Annotation of loncom/auth/lonroles.pm, revision 1.130
1.1 harris41 1: # The LearningOnline Network with CAPA
2: # User Roles Screen
1.31 www 3: #
1.130 ! albertel 4: # $Id: lonroles.pm,v 1.129 2005/09/16 19:47:42 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') {
1.128 albertel 53: $navwindow.=&Apache::lonnavmaps::launch_win('now',undef,undef,
54: ($url eq '/adm/whatsnew'));
1.96 albertel 55: } else {
56: $navwindow.=&Apache::lonnavmaps::close();
1.95 albertel 57: }
1.62 matthew 58: my $bodytag=&Apache::loncommon::bodytag('Switching Role');
1.92 www 59: # Note to style police:
60: # This must only replace the spaces, nothing else, or it bombs elsewhere.
61: $url=~s/ /\%20/g;
1.93 albertel 62: $r->print(<<ENDREDIR);
1.62 matthew 63: <head><title>$title</title>
64: <meta HTTP-EQUIV="Refresh" CONTENT="1; url=$url">
65: </head>
66: <html>
67: $bodytag
1.96 albertel 68: <script type="text/javascript">
1.62 matthew 69: $swinfo
70: </script>
1.96 albertel 71: $navwindow
1.62 matthew 72: <h1>$msg</h1>
1.95 albertel 73: <a href="$url">Continue</a>
1.62 matthew 74: </body>
75: </html>
76: ENDREDIR
77: return;
78: }
79:
1.1 harris41 80: sub handler {
1.10 www 81:
1.1 harris41 82: my $r = shift;
83:
1.6 www 84: my $now=time;
1.118 albertel 85: my $then=$env{'user.login.time'};
1.6 www 86: my $envkey;
1.107 raeburn 87: my %dcroles = ();
88: my $numdc = &check_fordc(\%dcroles,$then);
1.10 www 89:
1.6 www 90: # ================================================================== Roles Init
1.118 albertel 91: if ($env{'form.selectrole'}) {
92: if ($env{'request.course.id'}) {
93: my %temp=('logout_'.$env{'request.course.id'} => time);
1.33 www 94: &Apache::lonnet::put('email_status',\%temp);
1.118 albertel 95: &Apache::lonnet::delenv('user.state.'.$env{'request.course.id'});
1.100 albertel 96: }
1.55 albertel 97: &Apache::lonnet::appenv("request.course.id" => '',
98: "request.course.fn" => '',
99: "request.course.uri" => '',
100: "request.course.sec" => '',
101: "request.role" => 'cm',
1.118 albertel 102: "request.role.adv" => $env{'user.adv'},
103: "request.role.domain" => $env{'user.domain'});
1.106 raeburn 104:
1.110 raeburn 105: # Check if user is a DC trying to enter a course and needs privs to be created
1.107 raeburn 106: if ($numdc > 0) {
1.118 albertel 107: foreach my $envkey (keys %env) {
1.107 raeburn 108: if ($envkey =~ m-^form\.cc\./(\w+)/(\w+)$-) {
109: if ($dcroles{$1}) {
1.109 raeburn 110: my $cckey = 'user.role.cc./'.$1.'/'.$2;
1.110 raeburn 111: &check_privs($cckey,$then,$now);
1.107 raeburn 112: }
113: last;
114: }
115: }
116: }
117:
1.118 albertel 118: foreach $envkey (keys %env) {
1.40 matthew 119: next if ($envkey!~/^user\.role\./);
1.102 raeburn 120: my ($where,$trolecode,$role,$tstatus,$tend,$tstart);
121: &role_status($envkey,$then,$now,\$role,\$where,\$trolecode,\$tstatus,\$tstart,\$tend);
1.118 albertel 122: if ($env{'form.'.$trolecode}) {
1.55 albertel 123: if ($tstatus eq 'is') {
124: $where=~s/^\///;
125: my ($cdom,$cnum,$csec)=split(/\//,$where);
1.111 albertel 126: # store role if recent_role list being kept
1.118 albertel 127: if ($env{'environment.recentroles'}) {
1.111 albertel 128: &Apache::lonhtmlcommon::store_recent('roles',
129: $trolecode,' ');
130: }
131:
132:
1.53 www 133: # check for keyed access
1.55 albertel 134: if (($role eq 'st') &&
1.118 albertel 135: ($env{'course.'.$cdom.'_'.$cnum.'.keyaccess'} eq 'yes')) {
1.89 www 136: # who is key authority?
