Annotation of loncom/lond, revision 1.489.2.35.2.2
1.1 albertel 1: #!/usr/bin/perl
2: # The LearningOnline Network
3: # lond "LON Daemon" Server (port "LOND" 5663)
1.60 www 4: #
1.489.2.35.2. (raeburn 5:): # $Id: lond,v 1.489.2.35.2.1 2020/01/13 14:05:54 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:
1.489.2.35.2. (raeburn 66:): my $VERSION='$Revision: 1.489.2.35.2.1 $'; #' 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{$what}{'lonBalancer'})) {
1.489.2.31 raeburn 1798: if ($dist =~ /^(centos|rhes|fedora|scientific|oracle)/) {
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:
3539: # Store a set of key=value pairs associated with a versioned name.
3540: #
3541: # Parameters:
3542: # $cmd - Request command keyword.
3543: # $tail - Tail of the request. This is a colon
3544: # separated list containing:
3545: # domain/user - User and authentication domain.
3546: # namespace - Name of the database being modified
3547: # rid - Resource keyword to modify.
3548: # what - new value associated with rid.
1.489.2.17 raeburn 3549: # laststore - (optional) version=timestamp
3550: # for most recent transaction for rid
3551: # in namespace, when cstore was called
1.231 foxr 3552: #
3553: # $client - Socket open on the client.
3554: #
3555: #
3556: # Returns:
3557: # 1 (keep on processing).
3558: # Side-Effects:
3559: # Writes to the client
1.489.2.17 raeburn 3560: # Successful storage will cause either 'ok', or, if $laststore was included
3561: # in the tail of the request, and the version number for the last transaction
3562: # is larger than the version in $laststore, delay:$numtrans , where $numtrans
3563: # is the number of store evevnts recorded for rid in namespace since
3564: # lonnet::store() was called by the client.
3565: #
1.231 foxr 3566: sub store_handler {
3567: my ($cmd, $tail, $client) = @_;
3568:
3569: my $userinput = "$cmd:$tail";
3570:
1.489.2.17 raeburn 3571: chomp($tail);
3572: my ($udom,$uname,$namespace,$rid,$what,$laststore) =split(/:/,$tail);
1.231 foxr 3573: if ($namespace ne 'roles') {
3574:
3575: my @pairs=split(/\&/,$what);
3576: my $hashref = &tie_user_hash($udom, $uname, $namespace,
1.268 albertel 3577: &GDBM_WRCREAT(), "S",
1.231 foxr 3578: "$rid:$what");
3579: if ($hashref) {
3580: my $now = time;
1.489.2.17 raeburn 3581: my $numtrans;
3582: if ($laststore) {
3583: my ($previousversion,$previoustime) = split(/\=/,$laststore);
3584: my ($lastversion,$lasttime) = (0,0);
3585: $lastversion = $hashref->{"version:$rid"};
3586: if ($lastversion) {
3587: $lasttime = $hashref->{"$lastversion:$rid:timestamp"};
3588: }
3589: if (($previousversion) && ($previousversion !~ /\D/)) {
3590: if (($lastversion > $previousversion) && ($lasttime >= $previoustime)) {
3591: $numtrans = $lastversion - $previousversion;
3592: }
3593: } elsif ($lastversion) {
3594: $numtrans = $lastversion;
3595: }
3596: if ($numtrans) {
3597: $numtrans =~ s/D//g;
3598: }
3599: }
3600:
1.231 foxr 3601: $hashref->{"version:$rid"}++;
3602: my $version=$hashref->{"version:$rid"};
3603: my $allkeys='';
3604: foreach my $pair (@pairs) {
3605: my ($key,$value)=split(/=/,$pair);
3606: $allkeys.=$key.':';
3607: $hashref->{"$version:$rid:$key"}=$value;
3608: }
3609: $hashref->{"$version:$rid:timestamp"}=$now;
3610: $allkeys.='timestamp';
3611: $hashref->{"$version:keys:$rid"}=$allkeys;
1.311 albertel 3612: if (&untie_user_hash($hashref)) {
1.489.2.17 raeburn 3613: my $msg = 'ok';
3614: if ($numtrans) {
3615: $msg = 'delay:'.$numtrans;
3616: }
3617: &Reply($client, "$msg\n", $userinput);
1.231 foxr 3618: } else {
3619: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
3620: "while attempting store\n", $userinput);
3621: }
3622: } else {
3623: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
3624: "while attempting store\n", $userinput);
3625: }
3626: } else {
3627: &Failure($client, "refused\n", $userinput);
3628: }
3629:
3630: return 1;
3631: }
3632: ®ister_handler("store", \&store_handler, 0, 1, 0);
1.263 albertel 3633:
1.323 albertel 3634: # Modify a set of key=value pairs associated with a versioned name.
3635: #
3636: # Parameters:
3637: # $cmd - Request command keyword.
3638: # $tail - Tail of the request. This is a colon
3639: # separated list containing:
3640: # domain/user - User and authentication domain.
3641: # namespace - Name of the database being modified
3642: # rid - Resource keyword to modify.
3643: # v - Version item to modify
3644: # what - new value associated with rid.
3645: #
3646: # $client - Socket open on the client.
3647: #
3648: #
3649: # Returns:
3650: # 1 (keep on processing).
3651: # Side-Effects:
3652: # Writes to the client
3653: sub putstore_handler {
3654: my ($cmd, $tail, $client) = @_;
3655:
3656: my $userinput = "$cmd:$tail";
3657:
3658: my ($udom,$uname,$namespace,$rid,$v,$what) =split(/:/,$tail);
3659: if ($namespace ne 'roles') {
3660:
3661: chomp($what);
3662: my $hashref = &tie_user_hash($udom, $uname, $namespace,
3663: &GDBM_WRCREAT(), "M",
3664: "$rid:$v:$what");
3665: if ($hashref) {
3666: my $now = time;
3667: my %data = &hash_extract($what);
3668: my @allkeys;
3669: while (my($key,$value) = each(%data)) {
3670: push(@allkeys,$key);
3671: $hashref->{"$v:$rid:$key"} = $value;
3672: }
3673: my $allkeys = join(':',@allkeys);
3674: $hashref->{"$v:keys:$rid"}=$allkeys;
3675:
3676: if (&untie_user_hash($hashref)) {
3677: &Reply($client, "ok\n", $userinput);
3678: } else {
3679: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
3680: "while attempting store\n", $userinput);
3681: }
3682: } else {
3683: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
3684: "while attempting store\n", $userinput);
3685: }
3686: } else {
3687: &Failure($client, "refused\n", $userinput);
3688: }
3689:
3690: return 1;
3691: }
3692: ®ister_handler("putstore", \&putstore_handler, 0, 1, 0);
3693:
3694: sub hash_extract {
3695: my ($str)=@_;
3696: my %hash;
3697: foreach my $pair (split(/\&/,$str)) {
3698: my ($key,$value)=split(/=/,$pair);
3699: $hash{$key}=$value;
3700: }
3701: return (%hash);
3702: }
3703: sub hash_to_str {
3704: my ($hash_ref)=@_;
3705: my $str;
3706: foreach my $key (keys(%$hash_ref)) {
3707: $str.=$key.'='.$hash_ref->{$key}.'&';
3708: }
3709: $str=~s/\&$//;
3710: return $str;
3711: }
3712:
1.231 foxr 3713: #
3714: # Dump out all versions of a resource that has key=value pairs associated
3715: # with it for each version. These resources are built up via the store
3716: # command.
3717: #
3718: # Parameters:
3719: # $cmd - Command keyword.
3720: # $tail - Remainder of the request which consists of:
3721: # domain/user - User and auth. domain.
3722: # namespace - name of resource database.
3723: # rid - Resource id.
3724: # $client - socket open on the client.
3725: #
3726: # Returns:
3727: # 1 indicating the caller should not yet exit.
3728: # Side-effects:
3729: # Writes a reply to the client.
3730: # The reply is a string of the following shape:
3731: # version=current&version:keys=k1:k2...&1:k1=v1&1:k2=v2...
3732: # Where the 1 above represents version 1.
3733: # this continues for all pairs of keys in all versions.
3734: #
3735: #
3736: #
3737: #
3738: sub restore_handler {
3739: my ($cmd, $tail, $client) = @_;
3740:
3741: my $userinput = "$cmd:$tail"; # Only used for logging purposes.
1.351 banghart 3742: my ($udom,$uname,$namespace,$rid) = split(/:/,$tail);
1.352 albertel 3743: $namespace=~s/\//\_/g;
1.350 albertel 3744: $namespace = &LONCAPA::clean_username($namespace);
1.349 albertel 3745:
1.231 foxr 3746: chomp($rid);
3747: my $qresult='';
1.309 albertel 3748: my $hashref = &tie_user_hash($udom, $uname, $namespace, &GDBM_READER());
3749: if ($hashref) {
3750: my $version=$hashref->{"version:$rid"};
1.231 foxr 3751: $qresult.="version=$version&";
3752: my $scope;
3753: for ($scope=1;$scope<=$version;$scope++) {
1.309 albertel 3754: my $vkeys=$hashref->{"$scope:keys:$rid"};
1.231 foxr 3755: my @keys=split(/:/,$vkeys);
3756: my $key;
3757: $qresult.="$scope:keys=$vkeys&";
3758: foreach $key (@keys) {
1.309 albertel 3759: $qresult.="$scope:$key=".$hashref->{"$scope:$rid:$key"}."&";
1.231 foxr 3760: }
3761: }
1.311 albertel 3762: if (&untie_user_hash($hashref)) {
1.231 foxr 3763: $qresult=~s/\&$//;
1.387 albertel 3764: &Reply( $client, \$qresult, $userinput);
1.231 foxr 3765: } else {
3766: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
3767: "while attempting restore\n", $userinput);
3768: }
3769: } else {
3770: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
3771: "while attempting restore\n", $userinput);
3772: }
3773:
3774: return 1;
3775:
3776:
3777: }
3778: ®ister_handler("restore", \&restore_handler, 0,1,0);
1.234 foxr 3779:
3780: #
1.324 raeburn 3781: # Add a chat message to a synchronous discussion board.
1.234 foxr 3782: #
3783: # Parameters:
3784: # $cmd - Request keyword.
3785: # $tail - Tail of the command. A colon separated list
3786: # containing:
3787: # cdom - Domain on which the chat board lives
1.324 raeburn 3788: # cnum - Course containing the chat board.
3789: # newpost - Body of the posting.
3790: # group - Optional group, if chat board is only
3791: # accessible in a group within the course
1.234 foxr 3792: # $client - Socket open on the client.
3793: # Returns:
3794: # 1 - Indicating caller should keep on processing.
3795: #
3796: # Side-effects:
3797: # writes a reply to the client.
3798: #
3799: #
3800: sub send_chat_handler {
3801: my ($cmd, $tail, $client) = @_;
3802:
3803:
3804: my $userinput = "$cmd:$tail";
3805:
1.324 raeburn 3806: my ($cdom,$cnum,$newpost,$group)=split(/\:/,$tail);
3807: &chat_add($cdom,$cnum,$newpost,$group);
1.234 foxr 3808: &Reply($client, "ok\n", $userinput);
3809:
3810: return 1;
3811: }
3812: ®ister_handler("chatsend", \&send_chat_handler, 0, 1, 0);
1.263 albertel 3813:
1.234 foxr 3814: #
1.324 raeburn 3815: # Retrieve the set of chat messages from a discussion board.
1.234 foxr 3816: #
3817: # Parameters:
3818: # $cmd - Command keyword that initiated the request.
3819: # $tail - Remainder of the request after the command
3820: # keyword. In this case a colon separated list of
3821: # chat domain - Which discussion board.
3822: # chat id - Discussion thread(?)
3823: # domain/user - Authentication domain and username
3824: # of the requesting person.
1.324 raeburn 3825: # group - Optional course group containing
3826: # the board.
1.234 foxr 3827: # $client - Socket open on the client program.
3828: # Returns:
3829: # 1 - continue processing
3830: # Side effects:
3831: # Response is written to the client.
3832: #
3833: sub retrieve_chat_handler {
3834: my ($cmd, $tail, $client) = @_;
3835:
3836:
3837: my $userinput = "$cmd:$tail";
3838:
1.324 raeburn 3839: my ($cdom,$cnum,$udom,$uname,$group)=split(/\:/,$tail);
1.234 foxr 3840: my $reply='';
1.324 raeburn 3841: foreach (&get_chat($cdom,$cnum,$udom,$uname,$group)) {
1.234 foxr 3842: $reply.=&escape($_).':';
3843: }
3844: $reply=~s/\:$//;
1.387 albertel 3845: &Reply($client, \$reply, $userinput);
1.234 foxr 3846:
3847:
3848: return 1;
3849: }
3850: ®ister_handler("chatretr", \&retrieve_chat_handler, 0, 1, 0);
3851:
3852: #
3853: # Initiate a query of an sql database. SQL query repsonses get put in
3854: # a file for later retrieval. This prevents sql query results from
3855: # bottlenecking the system. Note that with loncnew, perhaps this is
3856: # less of an issue since multiple outstanding requests can be concurrently
3857: # serviced.
3858: #
3859: # Parameters:
3860: # $cmd - COmmand keyword that initiated the request.
3861: # $tail - Remainder of the command after the keyword.
3862: # For this function, this consists of a query and
3863: # 3 arguments that are self-documentingly labelled
3864: # in the original arg1, arg2, arg3.
3865: # $client - Socket open on the client.
3866: # Return:
3867: # 1 - Indicating processing should continue.
3868: # Side-effects:
3869: # a reply is written to $client.
3870: #
3871: sub send_query_handler {
3872: my ($cmd, $tail, $client) = @_;
3873:
3874:
3875: my $userinput = "$cmd:$tail";
3876:
3877: my ($query,$arg1,$arg2,$arg3)=split(/\:/,$tail);
3878: $query=~s/\n*$//g;
1.489.2.27 raeburn 3879: if (($query eq 'usersearch') || ($query eq 'instdirsearch')) {
3880: my $usersearchconf = &get_usersearch_config($currentdomainid,'directorysrch');
3881: my $earlyout;
3882: if (ref($usersearchconf) eq 'HASH') {
3883: if ($currentdomainid eq $clienthomedom) {
3884: if ($query eq 'usersearch') {
3885: if ($usersearchconf->{'lcavailable'} eq '0') {
3886: $earlyout = 1;
3887: }
3888: } else {
3889: if ($usersearchconf->{'available'} eq '0') {
3890: $earlyout = 1;
3891: }
3892: }
3893: } else {
3894: if ($query eq 'usersearch') {
3895: if ($usersearchconf->{'lclocalonly'}) {
3896: $earlyout = 1;
3897: }
3898: } else {
3899: if ($usersearchconf->{'localonly'}) {
3900: $earlyout = 1;
3901: }
3902: }
3903: }
3904: }
3905: if ($earlyout) {
3906: &Reply($client, "query_not_authorized\n");
3907: return 1;
3908: }
3909: }
1.234 foxr 3910: &Reply($client, "". &sql_reply("$clientname\&$query".
3911: "\&$arg1"."\&$arg2"."\&$arg3")."\n",
3912: $userinput);
3913:
3914: return 1;
3915: }
3916: ®ister_handler("querysend", \&send_query_handler, 0, 1, 0);
3917:
3918: #
3919: # Add a reply to an sql query. SQL queries are done asyncrhonously.
3920: # The query is submitted via a "querysend" transaction.
3921: # There it is passed on to the lonsql daemon, queued and issued to
3922: # mysql.
3923: # This transaction is invoked when the sql transaction is complete
3924: # it stores the query results in flie and indicates query completion.
3925: # presumably local software then fetches this response... I'm guessing
3926: # the sequence is: lonc does a querysend, we ask lonsql to do it.
3927: # lonsql on completion of the query interacts with the lond of our
3928: # client to do a query reply storing two files:
3929: # - id - The results of the query.
3930: # - id.end - Indicating the transaction completed.
3931: # NOTE: id is a unique id assigned to the query and querysend time.
3932: # Parameters:
3933: # $cmd - Command keyword that initiated this request.
3934: # $tail - Remainder of the tail. In this case that's a colon
3935: # separated list containing the query Id and the
3936: # results of the query.
3937: # $client - Socket open on the client.
3938: # Return:
3939: # 1 - Indicating that we should continue processing.
3940: # Side effects:
3941: # ok written to the client.
3942: #
3943: sub reply_query_handler {
3944: my ($cmd, $tail, $client) = @_;
3945:
3946:
3947: my $userinput = "$cmd:$tail";
3948:
1.339 albertel 3949: my ($id,$reply)=split(/:/,$tail);
1.234 foxr 3950: my $store;
3951: my $execdir=$perlvar{'lonDaemons'};
3952: if ($store=IO::File->new(">$execdir/tmp/$id")) {
3953: $reply=~s/\&/\n/g;
3954: print $store $reply;
3955: close $store;
3956: my $store2=IO::File->new(">$execdir/tmp/$id.end");
3957: print $store2 "done\n";
3958: close $store2;
3959: &Reply($client, "ok\n", $userinput);
3960: } else {
3961: &Failure($client, "error: ".($!+0)
3962: ." IO::File->new Failed ".
3963: "while attempting queryreply\n", $userinput);
3964: }
3965:
3966:
3967: return 1;
3968: }
3969: ®ister_handler("queryreply", \&reply_query_handler, 0, 1, 0);
3970:
3971: #
3972: # Process the courseidput request. Not quite sure what this means
3973: # at the system level sense. It appears a gdbm file in the
3974: # /home/httpd/lonUsers/$domain/nohist_courseids is tied and
3975: # a set of entries made in that database.
3976: #
3977: # Parameters:
3978: # $cmd - The command keyword that initiated this request.
3979: # $tail - Tail of the command. In this case consists of a colon
3980: # separated list contaning the domain to apply this to and
3981: # an ampersand separated list of keyword=value pairs.
1.272 raeburn 3982: # Each value is a colon separated list that includes:
3983: # description, institutional code and course owner.
3984: # For backward compatibility with versions included
3985: # in LON-CAPA 1.1.X (and earlier) and 1.2.X, institutional
3986: # code and/or course owner are preserved from the existing
3987: # record when writing a new record in response to 1.1 or
3988: # 1.2 implementations of lonnet::flushcourselogs().
3989: #
1.234 foxr 3990: # $client - Socket open on the client.
3991: # Returns:
3992: # 1 - indicating that processing should continue
3993: #
3994: # Side effects:
3995: # reply is written to the client.
3996: #
3997: sub put_course_id_handler {
3998: my ($cmd, $tail, $client) = @_;
3999:
4000:
4001: my $userinput = "$cmd:$tail";
4002:
1.266 raeburn 4003: my ($udom, $what) = split(/:/, $tail,2);
1.234 foxr 4004: chomp($what);
4005: my $now=time;
4006: my @pairs=split(/\&/,$what);
4007:
4008: my $hashref = &tie_domain_hash($udom, "nohist_courseids", &GDBM_WRCREAT());
4009: if ($hashref) {
4010: foreach my $pair (@pairs) {
1.271 raeburn 4011: my ($key,$courseinfo) = split(/=/,$pair,2);
4012: $courseinfo =~ s/=/:/g;
1.384 raeburn 4013: if (defined($hashref->{$key})) {
4014: my $value = &Apache::lonnet::thaw_unescape($hashref->{$key});
4015: if (ref($value) eq 'HASH') {
4016: my @items = ('description','inst_code','owner','type');
4017: my @new_items = split(/:/,$courseinfo,-1);
4018: my %storehash;
4019: for (my $i=0; $i<@new_items; $i++) {
1.391 raeburn 4020: $storehash{$items[$i]} = &unescape($new_items[$i]);
1.384 raeburn 4021: }
4022: $hashref->{$key} =
4023: &Apache::lonnet::freeze_escape(\%storehash);
4024: my $unesc_key = &unescape($key);
4025: $hashref->{&escape('lasttime:'.$unesc_key)} = $now;
4026: next;
1.383 raeburn 4027: }
1.384 raeburn 4028: }
4029: my @current_items = split(/:/,$hashref->{$key},-1);
4030: shift(@current_items); # remove description
4031: pop(@current_items); # remove last access
4032: my $numcurrent = scalar(@current_items);
4033: if ($numcurrent > 3) {
4034: $numcurrent = 3;
4035: }
4036: my @new_items = split(/:/,$courseinfo,-1);
4037: my $numnew = scalar(@new_items);
4038: if ($numcurrent > 0) {
4039: if ($numnew <= $numcurrent) { # flushcourselogs() from pre 2.2
4040: for (my $j=$numcurrent-$numnew; $j>=0; $j--) {
4041: $courseinfo .= ':'.$current_items[$numcurrent-$j-1];
1.333 raeburn 4042: }
1.272 raeburn 4043: }
4044: }
1.384 raeburn 4045: $hashref->{$key}=$courseinfo.':'.$now;
1.234 foxr 4046: }
1.311 albertel 4047: if (&untie_domain_hash($hashref)) {
1.253 foxr 4048: &Reply( $client, "ok\n", $userinput);
1.234 foxr 4049: } else {
1.253 foxr 4050: &Failure($client, "error: ".($!+0)
1.234 foxr 4051: ." untie(GDBM) Failed ".
4052: "while attempting courseidput\n", $userinput);
4053: }
4054: } else {
1.253 foxr 4055: &Failure($client, "error: ".($!+0)
1.234 foxr 4056: ." tie(GDBM) Failed ".
4057: "while attempting courseidput\n", $userinput);
4058: }
4059:
4060: return 1;
4061: }
4062: ®ister_handler("courseidput", \&put_course_id_handler, 0, 1, 0);
4063:
1.383 raeburn 4064: sub put_course_id_hash_handler {
4065: my ($cmd, $tail, $client) = @_;
4066: my $userinput = "$cmd:$tail";
1.384 raeburn 4067: my ($udom,$mode,$what) = split(/:/, $tail,3);
1.383 raeburn 4068: chomp($what);
4069: my $now=time;
4070: my @pairs=split(/\&/,$what);
1.384 raeburn 4071: my $hashref = &tie_domain_hash($udom, "nohist_courseids", &GDBM_WRCREAT());
1.383 raeburn 4072: if ($hashref) {
4073: foreach my $pair (@pairs) {
4074: my ($key,$value)=split(/=/,$pair);
1.384 raeburn 4075: my $unesc_key = &unescape($key);
4076: if ($mode ne 'timeonly') {
4077: if (!defined($hashref->{&escape('lasttime:'.$unesc_key)})) {
4078: my $curritems = &Apache::lonnet::thaw_unescape($key);
4079: if (ref($curritems) ne 'HASH') {
4080: my @current_items = split(/:/,$hashref->{$key},-1);
4081: my $lasttime = pop(@current_items);
4082: $hashref->{&escape('lasttime:'.$unesc_key)} = $lasttime;
4083: } else {
4084: $hashref->{&escape('lasttime:'.$unesc_key)} = '';
4085: }
4086: }
4087: $hashref->{$key} = $value;
4088: }
4089: if ($mode ne 'notime') {
4090: $hashref->{&escape('lasttime:'.$unesc_key)} = $now;
4091: }
1.383 raeburn 4092: }
4093: if (&untie_domain_hash($hashref)) {
4094: &Reply($client, "ok\n", $userinput);
4095: } else {
4096: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4097: "while attempting courseidputhash\n", $userinput);
4098: }
4099: } else {
4100: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
4101: "while attempting courseidputhash\n", $userinput);
4102: }
4103: return 1;
4104: }
4105: ®ister_handler("courseidputhash", \&put_course_id_hash_handler, 0, 1, 0);
4106:
1.234 foxr 4107: # Retrieves the value of a course id resource keyword pattern
4108: # defined since a starting date. Both the starting date and the
4109: # keyword pattern are optional. If the starting date is not supplied it
4110: # is treated as the beginning of time. If the pattern is not found,
4111: # it is treatred as "." matching everything.
4112: #
4113: # Parameters:
4114: # $cmd - Command keyword that resulted in us being dispatched.
4115: # $tail - The remainder of the command that, in this case, consists
4116: # of a colon separated list of:
4117: # domain - The domain in which the course database is
4118: # defined.
4119: # since - Optional parameter describing the minimum
4120: # time of definition(?) of the resources that
4121: # will match the dump.
4122: # description - regular expression that is used to filter
4123: # the dump. Only keywords matching this regexp
4124: # will be used.
1.272 raeburn 4125: # institutional code - optional supplied code to filter
4126: # the dump. Only courses with an institutional code
4127: # that match the supplied code will be returned.
1.336 raeburn 4128: # owner - optional supplied username and domain of owner to
4129: # filter the dump. Only courses for which the course
4130: # owner matches the supplied username and/or domain
4131: # will be returned. Pre-2.2.0 legacy entries from
4132: # nohist_courseiddump will only contain usernames.
1.384 raeburn 4133: # type - optional parameter for selection
1.418 raeburn 4134: # regexp_ok - if 1 or -1 allow the supplied institutional code
4135: # filter to behave as a regular expression:
4136: # 1 will not exclude the course if the instcode matches the RE
4137: # -1 will exclude the course if the instcode matches the RE
1.384 raeburn 4138: # rtn_as_hash - whether to return the information available for
4139: # each matched item as a frozen hash of all
4140: # key, value pairs in the item's hash, or as a
4141: # colon-separated list of (in order) description,
4142: # institutional code, and course owner.
1.404 raeburn 4143: # selfenrollonly - filter by courses allowing self-enrollment
4144: # now or in the future (selfenrollonly = 1).
4145: # catfilter - filter by course category, assigned to a course
4146: # using manually defined categories (i.e., not
1.407 raeburn 4147: # self-cataloging based on on institutional code).
1.404 raeburn 4148: # showhidden - include course in results even if course
1.407 raeburn 4149: # was set to be excluded from course catalog (DC only).
1.404 raeburn 4150: # caller - if set to 'coursecatalog', courses set to be hidden
4151: # from course catalog will be excluded from results (unless
4152: # overridden by "showhidden".
1.427 raeburn 4153: # cloner - escaped username:domain of course cloner (if picking course to
1.419 raeburn 4154: # clone).
4155: # cc_clone_list - escaped comma separated list of courses for which
4156: # course cloner has active CC role (and so can clone
4157: # automatically).
1.427 raeburn 4158: # cloneonly - filter by courses for which cloner has rights to clone.
4159: # createdbefore - include courses for which creation date preceeded this date.
4160: # createdafter - include courses for which creation date followed this date.
4161: # creationcontext - include courses created in specified context
1.404 raeburn 4162: #
1.445 raeburn 4163: # domcloner - flag to indicate if user can create CCs in course's domain.
1.489.2.11 raeburn 4164: # If so, ability to clone course is automatic.
4165: # hasuniquecode - filter by courses for which a six character unique code has
4166: # been set.
1.445 raeburn 4167: #
1.234 foxr 4168: # $client - The socket open on the client.
4169: # Returns:
4170: # 1 - Continue processing.
4171: # Side Effects:
4172: # a reply is written to $client.
