loncom/lond - diff

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Diff for /loncom/lond between versions 1.409 and 1.507

version 1.409, 2008/10/07 10:08:06	version 1.507, 2014/04/07 23:37:57
Line 15	Line 15
#	#
# LON-CAPA is distributed in the hope that it will be useful,	# LON-CAPA is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of	# but WITHOUT ANY WARRANTY; without even the implied warranty of

# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the	# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.	# GNU General Public License for more details.
#	#
Line 33 use strict;	Line 34 use strict;
use lib '/home/httpd/lib/perl/';	use lib '/home/httpd/lib/perl/';
use LONCAPA;	use LONCAPA;
use LONCAPA::Configuration;	use LONCAPA::Configuration;
	use LONCAPA::Lond;

use IO::Socket;	use IO::Socket;
use IO::File;	use IO::File;
Line 42 use Crypt::IDEA;	Line 44 use Crypt::IDEA;
use LWP::UserAgent();	use LWP::UserAgent();
use Digest::MD5 qw(md5_hex);	use Digest::MD5 qw(md5_hex);
use GDBM_File;	use GDBM_File;
use Authen::Krb4;
use Authen::Krb5;	use Authen::Krb5;
use localauth;	use localauth;
use localenroll;	use localenroll;
Line 53 use LONCAPA::lonlocal;	Line 54 use LONCAPA::lonlocal;
use LONCAPA::lonssl;	use LONCAPA::lonssl;
use Fcntl qw(:flock);	use Fcntl qw(:flock);
use Apache::lonnet;	use Apache::lonnet;
	use Mail::Send;

my $DEBUG = 0; # Non zero to enable debug log entries.	my $DEBUG = 0; # Non zero to enable debug log entries.

Line 67 my $currentdomainid;	Line 69 my $currentdomainid;
my $client;	my $client;
my $clientip; # IP address of client.	my $clientip; # IP address of client.
my $clientname; # LonCAPA name of client.	my $clientname; # LonCAPA name of client.
	my $clientversion; # LonCAPA version running on client.
	my $clienthomedom; # LonCAPA domain of homeID for client.
	# primary library server.

my $server;	my $server;

Line 88 my %managers; # Ip -> manager names	Line 93 my %managers; # Ip -> manager names

my %perlvar; # Will have the apache conf defined perl vars.	my %perlvar; # Will have the apache conf defined perl vars.

	my $dist;

#	#
# The hash below is used for command dispatching, and is therefore keyed on the request keyword.	# The hash below is used for command dispatching, and is therefore keyed on the request keyword.
# Each element of the hash contains a reference to an array that contains:	# Each element of the hash contains a reference to an array that contains:
Line 123 my @passwderrors = ("ok",	Line 130 my @passwderrors = ("ok",
"pwchange_failure - lcpasswd Error filename is invalid");	"pwchange_failure - lcpasswd Error filename is invalid");


# The array below are lcuseradd error strings.:	# This array are the errors from lcinstallfile:

my $lastadderror = 13;
my @adderrors = ("ok",
"User ID mismatch, lcuseradd must run as user www",
"lcuseradd Incorrect number of command line parameters must be 3",
"lcuseradd Incorrect number of stdinput lines, must be 3",
"lcuseradd Too many other simultaneous pwd changes in progress",
"lcuseradd User does not exist",
"lcuseradd Unable to make www member of users's group",
"lcuseradd Unable to su to root",
"lcuseradd Unable to set password",
"lcuseradd Username has invalid characters",
"lcuseradd Password has an invalid character",
"lcuseradd User already exists",
"lcuseradd Could not add user.",
"lcuseradd Password mismatch");


	my @installerrors = ("ok",
	"Initial user id of client not that of www",
	"Usage error, not enough command line arguments",
	"Source filename does not exist",
	"Destination filename does not exist",
	"Some file operation failed",
	"Invalid table filename."
	);

#	#
# Statistics that are maintained and dislayed in the status line.	# Statistics that are maintained and dislayed in the status line.
Line 398 sub isClient {	Line 396 sub isClient {
#	#
sub ReadManagerTable {	sub ReadManagerTable {

	&Debug("Reading manager table");
# Clean out the old table first..	# Clean out the old table first..

foreach my $key (keys %managers) {	foreach my $key (keys %managers) {
Line 406 sub ReadManagerTable {	Line 405 sub ReadManagerTable {

my $tablename = $perlvar{'lonTabDir'}."/managers.tab";	my $tablename = $perlvar{'lonTabDir'}."/managers.tab";
if (!open (MANAGERS, $tablename)) {	if (!open (MANAGERS, $tablename)) {
logthis('<font color="red">No manager table. Nobody can manage!!</font>');	my $hostname = &Apache::lonnet::hostname($perlvar{'lonHostID'});
return;	if (&Apache::lonnet::is_LC_dns($hostname)) {
	&logthis('<font color="red">No manager table. Nobody can manage!!</font>');
	}
	return;
}	}
while(my $host = <MANAGERS>) {	while(my $host = <MANAGERS>) {
chomp($host);	chomp($host);
Line 432 sub ReadManagerTable {	Line 434 sub ReadManagerTable {
}	}
} else {	} else {
logthis('<font color="green"> existing host'." $host</font>\n");	logthis('<font color="green"> existing host'." $host</font>\n");
$managers{&Apache::lonnet::get_host_ip($host)} = $host; # Use info from cluster tab if clumemeber	$managers{&Apache::lonnet::get_host_ip($host)} = $host; # Use info from cluster tab if cluster memeber
}	}
}	}
}	}
Line 494 sub AdjustHostContents {	Line 496 sub AdjustHostContents {
my $me = $perlvar{'lonHostID'};	my $me = $perlvar{'lonHostID'};

foreach my $line (split(/\n/,$contents)) {	foreach my $line (split(/\n/,$contents)) {
if(!(($line eq "") \|\| ($line =~ /^ \#/) \|\| ($line =~ /^ $/))) {	if(!(($line eq "") \|\| ($line =~ /^ \#/) \|\| ($line =~ /^ $/) \|\|
	($line =~ /^\s*\^/))) {
chomp($line);	chomp($line);
my ($id,$domain,$role,$name,$ip,$maxcon,$idleto,$mincon)=split(/:/,$line);	my ($id,$domain,$role,$name,$ip,$maxcon,$idleto,$mincon)=split(/:/,$line);
if ($id eq $me) {	if ($id eq $me) {
Line 520 sub AdjustHostContents {	Line 523 sub AdjustHostContents {
}	}
#	#
# InstallFile: Called to install an administrative file:	# InstallFile: Called to install an administrative file:
# - The file is created with <name>.tmp	# - The file is created int a temp directory called <name>.tmp
# - The <name>.tmp file is then mv'd to <name>	# - lcinstall file is called to install the file.
# This lugubrious procedure is done to ensure that we are never without	# since the web app has no direct write access to the table directory
# a valid, even if dated, version of the file regardless of who crashes
# and when the crash occurs.
#	#
# Parameters:	# Parameters:
# Name of the file	# Name of the file
Line 532 sub AdjustHostContents {	Line 533 sub AdjustHostContents {
# Return:	# Return:
# nonzero - success.	# nonzero - success.
# 0 - failure and $! has an errno.	# 0 - failure and $! has an errno.
	# Assumptions:
	# File installtion is a relatively infrequent
#	#
sub InstallFile {	sub InstallFile {

my ($Filename, $Contents) = @_;	my ($Filename, $Contents) = @_;
my $TempFile = $Filename.".tmp";	# my $TempFile = $Filename.".tmp";
	my $exedir = $perlvar{'lonDaemons'};
	my $tmpdir = $exedir.'/tmp/';
	my $TempFile = $tmpdir."TempTableFile.tmp";

