1: # The LearningOnline Network
2: # Feedback
3: #
4: # $Id: lonfeedback.pm,v 1.76 2004/02/11 22:14:10 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: # (Internal Server Error Handler
29: #
30: # (Login Screen
31: # 5/21/99,5/22,5/25,5/26,5/31,6/2,6/10,7/12,7/14,
32: # 1/14/00,5/29,5/30,6/1,6/29,7/1,11/9 Gerd Kortemeyer)
33: #
34: # 3/1/1 Gerd Kortemeyer)
35: #
36: # 3/1,2/3,2/5,2/6,2/8 Gerd Kortemeyer
37: # 2/9 Guy Albertelli
38: # 2/10 Gerd Kortemeyer
39: # 2/13 Guy Albertelli
40: # 7/25 Gerd Kortemeyer
41: # 7/26 Guy Albertelli
42: # 7/26,8/10,10/1,11/5,11/6,12/27,12/29 Gerd Kortemeyer
43: # YEAR=2002
44: # 1/1,1/16 Gerd Kortemeyer
45: #
46:
47: package Apache::lonfeedback;
48:
49: use strict;
50: use Apache::Constants qw(:common);
51: use Apache::lonmsg();
52: use Apache::loncommon();
53: use Apache::lontexconvert();
54: use Apache::lonlocal;
55:
56: sub list_discussion {
57: my ($mode,$status,$symb)=@_;
58: &Apache::lonnet::logthis("status is $status");
59: if (!($status eq 'CAN_ANSWER' || $status eq 'CANNOT_ANSWER')) {
60: return '';
61: }
62: my $discussiononly=0;
63: if ($mode eq 'board') { $discussiononly=1; }
64: unless ($ENV{'request.course.id'}) { return ''; }
65: my $crs='/'.$ENV{'request.course.id'};
66: if ($ENV{'request.course.sec'}) {
67: $crs.='_'.$ENV{'request.course.sec'};
68: }
69: $crs=~s/\_/\//g;
70: unless ($symb) {
71: $symb=&Apache::lonnet::symbread();
72: }
73: unless ($symb) { return ''; }
74: my $seeid=&Apache::lonnet::allowed('rin',$crs);
75: my $viewgrades=&Apache::lonnet::allowed('vgr',$crs);
76: my @discussionitems=();
77: # backward compatibility (bulletin boards used to be 'wrapped')
78: my $ressymb=$symb;
79: if ($mode eq 'board') {
80: $ressymb=~s|(bulletin___\d+___)|$1adm/wrapper|;
81: }
82: my %contrib=&Apache::lonnet::restore($ressymb,$ENV{'request.course.id'},
83: $ENV{'course.'.$ENV{'request.course.id'}.'.domain'},
84: $ENV{'course.'.$ENV{'request.course.id'}.'.num'});
85: my $visible=0;
86: my @depth=();
87: my @original=();
88: my @index=();
89: my @replies=();
90: my %alldiscussion=();
91: my $maxdepth=0;
92:
93: my $target='';
94: unless ($ENV{'browser.interface'} eq 'textual' ||
95: $ENV{'environment.remote'} eq 'off' ) {
96: $target='target="LONcom"';
97: }
98: if ($contrib{'version'}) {
99: for (my $id=1;$id<=$contrib{'version'};$id++) {
100: my $idx=$id;
101: my $hidden=($contrib{'hidden'}=~/\.$idx\./);
102: my $deleted=($contrib{'deleted'}=~/\.$idx\./);
103: my $origindex='0.';
104: if (($contrib{$idx.':replyto'}) && ($ENV{'environment.threadeddiscussion'})) {
105: # this is a follow-up message
106: $original[$idx]=$original[$contrib{$idx.':replyto'}];
107: $depth[$idx]=$depth[$contrib{$idx.':replyto'}]+1;
108: $origindex=$index[$contrib{$idx.':replyto'}];
109: if ($depth[$idx]>$maxdepth) { $maxdepth=$depth[$idx]; }
110: } else {
111: # this is an original message
112: $original[$idx]=0;
113: $depth[$idx]=0;
114: }
115: if ($replies[$depth[$idx]]) {
116: $replies[$depth[$idx]]++;
117: } else {
118: $replies[$depth[$idx]]=1;
119: }
120: unless ((($hidden) && (!$seeid)) || ($deleted)) {
121: $visible++;
122: my $message=$contrib{$idx.':message'};
123: $message=~s/\n/\<br \/\>/g;
124: $message=&Apache::lontexconvert::msgtexconverted($message);
125: if ($contrib{$idx.':attachmenturl'}) {
126: my ($fname,$ft)
127: =($contrib{$idx.':attachmenturl'}=~/\/(\w+)\.(\w+)$/);
128: $message.='<p>'.&mt('Attachment').': <a href="'.
