loncom/lonnet/perl/lonnet.pm - diff

Return to lonnet.pm CVS log

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

Diff for /loncom/lonnet/perl/lonnet.pm between versions 1.1172.2.31 and 1.1344

version 1.1172.2.31, 2013/08/08 02:09:10	version 1.1344, 2017/05/09 03:04:32
Line 75 use LWP::UserAgent();	Line 75 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 92 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 102 use LONCAPA::Lond;	Line 105 use LONCAPA::Lond;
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 123 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);
}	}
}	}

Line 225 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) {
	$uselocal = 0;
	}
	}
	}
	if ($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 352 sub get_remote_globals {	Line 398 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 368 sub subreply {	Line 417 sub subreply {

my $lockfile=$peerfile.".lock";	my $lockfile=$peerfile.".lock";
while (-e $lockfile) { # Need to wait for the lockfile to disappear.	while (-e $lockfile) { # Need to wait for the lockfile to disappear.
sleep(1);	sleep(0.1);
}	}
# At this point, either a loncnew parent is listening or an old lonc	# At this point, either a loncnew parent is listening or an old lonc
# or loncnew child is listening so we can connect or everything's dead.	# or loncnew child is listening so we can connect or everything's dead.
Line 386 sub subreply {	Line 435 sub subreply {
} else {	} else {
&create_connection(&hostname($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 415 sub reply {	Line 464 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 441 sub reconlonc {	Line 490 sub reconlonc {
&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 462 sub critical {	Line 511 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 $now=time;
Line 479 sub critical {	Line 528 sub critical {
close($dfh);	close($dfh);
}	}
}	}
sleep 2;	sleep 1;
my $wcmd='';	my $wcmd='';
{	{
my $dfh;	my $dfh;
Line 599 sub transfer_profile_to_env {	Line 648 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,$userhashref) = @_;
my %cookies=CGI::Cookie->parse($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 631 sub check_for_valid_session {	Line 693 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 {
$r->user($disk_env{'user.name'}.':'.$disk_env{'user.domain'});
}
}	}

return $handle;	return $handle;
Line 672 sub appenv {	Line 731 sub appenv {
if (($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;	$refused = 0;
}	}
Line 845 sub spareserver {	Line 904 sub spareserver {
if (ref($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, $lowest_load);
}	}
Line 859 sub spareserver {	Line 916 sub spareserver {
if (!$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 886 sub spareserver {	Line 941 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 947 sub has_user_session {	Line 1012 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 = '';	$isredirect = '';
Line 974 sub choose_server {	Line 1056 sub choose_server {
}	}
} else {	} else {
($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 1147 sub can_host_session {	Line 1229 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 1244 sub get_lonbalancer_config {	Line 1334 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 1253 sub check_loadbalancing {	Line 1343 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 $intdom)) {
Line 1268 sub check_loadbalancing {	Line 1358 sub check_loadbalancing {
&Apache::lonnet::get_dom('configuration',['loadbalancing'],$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($currrules) eq 'HASH') {
Line 1321 sub check_loadbalancing {	Line 1413 sub check_loadbalancing {
}	}
}	}
} elsif (($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 1346 sub check_loadbalancing {	Line 1440 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 $lowest_load = 30000;
Line 1382 sub check_loadbalancing {	Line 1485 sub check_loadbalancing {
}	}
}	}
}	}
if (($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 1516 sub homeserver {	Line 1621 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 1534 sub idget {	Line 1655 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 1552 sub idrget {	Line 1673 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 IDs from ids.db file	# ------------- Delete unwanted student/employee IDs or clicker IDs from domain

