File:
[LON-CAPA] /
loncom /
auth /
lonroles.pm
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1.203:
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Wed Jul 30 15:34:34 2008 UTC (16 years ago) by
raeburn
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CVS tags:
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- For bug 3987. lonroles.pm will accept a destsymb form item, encode it and append it to the destinationurl.
- Intended to support linking to a specific resource in a course from outside LON-CAPA.
- Login page and SSO need to preserve an appropriate query string for the call to /adm/roles after authentication and session initialization.
1: # The LearningOnline Network with CAPA
2: # User Roles Screen
3: #
4: # $Id: lonroles.pm,v 1.203 2008/07/30 15:34:34 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: use Apache::lonpageflip();
43: use Apache::lonnavdisplay();
44: use GDBM_File;
45: use LONCAPA qw(:DEFAULT :match);
46: use HTML::Entities;
47:
48:
49: sub redirect_user {
50: my ($r,$title,$url,$msg,$launch_nav) = @_;
51: $msg = $title if (! defined($msg));
52: &Apache::loncommon::content_type($r,'text/html');
53: &Apache::loncommon::no_cache($r);
54: $r->send_http_header;
55: my $swinfo=&Apache::lonmenu::rawconfig();
56: my $navwindow;
57: if ($launch_nav eq 'on') {
58: $navwindow.=&Apache::lonnavdisplay::launch_win('now',undef,undef,
59: ($url =~ m-^/adm/whatsnew-));
60: } else {
61: $navwindow.=&Apache::lonnavmaps::close();
62: }
63: my $start_page = &Apache::loncommon::start_page('Switching Role',undef,
64: {'redirect' => [1,$url],});
65: my $end_page = &Apache::loncommon::end_page();
66:
67: # Note to style police:
68: # This must only replace the spaces, nothing else, or it bombs elsewhere.
69: $url=~s/ /\%20/g;
70: $r->print(<<ENDREDIR);
71: $start_page
72: <script type="text/javascript">
73: $swinfo
74: </script>
75: $navwindow
76: <h1>$msg</h1>
77: $end_page
78: ENDREDIR
79: return;
80: }
81:
82: sub error_page {
83: my ($r,$error,$dest)=@_;
84: &Apache::loncommon::content_type($r,'text/html');
85: &Apache::loncommon::no_cache($r);
86: $r->send_http_header;
87: return OK if $r->header_only;
88: $r->print(&Apache::loncommon::start_page('Problems during Course Initialization').
89: '<script type="text/javascript">'.
90: &Apache::lonmenu::rawconfig().'</script>'.
91: '<p>'.&mt('The following problems occurred:').
92: $error.
93: '</p><br /><a href="'.$dest.'">'.&mt('Continue').'</a>'.
94: &Apache::loncommon::end_page());
95: }
96:
97: sub handler {
98:
99: my $r = shift;
100:
101: my $now=time;
102: my $then=$env{'user.login.time'};
103: my $envkey;
104: my %dcroles = ();
105: my $numdc = &check_fordc(\%dcroles,$then);
106: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'});
107:
108: # ================================================================== Roles Init
109: if ($env{'form.selectrole'}) {
110:
111: my $locknum=&Apache::lonnet::get_locks();
112: if ($locknum) { return 409; }
113:
114: if ($env{'form.newrole'}) {
115: $env{'form.'.$env{'form.newrole'}}=1;
116: }
117: if ($env{'request.course.id'}) {
118: # Check if user is CC trying to select a course role
119: if ($env{'form.switchrole'}) {
120: if (!defined($env{'user.role.'.$env{'form.switchrole'}})) {
121: &adhoc_course_role($then);
122: }
123: }
124: my %temp=('logout_'.$env{'request.course.id'} => time);
125: &Apache::lonnet::put('email_status',\%temp);
126: &Apache::lonnet::delenv('user.state.'.$env{'request.course.id'});
127: }
128: &Apache::lonnet::appenv({"request.course.id" => '',
129: "request.course.fn" => '',
130: "request.course.uri" => '',
131: "request.course.sec" => '',
132: "request.role" => 'cm',
133: "request.role.adv" => $env{'user.adv'},
134: "request.role.domain" => $env{'user.domain'}});
135: # Check if user is a DC trying to enter a course or author space and needs privs to be created
136: if ($numdc > 0) {
137: foreach my $envkey (keys %env) {
138: # Is this an ad-hoc CC-role?
139: if (my ($domain,$coursenum) =
140: ($envkey =~ m-^form\.cc\./($match_domain)/($match_courseid)$-)) {
141: if ($dcroles{$domain}) {
142: &check_privs($domain,$coursenum,$then,$now,'cc');
143: }
144: last;
145: }
146: # Is this an ad-hoc CA-role?
147: if (my ($domain,$user) =
148: ($envkey =~ m-^form\.ca\./($match_domain)/($match_username)$-)) {
149: # Check if author blocked ca-access
150: my %blocked=&Apache::lonnet::get('environment',['domcoord.author'],$domain,$user);
151: if ($blocked{'domcoord.author'} eq 'blocked') {
152: delete($env{$envkey});
153: $env{'user.error.msg'}=':::1:User '.$user.' in domain '.$domain.' blocked domain coordinator access';
154: last;
155: }
156: if ($dcroles{$domain}) {
157: my ($server_status,$home) = &check_author_homeserver($user,$domain);
158: if (($server_status eq 'ok') || ($server_status eq 'switchserver')) {
159: &check_privs($domain,$user,$then,$now,'ca');
160: if ($server_status eq 'switchserver') {
161: my $trolecode = 'ca./'.$domain.'/'.$user;
162: my $switchserver = '/adm/switchserver?'
163: .'otherserver='.$home.'&role='.$trolecode;
164: $r->internal_redirect($switchserver);
165: }
166: } else {
167: delete($env{$envkey});
168: }
169: } else {
170: delete($env{$envkey});
171: }
172: last;
173: }
174: }
175: }
176:
177: foreach $envkey (keys %env) {
178: next if ($envkey!~/^user\.role\./);
179: my ($where,$trolecode,$role,$tstatus,$tend,$tstart);
180: &role_status($envkey,$then,$now,\$role,\$where,\$trolecode,\$tstatus,\$tstart,\$tend);
181: if ($env{'form.'.$trolecode}) {
182: if ($tstatus eq 'is') {
183: $where=~s/^\///;
184: my ($cdom,$cnum,$csec)=split(/\//,$where);
185: # check for course groups
186: my %coursegroups = &Apache::lonnet::get_active_groups(
187: $env{'user.domain'},$env{'user.name'},$cdom, $cnum);
188: my $cgrps = join(':',keys(%coursegroups));
189:
190: # store role if recent_role list being kept
191: if ($env{'environment.recentroles'}) {
192: my %frozen_roles =
193: &Apache::lonhtmlcommon::get_recent_frozen('roles',$env{'environment.recentrolesn'});
194: &Apache::lonhtmlcommon::store_recent('roles',
195: $trolecode,' ',$frozen_roles{$trolecode});
196: }
197:
198:
199: # check for keyed access
200: if (($role eq 'st') &&
201: ($env{'course.'.$cdom.'_'.$cnum.'.keyaccess'} eq 'yes')) {
202: # who is key authority?
