1: # The LearningOnline Network
2: # Feedback
3: #
4: # $Id: lonfeedback.pm,v 1.36 2002/10/28 14:00:18 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: <input type=hidden name=postdata value="$feedurl">
110: Please check at least one of the following feedback types:
111: $options<hr>
112: My question/comment/feedback:<p>
113: <textarea name=comment cols=60 rows=10 wrap=hard>
114: </textarea><p>
115: <input type=hidden name=sendit value=1>
116: <input type=button value="Send Feedback" onClick='gosubmit();'></input>
117: </form>
118: ENDDOCUMENT
119: $r->print(&generate_preview_button().'</body></html>');
120: }
121:
122: sub fail_redirect {
123: my ($r,$feedurl) = @_;
124: $r->print (<<ENDFAILREDIR);
125: <head><title>Feedback not sent</title>
126: <meta http-equiv="pragma" content="no-cache"></meta>
127: <meta HTTP-EQUIV="Refresh" CONTENT="2; url=$feedurl">
128: </head>
129: <html>
130: <body bgcolor="#FFFFFF">
131: <img align=right src=/adm/lonIcons/lonlogos.gif>
132: <b>Sorry, no recipients ...</b>
133: </body>
134: </html>
135: ENDFAILREDIR
136: }
137:
138: sub redirect_back {
139: my ($r,$feedurl,$typestyle,$sendsomething,$sendposts,$status) = @_;
140: $r->print (<<ENDREDIR);
141: <head>
142: <title>Feedback sent</title>
143: <meta http-equiv="pragma" content="no-cache"></meta>
144: <meta HTTP-EQUIV="Refresh" CONTENT="2; url=$feedurl">
145: </head>
146: <html>
147: <body bgcolor="#FFFFFF">
148: <img align=right src=/adm/lonIcons/lonlogos.gif>
149: $typestyle
150: <b>Sent $sendsomething message(s), and $sendposts post(s).</b>
151: <font color=red>$status</font>
152: </body>
153: </html>
154: ENDREDIR
155: }
156:
157: sub no_redirect_back {
158: my ($r,$feedurl) = @_;
159: $r->print (<<ENDNOREDIR);
160: <head><title>Feedback not sent</title>
161: <meta http-equiv="pragma" content="no-cache"></meta>
162: ENDNOREDIR
163:
164: if ($feedurl!~/^\/adm\/feedback/) {
165: $r->print('<meta HTTP-EQUIV="Refresh" CONTENT="2; url='.$feedurl.'">');
166: }
167:
168: $r->print (<<ENDNOREDIRTWO);
169: </head>
170: <html>
171: <body bgcolor="#FFFFFF">
172: <img align=right src=/adm/lonIcons/lonlogos.gif>
173: <b>Sorry, no feedback possible on this resource ...</b>
174: </body>
175: </html>
176: ENDNOREDIRTWO
177: }
178:
179: sub screen_header {
180: my ($feedurl) = @_;
181: my $options='';
182: if (($feedurl=~/^\/res\//) && ($feedurl!~/^\/res\/adm/)) {
183: $options=
184: '<p><input type=checkbox name=author> Feedback to resource author';
185: }
186: if (&feedback_available(1)) {
187: $options.=
188: '<br><input type=checkbox name=question> Question about resource content';
189: }
190: if (&feedback_available(0,1)) {
191: $options.=
192: '<br><input type=checkbox name=course> '.
193: 'Question/Comment/Feedback about course content';
194: }
195: if (&feedback_available(0,0,1)) {
196: $options.=
197: '<br><input type=checkbox name=policy> '.
198: 'Question/Comment/Feedback about course policy';
199: }
200:
201: if ($ENV{'request.course.id'}) {
202: if (&Apache::lonnet::allowed('pch',
203: $ENV{'request.course.id'}.
204: ($ENV{'request.course.sec'}?'/'.$ENV{'request.course.sec'}:''))) {
205: $options.='<br><input type=checkbox name=discuss> '.
206: '<b>Contribution to course discussion of resource</b>';
207: $options.='<br><input type=checkbox name=anondiscuss> '.
208: '<b>Anonymous contribution to course discussion of resource</b>'.
