Annotation of loncom/lond, revision 1.489.2.43.2.7
1.1 albertel 1: #!/usr/bin/perl
2: # The LearningOnline Network
3: # lond "LON Daemon" Server (port "LOND" 5663)
1.60 www 4: #
1.489.2.43.2. (raeburn 5:): # $Id: lond,v 1.489.2.43.2.6 2023/01/23 03:43:33 raeburn Exp $
1.60 www 6: #
7: # Copyright Michigan State University Board of Trustees
8: #
9: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
10: #
11: # LON-CAPA is free software; you can redistribute it and/or modify
12: # it under the terms of the GNU General Public License as published by
1.167 foxr 13: # the Free Software Foundation; either version 2 of the License, or
1.60 www 14: # (at your option) any later version.
15: #
16: # LON-CAPA is distributed in the hope that it will be useful,
17: # but WITHOUT ANY WARRANTY; without even the implied warranty of
18: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19: # GNU General Public License for more details.
20: #
21: # You should have received a copy of the GNU General Public License
22: # along with LON-CAPA; if not, write to the Free Software
1.178 foxr 23: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
1.60 www 24: #
25: # /home/httpd/html/adm/gpl.txt
26: #
1.161 foxr 27:
28:
1.60 www 29: # http://www.lon-capa.org/
30: #
1.54 harris41 31:
1.134 albertel 32: use strict;
1.80 harris41 33: use lib '/home/httpd/lib/perl/';
1.325 albertel 34: use LONCAPA;
1.80 harris41 35: use LONCAPA::Configuration;
1.489.2.4 raeburn 36: use LONCAPA::Lond;
1.80 harris41 37:
1.1 albertel 38: use IO::Socket;
39: use IO::File;
1.126 albertel 40: #use Apache::File;
1.1 albertel 41: use POSIX;
42: use Crypt::IDEA;
43: use LWP::UserAgent();
1.347 raeburn 44: use Digest::MD5 qw(md5_hex);
1.3 www 45: use GDBM_File;
1.91 albertel 46: use Authen::Krb5;
1.49 albertel 47: use localauth;
1.193 raeburn 48: use localenroll;
1.265 albertel 49: use localstudentphoto;
1.143 foxr 50: use File::Copy;
1.292 albertel 51: use File::Find;
1.200 matthew 52: use LONCAPA::lonlocal;
53: use LONCAPA::lonssl;
1.221 albertel 54: use Fcntl qw(:flock);
1.383 raeburn 55: use Apache::lonnet;
1.472 raeburn 56: use Mail::Send;
1.489.2.21 raeburn 57: use Crypt::Eksblowfish::Bcrypt;
58: use Digest::SHA;
59: use Encode;
1.1 albertel 60:
1.463 foxr 61: my $DEBUG = 0; # Non zero to enable debug log entries.
1.77 foxr 62:
1.57 www 63: my $status='';
64: my $lastlog='';
65:
1.489.2.43.2. (raeburn 66:): my $VERSION='$Revision: 1.489.2.43.2.6 $'; #' stupid emacs
1.121 albertel 67: my $remoteVERSION;
1.214 foxr 68: my $currenthostid="default";
1.115 albertel 69: my $currentdomainid;
1.134 albertel 70:
71: my $client;
1.200 matthew 72: my $clientip; # IP address of client.
73: my $clientname; # LonCAPA name of client.
1.448 raeburn 74: my $clientversion; # LonCAPA version running on client.
75: my $clienthomedom; # LonCAPA domain of homeID for client.
76: # primary library server.
1.140 foxr 77:
1.134 albertel 78: my $server;
1.200 matthew 79:
80: my $keymode;
1.198 foxr 81:
1.207 foxr 82: my $cipher; # Cipher key negotiated with client
83: my $tmpsnum = 0; # Id of tmpputs.
84:
1.178 foxr 85: #
86: # Connection type is:
87: # client - All client actions are allowed
88: # manager - only management functions allowed.
89: # both - Both management and client actions are allowed
90: #
1.161 foxr 91:
1.178 foxr 92: my $ConnectionType;
1.161 foxr 93:
1.178 foxr 94: my %managers; # Ip -> manager names
1.161 foxr 95:
1.178 foxr 96: my %perlvar; # Will have the apache conf defined perl vars.
1.134 albertel 97:
1.480 raeburn 98: my $dist;
99:
1.178 foxr 100: #
1.207 foxr 101: # The hash below is used for command dispatching, and is therefore keyed on the request keyword.
102: # Each element of the hash contains a reference to an array that contains:
103: # A reference to a sub that executes the request corresponding to the keyword.
104: # A flag that is true if the request must be encoded to be acceptable.
105: # A mask with bits as follows:
106: # CLIENT_OK - Set when the function is allowed by ordinary clients
107: # MANAGER_OK - Set when the function is allowed to manager clients.
108: #
109: my $CLIENT_OK = 1;
110: my $MANAGER_OK = 2;
111: my %Dispatcher;
112:
113:
114: #
1.178 foxr 115: # The array below are password error strings."
116: #
117: my $lastpwderror = 13; # Largest error number from lcpasswd.
118: my @passwderrors = ("ok",
1.287 foxr 119: "pwchange_failure - lcpasswd must be run as user 'www'",
120: "pwchange_failure - lcpasswd got incorrect number of arguments",
121: "pwchange_failure - lcpasswd did not get the right nubmer of input text lines",
122: "pwchange_failure - lcpasswd too many simultaneous pwd changes in progress",
123: "pwchange_failure - lcpasswd User does not exist.",
124: "pwchange_failure - lcpasswd Incorrect current passwd",
125: "pwchange_failure - lcpasswd Unable to su to root.",
126: "pwchange_failure - lcpasswd Cannot set new passwd.",
127: "pwchange_failure - lcpasswd Username has invalid characters",
128: "pwchange_failure - lcpasswd Invalid characters in password",
129: "pwchange_failure - lcpasswd User already exists",
130: "pwchange_failure - lcpasswd Something went wrong with user addition.",
131: "pwchange_failure - lcpasswd Password mismatch",
132: "pwchange_failure - lcpasswd Error filename is invalid");
1.97 foxr 133:
134:
1.412 foxr 135: # This array are the errors from lcinstallfile:
136:
137: my @installerrors = ("ok",
138: "Initial user id of client not that of www",
139: "Usage error, not enough command line arguments",
1.489.2.5 raeburn 140: "Source filename does not exist",
141: "Destination filename does not exist",
1.412 foxr 142: "Some file operation failed",
143: "Invalid table filename."
144: );
1.207 foxr 145:
146: #
147: # Statistics that are maintained and dislayed in the status line.
148: #
1.212 foxr 149: my $Transactions = 0; # Number of attempted transactions.
150: my $Failures = 0; # Number of transcations failed.
1.207 foxr 151:
152: # ResetStatistics:
153: # Resets the statistics counters:
154: #
155: sub ResetStatistics {
156: $Transactions = 0;
157: $Failures = 0;
158: }
159:
1.200 matthew 160: #------------------------------------------------------------------------
161: #
162: # LocalConnection
163: # Completes the formation of a locally authenticated connection.
164: # This function will ensure that the 'remote' client is really the
165: # local host. If not, the connection is closed, and the function fails.
166: # If so, initcmd is parsed for the name of a file containing the
167: # IDEA session key. The fie is opened, read, deleted and the session
168: # key returned to the caller.
169: #
170: # Parameters:
171: # $Socket - Socket open on client.
172: # $initcmd - The full text of the init command.
173: #
174: # Returns:
175: # IDEA session key on success.
176: # undef on failure.
177: #
178: sub LocalConnection {
179: my ($Socket, $initcmd) = @_;
1.373 albertel 180: Debug("Attempting local connection: $initcmd client: $clientip");
1.277 albertel 181: if($clientip ne "127.0.0.1") {
1.200 matthew 182: &logthis('<font color="red"> LocalConnection rejecting non local: '
1.373 albertel 183: ."$clientip ne 127.0.0.1 </font>");
1.200 matthew 184: close $Socket;
185: return undef;
1.224 foxr 186: } else {
1.200 matthew 187: chomp($initcmd); # Get rid of \n in filename.
188: my ($init, $type, $name) = split(/:/, $initcmd);
189: Debug(" Init command: $init $type $name ");
190:
191: # Require that $init = init, and $type = local: Otherwise
192: # the caller is insane:
193:
194: if(($init ne "init") && ($type ne "local")) {
195: &logthis('<font color = "red"> LocalConnection: caller is insane! '
196: ."init = $init, and type = $type </font>");
197: close($Socket);;
198: return undef;
199:
200: }
201: # Now get the key filename:
202:
203: my $IDEAKey = lonlocal::ReadKeyFile($name);
204: return $IDEAKey;
205: }
206: }
207: #------------------------------------------------------------------------------
208: #
209: # SSLConnection
210: # Completes the formation of an ssh authenticated connection. The
211: # socket is promoted to an ssl socket. If this promotion and the associated
212: # certificate exchange are successful, the IDEA key is generated and sent
213: # to the remote peer via the SSL tunnel. The IDEA key is also returned to
214: # the caller after the SSL tunnel is torn down.
215: #
216: # Parameters:
217: # Name Type Purpose
218: # $Socket IO::Socket::INET Plaintext socket.
219: #
220: # Returns:
221: # IDEA key on success.
222: # undef on failure.
223: #
224: sub SSLConnection {
225: my $Socket = shift;
226:
227: Debug("SSLConnection: ");
228: my $KeyFile = lonssl::KeyFile();
229: if(!$KeyFile) {
230: my $err = lonssl::LastError();
231: &logthis("<font color=\"red\"> CRITICAL"
232: ."Can't get key file $err </font>");
233: return undef;
234: }
235: my ($CACertificate,
236: $Certificate) = lonssl::CertificateFile();
237:
238:
239: # If any of the key, certificate or certificate authority
240: # certificate filenames are not defined, this can't work.
241:
242: if((!$Certificate) || (!$CACertificate)) {
243: my $err = lonssl::LastError();
244: &logthis("<font color=\"red\"> CRITICAL"
245: ."Can't get certificates: $err </font>");
246:
247: return undef;
248: }
249: Debug("Key: $KeyFile CA: $CACertificate Cert: $Certificate");
250:
251: # Indicate to our peer that we can procede with
252: # a transition to ssl authentication:
253:
254: print $Socket "ok:ssl\n";
255:
256: Debug("Approving promotion -> ssl");
257: # And do so:
258:
259: my $SSLSocket = lonssl::PromoteServerSocket($Socket,
260: $CACertificate,
261: $Certificate,
262: $KeyFile);
263: if(! ($SSLSocket) ) { # SSL socket promotion failed.
264: my $err = lonssl::LastError();
265: &logthis("<font color=\"red\"> CRITICAL "
266: ."SSL Socket promotion failed: $err </font>");
267: return undef;
268: }
269: Debug("SSL Promotion successful");
270:
271: #
272: # The only thing we'll use the socket for is to send the IDEA key
273: # to the peer:
274:
275: my $Key = lonlocal::CreateCipherKey();
276: print $SSLSocket "$Key\n";
277:
278: lonssl::Close($SSLSocket);
279:
280: Debug("Key exchange complete: $Key");
281:
282: return $Key;
283: }
284: #
285: # InsecureConnection:
286: # If insecure connections are allowd,
287: # exchange a challenge with the client to 'validate' the
288: # client (not really, but that's the protocol):
289: # We produce a challenge string that's sent to the client.
290: # The client must then echo the challenge verbatim to us.
291: #
292: # Parameter:
293: # Socket - Socket open on the client.
294: # Returns:
295: # 1 - success.
296: # 0 - failure (e.g.mismatch or insecure not allowed).
297: #
298: sub InsecureConnection {
299: my $Socket = shift;
300:
301: # Don't even start if insecure connections are not allowed.
302:
303: if(! $perlvar{londAllowInsecure}) { # Insecure connections not allowed.
304: return 0;
305: }
306:
307: # Fabricate a challenge string and send it..
308:
309: my $challenge = "$$".time; # pid + time.
310: print $Socket "$challenge\n";
311: &status("Waiting for challenge reply");
312:
313: my $answer = <$Socket>;
314: $answer =~s/\W//g;
315: if($challenge eq $answer) {
316: return 1;
1.224 foxr 317: } else {
1.200 matthew 318: logthis("<font color='blue'>WARNING client did not respond to challenge</font>");
319: &status("No challenge reqply");
320: return 0;
321: }
322:
323:
324: }
1.251 foxr 325: #
326: # Safely execute a command (as long as it's not a shel command and doesn
327: # not require/rely on shell escapes. The function operates by doing a
328: # a pipe based fork and capturing stdout and stderr from the pipe.
329: #
330: # Formal Parameters:
331: # $line - A line of text to be executed as a command.
332: # Returns:
333: # The output from that command. If the output is multiline the caller
334: # must know how to split up the output.
335: #
336: #
337: sub execute_command {
338: my ($line) = @_;
339: my @words = split(/\s/, $line); # Bust the command up into words.
340: my $output = "";
341:
342: my $pid = open(CHILD, "-|");
343:
344: if($pid) { # Parent process
345: Debug("In parent process for execute_command");
346: my @data = <CHILD>; # Read the child's outupt...
347: close CHILD;
348: foreach my $output_line (@data) {
349: Debug("Adding $output_line");
350: $output .= $output_line; # Presumably has a \n on it.
351: }
352:
353: } else { # Child process
354: close (STDERR);
355: open (STDERR, ">&STDOUT");# Combine stderr, and stdout...
356: exec(@words); # won't return.
357: }
358: return $output;
359: }
360:
1.200 matthew 361:
1.140 foxr 362: # GetCertificate: Given a transaction that requires a certificate,
363: # this function will extract the certificate from the transaction
364: # request. Note that at this point, the only concept of a certificate
365: # is the hostname to which we are connected.
366: #
367: # Parameter:
368: # request - The request sent by our client (this parameterization may
369: # need to change when we really use a certificate granting
370: # authority.
371: #
372: sub GetCertificate {
373: my $request = shift;
374:
375: return $clientip;
376: }
1.161 foxr 377:
1.178 foxr 378: #
379: # Return true if client is a manager.
380: #
381: sub isManager {
382: return (($ConnectionType eq "manager") || ($ConnectionType eq "both"));
383: }
384: #
385: # Return tru if client can do client functions
386: #
387: sub isClient {
388: return (($ConnectionType eq "client") || ($ConnectionType eq "both"));
389: }
1.161 foxr 390:
391:
1.156 foxr 392: #
393: # ReadManagerTable: Reads in the current manager table. For now this is
394: # done on each manager authentication because:
395: # - These authentications are not frequent
396: # - This allows dynamic changes to the manager table
397: # without the need to signal to the lond.
398: #
399: sub ReadManagerTable {
400:
1.412 foxr 401: &Debug("Reading manager table");
1.156 foxr 402: # Clean out the old table first..
403:
1.166 foxr 404: foreach my $key (keys %managers) {
405: delete $managers{$key};
406: }
407:
408: my $tablename = $perlvar{'lonTabDir'}."/managers.tab";
409: if (!open (MANAGERS, $tablename)) {
1.473 raeburn 410: my $hostname = &Apache::lonnet::hostname($perlvar{'lonHostID'});
411: if (&Apache::lonnet::is_LC_dns($hostname)) {
1.472 raeburn 412: &logthis('<font color="red">No manager table. Nobody can manage!!</font>');
413: }
414: return;
1.166 foxr 415: }
416: while(my $host = <MANAGERS>) {
417: chomp($host);
418: if ($host =~ "^#") { # Comment line.
419: next;
420: }
1.368 albertel 421: if (!defined &Apache::lonnet::get_host_ip($host)) { # This is a non cluster member
1.161 foxr 422: # The entry is of the form:
423: # cluname:hostname
424: # cluname - A 'cluster hostname' is needed in order to negotiate
425: # the host key.
426: # hostname- The dns name of the host.
427: #
1.166 foxr 428: my($cluname, $dnsname) = split(/:/, $host);
429:
430: my $ip = gethostbyname($dnsname);
431: if(defined($ip)) { # bad names don't deserve entry.
432: my $hostip = inet_ntoa($ip);
433: $managers{$hostip} = $cluname;
434: logthis('<font color="green"> registering manager '.
435: "$dnsname as $cluname with $hostip </font>\n");
436: }
437: } else {
438: logthis('<font color="green"> existing host'." $host</font>\n");
1.472 raeburn 439: $managers{&Apache::lonnet::get_host_ip($host)} = $host; # Use info from cluster tab if cluster memeber
1.166 foxr 440: }
441: }
1.156 foxr 442: }
1.140 foxr 443:
444: #
445: # ValidManager: Determines if a given certificate represents a valid manager.
446: # in this primitive implementation, the 'certificate' is
447: # just the connecting loncapa client name. This is checked
448: # against a valid client list in the configuration.
449: #
450: #
451: sub ValidManager {
452: my $certificate = shift;
453:
1.163 foxr 454: return isManager;
1.140 foxr 455: }
456: #
1.143 foxr 457: # CopyFile: Called as part of the process of installing a
458: # new configuration file. This function copies an existing
459: # file to a backup file.
460: # Parameters:
461: # oldfile - Name of the file to backup.
462: # newfile - Name of the backup file.
463: # Return:
464: # 0 - Failure (errno has failure reason).
465: # 1 - Success.
466: #
467: sub CopyFile {
1.192 foxr 468:
469: my ($oldfile, $newfile) = @_;
1.143 foxr 470:
1.281 matthew 471: if (! copy($oldfile,$newfile)) {
472: return 0;
1.143 foxr 473: }
1.281 matthew 474: chmod(0660, $newfile);
475: return 1;
1.143 foxr 476: }
1.157 foxr 477: #
478: # Host files are passed out with externally visible host IPs.
479: # If, for example, we are behind a fire-wall or NAT host, our
480: # internally visible IP may be different than the externally
481: # visible IP. Therefore, we always adjust the contents of the
482: # host file so that the entry for ME is the IP that we believe
483: # we have. At present, this is defined as the entry that
484: # DNS has for us. If by some chance we are not able to get a
485: # DNS translation for us, then we assume that the host.tab file
486: # is correct.
487: # BUGBUGBUG - in the future, we really should see if we can
488: # easily query the interface(s) instead.
489: # Parameter(s):
490: # contents - The contents of the host.tab to check.
491: # Returns:
492: # newcontents - The adjusted contents.
493: #
494: #
495: sub AdjustHostContents {
496: my $contents = shift;
497: my $adjusted;
498: my $me = $perlvar{'lonHostID'};
499:
1.354 albertel 500: foreach my $line (split(/\n/,$contents)) {
1.472 raeburn 501: if(!(($line eq "") || ($line =~ /^ *\#/) || ($line =~ /^ *$/) ||
502: ($line =~ /^\s*\^/))) {
1.157 foxr 503: chomp($line);
504: my ($id,$domain,$role,$name,$ip,$maxcon,$idleto,$mincon)=split(/:/,$line);
505: if ($id eq $me) {
1.354 albertel 506: my $ip = gethostbyname($name);
507: my $ipnew = inet_ntoa($ip);
508: $ip = $ipnew;
1.157 foxr 509: # Reconstruct the host line and append to adjusted:
510:
1.354 albertel 511: my $newline = "$id:$domain:$role:$name:$ip";
512: if($maxcon ne "") { # Not all hosts have loncnew tuning params
513: $newline .= ":$maxcon:$idleto:$mincon";
514: }
515: $adjusted .= $newline."\n";
1.157 foxr 516:
1.354 albertel 517: } else { # Not me, pass unmodified.
518: $adjusted .= $line."\n";
519: }
1.157 foxr 520: } else { # Blank or comment never re-written.
521: $adjusted .= $line."\n"; # Pass blanks and comments as is.
522: }
1.354 albertel 523: }
524: return $adjusted;
1.157 foxr 525: }
1.143 foxr 526: #
527: # InstallFile: Called to install an administrative file:
1.412 foxr 528: # - The file is created int a temp directory called <name>.tmp
529: # - lcinstall file is called to install the file.
530: # since the web app has no direct write access to the table directory
1.143 foxr 531: #
532: # Parameters:
533: # Name of the file
534: # File Contents.
535: # Return:
536: # nonzero - success.
537: # 0 - failure and $! has an errno.
1.412 foxr 538: # Assumptions:
539: # File installtion is a relatively infrequent
1.143 foxr 540: #
541: sub InstallFile {
1.192 foxr 542:
543: my ($Filename, $Contents) = @_;
1.412 foxr 544: # my $TempFile = $Filename.".tmp";
545: my $exedir = $perlvar{'lonDaemons'};
546: my $tmpdir = $exedir.'/tmp/';
547: my $TempFile = $tmpdir."TempTableFile.tmp";
1.143 foxr 548:
549: # Open the file for write:
550:
551: my $fh = IO::File->new("> $TempFile"); # Write to temp.
552: if(!(defined $fh)) {
553: &logthis('<font color="red"> Unable to create '.$TempFile."</font>");
554: return 0;
555: }
556: # write the contents of the file:
557:
558: print $fh ($Contents);
559: $fh->close; # In case we ever have a filesystem w. locking
560:
1.412 foxr 561: chmod(0664, $TempFile); # Everyone can write it.
562:
563: # Use lcinstall file to put the file in the table directory...
564:
565: &Debug("Opening pipe to $exedir/lcinstallfile $TempFile $Filename");
566: my $pf = IO::File->new("| $exedir/lcinstallfile $TempFile $Filename > $exedir/logs/lcinstallfile.log");
567: close $pf;
568: my $err = $?;
569: &Debug("Status is $err");
570: if ($err != 0) {
571: my $msg = $err;
572: if ($err < @installerrors) {
573: $msg = $installerrors[$err];
574: }
575: &logthis("Install failed for table file $Filename : $msg");
576: return 0;
577: }
578:
579: # Remove the temp file:
1.143 foxr 580:
1.412 foxr 581: unlink($TempFile);
1.143 foxr 582:
583: return 1;
584: }
1.200 matthew 585:
586:
1.169 foxr 587: #
588: # ConfigFileFromSelector: converts a configuration file selector
1.411 foxr 589: # into a configuration file pathname.
1.472 raeburn 590: # Supports the following file selectors:
591: # hosts, domain, dns_hosts, dns_domain
1.411 foxr 592: #
1.169 foxr 593: #
594: # Parameters:
595: # selector - Configuration file selector.
596: # Returns:
597: # Full path to the file or undef if the selector is invalid.
598: #
599: sub ConfigFileFromSelector {
600: my $selector = shift;
601: my $tablefile;
602:
603: my $tabledir = $perlvar{'lonTabDir'}.'/';
1.472 raeburn 604: if (($selector eq "hosts") || ($selector eq "domain") ||
605: ($selector eq "dns_hosts") || ($selector eq "dns_domain")) {
1.411 foxr 606: $tablefile = $tabledir.$selector.'.tab';
1.169 foxr 607: }
608: return $tablefile;
609: }
1.143 foxr 610: #
1.141 foxr 611: # PushFile: Called to do an administrative push of a file.
612: # - Ensure the file being pushed is one we support.
613: # - Backup the old file to <filename.saved>
614: # - Separate the contents of the new file out from the
615: # rest of the request.
616: # - Write the new file.
617: # Parameter:
618: # Request - The entire user request. This consists of a : separated
619: # string pushfile:tablename:contents.
620: # NOTE: The contents may have :'s in it as well making things a bit
621: # more interesting... but not much.
622: # Returns:
623: # String to send to client ("ok" or "refused" if bad file).
624: #
625: sub PushFile {
1.489.2.15 raeburn 626: my $request = shift;
1.141 foxr 627: my ($command, $filename, $contents) = split(":", $request, 3);
1.412 foxr 628: &Debug("PushFile");
1.141 foxr 629:
630: # At this point in time, pushes for only the following tables are
631: # supported:
632: # hosts.tab ($filename eq host).
633: # domain.tab ($filename eq domain).
1.472 raeburn 634: # dns_hosts.tab ($filename eq dns_host).
635: # dns_domain.tab ($filename eq dns_domain).
1.141 foxr 636: # Construct the destination filename or reject the request.
637: #
638: # lonManage is supposed to ensure this, however this session could be
639: # part of some elaborate spoof that managed somehow to authenticate.
640: #
641:
1.169 foxr 642:
643: my $tablefile = ConfigFileFromSelector($filename);
644: if(! (defined $tablefile)) {
1.141 foxr 645: return "refused";
646: }
1.412 foxr 647:
1.157 foxr 648: # If the file being pushed is the host file, we adjust the entry for ourself so that the
649: # IP will be our current IP as looked up in dns. Note this is only 99% good as it's possible
650: # to conceive of conditions where we don't have a DNS entry locally. This is possible in a
651: # network sense but it doesn't make much sense in a LonCAPA sense so we ignore (for now)
652: # that possibilty.
653:
654: if($filename eq "host") {
655: $contents = AdjustHostContents($contents);
1.489.2.43.2. (raeburn 656:): } elsif (($filename eq 'dns_hosts') || ($filename eq 'dns_domain')) {
1.489.2.15 raeburn 657: if ($contents eq '') {
658: &logthis('<font color="red"> Pushfile: unable to install '
659: .$tablefile." - no data received from push. </font>");
660: return 'error: push had no data';
661: }
662: if (&Apache::lonnet::get_host_ip($clientname)) {
663: my $clienthost = &Apache::lonnet::hostname($clientname);
664: if ($managers{$clientip} eq $clientname) {
665: my $clientprotocol = $Apache::lonnet::protocol{$clientname};
666: $clientprotocol = 'http' if ($clientprotocol ne 'https');
667: my $url = '/adm/'.$filename;
668: $url =~ s{_}{/};
669: my $ua=new LWP::UserAgent;
670: $ua->timeout(60);
671: my $request=new HTTP::Request('GET',"$clientprotocol://$clienthost$url");
672: my $response=$ua->request($request);
673: if ($response->is_error()) {
674: &logthis('<font color="red"> Pushfile: unable to install '
675: .$tablefile." - error attempting to pull data. </font>");
676: return 'error: pull failed';
677: } else {
678: my $result = $response->content;
679: chomp($result);
680: unless ($result eq $contents) {
681: &logthis('<font color="red"> Pushfile: unable to install '
682: .$tablefile." - pushed data and pulled data differ. </font>");
683: my $pushleng = length($contents);
684: my $pullleng = length($result);
685: if ($pushleng != $pullleng) {
686: return "error: $pushleng vs $pullleng bytes";
687: } else {
688: return "error: mismatch push and pull";
689: }
690: }
691: }
692: }
693: }
1.157 foxr 694: }
695:
1.141 foxr 696: # Install the new file:
697:
1.412 foxr 698: &logthis("Installing new $tablefile contents:\n$contents");
1.143 foxr 699: if(!InstallFile($tablefile, $contents)) {
700: &logthis('<font color="red"> Pushfile: unable to install '
1.145 foxr 701: .$tablefile." $! </font>");
1.143 foxr 702: return "error:$!";
1.224 foxr 703: } else {
1.143 foxr 704: &logthis('<font color="green"> Installed new '.$tablefile
1.473 raeburn 705: ." - transaction by: $clientname ($clientip)</font>");
1.472 raeburn 706: my $adminmail = $perlvar{'lonAdmEMail'};
707: my $admindom = &Apache::lonnet::host_domain($perlvar{'lonHostID'});
708: if ($admindom ne '') {
709: my %domconfig =
710: &Apache::lonnet::get_dom('configuration',['contacts'],$admindom);
711: if (ref($domconfig{'contacts'}) eq 'HASH') {
712: if ($domconfig{'contacts'}{'adminemail'} ne '') {
713: $adminmail = $domconfig{'contacts'}{'adminemail'};
714: }
715: }
716: }
717: if ($adminmail =~ /^[^\@]+\@[^\@]+$/) {
718: my $msg = new Mail::Send;
719: $msg->to($adminmail);
720: $msg->subject('LON-CAPA DNS update on '.$perlvar{'lonHostID'});
721: $msg->add('Content-type','text/plain; charset=UTF-8');
722: if (my $fh = $msg->open()) {
723: print $fh 'Update to '.$tablefile.' from Cluster Manager '.
1.473 raeburn 724: "$clientname ($clientip)\n";
1.472 raeburn 725: $fh->close;
726: }
727: }
1.143 foxr 728: }
729:
1.141 foxr 730: # Indicate success:
731:
732: return "ok";
733:
734: }
1.145 foxr 735:
736: #
737: # Called to re-init either lonc or lond.
738: #
739: # Parameters:
740: # request - The full request by the client. This is of the form
741: # reinit:<process>
742: # where <process> is allowed to be either of
743: # lonc or lond
744: #
745: # Returns:
746: # The string to be sent back to the client either:
747: # ok - Everything worked just fine.
748: # error:why - There was a failure and why describes the reason.
749: #
750: #
751: sub ReinitProcess {
752: my $request = shift;
753:
1.146 foxr 754:
755: # separate the request (reinit) from the process identifier and
756: # validate it producing the name of the .pid file for the process.
757: #
758: #
759: my ($junk, $process) = split(":", $request);
1.147 foxr 760: my $processpidfile = $perlvar{'lonDaemons'}.'/logs/';
1.146 foxr 761: if($process eq 'lonc') {
762: $processpidfile = $processpidfile."lonc.pid";
1.147 foxr 763: if (!open(PIDFILE, "< $processpidfile")) {
764: return "error:Open failed for $processpidfile";
765: }
766: my $loncpid = <PIDFILE>;
767: close(PIDFILE);
768: logthis('<font color="red"> Reinitializing lonc pid='.$loncpid
769: ."</font>");
770: kill("USR2", $loncpid);
1.146 foxr 771: } elsif ($process eq 'lond') {
1.147 foxr 772: logthis('<font color="red"> Reinitializing self (lond) </font>');
773: &UpdateHosts; # Lond is us!!
1.146 foxr 774: } else {
775: &logthis('<font color="yellow" Invalid reinit request for '.$process
776: ."</font>");
777: return "error:Invalid process identifier $process";
778: }
1.145 foxr 779: return 'ok';
780: }
1.168 foxr 781: # Validate a line in a configuration file edit script:
782: # Validation includes:
783: # - Ensuring the command is valid.
784: # - Ensuring the command has sufficient parameters
785: # Parameters:
786: # scriptline - A line to validate (\n has been stripped for what it's worth).
1.167 foxr 787: #
1.168 foxr 788: # Return:
789: # 0 - Invalid scriptline.
790: # 1 - Valid scriptline
791: # NOTE:
792: # Only the command syntax is checked, not the executability of the
793: # command.
794: #
795: sub isValidEditCommand {
796: my $scriptline = shift;
797:
798: # Line elements are pipe separated:
799:
800: my ($command, $key, $newline) = split(/\|/, $scriptline);
801: &logthis('<font color="green"> isValideditCommand checking: '.
802: "Command = '$command', Key = '$key', Newline = '$newline' </font>\n");
803:
804: if ($command eq "delete") {
805: #
806: # key with no newline.
807: #
808: if( ($key eq "") || ($newline ne "")) {
809: return 0; # Must have key but no newline.
810: } else {
811: return 1; # Valid syntax.
812: }
1.169 foxr 813: } elsif ($command eq "replace") {
1.168 foxr 814: #
815: # key and newline:
816: #
817: if (($key eq "") || ($newline eq "")) {
818: return 0;
819: } else {
820: return 1;
821: }
1.169 foxr 822: } elsif ($command eq "append") {
823: if (($key ne "") && ($newline eq "")) {
824: return 1;
825: } else {
826: return 0;
827: }
1.168 foxr 828: } else {
829: return 0; # Invalid command.
830: }
831: return 0; # Should not get here!!!
832: }
1.169 foxr 833: #
834: # ApplyEdit - Applies an edit command to a line in a configuration
835: # file. It is the caller's responsiblity to validate the
836: # edit line.
837: # Parameters:
838: # $directive - A single edit directive to apply.
839: # Edit directives are of the form:
840: # append|newline - Appends a new line to the file.
841: # replace|key|newline - Replaces the line with key value 'key'
842: # delete|key - Deletes the line with key value 'key'.
843: # $editor - A config file editor object that contains the
844: # file being edited.
845: #
846: sub ApplyEdit {
1.192 foxr 847:
848: my ($directive, $editor) = @_;
1.169 foxr 849:
850: # Break the directive down into its command and its parameters
851: # (at most two at this point. The meaning of the parameters, if in fact
852: # they exist depends on the command).
853:
854: my ($command, $p1, $p2) = split(/\|/, $directive);
855:
856: if($command eq "append") {
857: $editor->Append($p1); # p1 - key p2 null.
858: } elsif ($command eq "replace") {
859: $editor->ReplaceLine($p1, $p2); # p1 - key p2 = newline.
860: } elsif ($command eq "delete") {
861: $editor->DeleteLine($p1); # p1 - key p2 null.
862: } else { # Should not get here!!!
863: die "Invalid command given to ApplyEdit $command"
864: }
865: }
866: #
867: # AdjustOurHost:
868: # Adjusts a host file stored in a configuration file editor object
869: # for the true IP address of this host. This is necessary for hosts
870: # that live behind a firewall.
871: # Those hosts have a publicly distributed IP of the firewall, but
872: # internally must use their actual IP. We assume that a given
873: # host only has a single IP interface for now.
874: # Formal Parameters:
875: # editor - The configuration file editor to adjust. This
876: # editor is assumed to contain a hosts.tab file.
877: # Strategy:
878: # - Figure out our hostname.
879: # - Lookup the entry for this host.
880: # - Modify the line to contain our IP
881: # - Do a replace for this host.
882: sub AdjustOurHost {
883: my $editor = shift;
884:
885: # figure out who I am.
886:
887: my $myHostName = $perlvar{'lonHostID'}; # LonCAPA hostname.
888:
889: # Get my host file entry.
890:
891: my $ConfigLine = $editor->Find($myHostName);
892: if(! (defined $ConfigLine)) {
893: die "AdjustOurHost - no entry for me in hosts file $myHostName";
894: }
895: # figure out my IP:
896: # Use the config line to get my hostname.
897: # Use gethostbyname to translate that into an IP address.
898: #
1.338 albertel 899: my ($id,$domain,$role,$name,$maxcon,$idleto,$mincon) = split(/:/,$ConfigLine);
1.169 foxr 900: #
901: # Reassemble the config line from the elements in the list.
902: # Note that if the loncnew items were not present before, they will
903: # be now even if they would be empty
904: #
905: my $newConfigLine = $id;
1.338 albertel 906: foreach my $item ($domain, $role, $name, $maxcon, $idleto, $mincon) {
1.169 foxr 907: $newConfigLine .= ":".$item;
908: }
909: # Replace the line:
910:
911: $editor->ReplaceLine($id, $newConfigLine);
912:
913: }
914: #
915: # ReplaceConfigFile:
916: # Replaces a configuration file with the contents of a
917: # configuration file editor object.
918: # This is done by:
919: # - Copying the target file to <filename>.old
920: # - Writing the new file to <filename>.tmp
921: # - Moving <filename.tmp> -> <filename>
922: # This laborious process ensures that the system is never without
923: # a configuration file that's at least valid (even if the contents
924: # may be dated).
925: # Parameters:
926: # filename - Name of the file to modify... this is a full path.
927: # editor - Editor containing the file.
928: #
929: sub ReplaceConfigFile {
1.192 foxr 930:
931: my ($filename, $editor) = @_;
1.168 foxr 932:
1.169 foxr 933: CopyFile ($filename, $filename.".old");
934:
935: my $contents = $editor->Get(); # Get the contents of the file.
936:
937: InstallFile($filename, $contents);
938: }
1.168 foxr 939: #
940: #
941: # Called to edit a configuration table file
1.167 foxr 942: # Parameters:
943: # request - The entire command/request sent by lonc or lonManage
944: # Return:
945: # The reply to send to the client.
1.168 foxr 946: #
1.167 foxr 947: sub EditFile {
948: my $request = shift;
949:
950: # Split the command into it's pieces: edit:filetype:script
951:
1.339 albertel 952: my ($cmd, $filetype, $script) = split(/:/, $request,3); # : in script
1.167 foxr 953:
954: # Check the pre-coditions for success:
955:
1.339 albertel 956: if($cmd != "edit") { # Something is amiss afoot alack.
1.167 foxr 957: return "error:edit request detected, but request != 'edit'\n";
958: }
959: if( ($filetype ne "hosts") &&
960: ($filetype ne "domain")) {
961: return "error:edit requested with invalid file specifier: $filetype \n";
962: }
963:
964: # Split the edit script and check it's validity.
1.168 foxr 965:
966: my @scriptlines = split(/\n/, $script); # one line per element.
967: my $linecount = scalar(@scriptlines);
968: for(my $i = 0; $i < $linecount; $i++) {
969: chomp($scriptlines[$i]);
970: if(!isValidEditCommand($scriptlines[$i])) {
971: return "error:edit with bad script line: '$scriptlines[$i]' \n";
972: }
973: }
1.145 foxr 974:
1.167 foxr 975: # Execute the edit operation.
1.169 foxr 976: # - Create a config file editor for the appropriate file and
977: # - execute each command in the script:
978: #
979: my $configfile = ConfigFileFromSelector($filetype);
980: if (!(defined $configfile)) {
981: return "refused\n";
982: }
983: my $editor = ConfigFileEdit->new($configfile);
1.167 foxr 984:
1.169 foxr 985: for (my $i = 0; $i < $linecount; $i++) {
986: ApplyEdit($scriptlines[$i], $editor);
987: }
988: # If the file is the host file, ensure that our host is
989: # adjusted to have our ip:
990: #
991: if($filetype eq "host") {
992: AdjustOurHost($editor);
993: }
994: # Finally replace the current file with our file.
995: #
996: ReplaceConfigFile($configfile, $editor);
1.167 foxr 997:
998: return "ok\n";
999: }
1.207 foxr 1000:
1.255 foxr 1001: # read_profile
1002: #
1003: # Returns a set of specific entries from a user's profile file.
1004: # this is a utility function that is used by both get_profile_entry and
1005: # get_profile_entry_encrypted.
1006: #
1007: # Parameters:
1008: # udom - Domain in which the user exists.
1009: # uname - User's account name (loncapa account)
1010: # namespace - The profile namespace to open.
1011: # what - A set of & separated queries.
1012: # Returns:
1013: # If all ok: - The string that needs to be shipped back to the user.
1014: # If failure - A string that starts with error: followed by the failure
1015: # reason.. note that this probabyl gets shipped back to the
1016: # user as well.
1017: #
1018: sub read_profile {
1019: my ($udom, $uname, $namespace, $what) = @_;
1020:
1021: my $hashref = &tie_user_hash($udom, $uname, $namespace,
1022: &GDBM_READER());
1023: if ($hashref) {
1024: my @queries=split(/\&/,$what);
1.440 raeburn 1025: if ($namespace eq 'roles') {
1026: @queries = map { &unescape($_); } @queries;
1027: }
1.255 foxr 1028: my $qresult='';
1029:
1030: for (my $i=0;$i<=$#queries;$i++) {
1031: $qresult.="$hashref->{$queries[$i]}&"; # Presumably failure gives empty string.
1032: }
1033: $qresult=~s/\&$//; # Remove trailing & from last lookup.
1.311 albertel 1034: if (&untie_user_hash($hashref)) {
1.255 foxr 1035: return $qresult;
1036: } else {
1037: return "error: ".($!+0)." untie (GDBM) Failed";
1038: }
1039: } else {
1040: if ($!+0 == 2) {
1041: return "error:No such file or GDBM reported bad block error";
1042: } else {
1043: return "error: ".($!+0)." tie (GDBM) Failed";
1044: }
1045: }
1046:
1047: }
1.214 foxr 1048: #--------------------- Request Handlers --------------------------------------------
1049: #
1.215 foxr 1050: # By convention each request handler registers itself prior to the sub
1051: # declaration:
1.214 foxr 1052: #
1053:
1.216 foxr 1054: #++
1055: #
1.214 foxr 1056: # Handles ping requests.
1057: # Parameters:
1058: # $cmd - the actual keyword that invoked us.
1059: # $tail - the tail of the request that invoked us.
1060: # $replyfd- File descriptor connected to the client
1061: # Implicit Inputs:
1062: # $currenthostid - Global variable that carries the name of the host we are
1063: # known as.
1064: # Returns:
1065: # 1 - Ok to continue processing.
1066: # 0 - Program should exit.
1067: # Side effects:
1068: # Reply information is sent to the client.
1069: sub ping_handler {
1070: my ($cmd, $tail, $client) = @_;
1071: Debug("$cmd $tail $client .. $currenthostid:");
1072:
1.387 albertel 1073: Reply( $client,\$currenthostid,"$cmd:$tail");
1.214 foxr 1074:
1075: return 1;
1076: }
1077: ®ister_handler("ping", \&ping_handler, 0, 1, 1); # Ping unencoded, client or manager.
1078:
1.216 foxr 1079: #++
1.215 foxr 1080: #
1081: # Handles pong requests. Pong replies with our current host id, and
1082: # the results of a ping sent to us via our lonc.
1083: #
1084: # Parameters:
1085: # $cmd - the actual keyword that invoked us.
1086: # $tail - the tail of the request that invoked us.
1087: # $replyfd- File descriptor connected to the client
1088: # Implicit Inputs:
1089: # $currenthostid - Global variable that carries the name of the host we are
1090: # connected to.
1091: # Returns:
1092: # 1 - Ok to continue processing.
1093: # 0 - Program should exit.
1094: # Side effects:
1095: # Reply information is sent to the client.
1096: sub pong_handler {
1097: my ($cmd, $tail, $replyfd) = @_;
1098:
1.365 albertel 1099: my $reply=&Apache::lonnet::reply("ping",$clientname);
1.215 foxr 1100: &Reply( $replyfd, "$currenthostid:$reply\n", "$cmd:$tail");
1101: return 1;
1102: }
1103: ®ister_handler("pong", \&pong_handler, 0, 1, 1); # Pong unencoded, client or manager
1104:
1.216 foxr 1105: #++
1106: # Called to establish an encrypted session key with the remote client.
1107: # Note that with secure lond, in most cases this function is never
1108: # invoked. Instead, the secure session key is established either
1109: # via a local file that's locked down tight and only lives for a short
1110: # time, or via an ssl tunnel...and is generated from a bunch-o-random
1111: # bits from /dev/urandom, rather than the predictable pattern used by
1112: # by this sub. This sub is only used in the old-style insecure
1113: # key negotiation.
1114: # Parameters:
1115: # $cmd - the actual keyword that invoked us.
1116: # $tail - the tail of the request that invoked us.
1117: # $replyfd- File descriptor connected to the client
1118: # Implicit Inputs:
1119: # $currenthostid - Global variable that carries the name of the host
1120: # known as.
1.448 raeburn 1121: # $clientname - Global variable that carries the name of the host we're connected to.
1.216 foxr 1122: # Returns:
1123: # 1 - Ok to continue processing.
1124: # 0 - Program should exit.
1125: # Implicit Outputs:
1126: # Reply information is sent to the client.
1127: # $cipher is set with a reference to a new IDEA encryption object.
1128: #
1129: sub establish_key_handler {
1130: my ($cmd, $tail, $replyfd) = @_;
1131:
1132: my $buildkey=time.$$.int(rand 100000);
1133: $buildkey=~tr/1-6/A-F/;
1134: $buildkey=int(rand 100000).$buildkey.int(rand 100000);
1135: my $key=$currenthostid.$clientname;
1136: $key=~tr/a-z/A-Z/;
1137: $key=~tr/G-P/0-9/;
1138: $key=~tr/Q-Z/0-9/;
1139: $key=$key.$buildkey.$key.$buildkey.$key.$buildkey;
1140: $key=substr($key,0,32);
1141: my $cipherkey=pack("H32",$key);
1142: $cipher=new IDEA $cipherkey;
1.387 albertel 1143: &Reply($replyfd, \$buildkey, "$cmd:$tail");
1.216 foxr 1144:
1145: return 1;
1146:
1147: }
1148: ®ister_handler("ekey", \&establish_key_handler, 0, 1,1);
1149:
1.217 foxr 1150: # Handler for the load command. Returns the current system load average
1151: # to the requestor.
1152: #
1153: # Parameters:
1154: # $cmd - the actual keyword that invoked us.
1155: # $tail - the tail of the request that invoked us.
1156: # $replyfd- File descriptor connected to the client
1157: # Implicit Inputs:
1158: # $currenthostid - Global variable that carries the name of the host
1159: # known as.
1.448 raeburn 1160: # $clientname - Global variable that carries the name of the host we're connected to.
1.217 foxr 1161: # Returns:
1162: # 1 - Ok to continue processing.
1163: # 0 - Program should exit.
1164: # Side effects:
1165: # Reply information is sent to the client.
1166: sub load_handler {
1167: my ($cmd, $tail, $replyfd) = @_;
1168:
1.463 foxr 1169:
1170:
1.217 foxr 1171: # Get the load average from /proc/loadavg and calculate it as a percentage of
1172: # the allowed load limit as set by the perl global variable lonLoadLim
1173:
1174: my $loadavg;
1175: my $loadfile=IO::File->new('/proc/loadavg');
1176:
1177: $loadavg=<$loadfile>;
1178: $loadavg =~ s/\s.*//g; # Extract the first field only.
1179:
1180: my $loadpercent=100*$loadavg/$perlvar{'lonLoadLim'};
1181:
1.387 albertel 1182: &Reply( $replyfd, \$loadpercent, "$cmd:$tail");
1.217 foxr 1183:
1184: return 1;
1185: }
1.263 albertel 1186: ®ister_handler("load", \&load_handler, 0, 1, 0);
1.217 foxr 1187:
1188: #
1189: # Process the userload request. This sub returns to the client the current
1190: # user load average. It can be invoked either by clients or managers.
1191: #
1192: # Parameters:
1193: # $cmd - the actual keyword that invoked us.
1194: # $tail - the tail of the request that invoked us.
1195: # $replyfd- File descriptor connected to the client
1196: # Implicit Inputs:
1197: # $currenthostid - Global variable that carries the name of the host
1198: # known as.
1.448 raeburn 1199: # $clientname - Global variable that carries the name of the host we're connected to.
1.217 foxr 1200: # Returns:
1201: # 1 - Ok to continue processing.
1202: # 0 - Program should exit
1203: # Implicit inputs:
1204: # whatever the userload() function requires.
1205: # Implicit outputs:
1206: # the reply is written to the client.
1207: #
1208: sub user_load_handler {
1209: my ($cmd, $tail, $replyfd) = @_;
1210:
1.365 albertel 1211: my $userloadpercent=&Apache::lonnet::userload();
1.387 albertel 1212: &Reply($replyfd, \$userloadpercent, "$cmd:$tail");
1.217 foxr 1213:
1214: return 1;
1215: }
1.263 albertel 1216: ®ister_handler("userload", \&user_load_handler, 0, 1, 0);
1.217 foxr 1217:
1.218 foxr 1218: # Process a request for the authorization type of a user:
1219: # (userauth).
1220: #
1221: # Parameters:
1222: # $cmd - the actual keyword that invoked us.
1223: # $tail - the tail of the request that invoked us.
