1: # The LearningOnline Network
2: # Feedback
3: #
4: # $Id: lonfeedback.pm,v 1.60 2003/09/17 18:16:39 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:
55: sub list_discussion {
56: my ($mode,$status,$symb)=@_;
57: my $discussiononly=0;
58: if ($mode eq 'board') { $discussiononly=1; }
59: unless ($ENV{'request.course.id'}) { return ''; }
60: my $crs='/'.$ENV{'request.course.id'};
61: if ($ENV{'request.course.sec'}) {
62: $crs.='_'.$ENV{'request.course.sec'};
63: }
64: $crs=~s/\_/\//g;
65: unless ($symb) {
66: $symb=&Apache::lonnet::symbread();
67: }
68: unless ($symb) { return ''; }
69: my $seeid=&Apache::lonnet::allowed('rin',$crs);
70: my $viewgrades=&Apache::lonnet::allowed('vgr',$crs);
71: my $discussion='';
72: my %contrib=&Apache::lonnet::restore($symb,$ENV{'request.course.id'},
73: $ENV{'course.'.$ENV{'request.course.id'}.'.domain'},
74: $ENV{'course.'.$ENV{'request.course.id'}.'.num'});
75: if ($contrib{'version'}) {
76: unless ($discussiononly) {
77: $discussion.=
78: '<address><hr />';
79: }
80: my $idx;
81: for ($idx=1;$idx<=$contrib{'version'};$idx++) {
82: my $hidden=($contrib{'hidden'}=~/\.$idx\./);
83: my $deleted=($contrib{'deleted'}=~/\.$idx\./);
84: unless ((($hidden) && (!$seeid)) || ($deleted)) {
85: my $message=$contrib{$idx.':message'};
86: $message=~s/\n/\<br \/\>/g;
87: $message=&Apache::lontexconvert::msgtexconverted($message);
88: if ($contrib{$idx.':attachmenturl'}) {
89: my ($fname,$ft)
90: =($contrib{$idx.':attachmenturl'}=~/\/(\w+)\.(\w+)$/);
91: $message.='<p>Attachment: <a href="'.
92: &Apache::lonnet::tokenwrapper(
93: $contrib{$idx.':attachmenturl'}).
94: '"><tt>'.$fname.'.'.$ft.'</tt></a>';
95: }
96: if ($message) {
97: if ($hidden) {
98: $message='<font color="#888888">'.$message.'</font>';
99: }
100: my $screenname=&Apache::loncommon::screenname(
101: $contrib{$idx.':sendername'},
102: $contrib{$idx.':senderdomain'});
103: my $plainname=&Apache::loncommon::nickname(
104: $contrib{$idx.':sendername'},
105: $contrib{$idx.':senderdomain'});
106:
107: my $sender='Anonymous';
108: if ((!$contrib{$idx.':anonymous'}) || ($seeid)) {
109: $sender=&Apache::loncommon::aboutmewrapper(
110: $plainname,
111: $contrib{$idx.':sendername'},
112: $contrib{$idx.':senderdomain'}).' ('.
113: $contrib{$idx.':sendername'}.' at '.
114: $contrib{$idx.':senderdomain'}.')';
115: if ($contrib{$idx.':anonymous'}) {
116: $sender.=' [anonymous] '.
117: $screenname;
118: }
119: if ($seeid) {
120: if ($hidden) {
121: $sender.=' <a href="/adm/feedback?unhide='.
122: $symb.':::'.$idx.'">Make Visible</a>';
123: } else {
124: $sender.=' <a href="/adm/feedback?hide='.
125: $symb.':::'.$idx.'">Hide</a>';
126: }
127: $sender.=' <a href="/adm/feedback?deldisc='.
128: $symb.':::'.$idx.'">Delete</a>';
129: }
130: } else {
131: if ($screenname) {
132: $sender='<i>'.$screenname.'</i>';
133: }
134: }
135: my $vgrlink;
136: if ($viewgrades) {
137: $vgrlink=&Apache::loncommon::submlink('Submissions',
138: $contrib{$idx.':sendername'},$contrib{$idx.':senderdomain'},$symb);
139: }
140: $discussion.='<p><b>'.$sender.'</b> '.$vgrlink.' ('.
