loncom/lonnet/perl/lonnet.pm - diff

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Diff for /loncom/lonnet/perl/lonnet.pm between versions 1.1338 and 1.1438

version 1.1338, 2017/02/25 20:30:57	version 1.1438, 2021/01/17 01:58:56
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 Encode;	use Encode;

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

my (%badServerCache, $memcache, %courselogs, %accesshash, %domainrolehash,	my (%badServerCache, $memcache, %courselogs, %accesshash, %domainrolehash,
%userrolehash, $processmarker, $dumpcount, %coursedombuf,	%userrolehash, $processmarker, $dumpcount, %coursedombuf,
Line 97 use Cache::Memcached;	Line 96 use Cache::Memcached;
use Digest::MD5;	use Digest::MD5;
use Math::Random;	use Math::Random;
use File::MMagic;	use File::MMagic;
	use Net::CIDR;
use LONCAPA qw(:DEFAULT :match);	use LONCAPA qw(:DEFAULT :match);
use LONCAPA::Configuration;	use LONCAPA::Configuration;
use LONCAPA::lonmetadata;	use LONCAPA::lonmetadata;
use LONCAPA::Lond;	use LONCAPA::Lond;
	use LONCAPA::LWPReq;
	use LONCAPA::transliterate;

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

Line 127 our @EXPORT = qw(%env);	Line 129 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 $ip = &get_requestor_ip();
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' => $ip,
'delflag' => $delflag,	'delflag' => $delflag,
'logentry' => $storehash,	'logentry' => $storehash,
'uname' => $uname,	'uname' => $uname,
Line 146 our @EXPORT = qw(%env);	Line 149 our @EXPORT = qw(%env);
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 158 sub logthis {	Line 161 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 171 sub logperm {	Line 174 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 184 sub create_connection {	Line 187 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 230 sub get_server_distarch {	Line 233 sub get_server_distarch {
}	}

sub get_servercerts_info {	sub get_servercerts_info {
my ($lonhost,$context) = @_;	my ($lonhost,$hostname,$context) = @_;
	return if ($lonhost eq '');
	if ($hostname eq '') {
	$hostname = &hostname($lonhost);
	}
	return if ($hostname eq '');
my ($rep,$uselocal);	my ($rep,$uselocal);
if (grep { $_ eq $lonhost } &current_machine_ids()) {	if ($context eq 'install') {
	$uselocal = 1;
	} elsif (grep { $_ eq $lonhost } &current_machine_ids()) {
$uselocal = 1;	$uselocal = 1;
}	}
if (($context ne 'cgi') && ($uselocal)) {	if (($context ne 'cgi') && ($context ne 'install') && ($uselocal)) {
my $distro = (split(/\:/,&get_server_distarch($lonhost)))[0];	my $distro = (split(/\:/,&get_server_distarch($lonhost)))[0];
if ($distro eq '') {	if ($distro eq '') {
$uselocal = 0;	$uselocal = 0;
Line 243 sub get_servercerts_info {	Line 253 sub get_servercerts_info {
if ($1 < 6) {	if ($1 < 6) {
$uselocal = 0;	$uselocal = 0;
}	}
	} elsif ($distro =~ /^(?:sles)(\d+)$/) {
	if ($1 < 12) {
	$uselocal = 0;
	}
}	}
}	}
if ($uselocal) {	if ($uselocal) {
$rep = LONCAPA::Lond::server_certs(\%perlvar);	$rep = LONCAPA::Lond::server_certs(\%perlvar,$lonhost,$hostname);
} else {	} else {
$rep=&reply('servercerts',$lonhost);	$rep=&reply('servercerts',$lonhost);
}	}
my ($result,%returnhash);	my ($result,%returnhash);
if (defined($lonhost)) {
if (!defined(&hostname($lonhost))) {
return;
}
}
if (($rep=~/^(refused\|rejected\|error)/) \|\| ($rep eq 'con_lost') \|\|	if (($rep=~/^(refused\|rejected\|error)/) \|\| ($rep eq 'con_lost') \|\|
($rep eq 'unknown_cmd')) {	($rep eq 'unknown_cmd')) {
$result = $rep;	$result = $rep;
Line 305 sub get_server_loncaparev {	Line 314 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 ($content =~ /<p>VERSION\:\s*([\w.\-]+)<\/p>/) {
Line 454 sub reply {	Line 462 sub reply {
unless (defined(&hostname($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 483 sub reconlonc {	Line 509 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) {
Line 523 sub critical {	Line 549 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 532 sub critical {	Line 558 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 648 sub transfer_profile_to_env {	Line 674 sub transfer_profile_to_env {

# ---------------------------------------------------- Check for valid session	# ---------------------------------------------------- Check for valid session
sub check_for_valid_session {	sub check_for_valid_session {
my ($r,$name,$userhashref) = @_;	my ($r,$name,$userhashref,$domref) = @_;
my %cookies=CGI::Cookie->parse($r->header_in('Cookie'));	my %cookies=CGI::Cookie->parse($r->header_in('Cookie'));
my ($linkname,$pubname);	my ($lonidsdir,$linkname,$pubname,$secure,$lonid);
if ($name eq '') {	if ($name eq 'lonDAV') {
$name = 'lonID';	$lonidsdir=$r->dir_config('lonDAVsessDir');
	} else {
	$lonidsdir=$r->dir_config('lonIDsDir');
	if ($name eq '') {
	$name = 'lonID';
	}
	}
	if ($name eq 'lonID') {
	$secure = 'lonSID';
$linkname = 'lonLinkID';	$linkname = 'lonLinkID';
$pubname = 'lonPubID';	$pubname = 'lonPubID';
}	if (exists($cookies{$secure})) {
my $lonid=$cookies{$name};	$lonid=$cookies{$secure};
if (!$lonid) {	} elsif (exists($cookies{$name})) {
if (($name eq 'lonID') && ($ENV{'SERVER_PORT'} != 443) && ($linkname)) {	$lonid=$cookies{$name};
	} elsif ((exists($cookies{$linkname})) && ($ENV{'SERVER_PORT'} != 443)) {
$lonid=$cookies{$linkname};	$lonid=$cookies{$linkname};
	} elsif (exists($cookies{$pubname})) {
	$lonid=$cookies{$pubname};
}	}
if (!$lonid) {	} else {
if (($name eq 'lonID') && ($pubname)) {	$lonid=$cookies{$name};
$lonid=$cookies{$pubname};
}
}
}	}
return undef if (!$lonid);	return undef if (!$lonid);

my $handle=&LONCAPA::clean_handle($lonid->value);	my $handle=&LONCAPA::clean_handle($lonid->value);
my $lonidsdir;	if (-l "$lonidsdir/$handle.id") {
if ($name eq 'lonDAV') {	my $link = readlink("$lonidsdir/$handle.id");
$lonidsdir=$r->dir_config('lonDAVsessDir');	if ((-e $link) && ($link =~ m{^\Q$lonidsdir\E/(.+)\.id$})) {
} else {	$handle = $1;
$lonidsdir=$r->dir_config('lonIDsDir');	}
	}
	if (!-e "$lonidsdir/$handle.id") {
	if ((ref($domref)) && ($name eq 'lonID') &&
	($handle =~ /^($match_username)\_\d+\_($match_domain)\_(.+)$/)) {
	my ($possuname,$possudom,$possuhome) = ($1,$2,$3);
	if ((&domain($possudom) ne '') && (&homeserver($possuname,$possudom) eq $possuhome)) {
	$$domref = $possudom;
	}
	}
	return undef;
}	}
return undef if (!-e "$lonidsdir/$handle.id");

