1: # The LearningOnline Network with CAPA
2: # User Roles Screen
3: #
4: # $Id: lonroles.pm,v 1.90 2004/05/08 16:26:32 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: package Apache::lonroles;
31:
32: use strict;
33: use Apache::lonnet();
34: use Apache::lonuserstate();
35: use Apache::Constants qw(:common);
36: use Apache::File();
37: use Apache::lonmenu;
38: use Apache::loncommon;
39: use Apache::lonannounce;
40: use Apache::lonlocal;
41:
42: sub redirect_user {
43: my ($r,$title,$url,$msg) = @_;
44: $msg = $title if (! defined($msg));
45: &Apache::loncommon::content_type($r,'text/html');
46: &Apache::loncommon::no_cache($r);
47: $r->send_http_header;
48: my $swinfo=&Apache::lonmenu::rawconfig();
49: my $bodytag=&Apache::loncommon::bodytag('Switching Role');
50: $r->print (<<ENDREDIR);
51: <head><title>$title</title>
52: <meta HTTP-EQUIV="Refresh" CONTENT="1; url=$url">
53: </head>
54: <html>
55: $bodytag
56: <script>
57: $swinfo
58: </script>
59: <h1>$msg</h1>
60: </body>
61: </html>
62: ENDREDIR
63: return;
64: }
65:
66: sub handler {
67:
68: my $r = shift;
69:
70: my $now=time;
71: my $then=$ENV{'user.login.time'};
72: my $envkey;
73:
74:
75: # ================================================================== Roles Init
76:
77: if ($ENV{'form.selectrole'}) {
78: if ($ENV{'request.course.id'}) {
79: my %temp=('logout_'.$ENV{'request.course.id'} => time);
80: &Apache::lonnet::put('email_status',\%temp);
81: }
82: &Apache::lonnet::appenv("request.course.id" => '',
83: "request.course.fn" => '',
84: "request.course.uri" => '',
85: "request.course.sec" => '',
86: "request.role" => 'cm',
87: "request.role.adv" => $ENV{'user.adv'},
88: "request.role.domain" => $ENV{'user.domain'});
89: foreach $envkey (keys %ENV) {
90: next if ($envkey!~/^user\.role\./);
91: my (undef,undef,$role,@pwhere)=split(/\./,$envkey);
92: my $where=join('.',@pwhere);
93: my $trolecode=$role.'.'.$where;
94: if ($ENV{'form.'.$trolecode}) {
95: my ($tstart,$tend)=split(/\./,$ENV{$envkey});
96: my $tstatus='is';
97: if ($tstart) {
98: if ($tstart>$then) {
99: $tstatus='future';
100: }
101: }
102: if ($tend) {
103: if ($tend<$then) { $tstatus='expired'; }
104: if ($tend<$now) { $tstatus='will_not'; }
105: }
106: if ($tstatus eq 'is') {
107: $where=~s/^\///;
108: my ($cdom,$cnum,$csec)=split(/\//,$where);
109: # check for keyed access
110: if (($role eq 'st') &&
111: ($ENV{'course.'.$cdom.'_'.$cnum.'.keyaccess'} eq 'yes')) {
112: # who is key authority?
113: my $authdom=$cdom;
114: my $authnum=$cnum;
115: if ($ENV{'course.'.$cdom.'_'.$cnum.'.keyauth'}) {
116: ($authnum,$authdom)=
117: split(/\W/,$ENV{'course.'.$cdom.'_'.$cnum.'.keyauth'});
118: }
119: # check with key authority
120: unless (&Apache::lonnet::validate_access_key(
121: $ENV{'environment.key.'.$cdom.'_'.$cnum},
122: $authdom,$authnum)) {
123: # there is no valid key
124: if ($ENV{'form.newkey'}) {
125: # student attempts to register a new key
126: &Apache::loncommon::content_type($r,'text/html');
127: &Apache::loncommon::no_cache($r);
128: $r->send_http_header;
129: my $swinfo=&Apache::lonmenu::rawconfig();
130: my $bodytag=&Apache::loncommon::bodytag
131: ('Verifying Access Key to Unlock this Course');
132: my $buttontext=&mt('Enter Course');
133: my $message=&mt('Successfully registered key');
134: my $assignresult=
135: &Apache::lonnet::assign_access_key(
136: $ENV{'form.newkey'},
137: $authdom,$authnum,
138: $ENV{'user.domain'},
139: $ENV{'user.name'},
140: 'Assigned from '.$ENV{'REMOTE_ADDR'}.' at '.localtime().' for '.