4173: sub dump_course_id_handler {
4174: my ($cmd, $tail, $client) = @_;
4175: my $userinput = "$cmd:$tail";
4176:
1.333 raeburn 4177: my ($udom,$since,$description,$instcodefilter,$ownerfilter,$coursefilter,
1.404 raeburn 4178: $typefilter,$regexp_ok,$rtn_as_hash,$selfenrollonly,$catfilter,$showhidden,
1.427 raeburn 4179: $caller,$cloner,$cc_clone_list,$cloneonly,$createdbefore,$createdafter,
1.489.2.11 raeburn 4180: $creationcontext,$domcloner,$hasuniquecode) =split(/:/,$tail);
1.397 raeburn 4181: my $now = time;
1.419 raeburn 4182: my ($cloneruname,$clonerudom,%cc_clone);
1.234 foxr 4183: if (defined($description)) {
4184: $description=&unescape($description);
4185: } else {
4186: $description='.';
4187: }
1.266 raeburn 4188: if (defined($instcodefilter)) {
4189: $instcodefilter=&unescape($instcodefilter);
4190: } else {
4191: $instcodefilter='.';
4192: }
1.336 raeburn 4193: my ($ownerunamefilter,$ownerdomfilter);
1.266 raeburn 4194: if (defined($ownerfilter)) {
4195: $ownerfilter=&unescape($ownerfilter);
1.336 raeburn 4196: if ($ownerfilter ne '.' && defined($ownerfilter)) {
4197: if ($ownerfilter =~ /^([^:]*):([^:]*)$/) {
4198: $ownerunamefilter = $1;
4199: $ownerdomfilter = $2;
4200: } else {
4201: $ownerunamefilter = $ownerfilter;
4202: $ownerdomfilter = '';
4203: }
4204: }
1.266 raeburn 4205: } else {
4206: $ownerfilter='.';
4207: }
1.336 raeburn 4208:
1.282 raeburn 4209: if (defined($coursefilter)) {
4210: $coursefilter=&unescape($coursefilter);
4211: } else {
4212: $coursefilter='.';
4213: }
1.333 raeburn 4214: if (defined($typefilter)) {
4215: $typefilter=&unescape($typefilter);
4216: } else {
4217: $typefilter='.';
4218: }
1.344 raeburn 4219: if (defined($regexp_ok)) {
4220: $regexp_ok=&unescape($regexp_ok);
4221: }
1.401 raeburn 4222: if (defined($catfilter)) {
4223: $catfilter=&unescape($catfilter);
4224: }
1.419 raeburn 4225: if (defined($cloner)) {
4226: $cloner = &unescape($cloner);
4227: ($cloneruname,$clonerudom) = ($cloner =~ /^($LONCAPA::match_username):($LONCAPA::match_domain)$/);
4228: }
4229: if (defined($cc_clone_list)) {
4230: $cc_clone_list = &unescape($cc_clone_list);
4231: my @cc_cloners = split('&',$cc_clone_list);
4232: foreach my $cid (@cc_cloners) {
4233: my ($clonedom,$clonenum) = split(':',$cid);
4234: next if ($clonedom ne $udom);
4235: $cc_clone{$clonedom.'_'.$clonenum} = 1;
4236: }
4237: }
1.431 raeburn 4238: if ($createdbefore ne '') {
1.427 raeburn 4239: $createdbefore = &unescape($createdbefore);
4240: } else {
4241: $createdbefore = 0;
4242: }
1.431 raeburn 4243: if ($createdafter ne '') {
1.427 raeburn 4244: $createdafter = &unescape($createdafter);
4245: } else {
4246: $createdafter = 0;
4247: }
1.431 raeburn 4248: if ($creationcontext ne '') {
1.427 raeburn 4249: $creationcontext = &unescape($creationcontext);
4250: } else {
4251: $creationcontext = '.';
4252: }
1.489.2.11 raeburn 4253: unless ($hasuniquecode) {
4254: $hasuniquecode = '.';
4255: }
1.384 raeburn 4256: my $unpack = 1;
1.485 raeburn 4257: if ($description eq '.' && $instcodefilter eq '.' && $ownerfilter eq '.' &&
1.384 raeburn 4258: $typefilter eq '.') {
4259: $unpack = 0;
4260: }
4261: if (!defined($since)) { $since=0; }
1.234 foxr 4262: my $qresult='';
4263: my $hashref = &tie_domain_hash($udom, "nohist_courseids", &GDBM_WRCREAT());
4264: if ($hashref) {
1.384 raeburn 4265: while (my ($key,$value) = each(%$hashref)) {
1.397 raeburn 4266: my ($unesc_key,$lasttime_key,$lasttime,$is_hash,%val,
1.427 raeburn 4267: %unesc_val,$selfenroll_end,$selfenroll_types,$created,
4268: $context);
1.384 raeburn 4269: $unesc_key = &unescape($key);
4270: if ($unesc_key =~ /^lasttime:/) {
4271: next;
4272: } else {
4273: $lasttime_key = &escape('lasttime:'.$unesc_key);
4274: }
4275: if ($hashref->{$lasttime_key} ne '') {
4276: $lasttime = $hashref->{$lasttime_key};
4277: next if ($lasttime<$since);
4278: }
1.419 raeburn 4279: my ($canclone,$valchange);
1.384 raeburn 4280: my $items = &Apache::lonnet::thaw_unescape($value);
4281: if (ref($items) eq 'HASH') {
1.429 raeburn 4282: if ($hashref->{$lasttime_key} eq '') {
1.430 raeburn 4283: next if ($since > 1);
1.429 raeburn 4284: }
1.384 raeburn 4285: $is_hash = 1;
1.445 raeburn 4286: if ($domcloner) {
4287: $canclone = 1;
4288: } elsif (defined($clonerudom)) {
1.419 raeburn 4289: if ($items->{'cloners'}) {
4290: my @cloneable = split(',',$items->{'cloners'});
4291: if (@cloneable) {
4292: if (grep(/^\*$/,@cloneable)) {
4293: $canclone = 1;
4294: } elsif (grep(/^\*:\Q$clonerudom\E$/,@cloneable)) {
4295: $canclone = 1;
4296: } elsif (grep(/^\Q$cloneruname\E:\Q$clonerudom\E$/,@cloneable)) {
4297: $canclone = 1;
4298: }
4299: }
4300: unless ($canclone) {
4301: if ($cloneruname ne '' && $clonerudom ne '') {
4302: if ($cc_clone{$unesc_key}) {
4303: $canclone = 1;
4304: $items->{'cloners'} .= ','.$cloneruname.':'.
4305: $clonerudom;
4306: $valchange = 1;
4307: }
4308: }
4309: }
4310: } elsif (defined($cloneruname)) {
4311: if ($cc_clone{$unesc_key}) {
4312: $canclone = 1;
4313: $items->{'cloners'} = $cloneruname.':'.$clonerudom;
4314: $valchange = 1;
4315: }
1.437 raeburn 4316: unless ($canclone) {
4317: if ($items->{'owner'} =~ /:/) {
4318: if ($items->{'owner'} eq $cloner) {
4319: $canclone = 1;
4320: }
1.444 raeburn 4321: } elsif ($cloner eq $items->{'owner'}.':'.$udom) {
1.437 raeburn 4322: $canclone = 1;
4323: }
4324: if ($canclone) {
4325: $items->{'cloners'} = $cloneruname.':'.$clonerudom;
4326: $valchange = 1;
4327: }
4328: }
1.419 raeburn 4329: }
4330: }
1.384 raeburn 4331: if ($unpack || !$rtn_as_hash) {
4332: $unesc_val{'descr'} = $items->{'description'};
4333: $unesc_val{'inst_code'} = $items->{'inst_code'};
4334: $unesc_val{'owner'} = $items->{'owner'};
4335: $unesc_val{'type'} = $items->{'type'};
1.419 raeburn 4336: $unesc_val{'cloners'} = $items->{'cloners'};
1.427 raeburn 4337: $unesc_val{'created'} = $items->{'created'};
4338: $unesc_val{'context'} = $items->{'context'};
1.404 raeburn 4339: }
4340: $selfenroll_types = $items->{'selfenroll_types'};
4341: $selfenroll_end = $items->{'selfenroll_end_date'};
1.427 raeburn 4342: $created = $items->{'created'};
4343: $context = $items->{'context'};
1.489.2.11 raeburn 4344: if ($hasuniquecode ne '.') {
4345: next unless ($items->{'uniquecode'});
4346: }
1.404 raeburn 4347: if ($selfenrollonly) {
4348: next if (!$selfenroll_types);
4349: if (($selfenroll_end > 0) && ($selfenroll_end <= $now)) {
4350: next;
1.397 raeburn 4351: }
1.404 raeburn 4352: }
1.427 raeburn 4353: if ($creationcontext ne '.') {
4354: next if (($context ne '') && ($context ne $creationcontext));
4355: }
4356: if ($createdbefore > 0) {
4357: next if (($created eq '') || ($created > $createdbefore));
4358: }
4359: if ($createdafter > 0) {
4360: next if (($created eq '') || ($created <= $createdafter));
4361: }
1.404 raeburn 4362: if ($catfilter ne '') {
1.406 raeburn 4363: next if ($items->{'categories'} eq '');
4364: my @categories = split('&',$items->{'categories'});
1.407 raeburn 4365: next if (@categories == 0);
4366: my @subcats = split('&',$catfilter);
4367: my $matchcat = 0;
4368: foreach my $cat (@categories) {
4369: if (grep(/^\Q$cat\E$/,@subcats)) {
4370: $matchcat = 1;
4371: last;
4372: }
4373: }
4374: next if (!$matchcat);
1.404 raeburn 4375: }
4376: if ($caller eq 'coursecatalog') {
1.405 raeburn 4377: if ($items->{'hidefromcat'} eq 'yes') {
4378: next if !$showhidden;
1.401 raeburn 4379: }
1.384 raeburn 4380: }
1.383 raeburn 4381: } else {
1.401 raeburn 4382: next if ($catfilter ne '');
1.419 raeburn 4383: next if ($selfenrollonly);
1.427 raeburn 4384: next if ($createdbefore || $createdafter);
4385: next if ($creationcontext ne '.');
1.419 raeburn 4386: if ((defined($clonerudom)) && (defined($cloneruname))) {
4387: if ($cc_clone{$unesc_key}) {
4388: $canclone = 1;
4389: $val{'cloners'} = &escape($cloneruname.':'.$clonerudom);
4390: }
4391: }
1.384 raeburn 4392: $is_hash = 0;
1.388 raeburn 4393: my @courseitems = split(/:/,$value);
1.403 raeburn 4394: $lasttime = pop(@courseitems);
1.402 raeburn 4395: if ($hashref->{$lasttime_key} eq '') {
4396: next if ($lasttime<$since);
4397: }
1.384 raeburn 4398: ($val{'descr'},$val{'inst_code'},$val{'owner'},$val{'type'}) = @courseitems;
1.383 raeburn 4399: }
1.419 raeburn 4400: if ($cloneonly) {
4401: next unless ($canclone);
4402: }
1.266 raeburn 4403: my $match = 1;
1.384 raeburn 4404: if ($description ne '.') {
4405: if (!$is_hash) {
4406: $unesc_val{'descr'} = &unescape($val{'descr'});
4407: }
4408: if (eval{$unesc_val{'descr'} !~ /\Q$description\E/i}) {
1.266 raeburn 4409: $match = 0;
1.384 raeburn 4410: }
1.266 raeburn 4411: }
1.384 raeburn 4412: if ($instcodefilter ne '.') {
4413: if (!$is_hash) {
4414: $unesc_val{'inst_code'} = &unescape($val{'inst_code'});
4415: }
1.418 raeburn 4416: if ($regexp_ok == 1) {
1.384 raeburn 4417: if (eval{$unesc_val{'inst_code'} !~ /$instcodefilter/}) {
1.344 raeburn 4418: $match = 0;
4419: }
1.418 raeburn 4420: } elsif ($regexp_ok == -1) {
4421: if (eval{$unesc_val{'inst_code'} =~ /$instcodefilter/}) {
4422: $match = 0;
4423: }
1.344 raeburn 4424: } else {
1.384 raeburn 4425: if (eval{$unesc_val{'inst_code'} !~ /\Q$instcodefilter\E/i}) {
1.344 raeburn 4426: $match = 0;
4427: }
1.266 raeburn 4428: }
1.234 foxr 4429: }
1.384 raeburn 4430: if ($ownerfilter ne '.') {
4431: if (!$is_hash) {
4432: $unesc_val{'owner'} = &unescape($val{'owner'});
4433: }
1.336 raeburn 4434: if (($ownerunamefilter ne '') && ($ownerdomfilter ne '')) {
1.384 raeburn 4435: if ($unesc_val{'owner'} =~ /:/) {
4436: if (eval{$unesc_val{'owner'} !~
4437: /\Q$ownerunamefilter\E:\Q$ownerdomfilter\E$/i}) {
1.336 raeburn 4438: $match = 0;
4439: }
4440: } else {
1.384 raeburn 4441: if (eval{$unesc_val{'owner'} !~ /\Q$ownerunamefilter\E/i}) {
1.336 raeburn 4442: $match = 0;
4443: }
4444: }
4445: } elsif ($ownerunamefilter ne '') {
1.384 raeburn 4446: if ($unesc_val{'owner'} =~ /:/) {
4447: if (eval{$unesc_val{'owner'} !~ /\Q$ownerunamefilter\E:[^:]+$/i}) {
1.336 raeburn 4448: $match = 0;
4449: }
4450: } else {
1.384 raeburn 4451: if (eval{$unesc_val{'owner'} !~ /\Q$ownerunamefilter\E/i}) {
1.336 raeburn 4452: $match = 0;
4453: }
4454: }
4455: } elsif ($ownerdomfilter ne '') {
1.384 raeburn 4456: if ($unesc_val{'owner'} =~ /:/) {
4457: if (eval{$unesc_val{'owner'} !~ /^[^:]+:\Q$ownerdomfilter\E/}) {
1.336 raeburn 4458: $match = 0;
4459: }
4460: } else {
4461: if ($ownerdomfilter ne $udom) {
4462: $match = 0;
4463: }
4464: }
1.266 raeburn 4465: }
4466: }
1.384 raeburn 4467: if ($coursefilter ne '.') {
4468: if (eval{$unesc_key !~ /^$udom(_)\Q$coursefilter\E$/}) {
1.282 raeburn 4469: $match = 0;
4470: }
4471: }
1.384 raeburn 4472: if ($typefilter ne '.') {
4473: if (!$is_hash) {
4474: $unesc_val{'type'} = &unescape($val{'type'});
4475: }
4476: if ($unesc_val{'type'} eq '') {
1.333 raeburn 4477: if ($typefilter ne 'Course') {
4478: $match = 0;
4479: }
1.383 raeburn 4480: } else {
1.384 raeburn 4481: if (eval{$unesc_val{'type'} !~ /^\Q$typefilter\E$/}) {
1.333 raeburn 4482: $match = 0;
4483: }
4484: }
4485: }
1.266 raeburn 4486: if ($match == 1) {
1.384 raeburn 4487: if ($rtn_as_hash) {
4488: if ($is_hash) {
1.419 raeburn 4489: if ($valchange) {
4490: my $newvalue = &Apache::lonnet::freeze_escape($items);
4491: $qresult.=$key.'='.$newvalue.'&';
4492: } else {
4493: $qresult.=$key.'='.$value.'&';
4494: }
1.384 raeburn 4495: } else {
1.388 raeburn 4496: my %rtnhash = ( 'description' => &unescape($val{'descr'}),
4497: 'inst_code' => &unescape($val{'inst_code'}),
4498: 'owner' => &unescape($val{'owner'}),
4499: 'type' => &unescape($val{'type'}),
1.419 raeburn 4500: 'cloners' => &unescape($val{'cloners'}),
1.384 raeburn 4501: );
4502: my $items = &Apache::lonnet::freeze_escape(\%rtnhash);
4503: $qresult.=$key.'='.$items.'&';
4504: }
1.383 raeburn 4505: } else {
1.384 raeburn 4506: if ($is_hash) {
4507: $qresult .= $key.'='.&escape($unesc_val{'descr'}).':'.
4508: &escape($unesc_val{'inst_code'}).':'.
4509: &escape($unesc_val{'owner'}).'&';
4510: } else {
4511: $qresult .= $key.'='.$val{'descr'}.':'.$val{'inst_code'}.
4512: ':'.$val{'owner'}.'&';
4513: }
1.383 raeburn 4514: }
1.266 raeburn 4515: }
1.234 foxr 4516: }
1.311 albertel 4517: if (&untie_domain_hash($hashref)) {
1.234 foxr 4518: chop($qresult);
1.387 albertel 4519: &Reply($client, \$qresult, $userinput);
1.234 foxr 4520: } else {
4521: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4522: "while attempting courseiddump\n", $userinput);
4523: }
4524: } else {
4525: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
4526: "while attempting courseiddump\n", $userinput);
4527: }
4528: return 1;
4529: }
4530: ®ister_handler("courseiddump", \&dump_course_id_handler, 0, 1, 0);
1.238 foxr 4531:
1.438 raeburn 4532: sub course_lastaccess_handler {
4533: my ($cmd, $tail, $client) = @_;
4534: my $userinput = "$cmd:$tail";
4535: my ($cdom,$cnum) = split(':',$tail);
4536: my (%lastaccess,$qresult);
4537: my $hashref = &tie_domain_hash($cdom, "nohist_courseids", &GDBM_WRCREAT());
4538: if ($hashref) {
4539: while (my ($key,$value) = each(%$hashref)) {
4540: my ($unesc_key,$lasttime);
4541: $unesc_key = &unescape($key);
4542: if ($cnum) {
4543: next unless ($unesc_key =~ /\Q$cdom\E_\Q$cnum\E$/);
4544: }
4545: if ($unesc_key =~ /^lasttime:($LONCAPA::match_domain\_$LONCAPA::match_courseid)/) {
4546: $lastaccess{$1} = $value;
4547: } else {
4548: my $items = &Apache::lonnet::thaw_unescape($value);
4549: if (ref($items) eq 'HASH') {
4550: unless ($lastaccess{$unesc_key}) {
4551: $lastaccess{$unesc_key} = '';
4552: }
4553: } else {
4554: my @courseitems = split(':',$value);
4555: $lastaccess{$unesc_key} = pop(@courseitems);
4556: }
4557: }
4558: }
4559: foreach my $cid (sort(keys(%lastaccess))) {
4560: $qresult.=&escape($cid).'='.$lastaccess{$cid}.'&';
4561: }
4562: if (&untie_domain_hash($hashref)) {
4563: if ($qresult) {
4564: chop($qresult);
4565: }
4566: &Reply($client, \$qresult, $userinput);
4567: } else {
4568: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4569: "while attempting lastacourseaccess\n", $userinput);
4570: }
4571: } else {
4572: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
4573: "while attempting lastcourseaccess\n", $userinput);
4574: }
4575: return 1;
4576: }
4577: ®ister_handler("courselastaccess",\&course_lastaccess_handler, 0, 1, 0);
4578:
1.489.2.35.2. (raeburn 4579:): sub course_sessions_handler {
4580:): my ($cmd, $tail, $client) = @_;
4581:): my $userinput = "$cmd:$tail";
4582:): my ($cdom,$cnum,$lastactivity) = split(':',$tail);
4583:): my $dbsuffix = '_'.$cdom.'_'.$cnum.'.db';
4584:): my (%sessions,$qresult);
4585:): my $now=time;
4586:): if (opendir(DIR,$perlvar{'lonIDsDir'})) {
4587:): my $filename;
4588:): while ($filename=readdir(DIR)) {
4589:): next if ($filename=~/^\./);
4590:): next if ($filename=~/^publicuser_/);
4591:): next if ($filename=~/^[a-f0-9]+_(linked|lti_\d+)\.id$/);
4592:): if ($filename =~ /^($LONCAPA::match_username)_\d+_($LONCAPA::match_domain)_/) {
4593:): my ($uname,$udom) = ($1,$2);
4594:): next unless (-e "$perlvar{'lonDaemons'}/tmp/$uname$dbsuffix");
4595:): my $mtime = (stat("$perlvar{'lonIDsDir'}/$filename"))[9];
4596:): if ($lastactivity < 0) {
4597:): next if ($mtime-$now > $lastactivity);
4598:): } else {
4599:): next if ($now-$mtime > $lastactivity);
4600:): }
4601:): $sessions{$uname.':'.$udom} = $mtime;
4602:): }
4603:): }
4604:): closedir(DIR);
4605:): }
4606:): foreach my $user (keys(%sessions)) {
4607:): $qresult.=&escape($user).'='.$sessions{$user}.'&';
4608:): }
4609:): if ($qresult) {
4610:): chop($qresult);
4611:): }
4612:): &Reply($client, \$qresult, $userinput);
4613:): return 1;
4614:): }
4615:): ®ister_handler("coursesessions",\&course_sessions_handler, 0, 1, 0);
4616:):
1.238 foxr 4617: #
1.348 raeburn 4618: # Puts an unencrypted entry in a namespace db file at the domain level
4619: #
4620: # Parameters:
4621: # $cmd - The command that got us here.
4622: # $tail - Tail of the command (remaining parameters).
4623: # $client - File descriptor connected to client.
4624: # Returns
4625: # 0 - Requested to exit, caller should shut down.
4626: # 1 - Continue processing.
4627: # Side effects:
4628: # reply is written to $client.
4629: #
4630: sub put_domain_handler {
4631: my ($cmd,$tail,$client) = @_;
4632:
4633: my $userinput = "$cmd:$tail";
4634:
4635: my ($udom,$namespace,$what) =split(/:/,$tail,3);
4636: chomp($what);
4637: my @pairs=split(/\&/,$what);
4638: my $hashref = &tie_domain_hash($udom, "$namespace", &GDBM_WRCREAT(),
4639: "P", $what);
4640: if ($hashref) {
4641: foreach my $pair (@pairs) {
4642: my ($key,$value)=split(/=/,$pair);
4643: $hashref->{$key}=$value;
4644: }
4645: if (&untie_domain_hash($hashref)) {
4646: &Reply($client, "ok\n", $userinput);
4647: } else {
4648: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4649: "while attempting putdom\n", $userinput);
4650: }
4651: } else {
4652: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
4653: "while attempting putdom\n", $userinput);
4654: }
4655:
4656: return 1;
4657: }
4658: ®ister_handler("putdom", \&put_domain_handler, 0, 1, 0);
4659:
4660: # Unencrypted get from the namespace database file at the domain level.
4661: # This function retrieves a keyed item from a specific named database in the
4662: # domain directory.
4663: #
4664: # Parameters:
4665: # $cmd - Command request keyword (get).
4666: # $tail - Tail of the command. This is a colon separated list
4667: # consisting of the domain and the 'namespace'
4668: # which selects the gdbm file to do the lookup in,
4669: # & separated list of keys to lookup. Note that
4670: # the values are returned as an & separated list too.
4671: # $client - File descriptor open on the client.
4672: # Returns:
4673: # 1 - Continue processing.
4674: # 0 - Exit.
4675: # Side effects:
4676: # reply is written to $client.
4677: #
4678:
4679: sub get_domain_handler {
4680: my ($cmd, $tail, $client) = @_;
4681:
1.461 foxr 4682:
1.489.2.34 raeburn 4683: my $userinput = "$cmd:$tail";
1.348 raeburn 4684:
4685: my ($udom,$namespace,$what)=split(/:/,$tail,3);
4686: chomp($what);
1.489.2.35.2. (raeburn 4687:): if ($namespace =~ /^enc/) {
4688:): &Failure( $client, "refused\n", $userinput);
4689:): } else {
4690:): my @queries=split(/\&/,$what);
4691:): my $qresult='';
4692:): my $hashref = &tie_domain_hash($udom, "$namespace", &GDBM_READER());
4693:): if ($hashref) {
4694:): for (my $i=0;$i<=$#queries;$i++) {
4695:): $qresult.="$hashref->{$queries[$i]}&";
4696:): }
4697:): if (&untie_domain_hash($hashref)) {
4698:): $qresult=~s/\&$//;
4699:): &Reply($client, \$qresult, $userinput);
4700:): } else {
4701:): &Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ".
4702:): "while attempting getdom\n",$userinput);
4703:): }
4704:): } else {
4705:): &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
4706:): "while attempting getdom\n",$userinput);
4707:): }
4708:): }
4709:):
4710:): return 1;
4711:): }
4712:): ®ister_handler("getdom", \&get_domain_handler, 0, 1, 0);
4713:):
4714:): sub encrypted_get_domain_handler {
4715:): my ($cmd, $tail, $client) = @_;
4716:):
4717:): my $userinput = "$cmd:$tail";
4718:):
4719:): my ($udom,$namespace,$what)=split(/:/,$tail,3);
4720:): chomp($what);
1.348 raeburn 4721: my @queries=split(/\&/,$what);
4722: my $qresult='';
4723: my $hashref = &tie_domain_hash($udom, "$namespace", &GDBM_READER());
4724: if ($hashref) {
4725: for (my $i=0;$i<=$#queries;$i++) {
4726: $qresult.="$hashref->{$queries[$i]}&";
4727: }
4728: if (&untie_domain_hash($hashref)) {
4729: $qresult=~s/\&$//;
1.489.2.35.2. (raeburn 4730:): if ($cipher) {
4731:): my $cmdlength=length($qresult);
4732:): $qresult.=" ";
4733:): my $encqresult='';
4734:): for (my $encidx=0;$encidx<=$cmdlength;$encidx+=8) {
4735:): $encqresult.= unpack("H16",
4736:): $cipher->encrypt(substr($qresult,
4737:): $encidx,
4738:): 8)));
4739:): }
4740:): &Reply( $client, "enc:$cmdlength:$encqresult\n", $userinput);
4741:): } else {
4742:): &Failure( $client, "error:no_key\n", $userinput);
4743:): }
1.348 raeburn 4744: } else {
4745: &Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ".
1.489.2.35.2. (raeburn 4746:): "while attempting egetdom\n",$userinput);
1.348 raeburn 4747: }
4748: } else {
4749: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
1.489.2.35.2. (raeburn 4750:): "while attempting egetdom\n",$userinput);
1.348 raeburn 4751: }
4752: return 1;
4753: }
1.489.2.35.2. (raeburn 4754:): ®ister_handler("egetdom", \&encrypted_get_domain_handler, 1, 1, 0);
1.348 raeburn 4755:
1.420 raeburn 4756: #
1.238 foxr 4757: # Puts an id to a domains id database.
4758: #
4759: # Parameters:
4760: # $cmd - The command that triggered us.
4761: # $tail - Remainder of the request other than the command. This is a
4762: # colon separated list containing:
4763: # $domain - The domain for which we are writing the id.
4764: # $pairs - The id info to write... this is and & separated list
4765: # of keyword=value.
4766: # $client - Socket open on the client.
4767: # Returns:
4768: # 1 - Continue processing.
4769: # Side effects:
4770: # reply is written to $client.
