1: # The LearningOnline Network with CAPA
2: # Handler to show and edit custom distribution rights
3: #
4: # $Id: lonrights.pm,v 1.28 2009/12/02 15:28:51 bisitz 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: #
29: ###
30:
31: package Apache::lonrights;
32:
33: use strict;
34: use Apache::Constants qw(:common :http);
35: use Apache::lonnet;
36: use Apache::loncommon();
37: use HTML::LCParser;
38: use Apache::File;
39: use Apache::lonlocal;
40:
41: sub handler {
42:
43: my $r=shift;
44: my $target = $env{'form.grade_target'};
45: if ($target eq 'meta') {
46: &Apache::loncommon::content_type($r,'text/html');
47: $r->send_http_header;
48: $env{'request.uri'}=$r->uri;
49: my $file = &Apache::lonnet::filelocation("",$r->uri);
50: my $content=&Apache::lonnet::getfile($file);
51: my $result=&Apache::lonxml::xmlparse(undef,'meta',$content);
52: $r->print($result);
53: return OK;
54: }
55: &Apache::loncommon::content_type($r,'text/html');
56: $r->send_http_header;
57:
58: # Breadcrumbs
59: &Apache::lonhtmlcommon::clear_breadcrumbs();
60: &Apache::lonhtmlcommon::add_breadcrumb({
61: 'text' => 'Construction Space',
62: 'href' => &Apache::loncommon::authorspace(),
63: });
64: &Apache::lonhtmlcommon::add_breadcrumb({
65: 'text' => 'Custom Rights Editor',
66: 'title' => 'Custom Distribution Rights Editor',
67: 'href' => '',});
68:
69: my $js = &Apache::loncommon::coursebrowser_javascript().
70: &Apache::loncommon::studentbrowser_javascript();
71: # Breadcrumbs are included by &start_page
72: $r->print(&Apache::loncommon::start_page('Custom Distribution Rights',$js)
73: .&Apache::loncommon::head_subbox(
74: &Apache::loncommon::CSTR_pageheader())
75: );
76: $r->rflush();
77:
78: my $uri=$r->uri;
79: my $fn=&Apache::lonnet::filelocation('',$uri);
80: my $contents='';
81: my $constructmode=($uri=~/^\/\~/);
82:
83: # ============================================================ Modify and store
84: if ($constructmode && $env{'form.store'}) {
85:
86: my @newrules;
87:
88: # read rules from form
89: foreach my $key (keys(%env)) {
90: next if ($key!~/^form\.effect\_(\d+)$/);
91: my $number=$1;
92: my %rulehash;
93: foreach my $action ('effect','type','domain','course','section','role') {
94: $rulehash{$action}=$env{'form.'.$action.'_'.$number};
95: }
96: if ($rulehash{'type'} !~ /^(user|course)$/) {
97: $rulehash{'type'} = 'course';
98: }
99: if ($rulehash{'type'} eq 'user') {
100: $rulehash{'section'}='';
101: $rulehash{'role'}='';
102: }
103: if ($rulehash{'role'} eq 'au') {
104: $rulehash{'course'}='';
105: $rulehash{'section'}='';
106: }
107: if ($rulehash{'role'} eq 'cc') {
108: $rulehash{'section'}='';
109: }
110: unless (($rulehash{'effect'} eq 'deny') ||
111: ($rulehash{'effect'} eq 'allow')) {
112: $rulehash{'effect'}='deny';
113: }
114: $rulehash{'domain'} =
115: &LONCAPA::clean_domain($rulehash{'domain'});
116: if ($rulehash{'type'} eq 'course') {
117: $rulehash{'course'} =
118: &LONCAPA::clean_courseid($rulehash{'course'});
119: } else {
120: $rulehash{'course'} =
121: &LONCAPA::clean_username($rulehash{'course'});
122: }
123: $rulehash{'section'}=~s/\W//g;
124: if (!$rulehash{'domain'}) {
125: $rulehash{'domain'}=$env{'user.domain'};
126: }
127: my $realm='';
128: my $separator = ($rulehash{'type'} eq 'course') ? '_' : '/';
129: if ($number) {
130: $realm=$rulehash{'domain'};
131: if ($rulehash{'course'}) {
132: $realm.=$separator.$rulehash{'course'};
133: }
134: if ($rulehash{'section'}) {
135: $realm.=$separator.$rulehash{'section'};
136: }
137: }
138: $newrules[$number]=$rulehash{'effect'}.':'.
139: $realm.':'.$rulehash{'role'}.':'.$rulehash{'type'};
140: }
141: # edit actions?
