File:
[LON-CAPA] /
loncom /
interface /
lonfeedback.pm
Revision
1.81:
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Wed May 5 23:04:57 2004 UTC (20 years ago) by
raeburn
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CVS tags:
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Reverting lonbulletin to v 1.120. Time of the previous visit passed in a query string retrieved in lonfeedback instead, so labelling of posts as "NEW" until user leaves board/resource works for both boards and resources.
1: # The LearningOnline Network
2: # Feedback
3: #
4: # $Id: lonfeedback.pm,v 1.81 2004/05/05 23:04:57 raeburn 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:
30: package Apache::lonfeedback;
31:
32: use strict;
33: use Apache::Constants qw(:common);
34: use Apache::lonmsg();
35: use Apache::loncommon();
36: use Apache::lontexconvert();
37: use Apache::lonlocal;
38:
39: sub list_discussion {
40: my ($mode,$status,$symb)=@_;
41: # &Apache::lonnet::logthis("status is $status");
42: if (!($status eq 'CAN_ANSWER' || $status eq 'CANNOT_ANSWER'
43: || $status eq 'OPEN')) {
44: return '';
45: }
46: my $discussiononly=0;
47: if ($mode eq 'board') { $discussiononly=1; }
48: unless ($ENV{'request.course.id'}) { return ''; }
49: my $crs='/'.$ENV{'request.course.id'};
50: if ($ENV{'request.course.sec'}) {
51: $crs.='_'.$ENV{'request.course.sec'};
52: }
53: $crs=~s/\_/\//g;
54: unless ($symb) {
55: $symb=&Apache::lonnet::symbread();
56: }
57: unless ($symb) { return ''; }
58:
59: # backward compatibility (bulletin boards used to be 'wrapped')
60: my $ressymb=$symb;
61: if ($mode eq 'board') {
62: unless ($ressymb =~ m|bulletin___\d+___adm/wrapper|) {
63: $ressymb=~s|(bulletin___\d+___)|$1adm/wrapper|;
64: }
65: }
66:
67: # Get discussion display settings for this discussion
68: my $lastkey = $ressymb.'_lastread';
69: my $showkey = $ressymb.'_showonlyunread';
70: my $visitkey = $ressymb.'_visit';
71: my %dischash = &Apache::lonnet::get('nohist_'.$ENV{'request.course.id'}.'_discuss',[$lastkey,$showkey,$visitkey],$ENV{'user.domain'},$ENV{'user.name'});
72: my $showonlyunread = 0;
73: my $prevread = 0;
74: my $previous = 0;
75: my $visit = 0;
76: my $newpostsflag = 0;
77:
78: # Retain identification of "NEW" posts identified in last display, if continuing 'previous' browsing of posts.
79: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},['previous']);
80: $previous = $ENV{'form.previous'};
81: if ($previous > 0) {
82: $prevread = $previous;
83: } elsif (defined($dischash{$lastkey})) {
84: $prevread = $dischash{$lastkey};
85: }
86:
87: if (defined($dischash{$showkey})) {
88: $showonlyunread = $dischash{$showkey};
89: }
90:
91: if (defined($dischash{$visitkey})) {
92: $visit = $dischash{$visitkey};
93: }
94: $visit ++;
95:
96: my $seeid=&Apache::lonnet::allowed('rin',$crs);
97: my $viewgrades=(&Apache::lonnet::allowed('vgr',$crs)
98: && ($symb=~/\.(problem|exam|quiz|assess|survey|form)$/));
99: my @discussionitems=();
100: my %contrib=&Apache::lonnet::restore($ressymb,$ENV{'request.course.id'},
101: $ENV{'course.'.$ENV{'request.course.id'}.'.domain'},
102: $ENV{'course.'.$ENV{'request.course.id'}.'.num'});
103: my $visible=0;
104: my @depth=();
105: my @original=();
106: my @index=();
107: my @replies=();
108: my %alldiscussion=();
109: my %notshown = ();
110: my $maxdepth=0;
111:
112: my $target='';
113: unless ($ENV{'browser.interface'} eq 'textual' ||
114: $ENV{'environment.remote'} eq 'off' ) {
115: $target='target="LONcom"';
116: }
117:
118: my $now = time;
119: my %discinfo = ();
120: $discinfo{$visitkey} = $visit;
121: $discinfo{$lastkey} = $now;
122:
123: &Apache::lonnet::put('nohist_'.$ENV{'request.course.id'}.'_discuss',\%discinfo,$ENV{'user.domain'},$ENV{'user.name'});
124:
125: if ($contrib{'version'}) {
126: for (my $id=1;$id<=$contrib{'version'};$id++) {
127: my $idx=$id;
128: my $posttime = $contrib{$idx.':timestamp'};
129: if ($prevread > 0 && $prevread <= $posttime) {
130: $newpostsflag = 1;
131: }
132: my $hidden=($contrib{'hidden'}=~/\.$idx\./);
133: my $deleted=($contrib{'deleted'}=~/\.$idx\./);
134: my $origindex='0.';
135: if (($contrib{$idx.':replyto'}) && ($ENV{'environment.threadeddiscussion'})) {
136: # this is a follow-up message
137: $original[$idx]=$original[$contrib{$idx.':replyto'}];
138: $depth[$idx]=$depth[$contrib{$idx.':replyto'}]+1;
139: $origindex=$index[$contrib{$idx.':replyto'}];
140: if ($depth[$idx]>$maxdepth) { $maxdepth=$depth[$idx]; }
141: } else {
142: # this is an original message
143: $original[$idx]=0;
144: $depth[$idx]=0;
145: }
146: if ($replies[$depth[$idx]]) {
147: $replies[$depth[$idx]]++;
148: } else {
149: $replies[$depth[$idx]]=1;
150: }
151: unless ((($hidden) && (!$seeid)) || ($deleted)) {
152: $visible++;
153: my $message=$contrib{$idx.':message'};
154: $message=~s/\n/\<br \/\>/g;
155: $message=&Apache::lontexconvert::msgtexconverted($message);
156: my $subject=$contrib{$idx.':subject'};
157: if (defined($subject)) {
158: $subject=~s/\n/\<br \/\>/g;
159: $subject=&Apache::lontexconvert::msgtexconverted($subject);
160: }
161: if ($contrib{$idx.':attachmenturl'}) {
162: my ($fname,$ft)
163: =($contrib{$idx.':attachmenturl'}=~/\/(\w+)\.(\w+)$/);
164: $message.='<p>'.&mt('Attachment').': <a href="'.
