fname","$clientname");
1.225 foxr 2413: my $response;
1.455 www 2414: # FIXME: cannot replicate files that take more than two minutes to transfer?
2415: # alarm(120);
2416: # FIXME: this should use the LWP mechanism, not internal alarms.
2417: alarm(1200);
1.225 foxr 2418: {
2419: my $ua=new LWP::UserAgent;
2420: my $request=new HTTP::Request('GET',"$remoteurl");
2421: $response=$ua->request($request,$transname);
2422: }
2423: alarm(0);
2424: if ($response->is_error()) {
1.455 www 2425: # FIXME: we should probably clean up here instead of just whine
1.225 foxr 2426: unlink($transname);
2427: my $message=$response->status_line;
2428: &logthis("LWP GET: $message for $fname ($remoteurl)");
2429: } else {
2430: if ($remoteurl!~/\.meta$/) {
1.455 www 2431: # FIXME: isn't there an internal LWP mechanism for this?
1.225 foxr 2432: alarm(120);
2433: {
2434: my $ua=new LWP::UserAgent;
2435: my $mrequest=new HTTP::Request('GET',$remoteurl.'.meta');
2436: my $mresponse=$ua->request($mrequest,$fname.'.meta');
2437: if ($mresponse->is_error()) {
2438: unlink($fname.'.meta');
2439: }
2440: }
2441: alarm(0);
2442: }
1.434 www 2443: # we successfully transfered, copy file over to real name
1.225 foxr 2444: rename($transname,$fname);
1.308 albertel 2445: &devalidate_meta_cache($fname);
1.225 foxr 2446: }
2447: }
2448: &Reply( $client, "ok\n", $userinput);
2449: } else {
2450: &Failure($client, "not_found\n", $userinput);
2451: }
2452: } else {
2453: &Failure($client, "rejected\n", $userinput);
2454: }
2455: return 1;
2456: }
2457: ®ister_handler("update", \&update_resource_handler, 0 ,1, 0);
2458:
1.308 albertel 2459: sub devalidate_meta_cache {
2460: my ($url) = @_;
2461: use Cache::Memcached;
2462: my $memcache = new Cache::Memcached({'servers'=>['127.0.0.1:11211']});
1.365 albertel 2463: $url = &Apache::lonnet::declutter($url);
1.308 albertel 2464: $url =~ s-\.meta$--;
2465: my $id = &escape('meta:'.$url);
2466: $memcache->delete($id);
2467: }
2468:
1.225 foxr 2469: #
1.226 foxr 2470: # Fetch a user file from a remote server to the user's home directory
2471: # userfiles subdir.
1.225 foxr 2472: # Parameters:
2473: # $cmd - The command that got us here.
2474: # $tail - Tail of the command (remaining parameters).
2475: # $client - File descriptor connected to client.
2476: # Returns
2477: # 0 - Requested to exit, caller should shut down.
2478: # 1 - Continue processing.
2479: #
2480: sub fetch_user_file_handler {
2481:
2482: my ($cmd, $tail, $client) = @_;
2483:
2484: my $userinput = "$cmd:$tail";
2485: my $fname = $tail;
1.232 foxr 2486: my ($udom,$uname,$ufile) = ($fname =~ m|^([^/]+)/([^/]+)/(.+)$|);
1.225 foxr 2487: my $udir=&propath($udom,$uname).'/userfiles';
2488: unless (-e $udir) {
2489: mkdir($udir,0770);
2490: }
1.232 foxr 2491: Debug("fetch user file for $fname");
1.225 foxr 2492: if (-e $udir) {
2493: $ufile=~s/^[\.\~]+//;
1.232 foxr 2494:
2495: # IF necessary, create the path right down to the file.
2496: # Note that any regular files in the way of this path are
2497: # wiped out to deal with some earlier folly of mine.
2498:
1.267 raeburn 2499: if (!&mkpath($udir.'/'.$ufile)) {
1.264 albertel 2500: &Failure($client, "unable_to_create\n", $userinput);
1.232 foxr 2501: }
2502:
1.225 foxr 2503: my $destname=$udir.'/'.$ufile;
2504: my $transname=$udir.'/'.$ufile.'.in.transit';
1.476 raeburn 2505: my $clientprotocol=$Apache::lonnet::protocol{$clientname};
2506: $clientprotocol = 'http' if ($clientprotocol ne 'https');
1.486 raeburn 2507: my $clienthost = &Apache::lonnet::hostname($clientname);
2508: my $remoteurl=$clientprotocol.'://'.$clienthost.'/userfiles/'.$fname;
1.225 foxr 2509: my $response;
1.232 foxr 2510: Debug("Remote URL : $remoteurl Transfername $transname Destname: $destname");
1.225 foxr 2511: alarm(120);
2512: {
2513: my $ua=new LWP::UserAgent;
2514: my $request=new HTTP::Request('GET',"$remoteurl");
2515: $response=$ua->request($request,$transname);
2516: }
2517: alarm(0);
2518: if ($response->is_error()) {
2519: unlink($transname);
2520: my $message=$response->status_line;
2521: &logthis("LWP GET: $message for $fname ($remoteurl)");
2522: &Failure($client, "failed\n", $userinput);
2523: } else {
1.232 foxr 2524: Debug("Renaming $transname to $destname");
1.225 foxr 2525: if (!rename($transname,$destname)) {
2526: &logthis("Unable to move $transname to $destname");
2527: unlink($transname);
2528: &Failure($client, "failed\n", $userinput);
2529: } else {
1.489.2.2 raeburn 2530: if ($fname =~ /^default.+\.(page|sequence)$/) {
2531: my ($major,$minor) = split(/\./,$clientversion);
2532: if (($major < 2) || ($major == 2 && $minor < 11)) {
2533: my $now = time;
2534: &Apache::lonnet::do_cache_new('crschange',$udom.'_'.$uname,$now,600);
2535: my $key = &escape('internal.contentchange');
2536: my $what = "$key=$now";
2537: my $hashref = &tie_user_hash($udom,$uname,'environment',
2538: &GDBM_WRCREAT(),"P",$what);
2539: if ($hashref) {
2540: $hashref->{$key}=$now;
2541: if (!&untie_user_hash($hashref)) {
2542: &logthis("error: ".($!+0)." untie (GDBM) failed ".
2543: "when updating internal.contentchange");
2544: }
2545: }
2546: }
2547: }
1.225 foxr 2548: &Reply($client, "ok\n", $userinput);
2549: }
2550: }
2551: } else {
2552: &Failure($client, "not_home\n", $userinput);
2553: }
2554: return 1;
2555: }
2556: ®ister_handler("fetchuserfile", \&fetch_user_file_handler, 0, 1, 0);
2557:
1.226 foxr 2558: #
2559: # Remove a file from a user's home directory userfiles subdirectory.
2560: # Parameters:
2561: # cmd - the Lond request keyword that got us here.
2562: # tail - the part of the command past the keyword.
2563: # client- File descriptor connected with the client.
2564: #
2565: # Returns:
2566: # 1 - Continue processing.
2567: sub remove_user_file_handler {
2568: my ($cmd, $tail, $client) = @_;
2569:
2570: my ($fname) = split(/:/, $tail); # Get rid of any tailing :'s lonc may have sent.
2571:
2572: my ($udom,$uname,$ufile) = ($fname =~ m|^([^/]+)/([^/]+)/(.+)$|);
2573: if ($ufile =~m|/\.\./|) {
2574: # any files paths with /../ in them refuse
2575: # to deal with
2576: &Failure($client, "refused\n", "$cmd:$tail");
2577: } else {
2578: my $udir = &propath($udom,$uname);
2579: if (-e $udir) {
2580: my $file=$udir.'/userfiles/'.$ufile;
2581: if (-e $file) {
1.253 foxr 2582: #
2583: # If the file is a regular file unlink is fine...
1.489.2.19 raeburn 2584: # However it's possible the client wants a dir
2585: # removed, in which case rmdir is more appropriate
2586: # Note: rmdir will only remove an empty directory.
1.253 foxr 2587: #
1.240 banghart 2588: if (-f $file){
1.241 albertel 2589: unlink($file);
1.489.2.19 raeburn 2590: # for html files remove the associated .bak file
2591: # which may have been created by the editor.
2592: if ($ufile =~ m{^((docs|supplemental)/(?:\d+|default)/\d+(?:|/.+)/)[^/]+\.x?html?$}i) {
2593: my $path = $1;
2594: if (-e $file.'.bak') {
2595: unlink($file.'.bak');
2596: }
2597: }
1.241 albertel 2598: } elsif(-d $file) {
2599: rmdir($file);
1.240 banghart 2600: }
1.226 foxr 2601: if (-e $file) {
1.253 foxr 2602: # File is still there after we deleted it ?!?
2603:
1.226 foxr 2604: &Failure($client, "failed\n", "$cmd:$tail");
2605: } else {
2606: &Reply($client, "ok\n", "$cmd:$tail");
2607: }
2608: } else {
2609: &Failure($client, "not_found\n", "$cmd:$tail");
2610: }
2611: } else {
2612: &Failure($client, "not_home\n", "$cmd:$tail");
2613: }
2614: }
2615: return 1;
2616: }
2617: ®ister_handler("removeuserfile", \&remove_user_file_handler, 0,1,0);
2618:
1.236 albertel 2619: #
2620: # make a directory in a user's home directory userfiles subdirectory.
2621: # Parameters:
2622: # cmd - the Lond request keyword that got us here.
2623: # tail - the part of the command past the keyword.
2624: # client- File descriptor connected with the client.
2625: #
2626: # Returns:
2627: # 1 - Continue processing.
2628: sub mkdir_user_file_handler {
2629: my ($cmd, $tail, $client) = @_;
2630:
2631: my ($dir) = split(/:/, $tail); # Get rid of any tailing :'s lonc may have sent.
2632: $dir=&unescape($dir);
2633: my ($udom,$uname,$ufile) = ($dir =~ m|^([^/]+)/([^/]+)/(.+)$|);
2634: if ($ufile =~m|/\.\./|) {
2635: # any files paths with /../ in them refuse
2636: # to deal with
2637: &Failure($client, "refused\n", "$cmd:$tail");
2638: } else {
2639: my $udir = &propath($udom,$uname);
2640: if (-e $udir) {
1.264 albertel 2641: my $newdir=$udir.'/userfiles/'.$ufile.'/';
2642: if (!&mkpath($newdir)) {
2643: &Failure($client, "failed\n", "$cmd:$tail");
1.236 albertel 2644: }
1.264 albertel 2645: &Reply($client, "ok\n", "$cmd:$tail");
1.236 albertel 2646: } else {
2647: &Failure($client, "not_home\n", "$cmd:$tail");
2648: }
2649: }
2650: return 1;
2651: }
2652: ®ister_handler("mkdiruserfile", \&mkdir_user_file_handler, 0,1,0);
2653:
1.237 albertel 2654: #
2655: # rename a file in a user's home directory userfiles subdirectory.
2656: # Parameters:
2657: # cmd - the Lond request keyword that got us here.
2658: # tail - the part of the command past the keyword.
2659: # client- File descriptor connected with the client.
2660: #
2661: # Returns:
2662: # 1 - Continue processing.
2663: sub rename_user_file_handler {
2664: my ($cmd, $tail, $client) = @_;
2665:
2666: my ($udom,$uname,$old,$new) = split(/:/, $tail);
2667: $old=&unescape($old);
2668: $new=&unescape($new);
2669: if ($new =~m|/\.\./| || $old =~m|/\.\./|) {
2670: # any files paths with /../ in them refuse to deal with
2671: &Failure($client, "refused\n", "$cmd:$tail");
2672: } else {
2673: my $udir = &propath($udom,$uname);
2674: if (-e $udir) {
2675: my $oldfile=$udir.'/userfiles/'.$old;
2676: my $newfile=$udir.'/userfiles/'.$new;
2677: if (-e $newfile) {
2678: &Failure($client, "exists\n", "$cmd:$tail");
2679: } elsif (! -e $oldfile) {
2680: &Failure($client, "not_found\n", "$cmd:$tail");
2681: } else {
2682: if (!rename($oldfile,$newfile)) {
2683: &Failure($client, "failed\n", "$cmd:$tail");
2684: } else {
2685: &Reply($client, "ok\n", "$cmd:$tail");
2686: }
2687: }
2688: } else {
2689: &Failure($client, "not_home\n", "$cmd:$tail");
2690: }
2691: }
2692: return 1;
2693: }
2694: ®ister_handler("renameuserfile", \&rename_user_file_handler, 0,1,0);
2695:
1.227 foxr 2696: #
1.382 albertel 2697: # Checks if the specified user has an active session on the server
2698: # return ok if so, not_found if not
2699: #
2700: # Parameters:
2701: # cmd - The request keyword that dispatched to tus.
2702: # tail - The tail of the request (colon separated parameters).
2703: # client - Filehandle open on the client.
2704: # Return:
2705: # 1.
2706: sub user_has_session_handler {
2707: my ($cmd, $tail, $client) = @_;
2708:
2709: my ($udom, $uname) = map { &unescape($_) } (split(/:/, $tail));
2710:
2711: opendir(DIR,$perlvar{'lonIDsDir'});
2712: my $filename;
2713: while ($filename=readdir(DIR)) {
2714: last if ($filename=~/^\Q$uname\E_\d+_\Q$udom\E_/);
2715: }
2716: if ($filename) {
2717: &Reply($client, "ok\n", "$cmd:$tail");
2718: } else {
2719: &Failure($client, "not_found\n", "$cmd:$tail");
2720: }
2721: return 1;
2722:
2723: }
2724: ®ister_handler("userhassession", \&user_has_session_handler, 0,1,0);
2725:
2726: #
1.263 albertel 2727: # Authenticate access to a user file by checking that the token the user's
2728: # passed also exists in their session file
1.227 foxr 2729: #
2730: # Parameters:
2731: # cmd - The request keyword that dispatched to tus.
2732: # tail - The tail of the request (colon separated parameters).
2733: # client - Filehandle open on the client.
2734: # Return:
2735: # 1.
2736: sub token_auth_user_file_handler {
2737: my ($cmd, $tail, $client) = @_;
2738:
2739: my ($fname, $session) = split(/:/, $tail);
2740:
2741: chomp($session);
1.393 raeburn 2742: my $reply="non_auth";
1.343 albertel 2743: my $file = $perlvar{'lonIDsDir'}.'/'.$session.'.id';
2744: if (open(ENVIN,"$file")) {
1.332 albertel 2745: flock(ENVIN,LOCK_SH);
1.343 albertel 2746: tie(my %disk_env,'GDBM_File',"$file",&GDBM_READER(),0640);
2747: if (exists($disk_env{"userfile.$fname"})) {
1.393 raeburn 2748: $reply="ok";
1.343 albertel 2749: } else {
2750: foreach my $envname (keys(%disk_env)) {
2751: if ($envname=~ m|^userfile\.\Q$fname\E|) {
1.393 raeburn 2752: $reply="ok";
1.343 albertel 2753: last;
2754: }
2755: }
1.227 foxr 2756: }
1.343 albertel 2757: untie(%disk_env);
1.227 foxr 2758: close(ENVIN);
1.387 albertel 2759: &Reply($client, \$reply, "$cmd:$tail");
1.227 foxr 2760: } else {
2761: &Failure($client, "invalid_token\n", "$cmd:$tail");
2762: }
2763: return 1;
2764:
2765: }
2766: ®ister_handler("tokenauthuserfile", \&token_auth_user_file_handler, 0,1,0);
1.229 foxr 2767:
2768: #
2769: # Unsubscribe from a resource.
2770: #
2771: # Parameters:
2772: # $cmd - The command that got us here.
2773: # $tail - Tail of the command (remaining parameters).
2774: # $client - File descriptor connected to client.
2775: # Returns
2776: # 0 - Requested to exit, caller should shut down.
2777: # 1 - Continue processing.
2778: #
2779: sub unsubscribe_handler {
2780: my ($cmd, $tail, $client) = @_;
2781:
2782: my $userinput= "$cmd:$tail";
2783:
2784: my ($fname) = split(/:/,$tail); # Split in case there's extrs.
2785:
2786: &Debug("Unsubscribing $fname");
2787: if (-e $fname) {
2788: &Debug("Exists");
2789: &Reply($client, &unsub($fname,$clientip), $userinput);
2790: } else {
2791: &Failure($client, "not_found\n", $userinput);
2792: }
2793: return 1;
2794: }
2795: ®ister_handler("unsub", \&unsubscribe_handler, 0, 1, 0);
1.263 albertel 2796:
1.230 foxr 2797: # Subscribe to a resource
2798: #
2799: # Parameters:
2800: # $cmd - The command that got us here.
2801: # $tail - Tail of the command (remaining parameters).
2802: # $client - File descriptor connected to client.
2803: # Returns
2804: # 0 - Requested to exit, caller should shut down.
2805: # 1 - Continue processing.
2806: #
2807: sub subscribe_handler {
2808: my ($cmd, $tail, $client)= @_;
2809:
2810: my $userinput = "$cmd:$tail";
2811:
2812: &Reply( $client, &subscribe($userinput,$clientip), $userinput);
2813:
2814: return 1;
2815: }
2816: ®ister_handler("sub", \&subscribe_handler, 0, 1, 0);
2817:
2818: #
1.379 albertel 2819: # Determine the latest version of a resource (it looks for the highest
2820: # past version and then returns that +1)
1.230 foxr 2821: #
2822: # Parameters:
2823: # $cmd - The command that got us here.
2824: # $tail - Tail of the command (remaining parameters).
1.379 albertel 2825: # (Should consist of an absolute path to a file)
1.230 foxr 2826: # $client - File descriptor connected to client.
2827: # Returns
2828: # 0 - Requested to exit, caller should shut down.
2829: # 1 - Continue processing.
2830: #
2831: sub current_version_handler {
2832: my ($cmd, $tail, $client) = @_;
2833:
2834: my $userinput= "$cmd:$tail";
2835:
2836: my $fname = $tail;
2837: &Reply( $client, ¤tversion($fname)."\n", $userinput);
2838: return 1;
2839:
2840: }
2841: ®ister_handler("currentversion", \¤t_version_handler, 0, 1, 0);
2842:
2843: # Make an entry in a user's activity log.
2844: #
2845: # Parameters:
2846: # $cmd - The command that got us here.
2847: # $tail - Tail of the command (remaining parameters).
2848: # $client - File descriptor connected to client.
2849: # Returns
2850: # 0 - Requested to exit, caller should shut down.
2851: # 1 - Continue processing.
2852: #
2853: sub activity_log_handler {
2854: my ($cmd, $tail, $client) = @_;
2855:
2856:
2857: my $userinput= "$cmd:$tail";
2858:
2859: my ($udom,$uname,$what)=split(/:/,$tail);
2860: chomp($what);
2861: my $proname=&propath($udom,$uname);
2862: my $now=time;
2863: my $hfh;
2864: if ($hfh=IO::File->new(">>$proname/activity.log")) {
2865: print $hfh "$now:$clientname:$what\n";
2866: &Reply( $client, "ok\n", $userinput);
2867: } else {
2868: &Failure($client, "error: ".($!+0)." IO::File->new Failed "
2869: ."while attempting log\n",
2870: $userinput);
2871: }
2872:
2873: return 1;
2874: }
1.263 albertel 2875: ®ister_handler("log", \&activity_log_handler, 0, 1, 0);
1.230 foxr 2876:
2877: #
2878: # Put a namespace entry in a user profile hash.
2879: # My druthers would be for this to be an encrypted interaction too.
2880: # anything that might be an inadvertent covert channel about either
2881: # user authentication or user personal information....
2882: #
2883: # Parameters:
2884: # $cmd - The command that got us here.
2885: # $tail - Tail of the command (remaining parameters).
2886: # $client - File descriptor connected to client.
2887: # Returns
2888: # 0 - Requested to exit, caller should shut down.
2889: # 1 - Continue processing.
2890: #
2891: sub put_user_profile_entry {
2892: my ($cmd, $tail, $client) = @_;
1.229 foxr 2893:
1.230 foxr 2894: my $userinput = "$cmd:$tail";
2895:
1.242 raeburn 2896: my ($udom,$uname,$namespace,$what) =split(/:/,$tail,4);
1.230 foxr 2897: if ($namespace ne 'roles') {
2898: chomp($what);
2899: my $hashref = &tie_user_hash($udom, $uname, $namespace,
2900: &GDBM_WRCREAT(),"P",$what);
2901: if($hashref) {
2902: my @pairs=split(/\&/,$what);
2903: foreach my $pair (@pairs) {
2904: my ($key,$value)=split(/=/,$pair);
2905: $hashref->{$key}=$value;
2906: }
1.311 albertel 2907: if (&untie_user_hash($hashref)) {
1.230 foxr 2908: &Reply( $client, "ok\n", $userinput);
2909: } else {
2910: &Failure($client, "error: ".($!+0)." untie(GDBM) failed ".
2911: "while attempting put\n",
2912: $userinput);
2913: }
2914: } else {
1.316 albertel 2915: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
1.230 foxr 2916: "while attempting put\n", $userinput);
2917: }
2918: } else {
2919: &Failure( $client, "refused\n", $userinput);
2920: }
2921:
2922: return 1;
2923: }
2924: ®ister_handler("put", \&put_user_profile_entry, 0, 1, 0);
2925:
1.283 albertel 2926: # Put a piece of new data in hash, returns error if entry already exists
2927: # Parameters:
2928: # $cmd - The command that got us here.
2929: # $tail - Tail of the command (remaining parameters).
2930: # $client - File descriptor connected to client.
2931: # Returns
2932: # 0 - Requested to exit, caller should shut down.
2933: # 1 - Continue processing.
2934: #
2935: sub newput_user_profile_entry {
2936: my ($cmd, $tail, $client) = @_;
2937:
2938: my $userinput = "$cmd:$tail";
2939:
2940: my ($udom,$uname,$namespace,$what) =split(/:/,$tail,4);
2941: if ($namespace eq 'roles') {
2942: &Failure( $client, "refused\n", $userinput);
2943: return 1;
2944: }
2945:
2946: chomp($what);
2947:
2948: my $hashref = &tie_user_hash($udom, $uname, $namespace,
2949: &GDBM_WRCREAT(),"N",$what);
2950: if(!$hashref) {
1.316 albertel 2951: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
1.283 albertel 2952: "while attempting put\n", $userinput);
2953: return 1;
2954: }
2955:
2956: my @pairs=split(/\&/,$what);
2957: foreach my $pair (@pairs) {
2958: my ($key,$value)=split(/=/,$pair);
2959: if (exists($hashref->{$key})) {
1.489.2.17 raeburn 2960: if (!&untie_user_hash($hashref)) {
2961: &logthis("error: ".($!+0)." untie (GDBM) failed ".
2962: "while attempting newput - early out as key exists");
2963: }
1.283 albertel 2964: &Failure($client, "key_exists: ".$key."\n",$userinput);
2965: return 1;
2966: }
2967: }
2968:
2969: foreach my $pair (@pairs) {
2970: my ($key,$value)=split(/=/,$pair);
2971: $hashref->{$key}=$value;
2972: }
2973:
1.311 albertel 2974: if (&untie_user_hash($hashref)) {
1.283 albertel 2975: &Reply( $client, "ok\n", $userinput);
2976: } else {
2977: &Failure($client, "error: ".($!+0)." untie(GDBM) failed ".
2978: "while attempting put\n",
2979: $userinput);
2980: }
2981: return 1;
2982: }
2983: ®ister_handler("newput", \&newput_user_profile_entry, 0, 1, 0);
2984:
1.230 foxr 2985: #
2986: # Increment a profile entry in the user history file.
2987: # The history contains keyword value pairs. In this case,
2988: # The value itself is a pair of numbers. The first, the current value
2989: # the second an increment that this function applies to the current
2990: # value.
2991: #
2992: # Parameters:
2993: # $cmd - The command that got us here.
2994: # $tail - Tail of the command (remaining parameters).
2995: # $client - File descriptor connected to client.
2996: # Returns
2997: # 0 - Requested to exit, caller should shut down.
2998: # 1 - Continue processing.
2999: #
3000: sub increment_user_value_handler {
3001: my ($cmd, $tail, $client) = @_;
3002:
3003: my $userinput = "$cmd:$tail";
3004:
3005: my ($udom,$uname,$namespace,$what) =split(/:/,$tail);
3006: if ($namespace ne 'roles') {
3007: chomp($what);
3008: my $hashref = &tie_user_hash($udom, $uname,
3009: $namespace, &GDBM_WRCREAT(),
3010: "P",$what);
3011: if ($hashref) {
3012: my @pairs=split(/\&/,$what);
3013: foreach my $pair (@pairs) {
3014: my ($key,$value)=split(/=/,$pair);
1.284 raeburn 3015: $value = &unescape($value);
1.230 foxr 3016: # We could check that we have a number...
3017: if (! defined($value) || $value eq '') {
3018: $value = 1;
3019: }
3020: $hashref->{$key}+=$value;
1.284 raeburn 3021: if ($namespace eq 'nohist_resourcetracker') {
3022: if ($hashref->{$key} < 0) {
3023: $hashref->{$key} = 0;
3024: }
3025: }
1.230 foxr 3026: }
1.311 albertel 3027: if (&untie_user_hash($hashref)) {
1.230 foxr 3028: &Reply( $client, "ok\n", $userinput);
3029: } else {
3030: &Failure($client, "error: ".($!+0)." untie(GDBM) failed ".
3031: "while attempting inc\n", $userinput);
3032: }
3033: } else {
3034: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
3035: "while attempting inc\n", $userinput);
3036: }
3037: } else {
3038: &Failure($client, "refused\n", $userinput);
3039: }
3040:
3041: return 1;
3042: }
3043: ®ister_handler("inc", \&increment_user_value_handler, 0, 1, 0);
3044:
3045: #
3046: # Put a new role for a user. Roles are LonCAPA's packaging of permissions.
3047: # Each 'role' a user has implies a set of permissions. Adding a new role
3048: # for a person grants the permissions packaged with that role
3049: # to that user when the role is selected.
3050: #
3051: # Parameters:
3052: # $cmd - The command string (rolesput).
3053: # $tail - The remainder of the request line. For rolesput this
3054: # consists of a colon separated list that contains:
3055: # The domain and user that is granting the role (logged).
3056: # The domain and user that is getting the role.
3057: # The roles being granted as a set of & separated pairs.
3058: # each pair a key value pair.
3059: # $client - File descriptor connected to the client.
3060: # Returns:
3061: # 0 - If the daemon should exit
3062: # 1 - To continue processing.
3063: #
3064: #
3065: sub roles_put_handler {
3066: my ($cmd, $tail, $client) = @_;
3067:
3068: my $userinput = "$cmd:$tail";
3069:
3070: my ( $exedom, $exeuser, $udom, $uname, $what) = split(/:/,$tail);
3071:
3072:
3073: my $namespace='roles';
3074: chomp($what);
3075: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3076: &GDBM_WRCREAT(), "P",
3077: "$exedom:$exeuser:$what");
3078: #
3079: # Log the attempt to set a role. The {}'s here ensure that the file
3080: # handle is open for the minimal amount of time. Since the flush
3081: # is done on close this improves the chances the log will be an un-
3082: # corrupted ordered thing.
3083: if ($hashref) {
1.261 foxr 3084: my $pass_entry = &get_auth_type($udom, $uname);
3085: my ($auth_type,$pwd) = split(/:/, $pass_entry);
3086: $auth_type = $auth_type.":";
1.230 foxr 3087: my @pairs=split(/\&/,$what);
3088: foreach my $pair (@pairs) {
3089: my ($key,$value)=split(/=/,$pair);
3090: &manage_permissions($key, $udom, $uname,
1.260 foxr 3091: $auth_type);
1.230 foxr 3092: $hashref->{$key}=$value;
3093: }
1.311 albertel 3094: if (&untie_user_hash($hashref)) {
1.230 foxr 3095: &Reply($client, "ok\n", $userinput);
3096: } else {
3097: &Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ".
3098: "while attempting rolesput\n", $userinput);
3099: }
3100: } else {
3101: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
3102: "while attempting rolesput\n", $userinput);
3103: }
3104: return 1;
3105: }
3106: ®ister_handler("rolesput", \&roles_put_handler, 1,1,0); # Encoded client only.
3107:
3108: #
1.231 foxr 3109: # Deletes (removes) a role for a user. This is equivalent to removing
3110: # a permissions package associated with the role from the user's profile.
3111: #
3112: # Parameters:
3113: # $cmd - The command (rolesdel)
3114: # $tail - The remainder of the request line. This consists
3115: # of:
3116: # The domain and user requesting the change (logged)
3117: # The domain and user being changed.
3118: # The roles being revoked. These are shipped to us
3119: # as a bunch of & separated role name keywords.
3120: # $client - The file handle open on the client.
3121: # Returns:
3122: # 1 - Continue processing
3123: # 0 - Exit.
3124: #
3125: sub roles_delete_handler {
3126: my ($cmd, $tail, $client) = @_;
3127:
3128: my $userinput = "$cmd:$tail";
3129:
3130: my ($exedom,$exeuser,$udom,$uname,$what)=split(/:/,$tail);
3131: &Debug("cmd = ".$cmd." exedom= ".$exedom."user = ".$exeuser." udom=".$udom.
3132: "what = ".$what);
3133: my $namespace='roles';
3134: chomp($what);
3135: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3136: &GDBM_WRCREAT(), "D",
3137: "$exedom:$exeuser:$what");
3138:
3139: if ($hashref) {
3140: my @rolekeys=split(/\&/,$what);
3141:
3142: foreach my $key (@rolekeys) {
3143: delete $hashref->{$key};
3144: }
1.315 albertel 3145: if (&untie_user_hash($hashref)) {
1.231 foxr 3146: &Reply($client, "ok\n", $userinput);
3147: } else {
3148: &Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ".
3149: "while attempting rolesdel\n", $userinput);
3150: }
3151: } else {
3152: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
3153: "while attempting rolesdel\n", $userinput);
3154: }
3155:
3156: return 1;
3157: }
3158: ®ister_handler("rolesdel", \&roles_delete_handler, 1,1, 0); # Encoded client only
3159:
3160: # Unencrypted get from a user's profile database. See
3161: # GetProfileEntryEncrypted for a version that does end-to-end encryption.
3162: # This function retrieves a keyed item from a specific named database in the
3163: # user's directory.
3164: #
3165: # Parameters:
3166: # $cmd - Command request keyword (get).
3167: # $tail - Tail of the command. This is a colon separated list
3168: # consisting of the domain and username that uniquely
3169: # identifies the profile,
3170: # The 'namespace' which selects the gdbm file to
3171: # do the lookup in,
3172: # & separated list of keys to lookup. Note that
3173: # the values are returned as an & separated list too.