141: $trolecode);
142: unless ($assignresult eq 'ok') {
143: $assignresult=~s/^error\:\s*//;
144: $message=&mt($assignresult).
145: '<br /><a href="/adm/logout">'.
146: &mt('Logout').'</a>';
147: $buttontext=&mt('Re-Enter Key');
148: }
149: $r->print(<<ENDENTEREDKEY);
150: <head><title>Verifying Course Access Key</title>
151: </head>
152: <html>
153: $bodytag
154: <script>
155: $swinfo
156: </script>
157: <form method="post">
158: <input type="hidden" name="selectrole" value="1" />
159: <input type="hidden" name="$trolecode" value="1" />
160: <font size="+2">$message</font><br />
161: <input type="submit" value="$buttontext" />
162: </form>
163: </body></html>
164: ENDENTEREDKEY
165: return OK;
166: } else {
167: # print form to enter a new key
168: &Apache::loncommon::content_type($r,'text/html');
169: &Apache::loncommon::no_cache($r);
170: $r->send_http_header;
171: my $swinfo=&Apache::lonmenu::rawconfig();
172: my $bodytag=&Apache::loncommon::bodytag
173: ('Enter Access Key to Unlock this Course');
174: $r->print(<<ENDENTERKEY);
175: <head><title>Entering Course Access Key</title>
176: </head>
177: <html>
178: $bodytag
179: <script>
180: $swinfo
181: </script>
182: <form method="post">
183: <input type="hidden" name="selectrole" value="1" />
184: <input type="hidden" name="$trolecode" value="1" />
185: <input type="text" size="20" name="newkey" value="$ENV{'form.newkey'}" />
186: <input type="submit" value="Enter key" />
187: </form>
188: </body></html>
189: ENDENTERKEY
190: return OK;
191: }
192: }
193: }
194: &Apache::lonnet::log($ENV{'user.domain'},
195: $ENV{'user.name'},
196: $ENV{'user.home'},
197: "Role ".$trolecode);
198: my $tadv=0;
199: if (($trolecode!~/^st/) &&
200: ($trolecode!~/^ta/) &&
201: ($trolecode!~/^cm/)) { $tadv=1; }
202: &Apache::lonnet::appenv(
203: 'request.role' => $trolecode,
204: 'request.role.adv' => $tadv,
205: 'request.role.domain' => $cdom,
206: 'request.course.sec' => $csec);
207: my $msg=&mt('Entering course ...');
208:
209: if (($cnum) && ($role ne 'ca')) {
210: my ($furl,$ferr)=
211: &Apache::lonuserstate::readmap($cdom.'/'.$cnum);
212: if (($ENV{'form.orgurl'}) &&
213: ($ENV{'form.orgurl'}!~/^\/adm\/flip/)) {
214: my $dest=$ENV{'form.orgurl'};
215: if ( &Apache::lonnet::mod_perl_version() == 2 ) {
216: &Apache::lonnet::cleanenv();
217: }
218: $r->internal_redirect($dest);
219: return OK;
220: } else {
221: unless ($ENV{'request.course.id'}) {
222: &Apache::lonnet::appenv(
223: "request.course.id" => $cdom.'_'.$cnum);
224: $furl='/adm/roles?tryagain=1';
225: $msg=
226: '<h1><font color=red>'.