165: &Apache::lonnet::tokenwrapper(
166: $contrib{$idx.':attachmenturl'}).
167: '"><tt>'.$fname.'.'.$ft.'</tt></a></p>';
168: }
169: if ($message) {
170: if ($hidden) {
171: $message='<font color="#888888">'.$message.'</font>';
172: }
173: my $screenname=&Apache::loncommon::screenname(
174: $contrib{$idx.':sendername'},
175: $contrib{$idx.':senderdomain'});
176: my $plainname=&Apache::loncommon::nickname(
177: $contrib{$idx.':sendername'},
178: $contrib{$idx.':senderdomain'});
179:
180: my $sender=&mt('Anonymous');
181: if ((!$contrib{$idx.':anonymous'}) || ($seeid)) {
182: $sender=&Apache::loncommon::aboutmewrapper(
183: $plainname,
184: $contrib{$idx.':sendername'},
185: $contrib{$idx.':senderdomain'}).' ('.
186: $contrib{$idx.':sendername'}.' at '.
187: $contrib{$idx.':senderdomain'}.')';
188: if ($contrib{$idx.':anonymous'}) {
189: $sender.=' ['.&mt('anonymous').'] '.
190: $screenname;
191: }
192: if ($seeid) {
193: if ($hidden) {
194: $sender.=' <a href="/adm/feedback?unhide='.
195: $ressymb.':::'.$idx;
196: if ($newpostsflag) {
197: $sender .= '&previous='.$prevread;
198: }
199: $sender .= '">'.&mt('Make Visible').'</a>';
200: } else {
201: $sender.=' <a href="/adm/feedback?hide='.
202: $ressymb.':::'.$idx;
203: if ($newpostsflag) {
204: $sender .= '&previous='.$prevread;
205: }
206: $sender .= '">'.&mt('Hide').'</a>';
207: }
208: $sender.=' <a href="/adm/feedback?deldisc='.
209: $ressymb.':::'.$idx;
210: if ($newpostsflag) {
211: $sender .= '&previous='.$prevread;
212: }
213: $sender .= '">'.&mt('Delete').'</a>';
214: }
215: } else {
216: if ($screenname) {
217: $sender='<i>'.$screenname.'</i>';
218: }
219: }
220: if (&Apache::lonnet::allowed('pch',
221: $ENV{'request.course.id'}.
222: ($ENV{'request.course.sec'}?'/'.$ENV{'request.course.sec'}:''))) {
223: $sender.=' <a href="/adm/feedback?replydisc='.
224: $ressymb.':::'.$idx;
225: if ($newpostsflag) {
226: $sender .= '&previous='.$prevread;
227: }
228: $sender .= '" '.$target.'>'.&mt('Reply').'</a>';
229: }
230: my $vgrlink;
231: if ($viewgrades) {
232: $vgrlink=&Apache::loncommon::submlink('Submissions',
233: $contrib{$idx.':sendername'},$contrib{$idx.':senderdomain'},$symb);
234: }
235: #figure out at what position this needs to print
236: my $thisindex=$idx;
237: if ($ENV{'environment.threadeddiscussion'}) {
238: $thisindex=$origindex.substr('00'.$replies[$depth[$idx]],-2,2);
239: }
240: $alldiscussion{$thisindex}=$idx;
241: $index[$idx]=$thisindex;
242: my $spansize = 2;
243: if ($showonlyunread && $prevread > $posttime) {
244: $notshown{$idx} = 1;
245: } else {
246: $discussionitems[$idx]='<p><table border="0" width="100%"><tr>';
247: if ($prevread > 0 && $prevread <= $posttime) {
248: $discussionitems[$idx] .= '<td align="left" bgcolor="#FFFFFF"><font color="#FF0000">NEW</font></td>';
249: }
250: $discussionitems[$idx] .= '<td align ="left"> '.
251: '<b>'.$subject.'</b> '.
252: $sender.'</b> '.$vgrlink.' ('.
253: localtime($posttime).')</td></tr>'.
254: '</table><blockquote>'.$message.'</blockquote></p>';
255: }
256: }
257: }
258: }
259: }
260:
261: my $discussion='';
262: if ($visible) {
263: # Print the discusssion
264: $discussion.='<table bgcolor="#AAAAAA" cellpadding="2" cellspacing="2" border="0">';
265: if ($visible>2) {
266: my $colspan=$maxdepth+1;
267: $discussion.='<tr><td bgcolor="DDDDBB" colspan="'.$colspan.'">'.
268: '<table border="0" width="100%" bgcolor="#DDDDBB"><tr><td align="left">'.
269: '<a href="/adm/feedback?threadedon='.$ressymb.'">'.&mt('Threaded View').'</a> '.
270: '<a href="/adm/feedback?threadedoff='.$ressymb.'">'.&mt('Chronological View').'</a> </td>'.
