1: # The LearningOnline Network
2: # Feedback
3: #
4: # $Id: lonfeedback.pm,v 1.62 2003/10/15 20:01:48 www 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>';
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>
186: function gosubmit() {
187: var rec=0;
188: if (typeof(document.mailform.elements.author)!="undefined") {
189: if (document.mailform.elements.author.checked) {
190: rec=1;
191: }
192: }
193: if (typeof(document.mailform.elements.question)!="undefined") {
194: if (document.mailform.elements.question.checked) {
195: rec=1;
196: }
197: }
198: if (typeof(document.mailform.elements.course)!="undefined") {
199: if (document.mailform.elements.course.checked) {
200: rec=1;
201: }
202: }
203: if (typeof(document.mailform.elements.policy)!="undefined") {
204: if (document.mailform.elements.policy.checked) {
205: rec=1;
206: }
207: }
208: if (typeof(document.mailform.elements.discuss)!="undefined") {
209: if (document.mailform.elements.discuss.checked) {
210: rec=1;
211: }
212: }
213: if (typeof(document.mailform.elements.anondiscuss)!="undefined") {
214: if (document.mailform.elements.anondiscuss.checked) {
215: rec=1;
216: }
217: }
218:
219: if (rec) {
220: document.mailform.submit();
221: } else {
222: alert('Please check a feedback type.');
223: }
224: }
225: </script>
226: </head>
227: $bodytag
228: <h2><tt>$title</tt></h2>
229: <form action="/adm/feedback" method="post" name="mailform"
230: enctype="multipart/form-data">
231: <input type=hidden name=postdata value="$feedurl">
232: Please check at least one of the following feedback types:
233: $options<hr>
234: My question/comment/feedback:<p>
235: $latexHelp
236: <textarea name=comment cols=60 rows=10 wrap=hard>
237: </textarea><p>
238: Attachment (128 KB max size): <input type="file" name="attachment" />
239: </p>
240: <p>
241: <input type="hidden" name="sendit" value="1" />
242: <input type=button value="Send Feedback" onClick='gosubmit();' />
243: </p>
244: </form>
245: ENDDOCUMENT
246: $r->print(&generate_preview_button().'</body></html>');
247: }
248:
249: sub fail_redirect {
250: my ($r,$feedurl) = @_;
251: $r->print (<<ENDFAILREDIR);
252: <head><title>Feedback not sent</title>
253: <meta http-equiv="pragma" content="no-cache"></meta>
254: <meta HTTP-EQUIV="Refresh" CONTENT="2; url=$feedurl">
255: </head>
256: <html>
257: <body bgcolor="#FFFFFF">
258: <img align=right src=/adm/lonIcons/lonlogos.gif>
259: <b>Sorry, no recipients ...</b>
260: </body>
261: </html>
262: ENDFAILREDIR
263: }
264:
265: sub redirect_back {
266: my ($r,$feedurl,$typestyle,$sendsomething,$sendposts,$status) = @_;
267: $r->print (<<ENDREDIR);
268: <head>
269: <title>Feedback sent</title>
270: <meta http-equiv="pragma" content="no-cache"></meta>
271: <meta HTTP-EQUIV="Refresh" CONTENT="2; url=$feedurl">
272: </head>
273: <html>
274: <body bgcolor="#FFFFFF" onLoad='if (window.name!="loncapaclient") { this.document.reldt.submit(); self.close(); }'>
275: <img align=right src=/adm/lonIcons/lonlogos.gif>
276: $typestyle
277: <b>Sent $sendsomething message(s), and $sendposts post(s).</b>
278: <font color=red>$status</font>
279: <form name="reldt" action="$feedurl" target="loncapaclient">
280: </form>
281: </body>
282: </html>
283: ENDREDIR
284: }
285:
286: sub no_redirect_back {
287: my ($r,$feedurl) = @_;
288: $r->print (<<ENDNOREDIR);
289: <head><title>Feedback not sent</title>
290: <meta http-equiv="pragma" content="no-cache"></meta>
291: ENDNOREDIR
292:
293: if ($feedurl!~/^\/adm\/feedback/) {
294: $r->print('<meta HTTP-EQUIV="Refresh" CONTENT="2; url='.$feedurl.'">');
295: }
296:
297: $r->print (<<ENDNOREDIRTWO);
298: </head>
299: <html>
300: <body bgcolor="#FFFFFF" onLoad='if (window.name!="loncapaclient") { self.close(); }'>
301: <img align=right src=/adm/lonIcons/lonlogos.gif>
302: <b>Sorry, no feedback possible on this resource ...</b>
303: </body>
304: </html>
305: ENDNOREDIRTWO
306: }
307:
308: sub screen_header {
309: my ($feedurl) = @_;
310: my $msgoptions='';
311: my $discussoptions='';
312: if (($feedurl=~/^\/res\//) && ($feedurl!~/^\/res\/adm/)) {
313: $msgoptions=
314: '<p><input type=checkbox name=author> '.