4771: #
4772: sub put_id_handler {
4773: my ($cmd,$tail,$client) = @_;
4774:
4775:
4776: my $userinput = "$cmd:$tail";
4777:
4778: my ($udom,$what)=split(/:/,$tail);
4779: chomp($what);
4780: my @pairs=split(/\&/,$what);
4781: my $hashref = &tie_domain_hash($udom, "ids", &GDBM_WRCREAT(),
4782: "P", $what);
4783: if ($hashref) {
4784: foreach my $pair (@pairs) {
4785: my ($key,$value)=split(/=/,$pair);
4786: $hashref->{$key}=$value;
4787: }
1.311 albertel 4788: if (&untie_domain_hash($hashref)) {
1.238 foxr 4789: &Reply($client, "ok\n", $userinput);
4790: } else {
4791: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4792: "while attempting idput\n", $userinput);
4793: }
4794: } else {
4795: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
4796: "while attempting idput\n", $userinput);
4797: }
4798:
4799: return 1;
4800: }
1.263 albertel 4801: ®ister_handler("idput", \&put_id_handler, 0, 1, 0);
1.238 foxr 4802:
4803: #
4804: # Retrieves a set of id values from the id database.
4805: # Returns an & separated list of results, one for each requested id to the
4806: # client.
4807: #
4808: # Parameters:
4809: # $cmd - Command keyword that caused us to be dispatched.
4810: # $tail - Tail of the command. Consists of a colon separated:
4811: # domain - the domain whose id table we dump
4812: # ids Consists of an & separated list of
4813: # id keywords whose values will be fetched.
4814: # nonexisting keywords will have an empty value.
4815: # $client - Socket open on the client.
4816: #
4817: # Returns:
4818: # 1 - indicating processing should continue.
4819: # Side effects:
4820: # An & separated list of results is written to $client.
4821: #
4822: sub get_id_handler {
4823: my ($cmd, $tail, $client) = @_;
4824:
4825:
4826: my $userinput = "$client:$tail";
4827:
4828: my ($udom,$what)=split(/:/,$tail);
4829: chomp($what);
4830: my @queries=split(/\&/,$what);
4831: my $qresult='';
4832: my $hashref = &tie_domain_hash($udom, "ids", &GDBM_READER());
4833: if ($hashref) {
4834: for (my $i=0;$i<=$#queries;$i++) {
4835: $qresult.="$hashref->{$queries[$i]}&";
4836: }
1.311 albertel 4837: if (&untie_domain_hash($hashref)) {
1.238 foxr 4838: $qresult=~s/\&$//;
1.387 albertel 4839: &Reply($client, \$qresult, $userinput);
1.238 foxr 4840: } else {
4841: &Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ".
4842: "while attempting idget\n",$userinput);
4843: }
4844: } else {
4845: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
4846: "while attempting idget\n",$userinput);
4847: }
4848:
4849: return 1;
4850: }
1.263 albertel 4851: ®ister_handler("idget", \&get_id_handler, 0, 1, 0);
1.238 foxr 4852:
1.489.2.7 raeburn 4853: # Deletes one or more ids in a domain's id database.
1.489.2.6 raeburn 4854: #
4855: # Parameters:
4856: # $cmd - Command keyword (iddel).
4857: # $tail - Command tail. In this case a colon
4858: # separated list containing:
4859: # The domain for which we are deleting the id(s).
4860: # &-separated list of id(s) to delete.
4861: # $client - File open on client socket.
4862: # Returns:
4863: # 1 - Continue processing
4864: # 0 - Exit server.
4865: #
4866: #
4867:
4868: sub del_id_handler {
4869: my ($cmd,$tail,$client) = @_;
4870:
4871: my $userinput = "$cmd:$tail";
4872:
4873: my ($udom,$what)=split(/:/,$tail);
4874: chomp($what);
4875: my $hashref = &tie_domain_hash($udom, "ids", &GDBM_WRCREAT(),
4876: "D", $what);
4877: if ($hashref) {
4878: my @keys=split(/\&/,$what);
4879: foreach my $key (@keys) {
4880: delete($hashref->{$key});
4881: }
4882: if (&untie_user_hash($hashref)) {
4883: &Reply($client, "ok\n", $userinput);
4884: } else {
4885: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4886: "while attempting iddel\n", $userinput);
4887: }
4888: } else {
4889: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
4890: "while attempting iddel\n", $userinput);
4891: }
4892: return 1;
4893: }
4894: ®ister_handler("iddel", \&del_id_handler, 0, 1, 0);
4895:
1.238 foxr 4896: #
1.299 raeburn 4897: # Puts broadcast e-mail sent by Domain Coordinator in nohist_dcmail database
4898: #
4899: # Parameters
4900: # $cmd - Command keyword that caused us to be dispatched.
4901: # $tail - Tail of the command. Consists of a colon separated:
4902: # domain - the domain whose dcmail we are recording
4903: # email Consists of key=value pair
4904: # where key is unique msgid
4905: # and value is message (in XML)
4906: # $client - Socket open on the client.
4907: #
4908: # Returns:
4909: # 1 - indicating processing should continue.
4910: # Side effects
4911: # reply is written to $client.
4912: #
4913: sub put_dcmail_handler {
4914: my ($cmd,$tail,$client) = @_;
4915: my $userinput = "$cmd:$tail";
1.463 foxr 4916:
4917:
1.299 raeburn 4918: my ($udom,$what)=split(/:/,$tail);
4919: chomp($what);
4920: my $hashref = &tie_domain_hash($udom, "nohist_dcmail", &GDBM_WRCREAT());
4921: if ($hashref) {
4922: my ($key,$value)=split(/=/,$what);
4923: $hashref->{$key}=$value;
4924: }
1.311 albertel 4925: if (&untie_domain_hash($hashref)) {
1.299 raeburn 4926: &Reply($client, "ok\n", $userinput);
4927: } else {
4928: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
4929: "while attempting dcmailput\n", $userinput);
4930: }
4931: return 1;
4932: }
4933: ®ister_handler("dcmailput", \&put_dcmail_handler, 0, 1, 0);
4934:
4935: #
4936: # Retrieves broadcast e-mail from nohist_dcmail database
4937: # Returns to client an & separated list of key=value pairs,
4938: # where key is msgid and value is message information.
4939: #
4940: # Parameters
4941: # $cmd - Command keyword that caused us to be dispatched.
4942: # $tail - Tail of the command. Consists of a colon separated:
4943: # domain - the domain whose dcmail table we dump
4944: # startfilter - beginning of time window
4945: # endfilter - end of time window
4946: # sendersfilter - & separated list of username:domain
4947: # for senders to search for.
4948: # $client - Socket open on the client.
4949: #
4950: # Returns:
4951: # 1 - indicating processing should continue.
4952: # Side effects
4953: # reply (& separated list of msgid=messageinfo pairs) is
4954: # written to $client.
4955: #
4956: sub dump_dcmail_handler {
4957: my ($cmd, $tail, $client) = @_;
4958:
4959: my $userinput = "$cmd:$tail";
4960: my ($udom,$startfilter,$endfilter,$sendersfilter) = split(/:/,$tail);
4961: chomp($sendersfilter);
4962: my @senders = ();
4963: if (defined($startfilter)) {
4964: $startfilter=&unescape($startfilter);
4965: } else {
4966: $startfilter='.';
4967: }
4968: if (defined($endfilter)) {
4969: $endfilter=&unescape($endfilter);
4970: } else {
4971: $endfilter='.';
4972: }
4973: if (defined($sendersfilter)) {
4974: $sendersfilter=&unescape($sendersfilter);
1.300 albertel 4975: @senders = map { &unescape($_) } split(/\&/,$sendersfilter);
1.299 raeburn 4976: }
4977:
4978: my $qresult='';
4979: my $hashref = &tie_domain_hash($udom, "nohist_dcmail", &GDBM_WRCREAT());
4980: if ($hashref) {
4981: while (my ($key,$value) = each(%$hashref)) {
4982: my $match = 1;
1.303 albertel 4983: my ($timestamp,$subj,$uname,$udom) =
4984: split(/:/,&unescape(&unescape($key)),5); # yes, twice really
1.299 raeburn 4985: $subj = &unescape($subj);
4986: unless ($startfilter eq '.' || !defined($startfilter)) {
4987: if ($timestamp < $startfilter) {
4988: $match = 0;
4989: }
4990: }
4991: unless ($endfilter eq '.' || !defined($endfilter)) {
4992: if ($timestamp > $endfilter) {
4993: $match = 0;
4994: }
4995: }
4996: unless (@senders < 1) {
4997: unless (grep/^$uname:$udom$/,@senders) {
4998: $match = 0;
4999: }
5000: }
5001: if ($match == 1) {
5002: $qresult.=$key.'='.$value.'&';
5003: }
5004: }
1.311 albertel 5005: if (&untie_domain_hash($hashref)) {
1.299 raeburn 5006: chop($qresult);
1.387 albertel 5007: &Reply($client, \$qresult, $userinput);
1.299 raeburn 5008: } else {
5009: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
5010: "while attempting dcmaildump\n", $userinput);
5011: }
5012: } else {
5013: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
5014: "while attempting dcmaildump\n", $userinput);
5015: }
5016: return 1;
5017: }
5018:
5019: ®ister_handler("dcmaildump", \&dump_dcmail_handler, 0, 1, 0);
5020:
5021: #
5022: # Puts domain roles in nohist_domainroles database
5023: #
5024: # Parameters
5025: # $cmd - Command keyword that caused us to be dispatched.
5026: # $tail - Tail of the command. Consists of a colon separated:
5027: # domain - the domain whose roles we are recording
5028: # role - Consists of key=value pair
5029: # where key is unique role
5030: # and value is start/end date information
5031: # $client - Socket open on the client.
5032: #
5033: # Returns:
5034: # 1 - indicating processing should continue.
5035: # Side effects
5036: # reply is written to $client.
5037: #
5038:
5039: sub put_domainroles_handler {
5040: my ($cmd,$tail,$client) = @_;
5041:
5042: my $userinput = "$cmd:$tail";
5043: my ($udom,$what)=split(/:/,$tail);
5044: chomp($what);
5045: my @pairs=split(/\&/,$what);
5046: my $hashref = &tie_domain_hash($udom, "nohist_domainroles", &GDBM_WRCREAT());
5047: if ($hashref) {
5048: foreach my $pair (@pairs) {
5049: my ($key,$value)=split(/=/,$pair);
5050: $hashref->{$key}=$value;
5051: }
1.311 albertel 5052: if (&untie_domain_hash($hashref)) {
1.299 raeburn 5053: &Reply($client, "ok\n", $userinput);
5054: } else {
5055: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
5056: "while attempting domroleput\n", $userinput);
5057: }
5058: } else {
5059: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
5060: "while attempting domroleput\n", $userinput);
5061: }
5062:
5063: return 1;
5064: }
5065:
5066: ®ister_handler("domroleput", \&put_domainroles_handler, 0, 1, 0);
5067:
5068: #
5069: # Retrieves domain roles from nohist_domainroles database
5070: # Returns to client an & separated list of key=value pairs,
5071: # where key is role and value is start and end date information.
5072: #
5073: # Parameters
5074: # $cmd - Command keyword that caused us to be dispatched.
5075: # $tail - Tail of the command. Consists of a colon separated:
5076: # domain - the domain whose domain roles table we dump
5077: # $client - Socket open on the client.
5078: #
5079: # Returns:
5080: # 1 - indicating processing should continue.
5081: # Side effects
5082: # reply (& separated list of role=start/end info pairs) is
5083: # written to $client.
5084: #
5085: sub dump_domainroles_handler {
5086: my ($cmd, $tail, $client) = @_;
5087:
5088: my $userinput = "$cmd:$tail";
5089: my ($udom,$startfilter,$endfilter,$rolesfilter) = split(/:/,$tail);
5090: chomp($rolesfilter);
5091: my @roles = ();
5092: if (defined($startfilter)) {
5093: $startfilter=&unescape($startfilter);
5094: } else {
5095: $startfilter='.';
5096: }
5097: if (defined($endfilter)) {
5098: $endfilter=&unescape($endfilter);
5099: } else {
5100: $endfilter='.';
5101: }
5102: if (defined($rolesfilter)) {
5103: $rolesfilter=&unescape($rolesfilter);
1.300 albertel 5104: @roles = split(/\&/,$rolesfilter);
1.299 raeburn 5105: }
1.421 raeburn 5106:
1.299 raeburn 5107: my $hashref = &tie_domain_hash($udom, "nohist_domainroles", &GDBM_WRCREAT());
5108: if ($hashref) {
5109: my $qresult = '';
5110: while (my ($key,$value) = each(%$hashref)) {
5111: my $match = 1;
1.421 raeburn 5112: my ($end,$start) = split(/:/,&unescape($value));
1.299 raeburn 5113: my ($trole,$uname,$udom,$runame,$rudom,$rsec) = split(/:/,&unescape($key));
1.421 raeburn 5114: unless (@roles < 1) {
5115: unless (grep/^\Q$trole\E$/,@roles) {
5116: $match = 0;
5117: next;
5118: }
5119: }
1.299 raeburn 5120: unless ($startfilter eq '.' || !defined($startfilter)) {
1.415 raeburn 5121: if ((defined($start)) && ($start >= $startfilter)) {
1.299 raeburn 5122: $match = 0;
1.421 raeburn 5123: next;
1.299 raeburn 5124: }
5125: }
5126: unless ($endfilter eq '.' || !defined($endfilter)) {
1.421 raeburn 5127: if ((defined($end)) && (($end > 0) && ($end <= $endfilter))) {
1.299 raeburn 5128: $match = 0;
1.421 raeburn 5129: next;
1.299 raeburn 5130: }
5131: }
5132: if ($match == 1) {
5133: $qresult.=$key.'='.$value.'&';
5134: }
5135: }
1.311 albertel 5136: if (&untie_domain_hash($hashref)) {
1.299 raeburn 5137: chop($qresult);
1.387 albertel 5138: &Reply($client, \$qresult, $userinput);
1.299 raeburn 5139: } else {
5140: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
5141: "while attempting domrolesdump\n", $userinput);
5142: }
5143: } else {
5144: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
5145: "while attempting domrolesdump\n", $userinput);
5146: }
5147: return 1;
5148: }
5149:
5150: ®ister_handler("domrolesdump", \&dump_domainroles_handler, 0, 1, 0);
5151:
5152:
1.238 foxr 5153: # Process the tmpput command I'm not sure what this does.. Seems to
5154: # create a file in the lonDaemons/tmp directory of the form $id.tmp
5155: # where Id is the client's ip concatenated with a sequence number.
5156: # The file will contain some value that is passed in. Is this e.g.
5157: # a login token?
5158: #
5159: # Parameters:
5160: # $cmd - The command that got us dispatched.
5161: # $tail - The remainder of the request following $cmd:
5162: # In this case this will be the contents of the file.
5163: # $client - Socket connected to the client.
5164: # Returns:
5165: # 1 indicating processing can continue.
5166: # Side effects:
5167: # A file is created in the local filesystem.
5168: # A reply is sent to the client.
5169: sub tmp_put_handler {
5170: my ($cmd, $what, $client) = @_;
5171:
5172: my $userinput = "$cmd:$what"; # Reconstruct for logging.
5173:
1.347 raeburn 5174: my ($record,$context) = split(/:/,$what);
5175: if ($context ne '') {
5176: chomp($context);
5177: $context = &unescape($context);
5178: }
5179: my ($id,$store);
1.238 foxr 5180: $tmpsnum++;
1.454 raeburn 5181: if (($context eq 'resetpw') || ($context eq 'createaccount')) {
1.347 raeburn 5182: $id = &md5_hex(&md5_hex(time.{}.rand().$$));
5183: } else {
5184: $id = $$.'_'.$clientip.'_'.$tmpsnum;
5185: }
1.238 foxr 5186: $id=~s/\W/\_/g;
1.347 raeburn 5187: $record=~s/\n//g;
1.238 foxr 5188: my $execdir=$perlvar{'lonDaemons'};
5189: if ($store=IO::File->new(">$execdir/tmp/$id.tmp")) {
1.347 raeburn 5190: print $store $record;
1.238 foxr 5191: close $store;
1.387 albertel 5192: &Reply($client, \$id, $userinput);
1.238 foxr 5193: } else {
5194: &Failure( $client, "error: ".($!+0)."IO::File->new Failed ".
5195: "while attempting tmpput\n", $userinput);
5196: }
5197: return 1;
5198:
5199: }
5200: ®ister_handler("tmpput", \&tmp_put_handler, 0, 1, 0);
1.263 albertel 5201:
1.238 foxr 5202: # Processes the tmpget command. This command returns the contents
5203: # of a temporary resource file(?) created via tmpput.
5204: #
5205: # Paramters:
5206: # $cmd - Command that got us dispatched.
5207: # $id - Tail of the command, contain the id of the resource
5208: # we want to fetch.
5209: # $client - socket open on the client.
5210: # Return:
5211: # 1 - Inidcating processing can continue.
5212: # Side effects:
5213: # A reply is sent to the client.
5214: #
5215: sub tmp_get_handler {
5216: my ($cmd, $id, $client) = @_;
5217:
5218: my $userinput = "$cmd:$id";
5219:
5220:
5221: $id=~s/\W/\_/g;
5222: my $store;
5223: my $execdir=$perlvar{'lonDaemons'};
5224: if ($store=IO::File->new("$execdir/tmp/$id.tmp")) {
5225: my $reply=<$store>;
1.387 albertel 5226: &Reply( $client, \$reply, $userinput);
1.238 foxr 5227: close $store;
5228: } else {
5229: &Failure( $client, "error: ".($!+0)."IO::File->new Failed ".
5230: "while attempting tmpget\n", $userinput);
5231: }
5232:
5233: return 1;
5234: }
5235: ®ister_handler("tmpget", \&tmp_get_handler, 0, 1, 0);
1.263 albertel 5236:
1.238 foxr 5237: #
5238: # Process the tmpdel command. This command deletes a temp resource
5239: # created by the tmpput command.
5240: #
5241: # Parameters:
5242: # $cmd - Command that got us here.
5243: # $id - Id of the temporary resource created.
5244: # $client - socket open on the client process.
5245: #
5246: # Returns:
5247: # 1 - Indicating processing should continue.
5248: # Side Effects:
5249: # A file is deleted
5250: # A reply is sent to the client.
5251: sub tmp_del_handler {
5252: my ($cmd, $id, $client) = @_;
5253:
5254: my $userinput= "$cmd:$id";
5255:
5256: chomp($id);
5257: $id=~s/\W/\_/g;
5258: my $execdir=$perlvar{'lonDaemons'};
5259: if (unlink("$execdir/tmp/$id.tmp")) {
5260: &Reply($client, "ok\n", $userinput);
5261: } else {
5262: &Failure( $client, "error: ".($!+0)."Unlink tmp Failed ".
5263: "while attempting tmpdel\n", $userinput);
5264: }
5265:
5266: return 1;
5267:
5268: }
5269: ®ister_handler("tmpdel", \&tmp_del_handler, 0, 1, 0);
1.263 albertel 5270:
1.238 foxr 5271: #
1.489.2.32 raeburn 5272: # Process the delbalcookie command. This command deletes a balancer
5273: # cookie in the lonBalancedir directory created by switchserver
5274: #
5275: # Parameters:
5276: # $cmd - Command that got us here.
5277: # $cookie - Cookie to be deleted.
5278: # $client - socket open on the client process.
5279: #
5280: # Returns:
5281: # 1 - Indicating processing should continue.
5282: # Side Effects:
5283: # A cookie file is deleted from the lonBalancedir directory
5284: # A reply is sent to the client.
5285: sub del_balcookie_handler {
5286: my ($cmd, $cookie, $client) = @_;
5287:
5288: my $userinput= "$cmd:$cookie";
5289:
5290: chomp($cookie);
5291: my $deleted = '';
5292: if ($cookie =~ /^$LONCAPA::match_domain\_$LONCAPA::match_username\_[a-f0-9]{32}$/) {
5293: my $execdir=$perlvar{'lonBalanceDir'};
5294: if (-e "$execdir/$cookie.id") {
5295: if (open(my $fh,'<',"$execdir/$cookie.id")) {
5296: my $dodelete;
5297: while (my $line = <$fh>) {
5298: chomp($line);
5299: if ($line eq $clientname) {
5300: $dodelete = 1;
5301: last;
5302: }
5303: }
5304: close($fh);
5305: if ($dodelete) {
5306: if (unlink("$execdir/$cookie.id")) {
5307: $deleted = 1;
5308: }
5309: }
5310: }
5311: }
5312: }
5313: if ($deleted) {
5314: &Reply($client, "ok\n", $userinput);
5315: } else {
5316: &Failure( $client, "error: ".($!+0)."Unlinking cookie file Failed ".
5317: "while attempting delbalcookie\n", $userinput);
5318: }
5319: return 1;
5320: }
5321: ®ister_handler("delbalcookie", \&del_balcookie_handler, 0, 1, 0);
5322:
5323: #
1.246 foxr 5324: # Processes the setannounce command. This command
5325: # creates a file named announce.txt in the top directory of
5326: # the documentn root and sets its contents. The announce.txt file is
5327: # printed in its entirety at the LonCAPA login page. Note:
5328: # once the announcement.txt fileis created it cannot be deleted.
5329: # However, setting the contents of the file to empty removes the
5330: # announcement from the login page of loncapa so who cares.
5331: #
5332: # Parameters:
5333: # $cmd - The command that got us dispatched.
5334: # $announcement - The text of the announcement.
5335: # $client - Socket open on the client process.
5336: # Retunrns:
5337: # 1 - Indicating request processing should continue
5338: # Side Effects:
5339: # The file {DocRoot}/announcement.txt is created.
5340: # A reply is sent to $client.
5341: #
5342: sub set_announce_handler {
5343: my ($cmd, $announcement, $client) = @_;
5344:
5345: my $userinput = "$cmd:$announcement";
5346:
5347: chomp($announcement);
5348: $announcement=&unescape($announcement);
5349: if (my $store=IO::File->new('>'.$perlvar{'lonDocRoot'}.
5350: '/announcement.txt')) {
5351: print $store $announcement;
5352: close $store;
5353: &Reply($client, "ok\n", $userinput);
5354: } else {
5355: &Failure($client, "error: ".($!+0)."\n", $userinput);
5356: }
5357:
5358: return 1;
5359: }
5360: ®ister_handler("setannounce", \&set_announce_handler, 0, 1, 0);
1.263 albertel 5361:
1.246 foxr 5362: #
5363: # Return the version of the daemon. This can be used to determine
5364: # the compatibility of cross version installations or, alternatively to
5365: # simply know who's out of date and who isn't. Note that the version
5366: # is returned concatenated with the tail.
5367: # Parameters:
5368: # $cmd - the request that dispatched to us.
5369: # $tail - Tail of the request (client's version?).
5370: # $client - Socket open on the client.
5371: #Returns:
5372: # 1 - continue processing requests.
5373: # Side Effects:
5374: # Replies with version to $client.
5375: sub get_version_handler {
5376: my ($cmd, $tail, $client) = @_;
5377:
5378: my $userinput = $cmd.$tail;
5379:
5380: &Reply($client, &version($userinput)."\n", $userinput);
5381:
5382:
5383: return 1;
5384: }
5385: ®ister_handler("version", \&get_version_handler, 0, 1, 0);
1.263 albertel 5386:
1.246 foxr 5387: # Set the current host and domain. This is used to support
5388: # multihomed systems. Each IP of the system, or even separate daemons
5389: # on the same IP can be treated as handling a separate lonCAPA virtual
5390: # machine. This command selects the virtual lonCAPA. The client always
5391: # knows the right one since it is lonc and it is selecting the domain/system
5392: # from the hosts.tab file.
5393: # Parameters:
5394: # $cmd - Command that dispatched us.
5395: # $tail - Tail of the command (domain/host requested).
5396: # $socket - Socket open on the client.
5397: #
5398: # Returns:
5399: # 1 - Indicates the program should continue to process requests.
5400: # Side-effects:
5401: # The default domain/system context is modified for this daemon.
5402: # a reply is sent to the client.
5403: #
5404: sub set_virtual_host_handler {
5405: my ($cmd, $tail, $socket) = @_;
5406:
5407: my $userinput ="$cmd:$tail";
5408:
5409: &Reply($client, &sethost($userinput)."\n", $userinput);
5410:
5411:
5412: return 1;
5413: }
1.247 albertel 5414: ®ister_handler("sethost", \&set_virtual_host_handler, 0, 1, 0);
1.246 foxr 5415:
5416: # Process a request to exit:
5417: # - "bye" is sent to the client.
5418: # - The client socket is shutdown and closed.
5419: # - We indicate to the caller that we should exit.
5420: # Formal Parameters:
5421: # $cmd - The command that got us here.
5422: # $tail - Tail of the command (empty).
5423: # $client - Socket open on the tail.
5424: # Returns:
5425: # 0 - Indicating the program should exit!!
5426: #
5427: sub exit_handler {
5428: my ($cmd, $tail, $client) = @_;
5429:
5430: my $userinput = "$cmd:$tail";
5431:
5432: &logthis("Client $clientip ($clientname) hanging up: $userinput");
5433: &Reply($client, "bye\n", $userinput);
5434: $client->shutdown(2); # shutdown the socket forcibly.
5435: $client->close();
5436:
5437: return 0;
5438: }
1.248 foxr 5439: ®ister_handler("exit", \&exit_handler, 0,1,1);
5440: ®ister_handler("init", \&exit_handler, 0,1,1);
5441: ®ister_handler("quit", \&exit_handler, 0,1,1);
5442:
5443: # Determine if auto-enrollment is enabled.
5444: # Note that the original had what I believe to be a defect.
5445: # The original returned 0 if the requestor was not a registerd client.
5446: # It should return "refused".
5447: # Formal Parameters:
5448: # $cmd - The command that invoked us.
5449: # $tail - The tail of the command (Extra command parameters.
5450: # $client - The socket open on the client that issued the request.
5451: # Returns:
5452: # 1 - Indicating processing should continue.
5453: #
5454: sub enrollment_enabled_handler {
5455: my ($cmd, $tail, $client) = @_;
5456: my $userinput = $cmd.":".$tail; # For logging purposes.
5457:
5458:
1.337 albertel 5459: my ($cdom) = split(/:/, $tail, 2); # Domain we're asking about.
5460:
1.248 foxr 5461: my $outcome = &localenroll::run($cdom);
1.387 albertel 5462: &Reply($client, \$outcome, $userinput);
1.248 foxr 5463:
5464: return 1;
5465: }
5466: ®ister_handler("autorun", \&enrollment_enabled_handler, 0, 1, 0);
5467:
1.417 raeburn 5468: #
1.423 raeburn 5469: # Validate an institutional code used for a LON-CAPA course.
1.417 raeburn 5470: #
5471: # Formal Parameters:
5472: # $cmd - The command request that got us dispatched.
