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[LON-CAPA] /
loncom /
auth /
lonroles.pm
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1.104:
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Tue Nov 9 18:18:02 2004 UTC (19 years, 7 months ago) by
raeburn
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Suppress display of CC roles in a domain in which the user is a DC. Allow the DC to select from recently visited CC roles in the domain, or select a course via lonpickcourse.
1: # The LearningOnline Network with CAPA
2: # User Roles Screen
3: #
4: # $Id: lonroles.pm,v 1.104 2004/11/09 18:18:02 raeburn 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::lonhtmlcommon;
40: use Apache::lonannounce;
41: use Apache::lonlocal;
42:
43: sub redirect_user {
44: my ($r,$title,$url,$msg,$launch_nav) = @_;
45: $msg = $title if (! defined($msg));
46: &Apache::loncommon::content_type($r,'text/html');
47: &Apache::loncommon::no_cache($r);
48: $r->send_http_header;
49: my $swinfo=&Apache::lonmenu::rawconfig();
50: my $navwindow;
51: if ($launch_nav eq 'on') {
52: $navwindow.=&Apache::lonnavmaps::launch_win('now');
53: } else {
54: $navwindow.=&Apache::lonnavmaps::close();
55: }
56: my $bodytag=&Apache::loncommon::bodytag('Switching Role');
57: # Note to style police:
58: # This must only replace the spaces, nothing else, or it bombs elsewhere.
59: $url=~s/ /\%20/g;
60: $r->print(<<ENDREDIR);
61: <head><title>$title</title>
62: <meta HTTP-EQUIV="Refresh" CONTENT="1; url=$url">
63: </head>
64: <html>
65: $bodytag
66: <script type="text/javascript">
67: $swinfo
68: </script>
69: $navwindow
70: <h1>$msg</h1>
71: <a href="$url">Continue</a>
72: </body>
73: </html>
74: ENDREDIR
75: return;
76: }
77:
78: sub handler {
79:
80: my $r = shift;
81:
82: my $now=time;
83: my $then=$ENV{'user.login.time'};
84: my $envkey;
85: my $dcselect='';
86:
87:
88: # ================================================================== Roles Init
89: if ($ENV{'form.selectrole'}) {
90: if ($ENV{'form.dcselected'}) {
91: my $dcdom = $ENV{'form.dcselected'};
92: my $dckey = 'user.role.dc./'.$dcdom.'/';
93: if ($ENV{$dckey}) {
94: my ($dcstart,$dcend)=split(/\./,$ENV{$dckey});
95: my $active_dc = 1;
96: if ($dcstart) {
97: if ($dcstart>$then) {
98: $active_dc = 0;
99: }
100: }
101: if ($dcend) {
102: if ($dcend < $then) {
103: $active_dc = 0;
104: }
105: }
106: if ($active_dc) {
107: $dcselect = $dcdom;
108: }
109: }
110: }
111: if ($ENV{'request.course.id'}) {
112: my %temp=('logout_'.$ENV{'request.course.id'} => time);
113: &Apache::lonnet::put('email_status',\%temp);
114: &Apache::lonnet::delenv('user.state.'.$ENV{'request.course.id'});
115: }
116: &Apache::lonnet::appenv("request.course.id" => '',
117: "request.course.fn" => '',
118: "request.course.uri" => '',
119: "request.course.sec" => '',
120: "request.role" => 'cm',
121: "request.role.adv" => $ENV{'user.adv'},
122: "request.role.domain" => $ENV{'user.domain'});
123: foreach $envkey (keys %ENV) {
124: next if ($envkey!~/^user\.role\./);
125: my ($where,$trolecode,$role,$tstatus,$tend,$tstart);
126: &role_status($envkey,$then,$now,\$role,\$where,\$trolecode,\$tstatus,\$tstart,\$tend);
127: if ($ENV{'form.'.$trolecode}) {
128: if ($tstatus eq 'is') {
129: $where=~s/^\///;
130: my ($cdom,$cnum,$csec)=split(/\//,$where);
131: # check for keyed access
132: if (($role eq 'st') &&
133: ($ENV{'course.'.$cdom.'_'.$cnum.'.keyaccess'} eq 'yes')) {
134: # who is key authority?
135: my $authdom=$cdom;
136: my $authnum=$cnum;
137: if ($ENV{'course.'.$cdom.'_'.$cnum.'.keyauth'}) {
138: ($authnum,$authdom)=
139: split(/\W/,$ENV{'course.'.$cdom.'_'.$cnum.'.keyauth'});
140: }
141: # check with key authority
142: unless (&Apache::lonnet::validate_access_key(
143: $ENV{'environment.key.'.$cdom.'_'.$cnum},
144: $authdom,$authnum)) {
145: # there is no valid key
146: if ($ENV{'form.newkey'}) {
147: # student attempts to register a new key
148: &Apache::loncommon::content_type($r,'text/html');
149: &Apache::loncommon::no_cache($r);
150: $r->send_http_header;
151: my $swinfo=&Apache::lonmenu::rawconfig();
152: my $bodytag=&Apache::loncommon::bodytag
153: ('Verifying Access Key to Unlock this Course');
154: my $buttontext=&mt('Enter Course');
155: my $message=&mt('Successfully registered key');
156: my $assignresult=
157: &Apache::lonnet::assign_access_key(
158: $ENV{'form.newkey'},
159: $authdom,$authnum,
160: $cdom,$cnum,
161: $ENV{'user.domain'},
162: $ENV{'user.name'},
163: 'Assigned from '.$ENV{'REMOTE_ADDR'}.' at '.localtime().' for '.
