loncom/lonnet/perl/lonnet.pm - diff

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Diff for /loncom/lonnet/perl/lonnet.pm between versions 1.1172.2.52 and 1.1316

version 1.1172.2.52, 2014/06/25 18:44:10	version 1.1316, 2016/08/01 18:05:22
Line 75 use LWP::UserAgent();	Line 75 use LWP::UserAgent();
use HTTP::Date;	use HTTP::Date;
use Image::Magick;	use Image::Magick;


	use Encode;

use vars qw(%perlvar %spareid %pr %prp $memcache %packagetab $tmpdir	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 ($distro =~ /^(?:centos\|redhat\|scientific)(\d+)$/) {
	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 356 sub remote_devalidate_cache {	Line 400 sub remote_devalidate_cache {
my $items;	my $items;
return unless (ref($cachekeys) eq 'ARRAY');	return unless (ref($cachekeys) eq 'ARRAY');
my $cachestr = join('&',@{$cachekeys});	my $cachestr = join('&',@{$cachekeys});
return &reply('devalidatecache:'.&escape($cachestr),$lonhost);	my $response = &reply('devalidatecache:'.&escape($cachestr),$lonhost);
	return $response;
}	}

# -------------------------------------------------- Non-critical communication	# -------------------------------------------------- Non-critical communication
Line 370 sub subreply {	Line 415 sub subreply {

my $lockfile=$peerfile.".lock";	my $lockfile=$peerfile.".lock";
while (-e $lockfile) { # Need to wait for the lockfile to disappear.	while (-e $lockfile) { # Need to wait for the lockfile to disappear.
sleep(1);	sleep(0.1);
}	}
# At this point, either a loncnew parent is listening or an old lonc	# At this point, either a loncnew parent is listening or an old lonc
# or loncnew child is listening so we can connect or everything's dead.	# or loncnew child is listening so we can connect or everything's dead.
Line 388 sub subreply {	Line 433 sub subreply {
} else {	} else {
&create_connection(&hostname($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 417 sub reply {	Line 462 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 443 sub reconlonc {	Line 488 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 464 sub critical {	Line 509 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 $now=time;
Line 481 sub critical {	Line 526 sub critical {
close($dfh);	close($dfh);
}	}
}	}
sleep 2;	sleep 1;
my $wcmd='';	my $wcmd='';
{	{
my $dfh;	my $dfh;
Line 844 sub spareserver {	Line 889 sub spareserver {
if (ref($spareshash) eq 'HASH') {	if (ref($spareshash) eq 'HASH') {
if (ref($spareshash->{'primary'}) eq 'ARRAY') {	if (ref($spareshash->{'primary'}) eq 'ARRAY') {
foreach my $try_server (@{ $spareshash->{'primary'} }) {	foreach my $try_server (@{ $spareshash->{'primary'} }) {
if ($uint_dom) {	next unless (&spare_can_host($udom,$uint_dom,$remotesessions,
next unless (&spare_can_host($udom,$uint_dom,$remotesessions,	$try_server));
$try_server));
}
($spare_server, $lowest_load) =	($spare_server, $lowest_load) =
&compare_server_load($try_server, $spare_server, $lowest_load);	&compare_server_load($try_server, $spare_server, $lowest_load);
}	}
Line 858 sub spareserver {	Line 901 sub spareserver {
if (!$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 974 sub choose_server {	Line 1015 sub choose_server {
}	}
}	}
foreach my $lonhost (keys(%servers)) {	foreach my $lonhost (keys(%servers)) {
my $loginvia;
if ($skiploadbal) {	if ($skiploadbal) {
if (ref($balancers) eq 'HASH') {	if (ref($balancers) eq 'HASH') {
next if (exists($balancers->{$lonhost}));	next if (exists($balancers->{$lonhost}));
}	}
}	}
	my $loginvia;
if ($checkloginvia) {	if ($checkloginvia) {
$loginvia = $domconfhash{$udom.'.login.loginvia_'.$lonhost};	$loginvia = $domconfhash{$udom.'.login.loginvia_'.$lonhost};
if ($loginvia) {	if ($loginvia) {
Line 1173 sub can_host_session {	Line 1214 sub can_host_session {
sub spare_can_host {	sub spare_can_host {
my ($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 1279 sub check_loadbalancing {	Line 1328 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 $intdom)) {
Line 1294 sub check_loadbalancing {	Line 1343 sub check_loadbalancing {
&Apache::lonnet::get_dom('configuration',['loadbalancing'],$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($currrules) eq 'HASH') {
Line 1352 sub check_loadbalancing {	Line 1403 sub check_loadbalancing {
my %domconfig =	my %domconfig =
&Apache::lonnet::get_dom('configuration',['loadbalancing'],$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 1372 sub check_loadbalancing {	Line 1425 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 1412 sub check_loadbalancing {	Line 1474 sub check_loadbalancing {
$is_balancer = 0;	$is_balancer = 0;
if ($uname ne '' && $udom ne '') {	if ($uname ne '' && $udom ne '') {
if (($env{'user.name'} eq $uname) && ($env{'user.domain'} eq $udom)) {	if (($env{'user.name'} eq $uname) && ($env{'user.domain'} eq $udom)) {