5473: # $tail - The tail of the command. In this case,
5474: # this is a colon separated set of words that will be split
5475: # into:
1.424 raeburn 5476: # $dom - The domain for which the check of
5477: # institutional course code will occur.
5478: #
5479: # $instcode - The institutional code for the course
5480: # being requested, or validated for rights
5481: # to request.
5482: #
5483: # $owner - The course requestor (who will be the
5484: # course owner, in the form username:domain
5485: #
1.417 raeburn 5486: # $client - Socket open on the client.
5487: # Returns:
5488: # 1 - Indicating processing should continue.
5489: #
5490: sub validate_instcode_handler {
5491: my ($cmd, $tail, $client) = @_;
5492: my $userinput = "$cmd:$tail";
1.423 raeburn 5493: my ($dom,$instcode,$owner) = split(/:/, $tail);
1.422 raeburn 5494: $instcode = &unescape($instcode);
5495: $owner = &unescape($owner);
1.489.2.3 raeburn 5496: my ($outcome,$description,$credits) =
1.426 raeburn 5497: &localenroll::validate_instcode($dom,$instcode,$owner);
1.489.2.3 raeburn 5498: my $result = &escape($outcome).'&'.&escape($description).'&'.
5499: &escape($credits);
1.426 raeburn 5500: &Reply($client, \$result, $userinput);
1.417 raeburn 5501:
5502: return 1;
5503: }
5504: ®ister_handler("autovalidateinstcode", \&validate_instcode_handler, 0, 1, 0);
5505:
1.248 foxr 5506: # Get the official sections for which auto-enrollment is possible.
5507: # Since the admin people won't know about 'unofficial sections'
5508: # we cannot auto-enroll on them.
5509: # Formal Parameters:
5510: # $cmd - The command request that got us dispatched here.
5511: # $tail - The remainder of the request. In our case this
5512: # will be split into:
5513: # $coursecode - The course name from the admin point of view.
5514: # $cdom - The course's domain(?).
5515: # $client - Socket open on the client.
5516: # Returns:
5517: # 1 - Indiciting processing should continue.
5518: #
5519: sub get_sections_handler {
5520: my ($cmd, $tail, $client) = @_;
5521: my $userinput = "$cmd:$tail";
5522:
5523: my ($coursecode, $cdom) = split(/:/, $tail);
5524: my @secs = &localenroll::get_sections($coursecode,$cdom);
5525: my $seclist = &escape(join(':',@secs));
5526:
1.387 albertel 5527: &Reply($client, \$seclist, $userinput);
1.248 foxr 5528:
5529:
5530: return 1;
5531: }
5532: ®ister_handler("autogetsections", \&get_sections_handler, 0, 1, 0);
5533:
5534: # Validate the owner of a new course section.
5535: #
5536: # Formal Parameters:
5537: # $cmd - Command that got us dispatched.
5538: # $tail - the remainder of the command. For us this consists of a
5539: # colon separated string containing:
5540: # $inst - Course Id from the institutions point of view.
5541: # $owner - Proposed owner of the course.
5542: # $cdom - Domain of the course (from the institutions
5543: # point of view?)..
5544: # $client - Socket open on the client.
5545: #
5546: # Returns:
5547: # 1 - Processing should continue.
5548: #
5549: sub validate_course_owner_handler {
5550: my ($cmd, $tail, $client) = @_;
5551: my $userinput = "$cmd:$tail";
1.470 raeburn 5552: my ($inst_course_id, $owner, $cdom, $coowners) = split(/:/, $tail);
5553:
1.336 raeburn 5554: $owner = &unescape($owner);
1.470 raeburn 5555: $coowners = &unescape($coowners);
5556: my $outcome = &localenroll::new_course($inst_course_id,$owner,$cdom,$coowners);
1.387 albertel 5557: &Reply($client, \$outcome, $userinput);
1.248 foxr 5558:
5559:
5560:
5561: return 1;
5562: }
5563: ®ister_handler("autonewcourse", \&validate_course_owner_handler, 0, 1, 0);
1.263 albertel 5564:
1.248 foxr 5565: #
5566: # Validate a course section in the official schedule of classes
5567: # from the institutions point of view (part of autoenrollment).
5568: #
5569: # Formal Parameters:
5570: # $cmd - The command request that got us dispatched.
5571: # $tail - The tail of the command. In this case,
5572: # this is a colon separated set of words that will be split
5573: # into:
5574: # $inst_course_id - The course/section id from the
5575: # institutions point of view.
5576: # $cdom - The domain from the institutions
5577: # point of view.
5578: # $client - Socket open on the client.
5579: # Returns:
5580: # 1 - Indicating processing should continue.
5581: #
5582: sub validate_course_section_handler {
5583: my ($cmd, $tail, $client) = @_;
5584: my $userinput = "$cmd:$tail";
5585: my ($inst_course_id, $cdom) = split(/:/, $tail);
5586:
5587: my $outcome=&localenroll::validate_courseID($inst_course_id,$cdom);
1.387 albertel 5588: &Reply($client, \$outcome, $userinput);
1.248 foxr 5589:
5590:
5591: return 1;
5592: }
5593: ®ister_handler("autovalidatecourse", \&validate_course_section_handler, 0, 1, 0);
5594:
5595: #
1.340 raeburn 5596: # Validate course owner's access to enrollment data for specific class section.
5597: #
5598: #
5599: # Formal Parameters:
5600: # $cmd - The command request that got us dispatched.
5601: # $tail - The tail of the command. In this case this is a colon separated
1.489.2.29 raeburn 5602: # set of values that will be split into:
1.340 raeburn 5603: # $inst_class - Institutional code for the specific class section
1.489.2.29 raeburn 5604: # $ownerlist - An escaped comma-separated list of username:domain
5605: # of the course owner, and co-owner(s).
1.340 raeburn 5606: # $cdom - The domain of the course from the institution's
5607: # point of view.
5608: # $client - The socket open on the client.
5609: # Returns:
5610: # 1 - continue processing.
5611: #
5612:
5613: sub validate_class_access_handler {
5614: my ($cmd, $tail, $client) = @_;
5615: my $userinput = "$cmd:$tail";
1.383 raeburn 5616: my ($inst_class,$ownerlist,$cdom) = split(/:/, $tail);
1.392 raeburn 5617: my $owners = &unescape($ownerlist);
1.341 albertel 5618: my $outcome;
5619: eval {
5620: local($SIG{__DIE__})='DEFAULT';
1.392 raeburn 5621: $outcome=&localenroll::check_section($inst_class,$owners,$cdom);
1.341 albertel 5622: };
1.387 albertel 5623: &Reply($client,\$outcome, $userinput);
1.340 raeburn 5624:
5625: return 1;
5626: }
5627: ®ister_handler("autovalidateclass_sec", \&validate_class_access_handler, 0, 1, 0);
5628:
5629: #
1.489.2.29 raeburn 5630: # Validate course owner or co-owners(s) access to enrollment data for all sections
5631: # and crosslistings for a particular course.
5632: #
5633: #
5634: # Formal Parameters:
5635: # $cmd - The command request that got us dispatched.
5636: # $tail - The tail of the command. In this case this is a colon separated
5637: # set of values that will be split into:
5638: # $ownerlist - An escaped comma-separated list of username:domain
5639: # of the course owner, and co-owner(s).
5640: # $cdom - The domain of the course from the institution's
5641: # point of view.
5642: # $classes - Frozen hash of institutional course sections and
5643: # crosslistings.
5644: # $client - The socket open on the client.
5645: # Returns:
5646: # 1 - continue processing.
5647: #
5648:
5649: sub validate_classes_handler {
5650: my ($cmd, $tail, $client) = @_;
5651: my $userinput = "$cmd:$tail";
5652: my ($ownerlist,$cdom,$classes) = split(/:/, $tail);
5653: my $classesref = &Apache::lonnet::thaw_unescape($classes);
5654: my $owners = &unescape($ownerlist);
5655: my $result;
5656: eval {
5657: local($SIG{__DIE__})='DEFAULT';
5658: my %validations;
5659: my $response = &localenroll::check_instclasses($owners,$cdom,$classesref,
5660: \%validations);
5661: if ($response eq 'ok') {
5662: foreach my $key (keys(%validations)) {
5663: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($validations{$key}).'&';
5664: }
5665: $result =~ s/\&$//;
5666: } else {
5667: $result = 'error';
5668: }
5669: };
5670: if (!$@) {
5671: &Reply($client, \$result, $userinput);
5672: } else {
5673: &Failure($client,"unknown_cmd\n",$userinput);
5674: }
5675: return 1;
5676: }
5677: ®ister_handler("autovalidateinstclasses", \&validate_classes_handler, 0, 1, 0);
5678:
5679: #
1.340 raeburn 5680: # Create a password for a new LON-CAPA user added by auto-enrollment.
5681: # Only used for case where authentication method for new user is localauth
1.248 foxr 5682: #
5683: # Formal Parameters:
5684: # $cmd - The command request that got us dispatched.
5685: # $tail - The tail of the command. In this case this is a colon separated
5686: # set of words that will be split into:
1.340 raeburn 5687: # $authparam - An authentication parameter (localauth parameter).
1.248 foxr 5688: # $cdom - The domain of the course from the institution's
5689: # point of view.
5690: # $client - The socket open on the client.
5691: # Returns:
5692: # 1 - continue processing.
5693: #
5694: sub create_auto_enroll_password_handler {
5695: my ($cmd, $tail, $client) = @_;
5696: my $userinput = "$cmd:$tail";
5697:
5698: my ($authparam, $cdom) = split(/:/, $userinput);
5699:
5700: my ($create_passwd,$authchk);
5701: ($authparam,
5702: $create_passwd,
5703: $authchk) = &localenroll::create_password($authparam,$cdom);
5704:
5705: &Reply($client, &escape($authparam.':'.$create_passwd.':'.$authchk)."\n",
5706: $userinput);
5707:
5708:
5709: return 1;
5710: }
5711: ®ister_handler("autocreatepassword", \&create_auto_enroll_password_handler,
5712: 0, 1, 0);
5713:
1.489.2.22 raeburn 5714: sub auto_export_grades_handler {
5715: my ($cmd, $tail, $client) = @_;
5716: my $userinput = "$cmd:$tail";
5717: my ($cdom,$cnum,$info,$data) = split(/:/,$tail);
5718: my $inforef = &Apache::lonnet::thaw_unescape($info);
5719: my $dataref = &Apache::lonnet::thaw_unescape($data);
5720: my ($outcome,$result);;
5721: eval {
5722: local($SIG{__DIE__})='DEFAULT';
5723: my %rtnhash;
5724: $outcome=&localenroll::export_grades($cdom,$cnum,$inforef,$dataref,\%rtnhash);
5725: if ($outcome eq 'ok') {
5726: foreach my $key (keys(%rtnhash)) {
5727: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($rtnhash{$key}).'&';
5728: }
5729: $result =~ s/\&$//;
5730: }
5731: };
5732: if (!$@) {
5733: if ($outcome eq 'ok') {
5734: if ($cipher) {
5735: my $cmdlength=length($result);
5736: $result.=" ";
5737: my $encresult='';
5738: for (my $encidx=0;$encidx<=$cmdlength;$encidx+=8) {
5739: $encresult.= unpack("H16",
5740: $cipher->encrypt(substr($result,
5741: $encidx,
5742: 8)));
5743: }
5744: &Reply( $client, "enc:$cmdlength:$encresult\n", $userinput);
5745: } else {
5746: &Failure( $client, "error:no_key\n", $userinput);
5747: }
5748: } else {
5749: &Reply($client, "$outcome\n", $userinput);
5750: }
5751: } else {
5752: &Failure($client,"export_error\n",$userinput);
5753: }
5754: return 1;
5755: }
5756: ®ister_handler("autoexportgrades", \&auto_export_grades_handler,
1.489.2.35 raeburn 5757: 1, 1, 0);
1.489.2.22 raeburn 5758:
5759:
1.248 foxr 5760: # Retrieve and remove temporary files created by/during autoenrollment.
5761: #
5762: # Formal Parameters:
5763: # $cmd - The command that got us dispatched.
5764: # $tail - The tail of the command. In our case this is a colon
5765: # separated list that will be split into:
1.489.2.24 raeburn 5766: # $filename - The name of the file to retrieve.
1.248 foxr 5767: # The filename is given as a path relative to
5768: # the LonCAPA temp file directory.
5769: # $client - Socket open on the client.
5770: #
5771: # Returns:
5772: # 1 - Continue processing.
5773: sub retrieve_auto_file_handler {
5774: my ($cmd, $tail, $client) = @_;
5775: my $userinput = "cmd:$tail";
5776:
5777: my ($filename) = split(/:/, $tail);
5778:
5779: my $source = $perlvar{'lonDaemons'}.'/tmp/'.$filename;
1.489.2.20 raeburn 5780: if ($filename =~m{/\.\./}) {
5781: &Failure($client, "refused\n", $userinput);
1.489.2.24 raeburn 5782: } elsif ($filename !~ /^$LONCAPA::match_domain\_$LONCAPA::match_courseid\_.+_classlist\.xml$/) {
5783: &Failure($client, "refused\n", $userinput);
1.489.2.20 raeburn 5784: } elsif ( (-e $source) && ($filename ne '') ) {
1.248 foxr 5785: my $reply = '';
5786: if (open(my $fh,$source)) {
5787: while (<$fh>) {
5788: chomp($_);
5789: $_ =~ s/^\s+//g;
5790: $_ =~ s/\s+$//g;
5791: $reply .= $_;
5792: }
5793: close($fh);
5794: &Reply($client, &escape($reply)."\n", $userinput);
5795:
5796: # Does this have to be uncommented??!? (RF).
5797: #
5798: # unlink($source);
5799: } else {
5800: &Failure($client, "error\n", $userinput);
5801: }
5802: } else {
5803: &Failure($client, "error\n", $userinput);
5804: }
5805:
5806:
5807: return 1;
5808: }
5809: ®ister_handler("autoretrieve", \&retrieve_auto_file_handler, 0,1,0);
5810:
1.423 raeburn 5811: sub crsreq_checks_handler {
5812: my ($cmd, $tail, $client) = @_;
5813: my $userinput = "$cmd:$tail";
5814: my $dom = $tail;
5815: my $result;
1.489.2.12 raeburn 5816: my @reqtypes = ('official','unofficial','community','textbook');
1.423 raeburn 5817: eval {
5818: local($SIG{__DIE__})='DEFAULT';
5819: my %validations;
1.424 raeburn 5820: my $response = &localenroll::crsreq_checks($dom,\@reqtypes,
5821: \%validations);
1.423 raeburn 5822: if ($response eq 'ok') {
5823: foreach my $key (keys(%validations)) {
5824: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($validations{$key}).'&';
5825: }
5826: $result =~ s/\&$//;
5827: } else {
5828: $result = 'error';
5829: }
5830: };
5831: if (!$@) {
5832: &Reply($client, \$result, $userinput);
5833: } else {
5834: &Failure($client,"unknown_cmd\n",$userinput);
5835: }
5836: return 1;
5837: }
5838: ®ister_handler("autocrsreqchecks", \&crsreq_checks_handler, 0, 1, 0);
5839:
5840: sub validate_crsreq_handler {
5841: my ($cmd, $tail, $client) = @_;
5842: my $userinput = "$cmd:$tail";
1.489.2.13 raeburn 5843: my ($dom,$owner,$crstype,$inststatuslist,$instcode,$instseclist,$customdata) = split(/:/, $tail);
1.423 raeburn 5844: $instcode = &unescape($instcode);
5845: $owner = &unescape($owner);
5846: $crstype = &unescape($crstype);
5847: $inststatuslist = &unescape($inststatuslist);
5848: $instcode = &unescape($instcode);
5849: $instseclist = &unescape($instseclist);
1.489.2.13 raeburn 5850: my $custominfo = &Apache::lonnet::thaw_unescape($customdata);
1.423 raeburn 5851: my $outcome;
5852: eval {
5853: local($SIG{__DIE__})='DEFAULT';
5854: $outcome = &localenroll::validate_crsreq($dom,$owner,$crstype,
5855: $inststatuslist,$instcode,
1.489.2.13 raeburn 5856: $instseclist,$custominfo);
1.423 raeburn 5857: };
5858: if (!$@) {
5859: &Reply($client, \$outcome, $userinput);
5860: } else {
5861: &Failure($client,"unknown_cmd\n",$userinput);
5862: }
5863: return 1;
5864: }
5865: ®ister_handler("autocrsreqvalidation", \&validate_crsreq_handler, 0, 1, 0);
5866:
1.489.2.11 raeburn 5867: sub crsreq_update_handler {
5868: my ($cmd, $tail, $client) = @_;
5869: my $userinput = "$cmd:$tail";
1.489.2.14 raeburn 5870: my ($cdom,$cnum,$crstype,$action,$ownername,$ownerdomain,$fullname,$title,$code,
5871: $accessstart,$accessend,$infohashref) =
1.489.2.11 raeburn 5872: split(/:/, $tail);
5873: $crstype = &unescape($crstype);
5874: $action = &unescape($action);
5875: $ownername = &unescape($ownername);
5876: $ownerdomain = &unescape($ownerdomain);
5877: $fullname = &unescape($fullname);
5878: $title = &unescape($title);
5879: $code = &unescape($code);
1.489.2.14 raeburn 5880: $accessstart = &unescape($accessstart);
5881: $accessend = &unescape($accessend);
1.489.2.11 raeburn 5882: my $incoming = &Apache::lonnet::thaw_unescape($infohashref);
5883: my ($result,$outcome);
5884: eval {
5885: local($SIG{__DIE__})='DEFAULT';
5886: my %rtnhash;
5887: $outcome = &localenroll::crsreq_updates($cdom,$cnum,$crstype,$action,
5888: $ownername,$ownerdomain,$fullname,
1.489.2.14 raeburn 5889: $title,$code,$accessstart,$accessend,
5890: $incoming,\%rtnhash);
1.489.2.11 raeburn 5891: if ($outcome eq 'ok') {
1.489.2.18 raeburn 5892: my @posskeys = qw(createdweb createdmsg createdcustomized createdactions queuedweb queuedmsg formitems reviewweb validationjs onload javascript);
1.489.2.11 raeburn 5893: foreach my $key (keys(%rtnhash)) {
5894: if (grep(/^\Q$key\E/,@posskeys)) {
5895: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($rtnhash{$key}).'&';
5896: }
5897: }
5898: $result =~ s/\&$//;
5899: }
5900: };
5901: if (!$@) {
5902: if ($outcome eq 'ok') {
5903: &Reply($client, \$result, $userinput);
5904: } else {
5905: &Reply($client, "format_error\n", $userinput);
5906: }
5907: } else {
5908: &Failure($client,"unknown_cmd\n",$userinput);
5909: }
5910: return 1;
5911: }
5912: ®ister_handler("autocrsrequpdate", \&crsreq_update_handler, 0, 1, 0);
5913:
1.248 foxr 5914: #
5915: # Read and retrieve institutional code format (for support form).
5916: # Formal Parameters:
5917: # $cmd - Command that dispatched us.
5918: # $tail - Tail of the command. In this case it conatins
5919: # the course domain and the coursename.
5920: # $client - Socket open on the client.
5921: # Returns:
5922: # 1 - Continue processing.
5923: #
5924: sub get_institutional_code_format_handler {
5925: my ($cmd, $tail, $client) = @_;
5926: my $userinput = "$cmd:$tail";
5927:
5928: my $reply;
5929: my($cdom,$course) = split(/:/,$tail);
5930: my @pairs = split/\&/,$course;
5931: my %instcodes = ();
5932: my %codes = ();
5933: my @codetitles = ();
5934: my %cat_titles = ();
5935: my %cat_order = ();
5936: foreach (@pairs) {
5937: my ($key,$value) = split/=/,$_;
5938: $instcodes{&unescape($key)} = &unescape($value);
5939: }
5940: my $formatreply = &localenroll::instcode_format($cdom,
5941: \%instcodes,
5942: \%codes,
5943: \@codetitles,
5944: \%cat_titles,
5945: \%cat_order);
5946: if ($formatreply eq 'ok') {
1.365 albertel 5947: my $codes_str = &Apache::lonnet::hash2str(%codes);
5948: my $codetitles_str = &Apache::lonnet::array2str(@codetitles);
5949: my $cat_titles_str = &Apache::lonnet::hash2str(%cat_titles);
5950: my $cat_order_str = &Apache::lonnet::hash2str(%cat_order);
1.248 foxr 5951: &Reply($client,
5952: $codes_str.':'.$codetitles_str.':'.$cat_titles_str.':'
5953: .$cat_order_str."\n",
5954: $userinput);
5955: } else {
5956: # this else branch added by RF since if not ok, lonc will
5957: # hang waiting on reply until timeout.
5958: #
5959: &Reply($client, "format_error\n", $userinput);
5960: }
5961:
5962: return 1;
5963: }
1.265 albertel 5964: ®ister_handler("autoinstcodeformat",
5965: \&get_institutional_code_format_handler,0,1,0);
1.246 foxr 5966:
1.345 raeburn 5967: sub get_institutional_defaults_handler {
5968: my ($cmd, $tail, $client) = @_;
5969: my $userinput = "$cmd:$tail";
5970:
5971: my $dom = $tail;
5972: my %defaults_hash;
5973: my @code_order;
5974: my $outcome;
5975: eval {
5976: local($SIG{__DIE__})='DEFAULT';
5977: $outcome = &localenroll::instcode_defaults($dom,\%defaults_hash,
5978: \@code_order);
5979: };
5980: if (!$@) {
5981: if ($outcome eq 'ok') {
5982: my $result='';
5983: while (my ($key,$value) = each(%defaults_hash)) {
5984: $result.=&escape($key).'='.&escape($value).'&';
5985: }
5986: $result .= 'code_order='.&escape(join('&',@code_order));
1.387 albertel 5987: &Reply($client,\$result,$userinput);
1.345 raeburn 5988: } else {
5989: &Reply($client,"error\n", $userinput);
5990: }
5991: } else {
5992: &Failure($client,"unknown_cmd\n",$userinput);
5993: }
5994: }
5995: ®ister_handler("autoinstcodedefaults",
5996: \&get_institutional_defaults_handler,0,1,0);
5997:
1.416 raeburn 5998: sub get_possible_instcodes_handler {
5999: my ($cmd, $tail, $client) = @_;
6000: my $userinput = "$cmd:$tail";
6001:
6002: my $reply;
6003: my $cdom = $tail;
1.417 raeburn 6004: my (@codetitles,%cat_titles,%cat_order,@code_order);
1.416 raeburn 6005: my $formatreply = &localenroll::possible_instcodes($cdom,
6006: \@codetitles,
6007: \%cat_titles,
1.417 raeburn 6008: \%cat_order,
6009: \@code_order);
1.416 raeburn 6010: if ($formatreply eq 'ok') {
6011: my $result = join('&',map {&escape($_);} (@codetitles)).':';
1.417 raeburn 6012: $result .= join('&',map {&escape($_);} (@code_order)).':';
1.416 raeburn 6013: foreach my $key (keys(%cat_titles)) {
6014: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($cat_titles{$key}).'&';
6015: }
6016: $result =~ s/\&$//;
6017: $result .= ':';
6018: foreach my $key (keys(%cat_order)) {
6019: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($cat_order{$key}).'&';
6020: }
6021: $result =~ s/\&$//;
6022: &Reply($client,\$result,$userinput);
6023: } else {
6024: &Reply($client, "format_error\n", $userinput);
6025: }
6026: return 1;
6027: }
6028: ®ister_handler("autopossibleinstcodes",
6029: \&get_possible_instcodes_handler,0,1,0);
6030:
1.381 raeburn 6031: sub get_institutional_user_rules {
6032: my ($cmd, $tail, $client) = @_;
6033: my $userinput = "$cmd:$tail";
6034: my $dom = &unescape($tail);
6035: my (%rules_hash,@rules_order);
6036: my $outcome;
6037: eval {
6038: local($SIG{__DIE__})='DEFAULT';
6039: $outcome = &localenroll::username_rules($dom,\%rules_hash,\@rules_order);
6040: };
6041: if (!$@) {
6042: if ($outcome eq 'ok') {
6043: my $result;
6044: foreach my $key (keys(%rules_hash)) {
6045: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($rules_hash{$key}).'&';
6046: }
6047: $result =~ s/\&$//;
6048: $result .= ':';
6049: if (@rules_order > 0) {
6050: foreach my $item (@rules_order) {
6051: $result .= &escape($item).'&';
6052: }
6053: }
6054: $result =~ s/\&$//;
1.387 albertel 6055: &Reply($client,\$result,$userinput);
1.381 raeburn 6056: } else {
6057: &Reply($client,"error\n", $userinput);
6058: }
6059: } else {
6060: &Failure($client,"unknown_cmd\n",$userinput);
6061: }
6062: }
6063: ®ister_handler("instuserrules",\&get_institutional_user_rules,0,1,0);
6064:
1.389 raeburn 6065: sub get_institutional_id_rules {
6066: my ($cmd, $tail, $client) = @_;
6067: my $userinput = "$cmd:$tail";
6068: my $dom = &unescape($tail);
6069: my (%rules_hash,@rules_order);
6070: my $outcome;
6071: eval {
6072: local($SIG{__DIE__})='DEFAULT';
6073: $outcome = &localenroll::id_rules($dom,\%rules_hash,\@rules_order);
6074: };
6075: if (!$@) {
6076: if ($outcome eq 'ok') {
6077: my $result;
6078: foreach my $key (keys(%rules_hash)) {
6079: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($rules_hash{$key}).'&';
6080: }
6081: $result =~ s/\&$//;
6082: $result .= ':';
6083: if (@rules_order > 0) {
6084: foreach my $item (@rules_order) {
6085: $result .= &escape($item).'&';
6086: }
6087: }
6088: $result =~ s/\&$//;
6089: &Reply($client,\$result,$userinput);
6090: } else {
6091: &Reply($client,"error\n", $userinput);
6092: }
6093: } else {
6094: &Failure($client,"unknown_cmd\n",$userinput);
6095: }
6096: }
6097: ®ister_handler("instidrules",\&get_institutional_id_rules,0,1,0);
6098:
1.397 raeburn 6099: sub get_institutional_selfcreate_rules {
1.396 raeburn 6100: my ($cmd, $tail, $client) = @_;
6101: my $userinput = "$cmd:$tail";
6102: my $dom = &unescape($tail);
6103: my (%rules_hash,@rules_order);
6104: my $outcome;
6105: eval {
6106: local($SIG{__DIE__})='DEFAULT';
1.397 raeburn 6107: $outcome = &localenroll::selfcreate_rules($dom,\%rules_hash,\@rules_order);
1.396 raeburn 6108: };
6109: if (!$@) {
6110: if ($outcome eq 'ok') {
6111: my $result;
6112: foreach my $key (keys(%rules_hash)) {
6113: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($rules_hash{$key}).'&';
6114: }
6115: $result =~ s/\&$//;
6116: $result .= ':';
6117: if (@rules_order > 0) {
6118: foreach my $item (@rules_order) {
6119: $result .= &escape($item).'&';
6120: }
6121: }
6122: $result =~ s/\&$//;
6123: &Reply($client,\$result,$userinput);
6124: } else {
6125: &Reply($client,"error\n", $userinput);
6126: }
6127: } else {
6128: &Failure($client,"unknown_cmd\n",$userinput);
6129: }
6130: }
1.397 raeburn 6131: ®ister_handler("instemailrules",\&get_institutional_selfcreate_rules,0,1,0);
1.396 raeburn 6132:
1.381 raeburn 6133:
6134: sub institutional_username_check {
6135: my ($cmd, $tail, $client) = @_;
6136: my $userinput = "$cmd:$tail";
6137: my %rulecheck;
6138: my $outcome;
6139: my ($udom,$uname,@rules) = split(/:/,$tail);
6140: $udom = &unescape($udom);
6141: $uname = &unescape($uname);
6142: @rules = map {&unescape($_);} (@rules);
6143: eval {
6144: local($SIG{__DIE__})='DEFAULT';
6145: $outcome = &localenroll::username_check($udom,$uname,\@rules,\%rulecheck);
6146: };
6147: if (!$@) {
6148: if ($outcome eq 'ok') {
6149: my $result='';
6150: foreach my $key (keys(%rulecheck)) {
6151: $result.=&escape($key).'='.&Apache::lonnet::freeze_escape($rulecheck{$key}).'&';
6152: }
1.387 albertel 6153: &Reply($client,\$result,$userinput);
1.381 raeburn 6154: } else {
6155: &Reply($client,"error\n", $userinput);
6156: }
6157: } else {
6158: &Failure($client,"unknown_cmd\n",$userinput);
6159: }
6160: }
6161: ®ister_handler("instrulecheck",\&institutional_username_check,0,1,0);
6162:
1.389 raeburn 6163: sub institutional_id_check {
6164: my ($cmd, $tail, $client) = @_;
6165: my $userinput = "$cmd:$tail";
6166: my %rulecheck;
6167: my $outcome;
6168: my ($udom,$id,@rules) = split(/:/,$tail);
6169: $udom = &unescape($udom);
6170: $id = &unescape($id);
6171: @rules = map {&unescape($_);} (@rules);
6172: eval {
6173: local($SIG{__DIE__})='DEFAULT';
6174: $outcome = &localenroll::id_check($udom,$id,\@rules,\%rulecheck);
6175: };
6176: if (!$@) {
6177: if ($outcome eq 'ok') {
6178: my $result='';
6179: foreach my $key (keys(%rulecheck)) {
6180: $result.=&escape($key).'='.&Apache::lonnet::freeze_escape($rulecheck{$key}).'&';
6181: }
6182: &Reply($client,\$result,$userinput);
6183: } else {
6184: &Reply($client,"error\n", $userinput);
6185: }
6186: } else {
6187: &Failure($client,"unknown_cmd\n",$userinput);
6188: }
6189: }
6190: ®ister_handler("instidrulecheck",\&institutional_id_check,0,1,0);
1.345 raeburn 6191:
1.397 raeburn 6192: sub institutional_selfcreate_check {
1.396 raeburn 6193: my ($cmd, $tail, $client) = @_;
6194: my $userinput = "$cmd:$tail";
6195: my %rulecheck;
6196: my $outcome;
6197: my ($udom,$email,@rules) = split(/:/,$tail);
6198: $udom = &unescape($udom);
6199: $email = &unescape($email);
6200: @rules = map {&unescape($_);} (@rules);
6201: eval {
6202: local($SIG{__DIE__})='DEFAULT';
1.397 raeburn 6203: $outcome = &localenroll::selfcreate_check($udom,$email,\@rules,\%rulecheck);
1.396 raeburn 6204: };
6205: if (!$@) {
6206: if ($outcome eq 'ok') {
6207: my $result='';
6208: foreach my $key (keys(%rulecheck)) {
6209: $result.=&escape($key).'='.&Apache::lonnet::freeze_escape($rulecheck{$key}).'&';
6210: }
6211: &Reply($client,\$result,$userinput);
6212: } else {
6213: &Reply($client,"error\n", $userinput);
6214: }
6215: } else {
6216: &Failure($client,"unknown_cmd\n",$userinput);
6217: }
6218: }
1.397 raeburn 6219: ®ister_handler("instselfcreatecheck",\&institutional_selfcreate_check,0,1,0);
1.396 raeburn 6220:
1.317 raeburn 6221: # Get domain specific conditions for import of student photographs to a course
6222: #
6223: # Retrieves information from photo_permission subroutine in localenroll.