129: &Apache::lonnet::tokenwrapper(
130: $contrib{$idx.':attachmenturl'}).
131: '"><tt>'.$fname.'.'.$ft.'</tt></a></p>';
132: }
133: if ($message) {
134: if ($hidden) {
135: $message='<font color="#888888">'.$message.'</font>';
136: }
137: my $screenname=&Apache::loncommon::screenname(
138: $contrib{$idx.':sendername'},
139: $contrib{$idx.':senderdomain'});
140: my $plainname=&Apache::loncommon::nickname(
141: $contrib{$idx.':sendername'},
142: $contrib{$idx.':senderdomain'});
143:
144: my $sender=&mt('Anonymous');
145: if ((!$contrib{$idx.':anonymous'}) || ($seeid)) {
146: $sender=&Apache::loncommon::aboutmewrapper(
147: $plainname,
148: $contrib{$idx.':sendername'},
149: $contrib{$idx.':senderdomain'}).' ('.
150: $contrib{$idx.':sendername'}.' at '.
151: $contrib{$idx.':senderdomain'}.')';
152: if ($contrib{$idx.':anonymous'}) {
153: $sender.=' ['.&mt('anonymous').'] '.
154: $screenname;
155: }
156: if ($seeid) {
157: if ($hidden) {
158: $sender.=' <a href="/adm/feedback?unhide='.
159: $symb.':::'.$idx.'">'.&mt('Make Visible').'</a>';
160: } else {
161: $sender.=' <a href="/adm/feedback?hide='.
162: $symb.':::'.$idx.'">'.&mt('Hide').'</a>';
163: }
164: $sender.=' <a href="/adm/feedback?deldisc='.
165: $symb.':::'.$idx.'">'.&mt('Delete').'</a>';
166: }
167: if (&Apache::lonnet::allowed('pch',
168: $ENV{'request.course.id'}.
169: ($ENV{'request.course.sec'}?'/'.$ENV{'request.course.sec'}:''))) {
170: $sender.=' <a href="/adm/feedback?replydisc='.
171: $symb.':::'.$idx.'" '.$target.'>'.&mt('Reply').'</a>';
172: }
173: } else {
174: if ($screenname) {
175: $sender='<i>'.$screenname.'</i>';
176: }
177: }
178: my $vgrlink;
179: if ($viewgrades) {
180: $vgrlink=&Apache::loncommon::submlink('Submissions',
181: $contrib{$idx.':sendername'},$contrib{$idx.':senderdomain'},$symb);
182: }
183: #figure out at what position this needs to print
184: my $thisindex=$idx;
185: if ($ENV{'environment.threadeddiscussion'}) {
186: $thisindex=$origindex.substr('00'.$replies[$depth[$idx]],-2,2);
187: }
188: $alldiscussion{$thisindex}=$idx;
189: $index[$idx]=$thisindex;
190: $discussionitems[$idx]='<p><b>'.$sender.'</b> '.$vgrlink.' ('.
191: localtime($contrib{$idx.':timestamp'}).
192: '):<blockquote>'.$message.
193: '</blockquote></p>';
194: }
195: }
196: }
197: }
198: my $discussion='';
199: if ($visible) {
200: # Print a the discusssion
201: $discussion.='<table bgcolor="#AAAAAA" cellpadding="2" cellspacing="2" border="0">';
202: if ($visible>2) {
203: my $colspan=$maxdepth+1;
204: $discussion.='<tr><td bgcolor="DDDDBB" colspan="'.$colspan.'">'.
205: '<a href="/adm/feedback?threadedon='.$symb.'">'.&mt('Threaded View').'</a> '.
206: '<a href="/adm/feedback?threadedoff='.$symb.'">'.&mt('Chronological View').'</a>'.
207: '</td></tr>';
208: }
209:
210: foreach (sort { $a <=> $b } keys %alldiscussion) {
211: $discussion.="\n<tr>";
212: my $thisdepth=$depth[$alldiscussion{$_}];
213: for (1..$thisdepth) {
214: $discussion.='<td> </td>';
215: }
216: my $colspan=$maxdepth-$thisdepth+1;
217: $discussion.="<td bgcolor='#CCCCCC' colspan='".$colspan."'>".$discussionitems[$alldiscussion{$_}].