203: my $authdom=$cdom;
204: my $authnum=$cnum;
205: if ($env{'course.'.$cdom.'_'.$cnum.'.keyauth'}) {
206: ($authnum,$authdom)=
207: split(/:/,$env{'course.'.$cdom.'_'.$cnum.'.keyauth'});
208: }
209: # check with key authority
210: unless (&Apache::lonnet::validate_access_key(
211: $env{'environment.key.'.$cdom.'_'.$cnum},
212: $authdom,$authnum)) {
213: # there is no valid key
214: if ($env{'form.newkey'}) {
215: # student attempts to register a new key
216: &Apache::loncommon::content_type($r,'text/html');
217: &Apache::loncommon::no_cache($r);
218: $r->send_http_header;
219: my $swinfo=&Apache::lonmenu::rawconfig();
220: my $start_page=&Apache::loncommon::start_page
221: ('Verifying Access Key to Unlock this Course');
222: my $end_page=&Apache::loncommon::end_page();
223: my $buttontext=&mt('Enter Course');
224: my $message=&mt('Successfully registered key');
225: my $assignresult=
226: &Apache::lonnet::assign_access_key(
227: $env{'form.newkey'},
228: $authdom,$authnum,
229: $cdom,$cnum,
230: $env{'user.domain'},
231: $env{'user.name'},
232: 'Assigned from '.$ENV{'REMOTE_ADDR'}.' at '.localtime().' for '.
233: $trolecode);
234: unless ($assignresult eq 'ok') {
235: $assignresult=~s/^error\:\s*//;
236: $message=&mt($assignresult).
237: '<br /><a href="/adm/logout">'.
238: &mt('Logout').'</a>';
239: $buttontext=&mt('Re-Enter Key');
240: }
241: $r->print(<<ENDENTEREDKEY);
242: $start_page
243: <script type="text/javascript">
244: $swinfo
245: </script>
246: <form method="post">
247: <input type="hidden" name="selectrole" value="1" />
248: <input type="hidden" name="$trolecode" value="1" />
249: <font size="+2">$message</font><br />
250: <input type="submit" value="$buttontext" />
251: </form>
252: $end_page
253: ENDENTEREDKEY
254: return OK;
255: } else {
256: # print form to enter a new key
257: &Apache::loncommon::content_type($r,'text/html');
258: &Apache::loncommon::no_cache($r);
259: $r->send_http_header;
260: my $swinfo=&Apache::lonmenu::rawconfig();
261: my $start_page=&Apache::loncommon::start_page
262: ('Enter Access Key to Unlock this Course');
263: my $end_page=&Apache::loncommon::end_page();
264: $r->print(<<ENDENTERKEY);
265: $start_page
266: <script type="text/javascript">
267: $swinfo
268: </script>
269: <form method="post">
270: <input type="hidden" name="selectrole" value="1" />
271: <input type="hidden" name="$trolecode" value="1" />
272: <input type="text" size="20" name="newkey" value="$env{'form.newkey'}" />
273: <input type="submit" value="Enter key" />
274: </form>
275: $end_page
276: ENDENTERKEY
277: return OK;
278: }
279: }
280: }
281: &Apache::lonnet::log($env{'user.domain'},
282: $env{'user.name'},
283: $env{'user.home'},
284: "Role ".$trolecode);
285:
286: &Apache::lonnet::appenv(
287: {'request.role' => $trolecode,
288: 'request.role.domain' => $cdom,
289: 'request.course.sec' => $csec,
290: 'request.course.groups' => $cgrps});
291: my $tadv=0;
292:
293: if (($cnum) && ($role ne 'ca') && ($role ne 'aa')) {
294: my $msg;
295: my ($furl,$ferr)=
296: &Apache::lonuserstate::readmap($cdom.'/'.$cnum);
297: if (($env{'form.orgurl'}) &&
298: ($env{'form.orgurl'}!~/^\/adm\/flip/)) {
299: my $dest=$env{'form.orgurl'};
300: if (&Apache::lonnet::allowed('adv') eq 'F') { $tadv=1; }
301: &Apache::lonnet::appenv({'request.role.adv'=>$tadv});
302: if (($ferr) && ($tadv)) {
303: &error_page($r,$ferr,$dest);
304: } else {
305: $r->internal_redirect($dest);
306: }
307: return OK;
308: } else {
309: if (!$env{'request.course.id'}) {
310: &Apache::lonnet::appenv(
311: {"request.course.id" => $cdom.'_'.$cnum});
312: $furl='/adm/roles?tryagain=1';
313: $msg=
314: '<h1><span class="LC_error">'.
315: &mt('Could not initialize [_1] at this time.',
316: $env{'course.'.$cdom.'_'.$cnum.'.description'}).
317: '</span></h1><h3>'.&mt('Please try again.').'</h3>'.$ferr;
318: }
319: if (&Apache::lonnet::allowed('adv') eq 'F') { $tadv=1; }
320: &Apache::lonnet::appenv({'request.role.adv'=>$tadv});
321:
322: if (($ferr) && ($tadv)) {
323: &error_page($r,$ferr,$furl);
324: } else {
325: # Check to see if the user is a CC entering a course
326: # for the first time
327: my (undef, undef, $role, $courseid) = split(/\./, $envkey);
328: if (substr($courseid, 0, 1) eq '/') {
329: $courseid = substr($courseid, 1);
330: }
331: $courseid =~ s/\//_/;
332: if ($role eq 'cc' && $env{'course.' . $courseid .
333: '.course.helper.not.run'}) {
334: $furl = "/adm/helper/course.initialization.helper";
335: # Send the user to the course they selected
336: } elsif ($env{'request.course.id'}) {
337: if ($env{'form.destinationurl'}) {
338: my $dest = $env{'form.destinationurl'};
339: if ($env{'form.destsymb'} ne '') {
340: my $esc_symb = &HTML::Entities::encode($env{'form.destsymb'},'"<>&');
341: $dest .= '?symb='.$esc_symb;
342: }
343: &redirect_user($r,&mt('Entering [_1]',
344: $env{'course.'.$courseid.'.description'}),
345: $dest,$msg,
346: $env{'environment.remotenavmap'});
347: return OK;
348: }
349: if (&Apache::lonnet::allowed('whn',
350: $env{'request.course.id'})
351: || &Apache::lonnet::allowed('whn',
352: $env{'request.course.id'}.'/'
353: .$env{'request.course.sec'})
354: ) {
355: my $startpage = &courseloadpage($courseid);
356: unless ($startpage eq 'firstres') {
357: $msg = &mt('Entering [_1] ....',
358: $env{'course.'.$courseid.'.description'});
359: &redirect_user($r,&mt('New in course'),
360: '/adm/whatsnew?refpage=start',$msg,
361: $env{'environment.remotenavmap'});
362: return OK;
363: }
364: }
365: }
366: # Are we allowed to look at the first resource?
367: if ($furl !~ m|^/adm/|) {
368: # Guess not ...
