1: # The LearningOnline Network with CAPA
2: # User Roles Screen
3: #
4: # $Id: lonroles.pm,v 1.38 2002/05/21 13:07:40 stredwic 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: # (Directory Indexer
29: # (Login Screen
30: # YEAR=1999
31: # 5/21/99,5/22,5/25,5/26,5/31,6/2,6/10,7/12,7/14 Gerd Kortemeyer)
32: # 11/23 Gerd Kortemeyer)
33: # YEAR=2000
34: # 1/14,03/06,06/01,07/22,07/24,07/25,
35: # 09/04,09/06,09/28,09/29,09/30,10/2,10/5,10/26,10/28,
36: # 12/08,12/28,
37: # YEAR=2001
38: # 01/15/01 Gerd Kortemeyer
39: # 02/27/01 Scott Harrison
40: # 03/02,05/03,05/25,05/30,06/01,07/06,08/06 Gerd Kortemeyer
41: # 12/21 Scott Harrison
42: # 12/29 Gerd Kortemeyer
43: #
44: ###
45:
46: package Apache::lonroles;
47:
48: use strict;
49: use Apache::lonnet();
50: use Apache::lonuserstate();
51: use Apache::Constants qw(:common);
52: use Apache::File();
53: use Apache::lonmenu;
54: use Apache::loncommon;
55:
56: sub handler {
57:
58: my $r = shift;
59:
60: my $now=time;
61: my $then=$ENV{'user.login.time'};
62: my $envkey;
63:
64:
65: # ================================================================== Roles Init
66:
67: if ($ENV{'form.selectrole'}) {
68: if ($ENV{'request.course.id'}) {
69: my %temp=('logout_'.$ENV{'request.course.id'} => time);
70: &Apache::lonnet::put('email_status',\%temp);
71: }
72: &Apache::lonnet::appenv("request.course.id" => '',
73: "request.course.fn" => '',
74: "request.course.uri" => '',
75: "request.course.sec" => '',
76: "request.role" => 'cm');
77: foreach $envkey (keys %ENV) {
78: if ($envkey=~/^user\.role\./) {
79: my ($dum1,$dum2,$role,@pwhere)=split(/\./,$envkey);
80: my $where=join('.',@pwhere);
81: my $trolecode=$role.'.'.$where;
82: if ($ENV{'form.'.$trolecode}) {
83: my ($tstart,$tend)=split(/\./,$ENV{$envkey});
84: my $tstatus='is';
85: if ($tstart) {
86: if ($tstart>$then) {
87: $tstatus='future';
88: }
89: }
90: if ($tend) {
91: if ($tend<$then) { $tstatus='expired'; }
92: if ($tend<$now) { $tstatus='will_not'; }
93: }
94: if ($tstatus eq 'is') {
95: $where=~s/^\///;
96: my ($cdom,$cnum,$csec)=split(/\//,$where);
97: &Apache::lonnet::appenv('request.role' => $trolecode,
98: 'request.course.sec' => $csec);
99: my $msg='Entering course ...';
100: if (($cnum) && ($role ne 'ca')) {
101: my ($furl,$ferr)=
102: &Apache::lonuserstate::readmap($cdom.'/'.$cnum);
103: if (($ENV{'form.orgurl'}) &&
104: ($ENV{'form.orgurl'}!~/^\/adm\/flip/)) {
105: $r->internal_redirect($ENV{'form.orgurl'});
106: return OK;
107: } else {
108: unless ($ENV{'request.course.id'}) {
109: &Apache::lonnet::appenv(
110: "request.course.id" => $cdom.'_'.$cnum);
111: $furl='/adm/notfound.html';
112: $msg=
113: '<h1><font color=red>Could not initialize top-level map.</font></h1>';
114: }
115: $r->content_type('text/html');
116: &Apache::loncommon::no_cache($r);
117: $r->send_http_header;
118: my $swinfo=&Apache::lonmenu::rawconfig($r);
119: print (<<ENDREDIR);
120: <head><title>Entering Course</title>
121: <meta HTTP-EQUIV="Refresh" CONTENT="1; url=$furl">
122: </head>
123: <html>
124: <body bgcolor="#FFFFFF">
125: <script>
126: $swinfo
127: </script>
128: $msg
129: </body>
130: </html>
131: ENDREDIR
132: return OK;
133: }
134: }
135: }
136: }
137: }
138: }
139: }
140:
141:
142: # =============================================================== No Roles Init
143:
144: $r->content_type('text/html');
145: &Apache::loncommon::no_cache($r);
146: $r->send_http_header;
147: return OK if $r->header_only;
148:
149: my $swinfo=&Apache::lonmenu::rawconfig($r);
150: $r->print(<<ENDHEADER);
151: <html>
152: <head>
153: <title>LON-CAPA User Roles</title>
154: </head><body bgcolor="#FFFFFF">
155: <script>
156: $swinfo
157: window.focus();
158: </script>
159: ENDHEADER
160:
161: # ------------------------------------------ Get Error Message from Environment
162:
163: my ($fn,$priv,$nochoose,$error,$msg)=split(/:/,$ENV{'user.error.msg'});
164: if ($ENV{'user.error.msg'}) {
165: $r->log_reason(
166: "$msg for $ENV{'user.name'} domain $ENV{'user.domain'} access $priv",$fn);
167: }
168:
169: # ---------------------------------------------------------------- Who is this?
