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version 1.918, 2007/10/03 19:57:26	version 1.996, 2009/05/06 12:13:26
Line 27	Line 27
#	#
###	###

	=pod

	=head1 NAME

	Apache::lonnet.pm

	=head1 SYNOPSIS

	This file is an interface to the lonc processes of
	the LON-CAPA network as well as set of elaborated functions for handling information
	necessary for navigating through a given cluster of LON-CAPA machines within a
	domain. There are over 40 specialized functions in this module which handle the
	reading and transmission of metadata, user information (ids, names, environments, roles,
	logs), file information (storage, reading, directories, extensions, replication, embedded
	styles and descriptors), educational resources (course descriptions, section names and
	numbers), url hashing (to assign roles on a url basis), and translating abbreviated symbols to
	and from more descriptive phrases or explanations.

	This is part of the LearningOnline Network with CAPA project
	described at http://www.lon-capa.org.

	=head1 Package Variables

	These are largely undocumented, so if you decipher one please note it here.

	=over 4

	=item $processmarker

	Contains the time this process was started and this servers host id.

	=item $dumpcount

	Counts the number of times a message log flush has been attempted (regardless
	of success) by this process. Used as part of the filename when messages are
	delayed.

	=back

	=cut

package Apache::lonnet;	package Apache::lonnet;

use strict;	use strict;
use LWP::UserAgent();	use LWP::UserAgent();
use HTTP::Date;	use HTTP::Date;
# use Date::Parse;	use Image::Magick;

use vars qw(%perlvar %spareid %pr %prp $memcache %packagetab $tmpdir	use vars qw(%perlvar %spareid %pr %prp $memcache %packagetab $tmpdir
$_64bit %env);	$_64bit %env %protocol);

my (%badServerCache, $memcache, %courselogs, %accesshash, %domainrolehash,	my (%badServerCache, $memcache, %courselogs, %accesshash, %domainrolehash,
%userrolehash, $processmarker, $dumpcount, %coursedombuf,	%userrolehash, $processmarker, $dumpcount, %coursedombuf,
%coursenumbuf, %coursehombuf, %coursedescrbuf, %courseinstcodebuf,	%coursenumbuf, %coursehombuf, %coursedescrbuf, %courseinstcodebuf,
%courseownerbuf, %coursetypebuf);	%courseownerbuf, %coursetypebuf,$locknum);

use IO::Socket;	use IO::Socket;
use GDBM_File;	use GDBM_File;
Line 56 use LONCAPA::Configuration;	Line 98 use LONCAPA::Configuration;
my $readit;	my $readit;
my $max_connection_retries = 10; # Or some such value.	my $max_connection_retries = 10; # Or some such value.

	my $upload_photo_form = 0; #Variable to check when user upload a photo 0=not 1=true

require Exporter;	require Exporter;

our @ISA = qw (Exporter);	our @ISA = qw (Exporter);
our @EXPORT = qw(%env);	our @EXPORT = qw(%env);

=pod

=head1 Package Variables

These are largely undocumented, so if you decipher one please note it here.

=over 4

=item $processmarker

Contains the time this process was started and this servers host id.

=item $dumpcount

Counts the number of times a message log flush has been attempted (regardless
of success) by this process. Used as part of the filename when messages are
delayed.

=back

=cut


# --------------------------------------------------------------------- Logging	# --------------------------------------------------------------------- Logging
{	{
my $logid;	my $logid;
sub instructor_log {	sub instructor_log {
my ($hash_name,$storehash,$delflag,$uname,$udom)=@_;	my ($hash_name,$storehash,$delflag,$uname,$udom,$cnum,$cdom)=@_;
	if (($cnum eq '') \|\| ($cdom eq '')) {
	$cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
	$cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
	}
$logid++;	$logid++;
my $id=time().'00000'.$$.'00000'.$logid;	my $now = time();
	my $id=$now.'00000'.$$.'00000'.$logid;
return &Apache::lonnet::put('nohist_'.$hash_name,	return &Apache::lonnet::put('nohist_'.$hash_name,
{ $id => {	{ $id => {
'exe_uname' => $env{'user.name'},	'exe_uname' => $env{'user.name'},
'exe_udom' => $env{'user.domain'},	'exe_udom' => $env{'user.domain'},
'exe_time' => time(),	'exe_time' => $now,
'exe_ip' => $ENV{'REMOTE_ADDR'},	'exe_ip' => $ENV{'REMOTE_ADDR'},
'delflag' => $delflag,	'delflag' => $delflag,
'logentry' => $storehash,	'logentry' => $storehash,
'uname' => $uname,	'uname' => $uname,
'udom' => $udom,	'udom' => $udom,
}	}
},	},$cdom,$cnum);
$env{'course.'.$env{'request.course.id'}.'.domain'},
$env{'course.'.$env{'request.course.id'}.'.num'}
);
}	}
}	}

Line 125 sub logthis {	Line 149 sub logthis {
my $now=time;	my $now=time;
my $local=localtime($now);	my $local=localtime($now);
if (open(my $fh,">>$execdir/logs/lonnet.log")) {	if (open(my $fh,">>$execdir/logs/lonnet.log")) {
print $fh "$local ($$): $message\n";	my $logstring = $local. " ($$): ".$message."\n"; # Keep any \'s in string.
	print $fh $logstring;
close($fh);	close($fh);
}	}
return 1;	return 1;
Line 156 sub create_connection {	Line 181 sub create_connection {
return 0;	return 0;
}	}

	sub get_server_timezone {
	my ($cnum,$cdom) = @_;
	my $home=&homeserver($cnum,$cdom);
	if ($home ne 'no_host') {
	my $cachetime = 24*3600;
	my ($timezone,$cached)=&is_cached_new('servertimezone',$home);
	if (defined($cached)) {
	return $timezone;
	} else {
	my $timezone = &reply('servertimezone',$home);
	return &do_cache_new('servertimezone',$home,$timezone,$cachetime);
	}
	}
	}

	sub get_server_loncaparev {
	my ($dom,$lonhost) = @_;
	if (defined($lonhost)) {
	if (!defined(&hostname($lonhost))) {
	undef($lonhost);
	}
	}
	if (!defined($lonhost)) {
	if (defined(&domain($dom,'primary'))) {
	$lonhost=&domain($dom,'primary');
	if ($lonhost eq 'no_host') {
	undef($lonhost);
	}
	}
	}
	if (defined($lonhost)) {
	my $cachetime = 24*3600;
	my ($loncaparev,$cached)=&is_cached_new('serverloncaparev',$lonhost);
	if (defined($cached)) {
	return $loncaparev;
	} else {
	my $loncaparev = &reply('serverloncaparev',$lonhost);
	return &do_cache_new('serverloncaparev',$lonhost,$loncaparev,$cachetime);
	}
	}
	}

# -------------------------------------------------- Non-critical communication	# -------------------------------------------------- Non-critical communication
sub subreply {	sub subreply {
Line 448 sub timed_flock {	Line 514 sub timed_flock {
# ---------------------------------------------------------- Append Environment	# ---------------------------------------------------------- Append Environment

sub appenv {	sub appenv {
my %newenv=@_;	my ($newenv,$roles) = @_;
foreach my $key (keys(%newenv)) {	if (ref($newenv) eq 'HASH') {
if (($newenv{$key}=~/^user\.role/) \|\| ($newenv{$key}=~/^user\.priv/)) {	foreach my $key (keys(%{$newenv})) {
&logthis("<font color=\"blue\">WARNING: ".	my $refused = 0;
"Attempt to modify environment ".$key." to ".$newenv{$key}	if (($key =~ /^user\.role/) \|\| ($key =~ /^user\.priv/)) {
.'</font>');	$refused = 1;
delete($newenv{$key});	if (ref($roles) eq 'ARRAY') {
} else {	my ($type,$role) = ($key =~ /^user\.(role\|priv)\.([^.]+)\./);
$env{$key}=$newenv{$key};	if (grep(/^\Q$role\E$/,@{$roles})) {
	$refused = 0;
	}
	}
	}
	if ($refused) {
	&logthis("<font color=\"blue\">WARNING: ".
	"Attempt to modify environment ".$key." to ".$newenv->{$key}
	.'</font>');
	delete($newenv->{$key});
	} else {
	$env{$key}=$newenv->{$key};
	}
	}
	my $opened = open(my $env_file,'+<',$env{'user.environment'});
	if ($opened
	&& &timed_flock($env_file,LOCK_EX)
	&&
	tie(my %disk_env,'GDBM_File',$env{'user.environment'},
	(&GDBM_WRITER()\|&GDBM_NOLOCK()),0640)) {
	while (my ($key,$value) = each(%{$newenv})) {
	$disk_env{$key} = $value;
	}
	untie(%disk_env);
}	}
}
my $opened = open(my $env_file,'+<',$env{'user.environment'});
if ($opened
&& &timed_flock($env_file,LOCK_EX)
&&
tie(my %disk_env,'GDBM_File',$env{'user.environment'},
(&GDBM_WRITER()\|&GDBM_NOLOCK()),0640)) {
while (my ($key,$value) = each(%newenv)) {
$disk_env{$key} = $value;
}
untie(%disk_env);
}	}
return 'ok';	return 'ok';
}	}
# ----------------------------------------------------- Delete from Environment	# ----------------------------------------------------- Delete from Environment

sub delenv {	sub delenv {
my $delthis=shift;	my ($delthis,$regexp) = @_;
if (($delthis=~/user\.role/) \|\| ($delthis=~/user\.priv/)) {	if (($delthis=~/user\.role/) \|\| ($delthis=~/user\.priv/)) {
&logthis("<font color=\"blue\">WARNING: ".	&logthis("<font color=\"blue\">WARNING: ".
"Attempt to delete from environment ".$delthis);	"Attempt to delete from environment ".$delthis);
Line 488 sub delenv {	Line 566 sub delenv {
tie(my %disk_env,'GDBM_File',$env{'user.environment'},	tie(my %disk_env,'GDBM_File',$env{'user.environment'},
(&GDBM_WRITER()\|&GDBM_NOLOCK()),0640)) {	(&GDBM_WRITER()\|&GDBM_NOLOCK()),0640)) {
foreach my $key (keys(%disk_env)) {	foreach my $key (keys(%disk_env)) {
if ($key=~/^$delthis/) {	if ($regexp) {
delete($env{$key});	if ($key=~/^$delthis/) {
delete($disk_env{$key});	delete($env{$key});
}	delete($disk_env{$key});
	}
	} else {
	if ($key=~/^\Q$delthis\E/) {
	delete($env{$key});
	delete($disk_env{$key});
	}
	}
}	}
untie(%disk_env);	untie(%disk_env);
}	}
Line 512 sub get_env_multiple {	Line 597 sub get_env_multiple {
return(@values);	return(@values);
}	}

	# ------------------------------------------------------------------- Locking

	sub set_lock {
	my ($text)=@_;
	$locknum++;
	my $id=$$.'-'.$locknum;
	&appenv({'session.locks' => $env{'session.locks'}.','.$id,
	'session.lock.'.$id => $text});
	return $id;
	}

	sub get_locks {
	my $num=0;
	my %texts=();
	foreach my $lock (split(/\,/,$env{'session.locks'})) {
	if ($lock=~/\w/) {
	$num++;
	$texts{$lock}=$env{'session.lock.'.$lock};
	}
	}
	return ($num,%texts);
	}

	sub remove_lock {
	my ($id)=@_;
	my $newlocks='';
	foreach my $lock (split(/\,/,$env{'session.locks'})) {
	if (($lock=~/\w/) && ($lock ne $id)) {
	$newlocks.=','.$lock;
	}
	}
	&appenv({'session.locks' => $newlocks});
	&delenv('session.lock.'.$id);
	}

	sub remove_all_locks {
	my $activelocks=$env{'session.locks'};
	foreach my $lock (split(/\,/,$env{'session.locks'})) {
	if ($lock=~/\w/) {
	&remove_lock($lock);
	}
	}
	}


# ------------------------------------------ Find out current server userload	# ------------------------------------------ Find out current server userload
# there is a copy in lond
sub userload {	sub userload {
my $numusers=0;	my $numusers=0;
{	{
Line 521 sub userload {	Line 650 sub userload {
my $filename;	my $filename;
my $curtime=time;	my $curtime=time;
while ($filename=readdir(LONIDS)) {	while ($filename=readdir(LONIDS)) {
if ($filename eq '.' \|\| $filename eq '..') {next;}	next if ($filename eq '.' \|\| $filename eq '..');
	next if ($filename =~ /publicuser_\d+\.id/);
my ($mtime)=(stat($perlvar{'lonIDsDir'}.'/'.$filename))[9];	my ($mtime)=(stat($perlvar{'lonIDsDir'}.'/'.$filename))[9];
if ($curtime-$mtime < 1800) { $numusers++; }	if ($curtime-$mtime < 1800) { $numusers++; }
}	}
Line 584 sub spareserver {	Line 714 sub spareserver {
}	}

if (!$want_server_name) {	if (!$want_server_name) {
$spare_server="http://".&hostname($spare_server);	my $protocol = 'http';
	if ($protocol{$spare_server} eq 'https') {
	$protocol = $protocol{$spare_server};
	}
	$spare_server = $protocol.'://'.&hostname($spare_server);
}	}
return $spare_server;	return $spare_server;
}	}
Line 693 sub queryauthenticate {	Line 827 sub queryauthenticate {
# --------- Try to authenticate user from domain's lib servers (first this one)	# --------- Try to authenticate user from domain's lib servers (first this one)