369: $furl=&Apache::lonpageflip::first_accessible_resource();
370: }
371: $msg = &mt('Entering [_1] ...',
372: $env{'course.'.$courseid.'.description'});
373: &redirect_user($r,&mt('Entering [_1]',
374: $env{'course.'.$courseid.'.description'}),
375: $furl,$msg,
376: $env{'environment.remotenavmap'});
377: }
378: return OK;
379: }
380: }
381: #
382: # Send the user to the construction space they selected
383: if ($role =~ /^(au|ca|aa)$/) {
384: my $redirect_url = '/priv/';
385: if ($role eq 'au') {
386: $redirect_url.=$env{'user.name'};
387: } else {
388: $where =~ /\/(.*)$/;
389: $redirect_url .= $1;
390: }
391: $redirect_url .= '/';
392: &redirect_user($r,&mt('Entering Construction Space'),
393: $redirect_url);
394: return OK;
395: }
396: if ($role eq 'dc') {
397: my $redirect_url = '/adm/menu/';
398: &redirect_user($r,&mt('Loading Domain Coordinator Menu'),
399: $redirect_url);
400: return OK;
401: }
402: }
403: }
404: }
405: }
406:
407:
408: # =============================================================== No Roles Init
409:
410: &Apache::loncommon::content_type($r,'text/html');
411: &Apache::loncommon::no_cache($r);
412: $r->send_http_header;
413: return OK if $r->header_only;
414:
415: my $swinfo=&Apache::lonmenu::rawconfig();
416: my $start_page=&Apache::loncommon::start_page('User Roles');
417: my $standby=&mt('Role selected. Please stand by.');
418: $standby=~s/\n/\\n/g;
419: my $noscript='<span class="LC_error">'.&mt('Use of LON-CAPA requires Javascript to be enabled in your web browser.').'<br />'.&mt('As this is not the case, most functionality in the system will be unavailable.').'</span><br />';
420:
421: $r->print(<<ENDHEADER);
422: $start_page
423: <br />
424: <noscript>
425: $noscript
426: </noscript>
427: <script type="text/javascript">
428: $swinfo
429: window.focus();
430:
431: active=true;
432:
433: function enterrole (thisform,rolecode,buttonname) {
434: if (active) {
435: active=false;
436: document.title='$standby';
437: window.status='$standby';
438: thisform.newrole.value=rolecode;
439: thisform.submit();
440: } else {
441: alert('$standby');
442: }
443: }
444: </script>
445: ENDHEADER
446:
447: # ------------------------------------------ Get Error Message from Environment
448:
449: my ($fn,$priv,$nochoose,$error,$msg)=split(/:/,$env{'user.error.msg'});
450: if ($env{'user.error.msg'}) {
451: $r->log_reason(
452: "$msg for $env{'user.name'} domain $env{'user.domain'} access $priv",$fn);
453: }
454:
455: # ------------------------------------------------- Can this user re-init, etc?
456:
457: my $advanced=$env{'user.adv'};
458: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},['tryagain']);
459: my $tryagain=$env{'form.tryagain'};
460:
461: # -------------------------------------------------------- Generate Page Output
462: # --------------------------------------------------------------- Error Header?
463: if ($error) {
464: $r->print("<h1>".&mt('LON-CAPA Access Control')."</h1>");
465: $r->print("<!-- LONCAPAACCESSCONTROLERRORSCREEN --><hr /><pre>");
466: if ($priv ne '') {
467: $r->print(&mt('Access : ').&Apache::lonnet::plaintext($priv)."\n");
468: }
469: if ($fn ne '') {
470: $r->print(&mt('Resource: ').&Apache::lonenc::check_encrypt($fn)."\n");
471: }
472: if ($msg ne '') {
473: $r->print(&mt('Action : ').$msg."\n");
474: }
475: $r->print("</pre><hr />");
476: my $url=$fn;
477: my $last;
478: if (tie(my %hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
479: &GDBM_READER(),0640)) {
480: $last=$hash{'last_known'};
481: untie(%hash);
482: }
483: if ($last) { $fn.='?symb='.&escape($last); }
484:
485: &Apache::londocs::changewarning($r,undef,'You have modified your course recently, [_1] may fix this access problem.',
486: &Apache::lonenc::check_encrypt($fn));
487: } else {
488: if ($env{'user.error.msg'}) {
489: $r->print(
490: '<h3><span class="LC_error">'.
491: &mt('You need to choose another user role or enter a specific course for this function').'</span></h3>');
492: }
493: }
494: # -------------------------------------------------------- Choice or no choice?
495: if ($nochoose) {
496: $r->print("<h2>".&mt('Sorry ...')."</h2>\n<span class='LC_error'>".
497: &mt('This action is currently not authorized.').'</span>'.
498: &Apache::loncommon::end_page());
499: return OK;
500: } else {
501: if (($ENV{'REDIRECT_QUERY_STRING'}) && ($fn)) {
502: $fn.='?'.$ENV{'REDIRECT_QUERY_STRING'};
503: }
504: $r->print('<form method="post" name="rolechoice" action="'.(($fn)?$fn:$r->uri).'">');
505: $r->print('<input type="hidden" name="orgurl" value="'.$fn.'" />');
506: $r->print('<input type="hidden" name="selectrole" value="1" />');
507: $r->print('<input type="hidden" name="newrole" value="" />');
508: }
509: my (%roletext,%sortrole,%roleclass);
510: my $countactive=0;
511: my $countfuture=0;
512: my $countwill=0;
513: my $inrole=0;
514: my $possiblerole='';
515: my %futureroles;
516: my %roles_nextlogin;
517: foreach $envkey (sort keys %env) {
518: my $button = 1;
519: my $switchserver='';
520: my $roletext;
521: my $sortkey;
522: if ($envkey=~/^user\.role\./) {
523: my ($role,$where,$trolecode,$tstart,$tend,$tremark,$tstatus,$tpstart,$tpend,$tfont);
524: &role_status($envkey,$then,$now,\$role,\$where,\$trolecode,\$tstatus,\$tstart,\$tend);
525: next if (!defined($role) || $role eq '' || $role =~ /^gr/);
526: $tremark='';
527: $tpstart=' ';
528: $tpend=' ';
529: $tfont='#000000';
530: if ($tstart) {
531: $tpstart=&Apache::lonlocal::locallocaltime($tstart);
532: }
533: if ($tend) {
534: $tpend=&Apache::lonlocal::locallocaltime($tend);
535: }
536: if ($env{'request.role'} eq $trolecode) {
537: $tstatus='selected';
538: }
539: my $tbg;
540: if (($tstatus eq 'is')
541: || ($tstatus eq 'selected')
542: || ($tstatus eq 'will')
543: || ($tstatus eq 'future')
544: || ($env{'form.showall'})) {
545: if ($tstatus eq 'is') {
546: $tbg='#77FF77';
547: $tfont='#003300';
548: $possiblerole=$trolecode;
549: $countactive++;
550: } elsif ($tstatus eq 'future') {
551: $tbg='#FFFF77';
552: $button=0;
553: $futureroles{$trolecode} = $tstart.':'.$tend;
554: $countfuture ++;
555: } elsif ($tstatus eq 'will') {
556: $tbg='#FFAA77';
557: $tremark.=&mt('Active at next login. ');
558: $roles_nextlogin{$trolecode} = $tstart.':'.$tend;
559: $countwill ++;
560: } elsif ($tstatus eq 'expired') {
561: $tbg='#FF7777';
562: $tfont='#330000';
563: $button=0;
564: } elsif ($tstatus eq 'will_not') {
565: $tbg='#AAFF77';
566: $tremark.=&mt('Expired after logout. ');
567: } elsif ($tstatus eq 'selected') {
568: $tbg='#11CC55';
569: $tfont='#002200';
570: $inrole=1;
571: $countactive++;
572: $tremark.=&mt('Currently selected. ');
573: }
574: my $trole;
575: if ($role =~ /^cr\//) {
576: my ($rdummy,$rdomain,$rauthor,$rrole)=split(/\//,$role);
577: if ($tremark) { $tremark.='<br />'; }
578: $tremark.=&mt('Defined by ').$rauthor.