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

# ------------------------------dump from db file owned by domainconfig user	# ------------------------------dump from db file owned by domainconfig user
sub dump_dom {	sub dump_dom {
my ($namespace, $udom, $regexp) = @_;	my ($namespace, $udom, $regexp) = @_;
Line 1621 sub dump_dom {	Line 1823 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 1628 sub get_dom {	Line 1831 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 1641 sub get_dom {	Line 1845 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 1685 sub put_dom {	Line 1894 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",$uhome);
	}
} else {	} else {
&logthis("put_dom failed - no homeserver and/or domain");	&logthis("put_dom failed - no homeserver and/or domain");
}	}
Line 1731 sub retrieve_inst_usertypes {	Line 1944 sub retrieve_inst_usertypes {
my %domdefs = &Apache::lonnet::get_domain_defaults($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(/:/,$rep);
Line 1754 sub retrieve_inst_usertypes {	Line 1966 sub retrieve_inst_usertypes {
push(@order,&unescape($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($1) ne '') {
return '1';	return '1';
}	}
Line 1783 sub inst_directory_query {	Line 1995 sub inst_directory_query {
&escape($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 1903 sub get_instuser {	Line 2115 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 1982 sub inst_userrules {	Line 2251 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 1995 sub get_domain_defaults {	Line 2267 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 2003 sub get_domain_defaults {	Line 2278 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 2025 sub get_domain_defaults {	Line 2303 sub get_domain_defaults {
}	}
}	}
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 2033 sub get_domain_defaults {	Line 2311 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') {
if (ref($domconfig{'coursedefaults'}{'uploadquota'}) eq 'HASH') {	$domdefaults{'postsubmit'} = $domconfig{'coursedefaults'}{'postsubmit'}{'client'};
$domdefaults{'officialquota'} = $domconfig{'coursedefaults'}{'uploadquota'}{'official'};	}
$domdefaults{'unofficialquota'} = $domconfig{'coursedefaults'}{'uploadquota'}{'unofficial'};	foreach my $type (@coursetypes) {
$domdefaults{'communityquota'} = $domconfig{'coursedefaults'}{'uploadquota'}{'community'};	if (ref($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 (ref($domconfig{'usersessions'}) eq 'HASH') {	if (ref($domconfig{'usersessions'}) eq 'HASH') {
Line 2055 sub get_domain_defaults {	Line 2356 sub get_domain_defaults {
if (ref($domconfig{'usersessions'}{'hosted'}) eq 'HASH') {	if (ref($domconfig{'usersessions'}{'hosted'}) eq 'HASH') {
$domdefaults{'hostedsessions'} = $domconfig{'usersessions'}{'hosted'};	$domdefaults{'hostedsessions'} = $domconfig{'usersessions'}{'hosted'};
}	}
	if (ref($domconfig{'usersessions'}{'offloadnow'}) eq 'HASH') {
	$domdefaults{'offloadnow'} = $domconfig{'usersessions'}{'offloadnow'};
	}
	}
	if (ref($domconfig{'selfenrollment'}) eq 'HASH') {
	if (ref($domconfig{'selfenrollment'}{'admin'}) eq 'HASH') {
	my @settings = ('types','registered','enroll_dates','access_dates','section',
	'approval','limit');
	foreach my $type (@coursetypes) {
	if (ref($domconfig{'selfenrollment'}{'admin'}{$type}) eq 'HASH') {
	my @mgrdc = ();
	foreach my $item (@settings) {
	if ($domconfig{'selfenrollment'}{'admin'}{$type}{$item} eq '0') {
	push(@mgrdc,$item);
	}
	}
	if (@mgrdc) {
	$domdefaults{$type.'selfenrolladmdc'} = join(',',@mgrdc);
	}
	}
	}
	}
	if (ref($domconfig{'selfenrollment'}{'default'}) eq 'HASH') {
	foreach my $type (@coursetypes) {
	if (ref($domconfig{'selfenrollment'}{'default'}{$type}) eq 'HASH') {
	foreach my $item (keys(%{$domconfig{'selfenrollment'}{'default'}{$type}})) {
	$domdefaults{$type.'selfenroll'.$item} = $domconfig{'selfenrollment'}{'default'}{$type}{$item};
	}
	}
	}
	}
	}
	if (ref($domconfig{'coursecategories'}) eq 'HASH') {
	$domdefaults{'catauth'} = 'std';
	$domdefaults{'catunauth'} = 'std';
	if ($domconfig{'coursecategories'}{'auth'}) {
	$domdefaults{'catauth'} = $domconfig{'coursecategories'}{'auth'};
	}
	if ($domconfig{'coursecategories'}{'unauth'}) {
	$domdefaults{'catunauth'} = $domconfig{'coursecategories'}{'unauth'};
	}
	}
	if (ref($domconfig{'ssl'}) eq 'HASH') {
	if (ref($domconfig{'ssl'}{'replication'}) eq 'HASH') {
	$domdefaults{'replication'} = $domconfig{'ssl'}{'replication'};
	}
	if (ref($domconfig{'ssl'}{'connto'}) eq 'HASH') {
	$domdefaults{'connect'} = $domconfig{'ssl'}{'connto'};
	}
	if (ref($domconfig{'ssl'}{'connfrom'}) eq 'HASH') {
	$domdefaults{'connect'} = $domconfig{'ssl'}{'connfrom'};
	}
	}
	if (ref($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,$cachetime);	&do_cache_new('domdefaults',$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 2296 sub make_key {	Line 2682 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 $id is not defined"); }
Line 2320 sub is_cached_new {	Line 2708 sub is_cached_new {
if ($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 2342 sub do_cache_new {	Line 2731 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 2646 sub ssi {	Line 3035 sub ssi {
&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 $response= $ua->request($request);
	my $content = $response->content;