218: "</td></tr>";
219: }
220: $discussion.='</table>';
221: }
222: if ($discussiononly) {
223: $discussion.=(<<ENDDISCUSS);
224: <form action="/adm/feedback" method="post" name="mailform" enctype="multipart/form-data">
225: <input type="submit" name="discuss" value="Post Discussion" />
226: <input type="submit" name="anondiscuss" value="Post Anonymous Discussion" />
227: <input type="hidden" name="symb" value="$ressymb" />
228: <input type="hidden" name="sendit" value="true" />
229: <br />
230: <font size="1">Note: in anonymous discussion, your name is visible only to
231: course faculty</font><br />
232: <textarea name="comment" cols="60" rows="10" wrap="hard"></textarea>
233: <p>
234: Attachment (128 KB max size): <input type="file" name="attachment" />
235: </p>
236: </form>
237: ENDDISCUSS
238: $discussion.=&generate_preview_button();
239: } else {
240: if (&Apache::lonnet::allowed('pch',
241: $ENV{'request.course.id'}.
242: ($ENV{'request.course.sec'}?'/'.$ENV{'request.course.sec'}:''))) {
243: $discussion.='<table bgcolor="#BBBBBB"><tr><td><a href="/adm/feedback?replydisc='.
244: $symb.':::" '.$target.'>'.
245: '<img src="/adm/lonMisc/chat.gif" border="0" />'.
246: &mt('Post Discussion').'</a></td></tr></table>';
247: }
248: }
249: return $discussion;
250: }
251:
252: sub mail_screen {
253: my ($r,$feedurl,$options) = @_;
254: my $bodytag=&Apache::loncommon::bodytag('Resource Feedback and Discussion',
255: '','onLoad="window.focus();"');
256: my $title=&Apache::lonnet::gettitle($feedurl);
257: if (!$title) { $title = $feedurl; }
258: my $quote='';
259: if ($ENV{'form.replydisc'}) {
260: my ($symb,$idx)=split(/\:\:\:/,$ENV{'form.replydisc'});
261: my %contrib=&Apache::lonnet::restore($symb,$ENV{'request.course.id'},
262: $ENV{'course.'.$ENV{'request.course.id'}.'.domain'},
263: $ENV{'course.'.$ENV{'request.course.id'}.'.num'});
264: unless (($contrib{'hidden'}=~/\.$idx\./) || ($contrib{'deleted'}=~/\.$idx\./)) {
265: my $message=$contrib{$idx.':message'};
266: $message=~s/\n/\<br \/\>/g;
267: $quote='<blockquote>'.&Apache::lontexconvert::msgtexconverted($message).'</blockquote>';
268: }
269: }
270: my $latexHelp = Apache::loncommon::helpLatexCheatsheet();
271: my $send=&mt('Send');
272: $r->print(<<ENDDOCUMENT);
273: <html>
274: <head>
275: <title>The LearningOnline Network with CAPA</title>
276: <meta http-equiv="pragma" content="no-cache"></meta>
277: <script type="text/javascript">
278: //<!--
279: function gosubmit() {
280: var rec=0;
281: if (typeof(document.mailform.elements.author)!="undefined") {
282: if (document.mailform.elements.author.checked) {
283: rec=1;
284: }
285: }
286: if (typeof(document.mailform.elements.question)!="undefined") {
287: if (document.mailform.elements.question.checked) {
288: rec=1;
289: }
290: }
291: if (typeof(document.mailform.elements.course)!="undefined") {
292: if (document.mailform.elements.course.checked) {
293: rec=1;
294: }
295: }
296: if (typeof(document.mailform.elements.policy)!="undefined") {
297: if (document.mailform.elements.policy.checked) {
298: rec=1;
299: }
300: }
301: if (typeof(document.mailform.elements.discuss)!="undefined") {
302: if (document.mailform.elements.discuss.checked) {
303: rec=1;
304: }
305: }
306: if (typeof(document.mailform.elements.anondiscuss)!="undefined") {
307: if (document.mailform.elements.anondiscuss.checked) {
308: rec=1;
309: }
310: }
311:
312: if (rec) {
313: document.mailform.submit();
314: } else {
315: alert('Please check a feedback type.');
316: }
317: }
318: //-->
319: </script>
320: </head>
321: $bodytag
322: <h2><tt>$title</tt></h2>
323: <form action="/adm/feedback" method="post" name="mailform"
324: enctype="multipart/form-data">
325: <input type="hidden" name="postdata" value="$feedurl" />
326: <input type="hidden" name="replydisc" value="$ENV{'form.replydisc'}" />
327: Please check at least one of the following feedback types:
328: $options<hr />