137: my $authdom=$cdom;
138: my $authnum=$cnum;
1.118 albertel 139: if ($env{'course.'.$cdom.'_'.$cnum.'.keyauth'}) {
1.89 www 140: ($authnum,$authdom)=
1.118 albertel 141: split(/\W/,$env{'course.'.$cdom.'_'.$cnum.'.keyauth'});
1.89 www 142: }
143: # check with key authority
144: unless (&Apache::lonnet::validate_access_key(
1.118 albertel 145: $env{'environment.key.'.$cdom.'_'.$cnum},
1.89 www 146: $authdom,$authnum)) {
1.53 www 147: # there is no valid key
1.118 albertel 148: if ($env{'form.newkey'}) {
1.53 www 149: # student attempts to register a new key
1.89 www 150: &Apache::loncommon::content_type($r,'text/html');
151: &Apache::loncommon::no_cache($r);
152: $r->send_http_header;
153: my $swinfo=&Apache::lonmenu::rawconfig();
154: my $bodytag=&Apache::loncommon::bodytag
155: ('Verifying Access Key to Unlock this Course');
1.90 www 156: my $buttontext=&mt('Enter Course');
157: my $message=&mt('Successfully registered key');
158: my $assignresult=
159: &Apache::lonnet::assign_access_key(
1.118 albertel 160: $env{'form.newkey'},
1.90 www 161: $authdom,$authnum,
1.91 www 162: $cdom,$cnum,
1.118 albertel 163: $env{'user.domain'},
164: $env{'user.name'},
1.90 www 165: 'Assigned from '.$ENV{'REMOTE_ADDR'}.' at '.localtime().' for '.
166: $trolecode);
167: unless ($assignresult eq 'ok') {
168: $assignresult=~s/^error\:\s*//;
169: $message=&mt($assignresult).
170: '<br /><a href="/adm/logout">'.
1.89 www 171: &mt('Logout').'</a>';
1.90 www 172: $buttontext=&mt('Re-Enter Key');
173: }
1.89 www 174: $r->print(<<ENDENTEREDKEY);
175: <head><title>Verifying Course Access Key</title>
176: </head>
177: <html>
178: $bodytag
179: <script>
180: $swinfo
181: </script>
182: <form method="post">
183: <input type="hidden" name="selectrole" value="1" />
184: <input type="hidden" name="$trolecode" value="1" />
1.90 www 185: <font size="+2">$message</font><br />
1.89 www 186: <input type="submit" value="$buttontext" />
187: </form>
188: </body></html>
189: ENDENTEREDKEY
190: return OK;
1.55 albertel 191: } else {
1.53 www 192: # print form to enter a new key
1.73 www 193: &Apache::loncommon::content_type($r,'text/html');
1.55 albertel 194: &Apache::loncommon::no_cache($r);
195: $r->send_http_header;
196: my $swinfo=&Apache::lonmenu::rawconfig();
197: my $bodytag=&Apache::loncommon::bodytag
198: ('Enter Access Key to Unlock this Course');
199: $r->print(<<ENDENTERKEY);
1.53 www 200: <head><title>Entering Course Access Key</title>
201: </head>
202: <html>
203: $bodytag
204: <script>
205: $swinfo
206: </script>
207: <form method="post">
1.89 www 208: <input type="hidden" name="selectrole" value="1" />
209: <input type="hidden" name="$trolecode" value="1" />
1.118 albertel 210: <input type="text" size="20" name="newkey" value="$env{'form.newkey'}" />
1.53 www 211: <input type="submit" value="Enter key" />
212: </form>
213: </body></html>
214: ENDENTERKEY
1.55 albertel 215: return OK;
216: }
217: }
218: }
1.118 albertel 219: &Apache::lonnet::log($env{'user.domain'},
220: $env{'user.name'},
221: $env{'user.home'},
1.87 www 222: "Role ".$trolecode);
1.101 albertel 223:
1.56 www 224: &Apache::lonnet::appenv(
1.101 albertel 225: 'request.role' => $trolecode,
1.56 www 226: 'request.role.domain' => $cdom,
227: 'request.course.sec' => $csec);
1.101 albertel 228: my $tadv=0;
1.72 www 229: my $msg=&mt('Entering course ...');
1.62 matthew 230:
1.125 www 231: if (($cnum) && ($role ne 'ca') && ($role ne 'aa')) {
1.55 albertel 232: my ($furl,$ferr)=
233: &Apache::lonuserstate::readmap($cdom.'/'.$cnum);
1.118 albertel 234: if (($env{'form.orgurl'}) &&
235: ($env{'form.orgurl'}!~/^\/adm\/flip/)) {
236: my $dest=$env{'form.orgurl'};
1.117 albertel 237: if (&Apache::lonnet::allowed('adv') eq 'F') { $tadv=1; }
238: &Apache::lonnet::appenv('request.role.adv'=>$tadv);
1.67 albertel 239: $r->internal_redirect($dest);
1.55 albertel 240: return OK;
241: } else {
1.118 albertel 242: unless ($env{'request.course.id'}) {
1.55 albertel 243: &Apache::lonnet::appenv(
244: "request.course.id" => $cdom.'_'.$cnum);
1.61 www 245: $furl='/adm/roles?tryagain=1';
1.55 albertel 246: $msg=
1.72 www 247: '<h1><font color=red>'.
248: &mt('Could not initialize course at this time.').
249: '</font></h1><h3>'.&mt('Please try again.').'</h3>'.$ferr;
1.55 albertel 250: }
1.117 albertel 251: if (&Apache::lonnet::allowed('adv') eq 'F') { $tadv=1; }
252: &Apache::lonnet::appenv('request.role.adv'=>$tadv);
1.58 bowersj2 253:
254: # Check to see if the user is a CC entering a course
255: # for the first time
256: my (undef, undef, $role, $courseid) = split(/\./, $envkey);
257: if (substr($courseid, 0, 1) eq '/') {
258: $courseid = substr($courseid, 1);
259: }
260: $courseid =~ s/\//_/;
1.118 albertel 261: if ($role eq 'cc' && $env{'course.' . $courseid .
