Annotation of loncom/lond, revision 1.489.2.26
1.1 albertel 1: #!/usr/bin/perl
2: # The LearningOnline Network
3: # lond "LON Daemon" Server (port "LOND" 5663)
1.60 www 4: #
1.489.2.26! raeburn 5: # $Id: lond,v 1.489.2.25 2016/09/27 16:30:24 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:
1.489.2.26! raeburn 67: my $VERSION='$Revision: 1.489.2.25 $'; #' 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:
1.489.2.25 raeburn 1432: # (a) /home/httpd/html/res/<domain>
1.489.2.23 raeburn 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 $ulsdir) {
1.489.2.25 raeburn 1469: unless (($ulsdir =~ m{/home/httpd/html/(res/$LONCAPA::match_domain|userfiles/)}) ||
1.489.2.23 raeburn 1470: ($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:
1.489.2.25 raeburn 1529: # (a) /home/httpd/html/res/<domain>
1.489.2.23 raeburn 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 $ulsdir) {
1.489.2.25 raeburn 1565: unless (($ulsdir =~ m{/home/httpd/html/(res/$LONCAPA::match_domain|userfiles/)}) ||
1.489.2.23 raeburn 1566: ($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:
1.489.2.25 raeburn 1618: # (a) /home/httpd/html/res/<domain>
1.489.2.23 raeburn 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) || ($getuserdir) ||
1.489.2.25 raeburn 1703: ($ulsdir =~ m{/home/httpd/html/(res/$LONCAPA::match_domain|userfiles/)}) ||
1.489.2.23 raeburn 1704: ($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 {
1.489.2.26! raeburn 2154: my %domdefaults = &Apache::lonnet::get_domain_defaults($domain);
! 2155: my $defaultcost = $domdefaults{'intauth_cost'};
1.489.2.21 raeburn 2156: if (($defaultcost eq '') || ($defaultcost =~ /D/)) {
2157: $cost = 10;
2158: } else {
2159: $cost = $defaultcost;
2160: }
2161: # Generate random 16-octet base64 salt
2162: $salt = "";
2163: $salt .= pack("C", int rand(256)) for 1..16;
2164: }
2165: my $hash = &Crypt::Eksblowfish::Bcrypt::bcrypt_hash({
2166: key_nul => 1,
2167: cost => $cost,
2168: salt => $salt,
2169: }, Digest::SHA::sha512(Encode::encode('UTF-8',$plainpass)));
2170:
2171: my $result = join("!", "", "bcrypt", sprintf("%02d",$cost),
2172: &Crypt::Eksblowfish::Bcrypt::en_base64($salt).
2173: &Crypt::Eksblowfish::Bcrypt::en_base64($hash));
2174: return $result;
2175: }
2176:
1.225 foxr 2177: #
2178: # Create a new user. User in this case means a lon-capa user.
2179: # The user must either already exist in some authentication realm
2180: # like kerberos or the /etc/passwd. If not, a user completely local to
2181: # this loncapa system is created.
2182: #
2183: # Parameters:
2184: # $cmd - The command that got us here.
2185: # $tail - Tail of the command (remaining parameters).
2186: # $client - File descriptor connected to client.
2187: # Returns
2188: # 0 - Requested to exit, caller should shut down.
2189: # 1 - Continue processing.
2190: # Implicit inputs:
2191: # The authentication systems describe above have their own forms of implicit
2192: # input into the authentication process that are described above.
2193: sub add_user_handler {
2194:
2195: my ($cmd, $tail, $client) = @_;
2196:
2197:
2198: my ($udom,$uname,$umode,$npass)=split(/:/,$tail);
2199: my $userinput = $cmd.":".$tail; # Reconstruct the full request line.
2200:
2201: &Debug("cmd =".$cmd." $udom =".$udom." uname=".$uname);
2202:
2203:
2204: if($udom eq $currentdomainid) { # Reject new users for other domains...
2205:
2206: my $oldumask=umask(0077);
2207: chomp($npass);
2208: $npass=&unescape($npass);
2209: my $passfilename = &password_path($udom, $uname);
2210: &Debug("Password file created will be:".$passfilename);
2211: if (-e $passfilename) {
2212: &Failure( $client, "already_exists\n", $userinput);
2213: } else {
2214: my $fperror='';
1.264 albertel 2215: if (!&mkpath($passfilename)) {
2216: $fperror="error: ".($!+0)." mkdir failed while attempting "
2217: ."makeuser";
1.225 foxr 2218: }
2219: unless ($fperror) {
1.489.2.21 raeburn 2220: my $result=&make_passwd_file($uname,$udom,$umode,$npass,
2221: $passfilename,'makeuser');
1.390 raeburn 2222: &Reply($client,\$result, $userinput); #BUGBUG - could be fail
1.225 foxr 2223: } else {
1.387 albertel 2224: &Failure($client, \$fperror, $userinput);
1.225 foxr 2225: }
2226: }
2227: umask($oldumask);
2228: } else {
2229: &Failure($client, "not_right_domain\n",
2230: $userinput); # Even if we are multihomed.
2231:
2232: }
2233: return 1;
2234:
2235: }
2236: ®ister_handler("makeuser", \&add_user_handler, 1, 1, 0);
2237:
2238: #
2239: # Change the authentication method of a user. Note that this may
2240: # also implicitly change the user's password if, for example, the user is
2241: # joining an existing authentication realm. Known authentication realms at
2242: # this time are:
2243: # internal - Purely internal password file (only loncapa knows this user)
2244: # local - Institutionally written authentication module.
2245: # unix - Unix user (/etc/passwd with or without /etc/shadow).
2246: # kerb4 - kerberos version 4
2247: # kerb5 - kerberos version 5
2248: #
2249: # Parameters:
2250: # $cmd - The command that got us here.
2251: # $tail - Tail of the command (remaining parameters).
2252: # $client - File descriptor connected to client.
2253: # Returns
2254: # 0 - Requested to exit, caller should shut down.
2255: # 1 - Continue processing.
2256: # Implicit inputs:
2257: # The authentication systems describe above have their own forms of implicit
2258: # input into the authentication process that are described above.
1.287 foxr 2259: # NOTE:
2260: # This is also used to change the authentication credential values (e.g. passwd).
2261: #
1.225 foxr 2262: #
2263: sub change_authentication_handler {
2264:
2265: my ($cmd, $tail, $client) = @_;
2266:
2267: my $userinput = "$cmd:$tail"; # Reconstruct user input.
2268:
2269: my ($udom,$uname,$umode,$npass)=split(/:/,$tail);
2270: &Debug("cmd = ".$cmd." domain= ".$udom."uname =".$uname." umode= ".$umode);
2271: if ($udom ne $currentdomainid) {
2272: &Failure( $client, "not_right_domain\n", $client);
2273: } else {
2274:
2275: chomp($npass);
2276:
2277: $npass=&unescape($npass);
1.261 foxr 2278: my $oldauth = &get_auth_type($udom, $uname); # Get old auth info.
1.225 foxr 2279: my $passfilename = &password_path($udom, $uname);
2280: if ($passfilename) { # Not allowed to create a new user!!
1.287 foxr 2281: # If just changing the unix passwd. need to arrange to run
1.489.2.8 raeburn 2282: # passwd since otherwise make_passwd_file will fail as
2283: # creation of unix authenticated users is no longer supported
2284: # except from the command line, when running make_domain_coordinator.pl
1.287 foxr 2285:
2286: if(($oldauth =~/^unix/) && ($umode eq "unix")) {
2287: my $result = &change_unix_password($uname, $npass);
2288: &logthis("Result of password change for $uname: ".$result);
2289: if ($result eq "ok") {
1.489.2.21 raeburn 2290: &update_passwd_history($uname,$udom,$umode,'changeuserauth');
1.390 raeburn 2291: &Reply($client, \$result);
1.288 albertel 2292: } else {
1.387 albertel 2293: &Failure($client, \$result);
1.287 foxr 2294: }
1.288 albertel 2295: } else {
1.489.2.21 raeburn 2296: my $result=&make_passwd_file($uname,$udom,$umode,$npass,
2297: $passfilename,'changeuserauth');
1.287 foxr 2298: #
2299: # If the current auth mode is internal, and the old auth mode was
2300: # unix, or krb*, and the user is an author for this domain,
2301: # re-run manage_permissions for that role in order to be able
2302: # to take ownership of the construction space back to www:www
2303: #
1.489.2.8 raeburn 2304:
2305:
1.387 albertel 2306: &Reply($client, \$result, $userinput);
1.261 foxr 2307: }
2308:
2309:
1.225 foxr 2310: } else {
1.251 foxr 2311: &Failure($client, "non_authorized\n", $userinput); # Fail the user now.
1.225 foxr 2312: }
2313: }
2314: return 1;
2315: }
2316: ®ister_handler("changeuserauth", \&change_authentication_handler, 1,1, 0);
2317:
1.489.2.21 raeburn 2318: sub update_passwd_history {
2319: my ($uname,$udom,$umode,$context) = @_;
2320: my $proname=&propath($udom,$uname);
2321: my $now = time;
2322: if (open(my $fh,">>$proname/passwd.log")) {
2323: print $fh "$now:$umode:$context\n";
2324: close($fh);
2325: }
2326: return;
2327: }
2328:
1.225 foxr 2329: #
2330: # Determines if this is the home server for a user. The home server
2331: # for a user will have his/her lon-capa passwd file. Therefore all we need
2332: # to do is determine if this file exists.
2333: #
2334: # Parameters:
2335: # $cmd - The command that got us here.
2336: # $tail - Tail of the command (remaining parameters).
2337: # $client - File descriptor connected to client.
2338: # Returns
2339: # 0 - Requested to exit, caller should shut down.
2340: # 1 - Continue processing.
2341: # Implicit inputs:
2342: # The authentication systems describe above have their own forms of implicit
2343: # input into the authentication process that are described above.
2344: #
2345: sub is_home_handler {
2346: my ($cmd, $tail, $client) = @_;
2347:
2348: my $userinput = "$cmd:$tail";
2349:
2350: my ($udom,$uname)=split(/:/,$tail);
2351: chomp($uname);
2352: my $passfile = &password_filename($udom, $uname);
2353: if($passfile) {
2354: &Reply( $client, "found\n", $userinput);
2355: } else {
2356: &Failure($client, "not_found\n", $userinput);
2357: }
2358: return 1;
2359: }
2360: ®ister_handler("home", \&is_home_handler, 0,1,0);
2361:
2362: #
1.434 www 2363: # Process an update request for a resource.
2364: # A resource has been modified that we hold a subscription to.
1.225 foxr 2365: # If the resource is not local, then we must update, or at least invalidate our
2366: # cached copy of the resource.
2367: # Parameters:
2368: # $cmd - The command that got us here.
2369: # $tail - Tail of the command (remaining parameters).
2370: # $client - File descriptor connected to client.
2371: # Returns
2372: # 0 - Requested to exit, caller should shut down.
2373: # 1 - Continue processing.
2374: # Implicit inputs:
2375: # The authentication systems describe above have their own forms of implicit
2376: # input into the authentication process that are described above.
2377: #
2378: sub update_resource_handler {
2379:
2380: my ($cmd, $tail, $client) = @_;
2381:
2382: my $userinput = "$cmd:$tail";
2383:
2384: my $fname= $tail; # This allows interactive testing
2385:
2386:
2387: my $ownership=ishome($fname);
2388: if ($ownership eq 'not_owner') {
2389: if (-e $fname) {
1.434 www 2390: # Delete preview file, if exists
2391: unlink("$fname.tmp");
2392: # Get usage stats
1.225 foxr 2393: my ($dev,$ino,$mode,$nlink,$uid,$gid,$rdev,$size,
2394: $atime,$mtime,$ctime,$blksize,$blocks)=stat($fname);
2395: my $now=time;
2396: my $since=$now-$atime;
1.434 www 2397: # If the file has not been used within lonExpire seconds,
2398: # unsubscribe from it and delete local copy
1.225 foxr 2399: if ($since>$perlvar{'lonExpire'}) {
1.365 albertel 2400: my $reply=&Apache::lonnet::reply("unsub:$fname","$clientname");
1.308 albertel 2401: &devalidate_meta_cache($fname);
1.225 foxr 2402: unlink("$fname");
1.334 albertel 2403: unlink("$fname.meta");
1.225 foxr 2404: } else {
1.434 www 2405: # Yes, this is in active use. Get a fresh copy. Since it might be in
2406: # very active use and huge (like a movie), copy it to "in.transfer" filename first.
1.225 foxr 2407: my $transname="$fname.in.transfer";
1.365 albertel 2408: my $remoteurl=&Apache::lonnet::reply("sub:$fname","$clientname");
1.225 foxr 2409: my $response;
1.455 www 2410: # FIXME: cannot replicate files that take more than two minutes to transfer?
2411: # alarm(120);
2412: # FIXME: this should use the LWP mechanism, not internal alarms.
2413: alarm(1200);
1.225 foxr 2414: {
2415: my $ua=new LWP::UserAgent;
2416: my $request=new HTTP::Request('GET',"$remoteurl");
2417: $response=$ua->request($request,$transname);
2418: }
2419: alarm(0);
2420: if ($response->is_error()) {
1.455 www 2421: # FIXME: we should probably clean up here instead of just whine
1.225 foxr 2422: unlink($transname);
2423: my $message=$response->status_line;
2424: &logthis("LWP GET: $message for $fname ($remoteurl)");
2425: } else {
2426: if ($remoteurl!~/\.meta$/) {
1.455 www 2427: # FIXME: isn't there an internal LWP mechanism for this?
1.225 foxr 2428: alarm(120);
2429: {
2430: my $ua=new LWP::UserAgent;
2431: my $mrequest=new HTTP::Request('GET',$remoteurl.'.meta');
2432: my $mresponse=$ua->request($mrequest,$fname.'.meta');
2433: if ($mresponse->is_error()) {
2434: unlink($fname.'.meta');
2435: }
2436: }
2437: alarm(0);
2438: }
1.434 www 2439: # we successfully transfered, copy file over to real name
1.225 foxr 2440: rename($transname,$fname);
1.308 albertel 2441: &devalidate_meta_cache($fname);
1.225 foxr 2442: }
2443: }
2444: &Reply( $client, "ok\n", $userinput);
2445: } else {
2446: &Failure($client, "not_found\n", $userinput);
2447: }
2448: } else {
2449: &Failure($client, "rejected\n", $userinput);
2450: }
2451: return 1;
2452: }
2453: ®ister_handler("update", \&update_resource_handler, 0 ,1, 0);
2454:
1.308 albertel 2455: sub devalidate_meta_cache {
2456: my ($url) = @_;
2457: use Cache::Memcached;
2458: my $memcache = new Cache::Memcached({'servers'=>['127.0.0.1:11211']});
1.365 albertel 2459: $url = &Apache::lonnet::declutter($url);
1.308 albertel 2460: $url =~ s-\.meta$--;
2461: my $id = &escape('meta:'.$url);
2462: $memcache->delete($id);
2463: }
2464:
1.225 foxr 2465: #
1.226 foxr 2466: # Fetch a user file from a remote server to the user's home directory
2467: # userfiles subdir.
1.225 foxr 2468: # Parameters:
2469: # $cmd - The command that got us here.
2470: # $tail - Tail of the command (remaining parameters).
2471: # $client - File descriptor connected to client.
2472: # Returns
2473: # 0 - Requested to exit, caller should shut down.
2474: # 1 - Continue processing.
2475: #
2476: sub fetch_user_file_handler {
2477:
2478: my ($cmd, $tail, $client) = @_;
2479:
2480: my $userinput = "$cmd:$tail";
2481: my $fname = $tail;
1.232 foxr 2482: my ($udom,$uname,$ufile) = ($fname =~ m|^([^/]+)/([^/]+)/(.+)$|);
1.225 foxr 2483: my $udir=&propath($udom,$uname).'/userfiles';
2484: unless (-e $udir) {
2485: mkdir($udir,0770);
2486: }
1.232 foxr 2487: Debug("fetch user file for $fname");
1.225 foxr 2488: if (-e $udir) {
2489: $ufile=~s/^[\.\~]+//;
1.232 foxr 2490:
2491: # IF necessary, create the path right down to the file.
2492: # Note that any regular files in the way of this path are
2493: # wiped out to deal with some earlier folly of mine.
2494:
1.267 raeburn 2495: if (!&mkpath($udir.'/'.$ufile)) {
1.264 albertel 2496: &Failure($client, "unable_to_create\n", $userinput);
1.232 foxr 2497: }
2498:
1.225 foxr 2499: my $destname=$udir.'/'.$ufile;
2500: my $transname=$udir.'/'.$ufile.'.in.transit';
1.476 raeburn 2501: my $clientprotocol=$Apache::lonnet::protocol{$clientname};
2502: $clientprotocol = 'http' if ($clientprotocol ne 'https');
1.486 raeburn 2503: my $clienthost = &Apache::lonnet::hostname($clientname);
2504: my $remoteurl=$clientprotocol.'://'.$clienthost.'/userfiles/'.$fname;
1.225 foxr 2505: my $response;
1.232 foxr 2506: Debug("Remote URL : $remoteurl Transfername $transname Destname: $destname");
1.225 foxr 2507: alarm(120);
2508: {
2509: my $ua=new LWP::UserAgent;
2510: my $request=new HTTP::Request('GET',"$remoteurl");
2511: $response=$ua->request($request,$transname);
2512: }
2513: alarm(0);
2514: if ($response->is_error()) {
2515: unlink($transname);
2516: my $message=$response->status_line;
2517: &logthis("LWP GET: $message for $fname ($remoteurl)");
2518: &Failure($client, "failed\n", $userinput);
2519: } else {
1.232 foxr 2520: Debug("Renaming $transname to $destname");
1.225 foxr 2521: if (!rename($transname,$destname)) {
2522: &logthis("Unable to move $transname to $destname");
2523: unlink($transname);
2524: &Failure($client, "failed\n", $userinput);
2525: } else {
1.489.2.2 raeburn 2526: if ($fname =~ /^default.+\.(page|sequence)$/) {
2527: my ($major,$minor) = split(/\./,$clientversion);
2528: if (($major < 2) || ($major == 2 && $minor < 11)) {
2529: my $now = time;
2530: &Apache::lonnet::do_cache_new('crschange',$udom.'_'.$uname,$now,600);
2531: my $key = &escape('internal.contentchange');
2532: my $what = "$key=$now";
2533: my $hashref = &tie_user_hash($udom,$uname,'environment',
2534: &GDBM_WRCREAT(),"P",$what);
2535: if ($hashref) {
2536: $hashref->{$key}=$now;
2537: if (!&untie_user_hash($hashref)) {
2538: &logthis("error: ".($!+0)." untie (GDBM) failed ".
2539: "when updating internal.contentchange");
2540: }
2541: }
2542: }
2543: }
1.225 foxr 2544: &Reply($client, "ok\n", $userinput);
2545: }
2546: }
2547: } else {
2548: &Failure($client, "not_home\n", $userinput);
2549: }
2550: return 1;
2551: }
2552: ®ister_handler("fetchuserfile", \&fetch_user_file_handler, 0, 1, 0);
2553:
1.226 foxr 2554: #
2555: # Remove a file from a user's home directory userfiles subdirectory.
2556: # Parameters:
2557: # cmd - the Lond request keyword that got us here.
2558: # tail - the part of the command past the keyword.
2559: # client- File descriptor connected with the client.
2560: #
2561: # Returns:
2562: # 1 - Continue processing.
2563: sub remove_user_file_handler {
2564: my ($cmd, $tail, $client) = @_;
2565:
2566: my ($fname) = split(/:/, $tail); # Get rid of any tailing :'s lonc may have sent.
2567:
2568: my ($udom,$uname,$ufile) = ($fname =~ m|^([^/]+)/([^/]+)/(.+)$|);
2569: if ($ufile =~m|/\.\./|) {
2570: # any files paths with /../ in them refuse
2571: # to deal with
2572: &Failure($client, "refused\n", "$cmd:$tail");
2573: } else {
2574: my $udir = &propath($udom,$uname);
2575: if (-e $udir) {
2576: my $file=$udir.'/userfiles/'.$ufile;
2577: if (-e $file) {
1.253 foxr 2578: #
2579: # If the file is a regular file unlink is fine...
1.489.2.19 raeburn 2580: # However it's possible the client wants a dir
2581: # removed, in which case rmdir is more appropriate
2582: # Note: rmdir will only remove an empty directory.
1.253 foxr 2583: #
1.240 banghart 2584: if (-f $file){
1.241 albertel 2585: unlink($file);
1.489.2.19 raeburn 2586: # for html files remove the associated .bak file
2587: # which may have been created by the editor.
2588: if ($ufile =~ m{^((docs|supplemental)/(?:\d+|default)/\d+(?:|/.+)/)[^/]+\.x?html?$}i) {
2589: my $path = $1;
2590: if (-e $file.'.bak') {
2591: unlink($file.'.bak');
2592: }
2593: }
1.241 albertel 2594: } elsif(-d $file) {
2595: rmdir($file);
1.240 banghart 2596: }
1.226 foxr 2597: if (-e $file) {
1.253 foxr 2598: # File is still there after we deleted it ?!?
2599:
1.226 foxr 2600: &Failure($client, "failed\n", "$cmd:$tail");
2601: } else {
2602: &Reply($client, "ok\n", "$cmd:$tail");
2603: }
2604: } else {
2605: &Failure($client, "not_found\n", "$cmd:$tail");
2606: }
2607: } else {
2608: &Failure($client, "not_home\n", "$cmd:$tail");
2609: }
2610: }
2611: return 1;
2612: }
2613: ®ister_handler("removeuserfile", \&remove_user_file_handler, 0,1,0);
2614:
1.236 albertel 2615: #
2616: # make a directory in a user's home directory userfiles subdirectory.
2617: # Parameters:
2618: # cmd - the Lond request keyword that got us here.
2619: # tail - the part of the command past the keyword.
2620: # client- File descriptor connected with the client.
2621: #
2622: # Returns:
2623: # 1 - Continue processing.
2624: sub mkdir_user_file_handler {
2625: my ($cmd, $tail, $client) = @_;
2626:
2627: my ($dir) = split(/:/, $tail); # Get rid of any tailing :'s lonc may have sent.
2628: $dir=&unescape($dir);
2629: my ($udom,$uname,$ufile) = ($dir =~ m|^([^/]+)/([^/]+)/(.+)$|);
2630: if ($ufile =~m|/\.\./|) {
2631: # any files paths with /../ in them refuse
2632: # to deal with
2633: &Failure($client, "refused\n", "$cmd:$tail");
2634: } else {
2635: my $udir = &propath($udom,$uname);
2636: if (-e $udir) {
1.264 albertel 2637: my $newdir=$udir.'/userfiles/'.$ufile.'/';
2638: if (!&mkpath($newdir)) {
2639: &Failure($client, "failed\n", "$cmd:$tail");
1.236 albertel 2640: }
1.264 albertel 2641: &Reply($client, "ok\n", "$cmd:$tail");
1.236 albertel 2642: } else {
2643: &Failure($client, "not_home\n", "$cmd:$tail");
2644: }
2645: }
2646: return 1;
2647: }
2648: ®ister_handler("mkdiruserfile", \&mkdir_user_file_handler, 0,1,0);
2649:
1.237 albertel 2650: #
2651: # rename a file in a user's home directory userfiles subdirectory.
2652: # Parameters:
2653: # cmd - the Lond request keyword that got us here.
2654: # tail - the part of the command past the keyword.
2655: # client- File descriptor connected with the client.
2656: #
2657: # Returns:
2658: # 1 - Continue processing.
2659: sub rename_user_file_handler {
2660: my ($cmd, $tail, $client) = @_;
2661:
2662: my ($udom,$uname,$old,$new) = split(/:/, $tail);
2663: $old=&unescape($old);
2664: $new=&unescape($new);
2665: if ($new =~m|/\.\./| || $old =~m|/\.\./|) {
2666: # any files paths with /../ in them refuse to deal with
2667: &Failure($client, "refused\n", "$cmd:$tail");
2668: } else {
2669: my $udir = &propath($udom,$uname);
2670: if (-e $udir) {
2671: my $oldfile=$udir.'/userfiles/'.$old;
2672: my $newfile=$udir.'/userfiles/'.$new;
2673: if (-e $newfile) {
2674: &Failure($client, "exists\n", "$cmd:$tail");
2675: } elsif (! -e $oldfile) {
2676: &Failure($client, "not_found\n", "$cmd:$tail");
2677: } else {
2678: if (!rename($oldfile,$newfile)) {
2679: &Failure($client, "failed\n", "$cmd:$tail");
2680: } else {
2681: &Reply($client, "ok\n", "$cmd:$tail");
2682: }
2683: }
2684: } else {
2685: &Failure($client, "not_home\n", "$cmd:$tail");
2686: }
2687: }
2688: return 1;
2689: }
2690: ®ister_handler("renameuserfile", \&rename_user_file_handler, 0,1,0);
2691:
1.227 foxr 2692: #
1.382 albertel 2693: # Checks if the specified user has an active session on the server
2694: # return ok if so, not_found if not
2695: #
2696: # Parameters:
2697: # cmd - The request keyword that dispatched to tus.
2698: # tail - The tail of the request (colon separated parameters).
2699: # client - Filehandle open on the client.
2700: # Return:
2701: # 1.
2702: sub user_has_session_handler {
2703: my ($cmd, $tail, $client) = @_;
2704:
2705: my ($udom, $uname) = map { &unescape($_) } (split(/:/, $tail));
2706:
2707: opendir(DIR,$perlvar{'lonIDsDir'});
2708: my $filename;
2709: while ($filename=readdir(DIR)) {
2710: last if ($filename=~/^\Q$uname\E_\d+_\Q$udom\E_/);
2711: }
2712: if ($filename) {
2713: &Reply($client, "ok\n", "$cmd:$tail");
2714: } else {
2715: &Failure($client, "not_found\n", "$cmd:$tail");
2716: }
2717: return 1;
2718:
2719: }
2720: ®ister_handler("userhassession", \&user_has_session_handler, 0,1,0);
2721:
2722: #
1.263 albertel 2723: # Authenticate access to a user file by checking that the token the user's
2724: # passed also exists in their session file
1.227 foxr 2725: #
2726: # Parameters:
2727: # cmd - The request keyword that dispatched to tus.
2728: # tail - The tail of the request (colon separated parameters).
2729: # client - Filehandle open on the client.
2730: # Return:
2731: # 1.
2732: sub token_auth_user_file_handler {
2733: my ($cmd, $tail, $client) = @_;
2734:
2735: my ($fname, $session) = split(/:/, $tail);
2736:
2737: chomp($session);
1.393 raeburn 2738: my $reply="non_auth";
1.343 albertel 2739: my $file = $perlvar{'lonIDsDir'}.'/'.$session.'.id';
2740: if (open(ENVIN,"$file")) {
1.332 albertel 2741: flock(ENVIN,LOCK_SH);
1.343 albertel 2742: tie(my %disk_env,'GDBM_File',"$file",&GDBM_READER(),0640);
2743: if (exists($disk_env{"userfile.$fname"})) {
1.393 raeburn 2744: $reply="ok";
1.343 albertel 2745: } else {
2746: foreach my $envname (keys(%disk_env)) {
2747: if ($envname=~ m|^userfile\.\Q$fname\E|) {
1.393 raeburn 2748: $reply="ok";
1.343 albertel 2749: last;
2750: }
2751: }
1.227 foxr 2752: }
1.343 albertel 2753: untie(%disk_env);
1.227 foxr 2754: close(ENVIN);
1.387 albertel 2755: &Reply($client, \$reply, "$cmd:$tail");
1.227 foxr 2756: } else {
2757: &Failure($client, "invalid_token\n", "$cmd:$tail");
2758: }
2759: return 1;
2760:
2761: }
2762: ®ister_handler("tokenauthuserfile", \&token_auth_user_file_handler, 0,1,0);
1.229 foxr 2763:
2764: #
2765: # Unsubscribe from a resource.
2766: #
2767: # Parameters:
2768: # $cmd - The command that got us here.
2769: # $tail - Tail of the command (remaining parameters).
2770: # $client - File descriptor connected to client.
2771: # Returns
2772: # 0 - Requested to exit, caller should shut down.
2773: # 1 - Continue processing.
2774: #
2775: sub unsubscribe_handler {
2776: my ($cmd, $tail, $client) = @_;
2777:
2778: my $userinput= "$cmd:$tail";
2779:
2780: my ($fname) = split(/:/,$tail); # Split in case there's extrs.
2781:
2782: &Debug("Unsubscribing $fname");
2783: if (-e $fname) {
2784: &Debug("Exists");
2785: &Reply($client, &unsub($fname,$clientip), $userinput);
2786: } else {
2787: &Failure($client, "not_found\n", $userinput);
2788: }
2789: return 1;
2790: }
2791: ®ister_handler("unsub", \&unsubscribe_handler, 0, 1, 0);
1.263 albertel 2792:
1.230 foxr 2793: # Subscribe to a resource
2794: #
2795: # Parameters:
2796: # $cmd - The command that got us here.
2797: # $tail - Tail of the command (remaining parameters).
2798: # $client - File descriptor connected to client.
2799: # Returns
2800: # 0 - Requested to exit, caller should shut down.
2801: # 1 - Continue processing.
2802: #
2803: sub subscribe_handler {
2804: my ($cmd, $tail, $client)= @_;
2805:
2806: my $userinput = "$cmd:$tail";
2807:
2808: &Reply( $client, &subscribe($userinput,$clientip), $userinput);
2809:
2810: return 1;
2811: }
2812: ®ister_handler("sub", \&subscribe_handler, 0, 1, 0);
2813:
2814: #
1.379 albertel 2815: # Determine the latest version of a resource (it looks for the highest
2816: # past version and then returns that +1)
1.230 foxr 2817: #
2818: # Parameters:
2819: # $cmd - The command that got us here.
2820: # $tail - Tail of the command (remaining parameters).
1.379 albertel 2821: # (Should consist of an absolute path to a file)
1.230 foxr 2822: # $client - File descriptor connected to client.
2823: # Returns
2824: # 0 - Requested to exit, caller should shut down.
2825: # 1 - Continue processing.
2826: #
2827: sub current_version_handler {
2828: my ($cmd, $tail, $client) = @_;
2829:
2830: my $userinput= "$cmd:$tail";
2831:
2832: my $fname = $tail;
2833: &Reply( $client, ¤tversion($fname)."\n", $userinput);
2834: return 1;
2835:
2836: }
2837: ®ister_handler("currentversion", \¤t_version_handler, 0, 1, 0);
2838:
2839: # Make an entry in a user's activity log.
2840: #
2841: # Parameters:
2842: # $cmd - The command that got us here.
2843: # $tail - Tail of the command (remaining parameters).
2844: # $client - File descriptor connected to client.
2845: # Returns
2846: # 0 - Requested to exit, caller should shut down.
2847: # 1 - Continue processing.
2848: #
2849: sub activity_log_handler {
2850: my ($cmd, $tail, $client) = @_;
2851:
2852:
2853: my $userinput= "$cmd:$tail";
2854:
2855: my ($udom,$uname,$what)=split(/:/,$tail);
2856: chomp($what);
2857: my $proname=&propath($udom,$uname);
2858: my $now=time;
2859: my $hfh;
2860: if ($hfh=IO::File->new(">>$proname/activity.log")) {
2861: print $hfh "$now:$clientname:$what\n";
2862: &Reply( $client, "ok\n", $userinput);
2863: } else {
2864: &Failure($client, "error: ".($!+0)." IO::File->new Failed "
2865: ."while attempting log\n",
2866: $userinput);
2867: }
2868:
2869: return 1;
2870: }
1.263 albertel 2871: ®ister_handler("log", \&activity_log_handler, 0, 1, 0);
1.230 foxr 2872:
2873: #
2874: # Put a namespace entry in a user profile hash.
2875: # My druthers would be for this to be an encrypted interaction too.
2876: # anything that might be an inadvertent covert channel about either
2877: # user authentication or user personal information....
2878: #
2879: # Parameters:
2880: # $cmd - The command that got us here.
2881: # $tail - Tail of the command (remaining parameters).
2882: # $client - File descriptor connected to client.
2883: # Returns
2884: # 0 - Requested to exit, caller should shut down.
2885: # 1 - Continue processing.