170:
171: my $advanced=0;
172: foreach $envkey (keys %ENV) {
173: if ($envkey=~/^user\.role\./) {
174: my ($dum1,$dum2,$role,@pwhere)=split(/\./,$envkey);
175: if ($role ne 'st') { $advanced=1; }
176: }
177: }
178:
179: # -------------------------------------------------------- Generate Page Output
180: # --------------------------------------------------------------- Error Header?
181: if ($error) {
182: $r->print("<h1>LON-CAPA Access Control</h1>");
183: $r->print("<hr><pre>Access : ".
184: Apache::lonnet::plaintext($priv)."\n");
185: $r->print("Resource: $fn\n");
186: $r->print("Action : $msg\n</pre><hr>");
187: } else {
188: $r->print("<h1>LON-CAPA User Roles</h1>");
189: if ($ENV{'user.error.msg'}) {
190: $r->print(
191: '<h3><font color=red>You need to choose another user role or '.
192: 'enter a specific course for this function</font></h3>');
193: }
194: }
195: # -------------------------------------------------------- Choice or no choice?
196: if ($nochoose) {
197: if ($advanced) {
198: $r->print("<h2>Assigned User Roles</h2>\n");
199: } else {
200: $r->print("<h2>Sorry ...</h2>\nThis resource might be part of");
201: if ($ENV{'request.course.id'}) {
202: $r->print(' another');
203: } else {
204: $r->print(' a certain');
205: }
206: $r->print(' course.</body></html>');
207: return OK;
208: }
209: } else {
210: if ($advanced) {
211: $r->print
212: ("<h2>$ENV{'user.name'}, Please Select a Role</h2>\n");
213: $r->print("Your home server is ".
214: $Apache::lonnet::hostname{&Apache::lonnet::homeserver
215: ($ENV{'user.name'},$ENV{'user.domain'}, 'true')}.
216: "<br />\n");
217: $r->print("Author and Co-Author roles may not be available on ".
218: "servers other than your home server.");
219: } else {
220: $r->print("<h2>Enter a Course</h2>\n");
221: }
222: if (($ENV{'REDIRECT_QUERY_STRING'}) && ($fn)) {
223: $fn.='?'.$ENV{'REDIRECT_QUERY_STRING'};
224: }
225: $r->print('<form method=post action="'.(($fn)?$fn:$r->uri).'">');
226: $r->print('<input type=hidden name=orgurl value="'.$fn.'">');
227: $r->print('<input type=hidden name=selectrole value=1>');
228: }
229: $r->print('<br>Show all roles: <input type=checkbox name=showall');
230: if ($ENV{'form.showall'}) { $r->print(' checked'); }
231: $r->print('><input type=submit value="Display"><br>');
232: # ----------------------------------------------------------------------- Table
233: $r->print('<table><tr>');
234: unless ($nochoose) { $r->print('<th> </th>'); }
235: $r->print('<th>User Role</th><th colspan=2>Extent</th>'.