142: foreach my $key (keys(%env)) {
143: next if ($key!~/^form\.action\_(\d+)$/);
144: my $number=$1;
145: if ($env{$key} eq 'delete') { splice(@newrules,$number,1); }
146: if (($env{$key} eq 'moveup') && ($number>1)) {
147: @newrules[$number-1,$number] = @newrules[$number,$number-1];
148: }
149: if (($env{$key} eq 'movedown') && ($number<$#newrules)) {
150: @newrules[$number+1,$number] = @newrules[$number,$number+1];
151: }
152: if ($env{$key} eq 'insertabove') {
153: splice(@newrules,$number,0,'deny');
154: }
155: if ($env{$key} eq 'insertbelow') {
156: splice(@newrules,$number+1,0,'deny');
157: }
158: }
159:
160: # store file
161: my $fh=Apache::File->new('>'.$fn);
162: foreach (my $i=0;$i<=$#newrules;$i++) {
163: if ($newrules[$i]) {
164: my ($effect,$realm,$role,$type)=split(/\:/,$newrules[$i]);
165: print $fh
166: "<accessrule effect='$effect' realm='$realm' role='$role' type='$type' />\n";
167: }
168: }
169: $fh->close;
170: }
171: # ============================================================ Read and display
172: unless ($constructmode) {
173: # =========================================== This is not in construction space
174: $contents=&Apache::lonnet::getfile($fn);
175: if ($contents==-1) { $contents=''; }
176: } else {
177: # =============================================== This is in construction space
178: if (-e $fn) {
179: my $fh=Apache::File->new($fn);
180: $contents=join('',<$fh>);
181: $fh->close();
182: }
183: $r->print('<form name="rules" method="post">');
184: }
185: unless ($contents=~/\<accessrule/s) {
186: $contents='<accessrule effect="deny" />';
187: }
188: my $parser=HTML::LCParser->new(\$contents);
189: my $token;
190: my $rulecounter=0;
191: my $colzero=&mt($constructmode?'Edit action':'Rule');
192: my %lt=&Apache::lonlocal::texthash(
193: 'ef' => 'Effect',
194: 'ty' => 'Type',
195: 'do' => 'Domain',
196: 'co' => 'Course / User',
197: 'se' => 'Section',
198: 'ro' => 'Role');
199: # ---------------------------------------------------------- Start table output
200: $r->print(&Apache::loncommon::start_data_table().
201: &Apache::loncommon::start_data_table_header_row().
202: "<th>$colzero</th><th>$lt{'ef'}</th><th>$lt{'ty'}</th><th>$lt{'do'}</th>".
203: "<th>$lt{'co'}</th><th>$lt{'se'}</th><th>$lt{'ro'}</th>".
204: &Apache::loncommon::end_data_table_header_row());
205: # --------------------------------------------------------------------- Default
206: # Fast forward to first rule
207: $token=$parser->get_token;
208: while ($token->[1] ne 'accessrule') { $token=$parser->get_token; }
209: # print default
210: $r->print(&Apache::loncommon::start_data_table_row().'<td align="right">');
211: if ($constructmode) {
212: $r->print(&Apache::loncommon::select_form('','action_0',
213: ('' => '',
214: 'insertbelow' => 'Insert rule below')));
215:
216: } else {
217: $r->print(' ');
218: }
219: $r->print('</td><td>');
220: if ($constructmode) {
221: $r->print(&Apache::loncommon::select_form
222: ($token->[2]->{'effect'},'effect_0',
223: ('allow' => 'allow',
224: 'deny' => 'deny')));
225: } else {
226: $r->print($token->[2]->{'effect'});
227: }
228: $r->print('</td><td colspan="5">'.&mt('Default'));
229: if (($token->[2]->{'realm'}) || ($token->[2]->{'role'})) {
230: $r->print(' - <span class="LC_error">'.&mt('Error! No default set.').
231: '</span>');
232: }
233: $r->print('</td>'.&Apache::loncommon::end_data_table_row());
234: # Additional roles
235: while ($token=$parser->get_token) {
236: if (($token->[0] eq 'S') && ($token->[1] eq 'accessrule')) {
237: $rulecounter++;
238: $r->print(&Apache::loncommon::start_data_table_row().
239: '<td align="right" rowspan="2">');
240: # insert, delete, etc
241: $r->print('<span class="LC_nobreak">'.$rulecounter.'. ');
242: if ($constructmode) {
243: $r->print(&Apache::loncommon::select_form(
244: '','action_'.$rulecounter,
245: ('' => '',
246: 'delete' => 'Delete this rule',
247: 'insertabove' => 'Insert rule above',
248: 'insertbelow' => 'Insert rule below',
249: 'moveup' => 'Move rule up',
250: 'movedown' => 'Move rule down')));
251: }
252: $r->print('</span></td>'.
