1: # The LearningOnline Network with CAPA
2: # User Roles Screen
3: #
4: # $Id: lonroles.pm,v 1.197 2008/07/04 19:26:35 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:
47:
48: sub redirect_user {
49: my ($r,$title,$url,$msg,$launch_nav) = @_;
50: $msg = $title if (! defined($msg));
51: &Apache::loncommon::content_type($r,'text/html');
52: &Apache::loncommon::no_cache($r);
53: $r->send_http_header;
54: my $swinfo=&Apache::lonmenu::rawconfig();
55: my $navwindow;
56: if ($launch_nav eq 'on') {
57: $navwindow.=&Apache::lonnavdisplay::launch_win('now',undef,undef,
58: ($url =~ m-^/adm/whatsnew-));
59: } else {
60: $navwindow.=&Apache::lonnavmaps::close();
61: }
62: my $start_page = &Apache::loncommon::start_page('Switching Role',undef,
63: {'redirect' => [1,$url],});
64: my $end_page = &Apache::loncommon::end_page();
65:
66: # Note to style police:
67: # This must only replace the spaces, nothing else, or it bombs elsewhere.
68: $url=~s/ /\%20/g;
69: $r->print(<<ENDREDIR);
70: $start_page
71: <script type="text/javascript">
72: $swinfo
73: </script>
74: $navwindow
75: <h1>$msg</h1>
76: $end_page
77: ENDREDIR
78: return;
79: }
80:
81: sub error_page {
82: my ($r,$error,$dest)=@_;
83: &Apache::loncommon::content_type($r,'text/html');
84: &Apache::loncommon::no_cache($r);
85: $r->send_http_header;
86: return OK if $r->header_only;
87: $r->print(&Apache::loncommon::start_page('Problems during Course Initialization').
88: '<script type="text/javascript">'.
89: &Apache::lonmenu::rawconfig().'</script>'.
90: '<p>'.&mt('The following problems occurred:').
91: $error.
92: '</p><br /><a href="'.$dest.'">'.&mt('Continue').'</a>'.
93: &Apache::loncommon::end_page());
94: }
95:
96: sub handler {
97:
98: my $r = shift;
99:
100: my $now=time;
101: my $then=$env{'user.login.time'};
102: my $envkey;
103: my %dcroles = ();
104: my $numdc = &check_fordc(\%dcroles,$then);
105: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'});
106:
107: # ================================================================== Roles Init
108: if ($env{'form.selectrole'}) {
109:
110: my $locknum=&Apache::lonnet::get_locks();
111: if ($locknum) { return 409; }
112:
113: if ($env{'form.newrole'}) {
114: $env{'form.'.$env{'form.newrole'}}=1;
115: }
116: if ($env{'request.course.id'}) {
117: # Check if user is CC trying to select a course role
118: if ($env{'form.switchrole'}) {
119: if (!defined($env{'user.role.'.$env{'form.switchrole'}})) {
120: &adhoc_course_role($then);
121: }
122: }
123: my %temp=('logout_'.$env{'request.course.id'} => time);
124: &Apache::lonnet::put('email_status',\%temp);
125: &Apache::lonnet::delenv('user.state.'.$env{'request.course.id'});
126: }
127: &Apache::lonnet::appenv({"request.course.id" => '',
128: "request.course.fn" => '',
129: "request.course.uri" => '',
130: "request.course.sec" => '',
131: "request.role" => 'cm',
132: "request.role.adv" => $env{'user.adv'},
133: "request.role.domain" => $env{'user.domain'}});
134: # Check if user is a DC trying to enter a course or author space and needs privs to be created
135: if ($numdc > 0) {
136: foreach my $envkey (keys %env) {
137: # Is this an ad-hoc CC-role?
138: if (my ($domain,$coursenum) =
139: ($envkey =~ m-^form\.cc\./($match_domain)/($match_courseid)$-)) {
140: if ($dcroles{$domain}) {
141: &check_privs($domain,$coursenum,$then,$now,'cc');
142: }
143: last;
144: }
145: # Is this an ad-hoc CA-role?
146: if (my ($domain,$user) =
147: ($envkey =~ m-^form\.ca\./($match_domain)/($match_username)$-)) {
148: # Check if author blocked ca-access
149: my %blocked=&Apache::lonnet::get('environment',['domcoord.author'],$domain,$user);
150: if ($blocked{'domcoord.author'} eq 'blocked') {
151: delete($env{$envkey});
152: $env{'user.error.msg'}=':::1:User '.$user.' in domain '.$domain.' blocked domain coordinator access';
153: last;
154: }
155: if ($dcroles{$domain}) {
156: my ($server_status,$home) = &check_author_homeserver($user,$domain);
157: if (($server_status eq 'ok') || ($server_status eq 'switchserver')) {
158: &check_privs($domain,$user,$then,$now,'ca');
159: if ($server_status eq 'switchserver') {
160: my $trolecode = 'ca./'.$domain.'/'.$user;
161: my $switchserver = '/adm/switchserver?'
162: .'otherserver='.$home.'&role='.$trolecode;
163: $r->internal_redirect($switchserver);
164: }
165: } else {
166: delete($env{$envkey});
167: }
168: } else {
169: delete($env{$envkey});
170: }
171: last;
172: }
173: }
174: }
175:
176: foreach $envkey (keys %env) {
177: next if ($envkey!~/^user\.role\./);
178: my ($where,$trolecode,$role,$tstatus,$tend,$tstart);
179: &role_status($envkey,$then,$now,\$role,\$where,\$trolecode,\$tstatus,\$tstart,\$tend);
180: if ($env{'form.'.$trolecode}) {
181: if ($tstatus eq 'is') {
182: $where=~s/^\///;
183: my ($cdom,$cnum,$csec)=split(/\//,$where);
184: # check for course groups
185: my %coursegroups = &Apache::lonnet::get_active_groups(
186: $env{'user.domain'},$env{'user.name'},$cdom, $cnum);
187: my $cgrps = join(':',keys(%coursegroups));
188:
189: # store role if recent_role list being kept
190: if ($env{'environment.recentroles'}) {
191: my %frozen_roles =
192: &Apache::lonhtmlcommon::get_recent_frozen('roles',$env{'environment.recentrolesn'});
193: &Apache::lonhtmlcommon::store_recent('roles',
194: $trolecode,' ',$frozen_roles{$trolecode});
195: }
196:
197:
198: # check for keyed access
199: if (($role eq 'st') &&
200: ($env{'course.'.$cdom.'_'.$cnum.'.keyaccess'} eq 'yes')) {
201: # who is key authority?
