loncom/lonnet/perl/lonnet.pm - diff

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Diff for /loncom/lonnet/perl/lonnet.pm between versions 1.1172.2.93.4.3 and 1.1415

version 1.1172.2.93.4.3, 2017/10/14 21:27:51	version 1.1415, 2019/08/20 03:46:09
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 vars qw(%perlvar %spareid %pr %prp $memcache %packagetab $tmpdir	use Encode;

	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);

Line 98 use LONCAPA qw(:DEFAULT :match);	Line 100 use LONCAPA qw(:DEFAULT :match);
use LONCAPA::Configuration;	use LONCAPA::Configuration;
use LONCAPA::lonmetadata;	use LONCAPA::lonmetadata;
use LONCAPA::Lond;	use LONCAPA::Lond;
	use LONCAPA::LWPReq;
	use LONCAPA::transliterate;

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

Line 109 require Exporter;	Line 113 require Exporter;
our @ISA = qw (Exporter);	our @ISA = qw (Exporter);
our @EXPORT = qw(%env);	our @EXPORT = qw(%env);


# ------------------------------------ Logging (parameters, docs, slots, roles)	# ------------------------------------ Logging (parameters, docs, slots, roles)
{	{
my $logid;	my $logid;
Line 123 our @EXPORT = qw(%env);	Line 128 our @EXPORT = qw(%env);
$logid ++;	$logid ++;
my $now = time();	my $now = time();
my $id=$now.'00000'.$$.'00000'.$logid;	my $id=$now.'00000'.$$.'00000'.$logid;
my $logentry = {	my $logentry = {
$id => {	$id => {
'exe_uname' => $env{'user.name'},	'exe_uname' => $env{'user.name'},
'exe_udom' => $env{'user.domain'},	'exe_udom' => $env{'user.domain'},
'exe_time' => $now,	'exe_time' => $now,
'exe_ip' => $ENV{'REMOTE_ADDR'},	'exe_ip' => $ENV{'REMOTE_ADDR'},
'delflag' => $delflag,	'delflag' => $delflag,
'logentry' => $storehash,	'logentry' => $storehash,
'uname' => $uname,	'uname' => $uname,
'udom' => $udom,	'udom' => $udom,
}	}
};	};
return &put('nohist_'.$hash_name,$logentry,$cdom,$cnum);	return &put('nohist_'.$hash_name,$logentry,$cdom,$cnum);
}	}
}	}

sub logtouch {	sub logtouch {
my $execdir=$perlvar{'lonDaemons'};	my $execdir=$perlvar{'lonDaemons'};
unless (-e "$execdir/logs/lonnet.log") {	unless (-e "$execdir/logs/lonnet.log") {
open(my $fh,">>$execdir/logs/lonnet.log");	open(my $fh,">>","$execdir/logs/lonnet.log");
close $fh;	close $fh;
}	}
my ($wwwuid,$wwwgid)=(getpwnam('www'))[2,3];	my ($wwwuid,$wwwgid)=(getpwnam('www'))[2,3];
Line 154 sub logthis {	Line 159 sub logthis {
my $execdir=$perlvar{'lonDaemons'};	my $execdir=$perlvar{'lonDaemons'};
my $now=time;	my $now=time;
my $local=localtime($now);	my $local=localtime($now);
if (open(my $fh,">>$execdir/logs/lonnet.log")) {	if (open(my $fh,">>","$execdir/logs/lonnet.log")) {
my $logstring = $local. " ($$): ".$message."\n"; # Keep any \'s in string.	my $logstring = $local. " ($$): ".$message."\n"; # Keep any \'s in string.
print $fh $logstring;	print $fh $logstring;
close($fh);	close($fh);
Line 167 sub logperm {	Line 172 sub logperm {
my $execdir=$perlvar{'lonDaemons'};	my $execdir=$perlvar{'lonDaemons'};
my $now=time;	my $now=time;
my $local=localtime($now);	my $local=localtime($now);
if (open(my $fh,">>$execdir/logs/lonnet.perm.log")) {	if (open(my $fh,">>","$execdir/logs/lonnet.perm.log")) {
print $fh "$now:$message:$local\n";	print $fh "$now:$message:$local\n";
close($fh);	close($fh);
}	}
Line 180 sub create_connection {	Line 185 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 225 sub get_server_distarch {	Line 230 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 259 sub get_server_loncaparev {	Line 312 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 356 sub remote_devalidate_cache {	Line 408 sub remote_devalidate_cache {
my $items;	my $items;
return unless (ref($cachekeys) eq 'ARRAY');	return unless (ref($cachekeys) eq 'ARRAY');
my $cachestr = join('&',@{$cachekeys});	my $cachestr = join('&',@{$cachekeys});
return &reply('devalidatecache:'.&escape($cachestr),$lonhost);	my $response = &reply('devalidatecache:'.&escape($cachestr),$lonhost);
	return $response;
}	}

# -------------------------------------------------- Non-critical communication	# -------------------------------------------------- Non-critical communication
Line 388 sub subreply {	Line 441 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 ($client) {
Line 407 sub reply {	Line 460 sub reply {
unless (defined(&hostname($server))) { return 'no_such_host'; }	unless (defined(&hostname($server))) { return 'no_such_host'; }
my $answer=subreply($cmd,$server);	my $answer=subreply($cmd,$server);
if (($answer=~/^refused/) \|\| ($answer=~/^rejected/)) {	if (($answer=~/^refused/) \|\| ($answer=~/^rejected/)) {
&logthis("<font color=\"blue\">WARNING:".	my $logged = $cmd;
" $cmd to $server returned $answer</font>");	if ($cmd =~ /^encrypt:([^:]+):/) {
	my $subcmd = $1;
	if (($subcmd eq 'auth') \|\| ($subcmd eq 'passwd') \|\|
	($subcmd eq 'changeuserauth') \|\| ($subcmd eq 'makeuser') \|\|
	($subcmd eq 'putdom') \|\| ($subcmd eq 'autoexportgrades')) {
	(undef,undef,my @rest) = split(/:/,$cmd);
	if (($subcmd eq 'auth') \|\| ($subcmd eq 'putdom')) {
	splice(@rest,2,1,'Hidden');
	} elsif ($subcmd eq 'passwd') {
	splice(@rest,2,2,('Hidden','Hidden'));
	} elsif (($subcmd eq 'changeuserauth') \|\| ($subcmd eq 'makeuser') \|\|
	($subcmd eq 'autoexportgrades')) {
	splice(@rest,3,1,'Hidden');
	}
	$logged = join(':',('encrypt:'.$subcmd,@rest));
	}
	}
	&logthis("<font color=\"blue\">WARNING:".
	" $logged to $server returned $answer</font>");
}	}
return $answer;	return $answer;
}	}
Line 436 sub reconlonc {	Line 507 sub reconlonc {

&logthis("Trying to reconnect lonc");	&logthis("Trying to reconnect lonc");
my $loncfile="$perlvar{'lonDaemons'}/logs/lonc.pid";	my $loncfile="$perlvar{'lonDaemons'}/logs/lonc.pid";
if (open(my $fh,"<$loncfile")) {	if (open(my $fh,"<",$loncfile)) {
my $loncpid=<$fh>;	my $loncpid=<$fh>;
chomp($loncpid);	chomp($loncpid);
if (kill 0 => $loncpid) {	if (kill 0 => $loncpid) {
&logthis("lonc at pid $loncpid responding, sending USR1");	&logthis("lonc at pid $loncpid responding, sending USR1");
kill USR1 => $loncpid;	kill USR1 => $loncpid;
sleep 1;	sleep 1;
} else {	} else {
&logthis(	&logthis(
"<font color=\"blue\">WARNING:".	"<font color=\"blue\">WARNING:".
" lonc at pid $loncpid not responding, giving up</font>");	" lonc at pid $loncpid not responding, giving up</font>");
Line 476 sub critical {	Line 547 sub critical {
$dumpcount++;	$dumpcount++;
{	{
my $dfh;	my $dfh;
if (open($dfh,">$dfilename")) {	if (open($dfh,">",$dfilename)) {
print $dfh "$cmd\n";	print $dfh "$cmd\n";
close($dfh);	close($dfh);
}	}
Line 485 sub critical {	Line 556 sub critical {
my $wcmd='';	my $wcmd='';
{	{
my $dfh;	my $dfh;
if (open($dfh,"<$dfilename")) {	if (open($dfh,"<",$dfilename)) {
$wcmd=<$dfh>;	$wcmd=<$dfh>;
close($dfh);	close($dfh);
}	}
Line 603 sub transfer_profile_to_env {	Line 674 sub transfer_profile_to_env {
sub check_for_valid_session {	sub check_for_valid_session {
my ($r,$name,$userhashref,$domref) = @_;	my ($r,$name,$userhashref,$domref) = @_;
my %cookies=CGI::Cookie->parse($r->header_in('Cookie'));	my %cookies=CGI::Cookie->parse($r->header_in('Cookie'));
if ($name eq '') {	my ($lonidsdir,$linkname,$pubname,$secure,$lonid);
$name = 'lonID';
}
my $lonid=$cookies{$name};
return undef if (!$lonid);

my $handle=&LONCAPA::clean_handle($lonid->value);
my $lonidsdir;
if ($name eq 'lonDAV') {	if ($name eq 'lonDAV') {
$lonidsdir=$r->dir_config('lonDAVsessDir');	$lonidsdir=$r->dir_config('lonDAVsessDir');
} else {	} else {
$lonidsdir=$r->dir_config('lonIDsDir');	$lonidsdir=$r->dir_config('lonIDsDir');
	if ($name eq '') {
	$name = 'lonID';
	}
	}
	if ($name eq 'lonID') {
	$secure = 'lonSID';
	$linkname = 'lonLinkID';
	$pubname = 'lonPubID';
	if (exists($cookies{$secure})) {
	$lonid=$cookies{$secure};
	} elsif (exists($cookies{$name})) {
	$lonid=$cookies{$name};
	} elsif ((exists($cookies{$linkname})) && ($ENV{'SERVER_PORT'} != 443)) {
	$lonid=$cookies{$linkname};
	} elsif (exists($cookies{$pubname})) {
	$lonid=$cookies{$pubname};
	}
	} else {
	$lonid=$cookies{$name};
	}
	return undef if (!$lonid);

	my $handle=&LONCAPA::clean_handle($lonid->value);
	if (-l "$lonidsdir/$handle.id") {
	my $link = readlink("$lonidsdir/$handle.id");
	if ((-e $link) && ($link =~ m{^\Q$lonidsdir\E/(.+)\.id$})) {
	$handle = $1;
	}
}	}
if (!-e "$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 639 sub check_for_valid_session {	Line 731 sub check_for_valid_session {

if (!defined($disk_env{'user.name'})	if (!defined($disk_env{'user.name'})
\|\| !defined($disk_env{'user.domain'})) {	\|\| !defined($disk_env{'user.domain'})) {
	untie(%disk_env);
return undef;	return undef;
}	}

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'};
	$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);

return $handle;	return $handle;
}	}
Line 670 sub timed_flock {	Line 769 sub timed_flock {
}	}
}	}

	sub get_sessionfile_vars {
	my ($handle,$lonidsdir,$storearr) = @_;
	my %returnhash;
	unless (ref($storearr) eq 'ARRAY') {
	return %returnhash;
	}
	if (-l "$lonidsdir/$handle.id") {
	my $link = readlink("$lonidsdir/$handle.id");
	if ((-e $link) && ($link =~ m{^\Q$lonidsdir\E/(.+)\.id$})) {
	$handle = $1;
	}
	}
	if ((-e "$lonidsdir/$handle.id") &&
	($handle =~ /^($match_username)\_\d+\_($match_domain)\_(.+)$/)) {
	my ($possuname,$possudom,$possuhome) = ($1,$2,$3);
	if ((&domain($possudom) ne '') && (&homeserver($possuname,$possudom) eq $possuhome)) {
	if (open(my $idf,'+<',"$lonidsdir/$handle.id")) {
	flock($idf,LOCK_SH);
	if (tie(my %disk_env,'GDBM_File',"$lonidsdir/$handle.id",
	&GDBM_READER(),0640)) {
	foreach my $item (@{$storearr}) {
	$returnhash{$item} = $disk_env{$item};
	}
	untie(%disk_env);
	}
	}
	}
	}
	return %returnhash;
	}