3174: # $client - File descriptor open on the client.
3175: # Returns:
3176: # 1 - Continue processing.
3177: # 0 - Exit.
3178: #
3179: sub get_profile_entry {
3180: my ($cmd, $tail, $client) = @_;
3181:
3182: my $userinput= "$cmd:$tail";
3183:
3184: my ($udom,$uname,$namespace,$what) = split(/:/,$tail);
3185: chomp($what);
1.255 foxr 3186:
1.390 raeburn 3187:
1.255 foxr 3188: my $replystring = read_profile($udom, $uname, $namespace, $what);
3189: my ($first) = split(/:/,$replystring);
3190: if($first ne "error") {
1.387 albertel 3191: &Reply($client, \$replystring, $userinput);
1.231 foxr 3192: } else {
1.255 foxr 3193: &Failure($client, $replystring." while attempting get\n", $userinput);
1.231 foxr 3194: }
3195: return 1;
1.255 foxr 3196:
3197:
1.231 foxr 3198: }
3199: ®ister_handler("get", \&get_profile_entry, 0,1,0);
3200:
3201: #
3202: # Process the encrypted get request. Note that the request is sent
3203: # in clear, but the reply is encrypted. This is a small covert channel:
3204: # information about the sensitive keys is given to the snooper. Just not
3205: # information about the values of the sensitive key. Hmm if I wanted to
3206: # know these I'd snoop for the egets. Get the profile item names from them
3207: # and then issue a get for them since there's no enforcement of the
3208: # requirement of an encrypted get for particular profile items. If I
3209: # were re-doing this, I'd force the request to be encrypted as well as the
3210: # reply. I'd also just enforce encrypted transactions for all gets since
3211: # that would prevent any covert channel snooping.
3212: #
3213: # Parameters:
3214: # $cmd - Command keyword of request (eget).
3215: # $tail - Tail of the command. See GetProfileEntry
# for more information about this.
3216: # $client - File open on the client.
3217: # Returns:
3218: # 1 - Continue processing
3219: # 0 - server should exit.
3220: sub get_profile_entry_encrypted {
3221: my ($cmd, $tail, $client) = @_;
3222:
3223: my $userinput = "$cmd:$tail";
3224:
1.339 albertel 3225: my ($udom,$uname,$namespace,$what) = split(/:/,$tail);
1.231 foxr 3226: chomp($what);
1.255 foxr 3227: my $qresult = read_profile($udom, $uname, $namespace, $what);
3228: my ($first) = split(/:/, $qresult);
3229: if($first ne "error") {
3230:
3231: if ($cipher) {
3232: my $cmdlength=length($qresult);
3233: $qresult.=" ";
3234: my $encqresult='';
3235: for(my $encidx=0;$encidx<=$cmdlength;$encidx+=8) {
3236: $encqresult.= unpack("H16",
3237: $cipher->encrypt(substr($qresult,
3238: $encidx,
3239: 8)));
3240: }
3241: &Reply( $client, "enc:$cmdlength:$encqresult\n", $userinput);
3242: } else {
1.231 foxr 3243: &Failure( $client, "error:no_key\n", $userinput);
3244: }
3245: } else {
1.255 foxr 3246: &Failure($client, "$qresult while attempting eget\n", $userinput);
3247:
1.231 foxr 3248: }
3249:
3250: return 1;
3251: }
1.255 foxr 3252: ®ister_handler("eget", \&get_profile_entry_encrypted, 0, 1, 0);
1.263 albertel 3253:
1.231 foxr 3254: #
3255: # Deletes a key in a user profile database.
3256: #
3257: # Parameters:
3258: # $cmd - Command keyword (del).
3259: # $tail - Command tail. IN this case a colon
3260: # separated list containing:
3261: # The domain and user that identifies uniquely
3262: # the identity of the user.
3263: # The profile namespace (name of the profile
3264: # database file).
3265: # & separated list of keywords to delete.
3266: # $client - File open on client socket.
3267: # Returns:
3268: # 1 - Continue processing
3269: # 0 - Exit server.
3270: #
3271: #
3272: sub delete_profile_entry {
3273: my ($cmd, $tail, $client) = @_;
3274:
3275: my $userinput = "cmd:$tail";
3276:
3277: my ($udom,$uname,$namespace,$what) = split(/:/,$tail);
3278: chomp($what);
3279: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3280: &GDBM_WRCREAT(),
3281: "D",$what);
3282: if ($hashref) {
3283: my @keys=split(/\&/,$what);
3284: foreach my $key (@keys) {
3285: delete($hashref->{$key});
3286: }
1.315 albertel 3287: if (&untie_user_hash($hashref)) {
1.231 foxr 3288: &Reply($client, "ok\n", $userinput);
3289: } else {
3290: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
3291: "while attempting del\n", $userinput);
3292: }
3293: } else {
3294: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
3295: "while attempting del\n", $userinput);
3296: }
3297: return 1;
3298: }
3299: ®ister_handler("del", \&delete_profile_entry, 0, 1, 0);
1.263 albertel 3300:
1.231 foxr 3301: #
3302: # List the set of keys that are defined in a profile database file.
3303: # A successful reply from this will contain an & separated list of
3304: # the keys.
3305: # Parameters:
3306: # $cmd - Command request (keys).
3307: # $tail - Remainder of the request, a colon separated
3308: # list containing domain/user that identifies the
3309: # user being queried, and the database namespace
3310: # (database filename essentially).
3311: # $client - File open on the client.
3312: # Returns:
3313: # 1 - Continue processing.
3314: # 0 - Exit the server.
3315: #
3316: sub get_profile_keys {
3317: my ($cmd, $tail, $client) = @_;
3318:
3319: my $userinput = "$cmd:$tail";
3320:
3321: my ($udom,$uname,$namespace)=split(/:/,$tail);
3322: my $qresult='';
3323: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3324: &GDBM_READER());
3325: if ($hashref) {
3326: foreach my $key (keys %$hashref) {
3327: $qresult.="$key&";
3328: }
1.315 albertel 3329: if (&untie_user_hash($hashref)) {
1.231 foxr 3330: $qresult=~s/\&$//;
1.387 albertel 3331: &Reply($client, \$qresult, $userinput);
1.231 foxr 3332: } else {
3333: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
3334: "while attempting keys\n", $userinput);
3335: }
3336: } else {
3337: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
3338: "while attempting keys\n", $userinput);
3339: }
3340:
3341: return 1;
3342: }
3343: ®ister_handler("keys", \&get_profile_keys, 0, 1, 0);
3344:
3345: #
3346: # Dump the contents of a user profile database.
3347: # Note that this constitutes a very large covert channel too since
3348: # the dump will return sensitive information that is not encrypted.
3349: # The naive security assumption is that the session negotiation ensures
3350: # our client is trusted and I don't believe that's assured at present.
3351: # Sure want badly to go to ssl or tls. Of course if my peer isn't really
3352: # a LonCAPA node they could have negotiated an encryption key too so >sigh<.
3353: #
3354: # Parameters:
3355: # $cmd - The command request keyword (currentdump).
3356: # $tail - Remainder of the request, consisting of a colon
3357: # separated list that has the domain/username and
3358: # the namespace to dump (database file).
3359: # $client - file open on the remote client.
3360: # Returns:
3361: # 1 - Continue processing.
3362: # 0 - Exit the server.
3363: #
3364: sub dump_profile_database {
3365: my ($cmd, $tail, $client) = @_;
3366:
3367: my $userinput = "$cmd:$tail";
3368:
3369: my ($udom,$uname,$namespace) = split(/:/,$tail);
3370: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3371: &GDBM_READER());
3372: if ($hashref) {
3373: # Structure of %data:
3374: # $data{$symb}->{$parameter}=$value;
3375: # $data{$symb}->{'v.'.$parameter}=$version;
3376: # since $parameter will be unescaped, we do not
3377: # have to worry about silly parameter names...
3378:
3379: my $qresult='';
3380: my %data = (); # A hash of anonymous hashes..
3381: while (my ($key,$value) = each(%$hashref)) {
3382: my ($v,$symb,$param) = split(/:/,$key);
3383: next if ($v eq 'version' || $symb eq 'keys');
3384: next if (exists($data{$symb}) &&
3385: exists($data{$symb}->{$param}) &&
3386: $data{$symb}->{'v.'.$param} > $v);
3387: $data{$symb}->{$param}=$value;
3388: $data{$symb}->{'v.'.$param}=$v;
3389: }
1.311 albertel 3390: if (&untie_user_hash($hashref)) {
1.231 foxr 3391: while (my ($symb,$param_hash) = each(%data)) {
3392: while(my ($param,$value) = each (%$param_hash)){
3393: next if ($param =~ /^v\./); # Ignore versions...
3394: #
3395: # Just dump the symb=value pairs separated by &
3396: #
3397: $qresult.=$symb.':'.$param.'='.$value.'&';
3398: }
3399: }
3400: chop($qresult);
1.387 albertel 3401: &Reply($client , \$qresult, $userinput);
1.231 foxr 3402: } else {
3403: &Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ".
3404: "while attempting currentdump\n", $userinput);
3405: }
3406: } else {
3407: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
3408: "while attempting currentdump\n", $userinput);
3409: }
3410:
3411: return 1;
3412: }
3413: ®ister_handler("currentdump", \&dump_profile_database, 0, 1, 0);
3414:
3415: #
3416: # Dump a profile database with an optional regular expression
3417: # to match against the keys. In this dump, no effort is made
3418: # to separate symb from version information. Presumably the
3419: # databases that are dumped by this command are of a different
3420: # structure. Need to look at this and improve the documentation of
3421: # both this and the currentdump handler.
3422: # Parameters:
3423: # $cmd - The command keyword.
3424: # $tail - All of the characters after the $cmd:
3425: # These are expected to be a colon
3426: # separated list containing:
3427: # domain/user - identifying the user.
3428: # namespace - identifying the database.
3429: # regexp - optional regular expression
3430: # that is matched against
3431: # database keywords to do
3432: # selective dumps.
1.488 raeburn 3433: # range - optional range of entries
3434: # e.g., 10-20 would return the
3435: # 10th to 19th items, etc.
1.231 foxr 3436: # $client - Channel open on the client.
3437: # Returns:
3438: # 1 - Continue processing.
3439: # Side effects:
3440: # response is written to $client.
3441: #
3442: sub dump_with_regexp {
3443: my ($cmd, $tail, $client) = @_;
3444:
1.489.2.4 raeburn 3445: my $res = LONCAPA::Lond::dump_with_regexp($tail, $clientversion);
1.231 foxr 3446:
1.489.2.4 raeburn 3447: if ($res =~ /^error:/) {
3448: &Failure($client, \$res, "$cmd:$tail");
1.231 foxr 3449: } else {
1.489.2.4 raeburn 3450: &Reply($client, \$res, "$cmd:$tail");
1.231 foxr 3451: }
3452:
3453: return 1;
3454: }
3455: ®ister_handler("dump", \&dump_with_regexp, 0, 1, 0);
3456:
3457: # Store a set of key=value pairs associated with a versioned name.
3458: #
3459: # Parameters:
3460: # $cmd - Request command keyword.
3461: # $tail - Tail of the request. This is a colon
3462: # separated list containing:
3463: # domain/user - User and authentication domain.
3464: # namespace - Name of the database being modified
3465: # rid - Resource keyword to modify.
3466: # what - new value associated with rid.
1.489.2.17 raeburn 3467: # laststore - (optional) version=timestamp
3468: # for most recent transaction for rid
3469: # in namespace, when cstore was called
1.231 foxr 3470: #
3471: # $client - Socket open on the client.
3472: #
3473: #
3474: # Returns:
3475: # 1 (keep on processing).
3476: # Side-Effects:
3477: # Writes to the client
1.489.2.17 raeburn 3478: # Successful storage will cause either 'ok', or, if $laststore was included
3479: # in the tail of the request, and the version number for the last transaction
3480: # is larger than the version in $laststore, delay:$numtrans , where $numtrans
3481: # is the number of store evevnts recorded for rid in namespace since
3482: # lonnet::store() was called by the client.
3483: #
1.231 foxr 3484: sub store_handler {
3485: my ($cmd, $tail, $client) = @_;
3486:
3487: my $userinput = "$cmd:$tail";
3488:
1.489.2.17 raeburn 3489: chomp($tail);
3490: my ($udom,$uname,$namespace,$rid,$what,$laststore) =split(/:/,$tail);
1.231 foxr 3491: if ($namespace ne 'roles') {
3492:
3493: my @pairs=split(/\&/,$what);
3494: my $hashref = &tie_user_hash($udom, $uname, $namespace,
1.268 albertel 3495: &GDBM_WRCREAT(), "S",
1.231 foxr 3496: "$rid:$what");
3497: if ($hashref) {
3498: my $now = time;
1.489.2.17 raeburn 3499: my $numtrans;
3500: if ($laststore) {
3501: my ($previousversion,$previoustime) = split(/\=/,$laststore);
3502: my ($lastversion,$lasttime) = (0,0);
3503: $lastversion = $hashref->{"version:$rid"};
3504: if ($lastversion) {
3505: $lasttime = $hashref->{"$lastversion:$rid:timestamp"};
3506: }
3507: if (($previousversion) && ($previousversion !~ /\D/)) {
3508: if (($lastversion > $previousversion) && ($lasttime >= $previoustime)) {
3509: $numtrans = $lastversion - $previousversion;
3510: }
3511: } elsif ($lastversion) {
3512: $numtrans = $lastversion;
3513: }
3514: if ($numtrans) {
3515: $numtrans =~ s/D//g;
3516: }
3517: }
3518:
1.231 foxr 3519: $hashref->{"version:$rid"}++;
3520: my $version=$hashref->{"version:$rid"};
3521: my $allkeys='';
3522: foreach my $pair (@pairs) {
3523: my ($key,$value)=split(/=/,$pair);
3524: $allkeys.=$key.':';
3525: $hashref->{"$version:$rid:$key"}=$value;
3526: }
3527: $hashref->{"$version:$rid:timestamp"}=$now;
3528: $allkeys.='timestamp';
3529: $hashref->{"$version:keys:$rid"}=$allkeys;
1.311 albertel 3530: if (&untie_user_hash($hashref)) {
1.489.2.17 raeburn 3531: my $msg = 'ok';
3532: if ($numtrans) {
3533: $msg = 'delay:'.$numtrans;
3534: }
3535: &Reply($client, "$msg\n", $userinput);
1.231 foxr 3536: } else {
3537: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
3538: "while attempting store\n", $userinput);
3539: }
3540: } else {
3541: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
3542: "while attempting store\n", $userinput);
3543: }
3544: } else {
3545: &Failure($client, "refused\n", $userinput);
3546: }
3547:
3548: return 1;
3549: }
3550: ®ister_handler("store", \&store_handler, 0, 1, 0);
1.263 albertel 3551:
1.323 albertel 3552: # Modify a set of key=value pairs associated with a versioned name.
3553: #
3554: # Parameters:
3555: # $cmd - Request command keyword.
3556: # $tail - Tail of the request. This is a colon
3557: # separated list containing:
3558: # domain/user - User and authentication domain.
3559: # namespace - Name of the database being modified
3560: # rid - Resource keyword to modify.
3561: # v - Version item to modify
3562: # what - new value associated with rid.
3563: #
3564: # $client - Socket open on the client.
3565: #
3566: #
3567: # Returns:
3568: # 1 (keep on processing).
3569: # Side-Effects:
3570: # Writes to the client
3571: sub putstore_handler {
3572: my ($cmd, $tail, $client) = @_;
3573:
3574: my $userinput = "$cmd:$tail";
3575:
3576: my ($udom,$uname,$namespace,$rid,$v,$what) =split(/:/,$tail);
3577: if ($namespace ne 'roles') {
3578:
3579: chomp($what);
3580: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3581: &GDBM_WRCREAT(), "M",
3582: "$rid:$v:$what");
3583: if ($hashref) {
3584: my $now = time;
3585: my %data = &hash_extract($what);
3586: my @allkeys;
3587: while (my($key,$value) = each(%data)) {
3588: push(@allkeys,$key);
3589: $hashref->{"$v:$rid:$key"} = $value;
3590: }
3591: my $allkeys = join(':',@allkeys);
3592: $hashref->{"$v:keys:$rid"}=$allkeys;
3593:
3594: if (&untie_user_hash($hashref)) {
3595: &Reply($client, "ok\n", $userinput);
3596: } else {
3597: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
3598: "while attempting store\n", $userinput);
3599: }
3600: } else {
3601: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
3602: "while attempting store\n", $userinput);
3603: }
3604: } else {
3605: &Failure($client, "refused\n", $userinput);
3606: }
3607:
3608: return 1;
3609: }
3610: ®ister_handler("putstore", \&putstore_handler, 0, 1, 0);
3611:
3612: sub hash_extract {
3613: my ($str)=@_;
3614: my %hash;
3615: foreach my $pair (split(/\&/,$str)) {
3616: my ($key,$value)=split(/=/,$pair);
3617: $hash{$key}=$value;
3618: }
3619: return (%hash);
3620: }
3621: sub hash_to_str {
3622: my ($hash_ref)=@_;
3623: my $str;
3624: foreach my $key (keys(%$hash_ref)) {
3625: $str.=$key.'='.$hash_ref->{$key}.'&';
3626: }
3627: $str=~s/\&$//;
3628: return $str;
3629: }
3630:
1.231 foxr 3631: #
3632: # Dump out all versions of a resource that has key=value pairs associated
3633: # with it for each version. These resources are built up via the store
3634: # command.
3635: #
3636: # Parameters:
3637: # $cmd - Command keyword.
3638: # $tail - Remainder of the request which consists of:
3639: # domain/user - User and auth. domain.
3640: # namespace - name of resource database.
3641: # rid - Resource id.
3642: # $client - socket open on the client.
3643: #
3644: # Returns:
3645: # 1 indicating the caller should not yet exit.
3646: # Side-effects:
3647: # Writes a reply to the client.
3648: # The reply is a string of the following shape:
3649: # version=current&version:keys=k1:k2...&1:k1=v1&1:k2=v2...
3650: # Where the 1 above represents version 1.
3651: # this continues for all pairs of keys in all versions.
3652: #
3653: #
3654: #
3655: #
3656: sub restore_handler {
3657: my ($cmd, $tail, $client) = @_;
3658:
3659: my $userinput = "$cmd:$tail"; # Only used for logging purposes.
1.351 banghart 3660: my ($udom,$uname,$namespace,$rid) = split(/:/,$tail);
1.352 albertel 3661: $namespace=~s/\//\_/g;
1.350 albertel 3662: $namespace = &LONCAPA::clean_username($namespace);
1.349 albertel 3663:
1.231 foxr 3664: chomp($rid);
3665: my $qresult='';
1.309 albertel 3666: my $hashref = &tie_user_hash($udom, $uname, $namespace, &GDBM_READER());
3667: if ($hashref) {
3668: my $version=$hashref->{"version:$rid"};
1.231 foxr 3669: $qresult.="version=$version&";
3670: my $scope;
3671: for ($scope=1;$scope<=$version;$scope++) {
1.309 albertel 3672: my $vkeys=$hashref->{"$scope:keys:$rid"};
1.231 foxr 3673: my @keys=split(/:/,$vkeys);
3674: my $key;
3675: $qresult.="$scope:keys=$vkeys&";
3676: foreach $key (@keys) {
1.309 albertel 3677: $qresult.="$scope:$key=".$hashref->{"$scope:$rid:$key"}."&";
1.231 foxr 3678: }
3679: }
1.311 albertel 3680: if (&untie_user_hash($hashref)) {
1.231 foxr 3681: $qresult=~s/\&$//;
1.387 albertel 3682: &Reply( $client, \$qresult, $userinput);
1.231 foxr 3683: } else {
3684: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
3685: "while attempting restore\n", $userinput);
3686: }
3687: } else {
3688: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
3689: "while attempting restore\n", $userinput);
3690: }
3691:
3692: return 1;
3693:
3694:
3695: }
3696: ®ister_handler("restore", \&restore_handler, 0,1,0);
1.234 foxr 3697:
3698: #
1.324 raeburn 3699: # Add a chat message to a synchronous discussion board.
1.234 foxr 3700: #
3701: # Parameters:
3702: # $cmd - Request keyword.
3703: # $tail - Tail of the command. A colon separated list
3704: # containing:
3705: # cdom - Domain on which the chat board lives
1.324 raeburn 3706: # cnum - Course containing the chat board.
3707: # newpost - Body of the posting.
3708: # group - Optional group, if chat board is only
3709: # accessible in a group within the course
1.234 foxr 3710: # $client - Socket open on the client.
3711: # Returns:
3712: # 1 - Indicating caller should keep on processing.
3713: #
3714: # Side-effects:
3715: # writes a reply to the client.
3716: #
3717: #
3718: sub send_chat_handler {
3719: my ($cmd, $tail, $client) = @_;
3720:
3721:
3722: my $userinput = "$cmd:$tail";
3723:
1.324 raeburn 3724: my ($cdom,$cnum,$newpost,$group)=split(/\:/,$tail);
3725: &chat_add($cdom,$cnum,$newpost,$group);
1.234 foxr 3726: &Reply($client, "ok\n", $userinput);
3727:
3728: return 1;
3729: }
3730: ®ister_handler("chatsend", \&send_chat_handler, 0, 1, 0);
1.263 albertel 3731:
1.234 foxr 3732: #
1.324 raeburn 3733: # Retrieve the set of chat messages from a discussion board.
1.234 foxr 3734: #
3735: # Parameters:
3736: # $cmd - Command keyword that initiated the request.
3737: # $tail - Remainder of the request after the command
3738: # keyword. In this case a colon separated list of
3739: # chat domain - Which discussion board.
3740: # chat id - Discussion thread(?)
3741: # domain/user - Authentication domain and username
3742: # of the requesting person.
1.324 raeburn 3743: # group - Optional course group containing
3744: # the board.
1.234 foxr 3745: # $client - Socket open on the client program.
3746: # Returns:
3747: # 1 - continue processing
3748: # Side effects:
3749: # Response is written to the client.
3750: #
3751: sub retrieve_chat_handler {
3752: my ($cmd, $tail, $client) = @_;
3753:
3754:
3755: my $userinput = "$cmd:$tail";
3756:
1.324 raeburn 3757: my ($cdom,$cnum,$udom,$uname,$group)=split(/\:/,$tail);
1.234 foxr 3758: my $reply='';
1.324 raeburn 3759: foreach (&get_chat($cdom,$cnum,$udom,$uname,$group)) {
1.234 foxr 3760: $reply.=&escape($_).':';
3761: }
3762: $reply=~s/\:$//;
1.387 albertel 3763: &Reply($client, \$reply, $userinput);
1.234 foxr 3764:
3765:
3766: return 1;
3767: }
3768: ®ister_handler("chatretr", \&retrieve_chat_handler, 0, 1, 0);
3769:
3770: #
3771: # Initiate a query of an sql database. SQL query repsonses get put in
3772: # a file for later retrieval. This prevents sql query results from
3773: # bottlenecking the system. Note that with loncnew, perhaps this is
3774: # less of an issue since multiple outstanding requests can be concurrently
3775: # serviced.
3776: #
3777: # Parameters:
3778: # $cmd - COmmand keyword that initiated the request.
3779: # $tail - Remainder of the command after the keyword.
3780: # For this function, this consists of a query and
3781: # 3 arguments that are self-documentingly labelled
3782: # in the original arg1, arg2, arg3.
3783: # $client - Socket open on the client.
3784: # Return:
3785: # 1 - Indicating processing should continue.
3786: # Side-effects:
3787: # a reply is written to $client.
3788: #
3789: sub send_query_handler {
3790: my ($cmd, $tail, $client) = @_;
3791:
3792:
3793: my $userinput = "$cmd:$tail";
3794:
3795: my ($query,$arg1,$arg2,$arg3)=split(/\:/,$tail);
3796: $query=~s/\n*$//g;
3797: &Reply($client, "". &sql_reply("$clientname\&$query".
3798: "\&$arg1"."\&$arg2"."\&$arg3")."\n",
3799: $userinput);
3800:
3801: return 1;
3802: }
3803: ®ister_handler("querysend", \&send_query_handler, 0, 1, 0);
3804:
3805: #
3806: # Add a reply to an sql query. SQL queries are done asyncrhonously.
3807: # The query is submitted via a "querysend" transaction.
3808: # There it is passed on to the lonsql daemon, queued and issued to
3809: # mysql.
3810: # This transaction is invoked when the sql transaction is complete
3811: # it stores the query results in flie and indicates query completion.
3812: # presumably local software then fetches this response... I'm guessing
3813: # the sequence is: lonc does a querysend, we ask lonsql to do it.
3814: # lonsql on completion of the query interacts with the lond of our
3815: # client to do a query reply storing two files:
3816: # - id - The results of the query.
3817: # - id.end - Indicating the transaction completed.
3818: # NOTE: id is a unique id assigned to the query and querysend time.
3819: # Parameters:
3820: # $cmd - Command keyword that initiated this request.
3821: # $tail - Remainder of the tail. In this case that's a colon
3822: # separated list containing the query Id and the
3823: # results of the query.
3824: # $client - Socket open on the client.
3825: # Return:
3826: # 1 - Indicating that we should continue processing.
3827: # Side effects:
3828: # ok written to the client.
3829: #
3830: sub reply_query_handler {
3831: my ($cmd, $tail, $client) = @_;
3832:
3833:
3834: my $userinput = "$cmd:$tail";
3835:
1.339 albertel 3836: my ($id,$reply)=split(/:/,$tail);
1.234 foxr 3837: my $store;
3838: my $execdir=$perlvar{'lonDaemons'};
3839: if ($store=IO::File->new(">$execdir/tmp/$id")) {
3840: $reply=~s/\&/\n/g;
3841: print $store $reply;
3842: close $store;
3843: my $store2=IO::File->new(">$execdir/tmp/$id.end");
3844: print $store2 "done\n";
3845: close $store2;
3846: &Reply($client, "ok\n", $userinput);
3847: } else {
3848: &Failure($client, "error: ".($!+0)
3849: ." IO::File->new Failed ".
3850: "while attempting queryreply\n", $userinput);
3851: }
3852:
3853:
3854: return 1;
3855: }
3856: ®ister_handler("queryreply", \&reply_query_handler, 0, 1, 0);
3857:
3858: #
3859: # Process the courseidput request. Not quite sure what this means
3860: # at the system level sense. It appears a gdbm file in the
3861: # /home/httpd/lonUsers/$domain/nohist_courseids is tied and
3862: # a set of entries made in that database.
3863: #
3864: # Parameters:
3865: # $cmd - The command keyword that initiated this request.
3866: # $tail - Tail of the command. In this case consists of a colon
3867: # separated list contaning the domain to apply this to and
3868: # an ampersand separated list of keyword=value pairs.
1.272 raeburn 3869: # Each value is a colon separated list that includes:
3870: # description, institutional code and course owner.
3871: # For backward compatibility with versions included
3872: # in LON-CAPA 1.1.X (and earlier) and 1.2.X, institutional
3873: # code and/or course owner are preserved from the existing
3874: # record when writing a new record in response to 1.1 or
3875: # 1.2 implementations of lonnet::flushcourselogs().
3876: #
1.234 foxr 3877: # $client - Socket open on the client.
3878: # Returns:
3879: # 1 - indicating that processing should continue
3880: #
3881: # Side effects:
3882: # reply is written to the client.
3883: #
3884: sub put_course_id_handler {
3885: my ($cmd, $tail, $client) = @_;
3886:
3887:
3888: my $userinput = "$cmd:$tail";
3889:
1.266 raeburn 3890: my ($udom, $what) = split(/:/, $tail,2);
1.234 foxr 3891: chomp($what);
3892: my $now=time;
3893: my @pairs=split(/\&/,$what);
3894:
3895: my $hashref = &tie_domain_hash($udom, "nohist_courseids", &GDBM_WRCREAT());
3896: if ($hashref) {
3897: foreach my $pair (@pairs) {
1.271 raeburn 3898: my ($key,$courseinfo) = split(/=/,$pair,2);
3899: $courseinfo =~ s/=/:/g;
1.384 raeburn 3900: if (defined($hashref->{$key})) {
3901: my $value = &Apache::lonnet::thaw_unescape($hashref->{$key});
3902: if (ref($value) eq 'HASH') {
3903: my @items = ('description','inst_code','owner','type');
3904: my @new_items = split(/:/,$courseinfo,-1);
3905: my %storehash;
3906: for (my $i=0; $i<@new_items; $i++) {
1.391 raeburn 3907: $storehash{$items[$i]} = &unescape($new_items[$i]);
1.384 raeburn 3908: }
3909: $hashref->{$key} =
3910: &Apache::lonnet::freeze_escape(\%storehash);
3911: my $unesc_key = &unescape($key);
3912: $hashref->{&escape('lasttime:'.$unesc_key)} = $now;
3913: next;
1.383 raeburn 3914: }
1.384 raeburn 3915: }
3916: my @current_items = split(/:/,$hashref->{$key},-1);
3917: shift(@current_items); # remove description
3918: pop(@current_items); # remove last access
3919: my $numcurrent = scalar(@current_items);
3920: if ($numcurrent > 3) {
3921: $numcurrent = 3;
3922: }
3923: my @new_items = split(/:/,$courseinfo,-1);
3924: my $numnew = scalar(@new_items);
3925: if ($numcurrent > 0) {
3926: if ($numnew <= $numcurrent) { # flushcourselogs() from pre 2.2
3927: for (my $j=$numcurrent-$numnew; $j>=0; $j--) {
3928: $courseinfo .= ':'.$current_items[$numcurrent-$j-1];
1.333 raeburn 3929: }
1.272 raeburn 3930: }
3931: }
1.384 raeburn 3932: $hashref->{$key}=$courseinfo.':'.$now;
1.234 foxr 3933: }
1.311 albertel 3934: if (&untie_domain_hash($hashref)) {
1.253 foxr 3935: &Reply( $client, "ok\n", $userinput);
1.234 foxr 3936: } else {
1.253 foxr 3937: &Failure($client, "error: ".($!+0)
1.234 foxr 3938: ." untie(GDBM) Failed ".
3939: "while attempting courseidput\n", $userinput);
3940: }
3941: } else {
1.253 foxr 3942: &Failure($client, "error: ".($!+0)
1.234 foxr 3943: ." tie(GDBM) Failed ".