2886: #
2887: sub put_user_profile_entry {
2888: my ($cmd, $tail, $client) = @_;
1.229 foxr 2889:
1.230 foxr 2890: my $userinput = "$cmd:$tail";
2891:
1.242 raeburn 2892: my ($udom,$uname,$namespace,$what) =split(/:/,$tail,4);
1.230 foxr 2893: if ($namespace ne 'roles') {
2894: chomp($what);
2895: my $hashref = &tie_user_hash($udom, $uname, $namespace,
2896: &GDBM_WRCREAT(),"P",$what);
2897: if($hashref) {
2898: my @pairs=split(/\&/,$what);
2899: foreach my $pair (@pairs) {
2900: my ($key,$value)=split(/=/,$pair);
2901: $hashref->{$key}=$value;
2902: }
1.311 albertel 2903: if (&untie_user_hash($hashref)) {
1.230 foxr 2904: &Reply( $client, "ok\n", $userinput);
2905: } else {
2906: &Failure($client, "error: ".($!+0)." untie(GDBM) failed ".
2907: "while attempting put\n",
2908: $userinput);
2909: }
2910: } else {
1.316 albertel 2911: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
1.230 foxr 2912: "while attempting put\n", $userinput);
2913: }
2914: } else {
2915: &Failure( $client, "refused\n", $userinput);
2916: }
2917:
2918: return 1;
2919: }
2920: ®ister_handler("put", \&put_user_profile_entry, 0, 1, 0);
2921:
1.283 albertel 2922: # Put a piece of new data in hash, returns error if entry already exists
2923: # Parameters:
2924: # $cmd - The command that got us here.
2925: # $tail - Tail of the command (remaining parameters).
2926: # $client - File descriptor connected to client.
2927: # Returns
2928: # 0 - Requested to exit, caller should shut down.
2929: # 1 - Continue processing.
2930: #
2931: sub newput_user_profile_entry {
2932: my ($cmd, $tail, $client) = @_;
2933:
2934: my $userinput = "$cmd:$tail";
2935:
2936: my ($udom,$uname,$namespace,$what) =split(/:/,$tail,4);
2937: if ($namespace eq 'roles') {
2938: &Failure( $client, "refused\n", $userinput);
2939: return 1;
2940: }
2941:
2942: chomp($what);
2943:
2944: my $hashref = &tie_user_hash($udom, $uname, $namespace,
2945: &GDBM_WRCREAT(),"N",$what);
2946: if(!$hashref) {
1.316 albertel 2947: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
1.283 albertel 2948: "while attempting put\n", $userinput);
2949: return 1;
2950: }
2951:
2952: my @pairs=split(/\&/,$what);
2953: foreach my $pair (@pairs) {
2954: my ($key,$value)=split(/=/,$pair);
2955: if (exists($hashref->{$key})) {
1.489.2.17 raeburn 2956: if (!&untie_user_hash($hashref)) {
2957: &logthis("error: ".($!+0)." untie (GDBM) failed ".
2958: "while attempting newput - early out as key exists");
2959: }
1.283 albertel 2960: &Failure($client, "key_exists: ".$key."\n",$userinput);
2961: return 1;
2962: }
2963: }
2964:
2965: foreach my $pair (@pairs) {
2966: my ($key,$value)=split(/=/,$pair);
2967: $hashref->{$key}=$value;
2968: }
2969:
1.311 albertel 2970: if (&untie_user_hash($hashref)) {
1.283 albertel 2971: &Reply( $client, "ok\n", $userinput);
2972: } else {
2973: &Failure($client, "error: ".($!+0)." untie(GDBM) failed ".
2974: "while attempting put\n",
2975: $userinput);
2976: }
2977: return 1;
2978: }
2979: ®ister_handler("newput", \&newput_user_profile_entry, 0, 1, 0);
2980:
1.230 foxr 2981: #
2982: # Increment a profile entry in the user history file.
2983: # The history contains keyword value pairs. In this case,
2984: # The value itself is a pair of numbers. The first, the current value
2985: # the second an increment that this function applies to the current
2986: # value.
2987: #
2988: # Parameters:
2989: # $cmd - The command that got us here.
2990: # $tail - Tail of the command (remaining parameters).
2991: # $client - File descriptor connected to client.
2992: # Returns
2993: # 0 - Requested to exit, caller should shut down.
2994: # 1 - Continue processing.
2995: #
2996: sub increment_user_value_handler {
2997: my ($cmd, $tail, $client) = @_;
2998:
2999: my $userinput = "$cmd:$tail";
3000:
3001: my ($udom,$uname,$namespace,$what) =split(/:/,$tail);
3002: if ($namespace ne 'roles') {
3003: chomp($what);
3004: my $hashref = &tie_user_hash($udom, $uname,
3005: $namespace, &GDBM_WRCREAT(),
3006: "P",$what);
3007: if ($hashref) {
3008: my @pairs=split(/\&/,$what);
3009: foreach my $pair (@pairs) {
3010: my ($key,$value)=split(/=/,$pair);
1.284 raeburn 3011: $value = &unescape($value);
1.230 foxr 3012: # We could check that we have a number...
3013: if (! defined($value) || $value eq '') {
3014: $value = 1;
3015: }
3016: $hashref->{$key}+=$value;
1.284 raeburn 3017: if ($namespace eq 'nohist_resourcetracker') {
3018: if ($hashref->{$key} < 0) {
3019: $hashref->{$key} = 0;
3020: }
3021: }
1.230 foxr 3022: }
1.311 albertel 3023: if (&untie_user_hash($hashref)) {
1.230 foxr 3024: &Reply( $client, "ok\n", $userinput);
3025: } else {
3026: &Failure($client, "error: ".($!+0)." untie(GDBM) failed ".
3027: "while attempting inc\n", $userinput);
3028: }
3029: } else {
3030: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
3031: "while attempting inc\n", $userinput);
3032: }
3033: } else {
3034: &Failure($client, "refused\n", $userinput);
3035: }
3036:
3037: return 1;
3038: }
3039: ®ister_handler("inc", \&increment_user_value_handler, 0, 1, 0);
3040:
3041: #
3042: # Put a new role for a user. Roles are LonCAPA's packaging of permissions.
3043: # Each 'role' a user has implies a set of permissions. Adding a new role
3044: # for a person grants the permissions packaged with that role
3045: # to that user when the role is selected.
3046: #
3047: # Parameters:
3048: # $cmd - The command string (rolesput).
3049: # $tail - The remainder of the request line. For rolesput this
3050: # consists of a colon separated list that contains:
3051: # The domain and user that is granting the role (logged).
3052: # The domain and user that is getting the role.
3053: # The roles being granted as a set of & separated pairs.
3054: # each pair a key value pair.
3055: # $client - File descriptor connected to the client.
3056: # Returns:
3057: # 0 - If the daemon should exit
3058: # 1 - To continue processing.
3059: #
3060: #
3061: sub roles_put_handler {
3062: my ($cmd, $tail, $client) = @_;
3063:
3064: my $userinput = "$cmd:$tail";
3065:
3066: my ( $exedom, $exeuser, $udom, $uname, $what) = split(/:/,$tail);
3067:
3068:
3069: my $namespace='roles';
3070: chomp($what);
3071: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3072: &GDBM_WRCREAT(), "P",
3073: "$exedom:$exeuser:$what");
3074: #
3075: # Log the attempt to set a role. The {}'s here ensure that the file
3076: # handle is open for the minimal amount of time. Since the flush
3077: # is done on close this improves the chances the log will be an un-
3078: # corrupted ordered thing.
3079: if ($hashref) {
1.261 foxr 3080: my $pass_entry = &get_auth_type($udom, $uname);
3081: my ($auth_type,$pwd) = split(/:/, $pass_entry);
3082: $auth_type = $auth_type.":";
1.230 foxr 3083: my @pairs=split(/\&/,$what);
3084: foreach my $pair (@pairs) {
3085: my ($key,$value)=split(/=/,$pair);
3086: &manage_permissions($key, $udom, $uname,
1.260 foxr 3087: $auth_type);
1.230 foxr 3088: $hashref->{$key}=$value;
3089: }
1.311 albertel 3090: if (&untie_user_hash($hashref)) {
1.230 foxr 3091: &Reply($client, "ok\n", $userinput);
3092: } else {
3093: &Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ".
3094: "while attempting rolesput\n", $userinput);
3095: }
3096: } else {
3097: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
3098: "while attempting rolesput\n", $userinput);
3099: }
3100: return 1;
3101: }
3102: ®ister_handler("rolesput", \&roles_put_handler, 1,1,0); # Encoded client only.
3103:
3104: #
1.231 foxr 3105: # Deletes (removes) a role for a user. This is equivalent to removing
3106: # a permissions package associated with the role from the user's profile.
3107: #
3108: # Parameters:
3109: # $cmd - The command (rolesdel)
3110: # $tail - The remainder of the request line. This consists
3111: # of:
3112: # The domain and user requesting the change (logged)
3113: # The domain and user being changed.
3114: # The roles being revoked. These are shipped to us
3115: # as a bunch of & separated role name keywords.
3116: # $client - The file handle open on the client.
3117: # Returns:
3118: # 1 - Continue processing
3119: # 0 - Exit.
3120: #
3121: sub roles_delete_handler {
3122: my ($cmd, $tail, $client) = @_;
3123:
3124: my $userinput = "$cmd:$tail";
3125:
3126: my ($exedom,$exeuser,$udom,$uname,$what)=split(/:/,$tail);
3127: &Debug("cmd = ".$cmd." exedom= ".$exedom."user = ".$exeuser." udom=".$udom.
3128: "what = ".$what);
3129: my $namespace='roles';
3130: chomp($what);
3131: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3132: &GDBM_WRCREAT(), "D",
3133: "$exedom:$exeuser:$what");
3134:
3135: if ($hashref) {
3136: my @rolekeys=split(/\&/,$what);
3137:
3138: foreach my $key (@rolekeys) {
3139: delete $hashref->{$key};
3140: }
1.315 albertel 3141: if (&untie_user_hash($hashref)) {
1.231 foxr 3142: &Reply($client, "ok\n", $userinput);
3143: } else {
3144: &Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ".
3145: "while attempting rolesdel\n", $userinput);
3146: }
3147: } else {
3148: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
3149: "while attempting rolesdel\n", $userinput);
3150: }
3151:
3152: return 1;
3153: }
3154: ®ister_handler("rolesdel", \&roles_delete_handler, 1,1, 0); # Encoded client only
3155:
3156: # Unencrypted get from a user's profile database. See
3157: # GetProfileEntryEncrypted for a version that does end-to-end encryption.
3158: # This function retrieves a keyed item from a specific named database in the
3159: # user's directory.
3160: #
3161: # Parameters:
3162: # $cmd - Command request keyword (get).
3163: # $tail - Tail of the command. This is a colon separated list
3164: # consisting of the domain and username that uniquely
3165: # identifies the profile,
3166: # The 'namespace' which selects the gdbm file to
3167: # do the lookup in,
3168: # & separated list of keys to lookup. Note that
3169: # the values are returned as an & separated list too.
3170: # $client - File descriptor open on the client.
3171: # Returns:
3172: # 1 - Continue processing.
3173: # 0 - Exit.
3174: #
3175: sub get_profile_entry {
3176: my ($cmd, $tail, $client) = @_;
3177:
3178: my $userinput= "$cmd:$tail";
3179:
3180: my ($udom,$uname,$namespace,$what) = split(/:/,$tail);
3181: chomp($what);
1.255 foxr 3182:
1.390 raeburn 3183:
1.255 foxr 3184: my $replystring = read_profile($udom, $uname, $namespace, $what);
3185: my ($first) = split(/:/,$replystring);
3186: if($first ne "error") {
1.387 albertel 3187: &Reply($client, \$replystring, $userinput);
1.231 foxr 3188: } else {
1.255 foxr 3189: &Failure($client, $replystring." while attempting get\n", $userinput);
1.231 foxr 3190: }
3191: return 1;
1.255 foxr 3192:
3193:
1.231 foxr 3194: }
3195: ®ister_handler("get", \&get_profile_entry, 0,1,0);
3196:
3197: #
3198: # Process the encrypted get request. Note that the request is sent
3199: # in clear, but the reply is encrypted. This is a small covert channel:
3200: # information about the sensitive keys is given to the snooper. Just not
3201: # information about the values of the sensitive key. Hmm if I wanted to
3202: # know these I'd snoop for the egets. Get the profile item names from them
3203: # and then issue a get for them since there's no enforcement of the
3204: # requirement of an encrypted get for particular profile items. If I
3205: # were re-doing this, I'd force the request to be encrypted as well as the
3206: # reply. I'd also just enforce encrypted transactions for all gets since
3207: # that would prevent any covert channel snooping.
3208: #
3209: # Parameters:
3210: # $cmd - Command keyword of request (eget).
3211: # $tail - Tail of the command. See GetProfileEntry
# for more information about this.
3212: # $client - File open on the client.
3213: # Returns:
3214: # 1 - Continue processing
3215: # 0 - server should exit.
3216: sub get_profile_entry_encrypted {
3217: my ($cmd, $tail, $client) = @_;
3218:
3219: my $userinput = "$cmd:$tail";
3220:
1.339 albertel 3221: my ($udom,$uname,$namespace,$what) = split(/:/,$tail);
1.231 foxr 3222: chomp($what);
1.255 foxr 3223: my $qresult = read_profile($udom, $uname, $namespace, $what);
3224: my ($first) = split(/:/, $qresult);
3225: if($first ne "error") {
3226:
3227: if ($cipher) {
3228: my $cmdlength=length($qresult);
3229: $qresult.=" ";
3230: my $encqresult='';
3231: for(my $encidx=0;$encidx<=$cmdlength;$encidx+=8) {
3232: $encqresult.= unpack("H16",
3233: $cipher->encrypt(substr($qresult,
3234: $encidx,
3235: 8)));
3236: }
3237: &Reply( $client, "enc:$cmdlength:$encqresult\n", $userinput);
3238: } else {
1.231 foxr 3239: &Failure( $client, "error:no_key\n", $userinput);
3240: }
3241: } else {
1.255 foxr 3242: &Failure($client, "$qresult while attempting eget\n", $userinput);
3243:
1.231 foxr 3244: }
3245:
3246: return 1;
3247: }
1.255 foxr 3248: ®ister_handler("eget", \&get_profile_entry_encrypted, 0, 1, 0);
1.263 albertel 3249:
1.231 foxr 3250: #
3251: # Deletes a key in a user profile database.
3252: #
3253: # Parameters:
3254: # $cmd - Command keyword (del).
3255: # $tail - Command tail. IN this case a colon
3256: # separated list containing:
3257: # The domain and user that identifies uniquely
3258: # the identity of the user.
3259: # The profile namespace (name of the profile
3260: # database file).
3261: # & separated list of keywords to delete.
3262: # $client - File open on client socket.
3263: # Returns:
3264: # 1 - Continue processing
3265: # 0 - Exit server.
3266: #
3267: #
3268: sub delete_profile_entry {
3269: my ($cmd, $tail, $client) = @_;
3270:
3271: my $userinput = "cmd:$tail";
3272:
3273: my ($udom,$uname,$namespace,$what) = split(/:/,$tail);
3274: chomp($what);
3275: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3276: &GDBM_WRCREAT(),
3277: "D",$what);
3278: if ($hashref) {
3279: my @keys=split(/\&/,$what);
3280: foreach my $key (@keys) {
3281: delete($hashref->{$key});
3282: }
1.315 albertel 3283: if (&untie_user_hash($hashref)) {
1.231 foxr 3284: &Reply($client, "ok\n", $userinput);
3285: } else {
3286: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
3287: "while attempting del\n", $userinput);
3288: }
3289: } else {
3290: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
3291: "while attempting del\n", $userinput);
3292: }
3293: return 1;
3294: }
3295: ®ister_handler("del", \&delete_profile_entry, 0, 1, 0);
1.263 albertel 3296:
1.231 foxr 3297: #
3298: # List the set of keys that are defined in a profile database file.
3299: # A successful reply from this will contain an & separated list of
3300: # the keys.
3301: # Parameters:
3302: # $cmd - Command request (keys).
3303: # $tail - Remainder of the request, a colon separated
3304: # list containing domain/user that identifies the
3305: # user being queried, and the database namespace
3306: # (database filename essentially).
3307: # $client - File open on the client.
3308: # Returns:
3309: # 1 - Continue processing.
3310: # 0 - Exit the server.
3311: #
3312: sub get_profile_keys {
3313: my ($cmd, $tail, $client) = @_;
3314:
3315: my $userinput = "$cmd:$tail";
3316:
3317: my ($udom,$uname,$namespace)=split(/:/,$tail);
3318: my $qresult='';
3319: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3320: &GDBM_READER());
3321: if ($hashref) {
3322: foreach my $key (keys %$hashref) {
3323: $qresult.="$key&";
3324: }
1.315 albertel 3325: if (&untie_user_hash($hashref)) {
1.231 foxr 3326: $qresult=~s/\&$//;
1.387 albertel 3327: &Reply($client, \$qresult, $userinput);
1.231 foxr 3328: } else {
3329: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
3330: "while attempting keys\n", $userinput);
3331: }
3332: } else {
3333: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
3334: "while attempting keys\n", $userinput);
3335: }
3336:
3337: return 1;
3338: }
3339: ®ister_handler("keys", \&get_profile_keys, 0, 1, 0);
3340:
3341: #
3342: # Dump the contents of a user profile database.
3343: # Note that this constitutes a very large covert channel too since
3344: # the dump will return sensitive information that is not encrypted.
3345: # The naive security assumption is that the session negotiation ensures
3346: # our client is trusted and I don't believe that's assured at present.
3347: # Sure want badly to go to ssl or tls. Of course if my peer isn't really
3348: # a LonCAPA node they could have negotiated an encryption key too so >sigh<.
3349: #
3350: # Parameters:
3351: # $cmd - The command request keyword (currentdump).
3352: # $tail - Remainder of the request, consisting of a colon
3353: # separated list that has the domain/username and
3354: # the namespace to dump (database file).
3355: # $client - file open on the remote client.
3356: # Returns:
3357: # 1 - Continue processing.
3358: # 0 - Exit the server.
3359: #
3360: sub dump_profile_database {
3361: my ($cmd, $tail, $client) = @_;
3362:
3363: my $userinput = "$cmd:$tail";
3364:
3365: my ($udom,$uname,$namespace) = split(/:/,$tail);
3366: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3367: &GDBM_READER());
3368: if ($hashref) {
3369: # Structure of %data:
3370: # $data{$symb}->{$parameter}=$value;
3371: # $data{$symb}->{'v.'.$parameter}=$version;
3372: # since $parameter will be unescaped, we do not
3373: # have to worry about silly parameter names...
3374:
3375: my $qresult='';
3376: my %data = (); # A hash of anonymous hashes..
3377: while (my ($key,$value) = each(%$hashref)) {
3378: my ($v,$symb,$param) = split(/:/,$key);
3379: next if ($v eq 'version' || $symb eq 'keys');
3380: next if (exists($data{$symb}) &&
3381: exists($data{$symb}->{$param}) &&
3382: $data{$symb}->{'v.'.$param} > $v);
3383: $data{$symb}->{$param}=$value;
3384: $data{$symb}->{'v.'.$param}=$v;
3385: }
1.311 albertel 3386: if (&untie_user_hash($hashref)) {
1.231 foxr 3387: while (my ($symb,$param_hash) = each(%data)) {
3388: while(my ($param,$value) = each (%$param_hash)){
3389: next if ($param =~ /^v\./); # Ignore versions...
3390: #
3391: # Just dump the symb=value pairs separated by &
3392: #
3393: $qresult.=$symb.':'.$param.'='.$value.'&';
3394: }
3395: }
3396: chop($qresult);
1.387 albertel 3397: &Reply($client , \$qresult, $userinput);
1.231 foxr 3398: } else {
3399: &Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ".
3400: "while attempting currentdump\n", $userinput);
3401: }
3402: } else {
3403: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
3404: "while attempting currentdump\n", $userinput);
3405: }
3406:
3407: return 1;
3408: }
3409: ®ister_handler("currentdump", \&dump_profile_database, 0, 1, 0);
3410:
3411: #
3412: # Dump a profile database with an optional regular expression
3413: # to match against the keys. In this dump, no effort is made
3414: # to separate symb from version information. Presumably the
3415: # databases that are dumped by this command are of a different
3416: # structure. Need to look at this and improve the documentation of
3417: # both this and the currentdump handler.
3418: # Parameters:
3419: # $cmd - The command keyword.
3420: # $tail - All of the characters after the $cmd:
3421: # These are expected to be a colon
3422: # separated list containing:
3423: # domain/user - identifying the user.
3424: # namespace - identifying the database.
3425: # regexp - optional regular expression
3426: # that is matched against
3427: # database keywords to do
3428: # selective dumps.
1.488 raeburn 3429: # range - optional range of entries
3430: # e.g., 10-20 would return the
3431: # 10th to 19th items, etc.
1.231 foxr 3432: # $client - Channel open on the client.
3433: # Returns:
3434: # 1 - Continue processing.
3435: # Side effects:
3436: # response is written to $client.
3437: #
3438: sub dump_with_regexp {
3439: my ($cmd, $tail, $client) = @_;
3440:
1.489.2.4 raeburn 3441: my $res = LONCAPA::Lond::dump_with_regexp($tail, $clientversion);
1.231 foxr 3442:
1.489.2.4 raeburn 3443: if ($res =~ /^error:/) {
3444: &Failure($client, \$res, "$cmd:$tail");
1.231 foxr 3445: } else {
1.489.2.4 raeburn 3446: &Reply($client, \$res, "$cmd:$tail");
1.231 foxr 3447: }
3448:
3449: return 1;
3450: }
3451: ®ister_handler("dump", \&dump_with_regexp, 0, 1, 0);
3452:
3453: # Store a set of key=value pairs associated with a versioned name.
3454: #
3455: # Parameters:
3456: # $cmd - Request command keyword.
3457: # $tail - Tail of the request. This is a colon
3458: # separated list containing:
3459: # domain/user - User and authentication domain.
3460: # namespace - Name of the database being modified
3461: # rid - Resource keyword to modify.
3462: # what - new value associated with rid.
1.489.2.17 raeburn 3463: # laststore - (optional) version=timestamp
3464: # for most recent transaction for rid
3465: # in namespace, when cstore was called
1.231 foxr 3466: #
3467: # $client - Socket open on the client.
3468: #
3469: #
3470: # Returns:
3471: # 1 (keep on processing).
3472: # Side-Effects:
3473: # Writes to the client
1.489.2.17 raeburn 3474: # Successful storage will cause either 'ok', or, if $laststore was included
3475: # in the tail of the request, and the version number for the last transaction
3476: # is larger than the version in $laststore, delay:$numtrans , where $numtrans
3477: # is the number of store evevnts recorded for rid in namespace since
3478: # lonnet::store() was called by the client.
3479: #
1.231 foxr 3480: sub store_handler {
3481: my ($cmd, $tail, $client) = @_;
3482:
3483: my $userinput = "$cmd:$tail";
3484:
1.489.2.17 raeburn 3485: chomp($tail);
3486: my ($udom,$uname,$namespace,$rid,$what,$laststore) =split(/:/,$tail);
1.231 foxr 3487: if ($namespace ne 'roles') {
3488:
3489: my @pairs=split(/\&/,$what);
3490: my $hashref = &tie_user_hash($udom, $uname, $namespace,
1.268 albertel 3491: &GDBM_WRCREAT(), "S",
1.231 foxr 3492: "$rid:$what");
3493: if ($hashref) {
3494: my $now = time;
1.489.2.17 raeburn 3495: my $numtrans;
3496: if ($laststore) {
3497: my ($previousversion,$previoustime) = split(/\=/,$laststore);
3498: my ($lastversion,$lasttime) = (0,0);
3499: $lastversion = $hashref->{"version:$rid"};
3500: if ($lastversion) {
3501: $lasttime = $hashref->{"$lastversion:$rid:timestamp"};
3502: }
3503: if (($previousversion) && ($previousversion !~ /\D/)) {
3504: if (($lastversion > $previousversion) && ($lasttime >= $previoustime)) {
3505: $numtrans = $lastversion - $previousversion;
3506: }
3507: } elsif ($lastversion) {
3508: $numtrans = $lastversion;
3509: }
3510: if ($numtrans) {
3511: $numtrans =~ s/D//g;
3512: }
3513: }
3514:
1.231 foxr 3515: $hashref->{"version:$rid"}++;
3516: my $version=$hashref->{"version:$rid"};
3517: my $allkeys='';
3518: foreach my $pair (@pairs) {
3519: my ($key,$value)=split(/=/,$pair);
3520: $allkeys.=$key.':';
3521: $hashref->{"$version:$rid:$key"}=$value;
3522: }
3523: $hashref->{"$version:$rid:timestamp"}=$now;
3524: $allkeys.='timestamp';
3525: $hashref->{"$version:keys:$rid"}=$allkeys;
1.311 albertel 3526: if (&untie_user_hash($hashref)) {
1.489.2.17 raeburn 3527: my $msg = 'ok';
3528: if ($numtrans) {
3529: $msg = 'delay:'.$numtrans;
3530: }
3531: &Reply($client, "$msg\n", $userinput);
1.231 foxr 3532: } else {
3533: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
3534: "while attempting store\n", $userinput);
3535: }
3536: } else {
3537: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
3538: "while attempting store\n", $userinput);
3539: }
3540: } else {
3541: &Failure($client, "refused\n", $userinput);
3542: }
3543:
3544: return 1;
3545: }
3546: ®ister_handler("store", \&store_handler, 0, 1, 0);
1.263 albertel 3547:
1.323 albertel 3548: # Modify a set of key=value pairs associated with a versioned name.
3549: #
3550: # Parameters:
3551: # $cmd - Request command keyword.
3552: # $tail - Tail of the request. This is a colon
3553: # separated list containing:
3554: # domain/user - User and authentication domain.
3555: # namespace - Name of the database being modified
3556: # rid - Resource keyword to modify.
3557: # v - Version item to modify
3558: # what - new value associated with rid.
3559: #
3560: # $client - Socket open on the client.
3561: #
3562: #
3563: # Returns:
3564: # 1 (keep on processing).
3565: # Side-Effects:
3566: # Writes to the client
3567: sub putstore_handler {
3568: my ($cmd, $tail, $client) = @_;
3569:
3570: my $userinput = "$cmd:$tail";
3571:
3572: my ($udom,$uname,$namespace,$rid,$v,$what) =split(/:/,$tail);
3573: if ($namespace ne 'roles') {
3574:
3575: chomp($what);
3576: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3577: &GDBM_WRCREAT(), "M",
3578: "$rid:$v:$what");
3579: if ($hashref) {
3580: my $now = time;
3581: my %data = &hash_extract($what);
3582: my @allkeys;
3583: while (my($key,$value) = each(%data)) {
3584: push(@allkeys,$key);
3585: $hashref->{"$v:$rid:$key"} = $value;
3586: }
3587: my $allkeys = join(':',@allkeys);
3588: $hashref->{"$v:keys:$rid"}=$allkeys;
3589:
3590: if (&untie_user_hash($hashref)) {
3591: &Reply($client, "ok\n", $userinput);
3592: } else {
3593: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
3594: "while attempting store\n", $userinput);
3595: }
3596: } else {
3597: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
3598: "while attempting store\n", $userinput);
3599: }
3600: } else {
3601: &Failure($client, "refused\n", $userinput);
3602: }
3603:
3604: return 1;
3605: }
3606: ®ister_handler("putstore", \&putstore_handler, 0, 1, 0);
3607:
3608: sub hash_extract {
3609: my ($str)=@_;
3610: my %hash;
3611: foreach my $pair (split(/\&/,$str)) {
3612: my ($key,$value)=split(/=/,$pair);
3613: $hash{$key}=$value;
3614: }
3615: return (%hash);
3616: }
3617: sub hash_to_str {
3618: my ($hash_ref)=@_;
3619: my $str;
3620: foreach my $key (keys(%$hash_ref)) {
3621: $str.=$key.'='.$hash_ref->{$key}.'&';
3622: }
3623: $str=~s/\&$//;
3624: return $str;
3625: }
3626:
1.231 foxr 3627: #
3628: # Dump out all versions of a resource that has key=value pairs associated
3629: # with it for each version. These resources are built up via the store
3630: # command.
3631: #
3632: # Parameters:
3633: # $cmd - Command keyword.
3634: # $tail - Remainder of the request which consists of:
3635: # domain/user - User and auth. domain.
3636: # namespace - name of resource database.
3637: # rid - Resource id.
3638: # $client - socket open on the client.
3639: #
3640: # Returns:
3641: # 1 indicating the caller should not yet exit.
3642: # Side-effects:
3643: # Writes a reply to the client.
3644: # The reply is a string of the following shape:
3645: # version=current&version:keys=k1:k2...&1:k1=v1&1:k2=v2...
3646: # Where the 1 above represents version 1.
3647: # this continues for all pairs of keys in all versions.
3648: #
3649: #
3650: #
3651: #
3652: sub restore_handler {
3653: my ($cmd, $tail, $client) = @_;
3654:
3655: my $userinput = "$cmd:$tail"; # Only used for logging purposes.
1.351 banghart 3656: my ($udom,$uname,$namespace,$rid) = split(/:/,$tail);
1.352 albertel 3657: $namespace=~s/\//\_/g;
1.350 albertel 3658: $namespace = &LONCAPA::clean_username($namespace);
1.349 albertel 3659:
1.231 foxr 3660: chomp($rid);
3661: my $qresult='';
1.309 albertel 3662: my $hashref = &tie_user_hash($udom, $uname, $namespace, &GDBM_READER());
3663: if ($hashref) {
3664: my $version=$hashref->{"version:$rid"};
1.231 foxr 3665: $qresult.="version=$version&";
3666: my $scope;
3667: for ($scope=1;$scope<=$version;$scope++) {
1.309 albertel 3668: my $vkeys=$hashref->{"$scope:keys:$rid"};
1.231 foxr 3669: my @keys=split(/:/,$vkeys);
3670: my $key;
3671: $qresult.="$scope:keys=$vkeys&";
3672: foreach $key (@keys) {
1.309 albertel 3673: $qresult.="$scope:$key=".$hashref->{"$scope:$rid:$key"}."&";
1.231 foxr 3674: }
3675: }
1.311 albertel 3676: if (&untie_user_hash($hashref)) {
1.231 foxr 3677: $qresult=~s/\&$//;
1.387 albertel 3678: &Reply( $client, \$qresult, $userinput);
1.231 foxr 3679: } else {
3680: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
3681: "while attempting restore\n", $userinput);
3682: }
3683: } else {
3684: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
3685: "while attempting restore\n", $userinput);
3686: }
3687:
3688: return 1;
3689:
3690:
3691: }
3692: ®ister_handler("restore", \&restore_handler, 0,1,0);
1.234 foxr 3693:
3694: #
1.324 raeburn 3695: # Add a chat message to a synchronous discussion board.
1.234 foxr 3696: #
3697: # Parameters:
3698: # $cmd - Request keyword.
3699: # $tail - Tail of the command. A colon separated list
3700: # containing:
3701: # cdom - Domain on which the chat board lives
1.324 raeburn 3702: # cnum - Course containing the chat board.
3703: # newpost - Body of the posting.
3704: # group - Optional group, if chat board is only
3705: # accessible in a group within the course
1.234 foxr 3706: # $client - Socket open on the client.
3707: # Returns:
3708: # 1 - Indicating caller should keep on processing.
3709: #
3710: # Side-effects:
3711: # writes a reply to the client.
3712: #
3713: #
3714: sub send_chat_handler {
3715: my ($cmd, $tail, $client) = @_;
3716:
3717:
3718: my $userinput = "$cmd:$tail";
3719:
1.324 raeburn 3720: my ($cdom,$cnum,$newpost,$group)=split(/\:/,$tail);
3721: &chat_add($cdom,$cnum,$newpost,$group);
1.234 foxr 3722: &Reply($client, "ok\n", $userinput);
3723:
3724: return 1;
3725: }
3726: ®ister_handler("chatsend", \&send_chat_handler, 0, 1, 0);
1.263 albertel 3727:
1.234 foxr 3728: #
1.324 raeburn 3729: # Retrieve the set of chat messages from a discussion board.
1.234 foxr 3730: #
3731: # Parameters:
3732: # $cmd - Command keyword that initiated the request.
3733: # $tail - Remainder of the request after the command
3734: # keyword. In this case a colon separated list of
3735: # chat domain - Which discussion board.
