1: # The LearningOnline Network
2: # Feedback
3: #
4: # $Id: lonfeedback.pm,v 1.82 2004/05/07 12:03:53 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:
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 ($fname)
163: =($contrib{$idx.':attachmenturl'}=~m|/([^/]+)$|);
164: &Apache::lonnet::allowuploaded('/adm/feedback',
165: $contrib{$idx.':attachmenturl'});
166: $message.='<p>'.&mt('Attachment').
167: ': <a href="'.$contrib{$idx.':attachmenturl'}.'"><tt>'.
168: $fname.'</tt></a></p>';
169: }
170: if ($message) {
171: if ($hidden) {
172: $message='<font color="#888888">'.$message.'</font>';
173: }
174: my $screenname=&Apache::loncommon::screenname(
175: $contrib{$idx.':sendername'},
176: $contrib{$idx.':senderdomain'});
177: my $plainname=&Apache::loncommon::nickname(
178: $contrib{$idx.':sendername'},
179: $contrib{$idx.':senderdomain'});
180:
181: my $sender=&mt('Anonymous');
182: if ((!$contrib{$idx.':anonymous'}) || ($seeid)) {
183: $sender=&Apache::loncommon::aboutmewrapper(
184: $plainname,
185: $contrib{$idx.':sendername'},
186: $contrib{$idx.':senderdomain'}).' ('.
187: $contrib{$idx.':sendername'}.' at '.
188: $contrib{$idx.':senderdomain'}.')';
189: if ($contrib{$idx.':anonymous'}) {
190: $sender.=' ['.&mt('anonymous').'] '.
191: $screenname;
192: }
193: if ($seeid) {
194: if ($hidden) {
195: $sender.=' <a href="/adm/feedback?unhide='.
196: $ressymb.':::'.$idx;
197: if ($newpostsflag) {
198: $sender .= '&previous='.$prevread;
199: }
200: $sender .= '">'.&mt('Make Visible').'</a>';
201: } else {
202: $sender.=' <a href="/adm/feedback?hide='.
203: $ressymb.':::'.$idx;
204: if ($newpostsflag) {
205: $sender .= '&previous='.$prevread;
206: }
207: $sender .= '">'.&mt('Hide').'</a>';
208: }
209: $sender.=' <a href="/adm/feedback?deldisc='.
210: $ressymb.':::'.$idx;
211: if ($newpostsflag) {
212: $sender .= '&previous='.$prevread;
213: }
214: $sender .= '">'.&mt('Delete').'</a>';
215: }
216: } else {
217: if ($screenname) {
218: $sender='<i>'.$screenname.'</i>';
219: }
220: }
221: if (&Apache::lonnet::allowed('pch',
222: $ENV{'request.course.id'}.
223: ($ENV{'request.course.sec'}?'/'.$ENV{'request.course.sec'}:''))) {
224: $sender.=' <a href="/adm/feedback?replydisc='.
225: $ressymb.':::'.$idx;
226: if ($newpostsflag) {
227: $sender .= '&previous='.$prevread;
228: }
229: $sender .= '" '.$target.'>'.&mt('Reply').'</a>';
230: }
231: my $vgrlink;
232: if ($viewgrades) {
233: $vgrlink=&Apache::loncommon::submlink('Submissions',
234: $contrib{$idx.':sendername'},$contrib{$idx.':senderdomain'},$symb);
235: }
236: #figure out at what position this needs to print
237: my $thisindex=$idx;
238: if ($ENV{'environment.threadeddiscussion'}) {
239: $thisindex=$origindex.substr('00'.$replies[$depth[$idx]],-2,2);
240: }
241: $alldiscussion{$thisindex}=$idx;
242: $index[$idx]=$thisindex;
243: my $spansize = 2;
244: if ($showonlyunread && $prevread > $posttime) {
245: $notshown{$idx} = 1;
246: } else {
247: $discussionitems[$idx]='<p><table border="0" width="100%"><tr>';
248: if ($prevread > 0 && $prevread <= $posttime) {
249: $discussionitems[$idx] .= '<td align="left" bgcolor="#FFFFFF"><font color="#FF0000">NEW</font></td>';
250: }
251: $discussionitems[$idx] .= '<td align ="left"> '.
252: '<b>'.$subject.'</b> '.
253: $sender.'</b> '.$vgrlink.' ('.
254: localtime($posttime).')</td></tr>'.
255: '</table><blockquote>'.$message.'</blockquote></p>';
256: }
257: }
258: }
259: }
260: }
261:
262: my $discussion='';
263: if ($visible) {
264: # Print the discusssion
265: $discussion.='<table bgcolor="#AAAAAA" cellpadding="2" cellspacing="2" border="0">';
266: if ($visible>2) {
267: my $colspan=$maxdepth+1;
268: $discussion.='<tr><td bgcolor="DDDDBB" colspan="'.$colspan.'">'.