my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");	my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
return undef if (!$opened);	return undef if (!$opened);
Line 690 sub check_for_valid_session {	Line 733 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 721 sub timed_flock {	Line 771 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 746 sub appenv {	Line 827 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} = $value;
	}
	untie(%disk_env);
	}
}	}
}	}
return 'ok';	return 'ok';
Line 871 sub userload {	Line 955 sub userload {
while ($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 926 sub spareserver {	Line 1011 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 999 sub find_existing_session {	Line 1084 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 updatebalcookie {
	my ($cookie,$balancer,$lastentry)=@_;
	if ($cookie =~ /^($match_domain)\_($match_username)\_[a-f0-9]{32}$/) {
	my ($udom,$uname) = ($1,$2);
	my $uprimary_id = &domain($udom,'primary');
	my $uintdom = &internet_dom($uprimary_id);
	my $intdom = &internet_dom($balancer);
	my $serverhomedom = &host_domain($balancer);
	if (($uintdom ne '') && ($uintdom eq $intdom)) {
	return &reply('updatebalcookie:'.&escape($cookie).':'.&escape($lastentry),$balancer);
	}
	}
	return;
	}

	sub delbalcookie {
	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 $intdom)) {
	return &reply('delbalcookie:'.&escape($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 1034 sub choose_server {	Line 1216 sub choose_server {
if (ref($balancers) eq 'HASH') {	if (ref($balancers) eq 'HASH') {
next if (exists($balancers->{$lonhost}));	next if (exists($balancers->{$lonhost}));
}	}
}	}
my $loginvia;	my $loginvia;
if ($checkloginvia) {	if ($checkloginvia) {
$loginvia = $domconfhash{$udom.'.login.loginvia_'.$lonhost};	$loginvia = $domconfhash{$udom.'.login.loginvia_'.$lonhost};
Line 1065 sub choose_server {	Line 1247 sub choose_server {
return ($login_host,$hostname,$portal_path,$isredirect,$lowest_load);	return ($login_host,$hostname,$portal_path,$isredirect,$lowest_load);
}	}

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

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

sub changepass {	sub changepass {
Line 1100 sub changepass {	Line 1304 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 $answer;
}	}
Line 1336 sub get_lonbalancer_config {	Line 1543 sub get_lonbalancer_config {
sub check_loadbalancing {	sub check_loadbalancing {
my ($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');
Line 1363 sub check_loadbalancing {	Line 1570 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 1424 sub check_loadbalancing {	Line 1631 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 1456 sub check_loadbalancing {	Line 1663 sub check_loadbalancing {
if ($domneedscache) {	if ($domneedscache) {
&do_cache_new('loadbalancing',$domneedscache,$is_balancer,$cachetime);	&do_cache_new('loadbalancing',$domneedscache,$is_balancer,$cachetime);
}	}
if ($is_balancer) {	if (($is_balancer) && ($caller ne 'switchserver')) {
my $lowest_load = 30000;	my $lowest_load = 30000;
if (ref($offloadto) eq 'HASH') {	if (ref($offloadto) eq 'HASH') {
if (ref($offloadto->{'primary'}) eq 'ARRAY') {	if (ref($offloadto->{'primary'}) eq 'ARRAY') {
Line 1490 sub check_loadbalancing {	Line 1697 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' => $lonhost,
'user.loadbalcheck.time' => time});	'user.loadbalcheck.time' => time});
}	}
}	}
}	}
}	}
}	}
return ($is_balancer,$otherserver);	if (($is_balancer) && (!$homeintdom)) {
	undef($setcookie);
	}
	return ($is_balancer,$otherserver,$setcookie,$offloadto,$dom_balancers);
}	}

sub check_balancer_result {	sub check_balancer_result {
my ($result,@hosts) = @_;	my ($result,@hosts) = @_;
my ($is_balancer,$currtargets,$currrules);	my ($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 1512 sub check_balancer_result {	Line 1721 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 1596 sub internet_dom_servers {	Line 1810 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 1845 sub get_dom {	Line 2154 sub get_dom {
}	}
}	}
if ($udom && $uhome && ($uhome ne 'no_host')) {	if ($udom && $uhome && ($uhome ne 'no_host')) {
my $rep=&reply("getdom:$udom:$namespace:$items",$uhome);	my $rep;
	if ($namespace =~ /^enc/) {
	$rep=&reply("encrypt:egetdom:$udom:$namespace:$items",$uhome);
	} else {
	$rep=&reply("getdom:$udom:$namespace:$items",$uhome);
	}
my %returnhash;	my %returnhash;
if ($rep eq '' \|\| $rep =~ /^error: 2 /) {	if ($rep eq '' \|\| $rep =~ /^error: 2 /) {
return %returnhash;	return %returnhash;
Line 1889 sub put_dom {	Line 2203 sub put_dom {
$items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';	$items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
}	}
$items=~s/\&$//;	$items=~s/\&$//;
return &reply("putdom:$udom:$namespace:$items",$uhome);	if ($namespace =~ /^enc/) {
	return &reply("encrypt:putdom:$udom:$namespace:$items",$uhome);
	} else {
	return &reply("putdom:$udom:$namespace:$items",$uhome);
	}
} else {	} else {
&logthis("put_dom failed - no homeserver and/or domain");	&logthis("put_dom failed - no homeserver and/or domain");
}	}
Line 1980 sub inst_directory_query {	Line 2298 sub inst_directory_query {
my $homeserver = &domain($udom,'primary');	my $homeserver = &domain($udom,'primary');
my $outcome;	my $outcome;