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

Line 2688 sub allowuploaded {	Line 3085 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 2696 sub allowuploaded {	Line 3093 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 2790 sub can_edit_resource {	Line 3187 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 2810 sub can_edit_resource {	Line 3207 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 ($env{'form.forceedit'}) {
Line 2821 sub can_edit_resource {	Line 3226 sub can_edit_resource {
}	}
} elsif ($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 2834 sub can_edit_resource {	Line 3239 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 2843 sub can_edit_resource {	Line 3256 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 ($resurl =~ m{^/?adm/viewclasslist$}) {	} elsif ($resurl =~ m{^/?adm/viewclasslist$}) {
if ($env{'form.forceedit'}) {	if ($env{'form.forceedit'}) {
Line 2868 sub can_edit_resource {	Line 3286 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$/,@ids)) {
Line 2895 sub in_course {	Line 3313 sub in_course {
if ($hideprivileged) {	if ($hideprivileged) {
my $skipuser;	my $skipuser;
my %coursehash = &coursedescription($cdom.'_'.$cnum);	my %coursehash = &coursedescription($cdom.'_'.$cnum);
my @possdoms = ($cdom);	my @possdoms = ($cdom);
if ($coursehash{'checkforpriv'}) {	if ($coursehash{'checkforpriv'}) {
push(@possdoms,split(/,/,$coursehash{'checkforpriv'}));	push(@possdoms,split(/,/,$coursehash{'checkforpriv'}));
}	}
if (&privileged($uname,$udom,\@possdoms)) {	if (&privileged($uname,$udom,\@possdoms)) {
$skipuser = 1;	$skipuser = 1;
Line 3401 sub extract_embedded_items {	Line 3819 sub extract_embedded_items {
}	}
if (lc($tagname) eq 'a') {	if (lc($tagname) eq 'a') {
unless (($attr->{'href'} =~ /^#/) \|\| ($attr->{'href'} eq '')) {	unless (($attr->{'href'} =~ /^#/) \|\| ($attr->{'href'} eq '')) {
&add_filetype($allfiles,$attr->{'href'},'href');	&add_filetype($allfiles,$attr->{'href'},'href');
}	}
}	}
if (lc($tagname) eq 'script') {	if (lc($tagname) eq 'script') {
Line 3490 sub extract_embedded_items {	Line 3908 sub extract_embedded_items {
}	}
}	}
}	}
	if (lc($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 3708 sub flushcourselogs {	Line 4144 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 3723 sub flushcourselogs {	Line 4159 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 '.$tryserver);
}	}
}	}
Line 3846 sub userrolelog {	Line 4291 sub userrolelog {
{$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 4054 sub get_my_roles {	Line 4499 sub get_my_roles {
} else {	} else {
my $possdoms = [$domain];	my $possdoms = [$domain];
if (ref($roledoms) eq 'ARRAY') {	if (ref($roledoms) eq 'ARRAY') {
push(@{$possdoms},@{$roledoms});	push(@{$possdoms},@{$roledoms});
}	}
if (&privileged($username,$domain,$possdoms,\@privroles)) {	if (&privileged($username,$domain,$possdoms,\@privroles)) {
if (!$nothide{$username.':'.$domain}) {	if (!$nothide{$username.':'.$domain}) {
Line 4073 sub get_my_roles {	Line 4518 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 4148 sub courseiddump {	Line 4782 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) { $domfilter=''; }
Line 4161 sub courseiddump {	Line 4796 sub courseiddump {
if (($domfilter eq '') \|\|	if (($domfilter eq '') \|\|
(&host_domain($tryserver) eq $domfilter)) {	(&host_domain($tryserver) eq $domfilter)) {
my $rep;	my $rep;
if (grep { $_ eq $tryserver } &current_machine_ids()) {	if (grep { $_ eq $tryserver } current_machine_ids()) {
$rep = &LONCAPA::Lond::dump_course_id_handler(	$rep = LONCAPA::Lond::dump_course_id_handler(
join(":", (&host_domain($tryserver), $sincefilter,	join(":", (&host_domain($tryserver), $sincefilter,
&escape($descfilter), &escape($instcodefilter),	&escape($descfilter), &escape($instcodefilter),
&escape($ownerfilter), &escape($coursefilter),	&escape($ownerfilter), &escape($coursefilter),
&escape($typefilter), &escape($regexp_ok),	&escape($typefilter), &escape($regexp_ok),
$as_hash, &escape($selfenrollonly),	$as_hash, &escape($selfenrollonly),
&escape($catfilter), $showhidden, $caller,	&escape($catfilter), $showhidden, $caller,
&escape($cloner), &escape($cc_clone), $cloneonly,	&escape($cloner), &escape($cc_clone), $cloneonly,
&escape($createdbefore), &escape($createdafter),	&escape($createdbefore), &escape($createdafter),
&escape($creationcontext), $domcloner)));	&escape($creationcontext),$domcloner,$hasuniquecode,
	$reqcrsdom,&escape($reqinstcode))));
} else {	} else {
$rep = &reply('courseiddump:'.&host_domain($tryserver).':'.	$rep = &reply('courseiddump:'.&host_domain($tryserver).':'.
$sincefilter.':'.&escape($descfilter).':'.	$sincefilter.':'.&escape($descfilter).':'.
Line 4182 sub courseiddump {	Line 4818 sub courseiddump {
$showhidden.':'.$caller.':'.&escape($cloner).':'.	$showhidden.':'.$caller.':'.&escape($cloner).':'.
&escape($cc_clone).':'.$cloneonly.':'.	&escape($cc_clone).':'.$cloneonly.':'.
&escape($createdbefore).':'.&escape($createdafter).':'.	&escape($createdbefore).':'.&escape($createdafter).':'.
&escape($creationcontext).':'.$domcloner,	&escape($creationcontext).':'.$domcloner.':'.$hasuniquecode.
$tryserver);	':'.$reqcrsdom.':'.&escape($reqinstcode),$tryserver);
}	}