&appenv({'user.loadbalexempt' => $lonhost,	&appenv({'user.loadbalexempt' => $lonhost,
'user.loadbalcheck.time' => time});	'user.loadbalcheck.time' => time});
}	}
}	}
Line 1542 sub homeserver {	Line 1604 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 1560 sub idget {	Line 1638 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 1578 sub idrget {	Line 1656 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 1647 sub dump_dom {	Line 1806 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 1654 sub get_dom {	Line 1814 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 1787 sub retrieve_inst_usertypes {	Line 1948 sub retrieve_inst_usertypes {

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($1) ne '') {
return '1';	return '1';
}	}
Line 1928 sub get_instuser {	Line 2089 sub get_instuser {
return ($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 2024 sub get_domain_defaults {	Line 2242 sub get_domain_defaults {
'requestcourses','inststatus',	'requestcourses','inststatus',
'coursedefaults','usersessions',	'coursedefaults','usersessions',
'requestauthor','selfenrollment',	'requestauthor','selfenrollment',
'coursecategories'],$domain);	'coursecategories','ssl','autoenroll'],$domain);
my @coursetypes = ('official','unofficial','community','textbook');	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'} = $domconfig{'defaults'}{'auth_def'};
Line 2055 sub get_domain_defaults {	Line 2273 sub get_domain_defaults {
}	}
}	}
if (ref($domconfig{'requestcourses'}) eq 'HASH') {	if (ref($domconfig{'requestcourses'}) eq 'HASH') {
foreach my $item ('official','unofficial','community','textbook') {	foreach my $item ('official','unofficial','community','textbook','placement') {
$domdefaults{$item} = $domconfig{'requestcourses'}{$item};	$domdefaults{$item} = $domconfig{'requestcourses'}{$item};
}	}
}	}
Line 2068 sub get_domain_defaults {	Line 2286 sub get_domain_defaults {
}	}
}	}
if (ref($domconfig{'coursedefaults'}) eq 'HASH') {	if (ref($domconfig{'coursedefaults'}) eq 'HASH') {
	$domdefaults{'canuse_pdfforms'} = $domconfig{'coursedefaults'}{'canuse_pdfforms'};
	$domdefaults{'usejsme'} = $domconfig{'coursedefaults'}{'usejsme'};
	$domdefaults{'uselcmath'} = $domconfig{'coursedefaults'}{'uselcmath'};
	if (ref($domconfig{'coursedefaults'}{'postsubmit'}) eq 'HASH') {
	$domdefaults{'postsubmit'} = $domconfig{'coursedefaults'}{'postsubmit'}{'client'};
	}
foreach my $type (@coursetypes) {	foreach my $type (@coursetypes) {
if (ref($domconfig{'coursedefaults'}{'coursecredits'}) eq 'HASH') {	if (ref($domconfig{'coursedefaults'}{'coursecredits'}) eq 'HASH') {
unless ($type eq 'community') {	unless ($type eq 'community') {
Line 2077 sub get_domain_defaults {	Line 2301 sub get_domain_defaults {
if (ref($domconfig{'coursedefaults'}{'uploadquota'}) eq 'HASH') {	if (ref($domconfig{'coursedefaults'}{'uploadquota'}) eq 'HASH') {
$domdefaults{$type.'quota'} = $domconfig{'coursedefaults'}{'uploadquota'}{$type};	$domdefaults{$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 2086 sub get_domain_defaults {	Line 2326 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($domconfig{'selfenrollment'}) eq 'HASH') {
if (ref($domconfig{'selfenrollment'}{'admin'}) eq 'HASH') {	if (ref($domconfig{'selfenrollment'}{'admin'}) eq 'HASH') {
Line 2118 sub get_domain_defaults {	Line 2361 sub get_domain_defaults {
if (ref($domconfig{'coursecategories'}) eq 'HASH') {	if (ref($domconfig{'coursecategories'}) eq 'HASH') {
$domdefaults{'catauth'} = 'std';	$domdefaults{'catauth'} = 'std';
$domdefaults{'catunauth'} = 'std';	$domdefaults{'catunauth'} = 'std';
if ($domconfig{'coursecategories'}{'auth'}) {	if ($domconfig{'coursecategories'}{'auth'}) {