164: $trolecode);
165: unless ($assignresult eq 'ok') {
166: $assignresult=~s/^error\:\s*//;
167: $message=&mt($assignresult).
168: '<br /><a href="/adm/logout">'.
169: &mt('Logout').'</a>';
170: $buttontext=&mt('Re-Enter Key');
171: }
172: $r->print(<<ENDENTEREDKEY);
173: <head><title>Verifying Course Access Key</title>
174: </head>
175: <html>
176: $bodytag
177: <script>
178: $swinfo
179: </script>
180: <form method="post">
181: <input type="hidden" name="selectrole" value="1" />
182: <input type="hidden" name="$trolecode" value="1" />
183: <font size="+2">$message</font><br />
184: <input type="submit" value="$buttontext" />
185: </form>
186: </body></html>
187: ENDENTEREDKEY
188: return OK;
189: } else {
190: # print form to enter a new key
191: &Apache::loncommon::content_type($r,'text/html');
192: &Apache::loncommon::no_cache($r);
193: $r->send_http_header;
194: my $swinfo=&Apache::lonmenu::rawconfig();
195: my $bodytag=&Apache::loncommon::bodytag
196: ('Enter Access Key to Unlock this Course');
197: $r->print(<<ENDENTERKEY);
198: <head><title>Entering Course Access Key</title>
199: </head>
200: <html>
201: $bodytag
202: <script>
203: $swinfo
204: </script>
205: <form method="post">
206: <input type="hidden" name="selectrole" value="1" />
207: <input type="hidden" name="$trolecode" value="1" />
208: <input type="text" size="20" name="newkey" value="$ENV{'form.newkey'}" />
209: <input type="submit" value="Enter key" />
210: </form>
211: </body></html>
212: ENDENTERKEY
213: return OK;
214: }
215: }
216: }
217: &Apache::lonnet::log($ENV{'user.domain'},
218: $ENV{'user.name'},
219: $ENV{'user.home'},
220: "Role ".$trolecode);
221:
222: &Apache::lonnet::appenv(
223: 'request.role' => $trolecode,
224: 'request.role.domain' => $cdom,
225: 'request.course.sec' => $csec);
226: my $tadv=0;
227: if (&Apache::lonnet::allowed('adv') eq 'F') { $tadv=1; }
228: &Apache::lonnet::appenv('request.role.adv' => $tadv);
229:
230: my $msg=&mt('Entering course ...');
231:
232: if (($cnum) && ($role ne 'ca')) {
233: my ($furl,$ferr)=
234: &Apache::lonuserstate::readmap($cdom.'/'.$cnum);
235: if (($ENV{'form.orgurl'}) &&
236: ($ENV{'form.orgurl'}!~/^\/adm\/flip/)) {
237: my $dest=$ENV{'form.orgurl'};
238: if ( &Apache::lonnet::mod_perl_version() == 2 ) {
239: &Apache::lonnet::cleanenv();
240: }
241: $r->internal_redirect($dest);
242: return OK;
243: } else {
244: unless ($ENV{'request.course.id'}) {
245: &Apache::lonnet::appenv(
246: "request.course.id" => $cdom.'_'.$cnum);
247: $furl='/adm/roles?tryagain=1';
248: $msg=
249: '<h1><font color=red>'.
250: &mt('Could not initialize course at this time.').
251: '</font></h1><h3>'.&mt('Please try again.').'</h3>'.$ferr;
252: }
253:
254: # Check to see if the user is a CC entering a course
255: # for the first time
256: my (undef, undef, $role, $courseid) = split(/\./, $envkey);
257: if (substr($courseid, 0, 1) eq '/') {
258: $courseid = substr($courseid, 1);
259: }
260: $courseid =~ s/\//_/;
261: if ($role eq 'cc' && $ENV{'course.' . $courseid .
262: '.course.helper.not.run'}) {
263: $furl = "/adm/helper/course.initialization.helper";
264: }
265: # Check to see if the user is a DC coming from the
266: # course selection page
267: my $dcflag = 0;
268: if ($ENV{'form.dccourse'}) {
269: my $formaction = '/adm/roles/';
270: my ($dcdom,$pickedcourse) = split/_/,$courseid;
271: if ($ENV{'user.role.dc./'.$dcdom.'/'}) {
272: &Apache::lonhtmlcommon::store_recent('cc_pickby_dc_'.$dcdom,
273: $courseid,$formaction);
274: }
275: }
276: #
277: # Send the user to the course they selected
278: &redirect_user($r,&mt('Entering Course'),
279: $furl,$msg,
280: $ENV{'environment.remotenavmap'});
281: return OK;
282: }
283: }
284: #
285: # Send the user to the construction space they selected
286: if ($role =~ /^(au|ca)$/) {
287: my $redirect_url = '/priv/';
288: if ($role eq 'au') {
289: $redirect_url.=$ENV{'user.name'};
290: } else {
291: $where =~ /\/(.*)$/;
292: $redirect_url .= $1;
293: }
294: $redirect_url .= '/';
295: &redirect_user($r,&mt('Entering Construction Space'),
296: $redirect_url);
297: return OK;
298: }
299: if ($role eq 'dc') {
300: unless ($dcselect) {
301: my $redirect_url = '/adm/menu/';
302: &redirect_user($r,&mt('Loading Domain Coordinator Menu'),
303: $redirect_url);
304: return OK;
305: }
306: }
307: }
308: }
309: }
310: }
311:
312:
313: # =============================================================== No Roles Init
314:
315: &Apache::loncommon::content_type($r,'text/html');
316: &Apache::loncommon::no_cache($r);
317: $r->send_http_header;
318: return OK if $r->header_only;
319:
320: my $swinfo=&Apache::lonmenu::rawconfig();
321: my $setDCchoice = &dc_script();
322: my $bodytag=&Apache::loncommon::bodytag('User Roles');
323: my $helptag='<table><tr><td>'.&Apache::loncommon::help_open_menu('','General Intro','General_Intro','User Roles',1,undef,undef,undef,undef,,&mt("Click here for help")).'</td></td></tr></table>';
324: $r->print(<<ENDHEADER);
325: <html>
326: <head>
327: <title>LON-CAPA User Roles</title>
328: </head>
329: $bodytag
330: $helptag<br />
331: <script>
332: $swinfo
333: window.focus();
334: $setDCchoice
335: </script>
336: ENDHEADER
337:
338: # ------------------------------------------ Get Error Message from Environment
339:
340: my ($fn,$priv,$nochoose,$error,$msg)=split(/:/,$ENV{'user.error.msg'});
341: if ($ENV{'user.error.msg'}) {
342: $r->log_reason(
343: "$msg for $ENV{'user.name'} domain $ENV{'user.domain'} access $priv",$fn);
344: }
345:
346: # ------------------------------------------------- Can this user re-init, etc?