141: localtime($contrib{$idx.':timestamp'}).
142: '):<blockquote>'.$message.
143: '</blockquote></p>';
144: }
145: }
146: }
147: unless ($discussiononly) {
148: $discussion.='</address>';
149: }
150: }
151: if ($discussiononly) {
152: $discussion.=(<<ENDDISCUSS);
153: <form action="/adm/feedback" method="post" name="mailform" enctype="multipart/form-data">
154: <input type="submit" name="discuss" value="Post Discussion" />
155: <input type="submit" name="anondiscuss" value="Post Anonymous Discussion" />
156: <input type="hidden" name="symb" value="$symb" />
157: <input type="hidden" name="sendit" value="true" />
158: <br />
159: <font size="1">Note: in anonymous discussion, your name is visible only to
160: course faculty</font><br />
161: <textarea name=comment cols=60 rows=10 wrap=hard></textarea>
162: <p>
163: Attachment (128 KB max size): <input type="file" name="attachment" />
164: </p>
165: </form>
166: ENDDISCUSS
167: $discussion.=&generate_preview_button();
168: }
169: return $discussion;
170: }
171:
172: sub mail_screen {
173: my ($r,$feedurl,$options) = @_;
174: my $bodytag=&Apache::loncommon::bodytag('Resource Feedback and Discussion',
175: '','onLoad="window.focus();"');
176: my $title=&Apache::lonnet::gettitle($feedurl);
177: if (!$title) { $title = $feedurl; }
178: my $latexHelp = Apache::loncommon::helpLatexCheatsheet();
179: $r->print(<<ENDDOCUMENT);
180: <html>
181: <head>
182: <title>The LearningOnline Network with CAPA</title>
183: <meta http-equiv="pragma" content="no-cache"></meta>
184: <script>
185: function gosubmit() {
186: var rec=0;
187: if (typeof(document.mailform.elements.author)!="undefined") {
188: if (document.mailform.elements.author.checked) {
189: rec=1;
190: }
191: }
192: if (typeof(document.mailform.elements.question)!="undefined") {
193: if (document.mailform.elements.question.checked) {
194: rec=1;
195: }
196: }
197: if (typeof(document.mailform.elements.course)!="undefined") {
198: if (document.mailform.elements.course.checked) {
199: rec=1;
200: }
201: }
202: if (typeof(document.mailform.elements.policy)!="undefined") {
203: if (document.mailform.elements.policy.checked) {
204: rec=1;
205: }
206: }
207: if (typeof(document.mailform.elements.discuss)!="undefined") {
208: if (document.mailform.elements.discuss.checked) {
209: rec=1;
210: }
211: }
212: if (typeof(document.mailform.elements.anondiscuss)!="undefined") {
213: if (document.mailform.elements.anondiscuss.checked) {
214: rec=1;
215: }
216: }
217:
218: if (rec) {
219: document.mailform.submit();
220: } else {
221: alert('Please check a feedback type.');
222: }
223: }
224: </script>
225: </head>
226: $bodytag
227: <h2><tt>$title</tt></h2>
228: <form action="/adm/feedback" method="post" name="mailform"
229: enctype="multipart/form-data">
230: <input type=hidden name=postdata value="$feedurl">
231: Please check at least one of the following feedback types:
232: $options<hr>
233: My question/comment/feedback:<p>
234: $latexHelp
235: <textarea name=comment cols=60 rows=10 wrap=hard>
236: </textarea><p>
237: Attachment (128 KB max size): <input type="file" name="attachment" />
238: </p>
239: <p>
240: <input type="hidden" name="sendit" value="1" />
241: <input type=button value="Send Feedback" onClick='gosubmit();' />
