Annotation of loncom/auth/lonroles.pm, revision 1.123
1.1 harris41 1: # The LearningOnline Network with CAPA
2: # User Roles Screen
1.31 www 3: #
1.123 ! www 4: # $Id: lonroles.pm,v 1.122 2005/06/06 22:39:59 raeburn Exp $
1.31 www 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: #
1.32 harris41 28: ###
1.22 harris41 29:
1.1 harris41 30: package Apache::lonroles;
31:
32: use strict;
1.118 albertel 33: use Apache::lonnet;
1.7 www 34: use Apache::lonuserstate();
1.1 harris41 35: use Apache::Constants qw(:common);
1.2 www 36: use Apache::File();
1.26 www 37: use Apache::lonmenu;
1.29 albertel 38: use Apache::loncommon;
1.104 raeburn 39: use Apache::lonhtmlcommon;
1.57 www 40: use Apache::lonannounce;
1.72 www 41: use Apache::lonlocal;
1.120 albertel 42: use GDBM_File;
1.1 harris41 43:
1.62 matthew 44: sub redirect_user {
1.95 albertel 45: my ($r,$title,$url,$msg,$launch_nav) = @_;
1.62 matthew 46: $msg = $title if (! defined($msg));
1.73 www 47: &Apache::loncommon::content_type($r,'text/html');
1.62 matthew 48: &Apache::loncommon::no_cache($r);
49: $r->send_http_header;
50: my $swinfo=&Apache::lonmenu::rawconfig();
1.96 albertel 51: my $navwindow;
1.95 albertel 52: if ($launch_nav eq 'on') {
1.96 albertel 53: $navwindow.=&Apache::lonnavmaps::launch_win('now');
54: } else {
55: $navwindow.=&Apache::lonnavmaps::close();
1.95 albertel 56: }
1.62 matthew 57: my $bodytag=&Apache::loncommon::bodytag('Switching Role');
1.92 www 58: # Note to style police:
59: # This must only replace the spaces, nothing else, or it bombs elsewhere.
60: $url=~s/ /\%20/g;
1.93 albertel 61: $r->print(<<ENDREDIR);
1.62 matthew 62: <head><title>$title</title>
63: <meta HTTP-EQUIV="Refresh" CONTENT="1; url=$url">
64: </head>
65: <html>
66: $bodytag
1.96 albertel 67: <script type="text/javascript">
1.62 matthew 68: $swinfo
69: </script>
1.96 albertel 70: $navwindow
1.62 matthew 71: <h1>$msg</h1>
1.95 albertel 72: <a href="$url">Continue</a>
1.62 matthew 73: </body>
74: </html>
75: ENDREDIR
76: return;
77: }
78:
1.1 harris41 79: sub handler {
1.10 www 80:
1.1 harris41 81: my $r = shift;
82:
1.6 www 83: my $now=time;
1.118 albertel 84: my $then=$env{'user.login.time'};
1.6 www 85: my $envkey;
1.107 raeburn 86: my %dcroles = ();
87: my $numdc = &check_fordc(\%dcroles,$then);
1.10 www 88:
1.6 www 89: # ================================================================== Roles Init
1.118 albertel 90: if ($env{'form.selectrole'}) {
91: if ($env{'request.course.id'}) {
92: my %temp=('logout_'.$env{'request.course.id'} => time);
1.33 www 93: &Apache::lonnet::put('email_status',\%temp);
1.118 albertel 94: &Apache::lonnet::delenv('user.state.'.$env{'request.course.id'});
1.100 albertel 95: }
1.55 albertel 96: &Apache::lonnet::appenv("request.course.id" => '',
97: "request.course.fn" => '',
98: "request.course.uri" => '',
99: "request.course.sec" => '',
100: "request.role" => 'cm',
1.118 albertel 101: "request.role.adv" => $env{'user.adv'},
102: "request.role.domain" => $env{'user.domain'});
1.106 raeburn 103:
1.110 raeburn 104: # Check if user is a DC trying to enter a course and needs privs to be created
1.107 raeburn 105: if ($numdc > 0) {
1.118 albertel 106: foreach my $envkey (keys %env) {
1.107 raeburn 107: if ($envkey =~ m-^form\.cc\./(\w+)/(\w+)$-) {
108: if ($dcroles{$1}) {
1.109 raeburn 109: my $cckey = 'user.role.cc./'.$1.'/'.$2;
1.110 raeburn 110: &check_privs($cckey,$then,$now);
1.107 raeburn 111: }
112: last;
113: }
114: }
115: }
116:
1.118 albertel 117: foreach $envkey (keys %env) {
1.40 matthew 118: next if ($envkey!~/^user\.role\./);
1.102 raeburn 119: my ($where,$trolecode,$role,$tstatus,$tend,$tstart);
120: &role_status($envkey,$then,$now,\$role,\$where,\$trolecode,\$tstatus,\$tstart,\$tend);
1.118 albertel 121: if ($env{'form.'.$trolecode}) {
1.55 albertel 122: if ($tstatus eq 'is') {
123: $where=~s/^\///;
124: my ($cdom,$cnum,$csec)=split(/\//,$where);
1.111 albertel 125: # store role if recent_role list being kept
1.118 albertel 126: if ($env{'environment.recentroles'}) {
1.111 albertel 127: &Apache::lonhtmlcommon::store_recent('roles',
128: $trolecode,' ');
129: }
130:
131:
1.53 www 132: # check for keyed access
1.55 albertel 133: if (($role eq 'st') &&
1.118 albertel 134: ($env{'course.'.$cdom.'_'.$cnum.'.keyaccess'} eq 'yes')) {
1.89 www 135: # who is key authority?
136: my $authdom=$cdom;
137: my $authnum=$cnum;
1.118 albertel 138: if ($env{'course.'.$cdom.'_'.$cnum.'.keyauth'}) {
1.89 www 139: ($authnum,$authdom)=
1.118 albertel 140: split(/\W/,$env{'course.'.$cdom.'_'.$cnum.'.keyauth'});
1.89 www 141: }
142: # check with key authority
143: unless (&Apache::lonnet::validate_access_key(
1.118 albertel 144: $env{'environment.key.'.$cdom.'_'.$cnum},
1.89 www 145: $authdom,$authnum)) {
1.53 www 146: # there is no valid key
1.118 albertel 147: if ($env{'form.newkey'}) {
1.53 www 148: # student attempts to register a new key
1.89 www 149: &Apache::loncommon::content_type($r,'text/html');
150: &Apache::loncommon::no_cache($r);
151: $r->send_http_header;
152: my $swinfo=&Apache::lonmenu::rawconfig();
153: my $bodytag=&Apache::loncommon::bodytag
154: ('Verifying Access Key to Unlock this Course');
1.90 www 155: my $buttontext=&mt('Enter Course');
156: my $message=&mt('Successfully registered key');
157: my $assignresult=
158: &Apache::lonnet::assign_access_key(
1.118 albertel 159: $env{'form.newkey'},
1.90 www 160: $authdom,$authnum,
1.91 www 161: $cdom,$cnum,
1.118 albertel 162: $env{'user.domain'},
163: $env{'user.name'},
1.90 www 164: 'Assigned from '.$ENV{'REMOTE_ADDR'}.' at '.localtime().' for '.