3944: "while attempting courseidput\n", $userinput);
3945: }
3946:
3947: return 1;
3948: }
3949: ®ister_handler("courseidput", \&put_course_id_handler, 0, 1, 0);
3950:
1.383 raeburn 3951: sub put_course_id_hash_handler {
3952: my ($cmd, $tail, $client) = @_;
3953: my $userinput = "$cmd:$tail";
1.384 raeburn 3954: my ($udom,$mode,$what) = split(/:/, $tail,3);
1.383 raeburn 3955: chomp($what);
3956: my $now=time;
3957: my @pairs=split(/\&/,$what);
1.384 raeburn 3958: my $hashref = &tie_domain_hash($udom, "nohist_courseids", &GDBM_WRCREAT());
1.383 raeburn 3959: if ($hashref) {
3960: foreach my $pair (@pairs) {
3961: my ($key,$value)=split(/=/,$pair);
1.384 raeburn 3962: my $unesc_key = &unescape($key);
3963: if ($mode ne 'timeonly') {
3964: if (!defined($hashref->{&escape('lasttime:'.$unesc_key)})) {
3965: my $curritems = &Apache::lonnet::thaw_unescape($key);
3966: if (ref($curritems) ne 'HASH') {
3967: my @current_items = split(/:/,$hashref->{$key},-1);
3968: my $lasttime = pop(@current_items);
3969: $hashref->{&escape('lasttime:'.$unesc_key)} = $lasttime;
3970: } else {
3971: $hashref->{&escape('lasttime:'.$unesc_key)} = '';
3972: }
3973: }
3974: $hashref->{$key} = $value;
3975: }
3976: if ($mode ne 'notime') {
3977: $hashref->{&escape('lasttime:'.$unesc_key)} = $now;
3978: }
1.383 raeburn 3979: }
3980: if (&untie_domain_hash($hashref)) {
3981: &Reply($client, "ok\n", $userinput);
3982: } else {
3983: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
3984: "while attempting courseidputhash\n", $userinput);
3985: }
3986: } else {
3987: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
3988: "while attempting courseidputhash\n", $userinput);
3989: }
3990: return 1;
3991: }
3992: ®ister_handler("courseidputhash", \&put_course_id_hash_handler, 0, 1, 0);
3993:
1.234 foxr 3994: # Retrieves the value of a course id resource keyword pattern
3995: # defined since a starting date. Both the starting date and the
3996: # keyword pattern are optional. If the starting date is not supplied it
3997: # is treated as the beginning of time. If the pattern is not found,
3998: # it is treatred as "." matching everything.
3999: #
4000: # Parameters:
4001: # $cmd - Command keyword that resulted in us being dispatched.
4002: # $tail - The remainder of the command that, in this case, consists
4003: # of a colon separated list of:
4004: # domain - The domain in which the course database is
4005: # defined.
4006: # since - Optional parameter describing the minimum
4007: # time of definition(?) of the resources that
4008: # will match the dump.
4009: # description - regular expression that is used to filter
4010: # the dump. Only keywords matching this regexp
4011: # will be used.
1.272 raeburn 4012: # institutional code - optional supplied code to filter
4013: # the dump. Only courses with an institutional code
4014: # that match the supplied code will be returned.
1.336 raeburn 4015: # owner - optional supplied username and domain of owner to
4016: # filter the dump. Only courses for which the course
4017: # owner matches the supplied username and/or domain
4018: # will be returned. Pre-2.2.0 legacy entries from
4019: # nohist_courseiddump will only contain usernames.
1.384 raeburn 4020: # type - optional parameter for selection
1.418 raeburn 4021: # regexp_ok - if 1 or -1 allow the supplied institutional code
4022: # filter to behave as a regular expression:
4023: # 1 will not exclude the course if the instcode matches the RE
4024: # -1 will exclude the course if the instcode matches the RE
1.384 raeburn 4025: # rtn_as_hash - whether to return the information available for
4026: # each matched item as a frozen hash of all
4027: # key, value pairs in the item's hash, or as a
4028: # colon-separated list of (in order) description,
4029: # institutional code, and course owner.
1.404 raeburn 4030: # selfenrollonly - filter by courses allowing self-enrollment
4031: # now or in the future (selfenrollonly = 1).
4032: # catfilter - filter by course category, assigned to a course
4033: # using manually defined categories (i.e., not
1.407 raeburn 4034: # self-cataloging based on on institutional code).
1.404 raeburn 4035: # showhidden - include course in results even if course
1.407 raeburn 4036: # was set to be excluded from course catalog (DC only).
1.404 raeburn 4037: # caller - if set to 'coursecatalog', courses set to be hidden
4038: # from course catalog will be excluded from results (unless
4039: # overridden by "showhidden".
1.427 raeburn 4040: # cloner - escaped username:domain of course cloner (if picking course to
1.419 raeburn 4041: # clone).
4042: # cc_clone_list - escaped comma separated list of courses for which
4043: # course cloner has active CC role (and so can clone
4044: # automatically).
1.427 raeburn 4045: # cloneonly - filter by courses for which cloner has rights to clone.
4046: # createdbefore - include courses for which creation date preceeded this date.
4047: # createdafter - include courses for which creation date followed this date.
4048: # creationcontext - include courses created in specified context
1.404 raeburn 4049: #
1.445 raeburn 4050: # domcloner - flag to indicate if user can create CCs in course's domain.
1.489.2.11 raeburn 4051: # If so, ability to clone course is automatic.
4052: # hasuniquecode - filter by courses for which a six character unique code has
4053: # been set.
1.445 raeburn 4054: #
1.234 foxr 4055: # $client - The socket open on the client.
4056: # Returns:
4057: # 1 - Continue processing.
4058: # Side Effects:
4059: # a reply is written to $client.
4060: sub dump_course_id_handler {
4061: my ($cmd, $tail, $client) = @_;
4062: my $userinput = "$cmd:$tail";
4063:
1.333 raeburn 4064: my ($udom,$since,$description,$instcodefilter,$ownerfilter,$coursefilter,
1.404 raeburn 4065: $typefilter,$regexp_ok,$rtn_as_hash,$selfenrollonly,$catfilter,$showhidden,
1.427 raeburn 4066: $caller,$cloner,$cc_clone_list,$cloneonly,$createdbefore,$createdafter,
1.489.2.11 raeburn 4067: $creationcontext,$domcloner,$hasuniquecode) =split(/:/,$tail);
1.397 raeburn 4068: my $now = time;
1.419 raeburn 4069: my ($cloneruname,$clonerudom,%cc_clone);
1.234 foxr 4070: if (defined($description)) {
4071: $description=&unescape($description);
4072: } else {
4073: $description='.';
4074: }
1.266 raeburn 4075: if (defined($instcodefilter)) {
4076: $instcodefilter=&unescape($instcodefilter);
4077: } else {
4078: $instcodefilter='.';
4079: }
1.336 raeburn 4080: my ($ownerunamefilter,$ownerdomfilter);
1.266 raeburn 4081: if (defined($ownerfilter)) {
4082: $ownerfilter=&unescape($ownerfilter);
1.336 raeburn 4083: if ($ownerfilter ne '.' && defined($ownerfilter)) {
4084: if ($ownerfilter =~ /^([^:]*):([^:]*)$/) {
4085: $ownerunamefilter = $1;
4086: $ownerdomfilter = $2;
4087: } else {
4088: $ownerunamefilter = $ownerfilter;
4089: $ownerdomfilter = '';
4090: }
4091: }
1.266 raeburn 4092: } else {
4093: $ownerfilter='.';
4094: }
1.336 raeburn 4095:
1.282 raeburn 4096: if (defined($coursefilter)) {
4097: $coursefilter=&unescape($coursefilter);
4098: } else {
4099: $coursefilter='.';
4100: }
1.333 raeburn 4101: if (defined($typefilter)) {
4102: $typefilter=&unescape($typefilter);
4103: } else {
4104: $typefilter='.';
4105: }
1.344 raeburn 4106: if (defined($regexp_ok)) {
4107: $regexp_ok=&unescape($regexp_ok);
4108: }
1.401 raeburn 4109: if (defined($catfilter)) {
4110: $catfilter=&unescape($catfilter);
4111: }
1.419 raeburn 4112: if (defined($cloner)) {
4113: $cloner = &unescape($cloner);
4114: ($cloneruname,$clonerudom) = ($cloner =~ /^($LONCAPA::match_username):($LONCAPA::match_domain)$/);
4115: }
4116: if (defined($cc_clone_list)) {
4117: $cc_clone_list = &unescape($cc_clone_list);
4118: my @cc_cloners = split('&',$cc_clone_list);
4119: foreach my $cid (@cc_cloners) {
4120: my ($clonedom,$clonenum) = split(':',$cid);
4121: next if ($clonedom ne $udom);
4122: $cc_clone{$clonedom.'_'.$clonenum} = 1;
4123: }
4124: }
1.431 raeburn 4125: if ($createdbefore ne '') {
1.427 raeburn 4126: $createdbefore = &unescape($createdbefore);
4127: } else {
4128: $createdbefore = 0;
4129: }
1.431 raeburn 4130: if ($createdafter ne '') {
1.427 raeburn 4131: $createdafter = &unescape($createdafter);
4132: } else {
4133: $createdafter = 0;
4134: }
1.431 raeburn 4135: if ($creationcontext ne '') {
1.427 raeburn 4136: $creationcontext = &unescape($creationcontext);
4137: } else {
4138: $creationcontext = '.';
4139: }
1.489.2.11 raeburn 4140: unless ($hasuniquecode) {
4141: $hasuniquecode = '.';
4142: }
1.384 raeburn 4143: my $unpack = 1;
1.485 raeburn 4144: if ($description eq '.' && $instcodefilter eq '.' && $ownerfilter eq '.' &&
1.384 raeburn 4145: $typefilter eq '.') {
4146: $unpack = 0;
4147: }
4148: if (!defined($since)) { $since=0; }
1.234 foxr 4149: my $qresult='';
4150: my $hashref = &tie_domain_hash($udom, "nohist_courseids", &GDBM_WRCREAT());
4151: if ($hashref) {
1.384 raeburn 4152: while (my ($key,$value) = each(%$hashref)) {
1.397 raeburn 4153: my ($unesc_key,$lasttime_key,$lasttime,$is_hash,%val,
1.427 raeburn 4154: %unesc_val,$selfenroll_end,$selfenroll_types,$created,
4155: $context);
1.384 raeburn 4156: $unesc_key = &unescape($key);
4157: if ($unesc_key =~ /^lasttime:/) {
4158: next;
4159: } else {
4160: $lasttime_key = &escape('lasttime:'.$unesc_key);
4161: }
4162: if ($hashref->{$lasttime_key} ne '') {
4163: $lasttime = $hashref->{$lasttime_key};
4164: next if ($lasttime<$since);
4165: }
1.419 raeburn 4166: my ($canclone,$valchange);
1.384 raeburn 4167: my $items = &Apache::lonnet::thaw_unescape($value);
4168: if (ref($items) eq 'HASH') {
1.429 raeburn 4169: if ($hashref->{$lasttime_key} eq '') {
1.430 raeburn 4170: next if ($since > 1);
1.429 raeburn 4171: }
1.384 raeburn 4172: $is_hash = 1;
1.445 raeburn 4173: if ($domcloner) {
4174: $canclone = 1;
4175: } elsif (defined($clonerudom)) {
1.419 raeburn 4176: if ($items->{'cloners'}) {
4177: my @cloneable = split(',',$items->{'cloners'});
4178: if (@cloneable) {
4179: if (grep(/^\*$/,@cloneable)) {
4180: $canclone = 1;
4181: } elsif (grep(/^\*:\Q$clonerudom\E$/,@cloneable)) {
4182: $canclone = 1;
4183: } elsif (grep(/^\Q$cloneruname\E:\Q$clonerudom\E$/,@cloneable)) {
4184: $canclone = 1;
4185: }
4186: }
4187: unless ($canclone) {
4188: if ($cloneruname ne '' && $clonerudom ne '') {
4189: if ($cc_clone{$unesc_key}) {
4190: $canclone = 1;
4191: $items->{'cloners'} .= ','.$cloneruname.':'.
4192: $clonerudom;
4193: $valchange = 1;
4194: }
4195: }
4196: }
4197: } elsif (defined($cloneruname)) {
4198: if ($cc_clone{$unesc_key}) {
4199: $canclone = 1;
4200: $items->{'cloners'} = $cloneruname.':'.$clonerudom;
4201: $valchange = 1;
4202: }
1.437 raeburn 4203: unless ($canclone) {
4204: if ($items->{'owner'} =~ /:/) {
4205: if ($items->{'owner'} eq $cloner) {
4206: $canclone = 1;
4207: }
1.444 raeburn 4208: } elsif ($cloner eq $items->{'owner'}.':'.$udom) {
1.437 raeburn 4209: $canclone = 1;
4210: }
4211: if ($canclone) {
4212: $items->{'cloners'} = $cloneruname.':'.$clonerudom;
4213: $valchange = 1;
4214: }
4215: }
1.419 raeburn 4216: }
4217: }
1.384 raeburn 4218: if ($unpack || !$rtn_as_hash) {
4219: $unesc_val{'descr'} = $items->{'description'};
4220: $unesc_val{'inst_code'} = $items->{'inst_code'};
4221: $unesc_val{'owner'} = $items->{'owner'};
4222: $unesc_val{'type'} = $items->{'type'};
1.419 raeburn 4223: $unesc_val{'cloners'} = $items->{'cloners'};
1.427 raeburn 4224: $unesc_val{'created'} = $items->{'created'};
4225: $unesc_val{'context'} = $items->{'context'};
1.404 raeburn 4226: }
4227: $selfenroll_types = $items->{'selfenroll_types'};
4228: $selfenroll_end = $items->{'selfenroll_end_date'};
1.427 raeburn 4229: $created = $items->{'created'};
4230: $context = $items->{'context'};
1.489.2.11 raeburn 4231: if ($hasuniquecode ne '.') {
4232: next unless ($items->{'uniquecode'});
4233: }
1.404 raeburn 4234: if ($selfenrollonly) {
4235: next if (!$selfenroll_types);
4236: if (($selfenroll_end > 0) && ($selfenroll_end <= $now)) {
4237: next;
1.397 raeburn 4238: }
1.404 raeburn 4239: }
1.427 raeburn 4240: if ($creationcontext ne '.') {
4241: next if (($context ne '') && ($context ne $creationcontext));
4242: }
4243: if ($createdbefore > 0) {
4244: next if (($created eq '') || ($created > $createdbefore));
4245: }
4246: if ($createdafter > 0) {
4247: next if (($created eq '') || ($created <= $createdafter));
4248: }
1.404 raeburn 4249: if ($catfilter ne '') {
1.406 raeburn 4250: next if ($items->{'categories'} eq '');
4251: my @categories = split('&',$items->{'categories'});
1.407 raeburn 4252: next if (@categories == 0);
4253: my @subcats = split('&',$catfilter);
4254: my $matchcat = 0;
4255: foreach my $cat (@categories) {
4256: if (grep(/^\Q$cat\E$/,@subcats)) {
4257: $matchcat = 1;
4258: last;
4259: }
4260: }
4261: next if (!$matchcat);
1.404 raeburn 4262: }
4263: if ($caller eq 'coursecatalog') {
1.405 raeburn 4264: if ($items->{'hidefromcat'} eq 'yes') {
4265: next if !$showhidden;
1.401 raeburn 4266: }
1.384 raeburn 4267: }
1.383 raeburn 4268: } else {
1.401 raeburn 4269: next if ($catfilter ne '');
1.419 raeburn 4270: next if ($selfenrollonly);
1.427 raeburn 4271: next if ($createdbefore || $createdafter);
4272: next if ($creationcontext ne '.');
1.419 raeburn 4273: if ((defined($clonerudom)) && (defined($cloneruname))) {
4274: if ($cc_clone{$unesc_key}) {
4275: $canclone = 1;
4276: $val{'cloners'} = &escape($cloneruname.':'.$clonerudom);
4277: }
4278: }
1.384 raeburn 4279: $is_hash = 0;
1.388 raeburn 4280: my @courseitems = split(/:/,$value);
1.403 raeburn 4281: $lasttime = pop(@courseitems);
1.402 raeburn 4282: if ($hashref->{$lasttime_key} eq '') {
4283: next if ($lasttime<$since);
4284: }
1.384 raeburn 4285: ($val{'descr'},$val{'inst_code'},$val{'owner'},$val{'type'}) = @courseitems;
1.383 raeburn 4286: }
1.419 raeburn 4287: if ($cloneonly) {
4288: next unless ($canclone);
4289: }
1.266 raeburn 4290: my $match = 1;
1.384 raeburn 4291: if ($description ne '.') {
4292: if (!$is_hash) {
4293: $unesc_val{'descr'} = &unescape($val{'descr'});
4294: }
4295: if (eval{$unesc_val{'descr'} !~ /\Q$description\E/i}) {
1.266 raeburn 4296: $match = 0;
1.384 raeburn 4297: }
1.266 raeburn 4298: }
1.384 raeburn 4299: if ($instcodefilter ne '.') {
4300: if (!$is_hash) {
4301: $unesc_val{'inst_code'} = &unescape($val{'inst_code'});
4302: }
1.418 raeburn 4303: if ($regexp_ok == 1) {
1.384 raeburn 4304: if (eval{$unesc_val{'inst_code'} !~ /$instcodefilter/}) {
1.344 raeburn 4305: $match = 0;
4306: }
1.418 raeburn 4307: } elsif ($regexp_ok == -1) {
4308: if (eval{$unesc_val{'inst_code'} =~ /$instcodefilter/}) {
4309: $match = 0;
4310: }
1.344 raeburn 4311: } else {
1.384 raeburn 4312: if (eval{$unesc_val{'inst_code'} !~ /\Q$instcodefilter\E/i}) {
1.344 raeburn 4313: $match = 0;
4314: }
1.266 raeburn 4315: }
1.234 foxr 4316: }
1.384 raeburn 4317: if ($ownerfilter ne '.') {
4318: if (!$is_hash) {
4319: $unesc_val{'owner'} = &unescape($val{'owner'});
4320: }
1.336 raeburn 4321: if (($ownerunamefilter ne '') && ($ownerdomfilter ne '')) {
1.384 raeburn 4322: if ($unesc_val{'owner'} =~ /:/) {
4323: if (eval{$unesc_val{'owner'} !~
4324: /\Q$ownerunamefilter\E:\Q$ownerdomfilter\E$/i}) {
1.336 raeburn 4325: $match = 0;
4326: }
4327: } else {
1.384 raeburn 4328: if (eval{$unesc_val{'owner'} !~ /\Q$ownerunamefilter\E/i}) {
1.336 raeburn 4329: $match = 0;
4330: }
4331: }
4332: } elsif ($ownerunamefilter ne '') {
1.384 raeburn 4333: if ($unesc_val{'owner'} =~ /:/) {
4334: if (eval{$unesc_val{'owner'} !~ /\Q$ownerunamefilter\E:[^:]+$/i}) {
1.336 raeburn 4335: $match = 0;
4336: }
4337: } else {
1.384 raeburn 4338: if (eval{$unesc_val{'owner'} !~ /\Q$ownerunamefilter\E/i}) {
1.336 raeburn 4339: $match = 0;
4340: }
4341: }
4342: } elsif ($ownerdomfilter ne '') {
1.384 raeburn 4343: if ($unesc_val{'owner'} =~ /:/) {
4344: if (eval{$unesc_val{'owner'} !~ /^[^:]+:\Q$ownerdomfilter\E/}) {
1.336 raeburn 4345: $match = 0;
4346: }
4347: } else {
4348: if ($ownerdomfilter ne $udom) {
4349: $match = 0;
4350: }
4351: }
1.266 raeburn 4352: }
4353: }
1.384 raeburn 4354: if ($coursefilter ne '.') {
4355: if (eval{$unesc_key !~ /^$udom(_)\Q$coursefilter\E$/}) {
1.282 raeburn 4356: $match = 0;
4357: }
4358: }
1.384 raeburn 4359: if ($typefilter ne '.') {
4360: if (!$is_hash) {
4361: $unesc_val{'type'} = &unescape($val{'type'});
4362: }
4363: if ($unesc_val{'type'} eq '') {
1.333 raeburn 4364: if ($typefilter ne 'Course') {
4365: $match = 0;
4366: }
1.383 raeburn 4367: } else {
1.384 raeburn 4368: if (eval{$unesc_val{'type'} !~ /^\Q$typefilter\E$/}) {
1.333 raeburn 4369: $match = 0;
4370: }
4371: }
4372: }
1.266 raeburn 4373: if ($match == 1) {
1.384 raeburn 4374: if ($rtn_as_hash) {
4375: if ($is_hash) {
1.419 raeburn 4376: if ($valchange) {
4377: my $newvalue = &Apache::lonnet::freeze_escape($items);
4378: $qresult.=$key.'='.$newvalue.'&';
4379: } else {
4380: $qresult.=$key.'='.$value.'&';
4381: }
1.384 raeburn 4382: } else {
1.388 raeburn 4383: my %rtnhash = ( 'description' => &unescape($val{'descr'}),
4384: 'inst_code' => &unescape($val{'inst_code'}),
4385: 'owner' => &unescape($val{'owner'}),
4386: 'type' => &unescape($val{'type'}),
1.419 raeburn 4387: 'cloners' => &unescape($val{'cloners'}),
1.384 raeburn 4388: );
4389: my $items = &Apache::lonnet::freeze_escape(\%rtnhash);
4390: $qresult.=$key.'='.$items.'&';
4391: }
1.383 raeburn 4392: } else {
1.384 raeburn 4393: if ($is_hash) {
4394: $qresult .= $key.'='.&escape($unesc_val{'descr'}).':'.
4395: &escape($unesc_val{'inst_code'}).':'.
4396: &escape($unesc_val{'owner'}).'&';
4397: } else {
4398: $qresult .= $key.'='.$val{'descr'}.':'.$val{'inst_code'}.
4399: ':'.$val{'owner'}.'&';
4400: }
1.383 raeburn 4401: }
1.266 raeburn 4402: }
1.234 foxr 4403: }
1.311 albertel 4404: if (&untie_domain_hash($hashref)) {
1.234 foxr 4405: chop($qresult);
1.387 albertel 4406: &Reply($client, \$qresult, $userinput);
1.234 foxr 4407: } else {
4408: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4409: "while attempting courseiddump\n", $userinput);
4410: }
4411: } else {
4412: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
4413: "while attempting courseiddump\n", $userinput);
4414: }
4415: return 1;
4416: }
4417: ®ister_handler("courseiddump", \&dump_course_id_handler, 0, 1, 0);
1.238 foxr 4418:
1.438 raeburn 4419: sub course_lastaccess_handler {
4420: my ($cmd, $tail, $client) = @_;
4421: my $userinput = "$cmd:$tail";
4422: my ($cdom,$cnum) = split(':',$tail);
4423: my (%lastaccess,$qresult);
4424: my $hashref = &tie_domain_hash($cdom, "nohist_courseids", &GDBM_WRCREAT());
4425: if ($hashref) {
4426: while (my ($key,$value) = each(%$hashref)) {
4427: my ($unesc_key,$lasttime);
4428: $unesc_key = &unescape($key);
4429: if ($cnum) {
4430: next unless ($unesc_key =~ /\Q$cdom\E_\Q$cnum\E$/);
4431: }
4432: if ($unesc_key =~ /^lasttime:($LONCAPA::match_domain\_$LONCAPA::match_courseid)/) {
4433: $lastaccess{$1} = $value;
4434: } else {
4435: my $items = &Apache::lonnet::thaw_unescape($value);
4436: if (ref($items) eq 'HASH') {
4437: unless ($lastaccess{$unesc_key}) {
4438: $lastaccess{$unesc_key} = '';
4439: }
4440: } else {
4441: my @courseitems = split(':',$value);
4442: $lastaccess{$unesc_key} = pop(@courseitems);
4443: }
4444: }
4445: }
4446: foreach my $cid (sort(keys(%lastaccess))) {
4447: $qresult.=&escape($cid).'='.$lastaccess{$cid}.'&';
4448: }
4449: if (&untie_domain_hash($hashref)) {
4450: if ($qresult) {
4451: chop($qresult);
4452: }
4453: &Reply($client, \$qresult, $userinput);
4454: } else {
4455: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4456: "while attempting lastacourseaccess\n", $userinput);
4457: }
4458: } else {
4459: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
4460: "while attempting lastcourseaccess\n", $userinput);
4461: }
4462: return 1;
4463: }
4464: ®ister_handler("courselastaccess",\&course_lastaccess_handler, 0, 1, 0);
4465:
1.238 foxr 4466: #
1.348 raeburn 4467: # Puts an unencrypted entry in a namespace db file at the domain level
4468: #
4469: # Parameters:
4470: # $cmd - The command that got us here.
4471: # $tail - Tail of the command (remaining parameters).
4472: # $client - File descriptor connected to client.
4473: # Returns
4474: # 0 - Requested to exit, caller should shut down.
4475: # 1 - Continue processing.
4476: # Side effects:
4477: # reply is written to $client.
4478: #
4479: sub put_domain_handler {
4480: my ($cmd,$tail,$client) = @_;
4481:
4482: my $userinput = "$cmd:$tail";
4483:
4484: my ($udom,$namespace,$what) =split(/:/,$tail,3);
4485: chomp($what);
4486: my @pairs=split(/\&/,$what);
4487: my $hashref = &tie_domain_hash($udom, "$namespace", &GDBM_WRCREAT(),
4488: "P", $what);
4489: if ($hashref) {
4490: foreach my $pair (@pairs) {
4491: my ($key,$value)=split(/=/,$pair);
4492: $hashref->{$key}=$value;
4493: }
4494: if (&untie_domain_hash($hashref)) {
4495: &Reply($client, "ok\n", $userinput);
4496: } else {
4497: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4498: "while attempting putdom\n", $userinput);
4499: }
4500: } else {
4501: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
4502: "while attempting putdom\n", $userinput);
4503: }
4504:
4505: return 1;
4506: }
4507: ®ister_handler("putdom", \&put_domain_handler, 0, 1, 0);
4508:
4509: # Unencrypted get from the namespace database file at the domain level.
4510: # This function retrieves a keyed item from a specific named database in the
4511: # domain directory.
4512: #
4513: # Parameters:
4514: # $cmd - Command request keyword (get).
4515: # $tail - Tail of the command. This is a colon separated list
4516: # consisting of the domain and the 'namespace'
4517: # which selects the gdbm file to do the lookup in,
4518: # & separated list of keys to lookup. Note that
4519: # the values are returned as an & separated list too.
4520: # $client - File descriptor open on the client.
4521: # Returns:
4522: # 1 - Continue processing.
4523: # 0 - Exit.
4524: # Side effects:
4525: # reply is written to $client.
4526: #
4527:
4528: sub get_domain_handler {
4529: my ($cmd, $tail, $client) = @_;
4530:
1.461 foxr 4531:
1.348 raeburn 4532: my $userinput = "$client:$tail";
4533:
4534: my ($udom,$namespace,$what)=split(/:/,$tail,3);
4535: chomp($what);
4536: my @queries=split(/\&/,$what);
4537: my $qresult='';
4538: my $hashref = &tie_domain_hash($udom, "$namespace", &GDBM_READER());
4539: if ($hashref) {
4540: for (my $i=0;$i<=$#queries;$i++) {
4541: $qresult.="$hashref->{$queries[$i]}&";
4542: }
4543: if (&untie_domain_hash($hashref)) {
4544: $qresult=~s/\&$//;
1.387 albertel 4545: &Reply($client, \$qresult, $userinput);
1.348 raeburn 4546: } else {
4547: &Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ".
4548: "while attempting getdom\n",$userinput);
4549: }
4550: } else {
4551: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
4552: "while attempting getdom\n",$userinput);
4553: }
4554:
4555: return 1;
4556: }
1.360 raeburn 4557: ®ister_handler("getdom", \&get_domain_handler, 0, 1, 0);
1.348 raeburn 4558:
1.420 raeburn 4559: #
1.238 foxr 4560: # Puts an id to a domains id database.
4561: #
4562: # Parameters:
4563: # $cmd - The command that triggered us.
4564: # $tail - Remainder of the request other than the command. This is a
4565: # colon separated list containing:
4566: # $domain - The domain for which we are writing the id.
4567: # $pairs - The id info to write... this is and & separated list
4568: # of keyword=value.
4569: # $client - Socket open on the client.
4570: # Returns:
4571: # 1 - Continue processing.
4572: # Side effects:
4573: # reply is written to $client.
4574: #
4575: sub put_id_handler {
4576: my ($cmd,$tail,$client) = @_;
4577:
4578:
4579: my $userinput = "$cmd:$tail";
4580:
4581: my ($udom,$what)=split(/:/,$tail);
4582: chomp($what);
4583: my @pairs=split(/\&/,$what);
4584: my $hashref = &tie_domain_hash($udom, "ids", &GDBM_WRCREAT(),
4585: "P", $what);
4586: if ($hashref) {
4587: foreach my $pair (@pairs) {
4588: my ($key,$value)=split(/=/,$pair);
4589: $hashref->{$key}=$value;
4590: }
1.311 albertel 4591: if (&untie_domain_hash($hashref)) {
1.238 foxr 4592: &Reply($client, "ok\n", $userinput);
4593: } else {
4594: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4595: "while attempting idput\n", $userinput);
4596: }
4597: } else {
4598: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
4599: "while attempting idput\n", $userinput);
4600: }
4601:
4602: return 1;
4603: }
1.263 albertel 4604: ®ister_handler("idput", \&put_id_handler, 0, 1, 0);
1.238 foxr 4605:
4606: #
4607: # Retrieves a set of id values from the id database.
4608: # Returns an & separated list of results, one for each requested id to the
4609: # client.
4610: #
4611: # Parameters:
4612: # $cmd - Command keyword that caused us to be dispatched.
4613: # $tail - Tail of the command. Consists of a colon separated:
4614: # domain - the domain whose id table we dump
4615: # ids Consists of an & separated list of
4616: # id keywords whose values will be fetched.
4617: # nonexisting keywords will have an empty value.
4618: # $client - Socket open on the client.
4619: #
4620: # Returns:
4621: # 1 - indicating processing should continue.
4622: # Side effects:
4623: # An & separated list of results is written to $client.