my @pairs=split(/\&/,$rep);	my @pairs=split(/\&/,$rep);
foreach my $item (@pairs) {	foreach my $item (@pairs) {
my ($key,$value)=split(/\=/,$item,2);	my ($key,$value)=split(/\=/,$item,2);
Line 4311 sub get_domain_roles {	Line 4947 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 4322 my $cachedkey='';	Line 4973 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 4336 sub load_all_first_access {	Line 4988 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 4348 sub get_first_access {	Line 5000 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 4384 sub set_first_access {	Line 5036 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 4754 sub tmprestore {	Line 5407 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 4784 sub store {	Line 5437 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 4821 sub cstore {	Line 5474 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 4977 sub privileged {	Line 5630 sub privileged {
my $now = time;	my $now = time;
my $roles;	my $roles;
if (ref($possroles) eq 'ARRAY') {	if (ref($possroles) eq 'ARRAY') {
$roles = $possroles;	$roles = $possroles;
} else {	} else {
$roles = ['dc','su'];	$roles = ['dc','su'];
}	}
Line 5001 sub privileged {	Line 5654 sub privileged {
my %rolesdump = &dump("roles", $domain, $username) or return 0;	my %rolesdump = &dump("roles", $domain, $username) or return 0;
my $now = time;	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(/_/, $role);
if (grep(/^\Q$trole\E$/,@{$roles})) {	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 > $now);
}	}
}	}
Line 5042 sub privileged_by_domain {	Line 5695 sub privileged_by_domain {
my ($trole,$uname,$udom,$rest) = split(/:/,$item,4);	my ($trole,$uname,$udom,$rest) = split(/:/,$item,4);
my ($end,$start) = split(/:/,$dompersonnel{$server}{$item});	my ($end,$start) = split(/:/,$dompersonnel{$server}{$item});
next if ($end && $end < $now);	next if ($end && $end < $now);
$privileged{$dom}{$trole}{$uname.':'.$udom} =	$privileged{$dom}{$trole}{$uname.':'.$udom} =
$dompersonnel{$server}{$item};	$dompersonnel{$server}{$item};
}	}
}	}
Line 5090 sub rolesinit {	Line 5743 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 5163 sub rolesinit {	Line 5816 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 5182 sub set_arearole {	Line 5836 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 5201 sub custom_roleprivs {	Line 5855 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 5209 sub custom_roleprivs {	Line 5867 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 $access = 1;
Line 5243 sub set_userprivs {	Line 5943 sub set_userprivs {
my ($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 5290 sub set_userprivs {	Line 5991 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 5298 sub set_userprivs {	Line 6000 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 5343 sub role_status {	Line 6045 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 5421 sub delete_env_groupprivs {	Line 6124 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 5513 sub unserialize {	Line 6233 sub unserialize {
return {} if $rep =~ /^error/;	return {} if $rep =~ /^error/;