579: &mt(' at ').$rdomain.'.';
580: }
581: $trole=Apache::lonnet::plaintext($role);
582: my $ttype;
583: my $twhere;
584: my ($tdom,$trest,$tsection)=
585: split(/\//,Apache::lonnet::declutter($where));
586: # First, Co-Authorship roles
587: if (($role eq 'ca') || ($role eq 'aa')) {
588: my $home = &Apache::lonnet::homeserver($trest,$tdom);
589: my $allowed=0;
590: my @ids=&Apache::lonnet::current_machine_ids();
591: foreach my $id (@ids) { if ($id eq $home) { $allowed=1; } }
592: if (!$allowed) {
593: $button=0;
594: $switchserver='otherserver='.$home.'&role='.$trolecode;
595: }
596: #next if ($home eq 'no_host');
597: $home = &Apache::lonnet::hostname($home);
598: $ttype='Construction Space';
599: $twhere=&mt('User').': '.$trest.'<br />'.&mt('Domain').
600: ': '.$tdom.'<br />'.
601: ' '.&mt('Server').': '.$home;
602: $env{'course.'.$tdom.'_'.$trest.'.description'}='ca';
603: $tremark.=&Apache::lonhtmlcommon::authorbombs('/res/'.$tdom.'/'.$trest.'/');
604: $sortkey=$role."$trest:$tdom";
605: } elsif ($role eq 'au') {
606: # Authors
607: my $home = &Apache::lonnet::homeserver
608: ($env{'user.name'},$env{'user.domain'});
609: my $allowed=0;
610: my @ids=&Apache::lonnet::current_machine_ids();
611: foreach my $id (@ids) { if ($id eq $home) { $allowed=1; } }
612: if (!$allowed) {
613: $button=0;
614: $switchserver='otherserver='.$home.'&role='.$trolecode;
615: }
616: #next if ($home eq 'no_host');
617: $home = &Apache::lonnet::hostname($home);
618: $ttype='Construction Space';
619: $twhere=&mt('Domain').': '.$tdom.'<br />'.&mt('Server').
620: ': '.$home;
621: $env{'course.'.$tdom.'_'.$trest.'.description'}='ca';
622: $tremark.=&Apache::lonhtmlcommon::authorbombs('/res/'.$tdom.'/'.$env{'user.name'}.'/');
623: $sortkey=$role;
624: } elsif ($trest) {
625: my $tcourseid=$tdom.'_'.$trest;
626: $ttype = &Apache::loncommon::course_type($tcourseid);
627: $trole = &Apache::lonnet::plaintext($role,$ttype);
628: if ($env{'course.'.$tcourseid.'.description'}) {
629: $twhere=$env{'course.'.$tcourseid.'.description'};
630: $sortkey=$role."\0".$tdom."\0".$twhere."\0".$envkey;
631: unless ($twhere eq &mt('Currently not available')) {
632: $twhere.=' <font size="-2">'.
633: &Apache::loncommon::syllabuswrapper(&mt('Syllabus'),$trest,$tdom,$tfont).
634: '</font>';
635: }
636: } else {
637: my %newhash=&Apache::lonnet::coursedescription($tcourseid);
638: if (%newhash) {
639: $sortkey=$role."\0".$tdom."\0".$newhash{'description'}.
640: "\0".$envkey;
641: $twhere=$newhash{'description'}.
642: ' <font size="-2">'.
643: &Apache::loncommon::syllabuswrapper(&mt('Syllabus'),$trest,$tdom,$tfont).
644: '</font>';
645: $ttype = $newhash{'type'};
646: $trole = &Apache::lonnet::plaintext($role,$ttype);
647: } else {
648: $twhere=&mt('Currently not available');
649: $env{'course.'.$tcourseid.'.description'}=$twhere;
650: $sortkey=$role."\0".$tdom."\0".$twhere."\0".$envkey;
651: $ttype = 'Unavailable';
652: }
653: }
654: if ($tsection) {
655: $twhere.='<br />'.&mt('Section').': '.$tsection;
656: }
657: if ($role ne 'st') { $twhere.="<br />".&mt('Domain').":".$tdom; }
658: } elsif ($tdom) {
659: $ttype='Domain';
660: $twhere=$tdom;
661: $sortkey=$role.$twhere;
662: } else {
663: $ttype='System';
664: $twhere=&mt('system wide');
665: $sortkey=$role.$twhere;
666: }
667: $roletext.=&build_roletext($trolecode,$tdom,$trest,$tstatus,$tryagain,$advanced,$tremark,$tbg,$tfont,$trole,$twhere,$tpstart,$tpend,$nochoose,$button,$switchserver);
668: $roletext{$envkey}=$roletext;
669: if (!$sortkey) {$sortkey=$twhere."\0".$envkey;}
670: $sortrole{$sortkey}=$envkey;
671: $roleclass{$envkey}=$ttype;
672: }
673: }
674: }
675: if ($env{'user.adv'}) {
676: $r->print(
677: '<br /><span class="LC_rolesinfo"><label>'.&mt('Show all roles').': <input type="checkbox" name="showall"');
678: if ($env{'form.showall'}) { $r->print(' checked="checked" '); }
679: $r->print(' /></label><input type="submit" value="'.&mt('Display').'" /></span>');
680: } else {
681: if ($countactive > 0) {
682: my $domdesc = &Apache::lonnet::domain($env{'user.domain'},'description');
683: my $esc_dom = &HTML::Entities::encode($env{'user.domain'},'"<>&');
684: $r->print('<p>'.&mt('[_1]Visit the [_2]Course Catalog[_3] to view all [_4] LON-CAPA courses.','<b>','<a href="/adm/coursecatalog?showdom='.$esc_dom.'">','</a></b>',$domdesc).'<br />'.&mt('If a course is [_1]not[_2] in your list of current courses below, you may be able to enroll if self-enrollment is permitted.','<b>','</b>').'</p>');
685: }
686: }
687:
688: # No active roles
689: if ($countactive==0) {
690: if ($inrole) {
691: $r->print('<h2>'.&mt('Currently no additional roles or courses').'</h2>');
692: } else {
693: $r->print('<h2>'.&mt('Currently no active roles or courses').'</h2>');
694: }
695: &findcourse_advice($r);
696: $r->print('</form>');
697: if ($countfuture) {
698: $r->print(&mt('The following [quant,_1,role,roles] will become active in the future:',$countfuture));
699: my $doheaders = &roletable_headers($r,\%roleclass,\%sortrole,
700: $nochoose);
701: &print_rolerows($r,$doheaders,\%roleclass,\%sortrole,\%dcroles,
702: \%roletext);
703: my $tremark='';
704: my $tfont='#003300';
705: if ($env{'request.role'} eq 'cm') {
706: $r->print('<tr bgcolor="#11CC55">');
707: $tremark=&mt('Currently selected. ');
708: $tfont='#002200';
709: } else {
710: $r->print('<tr bgcolor="#77FF77">');
711: }
712: $r->print('<td></td><td colspan="3"><font color="'.$tfont.'"><span class="LC_rolesinfo">'.&mt('No role specified').
713: '</span></font></td><td><font color="'.$tfont.'">'.$tremark.
714: ' </font></td></tr>'."\n");
715:
716: $r->print('</table>');
717: }
718: $r->print(&Apache::loncommon::end_page());
719: return OK;
720: # Is there only one choice?
721: } elsif ($countactive==1) {
722: my $needs_switchserver;
723: if ($env{'user.author'}) {
724: $needs_switchserver = &check_needs_switchserver($possiblerole);
725: }
726: if ((!$needs_switchserver) && ($env{'request.role'} eq 'cm')) {
727: $r->print('<h3>'.&mt('Please stand by.').'</h3>'.
728: '<input type="hidden" name="'.$possiblerole.'" value="1" />'.