6224: # Returns outcome (ok) if no processing errors, and whether course owner is
6225: # required to accept conditions of use (yes/no).
6226: #
6227: #
6228: sub photo_permission_handler {
6229: my ($cmd, $tail, $client) = @_;
6230: my $userinput = "$cmd:$tail";
6231: my $cdom = $tail;
6232: my ($perm_reqd,$conditions);
1.320 albertel 6233: my $outcome;
6234: eval {
6235: local($SIG{__DIE__})='DEFAULT';
6236: $outcome = &localenroll::photo_permission($cdom,\$perm_reqd,
6237: \$conditions);
6238: };
6239: if (!$@) {
6240: &Reply($client, &escape($outcome.':'.$perm_reqd.':'. $conditions)."\n",
6241: $userinput);
6242: } else {
6243: &Failure($client,"unknown_cmd\n",$userinput);
6244: }
6245: return 1;
1.317 raeburn 6246: }
6247: ®ister_handler("autophotopermission",\&photo_permission_handler,0,1,0);
6248:
6249: #
6250: # Checks if student photo is available for a user in the domain, in the user's
6251: # directory (in /userfiles/internal/studentphoto.jpg).
6252: # Uses localstudentphoto:fetch() to ensure there is an up to date copy of
6253: # the student's photo.
6254:
6255: sub photo_check_handler {
6256: my ($cmd, $tail, $client) = @_;
6257: my $userinput = "$cmd:$tail";
6258: my ($udom,$uname,$pid) = split(/:/,$tail);
6259: $udom = &unescape($udom);
6260: $uname = &unescape($uname);
6261: $pid = &unescape($pid);
6262: my $path=&propath($udom,$uname).'/userfiles/internal/';
6263: if (!-e $path) {
6264: &mkpath($path);
6265: }
6266: my $response;
6267: my $result = &localstudentphoto::fetch($udom,$uname,$pid,\$response);
6268: $result .= ':'.$response;
6269: &Reply($client, &escape($result)."\n",$userinput);
1.320 albertel 6270: return 1;
1.317 raeburn 6271: }
6272: ®ister_handler("autophotocheck",\&photo_check_handler,0,1,0);
6273:
6274: #
6275: # Retrieve information from localenroll about whether to provide a button
6276: # for users who have enbled import of student photos to initiate an
6277: # update of photo files for registered students. Also include
6278: # comment to display alongside button.
6279:
6280: sub photo_choice_handler {
6281: my ($cmd, $tail, $client) = @_;
6282: my $userinput = "$cmd:$tail";
6283: my $cdom = &unescape($tail);
1.320 albertel 6284: my ($update,$comment);
6285: eval {
6286: local($SIG{__DIE__})='DEFAULT';
6287: ($update,$comment) = &localenroll::manager_photo_update($cdom);
6288: };
6289: if (!$@) {
6290: &Reply($client,&escape($update).':'.&escape($comment)."\n",$userinput);
6291: } else {
6292: &Failure($client,"unknown_cmd\n",$userinput);
6293: }
6294: return 1;
1.317 raeburn 6295: }
6296: ®ister_handler("autophotochoice",\&photo_choice_handler,0,1,0);
6297:
1.265 albertel 6298: #
6299: # Gets a student's photo to exist (in the correct image type) in the user's
6300: # directory.
6301: # Formal Parameters:
6302: # $cmd - The command request that got us dispatched.
6303: # $tail - A colon separated set of words that will be split into:
6304: # $domain - student's domain
6305: # $uname - student username
6306: # $type - image type desired
6307: # $client - The socket open on the client.
6308: # Returns:
6309: # 1 - continue processing.
1.317 raeburn 6310:
1.265 albertel 6311: sub student_photo_handler {
6312: my ($cmd, $tail, $client) = @_;
1.317 raeburn 6313: my ($domain,$uname,$ext,$type) = split(/:/, $tail);
1.265 albertel 6314:
1.317 raeburn 6315: my $path=&propath($domain,$uname). '/userfiles/internal/';
6316: my $filename = 'studentphoto.'.$ext;
6317: if ($type eq 'thumbnail') {
6318: $filename = 'studentphoto_tn.'.$ext;
6319: }
6320: if (-e $path.$filename) {
1.265 albertel 6321: &Reply($client,"ok\n","$cmd:$tail");
6322: return 1;
6323: }
6324: &mkpath($path);
1.317 raeburn 6325: my $file;
6326: if ($type eq 'thumbnail') {
1.320 albertel 6327: eval {
6328: local($SIG{__DIE__})='DEFAULT';
6329: $file=&localstudentphoto::fetch_thumbnail($domain,$uname);
6330: };
1.317 raeburn 6331: } else {
6332: $file=&localstudentphoto::fetch($domain,$uname);
6333: }
1.265 albertel 6334: if (!$file) {
6335: &Failure($client,"unavailable\n","$cmd:$tail");
6336: return 1;
6337: }
1.317 raeburn 6338: if (!-e $path.$filename) { &convert_photo($file,$path.$filename); }
6339: if (-e $path.$filename) {
1.265 albertel 6340: &Reply($client,"ok\n","$cmd:$tail");
6341: return 1;
6342: }
6343: &Failure($client,"unable_to_convert\n","$cmd:$tail");
6344: return 1;
6345: }
6346: ®ister_handler("studentphoto", \&student_photo_handler, 0, 1, 0);
1.246 foxr 6347:
1.361 raeburn 6348: sub inst_usertypes_handler {
6349: my ($cmd, $domain, $client) = @_;
6350: my $res;
6351: my $userinput = $cmd.":".$domain; # For logging purposes.
1.370 albertel 6352: my (%typeshash,@order,$result);
6353: eval {
6354: local($SIG{__DIE__})='DEFAULT';
6355: $result=&localenroll::inst_usertypes($domain,\%typeshash,\@order);
6356: };
6357: if ($result eq 'ok') {
1.361 raeburn 6358: if (keys(%typeshash) > 0) {
6359: foreach my $key (keys(%typeshash)) {
6360: $res.=&escape($key).'='.&escape($typeshash{$key}).'&';
6361: }
6362: }
6363: $res=~s/\&$//;
6364: $res .= ':';
6365: if (@order > 0) {
6366: foreach my $item (@order) {
6367: $res .= &escape($item).'&';
6368: }
6369: }
6370: $res=~s/\&$//;
6371: }
1.387 albertel 6372: &Reply($client, \$res, $userinput);
1.361 raeburn 6373: return 1;
6374: }
6375: ®ister_handler("inst_usertypes", \&inst_usertypes_handler, 0, 1, 0);
6376:
1.264 albertel 6377: # mkpath makes all directories for a file, expects an absolute path with a
6378: # file or a trailing / if just a dir is passed
6379: # returns 1 on success 0 on failure
6380: sub mkpath {
6381: my ($file)=@_;
6382: my @parts=split(/\//,$file,-1);
6383: my $now=$parts[0].'/'.$parts[1].'/'.$parts[2];
6384: for (my $i=3;$i<= ($#parts-1);$i++) {
1.265 albertel 6385: $now.='/'.$parts[$i];
1.264 albertel 6386: if (!-e $now) {
6387: if (!mkdir($now,0770)) { return 0; }
6388: }
6389: }
6390: return 1;
6391: }
6392:
1.207 foxr 6393: #---------------------------------------------------------------
6394: #
6395: # Getting, decoding and dispatching requests:
6396: #
6397: #
6398: # Get a Request:
6399: # Gets a Request message from the client. The transaction
6400: # is defined as a 'line' of text. We remove the new line
6401: # from the text line.
1.226 foxr 6402: #
1.211 albertel 6403: sub get_request {
1.207 foxr 6404: my $input = <$client>;
6405: chomp($input);
1.226 foxr 6406:
1.234 foxr 6407: &Debug("get_request: Request = $input\n");
1.207 foxr 6408:
6409: &status('Processing '.$clientname.':'.$input);
6410:
6411: return $input;
6412: }
1.212 foxr 6413: #---------------------------------------------------------------
6414: #
6415: # Process a request. This sub should shrink as each action
6416: # gets farmed out into a separat sub that is registered
6417: # with the dispatch hash.
6418: #
6419: # Parameters:
6420: # user_input - The request received from the client (lonc).
6421: # Returns:
6422: # true to keep processing, false if caller should exit.
6423: #
6424: sub process_request {
6425: my ($userinput) = @_; # Easier for now to break style than to
6426: # fix all the userinput -> user_input.
6427: my $wasenc = 0; # True if request was encrypted.
6428: # ------------------------------------------------------------ See if encrypted
1.322 albertel 6429: # for command
6430: # sethost:<server>
6431: # <command>:<args>
6432: # we just send it to the processor
6433: # for
6434: # sethost:<server>:<command>:<args>
6435: # we do the implict set host and then do the command
6436: if ($userinput =~ /^sethost:/) {
6437: (my $cmd,my $newid,$userinput) = split(':',$userinput,3);
6438: if (defined($userinput)) {
6439: &sethost("$cmd:$newid");
6440: } else {
6441: $userinput = "$cmd:$newid";
6442: }
6443: }
6444:
1.212 foxr 6445: if ($userinput =~ /^enc/) {
6446: $userinput = decipher($userinput);
6447: $wasenc=1;
6448: if(!$userinput) { # Cipher not defined.
1.251 foxr 6449: &Failure($client, "error: Encrypted data without negotated key\n");
1.212 foxr 6450: return 0;
6451: }
6452: }
6453: Debug("process_request: $userinput\n");
6454:
1.213 foxr 6455: #
6456: # The 'correct way' to add a command to lond is now to
6457: # write a sub to execute it and Add it to the command dispatch
6458: # hash via a call to register_handler.. The comments to that
6459: # sub should give you enough to go on to show how to do this
6460: # along with the examples that are building up as this code
6461: # is getting refactored. Until all branches of the
6462: # if/elseif monster below have been factored out into
6463: # separate procesor subs, if the dispatch hash is missing
6464: # the command keyword, we will fall through to the remainder
6465: # of the if/else chain below in order to keep this thing in
6466: # working order throughout the transmogrification.
6467:
6468: my ($command, $tail) = split(/:/, $userinput, 2);
6469: chomp($command);
6470: chomp($tail);
6471: $tail =~ s/(\r)//; # This helps people debugging with e.g. telnet.
1.214 foxr 6472: $command =~ s/(\r)//; # And this too for parameterless commands.
6473: if(!$tail) {
6474: $tail =""; # defined but blank.
6475: }
1.213 foxr 6476:
6477: &Debug("Command received: $command, encoded = $wasenc");
6478:
6479: if(defined $Dispatcher{$command}) {
6480:
6481: my $dispatch_info = $Dispatcher{$command};
6482: my $handler = $$dispatch_info[0];
6483: my $need_encode = $$dispatch_info[1];
6484: my $client_types = $$dispatch_info[2];
6485: Debug("Matched dispatch hash: mustencode: $need_encode "
6486: ."ClientType $client_types");
6487:
6488: # Validate the request:
6489:
6490: my $ok = 1;
6491: my $requesterprivs = 0;
6492: if(&isClient()) {
6493: $requesterprivs |= $CLIENT_OK;
6494: }
6495: if(&isManager()) {
6496: $requesterprivs |= $MANAGER_OK;
6497: }
6498: if($need_encode && (!$wasenc)) {
6499: Debug("Must encode but wasn't: $need_encode $wasenc");
6500: $ok = 0;
6501: }
6502: if(($client_types & $requesterprivs) == 0) {
6503: Debug("Client not privileged to do this operation");
6504: $ok = 0;
6505: }
6506:
6507: if($ok) {
6508: Debug("Dispatching to handler $command $tail");
6509: my $keep_going = &$handler($command, $tail, $client);
6510: return $keep_going;
6511: } else {
6512: Debug("Refusing to dispatch because client did not match requirements");
6513: Failure($client, "refused\n", $userinput);
6514: return 1;
6515: }
6516:
6517: }
6518:
1.262 foxr 6519: print $client "unknown_cmd\n";
1.212 foxr 6520: # -------------------------------------------------------------------- complete
6521: Debug("process_request - returning 1");
6522: return 1;
6523: }
1.207 foxr 6524: #
6525: # Decipher encoded traffic
6526: # Parameters:
6527: # input - Encoded data.
6528: # Returns:
6529: # Decoded data or undef if encryption key was not yet negotiated.
6530: # Implicit input:
6531: # cipher - This global holds the negotiated encryption key.
6532: #
1.211 albertel 6533: sub decipher {
1.207 foxr 6534: my ($input) = @_;
6535: my $output = '';
1.212 foxr 6536:
6537:
1.207 foxr 6538: if($cipher) {
6539: my($enc, $enclength, $encinput) = split(/:/, $input);
6540: for(my $encidx = 0; $encidx < length($encinput); $encidx += 16) {
6541: $output .=
6542: $cipher->decrypt(pack("H16", substr($encinput, $encidx, 16)));
6543: }
6544: return substr($output, 0, $enclength);
6545: } else {
6546: return undef;
6547: }
6548: }
6549:
6550: #
6551: # Register a command processor. This function is invoked to register a sub
6552: # to process a request. Once registered, the ProcessRequest sub can automatically
6553: # dispatch requests to an appropriate sub, and do the top level validity checking
6554: # as well:
6555: # - Is the keyword recognized.
6556: # - Is the proper client type attempting the request.
6557: # - Is the request encrypted if it has to be.
6558: # Parameters:
6559: # $request_name - Name of the request being registered.
6560: # This is the command request that will match
6561: # against the hash keywords to lookup the information
6562: # associated with the dispatch information.
6563: # $procedure - Reference to a sub to call to process the request.
6564: # All subs get called as follows:
6565: # Procedure($cmd, $tail, $replyfd, $key)
6566: # $cmd - the actual keyword that invoked us.
6567: # $tail - the tail of the request that invoked us.
6568: # $replyfd- File descriptor connected to the client
6569: # $must_encode - True if the request must be encoded to be good.
6570: # $client_ok - True if it's ok for a client to request this.
6571: # $manager_ok - True if it's ok for a manager to request this.
6572: # Side effects:
6573: # - On success, the Dispatcher hash has an entry added for the key $RequestName
6574: # - On failure, the program will die as it's a bad internal bug to try to
6575: # register a duplicate command handler.
6576: #
1.211 albertel 6577: sub register_handler {
1.212 foxr 6578: my ($request_name,$procedure,$must_encode, $client_ok,$manager_ok) = @_;
1.207 foxr 6579:
6580: # Don't allow duplication#
6581:
6582: if (defined $Dispatcher{$request_name}) {
6583: die "Attempting to define a duplicate request handler for $request_name\n";
6584: }
6585: # Build the client type mask:
6586:
6587: my $client_type_mask = 0;
6588: if($client_ok) {
6589: $client_type_mask |= $CLIENT_OK;
6590: }
6591: if($manager_ok) {
6592: $client_type_mask |= $MANAGER_OK;
6593: }
6594:
6595: # Enter the hash:
6596:
6597: my @entry = ($procedure, $must_encode, $client_type_mask);
6598:
6599: $Dispatcher{$request_name} = \@entry;
6600:
6601: }
6602:
6603:
6604: #------------------------------------------------------------------
6605:
6606:
6607:
6608:
1.141 foxr 6609: #
1.96 foxr 6610: # Convert an error return code from lcpasswd to a string value.
6611: #
6612: sub lcpasswdstrerror {
6613: my $ErrorCode = shift;
1.97 foxr 6614: if(($ErrorCode < 0) || ($ErrorCode > $lastpwderror)) {
1.96 foxr 6615: return "lcpasswd Unrecognized error return value ".$ErrorCode;
6616: } else {
1.98 foxr 6617: return $passwderrors[$ErrorCode];
1.96 foxr 6618: }
6619: }
6620:
1.23 harris41 6621: # grabs exception and records it to log before exiting
6622: sub catchexception {
1.27 albertel 6623: my ($error)=@_;
1.25 www 6624: $SIG{'QUIT'}='DEFAULT';
6625: $SIG{__DIE__}='DEFAULT';
1.165 albertel 6626: &status("Catching exception");
1.190 albertel 6627: &logthis("<font color='red'>CRITICAL: "
1.373 albertel 6628: ."ABNORMAL EXIT. Child $$ for server ".$perlvar{'lonHostID'}." died through "
1.27 albertel 6629: ."a crash with this error msg->[$error]</font>");
1.57 www 6630: &logthis('Famous last words: '.$status.' - '.$lastlog);
1.27 albertel 6631: if ($client) { print $client "error: $error\n"; }
1.59 www 6632: $server->close();
1.27 albertel 6633: die($error);
1.23 harris41 6634: }
1.63 www 6635: sub timeout {
1.165 albertel 6636: &status("Handling Timeout");
1.190 albertel 6637: &logthis("<font color='red'>CRITICAL: TIME OUT ".$$."</font>");
1.63 www 6638: &catchexception('Timeout');
6639: }
1.22 harris41 6640: # -------------------------------- Set signal handlers to record abnormal exits
6641:
1.226 foxr 6642:
1.22 harris41 6643: $SIG{'QUIT'}=\&catchexception;
6644: $SIG{__DIE__}=\&catchexception;
6645:
1.81 matthew 6646: # ---------------------------------- Read loncapa_apache.conf and loncapa.conf
1.95 harris41 6647: &status("Read loncapa.conf and loncapa_apache.conf");
6648: my $perlvarref=LONCAPA::Configuration::read_conf('loncapa.conf');
1.141 foxr 6649: %perlvar=%{$perlvarref};
1.80 harris41 6650: undef $perlvarref;
1.19 www 6651:
1.35 harris41 6652: # ----------------------------- Make sure this process is running from user=www
6653: my $wwwid=getpwnam('www');
6654: if ($wwwid!=$<) {
1.134 albertel 6655: my $emailto="$perlvar{'lonAdmEMail'},$perlvar{'lonSysEMail'}";
6656: my $subj="LON: $currenthostid User ID mismatch";
1.489.2.31 raeburn 6657: system("echo 'User ID mismatch. lond must be run as user www.' |".
6658: " mail -s '$subj' $emailto > /dev/null");
1.35 harris41 6659: exit 1;
6660: }
6661:
1.19 www 6662: # --------------------------------------------- Check if other instance running
6663:
6664: my $pidfile="$perlvar{'lonDaemons'}/logs/lond.pid";
6665:
6666: if (-e $pidfile) {
6667: my $lfh=IO::File->new("$pidfile");
6668: my $pide=<$lfh>;
6669: chomp($pide);
1.29 harris41 6670: if (kill 0 => $pide) { die "already running"; }
1.19 www 6671: }
1.1 albertel 6672:
6673: # ------------------------------------------------------------- Read hosts file
6674:
6675:
6676:
6677: # establish SERVER socket, bind and listen.
6678: $server = IO::Socket::INET->new(LocalPort => $perlvar{'londPort'},
6679: Type => SOCK_STREAM,
6680: Proto => 'tcp',
1.469 foxr 6681: ReuseAddr => 1,
1.1 albertel 6682: Listen => 10 )
1.29 harris41 6683: or die "making socket: $@\n";
1.1 albertel 6684:
6685: # --------------------------------------------------------- Do global variables
6686:
6687: # global variables
6688:
1.134 albertel 6689: my %children = (); # keys are current child process IDs
1.1 albertel 6690:
6691: sub REAPER { # takes care of dead children
6692: $SIG{CHLD} = \&REAPER;
1.165 albertel 6693: &status("Handling child death");
1.178 foxr 6694: my $pid;
6695: do {
6696: $pid = waitpid(-1,&WNOHANG());
6697: if (defined($children{$pid})) {
6698: &logthis("Child $pid died");
6699: delete($children{$pid});
1.183 albertel 6700: } elsif ($pid > 0) {
1.178 foxr 6701: &logthis("Unknown Child $pid died");
6702: }
6703: } while ( $pid > 0 );
6704: foreach my $child (keys(%children)) {
6705: $pid = waitpid($child,&WNOHANG());
6706: if ($pid > 0) {
6707: &logthis("Child $child - $pid looks like we missed it's death");
6708: delete($children{$pid});
6709: }
1.176 albertel 6710: }
1.165 albertel 6711: &status("Finished Handling child death");
1.1 albertel 6712: }
6713:
6714: sub HUNTSMAN { # signal handler for SIGINT
1.165 albertel 6715: &status("Killing children (INT)");
1.1 albertel 6716: local($SIG{CHLD}) = 'IGNORE'; # we're going to kill our children
6717: kill 'INT' => keys %children;
1.59 www 6718: &logthis("Free socket: ".shutdown($server,2)); # free up socket
1.1 albertel 6719: my $execdir=$perlvar{'lonDaemons'};
6720: unlink("$execdir/logs/lond.pid");
1.190 albertel 6721: &logthis("<font color='red'>CRITICAL: Shutting down</font>");
1.165 albertel 6722: &status("Done killing children");
1.1 albertel 6723: exit; # clean up with dignity
6724: }
6725:
6726: sub HUPSMAN { # signal handler for SIGHUP
6727: local($SIG{CHLD}) = 'IGNORE'; # we're going to kill our children
1.165 albertel 6728: &status("Killing children for restart (HUP)");
1.1 albertel 6729: kill 'INT' => keys %children;
1.59 www 6730: &logthis("Free socket: ".shutdown($server,2)); # free up socket
1.190 albertel 6731: &logthis("<font color='red'>CRITICAL: Restarting</font>");
1.134 albertel 6732: my $execdir=$perlvar{'lonDaemons'};
1.30 harris41 6733: unlink("$execdir/logs/lond.pid");
1.165 albertel 6734: &status("Restarting self (HUP)");
1.1 albertel 6735: exec("$execdir/lond"); # here we go again
6736: }
6737:
1.144 foxr 6738: #
1.148 foxr 6739: # Reload the Apache daemon's state.
1.150 foxr 6740: # This is done by invoking /home/httpd/perl/apachereload
6741: # a setuid perl script that can be root for us to do this job.
1.148 foxr 6742: #
6743: sub ReloadApache {
1.473 raeburn 6744: # --------------------------- Handle case of another apachereload process (locking)
1.474 raeburn 6745: if (&LONCAPA::try_to_lock('/tmp/lock_apachereload')) {
6746: my $execdir = $perlvar{'lonDaemons'};
6747: my $script = $execdir."/apachereload";
6748: system($script);
6749: unlink('/tmp/lock_apachereload'); # Remove the lock file.
6750: }
1.148 foxr 6751: }
6752:
6753: #
1.144 foxr 6754: # Called in response to a USR2 signal.
