Annotation of loncom/auth/lonroles.pm, revision 1.73
1.1 harris41 1: # The LearningOnline Network with CAPA
2: # User Roles Screen
1.31 www 3: #
1.73 ! www 4: # $Id: lonroles.pm,v 1.72 2003/09/18 20:10:18 www 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: #
1.1 harris41 28: # (Directory Indexer
29: # (Login Screen
1.32 harris41 30: # YEAR=1999
1.1 harris41 31: # 5/21/99,5/22,5/25,5/26,5/31,6/2,6/10,7/12,7/14 Gerd Kortemeyer)
32: # 11/23 Gerd Kortemeyer)
1.32 harris41 33: # YEAR=2000
1.7 www 34: # 1/14,03/06,06/01,07/22,07/24,07/25,
1.19 www 35: # 09/04,09/06,09/28,09/29,09/30,10/2,10/5,10/26,10/28,
1.20 www 36: # 12/08,12/28,
1.32 harris41 37: # YEAR=2001
1.20 www 38: # 01/15/01 Gerd Kortemeyer
1.28 www 39: # 03/02,05/03,05/25,05/30,06/01,07/06,08/06 Gerd Kortemeyer
1.33 www 40: # 12/29 Gerd Kortemeyer
1.32 harris41 41: #
42: ###
1.22 harris41 43:
1.1 harris41 44: package Apache::lonroles;
45:
46: use strict;
47: use Apache::lonnet();
1.7 www 48: use Apache::lonuserstate();
1.1 harris41 49: use Apache::Constants qw(:common);
1.2 www 50: use Apache::File();
1.26 www 51: use Apache::lonmenu;
1.29 albertel 52: use Apache::loncommon;
1.57 www 53: use Apache::lonannounce;
1.72 www 54: use Apache::lonlocal;
1.1 harris41 55:
1.62 matthew 56: sub redirect_user {
57: my ($r,$title,$url,$msg) = @_;
58: $msg = $title if (! defined($msg));
1.73 ! www 59: &Apache::loncommon::content_type($r,'text/html');
1.62 matthew 60: &Apache::loncommon::no_cache($r);
61: $r->send_http_header;
62: my $swinfo=&Apache::lonmenu::rawconfig();
63: my $bodytag=&Apache::loncommon::bodytag('Switching Role');
64: $r->print (<<ENDREDIR);
65: <head><title>$title</title>
66: <meta HTTP-EQUIV="Refresh" CONTENT="1; url=$url">
67: </head>
68: <html>
69: $bodytag
70: <script>
71: $swinfo
72: </script>
73: <h1>$msg</h1>
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;
85: my $then=$ENV{'user.login.time'};
86: my $envkey;
87:
1.10 www 88:
1.6 www 89: # ================================================================== Roles Init
90:
91: if ($ENV{'form.selectrole'}) {
1.33 www 92: if ($ENV{'request.course.id'}) {
93: my %temp=('logout_'.$ENV{'request.course.id'} => time);
94: &Apache::lonnet::put('email_status',\%temp);
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',
1.56 www 101: "request.role.adv" => $ENV{'user.adv'},
1.55 albertel 102: "request.role.domain" => $ENV{'user.domain'});
1.13 www 103: foreach $envkey (keys %ENV) {
1.40 matthew 104: next if ($envkey!~/^user\.role\./);
105: my (undef,undef,$role,@pwhere)=split(/\./,$envkey);
1.6 www 106: my $where=join('.',@pwhere);
107: my $trolecode=$role.'.'.$where;
108: if ($ENV{'form.'.$trolecode}) {
1.55 albertel 109: my ($tstart,$tend)=split(/\./,$ENV{$envkey});
110: my $tstatus='is';
111: if ($tstart) {
112: if ($tstart>$then) {
113: $tstatus='future';
114: }
115: }
116: if ($tend) {
117: if ($tend<$then) { $tstatus='expired'; }
118: if ($tend<$now) { $tstatus='will_not'; }