4624: #
4625: sub get_id_handler {
4626: my ($cmd, $tail, $client) = @_;
4627:
4628:
4629: my $userinput = "$client:$tail";
4630:
4631: my ($udom,$what)=split(/:/,$tail);
4632: chomp($what);
4633: my @queries=split(/\&/,$what);
4634: my $qresult='';
4635: my $hashref = &tie_domain_hash($udom, "ids", &GDBM_READER());
4636: if ($hashref) {
4637: for (my $i=0;$i<=$#queries;$i++) {
4638: $qresult.="$hashref->{$queries[$i]}&";
4639: }
1.311 albertel 4640: if (&untie_domain_hash($hashref)) {
1.238 foxr 4641: $qresult=~s/\&$//;
1.387 albertel 4642: &Reply($client, \$qresult, $userinput);
1.238 foxr 4643: } else {
4644: &Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ".
4645: "while attempting idget\n",$userinput);
4646: }
4647: } else {
4648: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
4649: "while attempting idget\n",$userinput);
4650: }
4651:
4652: return 1;
4653: }
1.263 albertel 4654: ®ister_handler("idget", \&get_id_handler, 0, 1, 0);
1.238 foxr 4655:
1.489.2.7 raeburn 4656: # Deletes one or more ids in a domain's id database.
1.489.2.6 raeburn 4657: #
4658: # Parameters:
4659: # $cmd - Command keyword (iddel).
4660: # $tail - Command tail. In this case a colon
4661: # separated list containing:
4662: # The domain for which we are deleting the id(s).
4663: # &-separated list of id(s) to delete.
4664: # $client - File open on client socket.
4665: # Returns:
4666: # 1 - Continue processing
4667: # 0 - Exit server.
4668: #
4669: #
4670:
4671: sub del_id_handler {
4672: my ($cmd,$tail,$client) = @_;
4673:
4674: my $userinput = "$cmd:$tail";
4675:
4676: my ($udom,$what)=split(/:/,$tail);
4677: chomp($what);
4678: my $hashref = &tie_domain_hash($udom, "ids", &GDBM_WRCREAT(),
4679: "D", $what);
4680: if ($hashref) {
4681: my @keys=split(/\&/,$what);
4682: foreach my $key (@keys) {
4683: delete($hashref->{$key});
4684: }
4685: if (&untie_user_hash($hashref)) {
4686: &Reply($client, "ok\n", $userinput);
4687: } else {
4688: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4689: "while attempting iddel\n", $userinput);
4690: }
4691: } else {
4692: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
4693: "while attempting iddel\n", $userinput);
4694: }
4695: return 1;
4696: }
4697: ®ister_handler("iddel", \&del_id_handler, 0, 1, 0);
4698:
1.238 foxr 4699: #
1.299 raeburn 4700: # Puts broadcast e-mail sent by Domain Coordinator in nohist_dcmail database
4701: #
4702: # Parameters
4703: # $cmd - Command keyword that caused us to be dispatched.
4704: # $tail - Tail of the command. Consists of a colon separated:
4705: # domain - the domain whose dcmail we are recording
4706: # email Consists of key=value pair
4707: # where key is unique msgid
4708: # and value is message (in XML)
4709: # $client - Socket open on the client.
4710: #
4711: # Returns:
4712: # 1 - indicating processing should continue.
4713: # Side effects
4714: # reply is written to $client.
4715: #
4716: sub put_dcmail_handler {
4717: my ($cmd,$tail,$client) = @_;
4718: my $userinput = "$cmd:$tail";
1.463 foxr 4719:
4720:
1.299 raeburn 4721: my ($udom,$what)=split(/:/,$tail);
4722: chomp($what);
4723: my $hashref = &tie_domain_hash($udom, "nohist_dcmail", &GDBM_WRCREAT());
4724: if ($hashref) {
4725: my ($key,$value)=split(/=/,$what);
4726: $hashref->{$key}=$value;
4727: }
1.311 albertel 4728: if (&untie_domain_hash($hashref)) {
1.299 raeburn 4729: &Reply($client, "ok\n", $userinput);
4730: } else {
4731: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4732: "while attempting dcmailput\n", $userinput);
4733: }
4734: return 1;
4735: }
4736: ®ister_handler("dcmailput", \&put_dcmail_handler, 0, 1, 0);
4737:
4738: #
4739: # Retrieves broadcast e-mail from nohist_dcmail database
4740: # Returns to client an & separated list of key=value pairs,
4741: # where key is msgid and value is message information.
4742: #
4743: # Parameters
4744: # $cmd - Command keyword that caused us to be dispatched.
4745: # $tail - Tail of the command. Consists of a colon separated:
4746: # domain - the domain whose dcmail table we dump
4747: # startfilter - beginning of time window
4748: # endfilter - end of time window
4749: # sendersfilter - & separated list of username:domain
4750: # for senders to search for.
4751: # $client - Socket open on the client.
4752: #
4753: # Returns:
4754: # 1 - indicating processing should continue.
4755: # Side effects
4756: # reply (& separated list of msgid=messageinfo pairs) is
4757: # written to $client.
4758: #
4759: sub dump_dcmail_handler {
4760: my ($cmd, $tail, $client) = @_;
4761:
4762: my $userinput = "$cmd:$tail";
4763: my ($udom,$startfilter,$endfilter,$sendersfilter) = split(/:/,$tail);
4764: chomp($sendersfilter);
4765: my @senders = ();
4766: if (defined($startfilter)) {
4767: $startfilter=&unescape($startfilter);
4768: } else {
4769: $startfilter='.';
4770: }
4771: if (defined($endfilter)) {
4772: $endfilter=&unescape($endfilter);
4773: } else {
4774: $endfilter='.';
4775: }
4776: if (defined($sendersfilter)) {
4777: $sendersfilter=&unescape($sendersfilter);
1.300 albertel 4778: @senders = map { &unescape($_) } split(/\&/,$sendersfilter);
1.299 raeburn 4779: }
4780:
4781: my $qresult='';
4782: my $hashref = &tie_domain_hash($udom, "nohist_dcmail", &GDBM_WRCREAT());
4783: if ($hashref) {
4784: while (my ($key,$value) = each(%$hashref)) {
4785: my $match = 1;
1.303 albertel 4786: my ($timestamp,$subj,$uname,$udom) =
4787: split(/:/,&unescape(&unescape($key)),5); # yes, twice really
1.299 raeburn 4788: $subj = &unescape($subj);
4789: unless ($startfilter eq '.' || !defined($startfilter)) {
4790: if ($timestamp < $startfilter) {
4791: $match = 0;
4792: }
4793: }
4794: unless ($endfilter eq '.' || !defined($endfilter)) {
4795: if ($timestamp > $endfilter) {
4796: $match = 0;
4797: }
4798: }
4799: unless (@senders < 1) {
4800: unless (grep/^$uname:$udom$/,@senders) {
4801: $match = 0;
4802: }
4803: }
4804: if ($match == 1) {
4805: $qresult.=$key.'='.$value.'&';
4806: }
4807: }
1.311 albertel 4808: if (&untie_domain_hash($hashref)) {
1.299 raeburn 4809: chop($qresult);
1.387 albertel 4810: &Reply($client, \$qresult, $userinput);
1.299 raeburn 4811: } else {
4812: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4813: "while attempting dcmaildump\n", $userinput);
4814: }
4815: } else {
4816: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
4817: "while attempting dcmaildump\n", $userinput);
4818: }
4819: return 1;
4820: }
4821:
4822: ®ister_handler("dcmaildump", \&dump_dcmail_handler, 0, 1, 0);
4823:
4824: #
4825: # Puts domain roles in nohist_domainroles database
4826: #
4827: # Parameters
4828: # $cmd - Command keyword that caused us to be dispatched.
4829: # $tail - Tail of the command. Consists of a colon separated:
4830: # domain - the domain whose roles we are recording
4831: # role - Consists of key=value pair
4832: # where key is unique role
4833: # and value is start/end date information
4834: # $client - Socket open on the client.
4835: #
4836: # Returns:
4837: # 1 - indicating processing should continue.
4838: # Side effects
4839: # reply is written to $client.
4840: #
4841:
4842: sub put_domainroles_handler {
4843: my ($cmd,$tail,$client) = @_;
4844:
4845: my $userinput = "$cmd:$tail";
4846: my ($udom,$what)=split(/:/,$tail);
4847: chomp($what);
4848: my @pairs=split(/\&/,$what);
4849: my $hashref = &tie_domain_hash($udom, "nohist_domainroles", &GDBM_WRCREAT());
4850: if ($hashref) {
4851: foreach my $pair (@pairs) {
4852: my ($key,$value)=split(/=/,$pair);
4853: $hashref->{$key}=$value;
4854: }
1.311 albertel 4855: if (&untie_domain_hash($hashref)) {
1.299 raeburn 4856: &Reply($client, "ok\n", $userinput);
4857: } else {
4858: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4859: "while attempting domroleput\n", $userinput);
4860: }
4861: } else {
4862: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
4863: "while attempting domroleput\n", $userinput);
4864: }
4865:
4866: return 1;
4867: }
4868:
4869: ®ister_handler("domroleput", \&put_domainroles_handler, 0, 1, 0);
4870:
4871: #
4872: # Retrieves domain roles from nohist_domainroles database
4873: # Returns to client an & separated list of key=value pairs,
4874: # where key is role and value is start and end date information.
4875: #
4876: # Parameters
4877: # $cmd - Command keyword that caused us to be dispatched.
4878: # $tail - Tail of the command. Consists of a colon separated:
4879: # domain - the domain whose domain roles table we dump
4880: # $client - Socket open on the client.
4881: #
4882: # Returns:
4883: # 1 - indicating processing should continue.
4884: # Side effects
4885: # reply (& separated list of role=start/end info pairs) is
4886: # written to $client.
4887: #
4888: sub dump_domainroles_handler {
4889: my ($cmd, $tail, $client) = @_;
4890:
4891: my $userinput = "$cmd:$tail";
4892: my ($udom,$startfilter,$endfilter,$rolesfilter) = split(/:/,$tail);
4893: chomp($rolesfilter);
4894: my @roles = ();
4895: if (defined($startfilter)) {
4896: $startfilter=&unescape($startfilter);
4897: } else {
4898: $startfilter='.';
4899: }
4900: if (defined($endfilter)) {
4901: $endfilter=&unescape($endfilter);
4902: } else {
4903: $endfilter='.';
4904: }
4905: if (defined($rolesfilter)) {
4906: $rolesfilter=&unescape($rolesfilter);
1.300 albertel 4907: @roles = split(/\&/,$rolesfilter);
1.299 raeburn 4908: }
1.421 raeburn 4909:
1.299 raeburn 4910: my $hashref = &tie_domain_hash($udom, "nohist_domainroles", &GDBM_WRCREAT());
4911: if ($hashref) {
4912: my $qresult = '';
4913: while (my ($key,$value) = each(%$hashref)) {
4914: my $match = 1;
1.421 raeburn 4915: my ($end,$start) = split(/:/,&unescape($value));
1.299 raeburn 4916: my ($trole,$uname,$udom,$runame,$rudom,$rsec) = split(/:/,&unescape($key));
1.421 raeburn 4917: unless (@roles < 1) {
4918: unless (grep/^\Q$trole\E$/,@roles) {
4919: $match = 0;
4920: next;
4921: }
4922: }
1.299 raeburn 4923: unless ($startfilter eq '.' || !defined($startfilter)) {
1.415 raeburn 4924: if ((defined($start)) && ($start >= $startfilter)) {
1.299 raeburn 4925: $match = 0;
1.421 raeburn 4926: next;
1.299 raeburn 4927: }
4928: }
4929: unless ($endfilter eq '.' || !defined($endfilter)) {
1.421 raeburn 4930: if ((defined($end)) && (($end > 0) && ($end <= $endfilter))) {
1.299 raeburn 4931: $match = 0;
1.421 raeburn 4932: next;
1.299 raeburn 4933: }
4934: }
4935: if ($match == 1) {
4936: $qresult.=$key.'='.$value.'&';
4937: }
4938: }
1.311 albertel 4939: if (&untie_domain_hash($hashref)) {
1.299 raeburn 4940: chop($qresult);
1.387 albertel 4941: &Reply($client, \$qresult, $userinput);
1.299 raeburn 4942: } else {
4943: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4944: "while attempting domrolesdump\n", $userinput);
4945: }
4946: } else {
4947: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
4948: "while attempting domrolesdump\n", $userinput);
4949: }
4950: return 1;
4951: }
4952:
4953: ®ister_handler("domrolesdump", \&dump_domainroles_handler, 0, 1, 0);
4954:
4955:
1.238 foxr 4956: # Process the tmpput command I'm not sure what this does.. Seems to
4957: # create a file in the lonDaemons/tmp directory of the form $id.tmp
4958: # where Id is the client's ip concatenated with a sequence number.
4959: # The file will contain some value that is passed in. Is this e.g.
4960: # a login token?
4961: #
4962: # Parameters:
4963: # $cmd - The command that got us dispatched.
4964: # $tail - The remainder of the request following $cmd:
4965: # In this case this will be the contents of the file.
4966: # $client - Socket connected to the client.
4967: # Returns:
4968: # 1 indicating processing can continue.
4969: # Side effects:
4970: # A file is created in the local filesystem.
4971: # A reply is sent to the client.
4972: sub tmp_put_handler {
4973: my ($cmd, $what, $client) = @_;
4974:
4975: my $userinput = "$cmd:$what"; # Reconstruct for logging.
4976:
1.347 raeburn 4977: my ($record,$context) = split(/:/,$what);
4978: if ($context ne '') {
4979: chomp($context);
4980: $context = &unescape($context);
4981: }
4982: my ($id,$store);
1.238 foxr 4983: $tmpsnum++;
1.454 raeburn 4984: if (($context eq 'resetpw') || ($context eq 'createaccount')) {
1.347 raeburn 4985: $id = &md5_hex(&md5_hex(time.{}.rand().$$));
4986: } else {
4987: $id = $$.'_'.$clientip.'_'.$tmpsnum;
4988: }
1.238 foxr 4989: $id=~s/\W/\_/g;
1.347 raeburn 4990: $record=~s/\n//g;
1.238 foxr 4991: my $execdir=$perlvar{'lonDaemons'};
4992: if ($store=IO::File->new(">$execdir/tmp/$id.tmp")) {
1.347 raeburn 4993: print $store $record;
1.238 foxr 4994: close $store;
1.387 albertel 4995: &Reply($client, \$id, $userinput);
1.238 foxr 4996: } else {
4997: &Failure( $client, "error: ".($!+0)."IO::File->new Failed ".
4998: "while attempting tmpput\n", $userinput);
4999: }
5000: return 1;
5001:
5002: }
5003: ®ister_handler("tmpput", \&tmp_put_handler, 0, 1, 0);
1.263 albertel 5004:
1.238 foxr 5005: # Processes the tmpget command. This command returns the contents
5006: # of a temporary resource file(?) created via tmpput.
5007: #
5008: # Paramters:
5009: # $cmd - Command that got us dispatched.
5010: # $id - Tail of the command, contain the id of the resource
5011: # we want to fetch.
5012: # $client - socket open on the client.
5013: # Return:
5014: # 1 - Inidcating processing can continue.
5015: # Side effects:
5016: # A reply is sent to the client.
5017: #
5018: sub tmp_get_handler {
5019: my ($cmd, $id, $client) = @_;
5020:
5021: my $userinput = "$cmd:$id";
5022:
5023:
5024: $id=~s/\W/\_/g;
5025: my $store;
5026: my $execdir=$perlvar{'lonDaemons'};
5027: if ($store=IO::File->new("$execdir/tmp/$id.tmp")) {
5028: my $reply=<$store>;
1.387 albertel 5029: &Reply( $client, \$reply, $userinput);
1.238 foxr 5030: close $store;
5031: } else {
5032: &Failure( $client, "error: ".($!+0)."IO::File->new Failed ".
5033: "while attempting tmpget\n", $userinput);
5034: }
5035:
5036: return 1;
5037: }
5038: ®ister_handler("tmpget", \&tmp_get_handler, 0, 1, 0);
1.263 albertel 5039:
1.238 foxr 5040: #
5041: # Process the tmpdel command. This command deletes a temp resource
5042: # created by the tmpput command.
5043: #
5044: # Parameters:
5045: # $cmd - Command that got us here.
5046: # $id - Id of the temporary resource created.
5047: # $client - socket open on the client process.
5048: #
5049: # Returns:
5050: # 1 - Indicating processing should continue.
5051: # Side Effects:
5052: # A file is deleted
5053: # A reply is sent to the client.
5054: sub tmp_del_handler {
5055: my ($cmd, $id, $client) = @_;
5056:
5057: my $userinput= "$cmd:$id";
5058:
5059: chomp($id);
5060: $id=~s/\W/\_/g;
5061: my $execdir=$perlvar{'lonDaemons'};
5062: if (unlink("$execdir/tmp/$id.tmp")) {
5063: &Reply($client, "ok\n", $userinput);
5064: } else {
5065: &Failure( $client, "error: ".($!+0)."Unlink tmp Failed ".
5066: "while attempting tmpdel\n", $userinput);
5067: }
5068:
5069: return 1;
5070:
5071: }
5072: ®ister_handler("tmpdel", \&tmp_del_handler, 0, 1, 0);
1.263 albertel 5073:
1.238 foxr 5074: #
1.246 foxr 5075: # Processes the setannounce command. This command
5076: # creates a file named announce.txt in the top directory of
5077: # the documentn root and sets its contents. The announce.txt file is
5078: # printed in its entirety at the LonCAPA login page. Note:
5079: # once the announcement.txt fileis created it cannot be deleted.
5080: # However, setting the contents of the file to empty removes the
5081: # announcement from the login page of loncapa so who cares.
5082: #
5083: # Parameters:
5084: # $cmd - The command that got us dispatched.
5085: # $announcement - The text of the announcement.
5086: # $client - Socket open on the client process.
5087: # Retunrns:
5088: # 1 - Indicating request processing should continue
5089: # Side Effects:
5090: # The file {DocRoot}/announcement.txt is created.
5091: # A reply is sent to $client.
5092: #
5093: sub set_announce_handler {
5094: my ($cmd, $announcement, $client) = @_;
5095:
5096: my $userinput = "$cmd:$announcement";
5097:
5098: chomp($announcement);
5099: $announcement=&unescape($announcement);
5100: if (my $store=IO::File->new('>'.$perlvar{'lonDocRoot'}.
5101: '/announcement.txt')) {
5102: print $store $announcement;
5103: close $store;
5104: &Reply($client, "ok\n", $userinput);
5105: } else {
5106: &Failure($client, "error: ".($!+0)."\n", $userinput);
5107: }
5108:
5109: return 1;
5110: }
5111: ®ister_handler("setannounce", \&set_announce_handler, 0, 1, 0);
1.263 albertel 5112:
1.246 foxr 5113: #
5114: # Return the version of the daemon. This can be used to determine
5115: # the compatibility of cross version installations or, alternatively to
5116: # simply know who's out of date and who isn't. Note that the version
5117: # is returned concatenated with the tail.
5118: # Parameters:
5119: # $cmd - the request that dispatched to us.
5120: # $tail - Tail of the request (client's version?).
5121: # $client - Socket open on the client.
5122: #Returns:
5123: # 1 - continue processing requests.
5124: # Side Effects:
5125: # Replies with version to $client.
5126: sub get_version_handler {
5127: my ($cmd, $tail, $client) = @_;
5128:
5129: my $userinput = $cmd.$tail;
5130:
5131: &Reply($client, &version($userinput)."\n", $userinput);
5132:
5133:
5134: return 1;
5135: }
5136: ®ister_handler("version", \&get_version_handler, 0, 1, 0);
1.263 albertel 5137:
1.246 foxr 5138: # Set the current host and domain. This is used to support
5139: # multihomed systems. Each IP of the system, or even separate daemons
5140: # on the same IP can be treated as handling a separate lonCAPA virtual
5141: # machine. This command selects the virtual lonCAPA. The client always
5142: # knows the right one since it is lonc and it is selecting the domain/system
5143: # from the hosts.tab file.
5144: # Parameters:
5145: # $cmd - Command that dispatched us.
5146: # $tail - Tail of the command (domain/host requested).
5147: # $socket - Socket open on the client.
5148: #
5149: # Returns:
5150: # 1 - Indicates the program should continue to process requests.
5151: # Side-effects:
5152: # The default domain/system context is modified for this daemon.
5153: # a reply is sent to the client.
5154: #
5155: sub set_virtual_host_handler {
5156: my ($cmd, $tail, $socket) = @_;
5157:
5158: my $userinput ="$cmd:$tail";
5159:
5160: &Reply($client, &sethost($userinput)."\n", $userinput);
5161:
5162:
5163: return 1;
5164: }
1.247 albertel 5165: ®ister_handler("sethost", \&set_virtual_host_handler, 0, 1, 0);
1.246 foxr 5166:
5167: # Process a request to exit:
5168: # - "bye" is sent to the client.
5169: # - The client socket is shutdown and closed.
5170: # - We indicate to the caller that we should exit.
5171: # Formal Parameters:
5172: # $cmd - The command that got us here.
5173: # $tail - Tail of the command (empty).
5174: # $client - Socket open on the tail.
5175: # Returns:
5176: # 0 - Indicating the program should exit!!
5177: #
5178: sub exit_handler {
5179: my ($cmd, $tail, $client) = @_;
5180:
5181: my $userinput = "$cmd:$tail";
5182:
5183: &logthis("Client $clientip ($clientname) hanging up: $userinput");
5184: &Reply($client, "bye\n", $userinput);
5185: $client->shutdown(2); # shutdown the socket forcibly.
5186: $client->close();
5187:
5188: return 0;
5189: }
1.248 foxr 5190: ®ister_handler("exit", \&exit_handler, 0,1,1);
5191: ®ister_handler("init", \&exit_handler, 0,1,1);
5192: ®ister_handler("quit", \&exit_handler, 0,1,1);
5193:
5194: # Determine if auto-enrollment is enabled.
5195: # Note that the original had what I believe to be a defect.
5196: # The original returned 0 if the requestor was not a registerd client.
5197: # It should return "refused".
5198: # Formal Parameters:
5199: # $cmd - The command that invoked us.
5200: # $tail - The tail of the command (Extra command parameters.
5201: # $client - The socket open on the client that issued the request.
5202: # Returns:
5203: # 1 - Indicating processing should continue.
5204: #
5205: sub enrollment_enabled_handler {
5206: my ($cmd, $tail, $client) = @_;
5207: my $userinput = $cmd.":".$tail; # For logging purposes.
5208:
5209:
1.337 albertel 5210: my ($cdom) = split(/:/, $tail, 2); # Domain we're asking about.
5211:
1.248 foxr 5212: my $outcome = &localenroll::run($cdom);
1.387 albertel 5213: &Reply($client, \$outcome, $userinput);
1.248 foxr 5214:
5215: return 1;
5216: }
5217: ®ister_handler("autorun", \&enrollment_enabled_handler, 0, 1, 0);
5218:
1.417 raeburn 5219: #
1.423 raeburn 5220: # Validate an institutional code used for a LON-CAPA course.
1.417 raeburn 5221: #
5222: # Formal Parameters:
5223: # $cmd - The command request that got us dispatched.
5224: # $tail - The tail of the command. In this case,
5225: # this is a colon separated set of words that will be split
5226: # into:
1.424 raeburn 5227: # $dom - The domain for which the check of
5228: # institutional course code will occur.
5229: #
5230: # $instcode - The institutional code for the course
5231: # being requested, or validated for rights
5232: # to request.
5233: #
5234: # $owner - The course requestor (who will be the
5235: # course owner, in the form username:domain
5236: #
1.417 raeburn 5237: # $client - Socket open on the client.
5238: # Returns:
5239: # 1 - Indicating processing should continue.
5240: #
5241: sub validate_instcode_handler {
5242: my ($cmd, $tail, $client) = @_;
5243: my $userinput = "$cmd:$tail";
1.423 raeburn 5244: my ($dom,$instcode,$owner) = split(/:/, $tail);
1.422 raeburn 5245: $instcode = &unescape($instcode);
5246: $owner = &unescape($owner);
1.489.2.3 raeburn 5247: my ($outcome,$description,$credits) =
1.426 raeburn 5248: &localenroll::validate_instcode($dom,$instcode,$owner);
1.489.2.3 raeburn 5249: my $result = &escape($outcome).'&'.&escape($description).'&'.
5250: &escape($credits);
1.426 raeburn 5251: &Reply($client, \$result, $userinput);
1.417 raeburn 5252:
5253: return 1;
5254: }
5255: ®ister_handler("autovalidateinstcode", \&validate_instcode_handler, 0, 1, 0);
5256:
1.248 foxr 5257: # Get the official sections for which auto-enrollment is possible.
5258: # Since the admin people won't know about 'unofficial sections'
5259: # we cannot auto-enroll on them.
5260: # Formal Parameters:
5261: # $cmd - The command request that got us dispatched here.
5262: # $tail - The remainder of the request. In our case this
5263: # will be split into:
5264: # $coursecode - The course name from the admin point of view.
5265: # $cdom - The course's domain(?).
5266: # $client - Socket open on the client.
5267: # Returns:
5268: # 1 - Indiciting processing should continue.
5269: #
5270: sub get_sections_handler {
5271: my ($cmd, $tail, $client) = @_;
5272: my $userinput = "$cmd:$tail";
5273:
5274: my ($coursecode, $cdom) = split(/:/, $tail);
5275: my @secs = &localenroll::get_sections($coursecode,$cdom);
5276: my $seclist = &escape(join(':',@secs));
5277:
1.387 albertel 5278: &Reply($client, \$seclist, $userinput);
1.248 foxr 5279:
5280:
5281: return 1;
5282: }
5283: ®ister_handler("autogetsections", \&get_sections_handler, 0, 1, 0);
5284:
5285: # Validate the owner of a new course section.
5286: #
5287: # Formal Parameters:
5288: # $cmd - Command that got us dispatched.
5289: # $tail - the remainder of the command. For us this consists of a
5290: # colon separated string containing:
5291: # $inst - Course Id from the institutions point of view.
5292: # $owner - Proposed owner of the course.
5293: # $cdom - Domain of the course (from the institutions
5294: # point of view?)..
5295: # $client - Socket open on the client.
5296: #
5297: # Returns:
5298: # 1 - Processing should continue.
5299: #
5300: sub validate_course_owner_handler {
5301: my ($cmd, $tail, $client) = @_;
5302: my $userinput = "$cmd:$tail";
1.470 raeburn 5303: my ($inst_course_id, $owner, $cdom, $coowners) = split(/:/, $tail);
5304:
1.336 raeburn 5305: $owner = &unescape($owner);
1.470 raeburn 5306: $coowners = &unescape($coowners);
5307: my $outcome = &localenroll::new_course($inst_course_id,$owner,$cdom,$coowners);
1.387 albertel 5308: &Reply($client, \$outcome, $userinput);
1.248 foxr 5309:
5310:
5311:
5312: return 1;
5313: }
5314: ®ister_handler("autonewcourse", \&validate_course_owner_handler, 0, 1, 0);
1.263 albertel 5315:
1.248 foxr 5316: #
5317: # Validate a course section in the official schedule of classes
5318: # from the institutions point of view (part of autoenrollment).
5319: #
5320: # Formal Parameters:
5321: # $cmd - The command request that got us dispatched.
5322: # $tail - The tail of the command. In this case,
5323: # this is a colon separated set of words that will be split
5324: # into:
5325: # $inst_course_id - The course/section id from the
5326: # institutions point of view.
5327: # $cdom - The domain from the institutions
5328: # point of view.
5329: # $client - Socket open on the client.
5330: # Returns:
5331: # 1 - Indicating processing should continue.
5332: #
5333: sub validate_course_section_handler {
5334: my ($cmd, $tail, $client) = @_;
5335: my $userinput = "$cmd:$tail";
5336: my ($inst_course_id, $cdom) = split(/:/, $tail);
5337:
5338: my $outcome=&localenroll::validate_courseID($inst_course_id,$cdom);
1.387 albertel 5339: &Reply($client, \$outcome, $userinput);
1.248 foxr 5340:
5341:
5342: return 1;
5343: }
5344: ®ister_handler("autovalidatecourse", \&validate_course_section_handler, 0, 1, 0);
5345:
5346: #
1.340 raeburn 5347: # Validate course owner's access to enrollment data for specific class section.
5348: #
5349: #
5350: # Formal Parameters:
5351: # $cmd - The command request that got us dispatched.
5352: # $tail - The tail of the command. In this case this is a colon separated
5353: # set of words that will be split into:
5354: # $inst_class - Institutional code for the specific class section
5355: # $courseowner - The escaped username:domain of the course owner
5356: # $cdom - The domain of the course from the institution's
5357: # point of view.
5358: # $client - The socket open on the client.
5359: # Returns:
5360: # 1 - continue processing.
5361: #
5362:
5363: sub validate_class_access_handler {
5364: my ($cmd, $tail, $client) = @_;
5365: my $userinput = "$cmd:$tail";
1.383 raeburn 5366: my ($inst_class,$ownerlist,$cdom) = split(/:/, $tail);
1.392 raeburn 5367: my $owners = &unescape($ownerlist);
1.341 albertel 5368: my $outcome;
5369: eval {
5370: local($SIG{__DIE__})='DEFAULT';
1.392 raeburn 5371: $outcome=&localenroll::check_section($inst_class,$owners,$cdom);
1.341 albertel 5372: };
1.387 albertel 5373: &Reply($client,\$outcome, $userinput);
1.340 raeburn 5374:
5375: return 1;
5376: }
5377: ®ister_handler("autovalidateclass_sec", \&validate_class_access_handler, 0, 1, 0);
5378:
5379: #
5380: # Create a password for a new LON-CAPA user added by auto-enrollment.
5381: # Only used for case where authentication method for new user is localauth
1.248 foxr 5382: #
5383: # Formal Parameters:
5384: # $cmd - The command request that got us dispatched.
5385: # $tail - The tail of the command. In this case this is a colon separated
5386: # set of words that will be split into:
1.340 raeburn 5387: # $authparam - An authentication parameter (localauth parameter).
1.248 foxr 5388: # $cdom - The domain of the course from the institution's
5389: # point of view.
5390: # $client - The socket open on the client.
5391: # Returns:
5392: # 1 - continue processing.