271: '<td align="right"><a href="/adm/feedback?';
272: if ($showonlyunread) {
273: $discussion .= 'allposts='.$ressymb;
274: if ($newpostsflag) {
275: $discussion .= '&previous='.$prevread;
276: }
277: $discussion .='">'.&mt('Show all posts').'?';
278: } else {
279: $discussion .= 'onlyunread='.$ressymb;
280: if ($newpostsflag) {
281: $discussion .= '&previous='.$prevread;
282: }
283: $discussion .= '">'.&mt('Show only unread posts').'?';
284: }
285: $discussion .= '</a> </td></tr></table></td></tr>';
286: }
287: my $numhidden = keys %notshown;
288: if ($numhidden > 0) {
289: my $colspan = $maxdepth+1;
290: $discussion.="\n".'<tr><td bgcolor="#CCCCCC" colspan="'.$colspan.'">'.
291: '<a href="/adm/feedback?allposts='.$ressymb;
292: if ($newpostsflag) {
293: $discussion .= '&previous='.$prevread;
294: }
295: $discussion .= '">'.&mt('Show all posts').'</a> '.&mt('to display').' '.
296: $numhidden.' '.&mt('previously viewed posts').
297: '<br/></td></tr>';
298: }
299: foreach (sort { $a <=> $b } keys %alldiscussion) {
300: unless ($notshown{$alldiscussion{$_}} eq '1') {
301: $discussion.="\n<tr>";
302: my $thisdepth=$depth[$alldiscussion{$_}];
303: for (1..$thisdepth) {
304: $discussion.='<td> </td>';
305: }
306: my $colspan=$maxdepth-$thisdepth+1;
307: $discussion.='<td bgcolor="#CCCCCC" colspan="'.$colspan.'">'.
308: $discussionitems[$alldiscussion{$_}].
309: '</td></tr>';
310: }
311: }
312: $discussion.='</table><br /><br />';
313: }
314: if ($discussiononly) {
315: $discussion.=(<<ENDDISCUSS);
316: <form action="/adm/feedback" method="post" name="mailform" enctype="multipart/form-data">
317: <input type="submit" name="discuss" value="Post Discussion" />
318: <input type="submit" name="anondiscuss" value="Post Anonymous Discussion" />
319: <input type="hidden" name="symb" value="$ressymb" />
320: <input type="hidden" name="sendit" value="true" />
321: <br />
322: <font size="1">Note: in anonymous discussion, your name is visible only to
323: course faculty</font><br />
324: <b>Title:</b> <input type="text" name="subject" value="" size="30" /><br /><br />
325: <textarea name="comment" cols="60" rows="10" wrap="hard"></textarea>
326: <p>
327: Attachment (128 KB max size): <input type="file" name="attachment" />
328: </p>
329: </form>
330: ENDDISCUSS
331: $discussion.=&generate_preview_button();
332: } else {
333: if (&Apache::lonnet::allowed('pch',
334: $ENV{'request.course.id'}.
335: ($ENV{'request.course.sec'}?'/'.$ENV{'request.course.sec'}:''))) {
336: $discussion.='<table bgcolor="#BBBBBB"><tr><td><a href="/adm/feedback?replydisc='.
337: $symb.':::" '.$target.'>'.
338: '<img src="/adm/lonMisc/chat.gif" border="0" />'.
339: &mt('Post Discussion').'</a></td></tr></table>';
340: }
341: }
342: return $discussion;
343: }
344:
345: sub mail_screen {
346: my ($r,$feedurl,$options) = @_;
347: my $bodytag=&Apache::loncommon::bodytag('Resource Feedback and Discussion',
348: '','onLoad="window.focus();"');
349: my $title=&Apache::lonnet::gettitle($feedurl);
350: if (!$title) { $title = $feedurl; }
351: my $quote='';
352: my $subject = '';
353: my $prevtag = '';
354: if ($ENV{'form.replydisc'}) {
355: my ($symb,$idx)=split(/\:\:\:/,$ENV{'form.replydisc'});
356: my %contrib=&Apache::lonnet::restore($symb,$ENV{'request.course.id'},
357: $ENV{'course.'.$ENV{'request.course.id'}.'.domain'},
358: $ENV{'course.'.$ENV{'request.course.id'}.'.num'});
359: unless (($contrib{'hidden'}=~/\.$idx\./) || ($contrib{'deleted'}=~/\.$idx\./)) {
360: my $message=$contrib{$idx.':message'};
361: $message=~s/\n/\<br \/\>/g;
362: $quote='<blockquote>'.&Apache::lontexconvert::msgtexconverted($message).'</blockquote>';
363: if ($idx > 0) {
364: $subject = 'Re: '.$contrib{$idx.':subject'};
365: }
366: }
367: if ($ENV{'form.previous'}) {
368: $prevtag = '<input type="hidden" name="previous" value="'.$ENV{'form.previous'}.'" />';
369: }
370: }
371: my $latexHelp = Apache::loncommon::helpLatexCheatsheet();
372: my $send=&mt('Send');
373: $r->print(<<ENDDOCUMENT);
374: <html>
375: <head>
376: <title>The LearningOnline Network with CAPA</title>
377: <meta http-equiv="pragma" content="no-cache"></meta>
378: <script type="text/javascript">
379: //<!--
380: function gosubmit() {
381: var rec=0;
382: if (typeof(document.mailform.elements.author)!="undefined") {
383: if (document.mailform.elements.author.checked) {
384: rec=1;
385: }
386: }
387: if (typeof(document.mailform.elements.question)!="undefined") {
388: if (document.mailform.elements.question.checked) {
389: rec=1;