# Open the file for write:	# Open the file for write:

Line 550 sub InstallFile {	Line 556 sub InstallFile {
print $fh ($Contents);	print $fh ($Contents);
$fh->close; # In case we ever have a filesystem w. locking	$fh->close; # In case we ever have a filesystem w. locking

chmod(0660, $TempFile);	chmod(0664, $TempFile); # Everyone can write it.

# Now we can move install the file in position.	# Use lcinstall file to put the file in the table directory...

move($TempFile, $Filename);	&Debug("Opening pipe to $exedir/lcinstallfile $TempFile $Filename");
	my $pf = IO::File->new("\| $exedir/lcinstallfile $TempFile $Filename > $exedir/logs/lcinstallfile.log");
	close $pf;
	my $err = $?;
	&Debug("Status is $err");
	if ($err != 0) {
	my $msg = $err;
	if ($err < @installerrors) {
	$msg = $installerrors[$err];
	}
	&logthis("Install failed for table file $Filename : $msg");
	return 0;
	}

	# Remove the temp file:

	unlink($TempFile);

return 1;	return 1;
}	}
Line 562 sub InstallFile {	Line 584 sub InstallFile {

#	#
# ConfigFileFromSelector: converts a configuration file selector	# ConfigFileFromSelector: converts a configuration file selector
# (one of host or domain at this point) into a	# into a configuration file pathname.
# configuration file pathname.	# Supports the following file selectors:
	# hosts, domain, dns_hosts, dns_domain
	#
#	#
# Parameters:	# Parameters:
# selector - Configuration file selector.	# selector - Configuration file selector.
Line 575 sub ConfigFileFromSelector {	Line 599 sub ConfigFileFromSelector {
my $tablefile;	my $tablefile;

my $tabledir = $perlvar{'lonTabDir'}.'/';	my $tabledir = $perlvar{'lonTabDir'}.'/';
if ($selector eq "hosts") {	if (($selector eq "hosts") \|\| ($selector eq "domain") \|\|
$tablefile = $tabledir."hosts.tab";	($selector eq "dns_hosts") \|\| ($selector eq "dns_domain")) {
} elsif ($selector eq "domain") {	$tablefile = $tabledir.$selector.'.tab';
$tablefile = $tabledir."domain.tab";
} else {
return undef;
}	}
return $tablefile;	return $tablefile;

}	}
#	#
# PushFile: Called to do an administrative push of a file.	# PushFile: Called to do an administrative push of a file.
Line 603 sub ConfigFileFromSelector {	Line 623 sub ConfigFileFromSelector {
sub PushFile {	sub PushFile {
my $request = shift;	my $request = shift;
my ($command, $filename, $contents) = split(":", $request, 3);	my ($command, $filename, $contents) = split(":", $request, 3);
	&Debug("PushFile");

# At this point in time, pushes for only the following tables are	# At this point in time, pushes for only the following tables are
# supported:	# supported:
# hosts.tab ($filename eq host).	# hosts.tab ($filename eq host).
# domain.tab ($filename eq domain).	# domain.tab ($filename eq domain).
	# dns_hosts.tab ($filename eq dns_host).
	# dns_domain.tab ($filename eq dns_domain).
# Construct the destination filename or reject the request.	# Construct the destination filename or reject the request.
#	#
# lonManage is supposed to ensure this, however this session could be	# lonManage is supposed to ensure this, however this session could be
Line 619 sub PushFile {	Line 642 sub PushFile {
if(! (defined $tablefile)) {	if(! (defined $tablefile)) {
return "refused";	return "refused";
}	}
#
# >copy< the old table to the backup table
# don't rename in case system crashes/reboots etc. in the time
# window between a rename and write.
#
my $backupfile = $tablefile;
$backupfile =~ s/\.tab$/.old/;
if(!CopyFile($tablefile, $backupfile)) {
&logthis('<font color="green"> CopyFile from '.$tablefile." to ".$backupfile." failed </font>");
return "error:$!";
}
&logthis('<font color="green"> Pushfile: backed up '
.$tablefile." to $backupfile</font>");

# If the file being pushed is the host file, we adjust the entry for ourself so that the	# If the file being pushed is the host file, we adjust the entry for ourself so that the
# IP will be our current IP as looked up in dns. Note this is only 99% good as it's possible	# IP will be our current IP as looked up in dns. Note this is only 99% good as it's possible
# to conceive of conditions where we don't have a DNS entry locally. This is possible in a	# to conceive of conditions where we don't have a DNS entry locally. This is possible in a
Line 645 sub PushFile {	Line 655 sub PushFile {

# Install the new file:	# Install the new file:

	&logthis("Installing new $tablefile contents:\n$contents");
if(!InstallFile($tablefile, $contents)) {	if(!InstallFile($tablefile, $contents)) {
&logthis('<font color="red"> Pushfile: unable to install '	&logthis('<font color="red"> Pushfile: unable to install '
.$tablefile." $! </font>");	.$tablefile." $! </font>");
return "error:$!";	return "error:$!";
} else {	} else {
&logthis('<font color="green"> Installed new '.$tablefile	&logthis('<font color="green"> Installed new '.$tablefile
."</font>");	." - transaction by: $clientname ($clientip)</font>");
	my $adminmail = $perlvar{'lonAdmEMail'};
	my $admindom = &Apache::lonnet::host_domain($perlvar{'lonHostID'});
	if ($admindom ne '') {
	my %domconfig =
	&Apache::lonnet::get_dom('configuration',['contacts'],$admindom);
	if (ref($domconfig{'contacts'}) eq 'HASH') {
	if ($domconfig{'contacts'}{'adminemail'} ne '') {
	$adminmail = $domconfig{'contacts'}{'adminemail'};
	}
	}
	}
	if ($adminmail =~ /^[^\@]+\@[^\@]+$/) {
	my $msg = new Mail::Send;
	$msg->to($adminmail);
	$msg->subject('LON-CAPA DNS update on '.$perlvar{'lonHostID'});
	$msg->add('Content-type','text/plain; charset=UTF-8');
	if (my $fh = $msg->open()) {
	print $fh 'Update to '.$tablefile.' from Cluster Manager '.
	"$clientname ($clientip)\n";
	$fh->close;
	}
	}
}	}


