Annotation of loncom/auth/lonroles.pm, revision 1.122
1.1 harris41 1: # The LearningOnline Network with CAPA
2: # User Roles Screen
1.31 www 3: #
1.122 ! raeburn 4: # $Id: lonroles.pm,v 1.121 2005/06/05 07:57:28 albertel 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: $furl = "/adm/helper/course.initialization.helper";
263: }
1.62 matthew 264: # Send the user to the course they selected
1.122 ! raeburn 265: if (($env{'request.course.fn'}) && ($role eq 'cc' && ($env{'environment.course_init_display'} ne 'firstres')) {
! 266: $msg = &mt('Entering course ....');
! 267: &redirect_user($r,&mt('New in course'),
! 268: '/adm/whatsnew',$msg,
! 269: $env{'environment.remotenavmap'});
! 270: } else {
! 271: &redirect_user($r,&mt('Entering Course'),
1.95 albertel 272: $furl,$msg,
1.118 albertel 273: $env{'environment.remotenavmap'});
1.122 ! raeburn 274: }
1.20 www 275: return OK;
1.55 albertel 276: }
277: }
1.62 matthew 278: #
279: # Send the user to the construction space they selected
280: if ($role =~ /^(au|ca)$/) {
281: my $redirect_url = '/priv/';
282: if ($role eq 'au') {
1.118 albertel 283: $redirect_url.=$env{'user.name'};
1.62 matthew 284: } else {
285: $where =~ /\/(.*)$/;
286: $redirect_url .= $1;
287: }
288: $redirect_url .= '/';
1.78 sakharuk 289: &redirect_user($r,&mt('Entering Construction Space'),
1.62 matthew 290: $redirect_url);
291: return OK;
292: }
1.104 raeburn 293: if ($role eq 'dc') {
1.108 raeburn 294: my $redirect_url = '/adm/menu/';
295: &redirect_user($r,&mt('Loading Domain Coordinator Menu'),
1.104 raeburn 296: $redirect_url);
1.108 raeburn 297: return OK;
1.104 raeburn 298: }
1.55 albertel 299: }
300: }
1.6 www 301: }
1.40 matthew 302: }
1.44 www 303:
1.10 www 304:
1.6 www 305: # =============================================================== No Roles Init
1.10 www 306:
1.73 www 307: &Apache::loncommon::content_type($r,'text/html');
1.30 albertel 308: &Apache::loncommon::no_cache($r);
1.10 www 309: $r->send_http_header;
310: return OK if $r->header_only;
311:
1.52 www 312: my $swinfo=&Apache::lonmenu::rawconfig();
1.41 www 313: my $bodytag=&Apache::loncommon::bodytag('User Roles');
1.94 albertel 314: 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 315: $r->print(<<ENDHEADER);
316: <html>
317: <head>
318: <title>LON-CAPA User Roles</title>
1.41 www 319: </head>
320: $bodytag
1.45 www 321: $helptag<br />
1.26 www 322: <script>
323: $swinfo
324: window.focus();
325: </script>
1.10 www 326: ENDHEADER
1.6 www 327:
1.2 www 328: # ------------------------------------------ Get Error Message from Environment
329:
1.118 albertel 330: my ($fn,$priv,$nochoose,$error,$msg)=split(/:/,$env{'user.error.msg'});
331: if ($env{'user.error.msg'}) {
1.55 albertel 332: $r->log_reason(
1.118 albertel 333: "$msg for $env{'user.name'} domain $env{'user.domain'} access $priv",$fn);
1.12 www 334: }
1.1 harris41 335:
1.61 www 336: # ------------------------------------------------- Can this user re-init, etc?
1.6 www 337:
1.118 albertel 338: my $advanced=$env{'user.adv'};
1.61 www 339: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},['tryagain']);
1.118 albertel 340: my $tryagain=$env{'form.tryagain'};
1.6 www 341:
1.2 www 342: # -------------------------------------------------------- Generate Page Output
1.6 www 343: # --------------------------------------------------------------- Error Header?
1.2 www 344: if ($error) {
345: $r->print("<h1>LON-CAPA Access Control</h1>");
1.4 www 346: $r->print("<hr><pre>Access : ".
347: Apache::lonnet::plaintext($priv)."\n");
1.115 albertel 348: $r->print("Resource: ".&Apache::lonenc::check_encrypt($fn)."\n");
1.120 albertel 349: $r->print("Action : $msg\n</pre><hr />");
350: my $url=$fn;
351: my $last;
352: if (tie(my %hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
353: &GDBM_READER(),0640)) {
354: $last=$hash{'last_known'};
355: untie(%hash);
356: }
357: if ($last) { $fn.='?symb='.&Apache::lonnet::escape($last); }
358:
359: &Apache::londocs::changewarning($r,undef,'You have modified your course recently, [_1] may fix this access problem.',
360: &Apache::lonenc::check_encrypt($fn));
1.2 www 361: } else {
1.118 albertel 362: if ($env{'user.error.msg'}) {
1.25 www 363: $r->print(
1.72 www 364: '<h3><font color=red>'.