390: }
391: }
392: if (typeof(document.mailform.elements.course)!="undefined") {
393: if (document.mailform.elements.course.checked) {
394: rec=1;
395: }
396: }
397: if (typeof(document.mailform.elements.policy)!="undefined") {
398: if (document.mailform.elements.policy.checked) {
399: rec=1;
400: }
401: }
402: if (typeof(document.mailform.elements.discuss)!="undefined") {
403: if (document.mailform.elements.discuss.checked) {
404: rec=1;
405: }
406: }
407: if (typeof(document.mailform.elements.anondiscuss)!="undefined") {
408: if (document.mailform.elements.anondiscuss.checked) {
409: rec=1;
410: }
411: }
412:
413: if (rec) {
414: document.mailform.submit();
415: } else {
416: alert('Please check a feedback type.');
417: }
418: }
419: //-->
420: </script>
421: </head>
422: $bodytag
423: <h2><tt>$title</tt></h2>
424: <form action="/adm/feedback" method="post" name="mailform"
425: enctype="multipart/form-data">
426: $prevtag
427: <input type="hidden" name="postdata" value="$feedurl" />
428: <input type="hidden" name="replydisc" value="$ENV{'form.replydisc'}" />
429: Please check at least one of the following feedback types:
430: $options<hr />
431: $quote
432: <p>My question/comment/feedback:</p>
433: <p>
434: $latexHelp
435: Title: <input type="text" name="subject" size="30" value="$subject" /></p>
436: <p>
437: <textarea name="comment" cols="60" rows="10" wrap="hard">
438: </textarea></p>
439: <p>
440: Attachment (128 KB max size): <input type="file" name="attachment" />
441: </p>
442: <p>
443: <input type="hidden" name="sendit" value="1" />
444: <input type="button" value="$send" onClick='gosubmit();' />
445: </p>
446: </form>
447: ENDDOCUMENT
448: $r->print(&generate_preview_button().'</body></html>');
449: }
450:
451: sub fail_redirect {
452: my ($r,$feedurl) = @_;
453: if ($feedurl=~/^\/adm\//) { $feedurl.='?register=1' };
454: $r->print (<<ENDFAILREDIR);
455: <html>
456: <head><title>Feedback not sent</title>
457: <meta http-equiv="pragma" content="no-cache" />
458: <meta HTTP-EQUIV="Refresh" CONTENT="2; url=$feedurl" />
459: </head>
460: <body bgcolor="#FFFFFF">
461: <img align="right" src="/adm/lonIcons/lonlogos.gif" />
462: <b>Sorry, no recipients ...</b>
463: </body>
464: </html>
465: ENDFAILREDIR
466: }
467:
468: sub redirect_back {
469: my ($r,$feedurl,$typestyle,$sendsomething,$sendposts,$status,$previous) = @_;
470: my $prevtag = '';
471: my $qrystr = '';
472: if ($feedurl=~/^\/adm\//) { $feedurl.='?register=1' };
473: if ($previous > 0) {
474: $qrystr = 'previous='.$previous;
475: if ($feedurl =~ /\?register=1/) {
476: $feedurl .= '&'.$qrystr;
477: } else {
478: $feedurl .= '?'.$qrystr;
479: }
480: $prevtag = '<input type="hidden" name="previous" value="'.$previous.'" />';
481: }
482: $r->print (<<ENDREDIR);
483: <html>
484: <head>
485: <title>Feedback sent</title>
486: <meta http-equiv="pragma" content="no-cache" />
487: <meta HTTP-EQUIV="Refresh" CONTENT="2; url=$feedurl" />
488: </head>
489: <body bgcolor="#FFFFFF" onLoad='if (window.name!="loncapaclient") { this.document.reldt.submit(); self.close(); }'>
490: <img align="right" src="/adm/lonIcons/lonlogos.gif" />
491: $typestyle
492: <b>Sent $sendsomething message(s), and $sendposts post(s).</b>
493: <font color="red">$status</font>
494: <form name="reldt" action="$feedurl" target="loncapaclient">
495: $prevtag
496: </form>
497: </body>
498: </html>
499: ENDREDIR
500: }
501:
502: sub no_redirect_back {
503: my ($r,$feedurl) = @_;
504: $r->print (<<ENDNOREDIR);
505: <html>
506: <head><title>Feedback not sent</title>
507: <meta http-equiv="pragma" content="no-cache" />
508: ENDNOREDIR
509:
510: if ($feedurl!~/^\/adm\/feedback/) {
511: $r->print('<meta HTTP-EQUIV="Refresh" CONTENT="2; url='.$feedurl.'">');
512: }
513:
514: $r->print (<<ENDNOREDIRTWO);
515: </head>
516: <body bgcolor="#FFFFFF" onLoad='if (window.name!="loncapaclient") { self.close(); }'>
517: <img align="right" src="/adm/lonIcons/lonlogos.gif" />
518: <b>Sorry, no feedback possible on this resource ...</b>
519: </body>
520: </html>
521: ENDNOREDIRTWO
522: }
523:
524: sub screen_header {
525: my ($feedurl) = @_;
526: my $msgoptions='';
527: my $discussoptions='';
528: unless ($ENV{'form.replydisc'}) {
529: if (($feedurl=~/^\/res\//) && ($feedurl!~/^\/res\/adm/)) {
530: $msgoptions=
531: '<p><input type="checkbox" name="author" /> '.
532: &mt('Feedback to resource author').'</p>';
533: }
534: if (&feedback_available(1)) {
535: $msgoptions.=
536: '<br /><input type="checkbox" name="question" /> '.