209: ' (name only visible to course faculty)';
210: }
211: }
212: return $options;
213: }
214:
215: sub resource_output {
216: my ($feedurl) = @_;
217: my $usersaw=&Apache::lonnet::ssi($feedurl);
218: $usersaw=~s/\<body[^\>]*\>//gi;
219: $usersaw=~s/\<\/body\>//gi;
220: $usersaw=~s/\<html\>//gi;
221: $usersaw=~s/\<\/html\>//gi;
222: $usersaw=~s/\<head\>//gi;
223: $usersaw=~s/\<\/head\>//gi;
224: $usersaw=~s/action\s*\=/would_be_action\=/gi;
225: return $usersaw;
226: }
227:
228: sub clear_out_html {
229: my $message=$ENV{'form.comment'};
230: $message=~s/\<\/*m\s*\>//g;
231: $message=~s/\</\<\;/g;
232: $message=~s/\>/\>\;/g;
233: return $message;
234: }
235:
236: sub assemble_email {
237: my ($feedurl,$message,$prevattempts,$usersaw)=@_;
238: my $email=<<"ENDEMAIL";
239: Refers to <a href="$feedurl">$feedurl</a>
240:
241: $message
242: ENDEMAIL
243: my $citations=<<"ENDCITE";
244: <h2>Previous attempts of student (if applicable)</h2>
245: $prevattempts
246: <p><hr>
247: <h2>Original screen output (if applicable)</h2>
248: $usersaw
249: ENDCITE
250: return ($email,$citations);
251: }
252:
253: sub secapply {
254: my $rec=shift;
255: my $defaultflag=shift;
256: $rec=~s/\s+//g;
257: $rec=~s/\@/\:/g;
258: my ($adr,$sections)=($rec=~/^([^\(]+)\(([^\)]+)\)/);
259: if ($sections) {
260: foreach (split(/\;/,$sections)) {
261: if (($_ eq $ENV{'request.course.sec'}) ||
262: ($defaultflag && ($_ eq '*'))) {
263: return $adr;
264: }
265: }
266: } else {
267: return $rec;
268: }
269: return '';
270: }
271:
272: sub decide_receiver {
273: my ($feedurl,$author,$question,$course,$policy,$defaultflag) = @_;
274: my $typestyle='';
275: my %to=();
276: if ($ENV{'form.author'}||$author) {
277: $typestyle.='Submitting as Author Feedback<br>';
278: $feedurl=~/^\/res\/(\w+)\/(\w+)\//;
279: $to{$2.':'.$1}=1;
280: }
281: if ($ENV{'form.question'}||$question) {
282: $typestyle.='Submitting as Question<br>';
283: foreach (split(/\,/,
284: $ENV{'course.'.$ENV{'request.course.id'}.'.question.email'})
285: ) {
286: my $rec=&secapply($_,$defaultflag);
287: if ($rec) { $to{$rec}=1; }
288: }
289: }
290: if ($ENV{'form.course'}||$course) {
291: $typestyle.='Submitting as Comment<br>';
292: foreach (split(/\,/,
293: $ENV{'course.'.$ENV{'request.course.id'}.'.comment.email'})
294: ) {
295: my $rec=&secapply($_,$defaultflag);
296: if ($rec) { $to{$rec}=1; }
297: }
298: }
299: if ($ENV{'form.policy'}||$policy) {
300: $typestyle.='Submitting as Policy Feedback<br>';
301: foreach (split(/\,/,
302: $ENV{'course.'.$ENV{'request.course.id'}.'.policy.email'})
303: ) {
304: my $rec=&secapply($_,$defaultflag);
305: if ($rec) { $to{$rec}=1; }
306: }
307: }
308: if ((scalar(%to) eq '0') && (!$defaultflag)) {
309: ($typestyle,%to)=
310: &decide_receiver($feedurl,$author,$question,$course,$policy,1);
311: }
312: return ($typestyle,%to);
313: }
314:
315: sub feedback_available {
316: my ($question,$course,$policy)=@_;
317: my ($typestyle,%to)=&decide_receiver('',0,$question,$course,$policy);
318: return scalar(%to);
319: }
320:
321: sub send_msg {
322: my ($feedurl,$email,$citations,%to)=@_;
323: my $status='';
324: my $sendsomething=0;
325: foreach (keys %to) {
326: if ($_) {
327: my $declutter=&Apache::lonnet::declutter($feedurl);
328: unless (&Apache::lonmsg::user_normal_msg(split(/\:/,$_),
329: 'Feedback ['.$declutter.']',$email,$citations)=~/ok/) {
330: $status.='<br>Error sending message to '.$_.'<br>';
331: } else {
332: $sendsomething++;
333: }
334: }
335: }
336:
337: my %record=&Apache::lonnet::restore('_feedback');
338: my ($temp)=keys %record;
339: unless ($temp=~/^error\:/) {
340: my %newrecord=();
341: $newrecord{'resource'}=$feedurl;
342: $newrecord{'subnumber'}=$record{'subnumber'}+1;
343: unless (&Apache::lonnet::cstore(\%newrecord,'_feedback') eq 'ok') {
344: $status.='<br>Not registered<br>';
345: }
346: }
347:
348: return ($status,$sendsomething);
349: }
350:
351: sub adddiscuss {
352: my ($symb,$email,$anon)=@_;
353: my $status='';
354: if (&Apache::lonnet::allowed('pch',$ENV{'request.course.id'}.
