loncom/auth/lonroles.pm - diff

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Diff for /loncom/auth/lonroles.pm between versions 1.60 and 1.91

version 1.60, 2003/06/18 13:13:10	version 1.91, 2004/05/09 00:45:00
Line 25	Line 25
#	#
# http://www.lon-capa.org/	# http://www.lon-capa.org/
#	#
# (Directory Indexer
# (Login Screen
# YEAR=1999
# 5/21/99,5/22,5/25,5/26,5/31,6/2,6/10,7/12,7/14 Gerd Kortemeyer)
# 11/23 Gerd Kortemeyer)
# YEAR=2000
# 1/14,03/06,06/01,07/22,07/24,07/25,
# 09/04,09/06,09/28,09/29,09/30,10/2,10/5,10/26,10/28,
# 12/08,12/28,
# YEAR=2001
# 01/15/01 Gerd Kortemeyer
# 03/02,05/03,05/25,05/30,06/01,07/06,08/06 Gerd Kortemeyer
# 12/29 Gerd Kortemeyer
#
###	###

package Apache::lonroles;	package Apache::lonroles;
Line 51 use Apache::File();	Line 37 use Apache::File();
use Apache::lonmenu;	use Apache::lonmenu;
use Apache::loncommon;	use Apache::loncommon;
use Apache::lonannounce;	use Apache::lonannounce;
	use Apache::lonlocal;

	sub redirect_user {
	my ($r,$title,$url,$msg) = @_;
	$msg = $title if (! defined($msg));
	&Apache::loncommon::content_type($r,'text/html');
	&Apache::loncommon::no_cache($r);
	$r->send_http_header;
	my $swinfo=&Apache::lonmenu::rawconfig();
	my $bodytag=&Apache::loncommon::bodytag('Switching Role');
	$r->print (<<ENDREDIR);
	<head><title>$title</title>
	<meta HTTP-EQUIV="Refresh" CONTENT="1; url=$url">
	</head>
	<html>
	$bodytag
	<script>
	$swinfo
	</script>
	<h1>$msg</h1>
	</body>
	</html>
	ENDREDIR
	return;
	}