# Indicate success:	# Indicate success:

return "ok";	return "ok";
Line 951 sub read_profile {	Line 982 sub read_profile {
&GDBM_READER());	&GDBM_READER());
if ($hashref) {	if ($hashref) {
my @queries=split(/\&/,$what);	my @queries=split(/\&/,$what);
	if ($namespace eq 'roles') {
	@queries = map { &unescape($_); } @queries;
	}
my $qresult='';	my $qresult='';

for (my $i=0;$i<=$#queries;$i++) {	for (my $i=0;$i<=$#queries;$i++) {
Line 1044 sub pong_handler {	Line 1078 sub pong_handler {
# Implicit Inputs:	# Implicit Inputs:
# $currenthostid - Global variable that carries the name of the host	# $currenthostid - Global variable that carries the name of the host
# known as.	# known as.
# $clientname - Global variable that carries the name of the hsot we're connected to.	# $clientname - Global variable that carries the name of the host we're connected to.
# Returns:	# Returns:
# 1 - Ok to continue processing.	# 1 - Ok to continue processing.
# 0 - Program should exit.	# 0 - Program should exit.
Line 1083 sub establish_key_handler {	Line 1117 sub establish_key_handler {
# Implicit Inputs:	# Implicit Inputs:
# $currenthostid - Global variable that carries the name of the host	# $currenthostid - Global variable that carries the name of the host
# known as.	# known as.
# $clientname - Global variable that carries the name of the hsot we're connected to.	# $clientname - Global variable that carries the name of the host we're connected to.
# Returns:	# Returns:
# 1 - Ok to continue processing.	# 1 - Ok to continue processing.
# 0 - Program should exit.	# 0 - Program should exit.
Line 1092 sub establish_key_handler {	Line 1126 sub establish_key_handler {
sub load_handler {	sub load_handler {
my ($cmd, $tail, $replyfd) = @_;	my ($cmd, $tail, $replyfd) = @_;



# Get the load average from /proc/loadavg and calculate it as a percentage of	# Get the load average from /proc/loadavg and calculate it as a percentage of
# the allowed load limit as set by the perl global variable lonLoadLim	# the allowed load limit as set by the perl global variable lonLoadLim

Line 1120 sub load_handler {	Line 1156 sub load_handler {
# Implicit Inputs:	# Implicit Inputs:
# $currenthostid - Global variable that carries the name of the host	# $currenthostid - Global variable that carries the name of the host
# known as.	# known as.
# $clientname - Global variable that carries the name of the hsot we're connected to.	# $clientname - Global variable that carries the name of the host we're connected to.
# Returns:	# Returns:
# 1 - Ok to continue processing.	# 1 - Ok to continue processing.
# 0 - Program should exit	# 0 - Program should exit
Line 1198 sub user_authorization_type {	Line 1234 sub user_authorization_type {
# a reply is written to the client.	# a reply is written to the client.
sub push_file_handler {	sub push_file_handler {
my ($cmd, $tail, $client) = @_;	my ($cmd, $tail, $client) = @_;
	&Debug("In push file handler");
my $userinput = "$cmd:$tail";	my $userinput = "$cmd:$tail";

# At this time we only know that the IP of our partner is a valid manager	# At this time we only know that the IP of our partner is a valid manager
Line 1206 sub push_file_handler {	Line 1242 sub push_file_handler {
# spoofing).	# spoofing).

my $cert = &GetCertificate($userinput);	my $cert = &GetCertificate($userinput);
if(&ValidManager($cert)) {	if(&ValidManager($cert)) {
	&Debug("Valid manager: $client");

# Now presumably we have the bona fides of both the peer host and the	# Now presumably we have the bona fides of both the peer host and the
# process making the request.	# process making the request.
Line 1215 sub push_file_handler {	Line 1252 sub push_file_handler {
&Reply($client, \$reply, $userinput);	&Reply($client, \$reply, $userinput);

} else {	} else {
	&logthis("push_file_handler $client is not valid");
&Failure( $client, "refused\n", $userinput);	&Failure( $client, "refused\n", $userinput);
}	}
return 1;	return 1;
Line 1587 sub ls3_handler {	Line 1625 sub ls3_handler {
}	}
&register_handler("ls3", \&ls3_handler, 0, 1, 0);	&register_handler("ls3", \&ls3_handler, 0, 1, 0);

	sub read_lonnet_global {
	my ($cmd,$tail,$client) = @_;
	my $userinput = "$cmd:$tail";
	my $requested = &Apache::lonnet::thaw_unescape($tail);
	my $result;
	my %packagevars = (
	spareid => \%Apache::lonnet::spareid,
	perlvar => \%Apache::lonnet::perlvar,
	);
	my %limit_to = (
	perlvar => {
	lonOtherAuthen => 1,
	lonBalancer => 1,
	lonVersion => 1,
	lonSysEMail => 1,
	lonHostID => 1,
	lonRole => 1,
	lonDefDomain => 1,
	lonLoadLim => 1,
	lonUserLoadLim => 1,
	}
	);
	if (ref($requested) eq 'HASH') {
	foreach my $what (keys(%{$requested})) {
	my $response;
	my $items = {};
	if (exists($packagevars{$what})) {
	if (ref($limit_to{$what}) eq 'HASH') {
	foreach my $varname (keys(%{$packagevars{$what}})) {
	if ($limit_to{$what}{$varname}) {
	$items->{$varname} = $packagevars{$what}{$varname};
	}
	}
	} else {
	$items = $packagevars{$what};
	}
	if ($what eq 'perlvar') {
	if (!exists($packagevars{$what}{'lonBalancer'})) {
	if ($dist =~ /^(centos\|rhes\|fedora\|scientific)/) {
	my $othervarref=LONCAPA::Configuration::read_conf('httpd.conf');
	if (ref($othervarref) eq 'HASH') {
	$items->{'lonBalancer'} = $othervarref->{'lonBalancer'};
	}
	}
	}
	}
	$response = &Apache::lonnet::freeze_escape($items);
	}
	$result .= &escape($what).'='.$response.'&';
	}
	}
	$result =~ s/\&$//;
	&Reply($client,\$result,$userinput);
	return 1;
	}
	&register_handler("readlonnetglobal", \&read_lonnet_global, 0, 1, 0);

	sub server_devalidatecache_handler {
	my ($cmd,$tail,$client) = @_;
	my $userinput = "$cmd:$tail";
	my $items = &unescape($tail);
	my @cached = split(/\&/,$items);
	foreach my $key (@cached) {
	if ($key =~ /:/) {
	my ($name,$id) = map { &unescape($_); } split(/:/,$key);
	&Apache::lonnet::devalidate_cache_new($name,$id);
	}
	}
	my $result = 'ok';
	&Reply($client,\$result,$userinput);
	return 1;
	}
	&register_handler("devalidatecache", \&server_devalidatecache_handler, 0, 1, 0);