3736: # chat id - Discussion thread(?)
3737: # domain/user - Authentication domain and username
3738: # of the requesting person.
1.324 raeburn 3739: # group - Optional course group containing
3740: # the board.
1.234 foxr 3741: # $client - Socket open on the client program.
3742: # Returns:
3743: # 1 - continue processing
3744: # Side effects:
3745: # Response is written to the client.
3746: #
3747: sub retrieve_chat_handler {
3748: my ($cmd, $tail, $client) = @_;
3749:
3750:
3751: my $userinput = "$cmd:$tail";
3752:
1.324 raeburn 3753: my ($cdom,$cnum,$udom,$uname,$group)=split(/\:/,$tail);
1.234 foxr 3754: my $reply='';
1.324 raeburn 3755: foreach (&get_chat($cdom,$cnum,$udom,$uname,$group)) {
1.234 foxr 3756: $reply.=&escape($_).':';
3757: }
3758: $reply=~s/\:$//;
1.387 albertel 3759: &Reply($client, \$reply, $userinput);
1.234 foxr 3760:
3761:
3762: return 1;
3763: }
3764: ®ister_handler("chatretr", \&retrieve_chat_handler, 0, 1, 0);
3765:
3766: #
3767: # Initiate a query of an sql database. SQL query repsonses get put in
3768: # a file for later retrieval. This prevents sql query results from
3769: # bottlenecking the system. Note that with loncnew, perhaps this is
3770: # less of an issue since multiple outstanding requests can be concurrently
3771: # serviced.
3772: #
3773: # Parameters:
3774: # $cmd - COmmand keyword that initiated the request.
3775: # $tail - Remainder of the command after the keyword.
3776: # For this function, this consists of a query and
3777: # 3 arguments that are self-documentingly labelled
3778: # in the original arg1, arg2, arg3.
3779: # $client - Socket open on the client.
3780: # Return:
3781: # 1 - Indicating processing should continue.
3782: # Side-effects:
3783: # a reply is written to $client.
3784: #
3785: sub send_query_handler {
3786: my ($cmd, $tail, $client) = @_;
3787:
3788:
3789: my $userinput = "$cmd:$tail";
3790:
3791: my ($query,$arg1,$arg2,$arg3)=split(/\:/,$tail);
3792: $query=~s/\n*$//g;
3793: &Reply($client, "". &sql_reply("$clientname\&$query".
3794: "\&$arg1"."\&$arg2"."\&$arg3")."\n",
3795: $userinput);
3796:
3797: return 1;
3798: }
3799: ®ister_handler("querysend", \&send_query_handler, 0, 1, 0);
3800:
3801: #
3802: # Add a reply to an sql query. SQL queries are done asyncrhonously.
3803: # The query is submitted via a "querysend" transaction.
3804: # There it is passed on to the lonsql daemon, queued and issued to
3805: # mysql.
3806: # This transaction is invoked when the sql transaction is complete
3807: # it stores the query results in flie and indicates query completion.
3808: # presumably local software then fetches this response... I'm guessing
3809: # the sequence is: lonc does a querysend, we ask lonsql to do it.
3810: # lonsql on completion of the query interacts with the lond of our
3811: # client to do a query reply storing two files:
3812: # - id - The results of the query.
3813: # - id.end - Indicating the transaction completed.
3814: # NOTE: id is a unique id assigned to the query and querysend time.
3815: # Parameters:
3816: # $cmd - Command keyword that initiated this request.
3817: # $tail - Remainder of the tail. In this case that's a colon
3818: # separated list containing the query Id and the
3819: # results of the query.
3820: # $client - Socket open on the client.
3821: # Return:
3822: # 1 - Indicating that we should continue processing.
3823: # Side effects:
3824: # ok written to the client.
3825: #
3826: sub reply_query_handler {
3827: my ($cmd, $tail, $client) = @_;
3828:
3829:
3830: my $userinput = "$cmd:$tail";
3831:
1.339 albertel 3832: my ($id,$reply)=split(/:/,$tail);
1.234 foxr 3833: my $store;
3834: my $execdir=$perlvar{'lonDaemons'};
3835: if ($store=IO::File->new(">$execdir/tmp/$id")) {
3836: $reply=~s/\&/\n/g;
3837: print $store $reply;
3838: close $store;
3839: my $store2=IO::File->new(">$execdir/tmp/$id.end");
3840: print $store2 "done\n";
3841: close $store2;
3842: &Reply($client, "ok\n", $userinput);
3843: } else {
3844: &Failure($client, "error: ".($!+0)
3845: ." IO::File->new Failed ".
3846: "while attempting queryreply\n", $userinput);
3847: }
3848:
3849:
3850: return 1;
3851: }
3852: ®ister_handler("queryreply", \&reply_query_handler, 0, 1, 0);
3853:
3854: #
3855: # Process the courseidput request. Not quite sure what this means
3856: # at the system level sense. It appears a gdbm file in the
3857: # /home/httpd/lonUsers/$domain/nohist_courseids is tied and
3858: # a set of entries made in that database.
3859: #
3860: # Parameters:
3861: # $cmd - The command keyword that initiated this request.
3862: # $tail - Tail of the command. In this case consists of a colon
3863: # separated list contaning the domain to apply this to and
3864: # an ampersand separated list of keyword=value pairs.
1.272 raeburn 3865: # Each value is a colon separated list that includes:
3866: # description, institutional code and course owner.
3867: # For backward compatibility with versions included
3868: # in LON-CAPA 1.1.X (and earlier) and 1.2.X, institutional
3869: # code and/or course owner are preserved from the existing
3870: # record when writing a new record in response to 1.1 or
3871: # 1.2 implementations of lonnet::flushcourselogs().
3872: #
1.234 foxr 3873: # $client - Socket open on the client.
3874: # Returns:
3875: # 1 - indicating that processing should continue
3876: #
3877: # Side effects:
3878: # reply is written to the client.
3879: #
3880: sub put_course_id_handler {
3881: my ($cmd, $tail, $client) = @_;
3882:
3883:
3884: my $userinput = "$cmd:$tail";
3885:
1.266 raeburn 3886: my ($udom, $what) = split(/:/, $tail,2);
1.234 foxr 3887: chomp($what);
3888: my $now=time;
3889: my @pairs=split(/\&/,$what);
3890:
3891: my $hashref = &tie_domain_hash($udom, "nohist_courseids", &GDBM_WRCREAT());
3892: if ($hashref) {
3893: foreach my $pair (@pairs) {
1.271 raeburn 3894: my ($key,$courseinfo) = split(/=/,$pair,2);
3895: $courseinfo =~ s/=/:/g;
1.384 raeburn 3896: if (defined($hashref->{$key})) {
3897: my $value = &Apache::lonnet::thaw_unescape($hashref->{$key});
3898: if (ref($value) eq 'HASH') {
3899: my @items = ('description','inst_code','owner','type');
3900: my @new_items = split(/:/,$courseinfo,-1);
3901: my %storehash;
3902: for (my $i=0; $i<@new_items; $i++) {
1.391 raeburn 3903: $storehash{$items[$i]} = &unescape($new_items[$i]);
1.384 raeburn 3904: }
3905: $hashref->{$key} =
3906: &Apache::lonnet::freeze_escape(\%storehash);
3907: my $unesc_key = &unescape($key);
3908: $hashref->{&escape('lasttime:'.$unesc_key)} = $now;
3909: next;
1.383 raeburn 3910: }
1.384 raeburn 3911: }
3912: my @current_items = split(/:/,$hashref->{$key},-1);
3913: shift(@current_items); # remove description
3914: pop(@current_items); # remove last access
3915: my $numcurrent = scalar(@current_items);
3916: if ($numcurrent > 3) {
3917: $numcurrent = 3;
3918: }
3919: my @new_items = split(/:/,$courseinfo,-1);
3920: my $numnew = scalar(@new_items);
3921: if ($numcurrent > 0) {
3922: if ($numnew <= $numcurrent) { # flushcourselogs() from pre 2.2
3923: for (my $j=$numcurrent-$numnew; $j>=0; $j--) {
3924: $courseinfo .= ':'.$current_items[$numcurrent-$j-1];
1.333 raeburn 3925: }
1.272 raeburn 3926: }
3927: }
1.384 raeburn 3928: $hashref->{$key}=$courseinfo.':'.$now;
1.234 foxr 3929: }
1.311 albertel 3930: if (&untie_domain_hash($hashref)) {
1.253 foxr 3931: &Reply( $client, "ok\n", $userinput);
1.234 foxr 3932: } else {
1.253 foxr 3933: &Failure($client, "error: ".($!+0)
1.234 foxr 3934: ." untie(GDBM) Failed ".
3935: "while attempting courseidput\n", $userinput);
3936: }
3937: } else {
1.253 foxr 3938: &Failure($client, "error: ".($!+0)
1.234 foxr 3939: ." tie(GDBM) Failed ".
3940: "while attempting courseidput\n", $userinput);
3941: }
3942:
3943: return 1;
3944: }
3945: ®ister_handler("courseidput", \&put_course_id_handler, 0, 1, 0);
3946:
1.383 raeburn 3947: sub put_course_id_hash_handler {
3948: my ($cmd, $tail, $client) = @_;
3949: my $userinput = "$cmd:$tail";
1.384 raeburn 3950: my ($udom,$mode,$what) = split(/:/, $tail,3);
1.383 raeburn 3951: chomp($what);
3952: my $now=time;
3953: my @pairs=split(/\&/,$what);
1.384 raeburn 3954: my $hashref = &tie_domain_hash($udom, "nohist_courseids", &GDBM_WRCREAT());
1.383 raeburn 3955: if ($hashref) {
3956: foreach my $pair (@pairs) {
3957: my ($key,$value)=split(/=/,$pair);
1.384 raeburn 3958: my $unesc_key = &unescape($key);
3959: if ($mode ne 'timeonly') {
3960: if (!defined($hashref->{&escape('lasttime:'.$unesc_key)})) {
3961: my $curritems = &Apache::lonnet::thaw_unescape($key);
3962: if (ref($curritems) ne 'HASH') {
3963: my @current_items = split(/:/,$hashref->{$key},-1);
3964: my $lasttime = pop(@current_items);
3965: $hashref->{&escape('lasttime:'.$unesc_key)} = $lasttime;
3966: } else {
3967: $hashref->{&escape('lasttime:'.$unesc_key)} = '';
3968: }
3969: }
3970: $hashref->{$key} = $value;
3971: }
3972: if ($mode ne 'notime') {
3973: $hashref->{&escape('lasttime:'.$unesc_key)} = $now;
3974: }
1.383 raeburn 3975: }
3976: if (&untie_domain_hash($hashref)) {
3977: &Reply($client, "ok\n", $userinput);
3978: } else {
3979: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
3980: "while attempting courseidputhash\n", $userinput);
3981: }
3982: } else {
3983: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
3984: "while attempting courseidputhash\n", $userinput);
3985: }
3986: return 1;
3987: }
3988: ®ister_handler("courseidputhash", \&put_course_id_hash_handler, 0, 1, 0);
3989:
1.234 foxr 3990: # Retrieves the value of a course id resource keyword pattern
3991: # defined since a starting date. Both the starting date and the
3992: # keyword pattern are optional. If the starting date is not supplied it
3993: # is treated as the beginning of time. If the pattern is not found,
3994: # it is treatred as "." matching everything.
3995: #
3996: # Parameters:
3997: # $cmd - Command keyword that resulted in us being dispatched.
3998: # $tail - The remainder of the command that, in this case, consists
3999: # of a colon separated list of:
4000: # domain - The domain in which the course database is
4001: # defined.
4002: # since - Optional parameter describing the minimum
4003: # time of definition(?) of the resources that
4004: # will match the dump.
4005: # description - regular expression that is used to filter
4006: # the dump. Only keywords matching this regexp
4007: # will be used.
1.272 raeburn 4008: # institutional code - optional supplied code to filter
4009: # the dump. Only courses with an institutional code
4010: # that match the supplied code will be returned.
1.336 raeburn 4011: # owner - optional supplied username and domain of owner to
4012: # filter the dump. Only courses for which the course
4013: # owner matches the supplied username and/or domain
4014: # will be returned. Pre-2.2.0 legacy entries from
4015: # nohist_courseiddump will only contain usernames.
1.384 raeburn 4016: # type - optional parameter for selection
1.418 raeburn 4017: # regexp_ok - if 1 or -1 allow the supplied institutional code
4018: # filter to behave as a regular expression:
4019: # 1 will not exclude the course if the instcode matches the RE
4020: # -1 will exclude the course if the instcode matches the RE
1.384 raeburn 4021: # rtn_as_hash - whether to return the information available for
4022: # each matched item as a frozen hash of all
4023: # key, value pairs in the item's hash, or as a
4024: # colon-separated list of (in order) description,
4025: # institutional code, and course owner.
1.404 raeburn 4026: # selfenrollonly - filter by courses allowing self-enrollment
4027: # now or in the future (selfenrollonly = 1).
4028: # catfilter - filter by course category, assigned to a course
4029: # using manually defined categories (i.e., not
1.407 raeburn 4030: # self-cataloging based on on institutional code).
1.404 raeburn 4031: # showhidden - include course in results even if course
1.407 raeburn 4032: # was set to be excluded from course catalog (DC only).
1.404 raeburn 4033: # caller - if set to 'coursecatalog', courses set to be hidden
4034: # from course catalog will be excluded from results (unless
4035: # overridden by "showhidden".
1.427 raeburn 4036: # cloner - escaped username:domain of course cloner (if picking course to
1.419 raeburn 4037: # clone).
4038: # cc_clone_list - escaped comma separated list of courses for which
4039: # course cloner has active CC role (and so can clone
4040: # automatically).
1.427 raeburn 4041: # cloneonly - filter by courses for which cloner has rights to clone.
4042: # createdbefore - include courses for which creation date preceeded this date.
4043: # createdafter - include courses for which creation date followed this date.
4044: # creationcontext - include courses created in specified context
1.404 raeburn 4045: #
1.445 raeburn 4046: # domcloner - flag to indicate if user can create CCs in course's domain.
1.489.2.11 raeburn 4047: # If so, ability to clone course is automatic.
4048: # hasuniquecode - filter by courses for which a six character unique code has
4049: # been set.
1.445 raeburn 4050: #
1.234 foxr 4051: # $client - The socket open on the client.
4052: # Returns:
4053: # 1 - Continue processing.
4054: # Side Effects:
4055: # a reply is written to $client.
4056: sub dump_course_id_handler {
4057: my ($cmd, $tail, $client) = @_;
4058: my $userinput = "$cmd:$tail";
4059:
1.333 raeburn 4060: my ($udom,$since,$description,$instcodefilter,$ownerfilter,$coursefilter,
1.404 raeburn 4061: $typefilter,$regexp_ok,$rtn_as_hash,$selfenrollonly,$catfilter,$showhidden,
1.427 raeburn 4062: $caller,$cloner,$cc_clone_list,$cloneonly,$createdbefore,$createdafter,
1.489.2.11 raeburn 4063: $creationcontext,$domcloner,$hasuniquecode) =split(/:/,$tail);
1.397 raeburn 4064: my $now = time;
1.419 raeburn 4065: my ($cloneruname,$clonerudom,%cc_clone);
1.234 foxr 4066: if (defined($description)) {
4067: $description=&unescape($description);
4068: } else {
4069: $description='.';
4070: }
1.266 raeburn 4071: if (defined($instcodefilter)) {
4072: $instcodefilter=&unescape($instcodefilter);
4073: } else {
4074: $instcodefilter='.';
4075: }
1.336 raeburn 4076: my ($ownerunamefilter,$ownerdomfilter);
1.266 raeburn 4077: if (defined($ownerfilter)) {
4078: $ownerfilter=&unescape($ownerfilter);
1.336 raeburn 4079: if ($ownerfilter ne '.' && defined($ownerfilter)) {
4080: if ($ownerfilter =~ /^([^:]*):([^:]*)$/) {
4081: $ownerunamefilter = $1;
4082: $ownerdomfilter = $2;
4083: } else {
4084: $ownerunamefilter = $ownerfilter;
4085: $ownerdomfilter = '';
4086: }
4087: }
1.266 raeburn 4088: } else {
4089: $ownerfilter='.';
4090: }
1.336 raeburn 4091:
1.282 raeburn 4092: if (defined($coursefilter)) {
4093: $coursefilter=&unescape($coursefilter);
4094: } else {
4095: $coursefilter='.';
4096: }
1.333 raeburn 4097: if (defined($typefilter)) {
4098: $typefilter=&unescape($typefilter);
4099: } else {
4100: $typefilter='.';
4101: }
1.344 raeburn 4102: if (defined($regexp_ok)) {
4103: $regexp_ok=&unescape($regexp_ok);
4104: }
1.401 raeburn 4105: if (defined($catfilter)) {
4106: $catfilter=&unescape($catfilter);
4107: }
1.419 raeburn 4108: if (defined($cloner)) {
4109: $cloner = &unescape($cloner);
4110: ($cloneruname,$clonerudom) = ($cloner =~ /^($LONCAPA::match_username):($LONCAPA::match_domain)$/);
4111: }
4112: if (defined($cc_clone_list)) {
4113: $cc_clone_list = &unescape($cc_clone_list);
4114: my @cc_cloners = split('&',$cc_clone_list);
4115: foreach my $cid (@cc_cloners) {
4116: my ($clonedom,$clonenum) = split(':',$cid);
4117: next if ($clonedom ne $udom);
4118: $cc_clone{$clonedom.'_'.$clonenum} = 1;
4119: }
4120: }
1.431 raeburn 4121: if ($createdbefore ne '') {
1.427 raeburn 4122: $createdbefore = &unescape($createdbefore);
4123: } else {
4124: $createdbefore = 0;
4125: }
1.431 raeburn 4126: if ($createdafter ne '') {
1.427 raeburn 4127: $createdafter = &unescape($createdafter);
4128: } else {
4129: $createdafter = 0;
4130: }
1.431 raeburn 4131: if ($creationcontext ne '') {
1.427 raeburn 4132: $creationcontext = &unescape($creationcontext);
4133: } else {
4134: $creationcontext = '.';
4135: }
1.489.2.11 raeburn 4136: unless ($hasuniquecode) {
4137: $hasuniquecode = '.';
4138: }
1.384 raeburn 4139: my $unpack = 1;
1.485 raeburn 4140: if ($description eq '.' && $instcodefilter eq '.' && $ownerfilter eq '.' &&
1.384 raeburn 4141: $typefilter eq '.') {
4142: $unpack = 0;
4143: }
4144: if (!defined($since)) { $since=0; }
1.234 foxr 4145: my $qresult='';
4146: my $hashref = &tie_domain_hash($udom, "nohist_courseids", &GDBM_WRCREAT());
4147: if ($hashref) {
1.384 raeburn 4148: while (my ($key,$value) = each(%$hashref)) {
1.397 raeburn 4149: my ($unesc_key,$lasttime_key,$lasttime,$is_hash,%val,
1.427 raeburn 4150: %unesc_val,$selfenroll_end,$selfenroll_types,$created,
4151: $context);
1.384 raeburn 4152: $unesc_key = &unescape($key);
4153: if ($unesc_key =~ /^lasttime:/) {
4154: next;
4155: } else {
4156: $lasttime_key = &escape('lasttime:'.$unesc_key);
4157: }
4158: if ($hashref->{$lasttime_key} ne '') {
4159: $lasttime = $hashref->{$lasttime_key};
4160: next if ($lasttime<$since);
4161: }
1.419 raeburn 4162: my ($canclone,$valchange);
1.384 raeburn 4163: my $items = &Apache::lonnet::thaw_unescape($value);
4164: if (ref($items) eq 'HASH') {
1.429 raeburn 4165: if ($hashref->{$lasttime_key} eq '') {
1.430 raeburn 4166: next if ($since > 1);
1.429 raeburn 4167: }
1.384 raeburn 4168: $is_hash = 1;
1.445 raeburn 4169: if ($domcloner) {
4170: $canclone = 1;
4171: } elsif (defined($clonerudom)) {
1.419 raeburn 4172: if ($items->{'cloners'}) {
4173: my @cloneable = split(',',$items->{'cloners'});
4174: if (@cloneable) {
4175: if (grep(/^\*$/,@cloneable)) {
4176: $canclone = 1;
4177: } elsif (grep(/^\*:\Q$clonerudom\E$/,@cloneable)) {
4178: $canclone = 1;
4179: } elsif (grep(/^\Q$cloneruname\E:\Q$clonerudom\E$/,@cloneable)) {
4180: $canclone = 1;
4181: }
4182: }
4183: unless ($canclone) {
4184: if ($cloneruname ne '' && $clonerudom ne '') {
4185: if ($cc_clone{$unesc_key}) {
4186: $canclone = 1;
4187: $items->{'cloners'} .= ','.$cloneruname.':'.
4188: $clonerudom;
4189: $valchange = 1;
4190: }
4191: }
4192: }
4193: } elsif (defined($cloneruname)) {
4194: if ($cc_clone{$unesc_key}) {
4195: $canclone = 1;
4196: $items->{'cloners'} = $cloneruname.':'.$clonerudom;
4197: $valchange = 1;
4198: }
1.437 raeburn 4199: unless ($canclone) {
4200: if ($items->{'owner'} =~ /:/) {
4201: if ($items->{'owner'} eq $cloner) {
4202: $canclone = 1;
4203: }
1.444 raeburn 4204: } elsif ($cloner eq $items->{'owner'}.':'.$udom) {
1.437 raeburn 4205: $canclone = 1;
4206: }
4207: if ($canclone) {
4208: $items->{'cloners'} = $cloneruname.':'.$clonerudom;
4209: $valchange = 1;
4210: }
4211: }
1.419 raeburn 4212: }
4213: }
1.384 raeburn 4214: if ($unpack || !$rtn_as_hash) {
4215: $unesc_val{'descr'} = $items->{'description'};
4216: $unesc_val{'inst_code'} = $items->{'inst_code'};
4217: $unesc_val{'owner'} = $items->{'owner'};
4218: $unesc_val{'type'} = $items->{'type'};
1.419 raeburn 4219: $unesc_val{'cloners'} = $items->{'cloners'};
1.427 raeburn 4220: $unesc_val{'created'} = $items->{'created'};
4221: $unesc_val{'context'} = $items->{'context'};
1.404 raeburn 4222: }
4223: $selfenroll_types = $items->{'selfenroll_types'};
4224: $selfenroll_end = $items->{'selfenroll_end_date'};
1.427 raeburn 4225: $created = $items->{'created'};
4226: $context = $items->{'context'};
1.489.2.11 raeburn 4227: if ($hasuniquecode ne '.') {
4228: next unless ($items->{'uniquecode'});
4229: }
1.404 raeburn 4230: if ($selfenrollonly) {
4231: next if (!$selfenroll_types);
4232: if (($selfenroll_end > 0) && ($selfenroll_end <= $now)) {
4233: next;
1.397 raeburn 4234: }
1.404 raeburn 4235: }
1.427 raeburn 4236: if ($creationcontext ne '.') {
4237: next if (($context ne '') && ($context ne $creationcontext));
4238: }
4239: if ($createdbefore > 0) {
4240: next if (($created eq '') || ($created > $createdbefore));
4241: }
4242: if ($createdafter > 0) {
4243: next if (($created eq '') || ($created <= $createdafter));
4244: }
1.404 raeburn 4245: if ($catfilter ne '') {
1.406 raeburn 4246: next if ($items->{'categories'} eq '');
4247: my @categories = split('&',$items->{'categories'});
1.407 raeburn 4248: next if (@categories == 0);
4249: my @subcats = split('&',$catfilter);
4250: my $matchcat = 0;
4251: foreach my $cat (@categories) {
4252: if (grep(/^\Q$cat\E$/,@subcats)) {
4253: $matchcat = 1;
4254: last;
4255: }
4256: }
4257: next if (!$matchcat);
1.404 raeburn 4258: }
4259: if ($caller eq 'coursecatalog') {
1.405 raeburn 4260: if ($items->{'hidefromcat'} eq 'yes') {
4261: next if !$showhidden;
1.401 raeburn 4262: }
1.384 raeburn 4263: }
1.383 raeburn 4264: } else {
1.401 raeburn 4265: next if ($catfilter ne '');
1.419 raeburn 4266: next if ($selfenrollonly);
1.427 raeburn 4267: next if ($createdbefore || $createdafter);
4268: next if ($creationcontext ne '.');
1.419 raeburn 4269: if ((defined($clonerudom)) && (defined($cloneruname))) {
4270: if ($cc_clone{$unesc_key}) {
4271: $canclone = 1;
4272: $val{'cloners'} = &escape($cloneruname.':'.$clonerudom);
4273: }
4274: }
1.384 raeburn 4275: $is_hash = 0;
1.388 raeburn 4276: my @courseitems = split(/:/,$value);
1.403 raeburn 4277: $lasttime = pop(@courseitems);
1.402 raeburn 4278: if ($hashref->{$lasttime_key} eq '') {
4279: next if ($lasttime<$since);
4280: }
1.384 raeburn 4281: ($val{'descr'},$val{'inst_code'},$val{'owner'},$val{'type'}) = @courseitems;
1.383 raeburn 4282: }
1.419 raeburn 4283: if ($cloneonly) {
4284: next unless ($canclone);
4285: }
1.266 raeburn 4286: my $match = 1;
1.384 raeburn 4287: if ($description ne '.') {
4288: if (!$is_hash) {
4289: $unesc_val{'descr'} = &unescape($val{'descr'});
4290: }
4291: if (eval{$unesc_val{'descr'} !~ /\Q$description\E/i}) {
1.266 raeburn 4292: $match = 0;
1.384 raeburn 4293: }
1.266 raeburn 4294: }
1.384 raeburn 4295: if ($instcodefilter ne '.') {
4296: if (!$is_hash) {
4297: $unesc_val{'inst_code'} = &unescape($val{'inst_code'});
4298: }
1.418 raeburn 4299: if ($regexp_ok == 1) {
1.384 raeburn 4300: if (eval{$unesc_val{'inst_code'} !~ /$instcodefilter/}) {
1.344 raeburn 4301: $match = 0;
4302: }
1.418 raeburn 4303: } elsif ($regexp_ok == -1) {
4304: if (eval{$unesc_val{'inst_code'} =~ /$instcodefilter/}) {
4305: $match = 0;
4306: }
1.344 raeburn 4307: } else {
1.384 raeburn 4308: if (eval{$unesc_val{'inst_code'} !~ /\Q$instcodefilter\E/i}) {
1.344 raeburn 4309: $match = 0;
4310: }
1.266 raeburn 4311: }
1.234 foxr 4312: }
1.384 raeburn 4313: if ($ownerfilter ne '.') {
4314: if (!$is_hash) {
4315: $unesc_val{'owner'} = &unescape($val{'owner'});
4316: }
1.336 raeburn 4317: if (($ownerunamefilter ne '') && ($ownerdomfilter ne '')) {
1.384 raeburn 4318: if ($unesc_val{'owner'} =~ /:/) {
4319: if (eval{$unesc_val{'owner'} !~
4320: /\Q$ownerunamefilter\E:\Q$ownerdomfilter\E$/i}) {
1.336 raeburn 4321: $match = 0;
4322: }
4323: } else {
1.384 raeburn 4324: if (eval{$unesc_val{'owner'} !~ /\Q$ownerunamefilter\E/i}) {
1.336 raeburn 4325: $match = 0;
4326: }
4327: }
4328: } elsif ($ownerunamefilter ne '') {
1.384 raeburn 4329: if ($unesc_val{'owner'} =~ /:/) {
4330: if (eval{$unesc_val{'owner'} !~ /\Q$ownerunamefilter\E:[^:]+$/i}) {
1.336 raeburn 4331: $match = 0;
4332: }
4333: } else {
1.384 raeburn 4334: if (eval{$unesc_val{'owner'} !~ /\Q$ownerunamefilter\E/i}) {
1.336 raeburn 4335: $match = 0;
4336: }
4337: }
4338: } elsif ($ownerdomfilter ne '') {
1.384 raeburn 4339: if ($unesc_val{'owner'} =~ /:/) {
4340: if (eval{$unesc_val{'owner'} !~ /^[^:]+:\Q$ownerdomfilter\E/}) {
1.336 raeburn 4341: $match = 0;
4342: }
4343: } else {
4344: if ($ownerdomfilter ne $udom) {
4345: $match = 0;
4346: }
4347: }
1.266 raeburn 4348: }
4349: }
1.384 raeburn 4350: if ($coursefilter ne '.') {
4351: if (eval{$unesc_key !~ /^$udom(_)\Q$coursefilter\E$/}) {
1.282 raeburn 4352: $match = 0;
4353: }
4354: }
1.384 raeburn 4355: if ($typefilter ne '.') {
4356: if (!$is_hash) {
4357: $unesc_val{'type'} = &unescape($val{'type'});
4358: }
4359: if ($unesc_val{'type'} eq '') {
1.333 raeburn 4360: if ($typefilter ne 'Course') {
4361: $match = 0;
4362: }
1.383 raeburn 4363: } else {
1.384 raeburn 4364: if (eval{$unesc_val{'type'} !~ /^\Q$typefilter\E$/}) {
1.333 raeburn 4365: $match = 0;
4366: }
4367: }
4368: }
1.266 raeburn 4369: if ($match == 1) {
1.384 raeburn 4370: if ($rtn_as_hash) {
4371: if ($is_hash) {
1.419 raeburn 4372: if ($valchange) {
4373: my $newvalue = &Apache::lonnet::freeze_escape($items);
4374: $qresult.=$key.'='.$newvalue.'&';
4375: } else {
4376: $qresult.=$key.'='.$value.'&';
4377: }
1.384 raeburn 4378: } else {
1.388 raeburn 4379: my %rtnhash = ( 'description' => &unescape($val{'descr'}),
4380: 'inst_code' => &unescape($val{'inst_code'}),
4381: 'owner' => &unescape($val{'owner'}),
4382: 'type' => &unescape($val{'type'}),
1.419 raeburn 4383: 'cloners' => &unescape($val{'cloners'}),
1.384 raeburn 4384: );
4385: my $items = &Apache::lonnet::freeze_escape(\%rtnhash);
4386: $qresult.=$key.'='.$items.'&';
4387: }
1.383 raeburn 4388: } else {
1.384 raeburn 4389: if ($is_hash) {
4390: $qresult .= $key.'='.&escape($unesc_val{'descr'}).':'.
4391: &escape($unesc_val{'inst_code'}).':'.
4392: &escape($unesc_val{'owner'}).'&';
4393: } else {
4394: $qresult .= $key.'='.$val{'descr'}.':'.$val{'inst_code'}.
4395: ':'.$val{'owner'}.'&';
4396: }
1.383 raeburn 4397: }
1.266 raeburn 4398: }
1.234 foxr 4399: }
1.311 albertel 4400: if (&untie_domain_hash($hashref)) {
1.234 foxr 4401: chop($qresult);
1.387 albertel 4402: &Reply($client, \$qresult, $userinput);
1.234 foxr 4403: } else {
4404: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4405: "while attempting courseiddump\n", $userinput);
4406: }
4407: } else {
4408: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
4409: "while attempting courseiddump\n", $userinput);
4410: }
4411: return 1;
4412: }
4413: ®ister_handler("courseiddump", \&dump_course_id_handler, 0, 1, 0);
1.238 foxr 4414:
1.438 raeburn 4415: sub course_lastaccess_handler {
4416: my ($cmd, $tail, $client) = @_;
4417: my $userinput = "$cmd:$tail";
4418: my ($cdom,$cnum) = split(':',$tail);
4419: my (%lastaccess,$qresult);
4420: my $hashref = &tie_domain_hash($cdom, "nohist_courseids", &GDBM_WRCREAT());
4421: if ($hashref) {
4422: while (my ($key,$value) = each(%$hashref)) {
4423: my ($unesc_key,$lasttime);
4424: $unesc_key = &unescape($key);
4425: if ($cnum) {
4426: next unless ($unesc_key =~ /\Q$cdom\E_\Q$cnum\E$/);
4427: }
4428: if ($unesc_key =~ /^lasttime:($LONCAPA::match_domain\_$LONCAPA::match_courseid)/) {
4429: $lastaccess{$1} = $value;
4430: } else {
4431: my $items = &Apache::lonnet::thaw_unescape($value);
4432: if (ref($items) eq 'HASH') {
4433: unless ($lastaccess{$unesc_key}) {
4434: $lastaccess{$unesc_key} = '';
4435: }
4436: } else {
4437: my @courseitems = split(':',$value);
4438: $lastaccess{$unesc_key} = pop(@courseitems);
4439: }
4440: }
4441: }
4442: foreach my $cid (sort(keys(%lastaccess))) {
4443: $qresult.=&escape($cid).'='.$lastaccess{$cid}.'&';
4444: }
4445: if (&untie_domain_hash($hashref)) {
4446: if ($qresult) {
4447: chop($qresult);
4448: }
4449: &Reply($client, \$qresult, $userinput);
4450: } else {
4451: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4452: "while attempting lastacourseaccess\n", $userinput);
4453: }
4454: } else {
4455: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
4456: "while attempting lastcourseaccess\n", $userinput);
4457: }
4458: return 1;
4459: }
4460: ®ister_handler("courselastaccess",\&course_lastaccess_handler, 0, 1, 0);
4461:
1.238 foxr 4462: #
1.348 raeburn 4463: # Puts an unencrypted entry in a namespace db file at the domain level
4464: #
4465: # Parameters:
4466: # $cmd - The command that got us here.
