Annotation of loncom/auth/lonroles.pm, revision 1.94

1.1       harris41    1: # The LearningOnline Network with CAPA
                      2: # User Roles Screen
1.31      www         3: #
1.94    ! albertel    4: # $Id: lonroles.pm,v 1.93 2004/07/03 19:44:53 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;
                     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;
1.57      www        39: use Apache::lonannounce;
1.72      www        40: use Apache::lonlocal;
1.1       harris41   41: 
1.62      matthew    42: sub redirect_user {
                     43:     my ($r,$title,$url,$msg) = @_;
                     44:     $msg = $title if (! defined($msg));
1.73      www        45:     &Apache::loncommon::content_type($r,'text/html');
1.62      matthew    46:     &Apache::loncommon::no_cache($r);
                     47:     $r->send_http_header;
                     48:     my $swinfo=&Apache::lonmenu::rawconfig();
                     49:     my $bodytag=&Apache::loncommon::bodytag('Switching Role');
1.92      www        50: # Note to style police: 
                     51: # This must only replace the spaces, nothing else, or it bombs elsewhere.
                     52:     $url=~s/ /\%20/g;
1.93      albertel   53:     $r->print(<<ENDREDIR);
1.62      matthew    54: <head><title>$title</title>
                     55: <meta HTTP-EQUIV="Refresh" CONTENT="1; url=$url">
                     56: </head>
                     57: <html>
                     58: $bodytag
                     59: <script>
                     60: $swinfo
                     61: </script>
                     62: <h1>$msg</h1>
                     63: </body>
                     64: </html>
                     65: ENDREDIR
                     66:     return;
                     67: }
                     68: 
1.1       harris41   69: sub handler {
1.10      www        70: 
1.1       harris41   71:     my $r = shift;
                     72: 
1.6       www        73:     my $now=time;
                     74:     my $then=$ENV{'user.login.time'};
                     75:     my $envkey;
                     76: 
1.10      www        77: 
1.6       www        78: # ================================================================== Roles Init
                     79: 
                     80:     if ($ENV{'form.selectrole'}) {
1.33      www        81: 	if ($ENV{'request.course.id'}) {
                     82: 	    my %temp=('logout_'.$ENV{'request.course.id'} => time);
                     83: 	    &Apache::lonnet::put('email_status',\%temp);
                     84:         }
1.55      albertel   85: 	&Apache::lonnet::appenv("request.course.id"   => '',
                     86: 				"request.course.fn"   => '',
                     87: 				"request.course.uri"  => '',
                     88: 				"request.course.sec"  => '',
                     89: 				"request.role"        => 'cm',
1.56      www        90:                                 "request.role.adv"    => $ENV{'user.adv'},
1.55      albertel   91: 				"request.role.domain" => $ENV{'user.domain'});
1.13      www        92:         foreach $envkey (keys %ENV) {
1.40      matthew    93:             next if ($envkey!~/^user\.role\./);
                     94: 	    my (undef,undef,$role,@pwhere)=split(/\./,$envkey);
1.6       www        95:             my $where=join('.',@pwhere);
                     96:             my $trolecode=$role.'.'.$where;
                     97:             if ($ENV{'form.'.$trolecode}) {
1.55      albertel   98: 		my ($tstart,$tend)=split(/\./,$ENV{$envkey});
                     99: 		my $tstatus='is';
                    100: 		if ($tstart) {
                    101: 		    if ($tstart>$then) { 
                    102: 			$tstatus='future';
                    103: 		    }
                    104: 		}
                    105: 		if ($tend) {
                    106: 		    if ($tend<$then) { $tstatus='expired'; }
                    107: 		    if ($tend<$now) { $tstatus='will_not'; }
                    108: 		}
                    109: 		if ($tstatus eq 'is') {
                    110: 		    $where=~s/^\///;
                    111: 		    my ($cdom,$cnum,$csec)=split(/\//,$where);
1.53      www       112: # check for keyed access
1.55      albertel  113: 		    if (($role eq 'st') && 
                    114:                        ($ENV{'course.'.$cdom.'_'.$cnum.'.keyaccess'} eq 'yes')) {
1.89      www       115: # who is key authority?
                    116: 			my $authdom=$cdom;
                    117: 			my $authnum=$cnum;
                    118: 			if ($ENV{'course.'.$cdom.'_'.$cnum.'.keyauth'}) {
                    119: 			    ($authnum,$authdom)=
                    120: 				split(/\W/,$ENV{'course.'.$cdom.'_'.$cnum.'.keyauth'});
                    121: 			}
                    122: # check with key authority
                    123: 			unless (&Apache::lonnet::validate_access_key(
1.55      albertel  124: 				     $ENV{'environment.key.'.$cdom.'_'.$cnum},
1.89      www       125: 					     $authdom,$authnum)) {
1.53      www       126: # there is no valid key
1.55      albertel  127: 			     if ($ENV{'form.newkey'}) {
1.53      www       128: # student attempts to register a new key
1.89      www       129: 				 &Apache::loncommon::content_type($r,'text/html');
                    130: 				 &Apache::loncommon::no_cache($r);
                    131: 				 $r->send_http_header;
                    132: 				 my $swinfo=&Apache::lonmenu::rawconfig();
                    133: 				 my $bodytag=&Apache::loncommon::bodytag
                    134: 				    ('Verifying Access Key to Unlock this Course');
1.90      www       135: 				 my $buttontext=&mt('Enter Course');
                    136: 				 my $message=&mt('Successfully registered key');
                    137: 				 my $assignresult=
                    138: 				     &Apache::lonnet::assign_access_key(
                    139: 						     $ENV{'form.newkey'},
                    140: 						     $authdom,$authnum,
1.91      www       141: 						     $cdom,$cnum,
1.90      www       142:                                                      $ENV{'user.domain'},
                    143: 						     $ENV{'user.name'},
                    144: 	      'Assigned from '.$ENV{'REMOTE_ADDR'}.' at '.localtime().' for '.
