1: # The LearningOnline Network with CAPA
2: # Routines for messaging
3: #
4: # $Id: lonmsg.pm,v 1.187 2006/12/05 02:55:53 albertel Exp $
5: #
6: # Copyright Michigan State University Board of Trustees
7: #
8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
9: #
10: # LON-CAPA is free software; you can redistribute it and/or modify
11: # it under the terms of the GNU General Public License as published by
12: # the Free Software Foundation; either version 2 of the License, or
13: # (at your option) any later version.
14: #
15: # LON-CAPA is distributed in the hope that it will be useful,
16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18: # GNU General Public License for more details.
19: #
20: # You should have received a copy of the GNU General Public License
21: # along with LON-CAPA; if not, write to the Free Software
22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23: #
24: # /home/httpd/html/adm/gpl.txt
25: #
26: # http://www.lon-capa.org/
27: #
28:
29: package Apache::lonmsg;
30:
31: use strict;
32: use Apache::lonnet;
33: use HTML::TokeParser();
34: use Apache::lonlocal;
35: use Mail::Send;
36: use LONCAPA qw(:DEFAULT :match);
37:
38: {
39: my $uniq;
40: sub get_uniq {
41: $uniq++;
42: return $uniq;
43: }
44: }
45:
46: # ===================================================================== Package
47:
48: sub packagemsg {
49: my ($subject,$message,$citation,$baseurl,$attachmenturl,
50: $recuser,$recdomain,$msgid,$type,$crsmsgid)=@_;
51: $message =&HTML::Entities::encode($message,'<>&"');
52: $citation=&HTML::Entities::encode($citation,'<>&"');
53: $subject =&HTML::Entities::encode($subject,'<>&"');
54: #remove machine specification
55: $baseurl =~ s|^http://[^/]+/|/|;
56: $baseurl =&HTML::Entities::encode($baseurl,'<>&"');
57: #remove machine specification
58: $attachmenturl =~ s|^http://[^/]+/|/|;
59: $attachmenturl =&HTML::Entities::encode($attachmenturl,'<>&"');
60: my $course_context;
61: if (defined($env{'form.replyid'})) {
62: my ($sendtime,$shortsubj,$fromname,$fromdomain,$count,$origcid)=
63: split(/\:/,&unescape($env{'form.replyid'}));
64: $course_context = $origcid;
65: }
66: foreach my $key (keys(%env)) {
67: if ($key=~/^form\.(rep)?rec\_(.*)$/) {
68: my ($sendtime,$shortsubj,$fromname,$fromdomain,$count,$origcid) =
69: split(/\:/,&unescape($2));
70: $course_context = $origcid;
71: last;
72: }
73: }
74: unless(defined($course_context)) {
75: $course_context = $env{'request.course.id'};
76: }
77: my $now=time;
78: my $msgcount = &get_uniq();
79: unless(defined($msgid)) {
80: $msgid = &buildmsgid($now,$subject,$env{'user.name'},$env{'user.domain'},
81: $msgcount,$course_context,$$);
82: }
83: my $result = '<sendername>'.$env{'user.name'}.'</sendername>'.
84: '<senderdomain>'.$env{'user.domain'}.'</senderdomain>'.
85: '<subject>'.$subject.'</subject>'.
86: '<time>'.&Apache::lonlocal::locallocaltime($now).'</time>';
87: if (defined($crsmsgid)) {
88: $result.= '<courseid>'.$course_context.'</courseid>'.
89: '<coursesec>'.$env{'request.course.sec'}.'</coursesec>'.
90: '<msgid>'.$msgid.'</msgid>'.
91: '<coursemsgid>'.$crsmsgid.'</coursemsgid>'.
92: '<message>'.$message.'</message>';
93: return ($msgid,$result);
94: }
95: $result .= '<servername>'.$ENV{'SERVER_NAME'}.'</servername>'.
96: '<host>'.$ENV{'HTTP_HOST'}.'</host>'.
97: '<client>'.$ENV{'REMOTE_ADDR'}.'</client>'.
98: '<browsertype>'.$env{'browser.type'}.'</browsertype>'.
99: '<browseros>'.$env{'browser.os'}.'</browseros>'.