253: '<td rowspan="2">');
254: # effect
255: if ($constructmode) {
256: $r->print(&Apache::loncommon::select_form
257: ($token->[2]->{'effect'},
258: 'effect_'.$rulecounter,
259: ('allow' => 'allow',
260: 'deny' => 'deny')));
261: } else {
262: $r->print($token->[2]->{'effect'});
263: }
264:
265: # type
266: $r->print('</td><td rowspan="2">');
267: my $type = ($token->[2]{'type'} || 'course');
268: if ($constructmode) {
269: $r->print(&Apache::loncommon::select_form($type,
270: 'type_'.$rulecounter,
271: ('course' => 'Course',
272: 'user' => 'User')));
273: } else {
274: $r->print($type);
275: }
276:
277: # ---- realm
278: my $realm=$token->[2]->{'realm'};
279: my ($rdom,$rcourse,$rsec);
280: if ($type eq 'course') {
281: ($rdom,$rcourse,$rsec) = split(m{[/_]},$realm,3);
282: $rcourse = &LONCAPA::clean_courseid($rcourse);
283: } else {
284: ($rdom,$rcourse,$rsec) = split(m{/},$realm,3);
285: $rcourse = &LONCAPA::clean_username($rcourse);
286: }
287: $r->print('</td><td>');
288: # realm domain
289: if ($constructmode) {
290: unless ($rdom) { $rdom=$env{'user.domain'}; }
291: $r->print(&Apache::loncommon::select_dom_form($rdom,
292: 'domain_'.$rulecounter));
293: } else {
294: $r->print($rdom);
295: }
296: $r->print('</td><td>');
297: # realm course
298: if ($constructmode) {
299: $r->print('<input type="text" size="25" name="course_'.
300: $rulecounter.'" value="'.$rcourse.'" />');
301: } else {
302: $r->print($rcourse);
303: }
304:
305: $r->print('</td><td rowspan="2">');
306: # realm section
307: if ($type eq 'course') {
308: if ($constructmode) {
309: $r->print('<input type="text" size="5" name="section_'.
310: $rulecounter.'" value="'.$rsec.'" />');
311: } else {
312: $r->print($rsec);
313: }
314: }
315:
316: $r->print('</td><td rowspan="2">');
317: # role
318: if ($type eq 'course') {
319: if ($constructmode) {
320: my %hash=('' => '');
321: foreach ('au','cc','in','ta','st') {
322: $hash{$_}=&Apache::lonnet::plaintext($_);
323: }
324: my $role=$token->[2]->{'role'};
325: unless ($role) { $role=''; }
326: $r->print(&Apache::loncommon::select_form(
327: $role,'role_'.$rulecounter,%hash));
328: } else {
329: $r->print(&Apache::lonnet::plaintext($token->[2]->{'role'}));
330: }
331: }
332: # course selection link
333: $r->print('</td>'.
334: &Apache::loncommon::end_data_table_row().
335: &Apache::loncommon::continue_data_table_row().
336: '<td colspan="2" align="right">');
337: if ($type eq 'course') {
338: if ($rcourse) {
339: my %descript=
340: &Apache::lonnet::coursedescription($rdom.'_'.$rcourse,
341: {'one_time' => 1});
342: $r->print($descript{'description'}.' ');
343: }
344: if ($constructmode) {
345: $r->print(&Apache::loncommon::selectcourse_link('rules',
346: 'course_'.$rulecounter,'domain_'.$rulecounter));
347: }
348: } else {
349: if ($rcourse) {
350: my $name = &Apache::loncommon::plainname($rcourse,$rdom);
351: $r->print($name.' ');
352: }
353: if ($constructmode) {
354: $r->print(&Apache::loncommon::selectstudent_link('rules','course_'.$rulecounter,'domain_'.$rulecounter));
355: }
356: }
357: # close row
358: $r->print('</td>'.&Apache::loncommon::end_data_table_row());
359: }
360: }
361: $r->print(&Apache::loncommon::end_data_table());
362: # ------------------------------------------------------------ End table output
363: if ($constructmode) {
364: $r->print('<input type="submit" name="store" value="'.&mt('Save').'" /></form>');
365: }
366: $r->print(&Apache::loncommon::end_page());
367: return OK;
368: }
369:
370:
371: 1;
372: __END__
373:
374:
375:
376:
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