1: # The LearningOnline Network with CAPA
2: # Handler to show and edit custom distribution rights
3: #
4: # $Id: lonrights.pm,v 1.25 2009/05/25 14:31:00 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: my $js = &Apache::loncommon::coursebrowser_javascript().
59: &Apache::loncommon::studentbrowser_javascript();
60: $r->print(&Apache::loncommon::start_page('Custom Distribution Rights',$js));
61: $r->rflush();
62:
63: my $uri=$r->uri;
64: my $fn=&Apache::lonnet::filelocation('',$uri);
65: my $contents='';
66: my $constructmode=($uri=~/^\/\~/);
67:
68: # ============================================================ Modify and store
69: if ($constructmode && $env{'form.store'}) {
70:
71: my @newrules;
72:
73: # read rules from form
74: foreach my $key (keys(%env)) {
75: next if ($key!~/^form\.effect\_(\d+)$/);
76: my $number=$1;
77: my %rulehash;
78: foreach my $action ('effect','type','domain','course','section','role') {
79: $rulehash{$action}=$env{'form.'.$action.'_'.$number};
80: }
81: if ($rulehash{'type'} !~ /^(user|course)$/) {
82: $rulehash{'type'} = 'course';
83: }
84: if ($rulehash{'type'} eq 'user') {
85: $rulehash{'section'}='';
86: $rulehash{'role'}='';
87: }
88: if ($rulehash{'role'} eq 'au') {
89: $rulehash{'course'}='';
90: $rulehash{'section'}='';
91: }
92: if ($rulehash{'role'} eq 'cc') {
93: $rulehash{'section'}='';
94: }
95: unless (($rulehash{'effect'} eq 'deny') ||
96: ($rulehash{'effect'} eq 'allow')) {
97: $rulehash{'effect'}='deny';
98: }
99: $rulehash{'domain'} =
100: &LONCAPA::clean_domain($rulehash{'domain'});
101: if ($rulehash{'type'} eq 'course') {
102: $rulehash{'course'} =
103: &LONCAPA::clean_courseid($rulehash{'course'});
104: } else {
105: $rulehash{'course'} =
106: &LONCAPA::clean_username($rulehash{'course'});
107: }
108: $rulehash{'section'}=~s/\W//g;
109: if (!$rulehash{'domain'}) {
110: $rulehash{'domain'}=$env{'user.domain'};
111: }
112: my $realm='';
113: my $separator = ($rulehash{'type'} eq 'course') ? '_' : '/';
114: if ($number) {
115: $realm=$rulehash{'domain'};
116: if ($rulehash{'course'}) {
117: $realm.=$separator.$rulehash{'course'};
118: }
119: if ($rulehash{'section'}) {
120: $realm.=$separator.$rulehash{'section'};
121: }
122: }
123: $newrules[$number]=$rulehash{'effect'}.':'.
124: $realm.':'.$rulehash{'role'}.':'.$rulehash{'type'};
125: }
126: # edit actions?