347:
348: my $advanced=$ENV{'user.adv'};
349: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},['tryagain']);
350: my $tryagain=$ENV{'form.tryagain'};
351:
352: # -------------------------------------------------------- Generate Page Output
353: # -------------------------------------------------------- Domain Coordinator?
354: if ($dcselect ne '') {
355: &choosecourse_display($r,$dcselect,$then,$now);
356: return OK;
357: }
358:
359: # --------------------------------------------------------------- Error Header?
360: if ($error) {
361: $r->print("<h1>LON-CAPA Access Control</h1>");
362: $r->print("<hr><pre>Access : ".
363: Apache::lonnet::plaintext($priv)."\n");
364: $r->print("Resource: $fn\n");
365: $r->print("Action : $msg\n</pre><hr>");
366: } else {
367: if ($ENV{'user.error.msg'}) {
368: $r->print(
369: '<h3><font color=red>'.
370: &mt('You need to choose another user role or enter a specific course for this function').'</font></h3>');
371: }
372: }
373: # -------------------------------------------------------- Choice or no choice?
374: if ($nochoose) {
375: if ($advanced) {
376: $r->print("<h2>".&mt('Assigned User Roles')."</h2>\n");
377: } else {
378: $r->print("<h2>".&mt('Sorry ...')."</h2>\n".
379: &mt('This resource might be part of'));
380: if ($ENV{'request.course.id'}) {
381: $r->print(&mt(' another'));
382: } else {
383: $r->print(&mt(' a certain'));
384: }
385: $r->print(&mt(' course.').'</body></html>');
386: return OK;
387: }
388: } else {
389: if ($advanced) {
390: $r->print(&mt("Your home server is ").
391: $Apache::lonnet::hostname{&Apache::lonnet::homeserver
392: ($ENV{'user.name'},$ENV{'user.domain'})}.
393: "<br />\n");
394: $r->print(&mt(
395: "Author and Co-Author roles may not be available on servers other than your home server."));
396: }
397: if (($ENV{'REDIRECT_QUERY_STRING'}) && ($fn)) {
398: $fn.='?'.$ENV{'REDIRECT_QUERY_STRING'};
399: }
400: $r->print('<form method="post" name="rolechoice" action="'.(($fn)?$fn:$r->uri).'">');
401: $r->print('<input type=hidden name=orgurl value="'.$fn.'">');
402: $r->print('<input type=hidden name=selectrole value=1>');
403: }
404: if ($ENV{'user.adv'}) {
405: $r->print(
406: '<br />'.&mt('Show all roles').': <input type="checkbox" name="showall"');
407: if ($ENV{'form.showall'}) { $r->print(' checked'); }
408: $r->print('><input type=submit value="'.&mt('Display').'">');
409: }
410:
411: my %dcroles = ();
412: my $numdc = &check_fordc(\%dcroles,$then);
413:
414: my (%roletext,%sortrole,%roleclass);
415: my $countactive=0;
416: my $inrole=0;
417: my $possiblerole='';
418: foreach $envkey (sort keys %ENV) {
419: my $button = 1;
420: my $switchserver='';
421: my $roletext;
422: my $sortkey;
423: if ($envkey=~/^user\.role\./) {
424: my ($role,$where,$trolecode,$tstart,$tend,$tremark,$tstatus,$tpstart,$tpend,$tfont);
425: &role_status($envkey,$then,$now,\$role,\$where,\$trolecode,\$tstatus,\$tstart,\$tend);
426: next if (!defined($role) || $role eq '');
427: $tremark='';
428: $tpstart=' ';
429: $tpend=' ';
430: $tfont='#000000';
431: if ($tstart) {
432: $tpstart=&Apache::lonlocal::locallocaltime($tstart);
433: }
434: if ($tend) {
435: $tpend=&Apache::lonlocal::locallocaltime($tend);
436: }
437: if ($ENV{'request.role'} eq $trolecode) {
438: $tstatus='selected';
439: }
440: my $tbg;
441: if (($tstatus eq 'is') || ($tstatus eq 'selected') ||
442: ($ENV{'form.showall'})) {
443: if ($tstatus eq 'is') {
444: $tbg='#77FF77';
445: $tfont='#003300';
446: $possiblerole=$trolecode;
447: $countactive++;
448: } elsif ($tstatus eq 'future') {
449: $tbg='#FFFF77';
450: $button=0;
451: } elsif ($tstatus eq 'will') {
452: $tbg='#FFAA77';
453: $tremark.=&mt('Active at next login. ');
454: } elsif ($tstatus eq 'expired') {
455: $tbg='#FF7777';
456: $tfont='#330000';
457: $button=0;
458: } elsif ($tstatus eq 'will_not') {
459: $tbg='#AAFF77';
460: $tremark.=&mt('Expired after logout. ');
461: } elsif ($tstatus eq 'selected') {
462: $tbg='#11CC55';
463: $tfont='#002200';
464: $inrole=1;
465: $countactive++;
466: $tremark.=&mt('Currently selected. ');
467: }
468: my $trole;
469: if ($role =~ /^cr\//) {
470: my ($rdummy,$rdomain,$rauthor,$rrole)=split(/\//,$role);
471: $tremark.='<br>'.&mt('Defined by ').$rauthor.