729: '<noscript><br /><input type="submit" name="submit" value="'.&mt('Continue').'" /></noscript>');
730: $r->print("</form>\n");
731: $r->rflush();
732: $r->print('<script type="text/javascript">document.forms.rolechoice.submit();</script>');
733: $r->print(&Apache::loncommon::end_page());
734: return OK;
735: }
736: if ($needs_switchserver) {
737: $r->print("<h2>".&mt('Server Switch Required')."</h2>\n".
738: &mt('Construction Space access is only available from '.
739: 'the home server of the corresponding Author.').'<br />'.
740: &mt("Click the 'Switch Server' link to go there.").'<br />');
741: }
742: }
743: # More than one possible role
744: # ----------------------------------------------------------------------- Table
745: unless ((!&Apache::lonmenu::show_course()) || ($nochoose) || ($countactive==1)) {
746: $r->print("<h2>".&mt('Select a Course to Enter')."</h2>\n");
747: }
748: my $doheaders = &roletable_headers($r,\%roleclass,\%sortrole,$nochoose);
749: if ($env{'environment.recentroles'}) {
750: my %recent_roles =
751: &Apache::lonhtmlcommon::get_recent('roles',$env{'environment.recentrolesn'});
752: my $output='';
753: foreach (sort(keys(%recent_roles))) {
754: if (defined($roletext{'user.role.'.$_})) {
755: $output.=$roletext{'user.role.'.$_};
756: if ($_ =~ m-dc\./($match_domain)/-
757: && $dcroles{$1}) {
758: $output .= &adhoc_roles_row($1,'recent');
759: }
760: } elsif ($numdc > 0) {
761: unless ($_ =~/^error\:/) {
762: $output.=&display_cc_role('user.role.'.$_);
763: }
764: }
765: }
766: if ($output) {
767: $r->print("<tr><td align='center' colspan='5'><font face='arial'>".
768: &mt('Recent Roles')."</font></td></tr>");
769: $r->print($output);
770: $doheaders ++;
771: }
772: }
773:
774: if ($numdc > 0) {
775: $r->print(&coursepick_jscript());
776: $r->print(&Apache::loncommon::coursebrowser_javascript().
777: &Apache::loncommon::authorbrowser_javascript());
778: }
779: &print_rolerows($r,$doheaders,\%roleclass,\%sortrole,\%dcroles,\%roletext);
780: if ($countactive > 1) {
781: my $tremark='';
782: my $tfont='#003300';
783: if ($env{'request.role'} eq 'cm') {
784: $r->print('<tr bgcolor="#11CC55">');
785: $tremark=&mt('Currently selected. ');
786: $tfont='#002200';
787: } else {
788: $r->print('<tr bgcolor="#77FF77">');
789: }
790: unless ($nochoose) {
791: if ($env{'request.role'} ne 'cm') {
792: $r->print('<td><input type="submit" value="'.
793: &mt('Select').'" name="cm" /></td>');
794: } else {
795: $r->print('<td> </td>');
796: }
797: }
798: $r->print('<td colspan="3"><font color="'.$tfont.'"><span class="LC_rolesinfo">'.&mt('No role specified').
799: '</span></font></td><td><font color="'.$tfont.'">'.$tremark.
800: ' </font></td></tr>'."\n");
801: }
802: $r->print('</table>');
803: unless ($nochoose) {
804: $r->print("</form>\n");
805: }
806: # ------------------------------------------------------------ Privileges Info
807: if (($advanced) && (($env{'user.error.msg'}) || ($error))) {
808: $r->print('<hr /><h2>Current Privileges</h2>');
809: $r->print(&privileges_info());
810: }
811: $r->print(&Apache::lonnet::getannounce());
812: if ($advanced) {
813: my $esc_dom = &HTML::Entities::encode($env{'user.domain'},'"<>&');
814: $r->print('<p><small><i>'
815: .&mt('This is LON-CAPA [_1]',$r->dir_config('lonVersion'))
816: .'</i><br />'
817: .'<a href="/adm/logout">'.&mt('Logout').'</a> '
818: .'<a href="/adm/coursecatalog?showdom='.$esc_dom.'">'
819: .&mt('Course Catalog')
820: .'</small></p>');
821: }
822: $r->print(&Apache::loncommon::end_page());
823: return OK;
824: }
825:
826: sub roletable_headers {
827: my ($r,$roleclass,$sortrole,$nochoose) = @_;
828: my $doheaders;
829: if ((ref($sortrole) eq 'HASH') && (ref($roleclass) eq 'HASH')) {
830: $r->print('<br /><table id="LC_rolesmenu"><tr>');
831: if (!$nochoose) { $r->print('<th> </th>'); }
832: $r->print('<th>'.&mt('User Role').'</th><th>'.&mt('Extent')
833: .'</th><th>'.&mt('Start').'</th><th>'.&mt('End')
834: .'</th></tr>'."\n");
835: $doheaders=-1;
836: my @roletypes = &roletypes();
837: foreach my $type (@roletypes) {
838: my $haverole=0;
839: foreach my $which (sort {uc($a) cmp uc($b)} (keys(%{$sortrole}))) {
840: if ($roleclass->{$sortrole->{$which}} =~ /^\Q$type\E/) {
841: $haverole=1;
842: }
843: }
844: if ($haverole) { $doheaders++; }
845: }
846: }
847: return $doheaders;
848: }
849:
850: sub roletypes {
851: my @types = ('Domain','Construction Space','Course','Unavailable','System');
852: return @types;
853: }
854:
855: sub print_rolerows {
856: my ($r,$doheaders,$roleclass,$sortrole,$dcroles,$roletext) = @_;
857: if ((ref($roleclass) eq 'HASH') && (ref($sortrole) eq 'HASH')) {
858: my @types = &roletypes();
859: foreach my $type (@types) {
860: my $output;
861: foreach my $which (sort {uc($a) cmp uc($b)} (keys(%{$sortrole}))) {
862: if ($roleclass->{$sortrole->{$which}} =~ /^\Q$type\E/) {
863: if (ref($roletext) eq 'HASH') {
864: $output.=$roletext->{$sortrole->{$which}};
865: if ($sortrole->{$which} =~ m-dc\./($match_domain)/-) {
866: if (ref($dcroles) eq 'HASH') {
867: if ($dcroles->{$1}) {
868: $output .= &adhoc_roles_row($1,'');
869: }
870: }
871: }
872: }
873: }
874: }
875: if ($output) {
876: if ($doheaders > 0) {
877: $r->print("<tr>".
878: "<td align='center' colspan='5'><font face='arial'>".
879: &mt($type)."</font></td></tr>");
880: }
881: $r->print($output);
882: }
883: }
884: }
885: }
886:
887: sub findcourse_advice {
888: my ($r) = @_;
889: my $domdesc = &Apache::lonnet::domain($env{'user.domain'},'description');
890: my $esc_dom = &HTML::Entities::encode($env{'user.domain'},'"<>&');
891: if (&Apache::lonnet::auto_run(undef,$env{'user.domain'})) {
892: $r->print(&mt('If you were expecting to see an active role listed for a particular course in the [_1] domain, it may be missing for one of the following reasons:',$domdesc).'