$domdefaults{'catauth'} = $domconfig{'coursecategories'}{'auth'};	$domdefaults{'catauth'} = $domconfig{'coursecategories'}{'auth'};
}	}
if ($domconfig{'coursecategories'}{'unauth'}) {	if ($domconfig{'coursecategories'}{'unauth'}) {
$domdefaults{'catunauth'} = $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'}{'connect'}) eq 'HASH') {
	$domdefaults{'connect'} = $domconfig{'ssl'}{'connect'};
	}
	}
	if (ref($domconfig{'autoenroll'}) eq 'HASH') {
	$domdefaults{'autofailsafe'} = $domconfig{'autoenroll'}{'autofailsafe'};
	}
&do_cache_new('domdefaults',$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 2715 sub ssi {	Line 2985 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 2757 sub allowuploaded {	Line 3035 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 2765 sub allowuploaded {	Line 3043 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 2859 sub can_edit_resource {	Line 3137 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 2879 sub can_edit_resource {	Line 3157 sub can_edit_resource {
$forceedit = 1;	$forceedit = 1;
}	}
$cfile = $resurl;	$cfile = $resurl;
	} elsif ($resurl =~ m{^/adm/wrapper/adm/$cdom/$cnum/\d+/exttools?$}) {
	$incourse = 1;
	if ($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 ($env{'form.forceedit'}) {
Line 2890 sub can_edit_resource {	Line 3176 sub can_edit_resource {
}	}
} elsif ($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 2903 sub can_edit_resource {	Line 3189 sub can_edit_resource {
$forceedit = 1;	$forceedit = 1;
}	}
$cfile = $resurl;	$cfile = $resurl;
	} elsif (($resurl =~ m{^/adm/wrapper/adm/$cdom/$cnum/\d+/exttools?$}) && ($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 2912 sub can_edit_resource {	Line 3206 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/$cnum/\d+/exttools?$}) {
	$cfile = '/adm/wrapper'.$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 2937 sub can_edit_resource {	Line 3236 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$/,@ids)) {
Line 2964 sub in_course {	Line 3263 sub in_course {
if ($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;	$skipuser = 1;
Line 3470 sub extract_embedded_items {	Line 3769 sub extract_embedded_items {
}	}
if (lc($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 4141 sub get_my_roles {	Line 4440 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 4236 sub courseiddump {	Line 4535 sub courseiddump {
$coursefilter,$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)=@_;	$hasuniquecode,$reqcrsdom,$reqinstcode)=@_;
my $as_hash = 1;	my $as_hash = 1;
my %returnhash;	my %returnhash;
if (!$domfilter) { $domfilter=''; }	if (!$domfilter) { $domfilter=''; }
Line 4249 sub courseiddump {	Line 4548 sub courseiddump {
if (($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, $hasuniquecode)));	&escape($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 4270 sub courseiddump {	Line 4570 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).':'.$domcloner.':'.$hasuniquecode,	&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 4410 my $cachedkey='';	Line 4710 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 4424 sub load_all_first_access {	Line 4725 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 4436 sub get_first_access {	Line 4737 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 4473 sub set_first_access {	Line 4774 sub set_first_access {
}	}
}	}

sub checkout {
my ($symb,$tuname,$tudom,$tcrsid)=@_;
my $now=time;
my $lonhost=$perlvar{'lonHostID'};
my $infostr=&escape(
'CHECKOUTTOKEN&'.
$tuname.'&'.
$tudom.'&'.
$tcrsid.'&'.
$symb.'&'.
$now.'&'.$ENV{'REMOTE_ADDR'});
my $token=&reply('tmpput:'.$infostr,$lonhost);
if ($token=~/^error\:/) {
&logthis("<font color=\"blue\">WARNING: ".
"Checkout tmpput failed ".$tudom.' - '.$tuname.' - '.$symb.
"</font>");
return '';
}