1224: # $replyfd- File descriptor connected to the client
1225: # Returns:
1226: # 1 - Ok to continue processing.
1227: # 0 - Program should exit
1228: # Implicit outputs:
1229: # The user authorization type is written to the client.
1230: #
1231: sub user_authorization_type {
1232: my ($cmd, $tail, $replyfd) = @_;
1233:
1234: my $userinput = "$cmd:$tail";
1235:
1236: # Pull the domain and username out of the command tail.
1.222 foxr 1237: # and call get_auth_type to determine the authentication type.
1.218 foxr 1238:
1239: my ($udom,$uname)=split(/:/,$tail);
1.222 foxr 1240: my $result = &get_auth_type($udom, $uname);
1.218 foxr 1241: if($result eq "nouser") {
1242: &Failure( $replyfd, "unknown_user\n", $userinput);
1243: } else {
1244: #
1.222 foxr 1245: # We only want to pass the second field from get_auth_type
1.218 foxr 1246: # for ^krb.. otherwise we'll be handing out the encrypted
1247: # password for internals e.g.
1248: #
1249: my ($type,$otherinfo) = split(/:/,$result);
1250: if($type =~ /^krb/) {
1251: $type = $result;
1.269 raeburn 1252: } else {
1253: $type .= ':';
1254: }
1.387 albertel 1255: &Reply( $replyfd, \$type, $userinput);
1.218 foxr 1256: }
1257:
1258: return 1;
1259: }
1260: ®ister_handler("currentauth", \&user_authorization_type, 1, 1, 0);
1261:
1262: # Process a request by a manager to push a hosts or domain table
1263: # to us. We pick apart the command and pass it on to the subs
1264: # that already exist to do this.
1265: #
1266: # Parameters:
1267: # $cmd - the actual keyword that invoked us.
1268: # $tail - the tail of the request that invoked us.
1269: # $client - File descriptor connected to the client
1270: # Returns:
1271: # 1 - Ok to continue processing.
1272: # 0 - Program should exit
1273: # Implicit Output:
1274: # a reply is written to the client.
1275: sub push_file_handler {
1276: my ($cmd, $tail, $client) = @_;
1.412 foxr 1277: &Debug("In push file handler");
1.218 foxr 1278: my $userinput = "$cmd:$tail";
1279:
1280: # At this time we only know that the IP of our partner is a valid manager
1281: # the code below is a hook to do further authentication (e.g. to resolve
1282: # spoofing).
1283:
1284: my $cert = &GetCertificate($userinput);
1.412 foxr 1285: if(&ValidManager($cert)) {
1286: &Debug("Valid manager: $client");
1.218 foxr 1287:
1288: # Now presumably we have the bona fides of both the peer host and the
1289: # process making the request.
1290:
1291: my $reply = &PushFile($userinput);
1.387 albertel 1292: &Reply($client, \$reply, $userinput);
1.218 foxr 1293:
1294: } else {
1.412 foxr 1295: &logthis("push_file_handler $client is not valid");
1.218 foxr 1296: &Failure( $client, "refused\n", $userinput);
1297: }
1.219 foxr 1298: return 1;
1.218 foxr 1299: }
1300: ®ister_handler("pushfile", \&push_file_handler, 1, 0, 1);
1301:
1.399 raeburn 1302: # The du_handler routine should be considered obsolete and is retained
1303: # for communication with legacy servers. Please see the du2_handler.
1.243 banghart 1304: #
1.399 raeburn 1305: # du - list the disk usage of a directory recursively.
1.243 banghart 1306: #
1307: # note: stolen code from the ls file handler
1308: # under construction by Rick Banghart
1309: # .
1310: # Parameters:
1311: # $cmd - The command that dispatched us (du).
1312: # $ududir - The directory path to list... I'm not sure what this
1313: # is relative as things like ls:. return e.g.
1314: # no_such_dir.
1315: # $client - Socket open on the client.
1316: # Returns:
1317: # 1 - indicating that the daemon should not disconnect.
1318: # Side Effects:
1319: # The reply is written to $client.
1320: #
1321: sub du_handler {
1322: my ($cmd, $ududir, $client) = @_;
1.339 albertel 1323: ($ududir) = split(/:/,$ududir); # Make 'telnet' testing easier.
1.251 foxr 1324: my $userinput = "$cmd:$ududir";
1325:
1.245 albertel 1326: if ($ududir=~/\.\./ || $ududir!~m|^/home/httpd/|) {
1327: &Failure($client,"refused\n","$cmd:$ududir");
1328: return 1;
1329: }
1.249 foxr 1330: # Since $ududir could have some nasties in it,
1331: # we will require that ududir is a valid
1332: # directory. Just in case someone tries to
1333: # slip us a line like .;(cd /home/httpd rm -rf*)
1334: # etc.
1335: #
1336: if (-d $ududir) {
1.292 albertel 1337: my $total_size=0;
1338: my $code=sub {
1339: if ($_=~/\.\d+\./) { return;}
1340: if ($_=~/\.meta$/) { return;}
1.362 albertel 1341: if (-d $_) { return;}
1.292 albertel 1342: $total_size+=(stat($_))[7];
1343: };
1.295 raeburn 1344: chdir($ududir);
1.292 albertel 1345: find($code,$ududir);
1346: $total_size=int($total_size/1024);
1.387 albertel 1347: &Reply($client,\$total_size,"$cmd:$ududir");
1.249 foxr 1348: } else {
1.251 foxr 1349: &Failure($client, "bad_directory:$ududir\n","$cmd:$ududir");
1.249 foxr 1350: }
1.243 banghart 1351: return 1;
1352: }
1353: ®ister_handler("du", \&du_handler, 0, 1, 0);
1.218 foxr 1354:
1.399 raeburn 1355: # Please also see the du_handler, which is obsoleted by du2.
1356: # du2_handler differs from du_handler in that required path to directory
1357: # provided by &propath() is prepended in the handler instead of on the
1358: # client side.
1.239 foxr 1359: #
1.399 raeburn 1360: # du2 - list the disk usage of a directory recursively.
1361: #
1362: # Parameters:
1363: # $cmd - The command that dispatched us (du).
1364: # $tail - The tail of the request that invoked us.
1365: # $tail is a : separated list of the following:
1366: # - $ududir - directory path to list (before prepending)
1367: # - $getpropath = 1 if &propath() should prepend
1368: # - $uname - username to use for &propath or user dir
1369: # - $udom - domain to use for &propath or user dir
1370: # All are escaped.
1371: # $client - Socket open on the client.
1372: # Returns:
1373: # 1 - indicating that the daemon should not disconnect.
1374: # Side Effects:
1375: # The reply is written to $client.
1376: #
1377:
1378: sub du2_handler {
1379: my ($cmd, $tail, $client) = @_;
1380: my ($ududir,$getpropath,$uname,$udom) = map { &unescape($_) } (split(/:/, $tail));
1381: my $userinput = "$cmd:$tail";
1382: if (($ududir=~/\.\./) || (($ududir!~m|^/home/httpd/|) && (!$getpropath))) {
1383: &Failure($client,"refused\n","$cmd:$tail");
1384: return 1;
1385: }
1386: if ($getpropath) {
1387: if (($uname =~ /^$LONCAPA::match_name$/) && ($udom =~ /^$LONCAPA::match_domain$/)) {
1388: $ududir = &propath($udom,$uname).'/'.$ududir;
1389: } else {
1390: &Failure($client,"refused\n","$cmd:$tail");
1391: return 1;
1392: }
1393: }
1394: # Since $ududir could have some nasties in it,
1395: # we will require that ududir is a valid
1396: # directory. Just in case someone tries to
1397: # slip us a line like .;(cd /home/httpd rm -rf*)
1398: # etc.
1399: #
1400: if (-d $ududir) {
1401: my $total_size=0;
1402: my $code=sub {
1403: if ($_=~/\.\d+\./) { return;}
1404: if ($_=~/\.meta$/) { return;}
1405: if (-d $_) { return;}
1406: $total_size+=(stat($_))[7];
1407: };
1408: chdir($ududir);
1409: find($code,$ududir);
1410: $total_size=int($total_size/1024);
1411: &Reply($client,\$total_size,"$cmd:$ududir");
1412: } else {
1413: &Failure($client, "bad_directory:$ududir\n","$cmd:$tail");
1414: }
1415: return 1;
1416: }
1417: ®ister_handler("du2", \&du2_handler, 0, 1, 0);
1418:
1419: #
1420: # The ls_handler routine should be considered obsolete and is retained
1421: # for communication with legacy servers. Please see the ls3_handler.
1.280 matthew 1422: #
1.239 foxr 1423: # ls - list the contents of a directory. For each file in the
1424: # selected directory the filename followed by the full output of
1425: # the stat function is returned. The returned info for each
1426: # file are separated by ':'. The stat fields are separated by &'s.
1.489.2.23 raeburn 1427: #
1428: # If the requested path contains /../ or is:
1429: #
1430: # 1. for a directory, and the path does not begin with one of:
1.489.2.25 raeburn 1431: # (a) /home/httpd/html/res/<domain>
1.489.2.28 raeburn 1432: # (b) /home/httpd/html/userfiles/
1.489.2.23 raeburn 1433: # (c) /home/httpd/lonUsers/<domain>/<1>/<2>/<3>/<username>/userfiles
1434: # or is:
1435: #
1.489.2.28 raeburn 1436: # 2. for a file, and the path (after prepending) does not begin with one of:
1437: # (a) /home/httpd/lonUsers/<domain>/<1>/<2>/<3>/<username>/
1438: # (b) /home/httpd/html/res/<domain>/<username>/
1439: # (c) /home/httpd/html/userfiles/<domain>/<username>/
1.489.2.23 raeburn 1440: #
1441: # the response will be "refused".
1442: #
1.239 foxr 1443: # Parameters:
1444: # $cmd - The command that dispatched us (ls).
1445: # $ulsdir - The directory path to list... I'm not sure what this
1446: # is relative as things like ls:. return e.g.
1447: # no_such_dir.
1448: # $client - Socket open on the client.
1449: # Returns:
1450: # 1 - indicating that the daemon should not disconnect.
1451: # Side Effects:
1452: # The reply is written to $client.
1453: #
1454: sub ls_handler {
1.280 matthew 1455: # obsoleted by ls2_handler
1.239 foxr 1456: my ($cmd, $ulsdir, $client) = @_;
1457:
1458: my $userinput = "$cmd:$ulsdir";
1459:
1460: my $obs;
1461: my $rights;
1462: my $ulsout='';
1463: my $ulsfn;
1.489.2.23 raeburn 1464: if ($ulsdir =~m{/\.\./}) {
1465: &Failure($client,"refused\n",$userinput);
1466: return 1;
1467: }
1.239 foxr 1468: if (-e $ulsdir) {
1469: if(-d $ulsdir) {
1.489.2.28 raeburn 1470: unless (($ulsdir =~ m{^/home/httpd/html/(res/$LONCAPA::match_domain|userfiles/)}) ||
1471: ($ulsdir =~ m{^/home/httpd/lonUsers/$LONCAPA::match_domain(?:/[\w\-.@]){3}/$LONCAPA::match_name/userfiles})) {
1.489.2.23 raeburn 1472: &Failure($client,"refused\n",$userinput);
1473: return 1;
1474: }
1.239 foxr 1475: if (opendir(LSDIR,$ulsdir)) {
1476: while ($ulsfn=readdir(LSDIR)) {
1.291 albertel 1477: undef($obs);
1478: undef($rights);
1.239 foxr 1479: my @ulsstats=stat($ulsdir.'/'.$ulsfn);
1480: #We do some obsolete checking here
1481: if(-e $ulsdir.'/'.$ulsfn.".meta") {
1482: open(FILE, $ulsdir.'/'.$ulsfn.".meta");
1483: my @obsolete=<FILE>;
1484: foreach my $obsolete (@obsolete) {
1.301 www 1485: if($obsolete =~ m/(<obsolete>)(on|1)/) { $obs = 1; }
1.239 foxr 1486: if($obsolete =~ m|(<copyright>)(default)|) { $rights = 1; }
1487: }
1488: }
1489: $ulsout.=$ulsfn.'&'.join('&',@ulsstats);
1490: if($obs eq '1') { $ulsout.="&1"; }
1491: else { $ulsout.="&0"; }
1492: if($rights eq '1') { $ulsout.="&1:"; }
1493: else { $ulsout.="&0:"; }
1494: }
1495: closedir(LSDIR);
1496: }
1497: } else {
1.489.2.28 raeburn 1498: unless (($ulsdir =~ m{^/home/httpd/lonUsers/$LONCAPA::match_domain(?:/[\w\-.@]){3}/$LONCAPA::match_name/}) ||
1499: ($ulsdir =~ m{^/home/httpd/html/(?:res|userfiles)/$LONCAPA::match_domain/$LONCAPA::match_name/})) {
1.489.2.23 raeburn 1500: &Failure($client,"refused\n",$userinput);
1501: return 1;
1502: }
1.239 foxr 1503: my @ulsstats=stat($ulsdir);
1504: $ulsout.=$ulsfn.'&'.join('&',@ulsstats).':';
1505: }
1506: } else {
1507: $ulsout='no_such_dir';
1508: }
1509: if ($ulsout eq '') { $ulsout='empty'; }
1.387 albertel 1510: &Reply($client, \$ulsout, $userinput); # This supports debug logging.
1.239 foxr 1511:
1512: return 1;
1513:
1514: }
1515: ®ister_handler("ls", \&ls_handler, 0, 1, 0);
1516:
1.399 raeburn 1517: # The ls2_handler routine should be considered obsolete and is retained
1518: # for communication with legacy servers. Please see the ls3_handler.
1519: # Please also see the ls_handler, which was itself obsoleted by ls2.
1.280 matthew 1520: # ls2_handler differs from ls_handler in that it escapes its return
1521: # values before concatenating them together with ':'s.
1522: #
1523: # ls2 - list the contents of a directory. For each file in the
1524: # selected directory the filename followed by the full output of
1525: # the stat function is returned. The returned info for each
1526: # file are separated by ':'. The stat fields are separated by &'s.
1.489.2.23 raeburn 1527: #
1528: # If the requested path contains /../ or is:
1529: #
1530: # 1. for a directory, and the path does not begin with one of:
1.489.2.25 raeburn 1531: # (a) /home/httpd/html/res/<domain>
1.489.2.28 raeburn 1532: # (b) /home/httpd/html/userfiles/
1.489.2.23 raeburn 1533: # (c) /home/httpd/lonUsers/<domain>/<1>/<2>/<3>/<username>/userfiles
1534: # or is:
1535: #
1.489.2.28 raeburn 1536: # 2. for a file, and the path (after prepending) does not begin with one of:
1537: # (a) /home/httpd/lonUsers/<domain>/<1>/<2>/<3>/<username>/
1538: # (b) /home/httpd/html/res/<domain>/<username>/
1539: # (c) /home/httpd/html/userfiles/<domain>/<username>/
1.489.2.23 raeburn 1540: #
1541: # the response will be "refused".
1542: #
1.280 matthew 1543: # Parameters:
1544: # $cmd - The command that dispatched us (ls).
1545: # $ulsdir - The directory path to list... I'm not sure what this
1546: # is relative as things like ls:. return e.g.
1547: # no_such_dir.
1548: # $client - Socket open on the client.
1549: # Returns:
1550: # 1 - indicating that the daemon should not disconnect.
1551: # Side Effects:
1552: # The reply is written to $client.
1553: #
1554: sub ls2_handler {
1555: my ($cmd, $ulsdir, $client) = @_;
1556:
1557: my $userinput = "$cmd:$ulsdir";
1558:
1559: my $obs;
1560: my $rights;
1561: my $ulsout='';
1562: my $ulsfn;
1.489.2.23 raeburn 1563: if ($ulsdir =~m{/\.\./}) {
1564: &Failure($client,"refused\n",$userinput);
1565: return 1;
1566: }
1.280 matthew 1567: if (-e $ulsdir) {
1568: if(-d $ulsdir) {
1.489.2.28 raeburn 1569: unless (($ulsdir =~ m{^/home/httpd/html/(res/$LONCAPA::match_domain|userfiles/)}) ||
1570: ($ulsdir =~ m{^/home/httpd/lonUsers/$LONCAPA::match_domain(?:/[\w\-.@]){3}/$LONCAPA::match_name/userfiles})) {
1.489.2.23 raeburn 1571: &Failure($client,"refused\n","$userinput");
1572: return 1;
1573: }
1.280 matthew 1574: if (opendir(LSDIR,$ulsdir)) {
1575: while ($ulsfn=readdir(LSDIR)) {
1.291 albertel 1576: undef($obs);
1577: undef($rights);
1.280 matthew 1578: my @ulsstats=stat($ulsdir.'/'.$ulsfn);
1579: #We do some obsolete checking here
1580: if(-e $ulsdir.'/'.$ulsfn.".meta") {
1581: open(FILE, $ulsdir.'/'.$ulsfn.".meta");
1582: my @obsolete=<FILE>;
1583: foreach my $obsolete (@obsolete) {
1.301 www 1584: if($obsolete =~ m/(<obsolete>)(on|1)/) { $obs = 1; }
1.280 matthew 1585: if($obsolete =~ m|(<copyright>)(default)|) {
1586: $rights = 1;
1587: }
1588: }
1589: }
1590: my $tmp = $ulsfn.'&'.join('&',@ulsstats);
1591: if ($obs eq '1') { $tmp.="&1"; } else { $tmp.="&0"; }
1592: if ($rights eq '1') { $tmp.="&1"; } else { $tmp.="&0"; }
1593: $ulsout.= &escape($tmp).':';
1594: }
1595: closedir(LSDIR);
1596: }
1597: } else {
1.489.2.28 raeburn 1598: unless (($ulsdir =~ m{^/home/httpd/lonUsers/$LONCAPA::match_domain(?:/[\w\-.@]){3}/$LONCAPA::match_name/}) ||
1599: ($ulsdir =~ m{^/home/httpd/html/(?:res|userfiles)/$LONCAPA::match_domain/$LONCAPA::match_name/})) {
1.489.2.23 raeburn 1600: &Failure($client,"refused\n",$userinput);
1601: return 1;
1602: }
1.280 matthew 1603: my @ulsstats=stat($ulsdir);
1604: $ulsout.=$ulsfn.'&'.join('&',@ulsstats).':';
1605: }
1606: } else {
1607: $ulsout='no_such_dir';
1608: }
1609: if ($ulsout eq '') { $ulsout='empty'; }
1.387 albertel 1610: &Reply($client, \$ulsout, $userinput); # This supports debug logging.
1.280 matthew 1611: return 1;
1612: }
1613: ®ister_handler("ls2", \&ls2_handler, 0, 1, 0);
1.399 raeburn 1614: #
1615: # ls3 - list the contents of a directory. For each file in the
1616: # selected directory the filename followed by the full output of
1617: # the stat function is returned. The returned info for each
1618: # file are separated by ':'. The stat fields are separated by &'s.
1.489.2.23 raeburn 1619: #
1620: # If the requested path (after prepending) contains /../ or is:
1621: #
1622: # 1. for a directory, and the path does not begin with one of:
1.489.2.25 raeburn 1623: # (a) /home/httpd/html/res/<domain>
1.489.2.28 raeburn 1624: # (b) /home/httpd/html/userfiles/
1.489.2.23 raeburn 1625: # (c) /home/httpd/lonUsers/<domain>/<1>/<2>/<3>/<username>/userfiles
1.489.2.28 raeburn 1626: # (d) /home/httpd/html/priv/<domain> and client is the homeserver
1.489.2.23 raeburn 1627: #
1628: # or is:
1629: #
1.489.2.28 raeburn 1630: # 2. for a file, and the path (after prepending) does not begin with one of:
1631: # (a) /home/httpd/lonUsers/<domain>/<1>/<2>/<3>/<username>/
1632: # (b) /home/httpd/html/res/<domain>/<username>/
1633: # (c) /home/httpd/html/userfiles/<domain>/<username>/
1634: # (d) /home/httpd/html/priv/<domain>/<username>/ and client is the homeserver
1.489.2.23 raeburn 1635: #
1636: # the response will be "refused".
1637: #
1.399 raeburn 1638: # Parameters:
1639: # $cmd - The command that dispatched us (ls).
1640: # $tail - The tail of the request that invoked us.
1641: # $tail is a : separated list of the following:
1642: # - $ulsdir - directory path to list (before prepending)
1643: # - $getpropath = 1 if &propath() should prepend
1644: # - $getuserdir = 1 if path to user dir in lonUsers should
1645: # prepend
1646: # - $alternate_root - path to prepend
1647: # - $uname - username to use for &propath or user dir
1648: # - $udom - domain to use for &propath or user dir
1649: # All of these except $getpropath and &getuserdir are escaped.
1650: # no_such_dir.
1651: # $client - Socket open on the client.
1652: # Returns:
1653: # 1 - indicating that the daemon should not disconnect.
1654: # Side Effects:
1655: # The reply is written to $client.
1656: #
1657:
1658: sub ls3_handler {
1659: my ($cmd, $tail, $client) = @_;
1660: my $userinput = "$cmd:$tail";
1661: my ($ulsdir,$getpropath,$getuserdir,$alternate_root,$uname,$udom) =
1662: split(/:/,$tail);
1663: if (defined($ulsdir)) {
1664: $ulsdir = &unescape($ulsdir);
1665: }
1666: if (defined($alternate_root)) {
1667: $alternate_root = &unescape($alternate_root);
1668: }
1669: if (defined($uname)) {
1670: $uname = &unescape($uname);
1671: }
1672: if (defined($udom)) {
1673: $udom = &unescape($udom);
1674: }
1675:
1676: my $dir_root = $perlvar{'lonDocRoot'};
1.489.2.23 raeburn 1677: if (($getpropath) || ($getuserdir)) {
1.399 raeburn 1678: if (($uname =~ /^$LONCAPA::match_name$/) && ($udom =~ /^$LONCAPA::match_domain$/)) {
1679: $dir_root = &propath($udom,$uname);
1680: $dir_root =~ s/\/$//;
1681: } else {
1.489.2.23 raeburn 1682: &Failure($client,"refused\n",$userinput);
1.399 raeburn 1683: return 1;
1684: }
1.400 raeburn 1685: } elsif ($alternate_root ne '') {
1.399 raeburn 1686: $dir_root = $alternate_root;
1687: }
1.408 raeburn 1688: if (($dir_root ne '') && ($dir_root ne '/')) {
1.400 raeburn 1689: if ($ulsdir =~ /^\//) {
1690: $ulsdir = $dir_root.$ulsdir;
1691: } else {
1692: $ulsdir = $dir_root.'/'.$ulsdir;
1693: }
1.399 raeburn 1694: }
1.489.2.23 raeburn 1695: if ($ulsdir =~m{/\.\./}) {
1696: &Failure($client,"refused\n",$userinput);
1697: return 1;
1698: }
1699: my $islocal;
1700: my @machine_ids = &Apache::lonnet::current_machine_ids();
1701: if (grep(/^\Q$clientname\E$/,@machine_ids)) {
1702: $islocal = 1;
1703: }
1.399 raeburn 1704: my $obs;
1705: my $rights;
1706: my $ulsout='';
1707: my $ulsfn;
1708: if (-e $ulsdir) {
1709: if(-d $ulsdir) {
1.489.2.23 raeburn 1710: unless (($getpropath) || ($getuserdir) ||
1.489.2.28 raeburn 1711: ($ulsdir =~ m{^/home/httpd/html/(res/$LONCAPA::match_domain|userfiles/)}) ||
1712: ($ulsdir =~ m{^/home/httpd/lonUsers/$LONCAPA::match_domain(?:/[\w\-.@]){3}/$LONCAPA::match_name/userfiles}) ||
1713: (($ulsdir =~ m{^/home/httpd/html/priv/$LONCAPA::match_domain}) && ($islocal))) {
1.489.2.23 raeburn 1714: &Failure($client,"refused\n",$userinput);
1715: return 1;
1716: }
1.399 raeburn 1717: if (opendir(LSDIR,$ulsdir)) {
1718: while ($ulsfn=readdir(LSDIR)) {
1719: undef($obs);
1720: undef($rights);
1721: my @ulsstats=stat($ulsdir.'/'.$ulsfn);
1722: #We do some obsolete checking here
1723: if(-e $ulsdir.'/'.$ulsfn.".meta") {
1724: open(FILE, $ulsdir.'/'.$ulsfn.".meta");
1725: my @obsolete=<FILE>;
1726: foreach my $obsolete (@obsolete) {
1727: if($obsolete =~ m/(<obsolete>)(on|1)/) { $obs = 1; }
1728: if($obsolete =~ m|(<copyright>)(default)|) {
1729: $rights = 1;
1730: }
1731: }
1732: }
1733: my $tmp = $ulsfn.'&'.join('&',@ulsstats);
1734: if ($obs eq '1') { $tmp.="&1"; } else { $tmp.="&0"; }
1735: if ($rights eq '1') { $tmp.="&1"; } else { $tmp.="&0"; }
1736: $ulsout.= &escape($tmp).':';
1737: }
1738: closedir(LSDIR);
1739: }
1740: } else {
1.489.2.23 raeburn 1741: unless (($getpropath) || ($getuserdir) ||
1.489.2.28 raeburn 1742: ($ulsdir =~ m{^/home/httpd/lonUsers/$LONCAPA::match_domain(?:/[\w\-.@]){3}/$LONCAPA::match_name/}) ||
1743: ($ulsdir =~ m{^/home/httpd/html/(?:res|userfiles)/$LONCAPA::match_domain/$LONCAPA::match_name/}) ||
1744: (($ulsdir =~ m{^/home/httpd/html/priv/$LONCAPA::match_domain/$LONCAPA::match_name/}) && ($islocal))) {
1.489.2.23 raeburn 1745: &Failure($client,"refused\n",$userinput);
1746: return 1;
1747: }
1.399 raeburn 1748: my @ulsstats=stat($ulsdir);
1749: $ulsout.=$ulsfn.'&'.join('&',@ulsstats).':';
1750: }
1751: } else {
1752: $ulsout='no_such_dir';
1.400 raeburn 1753: }
1754: if ($ulsout eq '') { $ulsout='empty'; }
1755: &Reply($client, \$ulsout, $userinput); # This supports debug logging.
1756: return 1;
1.399 raeburn 1757: }
1758: ®ister_handler("ls3", \&ls3_handler, 0, 1, 0);
1.280 matthew 1759:
1.477 raeburn 1760: sub read_lonnet_global {
1761: my ($cmd,$tail,$client) = @_;
1762: my $userinput = "$cmd:$tail";
1763: my $requested = &Apache::lonnet::thaw_unescape($tail);
1764: my $result;
1.480 raeburn 1765: my %packagevars = (
1766: spareid => \%Apache::lonnet::spareid,
1767: perlvar => \%Apache::lonnet::perlvar,
1768: );
1769: my %limit_to = (
1770: perlvar => {
1771: lonOtherAuthen => 1,
1772: lonBalancer => 1,
1773: lonVersion => 1,
1774: lonSysEMail => 1,
1775: lonHostID => 1,
1776: lonRole => 1,
1777: lonDefDomain => 1,
1778: lonLoadLim => 1,
1779: lonUserLoadLim => 1,
1780: }
1781: );
1.477 raeburn 1782: if (ref($requested) eq 'HASH') {
1783: foreach my $what (keys(%{$requested})) {
1784: my $response;
1.480 raeburn 1785: my $items = {};
1786: if (exists($packagevars{$what})) {
1787: if (ref($limit_to{$what}) eq 'HASH') {
1788: foreach my $varname (keys(%{$packagevars{$what}})) {
1789: if ($limit_to{$what}{$varname}) {
1790: $items->{$varname} = $packagevars{$what}{$varname};
1791: }
1792: }
1793: } else {
1794: $items = $packagevars{$what};
1.477 raeburn 1795: }
1.480 raeburn 1796: if ($what eq 'perlvar') {
1797: if (!exists($packagevars{$what}{'lonBalancer'})) {
1.489.2.43 raeburn 1798: if ($dist =~ /^(centos|rhes|fedora|scientific|oracle|rocky|alma)/) {
1.480 raeburn 1799: my $othervarref=LONCAPA::Configuration::read_conf('httpd.conf');
1800: if (ref($othervarref) eq 'HASH') {
1801: $items->{'lonBalancer'} = $othervarref->{'lonBalancer'};
1802: }
1803: }
1804: }
1.477 raeburn 1805: }
1.480 raeburn 1806: $response = &Apache::lonnet::freeze_escape($items);
1.477 raeburn 1807: }
1.478 raeburn 1808: $result .= &escape($what).'='.$response.'&';
1.477 raeburn 1809: }
1810: }
1811: $result =~ s/\&$//;
1812: &Reply($client,\$result,$userinput);
1813: return 1;
1814: }
1815: ®ister_handler("readlonnetglobal", \&read_lonnet_global, 0, 1, 0);
1816:
1.479 raeburn 1817: sub server_devalidatecache_handler {
1818: my ($cmd,$tail,$client) = @_;
1819: my $userinput = "$cmd:$tail";
1.489.2.9 raeburn 1820: my $items = &unescape($tail);
1821: my @cached = split(/\&/,$items);
1822: foreach my $key (@cached) {
1823: if ($key =~ /:/) {
1824: my ($name,$id) = map { &unescape($_); } split(/:/,$key);
1825: &Apache::lonnet::devalidate_cache_new($name,$id);
1826: }
1827: }
1.479 raeburn 1828: my $result = 'ok';
1829: &Reply($client,\$result,$userinput);
1830: return 1;
1831: }
1.481 raeburn 1832: ®ister_handler("devalidatecache", \&server_devalidatecache_handler, 0, 1, 0);
1.479 raeburn 1833:
1.410 raeburn 1834: sub server_timezone_handler {
1835: my ($cmd,$tail,$client) = @_;
1836: my $userinput = "$cmd:$tail";
1837: my $timezone;
1838: my $clockfile = '/etc/sysconfig/clock'; # Fedora/CentOS/SuSE
1839: my $tzfile = '/etc/timezone'; # Debian/Ubuntu
1840: if (-e $clockfile) {
1841: if (open(my $fh,"<$clockfile")) {
1842: while (<$fh>) {
1843: next if (/^[\#\s]/);
1844: if (/^(?:TIME)?ZONE\s*=\s*['"]?\s*([\w\/]+)/) {
1845: $timezone = $1;
1846: last;
1847: }
1848: }
1849: close($fh);
1850: }
1851: } elsif (-e $tzfile) {
1852: if (open(my $fh,"<$tzfile")) {
1853: $timezone = <$fh>;
1854: close($fh);
1855: chomp($timezone);
1856: if ($timezone =~ m{^Etc/(\w+)$}) {
1857: $timezone = $1;
1858: }
1859: }
1860: }
1861: &Reply($client,\$timezone,$userinput); # This supports debug logging.
1862: return 1;
1863: }
1864: ®ister_handler("servertimezone", \&server_timezone_handler, 0, 1, 0);
1865:
1.413 raeburn 1866: sub server_loncaparev_handler {
1867: my ($cmd,$tail,$client) = @_;
1868: my $userinput = "$cmd:$tail";
1869: &Reply($client,\$perlvar{'lonVersion'},$userinput);
1870: return 1;
1871: }
1872: ®ister_handler("serverloncaparev", \&server_loncaparev_handler, 0, 1, 0);
1873:
1.448 raeburn 1874: sub server_homeID_handler {
1875: my ($cmd,$tail,$client) = @_;
1876: my $userinput = "$cmd:$tail";
1877: &Reply($client,\$perlvar{'lonHostID'},$userinput);
1878: return 1;
1879: }
1880: ®ister_handler("serverhomeID", \&server_homeID_handler, 0, 1, 0);
1881:
1.471 raeburn 1882: sub server_distarch_handler {
1883: my ($cmd,$tail,$client) = @_;
1884: my $userinput = "$cmd:$tail";
1885: my $reply = &distro_and_arch();
1886: &Reply($client,\$reply,$userinput);
1887: return 1;
1888: }
1889: ®ister_handler("serverdistarch", \&server_distarch_handler, 0, 1, 0);
1890:
1.218 foxr 1891: # Process a reinit request. Reinit requests that either
1892: # lonc or lond be reinitialized so that an updated
1893: # host.tab or domain.tab can be processed.
1894: #
1895: # Parameters:
1896: # $cmd - the actual keyword that invoked us.
1897: # $tail - the tail of the request that invoked us.
1898: # $client - File descriptor connected to the client
1899: # Returns:
1900: # 1 - Ok to continue processing.
1901: # 0 - Program should exit
1902: # Implicit output:
1903: # a reply is sent to the client.
1904: #
1905: sub reinit_process_handler {
1906: my ($cmd, $tail, $client) = @_;
1907:
1908: my $userinput = "$cmd:$tail";
1909:
1910: my $cert = &GetCertificate($userinput);
1911: if(&ValidManager($cert)) {
1912: chomp($userinput);
1913: my $reply = &ReinitProcess($userinput);
1.387 albertel 1914: &Reply( $client, \$reply, $userinput);
1.218 foxr 1915: } else {
1916: &Failure( $client, "refused\n", $userinput);
1917: }
1918: return 1;
1919: }
1920: ®ister_handler("reinit", \&reinit_process_handler, 1, 0, 1);
1921:
1922: # Process the editing script for a table edit operation.
1923: # the editing operation must be encrypted and requested by
1924: # a manager host.
1925: #
1926: # Parameters:
1927: # $cmd - the actual keyword that invoked us.
1928: # $tail - the tail of the request that invoked us.
1929: # $client - File descriptor connected to the client
1930: # Returns:
1931: # 1 - Ok to continue processing.
1932: # 0 - Program should exit
1933: # Implicit output:
1934: # a reply is sent to the client.
1935: #
1936: sub edit_table_handler {
1937: my ($command, $tail, $client) = @_;
1938:
1939: my $userinput = "$command:$tail";
1940:
1941: my $cert = &GetCertificate($userinput);
1942: if(&ValidManager($cert)) {
1943: my($filetype, $script) = split(/:/, $tail);
1944: if (($filetype eq "hosts") ||
1945: ($filetype eq "domain")) {
1946: if($script ne "") {
1947: &Reply($client, # BUGBUG - EditFile
1948: &EditFile($userinput), # could fail.
1949: $userinput);
1950: } else {
1951: &Failure($client,"refused\n",$userinput);
1952: }
1953: } else {
1954: &Failure($client,"refused\n",$userinput);
1955: }
1956: } else {
1957: &Failure($client,"refused\n",$userinput);
1958: }
1959: return 1;
1960: }
1.263 albertel 1961: ®ister_handler("edit", \&edit_table_handler, 1, 0, 1);
1.218 foxr 1962:
1.220 foxr 1963: #
1964: # Authenticate a user against the LonCAPA authentication
1965: # database. Note that there are several authentication
1966: # possibilities:
1967: # - unix - The user can be authenticated against the unix
1968: # password file.
1969: # - internal - The user can be authenticated against a purely
1970: # internal per user password file.
1971: # - kerberos - The user can be authenticated against either a kerb4 or kerb5
1972: # ticket granting authority.
1973: # - user - The person tailoring LonCAPA can supply a user authentication
1974: # mechanism that is per system.
1975: #
1976: # Parameters:
1977: # $cmd - The command that got us here.
1978: # $tail - Tail of the command (remaining parameters).
1979: # $client - File descriptor connected to client.
1980: # Returns
1981: # 0 - Requested to exit, caller should shut down.
1982: # 1 - Continue processing.
1983: # Implicit inputs:
1984: # The authentication systems describe above have their own forms of implicit
1985: # input into the authentication process that are described above.
1986: #
1987: sub authenticate_handler {
1988: my ($cmd, $tail, $client) = @_;
1989:
1990:
1991: # Regenerate the full input line
1992:
1993: my $userinput = $cmd.":".$tail;
1994:
1995: # udom - User's domain.
1996: # uname - Username.
1997: # upass - User's password.
1.396 raeburn 1998: # checkdefauth - Pass to validate_user() to try authentication
1999: # with default auth type(s) if no user account.
1.447 raeburn 2000: # clientcancheckhost - Passed by clients with functionality in lonauth.pm
2001: # to check if session can be hosted.
1.220 foxr 2002:
1.447 raeburn 2003: my ($udom, $uname, $upass, $checkdefauth, $clientcancheckhost)=split(/:/,$tail);
1.399 raeburn 2004: &Debug(" Authenticate domain = $udom, user = $uname, password = $upass, checkdefauth = $checkdefauth");
1.220 foxr 2005: chomp($upass);
2006: $upass=&unescape($upass);
2007:
1.396 raeburn 2008: my $pwdcorrect = &validate_user($udom,$uname,$upass,$checkdefauth);
1.220 foxr 2009: if($pwdcorrect) {
1.447 raeburn 2010: my $canhost = 1;
2011: unless ($clientcancheckhost) {
1.448 raeburn 2012: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
2013: my $uint_dom = &Apache::lonnet::internet_dom($uprimary_id);
1.452 raeburn 2014: my @intdoms;
2015: my $internet_names = &Apache::lonnet::get_internet_names($clientname);
2016: if (ref($internet_names) eq 'ARRAY') {
2017: @intdoms = @{$internet_names};
2018: }
1.448 raeburn 2019: unless ($uint_dom ne '' && grep(/^\Q$uint_dom\E$/,@intdoms)) {
1.447 raeburn 2020: my ($remote,$hosted);
2021: my $remotesession = &get_usersession_config($udom,'remotesession');
2022: if (ref($remotesession) eq 'HASH') {
1.489.2.32 raeburn 2023: $remote = $remotesession->{'remote'};
1.447 raeburn 2024: }
1.448 raeburn 2025: my $hostedsession = &get_usersession_config($clienthomedom,'hostedsession');
1.447 raeburn 2026: if (ref($hostedsession) eq 'HASH') {
2027: $hosted = $hostedsession->{'hosted'};
2028: }
1.449 raeburn 2029: my $loncaparev = $clientversion;
2030: if ($loncaparev eq '') {
2031: $loncaparev = $Apache::lonnet::loncaparevs{$clientname};
2032: }
1.448 raeburn 2033: $canhost = &Apache::lonnet::can_host_session($udom,$clientname,
1.449 raeburn 2034: $loncaparev,
1.447 raeburn 2035: $remote,$hosted);
2036: }
2037: }
2038: if ($canhost) {
2039: &Reply( $client, "authorized\n", $userinput);
2040: } else {
2041: &Reply( $client, "not_allowed_to_host\n", $userinput);
2042: }
1.220 foxr 2043: #
2044: # Bad credentials: Failed to authorize
2045: #
2046: } else {
2047: &Failure( $client, "non_authorized\n", $userinput);
2048: }
2049:
2050: return 1;
2051: }
1.263 albertel 2052: ®ister_handler("auth", \&authenticate_handler, 1, 1, 0);
1.214 foxr 2053:
1.222 foxr 2054: #
2055: # Change a user's password. Note that this function is complicated by
2056: # the fact that a user may be authenticated in more than one way:
2057: # At present, we are not able to change the password for all types of
2058: # authentication methods. Only for:
2059: # unix - unix password or shadow passoword style authentication.
2060: # local - Locally written authentication mechanism.
2061: # For now, kerb4 and kerb5 password changes are not supported and result
2062: # in an error.
2063: # FUTURE WORK:
2064: # Support kerberos passwd changes?
2065: # Parameters:
2066: # $cmd - The command that got us here.
2067: # $tail - Tail of the command (remaining parameters).
2068: # $client - File descriptor connected to client.
2069: # Returns
2070: # 0 - Requested to exit, caller should shut down.
2071: # 1 - Continue processing.
2072: # Implicit inputs:
2073: # The authentication systems describe above have their own forms of implicit
2074: # input into the authentication process that are described above.
2075: sub change_password_handler {
2076: my ($cmd, $tail, $client) = @_;
2077:
2078: my $userinput = $cmd.":".$tail; # Reconstruct client's string.
2079:
2080: #
2081: # udom - user's domain.
2082: # uname - Username.
2083: # upass - Current password.
2084: # npass - New password.
1.346 raeburn 2085: # context - Context in which this was called
2086: # (preferences or reset_by_email).
1.428 raeburn 2087: # lonhost - HostID of server where request originated
1.222 foxr 2088:
1.428 raeburn 2089: my ($udom,$uname,$upass,$npass,$context,$lonhost)=split(/:/,$tail);
1.222 foxr 2090:
2091: $upass=&unescape($upass);
2092: $npass=&unescape($npass);
2093: &Debug("Trying to change password for $uname");
2094:
2095: # First require that the user can be authenticated with their
1.346 raeburn 2096: # old password unless context was 'reset_by_email':
2097:
1.428 raeburn 2098: my ($validated,$failure);
1.346 raeburn 2099: if ($context eq 'reset_by_email') {
1.428 raeburn 2100: if ($lonhost eq '') {
2101: $failure = 'invalid_client';
2102: } else {
2103: $validated = 1;
2104: }
1.346 raeburn 2105: } else {
2106: $validated = &validate_user($udom, $uname, $upass);
2107: }
1.222 foxr 2108: if($validated) {
2109: my $realpasswd = &get_auth_type($udom, $uname); # Defined since authd.
2110: my ($howpwd,$contentpwd)=split(/:/,$realpasswd);
1.489.2.33 raeburn 2111: my $notunique;
1.222 foxr 2112: if ($howpwd eq 'internal') {
2113: &Debug("internal auth");
1.489.2.21 raeburn 2114: my $ncpass = &hash_passwd($udom,$npass);
1.489.2.33 raeburn 2115: my (undef,$method,@rest) = split(/!/,$contentpwd);
2116: if ($method eq 'bcrypt') {
2117: my %passwdconf = &Apache::lonnet::get_passwdconf($udom);
2118: if (($passwdconf{'numsaved'}) && ($passwdconf{'numsaved'} =~ /^\d+$/)) {
2119: my @oldpasswds;
2120: my $userpath = &propath($udom,$uname);
2121: my $fullpath = $userpath.'/oldpasswds';
2122: if (-d $userpath) {
2123: my @oldfiles;
2124: if (-e $fullpath) {
2125: if (opendir(my $dir,$fullpath)) {
2126: (@oldfiles) = grep(/^\d+$/,readdir($dir));
2127: closedir($dir);
2128: }
2129: if (@oldfiles) {
2130: @oldfiles = sort { $b <=> $a } (@oldfiles);
2131: my $numremoved = 0;
2132: for (my $i=0; $i<@oldfiles; $i++) {
2133: if ($i>=$passwdconf{'numsaved'}) {
2134: if (-f "$fullpath/$oldfiles[$i]") {
2135: if (unlink("$fullpath/$oldfiles[$i]")) {
2136: $numremoved ++;
2137: }
2138: }
2139: } elsif (open(my $fh,'<',"$fullpath/$oldfiles[$i]")) {
2140: while (my $line = <$fh>) {
2141: push(@oldpasswds,$line);
2142: }
2143: close($fh);
2144: }
2145: }
2146: if ($numremoved) {
2147: &logthis("unlinked $numremoved old password files for $uname:$udom");
2148: }
2149: }
2150: }
2151: push(@oldpasswds,$contentpwd);
2152: foreach my $item (@oldpasswds) {
2153: my (undef,$method,@rest) = split(/!/,$item);
2154: if ($method eq 'bcrypt') {
2155: my $result = &hash_passwd($udom,$npass,@rest);
2156: if ($result eq $item) {
2157: $notunique = 1;
2158: last;
2159: }
2160: }
2161: }
2162: unless ($notunique) {
2163: unless (-e $fullpath) {
2164: if (&mkpath("$fullpath/")) {
2165: chmod(0700,$fullpath);
2166: }
2167: }
2168: if (-d $fullpath) {
2169: my $now = time;
2170: if (open(my $fh,'>',"$fullpath/$now")) {
2171: print $fh $contentpwd;
2172: close($fh);
2173: chmod(0400,"$fullpath/$now");
2174: }
2175: }
2176: }
2177: }
2178: }
2179: }
2180: if ($notunique) {
2181: my $msg="Result of password change for $uname:$udom - password matches one used before";
2182: if ($lonhost) {
2183: $msg .= " - request originated from: $lonhost";
2184: }
2185: &logthis($msg);
2186: &Reply($client, "prioruse\n", $userinput);
2187: } elsif (&rewrite_password_file($udom, $uname, "internal:$ncpass")) {
1.428 raeburn 2188: my $msg="Result of password change for $uname: pwchange_success";
2189: if ($lonhost) {
2190: $msg .= " - request originated from: $lonhost";
2191: }
2192: &logthis($msg);
1.489.2.21 raeburn 2193: &update_passwd_history($uname,$udom,$howpwd,$context);
1.222 foxr 2194: &Reply($client, "ok\n", $userinput);
2195: } else {
2196: &logthis("Unable to open $uname passwd "
2197: ."to change password");
2198: &Failure( $client, "non_authorized\n",$userinput);
2199: }
1.346 raeburn 2200: } elsif ($howpwd eq 'unix' && $context ne 'reset_by_email') {
1.287 foxr 2201: my $result = &change_unix_password($uname, $npass);
1.489.2.21 raeburn 2202: if ($result eq 'ok') {
2203: &update_passwd_history($uname,$udom,$howpwd,$context);
2204: }
1.222 foxr 2205: &logthis("Result of password change for $uname: ".
1.287 foxr 2206: $result);
1.387 albertel 2207: &Reply($client, \$result, $userinput);
1.222 foxr 2208: } else {
2209: # this just means that the current password mode is not
2210: # one we know how to change (e.g the kerberos auth modes or
2211: # locally written auth handler).
2212: #
2213: &Failure( $client, "auth_mode_error\n", $userinput);
2214: }
1.224 foxr 2215: } else {
1.428 raeburn 2216: if ($failure eq '') {
2217: $failure = 'non_authorized';
2218: }
2219: &Failure( $client, "$failure\n", $userinput);
1.222 foxr 2220: }
2221:
2222: return 1;
2223: }
1.263 albertel 2224: ®ister_handler("passwd", \&change_password_handler, 1, 1, 0);
1.222 foxr 2225:
1.489.2.21 raeburn 2226: sub hash_passwd {
2227: my ($domain,$plainpass,@rest) = @_;
2228: my ($salt,$cost);
2229: if (@rest) {
2230: $cost = $rest[0];
2231: # salt is first 22 characters, base-64 encoded by bcrypt
2232: my $plainsalt = substr($rest[1],0,22);
2233: $salt = Crypt::Eksblowfish::Bcrypt::de_base64($plainsalt);
2234: } else {
1.489.2.26 raeburn 2235: my %domdefaults = &Apache::lonnet::get_domain_defaults($domain);
2236: my $defaultcost = $domdefaults{'intauth_cost'};
1.489.2.21 raeburn 2237: if (($defaultcost eq '') || ($defaultcost =~ /D/)) {
2238: $cost = 10;
2239: } else {
2240: $cost = $defaultcost;
2241: }
2242: # Generate random 16-octet base64 salt
2243: $salt = "";
2244: $salt .= pack("C", int rand(256)) for 1..16;
2245: }
2246: my $hash = &Crypt::Eksblowfish::Bcrypt::bcrypt_hash({
2247: key_nul => 1,
2248: cost => $cost,
2249: salt => $salt,
2250: }, Digest::SHA::sha512(Encode::encode('UTF-8',$plainpass)));
2251:
2252: my $result = join("!", "", "bcrypt", sprintf("%02d",$cost),
2253: &Crypt::Eksblowfish::Bcrypt::en_base64($salt).