sub authenticate {	sub authenticate {
my ($uname,$upass,$udom)=@_;	my ($uname,$upass,$udom,$checkdefauth)=@_;
$upass=&escape($upass);	$upass=&escape($upass);
$uname= &LONCAPA::clean_username($uname);	$uname= &LONCAPA::clean_username($uname);
my $uhome=&homeserver($uname,$udom,1);	my $uhome=&homeserver($uname,$udom,1);
	my $newhome;
if ((!$uhome) \|\| ($uhome eq 'no_host')) {	if ((!$uhome) \|\| ($uhome eq 'no_host')) {
# Maybe the machine was offline and only re-appeared again recently?	# Maybe the machine was offline and only re-appeared again recently?
&reconlonc();	&reconlonc();
# One more	# One more
my $uhome=&homeserver($uname,$udom,1);	$uhome=&homeserver($uname,$udom,1);
	if (($uhome eq 'no_host') && $checkdefauth) {
	if (defined(&domain($udom,'primary'))) {
	$newhome=&domain($udom,'primary');
	}
	if ($newhome ne '') {
	$uhome = $newhome;
	}
	}
if ((!$uhome) \|\| ($uhome eq 'no_host')) {	if ((!$uhome) \|\| ($uhome eq 'no_host')) {
&logthis("User $uname at $udom is unknown in authenticate");	&logthis("User $uname at $udom is unknown in authenticate");
}	return 'no_host';
return 'no_host';	}
}	}
my $answer=reply("encrypt:auth:$udom:$uname:$upass",$uhome);	my $answer=reply("encrypt:auth:$udom:$uname:$upass:$checkdefauth",$uhome);
if ($answer eq 'authorized') {	if ($answer eq 'authorized') {
&logthis("User $uname at $udom authorized by $uhome");	if ($newhome) {
return $uhome;	&logthis("User $uname at $udom authorized by $uhome, but needs account");
	return 'no_account_on_host';
	} else {
	&logthis("User $uname at $udom authorized by $uhome");
	return $uhome;
	}
}	}
if ($answer eq 'non_authorized') {	if ($answer eq 'non_authorized') {
&logthis("User $uname at $udom rejected by $uhome");	&logthis("User $uname at $udom rejected by $uhome");
Line 882 sub put_dom {	Line 1030 sub put_dom {
sub retrieve_inst_usertypes {	sub retrieve_inst_usertypes {
my ($udom) = @_;	my ($udom) = @_;
my (%returnhash,@order);	my (%returnhash,@order);
if (defined(&domain($udom,'primary'))) {	my %domdefs = &Apache::lonnet::get_domain_defaults($udom);
my $uhome=&domain($udom,'primary');	if ((ref($domdefs{'inststatustypes'}) eq 'HASH') &&
my $rep=&reply("inst_usertypes:$udom",$uhome);	(ref($domdefs{'inststatusorder'}) eq 'ARRAY')) {
my ($hashitems,$orderitems) = split(/:/,$rep);	%returnhash = %{$domdefs{'inststatustypes'}};
my @pairs=split(/\&/,$hashitems);	@order = @{$domdefs{'inststatusorder'}};
foreach my $item (@pairs) {
my ($key,$value)=split(/=/,$item,2);
$key = &unescape($key);
next if ($key =~ /^error: 2 /);
$returnhash{$key}=&thaw_unescape($value);
}
my @esc_order = split(/\&/,$orderitems);
foreach my $item (@esc_order) {
push(@order,&unescape($item));
}
} else {	} else {
&logthis("get_dom failed - no primary domain server for $udom");	if (defined(&domain($udom,'primary'))) {
	my $uhome=&domain($udom,'primary');
	my $rep=&reply("inst_usertypes:$udom",$uhome);
	if ($rep =~ /^(con_lost\|error\|no_such_host\|refused)/) {
	&logthis("get_dom failed - $rep returned from $uhome in domain: $udom");
	return (\%returnhash,\@order);
	}
	my ($hashitems,$orderitems) = split(/:/,$rep);
	my @pairs=split(/\&/,$hashitems);
	foreach my $item (@pairs) {
	my ($key,$value)=split(/=/,$item,2);
	$key = &unescape($key);
	next if ($key =~ /^error: 2 /);
	$returnhash{$key}=&thaw_unescape($value);
	}
	my @esc_order = split(/\&/,$orderitems);
	foreach my $item (@esc_order) {
	push(@order,&unescape($item));
	}
	} else {
	&logthis("get_dom failed - no primary domain server for $udom");
	}
}	}
return (\%returnhash,\@order);	return (\%returnhash,\@order);
}	}
Line 1047 sub get_instuser {	Line 1206 sub get_instuser {
}	}

sub inst_rulecheck {	sub inst_rulecheck {
my ($udom,$uname,$rules) = @_;	my ($udom,$uname,$id,$item,$rules) = @_;
my %returnhash;	my %returnhash;
if ($udom ne '') {	if ($udom ne '') {
if (ref($rules) eq 'ARRAY') {	if (ref($rules) eq 'ARRAY') {
Line 1055 sub inst_rulecheck {	Line 1214 sub inst_rulecheck {
my $rulestr = join(':',@{$rules});	my $rulestr = join(':',@{$rules});
my $homeserver=&domain($udom,'primary');	my $homeserver=&domain($udom,'primary');
if (($homeserver ne '') && ($homeserver ne 'no_host')) {	if (($homeserver ne '') && ($homeserver ne 'no_host')) {
my $response=&unescape(&reply('instrulecheck:'.&escape($udom).':'.	my $response;
&escape($uname).':'.$rulestr,	if ($item eq 'username') {
	$response=&unescape(&reply('instrulecheck:'.&escape($udom).
	':'.&escape($uname).':'.$rulestr,
$homeserver));	$homeserver));
	} elsif ($item eq 'id') {
	$response=&unescape(&reply('instidrulecheck:'.&escape($udom).
	':'.&escape($id).':'.$rulestr,
	$homeserver));
	} elsif ($item eq 'selfcreate') {
	$response=&unescape(&reply('instselfcreatecheck:'.
	&escape($udom).':'.&escape($uname).
	':'.$rulestr,$homeserver));
	}
if ($response ne 'refused') {	if ($response ne 'refused') {
my @pairs=split(/\&/,$response);	my @pairs=split(/\&/,$response);
foreach my $item (@pairs) {	foreach my $item (@pairs) {
Line 1074 sub inst_rulecheck {	Line 1244 sub inst_rulecheck {
}	}

sub inst_userrules {	sub inst_userrules {
my ($udom) = @_;	my ($udom,$check) = @_;
my (%ruleshash,@ruleorder);	my (%ruleshash,@ruleorder);
if ($udom ne '') {	if ($udom ne '') {
my $homeserver=&domain($udom,'primary');	my $homeserver=&domain($udom,'primary');
if (($homeserver ne '') && ($homeserver ne 'no_host')) {	if (($homeserver ne '') && ($homeserver ne 'no_host')) {
my $response=&reply('instuserrules:'.&escape($udom),	my $response;
	if ($check eq 'id') {
	$response=&reply('instidrules:'.&escape($udom),
	$homeserver);
	} elsif ($check eq 'email') {
	$response=&reply('instemailrules:'.&escape($udom),
	$homeserver);
	} else {
	$response=&reply('instuserrules:'.&escape($udom),
$homeserver);	$homeserver);
	}
if (($response ne 'refused') && ($response ne 'error') &&	if (($response ne 'refused') && ($response ne 'error') &&
	($response ne 'unknown_cmd') &&
($response ne 'no_such_host')) {	($response ne 'no_such_host')) {
my ($hashitems,$orderitems) = split(/:/,$response);	my ($hashitems,$orderitems) = split(/:/,$response);
my @pairs=split(/\&/,$hashitems);	my @pairs=split(/\&/,$hashitems);
Line 1101 sub inst_userrules {	Line 1281 sub inst_userrules {
return (\%ruleshash,\@ruleorder);	return (\%ruleshash,\@ruleorder);
}	}

	# ------------- Get Authentication, Language and User Tools Defaults for Domain

	sub get_domain_defaults {
	my ($domain) = @_;
	my $cachetime = 606024;
	my ($result,$cached)=&is_cached_new('domdefaults',$domain);
	if (defined($cached)) {
	if (ref($result) eq 'HASH') {
	return %{$result};
	}
	}
	my %domdefaults;
	my %domconfig =
	&Apache::lonnet::get_dom('configuration',['defaults','quotas',
	'requestcourses','inststatus'],$domain);
	if (ref($domconfig{'defaults'}) eq 'HASH') {
	$domdefaults{'lang_def'} = $domconfig{'defaults'}{'lang_def'};
	$domdefaults{'auth_def'} = $domconfig{'defaults'}{'auth_def'};
	$domdefaults{'auth_arg_def'} = $domconfig{'defaults'}{'auth_arg_def'};
	$domdefaults{'timezone_def'} = $domconfig{'defaults'}{'timezone_def'};
	$domdefaults{'datelocale_def'} = $domconfig{'defaults'}{'datelocale_def'};
	} else {
	$domdefaults{'lang_def'} = &domain($domain,'lang_def');
	$domdefaults{'auth_def'} = &domain($domain,'auth_def');
	$domdefaults{'auth_arg_def'} = &domain($domain,'auth_arg_def');
	}
	if (ref($domconfig{'quotas'}) eq 'HASH') {
	if (ref($domconfig{'quotas'}{'defaultquota'}) eq 'HASH') {
	$domdefaults{'defaultquota'} = $domconfig{'quotas'}{'defaultquota'};
	} else {
	$domdefaults{'defaultquota'} = $domconfig{'quotas'};
	}
	my @usertools = ('aboutme','blog','portfolio');
	foreach my $item (@usertools) {
	if (ref($domconfig{'quotas'}{$item}) eq 'HASH') {
	$domdefaults{$item} = $domconfig{'quotas'}{$item};
	}
	}
	}
	if (ref($domconfig{'requestcourses'}) eq 'HASH') {
	foreach my $item ('official','unofficial') {
	$domdefaults{$item} = $domconfig{'requestcourses'}{$item};
	}
	}
	if (ref($domconfig{'inststatus'}) eq 'HASH') {
	foreach my $item ('inststatustypes','inststatusorder') {
	$domdefaults{$item} = $domconfig{'inststatus'}{$item};
	}
	}
	&Apache::lonnet::do_cache_new('domdefaults',$domain,\%domdefaults,
	$cachetime);
	return %domdefaults;
	}

# --------------------------------------------------- Assign a key to a student	# --------------------------------------------------- Assign a key to a student

sub assign_access_key {	sub assign_access_key {
Line 1133 sub assign_access_key {	Line 1367 sub assign_access_key {
# key now belongs to user	# key now belongs to user
my $envkey='key.'.$cdom.'_'.$cnum;	my $envkey='key.'.$cdom.'_'.$cnum;
if (&put('environment',{$envkey => $ckey}) eq 'ok') {	if (&put('environment',{$envkey => $ckey}) eq 'ok') {
&appenv('environment.'.$envkey => $ckey);	&appenv({'environment.'.$envkey => $ckey});
return 'ok';	return 'ok';
} else {	} else {
return	return
Line 1383 sub do_cache_new {	Line 1617 sub do_cache_new {
$memcache->disconnect_all();	$memcache->disconnect_all();
}	}
# need to make a copy of $value	# need to make a copy of $value
#&make_room($id,$value,$debug);	&make_room($id,$value,$debug);
return $value;	return $value;
}	}

sub make_room {	sub make_room {
my ($id,$value,$debug)=@_;	my ($id,$value,$debug)=@_;
$remembered{$id}=$value;
	$remembered{$id}= (ref($value)) ? &Storable::dclone($value)
	: $value;
if ($to_remember<0) { return; }	if ($to_remember<0) { return; }
$accessed{$id}=[&gettimeofday()];	$accessed{$id}=[&gettimeofday()];
if (scalar(keys(%remembered)) <= $to_remember) { return; }	if (scalar(keys(%remembered)) <= $to_remember) { return; }
Line 1418 sub purge_remembered {	Line 1654 sub purge_remembered {

sub userenvironment {	sub userenvironment {
my ($udom,$unam,@what)=@_;	my ($udom,$unam,@what)=@_;
	my $items;
	foreach my $item (@what) {
	$items.=&escape($item).'&';
	}
	$items=~s/\&$//;
my %returnhash=();	my %returnhash=();
my @answer=split(/\&/,	my @answer=split(/\&/,
&reply('get:'.$udom.':'.$unam.':environment:'.join('&',@what),	&reply('get:'.$udom.':'.$unam.':environment:'.$items,
&homeserver($unam,$udom)));	&homeserver($unam,$udom)));
my $i;	my $i;
for ($i=0;$i<=$#what;$i++) {	for ($i=0;$i<=$#what;$i++) {
Line 1615 sub ssi_body {	Line 1856 sub ssi_body {
if (! exists($form{'LONCAPA_INTERNAL_no_discussion'})) {	if (! exists($form{'LONCAPA_INTERNAL_no_discussion'})) {
$form{'LONCAPA_INTERNAL_no_discussion'}='true';	$form{'LONCAPA_INTERNAL_no_discussion'}='true';
}	}
my $output=($filelink=~/^http\:/?&externalssi($filelink):	my $output='';
&ssi($filelink,%form));	my $response;
	if ($filelink=~/^https?\:/) {
	($output,$response)=&externalssi($filelink);
	} else {
	($output,$response)=&ssi($filelink,%form);
	}
$output=~s\|//(\s<!--)? BEGIN LON-CAPA Internal.+?// END LON-CAPA Internal\s(-->)?\s\|\|gs;	$output=~s\|//(\s<!--)? BEGIN LON-CAPA Internal.+?// END LON-CAPA Internal\s(-->)?\s\|\|gs;
$output=~s/^.?\<body[^\>]\>//si;	$output=~s/^.?\<body[^\>]\>//si;
$output=~s/(.)\<\/body\s\>.*?$/$1/si;	$output=~s/\<\/body\s\>.?$//si;
return $output;	if (wantarray) {
	return ($output, $response);
	} else {
	return $output;
	}
}	}

# --------------------------------------------------------- Server Side Include	# --------------------------------------------------------- Server Side Include
Line 1634 sub absolute_url {	Line 1884 sub absolute_url {
return $protocol.$host_name;	return $protocol.$host_name;
}	}

	#
	# Server side include.
	# Parameters:
	# fn Possibly encrypted resource name/id.
	# form Hash that describes how the rendering should be done
	# and other things.
	# Returns:
	# Scalar context: The content of the response.
	# Array context: 2 element list of the content and the full response object.
	#
sub ssi {	sub ssi {

my ($fn,%form)=@_;	my ($fn,%form)=@_;

my $ua=new LWP::UserAgent;	my $ua=new LWP::UserAgent;

my $request;	my $request;

$form{'no_update_last_known'}=1;	$form{'no_update_last_known'}=1;
Line 1654 sub ssi {	Line 1912 sub ssi {
$request->header(Cookie => $ENV{'HTTP_COOKIE'});	$request->header(Cookie => $ENV{'HTTP_COOKIE'});
my $response=$ua->request($request);	my $response=$ua->request($request);

return $response->content;	if (wantarray) {
	return ($response->content, $response);
	} else {
	return $response->content;
	}
}	}

sub externalssi {	sub externalssi {
Line 1662 sub externalssi {	Line 1924 sub externalssi {
my $ua=new LWP::UserAgent;	my $ua=new LWP::UserAgent;
my $request=new HTTP::Request('GET',$url);	my $request=new HTTP::Request('GET',$url);
my $response=$ua->request($request);	my $response=$ua->request($request);
return $response->content;	if (wantarray) {
	return ($response->content, $response);
	} else {
	return $response->content;
	}
}	}

# -------------------------------- Allow a /uploaded/ URI to be vouched for	# -------------------------------- Allow a /uploaded/ URI to be vouched for
Line 1675 sub allowuploaded {	Line 1941 sub allowuploaded {
my %httpref=();	my %httpref=();
my $httpurl=&hreflocation('',$url);	my $httpurl=&hreflocation('',$url);
$httpref{'httpref.'.$httpurl}=$srcurl;	$httpref{'httpref.'.$httpurl}=$srcurl;
&Apache::lonnet::appenv(%httpref);	&Apache::lonnet::appenv(\%httpref);
}	}