242: </p>
243: </form>
244: ENDDOCUMENT
245: $r->print(&generate_preview_button().'</body></html>');
246: }
247:
248: sub fail_redirect {
249: my ($r,$feedurl) = @_;
250: $r->print (<<ENDFAILREDIR);
251: <head><title>Feedback not sent</title>
252: <meta http-equiv="pragma" content="no-cache"></meta>
253: <meta HTTP-EQUIV="Refresh" CONTENT="2; url=$feedurl">
254: </head>
255: <html>
256: <body bgcolor="#FFFFFF">
257: <img align=right src=/adm/lonIcons/lonlogos.gif>
258: <b>Sorry, no recipients ...</b>
259: </body>
260: </html>
261: ENDFAILREDIR
262: }
263:
264: sub redirect_back {
265: my ($r,$feedurl,$typestyle,$sendsomething,$sendposts,$status) = @_;
266: $r->print (<<ENDREDIR);
267: <head>
268: <title>Feedback sent</title>
269: <meta http-equiv="pragma" content="no-cache"></meta>
270: <meta HTTP-EQUIV="Refresh" CONTENT="2; url=$feedurl">
271: </head>
272: <html>
273: <body bgcolor="#FFFFFF" onLoad='if (window.name!="loncapaclient") { this.document.reldt.submit(); self.close(); }'>
274: <img align=right src=/adm/lonIcons/lonlogos.gif>
275: $typestyle
276: <b>Sent $sendsomething message(s), and $sendposts post(s).</b>
277: <font color=red>$status</font>
278: <form name="reldt" action="$feedurl" target="loncapaclient">
279: </form>
280: </body>
281: </html>
282: ENDREDIR
283: }
284:
285: sub no_redirect_back {
286: my ($r,$feedurl) = @_;
287: $r->print (<<ENDNOREDIR);
288: <head><title>Feedback not sent</title>
289: <meta http-equiv="pragma" content="no-cache"></meta>
290: ENDNOREDIR
291:
292: if ($feedurl!~/^\/adm\/feedback/) {
293: $r->print('<meta HTTP-EQUIV="Refresh" CONTENT="2; url='.$feedurl.'">');
294: }
295:
296: $r->print (<<ENDNOREDIRTWO);
297: </head>
298: <html>
299: <body bgcolor="#FFFFFF" onLoad='if (window.name!="loncapaclient") { self.close(); }'>
300: <img align=right src=/adm/lonIcons/lonlogos.gif>
301: <b>Sorry, no feedback possible on this resource ...</b>
302: </body>
303: </html>
304: ENDNOREDIRTWO
305: }
306:
307: sub screen_header {
308: my ($feedurl) = @_;
309: my $msgoptions='';
310: my $discussoptions='';
311: if (($feedurl=~/^\/res\//) && ($feedurl!~/^\/res\/adm/)) {
312: $msgoptions=
313: '<p><input type=checkbox name=author> Feedback to resource author';
314: }
315: if (&feedback_available(1)) {
316: $msgoptions.=
317: '<br><input type=checkbox name=question> Question about resource content';
318: }
319: if (&feedback_available(0,1)) {
320: $msgoptions.=
321: '<br><input type=checkbox name=course> '.
322: 'Question/Comment/Feedback about course content';
323: }
324: if (&feedback_available(0,0,1)) {
325: $msgoptions.=
326: '<br><input type=checkbox name=policy> '.
327: 'Question/Comment/Feedback about course policy';
328: }
329:
330: if ($ENV{'request.course.id'}) {
331: if (&Apache::lonnet::allowed('pch',
332: $ENV{'request.course.id'}.
333: ($ENV{'request.course.sec'}?'/'.$ENV{'request.course.sec'}:''))) {
334: $discussoptions='<input type="checkbox" name="discuss" onClick="this.form.anondiscuss.checked=false;"> '.
335: 'Contribution to course discussion of resource';
336: $discussoptions.='<br><input type="checkbox" name="anondiscuss" onClick="this.form.discuss.checked=false;"> '.
337: 'Anonymous contribution to course discussion of resource'.