365: &mt('You need to choose another user role or enter a specific course for this function').'</font></h3>');
1.25 www 366: }
1.2 www 367: }
1.6 www 368: # -------------------------------------------------------- Choice or no choice?
1.2 www 369: if ($nochoose) {
1.6 www 370: if ($advanced) {
1.72 www 371: $r->print("<h2>".&mt('Assigned User Roles')."</h2>\n");
1.6 www 372: } else {
1.72 www 373: $r->print("<h2>".&mt('Sorry ...')."</h2>\n".
374: &mt('This resource might be part of'));
1.118 albertel 375: if ($env{'request.course.id'}) {
1.72 www 376: $r->print(&mt(' another'));
1.55 albertel 377: } else {
1.72 www 378: $r->print(&mt(' a certain'));
1.55 albertel 379: }
1.72 www 380: $r->print(&mt(' course.').'</body></html>');
1.55 albertel 381: return OK;
1.6 www 382: }
383: } else {
384: if ($advanced) {
1.72 www 385: $r->print(&mt("Your home server is ").
1.55 albertel 386: $Apache::lonnet::hostname{&Apache::lonnet::homeserver
1.118 albertel 387: ($env{'user.name'},$env{'user.domain'})}.
1.55 albertel 388: "<br />\n");
1.72 www 389: $r->print(&mt(
390: "Author and Co-Author roles may not be available on servers other than your home server."));
1.17 www 391: }
1.18 www 392: if (($ENV{'REDIRECT_QUERY_STRING'}) && ($fn)) {
393: $fn.='?'.$ENV{'REDIRECT_QUERY_STRING'};
1.6 www 394: }
1.84 www 395: $r->print('<form method="post" name="rolechoice" action="'.(($fn)?$fn:$r->uri).'">');
1.116 albertel 396: $r->print('<input type="hidden" name="orgurl" value="'.$fn.'" />');
397: $r->print('<input type="hidden" name="selectrole" value="1" />');
1.6 www 398: }
1.118 albertel 399: if ($env{'user.adv'}) {
1.63 www 400: $r->print(
1.116 albertel 401: '<br /><label>'.&mt('Show all roles').': <input type="checkbox" name="showall"');
1.118 albertel 402: if ($env{'form.showall'}) { $r->print(' checked="checked" '); }
1.116 albertel 403: $r->print(' /></label><input type="submit" value="'.&mt('Display').'" />');
1.63 www 404: }
1.4 www 405:
1.75 albertel 406: my (%roletext,%sortrole,%roleclass);
1.84 www 407: my $countactive=0;
408: my $inrole=0;
409: my $possiblerole='';
1.118 albertel 410: foreach $envkey (sort keys %env) {
1.35 matthew 411: my $button = 1;
1.49 www 412: my $switchserver='';
1.75 albertel 413: my $roletext;
414: my $sortkey;
1.2 www 415: if ($envkey=~/^user\.role\./) {
1.102 raeburn 416: my ($role,$where,$trolecode,$tstart,$tend,$tremark,$tstatus,$tpstart,$tpend,$tfont);
417: &role_status($envkey,$then,$now,\$role,\$where,\$trolecode,\$tstatus,\$tstart,\$tend);
1.46 matthew 418: next if (!defined($role) || $role eq '');
1.102 raeburn 419: $tremark='';
420: $tpstart=' ';
421: $tpend=' ';
422: $tfont='#000000';
1.4 www 423: if ($tstart) {
1.74 www 424: $tpstart=&Apache::lonlocal::locallocaltime($tstart);
1.4 www 425: }
426: if ($tend) {
1.74 www 427: $tpend=&Apache::lonlocal::locallocaltime($tend);
1.4 www 428: }
1.118 albertel 429: if ($env{'request.role'} eq $trolecode) {
1.6 www 430: $tstatus='selected';
431: }
1.4 www 432: my $tbg;
1.35 matthew 433: if (($tstatus eq 'is') || ($tstatus eq 'selected') ||
1.118 albertel 434: ($env{'form.showall'})) {
1.35 matthew 435: if ($tstatus eq 'is') {
436: $tbg='#77FF77';
1.47 www 437: $tfont='#003300';
1.84 www 438: $possiblerole=$trolecode;
439: $countactive++;
1.35 matthew 440: } elsif ($tstatus eq 'future') {
441: $tbg='#FFFF77';
1.49 www 442: $button=0;
1.35 matthew 443: } elsif ($tstatus eq 'will') {
444: $tbg='#FFAA77';
1.72 www 445: $tremark.=&mt('Active at next login. ');
1.35 matthew 446: } elsif ($tstatus eq 'expired') {
447: $tbg='#FF7777';
1.47 www 448: $tfont='#330000';
1.49 www 449: $button=0;
1.35 matthew 450: } elsif ($tstatus eq 'will_not') {
451: $tbg='#AAFF77';
1.72 www 452: $tremark.=&mt('Expired after logout. ');
1.35 matthew 453: } elsif ($tstatus eq 'selected') {
454: $tbg='#11CC55';
1.47 www 455: $tfont='#002200';
1.84 www 456: $inrole=1;
1.86 albertel 457: $countactive++;
1.72 www 458: $tremark.=&mt('Currently selected. ');
1.35 matthew 459: }
460: my $trole;
461: if ($role =~ /^cr\//) {
462: my ($rdummy,$rdomain,$rauthor,$rrole)=split(/\//,$role);
1.72 www 463: $tremark.='<br>'.&mt('Defined by ').$rauthor.
