Annotation of loncom/auth/lonroles.pm, revision 1.56
1.1 harris41 1: # The LearningOnline Network with CAPA
2: # User Roles Screen
1.31 www 3: #
1.56 ! www 4: # $Id: lonroles.pm,v 1.55 2003/03/24 18:46:44 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: #
1.1 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;
1.1 harris41 53:
54: sub handler {
1.10 www 55:
1.1 harris41 56: my $r = shift;
57:
1.6 www 58: my $now=time;
59: my $then=$ENV{'user.login.time'};
60: my $envkey;
61:
1.10 www 62:
1.6 www 63: # ================================================================== Roles Init
64:
65: if ($ENV{'form.selectrole'}) {
1.33 www 66: if ($ENV{'request.course.id'}) {
67: my %temp=('logout_'.$ENV{'request.course.id'} => time);
68: &Apache::lonnet::put('email_status',\%temp);
69: }
1.55 albertel 70: &Apache::lonnet::appenv("request.course.id" => '',
71: "request.course.fn" => '',
72: "request.course.uri" => '',
73: "request.course.sec" => '',
74: "request.role" => 'cm',
1.56 ! www 75: "request.role.adv" => $ENV{'user.adv'},
1.55 albertel 76: "request.role.domain" => $ENV{'user.domain'});
1.13 www 77: foreach $envkey (keys %ENV) {
1.40 matthew 78: next if ($envkey!~/^user\.role\./);
79: my (undef,undef,$role,@pwhere)=split(/\./,$envkey);
1.6 www 80: my $where=join('.',@pwhere);
81: my $trolecode=$role.'.'.$where;
82: if ($ENV{'form.'.$trolecode}) {
1.55 albertel 83: my ($tstart,$tend)=split(/\./,$ENV{$envkey});
84: my $tstatus='is';
85: if ($tstart) {
86: if ($tstart>$then) {
87: $tstatus='future';
88: }
89: }
90: if ($tend) {
91: if ($tend<$then) { $tstatus='expired'; }
92: if ($tend<$now) { $tstatus='will_not'; }
93: }
94: if ($tstatus eq 'is') {
95: $where=~s/^\///;
96: my ($cdom,$cnum,$csec)=split(/\//,$where);
1.53 www 97: # check for keyed access
1.55 albertel 98: if (($role eq 'st') &&
99: ($ENV{'course.'.$cdom.'_'.$cnum.'.keyaccess'} eq 'yes')) {
100: unless (&Apache::lonnet::validate_access_key(
101: $ENV{'environment.key.'.$cdom.'_'.$cnum},
102: $cdom,$cnum)) {
1.53 www 103: # there is no valid key
1.55 albertel 104: if ($ENV{'form.newkey'}) {
1.53 www 105: # student attempts to register a new key
1.55 albertel 106: } else {
1.53 www 107: # print form to enter a new key
1.55 albertel 108: $r->content_type('text/html');
109: &Apache::loncommon::no_cache($r);
110: $r->send_http_header;
111: my $swinfo=&Apache::lonmenu::rawconfig();
112: my $bodytag=&Apache::loncommon::bodytag
113: ('Enter Access Key to Unlock this Course');
114: $r->print(<<ENDENTERKEY);
1.53 www 115: <head><title>Entering Course Access Key</title>
116: </head>
117: <html>
118: $bodytag
119: <script>
120: $swinfo
121: </script>
122: <form method="post">
123: <input type="hidden" name="selectrole" value="$ENV{'form.selectrole'}" />
124: <input type="text" size="20" name="newkey" value="$ENV{'form.newkey'}" />
125: <input type="submit" value="Enter key" />
126: </form>
127: </body></html>
128: ENDENTERKEY
1.55 albertel 129: return OK;
130: }
131: }
132: }
1.56 ! www 133: my $tadv=0;
! 134: if (($trolecode!~/^st/) &&
! 135: ($trolecode!~/^ta/) &&
! 136: ($trolecode!~/^cm/)) { $tadv=1; }
