1: # The LearningOnline Network
2: # Feedback
3: #
4: # $Id: lonfeedback.pm,v 1.45 2003/06/06 02:24:49 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:
55: sub mail_screen {
56: my ($r,$feedurl,$options) = @_;
57: my $bodytag=&Apache::loncommon::bodytag('Resource Feedback and Discussion',
58: '','onLoad="window.focus();"');
59: $r->print(<<ENDDOCUMENT);
60: <html>
61: <head>
62: <title>The LearningOnline Network with CAPA</title>
63: <meta http-equiv="pragma" content="no-cache"></meta>
64: <script>
65: function gosubmit() {
66: var rec=0;
67: if (typeof(document.mailform.elements.author)!="undefined") {
68: if (document.mailform.elements.author.checked) {
69: rec=1;
70: }
71: }
72: if (typeof(document.mailform.elements.question)!="undefined") {
73: if (document.mailform.elements.question.checked) {
74: rec=1;
75: }
76: }
77: if (typeof(document.mailform.elements.course)!="undefined") {
78: if (document.mailform.elements.course.checked) {
79: rec=1;
80: }
81: }
82: if (typeof(document.mailform.elements.policy)!="undefined") {
83: if (document.mailform.elements.policy.checked) {
84: rec=1;
85: }
86: }
87: if (typeof(document.mailform.elements.discuss)!="undefined") {
88: if (document.mailform.elements.discuss.checked) {
89: rec=1;
90: }
91: }
92: if (typeof(document.mailform.elements.anondiscuss)!="undefined") {
93: if (document.mailform.elements.anondiscuss.checked) {
94: rec=1;
95: }
96: }
97:
98: if (rec) {
99: document.mailform.submit();
100: } else {
101: alert('Please check a feedback type.');
102: }
103: }
104: </script>
105: </head>
106: $bodytag
107: <h2><tt>$feedurl</tt></h2>
108: <form action="/adm/feedback" method="post" name="mailform"
109: enctype="multipart/form-data">
110: <input type=hidden name=postdata value="$feedurl">
111: Please check at least one of the following feedback types:
112: $options<hr>
113: My question/comment/feedback:<p>
114: <textarea name=comment cols=60 rows=10 wrap=hard>
115: </textarea><p>
116: Attachment (128 KB max size): <input type="file" name="attachment" />
117: </p>
118: <p>
119: <input type="hidden" name="sendit" value="1" />
120: <input type=button value="Send Feedback" onClick='gosubmit();' />
121: </p>
122: </form>
123: ENDDOCUMENT
124: $r->print(&generate_preview_button().'</body></html>');
125: }
126:
127: sub fail_redirect {
128: my ($r,$feedurl) = @_;
129: $r->print (<<ENDFAILREDIR);
130: <head><title>Feedback not sent</title>
131: <meta http-equiv="pragma" content="no-cache"></meta>
132: <meta HTTP-EQUIV="Refresh" CONTENT="2; url=$feedurl">
133: </head>
134: <html>
135: <body bgcolor="#FFFFFF">
136: <img align=right src=/adm/lonIcons/lonlogos.gif>
137: <b>Sorry, no recipients ...</b>
138: </body>
139: </html>
140: ENDFAILREDIR
141: }
142:
143: sub redirect_back {
144: my ($r,$feedurl,$typestyle,$sendsomething,$sendposts,$status) = @_;
145: $r->print (<<ENDREDIR);
146: <head>
147: <title>Feedback sent</title>
148: <meta http-equiv="pragma" content="no-cache"></meta>
149: <meta HTTP-EQUIV="Refresh" CONTENT="2; url=$feedurl">
150: </head>
151: <html>
152: <body bgcolor="#FFFFFF">
153: <img align=right src=/adm/lonIcons/lonlogos.gif>
154: $typestyle
155: <b>Sent $sendsomething message(s), and $sendposts post(s).</b>
156: <font color=red>$status</font>
157: </body>
158: </html>
159: ENDREDIR
160: }
161:
162: sub no_redirect_back {
163: my ($r,$feedurl) = @_;
164: $r->print (<<ENDNOREDIR);
165: <head><title>Feedback not sent</title>
166: <meta http-equiv="pragma" content="no-cache"></meta>
167: ENDNOREDIR
168:
169: if ($feedurl!~/^\/adm\/feedback/) {
170: $r->print('<meta HTTP-EQUIV="Refresh" CONTENT="2; url='.$feedurl.'">');
171: }
172:
173: $r->print (<<ENDNOREDIRTWO);
174: </head>
175: <html>
176: <body bgcolor="#FFFFFF">
177: <img align=right src=/adm/lonIcons/lonlogos.gif>
178: <b>Sorry, no feedback possible on this resource ...</b>
179: </body>
180: </html>
181: ENDNOREDIRTWO
182: }
183:
184: sub screen_header {
185: my ($feedurl) = @_;
186: my $options='';
187: if (($feedurl=~/^\/res\//) && ($feedurl!~/^\/res\/adm/)) {
188: $options=
189: '<p><input type=checkbox name=author> Feedback to resource author';
190: }
191: if (&feedback_available(1)) {
192: $options.=
193: '<br><input type=checkbox name=question> Question about resource content';
194: }
195: if (&feedback_available(0,1)) {
196: $options.=
197: '<br><input type=checkbox name=course> '.
