loncom/lonnet/perl/lonnet.pm - diff

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Diff for /loncom/lonnet/perl/lonnet.pm between versions 1.1172.2.112 and 1.1526

version 1.1172.2.112, 2019/08/19 17:57:03	version 1.1526, 2024/05/01 12:06:25
Line 71 delayed.	Line 71 delayed.
package Apache::lonnet;	package Apache::lonnet;

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

	use Encode;

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

my (%badServerCache, $memcache, %courselogs, %accesshash, %domainrolehash,	my (%badServerCache, $memcache, %courselogs, %accesshash, %domainrolehash,
%userrolehash, $processmarker, $dumpcount, %coursedombuf,	%userrolehash, $processmarker, $dumpcount, %coursedombuf,
Line 95 use Cache::Memcached;	Line 96 use Cache::Memcached;
use Digest::MD5;	use Digest::MD5;
use Math::Random;	use Math::Random;
use File::MMagic;	use File::MMagic;
	use Net::CIDR;
	use Sys::Hostname::FQDN();
use LONCAPA qw(:DEFAULT :match);	use LONCAPA qw(:DEFAULT :match);
use LONCAPA::Configuration;	use LONCAPA::Configuration;
use LONCAPA::lonmetadata;	use LONCAPA::lonmetadata;
use LONCAPA::Lond;	use LONCAPA::Lond;
	use LONCAPA::LWPReq;
use LONCAPA::transliterate;	use LONCAPA::transliterate;

use File::Copy;	use File::Copy;
Line 111 require Exporter;	Line 115 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 125 our @EXPORT = qw(%env);	Line 130 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 $ip = &get_requestor_ip();
$id => {	my $logentry = {
'exe_uname' => $env{'user.name'},	$id => {
'exe_udom' => $env{'user.domain'},	'exe_uname' => $env{'user.name'},
'exe_time' => $now,	'exe_udom' => $env{'user.domain'},
'exe_ip' => $ENV{'REMOTE_ADDR'},	'exe_time' => $now,
'delflag' => $delflag,	'exe_ip' => $ip,
'logentry' => $storehash,	'delflag' => $delflag,
'uname' => $uname,	'logentry' => $storehash,
'udom' => $udom,	'uname' => $uname,
}	'udom' => $udom,
	}
};	};
return &put('nohist_'.$hash_name,$logentry,$cdom,$cnum);	return &put('nohist_'.$hash_name,$logentry,$cdom,$cnum);
}	}
}	}

Line 182 sub create_connection {	Line 188 sub create_connection {
Type => SOCK_STREAM,	Type => SOCK_STREAM,
Timeout => 10);	Timeout => 10);
return 0 if (!$client);	return 0 if (!$client);
print $client (join(':',$hostname,$lonid,&machine_ids($hostname))."\n");	print $client (join(':',$hostname,$lonid,&machine_ids($hostname),$loncaparevs{$lonid})."\n");
my $result = <$client>;	my $result = <$client>;
chomp($result);	chomp($result);
return 1 if ($result eq 'done');	return 1 if ($result eq 'done');
Line 227 sub get_server_distarch {	Line 233 sub get_server_distarch {
return;	return;
}	}

	sub get_servercerts_info {
	my ($lonhost,$hostname,$context) = @_;
	return if ($lonhost eq '');
	if ($hostname eq '') {
	$hostname = &hostname($lonhost);
	}
	return if ($hostname eq '');
	my ($rep,$uselocal);
	if ($context eq 'install') {
	$uselocal = 1;
	} elsif (grep { $_ eq $lonhost } &current_machine_ids()) {
	$uselocal = 1;
	}
	if (($context ne 'cgi') && ($context ne 'install') && ($uselocal)) {
	my $distro = (split(/\:/,&get_server_distarch($lonhost)))[0];
	if ($distro eq '') {
	$uselocal = 0;
	} elsif ($distro =~ /^(?:centos\|redhat\|scientific)(\d+)$/) {
	if ($1 < 6) {
	$uselocal = 0;
	}
	} elsif ($distro =~ /^(?:sles)(\d+)$/) {
	if ($1 < 12) {
	$uselocal = 0;
	}
	}
	}
	if ($uselocal) {
	$rep = LONCAPA::Lond::server_certs(\%perlvar,$lonhost,$hostname);
	} else {
	$rep=&reply('servercerts',$lonhost);
	}
	my ($result,%returnhash);
	if (($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 261 sub get_server_loncaparev {	Line 315 sub get_server_loncaparev {
$answer = &reply('serverloncaparev',$lonhost);	$answer = &reply('serverloncaparev',$lonhost);
if (($answer eq 'unknown_cmd') \|\| ($answer eq 'con_lost')) {	if (($answer eq 'unknown_cmd') \|\| ($answer eq 'con_lost')) {
if ($caller eq 'loncron') {	if ($caller eq 'loncron') {
my $ua=new LWP::UserAgent;	my $hostname = &hostname($lonhost);
$ua->timeout(4);
my $protocol = $protocol{$lonhost};	my $protocol = $protocol{$lonhost};
$protocol = 'http' if ($protocol ne 'https');	$protocol = 'http' if ($protocol ne 'https');
my $url = $protocol.'://'.&hostname($lonhost).'/adm/about.html';	my $url = $protocol.'://'.$hostname.'/adm/about.html';
my $request=new HTTP::Request('GET',$url);	my $request=new HTTP::Request('GET',$url);
my $response=$ua->request($request);	my $response=&LONCAPA::LWPReq::makerequest($lonhost,$request,'',\%perlvar,4,1);
unless ($response->is_error()) {	unless ($response->is_error()) {
my $content = $response->content;	my $content = $response->content;
if ($content =~ /<p>VERSION\:\s*([\w.\-]+)<\/p>/) {	if ($content =~ /<p>VERSION\:\s*([\w.\-]+)<\/p>/) {
Line 358 sub remote_devalidate_cache {	Line 411 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;
	}

	sub sign_lti {
	my ($cdom,$cnum,$crsdef,$type,$context,$url,$ltinum,$keynum,$paramsref,$inforef) = @_;
	my $chome;
	if (&domain($cdom) ne '') {
	if ($crsdef) {
	$chome = &homeserver($cnum,$cdom);
	} else {
	$chome = &domain($cdom,'primary');
	}
	}
	if ($cdom && $chome && ($chome ne 'no_host')) {
	if ((ref($paramsref) eq 'HASH') &&
	(ref($inforef) eq 'HASH')) {
	my $rep;
	if (grep { $_ eq $chome } &current_machine_ids()) {
	# domain information is hosted on this machine
	$rep =
	&LONCAPA::Lond::sign_lti_payload($cdom,$cnum,$crsdef,$type,
	$context,$url,$ltinum,$keynum,
	$perlvar{'lonVersion'},
	$paramsref,$inforef);
	if (ref($rep) eq 'HASH') {
	return ('ok',$rep);
	}
	} else {
	my ($escurl,$params,$info);
	$escurl = &escape($url);
	if (ref($paramsref) eq 'HASH') {
	$params = &freeze_escape($paramsref);
	}
	if (ref($inforef) eq 'HASH') {
	$info = &freeze_escape($inforef);
	}
	$rep=&reply("encrypt:signlti:$cdom:$cnum:$crsdef:$type:$context:$escurl:$ltinum:$keynum:$params:$info",$chome);
	}
	if (($rep eq '') \|\| ($rep =~ /^con_lost\|error\|no_such_host\|unknown_cmd/i)) {
	return ();
	} elsif (($inforef->{'respfmt'} eq 'to_post_body') \|\|
	($inforef->{'respfmt'} eq 'to_authorization_header')) {
	return ('ok',$rep);
	} else {
	my %returnhash;
	foreach my $item (split(/\&/,$rep)) {
	my ($name,$value)=split(/\=/,$item);
	$returnhash{&unescape($name)}=&thaw_unescape($value);
	}
	return('ok',\%returnhash);
	}
	} else {
	return ();
	}
	} else {
	return ();
	&logthis("sign_lti failed - no homeserver and/or domain ($cdom) ($chome)");
	}
}	}

# -------------------------------------------------- Non-critical communication	# -------------------------------------------------- Non-critical communication
Line 390 sub subreply {	Line 501 sub subreply {
} else {	} else {
&create_connection(&hostname($server),$server);	&create_connection(&hostname($server),$server);
}	}
sleep(0.1); # Try again later if failed connection.	sleep(0.1); # Try again later if failed connection.
}	}
my $answer;	my $answer;
if ($client) {	if ($client) {
Line 414 sub reply {	Line 525 sub reply {
my $subcmd = $1;	my $subcmd = $1;
if (($subcmd eq 'auth') \|\| ($subcmd eq 'passwd') \|\|	if (($subcmd eq 'auth') \|\| ($subcmd eq 'passwd') \|\|
($subcmd eq 'changeuserauth') \|\| ($subcmd eq 'makeuser') \|\|	($subcmd eq 'changeuserauth') \|\| ($subcmd eq 'makeuser') \|\|
($subcmd eq 'putdom') \|\| ($subcmd eq 'autoexportgrades')) {	($subcmd eq 'putdom') \|\| ($subcmd eq 'autoexportgrades') \|\|
	($subcmd eq 'put')) {
(undef,undef,my @rest) = split(/:/,$cmd);	(undef,undef,my @rest) = split(/:/,$cmd);
if (($subcmd eq 'auth') \|\| ($subcmd eq 'putdom')) {	if (($subcmd eq 'auth') \|\| ($subcmd eq 'putdom')) {
splice(@rest,2,1,'Hidden');	splice(@rest,2,1,'Hidden');
} elsif ($subcmd eq 'passwd') {	} elsif ($subcmd eq 'passwd') {
splice(@rest,2,2,('Hidden','Hidden'));	splice(@rest,2,2,('Hidden','Hidden'));
} elsif (($subcmd eq 'changeuserauth') \|\| ($subcmd eq 'makeuser') \|\|	} elsif (($subcmd eq 'changeuserauth') \|\| ($subcmd eq 'makeuser') \|\|
($subcmd eq 'autoexportgrades')) {	($subcmd eq 'autoexportgrades') \|\| ($subcmd eq 'put')) {
splice(@rest,3,1,'Hidden');	splice(@rest,3,1,'Hidden');
}	}
$logged = join(':',('encrypt:'.$subcmd,@rest));	$logged = join(':',('encrypt:'.$subcmd,@rest));
Line 463 sub reconlonc {	Line 575 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 $loncpid not responding, giving up</font>");
Line 658 sub check_for_valid_session {	Line 770 sub check_for_valid_session {
}	}
}	}
if (!-e "$lonidsdir/$handle.id") {	if (!-e "$lonidsdir/$handle.id") {
if ((ref($domref)) && ($name eq 'lonID') &&	if ((ref($domref)) && ($name eq 'lonID') &&
($handle =~ /^($match_username)\_\d+\_($match_domain)\_(.+)$/)) {	($handle =~ /^($match_username)\_\d+\_($match_domain)\_(.+)$/)) {
my ($possuname,$possudom,$possuhome) = ($1,$2,$3);	my ($possuname,$possudom,$possuhome) = ($1,$2,$3);
if ((&domain($possudom) ne '') && (&homeserver($possuname,$possudom) eq $possuhome)) {	if ((&domain($possudom) ne '') && (&homeserver($possuname,$possudom) eq $possuhome)) {
Line 687 sub check_for_valid_session {	Line 799 sub check_for_valid_session {
if (ref($userhashref) eq 'HASH') {	if (ref($userhashref) eq 'HASH') {
$userhashref->{'name'} = $disk_env{'user.name'};	$userhashref->{'name'} = $disk_env{'user.name'};
$userhashref->{'domain'} = $disk_env{'user.domain'};	$userhashref->{'domain'} = $disk_env{'user.domain'};
	if ($disk_env{'request.role'}) {
	$userhashref->{'role'} = $disk_env{'request.role'};
	}
	$userhashref->{'lti'} = $disk_env{'request.lti.login'};
	if ($userhashref->{'lti'}) {
	$userhashref->{'ltitarget'} = $disk_env{'request.lti.target'};
	$userhashref->{'ltiuri'} = $disk_env{'request.lti.uri'};
	}
}	}
untie(%disk_env);	untie(%disk_env);

Line 915 sub userload {	Line 1035 sub userload {
# ------------------------------ Find server with least workload from spare.tab	# ------------------------------ Find server with least workload from spare.tab

sub spareserver {	sub spareserver {
my ($loadpercent,$userloadpercent,$want_server_name,$udom) = @_;	my ($r,$loadpercent,$userloadpercent,$want_server_name,$udom) = @_;
my $spare_server;	my $spare_server;
if ($userloadpercent !~ /\d/) { $userloadpercent=0; }	if ($userloadpercent !~ /\d/) { $userloadpercent=0; }
my $lowest_load=($loadpercent > $userloadpercent) ? $loadpercent	my $lowest_load=($loadpercent > $userloadpercent) ? $loadpercent
: $userloadpercent;	: $userloadpercent;
my ($uint_dom,$remotesessions);	my ($uint_dom,$remotesessions);
if (($udom ne '') && (&domain($udom) ne '')) {	if (($udom ne '') && (&domain($udom) ne '')) {
my $uprimary_id = &Apache::lonnet::domain($udom,'primary');	my $uprimary_id = &domain($udom,'primary');
$uint_dom = &Apache::lonnet::internet_dom($uprimary_id);	$uint_dom = &internet_dom($uprimary_id);
my %udomdefaults = &Apache::lonnet::get_domain_defaults($udom);	my %udomdefaults = &get_domain_defaults($udom);
$remotesessions = $udomdefaults{'remotesessions'};	$remotesessions = $udomdefaults{'remotesessions'};
}	}
my $spareshash = &this_host_spares($udom);	my $spareshash = &this_host_spares($udom);
Line 953 sub spareserver {	Line 1073 sub spareserver {
}	}

if (!$want_server_name) {	if (!$want_server_name) {
my $protocol = 'http';
if ($protocol{$spare_server} eq 'https') {
$protocol = $protocol{$spare_server};
}
if (defined($spare_server)) {	if (defined($spare_server)) {
my $hostname = &hostname($spare_server);	my $hostname = &hostname($spare_server);
if (defined($hostname)) {	if (defined($hostname)) {
	my $protocol = 'http';
	if ($protocol{$spare_server} eq 'https') {
	$protocol = $protocol{$spare_server};
	}
	my $alias = &use_proxy_alias($r,$spare_server);
	$hostname = $alias if ($alias ne '');
$spare_server = $protocol.'://'.$hostname;	$spare_server = $protocol.'://'.$hostname;
}	}
}	}
Line 1026 sub find_existing_session {	Line 1148 sub find_existing_session {
return;	return;
}	}

	sub delusersession {
	my ($lonid,$udom,$uname) = @_;
	my $uprimary_id = &domain($udom,'primary');
	my $uintdom = &internet_dom($uprimary_id);
	my $intdom = &internet_dom($lonid);
	my $serverhomedom = &host_domain($lonid);
	if (($uintdom ne '') && ($uintdom eq $intdom)) {
	return &reply(join(':','delusersession',
	map {&escape($_)} ($udom,$uname)),$lonid);
	}
	return;
	}

# check if user's browser sent load balancer cookie and server still has session	# check if user's browser sent load balancer cookie and server still has session
# and is not overloaded.	# and is not overloaded.
sub check_for_balancer_cookie {	sub check_for_balancer_cookie {
Line 1081 sub check_for_balancer_cookie {	Line 1216 sub check_for_balancer_cookie {
return ($otherserver,$cookie);	return ($otherserver,$cookie);
}	}

	sub updatebalcookie {
	my ($cookie,$balancer,$lastentry)=@_;
	if ($cookie =~ /^($match_domain)\_($match_username)\_[a-f0-9]{32}$/) {
	my ($udom,$uname) = ($1,$2);
	my $uprimary_id = &domain($udom,'primary');
	my $uintdom = &internet_dom($uprimary_id);
	my $intdom = &internet_dom($balancer);
	my $serverhomedom = &host_domain($balancer);
	if (($uintdom ne '') && ($uintdom eq $intdom)) {
	return &reply('updatebalcookie:'.&escape($cookie).':'.&escape($lastentry),$balancer);
	}
	}
	return;
	}

sub delbalcookie {	sub delbalcookie {
my ($cookie,$balancer) =@_;	my ($cookie,$balancer) =@_;
if ($cookie =~ /^($match_domain)\_($match_username)\_[a-f0-9]{32}$/) {	if ($cookie =~ /^($match_domain)\_($match_username)\_[a-f0-9]{32}$/) {
Line 1090 sub delbalcookie {	Line 1240 sub delbalcookie {
my $intdom = &internet_dom($balancer);	my $intdom = &internet_dom($balancer);
my $serverhomedom = &host_domain($balancer);	my $serverhomedom = &host_domain($balancer);
if (($uintdom ne '') && ($uintdom eq $intdom)) {	if (($uintdom ne '') && ($uintdom eq $intdom)) {
return &reply("delbalcookie:$cookie",$balancer);	return &reply('delbalcookie:'.&escape($cookie),$balancer);
}	}
}	}
}	}
Line 1118 sub choose_server {	Line 1268 sub choose_server {
unless (defined($cached)) {	unless (defined($cached)) {
my $cachetime = 606024;	my $cachetime = 606024;
my %domconfig =	my %domconfig =
&Apache::lonnet::get_dom('configuration',['loadbalancing'],$udom);	&get_dom('configuration',['loadbalancing'],$udom);
if (ref($domconfig{'loadbalancing'}) eq 'HASH') {	if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
$balancers = &do_cache_new('loadbalancing',$udom,$domconfig{'loadbalancing'},	$balancers = &do_cache_new('loadbalancing',$udom,$domconfig{'loadbalancing'},
$cachetime);	$cachetime);
Line 1126 sub choose_server {	Line 1276 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 ($loginvia) {
Line 1161 sub choose_server {	Line 1311 sub choose_server {
return ($login_host,$hostname,$portal_path,$isredirect,$lowest_load);	return ($login_host,$hostname,$portal_path,$isredirect,$lowest_load);
}	}

	sub get_course_sessions {
	my ($cnum,$cdom,$lastactivity) = @_;
	my %servers = &internet_dom_servers($cdom);
	my %returnhash;
	foreach my $server (sort(keys(%servers))) {
	my $rep = &reply("coursesessions:$cdom:$cnum:$lastactivity",$server);
	my @pairs=split(/\&/,$rep);
	unless (($rep eq 'unknown_cmd') \|\| ($rep =~ /^error/)) {
	foreach my $item (@pairs) {
	my ($key,$value)=split(/=/,$item,2);
	$key = &unescape($key);
	next if ($key =~ /^error: 2 /);
	if (exists($returnhash{$key})) {
	next if ($value < $returnhash{$key});
	}
	$returnhash{$key}=$value;
	}
	}
	}
	return %returnhash;
	}

# --------------------------------------------- Try to change a user's password	# --------------------------------------------- Try to change a user's password

sub changepass {	sub changepass {
Line 1196 sub changepass {	Line 1368 sub changepass {
} elsif ($answer =~ "invalid_client") {	} elsif ($answer =~ "invalid_client") {
&logthis("$server refused to change $uname in $udom password because ".	&logthis("$server refused to change $uname in $udom password because ".
"it was a reset by e-mail originating from an invalid server.");	"it was a reset by e-mail originating from an invalid server.");
	} elsif ($answer =~ "^prioruse") {
	&logthis("$server refused to change $uname in $udom password because ".
	"the password had been used before");
}	}
return $answer;	return $answer;
}	}
Line 1205 sub changepass {	Line 1380 sub changepass {
sub queryauthenticate {	sub queryauthenticate {
my ($uname,$udom)=@_;	my ($uname,$udom)=@_;
my $uhome=&homeserver($uname,$udom);	my $uhome=&homeserver($uname,$udom);
if (!$uhome) {	if ((!$uhome) \|\| ($uhome eq 'no_host')) {
&logthis("User $uname at $udom is unknown when looking for authentication mechanism");	&logthis("User $uname at $udom is unknown when looking for authentication mechanism");
return 'no_host';	return 'no_host';
}	}
Line 1254 sub authenticate {	Line 1429 sub authenticate {
}	}
if ($answer eq 'non_authorized') {	if ($answer eq 'non_authorized') {
&logthis("User $uname at $udom rejected by $uhome");	&logthis("User $uname at $udom rejected by $uhome");
return 'no_host';	return 'no_host';
}	}
&logthis("User $uname at $udom threw error $answer when checking authentication mechanism");	&logthis("User $uname at $udom threw error $answer when checking authentication mechanism");
return 'no_host';	return 'no_host';
}	}

	sub can_switchserver {
	my ($udom,$home) = @_;
	my ($canswitch,@intdoms);
	my $internet_names = &get_internet_names($home);
	if (ref($internet_names) eq 'ARRAY') {
	@intdoms = @{$internet_names};
	}
	my $uint_dom = &internet_dom(&domain($udom,'primary'));
	if ($uint_dom ne '' && grep(/^\Q$uint_dom\E$/,@intdoms)) {
	$canswitch = 1;
	} else {
	my $serverhomeID = &get_server_homeID(&hostname($home));
	my $serverhomedom = &host_domain($serverhomeID);
	my %defdomdefaults = &get_domain_defaults($serverhomedom);
	my %udomdefaults = &get_domain_defaults($udom);
	my $remoterev = &get_server_loncaparev('',$home);
	$canswitch = &can_host_session($udom,$home,$remoterev,
	$udomdefaults{'remotesessions'},
	$defdomdefaults{'hostedsessions'});
	}
	return $canswitch;
	}

sub can_host_session {	sub can_host_session {
my ($udom,$lonhost,$remoterev,$remotesessions,$hostedsessions) = @_;	my ($udom,$lonhost,$remoterev,$remotesessions,$hostedsessions) = @_;
my $canhost = 1;	my $canhost = 1;
my $host_idn = &Apache::lonnet::internet_dom($lonhost);	my $host_idn = &internet_dom($lonhost);
if (ref($remotesessions) eq 'HASH') {	if (ref($remotesessions) eq 'HASH') {
if (ref($remotesessions->{'excludedomain'}) eq 'ARRAY') {	if (ref($remotesessions->{'excludedomain'}) eq 'ARRAY') {
if (grep(/^\Q$host_idn\E$/,@{$remotesessions->{'excludedomain'}})) {	if (grep(/^\Q$host_idn\E$/,@{$remotesessions->{'excludedomain'}})) {
Line 1299 sub can_host_session {	Line 1497 sub can_host_session {
}	}
if ($canhost) {	if ($canhost) {
if (ref($hostedsessions) eq 'HASH') {	if (ref($hostedsessions) eq 'HASH') {
my $uprimary_id = &Apache::lonnet::domain($udom,'primary');	my $uprimary_id = &domain($udom,'primary');
my $uint_dom = &Apache::lonnet::internet_dom($uprimary_id);	my $uint_dom = &internet_dom($uprimary_id);
if (ref($hostedsessions->{'excludedomain'}) eq 'ARRAY') {	if (ref($hostedsessions->{'excludedomain'}) eq 'ARRAY') {
if (($uint_dom ne '') &&	if (($uint_dom ne '') &&
(grep(/^\Q$uint_dom\E$/,@{$hostedsessions->{'excludedomain'}}))) {	(grep(/^\Q$uint_dom\E$/,@{$hostedsessions->{'excludedomain'}}))) {
Line 1334 sub spare_can_host {	Line 1532 sub spare_can_host {
$canhost = 0;	$canhost = 0;
}	}
}	}
	if ($canhost) {
	if (ref($defdomdefaults{'offloadoth'}) eq 'HASH') {
	if ($defdomdefaults{'offloadoth'}{$try_server}) {
	unless (&shared_institution($udom,$try_server)) {
	$canhost = 0;
	}
	}
	}
	}
if (($canhost) && ($uint_dom)) {	if (($canhost) && ($uint_dom)) {
my @intdoms;	my @intdoms;
my $internet_names = &get_internet_names($try_server);	my $internet_names = &get_internet_names($try_server);
Line 1383 sub spares_for_offload {	Line 1590 sub spares_for_offload {
} else {	} else {
my $cachetime = 606024;	my $cachetime = 606024;
my %domconfig =	my %domconfig =
&Apache::lonnet::get_dom('configuration',['usersessions'],$dom_in_use);	&get_dom('configuration',['usersessions'],$dom_in_use);
if (ref($domconfig{'usersessions'}) eq 'HASH') {	if (ref($domconfig{'usersessions'}) eq 'HASH') {
if (ref($domconfig{'usersessions'}{'spares'}) eq 'HASH') {	if (ref($domconfig{'usersessions'}{'spares'}) eq 'HASH') {
if (ref($domconfig{'usersessions'}{'spares'}{$lonhost_in_use}) eq 'HASH') {	if (ref($domconfig{'usersessions'}{'spares'}{$lonhost_in_use}) eq 'HASH') {
Line 1432 sub get_lonbalancer_config {	Line 1639 sub get_lonbalancer_config {
sub check_loadbalancing {	sub check_loadbalancing {
my ($uname,$udom,$caller) = @_;	my ($uname,$udom,$caller) = @_;
my ($is_balancer,$currtargets,$currrules,$dom_in_use,$homeintdom,	my ($is_balancer,$currtargets,$currrules,$dom_in_use,$homeintdom,
$rule_in_effect,$offloadto,$otherserver,$setcookie);	$rule_in_effect,$offloadto,$otherserver,$setcookie,$dom_balancers);
my $lonhost = $perlvar{'lonHostID'};	my $lonhost = $perlvar{'lonHostID'};
my @hosts = &current_machine_ids();	my @hosts = &current_machine_ids();
my $uprimary_id = &Apache::lonnet::domain($udom,'primary');	my $uprimary_id = &domain($udom,'primary');
my $uintdom = &Apache::lonnet::internet_dom($uprimary_id);	my $uintdom = &internet_dom($uprimary_id);
my $intdom = &Apache::lonnet::internet_dom($lonhost);	my $intdom = &internet_dom($lonhost);
my $serverhomedom = &host_domain($lonhost);	my $serverhomedom = &host_domain($lonhost);
my $domneedscache;	my $domneedscache;
my $cachetime = 606024;	my $cachetime = 606024;

if (($uintdom ne '') && ($uintdom eq $intdom)) {	if (($uintdom ne '') && ($uintdom eq $intdom)) {
Line 1451 sub check_loadbalancing {	Line 1658 sub check_loadbalancing {
my ($result,$cached)=&is_cached_new('loadbalancing',$dom_in_use);	my ($result,$cached)=&is_cached_new('loadbalancing',$dom_in_use);
unless (defined($cached)) {	unless (defined($cached)) {
my %domconfig =	my %domconfig =
&Apache::lonnet::get_dom('configuration',['loadbalancing'],$dom_in_use);	&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 {	} else {
Line 1459 sub check_loadbalancing {	Line 1666 sub check_loadbalancing {
}	}
}	}
if (ref($result) eq 'HASH') {	if (ref($result) eq 'HASH') {
($is_balancer,$currtargets,$currrules,$setcookie) =	($is_balancer,$currtargets,$currrules,$setcookie,$dom_balancers) =
&check_balancer_result($result,@hosts);	&check_balancer_result($result,@hosts);
if ($is_balancer) {	if ($is_balancer) {
if (ref($currrules) eq 'HASH') {	if (ref($currrules) eq 'HASH') {
Line 1512 sub check_loadbalancing {	Line 1719 sub check_loadbalancing {
($result,$cached)=&is_cached_new('loadbalancing',$serverhomedom);	($result,$cached)=&is_cached_new('loadbalancing',$serverhomedom);
unless (defined($cached)) {	unless (defined($cached)) {
my %domconfig =	my %domconfig =
&Apache::lonnet::get_dom('configuration',['loadbalancing'],$serverhomedom);	&get_dom('configuration',['loadbalancing'],$serverhomedom);
if (ref($domconfig{'loadbalancing'}) eq 'HASH') {	if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
$result = &do_cache_new('loadbalancing',$serverhomedom,$domconfig{'loadbalancing'},$cachetime);	$result = &do_cache_new('loadbalancing',$serverhomedom,$domconfig{'loadbalancing'},$cachetime);
} else {	} else {
Line 1520 sub check_loadbalancing {	Line 1727 sub check_loadbalancing {
}	}
}	}
if (ref($result) eq 'HASH') {	if (ref($result) eq 'HASH') {
($is_balancer,$currtargets,$currrules,$setcookie) =	($is_balancer,$currtargets,$currrules,$setcookie,$dom_balancers) =
&check_balancer_result($result,@hosts);	&check_balancer_result($result,@hosts);
if ($is_balancer) {	if ($is_balancer) {
if (ref($currrules) eq 'HASH') {	if (ref($currrules) eq 'HASH') {
Line 1552 sub check_loadbalancing {	Line 1759 sub check_loadbalancing {
if ($domneedscache) {	if ($domneedscache) {
&do_cache_new('loadbalancing',$domneedscache,$is_balancer,$cachetime);	&do_cache_new('loadbalancing',$domneedscache,$is_balancer,$cachetime);
}	}
if ($is_balancer) {	if (($is_balancer) && ($caller ne 'switchserver')) {
my $lowest_load = 30000;	my $lowest_load = 30000;
if (ref($offloadto) eq 'HASH') {	if (ref($offloadto) eq 'HASH') {
if (ref($offloadto->{'primary'}) eq 'ARRAY') {	if (ref($offloadto->{'primary'}) eq 'ARRAY') {
Line 1592 sub check_loadbalancing {	Line 1799 sub check_loadbalancing {
}	}
}	}
}	}
unless ($homeintdom) {
undef($setcookie);
}
}	}
return ($is_balancer,$otherserver,$setcookie);	if (($is_balancer) && (!$homeintdom)) {
	undef($setcookie);
	}
	return ($is_balancer,$otherserver,$setcookie,$offloadto,$dom_balancers);
}	}

sub check_balancer_result {	sub check_balancer_result {
my ($result,@hosts) = @_;	my ($result,@hosts) = @_;
my ($is_balancer,$currtargets,$currrules,$setcookie);	my ($is_balancer,$currtargets,$currrules,$setcookie,$dom_balancers);
if (ref($result) eq 'HASH') {	if (ref($result) eq 'HASH') {
if ($result->{'lonhost'} ne '') {	if ($result->{'lonhost'} ne '') {
my $currbalancer = $result->{'lonhost'};	my $currbalancer = $result->{'lonhost'};
Line 1610 sub check_balancer_result {	Line 1817 sub check_balancer_result {
$currtargets = $result->{'targets'};	$currtargets = $result->{'targets'};
$currrules = $result->{'rules'};	$currrules = $result->{'rules'};
}	}
	$dom_balancers = $currbalancer;
} else {	} else {
foreach my $key (keys(%{$result})) {	if (keys(%{$result})) {
if (($key ne '') && (grep(/^\Q$key\E$/,@hosts)) &&	foreach my $key (keys(%{$result})) {
(ref($result->{$key}) eq 'HASH')) {	if (($key ne '') && (grep(/^\Q$key\E$/,@hosts)) &&
$is_balancer = 1;	(ref($result->{$key}) eq 'HASH')) {
$currrules = $result->{$key}{'rules'};	$is_balancer = 1;
$currtargets = $result->{$key}{'targets'};	$currrules = $result->{$key}{'rules'};
$setcookie = $result->{$key}{'cookie'};	$currtargets = $result->{$key}{'targets'};
last;	$setcookie = $result->{$key}{'cookie'};
	last;
	}
}	}
	$dom_balancers = join(',',sort(keys(%{$result})));
}	}
}	}
}	}
return ($is_balancer,$currtargets,$currrules,$setcookie);	return ($is_balancer,$currtargets,$currrules,$setcookie,$dom_balancers);
}	}

sub get_loadbalancer_targets {	sub get_loadbalancer_targets {
Line 1641 sub get_loadbalancer_targets {	Line 1852 sub get_loadbalancer_targets {
}	}
} elsif ($rule_in_effect eq 'externalbalancer') {	} elsif ($rule_in_effect eq 'externalbalancer') {
my %domconfig =	my %domconfig =
&Apache::lonnet::get_dom('configuration',['loadbalancing'],$udom);	&get_dom('configuration',['loadbalancing'],$udom);
if (ref($domconfig{'loadbalancing'}) eq 'HASH') {	if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
if ($domconfig{'loadbalancing'}{'lonhost'} ne '') {	if ($domconfig{'loadbalancing'}{'lonhost'} ne '') {
if (&hostname($domconfig{'loadbalancing'}{'lonhost'}) ne '') {	if (&hostname($domconfig{'loadbalancing'}{'lonhost'}) ne '') {
Line 1695 sub internet_dom_servers {	Line 1906 sub internet_dom_servers {
return %uniqservers;	return %uniqservers;
}	}