202: my $authdom=$cdom;
203: my $authnum=$cnum;
204: if ($env{'course.'.$cdom.'_'.$cnum.'.keyauth'}) {
205: ($authnum,$authdom)=
206: split(/:/,$env{'course.'.$cdom.'_'.$cnum.'.keyauth'});
207: }
208: # check with key authority
209: unless (&Apache::lonnet::validate_access_key(
210: $env{'environment.key.'.$cdom.'_'.$cnum},
211: $authdom,$authnum)) {
212: # there is no valid key
213: if ($env{'form.newkey'}) {
214: # student attempts to register a new key
215: &Apache::loncommon::content_type($r,'text/html');
216: &Apache::loncommon::no_cache($r);
217: $r->send_http_header;
218: my $swinfo=&Apache::lonmenu::rawconfig();
219: my $start_page=&Apache::loncommon::start_page
220: ('Verifying Access Key to Unlock this Course');
221: my $end_page=&Apache::loncommon::end_page();
222: my $buttontext=&mt('Enter Course');
223: my $message=&mt('Successfully registered key');
224: my $assignresult=
225: &Apache::lonnet::assign_access_key(
226: $env{'form.newkey'},
227: $authdom,$authnum,
228: $cdom,$cnum,
229: $env{'user.domain'},
230: $env{'user.name'},
231: 'Assigned from '.$ENV{'REMOTE_ADDR'}.' at '.localtime().' for '.
232: $trolecode);
233: unless ($assignresult eq 'ok') {
234: $assignresult=~s/^error\:\s*//;
235: $message=&mt($assignresult).
236: '<br /><a href="/adm/logout">'.
237: &mt('Logout').'</a>';
238: $buttontext=&mt('Re-Enter Key');
239: }
240: $r->print(<<ENDENTEREDKEY);
241: $start_page
242: <script type="text/javascript">
243: $swinfo
244: </script>
245: <form method="post">
246: <input type="hidden" name="selectrole" value="1" />
247: <input type="hidden" name="$trolecode" value="1" />
248: <font size="+2">$message</font><br />
249: <input type="submit" value="$buttontext" />
250: </form>
251: $end_page
252: ENDENTEREDKEY
253: return OK;
254: } else {
255: # print form to enter a new key
256: &Apache::loncommon::content_type($r,'text/html');
257: &Apache::loncommon::no_cache($r);
258: $r->send_http_header;
259: my $swinfo=&Apache::lonmenu::rawconfig();
260: my $start_page=&Apache::loncommon::start_page
261: ('Enter Access Key to Unlock this Course');
262: my $end_page=&Apache::loncommon::end_page();
263: $r->print(<<ENDENTERKEY);
264: $start_page
265: <script type="text/javascript">
266: $swinfo
267: </script>
268: <form method="post">
269: <input type="hidden" name="selectrole" value="1" />
270: <input type="hidden" name="$trolecode" value="1" />
271: <input type="text" size="20" name="newkey" value="$env{'form.newkey'}" />
272: <input type="submit" value="Enter key" />
273: </form>
274: $end_page
275: ENDENTERKEY
276: return OK;
277: }
278: }
279: }
280: &Apache::lonnet::log($env{'user.domain'},
281: $env{'user.name'},
282: $env{'user.home'},
283: "Role ".$trolecode);
284:
285: &Apache::lonnet::appenv(
286: {'request.role' => $trolecode,
287: 'request.role.domain' => $cdom,
288: 'request.course.sec' => $csec,
289: 'request.course.groups' => $cgrps});
290: my $tadv=0;
291:
292: if (($cnum) && ($role ne 'ca') && ($role ne 'aa')) {
293: my $msg;
294: my ($furl,$ferr)=
295: &Apache::lonuserstate::readmap($cdom.'/'.$cnum);
296: if (($env{'form.orgurl'}) &&
297: ($env{'form.orgurl'}!~/^\/adm\/flip/)) {
298: my $dest=$env{'form.orgurl'};
299: if (&Apache::lonnet::allowed('adv') eq 'F') { $tadv=1; }
300: &Apache::lonnet::appenv({'request.role.adv'=>$tadv});
301: if (($ferr) && ($tadv)) {
302: &error_page($r,$ferr,$dest);
303: } else {
304: $r->internal_redirect($dest);
305: }
306: return OK;
307: } else {
308: if (!$env{'request.course.id'}) {
309: &Apache::lonnet::appenv(
310: {"request.course.id" => $cdom.'_'.$cnum});
311: $furl='/adm/roles?tryagain=1';
312: $msg=
313: '<h1><span class="LC_error">'.
314: &mt('Could not initialize [_1] at this time.',
315: $env{'course.'.$cdom.'_'.$cnum.'.description'}).
316: '</span></h1><h3>'.&mt('Please try again.').'</h3>'.$ferr;
317: }
318: if (&Apache::lonnet::allowed('adv') eq 'F') { $tadv=1; }
319: &Apache::lonnet::appenv({'request.role.adv'=>$tadv});
320:
321: if (($ferr) && ($tadv)) {
322: &error_page($r,$ferr,$furl);
323: } else {
324: # Check to see if the user is a CC entering a course
325: # for the first time
326: my (undef, undef, $role, $courseid) = split(/\./, $envkey);
327: if (substr($courseid, 0, 1) eq '/') {
328: $courseid = substr($courseid, 1);
329: }
330: $courseid =~ s/\//_/;
331: if ($role eq 'cc' && $env{'course.' . $courseid .
332: '.course.helper.not.run'}) {
333: $furl = "/adm/helper/course.initialization.helper";
334: # Send the user to the course they selected
335: } elsif ($env{'request.course.id'}) {
336: if ($env{'form.destinationurl'}) {
337: my $dest = $env{'form.destinationurl'};
338: &redirect_user($r,&mt('Entering [_1]',
339: $env{'course.'.$courseid.'.description'}),
340: $dest,$msg,
341: $env{'environment.remotenavmap'});
342: return OK;
343: }
344: if (&Apache::lonnet::allowed('whn',
345: $env{'request.course.id'})
346: || &Apache::lonnet::allowed('whn',
347: $env{'request.course.id'}.'/'
348: .$env{'request.course.sec'})
349: ) {
350: my $startpage = &courseloadpage($courseid);
351: unless ($startpage eq 'firstres') {
352: $msg = &mt('Entering [_1] ....',
353: $env{'course.'.$courseid.'.description'});
354: &redirect_user($r,&mt('New in course'),
355: '/adm/whatsnew?refpage=start',$msg,
356: $env{'environment.remotenavmap'});
357: return OK;
358: }
359: }
360: }
361: # Are we allowed to look at the first resource?
362: if ($furl !~ m|^/adm/|) {
363: # Guess not ...