100: '<browserversion>'.$env{'browser.version'}.'</browserversion>'.
101: '<browsermathml>'.$env{'browser.mathml'}.'</browsermathml>'.
102: '<browserraw>'.$ENV{'HTTP_USER_AGENT'}.'</browserraw>'.
103: '<courseid>'.$course_context.'</courseid>'.
104: '<coursesec>'.$env{'request.course.sec'}.'</coursesec>'.
105: '<role>'.$env{'request.role'}.'</role>'.
106: '<resource>'.$env{'request.filename'}.'</resource>'.
107: '<msgid>'.$msgid.'</msgid>';
108: if (ref($recuser) eq 'ARRAY') {
109: for (my $i=0; $i<@{$recuser}; $i++) {
110: if ($type eq 'dcmail') {
111: my ($username,$email) = split(/:/,$$recuser[$i]);
112: $username = &unescape($username);
113: $email = &unescape($email);
114: $username = &HTML::Entities::encode($username,'<>&"');
115: $email = &HTML::Entities::encode($email,'<>&"');
116: $result .= '<recipient username="'.$username.'">'.
117: $email.'</recipient>';
118: } else {
119: $result .= '<recuser>'.$$recuser[$i].'</recuser>'.
120: '<recdomain>'.$$recdomain[$i].'</recdomain>';
121: }
122: }
123: } else {
124: $result .= '<recuser>'.$recuser.'</recuser>'.
125: '<recdomain>'.$recdomain.'</recdomain>';
126: }
127: $result .= '<message>'.$message.'</message>';
128: if (defined($citation)) {
129: $result.='<citation>'.$citation.'</citation>';
130: }
131: if (defined($baseurl)) {
132: $result.= '<baseurl>'.$baseurl.'</baseurl>';
133: }
134: if (defined($attachmenturl)) {
135: $result.= '<attachmenturl>'.$attachmenturl.'</attachmenturl>';
136: }
137: return $msgid,$result;
138: }
139:
140: # ================================================== Unpack message into a hash
141:
142: sub unpackagemsg {
143: my ($message,$notoken)=@_;
144: my %content=();
145: my $parser=HTML::TokeParser->new(\$message);
146: my $token;
147: while ($token=$parser->get_token) {
148: if ($token->[0] eq 'S') {
149: my $entry=$token->[1];
150: my $value=$parser->get_text('/'.$entry);
151: if (($entry eq 'recuser') || ($entry eq 'recdomain')) {
152: push(@{$content{$entry}},$value);
153: } elsif ($entry eq 'recipient') {
154: my $username = $token->[2]{'username'};
155: $username = &HTML::Entities::decode($username,'<>&"');
156: $content{$entry}{$username} = $value;
157: } else {
158: $content{$entry}=$value;
159: }
160: }
161: }
162: if (!exists($content{'recuser'})) { $content{'recuser'} = []; }
163: if ($content{'attachmenturl'}) {
164: my ($fname)=($content{'attachmenturl'}=~m|/([^/]+)$|);
165: if ($notoken) {
166: $content{'message'}.='<p>'.&mt('Attachment').': <tt>'.$fname.'</tt>';
167: } else {
168: &Apache::lonnet::allowuploaded('/adm/msg',
169: $content{'attachmenturl'});
170: $content{'message'}.='<p>'.&mt('Attachment').
171: ': <a href="'.$content{'attachmenturl'}.'"><tt>'.
172: $fname.'</tt></a>';
173: }
174: }
175: return %content;
176: }
177:
178: # ======================================================= Get info out of msgid
179:
180: sub buildmsgid {
181: my ($now,$subject,$uname,$udom,$msgcount,$course_context,$pid) = @_;
182: $subject=&escape($subject);
183: return(&escape($now.':'.$subject.':'.$uname.':'.