! 137: &Apache::lonnet::appenv(
! 138: 'request.role' => $trolecode,
! 139: 'request.role.adv' => $tadv,
! 140: 'request.role.domain' => $cdom,
! 141: 'request.course.sec' => $csec);
1.55 albertel 142: my $msg='Entering course ...';
143: if (($cnum) && ($role ne 'ca')) {
144: my ($furl,$ferr)=
145: &Apache::lonuserstate::readmap($cdom.'/'.$cnum);
146: if (($ENV{'form.orgurl'}) &&
147: ($ENV{'form.orgurl'}!~/^\/adm\/flip/)) {
148: $r->internal_redirect($ENV{'form.orgurl'});
149: return OK;
150: } else {
151: unless ($ENV{'request.course.id'}) {
152: &Apache::lonnet::appenv(
153: "request.course.id" => $cdom.'_'.$cnum);
154: $furl='/adm/notfound.html';
155: $msg=
1.27 www 156: '<h1><font color=red>Could not initialize top-level map.</font></h1>';
1.55 albertel 157: }
158: $r->content_type('text/html');
159: &Apache::loncommon::no_cache($r);
160: $r->send_http_header;
161: my $swinfo=&Apache::lonmenu::rawconfig();
162: my $bodytag=&Apache::loncommon::bodytag('Switching Role');
163: print (<<ENDREDIR);
1.20 www 164: <head><title>Entering Course</title>
165: <meta HTTP-EQUIV="Refresh" CONTENT="1; url=$furl">
166: </head>
167: <html>
1.43 www 168: $bodytag
1.26 www 169: <script>
170: $swinfo
171: </script>
1.43 www 172: <h1>$msg</h1>
1.20 www 173: </body>
174: </html>
175: ENDREDIR
176: return OK;
1.55 albertel 177: }
178: }
179: }
180: }
1.6 www 181: }
1.40 matthew 182: }
1.44 www 183:
1.10 www 184:
1.6 www 185: # =============================================================== No Roles Init
1.10 www 186:
187: $r->content_type('text/html');
1.30 albertel 188: &Apache::loncommon::no_cache($r);
1.10 www 189: $r->send_http_header;
190: return OK if $r->header_only;
191:
1.52 www 192: my $swinfo=&Apache::lonmenu::rawconfig();
1.41 www 193: my $bodytag=&Apache::loncommon::bodytag('User Roles');
1.48 www 194: my $helptag=&Apache::loncommon::help_open_topic
1.52 www 195: ("General_Intro","Click here for help");
1.10 www 196: $r->print(<<ENDHEADER);
197: <html>
198: <head>
199: <title>LON-CAPA User Roles</title>
1.41 www 200: </head>
201: $bodytag
1.45 www 202: $helptag<br />
1.26 www 203: <script>
204: $swinfo
205: window.focus();
206: </script>
1.10 www 207: ENDHEADER
1.6 www 208:
1.2 www 209: # ------------------------------------------ Get Error Message from Environment
210:
211: my ($fn,$priv,$nochoose,$error,$msg)=split(/:/,$ENV{'user.error.msg'});
1.12 www 212: if ($ENV{'user.error.msg'}) {
1.55 albertel 213: $r->log_reason(
214: "$msg for $ENV{'user.name'} domain $ENV{'user.domain'} access $priv",$fn);
1.12 www 215: }
1.1 harris41 216:
1.6 www 217: # ---------------------------------------------------------------- Who is this?
218:
219: my $advanced=0;
220: foreach $envkey (keys %ENV) {
221: if ($envkey=~/^user\.role\./) {
1.40 matthew 222: my (undef,undef,$role,@pwhere)=split(/\./,$envkey);
1.6 www 223: if ($role ne 'st') { $advanced=1; }
224: }
225: }
226:
1.2 www 227: # -------------------------------------------------------- Generate Page Output
1.6 www 228: # --------------------------------------------------------------- Error Header?