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

# see Lond::dump_with_regexp	# see Lond::dump_with_regexp
# if $escapedkeys hash keys won't get unescaped.	# if $escapedkeys hash keys won't get unescaped.
Line 5530 sub dump {	Line 6251 sub dump {
if (!$uname) { $uname=$env{'user.name'}; }	if (!$uname) { $uname=$env{'user.name'}; }
my $uhome=&homeserver($uname,$udomain);	my $uhome=&homeserver($uname,$udomain);

my $reply;
if (grep { $_ eq $uhome } &current_machine_ids()) {
# user is hosted on this machine
$reply = LONCAPA::Lond::dump_with_regexp(join(':', ($udomain,
$uname, $namespace, $regexp, $range)), $perlvar{'lonVersion'});
return %{&unserialize($reply, $escapedkeys)};
}
if ($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(/\&/,$rep);
Line 5548 sub dump {	Line 6268 sub dump {
if (!($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) unless ($escapedkeys);	$key = unescape($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 5589 sub currentdump {	Line 6310 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 5710 sub newput {	Line 6439 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 5724 sub putstore {	Line 6453 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 5817 sub tmpget {	Line 6557 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($value);
}	}
return %returnhash;	return %returnhash;
Line 5832 sub tmpdel {	Line 6574 sub tmpdel {
return &reply("tmpdel:$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 5852 sub get_timebased_id {	Line 6594 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 5882 sub get_timebased_id {	Line 6624 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 5902 sub get_timebased_id {	Line 6649 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 5910 sub get_timebased_id {	Line 6658 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 5945 sub portfolio_access {	Line 6704 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 5954 sub get_portfolio_access {	Line 6713 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 5978 sub get_portfolio_access {	Line 6737 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 ($guest) {
Line 6168 sub usertools_access {	Line 6942 sub usertools_access {
official => 1,	official => 1,
unofficial => 1,	unofficial => 1,
community => 1,	community => 1,
	textbook => 1,
	placement => 1,
);	);
} elsif ($context eq 'requestauthor') {	} elsif ($context eq 'requestauthor') {
%tools = (	%tools = (
Line 6183 sub usertools_access {	Line 6959 sub usertools_access {
}	}
return if (!defined($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 6202 sub usertools_access {	Line 6978 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 6464 sub customaccess {	Line 7240 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 6481 sub allowed {	Line 7257 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 6659 sub allowed {	Line 7435 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 6675 sub allowed {	Line 7456 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 6691 sub allowed {	Line 7476 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 6734 sub allowed {	Line 7519 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 6772 sub allowed {	Line 7561 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 6884 sub allowed {	Line 7677 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 6894 sub allowed {	Line 7687 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'});	$env{'request.course.id'});
Line 6952 sub constructaccess {	Line 7745 sub constructaccess {
my ($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 6973 sub constructaccess {	Line 7766 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 7007 sub constructaccess {	Line 7809 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 7027 sub get_comm_blocks {	Line 7855 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,$2);
Line 7055 sub has_comm_blocking {	Line 7877 sub has_comm_blocking {
if (ref($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,$block);
}
}	}
}	}
}	}
Line 7076 sub has_comm_blocking {	Line 7894 sub has_comm_blocking {
my @to_test;	my @to_test;
if (ref($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",$symb);
last;	last;
}	}
}	}
Line 7109 sub has_comm_blocking {	Line 7926 sub has_comm_blocking {
}	}
}	}
}	}