	sub server_timezone_handler {
	my ($cmd,$tail,$client) = @_;
	my $userinput = "$cmd:$tail";
	my $timezone;
	my $clockfile = '/etc/sysconfig/clock'; # Fedora/CentOS/SuSE
	my $tzfile = '/etc/timezone'; # Debian/Ubuntu
	if (-e $clockfile) {
	if (open(my $fh,"<$clockfile")) {
	while (<$fh>) {
	next if (/^[\#\s]/);
	if (/^(?:TIME)?ZONE\s=\s['"]?\s*([\w\/]+)/) {
	$timezone = $1;
	last;
	}
	}
	close($fh);
	}
	} elsif (-e $tzfile) {
	if (open(my $fh,"<$tzfile")) {
	$timezone = <$fh>;
	close($fh);
	chomp($timezone);
	if ($timezone =~ m{^Etc/(\w+)$}) {
	$timezone = $1;
	}
	}
	}
	&Reply($client,\$timezone,$userinput); # This supports debug logging.
	return 1;
	}
	&register_handler("servertimezone", \&server_timezone_handler, 0, 1, 0);

	sub server_loncaparev_handler {
	my ($cmd,$tail,$client) = @_;
	my $userinput = "$cmd:$tail";
	&Reply($client,\$perlvar{'lonVersion'},$userinput);
	return 1;
	}
	&register_handler("serverloncaparev", \&server_loncaparev_handler, 0, 1, 0);

	sub server_homeID_handler {
	my ($cmd,$tail,$client) = @_;
	my $userinput = "$cmd:$tail";
	&Reply($client,\$perlvar{'lonHostID'},$userinput);
	return 1;
	}
	&register_handler("serverhomeID", \&server_homeID_handler, 0, 1, 0);

	sub server_distarch_handler {
	my ($cmd,$tail,$client) = @_;
	my $userinput = "$cmd:$tail";
	my $reply = &distro_and_arch();
	&Reply($client,\$reply,$userinput);
	return 1;
	}
	&register_handler("serverdistarch", \&server_distarch_handler, 0, 1, 0);

# Process a reinit request. Reinit requests that either	# Process a reinit request. Reinit requests that either
# lonc or lond be reinitialized so that an updated	# lonc or lond be reinitialized so that an updated
# host.tab or domain.tab can be processed.	# host.tab or domain.tab can be processed.
Line 1696 sub authenticate_handler {	Line 1865 sub authenticate_handler {
# upass - User's password.	# upass - User's password.
# checkdefauth - Pass to validate_user() to try authentication	# checkdefauth - Pass to validate_user() to try authentication
# with default auth type(s) if no user account.	# with default auth type(s) if no user account.
	# clientcancheckhost - Passed by clients with functionality in lonauth.pm
	# to check if session can be hosted.

my ($udom, $uname, $upass, $checkdefauth)=split(/:/,$tail);	my ($udom, $uname, $upass, $checkdefauth, $clientcancheckhost)=split(/:/,$tail);
&Debug(" Authenticate domain = $udom, user = $uname, password = $upass, checkdefauth = $checkdefauth");	&Debug(" Authenticate domain = $udom, user = $uname, password = $upass, checkdefauth = $checkdefauth");
chomp($upass);	chomp($upass);
$upass=&unescape($upass);	$upass=&unescape($upass);

my $pwdcorrect = &validate_user($udom,$uname,$upass,$checkdefauth);	my $pwdcorrect = &validate_user($udom,$uname,$upass,$checkdefauth);
if($pwdcorrect) {	if($pwdcorrect) {
&Reply( $client, "authorized\n", $userinput);	my $canhost = 1;
	unless ($clientcancheckhost) {
	my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
	my $uint_dom = &Apache::lonnet::internet_dom($uprimary_id);
	my @intdoms;
	my $internet_names = &Apache::lonnet::get_internet_names($clientname);
	if (ref($internet_names) eq 'ARRAY') {
	@intdoms = @{$internet_names};
	}
	unless ($uint_dom ne '' && grep(/^\Q$uint_dom\E$/,@intdoms)) {
	my ($remote,$hosted);
	my $remotesession = &get_usersession_config($udom,'remotesession');
	if (ref($remotesession) eq 'HASH') {
	$remote = $remotesession->{'remote'}
	}
	my $hostedsession = &get_usersession_config($clienthomedom,'hostedsession');
	if (ref($hostedsession) eq 'HASH') {
	$hosted = $hostedsession->{'hosted'};
	}
	$canhost = &Apache::lonnet::can_host_session($udom,$clientname,
	$clientversion,
	$remote,$hosted);
	}
	}
	if ($canhost) {
	&Reply( $client, "authorized\n", $userinput);
	} else {
	&Reply( $client, "not_allowed_to_host\n", $userinput);
	}
#	#
# Bad credentials: Failed to authorize	# Bad credentials: Failed to authorize
#	#
Line 1749 sub change_password_handler {	Line 1948 sub change_password_handler {
# npass - New password.	# npass - New password.
# context - Context in which this was called	# context - Context in which this was called
# (preferences or reset_by_email).	# (preferences or reset_by_email).
	# lonhost - HostID of server where request originated

my ($udom,$uname,$upass,$npass,$context)=split(/:/,$tail);	my ($udom,$uname,$upass,$npass,$context,$lonhost)=split(/:/,$tail);

$upass=&unescape($upass);	$upass=&unescape($upass);
$npass=&unescape($npass);	$npass=&unescape($npass);
Line 1759 sub change_password_handler {	Line 1959 sub change_password_handler {
# First require that the user can be authenticated with their	# First require that the user can be authenticated with their
# old password unless context was 'reset_by_email':	# old password unless context was 'reset_by_email':

my $validated;	my ($validated,$failure);
if ($context eq 'reset_by_email') {	if ($context eq 'reset_by_email') {
$validated = 1;	if ($lonhost eq '') {
	$failure = 'invalid_client';
	} else {
	$validated = 1;
	}
} else {	} else {
$validated = &validate_user($udom, $uname, $upass);	$validated = &validate_user($udom, $uname, $upass);
}	}
Line 1775 sub change_password_handler {	Line 1979 sub change_password_handler {
$salt=substr($salt,6,2);	$salt=substr($salt,6,2);
my $ncpass=crypt($npass,$salt);	my $ncpass=crypt($npass,$salt);
if(&rewrite_password_file($udom, $uname, "internal:$ncpass")) {	if(&rewrite_password_file($udom, $uname, "internal:$ncpass")) {
&logthis("Result of password change for "	my $msg="Result of password change for $uname: pwchange_success";
."$uname: pwchange_success");	if ($lonhost) {
	$msg .= " - request originated from: $lonhost";
	}
	&logthis($msg);
&Reply($client, "ok\n", $userinput);	&Reply($client, "ok\n", $userinput);
} else {	} else {
&logthis("Unable to open $uname passwd "	&logthis("Unable to open $uname passwd "
Line 1797 sub change_password_handler {	Line 2004 sub change_password_handler {
}	}