sub handler {	sub handler {

Line 98 sub handler {	Line 109 sub handler {
# check for keyed access	# check for keyed access
if (($role eq 'st') &&	if (($role eq 'st') &&
($ENV{'course.'.$cdom.'_'.$cnum.'.keyaccess'} eq 'yes')) {	($ENV{'course.'.$cdom.'_'.$cnum.'.keyaccess'} eq 'yes')) {
unless (&Apache::lonnet::validate_access_key(	# who is key authority?
	my $authdom=$cdom;
	my $authnum=$cnum;
	if ($ENV{'course.'.$cdom.'_'.$cnum.'.keyauth'}) {
	($authnum,$authdom)=
	split(/\W/,$ENV{'course.'.$cdom.'_'.$cnum.'.keyauth'});
	}
	# check with key authority
	unless (&Apache::lonnet::validate_access_key(
$ENV{'environment.key.'.$cdom.'_'.$cnum},	$ENV{'environment.key.'.$cdom.'_'.$cnum},
$cdom,$cnum)) {	$authdom,$authnum)) {
# there is no valid key	# there is no valid key
if ($ENV{'form.newkey'}) {	if ($ENV{'form.newkey'}) {
# student attempts to register a new key	# student attempts to register a new key
	&Apache::loncommon::content_type($r,'text/html');
	&Apache::loncommon::no_cache($r);
	$r->send_http_header;
	my $swinfo=&Apache::lonmenu::rawconfig();
	my $bodytag=&Apache::loncommon::bodytag
	('Verifying Access Key to Unlock this Course');
	my $buttontext=&mt('Enter Course');
	my $message=&mt('Successfully registered key');
	my $assignresult=
	&Apache::lonnet::assign_access_key(
	$ENV{'form.newkey'},
	$authdom,$authnum,
	$cdom,$cnum,
	$ENV{'user.domain'},
	$ENV{'user.name'},
	'Assigned from '.$ENV{'REMOTE_ADDR'}.' at '.localtime().' for '.
	$trolecode);
	unless ($assignresult eq 'ok') {
	$assignresult=~s/^error\:\s*//;
	$message=&mt($assignresult).
	'<br /><a href="/adm/logout">'.
	&mt('Logout').'</a>';
	$buttontext=&mt('Re-Enter Key');
	}
	$r->print(<<ENDENTEREDKEY);
	<head><title>Verifying Course Access Key</title>
	</head>
	<html>
	$bodytag
	<script>
	$swinfo
	</script>
	<form method="post">
	<input type="hidden" name="selectrole" value="1" />
	<input type="hidden" name="$trolecode" value="1" />
	<font size="+2">$message</font><br />
	<input type="submit" value="$buttontext" />
	</form>
	</body></html>
	ENDENTEREDKEY
	return OK;
} else {	} else {
# print form to enter a new key	# print form to enter a new key
$r->content_type('text/html');	&Apache::loncommon::content_type($r,'text/html');
&Apache::loncommon::no_cache($r);	&Apache::loncommon::no_cache($r);
$r->send_http_header;	$r->send_http_header;
my $swinfo=&Apache::lonmenu::rawconfig();	my $swinfo=&Apache::lonmenu::rawconfig();
Line 121 $bodytag	Line 181 $bodytag
$swinfo	$swinfo
</script>	</script>
<form method="post">	<form method="post">
<input type="hidden" name="selectrole" value="$ENV{'form.selectrole'}" />	<input type="hidden" name="selectrole" value="1" />
	<input type="hidden" name="$trolecode" value="1" />
<input type="text" size="20" name="newkey" value="$ENV{'form.newkey'}" />	<input type="text" size="20" name="newkey" value="$ENV{'form.newkey'}" />
<input type="submit" value="Enter key" />	<input type="submit" value="Enter key" />
</form>	</form>
Line 131 ENDENTERKEY	Line 192 ENDENTERKEY
}	}
}	}
}	}
	&Apache::lonnet::log($ENV{'user.domain'},
	$ENV{'user.name'},
	$ENV{'user.home'},
	"Role ".$trolecode);
my $tadv=0;	my $tadv=0;
if (($trolecode!~/^st/) &&	if (($trolecode!~/^st/) &&
($trolecode!~/^ta/) &&	($trolecode!~/^ta/) &&
Line 140 ENDENTERKEY	Line 205 ENDENTERKEY
'request.role.adv' => $tadv,	'request.role.adv' => $tadv,
'request.role.domain' => $cdom,	'request.role.domain' => $cdom,
'request.course.sec' => $csec);	'request.course.sec' => $csec);
my $msg='Entering course ...';	my $msg=&mt('Entering course ...');

if (($cnum) && ($role ne 'ca')) {	if (($cnum) && ($role ne 'ca')) {
my ($furl,$ferr)=	my ($furl,$ferr)=
&Apache::lonuserstate::readmap($cdom.'/'.$cnum);	&Apache::lonuserstate::readmap($cdom.'/'.$cnum);
if (($ENV{'form.orgurl'}) &&	if (($ENV{'form.orgurl'}) &&
($ENV{'form.orgurl'}!~/^\/adm\/flip/)) {	($ENV{'form.orgurl'}!~/^\/adm\/flip/)) {
$r->internal_redirect($ENV{'form.orgurl'});	my $dest=$ENV{'form.orgurl'};
	if ( &Apache::lonnet::mod_perl_version() == 2 ) {
	&Apache::lonnet::cleanenv();
	}
	$r->internal_redirect($dest);
return OK;	return OK;
} else {	} else {
unless ($ENV{'request.course.id'}) {	unless ($ENV{'request.course.id'}) {
&Apache::lonnet::appenv(	&Apache::lonnet::appenv(
"request.course.id" => $cdom.'_'.$cnum);	"request.course.id" => $cdom.'_'.$cnum);
$furl='/adm/roles';	$furl='/adm/roles?tryagain=1';
$msg=	$msg=
'<h1><font color=red>Could not initialize course at this time.</font></h1><h3>Please try again.</h3>';	'<h1><font color=red>'.
	&mt('Could not initialize course at this time.').
	'</font></h1><h3>'.&mt('Please try again.').'</h3>'.$ferr;
}	}