184: $udom.':'.$msgcount.':'.$course_context.':'.$pid));
185: }
186:
187: sub unpackmsgid {
188: my ($msgid,$folder,$skipstatus,$status_cache)=@_;
189: $msgid=&unescape($msgid);
190: my ($sendtime,$shortsubj,$fromname,$fromdomain,$count,$fromcid,
191: $processid)=split(/\:/,&unescape($msgid));
192: $shortsubj = &unescape($shortsubj);
193: $shortsubj = &HTML::Entities::decode($shortsubj);
194: if (!defined($processid)) { $fromcid = ''; }
195: my %status=();
196: unless ($skipstatus) {
197: if (ref($status_cache)) {
198: $status{$msgid} = $status_cache->{$msgid};
199: } else {
200: my $suffix=&foldersuffix($folder);
201: %status=&Apache::lonnet::get('email_status'.$suffix,[$msgid]);
202: }
203: if ($status{$msgid}=~/^error\:/) { $status{$msgid}=''; }
204: unless ($status{$msgid}) { $status{$msgid}='new'; }
205: }
206: return ($sendtime,$shortsubj,$fromname,$fromdomain,$status{$msgid},$fromcid);
207: }
208:
209:
210: sub sendemail {
211: my ($to,$subject,$body)=@_;
212: my %senderemails=&Apache::loncommon::getemails();
213: my $senderaddress='';
214: foreach my $type ('notification','permanentemail','critnotification') {
215: if ($senderemails{$type}) {
216: $senderaddress=$senderemails{$type};
217: }
218: }
219: $body=
220: "*** ".&mt('This is an automatic message generated by the LON-CAPA system.')."\n".
221: "*** ".($senderaddress?&mt('You can reply to this message'):&mt('Please do not reply to this address.')."\n*** ".
222: &mt('A reply will not be received by the recipient!'))."\n\n".$body;
223: my $msg = new Mail::Send;
224: $msg->to($to);
225: $msg->subject('[LON-CAPA] '.$subject);
226: if ($senderaddress) { $msg->add('Reply-to',$senderaddress); }
227: if (my $fh = $msg->open()) {
228: print $fh $body;
229: $fh->close;
230: }
231: }
232:
233: # ==================================================== Send notification emails
234:
235: sub sendnotification {
236: my ($to,$touname,$toudom,$subj,$crit,$text)=@_;
237: my $sender=$env{'environment.firstname'}.' '.$env{'environment.lastname'};
238: unless ($sender=~/\w/) {
239: $sender=$env{'user.name'}.'@'.$env{'user.domain'};
240: }
241: my $critical=($crit?' critical':'');
242: $text=~s/\<\;/\</gs;
243: $text=~s/\>\;/\>/gs;
244: $text=~s/\<\/*[^\>]+\>//gs;
245: my $url='http://'.
246: $Apache::lonnet::hostname{&Apache::lonnet::homeserver($touname,$toudom)}.
247: '/adm/email?username='.$touname.'&domain='.$toudom;
248: my $body=(<<ENDMSG);
249: You received a$critical message from $sender in LON-CAPA. The subject is
250:
251: $subj
252:
253: === Excerpt ============================================================
254: $text
255: ========================================================================
256:
257: Use
258:
259: $url
260:
261: to access the full message.
262: ENDMSG
263: &sendemail($to,'New'.$critical.' message from '.$sender,$body);
264: }
265: # ============================================================= Check for email
266:
267: sub newmail {
268: if ((time-$env{'user.mailcheck.time'})>300) {
269: my %what=&Apache::lonnet::get('email_status',['recnewemail']);
270: &Apache::lonnet::appenv('user.mailcheck.time'=>time);
271: if ($what{'recnewemail'}>0) { return 1; }
272: }
273: return 0;
274: }
275:
276: # =============================== Automated message to the author of a resource
277:
278: =pod
279:
280: =item * B<author_res_msg($filename, $message)>: Sends message $message to the owner
281: of the resource with the URI $filename.
282:
283: =cut
284:
285: sub author_res_msg {
286: my ($filename,$message)=@_;
287: unless ($message) { return 'empty'; }
288: $filename=&Apache::lonnet::declutter($filename);
289: my ($domain,$author,@dummy)=split(/\//,$filename);
290: my $homeserver=&Apache::lonnet::homeserver($author,$domain);
291: if ($homeserver ne 'no_host') {
292: my $id=unpack("%32C*",$message);
293: $message .= " <p>This error occurred on machine ".
294: $Apache::lonnet::perlvar{'lonHostID'}."</p>";
295: my $msgid;
296: ($msgid,$message)=&packagemsg($filename,$message);
297: return &Apache::lonnet::reply('put:'.$domain.':'.$author.