4467: # $tail - Tail of the command (remaining parameters).
4468: # $client - File descriptor connected to client.
4469: # Returns
4470: # 0 - Requested to exit, caller should shut down.
4471: # 1 - Continue processing.
4472: # Side effects:
4473: # reply is written to $client.
4474: #
4475: sub put_domain_handler {
4476: my ($cmd,$tail,$client) = @_;
4477:
4478: my $userinput = "$cmd:$tail";
4479:
4480: my ($udom,$namespace,$what) =split(/:/,$tail,3);
4481: chomp($what);
4482: my @pairs=split(/\&/,$what);
4483: my $hashref = &tie_domain_hash($udom, "$namespace", &GDBM_WRCREAT(),
4484: "P", $what);
4485: if ($hashref) {
4486: foreach my $pair (@pairs) {
4487: my ($key,$value)=split(/=/,$pair);
4488: $hashref->{$key}=$value;
4489: }
4490: if (&untie_domain_hash($hashref)) {
4491: &Reply($client, "ok\n", $userinput);
4492: } else {
4493: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4494: "while attempting putdom\n", $userinput);
4495: }
4496: } else {
4497: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
4498: "while attempting putdom\n", $userinput);
4499: }
4500:
4501: return 1;
4502: }
4503: ®ister_handler("putdom", \&put_domain_handler, 0, 1, 0);
4504:
4505: # Unencrypted get from the namespace database file at the domain level.
4506: # This function retrieves a keyed item from a specific named database in the
4507: # domain directory.
4508: #
4509: # Parameters:
4510: # $cmd - Command request keyword (get).
4511: # $tail - Tail of the command. This is a colon separated list
4512: # consisting of the domain and the 'namespace'
4513: # which selects the gdbm file to do the lookup in,
4514: # & separated list of keys to lookup. Note that
4515: # the values are returned as an & separated list too.
4516: # $client - File descriptor open on the client.
4517: # Returns:
4518: # 1 - Continue processing.
4519: # 0 - Exit.
4520: # Side effects:
4521: # reply is written to $client.
4522: #
4523:
4524: sub get_domain_handler {
4525: my ($cmd, $tail, $client) = @_;
4526:
1.461 foxr 4527:
1.348 raeburn 4528: my $userinput = "$client:$tail";
4529:
4530: my ($udom,$namespace,$what)=split(/:/,$tail,3);
4531: chomp($what);
4532: my @queries=split(/\&/,$what);
4533: my $qresult='';
4534: my $hashref = &tie_domain_hash($udom, "$namespace", &GDBM_READER());
4535: if ($hashref) {
4536: for (my $i=0;$i<=$#queries;$i++) {
4537: $qresult.="$hashref->{$queries[$i]}&";
4538: }
4539: if (&untie_domain_hash($hashref)) {
4540: $qresult=~s/\&$//;
1.387 albertel 4541: &Reply($client, \$qresult, $userinput);
1.348 raeburn 4542: } else {
4543: &Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ".
4544: "while attempting getdom\n",$userinput);
4545: }
4546: } else {
4547: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
4548: "while attempting getdom\n",$userinput);
4549: }
4550:
4551: return 1;
4552: }
1.360 raeburn 4553: ®ister_handler("getdom", \&get_domain_handler, 0, 1, 0);
1.348 raeburn 4554:
1.420 raeburn 4555: #
1.238 foxr 4556: # Puts an id to a domains id database.
4557: #
4558: # Parameters:
4559: # $cmd - The command that triggered us.
4560: # $tail - Remainder of the request other than the command. This is a
4561: # colon separated list containing:
4562: # $domain - The domain for which we are writing the id.
4563: # $pairs - The id info to write... this is and & separated list
4564: # of keyword=value.
4565: # $client - Socket open on the client.
4566: # Returns:
4567: # 1 - Continue processing.
4568: # Side effects:
4569: # reply is written to $client.
4570: #
4571: sub put_id_handler {
4572: my ($cmd,$tail,$client) = @_;
4573:
4574:
4575: my $userinput = "$cmd:$tail";
4576:
4577: my ($udom,$what)=split(/:/,$tail);
4578: chomp($what);
4579: my @pairs=split(/\&/,$what);
4580: my $hashref = &tie_domain_hash($udom, "ids", &GDBM_WRCREAT(),
4581: "P", $what);
4582: if ($hashref) {
4583: foreach my $pair (@pairs) {
4584: my ($key,$value)=split(/=/,$pair);
4585: $hashref->{$key}=$value;
4586: }
1.311 albertel 4587: if (&untie_domain_hash($hashref)) {
1.238 foxr 4588: &Reply($client, "ok\n", $userinput);
4589: } else {
4590: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4591: "while attempting idput\n", $userinput);
4592: }
4593: } else {
4594: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
4595: "while attempting idput\n", $userinput);
4596: }
4597:
4598: return 1;
4599: }
1.263 albertel 4600: ®ister_handler("idput", \&put_id_handler, 0, 1, 0);
1.238 foxr 4601:
4602: #
4603: # Retrieves a set of id values from the id database.
4604: # Returns an & separated list of results, one for each requested id to the
4605: # client.
4606: #
4607: # Parameters:
4608: # $cmd - Command keyword that caused us to be dispatched.
4609: # $tail - Tail of the command. Consists of a colon separated:
4610: # domain - the domain whose id table we dump
4611: # ids Consists of an & separated list of
4612: # id keywords whose values will be fetched.
4613: # nonexisting keywords will have an empty value.
4614: # $client - Socket open on the client.
4615: #
4616: # Returns:
4617: # 1 - indicating processing should continue.
4618: # Side effects:
4619: # An & separated list of results is written to $client.
4620: #
4621: sub get_id_handler {
4622: my ($cmd, $tail, $client) = @_;
4623:
4624:
4625: my $userinput = "$client:$tail";
4626:
4627: my ($udom,$what)=split(/:/,$tail);
4628: chomp($what);
4629: my @queries=split(/\&/,$what);
4630: my $qresult='';
4631: my $hashref = &tie_domain_hash($udom, "ids", &GDBM_READER());
4632: if ($hashref) {
4633: for (my $i=0;$i<=$#queries;$i++) {
4634: $qresult.="$hashref->{$queries[$i]}&";
4635: }
1.311 albertel 4636: if (&untie_domain_hash($hashref)) {
1.238 foxr 4637: $qresult=~s/\&$//;
1.387 albertel 4638: &Reply($client, \$qresult, $userinput);
1.238 foxr 4639: } else {
4640: &Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ".
4641: "while attempting idget\n",$userinput);
4642: }
4643: } else {
4644: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
4645: "while attempting idget\n",$userinput);
4646: }
4647:
4648: return 1;
4649: }
1.263 albertel 4650: ®ister_handler("idget", \&get_id_handler, 0, 1, 0);
1.238 foxr 4651:
1.489.2.7 raeburn 4652: # Deletes one or more ids in a domain's id database.
1.489.2.6 raeburn 4653: #
4654: # Parameters:
4655: # $cmd - Command keyword (iddel).
4656: # $tail - Command tail. In this case a colon
4657: # separated list containing:
4658: # The domain for which we are deleting the id(s).
4659: # &-separated list of id(s) to delete.
4660: # $client - File open on client socket.
4661: # Returns:
4662: # 1 - Continue processing
4663: # 0 - Exit server.
4664: #
4665: #
4666:
4667: sub del_id_handler {
4668: my ($cmd,$tail,$client) = @_;
4669:
4670: my $userinput = "$cmd:$tail";
4671:
4672: my ($udom,$what)=split(/:/,$tail);
4673: chomp($what);
4674: my $hashref = &tie_domain_hash($udom, "ids", &GDBM_WRCREAT(),
4675: "D", $what);
4676: if ($hashref) {
4677: my @keys=split(/\&/,$what);
4678: foreach my $key (@keys) {
4679: delete($hashref->{$key});
4680: }
4681: if (&untie_user_hash($hashref)) {
4682: &Reply($client, "ok\n", $userinput);
4683: } else {
4684: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4685: "while attempting iddel\n", $userinput);
4686: }
4687: } else {
4688: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
4689: "while attempting iddel\n", $userinput);
4690: }
4691: return 1;
4692: }
4693: ®ister_handler("iddel", \&del_id_handler, 0, 1, 0);
4694:
1.238 foxr 4695: #
1.299 raeburn 4696: # Puts broadcast e-mail sent by Domain Coordinator in nohist_dcmail database
4697: #
4698: # Parameters
4699: # $cmd - Command keyword that caused us to be dispatched.
4700: # $tail - Tail of the command. Consists of a colon separated:
4701: # domain - the domain whose dcmail we are recording
4702: # email Consists of key=value pair
4703: # where key is unique msgid
4704: # and value is message (in XML)
4705: # $client - Socket open on the client.
4706: #
4707: # Returns:
4708: # 1 - indicating processing should continue.
4709: # Side effects
4710: # reply is written to $client.
4711: #
4712: sub put_dcmail_handler {
4713: my ($cmd,$tail,$client) = @_;
4714: my $userinput = "$cmd:$tail";
1.463 foxr 4715:
4716:
1.299 raeburn 4717: my ($udom,$what)=split(/:/,$tail);
4718: chomp($what);
4719: my $hashref = &tie_domain_hash($udom, "nohist_dcmail", &GDBM_WRCREAT());
4720: if ($hashref) {
4721: my ($key,$value)=split(/=/,$what);
4722: $hashref->{$key}=$value;
4723: }
1.311 albertel 4724: if (&untie_domain_hash($hashref)) {
1.299 raeburn 4725: &Reply($client, "ok\n", $userinput);
4726: } else {
4727: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4728: "while attempting dcmailput\n", $userinput);
4729: }
4730: return 1;
4731: }
4732: ®ister_handler("dcmailput", \&put_dcmail_handler, 0, 1, 0);
4733:
4734: #
4735: # Retrieves broadcast e-mail from nohist_dcmail database
4736: # Returns to client an & separated list of key=value pairs,
4737: # where key is msgid and value is message information.
4738: #
4739: # Parameters
4740: # $cmd - Command keyword that caused us to be dispatched.
4741: # $tail - Tail of the command. Consists of a colon separated:
4742: # domain - the domain whose dcmail table we dump
4743: # startfilter - beginning of time window
4744: # endfilter - end of time window
4745: # sendersfilter - & separated list of username:domain
4746: # for senders to search for.
4747: # $client - Socket open on the client.
4748: #
4749: # Returns:
4750: # 1 - indicating processing should continue.
4751: # Side effects
4752: # reply (& separated list of msgid=messageinfo pairs) is
4753: # written to $client.
4754: #
4755: sub dump_dcmail_handler {
4756: my ($cmd, $tail, $client) = @_;
4757:
4758: my $userinput = "$cmd:$tail";
4759: my ($udom,$startfilter,$endfilter,$sendersfilter) = split(/:/,$tail);
4760: chomp($sendersfilter);
4761: my @senders = ();
4762: if (defined($startfilter)) {
4763: $startfilter=&unescape($startfilter);
4764: } else {
4765: $startfilter='.';
4766: }
4767: if (defined($endfilter)) {
4768: $endfilter=&unescape($endfilter);
4769: } else {
4770: $endfilter='.';
4771: }
4772: if (defined($sendersfilter)) {
4773: $sendersfilter=&unescape($sendersfilter);
1.300 albertel 4774: @senders = map { &unescape($_) } split(/\&/,$sendersfilter);
1.299 raeburn 4775: }
4776:
4777: my $qresult='';
4778: my $hashref = &tie_domain_hash($udom, "nohist_dcmail", &GDBM_WRCREAT());
4779: if ($hashref) {
4780: while (my ($key,$value) = each(%$hashref)) {
4781: my $match = 1;
1.303 albertel 4782: my ($timestamp,$subj,$uname,$udom) =
4783: split(/:/,&unescape(&unescape($key)),5); # yes, twice really
1.299 raeburn 4784: $subj = &unescape($subj);
4785: unless ($startfilter eq '.' || !defined($startfilter)) {
4786: if ($timestamp < $startfilter) {
4787: $match = 0;
4788: }
4789: }
4790: unless ($endfilter eq '.' || !defined($endfilter)) {
4791: if ($timestamp > $endfilter) {
4792: $match = 0;
4793: }
4794: }
4795: unless (@senders < 1) {
4796: unless (grep/^$uname:$udom$/,@senders) {
4797: $match = 0;
4798: }
4799: }
4800: if ($match == 1) {
4801: $qresult.=$key.'='.$value.'&';
4802: }
4803: }
1.311 albertel 4804: if (&untie_domain_hash($hashref)) {
1.299 raeburn 4805: chop($qresult);
1.387 albertel 4806: &Reply($client, \$qresult, $userinput);
1.299 raeburn 4807: } else {
4808: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4809: "while attempting dcmaildump\n", $userinput);
4810: }
4811: } else {
4812: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
4813: "while attempting dcmaildump\n", $userinput);
4814: }
4815: return 1;
4816: }
4817:
4818: ®ister_handler("dcmaildump", \&dump_dcmail_handler, 0, 1, 0);
4819:
4820: #
4821: # Puts domain roles in nohist_domainroles database
4822: #
4823: # Parameters
4824: # $cmd - Command keyword that caused us to be dispatched.
4825: # $tail - Tail of the command. Consists of a colon separated:
4826: # domain - the domain whose roles we are recording
4827: # role - Consists of key=value pair
4828: # where key is unique role
4829: # and value is start/end date information
4830: # $client - Socket open on the client.
4831: #
4832: # Returns:
4833: # 1 - indicating processing should continue.
4834: # Side effects
4835: # reply is written to $client.
4836: #
4837:
4838: sub put_domainroles_handler {
4839: my ($cmd,$tail,$client) = @_;
4840:
4841: my $userinput = "$cmd:$tail";
4842: my ($udom,$what)=split(/:/,$tail);
4843: chomp($what);
4844: my @pairs=split(/\&/,$what);
4845: my $hashref = &tie_domain_hash($udom, "nohist_domainroles", &GDBM_WRCREAT());
4846: if ($hashref) {
4847: foreach my $pair (@pairs) {
4848: my ($key,$value)=split(/=/,$pair);
4849: $hashref->{$key}=$value;
4850: }
1.311 albertel 4851: if (&untie_domain_hash($hashref)) {
1.299 raeburn 4852: &Reply($client, "ok\n", $userinput);
4853: } else {
4854: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4855: "while attempting domroleput\n", $userinput);
4856: }
4857: } else {
4858: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
4859: "while attempting domroleput\n", $userinput);
4860: }
4861:
4862: return 1;
4863: }
4864:
4865: ®ister_handler("domroleput", \&put_domainroles_handler, 0, 1, 0);
4866:
4867: #
4868: # Retrieves domain roles from nohist_domainroles database
4869: # Returns to client an & separated list of key=value pairs,
4870: # where key is role and value is start and end date information.
4871: #
4872: # Parameters
4873: # $cmd - Command keyword that caused us to be dispatched.
4874: # $tail - Tail of the command. Consists of a colon separated:
4875: # domain - the domain whose domain roles table we dump
4876: # $client - Socket open on the client.
4877: #
4878: # Returns:
4879: # 1 - indicating processing should continue.
4880: # Side effects
4881: # reply (& separated list of role=start/end info pairs) is
4882: # written to $client.
4883: #
4884: sub dump_domainroles_handler {
4885: my ($cmd, $tail, $client) = @_;
4886:
4887: my $userinput = "$cmd:$tail";
4888: my ($udom,$startfilter,$endfilter,$rolesfilter) = split(/:/,$tail);
4889: chomp($rolesfilter);
4890: my @roles = ();
4891: if (defined($startfilter)) {
4892: $startfilter=&unescape($startfilter);
4893: } else {
4894: $startfilter='.';
4895: }
4896: if (defined($endfilter)) {
4897: $endfilter=&unescape($endfilter);
4898: } else {
4899: $endfilter='.';
4900: }
4901: if (defined($rolesfilter)) {
4902: $rolesfilter=&unescape($rolesfilter);
1.300 albertel 4903: @roles = split(/\&/,$rolesfilter);
1.299 raeburn 4904: }
1.421 raeburn 4905:
1.299 raeburn 4906: my $hashref = &tie_domain_hash($udom, "nohist_domainroles", &GDBM_WRCREAT());
4907: if ($hashref) {
4908: my $qresult = '';
4909: while (my ($key,$value) = each(%$hashref)) {
4910: my $match = 1;
1.421 raeburn 4911: my ($end,$start) = split(/:/,&unescape($value));
1.299 raeburn 4912: my ($trole,$uname,$udom,$runame,$rudom,$rsec) = split(/:/,&unescape($key));
1.421 raeburn 4913: unless (@roles < 1) {
4914: unless (grep/^\Q$trole\E$/,@roles) {
4915: $match = 0;
4916: next;
4917: }
4918: }
1.299 raeburn 4919: unless ($startfilter eq '.' || !defined($startfilter)) {
1.415 raeburn 4920: if ((defined($start)) && ($start >= $startfilter)) {
1.299 raeburn 4921: $match = 0;
1.421 raeburn 4922: next;
1.299 raeburn 4923: }
4924: }
4925: unless ($endfilter eq '.' || !defined($endfilter)) {
1.421 raeburn 4926: if ((defined($end)) && (($end > 0) && ($end <= $endfilter))) {
1.299 raeburn 4927: $match = 0;
1.421 raeburn 4928: next;
1.299 raeburn 4929: }
4930: }
4931: if ($match == 1) {
4932: $qresult.=$key.'='.$value.'&';
4933: }
4934: }
1.311 albertel 4935: if (&untie_domain_hash($hashref)) {
1.299 raeburn 4936: chop($qresult);
1.387 albertel 4937: &Reply($client, \$qresult, $userinput);
1.299 raeburn 4938: } else {
4939: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4940: "while attempting domrolesdump\n", $userinput);
4941: }
4942: } else {
4943: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
4944: "while attempting domrolesdump\n", $userinput);
4945: }
4946: return 1;
4947: }
4948:
4949: ®ister_handler("domrolesdump", \&dump_domainroles_handler, 0, 1, 0);
4950:
4951:
1.238 foxr 4952: # Process the tmpput command I'm not sure what this does.. Seems to
4953: # create a file in the lonDaemons/tmp directory of the form $id.tmp
4954: # where Id is the client's ip concatenated with a sequence number.
4955: # The file will contain some value that is passed in. Is this e.g.
4956: # a login token?
4957: #
4958: # Parameters:
4959: # $cmd - The command that got us dispatched.
4960: # $tail - The remainder of the request following $cmd:
4961: # In this case this will be the contents of the file.
4962: # $client - Socket connected to the client.
4963: # Returns:
4964: # 1 indicating processing can continue.
4965: # Side effects:
4966: # A file is created in the local filesystem.
4967: # A reply is sent to the client.
4968: sub tmp_put_handler {
4969: my ($cmd, $what, $client) = @_;
4970:
4971: my $userinput = "$cmd:$what"; # Reconstruct for logging.
4972:
1.347 raeburn 4973: my ($record,$context) = split(/:/,$what);
4974: if ($context ne '') {
4975: chomp($context);
4976: $context = &unescape($context);
4977: }
4978: my ($id,$store);
1.238 foxr 4979: $tmpsnum++;
1.454 raeburn 4980: if (($context eq 'resetpw') || ($context eq 'createaccount')) {
1.347 raeburn 4981: $id = &md5_hex(&md5_hex(time.{}.rand().$$));
4982: } else {
4983: $id = $$.'_'.$clientip.'_'.$tmpsnum;
4984: }
1.238 foxr 4985: $id=~s/\W/\_/g;
1.347 raeburn 4986: $record=~s/\n//g;
1.238 foxr 4987: my $execdir=$perlvar{'lonDaemons'};
4988: if ($store=IO::File->new(">$execdir/tmp/$id.tmp")) {
1.347 raeburn 4989: print $store $record;
1.238 foxr 4990: close $store;
1.387 albertel 4991: &Reply($client, \$id, $userinput);
1.238 foxr 4992: } else {
4993: &Failure( $client, "error: ".($!+0)."IO::File->new Failed ".
4994: "while attempting tmpput\n", $userinput);
4995: }
4996: return 1;
4997:
4998: }
4999: ®ister_handler("tmpput", \&tmp_put_handler, 0, 1, 0);
1.263 albertel 5000:
1.238 foxr 5001: # Processes the tmpget command. This command returns the contents
5002: # of a temporary resource file(?) created via tmpput.
5003: #
5004: # Paramters:
5005: # $cmd - Command that got us dispatched.
5006: # $id - Tail of the command, contain the id of the resource
5007: # we want to fetch.
5008: # $client - socket open on the client.
5009: # Return:
5010: # 1 - Inidcating processing can continue.
5011: # Side effects:
5012: # A reply is sent to the client.
5013: #
5014: sub tmp_get_handler {
5015: my ($cmd, $id, $client) = @_;
5016:
5017: my $userinput = "$cmd:$id";
5018:
5019:
5020: $id=~s/\W/\_/g;
5021: my $store;
5022: my $execdir=$perlvar{'lonDaemons'};
5023: if ($store=IO::File->new("$execdir/tmp/$id.tmp")) {
5024: my $reply=<$store>;
1.387 albertel 5025: &Reply( $client, \$reply, $userinput);
1.238 foxr 5026: close $store;
5027: } else {
5028: &Failure( $client, "error: ".($!+0)."IO::File->new Failed ".
5029: "while attempting tmpget\n", $userinput);
5030: }
5031:
5032: return 1;
5033: }
5034: ®ister_handler("tmpget", \&tmp_get_handler, 0, 1, 0);
1.263 albertel 5035:
1.238 foxr 5036: #
5037: # Process the tmpdel command. This command deletes a temp resource
5038: # created by the tmpput command.
5039: #
5040: # Parameters:
5041: # $cmd - Command that got us here.
5042: # $id - Id of the temporary resource created.
5043: # $client - socket open on the client process.
5044: #
5045: # Returns:
5046: # 1 - Indicating processing should continue.
5047: # Side Effects:
5048: # A file is deleted
5049: # A reply is sent to the client.
5050: sub tmp_del_handler {
5051: my ($cmd, $id, $client) = @_;
5052:
5053: my $userinput= "$cmd:$id";
5054:
5055: chomp($id);
5056: $id=~s/\W/\_/g;
5057: my $execdir=$perlvar{'lonDaemons'};
5058: if (unlink("$execdir/tmp/$id.tmp")) {
5059: &Reply($client, "ok\n", $userinput);
5060: } else {
5061: &Failure( $client, "error: ".($!+0)."Unlink tmp Failed ".
5062: "while attempting tmpdel\n", $userinput);
5063: }
5064:
5065: return 1;
5066:
5067: }
5068: ®ister_handler("tmpdel", \&tmp_del_handler, 0, 1, 0);
1.263 albertel 5069:
1.238 foxr 5070: #
1.246 foxr 5071: # Processes the setannounce command. This command
5072: # creates a file named announce.txt in the top directory of
5073: # the documentn root and sets its contents. The announce.txt file is
5074: # printed in its entirety at the LonCAPA login page. Note:
5075: # once the announcement.txt fileis created it cannot be deleted.
5076: # However, setting the contents of the file to empty removes the
5077: # announcement from the login page of loncapa so who cares.
5078: #
5079: # Parameters:
5080: # $cmd - The command that got us dispatched.
5081: # $announcement - The text of the announcement.
5082: # $client - Socket open on the client process.
5083: # Retunrns:
5084: # 1 - Indicating request processing should continue
5085: # Side Effects:
5086: # The file {DocRoot}/announcement.txt is created.
5087: # A reply is sent to $client.
5088: #
5089: sub set_announce_handler {
5090: my ($cmd, $announcement, $client) = @_;
5091:
5092: my $userinput = "$cmd:$announcement";
5093:
5094: chomp($announcement);
5095: $announcement=&unescape($announcement);
5096: if (my $store=IO::File->new('>'.$perlvar{'lonDocRoot'}.
5097: '/announcement.txt')) {
5098: print $store $announcement;
5099: close $store;
5100: &Reply($client, "ok\n", $userinput);
5101: } else {
5102: &Failure($client, "error: ".($!+0)."\n", $userinput);
5103: }
5104:
5105: return 1;
5106: }
5107: ®ister_handler("setannounce", \&set_announce_handler, 0, 1, 0);
1.263 albertel 5108:
1.246 foxr 5109: #
5110: # Return the version of the daemon. This can be used to determine
5111: # the compatibility of cross version installations or, alternatively to
5112: # simply know who's out of date and who isn't. Note that the version
5113: # is returned concatenated with the tail.
5114: # Parameters:
5115: # $cmd - the request that dispatched to us.
5116: # $tail - Tail of the request (client's version?).
5117: # $client - Socket open on the client.
5118: #Returns:
5119: # 1 - continue processing requests.
5120: # Side Effects:
5121: # Replies with version to $client.
5122: sub get_version_handler {
5123: my ($cmd, $tail, $client) = @_;
5124:
5125: my $userinput = $cmd.$tail;
5126:
5127: &Reply($client, &version($userinput)."\n", $userinput);
5128:
5129:
5130: return 1;
5131: }
5132: ®ister_handler("version", \&get_version_handler, 0, 1, 0);
1.263 albertel 5133:
1.246 foxr 5134: # Set the current host and domain. This is used to support
5135: # multihomed systems. Each IP of the system, or even separate daemons
5136: # on the same IP can be treated as handling a separate lonCAPA virtual
5137: # machine. This command selects the virtual lonCAPA. The client always
5138: # knows the right one since it is lonc and it is selecting the domain/system
5139: # from the hosts.tab file.
5140: # Parameters:
5141: # $cmd - Command that dispatched us.
5142: # $tail - Tail of the command (domain/host requested).
5143: # $socket - Socket open on the client.
5144: #
5145: # Returns:
5146: # 1 - Indicates the program should continue to process requests.
5147: # Side-effects:
5148: # The default domain/system context is modified for this daemon.
5149: # a reply is sent to the client.
5150: #
5151: sub set_virtual_host_handler {
5152: my ($cmd, $tail, $socket) = @_;
5153:
5154: my $userinput ="$cmd:$tail";
5155:
5156: &Reply($client, &sethost($userinput)."\n", $userinput);
5157:
5158:
5159: return 1;
5160: }
1.247 albertel 5161: ®ister_handler("sethost", \&set_virtual_host_handler, 0, 1, 0);
1.246 foxr 5162:
5163: # Process a request to exit:
5164: # - "bye" is sent to the client.
5165: # - The client socket is shutdown and closed.
5166: # - We indicate to the caller that we should exit.
5167: # Formal Parameters:
5168: # $cmd - The command that got us here.
5169: # $tail - Tail of the command (empty).
5170: # $client - Socket open on the tail.
5171: # Returns:
5172: # 0 - Indicating the program should exit!!
5173: #
5174: sub exit_handler {
5175: my ($cmd, $tail, $client) = @_;
5176:
5177: my $userinput = "$cmd:$tail";
5178:
5179: &logthis("Client $clientip ($clientname) hanging up: $userinput");
5180: &Reply($client, "bye\n", $userinput);
5181: $client->shutdown(2); # shutdown the socket forcibly.
5182: $client->close();
5183:
5184: return 0;
5185: }
1.248 foxr 5186: ®ister_handler("exit", \&exit_handler, 0,1,1);
5187: ®ister_handler("init", \&exit_handler, 0,1,1);
5188: ®ister_handler("quit", \&exit_handler, 0,1,1);
5189:
5190: # Determine if auto-enrollment is enabled.
5191: # Note that the original had what I believe to be a defect.
5192: # The original returned 0 if the requestor was not a registerd client.
5193: # It should return "refused".
5194: # Formal Parameters:
5195: # $cmd - The command that invoked us.
5196: # $tail - The tail of the command (Extra command parameters.
5197: # $client - The socket open on the client that issued the request.
5198: # Returns:
5199: # 1 - Indicating processing should continue.
5200: #
5201: sub enrollment_enabled_handler {
5202: my ($cmd, $tail, $client) = @_;
5203: my $userinput = $cmd.":".$tail; # For logging purposes.
5204:
5205:
1.337 albertel 5206: my ($cdom) = split(/:/, $tail, 2); # Domain we're asking about.
5207:
1.248 foxr 5208: my $outcome = &localenroll::run($cdom);
1.387 albertel 5209: &Reply($client, \$outcome, $userinput);
1.248 foxr 5210:
5211: return 1;
5212: }
5213: ®ister_handler("autorun", \&enrollment_enabled_handler, 0, 1, 0);
5214:
1.417 raeburn 5215: #
1.423 raeburn 5216: # Validate an institutional code used for a LON-CAPA course.
1.417 raeburn 5217: #
5218: # Formal Parameters:
5219: # $cmd - The command request that got us dispatched.
5220: # $tail - The tail of the command. In this case,
5221: # this is a colon separated set of words that will be split
5222: # into:
1.424 raeburn 5223: # $dom - The domain for which the check of
5224: # institutional course code will occur.
5225: #
5226: # $instcode - The institutional code for the course
5227: # being requested, or validated for rights
5228: # to request.
5229: #
5230: # $owner - The course requestor (who will be the
5231: # course owner, in the form username:domain
5232: #
1.417 raeburn 5233: # $client - Socket open on the client.
5234: # Returns:
5235: # 1 - Indicating processing should continue.
5236: #
5237: sub validate_instcode_handler {
5238: my ($cmd, $tail, $client) = @_;
5239: my $userinput = "$cmd:$tail";
1.423 raeburn 5240: my ($dom,$instcode,$owner) = split(/:/, $tail);
1.422 raeburn 5241: $instcode = &unescape($instcode);
5242: $owner = &unescape($owner);
1.489.2.3 raeburn 5243: my ($outcome,$description,$credits) =
1.426 raeburn 5244: &localenroll::validate_instcode($dom,$instcode,$owner);
1.489.2.3 raeburn 5245: my $result = &escape($outcome).'&'.&escape($description).'&'.
5246: &escape($credits);
1.426 raeburn 5247: &Reply($client, \$result, $userinput);
1.417 raeburn 5248:
5249: return 1;
5250: }
5251: ®ister_handler("autovalidateinstcode", \&validate_instcode_handler, 0, 1, 0);
5252:
1.248 foxr 5253: # Get the official sections for which auto-enrollment is possible.
5254: # Since the admin people won't know about 'unofficial sections'
5255: # we cannot auto-enroll on them.
5256: # Formal Parameters:
5257: # $cmd - The command request that got us dispatched here.
5258: # $tail - The remainder of the request. In our case this
5259: # will be split into:
5260: # $coursecode - The course name from the admin point of view.
5261: # $cdom - The course's domain(?).
5262: # $client - Socket open on the client.
5263: # Returns:
5264: # 1 - Indiciting processing should continue.
5265: #
5266: sub get_sections_handler {
5267: my ($cmd, $tail, $client) = @_;
5268: my $userinput = "$cmd:$tail";
5269:
5270: my ($coursecode, $cdom) = split(/:/, $tail);
5271: my @secs = &localenroll::get_sections($coursecode,$cdom);
5272: my $seclist = &escape(join(':',@secs));
5273:
1.387 albertel 5274: &Reply($client, \$seclist, $userinput);
1.248 foxr 5275:
5276:
5277: return 1;
5278: }
5279: ®ister_handler("autogetsections", \&get_sections_handler, 0, 1, 0);
5280:
5281: # Validate the owner of a new course section.