227: &mt('Could not initialize course at this time.').
228: '</font></h1><h3>'.&mt('Please try again.').'</h3>'.$ferr;
229: }
230:
231: # Check to see if the user is a CC entering a course
232: # for the first time
233: my (undef, undef, $role, $courseid) = split(/\./, $envkey);
234: if (substr($courseid, 0, 1) eq '/') {
235: $courseid = substr($courseid, 1);
236: }
237: $courseid =~ s/\//_/;
238: if ($role eq 'cc' && $ENV{'course.' . $courseid .
239: '.course.helper.not.run'}) {
240: $furl = "/adm/helper/course.initialization.helper";
241: }
242: #
243: # Send the user to the course they selected
244: &redirect_user($r,&mt('Entering Course'),
245: $furl,$msg);
246: return OK;
247: }
248: }
249: #
250: # Send the user to the construction space they selected
251: if ($role =~ /^(au|ca)$/) {
252: my $redirect_url = '/priv/';
253: if ($role eq 'au') {
254: $redirect_url.=$ENV{'user.name'};
255: } else {
256: $where =~ /\/(.*)$/;
257: $redirect_url .= $1;
258: }
259: $redirect_url .= '/';
260: &redirect_user($r,&mt('Entering Construction Space'),
261: $redirect_url);
262: return OK;
263: }
264: }
265: }
266: }
267: }
268:
269:
270: # =============================================================== No Roles Init
271:
272: &Apache::loncommon::content_type($r,'text/html');
273: &Apache::loncommon::no_cache($r);
274: $r->send_http_header;
275: return OK if $r->header_only;
276:
277: my $swinfo=&Apache::lonmenu::rawconfig();
278: my $bodytag=&Apache::loncommon::bodytag('User Roles');
279: my $helptag='<table><tr><td>'.&Apache::loncommon::help_open_topic
280: ("General_Intro",&mt("Click here for help")).'</td><td>'.
281: &Apache::loncommon::help_open_faq(1,&mt('Click here for FAQ')).'</td><td>'.
282: &Apache::loncommon::help_open_bug('',&mt('Click here to report bugs')).'</td></tr></table>';
283: $r->print(<<ENDHEADER);
284: <html>
285: <head>
286: <title>LON-CAPA User Roles</title>
287: </head>
288: $bodytag
289: $helptag<br />
290: <script>
291: $swinfo
292: window.focus();
293: </script>
294: ENDHEADER
295:
296: # ------------------------------------------ Get Error Message from Environment
297:
298: my ($fn,$priv,$nochoose,$error,$msg)=split(/:/,$ENV{'user.error.msg'});
299: if ($ENV{'user.error.msg'}) {
300: $r->log_reason(
301: "$msg for $ENV{'user.name'} domain $ENV{'user.domain'} access $priv",$fn);
302: }
303:
304: # ------------------------------------------------- Can this user re-init, etc?
305:
306: my $advanced=$ENV{'user.adv'};
307: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},['tryagain']);
308: my $tryagain=$ENV{'form.tryagain'};
309:
310: # -------------------------------------------------------- Generate Page Output
311: # --------------------------------------------------------------- Error Header?
312: if ($error) {
313: $r->print("<h1>LON-CAPA Access Control</h1>");
314: $r->print("<hr><pre>Access : ".
315: Apache::lonnet::plaintext($priv)."\n");
316: $r->print("Resource: $fn\n");
317: $r->print("Action : $msg\n</pre><hr>");
318: } else {
319: if ($ENV{'user.error.msg'}) {
320: $r->print(
321: '<h3><font color=red>'.
322: &mt('You need to choose another user role or enter a specific course for this function').'</font></h3>');
323: }
324: }
325: # -------------------------------------------------------- Choice or no choice?
326: if ($nochoose) {
327: if ($advanced) {
328: $r->print("<h2>".&mt('Assigned User Roles')."</h2>\n");
329: } else {
330: $r->print("<h2>".&mt('Sorry ...')."</h2>\n".