if ($homeserver ne '') {	if ($homeserver ne '') {
	unless ($homeserver eq $perlvar{'lonHostID'}) {
	if ($srch->{'srchby'} eq 'email') {
	my $lcrev = &get_server_loncaparev($udom,$homeserver);
	my ($major,$minor) = ($lcrev =~ /^\'?(\d+)\.(\d+)\.[\w.\-]+\'?$/);
	if (($major eq '' && $minor eq '') \|\| ($major < 2) \|\|
	(($major == 2) && ($minor < 12))) {
	return;
	}
	}
	}
my $queryid=&reply("querysend:instdirsearch:".	my $queryid=&reply("querysend:instdirsearch:".
&escape($srch->{'srchby'}).':'.	&escape($srch->{'srchby'}).':'.
&escape($srch->{'srchterm'}).':'.	&escape($srch->{'srchterm'}).':'.
&escape($srch->{'srchtype'}),$homeserver);	&escape($srch->{'srchtype'}),$homeserver);
my $host=&hostname($homeserver);	my $host=&hostname($homeserver);
if ($queryid !~/^\Q$host\E\_/) {	if ($queryid !~/^\Q$host\E\_/) {
&logthis('instituional directory search invalid queryid: '.$queryid.' for host: '.$homeserver.'in domain '.$udom);	&logthis('institutional directory search invalid queryid: '.$queryid.' for host: '.$homeserver.' in domain '.$udom);
return;	return;
}	}
my $response = &get_query_reply($queryid);	my $response = &get_query_reply($queryid);
Line 2021 sub usersearch {	Line 2349 sub usersearch {
my $query = 'usersearch';	my $query = 'usersearch';
foreach my $tryserver (keys(%libserv)) {	foreach my $tryserver (keys(%libserv)) {
if (&host_domain($tryserver) eq $dom) {	if (&host_domain($tryserver) eq $dom) {
	unless ($tryserver eq $perlvar{'lonHostID'}) {
	if ($srch->{'srchby'} eq 'email') {
	my $lcrev = &get_server_loncaparev($dom,$tryserver);
	my ($major,$minor) = ($lcrev =~ /^\'?(\d+)\.(\d+)\.[\w.\-]+\'?$/);
	next if (($major eq '' && $minor eq '') \|\| ($major < 2) \|\|
	(($major == 2) && ($minor < 12)));
	}
	}
my $host=&hostname($tryserver);	my $host=&hostname($tryserver);
my $queryid=	my $queryid=
&reply("querysend:".&escape($query).':'.	&reply("querysend:".&escape($query).':'.
Line 2260 sub get_domain_defaults {	Line 2596 sub get_domain_defaults {
'coursedefaults','usersessions',	'coursedefaults','usersessions',
'requestauthor','selfenrollment',	'requestauthor','selfenrollment',
'coursecategories','ssl','autoenroll',	'coursecategories','ssl','autoenroll',
'trust','helpsettings'],$domain);	'trust','helpsettings','wafproxy'],$domain);
my @coursetypes = ('official','unofficial','community','textbook','placement');	my @coursetypes = ('official','unofficial','community','textbook','placement');
if (ref($domconfig{'defaults'}) eq 'HASH') {	if (ref($domconfig{'defaults'}) eq 'HASH') {
$domdefaults{'lang_def'} = $domconfig{'defaults'}{'lang_def'};	$domdefaults{'lang_def'} = $domconfig{'defaults'}{'lang_def'};
Line 2269 sub get_domain_defaults {	Line 2605 sub get_domain_defaults {
$domdefaults{'timezone_def'} = $domconfig{'defaults'}{'timezone_def'};	$domdefaults{'timezone_def'} = $domconfig{'defaults'}{'timezone_def'};
$domdefaults{'datelocale_def'} = $domconfig{'defaults'}{'datelocale_def'};	$domdefaults{'datelocale_def'} = $domconfig{'defaults'}{'datelocale_def'};
$domdefaults{'portal_def'} = $domconfig{'defaults'}{'portal_def'};	$domdefaults{'portal_def'} = $domconfig{'defaults'}{'portal_def'};
	$domdefaults{'intauth_cost'} = $domconfig{'defaults'}{'intauth_cost'};
	$domdefaults{'intauth_switch'} = $domconfig{'defaults'}{'intauth_switch'};
	$domdefaults{'intauth_check'} = $domconfig{'defaults'}{'intauth_check'};
} else {	} else {
$domdefaults{'lang_def'} = &domain($domain,'lang_def');	$domdefaults{'lang_def'} = &domain($domain,'lang_def');
$domdefaults{'auth_def'} = &domain($domain,'auth_def');	$domdefaults{'auth_def'} = &domain($domain,'auth_def');
Line 2336 sub get_domain_defaults {	Line 2675 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($domconfig{'usersessions'}{'remote'}) eq 'HASH') {
Line 2379 sub get_domain_defaults {	Line 2721 sub get_domain_defaults {
if (ref($domconfig{'coursecategories'}) eq 'HASH') {	if (ref($domconfig{'coursecategories'}) eq 'HASH') {
$domdefaults{'catauth'} = 'std';	$domdefaults{'catauth'} = 'std';
$domdefaults{'catunauth'} = 'std';	$domdefaults{'catunauth'} = 'std';
if ($domconfig{'coursecategories'}{'auth'}) {	if ($domconfig{'coursecategories'}{'auth'}) {
$domdefaults{'catauth'} = $domconfig{'coursecategories'}{'auth'};	$domdefaults{'catauth'} = $domconfig{'coursecategories'}{'auth'};
}	}
if ($domconfig{'coursecategories'}{'unauth'}) {	if ($domconfig{'coursecategories'}{'unauth'}) {
Line 2414 sub get_domain_defaults {	Line 2756 sub get_domain_defaults {
$domdefaults{'adhocroles'} = $domconfig{'helpsettings'}{'adhoc'};	$domdefaults{'adhocroles'} = $domconfig{'helpsettings'}{'adhoc'};
}	}
}	}
	if (ref($domconfig{'wafproxy'}) eq 'HASH') {
	foreach my $item ('ipheader','trusted','vpnint','vpnext') {
	if ($domconfig{'wafproxy'}{$item}) {
	$domdefaults{'waf_'.$item} = $domconfig{'wafproxy'}{$item};
	}
	}
	}
&do_cache_new('domdefaults',$domain,\%domdefaults,$cachetime);	&do_cache_new('domdefaults',$domain,\%domdefaults,$cachetime);
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 2434 sub course_portal_url {	Line 2842 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 2941 sub repcopy {	Line 3372 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 2953 sub repcopy {	Line 3388 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 2967 sub repcopy {	Line 3407 sub repcopy {
}	}
}	}