165: $trolecode);
166: unless ($assignresult eq 'ok') {
167: $assignresult=~s/^error\:\s*//;
168: $message=&mt($assignresult).
169: '<br /><a href="/adm/logout">'.
1.89 www 170: &mt('Logout').'</a>';
1.90 www 171: $buttontext=&mt('Re-Enter Key');
172: }
1.89 www 173: $r->print(<<ENDENTEREDKEY);
174: <head><title>Verifying Course Access Key</title>
175: </head>
176: <html>
177: $bodytag
178: <script>
179: $swinfo
180: </script>
181: <form method="post">
182: <input type="hidden" name="selectrole" value="1" />
183: <input type="hidden" name="$trolecode" value="1" />
1.90 www 184: <font size="+2">$message</font><br />
1.89 www 185: <input type="submit" value="$buttontext" />
186: </form>
187: </body></html>
188: ENDENTEREDKEY
189: return OK;
1.55 albertel 190: } else {
1.53 www 191: # print form to enter a new key
1.73 www 192: &Apache::loncommon::content_type($r,'text/html');
1.55 albertel 193: &Apache::loncommon::no_cache($r);
194: $r->send_http_header;
195: my $swinfo=&Apache::lonmenu::rawconfig();
196: my $bodytag=&Apache::loncommon::bodytag
197: ('Enter Access Key to Unlock this Course');
198: $r->print(<<ENDENTERKEY);
1.53 www 199: <head><title>Entering Course Access Key</title>
200: </head>
201: <html>
202: $bodytag
203: <script>
204: $swinfo
205: </script>
206: <form method="post">
1.89 www 207: <input type="hidden" name="selectrole" value="1" />
208: <input type="hidden" name="$trolecode" value="1" />
1.118 albertel 209: <input type="text" size="20" name="newkey" value="$env{'form.newkey'}" />
1.53 www 210: <input type="submit" value="Enter key" />
211: </form>
212: </body></html>
213: ENDENTERKEY
1.55 albertel 214: return OK;
215: }
216: }
217: }
1.118 albertel 218: &Apache::lonnet::log($env{'user.domain'},
219: $env{'user.name'},
220: $env{'user.home'},
1.87 www 221: "Role ".$trolecode);
1.101 albertel 222:
1.56 www 223: &Apache::lonnet::appenv(
1.101 albertel 224: 'request.role' => $trolecode,
1.56 www 225: 'request.role.domain' => $cdom,
226: 'request.course.sec' => $csec);
1.101 albertel 227: my $tadv=0;
1.72 www 228: my $msg=&mt('Entering course ...');
1.62 matthew 229:
1.55 albertel 230: if (($cnum) && ($role ne 'ca')) {
231: my ($furl,$ferr)=
232: &Apache::lonuserstate::readmap($cdom.'/'.$cnum);
1.118 albertel 233: if (($env{'form.orgurl'}) &&
234: ($env{'form.orgurl'}!~/^\/adm\/flip/)) {
235: my $dest=$env{'form.orgurl'};
1.117 albertel 236: if (&Apache::lonnet::allowed('adv') eq 'F') { $tadv=1; }
237: &Apache::lonnet::appenv('request.role.adv'=>$tadv);
1.67 albertel 238: $r->internal_redirect($dest);
1.55 albertel 239: return OK;
240: } else {
1.118 albertel 241: unless ($env{'request.course.id'}) {
1.55 albertel 242: &Apache::lonnet::appenv(
243: "request.course.id" => $cdom.'_'.$cnum);
1.61 www 244: $furl='/adm/roles?tryagain=1';
1.55 albertel 245: $msg=
1.72 www 246: '<h1><font color=red>'.
247: &mt('Could not initialize course at this time.').
248: '</font></h1><h3>'.&mt('Please try again.').'</h3>'.$ferr;
1.55 albertel 249: }
1.117 albertel 250: if (&Apache::lonnet::allowed('adv') eq 'F') { $tadv=1; }
251: &Apache::lonnet::appenv('request.role.adv'=>$tadv);
1.58 bowersj2 252:
253: # Check to see if the user is a CC entering a course
254: # for the first time
255: my (undef, undef, $role, $courseid) = split(/\./, $envkey);
256: if (substr($courseid, 0, 1) eq '/') {
257: $courseid = substr($courseid, 1);
258: }
259: $courseid =~ s/\//_/;
1.118 albertel 260: if ($role eq 'cc' && $env{'course.' . $courseid .