338: ' <i>(name only visible to course faculty)</i>';
339: }
340: }
341: if ($msgoptions) { $msgoptions='<h2>Sending Messages</h2>'.$msgoptions; }
342: if ($discussoptions) {
343: $discussoptions='<h2>Discussion Contributions</h2>'.$discussoptions; }
344: return $msgoptions.$discussoptions;
345: }
346:
347: sub resource_output {
348: my ($feedurl) = @_;
349: my $usersaw=&Apache::lonnet::ssi_body($feedurl);
350: $usersaw=~s/\<body[^\>]*\>//gi;
351: $usersaw=~s/\<\/body\>//gi;
352: $usersaw=~s/\<html\>//gi;
353: $usersaw=~s/\<\/html\>//gi;
354: $usersaw=~s/\<head\>//gi;
355: $usersaw=~s/\<\/head\>//gi;
356: $usersaw=~s/action\s*\=/would_be_action\=/gi;
357: return $usersaw;
358: }
359:
360: sub clear_out_html {
361: my ($message,$override)=@_;
362: my $cid=$ENV{'request.course.id'};
363: if (($ENV{"course.$cid.allow_limited_html_in_feedback"} =~ m/yes/i) ||
364: ($override)) {
365: # allows <B> <I> <P> <A> <LI> <OL> <UL> <EM> <BR> <TT> <STRONG>
366: # <BLOCKQUOTE> <DIV .*> <DIV> <IMG>
367: my %html=(B=>1, I=>1, P=>1, A=>1, LI=>1, OL=>1, UL=>1, EM=>1,
368: BR=>1, TT=>1, STRONG=>1, BLOCKQUOTE=>1, DIV=>1, IMG=>1);
369:
370: $message =~ s/\<(\/?\s*(\w+)[^\>\<]*)/
371: {($html{uc($2)}&&(length($1)<1000))?"\<$1":"\<$1"}/ge;
372: $message =~ s/(\<?\s*(\w+)[^\<\>]*)\>/
373: {($html{uc($2)}&&(length($1)<1000))?"$1\>":"$1\>"}/ge;
374: } else {
375: $message=~s/\<\/*m\s*\>//g;
376: $message=~s/\</\<\;/g;
377: $message=~s/\>/\>\;/g;
378: }
379: return $message;
380: }
381:
382: sub assemble_email {
383: my ($feedurl,$message,$prevattempts,$usersaw,$useranswer)=@_;
384: my $email=<<"ENDEMAIL";
385: Refers to <a href="$feedurl">$feedurl</a>
386:
387: $message
388: ENDEMAIL
389: my $citations=<<"ENDCITE";
390: <h2>Previous attempts of student (if applicable)</h2>
391: $prevattempts
392: <p><hr>
393: <h2>Original screen output (if applicable)</h2>
394: $usersaw
395: <h2>Correct Answer(s) (if applicable)</h2>
396: $useranswer
397: ENDCITE
398: return ($email,$citations);
399: }
400:
401: sub secapply {
402: my $rec=shift;
403: my $defaultflag=shift;
404: $rec=~s/\s+//g;
405: $rec=~s/\@/\:/g;
406: my ($adr,$sections)=($rec=~/^([^\(]+)\(([^\)]+)\)/);
407: if ($sections) {
408: foreach (split(/\;/,$sections)) {
409: if (($_ eq $ENV{'request.course.sec'}) ||
410: ($defaultflag && ($_ eq '*'))) {
411: return $adr;
412: }
413: }
414: } else {
415: return $rec;
416: }
417: return '';
418: }
419:
420: sub decide_receiver {
421: my ($feedurl,$author,$question,$course,$policy,$defaultflag) = @_;
422: my $typestyle='';
423: my %to=();
424: if ($ENV{'form.author'}||$author) {
425: $typestyle.='Submitting as Author Feedback<br>';
426: $feedurl=~/^\/res\/(\w+)\/(\w+)\//;
427: $to{$2.':'.$1}=1;
428: }
429: if ($ENV{'form.question'}||$question) {
430: $typestyle.='Submitting as Question<br>';
431: foreach (split(/\,/,
432: $ENV{'course.'.$ENV{'request.course.id'}.'.question.email'})
433: ) {
434: my $rec=&secapply($_,$defaultflag);
435: if ($rec) { $to{$rec}=1; }
436: }
437: }
438: if ($ENV{'form.course'}||$course) {
439: $typestyle.='Submitting as Comment<br>';
440: foreach (split(/\,/,
441: $ENV{'course.'.$ENV{'request.course.id'}.'.comment.email'})