893: <ul>
894: <li>'.&mt('The course has yet to be created.').'</li>
895: <li>'.&mt('Automatic enrollment of registered students has not been enabled for the course.').'</li>
896: <li>'.&mt('You are in a section of course for which automatic enrollment in the corresponding LON-CAPA course is not active.').'</li>
897: <li>'.&mt('The start date for automated enrollment has yet to be reached.').'</li>
898: <li>'.&mt('You registered for the course recently and there is a time lag between the time you register, and the time this information becomes available for the update of LON-CAPA course rosters.').'</li>
899: </ul>');
900: } else {
901: $r->print(&mt('If you were expecting to see an active role listed for a particular course, that course may not have been created yet.').'<br />');
902: }
903: $r->print('<p>'.&mt('The [_1]Course Catalog[_2] provides information about all [_3] classes for which LON-CAPA courses have been created.','<a href="/adm/coursecatalog?showdom='.$esc_dom.'">','</a>',$domdesc).'<br />');
904: $r->print(&mt('You can search the course catalog for courses which permit self-enrollment, if you would like to enroll in a course.').'</p>');
905: return;
906: }
907:
908: sub privileges_info {
909: my ($which) = @_;
910: my $output;
911:
912: $which ||= $env{'request.role'};
913:
914: foreach my $envkey (sort(keys(%env))) {
915: next if ($envkey!~/^user\.priv\.\Q$which\E\.(.*)/);
916:
917: my $where=$1;
918: my $ttype;
919: my $twhere;
920: my (undef,$tdom,$trest,$tsec)=split(m{/},$where);
921: if ($trest) {
922: if ($env{'course.'.$tdom.'_'.$trest.'.description'} eq 'ca') {
923: $ttype='Construction Space';
924: $twhere='User: '.$trest.', Domain: '.$tdom;
925: } else {
926: $ttype= &Apache::loncommon::course_type($tdom.'_'.$trest);
927: $twhere=$env{'course.'.$tdom.'_'.$trest.'.description'};
928: if ($tsec) {
929: my $sec_type = 'Section';
930: if (exists($env{"user.role.gr.$where"})) {
931: $sec_type = 'Group';
932: }
933: $twhere.=' ('.$sec_type.': '.$tsec.')';
934: }
935: }
936: } elsif ($tdom) {
937: $ttype='Domain';
938: $twhere=$tdom;
939: } else {
940: $ttype='System';
941: $twhere='/';
942: }
943: $output .= "\n<h3>".$ttype.': '.$twhere.'</h3>'."\n<ul>";
944: foreach my $priv (sort(split(/:/,$env{$envkey}))) {
945: next if (!$priv);
946:
947: my ($prv,$restr)=split(/\&/,$priv);
948: my $trestr='';
949: if ($restr ne 'F') {
950: $trestr.=' ('.
951: join(', ',
952: map { &Apache::lonnet::plaintext($_) }
953: (split('',$restr))).') ';
954: }
955: $output .= "\n\t".
956: '<li>'.&Apache::lonnet::plaintext($prv).$trestr.'</li>';
957: }
958: $output .= "\n".'</ul>';
959: }
960: return $output;
961: }
962:
963: sub role_status {
964: my ($rolekey,$then,$now,$role,$where,$trolecode,$tstatus,$tstart,$tend) = @_;
965: my @pwhere = ();
966: if (exists($env{$rolekey}) && $env{$rolekey} ne '') {
967: (undef,undef,$$role,@pwhere)=split(/\./,$rolekey);
968: unless (!defined($$role) || $$role eq '') {
969: $$where=join('.',@pwhere);
970: $$trolecode=$$role.'.'.$$where;
971: ($$tstart,$$tend)=split(/\./,$env{$rolekey});
972: $$tstatus='is';
973: if ($$tstart && $$tstart>$then) {
974: $$tstatus='future';
975: if ($$tstart<$now) { $$tstatus='will'; }
976: }
977: if ($$tend) {
978: if ($$tend<$then) {
979: $$tstatus='expired';
980: } elsif ($$tend<$now) {
981: $$tstatus='will_not';
982: }
983: }
984: }
985: }
986: }
987:
988: sub build_roletext {
989: my ($trolecode,$tdom,$trest,$tstatus,$tryagain,$advanced,$tremark,$tbg,$tfont,$trole,$twhere,$tpstart,$tpend,$nochoose,$button,$switchserver) = @_;
990: my $roletext='<tr bgcolor="'.$tbg.'" class="LC_rolesmenu_'.$tstatus.'">';
991: my $is_dc=($trolecode =~ m/^dc\./);
992: my $rowspan=($is_dc) ? ''
993: : ' rowspan="2" ';
994:
995: unless ($nochoose) {
996: my $buttonname=$trolecode;
997: $buttonname=~s/\W//g;
998: if (!$button) {
999: if ($switchserver) {
1000: $roletext.='<td'.$rowspan.'><span class="LC_rolesinfo"><a href="/adm/switchserver?'.
1001: $switchserver.'">'.&mt('Switch Server').'</a></span></td>';
1002: } else {
1003: $roletext.=('<td'.$rowspan.'> </td>');
1004: }
1005: } elsif ($tstatus eq 'is') {
1006: $roletext.='<td'.$rowspan.'><input name="'.$buttonname.'" type="button" value="'.
1007: &mt('Select').'" onClick="javascript:enterrole(this.form,\''.
1008: $trolecode."','".$buttonname.'\');" /></td>';
1009: } elsif ($tryagain) {
1010: $roletext.=
1011: '<td'.$rowspan.'><input name="'.$buttonname.'" type="button" value="'.
1012: &mt('Try Selecting Again').'" onClick="javascript:enterrole(this.form,\''.
1013: $trolecode."','".$buttonname.'\');" /></td>';
1014: } elsif ($advanced) {
1015: $roletext.=
1016: '<td'.$rowspan.'><input name="'.$buttonname.'" type="button" value="'.
1017: &mt('Re-Initialize').'" onClick="javascript:enterrole(this.form,\''.
1018: $trolecode."','".$buttonname.'\');" /></td>';
1019: } else {
1020: $roletext.='<td'.$rowspan.'> </td>';
1021: }
1022: }
1023: if ($trolecode !~ m/^(dc|ca|au|aa)\./) {
1024: $tremark.=&Apache::lonannounce::showday(time,1,
1025: &Apache::lonannounce::readcalendar($tdom.'_'.$trest));
1026: }
1027: $roletext.='<td><font color="'.$tfont.'">'.$trole.
1028: '</font></td><td><font color="'.$tfont.'">'.$twhere.
1029: '</font></td><td><font color="'.$tfont.'">'.$tpstart.
1030: '</font></td><td><font color="'.$tfont.'">'.$tpend.
1031: '</font></td></tr>';
1032: if (!$is_dc) {
1033: $roletext.='<tr bgcolor="'.$tbg.'"><td colspan="4"><font color="'.$tfont.'"><span class="LC_rolesinfo">'.$tremark.