# --------- File operations in /home/httpd/html/userfiles/$domain/1/2/3/$course	# --------- File operations in /home/httpd/html/userfiles/$domain/1/2/3/$course
Line 1736 sub process_coursefile {	Line 2002 sub process_coursefile {
print $fh $env{'form.'.$source};	print $fh $env{'form.'.$source};
close($fh);	close($fh);
if ($parser eq 'parse') {	if ($parser eq 'parse') {
my $parse_result = &extract_embedded_items($filepath,$fname,$allfiles,$codebase);	my $parse_result = &extract_embedded_items($filepath.'/'.$fname,$allfiles,$codebase);
unless ($parse_result eq 'ok') {	unless ($parse_result eq 'ok') {
&logthis('Failed to parse '.$filepath.'/'.$fname.' for embedded media: '.$parse_result);	&logthis('Failed to parse '.$filepath.'/'.$fname.' for embedded media: '.$parse_result);
}	}
Line 1815 sub clean_filename {	Line 2081 sub clean_filename {
$fname=~s/\.(\d+)(?=\.)/_$1/g;	$fname=~s/\.(\d+)(?=\.)/_$1/g;
return $fname;	return $fname;
}	}
	#This Function check if a Image max 400px width and height 500px. If not then scale the image down
	sub resizeImage {
	my($img_url) = @_;
	my $ima = Image::Magick->new;
	$ima->Read($img_url);
	if($ima->Get('width') > 400)
	{
	my $factor = $ima->Get('width')/400;
	$ima->Scale( width=>400, height=>$ima->Get('height')/$factor );
	}
	if($ima->Get('height') > 500)
	{
	my $factor = $ima->Get('height')/500;
	$ima->Scale( width=>$ima->Get('width')/$factor, height=>500);
	}

	$ima->Write($img_url);
	}

	#Wrapper function for userphotoupload
	sub userphotoupload
	{
	my($formname,$subdir) = @_;
	$upload_photo_form = 1;
	return &userfileupload($formname,undef,$subdir);
	}

# --------------- Take an uploaded file and put it into the userfiles directory	# --------------- Take an uploaded file and put it into the userfiles directory
# input: $formname - the contents of the file are in $env{"form.$formname"}	# input: $formname - the contents of the file are in $env{"form.$formname"}
Line 1874 sub userfileupload {	Line 2166 sub userfileupload {
close($fh);	close($fh);
return $fullpath.'/'.$fname;	return $fullpath.'/'.$fname;
}	}
	if ($subdir eq 'scantron') {
	$fname = 'scantron_orig_'.$fname;
	} else {
# Create the directory if not present	# Create the directory if not present
$fname="$subdir/$fname";	$fname="$subdir/$fname";
	}
if ($coursedoc) {	if ($coursedoc) {
my $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};	my $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
my $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};	my $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
Line 1915 sub finishuserfileupload {	Line 2210 sub finishuserfileupload {
$thumbwidth,$thumbheight) = @_;	$thumbwidth,$thumbheight) = @_;
my $path=$docudom.'/'.$docuname.'/';	my $path=$docudom.'/'.$docuname.'/';
my $filepath=$perlvar{'lonDocRoot'};	my $filepath=$perlvar{'lonDocRoot'};

my ($fnamepath,$file,$fetchthumb);	my ($fnamepath,$file,$fetchthumb);
$file=$fname;	$file=$fname;
if ($fname=~m\|/\|) {	if ($fname=~m\|/\|) {
Line 1929 sub finishuserfileupload {	Line 2225 sub finishuserfileupload {
mkdir($filepath,0777);	mkdir($filepath,0777);
}	}
}	}

# Save the file	# Save the file
{	{
if (!open(FH,'>'.$filepath.'/'.$file)) {	if (!open(FH,'>'.$filepath.'/'.$file)) {
Line 1942 sub finishuserfileupload {	Line 2239 sub finishuserfileupload {
return '/adm/notfound.html';	return '/adm/notfound.html';
}	}
close(FH);	close(FH);
	if($upload_photo_form==1)
	{
	resizeImage($filepath.'/'.$file);
	$upload_photo_form = 0;
	}
}	}
if ($parser eq 'parse') {	if ($parser eq 'parse') {
my $parse_result = &extract_embedded_items($filepath,$file,$allfiles,	my $parse_result = &extract_embedded_items($filepath.'/'.$file,$allfiles,
$codebase);	$codebase);
unless ($parse_result eq 'ok') {	unless ($parse_result eq 'ok') {
&logthis('Failed to parse '.$filepath.$file.	&logthis('Failed to parse '.$filepath.$file.
Line 1963 sub finishuserfileupload {	Line 2265 sub finishuserfileupload {

# Notify homeserver to grep it	# Notify homeserver to grep it
#	#
my $docuhome=&homeserver($docuname,$docudom);	my $docuhome=&homeserver($docuname,$docudom);
my $fetchresult= &reply('fetchuserfile:'.$path.$file,$docuhome);	my $fetchresult= &reply('fetchuserfile:'.$path.$file,$docuhome);
if ($fetchresult eq 'ok') {	if ($fetchresult eq 'ok') {
if ($fetchthumb) {	if ($fetchthumb) {
Line 1984 sub finishuserfileupload {	Line 2286 sub finishuserfileupload {
}	}

sub extract_embedded_items {	sub extract_embedded_items {
my ($filepath,$file,$allfiles,$codebase,$content) = @_;	my ($fullpath,$allfiles,$codebase,$content) = @_;
my @state = ();	my @state = ();
my %javafiles = (	my %javafiles = (
codebase => '',	codebase => '',
Line 1999 sub extract_embedded_items {	Line 2301 sub extract_embedded_items {
if ($content) {	if ($content) {
$p = HTML::LCParser->new($content);	$p = HTML::LCParser->new($content);
} else {	} else {
$p = HTML::LCParser->new($filepath.'/'.$file);	$p = HTML::LCParser->new($fullpath);
}	}
while (my $t=$p->get_token()) {	while (my $t=$p->get_token()) {
if ($t->[0] eq 'S') {	if ($t->[0] eq 'S') {
Line 2095 sub add_filetype {	Line 2397 sub add_filetype {
}	}

sub removeuploadedurl {	sub removeuploadedurl {
my ($url)=@_;	my ($url)=@_;
my (undef,undef,$udom,$uname,$fname)=split('/',$url,5);	my (undef,undef,$udom,$uname,$fname)=split('/',$url,5);
return &removeuserfile($uname,$udom,$fname);	return &removeuserfile($uname,$udom,$fname);
}	}

sub removeuserfile {	sub removeuserfile {
my ($docuname,$docudom,$fname)=@_;	my ($docuname,$docudom,$fname)=@_;
my $home=&homeserver($docuname,$docudom);	my $home=&homeserver($docuname,$docudom);
my $result = &reply("removeuserfile:$docudom/$docuname/$fname",$home);	my $result = &reply("removeuserfile:$docudom/$docuname/$fname",$home);
if ($result eq 'ok') {	if ($result eq 'ok') {
if (($fname !~ /\.meta$/) && (&is_portfolio_file($fname))) {	if (($fname !~ /\.meta$/) && (&is_portfolio_file($fname))) {
my $metafile = $fname.'.meta';	my $metafile = $fname.'.meta';
my $metaresult = &removeuserfile($docuname,$docudom,$metafile);	my $metaresult = &removeuserfile($docuname,$docudom,$metafile);
my $url = "/uploaded/$docudom/$docuname/$fname";	my $url = "/uploaded/$docudom/$docuname/$fname";
my ($file,$group) = (&parse_portfolio_url($url))[3,4];	my ($file,$group) = (&parse_portfolio_url($url))[3,4];
my $sqlresult =	my $sqlresult =
&update_portfolio_table($docuname,$docudom,$file,	&update_portfolio_table($docuname,$docudom,$file,
'portfolio_metadata',$group,	'portfolio_metadata',$group,
Line 2170 sub flushcourselogs {	Line 2472 sub flushcourselogs {
# times and course titles for all courseids	# times and course titles for all courseids
#	#
my %courseidbuffer=();	my %courseidbuffer=();
foreach my $crsid (keys %courselogs) {	foreach my $crsid (keys(%courselogs)) {
if (&reply('log:'.$coursedombuf{$crsid}.':'.$coursenumbuf{$crsid}.':'.	if (&reply('log:'.$coursedombuf{$crsid}.':'.$coursenumbuf{$crsid}.':'.
&escape($courselogs{$crsid}),	&escape($courselogs{$crsid}),
$coursehombuf{$crsid}) eq 'ok') {	$coursehombuf{$crsid}) eq 'ok') {
Line 2183 sub flushcourselogs {	Line 2485 sub flushcourselogs {
delete $courselogs{$crsid};	delete $courselogs{$crsid};
}	}
}	}
$courseidbuffer{$coursehombuf{$crsid}}{$crsid} = (	$courseidbuffer{$coursehombuf{$crsid}}{$crsid} = {
'description' => &escape($coursedescrbuf{$crsid}),	'description' => $coursedescrbuf{$crsid},
'instcode' => &escape($courseinstcodebuf{$crsid}),	'inst_code' => $courseinstcodebuf{$crsid},
'type' => &escape($coursetypebuf{$crsid}),	'type' => $coursetypebuf{$crsid},
'owner' => &escape($courseownerbuf{$crsid}),	'owner' => $courseownerbuf{$crsid},
);	};
}	}
#	#
# Write course id database (reverse lookup) to homeserver of courses	# Write course id database (reverse lookup) to homeserver of courses
Line 2196 sub flushcourselogs {	Line 2498 sub flushcourselogs {
#	#
foreach my $crs_home (keys(%courseidbuffer)) {	foreach my $crs_home (keys(%courseidbuffer)) {
my $response = &courseidput(&host_domain($crs_home),	my $response = &courseidput(&host_domain($crs_home),
$courseidbuffer{$crs_home},$crs_home);	$courseidbuffer{$crs_home},
	$crs_home,'timeonly');
}	}
#	#
# File accesses	# File accesses
Line 2311 sub courseacclog {	Line 2614 sub courseacclog {
# FIXME: Probably ought to escape things....	# FIXME: Probably ought to escape things....
foreach my $key (keys(%env)) {	foreach my $key (keys(%env)) {
if ($key=~/^form\.(.*)/) {	if ($key=~/^form\.(.*)/) {
$what.=':'.$1.'='.$env{$key};	my $formitem = $1;
	if ($formitem =~ /^HWFILE(?:SIZE\|TOOBIG)/) {
	$what.=':'.$formitem.'='.$env{$key};
	} elsif ($formitem !~ /^HWFILE(?:[^.]+)$/) {
	$what.=':'.$formitem.'='.$env{$key};
	}
}	}
}	}
} elsif ($fnsymb =~ m:^/adm/searchcat:) {	} elsif ($fnsymb =~ m:^/adm/searchcat:) {
Line 2376 sub userrolelog {	Line 2684 sub userrolelog {
}	}
}	}

	sub courserolelog {
	my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$selfenroll,$context)=@_;
	if (($trole eq 'cc') \|\| ($trole eq 'in') \|\|
	($trole eq 'ep') \|\| ($trole eq 'ad') \|\|
	($trole eq 'ta') \|\| ($trole eq 'st') \|\|
	($trole=~/^cr/) \|\| ($trole eq 'gr')) {
	if ($area =~ m-^/($match_domain)/($match_courseid)/?([^/]*)-) {
	my $cdom = $1;
	my $cnum = $2;
	my $sec = $3;
	my $namespace = 'rolelog';
	my %storehash = (
	role => $trole,
	start => $tstart,
	end => $tend,
	selfenroll => $selfenroll,
	context => $context,
	);
	if ($trole eq 'gr') {
	$namespace = 'groupslog';
	$storehash{'group'} = $sec;
	} else {
	$storehash{'section'} = $sec;
	}
	&instructor_log($namespace,\%storehash,$delflag,$username,$domain,$cnum,$cdom);
	if (($trole ne 'st') \|\| ($sec ne '')) {
	&devalidate_cache_new('getcourseroles',$cdom.'_'.$cnum);
	}
	}
	}
	return;
	}

sub get_course_adv_roles {	sub get_course_adv_roles {
my $cid=shift;	my ($cid,$codes) = @_;
$cid=$env{'request.course.id'} unless (defined($cid));	$cid=$env{'request.course.id'} unless (defined($cid));
my %coursehash=&coursedescription($cid);	my %coursehash=&coursedescription($cid);
	my $crstype = &Apache::loncommon::course_type($cid);
my %nothide=();	my %nothide=();
foreach my $user (split(/\s\,\s/,$coursehash{'nothideprivileged'})) {	foreach my $user (split(/\s\,\s/,$coursehash{'nothideprivileged'})) {
$nothide{join(':',split(/[\@\:]/,$user))}=1;	if ($user !~ /:/) {
	$nothide{join(':',split(/[\@]/,$user))}=1;
	} else {
	$nothide{$user}=1;
	}
}	}
my %returnhash=();	my %returnhash=();
my %dumphash=	my %dumphash=
Line 2398 sub get_course_adv_roles {	Line 2744 sub get_course_adv_roles {
if ((&privileged($username,$domain)) &&	if ((&privileged($username,$domain)) &&
(!$nothide{$username.':'.$domain})) { next; }	(!$nothide{$username.':'.$domain})) { next; }
if ($role eq 'cr') { next; }	if ($role eq 'cr') { next; }
my $key=&plaintext($role);	if ($codes) {
if ($section) { $key.=' (Sec/Grp '.$section.')'; }	if ($section) { $role .= ':'.$section; }
if ($returnhash{$key}) {	if ($returnhash{$role}) {
$returnhash{$key}.=','.$username.':'.$domain;	$returnhash{$role}.=','.$username.':'.$domain;
	} else {
	$returnhash{$role}=$username.':'.$domain;
	}
} else {	} else {
$returnhash{$key}=$username.':'.$domain;	my $key=&plaintext($role,$crstype);
	if ($section) { $key.=' ('.&Apache::lonlocal::mt('Section [_1]',$section).')'; }
	if ($returnhash{$key}) {
	$returnhash{$key}.=','.$username.':'.$domain;
	} else {
	$returnhash{$key}=$username.':'.$domain;
	}
}	}
}	}
return %returnhash;	return %returnhash;
}	}

sub get_my_roles {	sub get_my_roles {
my ($uname,$udom,$context,$types,$roles,$roledoms)=@_;	my ($uname,$udom,$context,$types,$roles,$roledoms,$withsec,$hidepriv)=@_;
unless (defined($uname)) { $uname=$env{'user.name'}; }	unless (defined($uname)) { $uname=$env{'user.name'}; }
unless (defined($udom)) { $udom=$env{'user.domain'}; }	unless (defined($udom)) { $udom=$env{'user.domain'}; }
my %dumphash;	my (%dumphash,%nothide);
if ($context eq 'userroles') {	if ($context eq 'userroles') {
%dumphash = &dump('roles',$udom,$uname);	%dumphash = &dump('roles',$udom,$uname);
} else {	} else {
%dumphash=	%dumphash=
&dump('nohist_userroles',$udom,$uname);	&dump('nohist_userroles',$udom,$uname);
	if ($hidepriv) {
	my %coursehash=&coursedescription($udom.'_'.$uname);
	foreach my $user (split(/\s\,\s/,$coursehash{'nothideprivileged'})) {
	if ($user !~ /:/) {
	$nothide{join(':',split(/[\@]/,$user))} = 1;
	} else {
	$nothide{$user} = 1;
	}
	}
	}
}	}
my %returnhash=();	my %returnhash=();
my $now=time;	my $now=time;
Line 2431 sub get_my_roles {	Line 2796 sub get_my_roles {
}	}
if (($tstart) && ($tstart<0)) { next; }	if (($tstart) && ($tstart<0)) { next; }
my $status = 'active';	my $status = 'active';
if (($tend) && ($tend<$now)) {	if (($tend) && ($tend<=$now)) {
$status = 'previous';	$status = 'previous';
}	}
if (($tstart) && ($now<$tstart)) {	if (($tstart) && ($now<$tstart)) {
Line 2460 sub get_my_roles {	Line 2825 sub get_my_roles {
}	}
if (ref($roles) eq 'ARRAY') {	if (ref($roles) eq 'ARRAY') {
if (!grep(/^\Q$role\E$/,@{$roles})) {	if (!grep(/^\Q$role\E$/,@{$roles})) {
	if ($role =~ /^cr\//) {
	if (!grep(/^cr$/,@{$roles})) {
	next;
	}
	} else {
	next;
	}
	}
	}
	if ($hidepriv) {
	if ((&privileged($username,$domain)) &&
	(!$nothide{$username.':'.$domain})) {
next;	next;
}	}
}	}
$returnhash{$username.':'.$domain.':'.$role}=$tstart.':'.$tend;	if ($withsec) {
	$returnhash{$username.':'.$domain.':'.$role.':'.$section} =
	$tstart.':'.$tend;
	} else {
	$returnhash{$username.':'.$domain.':'.$role}=$tstart.':'.$tend;
	}
}	}
return %returnhash;	return %returnhash;
}	}
Line 2502 sub getannounce {	Line 2884 sub getannounce {
#	#