269: '<table border="0" width="100%" bgcolor="#DDDDBB"><tr><td align="left">'.
270: '<a href="/adm/feedback?threadedon='.$ressymb.'">'.&mt('Threaded View').'</a> '.
271: '<a href="/adm/feedback?threadedoff='.$ressymb.'">'.&mt('Chronological View').'</a> </td>'.
272: '<td align="right"><a href="/adm/feedback?';
273: if ($showonlyunread) {
274: $discussion .= 'allposts='.$ressymb;
275: if ($newpostsflag) {
276: $discussion .= '&previous='.$prevread;
277: }
278: $discussion .='">'.&mt('Show all posts').'?';
279: } else {
280: $discussion .= 'onlyunread='.$ressymb;
281: if ($newpostsflag) {
282: $discussion .= '&previous='.$prevread;
283: }
284: $discussion .= '">'.&mt('Show only unread posts').'?';
285: }
286: $discussion .= '</a> </td></tr></table></td></tr>';
287: }
288: my $numhidden = keys %notshown;
289: if ($numhidden > 0) {
290: my $colspan = $maxdepth+1;
291: $discussion.="\n".'<tr><td bgcolor="#CCCCCC" colspan="'.$colspan.'">'.
292: '<a href="/adm/feedback?allposts='.$ressymb;
293: if ($newpostsflag) {
294: $discussion .= '&previous='.$prevread;
295: }
296: $discussion .= '">'.&mt('Show all posts').'</a> '.&mt('to display').' '.
297: $numhidden.' '.&mt('previously viewed posts').
298: '<br/></td></tr>';
299: }
300: foreach (sort { $a <=> $b } keys %alldiscussion) {
301: unless ($notshown{$alldiscussion{$_}} eq '1') {
302: $discussion.="\n<tr>";
303: my $thisdepth=$depth[$alldiscussion{$_}];
304: for (1..$thisdepth) {
305: $discussion.='<td> </td>';
306: }
307: my $colspan=$maxdepth-$thisdepth+1;
308: $discussion.='<td bgcolor="#CCCCCC" colspan="'.$colspan.'">'.
309: $discussionitems[$alldiscussion{$_}].
310: '</td></tr>';
311: }
312: }
313: $discussion.='</table><br /><br />';
314: }
315: if ($discussiononly) {
316: $discussion.=(<<ENDDISCUSS);
317: <form action="/adm/feedback" method="post" name="mailform" enctype="multipart/form-data">
318: <input type="submit" name="discuss" value="Post Discussion" />
319: <input type="submit" name="anondiscuss" value="Post Anonymous Discussion" />
320: <input type="hidden" name="symb" value="$ressymb" />
321: <input type="hidden" name="sendit" value="true" />
322: <br />
323: <font size="1">Note: in anonymous discussion, your name is visible only to
324: course faculty</font><br />
325: <b>Title:</b> <input type="text" name="subject" value="" size="30" /><br /><br />
326: <textarea name="comment" cols="60" rows="10" wrap="hard"></textarea>
327: <p>
328: Attachment (128 KB max size): <input type="file" name="attachment" />
329: </p>
330: </form>
331: ENDDISCUSS
332: $discussion.=&generate_preview_button();
333: } else {
334: if (&Apache::lonnet::allowed('pch',
335: $ENV{'request.course.id'}.
336: ($ENV{'request.course.sec'}?'/'.$ENV{'request.course.sec'}:''))) {
337: $discussion.='<table bgcolor="#BBBBBB"><tr><td><a href="/adm/feedback?replydisc='.
338: $symb.':::" '.$target.'>'.
339: '<img src="/adm/lonMisc/chat.gif" border="0" />'.