127: foreach my $key (keys(%env)) {
128: next if ($key!~/^form\.action\_(\d+)$/);
129: my $number=$1;
130: if ($env{$key} eq 'delete') { splice(@newrules,$number,1); }
131: if (($env{$key} eq 'moveup') && ($number>1)) {
132: @newrules[$number-1,$number] = @newrules[$number,$number-1];
133: }
134: if (($env{$key} eq 'movedown') && ($number<$#newrules)) {
135: @newrules[$number+1,$number] = @newrules[$number,$number+1];
136: }
137: if ($env{$key} eq 'insertabove') {
138: splice(@newrules,$number,0,'deny');
139: }
140: if ($env{$key} eq 'insertbelow') {
141: splice(@newrules,$number+1,0,'deny');
142: }
143: }
144:
145: # store file
146: my $fh=Apache::File->new('>'.$fn);
147: foreach (my $i=0;$i<=$#newrules;$i++) {
148: if ($newrules[$i]) {
149: my ($effect,$realm,$role,$type)=split(/\:/,$newrules[$i]);
150: print $fh
151: "<accessrule effect='$effect' realm='$realm' role='$role' type='$type' />\n";
152: }
153: }
154: $fh->close;
155: }
156: # ============================================================ Read and display
157: unless ($constructmode) {
158: # =========================================== This is not in construction space
159: $contents=&Apache::lonnet::getfile($fn);
160: if ($contents==-1) { $contents=''; }
161: } else {
162: # =============================================== This is in construction space
163: if (-e $fn) {
164: my $fh=Apache::File->new($fn);
165: $contents=join('',<$fh>);
166: $fh->close();
167: }
168: $r->print('<form name="rules" method="post">');
169: }
170: unless ($contents=~/\<accessrule/s) {
171: $contents='<accessrule effect="deny" />';
172: }
173: my $parser=HTML::LCParser->new(\$contents);
174: my $token;
175: my $rulecounter=0;
176: my $colzero=&mt($constructmode?'Edit action':'Rule');
177: my %lt=&Apache::lonlocal::texthash(
178: 'ef' => 'Effect',
179: 'ty' => 'Type',
180: 'do' => 'Domain',
181: 'co' => 'Course / User',
182: 'se' => 'Section',
183: 'ro' => 'Role');
184: # ---------------------------------------------------------- Start table output
185: $r->print(&Apache::loncommon::start_data_table().
186: &Apache::loncommon::start_data_table_header_row().
187: "<th>$colzero</th><th>$lt{'ef'}</th><th>$lt{'ty'}</th><th>$lt{'do'}</th>".
188: "<th>$lt{'co'}</th><th>$lt{'se'}</th><th>$lt{'ro'}</th>".
189: &Apache::loncommon::end_data_table_header_row());
190: # --------------------------------------------------------------------- Default
191: # Fast forward to first rule
192: $token=$parser->get_token;
193: while ($token->[1] ne 'accessrule') { $token=$parser->get_token; }
194: # print default
195: $r->print(&Apache::loncommon::start_data_table_row().'<td align="right">');
196: if ($constructmode) {
197: $r->print(&Apache::loncommon::select_form('','action_0',
198: ('' => '',
199: 'insertbelow' => 'Insert rule below')));
200:
201: } else {
202: $r->print(' ');
203: }
204: $r->print('</td><td>');
205: if ($constructmode) {
206: $r->print(&Apache::loncommon::select_form
207: ($token->[2]->{'effect'},'effect_0',
208: ('allow' => 'allow',
209: 'deny' => 'deny')));
210: } else {
211: $r->print($token->[2]->{'effect'});
212: }
213: $r->print('</td><td colspan="5">'.&mt('Default'));
214: if (($token->[2]->{'realm'}) || ($token->[2]->{'role'})) {
215: $r->print(' - <span class="LC_error">'.&mt('Error! No default set.').
216: '</span>');
217: }
218: $r->print('</td>'.&Apache::loncommon::end_data_table_row());
219: # Additional roles
220: while ($token=$parser->get_token) {
221: if (($token->[0] eq 'S') && ($token->[1] eq 'accessrule')) {
222: $rulecounter++;
223: $r->print(&Apache::loncommon::start_data_table_row().
224: '<td align="right" rowspan="2">');
225: # insert, delete, etc
226: $r->print('<span class="LC_nobreak">'.$rulecounter.'. ');
227: if ($constructmode) {
228: $r->print(&Apache::loncommon::select_form(
229: '','action_'.$rulecounter,
230: ('' => '',
231: 'delete' => 'Delete this rule',
232: 'insertabove' => 'Insert rule above',
233: 'insertbelow' => 'Insert rule below',
234: 'moveup' => 'Move rule up',
235: 'movedown' => 'Move rule down')));
236: }
237: $r->print('</span></td>'.