                    145:                                                      $trolecode);
                    146: 				 unless ($assignresult eq 'ok') {
                    147: 				     $assignresult=~s/^error\:\s*//;
                    148: 				     $message=&mt($assignresult).
                    149: 				     '<br /><a href="/adm/logout">'.
1.89      www       150: 				     &mt('Logout').'</a>';
1.90      www       151: 				     $buttontext=&mt('Re-Enter Key');
                    152: 				 }
1.89      www       153: 				 $r->print(<<ENDENTEREDKEY);
                    154: <head><title>Verifying Course Access Key</title>
                    155: </head>
                    156: <html>
                    157: $bodytag
                    158: <script>
                    159: $swinfo
                    160: </script>
                    161: <form method="post">
                    162: <input type="hidden" name="selectrole" value="1" />
                    163: <input type="hidden" name="$trolecode" value="1" />
1.90      www       164: <font size="+2">$message</font><br />
1.89      www       165: <input type="submit" value="$buttontext" />
                    166: </form>
                    167: </body></html>
                    168: ENDENTEREDKEY
                    169:                                  return OK;
1.55      albertel  170: 			     } else {
1.53      www       171: # print form to enter a new key
1.73      www       172: 				 &Apache::loncommon::content_type($r,'text/html');
1.55      albertel  173: 				 &Apache::loncommon::no_cache($r);
                    174: 				 $r->send_http_header;
                    175: 				 my $swinfo=&Apache::lonmenu::rawconfig();
                    176: 				 my $bodytag=&Apache::loncommon::bodytag
                    177: 				    ('Enter Access Key to Unlock this Course');
                    178: 				 $r->print(<<ENDENTERKEY);
1.53      www       179: <head><title>Entering Course Access Key</title>
                    180: </head>
                    181: <html>
                    182: $bodytag
                    183: <script>
                    184: $swinfo
                    185: </script>
                    186: <form method="post">
1.89      www       187: <input type="hidden" name="selectrole" value="1" />
                    188: <input type="hidden" name="$trolecode" value="1" />
1.53      www       189: <input type="text" size="20" name="newkey" value="$ENV{'form.newkey'}" />
                    190: <input type="submit" value="Enter key" />
                    191: </form>
                    192: </body></html>
                    193: ENDENTERKEY
1.55      albertel  194: 				 return OK;
                    195: 			     }
                    196: 			 }
                    197: 		     }
1.87      www       198: 		    &Apache::lonnet::log($ENV{'user.domain'},
                    199: 					 $ENV{'user.name'},
                    200: 					 $ENV{'user.home'},
                    201: 					 "Role ".$trolecode);
1.56      www       202:                     my $tadv=0;
                    203:                     if (($trolecode!~/^st/) && 
                    204:                         ($trolecode!~/^ta/) && 
                    205:                         ($trolecode!~/^cm/)) { $tadv=1; }
                    206: 		    &Apache::lonnet::appenv(
                    207:                                            'request.role'        => $trolecode,
                    208: 					   'request.role.adv'    => $tadv,
                    209: 					   'request.role.domain' => $cdom,
                    210: 					   'request.course.sec'  => $csec);
1.72      www       211: 		    my $msg=&mt('Entering course ...');
1.62      matthew   212: 
1.55      albertel  213: 		    if (($cnum) && ($role ne 'ca')) {
                    214: 			my ($furl,$ferr)=
                    215: 			    &Apache::lonuserstate::readmap($cdom.'/'.$cnum);
                    216: 			if (($ENV{'form.orgurl'}) && 
                    217: 			    ($ENV{'form.orgurl'}!~/^\/adm\/flip/)) {
1.67      albertel  218: 			    my $dest=$ENV{'form.orgurl'};
1.71      albertel  219: 			    if ( &Apache::lonnet::mod_perl_version() == 2 ) {
1.67      albertel  220: 				&Apache::lonnet::cleanenv();
1.69      albertel  221: 			    }
1.67      albertel  222: 			    $r->internal_redirect($dest);
1.55      albertel  223: 			    return OK;
                    224: 			} else {
                    225: 			    unless ($ENV{'request.course.id'}) {
                    226: 				&Apache::lonnet::appenv(
                    227: 				      "request.course.id"  => $cdom.'_'.$cnum);
1.61      www       228: 				$furl='/adm/roles?tryagain=1';
1.55      albertel  229: 				$msg=
1.72      www       230: 				    '<h1><font color=red>'.