331: &mt('This resource might be part of'));
332: if ($ENV{'request.course.id'}) {
333: $r->print(&mt(' another'));
334: } else {
335: $r->print(&mt(' a certain'));
336: }
337: $r->print(&mt(' course.').'</body></html>');
338: return OK;
339: }
340: } else {
341: if ($advanced) {
342: $r->print(&mt("Your home server is ").
343: $Apache::lonnet::hostname{&Apache::lonnet::homeserver
344: ($ENV{'user.name'},$ENV{'user.domain'})}.
345: "<br />\n");
346: $r->print(&mt(
347: "Author and Co-Author roles may not be available on servers other than your home server."));
348: }
349: if (($ENV{'REDIRECT_QUERY_STRING'}) && ($fn)) {
350: $fn.='?'.$ENV{'REDIRECT_QUERY_STRING'};
351: }
352: $r->print('<form method="post" name="rolechoice" action="'.(($fn)?$fn:$r->uri).'">');
353: $r->print('<input type=hidden name=orgurl value="'.$fn.'">');
354: $r->print('<input type=hidden name=selectrole value=1>');
355: }
356: if ($ENV{'user.adv'}) {
357: $r->print(
358: '<br />'.&mt('Show all roles').': <input type="checkbox" name="showall"');
359: if ($ENV{'form.showall'}) { $r->print(' checked'); }
360: $r->print('><input type=submit value="'.&mt('Display').'">');
361: }
362:
363: my (%roletext,%sortrole,%roleclass);
364: my $countactive=0;
365: my $inrole=0;
366: my $possiblerole='';
367: foreach $envkey (sort keys %ENV) {
368: my $button = 1;
369: my $switchserver='';
370: my $roletext;
371: my $sortkey;
372: if ($envkey=~/^user\.role\./) {
373: my (undef,undef,$role,@pwhere)=split(/\./,$envkey);
374: next if (!defined($role) || $role eq '');
375: my $where=join('.',@pwhere);
376: my $trolecode=$role.'.'.$where;
377: my ($tstart,$tend)=split(/\./,$ENV{$envkey});
378: my $tremark='';
379: my $tstatus='is';
380: my $tpstart=' ';
381: my $tpend=' ';
382: my $tfont='#000000';
383: if ($tstart) {
384: if ($tstart>$then) {
385: $tstatus='future';
386: if ($tstart<$now) { $tstatus='will'; }
387: }
388: $tpstart=&Apache::lonlocal::locallocaltime($tstart);
389: }
390: if ($tend) {
391: if ($tend<$then) {
392: $tstatus='expired';
393: } elsif ($tend<$now) {
394: $tstatus='will_not';
395: }
396: $tpend=&Apache::lonlocal::locallocaltime($tend);
397: }
398: if ($ENV{'request.role'} eq $trolecode) {
399: $tstatus='selected';
400: }
401: my $tbg;
402: if (($tstatus eq 'is') || ($tstatus eq 'selected') ||
403: ($ENV{'form.showall'})) {
404: if ($tstatus eq 'is') {
405: $tbg='#77FF77';
406: $tfont='#003300';
407: $possiblerole=$trolecode;
408: $countactive++;
409: } elsif ($tstatus eq 'future') {
410: $tbg='#FFFF77';
411: $button=0;
412: } elsif ($tstatus eq 'will') {
413: $tbg='#FFAA77';
414: $tremark.=&mt('Active at next login. ');
415: } elsif ($tstatus eq 'expired') {
416: $tbg='#FF7777';
417: $tfont='#330000';
418: $button=0;
419: } elsif ($tstatus eq 'will_not') {
420: $tbg='#AAFF77';
421: $tremark.=&mt('Expired after logout. ');
422: } elsif ($tstatus eq 'selected') {
423: $tbg='#11CC55';
424: $tfont='#002200';
425: $inrole=1;
426: $countactive++;
427: $tremark.=&mt('Currently selected. ');
428: }
429: my $trole;
430: if ($role =~ /^cr\//) {
431: my ($rdummy,$rdomain,$rauthor,$rrole)=split(/\//,$role);
432: $tremark.='<br>'.&mt('Defined by ').$rauthor.