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

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

# ------------------------------------------------ Get server side include body	# ------------------------------------------------ Get server side include body
sub ssi_body {	sub ssi_body {
my ($filelink,%form)=@_;	my ($filelink,%form)=@_;
Line 3016 sub absolute_url {	Line 3482 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;
Line 3034 sub ssi {	Line 3499 sub ssi {
}	}

$request->header(Cookie => $ENV{'HTTP_COOKIE'});	$request->header(Cookie => $ENV{'HTTP_COOKIE'});
my $response= $ua->request($request);	my $lonhost = $perlvar{'lonHostID'};
my $content = $response->content;	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 ($content, $response);	return ($response->content, $response);
} else {	} else {
return $content;	return $response->content;
}	}
}	}

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 3057 sub externalssi {	Line 3530 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) {
	if (unlink($fname)) {
	if ($uri!~/\.meta$/) {
	if (-e $fname.'.meta') {
	unlink($fname.'.meta');
	}
	}
	my $unsubresult = &unsubscribe($fname);
	unless ($unsubresult eq 'ok') {
	&logthis("no unsub of $fname from $homeserver, reason: $unsubresult");
	}
	$removed = 1;
	}
	}
	}
	}
	}
	}
	}
	}
	}
	return $removed;
	}

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

sub allowuploaded {	sub allowuploaded {
Line 3195 sub can_edit_resource {	Line 3739 sub can_edit_resource {
$forceedit = 1;	$forceedit = 1;
}	}
$cfile = $resurl;	$cfile = $resurl;
} elsif ($resurl =~ m{^/adm/wrapper/adm/$cdom/$cnum/\d+/exttools?$}) {	} elsif (($resurl =~ m{^/ext/}) && ($symb ne '')) {
	my ($map,$id,$res) = &decode_symb($symb);
	if ($map =~ /\.page$/) {
	$incourse = 1;
	if ($env{'form.forceedit'}) {
	$forceview = 1;
	$cfile = $map;
	} else {
	$forceedit = 1;
	$cfile = '/adm/wrapper'.$resurl;
	}
	}
	} elsif ($resurl =~ m{^/adm/wrapper/adm/$cdom/$cnum/\d+/ext\.tool$}) {
$incourse = 1;	$incourse = 1;
if ($env{'form.forceedit'}) {	if ($env{'form.forceedit'}) {
$forceview = 1;	$forceview = 1;
Line 3220 sub can_edit_resource {	Line 3776 sub can_edit_resource {
$cfile = $template;	$cfile = $template;
}	}
} elsif (($resurl =~ m{^/adm/wrapper/ext/}) && ($env{'form.folderpath'} =~ /^supplemental/)) {	} elsif (($resurl =~ m{^/adm/wrapper/ext/}) && ($env{'form.folderpath'} =~ /^supplemental/)) {
$incourse = 1;	$incourse = 1;
if ($env{'form.forceedit'}) {	if ($env{'form.forceedit'}) {
$forceview = 1;	$forceview = 1;
} else {	} else {
$forceedit = 1;	$forceedit = 1;
}	}
$cfile = $resurl;	$cfile = $resurl;
} elsif (($resurl =~ m{^/adm/wrapper/adm/$cdom/$cnum/\d+/exttools?$}) && ($env{'form.folderpath'} =~ /^supplemental/)) {	} elsif (($resurl =~ m{^/adm/wrapper/adm/$cdom/$cnum/\d+/ext\.tool$}) && ($env{'form.folderpath'} =~ /^supplemental/)) {
$incourse = 1;	$incourse = 1;
if ($env{'form.forceedit'}) {	if ($env{'form.forceedit'}) {
$forceview = 1;	$forceview = 1;
Line 3245 sub can_edit_resource {	Line 3801 sub can_edit_resource {
} else {	} else {
$cfile = $env{'form.suppurl'};	$cfile = $env{'form.suppurl'};
my $escfile = &unescape($cfile);	my $escfile = &unescape($cfile);
if ($escfile =~ m{^/adm/$cdom/$cnum/\d+/exttools?$}) {	if ($escfile =~ m{^/adm/$cdom/$cnum/\d+/ext\.tool$}) {
$cfile = '/adm/wrapper'.$escfile;	$cfile = '/adm/wrapper'.$escfile;
} else {	} else {
$escfile =~ s{^http://}{};	$escfile =~ s{^http://}{};
Line 3406 sub process_coursefile {	Line 3962 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 3464 sub store_edited_file {	Line 4020 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 3489 sub clean_filename {	Line 4045 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 3496 sub clean_filename {	Line 4055 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 3538 sub resizeImage {	Line 4098 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 3567 sub userfileupload {	Line 4130 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') && ($subdir eq 'batchupload')) \|\|
Line 3580 sub userfileupload {	Line 4151 sub userfileupload {
'_'.$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 = $env{'user.name'};
Line 3615 sub userfileupload {	Line 4186 sub userfileupload {
mkdir($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 3690 sub finishuserfileupload {	Line 4261 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 3734 sub finishuserfileupload {	Line 4305 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 3743 sub finishuserfileupload {	Line 4314 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 3982 sub embedded_dependency {	Line 4557 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 4208 sub courseacclog {	Line 5023 sub courseacclog {
if ($formitem =~ /^HWFILE(?:SIZE\|TOOBIG)/) {	if ($formitem =~ /^HWFILE(?:SIZE\|TOOBIG)/) {
$what.=':'.$formitem.'='.$env{$key};	$what.=':'.$formitem.'='.$env{$key};
} elsif ($formitem !~ /^HWFILE(?:[^.]+)$/) {	} elsif ($formitem !~ /^HWFILE(?:[^.]+)$/) {
$what.=':'.$formitem.'='.$env{$key};	if ($formitem eq 'proctorpassword') {
	$what.=':'.$formitem.'=' . '*' x length($env{$key});
	} else {
	$what.=':'.$formitem.'='.$env{$key};
	}
}	}
}	}
}	}
Line 4708 sub postannounce {	Line 5527 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 5005 sub set_first_access {	Line 5824 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 5018 sub set_first_access {	Line 5842 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 $putres;
}	}
Line 5279 sub tmpreset {	Line 6109 sub tmpreset {
if (!$domain) { $domain=$env{'user.domain'}; }	if (!$domain) { $domain=$env{'user.domain'}; }
if (!$stuname) { $stuname=$env{'user.name'}; }	if (!$stuname) { $stuname=$env{'user.name'}; }
if ($domain eq 'public' && $stuname eq 'public') {	if ($domain eq 'public' && $stuname eq 'public') {
$stuname=$ENV{'REMOTE_ADDR'};	$stuname=&get_requestor_ip();
}	}
my $path=LONCAPA::tempdir();	my $path=LONCAPA::tempdir();
my %hash;	my %hash;
Line 5316 sub tmpstore {	Line 6146 sub tmpstore {
if (!$domain) { $domain=$env{'user.domain'}; }	if (!$domain) { $domain=$env{'user.domain'}; }
if (!$stuname) { $stuname=$env{'user.name'}; }	if (!$stuname) { $stuname=$env{'user.name'}; }
if ($domain eq 'public' && $stuname eq 'public') {	if ($domain eq 'public' && $stuname eq 'public') {
$stuname=$ENV{'REMOTE_ADDR'};	$stuname=&get_requestor_ip();
}	}
my $now=time;	my $now=time;
my %hash;	my %hash;
Line 5360 sub tmprestore {	Line 6190 sub tmprestore {
if (!$domain) { $domain=$env{'user.domain'}; }	if (!$domain) { $domain=$env{'user.domain'}; }
if (!$stuname) { $stuname=$env{'user.name'}; }	if (!$stuname) { $stuname=$env{'user.name'}; }
if ($domain eq 'public' && $stuname eq 'public') {	if ($domain eq 'public' && $stuname eq 'public') {
$stuname=$ENV{'REMOTE_ADDR'};	$stuname=&get_requestor_ip();
}	}
my %returnhash;	my %returnhash;
$namespace=~s/\//\_/g;	$namespace=~s/\//\_/g;
Line 5416 sub store {	Line 6246 sub store {
}	}
if (!$home) { $home=$env{'user.home'}; }	if (!$home) { $home=$env{'user.home'}; }

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

my $namevalue='';	my $namevalue='';
Line 5452 sub cstore {	Line 6282 sub cstore {
}	}
if (!$home) { $home=$env{'user.home'}; }	if (!$home) { $home=$env{'user.home'}; }

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

my $namevalue='';	my $namevalue='';
Line 5804 sub rolesinit {	Line 6634 sub rolesinit {
}	}
}	}

@userroles{'user.author', 'user.adv'} = &set_userprivs(\%userroles,	@userroles{'user.author','user.adv','user.rar'} = &set_userprivs(\%userroles,
\%allroles, \%allgroups);	\%allroles, \%allgroups);
$env{'user.adv'} = $userroles{'user.adv'};	$env{'user.adv'} = $userroles{'user.adv'};
	$env{'user.rar'} = $userroles{'user.rar'};

return (\%userroles,\%firstaccenv,\%timerintenv);	return (\%userroles,\%firstaccenv,\%timerintenv);
}	}
Line 5930 sub set_userprivs {	Line 6761 sub set_userprivs {
my ($userroles,$allroles,$allgroups,$groups_roles) = @_;	my ($userroles,$allroles,$allgroups,$groups_roles) = @_;
my $author=0;	my $author=0;
my $adv=0;	my $adv=0;
	my $rar=0;
my %grouproles = ();	my %grouproles = ();
if (keys(%{$allgroups}) > 0) {	if (keys(%{$allgroups}) > 0) {
my @groupkeys;	my @groupkeys;
Line 5977 sub set_userprivs {	Line 6809 sub set_userprivs {
$thesepriv{$privilege}.=$restrictions;	$thesepriv{$privilege}.=$restrictions;
}	}
if ($thesepriv{'adv'} eq 'F') { $adv=1; }	if ($thesepriv{'adv'} eq 'F') { $adv=1; }
	if ($thesepriv{'rar'} eq 'F') { $rar=1; }
}	}
}	}
my $thesestr='';	my $thesestr='';
Line 5985 sub set_userprivs {	Line 6818 sub set_userprivs {
}	}
$userroles->{'user.priv.'.$role} = $thesestr;	$userroles->{'user.priv.'.$role} = $thesestr;
}	}
return ($author,$adv);	return ($author,$adv,$rar);
}	}

