1: # The LearningOnline Network
2: # Feedback
3: #
4: # $Id: lonfeedback.pm,v 1.63 2003/10/15 20:13:31 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: my $discussiononly=0;
59: if ($mode eq 'board') { $discussiononly=1; }
60: unless ($ENV{'request.course.id'}) { return ''; }
61: my $crs='/'.$ENV{'request.course.id'};
62: if ($ENV{'request.course.sec'}) {
63: $crs.='_'.$ENV{'request.course.sec'};
64: }
65: $crs=~s/\_/\//g;
66: unless ($symb) {
67: $symb=&Apache::lonnet::symbread();
68: }
69: unless ($symb) { return ''; }
70: my $seeid=&Apache::lonnet::allowed('rin',$crs);
71: my $viewgrades=&Apache::lonnet::allowed('vgr',$crs);
72: my $discussion='';
73: my %contrib=&Apache::lonnet::restore($symb,$ENV{'request.course.id'},
74: $ENV{'course.'.$ENV{'request.course.id'}.'.domain'},
75: $ENV{'course.'.$ENV{'request.course.id'}.'.num'});
76: if ($contrib{'version'}) {
77: unless ($discussiononly) {
78: $discussion.=
79: '<address><hr />';
80: }
81: my $idx;
82: for ($idx=1;$idx<=$contrib{'version'};$idx++) {
83: my $hidden=($contrib{'hidden'}=~/\.$idx\./);
84: my $deleted=($contrib{'deleted'}=~/\.$idx\./);
85: unless ((($hidden) && (!$seeid)) || ($deleted)) {
86: my $message=$contrib{$idx.':message'};
87: $message=~s/\n/\<br \/\>/g;
88: $message=&Apache::lontexconvert::msgtexconverted($message);
89: if ($contrib{$idx.':attachmenturl'}) {
90: my ($fname,$ft)
91: =($contrib{$idx.':attachmenturl'}=~/\/(\w+)\.(\w+)$/);
92: $message.='<p>'.&mt('Attachment').': <a href="'.
93: &Apache::lonnet::tokenwrapper(
94: $contrib{$idx.':attachmenturl'}).
95: '"><tt>'.$fname.'.'.$ft.'</tt></a></p>';
96: }
97: if ($message) {
98: if ($hidden) {
99: $message='<font color="#888888">'.$message.'</font>';
100: }
101: my $screenname=&Apache::loncommon::screenname(
102: $contrib{$idx.':sendername'},
103: $contrib{$idx.':senderdomain'});
104: my $plainname=&Apache::loncommon::nickname(
105: $contrib{$idx.':sendername'},
106: $contrib{$idx.':senderdomain'});
107:
108: my $sender=&mt('Anonymous');
109: if ((!$contrib{$idx.':anonymous'}) || ($seeid)) {
110: $sender=&Apache::loncommon::aboutmewrapper(
111: $plainname,
112: $contrib{$idx.':sendername'},
113: $contrib{$idx.':senderdomain'}).' ('.
114: $contrib{$idx.':sendername'}.' at '.
115: $contrib{$idx.':senderdomain'}.')';
116: if ($contrib{$idx.':anonymous'}) {
117: $sender.=' ['.&mt('anonymous').'] '.
118: $screenname;
119: }
120: if ($seeid) {
121: if ($hidden) {
122: $sender.=' <a href="/adm/feedback?unhide='.
123: $symb.':::'.$idx.'">'.&mt('Make Visible').'</a>';
124: } else {
125: $sender.=' <a href="/adm/feedback?hide='.
126: $symb.':::'.$idx.'">'.&mt('Hide').'</a>';
127: }
128: $sender.=' <a href="/adm/feedback?deldisc='.
129: $symb.':::'.$idx.'">'.&mt('Delete').'</a>';
130: }
131: } else {
132: if ($screenname) {
133: $sender='<i>'.$screenname.'</i>';
134: }
135: }
136: my $vgrlink;
137: if ($viewgrades) {
138: $vgrlink=&Apache::loncommon::submlink('Submissions',
139: $contrib{$idx.':sendername'},$contrib{$idx.':senderdomain'},$symb);
140: }
141: $discussion.='<p><b>'.$sender.'</b> '.$vgrlink.' ('.
