loncom/lonnet/perl/lonnet.pm - diff

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Diff for /loncom/lonnet/perl/lonnet.pm between versions 1.1172.2.21 and 1.1363

version 1.1172.2.21, 2013/03/18 00:30:46	version 1.1363, 2017/12/22 17:19:43
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;

use vars qw(%perlvar %spareid %pr %prp $memcache %packagetab $tmpdir $apache
	use Encode;

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

Line 89 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 97 use File::MMagic;	Line 99 use File::MMagic;
use LONCAPA qw(:DEFAULT :match);	use LONCAPA qw(:DEFAULT :match);
use LONCAPA::Configuration;	use LONCAPA::Configuration;
use LONCAPA::lonmetadata;	use LONCAPA::lonmetadata;
	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;

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


# ------------------------------------ Logging (parameters, docs, slots, roles)	# ------------------------------------ Logging (parameters, docs, slots, roles)
{	{
my $logid;	my $logid;
Line 122 our @EXPORT = qw(%env);	Line 127 our @EXPORT = qw(%env);
$logid ++;	$logid ++;
my $now = time();	my $now = time();
my $id=$now.'00000'.$$.'00000'.$logid;	my $id=$now.'00000'.$$.'00000'.$logid;
my $logentry = {	my $logentry = {
$id => {	$id => {
'exe_uname' => $env{'user.name'},	'exe_uname' => $env{'user.name'},
'exe_udom' => $env{'user.domain'},	'exe_udom' => $env{'user.domain'},
'exe_time' => $now,	'exe_time' => $now,
'exe_ip' => $ENV{'REMOTE_ADDR'},	'exe_ip' => $ENV{'REMOTE_ADDR'},
'delflag' => $delflag,	'delflag' => $delflag,
'logentry' => $storehash,	'logentry' => $storehash,
'uname' => $uname,	'uname' => $uname,
'udom' => $udom,	'udom' => $udom,
}	}
};	};
return &put('nohist_'.$hash_name,$logentry,$cdom,$cnum);	return &put('nohist_'.$hash_name,$logentry,$cdom,$cnum);
}	}
}	}

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 153 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 166 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 224 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 258 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 351 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 367 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 $lockfile) { # Need to wait for the lockfile to disappear.
sleep(1);	sleep(0.1);
}	}
# At this point, either a loncnew parent is listening or an old lonc	# At this point, either a loncnew parent is listening or an old lonc
# or loncnew child is listening so we can connect or everything's dead.	# or loncnew child is listening so we can connect or everything's dead.
Line 385 sub subreply {	Line 437 sub subreply {
} else {	} else {
&create_connection(&hostname($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 414 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 433 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 461 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 473 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 598 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 613 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 630 sub check_for_valid_session {	Line 704 sub check_for_valid_session {
return undef;	return undef;
}	}

if (($r->user() eq '') && ($apache >= 2.4)) {	if (ref($userhashref) eq 'HASH') {
if ($disk_env{'user.domain'} eq $r->dir_config('lonDefDomain')) {	$userhashref->{'name'} = $disk_env{'user.name'};
$r->user($disk_env{'user.name'});	$userhashref->{'domain'} = $disk_env{'user.domain'};
} else {	$userhashref->{'lti'} = $disk_env{'request.lti.login'};
$r->user($disk_env{'user.name'}.':'.$disk_env{'user.domain'});
}
}	}