298: ':nohist_res_msgs:'.
299: &escape($filename.'_'.$id).'='.
300: &escape($message),$homeserver);
301: }
302: return 'no_host';
303: }
304:
305: # =========================================== Retrieve author resource messages
306:
307: sub retrieve_author_res_msg {
308: my $url=shift;
309: $url=&Apache::lonnet::declutter($url);
310: my ($domain,$author)=($url=~/^($match_domain)\/($match_username)\//);
311: my %errormsgs=&Apache::lonnet::dump('nohist_res_msgs',$domain,$author);
312: my $msgs='';
313: foreach (keys %errormsgs) {
314: if ($_=~/^\Q$url\E\_\d+$/) {
315: my %content=&unpackagemsg($errormsgs{$_});
316: $msgs.='<p><img src="/adm/lonMisc/bomb.gif" /><b>'.
317: $content{'time'}.'</b>: '.$content{'message'}.
318: '<br /></p>';
319: }
320: }
321: return $msgs;
322: }
323:
324:
325: # =============================== Delete all author messages related to one URL
326:
327: sub del_url_author_res_msg {
328: my $url=shift;
329: $url=&Apache::lonnet::declutter($url);
330: my ($domain,$author)=($url=~/^($match_domain)\/($match_username)\//);
331: my @delmsgs=();
332: foreach (&Apache::lonnet::getkeys('nohist_res_msgs',$domain,$author)) {
333: if ($_=~/^\Q$url\E\_\d+$/) {
334: push (@delmsgs,$_);
335: }
336: }
337: return &Apache::lonnet::del('nohist_res_msgs',\@delmsgs,$domain,$author);
338: }
339: # =================================== Clear out all author messages in URL path
340:
341: sub clear_author_res_msg {
342: my $url=shift;
343: $url=&Apache::lonnet::declutter($url);
344: my ($domain,$author)=($url=~/^($match_domain)\/($match_username)\//);
345: my @delmsgs=();
346: foreach (&Apache::lonnet::getkeys('nohist_res_msgs',$domain,$author)) {
347: if ($_=~/^\Q$url\E/) {
348: push (@delmsgs,$_);
349: }
350: }
351: return &Apache::lonnet::del('nohist_res_msgs',\@delmsgs,$domain,$author);
352: }
353: # ================= Return hash with URLs for which there is a resource message
354:
355: sub all_url_author_res_msg {
356: my ($author,$domain)=@_;
357: my %returnhash=();
358: foreach (&Apache::lonnet::getkeys('nohist_res_msgs',$domain,$author)) {
359: $_=~/^(.+)\_\d+/;
360: $returnhash{$1}=1;
361: }
362: return %returnhash;
363: }
364:
365: # ====================================== Add a comment to the User Notes screen
366:
367: sub store_instructor_comment {
368: my ($msg,$uname,$udom) = @_;
369: my $cid = $env{'request.course.id'};
370: my $cnum = $env{'course.'.$cid.'.num'};
371: my $cdom = $env{'course.'.$cid.'.domain'};
372: my $subject= &mt('Record').' ['.$uname.':'.$udom.']';
373: my $result = &user_normal_msg_raw($cnum,$cdom,$subject,$msg);
374: return $result;
375: }
376:
377: # ================================================== Critical message to a user
378:
379: sub user_crit_msg_raw {
380: my ($user,$domain,$subject,$message,$sendback,$toperm,$sentmessage)=@_;
381: # Check if allowed missing
382: my $status='';
383: my $msgid='undefined';
384: unless (($message)&&($user)&&($domain)) { $status='empty'; };
385: my $text=$message;
386: my $homeserver=&Apache::lonnet::homeserver($user,$domain);
387: if ($homeserver ne 'no_host') {
388: ($msgid,$message)=&packagemsg($subject,$message);
389: if ($sendback) { $message.='<sendback>true</sendback>'; }
390: $status=&Apache::lonnet::critical(
391: 'put:'.$domain.':'.$user.':critical:'.
392: &escape($msgid).'='.