142: localtime($contrib{$idx.':timestamp'}).
143: '):<blockquote>'.$message.
144: '</blockquote></p>';
145: }
146: }
147: }
148: unless ($discussiononly) {
149: $discussion.='</address>';
150: }
151: }
152: if ($discussiononly) {
153: $discussion.=(<<ENDDISCUSS);
154: <form action="/adm/feedback" method="post" name="mailform" enctype="multipart/form-data">
155: <input type="submit" name="discuss" value="Post Discussion" />
156: <input type="submit" name="anondiscuss" value="Post Anonymous Discussion" />
157: <input type="hidden" name="symb" value="$symb" />
158: <input type="hidden" name="sendit" value="true" />
159: <br />
160: <font size="1">Note: in anonymous discussion, your name is visible only to
161: course faculty</font><br />
162: <textarea name="comment" cols="60" rows="10" wrap="hard"></textarea>
163: <p>
164: Attachment (128 KB max size): <input type="file" name="attachment" />
165: </p>
166: </form>
167: ENDDISCUSS
168: $discussion.=&generate_preview_button();
169: }
170: return $discussion;
171: }
172:
173: sub mail_screen {
174: my ($r,$feedurl,$options) = @_;
175: my $bodytag=&Apache::loncommon::bodytag('Resource Feedback and Discussion',
176: '','onLoad="window.focus();"');
177: my $title=&Apache::lonnet::gettitle($feedurl);
178: if (!$title) { $title = $feedurl; }
179: my $latexHelp = Apache::loncommon::helpLatexCheatsheet();
180: $r->print(<<ENDDOCUMENT);
181: <html>
182: <head>
183: <title>The LearningOnline Network with CAPA</title>
184: <meta http-equiv="pragma" content="no-cache"></meta>
185: <script type="text/javascript">
186: //<!--
187: function gosubmit() {
188: var rec=0;
189: if (typeof(document.mailform.elements.author)!="undefined") {
190: if (document.mailform.elements.author.checked) {
191: rec=1;
192: }
193: }
194: if (typeof(document.mailform.elements.question)!="undefined") {
195: if (document.mailform.elements.question.checked) {
196: rec=1;
197: }
198: }
199: if (typeof(document.mailform.elements.course)!="undefined") {
200: if (document.mailform.elements.course.checked) {
201: rec=1;
202: }
203: }
204: if (typeof(document.mailform.elements.policy)!="undefined") {
205: if (document.mailform.elements.policy.checked) {
206: rec=1;
207: }
208: }
209: if (typeof(document.mailform.elements.discuss)!="undefined") {
210: if (document.mailform.elements.discuss.checked) {
211: rec=1;
212: }
213: }
214: if (typeof(document.mailform.elements.anondiscuss)!="undefined") {
215: if (document.mailform.elements.anondiscuss.checked) {
216: rec=1;
217: }
218: }
219:
220: if (rec) {
221: document.mailform.submit();
222: } else {
223: alert('Please check a feedback type.');
224: }
225: }
226: //-->
227: </script>
228: </head>
229: $bodytag
230: <h2><tt>$title</tt></h2>
231: <form action="/adm/feedback" method="post" name="mailform"
232: enctype="multipart/form-data">
233: <input type="hidden" name="postdata" value="$feedurl" />
234: Please check at least one of the following feedback types:
235: $options<hr />
236: <p>My question/comment/feedback:</p>
237: <p>
238: $latexHelp
239: <textarea name="comment" cols="60" rows="10" wrap="hard">
240: </textarea></p>
241: <p>
242: Attachment (128 KB max size): <input type="file" name="attachment" />
243: </p>
244: <p>
245: <input type="hidden" name="sendit" value="1" />
246: <input type="button" value="Send Feedback" onClick='gosubmit();' />