6755: # - Reread hosts.tab
6756: # - All children connected to hosts that were removed from hosts.tab
6757: # are killed via SIGINT
6758: # - All children connected to previously existing hosts are sent SIGUSR1
6759: # - Our internal hosts hash is updated to reflect the new contents of
6760: # hosts.tab causing connections from hosts added to hosts.tab to
6761: # now be honored.
6762: #
6763: sub UpdateHosts {
1.165 albertel 6764: &status("Reload hosts.tab");
1.147 foxr 6765: logthis('<font color="blue"> Updating connections </font>');
1.148 foxr 6766: #
6767: # The %children hash has the set of IP's we currently have children
6768: # on. These need to be matched against records in the hosts.tab
6769: # Any ip's no longer in the table get killed off they correspond to
6770: # either dropped or changed hosts. Note that the re-read of the table
6771: # will take care of new and changed hosts as connections come into being.
6772:
1.371 albertel 6773: &Apache::lonnet::reset_hosts_info();
1.148 foxr 6774:
1.368 albertel 6775: foreach my $child (keys(%children)) {
1.148 foxr 6776: my $childip = $children{$child};
1.374 albertel 6777: if ($childip ne '127.0.0.1'
6778: && !defined(&Apache::lonnet::get_hosts_from_ip($childip))) {
1.149 foxr 6779: logthis('<font color="blue"> UpdateHosts killing child '
6780: ." $child for ip $childip </font>");
1.148 foxr 6781: kill('INT', $child);
1.149 foxr 6782: } else {
6783: logthis('<font color="green"> keeping child for ip '
6784: ." $childip (pid=$child) </font>");
1.148 foxr 6785: }
6786: }
6787: ReloadApache;
1.165 albertel 6788: &status("Finished reloading hosts.tab");
1.144 foxr 6789: }
6790:
1.148 foxr 6791:
1.57 www 6792: sub checkchildren {
1.165 albertel 6793: &status("Checking on the children (sending signals)");
1.57 www 6794: &initnewstatus();
6795: &logstatus();
6796: &logthis('Going to check on the children');
1.134 albertel 6797: my $docdir=$perlvar{'lonDocRoot'};
1.61 harris41 6798: foreach (sort keys %children) {
1.221 albertel 6799: #sleep 1;
1.57 www 6800: unless (kill 'USR1' => $_) {
6801: &logthis ('Child '.$_.' is dead');
6802: &logstatus($$.' is dead');
1.221 albertel 6803: delete($children{$_});
1.57 www 6804: }
1.61 harris41 6805: }
1.63 www 6806: sleep 5;
1.212 foxr 6807: $SIG{ALRM} = sub { Debug("timeout");
6808: die "timeout"; };
1.113 albertel 6809: $SIG{__DIE__} = 'DEFAULT';
1.165 albertel 6810: &status("Checking on the children (waiting for reports)");
1.63 www 6811: foreach (sort keys %children) {
6812: unless (-e "$docdir/lon-status/londchld/$_.txt") {
1.113 albertel 6813: eval {
6814: alarm(300);
1.63 www 6815: &logthis('Child '.$_.' did not respond');
1.67 albertel 6816: kill 9 => $_;
1.131 albertel 6817: #$emailto="$perlvar{'lonAdmEMail'},$perlvar{'lonSysEMail'}";
6818: #$subj="LON: $currenthostid killed lond process $_";
6819: #my $result=`echo 'Killed lond process $_.' | mailto $emailto -s '$subj' > /dev/null`;
6820: #$execdir=$perlvar{'lonDaemons'};
6821: #$result=`/bin/cp $execdir/logs/lond.log $execdir/logs/lond.log.$_`;
1.221 albertel 6822: delete($children{$_});
1.113 albertel 6823: alarm(0);
6824: }
1.63 www 6825: }
6826: }
1.113 albertel 6827: $SIG{ALRM} = 'DEFAULT';
1.155 albertel 6828: $SIG{__DIE__} = \&catchexception;
1.165 albertel 6829: &status("Finished checking children");
1.221 albertel 6830: &logthis('Finished Checking children');
1.57 www 6831: }
6832:
1.1 albertel 6833: # --------------------------------------------------------------------- Logging
6834:
6835: sub logthis {
6836: my $message=shift;
6837: my $execdir=$perlvar{'lonDaemons'};
6838: my $fh=IO::File->new(">>$execdir/logs/lond.log");
6839: my $now=time;
6840: my $local=localtime($now);
1.58 www 6841: $lastlog=$local.': '.$message;
1.1 albertel 6842: print $fh "$local ($$): $message\n";
6843: }
6844:
1.77 foxr 6845: # ------------------------- Conditional log if $DEBUG true.
6846: sub Debug {
6847: my $message = shift;
6848: if($DEBUG) {
6849: &logthis($message);
6850: }
6851: }
1.161 foxr 6852:
6853: #
6854: # Sub to do replies to client.. this gives a hook for some
6855: # debug tracing too:
6856: # Parameters:
6857: # fd - File open on client.
6858: # reply - Text to send to client.
6859: # request - Original request from client.
6860: #
6861: sub Reply {
1.192 foxr 6862: my ($fd, $reply, $request) = @_;
1.387 albertel 6863: if (ref($reply)) {
6864: print $fd $$reply;
6865: print $fd "\n";
6866: if ($DEBUG) { Debug("Request was $request Reply was $$reply"); }
6867: } else {
6868: print $fd $reply;
6869: if ($DEBUG) { Debug("Request was $request Reply was $reply"); }
6870: }
1.212 foxr 6871: $Transactions++;
6872: }
6873:
6874:
6875: #
6876: # Sub to report a failure.
6877: # This function:
6878: # - Increments the failure statistic counters.
6879: # - Invokes Reply to send the error message to the client.
6880: # Parameters:
6881: # fd - File descriptor open on the client
6882: # reply - Reply text to emit.
6883: # request - The original request message (used by Reply
6884: # to debug if that's enabled.
6885: # Implicit outputs:
6886: # $Failures- The number of failures is incremented.
6887: # Reply (invoked here) sends a message to the
6888: # client:
6889: #
6890: sub Failure {
6891: my $fd = shift;
6892: my $reply = shift;
6893: my $request = shift;
6894:
6895: $Failures++;
6896: Reply($fd, $reply, $request); # That's simple eh?
1.161 foxr 6897: }
1.57 www 6898: # ------------------------------------------------------------------ Log status
6899:
6900: sub logstatus {
1.178 foxr 6901: &status("Doing logging");
6902: my $docdir=$perlvar{'lonDocRoot'};
6903: {
6904: my $fh=IO::File->new(">$docdir/lon-status/londchld/$$.txt");
1.200 matthew 6905: print $fh $status."\n".$lastlog."\n".time."\n$keymode";
1.178 foxr 6906: $fh->close();
6907: }
1.221 albertel 6908: &status("Finished $$.txt");
6909: {
6910: open(LOG,">>$docdir/lon-status/londstatus.txt");
6911: flock(LOG,LOCK_EX);
6912: print LOG $$."\t".$clientname."\t".$currenthostid."\t"
6913: .$status."\t".$lastlog."\t $keymode\n";
1.275 albertel 6914: flock(LOG,LOCK_UN);
1.221 albertel 6915: close(LOG);
6916: }
1.178 foxr 6917: &status("Finished logging");
1.57 www 6918: }
6919:
6920: sub initnewstatus {
6921: my $docdir=$perlvar{'lonDocRoot'};
6922: my $fh=IO::File->new(">$docdir/lon-status/londstatus.txt");
1.460 foxr 6923: my $now=time();
1.57 www 6924: my $local=localtime($now);
6925: print $fh "LOND status $local - parent $$\n\n";
1.64 www 6926: opendir(DIR,"$docdir/lon-status/londchld");
1.134 albertel 6927: while (my $filename=readdir(DIR)) {
1.64 www 6928: unlink("$docdir/lon-status/londchld/$filename");
6929: }
6930: closedir(DIR);
1.57 www 6931: }
6932:
6933: # -------------------------------------------------------------- Status setting
6934:
6935: sub status {
6936: my $what=shift;
6937: my $now=time;
6938: my $local=localtime($now);
1.178 foxr 6939: $status=$local.': '.$what;
6940: $0='lond: '.$what.' '.$local;
1.57 www 6941: }
1.11 www 6942:
1.13 www 6943: # -------------------------------------------------------------- Talk to lonsql
6944:
1.234 foxr 6945: sub sql_reply {
1.12 harris41 6946: my ($cmd)=@_;
1.234 foxr 6947: my $answer=&sub_sql_reply($cmd);
6948: if ($answer eq 'con_lost') { $answer=&sub_sql_reply($cmd); }
1.12 harris41 6949: return $answer;
6950: }
6951:
1.234 foxr 6952: sub sub_sql_reply {
1.12 harris41 6953: my ($cmd)=@_;
6954: my $unixsock="mysqlsock";
6955: my $peerfile="$perlvar{'lonSockDir'}/$unixsock";
6956: my $sclient=IO::Socket::UNIX->new(Peer =>"$peerfile",
6957: Type => SOCK_STREAM,
6958: Timeout => 10)
6959: or return "con_lost";
1.319 www 6960: print $sclient "$cmd:$currentdomainid\n";
1.12 harris41 6961: my $answer=<$sclient>;
6962: chomp($answer);
6963: if (!$answer) { $answer="con_lost"; }
6964: return $answer;
6965: }
6966:
1.1 albertel 6967: # --------------------------------------- Is this the home server of an author?
1.11 www 6968:
1.1 albertel 6969: sub ishome {
6970: my $author=shift;
6971: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
6972: my ($udom,$uname)=split(/\//,$author);
6973: my $proname=propath($udom,$uname);
6974: if (-e $proname) {
6975: return 'owner';
6976: } else {
6977: return 'not_owner';
6978: }
6979: }
6980:
6981: # ======================================================= Continue main program
6982: # ---------------------------------------------------- Fork once and dissociate
6983:
1.134 albertel 6984: my $fpid=fork;
1.1 albertel 6985: exit if $fpid;
1.29 harris41 6986: die "Couldn't fork: $!" unless defined ($fpid);
1.1 albertel 6987:
1.29 harris41 6988: POSIX::setsid() or die "Can't start new session: $!";
1.1 albertel 6989:
6990: # ------------------------------------------------------- Write our PID on disk
6991:
1.134 albertel 6992: my $execdir=$perlvar{'lonDaemons'};
1.1 albertel 6993: open (PIDSAVE,">$execdir/logs/lond.pid");
6994: print PIDSAVE "$$\n";
6995: close(PIDSAVE);
1.190 albertel 6996: &logthis("<font color='red'>CRITICAL: ---------- Starting ----------</font>");
1.57 www 6997: &status('Starting');
1.1 albertel 6998:
1.106 foxr 6999:
1.1 albertel 7000:
7001: # ----------------------------------------------------- Install signal handlers
7002:
1.57 www 7003:
1.1 albertel 7004: $SIG{CHLD} = \&REAPER;
7005: $SIG{INT} = $SIG{TERM} = \&HUNTSMAN;
7006: $SIG{HUP} = \&HUPSMAN;
1.57 www 7007: $SIG{USR1} = \&checkchildren;
1.144 foxr 7008: $SIG{USR2} = \&UpdateHosts;
1.106 foxr 7009:
1.148 foxr 7010: # Read the host hashes:
1.368 albertel 7011: &Apache::lonnet::load_hosts_tab();
1.447 raeburn 7012: my %iphost = &Apache::lonnet::get_iphost(1);
1.106 foxr 7013:
1.480 raeburn 7014: $dist=`$perlvar{'lonDaemons'}/distprobe`;
1.286 albertel 7015:
1.471 raeburn 7016: my $arch = `uname -i`;
1.475 raeburn 7017: chomp($arch);
1.471 raeburn 7018: if ($arch eq 'unknown') {
7019: $arch = `uname -m`;
1.475 raeburn 7020: chomp($arch);
1.471 raeburn 7021: }
7022:
1.106 foxr 7023: # --------------------------------------------------------------
7024: # Accept connections. When a connection comes in, it is validated
7025: # and if good, a child process is created to process transactions
7026: # along the connection.
7027:
1.1 albertel 7028: while (1) {
1.165 albertel 7029: &status('Starting accept');
1.106 foxr 7030: $client = $server->accept() or next;
1.165 albertel 7031: &status('Accepted '.$client.' off to spawn');
1.386 albertel 7032: make_new_child($client);
1.165 albertel 7033: &status('Finished spawning');
1.1 albertel 7034: }
7035:
1.212 foxr 7036: sub make_new_child {
7037: my $pid;
7038: # my $cipher; # Now global
7039: my $sigset;
1.178 foxr 7040:
1.212 foxr 7041: $client = shift;
7042: &status('Starting new child '.$client);
7043: &logthis('<font color="green"> Attempting to start child ('.$client.
7044: ")</font>");
7045: # block signal for fork
7046: $sigset = POSIX::SigSet->new(SIGINT);
7047: sigprocmask(SIG_BLOCK, $sigset)
7048: or die "Can't block SIGINT for fork: $!\n";
1.178 foxr 7049:
1.212 foxr 7050: die "fork: $!" unless defined ($pid = fork);
1.178 foxr 7051:
1.212 foxr 7052: $client->sockopt(SO_KEEPALIVE, 1); # Enable monitoring of
7053: # connection liveness.
1.178 foxr 7054:
1.212 foxr 7055: #
7056: # Figure out who we're talking to so we can record the peer in
7057: # the pid hash.
7058: #
7059: my $caller = getpeername($client);
7060: my ($port,$iaddr);
7061: if (defined($caller) && length($caller) > 0) {
7062: ($port,$iaddr)=unpack_sockaddr_in($caller);
7063: } else {
7064: &logthis("Unable to determine who caller was, getpeername returned nothing");
7065: }
7066: if (defined($iaddr)) {
7067: $clientip = inet_ntoa($iaddr);
7068: Debug("Connected with $clientip");
7069: } else {
7070: &logthis("Unable to determine clientip");
7071: $clientip='Unavailable';
7072: }
7073:
7074: if ($pid) {
7075: # Parent records the child's birth and returns.
7076: sigprocmask(SIG_UNBLOCK, $sigset)
7077: or die "Can't unblock SIGINT for fork: $!\n";
7078: $children{$pid} = $clientip;
7079: &status('Started child '.$pid);
1.462 foxr 7080: close($client);
1.212 foxr 7081: return;
7082: } else {
7083: # Child can *not* return from this subroutine.
7084: $SIG{INT} = 'DEFAULT'; # make SIGINT kill us as it did before
7085: $SIG{CHLD} = 'DEFAULT'; #make this default so that pwauth returns
7086: #don't get intercepted
7087: $SIG{USR1}= \&logstatus;
7088: $SIG{ALRM}= \&timeout;
1.468 foxr 7089: #
7090: # Block sigpipe as it gets thrownon socket disconnect and we want to
7091: # deal with that as a read faiure instead.
7092: #
7093: my $blockset = POSIX::SigSet->new(SIGPIPE);
7094: sigprocmask(SIG_BLOCK, $blockset);
7095:
1.212 foxr 7096: $lastlog='Forked ';
7097: $status='Forked';
1.178 foxr 7098:
1.212 foxr 7099: # unblock signals
7100: sigprocmask(SIG_UNBLOCK, $sigset)
7101: or die "Can't unblock SIGINT for fork: $!\n";
1.178 foxr 7102:
1.212 foxr 7103: # my $tmpsnum=0; # Now global
7104: #---------------------------------------------------- kerberos 5 initialization
7105: &Authen::Krb5::init_context();
1.489.2.16 raeburn 7106:
7107: my $no_ets;
1.489.2.31 raeburn 7108: if ($dist =~ /^(?:centos|rhes|scientific|oracle)(\d+)$/) {
1.489.2.16 raeburn 7109: if ($1 >= 7) {
7110: $no_ets = 1;
7111: }
7112: } elsif ($dist =~ /^suse(\d+\.\d+)$/) {
7113: if (($1 eq '9.3') || ($1 >= 12.2)) {
7114: $no_ets = 1;
7115: }
1.489.2.17 raeburn 7116: } elsif ($dist =~ /^sles(\d+)$/) {
7117: if ($1 > 11) {
7118: $no_ets = 1;
7119: }
1.489.2.16 raeburn 7120: } elsif ($dist =~ /^fedora(\d+)$/) {
7121: if ($1 < 7) {
7122: $no_ets = 1;
7123: }
7124: }
7125: unless ($no_ets) {
7126: &Authen::Krb5::init_ets();
7127: }
1.209 albertel 7128:
1.212 foxr 7129: &status('Accepted connection');
7130: # =============================================================================
7131: # do something with the connection
7132: # -----------------------------------------------------------------------------
7133: # see if we know client and 'check' for spoof IP by ineffective challenge
1.178 foxr 7134:
1.278 albertel 7135: my $outsideip=$clientip;
7136: if ($clientip eq '127.0.0.1') {
1.368 albertel 7137: $outsideip=&Apache::lonnet::get_host_ip($perlvar{'lonHostID'});
1.278 albertel 7138: }
1.412 foxr 7139: &ReadManagerTable();
1.368 albertel 7140: my $clientrec=defined(&Apache::lonnet::get_hosts_from_ip($outsideip));
1.278 albertel 7141: my $ismanager=($managers{$outsideip} ne undef);
1.432 raeburn 7142: $clientname = "[unknown]";
1.212 foxr 7143: if($clientrec) { # Establish client type.
7144: $ConnectionType = "client";
1.368 albertel 7145: $clientname = (&Apache::lonnet::get_hosts_from_ip($outsideip))[-1];
1.212 foxr 7146: if($ismanager) {
7147: $ConnectionType = "both";
7148: }
7149: } else {
7150: $ConnectionType = "manager";
1.278 albertel 7151: $clientname = $managers{$outsideip};
1.212 foxr 7152: }
7153: my $clientok;
1.178 foxr 7154:
1.212 foxr 7155: if ($clientrec || $ismanager) {
7156: &status("Waiting for init from $clientip $clientname");
7157: &logthis('<font color="yellow">INFO: Connection, '.
7158: $clientip.
7159: " ($clientname) connection type = $ConnectionType </font>" );
7160: &status("Connecting $clientip ($clientname))");
7161: my $remotereq=<$client>;
7162: chomp($remotereq);
7163: Debug("Got init: $remotereq");
1.337 albertel 7164:
1.212 foxr 7165: if ($remotereq =~ /^init/) {
7166: &sethost("sethost:$perlvar{'lonHostID'}");
7167: #
7168: # If the remote is attempting a local init... give that a try:
7169: #
1.432 raeburn 7170: (my $i, my $inittype, $clientversion) = split(/:/, $remotereq);
1.489.2.4 raeburn 7171: # For LON-CAPA 2.9, the client session will have sent its LON-CAPA
7172: # version when initiating the connection. For LON-CAPA 2.8 and older,
7173: # the version is retrieved from the global %loncaparevs in lonnet.pm.
7174: # $clientversion contains path to keyfile if $inittype eq 'local'
7175: # it's overridden below in this case
7176: $clientversion ||= $Apache::lonnet::loncaparevs{$clientname};
1.209 albertel 7177:
1.212 foxr 7178: # If the connection type is ssl, but I didn't get my
7179: # certificate files yet, then I'll drop back to
7180: # insecure (if allowed).
7181:
7182: if($inittype eq "ssl") {
7183: my ($ca, $cert) = lonssl::CertificateFile;
7184: my $kfile = lonssl::KeyFile;
7185: if((!$ca) ||
7186: (!$cert) ||
7187: (!$kfile)) {
7188: $inittype = ""; # This forces insecure attempt.
7189: &logthis("<font color=\"blue\"> Certificates not "
7190: ."installed -- trying insecure auth</font>");
1.224 foxr 7191: } else { # SSL certificates are in place so
1.212 foxr 7192: } # Leave the inittype alone.
7193: }
7194:
7195: if($inittype eq "local") {
1.432 raeburn 7196: $clientversion = $perlvar{'lonVersion'};
1.212 foxr 7197: my $key = LocalConnection($client, $remotereq);
7198: if($key) {
7199: Debug("Got local key $key");
7200: $clientok = 1;
7201: my $cipherkey = pack("H32", $key);
7202: $cipher = new IDEA($cipherkey);
7203: print $client "ok:local\n";
1.442 www 7204: &logthis('<font color="green">'
1.212 foxr 7205: . "Successful local authentication </font>");
7206: $keymode = "local"
1.178 foxr 7207: } else {
1.212 foxr 7208: Debug("Failed to get local key");
7209: $clientok = 0;
7210: shutdown($client, 3);
7211: close $client;
1.178 foxr 7212: }
1.212 foxr 7213: } elsif ($inittype eq "ssl") {
7214: my $key = SSLConnection($client);
7215: if ($key) {
7216: $clientok = 1;
7217: my $cipherkey = pack("H32", $key);
7218: $cipher = new IDEA($cipherkey);
7219: &logthis('<font color="green">'
7220: ."Successfull ssl authentication with $clientname </font>");
7221: $keymode = "ssl";
7222:
1.178 foxr 7223: } else {
1.212 foxr 7224: $clientok = 0;
7225: close $client;
1.178 foxr 7226: }
1.212 foxr 7227:
7228: } else {
7229: my $ok = InsecureConnection($client);
7230: if($ok) {
7231: $clientok = 1;
7232: &logthis('<font color="green">'
7233: ."Successful insecure authentication with $clientname </font>");
7234: print $client "ok\n";
7235: $keymode = "insecure";
1.178 foxr 7236: } else {
1.212 foxr 7237: &logthis('<font color="yellow">'
7238: ."Attempted insecure connection disallowed </font>");
7239: close $client;
7240: $clientok = 0;
1.178 foxr 7241: }
7242: }
1.212 foxr 7243: } else {
7244: &logthis(
7245: "<font color='blue'>WARNING: "
7246: ."$clientip failed to initialize: >$remotereq< </font>");
7247: &status('No init '.$clientip);
7248: }
7249: } else {
7250: &logthis(
7251: "<font color='blue'>WARNING: Unknown client $clientip</font>");
7252: &status('Hung up on '.$clientip);
7253: }
7254:
7255: if ($clientok) {
7256: # ---------------- New known client connecting, could mean machine online again
1.368 albertel 7257: if (&Apache::lonnet::get_host_ip($currenthostid) ne $clientip
1.367 albertel 7258: && $clientip ne '127.0.0.1') {
1.375 albertel 7259: &Apache::lonnet::reconlonc($clientname);
1.212 foxr 7260: }
7261: &logthis("<font color='green'>Established connection: $clientname</font>");
7262: &status('Will listen to '.$clientname);
7263: # ------------------------------------------------------------ Process requests
7264: my $keep_going = 1;
7265: my $user_input;
1.448 raeburn 7266: my $clienthost = &Apache::lonnet::hostname($clientname);
7267: my $clientserverhomeID = &Apache::lonnet::get_server_homeID($clienthost);
7268: $clienthomedom = &Apache::lonnet::host_domain($clientserverhomeID);
1.212 foxr 7269: while(($user_input = get_request) && $keep_going) {
7270: alarm(120);
7271: Debug("Main: Got $user_input\n");
7272: $keep_going = &process_request($user_input);
1.178 foxr 7273: alarm(0);
1.212 foxr 7274: &status('Listening to '.$clientname." ($keymode)");
1.161 foxr 7275: }
1.212 foxr 7276:
1.59 www 7277: # --------------------------------------------- client unknown or fishy, refuse
1.212 foxr 7278: } else {
1.161 foxr 7279: print $client "refused\n";
7280: $client->close();
1.190 albertel 7281: &logthis("<font color='blue'>WARNING: "
1.161 foxr 7282: ."Rejected client $clientip, closing connection</font>");
7283: }
1.212 foxr 7284: }
1.161 foxr 7285:
1.1 albertel 7286: # =============================================================================
1.161 foxr 7287:
1.190 albertel 7288: &logthis("<font color='red'>CRITICAL: "
1.161 foxr 7289: ."Disconnect from $clientip ($clientname)</font>");
7290:
7291:
7292: # this exit is VERY important, otherwise the child will become
7293: # a producer of more and more children, forking yourself into
7294: # process death.
7295: exit;
1.106 foxr 7296:
1.78 foxr 7297: }
1.261 foxr 7298: #
7299: # Determine if a user is an author for the indicated domain.
7300: #
7301: # Parameters:
7302: # domain - domain to check in .
7303: # user - Name of user to check.
7304: #
7305: # Return:
7306: # 1 - User is an author for domain.
7307: # 0 - User is not an author for domain.
7308: sub is_author {
7309: my ($domain, $user) = @_;
7310:
7311: &Debug("is_author: $user @ $domain");
7312:
7313: my $hashref = &tie_user_hash($domain, $user, "roles",
7314: &GDBM_READER());
7315:
7316: # Author role should show up as a key /domain/_au
1.78 foxr 7317:
1.321 albertel 7318: my $value;
1.487 foxr 7319: if ($hashref) {
1.78 foxr 7320:
1.487 foxr 7321: my $key = "/$domain/_au";
7322: if (defined($hashref)) {
7323: $value = $hashref->{$key};
7324: if(!untie_user_hash($hashref)) {
7325: return 'error: ' . ($!+0)." untie (GDBM) Failed";
7326: }
7327: }
7328:
7329: if(defined($value)) {
7330: &Debug("$user @ $domain is an author");
7331: }
7332: } else {
7333: return 'error: '.($!+0)." tie (GDBM) Failed";
1.261 foxr 7334: }
7335:
7336: return defined($value);
7337: }
1.78 foxr 7338: #
7339: # Checks to see if the input roleput request was to set
1.482 www 7340: # an author role. If so, creates construction space
1.78 foxr 7341: # Parameters:
7342: # request - The request sent to the rolesput subchunk.
7343: # We're looking for /domain/_au
7344: # domain - The domain in which the user is having roles doctored.
7345: # user - Name of the user for which the role is being put.
7346: # authtype - The authentication type associated with the user.
7347: #
1.289 albertel 7348: sub manage_permissions {
1.192 foxr 7349: my ($request, $domain, $user, $authtype) = @_;
1.78 foxr 7350: # See if the request is of the form /$domain/_au
1.289 albertel 7351: if($request =~ /^(\/\Q$domain\E\/_au)$/) { # It's an author rolesput...
1.484 raeburn 7352: my $path=$perlvar{'lonDocRoot'}."/priv/$domain";
1.482 www 7353: unless (-e $path) {
7354: mkdir($path);
7355: }
7356: unless (-e $path.'/'.$user) {
7357: mkdir($path.'/'.$user);
7358: }
1.78 foxr 7359: }
7360: }
1.222 foxr 7361:
7362:
7363: #
7364: # Return the full path of a user password file, whether it exists or not.
7365: # Parameters:
7366: # domain - Domain in which the password file lives.
7367: # user - name of the user.
