Annotation of loncom/lond, revision 1.489.2.43.2.1
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 2021/12/21 16:22:14 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 $'; #' 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);
1.489.2.15 raeburn 656: } elsif ($filename eq 'dns_host' || $filename eq 'dns_domain') {
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:
1.225 foxr 2410: #
2411: # Determines if this is the home server for a user. The home server
2412: # for a user will have his/her lon-capa passwd file. Therefore all we need
2413: # to do is determine if this file exists.
2414: #
2415: # Parameters:
2416: # $cmd - The command that got us here.
2417: # $tail - Tail of the command (remaining parameters).
2418: # $client - File descriptor connected to client.
2419: # Returns
2420: # 0 - Requested to exit, caller should shut down.
2421: # 1 - Continue processing.
2422: # Implicit inputs:
2423: # The authentication systems describe above have their own forms of implicit
2424: # input into the authentication process that are described above.
2425: #
2426: sub is_home_handler {
2427: my ($cmd, $tail, $client) = @_;
2428:
2429: my $userinput = "$cmd:$tail";
2430:
2431: my ($udom,$uname)=split(/:/,$tail);
2432: chomp($uname);
2433: my $passfile = &password_filename($udom, $uname);
2434: if($passfile) {
2435: &Reply( $client, "found\n", $userinput);
2436: } else {
2437: &Failure($client, "not_found\n", $userinput);
2438: }
2439: return 1;
2440: }
2441: ®ister_handler("home", \&is_home_handler, 0,1,0);
2442:
2443: #
1.434 www 2444: # Process an update request for a resource.
2445: # A resource has been modified that we hold a subscription to.
1.225 foxr 2446: # If the resource is not local, then we must update, or at least invalidate our
2447: # cached copy of the resource.
2448: # Parameters:
2449: # $cmd - The command that got us here.
2450: # $tail - Tail of the command (remaining parameters).
2451: # $client - File descriptor connected to client.
2452: # Returns
2453: # 0 - Requested to exit, caller should shut down.
2454: # 1 - Continue processing.
2455: # Implicit inputs:
2456: # The authentication systems describe above have their own forms of implicit
2457: # input into the authentication process that are described above.
2458: #
2459: sub update_resource_handler {
2460:
2461: my ($cmd, $tail, $client) = @_;
2462:
2463: my $userinput = "$cmd:$tail";
2464:
2465: my $fname= $tail; # This allows interactive testing
2466:
2467:
2468: my $ownership=ishome($fname);
2469: if ($ownership eq 'not_owner') {
2470: if (-e $fname) {
1.434 www 2471: # Delete preview file, if exists
2472: unlink("$fname.tmp");
2473: # Get usage stats
1.225 foxr 2474: my ($dev,$ino,$mode,$nlink,$uid,$gid,$rdev,$size,
2475: $atime,$mtime,$ctime,$blksize,$blocks)=stat($fname);
2476: my $now=time;
2477: my $since=$now-$atime;
1.434 www 2478: # If the file has not been used within lonExpire seconds,
2479: # unsubscribe from it and delete local copy
1.225 foxr 2480: if ($since>$perlvar{'lonExpire'}) {
1.365 albertel 2481: my $reply=&Apache::lonnet::reply("unsub:$fname","$clientname");
1.308 albertel 2482: &devalidate_meta_cache($fname);
1.225 foxr 2483: unlink("$fname");
1.334 albertel 2484: unlink("$fname.meta");
1.225 foxr 2485: } else {
1.434 www 2486: # Yes, this is in active use. Get a fresh copy. Since it might be in
2487: # very active use and huge (like a movie), copy it to "in.transfer" filename first.
1.225 foxr 2488: my $transname="$fname.in.transfer";
1.365 albertel 2489: my $remoteurl=&Apache::lonnet::reply("sub:$fname","$clientname");
1.225 foxr 2490: my $response;
1.455 www 2491: # FIXME: cannot replicate files that take more than two minutes to transfer?
2492: # alarm(120);
2493: # FIXME: this should use the LWP mechanism, not internal alarms.
2494: alarm(1200);
1.225 foxr 2495: {
2496: my $ua=new LWP::UserAgent;
2497: my $request=new HTTP::Request('GET',"$remoteurl");
2498: $response=$ua->request($request,$transname);
2499: }
2500: alarm(0);
2501: if ($response->is_error()) {
1.489.2.30 raeburn 2502: my $reply=&Apache::lonnet::reply("unsub:$fname","$clientname");
2503: &devalidate_meta_cache($fname);
2504: if (-e $transname) {
2505: unlink($transname);
2506: }
2507: unlink($fname);
1.225 foxr 2508: my $message=$response->status_line;
2509: &logthis("LWP GET: $message for $fname ($remoteurl)");
2510: } else {
2511: if ($remoteurl!~/\.meta$/) {
1.455 www 2512: # FIXME: isn't there an internal LWP mechanism for this?
1.225 foxr 2513: alarm(120);
2514: {
2515: my $ua=new LWP::UserAgent;
2516: my $mrequest=new HTTP::Request('GET',$remoteurl.'.meta');
2517: my $mresponse=$ua->request($mrequest,$fname.'.meta');
2518: if ($mresponse->is_error()) {
2519: unlink($fname.'.meta');
2520: }
2521: }
2522: alarm(0);
2523: }
1.434 www 2524: # we successfully transfered, copy file over to real name
1.225 foxr 2525: rename($transname,$fname);
1.308 albertel 2526: &devalidate_meta_cache($fname);
1.225 foxr 2527: }
2528: }
2529: &Reply( $client, "ok\n", $userinput);
2530: } else {
2531: &Failure($client, "not_found\n", $userinput);
2532: }
2533: } else {
2534: &Failure($client, "rejected\n", $userinput);
2535: }
2536: return 1;
2537: }
2538: ®ister_handler("update", \&update_resource_handler, 0 ,1, 0);
2539:
1.308 albertel 2540: sub devalidate_meta_cache {
2541: my ($url) = @_;
2542: use Cache::Memcached;
2543: my $memcache = new Cache::Memcached({'servers'=>['127.0.0.1:11211']});
1.365 albertel 2544: $url = &Apache::lonnet::declutter($url);
1.308 albertel 2545: $url =~ s-\.meta$--;
2546: my $id = &escape('meta:'.$url);
2547: $memcache->delete($id);
2548: }
2549:
1.225 foxr 2550: #
1.226 foxr 2551: # Fetch a user file from a remote server to the user's home directory
2552: # userfiles subdir.
1.225 foxr 2553: # Parameters:
2554: # $cmd - The command that got us here.
2555: # $tail - Tail of the command (remaining parameters).
2556: # $client - File descriptor connected to client.
2557: # Returns
2558: # 0 - Requested to exit, caller should shut down.
2559: # 1 - Continue processing.
2560: #
2561: sub fetch_user_file_handler {
2562:
2563: my ($cmd, $tail, $client) = @_;
2564:
2565: my $userinput = "$cmd:$tail";
2566: my $fname = $tail;
1.232 foxr 2567: my ($udom,$uname,$ufile) = ($fname =~ m|^([^/]+)/([^/]+)/(.+)$|);
1.225 foxr 2568: my $udir=&propath($udom,$uname).'/userfiles';
2569: unless (-e $udir) {
2570: mkdir($udir,0770);
2571: }
1.232 foxr 2572: Debug("fetch user file for $fname");
1.225 foxr 2573: if (-e $udir) {
2574: $ufile=~s/^[\.\~]+//;
1.232 foxr 2575:
2576: # IF necessary, create the path right down to the file.
2577: # Note that any regular files in the way of this path are
2578: # wiped out to deal with some earlier folly of mine.
2579:
1.267 raeburn 2580: if (!&mkpath($udir.'/'.$ufile)) {
1.264 albertel 2581: &Failure($client, "unable_to_create\n", $userinput);
1.232 foxr 2582: }
2583:
1.225 foxr 2584: my $destname=$udir.'/'.$ufile;
2585: my $transname=$udir.'/'.$ufile.'.in.transit';
1.476 raeburn 2586: my $clientprotocol=$Apache::lonnet::protocol{$clientname};
2587: $clientprotocol = 'http' if ($clientprotocol ne 'https');
1.486 raeburn 2588: my $clienthost = &Apache::lonnet::hostname($clientname);
2589: my $remoteurl=$clientprotocol.'://'.$clienthost.'/userfiles/'.$fname;
1.225 foxr 2590: my $response;
1.232 foxr 2591: Debug("Remote URL : $remoteurl Transfername $transname Destname: $destname");
1.225 foxr 2592: alarm(120);
2593: {
2594: my $ua=new LWP::UserAgent;
2595: my $request=new HTTP::Request('GET',"$remoteurl");
2596: $response=$ua->request($request,$transname);
2597: }
2598: alarm(0);
2599: if ($response->is_error()) {
2600: unlink($transname);
2601: my $message=$response->status_line;
2602: &logthis("LWP GET: $message for $fname ($remoteurl)");
2603: &Failure($client, "failed\n", $userinput);
2604: } else {
1.232 foxr 2605: Debug("Renaming $transname to $destname");
1.225 foxr 2606: if (!rename($transname,$destname)) {
2607: &logthis("Unable to move $transname to $destname");
2608: unlink($transname);
2609: &Failure($client, "failed\n", $userinput);
2610: } else {
1.489.2.2 raeburn 2611: if ($fname =~ /^default.+\.(page|sequence)$/) {
2612: my ($major,$minor) = split(/\./,$clientversion);
2613: if (($major < 2) || ($major == 2 && $minor < 11)) {
2614: my $now = time;
2615: &Apache::lonnet::do_cache_new('crschange',$udom.'_'.$uname,$now,600);
2616: my $key = &escape('internal.contentchange');
2617: my $what = "$key=$now";
2618: my $hashref = &tie_user_hash($udom,$uname,'environment',
2619: &GDBM_WRCREAT(),"P",$what);
2620: if ($hashref) {
2621: $hashref->{$key}=$now;
2622: if (!&untie_user_hash($hashref)) {
2623: &logthis("error: ".($!+0)." untie (GDBM) failed ".
2624: "when updating internal.contentchange");
2625: }
2626: }
2627: }
2628: }
1.225 foxr 2629: &Reply($client, "ok\n", $userinput);
2630: }
2631: }
2632: } else {
2633: &Failure($client, "not_home\n", $userinput);
2634: }
2635: return 1;
2636: }
2637: ®ister_handler("fetchuserfile", \&fetch_user_file_handler, 0, 1, 0);
2638:
1.226 foxr 2639: #
2640: # Remove a file from a user's home directory userfiles subdirectory.
2641: # Parameters:
2642: # cmd - the Lond request keyword that got us here.
2643: # tail - the part of the command past the keyword.
2644: # client- File descriptor connected with the client.
2645: #
2646: # Returns:
2647: # 1 - Continue processing.
2648: sub remove_user_file_handler {
2649: my ($cmd, $tail, $client) = @_;
2650:
2651: my ($fname) = split(/:/, $tail); # Get rid of any tailing :'s lonc may have sent.
2652:
2653: my ($udom,$uname,$ufile) = ($fname =~ m|^([^/]+)/([^/]+)/(.+)$|);
2654: if ($ufile =~m|/\.\./|) {
2655: # any files paths with /../ in them refuse
2656: # to deal with
2657: &Failure($client, "refused\n", "$cmd:$tail");
2658: } else {
2659: my $udir = &propath($udom,$uname);
2660: if (-e $udir) {
2661: my $file=$udir.'/userfiles/'.$ufile;
2662: if (-e $file) {
1.253 foxr 2663: #
2664: # If the file is a regular file unlink is fine...
1.489.2.19 raeburn 2665: # However it's possible the client wants a dir
2666: # removed, in which case rmdir is more appropriate
2667: # Note: rmdir will only remove an empty directory.
1.253 foxr 2668: #
1.240 banghart 2669: if (-f $file){
1.241 albertel 2670: unlink($file);
1.489.2.19 raeburn 2671: # for html files remove the associated .bak file
2672: # which may have been created by the editor.
2673: if ($ufile =~ m{^((docs|supplemental)/(?:\d+|default)/\d+(?:|/.+)/)[^/]+\.x?html?$}i) {
2674: my $path = $1;
2675: if (-e $file.'.bak') {
2676: unlink($file.'.bak');
2677: }
2678: }
1.241 albertel 2679: } elsif(-d $file) {
2680: rmdir($file);
1.240 banghart 2681: }
1.226 foxr 2682: if (-e $file) {
1.253 foxr 2683: # File is still there after we deleted it ?!?
2684:
1.226 foxr 2685: &Failure($client, "failed\n", "$cmd:$tail");
2686: } else {
2687: &Reply($client, "ok\n", "$cmd:$tail");
2688: }
2689: } else {
2690: &Failure($client, "not_found\n", "$cmd:$tail");
2691: }
2692: } else {
2693: &Failure($client, "not_home\n", "$cmd:$tail");
2694: }
2695: }
2696: return 1;
2697: }
2698: ®ister_handler("removeuserfile", \&remove_user_file_handler, 0,1,0);
2699:
1.236 albertel 2700: #
2701: # make a directory in a user's home directory userfiles subdirectory.
2702: # Parameters:
2703: # cmd - the Lond request keyword that got us here.
2704: # tail - the part of the command past the keyword.
2705: # client- File descriptor connected with the client.
2706: #
2707: # Returns:
2708: # 1 - Continue processing.
2709: sub mkdir_user_file_handler {
2710: my ($cmd, $tail, $client) = @_;
2711:
2712: my ($dir) = split(/:/, $tail); # Get rid of any tailing :'s lonc may have sent.
2713: $dir=&unescape($dir);
2714: my ($udom,$uname,$ufile) = ($dir =~ m|^([^/]+)/([^/]+)/(.+)$|);
2715: if ($ufile =~m|/\.\./|) {
2716: # any files paths with /../ in them refuse
2717: # to deal with
2718: &Failure($client, "refused\n", "$cmd:$tail");
2719: } else {
2720: my $udir = &propath($udom,$uname);
2721: if (-e $udir) {
1.264 albertel 2722: my $newdir=$udir.'/userfiles/'.$ufile.'/';
2723: if (!&mkpath($newdir)) {
2724: &Failure($client, "failed\n", "$cmd:$tail");
1.236 albertel 2725: }
1.264 albertel 2726: &Reply($client, "ok\n", "$cmd:$tail");
1.236 albertel 2727: } else {
2728: &Failure($client, "not_home\n", "$cmd:$tail");
2729: }
2730: }
2731: return 1;
2732: }
2733: ®ister_handler("mkdiruserfile", \&mkdir_user_file_handler, 0,1,0);
2734:
1.237 albertel 2735: #
2736: # rename a file in a user's home directory userfiles subdirectory.
2737: # Parameters:
2738: # cmd - the Lond request keyword that got us here.
2739: # tail - the part of the command past the keyword.
2740: # client- File descriptor connected with the client.
2741: #
2742: # Returns:
2743: # 1 - Continue processing.
2744: sub rename_user_file_handler {
2745: my ($cmd, $tail, $client) = @_;
2746:
2747: my ($udom,$uname,$old,$new) = split(/:/, $tail);
2748: $old=&unescape($old);
2749: $new=&unescape($new);
2750: if ($new =~m|/\.\./| || $old =~m|/\.\./|) {
2751: # any files paths with /../ in them refuse to deal with
2752: &Failure($client, "refused\n", "$cmd:$tail");
2753: } else {
2754: my $udir = &propath($udom,$uname);
2755: if (-e $udir) {
2756: my $oldfile=$udir.'/userfiles/'.$old;
2757: my $newfile=$udir.'/userfiles/'.$new;
2758: if (-e $newfile) {
2759: &Failure($client, "exists\n", "$cmd:$tail");
2760: } elsif (! -e $oldfile) {
2761: &Failure($client, "not_found\n", "$cmd:$tail");
2762: } else {
2763: if (!rename($oldfile,$newfile)) {
2764: &Failure($client, "failed\n", "$cmd:$tail");
2765: } else {
2766: &Reply($client, "ok\n", "$cmd:$tail");
2767: }
2768: }
2769: } else {
2770: &Failure($client, "not_home\n", "$cmd:$tail");
2771: }
2772: }
2773: return 1;
2774: }
2775: ®ister_handler("renameuserfile", \&rename_user_file_handler, 0,1,0);
2776:
1.227 foxr 2777: #
1.382 albertel 2778: # Checks if the specified user has an active session on the server
2779: # return ok if so, not_found if not
2780: #
2781: # Parameters:
2782: # cmd - The request keyword that dispatched to tus.
2783: # tail - The tail of the request (colon separated parameters).
2784: # client - Filehandle open on the client.
2785: # Return:
2786: # 1.
2787: sub user_has_session_handler {
2788: my ($cmd, $tail, $client) = @_;
2789:
2790: my ($udom, $uname) = map { &unescape($_) } (split(/:/, $tail));
2791:
2792: opendir(DIR,$perlvar{'lonIDsDir'});
2793: my $filename;
2794: while ($filename=readdir(DIR)) {
2795: last if ($filename=~/^\Q$uname\E_\d+_\Q$udom\E_/);
2796: }
2797: if ($filename) {
2798: &Reply($client, "ok\n", "$cmd:$tail");
2799: } else {
2800: &Failure($client, "not_found\n", "$cmd:$tail");
2801: }
2802: return 1;
2803:
2804: }
2805: ®ister_handler("userhassession", \&user_has_session_handler, 0,1,0);
2806:
2807: #
1.263 albertel 2808: # Authenticate access to a user file by checking that the token the user's
2809: # passed also exists in their session file
1.227 foxr 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 token_auth_user_file_handler {
2818: my ($cmd, $tail, $client) = @_;
2819:
2820: my ($fname, $session) = split(/:/, $tail);
2821:
2822: chomp($session);
1.393 raeburn 2823: my $reply="non_auth";
1.343 albertel 2824: my $file = $perlvar{'lonIDsDir'}.'/'.$session.'.id';
2825: if (open(ENVIN,"$file")) {
1.332 albertel 2826: flock(ENVIN,LOCK_SH);
1.343 albertel 2827: tie(my %disk_env,'GDBM_File',"$file",&GDBM_READER(),0640);
2828: if (exists($disk_env{"userfile.$fname"})) {
1.393 raeburn 2829: $reply="ok";
1.343 albertel 2830: } else {
2831: foreach my $envname (keys(%disk_env)) {
2832: if ($envname=~ m|^userfile\.\Q$fname\E|) {
1.393 raeburn 2833: $reply="ok";
1.343 albertel 2834: last;
2835: }
2836: }
1.227 foxr 2837: }
1.343 albertel 2838: untie(%disk_env);
1.227 foxr 2839: close(ENVIN);
1.387 albertel 2840: &Reply($client, \$reply, "$cmd:$tail");
1.227 foxr 2841: } else {
2842: &Failure($client, "invalid_token\n", "$cmd:$tail");
2843: }
2844: return 1;
2845:
2846: }
2847: ®ister_handler("tokenauthuserfile", \&token_auth_user_file_handler, 0,1,0);
1.229 foxr 2848:
2849: #
2850: # Unsubscribe from a resource.
2851: #
2852: # Parameters:
2853: # $cmd - The command that got us here.
2854: # $tail - Tail of the command (remaining parameters).
2855: # $client - File descriptor connected to client.
2856: # Returns
2857: # 0 - Requested to exit, caller should shut down.
2858: # 1 - Continue processing.
2859: #
2860: sub unsubscribe_handler {
2861: my ($cmd, $tail, $client) = @_;
2862:
2863: my $userinput= "$cmd:$tail";
2864:
2865: my ($fname) = split(/:/,$tail); # Split in case there's extrs.
2866:
2867: &Debug("Unsubscribing $fname");
2868: if (-e $fname) {
2869: &Debug("Exists");
2870: &Reply($client, &unsub($fname,$clientip), $userinput);
2871: } else {
2872: &Failure($client, "not_found\n", $userinput);
2873: }
2874: return 1;
2875: }
2876: ®ister_handler("unsub", \&unsubscribe_handler, 0, 1, 0);
1.263 albertel 2877:
1.230 foxr 2878: # Subscribe to a resource
2879: #
2880: # Parameters:
2881: # $cmd - The command that got us here.
2882: # $tail - Tail of the command (remaining parameters).
2883: # $client - File descriptor connected to client.
2884: # Returns
2885: # 0 - Requested to exit, caller should shut down.
2886: # 1 - Continue processing.
2887: #
2888: sub subscribe_handler {
2889: my ($cmd, $tail, $client)= @_;
2890:
2891: my $userinput = "$cmd:$tail";
2892:
2893: &Reply( $client, &subscribe($userinput,$clientip), $userinput);
2894:
2895: return 1;
2896: }
2897: ®ister_handler("sub", \&subscribe_handler, 0, 1, 0);
2898:
2899: #
1.379 albertel 2900: # Determine the latest version of a resource (it looks for the highest
2901: # past version and then returns that +1)
1.230 foxr 2902: #
2903: # Parameters:
2904: # $cmd - The command that got us here.
2905: # $tail - Tail of the command (remaining parameters).
1.379 albertel 2906: # (Should consist of an absolute path to a file)
1.230 foxr 2907: # $client - File descriptor connected to client.
2908: # Returns
2909: # 0 - Requested to exit, caller should shut down.
2910: # 1 - Continue processing.
2911: #
2912: sub current_version_handler {
2913: my ($cmd, $tail, $client) = @_;
2914:
2915: my $userinput= "$cmd:$tail";
2916:
2917: my $fname = $tail;
2918: &Reply( $client, ¤tversion($fname)."\n", $userinput);
2919: return 1;
2920:
2921: }
2922: ®ister_handler("currentversion", \¤t_version_handler, 0, 1, 0);
2923:
2924: # Make an entry in a user's activity log.
2925: #
2926: # Parameters:
2927: # $cmd - The command that got us here.
2928: # $tail - Tail of the command (remaining parameters).
2929: # $client - File descriptor connected to client.
2930: # Returns
2931: # 0 - Requested to exit, caller should shut down.
2932: # 1 - Continue processing.
2933: #
2934: sub activity_log_handler {
2935: my ($cmd, $tail, $client) = @_;
2936:
2937:
2938: my $userinput= "$cmd:$tail";
2939:
2940: my ($udom,$uname,$what)=split(/:/,$tail);
2941: chomp($what);
2942: my $proname=&propath($udom,$uname);
2943: my $now=time;
2944: my $hfh;
2945: if ($hfh=IO::File->new(">>$proname/activity.log")) {
2946: print $hfh "$now:$clientname:$what\n";
2947: &Reply( $client, "ok\n", $userinput);
2948: } else {
2949: &Failure($client, "error: ".($!+0)." IO::File->new Failed "
2950: ."while attempting log\n",
2951: $userinput);
2952: }
2953:
2954: return 1;
2955: }
1.263 albertel 2956: ®ister_handler("log", \&activity_log_handler, 0, 1, 0);
1.230 foxr 2957:
2958: #
2959: # Put a namespace entry in a user profile hash.
2960: # My druthers would be for this to be an encrypted interaction too.
2961: # anything that might be an inadvertent covert channel about either
2962: # user authentication or user personal information....
2963: #
2964: # Parameters:
2965: # $cmd - The command that got us here.
2966: # $tail - Tail of the command (remaining parameters).
2967: # $client - File descriptor connected to client.
2968: # Returns
2969: # 0 - Requested to exit, caller should shut down.
2970: # 1 - Continue processing.
2971: #
2972: sub put_user_profile_entry {
2973: my ($cmd, $tail, $client) = @_;
1.229 foxr 2974:
1.230 foxr 2975: my $userinput = "$cmd:$tail";
2976:
1.242 raeburn 2977: my ($udom,$uname,$namespace,$what) =split(/:/,$tail,4);
1.230 foxr 2978: if ($namespace ne 'roles') {
2979: chomp($what);
2980: my $hashref = &tie_user_hash($udom, $uname, $namespace,
2981: &GDBM_WRCREAT(),"P",$what);
2982: if($hashref) {
2983: my @pairs=split(/\&/,$what);
2984: foreach my $pair (@pairs) {
2985: my ($key,$value)=split(/=/,$pair);
2986: $hashref->{$key}=$value;
2987: }
1.311 albertel 2988: if (&untie_user_hash($hashref)) {
1.230 foxr 2989: &Reply( $client, "ok\n", $userinput);
2990: } else {
2991: &Failure($client, "error: ".($!+0)." untie(GDBM) failed ".
2992: "while attempting put\n",
2993: $userinput);
2994: }
2995: } else {
1.316 albertel 2996: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
1.230 foxr 2997: "while attempting put\n", $userinput);
2998: }
2999: } else {
3000: &Failure( $client, "refused\n", $userinput);
3001: }
3002:
3003: return 1;
3004: }
3005: ®ister_handler("put", \&put_user_profile_entry, 0, 1, 0);
3006:
1.283 albertel 3007: # Put a piece of new data in hash, returns error if entry already exists
3008: # Parameters:
3009: # $cmd - The command that got us here.
3010: # $tail - Tail of the command (remaining parameters).
3011: # $client - File descriptor connected to client.
3012: # Returns
3013: # 0 - Requested to exit, caller should shut down.
3014: # 1 - Continue processing.
3015: #
3016: sub newput_user_profile_entry {
3017: my ($cmd, $tail, $client) = @_;
3018:
3019: my $userinput = "$cmd:$tail";
3020:
3021: my ($udom,$uname,$namespace,$what) =split(/:/,$tail,4);
3022: if ($namespace eq 'roles') {
3023: &Failure( $client, "refused\n", $userinput);
3024: return 1;
3025: }
3026:
3027: chomp($what);
3028:
3029: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3030: &GDBM_WRCREAT(),"N",$what);
3031: if(!$hashref) {
1.316 albertel 3032: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
1.283 albertel 3033: "while attempting put\n", $userinput);
3034: return 1;
3035: }
3036:
3037: my @pairs=split(/\&/,$what);
3038: foreach my $pair (@pairs) {
3039: my ($key,$value)=split(/=/,$pair);
3040: if (exists($hashref->{$key})) {
1.489.2.17 raeburn 3041: if (!&untie_user_hash($hashref)) {
3042: &logthis("error: ".($!+0)." untie (GDBM) failed ".
3043: "while attempting newput - early out as key exists");
3044: }
1.283 albertel 3045: &Failure($client, "key_exists: ".$key."\n",$userinput);
3046: return 1;
3047: }
3048: }
3049:
3050: foreach my $pair (@pairs) {
3051: my ($key,$value)=split(/=/,$pair);
3052: $hashref->{$key}=$value;
3053: }
3054:
1.311 albertel 3055: if (&untie_user_hash($hashref)) {
1.283 albertel 3056: &Reply( $client, "ok\n", $userinput);
3057: } else {
3058: &Failure($client, "error: ".($!+0)." untie(GDBM) failed ".
3059: "while attempting put\n",
3060: $userinput);
3061: }
3062: return 1;
3063: }
3064: ®ister_handler("newput", \&newput_user_profile_entry, 0, 1, 0);
3065:
1.230 foxr 3066: #
3067: # Increment a profile entry in the user history file.
3068: # The history contains keyword value pairs. In this case,
3069: # The value itself is a pair of numbers. The first, the current value
3070: # the second an increment that this function applies to the current
3071: # value.
3072: #
3073: # Parameters:
3074: # $cmd - The command that got us here.
3075: # $tail - Tail of the command (remaining parameters).
3076: # $client - File descriptor connected to client.
3077: # Returns
3078: # 0 - Requested to exit, caller should shut down.
3079: # 1 - Continue processing.
3080: #
3081: sub increment_user_value_handler {
3082: my ($cmd, $tail, $client) = @_;
3083:
3084: my $userinput = "$cmd:$tail";
3085:
3086: my ($udom,$uname,$namespace,$what) =split(/:/,$tail);
3087: if ($namespace ne 'roles') {
3088: chomp($what);
3089: my $hashref = &tie_user_hash($udom, $uname,
3090: $namespace, &GDBM_WRCREAT(),
3091: "P",$what);
3092: if ($hashref) {
3093: my @pairs=split(/\&/,$what);
3094: foreach my $pair (@pairs) {
3095: my ($key,$value)=split(/=/,$pair);
1.284 raeburn 3096: $value = &unescape($value);
1.230 foxr 3097: # We could check that we have a number...
3098: if (! defined($value) || $value eq '') {
3099: $value = 1;
3100: }
3101: $hashref->{$key}+=$value;
1.284 raeburn 3102: if ($namespace eq 'nohist_resourcetracker') {
3103: if ($hashref->{$key} < 0) {
3104: $hashref->{$key} = 0;
3105: }
3106: }
1.230 foxr 3107: }
1.311 albertel 3108: if (&untie_user_hash($hashref)) {
1.230 foxr 3109: &Reply( $client, "ok\n", $userinput);
3110: } else {
3111: &Failure($client, "error: ".($!+0)." untie(GDBM) failed ".
3112: "while attempting inc\n", $userinput);
3113: }
3114: } else {
3115: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
3116: "while attempting inc\n", $userinput);
3117: }
3118: } else {
3119: &Failure($client, "refused\n", $userinput);
3120: }
3121:
3122: return 1;
3123: }
3124: ®ister_handler("inc", \&increment_user_value_handler, 0, 1, 0);
3125:
3126: #
3127: # Put a new role for a user. Roles are LonCAPA's packaging of permissions.
3128: # Each 'role' a user has implies a set of permissions. Adding a new role
3129: # for a person grants the permissions packaged with that role
3130: # to that user when the role is selected.
3131: #
3132: # Parameters:
3133: # $cmd - The command string (rolesput).
3134: # $tail - The remainder of the request line. For rolesput this
3135: # consists of a colon separated list that contains:
3136: # The domain and user that is granting the role (logged).
3137: # The domain and user that is getting the role.
3138: # The roles being granted as a set of & separated pairs.
3139: # each pair a key value pair.
3140: # $client - File descriptor connected to the client.
3141: # Returns:
3142: # 0 - If the daemon should exit
3143: # 1 - To continue processing.
3144: #
3145: #
3146: sub roles_put_handler {
3147: my ($cmd, $tail, $client) = @_;
3148:
3149: my $userinput = "$cmd:$tail";
3150:
3151: my ( $exedom, $exeuser, $udom, $uname, $what) = split(/:/,$tail);
3152:
3153:
3154: my $namespace='roles';
3155: chomp($what);
3156: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3157: &GDBM_WRCREAT(), "P",
3158: "$exedom:$exeuser:$what");
3159: #
3160: # Log the attempt to set a role. The {}'s here ensure that the file
3161: # handle is open for the minimal amount of time. Since the flush
3162: # is done on close this improves the chances the log will be an un-
3163: # corrupted ordered thing.
3164: if ($hashref) {
1.261 foxr 3165: my $pass_entry = &get_auth_type($udom, $uname);
3166: my ($auth_type,$pwd) = split(/:/, $pass_entry);
3167: $auth_type = $auth_type.":";
1.230 foxr 3168: my @pairs=split(/\&/,$what);
3169: foreach my $pair (@pairs) {
3170: my ($key,$value)=split(/=/,$pair);
3171: &manage_permissions($key, $udom, $uname,
1.260 foxr 3172: $auth_type);
1.230 foxr 3173: $hashref->{$key}=$value;
3174: }
1.311 albertel 3175: if (&untie_user_hash($hashref)) {
1.230 foxr 3176: &Reply($client, "ok\n", $userinput);
3177: } else {
3178: &Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ".
3179: "while attempting rolesput\n", $userinput);
3180: }
3181: } else {
3182: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
3183: "while attempting rolesput\n", $userinput);
3184: }
3185: return 1;
3186: }
3187: ®ister_handler("rolesput", \&roles_put_handler, 1,1,0); # Encoded client only.
3188:
3189: #
1.231 foxr 3190: # Deletes (removes) a role for a user. This is equivalent to removing
3191: # a permissions package associated with the role from the user's profile.
3192: #
3193: # Parameters:
3194: # $cmd - The command (rolesdel)
3195: # $tail - The remainder of the request line. This consists
3196: # of:
3197: # The domain and user requesting the change (logged)
3198: # The domain and user being changed.
3199: # The roles being revoked. These are shipped to us
3200: # as a bunch of & separated role name keywords.
3201: # $client - The file handle open on the client.
3202: # Returns:
3203: # 1 - Continue processing
3204: # 0 - Exit.
3205: #
3206: sub roles_delete_handler {
3207: my ($cmd, $tail, $client) = @_;
3208:
3209: my $userinput = "$cmd:$tail";
3210:
3211: my ($exedom,$exeuser,$udom,$uname,$what)=split(/:/,$tail);
3212: &Debug("cmd = ".$cmd." exedom= ".$exedom."user = ".$exeuser." udom=".$udom.
3213: "what = ".$what);
3214: my $namespace='roles';
3215: chomp($what);
3216: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3217: &GDBM_WRCREAT(), "D",
3218: "$exedom:$exeuser:$what");
3219:
3220: if ($hashref) {
3221: my @rolekeys=split(/\&/,$what);
3222:
3223: foreach my $key (@rolekeys) {
3224: delete $hashref->{$key};
3225: }
1.315 albertel 3226: if (&untie_user_hash($hashref)) {
1.231 foxr 3227: &Reply($client, "ok\n", $userinput);
3228: } else {
3229: &Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ".