} else {	} else {
&Failure( $client, "non_authorized\n", $userinput);	if ($failure eq '') {
	$failure = 'non_authorized';
	}
	&Failure( $client, "$failure\n", $userinput);
}	}

return 1;	return 1;
Line 1847 sub add_user_handler {	Line 2057 sub add_user_handler {
."makeuser";	."makeuser";
}	}
unless ($fperror) {	unless ($fperror) {
my $result=&make_passwd_file($uname, $umode,$npass, $passfilename);	my $result=&make_passwd_file($uname,$udom,$umode,$npass, $passfilename);
&Reply($client,\$result, $userinput); #BUGBUG - could be fail	&Reply($client,\$result, $userinput); #BUGBUG - could be fail
} else {	} else {
&Failure($client, \$fperror, $userinput);	&Failure($client, \$fperror, $userinput);
Line 1908 sub change_authentication_handler {	Line 2118 sub change_authentication_handler {
my $passfilename = &password_path($udom, $uname);	my $passfilename = &password_path($udom, $uname);
if ($passfilename) { # Not allowed to create a new user!!	if ($passfilename) { # Not allowed to create a new user!!
# If just changing the unix passwd. need to arrange to run	# If just changing the unix passwd. need to arrange to run
# passwd since otherwise make_passwd_file will run	# passwd since otherwise make_passwd_file will fail as
# lcuseradd which fails if an account already exists	# creation of unix authenticated users is no longer supported
# (to prevent an unscrupulous LONCAPA admin from stealing	# except from the command line, when running make_domain_coordinator.pl
# an existing account by overwriting it as a LonCAPA account).

if(($oldauth =~/^unix/) && ($umode eq "unix")) {	if(($oldauth =~/^unix/) && ($umode eq "unix")) {
my $result = &change_unix_password($uname, $npass);	my $result = &change_unix_password($uname, $npass);
Line 1922 sub change_authentication_handler {	Line 2131 sub change_authentication_handler {
&Failure($client, \$result);	&Failure($client, \$result);
}	}
} else {	} else {
my $result=&make_passwd_file($uname, $umode,$npass,$passfilename);	my $result=&make_passwd_file($uname,$udom,$umode,$npass,$passfilename);
#	#
# If the current auth mode is internal, and the old auth mode was	# If the current auth mode is internal, and the old auth mode was
# unix, or krb*, and the user is an author for this domain,	# unix, or krb*, and the user is an author for this domain,
# re-run manage_permissions for that role in order to be able	# re-run manage_permissions for that role in order to be able
# to take ownership of the construction space back to www:www	# to take ownership of the construction space back to www:www
#	#


if( (($oldauth =~ /^unix/) && ($umode eq "internal")) \|\|
(($oldauth =~ /^internal/) && ($umode eq "unix")) ) {
if(&is_author($udom, $uname)) {
&Debug(" Need to manage author permissions...");
&manage_permissions("/$udom/_au", $udom, $uname, "$umode:");
}
}
&Reply($client, \$result, $userinput);	&Reply($client, \$result, $userinput);
}	}

Line 1984 sub is_home_handler {	Line 2186 sub is_home_handler {
&register_handler("home", \&is_home_handler, 0,1,0);	&register_handler("home", \&is_home_handler, 0,1,0);

#	#
# Process an update request for a resource?? I think what's going on here is	# Process an update request for a resource.
# that a resource has been modified that we hold a subscription to.	# A resource has been modified that we hold a subscription to.
# If the resource is not local, then we must update, or at least invalidate our	# If the resource is not local, then we must update, or at least invalidate our
# cached copy of the resource.	# cached copy of the resource.
# FUTURE WORK:
# I need to look at this logic carefully. My druthers would be to follow
# typical caching logic, and simple invalidate the cache, drop any subscription
# an let the next fetch start the ball rolling again... however that may
# actually be more difficult than it looks given the complex web of
# proxy servers.
# Parameters:	# Parameters:
# $cmd - The command that got us here.	# $cmd - The command that got us here.
# $tail - Tail of the command (remaining parameters).	# $tail - Tail of the command (remaining parameters).
Line 2017 sub update_resource_handler {	Line 2213 sub update_resource_handler {
my $ownership=ishome($fname);	my $ownership=ishome($fname);
if ($ownership eq 'not_owner') {	if ($ownership eq 'not_owner') {
if (-e $fname) {	if (-e $fname) {
	# Delete preview file, if exists
	unlink("$fname.tmp");
	# Get usage stats
my ($dev,$ino,$mode,$nlink,$uid,$gid,$rdev,$size,	my ($dev,$ino,$mode,$nlink,$uid,$gid,$rdev,$size,
$atime,$mtime,$ctime,$blksize,$blocks)=stat($fname);	$atime,$mtime,$ctime,$blksize,$blocks)=stat($fname);
my $now=time;	my $now=time;
my $since=$now-$atime;	my $since=$now-$atime;
	# If the file has not been used within lonExpire seconds,
	# unsubscribe from it and delete local copy
if ($since>$perlvar{'lonExpire'}) {	if ($since>$perlvar{'lonExpire'}) {
my $reply=&Apache::lonnet::reply("unsub:$fname","$clientname");	my $reply=&Apache::lonnet::reply("unsub:$fname","$clientname");
&devalidate_meta_cache($fname);	&devalidate_meta_cache($fname);
unlink("$fname");	unlink("$fname");
unlink("$fname.meta");	unlink("$fname.meta");
} else {	} else {
	# Yes, this is in active use. Get a fresh copy. Since it might be in
	# very active use and huge (like a movie), copy it to "in.transfer" filename first.
my $transname="$fname.in.transfer";	my $transname="$fname.in.transfer";
my $remoteurl=&Apache::lonnet::reply("sub:$fname","$clientname");	my $remoteurl=&Apache::lonnet::reply("sub:$fname","$clientname");
my $response;	my $response;
alarm(120);	# FIXME: cannot replicate files that take more than two minutes to transfer?
	# alarm(120);
	# FIXME: this should use the LWP mechanism, not internal alarms.
	alarm(1200);
{	{
my $ua=new LWP::UserAgent;	my $ua=new LWP::UserAgent;
my $request=new HTTP::Request('GET',"$remoteurl");	my $request=new HTTP::Request('GET',"$remoteurl");
Line 2038 sub update_resource_handler {	Line 2244 sub update_resource_handler {
}	}
alarm(0);	alarm(0);
if ($response->is_error()) {	if ($response->is_error()) {
	# FIXME: we should probably clean up here instead of just whine
unlink($transname);	unlink($transname);
my $message=$response->status_line;	my $message=$response->status_line;
&logthis("LWP GET: $message for $fname ($remoteurl)");	&logthis("LWP GET: $message for $fname ($remoteurl)");
} else {	} else {
if ($remoteurl!~/\.meta$/) {	if ($remoteurl!~/\.meta$/) {
	# FIXME: isn't there an internal LWP mechanism for this?
alarm(120);	alarm(120);
{	{
my $ua=new LWP::UserAgent;	my $ua=new LWP::UserAgent;
Line 2054 sub update_resource_handler {	Line 2262 sub update_resource_handler {
}	}
alarm(0);	alarm(0);
}	}
	# we successfully transfered, copy file over to real name
rename($transname,$fname);	rename($transname,$fname);
&devalidate_meta_cache($fname);	&devalidate_meta_cache($fname);
}	}
Line 2115 sub fetch_user_file_handler {	Line 2324 sub fetch_user_file_handler {