364: $furl=&Apache::lonpageflip::first_accessible_resource();
365: }
366: $msg = &mt('Entering [_1] ...',
367: $env{'course.'.$courseid.'.description'});
368: &redirect_user($r,&mt('Entering [_1]',
369: $env{'course.'.$courseid.'.description'}),
370: $furl,$msg,
371: $env{'environment.remotenavmap'});
372: }
373: return OK;
374: }
375: }
376: #
377: # Send the user to the construction space they selected
378: if ($role =~ /^(au|ca|aa)$/) {
379: my $redirect_url = '/priv/';
380: if ($role eq 'au') {
381: $redirect_url.=$env{'user.name'};
382: } else {
383: $where =~ /\/(.*)$/;
384: $redirect_url .= $1;
385: }
386: $redirect_url .= '/';
387: &redirect_user($r,&mt('Entering Construction Space'),
388: $redirect_url);
389: return OK;
390: }
391: if ($role eq 'dc') {
392: my $redirect_url = '/adm/menu/';
393: &redirect_user($r,&mt('Loading Domain Coordinator Menu'),
394: $redirect_url);
395: return OK;
396: }
397: }
398: }
399: }
400: }
401:
402:
403: # =============================================================== No Roles Init
404:
405: &Apache::loncommon::content_type($r,'text/html');
406: &Apache::loncommon::no_cache($r);
407: $r->send_http_header;
408: return OK if $r->header_only;
409:
410: my $swinfo=&Apache::lonmenu::rawconfig();
411: my $start_page=&Apache::loncommon::start_page('User Roles');
412: my $standby=&mt('Role selected. Please stand by.');
413: $standby=~s/\n/\\n/g;
414: 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 />';
415:
416: $r->print(<<ENDHEADER);
417: $start_page
418: <br />
419: <noscript>
420: $noscript
421: </noscript>
422: <script type="text/javascript">
423: $swinfo
424: window.focus();
425:
426: active=true;
427:
428: function enterrole (thisform,rolecode,buttonname) {
429: if (active) {
430: active=false;
431: document.title='$standby';
432: window.status='$standby';
433: thisform.newrole.value=rolecode;
434: thisform.submit();
435: } else {
436: alert('$standby');
437: }
438: }
439: </script>
440: ENDHEADER
441:
442: # ------------------------------------------ Get Error Message from Environment
443:
444: my ($fn,$priv,$nochoose,$error,$msg)=split(/:/,$env{'user.error.msg'});
445: if ($env{'user.error.msg'}) {
446: $r->log_reason(
447: "$msg for $env{'user.name'} domain $env{'user.domain'} access $priv",$fn);
448: }
449:
450: # ------------------------------------------------- Can this user re-init, etc?
451:
452: my $advanced=$env{'user.adv'};
453: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},['tryagain']);
454: my $tryagain=$env{'form.tryagain'};
455:
456: # -------------------------------------------------------- Generate Page Output
457: # --------------------------------------------------------------- Error Header?
458: if ($error) {
459: $r->print("<h1>".&mt('LON-CAPA Access Control')."</h1>");
460: $r->print("<!-- LONCAPAACCESSCONTROLERRORSCREEN --><hr /><pre>");
461: if ($priv ne '') {
462: $r->print(&mt('Access : ').&Apache::lonnet::plaintext($priv)."\n");
463: }
464: if ($fn ne '') {
465: $r->print(&mt('Resource: ').&Apache::lonenc::check_encrypt($fn)."\n");
466: }
467: if ($msg ne '') {
468: $r->print(&mt('Action : ').$msg."\n");
469: }
470: $r->print("</pre><hr />");
471: my $url=$fn;
472: my $last;
473: if (tie(my %hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
474: &GDBM_READER(),0640)) {
475: $last=$hash{'last_known'};
476: untie(%hash);
477: }
478: if ($last) { $fn.='?symb='.&escape($last); }
479:
480: &Apache::londocs::changewarning($r,undef,'You have modified your course recently, [_1] may fix this access problem.',
481: &Apache::lonenc::check_encrypt($fn));
482: } else {
483: if ($env{'user.error.msg'}) {
484: $r->print(
485: '<h3><span class="LC_error">'.
486: &mt('You need to choose another user role or enter a specific course for this function').'</span></h3>');
487: }
488: }
489: # -------------------------------------------------------- Choice or no choice?
490: if ($nochoose) {
491: $r->print("<h2>".&mt('Sorry ...')."</h2>\n<span class='LC_error'>".
492: &mt('This action is currently not authorized.').'</span>'.
493: &Apache::loncommon::end_page());
494: return OK;
495: } else {
496: if (($ENV{'REDIRECT_QUERY_STRING'}) && ($fn)) {
497: $fn.='?'.$ENV{'REDIRECT_QUERY_STRING'};
498: }
499: $r->print('<form method="post" name="rolechoice" action="'.(($fn)?$fn:$r->uri).'">');
500: $r->print('<input type="hidden" name="orgurl" value="'.$fn.'" />');
501: $r->print('<input type="hidden" name="selectrole" value="1" />');
502: $r->print('<input type="hidden" name="newrole" value="" />');
503: }
504: my (%roletext,%sortrole,%roleclass);
505: my $countactive=0;
506: my $countfuture=0;
507: my $countwill=0;
508: my $inrole=0;
509: my $possiblerole='';
510: my %futureroles;
511: my %roles_nextlogin;
512: foreach $envkey (sort keys %env) {
513: my $button = 1;
514: my $switchserver='';
515: my $roletext;
516: my $sortkey;
517: if ($envkey=~/^user\.role\./) {
518: my ($role,$where,$trolecode,$tstart,$tend,$tremark,$tstatus,$tpstart,$tpend,$tfont);
519: &role_status($envkey,$then,$now,\$role,\$where,\$trolecode,\$tstatus,\$tstart,\$tend);
520: next if (!defined($role) || $role eq '' || $role =~ /^gr/);
521: $tremark='';
522: $tpstart=' ';
523: $tpend=' ';
524: $tfont='#000000';
525: if ($tstart) {
526: $tpstart=&Apache::lonlocal::locallocaltime($tstart);
527: }
528: if ($tend) {
529: $tpend=&Apache::lonlocal::locallocaltime($tend);
530: }
531: if ($env{'request.role'} eq $trolecode) {
532: $tstatus='selected';
533: }
534: my $tbg;
535: if (($tstatus eq 'is')
536: || ($tstatus eq 'selected')
537: || ($tstatus eq 'will')
538: || ($tstatus eq 'future')
539: || ($env{'form.showall'})) {
540: if ($tstatus eq 'is') {
541: $tbg='#77FF77';
542: $tfont='#003300';
543: $possiblerole=$trolecode;
544: $countactive++;
545: } elsif ($tstatus eq 'future') {
546: $tbg='#FFFF77';
547: $button=0;
548: $futureroles{$trolecode} = $tstart.':'.$tend;
549: $countfuture ++;
550: } elsif ($tstatus eq 'will') {
551: $tbg='#FFAA77';
552: $tremark.=&mt('Active at next login. ');
553: $roles_nextlogin{$trolecode} = $tstart.':'.$tend;
554: $countwill ++;
555: } elsif ($tstatus eq 'expired') {
556: $tbg='#FF7777';
557: $tfont='#330000';
558: $button=0;
559: } elsif ($tstatus eq 'will_not') {
560: $tbg='#AAFF77';
561: $tremark.=&mt('Expired after logout. ');
562: } elsif ($tstatus eq 'selected') {
563: $tbg='#11CC55';
564: $tfont='#002200';
565: $inrole=1;
566: $countactive++;
567: $tremark.=&mt('Currently selected. ');
568: }
569: my $trole;
570: if ($role =~ /^cr\//) {
571: my ($rdummy,$rdomain,$rauthor,$rrole)=split(/\//,$role);
572: if ($tremark) { $tremark.='<br />'; }
573: $tremark.=&mt('Defined by ').$rauthor.