return $handle;	return $handle;
Line 671 sub appenv {	Line 743 sub appenv {
if (($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;	$refused = 0;
}	}
Line 844 sub spareserver {	Line 916 sub spareserver {
if (ref($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, $lowest_load);
}	}
Line 858 sub spareserver {	Line 928 sub spareserver {
if (!$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 885 sub spareserver {	Line 953 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 946 sub has_user_session {	Line 1024 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 = '';	$isredirect = '';
Line 973 sub choose_server {	Line 1068 sub choose_server {
}	}
} else {	} else {
($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 1146 sub can_host_session {	Line 1241 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 1243 sub get_lonbalancer_config {	Line 1346 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 1252 sub check_loadbalancing {	Line 1355 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 $intdom)) {
Line 1267 sub check_loadbalancing {	Line 1370 sub check_loadbalancing {
&Apache::lonnet::get_dom('configuration',['loadbalancing'],$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($result) eq 'HASH') {
($is_balancer,$currtargets,$currrules) =	($is_balancer,$currtargets,$currrules) =
&check_balancer_result($result,@hosts);	&check_balancer_result($result,@hosts);
if ($is_balancer) {	if ($is_balancer) {
if (ref($currrules) eq 'HASH') {	if (ref($currrules) eq 'HASH') {
Line 1320 sub check_loadbalancing {	Line 1425 sub check_loadbalancing {
}	}
}	}
} elsif (($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($result) eq 'HASH') {
($is_balancer,$currtargets,$currrules) =	($is_balancer,$currtargets,$currrules) =
&check_balancer_result($result,@hosts);	&check_balancer_result($result,@hosts);
if ($is_balancer) {	if ($is_balancer) {
if (ref($currrules) eq 'HASH') {	if (ref($currrules) eq 'HASH') {
Line 1345 sub check_loadbalancing {	Line 1452 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 $lowest_load = 30000;
Line 1381 sub check_loadbalancing {	Line 1497 sub check_loadbalancing {
}	}
}	}
}	}
if (($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,
'user.loadbalcheck.time' => time});	&appenv({'user.loadbalexempt' => $lonhost,
	'user.loadbalcheck.time' => time});
	}
}	}
}	}
}	}
Line 1490 sub internet_dom_servers {	Line 1608 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 1515 sub homeserver {	Line 1727 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 1533 sub idget {	Line 1761 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 1551 sub idrget {	Line 1779 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)) {	foreach my $server (keys(%servers)) {
&critical('idput:'.$udom.':'.$servers{$server},$server);	$servers{$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)) {
	$servers{$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 1590 sub dump_dom {	Line 1929 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 1597 sub get_dom {	Line 1937 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 1610 sub get_dom {	Line 1951 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 1654 sub put_dom {	Line 2000 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",$uhome);
	}
} else {	} else {
&logthis("put_dom failed - no homeserver and/or domain");	&logthis("put_dom failed - no homeserver and/or domain");
}	}
Line 1700 sub retrieve_inst_usertypes {	Line 2050 sub retrieve_inst_usertypes {
my %domdefs = &Apache::lonnet::get_domain_defaults($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(/:/,$rep);
Line 1723 sub retrieve_inst_usertypes {	Line 2072 sub retrieve_inst_usertypes {
push(@order,&unescape($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 1746 sub inst_directory_query {	Line 2095 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 1787 sub usersearch {	Line 2146 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($query).':'.
Line 1872 sub get_instuser {	Line 2239 sub get_instuser {
return ($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 1951 sub inst_userrules {	Line 2375 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 1964 sub get_domain_defaults {	Line 2391 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 1972 sub get_domain_defaults {	Line 2402 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 1982 sub get_domain_defaults {	Line 2415 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 1999 sub get_domain_defaults {	Line 2435 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') {
if (ref($domconfig{'coursedefaults'}{'coursecredits'}) eq 'HASH') {	$domdefaults{'canuse_pdfforms'} = $domconfig{'coursedefaults'}{'canuse_pdfforms'};
$domdefaults{'officialcredits'} = $domconfig{'coursedefaults'}{'coursecredits'}{'official'};	$domdefaults{'usejsme'} = $domconfig{'coursedefaults'}{'usejsme'};
$domdefaults{'unofficialcredits'} = $domconfig{'coursedefaults'}{'coursecredits'}{'unofficial'};	$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($domconfig{'usersessions'}{'remote'}) eq 'HASH') {
Line 2016 sub get_domain_defaults {	Line 2483 sub get_domain_defaults {
if (ref($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}{$item};
	}
	}
	}
	}
}	}
&Apache::lonnet::do_cache_new('domdefaults',$domain,\%domdefaults,	if (ref($domconfig{'coursecategories'}) eq 'HASH') {
$cachetime);	$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'} = $domconfig{'ssl'}{'connfrom'};
	}
	}
	if (ref($domconfig{'trust'}) eq 'HASH') {
	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 2258 sub make_key {	Line 2809 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 $id is not defined"); }
Line 2282 sub is_cached_new {	Line 2835 sub is_cached_new {
if ($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 2304 sub do_cache_new {	Line 2858 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 $max_time=0;
Line 2526 sub repcopy {	Line 3080 sub repcopy {
mkdir($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 2538 sub repcopy {	Line 3096 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 2601 sub absolute_url {	Line 3164 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 $response= &LONCAPA::LWPReq::makerequest($lonhost,$request,'',\%perlvar);

if (wantarray) {	if (wantarray) {
return ($response->content, $response);	return ($response->content, $response);
} else {	} else {
Line 2624 sub ssi {	Line 3193 sub ssi {

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 2634 sub externalssi {	Line 3202 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 2650 sub allowuploaded {	Line 3283 sub allowuploaded {
#	#
# Determine if the current user should be able to edit a particular resource,	# Determine if the current user should be able to edit a particular resource,
# when viewing in course context.	# when viewing in course context.
# (a) When viewing resource used to determine if "Edit" item is included in	# (a) When viewing resource used to determine if "Edit" item is included in
# Functions.	# Functions.
# (b) When displaying folder contents in course editor, used to determine if	# (b) When displaying folder contents in course editor, used to determine if
# "Edit" link will be displayed alongside resource.	# "Edit" link will be displayed alongside resource.
Line 2658 sub allowuploaded {	Line 3291 sub allowuploaded {
# input: six args -- filename (decluttered), course number, course domain,	# input: six args -- filename (decluttered), course number, course domain,
# url, symb (if registered) and group (if this is a group	# url, symb (if registered) and group (if this is a group
# item -- e.g., bulletin board, group page etc.).	# item -- e.g., bulletin board, group page etc.).
# output: array of five scalars --	# output: array of five scalars --
# $cfile -- url for file editing if editable on current server	# $cfile -- url for file editing if editable on current server
# $home -- homeserver of resource (i.e., for author if published,	# $home -- homeserver of resource (i.e., for author if published,
# or course if uploaded.).	# or course if uploaded.).
# $switchserver -- 1 if server switch will be needed.	# $switchserver -- 1 if server switch will be needed.
# $forceedit -- 1 if icon/link should be to go to edit mode	# $forceedit -- 1 if icon/link should be to go to edit mode
# $forceview -- 1 if icon/link should be to go to view mode	# $forceview -- 1 if icon/link should be to go to view mode
#	#