472: &mt(' at ').$rdomain.'.';
473: $trole=$rrole;
474: } else {
475: $trole=Apache::lonnet::plaintext($role);
476: }
477: my $ttype;
478: my $twhere;
479: my ($tdom,$trest,$tsection)=
480: split(/\//,Apache::lonnet::declutter($where));
481: # First, Co-Authorship roles
482: if ($role eq 'ca') {
483: my $home = &Apache::lonnet::homeserver($trest,$tdom);
484: my $allowed=0;
485: my @ids=&Apache::lonnet::current_machine_ids();
486: foreach my $id (@ids) { if ($id eq $home) { $allowed=1; } }
487: if (!$allowed) {
488: $button=0;
489: $switchserver=&Apache::lonnet::escape('http://'.
490: $Apache::lonnet::hostname{$home}.
491: '/adm/login?domain='.$ENV{'user.domain'}.
492: '&username='.$ENV{'user.name'}.
493: '&firsturl=/priv/'.$trest.'/');
494: }
495: #next if ($home eq 'no_host');
496: $home = $Apache::lonnet::hostname{$home};
497: $ttype='Construction Space';
498: $twhere=&mt('User').': '.$trest.'<br />'.&mt('Domain').
499: ': '.$tdom.'<br />'.
500: ' '.&mt('Server').': '.$home;
501: $ENV{'course.'.$tdom.'_'.$trest.'.description'}='ca';
502: $tremark.=&Apache::lonhtmlcommon::authorbombs('/res/'.$tdom.'/'.$trest.'/');
503: $sortkey=$role."$trest:$tdom";
504: } elsif ($role eq 'au') {
505: # Authors
506: my $home = &Apache::lonnet::homeserver
507: ($ENV{'user.name'},$ENV{'user.domain'});
508: my $allowed=0;
509: my @ids=&Apache::lonnet::current_machine_ids();
510: foreach my $id (@ids) { if ($id eq $home) { $allowed=1; } }
511: if (!$allowed) {
512: $button=0;
513: $switchserver=&Apache::lonnet::escape('http://'.
514: $Apache::lonnet::hostname{$home}.
515: '/adm/login?domain='.$ENV{'user.domain'}.
516: '&username='.$ENV{'user.name'}.
517: '&firsturl=/priv/'.$ENV{'user.name'}.'/');
518: }
519: #next if ($home eq 'no_host');
520: $home = $Apache::lonnet::hostname{$home};
521: $ttype='Construction Space';
522: $twhere=&mt('Domain').': '.$tdom.'<br />'.&mt('Server').
523: ': '.$home;
524: $ENV{'course.'.$tdom.'_'.$trest.'.description'}='ca';
525: $tremark.=&Apache::lonhtmlcommon::authorbombs('/res/'.$tdom.'/'.$ENV{'user.name'}.'/');
526: $sortkey=$role;
527: } elsif ($trest) {
528: $ttype='Course';
529: if ($tsection) {
530: $ttype.='<br>'.&mt('Section/Group').': '.$tsection;
531: }
532: my $tcourseid=$tdom.'_'.$trest;
533: if ($ENV{'course.'.$tcourseid.'.description'}) {
534: $twhere=$ENV{'course.'.$tcourseid.'.description'};
535: $sortkey=$role."\0".$tdom."\0".$twhere."\0".$envkey;
536: unless ($twhere eq &mt('Currently not available')) {
537: $twhere.=' <font size="-2">'.
538: &Apache::loncommon::syllabuswrapper(&mt('Syllabus'),$trest,$tdom,$tfont).
539: '</font>';
540: }
541: } else {
542: my %newhash=Apache::lonnet::coursedescription
543: ($tcourseid);
544: if (%newhash) {
545: $sortkey=$role."\0".$tdom."\0".$newhash{'description'}.
546: "\0".$envkey;
547: $twhere=$newhash{'description'}.
548: ' <font size="-2">'.
549: &Apache::loncommon::syllabuswrapper(&mt('Syllabus'),$trest,$tdom,$tfont).
550: '</font>';
551: } else {
552: $twhere=&mt('Currently not available');
553: $ENV{'course.'.$tcourseid.'.description'}=$twhere;
554: $sortkey=$role."\0".$tdom."\0".$twhere."\0".$envkey;
555: }
556: }
557: if ($role ne 'st') { $twhere.="<br />".&mt('Domain').":".$tdom; }
558: } elsif ($tdom) {
559: $ttype='Domain';
560: $twhere=$tdom;
561: $sortkey=$role.$twhere;
562: } else {
563: $ttype='System';
564: $twhere=&mt('system wide');
565: $sortkey=$role.$twhere;
566: }
567:
568: $roletext.='<tr bgcolor='.$tbg.'>';
569: unless ($nochoose) {
570: if (!$button) {
571: if ($switchserver) {
572: $roletext.='<td><a href="/adm/logout?handover='.