119: }
120: if ($tstatus eq 'is') {
121: $where=~s/^\///;
122: my ($cdom,$cnum,$csec)=split(/\//,$where);
1.53 www 123: # check for keyed access
1.55 albertel 124: if (($role eq 'st') &&
125: ($ENV{'course.'.$cdom.'_'.$cnum.'.keyaccess'} eq 'yes')) {
126: unless (&Apache::lonnet::validate_access_key(
127: $ENV{'environment.key.'.$cdom.'_'.$cnum},
128: $cdom,$cnum)) {
1.53 www 129: # there is no valid key
1.55 albertel 130: if ($ENV{'form.newkey'}) {
1.53 www 131: # student attempts to register a new key
1.55 albertel 132: } else {
1.53 www 133: # print form to enter a new key
1.73 ! www 134: &Apache::loncommon::content_type($r,'text/html');
1.55 albertel 135: &Apache::loncommon::no_cache($r);
136: $r->send_http_header;
137: my $swinfo=&Apache::lonmenu::rawconfig();
138: my $bodytag=&Apache::loncommon::bodytag
139: ('Enter Access Key to Unlock this Course');
140: $r->print(<<ENDENTERKEY);
1.53 www 141: <head><title>Entering Course Access Key</title>
142: </head>
143: <html>
144: $bodytag
145: <script>
146: $swinfo
147: </script>
148: <form method="post">
149: <input type="hidden" name="selectrole" value="$ENV{'form.selectrole'}" />
150: <input type="text" size="20" name="newkey" value="$ENV{'form.newkey'}" />
151: <input type="submit" value="Enter key" />
152: </form>
153: </body></html>
154: ENDENTERKEY
1.55 albertel 155: return OK;
156: }
157: }
158: }
1.56 www 159: my $tadv=0;
160: if (($trolecode!~/^st/) &&
161: ($trolecode!~/^ta/) &&
162: ($trolecode!~/^cm/)) { $tadv=1; }
163: &Apache::lonnet::appenv(
164: 'request.role' => $trolecode,
165: 'request.role.adv' => $tadv,
166: 'request.role.domain' => $cdom,
167: 'request.course.sec' => $csec);
1.72 www 168: my $msg=&mt('Entering course ...');
1.62 matthew 169:
1.55 albertel 170: if (($cnum) && ($role ne 'ca')) {
171: my ($furl,$ferr)=
172: &Apache::lonuserstate::readmap($cdom.'/'.$cnum);
173: if (($ENV{'form.orgurl'}) &&
174: ($ENV{'form.orgurl'}!~/^\/adm\/flip/)) {
1.67 albertel 175: my $dest=$ENV{'form.orgurl'};
1.71 albertel 176: if ( &Apache::lonnet::mod_perl_version() == 2 ) {
1.67 albertel 177: &Apache::lonnet::cleanenv();
1.69 albertel 178: }
1.67 albertel 179: $r->internal_redirect($dest);
1.55 albertel 180: return OK;
181: } else {
182: unless ($ENV{'request.course.id'}) {
183: &Apache::lonnet::appenv(
184: "request.course.id" => $cdom.'_'.$cnum);
1.61 www 185: $furl='/adm/roles?tryagain=1';
1.55 albertel 186: $msg=
1.72 www 187: '<h1><font color=red>'.
188: &mt('Could not initialize course at this time.').
189: '</font></h1><h3>'.&mt('Please try again.').'</h3>'.$ferr;
1.55 albertel 190: }
1.58 bowersj2 191:
192: # Check to see if the user is a CC entering a course
193: # for the first time
194: my (undef, undef, $role, $courseid) = split(/\./, $envkey);
195: if (substr($courseid, 0, 1) eq '/') {
196: $courseid = substr($courseid, 1);
197: }
198: $courseid =~ s/\//_/;
199: if ($role eq 'cc' && $ENV{'course.' . $courseid .
