1: # The LearningOnline Network
2: # Feedback
3: #
4: # $Id: lonfeedback.pm,v 1.23 2002/01/16 15:38:38 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:
54: sub mail_screen {
55: my ($r,$feedurl,$options) = @_;
56: $r->print(<<ENDDOCUMENT);
57: <html>
58: <head>
59: <title>The LearningOnline Network with CAPA</title>
60: <meta http-equiv="pragma" content="no-cache"></meta>
61: <script>
62: function gosubmit() {
63: var rec=0;
64: if (typeof(document.mailform.elements.author)!="undefined") {
65: if (document.mailform.elements.author.checked) {
66: rec=1;
67: }
68: }
69: if (typeof(document.mailform.elements.question)!="undefined") {
70: if (document.mailform.elements.question.checked) {
71: rec=1;
72: }
73: }
74: if (typeof(document.mailform.elements.course)!="undefined") {
75: if (document.mailform.elements.course.checked) {
76: rec=1;
77: }
78: }
79: if (typeof(document.mailform.elements.policy)!="undefined") {
80: if (document.mailform.elements.policy.checked) {
81: rec=1;
82: }
83: }
84: if (typeof(document.mailform.elements.discuss)!="undefined") {
85: if (document.mailform.elements.discuss.checked) {
86: rec=1;
87: }
88: }
89: if (typeof(document.mailform.elements.anondiscuss)!="undefined") {
90: if (document.mailform.elements.anondiscuss.checked) {
91: rec=1;
92: }
93: }
94:
95: if (rec) {
96: document.mailform.submit();
97: } else {
98: alert('Please check a feedback type.');
99: }
100: }
101: </script>
102: </head>
103: <body bgcolor="#FFFFFF" onLoad="window.focus();">
104: <img align=right src=/adm/lonIcons/lonlogos.gif>
105: <h1>Feedback</h1>
106: <h2><tt>$feedurl</tt></h2>
107: <form action="/adm/feedback" method=post name=mailform>
108: <input type=hidden name=postdata value="$feedurl">
109: Please check at least one of the following feedback types:
110: $options<hr>
111: My question/comment/feedback:<p>
112: <textarea name=comment cols=60 rows=10 wrap=hard>
113: </textarea><p>
114: <input type=hidden name=sendit value=1>
115: <input type=button value="Send Feedback" onClick='gosubmit();'></input>
116: </form>
117: </body>
118: </html>
119: ENDDOCUMENT
120: }
121:
122: sub fail_redirect {
123: my ($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,$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 $sendsomething message(s).</b>
151: <font color=red>$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: $options=
184: '<p><input type=checkbox name=author> Feedback to resource author';
185: }
186: if ($ENV{'course.'.$ENV{'request.course.id'}.'.question.email'}) {
187: $options.=
188: '<br><input type=checkbox name=question> Question about resource content';
189: }
190: if ($ENV{'course.'.$ENV{'request.course.id'}.'.comment.email'}) {
191: $options.=
192: '<br><input type=checkbox name=course> '.
193: 'Question/Comment/Feedback about course content';
194: }
195: if ($ENV{'course.'.$ENV{'request.course.id'}.'.policy.email'}) {
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/\</\<\;/g;
231: $message=~s/\>/\>\;/g;
232: return $message;
233: }
234:
235: sub assemble_email {
236: my ($feedurl,$message,$prevattempts,$usersaw)=@_;
237: my $email=<<"ENDEMAIL";
238: Refers to <a href="$feedurl">$feedurl</a>
239:
240: $message
241: ENDEMAIL