340: &mt('Post Discussion').'</a></td></tr></table>';
341: }
342: }
343: return $discussion;
344: }
345:
346: sub mail_screen {
347: my ($r,$feedurl,$options) = @_;
348: my $bodytag=&Apache::loncommon::bodytag('Resource Feedback and Discussion',
349: '','onLoad="window.focus();"');
350: my $title=&Apache::lonnet::gettitle($feedurl);
351: if (!$title) { $title = $feedurl; }
352: my $quote='';
353: my $subject = '';
354: my $prevtag = '';
355: if ($ENV{'form.replydisc'}) {
356: my ($symb,$idx)=split(/\:\:\:/,$ENV{'form.replydisc'});
357: my %contrib=&Apache::lonnet::restore($symb,$ENV{'request.course.id'},
358: $ENV{'course.'.$ENV{'request.course.id'}.'.domain'},
359: $ENV{'course.'.$ENV{'request.course.id'}.'.num'});
360: unless (($contrib{'hidden'}=~/\.$idx\./) || ($contrib{'deleted'}=~/\.$idx\./)) {
361: my $message=$contrib{$idx.':message'};
362: $message=~s/\n/\<br \/\>/g;
363: $quote='<blockquote>'.&Apache::lontexconvert::msgtexconverted($message).'</blockquote>';
364: if ($idx > 0) {
365: $subject = 'Re: '.$contrib{$idx.':subject'};
366: }
367: }
368: if ($ENV{'form.previous'}) {
369: $prevtag = '<input type="hidden" name="previous" value="'.$ENV{'form.previous'}.'" />';
370: }
371: }
372: my $latexHelp = Apache::loncommon::helpLatexCheatsheet();
373: my $send=&mt('Send');
374: $r->print(<<ENDDOCUMENT);
375: <html>
376: <head>
377: <title>The LearningOnline Network with CAPA</title>
378: <meta http-equiv="pragma" content="no-cache"></meta>
379: <script type="text/javascript">
380: //<!--
381: function gosubmit() {
382: var rec=0;
383: if (typeof(document.mailform.elements.author)!="undefined") {
384: if (document.mailform.elements.author.checked) {
385: rec=1;
386: }
387: }
388: if (typeof(document.mailform.elements.question)!="undefined") {
389: if (document.mailform.elements.question.checked) {
390: rec=1;
391: }
392: }
393: if (typeof(document.mailform.elements.course)!="undefined") {
394: if (document.mailform.elements.course.checked) {
395: rec=1;
396: }
397: }
398: if (typeof(document.mailform.elements.policy)!="undefined") {
399: if (document.mailform.elements.policy.checked) {
400: rec=1;
401: }
402: }
403: if (typeof(document.mailform.elements.discuss)!="undefined") {
404: if (document.mailform.elements.discuss.checked) {
405: rec=1;
406: }
407: }
408: if (typeof(document.mailform.elements.anondiscuss)!="undefined") {
409: if (document.mailform.elements.anondiscuss.checked) {
410: rec=1;
411: }
412: }
413:
414: if (rec) {
415: document.mailform.submit();
416: } else {
417: alert('Please check a feedback type.');
418: }
419: }
420: //-->
421: </script>
422: </head>
423: $bodytag
424: <h2><tt>$title</tt></h2>
425: <form action="/adm/feedback" method="post" name="mailform"
426: enctype="multipart/form-data">
427: $prevtag
428: <input type="hidden" name="postdata" value="$feedurl" />
429: <input type="hidden" name="replydisc" value="$ENV{'form.replydisc'}" />
430: Please check at least one of the following feedback types:
431: $options<hr />
432: $quote
433: <p>My question/comment/feedback:</p>
434: <p>
435: $latexHelp
436: Title: <input type="text" name="subject" size="30" value="$subject" /></p>
437: <p>
438: <textarea name="comment" cols="60" rows="10" wrap="hard">
439: </textarea></p>
440: <p>
441: Attachment (128 KB max size): <input type="file" name="attachment" />
442: </p>
443: <p>
444: <input type="hidden" name="sendit" value="1" />
445: <input type="button" value="$send" onClick='gosubmit();' />
446: </p>
447: </form>
448: ENDDOCUMENT
449: $r->print(&generate_preview_button().'</body></html>');
450: }
451:
452: sub fail_redirect {
453: my ($r,$feedurl) = @_;
454: if ($feedurl=~/^\/adm\//) { $feedurl.='?register=1' };
455: $r->print (<<ENDFAILREDIR);
456: <html>
457: <head><title>Feedback not sent</title>
458: <meta http-equiv="pragma" content="no-cache" />
459: <meta HTTP-EQUIV="Refresh" CONTENT="2; url=$feedurl" />
460: </head>
461: <body bgcolor="#FFFFFF">
462: <img align="right" src="/adm/lonIcons/lonlogos.gif" />
463: <b>Sorry, no recipients ...</b>
464: </body>
465: </html>
466: ENDFAILREDIR
467: }
468:
469: sub redirect_back {