3230: "while attempting rolesdel\n", $userinput);
3231: }
3232: } else {
3233: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
3234: "while attempting rolesdel\n", $userinput);
3235: }
3236:
3237: return 1;
3238: }
3239: ®ister_handler("rolesdel", \&roles_delete_handler, 1,1, 0); # Encoded client only
3240:
3241: # Unencrypted get from a user's profile database. See
3242: # GetProfileEntryEncrypted for a version that does end-to-end encryption.
3243: # This function retrieves a keyed item from a specific named database in the
3244: # user's directory.
3245: #
3246: # Parameters:
3247: # $cmd - Command request keyword (get).
3248: # $tail - Tail of the command. This is a colon separated list
3249: # consisting of the domain and username that uniquely
3250: # identifies the profile,
3251: # The 'namespace' which selects the gdbm file to
3252: # do the lookup in,
3253: # & separated list of keys to lookup. Note that
3254: # the values are returned as an & separated list too.
3255: # $client - File descriptor open on the client.
3256: # Returns:
3257: # 1 - Continue processing.
3258: # 0 - Exit.
3259: #
3260: sub get_profile_entry {
3261: my ($cmd, $tail, $client) = @_;
3262:
3263: my $userinput= "$cmd:$tail";
3264:
3265: my ($udom,$uname,$namespace,$what) = split(/:/,$tail);
3266: chomp($what);
1.255 foxr 3267:
1.390 raeburn 3268:
1.255 foxr 3269: my $replystring = read_profile($udom, $uname, $namespace, $what);
3270: my ($first) = split(/:/,$replystring);
3271: if($first ne "error") {
1.387 albertel 3272: &Reply($client, \$replystring, $userinput);
1.231 foxr 3273: } else {
1.255 foxr 3274: &Failure($client, $replystring." while attempting get\n", $userinput);
1.231 foxr 3275: }
3276: return 1;
1.255 foxr 3277:
3278:
1.231 foxr 3279: }
3280: ®ister_handler("get", \&get_profile_entry, 0,1,0);
3281:
3282: #
3283: # Process the encrypted get request. Note that the request is sent
3284: # in clear, but the reply is encrypted. This is a small covert channel:
3285: # information about the sensitive keys is given to the snooper. Just not
3286: # information about the values of the sensitive key. Hmm if I wanted to
3287: # know these I'd snoop for the egets. Get the profile item names from them
3288: # and then issue a get for them since there's no enforcement of the
3289: # requirement of an encrypted get for particular profile items. If I
3290: # were re-doing this, I'd force the request to be encrypted as well as the
3291: # reply. I'd also just enforce encrypted transactions for all gets since
3292: # that would prevent any covert channel snooping.
3293: #
3294: # Parameters:
3295: # $cmd - Command keyword of request (eget).
1.489.2.32 raeburn 3296: # $tail - Tail of the command. See GetProfileEntry
3297: # for more information about this.
1.231 foxr 3298: # $client - File open on the client.
3299: # Returns:
3300: # 1 - Continue processing
3301: # 0 - server should exit.
3302: sub get_profile_entry_encrypted {
3303: my ($cmd, $tail, $client) = @_;
3304:
3305: my $userinput = "$cmd:$tail";
3306:
1.339 albertel 3307: my ($udom,$uname,$namespace,$what) = split(/:/,$tail);
1.231 foxr 3308: chomp($what);
1.255 foxr 3309: my $qresult = read_profile($udom, $uname, $namespace, $what);
3310: my ($first) = split(/:/, $qresult);
3311: if($first ne "error") {
3312:
3313: if ($cipher) {
3314: my $cmdlength=length($qresult);
3315: $qresult.=" ";
3316: my $encqresult='';
3317: for(my $encidx=0;$encidx<=$cmdlength;$encidx+=8) {
3318: $encqresult.= unpack("H16",
3319: $cipher->encrypt(substr($qresult,
3320: $encidx,
3321: 8)));
3322: }
3323: &Reply( $client, "enc:$cmdlength:$encqresult\n", $userinput);
3324: } else {
1.231 foxr 3325: &Failure( $client, "error:no_key\n", $userinput);
3326: }
3327: } else {
1.255 foxr 3328: &Failure($client, "$qresult while attempting eget\n", $userinput);
3329:
1.231 foxr 3330: }
3331:
3332: return 1;
3333: }
1.255 foxr 3334: ®ister_handler("eget", \&get_profile_entry_encrypted, 0, 1, 0);
1.263 albertel 3335:
1.231 foxr 3336: #
3337: # Deletes a key in a user profile database.
3338: #
3339: # Parameters:
3340: # $cmd - Command keyword (del).
3341: # $tail - Command tail. IN this case a colon
3342: # separated list containing:
3343: # The domain and user that identifies uniquely
3344: # the identity of the user.
3345: # The profile namespace (name of the profile
3346: # database file).
3347: # & separated list of keywords to delete.
3348: # $client - File open on client socket.
3349: # Returns:
3350: # 1 - Continue processing
3351: # 0 - Exit server.
3352: #
3353: #
3354: sub delete_profile_entry {
3355: my ($cmd, $tail, $client) = @_;
3356:
3357: my $userinput = "cmd:$tail";
3358:
3359: my ($udom,$uname,$namespace,$what) = split(/:/,$tail);
3360: chomp($what);
3361: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3362: &GDBM_WRCREAT(),
3363: "D",$what);
3364: if ($hashref) {
3365: my @keys=split(/\&/,$what);
3366: foreach my $key (@keys) {
3367: delete($hashref->{$key});
3368: }
1.315 albertel 3369: if (&untie_user_hash($hashref)) {
1.231 foxr 3370: &Reply($client, "ok\n", $userinput);
3371: } else {
3372: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
3373: "while attempting del\n", $userinput);
3374: }
3375: } else {
3376: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
3377: "while attempting del\n", $userinput);
3378: }
3379: return 1;
3380: }
3381: ®ister_handler("del", \&delete_profile_entry, 0, 1, 0);
1.263 albertel 3382:
1.231 foxr 3383: #
3384: # List the set of keys that are defined in a profile database file.
3385: # A successful reply from this will contain an & separated list of
3386: # the keys.
3387: # Parameters:
3388: # $cmd - Command request (keys).
3389: # $tail - Remainder of the request, a colon separated
3390: # list containing domain/user that identifies the
3391: # user being queried, and the database namespace
3392: # (database filename essentially).
3393: # $client - File open on the client.
3394: # Returns:
3395: # 1 - Continue processing.
3396: # 0 - Exit the server.
3397: #
3398: sub get_profile_keys {
3399: my ($cmd, $tail, $client) = @_;
3400:
3401: my $userinput = "$cmd:$tail";
3402:
3403: my ($udom,$uname,$namespace)=split(/:/,$tail);
3404: my $qresult='';
3405: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3406: &GDBM_READER());
3407: if ($hashref) {
3408: foreach my $key (keys %$hashref) {
3409: $qresult.="$key&";
3410: }
1.315 albertel 3411: if (&untie_user_hash($hashref)) {
1.231 foxr 3412: $qresult=~s/\&$//;
1.387 albertel 3413: &Reply($client, \$qresult, $userinput);
1.231 foxr 3414: } else {
3415: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
3416: "while attempting keys\n", $userinput);
3417: }
3418: } else {
3419: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
3420: "while attempting keys\n", $userinput);
3421: }
3422:
3423: return 1;
3424: }
3425: ®ister_handler("keys", \&get_profile_keys, 0, 1, 0);
3426:
3427: #
3428: # Dump the contents of a user profile database.
3429: # Note that this constitutes a very large covert channel too since
3430: # the dump will return sensitive information that is not encrypted.
3431: # The naive security assumption is that the session negotiation ensures
3432: # our client is trusted and I don't believe that's assured at present.
3433: # Sure want badly to go to ssl or tls. Of course if my peer isn't really
3434: # a LonCAPA node they could have negotiated an encryption key too so >sigh<.
3435: #
3436: # Parameters:
3437: # $cmd - The command request keyword (currentdump).
3438: # $tail - Remainder of the request, consisting of a colon
3439: # separated list that has the domain/username and
3440: # the namespace to dump (database file).
3441: # $client - file open on the remote client.
3442: # Returns:
3443: # 1 - Continue processing.
3444: # 0 - Exit the server.
3445: #
3446: sub dump_profile_database {
3447: my ($cmd, $tail, $client) = @_;
3448:
3449: my $userinput = "$cmd:$tail";
3450:
3451: my ($udom,$uname,$namespace) = split(/:/,$tail);
3452: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3453: &GDBM_READER());
3454: if ($hashref) {
3455: # Structure of %data:
3456: # $data{$symb}->{$parameter}=$value;
3457: # $data{$symb}->{'v.'.$parameter}=$version;
3458: # since $parameter will be unescaped, we do not
3459: # have to worry about silly parameter names...
3460:
3461: my $qresult='';
3462: my %data = (); # A hash of anonymous hashes..
3463: while (my ($key,$value) = each(%$hashref)) {
3464: my ($v,$symb,$param) = split(/:/,$key);
3465: next if ($v eq 'version' || $symb eq 'keys');
3466: next if (exists($data{$symb}) &&
3467: exists($data{$symb}->{$param}) &&
3468: $data{$symb}->{'v.'.$param} > $v);
3469: $data{$symb}->{$param}=$value;
3470: $data{$symb}->{'v.'.$param}=$v;
3471: }
1.311 albertel 3472: if (&untie_user_hash($hashref)) {
1.231 foxr 3473: while (my ($symb,$param_hash) = each(%data)) {
3474: while(my ($param,$value) = each (%$param_hash)){
3475: next if ($param =~ /^v\./); # Ignore versions...
3476: #
3477: # Just dump the symb=value pairs separated by &
3478: #
3479: $qresult.=$symb.':'.$param.'='.$value.'&';
3480: }
3481: }
3482: chop($qresult);
1.387 albertel 3483: &Reply($client , \$qresult, $userinput);
1.231 foxr 3484: } else {
3485: &Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ".
3486: "while attempting currentdump\n", $userinput);
3487: }
3488: } else {
3489: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
3490: "while attempting currentdump\n", $userinput);
3491: }
3492:
3493: return 1;
3494: }
3495: ®ister_handler("currentdump", \&dump_profile_database, 0, 1, 0);
3496:
3497: #
3498: # Dump a profile database with an optional regular expression
3499: # to match against the keys. In this dump, no effort is made
3500: # to separate symb from version information. Presumably the
3501: # databases that are dumped by this command are of a different
3502: # structure. Need to look at this and improve the documentation of
3503: # both this and the currentdump handler.
3504: # Parameters:
3505: # $cmd - The command keyword.
3506: # $tail - All of the characters after the $cmd:
3507: # These are expected to be a colon
3508: # separated list containing:
3509: # domain/user - identifying the user.
3510: # namespace - identifying the database.
3511: # regexp - optional regular expression
3512: # that is matched against
3513: # database keywords to do
3514: # selective dumps.
1.488 raeburn 3515: # range - optional range of entries
3516: # e.g., 10-20 would return the
3517: # 10th to 19th items, etc.
1.231 foxr 3518: # $client - Channel open on the client.
3519: # Returns:
3520: # 1 - Continue processing.
3521: # Side effects:
3522: # response is written to $client.
3523: #
3524: sub dump_with_regexp {
3525: my ($cmd, $tail, $client) = @_;
3526:
1.489.2.4 raeburn 3527: my $res = LONCAPA::Lond::dump_with_regexp($tail, $clientversion);
1.231 foxr 3528:
1.489.2.4 raeburn 3529: if ($res =~ /^error:/) {
3530: &Failure($client, \$res, "$cmd:$tail");
1.231 foxr 3531: } else {
1.489.2.4 raeburn 3532: &Reply($client, \$res, "$cmd:$tail");
1.231 foxr 3533: }
3534:
3535: return 1;
3536: }
3537: ®ister_handler("dump", \&dump_with_regexp, 0, 1, 0);
3538:
1.489.2.43.2. (raeburn 3539:): #
3540:): # Process the encrypted dump request. Original call should
3541:): # be from lonnet::dump() with seventh arg ($encrypt) set to
3542:): # 1, to ensure that both request and response are encrypted.
3543:): #
3544:): # Parameters:
3545:): # $cmd - Command keyword of request (edump).
3546:): # $tail - Tail of the command.
3547:): # See &dump_with_regexp for more
3548:): # information about this.
3549:): # $client - File open on the client.
3550:): # Returns:
3551:): # 1 - Continue processing
3552:): # 0 - server should exit.
3553:): #
3554:):
3555:): sub encrypted_dump_with_regexp {
3556:): my ($cmd, $tail, $client) = @_;
3557:): my $res = LONCAPA::Lond::dump_with_regexp($tail, $clientversion);
3558:):
3559:): if ($res =~ /^error:/) {
3560:): Failure($client, \$res, "$cmd:$tail");
3561:): } else {
3562:): if ($cipher) {
3563:): my $cmdlength=length($res);
3564:): $res.=" ";
3565:): my $encres='';
3566:): for (my $encidx=0;$encidx<=$cmdlength;$encidx+=8) {
3567:): $encres.= unpack("H16",
3568:): $cipher->encrypt(substr($res,
3569:): $encidx,
3570:): 8)));
3571:): }
3572:): &Reply( $client,"enc:$cmdlength:$encres\n","$cmd:$tail");
3573:): } else {
3574:): &Failure( $client, "error:no_key\n","$cmd:$tail");
3575:): }
3576:): }
3577:): }
3578:): ®ister_handler("edump", \&encrypted_dump_with_regexp, 0, 1, 0);
3579:):
1.231 foxr 3580: # Store a set of key=value pairs associated with a versioned name.
3581: #
3582: # Parameters:
3583: # $cmd - Request command keyword.
3584: # $tail - Tail of the request. This is a colon
3585: # separated list containing:
3586: # domain/user - User and authentication domain.
3587: # namespace - Name of the database being modified
3588: # rid - Resource keyword to modify.
3589: # what - new value associated with rid.
1.489.2.17 raeburn 3590: # laststore - (optional) version=timestamp
3591: # for most recent transaction for rid
3592: # in namespace, when cstore was called
1.231 foxr 3593: #
3594: # $client - Socket open on the client.
3595: #
3596: #
3597: # Returns:
3598: # 1 (keep on processing).
3599: # Side-Effects:
3600: # Writes to the client
1.489.2.17 raeburn 3601: # Successful storage will cause either 'ok', or, if $laststore was included
3602: # in the tail of the request, and the version number for the last transaction
3603: # is larger than the version in $laststore, delay:$numtrans , where $numtrans
3604: # is the number of store evevnts recorded for rid in namespace since
3605: # lonnet::store() was called by the client.
3606: #
1.231 foxr 3607: sub store_handler {
3608: my ($cmd, $tail, $client) = @_;
3609:
3610: my $userinput = "$cmd:$tail";
3611:
1.489.2.17 raeburn 3612: chomp($tail);
3613: my ($udom,$uname,$namespace,$rid,$what,$laststore) =split(/:/,$tail);
1.231 foxr 3614: if ($namespace ne 'roles') {
3615:
3616: my @pairs=split(/\&/,$what);
3617: my $hashref = &tie_user_hash($udom, $uname, $namespace,
1.268 albertel 3618: &GDBM_WRCREAT(), "S",
1.231 foxr 3619: "$rid:$what");
3620: if ($hashref) {
3621: my $now = time;
1.489.2.17 raeburn 3622: my $numtrans;
3623: if ($laststore) {
3624: my ($previousversion,$previoustime) = split(/\=/,$laststore);
3625: my ($lastversion,$lasttime) = (0,0);
3626: $lastversion = $hashref->{"version:$rid"};
3627: if ($lastversion) {
3628: $lasttime = $hashref->{"$lastversion:$rid:timestamp"};
3629: }
3630: if (($previousversion) && ($previousversion !~ /\D/)) {
3631: if (($lastversion > $previousversion) && ($lasttime >= $previoustime)) {
3632: $numtrans = $lastversion - $previousversion;
3633: }
3634: } elsif ($lastversion) {
3635: $numtrans = $lastversion;
3636: }
3637: if ($numtrans) {
3638: $numtrans =~ s/D//g;
3639: }
3640: }
3641:
1.231 foxr 3642: $hashref->{"version:$rid"}++;
3643: my $version=$hashref->{"version:$rid"};
3644: my $allkeys='';
3645: foreach my $pair (@pairs) {
3646: my ($key,$value)=split(/=/,$pair);
3647: $allkeys.=$key.':';
3648: $hashref->{"$version:$rid:$key"}=$value;
3649: }
3650: $hashref->{"$version:$rid:timestamp"}=$now;
3651: $allkeys.='timestamp';
3652: $hashref->{"$version:keys:$rid"}=$allkeys;
1.311 albertel 3653: if (&untie_user_hash($hashref)) {
1.489.2.17 raeburn 3654: my $msg = 'ok';
3655: if ($numtrans) {
3656: $msg = 'delay:'.$numtrans;
3657: }
3658: &Reply($client, "$msg\n", $userinput);
1.231 foxr 3659: } else {
3660: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
3661: "while attempting store\n", $userinput);
3662: }
3663: } else {
3664: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
3665: "while attempting store\n", $userinput);
3666: }
3667: } else {
3668: &Failure($client, "refused\n", $userinput);
3669: }
3670:
3671: return 1;
3672: }
3673: ®ister_handler("store", \&store_handler, 0, 1, 0);
1.263 albertel 3674:
1.323 albertel 3675: # Modify a set of key=value pairs associated with a versioned name.
3676: #
3677: # Parameters:
3678: # $cmd - Request command keyword.
3679: # $tail - Tail of the request. This is a colon
3680: # separated list containing:
3681: # domain/user - User and authentication domain.
3682: # namespace - Name of the database being modified
3683: # rid - Resource keyword to modify.
3684: # v - Version item to modify
3685: # what - new value associated with rid.
3686: #
3687: # $client - Socket open on the client.
3688: #
3689: #
3690: # Returns:
3691: # 1 (keep on processing).
3692: # Side-Effects:
3693: # Writes to the client
3694: sub putstore_handler {
3695: my ($cmd, $tail, $client) = @_;
3696:
3697: my $userinput = "$cmd:$tail";
3698:
3699: my ($udom,$uname,$namespace,$rid,$v,$what) =split(/:/,$tail);
3700: if ($namespace ne 'roles') {
3701:
3702: chomp($what);
3703: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3704: &GDBM_WRCREAT(), "M",
3705: "$rid:$v:$what");
3706: if ($hashref) {
3707: my $now = time;
3708: my %data = &hash_extract($what);
3709: my @allkeys;
3710: while (my($key,$value) = each(%data)) {
3711: push(@allkeys,$key);
3712: $hashref->{"$v:$rid:$key"} = $value;
3713: }
3714: my $allkeys = join(':',@allkeys);
3715: $hashref->{"$v:keys:$rid"}=$allkeys;
3716:
3717: if (&untie_user_hash($hashref)) {
3718: &Reply($client, "ok\n", $userinput);
3719: } else {
3720: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
3721: "while attempting store\n", $userinput);
3722: }
3723: } else {
3724: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
3725: "while attempting store\n", $userinput);
3726: }
3727: } else {
3728: &Failure($client, "refused\n", $userinput);
3729: }
3730:
3731: return 1;
3732: }
3733: ®ister_handler("putstore", \&putstore_handler, 0, 1, 0);
3734:
3735: sub hash_extract {
3736: my ($str)=@_;
3737: my %hash;
3738: foreach my $pair (split(/\&/,$str)) {
3739: my ($key,$value)=split(/=/,$pair);
3740: $hash{$key}=$value;
3741: }
3742: return (%hash);
3743: }
3744: sub hash_to_str {
3745: my ($hash_ref)=@_;
3746: my $str;
3747: foreach my $key (keys(%$hash_ref)) {
3748: $str.=$key.'='.$hash_ref->{$key}.'&';
3749: }
3750: $str=~s/\&$//;
3751: return $str;
3752: }
3753:
1.231 foxr 3754: #
3755: # Dump out all versions of a resource that has key=value pairs associated
3756: # with it for each version. These resources are built up via the store
3757: # command.
3758: #
3759: # Parameters:
3760: # $cmd - Command keyword.
3761: # $tail - Remainder of the request which consists of:
3762: # domain/user - User and auth. domain.
3763: # namespace - name of resource database.
3764: # rid - Resource id.
3765: # $client - socket open on the client.
3766: #
3767: # Returns:
3768: # 1 indicating the caller should not yet exit.
3769: # Side-effects:
3770: # Writes a reply to the client.
3771: # The reply is a string of the following shape:
3772: # version=current&version:keys=k1:k2...&1:k1=v1&1:k2=v2...
3773: # Where the 1 above represents version 1.
3774: # this continues for all pairs of keys in all versions.
3775: #
3776: #
3777: #
3778: #
3779: sub restore_handler {
3780: my ($cmd, $tail, $client) = @_;
3781:
3782: my $userinput = "$cmd:$tail"; # Only used for logging purposes.
1.351 banghart 3783: my ($udom,$uname,$namespace,$rid) = split(/:/,$tail);
1.352 albertel 3784: $namespace=~s/\//\_/g;
1.350 albertel 3785: $namespace = &LONCAPA::clean_username($namespace);
1.349 albertel 3786:
1.231 foxr 3787: chomp($rid);
3788: my $qresult='';
1.309 albertel 3789: my $hashref = &tie_user_hash($udom, $uname, $namespace, &GDBM_READER());
3790: if ($hashref) {
3791: my $version=$hashref->{"version:$rid"};
1.231 foxr 3792: $qresult.="version=$version&";
3793: my $scope;
3794: for ($scope=1;$scope<=$version;$scope++) {
1.309 albertel 3795: my $vkeys=$hashref->{"$scope:keys:$rid"};
1.231 foxr 3796: my @keys=split(/:/,$vkeys);
3797: my $key;
3798: $qresult.="$scope:keys=$vkeys&";
3799: foreach $key (@keys) {
1.309 albertel 3800: $qresult.="$scope:$key=".$hashref->{"$scope:$rid:$key"}."&";
1.231 foxr 3801: }
3802: }
1.311 albertel 3803: if (&untie_user_hash($hashref)) {
1.231 foxr 3804: $qresult=~s/\&$//;
1.387 albertel 3805: &Reply( $client, \$qresult, $userinput);
1.231 foxr 3806: } else {
3807: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
3808: "while attempting restore\n", $userinput);
3809: }
3810: } else {
3811: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
3812: "while attempting restore\n", $userinput);
3813: }
3814:
3815: return 1;
3816:
3817:
3818: }
3819: ®ister_handler("restore", \&restore_handler, 0,1,0);
1.234 foxr 3820:
3821: #
1.324 raeburn 3822: # Add a chat message to a synchronous discussion board.
1.234 foxr 3823: #
3824: # Parameters:
3825: # $cmd - Request keyword.
3826: # $tail - Tail of the command. A colon separated list
3827: # containing:
3828: # cdom - Domain on which the chat board lives
1.324 raeburn 3829: # cnum - Course containing the chat board.
3830: # newpost - Body of the posting.
3831: # group - Optional group, if chat board is only
3832: # accessible in a group within the course
1.234 foxr 3833: # $client - Socket open on the client.
3834: # Returns:
3835: # 1 - Indicating caller should keep on processing.
3836: #
3837: # Side-effects:
3838: # writes a reply to the client.
3839: #
3840: #
3841: sub send_chat_handler {
3842: my ($cmd, $tail, $client) = @_;
3843:
3844:
3845: my $userinput = "$cmd:$tail";
3846:
1.324 raeburn 3847: my ($cdom,$cnum,$newpost,$group)=split(/\:/,$tail);
3848: &chat_add($cdom,$cnum,$newpost,$group);
1.234 foxr 3849: &Reply($client, "ok\n", $userinput);
3850:
3851: return 1;
3852: }
3853: ®ister_handler("chatsend", \&send_chat_handler, 0, 1, 0);
1.263 albertel 3854:
1.234 foxr 3855: #
1.324 raeburn 3856: # Retrieve the set of chat messages from a discussion board.
1.234 foxr 3857: #
3858: # Parameters:
3859: # $cmd - Command keyword that initiated the request.
3860: # $tail - Remainder of the request after the command
3861: # keyword. In this case a colon separated list of
3862: # chat domain - Which discussion board.
3863: # chat id - Discussion thread(?)
3864: # domain/user - Authentication domain and username
3865: # of the requesting person.
1.324 raeburn 3866: # group - Optional course group containing
3867: # the board.
1.234 foxr 3868: # $client - Socket open on the client program.
3869: # Returns:
3870: # 1 - continue processing
3871: # Side effects:
3872: # Response is written to the client.
3873: #
3874: sub retrieve_chat_handler {
3875: my ($cmd, $tail, $client) = @_;
3876:
3877:
3878: my $userinput = "$cmd:$tail";
3879:
1.324 raeburn 3880: my ($cdom,$cnum,$udom,$uname,$group)=split(/\:/,$tail);
1.234 foxr 3881: my $reply='';
1.324 raeburn 3882: foreach (&get_chat($cdom,$cnum,$udom,$uname,$group)) {
1.234 foxr 3883: $reply.=&escape($_).':';
3884: }
3885: $reply=~s/\:$//;
1.387 albertel 3886: &Reply($client, \$reply, $userinput);
1.234 foxr 3887:
3888:
3889: return 1;
3890: }
3891: ®ister_handler("chatretr", \&retrieve_chat_handler, 0, 1, 0);
3892:
3893: #
3894: # Initiate a query of an sql database. SQL query repsonses get put in
3895: # a file for later retrieval. This prevents sql query results from
3896: # bottlenecking the system. Note that with loncnew, perhaps this is
3897: # less of an issue since multiple outstanding requests can be concurrently
3898: # serviced.
3899: #
3900: # Parameters:
3901: # $cmd - COmmand keyword that initiated the request.
3902: # $tail - Remainder of the command after the keyword.
3903: # For this function, this consists of a query and
3904: # 3 arguments that are self-documentingly labelled
3905: # in the original arg1, arg2, arg3.
3906: # $client - Socket open on the client.
3907: # Return:
3908: # 1 - Indicating processing should continue.
3909: # Side-effects:
3910: # a reply is written to $client.
3911: #
3912: sub send_query_handler {
3913: my ($cmd, $tail, $client) = @_;
3914:
3915:
3916: my $userinput = "$cmd:$tail";
3917:
3918: my ($query,$arg1,$arg2,$arg3)=split(/\:/,$tail);
3919: $query=~s/\n*$//g;
1.489.2.27 raeburn 3920: if (($query eq 'usersearch') || ($query eq 'instdirsearch')) {
3921: my $usersearchconf = &get_usersearch_config($currentdomainid,'directorysrch');
3922: my $earlyout;
3923: if (ref($usersearchconf) eq 'HASH') {
3924: if ($currentdomainid eq $clienthomedom) {
3925: if ($query eq 'usersearch') {
3926: if ($usersearchconf->{'lcavailable'} eq '0') {
3927: $earlyout = 1;
3928: }
3929: } else {
3930: if ($usersearchconf->{'available'} eq '0') {
3931: $earlyout = 1;
3932: }
3933: }
3934: } else {
3935: if ($query eq 'usersearch') {
3936: if ($usersearchconf->{'lclocalonly'}) {
3937: $earlyout = 1;
3938: }
3939: } else {
3940: if ($usersearchconf->{'localonly'}) {
3941: $earlyout = 1;
3942: }
3943: }
3944: }
3945: }
3946: if ($earlyout) {
3947: &Reply($client, "query_not_authorized\n");
3948: return 1;
3949: }
3950: }
1.234 foxr 3951: &Reply($client, "". &sql_reply("$clientname\&$query".
3952: "\&$arg1"."\&$arg2"."\&$arg3")."\n",
3953: $userinput);
3954:
3955: return 1;
3956: }
3957: ®ister_handler("querysend", \&send_query_handler, 0, 1, 0);
3958:
3959: #
3960: # Add a reply to an sql query. SQL queries are done asyncrhonously.
3961: # The query is submitted via a "querysend" transaction.
3962: # There it is passed on to the lonsql daemon, queued and issued to
3963: # mysql.
3964: # This transaction is invoked when the sql transaction is complete
3965: # it stores the query results in flie and indicates query completion.
3966: # presumably local software then fetches this response... I'm guessing
3967: # the sequence is: lonc does a querysend, we ask lonsql to do it.
3968: # lonsql on completion of the query interacts with the lond of our
3969: # client to do a query reply storing two files:
3970: # - id - The results of the query.
3971: # - id.end - Indicating the transaction completed.
3972: # NOTE: id is a unique id assigned to the query and querysend time.
3973: # Parameters:
3974: # $cmd - Command keyword that initiated this request.
3975: # $tail - Remainder of the tail. In this case that's a colon
3976: # separated list containing the query Id and the
3977: # results of the query.
3978: # $client - Socket open on the client.
3979: # Return:
3980: # 1 - Indicating that we should continue processing.
3981: # Side effects:
3982: # ok written to the client.
3983: #
3984: sub reply_query_handler {
3985: my ($cmd, $tail, $client) = @_;
3986:
3987:
3988: my $userinput = "$cmd:$tail";
3989:
1.339 albertel 3990: my ($id,$reply)=split(/:/,$tail);
1.234 foxr 3991: my $store;
3992: my $execdir=$perlvar{'lonDaemons'};
3993: if ($store=IO::File->new(">$execdir/tmp/$id")) {
3994: $reply=~s/\&/\n/g;
3995: print $store $reply;
3996: close $store;
3997: my $store2=IO::File->new(">$execdir/tmp/$id.end");
3998: print $store2 "done\n";
3999: close $store2;
4000: &Reply($client, "ok\n", $userinput);
4001: } else {
4002: &Failure($client, "error: ".($!+0)
4003: ." IO::File->new Failed ".
4004: "while attempting queryreply\n", $userinput);
4005: }
4006:
4007:
4008: return 1;
4009: }
4010: ®ister_handler("queryreply", \&reply_query_handler, 0, 1, 0);
4011:
4012: #
4013: # Process the courseidput request. Not quite sure what this means
4014: # at the system level sense. It appears a gdbm file in the
4015: # /home/httpd/lonUsers/$domain/nohist_courseids is tied and
4016: # a set of entries made in that database.
4017: #
4018: # Parameters:
4019: # $cmd - The command keyword that initiated this request.
4020: # $tail - Tail of the command. In this case consists of a colon
4021: # separated list contaning the domain to apply this to and
4022: # an ampersand separated list of keyword=value pairs.
1.272 raeburn 4023: # Each value is a colon separated list that includes:
4024: # description, institutional code and course owner.
4025: # For backward compatibility with versions included
4026: # in LON-CAPA 1.1.X (and earlier) and 1.2.X, institutional
4027: # code and/or course owner are preserved from the existing
4028: # record when writing a new record in response to 1.1 or
4029: # 1.2 implementations of lonnet::flushcourselogs().
4030: #
1.234 foxr 4031: # $client - Socket open on the client.
4032: # Returns:
4033: # 1 - indicating that processing should continue
4034: #
4035: # Side effects:
4036: # reply is written to the client.
4037: #
4038: sub put_course_id_handler {
4039: my ($cmd, $tail, $client) = @_;
4040:
4041:
4042: my $userinput = "$cmd:$tail";
4043:
1.266 raeburn 4044: my ($udom, $what) = split(/:/, $tail,2);
1.234 foxr 4045: chomp($what);
4046: my $now=time;
4047: my @pairs=split(/\&/,$what);
4048:
4049: my $hashref = &tie_domain_hash($udom, "nohist_courseids", &GDBM_WRCREAT());
4050: if ($hashref) {
4051: foreach my $pair (@pairs) {
1.271 raeburn 4052: my ($key,$courseinfo) = split(/=/,$pair,2);
4053: $courseinfo =~ s/=/:/g;
1.384 raeburn 4054: if (defined($hashref->{$key})) {
4055: my $value = &Apache::lonnet::thaw_unescape($hashref->{$key});
4056: if (ref($value) eq 'HASH') {
4057: my @items = ('description','inst_code','owner','type');
4058: my @new_items = split(/:/,$courseinfo,-1);
4059: my %storehash;
4060: for (my $i=0; $i<@new_items; $i++) {
1.391 raeburn 4061: $storehash{$items[$i]} = &unescape($new_items[$i]);
1.384 raeburn 4062: }
4063: $hashref->{$key} =
4064: &Apache::lonnet::freeze_escape(\%storehash);
4065: my $unesc_key = &unescape($key);
4066: $hashref->{&escape('lasttime:'.$unesc_key)} = $now;
4067: next;
1.383 raeburn 4068: }
1.384 raeburn 4069: }
4070: my @current_items = split(/:/,$hashref->{$key},-1);
4071: shift(@current_items); # remove description
4072: pop(@current_items); # remove last access
4073: my $numcurrent = scalar(@current_items);
4074: if ($numcurrent > 3) {
4075: $numcurrent = 3;
4076: }
4077: my @new_items = split(/:/,$courseinfo,-1);
4078: my $numnew = scalar(@new_items);
4079: if ($numcurrent > 0) {
4080: if ($numnew <= $numcurrent) { # flushcourselogs() from pre 2.2
4081: for (my $j=$numcurrent-$numnew; $j>=0; $j--) {
4082: $courseinfo .= ':'.$current_items[$numcurrent-$j-1];
1.333 raeburn 4083: }
1.272 raeburn 4084: }
4085: }
1.384 raeburn 4086: $hashref->{$key}=$courseinfo.':'.$now;
1.234 foxr 4087: }
1.311 albertel 4088: if (&untie_domain_hash($hashref)) {
1.253 foxr 4089: &Reply( $client, "ok\n", $userinput);
1.234 foxr 4090: } else {
1.253 foxr 4091: &Failure($client, "error: ".($!+0)
1.234 foxr 4092: ." untie(GDBM) Failed ".