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

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

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

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

my %homecache;	my %homecache;
Line 1720 sub homeserver {	Line 2026 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 $idlist=join('&', map { &escape($_); } @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(/\&/,$reply);
Line 1739 sub idget {	Line 2061 sub idget {
for ($i=0;$i<=$#ids;$i++) {	for ($i=0;$i<=$#ids;$i++) {
if ($answer[$i]) {	if ($answer[$i]) {
$returnhash{$ids[$i]}=&unescape($answer[$i]);	$returnhash{$ids[$i]}=&unescape($answer[$i]);
}	}
}	}
}	}
return %returnhash;	return %returnhash;
}	}

Line 1756 sub idrget {	Line 2078 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 1824 sub dump_dom {	Line 2227 sub dump_dom {
# ------------------------------------------ get items from domain db files	# ------------------------------------------ get items from domain db files

sub get_dom {	sub get_dom {
my ($namespace,$storearr,$udom,$uhome)=@_;	my ($namespace,$storearr,$udom,$uhome,$encrypt)=@_;
return if ($udom eq 'public');	return if ($udom eq 'public');
my $items='';	my $items='';
foreach my $item (@$storearr) {	foreach my $item (@$storearr) {
Line 1847 sub get_dom {	Line 2250 sub get_dom {
}	}
}	}
if ($udom && $uhome && ($uhome ne 'no_host')) {	if ($udom && $uhome && ($uhome ne 'no_host')) {
my $rep=&reply("getdom:$udom:$namespace:$items",$uhome);	my $rep;
	if (grep { $_ eq $uhome } &current_machine_ids()) {
	# domain information is hosted on this machine
	$rep = &LONCAPA::Lond::get_dom("getdom:$udom:$namespace:$items");
	} else {
	if ($encrypt) {
	$rep=&reply("encrypt:egetdom:$udom:$namespace:$items",$uhome);
	} else {
	$rep=&reply("getdom:$udom:$namespace:$items",$uhome);
	}
	}
my %returnhash;	my %returnhash;
if ($rep eq '' \|\| $rep =~ /^error: 2 /) {	if ($rep eq '' \|\| $rep =~ /^error: 2 /) {
return %returnhash;	return %returnhash;
Line 1870 sub get_dom {	Line 2283 sub get_dom {
# -------------------------------------------- put items in domain db files	# -------------------------------------------- put items in domain db files

sub put_dom {	sub put_dom {
my ($namespace,$storehash,$udom,$uhome)=@_;	my ($namespace,$storehash,$udom,$uhome,$encrypt)=@_;
if (!$udom) {	if (!$udom) {
$udom=$env{'user.domain'};	$udom=$env{'user.domain'};
if (defined(&domain($udom,'primary'))) {	if (defined(&domain($udom,'primary'))) {
Line 1891 sub put_dom {	Line 2304 sub put_dom {
$items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';	$items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
}	}
$items=~s/\&$//;	$items=~s/\&$//;
return &reply("putdom:$udom:$namespace:$items",$uhome);	if ($encrypt) {
	return &reply("encrypt:putdom:$udom:$namespace:$items",$uhome);
	} else {
	return &reply("putdom:$udom:$namespace:$items",$uhome);
	}
} else {	} else {
&logthis("put_dom failed - no homeserver and/or domain");	&logthis("put_dom failed - no homeserver and/or domain");
}	}
Line 1925 sub del_dom {	Line 2342 sub del_dom {
}	}
}	}

	sub store_dom {
	my ($storehash,$id,$namespace,$dom,$home,$encrypt) = @_;
	$$storehash{'ip'}=&get_requestor_ip();
	$$storehash{'host'}=$perlvar{'lonHostID'};
	my $namevalue='';
	foreach my $key (keys(%{$storehash})) {
	$namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
	}
	$namevalue=~s/\&$//;
	if (grep { $_ eq $home } current_machine_ids()) {
	return LONCAPA::Lond::store_dom("storedom:$dom:$namespace:$id:$namevalue");
	} else {
	if ($namespace eq 'private') {
	return 'refused';
	} elsif ($encrypt) {
	return reply("encrypt:storedom:$dom:$namespace:$id:$namevalue",$home);
	} else {
	return reply("storedom:$dom:$namespace:$id:$namevalue",$home);
	}
	}
	}

	sub restore_dom {
	my ($id,$namespace,$dom,$home,$encrypt) = @_;
	my $answer;
	if (grep { $_ eq $home } current_machine_ids()) {
	$answer = LONCAPA::Lond::restore_dom("restoredom:$dom:$namespace:$id");
	} elsif ($namespace ne 'private') {
	if ($encrypt) {
	$answer=&reply("encrypt:restoredom:$dom:$namespace:$id",$home);
	} else {
	$answer=&reply("restoredom:$dom:$namespace:$id",$home);
	}
	}
	my %returnhash=();
	unless (($answer eq '') \|\| ($answer eq 'con_lost') \|\| ($answer eq 'refused') \|\|
	($answer eq 'unknown_cmd') \|\| ($answer eq 'rejected')) {
	foreach my $line (split(/\&/,$answer)) {
	my ($name,$value)=split(/\=/,$line);
	$returnhash{&unescape($name)}=&thaw_unescape($value);
	}
	my $version;
	for ($version=1;$version<=$returnhash{'version'};$version++) {
	foreach my $item (split(/\:/,$returnhash{$version.':keys'})) {
	$returnhash{$item}=$returnhash{$version.':'.$item};
	}
	}
	}
	return %returnhash;
	}

# ----------------------------------construct domainconfig user for a domain	# ----------------------------------construct domainconfig user for a domain
sub get_domainconfiguser {	sub get_domainconfiguser {
my ($udom) = @_;	my ($udom) = @_;
Line 1934 sub get_domainconfiguser {	Line 2402 sub get_domainconfiguser {
sub retrieve_inst_usertypes {	sub retrieve_inst_usertypes {
my ($udom) = @_;	my ($udom) = @_;
my (%returnhash,@order);	my (%returnhash,@order);
my %domdefs = &Apache::lonnet::get_domain_defaults($udom);	my %domdefs = &get_domain_defaults($udom);
if ((ref($domdefs{'inststatustypes'}) eq 'HASH') &&	if ((ref($domdefs{'inststatustypes'}) eq 'HASH') &&
(ref($domdefs{'inststatusorder'}) eq 'ARRAY')) {	(ref($domdefs{'inststatusorder'}) eq 'ARRAY')) {
return ($domdefs{'inststatustypes'},$domdefs{'inststatusorder'});	return ($domdefs{'inststatustypes'},$domdefs{'inststatusorder'});
Line 1967 sub retrieve_inst_usertypes {	Line 2435 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\|login)/+[^/]-) {
if (&domain($1) ne '') {	if (&domain($1) ne '') {
return '1';	return '1';
}	}
Line 1982 sub inst_directory_query {	Line 2450 sub inst_directory_query {
my $homeserver = &domain($udom,'primary');	my $homeserver = &domain($udom,'primary');
my $outcome;	my $outcome;
if ($homeserver ne '') {	if ($homeserver ne '') {
	unless ($homeserver eq $perlvar{'lonHostID'}) {
	if ($srch->{'srchby'} eq 'email') {
	my $lcrev = &get_server_loncaparev($udom,$homeserver);
	my ($major,$minor) = ($lcrev =~ /^\'?(\d+)\.(\d+)\.[\w.\-]+\'?$/);
	if (($major eq '' && $minor eq '') \|\| ($major < 2) \|\|
	(($major == 2) && ($minor < 12))) {
	return;
	}
	}
	}
my $queryid=&reply("querysend:instdirsearch:".	my $queryid=&reply("querysend:instdirsearch:".
&escape($srch->{'srchby'}).':'.	&escape($srch->{'srchby'}).':'.
&escape($srch->{'srchterm'}).':'.	&escape($srch->{'srchterm'}).':'.
Line 2023 sub usersearch {	Line 2501 sub usersearch {
my $query = 'usersearch';	my $query = 'usersearch';
foreach my $tryserver (keys(%libserv)) {	foreach my $tryserver (keys(%libserv)) {
if (&host_domain($tryserver) eq $dom) {	if (&host_domain($tryserver) eq $dom) {
	unless ($tryserver eq $perlvar{'lonHostID'}) {
	if ($srch->{'srchby'} eq 'email') {
	my $lcrev = &get_server_loncaparev($dom,$tryserver);
	my ($major,$minor) = ($lcrev =~ /^\'?(\d+)\.(\d+)\.[\w.\-]+\'?$/);
	next if (($major eq '' && $minor eq '') \|\| ($major < 2) \|\|
	(($major == 2) && ($minor < 12)));
	}
	}
my $host=&hostname($tryserver);	my $host=&hostname($tryserver);
my $queryid=	my $queryid=
&reply("querysend:".&escape($query).':'.	&reply("querysend:".&escape($query).':'.
Line 2112 sub get_multiple_instusers {	Line 2598 sub get_multiple_instusers {
my ($udom,$users,$caller) = @_;	my ($udom,$users,$caller) = @_;
my ($outcome,$results);	my ($outcome,$results);
if (ref($users) eq 'HASH') {	if (ref($users) eq 'HASH') {
my $count = keys(%{$users});	my $count = keys(%{$users});
my $requested = &freeze_escape($users);	my $requested = &freeze_escape($users);
my $homeserver = &domain($udom,'primary');	my $homeserver = &domain($udom,'primary');
if ($homeserver ne '') {	if ($homeserver ne '') {
Line 2156 sub get_multiple_instusers {	Line 2642 sub get_multiple_instusers {
} else {	} else {
($outcome,my $userdata) = split(/=/,$response,2);	($outcome,my $userdata) = split(/=/,$response,2);
if ($outcome eq 'ok') {	if ($outcome eq 'ok') {
$results = &thaw_unescape($userdata);	$results = &thaw_unescape($userdata);
}	}
}	}
}	}
Line 2187 sub inst_rulecheck {	Line 2673 sub inst_rulecheck {
$response=&unescape(&reply('instselfcreatecheck:'.	$response=&unescape(&reply('instselfcreatecheck:'.
&escape($udom).':'.&escape($uname).	&escape($udom).':'.&escape($uname).
':'.$rulestr,$homeserver));	':'.$rulestr,$homeserver));
	} elsif ($item eq 'unamemap') {
	$response=&unescape(&reply('instunamemapcheck:'.
	&escape($udom).':'.&escape($uname).
	':'.$rulestr,$homeserver));
}	}
if ($response ne 'refused') {	if ($response ne 'refused') {
my @pairs=split(/\&/,$response);	my @pairs=split(/\&/,$response);
Line 2216 sub inst_userrules {	Line 2706 sub inst_userrules {
} elsif ($check eq 'email') {	} elsif ($check eq 'email') {
$response=&reply('instemailrules:'.&escape($udom),	$response=&reply('instemailrules:'.&escape($udom),
$homeserver);	$homeserver);
	} elsif ($check eq 'unamemap') {
	$response=&reply('unamemaprules:'.&escape($udom),
	$homeserver);
} else {	} else {
$response=&reply('instuserrules:'.&escape($udom),	$response=&reply('instuserrules:'.&escape($udom),
$homeserver);	$homeserver);
Line 2257 sub get_domain_defaults {	Line 2750 sub get_domain_defaults {
}	}
my %domdefaults;	my %domdefaults;
my %domconfig =	my %domconfig =
&Apache::lonnet::get_dom('configuration',['defaults','quotas',	&get_dom('configuration',['defaults','quotas',
'requestcourses','inststatus',	'requestcourses','inststatus',
'coursedefaults','usersessions',	'coursedefaults','usersessions',
'requestauthor','selfenrollment',	'requestauthor','authordefaults',
'coursecategories','autoenroll',	'selfenrollment','coursecategories',
'helpsettings'],$domain);	'ssl','autoenroll','trust',
my @coursetypes = ('official','unofficial','community','textbook');	'helpsettings','wafproxy',
	'ltisec','toolsec','privacy'],$domain);
	my @coursetypes = ('official','unofficial','community','textbook','placement');
if (ref($domconfig{'defaults'}) eq 'HASH') {	if (ref($domconfig{'defaults'}) eq 'HASH') {
$domdefaults{'lang_def'} = $domconfig{'defaults'}{'lang_def'};	$domdefaults{'lang_def'} = $domconfig{'defaults'}{'lang_def'};
$domdefaults{'auth_def'} = $domconfig{'defaults'}{'auth_def'};	$domdefaults{'auth_def'} = $domconfig{'defaults'}{'auth_def'};
Line 2271 sub get_domain_defaults {	Line 2766 sub get_domain_defaults {
$domdefaults{'timezone_def'} = $domconfig{'defaults'}{'timezone_def'};	$domdefaults{'timezone_def'} = $domconfig{'defaults'}{'timezone_def'};
$domdefaults{'datelocale_def'} = $domconfig{'defaults'}{'datelocale_def'};	$domdefaults{'datelocale_def'} = $domconfig{'defaults'}{'datelocale_def'};
$domdefaults{'portal_def'} = $domconfig{'defaults'}{'portal_def'};	$domdefaults{'portal_def'} = $domconfig{'defaults'}{'portal_def'};
	$domdefaults{'portal_def_email'} = $domconfig{'defaults'}{'portal_def_email'};
	$domdefaults{'portal_def_web'} = $domconfig{'defaults'}{'portal_def_web'};
$domdefaults{'intauth_cost'} = $domconfig{'defaults'}{'intauth_cost'};	$domdefaults{'intauth_cost'} = $domconfig{'defaults'}{'intauth_cost'};
$domdefaults{'intauth_switch'} = $domconfig{'defaults'}{'intauth_switch'};	$domdefaults{'intauth_switch'} = $domconfig{'defaults'}{'intauth_switch'};
$domdefaults{'intauth_check'} = $domconfig{'defaults'}{'intauth_check'};	$domdefaults{'intauth_check'} = $domconfig{'defaults'}{'intauth_check'};
	$domdefaults{'unamemap_rule'} = $domconfig{'defaults'}{'unamemap_rule'};
} else {	} else {
$domdefaults{'lang_def'} = &domain($domain,'lang_def');	$domdefaults{'lang_def'} = &domain($domain,'lang_def');
$domdefaults{'auth_def'} = &domain($domain,'auth_def');	$domdefaults{'auth_def'} = &domain($domain,'auth_def');
Line 2285 sub get_domain_defaults {	Line 2783 sub get_domain_defaults {
} else {	} else {
$domdefaults{'defaultquota'} = $domconfig{'quotas'};	$domdefaults{'defaultquota'} = $domconfig{'quotas'};
}	}
my @usertools = ('aboutme','blog','webdav','portfolio');	my @usertools = ('aboutme','blog','webdav','portfolio','portaccess');
foreach my $item (@usertools) {	foreach my $item (@usertools) {
if (ref($domconfig{'quotas'}{$item}) eq 'HASH') {	if (ref($domconfig{'quotas'}{$item}) eq 'HASH') {
$domdefaults{$item} = $domconfig{'quotas'}{$item};	$domdefaults{$item} = $domconfig{'quotas'}{$item};
Line 2296 sub get_domain_defaults {	Line 2794 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};
}	}
}	}
if (ref($domconfig{'requestauthor'}) eq 'HASH') {	if (ref($domconfig{'requestauthor'}) eq 'HASH') {
$domdefaults{'requestauthor'} = $domconfig{'requestauthor'};	$domdefaults{'requestauthor'} = $domconfig{'requestauthor'};
}	}
	if (ref($domconfig{'authordefaults'}) eq 'HASH') {
	foreach my $item ('nocodemirror','copyright','sourceavail','domcoordacc','editors') {
	if ($item eq 'editors') {
	if (ref($domconfig{'authordefaults'}{'editors'}) eq 'ARRAY') {
	$domdefaults{$item} = join(',',@{$domconfig{'authordefaults'}{'editors'}});
	}
	} else {
	$domdefaults{$item} = $domconfig{'authordefaults'}{$item};
	}
	}
	}
if (ref($domconfig{'inststatus'}) eq 'HASH') {	if (ref($domconfig{'inststatus'}) eq 'HASH') {
foreach my $item ('inststatustypes','inststatusorder','inststatusguest') {	foreach my $item ('inststatustypes','inststatusorder','inststatusguest') {
$domdefaults{$item} = $domconfig{'inststatus'}{$item};	$domdefaults{$item} = $domconfig{'inststatus'}{$item};
}	}
}	}
if (ref($domconfig{'coursedefaults'}) eq 'HASH') {	if (ref($domconfig{'coursedefaults'}) eq 'HASH') {
	$domdefaults{'canuse_pdfforms'} = $domconfig{'coursedefaults'}{'canuse_pdfforms'};
$domdefaults{'usejsme'} = $domconfig{'coursedefaults'}{'usejsme'};	$domdefaults{'usejsme'} = $domconfig{'coursedefaults'}{'usejsme'};
	$domdefaults{'inline_chem'} = $domconfig{'coursedefaults'}{'inline_chem'};
$domdefaults{'uselcmath'} = $domconfig{'coursedefaults'}{'uselcmath'};	$domdefaults{'uselcmath'} = $domconfig{'coursedefaults'}{'uselcmath'};
if (ref($domconfig{'coursedefaults'}{'postsubmit'}) eq 'HASH') {	if (ref($domconfig{'coursedefaults'}{'postsubmit'}) eq 'HASH') {
$domdefaults{'postsubmit'} = $domconfig{'coursedefaults'}{'postsubmit'}{'client'};	$domdefaults{'postsubmit'} = $domconfig{'coursedefaults'}{'postsubmit'}{'client'};
Line 2323 sub get_domain_defaults {	Line 2834 sub get_domain_defaults {
if (ref($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 (ref($domconfig{'coursedefaults'}{'coursequota'}) eq 'HASH') {
	$domdefaults{$type.'coursequota'} = $domconfig{'coursedefaults'}{'coursequota'}{$type};
	}
if ($domdefaults{'postsubmit'} eq 'on') {	if ($domdefaults{'postsubmit'} eq 'on') {
if (ref($domconfig{'coursedefaults'}{'postsubmit'}{'timeout'}) eq 'HASH') {	if (ref($domconfig{'coursedefaults'}{'postsubmit'}{'timeout'}) eq 'HASH') {
$domdefaults{$type.'postsubtimeout'} =	$domdefaults{$type.'postsubtimeout'} =
$domconfig{'coursedefaults'}{'postsubmit'}{'timeout'}{$type};	$domconfig{'coursedefaults'}{'postsubmit'}{'timeout'}{$type};
}	}
}	}
	if (ref($domconfig{'coursedefaults'}{'domexttool'}) eq 'HASH') {
	$domdefaults{$type.'domexttool'} = $domconfig{'coursedefaults'}{'domexttool'}{$type};
	} else {
	$domdefaults{$type.'domexttool'} = 1;
	}
	if (ref($domconfig{'coursedefaults'}{'exttool'}) eq 'HASH') {
	$domdefaults{$type.'exttool'} = $domconfig{'coursedefaults'}{'exttool'}{$type};
	} else {
	$domdefaults{$type.'exttool'} = 0;
	}
	if (ref($domconfig{'coursedefaults'}{'crsauthor'}) eq 'HASH') {
	$domdefaults{$type.'crsauthor'} = $domconfig{'coursedefaults'}{'crsauthor'}{$type};
	} else {
	$domdefaults{$type.'crsauthor'} = 1;
	}
	if (ref($domconfig{'coursedefaults'}{'crseditors'}) eq 'ARRAY') {
	$domdefaults{'crseditors'}=join(',',@{$domconfig{'coursedefaults'}{'crseditors'}});
	}
}	}
if (ref($domconfig{'coursedefaults'}{'canclone'}) eq 'HASH') {	if (ref($domconfig{'coursedefaults'}{'canclone'}) eq 'HASH') {
if (ref($domconfig{'coursedefaults'}{'canclone'}{'instcode'}) eq 'ARRAY') {	if (ref($domconfig{'coursedefaults'}{'canclone'}{'instcode'}) eq 'ARRAY') {
Line 2343 sub get_domain_defaults {	Line 2875 sub get_domain_defaults {
if ($domconfig{'coursedefaults'}{'texengine'}) {	if ($domconfig{'coursedefaults'}{'texengine'}) {
$domdefaults{'texengine'} = $domconfig{'coursedefaults'}{'texengine'};	$domdefaults{'texengine'} = $domconfig{'coursedefaults'}{'texengine'};
}	}
	if (exists($domconfig{'coursedefaults'}{'ltiauth'})) {
	$domdefaults{'crsltiauth'} = $domconfig{'coursedefaults'}{'ltiauth'};
	}
}	}
if (ref($domconfig{'usersessions'}) eq 'HASH') {	if (ref($domconfig{'usersessions'}) eq 'HASH') {
if (ref($domconfig{'usersessions'}{'remote'}) eq 'HASH') {	if (ref($domconfig{'usersessions'}{'remote'}) eq 'HASH') {
Line 2354 sub get_domain_defaults {	Line 2889 sub get_domain_defaults {
if (ref($domconfig{'usersessions'}{'offloadnow'}) eq 'HASH') {	if (ref($domconfig{'usersessions'}{'offloadnow'}) eq 'HASH') {
$domdefaults{'offloadnow'} = $domconfig{'usersessions'}{'offloadnow'};	$domdefaults{'offloadnow'} = $domconfig{'usersessions'}{'offloadnow'};
}	}
	if (ref($domconfig{'usersessions'}{'offloadoth'}) eq 'HASH') {
	$domdefaults{'offloadoth'} = $domconfig{'usersessions'}{'offloadoth'};
	}
}	}
if (ref($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 2393 sub get_domain_defaults {	Line 2931 sub get_domain_defaults {
$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'}{'connto'}) eq 'HASH') {
	$domdefaults{'connect'} = $domconfig{'ssl'}{'connto'};
	}
	if (ref($domconfig{'ssl'}{'connfrom'}) eq 'HASH') {
	$domdefaults{'connect'} = $domconfig{'ssl'}{'connfrom'};
	}
	}
	if (ref($domconfig{'trust'}) eq 'HASH') {
	my @prefixes = qw(content shared enroll othcoau coaurem domroles catalog reqcrs msg);
	foreach my $prefix (@prefixes) {
	if (ref($domconfig{'trust'}{$prefix}) eq 'HASH') {
	$domdefaults{'trust'.$prefix} = $domconfig{'trust'}{$prefix};
	}
	}
	}
if (ref($domconfig{'autoenroll'}) eq 'HASH') {	if (ref($domconfig{'autoenroll'}) eq 'HASH') {
$domdefaults{'autofailsafe'} = $domconfig{'autoenroll'}{'autofailsafe'};	$domdefaults{'autofailsafe'} = $domconfig{'autoenroll'}{'autofailsafe'};
	$domdefaults{'failsafe'} = $domconfig{'autoenroll'}{'failsafe'};
}	}
if (ref($domconfig{'helpsettings'}) eq 'HASH') {	if (ref($domconfig{'helpsettings'}) eq 'HASH') {
$domdefaults{'submitbugs'} = $domconfig{'helpsettings'}{'submitbugs'};	$domdefaults{'submitbugs'} = $domconfig{'helpsettings'}{'submitbugs'};
Line 2402 sub get_domain_defaults {	Line 2960 sub get_domain_defaults {
$domdefaults{'adhocroles'} = $domconfig{'helpsettings'}{'adhoc'};	$domdefaults{'adhocroles'} = $domconfig{'helpsettings'}{'adhoc'};
}	}
}	}
	if (ref($domconfig{'wafproxy'}) eq 'HASH') {
	foreach my $item ('ipheader','trusted','vpnint','vpnext','sslopt') {
	if ($domconfig{'wafproxy'}{$item}) {
	$domdefaults{'waf_'.$item} = $domconfig{'wafproxy'}{$item};
	}
	}
	}
	if (ref($domconfig{'ltisec'}) eq 'HASH') {
	if (ref($domconfig{'ltisec'}{'encrypt'}) eq 'HASH') {
	$domdefaults{'linkprotenc_crs'} = $domconfig{'ltisec'}{'encrypt'}{'crs'};
	$domdefaults{'linkprotenc_dom'} = $domconfig{'ltisec'}{'encrypt'}{'dom'};
	$domdefaults{'ltienc_consumers'} = $domconfig{'ltisec'}{'encrypt'}{'consumers'};
	}
	if (ref($domconfig{'ltisec'}{'private'}) eq 'HASH') {
	if (ref($domconfig{'ltisec'}{'private'}{'keys'}) eq 'ARRAY') {
	$domdefaults{'ltiprivhosts'} = $domconfig{'ltisec'}{'private'}{'keys'};
	}
	}
	if (ref($domconfig{'ltisec'}{'suggested'}) eq 'HASH') {
	my %suggestions = %{$domconfig{'ltisec'}{'suggested'}};
	foreach my $item (keys(%{$domconfig{'ltisec'}{'suggested'}})) {
	unless (ref($domconfig{'ltisec'}{'suggested'}{$item}) eq 'HASH') {
	delete($suggestions{$item});
	}
	}
	if (keys(%suggestions)) {
	$domdefaults{'linkprotsuggested'} = \%suggestions;
	}
	}
	}
	if (ref($domconfig{'toolsec'}) eq 'HASH') {
	if (ref($domconfig{'toolsec'}{'encrypt'}) eq 'HASH') {
	$domdefaults{'toolenc_crs'} = $domconfig{'toolsec'}{'encrypt'}{'crs'};
	$domdefaults{'toolenc_dom'} = $domconfig{'toolsec'}{'encrypt'}{'dom'};
	}
	if (ref($domconfig{'toolsec'}{'private'}) eq 'HASH') {
	if (ref($domconfig{'toolsec'}{'private'}{'keys'}) eq 'ARRAY') {
	$domdefaults{'toolprivhosts'} = $domconfig{'toolsec'}{'private'}{'keys'};
	}
	}
	}
	if (ref($domconfig{'privacy'}) eq 'HASH') {
	if (ref($domconfig{'privacy'}{'approval'}) eq 'HASH') {
	foreach my $domtype ('instdom','extdom') {
	if (ref($domconfig{'privacy'}{'approval'}{$domtype}) eq 'HASH') {
	foreach my $roletype ('domain','author','course','community') {
	if ($domconfig{'privacy'}{'approval'}{$domtype}{$roletype} eq 'user') {
	$domdefaults{'userapprovals'} = 1;
	last;
	}
	}
	}
	last if ($domdefaults{'userapprovals'});
	}
	}
	}
&do_cache_new('domdefaults',$domain,\%domdefaults,$cachetime);	&do_cache_new('domdefaults',$domain,\%domdefaults,$cachetime);
return %domdefaults;	return %domdefaults;
}	}
Line 2421 sub get_dom_cats {	Line 3035 sub get_dom_cats {
} else {	} else {
$cats = {};	$cats = {};
}	}
&Apache::lonnet::do_cache_new('cats',$dom,$cats,3600);	&do_cache_new('cats',$dom,$cats,3600);
}	}
return $cats;	return $cats;
}	}
Line 2438 sub get_dom_instcats {	Line 3052 sub get_dom_instcats {
if (&auto_instcode_format($caller,$dom,\%coursecodes,\%codes,	if (&auto_instcode_format($caller,$dom,\%coursecodes,\%codes,
\@codetitles,\%cat_titles,\%cat_order) eq 'ok') {	\@codetitles,\%cat_titles,\%cat_order) eq 'ok') {
$instcats = {	$instcats = {
	totcodes => $totcodes,
codes => \%codes,	codes => \%codes,
codetitles => \@codetitles,	codetitles => \@codetitles,
cat_titles => \%cat_titles,	cat_titles => \%cat_titles,
Line 2465 sub retrieve_instcodes {	Line 3080 sub retrieve_instcodes {
return $totcodes;	return $totcodes;
}	}

	sub course_portal_url {
	my ($cnum,$cdom,$r) = @_;
	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 {
	my $alias = &use_proxy_alias($r,$chome);
	$hostname = $alias if ($alias ne '');
	$firsturl = $protocol.'://'.$hostname;
	}
	return $firsturl;
	}

	sub url_prefix {
	my ($r,$dom,$home,$context) = @_;
	my $prefix;
	my %domdefs = &get_domain_defaults($dom);
	if ($domdefs{'portal_def'} && $domdefs{'portal_def_'.$context}) {
	if ($domdefs{'portal_def'} =~ m{^(https?://[^/]+)}) {
	$prefix = $1;
	}
	}
	if ($prefix eq '') {
	my $hostname = &hostname($home);
	my $protocol = $protocol{$home};
	$protocol = 'http' if ($protocol{$home} ne 'https');
	my $alias = &use_proxy_alias($r,$home);
	$hostname = $alias if ($alias ne '');
	$prefix = $protocol.'://'.$hostname;
	}
	return $prefix;
	}

	# --------------------------------------------- Get domain config for passwords

	sub get_passwdconf {
	my ($dom) = @_;
	my (%passwdconf,$gotconf,$lookup);
	my ($result,$cached)=&is_cached_new('passwdconf',$dom);
	if (defined($cached)) {
	if (ref($result) eq 'HASH') {
	%passwdconf = %{$result};
	$gotconf = 1;
	}
	}
	unless ($gotconf) {
	my %domconfig = &get_dom('configuration',['passwords'],$dom);
	if (ref($domconfig{'passwords'}) eq 'HASH') {
	%passwdconf = %{$domconfig{'passwords'}};
	}
	my $cachetime = 246060;
	&do_cache_new('passwdconf',$dom,\%passwdconf,$cachetime);
	}
	return %passwdconf;
	}