464: &mt(' at ').$rdomain.'.';
1.35 matthew 465: $trole=$rrole;
1.8 www 466: } else {
1.35 matthew 467: $trole=Apache::lonnet::plaintext($role);
468: }
469: my $ttype;
470: my $twhere;
471: my ($tdom,$trest,$tsection)=
472: split(/\//,Apache::lonnet::declutter($where));
473: # First, Co-Authorship roles
474: if ($role eq 'ca') {
1.39 stredwic 475: my $home = &Apache::lonnet::homeserver($trest,$tdom);
1.83 albertel 476: my $allowed=0;
477: my @ids=&Apache::lonnet::current_machine_ids();
478: foreach my $id (@ids) { if ($id eq $home) { $allowed=1; } }
479: if (!$allowed) {
1.49 www 480: $button=0;
1.51 www 481: $switchserver=&Apache::lonnet::escape('http://'.
482: $Apache::lonnet::hostname{$home}.
1.118 albertel 483: '/adm/login?domain='.$env{'user.domain'}.
484: '&username='.$env{'user.name'}.
1.97 albertel 485: '&firsturl=/priv/'.$trest.'/');
1.49 www 486: }
1.35 matthew 487: #next if ($home eq 'no_host');
488: $home = $Apache::lonnet::hostname{$home};
1.78 sakharuk 489: $ttype='Construction Space';
1.72 www 490: $twhere=&mt('User').': '.$trest.'<br />'.&mt('Domain').
491: ': '.$tdom.'<br />'.
492: ' '.&mt('Server').': '.$home;
1.118 albertel 493: $env{'course.'.$tdom.'_'.$trest.'.description'}='ca';
1.82 www 494: $tremark.=&Apache::lonhtmlcommon::authorbombs('/res/'.$tdom.'/'.$trest.'/');
1.75 albertel 495: $sortkey=$role."$trest:$tdom";
1.35 matthew 496: } elsif ($role eq 'au') {
497: # Authors
498: my $home = &Apache::lonnet::homeserver
1.118 albertel 499: ($env{'user.name'},$env{'user.domain'});
1.83 albertel 500: my $allowed=0;
501: my @ids=&Apache::lonnet::current_machine_ids();
502: foreach my $id (@ids) { if ($id eq $home) { $allowed=1; } }
503: if (!$allowed) {
1.49 www 504: $button=0;
1.51 www 505: $switchserver=&Apache::lonnet::escape('http://'.
506: $Apache::lonnet::hostname{$home}.
1.118 albertel 507: '/adm/login?domain='.$env{'user.domain'}.
508: '&username='.$env{'user.name'}.
509: '&firsturl=/priv/'.$env{'user.name'}.'/');
1.49 www 510: }
1.35 matthew 511: #next if ($home eq 'no_host');
512: $home = $Apache::lonnet::hostname{$home};
1.78 sakharuk 513: $ttype='Construction Space';
1.72 www 514: $twhere=&mt('Domain').': '.$tdom.'<br />'.&mt('Server').
515: ': '.$home;
1.118 albertel 516: $env{'course.'.$tdom.'_'.$trest.'.description'}='ca';
517: $tremark.=&Apache::lonhtmlcommon::authorbombs('/res/'.$tdom.'/'.$env{'user.name'}.'/');
1.75 albertel 518: $sortkey=$role;
1.35 matthew 519: } elsif ($trest) {
1.78 sakharuk 520: $ttype='Course';
1.35 matthew 521: my $tcourseid=$tdom.'_'.$trest;
1.118 albertel 522: if ($env{'course.'.$tcourseid.'.description'}) {
523: $twhere=$env{'course.'.$tcourseid.'.description'};
1.80 albertel 524: $sortkey=$role."\0".$tdom."\0".$twhere."\0".$envkey;
1.72 www 525: unless ($twhere eq &mt('Currently not available')) {
1.55 albertel 526: $twhere.=' <font size="-2">'.
1.72 www 527: &Apache::loncommon::syllabuswrapper(&mt('Syllabus'),$trest,$tdom,$tfont).
1.49 www 528: '</font>';
1.55 albertel 529: }
1.8 www 530: } else {
1.105 raeburn 531: my %newhash=&Apache::lonnet::coursedescription($tcourseid);
1.35 matthew 532: if (%newhash) {
1.80 albertel 533: $sortkey=$role."\0".$tdom."\0".$newhash{'description'}.
1.77 albertel 534: "\0".$envkey;
1.49 www 535: $twhere=$newhash{'description'}.
536: ' <font size="-2">'.
1.72 www 537: &Apache::loncommon::syllabuswrapper(&mt('Syllabus'),$trest,$tdom,$tfont).