1.58 bowersj2 262: '.course.helper.not.run'}) {
263: $furl = "/adm/helper/course.initialization.helper";
1.124 albertel 264: # Send the user to the course they selected
265: } elsif (($env{'request.course.fn'})
266: && ($role eq 'cc' && ($env{'environment.course_init_display'} ne 'firstres'))) {
267: $msg = &mt('Entering course ....');
268: &redirect_user($r,&mt('New in course'),
269: '/adm/whatsnew',$msg,
270: $env{'environment.remotenavmap'});
271: return OK;
1.58 bowersj2 272: }
1.124 albertel 273: &redirect_user($r,&mt('Entering Course'),
1.95 albertel 274: $furl,$msg,
1.118 albertel 275: $env{'environment.remotenavmap'});
1.124 albertel 276: return OK;
1.55 albertel 277: }
278: }
1.62 matthew 279: #
280: # Send the user to the construction space they selected
1.125 www 281: if ($role =~ /^(au|ca|aa)$/) {
1.62 matthew 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>");
1.126 www 347: $r->print("<!-- LONCAPAACCESSCONTROLERRORSCREEN --><hr /><pre>Access : ".
1.4 www 348: Apache::lonnet::plaintext($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: $r->print(&mt(
1.126 www 391: "Author and Co-Author roles are not available on servers other than their respective home servers."));
1.17 www 392: }
1.18 www 393: if (($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);
1.126 www 464: $tremark.='<br />'.&mt('Defined by ').$rauthor.
1.72 www 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($where));
474: # First, Co-Authorship roles
1.125 www 475: if (($role eq 'ca') || ($role eq 'aa')) {
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;
1.130 ! albertel 482: $switchserver='otherserver='.$home.'&role='.$trolecode;
1.49 www 483: }
1.35 matthew 484: #next if ($home eq 'no_host');
485: $home = $Apache::lonnet::hostname{$home};
1.78 sakharuk 486: $ttype='Construction Space';
1.72 www 487: $twhere=&mt('User').': '.$trest.'<br />'.&mt('Domain').
488: ': '.$tdom.'<br />'.
489: ' '.&mt('Server').': '.$home;
1.118 albertel 490: $env{'course.'.$tdom.'_'.$trest.'.description'}='ca';
1.82 www 491: $tremark.=&Apache::lonhtmlcommon::authorbombs('/res/'.$tdom.'/'.$trest.'/');
1.75 albertel 492: $sortkey=$role."$trest:$tdom";
1.35 matthew 493: } elsif ($role eq 'au') {
494: # Authors
495: my $home = &Apache::lonnet::homeserver
1.118 albertel 496: ($env{'user.name'},$env{'user.domain'});
1.83 albertel 497: my $allowed=0;
498: my @ids=&Apache::lonnet::current_machine_ids();
499: foreach my $id (@ids) { if ($id eq $home) { $allowed=1; } }
500: if (!$allowed) {
1.49 www 501: $button=0;
1.51 www 502: $switchserver=&Apache::lonnet::escape('http://'.
503: $Apache::lonnet::hostname{$home}.
1.118 albertel 504: '/adm/login?domain='.$env{'user.domain'}.
505: '&username='.$env{'user.name'}.
506: '&firsturl=/priv/'.$env{'user.name'}.'/');
1.49 www 507: }
1.35 matthew 508: #next if ($home eq 'no_host');
509: $home = $Apache::lonnet::hostname{$home};
1.78 sakharuk 510: $ttype='Construction Space';
1.72 www 511: $twhere=&mt('Domain').': '.$tdom.'<br />'.&mt('Server').
512: ': '.$home;
1.118 albertel 513: $env{'course.'.$tdom.'_'.$trest.'.description'}='ca';
514: $tremark.=&Apache::lonhtmlcommon::authorbombs('/res/'.$tdom.'/'.$env{'user.name'}.'/');
1.75 albertel 515: $sortkey=$role;
1.35 matthew 516: } elsif ($trest) {
1.78 sakharuk 517: $ttype='Course';
1.35 matthew 518: my $tcourseid=$tdom.'_'.$trest;
1.118 albertel 519: if ($env{'course.'.$tcourseid.'.description'}) {
520: $twhere=$env{'course.'.$tcourseid.'.description'};
1.80 albertel 521: $sortkey=$role."\0".$tdom."\0".$twhere."\0".$envkey;
1.72 www 522: unless ($twhere eq &mt('Currently not available')) {
1.55 albertel 523: $twhere.=' <font size="-2">'.
1.72 www 524: &Apache::loncommon::syllabuswrapper(&mt('Syllabus'),$trest,$tdom,$tfont).
1.49 www 525: '</font>';
1.55 albertel 526: }
1.8 www 527: } else {
1.105 raeburn 528: my %newhash=&Apache::lonnet::coursedescription($tcourseid);
1.35 matthew 529: if (%newhash) {
1.80 albertel 530: $sortkey=$role."\0".$tdom."\0".$newhash{'description'}.
1.77 albertel 531: "\0".$envkey;
1.49 www 532: $twhere=$newhash{'description'}.