# Check to see if the user is a CC entering a course	# Check to see if the user is a CC entering a course
Line 168 ENDENTERKEY	Line 240 ENDENTERKEY
'.course.helper.not.run'}) {	'.course.helper.not.run'}) {
$furl = "/adm/helper/course.initialization.helper";	$furl = "/adm/helper/course.initialization.helper";
}	}
	#
$r->content_type('text/html');	# Send the user to the course they selected
&Apache::loncommon::no_cache($r);	&redirect_user($r,&mt('Entering Course'),
$r->send_http_header;	$furl,$msg);
my $swinfo=&Apache::lonmenu::rawconfig();
my $bodytag=&Apache::loncommon::bodytag('Switching Role');
print (<<ENDREDIR);
<head><title>Entering Course</title>
<meta HTTP-EQUIV="Refresh" CONTENT="1; url=$furl">
</head>
<html>
$bodytag
<script>
$swinfo
</script>
<h1>$msg</h1>
</body>
</html>
ENDREDIR
return OK;	return OK;
}	}
}	}
	#
	# Send the user to the construction space they selected
	if ($role =~ /^(au\|ca)$/) {
	my $redirect_url = '/priv/';
	if ($role eq 'au') {
	$redirect_url.=$ENV{'user.name'};
	} else {
	$where =~ /\/(.*)$/;
	$redirect_url .= $1;
	}
	$redirect_url .= '/';
	&redirect_user($r,&mt('Entering Construction Space'),
	$redirect_url);
	return OK;
	}
}	}
}	}
}	}
Line 198 ENDREDIR	Line 270 ENDREDIR

# =============================================================== No Roles Init	# =============================================================== No Roles Init

$r->content_type('text/html');	&Apache::loncommon::content_type($r,'text/html');
&Apache::loncommon::no_cache($r);	&Apache::loncommon::no_cache($r);
$r->send_http_header;	$r->send_http_header;
return OK if $r->header_only;	return OK if $r->header_only;

my $swinfo=&Apache::lonmenu::rawconfig();	my $swinfo=&Apache::lonmenu::rawconfig();
my $bodytag=&Apache::loncommon::bodytag('User Roles');	my $bodytag=&Apache::loncommon::bodytag('User Roles');
my $helptag=&Apache::loncommon::help_open_topic	my $helptag='<table><tr><td>'.&Apache::loncommon::help_open_topic
("General_Intro","Click here for help");	("General_Intro",&mt("Click here for help")).'</td><td>'.
	&Apache::loncommon::help_open_faq(1,&mt('Click here for FAQ')).'</td><td>'.
	&Apache::loncommon::help_open_bug('',&mt('Click here to report bugs')).'</td></tr></table>';
$r->print(<<ENDHEADER);	$r->print(<<ENDHEADER);
<html>	<html>
<head>	<head>
Line 228 ENDHEADER	Line 302 ENDHEADER
"$msg for $ENV{'user.name'} domain $ENV{'user.domain'} access $priv",$fn);	"$msg for $ENV{'user.name'} domain $ENV{'user.domain'} access $priv",$fn);
}	}

# ---------------------------------------------------------------- Who is this?	# ------------------------------------------------- Can this user re-init, etc?

my $advanced=0;	my $advanced=$ENV{'user.adv'};
foreach $envkey (keys %ENV) {	&Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},['tryagain']);
if ($envkey=~/^user\.role\./) {	my $tryagain=$ENV{'form.tryagain'};
my (undef,undef,$role,@pwhere)=split(/\./,$envkey);
if ($role ne 'st') { $advanced=1; }
}
}