574: &mt(' at ').$rdomain.'.';
575: }
576: $trole=Apache::lonnet::plaintext($role);
577: my $ttype;
578: my $twhere;
579: my ($tdom,$trest,$tsection)=
580: split(/\//,Apache::lonnet::declutter($where));
581: # First, Co-Authorship roles
582: if (($role eq 'ca') || ($role eq 'aa')) {
583: my $home = &Apache::lonnet::homeserver($trest,$tdom);
584: my $allowed=0;
585: my @ids=&Apache::lonnet::current_machine_ids();
586: foreach my $id (@ids) { if ($id eq $home) { $allowed=1; } }
587: if (!$allowed) {
588: $button=0;
589: $switchserver='otherserver='.$home.'&role='.$trolecode;
590: }
591: #next if ($home eq 'no_host');
592: $home = &Apache::lonnet::hostname($home);
593: $ttype='Construction Space';
594: $twhere=&mt('User').': '.$trest.'<br />'.&mt('Domain').
595: ': '.$tdom.'<br />'.
596: ' '.&mt('Server').': '.$home;
597: $env{'course.'.$tdom.'_'.$trest.'.description'}='ca';
598: $tremark.=&Apache::lonhtmlcommon::authorbombs('/res/'.$tdom.'/'.$trest.'/');
599: $sortkey=$role."$trest:$tdom";
600: } elsif ($role eq 'au') {
601: # Authors
602: my $home = &Apache::lonnet::homeserver
603: ($env{'user.name'},$env{'user.domain'});
604: my $allowed=0;
605: my @ids=&Apache::lonnet::current_machine_ids();
606: foreach my $id (@ids) { if ($id eq $home) { $allowed=1; } }
607: if (!$allowed) {
608: $button=0;
609: $switchserver='otherserver='.$home.'&role='.$trolecode;
610: }
611: #next if ($home eq 'no_host');
612: $home = &Apache::lonnet::hostname($home);
613: $ttype='Construction Space';
614: $twhere=&mt('Domain').': '.$tdom.'<br />'.&mt('Server').
615: ': '.$home;
616: $env{'course.'.$tdom.'_'.$trest.'.description'}='ca';
617: $tremark.=&Apache::lonhtmlcommon::authorbombs('/res/'.$tdom.'/'.$env{'user.name'}.'/');
618: $sortkey=$role;
619: } elsif ($trest) {
620: my $tcourseid=$tdom.'_'.$trest;
621: $ttype = &Apache::loncommon::course_type($tcourseid);
622: $trole = &Apache::lonnet::plaintext($role,$ttype);
623: if ($env{'course.'.$tcourseid.'.description'}) {
624: $twhere=$env{'course.'.$tcourseid.'.description'};
625: $sortkey=$role."\0".$tdom."\0".$twhere."\0".$envkey;
626: unless ($twhere eq &mt('Currently not available')) {
627: $twhere.=' <font size="-2">'.
628: &Apache::loncommon::syllabuswrapper(&mt('Syllabus'),$trest,$tdom,$tfont).
629: '</font>';
630: }
631: } else {
632: my %newhash=&Apache::lonnet::coursedescription($tcourseid);
633: if (%newhash) {
634: $sortkey=$role."\0".$tdom."\0".$newhash{'description'}.
635: "\0".$envkey;
636: $twhere=$newhash{'description'}.
637: ' <font size="-2">'.
638: &Apache::loncommon::syllabuswrapper(&mt('Syllabus'),$trest,$tdom,$tfont).
639: '</font>';
640: $ttype = $newhash{'type'};
641: $trole = &Apache::lonnet::plaintext($role,$ttype);
642: } else {
643: $twhere=&mt('Currently not available');
644: $env{'course.'.$tcourseid.'.description'}=$twhere;
645: $sortkey=$role."\0".$tdom."\0".$twhere."\0".$envkey;
646: $ttype = 'Unavailable';
647: }
648: }
649: if ($tsection) {
650: $twhere.='<br />'.&mt('Section').': '.$tsection;
651: }
652: if ($role ne 'st') { $twhere.="<br />".&mt('Domain').":".$tdom; }
653: } elsif ($tdom) {
654: $ttype='Domain';
655: $twhere=$tdom;
656: $sortkey=$role.$twhere;
657: } else {
658: $ttype='System';
659: $twhere=&mt('system wide');
660: $sortkey=$role.$twhere;
661: }
662: $roletext.=&build_roletext($trolecode,$tdom,$trest,$tstatus,$tryagain,$advanced,$tremark,$tbg,$tfont,$trole,$twhere,$tpstart,$tpend,$nochoose,$button,$switchserver);
663: $roletext{$envkey}=$roletext;
664: if (!$sortkey) {$sortkey=$twhere."\0".$envkey;}
665: $sortrole{$sortkey}=$envkey;
666: $roleclass{$envkey}=$ttype;
667: }
668: }
669: }
670: if ($env{'user.adv'}) {
671: $r->print(
672: '<br /><span class="LC_rolesinfo"><label>'.&mt('Show all roles').': <input type="checkbox" name="showall"');
673: if ($env{'form.showall'}) { $r->print(' checked="checked" '); }
674: $r->print(' /></label><input type="submit" value="'.&mt('Display').'" /></span>');
675: } else {
676: if ($countactive > 0) {
677: my $domdesc = &Apache::lonnet::domain($env{'user.domain'},'description');
678: $r->print('<p>'.&mt('[_1]Visit the [_2]Course Catalog[_3] to view all [_4] LON-CAPA courses.','<b>','<a href="/adm/coursecatalog">','</a></b>',$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>');
679: }
680: }
681:
682: # No active roles
683: if ($countactive==0) {
684: if ($inrole) {
685: $r->print('<h2>'.&mt('Currently no additional roles or courses').'</h2>');
686: } else {
687: $r->print('<h2>'.&mt('Currently no active roles or courses').'</h2>');
688: }
689: &findcourse_advice($r);
690: $r->print('</form>');
691: if ($countfuture) {
692: $r->print(&mt('The following [quant,_1,role,roles] will become active in the future:',$countfuture));
693: my $doheaders = &roletable_headers($r,\%roleclass,\%sortrole,
694: $nochoose);
695: &print_rolerows($r,$doheaders,\%roleclass,\%sortrole,\%dcroles,
696: \%roletext);
697: my $tremark='';
698: my $tfont='#003300';
699: if ($env{'request.role'} eq 'cm') {
700: $r->print('<tr bgcolor="#11CC55">');
701: $tremark=&mt('Currently selected. ');
702: $tfont='#002200';
703: } else {
704: $r->print('<tr bgcolor="#77FF77">');
705: }
706: $r->print('<td></td><td colspan="3"><font color="'.$tfont.'"><span class="LC_rolesinfo">'.&mt('No role specified').
707: '</span></font></td><td><font color="'.$tfont.'">'.$tremark.
708: ' </font></td></tr>'."\n");
709:
710: $r->print('</table>');
711: }
712: $r->print(&Apache::loncommon::end_page());
713: return OK;
714: # Is there only one choice?
715: } elsif (($countactive==1) && ($env{'request.role'} eq 'cm')) {
716: $r->print('<h3>'.&mt('Please stand by.').'</h3>'.
717: '<input type="hidden" name="'.$possiblerole.'" value="1" />'.