5282: #
5283: # Formal Parameters:
5284: # $cmd - Command that got us dispatched.
5285: # $tail - the remainder of the command. For us this consists of a
5286: # colon separated string containing:
5287: # $inst - Course Id from the institutions point of view.
5288: # $owner - Proposed owner of the course.
5289: # $cdom - Domain of the course (from the institutions
5290: # point of view?)..
5291: # $client - Socket open on the client.
5292: #
5293: # Returns:
5294: # 1 - Processing should continue.
5295: #
5296: sub validate_course_owner_handler {
5297: my ($cmd, $tail, $client) = @_;
5298: my $userinput = "$cmd:$tail";
1.470 raeburn 5299: my ($inst_course_id, $owner, $cdom, $coowners) = split(/:/, $tail);
5300:
1.336 raeburn 5301: $owner = &unescape($owner);
1.470 raeburn 5302: $coowners = &unescape($coowners);
5303: my $outcome = &localenroll::new_course($inst_course_id,$owner,$cdom,$coowners);
1.387 albertel 5304: &Reply($client, \$outcome, $userinput);
1.248 foxr 5305:
5306:
5307:
5308: return 1;
5309: }
5310: ®ister_handler("autonewcourse", \&validate_course_owner_handler, 0, 1, 0);
1.263 albertel 5311:
1.248 foxr 5312: #
5313: # Validate a course section in the official schedule of classes
5314: # from the institutions point of view (part of autoenrollment).
5315: #
5316: # Formal Parameters:
5317: # $cmd - The command request that got us dispatched.
5318: # $tail - The tail of the command. In this case,
5319: # this is a colon separated set of words that will be split
5320: # into:
5321: # $inst_course_id - The course/section id from the
5322: # institutions point of view.
5323: # $cdom - The domain from the institutions
5324: # point of view.
5325: # $client - Socket open on the client.
5326: # Returns:
5327: # 1 - Indicating processing should continue.
5328: #
5329: sub validate_course_section_handler {
5330: my ($cmd, $tail, $client) = @_;
5331: my $userinput = "$cmd:$tail";
5332: my ($inst_course_id, $cdom) = split(/:/, $tail);
5333:
5334: my $outcome=&localenroll::validate_courseID($inst_course_id,$cdom);
1.387 albertel 5335: &Reply($client, \$outcome, $userinput);
1.248 foxr 5336:
5337:
5338: return 1;
5339: }
5340: ®ister_handler("autovalidatecourse", \&validate_course_section_handler, 0, 1, 0);
5341:
5342: #
1.340 raeburn 5343: # Validate course owner's access to enrollment data for specific class section.
5344: #
5345: #
5346: # Formal Parameters:
5347: # $cmd - The command request that got us dispatched.
5348: # $tail - The tail of the command. In this case this is a colon separated
5349: # set of words that will be split into:
5350: # $inst_class - Institutional code for the specific class section
5351: # $courseowner - The escaped username:domain of the course owner
5352: # $cdom - The domain of the course from the institution's
5353: # point of view.
5354: # $client - The socket open on the client.
5355: # Returns:
5356: # 1 - continue processing.
5357: #
5358:
5359: sub validate_class_access_handler {
5360: my ($cmd, $tail, $client) = @_;
5361: my $userinput = "$cmd:$tail";
1.383 raeburn 5362: my ($inst_class,$ownerlist,$cdom) = split(/:/, $tail);
1.392 raeburn 5363: my $owners = &unescape($ownerlist);
1.341 albertel 5364: my $outcome;
5365: eval {
5366: local($SIG{__DIE__})='DEFAULT';
1.392 raeburn 5367: $outcome=&localenroll::check_section($inst_class,$owners,$cdom);
1.341 albertel 5368: };
1.387 albertel 5369: &Reply($client,\$outcome, $userinput);
1.340 raeburn 5370:
5371: return 1;
5372: }
5373: ®ister_handler("autovalidateclass_sec", \&validate_class_access_handler, 0, 1, 0);
5374:
5375: #
5376: # Create a password for a new LON-CAPA user added by auto-enrollment.
5377: # Only used for case where authentication method for new user is localauth
1.248 foxr 5378: #
5379: # Formal Parameters:
5380: # $cmd - The command request that got us dispatched.
5381: # $tail - The tail of the command. In this case this is a colon separated
5382: # set of words that will be split into:
1.340 raeburn 5383: # $authparam - An authentication parameter (localauth parameter).
1.248 foxr 5384: # $cdom - The domain of the course from the institution's
5385: # point of view.
5386: # $client - The socket open on the client.
5387: # Returns:
5388: # 1 - continue processing.
5389: #
5390: sub create_auto_enroll_password_handler {
5391: my ($cmd, $tail, $client) = @_;
5392: my $userinput = "$cmd:$tail";
5393:
5394: my ($authparam, $cdom) = split(/:/, $userinput);
5395:
5396: my ($create_passwd,$authchk);
5397: ($authparam,
5398: $create_passwd,
5399: $authchk) = &localenroll::create_password($authparam,$cdom);
5400:
5401: &Reply($client, &escape($authparam.':'.$create_passwd.':'.$authchk)."\n",
5402: $userinput);
5403:
5404:
5405: return 1;
5406: }
5407: ®ister_handler("autocreatepassword", \&create_auto_enroll_password_handler,
5408: 0, 1, 0);
5409:
1.489.2.22 raeburn 5410: sub auto_export_grades_handler {
5411: my ($cmd, $tail, $client) = @_;
5412: my $userinput = "$cmd:$tail";
5413: my ($cdom,$cnum,$info,$data) = split(/:/,$tail);
5414: my $inforef = &Apache::lonnet::thaw_unescape($info);
5415: my $dataref = &Apache::lonnet::thaw_unescape($data);
5416: my ($outcome,$result);;
5417: eval {
5418: local($SIG{__DIE__})='DEFAULT';
5419: my %rtnhash;
5420: $outcome=&localenroll::export_grades($cdom,$cnum,$inforef,$dataref,\%rtnhash);
5421: if ($outcome eq 'ok') {
5422: foreach my $key (keys(%rtnhash)) {
5423: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($rtnhash{$key}).'&';
5424: }
5425: $result =~ s/\&$//;
5426: }
5427: };
5428: if (!$@) {
5429: if ($outcome eq 'ok') {
5430: if ($cipher) {
5431: my $cmdlength=length($result);
5432: $result.=" ";
5433: my $encresult='';
5434: for (my $encidx=0;$encidx<=$cmdlength;$encidx+=8) {
5435: $encresult.= unpack("H16",
5436: $cipher->encrypt(substr($result,
5437: $encidx,
5438: 8)));
5439: }
5440: &Reply( $client, "enc:$cmdlength:$encresult\n", $userinput);
5441: } else {
5442: &Failure( $client, "error:no_key\n", $userinput);
5443: }
5444: } else {
5445: &Reply($client, "$outcome\n", $userinput);
5446: }
5447: } else {
5448: &Failure($client,"export_error\n",$userinput);
5449: }
5450: return 1;
5451: }
5452: ®ister_handler("autoexportgrades", \&auto_export_grades_handler,
5453: 0, 1, 0);
5454:
5455:
1.248 foxr 5456: # Retrieve and remove temporary files created by/during autoenrollment.
5457: #
5458: # Formal Parameters:
5459: # $cmd - The command that got us dispatched.
5460: # $tail - The tail of the command. In our case this is a colon
5461: # separated list that will be split into:
1.489.2.24 raeburn 5462: # $filename - The name of the file to retrieve.
1.248 foxr 5463: # The filename is given as a path relative to
5464: # the LonCAPA temp file directory.
5465: # $client - Socket open on the client.
5466: #
5467: # Returns:
5468: # 1 - Continue processing.
5469: sub retrieve_auto_file_handler {
5470: my ($cmd, $tail, $client) = @_;
5471: my $userinput = "cmd:$tail";
5472:
5473: my ($filename) = split(/:/, $tail);
5474:
5475: my $source = $perlvar{'lonDaemons'}.'/tmp/'.$filename;
1.489.2.20 raeburn 5476: if ($filename =~m{/\.\./}) {
5477: &Failure($client, "refused\n", $userinput);
1.489.2.24 raeburn 5478: } elsif ($filename !~ /^$LONCAPA::match_domain\_$LONCAPA::match_courseid\_.+_classlist\.xml$/) {
5479: &Failure($client, "refused\n", $userinput);
1.489.2.20 raeburn 5480: } elsif ( (-e $source) && ($filename ne '') ) {
1.248 foxr 5481: my $reply = '';
5482: if (open(my $fh,$source)) {
5483: while (<$fh>) {
5484: chomp($_);
5485: $_ =~ s/^\s+//g;
5486: $_ =~ s/\s+$//g;
5487: $reply .= $_;
5488: }
5489: close($fh);
5490: &Reply($client, &escape($reply)."\n", $userinput);
5491:
5492: # Does this have to be uncommented??!? (RF).
5493: #
5494: # unlink($source);
5495: } else {
5496: &Failure($client, "error\n", $userinput);
5497: }
5498: } else {
5499: &Failure($client, "error\n", $userinput);
5500: }
5501:
5502:
5503: return 1;
5504: }
5505: ®ister_handler("autoretrieve", \&retrieve_auto_file_handler, 0,1,0);
5506:
1.423 raeburn 5507: sub crsreq_checks_handler {
5508: my ($cmd, $tail, $client) = @_;
5509: my $userinput = "$cmd:$tail";
5510: my $dom = $tail;
5511: my $result;
1.489.2.12 raeburn 5512: my @reqtypes = ('official','unofficial','community','textbook');
1.423 raeburn 5513: eval {
5514: local($SIG{__DIE__})='DEFAULT';
5515: my %validations;
1.424 raeburn 5516: my $response = &localenroll::crsreq_checks($dom,\@reqtypes,
5517: \%validations);
1.423 raeburn 5518: if ($response eq 'ok') {
5519: foreach my $key (keys(%validations)) {
5520: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($validations{$key}).'&';
5521: }
5522: $result =~ s/\&$//;
5523: } else {
5524: $result = 'error';
5525: }
5526: };
5527: if (!$@) {
5528: &Reply($client, \$result, $userinput);
5529: } else {
5530: &Failure($client,"unknown_cmd\n",$userinput);
5531: }
5532: return 1;
5533: }
5534: ®ister_handler("autocrsreqchecks", \&crsreq_checks_handler, 0, 1, 0);
5535:
5536: sub validate_crsreq_handler {
5537: my ($cmd, $tail, $client) = @_;
5538: my $userinput = "$cmd:$tail";
1.489.2.13 raeburn 5539: my ($dom,$owner,$crstype,$inststatuslist,$instcode,$instseclist,$customdata) = split(/:/, $tail);
1.423 raeburn 5540: $instcode = &unescape($instcode);
5541: $owner = &unescape($owner);
5542: $crstype = &unescape($crstype);
5543: $inststatuslist = &unescape($inststatuslist);
5544: $instcode = &unescape($instcode);
5545: $instseclist = &unescape($instseclist);
1.489.2.13 raeburn 5546: my $custominfo = &Apache::lonnet::thaw_unescape($customdata);
1.423 raeburn 5547: my $outcome;
5548: eval {
5549: local($SIG{__DIE__})='DEFAULT';
5550: $outcome = &localenroll::validate_crsreq($dom,$owner,$crstype,
5551: $inststatuslist,$instcode,
1.489.2.13 raeburn 5552: $instseclist,$custominfo);
1.423 raeburn 5553: };
5554: if (!$@) {
5555: &Reply($client, \$outcome, $userinput);
5556: } else {
5557: &Failure($client,"unknown_cmd\n",$userinput);
5558: }
5559: return 1;
5560: }
5561: ®ister_handler("autocrsreqvalidation", \&validate_crsreq_handler, 0, 1, 0);
5562:
1.489.2.11 raeburn 5563: sub crsreq_update_handler {
5564: my ($cmd, $tail, $client) = @_;
5565: my $userinput = "$cmd:$tail";
1.489.2.14 raeburn 5566: my ($cdom,$cnum,$crstype,$action,$ownername,$ownerdomain,$fullname,$title,$code,
5567: $accessstart,$accessend,$infohashref) =
1.489.2.11 raeburn 5568: split(/:/, $tail);
5569: $crstype = &unescape($crstype);
5570: $action = &unescape($action);
5571: $ownername = &unescape($ownername);
5572: $ownerdomain = &unescape($ownerdomain);
5573: $fullname = &unescape($fullname);
5574: $title = &unescape($title);
5575: $code = &unescape($code);
1.489.2.14 raeburn 5576: $accessstart = &unescape($accessstart);
5577: $accessend = &unescape($accessend);
1.489.2.11 raeburn 5578: my $incoming = &Apache::lonnet::thaw_unescape($infohashref);
5579: my ($result,$outcome);
5580: eval {
5581: local($SIG{__DIE__})='DEFAULT';
5582: my %rtnhash;
5583: $outcome = &localenroll::crsreq_updates($cdom,$cnum,$crstype,$action,
5584: $ownername,$ownerdomain,$fullname,
1.489.2.14 raeburn 5585: $title,$code,$accessstart,$accessend,
5586: $incoming,\%rtnhash);
1.489.2.11 raeburn 5587: if ($outcome eq 'ok') {
1.489.2.18 raeburn 5588: my @posskeys = qw(createdweb createdmsg createdcustomized createdactions queuedweb queuedmsg formitems reviewweb validationjs onload javascript);
1.489.2.11 raeburn 5589: foreach my $key (keys(%rtnhash)) {
5590: if (grep(/^\Q$key\E/,@posskeys)) {
5591: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($rtnhash{$key}).'&';
5592: }
5593: }
5594: $result =~ s/\&$//;
5595: }
5596: };
5597: if (!$@) {
5598: if ($outcome eq 'ok') {
5599: &Reply($client, \$result, $userinput);
5600: } else {
5601: &Reply($client, "format_error\n", $userinput);
5602: }
5603: } else {
5604: &Failure($client,"unknown_cmd\n",$userinput);
5605: }
5606: return 1;
5607: }
5608: ®ister_handler("autocrsrequpdate", \&crsreq_update_handler, 0, 1, 0);
5609:
1.248 foxr 5610: #
5611: # Read and retrieve institutional code format (for support form).
5612: # Formal Parameters:
5613: # $cmd - Command that dispatched us.
5614: # $tail - Tail of the command. In this case it conatins
5615: # the course domain and the coursename.
5616: # $client - Socket open on the client.
5617: # Returns:
5618: # 1 - Continue processing.
5619: #
5620: sub get_institutional_code_format_handler {
5621: my ($cmd, $tail, $client) = @_;
5622: my $userinput = "$cmd:$tail";
5623:
5624: my $reply;
5625: my($cdom,$course) = split(/:/,$tail);
5626: my @pairs = split/\&/,$course;
5627: my %instcodes = ();
5628: my %codes = ();
5629: my @codetitles = ();
5630: my %cat_titles = ();
5631: my %cat_order = ();
5632: foreach (@pairs) {
5633: my ($key,$value) = split/=/,$_;
5634: $instcodes{&unescape($key)} = &unescape($value);
5635: }
5636: my $formatreply = &localenroll::instcode_format($cdom,
5637: \%instcodes,
5638: \%codes,
5639: \@codetitles,
5640: \%cat_titles,
5641: \%cat_order);
5642: if ($formatreply eq 'ok') {
1.365 albertel 5643: my $codes_str = &Apache::lonnet::hash2str(%codes);
5644: my $codetitles_str = &Apache::lonnet::array2str(@codetitles);
5645: my $cat_titles_str = &Apache::lonnet::hash2str(%cat_titles);
5646: my $cat_order_str = &Apache::lonnet::hash2str(%cat_order);
1.248 foxr 5647: &Reply($client,
5648: $codes_str.':'.$codetitles_str.':'.$cat_titles_str.':'
5649: .$cat_order_str."\n",
5650: $userinput);
5651: } else {
5652: # this else branch added by RF since if not ok, lonc will
5653: # hang waiting on reply until timeout.
5654: #
5655: &Reply($client, "format_error\n", $userinput);
5656: }
5657:
5658: return 1;
5659: }
1.265 albertel 5660: ®ister_handler("autoinstcodeformat",
5661: \&get_institutional_code_format_handler,0,1,0);
1.246 foxr 5662:
1.345 raeburn 5663: sub get_institutional_defaults_handler {
5664: my ($cmd, $tail, $client) = @_;
5665: my $userinput = "$cmd:$tail";
5666:
5667: my $dom = $tail;
5668: my %defaults_hash;
5669: my @code_order;
5670: my $outcome;
5671: eval {
5672: local($SIG{__DIE__})='DEFAULT';
5673: $outcome = &localenroll::instcode_defaults($dom,\%defaults_hash,
5674: \@code_order);
5675: };
5676: if (!$@) {
5677: if ($outcome eq 'ok') {
5678: my $result='';
5679: while (my ($key,$value) = each(%defaults_hash)) {
5680: $result.=&escape($key).'='.&escape($value).'&';
5681: }
5682: $result .= 'code_order='.&escape(join('&',@code_order));
1.387 albertel 5683: &Reply($client,\$result,$userinput);
1.345 raeburn 5684: } else {
5685: &Reply($client,"error\n", $userinput);
5686: }
5687: } else {
5688: &Failure($client,"unknown_cmd\n",$userinput);
5689: }
5690: }
5691: ®ister_handler("autoinstcodedefaults",
5692: \&get_institutional_defaults_handler,0,1,0);
5693:
1.416 raeburn 5694: sub get_possible_instcodes_handler {
5695: my ($cmd, $tail, $client) = @_;
5696: my $userinput = "$cmd:$tail";
5697:
5698: my $reply;
5699: my $cdom = $tail;
1.417 raeburn 5700: my (@codetitles,%cat_titles,%cat_order,@code_order);
1.416 raeburn 5701: my $formatreply = &localenroll::possible_instcodes($cdom,
5702: \@codetitles,
5703: \%cat_titles,
1.417 raeburn 5704: \%cat_order,
5705: \@code_order);
1.416 raeburn 5706: if ($formatreply eq 'ok') {
5707: my $result = join('&',map {&escape($_);} (@codetitles)).':';
1.417 raeburn 5708: $result .= join('&',map {&escape($_);} (@code_order)).':';
1.416 raeburn 5709: foreach my $key (keys(%cat_titles)) {
5710: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($cat_titles{$key}).'&';
5711: }
5712: $result =~ s/\&$//;
5713: $result .= ':';
5714: foreach my $key (keys(%cat_order)) {
5715: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($cat_order{$key}).'&';
5716: }
5717: $result =~ s/\&$//;
5718: &Reply($client,\$result,$userinput);
5719: } else {
5720: &Reply($client, "format_error\n", $userinput);
5721: }
5722: return 1;
5723: }
5724: ®ister_handler("autopossibleinstcodes",
5725: \&get_possible_instcodes_handler,0,1,0);
5726:
1.381 raeburn 5727: sub get_institutional_user_rules {
5728: my ($cmd, $tail, $client) = @_;
5729: my $userinput = "$cmd:$tail";
5730: my $dom = &unescape($tail);
5731: my (%rules_hash,@rules_order);
5732: my $outcome;
5733: eval {
5734: local($SIG{__DIE__})='DEFAULT';
5735: $outcome = &localenroll::username_rules($dom,\%rules_hash,\@rules_order);
5736: };
5737: if (!$@) {
5738: if ($outcome eq 'ok') {
5739: my $result;
5740: foreach my $key (keys(%rules_hash)) {
5741: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($rules_hash{$key}).'&';
5742: }
5743: $result =~ s/\&$//;
5744: $result .= ':';
5745: if (@rules_order > 0) {
5746: foreach my $item (@rules_order) {
5747: $result .= &escape($item).'&';
5748: }
5749: }
5750: $result =~ s/\&$//;
1.387 albertel 5751: &Reply($client,\$result,$userinput);
1.381 raeburn 5752: } else {
5753: &Reply($client,"error\n", $userinput);
5754: }
5755: } else {
5756: &Failure($client,"unknown_cmd\n",$userinput);
5757: }
5758: }
5759: ®ister_handler("instuserrules",\&get_institutional_user_rules,0,1,0);
5760:
1.389 raeburn 5761: sub get_institutional_id_rules {
5762: my ($cmd, $tail, $client) = @_;
5763: my $userinput = "$cmd:$tail";
5764: my $dom = &unescape($tail);
5765: my (%rules_hash,@rules_order);
5766: my $outcome;
5767: eval {
5768: local($SIG{__DIE__})='DEFAULT';
5769: $outcome = &localenroll::id_rules($dom,\%rules_hash,\@rules_order);
5770: };
5771: if (!$@) {
5772: if ($outcome eq 'ok') {
5773: my $result;
5774: foreach my $key (keys(%rules_hash)) {
5775: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($rules_hash{$key}).'&';
5776: }
5777: $result =~ s/\&$//;
5778: $result .= ':';
5779: if (@rules_order > 0) {
5780: foreach my $item (@rules_order) {
5781: $result .= &escape($item).'&';
5782: }
5783: }
5784: $result =~ s/\&$//;
5785: &Reply($client,\$result,$userinput);
5786: } else {
5787: &Reply($client,"error\n", $userinput);
5788: }
5789: } else {
5790: &Failure($client,"unknown_cmd\n",$userinput);
5791: }
5792: }
5793: ®ister_handler("instidrules",\&get_institutional_id_rules,0,1,0);
5794:
1.397 raeburn 5795: sub get_institutional_selfcreate_rules {
1.396 raeburn 5796: my ($cmd, $tail, $client) = @_;
5797: my $userinput = "$cmd:$tail";
5798: my $dom = &unescape($tail);
5799: my (%rules_hash,@rules_order);
5800: my $outcome;
5801: eval {
5802: local($SIG{__DIE__})='DEFAULT';
1.397 raeburn 5803: $outcome = &localenroll::selfcreate_rules($dom,\%rules_hash,\@rules_order);
1.396 raeburn 5804: };
5805: if (!$@) {
5806: if ($outcome eq 'ok') {
5807: my $result;
5808: foreach my $key (keys(%rules_hash)) {
5809: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($rules_hash{$key}).'&';
5810: }
5811: $result =~ s/\&$//;
5812: $result .= ':';
5813: if (@rules_order > 0) {
5814: foreach my $item (@rules_order) {
5815: $result .= &escape($item).'&';
5816: }
5817: }
5818: $result =~ s/\&$//;
5819: &Reply($client,\$result,$userinput);
5820: } else {
5821: &Reply($client,"error\n", $userinput);
5822: }
5823: } else {
5824: &Failure($client,"unknown_cmd\n",$userinput);
5825: }
5826: }
1.397 raeburn 5827: ®ister_handler("instemailrules",\&get_institutional_selfcreate_rules,0,1,0);
1.396 raeburn 5828:
1.381 raeburn 5829:
5830: sub institutional_username_check {
5831: my ($cmd, $tail, $client) = @_;
5832: my $userinput = "$cmd:$tail";
5833: my %rulecheck;
5834: my $outcome;
5835: my ($udom,$uname,@rules) = split(/:/,$tail);
5836: $udom = &unescape($udom);
5837: $uname = &unescape($uname);
5838: @rules = map {&unescape($_);} (@rules);
5839: eval {
5840: local($SIG{__DIE__})='DEFAULT';
5841: $outcome = &localenroll::username_check($udom,$uname,\@rules,\%rulecheck);
5842: };
5843: if (!$@) {
5844: if ($outcome eq 'ok') {
5845: my $result='';
5846: foreach my $key (keys(%rulecheck)) {
5847: $result.=&escape($key).'='.&Apache::lonnet::freeze_escape($rulecheck{$key}).'&';
5848: }
1.387 albertel 5849: &Reply($client,\$result,$userinput);
1.381 raeburn 5850: } else {
5851: &Reply($client,"error\n", $userinput);
5852: }
5853: } else {
5854: &Failure($client,"unknown_cmd\n",$userinput);
5855: }
5856: }
5857: ®ister_handler("instrulecheck",\&institutional_username_check,0,1,0);
5858:
1.389 raeburn 5859: sub institutional_id_check {
5860: my ($cmd, $tail, $client) = @_;
5861: my $userinput = "$cmd:$tail";
5862: my %rulecheck;
5863: my $outcome;
5864: my ($udom,$id,@rules) = split(/:/,$tail);
5865: $udom = &unescape($udom);
5866: $id = &unescape($id);
5867: @rules = map {&unescape($_);} (@rules);
5868: eval {
5869: local($SIG{__DIE__})='DEFAULT';
5870: $outcome = &localenroll::id_check($udom,$id,\@rules,\%rulecheck);
5871: };
5872: if (!$@) {
5873: if ($outcome eq 'ok') {
5874: my $result='';
5875: foreach my $key (keys(%rulecheck)) {
5876: $result.=&escape($key).'='.&Apache::lonnet::freeze_escape($rulecheck{$key}).'&';
5877: }
5878: &Reply($client,\$result,$userinput);
5879: } else {
5880: &Reply($client,"error\n", $userinput);
5881: }
5882: } else {
5883: &Failure($client,"unknown_cmd\n",$userinput);
5884: }
5885: }
5886: ®ister_handler("instidrulecheck",\&institutional_id_check,0,1,0);
1.345 raeburn 5887:
1.397 raeburn 5888: sub institutional_selfcreate_check {
1.396 raeburn 5889: my ($cmd, $tail, $client) = @_;
5890: my $userinput = "$cmd:$tail";
5891: my %rulecheck;
5892: my $outcome;
5893: my ($udom,$email,@rules) = split(/:/,$tail);
5894: $udom = &unescape($udom);
5895: $email = &unescape($email);
5896: @rules = map {&unescape($_);} (@rules);
5897: eval {
5898: local($SIG{__DIE__})='DEFAULT';
1.397 raeburn 5899: $outcome = &localenroll::selfcreate_check($udom,$email,\@rules,\%rulecheck);
1.396 raeburn 5900: };
5901: if (!$@) {
5902: if ($outcome eq 'ok') {
5903: my $result='';
5904: foreach my $key (keys(%rulecheck)) {
5905: $result.=&escape($key).'='.&Apache::lonnet::freeze_escape($rulecheck{$key}).'&';
5906: }
5907: &Reply($client,\$result,$userinput);
5908: } else {
5909: &Reply($client,"error\n", $userinput);
5910: }
5911: } else {
5912: &Failure($client,"unknown_cmd\n",$userinput);
5913: }
5914: }
1.397 raeburn 5915: ®ister_handler("instselfcreatecheck",\&institutional_selfcreate_check,0,1,0);
1.396 raeburn 5916:
1.317 raeburn 5917: # Get domain specific conditions for import of student photographs to a course
5918: #
5919: # Retrieves information from photo_permission subroutine in localenroll.
5920: # Returns outcome (ok) if no processing errors, and whether course owner is
5921: # required to accept conditions of use (yes/no).
5922: #
5923: #
5924: sub photo_permission_handler {
5925: my ($cmd, $tail, $client) = @_;
5926: my $userinput = "$cmd:$tail";
5927: my $cdom = $tail;
5928: my ($perm_reqd,$conditions);
1.320 albertel 5929: my $outcome;
5930: eval {
5931: local($SIG{__DIE__})='DEFAULT';
5932: $outcome = &localenroll::photo_permission($cdom,\$perm_reqd,
5933: \$conditions);
5934: };
5935: if (!$@) {
5936: &Reply($client, &escape($outcome.':'.$perm_reqd.':'. $conditions)."\n",
5937: $userinput);
5938: } else {
5939: &Failure($client,"unknown_cmd\n",$userinput);
5940: }
5941: return 1;
1.317 raeburn 5942: }
5943: ®ister_handler("autophotopermission",\&photo_permission_handler,0,1,0);
5944:
5945: #
5946: # Checks if student photo is available for a user in the domain, in the user's
5947: # directory (in /userfiles/internal/studentphoto.jpg).
5948: # Uses localstudentphoto:fetch() to ensure there is an up to date copy of
5949: # the student's photo.
5950:
5951: sub photo_check_handler {
5952: my ($cmd, $tail, $client) = @_;
5953: my $userinput = "$cmd:$tail";
5954: my ($udom,$uname,$pid) = split(/:/,$tail);
5955: $udom = &unescape($udom);
5956: $uname = &unescape($uname);
5957: $pid = &unescape($pid);
5958: my $path=&propath($udom,$uname).'/userfiles/internal/';
5959: if (!-e $path) {
5960: &mkpath($path);
5961: }
5962: my $response;
5963: my $result = &localstudentphoto::fetch($udom,$uname,$pid,\$response);
5964: $result .= ':'.$response;
5965: &Reply($client, &escape($result)."\n",$userinput);
1.320 albertel 5966: return 1;
1.317 raeburn 5967: }
5968: ®ister_handler("autophotocheck",\&photo_check_handler,0,1,0);
5969:
5970: #
5971: # Retrieve information from localenroll about whether to provide a button
5972: # for users who have enbled import of student photos to initiate an
5973: # update of photo files for registered students. Also include
5974: # comment to display alongside button.
5975:
5976: sub photo_choice_handler {
5977: my ($cmd, $tail, $client) = @_;
5978: my $userinput = "$cmd:$tail";
5979: my $cdom = &unescape($tail);
1.320 albertel 5980: my ($update,$comment);
5981: eval {
5982: local($SIG{__DIE__})='DEFAULT';
5983: ($update,$comment) = &localenroll::manager_photo_update($cdom);
5984: };
5985: if (!$@) {
5986: &Reply($client,&escape($update).':'.&escape($comment)."\n",$userinput);
5987: } else {
5988: &Failure($client,"unknown_cmd\n",$userinput);
5989: }
5990: return 1;
1.317 raeburn 5991: }
5992: ®ister_handler("autophotochoice",\&photo_choice_handler,0,1,0);
5993:
1.265 albertel 5994: #
5995: # Gets a student's photo to exist (in the correct image type) in the user's
5996: # directory.
5997: # Formal Parameters:
5998: # $cmd - The command request that got us dispatched.
5999: # $tail - A colon separated set of words that will be split into:
6000: # $domain - student's domain
6001: # $uname - student username
6002: # $type - image type desired
6003: # $client - The socket open on the client.
6004: # Returns:
6005: # 1 - continue processing.
1.317 raeburn 6006:
1.265 albertel 6007: sub student_photo_handler {
6008: my ($cmd, $tail, $client) = @_;
1.317 raeburn 6009: my ($domain,$uname,$ext,$type) = split(/:/, $tail);
1.265 albertel 6010:
1.317 raeburn 6011: my $path=&propath($domain,$uname). '/userfiles/internal/';
6012: my $filename = 'studentphoto.'.$ext;
6013: if ($type eq 'thumbnail') {
6014: $filename = 'studentphoto_tn.'.$ext;
6015: }
6016: if (-e $path.$filename) {
1.265 albertel 6017: &Reply($client,"ok\n","$cmd:$tail");
6018: return 1;
6019: }
6020: &mkpath($path);
1.317 raeburn 6021: my $file;
6022: if ($type eq 'thumbnail') {
1.320 albertel 6023: eval {
6024: local($SIG{__DIE__})='DEFAULT';
6025: $file=&localstudentphoto::fetch_thumbnail($domain,$uname);
6026: };
1.317 raeburn 6027: } else {
6028: $file=&localstudentphoto::fetch($domain,$uname);
6029: }
1.265 albertel 6030: if (!$file) {
6031: &Failure($client,"unavailable\n","$cmd:$tail");
6032: return 1;
6033: }
1.317 raeburn 6034: if (!-e $path.$filename) { &convert_photo($file,$path.$filename); }
6035: if (-e $path.$filename) {
1.265 albertel 6036: &Reply($client,"ok\n","$cmd:$tail");
6037: return 1;
6038: }
6039: &Failure($client,"unable_to_convert\n","$cmd:$tail");
6040: return 1;
6041: }
6042: ®ister_handler("studentphoto", \&student_photo_handler, 0, 1, 0);
1.246 foxr 6043:
1.361 raeburn 6044: sub inst_usertypes_handler {
6045: my ($cmd, $domain, $client) = @_;
6046: my $res;
6047: my $userinput = $cmd.":".$domain; # For logging purposes.
