1: # The LearningOnline Network with CAPA
2: # Handler to show and edit custom distribution rights
3: #
4: # $Id: lonrights.pm,v 1.6 2003/03/20 21:47:57 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: #
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:
40: sub handler {
41:
42: my $r=shift;
43: $r->content_type('text/html');
44: $r->send_http_header;
45:
46: $r->print(
47: '<html><head><title>LON-CAPA Custom Distribution Rights</title></head>');
48:
49: $r->print(&Apache::loncommon::bodytag('Custom Distribution Rights'));
50: $r->rflush();
51:
52: my $uri=$r->uri;
53: my $fn=&Apache::lonnet::filelocation('',$uri);
54: my $contents='';
55: my $constructmode=($uri=~/^\/\~/);
56:
57: # ============================================================ Modify and store
58: if ($constructmode) {
59: if ($ENV{'form.store'}) {
60: my @newrules=();
61: undef @newrules;
62: # read rules from form
63: foreach (keys %ENV) {
64: if ($_=~/^form\.effect\_(\d+)$/) {
65: my $number=$1;
66: my %rulehash=();
67: foreach ('effect','domain','course','section','role') {
68: $rulehash{$_}=$ENV{'form.'.$_.'_'.$number};
69: }
70: if ($rulehash{'role'} eq 'au') {
71: $rulehash{'course'}='';
72: $rulehash{'section'}='';
73: }
74: if ($rulehash{'role'} eq 'cc') {
75: $rulehash{'section'}='';
76: }
77: unless (($rulehash{'effect'} eq 'deny') ||
78: ($rulehash{'effect'} eq 'allow')) {
79: $rulehash{'effect'}='deny';
80: }
81: $rulehash{'domain'}=~s/\W//g;
82: $rulehash{'course'}=~s/\W//g;
83: $rulehash{'section'}=~s/\W//g;
84: unless ($rulehash{'domain'}) {
85: $rulehash{'domain'}=$ENV{'user.domain'};
86: }
87: my $realm='';
88: if ($number) {
89: $realm=$rulehash{'domain'};
90: if ($rulehash{'course'}) {
91: $realm.='_'.$rulehash{'course'};
92: }
93: if ($rulehash{'section'}) {
94: $realm.='_'.$rulehash{'section'};
95: }
96: }
97: $newrules[$number]=$rulehash{'effect'}.':'.
98: $realm.':'.$rulehash{'role'};
99: }
100: }
101: # edit actions?
102: foreach (keys %ENV) {
103: if ($_=~/^form\.action\_(\d+)$/) {
104: my $number=$1;
105: if ($ENV{$_} eq 'delete') { $newrules[$number]=''; }
106: if (($ENV{$_} eq 'moveup') && ($number>2)) {
107: my $buffer=$newrules[$number];
108: $newrules[$number]=$newrules[$number-1];
109: $newrules[$number-1]=$buffer;
110: }
111: if (($ENV{$_} eq 'movedown') && ($number<$#newrules)) {
112: my $buffer=$newrules[$number];
113: $newrules[$number]=$newrules[$number+1];
114: $newrules[$number+1]=$buffer;
115: }
116: if ($ENV{$_} eq 'insertabove') {
117: for (my $i=$#newrules;$i>=$number;$i--) {
118: $newrules[$i+1]=$newrules[$i];
119: }
120: $newrules[$number]='deny';
121: }
122: if ($ENV{$_} eq 'insertbelow') {
123: for (my $i=$#newrules;$i>$number;$i--) {
124: $newrules[$i+1]=$newrules[$i];
125: }
126: $newrules[$number+1]='deny';
127: }
128: }
129: }
130:
131: # store file
132: my $fh=Apache::File->new('>'.$fn);
133: foreach (my $i=0;$i<=$#newrules;$i++) {
134: if ($newrules[$i]) {
135: my ($effect,$realm,$role)=split(/\:/,$newrules[$i]);
136: print $fh
137: "<accessrule effect='$effect' realm='$realm' role='$role' />\n";
138: }
139: }
140: $fh->close;
141: }
142: }
143: # ============================================================ Read and display
144: unless ($constructmode) {
145: # =========================================== This is not in construction space
146: $contents=&Apache::lonnet::getfile($fn);
147: if ($contents==-1) { $contents=''; }
148: } else {
149: # =============================================== This is in construction space
150: if (-e $fn) {
151: my $fh=Apache::File->new($fn);
152: $contents=join('',<$fh>);
153: $fh->close();
154: }
155: $r->print('<form method="post">');
156: }
157: unless ($contents=~/\<accessrule/s) {
158: $contents='<accessrule effect="deny" />';
159: }
160: my $parser=HTML::LCParser->new(\$contents);
161: my $token;
162: my $rulecounter=0;