1.49 www 538: '</font>';
1.35 matthew 539: } else {
1.72 www 540: $twhere=&mt('Currently not available');
1.118 albertel 541: $env{'course.'.$tcourseid.'.description'}=$twhere;
1.80 albertel 542: $sortkey=$role."\0".$tdom."\0".$twhere."\0".$envkey;
1.35 matthew 543: }
1.8 www 544: }
1.121 albertel 545: if ($tsection) {
546: $twhere.='<br />'.&mt('Section/Group').': '.$tsection;
547: }
548:
1.72 www 549: if ($role ne 'st') { $twhere.="<br />".&mt('Domain').":".$tdom; }
1.35 matthew 550: } elsif ($tdom) {
1.78 sakharuk 551: $ttype='Domain';
1.35 matthew 552: $twhere=$tdom;
1.75 albertel 553: $sortkey=$role.$twhere;
1.35 matthew 554: } else {
1.78 sakharuk 555: $ttype='System';
1.72 www 556: $twhere=&mt('system wide');
1.75 albertel 557: $sortkey=$role.$twhere;
1.13 www 558: }
1.35 matthew 559:
1.110 raeburn 560: $roletext.=&build_roletext($trolecode,$tdom,$trest,$tstatus,$tryagain,$advanced,$tremark,$tbg,$tfont,$trole,$ttype,$twhere,$tpstart,$tpend,$nochoose,$button,$switchserver);
1.75 albertel 561: $roletext{$envkey}=$roletext;
562: if (!$sortkey) {$sortkey=$twhere."\0".$envkey;}
563: $sortrole{$sortkey}=$envkey;
564: $roleclass{$envkey}=$ttype;
1.55 albertel 565: }
1.4 www 566: }
1.75 albertel 567: }
1.84 www 568: # No active roles
569: if ($countactive==0) {
570: if ($inrole) {
571: $r->print('<h2>'.&mt('Currently no additional roles or courses').'</h2>');
572: } else {
573: $r->print('<h2>'.&mt('Currently no active roles or courses').'</h2>');
574: }
575: $r->print('</form></body></html>');
576: return OK;
577: # Is there only one choice?
1.118 albertel 578: } elsif (($countactive==1) && ($env{'request.role'} eq 'cm')) {
1.84 www 579: $r->print('<h3>'.&mt('Please stand by.').'</h3>'.
580: '<input type="hidden" name="'.$possiblerole.'" value="1" />');
581: $r->print("</form>\n");
582: $r->rflush();
583: $r->print('<script>document.forms.rolechoice.submit();</script>');
584: $r->print('</body></html>');
585: return OK;
586: }
587: # More than one possible role
588: # ----------------------------------------------------------------------- Table
589: unless (($advanced) || ($nochoose)) {
590: $r->print("<h2>".&mt('Select a Course to Enter')."</h2>\n");
591: }
592: $r->print('<br /><table><tr>');
593: unless ($nochoose) { $r->print('<th> </th>'); }
1.121 albertel 594: $r->print('<th>'.&mt('User Role').'</th><th>'.&mt('Extent').
1.84 www 595: '</th><th>'.&mt('Start').'</th><th>'.&mt('End').'</th><th>'.
1.99 www 596: &mt('Remarks and Calendar Announcements').'</th></tr>'."\n");
1.76 albertel 597: my $doheaders=-1;
1.78 sakharuk 598: foreach my $type ('Construction Space','Course','Domain','System') {
1.76 albertel 599: my $haverole=0;
1.75 albertel 600: foreach my $which (sort {uc($a) cmp uc($b)} (keys(%sortrole))) {
601: if ($roleclass{$sortrole{$which}} =~ /^\Q$type\E/) {
1.76 albertel 602: $haverole=1;
1.75 albertel 603: }
1.76 albertel 604: }
605: if ($haverole) { $doheaders++; }
606: }
1.111 albertel 607:
1.118 albertel 608: if ($env{'environment.recentroles'}) {
1.111 albertel 609: my %recent_roles =
1.118 albertel 610: &Apache::lonhtmlcommon::get_recent('roles',$env{'environment.recentrolesn'});
1.111 albertel 611: my $output='';
612: foreach (sort(keys(%recent_roles))) {
613: if (defined($roletext{'user.role.'.$_})) {
614: $output.=$roletext{'user.role.'.$_};
1.113 raeburn 615: } elsif ($numdc > 0) {
616: unless ($_ =~/^error\:/) {
617: $output.=&display_cc_role('user.role.'.$_);
618: }
619: }
1.111 albertel 620: }
621: if ($output) {
1.121 albertel 622: $r->print("<tr bgcolor='#BBffBB'><td align='center' colspan='6'>".