355: ($ENV{'request.course.sec'}?'/'.$ENV{'request.course.sec'}:''))) {
356:
357: my %contrib=('message' => $email,
358: 'sendername' => $ENV{'user.name'},
359: 'senderdomain' => $ENV{'user.domain'},
360: 'screenname' => $ENV{'environment.screenname'},
361: 'plainname' => $ENV{'environment.firstname'}.' '.
362: $ENV{'environment.middlename'}.' '.
363: $ENV{'environment.lastname'}.' '.
364: $ENV{'enrironment.generation'});
365: if ($anon) {
366: $contrib{'anonymous'}='true';
367: }
368: if (($symb) && ($email)) {
369: $status='Adding to class discussion'.($anon?' (anonymous)':'').': '.
370: &Apache::lonnet::store(\%contrib,$symb,$ENV{'request.course.id'},
371: $ENV{'course.'.$ENV{'request.course.id'}.'.domain'},
372: $ENV{'course.'.$ENV{'request.course.id'}.'.num'});
373: my %storenewentry=($symb => time);
374: $status.='<br>Updating discussion time: '.
375: &Apache::lonnet::put('discussiontimes',\%storenewentry,
376: $ENV{'course.'.$ENV{'request.course.id'}.'.domain'},
377: $ENV{'course.'.$ENV{'request.course.id'}.'.num'});
378: }
379: my %record=&Apache::lonnet::restore('_discussion');
380: my ($temp)=keys %record;
381: unless ($temp=~/^error\:/) {
382: my %newrecord=();
383: $newrecord{'resource'}=$symb;
384: $newrecord{'subnumber'}=$record{'subnumber'}+1;
385: $status.='<br>Registering: '.
386: &Apache::lonnet::cstore(\%newrecord,'_discussion');
387: }
388: } else {
389: $status.='Failed.';
390: }
391: return $status.'<br>';
392: }
393:
394: # ----------------------------------------------------------- Preview function
395:
396: sub show_preview {
397: my $r=shift;
398: my $message=&clear_out_html($ENV{'form.comment'});
399: $message=~s/\n/\<br \/\>/g;
400: $message=&Apache::lontexconvert::msgtexconverted($message);
401: $r->print('<table border="2"><tr><td>'.