247: </p>
248: </form>
249: ENDDOCUMENT
250: $r->print(&generate_preview_button().'</body></html>');
251: }
252:
253: sub fail_redirect {
254: my ($r,$feedurl) = @_;
255: $r->print (<<ENDFAILREDIR);
256: <head><title>Feedback not sent</title>
257: <meta http-equiv="pragma" content="no-cache" />
258: <meta HTTP-EQUIV="Refresh" CONTENT="2; url=$feedurl" />
259: </head>
260: <html>
261: <body bgcolor="#FFFFFF">
262: <img align="right" src="/adm/lonIcons/lonlogos.gif" />
263: <b>Sorry, no recipients ...</b>
264: </body>
265: </html>
266: ENDFAILREDIR
267: }
268:
269: sub redirect_back {
270: my ($r,$feedurl,$typestyle,$sendsomething,$sendposts,$status) = @_;
271: $r->print (<<ENDREDIR);
272: <head>
273: <title>Feedback sent</title>
274: <meta http-equiv="pragma" content="no-cache" />
275: <meta HTTP-EQUIV="Refresh" CONTENT="2; url=$feedurl">
276: </head>
277: <html>
278: <body bgcolor="#FFFFFF" onLoad='if (window.name!="loncapaclient") { this.document.reldt.submit(); self.close(); }'>
279: <img align="right" src="/adm/lonIcons/lonlogos.gif" />
280: $typestyle
281: <b>Sent $sendsomething message(s), and $sendposts post(s).</b>
282: <font color="red">$status</font>
283: <form name="reldt" action="$feedurl" target="loncapaclient">
284: </form>
285: </body>
286: </html>
287: ENDREDIR
288: }
289:
290: sub no_redirect_back {
291: my ($r,$feedurl) = @_;
292: $r->print (<<ENDNOREDIR);
293: <head><title>Feedback not sent</title>
294: <meta http-equiv="pragma" content="no-cache" />
295: ENDNOREDIR
296:
297: if ($feedurl!~/^\/adm\/feedback/) {
298: $r->print('<meta HTTP-EQUIV="Refresh" CONTENT="2; url='.$feedurl.'">');
299: }
300:
301: $r->print (<<ENDNOREDIRTWO);
302: </head>
303: <html>
304: <body bgcolor="#FFFFFF" onLoad='if (window.name!="loncapaclient") { self.close(); }'>
305: <img align="right" src="/adm/lonIcons/lonlogos.gif" />
306: <b>Sorry, no feedback possible on this resource ...</b>
307: </body>
308: </html>
309: ENDNOREDIRTWO
310: }
311:
312: sub screen_header {
313: my ($feedurl) = @_;
314: my $msgoptions='';
315: my $discussoptions='';
316: if (($feedurl=~/^\/res\//) && ($feedurl!~/^\/res\/adm/)) {
317: $msgoptions=
318: '<p><input type="checkbox" name="author" /> '.
319: &mt('Feedback to resource author').'</p>';
320: }
321: if (&feedback_available(1)) {
322: $msgoptions.=
323: '<br /><input type="checkbox" name="question" /> '.
324: &mt('Question about resource content');
325: }
326: if (&feedback_available(0,1)) {
327: $msgoptions.=
328: '<br /><input type="checkbox" name="course" /> '.
329: &mt('Question/Comment/Feedback about course content');
330: }
331: if (&feedback_available(0,0,1)) {
332: $msgoptions.=
333: '<br /><input type="checkbox" name="policy" /> '.
334: &mt('Question/Comment/Feedback about course policy');
335: }
336:
337: if ($ENV{'request.course.id'}) {
338: if (&Apache::lonnet::allowed('pch',
339: $ENV{'request.course.id'}.
340: ($ENV{'request.course.sec'}?'/'.$ENV{'request.course.sec'}:''))) {
341: $discussoptions='<input type="checkbox" name="discuss" onClick="this.form.anondiscuss.checked=false;" /> '.
342: &mt('Contribution to course discussion of resource');
343: $discussoptions.='<br /><input type="checkbox" name="anondiscuss" onClick="this.form.discuss.checked=false;" /> '.
344: &mt('Anonymous contribution to course discussion of resource').