718: '<noscript><br /><input type="submit" name="submit" value="'.&mt('Continue').'" /></noscript>');
719: $r->print("</form>\n");
720: $r->rflush();
721: $r->print('<script type="text/javascript">document.forms.rolechoice.submit();</script>');
722: $r->print(&Apache::loncommon::end_page());
723: return OK;
724: }
725: # More than one possible role
726: # ----------------------------------------------------------------------- Table
727: unless ((!&Apache::lonmenu::show_course()) || ($nochoose)) {
728: $r->print("<h2>".&mt('Select a Course to Enter')."</h2>\n");
729: }
730: my $doheaders = &roletable_headers($r,\%roleclass,\%sortrole,$nochoose);
731: if ($env{'environment.recentroles'}) {
732: my %recent_roles =
733: &Apache::lonhtmlcommon::get_recent('roles',$env{'environment.recentrolesn'});
734: my $output='';
735: foreach (sort(keys(%recent_roles))) {
736: if (defined($roletext{'user.role.'.$_})) {
737: $output.=$roletext{'user.role.'.$_};
738: if ($_ =~ m-dc\./($match_domain)/-
739: && $dcroles{$1}) {
740: $output .= &adhoc_roles_row($1,'recent');
741: }
742: } elsif ($numdc > 0) {
743: unless ($_ =~/^error\:/) {
744: $output.=&display_cc_role('user.role.'.$_);
745: }
746: }
747: }
748: if ($output) {
749: $r->print("<tr><td align='center' colspan='5'><font face='arial'>".
750: &mt('Recent Roles')."</font></td></tr>");
751: $r->print($output);
752: $doheaders ++;
753: }
754: }
755:
756: if ($numdc > 0) {
757: $r->print(&coursepick_jscript());
758: $r->print(&Apache::loncommon::coursebrowser_javascript().
759: &Apache::loncommon::authorbrowser_javascript());
760: }
761: &print_rolerows($r,$doheaders,\%roleclass,\%sortrole,\%dcroles,\%roletext);
762: my $tremark='';
763: my $tfont='#003300';
764: if ($env{'request.role'} eq 'cm') {
765: $r->print('<tr bgcolor="#11CC55">');
766: $tremark=&mt('Currently selected. ');
767: $tfont='#002200';
768: } else {
769: $r->print('<tr bgcolor="#77FF77">');
770: }
771: unless ($nochoose) {
772: if ($env{'request.role'} ne 'cm') {
773: $r->print('<td><input type="submit" value="'.
774: &mt('Select').'" name="cm" /></td>');
775: } else {
776: $r->print('<td> </td>');
777: }
778: }
779: $r->print('<td colspan="3"><font color="'.$tfont.'"><span class="LC_rolesinfo">'.&mt('No role specified').
780: '</span></font></td><td><font color="'.$tfont.'">'.$tremark.
781: ' </font></td></tr>'."\n");
782:
783: $r->print('</table>');
784: unless ($nochoose) {
785: $r->print("</form>\n");
786: }
787: # ------------------------------------------------------------ Privileges Info
788: if (($advanced) && (($env{'user.error.msg'}) || ($error))) {
789: $r->print('<hr /><h2>Current Privileges</h2>');
790: $r->print(&privileges_info());
791: }
792: $r->print(&Apache::lonnet::getannounce());
793: if ($advanced) {
794: $r->print('<p><small><i>'
795: .&mt('This is LON-CAPA [_1]',$r->dir_config('lonVersion'))
796: .'</i><br />'
797: .'<a href="/adm/logout">'.&mt('Logout').'</a> '
798: .'<a href="/adm/coursecatalog">'.&mt('Course Catalog')
799: .'</small></p>');
800: }
801: $r->print(&Apache::loncommon::end_page());
802: return OK;
803: }
804:
805: sub roletable_headers {
806: my ($r,$roleclass,$sortrole,$nochoose) = @_;
807: my $doheaders;
808: if ((ref($sortrole) eq 'HASH') && (ref($roleclass) eq 'HASH')) {
809: $r->print('<br /><table id="LC_rolesmenu"><tr>');
810: if (!$nochoose) { $r->print('<th> </th>'); }
811: $r->print('<th>'.&mt('User Role').'</th><th>'.&mt('Extent')
812: .'</th><th>'.&mt('Start').'</th><th>'.&mt('End')
813: .'</th></tr>'."\n");
814: $doheaders=-1;
815: my @roletypes = &roletypes();
816: foreach my $type (@roletypes) {
817: my $haverole=0;
818: foreach my $which (sort {uc($a) cmp uc($b)} (keys(%{$sortrole}))) {
819: if ($roleclass->{$sortrole->{$which}} =~ /^\Q$type\E/) {
820: $haverole=1;
821: }
822: }
823: if ($haverole) { $doheaders++; }
824: }
825: }
826: return $doheaders;
827: }
828:
829: sub roletypes {
830: my @types = ('Domain','Construction Space','Course','Unavailable','System');
831: return @types;
832: }
833:
834: sub print_rolerows {
835: my ($r,$doheaders,$roleclass,$sortrole,$dcroles,$roletext) = @_;
836: if ((ref($roleclass) eq 'HASH') && (ref($sortrole) eq 'HASH')) {
837: my @types = &roletypes();
838: foreach my $type (@types) {
839: my $output;
840: foreach my $which (sort {uc($a) cmp uc($b)} (keys(%{$sortrole}))) {
841: if ($roleclass->{$sortrole->{$which}} =~ /^\Q$type\E/) {
842: if (ref($roletext) eq 'HASH') {
843: $output.=$roletext->{$sortrole->{$which}};
844: if ($sortrole->{$which} =~ m-dc\./($match_domain)/-) {
845: if (ref($dcroles) eq 'HASH') {
846: if ($dcroles->{$1}) {
847: $output .= &adhoc_roles_row($1,'');
848: }
849: }
850: }
851: }
852: }
853: }
854: if ($output) {
855: if ($doheaders > 0) {
856: $r->print("<tr>".
857: "<td align='center' colspan='5'><font face='arial'>".
858: &mt($type)."</font></td></tr>");
859: }
860: $r->print($output);
861: }
862: }
863: }
864: }
865:
866: sub findcourse_advice {
867: my ($r) = @_;
868: my $domdesc = &Apache::lonnet::domain($env{'user.domain'},'description');
869: if (&check_autoenroll($env{'user.domain'})) {
870: $r->print(&mt('If you were expecting to see an active role listed for a particular course in the [_1] domain, it may be missing for one of the following reasons:',$domdesc).'