$token=~s/^(\d+)\_.\_(\d+)$/$1\$2\*$lonhost/;
$token=~tr/a-z/A-Z/;

my %infohash=('resource.0.outtoken' => $token,
'resource.0.checkouttime' => $now,
'resource.0.outremote' => $ENV{'REMOTE_ADDR'});

unless (&cstore(\%infohash,$symb,$tcrsid,$tudom,$tuname) eq 'ok') {
return '';
} else {
&logthis("<font color=\"blue\">WARNING: ".
"Checkout cstore failed ".$tudom.' - '.$tuname.' - '.$symb.
"</font>");
}

if (&log($tudom,$tuname,&homeserver($tuname,$tudom),
&escape('Checkout '.$infostr.' - '.
$token)) ne 'ok') {
return '';
} else {
&logthis("<font color=\"blue\">WARNING: ".
"Checkout log failed ".$tudom.' - '.$tuname.' - '.$symb.
"</font>");
}
return $token;
}

# ------------------------------------------------------------ Check in an item

sub checkin {
my $token=shift;
my $now=time;
my ($ta,$tb,$lonhost)=split(/\*/,$token);
$lonhost=~tr/A-Z/a-z/;
my $dtoken=$ta.'_'.&hostname($lonhost).'_'.$tb;
$dtoken=~s/\W/\_/g;
my ($dummy,$tuname,$tudom,$tcrsid,$symb,$chtim,$rmaddr)=
split(/\&/,&unescape(&reply('tmpget:'.$dtoken,$lonhost)));

unless (($tuname) && ($tudom)) {
&logthis('Check in '.$token.' ('.$dtoken.') failed');
return '';
}

unless (&allowed('mgr',$tcrsid)) {
&logthis('Check in '.$token.' ('.$dtoken.') unauthorized: '.
$env{'user.name'}.' - '.$env{'user.domain'});
return '';
}

my %infohash=('resource.0.intoken' => $token,
'resource.0.checkintime' => $now,
'resource.0.inremote' => $ENV{'REMOTE_ADDR'});

unless (&cstore(\%infohash,$symb,$tcrsid,$tudom,$tuname) eq 'ok') {
return '';
}

if (&log($tudom,$tuname,&homeserver($tuname,$tudom),
&escape('Checkin - '.$token)) ne 'ok') {
return '';
}

return ($symb,$tuname,$tudom,$tcrsid);
}

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

sub expirespread {	sub expirespread {
Line 4928 sub tmprestore {	Line 5144 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 4958 sub store {	Line 5174 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 4995 sub cstore {	Line 5211 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 5151 sub privileged {	Line 5367 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 5175 sub privileged {	Line 5391 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 > $now);
}	}
}	}
Line 5216 sub privileged_by_domain {	Line 5432 sub privileged_by_domain {
my ($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 5264 sub rolesinit {	Line 5480 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 5687 sub unserialize {	Line 5903 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 $escapedkeys hash keys won't get unescaped.
Line 5704 sub dump {	Line 5921 sub dump {
if (!$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(/\&/,$rep);
Line 5722 sub dump {	Line 5938 sub dump {
if (!($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 5766 sub currentdump {	Line 5983 sub currentdump {
my $rep;	my $rep;