4093: "while attempting courseidput\n", $userinput);
4094: }
4095: } else {
1.253 foxr 4096: &Failure($client, "error: ".($!+0)
1.234 foxr 4097: ." tie(GDBM) Failed ".
4098: "while attempting courseidput\n", $userinput);
4099: }
4100:
4101: return 1;
4102: }
4103: ®ister_handler("courseidput", \&put_course_id_handler, 0, 1, 0);
4104:
1.383 raeburn 4105: sub put_course_id_hash_handler {
4106: my ($cmd, $tail, $client) = @_;
4107: my $userinput = "$cmd:$tail";
1.384 raeburn 4108: my ($udom,$mode,$what) = split(/:/, $tail,3);
1.383 raeburn 4109: chomp($what);
4110: my $now=time;
4111: my @pairs=split(/\&/,$what);
1.384 raeburn 4112: my $hashref = &tie_domain_hash($udom, "nohist_courseids", &GDBM_WRCREAT());
1.383 raeburn 4113: if ($hashref) {
4114: foreach my $pair (@pairs) {
4115: my ($key,$value)=split(/=/,$pair);
1.384 raeburn 4116: my $unesc_key = &unescape($key);
4117: if ($mode ne 'timeonly') {
4118: if (!defined($hashref->{&escape('lasttime:'.$unesc_key)})) {
4119: my $curritems = &Apache::lonnet::thaw_unescape($key);
4120: if (ref($curritems) ne 'HASH') {
4121: my @current_items = split(/:/,$hashref->{$key},-1);
4122: my $lasttime = pop(@current_items);
4123: $hashref->{&escape('lasttime:'.$unesc_key)} = $lasttime;
4124: } else {
4125: $hashref->{&escape('lasttime:'.$unesc_key)} = '';
4126: }
4127: }
4128: $hashref->{$key} = $value;
4129: }
4130: if ($mode ne 'notime') {
4131: $hashref->{&escape('lasttime:'.$unesc_key)} = $now;
4132: }
1.383 raeburn 4133: }
4134: if (&untie_domain_hash($hashref)) {
4135: &Reply($client, "ok\n", $userinput);
4136: } else {
4137: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4138: "while attempting courseidputhash\n", $userinput);
4139: }
4140: } else {
4141: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
4142: "while attempting courseidputhash\n", $userinput);
4143: }
4144: return 1;
4145: }
4146: ®ister_handler("courseidputhash", \&put_course_id_hash_handler, 0, 1, 0);
4147:
1.234 foxr 4148: # Retrieves the value of a course id resource keyword pattern
4149: # defined since a starting date. Both the starting date and the
4150: # keyword pattern are optional. If the starting date is not supplied it
4151: # is treated as the beginning of time. If the pattern is not found,
4152: # it is treatred as "." matching everything.
4153: #
4154: # Parameters:
4155: # $cmd - Command keyword that resulted in us being dispatched.
4156: # $tail - The remainder of the command that, in this case, consists
4157: # of a colon separated list of:
4158: # domain - The domain in which the course database is
4159: # defined.
4160: # since - Optional parameter describing the minimum
4161: # time of definition(?) of the resources that
4162: # will match the dump.
4163: # description - regular expression that is used to filter
4164: # the dump. Only keywords matching this regexp
4165: # will be used.
1.272 raeburn 4166: # institutional code - optional supplied code to filter
4167: # the dump. Only courses with an institutional code
4168: # that match the supplied code will be returned.
1.336 raeburn 4169: # owner - optional supplied username and domain of owner to
4170: # filter the dump. Only courses for which the course
4171: # owner matches the supplied username and/or domain
4172: # will be returned. Pre-2.2.0 legacy entries from
4173: # nohist_courseiddump will only contain usernames.
1.384 raeburn 4174: # type - optional parameter for selection
1.418 raeburn 4175: # regexp_ok - if 1 or -1 allow the supplied institutional code
4176: # filter to behave as a regular expression:
4177: # 1 will not exclude the course if the instcode matches the RE
4178: # -1 will exclude the course if the instcode matches the RE
1.384 raeburn 4179: # rtn_as_hash - whether to return the information available for
4180: # each matched item as a frozen hash of all
4181: # key, value pairs in the item's hash, or as a
4182: # colon-separated list of (in order) description,
4183: # institutional code, and course owner.
1.404 raeburn 4184: # selfenrollonly - filter by courses allowing self-enrollment
4185: # now or in the future (selfenrollonly = 1).
4186: # catfilter - filter by course category, assigned to a course
4187: # using manually defined categories (i.e., not
1.407 raeburn 4188: # self-cataloging based on on institutional code).
1.404 raeburn 4189: # showhidden - include course in results even if course
1.407 raeburn 4190: # was set to be excluded from course catalog (DC only).
1.404 raeburn 4191: # caller - if set to 'coursecatalog', courses set to be hidden
4192: # from course catalog will be excluded from results (unless
4193: # overridden by "showhidden".
1.427 raeburn 4194: # cloner - escaped username:domain of course cloner (if picking course to
1.419 raeburn 4195: # clone).
4196: # cc_clone_list - escaped comma separated list of courses for which
4197: # course cloner has active CC role (and so can clone
4198: # automatically).
1.427 raeburn 4199: # cloneonly - filter by courses for which cloner has rights to clone.
4200: # createdbefore - include courses for which creation date preceeded this date.
4201: # createdafter - include courses for which creation date followed this date.
4202: # creationcontext - include courses created in specified context
1.404 raeburn 4203: #
1.445 raeburn 4204: # domcloner - flag to indicate if user can create CCs in course's domain.
1.489.2.11 raeburn 4205: # If so, ability to clone course is automatic.
4206: # hasuniquecode - filter by courses for which a six character unique code has
4207: # been set.
1.445 raeburn 4208: #
1.234 foxr 4209: # $client - The socket open on the client.
4210: # Returns:
4211: # 1 - Continue processing.
4212: # Side Effects:
4213: # a reply is written to $client.
4214: sub dump_course_id_handler {
4215: my ($cmd, $tail, $client) = @_;
4216: my $userinput = "$cmd:$tail";
4217:
1.333 raeburn 4218: my ($udom,$since,$description,$instcodefilter,$ownerfilter,$coursefilter,
1.404 raeburn 4219: $typefilter,$regexp_ok,$rtn_as_hash,$selfenrollonly,$catfilter,$showhidden,
1.427 raeburn 4220: $caller,$cloner,$cc_clone_list,$cloneonly,$createdbefore,$createdafter,
1.489.2.11 raeburn 4221: $creationcontext,$domcloner,$hasuniquecode) =split(/:/,$tail);
1.397 raeburn 4222: my $now = time;
1.419 raeburn 4223: my ($cloneruname,$clonerudom,%cc_clone);
1.234 foxr 4224: if (defined($description)) {
4225: $description=&unescape($description);
4226: } else {
4227: $description='.';
4228: }
1.266 raeburn 4229: if (defined($instcodefilter)) {
4230: $instcodefilter=&unescape($instcodefilter);
4231: } else {
4232: $instcodefilter='.';
4233: }
1.336 raeburn 4234: my ($ownerunamefilter,$ownerdomfilter);
1.266 raeburn 4235: if (defined($ownerfilter)) {
4236: $ownerfilter=&unescape($ownerfilter);
1.336 raeburn 4237: if ($ownerfilter ne '.' && defined($ownerfilter)) {
4238: if ($ownerfilter =~ /^([^:]*):([^:]*)$/) {
4239: $ownerunamefilter = $1;
4240: $ownerdomfilter = $2;
4241: } else {
4242: $ownerunamefilter = $ownerfilter;
4243: $ownerdomfilter = '';
4244: }
4245: }
1.266 raeburn 4246: } else {
4247: $ownerfilter='.';
4248: }
1.336 raeburn 4249:
1.282 raeburn 4250: if (defined($coursefilter)) {
4251: $coursefilter=&unescape($coursefilter);
4252: } else {
4253: $coursefilter='.';
4254: }
1.333 raeburn 4255: if (defined($typefilter)) {
4256: $typefilter=&unescape($typefilter);
4257: } else {
4258: $typefilter='.';
4259: }
1.344 raeburn 4260: if (defined($regexp_ok)) {
4261: $regexp_ok=&unescape($regexp_ok);
4262: }
1.401 raeburn 4263: if (defined($catfilter)) {
4264: $catfilter=&unescape($catfilter);
4265: }
1.419 raeburn 4266: if (defined($cloner)) {
4267: $cloner = &unescape($cloner);
4268: ($cloneruname,$clonerudom) = ($cloner =~ /^($LONCAPA::match_username):($LONCAPA::match_domain)$/);
4269: }
4270: if (defined($cc_clone_list)) {
4271: $cc_clone_list = &unescape($cc_clone_list);
4272: my @cc_cloners = split('&',$cc_clone_list);
4273: foreach my $cid (@cc_cloners) {
4274: my ($clonedom,$clonenum) = split(':',$cid);
4275: next if ($clonedom ne $udom);
4276: $cc_clone{$clonedom.'_'.$clonenum} = 1;
4277: }
4278: }
1.431 raeburn 4279: if ($createdbefore ne '') {
1.427 raeburn 4280: $createdbefore = &unescape($createdbefore);
4281: } else {
4282: $createdbefore = 0;
4283: }
1.431 raeburn 4284: if ($createdafter ne '') {
1.427 raeburn 4285: $createdafter = &unescape($createdafter);
4286: } else {
4287: $createdafter = 0;
4288: }
1.431 raeburn 4289: if ($creationcontext ne '') {
1.427 raeburn 4290: $creationcontext = &unescape($creationcontext);
4291: } else {
4292: $creationcontext = '.';
4293: }
1.489.2.11 raeburn 4294: unless ($hasuniquecode) {
4295: $hasuniquecode = '.';
4296: }
1.384 raeburn 4297: my $unpack = 1;
1.485 raeburn 4298: if ($description eq '.' && $instcodefilter eq '.' && $ownerfilter eq '.' &&
1.384 raeburn 4299: $typefilter eq '.') {
4300: $unpack = 0;
4301: }
4302: if (!defined($since)) { $since=0; }
1.234 foxr 4303: my $qresult='';
4304: my $hashref = &tie_domain_hash($udom, "nohist_courseids", &GDBM_WRCREAT());
4305: if ($hashref) {
1.384 raeburn 4306: while (my ($key,$value) = each(%$hashref)) {
1.397 raeburn 4307: my ($unesc_key,$lasttime_key,$lasttime,$is_hash,%val,
1.427 raeburn 4308: %unesc_val,$selfenroll_end,$selfenroll_types,$created,
4309: $context);
1.384 raeburn 4310: $unesc_key = &unescape($key);
4311: if ($unesc_key =~ /^lasttime:/) {
4312: next;
4313: } else {
4314: $lasttime_key = &escape('lasttime:'.$unesc_key);
4315: }
4316: if ($hashref->{$lasttime_key} ne '') {
4317: $lasttime = $hashref->{$lasttime_key};
4318: next if ($lasttime<$since);
4319: }
1.419 raeburn 4320: my ($canclone,$valchange);
1.384 raeburn 4321: my $items = &Apache::lonnet::thaw_unescape($value);
4322: if (ref($items) eq 'HASH') {
1.429 raeburn 4323: if ($hashref->{$lasttime_key} eq '') {
1.430 raeburn 4324: next if ($since > 1);
1.429 raeburn 4325: }
1.384 raeburn 4326: $is_hash = 1;
1.445 raeburn 4327: if ($domcloner) {
4328: $canclone = 1;
4329: } elsif (defined($clonerudom)) {
1.419 raeburn 4330: if ($items->{'cloners'}) {
4331: my @cloneable = split(',',$items->{'cloners'});
4332: if (@cloneable) {
4333: if (grep(/^\*$/,@cloneable)) {
4334: $canclone = 1;
4335: } elsif (grep(/^\*:\Q$clonerudom\E$/,@cloneable)) {
4336: $canclone = 1;
4337: } elsif (grep(/^\Q$cloneruname\E:\Q$clonerudom\E$/,@cloneable)) {
4338: $canclone = 1;
4339: }
4340: }
4341: unless ($canclone) {
4342: if ($cloneruname ne '' && $clonerudom ne '') {
4343: if ($cc_clone{$unesc_key}) {
4344: $canclone = 1;
4345: $items->{'cloners'} .= ','.$cloneruname.':'.
4346: $clonerudom;
4347: $valchange = 1;
4348: }
4349: }
4350: }
4351: } elsif (defined($cloneruname)) {
4352: if ($cc_clone{$unesc_key}) {
4353: $canclone = 1;
4354: $items->{'cloners'} = $cloneruname.':'.$clonerudom;
4355: $valchange = 1;
4356: }
1.437 raeburn 4357: unless ($canclone) {
4358: if ($items->{'owner'} =~ /:/) {
4359: if ($items->{'owner'} eq $cloner) {
4360: $canclone = 1;
4361: }
1.444 raeburn 4362: } elsif ($cloner eq $items->{'owner'}.':'.$udom) {
1.437 raeburn 4363: $canclone = 1;
4364: }
4365: if ($canclone) {
4366: $items->{'cloners'} = $cloneruname.':'.$clonerudom;
4367: $valchange = 1;
4368: }
4369: }
1.419 raeburn 4370: }
4371: }
1.384 raeburn 4372: if ($unpack || !$rtn_as_hash) {
4373: $unesc_val{'descr'} = $items->{'description'};
4374: $unesc_val{'inst_code'} = $items->{'inst_code'};
4375: $unesc_val{'owner'} = $items->{'owner'};
4376: $unesc_val{'type'} = $items->{'type'};
1.419 raeburn 4377: $unesc_val{'cloners'} = $items->{'cloners'};
1.427 raeburn 4378: $unesc_val{'created'} = $items->{'created'};
4379: $unesc_val{'context'} = $items->{'context'};
1.404 raeburn 4380: }
4381: $selfenroll_types = $items->{'selfenroll_types'};
4382: $selfenroll_end = $items->{'selfenroll_end_date'};
1.427 raeburn 4383: $created = $items->{'created'};
4384: $context = $items->{'context'};
1.489.2.11 raeburn 4385: if ($hasuniquecode ne '.') {
4386: next unless ($items->{'uniquecode'});
4387: }
1.404 raeburn 4388: if ($selfenrollonly) {
4389: next if (!$selfenroll_types);
4390: if (($selfenroll_end > 0) && ($selfenroll_end <= $now)) {
4391: next;
1.397 raeburn 4392: }
1.404 raeburn 4393: }
1.427 raeburn 4394: if ($creationcontext ne '.') {
4395: next if (($context ne '') && ($context ne $creationcontext));
4396: }
4397: if ($createdbefore > 0) {
4398: next if (($created eq '') || ($created > $createdbefore));
4399: }
4400: if ($createdafter > 0) {
4401: next if (($created eq '') || ($created <= $createdafter));
4402: }
1.404 raeburn 4403: if ($catfilter ne '') {
1.406 raeburn 4404: next if ($items->{'categories'} eq '');
4405: my @categories = split('&',$items->{'categories'});
1.407 raeburn 4406: next if (@categories == 0);
4407: my @subcats = split('&',$catfilter);
4408: my $matchcat = 0;
4409: foreach my $cat (@categories) {
4410: if (grep(/^\Q$cat\E$/,@subcats)) {
4411: $matchcat = 1;
4412: last;
4413: }
4414: }
4415: next if (!$matchcat);
1.404 raeburn 4416: }
4417: if ($caller eq 'coursecatalog') {
1.405 raeburn 4418: if ($items->{'hidefromcat'} eq 'yes') {
4419: next if !$showhidden;
1.401 raeburn 4420: }
1.384 raeburn 4421: }
1.383 raeburn 4422: } else {
1.401 raeburn 4423: next if ($catfilter ne '');
1.419 raeburn 4424: next if ($selfenrollonly);
1.427 raeburn 4425: next if ($createdbefore || $createdafter);
4426: next if ($creationcontext ne '.');
1.419 raeburn 4427: if ((defined($clonerudom)) && (defined($cloneruname))) {
4428: if ($cc_clone{$unesc_key}) {
4429: $canclone = 1;
4430: $val{'cloners'} = &escape($cloneruname.':'.$clonerudom);
4431: }
4432: }
1.384 raeburn 4433: $is_hash = 0;
1.388 raeburn 4434: my @courseitems = split(/:/,$value);
1.403 raeburn 4435: $lasttime = pop(@courseitems);
1.402 raeburn 4436: if ($hashref->{$lasttime_key} eq '') {
4437: next if ($lasttime<$since);
4438: }
1.384 raeburn 4439: ($val{'descr'},$val{'inst_code'},$val{'owner'},$val{'type'}) = @courseitems;
1.383 raeburn 4440: }
1.419 raeburn 4441: if ($cloneonly) {
4442: next unless ($canclone);
4443: }
1.266 raeburn 4444: my $match = 1;
1.384 raeburn 4445: if ($description ne '.') {
4446: if (!$is_hash) {
4447: $unesc_val{'descr'} = &unescape($val{'descr'});
4448: }
4449: if (eval{$unesc_val{'descr'} !~ /\Q$description\E/i}) {
1.266 raeburn 4450: $match = 0;
1.384 raeburn 4451: }
1.266 raeburn 4452: }
1.384 raeburn 4453: if ($instcodefilter ne '.') {
4454: if (!$is_hash) {
4455: $unesc_val{'inst_code'} = &unescape($val{'inst_code'});
4456: }
1.418 raeburn 4457: if ($regexp_ok == 1) {
1.384 raeburn 4458: if (eval{$unesc_val{'inst_code'} !~ /$instcodefilter/}) {
1.344 raeburn 4459: $match = 0;
4460: }
1.418 raeburn 4461: } elsif ($regexp_ok == -1) {
4462: if (eval{$unesc_val{'inst_code'} =~ /$instcodefilter/}) {
4463: $match = 0;
4464: }
1.344 raeburn 4465: } else {
1.384 raeburn 4466: if (eval{$unesc_val{'inst_code'} !~ /\Q$instcodefilter\E/i}) {
1.344 raeburn 4467: $match = 0;
4468: }
1.266 raeburn 4469: }
1.234 foxr 4470: }
1.384 raeburn 4471: if ($ownerfilter ne '.') {
4472: if (!$is_hash) {
4473: $unesc_val{'owner'} = &unescape($val{'owner'});
4474: }
1.336 raeburn 4475: if (($ownerunamefilter ne '') && ($ownerdomfilter ne '')) {
1.384 raeburn 4476: if ($unesc_val{'owner'} =~ /:/) {
4477: if (eval{$unesc_val{'owner'} !~
4478: /\Q$ownerunamefilter\E:\Q$ownerdomfilter\E$/i}) {
1.336 raeburn 4479: $match = 0;
4480: }
4481: } else {
1.384 raeburn 4482: if (eval{$unesc_val{'owner'} !~ /\Q$ownerunamefilter\E/i}) {
1.336 raeburn 4483: $match = 0;
4484: }
4485: }
4486: } elsif ($ownerunamefilter ne '') {
1.384 raeburn 4487: if ($unesc_val{'owner'} =~ /:/) {
4488: if (eval{$unesc_val{'owner'} !~ /\Q$ownerunamefilter\E:[^:]+$/i}) {
1.336 raeburn 4489: $match = 0;
4490: }
4491: } else {
1.384 raeburn 4492: if (eval{$unesc_val{'owner'} !~ /\Q$ownerunamefilter\E/i}) {
1.336 raeburn 4493: $match = 0;
4494: }
4495: }
4496: } elsif ($ownerdomfilter ne '') {
1.384 raeburn 4497: if ($unesc_val{'owner'} =~ /:/) {
4498: if (eval{$unesc_val{'owner'} !~ /^[^:]+:\Q$ownerdomfilter\E/}) {
1.336 raeburn 4499: $match = 0;
4500: }
4501: } else {
4502: if ($ownerdomfilter ne $udom) {
4503: $match = 0;
4504: }
4505: }
1.266 raeburn 4506: }
4507: }
1.384 raeburn 4508: if ($coursefilter ne '.') {
4509: if (eval{$unesc_key !~ /^$udom(_)\Q$coursefilter\E$/}) {
1.282 raeburn 4510: $match = 0;
4511: }
4512: }
1.384 raeburn 4513: if ($typefilter ne '.') {
4514: if (!$is_hash) {
4515: $unesc_val{'type'} = &unescape($val{'type'});
4516: }
4517: if ($unesc_val{'type'} eq '') {
1.333 raeburn 4518: if ($typefilter ne 'Course') {
4519: $match = 0;
4520: }
1.383 raeburn 4521: } else {
1.384 raeburn 4522: if (eval{$unesc_val{'type'} !~ /^\Q$typefilter\E$/}) {
1.333 raeburn 4523: $match = 0;
4524: }
4525: }
4526: }
1.266 raeburn 4527: if ($match == 1) {
1.384 raeburn 4528: if ($rtn_as_hash) {
4529: if ($is_hash) {
1.419 raeburn 4530: if ($valchange) {
4531: my $newvalue = &Apache::lonnet::freeze_escape($items);
4532: $qresult.=$key.'='.$newvalue.'&';
4533: } else {
4534: $qresult.=$key.'='.$value.'&';
4535: }
1.384 raeburn 4536: } else {
1.388 raeburn 4537: my %rtnhash = ( 'description' => &unescape($val{'descr'}),
4538: 'inst_code' => &unescape($val{'inst_code'}),
4539: 'owner' => &unescape($val{'owner'}),
4540: 'type' => &unescape($val{'type'}),
1.419 raeburn 4541: 'cloners' => &unescape($val{'cloners'}),
1.384 raeburn 4542: );
4543: my $items = &Apache::lonnet::freeze_escape(\%rtnhash);
4544: $qresult.=$key.'='.$items.'&';
4545: }
1.383 raeburn 4546: } else {
1.384 raeburn 4547: if ($is_hash) {
4548: $qresult .= $key.'='.&escape($unesc_val{'descr'}).':'.
4549: &escape($unesc_val{'inst_code'}).':'.
4550: &escape($unesc_val{'owner'}).'&';
4551: } else {
4552: $qresult .= $key.'='.$val{'descr'}.':'.$val{'inst_code'}.
4553: ':'.$val{'owner'}.'&';
4554: }
1.383 raeburn 4555: }
1.266 raeburn 4556: }
1.234 foxr 4557: }
1.311 albertel 4558: if (&untie_domain_hash($hashref)) {
1.234 foxr 4559: chop($qresult);
1.387 albertel 4560: &Reply($client, \$qresult, $userinput);
1.234 foxr 4561: } else {
4562: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4563: "while attempting courseiddump\n", $userinput);
4564: }
4565: } else {
4566: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
4567: "while attempting courseiddump\n", $userinput);
4568: }
4569: return 1;
4570: }
4571: ®ister_handler("courseiddump", \&dump_course_id_handler, 0, 1, 0);
1.238 foxr 4572:
1.438 raeburn 4573: sub course_lastaccess_handler {
4574: my ($cmd, $tail, $client) = @_;
4575: my $userinput = "$cmd:$tail";
4576: my ($cdom,$cnum) = split(':',$tail);
4577: my (%lastaccess,$qresult);
4578: my $hashref = &tie_domain_hash($cdom, "nohist_courseids", &GDBM_WRCREAT());
4579: if ($hashref) {
4580: while (my ($key,$value) = each(%$hashref)) {
4581: my ($unesc_key,$lasttime);
4582: $unesc_key = &unescape($key);
4583: if ($cnum) {
4584: next unless ($unesc_key =~ /\Q$cdom\E_\Q$cnum\E$/);
4585: }
4586: if ($unesc_key =~ /^lasttime:($LONCAPA::match_domain\_$LONCAPA::match_courseid)/) {
4587: $lastaccess{$1} = $value;
4588: } else {
4589: my $items = &Apache::lonnet::thaw_unescape($value);
4590: if (ref($items) eq 'HASH') {
4591: unless ($lastaccess{$unesc_key}) {
4592: $lastaccess{$unesc_key} = '';
4593: }
4594: } else {
4595: my @courseitems = split(':',$value);
4596: $lastaccess{$unesc_key} = pop(@courseitems);
4597: }
4598: }
4599: }
4600: foreach my $cid (sort(keys(%lastaccess))) {
4601: $qresult.=&escape($cid).'='.$lastaccess{$cid}.'&';
4602: }
4603: if (&untie_domain_hash($hashref)) {
4604: if ($qresult) {
4605: chop($qresult);
4606: }
4607: &Reply($client, \$qresult, $userinput);
4608: } else {
4609: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4610: "while attempting lastacourseaccess\n", $userinput);
4611: }
4612: } else {
4613: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
4614: "while attempting lastcourseaccess\n", $userinput);
4615: }
4616: return 1;
4617: }
4618: ®ister_handler("courselastaccess",\&course_lastaccess_handler, 0, 1, 0);
4619:
1.489.2.36 raeburn 4620: sub course_sessions_handler {
4621: my ($cmd, $tail, $client) = @_;
4622: my $userinput = "$cmd:$tail";
4623: my ($cdom,$cnum,$lastactivity) = split(':',$tail);
4624: my $dbsuffix = '_'.$cdom.'_'.$cnum.'.db';
4625: my (%sessions,$qresult);
4626: my $now=time;
4627: if (opendir(DIR,$perlvar{'lonIDsDir'})) {
4628: my $filename;
4629: while ($filename=readdir(DIR)) {
4630: next if ($filename=~/^\./);
4631: next if ($filename=~/^publicuser_/);
4632: next if ($filename=~/^[a-f0-9]+_(linked|lti_\d+)\.id$/);
1.489.2.37 raeburn 4633: if ($filename =~ /^($LONCAPA::match_username)_\d+_($LONCAPA::match_domain)_/) {
1.489.2.36 raeburn 4634: my ($uname,$udom) = ($1,$2);
1.489.2.37 raeburn 4635: next unless (-e "$perlvar{'lonDaemons'}/tmp/$uname$dbsuffix");
1.489.2.36 raeburn 4636: my $mtime = (stat("$perlvar{'lonIDsDir'}/$filename"))[9];
4637: if ($lastactivity < 0) {
1.489.2.38 raeburn 4638: next if ($mtime-$now > $lastactivity);
1.489.2.36 raeburn 4639: } else {
1.489.2.38 raeburn 4640: next if ($now-$mtime > $lastactivity);
1.489.2.36 raeburn 4641: }
4642: $sessions{$uname.':'.$udom} = $mtime;
4643: }
4644: }
4645: closedir(DIR);
4646: }
4647: foreach my $user (keys(%sessions)) {
4648: $qresult.=&escape($user).'='.$sessions{$user}.'&';
4649: }
4650: if ($qresult) {
4651: chop($qresult);
4652: }
4653: &Reply($client, \$qresult, $userinput);
4654: return 1;
4655: }
4656: ®ister_handler("coursesessions",\&course_sessions_handler, 0, 1, 0);
4657:
1.238 foxr 4658: #
1.348 raeburn 4659: # Puts an unencrypted entry in a namespace db file at the domain level
4660: #
4661: # Parameters:
4662: # $cmd - The command that got us here.
4663: # $tail - Tail of the command (remaining parameters).
4664: # $client - File descriptor connected to client.
4665: # Returns
4666: # 0 - Requested to exit, caller should shut down.
4667: # 1 - Continue processing.
4668: # Side effects:
4669: # reply is written to $client.
4670: #
4671: sub put_domain_handler {
4672: my ($cmd,$tail,$client) = @_;
4673:
4674: my $userinput = "$cmd:$tail";
4675:
4676: my ($udom,$namespace,$what) =split(/:/,$tail,3);
4677: chomp($what);
4678: my @pairs=split(/\&/,$what);
4679: my $hashref = &tie_domain_hash($udom, "$namespace", &GDBM_WRCREAT(),
4680: "P", $what);
4681: if ($hashref) {
4682: foreach my $pair (@pairs) {
4683: my ($key,$value)=split(/=/,$pair);
4684: $hashref->{$key}=$value;
4685: }
4686: if (&untie_domain_hash($hashref)) {
4687: &Reply($client, "ok\n", $userinput);
4688: } else {
4689: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4690: "while attempting putdom\n", $userinput);
4691: }
4692: } else {
4693: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
4694: "while attempting putdom\n", $userinput);
4695: }
4696:
4697: return 1;
4698: }
4699: ®ister_handler("putdom", \&put_domain_handler, 0, 1, 0);
4700:
4701: # Unencrypted get from the namespace database file at the domain level.
4702: # This function retrieves a keyed item from a specific named database in the
4703: # domain directory.
4704: #
4705: # Parameters:
1.489.2.40 raeburn 4706: # $cmd - Command request keyword (getdom).
1.348 raeburn 4707: # $tail - Tail of the command. This is a colon separated list
4708: # consisting of the domain and the 'namespace'
4709: # which selects the gdbm file to do the lookup in,
4710: # & separated list of keys to lookup. Note that
4711: # the values are returned as an & separated list too.
4712: # $client - File descriptor open on the client.
4713: # Returns:
4714: # 1 - Continue processing.
4715: # 0 - Exit.
4716: # Side effects:
4717: # reply is written to $client.
4718: #
4719:
4720: sub get_domain_handler {
4721: my ($cmd, $tail, $client) = @_;
4722:
1.489.2.34 raeburn 4723: my $userinput = "$cmd:$tail";
1.348 raeburn 4724:
4725: my ($udom,$namespace,$what)=split(/:/,$tail,3);
1.489.2.43.2. (raeburn 4726:): if ($namespace =~ /^enc/) {
4727:): &Failure( $client, "refused\n", $userinput);
4728:): } else {
4729:): my $res = LONCAPA::Lond::get_dom($userinput);
4730:): if ($res =~ /^error:/) {
4731:): &Failure($client, \$res, $userinput);
4732:): } else {
4733:): &Reply($client, \$res, $userinput);
4734:): }
4735:): }
4736:):
4737:): return 1;
4738:): }
4739:): ®ister_handler("getdom", \&get_domain_handler, 0, 1, 0);
4740:):
4741:): sub encrypted_get_domain_handler {
4742:): my ($cmd, $tail, $client) = @_;
4743:):
4744:): my $userinput = "$cmd:$tail";
4745:):
1.489.2.40 raeburn 4746: my $res = LONCAPA::Lond::get_dom($userinput);
4747: if ($res =~ /^error:/) {
4748: &Failure($client, \$res, $userinput);
1.348 raeburn 4749: } else {
1.489.2.43.2. (raeburn 4750:): if ($cipher) {
4751:): my $cmdlength=length($res);
4752:): $res.=" ";
4753:): my $encres='';
4754:): for (my $encidx=0;$encidx<=$cmdlength;$encidx+=8) {
4755:): $encres.= unpack("H16",
4756:): $cipher->encrypt(substr($res,
4757:): $encidx,
4758:): 8)));
4759:): }
4760:): &Reply( $client,"enc:$cmdlength:$encres\n",$userinput);
4761:): } else {
4762:): &Failure( $client, "error:no_key\n",$userinput);
4763:): }
1.348 raeburn 4764: }
4765: return 1;
4766: }
1.489.2.43.2. (raeburn 4767:): ®ister_handler("egetdom", \&encrypted_get_domain_handler, 1, 1, 0);
1.348 raeburn 4768:
1.420 raeburn 4769: #
1.238 foxr 4770: # Puts an id to a domains id database.
4771: #
4772: # Parameters:
4773: # $cmd - The command that triggered us.
4774: # $tail - Remainder of the request other than the command. This is a
4775: # colon separated list containing:
4776: # $domain - The domain for which we are writing the id.
4777: # $pairs - The id info to write... this is and & separated list
4778: # of keyword=value.
4779: # $client - Socket open on the client.
4780: # Returns:
4781: # 1 - Continue processing.
4782: # Side effects:
4783: # reply is written to $client.
4784: #
4785: sub put_id_handler {
4786: my ($cmd,$tail,$client) = @_;
4787:
4788:
4789: my $userinput = "$cmd:$tail";
4790:
4791: my ($udom,$what)=split(/:/,$tail);
4792: chomp($what);
4793: my @pairs=split(/\&/,$what);
4794: my $hashref = &tie_domain_hash($udom, "ids", &GDBM_WRCREAT(),
4795: "P", $what);
4796: if ($hashref) {
4797: foreach my $pair (@pairs) {
4798: my ($key,$value)=split(/=/,$pair);
4799: $hashref->{$key}=$value;
4800: }
1.311 albertel 4801: if (&untie_domain_hash($hashref)) {
1.238 foxr 4802: &Reply($client, "ok\n", $userinput);
4803: } else {
4804: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4805: "while attempting idput\n", $userinput);
4806: }
4807: } else {
4808: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
4809: "while attempting idput\n", $userinput);
4810: }
4811:
4812: return 1;
4813: }
1.263 albertel 4814: ®ister_handler("idput", \&put_id_handler, 0, 1, 0);
1.238 foxr 4815:
4816: #
4817: # Retrieves a set of id values from the id database.