1.111 albertel 623: &mt('Recent Roles')."</td>");
624: $r->print($output);
625: $r->print("</tr>");
1.114 raeburn 626: $doheaders ++;
1.111 albertel 627: }
628: }
629:
1.104 raeburn 630: if ($numdc > 0) {
1.112 raeburn 631: $r->print(&coursepick_jscript());
632: $r->print(&Apache::loncommon::coursebrowser_javascript());
1.108 raeburn 633: }
634: foreach my $type ('Construction Space','Course','Domain','System') {
635: my $output;
636: foreach my $which (sort {uc($a) cmp uc($b)} (keys(%sortrole))) {
637: if ($roleclass{$sortrole{$which}} =~ /^\Q$type\E/) {
638: $output.=$roletext{$sortrole{$which}};
639: if ($sortrole{$which} =~ m-dc\./(\w+)/-) {
640: if ($dcroles{$1}) {
641: $output .= &allcourses_row($1);
1.104 raeburn 642: }
643: }
1.76 albertel 644: }
1.108 raeburn 645: }
646: if ($output) {
647: if ($doheaders > 0) {
648: $r->print("<tr bgcolor='#BBffBB'>".
1.121 albertel 649: "<td align='center' colspan='6'>".&mt($type)."</td></tr>");
1.76 albertel 650: }
1.108 raeburn 651: $r->print($output);
652: }
1.4 www 653: }
1.14 www 654: my $tremark='';
1.47 www 655: my $tfont='#003300';
1.118 albertel 656: if ($env{'request.role'} eq 'cm') {
1.19 www 657: $r->print('<tr bgcolor="#11CC55">');
1.72 www 658: $tremark=&mt('Currently selected. ');
1.47 www 659: $tfont='#002200';
1.14 www 660: } else {
661: $r->print('<tr bgcolor="#77FF77">');
662: }
663: unless ($nochoose) {
1.118 albertel 664: if ($env{'request.role'} ne 'cm') {
1.72 www 665: $r->print('<td><input type=submit value="'.
666: &mt('Select').'" name="cm"></td>');
1.55 albertel 667: } else {
668: $r->print('<td> </td>');
669: }
1.14 www 670: }
1.121 albertel 671: $r->print('<td colspan="4"><font color="'.$tfont.'">'.&mt('No role specified').
1.47 www 672: '</font></td><td><font color="'.$tfont.'">'.$tremark.
673: ' </font></td></tr>'."\n");
1.4 www 674:
675: $r->print('</table>');
676: unless ($nochoose) {
677: $r->print("</form>\n");
678: }
1.22 harris41 679: # ------------------------------------------------------------ Privileges Info
1.118 albertel 680: if (($advanced) && (($env{'user.error.msg'}) || ($error))) {
1.55 albertel 681: $r->print('<hr><h2>Current Privileges</h2>');
1.4 www 682:
1.118 albertel 683: foreach $envkey (sort keys %env) {
684: if ($envkey=~/^user\.priv\.$env{'request.role'}\./) {
1.55 albertel 685: my $where=$envkey;
1.118 albertel 686: $where=~s/^user\.priv\.$env{'request.role'}\.//;
1.55 albertel 687: my $ttype;
688: my $twhere;
689: my ($tdom,$trest,$tsec)=
690: split(/\//,Apache::lonnet::declutter($where));
691: if ($trest) {
1.118 albertel 692: if ($env{'course.'.$tdom.'_'.$trest.'.description'} eq 'ca') {
1.55 albertel 693: $ttype='Construction Space';
694: $twhere='User: '.$trest.', Domain: '.$tdom;
695: } else {
696: $ttype='Course';
1.118 albertel 697: $twhere=$env{'course.'.$tdom.'_'.$trest.'.description'};
1.55 albertel 698: if ($tsec) {
699: $twhere.=' (Section/Group: '.$tsec.')';
700: }
701: }
702: } elsif ($tdom) {
703: $ttype='Domain';
704: $twhere=$tdom;
705: } else {
706: $ttype='System';
707: $twhere='/';
708: }
709: $r->print("\n<h3>".$ttype.': '.$twhere.'</h3><ul>');
1.118 albertel 710: foreach (sort split(/:/,$env{$envkey})) {
1.55 albertel 711: if ($_) {
712: my ($prv,$restr)=split(/\&/,$_);
713: my $trestr='';
714: if ($restr ne 'F') {
715: my $i;
716: $trestr.=' (';
717: for ($i=0;$i<length($restr);$i++) {
718: $trestr.=
719: Apache::lonnet::plaintext(substr($restr,$i,1));
720: if ($i<length($restr)-1) { $trestr.=', '; }
721: }
722: $trestr.=')';
723: }
724: $r->print('<li>'.
725: Apache::lonnet::plaintext($prv).$trestr.
726: '</li>');
727: }
728: }
729: $r->print('</ul>');
730: }
731: }
1.4 www 732: }
1.66 www 733: $r->print(&Apache::lonnet::getannounce());
1.65 www 734: if ($advanced) {
735: $r->print('<p><small><i>This is LON-CAPA '.
1.85 www 736: $r->dir_config('lonVersion').'</i><br />'.