sub role_status {	sub role_status {
Line 6030 sub role_status {	Line 6863 sub role_status {
push(@rolecodes,$$role);	push(@rolecodes,$$role);
&standard_roleprivs(\%allroles,$$role,$tdomain,$spec,$trest,$$where);	&standard_roleprivs(\%allroles,$$role,$tdomain,$spec,$trest,$$where);
}	}
my ($author,$adv)= &set_userprivs(\%userroles,\%allroles,\%allgroups,\%groups_roles);	my ($author,$adv,$rar)= &set_userprivs(\%userroles,\%allroles,\%allgroups,
	\%groups_roles);
&appenv(\%userroles,\@rolecodes);	&appenv(\%userroles,\@rolecodes);
&log($env{'user.domain'},$env{'user.name'},$env{'user.home'},"Role ".$role);	&log($env{'user.domain'},$env{'user.name'},$env{'user.home'},"Role ".$spec);
}	}
}	}
$$tstatus = 'is';	$$tstatus = 'is';
Line 6151 sub set_adhoc_privileges {	Line 6985 sub set_adhoc_privileges {
} else {	} else {
&standard_roleprivs(\%rolehash,$role,$dcdom,$spec,$pickedcourse,$area);	&standard_roleprivs(\%rolehash,$role,$dcdom,$spec,$pickedcourse,$area);
}	}
my ($author,$adv)= &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 ".$role);	&log($env{'user.domain'},$env{'user.name'},$env{'user.home'},"Role ".$spec);
unless ($caller eq 'constructaccess' && $env{'request.course.id'}) {	unless (($caller eq 'constructaccess' && $env{'request.course.id'}) \|\|
	($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' => $sec,
Line 6307 sub currentdump {	Line 7142 sub currentdump {
#	#
my %returnhash=();	my %returnhash=();
#	#
if ($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 6442 sub putstore {	Line 7277 sub putstore {
foreach my $key (keys(%{$storehash})) {	foreach my $key (keys(%{$storehash})) {
$namevalue.=&escape($key).'='.&freeze_escape($storehash->{$key}).'&';	$namevalue.=&escape($key).'='.&freeze_escape($storehash->{$key}).'&';
}	}
$namevalue .= 'ip='.&escape($ENV{'REMOTE_ADDR'}).	my $ip = &get_requestor_ip();
	$namevalue .= 'ip='.&escape($ip).
'&host='.&escape($perlvar{'lonHostID'}).	'&host='.&escape($perlvar{'lonHostID'}).
'&version='.$esc_v.	'&version='.$esc_v.
'&by='.&escape($env{'user.name'}.':'.$env{'user.domain'});	'&by='.&escape($env{'user.name'}.':'.$env{'user.domain'});
Line 6928 sub usertools_access {	Line 7764 sub usertools_access {
community => 1,	community => 1,
textbook => 1,	textbook => 1,
placement => 1,	placement => 1,
	lti => 1,
);	);
} elsif ($context eq 'requestauthor') {	} elsif ($context eq 'requestauthor') {
%tools = (	%tools = (
Line 7124 sub is_advanced_user {	Line 7961 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 $item (@curr) {
Line 7159 sub check_can_request {	Line 8000 sub check_can_request {
}	}
}	}
}	}
unless($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 7224 sub customaccess {	Line 8065 sub customaccess {
# ------------------------------------------------- Check for a user privilege	# ------------------------------------------------- Check for a user privilege

sub allowed {	sub allowed {
my ($priv,$uri,$symb,$role,$clientip,$noblockcheck)=@_;	my ($priv,$uri,$symb,$role,$clientip,$noblockcheck,$ignorecache)=@_;
my $ver_orguri=$uri;	my $ver_orguri=$uri;
$uri=&deversion($uri);	$uri=&deversion($uri);
my $orguri=$uri;	my $orguri=$uri;
Line 7241 sub allowed {	Line 8082 sub allowed {

if (defined($env{'allowed.'.$priv})) { return $env{'allowed.'.$priv}; }	if (defined($env{'allowed.'.$priv})) { return $env{'allowed.'.$priv}; }
# Free bre access to adm and meta resources	# Free bre access to adm and meta resources
if (((($uri=~/^adm\//) && ($uri !~ m{/(?:smppg\|bulletinboard)$}))	if (((($uri=~/^adm\//) && ($uri !~ m{/(?:smppg\|bulletinboard\|viewclasslist\|aboutme\|ext\.tool)$}))
\|\| (($uri=~/\.meta$/) && ($uri!~m\|^uploaded/\|) ))	\|\| (($uri=~/\.meta$/) && ($uri!~m\|^uploaded/\|) ))
&& ($priv eq 'bre')) {	&& ($priv eq 'bre')) {
return 'F';	return 'F';
Line 7289 sub allowed {	Line 8130 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 7406 sub allowed {	Line 8250 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 7420 sub allowed {	Line 8290 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,$ignorecache);
if (@blockers > 0) {	if (@blockers > 0) {
$thisallowed = 'B';	$thisallowed = 'B';
} else {	} else {
Line 7440 sub allowed {	Line 8313 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($priv,'',$refuri,'',1);
if (@blockers > 0) {	if (@blockers > 0) {
$thisallowed = 'B';	$thisallowed = 'B';
} else {	} else {
Line 7490 sub allowed {	Line 8366 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 7506 sub allowed {	Line 8392 sub allowed {
if ($noblockcheck) {	if ($noblockcheck) {
$thisallowed.=$value;	$thisallowed.=$value;
} else {	} else {
my @blockers = &has_comm_blocking($priv,$symb,$uri);	my @blockers = &has_comm_blocking($priv,$symb,$uri,$ignorecache);
if (@blockers > 0) {	if (@blockers > 0) {
$thisallowed = 'B';	$thisallowed = 'B';
} else {	} else {
Line 7519 sub allowed {	Line 8405 sub allowed {
$checkreferer=0;	$checkreferer=0;
}	}
}	}

if ($checkreferer) {	if ($checkreferer) {
my $refuri=$env{'httpref.'.$orguri};	my $refuri=$env{'httpref.'.$orguri};
unless ($refuri) {	unless ($refuri) {
Line 7545 sub allowed {	Line 8431 sub allowed {
=~/\Q$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,'',$refuri,'',1);
if (@blockers > 0) {	if (@blockers > 0) {
$thisallowed = 'B';	$thisallowed = 'B';
} else {	} else {
Line 7634 sub allowed {	Line 8523 sub allowed {
}	}
}	}
}	}

#	#
# Rest of the restrictions depend on selected course	# Rest of the restrictions depend on selected course
#	#
Line 7713 sub allowed {	Line 8602 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 7801 sub constructaccess {	Line 8692 sub constructaccess {
#	#
# User for whom data are being temporarily cached.	# User for whom data are being temporarily cached.
my $cacheduser='';	my $cacheduser='';
	# Course for which data are being temporarily cached.
	my $cachedcid='';
# 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,$udom)=@_;
if (($uname ne '') && ($udom ne '')) {	if (($uname ne '') && ($udom ne '')) {
if (($cacheduser eq $uname.':'.$udom) &&	if (($cacheduser eq $uname.':'.$udom) &&
	($cachedcid eq $env{'request.course.id'}) &&
(abs($cachedlast-time)<5)) {	(abs($cachedlast-time)<5)) {
return;	return;
}	}
}	}
$cachedlast=time;	$cachedlast=time;
$cacheduser=$uname.':'.$udom;	$cacheduser=$uname.':'.$udom;
%cachedblockers = &get_commblock_resources($blocks);	$cachedcid=$env{'request.course.id'};
	%cachedblockers = &get_commblock_resources();
	return;
}	}

sub get_comm_blocks {	sub get_comm_blocks {
Line 7896 sub get_commblock_resources {	Line 8792 sub get_commblock_resources {
if ($mapsymb) {	if ($mapsymb) {
if (ref($navmap)) {	if (ref($navmap)) {
my $mapres = $navmap->getBySymb($mapsymb);	my $mapres = $navmap->getBySymb($mapsymb);
@to_test = $mapres->retrieveResources($mapres,undef,0,0,0,1);	if (ref($mapres)) {
foreach my $res (@to_test) {	my $first = $mapres->map_start();
my $symb = $res->symb();	my $finish = $mapres->map_finish();
next if ($symb eq $mapsymb);	my $it = $navmap->getIterator($first,$finish,undef,0,0);
if ($symb ne '') {	if (ref($it)) {
@interval=&EXT("resource.0.interval",$symb);	my $res;
if ($interval[1] eq 'map') {	while ($res = $it->next(undef,1)) {
last;	next unless (ref($res));
	my $symb = $res->symb();
	next if (($symb eq $mapsymb) \|\| ($symb eq ''));
	@interval=&EXT("resource.0.interval",$symb);
	if ($interval[1] eq 'map') {
	if ($res->answerable()) {
	push(@to_test,$res);
	last;
	}
	}
}	}
}	}
}	}
Line 7954 sub get_commblock_resources {	Line 8859 sub get_commblock_resources {
}	}