200: '.course.helper.not.run'}) {
201: $furl = "/adm/helper/course.initialization.helper";
202: }
1.62 matthew 203: #
204: # Send the user to the course they selected
205: &redirect_user($r,'Entering Course',
206: $furl,$msg);
1.20 www 207: return OK;
1.55 albertel 208: }
209: }
1.62 matthew 210: #
211: # Send the user to the construction space they selected
212: if ($role =~ /^(au|ca)$/) {
213: my $redirect_url = '/priv/';
214: if ($role eq 'au') {
215: $redirect_url.=$ENV{'user.name'};
216: } else {
217: $where =~ /\/(.*)$/;
218: $redirect_url .= $1;
219: }
220: $redirect_url .= '/';
221: &redirect_user($r,'Entering Construction Space',
222: $redirect_url);
223: return OK;
224: }
1.55 albertel 225: }
226: }
1.6 www 227: }
1.40 matthew 228: }
1.44 www 229:
1.10 www 230:
1.6 www 231: # =============================================================== No Roles Init
1.10 www 232:
1.73 ! www 233: &Apache::loncommon::content_type($r,'text/html');
1.30 albertel 234: &Apache::loncommon::no_cache($r);
1.10 www 235: $r->send_http_header;
236: return OK if $r->header_only;
237:
1.52 www 238: my $swinfo=&Apache::lonmenu::rawconfig();
1.41 www 239: my $bodytag=&Apache::loncommon::bodytag('User Roles');
1.48 www 240: my $helptag=&Apache::loncommon::help_open_topic
1.52 www 241: ("General_Intro","Click here for help");
1.10 www 242: $r->print(<<ENDHEADER);
243: <html>
244: <head>
245: <title>LON-CAPA User Roles</title>
1.41 www 246: </head>
247: $bodytag
1.45 www 248: $helptag<br />
1.26 www 249: <script>
250: $swinfo
251: window.focus();
252: </script>
1.10 www 253: ENDHEADER
1.6 www 254:
1.2 www 255: # ------------------------------------------ Get Error Message from Environment
256:
257: my ($fn,$priv,$nochoose,$error,$msg)=split(/:/,$ENV{'user.error.msg'});
1.12 www 258: if ($ENV{'user.error.msg'}) {
1.55 albertel 259: $r->log_reason(
260: "$msg for $ENV{'user.name'} domain $ENV{'user.domain'} access $priv",$fn);
1.12 www 261: }
1.1 harris41 262:
1.61 www 263: # ------------------------------------------------- Can this user re-init, etc?
1.6 www 264:
1.61 www 265: my $advanced=$ENV{'user.adv'};
266: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},['tryagain']);
267: my $tryagain=$ENV{'form.tryagain'};
1.6 www 268:
1.2 www 269: # -------------------------------------------------------- Generate Page Output
1.6 www 270: # --------------------------------------------------------------- Error Header?
1.2 www 271: if ($error) {
272: $r->print("<h1>LON-CAPA Access Control</h1>");
1.4 www 273: $r->print("<hr><pre>Access : ".
274: Apache::lonnet::plaintext($priv)."\n");
275: $r->print("Resource: $fn\n");
276: $r->print("Action : $msg\n</pre><hr>");
1.2 www 277: } else {
1.25 www 278: if ($ENV{'user.error.msg'}) {
279: $r->print(
1.72 www 280: '<h3><font color=red>'.
281: &mt('You need to choose another user role or enter a specific course for this function').'</font></h3>');
1.25 www 282: }
1.2 www 283: }
1.6 www 284: # -------------------------------------------------------- Choice or no choice?
1.2 www 285: if ($nochoose) {
1.6 www 286: if ($advanced) {
1.72 www 287: $r->print("<h2>".&mt('Assigned User Roles')."</h2>\n");
1.6 www 288: } else {
1.72 www 289: $r->print("<h2>".&mt('Sorry ...')."</h2>\n".
290: &mt('This resource might be part of'));
1.55 albertel 291: if ($ENV{'request.course.id'}) {
1.72 www 292: $r->print(&mt(' another'));
1.55 albertel 293: } else {
1.72 www 294: $r->print(&mt(' a certain'));
1.55 albertel 295: }
1.72 www 296: $r->print(&mt(' course.').'</body></html>');
1.55 albertel 297: return OK;
1.6 www 298: }
299: } else {
300: if ($advanced) {
1.72 www 301: $r->print(&mt("Your home server is ").
1.55 albertel 302: $Apache::lonnet::hostname{&Apache::lonnet::homeserver
303: ($ENV{'user.name'},$ENV{'user.domain'})}.