# ---------------------------------------------------------- Append Environment	# ---------------------------------------------------------- Append Environment

sub appenv {	sub appenv {
Line 695 sub appenv {	Line 825 sub appenv {
$env{$key}=$newenv->{$key};	$env{$key}=$newenv->{$key};
}	}
}	}
my $opened = open(my $env_file,'+<',$env{'user.environment'});	my $lonids = $perlvar{'lonIDsDir'};
if ($opened	if ($env{'user.environment'} =~ m{^\Q$lonids/\E$match_username\_\d+\_$match_domain\_[\w\-.]+\.id$}) {
&& &timed_flock($env_file,LOCK_EX)	my $opened = open(my $env_file,'+<',$env{'user.environment'});
&&	if ($opened
tie(my %disk_env,'GDBM_File',$env{'user.environment'},	&& &timed_flock($env_file,LOCK_EX)
(&GDBM_WRITER()\|&GDBM_NOLOCK()),0640)) {	&&
while (my ($key,$value) = each(%{$newenv})) {	tie(my %disk_env,'GDBM_File',$env{'user.environment'},
$disk_env{$key} = $value;	(&GDBM_WRITER()\|&GDBM_NOLOCK()),0640)) {
}	while (my ($key,$value) = each(%{$newenv})) {
untie(%disk_env);	$disk_env{$key} = $value;
	}
	untie(%disk_env);
	}
}	}
}	}
return 'ok';	return 'ok';
Line 820 sub userload {	Line 953 sub userload {
while ($filename=readdir(LONIDS)) {	while ($filename=readdir(LONIDS)) {
next if ($filename eq '.' \|\| $filename eq '..');	next if ($filename eq '.' \|\| $filename eq '..');
next if ($filename =~ /publicuser_\d+\.id/);	next if ($filename =~ /publicuser_\d+\.id/);
	next if ($filename =~ /^[a-f0-9]+_linked\.id$/);
my ($mtime)=(stat($perlvar{'lonIDsDir'}.'/'.$filename))[9];	my ($mtime)=(stat($perlvar{'lonIDsDir'}.'/'.$filename))[9];
if ($curtime-$mtime < 1800) { $numusers++; }	if ($curtime-$mtime < 1800) { $numusers++; }
}	}
Line 875 sub spareserver {	Line 1009 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};
	}
$spare_server = $protocol.'://'.$hostname;	$spare_server = $protocol.'://'.$hostname;
}	}
}	}
Line 948 sub find_existing_session {	Line 1082 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
	# and is not overloaded.
	sub check_for_balancer_cookie {
	my ($r,$update_mtime) = @_;
	my ($otherserver,$cookie);
	my %cookies=CGI::Cookie->parse($r->header_in('Cookie'));
	if (exists($cookies{'balanceID'})) {
	my $balid = $cookies{'balanceID'};
	$cookie=&LONCAPA::clean_handle($balid->value);
	my $balancedir=$r->dir_config('lonBalanceDir');
	if ((-d $balancedir) && (-e "$balancedir/$cookie.id")) {
	if ($cookie =~ /^($match_domain)_($match_username)_[a-f0-9]+$/) {
	my ($possudom,$possuname) = ($1,$2);
	my $has_session = 0;
	if ((&domain($possudom) ne '') &&
	(&homeserver($possuname,$possudom) ne 'no_host')) {
	my $try_server;
	my $opened = open(my $idf,'+<',"$balancedir/$cookie.id");
	if ($opened) {
	flock($idf,LOCK_SH);
	while (my $line = <$idf>) {
	chomp($line);
	if (&hostname($line) ne '') {
	$try_server = $line;
	last;
	}
	}
	close($idf);
	if (($try_server) &&
	(&has_user_session($try_server,$possudom,$possuname))) {
	my $lowest_load = 30000;
	($otherserver,$lowest_load) =
	&compare_server_load($try_server,undef,$lowest_load);
	if ($otherserver ne '' && $lowest_load < 100) {
	$has_session = 1;
	} else {
	undef($otherserver);
	}
	}
	}
	}
	if ($has_session) {
	if ($update_mtime) {
	my $atime = my $mtime = time;
	utime($atime,$mtime,"$balancedir/$cookie.id");
	}
	} else {
	unlink("$balancedir/$cookie.id");
	}
	}
	}
	}
	return ($otherserver,$cookie);
	}

	sub delbalcookie {
	my ($cookie,$balancer) =@_;
	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 $intdom)) {
	return &reply("delbalcookie:$cookie",$balancer);
	}
	}
	}

# -------------------------------- ask if server already has a session for user	# -------------------------------- ask if server already has a session for user
sub has_user_session {	sub has_user_session {
my ($lonid,$udom,$uname) = @_;	my ($lonid,$udom,$uname) = @_;
Line 979 sub choose_server {	Line 1195 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 ($loginvia) {
Line 1049 sub changepass {	Line 1265 sub changepass {
} elsif ($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 $answer;
}	}
Line 1285 sub get_lonbalancer_config {	Line 1504 sub get_lonbalancer_config {
sub check_loadbalancing {	sub check_loadbalancing {
my ($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);	$rule_in_effect,$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 $uprimary_id = &Apache::lonnet::domain($udom,'primary');
my $uintdom = &Apache::lonnet::internet_dom($uprimary_id);	my $uintdom = &Apache::lonnet::internet_dom($uprimary_id);
my $intdom = &Apache::lonnet::internet_dom($lonhost);	my $intdom = &Apache::lonnet::internet_dom($lonhost);
my $serverhomedom = &host_domain($lonhost);	my $serverhomedom = &host_domain($lonhost);
my $domneedscache;	my $domneedscache;
my $cachetime = 606024;	my $cachetime = 606024;

if (($uintdom ne '') && ($uintdom eq $intdom)) {	if (($uintdom ne '') && ($uintdom eq $intdom)) {
Line 1312 sub check_loadbalancing {	Line 1531 sub check_loadbalancing {
}	}
}	}
if (ref($result) eq 'HASH') {	if (ref($result) eq 'HASH') {
($is_balancer,$currtargets,$currrules) =	($is_balancer,$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($currrules) eq 'HASH') {
Line 1373 sub check_loadbalancing {	Line 1592 sub check_loadbalancing {
}	}
}	}
if (ref($result) eq 'HASH') {	if (ref($result) eq 'HASH') {
($is_balancer,$currtargets,$currrules) =	($is_balancer,$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 1439 sub check_loadbalancing {	Line 1658 sub check_loadbalancing {
$is_balancer = 0;	$is_balancer = 0;
if ($uname ne '' && $udom ne '') {	if ($uname ne '' && $udom ne '') {
if (($env{'user.name'} eq $uname) && ($env{'user.domain'} eq $udom)) {	if (($env{'user.name'} eq $uname) && ($env{'user.domain'} eq $udom)) {

&appenv({'user.loadbalexempt' => $lonhost,	&appenv({'user.loadbalexempt' => $lonhost,
'user.loadbalcheck.time' => time});	'user.loadbalcheck.time' => time});
}	}
}	}
}	}
}	}
	unless ($homeintdom) {
	undef($setcookie);
	}
}	}
return ($is_balancer,$otherserver);	return ($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,$currrules);	my ($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 1461 sub check_balancer_result {	Line 1682 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'};
last;	$currtargets = $result->{$key}{'targets'};
	$setcookie = $result->{$key}{'cookie'};
	last;
	}
}	}
	$dom_balancers = join(',',sort(keys(%{$result})));
}	}
}	}
}	}
return ($is_balancer,$currtargets,$currrules);	return ($is_balancer,$currtargets,$currrules,$setcookie,$dom_balancers);
}	}

sub get_loadbalancer_targets {	sub get_loadbalancer_targets {
Line 1545 sub internet_dom_servers {	Line 1771 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 $intcalldom = &Apache::lonnet::internet_dom($callprimary);
	if ($intcalldom eq '') {
	return ($trusted,$untrusted);
	}

	my ($trustconfig,$cached)=&Apache::lonnet::is_cached_new('trust',$calldom);
	unless (defined($cached)) {
	my %domconfig = &Apache::lonnet::get_dom('configuration',['trust'],$calldom);
	&Apache::lonnet::do_cache_new('trust',$calldom,$domconfig{'trust'},3600);
	$trustconfig = $domconfig{'trust'};
	}
	if (ref($trustconfig)) {
	my (%possexc,%possinc,@allexc,@allinc);
	if (ref($trustconfig->{$cmdtype}) eq 'HASH') {
	if (ref($trustconfig->{$cmdtype}->{'exc'}) eq 'ARRAY') {
	map { $possexc{$_} = 1; } @{$trustconfig->{$cmdtype}->{'exc'}};
	}
	if (ref($trustconfig->{$cmdtype}->{'inc'}) eq 'ARRAY') {
	$possinc{$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 1570 sub homeserver {	Line 1891 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(/\&/,$reply);
Line 1589 sub idget {	Line 1926 sub idget {
for ($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 1606 sub idrget {	Line 1943 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 1841 sub inst_directory_query {	Line 2259 sub inst_directory_query {
my $homeserver = &domain($udom,'primary');	my $homeserver = &domain($udom,'primary');
my $outcome;	my $outcome;
if ($homeserver ne '') {	if ($homeserver ne '') {
	unless ($homeserver eq $perlvar{'lonHostID'}) {
	if ($srch->{'srchby'} eq 'email') {
	my $lcrev = &get_server_loncaparev(undef,$homeserver);
	my ($major,$minor) = ($lcrev =~ /^\'?(\d+)\.(\d+)\.[\w.\-]+\'?$/);
	if (($major eq '' && $minor eq '') \|\| ($major < 2) \|\|
	(($major == 2) && ($minor < 12))) {
	return;
	}
	}
	}
my $queryid=&reply("querysend:instdirsearch:".	my $queryid=&reply("querysend:instdirsearch:".
&escape($srch->{'srchby'}).':'.	&escape($srch->{'srchby'}).':'.
&escape($srch->{'srchterm'}).':'.	&escape($srch->{'srchterm'}).':'.
Line 1882 sub usersearch {	Line 2310 sub usersearch {
my $query = 'usersearch';	my $query = 'usersearch';
foreach my $tryserver (keys(%libserv)) {	foreach my $tryserver (keys(%libserv)) {
if (&host_domain($tryserver) eq $dom) {	if (&host_domain($tryserver) eq $dom) {
	unless ($tryserver eq $perlvar{'lonHostID'}) {
	if ($srch->{'srchby'} eq 'email') {
	my $lcrev = &get_server_loncaparev(undef,$tryserver);
	my ($major,$minor) = ($lcrev =~ /^\'?(\d+)\.(\d+)\.[\w.\-]+\'?$/);
	next if (($major eq '' && $minor eq '') \|\| ($major < 2) \|\|
	(($major == 2) && ($minor < 12)));
	}
	}
my $host=&hostname($tryserver);	my $host=&hostname($tryserver);
my $queryid=	my $queryid=
&reply("querysend:".&escape($query).':'.	&reply("querysend:".&escape($query).':'.
Line 1971 sub get_multiple_instusers {	Line 2407 sub get_multiple_instusers {
my ($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 2015 sub get_multiple_instusers {	Line 2451 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 2120 sub get_domain_defaults {	Line 2556 sub get_domain_defaults {
'requestcourses','inststatus',	'requestcourses','inststatus',
'coursedefaults','usersessions',	'coursedefaults','usersessions',
'requestauthor','selfenrollment',	'requestauthor','selfenrollment',
'coursecategories','autoenroll',	'coursecategories','ssl','autoenroll',
'helpsettings'],$domain);	'trust','helpsettings'],$domain);
my @coursetypes = ('official','unofficial','community','textbook');	my @coursetypes = ('official','unofficial','community','textbook','placement');
if (ref($domconfig{'defaults'}) eq 'HASH') {	if (ref($domconfig{'defaults'}) eq 'HASH') {
$domdefaults{'lang_def'} = $domconfig{'defaults'}{'lang_def'};	$domdefaults{'lang_def'} = $domconfig{'defaults'}{'lang_def'};
$domdefaults{'auth_def'} = $domconfig{'defaults'}{'auth_def'};	$domdefaults{'auth_def'} = $domconfig{'defaults'}{'auth_def'};
Line 2155 sub get_domain_defaults {	Line 2591 sub get_domain_defaults {
}	}
}	}
if (ref($domconfig{'requestcourses'}) eq 'HASH') {	if (ref($domconfig{'requestcourses'}) eq 'HASH') {
foreach my $item ('official','unofficial','community','textbook') {	foreach my $item ('official','unofficial','community','textbook','placement') {
$domdefaults{$item} = $domconfig{'requestcourses'}{$item};	$domdefaults{$item} = $domconfig{'requestcourses'}{$item};
}	}
}	}
Line 2168 sub get_domain_defaults {	Line 2604 sub get_domain_defaults {
}	}
}	}
if (ref($domconfig{'coursedefaults'}) eq 'HASH') {	if (ref($domconfig{'coursedefaults'}) eq 'HASH') {
	$domdefaults{'canuse_pdfforms'} = $domconfig{'coursedefaults'}{'canuse_pdfforms'};
$domdefaults{'usejsme'} = $domconfig{'coursedefaults'}{'usejsme'};	$domdefaults{'usejsme'} = $domconfig{'coursedefaults'}{'usejsme'};
$domdefaults{'uselcmath'} = $domconfig{'coursedefaults'}{'uselcmath'};	$domdefaults{'uselcmath'} = $domconfig{'coursedefaults'}{'uselcmath'};
if (ref($domconfig{'coursedefaults'}{'postsubmit'}) eq 'HASH') {	if (ref($domconfig{'coursedefaults'}{'postsubmit'}) eq 'HASH') {
Line 2184 sub get_domain_defaults {	Line 2621 sub get_domain_defaults {
}	}
if ($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};
}	}
}	}
}	}
Line 2199 sub get_domain_defaults {	Line 2636 sub get_domain_defaults {
} elsif ($domconfig{'coursedefaults'}{'canclone'}) {	} elsif ($domconfig{'coursedefaults'}{'canclone'}) {
$domdefaults{'canclone'}=$domconfig{'coursedefaults'}{'canclone'};	$domdefaults{'canclone'}=$domconfig{'coursedefaults'}{'canclone'};
}	}
	if ($domconfig{'coursedefaults'}{'texengine'}) {
	$domdefaults{'texengine'} = $domconfig{'coursedefaults'}{'texengine'};
	}
}	}
if (ref($domconfig{'usersessions'}) eq 'HASH') {	if (ref($domconfig{'usersessions'}) eq 'HASH') {
if (ref($domconfig{'usersessions'}{'remote'}) eq 'HASH') {	if (ref($domconfig{'usersessions'}{'remote'}) eq 'HASH') {
Line 2249 sub get_domain_defaults {	Line 2689 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'};
}	}
Line 2262 sub get_domain_defaults {	Line 2721 sub get_domain_defaults {
return %domdefaults;	return %domdefaults;
}	}