470: my ($r,$feedurl,$typestyle,$sendsomething,$sendposts,$status,$previous) = @_;
471: my $prevtag = '';
472: my $qrystr = '';
473: if ($feedurl=~/^\/adm\//) { $feedurl.='?register=1' };
474: if ($previous > 0) {
475: $qrystr = 'previous='.$previous;
476: if ($feedurl =~ /\?register=1/) {
477: $feedurl .= '&'.$qrystr;
478: } else {
479: $feedurl .= '?'.$qrystr;
480: }
481: $prevtag = '<input type="hidden" name="previous" value="'.$previous.'" />';
482: }
483: $r->print (<<ENDREDIR);
484: <html>
485: <head>
486: <title>Feedback sent</title>
487: <meta http-equiv="pragma" content="no-cache" />
488: <meta HTTP-EQUIV="Refresh" CONTENT="2; url=$feedurl" />
489: </head>
490: <body bgcolor="#FFFFFF" onLoad='if (window.name!="loncapaclient") { this.document.reldt.submit(); self.close(); }'>
491: <img align="right" src="/adm/lonIcons/lonlogos.gif" />
492: $typestyle
493: <b>Sent $sendsomething message(s), and $sendposts post(s).</b>
494: <font color="red">$status</font>
495: <form name="reldt" action="$feedurl" target="loncapaclient">
496: $prevtag
497: </form>
498: </body>
499: </html>
500: ENDREDIR
501: }
502:
503: sub no_redirect_back {
504: my ($r,$feedurl) = @_;
505: $r->print (<<ENDNOREDIR);
506: <html>
507: <head><title>Feedback not sent</title>
508: <meta http-equiv="pragma" content="no-cache" />
509: ENDNOREDIR
510:
511: if ($feedurl!~/^\/adm\/feedback/) {
512: $r->print('<meta HTTP-EQUIV="Refresh" CONTENT="2; url='.$feedurl.'">');
513: }
514:
515: $r->print (<<ENDNOREDIRTWO);
516: </head>
517: <body bgcolor="#FFFFFF" onLoad='if (window.name!="loncapaclient") { self.close(); }'>
518: <img align="right" src="/adm/lonIcons/lonlogos.gif" />
519: <b>Sorry, no feedback possible on this resource ...</b>
520: </body>
521: </html>
522: ENDNOREDIRTWO
523: }
524:
525: sub screen_header {
526: my ($feedurl) = @_;
527: my $msgoptions='';
528: my $discussoptions='';
529: unless ($ENV{'form.replydisc'}) {
530: if (($feedurl=~/^\/res\//) && ($feedurl!~/^\/res\/adm/)) {
531: $msgoptions=
532: '<p><input type="checkbox" name="author" /> '.
533: &mt('Feedback to resource author').'</p>';
534: }
535: if (&feedback_available(1)) {
536: $msgoptions.=
537: '<br /><input type="checkbox" name="question" /> '.
538: &mt('Question about resource content');
539: }
540: if (&feedback_available(0,1)) {
541: $msgoptions.=
542: '<br /><input type="checkbox" name="course" /> '.
543: &mt('Question/Comment/Feedback about course content');
544: }
545: if (&feedback_available(0,0,1)) {
546: $msgoptions.=
547: '<br /><input type="checkbox" name="policy" /> '.
548: &mt('Question/Comment/Feedback about course policy');
549: }
550: }
551: if ($ENV{'request.course.id'}) {
552: if (&Apache::lonnet::allowed('pch',
553: $ENV{'request.course.id'}.
554: ($ENV{'request.course.sec'}?'/'.$ENV{'request.course.sec'}:''))) {
555: $discussoptions='<input type="checkbox" name="discuss" onClick="this.form.anondiscuss.checked=false;" '.
556: ($ENV{'form.replydisc'}?' checked="1"':'').' /> '.
557: &mt('Contribution to course discussion of resource');
558: $discussoptions.='<br /><input type="checkbox" name="anondiscuss" onClick="this.form.discuss.checked=false;" /> '.
559: &mt('Anonymous contribution to course discussion of resource').
560: ' <i>('.&mt('name only visible to course faculty').')</i>';
561: }
562: }
563: if ($msgoptions) { $msgoptions='<h2><img src="/adm/lonMisc/feedback.gif" />'.&mt('Sending Messages').'</h2>'.$msgoptions; }
564: if ($discussoptions) {
565: $discussoptions='<h2><img src="/adm/lonMisc/chat.gif" />'.&mt('Discussion Contributions').'</h2>'.$discussoptions; }
566: return $msgoptions.$discussoptions;
567: }
568:
569: sub resource_output {
570: my ($feedurl) = @_;
571: my $usersaw=&Apache::lonnet::ssi_body($feedurl);
572: $usersaw=~s/\<body[^\>]*\>//gi;
573: $usersaw=~s/\<\/body\>//gi;
574: $usersaw=~s/\<html\>//gi;
575: $usersaw=~s/\<\/html\>//gi;
576: $usersaw=~s/\<head\>//gi;
577: $usersaw=~s/\<\/head\>//gi;
578: $usersaw=~s/action\s*\=/would_be_action\=/gi;
579: return $usersaw;
580: }
581:
582: sub clear_out_html {
583: my ($message,$override)=@_;
584: my $cid=$ENV{'request.course.id'};
585: if (($ENV{"course.$cid.allow_limited_html_in_feedback"} =~ m/yes/i) ||