# -------------------------------------------------------- Generate Page Output	# -------------------------------------------------------- Generate Page Output
# --------------------------------------------------------------- Error Header?	# --------------------------------------------------------------- Error Header?
Line 249 ENDHEADER	Line 319 ENDHEADER
} else {	} else {
if ($ENV{'user.error.msg'}) {	if ($ENV{'user.error.msg'}) {
$r->print(	$r->print(
'<h3><font color=red>You need to choose another user role or '.	'<h3><font color=red>'.
'enter a specific course for this function</font></h3>');	&mt('You need to choose another user role or enter a specific course for this function').'</font></h3>');
}	}
}	}
# -------------------------------------------------------- Choice or no choice?	# -------------------------------------------------------- Choice or no choice?
if ($nochoose) {	if ($nochoose) {
if ($advanced) {	if ($advanced) {
$r->print("<h2>Assigned User Roles</h2>\n");	$r->print("<h2>".&mt('Assigned User Roles')."</h2>\n");
} else {	} else {
$r->print("<h2>Sorry ...</h2>\nThis resource might be part of");	$r->print("<h2>".&mt('Sorry ...')."</h2>\n".
	&mt('This resource might be part of'));
if ($ENV{'request.course.id'}) {	if ($ENV{'request.course.id'}) {
$r->print(' another');	$r->print(&mt(' another'));
} else {	} else {
$r->print(' a certain');	$r->print(&mt(' a certain'));
}	}
$r->print(' course.</body></html>');	$r->print(&mt(' course.').'</body></html>');
return OK;	return OK;
}	}
} else {	} else {
if ($advanced) {	if ($advanced) {
$r->print("Your home server is ".	$r->print(&mt("Your home server is ").
$Apache::lonnet::hostname{&Apache::lonnet::homeserver	$Apache::lonnet::hostname{&Apache::lonnet::homeserver
($ENV{'user.name'},$ENV{'user.domain'})}.	($ENV{'user.name'},$ENV{'user.domain'})}.
"<br />\n");	"<br />\n");
$r->print("Author and Co-Author roles may not be available on ".	$r->print(&mt(
"servers other than your home server.");	"Author and Co-Author roles may not be available on servers other than your home server."));
} else {
$r->print("<h2>Select a Course to Enter</h2>\n");
}	}
if (($ENV{'REDIRECT_QUERY_STRING'}) && ($fn)) {	if (($ENV{'REDIRECT_QUERY_STRING'}) && ($fn)) {
$fn.='?'.$ENV{'REDIRECT_QUERY_STRING'};	$fn.='?'.$ENV{'REDIRECT_QUERY_STRING'};
}	}
$r->print('<form method=post action="'.(($fn)?$fn:$r->uri).'">');	$r->print('<form method="post" name="rolechoice" action="'.(($fn)?$fn:$r->uri).'">');
$r->print('<input type=hidden name=orgurl value="'.$fn.'">');	$r->print('<input type=hidden name=orgurl value="'.$fn.'">');
$r->print('<input type=hidden name=selectrole value=1>');	$r->print('<input type=hidden name=selectrole value=1>');
}	}
$r->print('<br>Show all roles: <input type=checkbox name=showall');	if ($ENV{'user.adv'}) {
if ($ENV{'form.showall'}) { $r->print(' checked'); }	$r->print(
$r->print('><input type=submit value="Display"><br>');	'<br />'.&mt('Show all roles').': <input type="checkbox" name="showall"');
# ----------------------------------------------------------------------- Table	if ($ENV{'form.showall'}) { $r->print(' checked'); }
$r->print('<table><tr>');	$r->print('><input type=submit value="'.&mt('Display').'">');
unless ($nochoose) { $r->print('<th> </th>'); }	}
$r->print('<th>User Role</th><th colspan=2>Extent</th>'.
'<th>Start</th><th>End</th><th>Remark</th></tr>'."\n");