Line 2752 sub can_edit_resource {	Line 3385 sub can_edit_resource {
$forceedit = 1;	$forceedit = 1;
}	}
$cfile = $resurl;	$cfile = $resurl;
} elsif (($resurl ne '') && (&is_on_map($resurl))) {	} elsif (($resurl ne '') && (&is_on_map($resurl))) {
if ($resurl =~ m{^/adm/$match_domain/$match_username/\d+/smppg\|bulletinboard$}) {	if ($resurl =~ m{^/adm/$match_domain/$match_username/\d+/smppg\|bulletinboard$}) {
$incourse = 1;	$incourse = 1;
if ($env{'form.forceedit'}) {	if ($env{'form.forceedit'}) {
Line 2772 sub can_edit_resource {	Line 3405 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 ($env{'form.forceedit'}) {
Line 2783 sub can_edit_resource {	Line 3424 sub can_edit_resource {
}	}
} elsif ($resurl eq '/res/lib/templates/simpleproblem.problem/smpedit') {	} elsif ($resurl eq '/res/lib/templates/simpleproblem.problem/smpedit') {
my $template = '/res/lib/templates/simpleproblem.problem';	my $template = '/res/lib/templates/simpleproblem.problem';
if (&is_on_map($template)) {	if (&is_on_map($template)) {
$incourse = 1;	$incourse = 1;
$forceview = 1;	$forceview = 1;
$cfile = $template;	$cfile = $template;
Line 2796 sub can_edit_resource {	Line 3437 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 2805 sub can_edit_resource {	Line 3454 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 2823 sub can_edit_resource {	Line 3484 sub can_edit_resource {
$cfile=$file;	$cfile=$file;
}	}
}	}
if (($cfile ne '') && (!$incourse \|\| $uploaded) &&	if (($cfile ne '') && (!$incourse \|\| $uploaded) &&
(($home ne '') && ($home ne 'no_host'))) {	(($home ne '') && ($home ne 'no_host'))) {
my @ids=&current_machine_ids();	my @ids=&current_machine_ids();
unless (grep(/^\Q$home\E$/,@ids)) {	unless (grep(/^\Q$home\E$/,@ids)) {
Line 2849 sub in_course {	Line 3510 sub in_course {
my ($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 2951 sub process_coursefile {	Line 3616 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 3009 sub store_edited_file {	Line 3674 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,$docudom);
Line 3125 sub userfileupload {	Line 3790 sub userfileupload {
'_'.$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 = $env{'user.name'};
Line 3160 sub userfileupload {	Line 3825 sub userfileupload {
mkdir($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 3201 sub userfileupload {	Line 3866 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 3235 sub finishuserfileupload {	Line 3900 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 3293 sub finishuserfileupload {	Line 3958 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;	$fetchthumb = 1;
}	}
Line 3351 sub extract_embedded_items {	Line 4017 sub extract_embedded_items {
&add_filetype($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 $src;
Line 3439 sub extract_embedded_items {	Line 4107 sub extract_embedded_items {
}	}
}	}
}	}
	if (lc($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 3657 sub flushcourselogs {	Line 4343 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 3672 sub flushcourselogs {	Line 4358 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 '.$tryserver);
}	}
}	}
Line 3795 sub userrolelog {	Line 4490 sub userrolelog {
{$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 3882 sub get_course_adv_roles {	Line 4577 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'},$coursehash{'num'});
Line 3894 sub get_course_adv_roles {	Line 4593 sub get_course_adv_roles {
if (($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 3938 sub get_my_roles {	Line 4624 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 4007 sub get_my_roles {	Line 4692 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 4045 sub get_my_roles {	Line 4717 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 4058 sub postannounce {	Line 4919 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($fh);
Line 4120 sub courseiddump {	Line 4981 sub courseiddump {
my ($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 4132 sub courseiddump {	Line 4994 sub courseiddump {

if (($domfilter eq '') \|\|	if (($domfilter eq '') \|\|
(&host_domain($tryserver) eq $domfilter)) {	(&host_domain($tryserver) eq $domfilter)) {
my $rep =	my $rep;
&reply('courseiddump:'.&host_domain($tryserver).':'.	if (grep { $_ eq $tryserver } current_machine_ids()) {
$sincefilter.':'.&escape($descfilter).':'.	$rep = LONCAPA::Lond::dump_course_id_handler(
&escape($instcodefilter).':'.&escape($ownerfilter).	join(":", (&host_domain($tryserver), $sincefilter,
':'.&escape($coursefilter).':'.&escape($typefilter).	&escape($descfilter), &escape($instcodefilter),
':'.&escape($regexp_ok).':'.$as_hash.':'.	&escape($ownerfilter), &escape($coursefilter),
&escape($selfenrollonly).':'.&escape($catfilter).':'.	&escape($typefilter), &escape($regexp_ok),
$showhidden.':'.$caller.':'.&escape($cloner).':'.	$as_hash, &escape($selfenrollonly),
&escape($cc_clone).':'.$cloneonly.':'.	&escape($catfilter), $showhidden, $caller,
&escape($createdbefore).':'.&escape($createdafter).':'.	&escape($cloner), &escape($cc_clone), $cloneonly,
&escape($creationcontext).':'.$domcloner,	&escape($createdbefore), &escape($createdafter),
$tryserver);	&escape($creationcontext),$domcloner,$hasuniquecode,
	$reqcrsdom,&escape($reqinstcode))));
	} else {
	$rep = &reply('courseiddump:'.&host_domain($tryserver).':'.
	$sincefilter.':'.&escape($descfilter).':'.
	&escape($instcodefilter).':'.&escape($ownerfilter).
	':'.&escape($coursefilter).':'.&escape($typefilter).
	':'.&escape($regexp_ok).':'.$as_hash.':'.
	&escape($selfenrollonly).':'.&escape($catfilter).':'.
	$showhidden.':'.$caller.':'.&escape($cloner).':'.
	&escape($cc_clone).':'.$cloneonly.':'.
	&escape($createdbefore).':'.&escape($createdafter).':'.
	&escape($creationcontext).':'.$domcloner.':'.$hasuniquecode.
	':'.$reqcrsdom.':'.&escape($reqinstcode),$tryserver);
	}

my @pairs=split(/\&/,$rep);	my @pairs=split(/\&/,$rep);
foreach my $item (@pairs) {	foreach my $item (@pairs) {
my ($key,$value)=split(/\=/,$item,2);	my ($key,$value)=split(/\=/,$item,2);
Line 4249 sub get_domain_roles {	Line 5126 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 4269 sub get_domain_roles {	Line 5146 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 4280 my $cachedkey='';	Line 5172 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 4294 sub load_all_first_access {	Line 5187 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 4306 sub get_first_access {	Line 5199 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 4342 sub set_first_access {	Line 5235 sub set_first_access {
return 'already_set';	return 'already_set';
}	}
}	}

