loncom/lonnet/perl/lonnet.pm - diff

Return to lonnet.pm CVS log

Up to [LON-CAPA] / loncom / lonnet / perl

Diff for /loncom/lonnet/perl/lonnet.pm between versions 1.1212 and 1.1375

version 1.1212, 2013/02/05 21:32:49	version 1.1375, 2018/04/14 02:30:01
Line 71 delayed.	Line 71 delayed.
package Apache::lonnet;	package Apache::lonnet;

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

Line 92 use GDBM_File;	Line 91 use GDBM_File;
use HTML::LCParser;	use HTML::LCParser;
use Fcntl qw(:flock);	use Fcntl qw(:flock);
use Storable qw(thaw nfreeze);	use Storable qw(thaw nfreeze);
use Time::HiRes qw( gettimeofday tv_interval );	use Time::HiRes qw( sleep gettimeofday tv_interval );
use Cache::Memcached;	use Cache::Memcached;
use Digest::MD5;	use Digest::MD5;
use Math::Random;	use Math::Random;
Line 101 use LONCAPA qw(:DEFAULT :match);	Line 100 use LONCAPA qw(:DEFAULT :match);
use LONCAPA::Configuration;	use LONCAPA::Configuration;
use LONCAPA::lonmetadata;	use LONCAPA::lonmetadata;
use LONCAPA::Lond;	use LONCAPA::Lond;
	use LONCAPA::LWPReq;

use File::Copy;	use File::Copy;

my $readit;	my $readit;
my $max_connection_retries = 10; # Or some such value.	my $max_connection_retries = 20; # Or some such value.

require Exporter;	require Exporter;

Line 146 our @EXPORT = qw(%env);	Line 146 our @EXPORT = qw(%env);
sub logtouch {	sub logtouch {
my $execdir=$perlvar{'lonDaemons'};	my $execdir=$perlvar{'lonDaemons'};
unless (-e "$execdir/logs/lonnet.log") {	unless (-e "$execdir/logs/lonnet.log") {
open(my $fh,">>$execdir/logs/lonnet.log");	open(my $fh,">>","$execdir/logs/lonnet.log");
close $fh;	close $fh;
}	}
my ($wwwuid,$wwwgid)=(getpwnam('www'))[2,3];	my ($wwwuid,$wwwgid)=(getpwnam('www'))[2,3];
Line 158 sub logthis {	Line 158 sub logthis {
my $execdir=$perlvar{'lonDaemons'};	my $execdir=$perlvar{'lonDaemons'};
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")) {
my $logstring = $local. " ($$): ".$message."\n"; # Keep any \'s in string.	my $logstring = $local. " ($$): ".$message."\n"; # Keep any \'s in string.
print $fh $logstring;	print $fh $logstring;
close($fh);	close($fh);
Line 171 sub logperm {	Line 171 sub logperm {
my $execdir=$perlvar{'lonDaemons'};	my $execdir=$perlvar{'lonDaemons'};
my $now=time;	my $now=time;
my $local=localtime($now);	my $local=localtime($now);
if (open(my $fh,">>$execdir/logs/lonnet.perm.log")) {	if (open(my $fh,">>","$execdir/logs/lonnet.perm.log")) {
print $fh "$now:$message:$local\n";	print $fh "$now:$message:$local\n";
close($fh);	close($fh);
}	}
Line 229 sub get_server_distarch {	Line 229 sub get_server_distarch {
return;	return;
}	}

	sub get_servercerts_info {
	my ($lonhost,$context) = @_;
	my ($rep,$uselocal);
	if (grep { $_ eq $lonhost } &current_machine_ids()) {
	$uselocal = 1;
	}
	if (($context ne 'cgi') && ($uselocal)) {
	my $distro = (split(/\:/,&get_server_distarch($lonhost)))[0];
	if ($distro eq '') {
	$uselocal = 0;
	} elsif ($distro =~ /^(?:centos\|redhat\|scientific)(\d+)$/) {
	if ($1 < 6) {
	$uselocal = 0;
	}
	} elsif ($distro =~ /^(?:sles)(\d+)$/) {
	if ($1 < 12) {
	$uselocal = 0;
	}
	}
	}
	if ($uselocal) {
	$rep = LONCAPA::Lond::server_certs(\%perlvar);
	} else {
	$rep=&reply('servercerts',$lonhost);
	}
	my ($result,%returnhash);
	if (defined($lonhost)) {
	if (!defined(&hostname($lonhost))) {
	return;
	}
	}
	if (($rep=~/^(refused\|rejected\|error)/) \|\| ($rep eq 'con_lost') \|\|
	($rep eq 'unknown_cmd')) {
	$result = $rep;
	} else {
	$result = 'ok';
	my @pairs=split(/\&/,$rep);
	foreach my $item (@pairs) {
	my ($key,$value)=split(/=/,$item,2);
	my $what = &unescape($key);
	$returnhash{$what}=&thaw_unescape($value);
	}
	}
	return ($result,\%returnhash);
	}

sub get_server_loncaparev {	sub get_server_loncaparev {
my ($dom,$lonhost,$ignore_cache,$caller) = @_;	my ($dom,$lonhost,$ignore_cache,$caller) = @_;
if (defined($lonhost)) {	if (defined($lonhost)) {
Line 263 sub get_server_loncaparev {	Line 309 sub get_server_loncaparev {
$answer = &reply('serverloncaparev',$lonhost);	$answer = &reply('serverloncaparev',$lonhost);
if (($answer eq 'unknown_cmd') \|\| ($answer eq 'con_lost')) {	if (($answer eq 'unknown_cmd') \|\| ($answer eq 'con_lost')) {
if ($caller eq 'loncron') {	if ($caller eq 'loncron') {
my $ua=new LWP::UserAgent;
$ua->timeout(4);
my $protocol = $protocol{$lonhost};	my $protocol = $protocol{$lonhost};
$protocol = 'http' if ($protocol ne 'https');	$protocol = 'http' if ($protocol ne 'https');
my $url = $protocol.'://'.&hostname($lonhost).'/adm/about.html';	my $url = $protocol.'://'.&hostname($lonhost).'/adm/about.html';
my $request=new HTTP::Request('GET',$url);	my $request=new HTTP::Request('GET',$url);
my $response=$ua->request($request);	my $response=&LONCAPA::LWPReq::makerequest($lonhost,$request,'',\%perlvar,4,1);
unless ($response->is_error()) {	unless ($response->is_error()) {
my $content = $response->content;	my $content = $response->content;
if ($content =~ /<p>VERSION\:\s*([\w.\-]+)<\/p>/) {	if ($content =~ /<p>VERSION\:\s*([\w.\-]+)<\/p>/) {
Line 356 sub get_remote_globals {	Line 400 sub get_remote_globals {
}	}

sub remote_devalidate_cache {	sub remote_devalidate_cache {
my ($lonhost,$name,$id) = @_;	my ($lonhost,$cachekeys) = @_;
my $response = &reply('devalidatecache:'.&escape($name).':'.&escape($id),$lonhost);	my $items;
	return unless (ref($cachekeys) eq 'ARRAY');
	my $cachestr = join('&',@{$cachekeys});
	my $response = &reply('devalidatecache:'.&escape($cachestr),$lonhost);
return $response;	return $response;
}	}

Line 372 sub subreply {	Line 419 sub subreply {

my $lockfile=$peerfile.".lock";	my $lockfile=$peerfile.".lock";
while (-e $lockfile) { # Need to wait for the lockfile to disappear.	while (-e $lockfile) { # Need to wait for the lockfile to disappear.
sleep(1);	sleep(0.1);
}	}
# At this point, either a loncnew parent is listening or an old lonc	# At this point, either a loncnew parent is listening or an old lonc
# or loncnew child is listening so we can connect or everything's dead.	# or loncnew child is listening so we can connect or everything's dead.
Line 390 sub subreply {	Line 437 sub subreply {
} else {	} else {
&create_connection(&hostname($server),$server);	&create_connection(&hostname($server),$server);
}	}
sleep(1); # Try again later if failed connection.	sleep(0.1); # Try again later if failed connection.
}	}
my $answer;	my $answer;
if ($client) {	if ($client) {
Line 419 sub reply {	Line 466 sub reply {

sub reconlonc {	sub reconlonc {
my ($lonid) = @_;	my ($lonid) = @_;
my $hostname = &hostname($lonid);
if ($lonid) {	if ($lonid) {
	my $hostname = &hostname($lonid);
my $peerfile="$perlvar{'lonSockDir'}/$hostname";	my $peerfile="$perlvar{'lonSockDir'}/$hostname";
if ($hostname && -e $peerfile) {	if ($hostname && -e $peerfile) {
&logthis("Trying to reconnect lonc for $lonid ($hostname)");	&logthis("Trying to reconnect lonc for $lonid ($hostname)");
Line 438 sub reconlonc {	Line 485 sub reconlonc {

&logthis("Trying to reconnect lonc");	&logthis("Trying to reconnect lonc");
my $loncfile="$perlvar{'lonDaemons'}/logs/lonc.pid";	my $loncfile="$perlvar{'lonDaemons'}/logs/lonc.pid";
if (open(my $fh,"<$loncfile")) {	if (open(my $fh,"<",$loncfile)) {
my $loncpid=<$fh>;	my $loncpid=<$fh>;
chomp($loncpid);	chomp($loncpid);
if (kill 0 => $loncpid) {	if (kill 0 => $loncpid) {
&logthis("lonc at pid $loncpid responding, sending USR1");	&logthis("lonc at pid $loncpid responding, sending USR1");
kill USR1 => $loncpid;	kill USR1 => $loncpid;
sleep 1;	sleep 1;
} else {	} else {
&logthis(	&logthis(
"<font color=\"blue\">WARNING:".	"<font color=\"blue\">WARNING:".
" lonc at pid $loncpid not responding, giving up</font>");	" lonc at pid $loncpid not responding, giving up</font>");
Line 466 sub critical {	Line 513 sub critical {
}	}
my $answer=reply($cmd,$server);	my $answer=reply($cmd,$server);
if ($answer eq 'con_lost') {	if ($answer eq 'con_lost') {
&reconlonc("$perlvar{'lonSockDir'}/$server");	&reconlonc($server);
my $answer=reply($cmd,$server);	my $answer=reply($cmd,$server);
if ($answer eq 'con_lost') {	if ($answer eq 'con_lost') {
my $now=time;	my $now=time;
Line 478 sub critical {	Line 525 sub critical {
$dumpcount++;	$dumpcount++;
{	{
my $dfh;	my $dfh;
if (open($dfh,">$dfilename")) {	if (open($dfh,">",$dfilename)) {
print $dfh "$cmd\n";	print $dfh "$cmd\n";
close($dfh);	close($dfh);
}	}
}	}
sleep 2;	sleep 1;
my $wcmd='';	my $wcmd='';
{	{
my $dfh;	my $dfh;
if (open($dfh,"<$dfilename")) {	if (open($dfh,"<",$dfilename)) {
$wcmd=<$dfh>;	$wcmd=<$dfh>;
close($dfh);	close($dfh);
}	}
Line 603 sub transfer_profile_to_env {	Line 650 sub transfer_profile_to_env {

# ---------------------------------------------------- Check for valid session	# ---------------------------------------------------- Check for valid session
sub check_for_valid_session {	sub check_for_valid_session {
my ($r,$name) = @_;	my ($r,$name,$userhashref,$domref) = @_;
my %cookies=CGI::Cookie->parse($r->header_in('Cookie'));	my %cookies=CGI::Cookie->parse($r->header_in('Cookie'));
	my ($linkname,$pubname);
if ($name eq '') {	if ($name eq '') {
$name = 'lonID';	$name = 'lonID';
	$linkname = 'lonLinkID';
	$pubname = 'lonPubID';
}	}
my $lonid=$cookies{$name};	my $lonid=$cookies{$name};
	if (!$lonid) {
	if (($name eq 'lonID') && ($ENV{'SERVER_PORT'} != 443) && ($linkname)) {
	$lonid=$cookies{$linkname};
	}
	if (!$lonid) {
	if (($name eq 'lonID') && ($pubname)) {
	$lonid=$cookies{$pubname};
	}
	}
	}
return undef if (!$lonid);	return undef if (!$lonid);

my $handle=&LONCAPA::clean_handle($lonid->value);	my $handle=&LONCAPA::clean_handle($lonid->value);
Line 618 sub check_for_valid_session {	Line 678 sub check_for_valid_session {
} else {	} else {
$lonidsdir=$r->dir_config('lonIDsDir');	$lonidsdir=$r->dir_config('lonIDsDir');
}	}
return undef if (!-e "$lonidsdir/$handle.id");	if (!-e "$lonidsdir/$handle.id") {
	if ((ref($domref)) && ($name eq 'lonID') &&
	($handle =~ /^($match_username)\_\d+\_($match_domain)\_(.+)$/)) {
	my ($possuname,$possudom,$possuhome) = ($1,$2,$3);
	if ((&domain($possudom) ne '') && (&homeserver($possuname,$possudom) eq $possuhome)) {
	$$domref = $possudom;
	}
	}
	return undef;
	}

my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");	my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
return undef if (!$opened);	return undef if (!$opened);
Line 634 sub check_for_valid_session {	Line 703 sub check_for_valid_session {
\|\| !defined($disk_env{'user.domain'})) {	\|\| !defined($disk_env{'user.domain'})) {
return undef;	return undef;
}	}
if ($r->user() eq '') {
if ($disk_env{'user.domain'} eq $r->dir_config('lonDefDomain')) {	if (ref($userhashref) eq 'HASH') {
$r->user($disk_env{'user.name'});	$userhashref->{'name'} = $disk_env{'user.name'};
} else {	$userhashref->{'domain'} = $disk_env{'user.domain'};
$r->user($disk_env{'user.name'}.':'.$disk_env{'user.domain'});	$userhashref->{'lti'} = $disk_env{'request.lti.login'};
	if ($userhashref->{'lti'}) {
	$userhashref->{'ltitarget'} = $disk_env{'request.lti.target'};
	$userhashref->{'ltiuri'} = $disk_env{'request.lti.uri'};
}	}
}	}

return $handle;	return $handle;
}	}

Line 674 sub appenv {	Line 747 sub appenv {
if (($key =~ /^user\.role/) \|\| ($key =~ /^user\.priv/)) {	if (($key =~ /^user\.role/) \|\| ($key =~ /^user\.priv/)) {
$refused = 1;	$refused = 1;
if (ref($roles) eq 'ARRAY') {	if (ref($roles) eq 'ARRAY') {
my ($type,$role) = ($key =~ /^user\.(role\|priv)\.([^.]+)\./);	my ($type,$role) = ($key =~ m{^user\.(role\|priv)\.(.+?)\./});
if (grep(/^\Q$role\E$/,@{$roles})) {	if (grep(/^\Q$role\E$/,@{$roles})) {
$refused = 0;	$refused = 0;
}	}
Line 847 sub spareserver {	Line 920 sub spareserver {
if (ref($spareshash) eq 'HASH') {	if (ref($spareshash) eq 'HASH') {
if (ref($spareshash->{'primary'}) eq 'ARRAY') {	if (ref($spareshash->{'primary'}) eq 'ARRAY') {
foreach my $try_server (@{ $spareshash->{'primary'} }) {	foreach my $try_server (@{ $spareshash->{'primary'} }) {
if ($uint_dom) {	next unless (&spare_can_host($udom,$uint_dom,$remotesessions,
next unless (&spare_can_host($udom,$uint_dom,$remotesessions,	$try_server));
$try_server));
}
($spare_server, $lowest_load) =	($spare_server, $lowest_load) =
&compare_server_load($try_server, $spare_server, $lowest_load);	&compare_server_load($try_server, $spare_server, $lowest_load);
}	}
Line 861 sub spareserver {	Line 932 sub spareserver {
if (!$found_server) {	if (!$found_server) {
if (ref($spareshash->{'default'}) eq 'ARRAY') {	if (ref($spareshash->{'default'}) eq 'ARRAY') {
foreach my $try_server (@{ $spareshash->{'default'} }) {	foreach my $try_server (@{ $spareshash->{'default'} }) {
if ($uint_dom) {	next unless (&spare_can_host($udom,$uint_dom,
next unless (&spare_can_host($udom,$uint_dom,	$remotesessions,$try_server));
$remotesessions,$try_server));
}
($spare_server, $lowest_load) =	($spare_server, $lowest_load) =
&compare_server_load($try_server, $spare_server, $lowest_load);	&compare_server_load($try_server, $spare_server, $lowest_load);
}	}
Line 888 sub spareserver {	Line 957 sub spareserver {
}	}

sub compare_server_load {	sub compare_server_load {
my ($try_server, $spare_server, $lowest_load) = @_;	my ($try_server, $spare_server, $lowest_load, $required) = @_;

	if ($required) {
	my ($reqdmajor,$reqdminor) = ($required =~ /^(\d+)\.(\d+)$/);
	my $remoterev = &get_server_loncaparev(undef,$try_server);
	my ($major,$minor) = ($remoterev =~ /^\'?(\d+)\.(\d+)\.[\w.\-]+\'?$/);
	if (($major eq '' && $minor eq '') \|\|
	(($reqdmajor > $major) \|\| (($reqdmajor == $major) && ($reqdminor > $minor)))) {
	return ($spare_server,$lowest_load);
	}
	}

my $loadans = &reply('load', $try_server);	my $loadans = &reply('load', $try_server);
my $userloadans = &reply('userload',$try_server);	my $userloadans = &reply('userload',$try_server);
Line 949 sub has_user_session {	Line 1028 sub has_user_session {
# --------- determine least loaded server in a user's domain which allows login	# --------- determine least loaded server in a user's domain which allows login

sub choose_server {	sub choose_server {
my ($udom,$checkloginvia) = @_;	my ($udom,$checkloginvia,$required,$skiploadbal) = @_;
my %domconfhash = &Apache::loncommon::get_domainconf($udom);	my %domconfhash = &Apache::loncommon::get_domainconf($udom);
my %servers = &get_servers($udom);	my %servers = &get_servers($udom);
my $lowest_load = 30000;	my $lowest_load = 30000;
my ($login_host,$hostname,$portal_path,$isredirect);	my ($login_host,$hostname,$portal_path,$isredirect,$balancers);
	if ($skiploadbal) {
	($balancers,my $cached)=&is_cached_new('loadbalancing',$udom);
	unless (defined($cached)) {
	my $cachetime = 606024;
	my %domconfig =
	&Apache::lonnet::get_dom('configuration',['loadbalancing'],$udom);
	if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
	$balancers = &do_cache_new('loadbalancing',$udom,$domconfig{'loadbalancing'},
	$cachetime);
	}
	}
	}
foreach my $lonhost (keys(%servers)) {	foreach my $lonhost (keys(%servers)) {
	if ($skiploadbal) {
	if (ref($balancers) eq 'HASH') {
	next if (exists($balancers->{$lonhost}));
	}
	}
my $loginvia;	my $loginvia;
if ($checkloginvia) {	if ($checkloginvia) {
$loginvia = $domconfhash{$udom.'.login.loginvia_'.$lonhost};	$loginvia = $domconfhash{$udom.'.login.loginvia_'.$lonhost};
if ($loginvia) {	if ($loginvia) {
my ($server,$path) = split(/:/,$loginvia);	my ($server,$path) = split(/:/,$loginvia);
($login_host, $lowest_load) =	($login_host, $lowest_load) =
&compare_server_load($server, $login_host, $lowest_load);	&compare_server_load($server, $login_host, $lowest_load, $required);
if ($login_host eq $server) {	if ($login_host eq $server) {
$portal_path = $path;	$portal_path = $path;
$isredirect = 1;	$isredirect = 1;
}	}
} else {	} else {
($login_host, $lowest_load) =	($login_host, $lowest_load) =
&compare_server_load($lonhost, $login_host, $lowest_load);	&compare_server_load($lonhost, $login_host, $lowest_load, $required);
if ($login_host eq $lonhost) {	if ($login_host eq $lonhost) {
$portal_path = '';	$portal_path = '';
$isredirect = '';	$isredirect = '';
Line 976 sub choose_server {	Line 1072 sub choose_server {
}	}
} else {	} else {
($login_host, $lowest_load) =	($login_host, $lowest_load) =
&compare_server_load($lonhost, $login_host, $lowest_load);	&compare_server_load($lonhost, $login_host, $lowest_load, $required);
}	}
}	}
if ($login_host ne '') {	if ($login_host ne '') {
$hostname = &hostname($login_host);	$hostname = &hostname($login_host);
}	}
return ($login_host,$hostname,$portal_path,$isredirect);	return ($login_host,$hostname,$portal_path,$isredirect,$lowest_load);
}	}

# --------------------------------------------- Try to change a user's password	# --------------------------------------------- Try to change a user's password
Line 1149 sub can_host_session {	Line 1245 sub can_host_session {
sub spare_can_host {	sub spare_can_host {
my ($udom,$uint_dom,$remotesessions,$try_server)=@_;	my ($udom,$uint_dom,$remotesessions,$try_server)=@_;
my $canhost=1;	my $canhost=1;
my @intdoms;	my $try_server_hostname = &hostname($try_server);
my $internet_names = &Apache::lonnet::get_internet_names($try_server);	my $serverhomeID = &get_server_homeID($try_server_hostname);
if (ref($internet_names) eq 'ARRAY') {	my $serverhomedom = &host_domain($serverhomeID);
@intdoms = @{$internet_names};	my %defdomdefaults = &get_domain_defaults($serverhomedom);
}	if (ref($defdomdefaults{'offloadnow'}) eq 'HASH') {
unless (grep(/^\Q$uint_dom\E$/,@intdoms)) {	if ($defdomdefaults{'offloadnow'}{$try_server}) {
my $serverhomeID = &Apache::lonnet::get_server_homeID($try_server);	$canhost = 0;
my $serverhomedom = &Apache::lonnet::host_domain($serverhomeID);	}
my %defdomdefaults = &Apache::lonnet::get_domain_defaults($serverhomedom);	}
my $remoterev = &Apache::lonnet::get_server_loncaparev(undef,$try_server);	if (($canhost) && ($uint_dom)) {
$canhost = &can_host_session($udom,$try_server,$remoterev,	my @intdoms;
$remotesessions,	my $internet_names = &get_internet_names($try_server);
$defdomdefaults{'hostedsessions'});	if (ref($internet_names) eq 'ARRAY') {
	@intdoms = @{$internet_names};
	}
	unless (grep(/^\Q$uint_dom\E$/,@intdoms)) {
	my $remoterev = &get_server_loncaparev(undef,$try_server);
	$canhost = &can_host_session($udom,$try_server,$remoterev,
	$remotesessions,
	$defdomdefaults{'hostedsessions'});
	}
}	}
return $canhost;	return $canhost;
}	}
Line 1246 sub get_lonbalancer_config {	Line 1350 sub get_lonbalancer_config {
}	}

sub check_loadbalancing {	sub check_loadbalancing {
my ($uname,$udom) = @_;	my ($uname,$udom,$caller) = @_;
my ($is_balancer,$currtargets,$currrules,$dom_in_use,$homeintdom,	my ($is_balancer,$currtargets,$currrules,$dom_in_use,$homeintdom,
$rule_in_effect,$offloadto,$otherserver);	$rule_in_effect,$offloadto,$otherserver);
my $lonhost = $perlvar{'lonHostID'};	my $lonhost = $perlvar{'lonHostID'};
Line 1255 sub check_loadbalancing {	Line 1359 sub check_loadbalancing {
my $uintdom = &Apache::lonnet::internet_dom($uprimary_id);	my $uintdom = &Apache::lonnet::internet_dom($uprimary_id);
my $intdom = &Apache::lonnet::internet_dom($lonhost);	my $intdom = &Apache::lonnet::internet_dom($lonhost);
my $serverhomedom = &host_domain($lonhost);	my $serverhomedom = &host_domain($lonhost);
	my $domneedscache;
my $cachetime = 606024;	my $cachetime = 606024;

if (($uintdom ne '') && ($uintdom eq $intdom)) {	if (($uintdom ne '') && ($uintdom eq $intdom)) {
Line 1270 sub check_loadbalancing {	Line 1374 sub check_loadbalancing {
&Apache::lonnet::get_dom('configuration',['loadbalancing'],$dom_in_use);	&Apache::lonnet::get_dom('configuration',['loadbalancing'],$dom_in_use);
if (ref($domconfig{'loadbalancing'}) eq 'HASH') {	if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
$result = &do_cache_new('loadbalancing',$dom_in_use,$domconfig{'loadbalancing'},$cachetime);	$result = &do_cache_new('loadbalancing',$dom_in_use,$domconfig{'loadbalancing'},$cachetime);
	} else {
	$domneedscache = $dom_in_use;
}	}
}	}
if (ref($result) eq 'HASH') {	if (ref($result) eq 'HASH') {
Line 1323 sub check_loadbalancing {	Line 1429 sub check_loadbalancing {
}	}
}	}
} elsif (($homeintdom) && ($udom ne $serverhomedom)) {	} elsif (($homeintdom) && ($udom ne $serverhomedom)) {
my ($result,$cached)=&is_cached_new('loadbalancing',$serverhomedom);	($result,$cached)=&is_cached_new('loadbalancing',$serverhomedom);
unless (defined($cached)) {	unless (defined($cached)) {
my %domconfig =	my %domconfig =
&Apache::lonnet::get_dom('configuration',['loadbalancing'],$serverhomedom);	&Apache::lonnet::get_dom('configuration',['loadbalancing'],$serverhomedom);
if (ref($domconfig{'loadbalancing'}) eq 'HASH') {	if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
$result = &do_cache_new('loadbalancing',$dom_in_use,$domconfig{'loadbalancing'},$cachetime);	$result = &do_cache_new('loadbalancing',$serverhomedom,$domconfig{'loadbalancing'},$cachetime);
	} else {
	$domneedscache = $serverhomedom;
}	}
}	}
if (ref($result) eq 'HASH') {	if (ref($result) eq 'HASH') {
Line 1348 sub check_loadbalancing {	Line 1456 sub check_loadbalancing {
$is_balancer = 1;	$is_balancer = 1;
$offloadto = &this_host_spares($dom_in_use);	$offloadto = &this_host_spares($dom_in_use);
}	}
	unless (defined($cached)) {
	$domneedscache = $serverhomedom;
	}
}	}
} else {	} else {
if ($perlvar{'lonBalancer'} eq 'yes') {	if ($perlvar{'lonBalancer'} eq 'yes') {
$is_balancer = 1;	$is_balancer = 1;
$offloadto = &this_host_spares($dom_in_use);	$offloadto = &this_host_spares($dom_in_use);
}	}
	unless (defined($cached)) {
	$domneedscache = $serverhomedom;
	}
	}
	if ($domneedscache) {
	&do_cache_new('loadbalancing',$domneedscache,$is_balancer,$cachetime);
}	}
if ($is_balancer) {	if ($is_balancer) {
my $lowest_load = 30000;	my $lowest_load = 30000;
Line 1384 sub check_loadbalancing {	Line 1501 sub check_loadbalancing {
}	}
}	}
}	}
if (($otherserver ne '') && (grep(/^\Q$otherserver\E$/,@hosts))) {	unless ($caller eq 'login') {
$is_balancer = 0;	if (($otherserver ne '') && (grep(/^\Q$otherserver\E$/,@hosts))) {
if ($uname ne '' && $udom ne '') {	$is_balancer = 0;
if (($env{'user.name'} eq $uname) && ($env{'user.domain'} eq $udom)) {	if ($uname ne '' && $udom ne '') {
	if (($env{'user.name'} eq $uname) && ($env{'user.domain'} eq $udom)) {

&appenv({'user.loadbalexempt' => $lonhost,	&appenv({'user.loadbalexempt' => $lonhost,
'user.loadbalcheck.time' => time});	'user.loadbalcheck.time' => time});
	}
}	}
}	}
}	}
Line 1493 sub internet_dom_servers {	Line 1612 sub internet_dom_servers {
return %uniqservers;	return %uniqservers;
}	}

	sub trusted_domains {
	my ($cmdtype,$calldom) = @_;
	my ($trusted,$untrusted);
	if (&domain($calldom) eq '') {
	return ($trusted,$untrusted);
	}
	unless ($cmdtype =~ /^(content\|shared\|enroll\|coaurem\|domroles\|catalog\|reqcrs\|msg)$/) {
	return ($trusted,$untrusted);
	}
	my $callprimary = &domain($calldom,'primary');
	my $intcalldom = &Apache::lonnet::internet_dom($callprimary);
	if ($intcalldom eq '') {
	return ($trusted,$untrusted);
	}

	my ($trustconfig,$cached)=&Apache::lonnet::is_cached_new('trust',$calldom);
	unless (defined($cached)) {
	my %domconfig = &Apache::lonnet::get_dom('configuration',['trust'],$calldom);
	&Apache::lonnet::do_cache_new('trust',$calldom,$domconfig{'trust'},3600);
	$trustconfig = $domconfig{'trust'};
	}
	if (ref($trustconfig)) {
	my (%possexc,%possinc,@allexc,@allinc);
	if (ref($trustconfig->{$cmdtype}) eq 'HASH') {
	if (ref($trustconfig->{$cmdtype}->{'exc'}) eq 'ARRAY') {
	map { $possexc{$_} = 1; } @{$trustconfig->{$cmdtype}->{'exc'}};
	}
	if (ref($trustconfig->{$cmdtype}->{'inc'}) eq 'ARRAY') {
	map { $possinc{$_} = 1; } @{$trustconfig->{$cmdtype}->{'inc'}};
	}
	}
	if (keys(%possexc)) {
	if (keys(%possinc)) {
	foreach my $key (sort(keys(%possexc))) {
	next if ($key eq $intcalldom);
	unless ($possinc{$key}) {
	push(@allexc,$key);
	}
	}
	} else {
	@allexc = sort(keys(%possexc));
	}
	}
	if (keys(%possinc)) {
	$possinc{$intcalldom} = 1;
	@allinc = sort(keys(%possinc));
	}
	if ((@allexc > 0) \|\| (@allinc > 0)) {
	my %doms_by_intdom;
	my %allintdoms = &all_host_intdom();
	my %alldoms = &all_host_domain();
	foreach my $key (%allintdoms) {
	if (ref($doms_by_intdom{$allintdoms{$key}}) eq 'ARRAY') {
	unless (grep(/^\Q$alldoms{$key}\E$/,@{$doms_by_intdom{$allintdoms{$key}}})) {
	push(@{$doms_by_intdom{$allintdoms{$key}}},$alldoms{$key});
	}
	} else {
	$doms_by_intdom{$allintdoms{$key}} = [$alldoms{$key}];
	}
	}
	foreach my $exc (@allexc) {
	if (ref($doms_by_intdom{$exc}) eq 'ARRAY') {
	$untrusted = $doms_by_intdom{$exc};
	}
	}
	foreach my $inc (@allinc) {
	if (ref($doms_by_intdom{$inc}) eq 'ARRAY') {
	$trusted = $doms_by_intdom{$inc};
	}
	}
	}
	}
	return ($trusted,$untrusted);
	}

	sub will_trust {
	my ($cmdtype,$domain,$possdom) = @_;
	return 1 if ($domain eq $possdom);
	my ($trustedref,$untrustedref) = &trusted_domains($cmdtype,$possdom);
	my $willtrust;
	if ((ref($trustedref) eq 'ARRAY') && (@{$trustedref} > 0)) {
	if (grep(/^\Q$domain\E$/,@{$trustedref})) {
	$willtrust = 1;
	}
	} elsif ((ref($untrustedref) eq 'ARRAY') && (@{$untrustedref} > 0)) {
	unless (grep(/^\Q$domain\E$/,@{$untrustedref})) {
	$willtrust = 1;
	}
	} else {
	$willtrust = 1;
	}
	return $willtrust;
	}

# ---------------------- Find the homebase for a user from domain's lib servers	# ---------------------- Find the homebase for a user from domain's lib servers

my %homecache;	my %homecache;
Line 1518 sub homeserver {	Line 1731 sub homeserver {
return 'no_host';	return 'no_host';
}	}

# ------------------------------------- Find the usernames behind a list of IDs	# ----- Find the usernames behind a list of student/employee IDs or clicker IDs

sub idget {	sub idget {
my ($udom,@ids)=@_;	my ($udom,$idsref,$namespace)=@_;
my %returnhash=();	my %returnhash=();
	my @ids=();
	if (ref($idsref) eq 'ARRAY') {
	@ids = @{$idsref};
	} else {
	return %returnhash;
	}
	if ($namespace eq '') {
	$namespace = 'ids';
	}

my %servers = &get_servers($udom,'library');	my %servers = &get_servers($udom,'library');
foreach my $tryserver (keys(%servers)) {	foreach my $tryserver (keys(%servers)) {
my $idlist=join('&',@ids);	my $idlist=join('&', map { &escape($_); } @ids);
$idlist=~tr/A-Z/a-z/;	if ($namespace eq 'ids') {
my $reply=&reply("idget:$udom:".$idlist,$tryserver);	$idlist=~tr/A-Z/a-z/;
	}
	my $reply;
	if ($namespace eq 'ids') {
	$reply=&reply("idget:$udom:".$idlist,$tryserver);
	} else {
	$reply=&reply("getdom:$udom:$namespace:$idlist",$tryserver);
	}
my @answer=();	my @answer=();
if (($reply ne 'con_lost') && ($reply!~/^error\:/)) {	if (($reply ne 'con_lost') && ($reply!~/^error\:/)) {
@answer=split(/\&/,$reply);	@answer=split(/\&/,$reply);
Line 1536 sub idget {	Line 1765 sub idget {
my $i;	my $i;
for ($i=0;$i<=$#ids;$i++) {	for ($i=0;$i<=$#ids;$i++) {
if ($answer[$i]) {	if ($answer[$i]) {
$returnhash{$ids[$i]}=$answer[$i];	$returnhash{$ids[$i]}=&unescape($answer[$i]);
}	}
}	}
}	}
return %returnhash;	return %returnhash;
}	}