my $destname=$udir.'/'.$ufile;	my $destname=$udir.'/'.$ufile;
my $transname=$udir.'/'.$ufile.'.in.transit';	my $transname=$udir.'/'.$ufile.'.in.transit';
my $remoteurl='http://'.$clientip.'/userfiles/'.$fname;	my $clientprotocol=$Apache::lonnet::protocol{$clientname};
	$clientprotocol = 'http' if ($clientprotocol ne 'https');
	my $clienthost = &Apache::lonnet::hostname($clientname);
	my $remoteurl=$clientprotocol.'://'.$clienthost.'/userfiles/'.$fname;
my $response;	my $response;
Debug("Remote URL : $remoteurl Transfername $transname Destname: $destname");	Debug("Remote URL : $remoteurl Transfername $transname Destname: $destname");
alarm(120);	alarm(120);
Line 2137 sub fetch_user_file_handler {	Line 2349 sub fetch_user_file_handler {
unlink($transname);	unlink($transname);
&Failure($client, "failed\n", $userinput);	&Failure($client, "failed\n", $userinput);
} else {	} else {
	if ($fname =~ /^default.+\.(page\|sequence)$/) {
	my ($major,$minor) = split(/\./,$clientversion);
	if (($major < 2) \|\| ($major == 2 && $minor < 11)) {
	my $now = time;
	&Apache::lonnet::do_cache_new('crschange',$udom.'_'.$uname,$now,600);
	my $key = &escape('internal.contentchange');
	my $what = "$key=$now";
	my $hashref = &tie_user_hash($udom,$uname,'environment',
	&GDBM_WRCREAT(),"P",$what);
	if ($hashref) {
	$hashref->{$key}=$now;
	if (!&untie_user_hash($hashref)) {
	&logthis("error: ".($!+0)." untie (GDBM) failed ".
	"when updating internal.contentchange");
	}
	}
	}
	}
&Reply($client, "ok\n", $userinput);	&Reply($client, "ok\n", $userinput);
}	}
}	}
Line 2291 sub user_has_session_handler {	Line 2521 sub user_has_session_handler {

my ($udom, $uname) = map { &unescape($_) } (split(/:/, $tail));	my ($udom, $uname) = map { &unescape($_) } (split(/:/, $tail));

&logthis("Looking for $udom $uname");
opendir(DIR,$perlvar{'lonIDsDir'});	opendir(DIR,$perlvar{'lonIDsDir'});
my $filename;	my $filename;
while ($filename=readdir(DIR)) {	while ($filename=readdir(DIR)) {
Line 2944 sub get_profile_keys {	Line 3173 sub get_profile_keys {
sub dump_profile_database {	sub dump_profile_database {
my ($cmd, $tail, $client) = @_;	my ($cmd, $tail, $client) = @_;

	my $res = LONCAPA::Lond::dump_profile_database($tail);

	if ($res =~ /^error:/) {
	Failure($client, \$res, "$cmd:$tail");
	} else {
	Reply($client, \$res, "$cmd:$tail");
	}

	return 1;

	#TODO remove
my $userinput = "$cmd:$tail";	my $userinput = "$cmd:$tail";

my ($udom,$uname,$namespace) = split(/:/,$tail);	my ($udom,$uname,$namespace) = split(/:/,$tail);
Line 3010 sub dump_profile_database {	Line 3250 sub dump_profile_database {
# that is matched against	# that is matched against
# database keywords to do	# database keywords to do
# selective dumps.	# selective dumps.
	# range - optional range of entries
	# e.g., 10-20 would return the
	# 10th to 19th items, etc.
# $client - Channel open on the client.	# $client - Channel open on the client.
# Returns:	# Returns:
# 1 - Continue processing.	# 1 - Continue processing.
Line 3019 sub dump_profile_database {	Line 3262 sub dump_profile_database {
sub dump_with_regexp {	sub dump_with_regexp {
my ($cmd, $tail, $client) = @_;	my ($cmd, $tail, $client) = @_;

	my $res = LONCAPA::Lond::dump_with_regexp($tail, $clientversion);
my $userinput = "$cmd:$tail";
	if ($res =~ /^error:/) {
my ($udom,$uname,$namespace,$regexp,$range)=split(/:/,$tail);	Failure($client, \$res, "$cmd:$tail");
if (defined($regexp)) {
$regexp=&unescape($regexp);
} else {
$regexp='.';
}
my ($start,$end);
if (defined($range)) {
if ($range =~/^(\d+)\-(\d+)$/) {
($start,$end) = ($1,$2);
} elsif ($range =~/^(\d+)$/) {
($start,$end) = (0,$1);
} else {
undef($range);
}
}
my $hashref = &tie_user_hash($udom, $uname, $namespace,
&GDBM_READER());
if ($hashref) {
my $qresult='';
my $count=0;
while (my ($key,$value) = each(%$hashref)) {
if ($regexp eq '.') {
$count++;
if (defined($range) && $count >= $end) { last; }
if (defined($range) && $count < $start) { next; }
$qresult.=$key.'='.$value.'&';
} else {
my $unescapeKey = &unescape($key);
if (eval('$unescapeKey=~/$regexp/')) {
$count++;
if (defined($range) && $count >= $end) { last; }
if (defined($range) && $count < $start) { next; }
$qresult.="$key=$value&";
}
}
}
if (&untie_user_hash($hashref)) {
chop($qresult);
&Reply($client, \$qresult, $userinput);
} else {
&Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ".
"while attempting dump\n", $userinput);
}
} else {	} else {
&Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".	Reply($client, \$res, "$cmd:$tail");
"while attempting dump\n", $userinput);
}	}

return 1;	return 1;
Line 3608 sub put_course_id_hash_handler {	Line 3807 sub put_course_id_hash_handler {
# will be returned. Pre-2.2.0 legacy entries from	# will be returned. Pre-2.2.0 legacy entries from
# nohist_courseiddump will only contain usernames.	# nohist_courseiddump will only contain usernames.
# type - optional parameter for selection	# type - optional parameter for selection
# regexp_ok - if true, allow the supplied institutional code	# regexp_ok - if 1 or -1 allow the supplied institutional code
# filter to behave as a regular expression.	# filter to behave as a regular expression:
	# 1 will not exclude the course if the instcode matches the RE
	# -1 will exclude the course if the instcode matches the RE
# rtn_as_hash - whether to return the information available for	# rtn_as_hash - whether to return the information available for
# each matched item as a frozen hash of all	# each matched item as a frozen hash of all
# key, value pairs in the item's hash, or as a	# key, value pairs in the item's hash, or as a
Line 3625 sub put_course_id_hash_handler {	Line 3826 sub put_course_id_hash_handler {
# caller - if set to 'coursecatalog', courses set to be hidden	# caller - if set to 'coursecatalog', courses set to be hidden
# from course catalog will be excluded from results (unless	# from course catalog will be excluded from results (unless
# overridden by "showhidden".	# overridden by "showhidden".
	# cloner - escaped username:domain of course cloner (if picking course to
	# clone).
	# cc_clone_list - escaped comma separated list of courses for which
	# course cloner has active CC role (and so can clone
	# automatically).
	# cloneonly - filter by courses for which cloner has rights to clone.
	# createdbefore - include courses for which creation date preceeded this date.
	# createdafter - include courses for which creation date followed this date.
	# creationcontext - include courses created in specified context
	#
	# domcloner - flag to indicate if user can create CCs in course's domain.
	# If so, ability to clone course is automatic.
	# hasuniquecode - filter by courses for which a six character unique code has
	# been set.
#	#
# $client - The socket open on the client.	# $client - The socket open on the client.
# Returns:	# Returns:
Line 3633 sub put_course_id_hash_handler {	Line 3848 sub put_course_id_hash_handler {
# a reply is written to $client.	# a reply is written to $client.
sub dump_course_id_handler {	sub dump_course_id_handler {
my ($cmd, $tail, $client) = @_;	my ($cmd, $tail, $client) = @_;