586: ($override)) {
587: # allows <B> <I> <P> <A> <LI> <OL> <UL> <EM> <BR> <TT> <STRONG>
588: # <BLOCKQUOTE> <DIV .*> <DIV> <IMG>
589: my %html=(B=>1, I=>1, P=>1, A=>1, LI=>1, OL=>1, UL=>1, EM=>1,
590: BR=>1, TT=>1, STRONG=>1, BLOCKQUOTE=>1, DIV=>1, IMG=>1,
591: M=>1);
592:
593: $message =~ s/\<(\/?\s*(\w+)[^\>\<]*)/
594: {($html{uc($2)}&&(length($1)<1000))?"\<$1":"\<$1"}/ge;
595: $message =~ s/(\<?\s*(\w+)[^\<\>]*)\>/
596: {($html{uc($2)}&&(length($1)<1000))?"$1\>":"$1\>"}/ge;
597: } else {
598: $message=~s/\</\<\;/g;
599: $message=~s/\>/\>\;/g;
600: }
601: return $message;
602: }
603:
604: sub assemble_email {
605: my ($feedurl,$message,$prevattempts,$usersaw,$useranswer)=@_;
606: my $email=<<"ENDEMAIL";
607: Refers to <a href="$feedurl">$feedurl</a>
608:
609: $message
610: ENDEMAIL
611: my $citations=<<"ENDCITE";
612: <h2>Previous attempts of student (if applicable)</h2>
613: $prevattempts
614: <br /><hr />
615: <h2>Original screen output (if applicable)</h2>
616: $usersaw
617: <h2>Correct Answer(s) (if applicable)</h2>
618: $useranswer
619: ENDCITE
620: return ($email,$citations);
621: }
622:
623: sub secapply {
624: my $rec=shift;
625: my $defaultflag=shift;
626: $rec=~s/\s+//g;
627: $rec=~s/\@/\:/g;
628: my ($adr,$sections)=($rec=~/^([^\(]+)\(([^\)]+)\)/);
629: if ($sections) {
630: foreach (split(/\;/,$sections)) {
631: if (($_ eq $ENV{'request.course.sec'}) ||
632: ($defaultflag && ($_ eq '*'))) {
633: return $adr;
634: }
635: }
636: } else {
637: return $rec;
638: }
639: return '';
640: }
641:
642: sub decide_receiver {
643: my ($feedurl,$author,$question,$course,$policy,$defaultflag) = @_;
644: my $typestyle='';
645: my %to=();
646: if ($ENV{'form.author'}||$author) {
647: $typestyle.='Submitting as Author Feedback<br>';
648: $feedurl=~/^\/res\/(\w+)\/(\w+)\//;
649: $to{$2.':'.$1}=1;
650: }
651: if ($ENV{'form.question'}||$question) {
652: $typestyle.='Submitting as Question<br>';
653: foreach (split(/\,/,
654: $ENV{'course.'.$ENV{'request.course.id'}.'.question.email'})
655: ) {
656: my $rec=&secapply($_,$defaultflag);
657: if ($rec) { $to{$rec}=1; }
658: }
659: }
660: if ($ENV{'form.course'}||$course) {
661: $typestyle.='Submitting as Comment<br />';
662: foreach (split(/\,/,
663: $ENV{'course.'.$ENV{'request.course.id'}.'.comment.email'})
664: ) {
665: my $rec=&secapply($_,$defaultflag);
666: if ($rec) { $to{$rec}=1; }
667: }
668: }
669: if ($ENV{'form.policy'}||$policy) {
670: $typestyle.='Submitting as Policy Feedback<br />';
671: foreach (split(/\,/,
672: $ENV{'course.'.$ENV{'request.course.id'}.'.policy.email'})
673: ) {
674: my $rec=&secapply($_,$defaultflag);
675: if ($rec) { $to{$rec}=1; }
676: }
677: }
678: if ((scalar(%to) eq '0') && (!$defaultflag)) {
679: ($typestyle,%to)=
680: &decide_receiver($feedurl,$author,$question,$course,$policy,1);
681: }
682: return ($typestyle,%to);
683: }
684:
685: sub feedback_available {
686: my ($question,$course,$policy)=@_;
687: my ($typestyle,%to)=&decide_receiver('',0,$question,$course,$policy);
688: return scalar(%to);
689: }
690:
691: sub send_msg {
692: my ($feedurl,$email,$citations,$attachmenturl,%to)=@_;
693: my $status='';
694: my $sendsomething=0;
695: foreach (keys %to) {
696: if ($_) {
697: my $declutter=&Apache::lonnet::declutter($feedurl);
698: unless (&Apache::lonmsg::user_normal_msg(split(/\:/,$_),
699: 'Feedback ['.$declutter.']',$email,$citations,$feedurl,
700: $attachmenturl)=~/ok/) {
701: $status.='<br />'.&mt('Error sending message to').' '.$_.'<br />';
702: } else {
703: $sendsomething++;
704: }
705: }
706: }
707:
708: my %record=&Apache::lonnet::restore('_feedback');
709: my ($temp)=keys %record;
710: unless ($temp=~/^error\:/) {
711: my %newrecord=();
712: $newrecord{'resource'}=$feedurl;
713: $newrecord{'subnumber'}=$record{'subnumber'}+1;
714: unless (&Apache::lonnet::cstore(\%newrecord,'_feedback') eq 'ok') {
715: $status.='<br />'.&mt('Not registered').'<br />';
716: }
717: }
718:
719: return ($status,$sendsomething);
720: }
721:
722: sub adddiscuss {
723: my ($symb,$email,$anon,$attachmenturl,$subject)=@_;
724: my $status='';
725: if (&Apache::lonnet::allowed('pch',$ENV{'request.course.id'}.