198: 'Question/Comment/Feedback about course content';
199: }
200: if (&feedback_available(0,0,1)) {
201: $options.=
202: '<br><input type=checkbox name=policy> '.
203: 'Question/Comment/Feedback about course policy';
204: }
205:
206: if ($ENV{'request.course.id'}) {
207: if (&Apache::lonnet::allowed('pch',
208: $ENV{'request.course.id'}.
209: ($ENV{'request.course.sec'}?'/'.$ENV{'request.course.sec'}:''))) {
210: $options.='<br><input type=checkbox name=discuss> '.
211: '<b>Contribution to course discussion of resource</b>';
212: $options.='<br><input type=checkbox name=anondiscuss> '.
213: '<b>Anonymous contribution to course discussion of resource</b>'.
214: ' (name only visible to course faculty)';
215: }
216: }
217: return $options;
218: }
219:
220: sub resource_output {
221: my ($feedurl) = @_;
222: my $usersaw=&Apache::lonnet::ssi($feedurl);
223: $usersaw=~s/\<body[^\>]*\>//gi;
224: $usersaw=~s/\<\/body\>//gi;
225: $usersaw=~s/\<html\>//gi;
226: $usersaw=~s/\<\/html\>//gi;
227: $usersaw=~s/\<head\>//gi;
228: $usersaw=~s/\<\/head\>//gi;
229: $usersaw=~s/action\s*\=/would_be_action\=/gi;
230: return $usersaw;
231: }
232:
233: sub clear_out_html {
234: my ($message,$override)=@_;
235: my $cid=$ENV{'request.course.id'};
236: if (($ENV{"course.$cid.allow_limited_html_in_feedback"} =~ m/yes/i) ||
237: ($override)) {
238: # allows <B> <I> <P> <A> <LI> <OL> <UL> <EM> <BR> <TT> <STRONG>
239: # <BLOCKQUOTE> <DIV .*> <DIV> <IMG>
240: my %html=(B=>1, I=>1, P=>1, A=>1, LI=>1, OL=>1, UL=>1, EM=>1,
241: BR=>1, TT=>1, STRONG=>1, BLOCKQUOTE=>1, DIV=>1, IMG=>1);
242:
243: $message =~ s/\<(\/?\s*(\w+)[^\>\<]*)/
244: {($html{uc($2)}&(length($1)<1000))?"\<$1":"\<$1"}/ge;
245: $message =~ s/(\<?\s*(\w+)[^\<\>]*)\>/
246: {($html{uc($2)}&(length($1)<1000))?"$1\>":"$1\>"}/ge;
247: } else {
248: $message=~s/\<\/*m\s*\>//g;
249: $message=~s/\</\<\;/g;
250: $message=~s/\>/\>\;/g;
251: }
252: return $message;
253: }
254:
255: sub assemble_email {
256: my ($feedurl,$message,$prevattempts,$usersaw,$useranswer)=@_;
257: my $email=<<"ENDEMAIL";
258: Refers to <a href="$feedurl">$feedurl</a>
259:
260: $message
261: ENDEMAIL
262: my $citations=<<"ENDCITE";
263: <h2>Previous attempts of student (if applicable)</h2>
264: $prevattempts
265: <p><hr>
266: <h2>Original screen output (if applicable)</h2>
267: $usersaw
268: <h2>Correct Answer(s) (if applicable)</h2>
269: $useranswer
270: ENDCITE
271: return ($email,$citations);
272: }
273:
274: sub secapply {
275: my $rec=shift;
276: my $defaultflag=shift;
277: $rec=~s/\s+//g;
278: $rec=~s/\@/\:/g;
279: my ($adr,$sections)=($rec=~/^([^\(]+)\(([^\)]+)\)/);
280: if ($sections) {
281: foreach (split(/\;/,$sections)) {
282: if (($_ eq $ENV{'request.course.sec'}) ||
283: ($defaultflag && ($_ eq '*'))) {
284: return $adr;
285: }
286: }
287: } else {
288: return $rec;
289: }
290: return '';
291: }
292:
293: sub decide_receiver {
294: my ($feedurl,$author,$question,$course,$policy,$defaultflag) = @_;
295: my $typestyle='';
296: my %to=();
297: if ($ENV{'form.author'}||$author) {