                    231: 			 &mt('Could not initialize course at this time.').
                    232: 		    '</font></h1><h3>'.&mt('Please try again.').'</h3>'.$ferr;
1.55      albertel  233: 			    }
1.58      bowersj2  234: 
                    235: 			    # Check to see if the user is a CC entering a course 
                    236: 			    # for the first time
                    237: 			    my (undef, undef, $role, $courseid) = split(/\./, $envkey);
                    238: 			    if (substr($courseid, 0, 1) eq '/') {
                    239: 				$courseid = substr($courseid, 1);
                    240: 			    }
                    241: 			    $courseid =~ s/\//_/;
                    242: 			    if ($role eq 'cc' && $ENV{'course.' . $courseid . 
                    243: 							  '.course.helper.not.run'}) {
                    244: 				$furl = "/adm/helper/course.initialization.helper";
                    245: 			    }
1.62      matthew   246:                             #
                    247:                             # Send the user to the course they selected
1.78      sakharuk  248:                             &redirect_user($r,&mt('Entering Course'),
1.62      matthew   249:                                            $furl,$msg);
1.20      www       250:                             return OK;
1.55      albertel  251: 			}
                    252: 		    }
1.62      matthew   253:                     #
                    254:                     # Send the user to the construction space they selected
                    255:                     if ($role =~ /^(au|ca)$/) {
                    256:                         my $redirect_url = '/priv/';
                    257:                         if ($role eq 'au') {
                    258:                             $redirect_url.=$ENV{'user.name'};
                    259:                         } else {
                    260:                             $where =~ /\/(.*)$/;
                    261:                             $redirect_url .= $1;
                    262:                         }
                    263:                         $redirect_url .= '/';
1.78      sakharuk  264:                         &redirect_user($r,&mt('Entering Construction Space'),
1.62      matthew   265:                                        $redirect_url);
                    266:                         return OK;
                    267:                     }
1.55      albertel  268: 		}
                    269:             }
1.6       www       270:         }
1.40      matthew   271:     }
1.44      www       272: 
1.10      www       273: 
1.6       www       274: # =============================================================== No Roles Init
1.10      www       275: 
1.73      www       276:     &Apache::loncommon::content_type($r,'text/html');
1.30      albertel  277:     &Apache::loncommon::no_cache($r);
1.10      www       278:     $r->send_http_header;
                    279:     return OK if $r->header_only;
                    280: 
1.52      www       281:     my $swinfo=&Apache::lonmenu::rawconfig();
1.41      www       282:     my $bodytag=&Apache::loncommon::bodytag('User Roles');
1.94    ! albertel  283:     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       284:     $r->print(<<ENDHEADER);
                    285: <html>
                    286: <head>
                    287: <title>LON-CAPA User Roles</title>
1.41      www       288: </head>
                    289: $bodytag
1.45      www       290: $helptag<br />
1.26      www       291: <script>
                    292: $swinfo
                    293: window.focus();
                    294: </script>
1.10      www       295: ENDHEADER
1.6       www       296: 
1.2       www       297: # ------------------------------------------ Get Error Message from Environment
                    298: 
                    299:     my ($fn,$priv,$nochoose,$error,$msg)=split(/:/,$ENV{'user.error.msg'});
1.12      www       300:     if ($ENV{'user.error.msg'}) {
1.55      albertel  301: 	$r->log_reason(
                    302:    "$msg for $ENV{'user.name'} domain $ENV{'user.domain'} access $priv",$fn);
1.12      www       303:     }
1.1       harris41  304: 
1.61      www       305: # ------------------------------------------------- Can this user re-init, etc?
1.6       www       306: 
1.61      www       307:     my $advanced=$ENV{'user.adv'};
                    308:     &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},['tryagain']);
                    309:     my $tryagain=$ENV{'form.tryagain'};
1.6       www       310: 
1.2       www       311: # -------------------------------------------------------- Generate Page Output
1.6       www       312: # --------------------------------------------------------------- Error Header?
1.2       www       313:     if ($error) {
                    314: 	$r->print("<h1>LON-CAPA Access Control</h1>");
1.4       www       315:         $r->print("<hr><pre>Access  : ".
                    316:                   Apache::lonnet::plaintext($priv)."\n");
                    317:         $r->print("Resource: $fn\n");
                    318:         $r->print("Action  : $msg\n</pre><hr>");
1.2       www       319:     } else {
1.25      www       320:         if ($ENV{'user.error.msg'}) {
                    321: 	    $r->print(
1.72      www       322:  '<h3><font color=red>'.
                    323:  &mt('You need to choose another user role or enter a specific course for this function').'</font></h3>');
1.25      www       324: 	}
1.2       www       325:     }
1.6       www       326: # -------------------------------------------------------- Choice or no choice?
1.2       www       327:     if ($nochoose) {
1.6       www       328:         if ($advanced) {
1.72      www       329: 	    $r->print("<h2>".&mt('Assigned User Roles')."</h2>\n");
1.6       www       330:         } else {
1.72      www       331: 	    $r->print("<h2>".&mt('Sorry ...')."</h2>\n".