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

sub assign_access_key {	sub assign_access_key {
Line 2613 sub courseid_to_courseurl {	Line 3289 sub courseid_to_courseurl {
return "/$cdom/$cnum";	return "/$cdom/$cnum";
}	}

my %courseinfo=&Apache::lonnet::coursedescription($courseid);	my %courseinfo=&coursedescription($courseid);
if (exists($courseinfo{'num'})) {	if (exists($courseinfo{'num'})) {
return "/$courseinfo{'domain'}/$courseinfo{'num'}";	return "/$courseinfo{'domain'}/$courseinfo{'num'}";
}	}
Line 2710 sub devalidate_cache_new {	Line 3386 sub devalidate_cache_new {

sub is_cached_new {	sub is_cached_new {
my ($name,$id,$debug) = @_;	my ($name,$id,$debug) = @_;
my $remembered_id=$name.':'.$id; # this is to avoid make_key (which is slow) for	my $remembered_id=$name.':'.$id; # this is to avoid make_key (which is slow) whenever possible
# keys in %remembered hash, which persists for
# duration of request (no restriction on key length).
if (exists($remembered{$remembered_id})) {	if (exists($remembered{$remembered_id})) {
if ($debug) { &Apache::lonnet::logthis("Early return $remembered_id of $remembered{$remembered_id} "); }	if ($debug) { &Apache::lonnet::logthis("Early return $remembered_id of $remembered{$remembered_id} "); }
$accessed{$remembered_id}=[&gettimeofday()];	$accessed{$remembered_id}=[&gettimeofday()];
Line 2813 sub userenvironment {	Line 3487 sub userenvironment {
# ---------------------------------------------------------- Get a studentphoto	# ---------------------------------------------------------- Get a studentphoto
sub studentphoto {	sub studentphoto {
my ($udom,$unam,$ext) = @_;	my ($udom,$unam,$ext) = @_;
my $home=&Apache::lonnet::homeserver($unam,$udom);	my $home=&homeserver($unam,$udom);
if (defined($env{'request.course.id'})) {	if (defined($env{'request.course.id'})) {
if ($env{'course.'.$env{'request.course.id'}.'.internal.showphoto'}) {	if ($env{'course.'.$env{'request.course.id'}.'.internal.showphoto'}) {
if ($udom eq $env{'course.'.$env{'request.course.id'}.'.domain'}) {	if ($udom eq $env{'course.'.$env{'request.course.id'}.'.domain'}) {
return(&retrievestudentphoto($udom,$unam,$ext));	return(&retrievestudentphoto($udom,$unam,$ext));
} else {	} else {
my ($result,$perm_reqd)=	my ($result,$perm_reqd)=
&Apache::lonnet::auto_photo_permission($unam,$udom);	&auto_photo_permission($unam,$udom);
if ($result eq 'ok') {	if ($result eq 'ok') {
if (!($perm_reqd eq 'yes')) {	if (!($perm_reqd eq 'yes')) {
return(&retrievestudentphoto($udom,$unam,$ext));	return(&retrievestudentphoto($udom,$unam,$ext));
Line 2830 sub studentphoto {	Line 3504 sub studentphoto {
}	}
} else {	} else {
my ($result,$perm_reqd) =	my ($result,$perm_reqd) =
&Apache::lonnet::auto_photo_permission($unam,$udom);	&auto_photo_permission($unam,$udom);
if ($result eq 'ok') {	if ($result eq 'ok') {
if (!($perm_reqd eq 'yes')) {	if (!($perm_reqd eq 'yes')) {
return(&retrievestudentphoto($udom,$unam,$ext));	return(&retrievestudentphoto($udom,$unam,$ext));
Line 2842 sub studentphoto {	Line 3516 sub studentphoto {

sub retrievestudentphoto {	sub retrievestudentphoto {
my ($udom,$unam,$ext,$type) = @_;	my ($udom,$unam,$ext,$type) = @_;
my $home=&Apache::lonnet::homeserver($unam,$udom);	my $home=&homeserver($unam,$udom);
my $ret=&Apache::lonnet::reply("studentphoto:$udom:$unam:$ext:$type",$home);	my $ret=&reply("studentphoto:$udom:$unam:$ext:$type",$home);
if ($ret eq 'ok') {	if ($ret eq 'ok') {
my $url="/uploaded/$udom/$unam/internal/studentphoto.$ext";	my $url="/uploaded/$udom/$unam/internal/studentphoto.$ext";
if ($type eq 'thumbnail') {	if ($type eq 'thumbnail') {
$url="/uploaded/$udom/$unam/internal/studentphoto_tn.$ext";	$url="/uploaded/$udom/$unam/internal/studentphoto_tn.$ext";
}	}
my $tokenurl=&Apache::lonnet::tokenwrapper($url);	my $tokenurl=&tokenwrapper($url);
return $tokenurl;	return $tokenurl;
} else {	} else {
if ($type eq 'thumbnail') {	if ($type eq 'thumbnail') {
Line 2974 sub repcopy {	Line 3648 sub repcopy {
mkdir($path,0777);	mkdir($path,0777);
}	}
}	}
my $ua=new LWP::UserAgent;
my $request=new HTTP::Request('GET',"$remoteurl");	my $request=new HTTP::Request('GET',"$remoteurl");
my $response=$ua->request($request,$transname);	my $response;
	if ($remoteurl =~ m{/raw/}) {
	$response=&LONCAPA::LWPReq::makerequest($home,$request,$transname,\%perlvar,'',0,1);
	} else {
	$response=&LONCAPA::LWPReq::makerequest($home,$request,$transname,\%perlvar,'',1);
	}
if ($response->is_error()) {	if ($response->is_error()) {
unlink($transname);	unlink($transname);
my $message=$response->status_line;	my $message=$response->status_line;
Line 2986 sub repcopy {	Line 3664 sub repcopy {
} else {	} else {
if ($remoteurl!~/\.meta$/) {	if ($remoteurl!~/\.meta$/) {
my $mrequest=new HTTP::Request('GET',$remoteurl.'.meta');	my $mrequest=new HTTP::Request('GET',$remoteurl.'.meta');
my $mresponse=$ua->request($mrequest,$filename.'.meta');	my $mresponse;
	if ($remoteurl =~ m{/raw/}) {
	$mresponse = &LONCAPA::LWPReq::makerequest($home,$mrequest,$filename.'.meta',\%perlvar,'',0,1);
	} else {
	$mresponse = &LONCAPA::LWPReq::makerequest($home,$mrequest,$filename.'.meta',\%perlvar,'',1);
	}
if ($mresponse->is_error()) {	if ($mresponse->is_error()) {
unlink($filename.'.meta');	unlink($filename.'.meta');
&logthis(	&logthis(
Line 3000 sub repcopy {	Line 3683 sub repcopy {
}	}
}	}

	# ------------------------------------------------- Unsubscribe from a resource

	sub unsubscribe {
	my ($fname) = @_;
	my $answer;
	if ($fname=~/\/(aboutme\|syllabus\|bulletinboard\|smppg)$/) { return $answer; }
	$fname=~s/[\n\r]//g;
	my $author=$fname;
	$author=~s/\/home\/httpd\/html\/res\/([^\/])\/([^\/]).*/$1\/$2/;
	my ($udom,$uname)=split(/\//,$author);
	my $home=homeserver($uname,$udom);
	if ($home eq 'no_host') {
	$answer = 'no_host';
	} elsif (grep { $_ eq $home } &current_machine_ids()) {
	$answer = 'home';
	} else {
	my $defdom = $perlvar{'lonDefDomain'};
	if (&will_trust('content',$defdom,$udom)) {
	$answer = reply("unsub:$fname",$home);
	} else {
	$answer = 'untrusted';
	}
	}
	return $answer;
	}

# ------------------------------------------------ Get server side include body	# ------------------------------------------------ Get server side include body
sub ssi_body {	sub ssi_body {
my ($filelink,%form)=@_;	my ($filelink,%form)=@_;
Line 3028 sub ssi_body {	Line 3737 sub ssi_body {
# --------------------------------------------------------- Server Side Include	# --------------------------------------------------------- Server Side Include

sub absolute_url {	sub absolute_url {
my ($host_name) = @_;	my ($host_name,$unalias,$keep_proto) = @_;
my $protocol = ($ENV{'SERVER_PORT'} == 443?'https://':'http://');	my $protocol = ($ENV{'SERVER_PORT'} == 443?'https://':'http://');
if ($host_name eq '') {	if ($host_name eq '') {
$host_name = $ENV{'SERVER_NAME'};	$host_name = $ENV{'SERVER_NAME'};
}	}
	if ($unalias) {
	my $alias = &get_proxy_alias();
	if ($alias eq $host_name) {
	my $lonhost = $perlvar{'lonHostID'};
	my $hostname = &hostname($lonhost);
	my $lcproto;
	if (($keep_proto) \|\| ($hostname eq '')) {
	$lcproto = $protocol;
	} else {
	$lcproto = $protocol{$lonhost};
	$lcproto = 'http' if ($lcproto ne 'https');
	$lcproto .= '://';
	}
	unless ($hostname eq '') {
	return $lcproto.$hostname;
	}
	}
	}
return $protocol.$host_name;	return $protocol.$host_name;
}	}

Line 3049 sub absolute_url {	Line 3776 sub absolute_url {
sub ssi {	sub ssi {

my ($fn,%form)=@_;	my ($fn,%form)=@_;
my ($request,$response);	my ($host,$request,$response);
	$host = &absolute_url('',1);

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

$request->header(Cookie => $ENV{'HTTP_COOKIE'});	$request->header(Cookie => $ENV{'HTTP_COOKIE'});
	my $lonhost = $perlvar{'lonHostID'};
	my $islocal;
if (($env{'request.course.id'}) &&	if (($env{'request.course.id'}) &&
($form{'grade_courseid'} eq $env{'request.course.id'}) &&	($form{'grade_courseid'} eq $env{'request.course.id'}) &&
($form{'grade_username'} ne '') && ($form{'grade_domain'} ne '') &&	($form{'grade_username'} ne '') && ($form{'grade_domain'} ne '') &&
($form{'grade_symb'} ne '') &&	($form{'grade_symb'} ne '') &&
(&Apache::lonnet::allowed('mgr',$env{'request.course.id'}.	(&allowed('mgr',$env{'request.course.id'}.
($env{'request.course.sec'}?'/'.$env{'request.course.sec'}:'')))) {	($env{'request.course.sec'}?'/'.$env{'request.course.sec'}:'')))) {
if (LWP::UserAgent->VERSION >= 5.834) {	$islocal = 1;
my $ua=new LWP::UserAgent;
$ua->local_address('127.0.0.1');
$response = $ua->request($request);
} else {
{
require LWP::Protocol::http;
local @LWP::Protocol::http::EXTRA_SOCK_OPTS = (LocalAddr => '127.0.0.1');
my $ua=new LWP::UserAgent;
$response = $ua->request($request);
@LWP::Protocol::http::EXTRA_SOCK_OPTS = ();
}
}
} else {
my $ua=new LWP::UserAgent;
$response = $ua->request($request);
}	}
	$response= &LONCAPA::LWPReq::makerequest($lonhost,$request,'',\%perlvar,
	'','','',$islocal);

if (wantarray) {	if (wantarray) {
return ($response->content, $response);	return ($response->content, $response);
} else {	} else {
Line 3099 sub ssi {	Line 3816 sub ssi {

sub externalssi {	sub externalssi {
my ($url)=@_;	my ($url)=@_;
my $ua=new LWP::UserAgent;
my $request=new HTTP::Request('GET',$url);	my $request=new HTTP::Request('GET',$url);
my $response=$ua->request($request);	my $response = &LONCAPA::LWPReq::makerequest('',$request,'',\%perlvar);
if (wantarray) {	if (wantarray) {
return ($response->content, $response);	return ($response->content, $response);
} else {	} else {
Line 3109 sub externalssi {	Line 3825 sub externalssi {
}	}
}	}

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

Line 3126 sub remove_stale_resfile {	Line 3843 sub remove_stale_resfile {
(grep { $_ eq $homeserver } &current_machine_ids())) {	(grep { $_ eq $homeserver } &current_machine_ids())) {
my $fname = &filelocation('',$url);	my $fname = &filelocation('',$url);
if (-e $fname) {	if (-e $fname) {
my $ua=new LWP::UserAgent;
$ua->timeout(5);
my $protocol = $protocol{$homeserver};
$protocol = 'http' if ($protocol ne 'https');
my $hostname = &hostname($homeserver);	my $hostname = &hostname($homeserver);
if ($hostname) {	if ($hostname) {
my $uri = $protocol.'://'.$hostname.'/raw/'.&declutter($url);	my $protocol = $protocol{$homeserver};
my $request=new HTTP::Request('HEAD',$uri);	$protocol = 'http' if ($protocol ne 'https');
my $response=$ua->request($request);	my $uri = &declutter($url);
	my $request=new HTTP::Request('HEAD',$protocol.'://'.$hostname.'/raw/'.$uri);
	my $response = &LONCAPA::LWPReq::makerequest($homeserver,$request,'',\%perlvar,5,0,1);
if ($response->is_success()) {	if ($response->is_success()) {
my $remmodtime = &HTTP::Date::str2time( $response->header('Last-modified') );	my $remmodtime = &HTTP::Date::str2time( $response->header('Last-modified') );
my $locmodtime = (stat($fname))[9];	my $locmodtime = (stat($fname))[9];
Line 3158 sub remove_stale_resfile {	Line 3873 sub remove_stale_resfile {
$stale = 1;	$stale = 1;
}	}
if ($stale) {	if ($stale) {
unlink($fname);	if (unlink($fname)) {
if ($uri!~/\.meta$/) {	if ($uri!~/\.meta$/) {
unlink($fname.'.meta');	if (-e $fname.'.meta') {
	unlink($fname.'.meta');
	}
	}
	my $unsubresult = &unsubscribe($fname);
	unless ($unsubresult eq 'ok') {
	&logthis("no unsub of $fname from $homeserver, reason: $unsubresult");
	}
	$removed = 1;
}	}
&reply("unsub:$fname",$homeserver);
$removed = 1;
}	}
}	}
}	}
Line 3191 sub allowuploaded {	Line 3912 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 3199 sub allowuploaded {	Line 3920 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 3230 sub can_edit_resource {	Line 3951 sub can_edit_resource {
}	}
}	}

	#
	# For /adm/viewcoauthors can only edit if author or co-author who is manager.
	#

	if (($resurl eq '/adm/viewcoauthors') && ($cnum ne '') && ($cdom ne '')) {
	if (((&allowed('cca',"$cdom/$cnum")) \|\|
	(&allowed('caa',"$cdom/$cnum"))) \|\|
	((&allowed('vca',"$cdom/$cnum") \|\|
	&allowed('vaa',"$cdom/$cnum")) &&
	($env{"environment.internal.manager./$cdom/$cnum"}))) {
	$home = $env{'user.home'};
	$cfile = $resurl;
	if ($env{'form.forceedit'}) {
	$forceview = 1;
	} else {
	$forceedit = 1;
	}
	return ($cfile,$home,$switchserver,$forceedit,$forceview);
	} else {
	return;
	}
	}

if ($env{'request.course.id'}) {	if ($env{'request.course.id'}) {
my $crsedit = &Apache::lonnet::allowed('mdc',$env{'request.course.id'});	my $crsedit = &allowed('mdc',$env{'request.course.id'});
if ($group ne '') {	if ($group ne '') {
# if this is a group homepage or group bulletin board, check group privs	# if this is a group homepage or group bulletin board, check group privs
my $allowed = 0;	my $allowed = 0;
Line 3260 sub can_edit_resource {	Line 4004 sub can_edit_resource {
}	}
} else {	} else {
if ($resurl =~ m{^/?adm/viewclasslist$}) {	if ($resurl =~ m{^/?adm/viewclasslist$}) {
unless (&Apache::lonnet::allowed('opa',$env{'request.course.id'})) {	unless (&allowed('opa',$env{'request.course.id'})) {
return;	return;
}	}
} elsif (!$crsedit) {	} elsif (!$crsedit) {
	if ($env{'request.role'} =~ m{^st\./$cdom/$cnum}) {
#	#
# No edit allowed where CC has switched to student role.	# No edit allowed where CC has switched to student role.
#	#
return;	return;
	} elsif (($resurl !~ m{^/res/$match_domain/$match_username/}) \|\|
	($resurl =~ m{^/res/lib/templates/})) {
	return;
	}
}	}
}	}
}	}
Line 3313 sub can_edit_resource {	Line 4062 sub can_edit_resource {
$forceedit = 1;	$forceedit = 1;
}	}
$cfile = $resurl;	$cfile = $resurl;
	} elsif (($resurl =~ m{^/ext/}) && ($symb ne '')) {
	my ($map,$id,$res) = &decode_symb($symb);
	if ($map =~ /\.page$/) {
	$incourse = 1;
	if ($env{'form.forceedit'}) {
	$forceview = 1;
	$cfile = $map;
	} else {
	$forceedit = 1;
	$cfile = '/adm/wrapper'.$resurl;
	}
	}
	} elsif ($resurl =~ m{^/adm/wrapper/adm/$cdom/$cnum/\d+/ext\.tool$}) {
	$incourse = 1;
	if ($env{'form.forceedit'}) {
	$forceview = 1;
	} else {
	$forceedit = 1;
	}
	$cfile = $resurl;
} elsif ($resurl =~ m{^/?adm/viewclasslist$}) {	} elsif ($resurl =~ m{^/?adm/viewclasslist$}) {
$incourse = 1;	$incourse = 1;
if ($env{'form.forceedit'}) {	if ($env{'form.forceedit'}) {
Line 3324 sub can_edit_resource {	Line 4093 sub can_edit_resource {
}	}
} elsif ($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 = $template;
}	}
} elsif (($resurl =~ m{^/adm/wrapper/ext/}) && ($env{'form.folderpath'} =~ /^supplemental/)) {	} elsif (($resurl =~ m{^/adm/wrapper/ext/}) && ($env{'form.folderpath'} =~ /^supplemental/)) {
$incourse = 1;	$incourse = 1;
if ($env{'form.forceedit'}) {	if ($env{'form.forceedit'}) {
$forceview = 1;	$forceview = 1;
} else {	} else {
$forceedit = 1;	$forceedit = 1;
}	}
$cfile = $resurl;	$cfile = $resurl;
	} elsif (($resurl =~ m{^/adm/wrapper/adm/$cdom/$cnum/\d+/ext\.tool$}) && ($env{'form.folderpath'} =~ /^supplemental/)) {
	$incourse = 1;
	if ($env{'form.forceedit'}) {
	$forceview = 1;
	} else {
	$forceedit = 1;
	}
	$cfile = $resurl;
} elsif (($resurl eq '/adm/extresedit') && ($symb \|\| $env{'form.folderpath'})) {	} elsif (($resurl eq '/adm/extresedit') && ($symb \|\| $env{'form.folderpath'})) {
$incourse = 1;	$incourse = 1;
$forceview = 1;	$forceview = 1;
Line 3346 sub can_edit_resource {	Line 4123 sub can_edit_resource {
$cfile = &clutter($res);	$cfile = &clutter($res);
} else {	} else {
$cfile = $env{'form.suppurl'};	$cfile = $env{'form.suppurl'};
$cfile =~ s{^http://}{};	my $escfile = &unescape($cfile);
$cfile = '/adm/wrapper/ext/'.$cfile;	if ($escfile =~ m{^/adm/$cdom/$cnum/\d+/ext\.tool$}) {
	$cfile = '/adm/wrapper'.$escfile;
	} else {
	$escfile =~ s{^http://}{};
	$cfile = &escape("/adm/wrapper/ext/$escfile");
	}
}	}
} elsif ($resurl =~ m{^/?adm/viewclasslist$}) {	} elsif ($resurl =~ m{^/?adm/viewclasslist$}) {
if ($env{'form.forceedit'}) {	if ($env{'form.forceedit'}) {
Line 3371 sub can_edit_resource {	Line 4153 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$/,@ids)) {
Line 3398 sub in_course {	Line 4180 sub in_course {
if ($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 3594 sub clean_filename {	Line 4376 sub clean_filename {
# Replace all .\d. sequences with _\d. so they no longer look like version	# Replace all .\d. sequences with _\d. so they no longer look like version
# numbers	# numbers
$fname=~s/\.(\d+)(?=\.)/_$1/g;	$fname=~s/\.(\d+)(?=\.)/_$1/g;
	# Replace three or more adjacent underscores with one for consistency
	# with loncfile::filename_check() so complete url can be extracted by
	# lonnet::decode_symb()
	$fname=~s/_{3,}/_/g;
return $fname;	return $fname;
}	}

Line 3639 sub resizeImage {	Line 4425 sub resizeImage {
# input: $formname - the contents of the file are in $env{"form.$formname"}	# input: $formname - the contents of the file are in $env{"form.$formname"}
# the desired filename is in $env{"form.$formname.filename"}	# the desired filename is in $env{"form.$formname.filename"}
# $context - possible values: coursedoc, existingfile, overwrite,	# $context - possible values: coursedoc, existingfile, overwrite,
# canceloverwrite, scantron or ''.	# canceloverwrite, scantron, toollogo or ''.
# if 'coursedoc': upload to the current course	# if 'coursedoc': upload to the current course
# if 'existingfile': write file to tmp/overwrites directory	# if 'existingfile': write file to tmp/overwrites directory
# if 'canceloverwrite': delete file written to tmp/overwrites directory	# if 'canceloverwrite': delete file written to tmp/overwrites directory
Line 3647 sub resizeImage {	Line 4433 sub resizeImage {
# $subdir - directory in userfile to store the file into	# $subdir - directory in userfile to store the file into
# $parser - instruction to parse file for objects ($parser = parse) or	# $parser - instruction to parse file for objects ($parser = parse) or
# if context is 'scantron', $parser is hashref of csv column mapping	# if context is 'scantron', $parser is hashref of csv column mapping
# (e.g.,{ PaperID => 0, LastName => 1, FirstName => 2, ID => 3,	# (e.g.,{ PaperID => 0, LastName => 1, FirstName => 2, ID => 3,
# Section => 4, CODE => 5, FirstQuestion => 9 }).	# Section => 4, CODE => 5, FirstQuestion => 9 }).
# $allfiles - reference to hash for embedded objects	# $allfiles - reference to hash for embedded objects
# $codebase - reference to hash for codebase of java objects	# $codebase - reference to hash for codebase of java objects
# $desuname - username for permanent storage of uploaded file	# $destuname - username for permanent storage of uploaded file
# $dsetudom - domain for permanaent storage of uploaded file	# $destudom - domain for permanaent storage of uploaded file
# $thumbwidth - width (pixels) of thumbnail to make for uploaded image	# $thumbwidth - width (pixels) of thumbnail to make for uploaded image
# $thumbheight - height (pixels) of thumbnail to make for uploaded image	# $thumbheight - height (pixels) of thumbnail to make for uploaded image
# $resizewidth - width (pixels) to which to resize uploaded image	# $resizewidth - width (pixels) to which to resize uploaded image
Line 3697 sub userfileupload {	Line 4483 sub userfileupload {
} else {	} else {
$docudom = $env{'user.domain'};	$docudom = $env{'user.domain'};
}	}
if ($destuname =~ /^$match_username$/) {	if ($destuname =~ /^$match_username$/) {
$docuname = $destuname;	$docuname = $destuname;
} else {	} else {
$docuname = $env{'user.name'};	$docuname = $env{'user.name'};
Line 3862 sub finishuserfileupload {	Line 4648 sub finishuserfileupload {
if (($thumbwidth =~ /^\d+$/) && ($thumbheight =~ /^\d+$/)) {	if (($thumbwidth =~ /^\d+$/) && ($thumbheight =~ /^\d+$/)) {
my $input = $filepath.'/'.$file;	my $input = $filepath.'/'.$file;
my $output = $filepath.'/'.'tn-'.$file;	my $output = $filepath.'/'.'tn-'.$file;
	my $makethumb;
my $thumbsize = $thumbwidth.'x'.$thumbheight;	my $thumbsize = $thumbwidth.'x'.$thumbheight;
my @args = ('convert','-sample',$thumbsize,$input,$output);	if ($context eq 'toollogo') {
system({$args[0]} @args);	my ($fullwidth,$fullheight) = &check_dimensions($input);
if (-e $filepath.'/'.'tn-'.$file) {	if ($fullwidth ne '' && $fullheight ne '') {
$fetchthumb = 1;	if ($fullwidth > $thumbwidth && $fullheight > $thumbheight) {
	$makethumb = 1;
	}
	}
	} else {
	$makethumb = 1;
	}
	if ($makethumb) {
	my @args = ('convert','-sample',$thumbsize,$input,$output);
	system({$args[0]} @args);
	if (-e $filepath.'/'.'tn-'.$file) {
	$fetchthumb = 1;
	}
}	}
}	}

Line 3923 sub extract_embedded_items {	Line 4722 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 4098 sub embedded_dependency {	Line 4897 sub embedded_dependency {
return;	return;
}	}

	sub check_dimensions {
	my ($inputfile) = @_;
	my ($fullwidth,$fullheight);
	if (($inputfile =~ m\|^[/\w.\-]+$\|) && (-e $inputfile)) {
	my $mm = new File::MMagic;
	my $mime_type = $mm->checktype_filename($inputfile);
	if ($mime_type =~ m{^image/}) {
	if (open(PIPE,"identify $inputfile 2>&1 \|")) {
	my $imageinfo = <PIPE>;
	if (!close(PIPE)) {
	&Apache::lonnet::logthis("Failed to close PIPE opened to retrieve image information for $inputfile");
	}
	chomp($imageinfo);
	my ($fullsize) =
	($imageinfo =~ /^\Q$inputfile\E\s+\w+\s+(\d+x\d+)/);
	if ($fullsize) {
	($fullwidth,$fullheight) = split(/x/,$fullsize);
	}
	}
	}
	}
	return ($fullwidth,$fullheight);
	}

sub bubblesheet_converter {	sub bubblesheet_converter {
my ($cdom,$fullpath,$config,$format) = @_;	my ($cdom,$fullpath,$config,$format) = @_;
if ((&domain($cdom) ne '') &&	if ((&domain($cdom) ne '') &&
($fullpath =~ m{^\Q$perlvar{'lonDocRoot'}/userfiles/$cdom/\E$match_courseid/scantron_orig}) &&	($fullpath =~ m{^\Q$perlvar{'lonDocRoot'}/userfiles/$cdom/\E$match_courseid/scantron_orig}) &&
(-e $fullpath) && (ref($config) eq 'HASH') && ($format ne '')) {	(-e $fullpath) && (ref($config) eq 'HASH') && ($format ne '')) {
my (%csvcols,%csvoptions);	my (%csvcols,%csvoptions);
if (ref($config->{'fields'}) eq 'HASH') {	if (ref($config->{'fields'}) eq 'HASH') {
%csvcols = %{$config->{'fields'}};	%csvcols = %{$config->{'fields'}};
}	}
if (ref($config->{'options'}) eq 'HASH') {	if (ref($config->{'options'}) eq 'HASH') {
Line 4151 sub bubblesheet_converter {	Line 4974 sub bubblesheet_converter {
next if (($num == 1) && ($csvoptions{'hdr'} == 1));	next if (($num == 1) && ($csvoptions{'hdr'} == 1));
$line =~ s{[\r\n]+$}{};	$line =~ s{[\r\n]+$}{};
my %found;	my %found;
my @values = split(/,/,$line);	my @values = split(/,/,$line,-1);
my ($qstart,$record);	my ($qstart,$record);
for (my $i=0; $i<@values; $i++) {	for (my $i=0; $i<@values; $i++) {
if ((($qstart ne '') && ($i > $qstart)) \|\|	if ((($qstart ne '') && ($i > $qstart)) \|\|
Line 4334 sub get_scantronformat_file {	Line 5157 sub get_scantronformat_file {
close($fh);	close($fh);
}	}
}	}
	chomp(@lines);
}	}
return @lines;	return @lines;
}	}
Line 4455 sub flushcourselogs {	Line 5279 sub flushcourselogs {
if (! defined($dom) \|\| $dom eq '' \|\|	if (! defined($dom) \|\| $dom eq '' \|\|
! defined($name) \|\| $name eq '') {	! defined($name) \|\| $name eq '') {
my $cid = $env{'request.course.id'};	my $cid = $env{'request.course.id'};
	#
	# FIXME 11/29/2021
	# Typo in rev. 1.458 (2003/12/09)??
	# These should likely by $env{'course.'.$cid.'.domain'} and $env{'course.'.$cid.'.num'}
	#
	# While these remain as $env{'request.'.$cid.'.domain'} and $env{'request.'.$cid.'.num'}
	# $dom and $name will always be null, so the &inc() call will default to storing this data
	# in a nohist_accesscount.db file for the user rather than the course.
	#
	# That said there is a lot of noise in the data being stored.
	# So counts for prtspool/ and adm/ etc. are recorded.
	#
	# A review of which items ending '___count' are written to %accesshash should likely be
	# made before deciding whether to set these to 'course.' instead of 'request.'
	#
	# Under the current scheme each user receives a nohist_accesscount.db file listing
	# accesses for things which are not published resources, regardless of course, and
	# there is not a nohist_accesscount.db file in a course, which might log accesses from
	# anyone in the course for things which are not published resources.
	#
	# For an author, nohist_accesscount.db ends up having records for other items
	# mixed up with the legitimate access counts for the author's published resources.
	#
$dom = $env{'request.'.$cid.'.domain'};	$dom = $env{'request.'.$cid.'.domain'};
$name = $env{'request.'.$cid.'.num'};	$name = $env{'request.'.$cid.'.num'};
}	}
Line 4481 sub flushcourselogs {	Line 5328 sub flushcourselogs {
foreach my $entry (keys(%userrolehash)) {	foreach my $entry (keys(%userrolehash)) {
my ($role,$uname,$udom,$runame,$rudom,$rsec)=	my ($role,$uname,$udom,$runame,$rudom,$rsec)=
split(/\:/,$entry);	split(/\:/,$entry);
if (&Apache::lonnet::put('nohist_userroles',	if (&put('nohist_userroles',
{ $role.':'.$uname.':'.$udom.':'.$rsec => $userrolehash{$entry} },	{ $role.':'.$uname.':'.$udom.':'.$rsec => $userrolehash{$entry} },
$rudom,$runame) eq 'ok') {	$rudom,$runame) eq 'ok') {
delete $userrolehash{$entry};	delete $userrolehash{$entry};
Line 4503 sub flushcourselogs {	Line 5350 sub flushcourselogs {
delete $domainrolehash{$entry};	delete $domainrolehash{$entry};
}	}
foreach my $dom (keys(%domrolebuffer)) {	foreach my $dom (keys(%domrolebuffer)) {
my %servers;	my %servers;
if (defined(&domain($dom,'primary'))) {	if (defined(&domain($dom,'primary'))) {
my $primary=&domain($dom,'primary');	my $primary=&domain($dom,'primary');
my $hostname=&hostname($primary);	my $hostname=&hostname($primary);
$servers{$primary} = $hostname;	$servers{$primary} = $hostname;
} else {	} else {
%servers = &get_servers($dom,'library');	%servers = &get_servers($dom,'library');
}	}
foreach my $tryserver (keys(%servers)) {	foreach my $tryserver (keys(%servers)) {
if (&reply('domroleput:'.$dom.':'.	if (&reply('domroleput:'.$dom.':'.
$domrolebuffer{$dom},$tryserver) eq 'ok') {	$domrolebuffer{$dom},$tryserver) eq 'ok') {
last;	last;
} else {	} else {
&logthis('Put of domain roles failed for '.$dom.' and '.$tryserver);	&logthis('Put of domain roles failed for '.$dom.' and '.$tryserver);
}	}
}	}
Line 4564 sub courseacclog {	Line 5411 sub courseacclog {
if ($formitem =~ /^HWFILE(?:SIZE\|TOOBIG)/) {	if ($formitem =~ /^HWFILE(?:SIZE\|TOOBIG)/) {
$what.=':'.$formitem.'='.$env{$key};	$what.=':'.$formitem.'='.$env{$key};
} elsif ($formitem !~ /^HWFILE(?:[^.]+)$/) {	} elsif ($formitem !~ /^HWFILE(?:[^.]+)$/) {
$what.=':'.$formitem.'='.$env{$key};	if ($formitem eq 'proctorpassword') {
	$what.=':'.$formitem.'=' . '*' x length($env{$key});
	} else {
	$what.=':'.$formitem.'='.$env{$key};
	}
}	}
}	}
}	}
Line 4644 sub userrolelog {	Line 5495 sub userrolelog {
}	}

sub courserolelog {	sub courserolelog {
my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$selfenroll,$context)=@_;	my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$selfenroll,
	$context,$othdomby,$requester)=@_;
if ($area =~ m-^/($match_domain)/($match_courseid)/?([^/]*)-) {	if ($area =~ m-^/($match_domain)/($match_courseid)/?([^/]*)-) {
my $cdom = $1;	my $cdom = $1;
my $cnum = $2;	my $cnum = $2;
Line 4657 sub courserolelog {	Line 5509 sub courserolelog {
selfenroll => $selfenroll,	selfenroll => $selfenroll,
context => $context,	context => $context,
);	);
	if ($othdomby) {
	if ($othdomby eq 'othdombydc') {
	$storehash{'approval'} = 'domain';
	} elsif ($othdomby eq 'othdombyuser') {
	$storehash{'approval'} = 'user';
	}
	if ($requester ne '') {
	$storehash{'requester'} = $requester;
	}
	}
if ($trole eq 'gr') {	if ($trole eq 'gr') {
$namespace = 'groupslog';	$namespace = 'groupslog';
$storehash{'group'} = $sec;	$storehash{'group'} = $sec;
} else {	} else {
$storehash{'section'} = $sec;	$storehash{'section'} = $sec;
	my ($curruserdomstr,$newuserdomstr);
	if (exists($env{'course.'.$cdom.'_'.$cnum.'.internal.userdomains'})) {
	$curruserdomstr = $env{'course.'.$env{'request.course.id'}.'.internal.userdomains'};
	} else {
	my %courseinfo = &coursedescription($cdom.'/'.$cnum);
	$curruserdomstr = $courseinfo{'internal.userdomains'};
	}
	if ($curruserdomstr ne '') {
	my @udoms = split(/,/,$curruserdomstr);
	unless (grep(/^\Q$domain\E/,@udoms)) {
	push(@udoms,$domain);
	$newuserdomstr = join(',',sort(@udoms));
	}
	} else {
	$newuserdomstr = $domain;
	}
	if ($newuserdomstr ne '') {
	my $putresult = &put('environment',{ 'internal.userdomains' => $newuserdomstr },
	$cdom,$cnum);
	if ($putresult eq 'ok') {
	unless (($selfenroll) \|\| ($context eq 'selfenroll')) {
	if (($context eq 'createcourse') \|\| ($context eq 'requestcourses') \|\|
	($context eq 'automated') \|\| ($context eq 'domain')) {
	$env{'course.'.$cdom.'_'.$cnum.'.internal.userdomains'} = $newuserdomstr;
	} elsif ($env{'request.course.id'} eq $cdom.'_'.$cnum) {
	&appenv({'course.'.$cdom.'_'.$cnum.'.internal.userdomains' => $newuserdomstr});
	}
	}
	}
	}
}	}
&write_log('course',$namespace,\%storehash,$delflag,$username,	&write_log('course',$namespace,\%storehash,$delflag,$username,
$domain,$cnum,$cdom);	$domain,$cnum,$cdom);
Line 4673 sub courserolelog {	Line 5565 sub courserolelog {
}	}