726: ($ENV{'request.course.sec'}?'/'.$ENV{'request.course.sec'}:''))) {
727:
728: my %contrib=('message' => $email,
729: 'sendername' => $ENV{'user.name'},
730: 'senderdomain' => $ENV{'user.domain'},
731: 'screenname' => $ENV{'environment.screenname'},
732: 'plainname' => $ENV{'environment.firstname'}.' '.
733: $ENV{'environment.middlename'}.' '.
734: $ENV{'environment.lastname'}.' '.
735: $ENV{'enrironment.generation'},
736: 'attachmenturl'=> $attachmenturl,
737: 'subject' => $subject);
738: if ($ENV{'form.replydisc'}) {
739: $contrib{'replyto'}=(split(/\:\:\:/,$ENV{'form.replydisc'}))[1];
740: }
741: if ($anon) {
742: $contrib{'anonymous'}='true';
743: }
744: if (($symb) && ($email)) {
745: $status='Adding to class discussion'.($anon?' (anonymous)':'').': '.
746: &Apache::lonnet::store(\%contrib,$symb,$ENV{'request.course.id'},
747: $ENV{'course.'.$ENV{'request.course.id'}.'.domain'},
748: $ENV{'course.'.$ENV{'request.course.id'}.'.num'});
749: my %storenewentry=($symb => time);
750: $status.='<br />'.&mt('Updating discussion time').': '.
751: &Apache::lonnet::put('discussiontimes',\%storenewentry,
752: $ENV{'course.'.$ENV{'request.course.id'}.'.domain'},
753: $ENV{'course.'.$ENV{'request.course.id'}.'.num'});
754: }
755: my %record=&Apache::lonnet::restore('_discussion');
756: my ($temp)=keys %record;
757: unless ($temp=~/^error\:/) {
758: my %newrecord=();
759: $newrecord{'resource'}=$symb;
760: $newrecord{'subnumber'}=$record{'subnumber'}+1;
761: $status.='<br />'.&mt('Registering').': '.
762: &Apache::lonnet::cstore(\%newrecord,'_discussion');
763: }
764: } else {
765: $status.='Failed.';
766: }
767: return $status.'<br />';
768: }
769:
770: # ----------------------------------------------------------- Preview function
771:
772: sub show_preview {
773: my $r=shift;
774: my $message=&clear_out_html($ENV{'form.comment'});
775: $message=~s/\n/\<br \/\>/g;
776: $message=&Apache::lontexconvert::msgtexconverted($message);
777: my $subject=&clear_out_html($ENV{'form.subject'});
778: $subject=~s/\n/\<br \/\>/g;
779: $subject=&Apache::lontexconvert::msgtexconverted($subject);
780: $r->print('<table border="2"><tr><td>'.
781: '<b>Subject:</b> '.$subject.'<br /><br />'.
782: $message.'</td></tr></table>');
783: }
784:
785: sub generate_preview_button {
786: my $pre=&mt("Show Preview");
787: return(<<ENDPREVIEW);
788: <form name="preview" action="/adm/feedback?preview=1" method="post" target="preview">
789: <input type="hidden" name="subject">
790: <input type="hidden" name="comment" />
791: <input type="button" value="$pre"
792: onClick="this.form.comment.value=document.mailform.comment.value;this.form.subject.value=document.mailform.subject.value;this.form.submit();" />
793: </form>
794: ENDPREVIEW
795: }
796:
797: sub handler {
798: my $r = shift;
799: if ($r->header_only) {
800: &Apache::loncommon::content_type($r,'text/html');
801: $r->send_http_header;
802: return OK;
803: }
804:
805: # --------------------------- Get query string for limited number of parameters
806:
807: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
808: ['hide','unhide','deldisc','postdata','preview','replydisc','threadedon','threadedoff','onlyunread','allposts','previous']);
809:
810: if (($ENV{'form.allposts'}) || ($ENV{'form.onlyunread'})) {
811: # ----------------------------------------------------------------- Modify display setting for this discussion
812: &Apache::loncommon::content_type($r,'text/html');
813: $r->send_http_header;
814: my $symb=$ENV{'form.allposts'}?$ENV{'form.allposts'}:$ENV{'form.onlyunread'};
815: my ($map,$ind,$url)=&Apache::lonnet::decode_symb($symb);
816: my %contrib=&Apache::lonnet::restore($symb,$ENV{'request.course.id'},
817: $ENV{'course.'.$ENV{'request.course.id'}.'.domain'},
818: $ENV{'course.'.$ENV{'request.course.id'}.'.num'});
819: my %readinghash = ();
820:
821: if ($contrib{'version'}) {