163: my $colzero=($constructmode?'Edit action':'Rule');
164: # ---------------------------------------------------------- Start table output
165: $r->print(<<ENDSTARTTABLE);
166: <table border="2">
167: <tr><th>$colzero</th><th>Effect</th><th>Domain</th><th>Course</th>
168: <th>Section</th><th>Role</th></tr>
169: ENDSTARTTABLE
170: # --------------------------------------------------------------------- Default
171: # Fast forward to first rule
172: $token=$parser->get_token;
173: while ($token->[1] ne 'accessrule') { $token=$parser->get_token; }
174: # print default
175: $r->print('<tr><td>');
176: if ($constructmode) {
177: $r->print(&Apache::loncommon::select_form('','action_0',
178: ('' => '',
179: 'insertbelow' => 'Insert rule below')));
180:
181: } else {
182: $r->print(' ');
183: }
184: $r->print('</td><td>');
185: if ($constructmode) {
186: $r->print(&Apache::loncommon::select_form
187: ($token->[2]->{'effect'},'effect_0',
188: ('allow' => 'allow',
189: 'deny' => 'deny')));
190: } else {
191: $r->print($token->[2]->{'effect'});
192: }
193: $r->print('</td><td colspan="4">Default');
194: if (($token->[2]->{'realm'}) || ($token->[2]->{'role'})) {
195: $r->print(' - <font color="red">Error! No default set.</font>');
196: }
197: $r->print('</td></tr>');
198: # Additional roles
199: while ($token=$parser->get_token) {
200: if (($token->[0] eq 'S') && ($token->[1] eq 'accessrule')) {
201: $rulecounter++;
202: $r->print('<tr><td>');
203: # insert, delete, etc
204: $r->print($rulecounter.'. ');
205: if ($constructmode) {
206: $r->print(&Apache::loncommon::select_form(
207: '','action_'.$rulecounter,
208: ('' => '',
209: 'delete' => 'Delete this rule',
210: 'insertabove' => 'Insert rule above',
211: 'insertbelow' => 'Insert rule below',
212: 'moveup' => 'Move rule up',
213: 'movedown' => 'Move rule down')));
214: }
215: $r->print('</td><td>');
216: # effect
217: if ($constructmode) {
218: $r->print(&Apache::loncommon::select_form
219: ($token->[2]->{'effect'},
220: 'effect_'.$rulecounter,
221: ('allow' => 'allow',
222: 'deny' => 'deny')));
223: } else {
224: $r->print($token->[2]->{'effect'});
225: }
226: $r->print('</td><td>');
227: # ---- realm
228: my $realm=$token->[2]->{'realm'};
229: $realm=~s/^\W//;
230: my ($rdom,$rcourse,$rsec)=split(/[\/\_]/,$realm);
231: # realm role
232: if ($constructmode) {
233: $r->print(&Apache::loncommon::select_dom_form($rdom,
234: 'domain_'.$rulecounter));
235: } else {
236: $r->print($rdom);
237: }
238: $r->print('</td><td>');
239: # realm course
240: if ($constructmode) {
241: $r->print('<input input type="text" size="25" name="course_'.
242: $rulecounter.'" value="'.$rcourse.'" />');
243: } else {
244: $r->print($rcourse);
245: }
246:
247: $r->print('</td><td>');
248: # realm section
249: if ($constructmode) {
250: $r->print('<input input type="text" size="5" name="section_'.
251: $rulecounter.'" value="'.$rsec.'" />');
252: } else {
253: $r->print($rsec);
254: }
255:
256: $r->print('</td><td>');
257: # role
258: if ($constructmode) {
259: my %hash=('' => '');
260: foreach ('au','cc','in','ta','st') {
261: $hash{$_}=&Apache::lonnet::plaintext($_);
262: }
263: my $role=$token->[2]->{'role'};
264: unless ($role) { $role=''; }
265: $r->print(&Apache::loncommon::select_form(
266: $role,'role_'.$rulecounter,%hash));
267: } else {
268: $r->print(&Apache::lonnet::plaintext($token->[2]->{'role'}));
269: }
270: # close row
271: $r->print('</td></tr>');
272: }
273: }
274: $r->print('</table>');
275: # ------------------------------------------------------------ End table output
276: if ($constructmode) {
277: $r->print('<input type="submit" name="store" value="Store" /></form>');
278: }
279: $r->print('</body></html>');
280: return OK;
281: }
282:
283:
284: 1;
285: __END__
286:
287:
288:
289:
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