442: ) {
443: my $rec=&secapply($_,$defaultflag);
444: if ($rec) { $to{$rec}=1; }
445: }
446: }
447: if ($ENV{'form.policy'}||$policy) {
448: $typestyle.='Submitting as Policy Feedback<br>';
449: foreach (split(/\,/,
450: $ENV{'course.'.$ENV{'request.course.id'}.'.policy.email'})
451: ) {
452: my $rec=&secapply($_,$defaultflag);
453: if ($rec) { $to{$rec}=1; }
454: }
455: }
456: if ((scalar(%to) eq '0') && (!$defaultflag)) {
457: ($typestyle,%to)=
458: &decide_receiver($feedurl,$author,$question,$course,$policy,1);
459: }
460: return ($typestyle,%to);
461: }
462:
463: sub feedback_available {
464: my ($question,$course,$policy)=@_;
465: my ($typestyle,%to)=&decide_receiver('',0,$question,$course,$policy);
466: return scalar(%to);
467: }
468:
469: sub send_msg {
470: my ($feedurl,$email,$citations,$attachmenturl,%to)=@_;
471: my $status='';
472: my $sendsomething=0;
473: foreach (keys %to) {
474: if ($_) {
475: my $declutter=&Apache::lonnet::declutter($feedurl);
476: unless (&Apache::lonmsg::user_normal_msg(split(/\:/,$_),
477: 'Feedback ['.$declutter.']',$email,$citations,$feedurl,
478: $attachmenturl)=~/ok/) {
479: $status.='<br>Error sending message to '.$_.'<br>';
480: } else {
481: $sendsomething++;
482: }
483: }
484: }
485:
486: my %record=&Apache::lonnet::restore('_feedback');
487: my ($temp)=keys %record;
488: unless ($temp=~/^error\:/) {
489: my %newrecord=();
490: $newrecord{'resource'}=$feedurl;
491: $newrecord{'subnumber'}=$record{'subnumber'}+1;
492: unless (&Apache::lonnet::cstore(\%newrecord,'_feedback') eq 'ok') {
493: $status.='<br>Not registered<br>';
494: }
495: }
496:
497: return ($status,$sendsomething);
498: }
499:
500: sub adddiscuss {
501: my ($symb,$email,$anon,$attachmenturl)=@_;
502: my $status='';
503: if (&Apache::lonnet::allowed('pch',$ENV{'request.course.id'}.
504: ($ENV{'request.course.sec'}?'/'.$ENV{'request.course.sec'}:''))) {
505:
506: my %contrib=('message' => $email,
507: 'sendername' => $ENV{'user.name'},
508: 'senderdomain' => $ENV{'user.domain'},
509: 'screenname' => $ENV{'environment.screenname'},
510: 'plainname' => $ENV{'environment.firstname'}.' '.
511: $ENV{'environment.middlename'}.' '.
512: $ENV{'environment.lastname'}.' '.
513: $ENV{'enrironment.generation'},
514: 'attachmenturl'=> $attachmenturl);
515: if ($anon) {
516: $contrib{'anonymous'}='true';
517: }
518: if (($symb) && ($email)) {
519: $status='Adding to class discussion'.($anon?' (anonymous)':'').': '.
520: &Apache::lonnet::store(\%contrib,$symb,$ENV{'request.course.id'},
521: $ENV{'course.'.$ENV{'request.course.id'}.'.domain'},
522: $ENV{'course.'.$ENV{'request.course.id'}.'.num'});
523: my %storenewentry=($symb => time);
524: $status.='<br>Updating discussion time: '.
525: &Apache::lonnet::put('discussiontimes',\%storenewentry,
526: $ENV{'course.'.$ENV{'request.course.id'}.'.domain'},
527: $ENV{'course.'.$ENV{'request.course.id'}.'.num'});
528: }
529: my %record=&Apache::lonnet::restore('_discussion');
530: my ($temp)=keys %record;
531: unless ($temp=~/^error\:/) {
532: my %newrecord=();
533: $newrecord{'resource'}=$symb;
534: $newrecord{'subnumber'}=$record{'subnumber'}+1;
535: $status.='<br>Registering: '.