242: my $citations=<<"ENDCITE";
243: <h2>Previous attempts of student (if applicable)</h2>
244: $prevattempts
245: <p><hr>
246: <h2>Original screen output (if applicable)</h2>
247: $usersaw
248: ENDCITE
249: return ($email,$citations);
250: }
251:
252: sub decide_receiver {
253: my ($feedurl) = @_;
254: my $typestyle='';
255: my %to=();
256: if ($ENV{'form.author'}) {
257: $typestyle.='Submitting as Author Feedback<br>';
258: $feedurl=~/^\/res\/(\w+)\/(\w+)\//;
259: $to{$2.':'.$1}=1;
260: }
261: if ($ENV{'form.question'}) {
262: $typestyle.='Submitting as Question<br>';
263: map {
264: $to{$_}=1;
265: } split(/\,/,
266: $ENV{'course.'.$ENV{'request.course.id'}.'.question.email'});
267: }
268: if ($ENV{'form.course'}) {
269: $typestyle.='Submitting as Comment<br>';
270: map {
271: $to{$_}=1;
272: } split(/\,/,
273: $ENV{'course.'.$ENV{'request.course.id'}.'.comment.email'});
274: }
275: if ($ENV{'form.policy'}) {
276: $typestyle.='Submitting as Policy Feedback<br>';
277: map {
278: $to{$_}=1;
279: } split(/\,/,
280: $ENV{'course.'.$ENV{'request.course.id'}.'.policy.email'});
281: }
282: return ($typestyle,%to);
283: }
284:
285: sub send_msg {
286: my ($feedurl,$email,$citations,%to)=@_;
287: my $status='';
288: my $sendsomething=0;
289: map {
290: if ($_) {
291: my $declutter=&Apache::lonnet::declutter($feedurl);
292: unless (&Apache::lonmsg::user_normal_msg(split(/\:/,$_),
293: 'Feedback ['.$declutter.']',$email,$citations) eq 'ok') {
294: $status.='<br>Error sending message to '.$_.'<br>';
295: } else {
296: $sendsomething++;
297: }
298: }
299: } keys %to;
300:
301: my %record=&Apache::lonnet::restore('_feedback');
302: my ($temp)=keys %record;
303: unless ($temp=~/^error\:/) {
304: my %newrecord=();
305: $newrecord{'resource'}=$feedurl;
306: $newrecord{'subnumber'}=$record{'subnumber'}+1;
307: unless (&Apache::lonnet::cstore(\%newrecord,'_feedback') eq 'ok') {
308: $status.='<br>Not registered<br>';
309: }
310: }
311:
312: return ($status,$sendsomething);
313: }
314:
315: sub adddiscuss {
316: my ($symb,$email,$anon)=@_;
317: my $status='';
318: if (&Apache::lonnet::allowed('pch',$ENV{'request.course.id'}.
319: ($ENV{'request.course.sec'}?'/'.$ENV{'request.course.sec'}:''))) {
320:
321: my %contrib=('message' => $email,
322: 'sendername' => $ENV{'user.name'},
323: 'senderdomain' => $ENV{'user.domain'});
324: if ($anon) {
325: $contrib{'anonymous'}='true';
326: }
327: if (($symb) && ($email)) {
328: $status='Adding to class discussion'.($anon?' (anonymous)':'').': '.
329: &Apache::lonnet::store(\%contrib,$symb,$ENV{'request.course.id'},
330: $ENV{'course.'.$ENV{'request.course.id'}.'.domain'},
331: $ENV{'course.'.$ENV{'request.course.id'}.'.num'});
332: my %storenewentry=($symb => time);
333: $status.='<br>Updating discussion time: '.
334: &Apache::lonnet::put('discussiontimes',\%storenewentry,
335: $ENV{'course.'.$ENV{'request.course.id'}.'.domain'},
336: $ENV{'course.'.$ENV{'request.course.id'}.'.num'});
337: }
338: my %record=&Apache::lonnet::restore('_discussion');
339: my ($temp)=keys %record;
340: unless ($temp=~/^error\:/) {
341: my %newrecord=();
342: $newrecord{'resource'}=$symb;
343: $newrecord{'subnumber'}=$record{'subnumber'}+1;
344: $status.='<br>Registering: '.