sub domainrolelog {	sub domainrolelog {
my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$context)=@_;	my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,
	$context,$othdomby,$requester)=@_;
if ($area =~ m{^/($match_domain)/$}) {	if ($area =~ m{^/($match_domain)/$}) {
my $cdom = $1;	my $cdom = $1;
my $domconfiguser = &Apache::lonnet::get_domainconfiguser($cdom);	my $domconfiguser = &get_domainconfiguser($cdom);
my $namespace = 'rolelog';	my $namespace = 'rolelog';
my %storehash = (	my %storehash = (
role => $trole,	role => $trole,
Line 4684 sub domainrolelog {	Line 5577 sub domainrolelog {
end => $tend,	end => $tend,
context => $context,	context => $context,
);	);
	if ($othdomby) {
	if ($othdomby eq 'othdombydc') {
	$storehash{'approval'} = 'domain';
	} elsif ($othdomby eq 'othdombyuser') {
	$storehash{'approval'} = 'user';
	}
	if ($requester ne '') {
	$storehash{'requester'} = $requester;
	}
	}
&write_log('domain',$namespace,\%storehash,$delflag,$username,	&write_log('domain',$namespace,\%storehash,$delflag,$username,
$domain,$domconfiguser,$cdom);	$domain,$domconfiguser,$cdom);
}	}
Line 4692 sub domainrolelog {	Line 5595 sub domainrolelog {
}	}

sub coauthorrolelog {	sub coauthorrolelog {
my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$context)=@_;	my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,
	$context,$othdomby,$requester)=@_;
if ($area =~ m{^/($match_domain)/($match_username)$}) {	if ($area =~ m{^/($match_domain)/($match_username)$}) {
my $audom = $1;	my $audom = $1;
my $auname = $2;	my $auname = $2;
Line 4703 sub coauthorrolelog {	Line 5607 sub coauthorrolelog {
end => $tend,	end => $tend,
context => $context,	context => $context,
);	);
	if ($othdomby) {
	if ($othdomby eq 'othdombydc') {
	$storehash{'approval'} = 'domain';
	} elsif ($othdomby eq 'othdombyuser') {
	$storehash{'approval'} = 'user';
	}
	if ($requester ne '') {
	$storehash{'requester'} = $requester;
	}
	}
&write_log('author',$namespace,\%storehash,$delflag,$username,	&write_log('author',$namespace,\%storehash,$delflag,$username,
$domain,$auname,$audom);	$domain,$auname,$audom);
}	}
Line 4843 sub get_my_roles {	Line 5757 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 4907 sub get_my_adhocroles {	Line 5821 sub get_my_adhocroles {
} elsif ($cid =~ /^($match_domain)_($match_courseid)$/) {	} elsif ($cid =~ /^($match_domain)_($match_courseid)$/) {
$cdom = $1;	$cdom = $1;
$cnum = $2;	$cnum = $2;
%info = &Apache::lonnet::get('environment',['internal.coursecode'],	%info = &get('environment',['internal.coursecode'],
$cdom,$cnum);	$cdom,$cnum);
}	}
if (($info{'internal.coursecode'} ne '') && ($checkreg)) {	if (($info{'internal.coursecode'} ne '') && ($checkreg)) {
my $user = $env{'user.name'}.':'.$env{'user.domain'};	my $user = $env{'user.name'}.':'.$env{'user.domain'};
Line 5140 sub courseiddump {	Line 6054 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))));	$reqcrsdom,&escape($reqinstcode))));
} else {	} else {
Line 5165 sub courseiddump {	Line 6079 sub courseiddump {
&escape($creationcontext).':'.$domcloner.':'.$hasuniquecode.	&escape($creationcontext).':'.$domcloner.':'.$hasuniquecode.
':'.$reqcrsdom.':'.&escape($reqinstcode),$tryserver);	':'.$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 5235 sub extract_lastaccess {	Line 6149 sub extract_lastaccess {

sub dcmailput {	sub dcmailput {
my ($domain,$msgid,$message,$server)=@_;	my ($domain,$msgid,$message,$server)=@_;
my $status = &Apache::lonnet::critical(	my $status = &critical(
'dcmailput:'.$domain.':'.&escape($msgid).'='.	'dcmailput:'.$domain.':'.&escape($msgid).'='.
&escape($message),$server);	&escape($message),$server);
return $status;	return $status;
Line 5320 my %cachedtimes=();	Line 6234 my %cachedtimes=();
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 5331 sub load_all_first_access {	Line 6246 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 5343 sub get_first_access {	Line 6258 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 5391 sub set_first_access {	Line 6306 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 5730 sub tmpreset {	Line 6560 sub tmpreset {
if (!$domain) { $domain=$env{'user.domain'}; }	if (!$domain) { $domain=$env{'user.domain'}; }
if (!$stuname) { $stuname=$env{'user.name'}; }	if (!$stuname) { $stuname=$env{'user.name'}; }
if ($domain eq 'public' && $stuname eq 'public') {	if ($domain eq 'public' && $stuname eq 'public') {
$stuname=$ENV{'REMOTE_ADDR'};	$stuname=&get_requestor_ip();
}	}
my $path=LONCAPA::tempdir();	my $path=LONCAPA::tempdir();
my %hash;	my %hash;
Line 5767 sub tmpstore {	Line 6597 sub tmpstore {
if (!$domain) { $domain=$env{'user.domain'}; }	if (!$domain) { $domain=$env{'user.domain'}; }
if (!$stuname) { $stuname=$env{'user.name'}; }	if (!$stuname) { $stuname=$env{'user.name'}; }
if ($domain eq 'public' && $stuname eq 'public') {	if ($domain eq 'public' && $stuname eq 'public') {
$stuname=$ENV{'REMOTE_ADDR'};	$stuname=&get_requestor_ip();
}	}
my $now=time;	my $now=time;
my %hash;	my %hash;
Line 5811 sub tmprestore {	Line 6641 sub tmprestore {
if (!$domain) { $domain=$env{'user.domain'}; }	if (!$domain) { $domain=$env{'user.domain'}; }
if (!$stuname) { $stuname=$env{'user.name'}; }	if (!$stuname) { $stuname=$env{'user.name'}; }
if ($domain eq 'public' && $stuname eq 'public') {	if ($domain eq 'public' && $stuname eq 'public') {
$stuname=$ENV{'REMOTE_ADDR'};	$stuname=&get_requestor_ip();
}	}
my %returnhash;	my %returnhash;
$namespace=~s/\//\_/g;	$namespace=~s/\//\_/g;
Line 5867 sub store {	Line 6697 sub store {
}	}
if (!$home) { $home=$env{'user.home'}; }	if (!$home) { $home=$env{'user.home'}; }

$$storehash{'ip'}=$ENV{'REMOTE_ADDR'};	$$storehash{'ip'}=&get_requestor_ip();
$$storehash{'host'}=$perlvar{'lonHostID'};	$$storehash{'host'}=$perlvar{'lonHostID'};

my $namevalue='';	my $namevalue='';
Line 5903 sub cstore {	Line 6733 sub cstore {
}	}
if (!$home) { $home=$env{'user.home'}; }	if (!$home) { $home=$env{'user.home'}; }

$$storehash{'ip'}=$ENV{'REMOTE_ADDR'};	$$storehash{'ip'}=&get_requestor_ip();
$$storehash{'host'}=$perlvar{'lonHostID'};	$$storehash{'host'}=$perlvar{'lonHostID'};

my $namevalue='';	my $namevalue='';
Line 6069 sub privileged {	Line 6899 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 6096 sub privileged {	Line 6926 sub privileged {
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 > $now);
}	}
}	}
Line 6134 sub privileged_by_domain {	Line 6964 sub privileged_by_domain {
my ($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 6167 sub rolesinit {	Line 6997 sub rolesinit {
my %firstaccess = &dump('firstaccesstimes', $domain, $username);	my %firstaccess = &dump('firstaccesstimes', $domain, $username);
my %timerinterval = &dump('timerinterval', $domain, $username);	my %timerinterval = &dump('timerinterval', $domain, $username);
my (%coursetimerstarts, %firstaccchk, %firstaccenv, %coursetimerintervals,	my (%coursetimerstarts, %firstaccchk, %firstaccenv, %coursetimerintervals,
%timerintchk, %timerintenv);	%timerintchk, %timerintenv, %coauthorenv);

foreach my $key (keys(%firstaccess)) {	foreach my $key (keys(%firstaccess)) {
my ($cid, $rest) = split(/\0/, $key);	my ($cid, $rest) = split(/\0/, $key);
Line 6181 sub rolesinit {	Line 7011 sub rolesinit {

my %allroles=();	my %allroles=();
my %allgroups=();	my %allgroups=();
	my %gotcoauconfig=();
	my %domdefaults=();

for my $area (grep { ! /^rolesdef_/ } keys(%rolesdump)) {	for my $area (grep { ! /^rolesdef_/ } keys(%rolesdump)) {
my $role = $rolesdump{$area};	my $role = $rolesdump{$area};
Line 6232 sub rolesinit {	Line 7064 sub rolesinit {
} else {	} else {
# Normal role, defined in roles.tab	# Normal role, defined in roles.tab
&standard_roleprivs(\%allroles,$trole,$tdomain,$spec,$trest,$area);	&standard_roleprivs(\%allroles,$trole,$tdomain,$spec,$trest,$area);
	if (($trole eq 'ca') \|\| ($trole eq 'aa')) {
	(undef,my ($audom,$auname)) = split(/\//,$area);
	unless ($gotcoauconfig{$area}) {
	my @ca_settings = ('authoreditors','coauthorlist','coauthoroptin');
	my %info = &userenvironment($audom,$auname,@ca_settings);
	$gotcoauconfig{$area} = 1;
	foreach my $item (@ca_settings) {
	if (exists($info{$item})) {
	my $name = $item;
	if ($item eq 'authoreditors') {
	$name = 'editors';
	unless ($info{'authoreditors'}) {
	my %domdefs;
	if (ref($domdefaults{$audom}) eq 'HASH') {
	%domdefs = %{$domdefaults{$audom}};
	} else {
	%domdefs = &get_domain_defaults($audom);
	$domdefaults{$audom} = \%domdefs;
	}
	if ($domdefs{$name} ne '') {
	$info{'authoreditors'} = $domdefs{$name};
	} else {
	$info{'authoreditors'} = 'edit,xml';
	}
	}
	}
	$coauthorenv{"environment.internal.$name.$area"} = $info{$item};
	}
	}
	}
	}
}	}

my $cid = $tdomain.'_'.$trest;	my $cid = $tdomain.'_'.$trest;
Line 6260 sub rolesinit {	Line 7123 sub rolesinit {
$env{'user.adv'} = $userroles{'user.adv'};	$env{'user.adv'} = $userroles{'user.adv'};
$env{'user.rar'} = $userroles{'user.rar'};	$env{'user.rar'} = $userroles{'user.rar'};

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

sub set_arearole {	sub set_arearole {
Line 6321 sub course_adhocrole_privs {	Line 7184 sub course_adhocrole_privs {
$full{$priv} = $restrict;	$full{$priv} = $restrict;
}	}
foreach my $item (split(/,/,$overrides{"internal.adhocpriv.$rolename"})) {	foreach my $item (split(/,/,$overrides{"internal.adhocpriv.$rolename"})) {
next if ($item eq '');	next if ($item eq '');
my ($rule,$rest) = split(/=/,$item);	my ($rule,$rest) = split(/=/,$item);
next unless (($rule eq 'off') \|\| ($rule eq 'on'));	next unless (($rule eq 'off') \|\| ($rule eq 'on'));
foreach my $priv (split(/:/,$rest)) {	foreach my $priv (split(/:/,$rest)) {
if ($priv ne '') {	if ($priv ne '') {
if ($rule eq 'off') {	if ($rule eq 'off') {
$possremove{$priv} = 1;	$possremove{$priv} = 1;
} else {	} else {
$possadd{$priv} = 1;	$possadd{$priv} = 1;
}	}
}	}
}	}
}	}
foreach my $priv (sort(keys(%full))) {	foreach my $priv (sort(keys(%full))) {
if (exists($currprivs{$priv})) {	if (exists($currprivs{$priv})) {
unless (exists($possremove{$priv})) {	unless (exists($possremove{$priv})) {
$storeprivs{$priv} = $currprivs{$priv};	$storeprivs{$priv} = $currprivs{$priv};
}	}
} elsif (exists($possadd{$priv})) {	} elsif (exists($possadd{$priv})) {
$storeprivs{$priv} = $full{$priv};	$storeprivs{$priv} = $full{$priv};
}	}
}	}
$coursepriv = ':'.join(':',map { $_.'&'.$storeprivs{$_}; } sort(keys(%storeprivs)));	$coursepriv = ':'.join(':',map { $_.'&'.$storeprivs{$_}; } sort(keys(%storeprivs)));
}	}
return $coursepriv;	return $coursepriv;
}	}

sub group_roleprivs {	sub group_roleprivs {
Line 6567 sub check_adhoc_privs {	Line 7430 sub check_adhoc_privs {
my $cckey = 'user.role.'.$checkrole.'./'.$cdom.'/'.$cnum;	my $cckey = 'user.role.'.$checkrole.'./'.$cdom.'/'.$cnum;
if ($sec) {	if ($sec) {
$cckey .= '/'.$sec;	$cckey .= '/'.$sec;
}	}
my $setprivs;	my $setprivs;
if ($env{$cckey}) {	if ($env{$cckey}) {
my ($role,$where,$trolecode,$tstart,$tend,$tremark,$tstatus,$tpstart,$tpend);	my ($role,$where,$trolecode,$tstart,$tend,$tremark,$tstatus,$tpstart,$tpend);
Line 6609 sub set_adhoc_privileges {	Line 7472 sub set_adhoc_privileges {
my ($author,$adv,$rar)= &set_userprivs(\%userroles,\%rolehash);	my ($author,$adv,$rar)= &set_userprivs(\%userroles,\%rolehash);
&appenv(\%userroles,[$role,'cm']);	&appenv(\%userroles,[$role,'cm']);
&log($env{'user.domain'},$env{'user.name'},$env{'user.home'},"Role ".$spec);	&log($env{'user.domain'},$env{'user.name'},$env{'user.home'},"Role ".$spec);
unless ($caller eq 'constructaccess' && $env{'request.course.id'}) {	unless (($caller eq 'constructaccess' && $env{'request.course.id'}) \|\|
	($caller eq 'tiny')) {
&appenv( {'request.role' => $spec,	&appenv( {'request.role' => $spec,
'request.role.domain' => $dcdom,	'request.role.domain' => $dcdom,
'request.course.sec' => $sec,	'request.course.sec' => $sec,
}	}
);	);
my $tadv=0;	my $tadv=0;
Line 6672 sub unserialize {	Line 7536 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 $escapedkeys hash keys won't get unescaped.
sub dump {	sub dump {
my ($namespace,$udomain,$uname,$regexp,$range,$escapedkeys)=@_;	my ($namespace,$udomain,$uname,$regexp,$range,$escapedkeys,$encrypt)=@_;
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 6694 sub dump {	Line 7559 sub dump {
} else {	} else {
$regexp='.';	$regexp='.';
}	}
if (grep { $_ eq $uhome } &current_machine_ids()) {	if (grep { $_ eq $uhome } current_machine_ids()) {
# user is hosted on this machine	# user is hosted on this machine
my $reply = LONCAPA::Lond::dump_with_regexp(join(':', ($udomain,	my $reply = LONCAPA::Lond::dump_with_regexp(join(":", ($udomain,
$uname, $namespace, $regexp, $range)), $perlvar{'lonVersion'});	$uname, $namespace, $regexp, $range)), $perlvar{'lonVersion'});
return %{&unserialize($reply, $escapedkeys)};	return %{unserialize($reply, $escapedkeys)};
	}
	my $rep;
	if ($encrypt) {
	$rep=&reply("encrypt:edump:$udomain:$uname:$namespace:$regexp:$range",$uhome);
	} else {
	$rep=&reply("dump:$udomain:$uname:$namespace:$regexp:$range",$uhome);
}	}
my $rep=&reply("dump:$udomain:$uname:$namespace:$regexp:$range",$uhome);
my @pairs=split(/\&/,$rep);	my @pairs=split(/\&/,$rep);
my %returnhash=();	my %returnhash=();
if (!($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 6750 sub currentdump {	Line 7621 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,$uhome);
Line 6760 sub currentdump {	Line 7631 sub currentdump {
#	#
my %returnhash=();	my %returnhash=();
#	#
if ($rep eq "unknown_cmd") {	if ($rep eq 'unknown_cmd') {
# an old lond will not know currentdump	# an old lond will not know currentdump
# Do a dump and make it look like a currentdump	# Do a dump and make it look like a currentdump
my @tmp = &dumpstore($courseid,$sdom,$sname,'.');	my @tmp = &dumpstore($courseid,$sdom,$sname,'.');
Line 6846 sub inc {	Line 7717 sub inc {
# --------------------------------------------------------------- put interface	# --------------------------------------------------------------- put interface

sub put {	sub put {
my ($namespace,$storehash,$udomain,$uname)=@_;	my ($namespace,$storehash,$udomain,$uname,$encrypt)=@_;
if (!$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 6855 sub put {	Line 7726 sub put {
$items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';	$items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
}	}
$items=~s/\&$//;	$items=~s/\&$//;
return &reply("put:$udomain:$uname:$namespace:$items",$uhome);	if ($encrypt) {
	return &reply("encrypt:put:$udomain:$uname:$namespace:$items",$uhome);
	} else {
	return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
	}
}	}

# ------------------------------------------------------------ newput interface	# ------------------------------------------------------------ newput interface
Line 6895 sub putstore {	Line 7770 sub putstore {
foreach my $key (keys(%{$storehash})) {	foreach my $key (keys(%{$storehash})) {
$namevalue.=&escape($key).'='.&freeze_escape($storehash->{$key}).'&';	$namevalue.=&escape($key).'='.&freeze_escape($storehash->{$key}).'&';
}	}
$namevalue .= 'ip='.&escape($ENV{'REMOTE_ADDR'}).	my $ip = &get_requestor_ip();
	$namevalue .= 'ip='.&escape($ip).
'&host='.&escape($perlvar{'lonHostID'}).	'&host='.&escape($perlvar{'lonHostID'}).
'&version='.$esc_v.	'&version='.$esc_v.
'&by='.&escape($env{'user.name'}.':'.$env{'user.domain'});	'&by='.&escape($env{'user.name'}.':'.$env{'user.domain'});
&Apache::lonnet::courselog($symb.':'.$uname.':'.$udomain.':PUTSTORE:'.$namevalue);	&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
Line 7011 sub tmpdel {	Line 7887 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 7031 sub get_timebased_id {	Line 7907 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 7049 sub get_timebased_id {	Line 7925 sub get_timebased_id {
my $tries = 0;	my $tries = 0;

# attempt to get lock on nohist_$namespace file	# attempt to get lock on nohist_$namespace file
my $gotlock = &Apache::lonnet::newput('nohist_'.$namespace,$lockhash,$cdom,$cnum);	my $gotlock = &newput('nohist_'.$namespace,$lockhash,$cdom,$cnum);
while (($gotlock ne 'ok') && $tries <$locktries) {	while (($gotlock ne 'ok') && $tries <$locktries) {
$tries ++;	$tries ++;
sleep 1;	sleep 1;
$gotlock = &Apache::lonnet::newput('nohist_'.$namespace,$lockhash,$cdom,$cnum);	$gotlock = &newput('nohist_'.$namespace,$lockhash,$cdom,$cnum);
}	}

# attempt to get unique identifier, based on current timestamp	# attempt to get unique identifier, based on current timestamp
if ($gotlock eq 'ok') {	if ($gotlock eq 'ok') {
my %inuse = &Apache::lonnet::dump('nohist_'.$namespace,$cdom,$cnum,$prefix);	my %inuse = &dump('nohist_'.$namespace,$cdom,$cnum,$prefix);
my $id = time;	my $id = time;
$newid = $id;	$newid = $id;
if ($idtype eq 'addcode') {	if ($idtype eq 'addcode') {
Line 7079 sub get_timebased_id {	Line 7955 sub get_timebased_id {
my %new_item = (	my %new_item = (
$prefix."\0".$newid => $who,	$prefix."\0".$newid => $who,
);	);
my $putresult = &Apache::lonnet::put('nohist_'.$namespace,\%new_item,	my $putresult = &put('nohist_'.$namespace,\%new_item,
$cdom,$cnum);	$cdom,$cnum);
if ($putresult ne 'ok') {	if ($putresult ne 'ok') {
undef($newid);	undef($newid);
Line 7119 sub portfolio_access {	Line 7995 sub portfolio_access {
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' && $env{'user.domain'} eq 'public') {
my ($startblock,$endblock) =	my ($startblock,$endblock,$triggerblock,$by_ip,$blockdom) =
&Apache::loncommon::blockcheck(\%setters,'port',$unum,$udom);	&Apache::loncommon::blockcheck(\%setters,'port',$clientip,$unum,$udom);
if ($startblock && $endblock) {	if (($startblock && $endblock) \|\| ($by_ip)) {
return 'B';	return 'B';
}	}
} else {	} else {
my ($startblock,$endblock) =	my ($startblock,$endblock,$triggerblock,$by_ip,$blockdom) =
&Apache::loncommon::blockcheck(\%setters,'port');	&Apache::loncommon::blockcheck(\%setters,'port',$clientip);
if ($startblock && $endblock) {	if (($startblock && $endblock) \|\| ($by_ip)) {
return 'B';	return 'B';
}	}
}	}
Line 7141 sub portfolio_access {	Line 8017 sub portfolio_access {
}	}

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

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 7150 sub get_portfolio_access {	Line 8026 sub get_portfolio_access {
$access_hash = $access_controls{$file_name};	$access_hash = $access_controls{$file_name};
}	}

my ($public,$guest,@domains,@users,@courses,@groups,@ips);	my $portaccess;
	if (ref($portaccess) eq 'SCALAR') {
	$portaccess = $$portaccessref;
	} else {
	$portaccess = &usertools_access($unum,$udom,'portaccess',undef,'tools');
	}

	my ($public,$guest,@domains,@users,@courses,@groups,@ips,@userips);
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})) {
my ($num,$scope,$end,$start) = ($key =~ /^([^:]+):([a-z]+)_(\d)_?(\d)$/);	my ($num,$scope,$end,$start) = ($key =~ /^([^:]+):([a-z]+)_(\d)_?(\d)$/);
	next if (($scope ne 'ip') && ($portaccess == 0));
if ($start > $now) {	if ($start > $now) {
next;	next;
}	}
Line 7176 sub get_portfolio_access {	Line 8060 sub get_portfolio_access {
push(@groups,$key);	push(@groups,$key);
} elsif ($scope eq 'ip') {	} elsif ($scope eq 'ip') {
push(@ips,$key);	push(@ips,$key);
	} elsif ($scope eq 'userip') {
	push(@userips,$key);
}	}
}	}
if ($public) {	if ($public) {
Line 7186 sub get_portfolio_access {	Line 8072 sub get_portfolio_access {
if (ref($access_hash->{$ipkey}{'ip'}) eq 'ARRAY') {	if (ref($access_hash->{$ipkey}{'ip'}) eq 'ARRAY') {
if (&Apache::loncommon::check_ip_acc(join(',',@{$access_hash->{$ipkey}{'ip'}}),$clientip)) {	if (&Apache::loncommon::check_ip_acc(join(',',@{$access_hash->{$ipkey}{'ip'}}),$clientip)) {
$allowed = 1;	$allowed = 1;
	last;
	}
	}
	}
	if ($allowed) {
	return 'ok';
	}
	} elsif (@userips > 0) {
	my $allowed;
	foreach my $useripkey (@userips) {
	if (ref($access_hash->{$useripkey}{'ip'}) eq 'ARRAY') {
	if (&Apache::loncommon::check_ip_acc(join(',',@{$access_hash->{$useripkey}{'ip'}}),$clientip)) {
	$allowed = 1;
last;	last;
}	}
}	}
Line 7368 sub is_portfolio_file {	Line 8267 sub is_portfolio_file {
return;	return;
}	}

	sub is_coursetool_logo {
	my ($uri) = @_;
	if ($env{'request.course.id'}) {
	my $courseurl = &courseid_to_courseurl($env{'request.course.id'});
	if ($uri =~ m{^/*uploaded\Q$courseurl\E/toollogo/\d+/[^/]+$}) {
	return 1;
	}
	}
	return;
	}

sub usertools_access {	sub usertools_access {
my ($uname,$udom,$tool,$action,$context,$userenvref,$domdefref,$is_advref)=@_;	my ($uname,$udom,$tool,$action,$context,$userenvref,$domdefref,$is_advref)=@_;
my ($access,%tools);	my ($access,%tools);
Line 7380 sub usertools_access {	Line 8290 sub usertools_access {
unofficial => 1,	unofficial => 1,
community => 1,	community => 1,
textbook => 1,	textbook => 1,
	placement => 1,
	lti => 1,
);	);
} elsif ($context eq 'requestauthor') {	} elsif ($context eq 'requestauthor') {
%tools = (	%tools = (
requestauthor => 1,	requestauthor => 1,
);	);
	} elsif ($context eq 'authordefaults') {
	%tools = (
	webdav => 1,
	);
} else {	} else {
%tools = (	%tools = (
aboutme => 1,	aboutme => 1,
blog => 1,	blog => 1,
webdav => 1,	webdav => 1,
portfolio => 1,	portfolio => 1,
	portaccess => 1,
	timezone => 1,
);	);
}	}
return if (!defined($tools{$tool}));	return if (!defined($tools{$tool}));
Line 7406 sub usertools_access {	Line 8324 sub usertools_access {
return $env{'environment.canrequest.'.$tool};	return $env{'environment.canrequest.'.$tool};
} elsif ($context eq 'requestauthor') {	} elsif ($context eq 'requestauthor') {
return $env{'environment.canrequest.author'};	return $env{'environment.canrequest.author'};
	} elsif ($context eq 'authordefaults') {
	if ($tool eq 'webdav') {
	return $env{'environment.availabletools.'.$tool};
	}
} else {	} else {
return $env{'environment.availabletools.'.$tool};	return $env{'environment.availabletools.'.$tool};
}	}
Line 7415 sub usertools_access {	Line 8337 sub usertools_access {
my ($toolstatus,$inststatus,$envkey);	my ($toolstatus,$inststatus,$envkey);
if ($context eq 'requestauthor') {	if ($context eq 'requestauthor') {
$envkey = $context;	$envkey = $context;
	} elsif ($context eq 'authordefaults') {
	if ($tool eq 'webdav') {
	$envkey = 'tools.'.$tool;
	}
} else {	} else {
$envkey = $context.'.'.$tool;	$envkey = $context.'.'.$tool;
}	}
Line 7515 sub is_course_owner {	Line 8441 sub is_course_owner {
if ($env{'course.'.$cdom.'_'.$cnum.'.internal.courseowner'} eq $uname.':'.$udom) {	if ($env{'course.'.$cdom.'_'.$cnum.'.internal.courseowner'} eq $uname.':'.$udom) {
return 1;	return 1;
} else {	} else {
my %courseinfo = &Apache::lonnet::coursedescription($cdom.'/'.$cnum);	my %courseinfo = &coursedescription($cdom.'/'.$cnum);
if ($courseinfo{'internal.courseowner'} eq $uname.':'.$udom) {	if ($courseinfo{'internal.courseowner'} eq $uname.':'.$udom) {
return 1;	return 1;
}	}
Line 7526 sub is_course_owner {	Line 8452 sub is_course_owner {
}	}

sub is_advanced_user {	sub is_advanced_user {
my ($udom,$uname) = @_;	my ($udom,$uname,$nocache) = @_;
	my ($is_adv,$is_author,$use_cache,$hashid);
if ($udom ne '' && $uname ne '') {	if ($udom ne '' && $uname ne '') {
if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {	if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
if (wantarray) {	if (wantarray) {
Line 7534 sub is_advanced_user {	Line 8461 sub is_advanced_user {
} else {	} else {
return $env{'user.adv'};	return $env{'user.adv'};
}	}
	} elsif (!$nocache) {
	$use_cache = 1;
	$hashid = "$udom:$uname";
	my ($info,$cached)=&is_cached_new('isadvau',$hashid);
	if ($cached) {
	($is_adv,$is_author) = split(/:/,$info);
	if (wantarray) {
	return ($is_adv,$is_author);
	}
	return $is_adv;
	}
}	}
}	}
my %roleshash = &get_my_roles($uname,$udom,'userroles',undef,undef,undef,1);	my %roleshash = &get_my_roles($uname,$udom,'userroles',undef,undef,undef,1);
my %allroles;	my %allroles;
my ($is_adv,$is_author);
foreach my $role (keys(%roleshash)) {	foreach my $role (keys(%roleshash)) {
my ($trest,$tdomain,$trole,$sec) = split(/:/,$role);	my ($trest,$tdomain,$trole,$sec) = split(/:/,$role);
my $area = '/'.$tdomain.'/'.$trest;	my $area = '/'.$tdomain.'/'.$trest;
Line 7569 sub is_advanced_user {	Line 8506 sub is_advanced_user {
}	}
}	}
}	}
	if ($use_cache) {
	my $cachetime = 600;
	&do_cache_new('isadvau',$hashid,$is_adv.':'.$is_author,$cachetime);
	}
if (wantarray) {	if (wantarray) {
return ($is_adv,$is_author);	return ($is_adv,$is_author);
}	}
Line 7576 sub is_advanced_user {	Line 8517 sub is_advanced_user {
}	}

sub check_can_request {	sub check_can_request {
my ($dom,$can_request,$request_domains) = @_;	my ($dom,$can_request,$request_domains,$uname,$udom) = @_;
my $canreq = 0;	my $canreq = 0;
	if (($env{'user.name'} ne '') && ($env{'user.domain'} ne '')) {
	$uname = $env{'user.name'};
	$udom = $env{'user.domain'};
	}
my ($types,$typename) = &Apache::loncommon::course_types();	my ($types,$typename) = &Apache::loncommon::course_types();
my @options = ('approval','validate','autolimit');	my @options = ('approval','validate','autolimit');
my $optregex = join('\|',@options);	my $optregex = join('\|',@options);
if ((ref($can_request) eq 'HASH') && (ref($types) eq 'ARRAY')) {	if ((ref($can_request) eq 'HASH') && (ref($types) eq 'ARRAY')) {
	my %willtrust;
foreach my $type (@{$types}) {	foreach my $type (@{$types}) {
if (&usertools_access($env{'user.name'},	if (&usertools_access($uname,$udom,$type,undef,
$env{'user.domain'},	'requestcourses')) {
$type,undef,'requestcourses')) {
$canreq ++;	$canreq ++;
if (ref($request_domains) eq 'HASH') {	if (ref($request_domains) eq 'HASH') {
push(@{$request_domains->{$type}},$env{'user.domain'});	push(@{$request_domains->{$type}},$udom);
}	}
if ($dom eq $env{'user.domain'}) {	if ($dom eq $udom) {
$can_request->{$type} = 1;	$can_request->{$type} = 1;
}	}
}	}
if ($env{'environment.reqcrsotherdom.'.$type} ne '') {	if (($env{'user.name'} ne '') && ($env{'user.domain'} ne '') &&
	($env{'environment.reqcrsotherdom.'.$type} ne '')) {
my @curr = split(',',$env{'environment.reqcrsotherdom.'.$type});	my @curr = split(',',$env{'environment.reqcrsotherdom.'.$type});
if (@curr > 0) {	if (@curr > 0) {
foreach my $item (@curr) {	foreach my $item (@curr) {
if (ref($request_domains) eq 'HASH') {	if (ref($request_domains) eq 'HASH') {
my ($otherdom) = ($item =~ /^($match_domain):($optregex)(=?\d*)$/);	my ($otherdom) = ($item =~ /^($match_domain):($optregex)(=?\d*)$/);
if ($otherdom ne '') {	if ($otherdom ne '') {
if (ref($request_domains->{$type}) eq 'ARRAY') {	unless (exists($willtrust{$otherdom})) {
unless (grep(/^\Q$otherdom\E$/,@{$request_domains->{$type}})) {	$willtrust{$otherdom} = &will_trust('reqcrs',$env{'user.domain'},$otherdom);
	}
	if ($willtrust{$otherdom}) {
	if (ref($request_domains->{$type}) eq 'ARRAY') {
	unless (grep(/^\Q$otherdom\E$/,@{$request_domains->{$type}})) {
	push(@{$request_domains->{$type}},$otherdom);
	}
	} else {
push(@{$request_domains->{$type}},$otherdom);	push(@{$request_domains->{$type}},$otherdom);
}	}
} else {
push(@{$request_domains->{$type}},$otherdom);
}	}
}	}
}	}
}	}
unless($dom eq $env{'user.domain'}) {	unless ($dom eq $env{'user.domain'}) {
$canreq ++;	$canreq ++;
if (grep(/^\Q$dom\E:($optregex)(=?\d*)$/,@curr)) {	if (grep(/^\Q$dom\E:($optregex)(=?\d*)$/,@curr)) {
$can_request->{$type} = 1;	$can_request->{$type} = 1;
Line 7676 sub customaccess {	Line 8627 sub customaccess {
# ------------------------------------------------- Check for a user privilege	# ------------------------------------------------- Check for a user privilege