1.2 www 229: if ($error) {
230: $r->print("<h1>LON-CAPA Access Control</h1>");
1.4 www 231: $r->print("<hr><pre>Access : ".
232: Apache::lonnet::plaintext($priv)."\n");
233: $r->print("Resource: $fn\n");
234: $r->print("Action : $msg\n</pre><hr>");
1.2 www 235: } else {
1.25 www 236: if ($ENV{'user.error.msg'}) {
237: $r->print(
238: '<h3><font color=red>You need to choose another user role or '.
239: 'enter a specific course for this function</font></h3>');
240: }
1.2 www 241: }
1.6 www 242: # -------------------------------------------------------- Choice or no choice?
1.2 www 243: if ($nochoose) {
1.6 www 244: if ($advanced) {
1.55 albertel 245: $r->print("<h2>Assigned User Roles</h2>\n");
1.6 www 246: } else {
1.55 albertel 247: $r->print("<h2>Sorry ...</h2>\nThis resource might be part of");
248: if ($ENV{'request.course.id'}) {
249: $r->print(' another');
250: } else {
251: $r->print(' a certain');
252: }
253: $r->print(' course.</body></html>');
254: return OK;
1.6 www 255: }
256: } else {
257: if ($advanced) {
1.55 albertel 258: $r->print("Your home server is ".
259: $Apache::lonnet::hostname{&Apache::lonnet::homeserver
260: ($ENV{'user.name'},$ENV{'user.domain'})}.
261: "<br />\n");
262: $r->print("Author and Co-Author roles may not be available on ".
263: "servers other than your home server.");
1.6 www 264: } else {
1.55 albertel 265: $r->print("<h2>Enter a Course</h2>\n");
1.17 www 266: }
1.18 www 267: if (($ENV{'REDIRECT_QUERY_STRING'}) && ($fn)) {
268: $fn.='?'.$ENV{'REDIRECT_QUERY_STRING'};
1.6 www 269: }
1.11 www 270: $r->print('<form method=post action="'.(($fn)?$fn:$r->uri).'">');
1.6 www 271: $r->print('<input type=hidden name=orgurl value="'.$fn.'">');
272: $r->print('<input type=hidden name=selectrole value=1>');
273: }
1.27 www 274: $r->print('<br>Show all roles: <input type=checkbox name=showall');
275: if ($ENV{'form.showall'}) { $r->print(' checked'); }
276: $r->print('><input type=submit value="Display"><br>');
1.6 www 277: # ----------------------------------------------------------------------- Table
278: $r->print('<table><tr>');
279: unless ($nochoose) { $r->print('<th> </th>'); }
1.55 albertel 280: $r->print('<th>User Role</th><th colspan=2>Extent</th>'.
281: '<th>Start</th><th>End</th><th>Remark</th></tr>'."\n");
1.4 www 282:
1.3 albertel 283: foreach $envkey (sort keys %ENV) {
1.35 matthew 284: my $button = 1;
1.49 www 285: my $switchserver='';
1.2 www 286: if ($envkey=~/^user\.role\./) {
1.40 matthew 287: my (undef,undef,$role,@pwhere)=split(/\./,$envkey);
1.46 matthew 288: next if (!defined($role) || $role eq '');
1.4 www 289: my $where=join('.',@pwhere);
1.6 www 290: my $trolecode=$role.'.'.$where;
1.4 www 291: my ($tstart,$tend)=split(/\./,$ENV{$envkey});
292: my $tremark='';
293: my $tstatus='is';
294: my $tpstart=' ';
295: my $tpend=' ';
1.47 www 296: my $tfont='#000000';