Line 1554 sub idrget {	Line 1783 sub idrget {
return %returnhash;	return %returnhash;
}	}

# ------------------------------- Store away a list of names and associated IDs	# Store away a list of names and associated student/employee IDs or clicker IDs

sub idput {	sub idput {
my ($udom,%ids)=@_;	my ($udom,$idsref,$uhom,$namespace)=@_;
my %servers=();	my %servers=();
	my %ids=();
	my %byid = ();
	if (ref($idsref) eq 'HASH') {
	%ids=%{$idsref};
	}
	if ($namespace eq '') {
	$namespace = 'ids';
	}
foreach my $uname (keys(%ids)) {	foreach my $uname (keys(%ids)) {
&cput('environment',{'id'=>$ids{$uname}},$udom,$uname);	&cput('environment',{'id'=>$ids{$uname}},$udom,$uname);
my $uhom=&homeserver($uname,$udom);	if ($uhom eq '') {
	$uhom=&homeserver($uname,$udom);
	}
if ($uhom ne 'no_host') {	if ($uhom ne 'no_host') {
my $id=&escape($ids{$uname});
$id=~tr/A-Z/a-z/;
my $esc_unam=&escape($uname);	my $esc_unam=&escape($uname);
if ($servers{$uhom}) {	if ($namespace eq 'ids') {
$servers{$uhom}.='&'.$id.'='.$esc_unam;	my $id=&escape($ids{$uname});
	$id=~tr/A-Z/a-z/;
	my $esc_unam=&escape($uname);
	$servers{$uhom}.=$id.'='.$esc_unam.'&';
} else {	} else {
$servers{$uhom}=$id.'='.$esc_unam;	my @currids = split(/,/,$ids{$uname});
	foreach my $id (@currids) {
	$byid{$uhom}{$id} .= $uname.',';
	}
	}
	}
	}
	if ($namespace eq 'clickers') {
	foreach my $server (keys(%byid)) {
	if (ref($byid{$server}) eq 'HASH') {
	foreach my $id (keys(%{$byid{$server}})) {
	$byid{$server} =~ s/,$//;
	$servers{$uhom}.=&escape($id).'='.&escape($byid{$server}).'&';
	}
	}
	}
	}
	foreach my $server (keys(%servers)) {
	$servers{$server} =~ s/\&$//;
	if ($namespace eq 'ids') {
	&critical('idput:'.$udom.':'.$servers{$server},$server);
	} else {
	&critical('updateclickers:'.$udom.':add:'.$servers{$server},$server);
	}
	}
	}

	# ------------- Delete unwanted student/employee IDs or clicker IDs from domain

	sub iddel {
	my ($udom,$idshashref,$uhome,$namespace)=@_;
	my %result=();
	my %ids=();
	my %byid = ();
	if (ref($idshashref) eq 'HASH') {
	%ids=%{$idshashref};
	} else {
	return %result;
	}
	if ($namespace eq '') {
	$namespace = 'ids';
	}
	my %servers=();
	while (my ($id,$unamestr) = each(%ids)) {
	if ($namespace eq 'ids') {
	my $uhom = $uhome;
	if ($uhom eq '') {
	$uhom=&homeserver($unamestr,$udom);
	}
	if ($uhom ne 'no_host') {
	$servers{$uhom}.='&'.&escape($id);
	}
	} else {
	my @curritems = split(/,/,$ids{$id});
	foreach my $uname (@curritems) {
	my $uhom = $uhome;
	if ($uhom eq '') {
	$uhom=&homeserver($uname,$udom);
	}
	if ($uhom ne 'no_host') {
	$byid{$uhom}{$id} .= $uname.',';
	}
	}
	}
	}
	if ($namespace eq 'clickers') {
	foreach my $server (keys(%byid)) {
	if (ref($byid{$server}) eq 'HASH') {
	foreach my $id (keys(%{$byid{$server}})) {
	$byid{$server}{$id} =~ s/,$//;
	$servers{$server}.=&escape($id).'='.&escape($byid{$server}{$id}).'&';
	}
}	}
}	}
}	}
foreach my $server (keys(%servers)) {	foreach my $server (keys(%servers)) {
&critical('idput:'.$udom.':'.$servers{$server},$server);	$servers{$server} =~ s/\&$//;
	if ($namespace eq 'ids') {
	$result{$server} = &critical('iddel:'.$udom.':'.$servers{$server},$uhome);
	} elsif ($namespace eq 'clickers') {
	$result{$server} = &critical('updateclickers:'.$udom.':del:'.$servers{$server},$server);
	}
	}
	return %result;
	}

	# ----- Update clicker ID-to-username look-ups in clickers.db on library server

	sub updateclickers {
	my ($udom,$action,$idshashref,$uhome,$critical) = @_;
	my %clickers;
	if (ref($idshashref) eq 'HASH') {
	%clickers=%{$idshashref};
	} else {
	return;
	}
	my $items='';
	foreach my $item (keys(%clickers)) {
	$items.=&escape($item).'='.&escape($clickers{$item}).'&';
	}
	$items=~s/\&$//;
	my $request = "updateclickers:$udom:$action:$items";
	if ($critical) {
	return &critical($request,$uhome);
	} else {
	return &reply($request,$uhome);
}	}
}	}

Line 1593 sub dump_dom {	Line 1933 sub dump_dom {

sub get_dom {	sub get_dom {
my ($namespace,$storearr,$udom,$uhome)=@_;	my ($namespace,$storearr,$udom,$uhome)=@_;
	return if ($udom eq 'public');
my $items='';	my $items='';
foreach my $item (@$storearr) {	foreach my $item (@$storearr) {
$items.=&escape($item).'&';	$items.=&escape($item).'&';
Line 1600 sub get_dom {	Line 1941 sub get_dom {
$items=~s/\&$//;	$items=~s/\&$//;
if (!$udom) {	if (!$udom) {
$udom=$env{'user.domain'};	$udom=$env{'user.domain'};
	return if ($udom eq 'public');
if (defined(&domain($udom,'primary'))) {	if (defined(&domain($udom,'primary'))) {
$uhome=&domain($udom,'primary');	$uhome=&domain($udom,'primary');
} else {	} else {
Line 1613 sub get_dom {	Line 1955 sub get_dom {
}	}
}	}
if ($udom && $uhome && ($uhome ne 'no_host')) {	if ($udom && $uhome && ($uhome ne 'no_host')) {
my $rep=&reply("getdom:$udom:$namespace:$items",$uhome);	my $rep;
	if ($namespace =~ /^enc/) {
	$rep=&reply("encrypt:egetdom:$udom:$namespace:$items",$uhome);
	} else {
	$rep=&reply("getdom:$udom:$namespace:$items",$uhome);
	}
my %returnhash;	my %returnhash;
if ($rep eq '' \|\| $rep =~ /^error: 2 /) {	if ($rep eq '' \|\| $rep =~ /^error: 2 /) {
return %returnhash;	return %returnhash;
Line 1657 sub put_dom {	Line 2004 sub put_dom {
$items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';	$items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
}	}
$items=~s/\&$//;	$items=~s/\&$//;
return &reply("putdom:$udom:$namespace:$items",$uhome);	if ($namespace =~ /^enc/) {
	return &reply("encrypt:putdom:$udom:$namespace:$items",$uhome);
	} else {
	return &reply("putdom:$udom:$namespace:$items",$uhome);
	}
} else {	} else {
&logthis("put_dom failed - no homeserver and/or domain");	&logthis("put_dom failed - no homeserver and/or domain");
}	}
Line 1703 sub retrieve_inst_usertypes {	Line 2054 sub retrieve_inst_usertypes {
my %domdefs = &Apache::lonnet::get_domain_defaults($udom);	my %domdefs = &Apache::lonnet::get_domain_defaults($udom);
if ((ref($domdefs{'inststatustypes'}) eq 'HASH') &&	if ((ref($domdefs{'inststatustypes'}) eq 'HASH') &&
(ref($domdefs{'inststatusorder'}) eq 'ARRAY')) {	(ref($domdefs{'inststatusorder'}) eq 'ARRAY')) {
%returnhash = %{$domdefs{'inststatustypes'}};	return ($domdefs{'inststatustypes'},$domdefs{'inststatusorder'});
@order = @{$domdefs{'inststatusorder'}};
} else {	} else {
if (defined(&domain($udom,'primary'))) {	if (defined(&domain($udom,'primary'))) {
my $uhome=&domain($udom,'primary');	my $uhome=&domain($udom,'primary');
my $rep=&reply("inst_usertypes:$udom",$uhome);	my $rep=&reply("inst_usertypes:$udom",$uhome);
if ($rep =~ /^(con_lost\|error\|no_such_host\|refused)/) {	if ($rep =~ /^(con_lost\|error\|no_such_host\|refused)/) {
&logthis("get_dom failed - $rep returned from $uhome in domain: $udom");	&logthis("retrieve_inst_usertypes failed - $rep returned from $uhome in domain: $udom");
return (\%returnhash,\@order);	return (\%returnhash,\@order);
}	}
my ($hashitems,$orderitems) = split(/:/,$rep);	my ($hashitems,$orderitems) = split(/:/,$rep);
Line 1726 sub retrieve_inst_usertypes {	Line 2076 sub retrieve_inst_usertypes {
push(@order,&unescape($item));	push(@order,&unescape($item));
}	}
} else {	} else {
&logthis("get_dom failed - no primary domain server for $udom");	&logthis("retrieve_inst_usertypes failed - no primary domain server for $udom");
}	}
	return (\%returnhash,\@order);
}	}
return (\%returnhash,\@order);
}	}

sub is_domainimage {	sub is_domainimage {
my ($url) = @_;	my ($url) = @_;
if ($url=~m-^/+res/+($match_domain)/+\1\-domainconfig/+(img\|logo\|domlogo)/+-) {	if ($url=~m-^/+res/+($match_domain)/+\1\-domainconfig/+(img\|logo\|domlogo)/+[^/]-) {
if (&domain($1) ne '') {	if (&domain($1) ne '') {
return '1';	return '1';
}	}
Line 1749 sub inst_directory_query {	Line 2099 sub inst_directory_query {
my $homeserver = &domain($udom,'primary');	my $homeserver = &domain($udom,'primary');
my $outcome;	my $outcome;
if ($homeserver ne '') {	if ($homeserver ne '') {
	unless ($homeserver eq $perlvar{'lonHostID'}) {
	if ($srch->{'srchby'} eq 'email') {
	my $lcrev = &get_server_loncaparev(undef,$homeserver);
	my ($major,$minor) = ($lcrev =~ /^\'?(\d+)\.(\d+)\.[\w.\-]+\'?$/);
	if (($major eq '' && $minor eq '') \|\| ($major < 2) \|\|
	(($major == 2) && ($minor < 12))) {
	return;
	}
	}
	}
my $queryid=&reply("querysend:instdirsearch:".	my $queryid=&reply("querysend:instdirsearch:".
&escape($srch->{'srchby'}).':'.	&escape($srch->{'srchby'}).':'.
&escape($srch->{'srchterm'}).':'.	&escape($srch->{'srchterm'}).':'.
&escape($srch->{'srchtype'}),$homeserver);	&escape($srch->{'srchtype'}),$homeserver);
my $host=&hostname($homeserver);	my $host=&hostname($homeserver);
if ($queryid !~/^\Q$host\E\_/) {	if ($queryid !~/^\Q$host\E\_/) {
&logthis('instituional directory search invalid queryid: '.$queryid.' for host: '.$homeserver.'in domain '.$udom);	&logthis('institutional directory search invalid queryid: '.$queryid.' for host: '.$homeserver.' in domain '.$udom);
return;	return;
}	}
my $response = &get_query_reply($queryid);	my $response = &get_query_reply($queryid);
Line 1790 sub usersearch {	Line 2150 sub usersearch {
my $query = 'usersearch';	my $query = 'usersearch';
foreach my $tryserver (keys(%libserv)) {	foreach my $tryserver (keys(%libserv)) {
if (&host_domain($tryserver) eq $dom) {	if (&host_domain($tryserver) eq $dom) {
	unless ($tryserver eq $perlvar{'lonHostID'}) {
	if ($srch->{'srchby'} eq 'email') {
	my $lcrev = &get_server_loncaparev(undef,$tryserver);
	my ($major,$minor) = ($lcrev =~ /^\'?(\d+)\.(\d+)\.[\w.\-]+\'?$/);
	next if (($major eq '' && $minor eq '') \|\| ($major < 2) \|\|
	(($major == 2) && ($minor < 12)));
	}
	}
my $host=&hostname($tryserver);	my $host=&hostname($tryserver);
my $queryid=	my $queryid=
&reply("querysend:".&escape($query).':'.	&reply("querysend:".&escape($query).':'.
Line 1875 sub get_instuser {	Line 2243 sub get_instuser {
return ($outcome,%userinfo);	return ($outcome,%userinfo);
}	}

	sub get_multiple_instusers {
	my ($udom,$users,$caller) = @_;
	my ($outcome,$results);
	if (ref($users) eq 'HASH') {
	my $count = keys(%{$users});
	my $requested = &freeze_escape($users);
	my $homeserver = &domain($udom,'primary');
	if ($homeserver ne '') {
	my $queryid=&reply('querysend:getmultinstusers:::'.$caller.'='.$requested,$homeserver);
	my $host=&hostname($homeserver);
	if ($queryid !~/^\Q$host\E\_/) {
	&logthis('get_multiple_instusers invalid queryid: '.$queryid.
	' for host: '.$homeserver.'in domain '.$udom);
	return ($outcome,$results);
	}
	my $response = &get_query_reply($queryid);
	my $maxtries = 5;
	if ($count > 100) {
	$maxtries = 1+int($count/20);
	}
	my $tries = 1;
	while (($response=~/^timeout/) && ($tries <= $maxtries)) {
	$response = &get_query_reply($queryid);
	$tries ++;
	}
	if ($response eq '') {
	$results = {};
	foreach my $key (keys(%{$users})) {
	my ($uname,$id);
	if ($caller eq 'id') {
	$id = $key;
	} else {
	$uname = $key;
	}
	my ($resp,%info) = &get_instuser($udom,$uname,$id);
	$outcome = $resp;
	if ($resp eq 'ok') {
	%{$results} = (%{$results}, %info);
	} else {
	last;
	}
	}
	} elsif(!&error($response) && ($response ne 'refused')) {
	if (($response eq 'unavailable') \|\| ($response eq 'invalid') \|\| ($response eq 'timeout')) {
	$outcome = $response;
	} else {
	($outcome,my $userdata) = split(/=/,$response,2);
	if ($outcome eq 'ok') {
	$results = &thaw_unescape($userdata);
	}
	}
	}
	}
	}
	return ($outcome,$results);
	}

sub inst_rulecheck {	sub inst_rulecheck {
my ($udom,$uname,$id,$item,$rules) = @_;	my ($udom,$uname,$id,$item,$rules) = @_;
my %returnhash;	my %returnhash;
Line 1954 sub inst_userrules {	Line 2379 sub inst_userrules {
# ------------- Get Authentication, Language and User Tools Defaults for Domain	# ------------- Get Authentication, Language and User Tools Defaults for Domain

sub get_domain_defaults {	sub get_domain_defaults {
my ($domain) = @_;	my ($domain,$ignore_cache) = @_;
	return if (($domain eq '') \|\| ($domain eq 'public'));
my $cachetime = 606024;	my $cachetime = 606024;
my ($result,$cached)=&is_cached_new('domdefaults',$domain);	unless ($ignore_cache) {
if (defined($cached)) {	my ($result,$cached)=&is_cached_new('domdefaults',$domain);
if (ref($result) eq 'HASH') {	if (defined($cached)) {
return %{$result};	if (ref($result) eq 'HASH') {
	return %{$result};
	}
}	}
}	}
my %domdefaults;	my %domdefaults;
Line 1967 sub get_domain_defaults {	Line 2395 sub get_domain_defaults {
&Apache::lonnet::get_dom('configuration',['defaults','quotas',	&Apache::lonnet::get_dom('configuration',['defaults','quotas',
'requestcourses','inststatus',	'requestcourses','inststatus',
'coursedefaults','usersessions',	'coursedefaults','usersessions',
'requestauthor'],$domain);	'requestauthor','selfenrollment',
	'coursecategories','ssl','autoenroll',
	'trust','helpsettings'],$domain);
	my @coursetypes = ('official','unofficial','community','textbook','placement');
if (ref($domconfig{'defaults'}) eq 'HASH') {	if (ref($domconfig{'defaults'}) eq 'HASH') {
$domdefaults{'lang_def'} = $domconfig{'defaults'}{'lang_def'};	$domdefaults{'lang_def'} = $domconfig{'defaults'}{'lang_def'};
$domdefaults{'auth_def'} = $domconfig{'defaults'}{'auth_def'};	$domdefaults{'auth_def'} = $domconfig{'defaults'}{'auth_def'};
Line 1975 sub get_domain_defaults {	Line 2406 sub get_domain_defaults {
$domdefaults{'timezone_def'} = $domconfig{'defaults'}{'timezone_def'};	$domdefaults{'timezone_def'} = $domconfig{'defaults'}{'timezone_def'};
$domdefaults{'datelocale_def'} = $domconfig{'defaults'}{'datelocale_def'};	$domdefaults{'datelocale_def'} = $domconfig{'defaults'}{'datelocale_def'};
$domdefaults{'portal_def'} = $domconfig{'defaults'}{'portal_def'};	$domdefaults{'portal_def'} = $domconfig{'defaults'}{'portal_def'};
	$domdefaults{'intauth_cost'} = $domconfig{'defaults'}{'intauth_cost'};
	$domdefaults{'intauth_switch'} = $domconfig{'defaults'}{'intauth_switch'};
	$domdefaults{'intauth_check'} = $domconfig{'defaults'}{'intauth_check'};
} else {	} else {
$domdefaults{'lang_def'} = &domain($domain,'lang_def');	$domdefaults{'lang_def'} = &domain($domain,'lang_def');
$domdefaults{'auth_def'} = &domain($domain,'auth_def');	$domdefaults{'auth_def'} = &domain($domain,'auth_def');
Line 1985 sub get_domain_defaults {	Line 2419 sub get_domain_defaults {
$domdefaults{'defaultquota'} = $domconfig{'quotas'}{'defaultquota'};	$domdefaults{'defaultquota'} = $domconfig{'quotas'}{'defaultquota'};
} else {	} else {
$domdefaults{'defaultquota'} = $domconfig{'quotas'};	$domdefaults{'defaultquota'} = $domconfig{'quotas'};
}	}
my @usertools = ('aboutme','blog','webdav','portfolio');	my @usertools = ('aboutme','blog','webdav','portfolio');
foreach my $item (@usertools) {	foreach my $item (@usertools) {
if (ref($domconfig{'quotas'}{$item}) eq 'HASH') {	if (ref($domconfig{'quotas'}{$item}) eq 'HASH') {
$domdefaults{$item} = $domconfig{'quotas'}{$item};	$domdefaults{$item} = $domconfig{'quotas'}{$item};
}	}
}	}
	if (ref($domconfig{'quotas'}{'authorquota'}) eq 'HASH') {
	$domdefaults{'authorquota'} = $domconfig{'quotas'}{'authorquota'};
	}
}	}
if (ref($domconfig{'requestcourses'}) eq 'HASH') {	if (ref($domconfig{'requestcourses'}) eq 'HASH') {
foreach my $item ('official','unofficial','community') {	foreach my $item ('official','unofficial','community','textbook','placement') {
$domdefaults{$item} = $domconfig{'requestcourses'}{$item};	$domdefaults{$item} = $domconfig{'requestcourses'}{$item};
}	}
}	}
Line 2002 sub get_domain_defaults {	Line 2439 sub get_domain_defaults {
$domdefaults{'requestauthor'} = $domconfig{'requestauthor'};	$domdefaults{'requestauthor'} = $domconfig{'requestauthor'};
}	}
if (ref($domconfig{'inststatus'}) eq 'HASH') {	if (ref($domconfig{'inststatus'}) eq 'HASH') {
foreach my $item ('inststatustypes','inststatusorder') {	foreach my $item ('inststatustypes','inststatusorder','inststatusguest') {
$domdefaults{$item} = $domconfig{'inststatus'}{$item};	$domdefaults{$item} = $domconfig{'inststatus'}{$item};
}	}
}	}
if (ref($domconfig{'coursedefaults'}) eq 'HASH') {	if (ref($domconfig{'coursedefaults'}) eq 'HASH') {
foreach my $item ('canuse_pdfforms') {	$domdefaults{'canuse_pdfforms'} = $domconfig{'coursedefaults'}{'canuse_pdfforms'};
$domdefaults{$item} = $domconfig{'coursedefaults'}{$item};	$domdefaults{'usejsme'} = $domconfig{'coursedefaults'}{'usejsme'};
	$domdefaults{'uselcmath'} = $domconfig{'coursedefaults'}{'uselcmath'};
	if (ref($domconfig{'coursedefaults'}{'postsubmit'}) eq 'HASH') {
	$domdefaults{'postsubmit'} = $domconfig{'coursedefaults'}{'postsubmit'}{'client'};
}	}
	foreach my $type (@coursetypes) {
	if (ref($domconfig{'coursedefaults'}{'coursecredits'}) eq 'HASH') {
	unless ($type eq 'community') {
	$domdefaults{$type.'credits'} = $domconfig{'coursedefaults'}{'coursecredits'}{$type};
	}
	}
	if (ref($domconfig{'coursedefaults'}{'uploadquota'}) eq 'HASH') {
	$domdefaults{$type.'quota'} = $domconfig{'coursedefaults'}{'uploadquota'}{$type};
	}
	if ($domdefaults{'postsubmit'} eq 'on') {
	if (ref($domconfig{'coursedefaults'}{'postsubmit'}{'timeout'}) eq 'HASH') {
	$domdefaults{$type.'postsubtimeout'} =
	$domconfig{'coursedefaults'}{'postsubmit'}{'timeout'}{$type};
	}
	}
	}
	if (ref($domconfig{'coursedefaults'}{'canclone'}) eq 'HASH') {
	if (ref($domconfig{'coursedefaults'}{'canclone'}{'instcode'}) eq 'ARRAY') {
	my @clonecodes = @{$domconfig{'coursedefaults'}{'canclone'}{'instcode'}};
	if (@clonecodes) {
	$domdefaults{'canclone'} = join('+',@clonecodes);
	}
	}
	} elsif ($domconfig{'coursedefaults'}{'canclone'}) {
	$domdefaults{'canclone'}=$domconfig{'coursedefaults'}{'canclone'};
	}
	if ($domconfig{'coursedefaults'}{'texengine'}) {
	$domdefaults{'texengine'} = $domconfig{'coursedefaults'}{'texengine'};
	}
}	}
if (ref($domconfig{'usersessions'}) eq 'HASH') {	if (ref($domconfig{'usersessions'}) eq 'HASH') {
if (ref($domconfig{'usersessions'}{'remote'}) eq 'HASH') {	if (ref($domconfig{'usersessions'}{'remote'}) eq 'HASH') {
Line 2018 sub get_domain_defaults {	Line 2487 sub get_domain_defaults {
if (ref($domconfig{'usersessions'}{'hosted'}) eq 'HASH') {	if (ref($domconfig{'usersessions'}{'hosted'}) eq 'HASH') {
$domdefaults{'hostedsessions'} = $domconfig{'usersessions'}{'hosted'};	$domdefaults{'hostedsessions'} = $domconfig{'usersessions'}{'hosted'};
}	}
	if (ref($domconfig{'usersessions'}{'offloadnow'}) eq 'HASH') {
	$domdefaults{'offloadnow'} = $domconfig{'usersessions'}{'offloadnow'};
	}
	}
	if (ref($domconfig{'selfenrollment'}) eq 'HASH') {
	if (ref($domconfig{'selfenrollment'}{'admin'}) eq 'HASH') {
	my @settings = ('types','registered','enroll_dates','access_dates','section',
	'approval','limit');
	foreach my $type (@coursetypes) {
	if (ref($domconfig{'selfenrollment'}{'admin'}{$type}) eq 'HASH') {
	my @mgrdc = ();
	foreach my $item (@settings) {
	if ($domconfig{'selfenrollment'}{'admin'}{$type}{$item} eq '0') {
	push(@mgrdc,$item);
	}
	}
	if (@mgrdc) {
	$domdefaults{$type.'selfenrolladmdc'} = join(',',@mgrdc);
	}
	}
	}
	}
	if (ref($domconfig{'selfenrollment'}{'default'}) eq 'HASH') {
	foreach my $type (@coursetypes) {
	if (ref($domconfig{'selfenrollment'}{'default'}{$type}) eq 'HASH') {
	foreach my $item (keys(%{$domconfig{'selfenrollment'}{'default'}{$type}})) {
	$domdefaults{$type.'selfenroll'.$item} = $domconfig{'selfenrollment'}{'default'}{$type}{$item};
	}
	}
	}
	}
	}
	if (ref($domconfig{'coursecategories'}) eq 'HASH') {
	$domdefaults{'catauth'} = 'std';
	$domdefaults{'catunauth'} = 'std';
	if ($domconfig{'coursecategories'}{'auth'}) {
	$domdefaults{'catauth'} = $domconfig{'coursecategories'}{'auth'};
	}
	if ($domconfig{'coursecategories'}{'unauth'}) {
	$domdefaults{'catunauth'} = $domconfig{'coursecategories'}{'unauth'};
	}
	}
	if (ref($domconfig{'ssl'}) eq 'HASH') {
	if (ref($domconfig{'ssl'}{'replication'}) eq 'HASH') {
	$domdefaults{'replication'} = $domconfig{'ssl'}{'replication'};
	}
	if (ref($domconfig{'ssl'}{'connto'}) eq 'HASH') {
	$domdefaults{'connect'} = $domconfig{'ssl'}{'connto'};
	}
	if (ref($domconfig{'ssl'}{'connfrom'}) eq 'HASH') {
	$domdefaults{'connect'} = $domconfig{'ssl'}{'connfrom'};
	}
}	}
&Apache::lonnet::do_cache_new('domdefaults',$domain,\%domdefaults,	if (ref($domconfig{'trust'}) eq 'HASH') {
$cachetime);	my @prefixes = qw(content shared enroll othcoau coaurem domroles catalog reqcrs msg);
	foreach my $prefix (@prefixes) {
	if (ref($domconfig{'trust'}{$prefix}) eq 'HASH') {
	$domdefaults{'trust'.$prefix} = $domconfig{'trust'}{$prefix};
	}
	}
	}
	if (ref($domconfig{'autoenroll'}) eq 'HASH') {
	$domdefaults{'autofailsafe'} = $domconfig{'autoenroll'}{'autofailsafe'};
	}
	if (ref($domconfig{'helpsettings'}) eq 'HASH') {
	$domdefaults{'submitbugs'} = $domconfig{'helpsettings'}{'submitbugs'};
	if (ref($domconfig{'helpsettings'}{'adhoc'}) eq 'HASH') {
	$domdefaults{'adhocroles'} = $domconfig{'helpsettings'}{'adhoc'};
	}
	}
	&do_cache_new('domdefaults',$domain,\%domdefaults,$cachetime);
return %domdefaults;	return %domdefaults;
}	}

	sub course_portal_url {
	my ($cnum,$cdom) = @_;
	my $chome = &homeserver($cnum,$cdom);
	my $hostname = &hostname($chome);
	my $protocol = $protocol{$chome};
	$protocol = 'http' if ($protocol ne 'https');
	my %domdefaults = &get_domain_defaults($cdom);
	my $firsturl;
	if ($domdefaults{'portal_def'}) {
	$firsturl = $domdefaults{'portal_def'};
	} else {
	$firsturl = $protocol.'://'.$hostname;
	}
	return $firsturl;
	}

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

sub assign_access_key {	sub assign_access_key {
Line 2260 sub make_key {	Line 2813 sub make_key {
sub devalidate_cache_new {	sub devalidate_cache_new {
my ($name,$id,$debug) = @_;	my ($name,$id,$debug) = @_;
if ($debug) { &Apache::lonnet::logthis("deleting $name:$id"); }	if ($debug) { &Apache::lonnet::logthis("deleting $name:$id"); }
	my $remembered_id=$name.':'.$id;
$id=&make_key($name,$id);	$id=&make_key($name,$id);
$memcache->delete($id);	$memcache->delete($id);
delete($remembered{$id});	delete($remembered{$remembered_id});
delete($accessed{$id});	delete($accessed{$remembered_id});
}	}

sub is_cached_new {	sub is_cached_new {
my ($name,$id,$debug) = @_;	my ($name,$id,$debug) = @_;
$id=&make_key($name,$id);	my $remembered_id=$name.':'.$id; # this is to avoid make_key (which is slow) whenever possible
if (exists($remembered{$id})) {	if (exists($remembered{$remembered_id})) {
if ($debug) { &Apache::lonnet::logthis("Early return $id of $remembered{$id} "); }	if ($debug) { &Apache::lonnet::logthis("Early return $remembered_id of $remembered{$remembered_id} "); }
$accessed{$id}=[&gettimeofday()];	$accessed{$remembered_id}=[&gettimeofday()];
$hits++;	$hits++;
return ($remembered{$id},1);	return ($remembered{$remembered_id},1);
}	}
	$id=&make_key($name,$id);
my $value = $memcache->get($id);	my $value = $memcache->get($id);
if (!(defined($value))) {	if (!(defined($value))) {
if ($debug) { &Apache::lonnet::logthis("getting $id is not defined"); }	if ($debug) { &Apache::lonnet::logthis("getting $id is not defined"); }
Line 2284 sub is_cached_new {	Line 2839 sub is_cached_new {
if ($debug) { &Apache::lonnet::logthis("getting $id is __undef__"); }	if ($debug) { &Apache::lonnet::logthis("getting $id is __undef__"); }
$value=undef;	$value=undef;
}	}
&make_room($id,$value,$debug);	&make_room($remembered_id,$value,$debug);
if ($debug) { &Apache::lonnet::logthis("getting $id is $value"); }	if ($debug) { &Apache::lonnet::logthis("getting $id is $value"); }
return ($value,1);	return ($value,1);
}	}

sub do_cache_new {	sub do_cache_new {
my ($name,$id,$value,$time,$debug) = @_;	my ($name,$id,$value,$time,$debug) = @_;
	my $remembered_id=$name.':'.$id;
$id=&make_key($name,$id);	$id=&make_key($name,$id);
my $setvalue=$value;	my $setvalue=$value;
if (!defined($setvalue)) {	if (!defined($setvalue)) {
Line 2306 sub do_cache_new {	Line 2862 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($remembered_id,$value,$debug);
return $value;	return $value;
}	}

sub make_room {	sub make_room {
my ($id,$value,$debug)=@_;	my ($remembered_id,$value,$debug)=@_;

$remembered{$id}= (ref($value)) ? &Storable::dclone($value)	$remembered{$remembered_id}= (ref($value)) ? &Storable::dclone($value)
: $value;	: $value;
if ($to_remember<0) { return; }	if ($to_remember<0) { return; }
$accessed{$id}=[&gettimeofday()];	$accessed{$remembered_id}=[&gettimeofday()];
if (scalar(keys(%remembered)) <= $to_remember) { return; }	if (scalar(keys(%remembered)) <= $to_remember) { return; }
my $to_kick;	my $to_kick;
my $max_time=0;	my $max_time=0;
Line 2528 sub repcopy {	Line 3084 sub repcopy {
mkdir($path,0777);	mkdir($path,0777);
}	}
}	}
my $ua=new LWP::UserAgent;
my $request=new HTTP::Request('GET',"$remoteurl");	my $request=new HTTP::Request('GET',"$remoteurl");
my $response=$ua->request($request,$transname);	my $response;
	if ($remoteurl =~ m{/raw/}) {
	$response=&LONCAPA::LWPReq::makerequest($home,$request,$transname,\%perlvar,'',0,1);
	} else {
	$response=&LONCAPA::LWPReq::makerequest($home,$request,$transname,\%perlvar,'',1);
	}
if ($response->is_error()) {	if ($response->is_error()) {
unlink($transname);	unlink($transname);
my $message=$response->status_line;	my $message=$response->status_line;
Line 2540 sub repcopy {	Line 3100 sub repcopy {
} else {	} else {
if ($remoteurl!~/\.meta$/) {	if ($remoteurl!~/\.meta$/) {
my $mrequest=new HTTP::Request('GET',$remoteurl.'.meta');	my $mrequest=new HTTP::Request('GET',$remoteurl.'.meta');
my $mresponse=$ua->request($mrequest,$filename.'.meta');	my $mresponse;
	if ($remoteurl =~ m{/raw/}) {
	$mresponse = &LONCAPA::LWPReq::makerequest($home,$mrequest,$filename.'.meta',\%perlvar,'',0,1);
	} else {
	$mresponse = &LONCAPA::LWPReq::makerequest($home,$mrequest,$filename.'.meta',\%perlvar,'',1);
	}
if ($mresponse->is_error()) {	if ($mresponse->is_error()) {
unlink($filename.'.meta');	unlink($filename.'.meta');
&logthis(	&logthis(
Line 2603 sub absolute_url {	Line 3168 sub absolute_url {
sub ssi {	sub ssi {

my ($fn,%form)=@_;	my ($fn,%form)=@_;
my $ua=new LWP::UserAgent;
my $request;	my $request;

$form{'no_update_last_known'}=1;	$form{'no_update_last_known'}=1;
&Apache::lonenc::check_encrypt(\$fn);	&Apache::lonenc::check_encrypt(\$fn);
if (%form) {	if (%form) {
$request=new HTTP::Request('POST',&absolute_url().$fn);	$request=new HTTP::Request('POST',&absolute_url().$fn);
$request->content(join('&',map { &escape($_).'='.&escape($form{$_}) } keys(%form)));	$request->content(join('&',map {
	my $name = escape($_);
	"$name=" . ( ref($form{$_}) eq 'ARRAY'
	? join("&$name=", map {escape($_) } @{$form{$_}})
	: &escape($form{$_}) );
	} keys(%form)));
} else {	} else {
$request=new HTTP::Request('GET',&absolute_url().$fn);	$request=new HTTP::Request('GET',&absolute_url().$fn);
}	}