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

sub expirespread {	sub expirespread {
Line 4712 sub tmprestore {	Line 5606 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 4742 sub store {	Line 5636 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 4779 sub cstore {	Line 5673 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 4791 sub restore {	Line 5685 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 4928 sub update_released_required {	Line 5825 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 4972 sub rolesinit {	Line 5942 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 5045 sub rolesinit {	Line 6015 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);
}	}
Line 5064 sub set_arearole {	Line 6035 sub set_arearole {
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 5083 sub custom_roleprivs {	Line 6054 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 5091 sub custom_roleprivs {	Line 6066 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 $access = 1;
Line 5125 sub set_userprivs {	Line 6142 sub set_userprivs {
my ($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 5172 sub set_userprivs {	Line 6190 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 5180 sub set_userprivs {	Line 6199 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 5225 sub role_status {	Line 6244 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 5303 sub delete_env_groupprivs {	Line 6323 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'},1);	$env{'user.name'},1);
my %ccrole = ();	my %rolehash = ();
&standard_roleprivs(\%ccrole,$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 5389 sub del {	Line 6426 sub del {

# -------------------------------------------------------------- dump interface	# -------------------------------------------------------------- dump interface

	sub unserialize {
	my ($rep, $escapedkeys) = @_;

	return {} if $rep =~ /^error/;

	my %returnhash=();
	foreach my $item (split(/\&/,$rep)) {
	my ($key, $value) = split(/=/, $item, 2);
	$key = unescape($key) unless $escapedkeys;
	next if $key =~ /^error: 2 /;
	$returnhash{$key} = &thaw_unescape($value);
	}
	#return %returnhash;
	return \%returnhash;
	}

	# see Lond::dump_with_regexp
	# if $escapedkeys hash keys won't get unescaped.
sub dump {	sub dump {
my ($namespace,$udomain,$uname,$regexp,$range)=@_;	my ($namespace,$udomain,$uname,$regexp,$range,$escapedkeys)=@_;
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);

if ($regexp) {	if ($regexp) {
$regexp=&escape($regexp);	$regexp=&escape($regexp);
} else {	} else {
$regexp='.';	$regexp='.';
	}
	if (grep { $_ eq $uhome } current_machine_ids()) {
	# user is hosted on this machine
	my $reply = LONCAPA::Lond::dump_with_regexp(join(":", ($udomain,
	$uname, $namespace, $regexp, $range)), $perlvar{'lonVersion'});
	return %{unserialize($reply, $escapedkeys)};
}	}
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(/\&/,$rep);
Line 5406 sub dump {	Line 6467 sub dump {
if (!($rep =~ /^error/ )) {	if (!($rep =~ /^error/ )) {
foreach my $item (@pairs) {	foreach my $item (@pairs) {
my ($key,$value)=split(/=/,$item,2);	my ($key,$value)=split(/=/,$item,2);
$key = &unescape($key);	$key = unescape($key) unless $escapedkeys;
	#$key = &unescape($key);
next if ($key =~ /^error: 2 /);	next if ($key =~ /^error: 2 /);
$returnhash{$key}=&thaw_unescape($value);	$returnhash{$key}=&thaw_unescape($value);
}	}
Line 5419 sub dump {	Line 6481 sub dump {

sub dumpstore {	sub dumpstore {
my ($namespace,$udomain,$uname,$regexp,$range)=@_;	my ($namespace,$udomain,$uname,$regexp,$range)=@_;
if (!$udomain) { $udomain=$env{'user.domain'}; }	# same as dump but keys must be escaped. They may contain colon separated
if (!$uname) { $uname=$env{'user.name'}; }	# lists of values that may themself contain colons (e.g. symbs).
my $uhome=&homeserver($uname,$udomain);	return &dump($namespace, $udomain, $uname, $regexp, $range, 1);
if ($regexp) {
$regexp=&escape($regexp);
} else {
$regexp='.';
}
my $rep=&reply("dump:$udomain:$uname:$namespace:$regexp:$range",$uhome);
my @pairs=split(/\&/,$rep);
my %returnhash=();
foreach my $item (@pairs) {
my ($key,$value)=split(/=/,$item,2);
next if ($key =~ /^error: 2 /);
$returnhash{$key}=&thaw_unescape($value);
}
return %returnhash;
}	}

# -------------------------------------------------------------- keys interface	# -------------------------------------------------------------- keys interface
Line 5461 sub currentdump {	Line 6509 sub currentdump {
$sdom = $env{'user.domain'} if (! defined($sdom));	$sdom = $env{'user.domain'} if (! defined($sdom));
$sname = $env{'user.name'} if (! defined($sname));	$sname = $env{'user.name'} if (! defined($sname));
my $uhome = &homeserver($sname,$sdom);	my $uhome = &homeserver($sname,$sdom);
my $rep=reply('currentdump:'.$sdom.':'.$sname.':'.$courseid,$uhome);	my $rep;

	if (grep { $_ eq $uhome } current_machine_ids()) {
	$rep = LONCAPA::Lond::dump_profile_database(join(":", ($sdom, $sname,
	$courseid)));
	} else {
	$rep = reply('currentdump:'.$sdom.':'.$sname.':'.$courseid,$uhome);
	}

return if ($rep =~ /^(error:\|no_such_host)/);	return if ($rep =~ /^(error:\|no_such_host)/);
#	#
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 5582 sub newput {	Line 6638 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 5596 sub putstore {	Line 6652 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 5689 sub tmpget {	Line 6756 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($value);
}	}
return %returnhash;	return %returnhash;
Line 5704 sub tmpdel {	Line 6773 sub tmpdel {
return &reply("tmpdel:$token",$server);	return &reply("tmpdel:$token",$server);
}	}