1.4 www 297: if ($tstart) {
298: if ($tstart>$then) {
1.35 matthew 299: $tstatus='future';
300: if ($tstart<$now) { $tstatus='will'; }
1.4 www 301: }
302: $tpstart=localtime($tstart);
303: }
304: if ($tend) {
1.23 www 305: if ($tend<$then) {
1.35 matthew 306: $tstatus='expired';
1.23 www 307: } elsif ($tend<$now) {
1.35 matthew 308: $tstatus='will_not';
1.23 www 309: }
1.4 www 310: $tpend=localtime($tend);
311: }
1.6 www 312: if ($ENV{'request.role'} eq $trolecode) {
313: $tstatus='selected';
314: }
1.4 www 315: my $tbg;
1.35 matthew 316: if (($tstatus eq 'is') || ($tstatus eq 'selected') ||
317: ($ENV{'form.showall'})) {
318: if ($tstatus eq 'is') {
319: $tbg='#77FF77';
1.47 www 320: $tfont='#003300';
1.35 matthew 321: } elsif ($tstatus eq 'future') {
322: $tbg='#FFFF77';
1.49 www 323: $button=0;
1.35 matthew 324: } elsif ($tstatus eq 'will') {
325: $tbg='#FFAA77';
326: $tremark.='Active at next login. ';
327: } elsif ($tstatus eq 'expired') {
328: $tbg='#FF7777';
1.47 www 329: $tfont='#330000';
1.49 www 330: $button=0;
1.35 matthew 331: } elsif ($tstatus eq 'will_not') {
332: $tbg='#AAFF77';
333: $tremark.='Expired after logout. ';
334: } elsif ($tstatus eq 'selected') {
335: $tbg='#11CC55';
1.47 www 336: $tfont='#002200';
1.35 matthew 337: $tremark.='Currently selected. ';
338: }
339: my $trole;
340: if ($role =~ /^cr\//) {
341: my ($rdummy,$rdomain,$rauthor,$rrole)=split(/\//,$role);
342: $tremark.='<br>Defined by '.$rauthor.' at '.$rdomain.'.';
343: $trole=$rrole;
1.8 www 344: } else {
1.35 matthew 345: $trole=Apache::lonnet::plaintext($role);
346: }
347: my $ttype;
348: my $twhere;
349: my ($tdom,$trest,$tsection)=
350: split(/\//,Apache::lonnet::declutter($where));
351: # First, Co-Authorship roles
352: if ($role eq 'ca') {
1.39 stredwic 353: my $home = &Apache::lonnet::homeserver($trest,$tdom);
1.49 www 354: if ($home ne $r->dir_config('lonHostID')) {
355: $button=0;
1.51 www 356: $switchserver=&Apache::lonnet::escape('http://'.
357: $Apache::lonnet::hostname{$home}.
358: '/adm/login?domain='.$ENV{'user.domain'}.
359: '&username='.$ENV{'user.name'}.
360: '&firsturl=/priv/'.$trest);
1.49 www 361: }
1.35 matthew 362: #next if ($home eq 'no_host');
363: $home = $Apache::lonnet::hostname{$home};
364: $ttype='Construction Space';
365: $twhere='User: '.$trest.'<br />Domain: '.$tdom.'<br />'.
366: ' Server: '.$home;
367: $ENV{'course.'.$tdom.'_'.$trest.'.description'}='ca';
368: } elsif ($role eq 'au') {
369: # Authors
370: my $home = &Apache::lonnet::homeserver
1.39 stredwic 371: ($ENV{'user.name'},$ENV{'user.domain'});
1.49 www 372: if ($home ne $r->dir_config('lonHostID')) {
373: $button=0;
1.51 www 374: $switchserver=&Apache::lonnet::escape('http://'.
375: $Apache::lonnet::hostname{$home}.
376: '/adm/login?domain='.$ENV{'user.domain'}.
377: '&username='.$ENV{'user.name'}.