402: $message.'</td></tr></table>');
403: }
404:
405: sub generate_preview_button {
406: return(<<ENDPREVIEW);
407: <form name="preview" action="/adm/feedback?preview=1" method="post" target="preview">
408: <input type="hidden" name="comment" />
409: <input type="button" value="Show Preview"
410: onClick="this.form.comment.value=document.mailform.comment.value;this.form.submit();" />
411: </form>
412: ENDPREVIEW
413: }
414: sub handler {
415: my $r = shift;
416: if ($r->header_only) {
417: $r->content_type('text/html');
418: $r->send_http_header;
419: return OK;
420: }
421:
422: # --------------------------- Get query string for limited number of parameters
423:
424: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
425: ['hide','unhide','postdata','preview']);
426:
427: if (($ENV{'form.hide'}) || ($ENV{'form.unhide'})) {
428: # ----------------------------------------------------------------- Hide/unhide
429: $r->content_type('text/html');
430: $r->send_http_header;
431:
432: my $entry=$ENV{'form.hide'}?$ENV{'form.hide'}:$ENV{'form.unhide'};
433:
434: my ($symb,$idx)=split(/\:\:\:/,$entry);
435: my ($map,$ind,$url)=split(/\_\_\_/,$symb);
436:
437: my %contrib=&Apache::lonnet::restore($symb,$ENV{'request.course.id'},
438: $ENV{'course.'.$ENV{'request.course.id'}.'.domain'},
439: $ENV{'course.'.$ENV{'request.course.id'}.'.num'});
440:
441:
442: my $currenthidden=$contrib{'hidden'};
443:
444: if ($ENV{'form.hide'}) {
445: $currenthidden.='.'.$idx.'.';
446: } else {
447: $currenthidden=~s/\.$idx\.//g;
448: }
449: my %newhash=('hidden' => $currenthidden);
450:
451: &Apache::lonnet::store(\%newhash,$symb,$ENV{'request.course.id'},
452: $ENV{'course.'.$ENV{'request.course.id'}.'.domain'},
453: $ENV{'course.'.$ENV{'request.course.id'}.'.num'});
454:
455: &redirect_back($r,&Apache::lonnet::clutter($url),
456: 'Changed discussion status<p>','0','0');
457: } elsif ($ENV{'form.preview'}) {
458: # -------------------------------------------------------- User wants a preview
459: &show_preview($r);
460: } else {
461: # ------------------------------------------------------------- Normal feedback
462: my $feedurl=$ENV{'form.postdata'};
463: $feedurl=~s/^http\:\/\///;
464: $feedurl=~s/^$ENV{'SERVER_NAME'}//;
465: $feedurl=~s/^$ENV{'HTTP_HOST'}//;
466:
467: my $symb=&Apache::lonnet::symbread($feedurl);
468: unless ($symb) {
469: $symb=$ENV{'form.symb'};
470: if ($symb) {
471: my ($map,$id,$url)=split(/\_\_\_/,$symb);
472: $feedurl=&Apache::lonnet::clutter($url);
473: }
474: }
475: my $goahead=1;
476: if ($feedurl=~/\.(problem|exam|quiz|assess|survey|form)$/) {
477: unless ($symb) { $goahead=0; }
478: }
479:
480: if ($goahead) {
481: # Go ahead with feedback, no ambiguous reference
482: $r->content_type('text/html');
483: $r->send_http_header;
484:
485: if (
486: (
487: ($feedurl=~m:^/res:) && ($feedurl!~m:^/res/adm:)
488: )
489: ||
490: ($ENV{'request.course.id'} && ($feedurl!~m:^/adm:))
491: ||
492: ($ENV{'request.course.id'} && ($symb=~/^bulletin\_\_\_/))
493: ) {
494: # --------------------------------------------------- Print login screen header
495: unless ($ENV{'form.sendit'}) {
496: my $options=&screen_header($feedurl);
497: if ($options) {
498: &mail_screen($r,$feedurl,$options);
499: } else {
500: &fail_redirect($r,$feedurl);
501: }
502: } else {
503:
504: # Get previous user input
505: my $prevattempts=&Apache::loncommon::get_previous_attempt(
506: $symb,$ENV{'user.name'},$ENV{'user.domain'},
507: $ENV{'request.course.id'});
508:
509: # Get output from resource
510: my $usersaw=&resource_output($feedurl);
511:
512: # Filter HTML out of message (could be nasty)
513: my $message=&clear_out_html;
514:
515: # Assemble email
516: my ($email,$citations)=&assemble_email($feedurl,$message,$prevattempts,
517: $usersaw);
518:
519: # Who gets this?
520: my ($typestyle,%to) = &decide_receiver($feedurl);
521:
522: # Actually send mail
523: my ($status,$numsent)=&send_msg($feedurl,$email,$citations,%to);
524:
525: # Discussion? Store that.
526:
527: my $numpost=0;
528: if ($ENV{'form.discuss'}) {
529: $typestyle.=&adddiscuss($symb,$message);
530: $numpost++;
531: }
532:
533: if ($ENV{'form.anondiscuss'}) {
534: $typestyle.=&adddiscuss($symb,$message,1);
535: $numpost++;
536: }
537:
538:
539: # Receipt screen and redirect back to where came from
540: &redirect_back($r,$feedurl,$typestyle,$numsent,$numpost,$status);
541:
542: }
543: } else {
544: # Unable to give feedback
545: &no_redirect_back($r,$feedurl);
546: }
547: } else {
548: # Ambiguous Problem Resource
549: $r->internal_redirect('/adm/ambiguous');
550: }
551: }
552: return OK;
553: }
554:
555: 1;
556: __END__
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