533: ' <font size="-2">'.
1.72 www 534: &Apache::loncommon::syllabuswrapper(&mt('Syllabus'),$trest,$tdom,$tfont).
1.49 www 535: '</font>';
1.35 matthew 536: } else {
1.72 www 537: $twhere=&mt('Currently not available');
1.118 albertel 538: $env{'course.'.$tcourseid.'.description'}=$twhere;
1.80 albertel 539: $sortkey=$role."\0".$tdom."\0".$twhere."\0".$envkey;
1.35 matthew 540: }
1.8 www 541: }
1.121 albertel 542: if ($tsection) {
543: $twhere.='<br />'.&mt('Section/Group').': '.$tsection;
544: }
545:
1.72 www 546: if ($role ne 'st') { $twhere.="<br />".&mt('Domain').":".$tdom; }
1.35 matthew 547: } elsif ($tdom) {
1.78 sakharuk 548: $ttype='Domain';
1.35 matthew 549: $twhere=$tdom;
1.75 albertel 550: $sortkey=$role.$twhere;
1.35 matthew 551: } else {
1.78 sakharuk 552: $ttype='System';
1.72 www 553: $twhere=&mt('system wide');
1.75 albertel 554: $sortkey=$role.$twhere;
1.13 www 555: }
1.35 matthew 556:
1.127 albertel 557: $roletext.=&build_roletext($trolecode,$tdom,$trest,$tstatus,$tryagain,$advanced,$tremark,$tbg,$tfont,$trole,$ttype,$twhere,$tpstart,$tpend,$nochoose,$button,$switchserver);
1.75 albertel 558: $roletext{$envkey}=$roletext;
559: if (!$sortkey) {$sortkey=$twhere."\0".$envkey;}
560: $sortrole{$sortkey}=$envkey;
561: $roleclass{$envkey}=$ttype;
1.55 albertel 562: }
1.4 www 563: }
1.75 albertel 564: }
1.84 www 565: # No active roles
566: if ($countactive==0) {
567: if ($inrole) {
568: $r->print('<h2>'.&mt('Currently no additional roles or courses').'</h2>');
569: } else {
570: $r->print('<h2>'.&mt('Currently no active roles or courses').'</h2>');
571: }
572: $r->print('</form></body></html>');
573: return OK;
574: # Is there only one choice?
1.118 albertel 575: } elsif (($countactive==1) && ($env{'request.role'} eq 'cm')) {
1.84 www 576: $r->print('<h3>'.&mt('Please stand by.').'</h3>'.
577: '<input type="hidden" name="'.$possiblerole.'" value="1" />');
578: $r->print("</form>\n");
579: $r->rflush();
580: $r->print('<script>document.forms.rolechoice.submit();</script>');
581: $r->print('</body></html>');
582: return OK;
583: }
584: # More than one possible role
585: # ----------------------------------------------------------------------- Table
586: unless (($advanced) || ($nochoose)) {
587: $r->print("<h2>".&mt('Select a Course to Enter')."</h2>\n");
588: }
589: $r->print('<br /><table><tr>');
590: unless ($nochoose) { $r->print('<th> </th>'); }
1.121 albertel 591: $r->print('<th>'.&mt('User Role').'</th><th>'.&mt('Extent').
1.84 www 592: '</th><th>'.&mt('Start').'</th><th>'.&mt('End').'</th><th>'.
1.99 www 593: &mt('Remarks and Calendar Announcements').'</th></tr>'."\n");
1.76 albertel 594: my $doheaders=-1;
1.129 albertel 595: foreach my $type ('Domain','Construction Space','Course','System') {
1.76 albertel 596: my $haverole=0;
1.75 albertel 597: foreach my $which (sort {uc($a) cmp uc($b)} (keys(%sortrole))) {
598: if ($roleclass{$sortrole{$which}} =~ /^\Q$type\E/) {
1.76 albertel 599: $haverole=1;
1.75 albertel 600: }
1.76 albertel 601: }
602: if ($haverole) { $doheaders++; }
603: }
1.111 albertel 604:
1.118 albertel 605: if ($env{'environment.recentroles'}) {
1.111 albertel 606: my %recent_roles =
1.118 albertel 607: &Apache::lonhtmlcommon::get_recent('roles',$env{'environment.recentrolesn'});
1.111 albertel 608: my $output='';
609: foreach (sort(keys(%recent_roles))) {
610: if (defined($roletext{'user.role.'.$_})) {
611: $output.=$roletext{'user.role.'.$_};
1.113 raeburn 612: } elsif ($numdc > 0) {
613: unless ($_ =~/^error\:/) {
614: $output.=&display_cc_role('user.role.'.$_);
615: }
616: }
1.111 albertel 617: }
618: if ($output) {
1.127 albertel 619: $r->print("<tr><td align='center' colspan='6'><font face='arial'>".