4818: # Returns an & separated list of results, one for each requested id to the
4819: # client.
4820: #
4821: # Parameters:
4822: # $cmd - Command keyword that caused us to be dispatched.
4823: # $tail - Tail of the command. Consists of a colon separated:
4824: # domain - the domain whose id table we dump
4825: # ids Consists of an & separated list of
4826: # id keywords whose values will be fetched.
4827: # nonexisting keywords will have an empty value.
4828: # $client - Socket open on the client.
4829: #
4830: # Returns:
4831: # 1 - indicating processing should continue.
4832: # Side effects:
4833: # An & separated list of results is written to $client.
4834: #
4835: sub get_id_handler {
4836: my ($cmd, $tail, $client) = @_;
4837:
4838:
4839: my $userinput = "$client:$tail";
4840:
4841: my ($udom,$what)=split(/:/,$tail);
4842: chomp($what);
4843: my @queries=split(/\&/,$what);
4844: my $qresult='';
4845: my $hashref = &tie_domain_hash($udom, "ids", &GDBM_READER());
4846: if ($hashref) {
4847: for (my $i=0;$i<=$#queries;$i++) {
4848: $qresult.="$hashref->{$queries[$i]}&";
4849: }
1.311 albertel 4850: if (&untie_domain_hash($hashref)) {
1.238 foxr 4851: $qresult=~s/\&$//;
1.387 albertel 4852: &Reply($client, \$qresult, $userinput);
1.238 foxr 4853: } else {
4854: &Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ".
4855: "while attempting idget\n",$userinput);
4856: }
4857: } else {
4858: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
4859: "while attempting idget\n",$userinput);
4860: }
4861:
4862: return 1;
4863: }
1.263 albertel 4864: ®ister_handler("idget", \&get_id_handler, 0, 1, 0);
1.238 foxr 4865:
1.489.2.7 raeburn 4866: # Deletes one or more ids in a domain's id database.
1.489.2.6 raeburn 4867: #
4868: # Parameters:
4869: # $cmd - Command keyword (iddel).
4870: # $tail - Command tail. In this case a colon
4871: # separated list containing:
4872: # The domain for which we are deleting the id(s).
4873: # &-separated list of id(s) to delete.
4874: # $client - File open on client socket.
4875: # Returns:
4876: # 1 - Continue processing
4877: # 0 - Exit server.
4878: #
4879: #
4880:
4881: sub del_id_handler {
4882: my ($cmd,$tail,$client) = @_;
4883:
4884: my $userinput = "$cmd:$tail";
4885:
4886: my ($udom,$what)=split(/:/,$tail);
4887: chomp($what);
4888: my $hashref = &tie_domain_hash($udom, "ids", &GDBM_WRCREAT(),
4889: "D", $what);
4890: if ($hashref) {
4891: my @keys=split(/\&/,$what);
4892: foreach my $key (@keys) {
4893: delete($hashref->{$key});
4894: }
4895: if (&untie_user_hash($hashref)) {
4896: &Reply($client, "ok\n", $userinput);
4897: } else {
4898: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4899: "while attempting iddel\n", $userinput);
4900: }
4901: } else {
4902: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
4903: "while attempting iddel\n", $userinput);
4904: }
4905: return 1;
4906: }
4907: ®ister_handler("iddel", \&del_id_handler, 0, 1, 0);
4908:
1.238 foxr 4909: #
1.299 raeburn 4910: # Puts broadcast e-mail sent by Domain Coordinator in nohist_dcmail database
4911: #
4912: # Parameters
4913: # $cmd - Command keyword that caused us to be dispatched.
4914: # $tail - Tail of the command. Consists of a colon separated:
4915: # domain - the domain whose dcmail we are recording
4916: # email Consists of key=value pair
4917: # where key is unique msgid
4918: # and value is message (in XML)
4919: # $client - Socket open on the client.
4920: #
4921: # Returns:
4922: # 1 - indicating processing should continue.
4923: # Side effects
4924: # reply is written to $client.
4925: #
4926: sub put_dcmail_handler {
4927: my ($cmd,$tail,$client) = @_;
4928: my $userinput = "$cmd:$tail";
1.463 foxr 4929:
4930:
1.299 raeburn 4931: my ($udom,$what)=split(/:/,$tail);
4932: chomp($what);
4933: my $hashref = &tie_domain_hash($udom, "nohist_dcmail", &GDBM_WRCREAT());
4934: if ($hashref) {
4935: my ($key,$value)=split(/=/,$what);
4936: $hashref->{$key}=$value;
4937: }
1.311 albertel 4938: if (&untie_domain_hash($hashref)) {
1.299 raeburn 4939: &Reply($client, "ok\n", $userinput);
4940: } else {
4941: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4942: "while attempting dcmailput\n", $userinput);
4943: }
4944: return 1;
4945: }
4946: ®ister_handler("dcmailput", \&put_dcmail_handler, 0, 1, 0);
4947:
4948: #
4949: # Retrieves broadcast e-mail from nohist_dcmail database
4950: # Returns to client an & separated list of key=value pairs,
4951: # where key is msgid and value is message information.
4952: #
4953: # Parameters
4954: # $cmd - Command keyword that caused us to be dispatched.
4955: # $tail - Tail of the command. Consists of a colon separated:
4956: # domain - the domain whose dcmail table we dump
4957: # startfilter - beginning of time window
4958: # endfilter - end of time window
4959: # sendersfilter - & separated list of username:domain
4960: # for senders to search for.
4961: # $client - Socket open on the client.
4962: #
4963: # Returns:
4964: # 1 - indicating processing should continue.
4965: # Side effects
4966: # reply (& separated list of msgid=messageinfo pairs) is
4967: # written to $client.
4968: #
4969: sub dump_dcmail_handler {
4970: my ($cmd, $tail, $client) = @_;
4971:
4972: my $userinput = "$cmd:$tail";
4973: my ($udom,$startfilter,$endfilter,$sendersfilter) = split(/:/,$tail);
4974: chomp($sendersfilter);
4975: my @senders = ();
4976: if (defined($startfilter)) {
4977: $startfilter=&unescape($startfilter);
4978: } else {
4979: $startfilter='.';
4980: }
4981: if (defined($endfilter)) {
4982: $endfilter=&unescape($endfilter);
4983: } else {
4984: $endfilter='.';
4985: }
4986: if (defined($sendersfilter)) {
4987: $sendersfilter=&unescape($sendersfilter);
1.300 albertel 4988: @senders = map { &unescape($_) } split(/\&/,$sendersfilter);
1.299 raeburn 4989: }
4990:
4991: my $qresult='';
4992: my $hashref = &tie_domain_hash($udom, "nohist_dcmail", &GDBM_WRCREAT());
4993: if ($hashref) {
4994: while (my ($key,$value) = each(%$hashref)) {
4995: my $match = 1;
1.303 albertel 4996: my ($timestamp,$subj,$uname,$udom) =
4997: split(/:/,&unescape(&unescape($key)),5); # yes, twice really
1.299 raeburn 4998: $subj = &unescape($subj);
4999: unless ($startfilter eq '.' || !defined($startfilter)) {
5000: if ($timestamp < $startfilter) {
5001: $match = 0;
5002: }
5003: }
5004: unless ($endfilter eq '.' || !defined($endfilter)) {
5005: if ($timestamp > $endfilter) {
5006: $match = 0;
5007: }
5008: }
5009: unless (@senders < 1) {
5010: unless (grep/^$uname:$udom$/,@senders) {
5011: $match = 0;
5012: }
5013: }
5014: if ($match == 1) {
5015: $qresult.=$key.'='.$value.'&';
5016: }
5017: }
1.311 albertel 5018: if (&untie_domain_hash($hashref)) {
1.299 raeburn 5019: chop($qresult);
1.387 albertel 5020: &Reply($client, \$qresult, $userinput);
1.299 raeburn 5021: } else {
5022: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
5023: "while attempting dcmaildump\n", $userinput);
5024: }
5025: } else {
5026: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
5027: "while attempting dcmaildump\n", $userinput);
5028: }
5029: return 1;
5030: }
5031:
5032: ®ister_handler("dcmaildump", \&dump_dcmail_handler, 0, 1, 0);
5033:
5034: #
5035: # Puts domain roles in nohist_domainroles database
5036: #
5037: # Parameters
5038: # $cmd - Command keyword that caused us to be dispatched.
5039: # $tail - Tail of the command. Consists of a colon separated:
5040: # domain - the domain whose roles we are recording
5041: # role - Consists of key=value pair
5042: # where key is unique role
5043: # and value is start/end date information
5044: # $client - Socket open on the client.
5045: #
5046: # Returns:
5047: # 1 - indicating processing should continue.
5048: # Side effects
5049: # reply is written to $client.
5050: #
5051:
5052: sub put_domainroles_handler {
5053: my ($cmd,$tail,$client) = @_;
5054:
5055: my $userinput = "$cmd:$tail";
5056: my ($udom,$what)=split(/:/,$tail);
5057: chomp($what);
5058: my @pairs=split(/\&/,$what);
5059: my $hashref = &tie_domain_hash($udom, "nohist_domainroles", &GDBM_WRCREAT());
5060: if ($hashref) {
5061: foreach my $pair (@pairs) {
5062: my ($key,$value)=split(/=/,$pair);
5063: $hashref->{$key}=$value;
5064: }
1.311 albertel 5065: if (&untie_domain_hash($hashref)) {
1.299 raeburn 5066: &Reply($client, "ok\n", $userinput);
5067: } else {
5068: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
5069: "while attempting domroleput\n", $userinput);
5070: }
5071: } else {
5072: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
5073: "while attempting domroleput\n", $userinput);
5074: }
5075:
5076: return 1;
5077: }
5078:
5079: ®ister_handler("domroleput", \&put_domainroles_handler, 0, 1, 0);
5080:
5081: #
5082: # Retrieves domain roles from nohist_domainroles database
5083: # Returns to client an & separated list of key=value pairs,
5084: # where key is role and value is start and end date information.
5085: #
5086: # Parameters
5087: # $cmd - Command keyword that caused us to be dispatched.
5088: # $tail - Tail of the command. Consists of a colon separated:
5089: # domain - the domain whose domain roles table we dump
5090: # $client - Socket open on the client.
5091: #
5092: # Returns:
5093: # 1 - indicating processing should continue.
5094: # Side effects
5095: # reply (& separated list of role=start/end info pairs) is
5096: # written to $client.
5097: #
5098: sub dump_domainroles_handler {
5099: my ($cmd, $tail, $client) = @_;
5100:
5101: my $userinput = "$cmd:$tail";
5102: my ($udom,$startfilter,$endfilter,$rolesfilter) = split(/:/,$tail);
5103: chomp($rolesfilter);
5104: my @roles = ();
5105: if (defined($startfilter)) {
5106: $startfilter=&unescape($startfilter);
5107: } else {
5108: $startfilter='.';
5109: }
5110: if (defined($endfilter)) {
5111: $endfilter=&unescape($endfilter);
5112: } else {
5113: $endfilter='.';
5114: }
5115: if (defined($rolesfilter)) {
5116: $rolesfilter=&unescape($rolesfilter);
1.300 albertel 5117: @roles = split(/\&/,$rolesfilter);
1.299 raeburn 5118: }
1.421 raeburn 5119:
1.299 raeburn 5120: my $hashref = &tie_domain_hash($udom, "nohist_domainroles", &GDBM_WRCREAT());
5121: if ($hashref) {
5122: my $qresult = '';
5123: while (my ($key,$value) = each(%$hashref)) {
5124: my $match = 1;
1.421 raeburn 5125: my ($end,$start) = split(/:/,&unescape($value));
1.299 raeburn 5126: my ($trole,$uname,$udom,$runame,$rudom,$rsec) = split(/:/,&unescape($key));
1.421 raeburn 5127: unless (@roles < 1) {
5128: unless (grep/^\Q$trole\E$/,@roles) {
5129: $match = 0;
5130: next;
5131: }
5132: }
1.299 raeburn 5133: unless ($startfilter eq '.' || !defined($startfilter)) {
1.415 raeburn 5134: if ((defined($start)) && ($start >= $startfilter)) {
1.299 raeburn 5135: $match = 0;
1.421 raeburn 5136: next;
1.299 raeburn 5137: }
5138: }
5139: unless ($endfilter eq '.' || !defined($endfilter)) {
1.421 raeburn 5140: if ((defined($end)) && (($end > 0) && ($end <= $endfilter))) {
1.299 raeburn 5141: $match = 0;
1.421 raeburn 5142: next;
1.299 raeburn 5143: }
5144: }
5145: if ($match == 1) {
5146: $qresult.=$key.'='.$value.'&';
5147: }
5148: }
1.311 albertel 5149: if (&untie_domain_hash($hashref)) {
1.299 raeburn 5150: chop($qresult);
1.387 albertel 5151: &Reply($client, \$qresult, $userinput);
1.299 raeburn 5152: } else {
5153: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
5154: "while attempting domrolesdump\n", $userinput);
5155: }
5156: } else {
5157: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
5158: "while attempting domrolesdump\n", $userinput);
5159: }
5160: return 1;
5161: }
5162:
5163: ®ister_handler("domrolesdump", \&dump_domainroles_handler, 0, 1, 0);
5164:
5165:
1.238 foxr 5166: # Process the tmpput command I'm not sure what this does.. Seems to
5167: # create a file in the lonDaemons/tmp directory of the form $id.tmp
5168: # where Id is the client's ip concatenated with a sequence number.
5169: # The file will contain some value that is passed in. Is this e.g.
5170: # a login token?
5171: #
5172: # Parameters:
5173: # $cmd - The command that got us dispatched.
5174: # $tail - The remainder of the request following $cmd:
5175: # In this case this will be the contents of the file.
5176: # $client - Socket connected to the client.
5177: # Returns:
5178: # 1 indicating processing can continue.
5179: # Side effects:
5180: # A file is created in the local filesystem.
5181: # A reply is sent to the client.
5182: sub tmp_put_handler {
5183: my ($cmd, $what, $client) = @_;
5184:
5185: my $userinput = "$cmd:$what"; # Reconstruct for logging.
5186:
1.347 raeburn 5187: my ($record,$context) = split(/:/,$what);
5188: if ($context ne '') {
5189: chomp($context);
5190: $context = &unescape($context);
5191: }
5192: my ($id,$store);
1.238 foxr 5193: $tmpsnum++;
1.489.2.42 raeburn 5194: my $numtries = 0;
5195: my $execdir=$perlvar{'lonDaemons'};
5196: if (($context eq 'resetpw') || ($context eq 'createaccount') ||
5197: ($context eq 'sso') || ($context eq 'link') || ($context eq 'retry')) {
5198: $id = &md5_hex(&md5_hex(time.{}.rand().$$.$tmpsnum));
5199: while ((-e "$execdir/tmp/$id.tmp") && ($numtries <10)) {
5200: undef($id);
5201: $id = &md5_hex(&md5_hex(time.{}.rand().$$.$tmpsnum));
5202: $numtries ++;
5203: }
1.347 raeburn 5204: } else {
5205: $id = $$.'_'.$clientip.'_'.$tmpsnum;
5206: }
1.238 foxr 5207: $id=~s/\W/\_/g;
1.347 raeburn 5208: $record=~s/\n//g;
1.489.2.42 raeburn 5209: if (($id ne '') &&
5210: ($store=IO::File->new(">$execdir/tmp/$id.tmp"))) {
1.347 raeburn 5211: print $store $record;
1.238 foxr 5212: close $store;
1.387 albertel 5213: &Reply($client, \$id, $userinput);
1.238 foxr 5214: } else {
5215: &Failure( $client, "error: ".($!+0)."IO::File->new Failed ".
5216: "while attempting tmpput\n", $userinput);
5217: }
5218: return 1;
5219:
5220: }
5221: ®ister_handler("tmpput", \&tmp_put_handler, 0, 1, 0);
1.263 albertel 5222:
1.238 foxr 5223: # Processes the tmpget command. This command returns the contents
5224: # of a temporary resource file(?) created via tmpput.
5225: #
5226: # Paramters:
5227: # $cmd - Command that got us dispatched.
5228: # $id - Tail of the command, contain the id of the resource
5229: # we want to fetch.
5230: # $client - socket open on the client.
5231: # Return:
5232: # 1 - Inidcating processing can continue.
5233: # Side effects:
5234: # A reply is sent to the client.
5235: #
5236: sub tmp_get_handler {
5237: my ($cmd, $id, $client) = @_;
5238:
5239: my $userinput = "$cmd:$id";
5240:
5241:
5242: $id=~s/\W/\_/g;
5243: my $store;
5244: my $execdir=$perlvar{'lonDaemons'};
5245: if ($store=IO::File->new("$execdir/tmp/$id.tmp")) {
5246: my $reply=<$store>;
1.387 albertel 5247: &Reply( $client, \$reply, $userinput);
1.238 foxr 5248: close $store;
5249: } else {
5250: &Failure( $client, "error: ".($!+0)."IO::File->new Failed ".
5251: "while attempting tmpget\n", $userinput);
5252: }
5253:
5254: return 1;
5255: }
5256: ®ister_handler("tmpget", \&tmp_get_handler, 0, 1, 0);
1.263 albertel 5257:
1.238 foxr 5258: #
5259: # Process the tmpdel command. This command deletes a temp resource
5260: # created by the tmpput command.
5261: #
5262: # Parameters:
5263: # $cmd - Command that got us here.
5264: # $id - Id of the temporary resource created.
5265: # $client - socket open on the client process.
5266: #
5267: # Returns:
5268: # 1 - Indicating processing should continue.
5269: # Side Effects:
5270: # A file is deleted
5271: # A reply is sent to the client.
5272: sub tmp_del_handler {
5273: my ($cmd, $id, $client) = @_;
5274:
5275: my $userinput= "$cmd:$id";
5276:
5277: chomp($id);
5278: $id=~s/\W/\_/g;
5279: my $execdir=$perlvar{'lonDaemons'};
5280: if (unlink("$execdir/tmp/$id.tmp")) {
5281: &Reply($client, "ok\n", $userinput);
5282: } else {
5283: &Failure( $client, "error: ".($!+0)."Unlink tmp Failed ".
5284: "while attempting tmpdel\n", $userinput);
5285: }
5286:
5287: return 1;
5288:
5289: }
5290: ®ister_handler("tmpdel", \&tmp_del_handler, 0, 1, 0);
1.263 albertel 5291:
1.238 foxr 5292: #
1.489.2.39 raeburn 5293: # Process the updatebalcookie command. This command updates a
5294: # cookie in the lonBalancedir directory on a load balancer node.
5295: #
5296: # Parameters:
5297: # $cmd - Command that got us here.
5298: # $tail - Tail of the request (escaped cookie: escaped current entry)
5299: #
5300: # $client - socket open on the client process.
5301: #
5302: # Returns:
5303: # 1 - Indicating processing should continue.
5304: # Side Effects:
5305: # A cookie file is updated from the lonBalancedir directory
5306: # A reply is sent to the client.
5307: #
5308: sub update_balcookie_handler {
5309: my ($cmd, $tail, $client) = @_;
5310:
5311: my $userinput= "$cmd:$tail";
5312: chomp($tail);
5313: my ($cookie,$lastentry) = map { &unescape($_) } (split(/:/,$tail));
5314:
5315: my $updatedone;
5316: if ($cookie =~ /^$LONCAPA::match_domain\_$LONCAPA::match_username\_[a-f0-9]{32}$/) {
5317: my $execdir=$perlvar{'lonBalanceDir'};
5318: if (-e "$execdir/$cookie.id") {
5319: my $doupdate;
5320: if (open(my $fh,'<',"$execdir/$cookie.id")) {
5321: while (my $line = <$fh>) {
5322: chomp($line);
5323: if ($line eq $lastentry) {
5324: $doupdate = 1;
5325: last;
5326: }
5327: }
5328: close($fh);
5329: }
5330: if ($doupdate) {
5331: if (open(my $fh,'>',"$execdir/$cookie.id")) {
5332: print $fh $clientname;
5333: close($fh);
5334: $updatedone = 1;
5335: }
5336: }
5337: }
5338: }
5339: if ($updatedone) {
5340: &Reply($client, "ok\n", $userinput);
5341: } else {
5342: &Failure( $client, "error: ".($!+0)."file update failed ".
5343: "while attempting updatebalcookie\n", $userinput);
5344: }
5345: return 1;
5346: }
5347: ®ister_handler("updatebalcookie", \&update_balcookie_handler, 0, 1, 0);
5348:
5349: #
1.489.2.32 raeburn 5350: # Process the delbalcookie command. This command deletes a balancer
1.489.2.39 raeburn 5351: # cookie in the lonBalancedir directory on a load balancer node.
1.489.2.32 raeburn 5352: #
5353: # Parameters:
5354: # $cmd - Command that got us here.
5355: # $cookie - Cookie to be deleted.
5356: # $client - socket open on the client process.
5357: #
5358: # Returns:
5359: # 1 - Indicating processing should continue.
5360: # Side Effects:
5361: # A cookie file is deleted from the lonBalancedir directory
5362: # A reply is sent to the client.
5363: sub del_balcookie_handler {
5364: my ($cmd, $cookie, $client) = @_;
5365:
5366: my $userinput= "$cmd:$cookie";
5367:
5368: chomp($cookie);
1.489.2.39 raeburn 5369: $cookie = &unescape($cookie);
1.489.2.32 raeburn 5370: my $deleted = '';
5371: if ($cookie =~ /^$LONCAPA::match_domain\_$LONCAPA::match_username\_[a-f0-9]{32}$/) {
5372: my $execdir=$perlvar{'lonBalanceDir'};
5373: if (-e "$execdir/$cookie.id") {
5374: if (open(my $fh,'<',"$execdir/$cookie.id")) {
5375: my $dodelete;
5376: while (my $line = <$fh>) {
5377: chomp($line);
5378: if ($line eq $clientname) {
5379: $dodelete = 1;
5380: last;
5381: }
5382: }
5383: close($fh);
5384: if ($dodelete) {
5385: if (unlink("$execdir/$cookie.id")) {
5386: $deleted = 1;
5387: }
5388: }
5389: }
5390: }
5391: }
5392: if ($deleted) {
5393: &Reply($client, "ok\n", $userinput);
5394: } else {
5395: &Failure( $client, "error: ".($!+0)."Unlinking cookie file Failed ".
5396: "while attempting delbalcookie\n", $userinput);
5397: }
5398: return 1;
5399: }
5400: ®ister_handler("delbalcookie", \&del_balcookie_handler, 0, 1, 0);
5401:
5402: #
1.246 foxr 5403: # Processes the setannounce command. This command
5404: # creates a file named announce.txt in the top directory of
5405: # the documentn root and sets its contents. The announce.txt file is
5406: # printed in its entirety at the LonCAPA login page. Note:
5407: # once the announcement.txt fileis created it cannot be deleted.
5408: # However, setting the contents of the file to empty removes the
5409: # announcement from the login page of loncapa so who cares.
5410: #
5411: # Parameters:
5412: # $cmd - The command that got us dispatched.
5413: # $announcement - The text of the announcement.
5414: # $client - Socket open on the client process.
5415: # Retunrns:
5416: # 1 - Indicating request processing should continue
5417: # Side Effects:
5418: # The file {DocRoot}/announcement.txt is created.
5419: # A reply is sent to $client.
5420: #
5421: sub set_announce_handler {
5422: my ($cmd, $announcement, $client) = @_;
5423:
5424: my $userinput = "$cmd:$announcement";
5425:
5426: chomp($announcement);
5427: $announcement=&unescape($announcement);
5428: if (my $store=IO::File->new('>'.$perlvar{'lonDocRoot'}.
5429: '/announcement.txt')) {
5430: print $store $announcement;
5431: close $store;
5432: &Reply($client, "ok\n", $userinput);
5433: } else {
5434: &Failure($client, "error: ".($!+0)."\n", $userinput);
5435: }
5436:
5437: return 1;
5438: }
5439: ®ister_handler("setannounce", \&set_announce_handler, 0, 1, 0);
1.263 albertel 5440:
1.246 foxr 5441: #
5442: # Return the version of the daemon. This can be used to determine
5443: # the compatibility of cross version installations or, alternatively to
5444: # simply know who's out of date and who isn't. Note that the version
5445: # is returned concatenated with the tail.
5446: # Parameters:
5447: # $cmd - the request that dispatched to us.
5448: # $tail - Tail of the request (client's version?).
5449: # $client - Socket open on the client.
5450: #Returns:
5451: # 1 - continue processing requests.
5452: # Side Effects:
5453: # Replies with version to $client.
5454: sub get_version_handler {
5455: my ($cmd, $tail, $client) = @_;
5456:
5457: my $userinput = $cmd.$tail;
5458:
5459: &Reply($client, &version($userinput)."\n", $userinput);
5460:
5461:
5462: return 1;
5463: }
5464: ®ister_handler("version", \&get_version_handler, 0, 1, 0);
1.263 albertel 5465:
1.246 foxr 5466: # Set the current host and domain. This is used to support
5467: # multihomed systems. Each IP of the system, or even separate daemons
5468: # on the same IP can be treated as handling a separate lonCAPA virtual
5469: # machine. This command selects the virtual lonCAPA. The client always
5470: # knows the right one since it is lonc and it is selecting the domain/system
5471: # from the hosts.tab file.
5472: # Parameters:
5473: # $cmd - Command that dispatched us.
5474: # $tail - Tail of the command (domain/host requested).
5475: # $socket - Socket open on the client.
5476: #
5477: # Returns:
5478: # 1 - Indicates the program should continue to process requests.
5479: # Side-effects:
5480: # The default domain/system context is modified for this daemon.
5481: # a reply is sent to the client.
5482: #
5483: sub set_virtual_host_handler {
5484: my ($cmd, $tail, $socket) = @_;
5485:
5486: my $userinput ="$cmd:$tail";
5487:
5488: &Reply($client, &sethost($userinput)."\n", $userinput);
5489:
5490:
5491: return 1;
5492: }
1.247 albertel 5493: ®ister_handler("sethost", \&set_virtual_host_handler, 0, 1, 0);
1.246 foxr 5494:
5495: # Process a request to exit:
5496: # - "bye" is sent to the client.
5497: # - The client socket is shutdown and closed.
5498: # - We indicate to the caller that we should exit.
5499: # Formal Parameters:
5500: # $cmd - The command that got us here.
5501: # $tail - Tail of the command (empty).
5502: # $client - Socket open on the tail.
5503: # Returns:
5504: # 0 - Indicating the program should exit!!
5505: #
5506: sub exit_handler {
5507: my ($cmd, $tail, $client) = @_;
5508:
5509: my $userinput = "$cmd:$tail";
5510:
5511: &logthis("Client $clientip ($clientname) hanging up: $userinput");
5512: &Reply($client, "bye\n", $userinput);
5513: $client->shutdown(2); # shutdown the socket forcibly.
5514: $client->close();
5515:
5516: return 0;
5517: }
1.248 foxr 5518: ®ister_handler("exit", \&exit_handler, 0,1,1);
5519: ®ister_handler("init", \&exit_handler, 0,1,1);
5520: ®ister_handler("quit", \&exit_handler, 0,1,1);
5521:
5522: # Determine if auto-enrollment is enabled.
5523: # Note that the original had what I believe to be a defect.
5524: # The original returned 0 if the requestor was not a registerd client.
5525: # It should return "refused".
5526: # Formal Parameters:
5527: # $cmd - The command that invoked us.
5528: # $tail - The tail of the command (Extra command parameters.
5529: # $client - The socket open on the client that issued the request.
5530: # Returns:
5531: # 1 - Indicating processing should continue.
5532: #
5533: sub enrollment_enabled_handler {
5534: my ($cmd, $tail, $client) = @_;
5535: my $userinput = $cmd.":".$tail; # For logging purposes.
5536:
5537:
1.337 albertel 5538: my ($cdom) = split(/:/, $tail, 2); # Domain we're asking about.
5539:
1.248 foxr 5540: my $outcome = &localenroll::run($cdom);
1.387 albertel 5541: &Reply($client, \$outcome, $userinput);
1.248 foxr 5542:
5543: return 1;
5544: }
5545: ®ister_handler("autorun", \&enrollment_enabled_handler, 0, 1, 0);
5546:
1.417 raeburn 5547: #
1.423 raeburn 5548: # Validate an institutional code used for a LON-CAPA course.
1.417 raeburn 5549: #
5550: # Formal Parameters:
5551: # $cmd - The command request that got us dispatched.
5552: # $tail - The tail of the command. In this case,
5553: # this is a colon separated set of words that will be split
5554: # into:
1.424 raeburn 5555: # $dom - The domain for which the check of
5556: # institutional course code will occur.
5557: #
5558: # $instcode - The institutional code for the course
5559: # being requested, or validated for rights
5560: # to request.
5561: #
5562: # $owner - The course requestor (who will be the
5563: # course owner, in the form username:domain
5564: #
1.417 raeburn 5565: # $client - Socket open on the client.
5566: # Returns:
5567: # 1 - Indicating processing should continue.
5568: #
5569: sub validate_instcode_handler {
5570: my ($cmd, $tail, $client) = @_;
5571: my $userinput = "$cmd:$tail";
1.423 raeburn 5572: my ($dom,$instcode,$owner) = split(/:/, $tail);
1.422 raeburn 5573: $instcode = &unescape($instcode);
5574: $owner = &unescape($owner);
1.489.2.3 raeburn 5575: my ($outcome,$description,$credits) =
1.426 raeburn 5576: &localenroll::validate_instcode($dom,$instcode,$owner);
1.489.2.3 raeburn 5577: my $result = &escape($outcome).'&'.&escape($description).'&'.
5578: &escape($credits);
1.426 raeburn 5579: &Reply($client, \$result, $userinput);
1.417 raeburn 5580:
5581: return 1;
5582: }
5583: ®ister_handler("autovalidateinstcode", \&validate_instcode_handler, 0, 1, 0);
5584:
1.489.2.41 raeburn 5585: #
5586: # Validate co-owner for cross-listed institutional code and
5587: # institutional course code itself used for a LON-CAPA course.
5588: #
5589: # Formal Parameters:
5590: # $cmd - The command request that got us dispatched.
5591: # $tail - The tail of the command. In this case,
5592: # this is a colon separated string containing:
5593: # $dom - Course's LON-CAPA domain
5594: # $instcode - Institutional course code for the course
5595: # $inst_xlist - Institutional course Id for the crosslisting
5596: # $coowner - Username of co-owner
5597: # (values for all but $dom have been escaped).
5598: #
5599: # $client - Socket open on the client.
5600: # Returns:
5601: # 1 - Indicating processing should continue.
5602: #
5603: sub validate_instcrosslist_handler {
5604: my ($cmd, $tail, $client) = @_;
5605: my $userinput = "$cmd:$tail";
5606: my ($dom,$instcode,$inst_xlist,$coowner) = split(/:/,$tail);
5607: $instcode = &unescape($instcode);
5608: $inst_xlist = &unescape($inst_xlist);
5609: $coowner = &unescape($coowner);
5610: my $outcome = &localenroll::validate_crosslist_access($dom,$instcode,
5611: $inst_xlist,$coowner);
5612: &Reply($client, \$outcome, $userinput);
5613:
5614: return 1;
5615: }
5616: ®ister_handler("autovalidateinstcrosslist", \&validate_instcrosslist_handler, 0, 1, 0);
5617:
1.248 foxr 5618: # Get the official sections for which auto-enrollment is possible.
5619: # Since the admin people won't know about 'unofficial sections'
5620: # we cannot auto-enroll on them.
5621: # Formal Parameters:
5622: # $cmd - The command request that got us dispatched here.
5623: # $tail - The remainder of the request. In our case this
5624: # will be split into:
5625: # $coursecode - The course name from the admin point of view.
5626: # $cdom - The course's domain(?).
5627: # $client - Socket open on the client.
5628: # Returns:
5629: # 1 - Indiciting processing should continue.
5630: #
5631: sub get_sections_handler {
5632: my ($cmd, $tail, $client) = @_;
5633: my $userinput = "$cmd:$tail";
5634:
5635: my ($coursecode, $cdom) = split(/:/, $tail);
5636: my @secs = &localenroll::get_sections($coursecode,$cdom);
5637: my $seclist = &escape(join(':',@secs));
5638:
1.387 albertel 5639: &Reply($client, \$seclist, $userinput);
1.248 foxr 5640:
5641:
5642: return 1;
5643: }
5644: ®ister_handler("autogetsections", \&get_sections_handler, 0, 1, 0);
5645:
5646: # Validate the owner of a new course section.
5647: #
5648: # Formal Parameters:
5649: # $cmd - Command that got us dispatched.
5650: # $tail - the remainder of the command. For us this consists of a
5651: # colon separated string containing:
5652: # $inst - Course Id from the institutions point of view.
5653: # $owner - Proposed owner of the course.
5654: # $cdom - Domain of the course (from the institutions
5655: # point of view?)..
5656: # $client - Socket open on the client.
5657: #
5658: # Returns:
5659: # 1 - Processing should continue.