345: ' <i>('.&mt('name only visible to course faculty').')</i>';
346: }
347: }
348: if ($msgoptions) { $msgoptions='<h2>'.&mt('Sending Messages').'</h2>'.$msgoptions; }
349: if ($discussoptions) {
350: $discussoptions='<h2>'.&mt('Discussion Contributions').'</h2>'.$discussoptions; }
351: return $msgoptions.$discussoptions;
352: }
353:
354: sub resource_output {
355: my ($feedurl) = @_;
356: my $usersaw=&Apache::lonnet::ssi_body($feedurl);
357: $usersaw=~s/\<body[^\>]*\>//gi;
358: $usersaw=~s/\<\/body\>//gi;
359: $usersaw=~s/\<html\>//gi;
360: $usersaw=~s/\<\/html\>//gi;
361: $usersaw=~s/\<head\>//gi;
362: $usersaw=~s/\<\/head\>//gi;
363: $usersaw=~s/action\s*\=/would_be_action\=/gi;
364: return $usersaw;
365: }
366:
367: sub clear_out_html {
368: my ($message,$override)=@_;
369: my $cid=$ENV{'request.course.id'};
370: if (($ENV{"course.$cid.allow_limited_html_in_feedback"} =~ m/yes/i) ||
371: ($override)) {
372: # allows <B> <I> <P> <A> <LI> <OL> <UL> <EM> <BR> <TT> <STRONG>
373: # <BLOCKQUOTE> <DIV .*> <DIV> <IMG>
374: my %html=(B=>1, I=>1, P=>1, A=>1, LI=>1, OL=>1, UL=>1, EM=>1,
375: BR=>1, TT=>1, STRONG=>1, BLOCKQUOTE=>1, DIV=>1, IMG=>1,
376: M=>1);
377:
378: $message =~ s/\<(\/?\s*(\w+)[^\>\<]*)/
379: {($html{uc($2)}&&(length($1)<1000))?"\<$1":"\<$1"}/ge;
380: $message =~ s/(\<?\s*(\w+)[^\<\>]*)\>/
381: {($html{uc($2)}&&(length($1)<1000))?"$1\>":"$1\>"}/ge;
382: } else {
383: $message=~s/\</\<\;/g;
384: $message=~s/\>/\>\;/g;
385: }
386: return $message;
387: }
388:
389: sub assemble_email {
390: my ($feedurl,$message,$prevattempts,$usersaw,$useranswer)=@_;
391: my $email=<<"ENDEMAIL";
392: Refers to <a href="$feedurl">$feedurl</a>
393:
394: $message
395: ENDEMAIL
396: my $citations=<<"ENDCITE";
397: <h2>Previous attempts of student (if applicable)</h2>
398: $prevattempts
399: <br /><hr />
400: <h2>Original screen output (if applicable)</h2>
401: $usersaw
402: <h2>Correct Answer(s) (if applicable)</h2>
403: $useranswer
404: ENDCITE
405: return ($email,$citations);
406: }
407:
408: sub secapply {
409: my $rec=shift;
410: my $defaultflag=shift;
411: $rec=~s/\s+//g;
412: $rec=~s/\@/\:/g;
413: my ($adr,$sections)=($rec=~/^([^\(]+)\(([^\)]+)\)/);
414: if ($sections) {
415: foreach (split(/\;/,$sections)) {
416: if (($_ eq $ENV{'request.course.sec'}) ||
417: ($defaultflag && ($_ eq '*'))) {
418: return $adr;
419: }
420: }
421: } else {
422: return $rec;
423: }
424: return '';
425: }
426:
427: sub decide_receiver {
428: my ($feedurl,$author,$question,$course,$policy,$defaultflag) = @_;
429: my $typestyle='';
430: my %to=();
431: if ($ENV{'form.author'}||$author) {
432: $typestyle.='Submitting as Author Feedback<br>';
433: $feedurl=~/^\/res\/(\w+)\/(\w+)\//;
434: $to{$2.':'.$1}=1;
435: }
436: if ($ENV{'form.question'}||$question) {
437: $typestyle.='Submitting as Question<br>';
438: foreach (split(/\,/,
439: $ENV{'course.'.$ENV{'request.course.id'}.'.question.email'})
440: ) {
441: my $rec=&secapply($_,$defaultflag);
442: if ($rec) { $to{$rec}=1; }
443: }
444: }
445: if ($ENV{'form.course'}||$course) {
446: $typestyle.='Submitting as Comment<br />';
447: foreach (split(/\,/,
448: $ENV{'course.'.$ENV{'request.course.id'}.'.comment.email'})
449: ) {