298: $typestyle.='Submitting as Author Feedback<br>';
299: $feedurl=~/^\/res\/(\w+)\/(\w+)\//;
300: $to{$2.':'.$1}=1;
301: }
302: if ($ENV{'form.question'}||$question) {
303: $typestyle.='Submitting as Question<br>';
304: foreach (split(/\,/,
305: $ENV{'course.'.$ENV{'request.course.id'}.'.question.email'})
306: ) {
307: my $rec=&secapply($_,$defaultflag);
308: if ($rec) { $to{$rec}=1; }
309: }
310: }
311: if ($ENV{'form.course'}||$course) {
312: $typestyle.='Submitting as Comment<br>';
313: foreach (split(/\,/,
314: $ENV{'course.'.$ENV{'request.course.id'}.'.comment.email'})
315: ) {
316: my $rec=&secapply($_,$defaultflag);
317: if ($rec) { $to{$rec}=1; }
318: }
319: }
320: if ($ENV{'form.policy'}||$policy) {
321: $typestyle.='Submitting as Policy Feedback<br>';
322: foreach (split(/\,/,
323: $ENV{'course.'.$ENV{'request.course.id'}.'.policy.email'})
324: ) {
325: my $rec=&secapply($_,$defaultflag);
326: if ($rec) { $to{$rec}=1; }
327: }
328: }
329: if ((scalar(%to) eq '0') && (!$defaultflag)) {
330: ($typestyle,%to)=
331: &decide_receiver($feedurl,$author,$question,$course,$policy,1);
332: }
333: return ($typestyle,%to);
334: }
335:
336: sub feedback_available {
337: my ($question,$course,$policy)=@_;
338: my ($typestyle,%to)=&decide_receiver('',0,$question,$course,$policy);
339: return scalar(%to);
340: }
341:
342: sub send_msg {
343: my ($feedurl,$email,$citations,$attachmenturl,%to)=@_;
344: my $status='';
345: my $sendsomething=0;
346: foreach (keys %to) {
347: if ($_) {
348: my $declutter=&Apache::lonnet::declutter($feedurl);
349: unless (&Apache::lonmsg::user_normal_msg(split(/\:/,$_),
350: 'Feedback ['.$declutter.']',$email,$citations,$feedurl,
351: $attachmenturl)=~/ok/) {
352: $status.='<br>Error sending message to '.$_.'<br>';
353: } else {
354: $sendsomething++;
355: }
356: }
357: }
358:
359: my %record=&Apache::lonnet::restore('_feedback');
360: my ($temp)=keys %record;
361: unless ($temp=~/^error\:/) {
362: my %newrecord=();
363: $newrecord{'resource'}=$feedurl;
364: $newrecord{'subnumber'}=$record{'subnumber'}+1;
365: unless (&Apache::lonnet::cstore(\%newrecord,'_feedback') eq 'ok') {
366: $status.='<br>Not registered<br>';
367: }
368: }
369:
370: return ($status,$sendsomething);
371: }
372:
373: sub adddiscuss {
374: my ($symb,$email,$anon,$attachmenturl)=@_;
375: my $status='';
376: if (&Apache::lonnet::allowed('pch',$ENV{'request.course.id'}.
377: ($ENV{'request.course.sec'}?'/'.$ENV{'request.course.sec'}:''))) {
378:
379: my %contrib=('message' => $email,
380: 'sendername' => $ENV{'user.name'},
381: 'senderdomain' => $ENV{'user.domain'},
382: 'screenname' => $ENV{'environment.screenname'},
383: 'plainname' => $ENV{'environment.firstname'}.' '.
384: $ENV{'environment.middlename'}.' '.
385: $ENV{'environment.lastname'}.' '.
386: $ENV{'enrironment.generation'},
387: 'attachmenturl'=> $attachmenturl);
388: if ($anon) {
389: $contrib{'anonymous'}='true';
390: }
391: if (($symb) && ($email)) {
392: $status='Adding to class discussion'.($anon?' (anonymous)':'').': '.