5660: #
5661: sub validate_course_owner_handler {
5662: my ($cmd, $tail, $client) = @_;
5663: my $userinput = "$cmd:$tail";
1.470 raeburn 5664: my ($inst_course_id, $owner, $cdom, $coowners) = split(/:/, $tail);
5665:
1.336 raeburn 5666: $owner = &unescape($owner);
1.470 raeburn 5667: $coowners = &unescape($coowners);
5668: my $outcome = &localenroll::new_course($inst_course_id,$owner,$cdom,$coowners);
1.387 albertel 5669: &Reply($client, \$outcome, $userinput);
1.248 foxr 5670:
5671:
5672:
5673: return 1;
5674: }
5675: ®ister_handler("autonewcourse", \&validate_course_owner_handler, 0, 1, 0);
1.263 albertel 5676:
1.248 foxr 5677: #
5678: # Validate a course section in the official schedule of classes
5679: # from the institutions point of view (part of autoenrollment).
5680: #
5681: # Formal Parameters:
5682: # $cmd - The command request that got us dispatched.
5683: # $tail - The tail of the command. In this case,
5684: # this is a colon separated set of words that will be split
5685: # into:
5686: # $inst_course_id - The course/section id from the
5687: # institutions point of view.
5688: # $cdom - The domain from the institutions
5689: # point of view.
5690: # $client - Socket open on the client.
5691: # Returns:
5692: # 1 - Indicating processing should continue.
5693: #
5694: sub validate_course_section_handler {
5695: my ($cmd, $tail, $client) = @_;
5696: my $userinput = "$cmd:$tail";
5697: my ($inst_course_id, $cdom) = split(/:/, $tail);
5698:
5699: my $outcome=&localenroll::validate_courseID($inst_course_id,$cdom);
1.387 albertel 5700: &Reply($client, \$outcome, $userinput);
1.248 foxr 5701:
5702:
5703: return 1;
5704: }
5705: ®ister_handler("autovalidatecourse", \&validate_course_section_handler, 0, 1, 0);
5706:
5707: #
1.340 raeburn 5708: # Validate course owner's access to enrollment data for specific class section.
5709: #
5710: #
5711: # Formal Parameters:
5712: # $cmd - The command request that got us dispatched.
5713: # $tail - The tail of the command. In this case this is a colon separated
1.489.2.29 raeburn 5714: # set of values that will be split into:
1.340 raeburn 5715: # $inst_class - Institutional code for the specific class section
1.489.2.29 raeburn 5716: # $ownerlist - An escaped comma-separated list of username:domain
5717: # of the course owner, and co-owner(s).
1.340 raeburn 5718: # $cdom - The domain of the course from the institution's
5719: # point of view.
5720: # $client - The socket open on the client.
5721: # Returns:
5722: # 1 - continue processing.
5723: #
5724:
5725: sub validate_class_access_handler {
5726: my ($cmd, $tail, $client) = @_;
5727: my $userinput = "$cmd:$tail";
1.383 raeburn 5728: my ($inst_class,$ownerlist,$cdom) = split(/:/, $tail);
1.392 raeburn 5729: my $owners = &unescape($ownerlist);
1.341 albertel 5730: my $outcome;
5731: eval {
5732: local($SIG{__DIE__})='DEFAULT';
1.392 raeburn 5733: $outcome=&localenroll::check_section($inst_class,$owners,$cdom);
1.341 albertel 5734: };
1.387 albertel 5735: &Reply($client,\$outcome, $userinput);
1.340 raeburn 5736:
5737: return 1;
5738: }
5739: ®ister_handler("autovalidateclass_sec", \&validate_class_access_handler, 0, 1, 0);
5740:
5741: #
1.489.2.41 raeburn 5742: # Modify institutional sections (using customized &instsec_reformat()
5743: # routine in localenroll.pm), to either clutter or declutter, for
5744: # purposes of ensuring an institutional course section (string) can
5745: # be unambiguously separated into institutional course and section.
5746: #
5747: # Formal Parameters:
5748: # $cmd - The command request that got us dispatched.
5749: # $tail - The tail of the command. In this case this is a colon separated
5750: # set of values that will be split into:
5751: # $cdom - The LON-CAPA domain of the course.
5752: # $action - Either: clutter or declutter
5753: # clutter adds character(s) to eliminate ambiguity
5754: # declutter removes the added characters (e.g., for
5755: # display of the institutional course section string.
5756: # $info - A frozen hash in which keys are:
5757: # LON-CAPA course number:Institutional course code
5758: # and values are a reference to an array of the
5759: # items to modify -- either institutional sections,
5760: # or institutional course sections (for crosslistings).
5761: # $client - The socket open on the client.
5762: # Returns:
5763: # 1 - continue processing.
5764: #
5765:
5766: sub instsec_reformat_handler {
5767: my ($cmd, $tail, $client) = @_;
5768: my $userinput = "$cmd:$tail";
5769: my ($cdom,$action,$info) = split(/:/,$tail);
5770: my $instsecref = &Apache::lonnet::thaw_unescape($info);
5771: my ($outcome,$result);
5772: eval {
5773: local($SIG{__DIE__})='DEFAULT';
5774: $outcome=&localenroll::instsec_reformat($cdom,$action,$instsecref);
5775: if ($outcome eq 'ok') {
5776: if (ref($instsecref) eq 'HASH') {
5777: foreach my $key (keys(%{$instsecref})) {
5778: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($instsecref->{$key}).'&';
5779: }
5780: $result =~ s/\&$//;
5781: }
5782: }
5783: };
5784: if (!$@) {
5785: if ($outcome eq 'ok') {
5786: &Reply( $client, \$result, $userinput);
5787: } else {
5788: &Reply($client,\$outcome, $userinput);
5789: }
5790: } else {
5791: &Failure($client,"unknown_cmd\n",$userinput);
5792: }
5793: return 1;
5794: }
5795: ®ister_handler("autoinstsecreformat",\&instsec_reformat_handler, 0, 1, 0);
5796:
5797: #
1.489.2.29 raeburn 5798: # Validate course owner or co-owners(s) access to enrollment data for all sections
5799: # and crosslistings for a particular course.
5800: #
5801: #
5802: # Formal Parameters:
5803: # $cmd - The command request that got us dispatched.
5804: # $tail - The tail of the command. In this case this is a colon separated
5805: # set of values that will be split into:
5806: # $ownerlist - An escaped comma-separated list of username:domain
5807: # of the course owner, and co-owner(s).
5808: # $cdom - The domain of the course from the institution's
5809: # point of view.
5810: # $classes - Frozen hash of institutional course sections and
5811: # crosslistings.
5812: # $client - The socket open on the client.
5813: # Returns:
5814: # 1 - continue processing.
5815: #
5816:
5817: sub validate_classes_handler {
5818: my ($cmd, $tail, $client) = @_;
5819: my $userinput = "$cmd:$tail";
5820: my ($ownerlist,$cdom,$classes) = split(/:/, $tail);
5821: my $classesref = &Apache::lonnet::thaw_unescape($classes);
5822: my $owners = &unescape($ownerlist);
5823: my $result;
5824: eval {
5825: local($SIG{__DIE__})='DEFAULT';
5826: my %validations;
5827: my $response = &localenroll::check_instclasses($owners,$cdom,$classesref,
5828: \%validations);
5829: if ($response eq 'ok') {
5830: foreach my $key (keys(%validations)) {
5831: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($validations{$key}).'&';
5832: }
5833: $result =~ s/\&$//;
5834: } else {
5835: $result = 'error';
5836: }
5837: };
5838: if (!$@) {
5839: &Reply($client, \$result, $userinput);
5840: } else {
5841: &Failure($client,"unknown_cmd\n",$userinput);
5842: }
5843: return 1;
5844: }
5845: ®ister_handler("autovalidateinstclasses", \&validate_classes_handler, 0, 1, 0);
5846:
5847: #
1.340 raeburn 5848: # Create a password for a new LON-CAPA user added by auto-enrollment.
5849: # Only used for case where authentication method for new user is localauth
1.248 foxr 5850: #
5851: # Formal Parameters:
5852: # $cmd - The command request that got us dispatched.
5853: # $tail - The tail of the command. In this case this is a colon separated
5854: # set of words that will be split into:
1.340 raeburn 5855: # $authparam - An authentication parameter (localauth parameter).
1.248 foxr 5856: # $cdom - The domain of the course from the institution's
5857: # point of view.
5858: # $client - The socket open on the client.
5859: # Returns:
5860: # 1 - continue processing.
5861: #
5862: sub create_auto_enroll_password_handler {
5863: my ($cmd, $tail, $client) = @_;
5864: my $userinput = "$cmd:$tail";
5865:
5866: my ($authparam, $cdom) = split(/:/, $userinput);
5867:
5868: my ($create_passwd,$authchk);
5869: ($authparam,
5870: $create_passwd,
5871: $authchk) = &localenroll::create_password($authparam,$cdom);
5872:
5873: &Reply($client, &escape($authparam.':'.$create_passwd.':'.$authchk)."\n",
5874: $userinput);
5875:
5876:
5877: return 1;
5878: }
5879: ®ister_handler("autocreatepassword", \&create_auto_enroll_password_handler,
5880: 0, 1, 0);
5881:
1.489.2.22 raeburn 5882: sub auto_export_grades_handler {
5883: my ($cmd, $tail, $client) = @_;
5884: my $userinput = "$cmd:$tail";
5885: my ($cdom,$cnum,$info,$data) = split(/:/,$tail);
5886: my $inforef = &Apache::lonnet::thaw_unescape($info);
5887: my $dataref = &Apache::lonnet::thaw_unescape($data);
5888: my ($outcome,$result);;
5889: eval {
5890: local($SIG{__DIE__})='DEFAULT';
5891: my %rtnhash;
5892: $outcome=&localenroll::export_grades($cdom,$cnum,$inforef,$dataref,\%rtnhash);
5893: if ($outcome eq 'ok') {
5894: foreach my $key (keys(%rtnhash)) {
5895: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($rtnhash{$key}).'&';
5896: }
5897: $result =~ s/\&$//;
5898: }
5899: };
5900: if (!$@) {
5901: if ($outcome eq 'ok') {
5902: if ($cipher) {
5903: my $cmdlength=length($result);
5904: $result.=" ";
5905: my $encresult='';
5906: for (my $encidx=0;$encidx<=$cmdlength;$encidx+=8) {
5907: $encresult.= unpack("H16",
5908: $cipher->encrypt(substr($result,
5909: $encidx,
5910: 8)));
5911: }
5912: &Reply( $client, "enc:$cmdlength:$encresult\n", $userinput);
5913: } else {
5914: &Failure( $client, "error:no_key\n", $userinput);
5915: }
5916: } else {
5917: &Reply($client, "$outcome\n", $userinput);
5918: }
5919: } else {
5920: &Failure($client,"export_error\n",$userinput);
5921: }
5922: return 1;
5923: }
5924: ®ister_handler("autoexportgrades", \&auto_export_grades_handler,
1.489.2.35 raeburn 5925: 1, 1, 0);
1.489.2.22 raeburn 5926:
5927:
1.248 foxr 5928: # Retrieve and remove temporary files created by/during autoenrollment.
5929: #
5930: # Formal Parameters:
5931: # $cmd - The command that got us dispatched.
5932: # $tail - The tail of the command. In our case this is a colon
5933: # separated list that will be split into:
1.489.2.24 raeburn 5934: # $filename - The name of the file to retrieve.
1.248 foxr 5935: # The filename is given as a path relative to
5936: # the LonCAPA temp file directory.
5937: # $client - Socket open on the client.
5938: #
5939: # Returns:
5940: # 1 - Continue processing.
5941: sub retrieve_auto_file_handler {
5942: my ($cmd, $tail, $client) = @_;
5943: my $userinput = "cmd:$tail";
5944:
5945: my ($filename) = split(/:/, $tail);
5946:
5947: my $source = $perlvar{'lonDaemons'}.'/tmp/'.$filename;
1.489.2.20 raeburn 5948: if ($filename =~m{/\.\./}) {
5949: &Failure($client, "refused\n", $userinput);
1.489.2.24 raeburn 5950: } elsif ($filename !~ /^$LONCAPA::match_domain\_$LONCAPA::match_courseid\_.+_classlist\.xml$/) {
5951: &Failure($client, "refused\n", $userinput);
1.489.2.20 raeburn 5952: } elsif ( (-e $source) && ($filename ne '') ) {
1.248 foxr 5953: my $reply = '';
5954: if (open(my $fh,$source)) {
5955: while (<$fh>) {
5956: chomp($_);
5957: $_ =~ s/^\s+//g;
5958: $_ =~ s/\s+$//g;
5959: $reply .= $_;
5960: }
5961: close($fh);
5962: &Reply($client, &escape($reply)."\n", $userinput);
5963:
5964: # Does this have to be uncommented??!? (RF).
5965: #
5966: # unlink($source);
5967: } else {
5968: &Failure($client, "error\n", $userinput);
5969: }
5970: } else {
5971: &Failure($client, "error\n", $userinput);
5972: }
5973:
5974:
5975: return 1;
5976: }
5977: ®ister_handler("autoretrieve", \&retrieve_auto_file_handler, 0,1,0);
5978:
1.423 raeburn 5979: sub crsreq_checks_handler {
5980: my ($cmd, $tail, $client) = @_;
5981: my $userinput = "$cmd:$tail";
5982: my $dom = $tail;
5983: my $result;
1.489.2.12 raeburn 5984: my @reqtypes = ('official','unofficial','community','textbook');
1.423 raeburn 5985: eval {
5986: local($SIG{__DIE__})='DEFAULT';
5987: my %validations;
1.424 raeburn 5988: my $response = &localenroll::crsreq_checks($dom,\@reqtypes,
5989: \%validations);
1.423 raeburn 5990: if ($response eq 'ok') {
5991: foreach my $key (keys(%validations)) {
5992: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($validations{$key}).'&';
5993: }
5994: $result =~ s/\&$//;
5995: } else {
5996: $result = 'error';
5997: }
5998: };
5999: if (!$@) {
6000: &Reply($client, \$result, $userinput);
6001: } else {
6002: &Failure($client,"unknown_cmd\n",$userinput);
6003: }
6004: return 1;
6005: }
6006: ®ister_handler("autocrsreqchecks", \&crsreq_checks_handler, 0, 1, 0);
6007:
6008: sub validate_crsreq_handler {
6009: my ($cmd, $tail, $client) = @_;
6010: my $userinput = "$cmd:$tail";
1.489.2.13 raeburn 6011: my ($dom,$owner,$crstype,$inststatuslist,$instcode,$instseclist,$customdata) = split(/:/, $tail);
1.423 raeburn 6012: $instcode = &unescape($instcode);
6013: $owner = &unescape($owner);
6014: $crstype = &unescape($crstype);
6015: $inststatuslist = &unescape($inststatuslist);
6016: $instcode = &unescape($instcode);
6017: $instseclist = &unescape($instseclist);
1.489.2.13 raeburn 6018: my $custominfo = &Apache::lonnet::thaw_unescape($customdata);
1.423 raeburn 6019: my $outcome;
6020: eval {
6021: local($SIG{__DIE__})='DEFAULT';
6022: $outcome = &localenroll::validate_crsreq($dom,$owner,$crstype,
6023: $inststatuslist,$instcode,
1.489.2.13 raeburn 6024: $instseclist,$custominfo);
1.423 raeburn 6025: };
6026: if (!$@) {
6027: &Reply($client, \$outcome, $userinput);
6028: } else {
6029: &Failure($client,"unknown_cmd\n",$userinput);
6030: }
6031: return 1;
6032: }
6033: ®ister_handler("autocrsreqvalidation", \&validate_crsreq_handler, 0, 1, 0);
6034:
1.489.2.11 raeburn 6035: sub crsreq_update_handler {
6036: my ($cmd, $tail, $client) = @_;
6037: my $userinput = "$cmd:$tail";
1.489.2.14 raeburn 6038: my ($cdom,$cnum,$crstype,$action,$ownername,$ownerdomain,$fullname,$title,$code,
6039: $accessstart,$accessend,$infohashref) =
1.489.2.11 raeburn 6040: split(/:/, $tail);
6041: $crstype = &unescape($crstype);
6042: $action = &unescape($action);
6043: $ownername = &unescape($ownername);
6044: $ownerdomain = &unescape($ownerdomain);
6045: $fullname = &unescape($fullname);
6046: $title = &unescape($title);
6047: $code = &unescape($code);
1.489.2.14 raeburn 6048: $accessstart = &unescape($accessstart);
6049: $accessend = &unescape($accessend);
1.489.2.11 raeburn 6050: my $incoming = &Apache::lonnet::thaw_unescape($infohashref);
6051: my ($result,$outcome);
6052: eval {
6053: local($SIG{__DIE__})='DEFAULT';
6054: my %rtnhash;
6055: $outcome = &localenroll::crsreq_updates($cdom,$cnum,$crstype,$action,
6056: $ownername,$ownerdomain,$fullname,
1.489.2.14 raeburn 6057: $title,$code,$accessstart,$accessend,
6058: $incoming,\%rtnhash);
1.489.2.11 raeburn 6059: if ($outcome eq 'ok') {
1.489.2.18 raeburn 6060: my @posskeys = qw(createdweb createdmsg createdcustomized createdactions queuedweb queuedmsg formitems reviewweb validationjs onload javascript);
1.489.2.11 raeburn 6061: foreach my $key (keys(%rtnhash)) {
6062: if (grep(/^\Q$key\E/,@posskeys)) {
6063: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($rtnhash{$key}).'&';
6064: }
6065: }
6066: $result =~ s/\&$//;
6067: }
6068: };
6069: if (!$@) {
6070: if ($outcome eq 'ok') {
6071: &Reply($client, \$result, $userinput);
6072: } else {
6073: &Reply($client, "format_error\n", $userinput);
6074: }
6075: } else {
6076: &Failure($client,"unknown_cmd\n",$userinput);
6077: }
6078: return 1;
6079: }
6080: ®ister_handler("autocrsrequpdate", \&crsreq_update_handler, 0, 1, 0);
6081:
1.248 foxr 6082: #
6083: # Read and retrieve institutional code format (for support form).
6084: # Formal Parameters:
6085: # $cmd - Command that dispatched us.
6086: # $tail - Tail of the command. In this case it conatins
6087: # the course domain and the coursename.
6088: # $client - Socket open on the client.
6089: # Returns:
6090: # 1 - Continue processing.
6091: #
6092: sub get_institutional_code_format_handler {
6093: my ($cmd, $tail, $client) = @_;
6094: my $userinput = "$cmd:$tail";
6095:
6096: my $reply;
6097: my($cdom,$course) = split(/:/,$tail);
6098: my @pairs = split/\&/,$course;
6099: my %instcodes = ();
6100: my %codes = ();
6101: my @codetitles = ();
6102: my %cat_titles = ();
6103: my %cat_order = ();
6104: foreach (@pairs) {
6105: my ($key,$value) = split/=/,$_;
6106: $instcodes{&unescape($key)} = &unescape($value);
6107: }
6108: my $formatreply = &localenroll::instcode_format($cdom,
6109: \%instcodes,
6110: \%codes,
6111: \@codetitles,
6112: \%cat_titles,
6113: \%cat_order);
6114: if ($formatreply eq 'ok') {
1.365 albertel 6115: my $codes_str = &Apache::lonnet::hash2str(%codes);
6116: my $codetitles_str = &Apache::lonnet::array2str(@codetitles);
6117: my $cat_titles_str = &Apache::lonnet::hash2str(%cat_titles);
6118: my $cat_order_str = &Apache::lonnet::hash2str(%cat_order);
1.248 foxr 6119: &Reply($client,
6120: $codes_str.':'.$codetitles_str.':'.$cat_titles_str.':'
6121: .$cat_order_str."\n",
6122: $userinput);
6123: } else {
6124: # this else branch added by RF since if not ok, lonc will
6125: # hang waiting on reply until timeout.
6126: #
6127: &Reply($client, "format_error\n", $userinput);
6128: }
6129:
6130: return 1;
6131: }
1.265 albertel 6132: ®ister_handler("autoinstcodeformat",
6133: \&get_institutional_code_format_handler,0,1,0);
1.246 foxr 6134:
1.345 raeburn 6135: sub get_institutional_defaults_handler {
6136: my ($cmd, $tail, $client) = @_;
6137: my $userinput = "$cmd:$tail";
6138:
6139: my $dom = $tail;
6140: my %defaults_hash;
6141: my @code_order;
6142: my $outcome;
6143: eval {
6144: local($SIG{__DIE__})='DEFAULT';
6145: $outcome = &localenroll::instcode_defaults($dom,\%defaults_hash,
6146: \@code_order);
6147: };
6148: if (!$@) {
6149: if ($outcome eq 'ok') {
6150: my $result='';
6151: while (my ($key,$value) = each(%defaults_hash)) {
6152: $result.=&escape($key).'='.&escape($value).'&';
6153: }
6154: $result .= 'code_order='.&escape(join('&',@code_order));
1.387 albertel 6155: &Reply($client,\$result,$userinput);
1.345 raeburn 6156: } else {
6157: &Reply($client,"error\n", $userinput);
6158: }
6159: } else {
6160: &Failure($client,"unknown_cmd\n",$userinput);
6161: }
6162: }
6163: ®ister_handler("autoinstcodedefaults",
6164: \&get_institutional_defaults_handler,0,1,0);
6165:
1.416 raeburn 6166: sub get_possible_instcodes_handler {
6167: my ($cmd, $tail, $client) = @_;
6168: my $userinput = "$cmd:$tail";
6169:
6170: my $reply;
6171: my $cdom = $tail;
1.417 raeburn 6172: my (@codetitles,%cat_titles,%cat_order,@code_order);
1.416 raeburn 6173: my $formatreply = &localenroll::possible_instcodes($cdom,
6174: \@codetitles,
6175: \%cat_titles,
1.417 raeburn 6176: \%cat_order,
6177: \@code_order);
1.416 raeburn 6178: if ($formatreply eq 'ok') {
6179: my $result = join('&',map {&escape($_);} (@codetitles)).':';
1.417 raeburn 6180: $result .= join('&',map {&escape($_);} (@code_order)).':';
1.416 raeburn 6181: foreach my $key (keys(%cat_titles)) {
6182: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($cat_titles{$key}).'&';
6183: }
6184: $result =~ s/\&$//;
6185: $result .= ':';
6186: foreach my $key (keys(%cat_order)) {
6187: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($cat_order{$key}).'&';
6188: }
6189: $result =~ s/\&$//;
6190: &Reply($client,\$result,$userinput);
6191: } else {
6192: &Reply($client, "format_error\n", $userinput);
6193: }
6194: return 1;
6195: }
6196: ®ister_handler("autopossibleinstcodes",
6197: \&get_possible_instcodes_handler,0,1,0);
6198:
1.381 raeburn 6199: sub get_institutional_user_rules {
6200: my ($cmd, $tail, $client) = @_;
6201: my $userinput = "$cmd:$tail";
6202: my $dom = &unescape($tail);
6203: my (%rules_hash,@rules_order);
6204: my $outcome;
6205: eval {
6206: local($SIG{__DIE__})='DEFAULT';
6207: $outcome = &localenroll::username_rules($dom,\%rules_hash,\@rules_order);
6208: };
6209: if (!$@) {
6210: if ($outcome eq 'ok') {
6211: my $result;
6212: foreach my $key (keys(%rules_hash)) {
6213: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($rules_hash{$key}).'&';
6214: }
6215: $result =~ s/\&$//;
6216: $result .= ':';
6217: if (@rules_order > 0) {
6218: foreach my $item (@rules_order) {
6219: $result .= &escape($item).'&';
6220: }
6221: }
6222: $result =~ s/\&$//;
1.387 albertel 6223: &Reply($client,\$result,$userinput);
1.381 raeburn 6224: } else {
6225: &Reply($client,"error\n", $userinput);
6226: }
6227: } else {
6228: &Failure($client,"unknown_cmd\n",$userinput);
6229: }
6230: }
6231: ®ister_handler("instuserrules",\&get_institutional_user_rules,0,1,0);
6232:
1.389 raeburn 6233: sub get_institutional_id_rules {
6234: my ($cmd, $tail, $client) = @_;
6235: my $userinput = "$cmd:$tail";
6236: my $dom = &unescape($tail);
6237: my (%rules_hash,@rules_order);
6238: my $outcome;
6239: eval {
6240: local($SIG{__DIE__})='DEFAULT';
6241: $outcome = &localenroll::id_rules($dom,\%rules_hash,\@rules_order);
6242: };
6243: if (!$@) {
6244: if ($outcome eq 'ok') {
6245: my $result;
6246: foreach my $key (keys(%rules_hash)) {
6247: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($rules_hash{$key}).'&';
6248: }
6249: $result =~ s/\&$//;
6250: $result .= ':';
6251: if (@rules_order > 0) {
6252: foreach my $item (@rules_order) {
6253: $result .= &escape($item).'&';
6254: }
6255: }
6256: $result =~ s/\&$//;
6257: &Reply($client,\$result,$userinput);
6258: } else {
6259: &Reply($client,"error\n", $userinput);
6260: }
6261: } else {
6262: &Failure($client,"unknown_cmd\n",$userinput);
6263: }
6264: }
6265: ®ister_handler("instidrules",\&get_institutional_id_rules,0,1,0);
6266:
1.397 raeburn 6267: sub get_institutional_selfcreate_rules {
1.396 raeburn 6268: my ($cmd, $tail, $client) = @_;
6269: my $userinput = "$cmd:$tail";
6270: my $dom = &unescape($tail);
6271: my (%rules_hash,@rules_order);
6272: my $outcome;
6273: eval {
6274: local($SIG{__DIE__})='DEFAULT';
1.397 raeburn 6275: $outcome = &localenroll::selfcreate_rules($dom,\%rules_hash,\@rules_order);
1.396 raeburn 6276: };
6277: if (!$@) {
6278: if ($outcome eq 'ok') {
6279: my $result;
6280: foreach my $key (keys(%rules_hash)) {
6281: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($rules_hash{$key}).'&';
6282: }
6283: $result =~ s/\&$//;
6284: $result .= ':';
6285: if (@rules_order > 0) {
6286: foreach my $item (@rules_order) {
6287: $result .= &escape($item).'&';
6288: }
6289: }
6290: $result =~ s/\&$//;
6291: &Reply($client,\$result,$userinput);
6292: } else {
6293: &Reply($client,"error\n", $userinput);
6294: }
6295: } else {
6296: &Failure($client,"unknown_cmd\n",$userinput);
6297: }
6298: }
1.397 raeburn 6299: ®ister_handler("instemailrules",\&get_institutional_selfcreate_rules,0,1,0);
1.396 raeburn 6300:
1.381 raeburn 6301:
6302: sub institutional_username_check {
6303: my ($cmd, $tail, $client) = @_;
6304: my $userinput = "$cmd:$tail";
6305: my %rulecheck;
6306: my $outcome;
6307: my ($udom,$uname,@rules) = split(/:/,$tail);
6308: $udom = &unescape($udom);
6309: $uname = &unescape($uname);
6310: @rules = map {&unescape($_);} (@rules);
6311: eval {
6312: local($SIG{__DIE__})='DEFAULT';
6313: $outcome = &localenroll::username_check($udom,$uname,\@rules,\%rulecheck);
6314: };
6315: if (!$@) {
6316: if ($outcome eq 'ok') {
6317: my $result='';
6318: foreach my $key (keys(%rulecheck)) {
6319: $result.=&escape($key).'='.&Apache::lonnet::freeze_escape($rulecheck{$key}).'&';
6320: }
1.387 albertel 6321: &Reply($client,\$result,$userinput);
1.381 raeburn 6322: } else {
6323: &Reply($client,"error\n", $userinput);
6324: }
6325: } else {
6326: &Failure($client,"unknown_cmd\n",$userinput);
6327: }
6328: }
6329: ®ister_handler("instrulecheck",\&institutional_username_check,0,1,0);
6330:
1.389 raeburn 6331: sub institutional_id_check {
6332: my ($cmd, $tail, $client) = @_;
6333: my $userinput = "$cmd:$tail";
6334: my %rulecheck;
6335: my $outcome;
6336: my ($udom,$id,@rules) = split(/:/,$tail);
6337: $udom = &unescape($udom);
6338: $id = &unescape($id);
6339: @rules = map {&unescape($_);} (@rules);
6340: eval {
6341: local($SIG{__DIE__})='DEFAULT';
6342: $outcome = &localenroll::id_check($udom,$id,\@rules,\%rulecheck);
6343: };
6344: if (!$@) {
6345: if ($outcome eq 'ok') {
6346: my $result='';
6347: foreach my $key (keys(%rulecheck)) {
6348: $result.=&escape($key).'='.&Apache::lonnet::freeze_escape($rulecheck{$key}).'&';
6349: }
6350: &Reply($client,\$result,$userinput);
6351: } else {
6352: &Reply($client,"error\n", $userinput);
6353: }
6354: } else {
6355: &Failure($client,"unknown_cmd\n",$userinput);
6356: }
6357: }
6358: ®ister_handler("instidrulecheck",\&institutional_id_check,0,1,0);
1.345 raeburn 6359:
1.397 raeburn 6360: sub institutional_selfcreate_check {
1.396 raeburn 6361: my ($cmd, $tail, $client) = @_;
6362: my $userinput = "$cmd:$tail";
6363: my %rulecheck;
6364: my $outcome;
6365: my ($udom,$email,@rules) = split(/:/,$tail);
6366: $udom = &unescape($udom);
6367: $email = &unescape($email);
6368: @rules = map {&unescape($_);} (@rules);
6369: eval {
6370: local($SIG{__DIE__})='DEFAULT';
1.397 raeburn 6371: $outcome = &localenroll::selfcreate_check($udom,$email,\@rules,\%rulecheck);
1.396 raeburn 6372: };
6373: if (!$@) {
6374: if ($outcome eq 'ok') {
6375: my $result='';
6376: foreach my $key (keys(%rulecheck)) {
6377: $result.=&escape($key).'='.&Apache::lonnet::freeze_escape($rulecheck{$key}).'&';
6378: }
6379: &Reply($client,\$result,$userinput);
6380: } else {
6381: &Reply($client,"error\n", $userinput);
6382: }
6383: } else {
6384: &Failure($client,"unknown_cmd\n",$userinput);
6385: }
6386: }
1.397 raeburn 6387: ®ister_handler("instselfcreatecheck",\&institutional_selfcreate_check,0,1,0);
1.396 raeburn 6388:
1.317 raeburn 6389: # Get domain specific conditions for import of student photographs to a course
6390: #
6391: # Retrieves information from photo_permission subroutine in localenroll.
6392: # Returns outcome (ok) if no processing errors, and whether course owner is
6393: # required to accept conditions of use (yes/no).
6394: #
6395: #
6396: sub photo_permission_handler {
6397: my ($cmd, $tail, $client) = @_;
6398: my $userinput = "$cmd:$tail";
6399: my $cdom = $tail;
6400: my ($perm_reqd,$conditions);
1.320 albertel 6401: my $outcome;
6402: eval {
6403: local($SIG{__DIE__})='DEFAULT';
6404: $outcome = &localenroll::photo_permission($cdom,\$perm_reqd,
6405: \$conditions);
6406: };
6407: if (!$@) {
6408: &Reply($client, &escape($outcome.':'.$perm_reqd.':'. $conditions)."\n",
6409: $userinput);
6410: } else {
6411: &Failure($client,"unknown_cmd\n",$userinput);
6412: }
6413: return 1;
1.317 raeburn 6414: }
6415: ®ister_handler("autophotopermission",\&photo_permission_handler,0,1,0);
6416:
6417: #
6418: # Checks if student photo is available for a user in the domain, in the user's
6419: # directory (in /userfiles/internal/studentphoto.jpg).
6420: # Uses localstudentphoto:fetch() to ensure there is an up to date copy of
6421: # the student's photo.
6422:
6423: sub photo_check_handler {
6424: my ($cmd, $tail, $client) = @_;
6425: my $userinput = "$cmd:$tail";
6426: my ($udom,$uname,$pid) = split(/:/,$tail);
6427: $udom = &unescape($udom);
6428: $uname = &unescape($uname);
6429: $pid = &unescape($pid);
6430: my $path=&propath($udom,$uname).'/userfiles/internal/';
6431: if (!-e $path) {
6432: &mkpath($path);
6433: }
6434: my $response;
6435: my $result = &localstudentphoto::fetch($udom,$uname,$pid,\$response);
6436: $result .= ':'.$response;
6437: &Reply($client, &escape($result)."\n",$userinput);
1.320 albertel 6438: return 1;
1.317 raeburn 6439: }
6440: ®ister_handler("autophotocheck",\&photo_check_handler,0,1,0);
6441:
6442: #
6443: # Retrieve information from localenroll about whether to provide a button
6444: # for users who have enbled import of student photos to initiate an
6445: # update of photo files for registered students. Also include
6446: # comment to display alongside button.
6447:
6448: sub photo_choice_handler {
6449: my ($cmd, $tail, $client) = @_;
6450: my $userinput = "$cmd:$tail";
6451: my $cdom = &unescape($tail);
1.320 albertel 6452: my ($update,$comment);
6453: eval {
6454: local($SIG{__DIE__})='DEFAULT';
6455: ($update,$comment) = &localenroll::manager_photo_update($cdom);
6456: };
6457: if (!$@) {
6458: &Reply($client,&escape($update).':'.&escape($comment)."\n",$userinput);
6459: } else {
6460: &Failure($client,"unknown_cmd\n",$userinput);
6461: }
6462: return 1;
1.317 raeburn 6463: }
6464: ®ister_handler("autophotochoice",\&photo_choice_handler,0,1,0);
6465:
1.265 albertel 6466: #
6467: # Gets a student's photo to exist (in the correct image type) in the user's
6468: # directory.