378: '&firsturl=/priv/'.$ENV{'user.name'});
1.49 www 379: }
1.35 matthew 380: #next if ($home eq 'no_host');
381: $home = $Apache::lonnet::hostname{$home};
382: $ttype='Construction Space';
383: $twhere='Domain: '.$tdom.'<br />Server: '.$home;
384: $ENV{'course.'.$tdom.'_'.$trest.'.description'}='ca';
385: } elsif ($trest) {
386: $ttype='Course';
387: if ($tsection) {
388: $ttype.='<br>Section/Group: '.$tsection;
1.37 albertel 389: }
1.35 matthew 390: my $tcourseid=$tdom.'_'.$trest;
391: if ($ENV{'course.'.$tcourseid.'.description'}) {
1.47 www 392: $twhere=$ENV{'course.'.$tcourseid.'.description'};
393: unless ($twhere eq 'Currently not available') {
1.55 albertel 394: $twhere.=' <font size="-2">'.
1.49 www 395: &Apache::loncommon::syllabuswrapper('Syllabus',$trest,$tdom,$tfont).
396: '</font>';
1.55 albertel 397: }
1.8 www 398: } else {
1.35 matthew 399: my %newhash=Apache::lonnet::coursedescription
400: ($tcourseid);
401: if (%newhash) {
1.49 www 402: $twhere=$newhash{'description'}.
403: ' <font size="-2">'.
404: &Apache::loncommon::syllabuswrapper('Syllabus',$trest,$tdom,$tfont).
405: '</font>';
1.35 matthew 406: } else {
407: $twhere='Currently not available';
408: $ENV{'course.'.$tcourseid.'.description'}=$twhere;
409: }
1.8 www 410: }
1.37 albertel 411: if ($role ne 'st') { $twhere.="<br />Domain:".$tdom; }
1.35 matthew 412: } elsif ($tdom) {
413: $ttype='Domain';
414: $twhere=$tdom;
415: } else {
416: $ttype='System';
417: $twhere='system wide';
1.13 www 418: }
1.35 matthew 419:
420: $r->print('<tr bgcolor='.$tbg.'>');
421: unless ($nochoose) {
422: if (!$button) {
1.49 www 423: if ($switchserver) {
424: $r->print('<td><a href="/adm/logout?handover='.
425: $switchserver.'">Switch Server</a></td>');
426: } else {
427: $r->print('<td> </td>');
428: }
1.35 matthew 429: } elsif ($tstatus eq 'is') {
430: $r->print('<td><input type=submit value=Select name="'.
431: $trolecode.'"></td>');
432: } elsif ($ENV{'user.adv'}) {
433: $r->print
434: ('<td><input type=submit value="Re-Initialize"'.
435: ' name="'.$trolecode.'"></td>');
436: } else {
437: $r->print('<td> </td>');
438: }
1.6 www 439: }
1.55 albertel 440: $r->print('<td><font color="'.$tfont.'">'.$trole.
1.47 www 441: '</font></td><td><font color="'.$tfont.'">'.$ttype.
442: '</font></td><td><font color="'.$tfont.'">'.$twhere.
443: '</font></td><td><font color="'.$tfont.'">'.$tpstart.
444: '</font></td><td><font color="'.$tfont.'">'.$tpend.
445: '</font></td><td><font color="'.$tfont.'">'.$tremark.
446: ' </font></td></tr>'."\n");
1.55 albertel 447: }
1.4 www 448: }
449: }
1.14 www 450: my $tremark='';
1.47 www 451: my $tfont='#003300';
1.14 www 452: if ($ENV{'request.role'} eq 'cm') {
1.19 www 453: $r->print('<tr bgcolor="#11CC55">');
1.14 www 454: $tremark='Currently selected.';
1.47 www 455: $tfont='#002200';
1.14 www 456: } else {
457: $r->print('<tr bgcolor="#77FF77">');
458: }
459: unless ($nochoose) {
1.55 albertel 460: if ($ENV{'request.role'} ne 'cm') {
461: $r->print('<td><input type=submit value=Select name="cm"></td>');
462: } else {
463: $r->print('<td> </td>');
464: }
1.14 www 465: }
1.47 www 466: $r->print('<td colspan=5><font color="'.$tfont.'">No role specified'.
467: '</font></td><td><font color="'.$tfont.'">'.$tremark.