1.126 www 620: &mt('Recent Roles')."</font></td>");
1.111 albertel 621: $r->print($output);
622: $r->print("</tr>");
1.114 raeburn 623: $doheaders ++;
1.111 albertel 624: }
625: }
626:
1.104 raeburn 627: if ($numdc > 0) {
1.112 raeburn 628: $r->print(&coursepick_jscript());
629: $r->print(&Apache::loncommon::coursebrowser_javascript());
1.108 raeburn 630: }
631: foreach my $type ('Construction Space','Course','Domain','System') {
632: my $output;
633: foreach my $which (sort {uc($a) cmp uc($b)} (keys(%sortrole))) {
634: if ($roleclass{$sortrole{$which}} =~ /^\Q$type\E/) {
635: $output.=$roletext{$sortrole{$which}};
636: if ($sortrole{$which} =~ m-dc\./(\w+)/-) {
637: if ($dcroles{$1}) {
638: $output .= &allcourses_row($1);
1.104 raeburn 639: }
640: }
1.76 albertel 641: }
1.108 raeburn 642: }
643: if ($output) {
644: if ($doheaders > 0) {
1.126 www 645: $r->print("<tr>".
1.127 albertel 646: "<td align='center' colspan='6'><font face='arial'>".&mt($type)."</font></td></tr>");
1.76 albertel 647: }
1.108 raeburn 648: $r->print($output);
649: }
1.4 www 650: }
1.14 www 651: my $tremark='';
1.47 www 652: my $tfont='#003300';
1.118 albertel 653: if ($env{'request.role'} eq 'cm') {
1.19 www 654: $r->print('<tr bgcolor="#11CC55">');
1.72 www 655: $tremark=&mt('Currently selected. ');
1.47 www 656: $tfont='#002200';
1.14 www 657: } else {
658: $r->print('<tr bgcolor="#77FF77">');
659: }
660: unless ($nochoose) {
1.118 albertel 661: if ($env{'request.role'} ne 'cm') {
1.72 www 662: $r->print('<td><input type=submit value="'.
663: &mt('Select').'" name="cm"></td>');
1.55 albertel 664: } else {
665: $r->print('<td> </td>');
666: }
1.14 www 667: }
1.121 albertel 668: $r->print('<td colspan="4"><font color="'.$tfont.'">'.&mt('No role specified').
1.47 www 669: '</font></td><td><font color="'.$tfont.'">'.$tremark.
670: ' </font></td></tr>'."\n");
1.4 www 671:
672: $r->print('</table>');
673: unless ($nochoose) {
674: $r->print("</form>\n");
675: }
1.22 harris41 676: # ------------------------------------------------------------ Privileges Info
1.118 albertel 677: if (($advanced) && (($env{'user.error.msg'}) || ($error))) {
1.127 albertel 678: $r->print('<hr /><h2>Current Privileges</h2>');
1.4 www 679:
1.118 albertel 680: foreach $envkey (sort keys %env) {
681: if ($envkey=~/^user\.priv\.$env{'request.role'}\./) {
1.55 albertel 682: my $where=$envkey;
1.118 albertel 683: $where=~s/^user\.priv\.$env{'request.role'}\.//;
1.55 albertel 684: my $ttype;
685: my $twhere;
686: my ($tdom,$trest,$tsec)=
687: split(/\//,Apache::lonnet::declutter($where));
688: if ($trest) {
1.118 albertel 689: if ($env{'course.'.$tdom.'_'.$trest.'.description'} eq 'ca') {
1.55 albertel 690: $ttype='Construction Space';
691: $twhere='User: '.$trest.', Domain: '.$tdom;
692: } else {
693: $ttype='Course';
1.118 albertel 694: $twhere=$env{'course.'.$tdom.'_'.$trest.'.description'};
1.55 albertel 695: if ($tsec) {
696: $twhere.=' (Section/Group: '.$tsec.')';
697: }
698: }
699: } elsif ($tdom) {
700: $ttype='Domain';
701: $twhere=$tdom;
702: } else {
703: $ttype='System';
704: $twhere='/';
705: }
706: $r->print("\n<h3>".$ttype.': '.$twhere.'</h3><ul>');
1.118 albertel 707: foreach (sort split(/:/,$env{$envkey})) {
1.55 albertel 708: if ($_) {
709: my ($prv,$restr)=split(/\&/,$_);
710: my $trestr='';
711: if ($restr ne 'F') {
712: my $i;
713: $trestr.=' (';
714: for ($i=0;$i<length($restr);$i++) {
715: $trestr.=
716: Apache::lonnet::plaintext(substr($restr,$i,1));
717: if ($i<length($restr)-1) { $trestr.=', '; }
718: }
719: $trestr.=')';
720: }
721: $r->print('<li>'.
722: Apache::lonnet::plaintext($prv).$trestr.
723: '</li>');
724: }
725: }
726: $r->print('</ul>');
727: }
728: }
1.4 www 729: }
1.66 www 730: $r->print(&Apache::lonnet::getannounce());
1.65 www 731: if ($advanced) {
732: $r->print('<p><small><i>This is LON-CAPA '.
1.85 www 733: $r->dir_config('lonVersion').'</i><br />'.