6469: # Formal Parameters:
6470: # $cmd - The command request that got us dispatched.
6471: # $tail - A colon separated set of words that will be split into:
6472: # $domain - student's domain
6473: # $uname - student username
6474: # $type - image type desired
6475: # $client - The socket open on the client.
6476: # Returns:
6477: # 1 - continue processing.
1.317 raeburn 6478:
1.265 albertel 6479: sub student_photo_handler {
6480: my ($cmd, $tail, $client) = @_;
1.317 raeburn 6481: my ($domain,$uname,$ext,$type) = split(/:/, $tail);
1.265 albertel 6482:
1.317 raeburn 6483: my $path=&propath($domain,$uname). '/userfiles/internal/';
6484: my $filename = 'studentphoto.'.$ext;
6485: if ($type eq 'thumbnail') {
6486: $filename = 'studentphoto_tn.'.$ext;
6487: }
6488: if (-e $path.$filename) {
1.265 albertel 6489: &Reply($client,"ok\n","$cmd:$tail");
6490: return 1;
6491: }
6492: &mkpath($path);
1.317 raeburn 6493: my $file;
6494: if ($type eq 'thumbnail') {
1.320 albertel 6495: eval {
6496: local($SIG{__DIE__})='DEFAULT';
6497: $file=&localstudentphoto::fetch_thumbnail($domain,$uname);
6498: };
1.317 raeburn 6499: } else {
6500: $file=&localstudentphoto::fetch($domain,$uname);
6501: }
1.265 albertel 6502: if (!$file) {
6503: &Failure($client,"unavailable\n","$cmd:$tail");
6504: return 1;
6505: }
1.317 raeburn 6506: if (!-e $path.$filename) { &convert_photo($file,$path.$filename); }
6507: if (-e $path.$filename) {
1.265 albertel 6508: &Reply($client,"ok\n","$cmd:$tail");
6509: return 1;
6510: }
6511: &Failure($client,"unable_to_convert\n","$cmd:$tail");
6512: return 1;
6513: }
6514: ®ister_handler("studentphoto", \&student_photo_handler, 0, 1, 0);
1.246 foxr 6515:
1.361 raeburn 6516: sub inst_usertypes_handler {
6517: my ($cmd, $domain, $client) = @_;
6518: my $res;
6519: my $userinput = $cmd.":".$domain; # For logging purposes.
1.370 albertel 6520: my (%typeshash,@order,$result);
6521: eval {
6522: local($SIG{__DIE__})='DEFAULT';
6523: $result=&localenroll::inst_usertypes($domain,\%typeshash,\@order);
6524: };
6525: if ($result eq 'ok') {
1.361 raeburn 6526: if (keys(%typeshash) > 0) {
6527: foreach my $key (keys(%typeshash)) {
6528: $res.=&escape($key).'='.&escape($typeshash{$key}).'&';
6529: }
6530: }
6531: $res=~s/\&$//;
6532: $res .= ':';
6533: if (@order > 0) {
6534: foreach my $item (@order) {
6535: $res .= &escape($item).'&';
6536: }
6537: }
6538: $res=~s/\&$//;
6539: }
1.387 albertel 6540: &Reply($client, \$res, $userinput);
1.361 raeburn 6541: return 1;
6542: }
6543: ®ister_handler("inst_usertypes", \&inst_usertypes_handler, 0, 1, 0);
6544:
1.264 albertel 6545: # mkpath makes all directories for a file, expects an absolute path with a
6546: # file or a trailing / if just a dir is passed
6547: # returns 1 on success 0 on failure
6548: sub mkpath {
6549: my ($file)=@_;
6550: my @parts=split(/\//,$file,-1);
6551: my $now=$parts[0].'/'.$parts[1].'/'.$parts[2];
6552: for (my $i=3;$i<= ($#parts-1);$i++) {
1.265 albertel 6553: $now.='/'.$parts[$i];
1.264 albertel 6554: if (!-e $now) {
6555: if (!mkdir($now,0770)) { return 0; }
6556: }
6557: }
6558: return 1;
6559: }
6560:
1.207 foxr 6561: #---------------------------------------------------------------
6562: #
6563: # Getting, decoding and dispatching requests:
6564: #
6565: #
6566: # Get a Request:
6567: # Gets a Request message from the client. The transaction
6568: # is defined as a 'line' of text. We remove the new line
6569: # from the text line.
1.226 foxr 6570: #
1.211 albertel 6571: sub get_request {
1.207 foxr 6572: my $input = <$client>;
6573: chomp($input);
1.226 foxr 6574:
1.234 foxr 6575: &Debug("get_request: Request = $input\n");
1.207 foxr 6576:
6577: &status('Processing '.$clientname.':'.$input);
6578:
6579: return $input;
6580: }
1.212 foxr 6581: #---------------------------------------------------------------
6582: #
6583: # Process a request. This sub should shrink as each action
6584: # gets farmed out into a separat sub that is registered
6585: # with the dispatch hash.
6586: #
6587: # Parameters:
6588: # user_input - The request received from the client (lonc).
6589: # Returns:
6590: # true to keep processing, false if caller should exit.
6591: #
6592: sub process_request {
6593: my ($userinput) = @_; # Easier for now to break style than to
6594: # fix all the userinput -> user_input.
6595: my $wasenc = 0; # True if request was encrypted.
6596: # ------------------------------------------------------------ See if encrypted
1.322 albertel 6597: # for command
6598: # sethost:<server>
6599: # <command>:<args>
6600: # we just send it to the processor
6601: # for
6602: # sethost:<server>:<command>:<args>
6603: # we do the implict set host and then do the command
6604: if ($userinput =~ /^sethost:/) {
6605: (my $cmd,my $newid,$userinput) = split(':',$userinput,3);
6606: if (defined($userinput)) {
6607: &sethost("$cmd:$newid");
6608: } else {
6609: $userinput = "$cmd:$newid";
6610: }
6611: }
6612:
1.212 foxr 6613: if ($userinput =~ /^enc/) {
6614: $userinput = decipher($userinput);
6615: $wasenc=1;
6616: if(!$userinput) { # Cipher not defined.
1.251 foxr 6617: &Failure($client, "error: Encrypted data without negotated key\n");
1.212 foxr 6618: return 0;
6619: }
6620: }
6621: Debug("process_request: $userinput\n");
6622:
1.213 foxr 6623: #
6624: # The 'correct way' to add a command to lond is now to
6625: # write a sub to execute it and Add it to the command dispatch
6626: # hash via a call to register_handler.. The comments to that
6627: # sub should give you enough to go on to show how to do this
6628: # along with the examples that are building up as this code
6629: # is getting refactored. Until all branches of the
6630: # if/elseif monster below have been factored out into
6631: # separate procesor subs, if the dispatch hash is missing
6632: # the command keyword, we will fall through to the remainder
6633: # of the if/else chain below in order to keep this thing in
6634: # working order throughout the transmogrification.
6635:
6636: my ($command, $tail) = split(/:/, $userinput, 2);
6637: chomp($command);
6638: chomp($tail);
6639: $tail =~ s/(\r)//; # This helps people debugging with e.g. telnet.
1.214 foxr 6640: $command =~ s/(\r)//; # And this too for parameterless commands.
6641: if(!$tail) {
6642: $tail =""; # defined but blank.
6643: }
1.213 foxr 6644:
6645: &Debug("Command received: $command, encoded = $wasenc");
6646:
6647: if(defined $Dispatcher{$command}) {
6648:
6649: my $dispatch_info = $Dispatcher{$command};
6650: my $handler = $$dispatch_info[0];
6651: my $need_encode = $$dispatch_info[1];
6652: my $client_types = $$dispatch_info[2];
6653: Debug("Matched dispatch hash: mustencode: $need_encode "
6654: ."ClientType $client_types");
6655:
6656: # Validate the request:
6657:
6658: my $ok = 1;
6659: my $requesterprivs = 0;
6660: if(&isClient()) {
6661: $requesterprivs |= $CLIENT_OK;
6662: }
6663: if(&isManager()) {
6664: $requesterprivs |= $MANAGER_OK;
6665: }
6666: if($need_encode && (!$wasenc)) {
6667: Debug("Must encode but wasn't: $need_encode $wasenc");
6668: $ok = 0;
6669: }
6670: if(($client_types & $requesterprivs) == 0) {
6671: Debug("Client not privileged to do this operation");
6672: $ok = 0;
6673: }
6674:
6675: if($ok) {
6676: Debug("Dispatching to handler $command $tail");
6677: my $keep_going = &$handler($command, $tail, $client);
6678: return $keep_going;
6679: } else {
6680: Debug("Refusing to dispatch because client did not match requirements");
6681: Failure($client, "refused\n", $userinput);
6682: return 1;
6683: }
6684:
6685: }
6686:
1.262 foxr 6687: print $client "unknown_cmd\n";
1.212 foxr 6688: # -------------------------------------------------------------------- complete
6689: Debug("process_request - returning 1");
6690: return 1;
6691: }
1.207 foxr 6692: #
6693: # Decipher encoded traffic
6694: # Parameters:
6695: # input - Encoded data.
6696: # Returns:
6697: # Decoded data or undef if encryption key was not yet negotiated.
6698: # Implicit input:
6699: # cipher - This global holds the negotiated encryption key.
6700: #
1.211 albertel 6701: sub decipher {
1.207 foxr 6702: my ($input) = @_;
6703: my $output = '';
1.212 foxr 6704:
6705:
1.207 foxr 6706: if($cipher) {
6707: my($enc, $enclength, $encinput) = split(/:/, $input);
6708: for(my $encidx = 0; $encidx < length($encinput); $encidx += 16) {
6709: $output .=
6710: $cipher->decrypt(pack("H16", substr($encinput, $encidx, 16)));
6711: }
6712: return substr($output, 0, $enclength);
6713: } else {
6714: return undef;
6715: }
6716: }
6717:
6718: #
6719: # Register a command processor. This function is invoked to register a sub
6720: # to process a request. Once registered, the ProcessRequest sub can automatically
6721: # dispatch requests to an appropriate sub, and do the top level validity checking
6722: # as well:
6723: # - Is the keyword recognized.
6724: # - Is the proper client type attempting the request.
6725: # - Is the request encrypted if it has to be.
6726: # Parameters:
6727: # $request_name - Name of the request being registered.
6728: # This is the command request that will match
6729: # against the hash keywords to lookup the information
6730: # associated with the dispatch information.
6731: # $procedure - Reference to a sub to call to process the request.
6732: # All subs get called as follows:
6733: # Procedure($cmd, $tail, $replyfd, $key)
6734: # $cmd - the actual keyword that invoked us.
6735: # $tail - the tail of the request that invoked us.
6736: # $replyfd- File descriptor connected to the client
6737: # $must_encode - True if the request must be encoded to be good.
6738: # $client_ok - True if it's ok for a client to request this.
6739: # $manager_ok - True if it's ok for a manager to request this.
6740: # Side effects:
6741: # - On success, the Dispatcher hash has an entry added for the key $RequestName
6742: # - On failure, the program will die as it's a bad internal bug to try to
6743: # register a duplicate command handler.
6744: #
1.211 albertel 6745: sub register_handler {
1.212 foxr 6746: my ($request_name,$procedure,$must_encode, $client_ok,$manager_ok) = @_;
1.207 foxr 6747:
6748: # Don't allow duplication#
6749:
6750: if (defined $Dispatcher{$request_name}) {
6751: die "Attempting to define a duplicate request handler for $request_name\n";
6752: }
6753: # Build the client type mask:
6754:
6755: my $client_type_mask = 0;
6756: if($client_ok) {
6757: $client_type_mask |= $CLIENT_OK;
6758: }
6759: if($manager_ok) {
6760: $client_type_mask |= $MANAGER_OK;
6761: }
6762:
6763: # Enter the hash:
6764:
6765: my @entry = ($procedure, $must_encode, $client_type_mask);
6766:
6767: $Dispatcher{$request_name} = \@entry;
6768:
6769: }
6770:
6771:
6772: #------------------------------------------------------------------
6773:
6774:
6775:
6776:
1.141 foxr 6777: #
1.96 foxr 6778: # Convert an error return code from lcpasswd to a string value.
6779: #
6780: sub lcpasswdstrerror {
6781: my $ErrorCode = shift;
1.97 foxr 6782: if(($ErrorCode < 0) || ($ErrorCode > $lastpwderror)) {
1.96 foxr 6783: return "lcpasswd Unrecognized error return value ".$ErrorCode;
6784: } else {
1.98 foxr 6785: return $passwderrors[$ErrorCode];
1.96 foxr 6786: }
6787: }
6788:
1.23 harris41 6789: # grabs exception and records it to log before exiting
6790: sub catchexception {
1.27 albertel 6791: my ($error)=@_;
1.25 www 6792: $SIG{'QUIT'}='DEFAULT';
6793: $SIG{__DIE__}='DEFAULT';
1.165 albertel 6794: &status("Catching exception");
1.190 albertel 6795: &logthis("<font color='red'>CRITICAL: "
1.373 albertel 6796: ."ABNORMAL EXIT. Child $$ for server ".$perlvar{'lonHostID'}." died through "
1.27 albertel 6797: ."a crash with this error msg->[$error]</font>");
1.57 www 6798: &logthis('Famous last words: '.$status.' - '.$lastlog);
1.27 albertel 6799: if ($client) { print $client "error: $error\n"; }
1.59 www 6800: $server->close();
1.27 albertel 6801: die($error);
1.23 harris41 6802: }
1.63 www 6803: sub timeout {
1.165 albertel 6804: &status("Handling Timeout");
1.190 albertel 6805: &logthis("<font color='red'>CRITICAL: TIME OUT ".$$."</font>");
1.63 www 6806: &catchexception('Timeout');
6807: }
1.22 harris41 6808: # -------------------------------- Set signal handlers to record abnormal exits
6809:
1.226 foxr 6810:
1.22 harris41 6811: $SIG{'QUIT'}=\&catchexception;
6812: $SIG{__DIE__}=\&catchexception;
6813:
1.81 matthew 6814: # ---------------------------------- Read loncapa_apache.conf and loncapa.conf
1.95 harris41 6815: &status("Read loncapa.conf and loncapa_apache.conf");
6816: my $perlvarref=LONCAPA::Configuration::read_conf('loncapa.conf');
1.141 foxr 6817: %perlvar=%{$perlvarref};
1.80 harris41 6818: undef $perlvarref;
1.19 www 6819:
1.35 harris41 6820: # ----------------------------- Make sure this process is running from user=www
6821: my $wwwid=getpwnam('www');
6822: if ($wwwid!=$<) {
1.134 albertel 6823: my $emailto="$perlvar{'lonAdmEMail'},$perlvar{'lonSysEMail'}";
6824: my $subj="LON: $currenthostid User ID mismatch";
1.489.2.31 raeburn 6825: system("echo 'User ID mismatch. lond must be run as user www.' |".
6826: " mail -s '$subj' $emailto > /dev/null");
1.35 harris41 6827: exit 1;
6828: }
6829:
1.19 www 6830: # --------------------------------------------- Check if other instance running
6831:
6832: my $pidfile="$perlvar{'lonDaemons'}/logs/lond.pid";
6833:
6834: if (-e $pidfile) {
6835: my $lfh=IO::File->new("$pidfile");
6836: my $pide=<$lfh>;
6837: chomp($pide);
1.29 harris41 6838: if (kill 0 => $pide) { die "already running"; }
1.19 www 6839: }
1.1 albertel 6840:
6841: # ------------------------------------------------------------- Read hosts file
6842:
6843:
6844:
6845: # establish SERVER socket, bind and listen.
6846: $server = IO::Socket::INET->new(LocalPort => $perlvar{'londPort'},
6847: Type => SOCK_STREAM,
6848: Proto => 'tcp',
1.469 foxr 6849: ReuseAddr => 1,
1.1 albertel 6850: Listen => 10 )
1.29 harris41 6851: or die "making socket: $@\n";
1.1 albertel 6852:
6853: # --------------------------------------------------------- Do global variables
6854:
6855: # global variables
6856:
1.134 albertel 6857: my %children = (); # keys are current child process IDs
1.1 albertel 6858:
6859: sub REAPER { # takes care of dead children
6860: $SIG{CHLD} = \&REAPER;
1.165 albertel 6861: &status("Handling child death");
1.178 foxr 6862: my $pid;
6863: do {
6864: $pid = waitpid(-1,&WNOHANG());
6865: if (defined($children{$pid})) {
6866: &logthis("Child $pid died");
6867: delete($children{$pid});
1.183 albertel 6868: } elsif ($pid > 0) {
1.178 foxr 6869: &logthis("Unknown Child $pid died");
6870: }
6871: } while ( $pid > 0 );
6872: foreach my $child (keys(%children)) {
6873: $pid = waitpid($child,&WNOHANG());
6874: if ($pid > 0) {
6875: &logthis("Child $child - $pid looks like we missed it's death");
6876: delete($children{$pid});
6877: }
1.176 albertel 6878: }
1.165 albertel 6879: &status("Finished Handling child death");
1.1 albertel 6880: }
6881:
6882: sub HUNTSMAN { # signal handler for SIGINT
1.165 albertel 6883: &status("Killing children (INT)");
1.1 albertel 6884: local($SIG{CHLD}) = 'IGNORE'; # we're going to kill our children
6885: kill 'INT' => keys %children;
1.59 www 6886: &logthis("Free socket: ".shutdown($server,2)); # free up socket
1.1 albertel 6887: my $execdir=$perlvar{'lonDaemons'};
6888: unlink("$execdir/logs/lond.pid");
1.190 albertel 6889: &logthis("<font color='red'>CRITICAL: Shutting down</font>");
1.165 albertel 6890: &status("Done killing children");
1.1 albertel 6891: exit; # clean up with dignity
6892: }
6893:
6894: sub HUPSMAN { # signal handler for SIGHUP
6895: local($SIG{CHLD}) = 'IGNORE'; # we're going to kill our children
1.165 albertel 6896: &status("Killing children for restart (HUP)");
1.1 albertel 6897: kill 'INT' => keys %children;
1.59 www 6898: &logthis("Free socket: ".shutdown($server,2)); # free up socket
1.190 albertel 6899: &logthis("<font color='red'>CRITICAL: Restarting</font>");
1.134 albertel 6900: my $execdir=$perlvar{'lonDaemons'};
1.30 harris41 6901: unlink("$execdir/logs/lond.pid");
1.165 albertel 6902: &status("Restarting self (HUP)");
1.1 albertel 6903: exec("$execdir/lond"); # here we go again
6904: }
6905:
1.144 foxr 6906: #
1.148 foxr 6907: # Reload the Apache daemon's state.
1.150 foxr 6908: # This is done by invoking /home/httpd/perl/apachereload
6909: # a setuid perl script that can be root for us to do this job.
1.148 foxr 6910: #
6911: sub ReloadApache {
1.473 raeburn 6912: # --------------------------- Handle case of another apachereload process (locking)
1.474 raeburn 6913: if (&LONCAPA::try_to_lock('/tmp/lock_apachereload')) {
6914: my $execdir = $perlvar{'lonDaemons'};
6915: my $script = $execdir."/apachereload";
6916: system($script);
6917: unlink('/tmp/lock_apachereload'); # Remove the lock file.
6918: }
1.148 foxr 6919: }
6920:
6921: #
1.144 foxr 6922: # Called in response to a USR2 signal.
6923: # - Reread hosts.tab
6924: # - All children connected to hosts that were removed from hosts.tab
6925: # are killed via SIGINT
6926: # - All children connected to previously existing hosts are sent SIGUSR1
6927: # - Our internal hosts hash is updated to reflect the new contents of
6928: # hosts.tab causing connections from hosts added to hosts.tab to
6929: # now be honored.
6930: #
6931: sub UpdateHosts {
1.165 albertel 6932: &status("Reload hosts.tab");
1.147 foxr 6933: logthis('<font color="blue"> Updating connections </font>');
1.148 foxr 6934: #
6935: # The %children hash has the set of IP's we currently have children
6936: # on. These need to be matched against records in the hosts.tab
6937: # Any ip's no longer in the table get killed off they correspond to
6938: # either dropped or changed hosts. Note that the re-read of the table
6939: # will take care of new and changed hosts as connections come into being.
6940:
1.371 albertel 6941: &Apache::lonnet::reset_hosts_info();
1.148 foxr 6942:
1.368 albertel 6943: foreach my $child (keys(%children)) {
1.148 foxr 6944: my $childip = $children{$child};
1.374 albertel 6945: if ($childip ne '127.0.0.1'
6946: && !defined(&Apache::lonnet::get_hosts_from_ip($childip))) {
1.149 foxr 6947: logthis('<font color="blue"> UpdateHosts killing child '
6948: ." $child for ip $childip </font>");
1.148 foxr 6949: kill('INT', $child);
1.149 foxr 6950: } else {
6951: logthis('<font color="green"> keeping child for ip '
6952: ." $childip (pid=$child) </font>");
1.148 foxr 6953: }
6954: }
6955: ReloadApache;
1.165 albertel 6956: &status("Finished reloading hosts.tab");
1.144 foxr 6957: }
6958:
1.148 foxr 6959:
1.57 www 6960: sub checkchildren {
1.165 albertel 6961: &status("Checking on the children (sending signals)");
1.57 www 6962: &initnewstatus();
6963: &logstatus();
6964: &logthis('Going to check on the children');
1.134 albertel 6965: my $docdir=$perlvar{'lonDocRoot'};
1.61 harris41 6966: foreach (sort keys %children) {
1.221 albertel 6967: #sleep 1;
1.57 www 6968: unless (kill 'USR1' => $_) {
6969: &logthis ('Child '.$_.' is dead');
6970: &logstatus($$.' is dead');
1.221 albertel 6971: delete($children{$_});
1.57 www 6972: }
1.61 harris41 6973: }
1.63 www 6974: sleep 5;
1.212 foxr 6975: $SIG{ALRM} = sub { Debug("timeout");
6976: die "timeout"; };
1.113 albertel 6977: $SIG{__DIE__} = 'DEFAULT';
1.165 albertel 6978: &status("Checking on the children (waiting for reports)");
1.63 www 6979: foreach (sort keys %children) {
6980: unless (-e "$docdir/lon-status/londchld/$_.txt") {
1.113 albertel 6981: eval {
6982: alarm(300);
1.63 www 6983: &logthis('Child '.$_.' did not respond');
1.67 albertel 6984: kill 9 => $_;
1.131 albertel 6985: #$emailto="$perlvar{'lonAdmEMail'},$perlvar{'lonSysEMail'}";
6986: #$subj="LON: $currenthostid killed lond process $_";
6987: #my $result=`echo 'Killed lond process $_.' | mailto $emailto -s '$subj' > /dev/null`;
6988: #$execdir=$perlvar{'lonDaemons'};
6989: #$result=`/bin/cp $execdir/logs/lond.log $execdir/logs/lond.log.$_`;
1.221 albertel 6990: delete($children{$_});
1.113 albertel 6991: alarm(0);
6992: }
1.63 www 6993: }
6994: }
1.113 albertel 6995: $SIG{ALRM} = 'DEFAULT';
1.155 albertel 6996: $SIG{__DIE__} = \&catchexception;
1.165 albertel 6997: &status("Finished checking children");
1.221 albertel 6998: &logthis('Finished Checking children');
1.57 www 6999: }
7000:
1.1 albertel 7001: # --------------------------------------------------------------------- Logging
7002:
7003: sub logthis {
7004: my $message=shift;
7005: my $execdir=$perlvar{'lonDaemons'};
7006: my $fh=IO::File->new(">>$execdir/logs/lond.log");
7007: my $now=time;
7008: my $local=localtime($now);
1.58 www 7009: $lastlog=$local.': '.$message;
1.1 albertel 7010: print $fh "$local ($$): $message\n";
7011: }
7012:
1.77 foxr 7013: # ------------------------- Conditional log if $DEBUG true.
7014: sub Debug {
7015: my $message = shift;
7016: if($DEBUG) {
7017: &logthis($message);
7018: }
7019: }
1.161 foxr 7020:
7021: #
7022: # Sub to do replies to client.. this gives a hook for some
7023: # debug tracing too:
7024: # Parameters:
7025: # fd - File open on client.
7026: # reply - Text to send to client.
7027: # request - Original request from client.
7028: #
7029: sub Reply {
1.192 foxr 7030: my ($fd, $reply, $request) = @_;
1.387 albertel 7031: if (ref($reply)) {
7032: print $fd $$reply;
7033: print $fd "\n";
7034: if ($DEBUG) { Debug("Request was $request Reply was $$reply"); }
7035: } else {
7036: print $fd $reply;
7037: if ($DEBUG) { Debug("Request was $request Reply was $reply"); }
7038: }
1.212 foxr 7039: $Transactions++;
7040: }
7041:
7042:
7043: #
7044: # Sub to report a failure.
7045: # This function:
7046: # - Increments the failure statistic counters.
7047: # - Invokes Reply to send the error message to the client.
7048: # Parameters:
7049: # fd - File descriptor open on the client
7050: # reply - Reply text to emit.
7051: # request - The original request message (used by Reply
7052: # to debug if that's enabled.
7053: # Implicit outputs:
7054: # $Failures- The number of failures is incremented.
7055: # Reply (invoked here) sends a message to the
7056: # client:
7057: #
7058: sub Failure {
7059: my $fd = shift;
7060: my $reply = shift;
7061: my $request = shift;
7062:
7063: $Failures++;
7064: Reply($fd, $reply, $request); # That's simple eh?
1.161 foxr 7065: }
1.57 www 7066: # ------------------------------------------------------------------ Log status
7067:
7068: sub logstatus {
1.178 foxr 7069: &status("Doing logging");
7070: my $docdir=$perlvar{'lonDocRoot'};
7071: {
7072: my $fh=IO::File->new(">$docdir/lon-status/londchld/$$.txt");
1.200 matthew 7073: print $fh $status."\n".$lastlog."\n".time."\n$keymode";
1.178 foxr 7074: $fh->close();
7075: }
1.221 albertel 7076: &status("Finished $$.txt");
7077: {
7078: open(LOG,">>$docdir/lon-status/londstatus.txt");
7079: flock(LOG,LOCK_EX);
7080: print LOG $$."\t".$clientname."\t".$currenthostid."\t"
7081: .$status."\t".$lastlog."\t $keymode\n";
1.275 albertel 7082: flock(LOG,LOCK_UN);
1.221 albertel 7083: close(LOG);
7084: }
1.178 foxr 7085: &status("Finished logging");
1.57 www 7086: }
7087:
7088: sub initnewstatus {
7089: my $docdir=$perlvar{'lonDocRoot'};
7090: my $fh=IO::File->new(">$docdir/lon-status/londstatus.txt");
1.460 foxr 7091: my $now=time();
1.57 www 7092: my $local=localtime($now);
7093: print $fh "LOND status $local - parent $$\n\n";
1.64 www 7094: opendir(DIR,"$docdir/lon-status/londchld");
1.134 albertel 7095: while (my $filename=readdir(DIR)) {
1.64 www 7096: unlink("$docdir/lon-status/londchld/$filename");
7097: }
7098: closedir(DIR);
1.57 www 7099: }
7100:
7101: # -------------------------------------------------------------- Status setting
7102:
7103: sub status {
7104: my $what=shift;
7105: my $now=time;
7106: my $local=localtime($now);
1.178 foxr 7107: $status=$local.': '.$what;
7108: $0='lond: '.$what.' '.$local;
1.57 www 7109: }
1.11 www 7110:
1.13 www 7111: # -------------------------------------------------------------- Talk to lonsql
7112:
1.234 foxr 7113: sub sql_reply {
1.12 harris41 7114: my ($cmd)=@_;
1.234 foxr 7115: my $answer=&sub_sql_reply($cmd);
7116: if ($answer eq 'con_lost') { $answer=&sub_sql_reply($cmd); }
1.12 harris41 7117: return $answer;
7118: }
7119:
1.234 foxr 7120: sub sub_sql_reply {
1.12 harris41 7121: my ($cmd)=@_;
7122: my $unixsock="mysqlsock";
7123: my $peerfile="$perlvar{'lonSockDir'}/$unixsock";
7124: my $sclient=IO::Socket::UNIX->new(Peer =>"$peerfile",
7125: Type => SOCK_STREAM,
7126: Timeout => 10)
7127: or return "con_lost";
1.319 www 7128: print $sclient "$cmd:$currentdomainid\n";
1.12 harris41 7129: my $answer=<$sclient>;
7130: chomp($answer);
7131: if (!$answer) { $answer="con_lost"; }
7132: return $answer;
7133: }
7134:
1.1 albertel 7135: # --------------------------------------- Is this the home server of an author?
1.11 www 7136:
1.1 albertel 7137: sub ishome {
7138: my $author=shift;
7139: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
7140: my ($udom,$uname)=split(/\//,$author);
7141: my $proname=propath($udom,$uname);
7142: if (-e $proname) {
7143: return 'owner';
7144: } else {
7145: return 'not_owner';
7146: }
7147: }
7148:
7149: # ======================================================= Continue main program
7150: # ---------------------------------------------------- Fork once and dissociate
7151:
1.134 albertel 7152: my $fpid=fork;
1.1 albertel 7153: exit if $fpid;
1.29 harris41 7154: die "Couldn't fork: $!" unless defined ($fpid);
1.1 albertel 7155:
1.29 harris41 7156: POSIX::setsid() or die "Can't start new session: $!";
1.1 albertel 7157:
7158: # ------------------------------------------------------- Write our PID on disk
7159:
1.134 albertel 7160: my $execdir=$perlvar{'lonDaemons'};
1.1 albertel 7161: open (PIDSAVE,">$execdir/logs/lond.pid");
7162: print PIDSAVE "$$\n";
7163: close(PIDSAVE);
1.190 albertel 7164: &logthis("<font color='red'>CRITICAL: ---------- Starting ----------</font>");
1.57 www 7165: &status('Starting');
1.1 albertel 7166:
1.106 foxr 7167:
1.1 albertel 7168:
7169: # ----------------------------------------------------- Install signal handlers
7170:
1.57 www 7171:
1.1 albertel 7172: $SIG{CHLD} = \&REAPER;
7173: $SIG{INT} = $SIG{TERM} = \&HUNTSMAN;
7174: $SIG{HUP} = \&HUPSMAN;
1.57 www 7175: $SIG{USR1} = \&checkchildren;
1.144 foxr 7176: $SIG{USR2} = \&UpdateHosts;
1.106 foxr 7177:
1.148 foxr 7178: # Read the host hashes:
1.368 albertel 7179: &Apache::lonnet::load_hosts_tab();
1.447 raeburn 7180: my %iphost = &Apache::lonnet::get_iphost(1);
1.106 foxr 7181:
1.480 raeburn 7182: $dist=`$perlvar{'lonDaemons'}/distprobe`;
1.286 albertel 7183:
1.471 raeburn 7184: my $arch = `uname -i`;
1.475 raeburn 7185: chomp($arch);
1.471 raeburn 7186: if ($arch eq 'unknown') {
7187: $arch = `uname -m`;
1.475 raeburn 7188: chomp($arch);
1.471 raeburn 7189: }
7190:
1.106 foxr 7191: # --------------------------------------------------------------
7192: # Accept connections. When a connection comes in, it is validated
7193: # and if good, a child process is created to process transactions
7194: # along the connection.
7195:
1.1 albertel 7196: while (1) {
1.165 albertel 7197: &status('Starting accept');
1.106 foxr 7198: $client = $server->accept() or next;
1.165 albertel 7199: &status('Accepted '.$client.' off to spawn');
1.386 albertel 7200: make_new_child($client);
1.165 albertel 7201: &status('Finished spawning');
1.1 albertel 7202: }
7203:
1.212 foxr 7204: sub make_new_child {
7205: my $pid;
7206: # my $cipher; # Now global
7207: my $sigset;
1.178 foxr 7208:
1.212 foxr 7209: $client = shift;
7210: &status('Starting new child '.$client);
7211: &logthis('<font color="green"> Attempting to start child ('.$client.
7212: ")</font>");
7213: # block signal for fork
7214: $sigset = POSIX::SigSet->new(SIGINT);
7215: sigprocmask(SIG_BLOCK, $sigset)
7216: or die "Can't block SIGINT for fork: $!\n";
1.178 foxr 7217:
1.212 foxr 7218: die "fork: $!" unless defined ($pid = fork);
1.178 foxr 7219:
1.212 foxr 7220: $client->sockopt(SO_KEEPALIVE, 1); # Enable monitoring of
7221: # connection liveness.
1.178 foxr 7222:
1.212 foxr 7223: #
7224: # Figure out who we're talking to so we can record the peer in
7225: # the pid hash.
7226: #
7227: my $caller = getpeername($client);
7228: my ($port,$iaddr);
7229: if (defined($caller) && length($caller) > 0) {
7230: ($port,$iaddr)=unpack_sockaddr_in($caller);
7231: } else {
7232: &logthis("Unable to determine who caller was, getpeername returned nothing");
7233: }
7234: if (defined($iaddr)) {
7235: $clientip = inet_ntoa($iaddr);
7236: Debug("Connected with $clientip");
7237: } else {
7238: &logthis("Unable to determine clientip");
7239: $clientip='Unavailable';
7240: }
7241:
7242: if ($pid) {
7243: # Parent records the child's birth and returns.