468: ' </font></td></tr>'."\n");
1.4 www 469:
470: $r->print('</table>');
471: unless ($nochoose) {
472: $r->print("</form>\n");
473: }
1.22 harris41 474: # ------------------------------------------------------------ Privileges Info
1.55 albertel 475: if (($advanced) && (($ENV{'user.error.msg'}) || ($error))) {
476: $r->print('<hr><h2>Current Privileges</h2>');
1.4 www 477:
1.55 albertel 478: foreach $envkey (sort keys %ENV) {
479: if ($envkey=~/^user\.priv\.$ENV{'request.role'}\./) {
480: my $where=$envkey;
481: $where=~s/^user\.priv\.$ENV{'request.role'}\.//;
482: my $ttype;
483: my $twhere;
484: my ($tdom,$trest,$tsec)=
485: split(/\//,Apache::lonnet::declutter($where));
486: if ($trest) {
487: if ($ENV{'course.'.$tdom.'_'.$trest.'.description'} eq 'ca') {
488: $ttype='Construction Space';
489: $twhere='User: '.$trest.', Domain: '.$tdom;
490: } else {
491: $ttype='Course';
492: $twhere=$ENV{'course.'.$tdom.'_'.$trest.'.description'};
493: if ($tsec) {
494: $twhere.=' (Section/Group: '.$tsec.')';
495: }
496: }
497: } elsif ($tdom) {
498: $ttype='Domain';
499: $twhere=$tdom;
500: } else {
501: $ttype='System';
502: $twhere='/';
503: }
504: $r->print("\n<h3>".$ttype.': '.$twhere.'</h3><ul>');
505: foreach (sort split(/:/,$ENV{$envkey})) {
506: if ($_) {
507: my ($prv,$restr)=split(/\&/,$_);
508: my $trestr='';
509: if ($restr ne 'F') {
510: my $i;
511: $trestr.=' (';
512: for ($i=0;$i<length($restr);$i++) {
513: $trestr.=
514: Apache::lonnet::plaintext(substr($restr,$i,1));
515: if ($i<length($restr)-1) { $trestr.=', '; }
516: }
517: $trestr.=')';
518: }
519: $r->print('<li>'.
520: Apache::lonnet::plaintext($prv).$trestr.
521: '</li>');
522: }
523: }
524: $r->print('</ul>');
525: }
526: }
1.4 www 527: }
1.2 www 528:
1.1 harris41 529: $r->print("</body></html>\n");
530: return OK;
531: }
532:
533: 1;
534: __END__
1.32 harris41 535:
536: =head1 NAME
537:
538: Apache::lonroles - User Roles Screen
539:
540: =head1 SYNOPSIS
541:
542: Invoked by /etc/httpd/conf/srm.conf:
543:
544: <Location /adm/roles>
545: PerlAccessHandler Apache::lonacc
546: SetHandler perl-script
547: PerlHandler Apache::lonroles
548: ErrorDocument 403 /adm/login
549: ErrorDocument 500 /adm/errorhandler
550: </Location>
551:
552: =head1 INTRODUCTION
553:
554: This module enables a user to select what role he wishes to
555: operate under (instructor, student, teaching assistant, course
556: coordinator, etc). These roles are pre-established by the actions
557: of upper-level users.
558:
559: This is part of the LearningOnline Network with CAPA project
560: described at http://www.lon-capa.org.
561:
562: =head1 HANDLER SUBROUTINE
563:
564: This routine is called by Apache and mod_perl.
565:
566: =over 4
567:
568: =item *
569:
570: Roles Initialization (yes/no)
571:
572: =item *
573:
574: Get Error Message from Environment
575:
576: =item *
577:
578: Who is this?
579:
580: =item *
581:
582: Generate Page Output
583:
584: =item *
585:
586: Choice or no choice
587:
588: =item *
589:
590: Table
591:
592: =item *
593:
594: Privileges
595:
596: =back
597:
598: =cut
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