if (grep { $_ eq $uhome } current_machine_ids()) {	if (grep { $_ eq $uhome } current_machine_ids()) {
$rep = LONCAPA::Lond::dump_profile_database(join(":", ($sdom, $sname,	$rep = LONCAPA::Lond::dump_profile_database(join(":", ($sdom, $sname,
$courseid)));	$courseid)));
} else {	} else {
$rep = reply('currentdump:'.$sdom.':'.$sname.':'.$courseid,$uhome);	$rep = reply('currentdump:'.$sdom.':'.$sname.':'.$courseid,$uhome);
Line 5892 sub newput {	Line 6109 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 5906 sub putstore {	Line 6123 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 6014 sub tmpdel {	Line 6242 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 6034 sub get_timebased_id {	Line 6262 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 6064 sub get_timebased_id {	Line 6292 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 6084 sub get_timebased_id {	Line 6317 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 6092 sub get_timebased_id {	Line 6326 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 6127 sub portfolio_access {	Line 6372 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 6136 sub get_portfolio_access {	Line 6381 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 6160 sub get_portfolio_access {	Line 6405 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 ($guest) {
Line 6351 sub usertools_access {	Line 6611 sub usertools_access {
unofficial => 1,	unofficial => 1,
community => 1,	community => 1,
textbook => 1,	textbook => 1,
	placement => 1,
);	);
} elsif ($context eq 'requestauthor') {	} elsif ($context eq 'requestauthor') {
%tools = (	%tools = (
Line 6385 sub usertools_access {	Line 6646 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 6647 sub customaccess {	Line 6908 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 6842 sub allowed {	Line 7103 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 6858 sub allowed {	Line 7124 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 6874 sub allowed {	Line 7144 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 6917 sub allowed {	Line 7187 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 6955 sub allowed {	Line 7229 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 7067 sub allowed {	Line 7345 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 7077 sub allowed {	Line 7355 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'});	$env{'request.course.id'});
Line 7135 sub constructaccess {	Line 7413 sub constructaccess {
my ($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 7156 sub constructaccess {	Line 7434 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 7190 sub constructaccess {	Line 7477 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 7210 sub get_comm_blocks {	Line 7523 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,$2);
Line 7238 sub has_comm_blocking {	Line 7545 sub has_comm_blocking {
if (ref($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,$block);
}
}	}
}	}
}	}
Line 7259 sub has_comm_blocking {	Line 7562 sub has_comm_blocking {
my @to_test;	my @to_test;
if (ref($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",$symb);
last;	last;
}	}
}	}
Line 7292 sub has_comm_blocking {	Line 7594 sub has_comm_blocking {
}	}
}	}
}	}
if ($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 7322 sub has_comm_blocking {	Line 7634 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 7463 sub metadata_query {	Line 7808 sub metadata_query {
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 = '';	my $domains = '';
if (ref($domains_hash) eq 'HASH') {	if (ref($domains_hash) eq 'HASH') {
$domains = $domains_hash->{$server};	$domains = $domains_hash->{$server};
}	}
unless ($custom or $customshow) {	unless ($custom or $customshow) {
my $reply=&reply("querysend:".&escape($query).':::'.&escape($domains),$server);	my $reply=&reply("querysend:".&escape($query).':::'.&escape($domains),$server);
Line 7600 sub get_query_reply {	Line 7945 sub get_query_reply {
my $replyfile=LONCAPA::tempdir().$queryid;	my $replyfile=LONCAPA::tempdir().$queryid;
my $reply='';	my $reply='';
for (1..100) {	for (1..100) {
sleep 2;	sleep(0.2);
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 8010 sub auto_crsreq_update {	Line 8355 sub auto_crsreq_update {
':'.&escape($action).':'.&escape($ownername).':'.	':'.&escape($action).':'.&escape($ownername).':'.
&escape($ownerdomain).':'.&escape($fullname).':'.	&escape($ownerdomain).':'.&escape($fullname).':'.
&escape($title).':'.&escape($code).':'.	&escape($title).':'.&escape($code).':'.
&escape($accessstart).':'.&escape($accessend).':'.$info,$homeserver);	&escape($accessstart).':'.&escape($accessend).':'.$info,
	$homeserver);
unless ($response =~ /(con_lost\|error\|no_such_host\|refused)/) {	unless ($response =~ /(con_lost\|error\|no_such_host\|refused)/) {
my @items = split(/&/,$response);	my @items = split(/&/,$response);
foreach my $item (@items) {	foreach my $item (@items) {
Line 8022 sub auto_crsreq_update {	Line 8368 sub auto_crsreq_update {
return \%crsreqresponse;	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 8169 sub plaintext {	Line 8616 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 8290 sub assignrole {	Line 8738 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 = '';	$refused = '';
Line 8298 sub assignrole {	Line 8746 sub assignrole {
my %domdefaults = &get_domain_defaults($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 8391 sub assignrole {	Line 8839 sub assignrole {
$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,$udom);
Line 8581 sub modifyuser {	Line 9029 sub modifyuser {
'current user id "'.$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 8691 sub modifyuser {	Line 9139 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 8706 sub modifystudent {	Line 9154 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 8760 sub modify_student_enrollment {	Line 9208 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 9188 sub files_not_in_path {	Line 9636 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 9284 sub modify_access_controls {	Line 9816 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 9332 sub modify_access_controls {	Line 9864 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 9652 sub stat_file {	Line 10267 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 9796 sub get_userresdata {	Line 10520 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 9813 sub get_userresdata {	Line 10539 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.
	# $what - Last part of param identifier.
# @which - Array of names of resources desired.	# @which - Array of names of resources desired.
# Returns:	# Returns:
# The value of the first reasource in @which that is found in the	# The value of the first reasource in @which that is found in the
Line 9823 sub get_userresdata {	Line 10556 sub get_userresdata {