2254: &Crypt::Eksblowfish::Bcrypt::en_base64($hash));
2255: return $result;
2256: }
2257:
1.225 foxr 2258: #
2259: # Create a new user. User in this case means a lon-capa user.
2260: # The user must either already exist in some authentication realm
2261: # like kerberos or the /etc/passwd. If not, a user completely local to
2262: # this loncapa system is created.
2263: #
2264: # Parameters:
2265: # $cmd - The command that got us here.
2266: # $tail - Tail of the command (remaining parameters).
2267: # $client - File descriptor connected to client.
2268: # Returns
2269: # 0 - Requested to exit, caller should shut down.
2270: # 1 - Continue processing.
2271: # Implicit inputs:
2272: # The authentication systems describe above have their own forms of implicit
2273: # input into the authentication process that are described above.
2274: sub add_user_handler {
2275:
2276: my ($cmd, $tail, $client) = @_;
2277:
2278:
2279: my ($udom,$uname,$umode,$npass)=split(/:/,$tail);
2280: my $userinput = $cmd.":".$tail; # Reconstruct the full request line.
2281:
2282: &Debug("cmd =".$cmd." $udom =".$udom." uname=".$uname);
2283:
2284:
2285: if($udom eq $currentdomainid) { # Reject new users for other domains...
2286:
2287: my $oldumask=umask(0077);
2288: chomp($npass);
2289: $npass=&unescape($npass);
2290: my $passfilename = &password_path($udom, $uname);
2291: &Debug("Password file created will be:".$passfilename);
2292: if (-e $passfilename) {
2293: &Failure( $client, "already_exists\n", $userinput);
2294: } else {
2295: my $fperror='';
1.264 albertel 2296: if (!&mkpath($passfilename)) {
2297: $fperror="error: ".($!+0)." mkdir failed while attempting "
2298: ."makeuser";
1.225 foxr 2299: }
2300: unless ($fperror) {
1.489.2.21 raeburn 2301: my $result=&make_passwd_file($uname,$udom,$umode,$npass,
2302: $passfilename,'makeuser');
1.390 raeburn 2303: &Reply($client,\$result, $userinput); #BUGBUG - could be fail
1.225 foxr 2304: } else {
1.387 albertel 2305: &Failure($client, \$fperror, $userinput);
1.225 foxr 2306: }
2307: }
2308: umask($oldumask);
2309: } else {
2310: &Failure($client, "not_right_domain\n",
2311: $userinput); # Even if we are multihomed.
2312:
2313: }
2314: return 1;
2315:
2316: }
2317: ®ister_handler("makeuser", \&add_user_handler, 1, 1, 0);
2318:
2319: #
2320: # Change the authentication method of a user. Note that this may
2321: # also implicitly change the user's password if, for example, the user is
2322: # joining an existing authentication realm. Known authentication realms at
2323: # this time are:
2324: # internal - Purely internal password file (only loncapa knows this user)
2325: # local - Institutionally written authentication module.
2326: # unix - Unix user (/etc/passwd with or without /etc/shadow).
2327: # kerb4 - kerberos version 4
2328: # kerb5 - kerberos version 5
2329: #
2330: # Parameters:
2331: # $cmd - The command that got us here.
2332: # $tail - Tail of the command (remaining parameters).
2333: # $client - File descriptor connected to client.
2334: # Returns
2335: # 0 - Requested to exit, caller should shut down.
2336: # 1 - Continue processing.
2337: # Implicit inputs:
2338: # The authentication systems describe above have their own forms of implicit
2339: # input into the authentication process that are described above.
1.287 foxr 2340: # NOTE:
2341: # This is also used to change the authentication credential values (e.g. passwd).
2342: #
1.225 foxr 2343: #
2344: sub change_authentication_handler {
2345:
2346: my ($cmd, $tail, $client) = @_;
2347:
2348: my $userinput = "$cmd:$tail"; # Reconstruct user input.
2349:
2350: my ($udom,$uname,$umode,$npass)=split(/:/,$tail);
2351: &Debug("cmd = ".$cmd." domain= ".$udom."uname =".$uname." umode= ".$umode);
2352: if ($udom ne $currentdomainid) {
2353: &Failure( $client, "not_right_domain\n", $client);
2354: } else {
2355:
2356: chomp($npass);
2357:
2358: $npass=&unescape($npass);
1.261 foxr 2359: my $oldauth = &get_auth_type($udom, $uname); # Get old auth info.
1.225 foxr 2360: my $passfilename = &password_path($udom, $uname);
2361: if ($passfilename) { # Not allowed to create a new user!!
1.287 foxr 2362: # If just changing the unix passwd. need to arrange to run
1.489.2.8 raeburn 2363: # passwd since otherwise make_passwd_file will fail as
2364: # creation of unix authenticated users is no longer supported
2365: # except from the command line, when running make_domain_coordinator.pl
1.287 foxr 2366:
2367: if(($oldauth =~/^unix/) && ($umode eq "unix")) {
2368: my $result = &change_unix_password($uname, $npass);
2369: &logthis("Result of password change for $uname: ".$result);
2370: if ($result eq "ok") {
1.489.2.21 raeburn 2371: &update_passwd_history($uname,$udom,$umode,'changeuserauth');
1.390 raeburn 2372: &Reply($client, \$result);
1.288 albertel 2373: } else {
1.387 albertel 2374: &Failure($client, \$result);
1.287 foxr 2375: }
1.288 albertel 2376: } else {
1.489.2.21 raeburn 2377: my $result=&make_passwd_file($uname,$udom,$umode,$npass,
2378: $passfilename,'changeuserauth');
1.287 foxr 2379: #
2380: # If the current auth mode is internal, and the old auth mode was
2381: # unix, or krb*, and the user is an author for this domain,
2382: # re-run manage_permissions for that role in order to be able
2383: # to take ownership of the construction space back to www:www
2384: #
1.489.2.8 raeburn 2385:
2386:
1.387 albertel 2387: &Reply($client, \$result, $userinput);
1.261 foxr 2388: }
2389:
2390:
1.225 foxr 2391: } else {
1.251 foxr 2392: &Failure($client, "non_authorized\n", $userinput); # Fail the user now.
1.225 foxr 2393: }
2394: }
2395: return 1;
2396: }
2397: ®ister_handler("changeuserauth", \&change_authentication_handler, 1,1, 0);
2398:
1.489.2.21 raeburn 2399: sub update_passwd_history {
2400: my ($uname,$udom,$umode,$context) = @_;
2401: my $proname=&propath($udom,$uname);
2402: my $now = time;
2403: if (open(my $fh,">>$proname/passwd.log")) {
2404: print $fh "$now:$umode:$context\n";
2405: close($fh);
2406: }
2407: return;
2408: }
2409:
1.489.2.43.2. (raeburn 2410:): sub inst_unamemap_check {
2411:): my ($cmd, $tail, $client) = @_;
2412:): my $userinput = "$cmd:$tail";
2413:): my %rulecheck;
2414:): my $outcome;
2415:): my ($udom,$uname,@rules) = split(/:/,$tail);
2416:): $udom = &unescape($udom);
2417:): $uname = &unescape($uname);
2418:): @rules = map {&unescape($_);} (@rules);
2419:): eval {
2420:): local($SIG{__DIE__})='DEFAULT';
2421:): $outcome = &localenroll::unamemap_check($udom,$uname,\@rules,\%rulecheck);
2422:): };
2423:): if (!$@) {
2424:): if ($outcome eq 'ok') {
2425:): my $result='';
2426:): foreach my $key (keys(%rulecheck)) {
2427:): $result.=&escape($key).'='.&Apache::lonnet::freeze_escape($rulecheck{$key}).'&';
2428:): }
2429:): &Reply($client,\$result,$userinput);
2430:): } else {
2431:): &Reply($client,"error\n", $userinput);
2432:): }
2433:): } else {
2434:): &Failure($client,"unknown_cmd\n",$userinput);
2435:): }
2436:): }
2437:): ®ister_handler("instunamemapcheck",\&inst_unamemap_check,0,1,0);
2438:):
2439:):
1.225 foxr 2440: #
2441: # Determines if this is the home server for a user. The home server
2442: # for a user will have his/her lon-capa passwd file. Therefore all we need
2443: # to do is determine if this file exists.
2444: #
2445: # Parameters:
2446: # $cmd - The command that got us here.
2447: # $tail - Tail of the command (remaining parameters).
2448: # $client - File descriptor connected to client.
2449: # Returns
2450: # 0 - Requested to exit, caller should shut down.
2451: # 1 - Continue processing.
2452: # Implicit inputs:
2453: # The authentication systems describe above have their own forms of implicit
2454: # input into the authentication process that are described above.
2455: #
2456: sub is_home_handler {
2457: my ($cmd, $tail, $client) = @_;
2458:
2459: my $userinput = "$cmd:$tail";
2460:
2461: my ($udom,$uname)=split(/:/,$tail);
2462: chomp($uname);
2463: my $passfile = &password_filename($udom, $uname);
2464: if($passfile) {
2465: &Reply( $client, "found\n", $userinput);
2466: } else {
2467: &Failure($client, "not_found\n", $userinput);
2468: }
2469: return 1;
2470: }
2471: ®ister_handler("home", \&is_home_handler, 0,1,0);
2472:
2473: #
1.434 www 2474: # Process an update request for a resource.
2475: # A resource has been modified that we hold a subscription to.
1.225 foxr 2476: # If the resource is not local, then we must update, or at least invalidate our
2477: # cached copy of the resource.
2478: # Parameters:
2479: # $cmd - The command that got us here.
2480: # $tail - Tail of the command (remaining parameters).
2481: # $client - File descriptor connected to client.
2482: # Returns
2483: # 0 - Requested to exit, caller should shut down.
2484: # 1 - Continue processing.
2485: # Implicit inputs:
2486: # The authentication systems describe above have their own forms of implicit
2487: # input into the authentication process that are described above.
2488: #
2489: sub update_resource_handler {
2490:
2491: my ($cmd, $tail, $client) = @_;
2492:
2493: my $userinput = "$cmd:$tail";
2494:
2495: my $fname= $tail; # This allows interactive testing
2496:
2497:
2498: my $ownership=ishome($fname);
2499: if ($ownership eq 'not_owner') {
2500: if (-e $fname) {
1.434 www 2501: # Delete preview file, if exists
2502: unlink("$fname.tmp");
2503: # Get usage stats
1.225 foxr 2504: my ($dev,$ino,$mode,$nlink,$uid,$gid,$rdev,$size,
2505: $atime,$mtime,$ctime,$blksize,$blocks)=stat($fname);
2506: my $now=time;
2507: my $since=$now-$atime;
1.434 www 2508: # If the file has not been used within lonExpire seconds,
2509: # unsubscribe from it and delete local copy
1.225 foxr 2510: if ($since>$perlvar{'lonExpire'}) {
1.365 albertel 2511: my $reply=&Apache::lonnet::reply("unsub:$fname","$clientname");
1.308 albertel 2512: &devalidate_meta_cache($fname);
1.225 foxr 2513: unlink("$fname");
1.334 albertel 2514: unlink("$fname.meta");
1.225 foxr 2515: } else {
1.434 www 2516: # Yes, this is in active use. Get a fresh copy. Since it might be in
2517: # very active use and huge (like a movie), copy it to "in.transfer" filename first.
1.225 foxr 2518: my $transname="$fname.in.transfer";
1.365 albertel 2519: my $remoteurl=&Apache::lonnet::reply("sub:$fname","$clientname");
1.225 foxr 2520: my $response;
1.455 www 2521: # FIXME: cannot replicate files that take more than two minutes to transfer?
2522: # alarm(120);
2523: # FIXME: this should use the LWP mechanism, not internal alarms.
2524: alarm(1200);
1.225 foxr 2525: {
2526: my $ua=new LWP::UserAgent;
2527: my $request=new HTTP::Request('GET',"$remoteurl");
2528: $response=$ua->request($request,$transname);
2529: }
2530: alarm(0);
2531: if ($response->is_error()) {
1.489.2.30 raeburn 2532: my $reply=&Apache::lonnet::reply("unsub:$fname","$clientname");
2533: &devalidate_meta_cache($fname);
2534: if (-e $transname) {
2535: unlink($transname);
2536: }
2537: unlink($fname);
1.225 foxr 2538: my $message=$response->status_line;
2539: &logthis("LWP GET: $message for $fname ($remoteurl)");
2540: } else {
2541: if ($remoteurl!~/\.meta$/) {
1.455 www 2542: # FIXME: isn't there an internal LWP mechanism for this?
1.225 foxr 2543: alarm(120);
2544: {
2545: my $ua=new LWP::UserAgent;
2546: my $mrequest=new HTTP::Request('GET',$remoteurl.'.meta');
2547: my $mresponse=$ua->request($mrequest,$fname.'.meta');
2548: if ($mresponse->is_error()) {
2549: unlink($fname.'.meta');
2550: }
2551: }
2552: alarm(0);
2553: }
1.434 www 2554: # we successfully transfered, copy file over to real name
1.225 foxr 2555: rename($transname,$fname);
1.308 albertel 2556: &devalidate_meta_cache($fname);
1.225 foxr 2557: }
2558: }
2559: &Reply( $client, "ok\n", $userinput);
2560: } else {
2561: &Failure($client, "not_found\n", $userinput);
2562: }
2563: } else {
2564: &Failure($client, "rejected\n", $userinput);
2565: }
2566: return 1;
2567: }
2568: ®ister_handler("update", \&update_resource_handler, 0 ,1, 0);
2569:
1.308 albertel 2570: sub devalidate_meta_cache {
2571: my ($url) = @_;
2572: use Cache::Memcached;
2573: my $memcache = new Cache::Memcached({'servers'=>['127.0.0.1:11211']});
1.365 albertel 2574: $url = &Apache::lonnet::declutter($url);
1.308 albertel 2575: $url =~ s-\.meta$--;
2576: my $id = &escape('meta:'.$url);
2577: $memcache->delete($id);
2578: }
2579:
1.225 foxr 2580: #
1.226 foxr 2581: # Fetch a user file from a remote server to the user's home directory
2582: # userfiles subdir.
1.225 foxr 2583: # Parameters:
2584: # $cmd - The command that got us here.
2585: # $tail - Tail of the command (remaining parameters).
2586: # $client - File descriptor connected to client.
2587: # Returns
2588: # 0 - Requested to exit, caller should shut down.
2589: # 1 - Continue processing.
2590: #
2591: sub fetch_user_file_handler {
2592:
2593: my ($cmd, $tail, $client) = @_;
2594:
2595: my $userinput = "$cmd:$tail";
2596: my $fname = $tail;
1.232 foxr 2597: my ($udom,$uname,$ufile) = ($fname =~ m|^([^/]+)/([^/]+)/(.+)$|);
1.225 foxr 2598: my $udir=&propath($udom,$uname).'/userfiles';
2599: unless (-e $udir) {
2600: mkdir($udir,0770);
2601: }
1.232 foxr 2602: Debug("fetch user file for $fname");
1.225 foxr 2603: if (-e $udir) {
2604: $ufile=~s/^[\.\~]+//;
1.232 foxr 2605:
2606: # IF necessary, create the path right down to the file.
2607: # Note that any regular files in the way of this path are
2608: # wiped out to deal with some earlier folly of mine.
2609:
1.267 raeburn 2610: if (!&mkpath($udir.'/'.$ufile)) {
1.264 albertel 2611: &Failure($client, "unable_to_create\n", $userinput);
1.232 foxr 2612: }
2613:
1.225 foxr 2614: my $destname=$udir.'/'.$ufile;
2615: my $transname=$udir.'/'.$ufile.'.in.transit';
1.476 raeburn 2616: my $clientprotocol=$Apache::lonnet::protocol{$clientname};
2617: $clientprotocol = 'http' if ($clientprotocol ne 'https');
1.486 raeburn 2618: my $clienthost = &Apache::lonnet::hostname($clientname);
2619: my $remoteurl=$clientprotocol.'://'.$clienthost.'/userfiles/'.$fname;
1.225 foxr 2620: my $response;
1.232 foxr 2621: Debug("Remote URL : $remoteurl Transfername $transname Destname: $destname");
1.225 foxr 2622: alarm(120);
2623: {
2624: my $ua=new LWP::UserAgent;
2625: my $request=new HTTP::Request('GET',"$remoteurl");
2626: $response=$ua->request($request,$transname);
2627: }
2628: alarm(0);
2629: if ($response->is_error()) {
2630: unlink($transname);
2631: my $message=$response->status_line;
2632: &logthis("LWP GET: $message for $fname ($remoteurl)");
2633: &Failure($client, "failed\n", $userinput);
2634: } else {
1.232 foxr 2635: Debug("Renaming $transname to $destname");
1.225 foxr 2636: if (!rename($transname,$destname)) {
2637: &logthis("Unable to move $transname to $destname");
2638: unlink($transname);
2639: &Failure($client, "failed\n", $userinput);
2640: } else {
1.489.2.2 raeburn 2641: if ($fname =~ /^default.+\.(page|sequence)$/) {
2642: my ($major,$minor) = split(/\./,$clientversion);
2643: if (($major < 2) || ($major == 2 && $minor < 11)) {
2644: my $now = time;
2645: &Apache::lonnet::do_cache_new('crschange',$udom.'_'.$uname,$now,600);
2646: my $key = &escape('internal.contentchange');
2647: my $what = "$key=$now";
2648: my $hashref = &tie_user_hash($udom,$uname,'environment',
2649: &GDBM_WRCREAT(),"P",$what);
2650: if ($hashref) {
2651: $hashref->{$key}=$now;
2652: if (!&untie_user_hash($hashref)) {
2653: &logthis("error: ".($!+0)." untie (GDBM) failed ".
2654: "when updating internal.contentchange");
2655: }
2656: }
2657: }
2658: }
1.225 foxr 2659: &Reply($client, "ok\n", $userinput);
2660: }
2661: }
2662: } else {
2663: &Failure($client, "not_home\n", $userinput);
2664: }
2665: return 1;
2666: }
2667: ®ister_handler("fetchuserfile", \&fetch_user_file_handler, 0, 1, 0);
2668:
1.226 foxr 2669: #
2670: # Remove a file from a user's home directory userfiles subdirectory.
2671: # Parameters:
2672: # cmd - the Lond request keyword that got us here.
2673: # tail - the part of the command past the keyword.
2674: # client- File descriptor connected with the client.
2675: #
2676: # Returns:
2677: # 1 - Continue processing.
2678: sub remove_user_file_handler {
2679: my ($cmd, $tail, $client) = @_;
2680:
2681: my ($fname) = split(/:/, $tail); # Get rid of any tailing :'s lonc may have sent.
2682:
2683: my ($udom,$uname,$ufile) = ($fname =~ m|^([^/]+)/([^/]+)/(.+)$|);
2684: if ($ufile =~m|/\.\./|) {
2685: # any files paths with /../ in them refuse
2686: # to deal with
2687: &Failure($client, "refused\n", "$cmd:$tail");
2688: } else {
2689: my $udir = &propath($udom,$uname);
2690: if (-e $udir) {
2691: my $file=$udir.'/userfiles/'.$ufile;
2692: if (-e $file) {
1.253 foxr 2693: #
2694: # If the file is a regular file unlink is fine...
1.489.2.19 raeburn 2695: # However it's possible the client wants a dir
2696: # removed, in which case rmdir is more appropriate
2697: # Note: rmdir will only remove an empty directory.
1.253 foxr 2698: #
1.240 banghart 2699: if (-f $file){
1.241 albertel 2700: unlink($file);
1.489.2.19 raeburn 2701: # for html files remove the associated .bak file
2702: # which may have been created by the editor.
2703: if ($ufile =~ m{^((docs|supplemental)/(?:\d+|default)/\d+(?:|/.+)/)[^/]+\.x?html?$}i) {
2704: my $path = $1;
2705: if (-e $file.'.bak') {
2706: unlink($file.'.bak');
2707: }
2708: }
1.241 albertel 2709: } elsif(-d $file) {
2710: rmdir($file);
1.240 banghart 2711: }
1.226 foxr 2712: if (-e $file) {
1.253 foxr 2713: # File is still there after we deleted it ?!?
2714:
1.226 foxr 2715: &Failure($client, "failed\n", "$cmd:$tail");
2716: } else {
2717: &Reply($client, "ok\n", "$cmd:$tail");
2718: }
2719: } else {
2720: &Failure($client, "not_found\n", "$cmd:$tail");
2721: }
2722: } else {
2723: &Failure($client, "not_home\n", "$cmd:$tail");
2724: }
2725: }
2726: return 1;
2727: }
2728: ®ister_handler("removeuserfile", \&remove_user_file_handler, 0,1,0);
2729:
1.236 albertel 2730: #
2731: # make a directory in a user's home directory userfiles subdirectory.
2732: # Parameters:
2733: # cmd - the Lond request keyword that got us here.
2734: # tail - the part of the command past the keyword.
2735: # client- File descriptor connected with the client.
2736: #
2737: # Returns:
2738: # 1 - Continue processing.
2739: sub mkdir_user_file_handler {
2740: my ($cmd, $tail, $client) = @_;
2741:
2742: my ($dir) = split(/:/, $tail); # Get rid of any tailing :'s lonc may have sent.
2743: $dir=&unescape($dir);
2744: my ($udom,$uname,$ufile) = ($dir =~ m|^([^/]+)/([^/]+)/(.+)$|);
2745: if ($ufile =~m|/\.\./|) {
2746: # any files paths with /../ in them refuse
2747: # to deal with
2748: &Failure($client, "refused\n", "$cmd:$tail");
2749: } else {
2750: my $udir = &propath($udom,$uname);
2751: if (-e $udir) {
1.264 albertel 2752: my $newdir=$udir.'/userfiles/'.$ufile.'/';
2753: if (!&mkpath($newdir)) {
2754: &Failure($client, "failed\n", "$cmd:$tail");
1.236 albertel 2755: }
1.264 albertel 2756: &Reply($client, "ok\n", "$cmd:$tail");
1.236 albertel 2757: } else {
2758: &Failure($client, "not_home\n", "$cmd:$tail");
2759: }
2760: }
2761: return 1;
2762: }
2763: ®ister_handler("mkdiruserfile", \&mkdir_user_file_handler, 0,1,0);
2764:
1.237 albertel 2765: #
2766: # rename a file in a user's home directory userfiles subdirectory.
2767: # Parameters:
2768: # cmd - the Lond request keyword that got us here.
2769: # tail - the part of the command past the keyword.
2770: # client- File descriptor connected with the client.
2771: #
2772: # Returns:
2773: # 1 - Continue processing.
2774: sub rename_user_file_handler {
2775: my ($cmd, $tail, $client) = @_;
2776:
2777: my ($udom,$uname,$old,$new) = split(/:/, $tail);
2778: $old=&unescape($old);
2779: $new=&unescape($new);
2780: if ($new =~m|/\.\./| || $old =~m|/\.\./|) {
2781: # any files paths with /../ in them refuse to deal with
2782: &Failure($client, "refused\n", "$cmd:$tail");
2783: } else {
2784: my $udir = &propath($udom,$uname);
2785: if (-e $udir) {
2786: my $oldfile=$udir.'/userfiles/'.$old;
2787: my $newfile=$udir.'/userfiles/'.$new;
2788: if (-e $newfile) {
2789: &Failure($client, "exists\n", "$cmd:$tail");
2790: } elsif (! -e $oldfile) {
2791: &Failure($client, "not_found\n", "$cmd:$tail");
2792: } else {
2793: if (!rename($oldfile,$newfile)) {
2794: &Failure($client, "failed\n", "$cmd:$tail");
2795: } else {
2796: &Reply($client, "ok\n", "$cmd:$tail");
2797: }
2798: }
2799: } else {
2800: &Failure($client, "not_home\n", "$cmd:$tail");
2801: }
2802: }
2803: return 1;
2804: }
2805: ®ister_handler("renameuserfile", \&rename_user_file_handler, 0,1,0);
2806:
1.227 foxr 2807: #
1.382 albertel 2808: # Checks if the specified user has an active session on the server
2809: # return ok if so, not_found if not
2810: #
2811: # Parameters:
2812: # cmd - The request keyword that dispatched to tus.
2813: # tail - The tail of the request (colon separated parameters).
2814: # client - Filehandle open on the client.
2815: # Return:
2816: # 1.
2817: sub user_has_session_handler {
2818: my ($cmd, $tail, $client) = @_;
2819:
2820: my ($udom, $uname) = map { &unescape($_) } (split(/:/, $tail));
2821:
2822: opendir(DIR,$perlvar{'lonIDsDir'});
2823: my $filename;
2824: while ($filename=readdir(DIR)) {
2825: last if ($filename=~/^\Q$uname\E_\d+_\Q$udom\E_/);
2826: }
2827: if ($filename) {
2828: &Reply($client, "ok\n", "$cmd:$tail");
2829: } else {
2830: &Failure($client, "not_found\n", "$cmd:$tail");
2831: }
2832: return 1;
2833:
2834: }
2835: ®ister_handler("userhassession", \&user_has_session_handler, 0,1,0);
2836:
2837: #
1.263 albertel 2838: # Authenticate access to a user file by checking that the token the user's
2839: # passed also exists in their session file
1.227 foxr 2840: #
2841: # Parameters:
2842: # cmd - The request keyword that dispatched to tus.
2843: # tail - The tail of the request (colon separated parameters).
2844: # client - Filehandle open on the client.
2845: # Return:
2846: # 1.
2847: sub token_auth_user_file_handler {
2848: my ($cmd, $tail, $client) = @_;
2849:
2850: my ($fname, $session) = split(/:/, $tail);
2851:
2852: chomp($session);
1.393 raeburn 2853: my $reply="non_auth";
1.343 albertel 2854: my $file = $perlvar{'lonIDsDir'}.'/'.$session.'.id';
2855: if (open(ENVIN,"$file")) {
1.332 albertel 2856: flock(ENVIN,LOCK_SH);
1.343 albertel 2857: tie(my %disk_env,'GDBM_File',"$file",&GDBM_READER(),0640);
2858: if (exists($disk_env{"userfile.$fname"})) {
1.393 raeburn 2859: $reply="ok";
1.343 albertel 2860: } else {
2861: foreach my $envname (keys(%disk_env)) {
2862: if ($envname=~ m|^userfile\.\Q$fname\E|) {
1.393 raeburn 2863: $reply="ok";
1.343 albertel 2864: last;
2865: }
2866: }
1.227 foxr 2867: }
1.343 albertel 2868: untie(%disk_env);
1.227 foxr 2869: close(ENVIN);
1.387 albertel 2870: &Reply($client, \$reply, "$cmd:$tail");
1.227 foxr 2871: } else {
2872: &Failure($client, "invalid_token\n", "$cmd:$tail");
2873: }
2874: return 1;
2875:
2876: }
2877: ®ister_handler("tokenauthuserfile", \&token_auth_user_file_handler, 0,1,0);
1.229 foxr 2878:
2879: #
2880: # Unsubscribe from a resource.
2881: #
2882: # Parameters:
2883: # $cmd - The command that got us here.
2884: # $tail - Tail of the command (remaining parameters).
2885: # $client - File descriptor connected to client.
2886: # Returns
2887: # 0 - Requested to exit, caller should shut down.
2888: # 1 - Continue processing.
2889: #
2890: sub unsubscribe_handler {
2891: my ($cmd, $tail, $client) = @_;
2892:
2893: my $userinput= "$cmd:$tail";
2894:
2895: my ($fname) = split(/:/,$tail); # Split in case there's extrs.
2896:
2897: &Debug("Unsubscribing $fname");
2898: if (-e $fname) {
2899: &Debug("Exists");
2900: &Reply($client, &unsub($fname,$clientip), $userinput);
2901: } else {
2902: &Failure($client, "not_found\n", $userinput);
2903: }
2904: return 1;
2905: }
2906: ®ister_handler("unsub", \&unsubscribe_handler, 0, 1, 0);
1.263 albertel 2907:
1.230 foxr 2908: # Subscribe to a resource
2909: #
2910: # Parameters:
2911: # $cmd - The command that got us here.
2912: # $tail - Tail of the command (remaining parameters).
2913: # $client - File descriptor connected to client.
2914: # Returns
2915: # 0 - Requested to exit, caller should shut down.
2916: # 1 - Continue processing.
2917: #
2918: sub subscribe_handler {
2919: my ($cmd, $tail, $client)= @_;
2920:
2921: my $userinput = "$cmd:$tail";
2922:
2923: &Reply( $client, &subscribe($userinput,$clientip), $userinput);
2924:
2925: return 1;
2926: }
2927: ®ister_handler("sub", \&subscribe_handler, 0, 1, 0);
2928:
2929: #
1.379 albertel 2930: # Determine the latest version of a resource (it looks for the highest
2931: # past version and then returns that +1)
1.230 foxr 2932: #
2933: # Parameters:
2934: # $cmd - The command that got us here.
2935: # $tail - Tail of the command (remaining parameters).
1.379 albertel 2936: # (Should consist of an absolute path to a file)
1.230 foxr 2937: # $client - File descriptor connected to client.
2938: # Returns
2939: # 0 - Requested to exit, caller should shut down.
2940: # 1 - Continue processing.
2941: #
2942: sub current_version_handler {
2943: my ($cmd, $tail, $client) = @_;
2944:
2945: my $userinput= "$cmd:$tail";
2946:
2947: my $fname = $tail;
2948: &Reply( $client, ¤tversion($fname)."\n", $userinput);
2949: return 1;
2950:
2951: }
2952: ®ister_handler("currentversion", \¤t_version_handler, 0, 1, 0);
2953:
2954: # Make an entry in a user's activity log.
2955: #
2956: # Parameters:
2957: # $cmd - The command that got us here.
2958: # $tail - Tail of the command (remaining parameters).
2959: # $client - File descriptor connected to client.
2960: # Returns
2961: # 0 - Requested to exit, caller should shut down.
2962: # 1 - Continue processing.
2963: #
2964: sub activity_log_handler {
2965: my ($cmd, $tail, $client) = @_;
2966:
2967:
2968: my $userinput= "$cmd:$tail";
2969:
2970: my ($udom,$uname,$what)=split(/:/,$tail);
2971: chomp($what);
2972: my $proname=&propath($udom,$uname);
2973: my $now=time;
2974: my $hfh;
2975: if ($hfh=IO::File->new(">>$proname/activity.log")) {
2976: print $hfh "$now:$clientname:$what\n";
2977: &Reply( $client, "ok\n", $userinput);
2978: } else {
2979: &Failure($client, "error: ".($!+0)." IO::File->new Failed "
2980: ."while attempting log\n",
2981: $userinput);
2982: }
2983:
2984: return 1;
2985: }
1.263 albertel 2986: ®ister_handler("log", \&activity_log_handler, 0, 1, 0);
1.230 foxr 2987:
2988: #
2989: # Put a namespace entry in a user profile hash.
2990: # My druthers would be for this to be an encrypted interaction too.
2991: # anything that might be an inadvertent covert channel about either
2992: # user authentication or user personal information....
2993: #
2994: # Parameters:
2995: # $cmd - The command that got us here.
2996: # $tail - Tail of the command (remaining parameters).
2997: # $client - File descriptor connected to client.
2998: # Returns
2999: # 0 - Requested to exit, caller should shut down.
3000: # 1 - Continue processing.
3001: #
3002: sub put_user_profile_entry {
3003: my ($cmd, $tail, $client) = @_;
1.229 foxr 3004:
1.230 foxr 3005: my $userinput = "$cmd:$tail";
3006:
1.242 raeburn 3007: my ($udom,$uname,$namespace,$what) =split(/:/,$tail,4);
1.230 foxr 3008: if ($namespace ne 'roles') {
3009: chomp($what);
3010: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3011: &GDBM_WRCREAT(),"P",$what);
3012: if($hashref) {
3013: my @pairs=split(/\&/,$what);
3014: foreach my $pair (@pairs) {
3015: my ($key,$value)=split(/=/,$pair);
3016: $hashref->{$key}=$value;
3017: }
1.311 albertel 3018: if (&untie_user_hash($hashref)) {
1.230 foxr 3019: &Reply( $client, "ok\n", $userinput);
3020: } else {
3021: &Failure($client, "error: ".($!+0)." untie(GDBM) failed ".
3022: "while attempting put\n",
3023: $userinput);
3024: }
3025: } else {
1.316 albertel 3026: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
1.230 foxr 3027: "while attempting put\n", $userinput);
3028: }
3029: } else {
3030: &Failure( $client, "refused\n", $userinput);
3031: }
3032:
3033: return 1;
3034: }
3035: ®ister_handler("put", \&put_user_profile_entry, 0, 1, 0);
3036:
1.283 albertel 3037: # Put a piece of new data in hash, returns error if entry already exists
3038: # Parameters:
3039: # $cmd - The command that got us here.
3040: # $tail - Tail of the command (remaining parameters).
3041: # $client - File descriptor connected to client.
3042: # Returns
3043: # 0 - Requested to exit, caller should shut down.
3044: # 1 - Continue processing.
3045: #
3046: sub newput_user_profile_entry {
3047: my ($cmd, $tail, $client) = @_;
3048:
3049: my $userinput = "$cmd:$tail";
3050:
3051: my ($udom,$uname,$namespace,$what) =split(/:/,$tail,4);
3052: if ($namespace eq 'roles') {
3053: &Failure( $client, "refused\n", $userinput);
3054: return 1;
3055: }
3056:
3057: chomp($what);
3058:
3059: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3060: &GDBM_WRCREAT(),"N",$what);
3061: if(!$hashref) {
1.316 albertel 3062: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
1.283 albertel 3063: "while attempting put\n", $userinput);
3064: return 1;
3065: }
3066:
3067: my @pairs=split(/\&/,$what);
3068: foreach my $pair (@pairs) {
3069: my ($key,$value)=split(/=/,$pair);
3070: if (exists($hashref->{$key})) {
1.489.2.17 raeburn 3071: if (!&untie_user_hash($hashref)) {
3072: &logthis("error: ".($!+0)." untie (GDBM) failed ".
3073: "while attempting newput - early out as key exists");
3074: }
1.283 albertel 3075: &Failure($client, "key_exists: ".$key."\n",$userinput);
3076: return 1;
3077: }
3078: }
3079:
3080: foreach my $pair (@pairs) {
3081: my ($key,$value)=split(/=/,$pair);
3082: $hashref->{$key}=$value;
3083: }
3084:
1.311 albertel 3085: if (&untie_user_hash($hashref)) {
1.283 albertel 3086: &Reply( $client, "ok\n", $userinput);
3087: } else {
3088: &Failure($client, "error: ".($!+0)." untie(GDBM) failed ".
3089: "while attempting put\n",
3090: $userinput);
3091: }
3092: return 1;
3093: }
3094: ®ister_handler("newput", \&newput_user_profile_entry, 0, 1, 0);
3095:
1.230 foxr 3096: #
3097: # Increment a profile entry in the user history file.
3098: # The history contains keyword value pairs. In this case,
3099: # The value itself is a pair of numbers. The first, the current value
3100: # the second an increment that this function applies to the current
3101: # value.
3102: #
3103: # Parameters:
3104: # $cmd - The command that got us here.
3105: # $tail - Tail of the command (remaining parameters).
3106: # $client - File descriptor connected to client.
3107: # Returns
3108: # 0 - Requested to exit, caller should shut down.
3109: # 1 - Continue processing.
3110: #
3111: sub increment_user_value_handler {
3112: my ($cmd, $tail, $client) = @_;
3113:
3114: my $userinput = "$cmd:$tail";
3115:
3116: my ($udom,$uname,$namespace,$what) =split(/:/,$tail);
3117: if ($namespace ne 'roles') {
3118: chomp($what);
3119: my $hashref = &tie_user_hash($udom, $uname,
3120: $namespace, &GDBM_WRCREAT(),
3121: "P",$what);
3122: if ($hashref) {
3123: my @pairs=split(/\&/,$what);
3124: foreach my $pair (@pairs) {
3125: my ($key,$value)=split(/=/,$pair);
1.284 raeburn 3126: $value = &unescape($value);
1.230 foxr 3127: # We could check that we have a number...
3128: if (! defined($value) || $value eq '') {
3129: $value = 1;
3130: }
3131: $hashref->{$key}+=$value;
1.284 raeburn 3132: if ($namespace eq 'nohist_resourcetracker') {
3133: if ($hashref->{$key} < 0) {
3134: $hashref->{$key} = 0;
3135: }
3136: }
1.230 foxr 3137: }
1.311 albertel 3138: if (&untie_user_hash($hashref)) {
1.230 foxr 3139: &Reply( $client, "ok\n", $userinput);
3140: } else {
3141: &Failure($client, "error: ".($!+0)." untie(GDBM) failed ".
3142: "while attempting inc\n", $userinput);
3143: }
3144: } else {
3145: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
3146: "while attempting inc\n", $userinput);
3147: }
3148: } else {
3149: &Failure($client, "refused\n", $userinput);
3150: }
3151:
3152: return 1;
3153: }
3154: ®ister_handler("inc", \&increment_user_value_handler, 0, 1, 0);
3155:
3156: #
3157: # Put a new role for a user. Roles are LonCAPA's packaging of permissions.
3158: # Each 'role' a user has implies a set of permissions. Adding a new role
3159: # for a person grants the permissions packaged with that role
3160: # to that user when the role is selected.
3161: #
3162: # Parameters:
3163: # $cmd - The command string (rolesput).
3164: # $tail - The remainder of the request line. For rolesput this
3165: # consists of a colon separated list that contains:
3166: # The domain and user that is granting the role (logged).
3167: # The domain and user that is getting the role.
3168: # The roles being granted as a set of & separated pairs.
3169: # each pair a key value pair.
3170: # $client - File descriptor connected to the client.
3171: # Returns:
3172: # 0 - If the daemon should exit
3173: # 1 - To continue processing.
3174: #
3175: #
3176: sub roles_put_handler {
3177: my ($cmd, $tail, $client) = @_;
3178:
3179: my $userinput = "$cmd:$tail";
3180:
3181: my ( $exedom, $exeuser, $udom, $uname, $what) = split(/:/,$tail);
3182:
3183:
3184: my $namespace='roles';
3185: chomp($what);
3186: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3187: &GDBM_WRCREAT(), "P",
3188: "$exedom:$exeuser:$what");
3189: #
3190: # Log the attempt to set a role. The {}'s here ensure that the file
3191: # handle is open for the minimal amount of time. Since the flush
3192: # is done on close this improves the chances the log will be an un-
3193: # corrupted ordered thing.
3194: if ($hashref) {
1.261 foxr 3195: my $pass_entry = &get_auth_type($udom, $uname);
3196: my ($auth_type,$pwd) = split(/:/, $pass_entry);
3197: $auth_type = $auth_type.":";
1.230 foxr 3198: my @pairs=split(/\&/,$what);
3199: foreach my $pair (@pairs) {
3200: my ($key,$value)=split(/=/,$pair);
3201: &manage_permissions($key, $udom, $uname,
1.260 foxr 3202: $auth_type);
1.230 foxr 3203: $hashref->{$key}=$value;
3204: }
1.311 albertel 3205: if (&untie_user_hash($hashref)) {
1.230 foxr 3206: &Reply($client, "ok\n", $userinput);
3207: } else {
3208: &Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ".
3209: "while attempting rolesput\n", $userinput);
3210: }
3211: } else {
3212: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
3213: "while attempting rolesput\n", $userinput);
3214: }
3215: return 1;
3216: }
3217: ®ister_handler("rolesput", \&roles_put_handler, 1,1,0); # Encoded client only.
3218:
3219: #
1.231 foxr 3220: # Deletes (removes) a role for a user. This is equivalent to removing
3221: # a permissions package associated with the role from the user's profile.
3222: #
3223: # Parameters:
3224: # $cmd - The command (rolesdel)
3225: # $tail - The remainder of the request line. This consists
3226: # of:
3227: # The domain and user requesting the change (logged)
3228: # The domain and user being changed.
3229: # The roles being revoked. These are shipped to us
3230: # as a bunch of & separated role name keywords.
3231: # $client - The file handle open on the client.
3232: # Returns:
3233: # 1 - Continue processing
3234: # 0 - Exit.
3235: #
3236: sub roles_delete_handler {
3237: my ($cmd, $tail, $client) = @_;
3238:
3239: my $userinput = "$cmd:$tail";
3240:
3241: my ($exedom,$exeuser,$udom,$uname,$what)=split(/:/,$tail);
3242: &Debug("cmd = ".$cmd." exedom= ".$exedom."user = ".$exeuser." udom=".$udom.
3243: "what = ".$what);
3244: my $namespace='roles';
3245: chomp($what);
3246: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3247: &GDBM_WRCREAT(), "D",
3248: "$exedom:$exeuser:$what");
3249:
3250: if ($hashref) {
3251: my @rolekeys=split(/\&/,$what);
3252:
3253: foreach my $key (@rolekeys) {
3254: delete $hashref->{$key};
3255: }
1.315 albertel 3256: if (&untie_user_hash($hashref)) {
1.231 foxr 3257: &Reply($client, "ok\n", $userinput);
3258: } else {
3259: &Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ".
3260: "while attempting rolesdel\n", $userinput);
3261: }
3262: } else {
3263: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
3264: "while attempting rolesdel\n", $userinput);
3265: }
3266:
3267: return 1;
3268: }
3269: ®ister_handler("rolesdel", \&roles_delete_handler, 1,1, 0); # Encoded client only
3270:
3271: # Unencrypted get from a user's profile database. See
3272: # GetProfileEntryEncrypted for a version that does end-to-end encryption.
3273: # This function retrieves a keyed item from a specific named database in the
3274: # user's directory.
3275: #
3276: # Parameters:
3277: # $cmd - Command request keyword (get).
3278: # $tail - Tail of the command. This is a colon separated list
3279: # consisting of the domain and username that uniquely
3280: # identifies the profile,
3281: # The 'namespace' which selects the gdbm file to
3282: # do the lookup in,
3283: # & separated list of keys to lookup. Note that
3284: # the values are returned as an & separated list too.
3285: # $client - File descriptor open on the client.
3286: # Returns:
3287: # 1 - Continue processing.
3288: # 0 - Exit.
3289: #
3290: sub get_profile_entry {
3291: my ($cmd, $tail, $client) = @_;
3292:
3293: my $userinput= "$cmd:$tail";
3294:
3295: my ($udom,$uname,$namespace,$what) = split(/:/,$tail);
3296: chomp($what);
1.255 foxr 3297:
1.390 raeburn 3298:
1.255 foxr 3299: my $replystring = read_profile($udom, $uname, $namespace, $what);
3300: my ($first) = split(/:/,$replystring);
3301: if($first ne "error") {
1.387 albertel 3302: &Reply($client, \$replystring, $userinput);
1.231 foxr 3303: } else {
1.255 foxr 3304: &Failure($client, $replystring." while attempting get\n", $userinput);
1.231 foxr 3305: }
3306: return 1;
1.255 foxr 3307:
3308:
1.231 foxr 3309: }
3310: ®ister_handler("get", \&get_profile_entry, 0,1,0);
3311:
3312: #
3313: # Process the encrypted get request. Note that the request is sent
3314: # in clear, but the reply is encrypted. This is a small covert channel:
3315: # information about the sensitive keys is given to the snooper. Just not
3316: # information about the values of the sensitive key. Hmm if I wanted to
3317: # know these I'd snoop for the egets. Get the profile item names from them
3318: # and then issue a get for them since there's no enforcement of the
3319: # requirement of an encrypted get for particular profile items. If I
3320: # were re-doing this, I'd force the request to be encrypted as well as the
3321: # reply. I'd also just enforce encrypted transactions for all gets since
3322: # that would prevent any covert channel snooping.
3323: #
3324: # Parameters:
3325: # $cmd - Command keyword of request (eget).
1.489.2.32 raeburn 3326: # $tail - Tail of the command. See GetProfileEntry
3327: # for more information about this.
1.231 foxr 3328: # $client - File open on the client.
3329: # Returns:
3330: # 1 - Continue processing
3331: # 0 - server should exit.
3332: sub get_profile_entry_encrypted {
3333: my ($cmd, $tail, $client) = @_;
3334:
3335: my $userinput = "$cmd:$tail";
3336:
1.339 albertel 3337: my ($udom,$uname,$namespace,$what) = split(/:/,$tail);
1.231 foxr 3338: chomp($what);
1.255 foxr 3339: my $qresult = read_profile($udom, $uname, $namespace, $what);
3340: my ($first) = split(/:/, $qresult);
3341: if($first ne "error") {
3342:
3343: if ($cipher) {
3344: my $cmdlength=length($qresult);
3345: $qresult.=" ";
3346: my $encqresult='';
3347: for(my $encidx=0;$encidx<=$cmdlength;$encidx+=8) {
3348: $encqresult.= unpack("H16",
3349: $cipher->encrypt(substr($qresult,
3350: $encidx,
3351: 8)));
3352: }
3353: &Reply( $client, "enc:$cmdlength:$encqresult\n", $userinput);
3354: } else {
1.231 foxr 3355: &Failure( $client, "error:no_key\n", $userinput);
3356: }
3357: } else {
1.255 foxr 3358: &Failure($client, "$qresult while attempting eget\n", $userinput);
3359:
1.231 foxr 3360: }
3361:
3362: return 1;
3363: }
1.255 foxr 3364: ®ister_handler("eget", \&get_profile_entry_encrypted, 0, 1, 0);
1.263 albertel 3365:
1.231 foxr 3366: #
3367: # Deletes a key in a user profile database.
3368: #
3369: # Parameters:
3370: # $cmd - Command keyword (del).
3371: # $tail - Command tail. IN this case a colon
3372: # separated list containing:
3373: # The domain and user that identifies uniquely
3374: # the identity of the user.
3375: # The profile namespace (name of the profile
3376: # database file).
3377: # & separated list of keywords to delete.
3378: # $client - File open on client socket.
3379: # Returns:
3380: # 1 - Continue processing
3381: # 0 - Exit server.
3382: #
3383: #
3384: sub delete_profile_entry {
3385: my ($cmd, $tail, $client) = @_;
3386:
3387: my $userinput = "cmd:$tail";
3388:
3389: my ($udom,$uname,$namespace,$what) = split(/:/,$tail);
3390: chomp($what);
3391: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3392: &GDBM_WRCREAT(),
3393: "D",$what);
3394: if ($hashref) {
3395: my @keys=split(/\&/,$what);
3396: foreach my $key (@keys) {
3397: delete($hashref->{$key});
3398: }
1.315 albertel 3399: if (&untie_user_hash($hashref)) {
1.231 foxr 3400: &Reply($client, "ok\n", $userinput);
3401: } else {
3402: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
3403: "while attempting del\n", $userinput);
3404: }
3405: } else {
3406: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
3407: "while attempting del\n", $userinput);
3408: }
3409: return 1;
3410: }
3411: ®ister_handler("del", \&delete_profile_entry, 0, 1, 0);
1.263 albertel 3412:
1.231 foxr 3413: #
3414: # List the set of keys that are defined in a profile database file.