1.58 bowersj2 261: '.course.helper.not.run'}) {
262: $furl = "/adm/helper/course.initialization.helper";
263: }
1.62 matthew 264: # Send the user to the course they selected
1.123 ! www 265: if (($env{'request.course.fn'})
! 266: && ($role eq 'cc' && ($env{'environment.course_init_display'} ne 'firstres'))) {
1.122 raeburn 267: $msg = &mt('Entering course ....');
268: &redirect_user($r,&mt('New in course'),
269: '/adm/whatsnew',$msg,
270: $env{'environment.remotenavmap'});
271: } else {
272: &redirect_user($r,&mt('Entering Course'),
1.95 albertel 273: $furl,$msg,
1.118 albertel 274: $env{'environment.remotenavmap'});
1.122 raeburn 275: }
1.20 www 276: return OK;
1.55 albertel 277: }
278: }
1.62 matthew 279: #
280: # Send the user to the construction space they selected
281: if ($role =~ /^(au|ca)$/) {
282: my $redirect_url = '/priv/';
283: if ($role eq 'au') {
1.118 albertel 284: $redirect_url.=$env{'user.name'};
1.62 matthew 285: } else {
286: $where =~ /\/(.*)$/;
287: $redirect_url .= $1;
288: }
289: $redirect_url .= '/';
1.78 sakharuk 290: &redirect_user($r,&mt('Entering Construction Space'),
1.62 matthew 291: $redirect_url);
292: return OK;
293: }
1.104 raeburn 294: if ($role eq 'dc') {
1.108 raeburn 295: my $redirect_url = '/adm/menu/';
296: &redirect_user($r,&mt('Loading Domain Coordinator Menu'),
1.104 raeburn 297: $redirect_url);
1.108 raeburn 298: return OK;
1.104 raeburn 299: }
1.55 albertel 300: }
301: }
1.6 www 302: }
1.40 matthew 303: }
1.44 www 304:
1.10 www 305:
1.6 www 306: # =============================================================== No Roles Init
1.10 www 307:
1.73 www 308: &Apache::loncommon::content_type($r,'text/html');
1.30 albertel 309: &Apache::loncommon::no_cache($r);
1.10 www 310: $r->send_http_header;
311: return OK if $r->header_only;
312:
1.52 www 313: my $swinfo=&Apache::lonmenu::rawconfig();
1.41 www 314: my $bodytag=&Apache::loncommon::bodytag('User Roles');
1.94 albertel 315: my $helptag='<table><tr><td>'.&Apache::loncommon::help_open_menu('','General Intro','General_Intro','User Roles',1,undef,undef,undef,undef,,&mt("Click here for help")).'</td></td></tr></table>';
1.10 www 316: $r->print(<<ENDHEADER);
317: <html>
318: <head>
319: <title>LON-CAPA User Roles</title>
1.41 www 320: </head>
321: $bodytag
1.45 www 322: $helptag<br />
1.26 www 323: <script>
324: $swinfo
325: window.focus();
326: </script>
1.10 www 327: ENDHEADER
1.6 www 328:
1.2 www 329: # ------------------------------------------ Get Error Message from Environment
330:
1.118 albertel 331: my ($fn,$priv,$nochoose,$error,$msg)=split(/:/,$env{'user.error.msg'});
332: if ($env{'user.error.msg'}) {
1.55 albertel 333: $r->log_reason(
1.118 albertel 334: "$msg for $env{'user.name'} domain $env{'user.domain'} access $priv",$fn);
1.12 www 335: }
1.1 harris41 336:
1.61 www 337: # ------------------------------------------------- Can this user re-init, etc?
1.6 www 338:
1.118 albertel 339: my $advanced=$env{'user.adv'};
1.61 www 340: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},['tryagain']);
1.118 albertel 341: my $tryagain=$env{'form.tryagain'};
1.6 www 342:
1.2 www 343: # -------------------------------------------------------- Generate Page Output
1.6 www 344: # --------------------------------------------------------------- Error Header?
1.2 www 345: if ($error) {
346: $r->print("<h1>LON-CAPA Access Control</h1>");
1.4 www 347: $r->print("<hr><pre>Access : ".
348: Apache::lonnet::plaintext($priv)."\n");
1.115 albertel 349: $r->print("Resource: ".&Apache::lonenc::check_encrypt($fn)."\n");
1.120 albertel 350: $r->print("Action : $msg\n</pre><hr />");
351: my $url=$fn;
352: my $last;
353: if (tie(my %hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
354: &GDBM_READER(),0640)) {
355: $last=$hash{'last_known'};
356: untie(%hash);
357: }
358: if ($last) { $fn.='?symb='.&Apache::lonnet::escape($last); }
359:
360: &Apache::londocs::changewarning($r,undef,'You have modified your course recently, [_1] may fix this access problem.',
361: &Apache::lonenc::check_encrypt($fn));
1.2 www 362: } else {
1.118 albertel 363: if ($env{'user.error.msg'}) {
1.25 www 364: $r->print(
1.72 www 365: '<h3><font color=red>'.
366: &mt('You need to choose another user role or enter a specific course for this function').'</font></h3>');
1.25 www 367: }
1.2 www 368: }
1.6 www 369: # -------------------------------------------------------- Choice or no choice?
1.2 www 370: if ($nochoose) {
1.6 www 371: if ($advanced) {
1.72 www 372: $r->print("<h2>".&mt('Assigned User Roles')."</h2>\n");
1.6 www 373: } else {
1.72 www 374: $r->print("<h2>".&mt('Sorry ...')."</h2>\n".
375: &mt('This resource might be part of'));
1.118 albertel 376: if ($env{'request.course.id'}) {
1.72 www 377: $r->print(&mt(' another'));
1.55 albertel 378: } else {
1.72 www 379: $r->print(&mt(' a certain'));
1.55 albertel 380: }
1.72 www 381: $r->print(&mt(' course.').'</body></html>');
1.55 albertel 382: return OK;
1.6 www 383: }
384: } else {
385: if ($advanced) {
1.72 www 386: $r->print(&mt("Your home server is ").
1.55 albertel 387: $Apache::lonnet::hostname{&Apache::lonnet::homeserver
1.118 albertel 388: ($env{'user.name'},$env{'user.domain'})}.