536: &Apache::lonnet::cstore(\%newrecord,'_discussion');
537: }
538: } else {
539: $status.='Failed.';
540: }
541: return $status.'<br>';
542: }
543:
544: # ----------------------------------------------------------- Preview function
545:
546: sub show_preview {
547: my $r=shift;
548: my $message=&clear_out_html($ENV{'form.comment'});
549: $message=~s/\n/\<br \/\>/g;
550: $message=&Apache::lontexconvert::msgtexconverted($message);
551: $r->print('<table border="2"><tr><td>'.
552: $message.'</td></tr></table>');
553: }
554:
555: sub generate_preview_button {
556: return(<<ENDPREVIEW);
557: <form name="preview" action="/adm/feedback?preview=1" method="post" target="preview">
558: <input type="hidden" name="comment" />
559: <input type="button" value="Show Preview"
560: onClick="this.form.comment.value=document.mailform.comment.value;this.form.submit();" />
561: </form>
562: ENDPREVIEW
563: }
564: sub handler {
565: my $r = shift;
566: if ($r->header_only) {
567: $r->content_type('text/html');
568: $r->send_http_header;
569: return OK;
570: }
571:
572: # --------------------------- Get query string for limited number of parameters
573:
574: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
575: ['hide','unhide','deldisc','postdata','preview']);
576:
577: if (($ENV{'form.hide'}) || ($ENV{'form.unhide'})) {
578: # ----------------------------------------------------------------- Hide/unhide
579: $r->content_type('text/html');
580: $r->send_http_header;
581:
582: my $entry=$ENV{'form.hide'}?$ENV{'form.hide'}:$ENV{'form.unhide'};
583:
584: my ($symb,$idx)=split(/\:\:\:/,$entry);
585: my ($map,$ind,$url)=&Apache::lonnet::decode_symb($symb);
586:
587: my %contrib=&Apache::lonnet::restore($symb,$ENV{'request.course.id'},
588: $ENV{'course.'.$ENV{'request.course.id'}.'.domain'},
589: $ENV{'course.'.$ENV{'request.course.id'}.'.num'});
590:
591:
592: my $currenthidden=$contrib{'hidden'};
593:
594: if ($ENV{'form.hide'}) {
595: $currenthidden.='.'.$idx.'.';
596: } else {
597: $currenthidden=~s/\.$idx\.//g;
598: }
599: my %newhash=('hidden' => $currenthidden);
600:
601: &Apache::lonnet::store(\%newhash,$symb,$ENV{'request.course.id'},
602: $ENV{'course.'.$ENV{'request.course.id'}.'.domain'},
603: $ENV{'course.'.$ENV{'request.course.id'}.'.num'});
604:
605: &redirect_back($r,&Apache::lonnet::clutter($url),
606: 'Changed discussion status<p>','0','0');
607: } elsif ($ENV{'form.deldisc'}) {
608: # --------------------------------------------------------------- Hide for good
609: $r->content_type('text/html');
610: $r->send_http_header;
611:
612: my $entry=$ENV{'form.deldisc'};
613:
614: my ($symb,$idx)=split(/\:\:\:/,$entry);
615: my ($map,$ind,$url)=&Apache::lonnet::decode_symb($symb);
616:
617: my %contrib=&Apache::lonnet::restore($symb,$ENV{'request.course.id'},
618: $ENV{'course.'.$ENV{'request.course.id'}.'.domain'},
619: $ENV{'course.'.$ENV{'request.course.id'}.'.num'});
620:
621:
622: my $currentdeleted=$contrib{'deleted'};
623:
624: $currentdeleted.='.'.$idx.'.';
625:
626: my %newhash=('deleted' => $currentdeleted);
627:
628: &Apache::lonnet::store(\%newhash,$symb,$ENV{'request.course.id'},
629: $ENV{'course.'.$ENV{'request.course.id'}.'.domain'},
630: $ENV{'course.'.$ENV{'request.course.id'}.'.num'});
631:
632: &redirect_back($r,&Apache::lonnet::clutter($url),
633: 'Changed discussion status<p>','0','0');
634: } elsif ($ENV{'form.preview'}) {
635: # -------------------------------------------------------- User wants a preview