304: "<br />\n");
1.72 www 305: $r->print(&mt(
306: "Author and Co-Author roles may not be available on servers other than your home server."));
1.6 www 307: } else {
1.72 www 308: $r->print("<h2>".&mt('Select a Course to Enter')."</h2>\n");
1.17 www 309: }
1.18 www 310: if (($ENV{'REDIRECT_QUERY_STRING'}) && ($fn)) {
311: $fn.='?'.$ENV{'REDIRECT_QUERY_STRING'};
1.6 www 312: }
1.11 www 313: $r->print('<form method=post action="'.(($fn)?$fn:$r->uri).'">');
1.6 www 314: $r->print('<input type=hidden name=orgurl value="'.$fn.'">');
315: $r->print('<input type=hidden name=selectrole value=1>');
316: }
1.63 www 317: if ($ENV{'user.adv'}) {
318: $r->print(
1.72 www 319: '<br />'.&mt('Show all roles').': <input type="checkbox" name="showall"');
1.63 www 320: if ($ENV{'form.showall'}) { $r->print(' checked'); }
1.72 www 321: $r->print('><input type=submit value="'.&mt('Display').'">');
1.63 www 322: }
1.6 www 323: # ----------------------------------------------------------------------- Table
1.63 www 324: $r->print('<br /><table><tr>');
1.6 www 325: unless ($nochoose) { $r->print('<th> </th>'); }
1.72 www 326: $r->print('<th>'.&mt('User Role').'</th><th colspan=2>'.&mt('Extent').
327: '</th><th>'.&mt('Start').'</th><th>'.&mt('End').'</th><th>'.
328: &mt('Remark').'</th></tr>'."\n");
1.4 www 329:
1.3 albertel 330: foreach $envkey (sort keys %ENV) {
1.35 matthew 331: my $button = 1;
1.49 www 332: my $switchserver='';
1.2 www 333: if ($envkey=~/^user\.role\./) {
1.40 matthew 334: my (undef,undef,$role,@pwhere)=split(/\./,$envkey);
1.46 matthew 335: next if (!defined($role) || $role eq '');
1.4 www 336: my $where=join('.',@pwhere);
1.6 www 337: my $trolecode=$role.'.'.$where;
1.4 www 338: my ($tstart,$tend)=split(/\./,$ENV{$envkey});
339: my $tremark='';
340: my $tstatus='is';
341: my $tpstart=' ';
342: my $tpend=' ';
1.47 www 343: my $tfont='#000000';
1.4 www 344: if ($tstart) {
345: if ($tstart>$then) {
1.35 matthew 346: $tstatus='future';
347: if ($tstart<$now) { $tstatus='will'; }
1.4 www 348: }
349: $tpstart=localtime($tstart);
350: }
351: if ($tend) {
1.23 www 352: if ($tend<$then) {
1.35 matthew 353: $tstatus='expired';
1.23 www 354: } elsif ($tend<$now) {
1.35 matthew 355: $tstatus='will_not';
1.23 www 356: }
1.4 www 357: $tpend=localtime($tend);
358: }
1.6 www 359: if ($ENV{'request.role'} eq $trolecode) {
360: $tstatus='selected';
361: }
1.4 www 362: my $tbg;
1.35 matthew 363: if (($tstatus eq 'is') || ($tstatus eq 'selected') ||
364: ($ENV{'form.showall'})) {
365: if ($tstatus eq 'is') {
366: $tbg='#77FF77';
1.47 www 367: $tfont='#003300';
1.35 matthew 368: } elsif ($tstatus eq 'future') {
369: $tbg='#FFFF77';
1.49 www 370: $button=0;
1.35 matthew 371: } elsif ($tstatus eq 'will') {
372: $tbg='#FFAA77';
1.72 www 373: $tremark.=&mt('Active at next login. ');
1.35 matthew 374: } elsif ($tstatus eq 'expired') {
375: $tbg='#FF7777';
1.47 www 376: $tfont='#330000';
1.49 www 377: $button=0;
1.35 matthew 378: } elsif ($tstatus eq 'will_not') {
379: $tbg='#AAFF77';
1.72 www 380: $tremark.=&mt('Expired after logout. ');
1.35 matthew 381: } elsif ($tstatus eq 'selected') {
382: $tbg='#11CC55';
1.47 www 383: $tfont='#002200';
1.72 www 384: $tremark.=&mt('Currently selected. ');
1.35 matthew 385: }
386: my $trole;
387: if ($role =~ /^cr\//) {
388: my ($rdummy,$rdomain,$rauthor,$rrole)=split(/\//,$role);
1.72 www 389: $tremark.='<br>'.&mt('Defined by ').$rauthor.