573: $switchserver.'">'.&mt('Switch Server').'</a></td>';
574: } else {
575: $roletext.=('<td> </td>');
576: }
577: } elsif ($tstatus eq 'is') {
578: $roletext.=('<td><input type=submit value="'.
579: &mt('Select').'" name="'.
580: $trolecode.'"></td>');
581: } elsif ($tryagain) {
582: $roletext.=
583: '<td><input type=submit value="'.
584: &mt('Try Selecting Again').'" name="'.$trolecode.'"></td>';
585: } elsif ($advanced) {
586: $roletext.=
587: '<td><input type=submit value="'.
588: &mt('Re-Initialize').'" name="'.$trolecode.'"></td>';
589: } else {
590: $roletext.='<td> </td>';
591: }
592: }
593: $tremark.=&Apache::lonannounce::showday(time,1,
594: &Apache::lonannounce::readcalendar($tdom.'_'.$trest));
595:
596: $roletext.='<td><font color="'.$tfont.'">'.$trole.
597: '</font></td><td><font color="'.$tfont.'">'.$ttype.
598: '</font></td><td><font color="'.$tfont.'">'.$twhere.
599: '</font></td><td><font color="'.$tfont.'">'.$tpstart.
600: '</font></td><td><font color="'.$tfont.'">'.$tpend.
601: '</font></td><td><font color="'.$tfont.'">'.$tremark.
602: ' </font></td></tr>'."\n";
603: $roletext{$envkey}=$roletext;
604: if (!$sortkey) {$sortkey=$twhere."\0".$envkey;}
605: $sortrole{$sortkey}=$envkey;
606: $roleclass{$envkey}=$ttype;
607: }
608: }
609: }
610: # No active roles
611: if ($countactive==0) {
612: if ($inrole) {
613: $r->print('<h2>'.&mt('Currently no additional roles or courses').'</h2>');
614: } else {
615: $r->print('<h2>'.&mt('Currently no active roles or courses').'</h2>');
616: }
617: $r->print('</form></body></html>');
618: return OK;
619: # Is there only one choice?
620: } elsif (($countactive==1) && ($ENV{'request.role'} eq 'cm')) {
621: $r->print('<h3>'.&mt('Please stand by.').'</h3>'.
622: '<input type="hidden" name="'.$possiblerole.'" value="1" />');
623: $r->print("</form>\n");
624: $r->rflush();
625: $r->print('<script>document.forms.rolechoice.submit();</script>');
626: $r->print('</body></html>');
627: return OK;
628: }
629: # More than one possible role
630: # ----------------------------------------------------------------------- Table
631: unless (($advanced) || ($nochoose)) {
632: $r->print("<h2>".&mt('Select a Course to Enter')."</h2>\n");
633: }
634: $r->print('<br /><table><tr>');
635: unless ($nochoose) { $r->print('<th> </th>'); }
636: $r->print('<th>'.&mt('User Role').'</th><th colspan=2>'.&mt('Extent').
637: '</th><th>'.&mt('Start').'</th><th>'.&mt('End').'</th><th>'.
638: &mt('Remarks and Calendar Announcements').'</th></tr>'."\n");
639: my $doheaders=-1;
640: foreach my $type ('Construction Space','Course','Domain','System') {
641: my $haverole=0;
642: foreach my $which (sort {uc($a) cmp uc($b)} (keys(%sortrole))) {
643: if ($roleclass{$sortrole{$which}} =~ /^\Q$type\E/) {
644: $haverole=1;
645: }
646: }
647: if ($haverole) { $doheaders++; }
648: }
649: if ($numdc > 0) {
650: $r->print('<tr bgcolor="#BBffBB">'.
651: '<td align="center" colspan="7">'.
652: '<input type="hidden" name="all_cc_roles" value="1"/>'.
653: '<input type="hidden" name="dcselected" value=""/>'.
654: &mt('Domain').'</td>');
655: foreach my $dcdom (keys %dcroles) {
656: my $output = $roletext{$dcroles{$dcdom}};
657: my $ccrole = Apache::lonnet::plaintext('cc');
658: if ($ENV{'request.role'} =~ m-cc\./$dcdom/-) {
659: $output.=$roletext{'user.role.'.$ENV{'request.role'}};
660: }
661: $r->print($output);
662: $r->print('<tr bgcolor="#77FF77">');
663: $r->print('<td><input type="button" value="'.
664: &mt('Select').'" name="dcpick_'.$dcdom.'/" '.
665: 'onClick="setDCchoice('."'$dcdom'".')"></td>'.
666: '<td><font color="#002200">'.
667: $ccrole.'</font></td><td>'.&mt('Course').'</td>'.
668: '<td><font color="#002200"><b>'.&mt('All courses').'</b>'.
669: '<br />'.&mt('Domain').':'.$dcdom.'</font>'.
670: '<td colspan="4"><font color="#002200">'.
671: &mt('Course Coordinator access to all courses in domain').
672: ': <b>'.$dcdom.'</b></font></td></tr>'."\n");
673: }
674: foreach my $type ('Construction Space','Course','Domain','System') {
675: my $output;
676: foreach my $which (sort {uc($a) cmp uc($b)} (keys(%sortrole))) {
677: my $skiprole = 0;
678: foreach my $dcdom (keys %dcroles) {
679: if ($sortrole{$which} =~ m-(dc|cc)\./$dcdom/-) {
680: $skiprole = 1;
681: last;
682: }
683: }
684: if (($roleclass{$sortrole{$which}} =~ /^\Q$type\E/) && (!$skiprole)) {
685: $output.=$roletext{$sortrole{$which}};
686: }
687: }
688: if ($output) {
689: if ($doheaders > 0) {
690: $r->print("<tr bgcolor='#BBffBB'>".