1.55 albertel 389: "<br />\n");
1.72 www 390: $r->print(&mt(
391: "Author and Co-Author roles may not be available on servers other than your home server."));
1.17 www 392: }
1.18 www 393: if (($ENV{'REDIRECT_QUERY_STRING'}) && ($fn)) {
394: $fn.='?'.$ENV{'REDIRECT_QUERY_STRING'};
1.6 www 395: }
1.84 www 396: $r->print('<form method="post" name="rolechoice" action="'.(($fn)?$fn:$r->uri).'">');
1.116 albertel 397: $r->print('<input type="hidden" name="orgurl" value="'.$fn.'" />');
398: $r->print('<input type="hidden" name="selectrole" value="1" />');
1.6 www 399: }
1.118 albertel 400: if ($env{'user.adv'}) {
1.63 www 401: $r->print(
1.116 albertel 402: '<br /><label>'.&mt('Show all roles').': <input type="checkbox" name="showall"');
1.118 albertel 403: if ($env{'form.showall'}) { $r->print(' checked="checked" '); }
1.116 albertel 404: $r->print(' /></label><input type="submit" value="'.&mt('Display').'" />');
1.63 www 405: }
1.4 www 406:
1.75 albertel 407: my (%roletext,%sortrole,%roleclass);
1.84 www 408: my $countactive=0;
409: my $inrole=0;
410: my $possiblerole='';
1.118 albertel 411: foreach $envkey (sort keys %env) {
1.35 matthew 412: my $button = 1;
1.49 www 413: my $switchserver='';
1.75 albertel 414: my $roletext;
415: my $sortkey;
1.2 www 416: if ($envkey=~/^user\.role\./) {
1.102 raeburn 417: my ($role,$where,$trolecode,$tstart,$tend,$tremark,$tstatus,$tpstart,$tpend,$tfont);
418: &role_status($envkey,$then,$now,\$role,\$where,\$trolecode,\$tstatus,\$tstart,\$tend);
1.46 matthew 419: next if (!defined($role) || $role eq '');
1.102 raeburn 420: $tremark='';
421: $tpstart=' ';
422: $tpend=' ';
423: $tfont='#000000';
1.4 www 424: if ($tstart) {
1.74 www 425: $tpstart=&Apache::lonlocal::locallocaltime($tstart);
1.4 www 426: }
427: if ($tend) {
1.74 www 428: $tpend=&Apache::lonlocal::locallocaltime($tend);
1.4 www 429: }
1.118 albertel 430: if ($env{'request.role'} eq $trolecode) {
1.6 www 431: $tstatus='selected';
432: }
1.4 www 433: my $tbg;
1.35 matthew 434: if (($tstatus eq 'is') || ($tstatus eq 'selected') ||
1.118 albertel 435: ($env{'form.showall'})) {
1.35 matthew 436: if ($tstatus eq 'is') {
437: $tbg='#77FF77';
1.47 www 438: $tfont='#003300';
1.84 www 439: $possiblerole=$trolecode;
440: $countactive++;
1.35 matthew 441: } elsif ($tstatus eq 'future') {
442: $tbg='#FFFF77';
1.49 www 443: $button=0;
1.35 matthew 444: } elsif ($tstatus eq 'will') {
445: $tbg='#FFAA77';
1.72 www 446: $tremark.=&mt('Active at next login. ');
1.35 matthew 447: } elsif ($tstatus eq 'expired') {
448: $tbg='#FF7777';
1.47 www 449: $tfont='#330000';
1.49 www 450: $button=0;
1.35 matthew 451: } elsif ($tstatus eq 'will_not') {
452: $tbg='#AAFF77';
1.72 www 453: $tremark.=&mt('Expired after logout. ');
1.35 matthew 454: } elsif ($tstatus eq 'selected') {
455: $tbg='#11CC55';
1.47 www 456: $tfont='#002200';
1.84 www 457: $inrole=1;
1.86 albertel 458: $countactive++;
1.72 www 459: $tremark.=&mt('Currently selected. ');
1.35 matthew 460: }
461: my $trole;
462: if ($role =~ /^cr\//) {
463: my ($rdummy,$rdomain,$rauthor,$rrole)=split(/\//,$role);
1.72 www 464: $tremark.='<br>'.&mt('Defined by ').$rauthor.
465: &mt(' at ').$rdomain.'.';
1.35 matthew 466: $trole=$rrole;
1.8 www 467: } else {
1.35 matthew 468: $trole=Apache::lonnet::plaintext($role);
469: }
470: my $ttype;
471: my $twhere;
472: my ($tdom,$trest,$tsection)=
473: split(/\//,Apache::lonnet::declutter($where));
474: # First, Co-Authorship roles
475: if ($role eq 'ca') {
1.39 stredwic 476: my $home = &Apache::lonnet::homeserver($trest,$tdom);
1.83 albertel 477: my $allowed=0;
478: my @ids=&Apache::lonnet::current_machine_ids();
479: foreach my $id (@ids) { if ($id eq $home) { $allowed=1; } }
480: if (!$allowed) {
1.49 www 481: $button=0;
1.51 www 482: $switchserver=&Apache::lonnet::escape('http://'.
483: $Apache::lonnet::hostname{$home}.
1.118 albertel 484: '/adm/login?domain='.$env{'user.domain'}.
485: '&username='.$env{'user.name'}.
1.97 albertel 486: '&firsturl=/priv/'.$trest.'/');
1.49 www 487: }
1.35 matthew 488: #next if ($home eq 'no_host');
489: $home = $Apache::lonnet::hostname{$home};
1.78 sakharuk 490: $ttype='Construction Space';
1.72 www 491: $twhere=&mt('User').': '.$trest.'<br />'.&mt('Domain').
492: ': '.$tdom.'<br />'.
493: ' '.&mt('Server').': '.$home;
1.118 albertel 494: $env{'course.'.$tdom.'_'.$trest.'.description'}='ca';
1.82 www 495: $tremark.=&Apache::lonhtmlcommon::authorbombs('/res/'.$tdom.'/'.$trest.'/');
1.75 albertel 496: $sortkey=$role."$trest:$tdom";
1.35 matthew 497: } elsif ($role eq 'au') {
498: # Authors
499: my $home = &Apache::lonnet::homeserver
1.118 albertel 500: ($env{'user.name'},$env{'user.domain'});
1.83 albertel 501: my $allowed=0;
502: my @ids=&Apache::lonnet::current_machine_ids();
503: foreach my $id (@ids) { if ($id eq $home) { $allowed=1; } }
504: if (!$allowed) {
1.49 www 505: $button=0;
1.51 www 506: $switchserver=&Apache::lonnet::escape('http://'.
507: $Apache::lonnet::hostname{$home}.
1.118 albertel 508: '/adm/login?domain='.$env{'user.domain'}.
509: '&username='.$env{'user.name'}.
510: '&firsturl=/priv/'.$env{'user.name'}.'/');
1.49 www 511: }
1.35 matthew 512: #next if ($home eq 'no_host');
513: $home = $Apache::lonnet::hostname{$home};
1.78 sakharuk 514: $ttype='Construction Space';
1.72 www 515: $twhere=&mt('Domain').': '.$tdom.'<br />'.&mt('Server').
516: ': '.$home;
1.118 albertel 517: $env{'course.'.$tdom.'_'.$trest.'.description'}='ca';
518: $tremark.=&Apache::lonhtmlcommon::authorbombs('/res/'.$tdom.'/'.$env{'user.name'}.'/');
1.75 albertel 519: $sortkey=$role;
1.35 matthew 520: } elsif ($trest) {
1.78 sakharuk 521: $ttype='Course';
1.35 matthew 522: my $tcourseid=$tdom.'_'.$trest;
1.118 albertel 523: if ($env{'course.'.$tcourseid.'.description'}) {
524: $twhere=$env{'course.'.$tcourseid.'.description'};
1.80 albertel 525: $sortkey=$role."\0".$tdom."\0".$twhere."\0".$envkey;
1.72 www 526: unless ($twhere eq &mt('Currently not available')) {
1.55 albertel 527: $twhere.=' <font size="-2">'.
1.72 www 528: &Apache::loncommon::syllabuswrapper(&mt('Syllabus'),$trest,$tdom,$tfont).