# 'user', an undefined reference is returned.	# 'user', an undefined reference is returned.
# If none of the resources are found, an undef is returned	# If none of the resources are found, an undef is returned
sub resdata {	sub resdata {
my ($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,$domain);
Line 9832 sub resdata {	Line 10566 sub resdata {
}	}
if (!ref($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 $cachetime = 246060;
	&do_cache_new('ltitools',$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.':'.$cdom;
Line 9851 sub get_numsuppfiles {	Line 10618 sub get_numsuppfiles {
unless ($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 9863 sub get_numsuppfiles {	Line 10630 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 10040 sub EXT {	Line 10817 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 10073 sub EXT {	Line 10849 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 10091 sub EXT {	Line 10871 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 10116 sub EXT {	Line 10899 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 10125 sub EXT {	Line 10909 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 10193 sub get_reply {	Line 10979 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 10293 sub metadata {	Line 11108 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\|) && ($uri !~ m{/(smppg\|bulletinboard\|exttools?)$})) \|\|
($uri =~ m\|/$\|) \|\| ($uri =~ m\|/.meta$\|) \|\| ($uri =~ m{^/*uploaded/.+\.sequence$})) {	($uri =~ m\|/$\|) \|\| ($uri =~ m\|/.meta$\|) \|\| ($uri =~ m{^/*uploaded/.+\.sequence$})) {
return undef;	return undef;
}	}
Line 10558 sub metadata {	Line 11373 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 10834 sub symbverify {	Line 11649 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 ($ids) {
Line 10850 sub symbverify {	Line 11665 sub symbverify {
if (ref($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 10929 sub deversion {	Line 11744 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 10997 sub symbread {	Line 11814 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 11016 sub symbread {	Line 11861 sub symbread {
$syval='';	$syval='';
}	}
}	}
untie(%bighash)	untie(%bighash);
}	}
}	}
if ($syval) {	if ($syval) {
Line 11169 sub rndseed {	Line 12014 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 11354 sub rndseed_CODE_64bit5 {	Line 12200 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) = map { abs($_); } (split(/[,:]/,$rndseed));	my ($num1,$num2) = map { abs($_); } (split(/[,:]/,$rndseed));
if ((!$num1) \|\| (!$num2) \|\| ($num1 > 2147483562) \|\| ($num2 > 2147483398)) {	if ((!$num1) \|\| (!$num2) \|\| ($num1 > 2147483562) \|\| ($num2 > 2147483398)) {
&Math::Random::random_set_seed_from_phrase($rndseed);	&Math::Random::random_set_seed_from_phrase($rndseed);
} else {	} else {
Line 11795 sub clutter {	Line 12641 sub clutter {
# &logthis("Got a blank emb style");	# &logthis("Got a blank emb style");
}	}
}	}
	} elsif ($thisfn =~ m{^/adm/$match_domain/$match_courseid/\d+/exttools?$}) {
	$thisfn='/adm/wrapper'.$thisfn;
}	}
return $thisfn;	return $thisfn;
}	}
Line 11887 sub get_dns {	Line 12735 sub get_dns {
delete($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,$hashref);
return;	return;
}	}
Line 11905 sub get_dns {	Line 12753 sub get_dns {
# ------------------------------------------------------Get DNS checksums file	# ------------------------------------------------------Get DNS checksums file
sub parse_dns_checksums_tab {	sub parse_dns_checksums_tab {
my ($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 $version = shift(@{$lines});	my $version = shift(@{$lines});
if ($version eq $release) {	if ($version eq $release) {
foreach my $line (@{$lines}) {	foreach my $line (@{$lines}) {
my ($file,$version,$shasum) = split(/,/,$line);	my ($file,$version,$shasum) = split(/,/,$line);
	if ($file =~ m{^/etc/httpd/conf}) {
	if ($webconfdir eq '/etc/apache2') {
	$file =~ s{^\Q/etc/httpd/conf/\E}{$webconfdir/};
	}
	}
$chksum{$file} = $shasum;	$chksum{$file} = $shasum;
$revnum{$file} = $version;	$revnum{$file} = $version;
}	}
Line 11967 sub fetch_dns_checksums {	Line 12834 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 12054 sub fetch_dns_checksums {	Line 12921 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 12077 sub fetch_dns_checksums {	Line 12944 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 12199 sub fetch_dns_checksums {	Line 13067 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 12223 sub fetch_dns_checksums {	Line 13091 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{$name})) {
Line 12248 sub fetch_dns_checksums {	Line 13116 sub fetch_dns_checksums {
}	}
push(@{$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 12315 sub all_loncaparevs {	Line 13185 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 2.11);	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 12331 sub all_loncaparevs {	Line 13201 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 12423 BEGIN {	Line 13293 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 12441 BEGIN {	Line 13311 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 12631 were new keys. I.E. 1:foo will become 1:	Line 13509 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 12714 the answer, and also caches if there is	Line 13592 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 12726 usernames (returns hash: name=>id,name=>	Line 13606 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 12767 escaped strings of the action recorded i	Line 13667 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 12825 provided for types, will default to retu	Line 13741 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 12998 Inputs:	Line 13914 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 13064 values that are the resource value. I b	Line 13982 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 13167 will be stored for query	Line 14085 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 13177 and is a possible symb for the URL in $t	Line 14108 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 13232 expirespread($uname,$udom,$stype,$usymb)	Line 14163 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 13246 when viewing in course context.	Line 14177 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 13268 homeserver.	Line 14199 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 13299 $range should be either an integer '100'	Line 14236 $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 13412 server ($udom and $uhome are optional)	Line 14350 server ($udom and $uhome are optional)