537: &mt('Question about resource content');
538: }
539: if (&feedback_available(0,1)) {
540: $msgoptions.=
541: '<br /><input type="checkbox" name="course" /> '.
542: &mt('Question/Comment/Feedback about course content');
543: }
544: if (&feedback_available(0,0,1)) {
545: $msgoptions.=
546: '<br /><input type="checkbox" name="policy" /> '.
547: &mt('Question/Comment/Feedback about course policy');
548: }
549: }
550: if ($ENV{'request.course.id'}) {
551: if (&Apache::lonnet::allowed('pch',
552: $ENV{'request.course.id'}.
553: ($ENV{'request.course.sec'}?'/'.$ENV{'request.course.sec'}:''))) {
554: $discussoptions='<input type="checkbox" name="discuss" onClick="this.form.anondiscuss.checked=false;" '.
555: ($ENV{'form.replydisc'}?' checked="1"':'').' /> '.
556: &mt('Contribution to course discussion of resource');
557: $discussoptions.='<br /><input type="checkbox" name="anondiscuss" onClick="this.form.discuss.checked=false;" /> '.
558: &mt('Anonymous contribution to course discussion of resource').
559: ' <i>('.&mt('name only visible to course faculty').')</i>';
560: }
561: }
562: if ($msgoptions) { $msgoptions='<h2><img src="/adm/lonMisc/feedback.gif" />'.&mt('Sending Messages').'</h2>'.$msgoptions; }
563: if ($discussoptions) {
564: $discussoptions='<h2><img src="/adm/lonMisc/chat.gif" />'.&mt('Discussion Contributions').'</h2>'.$discussoptions; }
565: return $msgoptions.$discussoptions;
566: }
567:
568: sub resource_output {
569: my ($feedurl) = @_;
570: my $usersaw=&Apache::lonnet::ssi_body($feedurl);
571: $usersaw=~s/\<body[^\>]*\>//gi;
572: $usersaw=~s/\<\/body\>//gi;
573: $usersaw=~s/\<html\>//gi;
574: $usersaw=~s/\<\/html\>//gi;
575: $usersaw=~s/\<head\>//gi;
576: $usersaw=~s/\<\/head\>//gi;
577: $usersaw=~s/action\s*\=/would_be_action\=/gi;
578: return $usersaw;
579: }
580:
581: sub clear_out_html {
582: my ($message,$override)=@_;
583: my $cid=$ENV{'request.course.id'};
584: if (($ENV{"course.$cid.allow_limited_html_in_feedback"} =~ m/yes/i) ||
585: ($override)) {
586: # allows <B> <I> <P> <A> <LI> <OL> <UL> <EM> <BR> <TT> <STRONG>
587: # <BLOCKQUOTE> <DIV .*> <DIV> <IMG>
588: my %html=(B=>1, I=>1, P=>1, A=>1, LI=>1, OL=>1, UL=>1, EM=>1,
589: BR=>1, TT=>1, STRONG=>1, BLOCKQUOTE=>1, DIV=>1, IMG=>1,
590: M=>1);
591:
592: $message =~ s/\<(\/?\s*(\w+)[^\>\<]*)/
593: {($html{uc($2)}&&(length($1)<1000))?"\<$1":"\<$1"}/ge;
594: $message =~ s/(\<?\s*(\w+)[^\<\>]*)\>/
595: {($html{uc($2)}&&(length($1)<1000))?"$1\>":"$1\>"}/ge;
596: } else {
597: $message=~s/\</\<\;/g;
598: $message=~s/\>/\>\;/g;
599: }
600: return $message;
601: }
602:
603: sub assemble_email {
604: my ($feedurl,$message,$prevattempts,$usersaw,$useranswer)=@_;
605: my $email=<<"ENDEMAIL";
606: Refers to <a href="$feedurl">$feedurl</a>
607:
608: $message
609: ENDEMAIL
610: my $citations=<<"ENDCITE";
611: <h2>Previous attempts of student (if applicable)</h2>
612: $prevattempts
613: <br /><hr />
614: <h2>Original screen output (if applicable)</h2>
615: $usersaw
616: <h2>Correct Answer(s) (if applicable)</h2>
617: $useranswer
618: ENDCITE
619: return ($email,$citations);
620: }
621:
622: sub secapply {
623: my $rec=shift;
624: my $defaultflag=shift;
625: $rec=~s/\s+//g;
626: $rec=~s/\@/\:/g;
627: my ($adr,$sections)=($rec=~/^([^\(]+)\(([^\)]+)\)/);
628: if ($sections) {
629: foreach (split(/\;/,$sections)) {
630: if (($_ eq $ENV{'request.course.sec'}) ||
631: ($defaultflag && ($_ eq '*'))) {
632: return $adr;
633: }
634: }
635: } else {
636: return $rec;
637: }
638: return '';
639: }
640:
641: sub decide_receiver {
642: my ($feedurl,$author,$question,$course,$policy,$defaultflag) = @_;
643: my $typestyle='';
644: my %to=();
645: if ($ENV{'form.author'}||$author) {
646: $typestyle.='Submitting as Author Feedback<br>';
647: $feedurl=~/^\/res\/(\w+)\/(\w+)\//;
648: $to{$2.':'.$1}=1;
649: }
650: if ($ENV{'form.question'}||$question) {
651: $typestyle.='Submitting as Question<br>';
652: foreach (split(/\,/,
653: $ENV{'course.'.$ENV{'request.course.id'}.'.question.email'})
654: ) {
655: my $rec=&secapply($_,$defaultflag);
656: if ($rec) { $to{$rec}=1; }
657: }
658: }
659: if ($ENV{'form.course'}||$course) {
660: $typestyle.='Submitting as Comment<br />';