sub has_comm_blocking {	sub has_comm_blocking {
my ($priv,$symb,$uri,$blocks) = @_;	my ($priv,$symb,$uri,$ignoresymbdb,$noenccheck,$blocked,$blocks) = @_;
my @blockers;	my @blockers;
return unless ($env{'request.course.id'});	return unless ($env{'request.course.id'});
return unless ($priv eq 'bre');	return unless ($priv eq 'bre');
return if ($env{'user.priv.'.$env{'request.role'}} =~/evb\&([^\:]*)/);	return if ($env{'user.priv.'.$env{'request.role'}} =~/evb\&([^\:]*)/);
return if ($env{'request.state'} eq 'construct');	return if ($env{'request.state'} eq 'construct');
&load_all_blockers($env{'user.name'},$env{'user.domain'},$blocks);	my %blockinfo;
return unless (keys(%cachedblockers) > 0);	if (ref($blocks) eq 'HASH') {
	%blockinfo = &get_commblock_resources($blocks);
	} else {
	&load_all_blockers($env{'user.name'},$env{'user.domain'});
	%blockinfo = %cachedblockers;
	}
	return unless (keys(%blockinfo) > 0);
my (%possibles,@symbs);	my (%possibles,@symbs);
if (!$symb) {	if (!$symb) {
$symb = &symbread($uri,1,1,1,\%possibles);	$symb = &symbread($uri,1,1,1,\%possibles,$ignoresymbdb,$noenccheck);
}	}
if ($symb) {	if ($symb) {
@symbs = ($symb);	@symbs = ($symb);
Line 7975 sub has_comm_blocking {	Line 8886 sub has_comm_blocking {
foreach my $symb (@symbs) {	foreach my $symb (@symbs) {
last if ($noblock);	last if ($noblock);
my ($map,$resid,$resurl)=&decode_symb($symb);	my ($map,$resid,$resurl)=&decode_symb($symb);
foreach my $block (keys(%cachedblockers)) {	foreach my $block (keys(%blockinfo)) {
if ($block =~ /^firstaccess____(.+)$/) {	if ($block =~ /^firstaccess____(.+)$/) {
my $item = $1;	my $item = $1;
if (($item eq $map) \|\| ($item eq $symb)) {	unless ($blocked) {
$noblock = 1;	if (($item eq $map) \|\| ($item eq $symb)) {
last;	$noblock = 1;
	last;
	}
}	}
}	}
if (ref($cachedblockers{$block}) eq 'HASH') {	if (ref($blockinfo{$block}) eq 'HASH') {
if (ref($cachedblockers{$block}{'resources'}) eq 'HASH') {	if (ref($blockinfo{$block}{'resources'}) eq 'HASH') {
if ($cachedblockers{$block}{'resources'}{$symb}) {	if ($blockinfo{$block}{'resources'}{$symb}) {
unless (grep(/^\Q$block\E$/,@blockers)) {	unless (grep(/^\Q$block\E$/,@blockers)) {
push(@blockers,$block);	push(@blockers,$block);
}	}
}	}
}	}
}	if (ref($blockinfo{$block}{'maps'}) eq 'HASH') {
if (ref($cachedblockers{$block}{'maps'}) eq 'HASH') {	if ($blockinfo{$block}{'maps'}{$map}) {
if ($cachedblockers{$block}{'maps'}{$map}) {	unless (grep(/^\Q$block\E$/,@blockers)) {
unless (grep(/^\Q$block\E$/,@blockers)) {	push(@blockers,$block);
push(@blockers,$block);	}
}	}
}	}
}	}
}	}
}	}
return if ($noblock);	unless ($noblock) {
return @blockers;	return @blockers;
	}
	return;
}	}
}	}

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

#	#
Line 8250 sub fetch_enrollment_query {	Line 9252 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 8279 sub get_query_reply {	Line 9281 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 8671 sub auto_validate_class_sec {	Line 9673 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 9030 sub assignrole {	Line 10059 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,$cnum,('internal.courseowner'));
Line 9050 sub assignrole {	Line 10079 sub assignrole {
}	}
}	}
}	}
} elsif (($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 '' && $env{'user.domain'} ne '')) {
Line 9271 sub store_coowners {	Line 10304 sub store_coowners {
sub modifyuserauth {	sub modifyuserauth {
my ($udom,$uname,$umode,$upass)=@_;	my ($udom,$uname,$umode,$upass)=@_;
my $uhome=&homeserver($uname,$udom);	my $uhome=&homeserver($uname,$udom);
unless (&allowed('mau',$udom)) { return 'refused'; }	my $allowed;
	if (&allowed('mau',$udom)) {
	$allowed = 1;
	} elsif (($umode eq 'internal') && ($udom eq $env{'user.domain'}) &&
	($env{'request.course.id'}) && (&allowed('mip',$env{'request.course.id'})) &&
	(!$env{'course.'.$env{'request.course.id'}.'.internal.nopasswdchg'})) {
	my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
	my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
	if (($cdom ne '') && ($cnum ne '')) {
	my $is_owner = &is_course_owner($cdom,$cnum);
	if ($is_owner) {
	$allowed = 1;
	}
	}
	}
	unless ($allowed) { return 'refused'; }
&logthis('Call to modify user authentication '.$udom.', '.$uname.', '.	&logthis('Call to modify user authentication '.$udom.', '.$uname.', '.
$umode.' by '.$env{'user.name'}.' at '.$env{'user.domain'}.	$umode.' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
' in domain '.$env{'request.role.domain'});	' in domain '.$env{'request.role.domain'});
my $reply=&reply('encrypt:changeuserauth:'.$udom.':'.$uname.':'.$umode.':'.	my $reply=&reply('encrypt:changeuserauth:'.$udom.':'.$uname.':'.$umode.':'.
&escape($upass),$uhome);	&escape($upass),$uhome);
	my $ip = &get_requestor_ip();
&log($env{'user.domain'},$env{'user.name'},$env{'user.home'},	&log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
'Authentication changed for '.$udom.', '.$uname.', '.$umode.	'Authentication changed for '.$udom.', '.$uname.', '.$umode.
'(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);	'(Remote '.$ip.'): '.$reply);
&log($udom,,$uname,$uhome,	&log($udom,,$uname,$uhome,
'Authentication changed by '.$env{'user.domain'}.', '.	'Authentication changed by '.$env{'user.domain'}.', '.
$env{'user.name'}.', '.$umode.	$env{'user.name'}.', '.$umode.
'(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);	'(Remote '.$ip.'): '.$reply);
unless ($reply eq 'ok') {	unless ($reply eq 'ok') {
&logthis('Authentication mode error: '.$reply);	&logthis('Authentication mode error: '.$reply);
return 'error: '.$reply;	return 'error: '.$reply;
Line 9317 sub modifyuser {	Line 10366 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 9608 sub writecoursepref {	Line 10661 sub writecoursepref {

sub createcourse {	sub createcourse {
my ($udom,$description,$url,$course_server,$nonstandard,$inst_code,	my ($udom,$description,$url,$course_server,$nonstandard,$inst_code,
$course_owner,$crstype,$cnum,$context,$category)=@_;	$course_owner,$crstype,$cnum,$context,$category,$callercontext)=@_;
$url=&declutter($url);	$url=&declutter($url);
my $cid='';	my $cid='';
if ($context eq 'requestcourses') {	if ($context eq 'requestcourses') {
my $can_create = 0;	my $can_create = 0;
my ($ownername,$ownerdom) = split(':',$course_owner);	my ($ownername,$ownerdom) = split(':',$course_owner);
if ($udom eq $ownerdom) {	if ($udom eq $ownerdom) {
if (&usertools_access($ownername,$ownerdom,$category,undef,	my $reload;
	if (($callercontext eq 'auto') &&
	($ownerdom eq $env{'user.domain'}) && ($ownername eq $env{'user.name'})) {
	$reload = 'reload';
	}
	if (&usertools_access($ownername,$ownerdom,$category,$reload,
$context)) {	$context)) {
$can_create = 1;	$can_create = 1;
}	}
Line 9765 sub is_course {	Line 10823 sub is_course {
my ($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 9787 sub store_userdata {	Line 10858 sub store_userdata {
if (($uhome eq '') \|\| ($uhome eq 'no_host')) {	if (($uhome eq '') \|\| ($uhome eq 'no_host')) {
$result = 'error: no_host';	$result = 'error: no_host';
} else {	} else {
$storehash->{'ip'} = $ENV{'REMOTE_ADDR'};	$storehash->{'ip'} = &get_requestor_ip();
$storehash->{'host'} = $perlvar{'lonHostID'};	$storehash->{'host'} = $perlvar{'lonHostID'};