450: my $rec=&secapply($_,$defaultflag);
451: if ($rec) { $to{$rec}=1; }
452: }
453: }
454: if ($ENV{'form.policy'}||$policy) {
455: $typestyle.='Submitting as Policy Feedback<br />';
456: foreach (split(/\,/,
457: $ENV{'course.'.$ENV{'request.course.id'}.'.policy.email'})
458: ) {
459: my $rec=&secapply($_,$defaultflag);
460: if ($rec) { $to{$rec}=1; }
461: }
462: }
463: if ((scalar(%to) eq '0') && (!$defaultflag)) {
464: ($typestyle,%to)=
465: &decide_receiver($feedurl,$author,$question,$course,$policy,1);
466: }
467: return ($typestyle,%to);
468: }
469:
470: sub feedback_available {
471: my ($question,$course,$policy)=@_;
472: my ($typestyle,%to)=&decide_receiver('',0,$question,$course,$policy);
473: return scalar(%to);
474: }
475:
476: sub send_msg {
477: my ($feedurl,$email,$citations,$attachmenturl,%to)=@_;
478: my $status='';
479: my $sendsomething=0;
480: foreach (keys %to) {
481: if ($_) {
482: my $declutter=&Apache::lonnet::declutter($feedurl);
483: unless (&Apache::lonmsg::user_normal_msg(split(/\:/,$_),
484: 'Feedback ['.$declutter.']',$email,$citations,$feedurl,
485: $attachmenturl)=~/ok/) {
486: $status.='<br />'.&mt('Error sending message to').' '.$_.'<br />';
487: } else {
488: $sendsomething++;
489: }
490: }
491: }
492:
493: my %record=&Apache::lonnet::restore('_feedback');
494: my ($temp)=keys %record;
495: unless ($temp=~/^error\:/) {
496: my %newrecord=();
497: $newrecord{'resource'}=$feedurl;
498: $newrecord{'subnumber'}=$record{'subnumber'}+1;
499: unless (&Apache::lonnet::cstore(\%newrecord,'_feedback') eq 'ok') {
500: $status.='<br />'.&mt('Not registered').'<br />';
501: }
502: }
503:
504: return ($status,$sendsomething);
505: }
506:
507: sub adddiscuss {
508: my ($symb,$email,$anon,$attachmenturl)=@_;
509: my $status='';
510: if (&Apache::lonnet::allowed('pch',$ENV{'request.course.id'}.
511: ($ENV{'request.course.sec'}?'/'.$ENV{'request.course.sec'}:''))) {
512:
513: my %contrib=('message' => $email,
514: 'sendername' => $ENV{'user.name'},
515: 'senderdomain' => $ENV{'user.domain'},
516: 'screenname' => $ENV{'environment.screenname'},
517: 'plainname' => $ENV{'environment.firstname'}.' '.
518: $ENV{'environment.middlename'}.' '.
519: $ENV{'environment.lastname'}.' '.
520: $ENV{'enrironment.generation'},
521: 'attachmenturl'=> $attachmenturl);
522: if ($anon) {
523: $contrib{'anonymous'}='true';
524: }
525: if (($symb) && ($email)) {
526: $status='Adding to class discussion'.($anon?' (anonymous)':'').': '.
527: &Apache::lonnet::store(\%contrib,$symb,$ENV{'request.course.id'},
528: $ENV{'course.'.$ENV{'request.course.id'}.'.domain'},
529: $ENV{'course.'.$ENV{'request.course.id'}.'.num'});
530: my %storenewentry=($symb => time);
531: $status.='<br />'.&mt('Updating discussion time').': '.
532: &Apache::lonnet::put('discussiontimes',\%storenewentry,
533: $ENV{'course.'.$ENV{'request.course.id'}.'.domain'},
534: $ENV{'course.'.$ENV{'request.course.id'}.'.num'});
535: }
536: my %record=&Apache::lonnet::restore('_discussion');
537: my ($temp)=keys %record;
538: unless ($temp=~/^error\:/) {
539: my %newrecord=();
540: $newrecord{'resource'}=$symb;
541: $newrecord{'subnumber'}=$record{'subnumber'}+1;
542: $status.='<br />'.&mt('Registering').': '.