871: <ul>
872: <li>'.&mt('The course has yet to be created.').'</li>
873: <li>'.&mt('Automatic enrollment of registered students has not been enabled for the course.').'</li>
874: <li>'.&mt('You are in a section of course for which automatic enrollment in the corresponding LON-CAPA course is not active.').'</li>
875: <li>'.&mt('The start date for automated enrollment has yet to be reached.').'</li>
876: <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>
877: </ul>');
878: } else {
879: $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 />');
880: }
881: $r->print('<p>'.&mt('The [_1]Course Catalog[_2] provides information about all [_3] classes for which LON-CAPA courses have been created.','<a href="/adm/coursecatalog">','</a>',$domdesc).'<br />');
882: $r->print(&mt('You can search the course catalog for courses which permit self-enrollment, if you would like to enroll in a course.').'</p>');
883: return;
884: }
885:
886: sub privileges_info {
887: my ($which) = @_;
888: my $output;
889:
890: $which ||= $env{'request.role'};
891:
892: foreach my $envkey (sort(keys(%env))) {
893: next if ($envkey!~/^user\.priv\.\Q$which\E\.(.*)/);
894:
895: my $where=$1;
896: my $ttype;
897: my $twhere;
898: my (undef,$tdom,$trest,$tsec)=split(m{/},$where);
899: if ($trest) {
900: if ($env{'course.'.$tdom.'_'.$trest.'.description'} eq 'ca') {
901: $ttype='Construction Space';
902: $twhere='User: '.$trest.', Domain: '.$tdom;
903: } else {
904: $ttype= &Apache::loncommon::course_type($tdom.'_'.$trest);
905: $twhere=$env{'course.'.$tdom.'_'.$trest.'.description'};
906: if ($tsec) {
907: my $sec_type = 'Section';
908: if (exists($env{"user.role.gr.$where"})) {
909: $sec_type = 'Group';
910: }
911: $twhere.=' ('.$sec_type.': '.$tsec.')';
912: }
913: }
914: } elsif ($tdom) {
915: $ttype='Domain';
916: $twhere=$tdom;
917: } else {
918: $ttype='System';
919: $twhere='/';
920: }
921: $output .= "\n<h3>".$ttype.': '.$twhere.'</h3>'."\n<ul>";
922: foreach my $priv (sort(split(/:/,$env{$envkey}))) {
923: next if (!$priv);
924:
925: my ($prv,$restr)=split(/\&/,$priv);
926: my $trestr='';
927: if ($restr ne 'F') {
928: $trestr.=' ('.
929: join(', ',
930: map { &Apache::lonnet::plaintext($_) }
931: (split('',$restr))).') ';
932: }
933: $output .= "\n\t".
934: '<li>'.&Apache::lonnet::plaintext($prv).$trestr.'</li>';
935: }
936: $output .= "\n".'</ul>';
937: }
938: return $output;
939: }
940:
941: sub role_status {
942: my ($rolekey,$then,$now,$role,$where,$trolecode,$tstatus,$tstart,$tend) = @_;
943: my @pwhere = ();
944: if (exists($env{$rolekey}) && $env{$rolekey} ne '') {
945: (undef,undef,$$role,@pwhere)=split(/\./,$rolekey);
946: unless (!defined($$role) || $$role eq '') {
947: $$where=join('.',@pwhere);
948: $$trolecode=$$role.'.'.$$where;
949: ($$tstart,$$tend)=split(/\./,$env{$rolekey});
950: $$tstatus='is';
951: if ($$tstart && $$tstart>$then) {
952: $$tstatus='future';
953: if ($$tstart<$now) { $$tstatus='will'; }
954: }
955: if ($$tend) {
956: if ($$tend<$then) {
957: $$tstatus='expired';
958: } elsif ($$tend<$now) {
959: $$tstatus='will_not';
960: }
961: }
962: }
963: }
964: }
965:
966: sub build_roletext {
967: my ($trolecode,$tdom,$trest,$tstatus,$tryagain,$advanced,$tremark,$tbg,$tfont,$trole,$twhere,$tpstart,$tpend,$nochoose,$button,$switchserver) = @_;
968: my $roletext='<tr bgcolor="'.$tbg.'" class="LC_rolesmenu_'.$tstatus.'">';
969: my $is_dc=($trolecode =~ m/^dc\./);
970: my $rowspan=($is_dc) ? ''
971: : ' rowspan="2" ';
972:
973: unless ($nochoose) {
974: my $buttonname=$trolecode;
975: $buttonname=~s/\W//g;
976: if (!$button) {
977: if ($switchserver) {
978: $roletext.='<td'.$rowspan.'><span class="LC_rolesinfo"><a href="/adm/switchserver?'.
979: $switchserver.'">'.&mt('Switch Server').'</a></span></td>';
980: } else {
981: $roletext.=('<td'.$rowspan.'> </td>');
982: }
983: } elsif ($tstatus eq 'is') {
984: $roletext.='<td'.$rowspan.'><input name="'.$buttonname.'" type="button" value="'.
985: &mt('Select').'" onClick="javascript:enterrole(this.form,\''.
986: $trolecode."','".$buttonname.'\');" /></td>';
987: } elsif ($tryagain) {
988: $roletext.=
989: '<td'.$rowspan.'><input name="'.$buttonname.'" type="button" value="'.
990: &mt('Try Selecting Again').'" onClick="javascript:enterrole(this.form,\''.
991: $trolecode."','".$buttonname.'\');" /></td>';
992: } elsif ($advanced) {
993: $roletext.=
994: '<td'.$rowspan.'><input name="'.$buttonname.'" type="button" value="'.
995: &mt('Re-Initialize').'" onClick="javascript:enterrole(this.form,\''.
996: $trolecode."','".$buttonname.'\');" /></td>';
997: } else {
998: $roletext.='<td'.$rowspan.'> </td>';
999: }
1000: }
1001: if ($trolecode !~ m/^(dc|ca|au|aa)\./) {
1002: $tremark.=&Apache::lonannounce::showday(time,1,
1003: &Apache::lonannounce::readcalendar($tdom.'_'.$trest));
1004: }
1005: $roletext.='<td><font color="'.$tfont.'">'.$trole.
1006: '</font></td><td><font color="'.$tfont.'">'.$twhere.
1007: '</font></td><td><font color="'.$tfont.'">'.$tpstart.
1008: '</font></td><td><font color="'.$tfont.'">'.$tpend.
1009: '</font></td></tr>';
1010: if (!$is_dc) {
1011: $roletext.='<tr bgcolor="'.$tbg.'"><td colspan="4"><font color="'.$tfont.'"><span class="LC_rolesinfo">'.$tremark.