	my (%roletext,%sortrole,%roleclass);
	my $countactive=0;
	my $inrole=0;
	my $possiblerole='';
foreach $envkey (sort keys %ENV) {	foreach $envkey (sort keys %ENV) {
my $button = 1;	my $button = 1;
my $switchserver='';	my $switchserver='';
	my $roletext;
	my $sortkey;
if ($envkey=~/^user\.role\./) {	if ($envkey=~/^user\.role\./) {
my (undef,undef,$role,@pwhere)=split(/\./,$envkey);	my (undef,undef,$role,@pwhere)=split(/\./,$envkey);
next if (!defined($role) \|\| $role eq '');	next if (!defined($role) \|\| $role eq '');
Line 313 ENDHEADER	Line 386 ENDHEADER
$tstatus='future';	$tstatus='future';
if ($tstart<$now) { $tstatus='will'; }	if ($tstart<$now) { $tstatus='will'; }
}	}
$tpstart=localtime($tstart);	$tpstart=&Apache::lonlocal::locallocaltime($tstart);
}	}
if ($tend) {	if ($tend) {
if ($tend<$then) {	if ($tend<$then) {
Line 321 ENDHEADER	Line 394 ENDHEADER
} elsif ($tend<$now) {	} elsif ($tend<$now) {
$tstatus='will_not';	$tstatus='will_not';
}	}
$tpend=localtime($tend);	$tpend=&Apache::lonlocal::locallocaltime($tend);
}	}
if ($ENV{'request.role'} eq $trolecode) {	if ($ENV{'request.role'} eq $trolecode) {
$tstatus='selected';	$tstatus='selected';
Line 332 ENDHEADER	Line 405 ENDHEADER
if ($tstatus eq 'is') {	if ($tstatus eq 'is') {
$tbg='#77FF77';	$tbg='#77FF77';
$tfont='#003300';	$tfont='#003300';
	$possiblerole=$trolecode;
	$countactive++;
} elsif ($tstatus eq 'future') {	} elsif ($tstatus eq 'future') {
$tbg='#FFFF77';	$tbg='#FFFF77';
$button=0;	$button=0;
} elsif ($tstatus eq 'will') {	} elsif ($tstatus eq 'will') {
$tbg='#FFAA77';	$tbg='#FFAA77';
$tremark.='Active at next login. ';	$tremark.=&mt('Active at next login. ');
} elsif ($tstatus eq 'expired') {	} elsif ($tstatus eq 'expired') {
$tbg='#FF7777';	$tbg='#FF7777';
$tfont='#330000';	$tfont='#330000';
$button=0;	$button=0;
} elsif ($tstatus eq 'will_not') {	} elsif ($tstatus eq 'will_not') {
$tbg='#AAFF77';	$tbg='#AAFF77';
$tremark.='Expired after logout. ';	$tremark.=&mt('Expired after logout. ');
} elsif ($tstatus eq 'selected') {	} elsif ($tstatus eq 'selected') {
$tbg='#11CC55';	$tbg='#11CC55';
$tfont='#002200';	$tfont='#002200';
$tremark.='Currently selected. ';	$inrole=1;
	$countactive++;
	$tremark.=&mt('Currently selected. ');
}	}
my $trole;	my $trole;
if ($role =~ /^cr\//) {	if ($role =~ /^cr\//) {
my ($rdummy,$rdomain,$rauthor,$rrole)=split(/\//,$role);	my ($rdummy,$rdomain,$rauthor,$rrole)=split(/\//,$role);
$tremark.='<br>Defined by '.$rauthor.' at '.$rdomain.'.';	$tremark.='<br>'.&mt('Defined by ').$rauthor.
	&mt(' at ').$rdomain.'.';
$trole=$rrole;	$trole=$rrole;
} else {	} else {
$trole=Apache::lonnet::plaintext($role);	$trole=Apache::lonnet::plaintext($role);
Line 365 ENDHEADER	Line 443 ENDHEADER
# First, Co-Authorship roles	# First, Co-Authorship roles
if ($role eq 'ca') {	if ($role eq 'ca') {
my $home = &Apache::lonnet::homeserver($trest,$tdom);	my $home = &Apache::lonnet::homeserver($trest,$tdom);
if ($home ne $r->dir_config('lonHostID')) {	my $allowed=0;
	my @ids=&Apache::lonnet::current_machine_ids();
	foreach my $id (@ids) { if ($id eq $home) { $allowed=1; } }
	if (!$allowed) {
$button=0;	$button=0;
$switchserver=&Apache::lonnet::escape('http://'.	$switchserver=&Apache::lonnet::escape('http://'.
$Apache::lonnet::hostname{$home}.	$Apache::lonnet::hostname{$home}.
Line 376 ENDHEADER	Line 457 ENDHEADER
#next if ($home eq 'no_host');	#next if ($home eq 'no_host');
$home = $Apache::lonnet::hostname{$home};	$home = $Apache::lonnet::hostname{$home};
$ttype='Construction Space';	$ttype='Construction Space';
$twhere='User: '.$trest.'<br />Domain: '.$tdom.'<br />'.	$twhere=&mt('User').': '.$trest.'<br />'.&mt('Domain').
' Server: '.$home;	': '.$tdom.'<br />'.
	' '.&mt('Server').': '.$home;
$ENV{'course.'.$tdom.'_'.$trest.'.description'}='ca';	$ENV{'course.'.$tdom.'_'.$trest.'.description'}='ca';
	$tremark.=&Apache::lonhtmlcommon::authorbombs('/res/'.$tdom.'/'.$trest.'/');
	$sortkey=$role."$trest:$tdom";
} elsif ($role eq 'au') {	} elsif ($role eq 'au') {
# Authors	# Authors
my $home = &Apache::lonnet::homeserver	my $home = &Apache::lonnet::homeserver
($ENV{'user.name'},$ENV{'user.domain'});	($ENV{'user.name'},$ENV{'user.domain'});
if ($home ne $r->dir_config('lonHostID')) {	my $allowed=0;
	my @ids=&Apache::lonnet::current_machine_ids();
	foreach my $id (@ids) { if ($id eq $home) { $allowed=1; } }
	if (!$allowed) {
$button=0;	$button=0;
$switchserver=&Apache::lonnet::escape('http://'.	$switchserver=&Apache::lonnet::escape('http://'.
$Apache::lonnet::hostname{$home}.	$Apache::lonnet::hostname{$home}.
Line 394 ENDHEADER	Line 481 ENDHEADER
#next if ($home eq 'no_host');	#next if ($home eq 'no_host');
$home = $Apache::lonnet::hostname{$home};	$home = $Apache::lonnet::hostname{$home};
$ttype='Construction Space';	$ttype='Construction Space';
$twhere='Domain: '.$tdom.'<br />Server: '.$home;	$twhere=&mt('Domain').': '.$tdom.'<br />'.&mt('Server').
	': '.$home;
$ENV{'course.'.$tdom.'_'.$trest.'.description'}='ca';	$ENV{'course.'.$tdom.'_'.$trest.'.description'}='ca';
	$tremark.=&Apache::lonhtmlcommon::authorbombs('/res/'.$tdom.'/'.$ENV{'user.name'}.'/');
	$sortkey=$role;
} elsif ($trest) {	} elsif ($trest) {
$ttype='Course';	$ttype='Course';
if ($tsection) {	if ($tsection) {
$ttype.='<br>Section/Group: '.$tsection;	$ttype.='<br>'.&mt('Section/Group').': '.$tsection;
}	}
my $tcourseid=$tdom.'_'.$trest;	my $tcourseid=$tdom.'_'.$trest;
if ($ENV{'course.'.$tcourseid.'.description'}) {	if ($ENV{'course.'.$tcourseid.'.description'}) {
$twhere=$ENV{'course.'.$tcourseid.'.description'};	$twhere=$ENV{'course.'.$tcourseid.'.description'};
unless ($twhere eq 'Currently not available') {	$sortkey=$role."\0".$tdom."\0".$twhere."\0".$envkey;
	unless ($twhere eq &mt('Currently not available')) {
$twhere.=' <font size="-2">'.	$twhere.=' <font size="-2">'.
&Apache::loncommon::syllabuswrapper('Syllabus',$trest,$tdom,$tfont).	&Apache::loncommon::syllabuswrapper(&mt('Syllabus'),$trest,$tdom,$tfont).
'</font>';	'</font>';
}	}
} else {	} else {
my %newhash=Apache::lonnet::coursedescription	my %newhash=Apache::lonnet::coursedescription
($tcourseid);	($tcourseid);
if (%newhash) {	if (%newhash) {
	$sortkey=$role."\0".$tdom."\0".$newhash{'description'}.
	"\0".$envkey;
$twhere=$newhash{'description'}.	$twhere=$newhash{'description'}.
' <font size="-2">'.	' <font size="-2">'.
&Apache::loncommon::syllabuswrapper('Syllabus',$trest,$tdom,$tfont).	&Apache::loncommon::syllabuswrapper(&mt('Syllabus'),$trest,$tdom,$tfont).
'</font>';	'</font>';
} else {	} else {
$twhere='Currently not available';	$twhere=&mt('Currently not available');
$ENV{'course.'.$tcourseid.'.description'}=$twhere;	$ENV{'course.'.$tcourseid.'.description'}=$twhere;
	$sortkey=$role."\0".$tdom."\0".$twhere."\0".$envkey;
}	}
}	}
if ($role ne 'st') { $twhere.="<br />Domain:".$tdom; }	if ($role ne 'st') { $twhere.="<br />".&mt('Domain').":".$tdom; }
} elsif ($tdom) {	} elsif ($tdom) {
$ttype='Domain';	$ttype='Domain';
$twhere=$tdom;	$twhere=$tdom;
	$sortkey=$role.$twhere;
} else {	} else {
$ttype='System';	$ttype='System';
$twhere='system wide';	$twhere=&mt('system wide');
	$sortkey=$role.$twhere;
}	}