5393: #
5394: sub create_auto_enroll_password_handler {
5395: my ($cmd, $tail, $client) = @_;
5396: my $userinput = "$cmd:$tail";
5397:
5398: my ($authparam, $cdom) = split(/:/, $userinput);
5399:
5400: my ($create_passwd,$authchk);
5401: ($authparam,
5402: $create_passwd,
5403: $authchk) = &localenroll::create_password($authparam,$cdom);
5404:
5405: &Reply($client, &escape($authparam.':'.$create_passwd.':'.$authchk)."\n",
5406: $userinput);
5407:
5408:
5409: return 1;
5410: }
5411: ®ister_handler("autocreatepassword", \&create_auto_enroll_password_handler,
5412: 0, 1, 0);
5413:
1.489.2.22 raeburn 5414: sub auto_export_grades_handler {
5415: my ($cmd, $tail, $client) = @_;
5416: my $userinput = "$cmd:$tail";
5417: my ($cdom,$cnum,$info,$data) = split(/:/,$tail);
5418: my $inforef = &Apache::lonnet::thaw_unescape($info);
5419: my $dataref = &Apache::lonnet::thaw_unescape($data);
5420: my ($outcome,$result);;
5421: eval {
5422: local($SIG{__DIE__})='DEFAULT';
5423: my %rtnhash;
5424: $outcome=&localenroll::export_grades($cdom,$cnum,$inforef,$dataref,\%rtnhash);
5425: if ($outcome eq 'ok') {
5426: foreach my $key (keys(%rtnhash)) {
5427: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($rtnhash{$key}).'&';
5428: }
5429: $result =~ s/\&$//;
5430: }
5431: };
5432: if (!$@) {
5433: if ($outcome eq 'ok') {
5434: if ($cipher) {
5435: my $cmdlength=length($result);
5436: $result.=" ";
5437: my $encresult='';
5438: for (my $encidx=0;$encidx<=$cmdlength;$encidx+=8) {
5439: $encresult.= unpack("H16",
5440: $cipher->encrypt(substr($result,
5441: $encidx,
5442: 8)));
5443: }
5444: &Reply( $client, "enc:$cmdlength:$encresult\n", $userinput);
5445: } else {
5446: &Failure( $client, "error:no_key\n", $userinput);
5447: }
5448: } else {
5449: &Reply($client, "$outcome\n", $userinput);
5450: }
5451: } else {
5452: &Failure($client,"export_error\n",$userinput);
5453: }
5454: return 1;
5455: }
5456: ®ister_handler("autoexportgrades", \&auto_export_grades_handler,
5457: 0, 1, 0);
5458:
5459:
1.248 foxr 5460: # Retrieve and remove temporary files created by/during autoenrollment.
5461: #
5462: # Formal Parameters:
5463: # $cmd - The command that got us dispatched.
5464: # $tail - The tail of the command. In our case this is a colon
5465: # separated list that will be split into:
5466: # $filename - The name of the file to remove.
5467: # The filename is given as a path relative to
5468: # the LonCAPA temp file directory.
5469: # $client - Socket open on the client.
5470: #
5471: # Returns:
5472: # 1 - Continue processing.
5473: sub retrieve_auto_file_handler {
5474: my ($cmd, $tail, $client) = @_;
5475: my $userinput = "cmd:$tail";
5476:
5477: my ($filename) = split(/:/, $tail);
5478:
5479: my $source = $perlvar{'lonDaemons'}.'/tmp/'.$filename;
1.489.2.20 raeburn 5480: if ($filename =~m{/\.\./}) {
5481: &Failure($client, "refused\n", $userinput);
5482: } elsif ( (-e $source) && ($filename ne '') ) {
1.248 foxr 5483: my $reply = '';
5484: if (open(my $fh,$source)) {
5485: while (<$fh>) {
5486: chomp($_);
5487: $_ =~ s/^\s+//g;
5488: $_ =~ s/\s+$//g;
5489: $reply .= $_;
5490: }
5491: close($fh);
5492: &Reply($client, &escape($reply)."\n", $userinput);
5493:
5494: # Does this have to be uncommented??!? (RF).
5495: #
5496: # unlink($source);
5497: } else {
5498: &Failure($client, "error\n", $userinput);
5499: }
5500: } else {
5501: &Failure($client, "error\n", $userinput);
5502: }
5503:
5504:
5505: return 1;
5506: }
5507: ®ister_handler("autoretrieve", \&retrieve_auto_file_handler, 0,1,0);
5508:
1.423 raeburn 5509: sub crsreq_checks_handler {
5510: my ($cmd, $tail, $client) = @_;
5511: my $userinput = "$cmd:$tail";
5512: my $dom = $tail;
5513: my $result;
1.489.2.12 raeburn 5514: my @reqtypes = ('official','unofficial','community','textbook');
1.423 raeburn 5515: eval {
5516: local($SIG{__DIE__})='DEFAULT';
5517: my %validations;
1.424 raeburn 5518: my $response = &localenroll::crsreq_checks($dom,\@reqtypes,
5519: \%validations);
1.423 raeburn 5520: if ($response eq 'ok') {
5521: foreach my $key (keys(%validations)) {
5522: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($validations{$key}).'&';
5523: }
5524: $result =~ s/\&$//;
5525: } else {
5526: $result = 'error';
5527: }
5528: };
5529: if (!$@) {
5530: &Reply($client, \$result, $userinput);
5531: } else {
5532: &Failure($client,"unknown_cmd\n",$userinput);
5533: }
5534: return 1;
5535: }
5536: ®ister_handler("autocrsreqchecks", \&crsreq_checks_handler, 0, 1, 0);
5537:
5538: sub validate_crsreq_handler {
5539: my ($cmd, $tail, $client) = @_;
5540: my $userinput = "$cmd:$tail";
1.489.2.13 raeburn 5541: my ($dom,$owner,$crstype,$inststatuslist,$instcode,$instseclist,$customdata) = split(/:/, $tail);
1.423 raeburn 5542: $instcode = &unescape($instcode);
5543: $owner = &unescape($owner);
5544: $crstype = &unescape($crstype);
5545: $inststatuslist = &unescape($inststatuslist);
5546: $instcode = &unescape($instcode);
5547: $instseclist = &unescape($instseclist);
1.489.2.13 raeburn 5548: my $custominfo = &Apache::lonnet::thaw_unescape($customdata);
1.423 raeburn 5549: my $outcome;
5550: eval {
5551: local($SIG{__DIE__})='DEFAULT';
5552: $outcome = &localenroll::validate_crsreq($dom,$owner,$crstype,
5553: $inststatuslist,$instcode,
1.489.2.13 raeburn 5554: $instseclist,$custominfo);
1.423 raeburn 5555: };
5556: if (!$@) {
5557: &Reply($client, \$outcome, $userinput);
5558: } else {
5559: &Failure($client,"unknown_cmd\n",$userinput);
5560: }
5561: return 1;
5562: }
5563: ®ister_handler("autocrsreqvalidation", \&validate_crsreq_handler, 0, 1, 0);
5564:
1.489.2.11 raeburn 5565: sub crsreq_update_handler {
5566: my ($cmd, $tail, $client) = @_;
5567: my $userinput = "$cmd:$tail";
1.489.2.14 raeburn 5568: my ($cdom,$cnum,$crstype,$action,$ownername,$ownerdomain,$fullname,$title,$code,
5569: $accessstart,$accessend,$infohashref) =
1.489.2.11 raeburn 5570: split(/:/, $tail);
5571: $crstype = &unescape($crstype);
5572: $action = &unescape($action);
5573: $ownername = &unescape($ownername);
5574: $ownerdomain = &unescape($ownerdomain);
5575: $fullname = &unescape($fullname);
5576: $title = &unescape($title);
5577: $code = &unescape($code);
1.489.2.14 raeburn 5578: $accessstart = &unescape($accessstart);
5579: $accessend = &unescape($accessend);
1.489.2.11 raeburn 5580: my $incoming = &Apache::lonnet::thaw_unescape($infohashref);
5581: my ($result,$outcome);
5582: eval {
5583: local($SIG{__DIE__})='DEFAULT';
5584: my %rtnhash;
5585: $outcome = &localenroll::crsreq_updates($cdom,$cnum,$crstype,$action,
5586: $ownername,$ownerdomain,$fullname,
1.489.2.14 raeburn 5587: $title,$code,$accessstart,$accessend,
5588: $incoming,\%rtnhash);
1.489.2.11 raeburn 5589: if ($outcome eq 'ok') {
1.489.2.18 raeburn 5590: my @posskeys = qw(createdweb createdmsg createdcustomized createdactions queuedweb queuedmsg formitems reviewweb validationjs onload javascript);
1.489.2.11 raeburn 5591: foreach my $key (keys(%rtnhash)) {
5592: if (grep(/^\Q$key\E/,@posskeys)) {
5593: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($rtnhash{$key}).'&';
5594: }
5595: }
5596: $result =~ s/\&$//;
5597: }
5598: };
5599: if (!$@) {
5600: if ($outcome eq 'ok') {
5601: &Reply($client, \$result, $userinput);
5602: } else {
5603: &Reply($client, "format_error\n", $userinput);
5604: }
5605: } else {
5606: &Failure($client,"unknown_cmd\n",$userinput);
5607: }
5608: return 1;
5609: }
5610: ®ister_handler("autocrsrequpdate", \&crsreq_update_handler, 0, 1, 0);
5611:
1.248 foxr 5612: #
5613: # Read and retrieve institutional code format (for support form).
5614: # Formal Parameters:
5615: # $cmd - Command that dispatched us.
5616: # $tail - Tail of the command. In this case it conatins
5617: # the course domain and the coursename.
5618: # $client - Socket open on the client.
5619: # Returns:
5620: # 1 - Continue processing.
5621: #
5622: sub get_institutional_code_format_handler {
5623: my ($cmd, $tail, $client) = @_;
5624: my $userinput = "$cmd:$tail";
5625:
5626: my $reply;
5627: my($cdom,$course) = split(/:/,$tail);
5628: my @pairs = split/\&/,$course;
5629: my %instcodes = ();
5630: my %codes = ();
5631: my @codetitles = ();
5632: my %cat_titles = ();
5633: my %cat_order = ();
5634: foreach (@pairs) {
5635: my ($key,$value) = split/=/,$_;
5636: $instcodes{&unescape($key)} = &unescape($value);
5637: }
5638: my $formatreply = &localenroll::instcode_format($cdom,
5639: \%instcodes,
5640: \%codes,
5641: \@codetitles,
5642: \%cat_titles,
5643: \%cat_order);
5644: if ($formatreply eq 'ok') {
1.365 albertel 5645: my $codes_str = &Apache::lonnet::hash2str(%codes);
5646: my $codetitles_str = &Apache::lonnet::array2str(@codetitles);
5647: my $cat_titles_str = &Apache::lonnet::hash2str(%cat_titles);
5648: my $cat_order_str = &Apache::lonnet::hash2str(%cat_order);
1.248 foxr 5649: &Reply($client,
5650: $codes_str.':'.$codetitles_str.':'.$cat_titles_str.':'
5651: .$cat_order_str."\n",
5652: $userinput);
5653: } else {
5654: # this else branch added by RF since if not ok, lonc will
5655: # hang waiting on reply until timeout.
5656: #
5657: &Reply($client, "format_error\n", $userinput);
5658: }
5659:
5660: return 1;
5661: }
1.265 albertel 5662: ®ister_handler("autoinstcodeformat",
5663: \&get_institutional_code_format_handler,0,1,0);
1.246 foxr 5664:
1.345 raeburn 5665: sub get_institutional_defaults_handler {
5666: my ($cmd, $tail, $client) = @_;
5667: my $userinput = "$cmd:$tail";
5668:
5669: my $dom = $tail;
5670: my %defaults_hash;
5671: my @code_order;
5672: my $outcome;
5673: eval {
5674: local($SIG{__DIE__})='DEFAULT';
5675: $outcome = &localenroll::instcode_defaults($dom,\%defaults_hash,
5676: \@code_order);
5677: };
5678: if (!$@) {
5679: if ($outcome eq 'ok') {
5680: my $result='';
5681: while (my ($key,$value) = each(%defaults_hash)) {
5682: $result.=&escape($key).'='.&escape($value).'&';
5683: }
5684: $result .= 'code_order='.&escape(join('&',@code_order));
1.387 albertel 5685: &Reply($client,\$result,$userinput);
1.345 raeburn 5686: } else {
5687: &Reply($client,"error\n", $userinput);
5688: }
5689: } else {
5690: &Failure($client,"unknown_cmd\n",$userinput);
5691: }
5692: }
5693: ®ister_handler("autoinstcodedefaults",
5694: \&get_institutional_defaults_handler,0,1,0);
5695:
1.416 raeburn 5696: sub get_possible_instcodes_handler {
5697: my ($cmd, $tail, $client) = @_;
5698: my $userinput = "$cmd:$tail";
5699:
5700: my $reply;
5701: my $cdom = $tail;
1.417 raeburn 5702: my (@codetitles,%cat_titles,%cat_order,@code_order);
1.416 raeburn 5703: my $formatreply = &localenroll::possible_instcodes($cdom,
5704: \@codetitles,
5705: \%cat_titles,
1.417 raeburn 5706: \%cat_order,
5707: \@code_order);
1.416 raeburn 5708: if ($formatreply eq 'ok') {
5709: my $result = join('&',map {&escape($_);} (@codetitles)).':';
1.417 raeburn 5710: $result .= join('&',map {&escape($_);} (@code_order)).':';
1.416 raeburn 5711: foreach my $key (keys(%cat_titles)) {
5712: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($cat_titles{$key}).'&';
5713: }
5714: $result =~ s/\&$//;
5715: $result .= ':';
5716: foreach my $key (keys(%cat_order)) {
5717: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($cat_order{$key}).'&';
5718: }
5719: $result =~ s/\&$//;
5720: &Reply($client,\$result,$userinput);
5721: } else {
5722: &Reply($client, "format_error\n", $userinput);
5723: }
5724: return 1;
5725: }
5726: ®ister_handler("autopossibleinstcodes",
5727: \&get_possible_instcodes_handler,0,1,0);
5728:
1.381 raeburn 5729: sub get_institutional_user_rules {
5730: my ($cmd, $tail, $client) = @_;
5731: my $userinput = "$cmd:$tail";
5732: my $dom = &unescape($tail);
5733: my (%rules_hash,@rules_order);
5734: my $outcome;
5735: eval {
5736: local($SIG{__DIE__})='DEFAULT';
5737: $outcome = &localenroll::username_rules($dom,\%rules_hash,\@rules_order);
5738: };
5739: if (!$@) {
5740: if ($outcome eq 'ok') {
5741: my $result;
5742: foreach my $key (keys(%rules_hash)) {
5743: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($rules_hash{$key}).'&';
5744: }
5745: $result =~ s/\&$//;
5746: $result .= ':';
5747: if (@rules_order > 0) {
5748: foreach my $item (@rules_order) {
5749: $result .= &escape($item).'&';
5750: }
5751: }
5752: $result =~ s/\&$//;
1.387 albertel 5753: &Reply($client,\$result,$userinput);
1.381 raeburn 5754: } else {
5755: &Reply($client,"error\n", $userinput);
5756: }
5757: } else {
5758: &Failure($client,"unknown_cmd\n",$userinput);
5759: }
5760: }
5761: ®ister_handler("instuserrules",\&get_institutional_user_rules,0,1,0);
5762:
1.389 raeburn 5763: sub get_institutional_id_rules {
5764: my ($cmd, $tail, $client) = @_;
5765: my $userinput = "$cmd:$tail";
5766: my $dom = &unescape($tail);
5767: my (%rules_hash,@rules_order);
5768: my $outcome;
5769: eval {
5770: local($SIG{__DIE__})='DEFAULT';
5771: $outcome = &localenroll::id_rules($dom,\%rules_hash,\@rules_order);
5772: };
5773: if (!$@) {
5774: if ($outcome eq 'ok') {
5775: my $result;
5776: foreach my $key (keys(%rules_hash)) {
5777: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($rules_hash{$key}).'&';
5778: }
5779: $result =~ s/\&$//;
5780: $result .= ':';
5781: if (@rules_order > 0) {
5782: foreach my $item (@rules_order) {
5783: $result .= &escape($item).'&';
5784: }
5785: }
5786: $result =~ s/\&$//;
5787: &Reply($client,\$result,$userinput);
5788: } else {
5789: &Reply($client,"error\n", $userinput);
5790: }
5791: } else {
5792: &Failure($client,"unknown_cmd\n",$userinput);
5793: }
5794: }
5795: ®ister_handler("instidrules",\&get_institutional_id_rules,0,1,0);
5796:
1.397 raeburn 5797: sub get_institutional_selfcreate_rules {
1.396 raeburn 5798: my ($cmd, $tail, $client) = @_;
5799: my $userinput = "$cmd:$tail";
5800: my $dom = &unescape($tail);
5801: my (%rules_hash,@rules_order);
5802: my $outcome;
5803: eval {
5804: local($SIG{__DIE__})='DEFAULT';
1.397 raeburn 5805: $outcome = &localenroll::selfcreate_rules($dom,\%rules_hash,\@rules_order);
1.396 raeburn 5806: };
5807: if (!$@) {
5808: if ($outcome eq 'ok') {
5809: my $result;
5810: foreach my $key (keys(%rules_hash)) {
5811: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($rules_hash{$key}).'&';
5812: }
5813: $result =~ s/\&$//;
5814: $result .= ':';
5815: if (@rules_order > 0) {
5816: foreach my $item (@rules_order) {
5817: $result .= &escape($item).'&';
5818: }
5819: }
5820: $result =~ s/\&$//;
5821: &Reply($client,\$result,$userinput);
5822: } else {
5823: &Reply($client,"error\n", $userinput);
5824: }
5825: } else {
5826: &Failure($client,"unknown_cmd\n",$userinput);
5827: }
5828: }
1.397 raeburn 5829: ®ister_handler("instemailrules",\&get_institutional_selfcreate_rules,0,1,0);
1.396 raeburn 5830:
1.381 raeburn 5831:
5832: sub institutional_username_check {
5833: my ($cmd, $tail, $client) = @_;
5834: my $userinput = "$cmd:$tail";
5835: my %rulecheck;
5836: my $outcome;
5837: my ($udom,$uname,@rules) = split(/:/,$tail);
5838: $udom = &unescape($udom);
5839: $uname = &unescape($uname);
5840: @rules = map {&unescape($_);} (@rules);
5841: eval {
5842: local($SIG{__DIE__})='DEFAULT';
5843: $outcome = &localenroll::username_check($udom,$uname,\@rules,\%rulecheck);
5844: };
5845: if (!$@) {
5846: if ($outcome eq 'ok') {
5847: my $result='';
5848: foreach my $key (keys(%rulecheck)) {
5849: $result.=&escape($key).'='.&Apache::lonnet::freeze_escape($rulecheck{$key}).'&';
5850: }
1.387 albertel 5851: &Reply($client,\$result,$userinput);
1.381 raeburn 5852: } else {
5853: &Reply($client,"error\n", $userinput);
5854: }
5855: } else {
5856: &Failure($client,"unknown_cmd\n",$userinput);
5857: }
5858: }
5859: ®ister_handler("instrulecheck",\&institutional_username_check,0,1,0);
5860:
1.389 raeburn 5861: sub institutional_id_check {
5862: my ($cmd, $tail, $client) = @_;
5863: my $userinput = "$cmd:$tail";
5864: my %rulecheck;
5865: my $outcome;
5866: my ($udom,$id,@rules) = split(/:/,$tail);
5867: $udom = &unescape($udom);
5868: $id = &unescape($id);
5869: @rules = map {&unescape($_);} (@rules);
5870: eval {
5871: local($SIG{__DIE__})='DEFAULT';
5872: $outcome = &localenroll::id_check($udom,$id,\@rules,\%rulecheck);
5873: };
5874: if (!$@) {
5875: if ($outcome eq 'ok') {
5876: my $result='';
5877: foreach my $key (keys(%rulecheck)) {
5878: $result.=&escape($key).'='.&Apache::lonnet::freeze_escape($rulecheck{$key}).'&';
5879: }
5880: &Reply($client,\$result,$userinput);
5881: } else {
5882: &Reply($client,"error\n", $userinput);
5883: }
5884: } else {
5885: &Failure($client,"unknown_cmd\n",$userinput);
5886: }
5887: }
5888: ®ister_handler("instidrulecheck",\&institutional_id_check,0,1,0);
1.345 raeburn 5889:
1.397 raeburn 5890: sub institutional_selfcreate_check {
1.396 raeburn 5891: my ($cmd, $tail, $client) = @_;
5892: my $userinput = "$cmd:$tail";
5893: my %rulecheck;
5894: my $outcome;
5895: my ($udom,$email,@rules) = split(/:/,$tail);
5896: $udom = &unescape($udom);
5897: $email = &unescape($email);
5898: @rules = map {&unescape($_);} (@rules);
5899: eval {
5900: local($SIG{__DIE__})='DEFAULT';
1.397 raeburn 5901: $outcome = &localenroll::selfcreate_check($udom,$email,\@rules,\%rulecheck);
1.396 raeburn 5902: };
5903: if (!$@) {
5904: if ($outcome eq 'ok') {
5905: my $result='';
5906: foreach my $key (keys(%rulecheck)) {
5907: $result.=&escape($key).'='.&Apache::lonnet::freeze_escape($rulecheck{$key}).'&';
5908: }
5909: &Reply($client,\$result,$userinput);
5910: } else {
5911: &Reply($client,"error\n", $userinput);
5912: }
5913: } else {
5914: &Failure($client,"unknown_cmd\n",$userinput);
5915: }
5916: }
1.397 raeburn 5917: ®ister_handler("instselfcreatecheck",\&institutional_selfcreate_check,0,1,0);
1.396 raeburn 5918:
1.317 raeburn 5919: # Get domain specific conditions for import of student photographs to a course
5920: #
5921: # Retrieves information from photo_permission subroutine in localenroll.
5922: # Returns outcome (ok) if no processing errors, and whether course owner is
5923: # required to accept conditions of use (yes/no).
5924: #
5925: #
5926: sub photo_permission_handler {
5927: my ($cmd, $tail, $client) = @_;
5928: my $userinput = "$cmd:$tail";
5929: my $cdom = $tail;
5930: my ($perm_reqd,$conditions);
1.320 albertel 5931: my $outcome;
5932: eval {
5933: local($SIG{__DIE__})='DEFAULT';
5934: $outcome = &localenroll::photo_permission($cdom,\$perm_reqd,
5935: \$conditions);
5936: };
5937: if (!$@) {
5938: &Reply($client, &escape($outcome.':'.$perm_reqd.':'. $conditions)."\n",
5939: $userinput);
5940: } else {
5941: &Failure($client,"unknown_cmd\n",$userinput);
5942: }
5943: return 1;
1.317 raeburn 5944: }
5945: ®ister_handler("autophotopermission",\&photo_permission_handler,0,1,0);
5946:
5947: #
5948: # Checks if student photo is available for a user in the domain, in the user's
5949: # directory (in /userfiles/internal/studentphoto.jpg).
5950: # Uses localstudentphoto:fetch() to ensure there is an up to date copy of
5951: # the student's photo.
5952:
5953: sub photo_check_handler {
5954: my ($cmd, $tail, $client) = @_;
5955: my $userinput = "$cmd:$tail";
5956: my ($udom,$uname,$pid) = split(/:/,$tail);
5957: $udom = &unescape($udom);
5958: $uname = &unescape($uname);
5959: $pid = &unescape($pid);
5960: my $path=&propath($udom,$uname).'/userfiles/internal/';
5961: if (!-e $path) {
5962: &mkpath($path);
5963: }
5964: my $response;
5965: my $result = &localstudentphoto::fetch($udom,$uname,$pid,\$response);
5966: $result .= ':'.$response;
5967: &Reply($client, &escape($result)."\n",$userinput);
1.320 albertel 5968: return 1;
1.317 raeburn 5969: }
5970: ®ister_handler("autophotocheck",\&photo_check_handler,0,1,0);
5971:
5972: #
5973: # Retrieve information from localenroll about whether to provide a button
5974: # for users who have enbled import of student photos to initiate an
5975: # update of photo files for registered students. Also include
5976: # comment to display alongside button.
5977:
5978: sub photo_choice_handler {
5979: my ($cmd, $tail, $client) = @_;
5980: my $userinput = "$cmd:$tail";
5981: my $cdom = &unescape($tail);
1.320 albertel 5982: my ($update,$comment);
5983: eval {
5984: local($SIG{__DIE__})='DEFAULT';
5985: ($update,$comment) = &localenroll::manager_photo_update($cdom);
5986: };
5987: if (!$@) {
5988: &Reply($client,&escape($update).':'.&escape($comment)."\n",$userinput);
5989: } else {
5990: &Failure($client,"unknown_cmd\n",$userinput);
5991: }
5992: return 1;
1.317 raeburn 5993: }
5994: ®ister_handler("autophotochoice",\&photo_choice_handler,0,1,0);
5995:
1.265 albertel 5996: #
5997: # Gets a student's photo to exist (in the correct image type) in the user's
5998: # directory.
5999: # Formal Parameters:
6000: # $cmd - The command request that got us dispatched.
6001: # $tail - A colon separated set of words that will be split into:
6002: # $domain - student's domain
6003: # $uname - student username
6004: # $type - image type desired
6005: # $client - The socket open on the client.
6006: # Returns:
6007: # 1 - continue processing.
1.317 raeburn 6008:
1.265 albertel 6009: sub student_photo_handler {
6010: my ($cmd, $tail, $client) = @_;
1.317 raeburn 6011: my ($domain,$uname,$ext,$type) = split(/:/, $tail);
1.265 albertel 6012:
1.317 raeburn 6013: my $path=&propath($domain,$uname). '/userfiles/internal/';
6014: my $filename = 'studentphoto.'.$ext;
6015: if ($type eq 'thumbnail') {
6016: $filename = 'studentphoto_tn.'.$ext;
6017: }
6018: if (-e $path.$filename) {
1.265 albertel 6019: &Reply($client,"ok\n","$cmd:$tail");
6020: return 1;
6021: }
6022: &mkpath($path);
1.317 raeburn 6023: my $file;
6024: if ($type eq 'thumbnail') {
1.320 albertel 6025: eval {
6026: local($SIG{__DIE__})='DEFAULT';
6027: $file=&localstudentphoto::fetch_thumbnail($domain,$uname);
6028: };
1.317 raeburn 6029: } else {
6030: $file=&localstudentphoto::fetch($domain,$uname);
6031: }
1.265 albertel 6032: if (!$file) {
6033: &Failure($client,"unavailable\n","$cmd:$tail");
6034: return 1;
6035: }
1.317 raeburn 6036: if (!-e $path.$filename) { &convert_photo($file,$path.$filename); }
6037: if (-e $path.$filename) {
1.265 albertel 6038: &Reply($client,"ok\n","$cmd:$tail");
6039: return 1;
6040: }
6041: &Failure($client,"unable_to_convert\n","$cmd:$tail");
6042: return 1;
6043: }
6044: ®ister_handler("studentphoto", \&student_photo_handler, 0, 1, 0);
1.246 foxr 6045:
1.361 raeburn 6046: sub inst_usertypes_handler {
6047: my ($cmd, $domain, $client) = @_;
6048: my $res;
6049: my $userinput = $cmd.":".$domain; # For logging purposes.
1.370 albertel 6050: my (%typeshash,@order,$result);
6051: eval {
6052: local($SIG{__DIE__})='DEFAULT';
6053: $result=&localenroll::inst_usertypes($domain,\%typeshash,\@order);
6054: };
6055: if ($result eq 'ok') {
1.361 raeburn 6056: if (keys(%typeshash) > 0) {
6057: foreach my $key (keys(%typeshash)) {
6058: $res.=&escape($key).'='.&escape($typeshash{$key}).'&';
6059: }
6060: }
6061: $res=~s/\&$//;
6062: $res .= ':';
6063: if (@order > 0) {
6064: foreach my $item (@order) {
6065: $res .= &escape($item).'&';
6066: }
6067: }
6068: $res=~s/\&$//;
6069: }
1.387 albertel 6070: &Reply($client, \$res, $userinput);
1.361 raeburn 6071: return 1;
6072: }
6073: ®ister_handler("inst_usertypes", \&inst_usertypes_handler, 0, 1, 0);
6074:
1.264 albertel 6075: # mkpath makes all directories for a file, expects an absolute path with a
6076: # file or a trailing / if just a dir is passed
6077: # returns 1 on success 0 on failure
6078: sub mkpath {
6079: my ($file)=@_;
6080: my @parts=split(/\//,$file,-1);
6081: my $now=$parts[0].'/'.$parts[1].'/'.$parts[2];
6082: for (my $i=3;$i<= ($#parts-1);$i++) {
1.265 albertel 6083: $now.='/'.$parts[$i];
1.264 albertel 6084: if (!-e $now) {
6085: if (!mkdir($now,0770)) { return 0; }
6086: }
6087: }
6088: return 1;
6089: }
6090:
1.207 foxr 6091: #---------------------------------------------------------------
6092: #
6093: # Getting, decoding and dispatching requests:
6094: #
6095: #
6096: # Get a Request:
6097: # Gets a Request message from the client. The transaction
6098: # is defined as a 'line' of text. We remove the new line
6099: # from the text line.
1.226 foxr 6100: #
1.211 albertel 6101: sub get_request {
1.207 foxr 6102: my $input = <$client>;
6103: chomp($input);
1.226 foxr 6104:
1.234 foxr 6105: &Debug("get_request: Request = $input\n");
1.207 foxr 6106:
6107: &status('Processing '.$clientname.':'.$input);
6108:
6109: return $input;
6110: }
1.212 foxr 6111: #---------------------------------------------------------------
6112: #
6113: # Process a request. This sub should shrink as each action
6114: # gets farmed out into a separat sub that is registered
6115: # with the dispatch hash.
6116: #
6117: # Parameters:
6118: # user_input - The request received from the client (lonc).
6119: # Returns:
6120: # true to keep processing, false if caller should exit.
6121: #
6122: sub process_request {
6123: my ($userinput) = @_; # Easier for now to break style than to
6124: # fix all the userinput -> user_input.
6125: my $wasenc = 0; # True if request was encrypted.
6126: # ------------------------------------------------------------ See if encrypted
1.322 albertel 6127: # for command
6128: # sethost:<server>
6129: # <command>:<args>
6130: # we just send it to the processor
6131: # for
6132: # sethost:<server>:<command>:<args>
6133: # we do the implict set host and then do the command
6134: if ($userinput =~ /^sethost:/) {
6135: (my $cmd,my $newid,$userinput) = split(':',$userinput,3);
6136: if (defined($userinput)) {
6137: &sethost("$cmd:$newid");
6138: } else {
6139: $userinput = "$cmd:$newid";
6140: }
6141: }
6142:
1.212 foxr 6143: if ($userinput =~ /^enc/) {
6144: $userinput = decipher($userinput);
6145: $wasenc=1;
6146: if(!$userinput) { # Cipher not defined.
