1: # The LearningOnline Network
2: # Feedback
3: #
4: # $Id: lonfeedback.pm,v 1.22 2002/01/01 16:39:32 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 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',$ENV{'request.course.id'})) {
203: $options.='<br><input type=checkbox name=discuss> '.
204: '<b>Contribution to course discussion of resource</b>';
205: $options.='<br><input type=checkbox name=anondiscuss> '.
206: '<b>Anonymous contribution to course discussion of resource</b>'.
207: ' (name only visible to course faculty)';
208: }
209: }
210: return $options;
211: }
212:
213: sub resource_output {
214: my ($feedurl) = @_;
215: my $usersaw=&Apache::lonnet::ssi($feedurl);
216: $usersaw=~s/\<body[^\>]*\>//gi;
217: $usersaw=~s/\<\/body\>//gi;
218: $usersaw=~s/\<html\>//gi;
219: $usersaw=~s/\<\/html\>//gi;
220: $usersaw=~s/\<head\>//gi;
221: $usersaw=~s/\<\/head\>//gi;
222: $usersaw=~s/action\s*\=/would_be_action\=/gi;
223: return $usersaw;
224: }
225:
226: sub clear_out_html {
227: my $message=$ENV{'form.comment'};
228: $message=~s/\</\<\;/g;
229: $message=~s/\>/\>\;/g;
230: return $message;
231: }
232:
233: sub assemble_email {
234: my ($feedurl,$message,$prevattempts,$usersaw)=@_;
235: my $email=<<"ENDEMAIL";
236: Refers to <a href="$feedurl">$feedurl</a>
237:
238: $message
239: ENDEMAIL
240: my $citations=<<"ENDCITE";
241: <h2>Previous attempts of student (if applicable)</h2>
242: $prevattempts
243: <p><hr>
244: <h2>Original screen output (if applicable)</h2>
245: $usersaw
246: ENDCITE
247: return ($email,$citations);
248: }
249:
250: sub decide_receiver {
251: my ($feedurl) = @_;
252: my $typestyle='';
253: my %to=();
254: if ($ENV{'form.author'}) {
255: $typestyle.='Submitting as Author Feedback<br>';
256: $feedurl=~/^\/res\/(\w+)\/(\w+)\//;
257: $to{$2.':'.$1}=1;
258: }
259: if ($ENV{'form.question'}) {
260: $typestyle.='Submitting as Question<br>';
261: map {
262: $to{$_}=1;
263: } split(/\,/,
264: $ENV{'course.'.$ENV{'request.course.id'}.'.question.email'});
265: }
266: if ($ENV{'form.course'}) {
267: $typestyle.='Submitting as Comment<br>';
268: map {
269: $to{$_}=1;
270: } split(/\,/,
271: $ENV{'course.'.$ENV{'request.course.id'}.'.comment.email'});
272: }
273: if ($ENV{'form.policy'}) {
274: $typestyle.='Submitting as Policy Feedback<br>';
275: map {
276: $to{$_}=1;
277: } split(/\,/,
278: $ENV{'course.'.$ENV{'request.course.id'}.'.policy.email'});
279: }
280: return ($typestyle,%to);
281: }
282:
283: sub send_msg {
284: my ($feedurl,$email,$citations,%to)=@_;
285: my $status='';
286: my $sendsomething=0;
287: map {
288: if ($_) {
289: my $declutter=&Apache::lonnet::declutter($feedurl);
290: unless (&Apache::lonmsg::user_normal_msg(split(/\:/,$_),
291: 'Feedback ['.$declutter.']',$email,$citations) eq 'ok') {
292: $status.='<br>Error sending message to '.$_.'<br>';
293: } else {
294: $sendsomething++;
295: }
296: }
297: } keys %to;
298:
299: my %record=&Apache::lonnet::restore('_feedback');
300: my ($temp)=keys %record;
301: unless ($temp=~/^error\:/) {
302: my %newrecord=();
303: $newrecord{'resource'}=$feedurl;
304: $newrecord{'subnumber'}=$record{'subnumber'}+1;
305: unless (&Apache::lonnet::cstore(\%newrecord,'_feedback') eq 'ok') {
306: $status.='<br>Not registered<br>';
307: }
308: }
309:
310: return ($status,$sendsomething);
311: }
312:
313: sub adddiscuss {
314: my ($symb,$email,$anon)=@_;
315: my $status='';
316: if (&Apache::lonnet::allowed('pch',$ENV{'request.course.id'})) {
317:
318: my %contrib=('message' => $email,
319: 'sendername' => $ENV{'user.name'},
320: 'senderdomain' => $ENV{'user.domain'});
321: if ($anon) {
322: $contrib{'anonymous'}='true';
323: }
324: if (($symb) && ($email)) {
325: $status='Adding to class discussion'.($anon?' (anonymous)':'').': '.
326: &Apache::lonnet::store(\%contrib,$symb,$ENV{'request.course.id'},
327: $ENV{'course.'.$ENV{'request.course.id'}.'.domain'},
328: $ENV{'course.'.$ENV{'request.course.id'}.'.num'});
329: my %storenewentry=($symb => time);
330: $status.='<br>Updating discussion time: '.