329: $quote
330: <p>My question/comment/feedback:</p>
331: <p>
332: $latexHelp
333: <textarea name="comment" cols="60" rows="10" wrap="hard">
334: </textarea></p>
335: <p>
336: Attachment (128 KB max size): <input type="file" name="attachment" />
337: </p>
338: <p>
339: <input type="hidden" name="sendit" value="1" />
340: <input type="button" value="$send" onClick='gosubmit();' />
341: </p>
342: </form>
343: ENDDOCUMENT
344: $r->print(&generate_preview_button().'</body></html>');
345: }
346:
347: sub fail_redirect {
348: my ($r,$feedurl) = @_;
349: if ($feedurl=~/^\/adm\//) { $feedurl.='?register=1' };
350: $r->print (<<ENDFAILREDIR);
351: <html>
352: <head><title>Feedback not sent</title>
353: <meta http-equiv="pragma" content="no-cache" />
354: <meta HTTP-EQUIV="Refresh" CONTENT="2; url=$feedurl" />
355: </head>
356: <body bgcolor="#FFFFFF">
357: <img align="right" src="/adm/lonIcons/lonlogos.gif" />
358: <b>Sorry, no recipients ...</b>
359: </body>
360: </html>
361: ENDFAILREDIR
362: }
363:
364: sub redirect_back {
365: my ($r,$feedurl,$typestyle,$sendsomething,$sendposts,$status) = @_;
366: if ($feedurl=~/^\/adm\//) { $feedurl.='?register=1' };
367: $r->print (<<ENDREDIR);
368: <html>
369: <head>
370: <title>Feedback sent</title>
371: <meta http-equiv="pragma" content="no-cache" />
372: <meta HTTP-EQUIV="Refresh" CONTENT="2; url=$feedurl">
373: </head>
374: <body bgcolor="#FFFFFF" onLoad='if (window.name!="loncapaclient") { this.document.reldt.submit(); self.close(); }'>
375: <img align="right" src="/adm/lonIcons/lonlogos.gif" />
376: $typestyle
377: <b>Sent $sendsomething message(s), and $sendposts post(s).</b>
378: <font color="red">$status</font>
379: <form name="reldt" action="$feedurl" target="loncapaclient">
380: </form>
381: </body>
382: </html>
383: ENDREDIR
384: }
385:
386: sub no_redirect_back {
387: my ($r,$feedurl) = @_;
388: $r->print (<<ENDNOREDIR);
389: <html>
390: <head><title>Feedback not sent</title>
391: <meta http-equiv="pragma" content="no-cache" />
392: ENDNOREDIR
393:
394: if ($feedurl!~/^\/adm\/feedback/) {
395: $r->print('<meta HTTP-EQUIV="Refresh" CONTENT="2; url='.$feedurl.'">');
396: }
397:
398: $r->print (<<ENDNOREDIRTWO);
399: </head>
400: <body bgcolor="#FFFFFF" onLoad='if (window.name!="loncapaclient") { self.close(); }'>
401: <img align="right" src="/adm/lonIcons/lonlogos.gif" />
402: <b>Sorry, no feedback possible on this resource ...</b>
403: </body>
404: </html>
405: ENDNOREDIRTWO
406: }
407:
408: sub screen_header {
409: my ($feedurl) = @_;
410: my $msgoptions='';
411: my $discussoptions='';
412: unless ($ENV{'form.replydisc'}) {
413: if (($feedurl=~/^\/res\//) && ($feedurl!~/^\/res\/adm/)) {
414: $msgoptions=
415: '<p><input type="checkbox" name="author" /> '.
416: &mt('Feedback to resource author').'</p>';
417: }
418: if (&feedback_available(1)) {
419: $msgoptions.=
420: '<br /><input type="checkbox" name="question" /> '.
421: &mt('Question about resource content');
422: }
423: if (&feedback_available(0,1)) {
424: $msgoptions.=
425: '<br /><input type="checkbox" name="course" /> '.
426: &mt('Question/Comment/Feedback about course content');
427: }
428: if (&feedback_available(0,0,1)) {
429: $msgoptions.=
430: '<br /><input type="checkbox" name="policy" /> '.
431: &mt('Question/Comment/Feedback about course policy');
432: }
433: }
434: if ($ENV{'request.course.id'}) {
435: if (&Apache::lonnet::allowed('pch',
436: $ENV{'request.course.id'}.
437: ($ENV{'request.course.sec'}?'/'.$ENV{'request.course.sec'}:''))) {
438: $discussoptions='<input type="checkbox" name="discuss" onClick="this.form.anondiscuss.checked=false;" '.
439: ($ENV{'form.replydisc'}?' checked="1"':'').' /> '.
440: &mt('Contribution to course discussion of resource');
441: $discussoptions.='<br /><input type="checkbox" name="anondiscuss" onClick="this.form.discuss.checked=false;" /> '.
442: &mt('Anonymous contribution to course discussion of resource').