1.251 foxr 6147: &Failure($client, "error: Encrypted data without negotated key\n");
1.212 foxr 6148: return 0;
6149: }
6150: }
6151: Debug("process_request: $userinput\n");
6152:
1.213 foxr 6153: #
6154: # The 'correct way' to add a command to lond is now to
6155: # write a sub to execute it and Add it to the command dispatch
6156: # hash via a call to register_handler.. The comments to that
6157: # sub should give you enough to go on to show how to do this
6158: # along with the examples that are building up as this code
6159: # is getting refactored. Until all branches of the
6160: # if/elseif monster below have been factored out into
6161: # separate procesor subs, if the dispatch hash is missing
6162: # the command keyword, we will fall through to the remainder
6163: # of the if/else chain below in order to keep this thing in
6164: # working order throughout the transmogrification.
6165:
6166: my ($command, $tail) = split(/:/, $userinput, 2);
6167: chomp($command);
6168: chomp($tail);
6169: $tail =~ s/(\r)//; # This helps people debugging with e.g. telnet.
1.214 foxr 6170: $command =~ s/(\r)//; # And this too for parameterless commands.
6171: if(!$tail) {
6172: $tail =""; # defined but blank.
6173: }
1.213 foxr 6174:
6175: &Debug("Command received: $command, encoded = $wasenc");
6176:
6177: if(defined $Dispatcher{$command}) {
6178:
6179: my $dispatch_info = $Dispatcher{$command};
6180: my $handler = $$dispatch_info[0];
6181: my $need_encode = $$dispatch_info[1];
6182: my $client_types = $$dispatch_info[2];
6183: Debug("Matched dispatch hash: mustencode: $need_encode "
6184: ."ClientType $client_types");
6185:
6186: # Validate the request:
6187:
6188: my $ok = 1;
6189: my $requesterprivs = 0;
6190: if(&isClient()) {
6191: $requesterprivs |= $CLIENT_OK;
6192: }
6193: if(&isManager()) {
6194: $requesterprivs |= $MANAGER_OK;
6195: }
6196: if($need_encode && (!$wasenc)) {
6197: Debug("Must encode but wasn't: $need_encode $wasenc");
6198: $ok = 0;
6199: }
6200: if(($client_types & $requesterprivs) == 0) {
6201: Debug("Client not privileged to do this operation");
6202: $ok = 0;
6203: }
6204:
6205: if($ok) {
6206: Debug("Dispatching to handler $command $tail");
6207: my $keep_going = &$handler($command, $tail, $client);
6208: return $keep_going;
6209: } else {
6210: Debug("Refusing to dispatch because client did not match requirements");
6211: Failure($client, "refused\n", $userinput);
6212: return 1;
6213: }
6214:
6215: }
6216:
1.262 foxr 6217: print $client "unknown_cmd\n";
1.212 foxr 6218: # -------------------------------------------------------------------- complete
6219: Debug("process_request - returning 1");
6220: return 1;
6221: }
1.207 foxr 6222: #
6223: # Decipher encoded traffic
6224: # Parameters:
6225: # input - Encoded data.
6226: # Returns:
6227: # Decoded data or undef if encryption key was not yet negotiated.
6228: # Implicit input:
6229: # cipher - This global holds the negotiated encryption key.
6230: #
1.211 albertel 6231: sub decipher {
1.207 foxr 6232: my ($input) = @_;
6233: my $output = '';
1.212 foxr 6234:
6235:
1.207 foxr 6236: if($cipher) {
6237: my($enc, $enclength, $encinput) = split(/:/, $input);
6238: for(my $encidx = 0; $encidx < length($encinput); $encidx += 16) {
6239: $output .=
6240: $cipher->decrypt(pack("H16", substr($encinput, $encidx, 16)));
6241: }
6242: return substr($output, 0, $enclength);
6243: } else {
6244: return undef;
6245: }
6246: }
6247:
6248: #
6249: # Register a command processor. This function is invoked to register a sub
6250: # to process a request. Once registered, the ProcessRequest sub can automatically
6251: # dispatch requests to an appropriate sub, and do the top level validity checking
6252: # as well:
6253: # - Is the keyword recognized.
6254: # - Is the proper client type attempting the request.
6255: # - Is the request encrypted if it has to be.
6256: # Parameters:
6257: # $request_name - Name of the request being registered.
6258: # This is the command request that will match
6259: # against the hash keywords to lookup the information
6260: # associated with the dispatch information.
6261: # $procedure - Reference to a sub to call to process the request.
6262: # All subs get called as follows:
6263: # Procedure($cmd, $tail, $replyfd, $key)
6264: # $cmd - the actual keyword that invoked us.
6265: # $tail - the tail of the request that invoked us.
6266: # $replyfd- File descriptor connected to the client
6267: # $must_encode - True if the request must be encoded to be good.
6268: # $client_ok - True if it's ok for a client to request this.
6269: # $manager_ok - True if it's ok for a manager to request this.
6270: # Side effects:
6271: # - On success, the Dispatcher hash has an entry added for the key $RequestName
6272: # - On failure, the program will die as it's a bad internal bug to try to
6273: # register a duplicate command handler.
6274: #
1.211 albertel 6275: sub register_handler {
1.212 foxr 6276: my ($request_name,$procedure,$must_encode, $client_ok,$manager_ok) = @_;
1.207 foxr 6277:
6278: # Don't allow duplication#
6279:
6280: if (defined $Dispatcher{$request_name}) {
6281: die "Attempting to define a duplicate request handler for $request_name\n";
6282: }
6283: # Build the client type mask:
6284:
6285: my $client_type_mask = 0;
6286: if($client_ok) {
6287: $client_type_mask |= $CLIENT_OK;
6288: }
6289: if($manager_ok) {
6290: $client_type_mask |= $MANAGER_OK;
6291: }
6292:
6293: # Enter the hash:
6294:
6295: my @entry = ($procedure, $must_encode, $client_type_mask);
6296:
6297: $Dispatcher{$request_name} = \@entry;
6298:
6299: }
6300:
6301:
6302: #------------------------------------------------------------------
6303:
6304:
6305:
6306:
1.141 foxr 6307: #
1.96 foxr 6308: # Convert an error return code from lcpasswd to a string value.
6309: #
6310: sub lcpasswdstrerror {
6311: my $ErrorCode = shift;
1.97 foxr 6312: if(($ErrorCode < 0) || ($ErrorCode > $lastpwderror)) {
1.96 foxr 6313: return "lcpasswd Unrecognized error return value ".$ErrorCode;
6314: } else {
1.98 foxr 6315: return $passwderrors[$ErrorCode];
1.96 foxr 6316: }
6317: }
6318:
1.23 harris41 6319: # grabs exception and records it to log before exiting
6320: sub catchexception {
1.27 albertel 6321: my ($error)=@_;
1.25 www 6322: $SIG{'QUIT'}='DEFAULT';
6323: $SIG{__DIE__}='DEFAULT';
1.165 albertel 6324: &status("Catching exception");
1.190 albertel 6325: &logthis("<font color='red'>CRITICAL: "
1.373 albertel 6326: ."ABNORMAL EXIT. Child $$ for server ".$perlvar{'lonHostID'}." died through "
1.27 albertel 6327: ."a crash with this error msg->[$error]</font>");
1.57 www 6328: &logthis('Famous last words: '.$status.' - '.$lastlog);
1.27 albertel 6329: if ($client) { print $client "error: $error\n"; }
1.59 www 6330: $server->close();
1.27 albertel 6331: die($error);
1.23 harris41 6332: }
1.63 www 6333: sub timeout {
1.165 albertel 6334: &status("Handling Timeout");
1.190 albertel 6335: &logthis("<font color='red'>CRITICAL: TIME OUT ".$$."</font>");
1.63 www 6336: &catchexception('Timeout');
6337: }
1.22 harris41 6338: # -------------------------------- Set signal handlers to record abnormal exits
6339:
1.226 foxr 6340:
1.22 harris41 6341: $SIG{'QUIT'}=\&catchexception;
6342: $SIG{__DIE__}=\&catchexception;
6343:
1.81 matthew 6344: # ---------------------------------- Read loncapa_apache.conf and loncapa.conf
1.95 harris41 6345: &status("Read loncapa.conf and loncapa_apache.conf");
6346: my $perlvarref=LONCAPA::Configuration::read_conf('loncapa.conf');
1.141 foxr 6347: %perlvar=%{$perlvarref};
1.80 harris41 6348: undef $perlvarref;
1.19 www 6349:
1.35 harris41 6350: # ----------------------------- Make sure this process is running from user=www
6351: my $wwwid=getpwnam('www');
6352: if ($wwwid!=$<) {
1.134 albertel 6353: my $emailto="$perlvar{'lonAdmEMail'},$perlvar{'lonSysEMail'}";
6354: my $subj="LON: $currenthostid User ID mismatch";
1.37 harris41 6355: system("echo 'User ID mismatch. lond must be run as user www.' |\
1.35 harris41 6356: mailto $emailto -s '$subj' > /dev/null");
6357: exit 1;
6358: }
6359:
1.19 www 6360: # --------------------------------------------- Check if other instance running
6361:
6362: my $pidfile="$perlvar{'lonDaemons'}/logs/lond.pid";
6363:
6364: if (-e $pidfile) {
6365: my $lfh=IO::File->new("$pidfile");
6366: my $pide=<$lfh>;
6367: chomp($pide);
1.29 harris41 6368: if (kill 0 => $pide) { die "already running"; }
1.19 www 6369: }
1.1 albertel 6370:
6371: # ------------------------------------------------------------- Read hosts file
6372:
6373:
6374:
6375: # establish SERVER socket, bind and listen.
6376: $server = IO::Socket::INET->new(LocalPort => $perlvar{'londPort'},
6377: Type => SOCK_STREAM,
6378: Proto => 'tcp',
1.469 foxr 6379: ReuseAddr => 1,
1.1 albertel 6380: Listen => 10 )
1.29 harris41 6381: or die "making socket: $@\n";
1.1 albertel 6382:
6383: # --------------------------------------------------------- Do global variables
6384:
6385: # global variables
6386:
1.134 albertel 6387: my %children = (); # keys are current child process IDs
1.1 albertel 6388:
6389: sub REAPER { # takes care of dead children
6390: $SIG{CHLD} = \&REAPER;
1.165 albertel 6391: &status("Handling child death");
1.178 foxr 6392: my $pid;
6393: do {
6394: $pid = waitpid(-1,&WNOHANG());
6395: if (defined($children{$pid})) {
6396: &logthis("Child $pid died");
6397: delete($children{$pid});
1.183 albertel 6398: } elsif ($pid > 0) {
1.178 foxr 6399: &logthis("Unknown Child $pid died");
6400: }
6401: } while ( $pid > 0 );
6402: foreach my $child (keys(%children)) {
6403: $pid = waitpid($child,&WNOHANG());
6404: if ($pid > 0) {
6405: &logthis("Child $child - $pid looks like we missed it's death");
6406: delete($children{$pid});
6407: }
1.176 albertel 6408: }
1.165 albertel 6409: &status("Finished Handling child death");
1.1 albertel 6410: }
6411:
6412: sub HUNTSMAN { # signal handler for SIGINT
1.165 albertel 6413: &status("Killing children (INT)");
1.1 albertel 6414: local($SIG{CHLD}) = 'IGNORE'; # we're going to kill our children
6415: kill 'INT' => keys %children;
1.59 www 6416: &logthis("Free socket: ".shutdown($server,2)); # free up socket
1.1 albertel 6417: my $execdir=$perlvar{'lonDaemons'};
6418: unlink("$execdir/logs/lond.pid");
1.190 albertel 6419: &logthis("<font color='red'>CRITICAL: Shutting down</font>");
1.165 albertel 6420: &status("Done killing children");
1.1 albertel 6421: exit; # clean up with dignity
6422: }
6423:
6424: sub HUPSMAN { # signal handler for SIGHUP
6425: local($SIG{CHLD}) = 'IGNORE'; # we're going to kill our children
1.165 albertel 6426: &status("Killing children for restart (HUP)");
1.1 albertel 6427: kill 'INT' => keys %children;
1.59 www 6428: &logthis("Free socket: ".shutdown($server,2)); # free up socket
1.190 albertel 6429: &logthis("<font color='red'>CRITICAL: Restarting</font>");
1.134 albertel 6430: my $execdir=$perlvar{'lonDaemons'};
1.30 harris41 6431: unlink("$execdir/logs/lond.pid");
1.165 albertel 6432: &status("Restarting self (HUP)");
1.1 albertel 6433: exec("$execdir/lond"); # here we go again
6434: }
6435:
1.144 foxr 6436: #
1.148 foxr 6437: # Reload the Apache daemon's state.
1.150 foxr 6438: # This is done by invoking /home/httpd/perl/apachereload
6439: # a setuid perl script that can be root for us to do this job.
1.148 foxr 6440: #
6441: sub ReloadApache {
1.473 raeburn 6442: # --------------------------- Handle case of another apachereload process (locking)
1.474 raeburn 6443: if (&LONCAPA::try_to_lock('/tmp/lock_apachereload')) {
6444: my $execdir = $perlvar{'lonDaemons'};
6445: my $script = $execdir."/apachereload";
6446: system($script);
6447: unlink('/tmp/lock_apachereload'); # Remove the lock file.
6448: }
1.148 foxr 6449: }
6450:
6451: #
1.144 foxr 6452: # Called in response to a USR2 signal.
6453: # - Reread hosts.tab
6454: # - All children connected to hosts that were removed from hosts.tab
6455: # are killed via SIGINT
6456: # - All children connected to previously existing hosts are sent SIGUSR1
6457: # - Our internal hosts hash is updated to reflect the new contents of
6458: # hosts.tab causing connections from hosts added to hosts.tab to
6459: # now be honored.
6460: #
6461: sub UpdateHosts {
1.165 albertel 6462: &status("Reload hosts.tab");
1.147 foxr 6463: logthis('<font color="blue"> Updating connections </font>');
1.148 foxr 6464: #
6465: # The %children hash has the set of IP's we currently have children
6466: # on. These need to be matched against records in the hosts.tab
6467: # Any ip's no longer in the table get killed off they correspond to
6468: # either dropped or changed hosts. Note that the re-read of the table
6469: # will take care of new and changed hosts as connections come into being.
6470:
1.371 albertel 6471: &Apache::lonnet::reset_hosts_info();
1.148 foxr 6472:
1.368 albertel 6473: foreach my $child (keys(%children)) {
1.148 foxr 6474: my $childip = $children{$child};
1.374 albertel 6475: if ($childip ne '127.0.0.1'
6476: && !defined(&Apache::lonnet::get_hosts_from_ip($childip))) {
1.149 foxr 6477: logthis('<font color="blue"> UpdateHosts killing child '
6478: ." $child for ip $childip </font>");
1.148 foxr 6479: kill('INT', $child);
1.149 foxr 6480: } else {
6481: logthis('<font color="green"> keeping child for ip '
6482: ." $childip (pid=$child) </font>");
1.148 foxr 6483: }
6484: }
6485: ReloadApache;
1.165 albertel 6486: &status("Finished reloading hosts.tab");
1.144 foxr 6487: }
6488:
1.148 foxr 6489:
1.57 www 6490: sub checkchildren {
1.165 albertel 6491: &status("Checking on the children (sending signals)");
1.57 www 6492: &initnewstatus();
6493: &logstatus();
6494: &logthis('Going to check on the children');
1.134 albertel 6495: my $docdir=$perlvar{'lonDocRoot'};
1.61 harris41 6496: foreach (sort keys %children) {
1.221 albertel 6497: #sleep 1;
1.57 www 6498: unless (kill 'USR1' => $_) {
6499: &logthis ('Child '.$_.' is dead');
6500: &logstatus($$.' is dead');
1.221 albertel 6501: delete($children{$_});
1.57 www 6502: }
1.61 harris41 6503: }
1.63 www 6504: sleep 5;
1.212 foxr 6505: $SIG{ALRM} = sub { Debug("timeout");
6506: die "timeout"; };
1.113 albertel 6507: $SIG{__DIE__} = 'DEFAULT';
1.165 albertel 6508: &status("Checking on the children (waiting for reports)");
1.63 www 6509: foreach (sort keys %children) {
6510: unless (-e "$docdir/lon-status/londchld/$_.txt") {
1.113 albertel 6511: eval {
6512: alarm(300);
1.63 www 6513: &logthis('Child '.$_.' did not respond');
1.67 albertel 6514: kill 9 => $_;
1.131 albertel 6515: #$emailto="$perlvar{'lonAdmEMail'},$perlvar{'lonSysEMail'}";
6516: #$subj="LON: $currenthostid killed lond process $_";
6517: #my $result=`echo 'Killed lond process $_.' | mailto $emailto -s '$subj' > /dev/null`;
6518: #$execdir=$perlvar{'lonDaemons'};
6519: #$result=`/bin/cp $execdir/logs/lond.log $execdir/logs/lond.log.$_`;
1.221 albertel 6520: delete($children{$_});
1.113 albertel 6521: alarm(0);
6522: }
1.63 www 6523: }
6524: }
1.113 albertel 6525: $SIG{ALRM} = 'DEFAULT';
1.155 albertel 6526: $SIG{__DIE__} = \&catchexception;
1.165 albertel 6527: &status("Finished checking children");
1.221 albertel 6528: &logthis('Finished Checking children');
1.57 www 6529: }
6530:
1.1 albertel 6531: # --------------------------------------------------------------------- Logging
6532:
6533: sub logthis {
6534: my $message=shift;
6535: my $execdir=$perlvar{'lonDaemons'};
6536: my $fh=IO::File->new(">>$execdir/logs/lond.log");
6537: my $now=time;
6538: my $local=localtime($now);
1.58 www 6539: $lastlog=$local.': '.$message;
1.1 albertel 6540: print $fh "$local ($$): $message\n";
6541: }
6542:
1.77 foxr 6543: # ------------------------- Conditional log if $DEBUG true.
6544: sub Debug {
6545: my $message = shift;
6546: if($DEBUG) {
6547: &logthis($message);
6548: }
6549: }
1.161 foxr 6550:
6551: #
6552: # Sub to do replies to client.. this gives a hook for some
6553: # debug tracing too:
6554: # Parameters:
6555: # fd - File open on client.
6556: # reply - Text to send to client.
6557: # request - Original request from client.
6558: #
6559: sub Reply {
1.192 foxr 6560: my ($fd, $reply, $request) = @_;
1.387 albertel 6561: if (ref($reply)) {
6562: print $fd $$reply;
6563: print $fd "\n";
6564: if ($DEBUG) { Debug("Request was $request Reply was $$reply"); }
6565: } else {
6566: print $fd $reply;
6567: if ($DEBUG) { Debug("Request was $request Reply was $reply"); }
6568: }
1.212 foxr 6569: $Transactions++;
6570: }
6571:
6572:
6573: #
6574: # Sub to report a failure.
6575: # This function:
6576: # - Increments the failure statistic counters.
6577: # - Invokes Reply to send the error message to the client.
6578: # Parameters:
6579: # fd - File descriptor open on the client
6580: # reply - Reply text to emit.
6581: # request - The original request message (used by Reply
6582: # to debug if that's enabled.
6583: # Implicit outputs:
6584: # $Failures- The number of failures is incremented.
6585: # Reply (invoked here) sends a message to the
6586: # client:
6587: #
6588: sub Failure {
6589: my $fd = shift;
6590: my $reply = shift;
6591: my $request = shift;
6592:
6593: $Failures++;
6594: Reply($fd, $reply, $request); # That's simple eh?
1.161 foxr 6595: }
1.57 www 6596: # ------------------------------------------------------------------ Log status
6597:
6598: sub logstatus {
1.178 foxr 6599: &status("Doing logging");
6600: my $docdir=$perlvar{'lonDocRoot'};
6601: {
6602: my $fh=IO::File->new(">$docdir/lon-status/londchld/$$.txt");
1.200 matthew 6603: print $fh $status."\n".$lastlog."\n".time."\n$keymode";
1.178 foxr 6604: $fh->close();
6605: }
1.221 albertel 6606: &status("Finished $$.txt");
6607: {
6608: open(LOG,">>$docdir/lon-status/londstatus.txt");
6609: flock(LOG,LOCK_EX);
6610: print LOG $$."\t".$clientname."\t".$currenthostid."\t"
6611: .$status."\t".$lastlog."\t $keymode\n";
1.275 albertel 6612: flock(LOG,LOCK_UN);
1.221 albertel 6613: close(LOG);
6614: }
1.178 foxr 6615: &status("Finished logging");
1.57 www 6616: }
6617:
6618: sub initnewstatus {
6619: my $docdir=$perlvar{'lonDocRoot'};
6620: my $fh=IO::File->new(">$docdir/lon-status/londstatus.txt");
1.460 foxr 6621: my $now=time();
1.57 www 6622: my $local=localtime($now);
6623: print $fh "LOND status $local - parent $$\n\n";
1.64 www 6624: opendir(DIR,"$docdir/lon-status/londchld");
1.134 albertel 6625: while (my $filename=readdir(DIR)) {
1.64 www 6626: unlink("$docdir/lon-status/londchld/$filename");
6627: }
6628: closedir(DIR);
1.57 www 6629: }
6630:
6631: # -------------------------------------------------------------- Status setting
6632:
6633: sub status {
6634: my $what=shift;
6635: my $now=time;
6636: my $local=localtime($now);
1.178 foxr 6637: $status=$local.': '.$what;
6638: $0='lond: '.$what.' '.$local;
1.57 www 6639: }
1.11 www 6640:
1.13 www 6641: # -------------------------------------------------------------- Talk to lonsql
6642:
1.234 foxr 6643: sub sql_reply {
1.12 harris41 6644: my ($cmd)=@_;
1.234 foxr 6645: my $answer=&sub_sql_reply($cmd);
6646: if ($answer eq 'con_lost') { $answer=&sub_sql_reply($cmd); }
1.12 harris41 6647: return $answer;
6648: }
6649:
1.234 foxr 6650: sub sub_sql_reply {
1.12 harris41 6651: my ($cmd)=@_;
6652: my $unixsock="mysqlsock";
6653: my $peerfile="$perlvar{'lonSockDir'}/$unixsock";
6654: my $sclient=IO::Socket::UNIX->new(Peer =>"$peerfile",
6655: Type => SOCK_STREAM,
6656: Timeout => 10)
6657: or return "con_lost";
1.319 www 6658: print $sclient "$cmd:$currentdomainid\n";
1.12 harris41 6659: my $answer=<$sclient>;
6660: chomp($answer);
6661: if (!$answer) { $answer="con_lost"; }
6662: return $answer;
6663: }
6664:
1.1 albertel 6665: # --------------------------------------- Is this the home server of an author?
1.11 www 6666:
1.1 albertel 6667: sub ishome {
6668: my $author=shift;
6669: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
6670: my ($udom,$uname)=split(/\//,$author);
6671: my $proname=propath($udom,$uname);
6672: if (-e $proname) {
6673: return 'owner';
6674: } else {
6675: return 'not_owner';
6676: }
6677: }
6678:
6679: # ======================================================= Continue main program
6680: # ---------------------------------------------------- Fork once and dissociate
6681:
1.134 albertel 6682: my $fpid=fork;
1.1 albertel 6683: exit if $fpid;
1.29 harris41 6684: die "Couldn't fork: $!" unless defined ($fpid);
1.1 albertel 6685:
1.29 harris41 6686: POSIX::setsid() or die "Can't start new session: $!";
1.1 albertel 6687:
6688: # ------------------------------------------------------- Write our PID on disk
6689:
1.134 albertel 6690: my $execdir=$perlvar{'lonDaemons'};
1.1 albertel 6691: open (PIDSAVE,">$execdir/logs/lond.pid");
6692: print PIDSAVE "$$\n";
6693: close(PIDSAVE);
1.190 albertel 6694: &logthis("<font color='red'>CRITICAL: ---------- Starting ----------</font>");
1.57 www 6695: &status('Starting');
1.1 albertel 6696:
1.106 foxr 6697:
1.1 albertel 6698:
6699: # ----------------------------------------------------- Install signal handlers
6700:
1.57 www 6701:
1.1 albertel 6702: $SIG{CHLD} = \&REAPER;
6703: $SIG{INT} = $SIG{TERM} = \&HUNTSMAN;
6704: $SIG{HUP} = \&HUPSMAN;
1.57 www 6705: $SIG{USR1} = \&checkchildren;
1.144 foxr 6706: $SIG{USR2} = \&UpdateHosts;
1.106 foxr 6707:
1.148 foxr 6708: # Read the host hashes:
1.368 albertel 6709: &Apache::lonnet::load_hosts_tab();
1.447 raeburn 6710: my %iphost = &Apache::lonnet::get_iphost(1);
1.106 foxr 6711:
1.480 raeburn 6712: $dist=`$perlvar{'lonDaemons'}/distprobe`;
1.286 albertel 6713:
1.471 raeburn 6714: my $arch = `uname -i`;
1.475 raeburn 6715: chomp($arch);
1.471 raeburn 6716: if ($arch eq 'unknown') {
6717: $arch = `uname -m`;
1.475 raeburn 6718: chomp($arch);
1.471 raeburn 6719: }
6720:
1.106 foxr 6721: # --------------------------------------------------------------
6722: # Accept connections. When a connection comes in, it is validated
6723: # and if good, a child process is created to process transactions
6724: # along the connection.
6725:
1.1 albertel 6726: while (1) {
1.165 albertel 6727: &status('Starting accept');
1.106 foxr 6728: $client = $server->accept() or next;
1.165 albertel 6729: &status('Accepted '.$client.' off to spawn');
1.386 albertel 6730: make_new_child($client);
1.165 albertel 6731: &status('Finished spawning');
1.1 albertel 6732: }
6733:
1.212 foxr 6734: sub make_new_child {
6735: my $pid;
6736: # my $cipher; # Now global
6737: my $sigset;
1.178 foxr 6738:
1.212 foxr 6739: $client = shift;
6740: &status('Starting new child '.$client);
6741: &logthis('<font color="green"> Attempting to start child ('.$client.
6742: ")</font>");
6743: # block signal for fork
6744: $sigset = POSIX::SigSet->new(SIGINT);
6745: sigprocmask(SIG_BLOCK, $sigset)
6746: or die "Can't block SIGINT for fork: $!\n";
1.178 foxr 6747:
1.212 foxr 6748: die "fork: $!" unless defined ($pid = fork);
1.178 foxr 6749:
1.212 foxr 6750: $client->sockopt(SO_KEEPALIVE, 1); # Enable monitoring of
6751: # connection liveness.
1.178 foxr 6752:
1.212 foxr 6753: #
6754: # Figure out who we're talking to so we can record the peer in
6755: # the pid hash.
6756: #
6757: my $caller = getpeername($client);
6758: my ($port,$iaddr);
6759: if (defined($caller) && length($caller) > 0) {
6760: ($port,$iaddr)=unpack_sockaddr_in($caller);
6761: } else {
6762: &logthis("Unable to determine who caller was, getpeername returned nothing");
6763: }
6764: if (defined($iaddr)) {
6765: $clientip = inet_ntoa($iaddr);
6766: Debug("Connected with $clientip");
6767: } else {
6768: &logthis("Unable to determine clientip");
6769: $clientip='Unavailable';
6770: }
6771:
6772: if ($pid) {
6773: # Parent records the child's birth and returns.
6774: sigprocmask(SIG_UNBLOCK, $sigset)
6775: or die "Can't unblock SIGINT for fork: $!\n";
6776: $children{$pid} = $clientip;
6777: &status('Started child '.$pid);
1.462 foxr 6778: close($client);
1.212 foxr 6779: return;
6780: } else {
6781: # Child can *not* return from this subroutine.
6782: $SIG{INT} = 'DEFAULT'; # make SIGINT kill us as it did before
6783: $SIG{CHLD} = 'DEFAULT'; #make this default so that pwauth returns
6784: #don't get intercepted
6785: $SIG{USR1}= \&logstatus;
6786: $SIG{ALRM}= \&timeout;
1.468 foxr 6787: #
6788: # Block sigpipe as it gets thrownon socket disconnect and we want to
6789: # deal with that as a read faiure instead.
6790: #
6791: my $blockset = POSIX::SigSet->new(SIGPIPE);
6792: sigprocmask(SIG_BLOCK, $blockset);
6793:
1.212 foxr 6794: $lastlog='Forked ';
6795: $status='Forked';
1.178 foxr 6796:
1.212 foxr 6797: # unblock signals
6798: sigprocmask(SIG_UNBLOCK, $sigset)
6799: or die "Can't unblock SIGINT for fork: $!\n";
1.178 foxr 6800:
1.212 foxr 6801: # my $tmpsnum=0; # Now global
6802: #---------------------------------------------------- kerberos 5 initialization
6803: &Authen::Krb5::init_context();
1.489.2.16 raeburn 6804:
6805: my $no_ets;
1.489.2.17 raeburn 6806: if ($dist =~ /^(?:centos|rhes|scientific)(\d+)$/) {
1.489.2.16 raeburn 6807: if ($1 >= 7) {
6808: $no_ets = 1;
6809: }
6810: } elsif ($dist =~ /^suse(\d+\.\d+)$/) {
6811: if (($1 eq '9.3') || ($1 >= 12.2)) {
6812: $no_ets = 1;
6813: }
1.489.2.17 raeburn 6814: } elsif ($dist =~ /^sles(\d+)$/) {
6815: if ($1 > 11) {
6816: $no_ets = 1;
6817: }
1.489.2.16 raeburn 6818: } elsif ($dist =~ /^fedora(\d+)$/) {
6819: if ($1 < 7) {
6820: $no_ets = 1;
6821: }
6822: }
6823: unless ($no_ets) {
6824: &Authen::Krb5::init_ets();
6825: }
1.209 albertel 6826:
1.212 foxr 6827: &status('Accepted connection');
6828: # =============================================================================
6829: # do something with the connection
6830: # -----------------------------------------------------------------------------
6831: # see if we know client and 'check' for spoof IP by ineffective challenge
1.178 foxr 6832:
1.278 albertel 6833: my $outsideip=$clientip;
6834: if ($clientip eq '127.0.0.1') {
1.368 albertel 6835: $outsideip=&Apache::lonnet::get_host_ip($perlvar{'lonHostID'});
1.278 albertel 6836: }
1.412 foxr 6837: &ReadManagerTable();
1.368 albertel 6838: my $clientrec=defined(&Apache::lonnet::get_hosts_from_ip($outsideip));
1.278 albertel 6839: my $ismanager=($managers{$outsideip} ne undef);
1.432 raeburn 6840: $clientname = "[unknown]";
1.212 foxr 6841: if($clientrec) { # Establish client type.