1034: '</span> </font></td></tr><tr><td colspan="5" height="3"></td></tr>'."\n";
1035: }
1036: return $roletext;
1037: }
1038:
1039: sub check_needs_switchserver {
1040: my ($possiblerole) = @_;
1041: my $needs_switchserver;
1042: my ($role,$where) = split(/\./,$possiblerole,2);
1043: my (undef,$tdom,$twho) = split(/\//,$where);
1044: my ($server_status,$home);
1045: if (($role eq 'ca') || ($role eq 'aa')) {
1046: ($server_status,$home) = &check_author_homeserver($twho,$tdom);
1047: } else {
1048: ($server_status,$home) = &check_author_homeserver($env{'user.name'},
1049: $env{'user.domain'});
1050: }
1051: if ($server_status eq 'switchserver') {
1052: $needs_switchserver = 1;
1053: }
1054: return $needs_switchserver;
1055: }
1056:
1057: sub check_author_homeserver {
1058: my ($uname,$udom)=@_;
1059: if (($uname eq '') || ($udom eq '')) {
1060: return ('fail','');
1061: }
1062: my $home = &Apache::lonnet::homeserver($uname,$udom);
1063: if (&Apache::lonnet::host_domain($home) ne $udom) {
1064: return ('fail',$home);
1065: }
1066: my @ids=&Apache::lonnet::current_machine_ids();
1067: if (grep(/^\Q$home\E$/,@ids)) {
1068: return ('ok',$home);
1069: } else {
1070: return ('switchserver',$home);
1071: }
1072: }
1073:
1074: sub check_privs {
1075: my ($cdom,$cnum,$then,$now,$checkrole) = @_;
1076: my $cckey = 'user.role.'.$checkrole.'./'.$cdom.'/'.$cnum;
1077: if ($env{$cckey}) {
1078: my ($role,$where,$trolecode,$tstart,$tend,$tremark,$tstatus,$tpstart,$tpend,$tfont);
1079: &role_status($cckey,$then,$now,\$role,\$where,\$trolecode,\$tstatus,\$tstart,\$tend);
1080: unless (($tstatus eq 'is') || ($tstatus eq 'will_not')) {
1081: &set_privileges($cdom,$cnum,$checkrole);
1082: }
1083: } else {
1084: &set_privileges($cdom,$cnum,$checkrole);
1085: }
1086: }
1087:
1088: sub check_fordc {
1089: my ($dcroles,$then) = @_;
1090: my $numdc = 0;
1091: if ($env{'user.adv'}) {
1092: foreach my $envkey (sort keys %env) {
1093: if ($envkey=~/^user\.role\.dc\.\/($match_domain)\/$/) {
1094: my $dcdom = $1;
1095: my $livedc = 1;
1096: my ($tstart,$tend)=split(/\./,$env{$envkey});
1097: if ($tstart && $tstart>$then) { $livedc = 0; }
1098: if ($tend && $tend <$then) { $livedc = 0; }
1099: if ($livedc) {
1100: $$dcroles{$dcdom} = $envkey;
1101: $numdc++;
1102: }
1103: }
1104: }
1105: }
1106: return $numdc;
1107: }
1108:
1109: sub adhoc_course_role {
1110: my ($then) = @_;
1111: my ($cdom,$cnum);
1112: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
1113: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
1114: if (&check_forcc($cdom,$cnum,$then)) {
1115: my $setprivs;
1116: if (!defined($env{'user.role.'.$env{'form.switchrole'}})) {
1117: $setprivs = 1;
1118: } else {
1119: my ($start,$end) = split(/\./,$env{'user.role.'.$env{'form.switchrole'}});
1120: if (($start && ($start>$then || $start == -1)) ||
1121: ($end && $end<$then)) {
1122: $setprivs = 1;
1123: }
1124: }
1125: if ($setprivs) {
1126: if ($env{'form.switchrole'} =~ m-^(in|ta|ep|ad|st|cr)([\w/]*)\./\Q$cdom\E/\Q$cnum\E/?(\w*)$-) {
1127: my $role = $1;
1128: my $custom_role = $2;
1129: my $usec = $3;
1130: if ($role eq 'cr') {
1131: if ($custom_role =~ m-^/$match_domain/$match_username/\w+$-) {
1132: $role .= $custom_role;
1133: } else {
1134: return;
1135: }
1136: }
1137: my (%userroles,%newrole,%newgroups);
1138: my $area = '/'.$cdom.'/'.$cnum;
1139: my $spec = $role.'.'.$area;
1140: if ($usec ne '') {
1141: $spec .= '/'.$usec;
1142: $area .= '/'.$usec;
1143: }
1144: &Apache::lonnet::standard_roleprivs(\%newrole,$role,$cdom,$spec,$cnum,$area);
1145: &Apache::lonnet::set_userprivs(\%userroles,\%newrole,%newgroups);
1146: my $adhocstart = $then-1;
1147: $userroles{'user.role.'.$spec} = $adhocstart.'.';
1148: &Apache::lonnet::appenv(\%userroles,[$role,'cm']);
1149: }
1150: }
1151: }
1152: return;
1153: }
1154:
1155: sub check_forcc {
1156: my ($cdom,$cnum,$then) = @_;
1157: my $is_cc;
1158: if ($cdom ne '' && $cnum ne '') {
1159: if (&Apache::lonnet::is_course($cdom,$cnum)) {
1160: my $envkey = 'user.role.cc./'.$cdom.'/'.$cnum;
1161: if (defined($env{$envkey})) {
1162: $is_cc = 1;
1163: my ($tstart,$tend)=split(/\./,$env{$envkey});
1164: if ($tstart && $tstart>$then) { $is_cc = 0; }
1165: if ($tend && $tend <$then) { $is_cc = 0; }
1166: }
1167: }
1168: }
1169: return $is_cc;
1170: }
1171:
1172: sub courselink {
1173: my ($dcdom,$rowtype) = @_;
1174: my $courseform=&Apache::loncommon::selectcourse_link
1175: ('rolechoice','dccourse'.$rowtype.'_'.$dcdom,
1176: 'dcdomain'.$rowtype.'_'.$dcdom,'coursedesc'.$rowtype.'_'.
1177: $dcdom,$dcdom,undef);
1178: my $hiddenitems = '<input type="hidden" name="dcdomain'.$rowtype.'_'.$dcdom.'" value="'.$dcdom.'" />'.
1179: '<input type="hidden" name="origdom'.$rowtype.'_'.$dcdom.'" value="'.$dcdom.'" />'.
1180: '<input type="hidden" name="dccourse'.$rowtype.'_'.$dcdom.'" value="" />'.
1181: '<input type="hidden" name="coursedesc'.$rowtype.'_'.$dcdom.'" value="" />';
1182: return $courseform.$hiddenitems;
1183: }
1184:
1185: sub coursepick_jscript {
1186: my %lt = &Apache::lonlocal::texthash(
1187: plsu => "Please use the 'Select Course' link to open a separate pick course window where you may select the course you wish to enter.",
1188: youc => 'You can only use this screen to select courses in the current domain.',
1189: );
1190: my $verify_script = <<"END";
1191: <script type="text/javascript">
1192: function verifyCoursePick(caller) {
1193: var numbutton = getIndex(caller)
1194: var pickedCourse = document.rolechoice.elements[numbutton+4].value
1195: var pickedDomain = document.rolechoice.elements[numbutton+2].value
1196: if (document.rolechoice.elements[numbutton+2].value == document.rolechoice.elements[numbutton+3].value) {
1197: if (pickedCourse != '') {
1198: if (numbutton != -1) {
1199: var courseTarget = "cc./"+pickedDomain+"/"+pickedCourse
1200: document.rolechoice.elements[numbutton+1].name = courseTarget
1201: document.rolechoice.submit()
1202: }
1203: }
1204: else {
1205: alert("$lt{'plsu'}");
1206: }
1207: }
1208: else {
1209: alert("$lt{'youc'}")
1210: }
1211: }
1212: function getIndex(caller) {
1213: for (var i=0;i<document.rolechoice.elements.length;i++) {
1214: if (document.rolechoice.elements[i] == caller) {
1215: return i;
1216: }
1217: }
1218: return -1;
1219: }
1220: </script>
1221: END
1222: return $verify_script;
1223: }
1224:
1225: sub coauthorlink {
1226: my ($dcdom,$rowtype) = @_;
1227: my $coauthorform=&Apache::loncommon::selectauthor_link('rolechoice',$dcdom);
1228: my $hiddenitems = '<input type="hidden" name="adhoccauname'.$rowtype.'_'.$dcdom.'" value="" />';
1229: return $coauthorform.$hiddenitems;
1230: }
1231:
1232: sub display_cc_role {
1233: my $rolekey = shift;
1234: my $roletext;
1235: my $advanced = $env{'user.adv'};
1236: my $tryagain = $env{'form.tryagain'};
1237: unless ($rolekey =~/^error\:/) {
1238: if ($rolekey =~ m-^user\.role.cc\./($match_domain)/($match_courseid)$-) {
1239: my $tcourseid = $1.'_'.$2;
1240: my $trolecode = 'cc./'.$1.'/'.$2;
1241: my $twhere;
1242: my $ttype;
1243: my $tbg='#77FF77';
1244: my $tfont='#003300';
1245: my %newhash=&Apache::lonnet::coursedescription($tcourseid);
1246: if (%newhash) {
1247: $twhere=$newhash{'description'}.