737: '<a href="/adm/logout">'.&mt('Logout').'</a></small></p>');
1.65 www 738: }
1.1 harris41 739: $r->print("</body></html>\n");
740: return OK;
1.102 raeburn 741: }
742:
743: sub role_status {
744: my ($rolekey,$then,$now,$role,$where,$trolecode,$tstatus,$tstart,$tend) = @_;
745: my @pwhere = ();
1.118 albertel 746: if (exists($env{$rolekey}) && $env{$rolekey} ne '') {
1.102 raeburn 747: (undef,undef,$$role,@pwhere)=split(/\./,$rolekey);
748: unless (!defined($$role) || $$role eq '') {
749: $$where=join('.',@pwhere);
750: $$trolecode=$$role.'.'.$$where;
1.118 albertel 751: ($$tstart,$$tend)=split(/\./,$env{$rolekey});
1.102 raeburn 752: $$tstatus='is';
1.105 raeburn 753: if ($$tstart && $$tstart>$then) {
754: $$tstatus='future';
755: if ($$tstart<$now) { $$tstatus='will'; }
1.102 raeburn 756: }
757: if ($$tend) {
758: if ($$tend<$then) {
759: $$tstatus='expired';
1.103 raeburn 760: } elsif ($$tend<$now) {
1.104 raeburn 761: $$tstatus='will_not';
1.102 raeburn 762: }
763: }
764: }
765: }
766: }
1.1 harris41 767:
1.110 raeburn 768: sub build_roletext {
769: my ($trolecode,$tdom,$trest,$tstatus,$tryagain,$advanced,$tremark,$tbg,$tfont,$trole,$ttype,$twhere,$tpstart,$tpend,$nochoose,$button,$switchserver) = @_;
1.112 raeburn 770: my $roletext='<tr bgcolor="'.$tbg.'">';
1.110 raeburn 771: unless ($nochoose) {
772: if (!$button) {
773: if ($switchserver) {
774: $roletext.='<td><a href="/adm/logout?handover='.
775: $switchserver.'">'.&mt('Switch Server').'</a></td>';
776: } else {
777: $roletext.=('<td> </td>');
778: }
779: } elsif ($tstatus eq 'is') {
780: $roletext.=('<td><input type=submit value="'.
781: &mt('Select').'" name="'.
782: $trolecode.'"></td>');
783: } elsif ($tryagain) {
784: $roletext.=
785: '<td><input type=submit value="'.
786: &mt('Try Selecting Again').'" name="'.$trolecode.'"></td>';
787: } elsif ($advanced) {
788: $roletext.=
789: '<td><input type=submit value="'.
790: &mt('Re-Initialize').'" name="'.$trolecode.'"></td>';
791: } else {
792: $roletext.='<td> </td>';
793: }
794: }
795: $tremark.=&Apache::lonannounce::showday(time,1,
796: &Apache::lonannounce::readcalendar($tdom.'_'.$trest));
797:
798:
799: $roletext.='<td><font color="'.$tfont.'">'.$trole.
1.121 albertel 800: '</font></td><td><font color="'.$tfont.'">'.$twhere.
1.110 raeburn 801: '</font></td><td><font color="'.$tfont.'">'.$tpstart.
802: '</font></td><td><font color="'.$tfont.'">'.$tpend.
803: '</font></td><td><font color="'.$tfont.'">'.$tremark.
804: ' </font></td></tr>'."\n";
805: return $roletext;
806: }
807:
808: sub check_privs {
809: my ($cckey,$then,$now) = @_;
1.118 albertel 810: if ($env{$cckey}) {
1.110 raeburn 811: my ($role,$where,$trolecode,$tstart,$tend,$tremark,$tstatus,$tpstart,$tpend,$tfont);
812: &role_status($cckey,$then,$now,\$role,\$where,\$trolecode,\$tstatus,\$tstart,\$tend);
813: unless (($tstatus eq 'is') || ($tstatus eq 'will_not')) {
814: &set_privileges($1,$2);
815: }
816: } else {
817: &set_privileges($1,$2);
818: }
819: }
820:
1.104 raeburn 821: sub check_fordc {
822: my ($dcroles,$then) = @_;
823: my $numdc = 0;
1.118 albertel 824: if ($env{'user.adv'}) {
825: foreach my $envkey (sort keys %env) {
1.104 raeburn 826: if ($envkey=~/^user\.role\.dc\.\/(\w+)\/$/) {
827: my $dcdom = $1;
828: my $livedc = 1;
1.118 albertel 829: my ($tstart,$tend)=split(/\./,$env{$envkey});
1.105 raeburn 830: if ($tstart && $tstart>$then) { $livedc = 0; }
831: if ($tend && $tend <$then) { $livedc = 0; }
1.104 raeburn 832: if ($livedc) {
833: $$dcroles{$dcdom} = $envkey;
1.105 raeburn 834: $numdc++;
1.104 raeburn 835: }
836: }
837: }
838: }
839: return $numdc;
840: }
841:
1.108 raeburn 842: sub courselink {
843: my ($dcdom) = @_;
1.109 raeburn 844: my $courseform=&Apache::loncommon::selectcourse_link
1.112 raeburn 845: ('rolechoice','dccourse_'.$dcdom,'dcdomain_'.$dcdom,'coursedesc_'.$dcdom,$dcdom);
1.109 raeburn 846: my $hiddenitems = '<input type="hidden" name="dcdomain_'.$dcdom.'" value="'.$dcdom.'" />'.
847: '<input type="hidden" name="origdom_'.$dcdom.'" value="'.$dcdom.'" />'.
848: '<input type="hidden" name="dccourse_'.$dcdom.'" value="" />'.