$request->header(Cookie => $ENV{'HTTP_COOKIE'});	$request->header(Cookie => $ENV{'HTTP_COOKIE'});
my $response= $ua->request($request);	my $lonhost = $perlvar{'lonHostID'};
my $content = $response->content;	my $response= &LONCAPA::LWPReq::makerequest($lonhost,$request,'',\%perlvar);


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

sub externalssi {	sub externalssi {
my ($url)=@_;	my ($url)=@_;
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 $response = &LONCAPA::LWPReq::makerequest('',$request,'',\%perlvar);
if (wantarray) {	if (wantarray) {
return ($response->content, $response);	return ($response->content, $response);
} else {	} else {
Line 2639 sub externalssi {	Line 3206 sub externalssi {
}	}
}	}


	# If the local copy of a replicated resource is outdated, trigger a
	# connection from the homeserver to flush the delayed queue. If no update
	# happens, remove local copies of outdated resource (and corresponding
	# metadata file).

	sub remove_stale_resfile {
	my ($url) = @_;
	my $removed;
	if ($url=~m{^/res/($match_domain)/($match_username)/}) {
	my $audom = $1;
	my $auname = $2;
	unless (($url =~ /\.\d+\.\w+$/) \|\| ($url =~ m{^/res/lib/templates/})) {
	my $homeserver = &homeserver($auname,$audom);
	unless (($homeserver eq 'no_host') \|\|
	(grep { $_ eq $homeserver } &current_machine_ids())) {
	my $fname = &filelocation('',$url);
	if (-e $fname) {
	my $protocol = $protocol{$homeserver};
	$protocol = 'http' if ($protocol ne 'https');
	my $hostname = &hostname($homeserver);
	if ($hostname) {
	my $uri = &declutter($url);
	my $request=new HTTP::Request('HEAD',$protocol.'://'.$hostname.'/raw/'.$uri);
	my $response = &LONCAPA::LWPReq::makerequest($homeserver,$request,'',\%perlvar,5,0,1);
	if ($response->is_success()) {
	my $remmodtime = &HTTP::Date::str2time( $response->header('Last-modified') );
	my $locmodtime = (stat($fname))[9];
	if ($locmodtime < $remmodtime) {
	my $stale;
	my $answer = &reply('pong',$homeserver);
	if ($answer eq $homeserver.':'.$perlvar{'lonHostID'}) {
	sleep(0.2);
	$locmodtime = (stat($fname))[9];
	if ($locmodtime < $remmodtime) {
	my $posstransfer = $fname.'.in.transfer';
	if ((-e $posstransfer) && ($remmodtime < (stat($posstransfer))[9])) {
	$removed = 1;
	} else {
	$stale = 1;
	}
	} else {
	$removed = 1;
	}
	} else {
	$stale = 1;
	}
	if ($stale) {
	unlink($fname);
	if ($uri!~/\.meta$/) {
	unlink($fname.'.meta');
	}
	&reply("unsub:$fname",$homeserver);
	$removed = 1;
	}
	}
	}
	}
	}
	}
	}
	}
	return $removed;
	}

# -------------------------------- Allow a /uploaded/ URI to be vouched for	# -------------------------------- Allow a /uploaded/ URI to be vouched for

sub allowuploaded {	sub allowuploaded {
Line 2777 sub can_edit_resource {	Line 3409 sub can_edit_resource {
$forceedit = 1;	$forceedit = 1;
}	}
$cfile = $resurl;	$cfile = $resurl;
	} elsif ($resurl =~ m{^/adm/wrapper/adm/$cdom/$cnum/\d+/ext\.tool$}) {
	$incourse = 1;
	if ($env{'form.forceedit'}) {
	$forceview = 1;
	} else {
	$forceedit = 1;
	}
	$cfile = $resurl;
} elsif ($resurl =~ m{^/?adm/viewclasslist$}) {	} elsif ($resurl =~ m{^/?adm/viewclasslist$}) {
$incourse = 1;	$incourse = 1;
if ($env{'form.forceedit'}) {	if ($env{'form.forceedit'}) {
Line 2801 sub can_edit_resource {	Line 3441 sub can_edit_resource {
$forceedit = 1;	$forceedit = 1;
}	}
$cfile = $resurl;	$cfile = $resurl;
	} elsif (($resurl =~ m{^/adm/wrapper/adm/$cdom/$cnum/\d+/ext\.tool$}) && ($env{'form.folderpath'} =~ /^supplemental/)) {
	$incourse = 1;
	if ($env{'form.forceedit'}) {
	$forceview = 1;
	} else {
	$forceedit = 1;
	}
	$cfile = $resurl;
} elsif (($resurl eq '/adm/extresedit') && ($symb \|\| $env{'form.folderpath'})) {	} elsif (($resurl eq '/adm/extresedit') && ($symb \|\| $env{'form.folderpath'})) {
$incourse = 1;	$incourse = 1;
$forceview = 1;	$forceview = 1;
Line 2810 sub can_edit_resource {	Line 3458 sub can_edit_resource {
$cfile = &clutter($res);	$cfile = &clutter($res);
} else {	} else {
$cfile = $env{'form.suppurl'};	$cfile = $env{'form.suppurl'};
$cfile =~ s{^http://}{};	my $escfile = &unescape($cfile);
$cfile = '/adm/wrapper/ext/'.$cfile;	if ($escfile =~ m{^/adm/$cdom/$cnum/\d+/ext\.tool$}) {
	$cfile = '/adm/wrapper'.$escfile;
	} else {
	$escfile =~ s{^http://}{};
	$cfile = &escape("/adm/wrapper/ext/$escfile");
	}
	}
	} elsif ($resurl =~ m{^/?adm/viewclasslist$}) {
	if ($env{'form.forceedit'}) {
	$forceview = 1;
	} else {
	$forceedit = 1;
}	}
	$cfile = ($resurl =~ m{^/} ? $resurl : "/$resurl");
}	}
}	}
if ($uploaded \|\| $incourse) {	if ($uploaded \|\| $incourse) {
Line 2854 sub in_course {	Line 3514 sub in_course {
my ($udom,$uname,$cdom,$cnum,$type,$hideprivileged) = @_;	my ($udom,$uname,$cdom,$cnum,$type,$hideprivileged) = @_;
if ($hideprivileged) {	if ($hideprivileged) {
my $skipuser;	my $skipuser;
if (&privileged($uname,$udom)) {	my %coursehash = &coursedescription($cdom.'_'.$cnum);
	my @possdoms = ($cdom);
	if ($coursehash{'checkforpriv'}) {
	push(@possdoms,split(/,/,$coursehash{'checkforpriv'}));
	}
	if (&privileged($uname,$udom,\@possdoms)) {
$skipuser = 1;	$skipuser = 1;
my %coursehash = &coursedescription($cdom.'_'.$cnum);
if ($coursehash{'nothideprivileged'}) {	if ($coursehash{'nothideprivileged'}) {
foreach my $item (split(/\s\,\s/,$coursehash{'nothideprivileged'})) {	foreach my $item (split(/\s\,\s/,$coursehash{'nothideprivileged'})) {
my $user;	my $user;
Line 2956 sub process_coursefile {	Line 3620 sub process_coursefile {
$home);	$home);
}	}
} elsif ($action eq 'uploaddoc') {	} elsif ($action eq 'uploaddoc') {
open(my $fh,'>'.$filepath.'/'.$fname);	open(my $fh,'>',$filepath.'/'.$fname);
print $fh $env{'form.'.$source};	print $fh $env{'form.'.$source};
close($fh);	close($fh);
if ($parser eq 'parse') {	if ($parser eq 'parse') {
Line 3014 sub store_edited_file {	Line 3678 sub store_edited_file {
($fpath,$fname) = ($file =~ m\|^(.*)/([^/]+)$\|);	($fpath,$fname) = ($file =~ m\|^(.*)/([^/]+)$\|);
$fpath=$docudom.'/'.$docuname.'/'.$fpath;	$fpath=$docudom.'/'.$docuname.'/'.$fpath;
my $filepath = &build_filepath($fpath);	my $filepath = &build_filepath($fpath);
open(my $fh,'>'.$filepath.'/'.$fname);	open(my $fh,'>',$filepath.'/'.$fname);
print $fh $content;	print $fh $content;
close($fh);	close($fh);
my $home=&homeserver($docuname,$docudom);	my $home=&homeserver($docuname,$docudom);
Line 3130 sub userfileupload {	Line 3794 sub userfileupload {
'_'.$env{'user.domain'}.'/pending';	'_'.$env{'user.domain'}.'/pending';
} elsif (($context eq 'existingfile') \|\| ($context eq 'canceloverwrite')) {	} elsif (($context eq 'existingfile') \|\| ($context eq 'canceloverwrite')) {
my ($docuname,$docudom);	my ($docuname,$docudom);
if ($destudom) {	if ($destudom =~ /^$match_domain$/) {
$docudom = $destudom;	$docudom = $destudom;
} else {	} else {
$docudom = $env{'user.domain'};	$docudom = $env{'user.domain'};
}	}
if ($destuname) {	if ($destuname =~ /^$match_username$/) {
$docuname = $destuname;	$docuname = $destuname;
} else {	} else {
$docuname = $env{'user.name'};	$docuname = $env{'user.name'};
Line 3165 sub userfileupload {	Line 3829 sub userfileupload {
mkdir($fullpath,0777);	mkdir($fullpath,0777);
}	}
}	}
open(my $fh,'>'.$fullpath.'/'.$fname);	open(my $fh,'>',$fullpath.'/'.$fname);
print $fh $env{'form.'.$formname};	print $fh $env{'form.'.$formname};
close($fh);	close($fh);
if ($context eq 'existingfile') {	if ($context eq 'existingfile') {
Line 3189 sub userfileupload {	Line 3853 sub userfileupload {
$codebase,$thumbwidth,$thumbheight,	$codebase,$thumbwidth,$thumbheight,
$resizewidth,$resizeheight,$context,$mimetype);	$resizewidth,$resizeheight,$context,$mimetype);
} else {	} else {
$fname=$env{'form.folder'}.'/'.$fname;	if ($env{'form.folder'}) {
	$fname=$env{'form.folder'}.'/'.$fname;
	}
return &process_coursefile('uploaddoc',$docuname,$docudom,	return &process_coursefile('uploaddoc',$docuname,$docudom,
$fname,$formname,$parser,	$fname,$formname,$parser,
$allfiles,$codebase,$mimetype);	$allfiles,$codebase,$mimetype);
Line 3204 sub userfileupload {	Line 3870 sub userfileupload {
} else {	} else {
my $docuname=$env{'user.name'};	my $docuname=$env{'user.name'};
my $docudom=$env{'user.domain'};	my $docudom=$env{'user.domain'};
if (exists($env{'form.group'})) {	if ((exists($env{'form.group'})) \|\| ($context eq 'syllabus')) {
$docuname=$env{'course.'.$env{'request.course.id'}.'.num'};	$docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
$docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};	$docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
}	}
Line 3238 sub finishuserfileupload {	Line 3904 sub finishuserfileupload {

# Save the file	# Save the file
{	{
if (!open(FH,'>'.$filepath.'/'.$file)) {	if (!open(FH,'>',$filepath.'/'.$file)) {
&logthis('Failed to create '.$filepath.'/'.$file);	&logthis('Failed to create '.$filepath.'/'.$file);
print STDERR ('Failed to create '.$filepath.'/'.$file."\n");	print STDERR ('Failed to create '.$filepath.'/'.$file."\n");
return '/adm/notfound.html';	return '/adm/notfound.html';
Line 3296 sub finishuserfileupload {	Line 3962 sub finishuserfileupload {
my $input = $filepath.'/'.$file;	my $input = $filepath.'/'.$file;
my $output = $filepath.'/'.'tn-'.$file;	my $output = $filepath.'/'.'tn-'.$file;
my $thumbsize = $thumbwidth.'x'.$thumbheight;	my $thumbsize = $thumbwidth.'x'.$thumbheight;
system("convert -sample $thumbsize $input $output");	my @args = ('convert','-sample',$thumbsize,$input,$output);
	system({$args[0]} @args);
if (-e $filepath.'/'.'tn-'.$file) {	if (-e $filepath.'/'.'tn-'.$file) {
$fetchthumb = 1;	$fetchthumb = 1;
}	}
Line 3354 sub extract_embedded_items {	Line 4021 sub extract_embedded_items {
&add_filetype($allfiles,$attr->{'src'},'src');	&add_filetype($allfiles,$attr->{'src'},'src');
}	}
if (lc($tagname) eq 'a') {	if (lc($tagname) eq 'a') {
&add_filetype($allfiles,$attr->{'href'},'href');	unless (($attr->{'href'} =~ /^#/) \|\| ($attr->{'href'} eq '')) {
	&add_filetype($allfiles,$attr->{'href'},'href');
	}
}	}
if (lc($tagname) eq 'script') {	if (lc($tagname) eq 'script') {
my $src;	my $src;
Line 3442 sub extract_embedded_items {	Line 4111 sub extract_embedded_items {
}	}
}	}
}	}
	if (lc($tagname) eq 'iframe') {
	my $src = $attr->{'src'} ;
	if (($src ne '') && ($src !~ m{^(/\|https?://)})) {
	&add_filetype($allfiles,$src,'src');
	} elsif ($src =~ m{^/}) {
	if ($env{'request.course.id'}) {
	my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
	my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
	my $url = &hreflocation('',$fullpath);
	if ($url =~ m{^/uploaded/$cdom/$cnum/docs/(\w+/\d+)/}) {
	my $relpath = $1;
	if ($src =~ m{^/uploaded/$cdom/$cnum/docs/\Q$relpath\E/(.+)$}) {
	&add_filetype($allfiles,$1,'src');
	}
	}
	}
	}
	}
if ($t->[4] =~ m{/>$}) {	if ($t->[4] =~ m{/>$}) {
pop(@state);	pop(@state);
}	}
} elsif ($t->[0] eq 'E') {	} elsif ($t->[0] eq 'E') {
my ($tagname) = ($t->[1]);	my ($tagname) = ($t->[1]);
Line 3660 sub flushcourselogs {	Line 4347 sub flushcourselogs {
}	}
}	}
#	#
# Reverse lookup of domain roles (dc, ad, li, sc, au)	# Reverse lookup of domain roles (dc, ad, li, sc, dh, da, au)
#	#
my %domrolebuffer = ();	my %domrolebuffer = ();
foreach my $entry (keys(%domainrolehash)) {	foreach my $entry (keys(%domainrolehash)) {
Line 3675 sub flushcourselogs {	Line 4362 sub flushcourselogs {
delete $domainrolehash{$entry};	delete $domainrolehash{$entry};
}	}
foreach my $dom (keys(%domrolebuffer)) {	foreach my $dom (keys(%domrolebuffer)) {
my %servers = &get_servers($dom,'library');	my %servers;
	if (defined(&domain($dom,'primary'))) {
	my $primary=&domain($dom,'primary');
	my $hostname=&hostname($primary);
	$servers{$primary} = $hostname;
	} else {
	%servers = &get_servers($dom,'library');
	}
foreach my $tryserver (keys(%servers)) {	foreach my $tryserver (keys(%servers)) {
unless (&reply('domroleput:'.$dom.':'.	if (&reply('domroleput:'.$dom.':'.
$domrolebuffer{$dom},$tryserver) eq 'ok') {	$domrolebuffer{$dom},$tryserver) eq 'ok') {
	last;
	} else {
&logthis('Put of domain roles failed for '.$dom.' and '.$tryserver);	&logthis('Put of domain roles failed for '.$dom.' and '.$tryserver);
}	}
}	}
Line 3798 sub userrolelog {	Line 4494 sub userrolelog {
{$trole.':'.$username.':'.$domain.':'.$env{'user.name'}.':'.$env{'user.domain'}.':'}	{$trole.':'.$username.':'.$domain.':'.$env{'user.name'}.':'.$env{'user.domain'}.':'}
=$tend.':'.$tstart;	=$tend.':'.$tstart;
}	}
if ($trole =~ /^(dc\|ad\|li\|au\|dg\|sc)/ ) {	if ($trole =~ /^(dc\|ad\|li\|au\|dg\|sc\|dh\|da)/ ) {
my (undef,$rudom,$runame,$rsec)=split(/\//,$area);	my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
$domainrolehash	$domainrolehash
{$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}	{$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
Line 3885 sub get_course_adv_roles {	Line 4581 sub get_course_adv_roles {
$nothide{$user}=1;	$nothide{$user}=1;
}	}
}	}
	my @possdoms = ($coursehash{'domain'});
	if ($coursehash{'checkforpriv'}) {
	push(@possdoms,split(/,/,$coursehash{'checkforpriv'}));
	}
my %returnhash=();	my %returnhash=();
my %dumphash=	my %dumphash=
&dump('nohist_userroles',$coursehash{'domain'},$coursehash{'num'});	&dump('nohist_userroles',$coursehash{'domain'},$coursehash{'num'});
Line 3897 sub get_course_adv_roles {	Line 4597 sub get_course_adv_roles {
if (($tstart) && ($now<$tstart)) { next; }	if (($tstart) && ($now<$tstart)) { next; }
my ($role,$username,$domain,$section)=split(/\:/,$entry);	my ($role,$username,$domain,$section)=split(/\:/,$entry);
if ($username eq '' \|\| $domain eq '') { next; }	if ($username eq '' \|\| $domain eq '') { next; }
unless (ref($privileged{$domain}) eq 'HASH') {	if ((&privileged($username,$domain,\@possdoms)) &&
my %dompersonnel =
&Apache::lonnet::get_domain_roles($domain,['dc'],$now,$now);
$privileged{$domain} = {};
foreach my $server (keys(%dompersonnel)) {
if (ref($dompersonnel{$server}) eq 'HASH') {
foreach my $user (keys(%{$dompersonnel{$server}})) {
my ($trole,$uname,$udom) = split(/:/,$user);
$privileged{$udom}{$uname} = 1;
}
}
}
}
if ((exists($privileged{$domain}{$username})) &&
(!$nothide{$username.':'.$domain})) { next; }	(!$nothide{$username.':'.$domain})) { next; }
if ($role eq 'cr') { next; }	if ($role eq 'cr') { next; }
if ($codes) {	if ($codes) {
Line 3941 sub get_my_roles {	Line 4628 sub get_my_roles {
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 ($hidepriv) {	if ($hidepriv) {
my %coursehash=&coursedescription($udom.'_'.$uname);	my %coursehash=&coursedescription($udom.'_'.$uname);
foreach my $user (split(/\s\,\s/,$coursehash{'nothideprivileged'})) {	foreach my $user (split(/\s\,\s/,$coursehash{'nothideprivileged'})) {
Line 4010 sub get_my_roles {	Line 4696 sub get_my_roles {
}	}
}	}
if ($hidepriv) {	if ($hidepriv) {
	my @privroles = ('dc','su');
if ($context eq 'userroles') {	if ($context eq 'userroles') {
if ((&privileged($username,$domain)) &&	next if (grep(/^\Q$role\E$/,@privroles));
(!$nothide{$username.':'.$domain})) {
next;
}
} else {	} else {
unless (ref($privileged{$domain}) eq 'HASH') {	my $possdoms = [$domain];
my %dompersonnel =	if (ref($roledoms) eq 'ARRAY') {
&Apache::lonnet::get_domain_roles($domain,['dc'],$now,$now);	push(@{$possdoms},@{$roledoms});
$privileged{$domain} = {};
if (keys(%dompersonnel)) {
foreach my $server (keys(%dompersonnel)) {
if (ref($dompersonnel{$server}) eq 'HASH') {
foreach my $user (keys(%{$dompersonnel{$server}})) {
my ($trole,$uname,$udom) = split(/:/,$user);
$privileged{$udom}{$uname} = $trole;
}
}
}
}
}	}
if (exists($privileged{$domain}{$username})) {	if (&privileged($username,$domain,$possdoms,\@privroles)) {
if (!$nothide{$username.':'.$domain}) {	if (!$nothide{$username.':'.$domain}) {
next;	next;
}	}
Line 4048 sub get_my_roles {	Line 4721 sub get_my_roles {
return %returnhash;	return %returnhash;
}	}

	sub get_all_adhocroles {
	my ($dom) = @_;
	my @roles_by_num = ();
	my %domdefaults = &get_domain_defaults($dom);
	my (%description,%access_in_dom,%access_info);
	if (ref($domdefaults{'adhocroles'}) eq 'HASH') {
	my $count = 0;
	my %domcurrent = %{$domdefaults{'adhocroles'}};
	my %ordered;
	foreach my $role (sort(keys(%domcurrent))) {
	my ($order,$desc,$access_in_dom);
	if (ref($domcurrent{$role}) eq 'HASH') {
	$order = $domcurrent{$role}{'order'};
	$desc = $domcurrent{$role}{'desc'};
	$access_in_dom{$role} = $domcurrent{$role}{'access'};
	$access_info{$role} = $domcurrent{$role}{$access_in_dom{$role}};
	}
	if ($order eq '') {
	$order = $count;
	}
	$ordered{$order} = $role;
	if ($desc ne '') {
	$description{$role} = $desc;
	} else {
	$description{$role}= $role;
	}
	$count++;
	}
	foreach my $item (sort {$a <=> $b } (keys(%ordered))) {
	push(@roles_by_num,$ordered{$item});
	}
	}
	return (\@roles_by_num,\%description,\%access_in_dom,\%access_info);
	}

	sub get_my_adhocroles {
	my ($cid,$checkreg) = @_;
	my ($cdom,$cnum,%info,@possroles,$description,$roles_by_num);
	if ($env{'request.course.id'} eq $cid) {
	$cdom = $env{'course.'.$cid.'.domain'};
	$cnum = $env{'course.'.$cid.'.num'};
	$info{'internal.coursecode'} = $env{'course.'.$cid.'.internal.coursecode'};
	} elsif ($cid =~ /^($match_domain)_($match_courseid)$/) {
	$cdom = $1;
	$cnum = $2;
	%info = &Apache::lonnet::get('environment',['internal.coursecode'],
	$cdom,$cnum);
	}
	if (($info{'internal.coursecode'} ne '') && ($checkreg)) {
	my $user = $env{'user.name'}.':'.$env{'user.domain'};
	my %rosterhash = &get('classlist',[$user],$cdom,$cnum);
	if ($rosterhash{$user} ne '') {
	my $type = (split(/:/,$rosterhash{$user}))[5];
	return ([],{}) if ($type eq 'auto');
	}
	}
	if (($cdom ne '') && ($cnum ne '')) {
	if (($env{"user.role.dh./$cdom/"}) \|\| ($env{"user.role.da./$cdom/"})) {
	my $then=$env{'user.login.time'};
	my $update=$env{'user.update.time'};
	if (!$update) {
	$update = $then;
	}
	my @liveroles;
	foreach my $role ('dh','da') {
	if ($env{"user.role.$role./$cdom/"}) {
	my ($tstart,$tend)=split(/\./,$env{"user.role.$role./$cdom/"});
	my $limit = $update;
	if ($env{'request.role'} eq "$role./$cdom/") {
	$limit = $then;
	}
	my $activerole = 1;
	if ($tstart && $tstart>$limit) { $activerole = 0; }
	if ($tend && $tend <$limit) { $activerole = 0; }
	if ($activerole) {
	push(@liveroles,$role);
	}
	}
	}
	if (@liveroles) {
	if (&homeserver($cnum,$cdom) ne 'no_host') {
	my ($accessref,$accessinfo,%access_in_dom);
	($roles_by_num,$description,$accessref,$accessinfo) = &get_all_adhocroles($cdom);
	if (ref($roles_by_num) eq 'ARRAY') {
	if (@{$roles_by_num}) {
	my %settings;
	if ($env{'request.course.id'} eq $cid) {
	foreach my $envkey (keys(%env)) {
	if ($envkey =~ /^\Qcourse.$cid.\E(internal\.adhoc.+)$/) {
	$settings{$1} = $env{$envkey};
	}
	}
	} else {
	%settings = &dump('environment',$cdom,$cnum,'internal\.adhoc');
	}
	my %setincrs;
	if ($settings{'internal.adhocaccess'}) {
	map { $setincrs{$_} = 1; } split(/,/,$settings{'internal.adhocaccess'});
	}
	my @statuses;
	if ($env{'environment.inststatus'}) {
	@statuses = split(/,/,$env{'environment.inststatus'});
	}
	my $user = $env{'user.name'}.':'.$env{'user.domain'};
	if (ref($accessref) eq 'HASH') {
	%access_in_dom = %{$accessref};
	}
	foreach my $role (@{$roles_by_num}) {
	my ($curraccess,@okstatus,@personnel);
	if ($setincrs{$role}) {
	($curraccess,my $rest) = split(/=/,$settings{'internal.adhoc.'.$role});
	if ($curraccess eq 'status') {
	@okstatus = split(/\&/,$rest);
	} elsif (($curraccess eq 'exc') \|\| ($curraccess eq 'inc')) {
	@personnel = split(/\&/,$rest);
	}
	} else {
	$curraccess = $access_in_dom{$role};
	if (ref($accessinfo) eq 'HASH') {
	if ($curraccess eq 'status') {
	if (ref($accessinfo->{$role}) eq 'ARRAY') {
	@okstatus = @{$accessinfo->{$role}};
	}
	} elsif (($curraccess eq 'exc') \|\| ($curraccess eq 'inc')) {
	if (ref($accessinfo->{$role}) eq 'ARRAY') {
	@personnel = @{$accessinfo->{$role}};
	}
	}
	}
	}
	if ($curraccess eq 'none') {
	next;
	} elsif ($curraccess eq 'all') {
	push(@possroles,$role);
	} elsif ($curraccess eq 'dh') {
	if (grep(/^dh$/,@liveroles)) {
	push(@possroles,$role);
	} else {
	next;
	}
	} elsif ($curraccess eq 'da') {
	if (grep(/^da$/,@liveroles)) {
	push(@possroles,$role);
	} else {
	next;
	}
	} elsif ($curraccess eq 'status') {
	if (@okstatus) {
	if (!@statuses) {
	if (grep(/^default$/,@okstatus)) {
	push(@possroles,$role);
	}
	} else {
	foreach my $status (@okstatus) {
	if (grep(/^\Q$status\E$/,@statuses)) {
	push(@possroles,$role);
	last;
	}
	}
	}
	}
	} elsif (($curraccess eq 'exc') \|\| ($curraccess eq 'inc')) {
	if (grep(/^\Q$user\E$/,@personnel)) {
	if ($curraccess eq 'exc') {
	push(@possroles,$role);
	}
	} elsif ($curraccess eq 'inc') {
	push(@possroles,$role);
	}
	}
	}
	}
	}
	}
	}
	}
	}
	unless (ref($description) eq 'HASH') {
	if (ref($roles_by_num) eq 'ARRAY') {
	my %desc;
	map { $desc{$_} = $_; } (@{$roles_by_num});
	$description = \%desc;
	} else {
	$description = {};
	}
	}
	return (\@possroles,$description);
	}

# ----------------------------------------------------- Frontpage Announcements	# ----------------------------------------------------- Frontpage Announcements
#	#
#	#
Line 4061 sub postannounce {	Line 4923 sub postannounce {

sub getannounce {	sub getannounce {

if (open(my $fh,$perlvar{'lonDocRoot'}.'/announcement.txt')) {	if (open(my $fh,"<",$perlvar{'lonDocRoot'}.'/announcement.txt')) {
my $announcement='';	my $announcement='';
while (my $line = <$fh>) { $announcement .= $line; }	while (my $line = <$fh>) { $announcement .= $line; }
close($fh);	close($fh);
Line 4123 sub courseiddump {	Line 4985 sub courseiddump {
my ($domfilter,$descfilter,$sincefilter,$instcodefilter,$ownerfilter,	my ($domfilter,$descfilter,$sincefilter,$instcodefilter,$ownerfilter,
$coursefilter,$hostidflag,$hostidref,$typefilter,$regexp_ok,	$coursefilter,$hostidflag,$hostidref,$typefilter,$regexp_ok,
$selfenrollonly,$catfilter,$showhidden,$caller,$cloner,$cc_clone,	$selfenrollonly,$catfilter,$showhidden,$caller,$cloner,$cc_clone,
$cloneonly,$createdbefore,$createdafter,$creationcontext,$domcloner)=@_;	$cloneonly,$createdbefore,$createdafter,$creationcontext,$domcloner,
	$hasuniquecode,$reqcrsdom,$reqinstcode)=@_;
my $as_hash = 1;	my $as_hash = 1;
my %returnhash;	my %returnhash;
if (!$domfilter) { $domfilter=''; }	if (!$domfilter) { $domfilter=''; }
Line 4146 sub courseiddump {	Line 5009 sub courseiddump {
&escape($catfilter), $showhidden, $caller,	&escape($catfilter), $showhidden, $caller,
&escape($cloner), &escape($cc_clone), $cloneonly,	&escape($cloner), &escape($cc_clone), $cloneonly,
&escape($createdbefore), &escape($createdafter),	&escape($createdbefore), &escape($createdafter),
&escape($creationcontext), $domcloner)));	&escape($creationcontext),$domcloner,$hasuniquecode,
	$reqcrsdom,&escape($reqinstcode))));
} else {	} else {
$rep = &reply('courseiddump:'.&host_domain($tryserver).':'.	$rep = &reply('courseiddump:'.&host_domain($tryserver).':'.
$sincefilter.':'.&escape($descfilter).':'.	$sincefilter.':'.&escape($descfilter).':'.
Line 4157 sub courseiddump {	Line 5021 sub courseiddump {
$showhidden.':'.$caller.':'.&escape($cloner).':'.	$showhidden.':'.$caller.':'.&escape($cloner).':'.
&escape($cc_clone).':'.$cloneonly.':'.	&escape($cc_clone).':'.$cloneonly.':'.
&escape($createdbefore).':'.&escape($createdafter).':'.	&escape($createdbefore).':'.&escape($createdafter).':'.
&escape($creationcontext).':'.$domcloner,	&escape($creationcontext).':'.$domcloner.':'.$hasuniquecode.
$tryserver);	':'.$reqcrsdom.':'.&escape($reqinstcode),$tryserver);
}	}

my @pairs=split(/\&/,$rep);	my @pairs=split(/\&/,$rep);
Line 4266 sub get_domain_roles {	Line 5130 sub get_domain_roles {
}	}
my $rolelist;	my $rolelist;
if (ref($roles) eq 'ARRAY') {	if (ref($roles) eq 'ARRAY') {
$rolelist = join(':',@{$roles});	$rolelist = join('&',@{$roles});
}	}
my %personnel = ();	my %personnel = ();

Line 4286 sub get_domain_roles {	Line 5150 sub get_domain_roles {
return %personnel;	return %personnel;
}	}

	sub get_active_domroles {
	my ($dom,$roles) = @_;
	return () unless (ref($roles) eq 'ARRAY');
	my $now = time;
	my %dompersonnel = &get_domain_roles($dom,$roles,$now,$now);
	my %domroles;
	foreach my $server (keys(%dompersonnel)) {
	foreach my $user (sort(keys(%{$dompersonnel{$server}}))) {
	my ($trole,$uname,$udom,$runame,$rudom,$rsec) = split(/:/,$user);
	$domroles{$uname.':'.$udom} = $dompersonnel{$server}{$user};
	}
	}
	return %domroles;
	}

# ----------------------------------------------------------- Interval timing	# ----------------------------------------------------------- Interval timing

{	{
Line 4297 my $cachedkey='';	Line 5176 my $cachedkey='';
# The cached times for this user	# The cached times for this user
my %cachedtimes=();	my %cachedtimes=();
# When this was last done	# When this was last done
my $cachedtime=();	my $cachedtime='';

sub load_all_first_access {	sub load_all_first_access {
my ($uname,$udom)=@_;	my ($uname,$udom,$ignorecache)=@_;
if (($cachedkey eq $uname.':'.$udom) &&	if (($cachedkey eq $uname.':'.$udom) &&
(abs($cachedtime-time)<5) && (!$env{'form.markaccess'})) {	(abs($cachedtime-time)<5) && (!$env{'form.markaccess'}) &&
	(!$ignorecache)) {
return;	return;
}	}
$cachedtime=time;	$cachedtime=time;
Line 4311 sub load_all_first_access {	Line 5191 sub load_all_first_access {
}	}

sub get_first_access {	sub get_first_access {
my ($type,$argsymb,$argmap)=@_;	my ($type,$argsymb,$argmap,$ignorecache)=@_;
my ($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);
Line 4323 sub get_first_access {	Line 5203 sub get_first_access {
} else {	} else {
$res=$symb;	$res=$symb;
}	}
&load_all_first_access($uname,$udom);	&load_all_first_access($uname,$udom,$ignorecache);
return $cachedtimes{"$courseid\0$res"};	return $cachedtimes{"$courseid\0$res"};
}	}

Line 4353 sub set_first_access {	Line 5233 sub set_first_access {
'course.'.$courseid.'.timerinterval.'.$res => $interval,	'course.'.$courseid.'.timerinterval.'.$res => $interval,
}	}
);	);
	if (($cachedtime) && (abs($start-$cachedtime) < 5)) {
	$cachedtimes{"$courseid\0$res"} = $start;
	}
}	}
return $putres;	return $putres;
}	}
return 'already_set';	return 'already_set';
}	}
}	}