734: '<a href="/adm/logout">'.&mt('Logout').'</a></small></p>');
1.65 www 735: }
1.1 harris41 736: $r->print("</body></html>\n");
737: return OK;
1.102 raeburn 738: }
739:
740: sub role_status {
741: my ($rolekey,$then,$now,$role,$where,$trolecode,$tstatus,$tstart,$tend) = @_;
742: my @pwhere = ();
1.118 albertel 743: if (exists($env{$rolekey}) && $env{$rolekey} ne '') {
1.102 raeburn 744: (undef,undef,$$role,@pwhere)=split(/\./,$rolekey);
745: unless (!defined($$role) || $$role eq '') {
746: $$where=join('.',@pwhere);
747: $$trolecode=$$role.'.'.$$where;
1.118 albertel 748: ($$tstart,$$tend)=split(/\./,$env{$rolekey});
1.102 raeburn 749: $$tstatus='is';
1.105 raeburn 750: if ($$tstart && $$tstart>$then) {
751: $$tstatus='future';
752: if ($$tstart<$now) { $$tstatus='will'; }
1.102 raeburn 753: }
754: if ($$tend) {
755: if ($$tend<$then) {
756: $$tstatus='expired';
1.103 raeburn 757: } elsif ($$tend<$now) {
1.104 raeburn 758: $$tstatus='will_not';
1.102 raeburn 759: }
760: }
761: }
762: }
763: }
1.1 harris41 764:
1.110 raeburn 765: sub build_roletext {
1.127 albertel 766: my ($trolecode,$tdom,$trest,$tstatus,$tryagain,$advanced,$tremark,$tbg,$tfont,$trole,$ttype,$twhere,$tpstart,$tpend,$nochoose,$button,$switchserver) = @_;
767: my $roletext='<tr bgcolor="'.$tbg.'">';
1.110 raeburn 768: unless ($nochoose) {
769: if (!$button) {
770: if ($switchserver) {
1.130 ! albertel 771: $roletext.='<td><a href="/adm/switchserver?'.
1.110 raeburn 772: $switchserver.'">'.&mt('Switch Server').'</a></td>';
773: } else {
774: $roletext.=('<td> </td>');
775: }
776: } elsif ($tstatus eq 'is') {
777: $roletext.=('<td><input type=submit value="'.
778: &mt('Select').'" name="'.
779: $trolecode.'"></td>');
780: } elsif ($tryagain) {
781: $roletext.=
782: '<td><input type=submit value="'.
783: &mt('Try Selecting Again').'" name="'.$trolecode.'"></td>';
784: } elsif ($advanced) {
785: $roletext.=
786: '<td><input type=submit value="'.
787: &mt('Re-Initialize').'" name="'.$trolecode.'"></td>';
788: } else {
789: $roletext.='<td> </td>';
790: }
791: }
792: $tremark.=&Apache::lonannounce::showday(time,1,
793: &Apache::lonannounce::readcalendar($tdom.'_'.$trest));
794:
795:
796: $roletext.='<td><font color="'.$tfont.'">'.$trole.
1.121 albertel 797: '</font></td><td><font color="'.$tfont.'">'.$twhere.
1.110 raeburn 798: '</font></td><td><font color="'.$tfont.'">'.$tpstart.
799: '</font></td><td><font color="'.$tfont.'">'.$tpend.
800: '</font></td><td><font color="'.$tfont.'">'.$tremark.
801: ' </font></td></tr>'."\n";
802: return $roletext;
803: }
804:
805: sub check_privs {
806: my ($cckey,$then,$now) = @_;
1.118 albertel 807: if ($env{$cckey}) {
1.110 raeburn 808: my ($role,$where,$trolecode,$tstart,$tend,$tremark,$tstatus,$tpstart,$tpend,$tfont);
809: &role_status($cckey,$then,$now,\$role,\$where,\$trolecode,\$tstatus,\$tstart,\$tend);
810: unless (($tstatus eq 'is') || ($tstatus eq 'will_not')) {
811: &set_privileges($1,$2);
812: }
813: } else {
814: &set_privileges($1,$2);
815: }
816: }
817:
1.104 raeburn 818: sub check_fordc {
819: my ($dcroles,$then) = @_;
820: my $numdc = 0;
1.118 albertel 821: if ($env{'user.adv'}) {
822: foreach my $envkey (sort keys %env) {
1.104 raeburn 823: if ($envkey=~/^user\.role\.dc\.\/(\w+)\/$/) {
824: my $dcdom = $1;
825: my $livedc = 1;
1.118 albertel 826: my ($tstart,$tend)=split(/\./,$env{$envkey});
1.105 raeburn 827: if ($tstart && $tstart>$then) { $livedc = 0; }
828: if ($tend && $tend <$then) { $livedc = 0; }
1.104 raeburn 829: if ($livedc) {
830: $$dcroles{$dcdom} = $envkey;
1.105 raeburn 831: $numdc++;
1.104 raeburn 832: }
833: }
834: }
835: }
836: return $numdc;
837: }
838:
1.108 raeburn 839: sub courselink {
840: my ($dcdom) = @_;
1.109 raeburn 841: my $courseform=&Apache::loncommon::selectcourse_link
1.112 raeburn 842: ('rolechoice','dccourse_'.$dcdom,'dcdomain_'.$dcdom,'coursedesc_'.$dcdom,$dcdom);
1.109 raeburn 843: my $hiddenitems = '<input type="hidden" name="dcdomain_'.$dcdom.'" value="'.$dcdom.'" />'.
844: '<input type="hidden" name="origdom_'.$dcdom.'" value="'.$dcdom.'" />'.