849: '<input type="hidden" name="coursedesc_'.$dcdom.'" value="" />';
1.112 raeburn 850: return $courseform.$hiddenitems;
1.109 raeburn 851: }
852:
853: sub coursepick_jscript {
1.104 raeburn 854: my $verify_script = <<"END";
855: <script>
1.108 raeburn 856: function verifyCoursePick(caller) {
857: var numbutton = getIndex(caller)
1.112 raeburn 858: var pickedCourse = document.rolechoice.elements[numbutton+4].value
859: var pickedDomain = document.rolechoice.elements[numbutton+2].value
860: if (document.rolechoice.elements[numbutton+2].value == document.rolechoice.elements[numbutton+3].value) {
1.104 raeburn 861: if (pickedCourse != '') {
1.108 raeburn 862: if (numbutton != -1) {
863: var courseTarget = "cc./"+pickedDomain+"/"+pickedCourse
864: document.rolechoice.elements[numbutton+1].name = courseTarget
865: document.rolechoice.submit()
866: }
1.104 raeburn 867: }
868: else {
1.114 raeburn 869: 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 870: }
871: }
872: else {
873: alert("You can only use this screen to select courses in the current domain")
874: }
875: }
1.109 raeburn 876: function getIndex(caller) {
1.108 raeburn 877: for (var i=0;i<document.rolechoice.elements.length;i++) {
1.109 raeburn 878: if (document.rolechoice.elements[i] == caller) {
1.108 raeburn 879: return i;
880: }
881: }
882: return -1;
883: }
1.104 raeburn 884: </script>
885: END
1.109 raeburn 886: return $verify_script;
1.104 raeburn 887: }
888:
1.109 raeburn 889: sub processpick {
890: my $dcdom = shift;
891: my $process_pick = <<"END";
892: <script>
893: function process_pick(dom) {
894: var numbutton = getIndex(dom)
895: var pickedCourse = opener.document.rolechoice.dccourse_$dcdom.value
896: var pickedDomain = opener.document.rolechoice.dcdomain_$dcdom.value
897: if (opener.document.rolechoice.dcdomain_$dcdom.value == opener.document.rolechoice.origdom_$dcdom.value) {
898: if (pickedCourse != '') {
899: if (numbutton != -1) {
900: var courseTarget = "cc./"+pickedDomain+"/"+pickedCourse
901: opener.document.rolechoice.elements[numbutton+1].name = courseTarget
902: opener.document.rolechoice.submit()
903: }
904: }
905: }
906: }
907:
908: function getIndex(dom) {
909: var callername = 'ccpick_'+dom
910: for (var i=0;i<opener.document.rolechoice.elements.length;i++) {
911: var elemname = opener.document.rolechoice.elements[i].name
912: if (elemname == callername) {
913: return i;
914: }
915: }
916: return -1;
917: }
918: </script>
919: END
920: return $process_pick;
921: }
1.108 raeburn 922:
1.113 raeburn 923: sub display_cc_role {
924: my $rolekey = shift;
925: my $roletext;
1.118 albertel 926: my $advanced = $env{'user.adv'};
927: my $tryagain = $env{'form.tryagain'};
1.113 raeburn 928: unless ($rolekey =~/^error\:/) {
929: if ($rolekey =~ m-^user\.role.cc\./(\w+)/(\w+)$-) {
930: my $tcourseid = $1.'_'.$2;
931: my $trolecode = 'cc./'.$1.'/'.$2;
932: my $trole = Apache::lonnet::plaintext('cc');
933: my $twhere;
934: my $tbg='#77FF77';
935: my $tfont='#003300';
936: my %newhash=&Apache::lonnet::coursedescription($tcourseid);
937: if (%newhash) {
938: $twhere=$newhash{'description'}.
939: ' <font size="-2">'.
940: &Apache::loncommon::syllabuswrapper(&mt('Syllabus'),$2,$1,$tfont).
941: '</font>';
942: } else {
943: $twhere=&mt('Currently not available');
1.118 albertel 944: $env{'course.'.$tcourseid.'.description'}=$twhere;
1.110 raeburn 945: }
1.113 raeburn 946: $twhere.="<br />".&mt('Domain').":".$1;
947: $roletext = &build_roletext($trolecode,$1,$2,'is',$tryagain,$advanced,'',$tbg,$tfont,$trole,&mt('Course'),$twhere,'','','',1,'');
1.104 raeburn 948: }
949: }
1.113 raeburn 950: return $roletext;
1.104 raeburn 951: }
952:
1.108 raeburn 953: sub allcourses_row {
1.109 raeburn 954: my $dcdom = shift;
1.108 raeburn 955: my $ccrole = Apache::lonnet::plaintext('cc');
956: my $selectlink = &courselink($dcdom);
957: my $output = '<tr bgcolor="#77FF77">'.
958: '<td><input type="button" value="'.
1.109 raeburn 959: &mt('Select').'" name="ccpick_'.$dcdom.'"'.
1.108 raeburn 960: 'onClick="verifyCoursePick(this)">'.
961: '<input type="hidden" name="pick_'.$dcdom.'" value="1"></td>'.