my $namevalue='';	my $namevalue='';
Line 9906 sub save_selected_files {	Line 10977 sub save_selected_files {
my ($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 9920 sub save_selected_files {	Line 10991 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().$filename);
print (OUT undef);	print (OUT undef);
close (OUT);	close (OUT);
return ("ok");	return ("ok");
Line 9930 sub files_in_path {	Line 11001 sub files_in_path {
my ($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 9952 sub files_not_in_path {	Line 11023 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 10937 sub resdata {	Line 12008 sub resdata {
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',[$name],$cdom);
	if (ref($encdomconfig{$name}) eq 'HASH') {
	foreach my $id (keys(%lti)) {
	if (ref($encdomconfig{$name}{$id}) eq 'HASH') {
	foreach my $item ('key','secret') {
	$lti{$id}{$item} = $encdomconfig{$name}{$id}{$item};
	}
	}
	}
	}
}	}
my $cachetime = 246060;	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 10966 sub get_numsuppfiles {	Line 12054 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 11259 sub EXT {	Line 12348 sub EXT {
} else {	} else {
$filename=$env{'request.filename'};	$filename=$env{'request.filename'};
}	}
my $metadata=&metadata($filename,$what);	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_'.$what);	$metadata=&metadata($filename,'parameter_'.$what,$toolsymb);
if (defined($metadata)) { return &get_reply([$metadata,'resource']); }	if (defined($metadata)) { return &get_reply([$metadata,'resource']); }

# ----------------------------------------------- fifth, look in rest of course	# ----------------------------------------------- fifth, look in rest of course
Line 11287 sub EXT {	Line 12380 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 11312 sub EXT {	Line 12405 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 11381 sub sort_course_groups { # Sort groups b	Line 12478 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 11452 sub add_prefix_and_part {	Line 12549 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 '') \|\|
(($uri =~ m\|^/*adm/\|) &&	(($uri =~ m\|^/*adm/\|) &&
($uri !~ m\|^adm/includes\|) && ($uri !~ m{/(smppg\|bulletinboard\|exttools?)$})) \|\|	($uri !~ m\|^adm/includes\|) && ($uri !~ m{/(smppg\|bulletinboard\|ext\.tool)$})) \|\|
($uri =~ m\|/$\|) \|\| ($uri =~ m\|/.meta$\|) \|\| ($uri =~ m{^/*uploaded/.+\.sequence$})) {	($uri =~ m\|/$\|) \|\| ($uri =~ m\|/.meta$\|) \|\| ($uri =~ m{^/*uploaded/.+\.sequence$})) {
return undef;	return undef;
}	}
Line 11477 sub metadata {	Line 12575 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 11576 sub metadata {	Line 12735 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 11607 sub metadata {	Line 12816 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 11691 sub metadata {	Line 12914 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 11705 sub metadata {	Line 12928 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 11983 sub symbverify {	Line 13237 sub symbverify {

if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',	if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
&GDBM_READER(),0640)) {	&GDBM_READER(),0640)) {
my $noclutter;
if (($thisurl =~ m{^/adm/wrapper/ext/}) \|\| ($thisurl =~ m{^ext/})) {	if (($thisurl =~ m{^/adm/wrapper/ext/}) \|\| ($thisurl =~ m{^ext/})) {
$thisurl =~ s/\?.+$//;	$thisurl =~ s/\?.+$//;
if ($map =~ m{^uploaded/.+\.page$}) {	if ($map =~ m{^uploaded/.+\.page$}) {
$thisurl =~ s{^(/adm/wrapper\|)/ext/}{http://};	$thisurl =~ s{^(/adm/wrapper\|)/ext/}{http://};
$thisurl =~ s{^\Qhttp://https://\E}{https://};	$thisurl =~ s{^\Qhttp://https://\E}{https://};
$noclutter = 1;
}	}
}	}
my $ids;	my $ids;
if ($noclutter) {	if ($map =~ m{^uploaded/.+\.page$}) {
$ids=$bighash{'ids_'.$thisurl};	$ids=$bighash{'ids_'.&clutter_with_no_wrapper($thisurl)};
} else {	} else {
$ids=$bighash{'ids_'.&clutter($thisurl)};	$ids=$bighash{'ids_'.&clutter($thisurl)};
}	}
Line 12094 sub deversion {	Line 13346 sub deversion {
# ------------------------------------------------------ Return symb list entry	# ------------------------------------------------------ Return symb list entry

sub symbread {	sub symbread {
my ($thisfn,$donotrecurse,$ignorecachednull,$checkforblock,$possibles)=@_;	my ($thisfn,$donotrecurse,$ignorecachednull,$checkforblock,$possibles,
	$ignoresymbdb,$noenccheck)=@_;
my $cache_str='request.symbread.cached.'.$thisfn;	my $cache_str='request.symbread.cached.'.$thisfn;
if (defined($env{$cache_str})) {	if (defined($env{$cache_str})) {
if ($ignorecachednull) {	unless (ref($possibles) eq 'HASH') {
return $env{$cache_str} unless ($env{$cache_str} eq '');	if ($ignorecachednull) {
} else {	return $env{$cache_str} unless ($env{$cache_str} eq '');
return $env{$cache_str};	} else {
	return $env{$cache_str};
	}
}	}
}	}
# no filename provided? try from environment	# no filename provided? try from environment
unless ($thisfn) {	unless ($thisfn) {
if ($env{'request.symb'}) {	if ($env{'request.symb'}) {
return $env{$cache_str}=&symbclean($env{'request.symb'});	return $env{$cache_str}=&symbclean($env{'request.symb'});
}	}
$thisfn=$env{'request.filename'};	$thisfn=$env{'request.filename'};
}	}
Line 12129 sub symbread {	Line 13384 sub symbread {
if ($targetfn =~ m\|^adm/wrapper/(ext/.*)\|) {	if ($targetfn =~ m\|^adm/wrapper/(ext/.*)\|) {
$targetfn=$1;	$targetfn=$1;
}	}
if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',	unless ($ignoresymbdb) {
&GDBM_READER(),0640)) {	if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
$syval=$hash{$targetfn};	&GDBM_READER(),0640)) {
untie(%hash);	$syval=$hash{$targetfn};
	untie(%hash);
	}
	if ($syval && $checkforblock) {
	my @blockers = &has_comm_blocking('bre',$syval,$thisfn,$ignoresymbdb,$noenccheck);
	if (@blockers) {
	$syval='';
	}
	}
}	}
# ---------------------------------------------------------- There was an entry	# ---------------------------------------------------------- There was an entry
if ($syval) {	if ($syval) {
Line 12165 sub symbread {	Line 13428 sub symbread {
$syval=&encode_symb($bighash{'map_id_'.$mapid},	$syval=&encode_symb($bighash{'map_id_'.$mapid},
$resid,$thisfn);	$resid,$thisfn);
if (ref($possibles) eq 'HASH') {	if (ref($possibles) eq 'HASH') {
$possibles->{$syval} = 1;	unless ($bighash{'randomout_'.$ids} \|\| $env{'request.role.adv'}) {
	$possibles->{$syval} = 1;
	}
}	}
if ($checkforblock) {	if ($checkforblock) {
my @blockers = &has_comm_blocking('bre',$syval,$bighash{'src_'.$ids});	unless ($bighash{'randomout_'.$ids} \|\| $env{'request.role.adv'}) {
if (@blockers) {	my @blockers = &has_comm_blocking('bre',$syval,$bighash{'src_'.$ids},'',$noenccheck);
$syval = '';	if (@blockers) {
return;	$syval = '';
	untie(%bighash);
	return $env{$cache_str}='';
	}
}	}
}	}
} elsif ((!$donotrecurse) \|\| ($checkforblock) \|\| (ref($possibles) eq 'HASH')) {	} elsif ((!$donotrecurse) \|\| ($checkforblock) \|\| (ref($possibles) eq 'HASH')) {
Line 12190 sub symbread {	Line 13458 sub symbread {
if ($bighash{'map_type_'.$mapid} ne 'page') {	if ($bighash{'map_type_'.$mapid} ne 'page') {
my $poss_syval=&encode_symb($bighash{'map_id_'.$mapid},	my $poss_syval=&encode_symb($bighash{'map_id_'.$mapid},
$resid,$thisfn);	$resid,$thisfn);
if (ref($possibles) eq 'HASH') {	next if ($bighash{'randomout_'.$id} && !$env{'request.role.adv'});
$possibles->{$syval} = 1;	next unless (($noenccheck) \|\| ($bighash{'encrypted_'.$id} eq $env{'request.enc'}));
}
if ($checkforblock) {	if ($checkforblock) {
my @blockers = &has_comm_blocking('bre',$poss_syval,$file);	my @blockers = &has_comm_blocking('bre',$poss_syval,$file,'',$noenccheck);
unless (@blockers > 0) {	if (@blockers > 0) {
	$syval = '';
	} else {
$syval = $poss_syval;	$syval = $poss_syval;
$realpossible++;	$realpossible++;
}	}
Line 12203 sub symbread {	Line 13472 sub symbread {
$syval = $poss_syval;	$syval = $poss_syval;
$realpossible++;	$realpossible++;
}	}
	if ($syval) {
	if (ref($possibles) eq 'HASH') {
	$possibles->{$syval} = 1;
	}
	}
}	}
}	}
}	}
Line 12734 sub repcopy_userfile {	Line 14008 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 12767 sub tokenwrapper {	Line 14041 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='.$perlvar{'lonHostID'};
} else {	} else {
Line 12785 sub getuploaded {	Line 14060 sub getuploaded {
my ($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 12807 sub readfile {	Line 14082 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 12920 sub machine_ids {	Line 14195 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 12941 sub default_login_domain {	Line 14216 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;
	}