393: &Apache::lonnet::store(\%contrib,$symb,$ENV{'request.course.id'},
394: $ENV{'course.'.$ENV{'request.course.id'}.'.domain'},
395: $ENV{'course.'.$ENV{'request.course.id'}.'.num'});
396: my %storenewentry=($symb => time);
397: $status.='<br>Updating discussion time: '.
398: &Apache::lonnet::put('discussiontimes',\%storenewentry,
399: $ENV{'course.'.$ENV{'request.course.id'}.'.domain'},
400: $ENV{'course.'.$ENV{'request.course.id'}.'.num'});
401: }
402: my %record=&Apache::lonnet::restore('_discussion');
403: my ($temp)=keys %record;
404: unless ($temp=~/^error\:/) {
405: my %newrecord=();
406: $newrecord{'resource'}=$symb;
407: $newrecord{'subnumber'}=$record{'subnumber'}+1;
408: $status.='<br>Registering: '.
409: &Apache::lonnet::cstore(\%newrecord,'_discussion');
410: }
411: } else {
412: $status.='Failed.';
413: }
414: return $status.'<br>';
415: }
416:
417: # ----------------------------------------------------------- Preview function
418:
419: sub show_preview {
420: my $r=shift;
421: my $message=&clear_out_html($ENV{'form.comment'});
422: $message=~s/\n/\<br \/\>/g;
423: $message=&Apache::lontexconvert::msgtexconverted($message);
424: $r->print('<table border="2"><tr><td>'.
425: $message.'</td></tr></table>');
426: }
427:
428: sub generate_preview_button {
429: return(<<ENDPREVIEW);
430: <form name="preview" action="/adm/feedback?preview=1" method="post" target="preview">
431: <input type="hidden" name="comment" />
432: <input type="button" value="Show Preview"
433: onClick="this.form.comment.value=document.mailform.comment.value;this.form.submit();" />
434: </form>
435: ENDPREVIEW
436: }
437: sub handler {
438: my $r = shift;
439: if ($r->header_only) {
440: $r->content_type('text/html');
441: $r->send_http_header;
442: return OK;
443: }
444:
445: # --------------------------- Get query string for limited number of parameters
446:
447: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
448: ['hide','unhide','deldisc','postdata','preview']);
449:
450: if (($ENV{'form.hide'}) || ($ENV{'form.unhide'})) {
451: # ----------------------------------------------------------------- Hide/unhide
452: $r->content_type('text/html');
453: $r->send_http_header;
454:
455: my $entry=$ENV{'form.hide'}?$ENV{'form.hide'}:$ENV{'form.unhide'};
456:
457: my ($symb,$idx)=split(/\:\:\:/,$entry);
458: my ($map,$ind,$url)=split(/\_\_\_/,$symb);
459:
460: my %contrib=&Apache::lonnet::restore($symb,$ENV{'request.course.id'},
461: $ENV{'course.'.$ENV{'request.course.id'}.'.domain'},
462: $ENV{'course.'.$ENV{'request.course.id'}.'.num'});
463:
464:
465: my $currenthidden=$contrib{'hidden'};
466:
467: if ($ENV{'form.hide'}) {
468: $currenthidden.='.'.$idx.'.';
469: } else {
470: $currenthidden=~s/\.$idx\.//g;
471: }
472: my %newhash=('hidden' => $currenthidden);
473:
474: &Apache::lonnet::store(\%newhash,$symb,$ENV{'request.course.id'},
475: $ENV{'course.'.$ENV{'request.course.id'}.'.domain'},
476: $ENV{'course.'.$ENV{'request.course.id'}.'.num'});
477:
478: &redirect_back($r,&Apache::lonnet::clutter($url),
479: 'Changed discussion status<p>','0','0');
480: } elsif ($ENV{'form.deldisc'}) {
481: # --------------------------------------------------------------- Hide for good
482: $r->content_type('text/html');
483: $r->send_http_header;
484:
485: my $entry=$ENV{'form.deldisc'};
486:
487: my ($symb,$idx)=split(/\:\:\:/,$entry);
488: my ($map,$ind,$url)=split(/\_\_\_/,$symb);
489:
490: my %contrib=&Apache::lonnet::restore($symb,$ENV{'request.course.id'},
491: $ENV{'course.'.$ENV{'request.course.id'}.'.domain'},
492: $ENV{'course.'.$ENV{'request.course.id'}.'.num'});
493:
494:
495: my $currentdeleted=$contrib{'deleted'};
496:
497: $currentdeleted.='.'.$idx.'.';
498:
499: my %newhash=('deleted' => $currentdeleted);
500:
501: &Apache::lonnet::store(\%newhash,$symb,$ENV{'request.course.id'},
502: $ENV{'course.'.$ENV{'request.course.id'}.'.domain'},
503: $ENV{'course.'.$ENV{'request.course.id'}.'.num'});
504:
505: &redirect_back($r,&Apache::lonnet::clutter($url),
506: 'Changed discussion status<p>','0','0');
507: } elsif ($ENV{'form.preview'}) {
508: # -------------------------------------------------------- User wants a preview
509: &show_preview($r);
510: } else {
511: # ------------------------------------------------------------- Normal feedback
512: my $feedurl=$ENV{'form.postdata'};
513: $feedurl=~s/^http\:\/\///;
514: $feedurl=~s/^$ENV{'SERVER_NAME'}//;
515: $feedurl=~s/^$ENV{'HTTP_HOST'}//;
516:
517: my $symb=&Apache::lonnet::symbread($feedurl);
518: unless ($symb) {
519: $symb=$ENV{'form.symb'};
520: if ($symb) {
521: my ($map,$id,$url)=split(/\_\_\_/,$symb);
522: $feedurl=&Apache::lonnet::clutter($url);
523: }
524: }
525: my $goahead=1;
526: if ($feedurl=~/\.(problem|exam|quiz|assess|survey|form)$/) {
527: unless ($symb) { $goahead=0; }
528: }
529:
530: if ($goahead) {
531: # Go ahead with feedback, no ambiguous reference
532: $r->content_type('text/html');
533: $r->send_http_header;
534:
535: if (
536: (
537: ($feedurl=~m:^/res:) && ($feedurl!~m:^/res/adm:)
538: )
539: ||
540: ($ENV{'request.course.id'} && ($feedurl!~m:^/adm:))
541: ||
542: ($ENV{'request.course.id'} && ($symb=~/^bulletin\_\_\_/))
543: ) {
544: # --------------------------------------------------- Print login screen header
545: unless ($ENV{'form.sendit'}) {
546: my $options=&screen_header($feedurl);
547: if ($options) {
548: &mail_screen($r,$feedurl,$options);
549: } else {
550: &fail_redirect($r,$feedurl);
551: }
552: } else {
553:
554: # Get previous user input
555: my $prevattempts=&Apache::loncommon::get_previous_attempt(
556: $symb,$ENV{'user.name'},$ENV{'user.domain'},
557: $ENV{'request.course.id'});
558:
559: # Get output from resource
560: my $usersaw=&resource_output($feedurl);
561:
562: # Get resource answer
563: my $useranswer=&Apache::loncommon::get_student_answers(
564: $symb,$ENV{'user.name'},$ENV{'user.domain'},
565: $ENV{'request.course.id'});
566: # Get attachments, if any, and not too large
567: my $attachmenturl='';
568: if ($ENV{'form.attachment.filename'}) {
569: unless (length($ENV{'form.attachment'})>131072) {
570: $attachmenturl=&Apache::lonnet::userfileupload('attachment');
571: }
572: }
573: # Filter HTML out of message (could be nasty)
574: my $message=&clear_out_html($ENV{'form.comment'});
575:
576: # Assemble email
577: my ($email,$citations)=&assemble_email($feedurl,$message,$prevattempts,
578: $usersaw,$useranswer);
579:
580: # Who gets this?
581: my ($typestyle,%to) = &decide_receiver($feedurl);
582:
583: # Actually send mail
584: my ($status,$numsent)=&send_msg($feedurl,$email,$citations,
585: $attachmenturl,%to);
586:
587: # Discussion? Store that.
588:
589: my $numpost=0;
590: if ($ENV{'form.discuss'}) {
591: $typestyle.=&adddiscuss($symb,$message,0,$attachmenturl);
592: $numpost++;
593: }
594:
595: if ($ENV{'form.anondiscuss'}) {
596: $typestyle.=&adddiscuss($symb,$message,1,$attachmenturl);
597: $numpost++;
598: }
599:
600:
601: # Receipt screen and redirect back to where came from
602: &redirect_back($r,$feedurl,$typestyle,$numsent,$numpost,$status);
603:
604: }
605: } else {
606: # Unable to give feedback
607: &no_redirect_back($r,$feedurl);
608: }
609: } else {
610: # Ambiguous Problem Resource
611: $r->internal_redirect('/adm/ambiguous');
612: }
613: }
614: return OK;
615: }
616:
617: 1;
618: __END__
FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>
![[BACK]](/icons/back.gif){kind=icon}
Return to lonfeedback.pm CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [LON-CAPA] / loncom / interface