=item *	=item *

get_domain_defaults($target_domain,$ignore_cache) : returns hash with defaults	get_domain_defaults($target_domain,$ignore_cache) : returns hash with defaults
for: authentication, language, quotas, timezone, date locale, and portal URL in	for: authentication, language, quotas, timezone, date locale, and portal URL in
the target domain.	the target domain.

Line 13446 requestcourses: ability to request cours	Line 14384 requestcourses: ability to request cours
=over	=over

=item	=item
official, unofficial, community, textbook	official, unofficial, community, textbook, placement

=back	=back

Line 13467 for course's uploaded content.	Line 14405 for course's uploaded content.
=over	=over

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

=back	=back

Line 13477 on your servers.	Line 14416 on your servers.

=over	=over

=item	=item
remotesessions, hostedsessions	remotesessions, hostedsessions

=back	=back
Line 13485 remotesessions, hostedsessions	Line 14424 remotesessions, hostedsessions
=back	=back

In cases where a domain coordinator has never used the "Set Domain Configuration"	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	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	only the following domain defaults: auth_def, auth_arg_def, lang_def
-- corresponding values are authentication type (internal, krb4, krb5,	-- corresponding values are authentication type (internal, krb4, krb5,
or localauth), initial password or a kerberos realm, language (e.g., en-us) --	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	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),	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.	or lastly from values in lonTabs/dns_domain,tab, or lonTabs/domain.tab.
Line 13916 Returns:	Line 14855 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 13928 Args: (first three required; six others	Line 14867 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.1.1172.2.52
changed lines
	Added in v.1.1316