543: &Apache::lonnet::cstore(\%newrecord,'_discussion');
544: }
545: } else {
546: $status.='Failed.';
547: }
548: return $status.'<br />';
549: }
550:
551: # ----------------------------------------------------------- Preview function
552:
553: sub show_preview {
554: my $r=shift;
555: my $message=&clear_out_html($ENV{'form.comment'});
556: $message=~s/\n/\<br \/\>/g;
557: $message=&Apache::lontexconvert::msgtexconverted($message);
558: $r->print('<table border="2"><tr><td>'.
559: $message.'</td></tr></table>');
560: }
561:
562: sub generate_preview_button {
563: return(<<ENDPREVIEW);
564: <form name="preview" action="/adm/feedback?preview=1" method="post" target="preview">
565: <input type="hidden" name="comment" />
566: <input type="button" value="Show Preview"
567: onClick="this.form.comment.value=document.mailform.comment.value;this.form.submit();" />
568: </form>
569: ENDPREVIEW
570: }
571: sub handler {
572: my $r = shift;
573: if ($r->header_only) {
574: $r->content_type('text/html');
575: $r->send_http_header;
576: return OK;
577: }
578:
579: # --------------------------- Get query string for limited number of parameters
580:
581: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
582: ['hide','unhide','deldisc','postdata','preview']);
583:
584: if (($ENV{'form.hide'}) || ($ENV{'form.unhide'})) {
585: # ----------------------------------------------------------------- Hide/unhide
586: $r->content_type('text/html');
587: $r->send_http_header;
588:
589: my $entry=$ENV{'form.hide'}?$ENV{'form.hide'}:$ENV{'form.unhide'};
590:
591: my ($symb,$idx)=split(/\:\:\:/,$entry);
592: my ($map,$ind,$url)=&Apache::lonnet::decode_symb($symb);
593:
594: my %contrib=&Apache::lonnet::restore($symb,$ENV{'request.course.id'},
595: $ENV{'course.'.$ENV{'request.course.id'}.'.domain'},
596: $ENV{'course.'.$ENV{'request.course.id'}.'.num'});
597:
598:
599: my $currenthidden=$contrib{'hidden'};
600:
601: if ($ENV{'form.hide'}) {
602: $currenthidden.='.'.$idx.'.';
603: } else {
604: $currenthidden=~s/\.$idx\.//g;
605: }
606: my %newhash=('hidden' => $currenthidden);
607:
608: &Apache::lonnet::store(\%newhash,$symb,$ENV{'request.course.id'},
609: $ENV{'course.'.$ENV{'request.course.id'}.'.domain'},
610: $ENV{'course.'.$ENV{'request.course.id'}.'.num'});
611:
612: &redirect_back($r,&Apache::lonnet::clutter($url),
613: &mt('Changed discussion status').'<br />','0','0');
614: } elsif ($ENV{'form.deldisc'}) {
615: # --------------------------------------------------------------- Hide for good
616: $r->content_type('text/html');
617: $r->send_http_header;
618:
619: my $entry=$ENV{'form.deldisc'};
620:
621: my ($symb,$idx)=split(/\:\:\:/,$entry);
622: my ($map,$ind,$url)=&Apache::lonnet::decode_symb($symb);
623:
624: my %contrib=&Apache::lonnet::restore($symb,$ENV{'request.course.id'},
625: $ENV{'course.'.$ENV{'request.course.id'}.'.domain'},
626: $ENV{'course.'.$ENV{'request.course.id'}.'.num'});
627:
628:
629: my $currentdeleted=$contrib{'deleted'};
630:
631: $currentdeleted.='.'.$idx.'.';
632:
633: my %newhash=('deleted' => $currentdeleted);
634:
635: &Apache::lonnet::store(\%newhash,$symb,$ENV{'request.course.id'},
636: $ENV{'course.'.$ENV{'request.course.id'}.'.domain'},
637: $ENV{'course.'.$ENV{'request.course.id'}.'.num'});
638:
639: &redirect_back($r,&Apache::lonnet::clutter($url),
640: &mt('Changed discussion status').'<br />','0','0');
641: } elsif ($ENV{'form.preview'}) {
642: # -------------------------------------------------------- User wants a preview