433: &mt(' at ').$rdomain.'.';
434: $trole=$rrole;
435: } else {
436: $trole=Apache::lonnet::plaintext($role);
437: }
438: my $ttype;
439: my $twhere;
440: my ($tdom,$trest,$tsection)=
441: split(/\//,Apache::lonnet::declutter($where));
442: # First, Co-Authorship roles
443: if ($role eq 'ca') {
444: my $home = &Apache::lonnet::homeserver($trest,$tdom);
445: my $allowed=0;
446: my @ids=&Apache::lonnet::current_machine_ids();
447: foreach my $id (@ids) { if ($id eq $home) { $allowed=1; } }
448: if (!$allowed) {
449: $button=0;
450: $switchserver=&Apache::lonnet::escape('http://'.
451: $Apache::lonnet::hostname{$home}.
452: '/adm/login?domain='.$ENV{'user.domain'}.
453: '&username='.$ENV{'user.name'}.
454: '&firsturl=/priv/'.$trest);
455: }
456: #next if ($home eq 'no_host');
457: $home = $Apache::lonnet::hostname{$home};
458: $ttype='Construction Space';
459: $twhere=&mt('User').': '.$trest.'<br />'.&mt('Domain').
460: ': '.$tdom.'<br />'.
461: ' '.&mt('Server').': '.$home;
462: $ENV{'course.'.$tdom.'_'.$trest.'.description'}='ca';
463: $tremark.=&Apache::lonhtmlcommon::authorbombs('/res/'.$tdom.'/'.$trest.'/');
464: $sortkey=$role."$trest:$tdom";
465: } elsif ($role eq 'au') {
466: # Authors
467: my $home = &Apache::lonnet::homeserver
468: ($ENV{'user.name'},$ENV{'user.domain'});
469: my $allowed=0;
470: my @ids=&Apache::lonnet::current_machine_ids();
471: foreach my $id (@ids) { if ($id eq $home) { $allowed=1; } }
472: if (!$allowed) {
473: $button=0;
474: $switchserver=&Apache::lonnet::escape('http://'.
475: $Apache::lonnet::hostname{$home}.
476: '/adm/login?domain='.$ENV{'user.domain'}.
477: '&username='.$ENV{'user.name'}.
478: '&firsturl=/priv/'.$ENV{'user.name'});
479: }
480: #next if ($home eq 'no_host');
481: $home = $Apache::lonnet::hostname{$home};
482: $ttype='Construction Space';
483: $twhere=&mt('Domain').': '.$tdom.'<br />'.&mt('Server').
484: ': '.$home;
485: $ENV{'course.'.$tdom.'_'.$trest.'.description'}='ca';
486: $tremark.=&Apache::lonhtmlcommon::authorbombs('/res/'.$tdom.'/'.$ENV{'user.name'}.'/');
487: $sortkey=$role;
488: } elsif ($trest) {
489: $ttype='Course';
490: if ($tsection) {
491: $ttype.='<br>'.&mt('Section/Group').': '.$tsection;
492: }
493: my $tcourseid=$tdom.'_'.$trest;
494: if ($ENV{'course.'.$tcourseid.'.description'}) {
495: $twhere=$ENV{'course.'.$tcourseid.'.description'};
496: $sortkey=$role."\0".$tdom."\0".$twhere."\0".$envkey;
497: unless ($twhere eq &mt('Currently not available')) {
498: $twhere.=' <font size="-2">'.
499: &Apache::loncommon::syllabuswrapper(&mt('Syllabus'),$trest,$tdom,$tfont).