822: if ($ENV{'form.allposts'}) {
823: $readinghash{$symb.'_showonlyunread'} = 0;
824: } elsif ($ENV{'form.onlyunread'}) {
825: $readinghash{$symb.'_showonlyunread'} = 1;
826: }
827: &Apache::lonnet::put('nohist_'.$ENV{'request.course.id'}.'_discuss',\%readinghash,$ENV{'user.domain'},$ENV{'user.name'});
828: }
829: &redirect_back($r,&Apache::lonnet::clutter($url),&mt('Changed reading status').'<br />','0','0','',$ENV{'form.previous'});
830: return OK;
831: } elsif (($ENV{'form.hide'}) || ($ENV{'form.unhide'})) {
832: # ----------------------------------------------------------------- Hide/unhide
833: &Apache::loncommon::content_type($r,'text/html');
834: $r->send_http_header;
835:
836: my $entry=$ENV{'form.hide'}?$ENV{'form.hide'}:$ENV{'form.unhide'};
837:
838: my ($symb,$idx)=split(/\:\:\:/,$entry);
839: my ($map,$ind,$url)=&Apache::lonnet::decode_symb($symb);
840:
841: my %contrib=&Apache::lonnet::restore($symb,$ENV{'request.course.id'},
842: $ENV{'course.'.$ENV{'request.course.id'}.'.domain'},
843: $ENV{'course.'.$ENV{'request.course.id'}.'.num'});
844:
845:
846: my $currenthidden=$contrib{'hidden'};
847:
848: if ($ENV{'form.hide'}) {
849: $currenthidden.='.'.$idx.'.';
850: } else {
851: $currenthidden=~s/\.$idx\.//g;
852: }
853: my %newhash=('hidden' => $currenthidden);
854:
855: &Apache::lonnet::store(\%newhash,$symb,$ENV{'request.course.id'},
856: $ENV{'course.'.$ENV{'request.course.id'}.'.domain'},
857: $ENV{'course.'.$ENV{'request.course.id'}.'.num'});
858:
859: &redirect_back($r,&Apache::lonnet::clutter($url),
860: &mt('Changed discussion status').'<br />','0','0','',$ENV{'form.previous'});
861: } elsif (($ENV{'form.threadedon'}) || ($ENV{'form.threadedoff'})) {
862: &Apache::loncommon::content_type($r,'text/html');
863: $r->send_http_header;
864: if ($ENV{'form.threadedon'}) {
865: &Apache::lonnet::put('environment',{'threadeddiscussion' => 'on'});
866: &Apache::lonnet::appenv('environment.threadeddiscussion' => 'on');
867: } else {
868: &Apache::lonnet::del('environment',['threadeddiscussion']);
869: &Apache::lonnet::delenv('environment\.threadeddiscussion');
870: }
871: my $symb=$ENV{'form.threadedon'}?$ENV{'form.threadedon'}:$ENV{'form.threadedoff'};
872: my ($map,$ind,$url)=&Apache::lonnet::decode_symb($symb);
873: &redirect_back($r,&Apache::lonnet::clutter($url),
874: &mt('Changed discussion view mode').'<br />','0','0','',$ENV{'form.previous'});
875: } elsif ($ENV{'form.deldisc'}) {
876: # --------------------------------------------------------------- Hide for good
877: &Apache::loncommon::content_type($r,'text/html');
878: $r->send_http_header;
879:
880: my $entry=$ENV{'form.deldisc'};
881:
882: my ($symb,$idx)=split(/\:\:\:/,$entry);
883: my ($map,$ind,$url)=&Apache::lonnet::decode_symb($symb);
884:
885: my %contrib=&Apache::lonnet::restore($symb,$ENV{'request.course.id'},
886: $ENV{'course.'.$ENV{'request.course.id'}.'.domain'},
887: $ENV{'course.'.$ENV{'request.course.id'}.'.num'});
888:
889:
890: my $currentdeleted=$contrib{'deleted'};
891:
892: $currentdeleted.='.'.$idx.'.';
893:
894: my %newhash=('deleted' => $currentdeleted);
895:
896: &Apache::lonnet::store(\%newhash,$symb,$ENV{'request.course.id'},
897: $ENV{'course.'.$ENV{'request.course.id'}.'.domain'},
898: $ENV{'course.'.$ENV{'request.course.id'}.'.num'});
899:
900: &redirect_back($r,&Apache::lonnet::clutter($url),
901: &mt('Changed discussion status').'<br />','0','0','',$ENV{'form.previous'});
902: } elsif ($ENV{'form.preview'}) {
903: # -------------------------------------------------------- User wants a preview
904: $r->content_type('text/html');
905: $r->send_http_header;
906: &show_preview($r);
907: } else {
908: # ------------------------------------------------------------- Normal feedback
909: my $feedurl=$ENV{'form.postdata'};
910: $feedurl=~s/^http\:\/\///;
911: $feedurl=~s/^$ENV{'SERVER_NAME'}//;