390: &mt(' at ').$rdomain.'.';
1.35 matthew 391: $trole=$rrole;
1.8 www 392: } else {
1.35 matthew 393: $trole=Apache::lonnet::plaintext($role);
394: }
395: my $ttype;
396: my $twhere;
397: my ($tdom,$trest,$tsection)=
398: split(/\//,Apache::lonnet::declutter($where));
399: # First, Co-Authorship roles
400: if ($role eq 'ca') {
1.39 stredwic 401: my $home = &Apache::lonnet::homeserver($trest,$tdom);
1.49 www 402: if ($home ne $r->dir_config('lonHostID')) {
403: $button=0;
1.51 www 404: $switchserver=&Apache::lonnet::escape('http://'.
405: $Apache::lonnet::hostname{$home}.
406: '/adm/login?domain='.$ENV{'user.domain'}.
407: '&username='.$ENV{'user.name'}.
408: '&firsturl=/priv/'.$trest);
1.49 www 409: }
1.35 matthew 410: #next if ($home eq 'no_host');
411: $home = $Apache::lonnet::hostname{$home};
1.72 www 412: $ttype=&mt('Construction Space');
413: $twhere=&mt('User').': '.$trest.'<br />'.&mt('Domain').
414: ': '.$tdom.'<br />'.
415: ' '.&mt('Server').': '.$home;
1.35 matthew 416: $ENV{'course.'.$tdom.'_'.$trest.'.description'}='ca';
417: } elsif ($role eq 'au') {
418: # Authors
419: my $home = &Apache::lonnet::homeserver
1.39 stredwic 420: ($ENV{'user.name'},$ENV{'user.domain'});
1.49 www 421: if ($home ne $r->dir_config('lonHostID')) {
422: $button=0;
1.51 www 423: $switchserver=&Apache::lonnet::escape('http://'.
424: $Apache::lonnet::hostname{$home}.
425: '/adm/login?domain='.$ENV{'user.domain'}.
426: '&username='.$ENV{'user.name'}.
427: '&firsturl=/priv/'.$ENV{'user.name'});
1.49 www 428: }
1.35 matthew 429: #next if ($home eq 'no_host');
430: $home = $Apache::lonnet::hostname{$home};
1.72 www 431: $ttype=&mt('Construction Space');
432: $twhere=&mt('Domain').': '.$tdom.'<br />'.&mt('Server').
433: ': '.$home;
1.35 matthew 434: $ENV{'course.'.$tdom.'_'.$trest.'.description'}='ca';
435: } elsif ($trest) {
1.72 www 436: $ttype=&mt('Course');
1.35 matthew 437: if ($tsection) {
1.72 www 438: $ttype.='<br>'.&mt('Section/Group').': '.$tsection;
1.37 albertel 439: }
1.35 matthew 440: my $tcourseid=$tdom.'_'.$trest;
441: if ($ENV{'course.'.$tcourseid.'.description'}) {
1.47 www 442: $twhere=$ENV{'course.'.$tcourseid.'.description'};
1.72 www 443: unless ($twhere eq &mt('Currently not available')) {
1.55 albertel 444: $twhere.=' <font size="-2">'.
1.72 www 445: &Apache::loncommon::syllabuswrapper(&mt('Syllabus'),$trest,$tdom,$tfont).
1.49 www 446: '</font>';
1.55 albertel 447: }
1.8 www 448: } else {
1.35 matthew 449: my %newhash=Apache::lonnet::coursedescription
450: ($tcourseid);
451: if (%newhash) {
1.49 www 452: $twhere=$newhash{'description'}.
453: ' <font size="-2">'.
1.72 www 454: &Apache::loncommon::syllabuswrapper(&mt('Syllabus'),$trest,$tdom,$tfont).