500: '</font>';
501: }
502: } else {
503: my %newhash=Apache::lonnet::coursedescription
504: ($tcourseid);
505: if (%newhash) {
506: $sortkey=$role."\0".$tdom."\0".$newhash{'description'}.
507: "\0".$envkey;
508: $twhere=$newhash{'description'}.
509: ' <font size="-2">'.
510: &Apache::loncommon::syllabuswrapper(&mt('Syllabus'),$trest,$tdom,$tfont).
511: '</font>';
512: } else {
513: $twhere=&mt('Currently not available');
514: $ENV{'course.'.$tcourseid.'.description'}=$twhere;
515: $sortkey=$role."\0".$tdom."\0".$twhere."\0".$envkey;
516: }
517: }
518: if ($role ne 'st') { $twhere.="<br />".&mt('Domain').":".$tdom; }
519: } elsif ($tdom) {
520: $ttype='Domain';
521: $twhere=$tdom;
522: $sortkey=$role.$twhere;
523: } else {
524: $ttype='System';
525: $twhere=&mt('system wide');
526: $sortkey=$role.$twhere;
527: }
528:
529: $roletext.='<tr bgcolor='.$tbg.'>';
530: unless ($nochoose) {
531: if (!$button) {
532: if ($switchserver) {
533: $roletext.='<td><a href="/adm/logout?handover='.
534: $switchserver.'">'.&mt('Switch Server').'</a></td>';
535: } else {
536: $roletext.=('<td> </td>');
537: }
538: } elsif ($tstatus eq 'is') {
539: $roletext.=('<td><input type=submit value="'.
540: &mt('Select').'" name="'.
541: $trolecode.'"></td>');
542: } elsif ($tryagain) {
543: $roletext.=
544: '<td><input type=submit value="'.
545: &mt('Try Selecting Again').'" name="'.$trolecode.'"></td>';
546: } elsif ($advanced) {
547: $roletext.=
548: '<td><input type=submit value="'.
549: &mt('Re-Initialize').'" name="'.$trolecode.'"></td>';
550: } else {
551: $roletext.='<td> </td>';
552: }
553: }
554: $tremark.=&Apache::lonannounce::showday(time,1,
555: &Apache::lonannounce::readcalendar($tdom.'_'.$trest));
556:
557: $roletext.='<td><font color="'.$tfont.'">'.$trole.
558: '</font></td><td><font color="'.$tfont.'">'.$ttype.
559: '</font></td><td><font color="'.$tfont.'">'.$twhere.
560: '</font></td><td><font color="'.$tfont.'">'.$tpstart.
561: '</font></td><td><font color="'.$tfont.'">'.$tpend.
562: '</font></td><td><font color="'.$tfont.'">'.$tremark.
563: ' </font></td></tr>'."\n";
564: $roletext{$envkey}=$roletext;
565: if (!$sortkey) {$sortkey=$twhere."\0".$envkey;}
566: $sortrole{$sortkey}=$envkey;
567: $roleclass{$envkey}=$ttype;
568: }
569: }
570: }
571: # No active roles
572: if ($countactive==0) {
573: if ($inrole) {
574: $r->print('<h2>'.&mt('Currently no additional roles or courses').'</h2>');
575: } else {
576: $r->print('<h2>'.&mt('Currently no active roles or courses').'</h2>');
577: }
578: $r->print('</form></body></html>');
579: return OK;
580: # Is there only one choice?
581: } elsif (($countactive==1) && ($ENV{'request.role'} eq 'cm')) {
582: $r->print('<h3>'.&mt('Please stand by.').'</h3>'.
583: '<input type="hidden" name="'.$possiblerole.'" value="1" />');
584: $r->print("</form>\n");
585: $r->rflush();
586: $r->print('<script>document.forms.rolechoice.submit();</script>');
587: $r->print('</body></html>');
588: return OK;
589: }
590: # More than one possible role
591: # ----------------------------------------------------------------------- Table
592: unless (($advanced) || ($nochoose)) {
593: $r->print("<h2>".&mt('Select a Course to Enter')."</h2>\n");
594: }
595: $r->print('<br /><table><tr>');
596: unless ($nochoose) { $r->print('<th> </th>'); }
597: $r->print('<th>'.&mt('User Role').'</th><th colspan=2>'.&mt('Extent').