	sub get_dom_cats {
	my ($dom) = @_;
	return unless (&domain($dom));
	my ($cats,$cached)=&is_cached_new('cats',$dom);
	unless (defined($cached)) {
	my %domconfig = &get_dom('configuration',['coursecategories'],$dom);
	if (ref($domconfig{'coursecategories'}) eq 'HASH') {
	if (ref($domconfig{'coursecategories'}{'cats'}) eq 'HASH') {
	%{$cats} = %{$domconfig{'coursecategories'}{'cats'}};
	} else {
	$cats = {};
	}
	} else {
	$cats = {};
	}
	&Apache::lonnet::do_cache_new('cats',$dom,$cats,3600);
	}
	return $cats;
	}

	sub get_dom_instcats {
	my ($dom) = @_;
	return unless (&domain($dom));
	my ($instcats,$cached)=&is_cached_new('instcats',$dom);
	unless (defined($cached)) {
	my (%coursecodes,%codes,@codetitles,%cat_titles,%cat_order);
	my $totcodes = &retrieve_instcodes(\%coursecodes,$dom);
	if ($totcodes > 0) {
	my $caller = 'global';
	if (&auto_instcode_format($caller,$dom,\%coursecodes,\%codes,
	\@codetitles,\%cat_titles,\%cat_order) eq 'ok') {
	$instcats = {
	codes => \%codes,
	codetitles => \@codetitles,
	cat_titles => \%cat_titles,
	cat_order => \%cat_order,
	};
	&do_cache_new('instcats',$dom,$instcats,3600);
	}
	}
	}
	return $instcats;
	}

	sub retrieve_instcodes {
	my ($coursecodes,$dom) = @_;
	my $totcodes;
	my %courses = &courseiddump($dom,'.',1,'.','.','.',undef,undef,'Course');
	foreach my $course (keys(%courses)) {
	if (ref($courses{$course}) eq 'HASH') {
	if ($courses{$course}{'inst_code'} ne '') {
	$$coursecodes{$course} = $courses{$course}{'inst_code'};
	$totcodes ++;
	}
	}
	}
	return $totcodes;
	}

sub course_portal_url {	sub course_portal_url {
my ($cnum,$cdom) = @_;	my ($cnum,$cdom) = @_;
my $chome = &homeserver($cnum,$cdom);	my $chome = &homeserver($cnum,$cdom);
Line 2278 sub course_portal_url {	Line 2796 sub course_portal_url {
return $firsturl;	return $firsturl;
}	}

	# --------------------------------------------- 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 2523 sub devalidate_cache_new {	Line 3064 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 2787 sub repcopy {	Line 3326 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 2799 sub repcopy {	Line 3342 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 2862 sub absolute_url {	Line 3410 sub absolute_url {
sub ssi {	sub ssi {

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

$form{'no_update_last_known'}=1;	$form{'no_update_last_known'}=1;
&Apache::lonenc::check_encrypt(\$fn);	&Apache::lonenc::check_encrypt(\$fn);
if (%form) {	if (%form) {
$request=new HTTP::Request('POST',&absolute_url().$fn);	$request=new HTTP::Request('POST',&absolute_url().$fn);
$request->content(join('&',map {	$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);	$request=new HTTP::Request('GET',&absolute_url().$fn);
}	}

$request->header(Cookie => $ENV{'HTTP_COOKIE'});	$request->header(Cookie => $ENV{'HTTP_COOKIE'});
my $response= $ua->request($request);	my $lonhost = $perlvar{'lonHostID'};
	my $islocal;
	if (($env{'request.course.id'}) &&
	($form{'grade_courseid'} eq $env{'request.course.id'}) &&
	($form{'grade_username'} ne '') && ($form{'grade_domain'} ne '') &&
	($form{'grade_symb'} ne '') &&
	(&Apache::lonnet::allowed('mgr',$env{'request.course.id'}.
	($env{'request.course.sec'}?'/'.$env{'request.course.sec'}:'')))) {
	$islocal = 1;
	}
	my $response= &LONCAPA::LWPReq::makerequest($lonhost,$request,'',\%perlvar,
	'','','',$islocal);

if (wantarray) {	if (wantarray) {
return ($response->content, $response);	return ($response->content, $response);
} else {	} else {
Line 2890 sub ssi {	Line 3449 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 2900 sub externalssi {	Line 3458 sub externalssi {
}	}
}	}


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

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

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

sub allowuploaded {	sub allowuploaded {
Line 2916 sub allowuploaded {	Line 3539 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 2924 sub allowuploaded {	Line 3547 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 3018 sub can_edit_resource {	Line 3641 sub can_edit_resource {
$forceedit = 1;	$forceedit = 1;
}	}
$cfile = $resurl;	$cfile = $resurl;
} elsif (($resurl ne '') && (&is_on_map($resurl))) {	} elsif (($resurl ne '') && (&is_on_map($resurl))) {
if ($resurl =~ m{^/adm/$match_domain/$match_username/\d+/smppg\|bulletinboard$}) {	if ($resurl =~ m{^/adm/$match_domain/$match_username/\d+/smppg\|bulletinboard$}) {
$incourse = 1;	$incourse = 1;
if ($env{'form.forceedit'}) {	if ($env{'form.forceedit'}) {
Line 3057 sub can_edit_resource {	Line 3680 sub can_edit_resource {
}	}
} elsif ($resurl eq '/res/lib/templates/simpleproblem.problem/smpedit') {	} elsif ($resurl eq '/res/lib/templates/simpleproblem.problem/smpedit') {
my $template = '/res/lib/templates/simpleproblem.problem';	my $template = '/res/lib/templates/simpleproblem.problem';
if (&is_on_map($template)) {	if (&is_on_map($template)) {
$incourse = 1;	$incourse = 1;
$forceview = 1;	$forceview = 1;
$cfile = $template;	$cfile = $template;
Line 3117 sub can_edit_resource {	Line 3740 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$/,@ids)) {
Line 3144 sub in_course {	Line 3767 sub in_course {
if ($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 3249 sub process_coursefile {	Line 3872 sub process_coursefile {
$home);	$home);
}	}
} elsif ($action eq 'uploaddoc') {	} elsif ($action eq 'uploaddoc') {
open(my $fh,'>'.$filepath.'/'.$fname);	open(my $fh,'>',$filepath.'/'.$fname);
print $fh $env{'form.'.$source};	print $fh $env{'form.'.$source};
close($fh);	close($fh);
if ($parser eq 'parse') {	if ($parser eq 'parse') {
Line 3307 sub store_edited_file {	Line 3930 sub store_edited_file {
($fpath,$fname) = ($file =~ m\|^(.*)/([^/]+)$\|);	($fpath,$fname) = ($file =~ m\|^(.*)/([^/]+)$\|);
$fpath=$docudom.'/'.$docuname.'/'.$fpath;	$fpath=$docudom.'/'.$docuname.'/'.$fpath;
my $filepath = &build_filepath($fpath);	my $filepath = &build_filepath($fpath);
open(my $fh,'>'.$filepath.'/'.$fname);	open(my $fh,'>',$filepath.'/'.$fname);
print $fh $content;	print $fh $content;
close($fh);	close($fh);
my $home=&homeserver($docuname,$docudom);	my $home=&homeserver($docuname,$docudom);
Line 3332 sub clean_filename {	Line 3955 sub clean_filename {
}	}
# Replace spaces by underscores	# Replace spaces by underscores
$fname=~s/\s+/\_/g;	$fname=~s/\s+/\_/g;
	# Transliterate non-ascii text to ascii
	my $lang = &Apache::lonlocal::current_language();
	$fname = &LONCAPA::transliterate::fname_to_ascii($fname,$lang);
# Replace all other weird characters by nothing	# Replace all other weird characters by nothing
$fname=~s{[^/\w\.\-]}{}g;	$fname=~s{[^/\w\.\-]}{}g;
# 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
Line 3339 sub clean_filename {	Line 3965 sub clean_filename {
$fname=~s/\.(\d+)(?=\.)/_$1/g;	$fname=~s/\.(\d+)(?=\.)/_$1/g;
return $fname;	return $fname;
}	}