# --------------------------------------------- Set Expire Date for Spreadsheet	# --------------------------------------------- Set Expire Date for Spreadsheet

sub expirespread {	sub expirespread {
Line 4729 sub tmprestore {	Line 5613 sub tmprestore {
# ----------------------------------------------------------------------- Store	# ----------------------------------------------------------------------- Store

sub store {	sub store {
my ($storehash,$symb,$namespace,$domain,$stuname) = @_;	my ($storehash,$symb,$namespace,$domain,$stuname,$laststore) = @_;
my $home='';	my $home='';

if ($stuname) { $home=&homeserver($stuname,$domain); }	if ($stuname) { $home=&homeserver($stuname,$domain); }
Line 4759 sub store {	Line 5643 sub store {
}	}
$namevalue=~s/\&$//;	$namevalue=~s/\&$//;
&courselog($symb.':'.$stuname.':'.$domain.':STORE:'.$namevalue);	&courselog($symb.':'.$stuname.':'.$domain.':STORE:'.$namevalue);
return reply("store:$domain:$stuname:$namespace:$symb:$namevalue","$home");	return reply("store:$domain:$stuname:$namespace:$symb:$namevalue:$laststore","$home");
}	}

# -------------------------------------------------------------- Critical Store	# -------------------------------------------------------------- Critical Store

sub cstore {	sub cstore {
my ($storehash,$symb,$namespace,$domain,$stuname) = @_;	my ($storehash,$symb,$namespace,$domain,$stuname,$laststore) = @_;
my $home='';	my $home='';

if ($stuname) { $home=&homeserver($stuname,$domain); }	if ($stuname) { $home=&homeserver($stuname,$domain); }
Line 4796 sub cstore {	Line 5680 sub cstore {
$namevalue=~s/\&$//;	$namevalue=~s/\&$//;
&courselog($symb.':'.$stuname.':'.$domain.':CSTORE:'.$namevalue);	&courselog($symb.':'.$stuname.':'.$domain.':CSTORE:'.$namevalue);
return critical	return critical
("store:$domain:$stuname:$namespace:$symb:$namevalue","$home");	("store:$domain:$stuname:$namespace:$symb:$namevalue:$laststore","$home");
}	}

# --------------------------------------------------------------------- Restore	# --------------------------------------------------------------------- Restore
Line 4808 sub restore {	Line 5692 sub restore {
if ($stuname) { $home=&homeserver($stuname,$domain); }	if ($stuname) { $home=&homeserver($stuname,$domain); }

if (!$symb) {	if (!$symb) {
unless ($symb=escape(&symbread())) { return ''; }	return if ($namespace eq 'courserequests');
	unless ($symb=escape(&symbread())) { return ''; }
} else {	} else {
$symb=&escape(&symbclean($symb));	unless ($namespace eq 'courserequests') {
	$symb=&escape(&symbclean($symb));
	}
}	}
if (!$namespace) {	if (!$namespace) {
unless ($namespace=$env{'request.course.id'}) {	unless ($namespace=$env{'request.course.id'}) {
Line 4945 sub update_released_required {	Line 5832 sub update_released_required {
# -------------------------------------------------See if a user is privileged	# -------------------------------------------------See if a user is privileged

sub privileged {	sub privileged {
my ($username,$domain)=@_;	my ($username,$domain,$possdomains,$possroles)=@_;

my %rolesdump = &dump("roles", $domain, $username) or return 0;
my $now = time;	my $now = time;
	my $roles;
	if (ref($possroles) eq 'ARRAY') {
	$roles = $possroles;
	} else {
	$roles = ['dc','su'];
	}
	if (ref($possdomains) eq 'ARRAY') {
	my %privileged = &privileged_by_domain($possdomains,$roles);
	foreach my $dom (@{$possdomains}) {
	if (($username =~ /^$match_username$/) && ($domain =~ /^$match_domain$/) &&
	(ref($privileged{$dom}) eq 'HASH')) {
	foreach my $role (@{$roles}) {
	if (ref($privileged{$dom}{$role}) eq 'HASH') {
	if (exists($privileged{$dom}{$role}{$username.':'.$domain})) {
	my ($end,$start) = split(/:/,$privileged{$dom}{$role}{$username.':'.$domain});
	return 1 unless (($end && $end < $now) \|\|
	($start && $start > $now));
	}
	}
	}
	}
	}
	} else {
	my %rolesdump = &dump("roles", $domain, $username) or return 0;
	my $now = time;

for my $role (@rolesdump{grep { ! /^rolesdef_/ } keys %rolesdump}) {	for my $role (@rolesdump{grep { ! /^rolesdef_/ } keys(%rolesdump)}) {
my ($trole, $tend, $tstart) = split(/_/, $role);	my ($trole, $tend, $tstart) = split(/_/, $role);
if (($trole eq 'dc') \|\| ($trole eq 'su')) {	if (grep(/^\Q$trole\E$/,@{$roles})) {
return 1 unless ($tend && $tend < $now)	return 1 unless ($tend && $tend < $now)
or ($tstart && $tstart > $now);	or ($tstart && $tstart > $now);
}	}
}	}
	}
return 0;	return 0;
}	}

	sub privileged_by_domain {
	my ($domains,$roles) = @_;
	my %privileged = ();
	my $cachetime = 606024;
	my $now = time;
	unless ((ref($domains) eq 'ARRAY') && (ref($roles) eq 'ARRAY')) {
	return %privileged;
	}
	foreach my $dom (@{$domains}) {
	next if (ref($privileged{$dom}) eq 'HASH');
	my $needroles;
	foreach my $role (@{$roles}) {
	my ($result,$cached)=&is_cached_new('priv_'.$role,$dom);
	if (defined($cached)) {
	if (ref($result) eq 'HASH') {
	$privileged{$dom}{$role} = $result;
	}
	} else {
	$needroles = 1;
	}
	}
	if ($needroles) {
	my %dompersonnel = &get_domain_roles($dom,$roles);
	$privileged{$dom} = {};
	foreach my $server (keys(%dompersonnel)) {
	if (ref($dompersonnel{$server}) eq 'HASH') {
	foreach my $item (keys(%{$dompersonnel{$server}})) {
	my ($trole,$uname,$udom,$rest) = split(/:/,$item,4);
	my ($end,$start) = split(/:/,$dompersonnel{$server}{$item});
	next if ($end && $end < $now);
	$privileged{$dom}{$trole}{$uname.':'.$udom} =
	$dompersonnel{$server}{$item};
	}
	}
	}
	if (ref($privileged{$dom}) eq 'HASH') {
	foreach my $role (@{$roles}) {
	if (ref($privileged{$dom}{$role}) eq 'HASH') {
	&do_cache_new('priv_'.$role,$dom,$privileged{$dom}{$role},$cachetime);
	} else {
	my %hash = ();
	&do_cache_new('priv_'.$role,$dom,\%hash,$cachetime);
	}
	}
	}
	}
	}
	return %privileged;
	}

# -------------------------------------------------------- Get user privileges	# -------------------------------------------------------- Get user privileges

sub rolesinit {	sub rolesinit {
Line 4989 sub rolesinit {	Line 5949 sub rolesinit {
my %allroles=();	my %allroles=();
my %allgroups=();	my %allgroups=();

for my $area (grep { ! /^rolesdef_/ } keys %rolesdump) {	for my $area (grep { ! /^rolesdef_/ } keys(%rolesdump)) {
my $role = $rolesdump{$area};	my $role = $rolesdump{$area};
$area =~ s/\_\w\w$//;	$area =~ s/\_\w\w$//;

Line 5062 sub rolesinit {	Line 6022 sub rolesinit {
}	}
}	}

@userroles{'user.author', 'user.adv'} = &set_userprivs(\%userroles,	@userroles{'user.author','user.adv','user.rar'} = &set_userprivs(\%userroles,
\%allroles, \%allgroups);	\%allroles, \%allgroups);
$env{'user.adv'} = $userroles{'user.adv'};	$env{'user.adv'} = $userroles{'user.adv'};
	$env{'user.rar'} = $userroles{'user.rar'};

return (\%userroles,\%firstaccenv,\%timerintenv);	return (\%userroles,\%firstaccenv,\%timerintenv);
}	}

sub set_arearole {	sub set_arearole {
my ($trole,$area,$tstart,$tend,$domain,$username) = @_;	my ($trole,$area,$tstart,$tend,$domain,$username,$nolog) = @_;
	unless ($nolog) {
# log the associated role with the area	# log the associated role with the area
&userrolelog($trole,$username,$domain,$area,$tstart,$tend);	&userrolelog($trole,$username,$domain,$area,$tstart,$tend);
	}
return ('user.role.'.$trole.'.'.$area => $tstart.'.'.$tend);	return ('user.role.'.$trole.'.'.$area => $tstart.'.'.$tend);
}	}

sub custom_roleprivs {	sub custom_roleprivs {
my ($allroles,$trole,$tdomain,$trest,$spec,$area) = @_;	my ($allroles,$trole,$tdomain,$trest,$spec,$area) = @_;
my ($rdummy,$rdomain,$rauthor,$rrole)=split(/\//,$trole);	my ($rdummy,$rdomain,$rauthor,$rrole)=split(/\//,$trole);
my $homsvr=homeserver($rauthor,$rdomain);	my $homsvr = &homeserver($rauthor,$rdomain);
if (&hostname($homsvr) ne '') {	if (&hostname($homsvr) ne '') {
my ($rdummy,$roledef)=	my ($rdummy,$roledef)=
&get('roles',["rolesdef_$rrole"],$rdomain,$rauthor);	&get('roles',["rolesdef_$rrole"],$rdomain,$rauthor);
Line 5098 sub custom_roleprivs {	Line 6061 sub custom_roleprivs {
$$allroles{$spec.'./'.$tdomain.'/'}.=':'.$dompriv;	$$allroles{$spec.'./'.$tdomain.'/'}.=':'.$dompriv;
}	}
if (($trest ne '') && (defined($coursepriv))) {	if (($trest ne '') && (defined($coursepriv))) {
	if ($trole =~ m{^cr/$tdomain/$tdomain\Q-domainconfig\E/([^/]+)$}) {
	my $rolename = $1;
	$coursepriv = &course_adhocrole_privs($rolename,$tdomain,$trest,$coursepriv);
	}
$$allroles{'cm.'.$area}.=':'.$coursepriv;	$$allroles{'cm.'.$area}.=':'.$coursepriv;
$$allroles{$spec.'.'.$area}.=':'.$coursepriv;	$$allroles{$spec.'.'.$area}.=':'.$coursepriv;
}	}
Line 5106 sub custom_roleprivs {	Line 6073 sub custom_roleprivs {
}	}
}	}

	sub course_adhocrole_privs {
	my ($rolename,$cdom,$cnum,$coursepriv) = @_;
	my %overrides = &get('environment',["internal.adhocpriv.$rolename"],$cdom,$cnum);
	if ($overrides{"internal.adhocpriv.$rolename"}) {
	my (%currprivs,%storeprivs);
	foreach my $item (split(/:/,$coursepriv)) {
	my ($priv,$restrict) = split(/\&/,$item);
	$currprivs{$priv} = $restrict;
	}
	my (%possadd,%possremove,%full);
	foreach my $item (split(/\:/,$Apache::lonnet::pr{'cr:c'})) {
	my ($priv,$restrict)=split(/\&/,$item);
	$full{$priv} = $restrict;
	}
	foreach my $item (split(/,/,$overrides{"internal.adhocpriv.$rolename"})) {
	next if ($item eq '');
	my ($rule,$rest) = split(/=/,$item);
	next unless (($rule eq 'off') \|\| ($rule eq 'on'));
	foreach my $priv (split(/:/,$rest)) {
	if ($priv ne '') {
	if ($rule eq 'off') {
	$possremove{$priv} = 1;
	} else {
	$possadd{$priv} = 1;
	}
	}
	}
	}
	foreach my $priv (sort(keys(%full))) {
	if (exists($currprivs{$priv})) {
	unless (exists($possremove{$priv})) {
	$storeprivs{$priv} = $currprivs{$priv};
	}
	} elsif (exists($possadd{$priv})) {
	$storeprivs{$priv} = $full{$priv};
	}
	}
	$coursepriv = ':'.join(':',map { $_.'&'.$storeprivs{$_}; } sort(keys(%storeprivs)));
	}
	return $coursepriv;
	}

sub group_roleprivs {	sub group_roleprivs {
my ($allgroups,$area,$group_privs,$tend,$tstart) = @_;	my ($allgroups,$area,$group_privs,$tend,$tstart) = @_;
my $access = 1;	my $access = 1;
Line 5140 sub set_userprivs {	Line 6149 sub set_userprivs {
my ($userroles,$allroles,$allgroups,$groups_roles) = @_;	my ($userroles,$allroles,$allgroups,$groups_roles) = @_;
my $author=0;	my $author=0;
my $adv=0;	my $adv=0;
	my $rar=0;
my %grouproles = ();	my %grouproles = ();
if (keys(%{$allgroups}) > 0) {	if (keys(%{$allgroups}) > 0) {
my @groupkeys;	my @groupkeys;
Line 5187 sub set_userprivs {	Line 6197 sub set_userprivs {
$thesepriv{$privilege}.=$restrictions;	$thesepriv{$privilege}.=$restrictions;
}	}
if ($thesepriv{'adv'} eq 'F') { $adv=1; }	if ($thesepriv{'adv'} eq 'F') { $adv=1; }
	if ($thesepriv{'rar'} eq 'F') { $rar=1; }
}	}
}	}
my $thesestr='';	my $thesestr='';
Line 5195 sub set_userprivs {	Line 6206 sub set_userprivs {
}	}
$userroles->{'user.priv.'.$role} = $thesestr;	$userroles->{'user.priv.'.$role} = $thesestr;
}	}
return ($author,$adv);	return ($author,$adv,$rar);
}	}

sub role_status {	sub role_status {
my ($rolekey,$update,$refresh,$now,$role,$where,$trolecode,$tstatus,$tstart,$tend) = @_;	my ($rolekey,$update,$refresh,$now,$role,$where,$trolecode,$tstatus,$tstart,$tend) = @_;
my @pwhere = ();
if (exists($env{$rolekey}) && $env{$rolekey} ne '') {	if (exists($env{$rolekey}) && $env{$rolekey} ne '') {
(undef,undef,$$role,@pwhere)=split(/\./,$rolekey);	my ($one,$two) = split(m{\./},$rolekey,2);
	(undef,undef,$$role) = split(/\./,$one,3);
unless (!defined($$role) \|\| $$role eq '') {	unless (!defined($$role) \|\| $$role eq '') {
$$where=join('.',@pwhere);	$$where = '/'.$two;
$$trolecode=$$role.'.'.$$where;	$$trolecode=$$role.'.'.$$where;
($$tstart,$$tend)=split(/\./,$env{$rolekey});	($$tstart,$$tend)=split(/\./,$env{$rolekey});
$$tstatus='is';	$$tstatus='is';
Line 5240 sub role_status {	Line 6251 sub role_status {
push(@rolecodes,$$role);	push(@rolecodes,$$role);
&standard_roleprivs(\%allroles,$$role,$tdomain,$spec,$trest,$$where);	&standard_roleprivs(\%allroles,$$role,$tdomain,$spec,$trest,$$where);
}	}
my ($author,$adv)= &set_userprivs(\%userroles,\%allroles,\%allgroups,\%groups_roles);	my ($author,$adv,$rar)= &set_userprivs(\%userroles,\%allroles,\%allgroups,
	\%groups_roles);
&appenv(\%userroles,\@rolecodes);	&appenv(\%userroles,\@rolecodes);
&log($env{'user.domain'},$env{'user.name'},$env{'user.home'},"Role ".$role);	&log($env{'user.domain'},$env{'user.name'},$env{'user.home'},"Role ".$spec);
}	}
}	}
$$tstatus = 'is';	$$tstatus = 'is';
Line 5318 sub delete_env_groupprivs {	Line 6330 sub delete_env_groupprivs {
}	}

sub check_adhoc_privs {	sub check_adhoc_privs {
my ($cdom,$cnum,$update,$refresh,$now,$checkrole,$caller) = @_;	my ($cdom,$cnum,$update,$refresh,$now,$checkrole,$caller,$sec) = @_;
my $cckey = 'user.role.'.$checkrole.'./'.$cdom.'/'.$cnum;	my $cckey = 'user.role.'.$checkrole.'./'.$cdom.'/'.$cnum;
	if ($sec) {
	$cckey .= '/'.$sec;
	}
my $setprivs;	my $setprivs;
if ($env{$cckey}) {	if ($env{$cckey}) {
my ($role,$where,$trolecode,$tstart,$tend,$tremark,$tstatus,$tpstart,$tpend);	my ($role,$where,$trolecode,$tstart,$tend,$tremark,$tstatus,$tpstart,$tpend);
&role_status($cckey,$update,$refresh,$now,\$role,\$where,\$trolecode,\$tstatus,\$tstart,\$tend);	&role_status($cckey,$update,$refresh,$now,\$role,\$where,\$trolecode,\$tstatus,\$tstart,\$tend);
unless (($tstatus eq 'is') \|\| ($tstatus eq 'will_not')) {	unless (($tstatus eq 'is') \|\| ($tstatus eq 'will_not')) {
&set_adhoc_privileges($cdom,$cnum,$checkrole,$caller);	&set_adhoc_privileges($cdom,$cnum,$checkrole,$caller,$sec);
$setprivs = 1;	$setprivs = 1;
}	}
} else {	} else {
&set_adhoc_privileges($cdom,$cnum,$checkrole,$caller);	&set_adhoc_privileges($cdom,$cnum,$checkrole,$caller,$sec);
$setprivs = 1;	$setprivs = 1;
}	}
return $setprivs;	return $setprivs;
}	}

sub set_adhoc_privileges {	sub set_adhoc_privileges {
# role can be cc or ca	# role can be cc, ca, or cr/<dom>/<dom>-domainconfig/role
my ($dcdom,$pickedcourse,$role,$caller) = @_;	my ($dcdom,$pickedcourse,$role,$caller,$sec) = @_;
my $area = '/'.$dcdom.'/'.$pickedcourse;	my $area = '/'.$dcdom.'/'.$pickedcourse;
	if ($sec ne '') {
	$area .= '/'.$sec;
	}
my $spec = $role.'.'.$area;	my $spec = $role.'.'.$area;
my %userroles = &set_arearole($role,$area,'','',$env{'user.domain'},	my %userroles = &set_arearole($role,$area,'','',$env{'user.domain'},
$env{'user.name'});	$env{'user.name'},1);
my %ccrole = ();	my %rolehash = ();
&standard_roleprivs(\%ccrole,$role,$dcdom,$spec,$pickedcourse,$area);	if ($role =~ m{^\Qcr/$dcdom/$dcdom\E\-domainconfig/(\w+)$}) {
my ($author,$adv)= &set_userprivs(\%userroles,\%ccrole);	my $rolename = $1;
	&custom_roleprivs(\%rolehash,$role,$dcdom,$pickedcourse,$spec,$area);
	my %domdef = &get_domain_defaults($dcdom);
	if (ref($domdef{'adhocroles'}) eq 'HASH') {
	if (ref($domdef{'adhocroles'}{$rolename}) eq 'HASH') {
	&appenv({'request.role.desc' => $domdef{'adhocroles'}{$rolename}{'desc'},});
	}
	}
	} else {
	&standard_roleprivs(\%rolehash,$role,$dcdom,$spec,$pickedcourse,$area);
	}
	my ($author,$adv,$rar)= &set_userprivs(\%userroles,\%rolehash);
&appenv(\%userroles,[$role,'cm']);	&appenv(\%userroles,[$role,'cm']);
&log($env{'user.domain'},$env{'user.name'},$env{'user.home'},"Role ".$role);	&log($env{'user.domain'},$env{'user.name'},$env{'user.home'},"Role ".$spec);
unless ($caller eq 'constructaccess' && $env{'request.course.id'}) {	unless ($caller eq 'constructaccess' && $env{'request.course.id'}) {
&appenv( {'request.role' => $spec,	&appenv( {'request.role' => $spec,
'request.role.domain' => $dcdom,	'request.role.domain' => $dcdom,
'request.course.sec' => ''	'request.course.sec' => $sec,
}	}
);	);
my $tadv=0;	my $tadv=0;
Line 5410 sub unserialize {	Line 6439 sub unserialize {
return {} if $rep =~ /^error/;	return {} if $rep =~ /^error/;

my %returnhash=();	my %returnhash=();
foreach my $item (split /\&/, $rep) {	foreach my $item (split(/\&/,$rep)) {
my ($key, $value) = split(/=/, $item, 2);	my ($key, $value) = split(/=/, $item, 2);
$key = unescape($key) unless $escapedkeys;	$key = unescape($key) unless $escapedkeys;
next if $key =~ /^error: 2 /;	next if $key =~ /^error: 2 /;
$returnhash{$key} = Apache::lonnet::thaw_unescape($value);	$returnhash{$key} = &thaw_unescape($value);
}	}
#return %returnhash;	#return %returnhash;
return \%returnhash;	return \%returnhash;
Line 5428 sub dump {	Line 6457 sub dump {
if (!$uname) { $uname=$env{'user.name'}; }	if (!$uname) { $uname=$env{'user.name'}; }
my $uhome=&homeserver($uname,$udomain);	my $uhome=&homeserver($uname,$udomain);

my $reply;	if ($regexp) {
	$regexp=&escape($regexp);
	} else {
	$regexp='.';
	}
if (grep { $_ eq $uhome } current_machine_ids()) {	if (grep { $_ eq $uhome } current_machine_ids()) {
# user is hosted on this machine	# user is hosted on this machine
$reply = LONCAPA::Lond::dump_with_regexp(join(":", ($udomain,	my $reply = LONCAPA::Lond::dump_with_regexp(join(":", ($udomain,
$uname, $namespace, $regexp, $range)), $loncaparevs{$uhome});	$uname, $namespace, $regexp, $range)), $perlvar{'lonVersion'});
return %{unserialize($reply, $escapedkeys)};	return %{unserialize($reply, $escapedkeys)};
}	}
if ($regexp) {
$regexp=&escape($regexp);
} else {
$regexp='.';
}
my $rep=&reply("dump:$udomain:$uname:$namespace:$regexp:$range",$uhome);	my $rep=&reply("dump:$udomain:$uname:$namespace:$regexp:$range",$uhome);
my @pairs=split(/\&/,$rep);	my @pairs=split(/\&/,$rep);
my %returnhash=();	my %returnhash=();
Line 5501 sub currentdump {	Line 6529 sub currentdump {
#	#
my %returnhash=();	my %returnhash=();
#	#
if ($rep eq "unknown_cmd") {	if ($rep eq 'unknown_cmd') {
# an old lond will not know currentdump	# an old lond will not know currentdump
# Do a dump and make it look like a currentdump	# Do a dump and make it look like a currentdump
my @tmp = &dumpstore($courseid,$sdom,$sname,'.');	my @tmp = &dumpstore($courseid,$sdom,$sname,'.');
Line 5617 sub newput {	Line 6645 sub newput {
# --------------------------------------------------------- putstore interface	# --------------------------------------------------------- putstore interface

sub putstore {	sub putstore {
my ($namespace,$symb,$version,$storehash,$udomain,$uname)=@_;	my ($namespace,$symb,$version,$storehash,$udomain,$uname,$tolog)=@_;
if (!$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);
Line 5631 sub putstore {	Line 6659 sub putstore {
my $reply =	my $reply =
&reply("putstore:$udomain:$uname:$namespace:$esc_symb:$esc_v:$items",	&reply("putstore:$udomain:$uname:$namespace:$esc_symb:$esc_v:$items",
$uhome);	$uhome);
	if (($tolog) && ($reply eq 'ok')) {
	my $namevalue='';
	foreach my $key (keys(%{$storehash})) {
	$namevalue.=&escape($key).'='.&freeze_escape($storehash->{$key}).'&';
	}
	$namevalue .= 'ip='.&escape($ENV{'REMOTE_ADDR'}).
	'&host='.&escape($perlvar{'lonHostID'}).
	'&version='.$esc_v.
	'&by='.&escape($env{'user.name'}.':'.$env{'user.domain'});
	&Apache::lonnet::courselog($symb.':'.$uname.':'.$udomain.':PUTSTORE:'.$namevalue);
	}
if ($reply eq 'unknown_cmd') {	if ($reply eq 'unknown_cmd') {
# gfall back to way things use to be done	# gfall back to way things use to be done
return &old_putstore($namespace,$symb,$version,$storehash,$udomain,	return &old_putstore($namespace,$symb,$version,$storehash,$udomain,
Line 5724 sub tmpget {	Line 6763 sub tmpget {
if (!defined($server)) { $server = $perlvar{'lonHostID'}; }	if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
my $rep=&reply("tmpget:$token",$server);	my $rep=&reply("tmpget:$token",$server);
my %returnhash;	my %returnhash;
	if ($rep =~ /^(con_lost\|error\|no_such_host)/i) {
	return %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($value);
}	}
return %returnhash;	return %returnhash;
Line 5789 sub get_timebased_id {	Line 6830 sub get_timebased_id {
my %inuse = &Apache::lonnet::dump('nohist_'.$namespace,$cdom,$cnum,$prefix);	my %inuse = &Apache::lonnet::dump('nohist_'.$namespace,$cdom,$cnum,$prefix);
my $id = time;	my $id = time;
$newid = $id;	$newid = $id;
	if ($idtype eq 'addcode') {
	$newid .= &sixnum_code();
	}
my $idtries = 0;	my $idtries = 0;
while (exists($inuse{$prefix."\0".$newid}) && $idtries < $maxtries) {	while (exists($inuse{$prefix."\0".$newid}) && $idtries < $maxtries) {
if ($idtype eq 'concat') {	if ($idtype eq 'concat') {
$newid = $id.$idtries;	$newid = $id.$idtries;
	} elsif ($idtype eq 'addcode') {
	$newid = $newid.&sixnum_code();
} else {	} else {
$newid ++;	$newid ++;
}	}
Line 5809 sub get_timebased_id {	Line 6855 sub get_timebased_id {
$error = 'error saving new item: '.$putresult;	$error = 'error saving new item: '.$putresult;
}	}
} else {	} else {
	undef($newid);
$error = ('error: no unique suffix available for the new item ');	$error = ('error: no unique suffix available for the new item ');
}	}
# remove lock	# remove lock
Line 5817 sub get_timebased_id {	Line 6864 sub get_timebased_id {
} else {	} else {
$error = "error: could not obtain lockfile\n";	$error = "error: could not obtain lockfile\n";
$dellock = 'ok';	$dellock = 'ok';
	if (($prefix eq 'paste') && ($namespace eq 'courseeditor') && ($keyid eq 'num')) {
	$dellock = 'nolock';
	}
}	}
return ($newid,$dellock,$error);	return ($newid,$dellock,$error);
}	}

	sub sixnum_code {
	my $code;
	for (0..6) {
	$code .= int( rand(9) );
	}
	return $code;
	}

# -------------------------------------------------- portfolio access checking	# -------------------------------------------------- portfolio access checking

sub portfolio_access {	sub portfolio_access {
my ($requrl) = @_;	my ($requrl,$clientip) = @_;
my (undef,$udom,$unum,$file_name,$group) = &parse_portfolio_url($requrl);	my (undef,$udom,$unum,$file_name,$group) = &parse_portfolio_url($requrl);
my $result = &get_portfolio_access($udom,$unum,$file_name,$group);	my $result = &get_portfolio_access($udom,$unum,$file_name,$group,$clientip);
if ($result) {	if ($result) {
my %setters;	my %setters;
if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {	if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
Line 5852 sub portfolio_access {	Line 6910 sub portfolio_access {
}	}

sub get_portfolio_access {	sub get_portfolio_access {
my ($udom,$unum,$file_name,$group,$access_hash) = @_;	my ($udom,$unum,$file_name,$group,$clientip,$access_hash) = @_;

if (!ref($access_hash)) {	if (!ref($access_hash)) {
my $current_perms = &get_portfile_permissions($udom,$unum);	my $current_perms = &get_portfile_permissions($udom,$unum);
Line 5861 sub get_portfolio_access {	Line 6919 sub get_portfolio_access {
$access_hash = $access_controls{$file_name};	$access_hash = $access_controls{$file_name};
}	}

my ($public,$guest,@domains,@users,@courses,@groups);	my ($public,$guest,@domains,@users,@courses,@groups,@ips);
my $now = time;	my $now = time;
if (ref($access_hash) eq 'HASH') {	if (ref($access_hash) eq 'HASH') {
foreach my $key (keys(%{$access_hash})) {	foreach my $key (keys(%{$access_hash})) {
Line 5885 sub get_portfolio_access {	Line 6943 sub get_portfolio_access {
push(@courses,$key);	push(@courses,$key);
} elsif ($scope eq 'group') {	} elsif ($scope eq 'group') {
push(@groups,$key);	push(@groups,$key);
	} elsif ($scope eq 'ip') {
	push(@ips,$key);
}	}
}	}
if ($public) {	if ($public) {
return 'ok';	return 'ok';
	} elsif (@ips > 0) {
	my $allowed;
	foreach my $ipkey (@ips) {
	if (ref($access_hash->{$ipkey}{'ip'}) eq 'ARRAY') {
	if (&Apache::loncommon::check_ip_acc(join(',',@{$access_hash->{$ipkey}{'ip'}}),$clientip)) {
	$allowed = 1;
	last;
	}
	}
	}
	if ($allowed) {
	return 'ok';
	}
}	}
if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {	if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
if ($guest) {	if ($guest) {
Line 6075 sub usertools_access {	Line 7148 sub usertools_access {
official => 1,	official => 1,
unofficial => 1,	unofficial => 1,
community => 1,	community => 1,
	textbook => 1,
	placement => 1,
	lti => 1,
);	);
} elsif ($context eq 'requestauthor') {	} elsif ($context eq 'requestauthor') {
%tools = (	%tools = (
Line 6090 sub usertools_access {	Line 7166 sub usertools_access {
}	}
return if (!defined($tools{$tool}));	return if (!defined($tools{$tool}));

if ((!defined($udom)) \|\| (!defined($uname))) {	if (($udom eq '') \|\| ($uname eq '')) {
$udom = $env{'user.domain'};	$udom = $env{'user.domain'};
$uname = $env{'user.name'};	$uname = $env{'user.name'};
}	}
Line 6271 sub is_advanced_user {	Line 7347 sub is_advanced_user {
}	}

sub check_can_request {	sub check_can_request {
my ($dom,$can_request,$request_domains) = @_;	my ($dom,$can_request,$request_domains,$uname,$udom) = @_;
my $canreq = 0;	my $canreq = 0;
	if (($env{'user.name'} ne '') && ($env{'user.domain'} ne '')) {
	$uname = $env{'user.name'};
	$udom = $env{'user.domain'};
	}
my ($types,$typename) = &Apache::loncommon::course_types();	my ($types,$typename) = &Apache::loncommon::course_types();
my @options = ('approval','validate','autolimit');	my @options = ('approval','validate','autolimit');
my $optregex = join('\|',@options);	my $optregex = join('\|',@options);
if ((ref($can_request) eq 'HASH') && (ref($types) eq 'ARRAY')) {	if ((ref($can_request) eq 'HASH') && (ref($types) eq 'ARRAY')) {
foreach my $type (@{$types}) {	foreach my $type (@{$types}) {
if (&usertools_access($env{'user.name'},	if (&usertools_access($uname,$udom,$type,undef,
$env{'user.domain'},	'requestcourses')) {
$type,undef,'requestcourses')) {
$canreq ++;	$canreq ++;
if (ref($request_domains) eq 'HASH') {	if (ref($request_domains) eq 'HASH') {
push(@{$request_domains->{$type}},$env{'user.domain'});	push(@{$request_domains->{$type}},$udom);
}	}
if ($dom eq $env{'user.domain'}) {	if ($dom eq $udom) {
$can_request->{$type} = 1;	$can_request->{$type} = 1;
}	}
}	}
if ($env{'environment.reqcrsotherdom.'.$type} ne '') {	if (($env{'user.name'} ne '') && ($env{'user.domain'} ne '') &&
	($env{'environment.reqcrsotherdom.'.$type} ne '')) {
my @curr = split(',',$env{'environment.reqcrsotherdom.'.$type});	my @curr = split(',',$env{'environment.reqcrsotherdom.'.$type});
if (@curr > 0) {	if (@curr > 0) {
foreach my $item (@curr) {	foreach my $item (@curr) {
Line 6306 sub check_can_request {	Line 7386 sub check_can_request {
}	}
}	}
}	}
unless($dom eq $env{'user.domain'}) {	unless ($dom eq $env{'user.domain'}) {
$canreq ++;	$canreq ++;
if (grep(/^\Q$dom\E:($optregex)(=?\d*)$/,@curr)) {	if (grep(/^\Q$dom\E:($optregex)(=?\d*)$/,@curr)) {
$can_request->{$type} = 1;	$can_request->{$type} = 1;
Line 6371 sub customaccess {	Line 7451 sub customaccess {
# ------------------------------------------------- Check for a user privilege	# ------------------------------------------------- Check for a user privilege

sub allowed {	sub allowed {
my ($priv,$uri,$symb,$role)=@_;	my ($priv,$uri,$symb,$role,$clientip,$noblockcheck)=@_;
my $ver_orguri=$uri;	my $ver_orguri=$uri;
$uri=&deversion($uri);	$uri=&deversion($uri);
my $orguri=$uri;	my $orguri=$uri;
Line 6388 sub allowed {	Line 7468 sub allowed {

if (defined($env{'allowed.'.$priv})) { return $env{'allowed.'.$priv}; }	if (defined($env{'allowed.'.$priv})) { return $env{'allowed.'.$priv}; }
# Free bre access to adm and meta resources	# Free bre access to adm and meta resources
if (((($uri=~/^adm\//) && ($uri !~ m{/(?:smppg\|bulletinboard)$}))	if (((($uri=~/^adm\//) && ($uri !~ m{/(?:smppg\|bulletinboard\|ext\.tool)$}))
\|\| (($uri=~/\.meta$/) && ($uri!~m\|^uploaded/\|) ))	\|\| (($uri=~/\.meta$/) && ($uri!~m\|^uploaded/\|) ))
&& ($priv eq 'bre')) {	&& ($priv eq 'bre')) {
return 'F';	return 'F';
Line 6436 sub allowed {	Line 7516 sub allowed {
# Free bre to public access	# Free bre to public access

if ($priv eq 'bre') {	if ($priv eq 'bre') {
my $copyright=&metadata($uri,'copyright');	my $copyright;
	unless ($uri =~ /ext\.tool/) {
	$copyright=&metadata($uri,'copyright');
	}
if (($copyright eq 'public') && (!$env{'request.course.id'})) {	if (($copyright eq 'public') && (!$env{'request.course.id'})) {
return 'F';	return 'F';
}	}
Line 6566 sub allowed {	Line 7649 sub allowed {
if ($match) {	if ($match) {
if ($env{'user.priv.'.$env{'request.role'}.'./'}	if ($env{'user.priv.'.$env{'request.role'}.'./'}
=~/\Q$priv\E\&([^\:]*)/) {	=~/\Q$priv\E\&([^\:]*)/) {
my @blockers = &has_comm_blocking($priv,$symb,$uri);	my $value = $1;
if (@blockers > 0) {	if ($noblockcheck) {
$thisallowed = 'B';	$thisallowed.=$value;
} else {	} else {
$thisallowed.=$1;	my @blockers = &has_comm_blocking($priv,$symb,$uri);
	if (@blockers > 0) {
	$thisallowed = 'B';
	} else {
	$thisallowed.=$value;
	}
}	}
}	}
} else {	} else {
Line 6582 sub allowed {	Line 7670 sub allowed {
$refuri=&declutter($refuri);	$refuri=&declutter($refuri);
my ($match) = &is_on_map($refuri);	my ($match) = &is_on_map($refuri);
if ($match) {	if ($match) {
my @blockers = &has_comm_blocking($priv,$symb,$refuri);	if ($noblockcheck) {
if (@blockers > 0) {
$thisallowed = 'B';
} else {
$thisallowed='F';	$thisallowed='F';
	} else {
	my @blockers = &has_comm_blocking($priv,$symb,$refuri);
	if (@blockers > 0) {
	$thisallowed = 'B';
	} else {
	$thisallowed='F';
	}
}	}
}	}
}	}
Line 6598 sub allowed {	Line 7690 sub allowed {
&& $thisallowed ne 'F'	&& $thisallowed ne 'F'
&& $thisallowed ne '2'	&& $thisallowed ne '2'
&& &is_portfolio_url($uri)) {	&& &is_portfolio_url($uri)) {
$thisallowed = &portfolio_access($uri);	$thisallowed = &portfolio_access($uri,$clientip);
}	}

