1: # The LearningOnline Network
2: # Feedback
3: #
4: # $Id: lonfeedback.pm,v 1.19 2001/12/19 17:17:46 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 Gerd Kortemeyer
43:
44:
45: package Apache::lonfeedback;
46:
47: use strict;
48: use Apache::Constants qw(:common);
49: use Apache::lonmsg();
50: use Apache::loncommon();
51:
52: sub mail_screen {
53: my ($r,$feedurl,$options) = @_;
54: $r->print(<<ENDDOCUMENT);
55: <html>
56: <head>
57: <title>The LearningOnline Network with CAPA</title>
58: <meta http-equiv="pragma" content="no-cache"></meta>
59: <script>
60: function gosubmit() {
61: var rec=0;
62: if (typeof(document.mailform.elements.author)!="undefined") {
63: if (document.mailform.elements.author.checked) {
64: rec=1;
65: }
66: }
67: if (typeof(document.mailform.elements.question)!="undefined") {
68: if (document.mailform.elements.question.checked) {
69: rec=1;
70: }
71: }
72: if (typeof(document.mailform.elements.course)!="undefined") {
73: if (document.mailform.elements.course.checked) {
74: rec=1;
75: }
76: }
77: if (typeof(document.mailform.elements.policy)!="undefined") {
78: if (document.mailform.elements.policy.checked) {
79: rec=1;
80: }
81: }
82: if (typeof(document.mailform.elements.discuss)!="undefined") {
83: if (document.mailform.elements.discuss.checked) {
84: rec=1;
85: }
86: }
87: if (typeof(document.mailform.elements.anondiscuss)!="undefined") {
88: if (document.mailform.elements.anondiscuss.checked) {
89: rec=1;
90: }
91: }
92:
93: if (rec) {
94: document.mailform.submit();
95: } else {
96: alert('Please check a feedback type.');
97: }
98: }
99: </script>
100: </head>
101: <body bgcolor="#FFFFFF" onLoad="window.focus();">
102: <img align=right src=/adm/lonIcons/lonlogos.gif>
103: <h1>Feedback</h1>
104: <h2><tt>$feedurl</tt></h2>
105: <form action="/adm/feedback" method=post name=mailform>
106: <input type=hidden name=postdata value="$feedurl">
107: Please check at least one of the following feedback types:
108: $options<hr>
109: My question/comment/feedback:<p>
110: <textarea name=comment cols=60 rows=10 wrap=hard>
111: </textarea><p>
112: <input type=hidden name=sendit value=1>
113: <input type=button value="Send Feedback" onClick='gosubmit();'></input>
114: </form>
115: </body>
116: </html>
117: ENDDOCUMENT
118: }
119:
120: sub fail_redirect {
121: my ($r,$feedurl) = @_;
122: $r->print (<<ENDFAILREDIR);
123: <head><title>Feedback not sent</title>
124: <meta http-equiv="pragma" content="no-cache"></meta>
125: <meta HTTP-EQUIV="Refresh" CONTENT="2; url=$feedurl">
126: </head>
127: <html>
128: <body bgcolor="#FFFFFF">
129: <img align=right src=/adm/lonIcons/lonlogos.gif>
130: <b>Sorry, no recipients ...</b>
131: </body>
132: </html>
133: ENDFAILREDIR
134: }
135:
136: sub redirect_back {
137: my ($r,$feedurl,$typestyle,$sendsomething,$status) = @_;
138: $r->print (<<ENDREDIR);
139: <head>
140: <title>Feedback sent</title>
141: <meta http-equiv="pragma" content="no-cache"></meta>
142: <meta HTTP-EQUIV="Refresh" CONTENT="2; url=$feedurl">
143: </head>
144: <html>
145: <body bgcolor="#FFFFFF">
146: <img align=right src=/adm/lonIcons/lonlogos.gif>
147: $typestyle
148: <b>Sent $sendsomething message(s).</b>