# This Function checks if an Image's dimensions exceed either $resizewidth (width)	# This Function checks if an Image's dimensions exceed either $resizewidth (width)
# or $resizeheight (height) - both pixels. If so, the image is scaled to produce an	# or $resizeheight (height) - both pixels. If so, the image is scaled to produce an
# image with the same aspect ratio as the original, but with dimensions which do	# image with the same aspect ratio as the original, but with dimensions which do
Line 3381 sub resizeImage {	Line 4008 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, or ''.	# canceloverwrite, scantron 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
# $context is passed as argument to &finishuserfileupload	# $context is passed as argument to &finishuserfileupload
# $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)	# $parser - instruction to parse file for objects ($parser = parse) or
	# if context is 'scantron', $parser is hashref of csv column mapping
	# (e.g.,{ PaperID => 0, LastName => 1, FirstName => 2, ID => 3,
	# 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	# $desuname - username for permanent storage of uploaded file
Line 3410 sub userfileupload {	Line 4040 sub userfileupload {
$fname=&clean_filename($fname);	$fname=&clean_filename($fname);
# See if there is anything left	# See if there is anything left
unless ($fname) { return 'error: no uploaded file'; }	unless ($fname) { return 'error: no uploaded file'; }
	# If filename now begins with a . prepend unix timestamp _ milliseconds
	if ($fname =~ /^\./) {
	my ($s,$usec) = &gettimeofday();
	while (length($usec) < 6) {
	$usec = '0'.$usec;
	}
	$fname = $s.'_'.substr($usec,0,3).$fname;
	}
# Files uploaded to help request form, or uploaded to "create course" page are handled differently	# Files uploaded to help request form, or uploaded to "create course" page are handled differently
if ((($formname eq 'screenshot') && ($subdir eq 'helprequests')) \|\|	if ((($formname eq 'screenshot') && ($subdir eq 'helprequests')) \|\|
(($formname eq 'coursecreatorxml') && ($subdir eq 'batchupload')) \|\|	(($formname eq 'coursecreatorxml') && ($subdir eq 'batchupload')) \|\|
Line 3423 sub userfileupload {	Line 4061 sub userfileupload {
'_'.$env{'user.domain'}.'/pending';	'_'.$env{'user.domain'}.'/pending';
} elsif (($context eq 'existingfile') \|\| ($context eq 'canceloverwrite')) {	} elsif (($context eq 'existingfile') \|\| ($context eq 'canceloverwrite')) {
my ($docuname,$docudom);	my ($docuname,$docudom);
if ($destudom) {	if ($destudom =~ /^$match_domain$/) {
$docudom = $destudom;	$docudom = $destudom;
} else {	} else {
$docudom = $env{'user.domain'};	$docudom = $env{'user.domain'};
}	}
if ($destuname) {	if ($destuname =~ /^$match_username$/) {
$docuname = $destuname;	$docuname = $destuname;
} else {	} else {
$docuname = $env{'user.name'};	$docuname = $env{'user.name'};
Line 3458 sub userfileupload {	Line 4096 sub userfileupload {
mkdir($fullpath,0777);	mkdir($fullpath,0777);
}	}
}	}
open(my $fh,'>'.$fullpath.'/'.$fname);	open(my $fh,'>',$fullpath.'/'.$fname);
print $fh $env{'form.'.$formname};	print $fh $env{'form.'.$formname};
close($fh);	close($fh);
if ($context eq 'existingfile') {	if ($context eq 'existingfile') {
Line 3533 sub finishuserfileupload {	Line 4171 sub finishuserfileupload {

# Save the file	# Save the file
{	{
if (!open(FH,'>'.$filepath.'/'.$file)) {	if (!open(FH,'>',$filepath.'/'.$file)) {
&logthis('Failed to create '.$filepath.'/'.$file);	&logthis('Failed to create '.$filepath.'/'.$file);
print STDERR ('Failed to create '.$filepath.'/'.$file."\n");	print STDERR ('Failed to create '.$filepath.'/'.$file."\n");
return '/adm/notfound.html';	return '/adm/notfound.html';
Line 3577 sub finishuserfileupload {	Line 4215 sub finishuserfileupload {
}	}
}	}
}	}
if ($parser eq 'parse') {	if (($context ne 'scantron') && ($parser eq 'parse')) {
if ((ref($mimetype)) && ($$mimetype eq 'text/html')) {	if ((ref($mimetype)) && ($$mimetype eq 'text/html')) {
my $parse_result = &extract_embedded_items($filepath.'/'.$file,	my $parse_result = &extract_embedded_items($filepath.'/'.$file,
$allfiles,$codebase);	$allfiles,$codebase);
Line 3586 sub finishuserfileupload {	Line 4224 sub finishuserfileupload {
' for embedded media: '.$parse_result);	' for embedded media: '.$parse_result);
}	}
}	}
	} elsif (($context eq 'scantron') && (ref($parser) eq 'HASH')) {
	my $format = $env{'form.scantron_format'};
	&bubblesheet_converter($docudom,$filepath.'/'.$file,$parser,$format);
}	}
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 $thumbsize = $thumbwidth.'x'.$thumbheight;	my $thumbsize = $thumbwidth.'x'.$thumbheight;
system("convert -sample $thumbsize $input $output");	my @args = ('convert','-sample',$thumbsize,$input,$output);
	system({$args[0]} @args);
if (-e $filepath.'/'.'tn-'.$file) {	if (-e $filepath.'/'.'tn-'.$file) {
$fetchthumb = 1;	$fetchthumb = 1;
}	}
Line 3650 sub extract_embedded_items {	Line 4292 sub extract_embedded_items {
}	}
if (lc($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 3825 sub embedded_dependency {	Line 4467 sub embedded_dependency {
return;	return;
}	}

	sub bubblesheet_converter {
	my ($cdom,$fullpath,$config,$format) = @_;
	if ((&domain($cdom) ne '') &&
	($fullpath =~ m{^\Q$perlvar{'lonDocRoot'}/userfiles/$cdom/\E$match_courseid/scantron_orig}) &&
	(-e $fullpath) && (ref($config) eq 'HASH') && ($format ne '')) {
	my (%csvcols,%csvoptions);
	if (ref($config->{'fields'}) eq 'HASH') {
	%csvcols = %{$config->{'fields'}};
	}
	if (ref($config->{'options'}) eq 'HASH') {
	%csvoptions = %{$config->{'options'}};
	}
	my %csvbynum = reverse(%csvcols);
	my %scantronconf = &get_scantron_config($format,$cdom);
	if (keys(%scantronconf)) {
	my %bynum = (
	$scantronconf{CODEstart} => 'CODEstart',
	$scantronconf{IDstart} => 'IDstart',
	$scantronconf{PaperID} => 'PaperID',
	$scantronconf{FirstName} => 'FirstName',
	$scantronconf{LastName} => 'LastName',
	$scantronconf{Qstart} => 'Qstart',
	);
	my @ordered;
	foreach my $item (sort { $a <=> $b } keys(%bynum)) {
	push(@ordered,$bynum{$item});
	}
	my %mapstart = (
	CODEstart => 'CODE',
	IDstart => 'ID',
	PaperID => 'PaperID',
	FirstName => 'FirstName',
	LastName => 'LastName',
	Qstart => 'FirstQuestion',
	);
	my %maplength = (
	CODEstart => 'CODElength',
	IDstart => 'IDlength',
	PaperID => 'PaperIDlength',
	FirstName => 'FirstNamelength',
	LastName => 'LastNamelength',
	);
	if (open(my $fh,'<',$fullpath)) {
	my $output;
	my %lettdig = &letter_to_digits();
	my %diglett = reverse(%lettdig);
	my $numletts = scalar(keys(%lettdig));
	my $num = 0;
	while (my $line=<$fh>) {
	$num ++;
	next if (($num == 1) && ($csvoptions{'hdr'} == 1));
	$line =~ s{[\r\n]+$}{};
	my %found;
	my @values = split(/,/,$line);
	my ($qstart,$record);
	for (my $i=0; $i<@values; $i++) {
	if ((($qstart ne '') && ($i > $qstart)) \|\|
	($csvbynum{$i} eq 'FirstQuestion')) {
	if ($values[$i] eq '') {
	$values[$i] = $scantronconf{'Qoff'};
	} elsif ($scantronconf{'Qon'} eq 'number') {
	if ($values[$i] =~ /^[A-Ja-j]$/) {
	$values[$i] = $lettdig{uc($values[$i])};
	}
	} elsif ($scantronconf{'Qon'} eq 'letter') {
	if ($values[$i] =~ /^[0-9]$/) {
	$values[$i] = $diglett{$values[$i]};
	}
	} else {
	if ($values[$i] =~ /^[0-9A-Ja-j]$/) {
	my $digit;
	if ($values[$i] =~ /^[A-Ja-j]$/) {
	$digit = $lettdig{uc($values[$i])}-1;
	if ($values[$i] eq 'J') {
	$digit += $numletts;
	}
	} elsif ($values[$i] =~ /^[0-9]$/) {
	$digit = $values[$i]-1;
	if ($values[$i] eq '0') {
	$digit += $numletts;
	}
	}
	my $qval='';
	for (my $j=0; $j<$scantronconf{'Qlength'}; $j++) {
	if ($j == $digit) {
	$qval .= $scantronconf{'Qon'};
	} else {
	$qval .= $scantronconf{'Qoff'};
	}
	}
	$values[$i] = $qval;
	}
	}
	if (length($values[$i]) > $scantronconf{'Qlength'}) {
	$values[$i] = substr($values[$i],0,$scantronconf{'Qlength'});
	}
	my $numblank = $scantronconf{'Qlength'} - length($values[$i]);
	if ($numblank > 0) {
	$values[$i] .= ($scantronconf{'Qoff'} x $numblank);
	}
	if ($csvbynum{$i} eq 'FirstQuestion') {
	$qstart = $i;
	$found{$csvbynum{$i}} = $values[$i];
	} else {
	$found{'FirstQuestion'} .= $values[$i];
	}
	} elsif (exists($csvbynum{$i})) {
	if ($csvoptions{'rem'}) {
	$values[$i] =~ s/^\s+//;
	}
	if (($csvbynum{$i} eq 'PaperID') && ($csvoptions{'pad'})) {
	while (length($values[$i]) < $scantronconf{$maplength{$csvbynum{$i}}}) {
	$values[$i] = '0'.$values[$i];
	}
	}
	$found{$csvbynum{$i}} = $values[$i];
	}
	}
	foreach my $item (@ordered) {
	my $currlength = 1+length($record);
	my $numspaces = $scantronconf{$item} - $currlength;
	if ($numspaces > 0) {
	$record .= (' ' x $numspaces);
	}
	if (($mapstart{$item} ne '') && (exists($found{$mapstart{$item}}))) {
	unless ($item eq 'Qstart') {
	if (length($found{$mapstart{$item}}) > $scantronconf{$maplength{$item}}) {
	$found{$mapstart{$item}} = substr($found{$mapstart{$item}},0,$scantronconf{$maplength{$item}});
	}
	}
	$record .= $found{$mapstart{$item}};
	}
	}
	$output .= "$record\n";
	}
	close($fh);
	if ($output) {
	if (open(my $fh,'>',$fullpath)) {
	print $fh $output;
	close($fh);
	}
	}
	}
	}
	return;
	}
	}

	sub letter_to_digits {
	my %lettdig = (
	A => 1,
	B => 2,
	C => 3,
	D => 4,
	E => 5,
	F => 6,
	G => 7,
	H => 8,
	I => 9,
	J => 0,
	);
	return %lettdig;
	}

	sub get_scantron_config {
	my ($which,$cdom) = @_;
	my @lines = &get_scantronformat_file($cdom);
	my %config;
	#FIXME probably should move to XML it has already gotten a bit much now
	foreach my $line (@lines) {
	my ($name,$descrip)=split(/:/,$line);
	if ($name ne $which ) { next; }
	chomp($line);
	my @config=split(/:/,$line);
	$config{'name'}=$config[0];
	$config{'description'}=$config[1];
	$config{'CODElocation'}=$config[2];
	$config{'CODEstart'}=$config[3];
	$config{'CODElength'}=$config[4];
	$config{'IDstart'}=$config[5];
	$config{'IDlength'}=$config[6];
	$config{'Qstart'}=$config[7];
	$config{'Qlength'}=$config[8];
	$config{'Qoff'}=$config[9];
	$config{'Qon'}=$config[10];
	$config{'PaperID'}=$config[11];
	$config{'PaperIDlength'}=$config[12];
	$config{'FirstName'}=$config[13];
	$config{'FirstNamelength'}=$config[14];
	$config{'LastName'}=$config[15];
	$config{'LastNamelength'}=$config[16];
	$config{'BubblesPerRow'}=$config[17];
	last;
	}
	return %config;
	}