                    332: 		      &mt('This resource might be part of'));
1.55      albertel  333: 	    if ($ENV{'request.course.id'}) {
1.72      www       334: 		$r->print(&mt(' another'));
1.55      albertel  335: 	    } else {
1.72      www       336: 		$r->print(&mt(' a certain'));
1.55      albertel  337: 	    } 
1.72      www       338: 	    $r->print(&mt(' course.').'</body></html>');
1.55      albertel  339: 	    return OK;
1.6       www       340:         } 
                    341:     } else {
                    342:         if ($advanced) {
1.72      www       343: 	    $r->print(&mt("Your home server is ").
1.55      albertel  344: 		      $Apache::lonnet::hostname{&Apache::lonnet::homeserver
                    345:                       ($ENV{'user.name'},$ENV{'user.domain'})}.
                    346: 		      "<br />\n");
1.72      www       347: 	    $r->print(&mt(
                    348:       "Author and Co-Author roles may not be available on servers other than your home server."));
1.17      www       349:         }
1.18      www       350:         if (($ENV{'REDIRECT_QUERY_STRING'}) && ($fn)) {
                    351:     	    $fn.='?'.$ENV{'REDIRECT_QUERY_STRING'};
1.6       www       352:         }
1.84      www       353:         $r->print('<form method="post" name="rolechoice" action="'.(($fn)?$fn:$r->uri).'">');
1.6       www       354:         $r->print('<input type=hidden name=orgurl value="'.$fn.'">');
                    355:         $r->print('<input type=hidden name=selectrole value=1>');
                    356:     }
1.63      www       357:     if ($ENV{'user.adv'}) {
                    358: 	$r->print(
1.72      www       359: 	      '<br />'.&mt('Show all roles').': <input type="checkbox" name="showall"');
1.63      www       360: 	if ($ENV{'form.showall'}) { $r->print(' checked'); }
1.72      www       361: 	$r->print('><input type=submit value="'.&mt('Display').'">');
1.63      www       362:     }
1.4       www       363: 
1.75      albertel  364:     my (%roletext,%sortrole,%roleclass);
1.84      www       365:     my $countactive=0;
                    366:     my $inrole=0;
                    367:     my $possiblerole='';
1.3       albertel  368:     foreach $envkey (sort keys %ENV) {
1.35      matthew   369:         my $button = 1;
1.49      www       370:         my $switchserver='';
1.75      albertel  371: 	my $roletext;
                    372: 	my $sortkey;
1.2       www       373:         if ($envkey=~/^user\.role\./) {
1.40      matthew   374: 	    my (undef,undef,$role,@pwhere)=split(/\./,$envkey);
1.46      matthew   375:             next if (!defined($role) || $role eq '');
1.4       www       376:             my $where=join('.',@pwhere);
1.6       www       377:             my $trolecode=$role.'.'.$where;
1.4       www       378:             my ($tstart,$tend)=split(/\./,$ENV{$envkey});
                    379:             my $tremark='';
                    380:             my $tstatus='is';
                    381:             my $tpstart='&nbsp;';
                    382:             my $tpend='&nbsp;';
1.47      www       383:             my $tfont='#000000';
1.4       www       384:             if ($tstart) {
                    385: 		if ($tstart>$then) { 
1.35      matthew   386:                     $tstatus='future';
                    387:                     if ($tstart<$now) { $tstatus='will'; }
1.4       www       388:                 }
1.74      www       389:                 $tpstart=&Apache::lonlocal::locallocaltime($tstart);
1.4       www       390:             }
                    391:             if ($tend) {
1.23      www       392:                 if ($tend<$then) { 
1.35      matthew   393:                     $tstatus='expired'; 
1.23      www       394:                 } elsif ($tend<$now) { 
1.35      matthew   395:                     $tstatus='will_not'; 
1.23      www       396:                 }
1.74      www       397:                 $tpend=&Apache::lonlocal::locallocaltime($tend);
1.4       www       398:             }
1.6       www       399:             if ($ENV{'request.role'} eq $trolecode) {
                    400: 		$tstatus='selected';
                    401:             }
1.4       www       402:             my $tbg;
1.35      matthew   403:             if (($tstatus eq 'is') || ($tstatus eq 'selected') ||
                    404:                 ($ENV{'form.showall'})) {
                    405:                 if ($tstatus eq 'is') {
                    406:                     $tbg='#77FF77';
1.47      www       407:                     $tfont='#003300';
1.84      www       408: 		    $possiblerole=$trolecode;
                    409: 		    $countactive++;
1.35      matthew   410:                 } elsif ($tstatus eq 'future') {
                    411:                     $tbg='#FFFF77';
1.49      www       412:                     $button=0;
1.35      matthew   413:                 } elsif ($tstatus eq 'will') {
                    414:                     $tbg='#FFAA77';
1.72      www       415:                     $tremark.=&mt('Active at next login. ');
1.35      matthew   416:                 } elsif ($tstatus eq 'expired') {
                    417:                     $tbg='#FF7777';
1.47      www       418:                     $tfont='#330000';
1.49      www       419:                     $button=0;
1.35      matthew   420:                 } elsif ($tstatus eq 'will_not') {
                    421:                     $tbg='#AAFF77';
1.72      www       422:                     $tremark.=&mt('Expired after logout. ');
1.35      matthew   423:                 } elsif ($tstatus eq 'selected') {
                    424:                     $tbg='#11CC55';
1.47      www       425:                     $tfont='#002200';
1.84      www       426: 		    $inrole=1;
1.86      albertel  427: 		    $countactive++;
1.72      www       428:                     $tremark.=&mt('Currently selected. ');
1.35      matthew   429:                 }
                    430:                 my $trole;
                    431:                 if ($role =~ /^cr\//) {
                    432:                     my ($rdummy,$rdomain,$rauthor,$rrole)=split(/\//,$role);
1.72      www       433:                     $tremark.='<br>'.&mt('Defined by ').$rauthor.