if ($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 7139 sub has_comm_blocking {	Line 7966 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 7233 sub get_symb_from_alias {	Line 8093 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 7261 sub definerole {	Line 8121 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 7274 sub definerole {	Line 8142 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 7343 sub update_allusers_table {	Line 8215 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,$dom);
Line 7364 sub fetch_enrollment_query {	Line 8238 sub fetch_enrollment_query {
&logthis('fetch_enrollment_query: invalid queryid: '.$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 7409 sub fetch_enrollment_query {	Line 8283 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>);
Line 7775 sub auto_courserequest_checks {	Line 8655 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 7804 sub auto_validate_class_sec {	Line 8687 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 7951 sub plaintext {	Line 8964 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 8072 sub assignrole {	Line 9086 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 = '';	$refused = '';
Line 8080 sub assignrole {	Line 9094 sub assignrole {
my %domdefaults = &get_domain_defaults($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;	$checkbystatus = 1;
}	}
Line 8168 sub assignrole {	Line 9182 sub assignrole {
&courserolelog($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,$udom);
Line 8363 sub modifyuser {	Line 9378 sub modifyuser {
'current user id "'.$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 8473 sub modifyuser {	Line 9488 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 8488 sub modifystudent {	Line 9503 sub modifystudent {
# student's 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,$type,	my ($udom,$uname,$uid,$first,$middle,$last,$gene,$usec,$end,$start,$type,
$locktype,$cid,$selfenroll,$context,$credits) = @_;	$locktype,$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 8542 sub modify_student_enrollment {	Line 9557 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 8970 sub files_not_in_path {	Line 9985 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 9066 sub modify_access_controls {	Line 10165 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 9114 sub modify_access_controls {	Line 10213 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 9361 sub dirlist {	Line 10543 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 9434 sub stat_file {	Line 10633 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 9578 sub get_userresdata {	Line 10886 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 9595 sub get_userresdata {	Line 10905 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.
	# $what - Last part of param identifier.
# @which - Array of names of resources desired.	# @which - Array of names of resources desired.
# Returns:	# Returns:
# The value of the first reasource in @which that is found in the	# The value of the first reasource in @which that is found in the
Line 9605 sub get_userresdata {	Line 10922 sub get_userresdata {
# 'user', an undefined reference is returned.	# 'user', an undefined reference is returned.
# If none of the resources are found, an undef is returned	# If none of the resources are found, an undef is returned
sub resdata {	sub resdata {
my ($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,$domain);
Line 9614 sub resdata {	Line 10932 sub resdata {
}	}
if (!ref($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_ltitools {
	my ($cdom) = @_;
	my %ltitools;
	my ($result,$cached)=&is_cached_new('ltitools',$cdom);
	if (defined($cached)) {
	if (ref($result) eq 'HASH') {
	%ltitools = %{$result};
	}
	} else {
	my %domconfig = &get_dom('configuration',['ltitools'],$cdom);
	if (ref($domconfig{'ltitools'}) eq 'HASH') {
	%ltitools = %{$domconfig{'ltitools'}};
	my %encdomconfig = &get_dom('encconfig',['ltitools'],$cdom);
	if (ref($encdomconfig{'ltitools'}) eq 'HASH') {
	foreach my $id (keys(%ltitools)) {
	if (ref($encdomconfig{'ltitools'}{$id}) eq 'HASH') {
	foreach my $item ('key','secret') {
	$ltitools{$id}{$item} = $encdomconfig{'ltitools'}{$id}{$item};
	}
	}
	}
	}
	}
	my $cachetime = 246060;
	&do_cache_new('ltitools',$cdom,\%ltitools,$cachetime);
	}
	return %ltitools;
	}