# 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 6641 sub allowed {	Line 7733 sub allowed {
=~/\Q$priv\E\&([^\:]*)/) {	=~/\Q$priv\E\&([^\:]*)/) {
my $value = $1;	my $value = $1;
if ($priv eq 'bre') {	if ($priv eq 'bre') {
my @blockers = &has_comm_blocking($priv,$symb,$uri);	if ($noblockcheck) {
if (@blockers > 0) {
$thisallowed = 'B';
} else {
$thisallowed.=$value;	$thisallowed.=$value;
	} else {
	my @blockers = &has_comm_blocking($priv,$symb,$uri);
	if (@blockers > 0) {
	$thisallowed = 'B';
	} else {
	$thisallowed.=$value;
	}
}	}
} else {	} else {
$thisallowed.=$value;	$thisallowed.=$value;
Line 6679 sub allowed {	Line 7775 sub allowed {
=~/\Q$priv\E\&([^\:]*)/) {	=~/\Q$priv\E\&([^\:]*)/) {
my $value = $1;	my $value = $1;
if ($priv eq 'bre') {	if ($priv eq 'bre') {
my @blockers = &has_comm_blocking($priv,$symb,$refuri);	if ($noblockcheck) {
if (@blockers > 0) {
$thisallowed = 'B';
} else {
$thisallowed.=$value;	$thisallowed.=$value;
	} else {
	my @blockers = &has_comm_blocking($priv,$symb,$refuri);
	if (@blockers > 0) {
	$thisallowed = 'B';
	} else {
	$thisallowed.=$value;
	}
}	}
} else {	} else {
$thisallowed.=$value;	$thisallowed.=$value;
Line 6791 sub allowed {	Line 7891 sub allowed {
my $unamedom=$env{'user.name'}.':'.$env{'user.domain'};	my $unamedom=$env{'user.name'}.':'.$env{'user.domain'};
if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.roles.denied'}	if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.roles.denied'}
=~/\Q$rolecode\E/) {	=~/\Q$rolecode\E/) {
if (($priv ne 'pch') && ($priv ne 'plc')) {	if (($priv ne 'pch') && ($priv ne 'plc') && ($priv ne 'pac')) {
&logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.	&logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode.' in '.	'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode.' in '.
$env{'request.course.id'});	$env{'request.course.id'});
Line 6801 sub allowed {	Line 7901 sub allowed {

if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.users.denied'}	if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.users.denied'}
=~/\Q$unamedom\E/) {	=~/\Q$unamedom\E/) {
if (($priv ne 'pch') && ($priv ne 'plc')) {	if (($priv ne 'pch') && ($priv ne 'plc') && ($priv ne 'pac')) {
&logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.	&logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.
'Denied by user: '.$priv.' for '.$uri.' as '.$unamedom.' in '.	'Denied by user: '.$priv.' for '.$uri.' as '.$unamedom.' in '.
$env{'request.course.id'});	$env{'request.course.id'});
Line 6859 sub constructaccess {	Line 7959 sub constructaccess {
my ($ownername,$ownerdomain,$ownerhome);	my ($ownername,$ownerdomain,$ownerhome);

($ownerdomain,$ownername) =	($ownerdomain,$ownername) =
($url=~ m{^(?:\Q$perlvar{'lonDocRoot'}\E\|)/priv/($match_domain)/($match_username)/});	($url=~ m{^(?:\Q$perlvar{'lonDocRoot'}\E\|)(?:/daxepage\|/daxeopen)?/priv/($match_domain)/($match_username)(?:/\|$)});

# The URL does not really point to any authorspace, forget it	# The URL does not really point to any authorspace, forget it
unless (($ownername) && ($ownerdomain)) { return ''; }	unless (($ownername) && ($ownerdomain)) { return ''; }
Line 6880 sub constructaccess {	Line 7980 sub constructaccess {
$ownerhome = &homeserver($ownername,$ownerdomain);	$ownerhome = &homeserver($ownername,$ownerdomain);
return ($ownername,$ownerdomain,$ownerhome);	return ($ownername,$ownerdomain,$ownerhome);
}	}
	if ($env{'request.course.id'}) {
	if (($ownername eq $env{'course.'.$env{'request.course.id'}.'.num'}) &&
	($ownerdomain eq $env{'course.'.$env{'request.course.id'}.'.domain'})) {
	if (&allowed('mdc',$env{'request.course.id'})) {
	$ownerhome = $env{'course.'.$env{'request.course.id'}.'.home'};
	return ($ownername,$ownerdomain,$ownerhome);
	}
	}
	}
}	}

# We don't have any access right now. If we are not possibly going to do anything about this,	# We don't have any access right now. If we are not possibly going to do anything about this,
Line 6914 sub constructaccess {	Line 8023 sub constructaccess {
return '';	return '';
}	}

	# ----------------------------------------------------------- Content Blocking

	{
	# Caches for faster Course Contents display where content blocking
	# is in operation (i.e., interval param set) for timed quiz.
	#
	# User for whom data are being temporarily cached.
	my $cacheduser='';
	# Cached blockers for this user (a hash of blocking items).
	my %cachedblockers=();
	# When the data were last cached.
	my $cachedlast='';

	sub load_all_blockers {
	my ($uname,$udom,$blocks)=@_;
	if (($uname ne '') && ($udom ne '')) {
	if (($cacheduser eq $uname.':'.$udom) &&
	(abs($cachedlast-time)<5)) {
	return;
	}
	}
	$cachedlast=time;
	$cacheduser=$uname.':'.$udom;
	%cachedblockers = &get_commblock_resources($blocks);
	}

sub get_comm_blocks {	sub get_comm_blocks {
my ($cdom,$cnum) = @_;	my ($cdom,$cnum) = @_;
if ($cdom eq '' \|\| $cnum eq '') {	if ($cdom eq '' \|\| $cnum eq '') {
Line 6934 sub get_comm_blocks {	Line 8069 sub get_comm_blocks {
return %commblocks;	return %commblocks;
}	}

sub has_comm_blocking {	sub get_commblock_resources {
my ($priv,$symb,$uri,$blocks) = @_;	my ($blocks) = @_;
return unless ($env{'request.course.id'});	my %blockers = ();
return unless ($priv eq 'bre');	return %blockers unless ($env{'request.course.id'});
return if ($env{'user.priv.'.$env{'request.role'}} =~/evb\&([^\:]*)/);	return %blockers if ($env{'user.priv.'.$env{'request.role'}} =~/evb\&([^\:]*)/);
my %commblocks;	my %commblocks;
if (ref($blocks) eq 'HASH') {	if (ref($blocks) eq 'HASH') {
%commblocks = %{$blocks};	%commblocks = %{$blocks};
} else {	} else {
%commblocks = &get_comm_blocks();	%commblocks = &get_comm_blocks();
}	}
return unless (keys(%commblocks) > 0);	return %blockers unless (keys(%commblocks) > 0);
if (!$symb) { $symb=&symbread($uri,1); }
my ($map,$resid,undef)=&decode_symb($symb);
my %tocheck = (
maps => $map,
resources => $symb,
);
my @blockers;
my $now = time;
my $navmap = Apache::lonnavmaps::navmap->new();	my $navmap = Apache::lonnavmaps::navmap->new();
	return %blockers unless (ref($navmap));
	my $now = time;
foreach my $block (keys(%commblocks)) {	foreach my $block (keys(%commblocks)) {
if ($block =~ /^(\d+)____(\d+)$/) {	if ($block =~ /^(\d+)____(\d+)$/) {
my ($start,$end) = ($1,$2);	my ($start,$end) = ($1,$2);
Line 6962 sub has_comm_blocking {	Line 8091 sub has_comm_blocking {
if (ref($commblocks{$block}{'blocks'}) eq 'HASH') {	if (ref($commblocks{$block}{'blocks'}) eq 'HASH') {
if (ref($commblocks{$block}{'blocks'}{'docs'}) eq 'HASH') {	if (ref($commblocks{$block}{'blocks'}{'docs'}) eq 'HASH') {
if (ref($commblocks{$block}{'blocks'}{'docs'}{'maps'}) eq 'HASH') {	if (ref($commblocks{$block}{'blocks'}{'docs'}{'maps'}) eq 'HASH') {
if ($commblocks{$block}{'blocks'}{'docs'}{'maps'}{$map}) {	if (keys(%{$commblocks{$block}{'blocks'}{'docs'}{'maps'}})) {
unless (grep(/^\Q$block\E$/,@blockers)) {	$blockers{$block}{maps} = $commblocks{$block}{'blocks'}{'docs'}{'maps'};
push(@blockers,$block);
}
}	}
}	}
if (ref($commblocks{$block}{'blocks'}{'docs'}{'resources'}) eq 'HASH') {	if (ref($commblocks{$block}{'blocks'}{'docs'}{'resources'}) eq 'HASH') {
if ($commblocks{$block}{'blocks'}{'docs'}{'resources'}{$symb}) {	if (keys(%{$commblocks{$block}{'blocks'}{'docs'}{'resources'}})) {
unless (grep(/^\Q$block\E$/,@blockers)) {	$blockers{$block}{'resources'} = $commblocks{$block}{'blocks'}{'docs'}{'resources'};
push(@blockers,$block);
}
}	}
}	}
}	}
Line 6983 sub has_comm_blocking {	Line 8108 sub has_comm_blocking {
my @to_test;	my @to_test;
if (ref($commblocks{$block}{'blocks'}) eq 'HASH') {	if (ref($commblocks{$block}{'blocks'}) eq 'HASH') {
if (ref($commblocks{$block}{'blocks'}{'docs'}) eq 'HASH') {	if (ref($commblocks{$block}{'blocks'}{'docs'}) eq 'HASH') {
my $check_interval;	my @interval;
if (&check_docs_block($commblocks{$block}{'blocks'}{'docs'},\%tocheck)) {	my $type = 'map';
my @interval;	if ($item eq 'course') {
my $type = 'map';	$type = 'course';
if ($item eq 'course') {	@interval=&EXT("resource.0.interval");
$type = 'course';	} else {
@interval=&EXT("resource.0.interval");	if ($item =~ /___\d+___/) {
	$type = 'resource';
	@interval=&EXT("resource.0.interval",$item);
	if (ref($navmap)) {
	my $res = $navmap->getBySymb($item);
	push(@to_test,$res);
	}
} else {	} else {
if ($item =~ /___\d+___/) {	my $mapsymb = &symbread($item,1);
$type = 'resource';	if ($mapsymb) {
@interval=&EXT("resource.0.interval",$item);	if (ref($navmap)) {
if (ref($navmap)) {	my $mapres = $navmap->getBySymb($mapsymb);
my $res = $navmap->getBySymb($item);	@to_test = $mapres->retrieveResources($mapres,undef,0,0,0,1);
push(@to_test,$res);	foreach my $res (@to_test) {
}	my $symb = $res->symb();
} else {	next if ($symb eq $mapsymb);
my $mapsymb = &symbread($item,1);	if ($symb ne '') {
if ($mapsymb) {	@interval=&EXT("resource.0.interval",$symb);
if (ref($navmap)) {	if ($interval[1] eq 'map') {
my $mapres = $navmap->getBySymb($mapsymb);
@to_test = $mapres->retrieveResources($mapres,undef,0,1);
foreach my $res (@to_test) {
my $symb = $res->symb();
next if ($symb eq $mapsymb);
if ($symb ne '') {
@interval=&EXT("resource.0.interval",$symb);
last;	last;
}	}
}	}
Line 7016 sub has_comm_blocking {	Line 8140 sub has_comm_blocking {
}	}
}	}
}	}
if ($interval[0] =~ /\d+/) {	}
my $first_access;	if ($interval[0] =~ /^(\d+)/) {
if ($type eq 'resource') {	my $timelimit = $1;
$first_access=&get_first_access($interval[1],$item);	my $first_access;
} elsif ($type eq 'map') {	if ($type eq 'resource') {
$first_access=&get_first_access($interval[1],undef,$item);	$first_access=&get_first_access($interval[1],$item);
} else {	} elsif ($type eq 'map') {
$first_access=&get_first_access($interval[1]);	$first_access=&get_first_access($interval[1],undef,$item);
}	} else {
if ($first_access) {	$first_access=&get_first_access($interval[1]);
my $timesup = $first_access+$interval[0];	}
if ($timesup > $now) {	if ($first_access) {
foreach my $res (@to_test) {	my $timesup = $first_access+$timelimit;
if ($res->is_problem()) {	if ($timesup > $now) {
if ($res->completable()) {	my $activeblock;
unless (grep(/^\Q$block\E$/,@blockers)) {	foreach my $res (@to_test) {
push(@blockers,$block);	if ($res->answerable()) {
}	$activeblock = 1;
last;	last;
}	}
	}
	if ($activeblock) {
	if (ref($commblocks{$block}{'blocks'}{'docs'}{'maps'}) eq 'HASH') {
	if (keys(%{$commblocks{$block}{'blocks'}{'docs'}{'maps'}})) {
	$blockers{$block}{'maps'} = $commblocks{$block}{'blocks'}{'docs'}{'maps'};
	}
	}
	if (ref($commblocks{$block}{'blocks'}{'docs'}{'resources'}) eq 'HASH') {
	if (keys(%{$commblocks{$block}{'blocks'}{'docs'}{'resources'}})) {
	$blockers{$block}{'resources'} = $commblocks{$block}{'blocks'}{'docs'}{'resources'};
}	}
}	}
}	}
Line 7046 sub has_comm_blocking {	Line 8180 sub has_comm_blocking {
}	}
}	}
}	}
return @blockers;	return %blockers;
}	}

sub check_docs_block {	sub has_comm_blocking {
my ($docsblock,$tocheck) =@_;	my ($priv,$symb,$uri,$blocks) = @_;
if ((ref($docsblock) ne 'HASH') \|\| (ref($tocheck) ne 'HASH')) {	my @blockers;
return;	return unless ($env{'request.course.id'});
	return unless ($priv eq 'bre');
	return if ($env{'user.priv.'.$env{'request.role'}} =~/evb\&([^\:]*)/);
	return if ($env{'request.state'} eq 'construct');
	&load_all_blockers($env{'user.name'},$env{'user.domain'},$blocks);
	return unless (keys(%cachedblockers) > 0);
	my (%possibles,@symbs);
	if (!$symb) {
	$symb = &symbread($uri,1,1,1,\%possibles);
}	}
if (ref($docsblock->{'maps'}) eq 'HASH') {	if ($symb) {
if ($tocheck->{'maps'}) {	@symbs = ($symb);
if ($docsblock->{'maps'}{$tocheck->{'maps'}}) {	} elsif (keys(%possibles)) {
return 1;	@symbs = keys(%possibles);
	}
	my $noblock;
	foreach my $symb (@symbs) {
	last if ($noblock);
	my ($map,$resid,$resurl)=&decode_symb($symb);
	foreach my $block (keys(%cachedblockers)) {
	if ($block =~ /^firstaccess____(.+)$/) {
	my $item = $1;
	if (($item eq $map) \|\| ($item eq $symb)) {
	$noblock = 1;
	last;
	}
}	}
}	if (ref($cachedblockers{$block}) eq 'HASH') {
}	if (ref($cachedblockers{$block}{'resources'}) eq 'HASH') {
if (ref($docsblock->{'resources'}) eq 'HASH') {	if ($cachedblockers{$block}{'resources'}{$symb}) {
if ($tocheck->{'resources'}) {	unless (grep(/^\Q$block\E$/,@blockers)) {
if ($docsblock->{'resources'}{$tocheck->{'resources'}}) {	push(@blockers,$block);
return 1;	}
	}
	}
	}
	if (ref($cachedblockers{$block}{'maps'}) eq 'HASH') {
	if ($cachedblockers{$block}{'maps'}{$map}) {
	unless (grep(/^\Q$block\E$/,@blockers)) {
	push(@blockers,$block);
	}
	}
}	}
}	}
}	}
return;	return if ($noblock);
	return @blockers;
}	}
	}

	# -------------------------------- Deversion and split uri into path an filename

#	#
# Removes the versino from a URI and	# Removes the version from a URI and
# splits it in to its filename and path to the filename.	# splits it in to its filename and path to the filename.
# Seems like File::Basename could have done this more clearly.	# Seems like File::Basename could have done this more clearly.
# Parameters:	# Parameters:
Line 7140 sub get_symb_from_alias {	Line 8307 sub get_symb_from_alias {

sub definerole {	sub definerole {
if (allowed('mcr','/')) {	if (allowed('mcr','/')) {
my ($rolename,$sysrole,$domrole,$courole)=@_;	my ($rolename,$sysrole,$domrole,$courole,$uname,$udom)=@_;
foreach my $role (split(':',$sysrole)) {	foreach my $role (split(':',$sysrole)) {
my ($crole,$cqual)=split(/\&/,$role);	my ($crole,$cqual)=split(/\&/,$role);
if ($pr{'cr:s'}!~/\Q$crole\E/) { return "refused:s:$crole"; }	if ($pr{'cr:s'}!~/\Q$crole\E/) { return "refused:s:$crole"; }
Line 7168 sub definerole {	Line 8335 sub definerole {
}	}
}	}
}	}
	my $uhome;
	if (($uname ne '') && ($udom ne '')) {
	$uhome = &homeserver($uname,$udom);
	return $uhome if ($uhome eq 'no_host');
	} else {
	$uname = $env{'user.name'};
	$udom = $env{'user.domain'};
	$uhome = $env{'user.home'};
	}
my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".	my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
"$env{'user.domain'}:$env{'user.name'}:".	"$udom:$uname:rolesdef_$rolename=".
"rolesdef_$rolename=".
escape($sysrole.'_'.$domrole.'_'.$courole);	escape($sysrole.'_'.$domrole.'_'.$courole);
return reply($command,$env{'user.home'});	return reply($command,$uhome);
} else {	} else {
return 'refused';	return 'refused';
}	}
Line 7181 sub definerole {	Line 8356 sub definerole {
# ---------------- Make a metadata query against the network of library servers	# ---------------- Make a metadata query against the network of library servers

sub metadata_query {	sub metadata_query {
my ($query,$custom,$customshow,$server_array)=@_;	my ($query,$custom,$customshow,$server_array,$domains_hash)=@_;
my %rhash;	my %rhash;
my %libserv = &all_library();	my %libserv = &all_library();
my @server_list = (defined($server_array) ? @$server_array	my @server_list = (defined($server_array) ? @$server_array
: keys(%libserv) );	: keys(%libserv) );
for my $server (@server_list) {	for my $server (@server_list) {
	my $domains = '';
	if (ref($domains_hash) eq 'HASH') {
	$domains = $domains_hash->{$server};
	}
unless ($custom or $customshow) {	unless ($custom or $customshow) {
my $reply=&reply("querysend:".&escape($query),$server);	my $reply=&reply("querysend:".&escape($query).':::'.&escape($domains),$server);
$rhash{$server}=$reply;	$rhash{$server}=$reply;
}	}
else {	else {
my $reply=&reply("querysend:".&escape($query).':'.	my $reply=&reply("querysend:".&escape($query).':'.
&escape($custom).':'.&escape($customshow),	&escape($custom).':'.&escape($customshow).':'.&escape($domains),
$server);	$server);
$rhash{$server}=$reply;	$rhash{$server}=$reply;
}	}
Line 7250 sub update_allusers_table {	Line 8429 sub update_allusers_table {

sub fetch_enrollment_query {	sub fetch_enrollment_query {
my ($context,$affiliatesref,$replyref,$dom,$cnum) = @_;	my ($context,$affiliatesref,$replyref,$dom,$cnum) = @_;
my $homeserver;	my ($homeserver,$sleep,$loopmax);
my $maxtries = 1;	my $maxtries = 1;
if ($context eq 'automated') {	if ($context eq 'automated') {
$homeserver = $perlvar{'lonHostID'};	$homeserver = $perlvar{'lonHostID'};
	$sleep = 2;
	$loopmax = 100;
$maxtries = 10; # will wait for up to 2000s for retrieval of classlist data before timeout	$maxtries = 10; # will wait for up to 2000s for retrieval of classlist data before timeout
} else {	} else {
$homeserver = &homeserver($cnum,$dom);	$homeserver = &homeserver($cnum,$dom);
Line 7271 sub fetch_enrollment_query {	Line 8452 sub fetch_enrollment_query {
&logthis('fetch_enrollment_query: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' context: '.$context.' '.$cnum);	&logthis('fetch_enrollment_query: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' context: '.$context.' '.$cnum);
return 'error: '.$queryid;	return 'error: '.$queryid;
}	}
my $reply = &get_query_reply($queryid);	my $reply = &get_query_reply($queryid,$sleep,$loopmax);
my $tries = 1;	my $tries = 1;
while (($reply=~/^timeout/) && ($tries < $maxtries)) {	while (($reply=~/^timeout/) && ($tries < $maxtries)) {
$reply = &get_query_reply($queryid);	$reply = &get_query_reply($queryid,$sleep,$loopmax);
$tries ++;	$tries ++;
}	}
if ( ($reply =~/^timeout/) \|\| ($reply =~/^error/) ) {	if ( ($reply =~/^timeout/) \|\| ($reply =~/^error/) ) {
&logthis('fetch_enrollment_query error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' context: '.$context.' '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);	&logthis('fetch_enrollment_query error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' context: '.$context.' '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
} else {	} else {
my @responses = split(/:/,$reply);	my @responses = split(/:/,$reply);
if ($homeserver eq $perlvar{'lonHostID'}) {	if (grep { $_ eq $homeserver } &current_machine_ids()) {
foreach my $line (@responses) {	foreach my $line (@responses) {
my ($key,$value) = split(/=/,$line,2);	my ($key,$value) = split(/=/,$line,2);
$$replyref{$key} = $value;	$$replyref{$key} = $value;
Line 7299 sub fetch_enrollment_query {	Line 8480 sub fetch_enrollment_query {
if ($xml_classlist =~ /^error/) {	if ($xml_classlist =~ /^error/) {
&logthis('fetch_enrollment_query - autoretrieve error: '.$xml_classlist.' for '.$filename.' from server: '.$homeserver.' '.$context.' '.$cnum);	&logthis('fetch_enrollment_query - autoretrieve error: '.$xml_classlist.' for '.$filename.' from server: '.$homeserver.' '.$context.' '.$cnum);
} else {	} else {
if ( open(FILE,">$destname") ) {	if ( open(FILE,">",$destname) ) {
print FILE &unescape($xml_classlist);	print FILE &unescape($xml_classlist);
close(FILE);	close(FILE);
} else {	} else {
Line 7316 sub fetch_enrollment_query {	Line 8497 sub fetch_enrollment_query {
}	}

sub get_query_reply {	sub get_query_reply {
my $queryid=shift;	my ($queryid,$sleep,$loopmax) = @_;;
	if (($sleep eq '') \|\| ($sleep !~ /^\d+\.?\d*$/)) {
	$sleep = 0.2;
	}
	if (($loopmax eq '') \|\| ($loopmax =~ /\D/)) {
	$loopmax = 100;
	}
my $replyfile=LONCAPA::tempdir().$queryid;	my $replyfile=LONCAPA::tempdir().$queryid;
my $reply='';	my $reply='';
for (1..100) {	for (1..$loopmax) {
sleep 2;	sleep($sleep);
if (-e $replyfile.'.end') {	if (-e $replyfile.'.end') {
if (open(my $fh,$replyfile)) {	if (open(my $fh,"<",$replyfile)) {
$reply = join('',<$fh>);	$reply = join('',<$fh>);
close($fh);	close($fh);
} else { return 'error: reply_file_error'; }	} else { return 'error: reply_file_error'; }
Line 7439 sub auto_validate_instcode {	Line 8626 sub auto_validate_instcode {
}	}
$response=&unescape(&reply('autovalidateinstcode:'.$cdom.':'.	$response=&unescape(&reply('autovalidateinstcode:'.$cdom.':'.
&escape($instcode).':'.&escape($owner),$homeserver));	&escape($instcode).':'.&escape($owner),$homeserver));
my ($outcome,$description) = map { &unescape($_); } split('&',$response,2);	my ($outcome,$description,$defaultcredits) = map { &unescape($_); } split('&',$response,3);
return ($outcome,$description);	return ($outcome,$description,$defaultcredits);
}	}

sub auto_create_password {	sub auto_create_password {
Line 7682 sub auto_courserequest_checks {	Line 8869 sub auto_courserequest_checks {
}	}

sub auto_courserequest_validation {	sub auto_courserequest_validation {
my ($dom,$owner,$crstype,$inststatuslist,$instcode,$instseclist) = @_;	my ($dom,$owner,$crstype,$inststatuslist,$instcode,$instseclist,$custominfo) = @_;
my ($homeserver,$response);	my ($homeserver,$response);
if ($dom =~ /^$match_domain$/) {	if ($dom =~ /^$match_domain$/) {
$homeserver = &domain($dom,'primary');	$homeserver = &domain($dom,'primary');
}	}
unless ($homeserver eq 'no_host') {	unless ($homeserver eq 'no_host') {
	my $customdata;
	if (ref($custominfo) eq 'HASH') {
	$customdata = &freeze_escape($custominfo);
	}
$response=&unescape(&reply('autocrsreqvalidation:'.$dom.':'.&escape($owner).	$response=&unescape(&reply('autocrsreqvalidation:'.$dom.':'.&escape($owner).
':'.&escape($crstype).':'.&escape($inststatuslist).	':'.&escape($crstype).':'.&escape($inststatuslist).
':'.&escape($instcode).':'.&escape($instseclist),	':'.&escape($instcode).':'.&escape($instseclist).':'.
$homeserver));	$customdata,$homeserver));
}	}
return $response;	return $response;
}	}
Line 7711 sub auto_validate_class_sec {	Line 8901 sub auto_validate_class_sec {
return $response;	return $response;
}	}

	sub auto_validate_instclasses {
	my ($cdom,$cnum,$owners,$classesref) = @_;
	my ($homeserver,%validations);
	$homeserver = &homeserver($cnum,$cdom);
	unless ($homeserver eq 'no_host') {
	my $ownerlist;
	if (ref($owners) eq 'ARRAY') {
	$ownerlist = join(',',@{$owners});
	} else {
	$ownerlist = $owners;
	}
	if (ref($classesref) eq 'HASH') {
	my $classes = &freeze_escape($classesref);
	my $response=&reply('autovalidateinstclasses:'.&escape($ownerlist).
	':'.$cdom.':'.$classes,$homeserver);
	unless ($response =~ /(con_lost\|error\|no_such_host\|refused)/) {
	my @items = split(/&/,$response);
	foreach my $item (@items) {
	my ($key,$value) = split('=',$item);
	$validations{&unescape($key)} = &thaw_unescape($value);
	}
	}
	}
	}
	return %validations;
	}

	sub auto_crsreq_update {
	my ($cdom,$cnum,$crstype,$action,$ownername,$ownerdomain,$fullname,$title,
	$code,$accessstart,$accessend,$inbound) = @_;
	my ($homeserver,%crsreqresponse);
	if ($cdom =~ /^$match_domain$/) {
	$homeserver = &domain($cdom,'primary');
	}
	unless (($homeserver eq 'no_host') \|\| ($homeserver eq '')) {
	my $info;
	if (ref($inbound) eq 'HASH') {
	$info = &freeze_escape($inbound);
	}
	my $response=&reply('autocrsrequpdate:'.$cdom.':'.$cnum.':'.&escape($crstype).
	':'.&escape($action).':'.&escape($ownername).':'.
	&escape($ownerdomain).':'.&escape($fullname).':'.
	&escape($title).':'.&escape($code).':'.
	&escape($accessstart).':'.&escape($accessend).':'.$info,
	$homeserver);
	unless ($response =~ /(con_lost\|error\|no_such_host\|refused)/) {
	my @items = split(/&/,$response);
	foreach my $item (@items) {
	my ($key,$value) = split('=',$item);
	$crsreqresponse{&unescape($key)} = &thaw_unescape($value);
	}
	}
	}
	return \%crsreqresponse;
	}

	sub auto_export_grades {
	my ($cdom,$cnum,$inforef,$gradesref) = @_;
	my ($homeserver,%exportresponse);
	if ($cdom =~ /^$match_domain$/) {
	$homeserver = &domain($cdom,'primary');
	}
	unless (($homeserver eq 'no_host') \|\| ($homeserver eq '')) {
	my $info;
	if (ref($inforef) eq 'HASH') {
	$info = &freeze_escape($inforef);
	}
	if (ref($gradesref) eq 'HASH') {
	my $grades = &freeze_escape($gradesref);
	my $response=&reply('encrypt:autoexportgrades:'.$cdom.':'.$cnum.':'.
	$info.':'.$grades,$homeserver);
	unless ($response =~ /(con_lost\|error\|no_such_host\|refused\|unknown_command)/) {
	my @items = split(/&/,$response);
	foreach my $item (@items) {
	my ($key,$value) = split('=',$item);
	$exportresponse{&unescape($key)} = &thaw_unescape($value);
	}
	}
	}
	}
	return \%exportresponse;
	}

	sub check_instcode_cloning {
	my ($codedefaults,$code_order,$cloner,$clonefromcode,$clonetocode) = @_;
	unless ((ref($codedefaults) eq 'HASH') && (ref($code_order) eq 'ARRAY')) {
	return;
	}
	my $canclone;
	if (@{$code_order} > 0) {
	my $instcoderegexp ='^';
	my @clonecodes = split(/\&/,$cloner);
	foreach my $item (@{$code_order}) {
	if (grep(/^\Q$item\E=/,@clonecodes)) {
	foreach my $pair (@clonecodes) {
	my ($key,$val) = split(/\=/,$pair,2);
	$val = &unescape($val);
	if ($key eq $item) {
	$instcoderegexp .= '('.$val.')';
	last;
	}
	}
	} else {
	$instcoderegexp .= $codedefaults->{$item};
	}
	}
	$instcoderegexp .= '$';
	my (@from,@to);
	eval {
	(@from) = ($clonefromcode =~ /$instcoderegexp/);
	(@to) = ($clonetocode =~ /$instcoderegexp/);
	};
	if ((@from > 0) && (@to > 0)) {
	my @diffs = &Apache::loncommon::compare_arrays(\@from,\@to);
	if (!@diffs) {
	$canclone = 1;
	}
	}
	}
	return $canclone;
	}

	sub default_instcode_cloning {
	my ($clonedom,$domdefclone,$clonefromcode,$clonetocode,$codedefaultsref,$codeorderref) = @_;
	my (%codedefaults,@code_order,$canclone);
	if ((ref($codedefaultsref) eq 'HASH') && (ref($codeorderref) eq 'ARRAY')) {
	%codedefaults = %{$codedefaultsref};
	@code_order = @{$codeorderref};
	} elsif ($clonedom) {
	&auto_instcode_defaults($clonedom,\%codedefaults,\@code_order);
	}
	if (($domdefclone) && (@code_order)) {
	my @clonecodes = split(/\+/,$domdefclone);
	my $instcoderegexp ='^';
	foreach my $item (@code_order) {
	if (grep(/^\Q$item\E$/,@clonecodes)) {
	$instcoderegexp .= '('.$codedefaults{$item}.')';
	} else {
	$instcoderegexp .= $codedefaults{$item};
	}
	}
	$instcoderegexp .= '$';
	my (@from,@to);
	eval {
	(@from) = ($clonefromcode =~ /$instcoderegexp/);
	(@to) = ($clonetocode =~ /$instcoderegexp/);
	};
	if ((@from > 0) && (@to > 0)) {
	my @diffs = &Apache::loncommon::compare_arrays(\@from,\@to);
	if (!@diffs) {
	$canclone = 1;
	}
	}
	}
	return $canclone;
	}