7368: # Returns:
7369: # Full passwd path:
7370: #
7371: sub password_path {
7372: my ($domain, $user) = @_;
1.264 albertel 7373: return &propath($domain, $user).'/passwd';
1.222 foxr 7374: }
7375:
7376: # Password Filename
7377: # Returns the path to a passwd file given domain and user... only if
7378: # it exists.
7379: # Parameters:
7380: # domain - Domain in which to search.
7381: # user - username.
7382: # Returns:
7383: # - If the password file exists returns its path.
7384: # - If the password file does not exist, returns undefined.
7385: #
7386: sub password_filename {
7387: my ($domain, $user) = @_;
7388:
7389: Debug ("PasswordFilename called: dom = $domain user = $user");
7390:
7391: my $path = &password_path($domain, $user);
7392: Debug("PasswordFilename got path: $path");
7393: if(-e $path) {
7394: return $path;
7395: } else {
7396: return undef;
7397: }
7398: }
7399:
7400: #
7401: # Rewrite the contents of the user's passwd file.
7402: # Parameters:
7403: # domain - domain of the user.
7404: # name - User's name.
7405: # contents - New contents of the file.
1.489.2.26 raeburn 7406: # saveold - (optional). If true save old file in a passwd.bak file.
1.222 foxr 7407: # Returns:
7408: # 0 - Failed.
7409: # 1 - Success.
7410: #
7411: sub rewrite_password_file {
1.489.2.26 raeburn 7412: my ($domain, $user, $contents, $saveold) = @_;
1.222 foxr 7413:
7414: my $file = &password_filename($domain, $user);
7415: if (defined $file) {
1.489.2.26 raeburn 7416: if ($saveold) {
7417: my $bakfile = $file.'.bak';
7418: if (CopyFile($file,$bakfile)) {
7419: chmod(0400,$bakfile);
7420: &logthis("Old password saved in passwd.bak for internally authenticated user: $user:$domain");
7421: } else {
7422: &logthis("Failed to save old password in passwd.bak for internally authenticated user: $user:$domain");
7423: }
7424: }
1.222 foxr 7425: my $pf = IO::File->new(">$file");
7426: if($pf) {
7427: print $pf "$contents\n";
7428: return 1;
7429: } else {
7430: return 0;
7431: }
7432: } else {
7433: return 0;
7434: }
7435:
7436: }
7437:
1.78 foxr 7438: #
1.222 foxr 7439: # get_auth_type - Determines the authorization type of a user in a domain.
1.78 foxr 7440:
7441: # Returns the authorization type or nouser if there is no such user.
7442: #
1.436 raeburn 7443: sub get_auth_type {
1.192 foxr 7444: my ($domain, $user) = @_;
1.78 foxr 7445:
1.222 foxr 7446: Debug("get_auth_type( $domain, $user ) \n");
1.78 foxr 7447: my $proname = &propath($domain, $user);
7448: my $passwdfile = "$proname/passwd";
7449: if( -e $passwdfile ) {
7450: my $pf = IO::File->new($passwdfile);
7451: my $realpassword = <$pf>;
7452: chomp($realpassword);
1.79 foxr 7453: Debug("Password info = $realpassword\n");
1.78 foxr 7454: my ($authtype, $contentpwd) = split(/:/, $realpassword);
1.79 foxr 7455: Debug("Authtype = $authtype, content = $contentpwd\n");
1.259 raeburn 7456: return "$authtype:$contentpwd";
1.224 foxr 7457: } else {
1.79 foxr 7458: Debug("Returning nouser");
1.78 foxr 7459: return "nouser";
7460: }
1.1 albertel 7461: }
7462:
1.220 foxr 7463: #
7464: # Validate a user given their domain, name and password. This utility
7465: # function is used by both AuthenticateHandler and ChangePasswordHandler
7466: # to validate the login credentials of a user.
7467: # Parameters:
7468: # $domain - The domain being logged into (this is required due to
7469: # the capability for multihomed systems.
7470: # $user - The name of the user being validated.
7471: # $password - The user's propoposed password.
7472: #
7473: # Returns:
7474: # 1 - The domain,user,pasword triplet corresponds to a valid
7475: # user.
7476: # 0 - The domain,user,password triplet is not a valid user.
7477: #
7478: sub validate_user {
1.396 raeburn 7479: my ($domain, $user, $password, $checkdefauth) = @_;
1.220 foxr 7480:
7481: # Why negative ~pi you may well ask? Well this function is about
7482: # authentication, and therefore very important to get right.
7483: # I've initialized the flag that determines whether or not I've
7484: # validated correctly to a value it's not supposed to get.
7485: # At the end of this function. I'll ensure that it's not still that
7486: # value so we don't just wind up returning some accidental value
7487: # as a result of executing an unforseen code path that
1.249 foxr 7488: # did not set $validated. At the end of valid execution paths,
7489: # validated shoule be 1 for success or 0 for failuer.
1.220 foxr 7490:
7491: my $validated = -3.14159;
7492:
7493: # How we authenticate is determined by the type of authentication
7494: # the user has been assigned. If the authentication type is
7495: # "nouser", the user does not exist so we will return 0.
7496:
1.222 foxr 7497: my $contents = &get_auth_type($domain, $user);
1.220 foxr 7498: my ($howpwd, $contentpwd) = split(/:/, $contents);
7499:
7500: my $null = pack("C",0); # Used by kerberos auth types.
7501:
1.395 raeburn 7502: if ($howpwd eq 'nouser') {
1.396 raeburn 7503: if ($checkdefauth) {
7504: my %domdefaults = &Apache::lonnet::get_domain_defaults($domain);
7505: if ($domdefaults{'auth_def'} eq 'localauth') {
7506: $howpwd = $domdefaults{'auth_def'};
7507: $contentpwd = $domdefaults{'auth_arg_def'};
7508: } elsif ((($domdefaults{'auth_def'} eq 'krb4') ||
7509: ($domdefaults{'auth_def'} eq 'krb5')) &&
7510: ($domdefaults{'auth_arg_def'} ne '')) {
7511: $howpwd = $domdefaults{'auth_def'};
7512: $contentpwd = $domdefaults{'auth_arg_def'};
7513: }
1.395 raeburn 7514: }
1.489.2.26 raeburn 7515: }
1.220 foxr 7516: if ($howpwd ne 'nouser') {
7517: if($howpwd eq "internal") { # Encrypted is in local password file.
1.489.2.21 raeburn 7518: if (length($contentpwd) == 13) {
7519: $validated = (crypt($password,$contentpwd) eq $contentpwd);
7520: if ($validated) {
1.489.2.26 raeburn 7521: my %domdefaults = &Apache::lonnet::get_domain_defaults($domain);
7522: if ($domdefaults{'intauth_switch'}) {
7523: my $ncpass = &hash_passwd($domain,$password);
7524: my $saveold;
7525: if ($domdefaults{'intauth_switch'} == 2) {
7526: $saveold = 1;
7527: }
7528: if (&rewrite_password_file($domain,$user,"$howpwd:$ncpass",$saveold)) {
7529: &update_passwd_history($user,$domain,$howpwd,'conversion');
7530: &logthis("Validated password hashed with bcrypt for $user:$domain");
7531: }
1.489.2.21 raeburn 7532: }
7533: }
7534: } else {
1.489.2.26 raeburn 7535: $validated = &check_internal_passwd($password,$contentpwd,$domain,$user);
1.489.2.21 raeburn 7536: }
1.220 foxr 7537: }
7538: elsif ($howpwd eq "unix") { # User is a normal unix user.
7539: $contentpwd = (getpwnam($user))[1];
7540: if($contentpwd) {
7541: if($contentpwd eq 'x') { # Shadow password file...
7542: my $pwauth_path = "/usr/local/sbin/pwauth";
7543: open PWAUTH, "|$pwauth_path" or
7544: die "Cannot invoke authentication";
7545: print PWAUTH "$user\n$password\n";
7546: close PWAUTH;
7547: $validated = ! $?;
7548:
7549: } else { # Passwords in /etc/passwd.
7550: $validated = (crypt($password,
7551: $contentpwd) eq $contentpwd);
7552: }
7553: } else {
7554: $validated = 0;
7555: }
1.439 raeburn 7556: } elsif ($howpwd eq "krb4") { # user is in kerberos 4 auth. domain.
7557: my $checkwithkrb5 = 0;
7558: if ($dist =~/^fedora(\d+)$/) {
7559: if ($1 > 11) {
7560: $checkwithkrb5 = 1;
7561: }
7562: } elsif ($dist =~ /^suse([\d.]+)$/) {
7563: if ($1 > 11.1) {
7564: $checkwithkrb5 = 1;
7565: }
7566: }
7567: if ($checkwithkrb5) {
7568: $validated = &krb5_authen($password,$null,$user,$contentpwd);
7569: } else {
7570: $validated = &krb4_authen($password,$null,$user,$contentpwd);
7571: }
1.224 foxr 7572: } elsif ($howpwd eq "krb5") { # User is in kerberos 5 auth. domain.
1.439 raeburn 7573: $validated = &krb5_authen($password,$null,$user,$contentpwd);
1.224 foxr 7574: } elsif ($howpwd eq "localauth") {
1.220 foxr 7575: # Authenticate via installation specific authentcation method:
7576: $validated = &localauth::localauth($user,
7577: $password,
1.353 albertel 7578: $contentpwd,
7579: $domain);
1.358 albertel 7580: if ($validated < 0) {
1.357 albertel 7581: &logthis("localauth for $contentpwd $user:$domain returned a $validated");
7582: $validated = 0;
7583: }
1.224 foxr 7584: } else { # Unrecognized auth is also bad.
1.220 foxr 7585: $validated = 0;
7586: }
7587: } else {
7588: $validated = 0;
7589: }
7590: #
7591: # $validated has the correct stat of the authentication:
7592: #
7593:
7594: unless ($validated != -3.14159) {
1.249 foxr 7595: # I >really really< want to know if this happens.
7596: # since it indicates that user authentication is badly
7597: # broken in some code path.
7598: #
7599: die "ValidateUser - failed to set the value of validated $domain, $user $password";
1.220 foxr 7600: }
7601: return $validated;
7602: }
7603:
1.489.2.21 raeburn 7604: sub check_internal_passwd {
1.489.2.26 raeburn 7605: my ($plainpass,$stored,$domain,$user) = @_;
1.489.2.21 raeburn 7606: my (undef,$method,@rest) = split(/!/,$stored);
1.489.2.26 raeburn 7607: if ($method eq 'bcrypt') {
1.489.2.21 raeburn 7608: my $result = &hash_passwd($domain,$plainpass,@rest);
7609: if ($result ne $stored) {
7610: return 0;
7611: }
1.489.2.26 raeburn 7612: my %domdefaults = &Apache::lonnet::get_domain_defaults($domain);
7613: if ($domdefaults{'intauth_check'}) {
7614: # Upgrade to a larger number of rounds if necessary
7615: my $defaultcost = $domdefaults{'intauth_cost'};
7616: if (($defaultcost eq '') || ($defaultcost =~ /D/)) {
7617: $defaultcost = 10;
7618: }
7619: if (int($rest[0])<int($defaultcost)) {
7620: if ($domdefaults{'intauth_check'} == 1) {
7621: my $ncpass = &hash_passwd($domain,$plainpass);
7622: if (&rewrite_password_file($domain,$user,"internal:$ncpass")) {
7623: &update_passwd_history($user,$domain,'internal','update cost');
7624: &logthis("Validated password hashed with bcrypt for $user:$domain");
7625: }
7626: return 1;
7627: } elsif ($domdefaults{'intauth_check'} == 2) {
7628: return 0;
7629: }
7630: }
7631: } else {
7632: return 1;
1.489.2.21 raeburn 7633: }
7634: }
7635: return 0;
7636: }
7637:
7638: sub get_last_authchg {
7639: my ($domain,$user) = @_;
7640: my $lastmod;
7641: my $logname = &propath($domain,$user).'/passwd.log';
7642: if (-e "$logname") {
7643: $lastmod = (stat("$logname"))[9];
7644: }
7645: return $lastmod;
7646: }
7647:
1.439 raeburn 7648: sub krb4_authen {
7649: my ($password,$null,$user,$contentpwd) = @_;
7650: my $validated = 0;
7651: if (!($password =~ /$null/) ) { # Null password not allowed.
7652: eval {
7653: require Authen::Krb4;
7654: };
7655: if (!$@) {
7656: my $k4error = &Authen::Krb4::get_pw_in_tkt($user,
7657: "",
7658: $contentpwd,,
7659: 'krbtgt',
7660: $contentpwd,
7661: 1,
7662: $password);
7663: if(!$k4error) {
7664: $validated = 1;
7665: } else {
7666: $validated = 0;
7667: &logthis('krb4: '.$user.', '.$contentpwd.', '.
7668: &Authen::Krb4::get_err_txt($Authen::Krb4::error));
7669: }
7670: } else {
7671: $validated = krb5_authen($password,$null,$user,$contentpwd);
7672: }
7673: }
7674: return $validated;
7675: }
7676:
7677: sub krb5_authen {
7678: my ($password,$null,$user,$contentpwd) = @_;
7679: my $validated = 0;
7680: if(!($password =~ /$null/)) { # Null password not allowed.
7681: my $krbclient = &Authen::Krb5::parse_name($user.'@'
7682: .$contentpwd);
7683: my $krbservice = "krbtgt/".$contentpwd."\@".$contentpwd;
7684: my $krbserver = &Authen::Krb5::parse_name($krbservice);
7685: my $credentials= &Authen::Krb5::cc_default();
7686: $credentials->initialize(&Authen::Krb5::parse_name($user.'@'
7687: .$contentpwd));
7688: my $krbreturn;
7689: if (exists(&Authen::Krb5::get_init_creds_password)) {
7690: $krbreturn =
7691: &Authen::Krb5::get_init_creds_password($krbclient,$password,
7692: $krbservice);
7693: $validated = (ref($krbreturn) eq 'Authen::Krb5::Creds');
7694: } else {
7695: $krbreturn =
7696: &Authen::Krb5::get_in_tkt_with_password($krbclient,$krbserver,
7697: $password,$credentials);
7698: $validated = ($krbreturn == 1);
7699: }
7700: if (!$validated) {
7701: &logthis('krb5: '.$user.', '.$contentpwd.', '.
7702: &Authen::Krb5::error());
7703: }
7704: }
7705: return $validated;
7706: }
1.220 foxr 7707:
1.84 albertel 7708: sub addline {
7709: my ($fname,$hostid,$ip,$newline)=@_;
7710: my $contents;
7711: my $found=0;
1.355 albertel 7712: my $expr='^'.quotemeta($hostid).':'.quotemeta($ip).':';
1.134 albertel 7713: my $sh;
1.84 albertel 7714: if ($sh=IO::File->new("$fname.subscription")) {
7715: while (my $subline=<$sh>) {
7716: if ($subline !~ /$expr/) {$contents.= $subline;} else {$found=1;}
7717: }
7718: $sh->close();
7719: }
7720: $sh=IO::File->new(">$fname.subscription");
7721: if ($contents) { print $sh $contents; }
7722: if ($newline) { print $sh $newline; }
7723: $sh->close();
7724: return $found;
1.86 www 7725: }
7726:
1.234 foxr 7727: sub get_chat {
1.324 raeburn 7728: my ($cdom,$cname,$udom,$uname,$group)=@_;
1.310 albertel 7729:
1.87 www 7730: my @entries=();
1.324 raeburn 7731: my $namespace = 'nohist_chatroom';
7732: my $namespace_inroom = 'nohist_inchatroom';
1.335 albertel 7733: if ($group ne '') {
1.324 raeburn 7734: $namespace .= '_'.$group;
7735: $namespace_inroom .= '_'.$group;
7736: }
7737: my $hashref = &tie_user_hash($cdom, $cname, $namespace,
1.310 albertel 7738: &GDBM_READER());
7739: if ($hashref) {
7740: @entries=map { $_.':'.$hashref->{$_} } sort(keys(%$hashref));
1.311 albertel 7741: &untie_user_hash($hashref);
1.123 www 7742: }
1.124 www 7743: my @participants=();
1.134 albertel 7744: my $cutoff=time-60;
1.324 raeburn 7745: $hashref = &tie_user_hash($cdom, $cname, $namespace_inroom,
1.310 albertel 7746: &GDBM_WRCREAT());
7747: if ($hashref) {
7748: $hashref->{$uname.':'.$udom}=time;
7749: foreach my $user (sort(keys(%$hashref))) {
7750: if ($hashref->{$user}>$cutoff) {
7751: push(@participants, 'active_participant:'.$user);
1.123 www 7752: }
7753: }
1.311 albertel 7754: &untie_user_hash($hashref);
1.86 www 7755: }
1.124 www 7756: return (@participants,@entries);
1.86 www 7757: }
7758:
1.234 foxr 7759: sub chat_add {
1.324 raeburn 7760: my ($cdom,$cname,$newchat,$group)=@_;
1.88 albertel 7761: my @entries=();
1.142 www 7762: my $time=time;
1.324 raeburn 7763: my $namespace = 'nohist_chatroom';
7764: my $logfile = 'chatroom.log';
1.335 albertel 7765: if ($group ne '') {
1.324 raeburn 7766: $namespace .= '_'.$group;
7767: $logfile = 'chatroom_'.$group.'.log';
7768: }
7769: my $hashref = &tie_user_hash($cdom, $cname, $namespace,
1.310 albertel 7770: &GDBM_WRCREAT());
7771: if ($hashref) {
7772: @entries=map { $_.':'.$hashref->{$_} } sort(keys(%$hashref));
1.88 albertel 7773: my ($lastid)=($entries[$#entries]=~/^(\w+)\:/);
7774: my ($thentime,$idnum)=split(/\_/,$lastid);
7775: my $newid=$time.'_000000';
7776: if ($thentime==$time) {
7777: $idnum=~s/^0+//;
7778: $idnum++;
7779: $idnum=substr('000000'.$idnum,-6,6);
7780: $newid=$time.'_'.$idnum;
7781: }
1.310 albertel 7782: $hashref->{$newid}=$newchat;
1.88 albertel 7783: my $expired=$time-3600;
1.310 albertel 7784: foreach my $comment (keys(%$hashref)) {
7785: my ($thistime) = ($comment=~/(\d+)\_/);
1.88 albertel 7786: if ($thistime<$expired) {
1.310 albertel 7787: delete $hashref->{$comment};
1.88 albertel 7788: }
7789: }
1.310 albertel 7790: {
7791: my $proname=&propath($cdom,$cname);
1.324 raeburn 7792: if (open(CHATLOG,">>$proname/$logfile")) {
1.310 albertel 7793: print CHATLOG ("$time:".&unescape($newchat)."\n");
7794: }
7795: close(CHATLOG);
1.142 www 7796: }
1.311 albertel 7797: &untie_user_hash($hashref);
1.86 www 7798: }
1.84 albertel 7799: }
7800:
7801: sub unsub {
7802: my ($fname,$clientip)=@_;
7803: my $result;
1.188 foxr 7804: my $unsubs = 0; # Number of successful unsubscribes:
7805:
7806:
7807: # An old way subscriptions were handled was to have a
7808: # subscription marker file:
7809:
7810: Debug("Attempting unlink of $fname.$clientname");
1.161 foxr 7811: if (unlink("$fname.$clientname")) {
1.188 foxr 7812: $unsubs++; # Successful unsub via marker file.
7813: }
7814:
7815: # The more modern way to do it is to have a subscription list
7816: # file:
7817:
1.84 albertel 7818: if (-e "$fname.subscription") {
1.161 foxr 7819: my $found=&addline($fname,$clientname,$clientip,'');
1.188 foxr 7820: if ($found) {
7821: $unsubs++;
7822: }
7823: }
7824:
7825: # If either or both of these mechanisms succeeded in unsubscribing a
7826: # resource we can return ok:
7827:
7828: if($unsubs) {
7829: $result = "ok\n";
1.84 albertel 7830: } else {
1.188 foxr 7831: $result = "not_subscribed\n";
1.84 albertel 7832: }
1.188 foxr 7833:
1.84 albertel 7834: return $result;
7835: }
7836:
1.101 www 7837: sub currentversion {
7838: my $fname=shift;
7839: my $version=-1;
7840: my $ulsdir='';
7841: if ($fname=~/^(.+)\/[^\/]+$/) {
7842: $ulsdir=$1;
7843: }
1.114 albertel 7844: my ($fnamere1,$fnamere2);
7845: # remove version if already specified
1.101 www 7846: $fname=~s/\.\d+\.(\w+(?:\.meta)*)$/\.$1/;
1.114 albertel 7847: # get the bits that go before and after the version number
7848: if ( $fname=~/^(.*\.)(\w+(?:\.meta)*)$/ ) {
7849: $fnamere1=$1;
7850: $fnamere2='.'.$2;
7851: }
1.101 www 7852: if (-e $fname) { $version=1; }
7853: if (-e $ulsdir) {
1.134 albertel 7854: if(-d $ulsdir) {
7855: if (opendir(LSDIR,$ulsdir)) {
7856: my $ulsfn;
7857: while ($ulsfn=readdir(LSDIR)) {
1.101 www 7858: # see if this is a regular file (ignore links produced earlier)
1.134 albertel 7859: my $thisfile=$ulsdir.'/'.$ulsfn;
7860: unless (-l $thisfile) {
1.160 www 7861: if ($thisfile=~/\Q$fnamere1\E(\d+)\Q$fnamere2\E$/) {
1.134 albertel 7862: if ($1>$version) { $version=$1; }
7863: }
7864: }
7865: }
7866: closedir(LSDIR);
7867: $version++;
7868: }
7869: }
7870: }
7871: return $version;
1.101 www 7872: }
7873:
7874: sub thisversion {
7875: my $fname=shift;
7876: my $version=-1;
7877: if ($fname=~/\.(\d+)\.\w+(?:\.meta)*$/) {
7878: $version=$1;
7879: }
7880: return $version;
7881: }
7882:
1.84 albertel 7883: sub subscribe {
7884: my ($userinput,$clientip)=@_;
7885: my $result;
1.293 albertel 7886: my ($cmd,$fname)=split(/:/,$userinput,2);
1.84 albertel 7887: my $ownership=&ishome($fname);
7888: if ($ownership eq 'owner') {
1.101 www 7889: # explitly asking for the current version?
7890: unless (-e $fname) {
7891: my $currentversion=¤tversion($fname);
7892: if (&thisversion($fname)==$currentversion) {
7893: if ($fname=~/^(.+)\.\d+\.(\w+(?:\.meta)*)$/) {
7894: my $root=$1;
7895: my $extension=$2;
7896: symlink($root.'.'.$extension,
7897: $root.'.'.$currentversion.'.'.$extension);
1.102 www 7898: unless ($extension=~/\.meta$/) {
7899: symlink($root.'.'.$extension.'.meta',
7900: $root.'.'.$currentversion.'.'.$extension.'.meta');
7901: }
1.101 www 7902: }
7903: }
7904: }
1.84 albertel 7905: if (-e $fname) {
7906: if (-d $fname) {
7907: $result="directory\n";
7908: } else {
1.161 foxr 7909: if (-e "$fname.$clientname") {&unsub($fname,$clientip);}
1.134 albertel 7910: my $now=time;
1.161 foxr 7911: my $found=&addline($fname,$clientname,$clientip,
7912: "$clientname:$clientip:$now\n");
1.84 albertel 7913: if ($found) { $result="$fname\n"; }
7914: # if they were subscribed to only meta data, delete that
7915: # subscription, when you subscribe to a file you also get
7916: # the metadata
7917: unless ($fname=~/\.meta$/) { &unsub("$fname.meta",$clientip); }
7918: $fname=~s/\/home\/httpd\/html\/res/raw/;
1.476 raeburn 7919: my $protocol = $Apache::lonnet::protocol{$perlvar{'lonHostID'}};
7920: $protocol = 'http' if ($protocol ne 'https');
7921: $fname=$protocol.'://'.&Apache::lonnet::hostname($perlvar{'lonHostID'})."/".$fname;
1.84 albertel 7922: $result="$fname\n";
7923: }
7924: } else {
7925: $result="not_found\n";
7926: }
7927: } else {
7928: $result="rejected\n";
7929: }
7930: return $result;
7931: }
1.287 foxr 7932: # Change the passwd of a unix user. The caller must have
7933: # first verified that the user is a loncapa user.
7934: #
7935: # Parameters:
7936: # user - Unix user name to change.
7937: # pass - New password for the user.
7938: # Returns:
7939: # ok - if success
7940: # other - Some meaningfule error message string.
7941: # NOTE:
7942: # invokes a setuid script to change the passwd.
7943: sub change_unix_password {
7944: my ($user, $pass) = @_;
7945:
7946: &Debug("change_unix_password");
7947: my $execdir=$perlvar{'lonDaemons'};
7948: &Debug("Opening lcpasswd pipeline");
7949: my $pf = IO::File->new("|$execdir/lcpasswd > "
7950: ."$perlvar{'lonDaemons'}"
7951: ."/logs/lcpasswd.log");
7952: print $pf "$user\n$pass\n$pass\n";
7953: close $pf;
7954: my $err = $?;
7955: return ($err < @passwderrors) ? $passwderrors[$err] :
7956: "pwchange_falure - unknown error";
7957:
7958:
7959: }
7960:
1.91 albertel 7961:
7962: sub make_passwd_file {
1.489.2.21 raeburn 7963: my ($uname,$udom,$umode,$npass,$passfilename,$action)=@_;
1.390 raeburn 7964: my $result="ok";
1.91 albertel 7965: if ($umode eq 'krb4' or $umode eq 'krb5') {
7966: {
7967: my $pf = IO::File->new(">$passfilename");
1.261 foxr 7968: if ($pf) {
7969: print $pf "$umode:$npass\n";
1.489.2.21 raeburn 7970: &update_passwd_history($uname,$udom,$umode,$action);
1.261 foxr 7971: } else {
7972: $result = "pass_file_failed_error";
7973: }
1.91 albertel 7974: }
7975: } elsif ($umode eq 'internal') {
1.489.2.21 raeburn 7976: my $ncpass = &hash_passwd($udom,$npass);
1.91 albertel 7977: {
7978: &Debug("Creating internal auth");
7979: my $pf = IO::File->new(">$passfilename");
1.261 foxr 7980: if($pf) {
7981: print $pf "internal:$ncpass\n";
1.489.2.21 raeburn 7982: &update_passwd_history($uname,$udom,$umode,$action);
1.261 foxr 7983: } else {
7984: $result = "pass_file_failed_error";
7985: }
1.91 albertel 7986: }
7987: } elsif ($umode eq 'localauth') {
7988: {
7989: my $pf = IO::File->new(">$passfilename");
1.261 foxr 7990: if($pf) {
7991: print $pf "localauth:$npass\n";
1.489.2.21 raeburn 7992: &update_passwd_history($uname,$udom,$umode,$action);
1.261 foxr 7993: } else {
7994: $result = "pass_file_failed_error";
7995: }
1.91 albertel 7996: }
7997: } elsif ($umode eq 'unix') {
1.489.2.8 raeburn 7998: &logthis(">>>Attempt to create unix account blocked -- unix auth not available for new users.");
7999: $result="no_new_unix_accounts";
1.91 albertel 8000: } elsif ($umode eq 'none') {
8001: {
1.223 foxr 8002: my $pf = IO::File->new("> $passfilename");
1.261 foxr 8003: if($pf) {
8004: print $pf "none:\n";
8005: } else {
8006: $result = "pass_file_failed_error";
8007: }
1.91 albertel 8008: }
8009: } else {
1.390 raeburn 8010: $result="auth_mode_error";
1.91 albertel 8011: }
8012: return $result;
1.121 albertel 8013: }
8014:
1.265 albertel 8015: sub convert_photo {
8016: my ($start,$dest)=@_;
8017: system("convert $start $dest");
8018: }
8019:
1.121 albertel 8020: sub sethost {
8021: my ($remotereq) = @_;
8022: my (undef,$hostid)=split(/:/,$remotereq);
1.322 albertel 8023: # ignore sethost if we are already correct
8024: if ($hostid eq $currenthostid) {
8025: return 'ok';
8026: }
8027:
1.121 albertel 8028: if (!defined($hostid)) { $hostid=$perlvar{'lonHostID'}; }
1.368 albertel 8029: if (&Apache::lonnet::get_host_ip($perlvar{'lonHostID'})
8030: eq &Apache::lonnet::get_host_ip($hostid)) {
1.200 matthew 8031: $currenthostid =$hostid;
1.369 albertel 8032: $currentdomainid=&Apache::lonnet::host_domain($hostid);
1.443 www 8033: # &logthis("Setting hostid to $hostid, and domain to $currentdomainid");
1.121 albertel 8034: } else {
8035: &logthis("Requested host id $hostid not an alias of ".