1012: '</span> </font></td></tr><tr><td colspan="5" height="3"></td></tr>'."\n";
1013: }
1014: return $roletext;
1015: }
1016:
1017: sub check_author_homeserver {
1018: my ($uname,$udom)=@_;
1019: if (($uname eq '') || ($udom eq '')) {
1020: return ('fail','');
1021: }
1022: my $home = &Apache::lonnet::homeserver($uname,$udom);
1023: if (&Apache::lonnet::host_domain($home) ne $udom) {
1024: return ('fail',$home);
1025: }
1026: my @ids=&Apache::lonnet::current_machine_ids();
1027: if (grep(/^\Q$home\E$/,@ids)) {
1028: return ('ok',$home);
1029: } else {
1030: return ('switchserver',$home);
1031: }
1032: }
1033:
1034: sub check_privs {
1035: my ($cdom,$cnum,$then,$now,$checkrole) = @_;
1036: my $cckey = 'user.role.'.$checkrole.'./'.$cdom.'/'.$cnum;
1037: if ($env{$cckey}) {
1038: my ($role,$where,$trolecode,$tstart,$tend,$tremark,$tstatus,$tpstart,$tpend,$tfont);
1039: &role_status($cckey,$then,$now,\$role,\$where,\$trolecode,\$tstatus,\$tstart,\$tend);
1040: unless (($tstatus eq 'is') || ($tstatus eq 'will_not')) {
1041: &set_privileges($cdom,$cnum,$checkrole);
1042: }
1043: } else {
1044: &set_privileges($cdom,$cnum,$checkrole);
1045: }
1046: }
1047:
1048: sub check_fordc {
1049: my ($dcroles,$then) = @_;
1050: my $numdc = 0;
1051: if ($env{'user.adv'}) {
1052: foreach my $envkey (sort keys %env) {
1053: if ($envkey=~/^user\.role\.dc\.\/($match_domain)\/$/) {
1054: my $dcdom = $1;
1055: my $livedc = 1;
1056: my ($tstart,$tend)=split(/\./,$env{$envkey});
1057: if ($tstart && $tstart>$then) { $livedc = 0; }
1058: if ($tend && $tend <$then) { $livedc = 0; }
1059: if ($livedc) {
1060: $$dcroles{$dcdom} = $envkey;
1061: $numdc++;
1062: }
1063: }
1064: }
1065: }
1066: return $numdc;
1067: }
1068:
1069: sub adhoc_course_role {
1070: my ($then) = @_;
1071: my ($cdom,$cnum);
1072: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
1073: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
1074: if (&check_forcc($cdom,$cnum,$then)) {
1075: my $setprivs;
1076: if (!defined($env{'user.role.'.$env{'form.selectrole'}})) {
1077: $setprivs = 1;
1078: } else {
1079: my ($start,$end) = split(/\./,$env{'user.role.'.$env{'form.selectrole'}});
1080: if (($start && ($start>$then || $start == -1)) ||
1081: ($end && $end<$then)) {
1082: $setprivs = 1;
1083: }
1084: }
1085: if ($setprivs) {
1086: if ($env{'form.switchrole'} =~ m-^(in|ta|ep|ad|st|cr)([\w/]*)\./\Q$cdom\E/\Q$cnum\E(/?\w*)$-) {
1087: my $role = $1;
1088: my $custom_role = $2;
1089: my $usec = $3;
1090: if ($role eq 'cr') {
1091: if ($custom_role =~ m-^$match_domain/$match_courseid/\w+$-) {
1092: $role .= $custom_role;
1093: } else {
1094: return;
1095: }
1096: }
1097: my (%userroles,%newrole,%newgroups);
1098: my $area = '/'.$cdom.'/'.$cnum;
1099: my $spec = $role.'.'.$area;
1100: if ($usec ne '') {
1101: $spec .= '/'.$usec;
1102: $area .= '/'.$usec;
1103: }
1104: &Apache::lonnet::standard_roleprivs(\%newrole,$role,$cdom,$spec,$cnum,$area);
1105: &Apache::lonnet::set_userprivs(\%userroles,\%newrole,%newgroups);
1106: my $adhocstart = $then-1;
1107: $userroles{'user.role.'.$spec} = $adhocstart.'.';
1108: &Apache::lonnet::appenv(\%userroles,[$role,'cm']);
1109: }
1110: }
1111: }
1112: return;
1113: }
1114:
1115: sub check_forcc {
1116: my ($cdom,$cnum,$then) = @_;
1117: my $is_cc;
1118: if ($cdom ne '' && $cnum ne '') {
1119: if (&Apache::lonnet::is_course($cdom,$cnum)) {
1120: my $envkey = 'user.role.cc./'.$cdom.'/'.$cnum;
1121: if (defined($env{$envkey})) {
1122: $is_cc = 1;
1123: my ($tstart,$tend)=split(/\./,$env{$envkey});
1124: if ($tstart && $tstart>$then) { $is_cc = 0; }
1125: if ($tend && $tend <$then) { $is_cc = 0; }
1126: }
1127: }
1128: }
1129: return $is_cc;
1130: }
1131:
1132: sub courselink {
1133: my ($dcdom,$rowtype) = @_;
1134: my $courseform=&Apache::loncommon::selectcourse_link
1135: ('rolechoice','dccourse'.$rowtype.'_'.$dcdom,
1136: 'dcdomain'.$rowtype.'_'.$dcdom,'coursedesc'.$rowtype.'_'.
1137: $dcdom,$dcdom,undef);
1138: my $hiddenitems = '<input type="hidden" name="dcdomain'.$rowtype.'_'.$dcdom.'" value="'.$dcdom.'" />'.
1139: '<input type="hidden" name="origdom'.$rowtype.'_'.$dcdom.'" value="'.$dcdom.'" />'.
1140: '<input type="hidden" name="dccourse'.$rowtype.'_'.$dcdom.'" value="" />'.
1141: '<input type="hidden" name="coursedesc'.$rowtype.'_'.$dcdom.'" value="" />';
1142: return $courseform.$hiddenitems;
1143: }
1144:
1145: sub coursepick_jscript {
1146: my %lt = &Apache::lonlocal::texthash(
1147: plsu => "Please use the 'Select Course' link to open a separate pick course window where you may select the course you wish to enter.",
1148: youc => 'You can only use this screen to select courses in the current domain.',
1149: );
1150: my $verify_script = <<"END";
1151: <script type="text/javascript">
1152: function verifyCoursePick(caller) {
1153: var numbutton = getIndex(caller)
1154: var pickedCourse = document.rolechoice.elements[numbutton+4].value
1155: var pickedDomain = document.rolechoice.elements[numbutton+2].value
1156: if (document.rolechoice.elements[numbutton+2].value == document.rolechoice.elements[numbutton+3].value) {
1157: if (pickedCourse != '') {
1158: if (numbutton != -1) {
1159: var courseTarget = "cc./"+pickedDomain+"/"+pickedCourse
1160: document.rolechoice.elements[numbutton+1].name = courseTarget
1161: document.rolechoice.submit()
1162: }
1163: }
1164: else {
1165: alert("$lt{'plsu'}");
1166: }
1167: }
1168: else {
1169: alert("$lt{'youc'}")
1170: }
1171: }
1172: function getIndex(caller) {
1173: for (var i=0;i<document.rolechoice.elements.length;i++) {
1174: if (document.rolechoice.elements[i] == caller) {
1175: return i;
1176: }
1177: }
1178: return -1;
1179: }
1180: </script>
1181: END
1182: return $verify_script;
1183: }
1184:
1185: sub coauthorlink {
1186: my ($dcdom,$rowtype) = @_;
1187: my $coauthorform=&Apache::loncommon::selectauthor_link('rolechoice',$dcdom);
1188: my $hiddenitems = '<input type="hidden" name="adhoccauname'.$rowtype.'_'.$dcdom.'" value="" />';
1189: return $coauthorform.$hiddenitems;
1190: }
1191:
1192: sub display_cc_role {
1193: my $rolekey = shift;
1194: my $roletext;
1195: my $advanced = $env{'user.adv'};
1196: my $tryagain = $env{'form.tryagain'};
1197: unless ($rolekey =~/^error\:/) {
1198: if ($rolekey =~ m-^user\.role.cc\./($match_domain)/($match_courseid)$-) {
1199: my $tcourseid = $1.'_'.$2;
1200: my $trolecode = 'cc./'.$1.'/'.$2;
1201: my $twhere;
1202: my $ttype;
1203: my $tbg='#77FF77';
1204: my $tfont='#003300';
1205: my %newhash=&Apache::lonnet::coursedescription($tcourseid);
1206: if (%newhash) {
1207: $twhere=$newhash{'description'}.
1208: ' <font size="-2">'.
1209: &Apache::loncommon::syllabuswrapper(&mt('Syllabus'),$2,$1,$tfont).