sub courseidput {	sub courseidput {
my ($domain,$storehash,$coursehome)=@_;	my ($domain,$storehash,$coursehome,$caller) = @_;
my $items='';	my $outcome;
my $now = time;	if ($caller eq 'timeonly') {
foreach my $item (keys(%$storehash)) {	my $cids = '';
$storehash->{$item}{'lasttime'} = $now;	foreach my $item (keys(%$storehash)) {
$items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';	$cids.=&escape($item).'&';
	}
	$cids=~s/\&$//;
	$outcome = &reply('courseidputhash:'.$domain.':'.$caller.':'.$cids,
	$coursehome);
	} else {
	my $items = '';
	foreach my $item (keys(%$storehash)) {
	$items.= &escape($item).'='.
	&freeze_escape($$storehash{$item}).'&';
	}
	$items=~s/\&$//;
	$outcome = &reply('courseidputhash:'.$domain.':'.$caller.':'.$items,
	$coursehome);
}	}
$items=~s/\&$//;
my $outcome = &reply('courseidputhash:'.$domain.':'.$items,$coursehome);
if ($outcome eq 'unknown_cmd') {	if ($outcome eq 'unknown_cmd') {
my $what;	my $what;
foreach my $cid (keys(%$storehash)) {	foreach my $cid (keys(%$storehash)) {
$what .= &escape($cid).'=';	$what .= &escape($cid).'=';
foreach my $item ('description','instcode','owner','type') {	foreach my $item ('description','inst_code','owner','type') {
$what .= $storehash->{$item}.':';	$what .= &escape($storehash->{$cid}{$item}).':';
}	}
$what =~ s/\:$/&/;	$what =~ s/\:$/&/;
}	}
Line 2528 sub courseidput {	Line 2921 sub courseidput {
}	}

sub courseiddump {	sub courseiddump {
my ($domfilter,$descfilter,$sincefilter,$instcodefilter,$ownerfilter,$coursefilter,$hostidflag,$hostidref,$typefilter,$regexp_ok)=@_;	my ($domfilter,$descfilter,$sincefilter,$instcodefilter,$ownerfilter,
	$coursefilter,$hostidflag,$hostidref,$typefilter,$regexp_ok,
	$selfenrollonly,$catfilter,$showhidden,$caller)=@_;
my $as_hash = 1;	my $as_hash = 1;
my %returnhash;	my %returnhash;
if (!$domfilter) { $domfilter=''; }	if (!$domfilter) { $domfilter=''; }
Line 2545 sub courseiddump {	Line 2940 sub courseiddump {
$sincefilter.':'.&escape($descfilter).':'.	$sincefilter.':'.&escape($descfilter).':'.
&escape($instcodefilter).':'.&escape($ownerfilter).	&escape($instcodefilter).':'.&escape($ownerfilter).
':'.&escape($coursefilter).':'.&escape($typefilter).	':'.&escape($coursefilter).':'.&escape($typefilter).
':'.&escape($regexp_ok).':'.$as_hash,$tryserver);	':'.&escape($regexp_ok).':'.$as_hash.':'.
	&escape($selfenrollonly).':'.&escape($catfilter).':'.
	$showhidden.':'.$caller,$tryserver);
my @pairs=split(/\&/,$rep);	my @pairs=split(/\&/,$rep);
foreach my $item (@pairs) {	foreach my $item (@pairs) {
my ($key,$value)=split(/\=/,$item,2);	my ($key,$value)=split(/\=/,$item,2);
Line 2555 sub courseiddump {	Line 2952 sub courseiddump {
if (ref($result) eq 'HASH') {	if (ref($result) eq 'HASH') {
$returnhash{$key}=$result;	$returnhash{$key}=$result;
} else {	} else {
my @responses = split(/:/,$result);	my @responses = split(/:/,$value);
my @items = ('description','instcode','owner','type');	my @items = ('description','inst_code','owner','type');
for (my $i=0; $i<@responses; $i++) {	for (my $i=0; $i<@responses; $i++) {
$returnhash{$key}{$items[$i]} = $responses[$i];	$returnhash{$key}{$items[$i]} = &unescape($responses[$i]);
}	}
}	}
}	}
Line 2606 sub get_domain_roles {	Line 3003 sub get_domain_roles {
if (undef($enddate) \|\| $enddate eq '') {	if (undef($enddate) \|\| $enddate eq '') {
$enddate = '.';	$enddate = '.';
}	}
my $rolelist = join(':',@{$roles});	my $rolelist;
	if (ref($roles) eq 'ARRAY') {
	$rolelist = join(':',@{$roles});
	}
my %personnel = ();	my %personnel = ();

my %servers = &get_servers($dom,'library');	my %servers = &get_servers($dom,'library');
Line 2632 sub get_first_access {	Line 3032 sub get_first_access {
my ($symb,$courseid,$udom,$uname)=&whichuser();	my ($symb,$courseid,$udom,$uname)=&whichuser();
if ($argsymb) { $symb=$argsymb; }	if ($argsymb) { $symb=$argsymb; }
my ($map,$id,$res)=&decode_symb($symb);	my ($map,$id,$res)=&decode_symb($symb);
if ($type eq 'map') {	if ($type eq 'course') {
	$res='course';
	} elsif ($type eq 'map') {
$res=&symbread($map);	$res=&symbread($map);
} else {	} else {
$res=$symb;	$res=$symb;
Line 2645 sub set_first_access {	Line 3047 sub set_first_access {
my ($type)=@_;	my ($type)=@_;
my ($symb,$courseid,$udom,$uname)=&whichuser();	my ($symb,$courseid,$udom,$uname)=&whichuser();
my ($map,$id,$res)=&decode_symb($symb);	my ($map,$id,$res)=&decode_symb($symb);
if ($type eq 'map') {	if ($type eq 'course') {
	$res='course';
	} elsif ($type eq 'map') {
$res=&symbread($map);	$res=&symbread($map);
} else {	} else {
$res=$symb;	$res=$symb;
Line 3275 sub coursedescription {	Line 3679 sub coursedescription {
}	}
}	}
if (!$args->{'one_time'}) {	if (!$args->{'one_time'}) {
&appenv(%envhash);	&appenv(\%envhash);
}	}
return %returnhash;	return %returnhash;
}	}
Line 3314 sub privileged {	Line 3718 sub privileged {

sub rolesinit {	sub rolesinit {
my ($domain,$username,$authhost)=@_;	my ($domain,$username,$authhost)=@_;
	my %userroles;
my $rolesdump=reply("dump:$domain:$username:roles",$authhost);	my $rolesdump=reply("dump:$domain:$username:roles",$authhost);
if (($rolesdump eq 'con_lost') \|\| ($rolesdump eq '')) { return ''; }	if (($rolesdump eq 'con_lost') \|\| ($rolesdump eq '')) { return \%userroles; }
my %allroles=();	my %allroles=();
my %allgroups=();	my %allgroups=();
my $now=time;	my $now=time;
my %userroles = ('user.login.time' => $now);	%userroles = ('user.login.time' => $now);
my $group_privs;	my $group_privs;

if ($rolesdump ne '') {	if ($rolesdump ne '') {
Line 3460 sub set_userprivs {	Line 3865 sub set_userprivs {
}	}
foreach my $role (keys(%{$allroles})) {	foreach my $role (keys(%{$allroles})) {
my %thesepriv;	my %thesepriv;
if (($role=~/^au/) \|\| ($role=~/^ca/)) { $author=1; }	if (($role=~/^au/) \|\| ($role=~/^ca/) \|\| ($role=~/^aa/)) { $author=1; }
foreach my $item (split(/:/,$$allroles{$role})) {	foreach my $item (split(/:/,$$allroles{$role})) {
if ($item ne '') {	if ($item ne '') {
my ($privilege,$restrictions)=split(/&/,$item);	my ($privilege,$restrictions)=split(/&/,$item);
Line 3481 sub set_userprivs {	Line 3886 sub set_userprivs {
return ($author,$adv);	return ($author,$adv);
}	}

	sub role_status {
	my ($rolekey,$then,$now,$role,$where,$trolecode,$tstatus,$tstart,$tend) = @_;
	my @pwhere = ();
	if (exists($env{$rolekey}) && $env{$rolekey} ne '') {
	(undef,undef,$$role,@pwhere)=split(/\./,$rolekey);
	unless (!defined($$role) \|\| $$role eq '') {
	$$where=join('.',@pwhere);
	$$trolecode=$$role.'.'.$$where;
	($$tstart,$$tend)=split(/\./,$env{$rolekey});
	$$tstatus='is';
	if ($$tstart && $$tstart>$then) {
	$$tstatus='future';
	if ($$tstart<$now) { $$tstatus='will'; }
	}
	if ($$tend) {
	if ($$tend<$then) {
	$$tstatus='expired';
	} elsif ($$tend<$now) {
	$$tstatus='will_not';
	}
	}
	}
	}
	}

	sub check_adhoc_privs {
	my ($cdom,$cnum,$then,$now,$checkrole) = @_;
	my $cckey = 'user.role.'.$checkrole.'./'.$cdom.'/'.$cnum;
	if ($env{$cckey}) {
	my ($role,$where,$trolecode,$tstart,$tend,$tremark,$tstatus,$tpstart,$tpend);
	&role_status($cckey,$then,$now,\$role,\$where,\$trolecode,\$tstatus,\$tstart,\$tend);
	unless (($tstatus eq 'is') \|\| ($tstatus eq 'will_not')) {
	&set_adhoc_privileges($cdom,$cnum,$checkrole);
	}
	} else {
	&set_adhoc_privileges($cdom,$cnum,$checkrole);
	}
	}

	sub set_adhoc_privileges {
	# role can be cc or ca
	my ($dcdom,$pickedcourse,$role) = @_;
	my $area = '/'.$dcdom.'/'.$pickedcourse;
	my $spec = $role.'.'.$area;
	my %userroles = &set_arearole($role,$area,'','',$env{'user.domain'},
	$env{'user.name'});
	my %ccrole = ();
	&standard_roleprivs(\%ccrole,$role,$dcdom,$spec,$pickedcourse,$area);
	my ($author,$adv)= &set_userprivs(\%userroles,\%ccrole);
	&appenv(\%userroles,[$role,'cm']);
	&log($env{'user.domain'},$env{'user.name'},$env{'user.home'},"Role ".$role);
	&appenv( {'request.role' => $spec,
	'request.role.domain' => $dcdom,
	'request.course.sec' => ''
	}
	);
	my $tadv=0;
	if (&allowed('adv') eq 'F') { $tadv=1; }
	&appenv({'request.role.adv' => $tadv});
	}

# --------------------------------------------------------------- get interface	# --------------------------------------------------------------- get interface

sub get {	sub get {
Line 3516 sub del {	Line 3982 sub del {
foreach my $item (@$storearr) {	foreach my $item (@$storearr) {
$items.=&escape($item).'&';	$items.=&escape($item).'&';
}	}

$items=~s/\&$//;	$items=~s/\&$//;
if (!$udomain) { $udomain=$env{'user.domain'}; }	if (!$udomain) { $udomain=$env{'user.domain'}; }
if (!$uname) { $uname=$env{'user.name'}; }	if (!$uname) { $uname=$env{'user.name'}; }
my $uhome=&homeserver($uname,$udomain);	my $uhome=&homeserver($uname,$udomain);

return &reply("del:$udomain:$uname:$namespace:$items",$uhome);	return &reply("del:$udomain:$uname:$namespace:$items",$uhome);
}	}

Line 3824 sub tmpget {	Line 4290 sub tmpget {
my %returnhash;	my %returnhash;
foreach my $item (split(/\&/,$rep)) {	foreach my $item (split(/\&/,$rep)) {
my ($key,$value)=split(/=/,$item);	my ($key,$value)=split(/=/,$item);
	next if ($key =~ /^error: 2 /);
$returnhash{&unescape($key)}=&thaw_unescape($value);	$returnhash{&unescape($key)}=&thaw_unescape($value);
}	}
return %returnhash;	return %returnhash;
Line 4079 sub is_portfolio_file {	Line 4546 sub is_portfolio_file {
return;	return;
}	}

	sub usertools_access {
	my ($uname,$udom,$tool,$action,$context) = @_;
	my ($access,%tools);
	if ($context eq '') {
	$context = 'tools';
	}
	if ($context eq 'requestcourses') {
	%tools = (
	official => 1,
	unofficial => 1,
	);
	} else {
	%tools = (
	aboutme => 1,
	blog => 1,
	portfolio => 1,
	);
	}
	return if (!defined($tools{$tool}));

	if ((!defined($udom)) \|\| (!defined($uname))) {
	$udom = $env{'user.domain'};
	$uname = $env{'user.name'};
	}

	if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
	if ($action ne 'reload') {
	if ($context eq 'requestcourses') {
	return $env{'environment.canrequest.'.$tool};
	} else {
	return $env{'environment.availabletools.'.$tool};
	}
	}
	}

	my ($toolstatus,$inststatus);

	if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'}) &&
	($action ne 'reload')) {
	$toolstatus = $env{'environment.'.$context.'.'.$tool};
	$inststatus = $env{'environment.inststatus'};
	} else {
	my %userenv = &userenvironment($udom,$uname,$context.'.'.$tool);
	$toolstatus = $userenv{$context.'.'.$tool};
	$inststatus = $userenv{'inststatus'};
	}

	if ($toolstatus ne '') {
	if ($toolstatus) {
	$access = 1;
	} else {
	$access = 0;
	}
	return $access;
	}

	my $is_adv = &is_advanced_user($udom,$uname);
	my %domdef = &get_domain_defaults($udom);
	if (ref($domdef{$tool}) eq 'HASH') {
	if ($is_adv) {
	if ($domdef{$tool}{'_LC_adv'} ne '') {
	if ($domdef{$tool}{'_LC_adv'}) {
	$access = 1;
	} else {
	$access = 0;
	}
	return $access;
	}
	}
	if ($inststatus ne '') {
	my ($hasaccess,$hasnoaccess);
	foreach my $affiliation (split(/:/,$inststatus)) {
	if ($domdef{$tool}{$affiliation} ne '') {
	if ($domdef{$tool}{$affiliation}) {
	$hasaccess = 1;
	} else {
	$hasnoaccess = 1;
	}
	}
	}
	if ($hasaccess \|\| $hasnoaccess) {
	if ($hasaccess) {
	$access = 1;
	} elsif ($hasnoaccess) {
	$access = 0;
	}
	return $access;
	}
	} else {
	if ($domdef{$tool}{'default'} ne '') {
	if ($domdef{$tool}{'default'}) {
	$access = 1;
	} elsif ($domdef{$tool}{'default'} == 0) {
	$access = 0;
	}
	return $access;
	}
	}
	} else {
	if ($context eq 'tools') {
	$access = 1;
	} else {
	$access = 0;
	}
	return $access;
	}
	}

	sub is_advanced_user {
	my ($udom,$uname) = @_;
	my %roleshash = &get_my_roles($uname,$udom,'userroles',undef,undef,undef,1);
	my %allroles;
	my $is_adv;
	foreach my $role (keys(%roleshash)) {
	my ($trest,$tdomain,$trole,$sec) = split(/:/,$role);
	my $area = '/'.$tdomain.'/'.$trest;
	if ($sec ne '') {
	$area .= '/'.$sec;
	}
	if (($area ne '') && ($trole ne '')) {
	my $spec=$trole.'.'.$area;
	if ($trole =~ /^cr\//) {
	&custom_roleprivs(\%allroles,$trole,$tdomain,$trest,$spec,$area);
	} elsif ($trole ne 'gr') {
	&standard_roleprivs(\%allroles,$trole,$tdomain,$spec,$trest,$area);
	}
	}
	}
	foreach my $role (keys(%allroles)) {
	last if ($is_adv);
	foreach my $item (split(/:/,$allroles{$role})) {
	if ($item ne '') {
	my ($privilege,$restrictions)=split(/&/,$item);
	if ($privilege eq 'adv') {
	$is_adv = 1;
	last;
	}
	}
	}
	}
	return $is_adv;
	}