7244: sigprocmask(SIG_UNBLOCK, $sigset)
7245: or die "Can't unblock SIGINT for fork: $!\n";
7246: $children{$pid} = $clientip;
7247: &status('Started child '.$pid);
1.462 foxr 7248: close($client);
1.212 foxr 7249: return;
7250: } else {
7251: # Child can *not* return from this subroutine.
7252: $SIG{INT} = 'DEFAULT'; # make SIGINT kill us as it did before
7253: $SIG{CHLD} = 'DEFAULT'; #make this default so that pwauth returns
7254: #don't get intercepted
7255: $SIG{USR1}= \&logstatus;
7256: $SIG{ALRM}= \&timeout;
1.468 foxr 7257: #
7258: # Block sigpipe as it gets thrownon socket disconnect and we want to
7259: # deal with that as a read faiure instead.
7260: #
7261: my $blockset = POSIX::SigSet->new(SIGPIPE);
7262: sigprocmask(SIG_BLOCK, $blockset);
7263:
1.212 foxr 7264: $lastlog='Forked ';
7265: $status='Forked';
1.178 foxr 7266:
1.212 foxr 7267: # unblock signals
7268: sigprocmask(SIG_UNBLOCK, $sigset)
7269: or die "Can't unblock SIGINT for fork: $!\n";
1.178 foxr 7270:
1.212 foxr 7271: # my $tmpsnum=0; # Now global
7272: #---------------------------------------------------- kerberos 5 initialization
7273: &Authen::Krb5::init_context();
1.489.2.16 raeburn 7274:
7275: my $no_ets;
1.489.2.43 raeburn 7276: if ($dist =~ /^(?:centos|rhes|scientific|oracle|rocky|alma)(\d+)/) {
1.489.2.16 raeburn 7277: if ($1 >= 7) {
7278: $no_ets = 1;
7279: }
7280: } elsif ($dist =~ /^suse(\d+\.\d+)$/) {
7281: if (($1 eq '9.3') || ($1 >= 12.2)) {
7282: $no_ets = 1;
7283: }
1.489.2.17 raeburn 7284: } elsif ($dist =~ /^sles(\d+)$/) {
7285: if ($1 > 11) {
7286: $no_ets = 1;
7287: }
1.489.2.16 raeburn 7288: } elsif ($dist =~ /^fedora(\d+)$/) {
7289: if ($1 < 7) {
7290: $no_ets = 1;
7291: }
7292: }
7293: unless ($no_ets) {
7294: &Authen::Krb5::init_ets();
7295: }
1.209 albertel 7296:
1.212 foxr 7297: &status('Accepted connection');
7298: # =============================================================================
7299: # do something with the connection
7300: # -----------------------------------------------------------------------------
7301: # see if we know client and 'check' for spoof IP by ineffective challenge
1.178 foxr 7302:
1.278 albertel 7303: my $outsideip=$clientip;
7304: if ($clientip eq '127.0.0.1') {
1.368 albertel 7305: $outsideip=&Apache::lonnet::get_host_ip($perlvar{'lonHostID'});
1.278 albertel 7306: }
1.412 foxr 7307: &ReadManagerTable();
1.368 albertel 7308: my $clientrec=defined(&Apache::lonnet::get_hosts_from_ip($outsideip));
1.278 albertel 7309: my $ismanager=($managers{$outsideip} ne undef);
1.432 raeburn 7310: $clientname = "[unknown]";
1.212 foxr 7311: if($clientrec) { # Establish client type.
7312: $ConnectionType = "client";
1.368 albertel 7313: $clientname = (&Apache::lonnet::get_hosts_from_ip($outsideip))[-1];
1.212 foxr 7314: if($ismanager) {
7315: $ConnectionType = "both";
7316: }
7317: } else {
7318: $ConnectionType = "manager";
1.278 albertel 7319: $clientname = $managers{$outsideip};
1.212 foxr 7320: }
7321: my $clientok;
1.178 foxr 7322:
1.212 foxr 7323: if ($clientrec || $ismanager) {
7324: &status("Waiting for init from $clientip $clientname");
7325: &logthis('<font color="yellow">INFO: Connection, '.
7326: $clientip.
7327: " ($clientname) connection type = $ConnectionType </font>" );
7328: &status("Connecting $clientip ($clientname))");
7329: my $remotereq=<$client>;
7330: chomp($remotereq);
7331: Debug("Got init: $remotereq");
1.337 albertel 7332:
1.212 foxr 7333: if ($remotereq =~ /^init/) {
7334: &sethost("sethost:$perlvar{'lonHostID'}");
7335: #
7336: # If the remote is attempting a local init... give that a try:
7337: #
1.432 raeburn 7338: (my $i, my $inittype, $clientversion) = split(/:/, $remotereq);
1.489.2.4 raeburn 7339: # For LON-CAPA 2.9, the client session will have sent its LON-CAPA
7340: # version when initiating the connection. For LON-CAPA 2.8 and older,
7341: # the version is retrieved from the global %loncaparevs in lonnet.pm.
7342: # $clientversion contains path to keyfile if $inittype eq 'local'
7343: # it's overridden below in this case
7344: $clientversion ||= $Apache::lonnet::loncaparevs{$clientname};
1.209 albertel 7345:
1.212 foxr 7346: # If the connection type is ssl, but I didn't get my
7347: # certificate files yet, then I'll drop back to
7348: # insecure (if allowed).
7349:
7350: if($inittype eq "ssl") {
7351: my ($ca, $cert) = lonssl::CertificateFile;
7352: my $kfile = lonssl::KeyFile;
7353: if((!$ca) ||
7354: (!$cert) ||
7355: (!$kfile)) {
7356: $inittype = ""; # This forces insecure attempt.
7357: &logthis("<font color=\"blue\"> Certificates not "
7358: ."installed -- trying insecure auth</font>");
1.224 foxr 7359: } else { # SSL certificates are in place so
1.212 foxr 7360: } # Leave the inittype alone.
7361: }
7362:
7363: if($inittype eq "local") {
1.432 raeburn 7364: $clientversion = $perlvar{'lonVersion'};
1.212 foxr 7365: my $key = LocalConnection($client, $remotereq);
7366: if($key) {
7367: Debug("Got local key $key");
7368: $clientok = 1;
7369: my $cipherkey = pack("H32", $key);
7370: $cipher = new IDEA($cipherkey);
7371: print $client "ok:local\n";
1.442 www 7372: &logthis('<font color="green">'
1.212 foxr 7373: . "Successful local authentication </font>");
7374: $keymode = "local"
1.178 foxr 7375: } else {
1.212 foxr 7376: Debug("Failed to get local key");
7377: $clientok = 0;
7378: shutdown($client, 3);
7379: close $client;
1.178 foxr 7380: }
1.212 foxr 7381: } elsif ($inittype eq "ssl") {
7382: my $key = SSLConnection($client);
7383: if ($key) {
7384: $clientok = 1;
7385: my $cipherkey = pack("H32", $key);
7386: $cipher = new IDEA($cipherkey);
7387: &logthis('<font color="green">'
7388: ."Successfull ssl authentication with $clientname </font>");
7389: $keymode = "ssl";
7390:
1.178 foxr 7391: } else {
1.212 foxr 7392: $clientok = 0;
7393: close $client;
1.178 foxr 7394: }
1.212 foxr 7395:
7396: } else {
7397: my $ok = InsecureConnection($client);
7398: if($ok) {
7399: $clientok = 1;
7400: &logthis('<font color="green">'
7401: ."Successful insecure authentication with $clientname </font>");
7402: print $client "ok\n";
7403: $keymode = "insecure";
1.178 foxr 7404: } else {
1.212 foxr 7405: &logthis('<font color="yellow">'
7406: ."Attempted insecure connection disallowed </font>");
7407: close $client;
7408: $clientok = 0;
1.178 foxr 7409: }
7410: }
1.212 foxr 7411: } else {
7412: &logthis(
7413: "<font color='blue'>WARNING: "
7414: ."$clientip failed to initialize: >$remotereq< </font>");
7415: &status('No init '.$clientip);
7416: }
7417: } else {
7418: &logthis(
7419: "<font color='blue'>WARNING: Unknown client $clientip</font>");
7420: &status('Hung up on '.$clientip);
7421: }
7422:
7423: if ($clientok) {
7424: # ---------------- New known client connecting, could mean machine online again
1.368 albertel 7425: if (&Apache::lonnet::get_host_ip($currenthostid) ne $clientip
1.367 albertel 7426: && $clientip ne '127.0.0.1') {
1.375 albertel 7427: &Apache::lonnet::reconlonc($clientname);
1.212 foxr 7428: }
7429: &logthis("<font color='green'>Established connection: $clientname</font>");
7430: &status('Will listen to '.$clientname);
7431: # ------------------------------------------------------------ Process requests
7432: my $keep_going = 1;
7433: my $user_input;
1.448 raeburn 7434: my $clienthost = &Apache::lonnet::hostname($clientname);
7435: my $clientserverhomeID = &Apache::lonnet::get_server_homeID($clienthost);
7436: $clienthomedom = &Apache::lonnet::host_domain($clientserverhomeID);
1.212 foxr 7437: while(($user_input = get_request) && $keep_going) {
7438: alarm(120);
7439: Debug("Main: Got $user_input\n");
7440: $keep_going = &process_request($user_input);
1.178 foxr 7441: alarm(0);
1.489.2.42 raeburn 7442: &status('Listening to '.$clientname." ($keymode)");
1.161 foxr 7443: }
1.212 foxr 7444:
1.59 www 7445: # --------------------------------------------- client unknown or fishy, refuse
1.212 foxr 7446: } else {
1.161 foxr 7447: print $client "refused\n";
7448: $client->close();
1.190 albertel 7449: &logthis("<font color='blue'>WARNING: "
1.161 foxr 7450: ."Rejected client $clientip, closing connection</font>");
7451: }
1.212 foxr 7452: }
1.161 foxr 7453:
1.1 albertel 7454: # =============================================================================
1.161 foxr 7455:
1.190 albertel 7456: &logthis("<font color='red'>CRITICAL: "
1.161 foxr 7457: ."Disconnect from $clientip ($clientname)</font>");
1.489.2.42 raeburn 7458:
7459:
1.161 foxr 7460: # this exit is VERY important, otherwise the child will become
7461: # a producer of more and more children, forking yourself into
7462: # process death.
7463: exit;
1.106 foxr 7464:
1.78 foxr 7465: }
1.261 foxr 7466: #
7467: # Determine if a user is an author for the indicated domain.
7468: #
7469: # Parameters:
7470: # domain - domain to check in .
7471: # user - Name of user to check.
7472: #
7473: # Return:
7474: # 1 - User is an author for domain.
7475: # 0 - User is not an author for domain.
7476: sub is_author {
7477: my ($domain, $user) = @_;
7478:
7479: &Debug("is_author: $user @ $domain");
7480:
7481: my $hashref = &tie_user_hash($domain, $user, "roles",
7482: &GDBM_READER());
7483:
7484: # Author role should show up as a key /domain/_au
1.78 foxr 7485:
1.321 albertel 7486: my $value;
1.487 foxr 7487: if ($hashref) {
1.78 foxr 7488:
1.487 foxr 7489: my $key = "/$domain/_au";
7490: if (defined($hashref)) {
7491: $value = $hashref->{$key};
7492: if(!untie_user_hash($hashref)) {
7493: return 'error: ' . ($!+0)." untie (GDBM) Failed";
7494: }
7495: }
7496:
7497: if(defined($value)) {
7498: &Debug("$user @ $domain is an author");
7499: }
7500: } else {
7501: return 'error: '.($!+0)." tie (GDBM) Failed";
1.261 foxr 7502: }
7503:
7504: return defined($value);
7505: }
1.78 foxr 7506: #
7507: # Checks to see if the input roleput request was to set
1.482 www 7508: # an author role. If so, creates construction space
1.78 foxr 7509: # Parameters:
7510: # request - The request sent to the rolesput subchunk.
7511: # We're looking for /domain/_au
7512: # domain - The domain in which the user is having roles doctored.
7513: # user - Name of the user for which the role is being put.
7514: # authtype - The authentication type associated with the user.
7515: #
1.289 albertel 7516: sub manage_permissions {
1.192 foxr 7517: my ($request, $domain, $user, $authtype) = @_;
1.78 foxr 7518: # See if the request is of the form /$domain/_au
1.289 albertel 7519: if($request =~ /^(\/\Q$domain\E\/_au)$/) { # It's an author rolesput...
1.484 raeburn 7520: my $path=$perlvar{'lonDocRoot'}."/priv/$domain";
1.482 www 7521: unless (-e $path) {
7522: mkdir($path);
7523: }
7524: unless (-e $path.'/'.$user) {
7525: mkdir($path.'/'.$user);
7526: }
1.78 foxr 7527: }
7528: }
1.222 foxr 7529:
7530:
7531: #
7532: # Return the full path of a user password file, whether it exists or not.
7533: # Parameters:
7534: # domain - Domain in which the password file lives.
7535: # user - name of the user.
7536: # Returns:
7537: # Full passwd path:
7538: #
7539: sub password_path {
7540: my ($domain, $user) = @_;
1.264 albertel 7541: return &propath($domain, $user).'/passwd';
1.222 foxr 7542: }
7543:
7544: # Password Filename
7545: # Returns the path to a passwd file given domain and user... only if
7546: # it exists.
7547: # Parameters:
7548: # domain - Domain in which to search.
7549: # user - username.
7550: # Returns:
7551: # - If the password file exists returns its path.
7552: # - If the password file does not exist, returns undefined.
7553: #
7554: sub password_filename {
7555: my ($domain, $user) = @_;
7556:
7557: Debug ("PasswordFilename called: dom = $domain user = $user");
7558:
7559: my $path = &password_path($domain, $user);
7560: Debug("PasswordFilename got path: $path");
7561: if(-e $path) {
7562: return $path;
7563: } else {
7564: return undef;
7565: }
7566: }
7567:
7568: #
7569: # Rewrite the contents of the user's passwd file.
7570: # Parameters:
7571: # domain - domain of the user.
7572: # name - User's name.
7573: # contents - New contents of the file.
1.489.2.26 raeburn 7574: # saveold - (optional). If true save old file in a passwd.bak file.
1.222 foxr 7575: # Returns:
7576: # 0 - Failed.
7577: # 1 - Success.
7578: #
7579: sub rewrite_password_file {
1.489.2.26 raeburn 7580: my ($domain, $user, $contents, $saveold) = @_;
1.222 foxr 7581:
7582: my $file = &password_filename($domain, $user);
7583: if (defined $file) {
1.489.2.26 raeburn 7584: if ($saveold) {
7585: my $bakfile = $file.'.bak';
7586: if (CopyFile($file,$bakfile)) {
7587: chmod(0400,$bakfile);
7588: &logthis("Old password saved in passwd.bak for internally authenticated user: $user:$domain");
7589: } else {
7590: &logthis("Failed to save old password in passwd.bak for internally authenticated user: $user:$domain");
7591: }
7592: }
1.222 foxr 7593: my $pf = IO::File->new(">$file");
7594: if($pf) {
7595: print $pf "$contents\n";
7596: return 1;
7597: } else {
7598: return 0;
7599: }
7600: } else {
7601: return 0;
7602: }
7603:
7604: }
7605:
1.78 foxr 7606: #
1.222 foxr 7607: # get_auth_type - Determines the authorization type of a user in a domain.
1.78 foxr 7608:
7609: # Returns the authorization type or nouser if there is no such user.
7610: #
1.436 raeburn 7611: sub get_auth_type {
1.192 foxr 7612: my ($domain, $user) = @_;
1.78 foxr 7613:
1.222 foxr 7614: Debug("get_auth_type( $domain, $user ) \n");
1.78 foxr 7615: my $proname = &propath($domain, $user);
7616: my $passwdfile = "$proname/passwd";
7617: if( -e $passwdfile ) {
7618: my $pf = IO::File->new($passwdfile);
7619: my $realpassword = <$pf>;
7620: chomp($realpassword);
1.79 foxr 7621: Debug("Password info = $realpassword\n");
1.78 foxr 7622: my ($authtype, $contentpwd) = split(/:/, $realpassword);
1.79 foxr 7623: Debug("Authtype = $authtype, content = $contentpwd\n");
1.259 raeburn 7624: return "$authtype:$contentpwd";
1.224 foxr 7625: } else {
1.79 foxr 7626: Debug("Returning nouser");
1.78 foxr 7627: return "nouser";
7628: }
1.1 albertel 7629: }
7630:
1.220 foxr 7631: #
7632: # Validate a user given their domain, name and password. This utility
7633: # function is used by both AuthenticateHandler and ChangePasswordHandler
7634: # to validate the login credentials of a user.
7635: # Parameters:
7636: # $domain - The domain being logged into (this is required due to
7637: # the capability for multihomed systems.
7638: # $user - The name of the user being validated.
7639: # $password - The user's propoposed password.
7640: #
7641: # Returns:
7642: # 1 - The domain,user,pasword triplet corresponds to a valid
7643: # user.
7644: # 0 - The domain,user,password triplet is not a valid user.
7645: #
7646: sub validate_user {
1.396 raeburn 7647: my ($domain, $user, $password, $checkdefauth) = @_;
1.220 foxr 7648:
7649: # Why negative ~pi you may well ask? Well this function is about
7650: # authentication, and therefore very important to get right.
7651: # I've initialized the flag that determines whether or not I've
7652: # validated correctly to a value it's not supposed to get.
7653: # At the end of this function. I'll ensure that it's not still that
7654: # value so we don't just wind up returning some accidental value
7655: # as a result of executing an unforseen code path that
1.249 foxr 7656: # did not set $validated. At the end of valid execution paths,
7657: # validated shoule be 1 for success or 0 for failuer.
1.220 foxr 7658:
7659: my $validated = -3.14159;
7660:
7661: # How we authenticate is determined by the type of authentication
7662: # the user has been assigned. If the authentication type is
7663: # "nouser", the user does not exist so we will return 0.
7664:
1.222 foxr 7665: my $contents = &get_auth_type($domain, $user);
1.220 foxr 7666: my ($howpwd, $contentpwd) = split(/:/, $contents);
7667:
7668: my $null = pack("C",0); # Used by kerberos auth types.
7669:
1.395 raeburn 7670: if ($howpwd eq 'nouser') {
1.396 raeburn 7671: if ($checkdefauth) {
7672: my %domdefaults = &Apache::lonnet::get_domain_defaults($domain);
7673: if ($domdefaults{'auth_def'} eq 'localauth') {
7674: $howpwd = $domdefaults{'auth_def'};
7675: $contentpwd = $domdefaults{'auth_arg_def'};
7676: } elsif ((($domdefaults{'auth_def'} eq 'krb4') ||
7677: ($domdefaults{'auth_def'} eq 'krb5')) &&
7678: ($domdefaults{'auth_arg_def'} ne '')) {
7679: $howpwd = $domdefaults{'auth_def'};
7680: $contentpwd = $domdefaults{'auth_arg_def'};
7681: }
1.395 raeburn 7682: }
1.489.2.26 raeburn 7683: }
1.220 foxr 7684: if ($howpwd ne 'nouser') {
7685: if($howpwd eq "internal") { # Encrypted is in local password file.
1.489.2.21 raeburn 7686: if (length($contentpwd) == 13) {
7687: $validated = (crypt($password,$contentpwd) eq $contentpwd);
7688: if ($validated) {
1.489.2.26 raeburn 7689: my %domdefaults = &Apache::lonnet::get_domain_defaults($domain);
7690: if ($domdefaults{'intauth_switch'}) {
7691: my $ncpass = &hash_passwd($domain,$password);
7692: my $saveold;
7693: if ($domdefaults{'intauth_switch'} == 2) {
7694: $saveold = 1;
7695: }
7696: if (&rewrite_password_file($domain,$user,"$howpwd:$ncpass",$saveold)) {
7697: &update_passwd_history($user,$domain,$howpwd,'conversion');
7698: &logthis("Validated password hashed with bcrypt for $user:$domain");
7699: }
1.489.2.21 raeburn 7700: }
7701: }
7702: } else {
1.489.2.26 raeburn 7703: $validated = &check_internal_passwd($password,$contentpwd,$domain,$user);
1.489.2.21 raeburn 7704: }
1.220 foxr 7705: }
7706: elsif ($howpwd eq "unix") { # User is a normal unix user.
7707: $contentpwd = (getpwnam($user))[1];
7708: if($contentpwd) {
7709: if($contentpwd eq 'x') { # Shadow password file...
7710: my $pwauth_path = "/usr/local/sbin/pwauth";
7711: open PWAUTH, "|$pwauth_path" or
7712: die "Cannot invoke authentication";
7713: print PWAUTH "$user\n$password\n";
7714: close PWAUTH;
7715: $validated = ! $?;
7716:
7717: } else { # Passwords in /etc/passwd.
7718: $validated = (crypt($password,
7719: $contentpwd) eq $contentpwd);
7720: }
7721: } else {
7722: $validated = 0;
7723: }
1.439 raeburn 7724: } elsif ($howpwd eq "krb4") { # user is in kerberos 4 auth. domain.
7725: my $checkwithkrb5 = 0;
7726: if ($dist =~/^fedora(\d+)$/) {
7727: if ($1 > 11) {
7728: $checkwithkrb5 = 1;
7729: }
7730: } elsif ($dist =~ /^suse([\d.]+)$/) {
7731: if ($1 > 11.1) {
7732: $checkwithkrb5 = 1;
7733: }
7734: }
7735: if ($checkwithkrb5) {
7736: $validated = &krb5_authen($password,$null,$user,$contentpwd);
7737: } else {
7738: $validated = &krb4_authen($password,$null,$user,$contentpwd);
7739: }
1.224 foxr 7740: } elsif ($howpwd eq "krb5") { # User is in kerberos 5 auth. domain.
1.439 raeburn 7741: $validated = &krb5_authen($password,$null,$user,$contentpwd);
1.224 foxr 7742: } elsif ($howpwd eq "localauth") {
1.220 foxr 7743: # Authenticate via installation specific authentcation method:
7744: $validated = &localauth::localauth($user,
7745: $password,
1.353 albertel 7746: $contentpwd,
7747: $domain);
1.358 albertel 7748: if ($validated < 0) {
1.357 albertel 7749: &logthis("localauth for $contentpwd $user:$domain returned a $validated");
7750: $validated = 0;
7751: }
1.224 foxr 7752: } else { # Unrecognized auth is also bad.
1.220 foxr 7753: $validated = 0;
7754: }
7755: } else {
7756: $validated = 0;
7757: }
7758: #
7759: # $validated has the correct stat of the authentication:
7760: #
7761:
7762: unless ($validated != -3.14159) {
1.249 foxr 7763: # I >really really< want to know if this happens.
7764: # since it indicates that user authentication is badly
7765: # broken in some code path.
7766: #
7767: die "ValidateUser - failed to set the value of validated $domain, $user $password";
1.220 foxr 7768: }
7769: return $validated;
7770: }
7771:
1.489.2.21 raeburn 7772: sub check_internal_passwd {
1.489.2.26 raeburn 7773: my ($plainpass,$stored,$domain,$user) = @_;
1.489.2.21 raeburn 7774: my (undef,$method,@rest) = split(/!/,$stored);
1.489.2.26 raeburn 7775: if ($method eq 'bcrypt') {
1.489.2.21 raeburn 7776: my $result = &hash_passwd($domain,$plainpass,@rest);
7777: if ($result ne $stored) {
7778: return 0;
7779: }
1.489.2.26 raeburn 7780: my %domdefaults = &Apache::lonnet::get_domain_defaults($domain);
7781: if ($domdefaults{'intauth_check'}) {
7782: # Upgrade to a larger number of rounds if necessary
7783: my $defaultcost = $domdefaults{'intauth_cost'};
7784: if (($defaultcost eq '') || ($defaultcost =~ /D/)) {
7785: $defaultcost = 10;
7786: }
7787: if (int($rest[0])<int($defaultcost)) {
7788: if ($domdefaults{'intauth_check'} == 1) {
7789: my $ncpass = &hash_passwd($domain,$plainpass);
7790: if (&rewrite_password_file($domain,$user,"internal:$ncpass")) {
7791: &update_passwd_history($user,$domain,'internal','update cost');
7792: &logthis("Validated password hashed with bcrypt for $user:$domain");
7793: }
7794: return 1;
7795: } elsif ($domdefaults{'intauth_check'} == 2) {
7796: return 0;
7797: }
7798: }
7799: } else {
7800: return 1;
1.489.2.21 raeburn 7801: }
7802: }
7803: return 0;
7804: }
7805:
7806: sub get_last_authchg {
7807: my ($domain,$user) = @_;
7808: my $lastmod;
7809: my $logname = &propath($domain,$user).'/passwd.log';
7810: if (-e "$logname") {
7811: $lastmod = (stat("$logname"))[9];
7812: }
7813: return $lastmod;
7814: }
7815:
1.439 raeburn 7816: sub krb4_authen {
7817: my ($password,$null,$user,$contentpwd) = @_;
7818: my $validated = 0;
7819: if (!($password =~ /$null/) ) { # Null password not allowed.
7820: eval {
7821: require Authen::Krb4;
7822: };
7823: if (!$@) {
7824: my $k4error = &Authen::Krb4::get_pw_in_tkt($user,
7825: "",
7826: $contentpwd,,
7827: 'krbtgt',
7828: $contentpwd,
7829: 1,
7830: $password);
7831: if(!$k4error) {
7832: $validated = 1;
7833: } else {
7834: $validated = 0;
7835: &logthis('krb4: '.$user.', '.$contentpwd.', '.
7836: &Authen::Krb4::get_err_txt($Authen::Krb4::error));
7837: }
7838: } else {
7839: $validated = krb5_authen($password,$null,$user,$contentpwd);
7840: }
7841: }
7842: return $validated;
7843: }
7844:
7845: sub krb5_authen {
7846: my ($password,$null,$user,$contentpwd) = @_;
7847: my $validated = 0;
7848: if(!($password =~ /$null/)) { # Null password not allowed.
7849: my $krbclient = &Authen::Krb5::parse_name($user.'@'
7850: .$contentpwd);
7851: my $krbservice = "krbtgt/".$contentpwd."\@".$contentpwd;
7852: my $krbserver = &Authen::Krb5::parse_name($krbservice);
7853: my $credentials= &Authen::Krb5::cc_default();
7854: $credentials->initialize(&Authen::Krb5::parse_name($user.'@'
7855: .$contentpwd));
7856: my $krbreturn;
7857: if (exists(&Authen::Krb5::get_init_creds_password)) {
7858: $krbreturn =
7859: &Authen::Krb5::get_init_creds_password($krbclient,$password,
7860: $krbservice);
7861: $validated = (ref($krbreturn) eq 'Authen::Krb5::Creds');
7862: } else {
7863: $krbreturn =
7864: &Authen::Krb5::get_in_tkt_with_password($krbclient,$krbserver,
7865: $password,$credentials);
7866: $validated = ($krbreturn == 1);
7867: }
7868: if (!$validated) {
7869: &logthis('krb5: '.$user.', '.$contentpwd.', '.
7870: &Authen::Krb5::error());
7871: }
7872: }
7873: return $validated;
7874: }
1.220 foxr 7875:
1.84 albertel 7876: sub addline {
7877: my ($fname,$hostid,$ip,$newline)=@_;
7878: my $contents;
7879: my $found=0;
1.355 albertel 7880: my $expr='^'.quotemeta($hostid).':'.quotemeta($ip).':';
1.134 albertel 7881: my $sh;
1.84 albertel 7882: if ($sh=IO::File->new("$fname.subscription")) {
7883: while (my $subline=<$sh>) {
7884: if ($subline !~ /$expr/) {$contents.= $subline;} else {$found=1;}
7885: }
7886: $sh->close();
7887: }
7888: $sh=IO::File->new(">$fname.subscription");
7889: if ($contents) { print $sh $contents; }
7890: if ($newline) { print $sh $newline; }
7891: $sh->close();
7892: return $found;
1.86 www 7893: }
7894:
1.234 foxr 7895: sub get_chat {
1.324 raeburn 7896: my ($cdom,$cname,$udom,$uname,$group)=@_;
1.310 albertel 7897:
1.87 www 7898: my @entries=();
1.324 raeburn 7899: my $namespace = 'nohist_chatroom';
7900: my $namespace_inroom = 'nohist_inchatroom';
1.335 albertel 7901: if ($group ne '') {
1.324 raeburn 7902: $namespace .= '_'.$group;
7903: $namespace_inroom .= '_'.$group;
7904: }
7905: my $hashref = &tie_user_hash($cdom, $cname, $namespace,
1.310 albertel 7906: &GDBM_READER());
7907: if ($hashref) {
7908: @entries=map { $_.':'.$hashref->{$_} } sort(keys(%$hashref));
1.311 albertel 7909: &untie_user_hash($hashref);
1.123 www 7910: }
1.124 www 7911: my @participants=();
1.134 albertel 7912: my $cutoff=time-60;
1.324 raeburn 7913: $hashref = &tie_user_hash($cdom, $cname, $namespace_inroom,
1.310 albertel 7914: &GDBM_WRCREAT());
7915: if ($hashref) {
7916: $hashref->{$uname.':'.$udom}=time;
7917: foreach my $user (sort(keys(%$hashref))) {
7918: if ($hashref->{$user}>$cutoff) {
7919: push(@participants, 'active_participant:'.$user);
1.123 www 7920: }
7921: }
1.311 albertel 7922: &untie_user_hash($hashref);
1.86 www 7923: }
1.124 www 7924: return (@participants,@entries);
1.86 www 7925: }
7926:
1.234 foxr 7927: sub chat_add {
1.324 raeburn 7928: my ($cdom,$cname,$newchat,$group)=@_;
1.88 albertel 7929: my @entries=();
1.142 www 7930: my $time=time;
1.324 raeburn 7931: my $namespace = 'nohist_chatroom';
7932: my $logfile = 'chatroom.log';
1.335 albertel 7933: if ($group ne '') {
1.324 raeburn 7934: $namespace .= '_'.$group;
7935: $logfile = 'chatroom_'.$group.'.log';
7936: }
7937: my $hashref = &tie_user_hash($cdom, $cname, $namespace,
1.310 albertel 7938: &GDBM_WRCREAT());
7939: if ($hashref) {
7940: @entries=map { $_.':'.$hashref->{$_} } sort(keys(%$hashref));
1.88 albertel 7941: my ($lastid)=($entries[$#entries]=~/^(\w+)\:/);
7942: my ($thentime,$idnum)=split(/\_/,$lastid);
7943: my $newid=$time.'_000000';
7944: if ($thentime==$time) {
7945: $idnum=~s/^0+//;
7946: $idnum++;
7947: $idnum=substr('000000'.$idnum,-6,6);
7948: $newid=$time.'_'.$idnum;
7949: }
1.310 albertel 7950: $hashref->{$newid}=$newchat;
1.88 albertel 7951: my $expired=$time-3600;
1.310 albertel 7952: foreach my $comment (keys(%$hashref)) {
7953: my ($thistime) = ($comment=~/(\d+)\_/);
1.88 albertel 7954: if ($thistime<$expired) {
1.310 albertel 7955: delete $hashref->{$comment};
1.88 albertel 7956: }
7957: }
1.310 albertel 7958: {
7959: my $proname=&propath($cdom,$cname);
1.324 raeburn 7960: if (open(CHATLOG,">>$proname/$logfile")) {
1.310 albertel 7961: print CHATLOG ("$time:".&unescape($newchat)."\n");
7962: }
7963: close(CHATLOG);
1.142 www 7964: }
1.311 albertel 7965: &untie_user_hash($hashref);
1.86 www 7966: }
1.84 albertel 7967: }
7968:
7969: sub unsub {
7970: my ($fname,$clientip)=@_;
7971: my $result;
1.188 foxr 7972: my $unsubs = 0; # Number of successful unsubscribes:
7973:
7974:
7975: # An old way subscriptions were handled was to have a
7976: # subscription marker file:
7977:
7978: Debug("Attempting unlink of $fname.$clientname");
1.161 foxr 7979: if (unlink("$fname.$clientname")) {
1.188 foxr 7980: $unsubs++; # Successful unsub via marker file.