443: ' <i>('.&mt('name only visible to course faculty').')</i>';
444: }
445: }
446: if ($msgoptions) { $msgoptions='<h2><img src="/adm/lonMisc/feedback.gif" />'.&mt('Sending Messages').'</h2>'.$msgoptions; }
447: if ($discussoptions) {
448: $discussoptions='<h2><img src="/adm/lonMisc/chat.gif" />'.&mt('Discussion Contributions').'</h2>'.$discussoptions; }
449: return $msgoptions.$discussoptions;
450: }
451:
452: sub resource_output {
453: my ($feedurl) = @_;
454: my $usersaw=&Apache::lonnet::ssi_body($feedurl);
455: $usersaw=~s/\<body[^\>]*\>//gi;
456: $usersaw=~s/\<\/body\>//gi;
457: $usersaw=~s/\<html\>//gi;
458: $usersaw=~s/\<\/html\>//gi;
459: $usersaw=~s/\<head\>//gi;
460: $usersaw=~s/\<\/head\>//gi;
461: $usersaw=~s/action\s*\=/would_be_action\=/gi;
462: return $usersaw;
463: }
464:
465: sub clear_out_html {
466: my ($message,$override)=@_;
467: my $cid=$ENV{'request.course.id'};
468: if (($ENV{"course.$cid.allow_limited_html_in_feedback"} =~ m/yes/i) ||
469: ($override)) {
470: # allows <B> <I> <P> <A> <LI> <OL> <UL> <EM> <BR> <TT> <STRONG>
471: # <BLOCKQUOTE> <DIV .*> <DIV> <IMG>
472: my %html=(B=>1, I=>1, P=>1, A=>1, LI=>1, OL=>1, UL=>1, EM=>1,
473: BR=>1, TT=>1, STRONG=>1, BLOCKQUOTE=>1, DIV=>1, IMG=>1,
474: M=>1);
475:
476: $message =~ s/\<(\/?\s*(\w+)[^\>\<]*)/
477: {($html{uc($2)}&&(length($1)<1000))?"\<$1":"\<$1"}/ge;
478: $message =~ s/(\<?\s*(\w+)[^\<\>]*)\>/
479: {($html{uc($2)}&&(length($1)<1000))?"$1\>":"$1\>"}/ge;
480: } else {
481: $message=~s/\</\<\;/g;
482: $message=~s/\>/\>\;/g;
483: }
484: return $message;
485: }
486:
487: sub assemble_email {
488: my ($feedurl,$message,$prevattempts,$usersaw,$useranswer)=@_;
489: my $email=<<"ENDEMAIL";
490: Refers to <a href="$feedurl">$feedurl</a>
491:
492: $message
493: ENDEMAIL
494: my $citations=<<"ENDCITE";
495: <h2>Previous attempts of student (if applicable)</h2>
496: $prevattempts
497: <br /><hr />
498: <h2>Original screen output (if applicable)</h2>
499: $usersaw
500: <h2>Correct Answer(s) (if applicable)</h2>
501: $useranswer
502: ENDCITE
503: return ($email,$citations);
504: }
505:
506: sub secapply {
507: my $rec=shift;
508: my $defaultflag=shift;
509: $rec=~s/\s+//g;
510: $rec=~s/\@/\:/g;
511: my ($adr,$sections)=($rec=~/^([^\(]+)\(([^\)]+)\)/);
512: if ($sections) {
513: foreach (split(/\;/,$sections)) {
514: if (($_ eq $ENV{'request.course.sec'}) ||
515: ($defaultflag && ($_ eq '*'))) {
516: return $adr;
517: }
518: }
519: } else {
520: return $rec;
521: }
522: return '';
523: }
524:
525: sub decide_receiver {
526: my ($feedurl,$author,$question,$course,$policy,$defaultflag) = @_;
527: my $typestyle='';
528: my %to=();
529: if ($ENV{'form.author'}||$author) {
530: $typestyle.='Submitting as Author Feedback<br>';
531: $feedurl=~/^\/res\/(\w+)\/(\w+)\//;
532: $to{$2.':'.$1}=1;
533: }
534: if ($ENV{'form.question'}||$question) {
535: $typestyle.='Submitting as Question<br>';
536: foreach (split(/\,/,
537: $ENV{'course.'.$ENV{'request.course.id'}.'.question.email'})
538: ) {
539: my $rec=&secapply($_,$defaultflag);
540: if ($rec) { $to{$rec}=1; }
541: }
542: }
543: if ($ENV{'form.course'}||$course) {
544: $typestyle.='Submitting as Comment<br />';
545: foreach (split(/\,/,
546: $ENV{'course.'.$ENV{'request.course.id'}.'.comment.email'})
547: ) {
548: my $rec=&secapply($_,$defaultflag);
549: if ($rec) { $to{$rec}=1; }
550: }
551: }
552: if ($ENV{'form.policy'}||$policy) {
553: $typestyle.='Submitting as Policy Feedback<br />';
554: foreach (split(/\,/,
555: $ENV{'course.'.$ENV{'request.course.id'}.'.policy.email'})