661: foreach (split(/\,/,
662: $ENV{'course.'.$ENV{'request.course.id'}.'.comment.email'})
663: ) {
664: my $rec=&secapply($_,$defaultflag);
665: if ($rec) { $to{$rec}=1; }
666: }
667: }
668: if ($ENV{'form.policy'}||$policy) {
669: $typestyle.='Submitting as Policy Feedback<br />';
670: foreach (split(/\,/,
671: $ENV{'course.'.$ENV{'request.course.id'}.'.policy.email'})
672: ) {
673: my $rec=&secapply($_,$defaultflag);
674: if ($rec) { $to{$rec}=1; }
675: }
676: }
677: if ((scalar(%to) eq '0') && (!$defaultflag)) {
678: ($typestyle,%to)=
679: &decide_receiver($feedurl,$author,$question,$course,$policy,1);
680: }
681: return ($typestyle,%to);
682: }
683:
684: sub feedback_available {
685: my ($question,$course,$policy)=@_;
686: my ($typestyle,%to)=&decide_receiver('',0,$question,$course,$policy);
687: return scalar(%to);
688: }
689:
690: sub send_msg {
691: my ($feedurl,$email,$citations,$attachmenturl,%to)=@_;
692: my $status='';
693: my $sendsomething=0;
694: foreach (keys %to) {
695: if ($_) {
696: my $declutter=&Apache::lonnet::declutter($feedurl);
697: unless (&Apache::lonmsg::user_normal_msg(split(/\:/,$_),
698: 'Feedback ['.$declutter.']',$email,$citations,$feedurl,
699: $attachmenturl)=~/ok/) {
700: $status.='<br />'.&mt('Error sending message to').' '.$_.'<br />';
701: } else {
702: $sendsomething++;
703: }
704: }
705: }
706:
707: my %record=&Apache::lonnet::restore('_feedback');
708: my ($temp)=keys %record;
709: unless ($temp=~/^error\:/) {
710: my %newrecord=();
711: $newrecord{'resource'}=$feedurl;
712: $newrecord{'subnumber'}=$record{'subnumber'}+1;
713: unless (&Apache::lonnet::cstore(\%newrecord,'_feedback') eq 'ok') {
714: $status.='<br />'.&mt('Not registered').'<br />';
715: }
716: }
717:
718: return ($status,$sendsomething);
719: }
720:
721: sub adddiscuss {
722: my ($symb,$email,$anon,$attachmenturl,$subject)=@_;
723: my $status='';
724: if (&Apache::lonnet::allowed('pch',$ENV{'request.course.id'}.
725: ($ENV{'request.course.sec'}?'/'.$ENV{'request.course.sec'}:''))) {
726:
727: my %contrib=('message' => $email,
728: 'sendername' => $ENV{'user.name'},
729: 'senderdomain' => $ENV{'user.domain'},
730: 'screenname' => $ENV{'environment.screenname'},
731: 'plainname' => $ENV{'environment.firstname'}.' '.
732: $ENV{'environment.middlename'}.' '.
733: $ENV{'environment.lastname'}.' '.
734: $ENV{'enrironment.generation'},
735: 'attachmenturl'=> $attachmenturl,
736: 'subject' => $subject);
737: if ($ENV{'form.replydisc'}) {
738: $contrib{'replyto'}=(split(/\:\:\:/,$ENV{'form.replydisc'}))[1];
739: }
740: if ($anon) {
741: $contrib{'anonymous'}='true';
742: }
743: if (($symb) && ($email)) {
744: $status='Adding to class discussion'.($anon?' (anonymous)':'').': '.
745: &Apache::lonnet::store(\%contrib,$symb,$ENV{'request.course.id'},
746: $ENV{'course.'.$ENV{'request.course.id'}.'.domain'},
747: $ENV{'course.'.$ENV{'request.course.id'}.'.num'});
748: my %storenewentry=($symb => time);
749: $status.='<br />'.&mt('Updating discussion time').': '.
750: &Apache::lonnet::put('discussiontimes',\%storenewentry,
751: $ENV{'course.'.$ENV{'request.course.id'}.'.domain'},
752: $ENV{'course.'.$ENV{'request.course.id'}.'.num'});
753: }
754: my %record=&Apache::lonnet::restore('_discussion');
755: my ($temp)=keys %record;
756: unless ($temp=~/^error\:/) {
757: my %newrecord=();
758: $newrecord{'resource'}=$symb;
759: $newrecord{'subnumber'}=$record{'subnumber'}+1;
760: $status.='<br />'.&mt('Registering').': '.
761: &Apache::lonnet::cstore(\%newrecord,'_discussion');
762: }
763: } else {
764: $status.='Failed.';
765: }
766: return $status.'<br />';
767: }
768:
769: # ----------------------------------------------------------- Preview function
770:
771: sub show_preview {
772: my $r=shift;
773: my $message=&clear_out_html($ENV{'form.comment'});
774: $message=~s/\n/\<br \/\>/g;
775: $message=&Apache::lontexconvert::msgtexconverted($message);
776: my $subject=&clear_out_html($ENV{'form.subject'});
777: $subject=~s/\n/\<br \/\>/g;
778: $subject=&Apache::lontexconvert::msgtexconverted($subject);
779: $r->print('<table border="2"><tr><td>'.
780: '<b>Subject:</b> '.$subject.'<br /><br />'.