	sub get_scantronformat_file {
	my ($cdom) = @_;
	if ($cdom eq '') {
	$cdom= $env{'course.'.$env{'request.course.id'}.'.domain'};
	}
	my %domconfig = &get_dom('configuration',['scantron'],$cdom);
	my $gottab = 0;
	my @lines;
	if (ref($domconfig{'scantron'}) eq 'HASH') {
	if ($domconfig{'scantron'}{'scantronformat'} ne '') {
	my $formatfile = &getfile($perlvar{'lonDocRoot'}.$domconfig{'scantron'}{'scantronformat'});
	if ($formatfile ne '-1') {
	@lines = split("\n",$formatfile,-1);
	$gottab = 1;
	}
	}
	}
	if (!$gottab) {
	my $confname = $cdom.'-domainconfig';
	my $default = $perlvar{'lonDocRoot'}.'/res/'.$cdom.'/'.$confname.'/default.tab';
	my $formatfile = &getfile($default);
	if ($formatfile ne '-1') {
	@lines = split("\n",$formatfile,-1);
	$gottab = 1;
	}
	}
	if (!$gottab) {
	my @domains = &current_machine_domains();
	if (grep(/^\Q$cdom\E$/,@domains)) {
	if (open(my $fh,'<',$perlvar{'lonTabDir'}.'/scantronformat.tab')) {
	@lines = <$fh>;
	close($fh);
	}
	} else {
	if (open(my $fh,'<',$perlvar{'lonTabDir'}.'/default_scantronformat.tab')) {
	@lines = <$fh>;
	close($fh);
	}
	}
	}
	return @lines;
	}

sub removeuploadedurl {	sub removeuploadedurl {
my ($url)=@_;	my ($url)=@_;
my (undef,undef,$udom,$uname,$fname)=split('/',$url,5);	my (undef,undef,$udom,$uname,$fname)=split('/',$url,5);
Line 3990 sub flushcourselogs {	Line 4872 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 4330 sub get_my_roles {	Line 5212 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 4551 sub postannounce {	Line 5433 sub postannounce {

sub getannounce {	sub getannounce {

if (open(my $fh,$perlvar{'lonDocRoot'}.'/announcement.txt')) {	if (open(my $fh,"<",$perlvar{'lonDocRoot'}.'/announcement.txt')) {
my $announcement='';	my $announcement='';
while (my $line = <$fh>) { $announcement .= $line; }	while (my $line = <$fh>) { $announcement .= $line; }
close($fh);	close($fh);
Line 4627 sub courseiddump {	Line 5509 sub courseiddump {
if (($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 4652 sub courseiddump {	Line 5534 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 4848 sub set_first_access {	Line 5730 sub set_first_access {
}	}
$cachedkey='';	$cachedkey='';
my $firstaccess=&get_first_access($type,$symb,$map);	my $firstaccess=&get_first_access($type,$symb,$map);
if (!$firstaccess) {	if ($firstaccess) {
	&logthis("First access time already set ($firstaccess) when attempting ".
	"to set new value (type: $type, extent: $res) for $uname:$udom ".
	"in $courseid");
	return 'already_set';
	} else {
my $start = time;	my $start = time;
my $putres = &put('firstaccesstimes',{"$courseid\0$res"=>$start},	my $putres = &put('firstaccesstimes',{"$courseid\0$res"=>$start},
$udom,$uname);	$udom,$uname);
Line 4861 sub set_first_access {	Line 5748 sub set_first_access {
'course.'.$courseid.'.timerinterval.'.$res => $interval,	'course.'.$courseid.'.timerinterval.'.$res => $interval,
}	}
);	);
	if (($cachedtime) && (abs($start-$cachedtime) < 5)) {
	$cachedtimes{"$courseid\0$res"} = $start;
	}
	} elsif ($putres ne 'refused') {
	&logthis("Result: $putres when attempting to set first access time ".
	"(type: $type, extent: $res) for $uname:$udom in $courseid");
}	}
return $putres;	return $putres;
}	}
Line 4868 sub set_first_access {	Line 5761 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 5546 sub privileged {	Line 6354 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 5573 sub privileged {	Line 6381 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 > $now);
}	}
}	}
Line 5611 sub privileged_by_domain {	Line 6419 sub privileged_by_domain {
my ($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 6044 sub check_adhoc_privs {	Line 6852 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,$tpend);
Line 6086 sub set_adhoc_privileges {	Line 6894 sub set_adhoc_privileges {
my ($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 6149 sub unserialize {	Line 6958 sub unserialize {
return {} if $rep =~ /^error/;	return {} if $rep =~ /^error/;

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

# see Lond::dump_with_regexp	# see Lond::dump_with_regexp
# if $escapedkeys hash keys won't get unescaped.	# if $escapedkeys hash keys won't get unescaped.
Line 6171 sub dump {	Line 6981 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 $rep=&reply("dump:$udomain:$uname:$namespace:$regexp:$range",$uhome);	my $rep=&reply("dump:$udomain:$uname:$namespace:$regexp:$range",$uhome);
my @pairs=split(/\&/,$rep);	my @pairs=split(/\&/,$rep);
Line 6183 sub dump {	Line 6993 sub dump {
if (!($rep =~ /^error/ )) {	if (!($rep =~ /^error/ )) {
foreach my $item (@pairs) {	foreach my $item (@pairs) {
my ($key,$value)=split(/=/,$item,2);	my ($key,$value)=split(/=/,$item,2);
$key = &unescape($key) unless ($escapedkeys);	$key = unescape($key) unless $escapedkeys;
	#$key = &unescape($key);
next if ($key =~ /^error: 2 /);	next if ($key =~ /^error: 2 /);
$returnhash{$key}=&thaw_unescape($value);	$returnhash{$key}=&thaw_unescape($value);
}	}
Line 6227 sub currentdump {	Line 7038 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,$uhome);
Line 6237 sub currentdump {	Line 7048 sub currentdump {
#	#
my %returnhash=();	my %returnhash=();
#	#
if ($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,$sname,'.');
Line 6488 sub tmpdel {	Line 7299 sub tmpdel {
return &reply("tmpdel:$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 6508 sub get_timebased_id {	Line 7319 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 6663 sub get_portfolio_access {	Line 7474 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;	$allowed = 1;
last;	last;
}	}
}	}
}	}
Line 6857 sub usertools_access {	Line 7668 sub usertools_access {
unofficial => 1,	unofficial => 1,
community => 1,	community => 1,
textbook => 1,	textbook => 1,
	placement => 1,
	lti => 1,
);	);
} elsif ($context eq 'requestauthor') {	} elsif ($context eq 'requestauthor') {
%tools = (	%tools = (
Line 6891 sub usertools_access {	Line 7704 sub usertools_access {

my ($toolstatus,$inststatus,$envkey);	my ($toolstatus,$inststatus,$envkey);
if ($context eq 'requestauthor') {	if ($context eq 'requestauthor') {
$envkey = $context;	$envkey = $context;
} else {	} else {
$envkey = $context.'.'.$tool;	$envkey = $context.'.'.$tool;
}	}
Line 7053 sub is_advanced_user {	Line 7866 sub is_advanced_user {
}	}

sub check_can_request {	sub check_can_request {
my ($dom,$can_request,$request_domains) = @_;	my ($dom,$can_request,$request_domains,$uname,$udom) = @_;
my $canreq = 0;	my $canreq = 0;
	if (($env{'user.name'} ne '') && ($env{'user.domain'} ne '')) {
	$uname = $env{'user.name'};
	$udom = $env{'user.domain'};
	}
my ($types,$typename) = &Apache::loncommon::course_types();	my ($types,$typename) = &Apache::loncommon::course_types();
my @options = ('approval','validate','autolimit');	my @options = ('approval','validate','autolimit');
my $optregex = join('\|',@options);	my $optregex = join('\|',@options);
if ((ref($can_request) eq 'HASH') && (ref($types) eq 'ARRAY')) {	if ((ref($can_request) eq 'HASH') && (ref($types) eq 'ARRAY')) {
foreach my $type (@{$types}) {	foreach my $type (@{$types}) {
if (&usertools_access($env{'user.name'},	if (&usertools_access($uname,$udom,$type,undef,
$env{'user.domain'},	'requestcourses')) {
$type,undef,'requestcourses')) {
$canreq ++;	$canreq ++;
if (ref($request_domains) eq 'HASH') {	if (ref($request_domains) eq 'HASH') {
push(@{$request_domains->{$type}},$env{'user.domain'});	push(@{$request_domains->{$type}},$udom);
}	}
if ($dom eq $env{'user.domain'}) {	if ($dom eq $udom) {
$can_request->{$type} = 1;	$can_request->{$type} = 1;
}	}
}	}
if ($env{'environment.reqcrsotherdom.'.$type} ne '') {	if (($env{'user.name'} ne '') && ($env{'user.domain'} ne '') &&
	($env{'environment.reqcrsotherdom.'.$type} ne '')) {
my @curr = split(',',$env{'environment.reqcrsotherdom.'.$type});	my @curr = split(',',$env{'environment.reqcrsotherdom.'.$type});
if (@curr > 0) {	if (@curr > 0) {
foreach my $item (@curr) {	foreach my $item (@curr) {
Line 7088 sub check_can_request {	Line 7905 sub check_can_request {
}	}
}	}
}	}
unless($dom eq $env{'user.domain'}) {	unless ($dom eq $env{'user.domain'}) {
$canreq ++;	$canreq ++;
if (grep(/^\Q$dom\E:($optregex)(=?\d*)$/,@curr)) {	if (grep(/^\Q$dom\E:($optregex)(=?\d*)$/,@curr)) {
$can_request->{$type} = 1;	$can_request->{$type} = 1;
Line 7218 sub allowed {	Line 8035 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 7335 sub allowed {	Line 8155 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 7349 sub allowed {	Line 8195 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 $deeplinkblock = &deeplink_check($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);
Line 7369 sub allowed {	Line 8218 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 $deeplinkblock = &deeplink_check($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($priv,$symb,$refuri);
Line 7391 sub allowed {	Line 8243 sub allowed {
&& &is_portfolio_url($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 7419 sub allowed {	Line 8271 sub allowed {

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

	# 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 7474 sub allowed {	Line 8336 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 $deeplinkblock = &deeplink_check($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,$symb,$refuri);
Line 7590 sub allowed {	Line 8455 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 7600 sub allowed {	Line 8465 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'});	$env{'request.course.id'});
Line 7642 sub allowed {	Line 8507 sub allowed {
return 'A';	return 'A';
} elsif ($thisallowed eq 'B') {	} elsif ($thisallowed eq 'B') {
return 'B';	return 'B';
	} elsif ($thisallowed eq 'D') {
	return 'D';
}	}
return 'F';	return 'F';
}	}
Line 7658 sub constructaccess {	Line 8525 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 7679 sub constructaccess {	Line 8546 sub constructaccess {
$ownerhome = &homeserver($ownername,$ownerdomain);	$ownerhome = &homeserver($ownername,$ownerdomain);
return ($ownername,$ownerdomain,$ownerhome);	return ($ownername,$ownerdomain,$ownerhome);
}	}
	if ($env{'request.course.id'}) {
	if (($ownername eq $env{'course.'.$env{'request.course.id'}.'.num'}) &&
	($ownerdomain eq $env{'course.'.$env{'request.course.id'}.'.domain'})) {
	if (&allowed('mdc',$env{'request.course.id'})) {
	$ownerhome = $env{'course.'.$env{'request.course.id'}.'.home'};
	return ($ownername,$ownerdomain,$ownerhome);
	}
	}
	}
}	}