236: '<th>Start</th><th>End</th><th>Remark</th></tr>'."\n");
237:
238: foreach $envkey (sort keys %ENV) {
239: my $button = 1;
240: if ($envkey=~/^user\.role\./) {
241: my ($dum1,$dum2,$role,@pwhere)=split(/\./,$envkey);
242: my $where=join('.',@pwhere);
243: my $trolecode=$role.'.'.$where;
244: my ($tstart,$tend)=split(/\./,$ENV{$envkey});
245: my $tremark='';
246: my $tstatus='is';
247: my $tpstart=' ';
248: my $tpend=' ';
249: if ($tstart) {
250: if ($tstart>$then) {
251: $tstatus='future';
252: if ($tstart<$now) { $tstatus='will'; }
253: }
254: $tpstart=localtime($tstart);
255: }
256: if ($tend) {
257: if ($tend<$then) {
258: $tstatus='expired';
259: } elsif ($tend<$now) {
260: $tstatus='will_not';
261: }
262: $tpend=localtime($tend);
263: }
264: if ($ENV{'request.role'} eq $trolecode) {
265: $tstatus='selected';
266: }
267: my $tbg;
268: if (($tstatus eq 'is') || ($tstatus eq 'selected') ||
269: ($ENV{'form.showall'})) {
270: if ($tstatus eq 'is') {
271: $tbg='#77FF77';
272: } elsif ($tstatus eq 'future') {
273: $tbg='#FFFF77';
274: } elsif ($tstatus eq 'will') {
275: $tbg='#FFAA77';
276: $tremark.='Active at next login. ';
277: } elsif ($tstatus eq 'expired') {
278: $tbg='#FF7777';
279: } elsif ($tstatus eq 'will_not') {
280: $tbg='#AAFF77';
281: $tremark.='Expired after logout. ';
282: } elsif ($tstatus eq 'selected') {
283: $tbg='#11CC55';
284: $tremark.='Currently selected. ';
285: }
286: my $trole;
287: if ($role =~ /^cr\//) {
288: my ($rdummy,$rdomain,$rauthor,$rrole)=split(/\//,$role);
289: $tremark.='<br>Defined by '.$rauthor.' at '.$rdomain.'.';
290: $trole=$rrole;
291: } else {
292: $trole=Apache::lonnet::plaintext($role);
293: }
294: my $ttype;
295: my $twhere;
296: my ($tdom,$trest,$tsection)=
297: split(/\//,Apache::lonnet::declutter($where));
298: # First, Co-Authorship roles
299: if ($role eq 'ca') {
300: my $home = &Apache::lonnet::homeserver($trest,$tdom,
301: 'true');
302: $button = 0 if ($home ne $r->dir_config('lonHostID'));
303: #next if ($home eq 'no_host');
304: $home = $Apache::lonnet::hostname{$home};
305: $ttype='Construction Space';
306: $twhere='User: '.$trest.'<br />Domain: '.$tdom.'<br />'.
307: ' Server: '.$home;
308: $ENV{'course.'.$tdom.'_'.$trest.'.description'}='ca';
309: } elsif ($role eq 'au') {
310: # Authors
311: my $home = &Apache::lonnet::homeserver
312: ($ENV{'user.name'},$ENV{'user.domain'}, 'true');
313: $button = 0 if ($home ne $r->dir_config('lonHostID'));
314: #next if ($home eq 'no_host');
315: $home = $Apache::lonnet::hostname{$home};
316: $ttype='Construction Space';
317: $twhere='Domain: '.$tdom.'<br />Server: '.$home;
318: $ENV{'course.'.$tdom.'_'.$trest.'.description'}='ca';
319: } elsif ($trest) {
320: $ttype='Course';
321: if ($tsection) {
322: $ttype.='<br>Section/Group: '.$tsection;
323: }
324: my $tcourseid=$tdom.'_'.$trest;
325: if ($ENV{'course.'.$tcourseid.'.description'}) {
326: $twhere=$ENV{'course.'.$tcourseid.'.description'};
327: } else {
328: my %newhash=Apache::lonnet::coursedescription
329: ($tcourseid);
330: if (%newhash) {
331: $twhere=$newhash{'description'};
332: } else {
333: $twhere='Currently not available';
334: $ENV{'course.'.$tcourseid.'.description'}=$twhere;
335: }
336: }
337: if ($role ne 'st') { $twhere.="<br />Domain:".$tdom; }
338: } elsif ($tdom) {
339: $ttype='Domain';
340: $twhere=$tdom;
341: } else {
342: $ttype='System';
343: $twhere='system wide';
344: }
345:
346: # ----- do not trust the indention below here -----
347: $r->print('<tr bgcolor='.$tbg.'>');
348: unless ($nochoose) {
349: if (!$button) {
350: $r->print('<td> </td>');
351: } elsif ($tstatus eq 'is') {
352: $r->print('<td><input type=submit value=Select name="'.
353: $trolecode.'"></td>');
354: } elsif ($ENV{'user.adv'}) {
355: $r->print
356: ('<td><input type=submit value="Re-Initialize"'.
357: ' name="'.$trolecode.'"></td>');
358: } else {
359: $r->print('<td> </td>');
360: }
361: }
362: $r->print('<td>'.$trole.'</td><td>'.
363: $ttype.'</td><td>'.$twhere.'</td><td>'.$tpstart.