# ---------------------------------------------- Custom access rule evaluation	# ---------------------------------------------- Custom access rule evaluation

Line 4291 sub allowed {	Line 4900 sub allowed {
}	}

# Full access at system, domain or course-wide level? Exit.	# Full access at system, domain or course-wide level? Exit.

if ($thisallowed=~/F/) {	if ($thisallowed=~/F/) {
return 'F';	return 'F';
}	}
Line 4644 sub log_query {	Line 5252 sub log_query {

sub update_portfolio_table {	sub update_portfolio_table {
my ($uname,$udom,$file_name,$query,$group,$action) = @_;	my ($uname,$udom,$file_name,$query,$group,$action) = @_;
	if ($group ne '') {
	$file_name =~s /^\Q$group\E//;
	}
my $homeserver = &homeserver($uname,$udom);	my $homeserver = &homeserver($uname,$udom);
my $queryid=	my $queryid=
&reply("querysend:".$query.':'.&escape($uname.':'.$udom.':'.$group).	&reply("querysend:".$query.':'.&escape($uname.':'.$udom.':'.$group).
Line 4801 sub auto_run {	Line 5412 sub auto_run {
$response = 1;	$response = 1;
}	}
} else {	} else {
my $homeserver = &homeserver($cnum,$cdom);	my $homeserver;
$response = &reply('autorun:'.$cdom,$homeserver);	if (&is_course($cdom,$cnum)) {
	$homeserver = &homeserver($cnum,$cdom);
	} else {
	$homeserver = &domain($cdom,'primary');
	}
	if ($homeserver ne 'no_host') {
	$response = &reply('autorun:'.$cdom,$homeserver);
	}
}	}
return $response;	return $response;
}	}
Line 5063 sub toggle_coursegroup_status {	Line 5681 sub toggle_coursegroup_status {
}	}

sub modify_group_roles {	sub modify_group_roles {
my ($cdom,$cnum,$group_id,$user,$end,$start,$userprivs) = @_;	my ($cdom,$cnum,$group_id,$user,$end,$start,$userprivs,$selfenroll,$context) = @_;
my $url = '/'.$cdom.'/'.$cnum.'/'.$group_id;	my $url = '/'.$cdom.'/'.$cnum.'/'.$group_id;
my $role = 'gr/'.&escape($userprivs);	my $role = 'gr/'.&escape($userprivs);
my ($uname,$udom) = split(/:/,$user);	my ($uname,$udom) = split(/:/,$user);
my $result = &assignrole($udom,$uname,$url,$role,$end,$start);	my $result = &assignrole($udom,$uname,$url,$role,$end,$start,'',$selfenroll,$context);
if ($result eq 'ok') {	if ($result eq 'ok') {
&devalidate_getgroups_cache($udom,$uname,$cdom,$cnum);	&devalidate_getgroups_cache($udom,$uname,$cdom,$cnum);
}	}
Line 5156 sub devalidate_getgroups_cache {	Line 5774 sub devalidate_getgroups_cache {
# ------------------------------------------------------------------ Plain Text	# ------------------------------------------------------------------ Plain Text

sub plaintext {	sub plaintext {
my ($short,$type,$cid) = @_;	my ($short,$type,$cid,$forcedefault) = @_;
if ($short =~ /^cr/) {	if ($short =~ /^cr/) {
return (split('/',$short))[-1];	return (split('/',$short))[-1];
}	}
if (!defined($cid)) {	if (!defined($cid)) {
$cid = $env{'request.course.id'};	$cid = $env{'request.course.id'};
}	}
if (defined($cid) && defined($env{'course.'.$cid.'.'.$short.'.plaintext'})) {	if (defined($cid) && ($env{'course.'.$cid.'.'.$short.'.plaintext'} ne '')) {
return &Apache::lonlocal::mt($env{'course.'.$cid.'.'.$short.	unless ($forcedefault) {
'.plaintext'});	my $roletext = $env{'course.'.$cid.'.'.$short.'.plaintext'};
	&Apache::lonlocal::mt_escape(\$roletext);
	return &Apache::lonlocal::mt($roletext);
	}
}	}
my %rolenames = (	my %rolenames = (
Course => 'std',	Course => 'std',
Line 5183 sub plaintext {	Line 5804 sub plaintext {
# ----------------------------------------------------------------- Assign Role	# ----------------------------------------------------------------- Assign Role

sub assignrole {	sub assignrole {
my ($udom,$uname,$url,$role,$end,$start,$deleteflag)=@_;	my ($udom,$uname,$url,$role,$end,$start,$deleteflag,$selfenroll,
	$context)=@_;
my $mrole;	my $mrole;
if ($role =~ /^cr\//) {	if ($role =~ /^cr\//) {
my $cwosec=$url;	my $cwosec=$url;
Line 5208 sub assignrole {	Line 5830 sub assignrole {
} else {	} else {
my $cwosec=$url;	my $cwosec=$url;
$cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;	$cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
unless ((&allowed('c'.$role,$cwosec)) \|\| &allowed('c'.$role,$udom)) {	if (!(&allowed('c'.$role,$cwosec)) && !(&allowed('c'.$role,$udom))) {
&logthis('Refused assignrole: '.	my $refused;
$udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.' by '.	if (($env{'request.course.sec'} ne '') && ($role eq 'st')) {
$env{'user.name'}.' at '.$env{'user.domain'});	if (!(&allowed('c'.$role,$url))) {
return 'refused';	$refused = 1;
	}
	} else {
	$refused = 1;
	}
	if ($refused) {
	if (($selfenroll == 1) && ($role eq 'st') && ($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
	$refused = '';
	} else {
	&logthis('Refused assignrole: '.$udom.' '.$uname.' '.$url.
	' '.$role.' '.$end.' '.$start.' by '.
	$env{'user.name'}.' at '.$env{'user.domain'});
	return 'refused';
	}
	}
}	}
$mrole=$role;	$mrole=$role;
}	}
Line 5228 sub assignrole {	Line 5864 sub assignrole {
}	}
my $origstart = $start;	my $origstart = $start;
my $origend = $end;	my $origend = $end;
	my $delflag;
# actually delete	# actually delete
if ($deleteflag) {	if ($deleteflag) {
if ((&allowed('dro',$udom)) \|\| (&allowed('dro',$url))) {	if ((&allowed('dro',$udom)) \|\| (&allowed('dro',$url))) {
Line 5238 sub assignrole {	Line 5875 sub assignrole {
# set start and finish to negative values for userrolelog	# set start and finish to negative values for userrolelog
$start=-1;	$start=-1;
$end=-1;	$end=-1;
	$delflag = 1;
}	}
}	}
# send command	# send command
Line 5246 sub assignrole {	Line 5884 sub assignrole {
if ($answer eq 'ok') {	if ($answer eq 'ok') {
&userrolelog($role,$uname,$udom,$url,$start,$end);	&userrolelog($role,$uname,$udom,$url,$start,$end);
# for course roles, perform group memberships changes triggered by role change.	# for course roles, perform group memberships changes triggered by role change.
	&courserolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,$selfenroll,$context);
unless ($role =~ /^gr/) {	unless ($role =~ /^gr/) {
&Apache::longroup::group_changes($udom,$uname,$url,$role,$origend,	&Apache::longroup::group_changes($udom,$uname,$url,$role,$origend,
$origstart);	$origstart,$selfenroll,$context);
}	}
}	}
return $answer;	return $answer;
Line 5286 sub modifyuser {	Line 5925 sub modifyuser {
my ($udom, $uname, $uid,	my ($udom, $uname, $uid,
$umode, $upass, $first,	$umode, $upass, $first,
$middle, $last, $gene,	$middle, $last, $gene,
$forceid, $desiredhome, $email)=@_;	$forceid, $desiredhome, $email, $inststatus)=@_;
$udom= &LONCAPA::clean_domain($udom);	$udom= &LONCAPA::clean_domain($udom);
$uname=&LONCAPA::clean_username($uname);	$uname=&LONCAPA::clean_username($uname);
&logthis('Call to modify user '.$udom.', '.$uname.', '.$uid.', '.	&logthis('Call to modify user '.$udom.', '.$uname.', '.$uid.', '.
Line 5347 sub modifyuser {	Line 5986 sub modifyuser {
# -------------------------------------------------------------- Add names, etc	# -------------------------------------------------------------- Add names, etc
my @tmp=&get('environment',	my @tmp=&get('environment',
['firstname','middlename','lastname','generation','id',	['firstname','middlename','lastname','generation','id',
'permanentemail'],	'permanentemail','inststatus'],
$udom,$uname);	$udom,$uname);
my %names;	my %names;
if ($tmp[0] =~ m/^error:.*/) {	if ($tmp[0] =~ m/^error:.*/) {
Line 5365 sub modifyuser {	Line 6004 sub modifyuser {
if (defined($gene)) { $names{'generation'} = $gene; }	if (defined($gene)) { $names{'generation'} = $gene; }
if ($email) {	if ($email) {
$email=~s/[^\w\@\.\-\,]//gs;	$email=~s/[^\w\@\.\-\,]//gs;
if ($email=~/\@/) { $names{'notification'} = $email;	if ($email=~/\@/) { $names{'permanentemail'} = $email; }
$names{'critnotification'} = $email;
$names{'permanentemail'} = $email; }
}	}
if ($uid) { $names{'id'} = $uid; }	if ($uid) { $names{'id'} = $uid; }
	if (defined($inststatus)) {
	$names{'inststatus'} = '';
	my ($usertypes,$typesorder) = &retrieve_inst_usertypes($udom);
	if (ref($usertypes) eq 'HASH') {
	my @okstatuses;
	foreach my $item (split(/:/,$inststatus)) {
	if (defined($usertypes->{$item})) {
	push(@okstatuses,$item);
	}
	}
	if (@okstatuses) {
	$names{'inststatus'} = join(':', map { &escape($_); } @okstatuses);
	}
	}
	}
my $reply = &put('environment', \%names, $udom,$uname);	my $reply = &put('environment', \%names, $udom,$uname);
if ($reply ne 'ok') { return 'error: '.$reply; }	if ($reply ne 'ok') { return 'error: '.$reply; }
my $sqlresult = &update_allusers_table($uname,$udom,\%names);	my $sqlresult = &update_allusers_table($uname,$udom,\%names);
&devalidate_cache_new('namescache',$uname.':'.$udom);	&devalidate_cache_new('namescache',$uname.':'.$udom);
&logthis('Success modifying user '.$udom.', '.$uname.', '.$uid.', '.	my $logmsg = 'Success modifying user '.$udom.', '.$uname.', '.$uid.', '.
$umode.', '.$first.', '.$middle.', '.	$umode.', '.$first.', '.$middle.', '.
$last.', '.$gene.' by '.	$last.', '.$gene.', '.$email.', '.$inststatus;
$env{'user.name'}.' at '.$env{'user.domain'});	if ($env{'user.name'} ne '' && $env{'user.domain'}) {
	$logmsg .= ' by '.$env{'user.name'}.' at '.$env{'user.domain'};
	} else {
	$logmsg .= ' during self creation';
	}
	&logthis($logmsg);
return 'ok';	return 'ok';
}	}