sub allowed {	sub allowed {
my ($priv,$uri,$symb,$role,$clientip,$noblockcheck)=@_;	my ($priv,$uri,$symb,$role,$clientip,$noblockcheck,$ignorecache,$nodeeplinkcheck,$nodeeplinkout)=@_;
my $ver_orguri=$uri;	my $ver_orguri=$uri;
$uri=&deversion($uri);	$uri=&deversion($uri);
my $orguri=$uri;	my $orguri=$uri;
$uri=&declutter($uri);	$uri=&declutter($uri);

if ($priv eq 'evb') {	if ($priv eq 'evb') {
# Evade communication block restrictions for specified role in a course	# Evade communication block restrictions for specified role in a course or domain
if ($env{'user.priv.'.$role} =~/evb\&([^\:]*)/) {	if ($env{'user.priv.'.$role} =~/evb\&([^\:]*)/) {
return $1;	return $1;
} else {	} else {
Line 7693 sub allowed {	Line 8644 sub allowed {

if (defined($env{'allowed.'.$priv})) { return $env{'allowed.'.$priv}; }	if (defined($env{'allowed.'.$priv})) { return $env{'allowed.'.$priv}; }
# Free bre access to adm and meta resources	# Free bre access to adm and meta resources
if (((($uri=~/^adm\//) && ($uri !~ m{/(?:smppg\|bulletinboard)$}))	if (((($uri=~/^adm\//) && ($uri !~ m{/(?:smppg\|bulletinboard\|viewclasslist\|aboutme\|ext\.tool)$}))
\|\| (($uri=~/\.meta$/) && ($uri!~m\|^uploaded/\|) ))	\|\| (($uri=~/\.meta$/) && ($uri!~m\|^uploaded/\|) ))
&& ($priv eq 'bre')) {	&& ($priv eq 'bre')) {
return 'F';	return 'F';
Line 7704 sub allowed {	Line 8655 sub allowed {
if (($space=~/^(uploaded\|editupload)$/) && ($env{'user.name'} eq $name) &&	if (($space=~/^(uploaded\|editupload)$/) && ($env{'user.name'} eq $name) &&
($env{'user.domain'} eq $domain) && ('portfolio' eq $dir[0])) {	($env{'user.domain'} eq $domain) && ('portfolio' eq $dir[0])) {
my %setters;	my %setters;
my ($startblock,$endblock) =	my ($startblock,$endblock,$triggerblock,$by_ip,$blockdom) =
&Apache::loncommon::blockcheck(\%setters,'port');	&Apache::loncommon::blockcheck(\%setters,'port',$clientip);
if ($startblock && $endblock) {	if (($startblock && $endblock) \|\| ($by_ip)) {
return 'B';	return 'B';
} else {	} else {
return 'F';	return 'F';
Line 7741 sub allowed {	Line 8692 sub allowed {
# Free bre to public access	# Free bre to public access

if ($priv eq 'bre') {	if ($priv eq 'bre') {
my $copyright=&metadata($uri,'copyright');	my $copyright;
	unless ($uri =~ /ext\.tool/) {
	$copyright=&metadata($uri,'copyright');
	}
if (($copyright eq 'public') && (!$env{'request.course.id'})) {	if (($copyright eq 'public') && (!$env{'request.course.id'})) {
return 'F';	return 'F';
}	}
Line 7799 sub allowed {	Line 8753 sub allowed {
my $adom = $1;	my $adom = $1;
foreach my $key (keys(%env)) {	foreach my $key (keys(%env)) {
if ($key =~ m{^user\.role\.(ca\|aa)/\Q$adom\E}) {	if ($key =~ m{^user\.role\.(ca\|aa)/\Q$adom\E}) {
my ($start,$end) = split('.',$env{$key});	my ($start,$end) = split(/\./,$env{$key});
if (($now >= $start) && (!$end \|\| $end < $now)) {	if (($now >= $start) && (!$end \|\| $end > $now)) {
$ownaccess = 1;	$ownaccess = 1;
last;	last;
}	}
Line 7812 sub allowed {	Line 8766 sub allowed {
foreach my $role ('ca','aa') {	foreach my $role ('ca','aa') {
if ($env{"user.role.$role./$adom/$aname"}) {	if ($env{"user.role.$role./$adom/$aname"}) {
my ($start,$end) =	my ($start,$end) =
split('.',$env{"user.role.$role./$adom/$aname"});	split(/\./,$env{"user.role.$role./$adom/$aname"});
if (($now >= $start) && (!$end \|\| $end < $now)) {	if (($now >= $start) && (!$end \|\| $end > $now)) {
$ownaccess = 1;	$ownaccess = 1;
last;	last;
}	}
Line 7858 sub allowed {	Line 8812 sub allowed {

if ($env{'user.priv.'.$env{'request.role'}.'.'.$courseuri}	if ($env{'user.priv.'.$env{'request.role'}.'.'.$courseuri}
=~/\Q$priv\E\&([^\:]*)/) {	=~/\Q$priv\E\&([^\:]*)/) {
unless (($priv eq 'bro') && (!$ownaccess)) {	if ($priv eq 'mip') {
$thisallowed.=$1;	my $rem = $1;
	if (($uri ne '') && ($env{'request.course.id'} eq $uri) &&
	($env{'course.'.$env{'request.course.id'}.'.internal.courseowner'} eq $env{'user.name'}.':'.$env{'user.domain'})) {
	my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
	if ($cdom ne '') {
	my %passwdconf = &get_passwdconf($cdom);
	if (ref($passwdconf{'crsownerchg'}) eq 'HASH') {
	if (ref($passwdconf{'crsownerchg'}{'by'}) eq 'ARRAY') {
	if (@{$passwdconf{'crsownerchg'}{'by'}}) {
	my @inststatuses = split(':',$env{'environment.inststatus'});
	unless (@inststatuses) {
	@inststatuses = ('default');
	}
	foreach my $status (@inststatuses) {
	if (grep(/^\Q$status\E$/,@{$passwdconf{'crsownerchg'}{'by'}})) {
	$thisallowed.=$rem;
	}
	}
	}
	}
	}
	}
	}
	} else {
	unless (($priv eq 'bro') && (!$ownaccess)) {
	$thisallowed.=$1;
	}
}	}
}	}

Line 7872 sub allowed {	Line 8852 sub allowed {
if ($env{'user.priv.'.$env{'request.role'}.'./'}	if ($env{'user.priv.'.$env{'request.role'}.'./'}
=~/\Q$priv\E\&([^\:]*)/) {	=~/\Q$priv\E\&([^\:]*)/) {
my $value = $1;	my $value = $1;
if ($noblockcheck) {	my $deeplinkblock;
	unless ($nodeeplinkcheck) {
	$deeplinkblock = &deeplink_check($priv,$symb,$uri);
	}
	if ($deeplinkblock) {
	$thisallowed='D';
	} elsif ($noblockcheck) {
$thisallowed.=$value;	$thisallowed.=$value;
} else {	} else {
my @blockers = &has_comm_blocking($priv,$symb,$uri);	my @blockers = &has_comm_blocking($priv,$symb,$uri,$ignorecache);
if (@blockers > 0) {	if (@blockers > 0) {
$thisallowed = 'B';	$thisallowed = 'B';
} else {	} else {
Line 7892 sub allowed {	Line 8878 sub allowed {
$refuri=&declutter($refuri);	$refuri=&declutter($refuri);
my ($match) = &is_on_map($refuri);	my ($match) = &is_on_map($refuri);
if ($match) {	if ($match) {
if ($noblockcheck) {	my $deeplinkblock;
	unless ($nodeeplinkcheck) {
	$deeplinkblock = &deeplink_check($priv,$symb,$refuri);
	}
	if ($deeplinkblock) {
	$thisallowed='D';
	} elsif ($noblockcheck) {
$thisallowed='F';	$thisallowed='F';
} else {	} else {
my @blockers = &has_comm_blocking($priv,$symb,$refuri);	my @blockers = &has_comm_blocking($priv,'',$refuri,'',1);
if (@blockers > 0) {	if (@blockers > 0) {
$thisallowed = 'B';	$thisallowed = 'B';
} else {	} else {
Line 7914 sub allowed {	Line 8906 sub allowed {
&& &is_portfolio_url($uri)) {	&& &is_portfolio_url($uri)) {
$thisallowed = &portfolio_access($uri,$clientip);	$thisallowed = &portfolio_access($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 7922 sub allowed {	Line 8914 sub allowed {

# If this is generating or modifying users, exit with special codes	# If this is generating or modifying users, exit with special codes

if (':csu:cdc:ccc:cin:cta:cep:ccr:cst:cad:cli:cau:cdg:cca:caa:'=~/\:\Q$priv\E\:/) {	if (':csu:cdc:ccc:cin:cta:cep:ccr:cst:cad:cli:cau:cdg:cca:caa:vca:vaa:'=~/\:\Q$priv\E\:/) {
if (($priv eq 'cca') \|\| ($priv eq 'caa')) {	if (($priv eq 'cca') \|\| ($priv eq 'caa')) {
my ($audom,$auname)=split('/',$uri);	my ($audom,$auname)=split('/',$uri);
# no author name given, so this just checks on the general right to make a co-author in this domain	# no author name given, so this just checks on the general right to make a co-author in this domain
Line 7931 sub allowed {	Line 8923 sub allowed {
if (($auname ne $env{'user.name'} && $env{'request.role'} !~ /^dc\./) \|\|	if (($auname ne $env{'user.name'} && $env{'request.role'} !~ /^dc\./) \|\|
(($audom ne $env{'user.domain'} && $env{'request.role'} !~ /^dc\./) &&	(($audom ne $env{'user.domain'} && $env{'request.role'} !~ /^dc\./) &&
($audom ne $env{'request.role.domain'}))) { return ''; }	($audom ne $env{'request.role.domain'}))) { return ''; }
	} elsif (($priv eq 'vca') \|\| ($priv eq 'vaa')) {
	my ($audom,$auname)=split('/',$uri);
	unless ($auname) { return $thisallowed; }
	unless (($env{'request.role'} eq "dc./$audom") \|\|
	($env{'request.role'} eq "ca./$uri")) {
	return '';
	}
}	}
return $thisallowed;	return $thisallowed;
}	}
Line 7942 sub allowed {	Line 8941 sub allowed {

if ($env{'request.course.id'}) {	if ($env{'request.course.id'}) {

	if ($priv eq 'bre') {
	if (&is_coursetool_logo($uri)) {
	return 'F';
	}
	}

	# If this is modifying password (internal auth) domains must match for user and user's role.

	if ($priv eq 'mip') {
	if ($env{'user.domain'} eq $env{'request.role.domain'}) {
	return $thisallowed;
	} else {
	return '';
	}
	}

$courseprivid=$env{'request.course.id'};	$courseprivid=$env{'request.course.id'};
if ($env{'request.course.sec'}) {	if ($env{'request.course.sec'}) {
$courseprivid.='/'.$env{'request.course.sec'};	$courseprivid.='/'.$env{'request.course.sec'};
Line 7955 sub allowed {	Line 8970 sub allowed {
=~/\Q$priv\E\&([^\:]*)/) {	=~/\Q$priv\E\&([^\:]*)/) {
my $value = $1;	my $value = $1;
if ($priv eq 'bre') {	if ($priv eq 'bre') {
if ($noblockcheck) {	my $deeplinkblock;
	unless ($nodeeplinkcheck) {
	$deeplinkblock = &deeplink_check($priv,$symb,$uri);
	}
	if ($deeplinkblock) {
	$thisallowed = 'D';
	} elsif ($noblockcheck) {
$thisallowed.=$value;	$thisallowed.=$value;
} else {	} else {
my @blockers = &has_comm_blocking($priv,$symb,$uri);	my @blockers = &has_comm_blocking($priv,$symb,$uri,$ignorecache);
if (@blockers > 0) {	if (@blockers > 0) {
$thisallowed = 'B';	$thisallowed = 'B';
} else {	} else {
Line 7971 sub allowed {	Line 8992 sub allowed {
$checkreferer=0;	$checkreferer=0;
}	}
}	}

if ($checkreferer) {	if ($checkreferer) {
my $refuri=$env{'httpref.'.$orguri};	my $refuri=$env{'httpref.'.$orguri};
unless ($refuri) {	unless ($refuri) {
Line 7997 sub allowed {	Line 9018 sub allowed {
=~/\Q$priv\E\&([^\:]*)/) {	=~/\Q$priv\E\&([^\:]*)/) {
my $value = $1;	my $value = $1;
if ($priv eq 'bre') {	if ($priv eq 'bre') {
if ($noblockcheck) {	my $deeplinkblock;
	unless ($nodeeplinkcheck) {
	$deeplinkblock = &deeplink_check($priv,$symb,$refuri);
	}
	if ($deeplinkblock) {
	$thisallowed = 'D';
	} elsif ($noblockcheck) {
$thisallowed.=$value;	$thisallowed.=$value;
} else {	} else {
my @blockers = &has_comm_blocking($priv,$symb,$refuri);	my @blockers = &has_comm_blocking($priv,'',$refuri,'',1);
if (@blockers > 0) {	if (@blockers > 0) {
$thisallowed = 'B';	$thisallowed = 'B';
} else {	} else {
Line 8042 sub allowed {	Line 9069 sub allowed {
#	#

# Possibly locked functionality, check all courses	# Possibly locked functionality, check all courses
	# In roles.tab, L (unless locked) available for bre, pch, plc, pac and sma.
# Locks might take effect only after 10 minutes cache expiration for other	# Locks might take effect only after 10 minutes cache expiration for other
# courses, and 2 minutes for current course	# courses, and 2 minutes for current course, in which user has st or ta role
	# which is neither expired nor a future role (unless current course).

my $envkey;	my ($needlockcheck,$now,$crsonly);
if ($thisallowed=~/L/) {	if ($thisallowed=~/L/) {
foreach $envkey (keys(%env)) {	$now = time;
	if ($priv eq 'bre') {
	if ($uri ne '') {
	if ($orguri =~ m{^/+res/}) {
	if ($uri =~ m{^lib/templates/}) {
	if ($env{'request.course.id'}) {
	$crsonly = 1;
	$needlockcheck = 1;
	}
	} else {
	$needlockcheck = 1;
	}
	} elsif ($env{'request.course.id'}) {
	my ($crsdom,$crsnum) = split('_',$env{'request.course.id'});
	if (($uri =~ m{^(adm\|uploaded\|public)/$crsdom/$crsnum/}) \|\|
	($uri =~ m{^adm/$match_domain/$match_username/\d+/(smppg\|bulletinboard)$})) {
	$crsonly = 1;
	}
	$needlockcheck = 1;
	}
	}
	} elsif (($priv eq 'pch') \|\| ($priv eq 'plc') \|\| ($priv eq 'pac') \|\| ($priv eq 'sma')) {
	$needlockcheck = 1;
	}
	}
	if ($needlockcheck) {
	foreach my $envkey (keys(%env)) {
if ($envkey=~/^user\.role\.(st\|ta)\.([^\.]*)/) {	if ($envkey=~/^user\.role\.(st\|ta)\.([^\.]*)/) {
my $courseid=$2;	my $courseid=$2;
my $roleid=$1.'.'.$2;	my $roleid=$1.'.'.$2;
$courseid=~s/^\///;	$courseid=~s/^\///;
	unless ($env{'request.role'} eq $roleid) {
	my ($start,$end) = split(/\./,$env{$envkey});
	next unless (($now >= $start) && (!$end \|\| $end > $now));
	}
my $expiretime=600;	my $expiretime=600;
if ($env{'request.role'} eq $roleid) {	if ($env{'request.role'} eq $roleid) {
$expiretime=120;	$expiretime=120;
Line 8074 sub allowed {	Line 9133 sub allowed {
}	}
if (($env{$prefix.'priv.'.$priv.'.lock.sections'}=~/\,\Q$csec\E\,/)	if (($env{$prefix.'priv.'.$priv.'.lock.sections'}=~/\,\Q$csec\E\,/)
\|\| ($env{$prefix.'priv.'.$priv.'.lock.sections'} eq 'all')) {	\|\| ($env{$prefix.'priv.'.$priv.'.lock.sections'} eq 'all')) {
if ($env{'priv.'.$priv.'.lock.expire'}>time) {	if ($env{$prefix.'priv.'.$priv.'.lock.expire'}>time) {
&log($env{'user.domain'},$env{'user.name'},	&log($env{'user.domain'},$env{'user.name'},
$env{'user.home'},	$env{'user.home'},
'Locked by priv: '.$priv.' for '.$uri.' due to '.	'Locked by priv: '.$priv.' for '.$uri.' due to '.
Line 8086 sub allowed {	Line 9145 sub allowed {
}	}
}	}
}	}

#	#
# Rest of the restrictions depend on selected course	# Rest of the restrictions depend on selected course
#	#
Line 8113 sub allowed {	Line 9172 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 8123 sub allowed {	Line 9182 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 8145 sub allowed {	Line 9204 sub allowed {
}	}
}	}

	# Restricted for deeplinked session?

	if ($env{'request.deeplink.login'}) {
	if ($env{'acc.deeplinkout'} && !$nodeeplinkout) {
	if (!$symb) { $symb=&symbread($uri,1); }
	if (($symb) && ($env{'acc.deeplinkout'}=~/\&\Q$symb\E\&/)) {
	return '';
	}
	}
	}

# Restricted by state or randomout?	# Restricted by state or randomout?

if ($thisallowed=~/X/) {	if ($thisallowed=~/X/) {
Line 8165 sub allowed {	Line 9235 sub allowed {
return 'A';	return 'A';
} elsif ($thisallowed eq 'B') {	} elsif ($thisallowed eq 'B') {
return 'B';	return 'B';
	} elsif ($thisallowed eq 'D') {
	return 'D';
}	}
return 'F';	return 'F';
}	}
Line 8181 sub constructaccess {	Line 9253 sub constructaccess {
my ($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 8195 sub constructaccess {	Line 9267 sub constructaccess {
if (exists($env{'user.priv.au./'.$ownerdomain.'/./'})) {	if (exists($env{'user.priv.au./'.$ownerdomain.'/./'})) {
return ($ownername,$ownerdomain,$ownerhome);	return ($ownername,$ownerdomain,$ownerhome);
}	}
	} elsif (&is_course($ownerdomain,$ownername)) {
	# Course Authoring Space?
	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',$env{'request.course.id'})) {
	return if ($env{'course.'.$env{'request.course.id'}.'.internal.crsauthor'} eq '0');
	unless ($env{'course.'.$env{'request.course.id'}.'.internal.crsauthor'}) {
	my %domdefs = &get_domain_defaults($ownerdomain);
	my $type = lc($env{'course.'.$env{'request.course.id'}.'.type'});
	unless (($type eq 'community') \|\| ($type eq 'placement')) {
	$type = 'unofficial';
	if ($env{'course.'.$env{'request.course.id'}.'internal.coursecode'} ne '') {
	$type = 'official';
	} elsif ($env{'course.'.$env{'request.course.id'}.'internal.textbook'} ne '') {
	$type = 'textbook';
	} else {
	$type = 'unofficial';
	}
	}
	return if ($domdefs{$type.'crsauthor'} eq '0');
	}
	$ownerhome = $env{'course.'.$env{'request.course.id'}.'.home'};
	return ($ownername,$ownerdomain,$ownerhome);
	}
	}
	}
	return '';
} else {	} else {
# Co-author for this?	# Co-author for this?
if (exists($env{'user.priv.ca./'.$ownerdomain.'/'.$ownername.'./'}) \|\|	if (exists($env{'user.priv.ca./'.$ownerdomain.'/'.$ownername.'./'}) \|\|
Line 8244 sub constructaccess {	Line 9344 sub constructaccess {
#	#
# User for whom data are being temporarily cached.	# User for whom data are being temporarily cached.
my $cacheduser='';	my $cacheduser='';
# Cached blockers for this user (a hash of blocking items).	# Course for which data are being temporarily cached.
	my $cachedcid='';
	# Cached blockers for this user (a hash of blocking items).
my %cachedblockers=();	my %cachedblockers=();
# When the data were last cached.	# When the data were last cached.
my $cachedlast='';	my $cachedlast='';

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

sub get_comm_blocks {	sub get_comm_blocks {
Line 8275 sub get_comm_blocks {	Line 9380 sub get_comm_blocks {
if ((defined($cached)) && (ref($blocksref) eq 'HASH')) {	if ((defined($cached)) && (ref($blocksref) eq 'HASH')) {
%commblocks = %{$blocksref};	%commblocks = %{$blocksref};
} else {	} else {
%commblocks = &Apache::lonnet::dump('comm_block',$cdom,$cnum);	%commblocks = &dump('comm_block',$cdom,$cnum);
my $cachetime = 600;	my $cachetime = 600;
&do_cache_new('comm_block',$hashid,\%commblocks,$cachetime);	&do_cache_new('comm_block',$hashid,\%commblocks,$cachetime);
}	}
Line 8286 sub get_commblock_resources {	Line 9391 sub get_commblock_resources {
my ($blocks) = @_;	my ($blocks) = @_;
my %blockers = ();	my %blockers = ();
return %blockers unless ($env{'request.course.id'});	return %blockers unless ($env{'request.course.id'});
return %blockers if ($env{'user.priv.'.$env{'request.role'}} =~/evb\&([^\:]*)/);	my $courseurl = &courseid_to_courseurl($env{'request.course.id'});
	if ($env{'request.course.sec'}) {
	$courseurl .= '/'.$env{'request.course.sec'};
	}
	return %blockers if ($env{'user.priv.'.$env{'request.role'}.'.'.$courseurl} =~/evb\&([^\:]*)/);
my %commblocks;	my %commblocks;
if (ref($blocks) eq 'HASH') {	if (ref($blocks) eq 'HASH') {
%commblocks = %{$blocks};	%commblocks = %{$blocks};
} else {	} else {
%commblocks = &get_comm_blocks();	%commblocks = &get_comm_blocks();
}	}
return %blockers unless (keys(%commblocks) > 0);	return %blockers unless (keys(%commblocks) > 0);
my $navmap = Apache::lonnavmaps::navmap->new();	my $navmap = Apache::lonnavmaps::navmap->new();
return %blockers unless (ref($navmap));	return %blockers unless (ref($navmap));
my $now = time;	my $now = time;
Line 8305 sub get_commblock_resources {	Line 9414 sub get_commblock_resources {
if (ref($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{$block}{'blocks'}{'docs'}{'maps'}) eq 'HASH') {
if (keys(%{$commblocks{$block}{'blocks'}{'docs'}{'maps'}})) {	if (keys(%{$commblocks{$block}{'blocks'}{'docs'}{'maps'}})) {
$blockers{$block}{maps} = $commblocks{$block}{'blocks'}{'docs'}{'maps'};	$blockers{$block}{maps} = $commblocks{$block}{'blocks'}{'docs'}{'maps'};
}	}
}	}
if (ref($commblocks{$block}{'blocks'}{'docs'}{'resources'}) eq 'HASH') {	if (ref($commblocks{$block}{'blocks'}{'docs'}{'resources'}) eq 'HASH') {
Line 8318 sub get_commblock_resources {	Line 9427 sub get_commblock_resources {
}	}
} elsif ($block =~ /^firstaccess____(.+)$/) {	} elsif ($block =~ /^firstaccess____(.+)$/) {
my $item = $1;	my $item = $1;
my @to_test;
if (ref($commblocks{$block}{'blocks'}) eq 'HASH') {	if (ref($commblocks{$block}{'blocks'}) eq 'HASH') {
if (ref($commblocks{$block}{'blocks'}{'docs'}) eq 'HASH') {	if (ref($commblocks{$block}{'blocks'}{'docs'}) eq 'HASH') {
my @interval;	my (@interval,$mapname);
my $type = 'map';	my $type = 'map';
if ($item eq 'course') {	if ($item eq 'course') {
$type = 'course';	$type = 'course';
Line 8330 sub get_commblock_resources {	Line 9438 sub get_commblock_resources {
if ($item =~ /___\d+___/) {	if ($item =~ /___\d+___/) {
$type = 'resource';	$type = 'resource';
@interval=&EXT("resource.0.interval",$item);	@interval=&EXT("resource.0.interval",$item);
if (ref($navmap)) {
my $res = $navmap->getBySymb($item);
push(@to_test,$res);
}
} else {	} else {
my $mapsymb = &symbread($item,1);	$mapname = &deversion($item);
if ($mapsymb) {	if (ref($navmap)) {
if (ref($navmap)) {	my $timelimit = $navmap->get_mapparam(undef,$mapname,'0.interval');
my $mapres = $navmap->getBySymb($mapsymb);	@interval = ($timelimit,'map');
@to_test = $mapres->retrieveResources($mapres,undef,0,0,0,1);
foreach my $res (@to_test) {
my $symb = $res->symb();
next if ($symb eq $mapsymb);
if ($symb ne '') {
@interval=&EXT("resource.0.interval",$symb);
if ($interval[1] eq 'map') {
last;
}
}
}
}
}	}
}	}
}	}
if ($interval[0] =~ /^\d+$/) {	if ($interval[0] =~ /^(\d+)/) {
	my $timelimit = $1;
my $first_access;	my $first_access;
if ($type eq 'resource') {	if ($type eq 'resource') {
$first_access=&get_first_access($interval[1],$item);	$first_access=&get_first_access($interval[1],$item);
Line 8364 sub get_commblock_resources {	Line 9457 sub get_commblock_resources {
$first_access=&get_first_access($interval[1]);	$first_access=&get_first_access($interval[1]);
}	}
if ($first_access) {	if ($first_access) {
my $timesup = $first_access+$interval[0];	my $timesup = $first_access+$timelimit;
if ($timesup > $now) {	if ($timesup > $now) {
my $activeblock;	my $activeblock;
foreach my $res (@to_test) {	if ($type eq 'resource') {
if ($res->answerable()) {	if (ref($navmap)) {
$activeblock = 1;	my $res = $navmap->getBySymb($item);
last;	if ($res->answerable()) {
	$activeblock = 1;
	}
	}
	} elsif ($type eq 'map') {
	my $mapsymb = &symbread($mapname,1);
	if (($mapsymb) && (ref($navmap))) {
	my $mapres = $navmap->getBySymb($mapsymb);
	if (ref($mapres)) {
	my $first = $mapres->map_start();
	my $finish = $mapres->map_finish();
	my $it = $navmap->getIterator($first,$finish,undef,0,0);
	if (ref($it)) {
	my $res;
	while ($res = $it->next(undef,1)) {
	next unless (ref($res));
	my $symb = $res->symb();
	next if (($symb eq $mapsymb) \|\| ($symb eq ''));
	@interval=&EXT("resource.0.interval",$symb);
	if ($interval[1] eq 'map') {
	if ($res->answerable()) {
	$activeblock = 1;
	last;
	}
	}
	}
	}
	}
}	}
}	}
if ($activeblock) {	if ($activeblock) {
Line 8396 sub get_commblock_resources {	Line 9516 sub get_commblock_resources {
}	}

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

# -------------------------------- Deversion and split uri into path an filename	sub deeplink_check {
	my ($priv,$symb,$uri) = @_;
	return unless ($env{'request.course.id'});
	return unless ($priv eq 'bre');
	return if ($env{'request.state'} eq 'construct');
	return if ($env{'request.role.adv'});
	my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
	my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
	my (%possibles,@symbs);
	if (!$symb) {
	$symb = &symbread($uri,1,1,1,\%possibles);
	}
	if ($symb) {
	@symbs = ($symb);
	} elsif (keys(%possibles)) {
	@symbs = keys(%possibles);
	}

	my ($deeplink_symb,$allow);
	if ($env{'request.deeplink.login'}) {
	$deeplink_symb = &Apache::loncommon::deeplink_login_symb($cnum,$cdom);
	}
	foreach my $symb (@symbs) {
	last if ($allow);
	my $deeplink = &EXT("resource.0.deeplink",$symb);
	if ($deeplink eq '') {
	$allow = 1;
	} else {
	my ($state,$others,$listed,$scope,$protect) = split(/,/,$deeplink);
	if ($state ne 'only') {
	$allow = 1;
	} else {
	my $check_deeplink_entry;
	if ($protect ne 'none') {
	my ($acctype,$item) = split(/:/,$protect);
	if (($acctype eq 'ltic') && ($env{'user.linkprotector'})) {
	if (grep(/^\Q$item\Ec$/,split(/,/,$env{'user.linkprotector'}))) {
	$check_deeplink_entry = 1
	}
	} elsif (($acctype eq 'ltid') && ($env{'user.linkprotector'})) {
	if (grep(/^\Q$item\Ed$/,split(/,/,$env{'user.linkprotector'}))) {
	$check_deeplink_entry = 1;
	}
	} elsif (($acctype eq 'key') && ($env{'user.deeplinkkey'})) {
	if (grep(/^\Q$item\E$/,split(/,/,$env{'user.deeplinkkey'}))) {
	$check_deeplink_entry = 1;
	}
	}
	}
	if (($protect eq 'none') \|\| ($check_deeplink_entry)) {
	if ($scope eq 'res') {
	if ($symb eq $deeplink_symb) {
	$allow = 1;
	}
	} elsif (($scope eq 'map') \|\| ($scope eq 'rec')) {
	my ($map_from_symb,$map_from_login);
	$map_from_symb = &deversion((&decode_symb($symb))[0]);
	if ($deeplink_symb =~ /\.(page\|sequence)$/) {
	$map_from_login = &deversion((&decode_symb($deeplink_symb))[2]);
	} else {
	$map_from_login = &deversion((&decode_symb($deeplink_symb))[0]);
	}
	if (($map_from_symb) && ($map_from_login)) {
	if ($map_from_symb eq $map_from_login) {
	$allow = 1;
	} elsif ($scope eq 'rec') {
	my @recurseup = &get_map_hierarchy($map_from_symb,$env{'request.course.id'});
	if (grep(/^\Q$map_from_login\E$/,@recurseup)) {
	$allow = 1;
	}
	}
	}
	}
	}
	}
	}
	}
	return if ($allow);
	return 1;
	}