556: ) {
557: my $rec=&secapply($_,$defaultflag);
558: if ($rec) { $to{$rec}=1; }
559: }
560: }
561: if ((scalar(%to) eq '0') && (!$defaultflag)) {
562: ($typestyle,%to)=
563: &decide_receiver($feedurl,$author,$question,$course,$policy,1);
564: }
565: return ($typestyle,%to);
566: }
567:
568: sub feedback_available {
569: my ($question,$course,$policy)=@_;
570: my ($typestyle,%to)=&decide_receiver('',0,$question,$course,$policy);
571: return scalar(%to);
572: }
573:
574: sub send_msg {
575: my ($feedurl,$email,$citations,$attachmenturl,%to)=@_;
576: my $status='';
577: my $sendsomething=0;
578: foreach (keys %to) {
579: if ($_) {
580: my $declutter=&Apache::lonnet::declutter($feedurl);
581: unless (&Apache::lonmsg::user_normal_msg(split(/\:/,$_),
582: 'Feedback ['.$declutter.']',$email,$citations,$feedurl,
583: $attachmenturl)=~/ok/) {
584: $status.='<br />'.&mt('Error sending message to').' '.$_.'<br />';
585: } else {
586: $sendsomething++;
587: }
588: }
589: }
590:
591: my %record=&Apache::lonnet::restore('_feedback');
592: my ($temp)=keys %record;
593: unless ($temp=~/^error\:/) {
594: my %newrecord=();
595: $newrecord{'resource'}=$feedurl;
596: $newrecord{'subnumber'}=$record{'subnumber'}+1;
597: unless (&Apache::lonnet::cstore(\%newrecord,'_feedback') eq 'ok') {
598: $status.='<br />'.&mt('Not registered').'<br />';
599: }
600: }
601:
602: return ($status,$sendsomething);
603: }
604:
605: sub adddiscuss {
606: my ($symb,$email,$anon,$attachmenturl)=@_;
607: my $status='';
608: if (&Apache::lonnet::allowed('pch',$ENV{'request.course.id'}.
609: ($ENV{'request.course.sec'}?'/'.$ENV{'request.course.sec'}:''))) {
610:
611: my %contrib=('message' => $email,
612: 'sendername' => $ENV{'user.name'},
613: 'senderdomain' => $ENV{'user.domain'},
614: 'screenname' => $ENV{'environment.screenname'},
615: 'plainname' => $ENV{'environment.firstname'}.' '.
616: $ENV{'environment.middlename'}.' '.
617: $ENV{'environment.lastname'}.' '.
618: $ENV{'enrironment.generation'},
619: 'attachmenturl'=> $attachmenturl);
620: if ($ENV{'form.replydisc'}) {
621: $contrib{'replyto'}=(split(/\:\:\:/,$ENV{'form.replydisc'}))[1];
622: }
623: if ($anon) {
624: $contrib{'anonymous'}='true';
625: }
626: if (($symb) && ($email)) {
627: $status='Adding to class discussion'.($anon?' (anonymous)':'').': '.
628: &Apache::lonnet::store(\%contrib,$symb,$ENV{'request.course.id'},
629: $ENV{'course.'.$ENV{'request.course.id'}.'.domain'},
630: $ENV{'course.'.$ENV{'request.course.id'}.'.num'});
631: my %storenewentry=($symb => time);
632: $status.='<br />'.&mt('Updating discussion time').': '.
633: &Apache::lonnet::put('discussiontimes',\%storenewentry,
634: $ENV{'course.'.$ENV{'request.course.id'}.'.domain'},
635: $ENV{'course.'.$ENV{'request.course.id'}.'.num'});
636: }
637: my %record=&Apache::lonnet::restore('_discussion');
638: my ($temp)=keys %record;
639: unless ($temp=~/^error\:/) {
640: my %newrecord=();
641: $newrecord{'resource'}=$symb;
642: $newrecord{'subnumber'}=$record{'subnumber'}+1;
643: $status.='<br />'.&mt('Registering').': '.
644: &Apache::lonnet::cstore(\%newrecord,'_discussion');
645: }
646: } else {
647: $status.='Failed.';
648: }
649: return $status.'<br />';
650: }
651:
652: # ----------------------------------------------------------- Preview function
653:
654: sub show_preview {
655: my $r=shift;
656: my $message=&clear_out_html($ENV{'form.comment'});
657: $message=~s/\n/\<br \/\>/g;
658: $message=&Apache::lontexconvert::msgtexconverted($message);
659: $r->print('<table border="2"><tr><td>'.