345: &Apache::lonnet::cstore(\%newrecord,'_discussion');
346: }
347: } else {
348: $status.='Failed.';
349: }
350: return $status.'<br>';
351: }
352:
353: sub handler {
354: my $r = shift;
355: if ($r->header_only) {
356: $r->content_type('text/html');
357: $r->send_http_header;
358: return OK;
359: }
360:
361: # --------------------------- Get query string for limited number of parameters
362:
363: map {
364: my ($name, $value) = split(/=/,$_);
365: $value =~ tr/+/ /;
366: $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
367: if (($name eq 'hide') || ($name eq 'unhide')) {
368: unless ($ENV{'form.'.$name}) {
369: $ENV{'form.'.$name}=$value;
370: }
371: }
372: } (split(/&/,$ENV{'QUERY_STRING'}));
373:
374: if (($ENV{'form.hide'}) || ($ENV{'form.unhide'})) {
375: # ----------------------------------------------------------------- Hide/unhide
376: $r->content_type('text/html');
377: $r->send_http_header;
378:
379: my $entry=$ENV{'form.hide'}?$ENV{'form.hide'}:$ENV{'form.unhide'};
380:
381: my ($symb,$idx)=split(/\:\:\:/,$entry);
382: my ($map,$ind,$url)=split(/\_\_\_/,$symb);
383:
384: my %contrib=&Apache::lonnet::restore($symb,$ENV{'request.course.id'},
385: $ENV{'course.'.$ENV{'request.course.id'}.'.domain'},
386: $ENV{'course.'.$ENV{'request.course.id'}.'.num'});
387:
388:
389: my $currenthidden=$contrib{'hidden'};
390:
391: if ($ENV{'form.hide'}) {
392: $currenthidden.='.'.$idx.'.';
393: } else {
394: $currenthidden=~s/\.$idx\.//g;
395: }
396: my %newhash=('hidden' => $currenthidden);
397:
398: &Apache::lonnet::store(\%newhash,$symb,$ENV{'request.course.id'},
399: $ENV{'course.'.$ENV{'request.course.id'}.'.domain'},
400: $ENV{'course.'.$ENV{'request.course.id'}.'.num'});
401:
402: &redirect_back($r,'/res/'.$url,'Changed discussion status<p>','0');
403:
404:
405: } else {
406: # ------------------------------------------------------------- Normal feedback
407: my $feedurl=$ENV{'form.postdata'};
408: $feedurl=~s/^http\:\/\///;
409: $feedurl=~s/^$ENV{'SERVER_NAME'}//;
410: $feedurl=~s/^$ENV{'HTTP_HOST'}//;
411:
412: my $symb=&Apache::lonnet::symbread($feedurl);
413: my $goahead=1;
414: if ($feedurl=~/\.(problem|exam|quiz|assess|survey|form)$/) {
415: unless ($symb) { $goahead=0; }
416: }
417:
418: if ($goahead) {
419: # Go ahead with feedback, no ambiguous reference
420: $r->content_type('text/html');
421: $r->send_http_header;
422:
423: if (
424: (
425: ($feedurl=~m:^/res:) && ($feedurl!~m:^/res/adm:)
426: )
427: ||
428: ($ENV{'request.course.id'} && ($feedurl!~m:^/adm:))
429: ) {
430: # --------------------------------------------------- Print login screen header
431: unless ($ENV{'form.sendit'}) {
432: my $options=&screen_header($feedurl);
433: if ($options) {
434: &mail_screen($r,$feedurl,$options);
435: } else {
436: &fail_redirect($r,$feedurl);
437: }
438: } else {
439:
440: # Get previous user input
441: my $prevattempts=&Apache::loncommon::get_previous_attempt(
442: $symb,$ENV{'user.name'},$ENV{'user.domain'},
443: $ENV{'request.course.id'});
444:
445: # Get output from resource
446: my $usersaw=&resource_output($feedurl);
447:
448: # Filter HTML out of message (could be nasty)
449: my $message=&clear_out_html;
450:
451: # Assemble email
452: my ($email,$citations)=&assemble_email($feedurl,$message,$prevattempts,
453: $usersaw);
454:
455: # Who gets this?
456: my ($typestyle,%to) = &decide_receiver($feedurl);
457:
458: # Actually send mail
459: my ($status,$numsent)=&send_msg($feedurl,$email,$citations,%to);
460:
461: # Discussion? Store that.
462:
463: if ($ENV{'form.discuss'}) {
464: $typestyle.=&adddiscuss($symb,$message);
465: }
466:
467: if ($ENV{'form.anondiscuss'}) {
468: $typestyle.=&adddiscuss($symb,$message,1);
469: }
470:
471:
472: # Receipt screen and redirect back to where came from
473: &redirect_back($r,$feedurl,$typestyle,$numsent,$status);
474:
475: }
476: } else {
477: # Unable to give feedback
478: &no_redirect_back($r,$feedurl);
479: }
480: } else {
481: # Ambiguous Problem Resource
482: $r->internal_redirect('/adm/ambiguous');
483: }
484: }
485: return OK;
486: }
487:
488: 1;
489: __END__
490:
491:
492:
493:
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