691: "<td align='center' colspan='7'>".&mt($type)."</td>
692: ");
693: }
694: $r->print($output);
695: }
696: }
697: } else {
698: foreach my $type ('Construction Space','Course','Domain','System') {
699: my $output;
700: foreach my $which (sort {uc($a) cmp uc($b)} (keys(%sortrole))) {
701: if ($roleclass{$sortrole{$which}} =~ /^\Q$type\E/) {
702: $output.=$roletext{$sortrole{$which}};
703: }
704: }
705: if ($output) {
706: if ($doheaders > 0) {
707: $r->print("<tr bgcolor='#BBffBB'>".
708: "<td align='center' colspan='7'>".&mt($type)."</td>");
709: }
710: $r->print($output);
711: }
712: }
713: }
714: my $tremark='';
715: my $tfont='#003300';
716: if ($ENV{'request.role'} eq 'cm') {
717: $r->print('<tr bgcolor="#11CC55">');
718: $tremark=&mt('Currently selected. ');
719: $tfont='#002200';
720: } else {
721: $r->print('<tr bgcolor="#77FF77">');
722: }
723: unless ($nochoose) {
724: if ($ENV{'request.role'} ne 'cm') {
725: $r->print('<td><input type=submit value="'.
726: &mt('Select').'" name="cm"></td>');
727: } else {
728: $r->print('<td> </td>');
729: }
730: }
731: $r->print('<td colspan=5><font color="'.$tfont.'">'.&mt('No role specified').
732: '</font></td><td><font color="'.$tfont.'">'.$tremark.
733: ' </font></td></tr>'."\n");
734:
735: $r->print('</table>');
736: unless ($nochoose) {
737: $r->print("</form>\n");
738: }
739: # ------------------------------------------------------------ Privileges Info
740: if (($advanced) && (($ENV{'user.error.msg'}) || ($error))) {
741: $r->print('<hr><h2>Current Privileges</h2>');
742:
743: foreach $envkey (sort keys %ENV) {
744: if ($envkey=~/^user\.priv\.$ENV{'request.role'}\./) {
745: my $where=$envkey;
746: $where=~s/^user\.priv\.$ENV{'request.role'}\.//;
747: my $ttype;
748: my $twhere;
749: my ($tdom,$trest,$tsec)=
750: split(/\//,Apache::lonnet::declutter($where));
751: if ($trest) {
752: if ($ENV{'course.'.$tdom.'_'.$trest.'.description'} eq 'ca') {
753: $ttype='Construction Space';
754: $twhere='User: '.$trest.', Domain: '.$tdom;
755: } else {
756: $ttype='Course';
757: $twhere=$ENV{'course.'.$tdom.'_'.$trest.'.description'};
758: if ($tsec) {
759: $twhere.=' (Section/Group: '.$tsec.')';
760: }
761: }
762: } elsif ($tdom) {
763: $ttype='Domain';
764: $twhere=$tdom;
765: } else {
766: $ttype='System';
767: $twhere='/';
768: }
769: $r->print("\n<h3>".$ttype.': '.$twhere.'</h3><ul>');
770: foreach (sort split(/:/,$ENV{$envkey})) {
771: if ($_) {
772: my ($prv,$restr)=split(/\&/,$_);
773: my $trestr='';
774: if ($restr ne 'F') {
775: my $i;
776: $trestr.=' (';
777: for ($i=0;$i<length($restr);$i++) {
778: $trestr.=
779: Apache::lonnet::plaintext(substr($restr,$i,1));
780: if ($i<length($restr)-1) { $trestr.=', '; }
781: }
782: $trestr.=')';
783: }
784: $r->print('<li>'.
785: Apache::lonnet::plaintext($prv).$trestr.
786: '</li>');
787: }
788: }
789: $r->print('</ul>');
790: }
791: }
792: }
793: $r->print(&Apache::lonnet::getannounce());
794: if ($advanced) {
795: $r->print('<p><small><i>This is LON-CAPA '.
796: $r->dir_config('lonVersion').'</i><br />'.