1.370 albertel 6048: my (%typeshash,@order,$result);
6049: eval {
6050: local($SIG{__DIE__})='DEFAULT';
6051: $result=&localenroll::inst_usertypes($domain,\%typeshash,\@order);
6052: };
6053: if ($result eq 'ok') {
1.361 raeburn 6054: if (keys(%typeshash) > 0) {
6055: foreach my $key (keys(%typeshash)) {
6056: $res.=&escape($key).'='.&escape($typeshash{$key}).'&';
6057: }
6058: }
6059: $res=~s/\&$//;
6060: $res .= ':';
6061: if (@order > 0) {
6062: foreach my $item (@order) {
6063: $res .= &escape($item).'&';
6064: }
6065: }
6066: $res=~s/\&$//;
6067: }
1.387 albertel 6068: &Reply($client, \$res, $userinput);
1.361 raeburn 6069: return 1;
6070: }
6071: ®ister_handler("inst_usertypes", \&inst_usertypes_handler, 0, 1, 0);
6072:
1.264 albertel 6073: # mkpath makes all directories for a file, expects an absolute path with a
6074: # file or a trailing / if just a dir is passed
6075: # returns 1 on success 0 on failure
6076: sub mkpath {
6077: my ($file)=@_;
6078: my @parts=split(/\//,$file,-1);
6079: my $now=$parts[0].'/'.$parts[1].'/'.$parts[2];
6080: for (my $i=3;$i<= ($#parts-1);$i++) {
1.265 albertel 6081: $now.='/'.$parts[$i];
1.264 albertel 6082: if (!-e $now) {
6083: if (!mkdir($now,0770)) { return 0; }
6084: }
6085: }
6086: return 1;
6087: }
6088:
1.207 foxr 6089: #---------------------------------------------------------------
6090: #
6091: # Getting, decoding and dispatching requests:
6092: #
6093: #
6094: # Get a Request:
6095: # Gets a Request message from the client. The transaction
6096: # is defined as a 'line' of text. We remove the new line
6097: # from the text line.
1.226 foxr 6098: #
1.211 albertel 6099: sub get_request {
1.207 foxr 6100: my $input = <$client>;
6101: chomp($input);
1.226 foxr 6102:
1.234 foxr 6103: &Debug("get_request: Request = $input\n");
1.207 foxr 6104:
6105: &status('Processing '.$clientname.':'.$input);
6106:
6107: return $input;
6108: }
1.212 foxr 6109: #---------------------------------------------------------------
6110: #
6111: # Process a request. This sub should shrink as each action
6112: # gets farmed out into a separat sub that is registered
6113: # with the dispatch hash.
6114: #
6115: # Parameters:
6116: # user_input - The request received from the client (lonc).
6117: # Returns:
6118: # true to keep processing, false if caller should exit.
6119: #
6120: sub process_request {
6121: my ($userinput) = @_; # Easier for now to break style than to
6122: # fix all the userinput -> user_input.
6123: my $wasenc = 0; # True if request was encrypted.
6124: # ------------------------------------------------------------ See if encrypted
1.322 albertel 6125: # for command
6126: # sethost:<server>
6127: # <command>:<args>
6128: # we just send it to the processor
6129: # for
6130: # sethost:<server>:<command>:<args>
6131: # we do the implict set host and then do the command
6132: if ($userinput =~ /^sethost:/) {
6133: (my $cmd,my $newid,$userinput) = split(':',$userinput,3);
6134: if (defined($userinput)) {
6135: &sethost("$cmd:$newid");
6136: } else {
6137: $userinput = "$cmd:$newid";
6138: }
6139: }
6140:
1.212 foxr 6141: if ($userinput =~ /^enc/) {
6142: $userinput = decipher($userinput);
6143: $wasenc=1;
6144: if(!$userinput) { # Cipher not defined.
1.251 foxr 6145: &Failure($client, "error: Encrypted data without negotated key\n");
1.212 foxr 6146: return 0;
6147: }
6148: }
6149: Debug("process_request: $userinput\n");
6150:
1.213 foxr 6151: #
6152: # The 'correct way' to add a command to lond is now to
6153: # write a sub to execute it and Add it to the command dispatch
6154: # hash via a call to register_handler.. The comments to that
6155: # sub should give you enough to go on to show how to do this
6156: # along with the examples that are building up as this code
6157: # is getting refactored. Until all branches of the
6158: # if/elseif monster below have been factored out into
6159: # separate procesor subs, if the dispatch hash is missing
6160: # the command keyword, we will fall through to the remainder
6161: # of the if/else chain below in order to keep this thing in
6162: # working order throughout the transmogrification.
6163:
6164: my ($command, $tail) = split(/:/, $userinput, 2);
6165: chomp($command);
6166: chomp($tail);
6167: $tail =~ s/(\r)//; # This helps people debugging with e.g. telnet.
1.214 foxr 6168: $command =~ s/(\r)//; # And this too for parameterless commands.
6169: if(!$tail) {
6170: $tail =""; # defined but blank.
6171: }
1.213 foxr 6172:
6173: &Debug("Command received: $command, encoded = $wasenc");
6174:
6175: if(defined $Dispatcher{$command}) {
6176:
6177: my $dispatch_info = $Dispatcher{$command};
6178: my $handler = $$dispatch_info[0];
6179: my $need_encode = $$dispatch_info[1];
6180: my $client_types = $$dispatch_info[2];
6181: Debug("Matched dispatch hash: mustencode: $need_encode "
6182: ."ClientType $client_types");
6183:
6184: # Validate the request:
6185:
6186: my $ok = 1;
6187: my $requesterprivs = 0;
6188: if(&isClient()) {
6189: $requesterprivs |= $CLIENT_OK;
6190: }
6191: if(&isManager()) {
6192: $requesterprivs |= $MANAGER_OK;
6193: }
6194: if($need_encode && (!$wasenc)) {
6195: Debug("Must encode but wasn't: $need_encode $wasenc");
6196: $ok = 0;
6197: }
6198: if(($client_types & $requesterprivs) == 0) {
6199: Debug("Client not privileged to do this operation");
6200: $ok = 0;
6201: }
6202:
6203: if($ok) {
6204: Debug("Dispatching to handler $command $tail");
6205: my $keep_going = &$handler($command, $tail, $client);
6206: return $keep_going;
6207: } else {
6208: Debug("Refusing to dispatch because client did not match requirements");
6209: Failure($client, "refused\n", $userinput);
6210: return 1;
6211: }
6212:
6213: }
6214:
1.262 foxr 6215: print $client "unknown_cmd\n";
1.212 foxr 6216: # -------------------------------------------------------------------- complete
6217: Debug("process_request - returning 1");
6218: return 1;
6219: }
1.207 foxr 6220: #
6221: # Decipher encoded traffic
6222: # Parameters:
6223: # input - Encoded data.
6224: # Returns:
6225: # Decoded data or undef if encryption key was not yet negotiated.
6226: # Implicit input:
6227: # cipher - This global holds the negotiated encryption key.
6228: #
1.211 albertel 6229: sub decipher {
1.207 foxr 6230: my ($input) = @_;
6231: my $output = '';
1.212 foxr 6232:
6233:
1.207 foxr 6234: if($cipher) {
6235: my($enc, $enclength, $encinput) = split(/:/, $input);
6236: for(my $encidx = 0; $encidx < length($encinput); $encidx += 16) {
6237: $output .=
6238: $cipher->decrypt(pack("H16", substr($encinput, $encidx, 16)));
6239: }
6240: return substr($output, 0, $enclength);
6241: } else {
6242: return undef;
6243: }
6244: }
6245:
6246: #
6247: # Register a command processor. This function is invoked to register a sub
6248: # to process a request. Once registered, the ProcessRequest sub can automatically
6249: # dispatch requests to an appropriate sub, and do the top level validity checking
6250: # as well:
6251: # - Is the keyword recognized.
6252: # - Is the proper client type attempting the request.
6253: # - Is the request encrypted if it has to be.
6254: # Parameters:
6255: # $request_name - Name of the request being registered.
6256: # This is the command request that will match
6257: # against the hash keywords to lookup the information
6258: # associated with the dispatch information.
6259: # $procedure - Reference to a sub to call to process the request.
6260: # All subs get called as follows:
6261: # Procedure($cmd, $tail, $replyfd, $key)
6262: # $cmd - the actual keyword that invoked us.
6263: # $tail - the tail of the request that invoked us.
6264: # $replyfd- File descriptor connected to the client
6265: # $must_encode - True if the request must be encoded to be good.
6266: # $client_ok - True if it's ok for a client to request this.
6267: # $manager_ok - True if it's ok for a manager to request this.
6268: # Side effects:
6269: # - On success, the Dispatcher hash has an entry added for the key $RequestName
6270: # - On failure, the program will die as it's a bad internal bug to try to
6271: # register a duplicate command handler.
6272: #
1.211 albertel 6273: sub register_handler {
1.212 foxr 6274: my ($request_name,$procedure,$must_encode, $client_ok,$manager_ok) = @_;
1.207 foxr 6275:
6276: # Don't allow duplication#
6277:
6278: if (defined $Dispatcher{$request_name}) {
6279: die "Attempting to define a duplicate request handler for $request_name\n";
6280: }
6281: # Build the client type mask:
6282:
6283: my $client_type_mask = 0;
6284: if($client_ok) {
6285: $client_type_mask |= $CLIENT_OK;
6286: }
6287: if($manager_ok) {
6288: $client_type_mask |= $MANAGER_OK;
6289: }
6290:
6291: # Enter the hash:
6292:
6293: my @entry = ($procedure, $must_encode, $client_type_mask);
6294:
6295: $Dispatcher{$request_name} = \@entry;
6296:
6297: }
6298:
6299:
6300: #------------------------------------------------------------------
6301:
6302:
6303:
6304:
1.141 foxr 6305: #
1.96 foxr 6306: # Convert an error return code from lcpasswd to a string value.
6307: #
6308: sub lcpasswdstrerror {
6309: my $ErrorCode = shift;
1.97 foxr 6310: if(($ErrorCode < 0) || ($ErrorCode > $lastpwderror)) {
1.96 foxr 6311: return "lcpasswd Unrecognized error return value ".$ErrorCode;
6312: } else {
1.98 foxr 6313: return $passwderrors[$ErrorCode];
1.96 foxr 6314: }
6315: }
6316:
1.23 harris41 6317: # grabs exception and records it to log before exiting
6318: sub catchexception {
1.27 albertel 6319: my ($error)=@_;
1.25 www 6320: $SIG{'QUIT'}='DEFAULT';
6321: $SIG{__DIE__}='DEFAULT';
1.165 albertel 6322: &status("Catching exception");
1.190 albertel 6323: &logthis("<font color='red'>CRITICAL: "
1.373 albertel 6324: ."ABNORMAL EXIT. Child $$ for server ".$perlvar{'lonHostID'}." died through "
1.27 albertel 6325: ."a crash with this error msg->[$error]</font>");
1.57 www 6326: &logthis('Famous last words: '.$status.' - '.$lastlog);
1.27 albertel 6327: if ($client) { print $client "error: $error\n"; }
1.59 www 6328: $server->close();
1.27 albertel 6329: die($error);
1.23 harris41 6330: }
1.63 www 6331: sub timeout {
1.165 albertel 6332: &status("Handling Timeout");
1.190 albertel 6333: &logthis("<font color='red'>CRITICAL: TIME OUT ".$$."</font>");
1.63 www 6334: &catchexception('Timeout');
6335: }
1.22 harris41 6336: # -------------------------------- Set signal handlers to record abnormal exits
6337:
1.226 foxr 6338:
1.22 harris41 6339: $SIG{'QUIT'}=\&catchexception;
6340: $SIG{__DIE__}=\&catchexception;
6341:
1.81 matthew 6342: # ---------------------------------- Read loncapa_apache.conf and loncapa.conf
1.95 harris41 6343: &status("Read loncapa.conf and loncapa_apache.conf");
6344: my $perlvarref=LONCAPA::Configuration::read_conf('loncapa.conf');
1.141 foxr 6345: %perlvar=%{$perlvarref};
1.80 harris41 6346: undef $perlvarref;
1.19 www 6347:
1.35 harris41 6348: # ----------------------------- Make sure this process is running from user=www
6349: my $wwwid=getpwnam('www');
6350: if ($wwwid!=$<) {
1.134 albertel 6351: my $emailto="$perlvar{'lonAdmEMail'},$perlvar{'lonSysEMail'}";
6352: my $subj="LON: $currenthostid User ID mismatch";
1.37 harris41 6353: system("echo 'User ID mismatch. lond must be run as user www.' |\
1.35 harris41 6354: mailto $emailto -s '$subj' > /dev/null");
6355: exit 1;
6356: }
6357:
1.19 www 6358: # --------------------------------------------- Check if other instance running
6359:
6360: my $pidfile="$perlvar{'lonDaemons'}/logs/lond.pid";
6361:
6362: if (-e $pidfile) {
6363: my $lfh=IO::File->new("$pidfile");
6364: my $pide=<$lfh>;
6365: chomp($pide);
1.29 harris41 6366: if (kill 0 => $pide) { die "already running"; }
1.19 www 6367: }
1.1 albertel 6368:
6369: # ------------------------------------------------------------- Read hosts file
6370:
6371:
6372:
6373: # establish SERVER socket, bind and listen.
6374: $server = IO::Socket::INET->new(LocalPort => $perlvar{'londPort'},
6375: Type => SOCK_STREAM,
6376: Proto => 'tcp',
1.469 foxr 6377: ReuseAddr => 1,
1.1 albertel 6378: Listen => 10 )
1.29 harris41 6379: or die "making socket: $@\n";
1.1 albertel 6380:
6381: # --------------------------------------------------------- Do global variables
6382:
6383: # global variables
6384:
1.134 albertel 6385: my %children = (); # keys are current child process IDs
1.1 albertel 6386:
6387: sub REAPER { # takes care of dead children
6388: $SIG{CHLD} = \&REAPER;
1.165 albertel 6389: &status("Handling child death");
1.178 foxr 6390: my $pid;
6391: do {
6392: $pid = waitpid(-1,&WNOHANG());
6393: if (defined($children{$pid})) {
6394: &logthis("Child $pid died");
6395: delete($children{$pid});
1.183 albertel 6396: } elsif ($pid > 0) {
1.178 foxr 6397: &logthis("Unknown Child $pid died");
6398: }
6399: } while ( $pid > 0 );
6400: foreach my $child (keys(%children)) {
6401: $pid = waitpid($child,&WNOHANG());
6402: if ($pid > 0) {
6403: &logthis("Child $child - $pid looks like we missed it's death");
6404: delete($children{$pid});
6405: }
1.176 albertel 6406: }
1.165 albertel 6407: &status("Finished Handling child death");
1.1 albertel 6408: }
6409:
6410: sub HUNTSMAN { # signal handler for SIGINT
1.165 albertel 6411: &status("Killing children (INT)");
1.1 albertel 6412: local($SIG{CHLD}) = 'IGNORE'; # we're going to kill our children
6413: kill 'INT' => keys %children;
1.59 www 6414: &logthis("Free socket: ".shutdown($server,2)); # free up socket
1.1 albertel 6415: my $execdir=$perlvar{'lonDaemons'};
6416: unlink("$execdir/logs/lond.pid");
1.190 albertel 6417: &logthis("<font color='red'>CRITICAL: Shutting down</font>");
1.165 albertel 6418: &status("Done killing children");
1.1 albertel 6419: exit; # clean up with dignity
6420: }
6421:
6422: sub HUPSMAN { # signal handler for SIGHUP
6423: local($SIG{CHLD}) = 'IGNORE'; # we're going to kill our children
1.165 albertel 6424: &status("Killing children for restart (HUP)");
1.1 albertel 6425: kill 'INT' => keys %children;
1.59 www 6426: &logthis("Free socket: ".shutdown($server,2)); # free up socket
1.190 albertel 6427: &logthis("<font color='red'>CRITICAL: Restarting</font>");
1.134 albertel 6428: my $execdir=$perlvar{'lonDaemons'};
1.30 harris41 6429: unlink("$execdir/logs/lond.pid");
1.165 albertel 6430: &status("Restarting self (HUP)");
1.1 albertel 6431: exec("$execdir/lond"); # here we go again
6432: }
6433:
1.144 foxr 6434: #
1.148 foxr 6435: # Reload the Apache daemon's state.
1.150 foxr 6436: # This is done by invoking /home/httpd/perl/apachereload
6437: # a setuid perl script that can be root for us to do this job.
1.148 foxr 6438: #
6439: sub ReloadApache {
1.473 raeburn 6440: # --------------------------- Handle case of another apachereload process (locking)
1.474 raeburn 6441: if (&LONCAPA::try_to_lock('/tmp/lock_apachereload')) {
6442: my $execdir = $perlvar{'lonDaemons'};
6443: my $script = $execdir."/apachereload";
6444: system($script);
6445: unlink('/tmp/lock_apachereload'); # Remove the lock file.
6446: }
1.148 foxr 6447: }
6448:
6449: #
1.144 foxr 6450: # Called in response to a USR2 signal.
6451: # - Reread hosts.tab
6452: # - All children connected to hosts that were removed from hosts.tab
6453: # are killed via SIGINT
6454: # - All children connected to previously existing hosts are sent SIGUSR1
6455: # - Our internal hosts hash is updated to reflect the new contents of
6456: # hosts.tab causing connections from hosts added to hosts.tab to
6457: # now be honored.
6458: #
6459: sub UpdateHosts {
1.165 albertel 6460: &status("Reload hosts.tab");
1.147 foxr 6461: logthis('<font color="blue"> Updating connections </font>');
1.148 foxr 6462: #
6463: # The %children hash has the set of IP's we currently have children
6464: # on. These need to be matched against records in the hosts.tab
6465: # Any ip's no longer in the table get killed off they correspond to
6466: # either dropped or changed hosts. Note that the re-read of the table
6467: # will take care of new and changed hosts as connections come into being.
6468:
1.371 albertel 6469: &Apache::lonnet::reset_hosts_info();
1.148 foxr 6470:
1.368 albertel 6471: foreach my $child (keys(%children)) {
1.148 foxr 6472: my $childip = $children{$child};
1.374 albertel 6473: if ($childip ne '127.0.0.1'
6474: && !defined(&Apache::lonnet::get_hosts_from_ip($childip))) {
1.149 foxr 6475: logthis('<font color="blue"> UpdateHosts killing child '
6476: ." $child for ip $childip </font>");
1.148 foxr 6477: kill('INT', $child);
1.149 foxr 6478: } else {
6479: logthis('<font color="green"> keeping child for ip '
6480: ." $childip (pid=$child) </font>");
1.148 foxr 6481: }
6482: }
6483: ReloadApache;
1.165 albertel 6484: &status("Finished reloading hosts.tab");
1.144 foxr 6485: }
6486:
1.148 foxr 6487:
1.57 www 6488: sub checkchildren {
1.165 albertel 6489: &status("Checking on the children (sending signals)");
1.57 www 6490: &initnewstatus();
6491: &logstatus();
6492: &logthis('Going to check on the children');
1.134 albertel 6493: my $docdir=$perlvar{'lonDocRoot'};
1.61 harris41 6494: foreach (sort keys %children) {
1.221 albertel 6495: #sleep 1;
1.57 www 6496: unless (kill 'USR1' => $_) {
6497: &logthis ('Child '.$_.' is dead');
6498: &logstatus($$.' is dead');
1.221 albertel 6499: delete($children{$_});
1.57 www 6500: }
1.61 harris41 6501: }
1.63 www 6502: sleep 5;
1.212 foxr 6503: $SIG{ALRM} = sub { Debug("timeout");
6504: die "timeout"; };
1.113 albertel 6505: $SIG{__DIE__} = 'DEFAULT';
1.165 albertel 6506: &status("Checking on the children (waiting for reports)");
1.63 www 6507: foreach (sort keys %children) {
6508: unless (-e "$docdir/lon-status/londchld/$_.txt") {
1.113 albertel 6509: eval {
6510: alarm(300);
1.63 www 6511: &logthis('Child '.$_.' did not respond');
1.67 albertel 6512: kill 9 => $_;
1.131 albertel 6513: #$emailto="$perlvar{'lonAdmEMail'},$perlvar{'lonSysEMail'}";
6514: #$subj="LON: $currenthostid killed lond process $_";
6515: #my $result=`echo 'Killed lond process $_.' | mailto $emailto -s '$subj' > /dev/null`;
6516: #$execdir=$perlvar{'lonDaemons'};
6517: #$result=`/bin/cp $execdir/logs/lond.log $execdir/logs/lond.log.$_`;
1.221 albertel 6518: delete($children{$_});
1.113 albertel 6519: alarm(0);
6520: }
1.63 www 6521: }
6522: }
1.113 albertel 6523: $SIG{ALRM} = 'DEFAULT';
1.155 albertel 6524: $SIG{__DIE__} = \&catchexception;
1.165 albertel 6525: &status("Finished checking children");
1.221 albertel 6526: &logthis('Finished Checking children');
1.57 www 6527: }
6528:
1.1 albertel 6529: # --------------------------------------------------------------------- Logging
6530:
6531: sub logthis {
6532: my $message=shift;
6533: my $execdir=$perlvar{'lonDaemons'};
6534: my $fh=IO::File->new(">>$execdir/logs/lond.log");
6535: my $now=time;
6536: my $local=localtime($now);
1.58 www 6537: $lastlog=$local.': '.$message;
1.1 albertel 6538: print $fh "$local ($$): $message\n";
6539: }
6540:
1.77 foxr 6541: # ------------------------- Conditional log if $DEBUG true.
6542: sub Debug {
6543: my $message = shift;
6544: if($DEBUG) {
6545: &logthis($message);
6546: }
6547: }
1.161 foxr 6548:
6549: #
6550: # Sub to do replies to client.. this gives a hook for some
6551: # debug tracing too:
6552: # Parameters:
6553: # fd - File open on client.
6554: # reply - Text to send to client.
6555: # request - Original request from client.
6556: #
6557: sub Reply {
1.192 foxr 6558: my ($fd, $reply, $request) = @_;
1.387 albertel 6559: if (ref($reply)) {
6560: print $fd $$reply;
6561: print $fd "\n";
6562: if ($DEBUG) { Debug("Request was $request Reply was $$reply"); }
6563: } else {
6564: print $fd $reply;
6565: if ($DEBUG) { Debug("Request was $request Reply was $reply"); }
6566: }
1.212 foxr 6567: $Transactions++;
6568: }
6569:
6570:
6571: #
6572: # Sub to report a failure.
6573: # This function:
6574: # - Increments the failure statistic counters.
6575: # - Invokes Reply to send the error message to the client.
6576: # Parameters:
6577: # fd - File descriptor open on the client
6578: # reply - Reply text to emit.
6579: # request - The original request message (used by Reply
6580: # to debug if that's enabled.
6581: # Implicit outputs:
6582: # $Failures- The number of failures is incremented.
6583: # Reply (invoked here) sends a message to the
6584: # client:
6585: #
6586: sub Failure {
6587: my $fd = shift;
6588: my $reply = shift;
6589: my $request = shift;
6590:
6591: $Failures++;
6592: Reply($fd, $reply, $request); # That's simple eh?
1.161 foxr 6593: }
1.57 www 6594: # ------------------------------------------------------------------ Log status
6595:
6596: sub logstatus {
1.178 foxr 6597: &status("Doing logging");
6598: my $docdir=$perlvar{'lonDocRoot'};
6599: {
6600: my $fh=IO::File->new(">$docdir/lon-status/londchld/$$.txt");
1.200 matthew 6601: print $fh $status."\n".$lastlog."\n".time."\n$keymode";
1.178 foxr 6602: $fh->close();
6603: }
1.221 albertel 6604: &status("Finished $$.txt");
6605: {
6606: open(LOG,">>$docdir/lon-status/londstatus.txt");
6607: flock(LOG,LOCK_EX);
6608: print LOG $$."\t".$clientname."\t".$currenthostid."\t"
6609: .$status."\t".$lastlog."\t $keymode\n";
1.275 albertel 6610: flock(LOG,LOCK_UN);
1.221 albertel 6611: close(LOG);
6612: }
1.178 foxr 6613: &status("Finished logging");
1.57 www 6614: }
6615:
6616: sub initnewstatus {
6617: my $docdir=$perlvar{'lonDocRoot'};
6618: my $fh=IO::File->new(">$docdir/lon-status/londstatus.txt");
1.460 foxr 6619: my $now=time();
1.57 www 6620: my $local=localtime($now);
6621: print $fh "LOND status $local - parent $$\n\n";
1.64 www 6622: opendir(DIR,"$docdir/lon-status/londchld");
1.134 albertel 6623: while (my $filename=readdir(DIR)) {
1.64 www 6624: unlink("$docdir/lon-status/londchld/$filename");
6625: }
6626: closedir(DIR);
1.57 www 6627: }
6628:
6629: # -------------------------------------------------------------- Status setting
6630:
6631: sub status {
6632: my $what=shift;
6633: my $now=time;
6634: my $local=localtime($now);
1.178 foxr 6635: $status=$local.': '.$what;
6636: $0='lond: '.$what.' '.$local;
1.57 www 6637: }
1.11 www 6638:
1.13 www 6639: # -------------------------------------------------------------- Talk to lonsql
6640:
1.234 foxr 6641: sub sql_reply {
1.12 harris41 6642: my ($cmd)=@_;
1.234 foxr 6643: my $answer=&sub_sql_reply($cmd);
6644: if ($answer eq 'con_lost') { $answer=&sub_sql_reply($cmd); }
1.12 harris41 6645: return $answer;
6646: }
6647:
1.234 foxr 6648: sub sub_sql_reply {
1.12 harris41 6649: my ($cmd)=@_;
6650: my $unixsock="mysqlsock";
6651: my $peerfile="$perlvar{'lonSockDir'}/$unixsock";
6652: my $sclient=IO::Socket::UNIX->new(Peer =>"$peerfile",
6653: Type => SOCK_STREAM,
6654: Timeout => 10)
6655: or return "con_lost";
1.319 www 6656: print $sclient "$cmd:$currentdomainid\n";
1.12 harris41 6657: my $answer=<$sclient>;
6658: chomp($answer);
6659: if (!$answer) { $answer="con_lost"; }
6660: return $answer;
6661: }
6662:
1.1 albertel 6663: # --------------------------------------- Is this the home server of an author?
1.11 www 6664:
1.1 albertel 6665: sub ishome {
6666: my $author=shift;
6667: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
6668: my ($udom,$uname)=split(/\//,$author);
6669: my $proname=propath($udom,$uname);
6670: if (-e $proname) {
6671: return 'owner';
6672: } else {
6673: return 'not_owner';
6674: }
6675: }
6676:
6677: # ======================================================= Continue main program
6678: # ---------------------------------------------------- Fork once and dissociate
6679:
1.134 albertel 6680: my $fpid=fork;
1.1 albertel 6681: exit if $fpid;
1.29 harris41 6682: die "Couldn't fork: $!" unless defined ($fpid);
1.1 albertel 6683:
1.29 harris41 6684: POSIX::setsid() or die "Can't start new session: $!";
1.1 albertel 6685:
6686: # ------------------------------------------------------- Write our PID on disk
6687:
1.134 albertel 6688: my $execdir=$perlvar{'lonDaemons'};
1.1 albertel 6689: open (PIDSAVE,">$execdir/logs/lond.pid");
6690: print PIDSAVE "$$\n";
6691: close(PIDSAVE);
1.190 albertel 6692: &logthis("<font color='red'>CRITICAL: ---------- Starting ----------</font>");
1.57 www 6693: &status('Starting');
1.1 albertel 6694:
1.106 foxr 6695:
1.1 albertel 6696:
6697: # ----------------------------------------------------- Install signal handlers
6698:
1.57 www 6699:
1.1 albertel 6700: $SIG{CHLD} = \&REAPER;
6701: $SIG{INT} = $SIG{TERM} = \&HUNTSMAN;
6702: $SIG{HUP} = \&HUPSMAN;
1.57 www 6703: $SIG{USR1} = \&checkchildren;
1.144 foxr 6704: $SIG{USR2} = \&UpdateHosts;
1.106 foxr 6705:
1.148 foxr 6706: # Read the host hashes:
1.368 albertel 6707: &Apache::lonnet::load_hosts_tab();
1.447 raeburn 6708: my %iphost = &Apache::lonnet::get_iphost(1);
1.106 foxr 6709:
1.480 raeburn 6710: $dist=`$perlvar{'lonDaemons'}/distprobe`;
1.286 albertel 6711:
1.471 raeburn 6712: my $arch = `uname -i`;
1.475 raeburn 6713: chomp($arch);
1.471 raeburn 6714: if ($arch eq 'unknown') {
6715: $arch = `uname -m`;
1.475 raeburn 6716: chomp($arch);
1.471 raeburn 6717: }
6718:
1.106 foxr 6719: # --------------------------------------------------------------
6720: # Accept connections. When a connection comes in, it is validated
6721: # and if good, a child process is created to process transactions
6722: # along the connection.
6723:
1.1 albertel 6724: while (1) {
1.165 albertel 6725: &status('Starting accept');
1.106 foxr 6726: $client = $server->accept() or next;
1.165 albertel 6727: &status('Accepted '.$client.' off to spawn');
1.386 albertel 6728: make_new_child($client);
1.165 albertel 6729: &status('Finished spawning');
1.1 albertel 6730: }
6731:
1.212 foxr 6732: sub make_new_child {
6733: my $pid;
6734: # my $cipher; # Now global
6735: my $sigset;
1.178 foxr 6736:
1.212 foxr 6737: $client = shift;
6738: &status('Starting new child '.$client);
6739: &logthis('<font color="green"> Attempting to start child ('.$client.
6740: ")</font>");
6741: # block signal for fork
6742: $sigset = POSIX::SigSet->new(SIGINT);
6743: sigprocmask(SIG_BLOCK, $sigset)
6744: or die "Can't block SIGINT for fork: $!\n";
1.178 foxr 6745:
1.212 foxr 6746: die "fork: $!" unless defined ($pid = fork);
1.178 foxr 6747:
1.212 foxr 6748: $client->sockopt(SO_KEEPALIVE, 1); # Enable monitoring of
6749: # connection liveness.
1.178 foxr 6750:
1.212 foxr 6751: #
6752: # Figure out who we're talking to so we can record the peer in
6753: # the pid hash.
6754: #
6755: my $caller = getpeername($client);
6756: my ($port,$iaddr);
6757: if (defined($caller) && length($caller) > 0) {
6758: ($port,$iaddr)=unpack_sockaddr_in($caller);
6759: } else {
6760: &logthis("Unable to determine who caller was, getpeername returned nothing");
6761: }
6762: if (defined($iaddr)) {
6763: $clientip = inet_ntoa($iaddr);
6764: Debug("Connected with $clientip");
6765: } else {
6766: &logthis("Unable to determine clientip");
6767: $clientip='Unavailable';
6768: }
6769:
6770: if ($pid) {
6771: # Parent records the child's birth and returns.
6772: sigprocmask(SIG_UNBLOCK, $sigset)
6773: or die "Can't unblock SIGINT for fork: $!\n";
6774: $children{$pid} = $clientip;
6775: &status('Started child '.$pid);
1.462 foxr 6776: close($client);
1.212 foxr 6777: return;
6778: } else {
6779: # Child can *not* return from this subroutine.
6780: $SIG{INT} = 'DEFAULT'; # make SIGINT kill us as it did before
6781: $SIG{CHLD} = 'DEFAULT'; #make this default so that pwauth returns
6782: #don't get intercepted
6783: $SIG{USR1}= \&logstatus;
6784: $SIG{ALRM}= \&timeout;
1.468 foxr 6785: #
6786: # Block sigpipe as it gets thrownon socket disconnect and we want to
6787: # deal with that as a read faiure instead.