149: <font color=red>$status</font>
150: </body>
151: </html>
152: ENDREDIR
153: }
154:
155: sub no_redirect_back {
156: my ($r,$feedurl) = @_;
157: $r->print (<<ENDNOREDIR);
158: <head><title>Feedback not sent</title>
159: <meta http-equiv="pragma" content="no-cache"></meta>
160: ENDNOREDIR
161:
162: if ($feedurl!~/^\/adm\/feedback/) {
163: $r->print('<meta HTTP-EQUIV="Refresh" CONTENT="2; url='.$feedurl.'">');
164: }
165:
166: $r->print (<<ENDNOREDIRTWO);
167: </head>
168: <html>
169: <body bgcolor="#FFFFFF">
170: <img align=right src=/adm/lonIcons/lonlogos.gif>
171: <b>Sorry, no feedback possible on this resource ...</b>
172: </body>
173: </html>
174: ENDNOREDIRTWO
175: }
176:
177: sub screen_header {
178: my ($feedurl) = @_;
179: my $options='';
180: if (($feedurl=~/^\/res/) && ($feedurl!~/^\/res\/adm/)) {
181: $options=
182: '<p><input type=checkbox name=author> Feedback to resource author';
183: }
184: if ($ENV{'course.'.$ENV{'request.course.id'}.'.question.email'}) {
185: $options.=
186: '<br><input type=checkbox name=question> Question about resource content';
187: }
188: if ($ENV{'course.'.$ENV{'request.course.id'}.'.comment.email'}) {
189: $options.=
190: '<br><input type=checkbox name=course> '.
191: 'Question/Comment/Feedback about course content';
192: }
193: if ($ENV{'course.'.$ENV{'request.course.id'}.'.policy.email'}) {
194: $options.=
195: '<br><input type=checkbox name=policy> '.
196: 'Question/Comment/Feedback about course policy';
197: }
198: if ($ENV{'request.course.id'}) {
199: $options.='<br><input type=checkbox name=discuss> '.
200: '<b>Contribution to course discussion of resource</b>';
201: }
202: if ($ENV{'request.course.id'}) {
203: $options.='<br><input type=checkbox name=anondiscuss> '.
204: '<b>Anonymous contribution to course discussion of resource</b>'.
205: ' (name only visible to course faculty)';
206: }
207: return $options;
208: }
209:
210: sub resource_output {
211: my ($feedurl) = @_;
212: my $usersaw=&Apache::lonnet::ssi($feedurl);
213: $usersaw=~s/\<body[^\>]*\>//gi;
214: $usersaw=~s/\<\/body\>//gi;
215: $usersaw=~s/\<html\>//gi;
216: $usersaw=~s/\<\/html\>//gi;
217: $usersaw=~s/\<head\>//gi;
218: $usersaw=~s/\<\/head\>//gi;
219: $usersaw=~s/action\s*\=/would_be_action\=/gi;
220: return $usersaw;
221: }
222:
223: sub clear_out_html {
224: my $message=$ENV{'form.comment'};
225: $message=~s/\</\<\;/g;
226: $message=~s/\>/\>\;/g;
227: return $message;
228: }
229:
230: sub assemble_email {
231: my ($feedurl,$message,$prevattempts,$usersaw)=@_;
232: my $email=<<"ENDEMAIL";
233: Refers to <a href="$feedurl">$feedurl</a>
234:
235: $message
236: ENDEMAIL
237: my $citations=<<"ENDCITE";
238: <h2>Previous attempts of student (if applicable)</h2>
239: $prevattempts
240: <p><hr>
241: <h2>Original screen output (if applicable)</h2>
242: $usersaw
243: ENDCITE
244: return ($email,$citations);
245: }
246:
247: sub decide_receiver {
248: my ($feedurl) = @_;
249: my $typestyle='';
250: my %to=();
251: if ($ENV{'form.author'}) {
252: $typestyle.='Submitting as Author Feedback<br>';
253: $feedurl=~/^\/res\/(\w+)\/(\w+)\//;
254: $to{$2.':'.$1}=1;
255: }
256: if ($ENV{'form.question'}) {