845: '<input type="hidden" name="dccourse_'.$dcdom.'" value="" />'.
846: '<input type="hidden" name="coursedesc_'.$dcdom.'" value="" />';
1.112 raeburn 847: return $courseform.$hiddenitems;
1.109 raeburn 848: }
849:
850: sub coursepick_jscript {
1.104 raeburn 851: my $verify_script = <<"END";
852: <script>
1.108 raeburn 853: function verifyCoursePick(caller) {
854: var numbutton = getIndex(caller)
1.112 raeburn 855: var pickedCourse = document.rolechoice.elements[numbutton+4].value
856: var pickedDomain = document.rolechoice.elements[numbutton+2].value
857: if (document.rolechoice.elements[numbutton+2].value == document.rolechoice.elements[numbutton+3].value) {
1.104 raeburn 858: if (pickedCourse != '') {
1.108 raeburn 859: if (numbutton != -1) {
860: var courseTarget = "cc./"+pickedDomain+"/"+pickedCourse
861: document.rolechoice.elements[numbutton+1].name = courseTarget
862: document.rolechoice.submit()
863: }
1.104 raeburn 864: }
865: else {
1.114 raeburn 866: 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 867: }
868: }
869: else {
870: alert("You can only use this screen to select courses in the current domain")
871: }
872: }
1.109 raeburn 873: function getIndex(caller) {
1.108 raeburn 874: for (var i=0;i<document.rolechoice.elements.length;i++) {
1.109 raeburn 875: if (document.rolechoice.elements[i] == caller) {
1.108 raeburn 876: return i;
877: }
878: }
879: return -1;
880: }
1.104 raeburn 881: </script>
882: END
1.109 raeburn 883: return $verify_script;
1.104 raeburn 884: }
885:
1.109 raeburn 886: sub processpick {
887: my $dcdom = shift;
888: my $process_pick = <<"END";
889: <script>
890: function process_pick(dom) {
891: var numbutton = getIndex(dom)
892: var pickedCourse = opener.document.rolechoice.dccourse_$dcdom.value
893: var pickedDomain = opener.document.rolechoice.dcdomain_$dcdom.value
894: if (opener.document.rolechoice.dcdomain_$dcdom.value == opener.document.rolechoice.origdom_$dcdom.value) {
895: if (pickedCourse != '') {
896: if (numbutton != -1) {
897: var courseTarget = "cc./"+pickedDomain+"/"+pickedCourse
898: opener.document.rolechoice.elements[numbutton+1].name = courseTarget
899: opener.document.rolechoice.submit()
900: }
901: }
902: }
903: }
904:
905: function getIndex(dom) {
906: var callername = 'ccpick_'+dom
907: for (var i=0;i<opener.document.rolechoice.elements.length;i++) {
908: var elemname = opener.document.rolechoice.elements[i].name
909: if (elemname == callername) {
910: return i;
911: }
912: }
913: return -1;
914: }
915: </script>
916: END
917: return $process_pick;
918: }
1.108 raeburn 919:
1.113 raeburn 920: sub display_cc_role {
921: my $rolekey = shift;
922: my $roletext;
1.118 albertel 923: my $advanced = $env{'user.adv'};
924: my $tryagain = $env{'form.tryagain'};
1.113 raeburn 925: unless ($rolekey =~/^error\:/) {
926: if ($rolekey =~ m-^user\.role.cc\./(\w+)/(\w+)$-) {
927: my $tcourseid = $1.'_'.$2;
928: my $trolecode = 'cc./'.$1.'/'.$2;
929: my $trole = Apache::lonnet::plaintext('cc');
930: my $twhere;
931: my $tbg='#77FF77';
932: my $tfont='#003300';
933: my %newhash=&Apache::lonnet::coursedescription($tcourseid);
934: if (%newhash) {
935: $twhere=$newhash{'description'}.
936: ' <font size="-2">'.
937: &Apache::loncommon::syllabuswrapper(&mt('Syllabus'),$2,$1,$tfont).
938: '</font>';
939: } else {
940: $twhere=&mt('Currently not available');
1.118 albertel 941: $env{'course.'.$tcourseid.'.description'}=$twhere;
1.110 raeburn 942: }
1.113 raeburn 943: $twhere.="<br />".&mt('Domain').":".$1;
1.127 albertel 944: $roletext = &build_roletext($trolecode,$1,$2,'is',$tryagain,$advanced,'',$tbg,$tfont,$trole,&mt('Course'),$twhere,'','','',1,'');
1.104 raeburn 945: }
946: }
1.113 raeburn 947: return $roletext;
1.104 raeburn 948: }
949:
1.108 raeburn 950: sub allcourses_row {
1.109 raeburn 951: my $dcdom = shift;
1.108 raeburn 952: my $ccrole = Apache::lonnet::plaintext('cc');
953: my $selectlink = &courselink($dcdom);
1.127 albertel 954: my $output = '<tr bgcolor="#99FF99">'.
1.108 raeburn 955: '<td><input type="button" value="'.
1.109 raeburn 956: &mt('Select').'" name="ccpick_'.$dcdom.'"'.
1.108 raeburn 957: 'onClick="verifyCoursePick(this)">'.