6842: $ConnectionType = "client";
1.368 albertel 6843: $clientname = (&Apache::lonnet::get_hosts_from_ip($outsideip))[-1];
1.212 foxr 6844: if($ismanager) {
6845: $ConnectionType = "both";
6846: }
6847: } else {
6848: $ConnectionType = "manager";
1.278 albertel 6849: $clientname = $managers{$outsideip};
1.212 foxr 6850: }
6851: my $clientok;
1.178 foxr 6852:
1.212 foxr 6853: if ($clientrec || $ismanager) {
6854: &status("Waiting for init from $clientip $clientname");
6855: &logthis('<font color="yellow">INFO: Connection, '.
6856: $clientip.
6857: " ($clientname) connection type = $ConnectionType </font>" );
6858: &status("Connecting $clientip ($clientname))");
6859: my $remotereq=<$client>;
6860: chomp($remotereq);
6861: Debug("Got init: $remotereq");
1.337 albertel 6862:
1.212 foxr 6863: if ($remotereq =~ /^init/) {
6864: &sethost("sethost:$perlvar{'lonHostID'}");
6865: #
6866: # If the remote is attempting a local init... give that a try:
6867: #
1.432 raeburn 6868: (my $i, my $inittype, $clientversion) = split(/:/, $remotereq);
1.489.2.4 raeburn 6869: # For LON-CAPA 2.9, the client session will have sent its LON-CAPA
6870: # version when initiating the connection. For LON-CAPA 2.8 and older,
6871: # the version is retrieved from the global %loncaparevs in lonnet.pm.
6872: # $clientversion contains path to keyfile if $inittype eq 'local'
6873: # it's overridden below in this case
6874: $clientversion ||= $Apache::lonnet::loncaparevs{$clientname};
1.209 albertel 6875:
1.212 foxr 6876: # If the connection type is ssl, but I didn't get my
6877: # certificate files yet, then I'll drop back to
6878: # insecure (if allowed).
6879:
6880: if($inittype eq "ssl") {
6881: my ($ca, $cert) = lonssl::CertificateFile;
6882: my $kfile = lonssl::KeyFile;
6883: if((!$ca) ||
6884: (!$cert) ||
6885: (!$kfile)) {
6886: $inittype = ""; # This forces insecure attempt.
6887: &logthis("<font color=\"blue\"> Certificates not "
6888: ."installed -- trying insecure auth</font>");
1.224 foxr 6889: } else { # SSL certificates are in place so
1.212 foxr 6890: } # Leave the inittype alone.
6891: }
6892:
6893: if($inittype eq "local") {
1.432 raeburn 6894: $clientversion = $perlvar{'lonVersion'};
1.212 foxr 6895: my $key = LocalConnection($client, $remotereq);
6896: if($key) {
6897: Debug("Got local key $key");
6898: $clientok = 1;
6899: my $cipherkey = pack("H32", $key);
6900: $cipher = new IDEA($cipherkey);
6901: print $client "ok:local\n";
1.442 www 6902: &logthis('<font color="green">'
1.212 foxr 6903: . "Successful local authentication </font>");
6904: $keymode = "local"
1.178 foxr 6905: } else {
1.212 foxr 6906: Debug("Failed to get local key");
6907: $clientok = 0;
6908: shutdown($client, 3);
6909: close $client;
1.178 foxr 6910: }
1.212 foxr 6911: } elsif ($inittype eq "ssl") {
6912: my $key = SSLConnection($client);
6913: if ($key) {
6914: $clientok = 1;
6915: my $cipherkey = pack("H32", $key);
6916: $cipher = new IDEA($cipherkey);
6917: &logthis('<font color="green">'
6918: ."Successfull ssl authentication with $clientname </font>");
6919: $keymode = "ssl";
6920:
1.178 foxr 6921: } else {
1.212 foxr 6922: $clientok = 0;
6923: close $client;
1.178 foxr 6924: }
1.212 foxr 6925:
6926: } else {
6927: my $ok = InsecureConnection($client);
6928: if($ok) {
6929: $clientok = 1;
6930: &logthis('<font color="green">'
6931: ."Successful insecure authentication with $clientname </font>");
6932: print $client "ok\n";
6933: $keymode = "insecure";
1.178 foxr 6934: } else {
1.212 foxr 6935: &logthis('<font color="yellow">'
6936: ."Attempted insecure connection disallowed </font>");
6937: close $client;
6938: $clientok = 0;
1.178 foxr 6939:
6940: }
6941: }
1.212 foxr 6942: } else {
6943: &logthis(
6944: "<font color='blue'>WARNING: "
6945: ."$clientip failed to initialize: >$remotereq< </font>");
6946: &status('No init '.$clientip);
6947: }
6948:
6949: } else {
6950: &logthis(
6951: "<font color='blue'>WARNING: Unknown client $clientip</font>");
6952: &status('Hung up on '.$clientip);
6953: }
6954:
6955: if ($clientok) {
6956: # ---------------- New known client connecting, could mean machine online again
1.368 albertel 6957: if (&Apache::lonnet::get_host_ip($currenthostid) ne $clientip
1.367 albertel 6958: && $clientip ne '127.0.0.1') {
1.375 albertel 6959: &Apache::lonnet::reconlonc($clientname);
1.212 foxr 6960: }
6961: &logthis("<font color='green'>Established connection: $clientname</font>");
6962: &status('Will listen to '.$clientname);
6963: # ------------------------------------------------------------ Process requests
6964: my $keep_going = 1;
6965: my $user_input;
1.448 raeburn 6966: my $clienthost = &Apache::lonnet::hostname($clientname);
6967: my $clientserverhomeID = &Apache::lonnet::get_server_homeID($clienthost);
6968: $clienthomedom = &Apache::lonnet::host_domain($clientserverhomeID);
1.212 foxr 6969: while(($user_input = get_request) && $keep_going) {
6970: alarm(120);
6971: Debug("Main: Got $user_input\n");
6972: $keep_going = &process_request($user_input);
1.178 foxr 6973: alarm(0);
1.212 foxr 6974: &status('Listening to '.$clientname." ($keymode)");
1.161 foxr 6975: }
1.212 foxr 6976:
1.59 www 6977: # --------------------------------------------- client unknown or fishy, refuse
1.212 foxr 6978: } else {
1.161 foxr 6979: print $client "refused\n";
6980: $client->close();
1.190 albertel 6981: &logthis("<font color='blue'>WARNING: "
1.161 foxr 6982: ."Rejected client $clientip, closing connection</font>");
6983: }
1.212 foxr 6984: }
1.161 foxr 6985:
1.1 albertel 6986: # =============================================================================
1.161 foxr 6987:
1.190 albertel 6988: &logthis("<font color='red'>CRITICAL: "
1.161 foxr 6989: ."Disconnect from $clientip ($clientname)</font>");
6990:
6991:
6992: # this exit is VERY important, otherwise the child will become
6993: # a producer of more and more children, forking yourself into
6994: # process death.
6995: exit;
1.106 foxr 6996:
1.78 foxr 6997: }
1.261 foxr 6998: #
6999: # Determine if a user is an author for the indicated domain.
7000: #
7001: # Parameters:
7002: # domain - domain to check in .
7003: # user - Name of user to check.
7004: #
7005: # Return:
7006: # 1 - User is an author for domain.
7007: # 0 - User is not an author for domain.
7008: sub is_author {
7009: my ($domain, $user) = @_;
7010:
7011: &Debug("is_author: $user @ $domain");
7012:
7013: my $hashref = &tie_user_hash($domain, $user, "roles",
7014: &GDBM_READER());
7015:
7016: # Author role should show up as a key /domain/_au
1.78 foxr 7017:
1.321 albertel 7018: my $value;
1.487 foxr 7019: if ($hashref) {
1.78 foxr 7020:
1.487 foxr 7021: my $key = "/$domain/_au";
7022: if (defined($hashref)) {
7023: $value = $hashref->{$key};
7024: if(!untie_user_hash($hashref)) {
7025: return 'error: ' . ($!+0)." untie (GDBM) Failed";
7026: }
7027: }
7028:
7029: if(defined($value)) {
7030: &Debug("$user @ $domain is an author");
7031: }
7032: } else {
7033: return 'error: '.($!+0)." tie (GDBM) Failed";
1.261 foxr 7034: }
7035:
7036: return defined($value);
7037: }
1.78 foxr 7038: #
7039: # Checks to see if the input roleput request was to set
1.482 www 7040: # an author role. If so, creates construction space
1.78 foxr 7041: # Parameters:
7042: # request - The request sent to the rolesput subchunk.
7043: # We're looking for /domain/_au
7044: # domain - The domain in which the user is having roles doctored.
7045: # user - Name of the user for which the role is being put.
7046: # authtype - The authentication type associated with the user.
7047: #
1.289 albertel 7048: sub manage_permissions {
1.192 foxr 7049: my ($request, $domain, $user, $authtype) = @_;
1.78 foxr 7050: # See if the request is of the form /$domain/_au
1.289 albertel 7051: if($request =~ /^(\/\Q$domain\E\/_au)$/) { # It's an author rolesput...
1.484 raeburn 7052: my $path=$perlvar{'lonDocRoot'}."/priv/$domain";
1.482 www 7053: unless (-e $path) {
7054: mkdir($path);
7055: }
7056: unless (-e $path.'/'.$user) {
7057: mkdir($path.'/'.$user);
7058: }
1.78 foxr 7059: }
7060: }
1.222 foxr 7061:
7062:
7063: #
7064: # Return the full path of a user password file, whether it exists or not.
7065: # Parameters:
7066: # domain - Domain in which the password file lives.
7067: # user - name of the user.
7068: # Returns:
7069: # Full passwd path:
7070: #
7071: sub password_path {
7072: my ($domain, $user) = @_;
1.264 albertel 7073: return &propath($domain, $user).'/passwd';
1.222 foxr 7074: }
7075:
7076: # Password Filename
7077: # Returns the path to a passwd file given domain and user... only if
7078: # it exists.
7079: # Parameters:
7080: # domain - Domain in which to search.
7081: # user - username.
7082: # Returns:
7083: # - If the password file exists returns its path.
7084: # - If the password file does not exist, returns undefined.
7085: #
7086: sub password_filename {
7087: my ($domain, $user) = @_;
7088:
7089: Debug ("PasswordFilename called: dom = $domain user = $user");
7090:
7091: my $path = &password_path($domain, $user);
7092: Debug("PasswordFilename got path: $path");
7093: if(-e $path) {
7094: return $path;
7095: } else {
7096: return undef;
7097: }
7098: }
7099:
7100: #
7101: # Rewrite the contents of the user's passwd file.
7102: # Parameters:
7103: # domain - domain of the user.
7104: # name - User's name.
7105: # contents - New contents of the file.
7106: # Returns:
7107: # 0 - Failed.
7108: # 1 - Success.
7109: #
7110: sub rewrite_password_file {
7111: my ($domain, $user, $contents) = @_;
7112:
7113: my $file = &password_filename($domain, $user);
7114: if (defined $file) {
7115: my $pf = IO::File->new(">$file");
7116: if($pf) {
7117: print $pf "$contents\n";
7118: return 1;
7119: } else {
7120: return 0;
7121: }
7122: } else {
7123: return 0;
7124: }
7125:
7126: }
7127:
1.78 foxr 7128: #
1.222 foxr 7129: # get_auth_type - Determines the authorization type of a user in a domain.
1.78 foxr 7130:
7131: # Returns the authorization type or nouser if there is no such user.
7132: #
1.436 raeburn 7133: sub get_auth_type {
1.192 foxr 7134: my ($domain, $user) = @_;
1.78 foxr 7135:
1.222 foxr 7136: Debug("get_auth_type( $domain, $user ) \n");
1.78 foxr 7137: my $proname = &propath($domain, $user);
7138: my $passwdfile = "$proname/passwd";
7139: if( -e $passwdfile ) {
7140: my $pf = IO::File->new($passwdfile);
7141: my $realpassword = <$pf>;
7142: chomp($realpassword);
1.79 foxr 7143: Debug("Password info = $realpassword\n");
1.78 foxr 7144: my ($authtype, $contentpwd) = split(/:/, $realpassword);
1.79 foxr 7145: Debug("Authtype = $authtype, content = $contentpwd\n");
1.259 raeburn 7146: return "$authtype:$contentpwd";
1.224 foxr 7147: } else {
1.79 foxr 7148: Debug("Returning nouser");
1.78 foxr 7149: return "nouser";
7150: }
1.1 albertel 7151: }
7152:
1.220 foxr 7153: #
7154: # Validate a user given their domain, name and password. This utility
7155: # function is used by both AuthenticateHandler and ChangePasswordHandler
7156: # to validate the login credentials of a user.
7157: # Parameters:
7158: # $domain - The domain being logged into (this is required due to
7159: # the capability for multihomed systems.
7160: # $user - The name of the user being validated.
7161: # $password - The user's propoposed password.
7162: #
7163: # Returns:
7164: # 1 - The domain,user,pasword triplet corresponds to a valid
7165: # user.
7166: # 0 - The domain,user,password triplet is not a valid user.
7167: #
7168: sub validate_user {
1.396 raeburn 7169: my ($domain, $user, $password, $checkdefauth) = @_;
1.220 foxr 7170:
7171: # Why negative ~pi you may well ask? Well this function is about
7172: # authentication, and therefore very important to get right.
7173: # I've initialized the flag that determines whether or not I've
7174: # validated correctly to a value it's not supposed to get.
7175: # At the end of this function. I'll ensure that it's not still that
7176: # value so we don't just wind up returning some accidental value
7177: # as a result of executing an unforseen code path that
1.249 foxr 7178: # did not set $validated. At the end of valid execution paths,
7179: # validated shoule be 1 for success or 0 for failuer.
1.220 foxr 7180:
7181: my $validated = -3.14159;
7182:
7183: # How we authenticate is determined by the type of authentication
7184: # the user has been assigned. If the authentication type is
7185: # "nouser", the user does not exist so we will return 0.
7186:
1.222 foxr 7187: my $contents = &get_auth_type($domain, $user);
1.220 foxr 7188: my ($howpwd, $contentpwd) = split(/:/, $contents);
7189:
7190: my $null = pack("C",0); # Used by kerberos auth types.
7191:
1.395 raeburn 7192: if ($howpwd eq 'nouser') {
1.396 raeburn 7193: if ($checkdefauth) {
7194: my %domdefaults = &Apache::lonnet::get_domain_defaults($domain);
7195: if ($domdefaults{'auth_def'} eq 'localauth') {
7196: $howpwd = $domdefaults{'auth_def'};
7197: $contentpwd = $domdefaults{'auth_arg_def'};
7198: } elsif ((($domdefaults{'auth_def'} eq 'krb4') ||
7199: ($domdefaults{'auth_def'} eq 'krb5')) &&
7200: ($domdefaults{'auth_arg_def'} ne '')) {
7201: $howpwd = $domdefaults{'auth_def'};
7202: $contentpwd = $domdefaults{'auth_arg_def'};
7203: }
1.395 raeburn 7204: }
7205: }
1.220 foxr 7206: if ($howpwd ne 'nouser') {
7207: if($howpwd eq "internal") { # Encrypted is in local password file.
1.489.2.21 raeburn 7208: if (length($contentpwd) == 13) {
7209: $validated = (crypt($password,$contentpwd) eq $contentpwd);
7210: if ($validated) {
7211: my $ncpass = &hash_passwd($domain,$password);
7212: if (&rewrite_password_file($domain,$user,"$howpwd:$ncpass")) {
7213: &update_passwd_history($user,$domain,$howpwd,'conversion');
7214: &logthis("Validated password hashed with bcrypt for $user:$domain");
7215: }
7216: }
7217: } else {
7218: $validated = &check_internal_passwd($password,$contentpwd,$domain);
7219: }
1.220 foxr 7220: }
7221: elsif ($howpwd eq "unix") { # User is a normal unix user.
7222: $contentpwd = (getpwnam($user))[1];
7223: if($contentpwd) {
7224: if($contentpwd eq 'x') { # Shadow password file...
7225: my $pwauth_path = "/usr/local/sbin/pwauth";
7226: open PWAUTH, "|$pwauth_path" or
7227: die "Cannot invoke authentication";
7228: print PWAUTH "$user\n$password\n";
7229: close PWAUTH;
7230: $validated = ! $?;
7231:
7232: } else { # Passwords in /etc/passwd.
7233: $validated = (crypt($password,
7234: $contentpwd) eq $contentpwd);
7235: }
7236: } else {
7237: $validated = 0;
7238: }
1.439 raeburn 7239: } elsif ($howpwd eq "krb4") { # user is in kerberos 4 auth. domain.
7240: my $checkwithkrb5 = 0;
7241: if ($dist =~/^fedora(\d+)$/) {
7242: if ($1 > 11) {
7243: $checkwithkrb5 = 1;
7244: }
7245: } elsif ($dist =~ /^suse([\d.]+)$/) {
7246: if ($1 > 11.1) {
7247: $checkwithkrb5 = 1;
7248: }
7249: }
7250: if ($checkwithkrb5) {
7251: $validated = &krb5_authen($password,$null,$user,$contentpwd);
7252: } else {
7253: $validated = &krb4_authen($password,$null,$user,$contentpwd);
7254: }
1.224 foxr 7255: } elsif ($howpwd eq "krb5") { # User is in kerberos 5 auth. domain.
1.439 raeburn 7256: $validated = &krb5_authen($password,$null,$user,$contentpwd);
1.224 foxr 7257: } elsif ($howpwd eq "localauth") {
1.220 foxr 7258: # Authenticate via installation specific authentcation method:
7259: $validated = &localauth::localauth($user,
7260: $password,
1.353 albertel 7261: $contentpwd,
7262: $domain);
1.358 albertel 7263: if ($validated < 0) {
1.357 albertel 7264: &logthis("localauth for $contentpwd $user:$domain returned a $validated");
7265: $validated = 0;
7266: }
1.224 foxr 7267: } else { # Unrecognized auth is also bad.
1.220 foxr 7268: $validated = 0;
7269: }
7270: } else {
7271: $validated = 0;
7272: }
7273: #
7274: # $validated has the correct stat of the authentication:
7275: #
7276:
7277: unless ($validated != -3.14159) {
1.249 foxr 7278: # I >really really< want to know if this happens.
7279: # since it indicates that user authentication is badly
7280: # broken in some code path.
7281: #
7282: die "ValidateUser - failed to set the value of validated $domain, $user $password";
1.220 foxr 7283: }
7284: return $validated;
7285: }
7286:
1.489.2.21 raeburn 7287: sub check_internal_passwd {
7288: my ($plainpass,$stored,$domain) = @_;
7289: my (undef,$method,@rest) = split(/!/,$stored);
7290: if ($method eq "bcrypt") {
7291: my $result = &hash_passwd($domain,$plainpass,@rest);
7292: if ($result ne $stored) {
7293: return 0;
7294: }
7295: # Upgrade to a larger number of rounds if necessary
7296: my $defaultcost;
7297: my %domconfig =
7298: &Apache::lonnet::get_dom('configuration',['password'],$domain);
7299: if (ref($domconfig{'password'}) eq 'HASH') {
7300: $defaultcost = $domconfig{'password'}{'cost'};
7301: }
7302: if (($defaultcost eq '') || ($defaultcost =~ /D/)) {
7303: $defaultcost = 10;
7304: }
7305: return 1 unless($rest[0]<$defaultcost);
7306: }
7307: return 0;
7308: }
7309:
7310: sub get_last_authchg {
7311: my ($domain,$user) = @_;
7312: my $lastmod;
7313: my $logname = &propath($domain,$user).'/passwd.log';
7314: if (-e "$logname") {
7315: $lastmod = (stat("$logname"))[9];
7316: }
7317: return $lastmod;
7318: }
7319:
1.439 raeburn 7320: sub krb4_authen {
7321: my ($password,$null,$user,$contentpwd) = @_;
7322: my $validated = 0;
7323: if (!($password =~ /$null/) ) { # Null password not allowed.
7324: eval {
7325: require Authen::Krb4;
7326: };
7327: if (!$@) {
7328: my $k4error = &Authen::Krb4::get_pw_in_tkt($user,
7329: "",
7330: $contentpwd,,
7331: 'krbtgt',
7332: $contentpwd,
7333: 1,
7334: $password);
7335: if(!$k4error) {
7336: $validated = 1;
7337: } else {
7338: $validated = 0;
7339: &logthis('krb4: '.$user.', '.$contentpwd.', '.
7340: &Authen::Krb4::get_err_txt($Authen::Krb4::error));
7341: }
7342: } else {
7343: $validated = krb5_authen($password,$null,$user,$contentpwd);
7344: }
7345: }
7346: return $validated;
7347: }
7348:
7349: sub krb5_authen {
7350: my ($password,$null,$user,$contentpwd) = @_;
7351: my $validated = 0;
7352: if(!($password =~ /$null/)) { # Null password not allowed.
7353: my $krbclient = &Authen::Krb5::parse_name($user.'@'
7354: .$contentpwd);
7355: my $krbservice = "krbtgt/".$contentpwd."\@".$contentpwd;
7356: my $krbserver = &Authen::Krb5::parse_name($krbservice);
7357: my $credentials= &Authen::Krb5::cc_default();
7358: $credentials->initialize(&Authen::Krb5::parse_name($user.'@'
7359: .$contentpwd));
7360: my $krbreturn;
7361: if (exists(&Authen::Krb5::get_init_creds_password)) {
7362: $krbreturn =
7363: &Authen::Krb5::get_init_creds_password($krbclient,$password,
7364: $krbservice);
7365: $validated = (ref($krbreturn) eq 'Authen::Krb5::Creds');
7366: } else {
7367: $krbreturn =
7368: &Authen::Krb5::get_in_tkt_with_password($krbclient,$krbserver,
7369: $password,$credentials);
7370: $validated = ($krbreturn == 1);
7371: }
7372: if (!$validated) {
7373: &logthis('krb5: '.$user.', '.$contentpwd.', '.
7374: &Authen::Krb5::error());
7375: }
7376: }
7377: return $validated;
7378: }
1.220 foxr 7379:
1.84 albertel 7380: sub addline {
7381: my ($fname,$hostid,$ip,$newline)=@_;
7382: my $contents;
7383: my $found=0;
1.355 albertel 7384: my $expr='^'.quotemeta($hostid).':'.quotemeta($ip).':';
1.134 albertel 7385: my $sh;
1.84 albertel 7386: if ($sh=IO::File->new("$fname.subscription")) {
7387: while (my $subline=<$sh>) {
7388: if ($subline !~ /$expr/) {$contents.= $subline;} else {$found=1;}
7389: }
7390: $sh->close();
7391: }
7392: $sh=IO::File->new(">$fname.subscription");
7393: if ($contents) { print $sh $contents; }
7394: if ($newline) { print $sh $newline; }
7395: $sh->close();
7396: return $found;
1.86 www 7397: }
7398:
1.234 foxr 7399: sub get_chat {
1.324 raeburn 7400: my ($cdom,$cname,$udom,$uname,$group)=@_;
1.310 albertel 7401:
1.87 www 7402: my @entries=();
1.324 raeburn 7403: my $namespace = 'nohist_chatroom';
7404: my $namespace_inroom = 'nohist_inchatroom';
1.335 albertel 7405: if ($group ne '') {
1.324 raeburn 7406: $namespace .= '_'.$group;
7407: $namespace_inroom .= '_'.$group;
7408: }
7409: my $hashref = &tie_user_hash($cdom, $cname, $namespace,
1.310 albertel 7410: &GDBM_READER());
7411: if ($hashref) {
7412: @entries=map { $_.':'.$hashref->{$_} } sort(keys(%$hashref));
1.311 albertel 7413: &untie_user_hash($hashref);
1.123 www 7414: }
1.124 www 7415: my @participants=();
1.134 albertel 7416: my $cutoff=time-60;
1.324 raeburn 7417: $hashref = &tie_user_hash($cdom, $cname, $namespace_inroom,
1.310 albertel 7418: &GDBM_WRCREAT());
7419: if ($hashref) {
7420: $hashref->{$uname.':'.$udom}=time;
7421: foreach my $user (sort(keys(%$hashref))) {
7422: if ($hashref->{$user}>$cutoff) {
7423: push(@participants, 'active_participant:'.$user);
1.123 www 7424: }
7425: }
1.311 albertel 7426: &untie_user_hash($hashref);
1.86 www 7427: }
1.124 www 7428: return (@participants,@entries);
1.86 www 7429: }
7430:
1.234 foxr 7431: sub chat_add {
1.324 raeburn 7432: my ($cdom,$cname,$newchat,$group)=@_;
1.88 albertel 7433: my @entries=();
1.142 www 7434: my $time=time;
1.324 raeburn 7435: my $namespace = 'nohist_chatroom';
7436: my $logfile = 'chatroom.log';
1.335 albertel 7437: if ($group ne '') {
1.324 raeburn 7438: $namespace .= '_'.$group;
7439: $logfile = 'chatroom_'.$group.'.log';
7440: }
7441: my $hashref = &tie_user_hash($cdom, $cname, $namespace,
1.310 albertel 7442: &GDBM_WRCREAT());
7443: if ($hashref) {
7444: @entries=map { $_.':'.$hashref->{$_} } sort(keys(%$hashref));
1.88 albertel 7445: my ($lastid)=($entries[$#entries]=~/^(\w+)\:/);
7446: my ($thentime,$idnum)=split(/\_/,$lastid);
7447: my $newid=$time.'_000000';
7448: if ($thentime==$time) {
7449: $idnum=~s/^0+//;
7450: $idnum++;
7451: $idnum=substr('000000'.$idnum,-6,6);
7452: $newid=$time.'_'.$idnum;
7453: }
1.310 albertel 7454: $hashref->{$newid}=$newchat;
1.88 albertel 7455: my $expired=$time-3600;
1.310 albertel 7456: foreach my $comment (keys(%$hashref)) {
7457: my ($thistime) = ($comment=~/(\d+)\_/);
1.88 albertel 7458: if ($thistime<$expired) {
1.310 albertel 7459: delete $hashref->{$comment};
1.88 albertel 7460: }
7461: }
1.310 albertel 7462: {
7463: my $proname=&propath($cdom,$cname);
1.324 raeburn 7464: if (open(CHATLOG,">>$proname/$logfile")) {
1.310 albertel 7465: print CHATLOG ("$time:".&unescape($newchat)."\n");
7466: }
7467: close(CHATLOG);
1.142 www 7468: }
1.311 albertel 7469: &untie_user_hash($hashref);
1.86 www 7470: }
1.84 albertel 7471: }
7472:
7473: sub unsub {
7474: my ($fname,$clientip)=@_;
7475: my $result;
1.188 foxr 7476: my $unsubs = 0; # Number of successful unsubscribes:
7477:
7478:
7479: # An old way subscriptions were handled was to have a
7480: # subscription marker file:
7481:
7482: Debug("Attempting unlink of $fname.$clientname");
1.161 foxr 7483: if (unlink("$fname.$clientname")) {
1.188 foxr 7484: $unsubs++; # Successful unsub via marker file.
7485: }
7486:
7487: # The more modern way to do it is to have a subscription list
7488: # file:
7489:
1.84 albertel 7490: if (-e "$fname.subscription") {
1.161 foxr 7491: my $found=&addline($fname,$clientname,$clientip,'');
1.188 foxr 7492: if ($found) {
7493: $unsubs++;
7494: }
7495: }
7496:
7497: # If either or both of these mechanisms succeeded in unsubscribing a
7498: # resource we can return ok:
7499:
7500: if($unsubs) {
7501: $result = "ok\n";
1.84 albertel 7502: } else {
1.188 foxr 7503: $result = "not_subscribed\n";
1.84 albertel 7504: }
1.188 foxr 7505:
1.84 albertel 7506: return $result;
7507: }
7508:
1.101 www 7509: sub currentversion {
7510: my $fname=shift;
7511: my $version=-1;
7512: my $ulsdir='';
7513: if ($fname=~/^(.+)\/[^\/]+$/) {
7514: $ulsdir=$1;
7515: }
1.114 albertel 7516: my ($fnamere1,$fnamere2);
7517: # remove version if already specified
1.101 www 7518: $fname=~s/\.\d+\.(\w+(?:\.meta)*)$/\.$1/;
1.114 albertel 7519: # get the bits that go before and after the version number
7520: if ( $fname=~/^(.*\.)(\w+(?:\.meta)*)$/ ) {
7521: $fnamere1=$1;
7522: $fnamere2='.'.$2;
7523: }
1.101 www 7524: if (-e $fname) { $version=1; }
7525: if (-e $ulsdir) {
1.134 albertel 7526: if(-d $ulsdir) {
7527: if (opendir(LSDIR,$ulsdir)) {
7528: my $ulsfn;
7529: while ($ulsfn=readdir(LSDIR)) {
1.101 www 7530: # see if this is a regular file (ignore links produced earlier)
1.134 albertel 7531: my $thisfile=$ulsdir.'/'.$ulsfn;
7532: unless (-l $thisfile) {
1.160 www 7533: if ($thisfile=~/\Q$fnamere1\E(\d+)\Q$fnamere2\E$/) {
1.134 albertel 7534: if ($1>$version) { $version=$1; }
7535: }
7536: }
7537: }
7538: closedir(LSDIR);
7539: $version++;
7540: }
7541: }
7542: }
7543: return $version;
1.101 www 7544: }
7545:
7546: sub thisversion {
7547: my $fname=shift;
7548: my $version=-1;
7549: if ($fname=~/\.(\d+)\.\w+(?:\.meta)*$/) {
7550: $version=$1;
7551: }
7552: return $version;
7553: }
7554:
1.84 albertel 7555: sub subscribe {
7556: my ($userinput,$clientip)=@_;
7557: my $result;
1.293 albertel 7558: my ($cmd,$fname)=split(/:/,$userinput,2);
1.84 albertel 7559: my $ownership=&ishome($fname);
7560: if ($ownership eq 'owner') {
1.101 www 7561: # explitly asking for the current version?