238: '<td rowspan="2">');
239: # effect
240: if ($constructmode) {
241: $r->print(&Apache::loncommon::select_form
242: ($token->[2]->{'effect'},
243: 'effect_'.$rulecounter,
244: ('allow' => 'allow',
245: 'deny' => 'deny')));
246: } else {
247: $r->print($token->[2]->{'effect'});
248: }
249:
250: # type
251: $r->print('</td><td rowspan="2">');
252: my $type = ($token->[2]{'type'} || 'course');
253: if ($constructmode) {
254: $r->print(&Apache::loncommon::select_form($type,
255: 'type_'.$rulecounter,
256: ('course' => 'Course',
257: 'user' => 'User')));
258: } else {
259: $r->print($type);
260: }
261:
262: # ---- realm
263: my $realm=$token->[2]->{'realm'};
264: my ($rdom,$rcourse,$rsec);
265: if ($type eq 'course') {
266: ($rdom,$rcourse,$rsec) = split(m{[/_]},$realm,3);
267: $rcourse = &LONCAPA::clean_courseid($rcourse);
268: } else {
269: ($rdom,$rcourse,$rsec) = split(m{/},$realm,3);
270: $rcourse = &LONCAPA::clean_username($rcourse);
271: }
272: $r->print('</td><td>');
273: # realm domain
274: if ($constructmode) {
275: unless ($rdom) { $rdom=$env{'user.domain'}; }
276: $r->print(&Apache::loncommon::select_dom_form($rdom,
277: 'domain_'.$rulecounter));
278: } else {
279: $r->print($rdom);
280: }
281: $r->print('</td><td>');
282: # realm course
283: if ($constructmode) {
284: $r->print('<input type="text" size="25" name="course_'.
285: $rulecounter.'" value="'.$rcourse.'" />');
286: } else {
287: $r->print($rcourse);
288: }
289:
290: $r->print('</td><td rowspan="2">');
291: # realm section
292: if ($type eq 'course') {
293: if ($constructmode) {
294: $r->print('<input type="text" size="5" name="section_'.
295: $rulecounter.'" value="'.$rsec.'" />');
296: } else {
297: $r->print($rsec);
298: }
299: }
300:
301: $r->print('</td><td rowspan="2">');
302: # role
303: if ($type eq 'course') {
304: if ($constructmode) {
305: my %hash=('' => '');
306: foreach ('au','cc','in','ta','st') {
307: $hash{$_}=&Apache::lonnet::plaintext($_);
308: }
309: my $role=$token->[2]->{'role'};
310: unless ($role) { $role=''; }
311: $r->print(&Apache::loncommon::select_form(
312: $role,'role_'.$rulecounter,%hash));
313: } else {
314: $r->print(&Apache::lonnet::plaintext($token->[2]->{'role'}));
315: }
316: }
317: # course selection link
318: $r->print('</td>'.
319: &Apache::loncommon::end_data_table_row().
320: &Apache::loncommon::continue_data_table_row().
321: '<td colspan="2" align="right">');
322: if ($type eq 'course') {
323: if ($rcourse) {
324: my %descript=
325: &Apache::lonnet::coursedescription($rdom.'_'.$rcourse,
326: {'one_time' => 1});
327: $r->print($descript{'description'}.' ');
328: }
329: if ($constructmode) {
330: $r->print(&Apache::loncommon::selectcourse_link('rules',
331: 'course_'.$rulecounter,'domain_'.$rulecounter));
332: }
333: } else {
334: if ($rcourse) {
335: my $name = &Apache::loncommon::plainname($rcourse,$rdom);
336: $r->print($name.' ');
337: }
338: if ($constructmode) {
339: $r->print(&Apache::loncommon::selectstudent_link('rules','course_'.$rulecounter,'domain_'.$rulecounter));
340: }
341: }
342: # close row
343: $r->print('</td>'.&Apache::loncommon::end_data_table_row());
344: }
345: }
346: $r->print(&Apache::loncommon::end_data_table());
347: # ------------------------------------------------------------ End table output
348: if ($constructmode) {
349: $r->print('<input type="submit" name="store" value="'.&mt('Save').'" /></form>');
350: }
351: $r->print(&Apache::loncommon::end_page());
352: return OK;
353: }
354:
355:
356: 1;
357: __END__
358:
359:
360:
361:
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