# ------------------------------------------------------------ get_timebased_id	# ------------------------------------------------------------ get_timebased_id

sub get_timebased_id {	sub get_timebased_id {
my ($prefix,$keyid,$namespace,$cdom,$cnum,$idtype,$who,$locktries,	my ($prefix,$keyid,$namespace,$cdom,$cnum,$idtype,$who,$locktries,
$maxtries) = @_;	$maxtries) = @_;
my ($newid,$error,$dellock);	my ($newid,$error,$dellock);
unless (($prefix =~ /^\w+$/) && ($keyid =~ /^\w+$/) && ($namespace ne '')) {	unless (($prefix =~ /^\w+$/) && ($keyid =~ /^\w+$/) && ($namespace ne '')) {
return ('','ok','invalid call to get suffix');	return ('','ok','invalid call to get suffix');
}	}

Line 5724 sub get_timebased_id {	Line 6793 sub get_timebased_id {
if (!$maxtries) {	if (!$maxtries) {
$maxtries = 10;	$maxtries = 10;
}	}

if (($cdom eq '') \|\| ($cnum eq '')) {	if (($cdom eq '') \|\| ($cnum eq '')) {
if ($env{'request.course.id'}) {	if ($env{'request.course.id'}) {
$cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};	$cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
Line 5754 sub get_timebased_id {	Line 6823 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 5774 sub get_timebased_id {	Line 6848 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 5782 sub get_timebased_id {	Line 6857 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 5817 sub portfolio_access {	Line 6903 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 5826 sub get_portfolio_access {	Line 6912 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 5850 sub get_portfolio_access {	Line 6936 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 ($guest) {
Line 6040 sub usertools_access {	Line 7141 sub usertools_access {
official => 1,	official => 1,
unofficial => 1,	unofficial => 1,
community => 1,	community => 1,
	textbook => 1,
	placement => 1,
);	);
} elsif ($context eq 'requestauthor') {	} elsif ($context eq 'requestauthor') {
%tools = (	%tools = (
Line 6055 sub usertools_access {	Line 7158 sub usertools_access {
}	}
return if (!defined($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 6074 sub usertools_access {	Line 7177 sub usertools_access {

my ($toolstatus,$inststatus,$envkey);	my ($toolstatus,$inststatus,$envkey);
if ($context eq 'requestauthor') {	if ($context eq 'requestauthor') {
$envkey = $context;	$envkey = $context;
} else {	} else {
$envkey = $context.'.'.$tool;	$envkey = $context.'.'.$tool;
}	}
Line 6336 sub customaccess {	Line 7439 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 6353 sub allowed {	Line 7456 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 6401 sub allowed {	Line 7504 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 6531 sub allowed {	Line 7637 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 6547 sub allowed {	Line 7658 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 6563 sub allowed {	Line 7678 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 6606 sub allowed {	Line 7721 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 6644 sub allowed {	Line 7763 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 6756 sub allowed {	Line 7879 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 6766 sub allowed {	Line 7889 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'});	$env{'request.course.id'});
Line 6824 sub constructaccess {	Line 7947 sub constructaccess {
my ($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 6845 sub constructaccess {	Line 7968 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 6879 sub constructaccess {	Line 8011 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 6899 sub get_comm_blocks {	Line 8057 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,$2);
Line 6927 sub has_comm_blocking {	Line 8079 sub has_comm_blocking {
if (ref($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,$block);
}
}	}
}	}
}	}
Line 6948 sub has_comm_blocking {	Line 8096 sub has_comm_blocking {
my @to_test;	my @to_test;
if (ref($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",$symb);
last;	last;
}	}
}	}
Line 6981 sub has_comm_blocking {	Line 8128 sub has_comm_blocking {
}	}
}	}
}	}
if ($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 7011 sub has_comm_blocking {	Line 8168 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 7105 sub get_symb_from_alias {	Line 8295 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 7133 sub definerole {	Line 8323 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 7146 sub definerole {	Line 8344 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 7215 sub update_allusers_table {	Line 8417 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,$dom);
Line 7236 sub fetch_enrollment_query {	Line 8440 sub fetch_enrollment_query {
&logthis('fetch_enrollment_query: invalid queryid: '.$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} = $value;
Line 7264 sub fetch_enrollment_query {	Line 8468 sub fetch_enrollment_query {
if ($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 7281 sub fetch_enrollment_query {	Line 8485 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 7647 sub auto_courserequest_checks {	Line 8857 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 7676 sub auto_validate_class_sec {	Line 8889 sub auto_validate_class_sec {
return $response;	return $response;
}	}