393: &escape($message),$homeserver);
394: if (defined($sentmessage)) {
395: $$sentmessage = $message;
396: }
397: } else {
398: $status='no_host';
399: }
400: # Notifications
401: my %userenv = &Apache::loncommon::getemails($user,$domain);
402: if ($userenv{'critnotification'}) {
403: &sendnotification($userenv{'critnotification'},$user,$domain,$subject,1,
404: $text);
405: }
406: if ($toperm && $userenv{'permanentemail'}) {
407: &sendnotification($userenv{'permanentemail'},$user,$domain,$subject,1,
408: $text);
409: }
410: # Log this
411: &Apache::lonnet::logthis(
412: 'Sending critical email '.$msgid.
413: ', log status: '.
414: &Apache::lonnet::log($env{'user.domain'},$env{'user.name'},
415: $env{'user.home'},
416: 'Sending critical '.$msgid.' to '.$user.' at '.$domain.' with status: '
417: .$status));
418: return $status;
419: }
420:
421: # New routine that respects "forward" and calls old routine
422:
423: =pod
424:
425: =item * B<user_crit_msg($user, $domain, $subject, $message, $sendback)>: Sends
426: a critical message $message to the $user at $domain. If $sendback is true,
427: a reciept will be sent to the current user when $user recieves the message.
428:
429: Additionally it will check if the user has a Forwarding address
430: set, and send the message to that address instead
431:
432: returns
433: - in array context a list of results for each message that was sent
434: - in scalar context a space seperated list of results for each
435: message sent
436:
437: =cut
438:
439: sub user_crit_msg {
440: my ($user,$domain,$subject,$message,$sendback,$toperm,$sentmessage)=@_;
441: my @status;
442: my %userenv = &Apache::lonnet::get('environment',['msgforward'],
443: $domain,$user);
444: my $msgforward=$userenv{'msgforward'};
445: if ($msgforward) {
446: foreach my $addr (split(/\,/,$msgforward)) {
447: my ($forwuser,$forwdomain)=split(/\:/,$addr);
448: push(@status,
449: &user_crit_msg_raw($forwuser,$forwdomain,$subject,$message,
450: $sendback,$toperm,$sentmessage));
451: }
452: } else {
453: push(@status,
454: &user_crit_msg_raw($user,$domain,$subject,$message,$sendback,
455: $toperm,$sentmessage));
456: }
457: if (wantarray) {
458: return @status;
459: }
460: return join(' ',@status);
461: }
462:
463: # =================================================== Critical message received
464:
465: sub user_crit_received {
466: my $msgid=shift;
467: my %message=&Apache::lonnet::get('critical',[$msgid]);
468: my %contents=&unpackagemsg($message{$msgid},1);
469: my $status='rec: '.($contents{'sendback'}?
470: &user_normal_msg($contents{'sendername'},$contents{'senderdomain'},
471: &mt('Receipt').': '.$env{'user.name'}.' '.&mt('at').' '.$env{'user.domain'}.', '.$contents{'subject'},
472: &mt('User').' '.$env{'user.name'}.' '.&mt('at').' '.$env{'user.domain'}.
473: ' acknowledged receipt of message'."\n".' "'.
474: $contents{'subject'}.'"'."\n".&mt('dated').' '.
475: $contents{'time'}.".\n"
476: ):'no msg req');
477: $status.=' trans: '.
478: &Apache::lonnet::put(
479: 'nohist_email',{$contents{'msgid'} => $message{$msgid}});
480: $status.=' del: '.
481: &Apache::lonnet::del('critical',[$contents{'msgid'}]);
482: &Apache::lonnet::log($env{'user.domain'},$env{'user.name'},
483: $env{'user.home'},'Received critical message '.
484: $contents{'msgid'}.
485: ', '.$status);
486: return $status;
487: }
488:
489: # ======================================================== Normal communication
490:
491: sub user_normal_msg_raw {
492: my ($user,$domain,$subject,$message,$citation,$baseurl,$attachmenturl,
493: $toperm,$currid,$newid,$sentmessage,$crsmsgid)=@_;
494: # Check if allowed missing
495: my ($status,$packed_message);
496: my $msgid='undefined';
497: my $text=$message;
498: unless (($message)&&($user)&&($domain)) { $status='empty'; };
499: my $homeserver=&Apache::lonnet::homeserver($user,$domain);
500: if ($homeserver ne 'no_host') {
501: ($msgid,$packed_message)=
502: &packagemsg($subject,$message,$citation,$baseurl,
503: $attachmenturl,$user,$domain,$currid,
504: undef,$crsmsgid);
505:
506: # Store in user folder
507: $status=&Apache::lonnet::critical(
508: 'put:'.$domain.':'.$user.':nohist_email:'.