# ------------------------------------------------------- Course Group routines	# ------------------------------------------------------- Course Group routines

sub get_coursegroups {	sub get_coursegroups {
Line 7858 sub plaintext {	Line 9205 sub plaintext {
my %rolenames = (	my %rolenames = (
Course => 'std',	Course => 'std',
Community => 'alt1',	Community => 'alt1',
	Placement => 'std',
);	);
if ($cid ne '') {	if ($cid ne '') {
if ($env{'course.'.$cid.'.'.$short.'.plaintext'} ne '') {	if ($env{'course.'.$cid.'.'.$short.'.plaintext'} ne '') {
Line 7959 sub assignrole {	Line 9307 sub assignrole {
}	}
}	}
}	}
} elsif (($selfenroll == 1) && ($role eq 'st') && ($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {	} elsif (($selfenroll == 1) && ($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
$refused = '';	if ($role eq 'st') {
	$refused = '';
	} elsif (($context eq 'ltienroll') && ($env{'request.lti'})) {
	$refused = '';
	}
} elsif ($context eq 'requestcourses') {	} elsif ($context eq 'requestcourses') {
my @possroles = ('st','ta','ep','in','cc','co');	my @possroles = ('st','ta','ep','in','cc','co');
if ((grep(/^\Q$role\E$/,@possroles)) && ($env{'user.name'} ne '' && $env{'user.domain'} ne '')) {	if ((grep(/^\Q$role\E$/,@possroles)) && ($env{'user.name'} ne '' && $env{'user.domain'} ne '')) {
Line 8075 sub assignrole {	Line 9427 sub assignrole {
&courserolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,	&courserolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,
$selfenroll,$context);	$selfenroll,$context);
} elsif (($role eq 'li') \|\| ($role eq 'dg') \|\| ($role eq 'sc') \|\|	} elsif (($role eq 'li') \|\| ($role eq 'dg') \|\| ($role eq 'sc') \|\|
($role eq 'au') \|\| ($role eq 'dc')) {	($role eq 'au') \|\| ($role eq 'dc') \|\| ($role eq 'dh') \|\|
	($role eq 'da')) {
&domainrolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,	&domainrolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,
$context);	$context);
} elsif (($role eq 'ca') \|\| ($role eq 'aa')) {	} elsif (($role eq 'ca') \|\| ($role eq 'aa')) {
Line 8225 sub modifyuser {	Line 9578 sub modifyuser {
my $newuser;	my $newuser;
if ($uhome eq 'no_host') {	if ($uhome eq 'no_host') {
$newuser = 1;	$newuser = 1;
	unless (($umode && ($upass ne '')) \|\| ($umode eq 'localauth') \|\|
	($umode eq 'lti')) {
	return 'error: more information needed to create new user';
	}
}	}
# ----------------------------------------------------------------- Create User	# ----------------------------------------------------------------- Create User
if (($uhome eq 'no_host') &&	if (($uhome eq 'no_host') &&
(($umode && $upass) \|\| ($umode eq 'localauth'))) {	(($umode && $upass) \|\| ($umode eq 'localauth') \|\| ($umode eq 'lti'))) {
my $unhome='';	my $unhome='';
if (defined($desiredhome) && &host_domain($desiredhome) eq $udom) {	if (defined($desiredhome) && &host_domain($desiredhome) eq $udom) {
$unhome = $desiredhome;	$unhome = $desiredhome;
Line 8270 sub modifyuser {	Line 9627 sub modifyuser {
'current user id "'.$uidhash{$uname}.'".';	'current user id "'.$uidhash{$uname}.'".';
}	}
} else {	} else {
&idput($udom,($uname => $uid));	&idput($udom,{$uname => $uid},$uhome,'ids');
}	}
}	}
# -------------------------------------------------------------- Add names, etc	# -------------------------------------------------------------- Add names, etc
Line 8380 sub modifyuser {	Line 9737 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)=@_;	$selfenroll,$context,$inststatus,$credits,$instsec)=@_;
if (!$cid) {	if (!$cid) {
unless ($cid=$env{'request.course.id'}) {	unless ($cid=$env{'request.course.id'}) {
return 'not_in_class';	return 'not_in_class';
Line 8392 sub modifystudent {	Line 9749 sub modifystudent {
$desiredhome,$email,$inststatus);	$desiredhome,$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	# student's 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,$cid,$selfenroll,$context);	$gene,$usec,$end,$start,$type,$locktype,
	$cid,$selfenroll,$context,$credits,$instsec);
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,$cid,$selfenroll,$context) = @_;	my ($udom,$uname,$uid,$first,$middle,$last,$gene,$usec,$end,$start,$type,
	$locktype,$cid,$selfenroll,$context,$credits,$instsec) = @_;
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 8447 sub modify_student_enrollment {	Line 9806 sub modify_student_enrollment {
my %old_entry = &Apache::lonnet::get('classlist',[$user],$cdom,$cnum);	my %old_entry = &Apache::lonnet::get('classlist',[$user],$cdom,$cnum);
my $reply=cput('classlist',	my $reply=cput('classlist',
{$user =>	{$user =>
join(':',$end,$start,$uid,$usec,$fullname,$type,$locktype) },	join(':',$end,$start,$uid,$usec,$fullname,$type,$locktype,$credits,$instsec) },
$cdom,$cnum);	$cdom,$cnum);
if (($reply eq 'ok') \|\| ($reply eq 'delayed')) {	if (($reply eq 'ok') \|\| ($reply eq 'delayed')) {
&devalidate_getsection_cache($udom,$uname,$cid);	&devalidate_getsection_cache($udom,$uname,$cid);
Line 8676 sub is_course {	Line 10035 sub is_course {
my %courses = &courseiddump($cdom, '.', 1, '.', '.', $cnum, undef, undef,	my %courses = &courseiddump($cdom, '.', 1, '.', '.', $cnum, undef, undef,
'.');	'.');

return unless exists($courses{$cdom.'_'.$cnum});	return unless(exists($courses{$cdom.'_'.$cnum}));
return wantarray ? ($cdom, $cnum) : $cdom.'_'.$cnum;	return wantarray ? ($cdom, $cnum) : $cdom.'_'.$cnum;
}	}

Line 8701 sub store_userdata {	Line 10060 sub store_userdata {
$namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';	$namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
}	}
$namevalue=~s/\&$//;	$namevalue=~s/\&$//;
	unless ($namespace eq 'courserequests') {
	$datakey = &escape($datakey);
	}
$result = &reply("store:$udom:$uname:$namespace:$datakey:".	$result = &reply("store:$udom:$uname:$namespace:$datakey:".
$namevalue,$uhome);	$namevalue,$uhome);
}	}
Line 8809 sub save_selected_files {	Line 10171 sub save_selected_files {
my ($user, $path, @files) = @_;	my ($user, $path, @files) = @_;
my $filename = $user."savedfiles";	my $filename = $user."savedfiles";
my @other_files = &files_not_in_path($user, $path);	my @other_files = &files_not_in_path($user, $path);
open (OUT, '>'.$tmpdir.$filename);	open (OUT,'>',LONCAPA::tempdir().$filename);
foreach my $file (@files) {	foreach my $file (@files) {
print (OUT $env{'form.currentpath'}.$file."\n");	print (OUT $env{'form.currentpath'}.$file."\n");
}	}
Line 8823 sub save_selected_files {	Line 10185 sub save_selected_files {
sub clear_selected_files {	sub clear_selected_files {
my ($user) = @_;	my ($user) = @_;
my $filename = $user."savedfiles";	my $filename = $user."savedfiles";
open (OUT, '>'.LONCAPA::tempdir().$filename);	open (OUT,'>',LONCAPA::tempdir().$filename);
print (OUT undef);	print (OUT undef);
close (OUT);	close (OUT);
return ("ok");	return ("ok");
Line 8833 sub files_in_path {	Line 10195 sub files_in_path {
my ($user, $path) = @_;	my ($user, $path) = @_;
my $filename = $user."savedfiles";	my $filename = $user."savedfiles";
my %return_files;	my %return_files;
open (IN, '<'.LONCAPA::tempdir().$filename);	open (IN,'<',LONCAPA::tempdir().$filename);
while (my $line_in = <IN>) {	while (my $line_in = <IN>) {
chomp ($line_in);	chomp ($line_in);
my @paths_and_file = split (m!/!, $line_in);	my @paths_and_file = split (m!/!, $line_in);
Line 8855 sub files_not_in_path {	Line 10217 sub files_not_in_path {
my $filename = $user."savedfiles";	my $filename = $user."savedfiles";
my @return_files;	my @return_files;
my $path_part;	my $path_part;
open(IN, '<'.LONCAPA::.$filename);	open(IN, '<',LONCAPA::tempdir().$filename);
while (my $line = <IN>) {	while (my $line = <IN>) {
#ok, I know it's clunky, but I want it to work	#ok, I know it's clunky, but I want it to work
my @paths_and_file = split(m\|/\|, $line);	my @paths_and_file = split(m\|/\|, $line);
Line 8872 sub files_not_in_path {	Line 10234 sub files_not_in_path {
return (@return_files);	return (@return_files);
}	}

	#------------------------------Submitted/Handedback Portfolio Files Versioning

	sub portfiles_versioning {
	my ($symb,$domain,$stu_name,$portfiles,$versioned_portfiles) = @_;
	my $portfolio_root = '/userfiles/portfolio';
	return unless ((ref($portfiles) eq 'ARRAY') && (ref($versioned_portfiles) eq 'ARRAY'));
	foreach my $file (@{$portfiles}) {
	&unmark_as_readonly($domain,$stu_name,[$symb,$env{'request.course.id'}],$file);
	my ($directory,$answer_file) =($file =~ /^(.?)([^\/])$/);
	my ($answer_name,$answer_ver,$answer_ext) = &file_name_version_ext($answer_file);
	my $getpropath = 1;
	my ($dir_list,$listerror) = &dirlist($portfolio_root.$directory,$domain,
	$stu_name,$getpropath);
	my $version = &get_next_version($answer_name,$answer_ext,$dir_list);
	my $new_answer =
	&version_selected_portfile($domain,$stu_name,$directory,$answer_file,$version);
	if ($new_answer ne 'problem getting file') {
	push(@{$versioned_portfiles}, $directory.$new_answer);
	&mark_as_readonly($domain,$stu_name,[$directory.$new_answer],
	[$symb,$env{'request.course.id'},'graded']);
	}
	}
	}

	sub get_next_version {
	my ($answer_name, $answer_ext, $dir_list) = @_;
	my $version;
	if (ref($dir_list) eq 'ARRAY') {
	foreach my $row (@{$dir_list}) {
	my ($file) = split(/\&/,$row,2);
	my ($file_name,$file_version,$file_ext) =
	&file_name_version_ext($file);
	if (($file_name eq $answer_name) &&
	($file_ext eq $answer_ext)) {
	# gets here if filename and extension match,
	# regardless of version
	if ($file_version ne '') {
	# a versioned file is found so save it for later
	if ($file_version > $version) {
	$version = $file_version;
	}
	}
	}
	}
	}
	$version ++;
	return($version);
	}

	sub version_selected_portfile {
	my ($domain,$stu_name,$directory,$file_name,$version) = @_;
	my ($answer_name,$answer_ver,$answer_ext) =
	&file_name_version_ext($file_name);
	my $new_answer;
	$env{'form.copy'} =
	&getfile("/uploaded/$domain/$stu_name/portfolio$directory$file_name");
	if($env{'form.copy'} eq '-1') {
	$new_answer = 'problem getting file';
	} else {
	$new_answer = $answer_name.'.'.$version.'.'.$answer_ext;
	my $copy_result =
	&finishuserfileupload($stu_name,$domain,'copy',
	'/portfolio'.$directory.$new_answer);
	}
	undef($env{'form.copy'});
	return ($new_answer);
	}

	sub file_name_version_ext {
	my ($file)=@_;
	my @file_parts = split(/\./, $file);
	my ($name,$version,$ext);
	if (@file_parts > 1) {
	$ext=pop(@file_parts);
	if (@file_parts > 1 && $file_parts[-1] =~ /^\d+$/) {
	$version=pop(@file_parts);
	}
	$name=join('.',@file_parts);
	} else {
	$name=join('.',@file_parts);
	}
	return($name,$version,$ext);
	}

#----------------------------------------------Get portfolio file permissions	#----------------------------------------------Get portfolio file permissions

sub get_portfile_permissions {	sub get_portfile_permissions {
Line 8968 sub modify_access_controls {	Line 10414 sub modify_access_controls {
my $tries = 0;	my $tries = 0;
my $gotlock = &newput('file_permissions',$lockhash,$domain,$user);	my $gotlock = &newput('file_permissions',$lockhash,$domain,$user);

while (($gotlock ne 'ok') && $tries <3) {	while (($gotlock ne 'ok') && $tries < 10) {
$tries ++;	$tries ++;
sleep 1;	sleep(0.1);
$gotlock = &newput('file_permissions',$lockhash,$domain,$user);	$gotlock = &newput('file_permissions',$lockhash,$domain,$user);
}	}
if ($gotlock eq 'ok') {	if ($gotlock eq 'ok') {
Line 9016 sub modify_access_controls {	Line 10462 sub modify_access_controls {
}	}

sub make_public_indefinitely {	sub make_public_indefinitely {
my ($requrl) = @_;	my (@requrl) = @_;
	return &automated_portfile_access('public',\@requrl);
	}

	sub automated_portfile_access {
	my ($accesstype,$addsref,$delsref,$info) = @_;
	unless (($accesstype eq 'public') \|\| ($accesstype eq 'ip')) {
	return 'invalid';
	}
	my %urls;
	if (ref($addsref) eq 'ARRAY') {
	foreach my $requrl (@{$addsref}) {
	if (&is_portfolio_url($requrl)) {
	unless (exists($urls{$requrl})) {
	$urls{$requrl} = 'add';
	}
	}
	}
	}
	if (ref($delsref) eq 'ARRAY') {
	foreach my $requrl (@{$delsref}) {
	if (&is_portfolio_url($requrl)) {
	unless (exists($urls{$requrl})) {
	$urls{$requrl} = 'delete';
	}
	}
	}
	}
	unless (keys(%urls)) {
	return 'invalid';
	}
	my $ip;
	if ($accesstype eq 'ip') {
	if (ref($info) eq 'HASH') {
	if ($info->{'ip'} ne '') {
	$ip = $info->{'ip'};
	}
	}
	if ($ip eq '') {
	return 'invalid';
	}
	}
	my $errors;
my $now = time;	my $now = time;
my $action = 'activate';	my %current_perms;
my $aclnum = 0;	foreach my $requrl (sort(keys(%urls))) {
if (&is_portfolio_url($requrl)) {	my $action;
	if ($urls{$requrl} eq 'add') {
	$action = 'activate';
	} else {
	$action = 'none';
	}
	my $aclnum = 0;
my (undef,$udom,$unum,$file_name,$group) =	my (undef,$udom,$unum,$file_name,$group) =
&parse_portfolio_url($requrl);	&parse_portfolio_url($requrl);
my $current_perms = &get_portfile_permissions($udom,$unum);	unless (exists($current_perms{$unum.':'.$udom})) {
my %access_controls = &get_access_controls($current_perms,	$current_perms{$unum.':'.$udom} = &get_portfile_permissions($udom,$unum);
	}
	my %access_controls = &get_access_controls($current_perms{$unum.':'.$udom},
$group,$file_name);	$group,$file_name);
foreach my $key (keys(%{$access_controls{$file_name}})) {	foreach my $key (keys(%{$access_controls{$file_name}})) {
my ($num,$scope,$end,$start) =	my ($num,$scope,$end,$start) =
($key =~ /^([^:]+):([a-z]+)_(\d)_?(\d)$/);	($key =~ /^([^:]+):([a-z]+)_(\d)_?(\d)$/);
if ($scope eq 'public') {	if ($scope eq $accesstype) {
if ($start <= $now && $end == 0) {	if (($start <= $now) && ($end == 0)) {
$action = 'none';	if ($accesstype eq 'ip') {
} else {	if (ref($access_controls{$file_name}{$key}) eq 'HASH') {
	if (ref($access_controls{$file_name}{$key}{'ip'}) eq 'ARRAY') {
	if (grep(/^\Q$ip\E$/,@{$access_controls{$file_name}{$key}{'ip'}})) {
	if ($urls{$requrl} eq 'add') {
	$action = 'none';
	last;
	} else {
	$action = 'delete';
	$aclnum = $num;
	last;
	}
	}
	}
	}
	} elsif ($accesstype eq 'public') {
	if ($urls{$requrl} eq 'add') {
	$action = 'none';
	last;
	} else {
	$action = 'delete';
	$aclnum = $num;
	last;
	}
	}
	} elsif ($accesstype eq 'public') {
$action = 'update';	$action = 'update';
$aclnum = $num;	$aclnum = $num;
	last;
}	}
last;
}	}
}	}
if ($action eq 'none') {	if ($action eq 'none') {
return 'ok';	next;
} else {	} else {
my %changes;	my %changes;
my $newend = 0;	my $newend = 0;
my $newstart = $now;	my $newstart = $now;
my $newkey = $aclnum.':public_'.$newend.'_'.$newstart;	my $newkey = $aclnum.':'.$accesstype.'_'.$newend.'_'.$newstart;
$changes{$action}{$newkey} = {	$changes{$action}{$newkey} = {
type => 'public',	type => $accesstype,
time => {	time => {
start => $newstart,	start => $newstart,
end => $newend,	end => $newend,
},	},
};	};
	if ($accesstype eq 'ip') {
	$changes{$action}{$newkey}{'ip'} = [$ip];
	}
my ($outcome,$deloutcome,$new_values,$translation) =	my ($outcome,$deloutcome,$new_values,$translation) =
&modify_access_controls($file_name,\%changes,$udom,$unum);	&modify_access_controls($file_name,\%changes,$udom,$unum);
return $outcome;	unless ($outcome eq 'ok') {
	$errors .= $outcome.' ';
	}
}	}
	}
	if ($errors) {
	$errors =~ s/\s$//;
	return $errors;
} else {	} else {
return 'invalid';	return 'ok';
}	}
}	}

Line 9263 sub dirlist {	Line 10792 sub dirlist {
foreach my $user (sort(keys(%allusers))) {	foreach my $user (sort(keys(%allusers))) {
push(@alluserslist,$user.'&user');	push(@alluserslist,$user.'&user');
}	}
return (\@alluserslist);
	if (!%listerror) {
	# no errors
	return (\@alluserslist);
	} elsif (scalar(keys(%servers)) == 1) {
	# one library server, one error
	my ($key) = keys(%listerror);
	return (\@alluserslist, $listerror{$key});
	} elsif ( grep { $_ eq 'con_lost' } values(%listerror) ) {
	# con_lost indicates that we might miss data from at least one
	# library server
	return (\@alluserslist, 'con_lost');
	} else {
	# multiple library servers and no con_lost -> data should be
	# complete.
	return (\@alluserslist);
	}

} else {	} else {
return ([],'missing username');	return ([],'missing username');
}	}
Line 9336 sub stat_file {	Line 10882 sub stat_file {
return ();	return ();
}	}

	# --------------------------------------------------------- recursedirs
	# Recursive function to traverse either a specific user's Authoring Space
	# or corresponding Published Resource Space, and populate the hash ref:
	# $dirhashref with URLs of all directories, and if $filehashref hash
	# ref arg is provided, the URLs of any files, excluding versioned, .meta,
	# or .rights files in resource space, and .meta, .save, .log, and .bak
	# files in Authoring Space.
	#
	# Inputs:
	#
	# $is_home - true if current server is home server for user's space
	# $context - either: priv, or res respectively for Authoring or Resource Space.
	# $docroot - Document root (i.e., /home/httpd/html
	# $toppath - Top level directory (i.e., /res/$dom/$uname or /priv/$dom/$uname
	# $relpath - Current path (relative to top level).
	# $dirhashref - reference to hash to populate with URLs of directories (Required)
	# $filehashref - reference to hash to populate with URLs of files (Optional)
	#
	# Returns: nothing
	#
	# Side Effects: populates $dirhashref, and $filehashref (if provided).
	#
	# Currently used by interface/londocs.pm to create linked select boxes for
	# directory and filename to import a Course "Author" resource into a course, and
	# also to create linked select boxes for Authoring Space and Directory to choose
	# save location for creation of a new "standard" problem from the Course Editor.
	#

	sub recursedirs {
	my ($is_home,$context,$docroot,$toppath,$relpath,$dirhashref,$filehashref) = @_;
	return unless (ref($dirhashref) eq 'HASH');
	my $currpath = $docroot.$toppath;
	if ($relpath) {
	$currpath .= "/$relpath";
	}
	my $savefile;
	if (ref($filehashref)) {
	$savefile = 1;
	}
	if ($is_home) {
	if (opendir(my $dirh,$currpath)) {
	foreach my $item (sort { lc($a) cmp lc($b) } grep(!/^\.+$/,readdir($dirh))) {
	next if ($item eq '');
	if (-d "$currpath/$item") {
	my $newpath;
	if ($relpath) {
	$newpath = "$relpath/$item";
	} else {
	$newpath = $item;
	}
	$dirhashref->{&Apache::lonlocal::js_escape($newpath)} = 1;
	&recursedirs($is_home,$context,$docroot,$toppath,$newpath,$dirhashref,$filehashref);
	} elsif ($savefile) {
	if ($context eq 'priv') {
	unless ($item =~ /\.(meta\|save\|log\|bak\|DS_Store)$/) {
	$filehashref->{&Apache::lonlocal::js_escape($relpath)}{$item} = 1;
	}
	} else {
	unless (($item =~ /\.meta$/) \|\| ($item =~ /\.\d+\.\w+$/) \|\| ($item =~ /\.rights$/)) {
	$filehashref->{&Apache::lonlocal::js_escape($relpath)}{$item} = 1;
	}
	}
	}
	}
	closedir($dirh);
	}
	} else {
	my ($dirlistref,$listerror) =
	&dirlist($toppath.$relpath);
	my @dir_lines;
	my $dirptr=16384;
	if (ref($dirlistref) eq 'ARRAY') {
	foreach my $dir_line (sort
	{
	my ($afile)=split('&',$a,2);
	my ($bfile)=split('&',$b,2);
	return (lc($afile) cmp lc($bfile));
	} (@{$dirlistref})) {
	my ($item,$dom,undef,$testdir,undef,undef,undef,undef,$size,undef,$mtime,undef,undef,undef,$obs,undef) =
	split(/\&/,$dir_line,16);
	$item =~ s/\s+$//;
	next if (($item =~ /^\.\.?$/) \|\| ($obs));
	if ($dirptr&$testdir) {
	my $newpath;
	if ($relpath) {
	$newpath = "$relpath/$item";
	} else {
	$relpath = '/';
	$newpath = $item;
	}
	$dirhashref->{&Apache::lonlocal::js_escape($newpath)} = 1;
	&recursedirs($is_home,$context,$docroot,$toppath,$newpath,$dirhashref,$filehashref);
	} elsif ($savefile) {
	if ($context eq 'priv') {
	unless ($item =~ /\.(meta\|save\|log\|bak\|DS_Store)$/) {
	$filehashref->{$relpath}{$item} = 1;
	}
	} else {
	unless (($item =~ /\.meta$/) \|\| ($item =~ /\.\d+\.\w+$/)) {
	$filehashref->{$relpath}{$item} = 1;
	}
	}
	}
	}
	}
	}
	return;
	}

# -------------------------------------------------------- Value of a Condition	# -------------------------------------------------------- Value of a Condition

# gets the value of a specific preevaluated condition	# gets the value of a specific preevaluated condition
Line 9480 sub get_userresdata {	Line 11135 sub get_userresdata {
}	}
#error 2 occurs when the .db doesn't exist	#error 2 occurs when the .db doesn't exist
if ($tmp!~/error: 2 /) {	if ($tmp!~/error: 2 /) {
&logthis("<font color=\"blue\">WARNING:".	if ((!defined($cached)) \|\| ($tmp ne 'con_lost')) {
" Trying to get resource data for ".	&logthis("<font color=\"blue\">WARNING:".
$uname." at ".$udom.": ".	" Trying to get resource data for ".
$tmp."</font>");	$uname." at ".$udom.": ".
	$tmp."</font>");
	}
} elsif ($tmp=~/error: 2 /) {	} elsif ($tmp=~/error: 2 /) {
#&EXT_cache_set($udom,$uname);	#&EXT_cache_set($udom,$uname);
&do_cache_new('userres',$hashid,undef,600);	&do_cache_new('userres',$hashid,undef,600);
Line 9497 sub get_userresdata {	Line 11154 sub get_userresdata {
# Parameters:	# Parameters:
# $name - Course/user name.	# $name - Course/user name.
# $domain - Name of the domain the user/course is registered on.	# $domain - Name of the domain the user/course is registered on.
# $type - Type of thing $name is (must be 'course' or 'user'	# $type - Type of thing $name is (must be 'course' or 'user')
	# $mapp - decluttered URL of enclosing map
	# $recursed - Ref to scalar -- set to 1, if nested maps have been recursed.
	# $recurseup - Ref to array of map URLs, starting with map containing
	# $mapp up through hierarchy of nested maps to top level map.
	# $courseid - CourseID (first part of param identifier).
	# $modifier - Middle part of param identifier.
	# $what - Last part of param identifier.
# @which - Array of names of resources desired.	# @which - Array of names of resources desired.
# Returns:	# Returns:
# The value of the first reasource in @which that is found in the	# The value of the first reasource in @which that is found in the
Line 9507 sub get_userresdata {	Line 11171 sub get_userresdata {
# 'user', an undefined reference is returned.	# 'user', an undefined reference is returned.
# If none of the resources are found, an undef is returned	# If none of the resources are found, an undef is returned
sub resdata {	sub resdata {
my ($name,$domain,$type,@which)=@_;	my ($name,$domain,$type,$mapp,$recursed,$recurseup,$courseid,
	$modifier,$what,@which)=@_;
my $result;	my $result;
if ($type eq 'course') {	if ($type eq 'course') {
$result=&get_courseresdata($name,$domain);	$result=&get_courseresdata($name,$domain);
Line 9516 sub resdata {	Line 11181 sub resdata {
}	}
if (!ref($result)) { return $result; }	if (!ref($result)) { return $result; }
foreach my $item (@which) {	foreach my $item (@which) {
if (defined($result->{$item->[0]})) {	if ($item->[1] eq 'course') {
	if ((ref($recurseup) eq 'ARRAY') && (ref($recursed) eq 'SCALAR')) {
	unless ($$recursed) {
	@{$recurseup} = &get_map_hierarchy($mapp,$courseid);
	$$recursed = 1;
	}
	foreach my $item (@${recurseup}) {
	my $norecursechk=$courseid.$modifier.$item.'___(all).'.$what;
	last if (defined($result->{$norecursechk}));
	my $recursechk=$courseid.$modifier.$item.'___(rec).'.$what;
	if (defined($result->{$recursechk})) { return [$result->{$recursechk},'map']; }
	}
	}
	}
	if (defined($result->{$item->[0]})) {
return [$result->{$item->[0]},$item->[1]];	return [$result->{$item->[0]},$item->[1]];
}	}
}	}
return undef;	return undef;
}	}

	sub get_domain_lti {
	my ($cdom,$context) = @_;
	my ($name,%lti);
	if ($context eq 'consumer') {
	$name = 'ltitools';
	} elsif ($context eq 'provider') {
	$name = 'lti';
	} else {
	return %lti;
	}
	my ($result,$cached)=&is_cached_new($name,$cdom);
	if (defined($cached)) {
	if (ref($result) eq 'HASH') {
	%lti = %{$result};
	}
	} else {
	my %domconfig = &get_dom('configuration',[$name],$cdom);
	if (ref($domconfig{$name}) eq 'HASH') {
	%lti = %{$domconfig{$name}};
	my %encdomconfig = &get_dom('encconfig',[$name],$cdom);
	if (ref($encdomconfig{$name}) eq 'HASH') {
	foreach my $id (keys(%lti)) {
	if (ref($encdomconfig{$name}{$id}) eq 'HASH') {
	foreach my $item ('key','secret') {
	$lti{$id}{$item} = $encdomconfig{$name}{$id}{$item};
	}
	}
	}
	}
	}
	my $cachetime = 246060;
	&do_cache_new($name,$cdom,\%lti,$cachetime);
	}
	return %lti;
	}

	sub get_numsuppfiles {
	my ($cnum,$cdom,$ignorecache)=@_;
	my $hashid=$cnum.':'.$cdom;
	my ($suppcount,$cached);
	unless ($ignorecache) {
	($suppcount,$cached) = &is_cached_new('suppcount',$hashid);
	}
	unless (defined($cached)) {
	my $chome=&homeserver($cnum,$cdom);
	unless ($chome eq 'no_host') {
	($suppcount,my $supptools,my $errors) = (0,0,0);
	my $suppmap = 'supplemental.sequence';
	($suppcount,$supptools,$errors) =
	&Apache::loncommon::recurse_supplemental($cnum,$cdom,$suppmap,$suppcount,
	$supptools,$errors);
	}
	&do_cache_new('suppcount',$hashid,$suppcount,600);
	}
	return $suppcount;
	}

#	#
# EXT resource caching routines	# EXT resource caching routines
#	#

	{
	# Cache (5 seconds) of map hierarchy for speedup of navmaps display
	#
	# The course for which we cache
	my $cachedmapkey='';
	# The cached recursive maps for this course
	my %cachedmaps=();
	# When this was last done
	my $cachedmaptime='';

sub clear_EXT_cache_status {	sub clear_EXT_cache_status {
&delenv('cache.EXT.');	&delenv('cache.EXT.');
}	}
Line 9551 sub EXT_cache_set {	Line 11297 sub EXT_cache_set {
# --------------------------------------------------------- Value of a Variable	# --------------------------------------------------------- Value of a Variable
sub EXT {	sub EXT {

my ($varname,$symbparm,$udom,$uname,$usection,$recurse)=@_;	my ($varname,$symbparm,$udom,$uname,$usection,$recurse,$cid)=@_;
unless ($varname) { return ''; }	unless ($varname) { return ''; }
#get real user name/domain, courseid and symb	#get real user name/domain, courseid and symb
my $courseid;	my $courseid;
Line 9666 sub EXT {	Line 11412 sub EXT {
if (!$symbparm) { $symbparm=&symbread(); }	if (!$symbparm) { $symbparm=&symbread(); }
}	}

if ($space eq 'title') {	if ($qualifier eq '') {
if (!$symbparm) { $symbparm = $env{'request.filename'}; }	if ($space eq 'title') {
return &gettitle($symbparm);	if (!$symbparm) { $symbparm = $env{'request.filename'}; }
}	return &gettitle($symbparm);
	}

if ($space eq 'map') {	if ($space eq 'map') {
my ($map) = &decode_symb($symbparm);	my ($map) = &decode_symb($symbparm);
return &symbread($map);	return &symbread($map);
}	}
if ($space eq 'filename') {	if ($space eq 'maptitle') {
if ($symbparm) {	my ($map) = &decode_symb($symbparm);
return &clutter((&decode_symb($symbparm))[2]);	return &gettitle($map);
	}
	if ($space eq 'filename') {
	if ($symbparm) {
	return &clutter((&decode_symb($symbparm))[2]);
	}
	return &hreflocation('',$env{'request.filename'});
}	}
return &hreflocation('',$env{'request.filename'});
}

my ($section, $group, @groups);	if ((defined($courseid)) && ($courseid eq $env{'request.course.id'}) && $symbparm) {
my ($courselevelm,$courselevel);	if ($space eq 'visibleparts') {
if ($symbparm && defined($courseid) &&	my $navmap = Apache::lonnavmaps::navmap->new();
$courseid eq $env{'request.course.id'}) {	my $item;
	if (ref($navmap)) {
	my $res = $navmap->getBySymb($symbparm);
	my $parts = $res->parts();
	if (ref($parts) eq 'ARRAY') {
	$item = join(',',@{$parts});
	}
	undef($navmap);
	}
	return $item;
	}
	}
	}

	my ($section, $group, @groups, @recurseup, $recursed);
	my ($courselevelm,$courseleveli,$courselevel,$mapp);
	if (($courseid eq '') && ($cid)) {
	$courseid = $cid;
	}
	if (($symbparm && $courseid) &&
	(($courseid eq $env{'request.course.id'}) \|\| ($courseid eq $cid))) {

#print '<br>'.$space.' - '.$qualifier.' - '.$spacequalifierrest;	#print '<br>'.$space.' - '.$qualifier.' - '.$spacequalifierrest;

# ----------------------------------------------------- Cascading lookup scheme	# ----------------------------------------------------- Cascading lookup scheme
my $symbp=$symbparm;	my $symbp=$symbparm;
my $mapp=&deversion((&decode_symb($symbp))[0]);	$mapp=&deversion((&decode_symb($symbp))[0]);

my $symbparm=$symbp.'.'.$spacequalifierrest;	my $symbparm=$symbp.'.'.$spacequalifierrest;
	my $recurseparm=$mapp.'___(rec).'.$spacequalifierrest;
my $mapparm=$mapp.'___(all).'.$spacequalifierrest;	my $mapparm=$mapp.'___(all).'.$spacequalifierrest;

if (($env{'user.name'} eq $uname) &&	if (($env{'user.name'} eq $uname) &&
($env{'user.domain'} eq $udom)) {	($env{'user.domain'} eq $udom)) {
$section=$env{'request.course.sec'};	$section=$env{'request.course.sec'};
Line 9712 sub EXT {	Line 11482 sub EXT {

my $seclevel=$courseid.'.['.$section.'].'.$spacequalifierrest;	my $seclevel=$courseid.'.['.$section.'].'.$spacequalifierrest;
my $seclevelr=$courseid.'.['.$section.'].'.$symbparm;	my $seclevelr=$courseid.'.['.$section.'].'.$symbparm;
	my $secleveli=$courseid.'.['.$section.'].'.$recurseparm;
my $seclevelm=$courseid.'.['.$section.'].'.$mapparm;	my $seclevelm=$courseid.'.['.$section.'].'.$mapparm;