958: '<input type="hidden" name="pick_'.$dcdom.'" value="1"></td>'.
959: '<td><font color="#002200">'.
1.121 albertel 960: $ccrole.'</font></td>'.
1.108 raeburn 961: '<td><font color="#002200">'.&mt('All courses').':<b> '.
962: $selectlink.'</b>'.
963: '<br />'.&mt('Domain').':'.$dcdom.'</font>'.
1.121 albertel 964: '<td colspan="3"><font color="#002200">'.
1.108 raeburn 965: &mt('Course Coordinator access to all courses in domain').
966: ': <b>'.$dcdom.'</b></font></td></tr>'."\n";
967: return $output;
968: }
969:
1.104 raeburn 970: sub recent_filename {
971: my $area=shift;
972: return 'nohist_recent_'.&Apache::lonnet::escape($area);
973: }
974:
1.106 raeburn 975: sub set_privileges {
976: my ($dcdom,$pickedcourse) = @_;
977: my $area = '/'.$dcdom.'/'.$pickedcourse;
978: my $role = 'cc';
979: my $spec = $role.'.'.$area;
1.118 albertel 980: my $userroles = &Apache::lonnet::set_arearole($role,$area,'','',$dcdom,$env{'user.name'});
1.106 raeburn 981: my %ccrole = ();
982: &Apache::lonnet::standard_roleprivs(\%ccrole,$role,$dcdom,$spec,$pickedcourse,$area);
1.107 raeburn 983: my ($author,$adv)= &Apache::lonnet::set_userprivs(\$userroles,\%ccrole);
984: my @newprivs = split/\n/,$userroles;
1.106 raeburn 985: my %newccroles = ();
986: foreach (@newprivs) {
987: my ($key,$val) = split/=/,$_;
988: $newccroles{$key} = $val;
989: }
990: &Apache::lonnet::appenv(%newccroles);
1.118 albertel 991: &Apache::lonnet::log($env{'user.domain'},
992: $env{'user.name'},
993: $env{'user.home'},
1.106 raeburn 994: "Role ".$role);
995: &Apache::lonnet::appenv(
996: 'request.role' => $role,
997: 'request.role.domain' => $dcdom,
998: 'request.course.sec' => '');
999: my $tadv=0;
1000: if (&Apache::lonnet::allowed('adv') eq 'F') { $tadv=1; }
1001: &Apache::lonnet::appenv('request.role.adv' => $tadv);
1002: }
1003:
1.1 harris41 1004: 1;
1005: __END__
1.32 harris41 1006:
1007: =head1 NAME
1008:
1009: Apache::lonroles - User Roles Screen
1010:
1011: =head1 SYNOPSIS
1012:
1013: Invoked by /etc/httpd/conf/srm.conf:
1014:
1015: <Location /adm/roles>
1016: PerlAccessHandler Apache::lonacc
1017: SetHandler perl-script
1018: PerlHandler Apache::lonroles
1019: ErrorDocument 403 /adm/login
1020: ErrorDocument 500 /adm/errorhandler
1021: </Location>
1.64 bowersj2 1022:
1023: =head1 OVERVIEW
1024:
1025: =head2 Choosing Roles
1026:
1027: C<lonroles> is a handler that allows a user to switch roles in
1028: mid-session. LON-CAPA attempts to work with "No Role Specified", the
1029: default role that a user has before selecting a role, as widely as
1030: possible, but certain handlers for example need specification which
1031: course they should act on, etc. Both in this scenario, and when the
1032: handler determines via C<lonnet>'s C<&allowed> function that a certain
1033: action is not allowed, C<lonroles> is used as error handler. This
1034: allows the user to select another role which may have permission to do
1035: what they were trying to do. C<lonroles> can also be accessed via the
1036: B<CRS> button in the Remote Control.
1037:
1038: =begin latex
1039:
1040: \begin{figure}
1041: \begin{center}
1042: \includegraphics[width=0.45\paperwidth,keepaspectratio]{Sample_Roles_Screen}
1043: \caption{\label{Sample_Roles_Screen}Sample Roles Screen}
1044: \end{center}
1045: \end{figure}
1046:
1047: =end latex
1048:
1049: =head2 Role Initialization
1050:
1051: 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 1052:
1053: =head1 INTRODUCTION
1054:
1055: This module enables a user to select what role he wishes to
1056: operate under (instructor, student, teaching assistant, course
1057: coordinator, etc). These roles are pre-established by the actions
1058: of upper-level users.
1059:
1060: This is part of the LearningOnline Network with CAPA project
1061: described at http://www.lon-capa.org.
1062:
1063: =head1 HANDLER SUBROUTINE
1064:
1065: This routine is called by Apache and mod_perl.
1066:
1067: =over 4
1068:
1069: =item *
1070:
1071: Roles Initialization (yes/no)
1072:
1073: =item *
1074:
1075: Get Error Message from Environment
1076:
1077: =item *
1078:
1079: Who is this?
1080:
1081: =item *
1082:
1083: Generate Page Output
1084:
1085: =item *
1086:
1087: Choice or no choice
1088:
1089: =item *
1090:
1091: Table
1092:
1093: =item *
1094:
1095: Privileges
1096:
1097: =back
1098:
1099: =cut
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