257: $typestyle.='Submitting as Question<br>';
258: map {
259: $to{$_}=1;
260: } split(/\,/,
261: $ENV{'course.'.$ENV{'request.course.id'}.'.question.email'});
262: }
263: if ($ENV{'form.course'}) {
264: $typestyle.='Submitting as Comment<br>';
265: map {
266: $to{$_}=1;
267: } split(/\,/,
268: $ENV{'course.'.$ENV{'request.course.id'}.'.comment.email'});
269: }
270: if ($ENV{'form.policy'}) {
271: $typestyle.='Submitting as Policy Feedback<br>';
272: map {
273: $to{$_}=1;
274: } split(/\,/,
275: $ENV{'course.'.$ENV{'request.course.id'}.'.policy.email'});
276: }
277: return ($typestyle,%to);
278: }
279:
280: sub send_msg {
281: my ($feedurl,$email,$citations,%to)=@_;
282: my $status='';
283: my $sendsomething=0;
284: map {
285: if ($_) {
286: unless (&Apache::lonmsg::user_normal_msg(split(/\:/,$_),
287: 'Feedback '.$feedurl,$email,$citations) eq 'ok') {
288: $status.='<br>Error sending message to '.$_.'<br>';
289: } else {
290: $sendsomething++;
291: }
292: }
293: } keys %to;
294:
295: my %record=&Apache::lonnet::restore('_feedback');
296: my ($temp)=keys %record;
297: unless ($temp=~/^error\:/) {
298: my %newrecord=();
299: $newrecord{'resource'}=$feedurl;
300: $newrecord{'subnumber'}=$record{'subnumber'}+1;
301: unless (&Apache::lonnet::cstore(\%newrecord,'_feedback') eq 'ok') {
302: $status.='<br>Not registered<br>';
303: }
304: }
305:
306: return ($status,$sendsomething);
307: }
308:
309: sub adddiscuss {
310: my ($symb,$email,$anon)=@_;
311: my $status='';
312: my %contrib=('message' => $email,
313: 'sendername' => $ENV{'user.name'},
314: 'senderdomain' => $ENV{'user.domain'});
315: if ($anon) {
316: $contrib{'anonymous'}='true';
317: }
318: if (($symb) && ($email)) {
319: $status='Adding to class discussion'.($anon?' (anonymous)':'').': '.
320: &Apache::lonnet::store(\%contrib,$symb,$ENV{'request.course.id'},
321: $ENV{'course.'.$ENV{'request.course.id'}.'.domain'},
322: $ENV{'course.'.$ENV{'request.course.id'}.'.num'});
323: }
324: my %record=&Apache::lonnet::restore('_discussion');
325: my ($temp)=keys %record;
326: unless ($temp=~/^error\:/) {
327: my %newrecord=();
328: $newrecord{'resource'}=$symb;
329: $newrecord{'subnumber'}=$record{'subnumber'}+1;
330: $status.=' '.&Apache::lonnet::cstore(\%newrecord,'_discussion');
331: }
332: return $status.'<br>';
333: }
334:
335: sub handler {
336: my $r = shift;
337: if ($r->header_only) {
338: $r->content_type('text/html');
339: $r->send_http_header;
340: return OK;
341: }
342:
343: # --------------------------- Get query string for limited number of parameters
344:
345: map {
346: my ($name, $value) = split(/=/,$_);
347: $value =~ tr/+/ /;
348: $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
349: if (($name eq 'hide') || ($name eq 'unhide')) {
350: unless ($ENV{'form.'.$name}) {
351: $ENV{'form.'.$name}=$value;
352: }
353: }
354: } (split(/&/,$ENV{'QUERY_STRING'}));
355:
356: if (($ENV{'form.hide'}) || ($ENV{'form.unhide'})) {
357: # ----------------------------------------------------------------- Hide/unhide
358: $r->content_type('text/html');
359: $r->send_http_header;
360:
361: my $entry=$ENV{'form.hide'}?$ENV{'form.hide'}:$ENV{'form.unhide'};