912: $feedurl=~s/^$ENV{'HTTP_HOST'}//;
913: $feedurl=~s/\?.+$//;
914:
915: my $symb;
916: if ($ENV{'form.replydisc'}) {
917: $symb=(split(/\:\:\:/,$ENV{'form.replydisc'}))[0];
918: my ($map,$id,$url)=&Apache::lonnet::decode_symb($symb);
919: $feedurl=&Apache::lonnet::clutter($url);
920: } else {
921: $symb=&Apache::lonnet::symbread($feedurl);
922: }
923: unless ($symb) {
924: $symb=$ENV{'form.symb'};
925: if ($symb) {
926: my ($map,$id,$url)=&Apache::lonnet::decode_symb($symb);
927: $feedurl=&Apache::lonnet::clutter($url);
928: }
929: }
930: my $goahead=1;
931: if ($feedurl=~/\.(problem|exam|quiz|assess|survey|form)$/) {
932: unless ($symb) { $goahead=0; }
933: }
934: # backward compatibility (bulltin boards used to be 'wrapped')
935: if ($feedurl=~m|^/adm/wrapper/adm/.*/bulletinboard$|) {
936: $feedurl=~s|^/adm/wrapper||;
937: }
938: if ($goahead) {
939: # Go ahead with feedback, no ambiguous reference
940: &Apache::loncommon::content_type($r,'text/html');
941: $r->send_http_header;
942:
943: if (
944: (
945: ($feedurl=~m:^/res:) && ($feedurl!~m:^/res/adm:)
946: )
947: ||
948: ($ENV{'request.course.id'} && ($feedurl!~m:^/adm:))
949: ||
950: ($ENV{'request.course.id'} && ($symb=~/^bulletin\_\_\_/))
951: ) {
952: # --------------------------------------------------- Print login screen header
953: unless ($ENV{'form.sendit'}) {
954: my $options=&screen_header($feedurl);
955: if ($options) {
956: &mail_screen($r,$feedurl,$options);
957: } else {
958: &fail_redirect($r,$feedurl);
959: }
960: } else {
961:
962: # Get previous user input
963: my $prevattempts=&Apache::loncommon::get_previous_attempt(
964: $symb,$ENV{'user.name'},$ENV{'user.domain'},
965: $ENV{'request.course.id'});
966:
967: # Get output from resource
968: my $usersaw=&resource_output($feedurl);
969:
970: # Get resource answer (need to allow student to view grades for this to work)
971: &Apache::lonnet::appenv(('allowed.vgr'=>'F'));
972: my $useranswer=&Apache::loncommon::get_student_answers(
973: $symb,$ENV{'user.name'},$ENV{'user.domain'},
974: $ENV{'request.course.id'});
975: &Apache::lonnet::delenv('allowed.vgr');
976: # Get attachments, if any, and not too large
977: my $attachmenturl='';
978: if ($ENV{'form.attachment.filename'}) {
979: unless (length($ENV{'form.attachment'})>131072) {
980: $attachmenturl=&Apache::lonnet::userfileupload('attachment',undef,'feedback');
981: }
982: }
983: # Filter HTML out of message (could be nasty)
984: my $message=&clear_out_html($ENV{'form.comment'});
985:
986: # Assemble email
987: my ($email,$citations)=&assemble_email($feedurl,$message,$prevattempts,
988: $usersaw,$useranswer);
989:
990: # Who gets this?
991: my ($typestyle,%to) = &decide_receiver($feedurl);
992:
993: # Actually send mail
994: my ($status,$numsent)=&send_msg($feedurl,$email,$citations,
995: $attachmenturl,%to);
996:
997: # Discussion? Store that.
998:
999: my $numpost=0;
1000: if ($ENV{'form.discuss'}) {
1001: my $subject = &clear_out_html($ENV{'form.subject'});
1002: $typestyle.=&adddiscuss($symb,$message,0,$attachmenturl,$subject);
1003: $numpost++;
1004: }
1005:
1006: if ($ENV{'form.anondiscuss'}) {
1007: my $subject = &clear_out_html($ENV{'form.subject'});
1008: $typestyle.=&adddiscuss($symb,$message,1,$attachmenturl,$subject);
1009: $numpost++;
1010: }
1011:
1012:
1013: # Receipt screen and redirect back to where came from
1014: &redirect_back($r,$feedurl,$typestyle,$numsent,$numpost,$status,$ENV{'form.previous'});
1015:
1016: }
1017: } else {
1018: # Unable to give feedback
1019: &no_redirect_back($r,$feedurl);
1020: }
1021: } else {
1022: # Ambiguous Problem Resource
1023: if ( &Apache::lonnet::mod_perl_version() == 2 ) {
1024: &Apache::lonnet::cleanenv();
1025: }
1026: $r->internal_redirect('/adm/ambiguous');
1027: }
1028: }
1029: return OK;
1030: }
1031:
1032: 1;
1033: __END__
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