	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 7823 sub plaintext {	Line 9166 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 7944 sub assignrole {	Line 9288 sub assignrole {
}	}
}	}
} elsif ($context eq 'requestauthor') {	} elsif ($context eq 'requestauthor') {
if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'}) &&	if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'}) &&
($url eq '/'.$udom.'/') && ($role eq 'au')) {	($url eq '/'.$udom.'/') && ($role eq 'au')) {
if ($env{'environment.requestauthor'} eq 'automatic') {	if ($env{'environment.requestauthor'} eq 'automatic') {
$refused = '';	$refused = '';
Line 7952 sub assignrole {	Line 9296 sub assignrole {
my %domdefaults = &get_domain_defaults($udom);	my %domdefaults = &get_domain_defaults($udom);
if (ref($domdefaults{'requestauthor'}) eq 'HASH') {	if (ref($domdefaults{'requestauthor'}) eq 'HASH') {
my $checkbystatus;	my $checkbystatus;
if ($env{'user.adv'}) {	if ($env{'user.adv'}) {
my $disposition = $domdefaults{'requestauthor'}{'_LC_adv'};	my $disposition = $domdefaults{'requestauthor'}{'_LC_adv'};
if ($disposition eq 'automatic') {	if ($disposition eq 'automatic') {
$refused = '';	$refused = '';
} elsif ($disposition eq '') {	} elsif ($disposition eq '') {
$checkbystatus = 1;	$checkbystatus = 1;
}	}
} else {	} else {
$checkbystatus = 1;	$checkbystatus = 1;
}	}
Line 8040 sub assignrole {	Line 9384 sub assignrole {
&courserolelog($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') \|\| ($role eq 'aa')) {
&coauthorrolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,	&coauthorrolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,
$context);	$context);
}	}
if ($role eq 'cc') {	if ($role eq 'cc') {
&autoupdate_coowners($url,$end,$start,$uname,$udom);	&autoupdate_coowners($url,$end,$start,$uname,$udom);
Line 8235 sub modifyuser {	Line 9580 sub modifyuser {
'current user id "'.$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 8345 sub modifyuser {	Line 9690 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,$inststatus,$credits)=@_;	$selfenroll,$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 8357 sub modifystudent {	Line 9702 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,	$gene,$usec,$end,$start,$type,$locktype,
$cid,$selfenroll,$context,$credits);	$cid,$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,$context,$credits) = @_;	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 8413 sub modify_student_enrollment {	Line 9759 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,$credits) },	join(':',$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 8642 sub is_course {	Line 9988 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 8667 sub store_userdata {	Line 10013 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 8775 sub save_selected_files {	Line 10124 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 8789 sub save_selected_files {	Line 10138 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().$filename);
print (OUT undef);	print (OUT undef);
close (OUT);	close (OUT);
return ("ok");	return ("ok");
Line 8799 sub files_in_path {	Line 10148 sub files_in_path {
my ($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 8821 sub files_not_in_path {	Line 10170 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 8838 sub files_not_in_path {	Line 10187 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 8934 sub modify_access_controls {	Line 10367 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 8982 sub modify_access_controls {	Line 10415 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 9229 sub dirlist {	Line 10745 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 9302 sub stat_file {	Line 10835 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 9446 sub get_userresdata {	Line 11088 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 9463 sub get_userresdata {	Line 11107 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.
	# $what - Last part of param identifier.
# @which - Array of names of resources desired.	# @which - Array of names of resources desired.
# Returns:	# Returns:
# The value of the first reasource in @which that is found in the	# The value of the first reasource in @which that is found in the
Line 9473 sub get_userresdata {	Line 11124 sub get_userresdata {
# 'user', an undefined reference is returned.	# 'user', an undefined reference is returned.
# If none of the resources are found, an undef is returned	# If none of the resources are found, an undef is returned
sub resdata {	sub resdata {
my ($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,$domain);
Line 9482 sub resdata {	Line 11134 sub resdata {
}	}
if (!ref($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 $errors) = (0,0);
	my $suppmap = 'supplemental.sequence';
	($suppcount,$errors) =
	&Apache::loncommon::recurse_supplemental($cnum,$cdom,$suppmap,$suppcount,$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 9517 sub EXT_cache_set {	Line 11249 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 $courseid;
Line 9632 sub EXT {	Line 11364 sub EXT {
if (!$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 9678 sub EXT {	Line 11434 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 9696 sub EXT {	Line 11456 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 9721 sub EXT {	Line 11484 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 9730 sub EXT {	Line 11494 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($coursereply); }
}	}
Line 9756 sub EXT {	Line 11526 sub EXT {
if (defined($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 9798 sub get_reply {	Line 11568 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 9821 sub sort_course_groups { # Sort groups b	Line 11620 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;	$do_default=1;
Line 9893 sub add_prefix_and_part {	Line 11692 sub add_prefix_and_part {
my %metaentry;	my %metaentry;
my %importedpartids;	my %importedpartids;
sub metadata {	sub metadata {
my ($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{/(smppg\|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)$/) {
return undef;	return undef;
}	}
Line 9917 sub metadata {	Line 11716 sub metadata {
my ($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 retrived via &get().
	#
	# 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) {
	$checked = 1;
	if (&EXT('resource.0.gradable',$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 %importedids=();
Line 10056 sub metadata {	Line 11906 sub metadata {

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};
Line 10131 sub metadata {	Line 11981 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 10163 sub metadata {	Line 12013 sub metadata {

$metaentry{':keys'} = join(',',keys(%metathesekeys));	$metaentry{':keys'} = join(',',keys(%metathesekeys));
&metadata_generate_part0(\%metathesekeys,\%metaentry,$uri);	&metadata_generate_part0(\%metathesekeys,\%metaentry,$uri);
$metaentry{':allpossiblekeys'}=join(',',keys %metathesekeys);	$metaentry{':allpossiblekeys'}=join(',',keys(%metathesekeys));
&do_cache_new('meta',$uri,\%metaentry,$cachetime);	&do_cache_new('meta',$uri,\%metaentry,$cachetime);
# this is the end of "was not already recently cached	# this is the end of "was not already recently cached
}	}
Line 10276 sub gettitle {	Line 12126 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 10401 sub get_course_slots {	Line 12179 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 10511 sub symbverify {	Line 12289 sub symbverify {
$ids=$bighash{'ids_'.&clutter($thisurl)};	$ids=$bighash{'ids_'.&clutter($thisurl)};
}	}
unless ($ids) {	unless ($ids) {
my $idkey = 'ids_'.($thisurl =~ m{^/}? '' : '/').$thisurl;	my $idkey = 'ids_'.($thisurl =~ m{^/}? '' : '/').$thisurl;
$ids=$bighash{$idkey};	$ids=$bighash{$idkey};
}	}
if ($ids) {	if ($ids) {
Line 10527 sub symbverify {	Line 12305 sub symbverify {
if (ref($encstate)) {	if (ref($encstate)) {
$$encstate = $bighash{'encrypted_'.$id};	$$encstate = $bighash{'encrypted_'.$id};
}	}
if (($env{'request.role.adv'}) \|\|	if (($env{'request.role.adv'}) \|\|
($bighash{'encrypted_'.$id} eq $env{'request.enc'}) \|\|	($bighash{'encrypted_'.$id} eq $env{'request.enc'}) \|\|
($thisurl eq '/adm/navmaps')) {	($thisurl eq '/adm/navmaps')) {
$okay=1;	$okay=1;
last;	last;
}	}
}	}
}	}
}	}
untie(%bighash);	untie(%bighash);
}	}
Line 10606 sub deversion {	Line 12384 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'});
}	}
$thisfn=$env{'request.filename'};	$thisfn=$env{'request.filename'};
}	}
if ($thisfn=~m\|^/enc/\|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }	if ($thisfn=~m\|^/enc/\|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
# is that filename actually a symb? Verify, clean, and return	# is that filename actually a symb? Verify, clean, and return
Line 10674 sub symbread {	Line 12454 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 10693 sub symbread {	Line 12501 sub symbread {
$syval='';	$syval='';
}	}
}	}
untie(%bighash)	untie(%bighash);
}	}
}	}
if ($syval) {	if ($syval) {
Line 10846 sub rndseed {	Line 12654 sub rndseed {
$which =&get_rand_alg($courseid);	$which =&get_rand_alg($courseid);
}	}
if (defined(&getCODE())) {	if (defined(&getCODE())) {