1.49 www 529: '</font>';
1.55 albertel 530: }
1.8 www 531: } else {
1.105 raeburn 532: my %newhash=&Apache::lonnet::coursedescription($tcourseid);
1.35 matthew 533: if (%newhash) {
1.80 albertel 534: $sortkey=$role."\0".$tdom."\0".$newhash{'description'}.
1.77 albertel 535: "\0".$envkey;
1.49 www 536: $twhere=$newhash{'description'}.
537: ' <font size="-2">'.
1.72 www 538: &Apache::loncommon::syllabuswrapper(&mt('Syllabus'),$trest,$tdom,$tfont).
1.49 www 539: '</font>';
1.35 matthew 540: } else {
1.72 www 541: $twhere=&mt('Currently not available');
1.118 albertel 542: $env{'course.'.$tcourseid.'.description'}=$twhere;
1.80 albertel 543: $sortkey=$role."\0".$tdom."\0".$twhere."\0".$envkey;
1.35 matthew 544: }
1.8 www 545: }
1.121 albertel 546: if ($tsection) {
547: $twhere.='<br />'.&mt('Section/Group').': '.$tsection;
548: }
549:
1.72 www 550: if ($role ne 'st') { $twhere.="<br />".&mt('Domain').":".$tdom; }
1.35 matthew 551: } elsif ($tdom) {
1.78 sakharuk 552: $ttype='Domain';
1.35 matthew 553: $twhere=$tdom;
1.75 albertel 554: $sortkey=$role.$twhere;
1.35 matthew 555: } else {
1.78 sakharuk 556: $ttype='System';
1.72 www 557: $twhere=&mt('system wide');
1.75 albertel 558: $sortkey=$role.$twhere;
1.13 www 559: }
1.35 matthew 560:
1.110 raeburn 561: $roletext.=&build_roletext($trolecode,$tdom,$trest,$tstatus,$tryagain,$advanced,$tremark,$tbg,$tfont,$trole,$ttype,$twhere,$tpstart,$tpend,$nochoose,$button,$switchserver);
1.75 albertel 562: $roletext{$envkey}=$roletext;
563: if (!$sortkey) {$sortkey=$twhere."\0".$envkey;}
564: $sortrole{$sortkey}=$envkey;
565: $roleclass{$envkey}=$ttype;
1.55 albertel 566: }
1.4 www 567: }
1.75 albertel 568: }
1.84 www 569: # No active roles
570: if ($countactive==0) {
571: if ($inrole) {
572: $r->print('<h2>'.&mt('Currently no additional roles or courses').'</h2>');
573: } else {
574: $r->print('<h2>'.&mt('Currently no active roles or courses').'</h2>');
575: }
576: $r->print('</form></body></html>');
577: return OK;
578: # Is there only one choice?
1.118 albertel 579: } elsif (($countactive==1) && ($env{'request.role'} eq 'cm')) {
1.84 www 580: $r->print('<h3>'.&mt('Please stand by.').'</h3>'.
581: '<input type="hidden" name="'.$possiblerole.'" value="1" />');
582: $r->print("</form>\n");
583: $r->rflush();
584: $r->print('<script>document.forms.rolechoice.submit();</script>');
585: $r->print('</body></html>');
586: return OK;
587: }
588: # More than one possible role
589: # ----------------------------------------------------------------------- Table
590: unless (($advanced) || ($nochoose)) {
591: $r->print("<h2>".&mt('Select a Course to Enter')."</h2>\n");
592: }
593: $r->print('<br /><table><tr>');
594: unless ($nochoose) { $r->print('<th> </th>'); }
1.121 albertel 595: $r->print('<th>'.&mt('User Role').'</th><th>'.&mt('Extent').
1.84 www 596: '</th><th>'.&mt('Start').'</th><th>'.&mt('End').'</th><th>'.
1.99 www 597: &mt('Remarks and Calendar Announcements').'</th></tr>'."\n");
1.76 albertel 598: my $doheaders=-1;
1.78 sakharuk 599: foreach my $type ('Construction Space','Course','Domain','System') {
1.76 albertel 600: my $haverole=0;
1.75 albertel 601: foreach my $which (sort {uc($a) cmp uc($b)} (keys(%sortrole))) {
602: if ($roleclass{$sortrole{$which}} =~ /^\Q$type\E/) {
1.76 albertel 603: $haverole=1;
1.75 albertel 604: }
1.76 albertel 605: }
606: if ($haverole) { $doheaders++; }
607: }
1.111 albertel 608:
1.118 albertel 609: if ($env{'environment.recentroles'}) {
1.111 albertel 610: my %recent_roles =
1.118 albertel 611: &Apache::lonhtmlcommon::get_recent('roles',$env{'environment.recentrolesn'});
1.111 albertel 612: my $output='';
613: foreach (sort(keys(%recent_roles))) {
614: if (defined($roletext{'user.role.'.$_})) {
615: $output.=$roletext{'user.role.'.$_};
1.113 raeburn 616: } elsif ($numdc > 0) {
617: unless ($_ =~/^error\:/) {
618: $output.=&display_cc_role('user.role.'.$_);
619: }
620: }
1.111 albertel 621: }
622: if ($output) {
1.121 albertel 623: $r->print("<tr bgcolor='#BBffBB'><td align='center' colspan='6'>".
1.111 albertel 624: &mt('Recent Roles')."</td>");
625: $r->print($output);
626: $r->print("</tr>");
1.114 raeburn 627: $doheaders ++;
1.111 albertel 628: }
629: }
630:
1.104 raeburn 631: if ($numdc > 0) {
1.112 raeburn 632: $r->print(&coursepick_jscript());
633: $r->print(&Apache::loncommon::coursebrowser_javascript());
1.108 raeburn 634: }
635: foreach my $type ('Construction Space','Course','Domain','System') {
636: my $output;
637: foreach my $which (sort {uc($a) cmp uc($b)} (keys(%sortrole))) {
638: if ($roleclass{$sortrole{$which}} =~ /^\Q$type\E/) {
639: $output.=$roletext{$sortrole{$which}};
640: if ($sortrole{$which} =~ m-dc\./(\w+)/-) {
641: if ($dcroles{$1}) {
642: $output .= &allcourses_row($1);
1.104 raeburn 643: }
644: }
1.76 albertel 645: }
1.108 raeburn 646: }
647: if ($output) {
648: if ($doheaders > 0) {
649: $r->print("<tr bgcolor='#BBffBB'>".