962: '<td><font color="#002200">'.
1.121 albertel 963: $ccrole.'</font></td>'.
1.108 raeburn 964: '<td><font color="#002200">'.&mt('All courses').':<b> '.
965: $selectlink.'</b>'.
966: '<br />'.&mt('Domain').':'.$dcdom.'</font>'.
1.121 albertel 967: '<td colspan="3"><font color="#002200">'.
1.108 raeburn 968: &mt('Course Coordinator access to all courses in domain').
969: ': <b>'.$dcdom.'</b></font></td></tr>'."\n";
970: return $output;
971: }
972:
1.104 raeburn 973: sub recent_filename {
974: my $area=shift;
975: return 'nohist_recent_'.&Apache::lonnet::escape($area);
976: }
977:
1.106 raeburn 978: sub set_privileges {
979: my ($dcdom,$pickedcourse) = @_;
980: my $area = '/'.$dcdom.'/'.$pickedcourse;
981: my $role = 'cc';
982: my $spec = $role.'.'.$area;
1.118 albertel 983: my $userroles = &Apache::lonnet::set_arearole($role,$area,'','',$dcdom,$env{'user.name'});
1.106 raeburn 984: my %ccrole = ();
985: &Apache::lonnet::standard_roleprivs(\%ccrole,$role,$dcdom,$spec,$pickedcourse,$area);
1.107 raeburn 986: my ($author,$adv)= &Apache::lonnet::set_userprivs(\$userroles,\%ccrole);
987: my @newprivs = split/\n/,$userroles;
1.106 raeburn 988: my %newccroles = ();
989: foreach (@newprivs) {
990: my ($key,$val) = split/=/,$_;
991: $newccroles{$key} = $val;
992: }
993: &Apache::lonnet::appenv(%newccroles);
1.118 albertel 994: &Apache::lonnet::log($env{'user.domain'},
995: $env{'user.name'},
996: $env{'user.home'},
1.106 raeburn 997: "Role ".$role);
998: &Apache::lonnet::appenv(
999: 'request.role' => $role,
1000: 'request.role.domain' => $dcdom,
1001: 'request.course.sec' => '');
1002: my $tadv=0;
1003: if (&Apache::lonnet::allowed('adv') eq 'F') { $tadv=1; }
1004: &Apache::lonnet::appenv('request.role.adv' => $tadv);
1005: }
1006:
1.1 harris41 1007: 1;
1008: __END__
1.32 harris41 1009:
1010: =head1 NAME
1011:
1012: Apache::lonroles - User Roles Screen
1013:
1014: =head1 SYNOPSIS
1015:
1016: Invoked by /etc/httpd/conf/srm.conf:
1017:
1018: <Location /adm/roles>
1019: PerlAccessHandler Apache::lonacc
1020: SetHandler perl-script
1021: PerlHandler Apache::lonroles
1022: ErrorDocument 403 /adm/login
1023: ErrorDocument 500 /adm/errorhandler
1024: </Location>
1.64 bowersj2 1025:
1026: =head1 OVERVIEW
1027:
1028: =head2 Choosing Roles
1029:
1030: C<lonroles> is a handler that allows a user to switch roles in
1031: mid-session. LON-CAPA attempts to work with "No Role Specified", the
1032: default role that a user has before selecting a role, as widely as
1033: possible, but certain handlers for example need specification which
1034: course they should act on, etc. Both in this scenario, and when the
1035: handler determines via C<lonnet>'s C<&allowed> function that a certain
1036: action is not allowed, C<lonroles> is used as error handler. This
1037: allows the user to select another role which may have permission to do
1038: what they were trying to do. C<lonroles> can also be accessed via the
1039: B<CRS> button in the Remote Control.
1040:
1041: =begin latex
1042:
1043: \begin{figure}
1044: \begin{center}
1045: \includegraphics[width=0.45\paperwidth,keepaspectratio]{Sample_Roles_Screen}
1046: \caption{\label{Sample_Roles_Screen}Sample Roles Screen}
1047: \end{center}
1048: \end{figure}
1049:
1050: =end latex
1051:
1052: =head2 Role Initialization
1053:
1054: 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 1055:
1056: =head1 INTRODUCTION
1057:
1058: This module enables a user to select what role he wishes to
1059: operate under (instructor, student, teaching assistant, course
1060: coordinator, etc). These roles are pre-established by the actions
1061: of upper-level users.
1062:
1063: This is part of the LearningOnline Network with CAPA project
1064: described at http://www.lon-capa.org.
1065:
1066: =head1 HANDLER SUBROUTINE
1067:
1068: This routine is called by Apache and mod_perl.
1069:
1070: =over 4
1071:
1072: =item *
1073:
1074: Roles Initialization (yes/no)
1075:
1076: =item *
1077:
1078: Get Error Message from Environment
1079:
1080: =item *
1081:
1082: Who is this?
1083:
1084: =item *
1085:
1086: Generate Page Output
1087:
1088: =item *
1089:
1090: Choice or no choice
1091:
1092: =item *
1093:
1094: Table
1095:
1096: =item *
1097:
1098: Privileges
1099:
1100: =back
1101:
1102: =cut
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