797: '<a href="/adm/logout">'.&mt('Logout').'</a></small></p>');
798: }
799: $r->print("</body></html>\n");
800: return OK;
801: }
802:
803: sub role_status {
804: my ($rolekey,$then,$now,$role,$where,$trolecode,$tstatus,$tstart,$tend) = @_;
805: my @pwhere = ();
806: if (exists($ENV{$rolekey}) && $ENV{$rolekey} ne '') {
807: (undef,undef,$$role,@pwhere)=split(/\./,$rolekey);
808: unless (!defined($$role) || $$role eq '') {
809: $$where=join('.',@pwhere);
810: $$trolecode=$$role.'.'.$$where;
811: ($$tstart,$$tend)=split(/\./,$ENV{$rolekey});
812: $$tstatus='is';
813: if ($$tstart) {
814: if ($$tstart>$then) {
815: $$tstatus='future';
816: if ($$tstart<$now) { $$tstatus='will'; }
817: }
818: }
819: if ($$tend) {
820: if ($$tend<$then) {
821: $$tstatus='expired';
822: } elsif ($$tend<$now) {
823: $$tstatus='will_not';
824: }
825: }
826: }
827: }
828: }
829:
830: sub dc_script {
831: my $response = (<<"END");
832: function setDCchoice(caller) {
833: var dcname = "dc./"+caller+"/"
834: document.rolechoice.dcselected.value = caller
835: document.rolechoice.elements[3].name = dcname
836: document.rolechoice.submit()
837: }
838: END
839: return $response;
840: }
841:
842: sub check_fordc {
843: my ($dcroles,$then) = @_;
844: my $numdc = 0;
845: if ($ENV{'user.adv'}) {
846: foreach my $envkey (sort keys %ENV) {
847: if ($envkey=~/^user\.role\.dc\.\/(\w+)\/$/) {
848: my $dcdom = $1;
849: my $livedc = 1;
850: my ($tstart,$tend)=split(/\./,$ENV{$envkey});
851: if ($tstart) {
852: if ($tstart>$then) {
853: $livedc = 0;
854: }
855: }
856: if ($tend) {
857: if ($tend<$then) {
858: $livedc = 0;
859: }
860: }
861: if ($livedc) {
862: $$dcroles{$dcdom} = $envkey;
863: $numdc ++;
864: }
865: }
866: }
867: }
868: return $numdc;
869: }
870:
871: sub choosecourse_display {
872: my ($r,$dcdom,$then,$now) = @_;
873: my $cb_jscript = &Apache::loncommon::coursebrowser_javascript($dcdom,'dom');
874: my $verify_script = <<"END";
875: <script>
876: function verifyCoursePick() {
877: var pickedCourse = document.roles.dccourse.value
878: var pickedDomain = document.roles.dcdomain.value
879: if (document.roles.dcdomain.value == document.roles.origdom.value) {
880: if (pickedCourse != '') {
881: var courseTarget = "cc./"+pickedDomain+"/"+pickedCourse
882: document.roles.elements[0].value = 1
883: document.roles.elements[0].name = courseTarget
884: document.roles.selectrole.value = 1
885: document.roles.submit()
886: }
887: else {
888: alert("You must use the 'Select Course' link to open a separate pick course window which you can use to select the course you wish to enter");
889: }
890: }
891: else {
892: alert("You can only use this screen to select courses in the current domain")
893: }
894: }
895: </script>
896: END
897: my $courseform=&Apache::loncommon::selectcourse_link
898: ('roles','dccourse','dcdomain','coursedesc');
899: $r->print($cb_jscript.$verify_script);
900: my $formaction='/adm/roles';
901: $formaction=~s/\/+/\//g;
902: my $crs;
903: &select_recent_courses($r,$dcdom,$then,$now);
904: $r->print('<br /><form name="roles" method="post" action="'.$formaction.'" />');
905: $r->print('<h3>'.&mt('Choose a course from domain').': '.$dcdom.'</h3><font size="+1">'.$courseform.'</font><br /><br />'.
906: '<input type="hidden" name="chosencourse" value=""/>'.
907: 'Course Title: <input type="text" size="20" name="coursedesc" value=""><br />'.
908: 'Course ID: <input type="text" size="15" name="dccourse" />'.
909: '<input type="hidden" name="dcdomain" value="'.$dcdom.'" />'.
910: '<input type="hidden" name="origdom" value="'.$dcdom.'" />'.
911: '<input type="hidden" name="selectrole" value="" />'.
912: '<br /><br /><input type="button" name="proceed" value="'.&mt('Enter this course').'" onClick="verifyCoursePick()" />'.
913: '</form>');
914: return;
915: }
916:
917: sub select_recent_courses {
918: my ($r,$dcdom,$then,$now)=@_;
919: my $advanced = $ENV{'user.adv'};
920: my $tryagain = $ENV{'form.tryagain'};
921: my %recent=&Apache::lonnet::dump(&recent_filename('cc_pickby_dc_'.$dcdom));
922: my $numrecent = 0;
923: my $roletext = '<h3>'.&mt('Enter a recently visited course').'</h3>'.
924: '<form name="rolechoice" action="/adm/roles" method="post">'.
925: '<table><tr><th> </th>'.
926: '<th>'.&mt('User Role').'</th><th colspan=2>'.&mt('Extent').
927: '</th><th>'.&mt('Start').'</th><th>'.&mt('End').'</th><th>'.
928: &mt('Remarks and Calendar Announcements').'</th></tr>'."\n".
929: '<tr bgcolor="#BBffBB">'.
930: '<td align="center" colspan="7">'.
931: &mt('Domain').' - '.&mt('Recent courses accessed in this domain').