1.49 www 455: '</font>';
1.35 matthew 456: } else {
1.72 www 457: $twhere=&mt('Currently not available');
1.35 matthew 458: $ENV{'course.'.$tcourseid.'.description'}=$twhere;
459: }
1.8 www 460: }
1.72 www 461: if ($role ne 'st') { $twhere.="<br />".&mt('Domain').":".$tdom; }
1.35 matthew 462: } elsif ($tdom) {
1.72 www 463: $ttype=&mt('Domain');
1.35 matthew 464: $twhere=$tdom;
465: } else {
1.72 www 466: $ttype=&mt('System');
467: $twhere=&mt('system wide');
1.13 www 468: }
1.35 matthew 469:
470: $r->print('<tr bgcolor='.$tbg.'>');
471: unless ($nochoose) {
472: if (!$button) {
1.49 www 473: if ($switchserver) {
474: $r->print('<td><a href="/adm/logout?handover='.
1.72 www 475: $switchserver.'">'.&mt('Switch Server').'</a></td>');
1.49 www 476: } else {
477: $r->print('<td> </td>');
478: }
1.35 matthew 479: } elsif ($tstatus eq 'is') {
1.72 www 480: $r->print('<td><input type=submit value="'.
481: &mt('Select').'" name="'.
1.35 matthew 482: $trolecode.'"></td>');
1.61 www 483: } elsif ($tryagain) {
484: $r->print
1.72 www 485: ('<td><input type=submit value="'.
486: &mt('Try Selecting Again').'" name="'.$trolecode.'"></td>');
1.61 www 487: } elsif ($advanced) {
1.35 matthew 488: $r->print
1.72 www 489: ('<td><input type=submit value="'.
490: &mt('Re-Initialize').'" name="'.$trolecode.'"></td>');
1.35 matthew 491: } else {
492: $r->print('<td> </td>');
493: }
1.6 www 494: }
1.57 www 495: $tremark.=&Apache::lonannounce::showday(time,1,
496: &Apache::lonannounce::readcalendar($tdom.'_'.$trest));
497:
1.55 albertel 498: $r->print('<td><font color="'.$tfont.'">'.$trole.
1.47 www 499: '</font></td><td><font color="'.$tfont.'">'.$ttype.
500: '</font></td><td><font color="'.$tfont.'">'.$twhere.
501: '</font></td><td><font color="'.$tfont.'">'.$tpstart.
502: '</font></td><td><font color="'.$tfont.'">'.$tpend.
503: '</font></td><td><font color="'.$tfont.'">'.$tremark.
504: ' </font></td></tr>'."\n");
1.55 albertel 505: }
1.4 www 506: }
507: }
1.14 www 508: my $tremark='';
1.47 www 509: my $tfont='#003300';
1.14 www 510: if ($ENV{'request.role'} eq 'cm') {
1.19 www 511: $r->print('<tr bgcolor="#11CC55">');
1.72 www 512: $tremark=&mt('Currently selected. ');
1.47 www 513: $tfont='#002200';
1.14 www 514: } else {
515: $r->print('<tr bgcolor="#77FF77">');
516: }
517: unless ($nochoose) {
1.55 albertel 518: if ($ENV{'request.role'} ne 'cm') {
1.72 www 519: $r->print('<td><input type=submit value="'.
520: &mt('Select').'" name="cm"></td>');
1.55 albertel 521: } else {
522: $r->print('<td> </td>');
523: }
1.14 www 524: }
1.72 www 525: $r->print('<td colspan=5><font color="'.$tfont.'">'.&mt('No role specified').
1.47 www 526: '</font></td><td><font color="'.$tfont.'">'.$tremark.