643: &show_preview($r);
644: } else {
645: # ------------------------------------------------------------- Normal feedback
646: my $feedurl=$ENV{'form.postdata'};
647: $feedurl=~s/^http\:\/\///;
648: $feedurl=~s/^$ENV{'SERVER_NAME'}//;
649: $feedurl=~s/^$ENV{'HTTP_HOST'}//;
650: $feedurl=~s/\?.+$//;
651:
652: my $symb=&Apache::lonnet::symbread($feedurl);
653: unless ($symb) {
654: $symb=$ENV{'form.symb'};
655: if ($symb) {
656: my ($map,$id,$url)=&Apache::lonnet::decode_symb($symb);
657: $feedurl=&Apache::lonnet::clutter($url);
658: }
659: }
660: my $goahead=1;
661: if ($feedurl=~/\.(problem|exam|quiz|assess|survey|form)$/) {
662: unless ($symb) { $goahead=0; }
663: }
664:
665: if ($goahead) {
666: # Go ahead with feedback, no ambiguous reference
667: $r->content_type('text/html');
668: $r->send_http_header;
669:
670: if (
671: (
672: ($feedurl=~m:^/res:) && ($feedurl!~m:^/res/adm:)
673: )
674: ||
675: ($ENV{'request.course.id'} && ($feedurl!~m:^/adm:))
676: ||
677: ($ENV{'request.course.id'} && ($symb=~/^bulletin\_\_\_/))
678: ) {
679: # --------------------------------------------------- Print login screen header
680: unless ($ENV{'form.sendit'}) {
681: my $options=&screen_header($feedurl);
682: if ($options) {
683: &mail_screen($r,$feedurl,$options);
684: } else {
685: &fail_redirect($r,$feedurl);
686: }
687: } else {
688:
689: # Get previous user input
690: my $prevattempts=&Apache::loncommon::get_previous_attempt(
691: $symb,$ENV{'user.name'},$ENV{'user.domain'},
692: $ENV{'request.course.id'});
693:
694: # Get output from resource
695: my $usersaw=&resource_output($feedurl);
696:
697: # Get resource answer (need to allow student to view grades for this to work)
698: &Apache::lonnet::appenv(('allowed.vgr'=>'F'));
699: my $useranswer=&Apache::loncommon::get_student_answers(
700: $symb,$ENV{'user.name'},$ENV{'user.domain'},
701: $ENV{'request.course.id'});
702: &Apache::lonnet::delenv('allowed.vgr');
703: # Get attachments, if any, and not too large
704: my $attachmenturl='';
705: if ($ENV{'form.attachment.filename'}) {
706: unless (length($ENV{'form.attachment'})>131072) {
707: $attachmenturl=&Apache::lonnet::userfileupload('attachment');
708: }
709: }
710: # Filter HTML out of message (could be nasty)
711: my $message=&clear_out_html($ENV{'form.comment'});
712:
713: # Assemble email
714: my ($email,$citations)=&assemble_email($feedurl,$message,$prevattempts,
715: $usersaw,$useranswer);
716:
717: # Who gets this?
718: my ($typestyle,%to) = &decide_receiver($feedurl);
719:
720: # Actually send mail
721: my ($status,$numsent)=&send_msg($feedurl,$email,$citations,
722: $attachmenturl,%to);
723:
724: # Discussion? Store that.
725:
726: my $numpost=0;
727: if ($ENV{'form.discuss'}) {
728: $typestyle.=&adddiscuss($symb,$message,0,$attachmenturl);
729: $numpost++;
730: }
731:
732: if ($ENV{'form.anondiscuss'}) {
733: $typestyle.=&adddiscuss($symb,$message,1,$attachmenturl);
734: $numpost++;
735: }
736:
737:
738: # Receipt screen and redirect back to where came from
739: &redirect_back($r,$feedurl,$typestyle,$numsent,$numpost,$status);
740:
741: }
742: } else {
743: # Unable to give feedback
744: &no_redirect_back($r,$feedurl);
745: }
746: } else {
747: # Ambiguous Problem Resource
748: if ( &Apache::lonnet::mod_perl_version() == 2 ) {
749: &Apache::lonnet::cleanenv();
750: }
751: $r->internal_redirect('/adm/ambiguous');
752: }
753: }
754: return OK;
755: }
756:
757: 1;
758: __END__
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