6788: #
6789: my $blockset = POSIX::SigSet->new(SIGPIPE);
6790: sigprocmask(SIG_BLOCK, $blockset);
6791:
1.212 foxr 6792: $lastlog='Forked ';
6793: $status='Forked';
1.178 foxr 6794:
1.212 foxr 6795: # unblock signals
6796: sigprocmask(SIG_UNBLOCK, $sigset)
6797: or die "Can't unblock SIGINT for fork: $!\n";
1.178 foxr 6798:
1.212 foxr 6799: # my $tmpsnum=0; # Now global
6800: #---------------------------------------------------- kerberos 5 initialization
6801: &Authen::Krb5::init_context();
1.489.2.16 raeburn 6802:
6803: my $no_ets;
1.489.2.17 raeburn 6804: if ($dist =~ /^(?:centos|rhes|scientific)(\d+)$/) {
1.489.2.16 raeburn 6805: if ($1 >= 7) {
6806: $no_ets = 1;
6807: }
6808: } elsif ($dist =~ /^suse(\d+\.\d+)$/) {
6809: if (($1 eq '9.3') || ($1 >= 12.2)) {
6810: $no_ets = 1;
6811: }
1.489.2.17 raeburn 6812: } elsif ($dist =~ /^sles(\d+)$/) {
6813: if ($1 > 11) {
6814: $no_ets = 1;
6815: }
1.489.2.16 raeburn 6816: } elsif ($dist =~ /^fedora(\d+)$/) {
6817: if ($1 < 7) {
6818: $no_ets = 1;
6819: }
6820: }
6821: unless ($no_ets) {
6822: &Authen::Krb5::init_ets();
6823: }
1.209 albertel 6824:
1.212 foxr 6825: &status('Accepted connection');
6826: # =============================================================================
6827: # do something with the connection
6828: # -----------------------------------------------------------------------------
6829: # see if we know client and 'check' for spoof IP by ineffective challenge
1.178 foxr 6830:
1.278 albertel 6831: my $outsideip=$clientip;
6832: if ($clientip eq '127.0.0.1') {
1.368 albertel 6833: $outsideip=&Apache::lonnet::get_host_ip($perlvar{'lonHostID'});
1.278 albertel 6834: }
1.412 foxr 6835: &ReadManagerTable();
1.368 albertel 6836: my $clientrec=defined(&Apache::lonnet::get_hosts_from_ip($outsideip));
1.278 albertel 6837: my $ismanager=($managers{$outsideip} ne undef);
1.432 raeburn 6838: $clientname = "[unknown]";
1.212 foxr 6839: if($clientrec) { # Establish client type.
6840: $ConnectionType = "client";
1.368 albertel 6841: $clientname = (&Apache::lonnet::get_hosts_from_ip($outsideip))[-1];
1.212 foxr 6842: if($ismanager) {
6843: $ConnectionType = "both";
6844: }
6845: } else {
6846: $ConnectionType = "manager";
1.278 albertel 6847: $clientname = $managers{$outsideip};
1.212 foxr 6848: }
6849: my $clientok;
1.178 foxr 6850:
1.212 foxr 6851: if ($clientrec || $ismanager) {
6852: &status("Waiting for init from $clientip $clientname");
6853: &logthis('<font color="yellow">INFO: Connection, '.
6854: $clientip.
6855: " ($clientname) connection type = $ConnectionType </font>" );
6856: &status("Connecting $clientip ($clientname))");
6857: my $remotereq=<$client>;
6858: chomp($remotereq);
6859: Debug("Got init: $remotereq");
1.337 albertel 6860:
1.212 foxr 6861: if ($remotereq =~ /^init/) {
6862: &sethost("sethost:$perlvar{'lonHostID'}");
6863: #
6864: # If the remote is attempting a local init... give that a try:
6865: #
1.432 raeburn 6866: (my $i, my $inittype, $clientversion) = split(/:/, $remotereq);
1.489.2.4 raeburn 6867: # For LON-CAPA 2.9, the client session will have sent its LON-CAPA
6868: # version when initiating the connection. For LON-CAPA 2.8 and older,
6869: # the version is retrieved from the global %loncaparevs in lonnet.pm.
6870: # $clientversion contains path to keyfile if $inittype eq 'local'
6871: # it's overridden below in this case
6872: $clientversion ||= $Apache::lonnet::loncaparevs{$clientname};
1.209 albertel 6873:
1.212 foxr 6874: # If the connection type is ssl, but I didn't get my
6875: # certificate files yet, then I'll drop back to
6876: # insecure (if allowed).
6877:
6878: if($inittype eq "ssl") {
6879: my ($ca, $cert) = lonssl::CertificateFile;
6880: my $kfile = lonssl::KeyFile;
6881: if((!$ca) ||
6882: (!$cert) ||
6883: (!$kfile)) {
6884: $inittype = ""; # This forces insecure attempt.
6885: &logthis("<font color=\"blue\"> Certificates not "
6886: ."installed -- trying insecure auth</font>");
1.224 foxr 6887: } else { # SSL certificates are in place so
1.212 foxr 6888: } # Leave the inittype alone.
6889: }
6890:
6891: if($inittype eq "local") {
1.432 raeburn 6892: $clientversion = $perlvar{'lonVersion'};
1.212 foxr 6893: my $key = LocalConnection($client, $remotereq);
6894: if($key) {
6895: Debug("Got local key $key");
6896: $clientok = 1;
6897: my $cipherkey = pack("H32", $key);
6898: $cipher = new IDEA($cipherkey);
6899: print $client "ok:local\n";
1.442 www 6900: &logthis('<font color="green">'
1.212 foxr 6901: . "Successful local authentication </font>");
6902: $keymode = "local"
1.178 foxr 6903: } else {
1.212 foxr 6904: Debug("Failed to get local key");
6905: $clientok = 0;
6906: shutdown($client, 3);
6907: close $client;
1.178 foxr 6908: }
1.212 foxr 6909: } elsif ($inittype eq "ssl") {
6910: my $key = SSLConnection($client);
6911: if ($key) {
6912: $clientok = 1;
6913: my $cipherkey = pack("H32", $key);
6914: $cipher = new IDEA($cipherkey);
6915: &logthis('<font color="green">'
6916: ."Successfull ssl authentication with $clientname </font>");
6917: $keymode = "ssl";
6918:
1.178 foxr 6919: } else {
1.212 foxr 6920: $clientok = 0;
6921: close $client;
1.178 foxr 6922: }
1.212 foxr 6923:
6924: } else {
6925: my $ok = InsecureConnection($client);
6926: if($ok) {
6927: $clientok = 1;
6928: &logthis('<font color="green">'
6929: ."Successful insecure authentication with $clientname </font>");
6930: print $client "ok\n";
6931: $keymode = "insecure";
1.178 foxr 6932: } else {
1.212 foxr 6933: &logthis('<font color="yellow">'
6934: ."Attempted insecure connection disallowed </font>");
6935: close $client;
6936: $clientok = 0;
1.178 foxr 6937: }
6938: }
1.212 foxr 6939: } else {
6940: &logthis(
6941: "<font color='blue'>WARNING: "
6942: ."$clientip failed to initialize: >$remotereq< </font>");
6943: &status('No init '.$clientip);
6944: }
6945: } else {
6946: &logthis(
6947: "<font color='blue'>WARNING: Unknown client $clientip</font>");
6948: &status('Hung up on '.$clientip);
6949: }
6950:
6951: if ($clientok) {
6952: # ---------------- New known client connecting, could mean machine online again
1.368 albertel 6953: if (&Apache::lonnet::get_host_ip($currenthostid) ne $clientip
1.367 albertel 6954: && $clientip ne '127.0.0.1') {
1.375 albertel 6955: &Apache::lonnet::reconlonc($clientname);
1.212 foxr 6956: }
6957: &logthis("<font color='green'>Established connection: $clientname</font>");
6958: &status('Will listen to '.$clientname);
6959: # ------------------------------------------------------------ Process requests
6960: my $keep_going = 1;
6961: my $user_input;
1.448 raeburn 6962: my $clienthost = &Apache::lonnet::hostname($clientname);
6963: my $clientserverhomeID = &Apache::lonnet::get_server_homeID($clienthost);
6964: $clienthomedom = &Apache::lonnet::host_domain($clientserverhomeID);
1.212 foxr 6965: while(($user_input = get_request) && $keep_going) {
6966: alarm(120);
6967: Debug("Main: Got $user_input\n");
6968: $keep_going = &process_request($user_input);
1.178 foxr 6969: alarm(0);
1.212 foxr 6970: &status('Listening to '.$clientname." ($keymode)");
1.161 foxr 6971: }
1.212 foxr 6972:
1.59 www 6973: # --------------------------------------------- client unknown or fishy, refuse
1.212 foxr 6974: } else {
1.161 foxr 6975: print $client "refused\n";
6976: $client->close();
1.190 albertel 6977: &logthis("<font color='blue'>WARNING: "
1.161 foxr 6978: ."Rejected client $clientip, closing connection</font>");
6979: }
1.212 foxr 6980: }
1.161 foxr 6981:
1.1 albertel 6982: # =============================================================================
1.161 foxr 6983:
1.190 albertel 6984: &logthis("<font color='red'>CRITICAL: "
1.161 foxr 6985: ."Disconnect from $clientip ($clientname)</font>");
6986:
6987:
6988: # this exit is VERY important, otherwise the child will become
6989: # a producer of more and more children, forking yourself into
6990: # process death.
6991: exit;
1.106 foxr 6992:
1.78 foxr 6993: }
1.261 foxr 6994: #
6995: # Determine if a user is an author for the indicated domain.
6996: #
6997: # Parameters:
6998: # domain - domain to check in .
6999: # user - Name of user to check.
7000: #
7001: # Return:
7002: # 1 - User is an author for domain.
7003: # 0 - User is not an author for domain.
7004: sub is_author {
7005: my ($domain, $user) = @_;
7006:
7007: &Debug("is_author: $user @ $domain");
7008:
7009: my $hashref = &tie_user_hash($domain, $user, "roles",
7010: &GDBM_READER());
7011:
7012: # Author role should show up as a key /domain/_au
1.78 foxr 7013:
1.321 albertel 7014: my $value;
1.487 foxr 7015: if ($hashref) {
1.78 foxr 7016:
1.487 foxr 7017: my $key = "/$domain/_au";
7018: if (defined($hashref)) {
7019: $value = $hashref->{$key};
7020: if(!untie_user_hash($hashref)) {
7021: return 'error: ' . ($!+0)." untie (GDBM) Failed";
7022: }
7023: }
7024:
7025: if(defined($value)) {
7026: &Debug("$user @ $domain is an author");
7027: }
7028: } else {
7029: return 'error: '.($!+0)." tie (GDBM) Failed";
1.261 foxr 7030: }
7031:
7032: return defined($value);
7033: }
1.78 foxr 7034: #
7035: # Checks to see if the input roleput request was to set
1.482 www 7036: # an author role. If so, creates construction space
1.78 foxr 7037: # Parameters:
7038: # request - The request sent to the rolesput subchunk.
7039: # We're looking for /domain/_au
7040: # domain - The domain in which the user is having roles doctored.
7041: # user - Name of the user for which the role is being put.
7042: # authtype - The authentication type associated with the user.
7043: #
1.289 albertel 7044: sub manage_permissions {
1.192 foxr 7045: my ($request, $domain, $user, $authtype) = @_;
1.78 foxr 7046: # See if the request is of the form /$domain/_au
1.289 albertel 7047: if($request =~ /^(\/\Q$domain\E\/_au)$/) { # It's an author rolesput...
1.484 raeburn 7048: my $path=$perlvar{'lonDocRoot'}."/priv/$domain";
1.482 www 7049: unless (-e $path) {
7050: mkdir($path);
7051: }
7052: unless (-e $path.'/'.$user) {
7053: mkdir($path.'/'.$user);
7054: }
1.78 foxr 7055: }
7056: }
1.222 foxr 7057:
7058:
7059: #
7060: # Return the full path of a user password file, whether it exists or not.
7061: # Parameters:
7062: # domain - Domain in which the password file lives.
7063: # user - name of the user.
7064: # Returns:
7065: # Full passwd path:
7066: #
7067: sub password_path {
7068: my ($domain, $user) = @_;
1.264 albertel 7069: return &propath($domain, $user).'/passwd';
1.222 foxr 7070: }
7071:
7072: # Password Filename
7073: # Returns the path to a passwd file given domain and user... only if
7074: # it exists.
7075: # Parameters:
7076: # domain - Domain in which to search.
7077: # user - username.
7078: # Returns:
7079: # - If the password file exists returns its path.
7080: # - If the password file does not exist, returns undefined.
7081: #
7082: sub password_filename {
7083: my ($domain, $user) = @_;
7084:
7085: Debug ("PasswordFilename called: dom = $domain user = $user");
7086:
7087: my $path = &password_path($domain, $user);
7088: Debug("PasswordFilename got path: $path");
7089: if(-e $path) {
7090: return $path;
7091: } else {
7092: return undef;
7093: }
7094: }
7095:
7096: #
7097: # Rewrite the contents of the user's passwd file.
7098: # Parameters:
7099: # domain - domain of the user.
7100: # name - User's name.
7101: # contents - New contents of the file.
1.489.2.26! raeburn 7102: # saveold - (optional). If true save old file in a passwd.bak file.
1.222 foxr 7103: # Returns:
7104: # 0 - Failed.
7105: # 1 - Success.
7106: #
7107: sub rewrite_password_file {
1.489.2.26! raeburn 7108: my ($domain, $user, $contents, $saveold) = @_;
1.222 foxr 7109:
7110: my $file = &password_filename($domain, $user);
7111: if (defined $file) {
1.489.2.26! raeburn 7112: if ($saveold) {
! 7113: my $bakfile = $file.'.bak';
! 7114: if (CopyFile($file,$bakfile)) {
! 7115: chmod(0400,$bakfile);
! 7116: &logthis("Old password saved in passwd.bak for internally authenticated user: $user:$domain");
! 7117: } else {
! 7118: &logthis("Failed to save old password in passwd.bak for internally authenticated user: $user:$domain");
! 7119: }
! 7120: }
1.222 foxr 7121: my $pf = IO::File->new(">$file");
7122: if($pf) {
7123: print $pf "$contents\n";
7124: return 1;
7125: } else {
7126: return 0;
7127: }
7128: } else {
7129: return 0;
7130: }
7131:
7132: }
7133:
1.78 foxr 7134: #
1.222 foxr 7135: # get_auth_type - Determines the authorization type of a user in a domain.
1.78 foxr 7136:
7137: # Returns the authorization type or nouser if there is no such user.
7138: #
1.436 raeburn 7139: sub get_auth_type {
1.192 foxr 7140: my ($domain, $user) = @_;
1.78 foxr 7141:
1.222 foxr 7142: Debug("get_auth_type( $domain, $user ) \n");
1.78 foxr 7143: my $proname = &propath($domain, $user);
7144: my $passwdfile = "$proname/passwd";
7145: if( -e $passwdfile ) {
7146: my $pf = IO::File->new($passwdfile);
7147: my $realpassword = <$pf>;
7148: chomp($realpassword);
1.79 foxr 7149: Debug("Password info = $realpassword\n");
1.78 foxr 7150: my ($authtype, $contentpwd) = split(/:/, $realpassword);
1.79 foxr 7151: Debug("Authtype = $authtype, content = $contentpwd\n");
1.259 raeburn 7152: return "$authtype:$contentpwd";
1.224 foxr 7153: } else {
1.79 foxr 7154: Debug("Returning nouser");
1.78 foxr 7155: return "nouser";
7156: }
1.1 albertel 7157: }
7158:
1.220 foxr 7159: #
7160: # Validate a user given their domain, name and password. This utility
7161: # function is used by both AuthenticateHandler and ChangePasswordHandler
7162: # to validate the login credentials of a user.
7163: # Parameters:
7164: # $domain - The domain being logged into (this is required due to
7165: # the capability for multihomed systems.
7166: # $user - The name of the user being validated.
7167: # $password - The user's propoposed password.
7168: #
7169: # Returns:
7170: # 1 - The domain,user,pasword triplet corresponds to a valid
7171: # user.
7172: # 0 - The domain,user,password triplet is not a valid user.
7173: #
7174: sub validate_user {
1.396 raeburn 7175: my ($domain, $user, $password, $checkdefauth) = @_;
1.220 foxr 7176:
7177: # Why negative ~pi you may well ask? Well this function is about
7178: # authentication, and therefore very important to get right.
7179: # I've initialized the flag that determines whether or not I've
7180: # validated correctly to a value it's not supposed to get.
7181: # At the end of this function. I'll ensure that it's not still that
7182: # value so we don't just wind up returning some accidental value
7183: # as a result of executing an unforseen code path that
1.249 foxr 7184: # did not set $validated. At the end of valid execution paths,
7185: # validated shoule be 1 for success or 0 for failuer.
1.220 foxr 7186:
7187: my $validated = -3.14159;
7188:
7189: # How we authenticate is determined by the type of authentication
7190: # the user has been assigned. If the authentication type is
7191: # "nouser", the user does not exist so we will return 0.
7192:
1.222 foxr 7193: my $contents = &get_auth_type($domain, $user);
1.220 foxr 7194: my ($howpwd, $contentpwd) = split(/:/, $contents);
7195:
7196: my $null = pack("C",0); # Used by kerberos auth types.
7197:
1.395 raeburn 7198: if ($howpwd eq 'nouser') {
1.396 raeburn 7199: if ($checkdefauth) {
7200: my %domdefaults = &Apache::lonnet::get_domain_defaults($domain);
7201: if ($domdefaults{'auth_def'} eq 'localauth') {
7202: $howpwd = $domdefaults{'auth_def'};
7203: $contentpwd = $domdefaults{'auth_arg_def'};
7204: } elsif ((($domdefaults{'auth_def'} eq 'krb4') ||
7205: ($domdefaults{'auth_def'} eq 'krb5')) &&
7206: ($domdefaults{'auth_arg_def'} ne '')) {
7207: $howpwd = $domdefaults{'auth_def'};
7208: $contentpwd = $domdefaults{'auth_arg_def'};
7209: }
1.395 raeburn 7210: }
1.489.2.26! raeburn 7211: }
1.220 foxr 7212: if ($howpwd ne 'nouser') {
7213: if($howpwd eq "internal") { # Encrypted is in local password file.
1.489.2.21 raeburn 7214: if (length($contentpwd) == 13) {
7215: $validated = (crypt($password,$contentpwd) eq $contentpwd);
7216: if ($validated) {
1.489.2.26! raeburn 7217: my %domdefaults = &Apache::lonnet::get_domain_defaults($domain);
! 7218: if ($domdefaults{'intauth_switch'}) {
! 7219: my $ncpass = &hash_passwd($domain,$password);
! 7220: my $saveold;
! 7221: if ($domdefaults{'intauth_switch'} == 2) {
! 7222: $saveold = 1;
! 7223: }
! 7224: if (&rewrite_password_file($domain,$user,"$howpwd:$ncpass",$saveold)) {
! 7225: &update_passwd_history($user,$domain,$howpwd,'conversion');
! 7226: &logthis("Validated password hashed with bcrypt for $user:$domain");
! 7227: }
1.489.2.21 raeburn 7228: }
7229: }
7230: } else {
1.489.2.26! raeburn 7231: $validated = &check_internal_passwd($password,$contentpwd,$domain,$user);
1.489.2.21 raeburn 7232: }
1.220 foxr 7233: }
7234: elsif ($howpwd eq "unix") { # User is a normal unix user.
7235: $contentpwd = (getpwnam($user))[1];
7236: if($contentpwd) {
7237: if($contentpwd eq 'x') { # Shadow password file...
7238: my $pwauth_path = "/usr/local/sbin/pwauth";
7239: open PWAUTH, "|$pwauth_path" or
7240: die "Cannot invoke authentication";
7241: print PWAUTH "$user\n$password\n";
7242: close PWAUTH;
7243: $validated = ! $?;
7244:
7245: } else { # Passwords in /etc/passwd.
7246: $validated = (crypt($password,
7247: $contentpwd) eq $contentpwd);
7248: }
7249: } else {
7250: $validated = 0;
7251: }
1.439 raeburn 7252: } elsif ($howpwd eq "krb4") { # user is in kerberos 4 auth. domain.
7253: my $checkwithkrb5 = 0;
7254: if ($dist =~/^fedora(\d+)$/) {
7255: if ($1 > 11) {
7256: $checkwithkrb5 = 1;
7257: }
7258: } elsif ($dist =~ /^suse([\d.]+)$/) {
7259: if ($1 > 11.1) {
7260: $checkwithkrb5 = 1;
7261: }
7262: }
7263: if ($checkwithkrb5) {
7264: $validated = &krb5_authen($password,$null,$user,$contentpwd);
7265: } else {
7266: $validated = &krb4_authen($password,$null,$user,$contentpwd);
7267: }
1.224 foxr 7268: } elsif ($howpwd eq "krb5") { # User is in kerberos 5 auth. domain.
1.439 raeburn 7269: $validated = &krb5_authen($password,$null,$user,$contentpwd);
1.224 foxr 7270: } elsif ($howpwd eq "localauth") {
1.220 foxr 7271: # Authenticate via installation specific authentcation method:
7272: $validated = &localauth::localauth($user,
7273: $password,
1.353 albertel 7274: $contentpwd,
7275: $domain);
1.358 albertel 7276: if ($validated < 0) {
1.357 albertel 7277: &logthis("localauth for $contentpwd $user:$domain returned a $validated");
7278: $validated = 0;
7279: }
1.224 foxr 7280: } else { # Unrecognized auth is also bad.
1.220 foxr 7281: $validated = 0;
7282: }
7283: } else {
7284: $validated = 0;
7285: }
7286: #
7287: # $validated has the correct stat of the authentication:
7288: #
7289:
7290: unless ($validated != -3.14159) {
1.249 foxr 7291: # I >really really< want to know if this happens.
7292: # since it indicates that user authentication is badly
7293: # broken in some code path.
7294: #
7295: die "ValidateUser - failed to set the value of validated $domain, $user $password";
1.220 foxr 7296: }
7297: return $validated;
7298: }
7299:
1.489.2.21 raeburn 7300: sub check_internal_passwd {
1.489.2.26! raeburn 7301: my ($plainpass,$stored,$domain,$user) = @_;
1.489.2.21 raeburn 7302: my (undef,$method,@rest) = split(/!/,$stored);
1.489.2.26! raeburn 7303: if ($method eq 'bcrypt') {
1.489.2.21 raeburn 7304: my $result = &hash_passwd($domain,$plainpass,@rest);
7305: if ($result ne $stored) {
7306: return 0;
7307: }
1.489.2.26! raeburn 7308: my %domdefaults = &Apache::lonnet::get_domain_defaults($domain);
! 7309: if ($domdefaults{'intauth_check'}) {
! 7310: # Upgrade to a larger number of rounds if necessary
! 7311: my $defaultcost = $domdefaults{'intauth_cost'};
! 7312: if (($defaultcost eq '') || ($defaultcost =~ /D/)) {
! 7313: $defaultcost = 10;
! 7314: }
! 7315: if (int($rest[0])<int($defaultcost)) {
! 7316: if ($domdefaults{'intauth_check'} == 1) {
! 7317: my $ncpass = &hash_passwd($domain,$plainpass);
! 7318: if (&rewrite_password_file($domain,$user,"internal:$ncpass")) {
! 7319: &update_passwd_history($user,$domain,'internal','update cost');
! 7320: &logthis("Validated password hashed with bcrypt for $user:$domain");
! 7321: }
! 7322: return 1;
! 7323: } elsif ($domdefaults{'intauth_check'} == 2) {
! 7324: return 0;
! 7325: }
! 7326: }
! 7327: } else {
! 7328: return 1;
1.489.2.21 raeburn 7329: }
7330: }
7331: return 0;
7332: }
7333:
7334: sub get_last_authchg {
7335: my ($domain,$user) = @_;
7336: my $lastmod;
7337: my $logname = &propath($domain,$user).'/passwd.log';
7338: if (-e "$logname") {
7339: $lastmod = (stat("$logname"))[9];
7340: }
7341: return $lastmod;
7342: }
7343:
1.439 raeburn 7344: sub krb4_authen {
7345: my ($password,$null,$user,$contentpwd) = @_;
7346: my $validated = 0;
7347: if (!($password =~ /$null/) ) { # Null password not allowed.
7348: eval {
7349: require Authen::Krb4;
7350: };
7351: if (!$@) {
7352: my $k4error = &Authen::Krb4::get_pw_in_tkt($user,
7353: "",
7354: $contentpwd,,
7355: 'krbtgt',
7356: $contentpwd,
7357: 1,
7358: $password);
7359: if(!$k4error) {
7360: $validated = 1;
7361: } else {
7362: $validated = 0;
7363: &logthis('krb4: '.$user.', '.$contentpwd.', '.
7364: &Authen::Krb4::get_err_txt($Authen::Krb4::error));
7365: }
7366: } else {
7367: $validated = krb5_authen($password,$null,$user,$contentpwd);
7368: }
7369: }
7370: return $validated;
7371: }
7372:
7373: sub krb5_authen {
7374: my ($password,$null,$user,$contentpwd) = @_;
7375: my $validated = 0;
7376: if(!($password =~ /$null/)) { # Null password not allowed.
7377: my $krbclient = &Authen::Krb5::parse_name($user.'@'
7378: .$contentpwd);
7379: my $krbservice = "krbtgt/".$contentpwd."\@".$contentpwd;
7380: my $krbserver = &Authen::Krb5::parse_name($krbservice);
7381: my $credentials= &Authen::Krb5::cc_default();
7382: $credentials->initialize(&Authen::Krb5::parse_name($user.'@'
7383: .$contentpwd));
7384: my $krbreturn;
7385: if (exists(&Authen::Krb5::get_init_creds_password)) {
7386: $krbreturn =
7387: &Authen::Krb5::get_init_creds_password($krbclient,$password,
7388: $krbservice);
7389: $validated = (ref($krbreturn) eq 'Authen::Krb5::Creds');
7390: } else {
7391: $krbreturn =
7392: &Authen::Krb5::get_in_tkt_with_password($krbclient,$krbserver,
7393: $password,$credentials);
7394: $validated = ($krbreturn == 1);
7395: }
7396: if (!$validated) {
7397: &logthis('krb5: '.$user.', '.$contentpwd.', '.
7398: &Authen::Krb5::error());
7399: }
7400: }
7401: return $validated;
7402: }
1.220 foxr 7403:
1.84 albertel 7404: sub addline {
7405: my ($fname,$hostid,$ip,$newline)=@_;
7406: my $contents;
7407: my $found=0;
1.355 albertel 7408: my $expr='^'.quotemeta($hostid).':'.quotemeta($ip).':';
1.134 albertel 7409: my $sh;
1.84 albertel 7410: if ($sh=IO::File->new("$fname.subscription")) {
7411: while (my $subline=<$sh>) {
7412: if ($subline !~ /$expr/) {$contents.= $subline;} else {$found=1;}
7413: }
7414: $sh->close();
7415: }
7416: $sh=IO::File->new(">$fname.subscription");
7417: if ($contents) { print $sh $contents; }
7418: if ($newline) { print $sh $newline; }
7419: $sh->close();
7420: return $found;
1.86 www 7421: }
7422:
1.234 foxr 7423: sub get_chat {
1.324 raeburn 7424: my ($cdom,$cname,$udom,$uname,$group)=@_;
1.310 albertel 7425:
1.87 www 7426: my @entries=();
1.324 raeburn 7427: my $namespace = 'nohist_chatroom';
7428: my $namespace_inroom = 'nohist_inchatroom';
1.335 albertel 7429: if ($group ne '') {
1.324 raeburn 7430: $namespace .= '_'.$group;
7431: $namespace_inroom .= '_'.$group;
7432: }
7433: my $hashref = &tie_user_hash($cdom, $cname, $namespace,
1.310 albertel 7434: &GDBM_READER());
7435: if ($hashref) {
7436: @entries=map { $_.':'.$hashref->{$_} } sort(keys(%$hashref));
1.311 albertel 7437: &untie_user_hash($hashref);
1.123 www 7438: }
1.124 www 7439: my @participants=();
1.134 albertel 7440: my $cutoff=time-60;
1.324 raeburn 7441: $hashref = &tie_user_hash($cdom, $cname, $namespace_inroom,
1.310 albertel 7442: &GDBM_WRCREAT());
7443: if ($hashref) {
7444: $hashref->{$uname.':'.$udom}=time;
7445: foreach my $user (sort(keys(%$hashref))) {
7446: if ($hashref->{$user}>$cutoff) {
7447: push(@participants, 'active_participant:'.$user);
1.123 www 7448: }
7449: }
1.311 albertel 7450: &untie_user_hash($hashref);
1.86 www 7451: }
1.124 www 7452: return (@participants,@entries);
1.86 www 7453: }
7454:
1.234 foxr 7455: sub chat_add {
1.324 raeburn 7456: my ($cdom,$cname,$newchat,$group)=@_;
1.88 albertel 7457: my @entries=();
1.142 www 7458: my $time=time;
1.324 raeburn 7459: my $namespace = 'nohist_chatroom';
7460: my $logfile = 'chatroom.log';
1.335 albertel 7461: if ($group ne '') {
1.324 raeburn 7462: $namespace .= '_'.$group;
7463: $logfile = 'chatroom_'.$group.'.log';
7464: }
7465: my $hashref = &tie_user_hash($cdom, $cname, $namespace,
1.310 albertel 7466: &GDBM_WRCREAT());
7467: if ($hashref) {
7468: @entries=map { $_.':'.$hashref->{$_} } sort(keys(%$hashref));
1.88 albertel 7469: my ($lastid)=($entries[$#entries]=~/^(\w+)\:/);
7470: my ($thentime,$idnum)=split(/\_/,$lastid);
7471: my $newid=$time.'_000000';
7472: if ($thentime==$time) {
7473: $idnum=~s/^0+//;
7474: $idnum++;
7475: $idnum=substr('000000'.$idnum,-6,6);
7476: $newid=$time.'_'.$idnum;
7477: }
1.310 albertel 7478: $hashref->{$newid}=$newchat;
1.88 albertel 7479: my $expired=$time-3600;
1.310 albertel 7480: foreach my $comment (keys(%$hashref)) {
7481: my ($thistime) = ($comment=~/(\d+)\_/);
1.88 albertel 7482: if ($thistime<$expired) {
1.310 albertel 7483: delete $hashref->{$comment};
1.88 albertel 7484: }
7485: }
1.310 albertel 7486: {
7487: my $proname=&propath($cdom,$cname);
1.324 raeburn 7488: if (open(CHATLOG,">>$proname/$logfile")) {
1.310 albertel 7489: print CHATLOG ("$time:".&unescape($newchat)."\n");
7490: }
7491: close(CHATLOG);
1.142 www 7492: }
1.311 albertel 7493: &untie_user_hash($hashref);
1.86 www 7494: }
1.84 albertel 7495: }
7496:
7497: sub unsub {
7498: my ($fname,$clientip)=@_;
7499: my $result;
1.188 foxr 7500: my $unsubs = 0; # Number of successful unsubscribes:
7501:
7502:
7503: # An old way subscriptions were handled was to have a
7504: # subscription marker file:
7505:
7506: Debug("Attempting unlink of $fname.$clientname");
1.161 foxr 7507: if (unlink("$fname.$clientname")) {
1.188 foxr 7508: $unsubs++; # Successful unsub via marker file.
7509: }
7510:
7511: # The more modern way to do it is to have a subscription list
7512: # file:
7513:
1.84 albertel 7514: if (-e "$fname.subscription") {
1.161 foxr 7515: my $found=&addline($fname,$clientname,$clientip,'');
1.188 foxr 7516: if ($found) {
7517: $unsubs++;
7518: }
7519: }
7520:
7521: # If either or both of these mechanisms succeeded in unsubscribing a
7522: # resource we can return ok:
7523:
7524: if($unsubs) {
7525: $result = "ok\n";
1.84 albertel 7526: } else {
1.188 foxr 7527: $result = "not_subscribed\n";
1.84 albertel 7528: }
1.188 foxr 7529:
1.84 albertel 7530: return $result;
7531: }
7532:
1.101 www 7533: sub currentversion {
7534: my $fname=shift;
7535: my $version=-1;
7536: my $ulsdir='';
7537: if ($fname=~/^(.+)\/[^\/]+$/) {
7538: $ulsdir=$1;
7539: }
1.114 albertel 7540: my ($fnamere1,$fnamere2);
7541: # remove version if already specified
1.101 www 7542: $fname=~s/\.\d+\.(\w+(?:\.meta)*)$/\.$1/;
1.114 albertel 7543: # get the bits that go before and after the version number
7544: if ( $fname=~/^(.*\.)(\w+(?:\.meta)*)$/ ) {
7545: $fnamere1=$1;
7546: $fnamere2='.'.$2;
7547: }
1.101 www 7548: if (-e $fname) { $version=1; }
7549: if (-e $ulsdir) {
1.134 albertel 7550: if(-d $ulsdir) {
7551: if (opendir(LSDIR,$ulsdir)) {
7552: my $ulsfn;
7553: while ($ulsfn=readdir(LSDIR)) {
1.101 www 7554: # see if this is a regular file (ignore links produced earlier)
1.134 albertel 7555: my $thisfile=$ulsdir.'/'.$ulsfn;
7556: unless (-l $thisfile) {
1.160 www 7557: if ($thisfile=~/\Q$fnamere1\E(\d+)\Q$fnamere2\E$/) {
1.134 albertel 7558: if ($1>$version) { $version=$1; }
7559: }
7560: }
7561: }
7562: closedir(LSDIR);
7563: $version++;
7564: }
7565: }
7566: }
7567: return $version;
1.101 www 7568: }
7569:
7570: sub thisversion {
7571: my $fname=shift;
7572: my $version=-1;
7573: if ($fname=~/\.(\d+)\.\w+(?:\.meta)*$/) {
7574: $version=$1;
7575: }
7576: return $version;
7577: }
7578:
1.84 albertel 7579: sub subscribe {
7580: my ($userinput,$clientip)=@_;
7581: my $result;
1.293 albertel 7582: my ($cmd,$fname)=split(/:/,$userinput,2);
1.84 albertel 7583: my $ownership=&ishome($fname);
7584: if ($ownership eq 'owner') {
1.101 www 7585: # explitly asking for the current version?