	my $res = LONCAPA::Lond::dump_course_id_handler($tail);
	if ($res =~ /^error:/) {
	Failure($client, \$res, "$cmd:$tail");
	} else {
	Reply($client, \$res, "$cmd:$tail");
	}

	return 1;

	#TODO remove
my $userinput = "$cmd:$tail";	my $userinput = "$cmd:$tail";

my ($udom,$since,$description,$instcodefilter,$ownerfilter,$coursefilter,	my ($udom,$since,$description,$instcodefilter,$ownerfilter,$coursefilter,
$typefilter,$regexp_ok,$rtn_as_hash,$selfenrollonly,$catfilter,$showhidden,	$typefilter,$regexp_ok,$rtn_as_hash,$selfenrollonly,$catfilter,$showhidden,
$caller) =split(/:/,$tail);	$caller,$cloner,$cc_clone_list,$cloneonly,$createdbefore,$createdafter,
	$creationcontext,$domcloner,$hasuniquecode) =split(/:/,$tail);
my $now = time;	my $now = time;
	my ($cloneruname,$clonerudom,%cc_clone);
if (defined($description)) {	if (defined($description)) {
$description=&unescape($description);	$description=&unescape($description);
} else {	} else {
Line 3681 sub dump_course_id_handler {	Line 3909 sub dump_course_id_handler {
if (defined($catfilter)) {	if (defined($catfilter)) {
$catfilter=&unescape($catfilter);	$catfilter=&unescape($catfilter);
}	}
	if (defined($cloner)) {
	$cloner = &unescape($cloner);
	($cloneruname,$clonerudom) = ($cloner =~ /^($LONCAPA::match_username):($LONCAPA::match_domain)$/);
	}
	if (defined($cc_clone_list)) {
	$cc_clone_list = &unescape($cc_clone_list);
	my @cc_cloners = split('&',$cc_clone_list);
	foreach my $cid (@cc_cloners) {
	my ($clonedom,$clonenum) = split(':',$cid);
	next if ($clonedom ne $udom);
	$cc_clone{$clonedom.'_'.$clonenum} = 1;
	}
	}
	if ($createdbefore ne '') {
	$createdbefore = &unescape($createdbefore);
	} else {
	$createdbefore = 0;
	}
	if ($createdafter ne '') {
	$createdafter = &unescape($createdafter);
	} else {
	$createdafter = 0;
	}
	if ($creationcontext ne '') {
	$creationcontext = &unescape($creationcontext);
	} else {
	$creationcontext = '.';
	}
	unless ($hasuniquecode) {
	$hasuniquecode = '.';
	}
my $unpack = 1;	my $unpack = 1;
if ($description eq '.' && $instcodefilter eq '.' && $coursefilter eq '.' &&	if ($description eq '.' && $instcodefilter eq '.' && $ownerfilter eq '.' &&
$typefilter eq '.') {	$typefilter eq '.') {
$unpack = 0;	$unpack = 0;
}	}
Line 3692 sub dump_course_id_handler {	Line 3951 sub dump_course_id_handler {
if ($hashref) {	if ($hashref) {
while (my ($key,$value) = each(%$hashref)) {	while (my ($key,$value) = each(%$hashref)) {
my ($unesc_key,$lasttime_key,$lasttime,$is_hash,%val,	my ($unesc_key,$lasttime_key,$lasttime,$is_hash,%val,
%unesc_val,$selfenroll_end,$selfenroll_types);	%unesc_val,$selfenroll_end,$selfenroll_types,$created,
	$context);
$unesc_key = &unescape($key);	$unesc_key = &unescape($key);
if ($unesc_key =~ /^lasttime:/) {	if ($unesc_key =~ /^lasttime:/) {
next;	next;
Line 3703 sub dump_course_id_handler {	Line 3963 sub dump_course_id_handler {
$lasttime = $hashref->{$lasttime_key};	$lasttime = $hashref->{$lasttime_key};
next if ($lasttime<$since);	next if ($lasttime<$since);
}	}
	my ($canclone,$valchange);
my $items = &Apache::lonnet::thaw_unescape($value);	my $items = &Apache::lonnet::thaw_unescape($value);
if (ref($items) eq 'HASH') {	if (ref($items) eq 'HASH') {
	if ($hashref->{$lasttime_key} eq '') {
	next if ($since > 1);
	}
$is_hash = 1;	$is_hash = 1;
	if ($domcloner) {
	$canclone = 1;
	} elsif (defined($clonerudom)) {
	if ($items->{'cloners'}) {
	my @cloneable = split(',',$items->{'cloners'});
	if (@cloneable) {
	if (grep(/^\*$/,@cloneable)) {
	$canclone = 1;
	} elsif (grep(/^\*:\Q$clonerudom\E$/,@cloneable)) {
	$canclone = 1;
	} elsif (grep(/^\Q$cloneruname\E:\Q$clonerudom\E$/,@cloneable)) {
	$canclone = 1;
	}
	}
	unless ($canclone) {
	if ($cloneruname ne '' && $clonerudom ne '') {
	if ($cc_clone{$unesc_key}) {
	$canclone = 1;
	$items->{'cloners'} .= ','.$cloneruname.':'.
	$clonerudom;
	$valchange = 1;
	}
	}
	}
	} elsif (defined($cloneruname)) {
	if ($cc_clone{$unesc_key}) {
	$canclone = 1;
	$items->{'cloners'} = $cloneruname.':'.$clonerudom;
	$valchange = 1;
	}
	unless ($canclone) {
	if ($items->{'owner'} =~ /:/) {
	if ($items->{'owner'} eq $cloner) {
	$canclone = 1;
	}
	} elsif ($cloner eq $items->{'owner'}.':'.$udom) {
	$canclone = 1;
	}
	if ($canclone) {
	$items->{'cloners'} = $cloneruname.':'.$clonerudom;
	$valchange = 1;
	}
	}
	}
	}
if ($unpack \|\| !$rtn_as_hash) {	if ($unpack \|\| !$rtn_as_hash) {
$unesc_val{'descr'} = $items->{'description'};	$unesc_val{'descr'} = $items->{'description'};
$unesc_val{'inst_code'} = $items->{'inst_code'};	$unesc_val{'inst_code'} = $items->{'inst_code'};
$unesc_val{'owner'} = $items->{'owner'};	$unesc_val{'owner'} = $items->{'owner'};
$unesc_val{'type'} = $items->{'type'};	$unesc_val{'type'} = $items->{'type'};
	$unesc_val{'cloners'} = $items->{'cloners'};