$r->print('<tr bgcolor='.$tbg.'>');	$roletext.='<tr bgcolor='.$tbg.'>';
unless ($nochoose) {	unless ($nochoose) {
if (!$button) {	if (!$button) {
if ($switchserver) {	if ($switchserver) {
$r->print('<td><a href="/adm/logout?handover='.	$roletext.='<td><a href="/adm/logout?handover='.
$switchserver.'">Switch Server</a></td>');	$switchserver.'">'.&mt('Switch Server').'</a></td>';
} else {	} else {
$r->print('<td> </td>');	$roletext.=('<td> </td>');
}	}
} elsif ($tstatus eq 'is') {	} elsif ($tstatus eq 'is') {
$r->print('<td><input type=submit value=Select name="'.	$roletext.=('<td><input type=submit value="'.
	&mt('Select').'" name="'.
$trolecode.'"></td>');	$trolecode.'"></td>');
} elsif ($ENV{'user.adv'}) {	} elsif ($tryagain) {
$r->print	$roletext.=
('<td><input type=submit value="Re-Initialize"'.	'<td><input type=submit value="'.
' name="'.$trolecode.'"></td>');	&mt('Try Selecting Again').'" name="'.$trolecode.'"></td>';
	} elsif ($advanced) {
	$roletext.=
	'<td><input type=submit value="'.
	&mt('Re-Initialize').'" name="'.$trolecode.'"></td>';
} else {	} else {
$r->print('<td> </td>');	$roletext.='<td> </td>';
}	}
}	}
$tremark.=&Apache::lonannounce::showday(time,1,	$tremark.=&Apache::lonannounce::showday(time,1,
&Apache::lonannounce::readcalendar($tdom.'_'.$trest));	&Apache::lonannounce::readcalendar($tdom.'_'.$trest));