                    434: 			&mt(' at ').$rdomain.'.';
1.35      matthew   435:                     $trole=$rrole;
1.8       www       436:                 } else {
1.35      matthew   437:                     $trole=Apache::lonnet::plaintext($role);
                    438:                 }
                    439:                 my $ttype;
                    440:                 my $twhere;
                    441:                 my ($tdom,$trest,$tsection)=
                    442:                     split(/\//,Apache::lonnet::declutter($where));
                    443:                 # First, Co-Authorship roles
                    444:                 if ($role eq 'ca') {
1.39      stredwic  445:                     my $home = &Apache::lonnet::homeserver($trest,$tdom);
1.83      albertel  446: 		    my $allowed=0;
                    447: 		    my @ids=&Apache::lonnet::current_machine_ids();
                    448: 		    foreach my $id (@ids) { if ($id eq $home) { $allowed=1; } }
                    449:                     if (!$allowed) {
1.49      www       450: 			$button=0;
1.51      www       451:                         $switchserver=&Apache::lonnet::escape('http://'.
                    452:                          $Apache::lonnet::hostname{$home}.
                    453:                          '/adm/login?domain='.$ENV{'user.domain'}.
                    454: 			  '&username='.$ENV{'user.name'}.
                    455:                           '&firsturl=/priv/'.$trest);
1.49      www       456:                     }
1.35      matthew   457:                     #next if ($home eq 'no_host');
                    458:                     $home = $Apache::lonnet::hostname{$home};
1.78      sakharuk  459:                     $ttype='Construction Space';
1.72      www       460:                     $twhere=&mt('User').': '.$trest.'<br />'.&mt('Domain').
                    461: 			': '.$tdom.'<br />'.
                    462:                         ' '.&mt('Server').':&nbsp;'.$home;
1.35      matthew   463:                     $ENV{'course.'.$tdom.'_'.$trest.'.description'}='ca';
1.82      www       464: 		    $tremark.=&Apache::lonhtmlcommon::authorbombs('/res/'.$tdom.'/'.$trest.'/');
1.75      albertel  465: 		    $sortkey=$role."$trest:$tdom";
1.35      matthew   466:                 } elsif ($role eq 'au') {
                    467:                     # Authors
                    468:                     my $home = &Apache::lonnet::homeserver
1.39      stredwic  469:                         ($ENV{'user.name'},$ENV{'user.domain'});
1.83      albertel  470: 		    my $allowed=0;
                    471: 		    my @ids=&Apache::lonnet::current_machine_ids();
                    472: 		    foreach my $id (@ids) { if ($id eq $home) { $allowed=1; } }
                    473:                     if (!$allowed) {
1.49      www       474: 			$button=0;
1.51      www       475:                         $switchserver=&Apache::lonnet::escape('http://'.
                    476:                          $Apache::lonnet::hostname{$home}.
                    477:                           '/adm/login?domain='.$ENV{'user.domain'}.
                    478: 			   '&username='.$ENV{'user.name'}.
                    479:                            '&firsturl=/priv/'.$ENV{'user.name'});
1.49      www       480:                     }
1.35      matthew   481:                     #next if ($home eq 'no_host');
                    482:                     $home = $Apache::lonnet::hostname{$home};
1.78      sakharuk  483:                     $ttype='Construction Space';
1.72      www       484:                     $twhere=&mt('Domain').': '.$tdom.'<br />'.&mt('Server').
                    485: 			':&nbsp;'.$home;
1.35      matthew   486:                     $ENV{'course.'.$tdom.'_'.$trest.'.description'}='ca';
1.82      www       487: 		    $tremark.=&Apache::lonhtmlcommon::authorbombs('/res/'.$tdom.'/'.$ENV{'user.name'}.'/');
1.75      albertel  488: 		    $sortkey=$role;
1.35      matthew   489:                 } elsif ($trest) {
1.78      sakharuk  490:                     $ttype='Course';
1.35      matthew   491:                     if ($tsection) {
1.72      www       492:                         $ttype.='<br>'.&mt('Section/Group').': '.$tsection;
1.37      albertel  493: 		    }
1.35      matthew   494:                     my $tcourseid=$tdom.'_'.$trest;
                    495:                     if ($ENV{'course.'.$tcourseid.'.description'}) {
1.47      www       496:                         $twhere=$ENV{'course.'.$tcourseid.'.description'};
1.80      albertel  497: 			$sortkey=$role."\0".$tdom."\0".$twhere."\0".$envkey;
1.72      www       498:                         unless ($twhere eq &mt('Currently not available')) {
1.55      albertel  499: 			    $twhere.=' <font size="-2">'.