# We don't have any access right now. If we are not possibly going to do anything about this,	# We don't have any access right now. If we are not possibly going to do anything about this,
Line 7721 sub constructaccess {	Line 8597 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).	# 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,$udom,$blocks)=@_;
if (($uname ne '') && ($udom ne '')) {	if (($uname ne '') && ($udom ne '')) {
if (($cacheduser eq $uname.':'.$udom) &&	if (($cacheduser eq $uname.':'.$udom) &&
(abs($cachedlast-time)<5)) {	(abs($cachedlast-time)<5)) {
return;	return;
Line 7770 sub get_commblock_resources {	Line 8646 sub get_commblock_resources {
} 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 $now = time;
Line 7782 sub get_commblock_resources {	Line 8658 sub get_commblock_resources {
if (ref($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 7807 sub get_commblock_resources {	Line 8683 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)) {	if (ref($navmap)) {
my $res = $navmap->getBySymb($item);	my $res = $navmap->getBySymb($item);
push(@to_test,$res);	push(@to_test,$res);
}	}
} else {	} else {
Line 7832 sub get_commblock_resources {	Line 8708 sub get_commblock_resources {
}	}
}	}
if ($interval[0] =~ /^(\d+)/) {	if ($interval[0] =~ /^(\d+)/) {
my $timelimit = $1;	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],$item);
Line 7888 sub has_comm_blocking {	Line 8764 sub has_comm_blocking {
}	}
if ($symb) {	if ($symb) {
@symbs = ($symb);	@symbs = ($symb);
} elsif (keys(%possibles)) {	} elsif (keys(%possibles)) {
@symbs = keys(%possibles);	@symbs = keys(%possibles);
}	}
my $noblock;	my $noblock;
Line 7926 sub has_comm_blocking {	Line 8802 sub has_comm_blocking {
}	}
}	}

# -------------------------------- 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 ($login,$switchrole,$allow);
	if ($env{'request.deeplink.login'} =~ m{^\Q/tiny/$cdom/\E(\w+)$}) {
	my $key = $1;
	my $tinyurl;
	my ($result,$cached)=&Apache::lonnet::is_cached_new('tiny',$cdom."\0".$key);
	if (defined($cached)) {
	$tinyurl = $result;
	} else {
	my $configuname = &Apache::lonnet::get_domainconfiguser($cdom);
	my %currtiny = &Apache::lonnet::get('tiny',[$key],$cdom,$configuname);
	if ($currtiny{$key} ne '') {
	$tinyurl = $currtiny{$key};
	&Apache::lonnet::do_cache_new('tiny',$cdom."\0".$key,$currtiny{$key},600);
	}
	}
	if ($tinyurl ne '') {
	my ($cnumreq,$posslogin) = split(/\&/,$tinyurl);
	if ($cnumreq eq $cnum) {
	$login = $posslogin;
	} else {
	$switchrole = 1;
	}
	}
	}
	foreach my $symb (@symbs) {
	last if ($allow);
	my $deeplink = &EXT("resource.0.deeplink",$symb);
	if ($deeplink eq '') {
	$allow = 1;
	} else {
	my ($listed,$scope,$access) = split(/,/,$deeplink);
	if ($access eq 'any') {
	$allow = 1;
	} elsif ($login) {
	if ($access eq 'only') {
	if ($scope eq 'res') {
	if ($symb eq $login) {
	$allow = 1;
	}
	} elsif ($scope eq 'map') {
	#FIXME Compare map for $env{'request.deeplink.login'} with map for $symb
	} elsif ($scope eq 'rec') {
	#FIXME Recurse up for $env{'request.deeplink.login'} with map for $symb
	}
	} else {
	my ($acctype,$item) = split(/:/,$access);
	if (($acctype eq 'lti') && ($env{'user.linkprotector'})) {
	if (grep(/^\Q$item\E$/,split(/,/,$env{'user.linkprotector'}))) {
	my %tinyurls = &get('tiny',[$symb],$cdom,$cnum);
	if (grep(/\Q$tinyurls{$symb}\E$/,split(/,/,$env{'user.linkproturis'}))) {
	$allow = 1;
	}
	}
	} elsif (($acctype eq 'key') && ($env{'user.deeplinkkey'})) {
	if (grep(/^\Q$item\E$/,split(/,/,$env{'user.deeplinkkey'}))) {
	my %tinyurls = &get('tiny',[$symb],$cdom,$cnum);
	if (grep(/\Q$tinyurls{$symb}\E$/,split(/,/,$env{'user.keyedlinkuri'}))) {
	$allow = 1;
	}
	}
	}
	}
	}
	}
	}
	return if ($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 8052 sub metadata_query {	Line 9015 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 8170 sub fetch_enrollment_query {	Line 9133 sub fetch_enrollment_query {
if ($xml_classlist =~ /^error/) {	if ($xml_classlist =~ /^error/) {
&logthis('fetch_enrollment_query - autoretrieve error: '.$xml_classlist.' for '.$filename.' from server: '.$homeserver.' '.$context.' '.$cnum);	&logthis('fetch_enrollment_query - autoretrieve error: '.$xml_classlist.' for '.$filename.' from server: '.$homeserver.' '.$context.' '.$cnum);
} else {	} else {
if ( open(FILE,">$destname") ) {	if ( open(FILE,">",$destname) ) {
print FILE &unescape($xml_classlist);	print FILE &unescape($xml_classlist);
close(FILE);	close(FILE);
} else {	} else {
Line 8187 sub fetch_enrollment_query {	Line 9150 sub fetch_enrollment_query {
}	}

sub get_query_reply {	sub get_query_reply {
my ($queryid,$sleep,$loopmax) = @_;	my ($queryid,$sleep,$loopmax) = @_;;
if (($sleep eq '') \|\| ($sleep !~ /^\d+\.?\d*$/)) {	if (($sleep eq '') \|\| ($sleep !~ /^\d+\.?\d*$/)) {
$sleep = 0.2;	$sleep = 0.2;
}	}
Line 8199 sub get_query_reply {	Line 9162 sub get_query_reply {
for (1..$loopmax) {	for (1..$loopmax) {
sleep($sleep);	sleep($sleep);
if (-e $replyfile.'.end') {	if (-e $replyfile.'.end') {
if (open(my $fh,$replyfile)) {	if (open(my $fh,"<",$replyfile)) {
$reply = join('',<$fh>);	$reply = join('',<$fh>);
close($fh);	close($fh);
} else { return 'error: reply_file_error'; }	} else { return 'error: reply_file_error'; }
Line 8591 sub auto_validate_class_sec {	Line 9554 sub auto_validate_class_sec {
return $response;	return $response;
}	}

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

sub auto_crsreq_update {	sub auto_crsreq_update {
my ($cdom,$cnum,$crstype,$action,$ownername,$ownerdomain,$fullname,$title,	my ($cdom,$cnum,$crstype,$action,$ownername,$ownerdomain,$fullname,$title,
$code,$accessstart,$accessend,$inbound) = @_;	$code,$accessstart,$accessend,$inbound) = @_;
Line 8607 sub auto_crsreq_update {	Line 9597 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 $item (@items) {
Line 8867 sub plaintext {	Line 9858 sub plaintext {
my %rolenames = (	my %rolenames = (
Course => 'std',	Course => 'std',
Community => 'alt1',	Community => 'alt1',
	Placement => 'std',
);	);
if ($cid ne '') {	if ($cid ne '') {
if ($env{'course.'.$cid.'.'.$short.'.plaintext'} ne '') {	if ($env{'course.'.$cid.'.'.$short.'.plaintext'} ne '') {
Line 8948 sub assignrole {	Line 9940 sub assignrole {
}	}
if ($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 && (($context eq 'course') \|\| ($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,$cnum,('internal.courseowner'));
Line 8968 sub assignrole {	Line 9960 sub assignrole {
}	}
}	}
}	}
} elsif (($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'})) {
	$refused = '';
	}
} elsif ($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 '' && $env{'user.domain'} ne '')) {
Line 8988 sub assignrole {	Line 9984 sub assignrole {
}	}
}	}
} elsif ($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 = '';	$refused = '';
Line 8996 sub assignrole {	Line 9992 sub assignrole {
my %domdefaults = &get_domain_defaults($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 9090 sub assignrole {	Line 10086 sub assignrole {
$context);	$context);
} elsif (($role eq 'ca') \|\| ($role eq 'aa')) {	} elsif (($role eq 'ca') \|\| ($role eq 'aa')) {
&coauthorrolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,	&coauthorrolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,
$context);	$context);
}	}
if ($role eq 'cc') {	if ($role eq 'cc') {
&autoupdate_coowners($url,$end,$start,$uname,$udom);	&autoupdate_coowners($url,$end,$start,$uname,$udom);
Line 9189 sub store_coowners {	Line 10185 sub store_coowners {
sub modifyuserauth {	sub modifyuserauth {
my ($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'});
Line 9235 sub modifyuser {	Line 10246 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 = $desiredhome;
Line 9280 sub modifyuser {	Line 10295 sub modifyuser {
'current user id "'.$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 9405 sub modifystudent {	Line 10420 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 $reply;
}	}
Line 9683 sub is_course {	Line 10698 sub is_course {
my ($cdom, $cnum) = scalar(@_) == 1 ?	my ($cdom, $cnum) = scalar(@_) == 1 ?
($_[0] =~ /^($match_domain)_($match_courseid)$/) : @_;	($_[0] =~ /^($match_domain)_($match_courseid)$/) : @_;

return unless $cdom and $cnum;	return unless (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/));
	my $uhome=&homeserver($cnum,$cdom);
my %courses = &courseiddump($cdom, '.', 1, '.', '.', $cnum, undef, undef,	my $iscourse;
'.');	if (grep { $_ eq $uhome } current_machine_ids()) {
	$iscourse = &LONCAPA::Lond::is_course($cdom,$cnum);
return unless(exists($courses{$cdom.'_'.$cnum}));	} else {
	my $hashid = $cdom.':'.$cnum;
	($iscourse,my $cached) = &is_cached_new('iscourse',$hashid);
	unless (defined($cached)) {
	my %courses = &courseiddump($cdom, '.', 1, '.', '.',
	$cnum,undef,undef,'.');
	$iscourse = 0;
	if (exists($courses{$cdom.'_'.$cnum})) {
	$iscourse = 1;
	}
	&do_cache_new('iscourse',$hashid,$iscourse,3600);
	}
	}
	return unless ($iscourse);
return wantarray ? ($cdom, $cnum) : $cdom.'_'.$cnum;	return wantarray ? ($cdom, $cnum) : $cdom.'_'.$cnum;
}	}

Line 9824 sub save_selected_files {	Line 10852 sub save_selected_files {
my ($user, $path, @files) = @_;	my ($user, $path, @files) = @_;
my $filename = $user."savedfiles";	my $filename = $user."savedfiles";
my @other_files = &files_not_in_path($user, $path);	my @other_files = &files_not_in_path($user, $path);
open (OUT, '>'.$tmpdir.$filename);	open (OUT,'>',LONCAPA::tempdir().$filename);
foreach my $file (@files) {	foreach my $file (@files) {
print (OUT $env{'form.currentpath'}.$file."\n");	print (OUT $env{'form.currentpath'}.$file."\n");
}	}
Line 9838 sub save_selected_files {	Line 10866 sub save_selected_files {
sub clear_selected_files {	sub clear_selected_files {
my ($user) = @_;	my ($user) = @_;
my $filename = $user."savedfiles";	my $filename = $user."savedfiles";
open (OUT, '>'.LONCAPA::tempdir().$filename);	open (OUT,'>',LONCAPA::tempdir().$filename);
print (OUT undef);	print (OUT undef);
close (OUT);	close (OUT);
return ("ok");	return ("ok");
Line 9848 sub files_in_path {	Line 10876 sub files_in_path {
my ($user, $path) = @_;	my ($user, $path) = @_;
my $filename = $user."savedfiles";	my $filename = $user."savedfiles";
my %return_files;	my %return_files;
open (IN, '<'.LONCAPA::tempdir().$filename);	open (IN,'<',LONCAPA::tempdir().$filename);
while (my $line_in = <IN>) {	while (my $line_in = <IN>) {
chomp ($line_in);	chomp ($line_in);
my @paths_and_file = split (m!/!, $line_in);	my @paths_and_file = split (m!/!, $line_in);
Line 9870 sub files_not_in_path {	Line 10898 sub files_not_in_path {
my $filename = $user."savedfiles";	my $filename = $user."savedfiles";
my @return_files;	my @return_files;
my $path_part;	my $path_part;
open(IN, '<'.LONCAPA::.$filename);	open(IN, '<',LONCAPA::tempdir().$filename);
while (my $line = <IN>) {	while (my $line = <IN>) {
#ok, I know it's clunky, but I want it to work	#ok, I know it's clunky, but I want it to work
my @paths_and_file = split(m\|/\|, $line);	my @paths_and_file = split(m\|/\|, $line);
Line 9887 sub files_not_in_path {	Line 10915 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 10031 sub modify_access_controls {	Line 11143 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 10278 sub dirlist {	Line 11473 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 10291 sub dirlist {	Line 11487 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 10367 sub stat_file {	Line 11563 sub stat_file {
return ();	return ();
}	}