932: '</td></tr>'."\n";
933: foreach my $courseid (sort keys %recent) {
934: unless ($courseid =~/^error\:/) {
935: my ($dom,$crs) = split/_/,$courseid;
936: if ($dom eq $dcdom) {
937: $numrecent ++;
938: my $crskey = 'user.role.cc./'.$dom.'/'.$crs;
939: my ($where,$trolecode,$role,$tstatus,$tend,$tstart,$tbg,$tfont,$tremark,$inrole,$tpstart,$tpend);
940: my $button = 1;
941: &role_status($crskey,$then,$now,\$role,\$where,\$trolecode,\$tstatus,\$tstart,\$tend);
942: if ($tstart) {
943: $tpstart=&Apache::lonlocal::locallocaltime($tstart);
944: }
945: if ($tend) {
946: $tpend=&Apache::lonlocal::locallocaltime($tend);
947: }
948: my $ttype = &mt('Course');
949: my $twhere;
950: if ($ENV{'course.'.$courseid.'.description'}) {
951: $twhere=$ENV{'course.'.$courseid.'.description'};
952: }
953: my ($tdom,$trest,$tsection)=
954: split(/\//,Apache::lonnet::declutter($where));
955: if ($ENV{'request.role'} eq $trolecode) {
956: $tstatus='selected';
957: }
958: if ($tstatus eq 'is') {
959: $tbg='#77FF77';
960: $tfont='#003300';
961: } elsif ($tstatus eq 'future') {
962: $tbg='#FFFF77';
963: $button=0;
964: } elsif ($tstatus eq 'will') {
965: $tbg='#FFAA77';
966: $tremark.=&mt('Active at next login. ');
967: } elsif ($tstatus eq 'expired') {
968: $tbg='#FF7777';
969: $tfont='#330000';
970: $button=0;
971: } elsif ($tstatus eq 'will_not') {
972: $tbg='#AAFF77';
973: $tremark.=&mt('Expired after logout. ');
974: } elsif ($tstatus eq 'selected') {
975: $tbg='#11CC55';
976: $tfont='#002200';
977: $inrole=1;
978: $tremark.=&mt('Currently selected. ');
979: }
980: my $trole=Apache::lonnet::plaintext($role);
981: $roletext.='<tr bgcolor='.$tbg.'>';
982: if (!$button) {
983: $roletext.=('<td> </td>');
984: } elsif ($tstatus eq 'is') {
985: $roletext.=('<td><input type=submit value="'.
986: &mt('Select').'" name="'.
987: $trolecode.'"></td>');
988: } elsif ($tryagain) {
989: $roletext.=
990: '<td><input type=submit value="'.
991: &mt('Try Selecting Again').'" name="'.$trolecode.'"></td>';
992: } elsif ($advanced) {
993: $roletext.=
994: '<td><input type=submit value="'.
995: &mt('Re-Initialize').'" name="'.$trolecode.'"></td>';
996: } else {
997: $roletext.='<td> </td>';
998: }
999: $tremark.=&Apache::lonannounce::showday(time,1,
1000: &Apache::lonannounce::readcalendar($tdom.'_'.$trest));
1001:
1002: $roletext.='<td><font color="'.$tfont.'">'.$trole.
1003: '</font></td><td><font color="'.$tfont.'">'.$ttype.
1004: '</font></td><td><font color="'.$tfont.'">'.$twhere.
1005: '</font></td><td><font color="'.$tfont.'">'.$tpstart.
1006: '</font></td><td><font color="'.$tfont.'">'.$tpend.
1007: '</font></td><td><font color="'.$tfont.'">'.$tremark.
1008: ' </font></td></tr>'."\n";
1009: }
1010: }
1011: }
1012: if ($numrecent > 0) {
1013: $r->print($roletext.'</table><input type="hidden" '.
1014: 'name="selectrole" value="1" /></form>'."\n");
1015: }
1016: }
1017:
1018: sub recent_filename {
1019: my $area=shift;
1020: return 'nohist_recent_'.&Apache::lonnet::escape($area);
1021: }
1022:
1023: 1;
1024: __END__
1025:
1026: =head1 NAME
1027:
1028: Apache::lonroles - User Roles Screen
1029:
1030: =head1 SYNOPSIS
1031:
1032: Invoked by /etc/httpd/conf/srm.conf:
1033:
1034: <Location /adm/roles>
1035: PerlAccessHandler Apache::lonacc
1036: SetHandler perl-script
1037: PerlHandler Apache::lonroles
1038: ErrorDocument 403 /adm/login
1039: ErrorDocument 500 /adm/errorhandler
1040: </Location>
1041:
1042: =head1 OVERVIEW
1043:
1044: =head2 Choosing Roles
1045:
1046: C<lonroles> is a handler that allows a user to switch roles in
1047: mid-session. LON-CAPA attempts to work with "No Role Specified", the
1048: default role that a user has before selecting a role, as widely as
1049: possible, but certain handlers for example need specification which
1050: course they should act on, etc. Both in this scenario, and when the
1051: handler determines via C<lonnet>'s C<&allowed> function that a certain
1052: action is not allowed, C<lonroles> is used as error handler. This
1053: allows the user to select another role which may have permission to do
1054: what they were trying to do. C<lonroles> can also be accessed via the
1055: B<CRS> button in the Remote Control.
1056:
1057: =begin latex
1058:
1059: \begin{figure}
1060: \begin{center}
1061: \includegraphics[width=0.45\paperwidth,keepaspectratio]{Sample_Roles_Screen}
1062: \caption{\label{Sample_Roles_Screen}Sample Roles Screen}
1063: \end{center}
1064: \end{figure}
1065:
1066: =end latex
1067:
1068: =head2 Role Initialization
1069:
1070: 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.
1071:
1072: =head1 INTRODUCTION
1073:
1074: This module enables a user to select what role he wishes to
1075: operate under (instructor, student, teaching assistant, course
1076: coordinator, etc). These roles are pre-established by the actions
1077: of upper-level users.
1078:
1079: This is part of the LearningOnline Network with CAPA project
1080: described at http://www.lon-capa.org.
1081:
1082: =head1 HANDLER SUBROUTINE
1083:
1084: This routine is called by Apache and mod_perl.
1085:
1086: =over 4
1087:
1088: =item *
1089:
1090: Roles Initialization (yes/no)
1091:
1092: =item *
1093:
1094: Get Error Message from Environment
1095:
1096: =item *
1097:
1098: Who is this?
1099:
1100: =item *
1101:
1102: Generate Page Output
1103:
1104: =item *
1105:
1106: Choice or no choice
1107:
1108: =item *
1109:
1110: Table
1111:
1112: =item *
1113:
1114: Privileges
1115:
1116: =back
1117:
1118: =cut
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