Line 5385 sub modifyuser {	Line 6042 sub modifyuser {

sub modifystudent {	sub modifystudent {
my ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$usec,	my ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$usec,
$end,$start,$forceid,$desiredhome,$email,$type,$locktype,$cid)=@_;	$end,$start,$forceid,$desiredhome,$email,$type,$locktype,$cid,
	$selfenroll,$context,$inststatus)=@_;
if (!$cid) {	if (!$cid) {
unless ($cid=$env{'request.course.id'}) {	unless ($cid=$env{'request.course.id'}) {
return 'not_in_class';	return 'not_in_class';
Line 5394 sub modifystudent {	Line 6052 sub modifystudent {
# --------------------------------------------------------------- Make the user	# --------------------------------------------------------------- Make the user
my $reply=&modifyuser	my $reply=&modifyuser
($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$forceid,	($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$forceid,
$desiredhome,$email);	$desiredhome,$email,$inststatus);
unless ($reply eq 'ok') { return $reply; }	unless ($reply eq 'ok') { return $reply; }
# This will cause &modify_student_enrollment to get the uid from the	# This will cause &modify_student_enrollment to get the uid from the
# students environment	# students environment
$uid = undef if (!$forceid);	$uid = undef if (!$forceid);
$reply = &modify_student_enrollment($udom,$uname,$uid,$first,$middle,$last,	$reply = &modify_student_enrollment($udom,$uname,$uid,$first,$middle,$last,
$gene,$usec,$end,$start,$type,$locktype,$cid);	$gene,$usec,$end,$start,$type,$locktype,$cid,$selfenroll,$context);
return $reply;	return $reply;
}	}

sub modify_student_enrollment {	sub modify_student_enrollment {
my ($udom,$uname,$uid,$first,$middle,$last,$gene,$usec,$end,$start,$type,$locktype,$cid) = @_;	my ($udom,$uname,$uid,$first,$middle,$last,$gene,$usec,$end,$start,$type,$locktype,$cid,$selfenroll,$context) = @_;
my ($cdom,$cnum,$chome);	my ($cdom,$cnum,$chome);
if (!$cid) {	if (!$cid) {
unless ($cid=$env{'request.course.id'}) {	unless ($cid=$env{'request.course.id'}) {
Line 5463 sub modify_student_enrollment {	Line 6121 sub modify_student_enrollment {
if ($usec) {	if ($usec) {
$uurl.='/'.$usec;	$uurl.='/'.$usec;
}	}
return &assignrole($udom,$uname,$uurl,'st',$end,$start);	return &assignrole($udom,$uname,$uurl,'st',$end,$start,undef,$selfenroll,$context);
}	}

sub format_name {	sub format_name {
Line 5546 sub createcourse {	Line 6204 sub createcourse {
# log existence	# log existence
my $newcourse = {	my $newcourse = {
$udom.'_'.$uname => {	$udom.'_'.$uname => {
description => &escape($description),	description => $description,
inst_code => &escape($inst_code),	inst_code => $inst_code,
owner => &escape($course_owner),	owner => $course_owner,
type => &escape($crstype),	type => $crstype,
},	},
};	};
&courseidput($udom,$newcourse);	&courseidput($udom,$newcourse,$uhome,'notime');
&flushcourselogs();
# set toplevel url	# set toplevel url
my $topurl=$url;	my $topurl=$url;
unless ($nonstandard) {	unless ($nonstandard) {
Line 5583 ENDINITMAP	Line 6240 ENDINITMAP
sub is_course {	sub is_course {
my ($cdom,$cnum) = @_;	my ($cdom,$cnum) = @_;
my %courses = &courseiddump($cdom,'.',1,'.','.',$cnum,undef,	my %courses = &courseiddump($cdom,'.',1,'.','.',$cnum,undef,
undef,'.',undef,1);	undef,'.');
if (exists($courses{$cdom.'_'.$cnum})) {	if (exists($courses{$cdom.'_'.$cnum})) {
return 1;	return 1;
}	}
Line 5593 sub is_course {	Line 6250 sub is_course {
# ---------------------------------------------------------- Assign Custom Role	# ---------------------------------------------------------- Assign Custom Role

sub assigncustomrole {	sub assigncustomrole {
my ($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start,$deleteflag)=@_;	my ($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start,$deleteflag,$selfenroll,$context)=@_;
return &assignrole($udom,$uname,$url,'cr/'.$rdom.'/'.$rnam.'/'.$rolename,	return &assignrole($udom,$uname,$url,'cr/'.$rdom.'/'.$rnam.'/'.$rolename,
$end,$start,$deleteflag);	$end,$start,$deleteflag,$selfenroll,$context);
}	}

# ----------------------------------------------------------------- Revoke Role	# ----------------------------------------------------------------- Revoke Role

sub revokerole {	sub revokerole {
my ($udom,$uname,$url,$role,$deleteflag)=@_;	my ($udom,$uname,$url,$role,$deleteflag,$selfenroll,$context)=@_;
my $now=time;	my $now=time;
return &assignrole($udom,$uname,$url,$role,$now,$deleteflag);	return &assignrole($udom,$uname,$url,$role,$now,undef,$deleteflag,$selfenroll,$context);
}	}

# ---------------------------------------------------------- Revoke Custom Role	# ---------------------------------------------------------- Revoke Custom Role

sub revokecustomrole {	sub revokecustomrole {
my ($udom,$uname,$url,$rdom,$rnam,$rolename,$deleteflag)=@_;	my ($udom,$uname,$url,$rdom,$rnam,$rolename,$deleteflag,$selfenroll,$context)=@_;
my $now=time;	my $now=time;
return &assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$now,	return &assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$now,
$deleteflag);	$deleteflag,$selfenroll,$context);
}	}

# ------------------------------------------------------------ Disk usage	# ------------------------------------------------------------ Disk usage
sub diskusage {	sub diskusage {
my ($udom,$uname,$directoryRoot)=@_;	my ($udom,$uname,$directorypath,$getpropath)=@_;
$directoryRoot =~ s/\/$//;	$directorypath =~ s/\/$//;
my $listing=&reply('du:'.$directoryRoot,homeserver($uname,$udom));	my $listing=&reply('du2:'.&escape($directorypath).':'
	.&escape($getpropath).':'.&escape($uname).':'
	.&escape($udom),homeserver($uname,$udom));
	if ($listing eq 'unknown_cmd') {
	if ($getpropath) {
	$directorypath = &propath($udom,$uname).'/'.$directorypath;
	}
	$listing = &reply('du:'.$directorypath,homeserver($uname,$udom));
	}
return $listing;	return $listing;
}	}

Line 5860 sub modify_access_controls {	Line 6525 sub modify_access_controls {
}	}
}	}
}	}
	my ($group);
	if (&is_course($domain,$user)) {
	($group,my $file) = split(/\//,$file_name,2);
	}
$deloutcome = &del('file_permissions',\@deletions,$domain,$user);	$deloutcome = &del('file_permissions',\@deletions,$domain,$user);
$new_values{$file_name."\0".'accesscontrol'} = \%new_control;	$new_values{$file_name."\0".'accesscontrol'} = \%new_control;
$outcome = &put('file_permissions',\%new_values,$domain,$user);	$outcome = &put('file_permissions',\%new_values,$domain,$user);
# remove lock	# remove lock
my @del_lock = ($file_name."\0".'locked_access_records');	my @del_lock = ($file_name."\0".'locked_access_records');
my $dellockoutcome = &del('file_permissions',\@del_lock,$domain,$user);	my $dellockoutcome = &del('file_permissions',\@del_lock,$domain,$user);
my ($file,$group);
if (&is_course($domain,$user)) {
($group,$file) = split(/\//,$file_name,2);
} else {
$file = $file_name;
}
my $sqlresult =	my $sqlresult =
&update_portfolio_table($user,$domain,$file,'portfolio_access',	&update_portfolio_table($user,$domain,$file_name,'portfolio_access',
$group);	$group);
} else {	} else {
$outcome = "error: could not obtain lockfile\n";	$outcome = "error: could not obtain lockfile\n";
Line 6036 sub unmark_as_readonly {	Line 6699 sub unmark_as_readonly {
# ------------------------------------------------------------ Directory lister	# ------------------------------------------------------------ Directory lister

sub dirlist {	sub dirlist {
my ($uri,$userdomain,$username,$alternateDirectoryRoot)=@_;	my ($uri,$userdomain,$username,$getpropath,$getuserdir,$alternateRoot)=@_;

$uri=~s/^\///;	$uri=~s/^\///;
$uri=~s/\/$//;	$uri=~s/\/$//;
my ($udom, $uname);	my ($udom, $uname);
(undef,$udom,$uname)=split(/\//,$uri);	if ($getuserdir) {
if(defined($userdomain)) {
$udom = $userdomain;	$udom = $userdomain;
}
if(defined($username)) {
$uname = $username;	$uname = $username;
	} else {
	(undef,$udom,$uname)=split(/\//,$uri);
	if(defined($userdomain)) {
	$udom = $userdomain;
	}
	if(defined($username)) {
	$uname = $username;
	}
}	}
	my ($dirRoot,$listing,@listing_results);

my $dirRoot = $perlvar{'lonDocRoot'};	$dirRoot = $perlvar{'lonDocRoot'};
if(defined($alternateDirectoryRoot)) {	if (defined($getpropath)) {
$dirRoot = $alternateDirectoryRoot;	$dirRoot = &propath($udom,$uname);
$dirRoot =~ s/\/$//;	$dirRoot =~ s/\/$//;
	} elsif (defined($getuserdir)) {
	my $subdir=$uname.'__';
	$subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;
	$dirRoot = $Apache::lonnet::perlvar{'lonUsersDir'}
	."/$udom/$subdir/$uname";
	} elsif (defined($alternateRoot)) {
	$dirRoot = $alternateRoot;
}	}

if($udom) {	if($udom) {
if($uname) {	if($uname) {
my $listing = &reply('ls2:'.$dirRoot.'/'.$uri,	$listing = &reply('ls3:'.&escape('/'.$uri).':'.$getpropath.':'
&homeserver($uname,$udom));	.$getuserdir.':'.&escape($dirRoot)
my @listing_results;	.':'.&escape($uname).':'.&escape($udom),
	&homeserver($uname,$udom));
	if ($listing eq 'unknown_cmd') {
	$listing = &reply('ls2:'.$dirRoot.'/'.$uri,
	&homeserver($uname,$udom));
	} else {
	@listing_results = map { &unescape($_); } split(/:/,$listing);
	}
if ($listing eq 'unknown_cmd') {	if ($listing eq 'unknown_cmd') {
$listing = &reply('ls:'.$dirRoot.'/'.$uri,	$listing = &reply('ls:'.$dirRoot.'/'.$uri,
&homeserver($uname,$udom));	&homeserver($uname,$udom));
Line 6068 sub dirlist {	Line 6750 sub dirlist {
@listing_results = map { &unescape($_); } split(/:/,$listing);	@listing_results = map { &unescape($_); } split(/:/,$listing);
}	}
return @listing_results;	return @listing_results;
} elsif(!defined($alternateDirectoryRoot)) {	} elsif(!$alternateRoot) {
my %allusers;	my %allusers;
my %servers = &get_servers($udom,'library');	my %servers = &get_servers($udom,'library');
foreach my $tryserver (keys(%servers)) {	foreach my $tryserver (keys(%servers)) {
my $listing = &reply('ls2:'.$perlvar{'lonDocRoot'}.'/res/'.	$listing = &reply('ls3:'.&escape("/res/$udom").':::::'.
$udom, $tryserver);	&escape($udom),$tryserver);
my @listing_results;	if ($listing eq 'unknown_cmd') {
	$listing = &reply('ls2:'.$perlvar{'lonDocRoot'}.'/res/'.
	$udom, $tryserver);
	} else {
	@listing_results = map { &unescape($_); } split(/:/,$listing);
	}
if ($listing eq 'unknown_cmd') {	if ($listing eq 'unknown_cmd') {
$listing = &reply('ls:'.$perlvar{'lonDocRoot'}.'/res/'.	$listing = &reply('ls:'.$perlvar{'lonDocRoot'}.'/res/'.
$udom, $tryserver);	$udom, $tryserver);
Line 6101 sub dirlist {	Line 6788 sub dirlist {
} else {	} else {
return ('missing user name');	return ('missing user name');
}	}
} elsif(!defined($alternateDirectoryRoot)) {	} elsif(!defined($getpropath)) {
my @all_domains = sort(&all_domains());	my @all_domains = sort(&all_domains());
foreach my $domain (@all_domains) {	foreach my $domain (@all_domains) {
$domain = $perlvar{'lonDocRoot'}.'/res/'.$domain.'/&domain';	$domain = $perlvar{'lonDocRoot'}.'/res/'.$domain.'/&domain';
}	}
return @all_domains;	return @all_domains;
} else {	} else {
return ('missing domain');	return ('missing domain');
}	}
}	}
Line 6117 sub dirlist {	Line 6804 sub dirlist {
# when it was last modified. It will also return an error of -1	# when it was last modified. It will also return an error of -1
# if an error occurs	# if an error occurs

##
## FIXME: This subroutine assumes its caller knows something about the
## directory structure of the home server for the student ($root).
## Not a good assumption to make. Since this is for looking up files
## in user directories, the full path should be constructed by lond, not
## whatever machine we request data from.
##
sub GetFileTimestamp {	sub GetFileTimestamp {
my ($studentDomain,$studentName,$filename,$root)=@_;	my ($studentDomain,$studentName,$filename,$getuserdir)=@_;
$studentDomain = &LONCAPA::clean_domain($studentDomain);	$studentDomain = &LONCAPA::clean_domain($studentDomain);
$studentName = &LONCAPA::clean_username($studentName);	$studentName = &LONCAPA::clean_username($studentName);
my $subdir=$studentName.'__';	my ($fileStat) =
$subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;	&Apache::lonnet::dirlist($filename,$studentDomain,$studentName,
my $proname="$studentDomain/$subdir/$studentName";	undef,$getuserdir);
$proname .= '/'.$filename;
my ($fileStat) = &Apache::lonnet::dirlist($proname, $studentDomain,
$studentName, $root);
my @stats = split('&', $fileStat);	my @stats = split('&', $fileStat);
if($stats[0] ne 'empty' && $stats[0] ne 'no_such_dir') {	if($stats[0] ne 'empty' && $stats[0] ne 'no_such_dir') {
# @stats contains first the filename, then the stat output	# @stats contains first the filename, then the stat output
Line 6147 sub stat_file {	Line 6824 sub stat_file {
my ($uri) = @_;	my ($uri) = @_;
$uri = &clutter_with_no_wrapper($uri);	$uri = &clutter_with_no_wrapper($uri);

my ($udom,$uname,$file,$dir);	my ($udom,$uname,$file);
if ($uri =~ m-^/(uploaded\|editupload)/-) {	if ($uri =~ m-^/(uploaded\|editupload)/-) {
($udom,$uname,$file) =	($udom,$uname,$file) =
($uri =~ m-/(?:uploaded\|editupload)/?($match_domain)/?($match_name)/?(.*)-);	($uri =~ m-/(?:uploaded\|editupload)/?($match_domain)/?($match_name)/?(.*)-);
$file = 'userfiles/'.$file;	$file = 'userfiles/'.$file;
$dir = &propath($udom,$uname);
}	}
if ($uri =~ m-^/res/-) {	if ($uri =~ m-^/res/-) {
($udom,$uname) =	($udom,$uname) =
Line 6164 sub stat_file {	Line 6840 sub stat_file {
# unable to handle the uri	# unable to handle the uri
return ();	return ();
}	}
	my $getpropath;
my ($result) = &dirlist($file,$udom,$uname,$dir);	if ($file =~ /^userfiles\//) {
	$getpropath = 1;
	}
	my ($result) = &dirlist($file,$udom,$uname,$getpropath);
my @stats = split('&', $result);	my @stats = split('&', $result);

if($stats[0] ne 'empty' && $stats[0] ne 'no_such_dir') {	if($stats[0] ne 'empty' && $stats[0] ne 'no_such_dir') {
Line 6198 sub directcondval {	Line 6877 sub directcondval {
untie(%bighash);	untie(%bighash);
}	}
my $value = &docondval($sub_condition);	my $value = &docondval($sub_condition);
&appenv('user.state.'.$env{'request.course.id'}.".$number" => $value);	&appenv({'user.state.'.$env{'request.course.id'}.".$number" => $value});
return $value;	return $value;
}	}
if ($env{'user.state.'.$env{'request.course.id'}}) {	if ($env{'user.state.'.$env{'request.course.id'}}) {
Line 6355 sub resdata {	Line 7034 sub resdata {
}	}
if (!ref($result)) { return $result; }	if (!ref($result)) { return $result; }
foreach my $item (@which) {	foreach my $item (@which) {
if (defined($result->{$item})) {	if (defined($result->{$item->[0]})) {
return $result->{$item};	return [$result->{$item->[0]},$item->[1]];
}	}
}	}
return undef;	return undef;
Line 6384 sub EXT_cache_status {	Line 7063 sub EXT_cache_status {
sub EXT_cache_set {	sub EXT_cache_set {
my ($target_domain,$target_user) = @_;	my ($target_domain,$target_user) = @_;
my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;	my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
#&appenv($cachename => time);	#&appenv({$cachename => time});
}	}