1.121 albertel 650: "<td align='center' colspan='6'>".&mt($type)."</td></tr>");
1.76 albertel 651: }
1.108 raeburn 652: $r->print($output);
653: }
1.4 www 654: }
1.14 www 655: my $tremark='';
1.47 www 656: my $tfont='#003300';
1.118 albertel 657: if ($env{'request.role'} eq 'cm') {
1.19 www 658: $r->print('<tr bgcolor="#11CC55">');
1.72 www 659: $tremark=&mt('Currently selected. ');
1.47 www 660: $tfont='#002200';
1.14 www 661: } else {
662: $r->print('<tr bgcolor="#77FF77">');
663: }
664: unless ($nochoose) {
1.118 albertel 665: if ($env{'request.role'} ne 'cm') {
1.72 www 666: $r->print('<td><input type=submit value="'.
667: &mt('Select').'" name="cm"></td>');
1.55 albertel 668: } else {
669: $r->print('<td> </td>');
670: }
1.14 www 671: }
1.121 albertel 672: $r->print('<td colspan="4"><font color="'.$tfont.'">'.&mt('No role specified').
1.47 www 673: '</font></td><td><font color="'.$tfont.'">'.$tremark.
674: ' </font></td></tr>'."\n");
1.4 www 675:
676: $r->print('</table>');
677: unless ($nochoose) {
678: $r->print("</form>\n");
679: }
1.22 harris41 680: # ------------------------------------------------------------ Privileges Info
1.118 albertel 681: if (($advanced) && (($env{'user.error.msg'}) || ($error))) {
1.55 albertel 682: $r->print('<hr><h2>Current Privileges</h2>');
1.4 www 683:
1.118 albertel 684: foreach $envkey (sort keys %env) {
685: if ($envkey=~/^user\.priv\.$env{'request.role'}\./) {
1.55 albertel 686: my $where=$envkey;
1.118 albertel 687: $where=~s/^user\.priv\.$env{'request.role'}\.//;
1.55 albertel 688: my $ttype;
689: my $twhere;
690: my ($tdom,$trest,$tsec)=
691: split(/\//,Apache::lonnet::declutter($where));
692: if ($trest) {
1.118 albertel 693: if ($env{'course.'.$tdom.'_'.$trest.'.description'} eq 'ca') {
1.55 albertel 694: $ttype='Construction Space';
695: $twhere='User: '.$trest.', Domain: '.$tdom;
696: } else {
697: $ttype='Course';
1.118 albertel 698: $twhere=$env{'course.'.$tdom.'_'.$trest.'.description'};
1.55 albertel 699: if ($tsec) {
700: $twhere.=' (Section/Group: '.$tsec.')';
701: }
702: }
703: } elsif ($tdom) {
704: $ttype='Domain';
705: $twhere=$tdom;
706: } else {
707: $ttype='System';
708: $twhere='/';
709: }
710: $r->print("\n<h3>".$ttype.': '.$twhere.'</h3><ul>');
1.118 albertel 711: foreach (sort split(/:/,$env{$envkey})) {
1.55 albertel 712: if ($_) {
713: my ($prv,$restr)=split(/\&/,$_);
714: my $trestr='';
715: if ($restr ne 'F') {
716: my $i;
717: $trestr.=' (';
718: for ($i=0;$i<length($restr);$i++) {
719: $trestr.=
720: Apache::lonnet::plaintext(substr($restr,$i,1));
721: if ($i<length($restr)-1) { $trestr.=', '; }
722: }
723: $trestr.=')';
724: }
725: $r->print('<li>'.
726: Apache::lonnet::plaintext($prv).$trestr.
727: '</li>');
728: }
729: }
730: $r->print('</ul>');
731: }
732: }
1.4 www 733: }
1.66 www 734: $r->print(&Apache::lonnet::getannounce());
1.65 www 735: if ($advanced) {
736: $r->print('<p><small><i>This is LON-CAPA '.
1.85 www 737: $r->dir_config('lonVersion').'</i><br />'.
738: '<a href="/adm/logout">'.&mt('Logout').'</a></small></p>');
1.65 www 739: }
1.1 harris41 740: $r->print("</body></html>\n");
741: return OK;
1.102 raeburn 742: }
743:
744: sub role_status {
745: my ($rolekey,$then,$now,$role,$where,$trolecode,$tstatus,$tstart,$tend) = @_;
746: my @pwhere = ();
1.118 albertel 747: if (exists($env{$rolekey}) && $env{$rolekey} ne '') {
1.102 raeburn 748: (undef,undef,$$role,@pwhere)=split(/\./,$rolekey);
749: unless (!defined($$role) || $$role eq '') {
750: $$where=join('.',@pwhere);
751: $$trolecode=$$role.'.'.$$where;
1.118 albertel 752: ($$tstart,$$tend)=split(/\./,$env{$rolekey});
1.102 raeburn 753: $$tstatus='is';
1.105 raeburn 754: if ($$tstart && $$tstart>$then) {
755: $$tstatus='future';
756: if ($$tstart<$now) { $$tstatus='will'; }
1.102 raeburn 757: }
758: if ($$tend) {
759: if ($$tend<$then) {
760: $$tstatus='expired';
1.103 raeburn 761: } elsif ($$tend<$now) {
1.104 raeburn 762: $$tstatus='will_not';
1.102 raeburn 763: }
764: }
765: }
766: }
767: }
1.1 harris41 768:
1.110 raeburn 769: sub build_roletext {
770: my ($trolecode,$tdom,$trest,$tstatus,$tryagain,$advanced,$tremark,$tbg,$tfont,$trole,$ttype,$twhere,$tpstart,$tpend,$nochoose,$button,$switchserver) = @_;
1.112 raeburn 771: my $roletext='<tr bgcolor="'.$tbg.'">';
1.110 raeburn 772: unless ($nochoose) {
773: if (!$button) {
774: if ($switchserver) {
775: $roletext.='<td><a href="/adm/logout?handover='.
776: $switchserver.'">'.&mt('Switch Server').'</a></td>';
777: } else {
778: $roletext.=('<td> </td>');
779: }
780: } elsif ($tstatus eq 'is') {
781: $roletext.=('<td><input type=submit value="'.
782: &mt('Select').'" name="'.
783: $trolecode.'"></td>');
784: } elsif ($tryagain) {
785: $roletext.=
786: '<td><input type=submit value="'.
787: &mt('Try Selecting Again').'" name="'.$trolecode.'"></td>';
788: } elsif ($advanced) {
789: $roletext.=
790: '<td><input type=submit value="'.
791: &mt('Re-Initialize').'" name="'.$trolecode.'"></td>';
792: } else {
793: $roletext.='<td> </td>';
794: }
795: }
796: $tremark.=&Apache::lonannounce::showday(time,1,
797: &Apache::lonannounce::readcalendar($tdom.'_'.$trest));
798:
799:
800: $roletext.='<td><font color="'.$tfont.'">'.$trole.