$r->print('<td><font color="'.$tfont.'">'.$trole.	$roletext.='<td><font color="'.$tfont.'">'.$trole.
'</font></td><td><font color="'.$tfont.'">'.$ttype.	'</font></td><td><font color="'.$tfont.'">'.$ttype.
'</font></td><td><font color="'.$tfont.'">'.$twhere.	'</font></td><td><font color="'.$tfont.'">'.$twhere.
'</font></td><td><font color="'.$tfont.'">'.$tpstart.	'</font></td><td><font color="'.$tfont.'">'.$tpstart.
'</font></td><td><font color="'.$tfont.'">'.$tpend.	'</font></td><td><font color="'.$tfont.'">'.$tpend.
'</font></td><td><font color="'.$tfont.'">'.$tremark.	'</font></td><td><font color="'.$tfont.'">'.$tremark.
' </font></td></tr>'."\n");	' </font></td></tr>'."\n";
	$roletext{$envkey}=$roletext;
	if (!$sortkey) {$sortkey=$twhere."\0".$envkey;}
	$sortrole{$sortkey}=$envkey;
	$roleclass{$envkey}=$ttype;
}	}
}	}
}	}
	# No active roles
	if ($countactive==0) {
	if ($inrole) {
	$r->print('<h2>'.&mt('Currently no additional roles or courses').'</h2>');
	} else {
	$r->print('<h2>'.&mt('Currently no active roles or courses').'</h2>');
	}
	$r->print('</form></body></html>');
	return OK;
	# Is there only one choice?
	} elsif (($countactive==1) && ($ENV{'request.role'} eq 'cm')) {
	$r->print('<h3>'.&mt('Please stand by.').'</h3>'.
	'<input type="hidden" name="'.$possiblerole.'" value="1" />');
	$r->print("</form>\n");
	$r->rflush();
	$r->print('<script>document.forms.rolechoice.submit();</script>');
	$r->print('</body></html>');
	return OK;
	}
	# More than one possible role
	# ----------------------------------------------------------------------- Table
	unless (($advanced) \|\| ($nochoose)) {
	$r->print("<h2>".&mt('Select a Course to Enter')."</h2>\n");
	}
	$r->print('<br /><table><tr>');
	unless ($nochoose) { $r->print('<th> </th>'); }
	$r->print('<th>'.&mt('User Role').'</th><th colspan=2>'.&mt('Extent').
	'</th><th>'.&mt('Start').'</th><th>'.&mt('End').'</th><th>'.
	&mt('Remark').'</th></tr>'."\n");
	my $doheaders=-1;
	foreach my $type ('Construction Space','Course','Domain','System') {
	my $haverole=0;
	foreach my $which (sort {uc($a) cmp uc($b)} (keys(%sortrole))) {
	if ($roleclass{$sortrole{$which}} =~ /^\Q$type\E/) {
	$haverole=1;
	}
	}
	if ($haverole) { $doheaders++; }
	}
	foreach my $type ('Construction Space','Course','Domain','System') {
	my $output;
	foreach my $which (sort {uc($a) cmp uc($b)} (keys(%sortrole))) {
	if ($roleclass{$sortrole{$which}} =~ /^\Q$type\E/) {
	$output.=&mt($roletext{$sortrole{$which}});
	}
	}
	if ($output) {
	if ($doheaders > 0) {
	$r->print("<tr bgcolor='#BBffBB'>".
	"<td align='center' colspan='7'>".&mt($type)."</td>");
	}
	$r->print($output);
	}
	}
my $tremark='';	my $tremark='';
my $tfont='#003300';	my $tfont='#003300';
if ($ENV{'request.role'} eq 'cm') {	if ($ENV{'request.role'} eq 'cm') {
$r->print('<tr bgcolor="#11CC55">');	$r->print('<tr bgcolor="#11CC55">');
$tremark='Currently selected.';	$tremark=&mt('Currently selected. ');
$tfont='#002200';	$tfont='#002200';
} else {	} else {
$r->print('<tr bgcolor="#77FF77">');	$r->print('<tr bgcolor="#77FF77">');
}	}
unless ($nochoose) {	unless ($nochoose) {
if ($ENV{'request.role'} ne 'cm') {	if ($ENV{'request.role'} ne 'cm') {
$r->print('<td><input type=submit value=Select name="cm"></td>');	$r->print('<td><input type=submit value="'.
	&mt('Select').'" name="cm"></td>');
} else {	} else {
$r->print('<td> </td>');	$r->print('<td> </td>');
}	}
}	}
$r->print('<td colspan=5><font color="'.$tfont.'">No role specified'.	$r->print('<td colspan=5><font color="'.$tfont.'">'.&mt('No role specified').
'</font></td><td><font color="'.$tfont.'">'.$tremark.	'</font></td><td><font color="'.$tfont.'">'.$tremark.
' </font></td></tr>'."\n");	' </font></td></tr>'."\n");