7562: unless (-e $fname) {
7563: my $currentversion=¤tversion($fname);
7564: if (&thisversion($fname)==$currentversion) {
7565: if ($fname=~/^(.+)\.\d+\.(\w+(?:\.meta)*)$/) {
7566: my $root=$1;
7567: my $extension=$2;
7568: symlink($root.'.'.$extension,
7569: $root.'.'.$currentversion.'.'.$extension);
1.102 www 7570: unless ($extension=~/\.meta$/) {
7571: symlink($root.'.'.$extension.'.meta',
7572: $root.'.'.$currentversion.'.'.$extension.'.meta');
7573: }
1.101 www 7574: }
7575: }
7576: }
1.84 albertel 7577: if (-e $fname) {
7578: if (-d $fname) {
7579: $result="directory\n";
7580: } else {
1.161 foxr 7581: if (-e "$fname.$clientname") {&unsub($fname,$clientip);}
1.134 albertel 7582: my $now=time;
1.161 foxr 7583: my $found=&addline($fname,$clientname,$clientip,
7584: "$clientname:$clientip:$now\n");
1.84 albertel 7585: if ($found) { $result="$fname\n"; }
7586: # if they were subscribed to only meta data, delete that
7587: # subscription, when you subscribe to a file you also get
7588: # the metadata
7589: unless ($fname=~/\.meta$/) { &unsub("$fname.meta",$clientip); }
7590: $fname=~s/\/home\/httpd\/html\/res/raw/;
1.476 raeburn 7591: my $protocol = $Apache::lonnet::protocol{$perlvar{'lonHostID'}};
7592: $protocol = 'http' if ($protocol ne 'https');
7593: $fname=$protocol.'://'.&Apache::lonnet::hostname($perlvar{'lonHostID'})."/".$fname;
1.84 albertel 7594: $result="$fname\n";
7595: }
7596: } else {
7597: $result="not_found\n";
7598: }
7599: } else {
7600: $result="rejected\n";
7601: }
7602: return $result;
7603: }
1.287 foxr 7604: # Change the passwd of a unix user. The caller must have
7605: # first verified that the user is a loncapa user.
7606: #
7607: # Parameters:
7608: # user - Unix user name to change.
7609: # pass - New password for the user.
7610: # Returns:
7611: # ok - if success
7612: # other - Some meaningfule error message string.
7613: # NOTE:
7614: # invokes a setuid script to change the passwd.
7615: sub change_unix_password {
7616: my ($user, $pass) = @_;
7617:
7618: &Debug("change_unix_password");
7619: my $execdir=$perlvar{'lonDaemons'};
7620: &Debug("Opening lcpasswd pipeline");
7621: my $pf = IO::File->new("|$execdir/lcpasswd > "
7622: ."$perlvar{'lonDaemons'}"
7623: ."/logs/lcpasswd.log");
7624: print $pf "$user\n$pass\n$pass\n";
7625: close $pf;
7626: my $err = $?;
7627: return ($err < @passwderrors) ? $passwderrors[$err] :
7628: "pwchange_falure - unknown error";
7629:
7630:
7631: }
7632:
1.91 albertel 7633:
7634: sub make_passwd_file {
1.489.2.21 raeburn 7635: my ($uname,$udom,$umode,$npass,$passfilename,$action)=@_;
1.390 raeburn 7636: my $result="ok";
1.91 albertel 7637: if ($umode eq 'krb4' or $umode eq 'krb5') {
7638: {
7639: my $pf = IO::File->new(">$passfilename");
1.261 foxr 7640: if ($pf) {
7641: print $pf "$umode:$npass\n";
1.489.2.21 raeburn 7642: &update_passwd_history($uname,$udom,$umode,$action);
1.261 foxr 7643: } else {
7644: $result = "pass_file_failed_error";
7645: }
1.91 albertel 7646: }
7647: } elsif ($umode eq 'internal') {
1.489.2.21 raeburn 7648: my $ncpass = &hash_passwd($udom,$npass);
1.91 albertel 7649: {
7650: &Debug("Creating internal auth");
7651: my $pf = IO::File->new(">$passfilename");
1.261 foxr 7652: if($pf) {
7653: print $pf "internal:$ncpass\n";
1.489.2.21 raeburn 7654: &update_passwd_history($uname,$udom,$umode,$action);
1.261 foxr 7655: } else {
7656: $result = "pass_file_failed_error";
7657: }
1.91 albertel 7658: }
7659: } elsif ($umode eq 'localauth') {
7660: {
7661: my $pf = IO::File->new(">$passfilename");
1.261 foxr 7662: if($pf) {
7663: print $pf "localauth:$npass\n";
1.489.2.21 raeburn 7664: &update_passwd_history($uname,$udom,$umode,$action);
1.261 foxr 7665: } else {
7666: $result = "pass_file_failed_error";
7667: }
1.91 albertel 7668: }
7669: } elsif ($umode eq 'unix') {
1.489.2.8 raeburn 7670: &logthis(">>>Attempt to create unix account blocked -- unix auth not available for new users.");
7671: $result="no_new_unix_accounts";
1.91 albertel 7672: } elsif ($umode eq 'none') {
7673: {
1.223 foxr 7674: my $pf = IO::File->new("> $passfilename");
1.261 foxr 7675: if($pf) {
7676: print $pf "none:\n";
7677: } else {
7678: $result = "pass_file_failed_error";
7679: }
1.91 albertel 7680: }
7681: } else {
1.390 raeburn 7682: $result="auth_mode_error";
1.91 albertel 7683: }
7684: return $result;
1.121 albertel 7685: }
7686:
1.265 albertel 7687: sub convert_photo {
7688: my ($start,$dest)=@_;
7689: system("convert $start $dest");
7690: }
7691:
1.121 albertel 7692: sub sethost {
7693: my ($remotereq) = @_;
7694: my (undef,$hostid)=split(/:/,$remotereq);
1.322 albertel 7695: # ignore sethost if we are already correct
7696: if ($hostid eq $currenthostid) {
7697: return 'ok';
7698: }
7699:
1.121 albertel 7700: if (!defined($hostid)) { $hostid=$perlvar{'lonHostID'}; }
1.368 albertel 7701: if (&Apache::lonnet::get_host_ip($perlvar{'lonHostID'})
7702: eq &Apache::lonnet::get_host_ip($hostid)) {
1.200 matthew 7703: $currenthostid =$hostid;
1.369 albertel 7704: $currentdomainid=&Apache::lonnet::host_domain($hostid);
1.443 www 7705: # &logthis("Setting hostid to $hostid, and domain to $currentdomainid");
1.121 albertel 7706: } else {
7707: &logthis("Requested host id $hostid not an alias of ".
7708: $perlvar{'lonHostID'}." refusing connection");
7709: return 'unable_to_set';
7710: }
7711: return 'ok';
7712: }
7713:
7714: sub version {
7715: my ($userinput)=@_;
7716: $remoteVERSION=(split(/:/,$userinput))[1];
7717: return "version:$VERSION";
1.127 albertel 7718: }
1.178 foxr 7719:
1.447 raeburn 7720: sub get_usersession_config {
7721: my ($dom,$name) = @_;
7722: my ($usersessionconf,$cached)=&Apache::lonnet::is_cached_new($name,$dom);
7723: if (defined($cached)) {
7724: return $usersessionconf;
7725: } else {
7726: my %domconfig = &Apache::lonnet::get_dom('configuration',['usersessions'],$dom);
7727: if (ref($domconfig{'usersessions'}) eq 'HASH') {
7728: &Apache::lonnet::do_cache_new($name,$dom,$domconfig{'usersessions'},3600);
7729: return $domconfig{'usersessions'};
7730: }
7731: }
7732: return;
7733: }
1.200 matthew 7734:
1.450 raeburn 7735:
1.471 raeburn 7736: sub distro_and_arch {
7737: return $dist.':'.$arch;
7738: }
7739:
1.61 harris41 7740: # ----------------------------------- POD (plain old documentation, CPAN style)
7741:
7742: =head1 NAME
7743:
7744: lond - "LON Daemon" Server (port "LOND" 5663)
7745:
7746: =head1 SYNOPSIS
7747:
1.74 harris41 7748: Usage: B<lond>
7749:
7750: Should only be run as user=www. This is a command-line script which
7751: is invoked by B<loncron>. There is no expectation that a typical user
7752: will manually start B<lond> from the command-line. (In other words,
7753: DO NOT START B<lond> YOURSELF.)
1.61 harris41 7754:
7755: =head1 DESCRIPTION
7756:
1.74 harris41 7757: There are two characteristics associated with the running of B<lond>,
7758: PROCESS MANAGEMENT (starting, stopping, handling child processes)
7759: and SERVER-SIDE ACTIVITIES (password authentication, user creation,
7760: subscriptions, etc). These are described in two large
7761: sections below.
7762:
7763: B<PROCESS MANAGEMENT>
7764:
1.61 harris41 7765: Preforker - server who forks first. Runs as a daemon. HUPs.
7766: Uses IDEA encryption
7767:
1.74 harris41 7768: B<lond> forks off children processes that correspond to the other servers
7769: in the network. Management of these processes can be done at the
7770: parent process level or the child process level.
7771:
7772: B<logs/lond.log> is the location of log messages.
7773:
7774: The process management is now explained in terms of linux shell commands,
7775: subroutines internal to this code, and signal assignments:
7776:
7777: =over 4
7778:
7779: =item *
7780:
7781: PID is stored in B<logs/lond.pid>
7782:
7783: This is the process id number of the parent B<lond> process.
7784:
7785: =item *
7786:
7787: SIGTERM and SIGINT
7788:
7789: Parent signal assignment:
7790: $SIG{INT} = $SIG{TERM} = \&HUNTSMAN;
7791:
7792: Child signal assignment:
7793: $SIG{INT} = 'DEFAULT'; (and SIGTERM is DEFAULT also)
7794: (The child dies and a SIGALRM is sent to parent, awaking parent from slumber
7795: to restart a new child.)
7796:
7797: Command-line invocations:
7798: B<kill> B<-s> SIGTERM I<PID>
7799: B<kill> B<-s> SIGINT I<PID>
7800:
7801: Subroutine B<HUNTSMAN>:
7802: This is only invoked for the B<lond> parent I<PID>.
7803: This kills all the children, and then the parent.
7804: The B<lonc.pid> file is cleared.
7805:
7806: =item *
7807:
7808: SIGHUP
7809:
7810: Current bug:
7811: This signal can only be processed the first time
7812: on the parent process. Subsequent SIGHUP signals
7813: have no effect.
7814:
7815: Parent signal assignment:
7816: $SIG{HUP} = \&HUPSMAN;
7817:
7818: Child signal assignment:
7819: none (nothing happens)
7820:
7821: Command-line invocations:
7822: B<kill> B<-s> SIGHUP I<PID>
7823:
7824: Subroutine B<HUPSMAN>:
7825: This is only invoked for the B<lond> parent I<PID>,
7826: This kills all the children, and then the parent.
7827: The B<lond.pid> file is cleared.
7828:
7829: =item *
7830:
7831: SIGUSR1
7832:
7833: Parent signal assignment:
7834: $SIG{USR1} = \&USRMAN;
7835:
7836: Child signal assignment:
7837: $SIG{USR1}= \&logstatus;
7838:
7839: Command-line invocations:
7840: B<kill> B<-s> SIGUSR1 I<PID>
7841:
7842: Subroutine B<USRMAN>:
7843: When invoked for the B<lond> parent I<PID>,
7844: SIGUSR1 is sent to all the children, and the status of
7845: each connection is logged.
1.144 foxr 7846:
7847: =item *
7848:
7849: SIGUSR2
7850:
7851: Parent Signal assignment:
7852: $SIG{USR2} = \&UpdateHosts
7853:
7854: Child signal assignment:
7855: NONE
7856:
1.74 harris41 7857:
7858: =item *
7859:
7860: SIGCHLD
7861:
7862: Parent signal assignment:
7863: $SIG{CHLD} = \&REAPER;
7864:
7865: Child signal assignment:
7866: none
7867:
7868: Command-line invocations:
7869: B<kill> B<-s> SIGCHLD I<PID>
7870:
7871: Subroutine B<REAPER>:
7872: This is only invoked for the B<lond> parent I<PID>.
7873: Information pertaining to the child is removed.
7874: The socket port is cleaned up.
7875:
7876: =back
7877:
7878: B<SERVER-SIDE ACTIVITIES>
7879:
7880: Server-side information can be accepted in an encrypted or non-encrypted
7881: method.
7882:
7883: =over 4
7884:
7885: =item ping
7886:
7887: Query a client in the hosts.tab table; "Are you there?"
7888:
7889: =item pong
7890:
7891: Respond to a ping query.
7892:
7893: =item ekey
7894:
7895: Read in encrypted key, make cipher. Respond with a buildkey.
7896:
7897: =item load
7898:
7899: Respond with CPU load based on a computation upon /proc/loadavg.
7900:
7901: =item currentauth
7902:
7903: Reply with current authentication information (only over an
7904: encrypted channel).
7905:
7906: =item auth
7907:
7908: Only over an encrypted channel, reply as to whether a user's
7909: authentication information can be validated.
7910:
7911: =item passwd
7912:
7913: Allow for a password to be set.
7914:
7915: =item makeuser
7916:
7917: Make a user.
7918:
7919: =item passwd
7920:
7921: Allow for authentication mechanism and password to be changed.
7922:
7923: =item home
1.61 harris41 7924:
1.74 harris41 7925: Respond to a question "are you the home for a given user?"
7926:
7927: =item update
7928:
7929: Update contents of a subscribed resource.
7930:
7931: =item unsubscribe
7932:
7933: The server is unsubscribing from a resource.
7934:
7935: =item subscribe
7936:
7937: The server is subscribing to a resource.
7938:
7939: =item log
7940:
7941: Place in B<logs/lond.log>
7942:
7943: =item put
7944:
7945: stores hash in namespace
7946:
1.489.2.2 raeburn 7947: =item rolesput
1.74 harris41 7948:
7949: put a role into a user's environment
7950:
7951: =item get
7952:
7953: returns hash with keys from array
7954: reference filled in from namespace
7955:
7956: =item eget
7957:
7958: returns hash with keys from array
7959: reference filled in from namesp (encrypts the return communication)
7960:
7961: =item rolesget
7962:
7963: get a role from a user's environment
7964:
7965: =item del
7966:
7967: deletes keys out of array from namespace
7968:
7969: =item keys
7970:
7971: returns namespace keys
7972:
7973: =item dump
7974:
7975: dumps the complete (or key matching regexp) namespace into a hash
7976:
7977: =item store
7978:
7979: stores hash permanently
7980: for this url; hashref needs to be given and should be a \%hashname; the
7981: remaining args aren't required and if they aren't passed or are '' they will
7982: be derived from the ENV
7983:
7984: =item restore
7985:
7986: returns a hash for a given url
7987:
7988: =item querysend
7989:
7990: Tells client about the lonsql process that has been launched in response
7991: to a sent query.
7992:
7993: =item queryreply
7994:
7995: Accept information from lonsql and make appropriate storage in temporary
7996: file space.
7997:
7998: =item idput
7999:
8000: Defines usernames as corresponding to IDs. (These "IDs" are unique identifiers
8001: for each student, defined perhaps by the institutional Registrar.)
8002:
8003: =item idget
8004:
8005: Returns usernames corresponding to IDs. (These "IDs" are unique identifiers
8006: for each student, defined perhaps by the institutional Registrar.)
8007:
8008: =item tmpput
8009:
8010: Accept and store information in temporary space.
8011:
8012: =item tmpget
8013:
8014: Send along temporarily stored information.
8015:
8016: =item ls
8017:
8018: List part of a user's directory.
8019:
1.135 foxr 8020: =item pushtable
8021:
8022: Pushes a file in /home/httpd/lonTab directory. Currently limited to:
8023: hosts.tab and domain.tab. The old file is copied to *.tab.backup but
8024: must be restored manually in case of a problem with the new table file.
8025: pushtable requires that the request be encrypted and validated via
8026: ValidateManager. The form of the command is:
8027: enc:pushtable tablename <tablecontents> \n
8028: where pushtable, tablename and <tablecontents> will be encrypted, but \n is a
8029: cleartext newline.
8030:
1.74 harris41 8031: =item Hanging up (exit or init)
8032:
8033: What to do when a client tells the server that they (the client)
8034: are leaving the network.
8035:
8036: =item unknown command
8037:
8038: If B<lond> is sent an unknown command (not in the list above),
8039: it replys to the client "unknown_cmd".
1.135 foxr 8040:
1.74 harris41 8041:
8042: =item UNKNOWN CLIENT
8043:
8044: If the anti-spoofing algorithm cannot verify the client,
8045: the client is rejected (with a "refused" message sent
8046: to the client, and the connection is closed.
8047:
8048: =back
1.61 harris41 8049:
8050: =head1 PREREQUISITES
8051:
8052: IO::Socket
8053: IO::File
8054: Apache::File
8055: POSIX
8056: Crypt::IDEA
8057: LWP::UserAgent()
8058: GDBM_File
8059: Authen::Krb4
1.91 albertel 8060: Authen::Krb5
1.61 harris41 8061:
8062: =head1 COREQUISITES
8063:
8064: =head1 OSNAMES
8065:
8066: linux
8067:
8068: =head1 SCRIPT CATEGORIES
8069:
8070: Server/Process
8071:
8072: =cut
1.409 foxr 8073:
8074:
8075: =pod
8076:
8077: =head1 LOG MESSAGES
8078:
8079: The messages below can be emitted in the lond log. This log is located
8080: in ~httpd/perl/logs/lond.log Many log messages have HTML encapsulation
8081: to provide coloring if examined from inside a web page. Some do not.
8082: Where color is used, the colors are; Red for sometihhng to get excited
8083: about and to follow up on. Yellow for something to keep an eye on to
8084: be sure it does not get worse, Green,and Blue for informational items.
8085:
8086: In the discussions below, sometimes reference is made to ~httpd
8087: when describing file locations. There isn't really an httpd
8088: user, however there is an httpd directory that gets installed in the
8089: place that user home directories go. On linux, this is usually
8090: (always?) /home/httpd.
8091:
8092:
8093: Some messages are colorless. These are usually (not always)
8094: Green/Blue color level messages.
8095:
8096: =over 2
8097:
8098: =item (Red) LocalConnection rejecting non local: <ip> ne 127.0.0.1
8099:
8100: A local connection negotiation was attempted by
8101: a host whose IP address was not 127.0.0.1.
8102: The socket is closed and the child will exit.
8103: lond has three ways to establish an encyrption
8104: key with a client:
8105:
8106: =over 2
8107:
8108: =item local
8109:
8110: The key is written and read from a file.
8111: This is only valid for connections from localhost.
8112:
8113: =item insecure
8114:
8115: The key is generated by the server and
8116: transmitted to the client.
8117:
8118: =item ssl (secure)
8119:
8120: An ssl connection is negotiated with the client,
8121: the key is generated by the server and sent to the
8122: client across this ssl connection before the
8123: ssl connectionis terminated and clear text
8124: transmission resumes.
8125:
8126: =back
8127:
8128: =item (Red) LocalConnection: caller is insane! init = <init> and type = <type>
8129:
8130: The client is local but has not sent an initialization
8131: string that is the literal "init:local" The connection
8132: is closed and the child exits.
8133:
8134: =item Red CRITICAL Can't get key file <error>
8135:
8136: SSL key negotiation is being attempted but the call to
8137: lonssl::KeyFile failed. This usually means that the
8138: configuration file is not correctly defining or protecting
8139: the directories/files lonCertificateDirectory or
8140: lonnetPrivateKey
8141: <error> is a string that describes the reason that
8142: the key file could not be located.
8143:
8144: =item (Red) CRITICAL Can't get certificates <error>
8145:
8146: SSL key negotiation failed because we were not able to retrives our certificate
8147: or the CA's certificate in the call to lonssl::CertificateFile
8148: <error> is the textual reason this failed. Usual reasons:
8149:
8150: =over 2
8151:
8152: =item Apache config file for loncapa incorrect:
8153:
8154: one of the variables
8155: lonCertificateDirectory, lonnetCertificateAuthority, or lonnetCertificate
8156: undefined or incorrect
8157:
8158: =item Permission error:
8159:
8160: The directory pointed to by lonCertificateDirectory is not readable by lond
8161:
8162: =item Permission error:
8163:
8164: Files in the directory pointed to by lonCertificateDirectory are not readable by lond.
8165:
8166: =item Installation error:
8167:
8168: Either the certificate authority file or the certificate have not
8169: been installed in lonCertificateDirectory.
8170:
8171: =item (Red) CRITICAL SSL Socket promotion failed: <err>
8172:
8173: The promotion of the connection from plaintext to SSL failed
8174: <err> is the reason for the failure. There are two
8175: system calls involved in the promotion (one of which failed),
8176: a dup to produce
8177: a second fd on the raw socket over which the encrypted data
8178: will flow and IO::SOcket::SSL->new_from_fd which creates
8179: the SSL connection on the duped fd.
8180:
8181: =item (Blue) WARNING client did not respond to challenge
8182:
8183: This occurs on an insecure (non SSL) connection negotiation request.
8184: lond generates some number from the time, the PID and sends it to
8185: the client. The client must respond by echoing this information back.
8186: If the client does not do so, that's a violation of the challenge
8187: protocols and the connection will be failed.
8188:
8189: =item (Red) No manager table. Nobody can manage!!
8190:
8191: lond has the concept of privileged hosts that
8192: can perform remote management function such
8193: as update the hosts.tab. The manager hosts
8194: are described in the
8195: ~httpd/lonTabs/managers.tab file.
8196: this message is logged if this file is missing.
8197:
8198:
8199: =item (Green) Registering manager <dnsname> as <cluster_name> with <ipaddress>
8200:
8201: Reports the successful parse and registration
8202: of a specific manager.
8203:
8204: =item Green existing host <clustername:dnsname>
8205:
8206: The manager host is already defined in the hosts.tab
8207: the information in that table, rather than the info in the
8208: manager table will be used to determine the manager's ip.
8209:
8210: =item (Red) Unable to craete <filename>
8211:
8212: lond has been asked to create new versions of an administrative
8213: file (by a manager). When this is done, the new file is created
8214: in a temp file and then renamed into place so that there are always
8215: usable administrative files, even if the update fails. This failure
8216: message means that the temp file could not be created.
8217: The update is abandoned, and the old file is available for use.
8218:
8219: =item (Green) CopyFile from <oldname> to <newname> failed
8220:
8221: In an update of administrative files, the copy of the existing file to a
8222: backup file failed. The installation of the new file may still succeed,
8223: but there will not be a back up file to rever to (this should probably
8224: be yellow).
8225:
8226: =item (Green) Pushfile: backed up <oldname> to <newname>
8227:
8228: See above, the backup of the old administrative file succeeded.
8229:
8230: =item (Red) Pushfile: Unable to install <filename> <reason>
8231:
8232: The new administrative file could not be installed. In this case,
8233: the old administrative file is still in use.
8234:
8235: =item (Green) Installed new < filename>.
8236:
8237: The new administrative file was successfullly installed.
8238:
8239: =item (Red) Reinitializing lond pid=<pid>
8240:
8241: The lonc child process <pid> will be sent a USR2
8242: signal.
8243:
8244: =item (Red) Reinitializing self
8245:
8246: We've been asked to re-read our administrative files,and
8247: are doing so.
8248:
8249: =item (Yellow) error:Invalid process identifier <ident>
8250:
8251: A reinit command was received, but the target part of the
8252: command was not valid. It must be either
8253: 'lond' or 'lonc' but was <ident>
8254:
8255: =item (Green) isValideditCommand checking: Command = <command> Key = <key> newline = <newline>
8256:
8257: Checking to see if lond has been handed a valid edit
8258: command. It is possible the edit command is not valid
8259: in that case there are no log messages to indicate that.
8260:
8261: =item Result of password change for <username> pwchange_success
8262:
8263: The password for <username> was
8264: successfully changed.
8265:
8266: =item Unable to open <user> passwd to change password
8267:
8268: Could not rewrite the
8269: internal password file for a user
8270:
8271: =item Result of password change for <user> : <result>
8272:
8273: A unix password change for <user> was attempted
8274: and the pipe returned <result>
8275:
8276: =item LWP GET: <message> for <fname> (<remoteurl>)
8277:
8278: The lightweight process fetch for a resource failed
8279: with <message> the local filename that should
8280: have existed/been created was <fname> the
8281: corresponding URI: <remoteurl> This is emitted in several
8282: places.
8283:
8284: =item Unable to move <transname> to <destname>
8285:
8286: From fetch_user_file_handler - the user file was replicated but could not
8287: be mv'd to its final location.
8288:
8289: =item Looking for <domain> <username>
8290:
8291: From user_has_session_handler - This should be a Debug call instead
8292: it indicates lond is about to check whether the specified user has a
8293: session active on the specified domain on the local host.
8294:
8295: =item Client <ip> (<name>) hanging up: <input>
8296:
8297: lond has been asked to exit by its client. The <ip> and <name> identify the
8298: client systemand <input> is the full exit command sent to the server.
8299:
8300: =item Red CRITICAL: ABNORMAL EXIT. child <pid> for server <hostname> died through a crass with this error->[<message>].
8301:
8302: A lond child terminated. NOte that this termination can also occur when the
8303: child receives the QUIT or DIE signals. <pid> is the process id of the child,
8304: <hostname> the host lond is working for, and <message> the reason the child died
8305: to the best of our ability to get it (I would guess that any numeric value
8306: represents and errno value). This is immediately followed by
8307:
8308: =item Famous last words: Catching exception - <log>
8309:
8310: Where log is some recent information about the state of the child.
8311:
8312: =item Red CRITICAL: TIME OUT <pid>
8313:
8314: Some timeout occured for server <pid>. THis is normally a timeout on an LWP
8315: doing an HTTP::GET.
8316:
8317: =item child <pid> died
8318:
8319: The reaper caught a SIGCHILD for the lond child process <pid>
8320: This should be modified to also display the IP of the dying child
8321: $children{$pid}
8322:
8323: =item Unknown child 0 died
8324: A child died but the wait for it returned a pid of zero which really should not
8325: ever happen.
8326:
8327: =item Child <which> - <pid> looks like we missed it's death
8328:
8329: When a sigchild is received, the reaper process checks all children to see if they are
8330: alive. If children are dying quite quickly, the lack of signal queuing can mean
8331: that a signal hearalds the death of more than one child. If so this message indicates
8332: which other one died. <which> is the ip of a dead child
8333:
8334: =item Free socket: <shutdownretval>
8335:
8336: The HUNTSMAN sub was called due to a SIGINT in a child process. The socket is being shutdown.
8337: for whatever reason, <shutdownretval> is printed but in fact shutdown() is not documented
8338: to return anything. This is followed by:
8339:
8340: =item Red CRITICAL: Shutting down
8341:
8342: Just prior to exit.
8343:
8344: =item Free socket: <shutdownretval>
8345:
8346: The HUPSMAN sub was called due to a SIGHUP. all children get killsed, and lond execs itself.
8347: This is followed by:
8348:
8349: =item (Red) CRITICAL: Restarting
8350:
8351: lond is about to exec itself to restart.
8352:
8353: =item (Blue) Updating connections
8354:
8355: (In response to a USR2). All the children (except the one for localhost)
8356: are about to be killed, the hosts tab reread, and Apache reloaded via apachereload.
8357:
8358: =item (Blue) UpdateHosts killing child <pid> for ip <ip>
8359:
8360: Due to USR2 as above.
8361:
8362: =item (Green) keeping child for ip <ip> (pid = <pid>)
8363:
8364: In response to USR2 as above, the child indicated is not being restarted because
8365: it's assumed that we'll always need a child for the localhost.
8366:
8367:
8368: =item Going to check on the children
8369:
8370: Parent is about to check on the health of the child processes.
8371: Note that this is in response to a USR1 sent to the parent lond.
8372: there may be one or more of the next two messages:
8373:
8374: =item <pid> is dead
8375:
8376: A child that we have in our child hash as alive has evidently died.
8377:
8378: =item Child <pid> did not respond
8379:
8380: In the health check the child <pid> did not update/produce a pid_.txt
8381: file when sent it's USR1 signal. That process is killed with a 9 signal, as it's
8382: assumed to be hung in some un-fixable way.
8383:
8384: =item Finished checking children
8385:
8386: Master processs's USR1 processing is cojmplete.
8387:
8388: =item (Red) CRITICAL: ------- Starting ------
8389:
8390: (There are more '-'s on either side). Lond has forked itself off to
8391: form a new session and is about to start actual initialization.
8392:
8393: =item (Green) Attempting to start child (<client>)
8394:
8395: Started a new child process for <client>. Client is IO::Socket object
8396: connected to the child. This was as a result of a TCP/IP connection from a client.
8397:
8398: =item Unable to determine who caller was, getpeername returned nothing
8399:
8400: In child process initialization. either getpeername returned undef or
8401: a zero sized object was returned. Processing continues, but in my opinion,
8402: this should be cause for the child to exit.
8403:
8404: =item Unable to determine clientip
8405:
8406: In child process initialization. The peer address from getpeername was not defined.
8407: The client address is stored as "Unavailable" and processing continues.
8408:
8409: =item (Yellow) INFO: Connection <ip> <name> connection type = <type>
8410:
8411: In child initialization. A good connectionw as received from <ip>.
8412:
8413: =over 2
8414:
8415: =item <name>
8416:
8417: is the name of the client from hosts.tab.
8418:
8419: =item <type>
8420:
8421: Is the connection type which is either
8422:
8423: =over 2
8424:
8425: =item manager
8426:
8427: The connection is from a manager node, not in hosts.tab
8428:
8429: =item client
8430:
8431: the connection is from a non-manager in the hosts.tab
8432:
8433: =item both
8434:
8435: The connection is from a manager in the hosts.tab.
8436:
8437: =back
8438:
8439: =back
8440:
8441: =item (Blue) Certificates not installed -- trying insecure auth
8442:
8443: One of the certificate file, key file or
8444: certificate authority file could not be found for a client attempting
8445: SSL connection intiation. COnnection will be attemptied in in-secure mode.
8446: (this would be a system with an up to date lond that has not gotten a
8447: certificate from us).
8448:
8449: =item (Green) Successful local authentication
8450:
8451: A local connection successfully negotiated the encryption key.
8452: In this case the IDEA key is in a file (that is hopefully well protected).
8453:
8454: =item (Green) Successful ssl authentication with <client>
8455:
8456: The client (<client> is the peer's name in hosts.tab), has successfully
8457: negotiated an SSL connection with this child process.
8458:
8459: =item (Green) Successful insecure authentication with <client>
8460:
8461:
8462: The client has successfully negotiated an insecure connection withthe child process.
8463:
8464: =item (Yellow) Attempted insecure connection disallowed
8465:
8466: The client attempted and failed to successfully negotiate a successful insecure
8467: connection. This can happen either because the variable londAllowInsecure is false
8468: or undefined, or becuse the child did not successfully echo back the challenge
8469: string.
8470:
8471:
8472: =back
8473:
1.441 raeburn 8474: =back
8475:
1.409 foxr 8476:
8477: =cut
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