1248: ' <font size="-2">'.
1249: &Apache::loncommon::syllabuswrapper(&mt('Syllabus'),$2,$1,$tfont).
1250: '</font>';
1251: $ttype = $newhash{'type'};
1252: } else {
1253: $twhere=&mt('Currently not available');
1254: $env{'course.'.$tcourseid.'.description'}=$twhere;
1255: }
1256: my $trole = &Apache::lonnet::plaintext('cc',$ttype);
1257: $twhere.="<br />".&mt('Domain').":".$1;
1258: $roletext = &build_roletext($trolecode,$1,$2,'is',$tryagain,$advanced,'',$tbg,$tfont,$trole,$twhere,'','','',1,'');
1259: }
1260: }
1261: return ($roletext);
1262: }
1263:
1264: sub adhoc_roles_row {
1265: my ($dcdom,$rowtype) = @_;
1266: my $output = '<tr bgcolor="#77FF77">'.
1267: ' <td colspan="5"><table><tr><td><span class="LC_rolesinfo">'
1268: .&mt('[_1]Ad hoc[_2] roles in domain [_3] --',
1269: '<span class="LC_cusr_emph">','</span>',$dcdom).'</span></td><td>';
1270: my $selectcclink = &courselink($dcdom,$rowtype);
1271: my $ccrole = &Apache::lonnet::plaintext('cc');
1272: my $carole = &Apache::lonnet::plaintext('ca');
1273: my $selectcalink = &coauthorlink($dcdom,$rowtype);
1274: $output.= '<span class="LC_rolesinfo">'.
1275: &mt('[_1]: [_2]',$ccrole,$selectcclink).
1276: '</span><br /></td><td> </td><td><span class="LC_rolesinfo">'.
1277: &mt('[_1]: [_2]',$carole,$selectcalink).
1278: '</span><br /></td></tr></table></td></tr>'.
1279: '<tr><td colspan="5" height="3"></td></tr>'."\n";
1280: return $output;
1281: }
1282:
1283: sub recent_filename {
1284: my $area=shift;
1285: return 'nohist_recent_'.&escape($area);
1286: }
1287:
1288: sub set_privileges {
1289: # role can be cc or ca
1290: my ($dcdom,$pickedcourse,$role) = @_;
1291: my $area = '/'.$dcdom.'/'.$pickedcourse;
1292: my $spec = $role.'.'.$area;
1293: my %userroles = &Apache::lonnet::set_arearole($role,$area,'','',
1294: $env{'user.domain'},
1295: $env{'user.name'});
1296: my %ccrole = ();
1297: &Apache::lonnet::standard_roleprivs(\%ccrole,$role,$dcdom,$spec,$pickedcourse,$area);
1298: my ($author,$adv)= &Apache::lonnet::set_userprivs(\%userroles,\%ccrole);
1299: &Apache::lonnet::appenv(\%userroles,[$role,'cm']);
1300:
1301: &Apache::lonnet::log($env{'user.domain'},
1302: $env{'user.name'},
1303: $env{'user.home'},
1304: "Role ".$role);
1305: &Apache::lonnet::appenv(
1306: {'request.role' => $spec,
1307: 'request.role.domain' => $dcdom,
1308: 'request.course.sec' => ''});
1309: my $tadv=0;
1310: if (&Apache::lonnet::allowed('adv') eq 'F') { $tadv=1; }
1311: &Apache::lonnet::appenv({'request.role.adv' => $tadv});
1312: }
1313:
1314: sub courseloadpage {
1315: my ($courseid) = @_;
1316: my $startpage;
1317: my %entry_settings = &Apache::lonnet::get('nohist_whatsnew',
1318: [$courseid.':courseinit']);
1319: my ($tmp) = %entry_settings;
1320: unless ($tmp =~ /^error: 2 /) {
1321: $startpage = $entry_settings{$courseid.':courseinit'};
1322: }
1323: if ($startpage eq '') {
1324: if (exists($env{'environment.course_init_display'})) {
1325: $startpage = $env{'environment.course_init_display'};
1326: }
1327: }
1328: return $startpage;
1329: }
1330:
1331: 1;
1332: __END__
1333:
1334: =head1 NAME
1335:
1336: Apache::lonroles - User Roles Screen
1337:
1338: =head1 SYNOPSIS
1339:
1340: Invoked by /etc/httpd/conf/srm.conf:
1341:
1342: <Location /adm/roles>
1343: PerlAccessHandler Apache::lonacc
1344: SetHandler perl-script
1345: PerlHandler Apache::lonroles
1346: ErrorDocument 403 /adm/login
1347: ErrorDocument 500 /adm/errorhandler
1348: </Location>
1349:
1350: =head1 OVERVIEW
1351:
1352: =head2 Choosing Roles
1353:
1354: C<lonroles> is a handler that allows a user to switch roles in
1355: mid-session. LON-CAPA attempts to work with "No Role Specified", the
1356: default role that a user has before selecting a role, as widely as
1357: possible, but certain handlers for example need specification which
1358: course they should act on, etc. Both in this scenario, and when the
1359: handler determines via C<lonnet>'s C<&allowed> function that a certain
1360: action is not allowed, C<lonroles> is used as error handler. This
1361: allows the user to select another role which may have permission to do
1362: what they were trying to do. C<lonroles> can also be accessed via the
1363: B<CRS> button in the Remote Control.
1364:
1365: =begin latex
1366:
1367: \begin{figure}
1368: \begin{center}
1369: \includegraphics[width=0.45\paperwidth,keepaspectratio]{Sample_Roles_Screen}
1370: \caption{\label{Sample_Roles_Screen}Sample Roles Screen}
1371: \end{center}
1372: \end{figure}
1373:
1374: =end latex
1375:
1376: =head2 Role Initialization
1377:
1378: 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.
1379:
1380: =head1 INTRODUCTION
1381:
1382: This module enables a user to select what role he wishes to
1383: operate under (instructor, student, teaching assistant, course
1384: coordinator, etc). These roles are pre-established by the actions
1385: of upper-level users.
1386:
1387: This is part of the LearningOnline Network with CAPA project
1388: described at http://www.lon-capa.org.
1389:
1390: =head1 HANDLER SUBROUTINE
1391:
1392: This routine is called by Apache and mod_perl.
1393:
1394: =over 4
1395:
1396: =item *
1397:
1398: Roles Initialization (yes/no)
1399:
1400: =item *
1401:
1402: Get Error Message from Environment
1403:
1404: =item *
1405:
1406: Who is this?
1407:
1408: =item *
1409:
1410: Generate Page Output
1411:
1412: =item *
1413:
1414: Choice or no choice
1415:
1416: =item *
1417:
1418: Table
1419:
1420: =item *
1421:
1422: Privileges
1423:
1424: =back
1425:
1426: =cut
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