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

#	#
# Removes the version from a URI and	# Removes the version from a URI and
Line 8574 sub metadata_query {	Line 9789 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 8842 sub auto_validate_instcode {	Line 10057 sub auto_validate_instcode {
return ($outcome,$description,$defaultcredits);	return ($outcome,$description,$defaultcredits);
}	}

	sub auto_validate_inst_crosslist {
	my ($cnum,$cdom,$instcode,$inst_xlist,$coowner) = @_;
	my ($homeserver,$response);
	if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
	$homeserver = &homeserver($cnum,$cdom);
	}
	if (!defined($homeserver)) {
	if ($cdom =~ /^$match_domain$/) {
	$homeserver = &domain($cdom,'primary');
	}
	}
	unless (($homeserver eq '') \|\| ($homeserver eq 'no_host')) {
	$response=&reply('autovalidateinstcrosslist:'.$cdom.':'.
	&escape($instcode).':'.&escape($inst_xlist).':'.
	&escape($coowner),$homeserver);
	}
	return $response;
	}

sub auto_create_password {	sub auto_create_password {
my ($cnum,$cdom,$authparam,$udom) = @_;	my ($cnum,$cdom,$authparam,$udom) = @_;
my ($homeserver,$response);	my ($homeserver,$response);
Line 9113 sub auto_validate_class_sec {	Line 10347 sub auto_validate_class_sec {
return $response;	return $response;
}	}

	sub auto_instsec_reformat {
	my ($cdom,$action,$instsecref) = @_;
	return unless(($action eq 'clutter') \|\| ($action eq 'declutter'));
	my @homeservers;
	if (defined(&domain($cdom,'primary'))) {
	push(@homeservers,&domain($cdom,'primary'));
	} else {
	my %servers = &get_servers($cdom,'library');
	foreach my $tryserver (keys(%servers)) {
	if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
	push(@homeservers,$tryserver);
	}
	}
	}
	my $response;
	my %reformatted = %{$instsecref};
	foreach my $server (@homeservers) {
	if (ref($instsecref) eq 'HASH') {
	my $info = &freeze_escape($instsecref);
	my $response=&reply('autoinstsecreformat:'.$cdom.':'.
	$action.':'.$info,$server);
	next if ($response =~ /(con_lost\|error\|no_such_host\|refused\|unknown_command)/);
	my @items = split(/&/,$response);
	foreach my $item (@items) {
	my ($key,$value) = split(/=/,$item);
	$reformatted{&unescape($key)} = &thaw_unescape($value);
	}
	}
	}
	return %reformatted;
	}

sub auto_validate_instclasses {	sub auto_validate_instclasses {
my ($cdom,$cnum,$owners,$classesref) = @_;	my ($cdom,$cnum,$owners,$classesref) = @_;
my ($homeserver,%validations);	my ($homeserver,%validations);
Line 9156 sub auto_crsreq_update {	Line 10422 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 9313 sub toggle_coursegroup_status {	Line 10580 sub toggle_coursegroup_status {
}	}

sub modify_group_roles {	sub modify_group_roles {
my ($cdom,$cnum,$group_id,$user,$end,$start,$userprivs,$selfenroll,$context) = @_;	my ($cdom,$cnum,$group_id,$user,$end,$start,$userprivs,$selfenroll,$context,
	$othdomby,$requester) = @_;
my $url = '/'.$cdom.'/'.$cnum.'/'.$group_id;	my $url = '/'.$cdom.'/'.$cnum.'/'.$group_id;
my $role = 'gr/'.&escape($userprivs);	my $role = 'gr/'.&escape($userprivs);
my ($uname,$udom) = split(/:/,$user);	my ($uname,$udom) = split(/:/,$user);
my $result = &assignrole($udom,$uname,$url,$role,$end,$start,'',$selfenroll,$context);	my $result = &assignrole($udom,$uname,$url,$role,$end,$start,'',$selfenroll,$context,
	$othdomby,$requester);
if ($result eq 'ok') {	if ($result eq 'ok') {
&devalidate_getgroups_cache($udom,$uname,$cdom,$cnum);	&devalidate_getgroups_cache($udom,$uname,$cdom,$cnum);
}	}
Line 9416 sub plaintext {	Line 10685 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 9444 sub plaintext {	Line 10714 sub plaintext {

sub assignrole {	sub assignrole {
my ($udom,$uname,$url,$role,$end,$start,$deleteflag,$selfenroll,	my ($udom,$uname,$url,$role,$end,$start,$deleteflag,$selfenroll,
$context)=@_;	$context,$othdomby,$requester,$reqsec,$reqrole)=@_;
my $mrole;	my ($mrole,$rolelogcontext);
if ($role =~ /^cr\//) {	if ($role =~ /^cr\//) {
my $cwosec=$url;	my $cwosec=$url;
$cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;	$cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
unless (&allowed('ccr',$cwosec)) {	if ((!&allowed('ccr',$cwosec)) && (!&allowed('ccr',$udom))) {
my $refused = 1;	my $refused = 1;
if ($context eq 'requestcourses') {	if ($context eq 'requestcourses') {
if (($env{'user.name'} ne '') && ($env{'user.domain'} ne '')) {	if (($env{'user.name'} ne '') && ($env{'user.domain'} ne '')) {
if ($role =~ m{^cr/($match_domain)/($match_username)/([^/]+)$}) {	if ($role =~ m{^cr/($match_domain)/($match_username)/([^/]+)$}) {
if (($1 eq $env{'user.domain'}) && ($2 eq $env{'user.name'})) {	if (($1 eq $env{'user.domain'}) && ($2 eq $env{'user.name'})) {
my ($cdom,$cnum) = ($cwosec =~ m{^/?($match_domain)/($match_courseid)$});	my ($cdom,$cnum) = ($cwosec =~ m{^/?($match_domain)/($match_courseid)$});
my %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));	my %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
if ($crsenv{'internal.courseowner'} eq	if ($crsenv{'internal.courseowner'} eq
$env{'user.name'}.':'.$env{'user.domain'}) {	$env{'user.name'}.':'.$env{'user.domain'}) {
$refused = '';	$refused = '';
}	}
}	}
}	}
}	}
}	} elsif (($context eq 'course') && ($othdomby eq 'othdombyuser')) {
if ($refused) {	my ($cdom,$cnum) = ($cwosec =~ m{^/?($match_domain)/($match_courseid)$});
&logthis('Refused custom assignrole: '.	my ($sec) = ($url =~ m{^/\Q$cwosec\E/(.*)$});
$udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.	my $key = "$uname:$udom:$role:$sec";
' by '.$env{'user.name'}.' at '.$env{'user.domain'});	my %queuedrolereq = &Apache::lonnet::get('nohist_othdomqueued',[$key],$cdom,$cnum);
return 'refused';	if ((exists($queuedrolereq{$key})) && (ref($queuedrolereq{$key}) eq 'HASH')) {
}	if (($queuedrolereq{$key}{'adj'} eq 'user') && ($queuedrolereq{$key}{'requester'} eq $requester)) {
	$refused = '';
	}
	}
	}
	if ($refused) {
	&logthis('Refused custom assignrole: '.
	$udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.
	' by '.$env{'user.name'}.' at '.$env{'user.domain'});
	return 'refused';
	}
}	}
$mrole='cr';	$mrole='cr';
} elsif ($role =~ /^gr\//) {	} elsif ($role =~ /^gr\//) {
my $cwogrp=$url;	my $cwogrp=$url;
$cwogrp=~s{^/($match_domain)/($match_courseid)/.*}{$1/$2};	$cwogrp=~s{^/($match_domain)/($match_courseid)/.*}{$1/$2};
unless (&allowed('mdg',$cwogrp)) {	if (!&allowed('mdg',$cwogrp)) {
&logthis('Refused group assignrole: '.	my $refused = 1;
$udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.' by '.	if (($refused) && ($othdomby eq 'othdombyuser') && ($requester ne '') && ($reqrole ne '')) {
$env{'user.name'}.' at '.$env{'user.domain'});	my ($cdom,$cnum) = ($cwogrp =~ m{^/?($match_domain)/($match_courseid)$});
return 'refused';	my $key = "$uname:$udom:$reqrole:$reqsec";
	my %queuedrolereq = &Apache::lonnet::get('nohist_othdomqueued',[$key],$cdom,$cnum);
	if ((exists($queuedrolereq{$key})) && (ref($queuedrolereq{$key}) eq 'HASH')) {
	if (($queuedrolereq{$key}{'adj'} eq 'user') && ($queuedrolereq{$key}{'requester'} eq $requester)) {
	$refused = '';
	}
	}
	}
	if ($refused) {
	&logthis('Refused group assignrole: '.
	$udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.' by '.
	$env{'user.name'}.' at '.$env{'user.domain'});
	return 'refused';
	}
}	}
$mrole='gr';	$mrole='gr';
} else {	} else {
Line 9497 sub assignrole {	Line 10790 sub assignrole {
}	}
if ($refused) {	if ($refused) {
my ($cdom,$cnum) = ($cwosec =~ m{^/?($match_domain)/($match_courseid)$});	my ($cdom,$cnum) = ($cwosec =~ m{^/?($match_domain)/($match_courseid)$});
if (!$selfenroll && $context eq 'course') {	if (!$selfenroll && ($othdomby ne 'othdombyuser') &&
	(($context eq 'course') \|\| ($context eq 'ltienroll' && $env{'request.lti.login'}))) {
my %crsenv;	my %crsenv;
if ($role eq 'cc' \|\| $role eq 'co') {	if ($role eq 'cc' \|\| $role eq 'co') {
%crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));	%crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
Line 9517 sub assignrole {	Line 10811 sub assignrole {
}	}
}	}
}	}
} elsif (($selfenroll == 1) && ($role eq 'st') && ($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {	} elsif (($selfenroll == 1) && ($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
$refused = '';	if ($role eq 'st') {
	$refused = '';
	} elsif (($context eq 'ltienroll') && ($env{'request.lti.login'})) {
	$refused = '';
	}
	} elsif ($othdomby eq 'othdombyuser') {
	my ($key,%queuedrolereq);
	if ($context eq 'course') {
	my ($sec) = ($url =~ m{^/\Q$cwosec\E/(.*)$});
	$key = "$uname:$udom:$role:$sec";
	%queuedrolereq = &Apache::lonnet::get('nohist_othdomqueued',[$key],$cdom,$cnum);
	if ((exists($queuedrolereq{$key})) && (ref($queuedrolereq{$key}) eq 'HASH')) {
	if (($queuedrolereq{$key}{'adj'} eq 'user') && ($queuedrolereq{$key}{'requester'} eq $requester)) {
	if ((($role eq 'cc') && ($cnum !~ /^$match_community$/)) \|\|
	(($role eq 'co') && ($cnum =~ /^$match_community$/))) {
	my %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
	if ($crsenv{'internal.courseowner'} eq $requester) {
	$refused = '';
	}
	} elsif ($role =~ /^(?:in\|ta\|ep\|st)$/) {
	$refused = '';
	}
	}
	}
	} elsif (($context eq 'author') && ($role =~ /^ca\|aa$/)) {
	my $key = "$uname:$udom:$role";
	my ($audom,$auname) = ($url =~ m{^/($match_domain)/($match_username)$});
	if (($audom ne '') && ($auname ne '')) {
	my %queuedrolereq = &Apache::lonnet::get('nohist_othdomqueued',[$key],$audom,$auname);
	if ((exists($queuedrolereq{$key})) && (ref($queuedrolereq{$key}) eq 'HASH')) {
	if (($queuedrolereq{$key}{'adj'} eq 'user') && ($queuedrolereq{$key}{'requester'} eq $requester)) {
	$refused = '';
	}
	}
	}
	} elsif (($context eq 'domain') && ($role ne 'dc') && ($role ne 'su')) {
	my $key = "$uname:$udom:$role";
	my ($roledom) = ($url =~ m{^/($match_domain)/\Q$role\E$});
	if ($roledom ne '') {
	my $confname = $roledom.'-domainconfig';
	my %queuedrolereq = &Apache::lonnet::get('nohist_othdomqueued',[$key],$roledom,$confname);
	if ((exists($queuedrolereq{$key})) && (ref($queuedrolereq{$key}) eq 'HASH')) {
	if (($queuedrolereq{$key}{'adj'} eq 'user') && ($queuedrolereq{$key}{'requester'} eq $requester)) {
	$refused = '';
	}
	}
	}
	}
} elsif ($context eq 'requestcourses') {	} elsif ($context eq 'requestcourses') {
my @possroles = ('st','ta','ep','in','cc','co');	my @possroles = ('st','ta','ep','in','cc','co');
if ((grep(/^\Q$role\E$/,@possroles)) && ($env{'user.name'} ne '' && $env{'user.domain'} ne '')) {	if ((grep(/^\Q$role\E$/,@possroles)) && ($env{'user.name'} ne '' && $env{'user.domain'} ne '')) {
Line 9537 sub assignrole {	Line 10878 sub assignrole {
}	}
}	}
} elsif ($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 = '';	$refused = '';
Line 9545 sub assignrole {	Line 10886 sub assignrole {
my %domdefaults = &get_domain_defaults($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;	$checkbystatus = 1;
}	}
Line 9571 sub assignrole {	Line 10912 sub assignrole {
}	}
}	}
}	}
	} elsif (($context eq 'author') && (($role eq 'ca' \|\| $role eq 'aa'))) {
	if ($url =~ m{^/($match_domain)/($match_username)$}) {
	my ($audom,$auname) = ($1,$2);
	if ((&Apache::lonnet::allowed('v'.$role,"$audom/$auname")) &&
	($env{"environment.internal.manager.$url"})) {
	$refused = '';
	$rolelogcontext = 'coauthor';
	}
	}
}	}
if ($refused) {	if ($refused) {
&logthis('Refused assignrole: '.$udom.' '.$uname.' '.$url.	&logthis('Refused assignrole: '.$udom.' '.$uname.' '.$url.
Line 9631 sub assignrole {	Line 10981 sub assignrole {
$origstart,$selfenroll,$context);	$origstart,$selfenroll,$context);
}	}
&courserolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,	&courserolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,
$selfenroll,$context);	$selfenroll,$context,$othdomby,$requester);
} elsif (($role eq 'li') \|\| ($role eq 'dg') \|\| ($role eq 'sc') \|\|	} elsif (($role eq 'li') \|\| ($role eq 'dg') \|\| ($role eq 'sc') \|\|
($role eq 'au') \|\| ($role eq 'dc') \|\| ($role eq 'dh') \|\|	($role eq 'au') \|\| ($role eq 'dc') \|\| ($role eq 'dh') \|\|
($role eq 'da')) {	($role eq 'da')) {
&domainrolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,	&domainrolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,
$context);	$context,$othdomby,$requester);
} elsif (($role eq 'ca') \|\| ($role eq 'aa')) {	} elsif (($role eq 'ca') \|\| ($role eq 'aa')) {
	if ($rolelogcontext eq '') {
	$rolelogcontext = $context;
	}
&coauthorrolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,	&coauthorrolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,
$context);	$rolelogcontext,$othdomby,$requester);
}	}
if ($role eq 'cc') {	if ($role eq 'cc') {
&autoupdate_coowners($url,$end,$start,$uname,$udom);	&autoupdate_coowners($url,$end,$start,$uname,$udom);
Line 9657 sub autoupdate_coowners {	Line 11010 sub autoupdate_coowners {
if ($domdesign{$cdom.'.autoassign.co-owners'}) {	if ($domdesign{$cdom.'.autoassign.co-owners'}) {
my %coursehash = &coursedescription($cdom.'_'.$cnum);	my %coursehash = &coursedescription($cdom.'_'.$cnum);
my $instcode = $coursehash{'internal.coursecode'};	my $instcode = $coursehash{'internal.coursecode'};
	my $xlists = $coursehash{'internal.crosslistings'};
if ($instcode ne '') {	if ($instcode ne '') {
if (($start && $start <= $now) && ($end == 0) \|\| ($end > $now)) {	if (($start && $start <= $now) && ($end == 0) \|\| ($end > $now)) {
unless ($coursehash{'internal.courseowner'} eq $uname.':'.$udom) {	unless ($coursehash{'internal.courseowner'} eq $uname.':'.$udom) {
my ($delcoowners,@newcoowners,$putresult,$delresult,$coowners);	my ($delcoowners,@newcoowners,$putresult,$delresult,$coowners);
my ($result,$desc) = &auto_validate_instcode($cnum,$cdom,$instcode,$uname.':'.$udom);	my ($result,$desc) = &auto_validate_instcode($cnum,$cdom,$instcode,$uname.':'.$udom);
	unless ($result eq 'valid') {
	if ($xlists ne '') {
	foreach my $xlist (split(',',$xlists)) {
	my ($inst_crosslist,$lcsec) = split(':',$xlist);
	$result =
	&auto_validate_inst_crosslist($cnum,$cdom,$instcode,
	$inst_crosslist,$uname.':'.$udom);
	last if ($result eq 'valid');
	}
	}
	}
if ($result eq 'valid') {	if ($result eq 'valid') {
if ($coursehash{'internal.co-owners'}) {	if ($coursehash{'internal.co-owners'}) {
foreach my $coowner (split(',',$coursehash{'internal.co-owners'})) {	foreach my $coowner (split(',',$coursehash{'internal.co-owners'})) {
Line 9674 sub autoupdate_coowners {	Line 11039 sub autoupdate_coowners {
} else {	} else {
push(@newcoowners,$uname.':'.$udom);	push(@newcoowners,$uname.':'.$udom);
}	}
} else {	} elsif ($coursehash{'internal.co-owners'}) {
if ($coursehash{'internal.co-owners'}) {	foreach my $coowner (split(',',$coursehash{'internal.co-owners'})) {
foreach my $coowner (split(',',$coursehash{'internal.co-owners'})) {	unless ($coowner eq $uname.':'.$udom) {
unless ($coowner eq $uname.':'.$udom) {	push(@newcoowners,$coowner);
push(@newcoowners,$coowner);
}
}
unless (@newcoowners > 0) {
$delcoowners = 1;
$coowners = '';
}	}
}	}
	unless (@newcoowners > 0) {
	$delcoowners = 1;
	$coowners = '';
	}
}	}
if (@newcoowners \|\| $delcoowners) {	if (@newcoowners \|\| $delcoowners) {
&store_coowners($cdom,$cnum,$coursehash{'home'},	&store_coowners($cdom,$cnum,$coursehash{'home'},
Line 9724 sub store_coowners {	Line 11087 sub store_coowners {
}	}
if (($putresult eq 'ok') \|\| ($delresult eq 'ok')) {	if (($putresult eq 'ok') \|\| ($delresult eq 'ok')) {
my %crsinfo =	my %crsinfo =
&Apache::lonnet::courseiddump($cdom,'.',1,'.','.',$cnum,undef,undef,'.');	&courseiddump($cdom,'.',1,'.','.',$cnum,undef,undef,'.');
if (ref($crsinfo{$cid}) eq 'HASH') {	if (ref($crsinfo{$cid}) eq 'HASH') {
$crsinfo{$cid}{'co-owners'} = \@newcoowners;	$crsinfo{$cid}{'co-owners'} = \@newcoowners;
my $cidput = &Apache::lonnet::courseidput($cdom,\%crsinfo,$chome,'notime');	my $cidput = &courseidput($cdom,\%crsinfo,$chome,'notime');
}	}
}	}
}	}
Line 9738 sub store_coowners {	Line 11101 sub store_coowners {
sub modifyuserauth {	sub modifyuserauth {
my ($udom,$uname,$umode,$upass)=@_;	my ($udom,$uname,$umode,$upass)=@_;
my $uhome=&homeserver($uname,$udom);	my $uhome=&homeserver($uname,$udom);
unless (&allowed('mau',$udom)) { return 'refused'; }	my $allowed;
	if (&allowed('mau',$udom)) {
	$allowed = 1;
	} elsif (($umode eq 'internal') && ($udom eq $env{'user.domain'}) &&
	($env{'request.course.id'}) && (&allowed('mip',$env{'request.course.id'})) &&
	(!$env{'course.'.$env{'request.course.id'}.'.internal.nopasswdchg'})) {
	my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
	my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
	if (($cdom ne '') && ($cnum ne '')) {
	my $is_owner = &is_course_owner($cdom,$cnum);
	if ($is_owner) {
	$allowed = 1;
	}
	}
	}
	unless ($allowed) { return 'refused'; }
&logthis('Call to modify user authentication '.$udom.', '.$uname.', '.	&logthis('Call to modify user authentication '.$udom.', '.$uname.', '.
$umode.' by '.$env{'user.name'}.' at '.$env{'user.domain'}.	$umode.' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
' in domain '.$env{'request.role.domain'});	' in domain '.$env{'request.role.domain'});
my $reply=&reply('encrypt:changeuserauth:'.$udom.':'.$uname.':'.$umode.':'.	my $reply=&reply('encrypt:changeuserauth:'.$udom.':'.$uname.':'.$umode.':'.
&escape($upass),$uhome);	&escape($upass),$uhome);
	my $ip = &get_requestor_ip();
&log($env{'user.domain'},$env{'user.name'},$env{'user.home'},	&log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
'Authentication changed for '.$udom.', '.$uname.', '.$umode.	'Authentication changed for '.$udom.', '.$uname.', '.$umode.
'(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);	'(Remote '.$ip.'): '.$reply);
&log($udom,,$uname,$uhome,	&log($udom,,$uname,$uhome,
'Authentication changed by '.$env{'user.domain'}.', '.	'Authentication changed by '.$env{'user.domain'}.', '.
$env{'user.name'}.', '.$umode.	$env{'user.name'}.', '.$umode.
'(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);	'(Remote '.$ip.'): '.$reply);
unless ($reply eq 'ok') {	unless ($reply eq 'ok') {
&logthis('Authentication mode error: '.$reply);	&logthis('Authentication mode error: '.$reply);
return 'error: '.$reply;	return 'error: '.$reply;
Line 9784 sub modifyuser {	Line 11163 sub modifyuser {
my $newuser;	my $newuser;
if ($uhome eq 'no_host') {	if ($uhome eq 'no_host') {
$newuser = 1;	$newuser = 1;
	unless (($umode && ($upass ne '')) \|\| ($umode eq 'localauth') \|\|
	($umode eq 'lti')) {
	return 'error: more information needed to create new user';
	}
}	}
# ----------------------------------------------------------------- Create User	# ----------------------------------------------------------------- Create User
if (($uhome eq 'no_host') &&	if (($uhome eq 'no_host') &&
(($umode && $upass) \|\| ($umode eq 'localauth'))) {	(($umode && $upass) \|\| ($umode eq 'localauth') \|\| ($umode eq 'lti'))) {
my $unhome='';	my $unhome='';
if (defined($desiredhome) && &host_domain($desiredhome) eq $udom) {	if (defined($desiredhome) && &host_domain($desiredhome) eq $udom) {
$unhome = $desiredhome;	$unhome = $desiredhome;
Line 9829 sub modifyuser {	Line 11212 sub modifyuser {
'current user id "'.$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 9925 sub modifyuser {	Line 11308 sub modifyuser {
return 'error: '.$reply;	return 'error: '.$reply;
}	}
if ($names{'permanentemail'} ne $oldnames{'permanentemail'}) {	if ($names{'permanentemail'} ne $oldnames{'permanentemail'}) {
&Apache::lonnet::devalidate_cache_new('emailscache',$uname.':'.$udom);	&devalidate_cache_new('emailscache',$uname.':'.$udom);
}	}
my $sqlresult = &update_allusers_table($uname,$udom,\%names);	my $sqlresult = &update_allusers_table($uname,$udom,\%names);
&devalidate_cache_new('namescache',$uname.':'.$udom);	&devalidate_cache_new('namescache',$uname.':'.$udom);
Line 9954 sub modifystudent {	Line 11337 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,$instsec);	$cid,$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,$credits,$instsec) = @_;	$locktype,$cid,$selfenroll,$context,$credits,$instsec,$othdomby,$requester) = @_;
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 10005 sub modify_student_enrollment {	Line 11388 sub modify_student_enrollment {
}	}
my $fullname = &format_name($first,$middle,$last,$gene,'lastname');	my $fullname = &format_name($first,$middle,$last,$gene,'lastname');
my $user = "$uname:$udom";	my $user = "$uname:$udom";
my %old_entry = &Apache::lonnet::get('classlist',[$user],$cdom,$cnum);	my %old_entry = &get('classlist',[$user],$cdom,$cnum);
my $reply=cput('classlist',	my $reply=cput('classlist',
{$user =>	{$user =>
join(':',$end,$start,$uid,$usec,$fullname,$type,$locktype,$credits,$instsec) },	join(':',$end,$start,$uid,$usec,$fullname,$type,$locktype,$credits,$instsec) },
Line 10022 sub modify_student_enrollment {	Line 11405 sub modify_student_enrollment {
$uurl.='/'.$usec;	$uurl.='/'.$usec;
}	}
my $result = &assignrole($udom,$uname,$uurl,'st',$end,$start,undef,	my $result = &assignrole($udom,$uname,$uurl,'st',$end,$start,undef,
$selfenroll,$context);	$selfenroll,$context,$othdomby,$requester);
if ($result ne 'ok') {	if ($result ne 'ok') {
if ($old_entry{$user} ne '') {	if ($old_entry{$user} ne '') {
$reply = &cput('classlist',\%old_entry,$cdom,$cnum);	$reply = &cput('classlist',\%old_entry,$cdom,$cnum);
Line 10075 sub writecoursepref {	Line 11458 sub writecoursepref {

sub createcourse {	sub createcourse {
my ($udom,$description,$url,$course_server,$nonstandard,$inst_code,	my ($udom,$description,$url,$course_server,$nonstandard,$inst_code,
$course_owner,$crstype,$cnum,$context,$category)=@_;	$course_owner,$crstype,$cnum,$context,$category,$callercontext)=@_;
$url=&declutter($url);	$url=&declutter($url);
my $cid='';	my $cid='';
if ($context eq 'requestcourses') {	if ($context eq 'requestcourses') {
my $can_create = 0;	my $can_create = 0;
my ($ownername,$ownerdom) = split(':',$course_owner);	my ($ownername,$ownerdom) = split(':',$course_owner);
if ($udom eq $ownerdom) {	if ($udom eq $ownerdom) {
if (&usertools_access($ownername,$ownerdom,$category,undef,	my $reload;
	if (($callercontext eq 'auto') &&
	($ownerdom eq $env{'user.domain'}) && ($ownername eq $env{'user.name'})) {
	$reload = 'reload';
	}
	if (&usertools_access($ownername,$ownerdom,$category,$reload,
$context)) {	$context)) {
$can_create = 1;	$can_create = 1;
}	}
Line 10134 sub createcourse {	Line 11522 sub createcourse {
}	}
}	}
my %host_servers =	my %host_servers =
&Apache::lonnet::get_servers($udom,'library');	&get_servers($udom,'library');
unless ($host_servers{$course_server}) {	unless ($host_servers{$course_server}) {
return 'error: invalid home server for course: '.$course_server;	return 'error: invalid home server for course: '.$course_server;
}	}
Line 10231 sub generate_coursenum {	Line 11619 sub generate_coursenum {
sub is_course {	sub is_course {
my ($cdom, $cnum) = scalar(@_) == 1 ?	my ($cdom, $cnum) = scalar(@_) == 1 ?
($_[0] =~ /^($match_domain)_($match_courseid)$/) : @_;	($_[0] =~ /^($match_domain)_($match_courseid)$/) : @_;

return unless (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/));	return unless (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/));
my $uhome=&homeserver($cnum,$cdom);	my $uhome=&homeserver($cnum,$cdom);
my $iscourse;	my $iscourse;
Line 10249 sub is_course {	Line 11638 sub is_course {
&do_cache_new('iscourse',$hashid,$iscourse,3600);	&do_cache_new('iscourse',$hashid,$iscourse,3600);
}	}
}	}
return unless($iscourse);	return unless ($iscourse);
return wantarray ? ($cdom, $cnum) : $cdom.'_'.$cnum;	return wantarray ? ($cdom, $cnum) : $cdom.'_'.$cnum;
}	}

Line 10266 sub store_userdata {	Line 11655 sub store_userdata {
if (($uhome eq '') \|\| ($uhome eq 'no_host')) {	if (($uhome eq '') \|\| ($uhome eq 'no_host')) {
$result = 'error: no_host';	$result = 'error: no_host';
} else {	} else {
$storehash->{'ip'} = $ENV{'REMOTE_ADDR'};	$storehash->{'ip'} = &get_requestor_ip();
$storehash->{'host'} = $perlvar{'lonHostID'};	$storehash->{'host'} = $perlvar{'lonHostID'};

my $namevalue='';	my $namevalue='';
Line 10292 sub store_userdata {	Line 11681 sub store_userdata {
# ---------------------------------------------------------- Assign Custom Role	# ---------------------------------------------------------- Assign Custom Role

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

# ----------------------------------------------------------------- Revoke Role	# ----------------------------------------------------------------- Revoke Role
Line 10448 sub files_not_in_path {	Line 11839 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 10592 sub modify_access_controls {	Line 12067 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 10839 sub dirlist {	Line 12397 sub dirlist {
foreach my $user (sort(keys(%allusers))) {	foreach my $user (sort(keys(%allusers))) {
push(@alluserslist,$user.'&user');	push(@alluserslist,$user.'&user');
}	}

if (!%listerror) {	if (!%listerror) {
# no errors	# no errors
return (\@alluserslist);	return (\@alluserslist);
} elsif (scalar(keys(%servers)) == 1) {	} elsif (scalar(keys(%servers)) == 1) {
# one library server, one error	# one library server, one error
my ($key) = keys(%listerror);	my ($key) = keys(%listerror);
return (\@alluserslist, $listerror{$key});	return (\@alluserslist, $listerror{$key});
} elsif ( grep { $_ eq 'con_lost' } values(%listerror) ) {	} elsif ( grep { $_ eq 'con_lost' } values(%listerror) ) {
Line 10852 sub dirlist {	Line 12411 sub dirlist {
return (\@alluserslist, 'con_lost');	return (\@alluserslist, 'con_lost');
} else {	} else {
# multiple library servers and no con_lost -> data should be	# multiple library servers and no con_lost -> data should be
# complete.	# complete.
return (\@alluserslist);	return (\@alluserslist);
}	}

Line 10928 sub stat_file {	Line 12487 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, .bak and
	# .rights files in Authoring Space.
	#
	# Inputs:
	#
	# $is_home - true if current server is home server for user's space
	# $recurse - if true will also traverse subdirectories recursively
	# $include - reference to hash containing allowed file extensions. If provided,
	# files which do not have a matching extension will be ignored.
	# $exclude - reference to hash containing excluded file extensions. If provided,
	# files which have a matching extension will be ignored.
	# $nonemptydir - if true, will only populate $fileshashref hash entry for a particular
	# directory with first file found (with acceptable extension).
	# $addtopdir - if true, set $dirhashref->{'/'} = 1
	# $toppath - Top level directory (i.e., /res/$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 ($is_home,$recurse,$include,$exclude,$nonemptydir,$addtopdir,$toppath,$relpath,$dirhashref,$filehashref) = @_;
	return unless (ref($dirhashref) eq 'HASH');
	my $docroot = $perlvar{'lonDocRoot'};
	my $currpath = $docroot.$toppath;
	if ($relpath ne '') {
	$currpath .= "/$relpath";
	}
	my ($savefile,$checkinc,$checkexc);
	if (ref($filehashref)) {
	$savefile = 1;
	}
	if (ref($include) eq 'HASH') {
	$checkinc = 1;
	}
	if (ref($exclude) eq 'HASH') {
	$checkexc = 1;
	}
	if ($is_home) {
	if ((-e $currpath) && (opendir(my $dirh,$currpath))) {
	my $filecount = 0;
	foreach my $item (sort { lc($a) cmp lc($b) } grep(!/^\.+$/,readdir($dirh))) {
	next if ($item eq '');
	if (-d "$currpath/$item") {
	my $newpath;
	if ($relpath ne '') {
	$newpath = "$relpath/$item";
	} else {
	$newpath = $item;
	}
	$dirhashref->{&Apache::lonlocal::js_escape($newpath)} = 1;
	if ($recurse) {
	&recursedirs($is_home,$recurse,$include,$exclude,$nonemptydir,$addtopdir,$toppath,$newpath,$dirhashref,$filehashref);
	}
	} elsif (($savefile) \|\| ($relpath eq '')) {
	next if ($nonemptydir && $filecount);
	if ($checkinc \|\| $checkexc) {
	my ($extension) = ($item =~ /\.(\w+)$/);
	if ($checkinc) {
	next unless ($extension && $include->{$extension});
	}
	if ($checkexc) {
	next if ($extension && $exclude->{$extension});
	}
	}
	if (($relpath eq '') && (!exists($dirhashref->{'/'}))) {
	$dirhashref->{'/'} = 1;
	}
	if ($savefile) {
	if ($relpath eq '') {
	$filehashref->{'/'}{$item} = 1;
	} else {
	$filehashref->{&Apache::lonlocal::js_escape($relpath)}{$item} = 1;
	}
	}
	$filecount ++;
	}
	}
	closedir($dirh);
	}
	} else {
	my ($dirlistref,$listerror) =
	&dirlist($toppath.$relpath);
	my @dir_lines;
	my $dirptr=16384;
	if (ref($dirlistref) eq 'ARRAY') {
	my $filecount = 0;
	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 {
	$newpath = $item;
	}
	$dirhashref->{&Apache::lonlocal::js_escape($newpath)} = 1;
	if ($recurse) {
	&recursedirs($is_home,$recurse,$include,$exclude,$nonemptydir,$addtopdir,$toppath,$newpath,$dirhashref,$filehashref);
	}
	} elsif (($savefile) \|\| ($relpath eq '')) {
	next if ($nonemptydir && $filecount);
	if ($checkinc \|\| $checkexc) {
	my $extension;
	if ($checkinc) {
	next unless ($extension && $include->{$extension});
	}
	if ($checkexc) {
	next if ($extension && $exclude->{$extension});
	}
	}
	if (($relpath eq '') && (!exists($dirhashref->{'/'}))) {
	$dirhashref->{'/'} = 1;
	}
	if ($savefile) {
	if ($relpath eq '') {
	$filehashref->{'/'}{$item} = 1;
	} else {
	$filehashref->{&Apache::lonlocal::js_escape($relpath)}{$item} = 1;
	}
	}
	$filecount ++;
	}
	}
	}
	}
	if ($addtopdir) {
	if (($relpath eq '') && (!exists($dirhashref->{'/'}))) {
	$dirhashref->{'/'} = 1;
	}
	}
	return;
	}

	sub priv_exclude {
	return {
	meta => 1,
	save => 1,
	log => 1,
	bak => 1,
	rights => 1,
	DS_Store => 1,
	};
	}