7586: unless (-e $fname) {
7587: my $currentversion=¤tversion($fname);
7588: if (&thisversion($fname)==$currentversion) {
7589: if ($fname=~/^(.+)\.\d+\.(\w+(?:\.meta)*)$/) {
7590: my $root=$1;
7591: my $extension=$2;
7592: symlink($root.'.'.$extension,
7593: $root.'.'.$currentversion.'.'.$extension);
1.102 www 7594: unless ($extension=~/\.meta$/) {
7595: symlink($root.'.'.$extension.'.meta',
7596: $root.'.'.$currentversion.'.'.$extension.'.meta');
7597: }
1.101 www 7598: }
7599: }
7600: }
1.84 albertel 7601: if (-e $fname) {
7602: if (-d $fname) {
7603: $result="directory\n";
7604: } else {
1.161 foxr 7605: if (-e "$fname.$clientname") {&unsub($fname,$clientip);}
1.134 albertel 7606: my $now=time;
1.161 foxr 7607: my $found=&addline($fname,$clientname,$clientip,
7608: "$clientname:$clientip:$now\n");
1.84 albertel 7609: if ($found) { $result="$fname\n"; }
7610: # if they were subscribed to only meta data, delete that
7611: # subscription, when you subscribe to a file you also get
7612: # the metadata
7613: unless ($fname=~/\.meta$/) { &unsub("$fname.meta",$clientip); }
7614: $fname=~s/\/home\/httpd\/html\/res/raw/;
1.476 raeburn 7615: my $protocol = $Apache::lonnet::protocol{$perlvar{'lonHostID'}};
7616: $protocol = 'http' if ($protocol ne 'https');
7617: $fname=$protocol.'://'.&Apache::lonnet::hostname($perlvar{'lonHostID'})."/".$fname;
1.84 albertel 7618: $result="$fname\n";
7619: }
7620: } else {
7621: $result="not_found\n";
7622: }
7623: } else {
7624: $result="rejected\n";
7625: }
7626: return $result;
7627: }
1.287 foxr 7628: # Change the passwd of a unix user. The caller must have
7629: # first verified that the user is a loncapa user.
7630: #
7631: # Parameters:
7632: # user - Unix user name to change.
7633: # pass - New password for the user.
7634: # Returns:
7635: # ok - if success
7636: # other - Some meaningfule error message string.
7637: # NOTE:
7638: # invokes a setuid script to change the passwd.
7639: sub change_unix_password {
7640: my ($user, $pass) = @_;
7641:
7642: &Debug("change_unix_password");
7643: my $execdir=$perlvar{'lonDaemons'};
7644: &Debug("Opening lcpasswd pipeline");
7645: my $pf = IO::File->new("|$execdir/lcpasswd > "
7646: ."$perlvar{'lonDaemons'}"
7647: ."/logs/lcpasswd.log");
7648: print $pf "$user\n$pass\n$pass\n";
7649: close $pf;
7650: my $err = $?;
7651: return ($err < @passwderrors) ? $passwderrors[$err] :
7652: "pwchange_falure - unknown error";
7653:
7654:
7655: }
7656:
1.91 albertel 7657:
7658: sub make_passwd_file {
1.489.2.21 raeburn 7659: my ($uname,$udom,$umode,$npass,$passfilename,$action)=@_;
1.390 raeburn 7660: my $result="ok";
1.91 albertel 7661: if ($umode eq 'krb4' or $umode eq 'krb5') {
7662: {
7663: my $pf = IO::File->new(">$passfilename");
1.261 foxr 7664: if ($pf) {
7665: print $pf "$umode:$npass\n";
1.489.2.21 raeburn 7666: &update_passwd_history($uname,$udom,$umode,$action);
1.261 foxr 7667: } else {
7668: $result = "pass_file_failed_error";
7669: }
1.91 albertel 7670: }
7671: } elsif ($umode eq 'internal') {
1.489.2.21 raeburn 7672: my $ncpass = &hash_passwd($udom,$npass);
1.91 albertel 7673: {
7674: &Debug("Creating internal auth");
7675: my $pf = IO::File->new(">$passfilename");
1.261 foxr 7676: if($pf) {
7677: print $pf "internal:$ncpass\n";
1.489.2.21 raeburn 7678: &update_passwd_history($uname,$udom,$umode,$action);
1.261 foxr 7679: } else {
7680: $result = "pass_file_failed_error";
7681: }
1.91 albertel 7682: }
7683: } elsif ($umode eq 'localauth') {
7684: {
7685: my $pf = IO::File->new(">$passfilename");
1.261 foxr 7686: if($pf) {
7687: print $pf "localauth:$npass\n";
1.489.2.21 raeburn 7688: &update_passwd_history($uname,$udom,$umode,$action);
1.261 foxr 7689: } else {
7690: $result = "pass_file_failed_error";
7691: }
1.91 albertel 7692: }
7693: } elsif ($umode eq 'unix') {
1.489.2.8 raeburn 7694: &logthis(">>>Attempt to create unix account blocked -- unix auth not available for new users.");
7695: $result="no_new_unix_accounts";
1.91 albertel 7696: } elsif ($umode eq 'none') {
7697: {
1.223 foxr 7698: my $pf = IO::File->new("> $passfilename");
1.261 foxr 7699: if($pf) {
7700: print $pf "none:\n";
7701: } else {
7702: $result = "pass_file_failed_error";
7703: }
1.91 albertel 7704: }
7705: } else {
1.390 raeburn 7706: $result="auth_mode_error";
1.91 albertel 7707: }
7708: return $result;
1.121 albertel 7709: }
7710:
1.265 albertel 7711: sub convert_photo {
7712: my ($start,$dest)=@_;
7713: system("convert $start $dest");
7714: }
7715:
1.121 albertel 7716: sub sethost {
7717: my ($remotereq) = @_;
7718: my (undef,$hostid)=split(/:/,$remotereq);
1.322 albertel 7719: # ignore sethost if we are already correct
7720: if ($hostid eq $currenthostid) {
7721: return 'ok';
7722: }
7723:
1.121 albertel 7724: if (!defined($hostid)) { $hostid=$perlvar{'lonHostID'}; }
1.368 albertel 7725: if (&Apache::lonnet::get_host_ip($perlvar{'lonHostID'})
7726: eq &Apache::lonnet::get_host_ip($hostid)) {
1.200 matthew 7727: $currenthostid =$hostid;
1.369 albertel 7728: $currentdomainid=&Apache::lonnet::host_domain($hostid);
1.443 www 7729: # &logthis("Setting hostid to $hostid, and domain to $currentdomainid");
1.121 albertel 7730: } else {
7731: &logthis("Requested host id $hostid not an alias of ".
7732: $perlvar{'lonHostID'}." refusing connection");
7733: return 'unable_to_set';
7734: }
7735: return 'ok';
7736: }
7737:
7738: sub version {
7739: my ($userinput)=@_;
7740: $remoteVERSION=(split(/:/,$userinput))[1];
7741: return "version:$VERSION";
1.127 albertel 7742: }
1.178 foxr 7743:
1.447 raeburn 7744: sub get_usersession_config {
7745: my ($dom,$name) = @_;
7746: my ($usersessionconf,$cached)=&Apache::lonnet::is_cached_new($name,$dom);
7747: if (defined($cached)) {
7748: return $usersessionconf;
7749: } else {
7750: my %domconfig = &Apache::lonnet::get_dom('configuration',['usersessions'],$dom);
7751: if (ref($domconfig{'usersessions'}) eq 'HASH') {
7752: &Apache::lonnet::do_cache_new($name,$dom,$domconfig{'usersessions'},3600);
7753: return $domconfig{'usersessions'};
7754: }
7755: }
7756: return;
7757: }
1.200 matthew 7758:
1.450 raeburn 7759:
1.471 raeburn 7760: sub distro_and_arch {
7761: return $dist.':'.$arch;
7762: }
7763:
1.61 harris41 7764: # ----------------------------------- POD (plain old documentation, CPAN style)
7765:
7766: =head1 NAME
7767:
7768: lond - "LON Daemon" Server (port "LOND" 5663)
7769:
7770: =head1 SYNOPSIS
7771:
1.74 harris41 7772: Usage: B<lond>
7773:
7774: Should only be run as user=www. This is a command-line script which
7775: is invoked by B<loncron>. There is no expectation that a typical user
7776: will manually start B<lond> from the command-line. (In other words,
7777: DO NOT START B<lond> YOURSELF.)
1.61 harris41 7778:
7779: =head1 DESCRIPTION
7780:
1.74 harris41 7781: There are two characteristics associated with the running of B<lond>,
7782: PROCESS MANAGEMENT (starting, stopping, handling child processes)
7783: and SERVER-SIDE ACTIVITIES (password authentication, user creation,
7784: subscriptions, etc). These are described in two large
7785: sections below.
7786:
7787: B<PROCESS MANAGEMENT>
7788:
1.61 harris41 7789: Preforker - server who forks first. Runs as a daemon. HUPs.
7790: Uses IDEA encryption
7791:
1.74 harris41 7792: B<lond> forks off children processes that correspond to the other servers
7793: in the network. Management of these processes can be done at the
7794: parent process level or the child process level.
7795:
7796: B<logs/lond.log> is the location of log messages.
7797:
7798: The process management is now explained in terms of linux shell commands,
7799: subroutines internal to this code, and signal assignments:
7800:
7801: =over 4
7802:
7803: =item *
7804:
7805: PID is stored in B<logs/lond.pid>
7806:
7807: This is the process id number of the parent B<lond> process.
7808:
7809: =item *
7810:
7811: SIGTERM and SIGINT
7812:
7813: Parent signal assignment:
7814: $SIG{INT} = $SIG{TERM} = \&HUNTSMAN;
7815:
7816: Child signal assignment:
7817: $SIG{INT} = 'DEFAULT'; (and SIGTERM is DEFAULT also)
7818: (The child dies and a SIGALRM is sent to parent, awaking parent from slumber
7819: to restart a new child.)
7820:
7821: Command-line invocations:
7822: B<kill> B<-s> SIGTERM I<PID>
7823: B<kill> B<-s> SIGINT I<PID>
7824:
7825: Subroutine B<HUNTSMAN>:
7826: This is only invoked for the B<lond> parent I<PID>.
7827: This kills all the children, and then the parent.
7828: The B<lonc.pid> file is cleared.
7829:
7830: =item *
7831:
7832: SIGHUP
7833:
7834: Current bug:
7835: This signal can only be processed the first time
7836: on the parent process. Subsequent SIGHUP signals
7837: have no effect.
7838:
7839: Parent signal assignment:
7840: $SIG{HUP} = \&HUPSMAN;
7841:
7842: Child signal assignment:
7843: none (nothing happens)
7844:
7845: Command-line invocations:
7846: B<kill> B<-s> SIGHUP I<PID>
7847:
7848: Subroutine B<HUPSMAN>:
7849: This is only invoked for the B<lond> parent I<PID>,
7850: This kills all the children, and then the parent.
7851: The B<lond.pid> file is cleared.
7852:
7853: =item *
7854:
7855: SIGUSR1
7856:
7857: Parent signal assignment:
7858: $SIG{USR1} = \&USRMAN;
7859:
7860: Child signal assignment:
7861: $SIG{USR1}= \&logstatus;
7862:
7863: Command-line invocations:
7864: B<kill> B<-s> SIGUSR1 I<PID>
7865:
7866: Subroutine B<USRMAN>:
7867: When invoked for the B<lond> parent I<PID>,
7868: SIGUSR1 is sent to all the children, and the status of
7869: each connection is logged.
1.144 foxr 7870:
7871: =item *
7872:
7873: SIGUSR2
7874:
7875: Parent Signal assignment:
7876: $SIG{USR2} = \&UpdateHosts
7877:
7878: Child signal assignment:
7879: NONE
7880:
1.74 harris41 7881:
7882: =item *
7883:
7884: SIGCHLD
7885:
7886: Parent signal assignment:
7887: $SIG{CHLD} = \&REAPER;
7888:
7889: Child signal assignment:
7890: none
7891:
7892: Command-line invocations:
7893: B<kill> B<-s> SIGCHLD I<PID>
7894:
7895: Subroutine B<REAPER>:
7896: This is only invoked for the B<lond> parent I<PID>.
7897: Information pertaining to the child is removed.
7898: The socket port is cleaned up.
7899:
7900: =back
7901:
7902: B<SERVER-SIDE ACTIVITIES>
7903:
7904: Server-side information can be accepted in an encrypted or non-encrypted
7905: method.
7906:
7907: =over 4
7908:
7909: =item ping
7910:
7911: Query a client in the hosts.tab table; "Are you there?"
7912:
7913: =item pong
7914:
7915: Respond to a ping query.
7916:
7917: =item ekey
7918:
7919: Read in encrypted key, make cipher. Respond with a buildkey.
7920:
7921: =item load
7922:
7923: Respond with CPU load based on a computation upon /proc/loadavg.
7924:
7925: =item currentauth
7926:
7927: Reply with current authentication information (only over an
7928: encrypted channel).
7929:
7930: =item auth
7931:
7932: Only over an encrypted channel, reply as to whether a user's
7933: authentication information can be validated.
7934:
7935: =item passwd
7936:
7937: Allow for a password to be set.
7938:
7939: =item makeuser
7940:
7941: Make a user.
7942:
7943: =item passwd
7944:
7945: Allow for authentication mechanism and password to be changed.
7946:
7947: =item home
1.61 harris41 7948:
1.74 harris41 7949: Respond to a question "are you the home for a given user?"
7950:
7951: =item update
7952:
7953: Update contents of a subscribed resource.
7954:
7955: =item unsubscribe
7956:
7957: The server is unsubscribing from a resource.
7958:
7959: =item subscribe
7960:
7961: The server is subscribing to a resource.
7962:
7963: =item log
7964:
7965: Place in B<logs/lond.log>
7966:
7967: =item put
7968:
7969: stores hash in namespace
7970:
1.489.2.2 raeburn 7971: =item rolesput
1.74 harris41 7972:
7973: put a role into a user's environment
7974:
7975: =item get
7976:
7977: returns hash with keys from array
7978: reference filled in from namespace
7979:
7980: =item eget
7981:
7982: returns hash with keys from array
7983: reference filled in from namesp (encrypts the return communication)
7984:
7985: =item rolesget
7986:
7987: get a role from a user's environment
7988:
7989: =item del
7990:
7991: deletes keys out of array from namespace
7992:
7993: =item keys
7994:
7995: returns namespace keys
7996:
7997: =item dump
7998:
7999: dumps the complete (or key matching regexp) namespace into a hash
8000:
8001: =item store
8002:
8003: stores hash permanently
8004: for this url; hashref needs to be given and should be a \%hashname; the
8005: remaining args aren't required and if they aren't passed or are '' they will
8006: be derived from the ENV
8007:
8008: =item restore
8009:
8010: returns a hash for a given url
8011:
8012: =item querysend
8013:
8014: Tells client about the lonsql process that has been launched in response
8015: to a sent query.
8016:
8017: =item queryreply
8018:
8019: Accept information from lonsql and make appropriate storage in temporary
8020: file space.
8021:
8022: =item idput
8023:
8024: Defines usernames as corresponding to IDs. (These "IDs" are unique identifiers
8025: for each student, defined perhaps by the institutional Registrar.)
8026:
8027: =item idget
8028:
8029: Returns usernames corresponding to IDs. (These "IDs" are unique identifiers
8030: for each student, defined perhaps by the institutional Registrar.)
8031:
8032: =item tmpput
8033:
8034: Accept and store information in temporary space.
8035:
8036: =item tmpget
8037:
8038: Send along temporarily stored information.
8039:
8040: =item ls
8041:
8042: List part of a user's directory.
8043:
1.135 foxr 8044: =item pushtable
8045:
8046: Pushes a file in /home/httpd/lonTab directory. Currently limited to:
8047: hosts.tab and domain.tab. The old file is copied to *.tab.backup but
8048: must be restored manually in case of a problem with the new table file.
8049: pushtable requires that the request be encrypted and validated via
8050: ValidateManager. The form of the command is:
8051: enc:pushtable tablename <tablecontents> \n
8052: where pushtable, tablename and <tablecontents> will be encrypted, but \n is a
8053: cleartext newline.
8054:
1.74 harris41 8055: =item Hanging up (exit or init)
8056:
8057: What to do when a client tells the server that they (the client)
8058: are leaving the network.
8059:
8060: =item unknown command
8061:
8062: If B<lond> is sent an unknown command (not in the list above),
8063: it replys to the client "unknown_cmd".
1.135 foxr 8064:
1.74 harris41 8065:
8066: =item UNKNOWN CLIENT
8067:
8068: If the anti-spoofing algorithm cannot verify the client,
8069: the client is rejected (with a "refused" message sent
8070: to the client, and the connection is closed.
8071:
8072: =back
1.61 harris41 8073:
8074: =head1 PREREQUISITES
8075:
8076: IO::Socket
8077: IO::File
8078: Apache::File
8079: POSIX
8080: Crypt::IDEA
8081: LWP::UserAgent()
8082: GDBM_File
8083: Authen::Krb4
1.91 albertel 8084: Authen::Krb5
1.61 harris41 8085:
8086: =head1 COREQUISITES
8087:
8088: =head1 OSNAMES
8089:
8090: linux
8091:
8092: =head1 SCRIPT CATEGORIES
8093:
8094: Server/Process
8095:
8096: =cut
1.409 foxr 8097:
8098:
8099: =pod
8100:
8101: =head1 LOG MESSAGES
8102:
8103: The messages below can be emitted in the lond log. This log is located
8104: in ~httpd/perl/logs/lond.log Many log messages have HTML encapsulation
8105: to provide coloring if examined from inside a web page. Some do not.
8106: Where color is used, the colors are; Red for sometihhng to get excited
8107: about and to follow up on. Yellow for something to keep an eye on to
8108: be sure it does not get worse, Green,and Blue for informational items.
8109:
8110: In the discussions below, sometimes reference is made to ~httpd
8111: when describing file locations. There isn't really an httpd
8112: user, however there is an httpd directory that gets installed in the
8113: place that user home directories go. On linux, this is usually
8114: (always?) /home/httpd.
8115:
8116:
8117: Some messages are colorless. These are usually (not always)
8118: Green/Blue color level messages.
8119:
8120: =over 2
8121:
8122: =item (Red) LocalConnection rejecting non local: <ip> ne 127.0.0.1
8123:
8124: A local connection negotiation was attempted by
8125: a host whose IP address was not 127.0.0.1.
8126: The socket is closed and the child will exit.
8127: lond has three ways to establish an encyrption
8128: key with a client:
8129:
8130: =over 2
8131:
8132: =item local
8133:
8134: The key is written and read from a file.
8135: This is only valid for connections from localhost.
8136:
8137: =item insecure
8138:
8139: The key is generated by the server and
8140: transmitted to the client.
8141:
8142: =item ssl (secure)
8143:
8144: An ssl connection is negotiated with the client,
8145: the key is generated by the server and sent to the
8146: client across this ssl connection before the
8147: ssl connectionis terminated and clear text
8148: transmission resumes.
8149:
8150: =back
8151:
8152: =item (Red) LocalConnection: caller is insane! init = <init> and type = <type>
8153:
8154: The client is local but has not sent an initialization
8155: string that is the literal "init:local" The connection
8156: is closed and the child exits.
8157:
8158: =item Red CRITICAL Can't get key file <error>
8159:
8160: SSL key negotiation is being attempted but the call to
8161: lonssl::KeyFile failed. This usually means that the
8162: configuration file is not correctly defining or protecting
8163: the directories/files lonCertificateDirectory or
8164: lonnetPrivateKey
8165: <error> is a string that describes the reason that
8166: the key file could not be located.
8167:
8168: =item (Red) CRITICAL Can't get certificates <error>
8169:
8170: SSL key negotiation failed because we were not able to retrives our certificate
8171: or the CA's certificate in the call to lonssl::CertificateFile
8172: <error> is the textual reason this failed. Usual reasons:
8173:
8174: =over 2
8175:
8176: =item Apache config file for loncapa incorrect:
8177:
8178: one of the variables
8179: lonCertificateDirectory, lonnetCertificateAuthority, or lonnetCertificate
8180: undefined or incorrect
8181:
8182: =item Permission error:
8183:
8184: The directory pointed to by lonCertificateDirectory is not readable by lond
8185:
8186: =item Permission error:
8187:
8188: Files in the directory pointed to by lonCertificateDirectory are not readable by lond.
8189:
8190: =item Installation error:
8191:
8192: Either the certificate authority file or the certificate have not
8193: been installed in lonCertificateDirectory.
8194:
8195: =item (Red) CRITICAL SSL Socket promotion failed: <err>
8196:
8197: The promotion of the connection from plaintext to SSL failed
8198: <err> is the reason for the failure. There are two
8199: system calls involved in the promotion (one of which failed),
8200: a dup to produce
8201: a second fd on the raw socket over which the encrypted data
8202: will flow and IO::SOcket::SSL->new_from_fd which creates
8203: the SSL connection on the duped fd.
8204:
8205: =item (Blue) WARNING client did not respond to challenge
8206:
8207: This occurs on an insecure (non SSL) connection negotiation request.
8208: lond generates some number from the time, the PID and sends it to
8209: the client. The client must respond by echoing this information back.
8210: If the client does not do so, that's a violation of the challenge
8211: protocols and the connection will be failed.
8212:
8213: =item (Red) No manager table. Nobody can manage!!
8214:
8215: lond has the concept of privileged hosts that
8216: can perform remote management function such
8217: as update the hosts.tab. The manager hosts
8218: are described in the
8219: ~httpd/lonTabs/managers.tab file.
8220: this message is logged if this file is missing.
8221:
8222:
8223: =item (Green) Registering manager <dnsname> as <cluster_name> with <ipaddress>
8224:
8225: Reports the successful parse and registration
8226: of a specific manager.
8227:
8228: =item Green existing host <clustername:dnsname>
8229:
8230: The manager host is already defined in the hosts.tab
8231: the information in that table, rather than the info in the
8232: manager table will be used to determine the manager's ip.
8233:
8234: =item (Red) Unable to craete <filename>
8235:
8236: lond has been asked to create new versions of an administrative
8237: file (by a manager). When this is done, the new file is created
8238: in a temp file and then renamed into place so that there are always
8239: usable administrative files, even if the update fails. This failure
8240: message means that the temp file could not be created.
8241: The update is abandoned, and the old file is available for use.
8242:
8243: =item (Green) CopyFile from <oldname> to <newname> failed
8244:
8245: In an update of administrative files, the copy of the existing file to a
8246: backup file failed. The installation of the new file may still succeed,
8247: but there will not be a back up file to rever to (this should probably
8248: be yellow).
8249:
8250: =item (Green) Pushfile: backed up <oldname> to <newname>
8251:
8252: See above, the backup of the old administrative file succeeded.
8253:
8254: =item (Red) Pushfile: Unable to install <filename> <reason>
8255:
8256: The new administrative file could not be installed. In this case,
8257: the old administrative file is still in use.
8258:
8259: =item (Green) Installed new < filename>.
8260:
8261: The new administrative file was successfullly installed.
8262:
8263: =item (Red) Reinitializing lond pid=<pid>
8264:
8265: The lonc child process <pid> will be sent a USR2
8266: signal.
8267:
8268: =item (Red) Reinitializing self
8269:
8270: We've been asked to re-read our administrative files,and
8271: are doing so.
8272:
8273: =item (Yellow) error:Invalid process identifier <ident>
8274:
8275: A reinit command was received, but the target part of the
8276: command was not valid. It must be either
8277: 'lond' or 'lonc' but was <ident>
8278:
8279: =item (Green) isValideditCommand checking: Command = <command> Key = <key> newline = <newline>
8280:
8281: Checking to see if lond has been handed a valid edit
8282: command. It is possible the edit command is not valid
8283: in that case there are no log messages to indicate that.
8284:
8285: =item Result of password change for <username> pwchange_success
8286:
8287: The password for <username> was
8288: successfully changed.
8289:
8290: =item Unable to open <user> passwd to change password
8291:
8292: Could not rewrite the
8293: internal password file for a user
8294:
8295: =item Result of password change for <user> : <result>
8296:
8297: A unix password change for <user> was attempted
8298: and the pipe returned <result>
8299:
8300: =item LWP GET: <message> for <fname> (<remoteurl>)
8301:
8302: The lightweight process fetch for a resource failed
8303: with <message> the local filename that should
8304: have existed/been created was <fname> the
8305: corresponding URI: <remoteurl> This is emitted in several
8306: places.
8307:
8308: =item Unable to move <transname> to <destname>
8309:
8310: From fetch_user_file_handler - the user file was replicated but could not
8311: be mv'd to its final location.
8312:
8313: =item Looking for <domain> <username>
8314:
8315: From user_has_session_handler - This should be a Debug call instead
8316: it indicates lond is about to check whether the specified user has a
8317: session active on the specified domain on the local host.
8318:
8319: =item Client <ip> (<name>) hanging up: <input>
8320:
8321: lond has been asked to exit by its client. The <ip> and <name> identify the
8322: client systemand <input> is the full exit command sent to the server.
8323:
8324: =item Red CRITICAL: ABNORMAL EXIT. child <pid> for server <hostname> died through a crass with this error->[<message>].
8325:
8326: A lond child terminated. NOte that this termination can also occur when the
8327: child receives the QUIT or DIE signals. <pid> is the process id of the child,
8328: <hostname> the host lond is working for, and <message> the reason the child died
8329: to the best of our ability to get it (I would guess that any numeric value
8330: represents and errno value). This is immediately followed by
8331:
8332: =item Famous last words: Catching exception - <log>
8333:
8334: Where log is some recent information about the state of the child.
8335:
8336: =item Red CRITICAL: TIME OUT <pid>
8337:
8338: Some timeout occured for server <pid>. THis is normally a timeout on an LWP
8339: doing an HTTP::GET.
8340:
8341: =item child <pid> died
8342:
8343: The reaper caught a SIGCHILD for the lond child process <pid>
8344: This should be modified to also display the IP of the dying child
8345: $children{$pid}
8346:
8347: =item Unknown child 0 died
8348: A child died but the wait for it returned a pid of zero which really should not
8349: ever happen.
8350:
8351: =item Child <which> - <pid> looks like we missed it's death
8352:
8353: When a sigchild is received, the reaper process checks all children to see if they are
8354: alive. If children are dying quite quickly, the lack of signal queuing can mean
8355: that a signal hearalds the death of more than one child. If so this message indicates
8356: which other one died. <which> is the ip of a dead child
8357:
8358: =item Free socket: <shutdownretval>
8359:
8360: The HUNTSMAN sub was called due to a SIGINT in a child process. The socket is being shutdown.
8361: for whatever reason, <shutdownretval> is printed but in fact shutdown() is not documented
8362: to return anything. This is followed by:
8363:
8364: =item Red CRITICAL: Shutting down
8365:
8366: Just prior to exit.
8367:
8368: =item Free socket: <shutdownretval>
8369:
8370: The HUPSMAN sub was called due to a SIGHUP. all children get killsed, and lond execs itself.
8371: This is followed by:
8372:
8373: =item (Red) CRITICAL: Restarting
8374:
8375: lond is about to exec itself to restart.
8376:
8377: =item (Blue) Updating connections
8378:
8379: (In response to a USR2). All the children (except the one for localhost)
8380: are about to be killed, the hosts tab reread, and Apache reloaded via apachereload.
8381:
8382: =item (Blue) UpdateHosts killing child <pid> for ip <ip>
8383:
8384: Due to USR2 as above.
8385:
8386: =item (Green) keeping child for ip <ip> (pid = <pid>)
8387:
8388: In response to USR2 as above, the child indicated is not being restarted because
8389: it's assumed that we'll always need a child for the localhost.
8390:
8391:
8392: =item Going to check on the children
8393:
8394: Parent is about to check on the health of the child processes.
8395: Note that this is in response to a USR1 sent to the parent lond.
8396: there may be one or more of the next two messages:
8397:
8398: =item <pid> is dead
8399:
8400: A child that we have in our child hash as alive has evidently died.
8401:
8402: =item Child <pid> did not respond
8403:
8404: In the health check the child <pid> did not update/produce a pid_.txt
8405: file when sent it's USR1 signal. That process is killed with a 9 signal, as it's
8406: assumed to be hung in some un-fixable way.
8407:
8408: =item Finished checking children
8409:
8410: Master processs's USR1 processing is cojmplete.
8411:
8412: =item (Red) CRITICAL: ------- Starting ------
8413:
8414: (There are more '-'s on either side). Lond has forked itself off to
8415: form a new session and is about to start actual initialization.
8416:
8417: =item (Green) Attempting to start child (<client>)
8418:
8419: Started a new child process for <client>. Client is IO::Socket object
8420: connected to the child. This was as a result of a TCP/IP connection from a client.
8421:
8422: =item Unable to determine who caller was, getpeername returned nothing
8423:
8424: In child process initialization. either getpeername returned undef or
8425: a zero sized object was returned. Processing continues, but in my opinion,
8426: this should be cause for the child to exit.
8427:
8428: =item Unable to determine clientip
8429:
8430: In child process initialization. The peer address from getpeername was not defined.
8431: The client address is stored as "Unavailable" and processing continues.
8432:
8433: =item (Yellow) INFO: Connection <ip> <name> connection type = <type>
8434:
8435: In child initialization. A good connectionw as received from <ip>.
8436:
8437: =over 2
8438:
8439: =item <name>
8440:
8441: is the name of the client from hosts.tab.
8442:
8443: =item <type>
8444:
8445: Is the connection type which is either
8446:
8447: =over 2
8448:
8449: =item manager
8450:
8451: The connection is from a manager node, not in hosts.tab
8452:
8453: =item client
8454:
8455: the connection is from a non-manager in the hosts.tab
8456:
8457: =item both
8458:
8459: The connection is from a manager in the hosts.tab.
8460:
8461: =back
8462:
8463: =back
8464:
8465: =item (Blue) Certificates not installed -- trying insecure auth
8466:
8467: One of the certificate file, key file or
8468: certificate authority file could not be found for a client attempting
8469: SSL connection intiation. COnnection will be attemptied in in-secure mode.
8470: (this would be a system with an up to date lond that has not gotten a
8471: certificate from us).
8472:
8473: =item (Green) Successful local authentication
8474:
8475: A local connection successfully negotiated the encryption key.
8476: In this case the IDEA key is in a file (that is hopefully well protected).
8477:
8478: =item (Green) Successful ssl authentication with <client>
8479:
8480: The client (<client> is the peer's name in hosts.tab), has successfully
8481: negotiated an SSL connection with this child process.
8482:
8483: =item (Green) Successful insecure authentication with <client>
8484:
8485:
8486: The client has successfully negotiated an insecure connection withthe child process.
8487:
8488: =item (Yellow) Attempted insecure connection disallowed
8489:
8490: The client attempted and failed to successfully negotiate a successful insecure
8491: connection. This can happen either because the variable londAllowInsecure is false
8492: or undefined, or becuse the child did not successfully echo back the challenge
8493: string.
8494:
8495:
8496: =back
8497:
1.441 raeburn 8498: =back
8499:
1.409 foxr 8500:
8501: =cut
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