598: '</th><th>'.&mt('Start').'</th><th>'.&mt('End').'</th><th>'.
599: &mt('Remark').'</th></tr>'."\n");
600: my $doheaders=-1;
601: foreach my $type ('Construction Space','Course','Domain','System') {
602: my $haverole=0;
603: foreach my $which (sort {uc($a) cmp uc($b)} (keys(%sortrole))) {
604: if ($roleclass{$sortrole{$which}} =~ /^\Q$type\E/) {
605: $haverole=1;
606: }
607: }
608: if ($haverole) { $doheaders++; }
609: }
610: foreach my $type ('Construction Space','Course','Domain','System') {
611: my $output;
612: foreach my $which (sort {uc($a) cmp uc($b)} (keys(%sortrole))) {
613: if ($roleclass{$sortrole{$which}} =~ /^\Q$type\E/) {
614: $output.=&mt($roletext{$sortrole{$which}});
615: }
616: }
617: if ($output) {
618: if ($doheaders > 0) {
619: $r->print("<tr bgcolor='#BBffBB'>".
620: "<td align='center' colspan='7'>".&mt($type)."</td>");
621: }
622: $r->print($output);
623: }
624: }
625: my $tremark='';
626: my $tfont='#003300';
627: if ($ENV{'request.role'} eq 'cm') {
628: $r->print('<tr bgcolor="#11CC55">');
629: $tremark=&mt('Currently selected. ');
630: $tfont='#002200';
631: } else {
632: $r->print('<tr bgcolor="#77FF77">');
633: }
634: unless ($nochoose) {
635: if ($ENV{'request.role'} ne 'cm') {
636: $r->print('<td><input type=submit value="'.
637: &mt('Select').'" name="cm"></td>');
638: } else {
639: $r->print('<td> </td>');
640: }
641: }
642: $r->print('<td colspan=5><font color="'.$tfont.'">'.&mt('No role specified').
643: '</font></td><td><font color="'.$tfont.'">'.$tremark.
644: ' </font></td></tr>'."\n");
645:
646: $r->print('</table>');
647: unless ($nochoose) {
648: $r->print("</form>\n");
649: }
650: # ------------------------------------------------------------ Privileges Info
651: if (($advanced) && (($ENV{'user.error.msg'}) || ($error))) {
652: $r->print('<hr><h2>Current Privileges</h2>');
653:
654: foreach $envkey (sort keys %ENV) {
655: if ($envkey=~/^user\.priv\.$ENV{'request.role'}\./) {
656: my $where=$envkey;
657: $where=~s/^user\.priv\.$ENV{'request.role'}\.//;
658: my $ttype;
659: my $twhere;
660: my ($tdom,$trest,$tsec)=
661: split(/\//,Apache::lonnet::declutter($where));
662: if ($trest) {
663: if ($ENV{'course.'.$tdom.'_'.$trest.'.description'} eq 'ca') {
664: $ttype='Construction Space';
665: $twhere='User: '.$trest.', Domain: '.$tdom;
666: } else {
667: $ttype='Course';
668: $twhere=$ENV{'course.'.$tdom.'_'.$trest.'.description'};
669: if ($tsec) {
670: $twhere.=' (Section/Group: '.$tsec.')';
671: }
672: }
673: } elsif ($tdom) {
674: $ttype='Domain';
675: $twhere=$tdom;
676: } else {
677: $ttype='System';
678: $twhere='/';
679: }
680: $r->print("\n<h3>".$ttype.': '.$twhere.'</h3><ul>');
681: foreach (sort split(/:/,$ENV{$envkey})) {
682: if ($_) {
683: my ($prv,$restr)=split(/\&/,$_);
684: my $trestr='';
685: if ($restr ne 'F') {
686: my $i;
687: $trestr.=' (';
688: for ($i=0;$i<length($restr);$i++) {
689: $trestr.=
690: Apache::lonnet::plaintext(substr($restr,$i,1));
691: if ($i<length($restr)-1) { $trestr.=', '; }
692: }
693: $trestr.=')';
694: }
695: $r->print('<li>'.