315: &mt('Feedback to resource author');
316: }
317: if (&feedback_available(1)) {
318: $msgoptions.=
319: '<br><input type=checkbox name=question> '.
320: &mt('Question about resource content');
321: }
322: if (&feedback_available(0,1)) {
323: $msgoptions.=
324: '<br><input type=checkbox name=course> '.
325: &mt('Question/Comment/Feedback about course content');
326: }
327: if (&feedback_available(0,0,1)) {
328: $msgoptions.=
329: '<br><input type=checkbox name=policy> '.
330: &mt('Question/Comment/Feedback about course policy');
331: }
332:
333: if ($ENV{'request.course.id'}) {
334: if (&Apache::lonnet::allowed('pch',
335: $ENV{'request.course.id'}.
336: ($ENV{'request.course.sec'}?'/'.$ENV{'request.course.sec'}:''))) {
337: $discussoptions='<input type="checkbox" name="discuss" onClick="this.form.anondiscuss.checked=false;"> '.
338: &mt('Contribution to course discussion of resource');
339: $discussoptions.='<br><input type="checkbox" name="anondiscuss" onClick="this.form.discuss.checked=false;"> '.
340: &mt('Anonymous contribution to course discussion of resource').
341: ' <i>('.&mt('name only visible to course faculty').')</i>';
342: }
343: }
344: if ($msgoptions) { $msgoptions='<h2>'.&mt('Sending Messages').'</h2>'.$msgoptions; }
345: if ($discussoptions) {
346: $discussoptions='<h2>'.&mt('Discussion Contributions').'</h2>'.$discussoptions; }
347: return $msgoptions.$discussoptions;
348: }
349:
350: sub resource_output {
351: my ($feedurl) = @_;
352: my $usersaw=&Apache::lonnet::ssi_body($feedurl);
353: $usersaw=~s/\<body[^\>]*\>//gi;
354: $usersaw=~s/\<\/body\>//gi;
355: $usersaw=~s/\<html\>//gi;
356: $usersaw=~s/\<\/html\>//gi;
357: $usersaw=~s/\<head\>//gi;
358: $usersaw=~s/\<\/head\>//gi;
359: $usersaw=~s/action\s*\=/would_be_action\=/gi;
360: return $usersaw;
361: }
362:
363: sub clear_out_html {
364: my ($message,$override)=@_;
365: my $cid=$ENV{'request.course.id'};
366: if (($ENV{"course.$cid.allow_limited_html_in_feedback"} =~ m/yes/i) ||
367: ($override)) {
368: # allows <B> <I> <P> <A> <LI> <OL> <UL> <EM> <BR> <TT> <STRONG>
369: # <BLOCKQUOTE> <DIV .*> <DIV> <IMG>
370: my %html=(B=>1, I=>1, P=>1, A=>1, LI=>1, OL=>1, UL=>1, EM=>1,
371: BR=>1, TT=>1, STRONG=>1, BLOCKQUOTE=>1, DIV=>1, IMG=>1,
372: M=>1);
373:
374: $message =~ s/\<(\/?\s*(\w+)[^\>\<]*)/
375: {($html{uc($2)}&&(length($1)<1000))?"\<$1":"\<$1"}/ge;
376: $message =~ s/(\<?\s*(\w+)[^\<\>]*)\>/
377: {($html{uc($2)}&&(length($1)<1000))?"$1\>":"$1\>"}/ge;
378: } else {
379: $message=~s/\</\<\;/g;
380: $message=~s/\>/\>\;/g;
381: }
382: return $message;
383: }
384:
385: sub assemble_email {
386: my ($feedurl,$message,$prevattempts,$usersaw,$useranswer)=@_;