1.72      www       500:         &Apache::loncommon::syllabuswrapper(&mt('Syllabus'),$trest,$tdom,$tfont).
1.49      www       501:                                     '</font>';
1.55      albertel  502: 			}
1.8       www       503:                     } else {
1.35      matthew   504:                         my %newhash=Apache::lonnet::coursedescription
                    505:                             ($tcourseid);
                    506:                         if (%newhash) {
1.80      albertel  507: 			    $sortkey=$role."\0".$tdom."\0".$newhash{'description'}.
1.77      albertel  508: 				"\0".$envkey;
1.49      www       509:                             $twhere=$newhash{'description'}.
                    510:                               ' <font size="-2">'.
1.72      www       511:         &Apache::loncommon::syllabuswrapper(&mt('Syllabus'),$trest,$tdom,$tfont).
1.49      www       512:                               '</font>';
1.35      matthew   513:                         } else {
1.72      www       514:                             $twhere=&mt('Currently not available');
1.35      matthew   515:                             $ENV{'course.'.$tcourseid.'.description'}=$twhere;
1.80      albertel  516: 			    $sortkey=$role."\0".$tdom."\0".$twhere."\0".$envkey;
1.35      matthew   517:                         }
1.8       www       518:                     }
1.72      www       519: 		    if ($role ne 'st') { $twhere.="<br />".&mt('Domain').":".$tdom; }
1.35      matthew   520:                 } elsif ($tdom) {
1.78      sakharuk  521:                     $ttype='Domain';
1.35      matthew   522:                     $twhere=$tdom;
1.75      albertel  523: 		    $sortkey=$role.$twhere;
1.35      matthew   524:                 } else {
1.78      sakharuk  525:                     $ttype='System';
1.72      www       526:                     $twhere=&mt('system wide');
1.75      albertel  527: 		    $sortkey=$role.$twhere;
1.13      www       528:                 }
1.35      matthew   529:  
1.75      albertel  530:                 $roletext.='<tr bgcolor='.$tbg.'>';
1.35      matthew   531:                 unless ($nochoose) {
                    532:                     if (!$button) {
1.49      www       533: 			if ($switchserver) {
1.75      albertel  534: 			    $roletext.='<td><a href="/adm/logout?handover='.
                    535:                               $switchserver.'">'.&mt('Switch Server').'</a></td>';
1.49      www       536:                         } else {
1.75      albertel  537:                             $roletext.=('<td>&nbsp;</td>');
1.49      www       538:                         }
1.35      matthew   539:                     } elsif ($tstatus eq 'is') {
1.75      albertel  540:                         $roletext.=('<td><input type=submit value="'.
1.72      www       541: 				  &mt('Select').'" name="'.
1.35      matthew   542:                                   $trolecode.'"></td>');
1.61      www       543:                     } elsif ($tryagain) {
1.75      albertel  544:                         $roletext.=
                    545: 			    '<td><input type=submit value="'.
                    546: 		  &mt('Try Selecting Again').'" name="'.$trolecode.'"></td>';
1.61      www       547:                     } elsif ($advanced) {
1.75      albertel  548:                         $roletext.=
                    549:                             '<td><input type=submit value="'.
                    550: 		        &mt('Re-Initialize').'" name="'.$trolecode.'"></td>';
1.35      matthew   551:                     } else {
1.75      albertel  552:                         $roletext.='<td>&nbsp;</td>';
1.35      matthew   553:                     }
1.6       www       554:                 }
1.57      www       555:                 $tremark.=&Apache::lonannounce::showday(time,1,
                    556:                          &Apache::lonannounce::readcalendar($tdom.'_'.$trest));
                    557:                 
1.75      albertel  558: 		$roletext.='<td><font color="'.$tfont.'">'.$trole.
1.47      www       559:                       '</font></td><td><font color="'.$tfont.'">'.$ttype.
                    560:                       '</font></td><td><font color="'.$tfont.'">'.$twhere.
                    561:                       '</font></td><td><font color="'.$tfont.'">'.$tpstart.
                    562:                       '</font></td><td><font color="'.$tfont.'">'.$tpend.
                    563:                       '</font></td><td><font color="'.$tfont.'">'.$tremark.
1.75      albertel  564:                       '&nbsp;</font></td></tr>'."\n";
                    565: 		$roletext{$envkey}=$roletext;
                    566: 		if (!$sortkey) {$sortkey=$twhere."\0".$envkey;}
                    567: 		$sortrole{$sortkey}=$envkey;
                    568: 		$roleclass{$envkey}=$ttype;
1.55      albertel  569: 	    }
1.4       www       570:         }
1.75      albertel  571:     }
1.84      www       572: # No active roles
                    573:     if ($countactive==0) {
                    574: 	if ($inrole) {
                    575: 	    $r->print('<h2>'.&mt('Currently no additional roles or courses').'</h2>');
                    576: 	} else {
                    577: 	    $r->print('<h2>'.&mt('Currently no active roles or courses').'</h2>');
                    578: 	}
                    579: 	$r->print('</form></body></html>');
                    580: 	return OK;
                    581: # Is there only one choice?