362:
363: my ($symb,$idx)=split(/\:\:\:/,$entry);
364: my ($map,$ind,$url)=split(/\_\_\_/,$symb);
365:
366: my %contrib=&Apache::lonnet::restore($symb,$ENV{'request.course.id'},
367: $ENV{'course.'.$ENV{'request.course.id'}.'.domain'},
368: $ENV{'course.'.$ENV{'request.course.id'}.'.num'});
369:
370:
371: my $currenthidden=$contrib{'hidden'};
372:
373: if ($ENV{'form.hide'}) {
374: $currenthidden.='.'.$idx.'.';
375: } else {
376: $currenthidden=~s/\.$idx\.//g;
377: }
378: my %newhash=('hidden' => $currenthidden);
379:
380: &Apache::lonnet::store(\%newhash,$symb,$ENV{'request.course.id'},
381: $ENV{'course.'.$ENV{'request.course.id'}.'.domain'},
382: $ENV{'course.'.$ENV{'request.course.id'}.'.num'});
383:
384: &redirect_back($r,'/res/'.$url,'Changed discussion status<p>','0');
385:
386:
387: } else {
388: # ------------------------------------------------------------- Normal feedback
389: my $feedurl=$ENV{'form.postdata'};
390: $feedurl=~s/^http\:\/\///;
391: $feedurl=~s/^$ENV{'SERVER_NAME'}//;
392: $feedurl=~s/^$ENV{'HTTP_HOST'}//;
393:
394: my $symb=&Apache::lonnet::symbread($feedurl);
395: my $goahead=1;
396: if ($feedurl=~/\.(problem|exam|quiz|assess|survey|form)$/) {
397: unless ($symb) { $goahead=0; }
398: }
399:
400: if ($goahead) {
401: # Go ahead with feedback, no ambiguous reference
402: $r->content_type('text/html');
403: $r->send_http_header;
404:
405: if (
406: (
407: ($feedurl=~m:^/res:) && ($feedurl!~m:^/res/adm:)
408: )
409: ||
410: ($ENV{'request.course.id'} && ($feedurl!~m:^/adm:))
411: ) {
412: # --------------------------------------------------- Print login screen header
413: unless ($ENV{'form.sendit'}) {
414: my $options=&screen_header($feedurl);
415: if ($options) {
416: &mail_screen($r,$feedurl,$options);
417: } else {
418: &fail_redirect($r,$feedurl);
419: }
420: } else {
421:
422: # Get previous user input
423: my $prevattempts=&Apache::loncommon::get_previous_attempt(
424: $symb,$ENV{'user.name'},$ENV{'user.domain'},
425: $ENV{'request.course.id'});
426:
427: # Get output from resource
428: my $usersaw=&resource_output($feedurl);
429:
430: # Filter HTML out of message (could be nasty)
431: my $message=&clear_out_html;
432:
433: # Assemble email
434: my ($email,$citations)=&assemble_email($feedurl,$message,$prevattempts,
435: $usersaw);
436:
437: # Who gets this?
438: my ($typestyle,%to) = &decide_receiver($feedurl);
439:
440: # Actually send mail
441: my ($status,$numsent)=&send_msg($feedurl,$email,$citations,%to);
442:
443: # Discussion? Store that.
444:
445: if ($ENV{'form.discuss'}) {
446: $typestyle.=&adddiscuss($symb,$message);
447: }
448:
449: if ($ENV{'form.anondiscuss'}) {
450: $typestyle.=&adddiscuss($symb,$message,1);
451: }
452:
453:
454: # Receipt screen and redirect back to where came from
455: &redirect_back($r,$feedurl,$typestyle,$numsent,$status);
456:
457: }
458: } else {
459: # Unable to give feedback
460: &no_redirect_back($r,$feedurl);
461: }
462: } else {
463: # Ambiguous Problem Resource
464: $r->internal_redirect('/adm/ambiguous');
465: }
466: }
467: return OK;
468: }
469:
470: 1;
471: __END__
472:
473:
474:
475:
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