1.121 albertel 801: '</font></td><td><font color="'.$tfont.'">'.$twhere.
1.110 raeburn 802: '</font></td><td><font color="'.$tfont.'">'.$tpstart.
803: '</font></td><td><font color="'.$tfont.'">'.$tpend.
804: '</font></td><td><font color="'.$tfont.'">'.$tremark.
805: ' </font></td></tr>'."\n";
806: return $roletext;
807: }
808:
809: sub check_privs {
810: my ($cckey,$then,$now) = @_;
1.118 albertel 811: if ($env{$cckey}) {
1.110 raeburn 812: my ($role,$where,$trolecode,$tstart,$tend,$tremark,$tstatus,$tpstart,$tpend,$tfont);
813: &role_status($cckey,$then,$now,\$role,\$where,\$trolecode,\$tstatus,\$tstart,\$tend);
814: unless (($tstatus eq 'is') || ($tstatus eq 'will_not')) {
815: &set_privileges($1,$2);
816: }
817: } else {
818: &set_privileges($1,$2);
819: }
820: }
821:
1.104 raeburn 822: sub check_fordc {
823: my ($dcroles,$then) = @_;
824: my $numdc = 0;
1.118 albertel 825: if ($env{'user.adv'}) {
826: foreach my $envkey (sort keys %env) {
1.104 raeburn 827: if ($envkey=~/^user\.role\.dc\.\/(\w+)\/$/) {
828: my $dcdom = $1;
829: my $livedc = 1;
1.118 albertel 830: my ($tstart,$tend)=split(/\./,$env{$envkey});
1.105 raeburn 831: if ($tstart && $tstart>$then) { $livedc = 0; }
832: if ($tend && $tend <$then) { $livedc = 0; }
1.104 raeburn 833: if ($livedc) {
834: $$dcroles{$dcdom} = $envkey;
1.105 raeburn 835: $numdc++;
1.104 raeburn 836: }
837: }
838: }
839: }
840: return $numdc;
841: }
842:
1.108 raeburn 843: sub courselink {
844: my ($dcdom) = @_;
1.109 raeburn 845: my $courseform=&Apache::loncommon::selectcourse_link
1.112 raeburn 846: ('rolechoice','dccourse_'.$dcdom,'dcdomain_'.$dcdom,'coursedesc_'.$dcdom,$dcdom);
1.109 raeburn 847: my $hiddenitems = '<input type="hidden" name="dcdomain_'.$dcdom.'" value="'.$dcdom.'" />'.
848: '<input type="hidden" name="origdom_'.$dcdom.'" value="'.$dcdom.'" />'.
849: '<input type="hidden" name="dccourse_'.$dcdom.'" value="" />'.
850: '<input type="hidden" name="coursedesc_'.$dcdom.'" value="" />';
1.112 raeburn 851: return $courseform.$hiddenitems;
1.109 raeburn 852: }
853:
854: sub coursepick_jscript {
1.104 raeburn 855: my $verify_script = <<"END";
856: <script>
1.108 raeburn 857: function verifyCoursePick(caller) {
858: var numbutton = getIndex(caller)
1.112 raeburn 859: var pickedCourse = document.rolechoice.elements[numbutton+4].value
860: var pickedDomain = document.rolechoice.elements[numbutton+2].value
861: if (document.rolechoice.elements[numbutton+2].value == document.rolechoice.elements[numbutton+3].value) {
1.104 raeburn 862: if (pickedCourse != '') {
1.108 raeburn 863: if (numbutton != -1) {
864: var courseTarget = "cc./"+pickedDomain+"/"+pickedCourse
865: document.rolechoice.elements[numbutton+1].name = courseTarget
866: document.rolechoice.submit()
867: }
1.104 raeburn 868: }
869: else {
1.114 raeburn 870: alert("Please use the 'Select Course' link to open a separate pick course window where you may select the course you wish to enter.");
1.104 raeburn 871: }
872: }
873: else {
874: alert("You can only use this screen to select courses in the current domain")
875: }
876: }
1.109 raeburn 877: function getIndex(caller) {
1.108 raeburn 878: for (var i=0;i<document.rolechoice.elements.length;i++) {
1.109 raeburn 879: if (document.rolechoice.elements[i] == caller) {
1.108 raeburn 880: return i;
881: }
882: }
883: return -1;
884: }
1.104 raeburn 885: </script>
886: END
1.109 raeburn 887: return $verify_script;
1.104 raeburn 888: }
889:
1.109 raeburn 890: sub processpick {
891: my $dcdom = shift;
892: my $process_pick = <<"END";
893: <script>
894: function process_pick(dom) {
895: var numbutton = getIndex(dom)
896: var pickedCourse = opener.document.rolechoice.dccourse_$dcdom.value
897: var pickedDomain = opener.document.rolechoice.dcdomain_$dcdom.value
898: if (opener.document.rolechoice.dcdomain_$dcdom.value == opener.document.rolechoice.origdom_$dcdom.value) {
899: if (pickedCourse != '') {
900: if (numbutton != -1) {
901: var courseTarget = "cc./"+pickedDomain+"/"+pickedCourse
902: opener.document.rolechoice.elements[numbutton+1].name = courseTarget
903: opener.document.rolechoice.submit()
904: }
905: }
906: }
907: }
908:
909: function getIndex(dom) {
910: var callername = 'ccpick_'+dom
911: for (var i=0;i<opener.document.rolechoice.elements.length;i++) {
912: var elemname = opener.document.rolechoice.elements[i].name
913: if (elemname == callername) {
914: return i;
915: }
916: }
917: return -1;
918: }
919: </script>
920: END
921: return $process_pick;
922: }
1.108 raeburn 923:
1.113 raeburn 924: sub display_cc_role {
925: my $rolekey = shift;
926: my $roletext;
1.118 albertel 927: my $advanced = $env{'user.adv'};
928: my $tryagain = $env{'form.tryagain'};
1.113 raeburn 929: unless ($rolekey =~/^error\:/) {
930: if ($rolekey =~ m-^user\.role.cc\./(\w+)/(\w+)$-) {
931: my $tcourseid = $1.'_'.$2;
932: my $trolecode = 'cc./'.$1.'/'.$2;
933: my $trole = Apache::lonnet::plaintext('cc');
934: my $twhere;
935: my $tbg='#77FF77';
936: my $tfont='#003300';
937: my %newhash=&Apache::lonnet::coursedescription($tcourseid);
938: if (%newhash) {
939: $twhere=$newhash{'description'}.