1.88      www       582:     } elsif (($countactive==1) && ($ENV{'request.role'} eq 'cm')) {
1.84      www       583: 	$r->print('<h3>'.&mt('Please stand by.').'</h3>'.
                    584: 	    '<input type="hidden" name="'.$possiblerole.'" value="1" />');
                    585: 	$r->print("</form>\n");
                    586: 	$r->rflush();
                    587: 	$r->print('<script>document.forms.rolechoice.submit();</script>');
                    588: 	$r->print('</body></html>');
                    589: 	return OK;
                    590:     }
                    591: # More than one possible role
                    592: # ----------------------------------------------------------------------- Table
                    593:     unless (($advanced) || ($nochoose)) {
                    594: 	$r->print("<h2>".&mt('Select a Course to Enter')."</h2>\n");
                    595:     }
                    596:     $r->print('<br /><table><tr>');
                    597:     unless ($nochoose) { $r->print('<th>&nbsp;</th>'); }
                    598:     $r->print('<th>'.&mt('User Role').'</th><th colspan=2>'.&mt('Extent').
                    599:          '</th><th>'.&mt('Start').'</th><th>'.&mt('End').'</th><th>'.
                    600: 	      &mt('Remark').'</th></tr>'."\n");
1.76      albertel  601:     my $doheaders=-1;
1.78      sakharuk  602:     foreach my $type ('Construction Space','Course','Domain','System') {
1.76      albertel  603: 	my $haverole=0;
1.75      albertel  604: 	foreach my $which (sort {uc($a) cmp uc($b)} (keys(%sortrole))) {
                    605: 	    if ($roleclass{$sortrole{$which}} =~ /^\Q$type\E/) { 
1.76      albertel  606: 		$haverole=1;
1.75      albertel  607: 	    }
1.76      albertel  608: 	}
                    609: 	if ($haverole) { $doheaders++; }
                    610:     }
1.78      sakharuk  611:     foreach my $type ('Construction Space','Course','Domain','System') {
1.76      albertel  612: 	my $output;
                    613: 	foreach my $which (sort {uc($a) cmp uc($b)} (keys(%sortrole))) {
                    614: 	    if ($roleclass{$sortrole{$which}} =~ /^\Q$type\E/) { 
1.78      sakharuk  615: 		$output.=&mt($roletext{$sortrole{$which}});
1.76      albertel  616: 	    }
                    617: 	}
                    618: 	if ($output) {
                    619: 	    if ($doheaders > 0) {
1.77      albertel  620: 		$r->print("<tr bgcolor='#BBffBB'>".
1.79      sakharuk  621: 			  "<td align='center' colspan='7'>".&mt($type)."</td>");
1.76      albertel  622: 	    }
                    623: 	    $r->print($output);	    
1.75      albertel  624: 	}
1.4       www       625:     }
1.14      www       626:     my $tremark='';
1.47      www       627:     my $tfont='#003300';
1.14      www       628:     if ($ENV{'request.role'} eq 'cm') {
1.19      www       629: 	$r->print('<tr bgcolor="#11CC55">');
1.72      www       630:         $tremark=&mt('Currently selected. ');
1.47      www       631:         $tfont='#002200';
1.14      www       632:     } else {
                    633:         $r->print('<tr bgcolor="#77FF77">');
                    634:     }
                    635:     unless ($nochoose) {
1.55      albertel  636: 	if ($ENV{'request.role'} ne 'cm') {
1.72      www       637: 	    $r->print('<td><input type=submit value="'.
                    638: 		      &mt('Select').'" name="cm"></td>');
1.55      albertel  639: 	} else {
                    640: 	    $r->print('<td>&nbsp;</td>');
                    641: 	}
1.14      www       642:     }
1.72      www       643:     $r->print('<td colspan=5><font color="'.$tfont.'">'.&mt('No role specified').
1.47      www       644:       '</font></td><td><font color="'.$tfont.'">'.$tremark.
                    645:       '&nbsp;</font></td></tr>'."\n");
1.4       www       646: 
                    647:     $r->print('</table>');
                    648:     unless ($nochoose) {
                    649: 	$r->print("</form>\n");
                    650:     }
1.22      harris41  651: # ------------------------------------------------------------ Privileges Info
1.55      albertel  652:     if (($advanced) && (($ENV{'user.error.msg'}) || ($error))) {
                    653: 	$r->print('<hr><h2>Current Privileges</h2>');
1.4       www       654: 
1.55      albertel  655: 	foreach $envkey (sort keys %ENV) {
                    656: 	    if ($envkey=~/^user\.priv\.$ENV{'request.role'}\./) {
                    657: 		my $where=$envkey;
                    658: 		$where=~s/^user\.priv\.$ENV{'request.role'}\.//;
                    659: 		my $ttype;
                    660: 		my $twhere;
                    661: 		my ($tdom,$trest,$tsec)=
                    662: 		    split(/\//,Apache::lonnet::declutter($where));
                    663: 		if ($trest) {
                    664: 		    if ($ENV{'course.'.$tdom.'_'.$trest.'.description'} eq 'ca') {
                    665: 			$ttype='Construction Space';
                    666: 			$twhere='User: '.$trest.', Domain: '.$tdom;
                    667: 		    } else {
                    668: 			$ttype='Course';
                    669: 			$twhere=$ENV{'course.'.$tdom.'_'.$trest.'.description'};
                    670: 			if ($tsec) {
                    671: 			    $twhere.=' (Section/Group: '.$tsec.')';
                    672: 			}
                    673: 		    }
                    674: 		} elsif ($tdom) {
                    675: 		    $ttype='Domain';
                    676: 		    $twhere=$tdom;
                    677: 		} else {
                    678: 		    $ttype='System';
                    679: 		    $twhere='/';
                    680: 		}
                    681: 		$r->print("\n<h3>".$ttype.': '.$twhere.'</h3><ul>');
                    682: 		foreach (sort split(/:/,$ENV{$envkey})) {
                    683: 		    if ($_) {
                    684: 			my ($prv,$restr)=split(/\&/,$_);
                    685: 			my $trestr='';
                    686: 			if ($restr ne 'F') {
                    687: 			    my $i;
                    688: 			    $trestr.=' (';
                    689: 			    for ($i=0;$i<length($restr);$i++) {
                    690: 				$trestr.=
                    691: 			       Apache::lonnet::plaintext(substr($restr,$i,1));
                    692: 				if ($i<length($restr)-1) { $trestr.=', '; }
                    693: 			    }
                    694: 			    $trestr.=')';
                    695: 			}
                    696: 			$r->print('<li>'.