387: my $email=<<"ENDEMAIL";
388: Refers to <a href="$feedurl">$feedurl</a>
389:
390: $message
391: ENDEMAIL
392: my $citations=<<"ENDCITE";
393: <h2>Previous attempts of student (if applicable)</h2>
394: $prevattempts
395: <p><hr>
396: <h2>Original screen output (if applicable)</h2>
397: $usersaw
398: <h2>Correct Answer(s) (if applicable)</h2>
399: $useranswer
400: ENDCITE
401: return ($email,$citations);
402: }
403:
404: sub secapply {
405: my $rec=shift;
406: my $defaultflag=shift;
407: $rec=~s/\s+//g;
408: $rec=~s/\@/\:/g;
409: my ($adr,$sections)=($rec=~/^([^\(]+)\(([^\)]+)\)/);
410: if ($sections) {
411: foreach (split(/\;/,$sections)) {
412: if (($_ eq $ENV{'request.course.sec'}) ||
413: ($defaultflag && ($_ eq '*'))) {
414: return $adr;
415: }
416: }
417: } else {
418: return $rec;
419: }
420: return '';
421: }
422:
423: sub decide_receiver {
424: my ($feedurl,$author,$question,$course,$policy,$defaultflag) = @_;
425: my $typestyle='';
426: my %to=();
427: if ($ENV{'form.author'}||$author) {
428: $typestyle.='Submitting as Author Feedback<br>';
429: $feedurl=~/^\/res\/(\w+)\/(\w+)\//;
430: $to{$2.':'.$1}=1;
431: }
432: if ($ENV{'form.question'}||$question) {
433: $typestyle.='Submitting as Question<br>';
434: foreach (split(/\,/,
435: $ENV{'course.'.$ENV{'request.course.id'}.'.question.email'})
436: ) {
437: my $rec=&secapply($_,$defaultflag);
438: if ($rec) { $to{$rec}=1; }
439: }
440: }
441: if ($ENV{'form.course'}||$course) {
442: $typestyle.='Submitting as Comment<br>';
443: foreach (split(/\,/,
444: $ENV{'course.'.$ENV{'request.course.id'}.'.comment.email'})
445: ) {
446: my $rec=&secapply($_,$defaultflag);
447: if ($rec) { $to{$rec}=1; }
448: }
449: }
450: if ($ENV{'form.policy'}||$policy) {
451: $typestyle.='Submitting as Policy Feedback<br>';
452: foreach (split(/\,/,
453: $ENV{'course.'.$ENV{'request.course.id'}.'.policy.email'})
454: ) {
455: my $rec=&secapply($_,$defaultflag);
456: if ($rec) { $to{$rec}=1; }
457: }
458: }
459: if ((scalar(%to) eq '0') && (!$defaultflag)) {
460: ($typestyle,%to)=
461: &decide_receiver($feedurl,$author,$question,$course,$policy,1);
462: }
463: return ($typestyle,%to);
464: }
465:
466: sub feedback_available {
467: my ($question,$course,$policy)=@_;
468: my ($typestyle,%to)=&decide_receiver('',0,$question,$course,$policy);
469: return scalar(%to);
470: }
471:
472: sub send_msg {
473: my ($feedurl,$email,$citations,$attachmenturl,%to)=@_;
474: my $status='';
475: my $sendsomething=0;
476: foreach (keys %to) {
477: if ($_) {
478: my $declutter=&Apache::lonnet::declutter($feedurl);
479: unless (&Apache::lonmsg::user_normal_msg(split(/\:/,$_),