# --------------------------------------------------------- Value of a Variable	# --------------------------------------------------------- Value of a Variable
Line 6568 sub EXT {	Line 7247 sub EXT {
# ----------------------------------------------------------- first, check user	# ----------------------------------------------------------- first, check user

my $userreply=&resdata($uname,$udom,'user',	my $userreply=&resdata($uname,$udom,'user',
($courselevelr,$courselevelm,	([$courselevelr,'resource'],
$courselevel));	[$courselevelm,'map' ],
if (defined($userreply)) { return $userreply; }	[$courselevel, 'course' ]));
	if (defined($userreply)) { return &get_reply($userreply); }

# ------------------------------------------------ second, check some of course	# ------------------------------------------------ second, check some of course
my $coursereply;	my $coursereply;
if (@groups > 0) {	if (@groups > 0) {
$coursereply = &check_group_parms($courseid,\@groups,$symbparm,	$coursereply = &check_group_parms($courseid,\@groups,$symbparm,
$mapparm,$spacequalifierrest);	$mapparm,$spacequalifierrest);
if (defined($coursereply)) { return $coursereply; }	if (defined($coursereply)) { return &get_reply($coursereply); }
}	}

$coursereply=&resdata($env{'course.'.$courseid.'.num'},	$coursereply=&resdata($env{'course.'.$courseid.'.num'},
$env{'course.'.$courseid.'.domain'},	$env{'course.'.$courseid.'.domain'},
'course',	'course',
($seclevelr,$seclevelm,$seclevel,	([$seclevelr, 'resource'],
$courselevelr));	[$seclevelm, 'map' ],
if (defined($coursereply)) { return $coursereply; }	[$seclevel, 'course' ],
	[$courselevelr,'resource']));
	if (defined($coursereply)) { return &get_reply($coursereply); }

# ------------------------------------------------------ third, check map parms	# ------------------------------------------------------ third, check map parms
my %parmhash=();	my %parmhash=();
Line 6596 sub EXT {	Line 7278 sub EXT {
$thisparm=$parmhash{$symbparm};	$thisparm=$parmhash{$symbparm};
untie(%parmhash);	untie(%parmhash);
}	}
if ($thisparm) { return $thisparm; }	if ($thisparm) { return &get_reply([$thisparm,'resource']); }
}	}
# ------------------------------------------ fourth, look in resource metadata	# ------------------------------------------ fourth, look in resource metadata

Line 6609 sub EXT {	Line 7291 sub EXT {
$filename=$env{'request.filename'};	$filename=$env{'request.filename'};
}	}
my $metadata=&metadata($filename,$spacequalifierrest);	my $metadata=&metadata($filename,$spacequalifierrest);
if (defined($metadata)) { return $metadata; }	if (defined($metadata)) { return &get_reply([$metadata,'resource']); }
$metadata=&metadata($filename,'parameter_'.$spacequalifierrest);	$metadata=&metadata($filename,'parameter_'.$spacequalifierrest);
if (defined($metadata)) { return $metadata; }	if (defined($metadata)) { return &get_reply([$metadata,'resource']); }

# ---------------------------------------------- fourth, look in rest pf course	# ---------------------------------------------- fourth, look in rest of course
if ($symbparm && defined($courseid) &&	if ($symbparm && defined($courseid) &&
$courseid eq $env{'request.course.id'}) {	$courseid eq $env{'request.course.id'}) {
my $coursereply=&resdata($env{'course.'.$courseid.'.num'},	my $coursereply=&resdata($env{'course.'.$courseid.'.num'},
$env{'course.'.$courseid.'.domain'},	$env{'course.'.$courseid.'.domain'},
'course',	'course',
($courselevelm,$courselevel));	([$courselevelm,'map' ],
if (defined($coursereply)) { return $coursereply; }	[$courselevel, 'course']));
	if (defined($coursereply)) { return &get_reply($coursereply); }
}	}
# ------------------------------------------------------------------ Cascade up	# ------------------------------------------------------------------ Cascade up
unless ($space eq '0') {	unless ($space eq '0') {
Line 6628 sub EXT {	Line 7311 sub EXT {
my $id=pop(@parts);	my $id=pop(@parts);
my $part=join('_',@parts);	my $part=join('_',@parts);
if ($part eq '') { $part='0'; }	if ($part eq '') { $part='0'; }
my $partgeneral=&EXT('resource.'.$part.'.'.$qualifierrest,	my @partgeneral=&EXT('resource.'.$part.'.'.$qualifierrest,
$symbparm,$udom,$uname,$section,1);	$symbparm,$udom,$uname,$section,1);
if (defined($partgeneral)) { return $partgeneral; }	if (defined($partgeneral[0])) { return &get_reply(\@partgeneral); }
}	}
if ($recurse) { return undef; }	if ($recurse) { return undef; }
my $pack_def=&packages_tab_default($filename,$varname);	my $pack_def=&packages_tab_default($filename,$varname);
if (defined($pack_def)) { return $pack_def; }	if (defined($pack_def)) { return &get_reply([$pack_def,'resource']); }

# ---------------------------------------------------- Any other user namespace	# ---------------------------------------------------- Any other user namespace
} elsif ($realm eq 'environment') {	} elsif ($realm eq 'environment') {
# ----------------------------------------------------------------- environment	# ----------------------------------------------------------------- environment
Line 6663 sub EXT {	Line 7345 sub EXT {
return '';	return '';
}	}

	sub get_reply {
	my ($reply_value) = @_;
	if (ref($reply_value) eq 'ARRAY') {
	if (wantarray) {
	return @$reply_value;
	}
	return $reply_value->[0];
	} else {
	return $reply_value;
	}
	}

sub check_group_parms {	sub check_group_parms {
my ($courseid,$groups,$symbparm,$mapparm,$what) = @_;	my ($courseid,$groups,$symbparm,$mapparm,$what) = @_;
my @groupitems = ();	my @groupitems = ();
my $resultitem;	my $resultitem;
my @levels = ($symbparm,$mapparm,$what);	my @levels = ([$symbparm,'resource'],[$mapparm,'map'],[$what,'course']);
foreach my $group (@{$groups}) {	foreach my $group (@{$groups}) {
foreach my $level (@levels) {	foreach my $level (@levels) {
my $item = $courseid.'.['.$group.'].'.$level;	my $item = $courseid.'.['.$group.'].'.$level->[0];
push(@groupitems,$item);	push(@groupitems,[$item,$level->[1]]);
}	}
}	}
my $coursereply = &resdata($env{'course.'.$courseid.'.num'},	my $coursereply = &resdata($env{'course.'.$courseid.'.num'},
Line 6764 sub metadata {	Line 7458 sub metadata {
if (($uri eq '') \|\|	if (($uri eq '') \|\|
(($uri =~ m\|^/*adm/\|) &&	(($uri =~ m\|^/*adm/\|) &&
($uri !~ m\|^adm/includes\|) && ($uri !~ m\|/bulletinboard$\|)) \|\|	($uri !~ m\|^adm/includes\|) && ($uri !~ m\|/bulletinboard$\|)) \|\|
($uri =~ m\|/$\|) \|\| ($uri =~ m\|/.meta$\|) \|\| ($uri =~ /^~/) \|\|	($uri =~ m\|/$\|) \|\| ($uri =~ m\|/.meta$\|) ) {
($uri =~ m\|home/$match_username/public_html/\|)) {	return undef;
	}
	if (($uri =~ /^~/ \|\| $uri =~ m{home/$match_username/public_html/})
	&& &Apache::lonxml::get_state('target') =~ /^(\|meta)$/) {
return undef;	return undef;
}	}
my $filename=$uri;	my $filename=$uri;
Line 6786 sub metadata {	Line 7483 sub metadata {
# if (! exists($metacache{$uri})) {	# if (! exists($metacache{$uri})) {
# $metacache{$uri}={};	# $metacache{$uri}={};
# }	# }
	my $cachetime = 60*60;
if ($liburi) {	if ($liburi) {
$liburi=&declutter($liburi);	$liburi=&declutter($liburi);
$filename=$liburi;	$filename=$liburi;
Line 6796 sub metadata {	Line 7494 sub metadata {
my %metathesekeys=();	my %metathesekeys=();
unless ($filename=~/\.meta$/) { $filename.='.meta'; }	unless ($filename=~/\.meta$/) { $filename.='.meta'; }
my $metastring;	my $metastring;
if ($uri !~ m -^(editupload)/-) {	if ($uri =~ /^~/ \|\| $uri =~ m{home/$match_username/public_html/}) {
	my $which = &hreflocation('','/'.($liburi \|\| $uri));
	$metastring =
	&Apache::lonnet::ssi_body($which,
	('grade_target' => 'meta'));
	$cachetime = 1; # only want this cached in the child not long term
	} elsif ($uri !~ m -^(editupload)/-) {
my $file=&filelocation('',&clutter($filename));	my $file=&filelocation('',&clutter($filename));
#push(@{$metaentry{$uri.'.file'}},$file);	#push(@{$metaentry{$uri.'.file'}},$file);
$metastring=&getfile($file);	$metastring=&getfile($file);
Line 6963 sub metadata {	Line 7667 sub metadata {
$metaentry{':keys'} = join(',',keys(%metathesekeys));	$metaentry{':keys'} = join(',',keys(%metathesekeys));
&metadata_generate_part0(\%metathesekeys,\%metaentry,$uri);	&metadata_generate_part0(\%metathesekeys,\%metaentry,$uri);
$metaentry{':allpossiblekeys'}=join(',',keys %metathesekeys);	$metaentry{':allpossiblekeys'}=join(',',keys %metathesekeys);
&do_cache_new('meta',$uri,\%metaentry,60*60);	&do_cache_new('meta',$uri,\%metaentry,$cachetime);
# this is the end of "was not already recently cached	# this is the end of "was not already recently cached
}	}
return $metaentry{':'.$what};	return $metaentry{':'.$what};
Line 7261 sub symbread {	Line 7965 sub symbread {
if ($syval) {	if ($syval) {
#unless ($syval=~/\_\d+$/) {	#unless ($syval=~/\_\d+$/) {
#unless ($env{'form.request.prefix'}=~/\.(\d+)\_$/) {	#unless ($env{'form.request.prefix'}=~/\.(\d+)\_$/) {
#&appenv('request.ambiguous' => $thisfn);	#&appenv({'request.ambiguous' => $thisfn});
#return $env{$cache_str}='';	#return $env{$cache_str}='';
#}	#}
#$syval.=$1;	#$syval.=$1;
Line 7313 sub symbread {	Line 8017 sub symbread {
return $env{$cache_str}=$syval;	return $env{$cache_str}=$syval;
}	}
}	}
&appenv('request.ambiguous' => $thisfn);	&appenv({'request.ambiguous' => $thisfn});
return $env{$cache_str}='';	return $env{$cache_str}='';
}	}

Line 7805 sub repcopy_userfile {	Line 8509 sub repcopy_userfile {
if (-e $transferfile) { return 'ok'; }	if (-e $transferfile) { return 'ok'; }
my $request;	my $request;
$uri=~s/^\///;	$uri=~s/^\///;
$request=new HTTP::Request('GET','http://'.&hostname(&homeserver($cnum,$cdom)).'/raw/'.$uri);	my $homeserver = &homeserver($cnum,$cdom);
	my $protocol = $protocol{$homeserver};
	$protocol = 'http' if ($protocol ne 'https');
	$request=new HTTP::Request('GET',$protocol.'://'.&hostname($homeserver).'/raw/'.$uri);
my $response=$ua->request($request,$transferfile);	my $response=$ua->request($request,$transferfile);
# did it work?	# did it work?
if ($response->is_error()) {	if ($response->is_error()) {
Line 7820 sub repcopy_userfile {	Line 8527 sub repcopy_userfile {

sub tokenwrapper {	sub tokenwrapper {
my $uri=shift;	my $uri=shift;
$uri=~s\|^http\://([^/]+)\|\|;	$uri=~s\|^https?\://([^/]+)\|\|;
$uri=~s\|^/\|\|;	$uri=~s\|^/\|\|;
$env{'user.environment'}=~/\/([^\/]+)\.id/;	$env{'user.environment'}=~/\/([^\/]+)\.id/;
my $token=$1;	my $token=$1;
my (undef,$udom,$uname,$file)=split('/',$uri,4);	my (undef,$udom,$uname,$file)=split('/',$uri,4);
if ($udom && $uname && $file) {	if ($udom && $uname && $file) {
$file=~s\|(\?\.)$\|\|;	$file=~s\|(\?\.)$\|\|;
&appenv("userfile.$udom/$uname/$file" => $env{'request.course.id'});	&appenv({"userfile.$udom/$uname/$file" => $env{'request.course.id'}});
return 'http://'.&hostname(&homeserver($uname,$udom)).'/'.$uri.	my $homeserver = &homeserver($uname,$udom);
	my $protocol = $protocol{$homeserver};
	$protocol = 'http' if ($protocol ne 'https');
	return $protocol.'://'.&hostname($homeserver).'/'.$uri.
(($uri=~/\?/)?'&':'?').'token='.$token.	(($uri=~/\?/)?'&':'?').'token='.$token.
'&tokenissued='.$perlvar{'lonHostID'};	'&tokenissued='.$perlvar{'lonHostID'};
} else {	} else {
Line 7843 sub tokenwrapper {	Line 8553 sub tokenwrapper {
sub getuploaded {	sub getuploaded {
my ($reqtype,$uri,$cdom,$cnum,$info,$rtncode) = @_;	my ($reqtype,$uri,$cdom,$cnum,$info,$rtncode) = @_;
$uri=~s/^\///;	$uri=~s/^\///;
$uri = 'http://'.&hostname(&homeserver($cnum,$cdom)).'/raw/'.$uri;	my $homeserver = &homeserver($cnum,$cdom);
	my $protocol = $protocol{$homeserver};
	$protocol = 'http' if ($protocol ne 'https');
	$uri = $protocol.'://'.&hostname($homeserver).'/raw/'.$uri;
my $ua=new LWP::UserAgent;	my $ua=new LWP::UserAgent;
my $request=new HTTP::Request($reqtype,$uri);	my $request=new HTTP::Request($reqtype,$uri);
my $response=$ua->request($request);	my $response=$ua->request($request);
Line 7885 sub filelocation {	Line 8598 sub filelocation {
} elsif ($file=~m{^/home/$match_username/public_html/}) {	} elsif ($file=~m{^/home/$match_username/public_html/}) {
# is a correct contruction space reference	# is a correct contruction space reference
$location = $file;	$location = $file;
	} elsif ($file =~ m-^\Q$Apache::lonnet::perlvar{'lonTabDir'}\E/-) {
	$location = $file;
} elsif ($file=~/^\/*(uploaded\|editupload)/) { # is an uploaded file	} elsif ($file=~/^\/*(uploaded\|editupload)/) { # is an uploaded file
my ($udom,$uname,$filename)=	my ($udom,$uname,$filename)=
($file=~m -^/+(?:uploaded\|editupload)/+($match_domain)/+($match_name)/+(.*)$-);	($file=~m -^/+(?:uploaded\|editupload)/+($match_domain)/+($match_name)/+(.*)$-);
Line 7893 sub filelocation {	Line 8608 sub filelocation {
my @ids=&current_machine_ids();	my @ids=&current_machine_ids();
foreach my $id (@ids) { if ($id eq $home) { $is_me=1; } }	foreach my $id (@ids) { if ($id eq $home) { $is_me=1; } }
if ($is_me) {	if ($is_me) {
$location=&propath($udom,$uname).	$location=&propath($udom,$uname).'/userfiles/'.$filename;
'/userfiles/'.$filename;
} else {	} else {
$location=$Apache::lonnet::perlvar{'lonDocRoot'}.'/userfiles/'.	$location=$Apache::lonnet::perlvar{'lonDocRoot'}.'/userfiles/'.
$udom.'/'.$uname.'/'.$filename;	$udom.'/'.$uname.'/'.$filename;
Line 7911 sub filelocation {	Line 8625 sub filelocation {
}	}
}	}
$location=~s://+:/:g; # remove duplicate /	$location=~s://+:/:g; # remove duplicate /
while ($location=~m:/\.\./:) {$location=~ s:/[^/]+/\.\./:/:g;} #remove dir/..	while ($location=~m{/\.\./}) {
	if ($location =~ m{/[^/]+/\.\./}) {
	$location=~ s{/[^/]+/\.\./}{/}g;
	} else {
	$location=~ s{/\.\./}{/}g;
	}
	} #remove dir/..
while ($location=~m:/\./:) {$location=~ s:/\./:/:g;} #remove /./	while ($location=~m:/\./:) {$location=~ s:/\./:/:g;} #remove /./
return $location;	return $location;
}	}