636: &show_preview($r);
637: } else {
638: # ------------------------------------------------------------- Normal feedback
639: my $feedurl=$ENV{'form.postdata'};
640: $feedurl=~s/^http\:\/\///;
641: $feedurl=~s/^$ENV{'SERVER_NAME'}//;
642: $feedurl=~s/^$ENV{'HTTP_HOST'}//;
643:
644: my $symb=&Apache::lonnet::symbread($feedurl);
645: unless ($symb) {
646: $symb=$ENV{'form.symb'};
647: if ($symb) {
648: my ($map,$id,$url)=&Apache::lonnet::decode_symb($symb);
649: $feedurl=&Apache::lonnet::clutter($url);
650: }
651: }
652: my $goahead=1;
653: if ($feedurl=~/\.(problem|exam|quiz|assess|survey|form)$/) {
654: unless ($symb) { $goahead=0; }
655: }
656:
657: if ($goahead) {
658: # Go ahead with feedback, no ambiguous reference
659: $r->content_type('text/html');
660: $r->send_http_header;
661:
662: if (
663: (
664: ($feedurl=~m:^/res:) && ($feedurl!~m:^/res/adm:)
665: )
666: ||
667: ($ENV{'request.course.id'} && ($feedurl!~m:^/adm:))
668: ||
669: ($ENV{'request.course.id'} && ($symb=~/^bulletin\_\_\_/))
670: ) {
671: # --------------------------------------------------- Print login screen header
672: unless ($ENV{'form.sendit'}) {
673: my $options=&screen_header($feedurl);
674: if ($options) {
675: &mail_screen($r,$feedurl,$options);
676: } else {
677: &fail_redirect($r,$feedurl);
678: }
679: } else {
680:
681: # Get previous user input
682: my $prevattempts=&Apache::loncommon::get_previous_attempt(
683: $symb,$ENV{'user.name'},$ENV{'user.domain'},
684: $ENV{'request.course.id'});
685:
686: # Get output from resource
687: my $usersaw=&resource_output($feedurl);
688:
689: # Get resource answer (need to allow student to view grades for this to work)
690: &Apache::lonnet::appenv(('allowed.vgr'=>'F'));
691: my $useranswer=&Apache::loncommon::get_student_answers(
692: $symb,$ENV{'user.name'},$ENV{'user.domain'},
693: $ENV{'request.course.id'});
694: &Apache::lonnet::delenv('allowed.vgr');
695: # Get attachments, if any, and not too large
696: my $attachmenturl='';
697: if ($ENV{'form.attachment.filename'}) {
698: unless (length($ENV{'form.attachment'})>131072) {
699: $attachmenturl=&Apache::lonnet::userfileupload('attachment');
700: }
701: }
702: # Filter HTML out of message (could be nasty)
703: my $message=&clear_out_html($ENV{'form.comment'});
704:
705: # Assemble email
706: my ($email,$citations)=&assemble_email($feedurl,$message,$prevattempts,
707: $usersaw,$useranswer);
708:
709: # Who gets this?
710: my ($typestyle,%to) = &decide_receiver($feedurl);
711:
712: # Actually send mail
713: my ($status,$numsent)=&send_msg($feedurl,$email,$citations,
714: $attachmenturl,%to);
715:
716: # Discussion? Store that.
717:
718: my $numpost=0;
719: if ($ENV{'form.discuss'}) {
720: $typestyle.=&adddiscuss($symb,$message,0,$attachmenturl);
721: $numpost++;
722: }
723:
724: if ($ENV{'form.anondiscuss'}) {
725: $typestyle.=&adddiscuss($symb,$message,1,$attachmenturl);
726: $numpost++;
727: }
728:
729:
730: # Receipt screen and redirect back to where came from
731: &redirect_back($r,$feedurl,$typestyle,$numsent,$numpost,$status);
732:
733: }
734: } else {
735: # Unable to give feedback
736: &no_redirect_back($r,$feedurl);
737: }
738: } else {
739: # Ambiguous Problem Resource
740: if ( &Apache::lonnet::mod_perl_version() == 2 ) {
741: &Apache::lonnet::cleanenv();
742: }
743: $r->internal_redirect('/adm/ambiguous');
744: }
745: }
746: return OK;
747: }
748:
749: 1;
750: __END__
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