3415: # A successful reply from this will contain an & separated list of
3416: # the keys.
3417: # Parameters:
3418: # $cmd - Command request (keys).
3419: # $tail - Remainder of the request, a colon separated
3420: # list containing domain/user that identifies the
3421: # user being queried, and the database namespace
3422: # (database filename essentially).
3423: # $client - File open on the client.
3424: # Returns:
3425: # 1 - Continue processing.
3426: # 0 - Exit the server.
3427: #
3428: sub get_profile_keys {
3429: my ($cmd, $tail, $client) = @_;
3430:
3431: my $userinput = "$cmd:$tail";
3432:
3433: my ($udom,$uname,$namespace)=split(/:/,$tail);
3434: my $qresult='';
3435: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3436: &GDBM_READER());
3437: if ($hashref) {
3438: foreach my $key (keys %$hashref) {
3439: $qresult.="$key&";
3440: }
1.315 albertel 3441: if (&untie_user_hash($hashref)) {
1.231 foxr 3442: $qresult=~s/\&$//;
1.387 albertel 3443: &Reply($client, \$qresult, $userinput);
1.231 foxr 3444: } else {
3445: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
3446: "while attempting keys\n", $userinput);
3447: }
3448: } else {
3449: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
3450: "while attempting keys\n", $userinput);
3451: }
3452:
3453: return 1;
3454: }
3455: ®ister_handler("keys", \&get_profile_keys, 0, 1, 0);
3456:
3457: #
3458: # Dump the contents of a user profile database.
3459: # Note that this constitutes a very large covert channel too since
3460: # the dump will return sensitive information that is not encrypted.
3461: # The naive security assumption is that the session negotiation ensures
3462: # our client is trusted and I don't believe that's assured at present.
3463: # Sure want badly to go to ssl or tls. Of course if my peer isn't really
3464: # a LonCAPA node they could have negotiated an encryption key too so >sigh<.
3465: #
3466: # Parameters:
3467: # $cmd - The command request keyword (currentdump).
3468: # $tail - Remainder of the request, consisting of a colon
3469: # separated list that has the domain/username and
3470: # the namespace to dump (database file).
3471: # $client - file open on the remote client.
3472: # Returns:
3473: # 1 - Continue processing.
3474: # 0 - Exit the server.
3475: #
3476: sub dump_profile_database {
3477: my ($cmd, $tail, $client) = @_;
3478:
3479: my $userinput = "$cmd:$tail";
3480:
3481: my ($udom,$uname,$namespace) = split(/:/,$tail);
3482: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3483: &GDBM_READER());
3484: if ($hashref) {
3485: # Structure of %data:
3486: # $data{$symb}->{$parameter}=$value;
3487: # $data{$symb}->{'v.'.$parameter}=$version;
3488: # since $parameter will be unescaped, we do not
3489: # have to worry about silly parameter names...
3490:
3491: my $qresult='';
3492: my %data = (); # A hash of anonymous hashes..
3493: while (my ($key,$value) = each(%$hashref)) {
3494: my ($v,$symb,$param) = split(/:/,$key);
3495: next if ($v eq 'version' || $symb eq 'keys');
3496: next if (exists($data{$symb}) &&
3497: exists($data{$symb}->{$param}) &&
3498: $data{$symb}->{'v.'.$param} > $v);
3499: $data{$symb}->{$param}=$value;
3500: $data{$symb}->{'v.'.$param}=$v;
3501: }
1.311 albertel 3502: if (&untie_user_hash($hashref)) {
1.231 foxr 3503: while (my ($symb,$param_hash) = each(%data)) {
3504: while(my ($param,$value) = each (%$param_hash)){
3505: next if ($param =~ /^v\./); # Ignore versions...
3506: #
3507: # Just dump the symb=value pairs separated by &
3508: #
3509: $qresult.=$symb.':'.$param.'='.$value.'&';
3510: }
3511: }
3512: chop($qresult);
1.387 albertel 3513: &Reply($client , \$qresult, $userinput);
1.231 foxr 3514: } else {
3515: &Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ".
3516: "while attempting currentdump\n", $userinput);
3517: }
3518: } else {
3519: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
3520: "while attempting currentdump\n", $userinput);
3521: }
3522:
3523: return 1;
3524: }
3525: ®ister_handler("currentdump", \&dump_profile_database, 0, 1, 0);
3526:
3527: #
3528: # Dump a profile database with an optional regular expression
3529: # to match against the keys. In this dump, no effort is made
3530: # to separate symb from version information. Presumably the
3531: # databases that are dumped by this command are of a different
3532: # structure. Need to look at this and improve the documentation of
3533: # both this and the currentdump handler.
3534: # Parameters:
3535: # $cmd - The command keyword.
3536: # $tail - All of the characters after the $cmd:
3537: # These are expected to be a colon
3538: # separated list containing:
3539: # domain/user - identifying the user.
3540: # namespace - identifying the database.
3541: # regexp - optional regular expression
3542: # that is matched against
3543: # database keywords to do
3544: # selective dumps.
1.488 raeburn 3545: # range - optional range of entries
3546: # e.g., 10-20 would return the
3547: # 10th to 19th items, etc.
1.231 foxr 3548: # $client - Channel open on the client.
3549: # Returns:
3550: # 1 - Continue processing.
3551: # Side effects:
3552: # response is written to $client.
3553: #
3554: sub dump_with_regexp {
3555: my ($cmd, $tail, $client) = @_;
3556:
1.489.2.4 raeburn 3557: my $res = LONCAPA::Lond::dump_with_regexp($tail, $clientversion);
1.231 foxr 3558:
1.489.2.4 raeburn 3559: if ($res =~ /^error:/) {
3560: &Failure($client, \$res, "$cmd:$tail");
1.231 foxr 3561: } else {
1.489.2.4 raeburn 3562: &Reply($client, \$res, "$cmd:$tail");
1.231 foxr 3563: }
3564:
3565: return 1;
3566: }
3567: ®ister_handler("dump", \&dump_with_regexp, 0, 1, 0);
3568:
1.489.2.43.2. (raeburn 3569:): #
3570:): # Process the encrypted dump request. Original call should
3571:): # be from lonnet::dump() with seventh arg ($encrypt) set to
3572:): # 1, to ensure that both request and response are encrypted.
3573:): #
3574:): # Parameters:
3575:): # $cmd - Command keyword of request (edump).
3576:): # $tail - Tail of the command.
3577:): # See &dump_with_regexp for more
3578:): # information about this.
3579:): # $client - File open on the client.
3580:): # Returns:
3581:): # 1 - Continue processing
3582:): # 0 - server should exit.
3583:): #
3584:):
3585:): sub encrypted_dump_with_regexp {
3586:): my ($cmd, $tail, $client) = @_;
3587:): my $res = LONCAPA::Lond::dump_with_regexp($tail, $clientversion);
3588:):
3589:): if ($res =~ /^error:/) {
3590:): Failure($client, \$res, "$cmd:$tail");
3591:): } else {
3592:): if ($cipher) {
3593:): my $cmdlength=length($res);
3594:): $res.=" ";
3595:): my $encres='';
3596:): for (my $encidx=0;$encidx<=$cmdlength;$encidx+=8) {
3597:): $encres.= unpack("H16",
3598:): $cipher->encrypt(substr($res,
3599:): $encidx,
3600:): 8)));
3601:): }
3602:): &Reply( $client,"enc:$cmdlength:$encres\n","$cmd:$tail");
3603:): } else {
3604:): &Failure( $client, "error:no_key\n","$cmd:$tail");
3605:): }
3606:): }
3607:): }
3608:): ®ister_handler("edump", \&encrypted_dump_with_regexp, 0, 1, 0);
3609:):
1.231 foxr 3610: # Store a set of key=value pairs associated with a versioned name.
3611: #
3612: # Parameters:
3613: # $cmd - Request command keyword.
3614: # $tail - Tail of the request. This is a colon
3615: # separated list containing:
3616: # domain/user - User and authentication domain.
3617: # namespace - Name of the database being modified
3618: # rid - Resource keyword to modify.
3619: # what - new value associated with rid.
1.489.2.17 raeburn 3620: # laststore - (optional) version=timestamp
3621: # for most recent transaction for rid
3622: # in namespace, when cstore was called
1.231 foxr 3623: #
3624: # $client - Socket open on the client.
3625: #
3626: #
3627: # Returns:
3628: # 1 (keep on processing).
3629: # Side-Effects:
3630: # Writes to the client
1.489.2.17 raeburn 3631: # Successful storage will cause either 'ok', or, if $laststore was included
3632: # in the tail of the request, and the version number for the last transaction
3633: # is larger than the version in $laststore, delay:$numtrans , where $numtrans
3634: # is the number of store evevnts recorded for rid in namespace since
3635: # lonnet::store() was called by the client.
3636: #
1.231 foxr 3637: sub store_handler {
3638: my ($cmd, $tail, $client) = @_;
3639:
3640: my $userinput = "$cmd:$tail";
3641:
1.489.2.17 raeburn 3642: chomp($tail);
3643: my ($udom,$uname,$namespace,$rid,$what,$laststore) =split(/:/,$tail);
1.231 foxr 3644: if ($namespace ne 'roles') {
3645:
3646: my @pairs=split(/\&/,$what);
3647: my $hashref = &tie_user_hash($udom, $uname, $namespace,
1.268 albertel 3648: &GDBM_WRCREAT(), "S",
1.231 foxr 3649: "$rid:$what");
3650: if ($hashref) {
3651: my $now = time;
1.489.2.17 raeburn 3652: my $numtrans;
3653: if ($laststore) {
3654: my ($previousversion,$previoustime) = split(/\=/,$laststore);
3655: my ($lastversion,$lasttime) = (0,0);
3656: $lastversion = $hashref->{"version:$rid"};
3657: if ($lastversion) {
3658: $lasttime = $hashref->{"$lastversion:$rid:timestamp"};
3659: }
3660: if (($previousversion) && ($previousversion !~ /\D/)) {
3661: if (($lastversion > $previousversion) && ($lasttime >= $previoustime)) {
3662: $numtrans = $lastversion - $previousversion;
3663: }
3664: } elsif ($lastversion) {
3665: $numtrans = $lastversion;
3666: }
3667: if ($numtrans) {
3668: $numtrans =~ s/D//g;
3669: }
3670: }
3671:
1.231 foxr 3672: $hashref->{"version:$rid"}++;
3673: my $version=$hashref->{"version:$rid"};
3674: my $allkeys='';
3675: foreach my $pair (@pairs) {
3676: my ($key,$value)=split(/=/,$pair);
3677: $allkeys.=$key.':';
3678: $hashref->{"$version:$rid:$key"}=$value;
3679: }
3680: $hashref->{"$version:$rid:timestamp"}=$now;
3681: $allkeys.='timestamp';
3682: $hashref->{"$version:keys:$rid"}=$allkeys;
1.311 albertel 3683: if (&untie_user_hash($hashref)) {
1.489.2.17 raeburn 3684: my $msg = 'ok';
3685: if ($numtrans) {
3686: $msg = 'delay:'.$numtrans;
3687: }
3688: &Reply($client, "$msg\n", $userinput);
1.231 foxr 3689: } else {
3690: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
3691: "while attempting store\n", $userinput);
3692: }
3693: } else {
3694: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
3695: "while attempting store\n", $userinput);
3696: }
3697: } else {
3698: &Failure($client, "refused\n", $userinput);
3699: }
3700:
3701: return 1;
3702: }
3703: ®ister_handler("store", \&store_handler, 0, 1, 0);
1.263 albertel 3704:
1.323 albertel 3705: # Modify a set of key=value pairs associated with a versioned name.
3706: #
3707: # Parameters:
3708: # $cmd - Request command keyword.
3709: # $tail - Tail of the request. This is a colon
3710: # separated list containing:
3711: # domain/user - User and authentication domain.
3712: # namespace - Name of the database being modified
3713: # rid - Resource keyword to modify.
3714: # v - Version item to modify
3715: # what - new value associated with rid.
3716: #
3717: # $client - Socket open on the client.
3718: #
3719: #
3720: # Returns:
3721: # 1 (keep on processing).
3722: # Side-Effects:
3723: # Writes to the client
3724: sub putstore_handler {
3725: my ($cmd, $tail, $client) = @_;
3726:
3727: my $userinput = "$cmd:$tail";
3728:
3729: my ($udom,$uname,$namespace,$rid,$v,$what) =split(/:/,$tail);
3730: if ($namespace ne 'roles') {
3731:
3732: chomp($what);
3733: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3734: &GDBM_WRCREAT(), "M",
3735: "$rid:$v:$what");
3736: if ($hashref) {
3737: my $now = time;
3738: my %data = &hash_extract($what);
3739: my @allkeys;
3740: while (my($key,$value) = each(%data)) {
3741: push(@allkeys,$key);
3742: $hashref->{"$v:$rid:$key"} = $value;
3743: }
3744: my $allkeys = join(':',@allkeys);
3745: $hashref->{"$v:keys:$rid"}=$allkeys;
3746:
3747: if (&untie_user_hash($hashref)) {
3748: &Reply($client, "ok\n", $userinput);
3749: } else {
3750: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
3751: "while attempting store\n", $userinput);
3752: }
3753: } else {
3754: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
3755: "while attempting store\n", $userinput);
3756: }
3757: } else {
3758: &Failure($client, "refused\n", $userinput);
3759: }
3760:
3761: return 1;
3762: }
3763: ®ister_handler("putstore", \&putstore_handler, 0, 1, 0);
3764:
3765: sub hash_extract {
3766: my ($str)=@_;
3767: my %hash;
3768: foreach my $pair (split(/\&/,$str)) {
3769: my ($key,$value)=split(/=/,$pair);
3770: $hash{$key}=$value;
3771: }
3772: return (%hash);
3773: }
3774: sub hash_to_str {
3775: my ($hash_ref)=@_;
3776: my $str;
3777: foreach my $key (keys(%$hash_ref)) {
3778: $str.=$key.'='.$hash_ref->{$key}.'&';
3779: }
3780: $str=~s/\&$//;
3781: return $str;
3782: }
3783:
1.231 foxr 3784: #
3785: # Dump out all versions of a resource that has key=value pairs associated
3786: # with it for each version. These resources are built up via the store
3787: # command.
3788: #
3789: # Parameters:
3790: # $cmd - Command keyword.
3791: # $tail - Remainder of the request which consists of:
3792: # domain/user - User and auth. domain.
3793: # namespace - name of resource database.
3794: # rid - Resource id.
3795: # $client - socket open on the client.
3796: #
3797: # Returns:
3798: # 1 indicating the caller should not yet exit.
3799: # Side-effects:
3800: # Writes a reply to the client.
3801: # The reply is a string of the following shape:
3802: # version=current&version:keys=k1:k2...&1:k1=v1&1:k2=v2...
3803: # Where the 1 above represents version 1.
3804: # this continues for all pairs of keys in all versions.
3805: #
3806: #
3807: #
3808: #
3809: sub restore_handler {
3810: my ($cmd, $tail, $client) = @_;
3811:
3812: my $userinput = "$cmd:$tail"; # Only used for logging purposes.
1.351 banghart 3813: my ($udom,$uname,$namespace,$rid) = split(/:/,$tail);
1.352 albertel 3814: $namespace=~s/\//\_/g;
1.350 albertel 3815: $namespace = &LONCAPA::clean_username($namespace);
1.349 albertel 3816:
1.231 foxr 3817: chomp($rid);
3818: my $qresult='';
1.309 albertel 3819: my $hashref = &tie_user_hash($udom, $uname, $namespace, &GDBM_READER());
3820: if ($hashref) {
3821: my $version=$hashref->{"version:$rid"};
1.231 foxr 3822: $qresult.="version=$version&";
3823: my $scope;
3824: for ($scope=1;$scope<=$version;$scope++) {
1.309 albertel 3825: my $vkeys=$hashref->{"$scope:keys:$rid"};
1.231 foxr 3826: my @keys=split(/:/,$vkeys);
3827: my $key;
3828: $qresult.="$scope:keys=$vkeys&";
3829: foreach $key (@keys) {
1.309 albertel 3830: $qresult.="$scope:$key=".$hashref->{"$scope:$rid:$key"}."&";
1.231 foxr 3831: }
3832: }
1.311 albertel 3833: if (&untie_user_hash($hashref)) {
1.231 foxr 3834: $qresult=~s/\&$//;
1.387 albertel 3835: &Reply( $client, \$qresult, $userinput);
1.231 foxr 3836: } else {
3837: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
3838: "while attempting restore\n", $userinput);
3839: }
3840: } else {
3841: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
3842: "while attempting restore\n", $userinput);
3843: }
3844:
3845: return 1;
3846:
3847:
3848: }
3849: ®ister_handler("restore", \&restore_handler, 0,1,0);
1.234 foxr 3850:
3851: #
1.324 raeburn 3852: # Add a chat message to a synchronous discussion board.
1.234 foxr 3853: #
3854: # Parameters:
3855: # $cmd - Request keyword.
3856: # $tail - Tail of the command. A colon separated list
3857: # containing:
3858: # cdom - Domain on which the chat board lives
1.324 raeburn 3859: # cnum - Course containing the chat board.
3860: # newpost - Body of the posting.
3861: # group - Optional group, if chat board is only
3862: # accessible in a group within the course
1.234 foxr 3863: # $client - Socket open on the client.
3864: # Returns:
3865: # 1 - Indicating caller should keep on processing.
3866: #
3867: # Side-effects:
3868: # writes a reply to the client.
3869: #
3870: #
3871: sub send_chat_handler {
3872: my ($cmd, $tail, $client) = @_;
3873:
3874:
3875: my $userinput = "$cmd:$tail";
3876:
1.324 raeburn 3877: my ($cdom,$cnum,$newpost,$group)=split(/\:/,$tail);
3878: &chat_add($cdom,$cnum,$newpost,$group);
1.234 foxr 3879: &Reply($client, "ok\n", $userinput);
3880:
3881: return 1;
3882: }
3883: ®ister_handler("chatsend", \&send_chat_handler, 0, 1, 0);
1.263 albertel 3884:
1.234 foxr 3885: #
1.324 raeburn 3886: # Retrieve the set of chat messages from a discussion board.
1.234 foxr 3887: #
3888: # Parameters:
3889: # $cmd - Command keyword that initiated the request.
3890: # $tail - Remainder of the request after the command
3891: # keyword. In this case a colon separated list of
3892: # chat domain - Which discussion board.
3893: # chat id - Discussion thread(?)
3894: # domain/user - Authentication domain and username
3895: # of the requesting person.
1.324 raeburn 3896: # group - Optional course group containing
3897: # the board.
1.234 foxr 3898: # $client - Socket open on the client program.
3899: # Returns:
3900: # 1 - continue processing
3901: # Side effects:
3902: # Response is written to the client.
3903: #
3904: sub retrieve_chat_handler {
3905: my ($cmd, $tail, $client) = @_;
3906:
3907:
3908: my $userinput = "$cmd:$tail";
3909:
1.324 raeburn 3910: my ($cdom,$cnum,$udom,$uname,$group)=split(/\:/,$tail);
1.234 foxr 3911: my $reply='';
1.324 raeburn 3912: foreach (&get_chat($cdom,$cnum,$udom,$uname,$group)) {
1.234 foxr 3913: $reply.=&escape($_).':';
3914: }
3915: $reply=~s/\:$//;
1.387 albertel 3916: &Reply($client, \$reply, $userinput);
1.234 foxr 3917:
3918:
3919: return 1;
3920: }
3921: ®ister_handler("chatretr", \&retrieve_chat_handler, 0, 1, 0);
3922:
3923: #
3924: # Initiate a query of an sql database. SQL query repsonses get put in
3925: # a file for later retrieval. This prevents sql query results from
3926: # bottlenecking the system. Note that with loncnew, perhaps this is
3927: # less of an issue since multiple outstanding requests can be concurrently
3928: # serviced.
3929: #
3930: # Parameters:
3931: # $cmd - COmmand keyword that initiated the request.
3932: # $tail - Remainder of the command after the keyword.
3933: # For this function, this consists of a query and
3934: # 3 arguments that are self-documentingly labelled
3935: # in the original arg1, arg2, arg3.
3936: # $client - Socket open on the client.
3937: # Return:
3938: # 1 - Indicating processing should continue.
3939: # Side-effects:
3940: # a reply is written to $client.
3941: #
3942: sub send_query_handler {
3943: my ($cmd, $tail, $client) = @_;
3944:
3945:
3946: my $userinput = "$cmd:$tail";
3947:
3948: my ($query,$arg1,$arg2,$arg3)=split(/\:/,$tail);
3949: $query=~s/\n*$//g;
1.489.2.27 raeburn 3950: if (($query eq 'usersearch') || ($query eq 'instdirsearch')) {
3951: my $usersearchconf = &get_usersearch_config($currentdomainid,'directorysrch');
3952: my $earlyout;
3953: if (ref($usersearchconf) eq 'HASH') {
3954: if ($currentdomainid eq $clienthomedom) {
3955: if ($query eq 'usersearch') {
3956: if ($usersearchconf->{'lcavailable'} eq '0') {
3957: $earlyout = 1;
3958: }
3959: } else {
3960: if ($usersearchconf->{'available'} eq '0') {
3961: $earlyout = 1;
3962: }
3963: }
3964: } else {
3965: if ($query eq 'usersearch') {
3966: if ($usersearchconf->{'lclocalonly'}) {
3967: $earlyout = 1;
3968: }
3969: } else {
3970: if ($usersearchconf->{'localonly'}) {
3971: $earlyout = 1;
3972: }
3973: }
3974: }
3975: }
3976: if ($earlyout) {
3977: &Reply($client, "query_not_authorized\n");
3978: return 1;
3979: }
3980: }
1.234 foxr 3981: &Reply($client, "". &sql_reply("$clientname\&$query".
3982: "\&$arg1"."\&$arg2"."\&$arg3")."\n",
3983: $userinput);
3984:
3985: return 1;
3986: }
3987: ®ister_handler("querysend", \&send_query_handler, 0, 1, 0);
3988:
3989: #
3990: # Add a reply to an sql query. SQL queries are done asyncrhonously.
3991: # The query is submitted via a "querysend" transaction.
3992: # There it is passed on to the lonsql daemon, queued and issued to
3993: # mysql.
3994: # This transaction is invoked when the sql transaction is complete
3995: # it stores the query results in flie and indicates query completion.
3996: # presumably local software then fetches this response... I'm guessing
3997: # the sequence is: lonc does a querysend, we ask lonsql to do it.
3998: # lonsql on completion of the query interacts with the lond of our
3999: # client to do a query reply storing two files:
4000: # - id - The results of the query.
4001: # - id.end - Indicating the transaction completed.
4002: # NOTE: id is a unique id assigned to the query and querysend time.
4003: # Parameters:
4004: # $cmd - Command keyword that initiated this request.
4005: # $tail - Remainder of the tail. In this case that's a colon
4006: # separated list containing the query Id and the
4007: # results of the query.
4008: # $client - Socket open on the client.
4009: # Return:
4010: # 1 - Indicating that we should continue processing.
4011: # Side effects:
4012: # ok written to the client.
4013: #
4014: sub reply_query_handler {
4015: my ($cmd, $tail, $client) = @_;
4016:
4017:
4018: my $userinput = "$cmd:$tail";
4019:
1.339 albertel 4020: my ($id,$reply)=split(/:/,$tail);
1.234 foxr 4021: my $store;
4022: my $execdir=$perlvar{'lonDaemons'};
4023: if ($store=IO::File->new(">$execdir/tmp/$id")) {
4024: $reply=~s/\&/\n/g;
4025: print $store $reply;
4026: close $store;
4027: my $store2=IO::File->new(">$execdir/tmp/$id.end");
4028: print $store2 "done\n";
4029: close $store2;
4030: &Reply($client, "ok\n", $userinput);
4031: } else {
4032: &Failure($client, "error: ".($!+0)
4033: ." IO::File->new Failed ".
4034: "while attempting queryreply\n", $userinput);
4035: }
4036:
4037:
4038: return 1;
4039: }
4040: ®ister_handler("queryreply", \&reply_query_handler, 0, 1, 0);
4041:
4042: #
4043: # Process the courseidput request. Not quite sure what this means
4044: # at the system level sense. It appears a gdbm file in the
4045: # /home/httpd/lonUsers/$domain/nohist_courseids is tied and
4046: # a set of entries made in that database.
4047: #
4048: # Parameters:
4049: # $cmd - The command keyword that initiated this request.
4050: # $tail - Tail of the command. In this case consists of a colon
4051: # separated list contaning the domain to apply this to and
4052: # an ampersand separated list of keyword=value pairs.
1.272 raeburn 4053: # Each value is a colon separated list that includes:
4054: # description, institutional code and course owner.
4055: # For backward compatibility with versions included
4056: # in LON-CAPA 1.1.X (and earlier) and 1.2.X, institutional
4057: # code and/or course owner are preserved from the existing
4058: # record when writing a new record in response to 1.1 or
4059: # 1.2 implementations of lonnet::flushcourselogs().
4060: #
1.234 foxr 4061: # $client - Socket open on the client.
4062: # Returns:
4063: # 1 - indicating that processing should continue
4064: #
4065: # Side effects:
4066: # reply is written to the client.
4067: #
4068: sub put_course_id_handler {
4069: my ($cmd, $tail, $client) = @_;
4070:
4071:
4072: my $userinput = "$cmd:$tail";
4073:
1.266 raeburn 4074: my ($udom, $what) = split(/:/, $tail,2);
1.234 foxr 4075: chomp($what);
4076: my $now=time;
4077: my @pairs=split(/\&/,$what);
4078:
4079: my $hashref = &tie_domain_hash($udom, "nohist_courseids", &GDBM_WRCREAT());
4080: if ($hashref) {
4081: foreach my $pair (@pairs) {
1.271 raeburn 4082: my ($key,$courseinfo) = split(/=/,$pair,2);
4083: $courseinfo =~ s/=/:/g;
1.384 raeburn 4084: if (defined($hashref->{$key})) {
4085: my $value = &Apache::lonnet::thaw_unescape($hashref->{$key});
4086: if (ref($value) eq 'HASH') {
4087: my @items = ('description','inst_code','owner','type');
4088: my @new_items = split(/:/,$courseinfo,-1);
4089: my %storehash;
4090: for (my $i=0; $i<@new_items; $i++) {
1.391 raeburn 4091: $storehash{$items[$i]} = &unescape($new_items[$i]);
1.384 raeburn 4092: }
4093: $hashref->{$key} =
4094: &Apache::lonnet::freeze_escape(\%storehash);
4095: my $unesc_key = &unescape($key);
4096: $hashref->{&escape('lasttime:'.$unesc_key)} = $now;
4097: next;
1.383 raeburn 4098: }
1.384 raeburn 4099: }
4100: my @current_items = split(/:/,$hashref->{$key},-1);
4101: shift(@current_items); # remove description
4102: pop(@current_items); # remove last access
4103: my $numcurrent = scalar(@current_items);
4104: if ($numcurrent > 3) {
4105: $numcurrent = 3;
4106: }
4107: my @new_items = split(/:/,$courseinfo,-1);
4108: my $numnew = scalar(@new_items);
4109: if ($numcurrent > 0) {
4110: if ($numnew <= $numcurrent) { # flushcourselogs() from pre 2.2
4111: for (my $j=$numcurrent-$numnew; $j>=0; $j--) {
4112: $courseinfo .= ':'.$current_items[$numcurrent-$j-1];
1.333 raeburn 4113: }
1.272 raeburn 4114: }
4115: }
1.384 raeburn 4116: $hashref->{$key}=$courseinfo.':'.$now;
1.234 foxr 4117: }
1.311 albertel 4118: if (&untie_domain_hash($hashref)) {
1.253 foxr 4119: &Reply( $client, "ok\n", $userinput);
1.234 foxr 4120: } else {
1.253 foxr 4121: &Failure($client, "error: ".($!+0)
1.234 foxr 4122: ." untie(GDBM) Failed ".
4123: "while attempting courseidput\n", $userinput);
4124: }
4125: } else {
1.253 foxr 4126: &Failure($client, "error: ".($!+0)
1.234 foxr 4127: ." tie(GDBM) Failed ".
4128: "while attempting courseidput\n", $userinput);
4129: }
4130:
4131: return 1;
4132: }
4133: ®ister_handler("courseidput", \&put_course_id_handler, 0, 1, 0);
4134:
1.383 raeburn 4135: sub put_course_id_hash_handler {
4136: my ($cmd, $tail, $client) = @_;
4137: my $userinput = "$cmd:$tail";
1.384 raeburn 4138: my ($udom,$mode,$what) = split(/:/, $tail,3);
1.383 raeburn 4139: chomp($what);
4140: my $now=time;
4141: my @pairs=split(/\&/,$what);
1.384 raeburn 4142: my $hashref = &tie_domain_hash($udom, "nohist_courseids", &GDBM_WRCREAT());
1.383 raeburn 4143: if ($hashref) {
4144: foreach my $pair (@pairs) {
4145: my ($key,$value)=split(/=/,$pair);
1.384 raeburn 4146: my $unesc_key = &unescape($key);
4147: if ($mode ne 'timeonly') {
4148: if (!defined($hashref->{&escape('lasttime:'.$unesc_key)})) {
4149: my $curritems = &Apache::lonnet::thaw_unescape($key);
4150: if (ref($curritems) ne 'HASH') {
4151: my @current_items = split(/:/,$hashref->{$key},-1);
4152: my $lasttime = pop(@current_items);
4153: $hashref->{&escape('lasttime:'.$unesc_key)} = $lasttime;
4154: } else {
4155: $hashref->{&escape('lasttime:'.$unesc_key)} = '';
4156: }
4157: }
4158: $hashref->{$key} = $value;
4159: }
4160: if ($mode ne 'notime') {
4161: $hashref->{&escape('lasttime:'.$unesc_key)} = $now;
4162: }
1.383 raeburn 4163: }
4164: if (&untie_domain_hash($hashref)) {
4165: &Reply($client, "ok\n", $userinput);
4166: } else {
4167: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4168: "while attempting courseidputhash\n", $userinput);
4169: }
4170: } else {
4171: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
4172: "while attempting courseidputhash\n", $userinput);
4173: }
4174: return 1;
4175: }
4176: ®ister_handler("courseidputhash", \&put_course_id_hash_handler, 0, 1, 0);
4177:
1.234 foxr 4178: # Retrieves the value of a course id resource keyword pattern
4179: # defined since a starting date. Both the starting date and the
4180: # keyword pattern are optional. If the starting date is not supplied it
4181: # is treated as the beginning of time. If the pattern is not found,
4182: # it is treatred as "." matching everything.
4183: #
4184: # Parameters:
4185: # $cmd - Command keyword that resulted in us being dispatched.
4186: # $tail - The remainder of the command that, in this case, consists
4187: # of a colon separated list of:
4188: # domain - The domain in which the course database is
4189: # defined.
4190: # since - Optional parameter describing the minimum
4191: # time of definition(?) of the resources that
4192: # will match the dump.
4193: # description - regular expression that is used to filter
4194: # the dump. Only keywords matching this regexp
4195: # will be used.
1.272 raeburn 4196: # institutional code - optional supplied code to filter
4197: # the dump. Only courses with an institutional code
4198: # that match the supplied code will be returned.
1.336 raeburn 4199: # owner - optional supplied username and domain of owner to
4200: # filter the dump. Only courses for which the course
4201: # owner matches the supplied username and/or domain
4202: # will be returned. Pre-2.2.0 legacy entries from
4203: # nohist_courseiddump will only contain usernames.
1.384 raeburn 4204: # type - optional parameter for selection
1.418 raeburn 4205: # regexp_ok - if 1 or -1 allow the supplied institutional code
4206: # filter to behave as a regular expression:
4207: # 1 will not exclude the course if the instcode matches the RE
4208: # -1 will exclude the course if the instcode matches the RE
1.384 raeburn 4209: # rtn_as_hash - whether to return the information available for
4210: # each matched item as a frozen hash of all
4211: # key, value pairs in the item's hash, or as a
4212: # colon-separated list of (in order) description,
4213: # institutional code, and course owner.
1.404 raeburn 4214: # selfenrollonly - filter by courses allowing self-enrollment
4215: # now or in the future (selfenrollonly = 1).
4216: # catfilter - filter by course category, assigned to a course
4217: # using manually defined categories (i.e., not
1.407 raeburn 4218: # self-cataloging based on on institutional code).
1.404 raeburn 4219: # showhidden - include course in results even if course
1.407 raeburn 4220: # was set to be excluded from course catalog (DC only).
1.404 raeburn 4221: # caller - if set to 'coursecatalog', courses set to be hidden
4222: # from course catalog will be excluded from results (unless
4223: # overridden by "showhidden".
1.427 raeburn 4224: # cloner - escaped username:domain of course cloner (if picking course to
1.419 raeburn 4225: # clone).
4226: # cc_clone_list - escaped comma separated list of courses for which
4227: # course cloner has active CC role (and so can clone
4228: # automatically).
1.427 raeburn 4229: # cloneonly - filter by courses for which cloner has rights to clone.
4230: # createdbefore - include courses for which creation date preceeded this date.
4231: # createdafter - include courses for which creation date followed this date.
4232: # creationcontext - include courses created in specified context
1.404 raeburn 4233: #
1.445 raeburn 4234: # domcloner - flag to indicate if user can create CCs in course's domain.
1.489.2.11 raeburn 4235: # If so, ability to clone course is automatic.
4236: # hasuniquecode - filter by courses for which a six character unique code has
4237: # been set.
1.445 raeburn 4238: #
1.234 foxr 4239: # $client - The socket open on the client.
4240: # Returns:
4241: # 1 - Continue processing.
4242: # Side Effects:
4243: # a reply is written to $client.
4244: sub dump_course_id_handler {
4245: my ($cmd, $tail, $client) = @_;
4246: my $userinput = "$cmd:$tail";
4247:
1.333 raeburn 4248: my ($udom,$since,$description,$instcodefilter,$ownerfilter,$coursefilter,
1.404 raeburn 4249: $typefilter,$regexp_ok,$rtn_as_hash,$selfenrollonly,$catfilter,$showhidden,
1.427 raeburn 4250: $caller,$cloner,$cc_clone_list,$cloneonly,$createdbefore,$createdafter,
1.489.2.11 raeburn 4251: $creationcontext,$domcloner,$hasuniquecode) =split(/:/,$tail);
1.397 raeburn 4252: my $now = time;
1.419 raeburn 4253: my ($cloneruname,$clonerudom,%cc_clone);
1.234 foxr 4254: if (defined($description)) {
4255: $description=&unescape($description);
4256: } else {
4257: $description='.';
4258: }
1.266 raeburn 4259: if (defined($instcodefilter)) {
4260: $instcodefilter=&unescape($instcodefilter);
4261: } else {
4262: $instcodefilter='.';
4263: }
1.336 raeburn 4264: my ($ownerunamefilter,$ownerdomfilter);
1.266 raeburn 4265: if (defined($ownerfilter)) {
4266: $ownerfilter=&unescape($ownerfilter);
1.336 raeburn 4267: if ($ownerfilter ne '.' && defined($ownerfilter)) {
4268: if ($ownerfilter =~ /^([^:]*):([^:]*)$/) {
4269: $ownerunamefilter = $1;
4270: $ownerdomfilter = $2;
4271: } else {
4272: $ownerunamefilter = $ownerfilter;
4273: $ownerdomfilter = '';
4274: }
4275: }
1.266 raeburn 4276: } else {
4277: $ownerfilter='.';
4278: }
1.336 raeburn 4279:
1.282 raeburn 4280: if (defined($coursefilter)) {
4281: $coursefilter=&unescape($coursefilter);
4282: } else {
4283: $coursefilter='.';
4284: }
1.333 raeburn 4285: if (defined($typefilter)) {
4286: $typefilter=&unescape($typefilter);
4287: } else {
4288: $typefilter='.';
4289: }
1.344 raeburn 4290: if (defined($regexp_ok)) {
4291: $regexp_ok=&unescape($regexp_ok);
4292: }
1.401 raeburn 4293: if (defined($catfilter)) {
4294: $catfilter=&unescape($catfilter);
4295: }
1.419 raeburn 4296: if (defined($cloner)) {
4297: $cloner = &unescape($cloner);
4298: ($cloneruname,$clonerudom) = ($cloner =~ /^($LONCAPA::match_username):($LONCAPA::match_domain)$/);
4299: }
4300: if (defined($cc_clone_list)) {
4301: $cc_clone_list = &unescape($cc_clone_list);
4302: my @cc_cloners = split('&',$cc_clone_list);
4303: foreach my $cid (@cc_cloners) {
4304: my ($clonedom,$clonenum) = split(':',$cid);
4305: next if ($clonedom ne $udom);
4306: $cc_clone{$clonedom.'_'.$clonenum} = 1;
4307: }
4308: }
1.431 raeburn 4309: if ($createdbefore ne '') {
1.427 raeburn 4310: $createdbefore = &unescape($createdbefore);
4311: } else {
4312: $createdbefore = 0;
4313: }
1.431 raeburn 4314: if ($createdafter ne '') {
1.427 raeburn 4315: $createdafter = &unescape($createdafter);
4316: } else {
4317: $createdafter = 0;
4318: }
1.431 raeburn 4319: if ($creationcontext ne '') {
1.427 raeburn 4320: $creationcontext = &unescape($creationcontext);
4321: } else {
4322: $creationcontext = '.';
4323: }
1.489.2.11 raeburn 4324: unless ($hasuniquecode) {
4325: $hasuniquecode = '.';
4326: }
1.384 raeburn 4327: my $unpack = 1;
1.485 raeburn 4328: if ($description eq '.' && $instcodefilter eq '.' && $ownerfilter eq '.' &&
1.384 raeburn 4329: $typefilter eq '.') {
4330: $unpack = 0;
4331: }
4332: if (!defined($since)) { $since=0; }
1.234 foxr 4333: my $qresult='';
4334: my $hashref = &tie_domain_hash($udom, "nohist_courseids", &GDBM_WRCREAT());
4335: if ($hashref) {
1.384 raeburn 4336: while (my ($key,$value) = each(%$hashref)) {
1.397 raeburn 4337: my ($unesc_key,$lasttime_key,$lasttime,$is_hash,%val,
1.427 raeburn 4338: %unesc_val,$selfenroll_end,$selfenroll_types,$created,
4339: $context);
1.384 raeburn 4340: $unesc_key = &unescape($key);
4341: if ($unesc_key =~ /^lasttime:/) {
4342: next;
4343: } else {
4344: $lasttime_key = &escape('lasttime:'.$unesc_key);
4345: }
4346: if ($hashref->{$lasttime_key} ne '') {
4347: $lasttime = $hashref->{$lasttime_key};
4348: next if ($lasttime<$since);
4349: }
1.419 raeburn 4350: my ($canclone,$valchange);
1.384 raeburn 4351: my $items = &Apache::lonnet::thaw_unescape($value);
4352: if (ref($items) eq 'HASH') {
1.429 raeburn 4353: if ($hashref->{$lasttime_key} eq '') {
1.430 raeburn 4354: next if ($since > 1);
1.429 raeburn 4355: }
1.384 raeburn 4356: $is_hash = 1;
1.445 raeburn 4357: if ($domcloner) {
4358: $canclone = 1;
4359: } elsif (defined($clonerudom)) {
1.419 raeburn 4360: if ($items->{'cloners'}) {
4361: my @cloneable = split(',',$items->{'cloners'});
4362: if (@cloneable) {
4363: if (grep(/^\*$/,@cloneable)) {
4364: $canclone = 1;
4365: } elsif (grep(/^\*:\Q$clonerudom\E$/,@cloneable)) {
4366: $canclone = 1;
4367: } elsif (grep(/^\Q$cloneruname\E:\Q$clonerudom\E$/,@cloneable)) {
4368: $canclone = 1;
4369: }
4370: }
4371: unless ($canclone) {
4372: if ($cloneruname ne '' && $clonerudom ne '') {
4373: if ($cc_clone{$unesc_key}) {
4374: $canclone = 1;
4375: $items->{'cloners'} .= ','.$cloneruname.':'.
4376: $clonerudom;
4377: $valchange = 1;
4378: }
4379: }
4380: }
4381: } elsif (defined($cloneruname)) {
4382: if ($cc_clone{$unesc_key}) {
4383: $canclone = 1;
4384: $items->{'cloners'} = $cloneruname.':'.$clonerudom;
4385: $valchange = 1;
4386: }
1.437 raeburn 4387: unless ($canclone) {
4388: if ($items->{'owner'} =~ /:/) {
4389: if ($items->{'owner'} eq $cloner) {
4390: $canclone = 1;
4391: }
1.444 raeburn 4392: } elsif ($cloner eq $items->{'owner'}.':'.$udom) {
1.437 raeburn 4393: $canclone = 1;
4394: }
4395: if ($canclone) {
4396: $items->{'cloners'} = $cloneruname.':'.$clonerudom;
4397: $valchange = 1;
4398: }
4399: }
1.419 raeburn 4400: }
4401: }
1.384 raeburn 4402: if ($unpack || !$rtn_as_hash) {
4403: $unesc_val{'descr'} = $items->{'description'};
4404: $unesc_val{'inst_code'} = $items->{'inst_code'};
4405: $unesc_val{'owner'} = $items->{'owner'};
4406: $unesc_val{'type'} = $items->{'type'};
1.419 raeburn 4407: $unesc_val{'cloners'} = $items->{'cloners'};
1.427 raeburn 4408: $unesc_val{'created'} = $items->{'created'};
4409: $unesc_val{'context'} = $items->{'context'};
1.404 raeburn 4410: }
4411: $selfenroll_types = $items->{'selfenroll_types'};
4412: $selfenroll_end = $items->{'selfenroll_end_date'};
1.427 raeburn 4413: $created = $items->{'created'};
4414: $context = $items->{'context'};
1.489.2.11 raeburn 4415: if ($hasuniquecode ne '.') {
4416: next unless ($items->{'uniquecode'});
4417: }
1.404 raeburn 4418: if ($selfenrollonly) {
4419: next if (!$selfenroll_types);
4420: if (($selfenroll_end > 0) && ($selfenroll_end <= $now)) {
4421: next;
1.397 raeburn 4422: }
1.404 raeburn 4423: }
1.427 raeburn 4424: if ($creationcontext ne '.') {
4425: next if (($context ne '') && ($context ne $creationcontext));
4426: }
4427: if ($createdbefore > 0) {
4428: next if (($created eq '') || ($created > $createdbefore));
4429: }
4430: if ($createdafter > 0) {
4431: next if (($created eq '') || ($created <= $createdafter));
4432: }
1.404 raeburn 4433: if ($catfilter ne '') {
1.406 raeburn 4434: next if ($items->{'categories'} eq '');
4435: my @categories = split('&',$items->{'categories'});
1.407 raeburn 4436: next if (@categories == 0);
4437: my @subcats = split('&',$catfilter);
4438: my $matchcat = 0;
4439: foreach my $cat (@categories) {
4440: if (grep(/^\Q$cat\E$/,@subcats)) {
4441: $matchcat = 1;
4442: last;
4443: }
4444: }
4445: next if (!$matchcat);
1.404 raeburn 4446: }
4447: if ($caller eq 'coursecatalog') {
1.405 raeburn 4448: if ($items->{'hidefromcat'} eq 'yes') {
4449: next if !$showhidden;
1.401 raeburn 4450: }
1.384 raeburn 4451: }
1.383 raeburn 4452: } else {
1.401 raeburn 4453: next if ($catfilter ne '');
1.419 raeburn 4454: next if ($selfenrollonly);
1.427 raeburn 4455: next if ($createdbefore || $createdafter);
4456: next if ($creationcontext ne '.');
1.419 raeburn 4457: if ((defined($clonerudom)) && (defined($cloneruname))) {
4458: if ($cc_clone{$unesc_key}) {
4459: $canclone = 1;
4460: $val{'cloners'} = &escape($cloneruname.':'.$clonerudom);
4461: }
4462: }
1.384 raeburn 4463: $is_hash = 0;
1.388 raeburn 4464: my @courseitems = split(/:/,$value);
1.403 raeburn 4465: $lasttime = pop(@courseitems);
1.402 raeburn 4466: if ($hashref->{$lasttime_key} eq '') {
4467: next if ($lasttime<$since);
4468: }
1.384 raeburn 4469: ($val{'descr'},$val{'inst_code'},$val{'owner'},$val{'type'}) = @courseitems;
1.383 raeburn 4470: }
1.419 raeburn 4471: if ($cloneonly) {
4472: next unless ($canclone);
4473: }
1.266 raeburn 4474: my $match = 1;
1.384 raeburn 4475: if ($description ne '.') {
4476: if (!$is_hash) {
4477: $unesc_val{'descr'} = &unescape($val{'descr'});
4478: }
4479: if (eval{$unesc_val{'descr'} !~ /\Q$description\E/i}) {
1.266 raeburn 4480: $match = 0;
1.384 raeburn 4481: }
1.266 raeburn 4482: }
1.384 raeburn 4483: if ($instcodefilter ne '.') {
4484: if (!$is_hash) {
4485: $unesc_val{'inst_code'} = &unescape($val{'inst_code'});
4486: }
1.418 raeburn 4487: if ($regexp_ok == 1) {
1.384 raeburn 4488: if (eval{$unesc_val{'inst_code'} !~ /$instcodefilter/}) {
1.344 raeburn 4489: $match = 0;
4490: }
1.418 raeburn 4491: } elsif ($regexp_ok == -1) {
4492: if (eval{$unesc_val{'inst_code'} =~ /$instcodefilter/}) {
4493: $match = 0;
4494: }
1.344 raeburn 4495: } else {
1.384 raeburn 4496: if (eval{$unesc_val{'inst_code'} !~ /\Q$instcodefilter\E/i}) {
1.344 raeburn 4497: $match = 0;
4498: }
1.266 raeburn 4499: }
1.234 foxr 4500: }
1.384 raeburn 4501: if ($ownerfilter ne '.') {
4502: if (!$is_hash) {
4503: $unesc_val{'owner'} = &unescape($val{'owner'});
4504: }
1.336 raeburn 4505: if (($ownerunamefilter ne '') && ($ownerdomfilter ne '')) {
1.384 raeburn 4506: if ($unesc_val{'owner'} =~ /:/) {
4507: if (eval{$unesc_val{'owner'} !~
4508: /\Q$ownerunamefilter\E:\Q$ownerdomfilter\E$/i}) {
1.336 raeburn 4509: $match = 0;
4510: }
4511: } else {
1.384 raeburn 4512: if (eval{$unesc_val{'owner'} !~ /\Q$ownerunamefilter\E/i}) {
1.336 raeburn 4513: $match = 0;
4514: }
4515: }
4516: } elsif ($ownerunamefilter ne '') {
1.384 raeburn 4517: if ($unesc_val{'owner'} =~ /:/) {
4518: if (eval{$unesc_val{'owner'} !~ /\Q$ownerunamefilter\E:[^:]+$/i}) {
1.336 raeburn 4519: $match = 0;
4520: }
4521: } else {
1.384 raeburn 4522: if (eval{$unesc_val{'owner'} !~ /\Q$ownerunamefilter\E/i}) {
1.336 raeburn 4523: $match = 0;
4524: }
4525: }
4526: } elsif ($ownerdomfilter ne '') {
1.384 raeburn 4527: if ($unesc_val{'owner'} =~ /:/) {
4528: if (eval{$unesc_val{'owner'} !~ /^[^:]+:\Q$ownerdomfilter\E/}) {
1.336 raeburn 4529: $match = 0;
4530: }
4531: } else {
4532: if ($ownerdomfilter ne $udom) {
4533: $match = 0;
4534: }
4535: }
1.266 raeburn 4536: }
4537: }
1.384 raeburn 4538: if ($coursefilter ne '.') {
4539: if (eval{$unesc_key !~ /^$udom(_)\Q$coursefilter\E$/}) {
1.282 raeburn 4540: $match = 0;
4541: }
4542: }
1.384 raeburn 4543: if ($typefilter ne '.') {
4544: if (!$is_hash) {
4545: $unesc_val{'type'} = &unescape($val{'type'});
4546: }
4547: if ($unesc_val{'type'} eq '') {
1.333 raeburn 4548: if ($typefilter ne 'Course') {
4549: $match = 0;
4550: }
1.383 raeburn 4551: } else {
1.384 raeburn 4552: if (eval{$unesc_val{'type'} !~ /^\Q$typefilter\E$/}) {
1.333 raeburn 4553: $match = 0;
4554: }
4555: }
4556: }
1.266 raeburn 4557: if ($match == 1) {
1.384 raeburn 4558: if ($rtn_as_hash) {
4559: if ($is_hash) {
1.419 raeburn 4560: if ($valchange) {
4561: my $newvalue = &Apache::lonnet::freeze_escape($items);
4562: $qresult.=$key.'='.$newvalue.'&';
4563: } else {
4564: $qresult.=$key.'='.$value.'&';
4565: }
1.384 raeburn 4566: } else {
1.388 raeburn 4567: my %rtnhash = ( 'description' => &unescape($val{'descr'}),
4568: 'inst_code' => &unescape($val{'inst_code'}),
4569: 'owner' => &unescape($val{'owner'}),
4570: 'type' => &unescape($val{'type'}),
1.419 raeburn 4571: 'cloners' => &unescape($val{'cloners'}),
1.384 raeburn 4572: );
4573: my $items = &Apache::lonnet::freeze_escape(\%rtnhash);
4574: $qresult.=$key.'='.$items.'&';
4575: }
1.383 raeburn 4576: } else {
1.384 raeburn 4577: if ($is_hash) {
4578: $qresult .= $key.'='.&escape($unesc_val{'descr'}).':'.