509: &escape($msgid).'='.
510: &escape($packed_message),$homeserver);
511: # Save new message received time
512: &Apache::lonnet::put
513: ('email_status',{'recnewemail'=>time},$domain,$user);
514: # Into sent-mail folder unless a broadcast message or critical message
515: unless (($env{'request.course.id'}) &&
516: (($env{'form.sendmode'} eq 'group') ||
517: (($env{'form.critmsg'}) || ($env{'form.sendbck'})) &&
518: (&Apache::lonnet::allowed('srm',$env{'request.course.id'})
519: || &Apache::lonnet::allowed('srm',$env{'request.course.id'}.
520: '/'.$env{'request.course.sec'})))) {
521: (undef, my $packed_message_no_citation)=
522: &packagemsg($subject,$message,undef ,$baseurl,
523: $attachmenturl,$user,$domain,$currid,
524: undef,$crsmsgid);
525:
526: $status .= &store_sent_mail($msgid,$packed_message_no_citation);
527: }
528: } else {
529: $status='no_host';
530: }
531: if (defined($newid)) {
532: $$newid = $msgid;
533: }
534: if (defined($sentmessage)) {
535: $$sentmessage = $packed_message;
536: }
537:
538: # Notifications
539: my %userenv = &Apache::lonnet::get('environment',['notification',
540: 'permanentemail'],
541: $domain,$user);
542: if ($userenv{'notification'}) {
543: &sendnotification($userenv{'notification'},$user,$domain,$subject,0,
544: $text);
545: }
546: if ($toperm && $userenv{'permanentemail'}) {
547: &sendnotification($userenv{'permanentemail'},$user,$domain,$subject,0,
548: $text);
549: }
550: &Apache::lonnet::log($env{'user.domain'},$env{'user.name'},
551: $env{'user.home'},
552: 'Sending '.$msgid.' to '.$user.' at '.$domain.' with status: '.$status);
553: return $status;
554: }
555:
556: # New routine that respects "forward" and calls old routine
557:
558: =pod
559:
560: =item * B<user_normal_msg($user, $domain, $subject, $message,
561: $citation, $baseurl, $attachmenturl)>: Sends a message to the
562: $user at $domain, with subject $subject and message $message.
563:
564: =cut
565:
566: sub user_normal_msg {
567: my ($user,$domain,$subject,$message,$citation,$baseurl,$attachmenturl,
568: $toperm,$sentmessage)=@_;
569: my $status='';
570: my %userenv = &Apache::lonnet::get('environment',['msgforward'],
571: $domain,$user);
572: my $msgforward=$userenv{'msgforward'};
573: if ($msgforward) {
574: foreach (split(/\,/,$msgforward)) {
575: my ($forwuser,$forwdomain)=split(/\:/,$_);
576: $status.=
577: &user_normal_msg_raw($forwuser,$forwdomain,$subject,$message,
578: $citation,$baseurl,$attachmenturl,$toperm,
579: undef,undef,$sentmessage).' ';
580: }
581: } else {
582: $status=&user_normal_msg_raw($user,$domain,$subject,$message,
583: $citation,$baseurl,$attachmenturl,$toperm,
584: undef,undef,$sentmessage);
585: }
586: return $status;
587: }
588:
589: sub store_sent_mail {
590: my ($msgid,$message) = @_;
591: my $status =' '.&Apache::lonnet::critical(
592: 'put:'.$env{'user.domain'}.':'.$env{'user.name'}.
593: ':nohist_email_sent:'.
594: &escape($msgid).'='.
595: &escape($message),$env{'user.home'});
596: return $status;
597: }
598:
599: # =============================================================== Folder suffix
600:
601: sub foldersuffix {
602: my $folder=shift;
603: unless ($folder) { return ''; }
604: return '_'.&escape($folder);
605: }
606:
607: 1;
608: __END__
609:
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