7981: }
7982:
7983: # The more modern way to do it is to have a subscription list
7984: # file:
7985:
1.84 albertel 7986: if (-e "$fname.subscription") {
1.161 foxr 7987: my $found=&addline($fname,$clientname,$clientip,'');
1.188 foxr 7988: if ($found) {
7989: $unsubs++;
7990: }
7991: }
7992:
7993: # If either or both of these mechanisms succeeded in unsubscribing a
7994: # resource we can return ok:
7995:
7996: if($unsubs) {
7997: $result = "ok\n";
1.84 albertel 7998: } else {
1.188 foxr 7999: $result = "not_subscribed\n";
1.84 albertel 8000: }
1.188 foxr 8001:
1.84 albertel 8002: return $result;
8003: }
8004:
1.101 www 8005: sub currentversion {
8006: my $fname=shift;
8007: my $version=-1;
8008: my $ulsdir='';
8009: if ($fname=~/^(.+)\/[^\/]+$/) {
8010: $ulsdir=$1;
8011: }
1.114 albertel 8012: my ($fnamere1,$fnamere2);
8013: # remove version if already specified
1.101 www 8014: $fname=~s/\.\d+\.(\w+(?:\.meta)*)$/\.$1/;
1.114 albertel 8015: # get the bits that go before and after the version number
8016: if ( $fname=~/^(.*\.)(\w+(?:\.meta)*)$/ ) {
8017: $fnamere1=$1;
8018: $fnamere2='.'.$2;
8019: }
1.101 www 8020: if (-e $fname) { $version=1; }
8021: if (-e $ulsdir) {
1.134 albertel 8022: if(-d $ulsdir) {
8023: if (opendir(LSDIR,$ulsdir)) {
8024: my $ulsfn;
8025: while ($ulsfn=readdir(LSDIR)) {
1.101 www 8026: # see if this is a regular file (ignore links produced earlier)
1.134 albertel 8027: my $thisfile=$ulsdir.'/'.$ulsfn;
8028: unless (-l $thisfile) {
1.160 www 8029: if ($thisfile=~/\Q$fnamere1\E(\d+)\Q$fnamere2\E$/) {
1.134 albertel 8030: if ($1>$version) { $version=$1; }
8031: }
8032: }
8033: }
8034: closedir(LSDIR);
8035: $version++;
8036: }
8037: }
8038: }
8039: return $version;
1.101 www 8040: }
8041:
8042: sub thisversion {
8043: my $fname=shift;
8044: my $version=-1;
8045: if ($fname=~/\.(\d+)\.\w+(?:\.meta)*$/) {
8046: $version=$1;
8047: }
8048: return $version;
8049: }
8050:
1.84 albertel 8051: sub subscribe {
8052: my ($userinput,$clientip)=@_;
8053: my $result;
1.293 albertel 8054: my ($cmd,$fname)=split(/:/,$userinput,2);
1.84 albertel 8055: my $ownership=&ishome($fname);
8056: if ($ownership eq 'owner') {
1.101 www 8057: # explitly asking for the current version?
8058: unless (-e $fname) {
8059: my $currentversion=¤tversion($fname);
8060: if (&thisversion($fname)==$currentversion) {
8061: if ($fname=~/^(.+)\.\d+\.(\w+(?:\.meta)*)$/) {
8062: my $root=$1;
8063: my $extension=$2;
8064: symlink($root.'.'.$extension,
8065: $root.'.'.$currentversion.'.'.$extension);
1.102 www 8066: unless ($extension=~/\.meta$/) {
8067: symlink($root.'.'.$extension.'.meta',
8068: $root.'.'.$currentversion.'.'.$extension.'.meta');
8069: }
1.101 www 8070: }
8071: }
8072: }
1.84 albertel 8073: if (-e $fname) {
8074: if (-d $fname) {
8075: $result="directory\n";
8076: } else {
1.161 foxr 8077: if (-e "$fname.$clientname") {&unsub($fname,$clientip);}
1.134 albertel 8078: my $now=time;
1.161 foxr 8079: my $found=&addline($fname,$clientname,$clientip,
8080: "$clientname:$clientip:$now\n");
1.84 albertel 8081: if ($found) { $result="$fname\n"; }
8082: # if they were subscribed to only meta data, delete that
8083: # subscription, when you subscribe to a file you also get
8084: # the metadata
8085: unless ($fname=~/\.meta$/) { &unsub("$fname.meta",$clientip); }
8086: $fname=~s/\/home\/httpd\/html\/res/raw/;
1.476 raeburn 8087: my $protocol = $Apache::lonnet::protocol{$perlvar{'lonHostID'}};
8088: $protocol = 'http' if ($protocol ne 'https');
8089: $fname=$protocol.'://'.&Apache::lonnet::hostname($perlvar{'lonHostID'})."/".$fname;
1.84 albertel 8090: $result="$fname\n";
8091: }
8092: } else {
8093: $result="not_found\n";
8094: }
8095: } else {
8096: $result="rejected\n";
8097: }
8098: return $result;
8099: }
1.287 foxr 8100: # Change the passwd of a unix user. The caller must have
8101: # first verified that the user is a loncapa user.
8102: #
8103: # Parameters:
8104: # user - Unix user name to change.
8105: # pass - New password for the user.
8106: # Returns:
8107: # ok - if success
8108: # other - Some meaningfule error message string.
8109: # NOTE:
8110: # invokes a setuid script to change the passwd.
8111: sub change_unix_password {
8112: my ($user, $pass) = @_;
8113:
8114: &Debug("change_unix_password");
8115: my $execdir=$perlvar{'lonDaemons'};
8116: &Debug("Opening lcpasswd pipeline");
8117: my $pf = IO::File->new("|$execdir/lcpasswd > "
8118: ."$perlvar{'lonDaemons'}"
8119: ."/logs/lcpasswd.log");
8120: print $pf "$user\n$pass\n$pass\n";
8121: close $pf;
8122: my $err = $?;
8123: return ($err < @passwderrors) ? $passwderrors[$err] :
8124: "pwchange_falure - unknown error";
8125:
8126:
8127: }
8128:
1.91 albertel 8129:
8130: sub make_passwd_file {
1.489.2.21 raeburn 8131: my ($uname,$udom,$umode,$npass,$passfilename,$action)=@_;
1.390 raeburn 8132: my $result="ok";
1.91 albertel 8133: if ($umode eq 'krb4' or $umode eq 'krb5') {
8134: {
8135: my $pf = IO::File->new(">$passfilename");
1.261 foxr 8136: if ($pf) {
8137: print $pf "$umode:$npass\n";
1.489.2.21 raeburn 8138: &update_passwd_history($uname,$udom,$umode,$action);
1.261 foxr 8139: } else {
8140: $result = "pass_file_failed_error";
8141: }
1.91 albertel 8142: }
8143: } elsif ($umode eq 'internal') {
1.489.2.21 raeburn 8144: my $ncpass = &hash_passwd($udom,$npass);
1.91 albertel 8145: {
8146: &Debug("Creating internal auth");
8147: my $pf = IO::File->new(">$passfilename");
1.261 foxr 8148: if($pf) {
8149: print $pf "internal:$ncpass\n";
1.489.2.21 raeburn 8150: &update_passwd_history($uname,$udom,$umode,$action);
1.261 foxr 8151: } else {
8152: $result = "pass_file_failed_error";
8153: }
1.91 albertel 8154: }
8155: } elsif ($umode eq 'localauth') {
8156: {
8157: my $pf = IO::File->new(">$passfilename");
1.261 foxr 8158: if($pf) {
8159: print $pf "localauth:$npass\n";
1.489.2.21 raeburn 8160: &update_passwd_history($uname,$udom,$umode,$action);
1.261 foxr 8161: } else {
8162: $result = "pass_file_failed_error";
8163: }
1.91 albertel 8164: }
8165: } elsif ($umode eq 'unix') {
1.489.2.8 raeburn 8166: &logthis(">>>Attempt to create unix account blocked -- unix auth not available for new users.");
8167: $result="no_new_unix_accounts";
1.91 albertel 8168: } elsif ($umode eq 'none') {
8169: {
1.223 foxr 8170: my $pf = IO::File->new("> $passfilename");
1.261 foxr 8171: if($pf) {
8172: print $pf "none:\n";
8173: } else {
8174: $result = "pass_file_failed_error";
8175: }
1.91 albertel 8176: }
8177: } else {
1.390 raeburn 8178: $result="auth_mode_error";
1.91 albertel 8179: }
8180: return $result;
1.121 albertel 8181: }
8182:
1.265 albertel 8183: sub convert_photo {
8184: my ($start,$dest)=@_;
8185: system("convert $start $dest");
8186: }
8187:
1.121 albertel 8188: sub sethost {
8189: my ($remotereq) = @_;
8190: my (undef,$hostid)=split(/:/,$remotereq);
1.322 albertel 8191: # ignore sethost if we are already correct
8192: if ($hostid eq $currenthostid) {
8193: return 'ok';
8194: }
8195:
1.121 albertel 8196: if (!defined($hostid)) { $hostid=$perlvar{'lonHostID'}; }
1.368 albertel 8197: if (&Apache::lonnet::get_host_ip($perlvar{'lonHostID'})
8198: eq &Apache::lonnet::get_host_ip($hostid)) {
1.200 matthew 8199: $currenthostid =$hostid;
1.369 albertel 8200: $currentdomainid=&Apache::lonnet::host_domain($hostid);
1.443 www 8201: # &logthis("Setting hostid to $hostid, and domain to $currentdomainid");
1.121 albertel 8202: } else {
8203: &logthis("Requested host id $hostid not an alias of ".
8204: $perlvar{'lonHostID'}." refusing connection");
8205: return 'unable_to_set';
8206: }
8207: return 'ok';
8208: }
8209:
8210: sub version {
8211: my ($userinput)=@_;
8212: $remoteVERSION=(split(/:/,$userinput))[1];
8213: return "version:$VERSION";
1.127 albertel 8214: }
1.178 foxr 8215:
1.447 raeburn 8216: sub get_usersession_config {
8217: my ($dom,$name) = @_;
8218: my ($usersessionconf,$cached)=&Apache::lonnet::is_cached_new($name,$dom);
8219: if (defined($cached)) {
8220: return $usersessionconf;
8221: } else {
8222: my %domconfig = &Apache::lonnet::get_dom('configuration',['usersessions'],$dom);
8223: if (ref($domconfig{'usersessions'}) eq 'HASH') {
8224: &Apache::lonnet::do_cache_new($name,$dom,$domconfig{'usersessions'},3600);
8225: return $domconfig{'usersessions'};
8226: }
8227: }
8228: return;
8229: }
1.200 matthew 8230:
1.489.2.27 raeburn 8231: sub get_usersearch_config {
8232: my ($dom,$name) = @_;
8233: my ($usersearchconf,$cached)=&Apache::lonnet::is_cached_new($name,$dom);
8234: if (defined($cached)) {
8235: return $usersearchconf;
8236: } else {
8237: my %domconfig = &Apache::lonnet::get_dom('configuration',['directorysrch'],$dom);
8238: &Apache::lonnet::do_cache_new($name,$dom,$domconfig{'directorysrch'},3600);
8239: return $domconfig{'directorysrch'};
8240: }
8241: return;
8242: }
1.450 raeburn 8243:
1.471 raeburn 8244: sub distro_and_arch {
8245: return $dist.':'.$arch;
8246: }
8247:
1.61 harris41 8248: # ----------------------------------- POD (plain old documentation, CPAN style)
8249:
8250: =head1 NAME
8251:
8252: lond - "LON Daemon" Server (port "LOND" 5663)
8253:
8254: =head1 SYNOPSIS
8255:
1.74 harris41 8256: Usage: B<lond>
8257:
8258: Should only be run as user=www. This is a command-line script which
8259: is invoked by B<loncron>. There is no expectation that a typical user
8260: will manually start B<lond> from the command-line. (In other words,
8261: DO NOT START B<lond> YOURSELF.)
1.61 harris41 8262:
8263: =head1 DESCRIPTION
8264:
1.74 harris41 8265: There are two characteristics associated with the running of B<lond>,
8266: PROCESS MANAGEMENT (starting, stopping, handling child processes)
8267: and SERVER-SIDE ACTIVITIES (password authentication, user creation,
8268: subscriptions, etc). These are described in two large
8269: sections below.
8270:
8271: B<PROCESS MANAGEMENT>
8272:
1.61 harris41 8273: Preforker - server who forks first. Runs as a daemon. HUPs.
8274: Uses IDEA encryption
8275:
1.74 harris41 8276: B<lond> forks off children processes that correspond to the other servers
8277: in the network. Management of these processes can be done at the
8278: parent process level or the child process level.
8279:
8280: B<logs/lond.log> is the location of log messages.
8281:
8282: The process management is now explained in terms of linux shell commands,
8283: subroutines internal to this code, and signal assignments:
8284:
8285: =over 4
8286:
8287: =item *
8288:
8289: PID is stored in B<logs/lond.pid>
8290:
8291: This is the process id number of the parent B<lond> process.
8292:
8293: =item *
8294:
8295: SIGTERM and SIGINT
8296:
8297: Parent signal assignment:
8298: $SIG{INT} = $SIG{TERM} = \&HUNTSMAN;
8299:
8300: Child signal assignment:
8301: $SIG{INT} = 'DEFAULT'; (and SIGTERM is DEFAULT also)
8302: (The child dies and a SIGALRM is sent to parent, awaking parent from slumber
8303: to restart a new child.)
8304:
8305: Command-line invocations:
8306: B<kill> B<-s> SIGTERM I<PID>
8307: B<kill> B<-s> SIGINT I<PID>
8308:
8309: Subroutine B<HUNTSMAN>:
8310: This is only invoked for the B<lond> parent I<PID>.
8311: This kills all the children, and then the parent.
8312: The B<lonc.pid> file is cleared.
8313:
8314: =item *
8315:
8316: SIGHUP
8317:
8318: Current bug:
8319: This signal can only be processed the first time
8320: on the parent process. Subsequent SIGHUP signals
8321: have no effect.
8322:
8323: Parent signal assignment:
8324: $SIG{HUP} = \&HUPSMAN;
8325:
8326: Child signal assignment:
8327: none (nothing happens)
8328:
8329: Command-line invocations:
8330: B<kill> B<-s> SIGHUP I<PID>
8331:
8332: Subroutine B<HUPSMAN>:
8333: This is only invoked for the B<lond> parent I<PID>,
8334: This kills all the children, and then the parent.
8335: The B<lond.pid> file is cleared.
8336:
8337: =item *
8338:
8339: SIGUSR1
8340:
8341: Parent signal assignment:
8342: $SIG{USR1} = \&USRMAN;
8343:
8344: Child signal assignment:
8345: $SIG{USR1}= \&logstatus;
8346:
8347: Command-line invocations:
8348: B<kill> B<-s> SIGUSR1 I<PID>
8349:
8350: Subroutine B<USRMAN>:
8351: When invoked for the B<lond> parent I<PID>,
8352: SIGUSR1 is sent to all the children, and the status of
8353: each connection is logged.
1.144 foxr 8354:
8355: =item *
8356:
8357: SIGUSR2
8358:
8359: Parent Signal assignment:
8360: $SIG{USR2} = \&UpdateHosts
8361:
8362: Child signal assignment:
8363: NONE
8364:
1.74 harris41 8365:
8366: =item *
8367:
8368: SIGCHLD
8369:
8370: Parent signal assignment:
8371: $SIG{CHLD} = \&REAPER;
8372:
8373: Child signal assignment:
8374: none
8375:
8376: Command-line invocations:
8377: B<kill> B<-s> SIGCHLD I<PID>
8378:
8379: Subroutine B<REAPER>:
8380: This is only invoked for the B<lond> parent I<PID>.
8381: Information pertaining to the child is removed.
8382: The socket port is cleaned up.
8383:
8384: =back
8385:
8386: B<SERVER-SIDE ACTIVITIES>
8387:
8388: Server-side information can be accepted in an encrypted or non-encrypted
8389: method.
8390:
8391: =over 4
8392:
8393: =item ping
8394:
8395: Query a client in the hosts.tab table; "Are you there?"
8396:
8397: =item pong
8398:
8399: Respond to a ping query.
8400:
8401: =item ekey
8402:
8403: Read in encrypted key, make cipher. Respond with a buildkey.
8404:
8405: =item load
8406:
8407: Respond with CPU load based on a computation upon /proc/loadavg.
8408:
8409: =item currentauth
8410:
8411: Reply with current authentication information (only over an
8412: encrypted channel).
8413:
8414: =item auth
8415:
8416: Only over an encrypted channel, reply as to whether a user's
8417: authentication information can be validated.
8418:
8419: =item passwd
8420:
8421: Allow for a password to be set.
8422:
8423: =item makeuser
8424:
8425: Make a user.
8426:
8427: =item passwd
8428:
8429: Allow for authentication mechanism and password to be changed.
8430:
8431: =item home
1.61 harris41 8432:
1.74 harris41 8433: Respond to a question "are you the home for a given user?"
8434:
8435: =item update
8436:
8437: Update contents of a subscribed resource.
8438:
8439: =item unsubscribe
8440:
8441: The server is unsubscribing from a resource.
8442:
8443: =item subscribe
8444:
8445: The server is subscribing to a resource.
8446:
8447: =item log
8448:
8449: Place in B<logs/lond.log>
8450:
8451: =item put
8452:
8453: stores hash in namespace
8454:
1.489.2.2 raeburn 8455: =item rolesput
1.74 harris41 8456:
8457: put a role into a user's environment
8458:
8459: =item get
8460:
8461: returns hash with keys from array
8462: reference filled in from namespace
8463:
8464: =item eget
8465:
8466: returns hash with keys from array
8467: reference filled in from namesp (encrypts the return communication)
8468:
8469: =item rolesget
8470:
8471: get a role from a user's environment
8472:
8473: =item del
8474:
8475: deletes keys out of array from namespace
8476:
8477: =item keys
8478:
8479: returns namespace keys
8480:
8481: =item dump
8482:
8483: dumps the complete (or key matching regexp) namespace into a hash
8484:
8485: =item store
8486:
8487: stores hash permanently
8488: for this url; hashref needs to be given and should be a \%hashname; the
8489: remaining args aren't required and if they aren't passed or are '' they will
8490: be derived from the ENV
8491:
8492: =item restore
8493:
8494: returns a hash for a given url
8495:
8496: =item querysend
8497:
8498: Tells client about the lonsql process that has been launched in response
8499: to a sent query.
8500:
8501: =item queryreply
8502:
8503: Accept information from lonsql and make appropriate storage in temporary
8504: file space.
8505:
8506: =item idput
8507:
8508: Defines usernames as corresponding to IDs. (These "IDs" are unique identifiers
8509: for each student, defined perhaps by the institutional Registrar.)
8510:
8511: =item idget
8512:
8513: Returns usernames corresponding to IDs. (These "IDs" are unique identifiers
8514: for each student, defined perhaps by the institutional Registrar.)
8515:
8516: =item tmpput
8517:
8518: Accept and store information in temporary space.
8519:
8520: =item tmpget
8521:
8522: Send along temporarily stored information.
8523:
8524: =item ls
8525:
8526: List part of a user's directory.
8527:
1.135 foxr 8528: =item pushtable
8529:
8530: Pushes a file in /home/httpd/lonTab directory. Currently limited to:
8531: hosts.tab and domain.tab. The old file is copied to *.tab.backup but
8532: must be restored manually in case of a problem with the new table file.
8533: pushtable requires that the request be encrypted and validated via
8534: ValidateManager. The form of the command is:
8535: enc:pushtable tablename <tablecontents> \n
8536: where pushtable, tablename and <tablecontents> will be encrypted, but \n is a
8537: cleartext newline.
8538:
1.74 harris41 8539: =item Hanging up (exit or init)
8540:
8541: What to do when a client tells the server that they (the client)
8542: are leaving the network.
8543:
8544: =item unknown command
8545:
8546: If B<lond> is sent an unknown command (not in the list above),
8547: it replys to the client "unknown_cmd".
1.135 foxr 8548:
1.74 harris41 8549:
8550: =item UNKNOWN CLIENT
8551:
8552: If the anti-spoofing algorithm cannot verify the client,
8553: the client is rejected (with a "refused" message sent
8554: to the client, and the connection is closed.
8555:
8556: =back
1.61 harris41 8557:
8558: =head1 PREREQUISITES
8559:
8560: IO::Socket
8561: IO::File
8562: Apache::File
8563: POSIX
8564: Crypt::IDEA
8565: LWP::UserAgent()
8566: GDBM_File
8567: Authen::Krb4
1.91 albertel 8568: Authen::Krb5
1.61 harris41 8569:
8570: =head1 COREQUISITES
8571:
8572: =head1 OSNAMES
8573:
8574: linux
8575:
8576: =head1 SCRIPT CATEGORIES
8577:
8578: Server/Process
8579:
8580: =cut
1.409 foxr 8581:
8582:
8583: =pod
8584:
8585: =head1 LOG MESSAGES
8586:
8587: The messages below can be emitted in the lond log. This log is located
8588: in ~httpd/perl/logs/lond.log Many log messages have HTML encapsulation
8589: to provide coloring if examined from inside a web page. Some do not.
8590: Where color is used, the colors are; Red for sometihhng to get excited
8591: about and to follow up on. Yellow for something to keep an eye on to
8592: be sure it does not get worse, Green,and Blue for informational items.
8593:
8594: In the discussions below, sometimes reference is made to ~httpd
8595: when describing file locations. There isn't really an httpd
8596: user, however there is an httpd directory that gets installed in the
8597: place that user home directories go. On linux, this is usually
8598: (always?) /home/httpd.
8599:
8600:
8601: Some messages are colorless. These are usually (not always)
8602: Green/Blue color level messages.
8603:
8604: =over 2
8605:
8606: =item (Red) LocalConnection rejecting non local: <ip> ne 127.0.0.1
8607:
8608: A local connection negotiation was attempted by
8609: a host whose IP address was not 127.0.0.1.
8610: The socket is closed and the child will exit.
8611: lond has three ways to establish an encyrption
8612: key with a client:
8613:
8614: =over 2
8615:
8616: =item local
8617:
8618: The key is written and read from a file.
8619: This is only valid for connections from localhost.
8620:
8621: =item insecure
8622:
8623: The key is generated by the server and
8624: transmitted to the client.
8625:
8626: =item ssl (secure)
8627:
8628: An ssl connection is negotiated with the client,
8629: the key is generated by the server and sent to the
8630: client across this ssl connection before the
8631: ssl connectionis terminated and clear text
8632: transmission resumes.
8633:
8634: =back
8635:
8636: =item (Red) LocalConnection: caller is insane! init = <init> and type = <type>
8637:
8638: The client is local but has not sent an initialization
8639: string that is the literal "init:local" The connection
8640: is closed and the child exits.
8641:
8642: =item Red CRITICAL Can't get key file <error>
8643:
8644: SSL key negotiation is being attempted but the call to
8645: lonssl::KeyFile failed. This usually means that the
8646: configuration file is not correctly defining or protecting
8647: the directories/files lonCertificateDirectory or
8648: lonnetPrivateKey
8649: <error> is a string that describes the reason that
8650: the key file could not be located.
8651:
8652: =item (Red) CRITICAL Can't get certificates <error>
8653:
8654: SSL key negotiation failed because we were not able to retrives our certificate
8655: or the CA's certificate in the call to lonssl::CertificateFile
8656: <error> is the textual reason this failed. Usual reasons:
8657:
8658: =over 2
8659:
8660: =item Apache config file for loncapa incorrect:
8661:
8662: one of the variables
8663: lonCertificateDirectory, lonnetCertificateAuthority, or lonnetCertificate
8664: undefined or incorrect
8665:
8666: =item Permission error:
8667:
8668: The directory pointed to by lonCertificateDirectory is not readable by lond
8669:
8670: =item Permission error:
8671:
8672: Files in the directory pointed to by lonCertificateDirectory are not readable by lond.
8673:
8674: =item Installation error:
8675:
8676: Either the certificate authority file or the certificate have not
8677: been installed in lonCertificateDirectory.
8678:
8679: =item (Red) CRITICAL SSL Socket promotion failed: <err>
8680:
8681: The promotion of the connection from plaintext to SSL failed
8682: <err> is the reason for the failure. There are two
8683: system calls involved in the promotion (one of which failed),
8684: a dup to produce
8685: a second fd on the raw socket over which the encrypted data
8686: will flow and IO::SOcket::SSL->new_from_fd which creates
8687: the SSL connection on the duped fd.
8688:
8689: =item (Blue) WARNING client did not respond to challenge
8690:
8691: This occurs on an insecure (non SSL) connection negotiation request.
8692: lond generates some number from the time, the PID and sends it to
8693: the client. The client must respond by echoing this information back.
8694: If the client does not do so, that's a violation of the challenge
8695: protocols and the connection will be failed.
8696:
8697: =item (Red) No manager table. Nobody can manage!!
8698:
8699: lond has the concept of privileged hosts that
8700: can perform remote management function such
8701: as update the hosts.tab. The manager hosts
8702: are described in the
8703: ~httpd/lonTabs/managers.tab file.
8704: this message is logged if this file is missing.
8705:
8706:
8707: =item (Green) Registering manager <dnsname> as <cluster_name> with <ipaddress>
8708:
8709: Reports the successful parse and registration
8710: of a specific manager.
8711:
8712: =item Green existing host <clustername:dnsname>
8713:
8714: The manager host is already defined in the hosts.tab
8715: the information in that table, rather than the info in the
8716: manager table will be used to determine the manager's ip.
8717:
8718: =item (Red) Unable to craete <filename>
8719:
8720: lond has been asked to create new versions of an administrative
8721: file (by a manager). When this is done, the new file is created
8722: in a temp file and then renamed into place so that there are always
8723: usable administrative files, even if the update fails. This failure
8724: message means that the temp file could not be created.
8725: The update is abandoned, and the old file is available for use.
8726:
8727: =item (Green) CopyFile from <oldname> to <newname> failed
8728:
8729: In an update of administrative files, the copy of the existing file to a
8730: backup file failed. The installation of the new file may still succeed,
8731: but there will not be a back up file to rever to (this should probably
8732: be yellow).
8733:
8734: =item (Green) Pushfile: backed up <oldname> to <newname>
8735:
8736: See above, the backup of the old administrative file succeeded.
8737:
8738: =item (Red) Pushfile: Unable to install <filename> <reason>
8739:
8740: The new administrative file could not be installed. In this case,
8741: the old administrative file is still in use.
8742:
8743: =item (Green) Installed new < filename>.
8744:
8745: The new administrative file was successfullly installed.
8746:
8747: =item (Red) Reinitializing lond pid=<pid>
8748:
8749: The lonc child process <pid> will be sent a USR2
8750: signal.
8751:
8752: =item (Red) Reinitializing self
8753:
8754: We've been asked to re-read our administrative files,and
8755: are doing so.
8756:
8757: =item (Yellow) error:Invalid process identifier <ident>
8758:
8759: A reinit command was received, but the target part of the
8760: command was not valid. It must be either
8761: 'lond' or 'lonc' but was <ident>
8762:
8763: =item (Green) isValideditCommand checking: Command = <command> Key = <key> newline = <newline>
8764:
8765: Checking to see if lond has been handed a valid edit
8766: command. It is possible the edit command is not valid
8767: in that case there are no log messages to indicate that.
8768:
8769: =item Result of password change for <username> pwchange_success
8770:
8771: The password for <username> was
8772: successfully changed.
8773:
8774: =item Unable to open <user> passwd to change password
8775:
8776: Could not rewrite the
8777: internal password file for a user
8778:
8779: =item Result of password change for <user> : <result>
8780:
8781: A unix password change for <user> was attempted
8782: and the pipe returned <result>
8783:
8784: =item LWP GET: <message> for <fname> (<remoteurl>)
8785:
8786: The lightweight process fetch for a resource failed
8787: with <message> the local filename that should
8788: have existed/been created was <fname> the
8789: corresponding URI: <remoteurl> This is emitted in several
8790: places.
8791:
8792: =item Unable to move <transname> to <destname>
8793:
8794: From fetch_user_file_handler - the user file was replicated but could not
8795: be mv'd to its final location.
8796:
8797: =item Looking for <domain> <username>
8798:
8799: From user_has_session_handler - This should be a Debug call instead
8800: it indicates lond is about to check whether the specified user has a
8801: session active on the specified domain on the local host.
8802:
8803: =item Client <ip> (<name>) hanging up: <input>
8804:
8805: lond has been asked to exit by its client. The <ip> and <name> identify the
8806: client systemand <input> is the full exit command sent to the server.
8807:
8808: =item Red CRITICAL: ABNORMAL EXIT. child <pid> for server <hostname> died through a crass with this error->[<message>].
8809:
8810: A lond child terminated. NOte that this termination can also occur when the
8811: child receives the QUIT or DIE signals. <pid> is the process id of the child,
8812: <hostname> the host lond is working for, and <message> the reason the child died
8813: to the best of our ability to get it (I would guess that any numeric value
8814: represents and errno value). This is immediately followed by
8815:
8816: =item Famous last words: Catching exception - <log>
8817:
8818: Where log is some recent information about the state of the child.
8819:
8820: =item Red CRITICAL: TIME OUT <pid>
8821:
8822: Some timeout occured for server <pid>. THis is normally a timeout on an LWP
8823: doing an HTTP::GET.
8824:
8825: =item child <pid> died
8826:
8827: The reaper caught a SIGCHILD for the lond child process <pid>
8828: This should be modified to also display the IP of the dying child
8829: $children{$pid}
8830:
8831: =item Unknown child 0 died
8832: A child died but the wait for it returned a pid of zero which really should not
8833: ever happen.
8834:
8835: =item Child <which> - <pid> looks like we missed it's death
8836:
8837: When a sigchild is received, the reaper process checks all children to see if they are
8838: alive. If children are dying quite quickly, the lack of signal queuing can mean
8839: that a signal hearalds the death of more than one child. If so this message indicates
8840: which other one died. <which> is the ip of a dead child
8841:
8842: =item Free socket: <shutdownretval>
8843:
8844: The HUNTSMAN sub was called due to a SIGINT in a child process. The socket is being shutdown.
8845: for whatever reason, <shutdownretval> is printed but in fact shutdown() is not documented
8846: to return anything. This is followed by:
8847:
8848: =item Red CRITICAL: Shutting down
8849:
8850: Just prior to exit.
8851:
8852: =item Free socket: <shutdownretval>
8853:
8854: The HUPSMAN sub was called due to a SIGHUP. all children get killsed, and lond execs itself.
8855: This is followed by:
8856:
8857: =item (Red) CRITICAL: Restarting
8858:
8859: lond is about to exec itself to restart.
8860:
8861: =item (Blue) Updating connections
8862:
8863: (In response to a USR2). All the children (except the one for localhost)
8864: are about to be killed, the hosts tab reread, and Apache reloaded via apachereload.
8865:
8866: =item (Blue) UpdateHosts killing child <pid> for ip <ip>
8867:
8868: Due to USR2 as above.
8869:
8870: =item (Green) keeping child for ip <ip> (pid = <pid>)
8871:
8872: In response to USR2 as above, the child indicated is not being restarted because
8873: it's assumed that we'll always need a child for the localhost.
8874:
8875:
8876: =item Going to check on the children
8877:
8878: Parent is about to check on the health of the child processes.
8879: Note that this is in response to a USR1 sent to the parent lond.
8880: there may be one or more of the next two messages:
8881:
8882: =item <pid> is dead
8883:
8884: A child that we have in our child hash as alive has evidently died.
8885:
8886: =item Child <pid> did not respond
8887:
8888: In the health check the child <pid> did not update/produce a pid_.txt
8889: file when sent it's USR1 signal. That process is killed with a 9 signal, as it's
8890: assumed to be hung in some un-fixable way.
8891:
8892: =item Finished checking children
8893:
8894: Master processs's USR1 processing is cojmplete.
8895:
8896: =item (Red) CRITICAL: ------- Starting ------
8897:
8898: (There are more '-'s on either side). Lond has forked itself off to
8899: form a new session and is about to start actual initialization.
8900:
8901: =item (Green) Attempting to start child (<client>)
8902:
8903: Started a new child process for <client>. Client is IO::Socket object
8904: connected to the child. This was as a result of a TCP/IP connection from a client.
8905:
8906: =item Unable to determine who caller was, getpeername returned nothing
8907:
8908: In child process initialization. either getpeername returned undef or
8909: a zero sized object was returned. Processing continues, but in my opinion,
8910: this should be cause for the child to exit.
8911:
8912: =item Unable to determine clientip
8913:
8914: In child process initialization. The peer address from getpeername was not defined.
8915: The client address is stored as "Unavailable" and processing continues.
8916:
8917: =item (Yellow) INFO: Connection <ip> <name> connection type = <type>
8918:
8919: In child initialization. A good connectionw as received from <ip>.
8920:
8921: =over 2
8922:
8923: =item <name>
8924:
8925: is the name of the client from hosts.tab.
8926:
8927: =item <type>
8928:
8929: Is the connection type which is either
8930:
8931: =over 2
8932:
8933: =item manager
8934:
8935: The connection is from a manager node, not in hosts.tab
8936:
8937: =item client
8938:
8939: the connection is from a non-manager in the hosts.tab
8940:
8941: =item both
8942:
8943: The connection is from a manager in the hosts.tab.
8944:
8945: =back
8946:
8947: =back
8948:
8949: =item (Blue) Certificates not installed -- trying insecure auth
8950:
8951: One of the certificate file, key file or
8952: certificate authority file could not be found for a client attempting
8953: SSL connection intiation. COnnection will be attemptied in in-secure mode.
8954: (this would be a system with an up to date lond that has not gotten a
8955: certificate from us).
8956:
8957: =item (Green) Successful local authentication
8958:
8959: A local connection successfully negotiated the encryption key.
8960: In this case the IDEA key is in a file (that is hopefully well protected).
8961:
8962: =item (Green) Successful ssl authentication with <client>
8963:
8964: The client (<client> is the peer's name in hosts.tab), has successfully
8965: negotiated an SSL connection with this child process.
8966:
8967: =item (Green) Successful insecure authentication with <client>
8968:
8969:
8970: The client has successfully negotiated an insecure connection withthe child process.
8971:
8972: =item (Yellow) Attempted insecure connection disallowed
8973:
8974: The client attempted and failed to successfully negotiate a successful insecure
8975: connection. This can happen either because the variable londAllowInsecure is false
8976: or undefined, or becuse the child did not successfully echo back the challenge
8977: string.
8978:
8979:
8980: =back
8981:
1.441 raeburn 8982: =back
8983:
1.409 foxr 8984:
8985: =cut
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