4579: &escape($unesc_val{'inst_code'}).':'.
4580: &escape($unesc_val{'owner'}).'&';
4581: } else {
4582: $qresult .= $key.'='.$val{'descr'}.':'.$val{'inst_code'}.
4583: ':'.$val{'owner'}.'&';
4584: }
1.383 raeburn 4585: }
1.266 raeburn 4586: }
1.234 foxr 4587: }
1.311 albertel 4588: if (&untie_domain_hash($hashref)) {
1.234 foxr 4589: chop($qresult);
1.387 albertel 4590: &Reply($client, \$qresult, $userinput);
1.234 foxr 4591: } else {
4592: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4593: "while attempting courseiddump\n", $userinput);
4594: }
4595: } else {
4596: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
4597: "while attempting courseiddump\n", $userinput);
4598: }
4599: return 1;
4600: }
4601: ®ister_handler("courseiddump", \&dump_course_id_handler, 0, 1, 0);
1.238 foxr 4602:
1.438 raeburn 4603: sub course_lastaccess_handler {
4604: my ($cmd, $tail, $client) = @_;
4605: my $userinput = "$cmd:$tail";
4606: my ($cdom,$cnum) = split(':',$tail);
4607: my (%lastaccess,$qresult);
4608: my $hashref = &tie_domain_hash($cdom, "nohist_courseids", &GDBM_WRCREAT());
4609: if ($hashref) {
4610: while (my ($key,$value) = each(%$hashref)) {
4611: my ($unesc_key,$lasttime);
4612: $unesc_key = &unescape($key);
4613: if ($cnum) {
4614: next unless ($unesc_key =~ /\Q$cdom\E_\Q$cnum\E$/);
4615: }
4616: if ($unesc_key =~ /^lasttime:($LONCAPA::match_domain\_$LONCAPA::match_courseid)/) {
4617: $lastaccess{$1} = $value;
4618: } else {
4619: my $items = &Apache::lonnet::thaw_unescape($value);
4620: if (ref($items) eq 'HASH') {
4621: unless ($lastaccess{$unesc_key}) {
4622: $lastaccess{$unesc_key} = '';
4623: }
4624: } else {
4625: my @courseitems = split(':',$value);
4626: $lastaccess{$unesc_key} = pop(@courseitems);
4627: }
4628: }
4629: }
4630: foreach my $cid (sort(keys(%lastaccess))) {
4631: $qresult.=&escape($cid).'='.$lastaccess{$cid}.'&';
4632: }
4633: if (&untie_domain_hash($hashref)) {
4634: if ($qresult) {
4635: chop($qresult);
4636: }
4637: &Reply($client, \$qresult, $userinput);
4638: } else {
4639: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4640: "while attempting lastacourseaccess\n", $userinput);
4641: }
4642: } else {
4643: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
4644: "while attempting lastcourseaccess\n", $userinput);
4645: }
4646: return 1;
4647: }
4648: ®ister_handler("courselastaccess",\&course_lastaccess_handler, 0, 1, 0);
4649:
1.489.2.36 raeburn 4650: sub course_sessions_handler {
4651: my ($cmd, $tail, $client) = @_;
4652: my $userinput = "$cmd:$tail";
4653: my ($cdom,$cnum,$lastactivity) = split(':',$tail);
4654: my $dbsuffix = '_'.$cdom.'_'.$cnum.'.db';
4655: my (%sessions,$qresult);
4656: my $now=time;
4657: if (opendir(DIR,$perlvar{'lonIDsDir'})) {
4658: my $filename;
4659: while ($filename=readdir(DIR)) {
4660: next if ($filename=~/^\./);
4661: next if ($filename=~/^publicuser_/);
4662: next if ($filename=~/^[a-f0-9]+_(linked|lti_\d+)\.id$/);
1.489.2.37 raeburn 4663: if ($filename =~ /^($LONCAPA::match_username)_\d+_($LONCAPA::match_domain)_/) {
1.489.2.36 raeburn 4664: my ($uname,$udom) = ($1,$2);
1.489.2.37 raeburn 4665: next unless (-e "$perlvar{'lonDaemons'}/tmp/$uname$dbsuffix");
1.489.2.36 raeburn 4666: my $mtime = (stat("$perlvar{'lonIDsDir'}/$filename"))[9];
4667: if ($lastactivity < 0) {
1.489.2.38 raeburn 4668: next if ($mtime-$now > $lastactivity);
1.489.2.36 raeburn 4669: } else {
1.489.2.38 raeburn 4670: next if ($now-$mtime > $lastactivity);
1.489.2.36 raeburn 4671: }
4672: $sessions{$uname.':'.$udom} = $mtime;
4673: }
4674: }
4675: closedir(DIR);
4676: }
4677: foreach my $user (keys(%sessions)) {
4678: $qresult.=&escape($user).'='.$sessions{$user}.'&';
4679: }
4680: if ($qresult) {
4681: chop($qresult);
4682: }
4683: &Reply($client, \$qresult, $userinput);
4684: return 1;
4685: }
4686: ®ister_handler("coursesessions",\&course_sessions_handler, 0, 1, 0);
4687:
1.238 foxr 4688: #
1.348 raeburn 4689: # Puts an unencrypted entry in a namespace db file at the domain level
4690: #
4691: # Parameters:
4692: # $cmd - The command that got us here.
4693: # $tail - Tail of the command (remaining parameters).
4694: # $client - File descriptor connected to client.
4695: # Returns
4696: # 0 - Requested to exit, caller should shut down.
4697: # 1 - Continue processing.
4698: # Side effects:
4699: # reply is written to $client.
4700: #
4701: sub put_domain_handler {
4702: my ($cmd,$tail,$client) = @_;
4703:
4704: my $userinput = "$cmd:$tail";
4705:
4706: my ($udom,$namespace,$what) =split(/:/,$tail,3);
4707: chomp($what);
4708: my @pairs=split(/\&/,$what);
4709: my $hashref = &tie_domain_hash($udom, "$namespace", &GDBM_WRCREAT(),
4710: "P", $what);
4711: if ($hashref) {
4712: foreach my $pair (@pairs) {
4713: my ($key,$value)=split(/=/,$pair);
4714: $hashref->{$key}=$value;
4715: }
4716: if (&untie_domain_hash($hashref)) {
4717: &Reply($client, "ok\n", $userinput);
4718: } else {
4719: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4720: "while attempting putdom\n", $userinput);
4721: }
4722: } else {
4723: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
4724: "while attempting putdom\n", $userinput);
4725: }
4726:
4727: return 1;
4728: }
4729: ®ister_handler("putdom", \&put_domain_handler, 0, 1, 0);
4730:
4731: # Unencrypted get from the namespace database file at the domain level.
4732: # This function retrieves a keyed item from a specific named database in the
4733: # domain directory.
4734: #
4735: # Parameters:
1.489.2.40 raeburn 4736: # $cmd - Command request keyword (getdom).
1.348 raeburn 4737: # $tail - Tail of the command. This is a colon separated list
4738: # consisting of the domain and the 'namespace'
4739: # which selects the gdbm file to do the lookup in,
4740: # & separated list of keys to lookup. Note that
4741: # the values are returned as an & separated list too.
4742: # $client - File descriptor open on the client.
4743: # Returns:
4744: # 1 - Continue processing.
4745: # 0 - Exit.
4746: # Side effects:
4747: # reply is written to $client.
4748: #
4749:
4750: sub get_domain_handler {
4751: my ($cmd, $tail, $client) = @_;
4752:
1.489.2.34 raeburn 4753: my $userinput = "$cmd:$tail";
1.348 raeburn 4754:
4755: my ($udom,$namespace,$what)=split(/:/,$tail,3);
1.489.2.43.2. (raeburn 4756:): if (($namespace =~ /^enc/) || ($namespace eq 'private')) {
4757:): &Failure( $client, "refused\n", $userinput);
4758:): } else {
4759:): my $res = LONCAPA::Lond::get_dom($userinput);
4760:): if ($res =~ /^error:/) {
4761:): &Failure($client, \$res, $userinput);
4762:): } else {
4763:): &Reply($client, \$res, $userinput);
4764:): }
4765:): }
4766:):
4767:): return 1;
4768:): }
4769:): ®ister_handler("getdom", \&get_domain_handler, 0, 1, 0);
4770:):
4771:): sub encrypted_get_domain_handler {
4772:): my ($cmd, $tail, $client) = @_;
4773:):
4774:): my $userinput = "$cmd:$tail";
4775:):
4776:): my ($udom,$namespace,$what) = split(/:/,$tail,3);
4777:): if ($namespace eq 'private') {
4778:): &Failure( $client, "refused\n", $userinput);
1.348 raeburn 4779: } else {
1.489.2.43.2. (raeburn 4780:): my $res = LONCAPA::Lond::get_dom($userinput);
4781:): if ($res =~ /^error:/) {
4782:): &Failure($client, \$res, $userinput);
4783:): } else {
4784:): if ($cipher) {
4785:): my $cmdlength=length($res);
4786:): $res.=" ";
4787:): my $encres='';
4788:): for (my $encidx=0;$encidx<=$cmdlength;$encidx+=8) {
4789:): $encres.= unpack("H16",
4790:): $cipher->encrypt(substr($res,
4791:): $encidx,
4792:): 8)));
4793:): }
4794:): &Reply( $client,"enc:$cmdlength:$encres\n",$userinput);
4795:): } else {
4796:): &Failure( $client, "error:no_key\n",$userinput);
4797:): }
4798:): }
1.348 raeburn 4799: }
4800: return 1;
4801: }
1.489.2.43.2. (raeburn 4802:): ®ister_handler("egetdom", \&encrypted_get_domain_handler, 1, 1, 0);
1.348 raeburn 4803:
1.420 raeburn 4804: #
1.489.2.43.2. (raeburn 4805:): # Encrypted get from the namespace database file at the domain level.
4806:): # This function retrieves a keyed item from a specific named database in the
4807:): # domain directory.
4808:): #
4809:): # Parameters:
4810:): # $cmd - Command request keyword (lti).
4811:): # $tail - Tail of the command. This is a colon-separated list
4812:): # consisting of the domain, coursenum, if for LTI-
4813:): # enabled deep-linking to course content using
4814:): # link protection configured within a course,
4815:): # context (=deeplink) if for LTI-enabled deep-linking
4816:): # to course content using LTI Provider settings
4817:): # configured within a course's domain, the (escaped)
4818:): # launch URL, the (escaped) method (typically POST),
4819:): # and a frozen hash of the LTI launch parameters
4820:): # from the LTI payload.
4821:): # $client - File descriptor open on the client.
4822:): # Returns:
4823:): # 1 - Continue processing.
4824:): # 0 - Exit.
4825:): # Side effects:
4826:): # The reply will contain an LTI itemID, if the signed LTI payload
4827:): # could be verified using the consumer key and the shared secret
4828:): # available for that key (for the itemID) for either the course or domain,
4829:): # depending on values for cnum and context. The reply is encrypted before
4830:): # being written to $client.
4831:): #
4832:): sub lti_handler {
4833:): my ($cmd, $tail, $client) = @_;
4834:):
4835:): my $userinput = "$cmd:$tail";
4836:):
4837:): my ($cdom,$cnum,$context,$escurl,$escmethod,$items) = split(/:/,$tail);
4838:): my $url = &unescape($escurl);
4839:): my $method = &unescape($escmethod);
4840:): my $params = &Apache::lonnet::thaw_unescape($items);
4841:): my $res;
4842:): if ($cnum ne '') {
4843:): $res = &LONCAPA::Lond::crslti_itemid($cdom,$cnum,$url,$method,$params,$perlvar{'lonVersion'});
4844:): } else {
4845:): $res = &LONCAPA::Lond::domlti_itemid($cdom,$context,$url,$method,$params,$perlvar{'lonVersion'});
4846:): }
4847:): if ($res =~ /^error:/) {
4848:): &Failure($client, \$res, $userinput);
4849:): } else {
4850:): if ($cipher) {
4851:): my $cmdlength=length($res);
4852:): $res.=" ";
4853:): my $encres='';
4854:): for (my $encidx=0;$encidx<=$cmdlength;$encidx+=8) {
4855:): $encres.= unpack("H16",
4856:): $cipher->encrypt(substr($res,
4857:): $encidx,
4858:): 8)));
4859:): }
4860:): &Reply( $client,"enc:$cmdlength:$encres\n",$userinput);
4861:): } else {
4862:): &Failure( $client, "error:no_key\n",$userinput);
4863:): }
4864:): }
4865:): return 1;
4866:): }
4867:): ®ister_handler("lti", \<i_handler, 1, 1, 0);
4868:):
4869:): #
4870:): # Data for LTI payload (received encrypted) are unencrypted and
4871:): # then signed with the appropriate key and secret, before re-encrypting
4872:): # the signed payload which is sent to the client for unencryption by
4873:): # the caller: lonnet::sign_lti()) before dispatch either to a web browser
4874:): # (launch) or to a remote web service (roster, logout, or grade).
4875:): #
4876:): # Parameters:
4877:): # $cmd - Command request keyword (signlti).
4878:): # $tail - Tail of the command. This is a colon-separated list
4879:): # consisting of the domain, coursenum (if for an External
4880:): # Tool defined in a course), crsdef (true if defined in
4881:): # a course), type (linkprot or lti),
4882:): # context (launch, roster, logout, or grade),
4883:): # escaped launch URL, numeric ID of external tool,
4884:): # version number for encryption key (if tool's LTI secret was
4885:): # encrypted before storing), a frozen hash of LTI launch
4886:): # parameters, and a frozen hash of LTI information,
4887:): # (e.g., method => 'HMAC-SHA1',
4888:): # respfmt => 'to_authorization_header').
4889:): # $client - File descriptor open on the client.
4890:): # Returns:
4891:): # 1 - Continue processing.
4892:): # 0 - Exit.
4893:): # Side effects:
4894:): # The reply will contain the LTI payload, as & separated key=value pairs,
4895:): # where value is itself a frozen hash, if the required key and secret
4896:): # for the apecific tool ID are available. The payload data are retrieved from
4897:): # a call to Lond::sign_lti_payload(), and the reply is encrypted before being
4898:): # written to $client.
4899:): #
4900:): sub sign_lti_handler {
4901:): my ($cmd, $tail, $client) = @_;
4902:):
4903:): my $userinput = "$cmd:$tail";
4904:):
4905:): my ($cdom,$cnum,$crsdef,$type,$context,$escurl,
4906:): $ltinum,$keynum,$paramsref,$inforef) = split(/:/,$tail);
4907:): my $url = &unescape($escurl);
4908:): my $params = &Apache::lonnet::thaw_unescape($paramsref);
4909:): my $info = &Apache::lonnet::thaw_unescape($inforef);
4910:): my $res =
4911:): &LONCAPA::Lond::sign_lti_payload($cdom,$cnum,$crsdef,$type,$context,$url,$ltinum,
4912:): $keynum,$perlvar{'lonVersion'},$params,$info);
4913:): my $result;
4914:): if (ref($res) eq 'HASH') {
4915:): foreach my $key (keys(%{$res})) {
4916:): $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($res->{$key}).'&';
4917:): }
4918:): $result =~ s/\&$//;
4919:): } else {
4920:): $result = $res;
4921:): }
4922:): if ($result =~ /^error:/) {
4923:): &Failure($client, \$result, $userinput);
4924:): } else {
4925:): if ($cipher) {
4926:): my $cmdlength=length($result);
4927:): $result.=" ";
4928:): my $encres='';
4929:): for (my $encidx=0;$encidx<=$cmdlength;$encidx+=8) {
4930:): $encres.= unpack("H16",
4931:): $cipher->encrypt(substr($result,
4932:): $encidx,
4933:): 8)));
4934:): }
4935:): &Reply( $client,"enc:$cmdlength:$encres\n",$userinput);
4936:): } else {
4937:): &Failure( $client, "error:no_key\n",$userinput);
4938:): }
4939:): }
4940:): return 1;
4941:): }
4942:): ®ister_handler("signlti", \&sign_lti_handler, 1, 1, 0);
4943:):
4944:): #
1.238 foxr 4945: # Puts an id to a domains id database.
4946: #
4947: # Parameters:
4948: # $cmd - The command that triggered us.
4949: # $tail - Remainder of the request other than the command. This is a
4950: # colon separated list containing:
4951: # $domain - The domain for which we are writing the id.
4952: # $pairs - The id info to write... this is and & separated list
4953: # of keyword=value.
4954: # $client - Socket open on the client.
4955: # Returns:
4956: # 1 - Continue processing.
4957: # Side effects:
4958: # reply is written to $client.
4959: #
4960: sub put_id_handler {
4961: my ($cmd,$tail,$client) = @_;
4962:
4963:
4964: my $userinput = "$cmd:$tail";
4965:
4966: my ($udom,$what)=split(/:/,$tail);
4967: chomp($what);
4968: my @pairs=split(/\&/,$what);
4969: my $hashref = &tie_domain_hash($udom, "ids", &GDBM_WRCREAT(),
4970: "P", $what);
4971: if ($hashref) {
4972: foreach my $pair (@pairs) {
4973: my ($key,$value)=split(/=/,$pair);
4974: $hashref->{$key}=$value;
4975: }
1.311 albertel 4976: if (&untie_domain_hash($hashref)) {
1.238 foxr 4977: &Reply($client, "ok\n", $userinput);
4978: } else {
4979: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4980: "while attempting idput\n", $userinput);
4981: }
4982: } else {
4983: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
4984: "while attempting idput\n", $userinput);
4985: }
4986:
4987: return 1;
4988: }
1.263 albertel 4989: ®ister_handler("idput", \&put_id_handler, 0, 1, 0);
1.238 foxr 4990:
4991: #
4992: # Retrieves a set of id values from the id database.
4993: # Returns an & separated list of results, one for each requested id to the
4994: # client.
4995: #
4996: # Parameters:
4997: # $cmd - Command keyword that caused us to be dispatched.
4998: # $tail - Tail of the command. Consists of a colon separated:
4999: # domain - the domain whose id table we dump
5000: # ids Consists of an & separated list of
5001: # id keywords whose values will be fetched.
5002: # nonexisting keywords will have an empty value.
5003: # $client - Socket open on the client.
5004: #
5005: # Returns:
5006: # 1 - indicating processing should continue.
5007: # Side effects:
5008: # An & separated list of results is written to $client.
5009: #
5010: sub get_id_handler {
5011: my ($cmd, $tail, $client) = @_;
5012:
5013:
5014: my $userinput = "$client:$tail";
5015:
5016: my ($udom,$what)=split(/:/,$tail);
5017: chomp($what);
5018: my @queries=split(/\&/,$what);
5019: my $qresult='';
5020: my $hashref = &tie_domain_hash($udom, "ids", &GDBM_READER());
5021: if ($hashref) {
5022: for (my $i=0;$i<=$#queries;$i++) {
5023: $qresult.="$hashref->{$queries[$i]}&";
5024: }
1.311 albertel 5025: if (&untie_domain_hash($hashref)) {
1.238 foxr 5026: $qresult=~s/\&$//;
1.387 albertel 5027: &Reply($client, \$qresult, $userinput);
1.238 foxr 5028: } else {
5029: &Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ".
5030: "while attempting idget\n",$userinput);
5031: }
5032: } else {
5033: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
5034: "while attempting idget\n",$userinput);
5035: }
5036:
5037: return 1;
5038: }
1.263 albertel 5039: ®ister_handler("idget", \&get_id_handler, 0, 1, 0);
1.238 foxr 5040:
1.489.2.7 raeburn 5041: # Deletes one or more ids in a domain's id database.
1.489.2.6 raeburn 5042: #
5043: # Parameters:
5044: # $cmd - Command keyword (iddel).
5045: # $tail - Command tail. In this case a colon
5046: # separated list containing:
5047: # The domain for which we are deleting the id(s).
5048: # &-separated list of id(s) to delete.
5049: # $client - File open on client socket.
5050: # Returns:
5051: # 1 - Continue processing
5052: # 0 - Exit server.
5053: #
5054: #
5055:
5056: sub del_id_handler {
5057: my ($cmd,$tail,$client) = @_;
5058:
5059: my $userinput = "$cmd:$tail";
5060:
5061: my ($udom,$what)=split(/:/,$tail);
5062: chomp($what);
5063: my $hashref = &tie_domain_hash($udom, "ids", &GDBM_WRCREAT(),
5064: "D", $what);
5065: if ($hashref) {
5066: my @keys=split(/\&/,$what);
5067: foreach my $key (@keys) {
5068: delete($hashref->{$key});
5069: }
5070: if (&untie_user_hash($hashref)) {
5071: &Reply($client, "ok\n", $userinput);
5072: } else {
5073: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
5074: "while attempting iddel\n", $userinput);
5075: }
5076: } else {
5077: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
5078: "while attempting iddel\n", $userinput);
5079: }
5080: return 1;
5081: }
5082: ®ister_handler("iddel", \&del_id_handler, 0, 1, 0);
5083:
1.238 foxr 5084: #
1.299 raeburn 5085: # Puts broadcast e-mail sent by Domain Coordinator in nohist_dcmail database
5086: #
5087: # Parameters
5088: # $cmd - Command keyword that caused us to be dispatched.
5089: # $tail - Tail of the command. Consists of a colon separated:
5090: # domain - the domain whose dcmail we are recording
5091: # email Consists of key=value pair
5092: # where key is unique msgid
5093: # and value is message (in XML)
5094: # $client - Socket open on the client.
5095: #
5096: # Returns:
5097: # 1 - indicating processing should continue.
5098: # Side effects
5099: # reply is written to $client.
5100: #
5101: sub put_dcmail_handler {
5102: my ($cmd,$tail,$client) = @_;
5103: my $userinput = "$cmd:$tail";
1.463 foxr 5104:
5105:
1.299 raeburn 5106: my ($udom,$what)=split(/:/,$tail);
5107: chomp($what);
5108: my $hashref = &tie_domain_hash($udom, "nohist_dcmail", &GDBM_WRCREAT());
5109: if ($hashref) {
5110: my ($key,$value)=split(/=/,$what);
5111: $hashref->{$key}=$value;
5112: }
1.311 albertel 5113: if (&untie_domain_hash($hashref)) {
1.299 raeburn 5114: &Reply($client, "ok\n", $userinput);
5115: } else {
5116: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
5117: "while attempting dcmailput\n", $userinput);
5118: }
5119: return 1;
5120: }
5121: ®ister_handler("dcmailput", \&put_dcmail_handler, 0, 1, 0);
5122:
5123: #
5124: # Retrieves broadcast e-mail from nohist_dcmail database
5125: # Returns to client an & separated list of key=value pairs,
5126: # where key is msgid and value is message information.
5127: #
5128: # Parameters
5129: # $cmd - Command keyword that caused us to be dispatched.
5130: # $tail - Tail of the command. Consists of a colon separated:
5131: # domain - the domain whose dcmail table we dump
5132: # startfilter - beginning of time window
5133: # endfilter - end of time window
5134: # sendersfilter - & separated list of username:domain
5135: # for senders to search for.
5136: # $client - Socket open on the client.
5137: #
5138: # Returns:
5139: # 1 - indicating processing should continue.
5140: # Side effects
5141: # reply (& separated list of msgid=messageinfo pairs) is
5142: # written to $client.
5143: #
5144: sub dump_dcmail_handler {
5145: my ($cmd, $tail, $client) = @_;
5146:
5147: my $userinput = "$cmd:$tail";
5148: my ($udom,$startfilter,$endfilter,$sendersfilter) = split(/:/,$tail);
5149: chomp($sendersfilter);
5150: my @senders = ();
5151: if (defined($startfilter)) {
5152: $startfilter=&unescape($startfilter);
5153: } else {
5154: $startfilter='.';
5155: }
5156: if (defined($endfilter)) {
5157: $endfilter=&unescape($endfilter);
5158: } else {
5159: $endfilter='.';
5160: }
5161: if (defined($sendersfilter)) {
5162: $sendersfilter=&unescape($sendersfilter);
1.300 albertel 5163: @senders = map { &unescape($_) } split(/\&/,$sendersfilter);
1.299 raeburn 5164: }
5165:
5166: my $qresult='';
5167: my $hashref = &tie_domain_hash($udom, "nohist_dcmail", &GDBM_WRCREAT());
5168: if ($hashref) {
5169: while (my ($key,$value) = each(%$hashref)) {
5170: my $match = 1;
1.303 albertel 5171: my ($timestamp,$subj,$uname,$udom) =
5172: split(/:/,&unescape(&unescape($key)),5); # yes, twice really
1.299 raeburn 5173: $subj = &unescape($subj);
5174: unless ($startfilter eq '.' || !defined($startfilter)) {
5175: if ($timestamp < $startfilter) {
5176: $match = 0;
5177: }
5178: }
5179: unless ($endfilter eq '.' || !defined($endfilter)) {
5180: if ($timestamp > $endfilter) {
5181: $match = 0;
5182: }
5183: }
5184: unless (@senders < 1) {
5185: unless (grep/^$uname:$udom$/,@senders) {
5186: $match = 0;
5187: }
5188: }
5189: if ($match == 1) {
5190: $qresult.=$key.'='.$value.'&';
5191: }
5192: }
1.311 albertel 5193: if (&untie_domain_hash($hashref)) {
1.299 raeburn 5194: chop($qresult);
1.387 albertel 5195: &Reply($client, \$qresult, $userinput);
1.299 raeburn 5196: } else {
5197: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
5198: "while attempting dcmaildump\n", $userinput);
5199: }
5200: } else {
5201: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
5202: "while attempting dcmaildump\n", $userinput);
5203: }
5204: return 1;
5205: }
5206:
5207: ®ister_handler("dcmaildump", \&dump_dcmail_handler, 0, 1, 0);
5208:
5209: #
5210: # Puts domain roles in nohist_domainroles database
5211: #
5212: # Parameters
5213: # $cmd - Command keyword that caused us to be dispatched.
5214: # $tail - Tail of the command. Consists of a colon separated:
5215: # domain - the domain whose roles we are recording
5216: # role - Consists of key=value pair
5217: # where key is unique role
5218: # and value is start/end date information
5219: # $client - Socket open on the client.
5220: #
5221: # Returns:
5222: # 1 - indicating processing should continue.
5223: # Side effects
5224: # reply is written to $client.
5225: #
5226:
5227: sub put_domainroles_handler {
5228: my ($cmd,$tail,$client) = @_;
5229:
5230: my $userinput = "$cmd:$tail";
5231: my ($udom,$what)=split(/:/,$tail);
5232: chomp($what);
5233: my @pairs=split(/\&/,$what);
5234: my $hashref = &tie_domain_hash($udom, "nohist_domainroles", &GDBM_WRCREAT());
5235: if ($hashref) {
5236: foreach my $pair (@pairs) {
5237: my ($key,$value)=split(/=/,$pair);
5238: $hashref->{$key}=$value;
5239: }
1.311 albertel 5240: if (&untie_domain_hash($hashref)) {
1.299 raeburn 5241: &Reply($client, "ok\n", $userinput);
5242: } else {
5243: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
5244: "while attempting domroleput\n", $userinput);
5245: }
5246: } else {
5247: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
5248: "while attempting domroleput\n", $userinput);
5249: }
5250:
5251: return 1;
5252: }
5253:
5254: ®ister_handler("domroleput", \&put_domainroles_handler, 0, 1, 0);
5255:
5256: #
5257: # Retrieves domain roles from nohist_domainroles database
5258: # Returns to client an & separated list of key=value pairs,
5259: # where key is role and value is start and end date information.
5260: #
5261: # Parameters
5262: # $cmd - Command keyword that caused us to be dispatched.
5263: # $tail - Tail of the command. Consists of a colon separated:
5264: # domain - the domain whose domain roles table we dump
5265: # $client - Socket open on the client.
5266: #
5267: # Returns:
5268: # 1 - indicating processing should continue.
5269: # Side effects
5270: # reply (& separated list of role=start/end info pairs) is
5271: # written to $client.
5272: #
5273: sub dump_domainroles_handler {
5274: my ($cmd, $tail, $client) = @_;
5275:
5276: my $userinput = "$cmd:$tail";
5277: my ($udom,$startfilter,$endfilter,$rolesfilter) = split(/:/,$tail);
5278: chomp($rolesfilter);
5279: my @roles = ();
5280: if (defined($startfilter)) {
5281: $startfilter=&unescape($startfilter);
5282: } else {
5283: $startfilter='.';
5284: }
5285: if (defined($endfilter)) {
5286: $endfilter=&unescape($endfilter);
5287: } else {
5288: $endfilter='.';
5289: }
5290: if (defined($rolesfilter)) {
5291: $rolesfilter=&unescape($rolesfilter);
1.300 albertel 5292: @roles = split(/\&/,$rolesfilter);
1.299 raeburn 5293: }
1.421 raeburn 5294:
1.299 raeburn 5295: my $hashref = &tie_domain_hash($udom, "nohist_domainroles", &GDBM_WRCREAT());
5296: if ($hashref) {
5297: my $qresult = '';
5298: while (my ($key,$value) = each(%$hashref)) {
5299: my $match = 1;
1.421 raeburn 5300: my ($end,$start) = split(/:/,&unescape($value));
1.299 raeburn 5301: my ($trole,$uname,$udom,$runame,$rudom,$rsec) = split(/:/,&unescape($key));
1.421 raeburn 5302: unless (@roles < 1) {
5303: unless (grep/^\Q$trole\E$/,@roles) {
5304: $match = 0;
5305: next;
5306: }
5307: }
1.299 raeburn 5308: unless ($startfilter eq '.' || !defined($startfilter)) {
1.415 raeburn 5309: if ((defined($start)) && ($start >= $startfilter)) {
1.299 raeburn 5310: $match = 0;
1.421 raeburn 5311: next;
1.299 raeburn 5312: }
5313: }
5314: unless ($endfilter eq '.' || !defined($endfilter)) {
1.421 raeburn 5315: if ((defined($end)) && (($end > 0) && ($end <= $endfilter))) {
1.299 raeburn 5316: $match = 0;
1.421 raeburn 5317: next;
1.299 raeburn 5318: }
5319: }
5320: if ($match == 1) {
5321: $qresult.=$key.'='.$value.'&';
5322: }
5323: }
1.311 albertel 5324: if (&untie_domain_hash($hashref)) {
1.299 raeburn 5325: chop($qresult);
1.387 albertel 5326: &Reply($client, \$qresult, $userinput);
1.299 raeburn 5327: } else {
5328: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
5329: "while attempting domrolesdump\n", $userinput);
5330: }
5331: } else {
5332: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
5333: "while attempting domrolesdump\n", $userinput);
5334: }
5335: return 1;
5336: }
5337:
5338: ®ister_handler("domrolesdump", \&dump_domainroles_handler, 0, 1, 0);
5339:
5340:
1.238 foxr 5341: # Process the tmpput command I'm not sure what this does.. Seems to
5342: # create a file in the lonDaemons/tmp directory of the form $id.tmp
5343: # where Id is the client's ip concatenated with a sequence number.
5344: # The file will contain some value that is passed in. Is this e.g.
5345: # a login token?
5346: #
5347: # Parameters:
5348: # $cmd - The command that got us dispatched.
5349: # $tail - The remainder of the request following $cmd:
5350: # In this case this will be the contents of the file.
5351: # $client - Socket connected to the client.
5352: # Returns:
5353: # 1 indicating processing can continue.
5354: # Side effects:
5355: # A file is created in the local filesystem.
5356: # A reply is sent to the client.
5357: sub tmp_put_handler {
5358: my ($cmd, $what, $client) = @_;
5359:
5360: my $userinput = "$cmd:$what"; # Reconstruct for logging.
5361:
1.347 raeburn 5362: my ($record,$context) = split(/:/,$what);
5363: if ($context ne '') {
5364: chomp($context);
5365: $context = &unescape($context);
5366: }
5367: my ($id,$store);
1.238 foxr 5368: $tmpsnum++;
1.489.2.42 raeburn 5369: my $numtries = 0;
5370: my $execdir=$perlvar{'lonDaemons'};
5371: if (($context eq 'resetpw') || ($context eq 'createaccount') ||
5372: ($context eq 'sso') || ($context eq 'link') || ($context eq 'retry')) {
5373: $id = &md5_hex(&md5_hex(time.{}.rand().$$.$tmpsnum));
5374: while ((-e "$execdir/tmp/$id.tmp") && ($numtries <10)) {
5375: undef($id);
5376: $id = &md5_hex(&md5_hex(time.{}.rand().$$.$tmpsnum));
5377: $numtries ++;
5378: }
1.347 raeburn 5379: } else {
5380: $id = $$.'_'.$clientip.'_'.$tmpsnum;
5381: }
1.238 foxr 5382: $id=~s/\W/\_/g;
1.347 raeburn 5383: $record=~s/\n//g;
1.489.2.42 raeburn 5384: if (($id ne '') &&
5385: ($store=IO::File->new(">$execdir/tmp/$id.tmp"))) {
1.347 raeburn 5386: print $store $record;
1.238 foxr 5387: close $store;
1.387 albertel 5388: &Reply($client, \$id, $userinput);
1.238 foxr 5389: } else {
5390: &Failure( $client, "error: ".($!+0)."IO::File->new Failed ".
5391: "while attempting tmpput\n", $userinput);
5392: }
5393: return 1;
5394:
5395: }
5396: ®ister_handler("tmpput", \&tmp_put_handler, 0, 1, 0);
1.263 albertel 5397:
1.238 foxr 5398: # Processes the tmpget command. This command returns the contents
5399: # of a temporary resource file(?) created via tmpput.
5400: #
5401: # Paramters:
5402: # $cmd - Command that got us dispatched.
5403: # $id - Tail of the command, contain the id of the resource
5404: # we want to fetch.
5405: # $client - socket open on the client.
5406: # Return:
5407: # 1 - Inidcating processing can continue.
5408: # Side effects:
5409: # A reply is sent to the client.
5410: #
5411: sub tmp_get_handler {
5412: my ($cmd, $id, $client) = @_;
5413:
5414: my $userinput = "$cmd:$id";
5415:
5416:
5417: $id=~s/\W/\_/g;
5418: my $store;
5419: my $execdir=$perlvar{'lonDaemons'};
5420: if ($store=IO::File->new("$execdir/tmp/$id.tmp")) {
5421: my $reply=<$store>;
1.387 albertel 5422: &Reply( $client, \$reply, $userinput);
1.238 foxr 5423: close $store;
5424: } else {
5425: &Failure( $client, "error: ".($!+0)."IO::File->new Failed ".
5426: "while attempting tmpget\n", $userinput);
5427: }
5428:
5429: return 1;
5430: }
5431: ®ister_handler("tmpget", \&tmp_get_handler, 0, 1, 0);
1.263 albertel 5432:
1.238 foxr 5433: #
5434: # Process the tmpdel command. This command deletes a temp resource
5435: # created by the tmpput command.
5436: #
5437: # Parameters:
5438: # $cmd - Command that got us here.
5439: # $id - Id of the temporary resource created.
5440: # $client - socket open on the client process.
5441: #
5442: # Returns:
5443: # 1 - Indicating processing should continue.
5444: # Side Effects:
5445: # A file is deleted
5446: # A reply is sent to the client.
5447: sub tmp_del_handler {
5448: my ($cmd, $id, $client) = @_;
5449:
5450: my $userinput= "$cmd:$id";
5451:
5452: chomp($id);
5453: $id=~s/\W/\_/g;
5454: my $execdir=$perlvar{'lonDaemons'};
5455: if (unlink("$execdir/tmp/$id.tmp")) {
5456: &Reply($client, "ok\n", $userinput);
5457: } else {
5458: &Failure( $client, "error: ".($!+0)."Unlink tmp Failed ".
5459: "while attempting tmpdel\n", $userinput);
5460: }
5461:
5462: return 1;
5463:
5464: }
5465: ®ister_handler("tmpdel", \&tmp_del_handler, 0, 1, 0);
1.263 albertel 5466:
1.238 foxr 5467: #
1.489.2.39 raeburn 5468: # Process the updatebalcookie command. This command updates a
5469: # cookie in the lonBalancedir directory on a load balancer node.
5470: #
5471: # Parameters:
5472: # $cmd - Command that got us here.
5473: # $tail - Tail of the request (escaped cookie: escaped current entry)
5474: #
5475: # $client - socket open on the client process.
5476: #
5477: # Returns:
5478: # 1 - Indicating processing should continue.
5479: # Side Effects:
5480: # A cookie file is updated from the lonBalancedir directory
5481: # A reply is sent to the client.
5482: #
5483: sub update_balcookie_handler {
5484: my ($cmd, $tail, $client) = @_;
5485:
5486: my $userinput= "$cmd:$tail";
5487: chomp($tail);
5488: my ($cookie,$lastentry) = map { &unescape($_) } (split(/:/,$tail));
5489:
5490: my $updatedone;
5491: if ($cookie =~ /^$LONCAPA::match_domain\_$LONCAPA::match_username\_[a-f0-9]{32}$/) {
5492: my $execdir=$perlvar{'lonBalanceDir'};
5493: if (-e "$execdir/$cookie.id") {
5494: my $doupdate;
5495: if (open(my $fh,'<',"$execdir/$cookie.id")) {
5496: while (my $line = <$fh>) {
5497: chomp($line);
5498: if ($line eq $lastentry) {
5499: $doupdate = 1;
5500: last;
5501: }
5502: }
5503: close($fh);
5504: }
5505: if ($doupdate) {
5506: if (open(my $fh,'>',"$execdir/$cookie.id")) {
5507: print $fh $clientname;
5508: close($fh);
5509: $updatedone = 1;
5510: }
5511: }
5512: }
5513: }
5514: if ($updatedone) {
5515: &Reply($client, "ok\n", $userinput);
5516: } else {
5517: &Failure( $client, "error: ".($!+0)."file update failed ".
5518: "while attempting updatebalcookie\n", $userinput);
5519: }
5520: return 1;
5521: }
5522: ®ister_handler("updatebalcookie", \&update_balcookie_handler, 0, 1, 0);
5523:
5524: #
1.489.2.32 raeburn 5525: # Process the delbalcookie command. This command deletes a balancer
1.489.2.39 raeburn 5526: # cookie in the lonBalancedir directory on a load balancer node.
1.489.2.32 raeburn 5527: #
5528: # Parameters:
5529: # $cmd - Command that got us here.
5530: # $cookie - Cookie to be deleted.
5531: # $client - socket open on the client process.
5532: #
5533: # Returns:
5534: # 1 - Indicating processing should continue.
5535: # Side Effects:
5536: # A cookie file is deleted from the lonBalancedir directory
5537: # A reply is sent to the client.
5538: sub del_balcookie_handler {
5539: my ($cmd, $cookie, $client) = @_;
5540:
5541: my $userinput= "$cmd:$cookie";
5542:
5543: chomp($cookie);
1.489.2.39 raeburn 5544: $cookie = &unescape($cookie);
1.489.2.32 raeburn 5545: my $deleted = '';
5546: if ($cookie =~ /^$LONCAPA::match_domain\_$LONCAPA::match_username\_[a-f0-9]{32}$/) {
5547: my $execdir=$perlvar{'lonBalanceDir'};
5548: if (-e "$execdir/$cookie.id") {
5549: if (open(my $fh,'<',"$execdir/$cookie.id")) {
5550: my $dodelete;
5551: while (my $line = <$fh>) {
5552: chomp($line);
5553: if ($line eq $clientname) {
5554: $dodelete = 1;
5555: last;
5556: }
5557: }
5558: close($fh);
5559: if ($dodelete) {
5560: if (unlink("$execdir/$cookie.id")) {
5561: $deleted = 1;
5562: }
5563: }
5564: }
5565: }
5566: }
5567: if ($deleted) {
5568: &Reply($client, "ok\n", $userinput);
5569: } else {
5570: &Failure( $client, "error: ".($!+0)."Unlinking cookie file Failed ".
5571: "while attempting delbalcookie\n", $userinput);
5572: }
5573: return 1;
5574: }
5575: ®ister_handler("delbalcookie", \&del_balcookie_handler, 0, 1, 0);
5576:
5577: #
1.246 foxr 5578: # Processes the setannounce command. This command
5579: # creates a file named announce.txt in the top directory of
5580: # the documentn root and sets its contents. The announce.txt file is
5581: # printed in its entirety at the LonCAPA login page. Note:
5582: # once the announcement.txt fileis created it cannot be deleted.
5583: # However, setting the contents of the file to empty removes the
5584: # announcement from the login page of loncapa so who cares.
5585: #
5586: # Parameters:
5587: # $cmd - The command that got us dispatched.
5588: # $announcement - The text of the announcement.
5589: # $client - Socket open on the client process.
5590: # Retunrns:
5591: # 1 - Indicating request processing should continue
5592: # Side Effects:
5593: # The file {DocRoot}/announcement.txt is created.
5594: # A reply is sent to $client.
5595: #
5596: sub set_announce_handler {
5597: my ($cmd, $announcement, $client) = @_;
5598:
5599: my $userinput = "$cmd:$announcement";
5600:
5601: chomp($announcement);
5602: $announcement=&unescape($announcement);
5603: if (my $store=IO::File->new('>'.$perlvar{'lonDocRoot'}.
5604: '/announcement.txt')) {
5605: print $store $announcement;
5606: close $store;
5607: &Reply($client, "ok\n", $userinput);
5608: } else {
5609: &Failure($client, "error: ".($!+0)."\n", $userinput);
5610: }
5611:
5612: return 1;
5613: }
5614: ®ister_handler("setannounce", \&set_announce_handler, 0, 1, 0);
1.263 albertel 5615:
1.246 foxr 5616: #
5617: # Return the version of the daemon. This can be used to determine
5618: # the compatibility of cross version installations or, alternatively to
5619: # simply know who's out of date and who isn't. Note that the version
5620: # is returned concatenated with the tail.
5621: # Parameters:
5622: # $cmd - the request that dispatched to us.
5623: # $tail - Tail of the request (client's version?).
5624: # $client - Socket open on the client.
5625: #Returns:
5626: # 1 - continue processing requests.
5627: # Side Effects:
5628: # Replies with version to $client.
5629: sub get_version_handler {
5630: my ($cmd, $tail, $client) = @_;
5631:
5632: my $userinput = $cmd.$tail;
5633:
5634: &Reply($client, &version($userinput)."\n", $userinput);
5635:
5636:
5637: return 1;
5638: }
5639: ®ister_handler("version", \&get_version_handler, 0, 1, 0);
1.263 albertel 5640:
1.246 foxr 5641: # Set the current host and domain. This is used to support
5642: # multihomed systems. Each IP of the system, or even separate daemons
5643: # on the same IP can be treated as handling a separate lonCAPA virtual
5644: # machine. This command selects the virtual lonCAPA. The client always
5645: # knows the right one since it is lonc and it is selecting the domain/system
5646: # from the hosts.tab file.
5647: # Parameters:
5648: # $cmd - Command that dispatched us.
5649: # $tail - Tail of the command (domain/host requested).
5650: # $socket - Socket open on the client.
5651: #
5652: # Returns:
5653: # 1 - Indicates the program should continue to process requests.
5654: # Side-effects:
5655: # The default domain/system context is modified for this daemon.
5656: # a reply is sent to the client.
5657: #
5658: sub set_virtual_host_handler {
5659: my ($cmd, $tail, $socket) = @_;
5660:
5661: my $userinput ="$cmd:$tail";
5662:
5663: &Reply($client, &sethost($userinput)."\n", $userinput);
5664:
5665:
5666: return 1;
5667: }
1.247 albertel 5668: ®ister_handler("sethost", \&set_virtual_host_handler, 0, 1, 0);
1.246 foxr 5669:
5670: # Process a request to exit:
5671: # - "bye" is sent to the client.
5672: # - The client socket is shutdown and closed.
5673: # - We indicate to the caller that we should exit.
5674: # Formal Parameters:
5675: # $cmd - The command that got us here.
5676: # $tail - Tail of the command (empty).
5677: # $client - Socket open on the tail.
5678: # Returns:
5679: # 0 - Indicating the program should exit!!
5680: #
5681: sub exit_handler {
5682: my ($cmd, $tail, $client) = @_;
5683:
5684: my $userinput = "$cmd:$tail";
5685:
5686: &logthis("Client $clientip ($clientname) hanging up: $userinput");
5687: &Reply($client, "bye\n", $userinput);
5688: $client->shutdown(2); # shutdown the socket forcibly.