660: $message.'</td></tr></table>');
661: }
662:
663: sub generate_preview_button {
664: my $pre=&mt("Show Preview");
665: return(<<ENDPREVIEW);
666: <form name="preview" action="/adm/feedback?preview=1" method="post" target="preview">
667: <input type="hidden" name="comment" />
668: <input type="button" value="$pre"
669: onClick="this.form.comment.value=document.mailform.comment.value;this.form.submit();" />
670: </form>
671: ENDPREVIEW
672: }
673:
674: sub handler {
675: my $r = shift;
676: if ($r->header_only) {
677: &Apache::loncommon::content_type($r,'text/html');
678: $r->send_http_header;
679: return OK;
680: }
681:
682: # --------------------------- Get query string for limited number of parameters
683:
684: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
685: ['hide','unhide','deldisc','postdata','preview','replydisc','threadedon','threadedoff']);
686:
687: if (($ENV{'form.hide'}) || ($ENV{'form.unhide'})) {
688: # ----------------------------------------------------------------- Hide/unhide
689: &Apache::loncommon::content_type($r,'text/html');
690: $r->send_http_header;
691:
692: my $entry=$ENV{'form.hide'}?$ENV{'form.hide'}:$ENV{'form.unhide'};
693:
694: my ($symb,$idx)=split(/\:\:\:/,$entry);
695: my ($map,$ind,$url)=&Apache::lonnet::decode_symb($symb);
696:
697: my %contrib=&Apache::lonnet::restore($symb,$ENV{'request.course.id'},
698: $ENV{'course.'.$ENV{'request.course.id'}.'.domain'},
699: $ENV{'course.'.$ENV{'request.course.id'}.'.num'});
700:
701:
702: my $currenthidden=$contrib{'hidden'};
703:
704: if ($ENV{'form.hide'}) {
705: $currenthidden.='.'.$idx.'.';
706: } else {
707: $currenthidden=~s/\.$idx\.//g;
708: }
709: my %newhash=('hidden' => $currenthidden);
710:
711: &Apache::lonnet::store(\%newhash,$symb,$ENV{'request.course.id'},
712: $ENV{'course.'.$ENV{'request.course.id'}.'.domain'},
713: $ENV{'course.'.$ENV{'request.course.id'}.'.num'});
714:
715: &redirect_back($r,&Apache::lonnet::clutter($url),
716: &mt('Changed discussion status').'<br />','0','0');
717: } elsif (($ENV{'form.threadedon'}) || ($ENV{'form.threadedoff'})) {
718: &Apache::loncommon::content_type($r,'text/html');
719: $r->send_http_header;
720: if ($ENV{'form.threadedon'}) {
721: &Apache::lonnet::put('environment',{'threadeddiscussion' => 'on'});
722: &Apache::lonnet::appenv('environment.threadeddiscussion' => 'on');
723: } else {
724: &Apache::lonnet::del('environment',['threadeddiscussion']);
725: &Apache::lonnet::delenv('environment\.threadeddiscussion');
726: }
727: my $symb=$ENV{'form.threadedon'}?$ENV{'form.threadedon'}:$ENV{'form.threadedoff'};
728: my ($map,$ind,$url)=&Apache::lonnet::decode_symb($symb);
729: &redirect_back($r,&Apache::lonnet::clutter($url),
730: &mt('Changed discussion view mode').'<br />','0','0');
731: } elsif ($ENV{'form.deldisc'}) {
732: # --------------------------------------------------------------- Hide for good
733: &Apache::loncommon::content_type($r,'text/html');
734: $r->send_http_header;
735:
736: my $entry=$ENV{'form.deldisc'};
737:
738: my ($symb,$idx)=split(/\:\:\:/,$entry);
739: my ($map,$ind,$url)=&Apache::lonnet::decode_symb($symb);
740:
741: my %contrib=&Apache::lonnet::restore($symb,$ENV{'request.course.id'},
742: $ENV{'course.'.$ENV{'request.course.id'}.'.domain'},
743: $ENV{'course.'.$ENV{'request.course.id'}.'.num'});
744:
745:
746: my $currentdeleted=$contrib{'deleted'};
747:
748: $currentdeleted.='.'.$idx.'.';
749:
750: my %newhash=('deleted' => $currentdeleted);
751:
752: &Apache::lonnet::store(\%newhash,$symb,$ENV{'request.course.id'},
753: $ENV{'course.'.$ENV{'request.course.id'}.'.domain'},
754: $ENV{'course.'.$ENV{'request.course.id'}.'.num'});
755:
756: &redirect_back($r,&Apache::lonnet::clutter($url),
757: &mt('Changed discussion status').'<br />','0','0');
758: } elsif ($ENV{'form.preview'}) {
759: # -------------------------------------------------------- User wants a preview
760: $r->content_type('text/html');