480: 'Feedback ['.$declutter.']',$email,$citations,$feedurl,
481: $attachmenturl)=~/ok/) {
482: $status.='<br>'.&mt('Error sending message to').' '.$_.'<br>';
483: } else {
484: $sendsomething++;
485: }
486: }
487: }
488:
489: my %record=&Apache::lonnet::restore('_feedback');
490: my ($temp)=keys %record;
491: unless ($temp=~/^error\:/) {
492: my %newrecord=();
493: $newrecord{'resource'}=$feedurl;
494: $newrecord{'subnumber'}=$record{'subnumber'}+1;
495: unless (&Apache::lonnet::cstore(\%newrecord,'_feedback') eq 'ok') {
496: $status.='<br>'.&mt('Not registered').'<br>';
497: }
498: }
499:
500: return ($status,$sendsomething);
501: }
502:
503: sub adddiscuss {
504: my ($symb,$email,$anon,$attachmenturl)=@_;
505: my $status='';
506: if (&Apache::lonnet::allowed('pch',$ENV{'request.course.id'}.
507: ($ENV{'request.course.sec'}?'/'.$ENV{'request.course.sec'}:''))) {
508:
509: my %contrib=('message' => $email,
510: 'sendername' => $ENV{'user.name'},
511: 'senderdomain' => $ENV{'user.domain'},
512: 'screenname' => $ENV{'environment.screenname'},
513: 'plainname' => $ENV{'environment.firstname'}.' '.
514: $ENV{'environment.middlename'}.' '.
515: $ENV{'environment.lastname'}.' '.
516: $ENV{'enrironment.generation'},
517: 'attachmenturl'=> $attachmenturl);
518: if ($anon) {
519: $contrib{'anonymous'}='true';
520: }
521: if (($symb) && ($email)) {
522: $status='Adding to class discussion'.($anon?' (anonymous)':'').': '.
523: &Apache::lonnet::store(\%contrib,$symb,$ENV{'request.course.id'},
524: $ENV{'course.'.$ENV{'request.course.id'}.'.domain'},
525: $ENV{'course.'.$ENV{'request.course.id'}.'.num'});
526: my %storenewentry=($symb => time);
527: $status.='<br>'.&mt('Updating discussion time').': '.
528: &Apache::lonnet::put('discussiontimes',\%storenewentry,
529: $ENV{'course.'.$ENV{'request.course.id'}.'.domain'},
530: $ENV{'course.'.$ENV{'request.course.id'}.'.num'});
531: }
532: my %record=&Apache::lonnet::restore('_discussion');
533: my ($temp)=keys %record;
534: unless ($temp=~/^error\:/) {
535: my %newrecord=();
536: $newrecord{'resource'}=$symb;
537: $newrecord{'subnumber'}=$record{'subnumber'}+1;
538: $status.='<br>'.&mt('Registering').': '.
539: &Apache::lonnet::cstore(\%newrecord,'_discussion');
540: }
541: } else {
542: $status.='Failed.';
543: }
544: return $status.'<br>';
545: }
546:
547: # ----------------------------------------------------------- Preview function
548:
549: sub show_preview {
550: my $r=shift;
551: my $message=&clear_out_html($ENV{'form.comment'});
552: $message=~s/\n/\<br \/\>/g;
553: $message=&Apache::lontexconvert::msgtexconverted($message);
554: $r->print('<table border="2"><tr><td>'.