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

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

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

# gets the value of a specific preevaluated condition	# gets the value of a specific preevaluated condition
Line 10531 sub get_userresdata {	Line 11836 sub get_userresdata {
# $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.
	# $what - Last part of param identifier.
# @which - Array of names of resources desired.	# @which - Array of names of resources desired.
# Returns:	# Returns:
# The value of the first reasource in @which that is found in the	# The value of the first reasource in @which that is found in the
Line 10540 sub get_userresdata {	Line 11852 sub get_userresdata {
# 'user', an undefined reference is returned.	# 'user', an undefined reference is returned.
# If none of the resources are found, an undef is returned	# If none of the resources are found, an undef is returned
sub resdata {	sub resdata {
my ($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,$domain);
Line 10549 sub resdata {	Line 11862 sub resdata {
}	}
if (!ref($result)) { return $result; }	if (!ref($result)) { return $result; }
foreach my $item (@which) {	foreach my $item (@which) {
if (ref($item) eq 'ARRAY') {	if ($item->[1] eq 'course') {
if (defined($result->{$item->[0]})) {	if ((ref($recurseup) eq 'ARRAY') && (ref($recursed) eq 'SCALAR')) {
return [$result->{$item->[0]},$item->[1]];	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 undef;	return undef;
}	}

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

sub get_numsuppfiles {	sub get_numsuppfiles {
Line 10597 sub get_numsuppfiles {	Line 11929 sub get_numsuppfiles {
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 $errors) = (0,0);	($suppcount,my $supptools,my $errors) = (0,0,0);
my $suppmap = 'supplemental.sequence';	my $suppmap = 'supplemental.sequence';
($suppcount,$errors) =	($suppcount,$supptools,$errors) =
&Apache::loncommon::recurse_supplemental($cnum,$cdom,$suppmap,$suppcount,$errors);	&Apache::loncommon::recurse_supplemental($cnum,$cdom,$suppmap,$suppcount,
	$supptools,$errors);
}	}
&do_cache_new('suppcount',$hashid,$suppcount,600);	&do_cache_new('suppcount',$hashid,$suppcount,600);
}	}
Line 10611 sub get_numsuppfiles {	Line 11944 sub get_numsuppfiles {
# EXT resource caching routines	# EXT resource caching routines
#	#

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

sub clear_EXT_cache_status {	sub clear_EXT_cache_status {
&delenv('cache.EXT.');	&delenv('cache.EXT.');
}	}
Line 10788 sub EXT {	Line 12131 sub EXT {
}	}
}	}

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

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

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

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

if (($env{'user.name'} eq $uname) &&	if (($env{'user.name'} eq $uname) &&
($env{'user.domain'} eq $udom)) {	($env{'user.domain'} eq $udom)) {
$section=$env{'request.course.sec'};	$section=$env{'request.course.sec'};
Line 10821 sub EXT {	Line 12163 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 10839 sub EXT {	Line 12185 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 10864 sub EXT {	Line 12213 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 10873 sub EXT {	Line 12223 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($coursereply); }
}	}
Line 10899 sub EXT {	Line 12255 sub EXT {
if (defined($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 10924 sub EXT {	Line 12280 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 $ENV{'REMOTE_ADDR'};
	}
}	}
return '';	return '';
}	}
Line 10941 sub get_reply {	Line 12301 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 10964 sub sort_course_groups { # Sort groups b	Line 12353 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 11035 sub add_prefix_and_part {	Line 12424 sub add_prefix_and_part {

my %metaentry;	my %metaentry;
my %importedpartids;	my %importedpartids;
	my %importedrespids;
sub metadata {	sub metadata {
my ($uri,$what,$liburi,$prefix,$depthcount)=@_;	my ($uri,$what,$toolsymb,$liburi,$prefix,$depthcount)=@_;
$uri=&declutter($uri);	$uri=&declutter($uri);
# if it is a non metadata possible uri return quickly	# if it is a non metadata possible uri return quickly
if (($uri eq '') \|\|	if (($uri eq '') \|\|
Line 11060 sub metadata {	Line 12450 sub metadata {
my ($result,$cached)=&is_cached_new('meta',$uri);	my ($result,$cached)=&is_cached_new('meta',$uri);
if (defined($cached)) { return $result->{':'.$what}; }	if (defined($cached)) { return $result->{':'.$what}; }
}	}

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

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

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

	# Imported responseids would go here
	my $importedresponses=0;
#	#
# Is this a recursive call for a library?	# Is this a recursive call for a library?
#	#
Line 11159 sub metadata {	Line 12610 sub metadata {
my $dir=$filename;	my $dir=$filename;
$dir=~s\|[^/]*$\|\|;	$dir=~s\|[^/]*$\|\|;
$location=&filelocation($dir,$location);	$location=&filelocation($dir,$location);

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

# Load and inspect imported file
my $impfile=&getfile($location);
my @impfilepartids=($impfile=~/<part[^>]id\s=\s[\"\']([^\"\']+)[\"\'][^>]>/gs);
if ($#impfilepartids>=0) {	if ($#impfilepartids>=0) {
# This problem had parts	# This problem had parts
$importedpartids{$token->[2]->{'id'}}=join(',',@impfilepartids);	$importedpartids{$token->[2]->{'id'}}=join(',',@impfilepartids);
Line 11190 sub metadata {	Line 12691 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 11274 sub metadata {	Line 12789 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 11288 sub metadata {	Line 12803 sub metadata {
grep { ! $seen{$_} ++ } (split(',',$metaentry{':packages'}));	grep { ! $seen{$_} ++ } (split(',',$metaentry{':packages'}));
$metaentry{':packages'} = join(',',@uniq_packages);	$metaentry{':packages'} = join(',',@uniq_packages);

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

$metaentry{':keys'} = join(',',keys(%metathesekeys));	$metaentry{':keys'} = join(',',keys(%metathesekeys));
&metadata_generate_part0(\%metathesekeys,\%metaentry,$uri);	&metadata_generate_part0(\%metathesekeys,\%metaentry,$uri);
$metaentry{':allpossiblekeys'}=join(',',keys(%metathesekeys));	$metaentry{':allpossiblekeys'}=join(',',keys(%metathesekeys));
&do_cache_new('meta',$uri,\%metaentry,$cachetime);	unless ($liburi) {
	&do_cache_new('meta',$uri,\%metaentry,$cachetime);
	}
# this is the end of "was not already recently cached	# this is the end of "was not already recently cached
}	}
return $metaentry{':'.$what};	return $metaentry{':'.$what};
Line 11582 sub symbverify {	Line 13128 sub symbverify {
$ids=$bighash{'ids_'.&clutter($thisurl)};	$ids=$bighash{'ids_'.&clutter($thisurl)};
}	}
unless ($ids) {	unless ($ids) {
my $idkey = 'ids_'.($thisurl =~ m{^/}? '' : '/').$thisurl;	my $idkey = 'ids_'.($thisurl =~ m{^/}? '' : '/').$thisurl;
$ids=$bighash{$idkey};	$ids=$bighash{$idkey};
}	}
if ($ids) {	if ($ids) {
Line 11598 sub symbverify {	Line 13144 sub symbverify {
if (ref($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;	$okay=1;
last;	last;
}	}
}	}
}	}
}	}
untie(%bighash);	untie(%bighash);
}	}
Line 11689 sub symbread {	Line 13235 sub symbread {
# no filename provided? try from environment	# no filename provided? try from environment
unless ($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 11748 sub symbread {	Line 13294 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;	$possibles->{$syval} = 1;
}	}
if ($checkforblock) {	if ($checkforblock) {
my @blockers = &has_comm_blocking('bre',$syval,$bighash{'src_'.$ids});	my @blockers = &has_comm_blocking('bre',$syval,$bighash{'src_'.$ids});
Line 11757 sub symbread {	Line 13303 sub symbread {
return;	return;
}	}
}	}
} 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 11765 sub symbread {	Line 13311 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($possibles) eq 'HASH') {	if (ref($possibles) eq 'HASH') {
$possibles->{$syval} = 1;	$possibles->{$syval} = 1;
}	}
Line 11947 sub rndseed {	Line 13493 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 12132 sub rndseed_CODE_64bit5 {	Line 13679 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 12316 sub repcopy_userfile {	Line 13863 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 12349 sub tokenwrapper {	Line 13896 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='.$perlvar{'lonHostID'};
} else {	} else {
Line 12367 sub getuploaded {	Line 13915 sub getuploaded {
my ($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 12389 sub readfile {	Line 13937 sub readfile {
my $file = shift;	my $file = shift;
if ( (! -e $file ) \|\| ($file eq '') ) { return -1; };	if ( (! -e $file ) \|\| ($file eq '') ) { return -1; };
my $fh;	my $fh;
open($fh,"<$file");	open($fh,"<",$file);
my $a='';	my $a='';
while (my $line = <$fh>) { $a .= $line; }	while (my $line = <$fh>) { $a .= $line; }
return $a;	return $a;
Line 12502 sub machine_ids {	Line 14050 sub machine_ids {

sub additional_machine_domains {	sub additional_machine_domains {
my @domains;	my @domains;
open(my $fh,"<$perlvar{'lonTabDir'}/expected_domains.tab");	open(my $fh,"<","$perlvar{'lonTabDir'}/expected_domains.tab");
while( my $line = <$fh>) {	while( my $line = <$fh>) {
$line =~ s/\s//g;	$line =~ s/\s//g;
push(@domains,$line);	push(@domains,$line);
Line 12523 sub default_login_domain {	Line 14071 sub default_login_domain {
return $domain;	return $domain;
}	}

	sub shared_institution {
	my ($dom) = @_;
	my $same_intdom;
	my $hostintdom = &internet_dom($perlvar{'lonHostID'});
	if ($hostintdom ne '') {
	my %iphost = &get_iphost();
	my $primary_id = &domain($dom,'primary');
	my $primary_ip = &get_host_ip($primary_id);
	if (ref($iphost{$primary_ip}) eq 'ARRAY') {
	foreach my $id (@{$iphost{$primary_ip}}) {
	my $intdom = &internet_dom($id);
	if ($intdom eq $hostintdom) {
	$same_intdom = 1;
	last;
	}
	}
	}
	}
	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;
	}