5689: $client->close();
5690:
5691: return 0;
5692: }
1.248 foxr 5693: ®ister_handler("exit", \&exit_handler, 0,1,1);
5694: ®ister_handler("init", \&exit_handler, 0,1,1);
5695: ®ister_handler("quit", \&exit_handler, 0,1,1);
5696:
5697: # Determine if auto-enrollment is enabled.
5698: # Note that the original had what I believe to be a defect.
5699: # The original returned 0 if the requestor was not a registerd client.
5700: # It should return "refused".
5701: # Formal Parameters:
5702: # $cmd - The command that invoked us.
5703: # $tail - The tail of the command (Extra command parameters.
5704: # $client - The socket open on the client that issued the request.
5705: # Returns:
5706: # 1 - Indicating processing should continue.
5707: #
5708: sub enrollment_enabled_handler {
5709: my ($cmd, $tail, $client) = @_;
5710: my $userinput = $cmd.":".$tail; # For logging purposes.
5711:
5712:
1.337 albertel 5713: my ($cdom) = split(/:/, $tail, 2); # Domain we're asking about.
5714:
1.248 foxr 5715: my $outcome = &localenroll::run($cdom);
1.387 albertel 5716: &Reply($client, \$outcome, $userinput);
1.248 foxr 5717:
5718: return 1;
5719: }
5720: ®ister_handler("autorun", \&enrollment_enabled_handler, 0, 1, 0);
5721:
1.417 raeburn 5722: #
1.423 raeburn 5723: # Validate an institutional code used for a LON-CAPA course.
1.417 raeburn 5724: #
5725: # Formal Parameters:
5726: # $cmd - The command request that got us dispatched.
5727: # $tail - The tail of the command. In this case,
5728: # this is a colon separated set of words that will be split
5729: # into:
1.424 raeburn 5730: # $dom - The domain for which the check of
5731: # institutional course code will occur.
5732: #
5733: # $instcode - The institutional code for the course
5734: # being requested, or validated for rights
5735: # to request.
5736: #
5737: # $owner - The course requestor (who will be the
5738: # course owner, in the form username:domain
5739: #
1.417 raeburn 5740: # $client - Socket open on the client.
5741: # Returns:
5742: # 1 - Indicating processing should continue.
5743: #
5744: sub validate_instcode_handler {
5745: my ($cmd, $tail, $client) = @_;
5746: my $userinput = "$cmd:$tail";
1.423 raeburn 5747: my ($dom,$instcode,$owner) = split(/:/, $tail);
1.422 raeburn 5748: $instcode = &unescape($instcode);
5749: $owner = &unescape($owner);
1.489.2.3 raeburn 5750: my ($outcome,$description,$credits) =
1.426 raeburn 5751: &localenroll::validate_instcode($dom,$instcode,$owner);
1.489.2.3 raeburn 5752: my $result = &escape($outcome).'&'.&escape($description).'&'.
5753: &escape($credits);
1.426 raeburn 5754: &Reply($client, \$result, $userinput);
1.417 raeburn 5755:
5756: return 1;
5757: }
5758: ®ister_handler("autovalidateinstcode", \&validate_instcode_handler, 0, 1, 0);
5759:
1.489.2.41 raeburn 5760: #
5761: # Validate co-owner for cross-listed institutional code and
5762: # institutional course code itself used for a LON-CAPA course.
5763: #
5764: # Formal Parameters:
5765: # $cmd - The command request that got us dispatched.
5766: # $tail - The tail of the command. In this case,
5767: # this is a colon separated string containing:
5768: # $dom - Course's LON-CAPA domain
5769: # $instcode - Institutional course code for the course
5770: # $inst_xlist - Institutional course Id for the crosslisting
5771: # $coowner - Username of co-owner
5772: # (values for all but $dom have been escaped).
5773: #
5774: # $client - Socket open on the client.
5775: # Returns:
5776: # 1 - Indicating processing should continue.
5777: #
5778: sub validate_instcrosslist_handler {
5779: my ($cmd, $tail, $client) = @_;
5780: my $userinput = "$cmd:$tail";
5781: my ($dom,$instcode,$inst_xlist,$coowner) = split(/:/,$tail);
5782: $instcode = &unescape($instcode);
5783: $inst_xlist = &unescape($inst_xlist);
5784: $coowner = &unescape($coowner);
5785: my $outcome = &localenroll::validate_crosslist_access($dom,$instcode,
5786: $inst_xlist,$coowner);
5787: &Reply($client, \$outcome, $userinput);
5788:
5789: return 1;
5790: }
5791: ®ister_handler("autovalidateinstcrosslist", \&validate_instcrosslist_handler, 0, 1, 0);
5792:
1.248 foxr 5793: # Get the official sections for which auto-enrollment is possible.
5794: # Since the admin people won't know about 'unofficial sections'
5795: # we cannot auto-enroll on them.
5796: # Formal Parameters:
5797: # $cmd - The command request that got us dispatched here.
5798: # $tail - The remainder of the request. In our case this
5799: # will be split into:
5800: # $coursecode - The course name from the admin point of view.
5801: # $cdom - The course's domain(?).
5802: # $client - Socket open on the client.
5803: # Returns:
5804: # 1 - Indiciting processing should continue.
5805: #
5806: sub get_sections_handler {
5807: my ($cmd, $tail, $client) = @_;
5808: my $userinput = "$cmd:$tail";
5809:
5810: my ($coursecode, $cdom) = split(/:/, $tail);
5811: my @secs = &localenroll::get_sections($coursecode,$cdom);
5812: my $seclist = &escape(join(':',@secs));
5813:
1.387 albertel 5814: &Reply($client, \$seclist, $userinput);
1.248 foxr 5815:
5816:
5817: return 1;
5818: }
5819: ®ister_handler("autogetsections", \&get_sections_handler, 0, 1, 0);
5820:
5821: # Validate the owner of a new course section.
5822: #
5823: # Formal Parameters:
5824: # $cmd - Command that got us dispatched.
5825: # $tail - the remainder of the command. For us this consists of a
5826: # colon separated string containing:
5827: # $inst - Course Id from the institutions point of view.
5828: # $owner - Proposed owner of the course.
5829: # $cdom - Domain of the course (from the institutions
5830: # point of view?)..
5831: # $client - Socket open on the client.
5832: #
5833: # Returns:
5834: # 1 - Processing should continue.
5835: #
5836: sub validate_course_owner_handler {
5837: my ($cmd, $tail, $client) = @_;
5838: my $userinput = "$cmd:$tail";
1.470 raeburn 5839: my ($inst_course_id, $owner, $cdom, $coowners) = split(/:/, $tail);
5840:
1.336 raeburn 5841: $owner = &unescape($owner);
1.470 raeburn 5842: $coowners = &unescape($coowners);
5843: my $outcome = &localenroll::new_course($inst_course_id,$owner,$cdom,$coowners);
1.387 albertel 5844: &Reply($client, \$outcome, $userinput);
1.248 foxr 5845:
5846:
5847:
5848: return 1;
5849: }
5850: ®ister_handler("autonewcourse", \&validate_course_owner_handler, 0, 1, 0);
1.263 albertel 5851:
1.248 foxr 5852: #
5853: # Validate a course section in the official schedule of classes
5854: # from the institutions point of view (part of autoenrollment).
5855: #
5856: # Formal Parameters:
5857: # $cmd - The command request that got us dispatched.
5858: # $tail - The tail of the command. In this case,
5859: # this is a colon separated set of words that will be split
5860: # into:
5861: # $inst_course_id - The course/section id from the
5862: # institutions point of view.
5863: # $cdom - The domain from the institutions
5864: # point of view.
5865: # $client - Socket open on the client.
5866: # Returns:
5867: # 1 - Indicating processing should continue.
5868: #
5869: sub validate_course_section_handler {
5870: my ($cmd, $tail, $client) = @_;
5871: my $userinput = "$cmd:$tail";
5872: my ($inst_course_id, $cdom) = split(/:/, $tail);
5873:
5874: my $outcome=&localenroll::validate_courseID($inst_course_id,$cdom);
1.387 albertel 5875: &Reply($client, \$outcome, $userinput);
1.248 foxr 5876:
5877:
5878: return 1;
5879: }
5880: ®ister_handler("autovalidatecourse", \&validate_course_section_handler, 0, 1, 0);
5881:
5882: #
1.340 raeburn 5883: # Validate course owner's access to enrollment data for specific class section.
5884: #
5885: #
5886: # Formal Parameters:
5887: # $cmd - The command request that got us dispatched.
5888: # $tail - The tail of the command. In this case this is a colon separated
1.489.2.29 raeburn 5889: # set of values that will be split into:
1.340 raeburn 5890: # $inst_class - Institutional code for the specific class section
1.489.2.29 raeburn 5891: # $ownerlist - An escaped comma-separated list of username:domain
5892: # of the course owner, and co-owner(s).
1.340 raeburn 5893: # $cdom - The domain of the course from the institution's
5894: # point of view.
5895: # $client - The socket open on the client.
5896: # Returns:
5897: # 1 - continue processing.
5898: #
5899:
5900: sub validate_class_access_handler {
5901: my ($cmd, $tail, $client) = @_;
5902: my $userinput = "$cmd:$tail";
1.383 raeburn 5903: my ($inst_class,$ownerlist,$cdom) = split(/:/, $tail);
1.392 raeburn 5904: my $owners = &unescape($ownerlist);
1.341 albertel 5905: my $outcome;
5906: eval {
5907: local($SIG{__DIE__})='DEFAULT';
1.392 raeburn 5908: $outcome=&localenroll::check_section($inst_class,$owners,$cdom);
1.341 albertel 5909: };
1.387 albertel 5910: &Reply($client,\$outcome, $userinput);
1.340 raeburn 5911:
5912: return 1;
5913: }
5914: ®ister_handler("autovalidateclass_sec", \&validate_class_access_handler, 0, 1, 0);
5915:
5916: #
1.489.2.41 raeburn 5917: # Modify institutional sections (using customized &instsec_reformat()
5918: # routine in localenroll.pm), to either clutter or declutter, for
5919: # purposes of ensuring an institutional course section (string) can
5920: # be unambiguously separated into institutional course and section.
5921: #
5922: # Formal Parameters:
5923: # $cmd - The command request that got us dispatched.
5924: # $tail - The tail of the command. In this case this is a colon separated
5925: # set of values that will be split into:
5926: # $cdom - The LON-CAPA domain of the course.
5927: # $action - Either: clutter or declutter
5928: # clutter adds character(s) to eliminate ambiguity
5929: # declutter removes the added characters (e.g., for
5930: # display of the institutional course section string.
5931: # $info - A frozen hash in which keys are:
5932: # LON-CAPA course number:Institutional course code
5933: # and values are a reference to an array of the
5934: # items to modify -- either institutional sections,
5935: # or institutional course sections (for crosslistings).
5936: # $client - The socket open on the client.
5937: # Returns:
5938: # 1 - continue processing.
5939: #
5940:
5941: sub instsec_reformat_handler {
5942: my ($cmd, $tail, $client) = @_;
5943: my $userinput = "$cmd:$tail";
5944: my ($cdom,$action,$info) = split(/:/,$tail);
5945: my $instsecref = &Apache::lonnet::thaw_unescape($info);
5946: my ($outcome,$result);
5947: eval {
5948: local($SIG{__DIE__})='DEFAULT';
5949: $outcome=&localenroll::instsec_reformat($cdom,$action,$instsecref);
5950: if ($outcome eq 'ok') {
5951: if (ref($instsecref) eq 'HASH') {
5952: foreach my $key (keys(%{$instsecref})) {
5953: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($instsecref->{$key}).'&';
5954: }
5955: $result =~ s/\&$//;
5956: }
5957: }
5958: };
5959: if (!$@) {
5960: if ($outcome eq 'ok') {
5961: &Reply( $client, \$result, $userinput);
5962: } else {
5963: &Reply($client,\$outcome, $userinput);
5964: }
5965: } else {
5966: &Failure($client,"unknown_cmd\n",$userinput);
5967: }
5968: return 1;
5969: }
5970: ®ister_handler("autoinstsecreformat",\&instsec_reformat_handler, 0, 1, 0);
5971:
5972: #
1.489.2.29 raeburn 5973: # Validate course owner or co-owners(s) access to enrollment data for all sections
5974: # and crosslistings for a particular course.
5975: #
5976: #
5977: # Formal Parameters:
5978: # $cmd - The command request that got us dispatched.
5979: # $tail - The tail of the command. In this case this is a colon separated
5980: # set of values that will be split into:
5981: # $ownerlist - An escaped comma-separated list of username:domain
5982: # of the course owner, and co-owner(s).
5983: # $cdom - The domain of the course from the institution's
5984: # point of view.
5985: # $classes - Frozen hash of institutional course sections and
5986: # crosslistings.
5987: # $client - The socket open on the client.
5988: # Returns:
5989: # 1 - continue processing.
5990: #
5991:
5992: sub validate_classes_handler {
5993: my ($cmd, $tail, $client) = @_;
5994: my $userinput = "$cmd:$tail";
5995: my ($ownerlist,$cdom,$classes) = split(/:/, $tail);
5996: my $classesref = &Apache::lonnet::thaw_unescape($classes);
5997: my $owners = &unescape($ownerlist);
5998: my $result;
5999: eval {
6000: local($SIG{__DIE__})='DEFAULT';
6001: my %validations;
6002: my $response = &localenroll::check_instclasses($owners,$cdom,$classesref,
6003: \%validations);
6004: if ($response eq 'ok') {
6005: foreach my $key (keys(%validations)) {
6006: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($validations{$key}).'&';
6007: }
6008: $result =~ s/\&$//;
6009: } else {
6010: $result = 'error';
6011: }
6012: };
6013: if (!$@) {
6014: &Reply($client, \$result, $userinput);
6015: } else {
6016: &Failure($client,"unknown_cmd\n",$userinput);
6017: }
6018: return 1;
6019: }
6020: ®ister_handler("autovalidateinstclasses", \&validate_classes_handler, 0, 1, 0);
6021:
6022: #
1.340 raeburn 6023: # Create a password for a new LON-CAPA user added by auto-enrollment.
6024: # Only used for case where authentication method for new user is localauth
1.248 foxr 6025: #
6026: # Formal Parameters:
6027: # $cmd - The command request that got us dispatched.
6028: # $tail - The tail of the command. In this case this is a colon separated
6029: # set of words that will be split into:
1.340 raeburn 6030: # $authparam - An authentication parameter (localauth parameter).
1.248 foxr 6031: # $cdom - The domain of the course from the institution's
6032: # point of view.
6033: # $client - The socket open on the client.
6034: # Returns:
6035: # 1 - continue processing.
6036: #
6037: sub create_auto_enroll_password_handler {
6038: my ($cmd, $tail, $client) = @_;
6039: my $userinput = "$cmd:$tail";
6040:
6041: my ($authparam, $cdom) = split(/:/, $userinput);
6042:
6043: my ($create_passwd,$authchk);
6044: ($authparam,
6045: $create_passwd,
6046: $authchk) = &localenroll::create_password($authparam,$cdom);
6047:
6048: &Reply($client, &escape($authparam.':'.$create_passwd.':'.$authchk)."\n",
6049: $userinput);
6050:
6051:
6052: return 1;
6053: }
6054: ®ister_handler("autocreatepassword", \&create_auto_enroll_password_handler,
6055: 0, 1, 0);
6056:
1.489.2.22 raeburn 6057: sub auto_export_grades_handler {
6058: my ($cmd, $tail, $client) = @_;
6059: my $userinput = "$cmd:$tail";
6060: my ($cdom,$cnum,$info,$data) = split(/:/,$tail);
6061: my $inforef = &Apache::lonnet::thaw_unescape($info);
6062: my $dataref = &Apache::lonnet::thaw_unescape($data);
6063: my ($outcome,$result);;
6064: eval {
6065: local($SIG{__DIE__})='DEFAULT';
6066: my %rtnhash;
6067: $outcome=&localenroll::export_grades($cdom,$cnum,$inforef,$dataref,\%rtnhash);
6068: if ($outcome eq 'ok') {
6069: foreach my $key (keys(%rtnhash)) {
6070: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($rtnhash{$key}).'&';
6071: }
6072: $result =~ s/\&$//;
6073: }
6074: };
6075: if (!$@) {
6076: if ($outcome eq 'ok') {
6077: if ($cipher) {
6078: my $cmdlength=length($result);
6079: $result.=" ";
6080: my $encresult='';
6081: for (my $encidx=0;$encidx<=$cmdlength;$encidx+=8) {
6082: $encresult.= unpack("H16",
6083: $cipher->encrypt(substr($result,
6084: $encidx,
6085: 8)));
6086: }
6087: &Reply( $client, "enc:$cmdlength:$encresult\n", $userinput);
6088: } else {
6089: &Failure( $client, "error:no_key\n", $userinput);
6090: }
6091: } else {
6092: &Reply($client, "$outcome\n", $userinput);
6093: }
6094: } else {
6095: &Failure($client,"export_error\n",$userinput);
6096: }
6097: return 1;
6098: }
6099: ®ister_handler("autoexportgrades", \&auto_export_grades_handler,
1.489.2.35 raeburn 6100: 1, 1, 0);
1.489.2.22 raeburn 6101:
6102:
1.248 foxr 6103: # Retrieve and remove temporary files created by/during autoenrollment.
6104: #
6105: # Formal Parameters:
6106: # $cmd - The command that got us dispatched.
6107: # $tail - The tail of the command. In our case this is a colon
6108: # separated list that will be split into:
1.489.2.24 raeburn 6109: # $filename - The name of the file to retrieve.
1.248 foxr 6110: # The filename is given as a path relative to
6111: # the LonCAPA temp file directory.
6112: # $client - Socket open on the client.
6113: #
6114: # Returns:
6115: # 1 - Continue processing.
6116: sub retrieve_auto_file_handler {
6117: my ($cmd, $tail, $client) = @_;
6118: my $userinput = "cmd:$tail";
6119:
6120: my ($filename) = split(/:/, $tail);
6121:
6122: my $source = $perlvar{'lonDaemons'}.'/tmp/'.$filename;
1.489.2.20 raeburn 6123: if ($filename =~m{/\.\./}) {
6124: &Failure($client, "refused\n", $userinput);
1.489.2.24 raeburn 6125: } elsif ($filename !~ /^$LONCAPA::match_domain\_$LONCAPA::match_courseid\_.+_classlist\.xml$/) {
6126: &Failure($client, "refused\n", $userinput);
1.489.2.20 raeburn 6127: } elsif ( (-e $source) && ($filename ne '') ) {
1.248 foxr 6128: my $reply = '';
6129: if (open(my $fh,$source)) {
6130: while (<$fh>) {
6131: chomp($_);
6132: $_ =~ s/^\s+//g;
6133: $_ =~ s/\s+$//g;
6134: $reply .= $_;
6135: }
6136: close($fh);
6137: &Reply($client, &escape($reply)."\n", $userinput);
6138:
6139: # Does this have to be uncommented??!? (RF).
6140: #
6141: # unlink($source);
6142: } else {
6143: &Failure($client, "error\n", $userinput);
6144: }
6145: } else {
6146: &Failure($client, "error\n", $userinput);
6147: }
6148:
6149:
6150: return 1;
6151: }
6152: ®ister_handler("autoretrieve", \&retrieve_auto_file_handler, 0,1,0);
6153:
1.423 raeburn 6154: sub crsreq_checks_handler {
6155: my ($cmd, $tail, $client) = @_;
6156: my $userinput = "$cmd:$tail";
6157: my $dom = $tail;
6158: my $result;
1.489.2.12 raeburn 6159: my @reqtypes = ('official','unofficial','community','textbook');
1.423 raeburn 6160: eval {
6161: local($SIG{__DIE__})='DEFAULT';
6162: my %validations;
1.424 raeburn 6163: my $response = &localenroll::crsreq_checks($dom,\@reqtypes,
6164: \%validations);
1.423 raeburn 6165: if ($response eq 'ok') {
6166: foreach my $key (keys(%validations)) {
6167: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($validations{$key}).'&';
6168: }
6169: $result =~ s/\&$//;
6170: } else {
6171: $result = 'error';
6172: }
6173: };
6174: if (!$@) {
6175: &Reply($client, \$result, $userinput);
6176: } else {
6177: &Failure($client,"unknown_cmd\n",$userinput);
6178: }
6179: return 1;
6180: }
6181: ®ister_handler("autocrsreqchecks", \&crsreq_checks_handler, 0, 1, 0);
6182:
6183: sub validate_crsreq_handler {
6184: my ($cmd, $tail, $client) = @_;
6185: my $userinput = "$cmd:$tail";
1.489.2.13 raeburn 6186: my ($dom,$owner,$crstype,$inststatuslist,$instcode,$instseclist,$customdata) = split(/:/, $tail);
1.423 raeburn 6187: $instcode = &unescape($instcode);
6188: $owner = &unescape($owner);
6189: $crstype = &unescape($crstype);
6190: $inststatuslist = &unescape($inststatuslist);
6191: $instcode = &unescape($instcode);
6192: $instseclist = &unescape($instseclist);
1.489.2.13 raeburn 6193: my $custominfo = &Apache::lonnet::thaw_unescape($customdata);
1.423 raeburn 6194: my $outcome;
6195: eval {
6196: local($SIG{__DIE__})='DEFAULT';
6197: $outcome = &localenroll::validate_crsreq($dom,$owner,$crstype,
6198: $inststatuslist,$instcode,
1.489.2.13 raeburn 6199: $instseclist,$custominfo);
1.423 raeburn 6200: };
6201: if (!$@) {
6202: &Reply($client, \$outcome, $userinput);
6203: } else {
6204: &Failure($client,"unknown_cmd\n",$userinput);
6205: }
6206: return 1;
6207: }
6208: ®ister_handler("autocrsreqvalidation", \&validate_crsreq_handler, 0, 1, 0);
6209:
1.489.2.11 raeburn 6210: sub crsreq_update_handler {
6211: my ($cmd, $tail, $client) = @_;
6212: my $userinput = "$cmd:$tail";
1.489.2.14 raeburn 6213: my ($cdom,$cnum,$crstype,$action,$ownername,$ownerdomain,$fullname,$title,$code,
6214: $accessstart,$accessend,$infohashref) =
1.489.2.11 raeburn 6215: split(/:/, $tail);
6216: $crstype = &unescape($crstype);
6217: $action = &unescape($action);
6218: $ownername = &unescape($ownername);
6219: $ownerdomain = &unescape($ownerdomain);
6220: $fullname = &unescape($fullname);
6221: $title = &unescape($title);
6222: $code = &unescape($code);
1.489.2.14 raeburn 6223: $accessstart = &unescape($accessstart);
6224: $accessend = &unescape($accessend);
1.489.2.11 raeburn 6225: my $incoming = &Apache::lonnet::thaw_unescape($infohashref);
6226: my ($result,$outcome);
6227: eval {
6228: local($SIG{__DIE__})='DEFAULT';
6229: my %rtnhash;
6230: $outcome = &localenroll::crsreq_updates($cdom,$cnum,$crstype,$action,
6231: $ownername,$ownerdomain,$fullname,
1.489.2.14 raeburn 6232: $title,$code,$accessstart,$accessend,
6233: $incoming,\%rtnhash);
1.489.2.11 raeburn 6234: if ($outcome eq 'ok') {
1.489.2.18 raeburn 6235: my @posskeys = qw(createdweb createdmsg createdcustomized createdactions queuedweb queuedmsg formitems reviewweb validationjs onload javascript);
1.489.2.11 raeburn 6236: foreach my $key (keys(%rtnhash)) {
6237: if (grep(/^\Q$key\E/,@posskeys)) {
6238: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($rtnhash{$key}).'&';
6239: }
6240: }
6241: $result =~ s/\&$//;
6242: }
6243: };
6244: if (!$@) {
6245: if ($outcome eq 'ok') {
6246: &Reply($client, \$result, $userinput);
6247: } else {
6248: &Reply($client, "format_error\n", $userinput);
6249: }
6250: } else {
6251: &Failure($client,"unknown_cmd\n",$userinput);
6252: }
6253: return 1;
6254: }
6255: ®ister_handler("autocrsrequpdate", \&crsreq_update_handler, 0, 1, 0);
6256:
1.248 foxr 6257: #
6258: # Read and retrieve institutional code format (for support form).
6259: # Formal Parameters:
6260: # $cmd - Command that dispatched us.
6261: # $tail - Tail of the command. In this case it conatins
6262: # the course domain and the coursename.
6263: # $client - Socket open on the client.
6264: # Returns:
6265: # 1 - Continue processing.
6266: #
6267: sub get_institutional_code_format_handler {
6268: my ($cmd, $tail, $client) = @_;
6269: my $userinput = "$cmd:$tail";
6270:
6271: my $reply;
6272: my($cdom,$course) = split(/:/,$tail);
6273: my @pairs = split/\&/,$course;
6274: my %instcodes = ();
6275: my %codes = ();
6276: my @codetitles = ();
6277: my %cat_titles = ();
6278: my %cat_order = ();
6279: foreach (@pairs) {
6280: my ($key,$value) = split/=/,$_;
6281: $instcodes{&unescape($key)} = &unescape($value);
6282: }
6283: my $formatreply = &localenroll::instcode_format($cdom,
6284: \%instcodes,
6285: \%codes,
6286: \@codetitles,
6287: \%cat_titles,
6288: \%cat_order);
6289: if ($formatreply eq 'ok') {
1.365 albertel 6290: my $codes_str = &Apache::lonnet::hash2str(%codes);
6291: my $codetitles_str = &Apache::lonnet::array2str(@codetitles);
6292: my $cat_titles_str = &Apache::lonnet::hash2str(%cat_titles);
6293: my $cat_order_str = &Apache::lonnet::hash2str(%cat_order);
1.248 foxr 6294: &Reply($client,
6295: $codes_str.':'.$codetitles_str.':'.$cat_titles_str.':'
6296: .$cat_order_str."\n",
6297: $userinput);
6298: } else {
6299: # this else branch added by RF since if not ok, lonc will
6300: # hang waiting on reply until timeout.
6301: #
6302: &Reply($client, "format_error\n", $userinput);
6303: }
6304:
6305: return 1;
6306: }
1.265 albertel 6307: ®ister_handler("autoinstcodeformat",
6308: \&get_institutional_code_format_handler,0,1,0);
1.246 foxr 6309:
1.345 raeburn 6310: sub get_institutional_defaults_handler {
6311: my ($cmd, $tail, $client) = @_;
6312: my $userinput = "$cmd:$tail";
6313:
6314: my $dom = $tail;
6315: my %defaults_hash;
6316: my @code_order;
6317: my $outcome;
6318: eval {
6319: local($SIG{__DIE__})='DEFAULT';
6320: $outcome = &localenroll::instcode_defaults($dom,\%defaults_hash,
6321: \@code_order);
6322: };
6323: if (!$@) {
6324: if ($outcome eq 'ok') {
6325: my $result='';
6326: while (my ($key,$value) = each(%defaults_hash)) {
6327: $result.=&escape($key).'='.&escape($value).'&';
6328: }
6329: $result .= 'code_order='.&escape(join('&',@code_order));
1.387 albertel 6330: &Reply($client,\$result,$userinput);
1.345 raeburn 6331: } else {
6332: &Reply($client,"error\n", $userinput);
6333: }
6334: } else {
6335: &Failure($client,"unknown_cmd\n",$userinput);
6336: }
6337: }
6338: ®ister_handler("autoinstcodedefaults",
6339: \&get_institutional_defaults_handler,0,1,0);
6340:
1.416 raeburn 6341: sub get_possible_instcodes_handler {
6342: my ($cmd, $tail, $client) = @_;
6343: my $userinput = "$cmd:$tail";
6344:
6345: my $reply;
6346: my $cdom = $tail;
1.417 raeburn 6347: my (@codetitles,%cat_titles,%cat_order,@code_order);
1.416 raeburn 6348: my $formatreply = &localenroll::possible_instcodes($cdom,
6349: \@codetitles,
6350: \%cat_titles,
1.417 raeburn 6351: \%cat_order,
6352: \@code_order);
1.416 raeburn 6353: if ($formatreply eq 'ok') {
6354: my $result = join('&',map {&escape($_);} (@codetitles)).':';
1.417 raeburn 6355: $result .= join('&',map {&escape($_);} (@code_order)).':';
1.416 raeburn 6356: foreach my $key (keys(%cat_titles)) {
6357: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($cat_titles{$key}).'&';
6358: }
6359: $result =~ s/\&$//;
6360: $result .= ':';
6361: foreach my $key (keys(%cat_order)) {
6362: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($cat_order{$key}).'&';
6363: }
6364: $result =~ s/\&$//;
6365: &Reply($client,\$result,$userinput);
6366: } else {
6367: &Reply($client, "format_error\n", $userinput);
6368: }
6369: return 1;
6370: }
6371: ®ister_handler("autopossibleinstcodes",
6372: \&get_possible_instcodes_handler,0,1,0);
6373:
1.381 raeburn 6374: sub get_institutional_user_rules {
6375: my ($cmd, $tail, $client) = @_;
6376: my $userinput = "$cmd:$tail";
6377: my $dom = &unescape($tail);
6378: my (%rules_hash,@rules_order);
6379: my $outcome;
6380: eval {
6381: local($SIG{__DIE__})='DEFAULT';
6382: $outcome = &localenroll::username_rules($dom,\%rules_hash,\@rules_order);
6383: };
6384: if (!$@) {
6385: if ($outcome eq 'ok') {
6386: my $result;
6387: foreach my $key (keys(%rules_hash)) {
6388: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($rules_hash{$key}).'&';
6389: }
6390: $result =~ s/\&$//;
6391: $result .= ':';
6392: if (@rules_order > 0) {
6393: foreach my $item (@rules_order) {
6394: $result .= &escape($item).'&';
6395: }
6396: }
6397: $result =~ s/\&$//;
1.387 albertel 6398: &Reply($client,\$result,$userinput);
1.381 raeburn 6399: } else {
6400: &Reply($client,"error\n", $userinput);
6401: }
6402: } else {
6403: &Failure($client,"unknown_cmd\n",$userinput);
6404: }
6405: }
6406: ®ister_handler("instuserrules",\&get_institutional_user_rules,0,1,0);
6407:
1.389 raeburn 6408: sub get_institutional_id_rules {
6409: my ($cmd, $tail, $client) = @_;
6410: my $userinput = "$cmd:$tail";
6411: my $dom = &unescape($tail);
6412: my (%rules_hash,@rules_order);
6413: my $outcome;
6414: eval {
6415: local($SIG{__DIE__})='DEFAULT';
6416: $outcome = &localenroll::id_rules($dom,\%rules_hash,\@rules_order);
6417: };
6418: if (!$@) {
6419: if ($outcome eq 'ok') {
6420: my $result;
6421: foreach my $key (keys(%rules_hash)) {
6422: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($rules_hash{$key}).'&';
6423: }
6424: $result =~ s/\&$//;
6425: $result .= ':';
6426: if (@rules_order > 0) {
6427: foreach my $item (@rules_order) {
6428: $result .= &escape($item).'&';
6429: }
6430: }
6431: $result =~ s/\&$//;
6432: &Reply($client,\$result,$userinput);
6433: } else {
6434: &Reply($client,"error\n", $userinput);
6435: }
6436: } else {
6437: &Failure($client,"unknown_cmd\n",$userinput);
6438: }
6439: }
6440: ®ister_handler("instidrules",\&get_institutional_id_rules,0,1,0);
6441:
1.397 raeburn 6442: sub get_institutional_selfcreate_rules {
1.396 raeburn 6443: my ($cmd, $tail, $client) = @_;
6444: my $userinput = "$cmd:$tail";
6445: my $dom = &unescape($tail);
6446: my (%rules_hash,@rules_order);
6447: my $outcome;
6448: eval {
6449: local($SIG{__DIE__})='DEFAULT';
1.397 raeburn 6450: $outcome = &localenroll::selfcreate_rules($dom,\%rules_hash,\@rules_order);
1.396 raeburn 6451: };
6452: if (!$@) {
6453: if ($outcome eq 'ok') {
6454: my $result;
6455: foreach my $key (keys(%rules_hash)) {
6456: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($rules_hash{$key}).'&';
6457: }
6458: $result =~ s/\&$//;
6459: $result .= ':';
6460: if (@rules_order > 0) {
6461: foreach my $item (@rules_order) {
6462: $result .= &escape($item).'&';
6463: }
6464: }
6465: $result =~ s/\&$//;
6466: &Reply($client,\$result,$userinput);
6467: } else {
6468: &Reply($client,"error\n", $userinput);
6469: }
6470: } else {
6471: &Failure($client,"unknown_cmd\n",$userinput);
6472: }
6473: }
1.397 raeburn 6474: ®ister_handler("instemailrules",\&get_institutional_selfcreate_rules,0,1,0);
1.396 raeburn 6475:
1.489.2.43.2. (raeburn 6476:): sub get_unamemap_rules {
6477:): my ($cmd, $tail, $client) = @_;
6478:): my $userinput = "$cmd:$tail";
6479:): my $dom = &unescape($tail);
6480:): my (%rules_hash,@rules_order);
6481:): my $outcome;
6482:): eval {
6483:): local($SIG{__DIE__})='DEFAULT';
6484:): $outcome = &localenroll::unamemap_rules($dom,\%rules_hash,\@rules_order);
6485:): };
6486:): if (!$@) {
6487:): if ($outcome eq 'ok') {
6488:): my $result;
6489:): foreach my $key (keys(%rules_hash)) {
6490:): $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($rules_hash{$key}).'&';
6491:): }
6492:): $result =~ s/\&$//;
6493:): $result .= ':';
6494:): if (@rules_order > 0) {
6495:): foreach my $item (@rules_order) {
6496:): $result .= &escape($item).'&';
6497:): }
6498:): }
6499:): $result =~ s/\&$//;
6500:): &Reply($client,\$result,$userinput);
6501:): } else {
6502:): &Reply($client,"error\n", $userinput);
6503:): }
6504:): } else {
6505:): &Failure($client,"unknown_cmd\n",$userinput);
6506:): }
6507:): }
6508:): ®ister_handler("unamemaprules",\&get_unamemap_rules,0,1,0);
1.381 raeburn 6509:
6510: sub institutional_username_check {
6511: my ($cmd, $tail, $client) = @_;
6512: my $userinput = "$cmd:$tail";
6513: my %rulecheck;
6514: my $outcome;
6515: my ($udom,$uname,@rules) = split(/:/,$tail);
6516: $udom = &unescape($udom);
6517: $uname = &unescape($uname);
6518: @rules = map {&unescape($_);} (@rules);
6519: eval {
6520: local($SIG{__DIE__})='DEFAULT';
6521: $outcome = &localenroll::username_check($udom,$uname,\@rules,\%rulecheck);
6522: };
6523: if (!$@) {
6524: if ($outcome eq 'ok') {
6525: my $result='';
6526: foreach my $key (keys(%rulecheck)) {
6527: $result.=&escape($key).'='.&Apache::lonnet::freeze_escape($rulecheck{$key}).'&';
6528: }
1.387 albertel 6529: &Reply($client,\$result,$userinput);
1.381 raeburn 6530: } else {
6531: &Reply($client,"error\n", $userinput);
6532: }
6533: } else {
6534: &Failure($client,"unknown_cmd\n",$userinput);
6535: }
6536: }
6537: ®ister_handler("instrulecheck",\&institutional_username_check,0,1,0);
6538:
1.389 raeburn 6539: sub institutional_id_check {
6540: my ($cmd, $tail, $client) = @_;
6541: my $userinput = "$cmd:$tail";
6542: my %rulecheck;
6543: my $outcome;
6544: my ($udom,$id,@rules) = split(/:/,$tail);
6545: $udom = &unescape($udom);
6546: $id = &unescape($id);
6547: @rules = map {&unescape($_);} (@rules);
6548: eval {
6549: local($SIG{__DIE__})='DEFAULT';
6550: $outcome = &localenroll::id_check($udom,$id,\@rules,\%rulecheck);
6551: };
6552: if (!$@) {
6553: if ($outcome eq 'ok') {
6554: my $result='';
6555: foreach my $key (keys(%rulecheck)) {
6556: $result.=&escape($key).'='.&Apache::lonnet::freeze_escape($rulecheck{$key}).'&';
6557: }
6558: &Reply($client,\$result,$userinput);
6559: } else {
6560: &Reply($client,"error\n", $userinput);
6561: }
6562: } else {
6563: &Failure($client,"unknown_cmd\n",$userinput);
6564: }
6565: }
6566: ®ister_handler("instidrulecheck",\&institutional_id_check,0,1,0);
1.345 raeburn 6567:
1.397 raeburn 6568: sub institutional_selfcreate_check {
1.396 raeburn 6569: my ($cmd, $tail, $client) = @_;
6570: my $userinput = "$cmd:$tail";
6571: my %rulecheck;
6572: my $outcome;
6573: my ($udom,$email,@rules) = split(/:/,$tail);
6574: $udom = &unescape($udom);
6575: $email = &unescape($email);
6576: @rules = map {&unescape($_);} (@rules);
6577: eval {
6578: local($SIG{__DIE__})='DEFAULT';
1.397 raeburn 6579: $outcome = &localenroll::selfcreate_check($udom,$email,\@rules,\%rulecheck);
1.396 raeburn 6580: };
6581: if (!$@) {
6582: if ($outcome eq 'ok') {
6583: my $result='';
6584: foreach my $key (keys(%rulecheck)) {
6585: $result.=&escape($key).'='.&Apache::lonnet::freeze_escape($rulecheck{$key}).'&';
6586: }
6587: &Reply($client,\$result,$userinput);
6588: } else {
6589: &Reply($client,"error\n", $userinput);
6590: }
6591: } else {
6592: &Failure($client,"unknown_cmd\n",$userinput);
6593: }
6594: }
1.397 raeburn 6595: ®ister_handler("instselfcreatecheck",\&institutional_selfcreate_check,0,1,0);
1.396 raeburn 6596:
1.317 raeburn 6597: # Get domain specific conditions for import of student photographs to a course
6598: #
6599: # Retrieves information from photo_permission subroutine in localenroll.
6600: # Returns outcome (ok) if no processing errors, and whether course owner is
6601: # required to accept conditions of use (yes/no).
6602: #
6603: #
6604: sub photo_permission_handler {
6605: my ($cmd, $tail, $client) = @_;
6606: my $userinput = "$cmd:$tail";
6607: my $cdom = $tail;
6608: my ($perm_reqd,$conditions);
1.320 albertel 6609: my $outcome;
6610: eval {
6611: local($SIG{__DIE__})='DEFAULT';
6612: $outcome = &localenroll::photo_permission($cdom,\$perm_reqd,
6613: \$conditions);
6614: };
6615: if (!$@) {
6616: &Reply($client, &escape($outcome.':'.$perm_reqd.':'. $conditions)."\n",
6617: $userinput);
6618: } else {
6619: &Failure($client,"unknown_cmd\n",$userinput);
6620: }
6621: return 1;
1.317 raeburn 6622: }
6623: ®ister_handler("autophotopermission",\&photo_permission_handler,0,1,0);
6624:
6625: #
6626: # Checks if student photo is available for a user in the domain, in the user's
6627: # directory (in /userfiles/internal/studentphoto.jpg).
6628: # Uses localstudentphoto:fetch() to ensure there is an up to date copy of
6629: # the student's photo.
6630:
6631: sub photo_check_handler {
6632: my ($cmd, $tail, $client) = @_;
6633: my $userinput = "$cmd:$tail";
6634: my ($udom,$uname,$pid) = split(/:/,$tail);
6635: $udom = &unescape($udom);
6636: $uname = &unescape($uname);
6637: $pid = &unescape($pid);
6638: my $path=&propath($udom,$uname).'/userfiles/internal/';
6639: if (!-e $path) {
6640: &mkpath($path);
6641: }
6642: my $response;
6643: my $result = &localstudentphoto::fetch($udom,$uname,$pid,\$response);
6644: $result .= ':'.$response;
6645: &Reply($client, &escape($result)."\n",$userinput);
1.320 albertel 6646: return 1;
1.317 raeburn 6647: }
6648: ®ister_handler("autophotocheck",\&photo_check_handler,0,1,0);
6649:
6650: #
6651: # Retrieve information from localenroll about whether to provide a button
6652: # for users who have enbled import of student photos to initiate an
6653: # update of photo files for registered students. Also include
6654: # comment to display alongside button.
6655:
6656: sub photo_choice_handler {
6657: my ($cmd, $tail, $client) = @_;
6658: my $userinput = "$cmd:$tail";
6659: my $cdom = &unescape($tail);
1.320 albertel 6660: my ($update,$comment);
6661: eval {
6662: local($SIG{__DIE__})='DEFAULT';
6663: ($update,$comment) = &localenroll::manager_photo_update($cdom);
6664: };
6665: if (!$@) {
6666: &Reply($client,&escape($update).':'.&escape($comment)."\n",$userinput);
6667: } else {
6668: &Failure($client,"unknown_cmd\n",$userinput);
6669: }
6670: return 1;
1.317 raeburn 6671: }
6672: ®ister_handler("autophotochoice",\&photo_choice_handler,0,1,0);
6673:
1.265 albertel 6674: #
6675: # Gets a student's photo to exist (in the correct image type) in the user's
6676: # directory.
6677: # Formal Parameters:
6678: # $cmd - The command request that got us dispatched.
6679: # $tail - A colon separated set of words that will be split into:
6680: # $domain - student's domain
6681: # $uname - student username
6682: # $type - image type desired
6683: # $client - The socket open on the client.
6684: # Returns:
6685: # 1 - continue processing.
1.317 raeburn 6686:
1.265 albertel 6687: sub student_photo_handler {
6688: my ($cmd, $tail, $client) = @_;
1.317 raeburn 6689: my ($domain,$uname,$ext,$type) = split(/:/, $tail);
1.265 albertel 6690:
1.317 raeburn 6691: my $path=&propath($domain,$uname). '/userfiles/internal/';
6692: my $filename = 'studentphoto.'.$ext;
6693: if ($type eq 'thumbnail') {
6694: $filename = 'studentphoto_tn.'.$ext;
6695: }
6696: if (-e $path.$filename) {
1.265 albertel 6697: &Reply($client,"ok\n","$cmd:$tail");
6698: return 1;
6699: }
6700: &mkpath($path);
1.317 raeburn 6701: my $file;
6702: if ($type eq 'thumbnail') {
1.320 albertel 6703: eval {
6704: local($SIG{__DIE__})='DEFAULT';
6705: $file=&localstudentphoto::fetch_thumbnail($domain,$uname);
6706: };
1.317 raeburn 6707: } else {
6708: $file=&localstudentphoto::fetch($domain,$uname);
6709: }
1.265 albertel 6710: if (!$file) {
6711: &Failure($client,"unavailable\n","$cmd:$tail");
6712: return 1;
6713: }
1.317 raeburn 6714: if (!-e $path.$filename) { &convert_photo($file,$path.$filename); }
6715: if (-e $path.$filename) {
1.265 albertel 6716: &Reply($client,"ok\n","$cmd:$tail");
6717: return 1;
6718: }
6719: &Failure($client,"unable_to_convert\n","$cmd:$tail");
6720: return 1;
6721: }
6722: ®ister_handler("studentphoto", \&student_photo_handler, 0, 1, 0);
1.246 foxr 6723:
1.361 raeburn 6724: sub inst_usertypes_handler {
6725: my ($cmd, $domain, $client) = @_;
6726: my $res;
6727: my $userinput = $cmd.":".$domain; # For logging purposes.
1.370 albertel 6728: my (%typeshash,@order,$result);
6729: eval {
6730: local($SIG{__DIE__})='DEFAULT';
6731: $result=&localenroll::inst_usertypes($domain,\%typeshash,\@order);
6732: };
6733: if ($result eq 'ok') {
1.361 raeburn 6734: if (keys(%typeshash) > 0) {
6735: foreach my $key (keys(%typeshash)) {
6736: $res.=&escape($key).'='.&escape($typeshash{$key}).'&';
6737: }
6738: }
6739: $res=~s/\&$//;
6740: $res .= ':';
6741: if (@order > 0) {
6742: foreach my $item (@order) {
6743: $res .= &escape($item).'&';
6744: }
6745: }
6746: $res=~s/\&$//;
6747: }
1.387 albertel 6748: &Reply($client, \$res, $userinput);
1.361 raeburn 6749: return 1;
6750: }
6751: ®ister_handler("inst_usertypes", \&inst_usertypes_handler, 0, 1, 0);
6752:
1.264 albertel 6753: # mkpath makes all directories for a file, expects an absolute path with a
6754: # file or a trailing / if just a dir is passed
6755: # returns 1 on success 0 on failure
6756: sub mkpath {
6757: my ($file)=@_;
6758: my @parts=split(/\//,$file,-1);
6759: my $now=$parts[0].'/'.$parts[1].'/'.$parts[2];
6760: for (my $i=3;$i<= ($#parts-1);$i++) {
1.265 albertel 6761: $now.='/'.$parts[$i];
1.264 albertel 6762: if (!-e $now) {
6763: if (!mkdir($now,0770)) { return 0; }
6764: }
6765: }
6766: return 1;
6767: }
6768:
1.207 foxr 6769: #---------------------------------------------------------------
6770: #
6771: # Getting, decoding and dispatching requests:
6772: #
6773: #
6774: # Get a Request:
6775: # Gets a Request message from the client. The transaction
6776: # is defined as a 'line' of text. We remove the new line
6777: # from the text line.
1.226 foxr 6778: #
1.211 albertel 6779: sub get_request {
1.207 foxr 6780: my $input = <$client>;
6781: chomp($input);
1.226 foxr 6782:
1.234 foxr 6783: &Debug("get_request: Request = $input\n");
1.207 foxr 6784:
6785: &status('Processing '.$clientname.':'.$input);
6786:
6787: return $input;
6788: }
1.212 foxr 6789: #---------------------------------------------------------------
6790: #
6791: # Process a request. This sub should shrink as each action
6792: # gets farmed out into a separat sub that is registered
6793: # with the dispatch hash.
6794: #
6795: # Parameters:
6796: # user_input - The request received from the client (lonc).
6797: # Returns:
6798: # true to keep processing, false if caller should exit.
6799: #
6800: sub process_request {
6801: my ($userinput) = @_; # Easier for now to break style than to
6802: # fix all the userinput -> user_input.
6803: my $wasenc = 0; # True if request was encrypted.
6804: # ------------------------------------------------------------ See if encrypted
1.322 albertel 6805: # for command
6806: # sethost:<server>
6807: # <command>:<args>
6808: # we just send it to the processor
6809: # for
6810: # sethost:<server>:<command>:<args>
6811: # we do the implict set host and then do the command
6812: if ($userinput =~ /^sethost:/) {
6813: (my $cmd,my $newid,$userinput) = split(':',$userinput,3);
6814: if (defined($userinput)) {
6815: &sethost("$cmd:$newid");
6816: } else {
6817: $userinput = "$cmd:$newid";
6818: }
6819: }
6820:
1.212 foxr 6821: if ($userinput =~ /^enc/) {
6822: $userinput = decipher($userinput);
6823: $wasenc=1;
6824: if(!$userinput) { # Cipher not defined.