# -------------------------------------------------------- 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 11091 sub get_userresdata {	Line 12817 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.
	# $what - Last part of param identifier.
# @which - Array of names of resources desired.	# @which - Array of names of resources desired.
# Returns:	# Returns:
# The value of the first reasource in @which that is found in the	# The value of the first reasource in @which that is found in the
Line 11101 sub get_userresdata {	Line 12834 sub get_userresdata {
# 'user', an undefined reference is returned.	# 'user', an undefined reference is returned.
# If none of the resources are found, an undef is returned	# If none of the resources are found, an undef is returned
sub resdata {	sub resdata {
my ($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,$domain);
Line 11110 sub resdata {	Line 12844 sub resdata {
}	}
if (!ref($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_numsuppfiles {	sub get_domain_lti {
my ($cnum,$cdom,$ignorecache)=@_;	my ($cdom,$context) = @_;
	my ($name,$cachename,%lti);
	if ($context eq 'consumer') {
	$name = 'ltitools';
	} elsif ($context eq 'provider') {
	$name = 'lti';
	} elsif ($context eq 'linkprot') {
	$name = 'ltisec';
	} else {
	return %lti;
	}
	if ($context eq 'linkprot') {
	$cachename = $context;
	} else {
	$cachename = $name;
	}
	my ($result,$cached)=&is_cached_new($cachename,$cdom);
	if (defined($cached)) {
	if (ref($result) eq 'HASH') {
	%lti = %{$result};
	}
	} else {
	my %domconfig = &get_dom('configuration',[$name],$cdom);
	if (ref($domconfig{$name}) eq 'HASH') {
	if ($context eq 'linkprot') {
	if (ref($domconfig{$name}{'linkprot'}) eq 'HASH') {
	%lti = %{$domconfig{$name}{'linkprot'}};
	}
	} else {
	%lti = %{$domconfig{$name}};
	}
	}
	my $cachetime = 246060;
	&do_cache_new($cachename,$cdom,\%lti,$cachetime);
	}
	return %lti;
	}

	sub get_course_lti {
	my ($cnum,$cdom,$context) = @_;
	my ($name,$cachename,%lti);
	if ($context eq 'consumer') {
	$name = 'ltitools';
	$cachename = 'courseltitools';
	} elsif ($context eq 'provider') {
	$name = 'lti';
	$cachename = 'courselti';
	} else {
	return %lti;
	}
	my $hashid=$cdom.'_'.$cnum;
	my ($result,$cached)=&is_cached_new($cachename,$hashid);
	if (defined($cached)) {
	if (ref($result) eq 'HASH') {
	%lti = %{$result};
	}
	} else {
	%lti = &dump($name,$cdom,$cnum,undef,undef,undef,1);
	my $cachetime = 246060;
	&do_cache_new($cachename,$hashid,\%lti,$cachetime);
	}
	return %lti;
	}

	sub courselti_itemid {
	my ($cnum,$cdom,$url,$method,$params,$context) = @_;
	my ($chome,$itemid);
	$chome = &homeserver($cnum,$cdom);
	return if ($chome eq 'no_host');
	if (ref($params) eq 'HASH') {
	my $rep;
	if (grep { $_ eq $chome } current_machine_ids()) {
	$rep = LONCAPA::Lond::crslti_itemid($cdom,$cnum,$url,$method,$params,$perlvar{'lonVersion'});
	} else {
	my $escurl = &escape($url);
	my $escmethod = &escape($method);
	my $items = &freeze_escape($params);
	$rep = &reply("encrypt:lti:$cdom:$cnum:$context:$escurl:$escmethod:$items",$chome);
	}
	unless (($rep=~/^(refused\|rejected\|error)/) \|\| ($rep eq 'con_lost') \|\|
	($rep eq 'unknown_cmd')) {
	$itemid = $rep;
	}
	}
	return $itemid;
	}

	sub domainlti_itemid {
	my ($cdom,$url,$method,$params,$context) = @_;
	my ($primary_id,$itemid);
	$primary_id = &domain($cdom,'primary');
	return if ($primary_id eq '');
	if (ref($params) eq 'HASH') {
	my $rep;
	if (grep { $_ eq $primary_id } current_machine_ids()) {
	$rep = LONCAPA::Lond::domlti_itemid($cdom,$context,$url,$method,$params,$perlvar{'lonVersion'});
	} else {
	my $cnum = '';
	my $escurl = &escape($url);
	my $escmethod = &escape($method);
	my $items = &freeze_escape($params);
	$rep = &reply("encrypt:lti:$cdom:$cnum:$context:$escurl:$escmethod:$items",$primary_id);
	}
	unless (($rep=~/^(refused\|rejected\|error)/) \|\| ($rep eq 'con_lost') \|\|
	($rep eq 'unknown_cmd')) {
	$itemid = $rep;
	}
	}
	return $itemid;
	}

	sub get_ltitools_id {
	my ($context,$cdom,$cnum,$title) = @_;
	my ($lockhash,$tries,$gotlock,$id,$error);

	# get lock on ltitools db
	$lockhash = {
	lock => $env{'user.name'}.
	':'.$env{'user.domain'},
	};
	$tries = 0;
	if ($context eq 'domain') {
	$gotlock = &newput_dom('ltitools',$lockhash,$cdom);
	} else {
	$gotlock = &newput('ltitools',$lockhash,$cdom,$cnum);
	}
	while (($gotlock ne 'ok') && ($tries<10)) {
	$tries ++;
	sleep (0.1);
	if ($context eq 'domain') {
	$gotlock = &newput_dom('ltitools',$lockhash,$cdom);
	} else {
	$gotlock = &newput('ltitools',$lockhash,$cdom,$cnum);
	}
	}
	if ($gotlock eq 'ok') {
	my %currids;
	if ($context eq 'domain') {
	%currids = &dump_dom('ltitools',$cdom);
	} else {
	%currids = &dump('ltitools',$cdom,$cnum);
	}
	if ($currids{'lock'}) {
	delete($currids{'lock'});
	if (keys(%currids)) {
	my @curr = sort { $a <=> $b } keys(%currids);
	if ($curr[-1] =~ /^\d+$/) {
	$id = 1 + $curr[-1];
	}
	} else {
	$id = 1;
	}
	if ($id) {
	if ($context eq 'domain') {
	unless (&newput_dom('ltitools',{ $id => $title },$cdom) eq 'ok') {
	$error = 'nostore';
	}
	} else {
	unless (&newput('ltitools',{ $id => $title },$cdom,$cnum) eq 'ok') {
	$error = 'nostore';
	}
	}
	} else {
	$error = 'nonumber';
	}
	}
	my $dellockoutcome;
	if ($context eq 'domain') {
	$dellockoutcome = &del_dom('ltitools',['lock'],$cdom);
	} else {
	$dellockoutcome = &del('ltitools',['lock'],$cdom,$cnum);
	}
	} else {
	$error = 'nolock';
	}
	return ($id,$error);
	}

	sub count_supptools {
	my ($cnum,$cdom,$ignorecache,$reload)=@_;
	my $hashid=$cnum.':'.$cdom;
	my ($numexttools,$cached);
	unless ($ignorecache) {
	($numexttools,$cached) = &is_cached_new('supptools',$hashid);
	}
	unless (defined($cached)) {
	my $chome=&homeserver($cnum,$cdom);
	$numexttools = 0;
	unless ($chome eq 'no_host') {
	my ($supplemental) = &Apache::loncommon::get_supplemental($cnum,$cdom,$reload);
	if (ref($supplemental) eq 'HASH') {
	if ((ref($supplemental->{'ids'}) eq 'HASH') && (ref($supplemental->{'hidden'}) eq 'HASH')) {
	foreach my $key (keys(%{$supplemental->{'ids'}})) {
	if ($key =~ m{^/adm/$cdom/$cnum/\d+/ext\.tool$}) {
	$numexttools ++;
	}
	}
	}
	}
	}
	&do_cache_new('supptools',$hashid,$numexttools,600);
	}
	return $numexttools;
	}

	sub has_unhidden_suppfiles {
	my ($cnum,$cdom,$ignorecache,$possdel)=@_;
my $hashid=$cnum.':'.$cdom;	my $hashid=$cnum.':'.$cdom;
my ($suppcount,$cached);	my ($showsupp,$cached);
unless ($ignorecache) {	unless ($ignorecache) {
($suppcount,$cached) = &is_cached_new('suppcount',$hashid);	($showsupp,$cached) = &is_cached_new('showsupp',$hashid);
}	}
unless (defined($cached)) {	unless (defined($cached)) {
my $chome=&homeserver($cnum,$cdom);	my $chome=&homeserver($cnum,$cdom);
unless ($chome eq 'no_host') {	unless ($chome eq 'no_host') {
($suppcount,my $errors) = (0,0);	my ($supplemental) = &Apache::loncommon::get_supplemental($cnum,$cdom,$ignorecache,$possdel);
my $suppmap = 'supplemental.sequence';	if (ref($supplemental) eq 'HASH') {
($suppcount,$errors) =	if ((ref($supplemental->{'ids'}) eq 'HASH') && (ref($supplemental->{'hidden'}) eq 'HASH')) {
&Apache::loncommon::recurse_supplemental($cnum,$cdom,$suppmap,$suppcount,$errors);	foreach my $key (keys(%{$supplemental->{'ids'}})) {
	next if ($key =~ /\.sequence$/);
	if (ref($supplemental->{'ids'}->{$key}) eq 'ARRAY') {
	foreach my $id (@{$supplemental->{'ids'}->{$key}}) {
	unless ($supplemental->{'hidden'}->{$id}) {
	$showsupp = 1;
	last;
	}
	}
	}
	last if ($showsupp);
	}
	}
	}
}	}
&do_cache_new('suppcount',$hashid,$suppcount,600);	&do_cache_new('showsupp',$hashid,$showsupp,600);
}	}
return $suppcount;	return $showsupp;
}	}

#	#
# 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 11165 sub EXT_cache_set {	Line 13142 sub EXT_cache_set {
# --------------------------------------------------------- Value of a Variable	# --------------------------------------------------------- Value of a Variable
sub EXT {	sub EXT {

my ($varname,$symbparm,$udom,$uname,$usection,$recurse,$cid)=@_;	my ($varname,$symbparm,$udom,$uname,$usection,$recurse,$cid,$recurseupref)=@_;
unless ($varname) { return ''; }	unless ($varname) { return ''; }
#get real user name/domain, courseid and symb	#get real user name/domain, courseid and symb
my $courseid;	my $courseid;
Line 11197 sub EXT {	Line 13174 sub EXT {
if ( (defined($Apache::lonhomework::parsing_a_problem)	if ( (defined($Apache::lonhomework::parsing_a_problem)
\|\| defined($Apache::lonhomework::parsing_a_task))	\|\| defined($Apache::lonhomework::parsing_a_task))
&&	&&
($symbparm eq &symbread()) ) {	($symbparm eq &symbread()) ) {
# if we are in the middle of processing the resource the	# if we are in the middle of processing the resource the
# get the value we are planning on committing	# get the value we are planning on committing
if (defined($Apache::lonhomework::results{$qualifierrest})) {	if (defined($Apache::lonhomework::results{$qualifierrest})) {
Line 11318 sub EXT {	Line 13295 sub EXT {
}	}
}	}

my ($section, $group, @groups);	my ($section, $group, @groups, @recurseup, $recursed);
my ($courselevelm,$courselevel);	if (ref($recurseupref) eq 'ARRAY') {
	@recurseup = @{$recurseupref};
	$recursed = 1;
	}
	my ($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 11351 sub EXT {	Line 13331 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 11369 sub EXT {	Line 13353 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 11394 sub EXT {	Line 13381 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 11403 sub EXT {	Line 13391 sub EXT {
} else {	} else {
$filename=$env{'request.filename'};	$filename=$env{'request.filename'};
}	}
my $metadata=&metadata($filename,$spacequalifierrest);	my $toolsymb;
	if (($filename =~ /ext\.tool$/) && ($what ne '0_gradable')) {
	$toolsymb = $symbparm;
	}
	my $metadata=&metadata($filename,$what,$toolsymb);
if (defined($metadata)) { return &get_reply([$metadata,'resource']); }	if (defined($metadata)) { return &get_reply([$metadata,'resource']); }
$metadata=&metadata($filename,'parameter_'.$spacequalifierrest);	$metadata=&metadata($filename,'parameter_'.$what,$toolsymb);
if (defined($metadata)) { return &get_reply([$metadata,'resource']); }	if (defined($metadata)) { return &get_reply([$metadata,'resource']); }

# ---------------------------------------------- fourth, look in rest of course	# ----------------------------------------------- fifth, look in rest of course
if ($symbparm && defined($courseid) &&	if ($symbparm && defined($courseid) &&
$courseid eq $env{'request.course.id'}) {	$courseid eq $env{'request.course.id'}) {
my $coursereply=&resdata($env{'course.'.$courseid.'.num'},	my $coursereply=&resdata($env{'course.'.$courseid.'.num'},
$env{'course.'.$courseid.'.domain'},	$env{'course.'.$courseid.'.domain'},
'course',	'course',$mapp,\$recursed,\@recurseup,
	$courseid,'.',$spacequalifierrest,
([$courselevelm,'map' ],	([$courselevelm,'map' ],
	[$courseleveli,'map' ],
[$courselevel, 'course']));	[$courselevel, 'course']));
if (defined($coursereply)) { return &get_reply($coursereply); }	if (defined($coursereply)) { return &get_reply($coursereply); }
}	}
Line 11429 sub EXT {	Line 13423 sub EXT {
if (defined($partgeneral[0])) { return &get_reply(\@partgeneral); }	if (defined($partgeneral[0])) { return &get_reply(\@partgeneral); }
}	}
if ($recurse) { return undef; }	if ($recurse) { return undef; }
my $pack_def=&packages_tab_default($filename,$varname);	my $pack_def=&packages_tab_default($filename,$varname,$toolsymb);
if (defined($pack_def)) { return &get_reply([$pack_def,'resource']); }	if (defined($pack_def)) { return &get_reply([$pack_def,'resource']); }
# ---------------------------------------------------- Any other user namespace	# ---------------------------------------------------- Any other user namespace
} elsif ($realm eq 'environment') {	} elsif ($realm eq 'environment') {
Line 11454 sub EXT {	Line 13448 sub EXT {
if ($space eq 'name') {	if ($space eq 'name') {
return $ENV{'SERVER_NAME'};	return $ENV{'SERVER_NAME'};
}	}
	} elsif ($realm eq 'client') {
	if ($space eq 'remote_addr') {
	return &get_requestor_ip();
	}
}	}
return '';	return '';
}	}
Line 11471 sub get_reply {	Line 13469 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 11494 sub sort_course_groups { # Sort groups b	Line 13521 sub sort_course_groups { # Sort groups b
}	}

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

my (@extension,@specifics,$do_default);	my (@extension,@specifics,$do_default);
foreach my $package (split(/,/,&metadata($uri,'packages'))) {	foreach my $package (split(/,/,&metadata($uri,'packages',$toolsymb))) {
my ($pack_type,$pack_part)=split(/_/,$package,2);	my ($pack_type,$pack_part)=split(/_/,$package,2);
if ($pack_type eq 'default') {	if ($pack_type eq 'default') {
$do_default=1;	$do_default=1;
Line 11567 my %metaentry;	Line 13594 my %metaentry;
my %importedpartids;	my %importedpartids;
my %importedrespids;	my %importedrespids;
sub metadata {	sub metadata {
my ($uri,$what,$liburi,$prefix,$depthcount)=@_;	my ($uri,$what,$toolsymb,$liburi,$prefix,$depthcount)=@_;
$uri=&declutter($uri);	$uri=&declutter($uri);
# if it is a non metadata possible uri return quickly	# if it is a non metadata possible uri return quickly
if (($uri eq '') \|\|	if (($uri eq '') \|\|
(($uri =~ m\|^/*adm/\|) &&	(($uri =~ m\|^/*adm/\|) &&
($uri !~ m\|^adm/includes\|) && ($uri !~ m{/(smppg\|bulletinboard)$})) \|\|	($uri !~ m\|^adm/includes\|) && ($uri !~ m{/(smppg\|bulletinboard\|ext\.tool)$})) \|\|
($uri =~ m\|/$\|) \|\| ($uri =~ m\|/.meta$\|) \|\| ($uri =~ m{^/*uploaded/.+\.sequence$})) {	($uri =~ m\|/$\|) \|\| ($uri =~ m\|/.meta$\|) \|\| ($uri =~ m{^/*uploaded/.+\.sequence$})) {
return undef;	return undef;
}	}
Line 11591 sub metadata {	Line 13618 sub metadata {
my ($result,$cached)=&is_cached_new('meta',$uri);	my ($result,$cached)=&is_cached_new('meta',$uri);
if (defined($cached)) { return $result->{':'.$what}; }	if (defined($cached)) { return $result->{':'.$what}; }
}	}

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

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

{	{
# Imported parts would go here	# Imported parts would go here
my @origfiletagids=();	my @origfiletagids=();
Line 11699 sub metadata {	Line 13785 sub metadata {
# Check metadata for imported file to	# Check metadata for imported file to
# see if it contained response items	# see if it contained response items
#	#
	my ($origfile,@libfilekeys);
my %currmetaentry = %metaentry;	my %currmetaentry = %metaentry;
my $libresponseorder = &metadata($location,'responseorder');	@libfilekeys = split(/,/,&metadata($location,'keys',undef,undef,undef,
my $origfile;	$depthcount+1));
if ($libresponseorder ne '') {	if (grep(/^responseorder$/,@libfilekeys)) {
if ($#origfiletagids<0) {	my $libresponseorder = &metadata($location,'responseorder',undef,undef,
undef(%importedrespids);	undef,$depthcount+1);
undef(%importedpartids);	if ($libresponseorder ne '') {
}	if ($#origfiletagids<0) {
@{$importedrespids{$importid}} = split(/\s,\s/,$libresponseorder);	undef(%importedrespids);
if (@{$importedrespids{$importid}} > 0) {	undef(%importedpartids);
$importedresponses = 1;	}
	my @respids = split(/\s,\s/,$libresponseorder);
	if (@respids) {
	$importedrespids{$importid} = join(',',map { $importid.'_'.$_ } @respids);
	}
	if ($importedrespids{$importid} ne '') {
	$importedresponses = 1;
# We need to get the original file and the imported file to get the response order correct	# We need to get the original file and the imported file to get the response order correct
# Load and inspect original file	# Load and inspect original file
if ($#origfiletagids<0) {	if ($#origfiletagids<0) {
my $origfilelocation=$perlvar{'lonDocRoot'}.&clutter($uri);	my $origfilelocation=$perlvar{'lonDocRoot'}.&clutter($uri);
$origfile=&getfile($origfilelocation);	$origfile=&getfile($origfilelocation);
@origfiletagids=($origfile=~/<((?:\w+)response\|import\|part)[^>]id\s=\s[\"\']([^\"\']+)[\"\'][^>]>/gs);	@origfiletagids=($origfile=~/<((?:\w+)response\|import\|part)[^>]id\s=\s[\"\']([^\"\']+)[\"\'][^>]>/gs);
	}
}	}
}	}
}	}
Line 11723 sub metadata {	Line 13817 sub metadata {
# hash populated for imported library file	# hash populated for imported library file
%metaentry = %currmetaentry;	%metaentry = %currmetaentry;
undef(%currmetaentry);	undef(%currmetaentry);
if ($importmode eq 'problem') {	if ($importmode eq 'part') {
# Import as problem/response
$unikey=&add_prefix_and_part($prefix,$token->[2]->{'part'});
} elsif ($importmode eq 'part') {
# Import as part(s)	# Import as part(s)
$importedparts=1;	$importedparts=1;
# We need to get the original file and the imported file to get the part order correct	# We need to get the original file and the imported file to get the part order correct
Line 11741 sub metadata {	Line 13832 sub metadata {
@origfiletagids=($origfile=~/<(part\|import)[^>]id\s=\s[\"\']([^\"\']+)[\"\'][^>]>/gs);	@origfiletagids=($origfile=~/<(part\|import)[^>]id\s=\s[\"\']([^\"\']+)[\"\'][^>]>/gs);
}	}
}	}
	my @impfilepartids;
# Load and inspect imported file	# If <partorder> tag is included in metadata for the imported file
my $impfile=&getfile($location);	# get the parts in the imported file from that.
my @impfilepartids=($impfile=~/<part[^>]id\s=\s[\"\']([^\"\']+)[\"\'][^>]>/gs);	if (grep(/^partorder$/,@libfilekeys)) {
	%currmetaentry = %metaentry;
	my $libpartorder = &metadata($location,'partorder',undef,undef,undef,
	$depthcount+1);
	%metaentry = %currmetaentry;
	undef(%currmetaentry);
	if ($libpartorder ne '') {
	@impfilepartids=split(/\s,\s/,$libpartorder);
	}
	} else {
	# If no <partorder> tag available, load and inspect imported file
	my $impfile=&getfile($location);
	@impfilepartids=($impfile=~/<part[^>]id\s=\s[\"\']([^\"\']+)[\"\'][^>]>/gs);
	}
if ($#impfilepartids>=0) {	if ($#impfilepartids>=0) {
# This problem had parts	# This problem had parts
$importedpartids{$token->[2]->{'id'}}=join(',',@impfilepartids);	$importedpartids{$token->[2]->{'id'}}=join(',',@impfilepartids);
Line 11755 sub metadata {	Line 13859 sub metadata {
$importedpartids{$token->[2]->{'id'}}=$token->[2]->{'id'};	$importedpartids{$token->[2]->{'id'}}=$token->[2]->{'id'};
}	}
} else {	} else {
	# Import as problem or as normal import
	$unikey=&add_prefix_and_part($prefix,$token->[2]->{'part'});
	unless ($importmode eq 'problem') {
# Normal import	# Normal import
$unikey=&add_prefix_and_part($prefix,$token->[2]->{'part'});	if (defined($token->[2]->{'id'})) {
if (defined($token->[2]->{'id'})) {	$unikey.='_'.$token->[2]->{'id'};
$unikey.='_'.$token->[2]->{'id'};	}
}	}
	# Check metadata for imported file to
	# see if it contained parts
	if (grep(/^partorder$/,@libfilekeys)) {
	%currmetaentry = %metaentry;
	my $libpartorder = &metadata($location,'partorder',undef,undef,undef,
	$depthcount+1);
	%metaentry = %currmetaentry;
	undef(%currmetaentry);
	if ($libpartorder ne '') {
	$importedparts = 1;
	$importedpartids{$token->[2]->{'id'}}=$libpartorder;
	}
	}
}	}

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

}	}
} else {	} else {
#	#
Line 11839 sub metadata {	Line 13957 sub metadata {
$dir=~s\|[^/]*$\|\|;	$dir=~s\|[^/]*$\|\|;
$location=&filelocation($dir,$location);	$location=&filelocation($dir,$location);
my $rights_metadata =	my $rights_metadata =
&metadata($uri,'keys',$location,'_rights',	&metadata($uri,'keys',$toolsymb,$location,'_rights',
$depthcount+1);	$depthcount+1);
foreach my $rights (split(',',$rights_metadata)) {	foreach my $rights (split(',',$rights_metadata)) {
#$metaentry{':'.$rights}=$metacache{$uri}->{':'.$rights};	#$metaentry{':'.$rights}=$metacache{$uri}->{':'.$rights};
Line 11860 sub metadata {	Line 13978 sub metadata {
$metathesekeys{'partorder'}=1;	$metathesekeys{'partorder'}=1;
}	}
if ($importedresponses) {	if ($importedresponses) {
# We had imported responses and need to rebuild responseorder	# We had imported responses and need to rebuil responseorder
$metaentry{':responseorder'}='';	$metaentry{':responseorder'}='';
$metathesekeys{'responseorder'}=1;	$metathesekeys{'responseorder'}=1;
}	}
Line 11874 sub metadata {	Line 13992 sub metadata {
} elsif ($origfiletagids[$index] eq 'import') {	} elsif ($origfiletagids[$index] eq 'import') {
if ($importedparts) {	if ($importedparts) {
# We have imported parts at this position	# We have imported parts at this position
$metaentry{':partorder'}.=','.$importedpartids{$origid};	if ($importedpartids{$origid} ne '') {
	$metaentry{':partorder'}.=','.$importedpartids{$origid};
	}
}	}
if ($importedresponses) {	if ($importedresponses) {
# We have imported responses at this position	# We have imported responses at this position
if (ref($importedrespids{$origid}) eq 'ARRAY') {	if ($importedrespids{$origid} ne '') {
$metaentry{':responseorder'}.=','.join(',',map { $origid.'_'.$_ } @{$importedrespids{$origid}});	$metaentry{':responseorder'}.=','.$importedrespids{$origid};
}	}
}	}
} else {	} else {
Line 11896 sub metadata {	Line 14016 sub metadata {
$metaentry{':responseorder'}=~s/^\,//;	$metaentry{':responseorder'}=~s/^\,//;
}	}
}	}

$metaentry{':keys'} = join(',',keys(%metathesekeys));	$metaentry{':keys'} = join(',',keys(%metathesekeys));
&metadata_generate_part0(\%metathesekeys,\%metaentry,$uri);	&metadata_generate_part0(\%metathesekeys,\%metaentry,$uri);
$metaentry{':allpossiblekeys'}=join(',',keys(%metathesekeys));	$metaentry{':allpossiblekeys'}=join(',',keys(%metathesekeys));
&do_cache_new('meta',$uri,\%metaentry,$cachetime);	unless ($liburi) {
	&do_cache_new('meta',$uri,\%metaentry,$cachetime);
	}
# this is the end of "was not already recently cached	# this is the end of "was not already recently cached
}	}
return $metaentry{':'.$what};	return $metaentry{':'.$what};
Line 12056 sub get_reservable_slots {	Line 14177 sub get_reservable_slots {
sub get_course_slots {	sub get_course_slots {
my ($cnum,$cdom) = @_;	my ($cnum,$cdom) = @_;
my $hashid=$cnum.':'.$cdom;	my $hashid=$cnum.':'.$cdom;
my ($result,$cached) = &Apache::lonnet::is_cached_new('allslots',$hashid);	my ($result,$cached) = &is_cached_new('allslots',$hashid);
if (defined($cached)) {	if (defined($cached)) {
if (ref($result) eq 'HASH') {	if (ref($result) eq 'HASH') {
return %{$result};	return %{$result};
}	}
} else {	} else {
my %slots=&Apache::lonnet::dump('slots',$cdom,$cnum);	my %slots=&dump('slots',$cdom,$cnum);
my ($tmp) = keys(%slots);	my ($tmp) = keys(%slots);
if ($tmp !~ /^(con_lost\|error\|no_such_host)/i) {	if ($tmp !~ /^(con_lost\|error\|no_such_host)/i) {
&do_cache_new('allslots',$hashid,\%slots,600);	&do_cache_new('allslots',$hashid,\%slots,600);
Line 12108 sub get_coursechange {	Line 14229 sub get_coursechange {
}	}

sub devalidate_coursechange_cache {	sub devalidate_coursechange_cache {
my ($cnum,$cdom)=@_;	my ($cdom,$cnum)=@_;
my $hashid=$cnum.':'.$cdom;	my $hashid=$cdom.'_'.$cnum;
&devalidate_cache_new('crschange',$hashid);	&devalidate_cache_new('crschange',$hashid);
}	}

	sub get_suppchange {
	my ($cdom,$cnum) = @_;
	if ($cdom eq '' \|\| $cnum eq '') {
	return unless ($env{'request.course.id'});
	$cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
	$cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
	}
	my $hashid=$cdom.'_'.$cnum;
	my ($change,$cached)=&is_cached_new('suppchange',$hashid);
	if ((defined($cached)) && ($change ne '')) {
	return $change;
	} else {
	my %crshash = &get('environment',['internal.supplementalchange'],$cdom,$cnum);
	if ($crshash{'internal.supplementalchange'} eq '') {
	$change = $env{'course.'.$cdom.'_'.$cnum.'.internal.created'};
	if ($change eq '') {
	%crshash = &get('environment',['internal.created'],$cdom,$cnum);
	$change = $crshash{'internal.created'};
	}
	} else {
	$change = $crshash{'internal.supplementalchange'};
	}
	my $cachetime = 600;
	&do_cache_new('suppchange',$hashid,$change,$cachetime);
	}
	return $change;
	}

	sub devalidate_suppchange_cache {
	my ($cdom,$cnum)=@_;
	my $hashid=$cdom.'_'.$cnum;
	&devalidate_cache_new('suppchange',$hashid);
	}

	sub update_supp_caches {
	my ($cdom,$cnum) = @_;
	my %servers = &internet_dom_servers($cdom);
	my @ids=&current_machine_ids();
	foreach my $server (keys(%servers)) {
	next if (grep(/^\Q$server\E$/,@ids));
	my $hashid=$cnum.':'.$cdom;
	my $cachekey = &escape('showsupp').':'.&escape($hashid);
	&remote_devalidate_cache($server,[$cachekey]);
	}
	&has_unhidden_suppfiles($cnum,$cdom,1,1);
	&count_supptools($cnum,$cdom,1);
	my $now = time;
	if ($env{'request.course.id'} eq $cdom.'_'.$cnum) {
	&Apache::lonnet::appenv({'request.course.suppupdated' => $now});
	}
	&put('environment',{'internal.supplementalchange' => $now},
	$cdom,$cnum);
	&Apache::lonnet::appenv(
	{'course.'.$cdom.'_'.$cnum.'.internal.supplementalchange' => $now});
	&do_cache_new('suppchange',$cdom.'_'.$cnum,$now,600);
	}