555: $message.'</td></tr></table>');
556: }
557:
558: sub generate_preview_button {
559: return(<<ENDPREVIEW);
560: <form name="preview" action="/adm/feedback?preview=1" method="post" target="preview">
561: <input type="hidden" name="comment" />
562: <input type="button" value="Show Preview"
563: onClick="this.form.comment.value=document.mailform.comment.value;this.form.submit();" />
564: </form>
565: ENDPREVIEW
566: }
567: sub handler {
568: my $r = shift;
569: if ($r->header_only) {
570: $r->content_type('text/html');
571: $r->send_http_header;
572: return OK;
573: }
574:
575: # --------------------------- Get query string for limited number of parameters
576:
577: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
578: ['hide','unhide','deldisc','postdata','preview']);
579:
580: if (($ENV{'form.hide'}) || ($ENV{'form.unhide'})) {
581: # ----------------------------------------------------------------- Hide/unhide
582: $r->content_type('text/html');
583: $r->send_http_header;
584:
585: my $entry=$ENV{'form.hide'}?$ENV{'form.hide'}:$ENV{'form.unhide'};
586:
587: my ($symb,$idx)=split(/\:\:\:/,$entry);
588: my ($map,$ind,$url)=&Apache::lonnet::decode_symb($symb);
589:
590: my %contrib=&Apache::lonnet::restore($symb,$ENV{'request.course.id'},
591: $ENV{'course.'.$ENV{'request.course.id'}.'.domain'},
592: $ENV{'course.'.$ENV{'request.course.id'}.'.num'});
593:
594:
595: my $currenthidden=$contrib{'hidden'};
596:
597: if ($ENV{'form.hide'}) {
598: $currenthidden.='.'.$idx.'.';
599: } else {
600: $currenthidden=~s/\.$idx\.//g;
601: }
602: my %newhash=('hidden' => $currenthidden);
603:
604: &Apache::lonnet::store(\%newhash,$symb,$ENV{'request.course.id'},
605: $ENV{'course.'.$ENV{'request.course.id'}.'.domain'},
606: $ENV{'course.'.$ENV{'request.course.id'}.'.num'});
607:
608: &redirect_back($r,&Apache::lonnet::clutter($url),
609: &mt('Changed discussion status').'<p>','0','0');
610: } elsif ($ENV{'form.deldisc'}) {
611: # --------------------------------------------------------------- Hide for good
612: $r->content_type('text/html');
613: $r->send_http_header;
614:
615: my $entry=$ENV{'form.deldisc'};
616:
617: my ($symb,$idx)=split(/\:\:\:/,$entry);
618: my ($map,$ind,$url)=&Apache::lonnet::decode_symb($symb);
619:
620: my %contrib=&Apache::lonnet::restore($symb,$ENV{'request.course.id'},
621: $ENV{'course.'.$ENV{'request.course.id'}.'.domain'},
622: $ENV{'course.'.$ENV{'request.course.id'}.'.num'});
623:
624:
625: my $currentdeleted=$contrib{'deleted'};
626:
627: $currentdeleted.='.'.$idx.'.';
628:
629: my %newhash=('deleted' => $currentdeleted);
630:
631: &Apache::lonnet::store(\%newhash,$symb,$ENV{'request.course.id'},
632: $ENV{'course.'.$ENV{'request.course.id'}.'.domain'},
633: $ENV{'course.'.$ENV{'request.course.id'}.'.num'});
634:
635: &redirect_back($r,&Apache::lonnet::clutter($url),
636: &mt('Changed discussion status').'<p>','0','0');
637: } elsif ($ENV{'form.preview'}) {
638: # -------------------------------------------------------- User wants a preview
639: &show_preview($r);
640: } else {
641: # ------------------------------------------------------------- Normal feedback
642: my $feedurl=$ENV{'form.postdata'};
643: $feedurl=~s/^http\:\/\///;
644: $feedurl=~s/^$ENV{'SERVER_NAME'}//;