1.251 foxr 6825: &Failure($client, "error: Encrypted data without negotated key\n");
1.212 foxr 6826: return 0;
6827: }
6828: }
6829: Debug("process_request: $userinput\n");
6830:
1.213 foxr 6831: #
6832: # The 'correct way' to add a command to lond is now to
6833: # write a sub to execute it and Add it to the command dispatch
6834: # hash via a call to register_handler.. The comments to that
6835: # sub should give you enough to go on to show how to do this
6836: # along with the examples that are building up as this code
6837: # is getting refactored. Until all branches of the
6838: # if/elseif monster below have been factored out into
6839: # separate procesor subs, if the dispatch hash is missing
6840: # the command keyword, we will fall through to the remainder
6841: # of the if/else chain below in order to keep this thing in
6842: # working order throughout the transmogrification.
6843:
6844: my ($command, $tail) = split(/:/, $userinput, 2);
6845: chomp($command);
6846: chomp($tail);
6847: $tail =~ s/(\r)//; # This helps people debugging with e.g. telnet.
1.214 foxr 6848: $command =~ s/(\r)//; # And this too for parameterless commands.
6849: if(!$tail) {
6850: $tail =""; # defined but blank.
6851: }
1.213 foxr 6852:
6853: &Debug("Command received: $command, encoded = $wasenc");
6854:
6855: if(defined $Dispatcher{$command}) {
6856:
6857: my $dispatch_info = $Dispatcher{$command};
6858: my $handler = $$dispatch_info[0];
6859: my $need_encode = $$dispatch_info[1];
6860: my $client_types = $$dispatch_info[2];
6861: Debug("Matched dispatch hash: mustencode: $need_encode "
6862: ."ClientType $client_types");
6863:
6864: # Validate the request:
6865:
6866: my $ok = 1;
6867: my $requesterprivs = 0;
6868: if(&isClient()) {
6869: $requesterprivs |= $CLIENT_OK;
6870: }
6871: if(&isManager()) {
6872: $requesterprivs |= $MANAGER_OK;
6873: }
6874: if($need_encode && (!$wasenc)) {
6875: Debug("Must encode but wasn't: $need_encode $wasenc");
6876: $ok = 0;
6877: }
6878: if(($client_types & $requesterprivs) == 0) {
6879: Debug("Client not privileged to do this operation");
6880: $ok = 0;
6881: }
6882:
6883: if($ok) {
6884: Debug("Dispatching to handler $command $tail");
6885: my $keep_going = &$handler($command, $tail, $client);
6886: return $keep_going;
6887: } else {
6888: Debug("Refusing to dispatch because client did not match requirements");
6889: Failure($client, "refused\n", $userinput);
6890: return 1;
6891: }
6892:
6893: }
6894:
1.262 foxr 6895: print $client "unknown_cmd\n";
1.212 foxr 6896: # -------------------------------------------------------------------- complete
6897: Debug("process_request - returning 1");
6898: return 1;
6899: }
1.207 foxr 6900: #
6901: # Decipher encoded traffic
6902: # Parameters:
6903: # input - Encoded data.
6904: # Returns:
6905: # Decoded data or undef if encryption key was not yet negotiated.
6906: # Implicit input:
6907: # cipher - This global holds the negotiated encryption key.
6908: #
1.211 albertel 6909: sub decipher {
1.207 foxr 6910: my ($input) = @_;
6911: my $output = '';
1.212 foxr 6912:
6913:
1.207 foxr 6914: if($cipher) {
6915: my($enc, $enclength, $encinput) = split(/:/, $input);
6916: for(my $encidx = 0; $encidx < length($encinput); $encidx += 16) {
6917: $output .=
6918: $cipher->decrypt(pack("H16", substr($encinput, $encidx, 16)));
6919: }
6920: return substr($output, 0, $enclength);
6921: } else {
6922: return undef;
6923: }
6924: }
6925:
6926: #
6927: # Register a command processor. This function is invoked to register a sub
6928: # to process a request. Once registered, the ProcessRequest sub can automatically
6929: # dispatch requests to an appropriate sub, and do the top level validity checking
6930: # as well:
6931: # - Is the keyword recognized.
6932: # - Is the proper client type attempting the request.
6933: # - Is the request encrypted if it has to be.
6934: # Parameters:
6935: # $request_name - Name of the request being registered.
6936: # This is the command request that will match
6937: # against the hash keywords to lookup the information
6938: # associated with the dispatch information.
6939: # $procedure - Reference to a sub to call to process the request.
6940: # All subs get called as follows:
6941: # Procedure($cmd, $tail, $replyfd, $key)
6942: # $cmd - the actual keyword that invoked us.
6943: # $tail - the tail of the request that invoked us.
6944: # $replyfd- File descriptor connected to the client
6945: # $must_encode - True if the request must be encoded to be good.
6946: # $client_ok - True if it's ok for a client to request this.
6947: # $manager_ok - True if it's ok for a manager to request this.
6948: # Side effects:
6949: # - On success, the Dispatcher hash has an entry added for the key $RequestName
6950: # - On failure, the program will die as it's a bad internal bug to try to
6951: # register a duplicate command handler.
6952: #
1.211 albertel 6953: sub register_handler {
1.212 foxr 6954: my ($request_name,$procedure,$must_encode, $client_ok,$manager_ok) = @_;
1.207 foxr 6955:
6956: # Don't allow duplication#
6957:
6958: if (defined $Dispatcher{$request_name}) {
6959: die "Attempting to define a duplicate request handler for $request_name\n";
6960: }
6961: # Build the client type mask:
6962:
6963: my $client_type_mask = 0;
6964: if($client_ok) {
6965: $client_type_mask |= $CLIENT_OK;
6966: }
6967: if($manager_ok) {
6968: $client_type_mask |= $MANAGER_OK;
6969: }
6970:
6971: # Enter the hash:
6972:
6973: my @entry = ($procedure, $must_encode, $client_type_mask);
6974:
6975: $Dispatcher{$request_name} = \@entry;
6976:
6977: }
6978:
6979:
6980: #------------------------------------------------------------------
6981:
6982:
6983:
6984:
1.141 foxr 6985: #
1.96 foxr 6986: # Convert an error return code from lcpasswd to a string value.
6987: #
6988: sub lcpasswdstrerror {
6989: my $ErrorCode = shift;
1.97 foxr 6990: if(($ErrorCode < 0) || ($ErrorCode > $lastpwderror)) {
1.96 foxr 6991: return "lcpasswd Unrecognized error return value ".$ErrorCode;
6992: } else {
1.98 foxr 6993: return $passwderrors[$ErrorCode];
1.96 foxr 6994: }
6995: }
6996:
1.23 harris41 6997: # grabs exception and records it to log before exiting
6998: sub catchexception {
1.27 albertel 6999: my ($error)=@_;
1.25 www 7000: $SIG{'QUIT'}='DEFAULT';
7001: $SIG{__DIE__}='DEFAULT';
1.165 albertel 7002: &status("Catching exception");
1.190 albertel 7003: &logthis("<font color='red'>CRITICAL: "
1.373 albertel 7004: ."ABNORMAL EXIT. Child $$ for server ".$perlvar{'lonHostID'}." died through "
1.27 albertel 7005: ."a crash with this error msg->[$error]</font>");
1.57 www 7006: &logthis('Famous last words: '.$status.' - '.$lastlog);
1.27 albertel 7007: if ($client) { print $client "error: $error\n"; }
1.59 www 7008: $server->close();
1.27 albertel 7009: die($error);
1.23 harris41 7010: }
1.63 www 7011: sub timeout {
1.165 albertel 7012: &status("Handling Timeout");
1.190 albertel 7013: &logthis("<font color='red'>CRITICAL: TIME OUT ".$$."</font>");
1.63 www 7014: &catchexception('Timeout');
7015: }
1.22 harris41 7016: # -------------------------------- Set signal handlers to record abnormal exits
7017:
1.226 foxr 7018:
1.22 harris41 7019: $SIG{'QUIT'}=\&catchexception;
7020: $SIG{__DIE__}=\&catchexception;
7021:
1.81 matthew 7022: # ---------------------------------- Read loncapa_apache.conf and loncapa.conf
1.95 harris41 7023: &status("Read loncapa.conf and loncapa_apache.conf");
7024: my $perlvarref=LONCAPA::Configuration::read_conf('loncapa.conf');
1.141 foxr 7025: %perlvar=%{$perlvarref};
1.80 harris41 7026: undef $perlvarref;
1.19 www 7027:
1.35 harris41 7028: # ----------------------------- Make sure this process is running from user=www
7029: my $wwwid=getpwnam('www');
7030: if ($wwwid!=$<) {
1.134 albertel 7031: my $emailto="$perlvar{'lonAdmEMail'},$perlvar{'lonSysEMail'}";
7032: my $subj="LON: $currenthostid User ID mismatch";
1.489.2.31 raeburn 7033: system("echo 'User ID mismatch. lond must be run as user www.' |".
7034: " mail -s '$subj' $emailto > /dev/null");
1.35 harris41 7035: exit 1;
7036: }
7037:
1.19 www 7038: # --------------------------------------------- Check if other instance running
7039:
7040: my $pidfile="$perlvar{'lonDaemons'}/logs/lond.pid";
7041:
7042: if (-e $pidfile) {
7043: my $lfh=IO::File->new("$pidfile");
7044: my $pide=<$lfh>;
7045: chomp($pide);
1.29 harris41 7046: if (kill 0 => $pide) { die "already running"; }
1.19 www 7047: }
1.1 albertel 7048:
7049: # ------------------------------------------------------------- Read hosts file
7050:
7051:
7052:
7053: # establish SERVER socket, bind and listen.
7054: $server = IO::Socket::INET->new(LocalPort => $perlvar{'londPort'},
7055: Type => SOCK_STREAM,
7056: Proto => 'tcp',
1.469 foxr 7057: ReuseAddr => 1,
1.1 albertel 7058: Listen => 10 )
1.29 harris41 7059: or die "making socket: $@\n";
1.1 albertel 7060:
7061: # --------------------------------------------------------- Do global variables
7062:
7063: # global variables
7064:
1.134 albertel 7065: my %children = (); # keys are current child process IDs
1.1 albertel 7066:
7067: sub REAPER { # takes care of dead children
7068: $SIG{CHLD} = \&REAPER;
1.165 albertel 7069: &status("Handling child death");
1.178 foxr 7070: my $pid;
7071: do {
7072: $pid = waitpid(-1,&WNOHANG());
7073: if (defined($children{$pid})) {
7074: &logthis("Child $pid died");
7075: delete($children{$pid});
1.183 albertel 7076: } elsif ($pid > 0) {
1.178 foxr 7077: &logthis("Unknown Child $pid died");
7078: }
7079: } while ( $pid > 0 );
7080: foreach my $child (keys(%children)) {
7081: $pid = waitpid($child,&WNOHANG());
7082: if ($pid > 0) {
7083: &logthis("Child $child - $pid looks like we missed it's death");
7084: delete($children{$pid});
7085: }
1.176 albertel 7086: }
1.165 albertel 7087: &status("Finished Handling child death");
1.1 albertel 7088: }
7089:
7090: sub HUNTSMAN { # signal handler for SIGINT
1.165 albertel 7091: &status("Killing children (INT)");
1.1 albertel 7092: local($SIG{CHLD}) = 'IGNORE'; # we're going to kill our children
7093: kill 'INT' => keys %children;
1.59 www 7094: &logthis("Free socket: ".shutdown($server,2)); # free up socket
1.1 albertel 7095: my $execdir=$perlvar{'lonDaemons'};
7096: unlink("$execdir/logs/lond.pid");
1.190 albertel 7097: &logthis("<font color='red'>CRITICAL: Shutting down</font>");
1.165 albertel 7098: &status("Done killing children");
1.1 albertel 7099: exit; # clean up with dignity
7100: }
7101:
7102: sub HUPSMAN { # signal handler for SIGHUP
7103: local($SIG{CHLD}) = 'IGNORE'; # we're going to kill our children
1.165 albertel 7104: &status("Killing children for restart (HUP)");
1.1 albertel 7105: kill 'INT' => keys %children;
1.59 www 7106: &logthis("Free socket: ".shutdown($server,2)); # free up socket
1.190 albertel 7107: &logthis("<font color='red'>CRITICAL: Restarting</font>");
1.134 albertel 7108: my $execdir=$perlvar{'lonDaemons'};
1.30 harris41 7109: unlink("$execdir/logs/lond.pid");
1.165 albertel 7110: &status("Restarting self (HUP)");
1.1 albertel 7111: exec("$execdir/lond"); # here we go again
7112: }
7113:
1.144 foxr 7114: #
1.148 foxr 7115: # Reload the Apache daemon's state.
1.150 foxr 7116: # This is done by invoking /home/httpd/perl/apachereload
7117: # a setuid perl script that can be root for us to do this job.
1.148 foxr 7118: #
7119: sub ReloadApache {
1.473 raeburn 7120: # --------------------------- Handle case of another apachereload process (locking)
1.474 raeburn 7121: if (&LONCAPA::try_to_lock('/tmp/lock_apachereload')) {
7122: my $execdir = $perlvar{'lonDaemons'};
7123: my $script = $execdir."/apachereload";
7124: system($script);
7125: unlink('/tmp/lock_apachereload'); # Remove the lock file.
7126: }
1.148 foxr 7127: }
7128:
7129: #
1.144 foxr 7130: # Called in response to a USR2 signal.
7131: # - Reread hosts.tab
7132: # - All children connected to hosts that were removed from hosts.tab
7133: # are killed via SIGINT
7134: # - All children connected to previously existing hosts are sent SIGUSR1
7135: # - Our internal hosts hash is updated to reflect the new contents of
7136: # hosts.tab causing connections from hosts added to hosts.tab to
7137: # now be honored.
7138: #
7139: sub UpdateHosts {
1.165 albertel 7140: &status("Reload hosts.tab");
1.147 foxr 7141: logthis('<font color="blue"> Updating connections </font>');
1.148 foxr 7142: #
7143: # The %children hash has the set of IP's we currently have children
7144: # on. These need to be matched against records in the hosts.tab
7145: # Any ip's no longer in the table get killed off they correspond to
7146: # either dropped or changed hosts. Note that the re-read of the table
7147: # will take care of new and changed hosts as connections come into being.
7148:
1.371 albertel 7149: &Apache::lonnet::reset_hosts_info();
1.148 foxr 7150:
1.368 albertel 7151: foreach my $child (keys(%children)) {
1.148 foxr 7152: my $childip = $children{$child};
1.374 albertel 7153: if ($childip ne '127.0.0.1'
7154: && !defined(&Apache::lonnet::get_hosts_from_ip($childip))) {
1.149 foxr 7155: logthis('<font color="blue"> UpdateHosts killing child '
7156: ." $child for ip $childip </font>");
1.148 foxr 7157: kill('INT', $child);
1.149 foxr 7158: } else {
7159: logthis('<font color="green"> keeping child for ip '
7160: ." $childip (pid=$child) </font>");
1.148 foxr 7161: }
7162: }
7163: ReloadApache;
1.165 albertel 7164: &status("Finished reloading hosts.tab");
1.144 foxr 7165: }
7166:
1.148 foxr 7167:
1.57 www 7168: sub checkchildren {
1.165 albertel 7169: &status("Checking on the children (sending signals)");
1.57 www 7170: &initnewstatus();
7171: &logstatus();
7172: &logthis('Going to check on the children');
1.134 albertel 7173: my $docdir=$perlvar{'lonDocRoot'};
1.61 harris41 7174: foreach (sort keys %children) {
1.221 albertel 7175: #sleep 1;
1.57 www 7176: unless (kill 'USR1' => $_) {
7177: &logthis ('Child '.$_.' is dead');
7178: &logstatus($$.' is dead');
1.221 albertel 7179: delete($children{$_});
1.57 www 7180: }
1.61 harris41 7181: }
1.63 www 7182: sleep 5;
1.212 foxr 7183: $SIG{ALRM} = sub { Debug("timeout");
7184: die "timeout"; };
1.113 albertel 7185: $SIG{__DIE__} = 'DEFAULT';
1.165 albertel 7186: &status("Checking on the children (waiting for reports)");
1.63 www 7187: foreach (sort keys %children) {
7188: unless (-e "$docdir/lon-status/londchld/$_.txt") {
1.113 albertel 7189: eval {
7190: alarm(300);
1.63 www 7191: &logthis('Child '.$_.' did not respond');
1.67 albertel 7192: kill 9 => $_;
1.131 albertel 7193: #$emailto="$perlvar{'lonAdmEMail'},$perlvar{'lonSysEMail'}";
7194: #$subj="LON: $currenthostid killed lond process $_";
7195: #my $result=`echo 'Killed lond process $_.' | mailto $emailto -s '$subj' > /dev/null`;
7196: #$execdir=$perlvar{'lonDaemons'};
7197: #$result=`/bin/cp $execdir/logs/lond.log $execdir/logs/lond.log.$_`;
1.221 albertel 7198: delete($children{$_});
1.113 albertel 7199: alarm(0);
7200: }
1.63 www 7201: }
7202: }
1.113 albertel 7203: $SIG{ALRM} = 'DEFAULT';
1.155 albertel 7204: $SIG{__DIE__} = \&catchexception;
1.165 albertel 7205: &status("Finished checking children");
1.221 albertel 7206: &logthis('Finished Checking children');
1.57 www 7207: }
7208:
1.1 albertel 7209: # --------------------------------------------------------------------- Logging
7210:
7211: sub logthis {
7212: my $message=shift;
7213: my $execdir=$perlvar{'lonDaemons'};
7214: my $fh=IO::File->new(">>$execdir/logs/lond.log");
7215: my $now=time;
7216: my $local=localtime($now);
1.58 www 7217: $lastlog=$local.': '.$message;
1.1 albertel 7218: print $fh "$local ($$): $message\n";
7219: }
7220:
1.77 foxr 7221: # ------------------------- Conditional log if $DEBUG true.
7222: sub Debug {
7223: my $message = shift;
7224: if($DEBUG) {
7225: &logthis($message);
7226: }
7227: }
1.161 foxr 7228:
7229: #
7230: # Sub to do replies to client.. this gives a hook for some
7231: # debug tracing too:
7232: # Parameters:
7233: # fd - File open on client.
7234: # reply - Text to send to client.
7235: # request - Original request from client.
7236: #
7237: sub Reply {
1.192 foxr 7238: my ($fd, $reply, $request) = @_;
1.387 albertel 7239: if (ref($reply)) {
7240: print $fd $$reply;
7241: print $fd "\n";
7242: if ($DEBUG) { Debug("Request was $request Reply was $$reply"); }
7243: } else {
7244: print $fd $reply;
7245: if ($DEBUG) { Debug("Request was $request Reply was $reply"); }
7246: }
1.212 foxr 7247: $Transactions++;
7248: }
7249:
7250:
7251: #
7252: # Sub to report a failure.
7253: # This function:
7254: # - Increments the failure statistic counters.
7255: # - Invokes Reply to send the error message to the client.
7256: # Parameters:
7257: # fd - File descriptor open on the client
7258: # reply - Reply text to emit.
7259: # request - The original request message (used by Reply
7260: # to debug if that's enabled.
7261: # Implicit outputs:
7262: # $Failures- The number of failures is incremented.
7263: # Reply (invoked here) sends a message to the
7264: # client:
7265: #
7266: sub Failure {
7267: my $fd = shift;
7268: my $reply = shift;
7269: my $request = shift;
7270:
7271: $Failures++;
7272: Reply($fd, $reply, $request); # That's simple eh?
1.161 foxr 7273: }
1.57 www 7274: # ------------------------------------------------------------------ Log status
7275:
7276: sub logstatus {
1.178 foxr 7277: &status("Doing logging");
7278: my $docdir=$perlvar{'lonDocRoot'};
7279: {
7280: my $fh=IO::File->new(">$docdir/lon-status/londchld/$$.txt");
1.200 matthew 7281: print $fh $status."\n".$lastlog."\n".time."\n$keymode";
1.178 foxr 7282: $fh->close();
7283: }
1.221 albertel 7284: &status("Finished $$.txt");
7285: {
7286: open(LOG,">>$docdir/lon-status/londstatus.txt");
7287: flock(LOG,LOCK_EX);
7288: print LOG $$."\t".$clientname."\t".$currenthostid."\t"
7289: .$status."\t".$lastlog."\t $keymode\n";
1.275 albertel 7290: flock(LOG,LOCK_UN);
1.221 albertel 7291: close(LOG);
7292: }
1.178 foxr 7293: &status("Finished logging");
1.57 www 7294: }
7295:
7296: sub initnewstatus {
7297: my $docdir=$perlvar{'lonDocRoot'};
7298: my $fh=IO::File->new(">$docdir/lon-status/londstatus.txt");
1.460 foxr 7299: my $now=time();
1.57 www 7300: my $local=localtime($now);
7301: print $fh "LOND status $local - parent $$\n\n";
1.64 www 7302: opendir(DIR,"$docdir/lon-status/londchld");
1.134 albertel 7303: while (my $filename=readdir(DIR)) {
1.64 www 7304: unlink("$docdir/lon-status/londchld/$filename");
7305: }
7306: closedir(DIR);
1.57 www 7307: }
7308:
7309: # -------------------------------------------------------------- Status setting
7310:
7311: sub status {
7312: my $what=shift;
7313: my $now=time;
7314: my $local=localtime($now);
1.178 foxr 7315: $status=$local.': '.$what;
7316: $0='lond: '.$what.' '.$local;
1.57 www 7317: }
1.11 www 7318:
1.13 www 7319: # -------------------------------------------------------------- Talk to lonsql
7320:
1.234 foxr 7321: sub sql_reply {
1.12 harris41 7322: my ($cmd)=@_;
1.234 foxr 7323: my $answer=&sub_sql_reply($cmd);
7324: if ($answer eq 'con_lost') { $answer=&sub_sql_reply($cmd); }
1.12 harris41 7325: return $answer;
7326: }
7327:
1.234 foxr 7328: sub sub_sql_reply {
1.12 harris41 7329: my ($cmd)=@_;
7330: my $unixsock="mysqlsock";
7331: my $peerfile="$perlvar{'lonSockDir'}/$unixsock";
7332: my $sclient=IO::Socket::UNIX->new(Peer =>"$peerfile",
7333: Type => SOCK_STREAM,
7334: Timeout => 10)
7335: or return "con_lost";
1.319 www 7336: print $sclient "$cmd:$currentdomainid\n";
1.12 harris41 7337: my $answer=<$sclient>;
7338: chomp($answer);
7339: if (!$answer) { $answer="con_lost"; }
7340: return $answer;
7341: }
7342:
1.1 albertel 7343: # --------------------------------------- Is this the home server of an author?
1.11 www 7344:
1.1 albertel 7345: sub ishome {
7346: my $author=shift;
7347: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
7348: my ($udom,$uname)=split(/\//,$author);
7349: my $proname=propath($udom,$uname);
7350: if (-e $proname) {
7351: return 'owner';
7352: } else {
7353: return 'not_owner';
7354: }
7355: }
7356:
7357: # ======================================================= Continue main program
7358: # ---------------------------------------------------- Fork once and dissociate
7359:
1.134 albertel 7360: my $fpid=fork;
1.1 albertel 7361: exit if $fpid;
1.29 harris41 7362: die "Couldn't fork: $!" unless defined ($fpid);
1.1 albertel 7363:
1.29 harris41 7364: POSIX::setsid() or die "Can't start new session: $!";
1.1 albertel 7365:
7366: # ------------------------------------------------------- Write our PID on disk
7367:
1.134 albertel 7368: my $execdir=$perlvar{'lonDaemons'};
1.1 albertel 7369: open (PIDSAVE,">$execdir/logs/lond.pid");
7370: print PIDSAVE "$$\n";
7371: close(PIDSAVE);
1.190 albertel 7372: &logthis("<font color='red'>CRITICAL: ---------- Starting ----------</font>");
1.57 www 7373: &status('Starting');
1.1 albertel 7374:
1.106 foxr 7375:
1.1 albertel 7376:
7377: # ----------------------------------------------------- Install signal handlers
7378:
1.57 www 7379:
1.1 albertel 7380: $SIG{CHLD} = \&REAPER;
7381: $SIG{INT} = $SIG{TERM} = \&HUNTSMAN;
7382: $SIG{HUP} = \&HUPSMAN;
1.57 www 7383: $SIG{USR1} = \&checkchildren;
1.144 foxr 7384: $SIG{USR2} = \&UpdateHosts;
1.106 foxr 7385:
1.148 foxr 7386: # Read the host hashes:
1.368 albertel 7387: &Apache::lonnet::load_hosts_tab();
1.447 raeburn 7388: my %iphost = &Apache::lonnet::get_iphost(1);
1.106 foxr 7389:
1.480 raeburn 7390: $dist=`$perlvar{'lonDaemons'}/distprobe`;
1.286 albertel 7391:
1.471 raeburn 7392: my $arch = `uname -i`;
1.475 raeburn 7393: chomp($arch);
1.471 raeburn 7394: if ($arch eq 'unknown') {
7395: $arch = `uname -m`;
1.475 raeburn 7396: chomp($arch);
1.471 raeburn 7397: }
7398:
1.106 foxr 7399: # --------------------------------------------------------------
7400: # Accept connections. When a connection comes in, it is validated
7401: # and if good, a child process is created to process transactions
7402: # along the connection.
7403:
1.1 albertel 7404: while (1) {
1.165 albertel 7405: &status('Starting accept');
1.106 foxr 7406: $client = $server->accept() or next;
1.165 albertel 7407: &status('Accepted '.$client.' off to spawn');
1.386 albertel 7408: make_new_child($client);
1.165 albertel 7409: &status('Finished spawning');
1.1 albertel 7410: }
7411:
1.212 foxr 7412: sub make_new_child {
7413: my $pid;
7414: # my $cipher; # Now global
7415: my $sigset;
1.178 foxr 7416:
1.212 foxr 7417: $client = shift;
7418: &status('Starting new child '.$client);
7419: &logthis('<font color="green"> Attempting to start child ('.$client.
7420: ")</font>");
7421: # block signal for fork
7422: $sigset = POSIX::SigSet->new(SIGINT);
7423: sigprocmask(SIG_BLOCK, $sigset)
7424: or die "Can't block SIGINT for fork: $!\n";
1.178 foxr 7425:
1.212 foxr 7426: die "fork: $!" unless defined ($pid = fork);
1.178 foxr 7427:
1.212 foxr 7428: $client->sockopt(SO_KEEPALIVE, 1); # Enable monitoring of
7429: # connection liveness.
1.178 foxr 7430:
1.212 foxr 7431: #
7432: # Figure out who we're talking to so we can record the peer in
7433: # the pid hash.
7434: #
7435: my $caller = getpeername($client);
7436: my ($port,$iaddr);
7437: if (defined($caller) && length($caller) > 0) {
7438: ($port,$iaddr)=unpack_sockaddr_in($caller);
7439: } else {
7440: &logthis("Unable to determine who caller was, getpeername returned nothing");
7441: }
7442: if (defined($iaddr)) {
7443: $clientip = inet_ntoa($iaddr);
7444: Debug("Connected with $clientip");
7445: } else {
7446: &logthis("Unable to determine clientip");
7447: $clientip='Unavailable';
7448: }
7449:
7450: if ($pid) {
7451: # Parent records the child's birth and returns.
7452: sigprocmask(SIG_UNBLOCK, $sigset)
7453: or die "Can't unblock SIGINT for fork: $!\n";
7454: $children{$pid} = $clientip;
7455: &status('Started child '.$pid);
1.462 foxr 7456: close($client);
1.212 foxr 7457: return;
7458: } else {
7459: # Child can *not* return from this subroutine.
7460: $SIG{INT} = 'DEFAULT'; # make SIGINT kill us as it did before
7461: $SIG{CHLD} = 'DEFAULT'; #make this default so that pwauth returns
7462: #don't get intercepted
7463: $SIG{USR1}= \&logstatus;
7464: $SIG{ALRM}= \&timeout;
1.468 foxr 7465: #
7466: # Block sigpipe as it gets thrownon socket disconnect and we want to
7467: # deal with that as a read faiure instead.
7468: #
7469: my $blockset = POSIX::SigSet->new(SIGPIPE);
7470: sigprocmask(SIG_BLOCK, $blockset);
7471:
1.212 foxr 7472: $lastlog='Forked ';
7473: $status='Forked';
1.178 foxr 7474:
1.212 foxr 7475: # unblock signals
7476: sigprocmask(SIG_UNBLOCK, $sigset)
7477: or die "Can't unblock SIGINT for fork: $!\n";
1.178 foxr 7478:
1.212 foxr 7479: # my $tmpsnum=0; # Now global
7480: #---------------------------------------------------- kerberos 5 initialization
7481: &Authen::Krb5::init_context();
1.489.2.16 raeburn 7482:
7483: my $no_ets;
1.489.2.43 raeburn 7484: if ($dist =~ /^(?:centos|rhes|scientific|oracle|rocky|alma)(\d+)/) {
1.489.2.16 raeburn 7485: if ($1 >= 7) {
7486: $no_ets = 1;
7487: }
7488: } elsif ($dist =~ /^suse(\d+\.\d+)$/) {
7489: if (($1 eq '9.3') || ($1 >= 12.2)) {
7490: $no_ets = 1;
7491: }
1.489.2.17 raeburn 7492: } elsif ($dist =~ /^sles(\d+)$/) {
7493: if ($1 > 11) {
7494: $no_ets = 1;
7495: }
1.489.2.16 raeburn 7496: } elsif ($dist =~ /^fedora(\d+)$/) {
7497: if ($1 < 7) {
7498: $no_ets = 1;
7499: }
7500: }
7501: unless ($no_ets) {
7502: &Authen::Krb5::init_ets();
7503: }
1.209 albertel 7504:
1.212 foxr 7505: &status('Accepted connection');
7506: # =============================================================================
7507: # do something with the connection
7508: # -----------------------------------------------------------------------------
7509: # see if we know client and 'check' for spoof IP by ineffective challenge
1.178 foxr 7510:
1.278 albertel 7511: my $outsideip=$clientip;
7512: if ($clientip eq '127.0.0.1') {
1.368 albertel 7513: $outsideip=&Apache::lonnet::get_host_ip($perlvar{'lonHostID'});
1.278 albertel 7514: }
1.412 foxr 7515: &ReadManagerTable();
1.368 albertel 7516: my $clientrec=defined(&Apache::lonnet::get_hosts_from_ip($outsideip));
1.278 albertel 7517: my $ismanager=($managers{$outsideip} ne undef);
1.432 raeburn 7518: $clientname = "[unknown]";
1.212 foxr 7519: if($clientrec) { # Establish client type.
7520: $ConnectionType = "client";
1.368 albertel 7521: $clientname = (&Apache::lonnet::get_hosts_from_ip($outsideip))[-1];
1.212 foxr 7522: if($ismanager) {
7523: $ConnectionType = "both";
7524: }
7525: } else {
7526: $ConnectionType = "manager";
1.278 albertel 7527: $clientname = $managers{$outsideip};
1.212 foxr 7528: }
7529: my $clientok;
1.178 foxr 7530:
1.212 foxr 7531: if ($clientrec || $ismanager) {
7532: &status("Waiting for init from $clientip $clientname");
7533: &logthis('<font color="yellow">INFO: Connection, '.
7534: $clientip.
7535: " ($clientname) connection type = $ConnectionType </font>" );
7536: &status("Connecting $clientip ($clientname))");
7537: my $remotereq=<$client>;
7538: chomp($remotereq);
7539: Debug("Got init: $remotereq");
1.337 albertel 7540:
1.212 foxr 7541: if ($remotereq =~ /^init/) {
7542: &sethost("sethost:$perlvar{'lonHostID'}");
7543: #
7544: # If the remote is attempting a local init... give that a try:
7545: #
1.432 raeburn 7546: (my $i, my $inittype, $clientversion) = split(/:/, $remotereq);
1.489.2.4 raeburn 7547: # For LON-CAPA 2.9, the client session will have sent its LON-CAPA
7548: # version when initiating the connection. For LON-CAPA 2.8 and older,
7549: # the version is retrieved from the global %loncaparevs in lonnet.pm.
7550: # $clientversion contains path to keyfile if $inittype eq 'local'
7551: # it's overridden below in this case
7552: $clientversion ||= $Apache::lonnet::loncaparevs{$clientname};
1.209 albertel 7553:
1.212 foxr 7554: # If the connection type is ssl, but I didn't get my
7555: # certificate files yet, then I'll drop back to
7556: # insecure (if allowed).
7557:
7558: if($inittype eq "ssl") {
7559: my ($ca, $cert) = lonssl::CertificateFile;
7560: my $kfile = lonssl::KeyFile;
7561: if((!$ca) ||
7562: (!$cert) ||
7563: (!$kfile)) {
7564: $inittype = ""; # This forces insecure attempt.
7565: &logthis("<font color=\"blue\"> Certificates not "
7566: ."installed -- trying insecure auth</font>");
1.224 foxr 7567: } else { # SSL certificates are in place so
1.212 foxr 7568: } # Leave the inittype alone.
7569: }
7570:
7571: if($inittype eq "local") {
1.432 raeburn 7572: $clientversion = $perlvar{'lonVersion'};
1.212 foxr 7573: my $key = LocalConnection($client, $remotereq);
7574: if($key) {
7575: Debug("Got local key $key");
7576: $clientok = 1;
7577: my $cipherkey = pack("H32", $key);
7578: $cipher = new IDEA($cipherkey);
7579: print $client "ok:local\n";
1.442 www 7580: &logthis('<font color="green">'
1.212 foxr 7581: . "Successful local authentication </font>");
7582: $keymode = "local"
1.178 foxr 7583: } else {
1.212 foxr 7584: Debug("Failed to get local key");
7585: $clientok = 0;
7586: shutdown($client, 3);
7587: close $client;
1.178 foxr 7588: }
1.212 foxr 7589: } elsif ($inittype eq "ssl") {
7590: my $key = SSLConnection($client);
7591: if ($key) {
7592: $clientok = 1;
7593: my $cipherkey = pack("H32", $key);
7594: $cipher = new IDEA($cipherkey);
7595: &logthis('<font color="green">'
7596: ."Successfull ssl authentication with $clientname </font>");
7597: $keymode = "ssl";
7598:
1.178 foxr 7599: } else {
1.212 foxr 7600: $clientok = 0;
7601: close $client;
1.178 foxr 7602: }
1.212 foxr 7603:
7604: } else {
7605: my $ok = InsecureConnection($client);
7606: if($ok) {
7607: $clientok = 1;
7608: &logthis('<font color="green">'
7609: ."Successful insecure authentication with $clientname </font>");
7610: print $client "ok\n";
7611: $keymode = "insecure";
1.178 foxr 7612: } else {
1.212 foxr 7613: &logthis('<font color="yellow">'
7614: ."Attempted insecure connection disallowed </font>");
7615: close $client;
7616: $clientok = 0;
1.178 foxr 7617: }
7618: }
1.212 foxr 7619: } else {
7620: &logthis(
7621: "<font color='blue'>WARNING: "
7622: ."$clientip failed to initialize: >$remotereq< </font>");
7623: &status('No init '.$clientip);
7624: }
7625: } else {
7626: &logthis(
7627: "<font color='blue'>WARNING: Unknown client $clientip</font>");
7628: &status('Hung up on '.$clientip);
7629: }
7630:
7631: if ($clientok) {
7632: # ---------------- New known client connecting, could mean machine online again
1.368 albertel 7633: if (&Apache::lonnet::get_host_ip($currenthostid) ne $clientip
1.367 albertel 7634: && $clientip ne '127.0.0.1') {
1.375 albertel 7635: &Apache::lonnet::reconlonc($clientname);
1.212 foxr 7636: }
7637: &logthis("<font color='green'>Established connection: $clientname</font>");
7638: &status('Will listen to '.$clientname);
7639: # ------------------------------------------------------------ Process requests
7640: my $keep_going = 1;
7641: my $user_input;
1.448 raeburn 7642: my $clienthost = &Apache::lonnet::hostname($clientname);
7643: my $clientserverhomeID = &Apache::lonnet::get_server_homeID($clienthost);
7644: $clienthomedom = &Apache::lonnet::host_domain($clientserverhomeID);
1.212 foxr 7645: while(($user_input = get_request) && $keep_going) {
7646: alarm(120);
7647: Debug("Main: Got $user_input\n");
7648: $keep_going = &process_request($user_input);
1.178 foxr 7649: alarm(0);
1.489.2.42 raeburn 7650: &status('Listening to '.$clientname." ($keymode)");
1.161 foxr 7651: }
1.212 foxr 7652:
1.59 www 7653: # --------------------------------------------- client unknown or fishy, refuse
1.212 foxr 7654: } else {
1.161 foxr 7655: print $client "refused\n";
7656: $client->close();
1.190 albertel 7657: &logthis("<font color='blue'>WARNING: "
1.161 foxr 7658: ."Rejected client $clientip, closing connection</font>");
7659: }
1.212 foxr 7660: }
1.161 foxr 7661:
1.1 albertel 7662: # =============================================================================
1.161 foxr 7663:
1.190 albertel 7664: &logthis("<font color='red'>CRITICAL: "
1.161 foxr 7665: ."Disconnect from $clientip ($clientname)</font>");
1.489.2.42 raeburn 7666:
7667:
1.161 foxr 7668: # this exit is VERY important, otherwise the child will become
7669: # a producer of more and more children, forking yourself into
7670: # process death.
7671: exit;
1.106 foxr 7672:
1.78 foxr 7673: }
1.261 foxr 7674: #
7675: # Determine if a user is an author for the indicated domain.
7676: #
7677: # Parameters:
7678: # domain - domain to check in .
7679: # user - Name of user to check.
7680: #
7681: # Return:
7682: # 1 - User is an author for domain.
7683: # 0 - User is not an author for domain.
7684: sub is_author {
7685: my ($domain, $user) = @_;
7686:
7687: &Debug("is_author: $user @ $domain");
7688:
7689: my $hashref = &tie_user_hash($domain, $user, "roles",
7690: &GDBM_READER());
7691:
7692: # Author role should show up as a key /domain/_au
1.78 foxr 7693:
1.321 albertel 7694: my $value;
1.487 foxr 7695: if ($hashref) {
1.78 foxr 7696:
1.487 foxr 7697: my $key = "/$domain/_au";
7698: if (defined($hashref)) {
7699: $value = $hashref->{$key};
7700: if(!untie_user_hash($hashref)) {
7701: return 'error: ' . ($!+0)." untie (GDBM) Failed";
7702: }
7703: }
7704:
7705: if(defined($value)) {
7706: &Debug("$user @ $domain is an author");
7707: }
7708: } else {
7709: return 'error: '.($!+0)." tie (GDBM) Failed";
1.261 foxr 7710: }
7711:
7712: return defined($value);
7713: }
1.78 foxr 7714: #
7715: # Checks to see if the input roleput request was to set
1.482 www 7716: # an author role. If so, creates construction space
1.78 foxr 7717: # Parameters:
7718: # request - The request sent to the rolesput subchunk.
7719: # We're looking for /domain/_au
7720: # domain - The domain in which the user is having roles doctored.
7721: # user - Name of the user for which the role is being put.
7722: # authtype - The authentication type associated with the user.
7723: #
1.289 albertel 7724: sub manage_permissions {
1.192 foxr 7725: my ($request, $domain, $user, $authtype) = @_;
1.78 foxr 7726: # See if the request is of the form /$domain/_au
1.289 albertel 7727: if($request =~ /^(\/\Q$domain\E\/_au)$/) { # It's an author rolesput...
1.484 raeburn 7728: my $path=$perlvar{'lonDocRoot'}."/priv/$domain";
1.482 www 7729: unless (-e $path) {
7730: mkdir($path);
7731: }
7732: unless (-e $path.'/'.$user) {
7733: mkdir($path.'/'.$user);
7734: }
1.78 foxr 7735: }
7736: }
1.222 foxr 7737:
7738:
7739: #
7740: # Return the full path of a user password file, whether it exists or not.
7741: # Parameters:
7742: # domain - Domain in which the password file lives.
7743: # user - name of the user.
7744: # Returns:
7745: # Full passwd path:
7746: #
7747: sub password_path {
7748: my ($domain, $user) = @_;
1.264 albertel 7749: return &propath($domain, $user).'/passwd';
1.222 foxr 7750: }
7751:
7752: # Password Filename
7753: # Returns the path to a passwd file given domain and user... only if
7754: # it exists.
7755: # Parameters:
7756: # domain - Domain in which to search.
7757: # user - username.
7758: # Returns:
7759: # - If the password file exists returns its path.
7760: # - If the password file does not exist, returns undefined.
7761: #
7762: sub password_filename {
7763: my ($domain, $user) = @_;
7764:
7765: Debug ("PasswordFilename called: dom = $domain user = $user");
7766:
7767: my $path = &password_path($domain, $user);
7768: Debug("PasswordFilename got path: $path");
7769: if(-e $path) {
7770: return $path;
7771: } else {
7772: return undef;
7773: }
7774: }
7775:
7776: #
7777: # Rewrite the contents of the user's passwd file.
7778: # Parameters:
7779: # domain - domain of the user.
7780: # name - User's name.
7781: # contents - New contents of the file.
1.489.2.26 raeburn 7782: # saveold - (optional). If true save old file in a passwd.bak file.
1.222 foxr 7783: # Returns:
7784: # 0 - Failed.
7785: # 1 - Success.
7786: #
7787: sub rewrite_password_file {
1.489.2.26 raeburn 7788: my ($domain, $user, $contents, $saveold) = @_;
1.222 foxr 7789:
7790: my $file = &password_filename($domain, $user);
7791: if (defined $file) {
1.489.2.26 raeburn 7792: if ($saveold) {
7793: my $bakfile = $file.'.bak';
7794: if (CopyFile($file,$bakfile)) {
7795: chmod(0400,$bakfile);
7796: &logthis("Old password saved in passwd.bak for internally authenticated user: $user:$domain");
7797: } else {
7798: &logthis("Failed to save old password in passwd.bak for internally authenticated user: $user:$domain");
7799: }
7800: }
1.222 foxr 7801: my $pf = IO::File->new(">$file");
7802: if($pf) {
7803: print $pf "$contents\n";
7804: return 1;
7805: } else {
7806: return 0;
7807: }
7808: } else {
7809: return 0;
7810: }
7811:
7812: }
7813:
1.78 foxr 7814: #
1.222 foxr 7815: # get_auth_type - Determines the authorization type of a user in a domain.
1.78 foxr 7816:
7817: # Returns the authorization type or nouser if there is no such user.
7818: #
1.436 raeburn 7819: sub get_auth_type {
1.192 foxr 7820: my ($domain, $user) = @_;
1.78 foxr 7821:
1.222 foxr 7822: Debug("get_auth_type( $domain, $user ) \n");
1.78 foxr 7823: my $proname = &propath($domain, $user);
7824: my $passwdfile = "$proname/passwd";
7825: if( -e $passwdfile ) {
7826: my $pf = IO::File->new($passwdfile);
7827: my $realpassword = <$pf>;
7828: chomp($realpassword);
1.79 foxr 7829: Debug("Password info = $realpassword\n");
1.78 foxr 7830: my ($authtype, $contentpwd) = split(/:/, $realpassword);
1.79 foxr 7831: Debug("Authtype = $authtype, content = $contentpwd\n");
1.259 raeburn 7832: return "$authtype:$contentpwd";
1.224 foxr 7833: } else {
1.79 foxr 7834: Debug("Returning nouser");
1.78 foxr 7835: return "nouser";
7836: }
1.1 albertel 7837: }
7838:
1.220 foxr 7839: #
7840: # Validate a user given their domain, name and password. This utility
7841: # function is used by both AuthenticateHandler and ChangePasswordHandler
7842: # to validate the login credentials of a user.
7843: # Parameters:
7844: # $domain - The domain being logged into (this is required due to
7845: # the capability for multihomed systems.
7846: # $user - The name of the user being validated.
7847: # $password - The user's propoposed password.
7848: #
7849: # Returns:
7850: # 1 - The domain,user,pasword triplet corresponds to a valid
7851: # user.
7852: # 0 - The domain,user,password triplet is not a valid user.
7853: #
7854: sub validate_user {
1.396 raeburn 7855: my ($domain, $user, $password, $checkdefauth) = @_;
1.220 foxr 7856:
7857: # Why negative ~pi you may well ask? Well this function is about
7858: # authentication, and therefore very important to get right.
7859: # I've initialized the flag that determines whether or not I've
7860: # validated correctly to a value it's not supposed to get.
7861: # At the end of this function. I'll ensure that it's not still that
7862: # value so we don't just wind up returning some accidental value
7863: # as a result of executing an unforseen code path that
1.249 foxr 7864: # did not set $validated. At the end of valid execution paths,
7865: # validated shoule be 1 for success or 0 for failuer.
1.220 foxr 7866:
7867: my $validated = -3.14159;
7868:
7869: # How we authenticate is determined by the type of authentication
7870: # the user has been assigned. If the authentication type is
7871: # "nouser", the user does not exist so we will return 0.
7872:
1.222 foxr 7873: my $contents = &get_auth_type($domain, $user);
1.220 foxr 7874: my ($howpwd, $contentpwd) = split(/:/, $contents);
7875:
7876: my $null = pack("C",0); # Used by kerberos auth types.
7877:
1.395 raeburn 7878: if ($howpwd eq 'nouser') {
1.396 raeburn 7879: if ($checkdefauth) {
7880: my %domdefaults = &Apache::lonnet::get_domain_defaults($domain);
7881: if ($domdefaults{'auth_def'} eq 'localauth') {
7882: $howpwd = $domdefaults{'auth_def'};
7883: $contentpwd = $domdefaults{'auth_arg_def'};
7884: } elsif ((($domdefaults{'auth_def'} eq 'krb4') ||
7885: ($domdefaults{'auth_def'} eq 'krb5')) &&
7886: ($domdefaults{'auth_arg_def'} ne '')) {
1.489.2.43.2. (raeburn 7887:): #
7888:): # Don't attempt authentication for username and password supplied
7889:): # for user without an account if username contains @ to avoid
7890:): # call to &Authen::Krb5::parse_name() which will result in con_lost
7891:): #
7892:): unless ($user =~ /\@/) {
7893:): $howpwd = $domdefaults{'auth_def'};
7894:): $contentpwd = $domdefaults{'auth_arg_def'};
7895:): }
1.396 raeburn 7896: }
1.395 raeburn 7897: }
1.489.2.26 raeburn 7898: }
1.220 foxr 7899: if ($howpwd ne 'nouser') {
7900: if($howpwd eq "internal") { # Encrypted is in local password file.