331: &Apache::lonnet::put('discussiontimes',\%storenewentry,
332: $ENV{'course.'.$ENV{'request.course.id'}.'.domain'},
333: $ENV{'course.'.$ENV{'request.course.id'}.'.num'});
334: }
335: my %record=&Apache::lonnet::restore('_discussion');
336: my ($temp)=keys %record;
337: unless ($temp=~/^error\:/) {
338: my %newrecord=();
339: $newrecord{'resource'}=$symb;
340: $newrecord{'subnumber'}=$record{'subnumber'}+1;
341: $status.='<br>Registering: '.
342: &Apache::lonnet::cstore(\%newrecord,'_discussion');
343: }
344: } else {
345: $status.='Failed.';
346: }
347: return $status.'<br>';
348: }
349:
350: sub handler {
351: my $r = shift;
352: if ($r->header_only) {
353: $r->content_type('text/html');
354: $r->send_http_header;
355: return OK;
356: }
357:
358: # --------------------------- Get query string for limited number of parameters
359:
360: map {
361: my ($name, $value) = split(/=/,$_);
362: $value =~ tr/+/ /;
363: $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
364: if (($name eq 'hide') || ($name eq 'unhide')) {
365: unless ($ENV{'form.'.$name}) {
366: $ENV{'form.'.$name}=$value;
367: }
368: }
369: } (split(/&/,$ENV{'QUERY_STRING'}));
370:
371: if (($ENV{'form.hide'}) || ($ENV{'form.unhide'})) {
372: # ----------------------------------------------------------------- Hide/unhide
373: $r->content_type('text/html');
374: $r->send_http_header;
375:
376: my $entry=$ENV{'form.hide'}?$ENV{'form.hide'}:$ENV{'form.unhide'};
377:
378: my ($symb,$idx)=split(/\:\:\:/,$entry);
379: my ($map,$ind,$url)=split(/\_\_\_/,$symb);
380:
381: my %contrib=&Apache::lonnet::restore($symb,$ENV{'request.course.id'},
382: $ENV{'course.'.$ENV{'request.course.id'}.'.domain'},
383: $ENV{'course.'.$ENV{'request.course.id'}.'.num'});
384:
385:
386: my $currenthidden=$contrib{'hidden'};
387:
388: if ($ENV{'form.hide'}) {
389: $currenthidden.='.'.$idx.'.';
390: } else {
391: $currenthidden=~s/\.$idx\.//g;
392: }
393: my %newhash=('hidden' => $currenthidden);
394:
395: &Apache::lonnet::store(\%newhash,$symb,$ENV{'request.course.id'},
396: $ENV{'course.'.$ENV{'request.course.id'}.'.domain'},
397: $ENV{'course.'.$ENV{'request.course.id'}.'.num'});
398:
399: &redirect_back($r,'/res/'.$url,'Changed discussion status<p>','0');
400:
401:
402: } else {
403: # ------------------------------------------------------------- Normal feedback
404: my $feedurl=$ENV{'form.postdata'};
405: $feedurl=~s/^http\:\/\///;
406: $feedurl=~s/^$ENV{'SERVER_NAME'}//;
407: $feedurl=~s/^$ENV{'HTTP_HOST'}//;
408:
409: my $symb=&Apache::lonnet::symbread($feedurl);
410: my $goahead=1;
411: if ($feedurl=~/\.(problem|exam|quiz|assess|survey|form)$/) {
412: unless ($symb) { $goahead=0; }
413: }
414:
415: if ($goahead) {
416: # Go ahead with feedback, no ambiguous reference
417: $r->content_type('text/html');
418: $r->send_http_header;
419:
420: if (
421: (
422: ($feedurl=~m:^/res:) && ($feedurl!~m:^/res/adm:)
423: )
424: ||
425: ($ENV{'request.course.id'} && ($feedurl!~m:^/adm:))
426: ) {
427: # --------------------------------------------------- Print login screen header
428: unless ($ENV{'form.sendit'}) {
429: my $options=&screen_header($feedurl);
430: if ($options) {
431: &mail_screen($r,$feedurl,$options);
432: } else {
433: &fail_redirect($r,$feedurl);
434: }
435: } else {
436:
437: # Get previous user input
438: my $prevattempts=&Apache::loncommon::get_previous_attempt(
439: $symb,$ENV{'user.name'},$ENV{'user.domain'},
440: $ENV{'request.course.id'});
441:
442: # Get output from resource
443: my $usersaw=&resource_output($feedurl);
444:
445: # Filter HTML out of message (could be nasty)
446: my $message=&clear_out_html;
447:
448: # Assemble email
449: my ($email,$citations)=&assemble_email($feedurl,$message,$prevattempts,
450: $usersaw);
451:
452: # Who gets this?
453: my ($typestyle,%to) = &decide_receiver($feedurl);
454:
455: # Actually send mail
456: my ($status,$numsent)=&send_msg($feedurl,$email,$citations,%to);
457:
458: # Discussion? Store that.
459:
460: if ($ENV{'form.discuss'}) {
461: $typestyle.=&adddiscuss($symb,$message);
462: }
463:
464: if ($ENV{'form.anondiscuss'}) {
465: $typestyle.=&adddiscuss($symb,$message,1);
466: }
467:
468:
469: # Receipt screen and redirect back to where came from
470: &redirect_back($r,$feedurl,$typestyle,$numsent,$status);
471:
472: }
473: } else {
474: # Unable to give feedback
475: &no_redirect_back($r,$feedurl);
476: }
477: } else {
478: # Ambiguous Problem Resource
479: $r->internal_redirect('/adm/ambiguous');
480: }
481: }
482: return OK;
483: }
484:
485: 1;
486: __END__
487:
488:
489:
490:
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