Line 542 ENDHEADER	Line 702 ENDHEADER
}	}
}	}
}	}
	$r->print(&Apache::lonnet::getannounce());
	if ($advanced) {
	$r->print('<p><small><i>This is LON-CAPA '.
	$r->dir_config('lonVersion').'</i><br />'.
	'<a href="/adm/logout">'.&mt('Logout').'</a></small></p>');
	}
$r->print("</body></html>\n");	$r->print("</body></html>\n");
return OK;	return OK;
}	}
Line 566 Invoked by /etc/httpd/conf/srm.conf:	Line 731 Invoked by /etc/httpd/conf/srm.conf:
ErrorDocument 500 /adm/errorhandler	ErrorDocument 500 /adm/errorhandler
</Location>	</Location>

	=head1 OVERVIEW

	=head2 Choosing Roles

	C<lonroles> is a handler that allows a user to switch roles in
	mid-session. LON-CAPA attempts to work with "No Role Specified", the
	default role that a user has before selecting a role, as widely as
	possible, but certain handlers for example need specification which
	course they should act on, etc. Both in this scenario, and when the
	handler determines via C<lonnet>'s C<&allowed> function that a certain
	action is not allowed, C<lonroles> is used as error handler. This
	allows the user to select another role which may have permission to do
	what they were trying to do. C<lonroles> can also be accessed via the
	B<CRS> button in the Remote Control.

	=begin latex

	\begin{figure}
	\begin{center}
	\includegraphics[width=0.45\paperwidth,keepaspectratio]{Sample_Roles_Screen}
	\caption{\label{Sample_Roles_Screen}Sample Roles Screen}
	\end{center}
	\end{figure}

	=end latex

	=head2 Role Initialization

	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.

=head1 INTRODUCTION	=head1 INTRODUCTION

This module enables a user to select what role he wishes to	This module enables a user to select what role he wishes to

FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>

Removed from v.1.60
changed lines
	Added in v.1.91