527: ' </font></td></tr>'."\n");
1.4 www 528:
529: $r->print('</table>');
530: unless ($nochoose) {
531: $r->print("</form>\n");
532: }
1.22 harris41 533: # ------------------------------------------------------------ Privileges Info
1.55 albertel 534: if (($advanced) && (($ENV{'user.error.msg'}) || ($error))) {
535: $r->print('<hr><h2>Current Privileges</h2>');
1.4 www 536:
1.55 albertel 537: foreach $envkey (sort keys %ENV) {
538: if ($envkey=~/^user\.priv\.$ENV{'request.role'}\./) {
539: my $where=$envkey;
540: $where=~s/^user\.priv\.$ENV{'request.role'}\.//;
541: my $ttype;
542: my $twhere;
543: my ($tdom,$trest,$tsec)=
544: split(/\//,Apache::lonnet::declutter($where));
545: if ($trest) {
546: if ($ENV{'course.'.$tdom.'_'.$trest.'.description'} eq 'ca') {
547: $ttype='Construction Space';
548: $twhere='User: '.$trest.', Domain: '.$tdom;
549: } else {
550: $ttype='Course';
551: $twhere=$ENV{'course.'.$tdom.'_'.$trest.'.description'};
552: if ($tsec) {
553: $twhere.=' (Section/Group: '.$tsec.')';
554: }
555: }
556: } elsif ($tdom) {
557: $ttype='Domain';
558: $twhere=$tdom;
559: } else {
560: $ttype='System';
561: $twhere='/';
562: }
563: $r->print("\n<h3>".$ttype.': '.$twhere.'</h3><ul>');
564: foreach (sort split(/:/,$ENV{$envkey})) {
565: if ($_) {
566: my ($prv,$restr)=split(/\&/,$_);
567: my $trestr='';
568: if ($restr ne 'F') {
569: my $i;
570: $trestr.=' (';
571: for ($i=0;$i<length($restr);$i++) {
572: $trestr.=
573: Apache::lonnet::plaintext(substr($restr,$i,1));
574: if ($i<length($restr)-1) { $trestr.=', '; }
575: }
576: $trestr.=')';
577: }
578: $r->print('<li>'.
579: Apache::lonnet::plaintext($prv).$trestr.
580: '</li>');
581: }
582: }
583: $r->print('</ul>');
584: }
585: }
1.4 www 586: }
1.66 www 587: $r->print(&Apache::lonnet::getannounce());
1.65 www 588: if ($advanced) {
589: $r->print('<p><small><i>This is LON-CAPA '.
590: $r->dir_config('lonVersion').'</i></small></p>');
591: }
1.1 harris41 592: $r->print("</body></html>\n");
593: return OK;
594: }
595:
596: 1;
597: __END__
1.32 harris41 598:
599: =head1 NAME
600:
601: Apache::lonroles - User Roles Screen
602:
603: =head1 SYNOPSIS
604:
605: Invoked by /etc/httpd/conf/srm.conf:
606:
607: <Location /adm/roles>
608: PerlAccessHandler Apache::lonacc
609: SetHandler perl-script
610: PerlHandler Apache::lonroles
611: ErrorDocument 403 /adm/login
612: ErrorDocument 500 /adm/errorhandler
613: </Location>
1.64 bowersj2 614:
615: =head1 OVERVIEW
616:
617: =head2 Choosing Roles
618:
619: C<lonroles> is a handler that allows a user to switch roles in
620: mid-session. LON-CAPA attempts to work with "No Role Specified", the
621: default role that a user has before selecting a role, as widely as
622: possible, but certain handlers for example need specification which
623: course they should act on, etc. Both in this scenario, and when the
624: handler determines via C<lonnet>'s C<&allowed> function that a certain
625: action is not allowed, C<lonroles> is used as error handler. This
626: allows the user to select another role which may have permission to do
627: what they were trying to do. C<lonroles> can also be accessed via the
628: B<CRS> button in the Remote Control.
629:
630: =begin latex
631:
632: \begin{figure}
633: \begin{center}
634: \includegraphics[width=0.45\paperwidth,keepaspectratio]{Sample_Roles_Screen}
635: \caption{\label{Sample_Roles_Screen}Sample Roles Screen}
636: \end{center}
637: \end{figure}
638:
639: =end latex
640:
641: =head2 Role Initialization
642:
643: 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 644:
645: =head1 INTRODUCTION
646:
647: This module enables a user to select what role he wishes to
648: operate under (instructor, student, teaching assistant, course
649: coordinator, etc). These roles are pre-established by the actions
650: of upper-level users.
651:
652: This is part of the LearningOnline Network with CAPA project
653: described at http://www.lon-capa.org.
654:
655: =head1 HANDLER SUBROUTINE
656:
657: This routine is called by Apache and mod_perl.
658:
659: =over 4
660:
661: =item *
662:
663: Roles Initialization (yes/no)
664:
665: =item *
666:
667: Get Error Message from Environment
668:
669: =item *
670:
671: Who is this?
672:
673: =item *
674:
675: Generate Page Output
676:
677: =item *
678:
679: Choice or no choice
680:
681: =item *
682:
683: Table
684:
685: =item *
686:
687: Privileges
688:
689: =back
690:
691: =cut
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