364: '</td><td>'.$tpend.
365: '</td><td>'.$tremark.' </td></tr>'."\n");
366: }
367: }
368: }
369: my $tremark='';
370: if ($ENV{'request.role'} eq 'cm') {
371: $r->print('<tr bgcolor="#11CC55">');
372: $tremark='Currently selected.';
373: } else {
374: $r->print('<tr bgcolor="#77FF77">');
375: }
376: unless ($nochoose) {
377: if ($ENV{'request.role'} ne 'cm') {
378: $r->print('<td><input type=submit value=Select name="cm"></td>');
379: } else {
380: $r->print('<td> </td>');
381: }
382: }
383: $r->print('<td colspan=5>No role specified'.
384: '</td><td>'.$tremark.' </td></tr>'."\n");
385:
386: $r->print('</table>');
387: unless ($nochoose) {
388: $r->print("</form>\n");
389: }
390: # ------------------------------------------------------------ Privileges Info
391: if ($advanced) {
392: $r->print('<hr><h2>Current Privileges</h2>');
393:
394: foreach $envkey (sort keys %ENV) {
395: if ($envkey=~/^user\.priv\.$ENV{'request.role'}\./) {
396: my $where=$envkey;
397: $where=~s/^user\.priv\.$ENV{'request.role'}\.//;
398: my $ttype;
399: my $twhere;
400: my ($tdom,$trest,$tsec)=
401: split(/\//,Apache::lonnet::declutter($where));
402: if ($trest) {
403: if ($ENV{'course.'.$tdom.'_'.$trest.'.description'} eq 'ca') {
404: $ttype='Construction Space';
405: $twhere='User: '.$trest.', Domain: '.$tdom;
406: } else {
407: $ttype='Course';
408: $twhere=$ENV{'course.'.$tdom.'_'.$trest.'.description'};
409: if ($tsec) {
410: $twhere.=' (Section/Group: '.$tsec.')';
411: }
412: }
413: } elsif ($tdom) {
414: $ttype='Domain';
415: $twhere=$tdom;
416: } else {
417: $ttype='System';
418: $twhere='/';
419: }
420: $r->print("\n<h3>".$ttype.': '.$twhere.'</h3><ul>');
421: foreach (sort split(/:/,$ENV{$envkey})) {
422: if ($_) {
423: my ($prv,$restr)=split(/\&/,$_);
424: my $trestr='';
425: if ($restr ne 'F') {
426: my $i;
427: $trestr.=' (';
428: for ($i=0;$i<length($restr);$i++) {
429: $trestr.=
430: Apache::lonnet::plaintext(substr($restr,$i,1));
431: if ($i<length($restr)-1) { $trestr.=', '; }
432: }
433: $trestr.=')';
434: }
435: $r->print('<li>'.Apache::lonnet::plaintext($prv).$trestr.
436: '</li>');
437: }
438: }
439: $r->print('</ul>');
440: }
441: }
442: }
443:
444: $r->print("</body></html>\n");
445: return OK;
446: }
447:
448: 1;
449: __END__
450:
451: =head1 NAME
452:
453: Apache::lonroles - User Roles Screen
454:
455: =head1 SYNOPSIS
456:
457: Invoked by /etc/httpd/conf/srm.conf:
458:
459: <Location /adm/roles>
460: PerlAccessHandler Apache::lonacc
461: SetHandler perl-script
462: PerlHandler Apache::lonroles
463: ErrorDocument 403 /adm/login
464: ErrorDocument 500 /adm/errorhandler
465: </Location>
466:
467: =head1 INTRODUCTION
468:
469: This module enables a user to select what role he wishes to
470: operate under (instructor, student, teaching assistant, course
471: coordinator, etc). These roles are pre-established by the actions
472: of upper-level users.
473:
474: This is part of the LearningOnline Network with CAPA project
475: described at http://www.lon-capa.org.
476:
477: =head1 HANDLER SUBROUTINE
478:
479: This routine is called by Apache and mod_perl.
480:
481: =over 4
482:
483: =item *
484:
485: Roles Initialization (yes/no)
486:
487: =item *
488:
489: Get Error Message from Environment
490:
491: =item *
492:
493: Who is this?
494:
495: =item *
496:
497: Generate Page Output
498:
499: =item *
500:
501: Choice or no choice
502:
503: =item *
504:
505: Table
506:
507: =item *
508:
509: Privileges
510:
511: =back
512:
513: =cut
FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>
![[BACK]](/icons/back.gif){kind=icon}
Return to lonroles.pm CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [LON-CAPA] / loncom / auth