1.489.2.21 raeburn 7901: if (length($contentpwd) == 13) {
7902: $validated = (crypt($password,$contentpwd) eq $contentpwd);
7903: if ($validated) {
1.489.2.26 raeburn 7904: my %domdefaults = &Apache::lonnet::get_domain_defaults($domain);
7905: if ($domdefaults{'intauth_switch'}) {
7906: my $ncpass = &hash_passwd($domain,$password);
7907: my $saveold;
7908: if ($domdefaults{'intauth_switch'} == 2) {
7909: $saveold = 1;
7910: }
7911: if (&rewrite_password_file($domain,$user,"$howpwd:$ncpass",$saveold)) {
7912: &update_passwd_history($user,$domain,$howpwd,'conversion');
7913: &logthis("Validated password hashed with bcrypt for $user:$domain");
7914: }
1.489.2.21 raeburn 7915: }
7916: }
7917: } else {
1.489.2.26 raeburn 7918: $validated = &check_internal_passwd($password,$contentpwd,$domain,$user);
1.489.2.21 raeburn 7919: }
1.220 foxr 7920: }
7921: elsif ($howpwd eq "unix") { # User is a normal unix user.
7922: $contentpwd = (getpwnam($user))[1];
7923: if($contentpwd) {
7924: if($contentpwd eq 'x') { # Shadow password file...
7925: my $pwauth_path = "/usr/local/sbin/pwauth";
7926: open PWAUTH, "|$pwauth_path" or
7927: die "Cannot invoke authentication";
7928: print PWAUTH "$user\n$password\n";
7929: close PWAUTH;
7930: $validated = ! $?;
7931:
7932: } else { # Passwords in /etc/passwd.
7933: $validated = (crypt($password,
7934: $contentpwd) eq $contentpwd);
7935: }
7936: } else {
7937: $validated = 0;
7938: }
1.439 raeburn 7939: } elsif ($howpwd eq "krb4") { # user is in kerberos 4 auth. domain.
7940: my $checkwithkrb5 = 0;
7941: if ($dist =~/^fedora(\d+)$/) {
7942: if ($1 > 11) {
7943: $checkwithkrb5 = 1;
7944: }
7945: } elsif ($dist =~ /^suse([\d.]+)$/) {
7946: if ($1 > 11.1) {
7947: $checkwithkrb5 = 1;
7948: }
7949: }
7950: if ($checkwithkrb5) {
7951: $validated = &krb5_authen($password,$null,$user,$contentpwd);
7952: } else {
7953: $validated = &krb4_authen($password,$null,$user,$contentpwd);
7954: }
1.224 foxr 7955: } elsif ($howpwd eq "krb5") { # User is in kerberos 5 auth. domain.
1.439 raeburn 7956: $validated = &krb5_authen($password,$null,$user,$contentpwd);
1.224 foxr 7957: } elsif ($howpwd eq "localauth") {
1.220 foxr 7958: # Authenticate via installation specific authentcation method:
7959: $validated = &localauth::localauth($user,
7960: $password,
1.353 albertel 7961: $contentpwd,
7962: $domain);
1.358 albertel 7963: if ($validated < 0) {
1.357 albertel 7964: &logthis("localauth for $contentpwd $user:$domain returned a $validated");
7965: $validated = 0;
7966: }
1.224 foxr 7967: } else { # Unrecognized auth is also bad.
1.220 foxr 7968: $validated = 0;
7969: }
7970: } else {
7971: $validated = 0;
7972: }
7973: #
7974: # $validated has the correct stat of the authentication:
7975: #
7976:
7977: unless ($validated != -3.14159) {
1.249 foxr 7978: # I >really really< want to know if this happens.
7979: # since it indicates that user authentication is badly
7980: # broken in some code path.
7981: #
7982: die "ValidateUser - failed to set the value of validated $domain, $user $password";
1.220 foxr 7983: }
7984: return $validated;
7985: }
7986:
1.489.2.21 raeburn 7987: sub check_internal_passwd {
1.489.2.26 raeburn 7988: my ($plainpass,$stored,$domain,$user) = @_;
1.489.2.21 raeburn 7989: my (undef,$method,@rest) = split(/!/,$stored);
1.489.2.26 raeburn 7990: if ($method eq 'bcrypt') {
1.489.2.21 raeburn 7991: my $result = &hash_passwd($domain,$plainpass,@rest);
7992: if ($result ne $stored) {
7993: return 0;
7994: }
1.489.2.26 raeburn 7995: my %domdefaults = &Apache::lonnet::get_domain_defaults($domain);
7996: if ($domdefaults{'intauth_check'}) {
7997: # Upgrade to a larger number of rounds if necessary
7998: my $defaultcost = $domdefaults{'intauth_cost'};
7999: if (($defaultcost eq '') || ($defaultcost =~ /D/)) {
8000: $defaultcost = 10;
8001: }
8002: if (int($rest[0])<int($defaultcost)) {
8003: if ($domdefaults{'intauth_check'} == 1) {
8004: my $ncpass = &hash_passwd($domain,$plainpass);
8005: if (&rewrite_password_file($domain,$user,"internal:$ncpass")) {
8006: &update_passwd_history($user,$domain,'internal','update cost');
8007: &logthis("Validated password hashed with bcrypt for $user:$domain");
8008: }
8009: return 1;
8010: } elsif ($domdefaults{'intauth_check'} == 2) {
8011: return 0;
8012: }
8013: }
8014: } else {
8015: return 1;
1.489.2.21 raeburn 8016: }
8017: }
8018: return 0;
8019: }
8020:
8021: sub get_last_authchg {
8022: my ($domain,$user) = @_;
8023: my $lastmod;
8024: my $logname = &propath($domain,$user).'/passwd.log';
8025: if (-e "$logname") {
8026: $lastmod = (stat("$logname"))[9];
8027: }
8028: return $lastmod;
8029: }
8030:
1.439 raeburn 8031: sub krb4_authen {
8032: my ($password,$null,$user,$contentpwd) = @_;
8033: my $validated = 0;
8034: if (!($password =~ /$null/) ) { # Null password not allowed.
8035: eval {
8036: require Authen::Krb4;
8037: };
8038: if (!$@) {
8039: my $k4error = &Authen::Krb4::get_pw_in_tkt($user,
8040: "",
8041: $contentpwd,,
8042: 'krbtgt',
8043: $contentpwd,
8044: 1,
8045: $password);
8046: if(!$k4error) {
8047: $validated = 1;
8048: } else {
8049: $validated = 0;
8050: &logthis('krb4: '.$user.', '.$contentpwd.', '.
8051: &Authen::Krb4::get_err_txt($Authen::Krb4::error));
8052: }
8053: } else {
8054: $validated = krb5_authen($password,$null,$user,$contentpwd);
8055: }
8056: }
8057: return $validated;
8058: }
8059:
8060: sub krb5_authen {
8061: my ($password,$null,$user,$contentpwd) = @_;
8062: my $validated = 0;
8063: if(!($password =~ /$null/)) { # Null password not allowed.
8064: my $krbclient = &Authen::Krb5::parse_name($user.'@'
8065: .$contentpwd);
8066: my $krbservice = "krbtgt/".$contentpwd."\@".$contentpwd;
8067: my $krbserver = &Authen::Krb5::parse_name($krbservice);
8068: my $credentials= &Authen::Krb5::cc_default();
8069: $credentials->initialize(&Authen::Krb5::parse_name($user.'@'
8070: .$contentpwd));
8071: my $krbreturn;
8072: if (exists(&Authen::Krb5::get_init_creds_password)) {
8073: $krbreturn =
8074: &Authen::Krb5::get_init_creds_password($krbclient,$password,
8075: $krbservice);
8076: $validated = (ref($krbreturn) eq 'Authen::Krb5::Creds');
8077: } else {
8078: $krbreturn =
8079: &Authen::Krb5::get_in_tkt_with_password($krbclient,$krbserver,
8080: $password,$credentials);
8081: $validated = ($krbreturn == 1);
8082: }
8083: if (!$validated) {
8084: &logthis('krb5: '.$user.', '.$contentpwd.', '.
8085: &Authen::Krb5::error());
8086: }
8087: }
8088: return $validated;
8089: }
1.220 foxr 8090:
1.84 albertel 8091: sub addline {
8092: my ($fname,$hostid,$ip,$newline)=@_;
8093: my $contents;
8094: my $found=0;
1.355 albertel 8095: my $expr='^'.quotemeta($hostid).':'.quotemeta($ip).':';
1.134 albertel 8096: my $sh;
1.84 albertel 8097: if ($sh=IO::File->new("$fname.subscription")) {
8098: while (my $subline=<$sh>) {
8099: if ($subline !~ /$expr/) {$contents.= $subline;} else {$found=1;}
8100: }
8101: $sh->close();
8102: }
8103: $sh=IO::File->new(">$fname.subscription");
8104: if ($contents) { print $sh $contents; }
8105: if ($newline) { print $sh $newline; }
8106: $sh->close();
8107: return $found;
1.86 www 8108: }
8109:
1.234 foxr 8110: sub get_chat {
1.324 raeburn 8111: my ($cdom,$cname,$udom,$uname,$group)=@_;
1.310 albertel 8112:
1.87 www 8113: my @entries=();
1.324 raeburn 8114: my $namespace = 'nohist_chatroom';
8115: my $namespace_inroom = 'nohist_inchatroom';
1.335 albertel 8116: if ($group ne '') {
1.324 raeburn 8117: $namespace .= '_'.$group;
8118: $namespace_inroom .= '_'.$group;
8119: }
8120: my $hashref = &tie_user_hash($cdom, $cname, $namespace,
1.310 albertel 8121: &GDBM_READER());
8122: if ($hashref) {
8123: @entries=map { $_.':'.$hashref->{$_} } sort(keys(%$hashref));
1.311 albertel 8124: &untie_user_hash($hashref);
1.123 www 8125: }
1.124 www 8126: my @participants=();
1.134 albertel 8127: my $cutoff=time-60;
1.324 raeburn 8128: $hashref = &tie_user_hash($cdom, $cname, $namespace_inroom,
1.310 albertel 8129: &GDBM_WRCREAT());
8130: if ($hashref) {
8131: $hashref->{$uname.':'.$udom}=time;
8132: foreach my $user (sort(keys(%$hashref))) {
8133: if ($hashref->{$user}>$cutoff) {
8134: push(@participants, 'active_participant:'.$user);
1.123 www 8135: }
8136: }
1.311 albertel 8137: &untie_user_hash($hashref);
1.86 www 8138: }
1.124 www 8139: return (@participants,@entries);
1.86 www 8140: }
8141:
1.234 foxr 8142: sub chat_add {
1.324 raeburn 8143: my ($cdom,$cname,$newchat,$group)=@_;
1.88 albertel 8144: my @entries=();
1.142 www 8145: my $time=time;
1.324 raeburn 8146: my $namespace = 'nohist_chatroom';
8147: my $logfile = 'chatroom.log';
1.335 albertel 8148: if ($group ne '') {
1.324 raeburn 8149: $namespace .= '_'.$group;
8150: $logfile = 'chatroom_'.$group.'.log';
8151: }
8152: my $hashref = &tie_user_hash($cdom, $cname, $namespace,
1.310 albertel 8153: &GDBM_WRCREAT());
8154: if ($hashref) {
8155: @entries=map { $_.':'.$hashref->{$_} } sort(keys(%$hashref));
1.88 albertel 8156: my ($lastid)=($entries[$#entries]=~/^(\w+)\:/);
8157: my ($thentime,$idnum)=split(/\_/,$lastid);
8158: my $newid=$time.'_000000';
8159: if ($thentime==$time) {
8160: $idnum=~s/^0+//;
8161: $idnum++;
8162: $idnum=substr('000000'.$idnum,-6,6);
8163: $newid=$time.'_'.$idnum;
8164: }
1.310 albertel 8165: $hashref->{$newid}=$newchat;
1.88 albertel 8166: my $expired=$time-3600;
1.310 albertel 8167: foreach my $comment (keys(%$hashref)) {
8168: my ($thistime) = ($comment=~/(\d+)\_/);
1.88 albertel 8169: if ($thistime<$expired) {
1.310 albertel 8170: delete $hashref->{$comment};
1.88 albertel 8171: }
8172: }
1.310 albertel 8173: {
8174: my $proname=&propath($cdom,$cname);
1.324 raeburn 8175: if (open(CHATLOG,">>$proname/$logfile")) {
1.310 albertel 8176: print CHATLOG ("$time:".&unescape($newchat)."\n");
8177: }
8178: close(CHATLOG);
1.142 www 8179: }
1.311 albertel 8180: &untie_user_hash($hashref);
1.86 www 8181: }
1.84 albertel 8182: }
8183:
8184: sub unsub {
8185: my ($fname,$clientip)=@_;
8186: my $result;
1.188 foxr 8187: my $unsubs = 0; # Number of successful unsubscribes:
8188:
8189:
8190: # An old way subscriptions were handled was to have a
8191: # subscription marker file:
8192:
8193: Debug("Attempting unlink of $fname.$clientname");
1.161 foxr 8194: if (unlink("$fname.$clientname")) {
1.188 foxr 8195: $unsubs++; # Successful unsub via marker file.
8196: }
8197:
8198: # The more modern way to do it is to have a subscription list
8199: # file:
8200:
1.84 albertel 8201: if (-e "$fname.subscription") {
1.161 foxr 8202: my $found=&addline($fname,$clientname,$clientip,'');
1.188 foxr 8203: if ($found) {
8204: $unsubs++;
8205: }
8206: }
8207:
8208: # If either or both of these mechanisms succeeded in unsubscribing a
8209: # resource we can return ok:
8210:
8211: if($unsubs) {
8212: $result = "ok\n";
1.84 albertel 8213: } else {
1.188 foxr 8214: $result = "not_subscribed\n";
1.84 albertel 8215: }
1.188 foxr 8216:
1.84 albertel 8217: return $result;
8218: }
8219:
1.101 www 8220: sub currentversion {
8221: my $fname=shift;
8222: my $version=-1;
8223: my $ulsdir='';
8224: if ($fname=~/^(.+)\/[^\/]+$/) {
8225: $ulsdir=$1;
8226: }
1.114 albertel 8227: my ($fnamere1,$fnamere2);
8228: # remove version if already specified
1.101 www 8229: $fname=~s/\.\d+\.(\w+(?:\.meta)*)$/\.$1/;
1.114 albertel 8230: # get the bits that go before and after the version number
8231: if ( $fname=~/^(.*\.)(\w+(?:\.meta)*)$/ ) {
8232: $fnamere1=$1;
8233: $fnamere2='.'.$2;
8234: }
1.101 www 8235: if (-e $fname) { $version=1; }
8236: if (-e $ulsdir) {
1.134 albertel 8237: if(-d $ulsdir) {
8238: if (opendir(LSDIR,$ulsdir)) {
8239: my $ulsfn;
8240: while ($ulsfn=readdir(LSDIR)) {
1.101 www 8241: # see if this is a regular file (ignore links produced earlier)
1.134 albertel 8242: my $thisfile=$ulsdir.'/'.$ulsfn;
8243: unless (-l $thisfile) {
1.160 www 8244: if ($thisfile=~/\Q$fnamere1\E(\d+)\Q$fnamere2\E$/) {
1.134 albertel 8245: if ($1>$version) { $version=$1; }
8246: }
8247: }
8248: }
8249: closedir(LSDIR);
8250: $version++;
8251: }
8252: }
8253: }
8254: return $version;
1.101 www 8255: }
8256:
8257: sub thisversion {
8258: my $fname=shift;
8259: my $version=-1;
8260: if ($fname=~/\.(\d+)\.\w+(?:\.meta)*$/) {
8261: $version=$1;
8262: }
8263: return $version;
8264: }
8265:
1.84 albertel 8266: sub subscribe {
8267: my ($userinput,$clientip)=@_;
8268: my $result;
1.293 albertel 8269: my ($cmd,$fname)=split(/:/,$userinput,2);
1.84 albertel 8270: my $ownership=&ishome($fname);
8271: if ($ownership eq 'owner') {
1.101 www 8272: # explitly asking for the current version?
8273: unless (-e $fname) {
8274: my $currentversion=¤tversion($fname);
8275: if (&thisversion($fname)==$currentversion) {
8276: if ($fname=~/^(.+)\.\d+\.(\w+(?:\.meta)*)$/) {
8277: my $root=$1;
8278: my $extension=$2;
8279: symlink($root.'.'.$extension,
8280: $root.'.'.$currentversion.'.'.$extension);
1.102 www 8281: unless ($extension=~/\.meta$/) {
8282: symlink($root.'.'.$extension.'.meta',
8283: $root.'.'.$currentversion.'.'.$extension.'.meta');
8284: }
1.101 www 8285: }
8286: }
8287: }
1.84 albertel 8288: if (-e $fname) {
8289: if (-d $fname) {
8290: $result="directory\n";
8291: } else {
1.161 foxr 8292: if (-e "$fname.$clientname") {&unsub($fname,$clientip);}
1.134 albertel 8293: my $now=time;
1.161 foxr 8294: my $found=&addline($fname,$clientname,$clientip,
8295: "$clientname:$clientip:$now\n");
1.84 albertel 8296: if ($found) { $result="$fname\n"; }
8297: # if they were subscribed to only meta data, delete that
8298: # subscription, when you subscribe to a file you also get
8299: # the metadata
8300: unless ($fname=~/\.meta$/) { &unsub("$fname.meta",$clientip); }
8301: $fname=~s/\/home\/httpd\/html\/res/raw/;
1.476 raeburn 8302: my $protocol = $Apache::lonnet::protocol{$perlvar{'lonHostID'}};
8303: $protocol = 'http' if ($protocol ne 'https');
8304: $fname=$protocol.'://'.&Apache::lonnet::hostname($perlvar{'lonHostID'})."/".$fname;
1.84 albertel 8305: $result="$fname\n";
8306: }
8307: } else {
8308: $result="not_found\n";
8309: }
8310: } else {
8311: $result="rejected\n";
8312: }
8313: return $result;
8314: }
1.287 foxr 8315: # Change the passwd of a unix user. The caller must have
8316: # first verified that the user is a loncapa user.
8317: #
8318: # Parameters:
8319: # user - Unix user name to change.
8320: # pass - New password for the user.
8321: # Returns:
8322: # ok - if success
8323: # other - Some meaningfule error message string.
8324: # NOTE:
8325: # invokes a setuid script to change the passwd.
8326: sub change_unix_password {
8327: my ($user, $pass) = @_;
8328:
8329: &Debug("change_unix_password");
8330: my $execdir=$perlvar{'lonDaemons'};
8331: &Debug("Opening lcpasswd pipeline");
8332: my $pf = IO::File->new("|$execdir/lcpasswd > "
8333: ."$perlvar{'lonDaemons'}"
8334: ."/logs/lcpasswd.log");
8335: print $pf "$user\n$pass\n$pass\n";
8336: close $pf;
8337: my $err = $?;
8338: return ($err < @passwderrors) ? $passwderrors[$err] :
8339: "pwchange_falure - unknown error";
8340:
8341:
8342: }
8343:
1.91 albertel 8344:
8345: sub make_passwd_file {
1.489.2.21 raeburn 8346: my ($uname,$udom,$umode,$npass,$passfilename,$action)=@_;
1.390 raeburn 8347: my $result="ok";
1.91 albertel 8348: if ($umode eq 'krb4' or $umode eq 'krb5') {
8349: {
8350: my $pf = IO::File->new(">$passfilename");
1.261 foxr 8351: if ($pf) {
8352: print $pf "$umode:$npass\n";
1.489.2.21 raeburn 8353: &update_passwd_history($uname,$udom,$umode,$action);
1.261 foxr 8354: } else {
8355: $result = "pass_file_failed_error";
8356: }
1.91 albertel 8357: }
8358: } elsif ($umode eq 'internal') {
1.489.2.21 raeburn 8359: my $ncpass = &hash_passwd($udom,$npass);
1.91 albertel 8360: {
8361: &Debug("Creating internal auth");
8362: my $pf = IO::File->new(">$passfilename");
1.261 foxr 8363: if($pf) {
8364: print $pf "internal:$ncpass\n";
1.489.2.21 raeburn 8365: &update_passwd_history($uname,$udom,$umode,$action);
1.261 foxr 8366: } else {
8367: $result = "pass_file_failed_error";
8368: }
1.91 albertel 8369: }
8370: } elsif ($umode eq 'localauth') {
8371: {
8372: my $pf = IO::File->new(">$passfilename");
1.261 foxr 8373: if($pf) {
8374: print $pf "localauth:$npass\n";
1.489.2.21 raeburn 8375: &update_passwd_history($uname,$udom,$umode,$action);
1.261 foxr 8376: } else {
8377: $result = "pass_file_failed_error";
8378: }
1.91 albertel 8379: }
8380: } elsif ($umode eq 'unix') {
1.489.2.8 raeburn 8381: &logthis(">>>Attempt to create unix account blocked -- unix auth not available for new users.");
8382: $result="no_new_unix_accounts";
1.91 albertel 8383: } elsif ($umode eq 'none') {
8384: {
1.223 foxr 8385: my $pf = IO::File->new("> $passfilename");
1.261 foxr 8386: if($pf) {
8387: print $pf "none:\n";
8388: } else {
8389: $result = "pass_file_failed_error";
8390: }
1.91 albertel 8391: }
8392: } else {
1.390 raeburn 8393: $result="auth_mode_error";
1.91 albertel 8394: }
8395: return $result;
1.121 albertel 8396: }
8397:
1.265 albertel 8398: sub convert_photo {
8399: my ($start,$dest)=@_;
8400: system("convert $start $dest");
8401: }
8402:
1.121 albertel 8403: sub sethost {
8404: my ($remotereq) = @_;
8405: my (undef,$hostid)=split(/:/,$remotereq);
1.322 albertel 8406: # ignore sethost if we are already correct
8407: if ($hostid eq $currenthostid) {
8408: return 'ok';
8409: }
8410:
1.121 albertel 8411: if (!defined($hostid)) { $hostid=$perlvar{'lonHostID'}; }
1.368 albertel 8412: if (&Apache::lonnet::get_host_ip($perlvar{'lonHostID'})
8413: eq &Apache::lonnet::get_host_ip($hostid)) {
1.200 matthew 8414: $currenthostid =$hostid;
1.369 albertel 8415: $currentdomainid=&Apache::lonnet::host_domain($hostid);
1.443 www 8416: # &logthis("Setting hostid to $hostid, and domain to $currentdomainid");
1.121 albertel 8417: } else {
8418: &logthis("Requested host id $hostid not an alias of ".
8419: $perlvar{'lonHostID'}." refusing connection");
8420: return 'unable_to_set';
8421: }
8422: return 'ok';
8423: }
8424:
8425: sub version {
8426: my ($userinput)=@_;
8427: $remoteVERSION=(split(/:/,$userinput))[1];
8428: return "version:$VERSION";
1.127 albertel 8429: }
1.178 foxr 8430:
1.447 raeburn 8431: sub get_usersession_config {
8432: my ($dom,$name) = @_;
8433: my ($usersessionconf,$cached)=&Apache::lonnet::is_cached_new($name,$dom);
8434: if (defined($cached)) {
8435: return $usersessionconf;
8436: } else {
8437: my %domconfig = &Apache::lonnet::get_dom('configuration',['usersessions'],$dom);
8438: if (ref($domconfig{'usersessions'}) eq 'HASH') {
8439: &Apache::lonnet::do_cache_new($name,$dom,$domconfig{'usersessions'},3600);
8440: return $domconfig{'usersessions'};
8441: }
8442: }
8443: return;
8444: }
1.200 matthew 8445:
1.489.2.27 raeburn 8446: sub get_usersearch_config {
8447: my ($dom,$name) = @_;
8448: my ($usersearchconf,$cached)=&Apache::lonnet::is_cached_new($name,$dom);
8449: if (defined($cached)) {
8450: return $usersearchconf;
8451: } else {
8452: my %domconfig = &Apache::lonnet::get_dom('configuration',['directorysrch'],$dom);
8453: &Apache::lonnet::do_cache_new($name,$dom,$domconfig{'directorysrch'},3600);
8454: return $domconfig{'directorysrch'};
8455: }
8456: return;
8457: }
1.450 raeburn 8458:
1.471 raeburn 8459: sub distro_and_arch {
8460: return $dist.':'.$arch;
8461: }
8462:
1.61 harris41 8463: # ----------------------------------- POD (plain old documentation, CPAN style)
8464:
8465: =head1 NAME
8466:
8467: lond - "LON Daemon" Server (port "LOND" 5663)
8468:
8469: =head1 SYNOPSIS
8470:
1.74 harris41 8471: Usage: B<lond>
8472:
8473: Should only be run as user=www. This is a command-line script which
8474: is invoked by B<loncron>. There is no expectation that a typical user
8475: will manually start B<lond> from the command-line. (In other words,
8476: DO NOT START B<lond> YOURSELF.)
1.61 harris41 8477:
8478: =head1 DESCRIPTION
8479:
1.74 harris41 8480: There are two characteristics associated with the running of B<lond>,
8481: PROCESS MANAGEMENT (starting, stopping, handling child processes)
8482: and SERVER-SIDE ACTIVITIES (password authentication, user creation,
8483: subscriptions, etc). These are described in two large
8484: sections below.
8485:
8486: B<PROCESS MANAGEMENT>
8487:
1.61 harris41 8488: Preforker - server who forks first. Runs as a daemon. HUPs.
8489: Uses IDEA encryption
8490:
1.74 harris41 8491: B<lond> forks off children processes that correspond to the other servers
8492: in the network. Management of these processes can be done at the
8493: parent process level or the child process level.
8494:
8495: B<logs/lond.log> is the location of log messages.
8496:
8497: The process management is now explained in terms of linux shell commands,
8498: subroutines internal to this code, and signal assignments:
8499:
8500: =over 4
8501:
8502: =item *
8503:
8504: PID is stored in B<logs/lond.pid>
8505:
8506: This is the process id number of the parent B<lond> process.
8507:
8508: =item *
8509:
8510: SIGTERM and SIGINT
8511:
8512: Parent signal assignment:
8513: $SIG{INT} = $SIG{TERM} = \&HUNTSMAN;
8514:
8515: Child signal assignment:
8516: $SIG{INT} = 'DEFAULT'; (and SIGTERM is DEFAULT also)
8517: (The child dies and a SIGALRM is sent to parent, awaking parent from slumber
8518: to restart a new child.)
8519:
8520: Command-line invocations:
8521: B<kill> B<-s> SIGTERM I<PID>
8522: B<kill> B<-s> SIGINT I<PID>
8523:
8524: Subroutine B<HUNTSMAN>:
8525: This is only invoked for the B<lond> parent I<PID>.
8526: This kills all the children, and then the parent.
8527: The B<lonc.pid> file is cleared.
8528:
8529: =item *
8530:
8531: SIGHUP
8532:
8533: Current bug:
8534: This signal can only be processed the first time
8535: on the parent process. Subsequent SIGHUP signals
8536: have no effect.
8537:
8538: Parent signal assignment:
8539: $SIG{HUP} = \&HUPSMAN;
8540:
8541: Child signal assignment:
8542: none (nothing happens)
8543:
8544: Command-line invocations:
8545: B<kill> B<-s> SIGHUP I<PID>
8546:
8547: Subroutine B<HUPSMAN>:
8548: This is only invoked for the B<lond> parent I<PID>,
8549: This kills all the children, and then the parent.
8550: The B<lond.pid> file is cleared.
8551:
8552: =item *
8553:
8554: SIGUSR1
8555:
8556: Parent signal assignment:
8557: $SIG{USR1} = \&USRMAN;
8558:
8559: Child signal assignment:
8560: $SIG{USR1}= \&logstatus;
8561:
8562: Command-line invocations:
8563: B<kill> B<-s> SIGUSR1 I<PID>
8564:
8565: Subroutine B<USRMAN>:
8566: When invoked for the B<lond> parent I<PID>,
8567: SIGUSR1 is sent to all the children, and the status of
8568: each connection is logged.
1.144 foxr 8569:
8570: =item *
8571:
8572: SIGUSR2
8573:
8574: Parent Signal assignment:
8575: $SIG{USR2} = \&UpdateHosts
8576:
8577: Child signal assignment:
8578: NONE
8579:
1.74 harris41 8580:
8581: =item *
8582:
8583: SIGCHLD
8584:
8585: Parent signal assignment:
8586: $SIG{CHLD} = \&REAPER;
8587:
8588: Child signal assignment:
8589: none
8590:
8591: Command-line invocations:
8592: B<kill> B<-s> SIGCHLD I<PID>
8593:
8594: Subroutine B<REAPER>:
8595: This is only invoked for the B<lond> parent I<PID>.
8596: Information pertaining to the child is removed.
8597: The socket port is cleaned up.
8598:
8599: =back
8600:
8601: B<SERVER-SIDE ACTIVITIES>
8602:
8603: Server-side information can be accepted in an encrypted or non-encrypted
8604: method.
8605:
8606: =over 4
8607:
8608: =item ping
8609:
8610: Query a client in the hosts.tab table; "Are you there?"
8611:
8612: =item pong
8613:
8614: Respond to a ping query.
8615:
8616: =item ekey
8617:
8618: Read in encrypted key, make cipher. Respond with a buildkey.
8619:
8620: =item load
8621:
8622: Respond with CPU load based on a computation upon /proc/loadavg.
8623:
8624: =item currentauth
8625:
8626: Reply with current authentication information (only over an
8627: encrypted channel).
8628:
8629: =item auth
8630:
8631: Only over an encrypted channel, reply as to whether a user's
8632: authentication information can be validated.
8633:
8634: =item passwd
8635:
8636: Allow for a password to be set.
8637:
8638: =item makeuser
8639:
8640: Make a user.
8641:
8642: =item passwd
8643:
8644: Allow for authentication mechanism and password to be changed.
8645:
8646: =item home
1.61 harris41 8647:
1.74 harris41 8648: Respond to a question "are you the home for a given user?"
8649:
8650: =item update
8651:
8652: Update contents of a subscribed resource.
8653:
8654: =item unsubscribe
8655:
8656: The server is unsubscribing from a resource.
8657:
8658: =item subscribe
8659:
8660: The server is subscribing to a resource.
8661:
8662: =item log
8663:
8664: Place in B<logs/lond.log>
8665:
8666: =item put
8667:
8668: stores hash in namespace
8669:
1.489.2.2 raeburn 8670: =item rolesput
1.74 harris41 8671:
8672: put a role into a user's environment
8673:
8674: =item get
8675:
8676: returns hash with keys from array
8677: reference filled in from namespace
8678:
8679: =item eget
8680:
8681: returns hash with keys from array
8682: reference filled in from namesp (encrypts the return communication)
8683:
8684: =item rolesget
8685:
8686: get a role from a user's environment
8687:
8688: =item del
8689:
8690: deletes keys out of array from namespace
8691:
8692: =item keys
8693:
8694: returns namespace keys
8695:
8696: =item dump
8697:
8698: dumps the complete (or key matching regexp) namespace into a hash
8699:
8700: =item store
8701:
8702: stores hash permanently
8703: for this url; hashref needs to be given and should be a \%hashname; the
8704: remaining args aren't required and if they aren't passed or are '' they will
8705: be derived from the ENV
8706:
8707: =item restore
8708:
8709: returns a hash for a given url
8710:
8711: =item querysend
8712:
8713: Tells client about the lonsql process that has been launched in response
8714: to a sent query.
8715:
8716: =item queryreply
8717:
8718: Accept information from lonsql and make appropriate storage in temporary
8719: file space.
8720:
8721: =item idput
8722:
8723: Defines usernames as corresponding to IDs. (These "IDs" are unique identifiers
8724: for each student, defined perhaps by the institutional Registrar.)
8725:
8726: =item idget
8727:
8728: Returns usernames corresponding to IDs. (These "IDs" are unique identifiers
8729: for each student, defined perhaps by the institutional Registrar.)
8730:
8731: =item tmpput
8732:
8733: Accept and store information in temporary space.
8734:
8735: =item tmpget
8736:
8737: Send along temporarily stored information.
8738:
8739: =item ls
8740:
8741: List part of a user's directory.
8742:
1.135 foxr 8743: =item pushtable
8744:
8745: Pushes a file in /home/httpd/lonTab directory. Currently limited to:
8746: hosts.tab and domain.tab. The old file is copied to *.tab.backup but
8747: must be restored manually in case of a problem with the new table file.
8748: pushtable requires that the request be encrypted and validated via
8749: ValidateManager. The form of the command is:
8750: enc:pushtable tablename <tablecontents> \n
8751: where pushtable, tablename and <tablecontents> will be encrypted, but \n is a
8752: cleartext newline.
8753:
1.74 harris41 8754: =item Hanging up (exit or init)
8755:
8756: What to do when a client tells the server that they (the client)
8757: are leaving the network.
8758:
8759: =item unknown command
8760:
8761: If B<lond> is sent an unknown command (not in the list above),
8762: it replys to the client "unknown_cmd".
1.135 foxr 8763:
1.74 harris41 8764:
8765: =item UNKNOWN CLIENT
8766:
8767: If the anti-spoofing algorithm cannot verify the client,
8768: the client is rejected (with a "refused" message sent
8769: to the client, and the connection is closed.
8770:
8771: =back
1.61 harris41 8772:
8773: =head1 PREREQUISITES
8774:
8775: IO::Socket
8776: IO::File
8777: Apache::File
8778: POSIX
8779: Crypt::IDEA
8780: LWP::UserAgent()
8781: GDBM_File
8782: Authen::Krb4
1.91 albertel 8783: Authen::Krb5
1.61 harris41 8784:
8785: =head1 COREQUISITES
8786:
8787: =head1 OSNAMES
8788:
8789: linux
8790:
8791: =head1 SCRIPT CATEGORIES
8792:
8793: Server/Process
8794:
8795: =cut
1.409 foxr 8796:
8797:
8798: =pod
8799:
8800: =head1 LOG MESSAGES
8801:
8802: The messages below can be emitted in the lond log. This log is located
8803: in ~httpd/perl/logs/lond.log Many log messages have HTML encapsulation
8804: to provide coloring if examined from inside a web page. Some do not.
8805: Where color is used, the colors are; Red for sometihhng to get excited
8806: about and to follow up on. Yellow for something to keep an eye on to
8807: be sure it does not get worse, Green,and Blue for informational items.
8808:
8809: In the discussions below, sometimes reference is made to ~httpd
8810: when describing file locations. There isn't really an httpd
8811: user, however there is an httpd directory that gets installed in the
8812: place that user home directories go. On linux, this is usually
8813: (always?) /home/httpd.
8814:
8815:
8816: Some messages are colorless. These are usually (not always)
8817: Green/Blue color level messages.
8818:
8819: =over 2
8820:
8821: =item (Red) LocalConnection rejecting non local: <ip> ne 127.0.0.1
8822:
8823: A local connection negotiation was attempted by
8824: a host whose IP address was not 127.0.0.1.
8825: The socket is closed and the child will exit.
8826: lond has three ways to establish an encyrption
8827: key with a client:
8828:
8829: =over 2
8830:
8831: =item local
8832:
8833: The key is written and read from a file.
8834: This is only valid for connections from localhost.
8835:
8836: =item insecure
8837:
8838: The key is generated by the server and
8839: transmitted to the client.
8840:
8841: =item ssl (secure)
8842:
8843: An ssl connection is negotiated with the client,
8844: the key is generated by the server and sent to the
8845: client across this ssl connection before the
8846: ssl connectionis terminated and clear text
8847: transmission resumes.
8848:
8849: =back
8850:
8851: =item (Red) LocalConnection: caller is insane! init = <init> and type = <type>
8852:
8853: The client is local but has not sent an initialization
8854: string that is the literal "init:local" The connection
8855: is closed and the child exits.
8856:
8857: =item Red CRITICAL Can't get key file <error>
8858:
8859: SSL key negotiation is being attempted but the call to
8860: lonssl::KeyFile failed. This usually means that the
8861: configuration file is not correctly defining or protecting
8862: the directories/files lonCertificateDirectory or
8863: lonnetPrivateKey
8864: <error> is a string that describes the reason that
8865: the key file could not be located.
8866:
8867: =item (Red) CRITICAL Can't get certificates <error>
8868:
8869: SSL key negotiation failed because we were not able to retrives our certificate
8870: or the CA's certificate in the call to lonssl::CertificateFile
8871: <error> is the textual reason this failed. Usual reasons:
8872:
8873: =over 2
8874:
8875: =item Apache config file for loncapa incorrect:
8876:
8877: one of the variables
8878: lonCertificateDirectory, lonnetCertificateAuthority, or lonnetCertificate
8879: undefined or incorrect
8880:
8881: =item Permission error:
8882:
8883: The directory pointed to by lonCertificateDirectory is not readable by lond
8884:
8885: =item Permission error:
8886:
8887: Files in the directory pointed to by lonCertificateDirectory are not readable by lond.
8888:
8889: =item Installation error:
8890:
8891: Either the certificate authority file or the certificate have not
8892: been installed in lonCertificateDirectory.
8893:
8894: =item (Red) CRITICAL SSL Socket promotion failed: <err>
8895:
8896: The promotion of the connection from plaintext to SSL failed
8897: <err> is the reason for the failure. There are two
8898: system calls involved in the promotion (one of which failed),
8899: a dup to produce
8900: a second fd on the raw socket over which the encrypted data
8901: will flow and IO::SOcket::SSL->new_from_fd which creates
8902: the SSL connection on the duped fd.
8903:
8904: =item (Blue) WARNING client did not respond to challenge
8905:
8906: This occurs on an insecure (non SSL) connection negotiation request.
8907: lond generates some number from the time, the PID and sends it to
8908: the client. The client must respond by echoing this information back.
8909: If the client does not do so, that's a violation of the challenge
8910: protocols and the connection will be failed.
8911:
8912: =item (Red) No manager table. Nobody can manage!!
8913:
8914: lond has the concept of privileged hosts that
8915: can perform remote management function such
8916: as update the hosts.tab. The manager hosts
8917: are described in the
8918: ~httpd/lonTabs/managers.tab file.
8919: this message is logged if this file is missing.
8920:
8921:
8922: =item (Green) Registering manager <dnsname> as <cluster_name> with <ipaddress>
8923:
8924: Reports the successful parse and registration
8925: of a specific manager.
8926:
8927: =item Green existing host <clustername:dnsname>
8928:
8929: The manager host is already defined in the hosts.tab
8930: the information in that table, rather than the info in the
8931: manager table will be used to determine the manager's ip.
8932:
8933: =item (Red) Unable to craete <filename>
8934:
8935: lond has been asked to create new versions of an administrative
8936: file (by a manager). When this is done, the new file is created
8937: in a temp file and then renamed into place so that there are always
8938: usable administrative files, even if the update fails. This failure
8939: message means that the temp file could not be created.
8940: The update is abandoned, and the old file is available for use.
8941:
8942: =item (Green) CopyFile from <oldname> to <newname> failed
8943:
8944: In an update of administrative files, the copy of the existing file to a
8945: backup file failed. The installation of the new file may still succeed,
8946: but there will not be a back up file to rever to (this should probably
8947: be yellow).
8948:
8949: =item (Green) Pushfile: backed up <oldname> to <newname>
8950:
8951: See above, the backup of the old administrative file succeeded.
8952:
8953: =item (Red) Pushfile: Unable to install <filename> <reason>
8954:
8955: The new administrative file could not be installed. In this case,
8956: the old administrative file is still in use.
8957:
8958: =item (Green) Installed new < filename>.
8959:
8960: The new administrative file was successfullly installed.
8961:
8962: =item (Red) Reinitializing lond pid=<pid>
8963:
8964: The lonc child process <pid> will be sent a USR2
8965: signal.
8966:
8967: =item (Red) Reinitializing self
8968:
8969: We've been asked to re-read our administrative files,and
8970: are doing so.
8971:
8972: =item (Yellow) error:Invalid process identifier <ident>
8973:
8974: A reinit command was received, but the target part of the
8975: command was not valid. It must be either
8976: 'lond' or 'lonc' but was <ident>
8977:
8978: =item (Green) isValideditCommand checking: Command = <command> Key = <key> newline = <newline>
8979:
8980: Checking to see if lond has been handed a valid edit
8981: command. It is possible the edit command is not valid
8982: in that case there are no log messages to indicate that.
8983:
8984: =item Result of password change for <username> pwchange_success
8985:
8986: The password for <username> was
8987: successfully changed.
8988:
8989: =item Unable to open <user> passwd to change password
8990:
8991: Could not rewrite the
8992: internal password file for a user
8993:
8994: =item Result of password change for <user> : <result>
8995:
8996: A unix password change for <user> was attempted
8997: and the pipe returned <result>
8998:
8999: =item LWP GET: <message> for <fname> (<remoteurl>)
9000:
9001: The lightweight process fetch for a resource failed
9002: with <message> the local filename that should
9003: have existed/been created was <fname> the
9004: corresponding URI: <remoteurl> This is emitted in several
9005: places.
9006:
9007: =item Unable to move <transname> to <destname>
9008:
9009: From fetch_user_file_handler - the user file was replicated but could not
9010: be mv'd to its final location.
9011:
9012: =item Looking for <domain> <username>
9013:
9014: From user_has_session_handler - This should be a Debug call instead
9015: it indicates lond is about to check whether the specified user has a
9016: session active on the specified domain on the local host.
9017:
9018: =item Client <ip> (<name>) hanging up: <input>
9019:
9020: lond has been asked to exit by its client. The <ip> and <name> identify the
9021: client systemand <input> is the full exit command sent to the server.
9022:
9023: =item Red CRITICAL: ABNORMAL EXIT. child <pid> for server <hostname> died through a crass with this error->[<message>].
9024:
9025: A lond child terminated. NOte that this termination can also occur when the
9026: child receives the QUIT or DIE signals. <pid> is the process id of the child,
9027: <hostname> the host lond is working for, and <message> the reason the child died
9028: to the best of our ability to get it (I would guess that any numeric value
9029: represents and errno value). This is immediately followed by
9030:
9031: =item Famous last words: Catching exception - <log>
9032:
9033: Where log is some recent information about the state of the child.
9034:
9035: =item Red CRITICAL: TIME OUT <pid>
9036:
9037: Some timeout occured for server <pid>. THis is normally a timeout on an LWP
9038: doing an HTTP::GET.
9039:
9040: =item child <pid> died
9041:
9042: The reaper caught a SIGCHILD for the lond child process <pid>
9043: This should be modified to also display the IP of the dying child
9044: $children{$pid}
9045:
9046: =item Unknown child 0 died
9047: A child died but the wait for it returned a pid of zero which really should not
9048: ever happen.
9049:
9050: =item Child <which> - <pid> looks like we missed it's death
9051:
9052: When a sigchild is received, the reaper process checks all children to see if they are
9053: alive. If children are dying quite quickly, the lack of signal queuing can mean
9054: that a signal hearalds the death of more than one child. If so this message indicates
9055: which other one died. <which> is the ip of a dead child
9056:
9057: =item Free socket: <shutdownretval>
9058:
9059: The HUNTSMAN sub was called due to a SIGINT in a child process. The socket is being shutdown.
9060: for whatever reason, <shutdownretval> is printed but in fact shutdown() is not documented
9061: to return anything. This is followed by:
9062:
9063: =item Red CRITICAL: Shutting down
9064:
9065: Just prior to exit.
9066:
9067: =item Free socket: <shutdownretval>
9068:
9069: The HUPSMAN sub was called due to a SIGHUP. all children get killsed, and lond execs itself.
9070: This is followed by:
9071:
9072: =item (Red) CRITICAL: Restarting
9073:
9074: lond is about to exec itself to restart.
9075:
9076: =item (Blue) Updating connections
9077:
9078: (In response to a USR2). All the children (except the one for localhost)
9079: are about to be killed, the hosts tab reread, and Apache reloaded via apachereload.
9080:
9081: =item (Blue) UpdateHosts killing child <pid> for ip <ip>
9082:
9083: Due to USR2 as above.
9084:
9085: =item (Green) keeping child for ip <ip> (pid = <pid>)
9086:
9087: In response to USR2 as above, the child indicated is not being restarted because
9088: it's assumed that we'll always need a child for the localhost.
9089:
9090:
9091: =item Going to check on the children
9092:
9093: Parent is about to check on the health of the child processes.
9094: Note that this is in response to a USR1 sent to the parent lond.
9095: there may be one or more of the next two messages:
9096:
9097: =item <pid> is dead
9098:
9099: A child that we have in our child hash as alive has evidently died.
9100:
9101: =item Child <pid> did not respond
9102:
9103: In the health check the child <pid> did not update/produce a pid_.txt
9104: file when sent it's USR1 signal. That process is killed with a 9 signal, as it's
9105: assumed to be hung in some un-fixable way.
9106:
9107: =item Finished checking children
9108:
9109: Master processs's USR1 processing is cojmplete.
9110:
9111: =item (Red) CRITICAL: ------- Starting ------
9112:
9113: (There are more '-'s on either side). Lond has forked itself off to
9114: form a new session and is about to start actual initialization.
9115:
9116: =item (Green) Attempting to start child (<client>)
9117:
9118: Started a new child process for <client>. Client is IO::Socket object
9119: connected to the child. This was as a result of a TCP/IP connection from a client.
9120:
9121: =item Unable to determine who caller was, getpeername returned nothing
9122:
9123: In child process initialization. either getpeername returned undef or
9124: a zero sized object was returned. Processing continues, but in my opinion,
9125: this should be cause for the child to exit.
9126:
9127: =item Unable to determine clientip
9128:
9129: In child process initialization. The peer address from getpeername was not defined.
9130: The client address is stored as "Unavailable" and processing continues.
9131:
9132: =item (Yellow) INFO: Connection <ip> <name> connection type = <type>
9133:
9134: In child initialization. A good connectionw as received from <ip>.
9135:
9136: =over 2
9137:
9138: =item <name>
9139:
9140: is the name of the client from hosts.tab.
9141:
9142: =item <type>
9143:
9144: Is the connection type which is either
9145:
9146: =over 2
9147:
9148: =item manager
9149:
9150: The connection is from a manager node, not in hosts.tab
9151:
9152: =item client
9153:
9154: the connection is from a non-manager in the hosts.tab
9155:
9156: =item both
9157:
9158: The connection is from a manager in the hosts.tab.
9159:
9160: =back
9161:
9162: =back
9163:
9164: =item (Blue) Certificates not installed -- trying insecure auth
9165:
9166: One of the certificate file, key file or
9167: certificate authority file could not be found for a client attempting
9168: SSL connection intiation. COnnection will be attemptied in in-secure mode.
9169: (this would be a system with an up to date lond that has not gotten a
9170: certificate from us).
9171:
9172: =item (Green) Successful local authentication
9173:
9174: A local connection successfully negotiated the encryption key.
9175: In this case the IDEA key is in a file (that is hopefully well protected).
9176:
9177: =item (Green) Successful ssl authentication with <client>
9178:
9179: The client (<client> is the peer's name in hosts.tab), has successfully
9180: negotiated an SSL connection with this child process.
9181:
9182: =item (Green) Successful insecure authentication with <client>
9183:
9184:
9185: The client has successfully negotiated an insecure connection withthe child process.
9186:
9187: =item (Yellow) Attempted insecure connection disallowed
9188:
9189: The client attempted and failed to successfully negotiate a successful insecure
9190: connection. This can happen either because the variable londAllowInsecure is false
9191: or undefined, or becuse the child did not successfully echo back the challenge
9192: string.
9193:
9194:
9195: =back
9196:
1.441 raeburn 9197: =back
9198:
1.409 foxr 9199:
9200: =cut
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