696: Apache::lonnet::plaintext($prv).$trestr.
697: '</li>');
698: }
699: }
700: $r->print('</ul>');
701: }
702: }
703: }
704: $r->print(&Apache::lonnet::getannounce());
705: if ($advanced) {
706: $r->print('<p><small><i>This is LON-CAPA '.
707: $r->dir_config('lonVersion').'</i><br />'.
708: '<a href="/adm/logout">'.&mt('Logout').'</a></small></p>');
709: }
710: $r->print("</body></html>\n");
711: return OK;
712: }
713:
714: 1;
715: __END__
716:
717: =head1 NAME
718:
719: Apache::lonroles - User Roles Screen
720:
721: =head1 SYNOPSIS
722:
723: Invoked by /etc/httpd/conf/srm.conf:
724:
725: <Location /adm/roles>
726: PerlAccessHandler Apache::lonacc
727: SetHandler perl-script
728: PerlHandler Apache::lonroles
729: ErrorDocument 403 /adm/login
730: ErrorDocument 500 /adm/errorhandler
731: </Location>
732:
733: =head1 OVERVIEW
734:
735: =head2 Choosing Roles
736:
737: C<lonroles> is a handler that allows a user to switch roles in
738: mid-session. LON-CAPA attempts to work with "No Role Specified", the
739: default role that a user has before selecting a role, as widely as
740: possible, but certain handlers for example need specification which
741: course they should act on, etc. Both in this scenario, and when the
742: handler determines via C<lonnet>'s C<&allowed> function that a certain
743: action is not allowed, C<lonroles> is used as error handler. This
744: allows the user to select another role which may have permission to do
745: what they were trying to do. C<lonroles> can also be accessed via the
746: B<CRS> button in the Remote Control.
747:
748: =begin latex
749:
750: \begin{figure}
751: \begin{center}
752: \includegraphics[width=0.45\paperwidth,keepaspectratio]{Sample_Roles_Screen}
753: \caption{\label{Sample_Roles_Screen}Sample Roles Screen}
754: \end{center}
755: \end{figure}
756:
757: =end latex
758:
759: =head2 Role Initialization
760:
761: The privileges for a user are established at login time and stored in the session environment. As a consequence, a new role does not become active till the next login. Handlers are able to query for privileges using C<lonnet>'s C<&allowed> function. When a user first logs in, their role is the "common" role, which means that they have the sum of all of their privileges. During a session it might become necessary to choose a particular role, which as a consequence also limits the user to only the privileges in that particular role.
762:
763: =head1 INTRODUCTION
764:
765: This module enables a user to select what role he wishes to
766: operate under (instructor, student, teaching assistant, course
767: coordinator, etc). These roles are pre-established by the actions
768: of upper-level users.
769:
770: This is part of the LearningOnline Network with CAPA project
771: described at http://www.lon-capa.org.
772:
773: =head1 HANDLER SUBROUTINE
774:
775: This routine is called by Apache and mod_perl.
776:
777: =over 4
778:
779: =item *
780:
781: Roles Initialization (yes/no)
782:
783: =item *
784:
785: Get Error Message from Environment
786:
787: =item *
788:
789: Who is this?
790:
791: =item *
792:
793: Generate Page Output
794:
795: =item *
796:
797: Choice or no choice
798:
799: =item *
800:
801: Table
802:
803: =item *
804:
805: Privileges
806:
807: =back
808:
809: =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