sub get_numsuppfiles {	sub get_numsuppfiles {
my ($cnum,$cdom,$ignorecache)=@_;	my ($cnum,$cdom,$ignorecache)=@_;
my $hashid=$cnum.':'.$cdom;	my $hashid=$cnum.':'.$cdom;
Line 9633 sub get_numsuppfiles {	Line 10994 sub get_numsuppfiles {
unless ($chome eq 'no_host') {	unless ($chome eq 'no_host') {
($suppcount,my $errors) = (0,0);	($suppcount,my $errors) = (0,0);
my $suppmap = 'supplemental.sequence';	my $suppmap = 'supplemental.sequence';
($suppcount,$errors) =	($suppcount,$errors) =
&Apache::loncommon::recurse_supplemental($cnum,$cdom,$suppmap,$suppcount,$errors);	&Apache::loncommon::recurse_supplemental($cnum,$cdom,$suppmap,$suppcount,$errors);
}	}
&do_cache_new('suppcount',$hashid,$suppcount,600);	&do_cache_new('suppcount',$hashid,$suppcount,600);
Line 9645 sub get_numsuppfiles {	Line 11006 sub get_numsuppfiles {
# 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 9822 sub EXT {	Line 11193 sub EXT {
}	}
}	}

my ($section, $group, @groups);	my ($section, $group, @groups, @recurseup, $recursed);
my ($courselevelm,$courselevel);	my ($courselevelm,$courseleveli,$courselevel,$mapp);
if (($courseid eq '') && ($cid)) {	if (($courseid eq '') && ($cid)) {
$courseid = $cid;	$courseid = $cid;
}	}
if (($symbparm && $courseid) &&	if (($symbparm && $courseid) &&
(($courseid eq $env{'request.course.id'}) \|\| ($courseid eq $cid))) {	(($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 9855 sub EXT {	Line 11225 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 9873 sub EXT {	Line 11247 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 9898 sub EXT {	Line 11275 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 9907 sub EXT {	Line 11285 sub EXT {
} else {	} else {
$filename=$env{'request.filename'};	$filename=$env{'request.filename'};
}	}
my $metadata=&metadata($filename,$spacequalifierrest);	my $metadata=&metadata($filename,$what);
if (defined($metadata)) { return &get_reply([$metadata,'resource']); }	if (defined($metadata)) { return &get_reply([$metadata,'resource']); }
$metadata=&metadata($filename,'parameter_'.$spacequalifierrest);	$metadata=&metadata($filename,'parameter_'.$what);
if (defined($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 9975 sub get_reply {	Line 11355 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 10075 sub metadata {	Line 11484 sub metadata {
# 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 10340 sub metadata {	Line 11749 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 10616 sub symbverify {	Line 12025 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 ($ids) {
Line 10632 sub symbverify {	Line 12041 sub symbverify {
if (ref($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 10711 sub deversion {	Line 12120 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 10779 sub symbread {	Line 12190 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 10798 sub symbread {	Line 12237 sub symbread {
$syval='';	$syval='';
}	}
}	}
untie(%bighash)	untie(%bighash);
}	}
}	}
if ($syval) {	if ($syval) {
Line 10951 sub rndseed {	Line 12390 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 11136 sub rndseed_CODE_64bit5 {	Line 12576 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 11528 sub default_login_domain {	Line 12972 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/\|\|;	$thisfn=~s\|^adm/coursedocs/showdoc/\|\|;
Line 11571 sub clutter {	Line 13017 sub clutter {
# &logthis("Got a blank emb style");	# &logthis("Got a blank emb style");
}	}
}	}
	} elsif ($thisfn =~ m{^/adm/$match_domain/$match_courseid/\d+/ext\.tool$}) {
	$thisfn='/adm/wrapper'.$thisfn;
}	}
return $thisfn;	return $thisfn;
}	}
Line 11655 sub get_dns {	Line 13103 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;	my $ua=new LWP::UserAgent;
$ua->timeout(30);	$ua->timeout(30);
my $request=new HTTP::Request('GET',"$alldns{$dns}://$dns$url");	my $request=new HTTP::Request('GET',"$alldns{$dns}://$dns$url");
Line 11663 sub get_dns {	Line 13111 sub get_dns {
delete($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 ($nocache) {
&do_cache_new('dns',$url,\@content,302460*60);	&do_cache_new('dns',$url,\@content,302460*60);
}	}
&$func(\@content,$hashref);	&$func(\@content,$hashref);
return;	return;
}	}
Line 11681 sub get_dns {	Line 13129 sub get_dns {
# ------------------------------------------------------Get DNS checksums file	# ------------------------------------------------------Get DNS checksums file
sub parse_dns_checksums_tab {	sub parse_dns_checksums_tab {
my ($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 11725 sub parse_dns_checksums_tab {	Line 13174 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 11758 sub fetch_dns_checksums {	Line 13210 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>;
Line 11837 sub fetch_dns_checksums {	Line 13289 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 11845 sub fetch_dns_checksums {	Line 13298 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);
Line 11868 sub fetch_dns_checksums {	Line 13321 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 11878 sub fetch_dns_checksums {	Line 13332 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 11990 sub fetch_dns_checksums {	Line 13449 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 12014 sub fetch_dns_checksums {	Line 13473 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{$name})) {
Line 12039 sub fetch_dns_checksums {	Line 13498 sub fetch_dns_checksums {
}	}
push(@{$iphost{$ip}},@{$name_to_host{$name}});	push(@{$iphost{$ip}},@{$name_to_host{$name}});
}	}
&do_cache_new('iphost','iphost',	unless ($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 12103 sub fetch_dns_checksums {	Line 13564 sub fetch_dns_checksums {
}	}