                    697: 				  Apache::lonnet::plaintext($prv).$trestr.
                    698: 				  '</li>');
                    699: 		    }
                    700: 		}
                    701: 		$r->print('</ul>');
                    702: 	    }
                    703: 	}
1.4       www       704:     }
1.66      www       705:     $r->print(&Apache::lonnet::getannounce());
1.65      www       706:     if ($advanced) {
                    707: 	$r->print('<p><small><i>This is LON-CAPA '.
1.85      www       708: 		  $r->dir_config('lonVersion').'</i><br />'.
                    709: 		  '<a href="/adm/logout">'.&mt('Logout').'</a></small></p>');
1.65      www       710:     }
1.1       harris41  711:     $r->print("</body></html>\n");
                    712:     return OK;
                    713: } 
                    714: 
                    715: 1;
                    716: __END__
1.32      harris41  717: 
                    718: =head1 NAME
                    719: 
                    720: Apache::lonroles - User Roles Screen
                    721: 
                    722: =head1 SYNOPSIS
                    723: 
                    724: Invoked by /etc/httpd/conf/srm.conf:
                    725: 
                    726:  <Location /adm/roles>
                    727:  PerlAccessHandler       Apache::lonacc
                    728:  SetHandler perl-script
                    729:  PerlHandler Apache::lonroles
                    730:  ErrorDocument     403 /adm/login
                    731:  ErrorDocument	  500 /adm/errorhandler
                    732:  </Location>
1.64      bowersj2  733: 
                    734: =head1 OVERVIEW
                    735: 
                    736: =head2 Choosing Roles
                    737: 
                    738: C<lonroles> is a handler that allows a user to switch roles in
                    739: mid-session. LON-CAPA attempts to work with "No Role Specified", the
                    740: default role that a user has before selecting a role, as widely as
                    741: possible, but certain handlers for example need specification which
                    742: course they should act on, etc. Both in this scenario, and when the
                    743: handler determines via C<lonnet>'s C<&allowed> function that a certain
                    744: action is not allowed, C<lonroles> is used as error handler. This
                    745: allows the user to select another role which may have permission to do
                    746: what they were trying to do. C<lonroles> can also be accessed via the
                    747: B<CRS> button in the Remote Control. 
                    748: 
                    749: =begin latex
                    750: 
                    751: \begin{figure}
                    752: \begin{center}
                    753: \includegraphics[width=0.45\paperwidth,keepaspectratio]{Sample_Roles_Screen}
                    754:   \caption{\label{Sample_Roles_Screen}Sample Roles Screen} 
                    755: \end{center}
                    756: \end{figure}
                    757: 
                    758: =end latex
                    759: 
                    760: =head2 Role Initialization
                    761: 
                    762: 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  763: 
                    764: =head1 INTRODUCTION
                    765: 
                    766: This module enables a user to select what role he wishes to
                    767: operate under (instructor, student, teaching assistant, course
                    768: coordinator, etc).  These roles are pre-established by the actions
                    769: of upper-level users.
                    770: 
                    771: This is part of the LearningOnline Network with CAPA project
                    772: described at http://www.lon-capa.org.
                    773: 
                    774: =head1 HANDLER SUBROUTINE
                    775: 
                    776: This routine is called by Apache and mod_perl.
                    777: 
                    778: =over 4
                    779: 
                    780: =item *
                    781: 
                    782: Roles Initialization (yes/no)
                    783: 
                    784: =item *
                    785: 
                    786: Get Error Message from Environment
                    787: 
                    788: =item *
                    789: 
                    790: Who is this?
                    791: 
                    792: =item *
                    793: 
                    794: Generate Page Output
                    795: 
                    796: =item *
                    797: 
                    798: Choice or no choice
                    799: 
                    800: =item *
                    801: 
                    802: Table
                    803: 
                    804: =item *
                    805: 
                    806: Privileges
                    807: 
                    808: =back
                    809: 
                    810: =cut

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