940: ' <font size="-2">'.
941: &Apache::loncommon::syllabuswrapper(&mt('Syllabus'),$2,$1,$tfont).
942: '</font>';
943: } else {
944: $twhere=&mt('Currently not available');
1.118 albertel 945: $env{'course.'.$tcourseid.'.description'}=$twhere;
1.110 raeburn 946: }
1.113 raeburn 947: $twhere.="<br />".&mt('Domain').":".$1;
948: $roletext = &build_roletext($trolecode,$1,$2,'is',$tryagain,$advanced,'',$tbg,$tfont,$trole,&mt('Course'),$twhere,'','','',1,'');
1.104 raeburn 949: }
950: }
1.113 raeburn 951: return $roletext;
1.104 raeburn 952: }
953:
1.108 raeburn 954: sub allcourses_row {
1.109 raeburn 955: my $dcdom = shift;
1.108 raeburn 956: my $ccrole = Apache::lonnet::plaintext('cc');
957: my $selectlink = &courselink($dcdom);
958: my $output = '<tr bgcolor="#77FF77">'.
959: '<td><input type="button" value="'.
1.109 raeburn 960: &mt('Select').'" name="ccpick_'.$dcdom.'"'.
1.108 raeburn 961: 'onClick="verifyCoursePick(this)">'.
962: '<input type="hidden" name="pick_'.$dcdom.'" value="1"></td>'.
963: '<td><font color="#002200">'.
1.121 albertel 964: $ccrole.'</font></td>'.
1.108 raeburn 965: '<td><font color="#002200">'.&mt('All courses').':<b> '.
966: $selectlink.'</b>'.
967: '<br />'.&mt('Domain').':'.$dcdom.'</font>'.
1.121 albertel 968: '<td colspan="3"><font color="#002200">'.
1.108 raeburn 969: &mt('Course Coordinator access to all courses in domain').
970: ': <b>'.$dcdom.'</b></font></td></tr>'."\n";
971: return $output;
972: }
973:
1.104 raeburn 974: sub recent_filename {
975: my $area=shift;
976: return 'nohist_recent_'.&Apache::lonnet::escape($area);
977: }
978:
1.106 raeburn 979: sub set_privileges {
980: my ($dcdom,$pickedcourse) = @_;
981: my $area = '/'.$dcdom.'/'.$pickedcourse;
982: my $role = 'cc';
983: my $spec = $role.'.'.$area;
1.118 albertel 984: my $userroles = &Apache::lonnet::set_arearole($role,$area,'','',$dcdom,$env{'user.name'});
1.106 raeburn 985: my %ccrole = ();
986: &Apache::lonnet::standard_roleprivs(\%ccrole,$role,$dcdom,$spec,$pickedcourse,$area);
1.107 raeburn 987: my ($author,$adv)= &Apache::lonnet::set_userprivs(\$userroles,\%ccrole);
988: my @newprivs = split/\n/,$userroles;
1.106 raeburn 989: my %newccroles = ();
990: foreach (@newprivs) {
991: my ($key,$val) = split/=/,$_;
992: $newccroles{$key} = $val;
993: }
994: &Apache::lonnet::appenv(%newccroles);
1.118 albertel 995: &Apache::lonnet::log($env{'user.domain'},
996: $env{'user.name'},
997: $env{'user.home'},
1.106 raeburn 998: "Role ".$role);
999: &Apache::lonnet::appenv(
1000: 'request.role' => $role,
1001: 'request.role.domain' => $dcdom,
1002: 'request.course.sec' => '');
1003: my $tadv=0;
1004: if (&Apache::lonnet::allowed('adv') eq 'F') { $tadv=1; }
1005: &Apache::lonnet::appenv('request.role.adv' => $tadv);
1006: }
1007:
1.1 harris41 1008: 1;
1009: __END__
1.32 harris41 1010:
1011: =head1 NAME
1012:
1013: Apache::lonroles - User Roles Screen
1014:
1015: =head1 SYNOPSIS
1016:
1017: Invoked by /etc/httpd/conf/srm.conf:
1018:
1019: <Location /adm/roles>
1020: PerlAccessHandler Apache::lonacc
1021: SetHandler perl-script
1022: PerlHandler Apache::lonroles
1023: ErrorDocument 403 /adm/login
1024: ErrorDocument 500 /adm/errorhandler
1025: </Location>
1.64 bowersj2 1026:
1027: =head1 OVERVIEW
1028:
1029: =head2 Choosing Roles
1030:
1031: C<lonroles> is a handler that allows a user to switch roles in
1032: mid-session. LON-CAPA attempts to work with "No Role Specified", the
1033: default role that a user has before selecting a role, as widely as
1034: possible, but certain handlers for example need specification which
1035: course they should act on, etc. Both in this scenario, and when the
1036: handler determines via C<lonnet>'s C<&allowed> function that a certain
1037: action is not allowed, C<lonroles> is used as error handler. This
1038: allows the user to select another role which may have permission to do
1039: what they were trying to do. C<lonroles> can also be accessed via the
1040: B<CRS> button in the Remote Control.
1041:
1042: =begin latex
1043:
1044: \begin{figure}
1045: \begin{center}
1046: \includegraphics[width=0.45\paperwidth,keepaspectratio]{Sample_Roles_Screen}
1047: \caption{\label{Sample_Roles_Screen}Sample Roles Screen}
1048: \end{center}
1049: \end{figure}
1050:
1051: =end latex
1052:
1053: =head2 Role Initialization
1054:
1055: 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.
1.32 harris41 1056:
1057: =head1 INTRODUCTION
1058:
1059: This module enables a user to select what role he wishes to
1060: operate under (instructor, student, teaching assistant, course
1061: coordinator, etc). These roles are pre-established by the actions
1062: of upper-level users.
1063:
1064: This is part of the LearningOnline Network with CAPA project
1065: described at http://www.lon-capa.org.
1066:
1067: =head1 HANDLER SUBROUTINE
1068:
1069: This routine is called by Apache and mod_perl.
1070:
1071: =over 4
1072:
1073: =item *
1074:
1075: Roles Initialization (yes/no)
1076:
1077: =item *
1078:
1079: Get Error Message from Environment
1080:
1081: =item *
1082:
1083: Who is this?
1084:
1085: =item *
1086:
1087: Generate Page Output
1088:
1089: =item *
1090:
1091: Choice or no choice
1092:
1093: =item *
1094:
1095: Table
1096:
1097: =item *
1098:
1099: Privileges
1100:
1101: =back
1102:
1103: =cut
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