1210: '</font>';
1211: $ttype = $newhash{'type'};
1212: } else {
1213: $twhere=&mt('Currently not available');
1214: $env{'course.'.$tcourseid.'.description'}=$twhere;
1215: }
1216: my $trole = &Apache::lonnet::plaintext('cc',$ttype);
1217: $twhere.="<br />".&mt('Domain').":".$1;
1218: $roletext = &build_roletext($trolecode,$1,$2,'is',$tryagain,$advanced,'',$tbg,$tfont,$trole,$twhere,'','','',1,'');
1219: }
1220: }
1221: return ($roletext);
1222: }
1223:
1224: sub adhoc_roles_row {
1225: my ($dcdom,$rowtype) = @_;
1226: my $output = '<tr bgcolor="#77FF77">'.
1227: ' <td colspan="5"><table><tr><td><span class="LC_rolesinfo">'
1228: .&mt('[_1]Ad hoc[_2] roles in domain [_3] --',
1229: '<span class="LC_cusr_emph">','</span>',$dcdom).'</span></td><td>';
1230: my $selectcclink = &courselink($dcdom,$rowtype);
1231: my $ccrole = &Apache::lonnet::plaintext('cc');
1232: my $carole = &Apache::lonnet::plaintext('ca');
1233: my $selectcalink = &coauthorlink($dcdom,$rowtype);
1234: $output.= '<span class="LC_rolesinfo">'.
1235: &mt('[_1]: [_2]',$ccrole,$selectcclink).
1236: '</span><br /></td><td> </td><td><span class="LC_rolesinfo">'.
1237: &mt('[_1]: [_2]',$carole,$selectcalink).
1238: '</span><br /></td></tr></table></td></tr>'.
1239: '<tr><td colspan="5" height="3"></td></tr>'."\n";
1240: return $output;
1241: }
1242:
1243: sub recent_filename {
1244: my $area=shift;
1245: return 'nohist_recent_'.&escape($area);
1246: }
1247:
1248: sub set_privileges {
1249: # role can be cc or ca
1250: my ($dcdom,$pickedcourse,$role) = @_;
1251: my $area = '/'.$dcdom.'/'.$pickedcourse;
1252: my $spec = $role.'.'.$area;
1253: my %userroles = &Apache::lonnet::set_arearole($role,$area,'','',
1254: $env{'user.domain'},
1255: $env{'user.name'});
1256: my %ccrole = ();
1257: &Apache::lonnet::standard_roleprivs(\%ccrole,$role,$dcdom,$spec,$pickedcourse,$area);
1258: my ($author,$adv)= &Apache::lonnet::set_userprivs(\%userroles,\%ccrole);
1259: &Apache::lonnet::appenv(\%userroles,[$role,'cm']);
1260:
1261: &Apache::lonnet::log($env{'user.domain'},
1262: $env{'user.name'},
1263: $env{'user.home'},
1264: "Role ".$role);
1265: &Apache::lonnet::appenv(
1266: {'request.role' => $spec,
1267: 'request.role.domain' => $dcdom,
1268: 'request.course.sec' => ''});
1269: my $tadv=0;
1270: if (&Apache::lonnet::allowed('adv') eq 'F') { $tadv=1; }
1271: &Apache::lonnet::appenv({'request.role.adv' => $tadv});
1272: }
1273:
1274: sub courseloadpage {
1275: my ($courseid) = @_;
1276: my $startpage;
1277: my %entry_settings = &Apache::lonnet::get('nohist_whatsnew',
1278: [$courseid.':courseinit']);
1279: my ($tmp) = %entry_settings;
1280: unless ($tmp =~ /^error: 2 /) {
1281: $startpage = $entry_settings{$courseid.':courseinit'};
1282: }
1283: if ($startpage eq '') {
1284: if (exists($env{'environment.course_init_display'})) {
1285: $startpage = $env{'environment.course_init_display'};
1286: }
1287: }
1288: return $startpage;
1289: }
1290:
1291: sub check_autoenroll {
1292: my ($dom) = @_;
1293: my $run_enroll = 0;
1294: my $settings;
1295: my %domconfig =
1296: &Apache::lonnet::get_dom('configuration',['autoenroll'],$dom);
1297: if (ref($domconfig{'autoenroll'}) eq 'HASH') {
1298: $settings = $domconfig{'autoenroll'};
1299: if ($settings->{'run'} eq '1') {
1300: $run_enroll = 1;
1301: }
1302: } else {
1303: $run_enroll = &localenroll::run($dom);
1304: }
1305: return $run_enroll;
1306: }
1307:
1308:
1309: 1;
1310: __END__
1311:
1312: =head1 NAME
1313:
1314: Apache::lonroles - User Roles Screen
1315:
1316: =head1 SYNOPSIS
1317:
1318: Invoked by /etc/httpd/conf/srm.conf:
1319:
1320: <Location /adm/roles>
1321: PerlAccessHandler Apache::lonacc
1322: SetHandler perl-script
1323: PerlHandler Apache::lonroles
1324: ErrorDocument 403 /adm/login
1325: ErrorDocument 500 /adm/errorhandler
1326: </Location>
1327:
1328: =head1 OVERVIEW
1329:
1330: =head2 Choosing Roles
1331:
1332: C<lonroles> is a handler that allows a user to switch roles in
1333: mid-session. LON-CAPA attempts to work with "No Role Specified", the
1334: default role that a user has before selecting a role, as widely as
1335: possible, but certain handlers for example need specification which
1336: course they should act on, etc. Both in this scenario, and when the
1337: handler determines via C<lonnet>'s C<&allowed> function that a certain
1338: action is not allowed, C<lonroles> is used as error handler. This
1339: allows the user to select another role which may have permission to do
1340: what they were trying to do. C<lonroles> can also be accessed via the
1341: B<CRS> button in the Remote Control.
1342:
1343: =begin latex
1344:
1345: \begin{figure}
1346: \begin{center}
1347: \includegraphics[width=0.45\paperwidth,keepaspectratio]{Sample_Roles_Screen}
1348: \caption{\label{Sample_Roles_Screen}Sample Roles Screen}
1349: \end{center}
1350: \end{figure}
1351:
1352: =end latex
1353:
1354: =head2 Role Initialization
1355:
1356: 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.
1357:
1358: =head1 INTRODUCTION
1359:
1360: This module enables a user to select what role he wishes to
1361: operate under (instructor, student, teaching assistant, course
1362: coordinator, etc). These roles are pre-established by the actions
1363: of upper-level users.
1364:
1365: This is part of the LearningOnline Network with CAPA project
1366: described at http://www.lon-capa.org.
1367:
1368: =head1 HANDLER SUBROUTINE
1369:
1370: This routine is called by Apache and mod_perl.
1371:
1372: =over 4
1373:
1374: =item *
1375:
1376: Roles Initialization (yes/no)
1377:
1378: =item *
1379:
1380: Get Error Message from Environment
1381:
1382: =item *
1383:
1384: Who is this?
1385:
1386: =item *
1387:
1388: Generate Page Output
1389:
1390: =item *
1391:
1392: Choice or no choice
1393:
1394: =item *
1395:
1396: Table
1397:
1398: =item *
1399:
1400: Privileges
1401:
1402: =back
1403:
1404: =cut
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