$courselevel=$courseid.'.'.$spacequalifierrest;	$courselevel=$courseid.'.'.$spacequalifierrest;
my $courselevelr=$courseid.'.'.$symbparm;	my $courselevelr=$courseid.'.'.$symbparm;
	$courseleveli=$courseid.'.'.$recurseparm;
$courselevelm=$courseid.'.'.$mapparm;	$courselevelm=$courseid.'.'.$mapparm;

# ----------------------------------------------------------- first, check user	# ----------------------------------------------------------- first, check user

my $userreply=&resdata($uname,$udom,'user',	my $userreply=&resdata($uname,$udom,'user',$mapp,\$recursed,
	\@recurseup,$courseid,'.',$spacequalifierrest,
([$courselevelr,'resource'],	([$courselevelr,'resource'],
[$courselevelm,'map' ],	[$courselevelm,'map' ],
	[$courseleveli,'map' ],
[$courselevel, 'course' ]));	[$courselevel, 'course' ]));
if (defined($userreply)) { return &get_reply($userreply); }	if (defined($userreply)) { return &get_reply($userreply); }

Line 9730 sub EXT {	Line 11504 sub EXT {
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);	$recurseparm,$mapparm,$spacequalifierrest,
if (defined($coursereply)) { return &get_reply($coursereply); }	$mapp,\$recursed,\@recurseup);
	if (defined($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',$mapp,\$recursed,\@recurseup,
	$courseid,'.['.$section.'].',$spacequalifierrest,
([$seclevelr, 'resource'],	([$seclevelr, 'resource'],
[$seclevelm, 'map' ],	[$seclevelm, 'map' ],
	[$secleveli, 'map' ],
[$seclevel, 'course' ],	[$seclevel, 'course' ],
[$courselevelr,'resource']));	[$courselevelr,'resource']));
if (defined($coursereply)) { return &get_reply($coursereply); }	if (defined($coursereply)) { return &get_reply($coursereply); }
Line 9755 sub EXT {	Line 11532 sub EXT {
if ($thisparm) { return &get_reply([$thisparm,'resource']); }	if ($thisparm) { return &get_reply([$thisparm,'resource']); }
}	}
# ------------------------------------------ fourth, look in resource metadata	# ------------------------------------------ fourth, look in resource metadata

$spacequalifierrest=~s/\./\_/;	my $what = $spacequalifierrest;
	$what=~s/\./\_/;
my $filename;	my $filename;
if (!$symbparm) { $symbparm=&symbread(); }	if (!$symbparm) { $symbparm=&symbread(); }
if ($symbparm) {	if ($symbparm) {
Line 9764 sub EXT {	Line 11542 sub EXT {
} else {	} else {
$filename=$env{'request.filename'};	$filename=$env{'request.filename'};
}	}
my $metadata=&metadata($filename,$spacequalifierrest);	my $toolsymb;
	if (($filename =~ /ext\.tool$/) && ($what ne '0_gradable')) {
	$toolsymb = $symbparm;
	}
	my $metadata=&metadata($filename,$what,$toolsymb);
if (defined($metadata)) { return &get_reply([$metadata,'resource']); }	if (defined($metadata)) { return &get_reply([$metadata,'resource']); }
$metadata=&metadata($filename,'parameter_'.$spacequalifierrest);	$metadata=&metadata($filename,'parameter_'.$what,$toolsymb);
if (defined($metadata)) { return &get_reply([$metadata,'resource']); }	if (defined($metadata)) { return &get_reply([$metadata,'resource']); }

# ---------------------------------------------- fourth, look in rest of course	# ----------------------------------------------- fifth, 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',$mapp,\$recursed,\@recurseup,
	$courseid,'.',$spacequalifierrest,
([$courselevelm,'map' ],	([$courselevelm,'map' ],
	[$courseleveli,'map' ],
[$courselevel, 'course']));	[$courselevel, 'course']));
if (defined($coursereply)) { return &get_reply($coursereply); }	if (defined($coursereply)) { return &get_reply($coursereply); }
}	}
Line 9790 sub EXT {	Line 11574 sub EXT {
if (defined($partgeneral[0])) { return &get_reply(\@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,$varname,$toolsymb);
if (defined($pack_def)) { return &get_reply([$pack_def,'resource']); }	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') {
Line 9832 sub get_reply {	Line 11616 sub get_reply {
}	}

sub check_group_parms {	sub check_group_parms {
my ($courseid,$groups,$symbparm,$mapparm,$what) = @_;	my ($courseid,$groups,$symbparm,$recurseparm,$mapparm,$what,$mapp,
my @groupitems = ();	$recursed,$recurseupref) = @_;
my $resultitem;	my @levels = ([$symbparm,'resource'],[$mapparm,'map'],[$recurseparm,'map'],
my @levels = ([$symbparm,'resource'],[$mapparm,'map'],[$what,'course']);	[$what,'course']);
	my $coursereply;
foreach my $group (@{$groups}) {	foreach my $group (@{$groups}) {
	my @groupitems = ();
foreach my $level (@levels) {	foreach my $level (@levels) {
my $item = $courseid.'.['.$group.'].'.$level->[0];	my $item = $courseid.'.['.$group.'].'.$level->[0];
push(@groupitems,[$item,$level->[1]]);	push(@groupitems,[$item,$level->[1]]);
}	}
	my $coursereply = &resdata($env{'course.'.$courseid.'.num'},
	$env{'course.'.$courseid.'.domain'},
	'course',$mapp,$recursed,$recurseupref,
	$courseid,'.['.$group.'].',$what,
	@groupitems);
	last if (defined($coursereply));
}	}
my $coursereply = &resdata($env{'course.'.$courseid.'.num'},
$env{'course.'.$courseid.'.domain'},
'course',@groupitems);
return $coursereply;	return $coursereply;
}	}

	sub get_map_hierarchy {
	my ($mapname,$courseid) = @_;
	my @recurseup = ();
	if ($mapname) {
	if (($cachedmapkey eq $courseid) &&
	(abs($cachedmaptime-time)<5)) {
	if (ref($cachedmaps{$mapname}) eq 'ARRAY') {
	return @{$cachedmaps{$mapname}};
	}
	}
	my $navmap = Apache::lonnavmaps::navmap->new();
	if (ref($navmap)) {
	@recurseup = $navmap->recurseup_maps($mapname);
	undef($navmap);
	$cachedmaps{$mapname} = \@recurseup;
	$cachedmaptime=time;
	$cachedmapkey=$courseid;
	}
	}
	return @recurseup;
	}

	}

sub sort_course_groups { # Sort groups based on defined rankings. Default is sort().	sub sort_course_groups { # Sort groups based on defined rankings. Default is sort().
my ($courseid,@groups) = @_;	my ($courseid,@groups) = @_;
@groups = sort(@groups);	@groups = sort(@groups);
Line 9855 sub sort_course_groups { # Sort groups b	Line 11668 sub sort_course_groups { # Sort groups b
}	}

sub packages_tab_default {	sub packages_tab_default {
my ($uri,$varname)=@_;	my ($uri,$varname,$toolsymb)=@_;
my (undef,$part,$name)=split(/\./,$varname);	my (undef,$part,$name)=split(/\./,$varname);

my (@extension,@specifics,$do_default);	my (@extension,@specifics,$do_default);
foreach my $package (split(/,/,&metadata($uri,'packages'))) {	foreach my $package (split(/,/,&metadata($uri,'packages',$toolsymb))) {
my ($pack_type,$pack_part)=split(/_/,$package,2);	my ($pack_type,$pack_part)=split(/_/,$package,2);
if ($pack_type eq 'default') {	if ($pack_type eq 'default') {
$do_default=1;	$do_default=1;
Line 9926 sub add_prefix_and_part {	Line 11739 sub add_prefix_and_part {

my %metaentry;	my %metaentry;
my %importedpartids;	my %importedpartids;
	my %importedrespids;
sub metadata {	sub metadata {
my ($uri,$what,$liburi,$prefix,$depthcount)=@_;	my ($uri,$what,$toolsymb,$liburi,$prefix,$depthcount)=@_;
$uri=&declutter($uri);	$uri=&declutter($uri);
# if it is a non metadata possible uri return quickly	# if it is a non metadata possible uri return quickly
if (($uri eq '') \|\|	if (($uri eq '') \|\|
(($uri =~ m\|^/*adm/\|) &&	(($uri =~ m\|^/*adm/\|) &&
($uri !~ m\|^adm/includes\|) && ($uri !~ m\|/bulletinboard$\|)) \|\|	($uri !~ m\|^adm/includes\|) && ($uri !~ m{/(smppg\|bulletinboard\|ext\.tool)$})) \|\|
($uri =~ m\|/$\|) \|\| ($uri =~ m\|/.meta$\|) \|\| ($uri =~ m{^/*uploaded/.+\.sequence$})) {	($uri =~ m\|/$\|) \|\| ($uri =~ m\|/.meta$\|) \|\| ($uri =~ m{^/*uploaded/.+\.sequence$})) {
return undef;	return undef;
}	}
if (($uri =~ /^priv/ \|\| $uri=~/home\/httpd\/html\/priv/)	if (($uri =~ /^priv/ \|\| $uri=~m{^home/httpd/html/priv})
&& &Apache::lonxml::get_state('target') =~ /^(\|meta)$/) {	&& &Apache::lonxml::get_state('target') =~ /^(\|meta)$/) {
return undef;	return undef;
}	}
Line 9951 sub metadata {	Line 11765 sub metadata {
my ($result,$cached)=&is_cached_new('meta',$uri);	my ($result,$cached)=&is_cached_new('meta',$uri);
if (defined($cached)) { return $result->{':'.$what}; }	if (defined($cached)) { return $result->{':'.$what}; }
}	}

	#
	# If the uri is for an external tool the file from
	# which metadata should be retrieved depends on whether
	# the tool had been configured to be gradable (set in the Course
	# Editor or Resource Editor).
	#
	# If a valid symb has been included as the third arg in the call
	# to &metadata() that can be used to retrieve the value of
	# parameter_0_gradable set for the resource, and included in the
	# uploaded map containing the tool. The value is retrieved via
	# &EXT(), if a valid symb is available. Otherwise the value of
	# gradable in the exttool_$marker.db file for the tool instance
	# is retrieved via &get().
	#
	# When lonuserstate::traceroute() calls lonnet::EXT() for
	# hiddenresource and encrypturl (during course initialization)
	# the map-level parameter for resource.0.gradable included in the
	# uploaded map containing the tool will not yet have been stored
	# in the user_course_parms.db file for the user's session, so in
	# this case fall back to retrieving gradable status from the
	# exttool_$marker.db file.
	#
	# In order to avoid an infinite loop, &metadata() will return
	# before a call to &EXT(), if the uri is for an external tool
	# and the $what for which metadata is being requested is
	# parameter_0_gradable or 0_gradable.
	#

	if ($uri =~ /ext\.tool$/) {
	if (($what eq 'parameter_0_gradable') \|\| ($what eq '0_gradable')) {
	return;
	} else {
	my ($checked,$use_passback);
	if ($toolsymb ne '') {
	(undef,undef,my $tooluri) = &decode_symb($toolsymb);
	if (($tooluri eq $uri) && (&EXT('resource.0.gradable',$toolsymb))) {
	$checked = 1;
	if (&EXT('resource.0.gradable',$toolsymb) =~ /^yes$/i) {
	$use_passback = 1;
	}
	}
	}
	unless ($checked) {
	my ($ignore,$cdom,$cnum,$marker) = split(m{/},$uri);
	$marker=~s/\D//g;
	if ($marker) {
	my %toolsettings=&get('exttool_'.$marker,['gradable'],$cdom,$cnum);
	$use_passback = $toolsettings{'gradable'};
	}
	}
	if ($use_passback) {
	$filename = '/home/httpd/html/res/lib/templates/LTIpassback.tool';
	} else {
	$filename = '/home/httpd/html/res/lib/templates/LTIstandard.tool';
	}
	}
	}

{	{
# Imported parts would go here	# Imported parts would go here
my %importedids=();	my @origfiletagids=();
my @origfileimportpartids=();
my $importedparts=0;	my $importedparts=0;

	# Imported responseids would go here
	my $importedresponses=0;
#	#
# Is this a recursive call for a library?	# Is this a recursive call for a library?
#	#
Line 10050 sub metadata {	Line 11925 sub metadata {
my $dir=$filename;	my $dir=$filename;
$dir=~s\|[^/]*$\|\|;	$dir=~s\|[^/]*$\|\|;
$location=&filelocation($dir,$location);	$location=&filelocation($dir,$location);

	my $importid=$token->[2]->{'id'};
my $importmode=$token->[2]->{'importmode'};	my $importmode=$token->[2]->{'importmode'};
if ($importmode eq 'problem') {	#
# Import as problem/response	# Check metadata for imported file to
$unikey=&add_prefix_and_part($prefix,$token->[2]->{'part'});	# see if it contained response items
} elsif ($importmode eq 'part') {	#
	my ($origfile,@libfilekeys);
	my %currmetaentry = %metaentry;
	@libfilekeys = split(/,/,&metadata($location,'keys',undef,undef,undef,
	$depthcount+1));
	if (grep(/^responseorder$/,@libfilekeys)) {
	my $libresponseorder = &metadata($location,'responseorder',undef,undef,
	undef,$depthcount+1);
	if ($libresponseorder ne '') {
	if ($#origfiletagids<0) {
	undef(%importedrespids);
	undef(%importedpartids);
	}
	my @respids = split(/\s,\s/,$libresponseorder);
	if (@respids) {
	$importedrespids{$importid} = join(',',map { $importid.'_'.$_ } @respids);
	}
	if ($importedrespids{$importid} ne '') {
	$importedresponses = 1;
	# We need to get the original file and the imported file to get the response order correct
	# Load and inspect original file
	if ($#origfiletagids<0) {
	my $origfilelocation=$perlvar{'lonDocRoot'}.&clutter($uri);
	$origfile=&getfile($origfilelocation);
	@origfiletagids=($origfile=~/<((?:\w+)response\|import\|part)[^>]id\s=\s[\"\']([^\"\']+)[\"\'][^>]>/gs);
	}
	}
	}
	}
	# Do not overwrite contents of %metaentry hash for resource itself with
	# hash populated for imported library file
	%metaentry = %currmetaentry;
	undef(%currmetaentry);
	if ($importmode eq 'part') {
# Import as part(s)	# Import as part(s)
$importedparts=1;	$importedparts=1;
# We need to get the original file and the imported file to get the part order correct	# We need to get the original file and the imported file to get the part order correct
# Good news: we do not need to worry about nested libraries, since parts cannot be nested	# Good news: we do not need to worry about nested libraries, since parts cannot be nested
# Load and inspect original file	# Load and inspect original file if we didn't do that already
if ($#origfileimportpartids<0) {	if ($#origfiletagids<0) {
undef(%importedpartids);	undef(%importedrespids);
my $origfilelocation=$perlvar{'lonDocRoot'}.&clutter($uri);	undef(%importedpartids);
my $origfile=&getfile($origfilelocation);	if ($origfile eq '') {
@origfileimportpartids=($origfile=~/<(part\|import)[^>]id\s=\s[\"\']([^\"\']+)[\"\'][^>]>/gs);	my $origfilelocation=$perlvar{'lonDocRoot'}.&clutter($uri);
	$origfile=&getfile($origfilelocation);
	@origfiletagids=($origfile=~/<(part\|import)[^>]id\s=\s[\"\']([^\"\']+)[\"\'][^>]>/gs);
	}
	}
	my @impfilepartids;
	# If <partorder> tag is included in metadata for the imported file
	# get the parts in the imported file from that.
	if (grep(/^partorder$/,@libfilekeys)) {
	%currmetaentry = %metaentry;
	my $libpartorder = &metadata($location,'partorder',undef,undef,undef,
	$depthcount+1);
	%metaentry = %currmetaentry;
	undef(%currmetaentry);
	if ($libpartorder ne '') {
	@impfilepartids=split(/\s,\s/,$libpartorder);
	}
	} else {
	# If no <partorder> tag available, load and inspect imported file
	my $impfile=&getfile($location);
	@impfilepartids=($impfile=~/<part[^>]id\s=\s[\"\']([^\"\']+)[\"\'][^>]>/gs);
}	}

# Load and inspect imported file
my $impfile=&getfile($location);
my @impfilepartids=($impfile=~/<part[^>]id\s=\s[\"\']([^\"\']+)[\"\'][^>]>/gs);
if ($#impfilepartids>=0) {	if ($#impfilepartids>=0) {
# This problem had parts	# This problem had parts
$importedpartids{$token->[2]->{'id'}}=join(',',@impfilepartids);	$importedpartids{$token->[2]->{'id'}}=join(',',@impfilepartids);
Line 10081 sub metadata {	Line 12006 sub metadata {
$importedpartids{$token->[2]->{'id'}}=$token->[2]->{'id'};	$importedpartids{$token->[2]->{'id'}}=$token->[2]->{'id'};
}	}
} else {	} else {
	# Import as problem or as normal import
	$unikey=&add_prefix_and_part($prefix,$token->[2]->{'part'});
	unless ($importmode eq 'problem') {
# Normal import	# Normal import
$unikey=&add_prefix_and_part($prefix,$token->[2]->{'part'});	if (defined($token->[2]->{'id'})) {
if (defined($token->[2]->{'id'})) {	$unikey.='_'.$token->[2]->{'id'};
$unikey.='_'.$token->[2]->{'id'};	}
}	}
	# Check metadata for imported file to
	# see if it contained parts
	if (grep(/^partorder$/,@libfilekeys)) {
	%currmetaentry = %metaentry;
	my $libpartorder = &metadata($location,'partorder',undef,undef,undef,
	$depthcount+1);
	%metaentry = %currmetaentry;
	undef(%currmetaentry);
	if ($libpartorder ne '') {
	$importedparts = 1;
	$importedpartids{$token->[2]->{'id'}}=$libpartorder;
	}
	}
}	}

if ($depthcount<20) {	if ($depthcount<20) {
my $metadata =	my $metadata =
&metadata($uri,'keys', $location,$unikey,	&metadata($uri,'keys',$toolsymb,$location,$unikey,
$depthcount+1);	$depthcount+1);
foreach my $meta (split(',',$metadata)) {	foreach my $meta (split(',',$metadata)) {
$metaentry{':'.$meta}=$metaentry{':'.$meta};	$metaentry{':'.$meta}=$metaentry{':'.$meta};
$metathesekeys{$meta}=1;	$metathesekeys{$meta}=1;
}	}

}	}
} else {	} else {
#	#
Line 10165 sub metadata {	Line 12104 sub metadata {
$dir=~s\|[^/]*$\|\|;	$dir=~s\|[^/]*$\|\|;
$location=&filelocation($dir,$location);	$location=&filelocation($dir,$location);
my $rights_metadata =	my $rights_metadata =
&metadata($uri,'keys',$location,'_rights',	&metadata($uri,'keys',$toolsymb,$location,'_rights',
$depthcount+1);	$depthcount+1);
foreach my $rights (split(',',$rights_metadata)) {	foreach my $rights (split(',',$rights_metadata)) {
#$metaentry{':'.$rights}=$metacache{$uri}->{':'.$rights};	#$metaentry{':'.$rights}=$metacache{$uri}->{':'.$rights};
Line 10179 sub metadata {	Line 12118 sub metadata {
grep { ! $seen{$_} ++ } (split(',',$metaentry{':packages'}));	grep { ! $seen{$_} ++ } (split(',',$metaentry{':packages'}));
$metaentry{':packages'} = join(',',@uniq_packages);	$metaentry{':packages'} = join(',',@uniq_packages);

if ($importedparts) {	if (($importedresponses) \|\| ($importedparts)) {
	if ($importedparts) {
# We had imported parts and need to rebuild partorder	# We had imported parts and need to rebuild partorder
$metaentry{':partorder'}='';	$metaentry{':partorder'}='';
$metathesekeys{'partorder'}=1;	$metathesekeys{'partorder'}=1;
for (my $index=0;$index<$#origfileimportpartids;$index+=2) {	}
if ($origfileimportpartids[$index] eq 'part') {	if ($importedresponses) {
# original part, part of the problem	# We had imported responses and need to rebuil responseorder
$metaentry{':partorder'}.=','.$origfileimportpartids[$index+1];	$metaentry{':responseorder'}='';
} else {	$metathesekeys{'responseorder'}=1;
# we have imported parts at this position	}
$metaentry{':partorder'}.=','.$importedpartids{$origfileimportpartids[$index+1]};	for (my $index=0;$index<$#origfiletagids;$index+=2) {
}	my $origid = $origfiletagids[$index+1];
}	if ($origfiletagids[$index] eq 'part') {
$metaentry{':partorder'}=~s/^\,//;	# Original part, part of the problem
	if ($importedparts) {
	$metaentry{':partorder'}.=','.$origid;
	}
	} elsif ($origfiletagids[$index] eq 'import') {
	if ($importedparts) {
	# We have imported parts at this position
	if ($importedpartids{$origid} ne '') {
	$metaentry{':partorder'}.=','.$importedpartids{$origid};
	}
	}
	if ($importedresponses) {
	# We have imported responses at this position
	if ($importedrespids{$origid} ne '') {
	$metaentry{':responseorder'}.=','.$importedrespids{$origid};
	}
	}
	} else {
	# Original response item, part of the problem
	if ($importedresponses) {
	$metaentry{':responseorder'}.=','.$origid;
	}
	}
	}
	if ($importedparts) {
	$metaentry{':partorder'}=~s/^\,//;
	}
	if ($importedresponses) {
	$metaentry{':responseorder'}=~s/^\,//;
	}
}	}

$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,$cachetime);	unless ($liburi) {
	&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 10310 sub gettitle {	Line 12280 sub gettitle {
return $title;	return $title;
}	}

sub getdocspath {
my ($symb) = @_;
my $path;
if ($symb) {
my ($mapurl,$id,$resurl) = &decode_symb($symb);
if ($resurl=~/\.(sequence\|page)$/) {
$mapurl=$resurl;
} elsif ($resurl eq 'adm/navmaps') {
$mapurl=$env{'course.'.$env{'request.course.id'}.'.url'};
}
my $mapresobj;
my $navmap = Apache::lonnavmaps::navmap->new();
if (ref($navmap)) {
$mapresobj = $navmap->getResourceByUrl($mapurl);
}
$mapurl=~s{^.*/([^/]+)\.(\w+)$}{$1};
my $type=$2;
if (ref($mapresobj)) {
my $pcslist = $mapresobj->map_hierarchy();
if ($pcslist ne '') {
foreach my $pc (split(/,/,$pcslist)) {
next if ($pc <= 1);
my $res = $navmap->getByMapPc($pc);
if (ref($res)) {
my $thisurl = $res->src();
$thisurl=~s{^.*/([^/]+)\.\w+$}{$1};
my $thistitle = $res->title();
$path .= '&'.
&Apache::lonhtmlcommon::entity_encode($thisurl).'&'.
&Apache::lonhtmlcommon::entity_encode($thistitle).
':'.$res->randompick().
':'.$res->randomout().
':'.$res->encrypted().
':'.$res->randomorder().
':'.$res->is_page();
}
}
}
$path =~ s/^\&//;
my $maptitle = $mapresobj->title();
if ($mapurl eq 'default') {
$maptitle = 'Main Course Documents';
}
$path .= ($path ne '')? '&' : ''.
&Apache::lonhtmlcommon::entity_encode($mapurl).'&'.
&Apache::lonhtmlcommon::entity_encode($maptitle).
':'.$mapresobj->randompick().
':'.$mapresobj->randomout().
':'.$mapresobj->encrypted().
':'.$mapresobj->randomorder().
':'.$mapresobj->is_page();
} else {
my $maptitle = &gettitle($mapurl);
my $ispage;
if ($mapurl =~ /\.page$/) {
$ispage = 1;
}
if ($mapurl eq 'default') {
$maptitle = 'Main Course Documents';
}
$path = &Apache::lonhtmlcommon::entity_encode($mapurl).'&'.
&Apache::lonhtmlcommon::entity_encode($maptitle).':::::'.$ispage;
}
unless ($mapurl eq 'default') {
$path = 'default&'.
&Apache::lonhtmlcommon::entity_encode('Main Course Documents').
':::::&'.$path;
}
}
return $path;
}

sub get_slot {	sub get_slot {
my ($which,$cnum,$cdom)=@_;	my ($which,$cnum,$cdom)=@_;
if (!$cnum \|\| !$cdom) {	if (!$cnum \|\| !$cdom) {
Line 10435 sub get_course_slots {	Line 12333 sub get_course_slots {
my %slots=&Apache::lonnet::dump('slots',$cdom,$cnum);	my %slots=&Apache::lonnet::dump('slots',$cdom,$cnum);
my ($tmp) = keys(%slots);	my ($tmp) = keys(%slots);
if ($tmp !~ /^(con_lost\|error\|no_such_host)/i) {	if ($tmp !~ /^(con_lost\|error\|no_such_host)/i) {
&Apache::lonnet::do_cache_new('allslots',$hashid,\%slots,600);	&do_cache_new('allslots',$hashid,\%slots,600);
return %slots;	return %slots;
}	}
}	}
Line 10640 sub deversion {	Line 12538 sub deversion {
# ------------------------------------------------------ Return symb list entry	# ------------------------------------------------------ Return symb list entry

sub symbread {	sub symbread {
my ($thisfn,$donotrecurse)=@_;	my ($thisfn,$donotrecurse,$ignorecachednull,$checkforblock,$possibles)=@_;
my $cache_str;	my $cache_str='request.symbread.cached.'.$thisfn;
if ($thisfn ne '') {	if (defined($env{$cache_str})) {
$cache_str='request.symbread.cached.'.$thisfn;	if ($ignorecachednull) {
if ($env{$cache_str} ne '') {	return $env{$cache_str} unless ($env{$cache_str} eq '');
	} else {
return $env{$cache_str};	return $env{$cache_str};
}	}
} else {	}
# no filename provided? try from environment	# no filename provided? try from environment
	unless ($thisfn) {
if ($env{'request.symb'}) {	if ($env{'request.symb'}) {
return $env{$cache_str}=&symbclean($env{'request.symb'});	return $env{$cache_str}=&symbclean($env{'request.symb'});
}	}
Line 10708 sub symbread {	Line 12608 sub symbread {
my ($mapid,$resid)=split(/\./,$ids);	my ($mapid,$resid)=split(/\./,$ids);
$syval=&encode_symb($bighash{'map_id_'.$mapid},	$syval=&encode_symb($bighash{'map_id_'.$mapid},
$resid,$thisfn);	$resid,$thisfn);
} elsif (!$donotrecurse) {	if (ref($possibles) eq 'HASH') {
	$possibles->{$syval} = 1;
	}
	if ($checkforblock) {
	my @blockers = &has_comm_blocking('bre',$syval,$bighash{'src_'.$ids});
	if (@blockers) {
	$syval = '';
	return;
	}
	}
	} elsif ((!$donotrecurse) \|\| ($checkforblock) \|\| (ref($possibles) eq 'HASH')) {
# ------------------------------------------ There is more than one possibility	# ------------------------------------------ There is more than one possibility
my $realpossible=0;	my $realpossible=0;
foreach my $id (@possibilities) {	foreach my $id (@possibilities) {
my $file=$bighash{'src_'.$id};	my $file=$bighash{'src_'.$id};
if (&allowed('bre',$file)) {	my $canaccess;
my ($mapid,$resid)=split(/\./,$id);	if (($donotrecurse) \|\| ($checkforblock) \|\| (ref($possibles) eq 'HASH')) {
if ($bighash{'map_type_'.$mapid} ne 'page') {	$canaccess = 1;
$realpossible++;	} else {
$syval=&encode_symb($bighash{'map_id_'.$mapid},	$canaccess = &allowed('bre',$file);
$resid,$thisfn);	}
}	if ($canaccess) {
	my ($mapid,$resid)=split(/\./,$id);
	if ($bighash{'map_type_'.$mapid} ne 'page') {
	my $poss_syval=&encode_symb($bighash{'map_id_'.$mapid},
	$resid,$thisfn);
	if (ref($possibles) eq 'HASH') {
	$possibles->{$syval} = 1;
	}
	if ($checkforblock) {
	my @blockers = &has_comm_blocking('bre',$poss_syval,$file);
	unless (@blockers > 0) {
	$syval = $poss_syval;
	$realpossible++;
	}
	} else {
	$syval = $poss_syval;
	$realpossible++;
	}
	}
}	}
}	}
if ($realpossible!=1) { $syval=''; }	if ($realpossible!=1) { $syval=''; }
Line 10727 sub symbread {	Line 12655 sub symbread {
$syval='';	$syval='';
}	}
}	}
untie(%bighash)	untie(%bighash);
}	}
}	}
if ($syval) {	if ($syval) {
Line 11066 sub rndseed_CODE_64bit5 {	Line 12994 sub rndseed_CODE_64bit5 {
sub setup_random_from_rndseed {	sub setup_random_from_rndseed {
my ($rndseed)=@_;	my ($rndseed)=@_;
if ($rndseed =~/([,:])/) {	if ($rndseed =~/([,:])/) {
my ($num1,$num2)=split(/[,:]/,$rndseed);	my ($num1,$num2) = map { abs($_); } (split(/[,:]/,$rndseed));
&Math::Random::random_set_seed(abs($num1),abs($num2));	if ((!$num1) \|\| (!$num2) \|\| ($num1 > 2147483562) \|\| ($num2 > 2147483398)) {
	&Math::Random::random_set_seed_from_phrase($rndseed);
	} else {
	&Math::Random::random_set_seed($num1,$num2);
	}
} else {	} else {
&Math::Random::random_set_seed_from_phrase($rndseed);	&Math::Random::random_set_seed_from_phrase($rndseed);
}	}
Line 11246 sub repcopy_userfile {	Line 13178 sub repcopy_userfile {
}	}
# now the path exists for sure	# now the path exists for sure
# get a user agent	# get a user agent
my $ua=new LWP::UserAgent;
my $transferfile=$file.'.in.transfer';	my $transferfile=$file.'.in.transfer';
# FIXME: this should flock	# FIXME: this should flock
if (-e $transferfile) { return 'ok'; }	if (-e $transferfile) { return 'ok'; }
Line 11256 sub repcopy_userfile {	Line 13187 sub repcopy_userfile {
my $protocol = $protocol{$homeserver};	my $protocol = $protocol{$homeserver};
$protocol = 'http' if ($protocol ne 'https');	$protocol = 'http' if ($protocol ne 'https');
$request=new HTTP::Request('GET',$protocol.'://'.&hostname($homeserver).'/raw/'.$uri);	$request=new HTTP::Request('GET',$protocol.'://'.&hostname($homeserver).'/raw/'.$uri);
my $response=$ua->request($request,$transferfile);	my $response = &LONCAPA::LWPReq::makerequest($homeserver,$request,$transferfile,\%perlvar,'',0,1);
# did it work?	# did it work?
if ($response->is_error()) {	if ($response->is_error()) {
unlink($transferfile);	unlink($transferfile);
Line 11300 sub getuploaded {	Line 13231 sub getuploaded {
my $protocol = $protocol{$homeserver};	my $protocol = $protocol{$homeserver};
$protocol = 'http' if ($protocol ne 'https');	$protocol = 'http' if ($protocol ne 'https');
$uri = $protocol.'://'.&hostname($homeserver).'/raw/'.$uri;	$uri = $protocol.'://'.&hostname($homeserver).'/raw/'.$uri;
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 $response=&LONCAPA::LWPReq::makerequest($homeserver,$request,'',\%perlvar,'',0,1);
$$rtncode = $response->code;	$$rtncode = $response->code;
if (! $response->is_success()) {	if (! $response->is_success()) {
return 'failed';	return 'failed';
Line 11319 sub readfile {	Line 13249 sub readfile {
my $file = shift;	my $file = shift;
if ( (! -e $file ) \|\| ($file eq '') ) { return -1; };	if ( (! -e $file ) \|\| ($file eq '') ) { return -1; };
my $fh;	my $fh;
open($fh,"<$file");	open($fh,"<",$file);
my $a='';	my $a='';
while (my $line = <$fh>) { $a .= $line; }	while (my $line = <$fh>) { $a .= $line; }
return $a;	return $a;
Line 11432 sub machine_ids {	Line 13362 sub machine_ids {

sub additional_machine_domains {	sub additional_machine_domains {
my @domains;	my @domains;
open(my $fh,"<$perlvar{'lonTabDir'}/expected_domains.tab");	open(my $fh,"<","$perlvar{'lonTabDir'}/expected_domains.tab");
while( my $line = <$fh>) {	while( my $line = <$fh>) {
$line =~ s/\s//g;	$line =~ s/\s//g;
push(@domains,$line);	push(@domains,$line);
Line 11458 sub default_login_domain {	Line 13388 sub default_login_domain {
sub declutter {	sub declutter {
my $thisfn=shift;	my $thisfn=shift;
if ($thisfn=~m\|^/enc/\|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }	if ($thisfn=~m\|^/enc/\|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
$thisfn=~s/^\Q$perlvar{'lonDocRoot'}\E//;	unless ($thisfn=~m{^/home/httpd/html/priv/}) {
	$thisfn=~s{^/home/httpd/html}{};
	}
$thisfn=~s/^\///;	$thisfn=~s/^\///;
$thisfn=~s\|^adm/wrapper/\|\|;	$thisfn=~s\|^adm/wrapper/\|\|;
$thisfn=~s\|^adm/coursedocs/showdoc/\|\|;	$thisfn=~s\|^adm/coursedocs/showdoc/\|\|;
Line 11501 sub clutter {	Line 13433 sub clutter {
# &logthis("Got a blank emb style");	# &logthis("Got a blank emb style");
}	}
}	}
	} elsif ($thisfn =~ m{^/adm/$match_domain/$match_courseid/\d+/ext\.tool$}) {
	$thisfn='/adm/wrapper'.$thisfn;
}	}
return $thisfn;	return $thisfn;
}	}
Line 11574 sub get_dns {	Line 13508 sub get_dns {
}	}