# ------------------------------------------------- Update symbolic store links	# ------------------------------------------------- Update symbolic store links

sub symblist {	sub symblist {
Line 12159 sub symbverify {	Line 14337 sub symbverify {

if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',	if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
&GDBM_READER(),0640)) {	&GDBM_READER(),0640)) {
my $noclutter;
if (($thisurl =~ m{^/adm/wrapper/ext/}) \|\| ($thisurl =~ m{^ext/})) {	if (($thisurl =~ m{^/adm/wrapper/ext/}) \|\| ($thisurl =~ m{^ext/})) {
$thisurl =~ s/\?.+$//;	$thisurl =~ s/\?.+$//;
if ($map =~ m{^uploaded/.+\.page$}) {	if ($map =~ m{^uploaded/.+\.page$}) {
$thisurl =~ s{^(/adm/wrapper\|)/ext/}{http://};	$thisurl =~ s{^(/adm/wrapper\|)/ext/}{http://};
$thisurl =~ s{^\Qhttp://https://\E}{https://};	$thisurl =~ s{^\Qhttp://https://\E}{https://};
$noclutter = 1;
}	}
}	}
my $ids;	my $ids;
if ($noclutter) {	if ($map =~ m{^uploaded/.+\.page$}) {
$ids=$bighash{'ids_'.$thisurl};	$ids=$bighash{'ids_'.&clutter_with_no_wrapper($thisurl)};
} else {	} else {
$ids=$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 ($ids) {
Line 12191 sub symbverify {	Line 14367 sub symbverify {
if (ref($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 12270 sub deversion {	Line 14446 sub deversion {
# ------------------------------------------------------ Return symb list entry	# ------------------------------------------------------ Return symb list entry

sub symbread {	sub symbread {
my ($thisfn,$donotrecurse,$ignorecachednull,$checkforblock,$possibles)=@_;	my ($thisfn,$donotrecurse,$ignorecachednull,$checkforblock,$possibles,
	$ignoresymbdb,$noenccheck)=@_;
my $cache_str='request.symbread.cached.'.$thisfn;	my $cache_str='request.symbread.cached.'.$thisfn;
if (defined($env{$cache_str})) {	if (defined($env{$cache_str})) {
if ($ignorecachednull) {	unless (ref($possibles) eq 'HASH') {
return $env{$cache_str} unless ($env{$cache_str} eq '');	if ($ignorecachednull) {
} else {	return $env{$cache_str} unless ($env{$cache_str} eq '');
return $env{$cache_str};	} else {
	return $env{$cache_str};
	}
}	}
}	}
# no filename provided? try from environment	# no filename provided? try from environment
unless ($thisfn) {	unless ($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 12298 sub symbread {	Line 14477 sub symbread {
my %bighash;	my %bighash;
my $syval='';	my $syval='';
if (($env{'request.course.fn'}) && ($thisfn)) {	if (($env{'request.course.fn'}) && ($thisfn)) {
my $targetfn = $thisfn;	unless ($ignoresymbdb) {
if ( ($thisfn =~ m/^(uploaded\|editupload)\//) && ($thisfn !~ m/\.(page\|sequence)$/) ) {	if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
$targetfn = 'adm/wrapper/'.$thisfn;	&GDBM_READER(),0640)) {
}	$syval=$hash{$thisfn};
if ($targetfn =~ m\|^adm/wrapper/(ext/.*)\|) {	untie(%hash);
$targetfn=$1;	}
}	if ($syval && $checkforblock) {
if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',	my @blockers = &has_comm_blocking('bre',$syval,$thisfn,$ignoresymbdb,$noenccheck);
&GDBM_READER(),0640)) {	if (@blockers) {
$syval=$hash{$targetfn};	$syval='';
untie(%hash);	}
	}
}	}
# ---------------------------------------------------------- There was an entry	# ---------------------------------------------------------- There was an entry
if ($syval) {	if ($syval) {
Line 12341 sub symbread {	Line 14521 sub symbread {
$syval=&encode_symb($bighash{'map_id_'.$mapid},	$syval=&encode_symb($bighash{'map_id_'.$mapid},
$resid,$thisfn);	$resid,$thisfn);
if (ref($possibles) eq 'HASH') {	if (ref($possibles) eq 'HASH') {
$possibles->{$syval} = 1;	unless ($bighash{'randomout_'.$ids} \|\| $env{'request.role.adv'}) {
	$possibles->{$syval} = 1;
	}
}	}
if ($checkforblock) {	if ($checkforblock) {
my @blockers = &has_comm_blocking('bre',$syval,$bighash{'src_'.$ids});	unless ($bighash{'randomout_'.$ids} \|\| $env{'request.role.adv'}) {
if (@blockers) {	my @blockers = &has_comm_blocking('bre',$syval,$bighash{'src_'.$ids},'',$noenccheck);
$syval = '';	if (@blockers) {
return;	$syval = '';
	untie(%bighash);
	return $env{$cache_str}='';
	}
}	}
}	}
} elsif ((!$donotrecurse) \|\| ($checkforblock) \|\| (ref($possibles) eq 'HASH')) {	} elsif ((!$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) {
Line 12358 sub symbread {	Line 14543 sub symbread {
my $canaccess;	my $canaccess;
if (($donotrecurse) \|\| ($checkforblock) \|\| (ref($possibles) eq 'HASH')) {	if (($donotrecurse) \|\| ($checkforblock) \|\| (ref($possibles) eq 'HASH')) {
$canaccess = 1;	$canaccess = 1;
} else {	} else {
$canaccess = &allowed('bre',$file);	$canaccess = &allowed('bre',$file);
}	}
if ($canaccess) {	if ($canaccess) {
my ($mapid,$resid)=split(/\./,$id);	my ($mapid,$resid)=split(/\./,$id);
if ($bighash{'map_type_'.$mapid} ne 'page') {	if ($bighash{'map_type_'.$mapid} ne 'page') {
my $poss_syval=&encode_symb($bighash{'map_id_'.$mapid},	my $poss_syval=&encode_symb($bighash{'map_id_'.$mapid},
$resid,$thisfn);	$resid,$thisfn);
if (ref($possibles) eq 'HASH') {	next if ($bighash{'randomout_'.$id} && !$env{'request.role.adv'});
$possibles->{$syval} = 1;	next unless (($noenccheck) \|\| ($bighash{'encrypted_'.$id} eq $env{'request.enc'}));
}
if ($checkforblock) {	if ($checkforblock) {
my @blockers = &has_comm_blocking('bre',$poss_syval,$file);	my @blockers = &has_comm_blocking('bre',$poss_syval,$file,'',$noenccheck);
unless (@blockers > 0) {	if (@blockers > 0) {
	$syval = '';
	} else {
$syval = $poss_syval;	$syval = $poss_syval;
$realpossible++;	$realpossible++;
}	}
Line 12379 sub symbread {	Line 14565 sub symbread {
$syval = $poss_syval;	$syval = $poss_syval;
$realpossible++;	$realpossible++;
}	}
	if ($syval) {
	if (ref($possibles) eq 'HASH') {
	$possibles->{$syval} = 1;
	}
	}
}	}
}	}
}	}
Line 12540 sub rndseed {	Line 14731 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 12725 sub rndseed_CODE_64bit5 {	Line 14917 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 12909 sub repcopy_userfile {	Line 15101 sub repcopy_userfile {
}	}
# now the path exists for sure	# now the path exists for sure
# get a user agent	# get a user agent
my $ua=new LWP::UserAgent;
my $transferfile=$file.'.in.transfer';	my $transferfile=$file.'.in.transfer';
# FIXME: this should flock	# FIXME: this should flock
if (-e $transferfile) { return 'ok'; }	if (-e $transferfile) { return 'ok'; }
my $request;	my $request;
$uri=~s/^\///;	$uri=~s/^\///;
my $homeserver = &homeserver($cnum,$cdom);	my $homeserver = &homeserver($cnum,$cdom);
	my $hostname = &hostname($homeserver);
my $protocol = $protocol{$homeserver};	my $protocol = $protocol{$homeserver};
$protocol = 'http' if ($protocol ne 'https');	$protocol = 'http' if ($protocol ne 'https');
$request=new HTTP::Request('GET',$protocol.'://'.&hostname($homeserver).'/raw/'.$uri);	$request=new HTTP::Request('GET',$protocol.'://'.$hostname.'/raw/'.$uri);
my $response=$ua->request($request,$transferfile);	my $response = &LONCAPA::LWPReq::makerequest($homeserver,$request,$transferfile,\%perlvar,'',0,1);
# did it work?	# did it work?
if ($response->is_error()) {	if ($response->is_error()) {
unlink($transferfile);	unlink($transferfile);
Line 12942 sub tokenwrapper {	Line 15134 sub tokenwrapper {
$file=~s\|(\?\.)$\|\|;	$file=~s\|(\?\.)$\|\|;
&appenv({"userfile.$udom/$uname/$file" => $env{'request.course.id'}});	&appenv({"userfile.$udom/$uname/$file" => $env{'request.course.id'}});
my $homeserver = &homeserver($uname,$udom);	my $homeserver = &homeserver($uname,$udom);
	my $hostname = &hostname($homeserver);
my $protocol = $protocol{$homeserver};	my $protocol = $protocol{$homeserver};
$protocol = 'http' if ($protocol ne 'https');	$protocol = 'http' if ($protocol ne 'https');
return $protocol.'://'.&hostname($homeserver).'/'.$uri.	return $protocol.'://'.$hostname.'/'.$uri.
(($uri=~/\?/)?'&':'?').'token='.$token.	(($uri=~/\?/)?'&':'?').'token='.$token.
'&tokenissued='.$perlvar{'lonHostID'};	'&tokenissued='.$perlvar{'lonHostID'};
} else {	} else {
Line 12960 sub getuploaded {	Line 15153 sub getuploaded {
my ($reqtype,$uri,$cdom,$cnum,$info,$rtncode) = @_;	my ($reqtype,$uri,$cdom,$cnum,$info,$rtncode) = @_;
$uri=~s/^\///;	$uri=~s/^\///;
my $homeserver = &homeserver($cnum,$cdom);	my $homeserver = &homeserver($cnum,$cdom);
	my $hostname = &hostname($homeserver);
my $protocol = $protocol{$homeserver};	my $protocol = $protocol{$homeserver};
$protocol = 'http' if ($protocol ne 'https');	$protocol = 'http' if ($protocol ne 'https');
$uri = $protocol.'://'.&hostname($homeserver).'/raw/'.$uri;	$uri = $protocol.'://'.$hostname.'/raw/'.$uri;
my $ua=new LWP::UserAgent;
my $request=new HTTP::Request($reqtype,$uri);	my $request=new HTTP::Request($reqtype,$uri);
my $response=$ua->request($request);	my $response=&LONCAPA::LWPReq::makerequest($homeserver,$request,'',\%perlvar,'',0,1);
$$rtncode = $response->code;	$$rtncode = $response->code;
if (! $response->is_success()) {	if (! $response->is_success()) {
return 'failed';	return 'failed';
Line 13095 sub machine_ids {	Line 15288 sub machine_ids {

sub additional_machine_domains {	sub additional_machine_domains {
my @domains;	my @domains;
open(my $fh,"<","$perlvar{'lonTabDir'}/expected_domains.tab");	if (-e "$perlvar{'lonTabDir'}/expected_domains.tab") {
while( my $line = <$fh>) {	if (open(my $fh,"<","$perlvar{'lonTabDir'}/expected_domains.tab")) {
$line =~ s/\s//g;	while (my $line = <$fh>) {
push(@domains,$line);	chomp($line);
	$line =~ s/\s//g;
	push(@domains,$line);
	}
	close($fh);
	}
}	}
return @domains;	return @domains;
}	}
Line 13117 sub default_login_domain {	Line 15315 sub default_login_domain {
}	}

sub shared_institution {	sub shared_institution {
my ($dom) = @_;	my ($dom,$lonhost) = @_;
	if ($lonhost eq '') {
	$lonhost = $perlvar{'lonHostID'};
	}
my $same_intdom;	my $same_intdom;
my $hostintdom = &internet_dom($perlvar{'lonHostID'});	my $hostintdom = &internet_dom($lonhost);
if ($hostintdom ne '') {	if ($hostintdom ne '') {
my %iphost = &get_iphost();	my %iphost = &get_iphost();
my $primary_id = &domain($dom,'primary');	my $primary_id = &domain($dom,'primary');
Line 13137 sub shared_institution {	Line 15338 sub shared_institution {
return $same_intdom;	return $same_intdom;
}	}

	sub uses_sts {
	my ($ignore_cache) = @_;
	my $lonhost = $perlvar{'lonHostID'};
	my $hostname = &hostname($lonhost);
	my $sts_on;
	if ($protocol{$lonhost} eq 'https') {
	my $cachetime = 12*3600;
	if (!$ignore_cache) {
	($sts_on,my $cached)=&is_cached_new('stspolicy',$lonhost);
	if (defined($cached)) {
	return $sts_on;
	}
	}
	my $url = $protocol{$lonhost}.'://'.$hostname.'/index.html';
	my $request=new HTTP::Request('HEAD',$url);
	my $response=&LONCAPA::LWPReq::makerequest($lonhost,$request,'',\%perlvar,'','','',1);
	if ($response->is_success) {
	my $has_sts = $response->header('Strict-Transport-Security');
	if ($has_sts eq '') {
	$sts_on = 0;
	} else {
	if ($has_sts =~ /\Qmax-age=\E(\d+)/) {
	my $maxage = $1;
	if ($maxage) {
	$sts_on = 1;
	} else {
	$sts_on = 0;
	}
	} else {
	$sts_on = 0;
	}
	}
	return &do_cache_new('stspolicy',$lonhost,$sts_on,$cachetime);
	}
	}
	return;
	}

	sub waf_allssl {
	my ($host_name) = @_;
	my $alias = &get_proxy_alias();
	if ($host_name eq '') {
	$host_name = $ENV{'SERVER_NAME'};
	}
	if (($host_name ne '') && ($alias eq $host_name)) {
	my $serverhomedom = &host_domain($perlvar{'lonHostID'});
	my %defdomdefaults = &get_domain_defaults($serverhomedom);
	if ($defdomdefaults{'waf_sslopt'}) {
	return $defdomdefaults{'waf_sslopt'};
	}
	}
	return;
	}

	sub get_requestor_ip {
	my ($r,$nolookup,$noproxy) = @_;
	my $from_ip;
	if (ref($r)) {
	if ($r->can('useragent_ip')) {
	if ($noproxy && $r->can('client_ip')) {
	$from_ip = $r->client_ip();
	} else {
	$from_ip = $r->useragent_ip();
	}
	} elsif ($r->connection->can('remote_ip')) {
	$from_ip = $r->connection->remote_ip();
	} else {
	$from_ip = $r->get_remote_host($nolookup);
	}
	} else {
	$from_ip = $ENV{'REMOTE_ADDR'};
	}
	return $from_ip if ($noproxy);
	# Who controls proxy settings for server
	my $dom_in_use = $Apache::lonnet::perlvar{'lonDefDomain'};
	my $proxyinfo = &get_proxy_settings($dom_in_use);
	if ((ref($proxyinfo) eq 'HASH') && ($from_ip)) {
	if ($proxyinfo->{'vpnint'}) {
	if (&ip_match($from_ip,$proxyinfo->{'vpnint'})) {
	return $from_ip;
	}
	}
	if ($proxyinfo->{'trusted'}) {
	if (&ip_match($from_ip,$proxyinfo->{'trusted'})) {
	my $ipheader = $proxyinfo->{'ipheader'};
	my ($ip,$xfor);
	if (ref($r)) {
	if ($ipheader) {
	$ip = $r->headers_in->{$ipheader};
	}
	$xfor = $r->headers_in->{'X-Forwarded-For'};
	} else {
	if ($ipheader) {
	$ip = $ENV{'HTTP_'.uc($ipheader)};
	}
	$xfor = $ENV{'HTTP_X_FORWARDED_FOR'};
	}
	if (($ip eq '') && ($xfor ne '')) {
	foreach my $poss_ip (reverse(split(/\s,\s/,$xfor))) {
	unless (&ip_match($poss_ip,$proxyinfo->{'trusted'})) {
	$ip = $poss_ip;
	last;
	}
	}
	}
	if ($ip ne '') {
	return $ip;
	}
	}
	}
	}
	return $from_ip;
	}

	sub get_proxy_settings {
	my ($dom_in_use) = @_;
	my %domdefaults = &get_domain_defaults($dom_in_use);
	my $proxyinfo = {
	ipheader => $domdefaults{'waf_ipheader'},
	trusted => $domdefaults{'waf_trusted'},
	vpnint => $domdefaults{'waf_vpnint'},
	vpnext => $domdefaults{'waf_vpnext'},
	sslopt => $domdefaults{'waf_sslopt'},
	};
	return $proxyinfo;
	}

	sub ip_match {
	my ($ip,$pattern_str) = @_;
	$ip=Net::CIDR::cidrvalidate($ip);
	if ($ip) {
	return Net::CIDR::cidrlookup($ip,split(/\s,\s/,$pattern_str));
	}
	return;
	}

	sub get_proxy_alias {
	my ($lonid) = @_;
	if ($lonid eq '') {
	$lonid = $perlvar{'lonHostID'};
	}
	if (!defined(&hostname($lonid))) {
	return;
	}
	if ($lonid ne '') {
	my ($alias,$cached) = &is_cached_new('proxyalias',$lonid);
	if ($cached) {
	return $alias;
	}
	my $dom = &host_domain($lonid);
	if ($dom ne '') {
	my $cachetime = 606024;
	my %domconfig =
	&get_dom('configuration',['wafproxy'],$dom);
	if (ref($domconfig{'wafproxy'}) eq 'HASH') {
	if (ref($domconfig{'wafproxy'}{'alias'}) eq 'HASH') {
	$alias = $domconfig{'wafproxy'}{'alias'}{$lonid};
	}
	}
	return &do_cache_new('proxyalias',$lonid,$alias,$cachetime);
	}
	}
	return;
	}

	sub use_proxy_alias {
	my ($r,$lonid) = @_;
	my $alias = &get_proxy_alias($lonid);
	if ($alias) {
	my $dom = &host_domain($lonid);
	if ($dom ne '') {
	my $proxyinfo = &get_proxy_settings($dom);
	my ($vpnint,$remote_ip);
	if (ref($proxyinfo) eq 'HASH') {
	$vpnint = $proxyinfo->{'vpnint'};
	if ($vpnint) {
	$remote_ip = &get_requestor_ip($r,1,1);
	}
	}
	unless ($vpnint && &ip_match($remote_ip,$vpnint)) {
	return $alias;
	}
	}
	}
	return;
	}

	sub alias_sso {
	my ($lonid) = @_;
	if ($lonid eq '') {
	$lonid = $perlvar{'lonHostID'};
	}
	if (!defined(&hostname($lonid))) {
	return;
	}
	if ($lonid ne '') {
	my ($use_alias,$cached) = &is_cached_new('proxysaml',$lonid);
	if ($cached) {
	return $use_alias;
	}
	my $dom = &host_domain($lonid);
	if ($dom ne '') {
	my $cachetime = 606024;
	my %domconfig =
	&get_dom('configuration',['wafproxy'],$dom);
	if (ref($domconfig{'wafproxy'}) eq 'HASH') {
	if (ref($domconfig{'wafproxy'}{'saml'}) eq 'HASH') {
	$use_alias = $domconfig{'wafproxy'}{'saml'}{$lonid};
	}
	}
	return &do_cache_new('proxysaml',$lonid,$use_alias,$cachetime);
	}
	}
	return;
	}

	sub get_saml_landing {
	my ($lonid) = @_;
	if ($lonid eq '') {
	my $defdom = &default_login_domain();
	my @hosts = &current_machine_ids();
	if (@hosts > 1) {
	foreach my $hostid (@hosts) {
	if (&host_domain($hostid) eq $defdom) {
	$lonid = $hostid;
	last;
	}
	}
	} else {
	$lonid = $perlvar{'lonHostID'};
	}
	if ($lonid) {
	unless (&host_domain($lonid) eq $defdom) {
	return;
	}
	} else {
	return;
	}
	} elsif (!defined(&hostname($lonid))) {
	return;
	}
	my ($landing,$cached) = &is_cached_new('samllanding',$lonid);
	if ($cached) {
	return $landing;
	}
	my $dom = &host_domain($lonid);
	if ($dom ne '') {
	my $cachetime = 606024;
	my %domconfig =
	&get_dom('configuration',['login'],$dom);
	if (ref($domconfig{'login'}) eq 'HASH') {
	if (ref($domconfig{'login'}{'saml'}) eq 'HASH') {
	if (ref($domconfig{'login'}{'saml'}{$lonid}) eq 'HASH') {
	$landing = 1;
	}
	}
	}
	return &do_cache_new('samllanding',$lonid,$landing,$cachetime);
	}
	return;
	}

# ------------------------------------------------------------- Declutters URLs	# ------------------------------------------------------------- Declutters URLs

sub declutter {	sub declutter {
Line 13187 sub clutter {	Line 15650 sub clutter {
# &logthis("Got a blank emb style");	# &logthis("Got a blank emb style");
}	}
}	}
	} elsif ($thisfn =~ m{^/adm/$match_domain/$match_courseid/\d+/ext\.tool$}) {
	$thisfn='/adm/wrapper'.$thisfn;
}	}
return $thisfn;	return $thisfn;
}	}
Line 13252 sub get_dns {	Line 15717 sub get_dns {
my ($url,$func,$ignore_cache,$nocache,$hashref) = @_;	my ($url,$func,$ignore_cache,$nocache,$hashref) = @_;
if (!$ignore_cache) {	if (!$ignore_cache) {
my ($content,$cached)=	my ($content,$cached)=
&Apache::lonnet::is_cached_new('dns',$url);	&is_cached_new('dns',$url);
if ($cached) {	if ($cached) {
&$func($content,$hashref);	&$func($content,$hashref);
return;	return;
Line 13274 sub get_dns {	Line 15739 sub get_dns {
}	}
while (%alldns) {	while (%alldns) {
my ($dns) = sort { $b cmp $a } keys(%alldns);	my ($dns) = sort { $b cmp $a } keys(%alldns);
my $ua=new LWP::UserAgent;	my ($contents,@content);
$ua->timeout(30);	if ($dns eq Sys::Hostname::FQDN::fqdn()) {
my $request=new HTTP::Request('GET',"$alldns{$dns}://$dns$url");	my $command = (split('/',$url))[3];
my $response=$ua->request($request);	my ($dir,$file) = &parse_getdns_url($command,$url);
delete($alldns{$dns});	delete($alldns{$dns});
next if ($response->is_error());	next if (($dir eq '') \|\| ($file eq ''));
my @content = split("\n",$response->content);	if (open(my $config,'<',"$dir/$file")) {
unless ($nocache) {	@content = <$config>;
&do_cache_new('dns',$url,\@content,302460*60);	close($config);
	}
	if ($url eq '/adm/dns/loncapaCRL') {
	$contents = join('',@content);
	}
	} else {
	my $request=new HTTP::Request('GET',"$alldns{$dns}://$dns$url");
	my $response = &LONCAPA::LWPReq::makerequest('',$request,'',\%perlvar,30,0);
	delete($alldns{$dns});
	next if ($response->is_error());
	if ($url eq '/adm/dns/loncapaCRL') {
	$contents = $response->content;
	} else {
	@content = split("\n",$response->content);
	}
	}
	if ($url eq '/adm/dns/loncapaCRL') {
	return &$func($contents);
	} else {
	unless ($nocache) {
	&do_cache_new('dns',$url,\@content,302460*60);
	}
	&$func(\@content,$hashref);
	return;
}	}
&$func(\@content,$hashref);
return;
}	}
my $which = (split('/',$url))[3];	my $which = (split('/',$url,4))[3];
&logthis("unable to contact DNS defaulting to on disk file dns_$which.tab\n");	if ($which eq 'loncapaCRL') {
if (open(my $config,"<","$perlvar{'lonTabDir'}/dns_$which.tab")) {	my $diskfile = "$perlvar{'lonCertificateDirectory'}/$perlvar{'lonnetCertRevocationList'}";
my @content = <$config>;	if (-e $diskfile) {
&$func(\@content,$hashref);	&logthis("unable to contact DNS, on disk file $diskfile not updated");
	} else {
	&logthis("unable to contact DNS, no on disk file $diskfile available");
	}
	} else {
	&logthis("unable to contact DNS defaulting to on disk file dns_$which.tab\n");
	if (open(my $config,"<","$perlvar{'lonTabDir'}/dns_$which.tab")) {
	my @content = <$config>;
	close($config);
	&$func(\@content,$hashref);
	}
}	}
return;	return;
}	}
Line 13300 sub get_dns {	Line 15796 sub get_dns {
sub parse_dns_checksums_tab {	sub parse_dns_checksums_tab {
my ($lines,$hashref) = @_;	my ($lines,$hashref) = @_;
my $lonhost = $perlvar{'lonHostID'};	my $lonhost = $perlvar{'lonHostID'};
my $machine_dom = &Apache::lonnet::host_domain($lonhost);	my $machine_dom = &host_domain($lonhost);
my $loncaparev = &get_server_loncaparev($machine_dom);	my $loncaparev = &get_server_loncaparev($machine_dom);
my $distro = (split(/\:/,&get_server_distarch($lonhost)))[0];	my $distro = (split(/\:/,&get_server_distarch($lonhost)))[0];
my $webconfdir = '/etc/httpd/conf';	my $webconfdir = '/etc/httpd/conf';
Line 13320 sub parse_dns_checksums_tab {	Line 15816 sub parse_dns_checksums_tab {
if (ref($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 ($file =~ m{^/etc/httpd/conf}) {	if ($file =~ m{^/etc/httpd/conf}) {
Line 13344 sub parse_dns_checksums_tab {	Line 15840 sub parse_dns_checksums_tab {

sub fetch_dns_checksums {	sub fetch_dns_checksums {
my %checksums;	my %checksums;
my $machine_dom = &Apache::lonnet::host_domain($perlvar{'lonHostID'});	my $machine_dom = &host_domain($perlvar{'lonHostID'});
my $loncaparev = &get_server_loncaparev($machine_dom,$perlvar{'lonHostID'});	my $loncaparev = &get_server_loncaparev($machine_dom,$perlvar{'lonHostID'});
my ($release,$timestamp) = split(/\-/,$loncaparev);	my ($release,$timestamp) = split(/\-/,$loncaparev);
&get_dns("/adm/dns/checksums/$release",\&parse_dns_checksums_tab,1,1,	&get_dns("/adm/dns/checksums/$release",\&parse_dns_checksums_tab,1,1,
Line 13352 sub fetch_dns_checksums {	Line 15848 sub fetch_dns_checksums {
return \%checksums;	return \%checksums;
}	}

	sub fetch_crl_pemfile {
	return &get_dns("/adm/dns/loncapaCRL",\&save_crl_pem,1,1);
	}

	sub save_crl_pem {
	my ($content) = @_;
	my ($msg,$hadchanges);
	if ($content ne '') {
	my $now = time;
	my $lonca = $perlvar{'lonCertificateDirectory'}.'/'.$perlvar{'lonnetCertificateAuthority'};
	my $tmpcrl = $tmpdir.'/'.$perlvar{'lonnetCertRevocationList'}.'_'.$now.'.'.$$.'.tmp';
	if (open(my $fh,'>',"$tmpcrl")) {
	print $fh $content;
	close($fh);
	if (-e $lonca) {
	if (open(PIPE,"openssl crl -in $tmpcrl -inform pem -CAfile $lonca -noout 2>&1 \|")) {
	my $check = <PIPE>;
	close(PIPE);
	chomp($check);
	if ($check eq 'verify OK') {
	my $dest = "$perlvar{'lonCertificateDirectory'}/$perlvar{'lonnetCertRevocationList'}";
	my $backup;
	if (-e $dest) {
	if (&File::Copy::move($dest,"$dest.bak")) {
	$backup = 'ok';
	}
	}
	if (&File::Copy::move($tmpcrl,$dest)) {
	$msg = 'ok';
	if ($backup) {
	my (%oldnums,%newnums);
	if (open(PIPE, "openssl crl -inform PEM -text -noout -in $dest.bak \|grep 'Serial Number' \|")) {
	while (<PIPE>) {
	$oldnums{(split(/:/))[1]} = 1;
	}
	close(PIPE);
	}
	if (open(PIPE, "openssl crl -inform PEM -text -noout -in $dest \|grep 'Serial Number' \|")) {
	while(<PIPE>) {
	$newnums{(split(/:/))[1]} = 1;
	}
	close(PIPE);
	}
	foreach my $key (sort {$b <=> $a } (keys(%newnums))) {
	unless (exists($oldnums{$key})) {
	$hadchanges = 1;
	last;
	}
	}
	unless ($hadchanges) {
	foreach my $key (sort {$b <=> $a } (keys(%oldnums))) {
	unless (exists($newnums{$key})) {
	$hadchanges = 1;
	last;
	}
	}
	}
	}
	}
	} else {
	unlink($tmpcrl);
	}
	} else {
	unlink($tmpcrl);
	}
	} else {
	unlink($tmpcrl);
	}
	}
	}
	return ($msg,$hadchanges);
	}

	sub parse_getdns_url {
	my ($command,$url) = @_;
	my $dir = $perlvar{'lonTabDir'};
	my $file;
	if ($command eq 'hosts') {
	$file = 'dns_hosts.tab';
	} elsif ($command eq 'domain') {
	$file = 'dns_domain.tab';
	} elsif ($command eq 'checksums') {
	my $version = (split('/',$url))[4];
	$file = "dns_checksums/$version.tab",
	} elsif ($command eq 'loncapaCRL') {
	$dir = $perlvar{'lonCertificateDirectory'};
	$file = $perlvar{'lonnetCertRevocationList'};
	}
	return ($dir,$file);
	}

# ------------------------------------------------------------ Read domain file	# ------------------------------------------------------------ Read domain file
{	{
my $loaded;	my $loaded;
Line 13474 sub fetch_dns_checksums {	Line 16061 sub fetch_dns_checksums {
&purge_remembered();	&purge_remembered();
&reset_domain_info();	&reset_domain_info();
&reset_hosts_ip_info();	&reset_hosts_ip_info();
	undef(%internetdom);
undef(%name_to_host);	undef(%name_to_host);
undef(%hostname);	undef(%hostname);
undef(%hostdom);	undef(%hostdom);
Line 13516 sub fetch_dns_checksums {	Line 16104 sub fetch_dns_checksums {
return %hostdom;	return %hostdom;
}	}

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

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

Line 13635 sub fetch_dns_checksums {	Line 16228 sub fetch_dns_checksums {
return %iphost;	return %iphost;
}	}
my ($ip_info,$cached)=	my ($ip_info,$cached)=
&Apache::lonnet::is_cached_new('iphost','iphost');	&is_cached_new('iphost','iphost');
if ($cached) {	if ($cached) {
%iphost = %{$ip_info->[0]};	%iphost = %{$ip_info->[0]};
%name_to_ip = %{$ip_info->[1]};	%name_to_ip = %{$ip_info->[1]};
Line 13647 sub fetch_dns_checksums {	Line 16240 sub fetch_dns_checksums {
# get yesterday's info for fallback	# get yesterday's info for fallback
my %old_name_to_ip;	my %old_name_to_ip;
my ($ip_info,$cached)=	my ($ip_info,$cached)=
&Apache::lonnet::is_cached_new('iphost','iphost');	&is_cached_new('iphost','iphost');
if ($cached) {	if ($cached) {
%old_name_to_ip = %{$ip_info->[1]};	%old_name_to_ip = %{$ip_info->[1]};
}	}
Line 13714 sub fetch_dns_checksums {	Line 16307 sub fetch_dns_checksums {
my ($lonid) = @_;	my ($lonid) = @_;
return if ($lonid eq '');	return if ($lonid eq '');
my ($idnref,$cached)=	my ($idnref,$cached)=
&Apache::lonnet::is_cached_new('internetnames',$lonid);	&is_cached_new('internetnames',$lonid);
if ($cached) {	if ($cached) {
return $idnref;	return $idnref;
}	}
Line 13746 sub all_loncaparevs {	Line 16339 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 13762 sub all_loncaparevs {	Line 16355 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 13854 BEGIN {	Line 16447 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 13872 BEGIN {	Line 16465 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 13909 BEGIN {	Line 16510 BEGIN {
$deftex = LONCAPA::texengine();	$deftex = LONCAPA::texengine();
}	}

	# ------------- set default minimum length for passwords for internal auth users
	{
	$passwdmin = LONCAPA::passwd_min();
	}

$memcache=new Cache::Memcached({'servers' => ['127.0.0.1:11211'],	$memcache=new Cache::Memcached({'servers' => ['127.0.0.1:11211'],
'compress_threshold'=> 20_000,	'compress_threshold'=> 20_000,
});	});
Line 14150 the answer, and also caches if there is	Line 16756 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 14162 usernames (returns hash: name=>id,name=>	Line 16770 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 14210 The first argument is required, all othe	Line 16838 The first argument is required, all othe

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

F: full access	F: full access
Line 14226 prevents recursive calls to &allowed.	Line 16854 prevents recursive calls to &allowed.
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.	B: access temporarily blocked because of a blocking event in a course.
	D: access blocked because access is required via session initiated via deep-link

=item *	=item *

Line 14278 provided for types, will default to retu	Line 16907 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 14518 data base, returning a hash that is keye	Line 17147 data base, returning a hash that is keye
values that are the resource value. I believe that the timestamps and	values that are the resource value. I believe that the timestamps and
versions are also returned.	versions are also returned.

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

=back	=back

=head2 Course Modification	=head2 Course Modification
Line 14689 condval($condidx) : value of condition i	Line 17314 condval($condidx) : value of condition i

=item *	=item *

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

	the toolsymb is only used where the uri is for an external tool (for which
	the uri as well as the symb are guaranteed to be unique).

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

=item *	=item *

Line 14704 will be stored for query	Line 17335 will be stored for query

=item *	=item *

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

Args: filename is the filename (including path) for the file for which a symb	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	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	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	(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	a randompick); ignorecachednull, if true will prevent a symb of '' being
returned if $env{$cache_str} is defined as ''; checkforblock if true will	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	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	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	ref to a hash, which, as a side effect, will be populated with all possible
symbs (content blocking not tested).	symbs (content blocking not tested).

returns the data handle	returns the data handle

=item *	=item *
Line 14727 and is a possible symb for the URL in $t	Line 17358 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 14782 expirespread($uname,$udom,$stype,$usymb)	Line 17413 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 14796 when viewing in course context.	Line 17427 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 14818 homeserver.	Line 17449 homeserver.

=item *	=item *

store($storehash,$symb,$namespace,$udom,$uname,$laststore) : stores hash	store($storehash,$symb,$namespace,$udom,$uname,$laststore) : stores hash
permanently for this url; hashref needs to be given and should be a \%hashname;	permanently for this url; hashref needs to be given and should be a \%hashname;
the 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 (with the exception of $laststore, which is an	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).	optional arg used when a user's submission is stored in grading).
$laststore is $version=$timestamp, where $version is the most recent version	$laststore is $version=$timestamp, where $version is the most recent version
number retrieved for the corresponding $symb in the $namespace db file, and	number retrieved for the corresponding $symb in the $namespace db file, and
$timestamp is the timestamp for that transaction (UNIX time).	$timestamp is the timestamp for that transaction (UNIX time).
$laststore is currently only passed when cstore() is called by	$laststore is currently only passed when cstore() is called by
structuretags::finalize_storage().	structuretags::finalize_storage().

=item *	=item *

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

=item *	=item *
Line 14969 server ($udom and $uhome are optional)	Line 17600 server ($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 15003 requestcourses: ability to request cours	Line 17634 requestcourses: ability to request cours
=over	=over

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

=back	=back

Line 15024 for course's uploaded content.	Line 17655 for course's uploaded content.
=over	=over

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

=back	=back

Line 15035 on your servers.	Line 17666 on your servers.

=over	=over

=item	=item
remotesessions, hostedsessions	remotesessions, hostedsessions

=back	=back
Line 15043 remotesessions, hostedsessions	Line 17674 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 15475 Returns:	Line 18106 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 15487 Args: (first three required; six others	Line 18118 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:

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Removed from v.1.1172.2.112
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	Added in v.1.1526