if ($which eq '64bit5') {	if ($which eq '64bit5') {
return &rndseed_CODE_64bit5($symb,$courseid,$domain,$username);	return &rndseed_CODE_64bit5($symb,$courseid,$domain,$username);
} elsif ($which eq '64bit4') {	} elsif ($which eq '64bit4') {
Line 11031 sub rndseed_CODE_64bit5 {	Line 12840 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 11211 sub repcopy_userfile {	Line 13024 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 11221 sub repcopy_userfile {	Line 13033 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 11265 sub getuploaded {	Line 13077 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 11284 sub readfile {	Line 13095 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 11397 sub machine_ids {	Line 13208 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 11423 sub default_login_domain {	Line 13234 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/\|\|;	$thisfn=~s\|^adm/coursedocs/showdoc/\|\|;
Line 11466 sub clutter {	Line 13279 sub clutter {
# &logthis("Got a blank emb style");	# &logthis("Got a blank emb style");
}	}
}	}
	} elsif ($thisfn =~ m{^/adm/$match_domain/$match_courseid/\d+/ext\.tool$}) {
	$thisfn='/adm/wrapper'.$thisfn;
}	}
return $thisfn;	return $thisfn;
}	}
Line 11539 sub get_dns {	Line 13354 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 11550 sub get_dns {	Line 13365 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;
}	}
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 11576 sub get_dns {	Line 13389 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 11620 sub parse_dns_checksums_tab {	Line 13434 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 11653 sub fetch_dns_checksums {	Line 13470 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 = <$fh>;
&parse_domain_tab(\@lines);	&parse_domain_tab(\@lines);
}	}
Line 11708 sub fetch_dns_checksums {	Line 13525 sub fetch_dns_checksums {
my ($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 11732 sub fetch_dns_checksums {	Line 13564 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 11740 sub fetch_dns_checksums {	Line 13573 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 11763 sub fetch_dns_checksums {	Line 13596 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 11773 sub fetch_dns_checksums {	Line 13607 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 11885 sub fetch_dns_checksums {	Line 13724 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 11909 sub fetch_dns_checksums {	Line 13748 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{$name})) {
Line 11934 sub fetch_dns_checksums {	Line 13773 sub fetch_dns_checksums {
}	}
push(@{$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 11992 sub fetch_dns_checksums {	Line 13833 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 12013 BEGIN {	Line 13887 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 12027 BEGIN {	Line 13901 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 12041 BEGIN {	Line 13915 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 12061 BEGIN {	Line 13935 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 12077 BEGIN {	Line 13951 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 12113 BEGIN {	Line 13968 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} = $release;
Line 12126 BEGIN {	Line 13989 BEGIN {
# ---------------------------------------------------------- Read managers table	# ---------------------------------------------------------- Read managers table
{	{
if (-e "$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 12162 $readit=1;	Line 14025 $readit=1;
if ($test != 0) { $_64bit=1; } else { $_64bit=0; }	if ($test != 0) { $_64bit=1; } else { $_64bit=0; }
&logthis(" Detected 64bit platform ($_64bit)");	&logthis(" Detected 64bit platform ($_64bit)");
}	}

{
eval {
($apache) =
(Apache2::ServerUtil::get_server_version() =~ m{Apache/(\d+\.\d+)});
};
if ($@) {
$apache = 1.3;
}
}

}	}
}	}

Line 12313 were new keys. I.E. 1:foo will become 1:	Line 14165 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 12397 the answer, and also caches if there is	Line 14249 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 12409 usernames (returns hash: name=>id,name=>	Line 14263 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 12450 escaped strings of the action recorded i	Line 14324 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 12475 in which case the null string is returne	Line 14365 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 12491 environment). If no custom name is defi	Line 14382 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 12508 provided for types, will default to retu	Line 14399 provided for types, will default to retu
=item *	=item *

in_course($udom,$uname,$cdom,$cnum,$type,$hideprivileged) : determine if	in_course($udom,$uname,$cdom,$cnum,$type,$hideprivileged) : determine if
user: $uname:$udom has a role in the course: $cdom_$cnum.	user: $uname:$udom has a role in the course: $cdom_$cnum.