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

sub declutter {	sub declutter {
Line 12648 sub get_dns {	Line 14255 sub get_dns {
}	}

my %alldns;	my %alldns;
open(my $config,"<$perlvar{'lonTabDir'}/hosts.tab");	if (open(my $config,"<","$perlvar{'lonTabDir'}/hosts.tab")) {
foreach my $dns (<$config>) {	foreach my $dns (<$config>) {
next if ($dns !~ /^\^(\S*)/x);	next if ($dns !~ /^\^(\S*)/x);
my $line = $1;	my $line = $1;
my ($host,$protocol) = split(/:/,$line);	my ($host,$protocol) = split(/:/,$line);
if ($protocol ne 'https') {	if ($protocol ne 'https') {
$protocol = 'http';	$protocol = 'http';
	}
	$alldns{$host} = $protocol;
}	}
$alldns{$host} = $protocol;	close($config);
}	}
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;
$ua->timeout(30);
my $request=new HTTP::Request('GET',"$alldns{$dns}://$dns$url");	my $request=new HTTP::Request('GET',"$alldns{$dns}://$dns$url");
my $response=$ua->request($request);	my $response = &LONCAPA::LWPReq::makerequest('',$request,'',\%perlvar,30,0);
delete($alldns{$dns});	delete($alldns{$dns});
next if ($response->is_error());	next if ($response->is_error());
my @content = split("\n",$response->content);	if ($url eq '/adm/dns/loncapaCRL') {
unless ($nocache) {	return &$func($response);
&do_cache_new('dns',$url,\@content,302460*60);	} else {
	my @content = split("\n",$response->content);
	unless ($nocache) {
	&do_cache_new('dns',$url,\@content,302460*60);
	}
	&$func(\@content,$hashref);
	return;
	}
	}
	my $which = (split('/',$url,4))[3];
	if ($which eq 'loncapaCRL') {
	my $diskfile = "$perlvar{'lonCertificateDirectory'}/$perlvar{'lonnetCertRevocationList'}";
	if (-e $diskfile) {
	&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,$hashref);
}	}
&$func(\@content,$hashref);
return;
}	}
close($config);
my $which = (split('/',$url))[3];
&logthis("unable to contact DNS defaulting to on disk file dns_$which.tab\n");
open($config,"<$perlvar{'lonTabDir'}/dns_$which.tab");
my @content = <$config>;
&$func(\@content,$hashref);
return;	return;
}	}

Line 12706 sub parse_dns_checksums_tab {	Line 14327 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 12738 sub fetch_dns_checksums {	Line 14359 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 ($response) = @_;
	my ($msg,$hadchanges);
	if (ref($response)) {
	my $now = time;
	my $lonca = $perlvar{'lonCertificateDirectory'}.'/'.$perlvar{'lonnetCertificateAuthority'};
	my $tmpcrl = $tmpdir.'/'.$perlvar{'lonnetCertRevocationList'}.'_'.$now.'.'.$$.'.tmp';
	if (open(my $fh,'>',"$tmpcrl")) {
	print $fh $response->content;
	close($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);
	}

# ------------------------------------------------------------ Read domain file	# ------------------------------------------------------------ Read domain file
{	{
my $loaded;	my $loaded;
Line 12769 sub fetch_dns_checksums {	Line 14463 sub fetch_dns_checksums {
my ($ignore_cache,$nocache) = @_;	my ($ignore_cache,$nocache) = @_;
&get_dns('/adm/dns/domain',\&parse_domain_tab,$ignore_cache,$nocache);	&get_dns('/adm/dns/domain',\&parse_domain_tab,$ignore_cache,$nocache);
my $fh;	my $fh;
if (open($fh,"<".$perlvar{'lonTabDir'}.'/domain.tab')) {	if (open($fh,"<",$perlvar{'lonTabDir'}.'/domain.tab')) {
my @lines = <$fh>;	my @lines = <$fh>;
&parse_domain_tab(\@lines);	&parse_domain_tab(\@lines);
}	}
Line 12860 sub fetch_dns_checksums {	Line 14554 sub fetch_dns_checksums {
&purge_remembered();	&purge_remembered();
&reset_domain_info();	&reset_domain_info();
&reset_hosts_ip_info();	&reset_hosts_ip_info();
	undef(%internetdom);
undef(%name_to_host);	undef(%name_to_host);
undef(%hostname);	undef(%hostname);
undef(%hostdom);	undef(%hostdom);
Line 12870 sub fetch_dns_checksums {	Line 14565 sub fetch_dns_checksums {
sub load_hosts_tab {	sub load_hosts_tab {
my ($ignore_cache,$nocache) = @_;	my ($ignore_cache,$nocache) = @_;
&get_dns('/adm/dns/hosts',\&parse_hosts_tab,$ignore_cache,$nocache);	&get_dns('/adm/dns/hosts',\&parse_hosts_tab,$ignore_cache,$nocache);
open(my $config,"<$perlvar{'lonTabDir'}/hosts.tab");	open(my $config,"<","$perlvar{'lonTabDir'}/hosts.tab");
my @config = <$config>;	my @config = <$config>;
&parse_hosts_tab(\@config);	&parse_hosts_tab(\@config);
close($config);	close($config);
Line 12902 sub fetch_dns_checksums {	Line 14597 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 13132 sub all_loncaparevs {	Line 14832 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>) {
chomp($configline);	chomp($configline);
my ($hostid,$loncaparev)=split(/:/,$configline);	my ($hostid,$loncaparev)=split(/:/,$configline);
Line 13148 sub all_loncaparevs {	Line 14848 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") {
if (open(my $config,"<$perlvar{'lonTabDir'}/serverhomeIDs.tab")) {	if (open(my $config,"<","$perlvar{'lonTabDir'}/serverhomeIDs.tab")) {
while (my $configline=<$config>) {	while (my $configline=<$config>) {
chomp($configline);	chomp($configline);
my ($name,$id)=split(/:/,$configline);	my ($name,$id)=split(/:/,$configline);
Line 13177 BEGIN {	Line 14877 BEGIN {

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

while (my $configline=<$config>) {	while (my $configline=<$config>) {
chomp($configline);	chomp($configline);
Line 13191 BEGIN {	Line 14891 BEGIN {
}	}
# ------------------------------------------------------------ Read permissions	# ------------------------------------------------------------ Read permissions
{	{
open(my $config,"<$perlvar{'lonTabDir'}/roles.tab");	open(my $config,"<","$perlvar{'lonTabDir'}/roles.tab");

while (my $configline=<$config>) {	while (my $configline=<$config>) {
chomp($configline);	chomp($configline);
Line 13205 BEGIN {	Line 14905 BEGIN {

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

while (my $configline=<$config>) {	while (my $configline=<$config>) {
chomp($configline);	chomp($configline);
Line 13225 BEGIN {	Line 14925 BEGIN {

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

while (my $configline=<$config>) {	while (my $configline=<$config>) {
if ($configline !~ /\S/ \|\| $configline=~/^#/) { next; }	if ($configline !~ /\S/ \|\| $configline=~/^#/) { next; }
Line 13240 BEGIN {	Line 14940 BEGIN {
close($config);	close($config);
}	}

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

&load_loncaparevs();	&load_loncaparevs();

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

&load_serverhomeIDs();	&load_serverhomeIDs();

Line 13258 BEGIN {	Line 14958 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} = $release;
Line 13271 BEGIN {	Line 14979 BEGIN {
# ---------------------------------------------------------- Read managers table	# ---------------------------------------------------------- Read managers table
{	{
if (-e "$perlvar{'lonTabDir'}/managers.tab") {	if (-e "$perlvar{'lonTabDir'}/managers.tab") {
if (open(my $config,"<$perlvar{'lonTabDir'}/managers.tab")) {	if (open(my $config,"<","$perlvar{'lonTabDir'}/managers.tab")) {
while (my $configline=<$config>) {	while (my $configline=<$config>) {
chomp($configline);	chomp($configline);
next if ($configline =~ /^\#/);	next if ($configline =~ /^\#/);
Line 13290 BEGIN {	Line 14998 BEGIN {

}	}

	# ------------- set default texengine (domain default overrides this)
	{
	$deftex = LONCAPA::texengine();
	}

$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 13531 the answer, and also caches if there is	Line 15244 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 13543 usernames (returns hash: name=>id,name=>	Line 15258 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 13591 The first argument is required, all othe	Line 15326 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 13607 prevents recursive calls to &allowed.	Line 15342 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 13659 provided for types, will default to retu	Line 15395 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 13900 values that are the resource value. I b	Line 15636 values that are the resource value. I b
versions are also returned.	versions are also returned.

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

=back	=back
Line 13937 Returns:	Line 15673 Returns:

=back	=back

	=head2 Bubblesheet Configuration

	=over 4

	=item *

	get_scantron_config($which)

	$which - the name of the configuration to parse from the file.

	Parses and returns the bubblesheet configuration line selected as a
	hash of configuration file fields.


	Returns:
	If the named configuration is not in the file, an empty
	hash is returned.

	a hash with the fields
	name - internal name for the this configuration setup
	description - text to display to operator that describes this config
	CODElocation - if 0 or the string 'none'
	- no CODE exists for this config
	if -1 \|\| the string 'letter'
	- a CODE exists for this config and is
	a string of letters
	Unsupported value (but planned for future support)
	if a positive integer
	- The CODE exists as the first n items from
	the question section of the form
	if the string 'number'
	- The CODE exists for this config and is
	a string of numbers
	CODEstart - (only matter if a CODE exists) column in the line where
	the CODE starts
	CODElength - length of the CODE
	IDstart - column where the student/employee ID starts
	IDlength - length of the student/employee ID info
	Qstart - column where the information from the bubbled
	'questions' start
	Qlength - number of columns comprising a single bubble line from
	the sheet. (usually either 1 or 10)
	Qon - either a single character representing the character used
	to signal a bubble was chosen in the positional setup, or
	the string 'letter' if the letter of the chosen bubble is
	in the final, or 'number' if a number representing the
	chosen bubble is in the file (1->A 0->J)
	Qoff - the character used to represent that a bubble was
	left blank
	PaperID - if the scanning process generates a unique number for each
	sheet scanned the column that this ID number starts in
	PaperIDlength - number of columns that comprise the unique ID number
	for the sheet of paper
	FirstName - column that the first name starts in
	FirstNameLength - number of columns that the first name spans
	LastName - column that the last name starts in
	LastNameLength - number of columns that the last name spans
	BubblesPerRow - number of bubbles available in each row used to
	bubble an answer. (If not specified, 10 assumed).


	=item *

	get_scantronformat_file($cdom)

	$cdom - the course's domain (optional); if not supplied, uses
	domain for current $env{'request.course.id'}.

	Returns an array containing lines from the scantron format file for
	the domain of the course.

	If a url for a custom.tab file is listed in domain's configuration.db,
	lines are from this file.

	Otherwise, if a default.tab has been published in RES space by the
	domainconfig user, lines are from this file.

	Otherwise, fall back to getting lines from the legacy file on the
	local server: /home/httpd/lonTabs/default_scantronformat.tab

	=back

=head2 Resource Subroutines	=head2 Resource Subroutines

=over 4	=over 4
Line 13988 condval($condidx) : value of condition i	Line 15806 condval($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 14003 will be stored for query	Line 15827 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 14026 and is a possible symb for the URL in $t	Line 15850 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 14081 expirespread($uname,$udom,$stype,$usymb)	Line 15905 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 14095 when viewing in course context.	Line 15919 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 14117 homeserver.	Line 15941 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 14268 server ($udom and $uhome are optional)	Line 16092 server ($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 14302 requestcourses: ability to request cours	Line 16126 requestcourses: ability to request cours
=over	=over

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

=back	=back

Line 14323 for course's uploaded content.	Line 16147 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 14334 on your servers.	Line 16158 on your servers.

=over	=over

=item	=item
remotesessions, hostedsessions	remotesessions, hostedsessions

=back	=back
Line 14342 remotesessions, hostedsessions	Line 16166 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 14628 userspace, probably shouldn't be called	Line 16452 userspace, probably shouldn't be called
formname: same as for userfileupload()	formname: same as for userfileupload()
fname: filename (including subdirectories) for the file	fname: filename (including subdirectories) for the file
parser: if 'parse', will parse (html) file to extract references to objects, links etc.	parser: if 'parse', will parse (html) file to extract references to objects, links etc.
	if hashref, and context is scantron, will convert csv format to standard format
allfiles: reference to hash used to store objects found by parser	allfiles: reference to hash used to store objects found by parser
codebase: reference to hash used for codebases of java objects found by parser	codebase: reference to hash used for codebases of java objects found by parser
thumbwidth: width (pixels) of thumbnail to be created for uploaded image	thumbwidth: width (pixels) of thumbnail to be created for uploaded image
Line 14773 Returns:	Line 16598 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 14785 Args: (first three required; six others	Line 16610 Args: (first three required; six others
2. keyid (alphanumeric): name of temporary locking key in hash,	2. keyid (alphanumeric): name of temporary locking key in hash,
e.g., num, boardids	e.g., num, boardids

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

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

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

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

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

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

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

Returns:	Returns:

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

Removed from v.1.1172.2.93.4.3
changed lines
	Added in v.1.1415