sub hreflocation {	sub hreflocation {
my ($dir,$file)=@_;	my ($dir,$file)=@_;
unless (($file=~m-^http://-i) \|\| ($file=~m-^/-)) {	unless (($file=~m-^https?\://-i) \|\| ($file=~m-^/-)) {
$file=filelocation($dir,$file);	$file=filelocation($dir,$file);
} elsif ($file=~m-^/adm/-) {	} elsif ($file=~m-^/adm/-) {
$file=~s-^/adm/wrapper/-/-;	$file=~s-^/adm/wrapper/-/-;
Line 8114 sub get_dns {	Line 8834 sub get_dns {
open(my $config,"<$perlvar{'lonTabDir'}/hosts.tab");	open(my $config,"<$perlvar{'lonTabDir'}/hosts.tab");
foreach my $dns (<$config>) {	foreach my $dns (<$config>) {
next if ($dns !~ /^\^(\S*)/x);	next if ($dns !~ /^\^(\S*)/x);
$alldns{$1} = 1;	my $line = $1;
	my ($host,$protocol) = split(/:/,$line);
	if ($protocol ne 'https') {
	$protocol = 'http';
	}
	$alldns{$host} = $protocol;
}	}
while (%alldns) {	while (%alldns) {
my ($dns) = keys(%alldns);	my ($dns) = keys(%alldns);
delete($alldns{$dns});
my $ua=new LWP::UserAgent;	my $ua=new LWP::UserAgent;
my $request=new HTTP::Request('GET',"http://$dns$url");	my $request=new HTTP::Request('GET',"$alldns{$dns}://$dns$url");
my $response=$ua->request($request);	my $response=$ua->request($request);
	delete($alldns{$dns});
next if ($response->is_error());	next if ($response->is_error());
my @content = split("\n",$response->content);	my @content = split("\n",$response->content);
&Apache::lonnet::do_cache_new('dns',$url,\@content,302460*60);	&Apache::lonnet::do_cache_new('dns',$url,\@content,302460*60);
Line 8186 sub get_dns {	Line 8911 sub get_dns {
}	}
return $domain{$name}{$what};	return $domain{$name}{$what};
}	}

	sub domain_info {
	&load_domain_tab() if (!$loaded);
	return %domain;
	}

}	}


Line 8203 sub get_dns {	Line 8934 sub get_dns {
next if ($configline =~ /^(\#\|\s*$ )/x);	next if ($configline =~ /^(\#\|\s*$ )/x);
next if ($configline =~ /^\^/);	next if ($configline =~ /^\^/);
chomp($configline);	chomp($configline);
my ($id,$domain,$role,$name)=split(/:/,$configline);	my ($id,$domain,$role,$name,$protocol)=split(/:/,$configline);
$name=~s/\s//g;	$name=~s/\s//g;
if ($id && $domain && $role && $name) {	if ($id && $domain && $role && $name) {
$hostname{$id}=$name;	$hostname{$id}=$name;
push(@{$name_to_host{$name}}, $id);	push(@{$name_to_host{$name}}, $id);
$hostdom{$id}=$domain;	$hostdom{$id}=$domain;
if ($role eq 'library') { $libserv{$id}=$name; }	if ($role eq 'library') { $libserv{$id}=$name; }
	if (defined($protocol)) {
	if ($protocol eq 'https') {
	$protocol{$id} = $protocol;
	} else {
	$protocol{$id} = 'http';
	}
	} else {
	$protocol{$id} = 'http';
	}
}	}
}	}
}	}
Line 8254 sub get_dns {	Line 8994 sub get_dns {
return %name_to_host;	return %name_to_host;
}	}

	sub all_host_domain {
	&load_hosts_tab() if (!$loaded);
	return %hostdom;
	}

sub is_library {	sub is_library {
&load_hosts_tab() if (!$loaded);	&load_hosts_tab() if (!$loaded);

Line 8395 sub get_dns {	Line 9140 sub get_dns {

return %iphost;	return %iphost;
}	}

	#
	# Given a DNS returns the loncapa host name for that DNS
	#
	sub host_from_dns {
	my ($dns) = @_;
	my @hosts;
	my $ip;

	if (exists($name_to_ip{$dns})) {
	$ip = $name_to_ip{$dns};
	}
	if (!$ip) {
	$ip = gethostbyname($dns); # Initial translation to IP is in net order.
	if (length($ip) == 4) {
	$ip = &IO::Socket::inet_ntoa($ip);
	}
	}
	if ($ip) {
	@hosts = get_hosts_from_ip($ip);
	return $hosts[0];
	}
	return undef;
	}

}	}

BEGIN {	BEGIN {
Line 8484 $memcache=new Cache::Memcached({'servers	Line 9254 $memcache=new Cache::Memcached({'servers

$processmarker='_'.time.'_'.$perlvar{'lonHostID'};	$processmarker='_'.time.'_'.$perlvar{'lonHostID'};
$dumpcount=0;	$dumpcount=0;
	$locknum=0;

&logtouch();	&logtouch();
&logthis('<font color="yellow">INFO: Read configuration</font>');	&logthis('<font color="yellow">INFO: Read configuration</font>');
Line 8651 when the connection is brought back up	Line 9422 when the connection is brought back up
=item * B<con_failed>: unable to contact remote host and unable to save message	=item * B<con_failed>: unable to contact remote host and unable to save message
for later delivery	for later delivery

=item * B<error:>: an error a occured, a description of the error follows the :	=item * B<error:>: an error a occurred, a description of the error follows the :

=item * B<no_such_host>: unable to fund a host associated with the user/domain	=item * B<no_such_host>: unable to fund a host associated with the user/domain
that was requested	that was requested
Line 8666 that was requested	Line 9437 that was requested

=item *	=item *
X<appenv()>	X<appenv()>
B<appenv(%hash)>: the value of %hash is written to	B<appenv($hashref,$rolesarrayref)>: the value of %{$hashref} is written to
the user envirnoment file, and will be restored for each access this	the user envirnoment file, and will be restored for each access this
user makes during this session, also modifies the %env for the current	user makes during this session, also modifies the %env for the current
process	process. Optional rolesarrayref - if defined contains a reference to an array
	of roles which are exempt from the restriction on modifying user.role entries
	in the user's environment.db and in %env.

=item *	=item *
X<delenv()>	X<delenv()>
B<delenv($regexp)>: removes all items from the session	B<delenv($delthis,$regexp)>: removes all items from the session
environment file that matches the regular expression in $regexp. The	environment file that begin with $delthis. If the
values are also delted from the current processes %env.	optional second arg - $regexp - is true, $delthis is treated as a
	regular expression, otherwise \Q$delthis\E is used.
	The values are also deleted from the current processes %env.

=item * get_env_multiple($name)	=item * get_env_multiple($name)

Line 8772 and course level	Line 9547 and course level

=item *	=item *

plaintext($short) : return value in %prp hash (rolesplain.tab); plain text	plaintext($short,$type,$cid,$forcedefault) : return value in %prp hash
explanation of a user role term	(rolesplain.tab); plain text explanation of a user role term.
	$type is Course (default) or Group.
	If $forcedefault evaluates to true, text returned will be default
	text for $type. Otherwise, if this is a course, the text returned
	will be a custom name for the role (if defined in the course's
	environment). If no custom name is defined the default is returned.

=item *	=item *

get_my_roles($uname,$udom,$context,$types,$roles,$roledoms) :	get_my_roles($uname,$udom,$context,$types,$roles,$roledoms,$withsec) :
All arguments are optional. Returns a hash of a roles, either for	All arguments are optional. Returns a hash of a roles, either for
co-author/assistant author roles for a user's Construction Space	co-author/assistant author roles for a user's Construction Space
(default), or if $context is 'userroles', roles for the user himself,	(default), or if $context is 'userroles', roles for the user himself,
In the hash, keys are set to colon-sparated $uname,$udom,and $role,	In the hash, keys are set to colon-separated $uname,$udom,$role, and
and value is set to colon-separated start and end times for the role.	(optionally) if $withsec is true, a fourth colon-separated item - $section.
If no username and domain are specified, will default to current	For each key, value is set to colon-separated start and end times for
user/domain. Types, roles, and roledoms are references to arrays,	the role. If no username and domain are specified, will default to
	current user/domain. Types, roles, and roledoms are references to arrays
of role statuses (active, future or previous), roles	of role statuses (active, future or previous), roles
(e.g., cc,in, st etc.) and domains of the roles which can be used	(e.g., cc,in, st etc.) and domains of the roles which can be used
to restrict the list of roles reported. If no array ref is	to restrict the list of roles reported. If no array ref is
Line 8798 provided for types, will default to retu	Line 9579 provided for types, will default to retu

=item *	=item *

assignrole($udom,$uname,$url,$role,$end,$start) : assign role; give a role to a	assignrole($udom,$uname,$url,$role,$end,$start,$deleteflag,$selfenroll,$context) : assign role; give a role to a
user for the level given by URL. Optional start and end dates (leave empty	user for the level given by URL. Optional start and end dates (leave empty
string or zero for "no date")	string or zero for "no date")

Line 8815 modifyuserauth($udom,$uname,$umode,$upas	Line 9596 modifyuserauth($udom,$uname,$umode,$upas

=item *	=item *

modifyuser($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene) :	modifyuser($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,
	$forceid,$desiredhome,$email,$inststatus) :
modify user	modify user

=item *	=item *

modifystudent	modifystudent

modify a students enrollment and identification information.	modify a student's enrollment and identification information.
The course id is resolved based on the current users environment.	The course id is resolved based on the current users environment.
This means the envoking user must be a course coordinator or otherwise	This means the envoking user must be a course coordinator or otherwise
associated with a course.	associated with a course.
Line 8834 Inputs:	Line 9616 Inputs:

=over 4	=over 4

=item B<$udom> Students loncapa domain	=item B<$udom> Student's loncapa domain

=item B<$uname> Students loncapa login name	=item B<$uname> Student's loncapa login name

=item B<$uid> Students id/student number	=item B<$uid> Student/Employee ID

=item B<$umode> Students authentication mode	=item B<$umode> Student's authentication mode

=item B<$upass> Students password	=item B<$upass> Student's password

=item B<$first> Students first name	=item B<$first> Student's first name

=item B<$middle> Students middle name	=item B<$middle> Student's middle name

=item B<$last> Students last name	=item B<$last> Student's last name

=item B<$gene> Students generation	=item B<$gene> Student's generation

=item B<$usec> Students section in course	=item B<$usec> Student's section in course

=item B<$end> Unix time of the roles expiration	=item B<$end> Unix time of the roles expiration

Line 8862 Inputs:	Line 9644 Inputs:

=item B<$desiredhome> server to use as home server for student	=item B<$desiredhome> server to use as home server for student

	=item B<$email> Student's permanent e-mail address

	=item B<$type> Type of enrollment (auto or manual)

	=item B<$locktype> boolean - enrollment type locked to prevent Autoenroll.pl changing manual to auto

	=item B<$cid> courseID - needed if a course role is assigned by a user whose current role is DC

	=item B<$selfenroll> boolean - 1 if user role change occurred via self-enrollment

	=item B<$context> role change context (shown in User Management Logs display in a course)

	=item B<$inststatus> institutional status of user - : separated string of escaped status types

=back	=back

=item *	=item *
Line 8895 Inputs:	Line 9691 Inputs:

=item $start	=item $start

	=item $type

	=item $locktype

	=item $cid

	=item $selfenroll

	=item $context

=back	=back


Line 9203 Returns:	Line 10009 Returns:
'key_exists: <key>' -> failed to anything out of $storehash, as at	'key_exists: <key>' -> failed to anything out of $storehash, as at
least <key> already existed in the db (other	least <key> already existed in the db (other
requested keys may also already exist)	requested keys may also already exist)
'error: <msg>' -> unable to tie the DB or other erorr occured	'error: <msg>' -> unable to tie the DB or other error occurred
'con_lost' -> unable to contact request server	'con_lost' -> unable to contact request server
'refused' -> action was not allowed by remote machine	'refused' -> action was not allowed by remote machine

Line 9231 put_dom($namespace,$storehash,$udom,$uho	Line 10037 put_dom($namespace,$storehash,$udom,$uho
domain level either on specified domain server ($uhome) or primary domain	domain level either on specified domain server ($uhome) or primary domain
server ($udom and $uhome are optional)	server ($udom and $uhome are optional)

	=item *

	get_domain_defaults($target_domain) : returns hash with defaults for
	authentication and language in the domain. Keys are: auth_def, auth_arg_def,
	lang_def; corresponsing values are authentication type (internal, krb4, krb5,
	or localauth), initial password or a kerberos realm, language (e.g., en-us).
	Values are retrieved from cache (if current), or from domain's configuration.db
	(if available), or lastly from values in lonTabs/dns_domain,tab,
	or lonTabs/domain.tab.

	%domdefaults = &get_auth_defaults($target_domain);

=back	=back

=head2 Network Status Functions	=head2 Network Status Functions
Line 9245 dirlist($uri) : return directory list ba	Line 10063 dirlist($uri) : return directory list ba

spareserver() : find server with least workload from spare.tab	spareserver() : find server with least workload from spare.tab


	=item *

	host_from_dns($dns) : Returns the loncapa hostname corresponding to a DNS name or undef
	if there is no corresponding loncapa host.

=back	=back


=head2 Apache Request	=head2 Apache Request

=over 4	=over 4

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

Removed from v.1.918
changed lines
	Added in v.1.996