Additional optional arguments are: $type (if role checking is to be restricted	Additional optional arguments are: $type (if role checking is to be restricted
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 12557 or when Autoupdate.pl is run by cron in	Line 14472 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 12618 Inputs:	Line 14533 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 12657 Inputs:	Line 14572 Inputs:

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

	=item $instsec, institutional course section code for student

=back	=back


Line 12713 If defined, the supplied username is use	Line 14630 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 12722 data base, returning a hash that is keye	Line 14639 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 12781 resource. Expects the local filesystem p	Line 14702 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 $varname are environment.lastname (or other item
from the envirnment hash), user.name (or someother aspect about the	from the envirnment hash), user.name (or someother aspect about the
Line 12802 condval($condidx) : value of condition i	Line 14728 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.

	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	this function automatically caches all requests

Line 12817 will be stored for query	Line 14747 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 12827 and is a possible symb for the URL in $t	Line 14770 and is a possible symb for the URL in $t
resource that the user accessed using /enc/ returns a 1 on success, 0	resource that the user accessed using /enc/ returns a 1 on success, 0
on failure, user must be in a course, as it assumes the existence of	on failure, user must be in a course, as it assumes the existence of
the course initial hash, and uses $env('request.course.id'}. The third	the course initial hash, and uses $env('request.course.id'}. The third
arg is an optional reference to a scalar. If this arg is passed in the	arg is an optional reference to a scalar. If this arg is passed in the
call to symbverify, it will be set to 1 if the symb has been set to be	call to symbverify, it will be set to 1 if the symb has been set to be
encrypted; otherwise it will be null.	encrypted; otherwise it will be null.

=item *	=item *

Line 12882 expirespread($uname,$udom,$stype,$usymb)	Line 14825 expirespread($uname,$udom,$stype,$usymb)
devalidate($symb) : devalidate temporary spreadsheet calculations,	devalidate($symb) : devalidate temporary spreadsheet calculations,
forcing spreadsheet to reevaluate the resource scores next time.	forcing spreadsheet to reevaluate the resource scores next time.

=item *	=item *

can_edit_resource($file,$cnum,$cdom,$resurl,$symb,$group) : determine if current user can edit a particular resource,	can_edit_resource($file,$cnum,$cdom,$resurl,$symb,$group) : determine if current user can edit a particular resource,
when viewing in course context.	when viewing in course context.

input: six args -- filename (decluttered), course number, course domain,	input: six args -- filename (decluttered), course number, course domain,
url, symb (if registered) and group (if this is a	url, symb (if registered) and group (if this is a
group item -- e.g., bulletin board, group page etc.).	group item -- e.g., bulletin board, group page etc.).

output: array of five scalars --	output: array of five scalars --
Line 12896 when viewing in course context.	Line 14839 when viewing in course context.
$home -- homeserver of resource (i.e., for author if published,	$home -- homeserver of resource (i.e., for author if published,
or course if uploaded.).	or course if uploaded.).
$switchserver -- 1 if server switch will be needed.	$switchserver -- 1 if server switch will be needed.
$forceedit -- 1 if icon/link should be to go to edit mode	$forceedit -- 1 if icon/link should be to go to edit mode
$forceview -- 1 if icon/link should be to go to view mode	$forceview -- 1 if icon/link should be to go to view mode

=item *	=item *

is_course_upload($file,$cnum,$cdom)	is_course_upload($file,$cnum,$cdom)

Used in course context to determine if current file was uploaded to	Used in course context to determine if current file was uploaded to
the course (i.e., would be found in /userfiles/docs on the course's	the course (i.e., would be found in /userfiles/docs on the course's
homeserver.	homeserver.

input: 3 args -- filename (decluttered), course number and course domain.	input: 3 args -- filename (decluttered), course number and course domain.
Line 12918 homeserver.	Line 14861 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 12949 $range should be either an integer '100'	Line 14898 $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 13062 server ($udom and $uhome are optional)	Line 15012 server ($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 13295 filelocation except for hrefs	Line 15321 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

Line 13490 Returns:	Line 15517 Returns:

get_timebased_id():	get_timebased_id():

Attempts to get a unique timestamp-based suffix for use with items added to a	Attempts to get a unique timestamp-based suffix for use with items added to a
course via the Course Editor (e.g., folders, composite pages,	course via the Course Editor (e.g., folders, composite pages,
group bulletin boards).	group bulletin boards).

Args: (first three required; six others optional)	Args: (first three required; six others optional)
Line 13502 Args: (first three required; six others	Line 15529 Args: (first three required; six others
2. keyid (alphanumeric): name of temporary locking key in hash,	2. keyid (alphanumeric): name of temporary locking key in hash,
e.g., num, boardids	e.g., num, boardids

3. namespace: name of gdbm file used to store suffixes already assigned;	3. namespace: name of gdbm file used to store suffixes already assigned;
file will be named nohist_namespace.db	file will be named nohist_namespace.db

4. cdom: domain of course; default is current course domain from %env	4. cdom: domain of course; default is current course domain from %env

5. cnum: course number; default is current course number from %env	5. cnum: course number; default is current course number from %env

6. idtype: set to concat if an additional digit is to be appended to the	6. idtype: set to concat if an additional digit is to be appended to the
unix timestamp to form the suffix, if the plain timestamp is already	unix timestamp to form the suffix, if the plain timestamp is already
in use. Default is to not do this, but simply increment the unix	in use. Default is to not do this, but simply increment the unix
timestamp by 1 until a unique key is obtained.	timestamp by 1 until a unique key is obtained.

7. who: holder of locking key; defaults to user:domain for user.	7. who: holder of locking key; defaults to user:domain for user.

8. locktries: number of attempts to obtain a lock (sleep of 1s before	8. locktries: number of attempts to obtain a lock (sleep of 1s before
retrying); default is 3.	retrying); default is 3.

9. maxtries: number of attempts to obtain a unique suffix; default is 20.	9. maxtries: number of attempts to obtain a unique suffix; default is 20.

Returns:	Returns:

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

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	Added in v.1.1363