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

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

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

	sub get_proxy_alias {
	my $lonhost = $perlvar{'lonHostID'};
	if ($lonhost ne '') {
	my ($alias,$cached) = &is_cached_new('proxyalias',$lonhost);
	if ($cached) {
	return $alias;
	}
	my $dom = &Apache::lonnet::host_domain($lonhost);
	if ($dom ne '') {
	my $cachetime = 606024;
	my %domconfig =
	&Apache::lonnet::get_dom('configuration',['wafproxy'],$dom);
	my $alias;
	if (ref($domconfig{'wafproxy'}) eq 'HASH') {
	if (ref($domconfig{'wafproxy'}{'alias'}) eq 'HASH') {
	$alias = $domconfig{'wafproxy'}{'alias'}{$lonhost};
	}
	}
	return &do_cache_new('proxyalias',$lonhost,$alias,$cachetime);
	}
	}
	return;
	}

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

sub declutter {	sub declutter {
Line 12991 sub clutter {	Line 14420 sub clutter {
# &logthis("Got a blank emb style");	# &logthis("Got a blank emb style");
}	}
}	}
} elsif ($thisfn =~ m{^/adm/$match_domain/$match_courseid/\d+/exttools?$}) {	} elsif ($thisfn =~ m{^/adm/$match_domain/$match_courseid/\d+/ext\.tool$}) {
$thisfn='/adm/wrapper'.$thisfn;	$thisfn='/adm/wrapper'.$thisfn;
}	}
return $thisfn;	return $thisfn;
Line 13066 sub get_dns {	Line 14495 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",$response->content);
&$func(\@content,$hashref);	unless ($nocache) {
return;	&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,$hashref);
	}
}	}
close($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 13156 sub fetch_dns_checksums {	Line 14599 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 $loaded;
Line 13187 sub fetch_dns_checksums {	Line 14703 sub fetch_dns_checksums {
my ($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 = <$fh>;
&parse_domain_tab(\@lines);	&parse_domain_tab(\@lines);
}	}
Line 13239 sub fetch_dns_checksums {	Line 14755 sub fetch_dns_checksums {
my ($id,$domain,$role,$name,$protocol,$intdom)=split(/:/,$configline);	my ($id,$domain,$role,$name,$protocol,$intdom)=split(/:/,$configline);
$name=~s/\s//g;	$name=~s/\s//g;
if ($id && $domain && $role && $name) {	if ($id && $domain && $role && $name) {
	if ((exists($hostname{$id})) && ($hostname{$id} ne '')) {
	my $curr = $hostname{$id};
	my $skip;
	if (ref($name_to_host{$curr}) eq 'ARRAY') {
	if (($curr eq $name) && (@{$name_to_host{$curr}} == 1)) {
	$skip = 1;
	} else {
	@{$name_to_host{$curr}} = grep { $_ ne $id } @{$name_to_host{$curr}};
	}
	}
	unless ($skip) {
	push(@{$name_to_host{$name}},$id);
	}
	} else {
	push(@{$name_to_host{$name}},$id);
	}
$hostname{$id}=$name;	$hostname{$id}=$name;
push(@{$name_to_host{$name}}, $id);
$hostdom{$id}=$domain;	$hostdom{$id}=$domain;
if ($role eq 'library') { $libserv{$id}=$name; }	if ($role eq 'library') { $libserv{$id}=$name; }
if (defined($protocol)) {	if (defined($protocol)) {
Line 13263 sub fetch_dns_checksums {	Line 14794 sub fetch_dns_checksums {
&purge_remembered();	&purge_remembered();
&reset_domain_info();	&reset_domain_info();
&reset_hosts_ip_info();	&reset_hosts_ip_info();
	undef(%internetdom);
undef(%name_to_host);	undef(%name_to_host);
undef(%hostname);	undef(%hostname);
undef(%hostdom);	undef(%hostdom);
Line 13273 sub fetch_dns_checksums {	Line 14805 sub fetch_dns_checksums {
sub load_hosts_tab {	sub load_hosts_tab {
my ($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 13305 sub fetch_dns_checksums {	Line 14837 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 13539 sub all_loncaparevs {	Line 15076 sub all_loncaparevs {
{	{
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 13555 sub all_loncaparevs {	Line 15092 sub all_loncaparevs {
{	{
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 13580 BEGIN {	Line 15117 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 13594 BEGIN {	Line 15131 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 13608 BEGIN {	Line 15145 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 13628 BEGIN {	Line 15165 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/ \|\| $configline=~/^#/) { next; }
Line 13682 BEGIN {	Line 15219 BEGIN {
# ---------------------------------------------------------- Read managers table	# ---------------------------------------------------------- Read managers table
{	{
if (-e "$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 13701 BEGIN {	Line 15238 BEGIN {

}	}

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

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

$memcache=new Cache::Memcached({'servers' => ['127.0.0.1:11211'],	$memcache=new Cache::Memcached({'servers' => ['127.0.0.1:11211'],
'compress_threshold'=> 20_000,	'compress_threshold'=> 20_000,
});	});
Line 14040 prevents recursive calls to &allowed.	Line 15587 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 14370 Returns:	Line 15918 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 14421 condval($condidx) : value of condition i	Line 16051 condval($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 15061 userspace, probably shouldn't be called	Line 16697 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

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

Removed from v.1.1338
changed lines
	Added in v.1.1438