781: $message.'</td></tr></table>');
782: }
783:
784: sub generate_preview_button {
785: my $pre=&mt("Show Preview");
786: return(<<ENDPREVIEW);
787: <form name="preview" action="/adm/feedback?preview=1" method="post" target="preview">
788: <input type="hidden" name="subject">
789: <input type="hidden" name="comment" />
790: <input type="button" value="$pre"
791: onClick="this.form.comment.value=document.mailform.comment.value;this.form.subject.value=document.mailform.subject.value;this.form.submit();" />
792: </form>
793: ENDPREVIEW
794: }
795:
796: sub handler {
797: my $r = shift;
798: if ($r->header_only) {
799: &Apache::loncommon::content_type($r,'text/html');
800: $r->send_http_header;
801: return OK;
802: }
803:
804: # --------------------------- Get query string for limited number of parameters
805:
806: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
807: ['hide','unhide','deldisc','postdata','preview','replydisc','threadedon','threadedoff','onlyunread','allposts','previous']);
808:
809: if (($ENV{'form.allposts'}) || ($ENV{'form.onlyunread'})) {
810: # ----------------------------------------------------------------- Modify display setting for this discussion
811: &Apache::loncommon::content_type($r,'text/html');
812: $r->send_http_header;
813: my $symb=$ENV{'form.allposts'}?$ENV{'form.allposts'}:$ENV{'form.onlyunread'};
814: my ($map,$ind,$url)=&Apache::lonnet::decode_symb($symb);
815: my %contrib=&Apache::lonnet::restore($symb,$ENV{'request.course.id'},
816: $ENV{'course.'.$ENV{'request.course.id'}.'.domain'},
817: $ENV{'course.'.$ENV{'request.course.id'}.'.num'});
818: my %readinghash = ();
819:
820: if ($contrib{'version'}) {
821: if ($ENV{'form.allposts'}) {
822: $readinghash{$symb.'_showonlyunread'} = 0;
823: } elsif ($ENV{'form.onlyunread'}) {
824: $readinghash{$symb.'_showonlyunread'} = 1;
825: }
826: &Apache::lonnet::put('nohist_'.$ENV{'request.course.id'}.'_discuss',\%readinghash,$ENV{'user.domain'},$ENV{'user.name'});
827: }
828: &redirect_back($r,&Apache::lonnet::clutter($url),&mt('Changed reading status').'<br />','0','0','',$ENV{'form.previous'});
829: return OK;
830: } elsif (($ENV{'form.hide'}) || ($ENV{'form.unhide'})) {
831: # ----------------------------------------------------------------- Hide/unhide
832: &Apache::loncommon::content_type($r,'text/html');
833: $r->send_http_header;
834:
835: my $entry=$ENV{'form.hide'}?$ENV{'form.hide'}:$ENV{'form.unhide'};
836:
837: my ($symb,$idx)=split(/\:\:\:/,$entry);
838: my ($map,$ind,$url)=&Apache::lonnet::decode_symb($symb);
839:
840: my %contrib=&Apache::lonnet::restore($symb,$ENV{'request.course.id'},
841: $ENV{'course.'.$ENV{'request.course.id'}.'.domain'},
842: $ENV{'course.'.$ENV{'request.course.id'}.'.num'});
843:
844:
845: my $currenthidden=$contrib{'hidden'};
846:
847: if ($ENV{'form.hide'}) {
848: $currenthidden.='.'.$idx.'.';
849: } else {
850: $currenthidden=~s/\.$idx\.//g;
851: }
852: my %newhash=('hidden' => $currenthidden);
853:
854: &Apache::lonnet::store(\%newhash,$symb,$ENV{'request.course.id'},
855: $ENV{'course.'.$ENV{'request.course.id'}.'.domain'},
856: $ENV{'course.'.$ENV{'request.course.id'}.'.num'});
857:
858: &redirect_back($r,&Apache::lonnet::clutter($url),
859: &mt('Changed discussion status').'<br />','0','0','',$ENV{'form.previous'});
860: } elsif (($ENV{'form.threadedon'}) || ($ENV{'form.threadedoff'})) {
861: &Apache::loncommon::content_type($r,'text/html');
862: $r->send_http_header;
863: if ($ENV{'form.threadedon'}) {
864: &Apache::lonnet::put('environment',{'threadeddiscussion' => 'on'});
865: &Apache::lonnet::appenv('environment.threadeddiscussion' => 'on');
866: } else {
867: &Apache::lonnet::del('environment',['threadeddiscussion']);
868: &Apache::lonnet::delenv('environment\.threadeddiscussion');
869: }
870: my $symb=$ENV{'form.threadedon'}?$ENV{'form.threadedon'}:$ENV{'form.threadedoff'};
871: my ($map,$ind,$url)=&Apache::lonnet::decode_symb($symb);
872: &redirect_back($r,&Apache::lonnet::clutter($url),
873: &mt('Changed discussion view mode').'<br />','0','0','',$ENV{'form.previous'});
874: } elsif ($ENV{'form.deldisc'}) {
875: # --------------------------------------------------------------- Hide for good
876: &Apache::loncommon::content_type($r,'text/html');
877: $r->send_http_header;
878:
879: my $entry=$ENV{'form.deldisc'};
880:
881: my ($symb,$idx)=split(/\:\:\:/,$entry);
882: my ($map,$ind,$url)=&Apache::lonnet::decode_symb($symb);
883:
884: my %contrib=&Apache::lonnet::restore($symb,$ENV{'request.course.id'},
885: $ENV{'course.'.$ENV{'request.course.id'}.'.domain'},
886: $ENV{'course.'.$ENV{'request.course.id'}.'.num'});
887:
888:
889: my $currentdeleted=$contrib{'deleted'};
890:
891: $currentdeleted.='.'.$idx.'.';
892:
893: my %newhash=('deleted' => $currentdeleted);
894:
895: &Apache::lonnet::store(\%newhash,$symb,$ENV{'request.course.id'},
896: $ENV{'course.'.$ENV{'request.course.id'}.'.domain'},
897: $ENV{'course.'.$ENV{'request.course.id'}.'.num'});
898:
899: &redirect_back($r,&Apache::lonnet::clutter($url),
900: &mt('Changed discussion status').'<br />','0','0','',$ENV{'form.previous'});
901: } elsif ($ENV{'form.preview'}) {
902: # -------------------------------------------------------- User wants a preview
903: $r->content_type('text/html');
904: $r->send_http_header;
905: &show_preview($r);
906: } else {
907: # ------------------------------------------------------------- Normal feedback
908: my $feedurl=$ENV{'form.postdata'};
909: $feedurl=~s/^http\:\/\///;
910: $feedurl=~s/^$ENV{'SERVER_NAME'}//;
911: $feedurl=~s/^$ENV{'HTTP_HOST'}//;
912: $feedurl=~s/\?.+$//;
913:
914: my $symb;
915: if ($ENV{'form.replydisc'}) {
916: $symb=(split(/\:\:\:/,$ENV{'form.replydisc'}))[0];
917: my ($map,$id,$url)=&Apache::lonnet::decode_symb($symb);
918: $feedurl=&Apache::lonnet::clutter($url);
919: } else {
920: $symb=&Apache::lonnet::symbread($feedurl);
921: }
922: unless ($symb) {
923: $symb=$ENV{'form.symb'};
924: if ($symb) {
925: my ($map,$id,$url)=&Apache::lonnet::decode_symb($symb);
926: $feedurl=&Apache::lonnet::clutter($url);
927: }
928: }
929: my $goahead=1;
930: if ($feedurl=~/\.(problem|exam|quiz|assess|survey|form)$/) {
931: unless ($symb) { $goahead=0; }
932: }
933: # backward compatibility (bulltin boards used to be 'wrapped')
934: if ($feedurl=~m|^/adm/wrapper/adm/.*/bulletinboard$|) {
935: $feedurl=~s|^/adm/wrapper||;
936: }
937: if ($goahead) {
938: # Go ahead with feedback, no ambiguous reference
939: &Apache::loncommon::content_type($r,'text/html');
940: $r->send_http_header;
941:
942: if (
943: (
944: ($feedurl=~m:^/res:) && ($feedurl!~m:^/res/adm:)
945: )
946: ||
947: ($ENV{'request.course.id'} && ($feedurl!~m:^/adm:))
948: ||
949: ($ENV{'request.course.id'} && ($symb=~/^bulletin\_\_\_/))
950: ) {
951: # --------------------------------------------------- Print login screen header
952: unless ($ENV{'form.sendit'}) {
953: my $options=&screen_header($feedurl);
954: if ($options) {
955: &mail_screen($r,$feedurl,$options);
956: } else {
957: &fail_redirect($r,$feedurl);
958: }
959: } else {
960:
961: # Get previous user input
962: my $prevattempts=&Apache::loncommon::get_previous_attempt(
963: $symb,$ENV{'user.name'},$ENV{'user.domain'},
964: $ENV{'request.course.id'});
965:
966: # Get output from resource
967: my $usersaw=&resource_output($feedurl);
968:
969: # Get resource answer (need to allow student to view grades for this to work)
970: &Apache::lonnet::appenv(('allowed.vgr'=>'F'));
971: my $useranswer=&Apache::loncommon::get_student_answers(
972: $symb,$ENV{'user.name'},$ENV{'user.domain'},
973: $ENV{'request.course.id'});
974: &Apache::lonnet::delenv('allowed.vgr');
975: # Get attachments, if any, and not too large
976: my $attachmenturl='';
977: if ($ENV{'form.attachment.filename'}) {
978: unless (length($ENV{'form.attachment'})>131072) {
979: $attachmenturl=&Apache::lonnet::userfileupload('attachment');
980: }
981: }
982: # Filter HTML out of message (could be nasty)
983: my $message=&clear_out_html($ENV{'form.comment'});
984:
985: # Assemble email
986: my ($email,$citations)=&assemble_email($feedurl,$message,$prevattempts,
987: $usersaw,$useranswer);
988:
989: # Who gets this?
990: my ($typestyle,%to) = &decide_receiver($feedurl);
991:
992: # Actually send mail
993: my ($status,$numsent)=&send_msg($feedurl,$email,$citations,
994: $attachmenturl,%to);
995:
996: # Discussion? Store that.
997:
998: my $numpost=0;
999: if ($ENV{'form.discuss'}) {
1000: my $subject = &clear_out_html($ENV{'form.subject'});
1001: $typestyle.=&adddiscuss($symb,$message,0,$attachmenturl,$subject);
1002: $numpost++;
1003: }
1004:
1005: if ($ENV{'form.anondiscuss'}) {
1006: my $subject = &clear_out_html($ENV{'form.subject'});
1007: $typestyle.=&adddiscuss($symb,$message,1,$attachmenturl,$subject);
1008: $numpost++;
1009: }
1010:
1011:
1012: # Receipt screen and redirect back to where came from
1013: &redirect_back($r,$feedurl,$typestyle,$numsent,$numpost,$status,$ENV{'form.previous'});
1014:
1015: }
1016: } else {
1017: # Unable to give feedback
1018: &no_redirect_back($r,$feedurl);
1019: }
1020: } else {
1021: # Ambiguous Problem Resource
1022: if ( &Apache::lonnet::mod_perl_version() == 2 ) {
1023: &Apache::lonnet::cleanenv();
1024: }
1025: $r->internal_redirect('/adm/ambiguous');
1026: }
1027: }
1028: return OK;
1029: }
1030:
1031: 1;
1032: __END__
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