645: $feedurl=~s/^$ENV{'HTTP_HOST'}//;
646: $feedurl=~s/\?.+$//;
647:
648: my $symb=&Apache::lonnet::symbread($feedurl);
649: unless ($symb) {
650: $symb=$ENV{'form.symb'};
651: if ($symb) {
652: my ($map,$id,$url)=&Apache::lonnet::decode_symb($symb);
653: $feedurl=&Apache::lonnet::clutter($url);
654: }
655: }
656: my $goahead=1;
657: if ($feedurl=~/\.(problem|exam|quiz|assess|survey|form)$/) {
658: unless ($symb) { $goahead=0; }
659: }
660:
661: if ($goahead) {
662: # Go ahead with feedback, no ambiguous reference
663: $r->content_type('text/html');
664: $r->send_http_header;
665:
666: if (
667: (
668: ($feedurl=~m:^/res:) && ($feedurl!~m:^/res/adm:)
669: )
670: ||
671: ($ENV{'request.course.id'} && ($feedurl!~m:^/adm:))
672: ||
673: ($ENV{'request.course.id'} && ($symb=~/^bulletin\_\_\_/))
674: ) {
675: # --------------------------------------------------- Print login screen header
676: unless ($ENV{'form.sendit'}) {
677: my $options=&screen_header($feedurl);
678: if ($options) {
679: &mail_screen($r,$feedurl,$options);
680: } else {
681: &fail_redirect($r,$feedurl);
682: }
683: } else {
684:
685: # Get previous user input
686: my $prevattempts=&Apache::loncommon::get_previous_attempt(
687: $symb,$ENV{'user.name'},$ENV{'user.domain'},
688: $ENV{'request.course.id'});
689:
690: # Get output from resource
691: my $usersaw=&resource_output($feedurl);
692:
693: # Get resource answer (need to allow student to view grades for this to work)
694: &Apache::lonnet::appenv(('allowed.vgr'=>'F'));
695: my $useranswer=&Apache::loncommon::get_student_answers(
696: $symb,$ENV{'user.name'},$ENV{'user.domain'},
697: $ENV{'request.course.id'});
698: &Apache::lonnet::delenv('allowed.vgr');
699: # Get attachments, if any, and not too large
700: my $attachmenturl='';
701: if ($ENV{'form.attachment.filename'}) {
702: unless (length($ENV{'form.attachment'})>131072) {
703: $attachmenturl=&Apache::lonnet::userfileupload('attachment');
704: }
705: }
706: # Filter HTML out of message (could be nasty)
707: my $message=&clear_out_html($ENV{'form.comment'});
708:
709: # Assemble email
710: my ($email,$citations)=&assemble_email($feedurl,$message,$prevattempts,
711: $usersaw,$useranswer);
712:
713: # Who gets this?
714: my ($typestyle,%to) = &decide_receiver($feedurl);
715:
716: # Actually send mail
717: my ($status,$numsent)=&send_msg($feedurl,$email,$citations,
718: $attachmenturl,%to);
719:
720: # Discussion? Store that.
721:
722: my $numpost=0;
723: if ($ENV{'form.discuss'}) {
724: $typestyle.=&adddiscuss($symb,$message,0,$attachmenturl);
725: $numpost++;
726: }
727:
728: if ($ENV{'form.anondiscuss'}) {
729: $typestyle.=&adddiscuss($symb,$message,1,$attachmenturl);
730: $numpost++;
731: }
732:
733:
734: # Receipt screen and redirect back to where came from
735: &redirect_back($r,$feedurl,$typestyle,$numsent,$numpost,$status);
736:
737: }
738: } else {
739: # Unable to give feedback
740: &no_redirect_back($r,$feedurl);
741: }
742: } else {
743: # Ambiguous Problem Resource
744: if ( &Apache::lonnet::mod_perl_version() == 2 ) {
745: &Apache::lonnet::cleanenv();
746: }
747: $r->internal_redirect('/adm/ambiguous');
748: }
749: }
750: return OK;
751: }
752:
753: 1;
754: __END__
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