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	# ---------------------------------------------------------- Read loncaparev table
{	{
sub load_loncaparevs {	sub load_loncaparevs {
if (-e "$perlvar{'lonTabDir'}/loncaparevs.tab") {	if (-e "$perlvar{'lonTabDir'}/loncaparevs.tab") {
if (open(my $config,"<$perlvar{'lonTabDir'}/loncaparevs.tab")) {	if (open(my $config,"<$perlvar{'lonTabDir'}/loncaparevs.tab")) {
while (my $configline=<$config>) {	while (my $configline=<$config>) {
Line 12122 sub all_loncaparevs {	Line 13583 sub all_loncaparevs {
}	}
}	}

# ----------------------------------------------------- Read serverhostID table	# ---------------------------------------------------------- Read serverhostID table
{	{
sub load_serverhomeIDs {	sub load_serverhomeIDs {
if (-e "$perlvar{'lonTabDir'}/serverhomeIDs.tab") {	if (-e "$perlvar{'lonTabDir'}/serverhomeIDs.tab") {
Line 12214 BEGIN {	Line 13675 BEGIN {
close($config);	close($config);
}	}

# --------------------------------------------------------- Read loncaparev table	# ---------------------------------------------------------- Read loncaparev table

&load_loncaparevs();	&load_loncaparevs();

# ------------------------------------------------------- Read serverhostID table	# ---------------------------------------------------------- Read serverhostID table

&load_serverhomeIDs();	&load_serverhomeIDs();

Line 12232 BEGIN {	Line 13693 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 12281 $readit=1;	Line 13750 $readit=1;
if ($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 12433 were new keys. I.E. 1:foo will become 1:	Line 13891 were new keys. I.E. 1:foo will become 1:
Calling convention:	Calling convention:

my %record=&Apache::lonnet::restore($symb,$courseid,$domain,$uname);	my %record=&Apache::lonnet::restore($symb,$courseid,$domain,$uname);
&Apache::lonnet::cstore(\%newrecord,$symb,$courseid,$domain,$uname);	&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 12516 the answer, and also caches if there is	Line 13974 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 12528 usernames (returns hash: name=>id,name=>	Line 13988 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 12569 escaped strings of the action recorded i	Line 14049 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 12594 in which case the null string is returne	Line 14090 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 12627 provided for types, will default to retu	Line 14124 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
Line 12800 Inputs:	Line 14297 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 12866 values that are the resource value. I b	Line 14365 values that are the resource value. I b
versions are also returned.	versions are also returned.

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

=back	=back
Line 12969 will be stored for query	Line 14468 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 12979 and is a possible symb for the URL in $t	Line 14491 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 13034 expirespread($uname,$udom,$stype,$usymb)	Line 14546 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 13048 when viewing in course context.	Line 14560 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 13070 homeserver.	Line 14582 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 13101 $range should be either an integer '100'	Line 14619 $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 13214 server ($udom and $uhome are optional)	Line 14733 server ($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 13447 filelocation except for hrefs	Line 15042 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 13642 Returns:	Line 15238 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 13654 Args: (first three required; six others	Line 15250 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>

Removed from v.1.1172.2.31
changed lines
	Added in v.1.1344