761: $r->send_http_header;
762: &show_preview($r);
763: } else {
764: # ------------------------------------------------------------- Normal feedback
765: my $feedurl=$ENV{'form.postdata'};
766: $feedurl=~s/^http\:\/\///;
767: $feedurl=~s/^$ENV{'SERVER_NAME'}//;
768: $feedurl=~s/^$ENV{'HTTP_HOST'}//;
769: $feedurl=~s/\?.+$//;
770:
771: my $symb;
772: if ($ENV{'form.replydisc'}) {
773: $symb=(split(/\:\:\:/,$ENV{'form.replydisc'}))[0];
774: my ($map,$id,$url)=&Apache::lonnet::decode_symb($symb);
775: $feedurl=&Apache::lonnet::clutter($url);
776: } else {
777: $symb=&Apache::lonnet::symbread($feedurl);
778: }
779: unless ($symb) {
780: $symb=$ENV{'form.symb'};
781: if ($symb) {
782: my ($map,$id,$url)=&Apache::lonnet::decode_symb($symb);
783: $feedurl=&Apache::lonnet::clutter($url);
784: }
785: }
786: my $goahead=1;
787: if ($feedurl=~/\.(problem|exam|quiz|assess|survey|form)$/) {
788: unless ($symb) { $goahead=0; }
789: }
790: # backward compatibility (bulltin boards used to be 'wrapped')
791: if ($feedurl=~m|^/adm/wrapper/adm/.*/bulletinboard$|) {
792: $feedurl=~s|^/adm/wrapper||;
793: }
794: if ($goahead) {
795: # Go ahead with feedback, no ambiguous reference
796: &Apache::loncommon::content_type($r,'text/html');
797: $r->send_http_header;
798:
799: if (
800: (
801: ($feedurl=~m:^/res:) && ($feedurl!~m:^/res/adm:)
802: )
803: ||
804: ($ENV{'request.course.id'} && ($feedurl!~m:^/adm:))
805: ||
806: ($ENV{'request.course.id'} && ($symb=~/^bulletin\_\_\_/))
807: ) {
808: # --------------------------------------------------- Print login screen header
809: unless ($ENV{'form.sendit'}) {
810: my $options=&screen_header($feedurl);
811: if ($options) {
812: &mail_screen($r,$feedurl,$options);
813: } else {
814: &fail_redirect($r,$feedurl);
815: }
816: } else {
817:
818: # Get previous user input
819: my $prevattempts=&Apache::loncommon::get_previous_attempt(
820: $symb,$ENV{'user.name'},$ENV{'user.domain'},
821: $ENV{'request.course.id'});
822:
823: # Get output from resource
824: my $usersaw=&resource_output($feedurl);
825:
826: # Get resource answer (need to allow student to view grades for this to work)
827: &Apache::lonnet::appenv(('allowed.vgr'=>'F'));
828: my $useranswer=&Apache::loncommon::get_student_answers(
829: $symb,$ENV{'user.name'},$ENV{'user.domain'},
830: $ENV{'request.course.id'});
831: &Apache::lonnet::delenv('allowed.vgr');
832: # Get attachments, if any, and not too large
833: my $attachmenturl='';
834: if ($ENV{'form.attachment.filename'}) {
835: unless (length($ENV{'form.attachment'})>131072) {
836: $attachmenturl=&Apache::lonnet::userfileupload('attachment');
837: }
838: }
839: # Filter HTML out of message (could be nasty)
840: my $message=&clear_out_html($ENV{'form.comment'});
841:
842: # Assemble email
843: my ($email,$citations)=&assemble_email($feedurl,$message,$prevattempts,
844: $usersaw,$useranswer);
845:
846: # Who gets this?
847: my ($typestyle,%to) = &decide_receiver($feedurl);
848:
849: # Actually send mail
850: my ($status,$numsent)=&send_msg($feedurl,$email,$citations,
851: $attachmenturl,%to);
852:
853: # Discussion? Store that.
854:
855: my $numpost=0;
856: if ($ENV{'form.discuss'}) {
857: $typestyle.=&adddiscuss($symb,$message,0,$attachmenturl);
858: $numpost++;
859: }
860:
861: if ($ENV{'form.anondiscuss'}) {
862: $typestyle.=&adddiscuss($symb,$message,1,$attachmenturl);
863: $numpost++;
864: }
865:
866:
867: # Receipt screen and redirect back to where came from
868: &redirect_back($r,$feedurl,$typestyle,$numsent,$numpost,$status);
869:
870: }
871: } else {
872: # Unable to give feedback
873: &no_redirect_back($r,$feedurl);
874: }
875: } else {
876: # Ambiguous Problem Resource
877: if ( &Apache::lonnet::mod_perl_version() == 2 ) {
878: &Apache::lonnet::cleanenv();
879: }
880: $r->internal_redirect('/adm/ambiguous');
881: }
882: }
883: return OK;
884: }
885:
886: 1;
887: __END__
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