my %alldns;	my %alldns;
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);
my $line = $1;	my $line = $1;
Line 11585 sub get_dns {	Line 13519 sub get_dns {
$alldns{$host} = $protocol;	$alldns{$host} = $protocol;
}	}
while (%alldns) {	while (%alldns) {
my ($dns) = keys(%alldns);	my ($dns) = sort { $b cmp $a } keys(%alldns);
my $ua=new LWP::UserAgent;
$ua->timeout(30);
my $request=new HTTP::Request('GET',"$alldns{$dns}://$dns$url");	my $request=new HTTP::Request('GET',"$alldns{$dns}://$dns$url");
my $response=$ua->request($request);	my $response = &LONCAPA::LWPReq::makerequest('',$request,'',\%perlvar,30,0);
delete($alldns{$dns});	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);
unless ($nocache) {	unless ($nocache) {
&Apache::lonnet::do_cache_new('dns',$url,\@content,302460*60);	&do_cache_new('dns',$url,\@content,302460*60);
}	}
&$func(\@content,$hashref);	&$func(\@content,$hashref);
return;	return;
Line 11602 sub get_dns {	Line 13534 sub get_dns {
close($config);	close($config);
my $which = (split('/',$url))[3];	my $which = (split('/',$url))[3];
&logthis("unable to contact DNS defaulting to on disk file dns_$which.tab\n");	&logthis("unable to contact DNS defaulting to on disk file dns_$which.tab\n");
open($config,"<$perlvar{'lonTabDir'}/dns_$which.tab");	open($config,"<","$perlvar{'lonTabDir'}/dns_$which.tab");
my @content = <$config>;	my @content = <$config>;
&$func(\@content,$hashref);	&$func(\@content,$hashref);
return;	return;
Line 11611 sub get_dns {	Line 13543 sub get_dns {
# ------------------------------------------------------Get DNS checksums file	# ------------------------------------------------------Get DNS checksums file
sub parse_dns_checksums_tab {	sub parse_dns_checksums_tab {
my ($lines,$hashref) = @_;	my ($lines,$hashref) = @_;
my $machine_dom = &Apache::lonnet::host_domain($perlvar{'lonHostID'});	my $lonhost = $perlvar{'lonHostID'};
	my $machine_dom = &Apache::lonnet::host_domain($lonhost);
my $loncaparev = &get_server_loncaparev($machine_dom);	my $loncaparev = &get_server_loncaparev($machine_dom);
	my $distro = (split(/\:/,&get_server_distarch($lonhost)))[0];
	my $webconfdir = '/etc/httpd/conf';
	if ($distro =~ /^(ubuntu\|debian)(\d+)$/) {
	$webconfdir = '/etc/apache2';
	} elsif ($distro =~ /^sles(\d+)$/) {
	if ($1 >= 10) {
	$webconfdir = '/etc/apache2';
	}
	} elsif ($distro =~ /^suse(\d+\.\d+)$/) {
	if ($1 >= 10.0) {
	$webconfdir = '/etc/apache2';
	}
	}
my ($release,$timestamp) = split(/\-/,$loncaparev);	my ($release,$timestamp) = split(/\-/,$loncaparev);
my (%chksum,%revnum);	my (%chksum,%revnum);
if (ref($lines) eq 'ARRAY') {	if (ref($lines) eq 'ARRAY') {
chomp(@{$lines});	chomp(@{$lines});
my $versions = shift(@{$lines});	my $version = shift(@{$lines});
my %supported;	if ($version eq $release) {
if ($versions =~ /^VERSIONS\:([\w\.\,]+)$/) {
my $releaseslist = $1;
if ($releaseslist =~ /,/) {
map { $supported{$_} = 1; } split(/,/,$releaseslist);
} elsif ($releaseslist) {
$supported{$releaseslist} = 1;
}
}
if ($supported{$release}) {
my $matchthis = 0;
foreach my $line (@{$lines}) {	foreach my $line (@{$lines}) {
if ($line =~ /^(\d[\w\.]+)$/) {	my ($file,$version,$shasum) = split(/,/,$line);
if ($matchthis) {	if ($file =~ m{^/etc/httpd/conf}) {
last;	if ($webconfdir eq '/etc/apache2') {
} elsif ($1 eq $release) {	$file =~ s{^\Q/etc/httpd/conf/\E}{$webconfdir/};
$matchthis = 1;
}	}
} elsif ($matchthis) {
my ($file,$version,$shasum) = split(/,/,$line);
$chksum{$file} = $shasum;
$revnum{$file} = $version;
}	}
	$chksum{$file} = $shasum;
	$revnum{$file} = $version;
}	}
if (ref($hashref) eq 'HASH') {	if (ref($hashref) eq 'HASH') {
%{$hashref} = (	%{$hashref} = (
Line 11654 sub parse_dns_checksums_tab {	Line 13587 sub parse_dns_checksums_tab {
}	}

sub fetch_dns_checksums {	sub fetch_dns_checksums {
my %checksums;	my %checksums;
&get_dns('/adm/dns/checksums',\&parse_dns_checksums_tab,1,1,	my $machine_dom = &Apache::lonnet::host_domain($perlvar{'lonHostID'});
	my $loncaparev = &get_server_loncaparev($machine_dom,$perlvar{'lonHostID'});
	my ($release,$timestamp) = split(/\-/,$loncaparev);
	&get_dns("/adm/dns/checksums/$release",\&parse_dns_checksums_tab,1,1,
\%checksums);	\%checksums);
return \%checksums;	return \%checksums;
}	}
Line 11688 sub fetch_dns_checksums {	Line 13624 sub fetch_dns_checksums {
}	}

sub load_domain_tab {	sub load_domain_tab {
my ($ignore_cache) = @_;	my ($ignore_cache,$nocache) = @_;
&get_dns('/adm/dns/domain',\&parse_domain_tab,$ignore_cache);	&get_dns('/adm/dns/domain',\&parse_domain_tab,$ignore_cache,$nocache);
my $fh;	my $fh;
if (open($fh,"<".$perlvar{'lonTabDir'}.'/domain.tab')) {	if (open($fh,"<",$perlvar{'lonTabDir'}.'/domain.tab')) {
my @lines = <$fh>;	my @lines = <$fh>;
&parse_domain_tab(\@lines);	&parse_domain_tab(\@lines);
}	}
Line 11743 sub fetch_dns_checksums {	Line 13679 sub fetch_dns_checksums {
my ($id,$domain,$role,$name,$protocol,$intdom)=split(/:/,$configline);	my ($id,$domain,$role,$name,$protocol,$intdom)=split(/:/,$configline);
$name=~s/\s//g;	$name=~s/\s//g;
if ($id && $domain && $role && $name) {	if ($id && $domain && $role && $name) {
	if ((exists($hostname{$id})) && ($hostname{$id} ne '')) {
	my $curr = $hostname{$id};
	my $skip;
	if (ref($name_to_host{$curr}) eq 'ARRAY') {
	if (($curr eq $name) && (@{$name_to_host{$curr}} == 1)) {
	$skip = 1;
	} else {
	@{$name_to_host{$curr}} = grep { $_ ne $id } @{$name_to_host{$curr}};
	}
	}
	unless ($skip) {
	push(@{$name_to_host{$name}},$id);
	}
	} else {
	push(@{$name_to_host{$name}},$id);
	}
$hostname{$id}=$name;	$hostname{$id}=$name;
push(@{$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 (defined($protocol)) {
Line 11767 sub fetch_dns_checksums {	Line 13718 sub fetch_dns_checksums {
&purge_remembered();	&purge_remembered();
&reset_domain_info();	&reset_domain_info();
&reset_hosts_ip_info();	&reset_hosts_ip_info();
	undef(%internetdom);
undef(%name_to_host);	undef(%name_to_host);
undef(%hostname);	undef(%hostname);
undef(%hostdom);	undef(%hostdom);
Line 11775 sub fetch_dns_checksums {	Line 13727 sub fetch_dns_checksums {
}	}

sub load_hosts_tab {	sub load_hosts_tab {
my ($ignore_cache) = @_;	my ($ignore_cache,$nocache) = @_;
&get_dns('/adm/dns/hosts',\&parse_hosts_tab,$ignore_cache);	&get_dns('/adm/dns/hosts',\&parse_hosts_tab,$ignore_cache,$nocache);
open(my $config,"<$perlvar{'lonTabDir'}/hosts.tab");	open(my $config,"<","$perlvar{'lonTabDir'}/hosts.tab");
my @config = <$config>;	my @config = <$config>;
&parse_hosts_tab(\@config);	&parse_hosts_tab(\@config);
close($config);	close($config);
Line 11798 sub fetch_dns_checksums {	Line 13750 sub fetch_dns_checksums {
}	}

sub all_names {	sub all_names {
&load_hosts_tab() if (!$loaded);	my ($ignore_cache,$nocache) = @_;
	&load_hosts_tab($ignore_cache,$nocache) if (!$loaded);

return %name_to_host;	return %name_to_host;
}	}
Line 11808 sub fetch_dns_checksums {	Line 13761 sub fetch_dns_checksums {
return %hostdom;	return %hostdom;
}	}

	sub all_host_intdom {
	&load_hosts_tab() if (!$loaded);
	return %internetdom;
	}

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

Line 11920 sub fetch_dns_checksums {	Line 13878 sub fetch_dns_checksums {
}	}

sub get_iphost {	sub get_iphost {
my ($ignore_cache) = @_;	my ($ignore_cache,$nocache) = @_;

if (!$ignore_cache) {	if (!$ignore_cache) {
if (%iphost) {	if (%iphost) {
Line 11944 sub fetch_dns_checksums {	Line 13902 sub fetch_dns_checksums {
%old_name_to_ip = %{$ip_info->[1]};	%old_name_to_ip = %{$ip_info->[1]};
}	}

my %name_to_host = &all_names();	my %name_to_host = &all_names($ignore_cache,$nocache);
foreach my $name (keys(%name_to_host)) {	foreach my $name (keys(%name_to_host)) {
my $ip;	my $ip;
if (!exists($name_to_ip{$name})) {	if (!exists($name_to_ip{$name})) {
Line 11969 sub fetch_dns_checksums {	Line 13927 sub fetch_dns_checksums {
}	}
push(@{$iphost{$ip}},@{$name_to_host{$name}});	push(@{$iphost{$ip}},@{$name_to_host{$name}});
}	}
&Apache::lonnet::do_cache_new('iphost','iphost',	unless ($nocache) {
[\%iphost,\%name_to_ip,\%lonid_to_ip],	&do_cache_new('iphost','iphost',
486060);	[\%iphost,\%name_to_ip,\%lonid_to_ip],
	486060);
	}

return %iphost;	return %iphost;
}	}
Line 12027 sub fetch_dns_checksums {	Line 13987 sub fetch_dns_checksums {
}	}
$seen{$prim_ip} = 1;	$seen{$prim_ip} = 1;
}	}
return &Apache::lonnet::do_cache_new('internetnames',$lonid,\@idns,126060);	return &do_cache_new('internetnames',$lonid,\@idns,126060);
}	}

}	}

sub all_loncaparevs {	sub all_loncaparevs {
return qw(1.1 1.2 1.3 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 2.10);	return qw(1.1 1.2 1.3 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 2.10 2.11);
}	}

	# ---------------------------------------------------------- Read loncaparev table
	{
	sub load_loncaparevs {
	if (-e "$perlvar{'lonTabDir'}/loncaparevs.tab") {
	if (open(my $config,"<","$perlvar{'lonTabDir'}/loncaparevs.tab")) {
	while (my $configline=<$config>) {
	chomp($configline);
	my ($hostid,$loncaparev)=split(/:/,$configline);
	$loncaparevs{$hostid}=$loncaparev;
	}
	close($config);
	}
	}
	}
	}

	# ---------------------------------------------------------- Read serverhostID table
	{
	sub load_serverhomeIDs {
	if (-e "$perlvar{'lonTabDir'}/serverhomeIDs.tab") {
	if (open(my $config,"<","$perlvar{'lonTabDir'}/serverhomeIDs.tab")) {
	while (my $configline=<$config>) {
	chomp($configline);
	my ($name,$id)=split(/:/,$configline);
	$serverhomeIDs{$name}=$id;
	}
	close($config);
	}
	}
	}
	}


BEGIN {	BEGIN {

# ----------------------------------- Read loncapa.conf and loncapa_apache.conf	# ----------------------------------- Read loncapa.conf and loncapa_apache.conf
Line 12048 BEGIN {	Line 14041 BEGIN {

# ------------------------------------------------------ Read spare server file	# ------------------------------------------------------ Read spare server file
{	{
open(my $config,"<$perlvar{'lonTabDir'}/spare.tab");	open(my $config,"<","$perlvar{'lonTabDir'}/spare.tab");

while (my $configline=<$config>) {	while (my $configline=<$config>) {
chomp($configline);	chomp($configline);
Line 12062 BEGIN {	Line 14055 BEGIN {
}	}
# ------------------------------------------------------------ Read permissions	# ------------------------------------------------------------ Read permissions
{	{
open(my $config,"<$perlvar{'lonTabDir'}/roles.tab");	open(my $config,"<","$perlvar{'lonTabDir'}/roles.tab");

while (my $configline=<$config>) {	while (my $configline=<$config>) {
chomp($configline);	chomp($configline);
Line 12076 BEGIN {	Line 14069 BEGIN {

# -------------------------------------------- Read plain texts for permissions	# -------------------------------------------- Read plain texts for permissions
{	{
open(my $config,"<$perlvar{'lonTabDir'}/rolesplain.tab");	open(my $config,"<","$perlvar{'lonTabDir'}/rolesplain.tab");

while (my $configline=<$config>) {	while (my $configline=<$config>) {
chomp($configline);	chomp($configline);
Line 12096 BEGIN {	Line 14089 BEGIN {

# ---------------------------------------------------------- Read package table	# ---------------------------------------------------------- Read package table
{	{
open(my $config,"<$perlvar{'lonTabDir'}/packages.tab");	open(my $config,"<","$perlvar{'lonTabDir'}/packages.tab");

while (my $configline=<$config>) {	while (my $configline=<$config>) {
if ($configline !~ /\S/ \|\| $configline=~/^#/) { next; }	if ($configline !~ /\S/ \|\| $configline=~/^#/) { next; }
Line 12112 BEGIN {	Line 14105 BEGIN {
}	}

# ---------------------------------------------------------- Read loncaparev table	# ---------------------------------------------------------- Read loncaparev table
{
if (-e "$perlvar{'lonTabDir'}/loncaparevs.tab") {	&load_loncaparevs();
if (open(my $config,"<$perlvar{'lonTabDir'}/loncaparevs.tab")) {
while (my $configline=<$config>) {
chomp($configline);
my ($hostid,$loncaparev)=split(/:/,$configline);
$loncaparevs{$hostid}=$loncaparev;
}
close($config);
}
}
}

# ---------------------------------------------------------- Read serverhostID table	# ---------------------------------------------------------- Read serverhostID table
{
if (-e "$perlvar{'lonTabDir'}/serverhomeIDs.tab") {
if (open(my $config,"<$perlvar{'lonTabDir'}/serverhomeIDs.tab")) {
while (my $configline=<$config>) {
chomp($configline);
my ($name,$id)=split(/:/,$configline);
$serverhomeIDs{$name}=$id;
}
close($config);
}
}
}

	&load_serverhomeIDs();

	# ---------------------------------------------------------- Read releaseslist XML
{	{
my $file = $Apache::lonnet::perlvar{'lonTabDir'}.'/releaseslist.xml';	my $file = $Apache::lonnet::perlvar{'lonTabDir'}.'/releaseslist.xml';
if (-e $file) {	if (-e $file) {
Line 12148 BEGIN {	Line 14122 BEGIN {
my $item = $token->[1];	my $item = $token->[1];
my $name = $token->[2]{'name'};	my $name = $token->[2]{'name'};
my $value = $token->[2]{'value'};	my $value = $token->[2]{'value'};
if ($item ne '' && $name ne '' && $value ne '') {	my $valuematch = $token->[2]{'valuematch'};
	my $namematch = $token->[2]{'namematch'};
	if ($item eq 'parameter') {
	if (($namematch ne '') \|\| (($name ne '') && ($value ne '' \|\| $valuematch ne ''))) {
	my $release = $parser->get_text();
	$release =~ s/(^\s\|\s$ )//gx;
	$needsrelease{$item.':'.$name.':'.$value.':'.$valuematch.':'.$namematch} = $release;
	}
	} elsif ($item ne '' && $name ne '') {
my $release = $parser->get_text();	my $release = $parser->get_text();
$release =~ s/(^\s\|\s$ )//gx;	$release =~ s/(^\s\|\s$ )//gx;
$needsrelease{$item.':'.$name.':'.$value} = $release;	$needsrelease{$item.':'.$name.':'.$value} = $release;
Line 12161 BEGIN {	Line 14143 BEGIN {
# ---------------------------------------------------------- Read managers table	# ---------------------------------------------------------- Read managers table
{	{
if (-e "$perlvar{'lonTabDir'}/managers.tab") {	if (-e "$perlvar{'lonTabDir'}/managers.tab") {
if (open(my $config,"<$perlvar{'lonTabDir'}/managers.tab")) {	if (open(my $config,"<","$perlvar{'lonTabDir'}/managers.tab")) {
while (my $configline=<$config>) {	while (my $configline=<$config>) {
chomp($configline);	chomp($configline);
next if ($configline =~ /^\#/);	next if ($configline =~ /^\#/);
Line 12337 were new keys. I.E. 1:foo will become 1:	Line 14319 were new keys. I.E. 1:foo will become 1:

Calling convention:	Calling convention:

my %record=&Apache::lonnet::restore($symb,$courseid,$domain,$uname,$home);	my %record=&Apache::lonnet::restore($symb,$courseid,$domain,$uname);
&Apache::lonnet::cstore(\%newrecord,$symb,$courseid,$domain,$uname,$home);	&Apache::lonnet::cstore(\%newrecord,$symb,$courseid,$domain,$uname,$laststore);

For more detailed information, see lonnet specific documentation.	For more detailed information, see lonnet specific documentation.

Line 12421 the answer, and also caches if there is	Line 14403 the answer, and also caches if there is

=item *	=item *
X<idget()>	X<idget()>
B<idget($udom,@ids)>: find the usernames behind a list of IDs	B<idget($udom,$idsref,$namespace)>: find the usernames behind either
(IDs are a unique resource in a domain, there must be only 1 ID per	a list of student/employee IDs or clicker IDs
username, and only 1 username per ID in a specific domain) (returns	(student/employee IDs are a unique resource in a domain, there must be
hash: id=>name,id=>name)	only 1 ID per username, and only 1 username per ID in a specific domain).
	clickerIDs are not necessarily unique, as students might share clickers.
	(returns hash: id=>name,id=>name)

=item *	=item *
X<idrget()>	X<idrget()>
Line 12433 usernames (returns hash: name=>id,name=>	Line 14417 usernames (returns hash: name=>id,name=>

=item *	=item *
X<idput()>	X<idput()>
B<idput($udom,%ids)>: store away a list of names and associated IDs	B<idput($udom,$idsref,$uhome,$namespace)>: store away a list of
	names and associated student/employee IDs or clicker IDs.

	=item *
	X<iddel()>
	B<iddel($udom,$idshashref,$uhome,$namespace)>: delete unwanted
	student/employee ID or clicker ID username look-ups from domain.
	The homeserver ($uhome) and namespace ($namespace) are optional.
	If no $uhome is provided, it will be determined usig &homeserver()
	for each user. If no $namespace is provided, the default is ids.

	=item *
	X<updateclickers()>
	B<updateclickers($udom,$action,$idshashref,$uhome,$critical)>: update
	clicker ID-to-username look-ups in clickers.db on library server.
	Permitted actions are add or del (i.e., add or delete). The
	clickers.db contains clickerID as keys (escaped), and each corresponding
	value is an escaped comma-separated list of usernames (for whom the
	library server is the homeserver), who registered that particular ID.
	If $critical is true, the update will be sent via &critical, otherwise
	&reply() will be used.

=item *	=item *
X<rolesinit()>	X<rolesinit()>
Line 12474 escaped strings of the action recorded i	Line 14478 escaped strings of the action recorded i

=item *	=item *

allowed($priv,$uri,$symb,$role) : check for a user privilege; returns codes for allowed actions	allowed($priv,$uri,$symb,$role,$clientip,$noblockcheck) : check for a user privilege;
	returns codes for allowed actions.

	The first argument is required, all others are optional.

	$priv is the privilege being checked.
	$uri contains additional information about what is being checked for access (e.g.,
	URL, course ID etc.).
	$symb is the unique resource instance identifier in a course; if needed,
	but not provided, it will be retrieved via a call to &symbread().
	$role is the role for which a priv is being checked (only used if priv is evb).
	$clientip is the user's IP address (only used when checking for access to portfolio
	files).
	$noblockcheck, if true, skips calls to &has_comm_blocking() for the bre priv. This
	prevents recursive calls to &allowed.

F: full access	F: full access
U,I,K: authentication modes (cxx only)	U,I,K: authentication modes (cxx only)
'': forbidden	'': forbidden
1: user needs to choose course	1: user needs to choose course
2: browse allowed	2: browse allowed
A: passphrase authentication needed	A: passphrase authentication needed
	B: access temporarily blocked because of a blocking event in a course.

=item *	=item *

Line 12499 in which case the null string is returne	Line 14519 in which case the null string is returne

=item *	=item *

definerole($rolename,$sysrole,$domrole,$courole) : define role; define a custom	definerole($rolename,$sysrole,$domrole,$courole,$uname,$udom) : define role;
role rolename set privileges in format of lonTabs/roles.tab for system, domain,	define a custom role rolename set privileges in format of lonTabs/roles.tab
and course level	for system, domain, and course level. $uname and $udom are optional (current
	user's username and domain will be used when either of $uname or $udom are absent.

=item *	=item *

Line 12515 environment). If no custom name is defi	Line 14536 environment). If no custom name is defi

=item *	=item *

get_my_roles($uname,$udom,$context,$types,$roles,$roledoms,$withsec) :	get_my_roles($uname,$udom,$context,$types,$roles,$roledoms,$withsec,$hidepriv) :
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,
Line 12538 Additional optional arguments are: $type	Line 14559 Additional optional arguments are: $type
to certain user status types -- previous (expired roles), active (currently	to certain user status types -- previous (expired roles), active (currently
available roles) or future (roles available in the future), and	available roles) or future (roles available in the future), and
$hideprivileged -- if true will not report course roles for users who	$hideprivileged -- if true will not report course roles for users who
have active Domain Coordinator or Super User roles.	have active Domain Coordinator role in course's domain or in additional
	domains (specified in 'Domains to check for privileged users' in course
	environment -- set via: Course Settings -> Classlists and staff listing).

	=item *

	privileged($username,$domain,$possdomains,$possroles) : returns 1 if user
	$username:$domain is a privileged user (e.g., Domain Coordinator or Super User)
	$possdomains and $possroles are optional array refs -- to domains to check and
	roles to check. If $possdomains is not specified, a dump will be done of the
	users' roles.db to check for a dc or su role in any domain. This can be
	time consuming if &privileged is called repeatedly (e.g., when displaying a
	classlist), so in such cases, supplying a $possdomains array is preferred, as
	this then allows &privileged_by_domain() to be used, which caches the identity
	of privileged users, eliminating the need for repeated calls to &dump().

	=item *

	privileged_by_domain($possdomains,$roles) : returns a hash of a hash of a hash,
	where the outer hash keys are domains specified in the $possdomains array ref,
	next inner hash keys are privileged roles specified in the $roles array ref,
	and the innermost hash contains key = value pairs for username:domain = end:start
	for active or future "privileged" users with that role in that domain. To avoid
	repeated dumps of domain roles -- via &get_domain_roles() -- contents of the
	innerhash are cached using priv_$role and $dom as the identifiers.

=back	=back

Line 12581 or when Autoupdate.pl is run by cron in	Line 14626 or when Autoupdate.pl is run by cron in
modifystudent	modifystudent

modify a student's 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 user's environment.
This means the envoking user must be a course coordinator or otherwise	This means the invoking user must be a course coordinator or otherwise
associated with a course.	associated with a course.

This call is essentially a wrapper for lonnet::modifyuser and	This call is essentially a wrapper for lonnet::modifyuser and
Line 12632 Inputs:	Line 14677 Inputs:

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

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

	=item B<$credits> Number of credits student will earn from this class - only needs to be supplied if value needs to be different from default credits for class.

=back	=back

Line 12640 Inputs:	Line 14687 Inputs:

modify_student_enrollment	modify_student_enrollment

Change a students enrollment status in a class. The environment variable	Change a student's enrollment status in a class. The environment variable
'role.request.course' must be defined for this function to proceed.	'role.request.course' must be defined for this function to proceed.

Inputs:	Inputs:

=over 4	=over 4

=item $udom, students domain	=item $udom, student's domain

=item $uname, students name	=item $uname, student's name

=item $uid, students user id	=item $uid, student's user id

=item $first, students first name	=item $first, student's first name

=item $middle	=item $middle

Line 12677 Inputs:	Line 14724 Inputs:

=item $context	=item $context

	=item $credits, number of credits student will earn from this class

	=item $instsec, institutional course section code for student

=back	=back


Line 12733 If defined, the supplied username is use	Line 14784 If defined, the supplied username is use
resdata($name,$domain,$type,@which) : request for current parameter	resdata($name,$domain,$type,@which) : request for current parameter
setting for a specific $type, where $type is either 'course' or 'user',	setting for a specific $type, where $type is either 'course' or 'user',
@what should be a list of parameters to ask about. This routine caches	@what should be a list of parameters to ask about. This routine caches
answers for 5 minutes.	answers for 10 minutes.

=item *	=item *

Line 12742 data base, returning a hash that is keye	Line 14793 data base, returning a hash that is keye
values that are the resource value. I believe that the timestamps and	values that are the resource value. I believe that the timestamps and
versions are also returned.	versions are also returned.

	get_numsuppfiles($cnum,$cdom) : retrieve number of files in a course's
	supplemental content area. This routine caches the number of files for
	10 minutes.

=back	=back

=head2 Course Modification	=head2 Course Modification
Line 12801 resource. Expects the local filesystem p	Line 14856 resource. Expects the local filesystem p

=item *	=item *

EXT($varname,$symb,$udom,$uname) : evaluates and returns the value of	EXT($varname,$symb,$udom,$uname,$usection,$recurse,$cid) : evaluates
a vairety of different possible values, $varname should be a request	and returns the value of a variety of different possible values,
string, and the other parameters can be used to specify who and what	$varname should be a request string, and the other parameters can be
one is asking about.	used to specify who and what one is asking about. Ordinarily, $cid
	does not need to be specified, as it is retrived from
	$env{'request.course.id'}, but &Apache::lonnet::EXT() is called
	within lonuserstate::loadmap() when initializing a course, before
	$env{'request.course.id'} has been set, so it needs to be provided
	in that one case.

Possible values for $varname are environment.lastname (or other item	Possible values for $varname are environment.lastname (or other item
from the envirnment hash), user.name (or someother aspect about the	from the envirnment hash), user.name (or someother aspect about the
Line 12822 condval($condidx) : value of condition i	Line 14882 condval($condidx) : value of condition i

=item *	=item *

metadata($uri,$what,$liburi,$prefix,$depthcount) : request a	metadata($uri,$what,$toolsymb,$liburi,$prefix,$depthcount) : request a
resource's metadata, $what should be either a specific key, or either	resource's metadata, $what should be either a specific key, or either
'keys' (to get a list of possible keys) or 'packages' to get a list of	'keys' (to get a list of possible keys) or 'packages' to get a list of
packages that this resource currently uses, the last 3 arguments are only used internally for recursive metadata.	packages that this resource currently uses, the last 3 arguments are
	only used internally for recursive metadata.

this function automatically caches all requests	the toolsymb is only used where the uri is for an external tool (for which
	the uri as well as the symb are guaranteed to be unique).

	this function automatically caches all requests except any made recursively
	to retrieve a list of metadata keys for an imported library file ($liburi is
	defined).

=item *	=item *

Line 12837 will be stored for query	Line 14903 will be stored for query

=item *	=item *

symbread($filename) : return symbolic list entry (filename argument optional);	symbread($filename,$donotrecurse,$ignorecachednull,$checkforblock,$possibles) :
	return symbolic list entry (all arguments optional).

	Args: filename is the filename (including path) for the file for which a symb
	is required; donotrecurse, if true will prevent calls to allowed() being made
	to check access status if more than one resource was found in the bighash
	(see rev. 1.249) to avoid an infinite loop if an ambiguous resource is part of
	a randompick); ignorecachednull, if true will prevent a symb of '' being
	returned if $env{$cache_str} is defined as ''; checkforblock if true will
	cause possible symbs to be checked to determine if they are subject to content
	blocking, if so they will not be included as possible symbs; possibles is a
	ref to a hash, which, as a side effect, will be populated with all possible
	symbs (content blocking not tested).

returns the data handle	returns the data handle

=item *	=item *
Line 12938 homeserver.	Line 15017 homeserver.

=item *	=item *

store($storehash,$symb,$namespace,$udom,$uname) : stores hash permanently	store($storehash,$symb,$namespace,$udom,$uname,$laststore) : stores hash
for this url; hashref needs to be given and should be a \%hashname; the	permanently for this url; hashref needs to be given and should be a \%hashname;
remaining args aren't required and if they aren't passed or are '' they will	the remaining args aren't required and if they aren't passed or are '' they will
be derived from the env	be derived from the env (with the exception of $laststore, which is an
	optional arg used when a user's submission is stored in grading).
	$laststore is $version=$timestamp, where $version is the most recent version
	number retrieved for the corresponding $symb in the $namespace db file, and
	$timestamp is the timestamp for that transaction (UNIX time).
	$laststore is currently only passed when cstore() is called by
	structuretags::finalize_storage().

=item *	=item *

cstore($storehash,$symb,$namespace,$udom,$uname) : same as store but	cstore($storehash,$symb,$namespace,$udom,$uname,$laststore) : same as store
uses critical subroutine	but uses critical subroutine

=item *	=item *

Line 12969 $range should be either an integer '100'	Line 15054 $range should be either an integer '100'

=item *	=item *

putstore($namespace,$symb,$version,$storehash,$udomain,$uname) :	putstore($namespace,$symb,$version,$storehash,$udomain,$uname,$tolog) :
replaces a &store() version of data with a replacement set of data	replaces a &store() version of data with a replacement set of data
for a particular resource in a namespace passed in the $storehash hash	for a particular resource in a namespace passed in the $storehash hash
reference	reference. If $tolog is true, the transaction is logged in the courselog
	with an action=PUTSTORE.

=item *	=item *

Line 13082 server ($udom and $uhome are optional)	Line 15168 server ($udom and $uhome are optional)

=item *	=item *

get_domain_defaults($target_domain) : returns hash with defaults for	get_domain_defaults($target_domain,$ignore_cache) : returns hash with defaults
authentication and language in the domain. Keys are: auth_def, auth_arg_def,	for: authentication, language, quotas, timezone, date locale, and portal URL in
lang_def; corresponsing values are authentication type (internal, krb4, krb5,	the target domain.
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	May also include additional key => value pairs for the following groups:
(if available), or lastly from values in lonTabs/dns_domain,tab,
or lonTabs/domain.tab.	=over

	=item
	disk quotas (MB allocated by default to portfolios and authoring spaces).

	=over

	=item defaultquota, authorquota

	=back

	=item
	tools (availability of aboutme page, blog, webDAV access for authoring spaces,
	portfolio for users).

	=over

	=item
	aboutme, blog, webdav, portfolio

	=back

	=item
	requestcourses: ability to request courses, and how requests are processed.

	=over

	=item
	official, unofficial, community, textbook, placement

	=back

	=item
	inststatus: types of institutional affiliation, and order in which they are displayed.

	=over

	=item
	inststatustypes, inststatusorder, inststatusguest

	=back

	=item
	coursedefaults: can PDF forms can be created, default credits for courses, default quotas (MB)
	for course's uploaded content.

	=over

	=item
	canuse_pdfforms, officialcredits, unofficialcredits, textbookcredits, officialquota, unofficialquota,
	communityquota, textbookquota, placementquota

	=back

	=item
	usersessions: set options for hosting of your users in other domains, and hosting of users from other domains
	on your servers.

	=over

	=item
	remotesessions, hostedsessions

	=back

	=back

	In cases where a domain coordinator has never used the "Set Domain Configuration"
	utility to create a configuration.db file on a domain's primary library server
	only the following domain defaults: auth_def, auth_arg_def, lang_def
	-- corresponding values are authentication type (internal, krb4, krb5,
	or localauth), initial password or a kerberos realm, language (e.g., en-us) --
	will be available. Values are retrieved from cache (if current), unless the
	optional $ignore_cache arg is true, or from domain's configuration.db (if available),
	or lastly from values in lonTabs/dns_domain,tab, or lonTabs/domain.tab.

	Typical usage:

%domdefaults = &get_auth_defaults($target_domain);	%domdefaults = &get_domain_defaults($target_domain);

=back	=back

Line 13315 filelocation except for hrefs	Line 15477 filelocation except for hrefs

=item *	=item *

declutter() : declutters URLs (remove docroot, beginning slashes, 'res' etc)	declutter() : declutters URLs -- remove beginning slashes, 'res' etc.
	also removes beginning /home/httpd/html unless /priv/ follows it.

=back	=back

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

Removed from v.1.1212
changed lines
	Added in v.1.1375