8036: $perlvar{'lonHostID'}." refusing connection");
8037: return 'unable_to_set';
8038: }
8039: return 'ok';
8040: }
8041:
8042: sub version {
8043: my ($userinput)=@_;
8044: $remoteVERSION=(split(/:/,$userinput))[1];
8045: return "version:$VERSION";
1.127 albertel 8046: }
1.178 foxr 8047:
1.447 raeburn 8048: sub get_usersession_config {
8049: my ($dom,$name) = @_;
8050: my ($usersessionconf,$cached)=&Apache::lonnet::is_cached_new($name,$dom);
8051: if (defined($cached)) {
8052: return $usersessionconf;
8053: } else {
8054: my %domconfig = &Apache::lonnet::get_dom('configuration',['usersessions'],$dom);
8055: if (ref($domconfig{'usersessions'}) eq 'HASH') {
8056: &Apache::lonnet::do_cache_new($name,$dom,$domconfig{'usersessions'},3600);
8057: return $domconfig{'usersessions'};
8058: }
8059: }
8060: return;
8061: }
1.200 matthew 8062:
1.489.2.27 raeburn 8063: sub get_usersearch_config {
8064: my ($dom,$name) = @_;
8065: my ($usersearchconf,$cached)=&Apache::lonnet::is_cached_new($name,$dom);
8066: if (defined($cached)) {
8067: return $usersearchconf;
8068: } else {
8069: my %domconfig = &Apache::lonnet::get_dom('configuration',['directorysrch'],$dom);
8070: &Apache::lonnet::do_cache_new($name,$dom,$domconfig{'directorysrch'},3600);
8071: return $domconfig{'directorysrch'};
8072: }
8073: return;
8074: }
1.450 raeburn 8075:
1.471 raeburn 8076: sub distro_and_arch {
8077: return $dist.':'.$arch;
8078: }
8079:
1.61 harris41 8080: # ----------------------------------- POD (plain old documentation, CPAN style)
8081:
8082: =head1 NAME
8083:
8084: lond - "LON Daemon" Server (port "LOND" 5663)
8085:
8086: =head1 SYNOPSIS
8087:
1.74 harris41 8088: Usage: B<lond>
8089:
8090: Should only be run as user=www. This is a command-line script which
8091: is invoked by B<loncron>. There is no expectation that a typical user
8092: will manually start B<lond> from the command-line. (In other words,
8093: DO NOT START B<lond> YOURSELF.)
1.61 harris41 8094:
8095: =head1 DESCRIPTION
8096:
1.74 harris41 8097: There are two characteristics associated with the running of B<lond>,
8098: PROCESS MANAGEMENT (starting, stopping, handling child processes)
8099: and SERVER-SIDE ACTIVITIES (password authentication, user creation,
8100: subscriptions, etc). These are described in two large
8101: sections below.
8102:
8103: B<PROCESS MANAGEMENT>
8104:
1.61 harris41 8105: Preforker - server who forks first. Runs as a daemon. HUPs.
8106: Uses IDEA encryption
8107:
1.74 harris41 8108: B<lond> forks off children processes that correspond to the other servers
8109: in the network. Management of these processes can be done at the
8110: parent process level or the child process level.
8111:
8112: B<logs/lond.log> is the location of log messages.
8113:
8114: The process management is now explained in terms of linux shell commands,
8115: subroutines internal to this code, and signal assignments:
8116:
8117: =over 4
8118:
8119: =item *
8120:
8121: PID is stored in B<logs/lond.pid>
8122:
8123: This is the process id number of the parent B<lond> process.
8124:
8125: =item *
8126:
8127: SIGTERM and SIGINT
8128:
8129: Parent signal assignment:
8130: $SIG{INT} = $SIG{TERM} = \&HUNTSMAN;
8131:
8132: Child signal assignment:
8133: $SIG{INT} = 'DEFAULT'; (and SIGTERM is DEFAULT also)
8134: (The child dies and a SIGALRM is sent to parent, awaking parent from slumber
8135: to restart a new child.)
8136:
8137: Command-line invocations:
8138: B<kill> B<-s> SIGTERM I<PID>
8139: B<kill> B<-s> SIGINT I<PID>
8140:
8141: Subroutine B<HUNTSMAN>:
8142: This is only invoked for the B<lond> parent I<PID>.
8143: This kills all the children, and then the parent.
8144: The B<lonc.pid> file is cleared.
8145:
8146: =item *
8147:
8148: SIGHUP
8149:
8150: Current bug:
8151: This signal can only be processed the first time
8152: on the parent process. Subsequent SIGHUP signals
8153: have no effect.
8154:
8155: Parent signal assignment:
8156: $SIG{HUP} = \&HUPSMAN;
8157:
8158: Child signal assignment:
8159: none (nothing happens)
8160:
8161: Command-line invocations:
8162: B<kill> B<-s> SIGHUP I<PID>
8163:
8164: Subroutine B<HUPSMAN>:
8165: This is only invoked for the B<lond> parent I<PID>,
8166: This kills all the children, and then the parent.
8167: The B<lond.pid> file is cleared.
8168:
8169: =item *
8170:
8171: SIGUSR1
8172:
8173: Parent signal assignment:
8174: $SIG{USR1} = \&USRMAN;
8175:
8176: Child signal assignment:
8177: $SIG{USR1}= \&logstatus;
8178:
8179: Command-line invocations:
8180: B<kill> B<-s> SIGUSR1 I<PID>
8181:
8182: Subroutine B<USRMAN>:
8183: When invoked for the B<lond> parent I<PID>,
8184: SIGUSR1 is sent to all the children, and the status of
8185: each connection is logged.
1.144 foxr 8186:
8187: =item *
8188:
8189: SIGUSR2
8190:
8191: Parent Signal assignment:
8192: $SIG{USR2} = \&UpdateHosts
8193:
8194: Child signal assignment:
8195: NONE
8196:
1.74 harris41 8197:
8198: =item *
8199:
8200: SIGCHLD
8201:
8202: Parent signal assignment:
8203: $SIG{CHLD} = \&REAPER;
8204:
8205: Child signal assignment:
8206: none
8207:
8208: Command-line invocations:
8209: B<kill> B<-s> SIGCHLD I<PID>
8210:
8211: Subroutine B<REAPER>:
8212: This is only invoked for the B<lond> parent I<PID>.
8213: Information pertaining to the child is removed.
8214: The socket port is cleaned up.
8215:
8216: =back
8217:
8218: B<SERVER-SIDE ACTIVITIES>
8219:
8220: Server-side information can be accepted in an encrypted or non-encrypted
8221: method.
8222:
8223: =over 4
8224:
8225: =item ping
8226:
8227: Query a client in the hosts.tab table; "Are you there?"
8228:
8229: =item pong
8230:
8231: Respond to a ping query.
8232:
8233: =item ekey
8234:
8235: Read in encrypted key, make cipher. Respond with a buildkey.
8236:
8237: =item load
8238:
8239: Respond with CPU load based on a computation upon /proc/loadavg.
8240:
8241: =item currentauth
8242:
8243: Reply with current authentication information (only over an
8244: encrypted channel).
8245:
8246: =item auth
8247:
8248: Only over an encrypted channel, reply as to whether a user's
8249: authentication information can be validated.
8250:
8251: =item passwd
8252:
8253: Allow for a password to be set.
8254:
8255: =item makeuser
8256:
8257: Make a user.
8258:
8259: =item passwd
8260:
8261: Allow for authentication mechanism and password to be changed.
8262:
8263: =item home
1.61 harris41 8264:
1.74 harris41 8265: Respond to a question "are you the home for a given user?"
8266:
8267: =item update
8268:
8269: Update contents of a subscribed resource.
8270:
8271: =item unsubscribe
8272:
8273: The server is unsubscribing from a resource.
8274:
8275: =item subscribe
8276:
8277: The server is subscribing to a resource.
8278:
8279: =item log
8280:
8281: Place in B<logs/lond.log>
8282:
8283: =item put
8284:
8285: stores hash in namespace
8286:
1.489.2.2 raeburn 8287: =item rolesput
1.74 harris41 8288:
8289: put a role into a user's environment
8290:
8291: =item get
8292:
8293: returns hash with keys from array
8294: reference filled in from namespace
8295:
8296: =item eget
8297:
8298: returns hash with keys from array
8299: reference filled in from namesp (encrypts the return communication)
8300:
8301: =item rolesget
8302:
8303: get a role from a user's environment
8304:
8305: =item del
8306:
8307: deletes keys out of array from namespace
8308:
8309: =item keys
8310:
8311: returns namespace keys
8312:
8313: =item dump
8314:
8315: dumps the complete (or key matching regexp) namespace into a hash
8316:
8317: =item store
8318:
8319: stores hash permanently
8320: for this url; hashref needs to be given and should be a \%hashname; the
8321: remaining args aren't required and if they aren't passed or are '' they will
8322: be derived from the ENV
8323:
8324: =item restore
8325:
8326: returns a hash for a given url
8327:
8328: =item querysend
8329:
8330: Tells client about the lonsql process that has been launched in response
8331: to a sent query.
8332:
8333: =item queryreply
8334:
8335: Accept information from lonsql and make appropriate storage in temporary
8336: file space.
8337:
8338: =item idput
8339:
8340: Defines usernames as corresponding to IDs. (These "IDs" are unique identifiers
8341: for each student, defined perhaps by the institutional Registrar.)
8342:
8343: =item idget
8344:
8345: Returns usernames corresponding to IDs. (These "IDs" are unique identifiers
8346: for each student, defined perhaps by the institutional Registrar.)
8347:
8348: =item tmpput
8349:
8350: Accept and store information in temporary space.
8351:
8352: =item tmpget
8353:
8354: Send along temporarily stored information.
8355:
8356: =item ls
8357:
8358: List part of a user's directory.
8359:
1.135 foxr 8360: =item pushtable
8361:
8362: Pushes a file in /home/httpd/lonTab directory. Currently limited to:
8363: hosts.tab and domain.tab. The old file is copied to *.tab.backup but
8364: must be restored manually in case of a problem with the new table file.
8365: pushtable requires that the request be encrypted and validated via
8366: ValidateManager. The form of the command is:
8367: enc:pushtable tablename <tablecontents> \n
8368: where pushtable, tablename and <tablecontents> will be encrypted, but \n is a
8369: cleartext newline.
8370:
1.74 harris41 8371: =item Hanging up (exit or init)
8372:
8373: What to do when a client tells the server that they (the client)
8374: are leaving the network.
8375:
8376: =item unknown command
8377:
8378: If B<lond> is sent an unknown command (not in the list above),
8379: it replys to the client "unknown_cmd".
1.135 foxr 8380:
1.74 harris41 8381:
8382: =item UNKNOWN CLIENT
8383:
8384: If the anti-spoofing algorithm cannot verify the client,
8385: the client is rejected (with a "refused" message sent
8386: to the client, and the connection is closed.
8387:
8388: =back
1.61 harris41 8389:
8390: =head1 PREREQUISITES
8391:
8392: IO::Socket
8393: IO::File
8394: Apache::File
8395: POSIX
8396: Crypt::IDEA
8397: LWP::UserAgent()
8398: GDBM_File
8399: Authen::Krb4
1.91 albertel 8400: Authen::Krb5
1.61 harris41 8401:
8402: =head1 COREQUISITES
8403:
8404: =head1 OSNAMES
8405:
8406: linux
8407:
8408: =head1 SCRIPT CATEGORIES
8409:
8410: Server/Process
8411:
8412: =cut
1.409 foxr 8413:
8414:
8415: =pod
8416:
8417: =head1 LOG MESSAGES
8418:
8419: The messages below can be emitted in the lond log. This log is located
8420: in ~httpd/perl/logs/lond.log Many log messages have HTML encapsulation
8421: to provide coloring if examined from inside a web page. Some do not.
8422: Where color is used, the colors are; Red for sometihhng to get excited
8423: about and to follow up on. Yellow for something to keep an eye on to
8424: be sure it does not get worse, Green,and Blue for informational items.
8425:
8426: In the discussions below, sometimes reference is made to ~httpd
8427: when describing file locations. There isn't really an httpd
8428: user, however there is an httpd directory that gets installed in the
8429: place that user home directories go. On linux, this is usually
8430: (always?) /home/httpd.
8431:
8432:
8433: Some messages are colorless. These are usually (not always)
8434: Green/Blue color level messages.
8435:
8436: =over 2
8437:
8438: =item (Red) LocalConnection rejecting non local: <ip> ne 127.0.0.1
8439:
8440: A local connection negotiation was attempted by
8441: a host whose IP address was not 127.0.0.1.
8442: The socket is closed and the child will exit.
8443: lond has three ways to establish an encyrption
8444: key with a client:
8445:
8446: =over 2
8447:
8448: =item local
8449:
8450: The key is written and read from a file.
8451: This is only valid for connections from localhost.
8452:
8453: =item insecure
8454:
8455: The key is generated by the server and
8456: transmitted to the client.
8457:
8458: =item ssl (secure)
8459:
8460: An ssl connection is negotiated with the client,
8461: the key is generated by the server and sent to the
8462: client across this ssl connection before the
8463: ssl connectionis terminated and clear text
8464: transmission resumes.
8465:
8466: =back
8467:
8468: =item (Red) LocalConnection: caller is insane! init = <init> and type = <type>
8469:
8470: The client is local but has not sent an initialization
8471: string that is the literal "init:local" The connection
8472: is closed and the child exits.
8473:
8474: =item Red CRITICAL Can't get key file <error>
8475:
8476: SSL key negotiation is being attempted but the call to
8477: lonssl::KeyFile failed. This usually means that the
8478: configuration file is not correctly defining or protecting
8479: the directories/files lonCertificateDirectory or
8480: lonnetPrivateKey
8481: <error> is a string that describes the reason that
8482: the key file could not be located.
8483:
8484: =item (Red) CRITICAL Can't get certificates <error>
8485:
8486: SSL key negotiation failed because we were not able to retrives our certificate
8487: or the CA's certificate in the call to lonssl::CertificateFile
8488: <error> is the textual reason this failed. Usual reasons:
8489:
8490: =over 2
8491:
8492: =item Apache config file for loncapa incorrect:
8493:
8494: one of the variables
8495: lonCertificateDirectory, lonnetCertificateAuthority, or lonnetCertificate
8496: undefined or incorrect
8497:
8498: =item Permission error:
8499:
8500: The directory pointed to by lonCertificateDirectory is not readable by lond
8501:
8502: =item Permission error:
8503:
8504: Files in the directory pointed to by lonCertificateDirectory are not readable by lond.
8505:
8506: =item Installation error:
8507:
8508: Either the certificate authority file or the certificate have not
8509: been installed in lonCertificateDirectory.
8510:
8511: =item (Red) CRITICAL SSL Socket promotion failed: <err>
8512:
8513: The promotion of the connection from plaintext to SSL failed
8514: <err> is the reason for the failure. There are two
8515: system calls involved in the promotion (one of which failed),
8516: a dup to produce
8517: a second fd on the raw socket over which the encrypted data
8518: will flow and IO::SOcket::SSL->new_from_fd which creates
8519: the SSL connection on the duped fd.
8520:
8521: =item (Blue) WARNING client did not respond to challenge
8522:
8523: This occurs on an insecure (non SSL) connection negotiation request.
8524: lond generates some number from the time, the PID and sends it to
8525: the client. The client must respond by echoing this information back.
8526: If the client does not do so, that's a violation of the challenge
8527: protocols and the connection will be failed.
8528:
8529: =item (Red) No manager table. Nobody can manage!!
8530:
8531: lond has the concept of privileged hosts that
8532: can perform remote management function such
8533: as update the hosts.tab. The manager hosts
8534: are described in the
8535: ~httpd/lonTabs/managers.tab file.
8536: this message is logged if this file is missing.
8537:
8538:
8539: =item (Green) Registering manager <dnsname> as <cluster_name> with <ipaddress>
8540:
8541: Reports the successful parse and registration
8542: of a specific manager.
8543:
8544: =item Green existing host <clustername:dnsname>
8545:
8546: The manager host is already defined in the hosts.tab
8547: the information in that table, rather than the info in the
8548: manager table will be used to determine the manager's ip.
8549:
8550: =item (Red) Unable to craete <filename>
8551:
8552: lond has been asked to create new versions of an administrative
8553: file (by a manager). When this is done, the new file is created
8554: in a temp file and then renamed into place so that there are always
8555: usable administrative files, even if the update fails. This failure
8556: message means that the temp file could not be created.
8557: The update is abandoned, and the old file is available for use.
8558:
8559: =item (Green) CopyFile from <oldname> to <newname> failed
8560:
8561: In an update of administrative files, the copy of the existing file to a
8562: backup file failed. The installation of the new file may still succeed,
8563: but there will not be a back up file to rever to (this should probably
8564: be yellow).
8565:
8566: =item (Green) Pushfile: backed up <oldname> to <newname>
8567:
8568: See above, the backup of the old administrative file succeeded.
8569:
8570: =item (Red) Pushfile: Unable to install <filename> <reason>
8571:
8572: The new administrative file could not be installed. In this case,
8573: the old administrative file is still in use.
8574:
8575: =item (Green) Installed new < filename>.
8576:
8577: The new administrative file was successfullly installed.
8578:
8579: =item (Red) Reinitializing lond pid=<pid>
8580:
8581: The lonc child process <pid> will be sent a USR2
8582: signal.
8583:
8584: =item (Red) Reinitializing self
8585:
8586: We've been asked to re-read our administrative files,and
8587: are doing so.
8588:
8589: =item (Yellow) error:Invalid process identifier <ident>
8590:
8591: A reinit command was received, but the target part of the
8592: command was not valid. It must be either
8593: 'lond' or 'lonc' but was <ident>
8594:
8595: =item (Green) isValideditCommand checking: Command = <command> Key = <key> newline = <newline>
8596:
8597: Checking to see if lond has been handed a valid edit
8598: command. It is possible the edit command is not valid
8599: in that case there are no log messages to indicate that.
8600:
8601: =item Result of password change for <username> pwchange_success
8602:
8603: The password for <username> was
8604: successfully changed.
8605:
8606: =item Unable to open <user> passwd to change password
8607:
8608: Could not rewrite the
8609: internal password file for a user
8610:
8611: =item Result of password change for <user> : <result>
8612:
8613: A unix password change for <user> was attempted
8614: and the pipe returned <result>
8615:
8616: =item LWP GET: <message> for <fname> (<remoteurl>)
8617:
8618: The lightweight process fetch for a resource failed
8619: with <message> the local filename that should
8620: have existed/been created was <fname> the
8621: corresponding URI: <remoteurl> This is emitted in several
8622: places.
8623:
8624: =item Unable to move <transname> to <destname>
8625:
8626: From fetch_user_file_handler - the user file was replicated but could not
8627: be mv'd to its final location.
8628:
8629: =item Looking for <domain> <username>
8630:
8631: From user_has_session_handler - This should be a Debug call instead
8632: it indicates lond is about to check whether the specified user has a
8633: session active on the specified domain on the local host.
8634:
8635: =item Client <ip> (<name>) hanging up: <input>
8636:
8637: lond has been asked to exit by its client. The <ip> and <name> identify the
8638: client systemand <input> is the full exit command sent to the server.
8639:
8640: =item Red CRITICAL: ABNORMAL EXIT. child <pid> for server <hostname> died through a crass with this error->[<message>].
8641:
8642: A lond child terminated. NOte that this termination can also occur when the
8643: child receives the QUIT or DIE signals. <pid> is the process id of the child,
8644: <hostname> the host lond is working for, and <message> the reason the child died
8645: to the best of our ability to get it (I would guess that any numeric value
8646: represents and errno value). This is immediately followed by
8647:
8648: =item Famous last words: Catching exception - <log>
8649:
8650: Where log is some recent information about the state of the child.
8651:
8652: =item Red CRITICAL: TIME OUT <pid>
8653:
8654: Some timeout occured for server <pid>. THis is normally a timeout on an LWP
8655: doing an HTTP::GET.
8656:
8657: =item child <pid> died
8658:
8659: The reaper caught a SIGCHILD for the lond child process <pid>
8660: This should be modified to also display the IP of the dying child
8661: $children{$pid}
8662:
8663: =item Unknown child 0 died
8664: A child died but the wait for it returned a pid of zero which really should not
8665: ever happen.
8666:
8667: =item Child <which> - <pid> looks like we missed it's death
8668:
8669: When a sigchild is received, the reaper process checks all children to see if they are
8670: alive. If children are dying quite quickly, the lack of signal queuing can mean
8671: that a signal hearalds the death of more than one child. If so this message indicates
8672: which other one died. <which> is the ip of a dead child
8673:
8674: =item Free socket: <shutdownretval>
8675:
8676: The HUNTSMAN sub was called due to a SIGINT in a child process. The socket is being shutdown.
8677: for whatever reason, <shutdownretval> is printed but in fact shutdown() is not documented
8678: to return anything. This is followed by:
8679:
8680: =item Red CRITICAL: Shutting down
8681:
8682: Just prior to exit.
8683:
8684: =item Free socket: <shutdownretval>
8685:
8686: The HUPSMAN sub was called due to a SIGHUP. all children get killsed, and lond execs itself.
8687: This is followed by:
8688:
8689: =item (Red) CRITICAL: Restarting
8690:
8691: lond is about to exec itself to restart.
8692:
8693: =item (Blue) Updating connections
8694:
8695: (In response to a USR2). All the children (except the one for localhost)
8696: are about to be killed, the hosts tab reread, and Apache reloaded via apachereload.
8697:
8698: =item (Blue) UpdateHosts killing child <pid> for ip <ip>
8699:
8700: Due to USR2 as above.
8701:
8702: =item (Green) keeping child for ip <ip> (pid = <pid>)
8703:
8704: In response to USR2 as above, the child indicated is not being restarted because
8705: it's assumed that we'll always need a child for the localhost.
8706:
8707:
8708: =item Going to check on the children
8709:
8710: Parent is about to check on the health of the child processes.
8711: Note that this is in response to a USR1 sent to the parent lond.
8712: there may be one or more of the next two messages:
8713:
8714: =item <pid> is dead
8715:
8716: A child that we have in our child hash as alive has evidently died.
8717:
8718: =item Child <pid> did not respond
8719:
8720: In the health check the child <pid> did not update/produce a pid_.txt
8721: file when sent it's USR1 signal. That process is killed with a 9 signal, as it's
8722: assumed to be hung in some un-fixable way.
8723:
8724: =item Finished checking children
8725:
8726: Master processs's USR1 processing is cojmplete.
8727:
8728: =item (Red) CRITICAL: ------- Starting ------
8729:
8730: (There are more '-'s on either side). Lond has forked itself off to
8731: form a new session and is about to start actual initialization.
8732:
8733: =item (Green) Attempting to start child (<client>)
8734:
8735: Started a new child process for <client>. Client is IO::Socket object
8736: connected to the child. This was as a result of a TCP/IP connection from a client.
8737:
8738: =item Unable to determine who caller was, getpeername returned nothing
8739:
8740: In child process initialization. either getpeername returned undef or
8741: a zero sized object was returned. Processing continues, but in my opinion,
8742: this should be cause for the child to exit.
8743:
8744: =item Unable to determine clientip
8745:
8746: In child process initialization. The peer address from getpeername was not defined.
8747: The client address is stored as "Unavailable" and processing continues.
8748:
8749: =item (Yellow) INFO: Connection <ip> <name> connection type = <type>
8750:
8751: In child initialization. A good connectionw as received from <ip>.
8752:
8753: =over 2
8754:
8755: =item <name>
8756:
8757: is the name of the client from hosts.tab.
8758:
8759: =item <type>
8760:
8761: Is the connection type which is either
8762:
8763: =over 2
8764:
8765: =item manager
8766:
8767: The connection is from a manager node, not in hosts.tab
8768:
8769: =item client
8770:
8771: the connection is from a non-manager in the hosts.tab
8772:
8773: =item both
8774:
8775: The connection is from a manager in the hosts.tab.
8776:
8777: =back
8778:
8779: =back
8780:
8781: =item (Blue) Certificates not installed -- trying insecure auth
8782:
8783: One of the certificate file, key file or
8784: certificate authority file could not be found for a client attempting
8785: SSL connection intiation. COnnection will be attemptied in in-secure mode.
8786: (this would be a system with an up to date lond that has not gotten a
8787: certificate from us).
8788:
8789: =item (Green) Successful local authentication
8790:
8791: A local connection successfully negotiated the encryption key.
8792: In this case the IDEA key is in a file (that is hopefully well protected).
8793:
8794: =item (Green) Successful ssl authentication with <client>
8795:
8796: The client (<client> is the peer's name in hosts.tab), has successfully
8797: negotiated an SSL connection with this child process.
8798:
8799: =item (Green) Successful insecure authentication with <client>
8800:
8801:
8802: The client has successfully negotiated an insecure connection withthe child process.
8803:
8804: =item (Yellow) Attempted insecure connection disallowed
8805:
8806: The client attempted and failed to successfully negotiate a successful insecure
8807: connection. This can happen either because the variable londAllowInsecure is false
8808: or undefined, or becuse the child did not successfully echo back the challenge
8809: string.
8810:
8811:
8812: =back
8813:
1.441 raeburn 8814: =back
8815:
1.409 foxr 8816:
8817: =cut
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