	$unesc_val{'created'} = $items->{'created'};
	$unesc_val{'context'} = $items->{'context'};
}	}
$selfenroll_types = $items->{'selfenroll_types'};	$selfenroll_types = $items->{'selfenroll_types'};
$selfenroll_end = $items->{'selfenroll_end_date'};	$selfenroll_end = $items->{'selfenroll_end_date'};
	$created = $items->{'created'};
	$context = $items->{'context'};
	if ($hasuniquecode ne '.') {
	next unless ($items->{'uniquecode'});
	}
if ($selfenrollonly) {	if ($selfenrollonly) {
next if (!$selfenroll_types);	next if (!$selfenroll_types);
if (($selfenroll_end > 0) && ($selfenroll_end <= $now)) {	if (($selfenroll_end > 0) && ($selfenroll_end <= $now)) {
next;	next;
}	}
}	}
	if ($creationcontext ne '.') {
	next if (($context ne '') && ($context ne $creationcontext));
	}
	if ($createdbefore > 0) {
	next if (($created eq '') \|\| ($created > $createdbefore));
	}
	if ($createdafter > 0) {
	next if (($created eq '') \|\| ($created <= $createdafter));
	}
if ($catfilter ne '') {	if ($catfilter ne '') {
next if ($items->{'categories'} eq '');	next if ($items->{'categories'} eq '');
my @categories = split('&',$items->{'categories'});	my @categories = split('&',$items->{'categories'});
Line 3741 sub dump_course_id_handler {	Line 4067 sub dump_course_id_handler {
}	}
} else {	} else {
next if ($catfilter ne '');	next if ($catfilter ne '');
next if ($selfenrollonly);	next if ($selfenrollonly);
	next if ($createdbefore \|\| $createdafter);
	next if ($creationcontext ne '.');
	if ((defined($clonerudom)) && (defined($cloneruname))) {
	if ($cc_clone{$unesc_key}) {
	$canclone = 1;
	$val{'cloners'} = &escape($cloneruname.':'.$clonerudom);
	}
	}
$is_hash = 0;	$is_hash = 0;
my @courseitems = split(/:/,$value);	my @courseitems = split(/:/,$value);
$lasttime = pop(@courseitems);	$lasttime = pop(@courseitems);
Line 3750 sub dump_course_id_handler {	Line 4084 sub dump_course_id_handler {
}	}
($val{'descr'},$val{'inst_code'},$val{'owner'},$val{'type'}) = @courseitems;	($val{'descr'},$val{'inst_code'},$val{'owner'},$val{'type'}) = @courseitems;
}	}
	if ($cloneonly) {
	next unless ($canclone);
	}
my $match = 1;	my $match = 1;
if ($description ne '.') {	if ($description ne '.') {
if (!$is_hash) {	if (!$is_hash) {
Line 3763 sub dump_course_id_handler {	Line 4100 sub dump_course_id_handler {
if (!$is_hash) {	if (!$is_hash) {
$unesc_val{'inst_code'} = &unescape($val{'inst_code'});	$unesc_val{'inst_code'} = &unescape($val{'inst_code'});
}	}
if ($regexp_ok) {	if ($regexp_ok == 1) {
if (eval{$unesc_val{'inst_code'} !~ /$instcodefilter/}) {	if (eval{$unesc_val{'inst_code'} !~ /$instcodefilter/}) {
$match = 0;	$match = 0;
}	}
	} elsif ($regexp_ok == -1) {
	if (eval{$unesc_val{'inst_code'} =~ /$instcodefilter/}) {
	$match = 0;
	}
} else {	} else {
if (eval{$unesc_val{'inst_code'} !~ /\Q$instcodefilter\E/i}) {	if (eval{$unesc_val{'inst_code'} !~ /\Q$instcodefilter\E/i}) {
$match = 0;	$match = 0;
Line 3832 sub dump_course_id_handler {	Line 4173 sub dump_course_id_handler {
if ($match == 1) {	if ($match == 1) {
if ($rtn_as_hash) {	if ($rtn_as_hash) {
if ($is_hash) {	if ($is_hash) {
$qresult.=$key.'='.$value.'&';	if ($valchange) {
	my $newvalue = &Apache::lonnet::freeze_escape($items);
	$qresult.=$key.'='.$newvalue.'&';
	} else {
	$qresult.=$key.'='.$value.'&';
	}
} else {	} else {
my %rtnhash = ( 'description' => &unescape($val{'descr'}),	my %rtnhash = ( 'description' => &unescape($val{'descr'}),
'inst_code' => &unescape($val{'inst_code'}),	'inst_code' => &unescape($val{'inst_code'}),
'owner' => &unescape($val{'owner'}),	'owner' => &unescape($val{'owner'}),
'type' => &unescape($val{'type'}),	'type' => &unescape($val{'type'}),
	'cloners' => &unescape($val{'cloners'}),
);	);
my $items = &Apache::lonnet::freeze_escape(\%rtnhash);	my $items = &Apache::lonnet::freeze_escape(\%rtnhash);
$qresult.=$key.'='.$items.'&';	$qresult.=$key.'='.$items.'&';
Line 3869 sub dump_course_id_handler {	Line 4216 sub dump_course_id_handler {
}	}
&register_handler("courseiddump", \&dump_course_id_handler, 0, 1, 0);	&register_handler("courseiddump", \&dump_course_id_handler, 0, 1, 0);

	sub course_lastaccess_handler {
	my ($cmd, $tail, $client) = @_;
	my $userinput = "$cmd:$tail";
	my ($cdom,$cnum) = split(':',$tail);
	my (%lastaccess,$qresult);
	my $hashref = &tie_domain_hash($cdom, "nohist_courseids", &GDBM_WRCREAT());
	if ($hashref) {
	while (my ($key,$value) = each(%$hashref)) {
	my ($unesc_key,$lasttime);
	$unesc_key = &unescape($key);
	if ($cnum) {
	next unless ($unesc_key =~ /\Q$cdom\E_\Q$cnum\E$/);
	}
	if ($unesc_key =~ /^lasttime:($LONCAPA::match_domain\_$LONCAPA::match_courseid)/) {
	$lastaccess{$1} = $value;
	} else {
	my $items = &Apache::lonnet::thaw_unescape($value);
	if (ref($items) eq 'HASH') {
	unless ($lastaccess{$unesc_key}) {
	$lastaccess{$unesc_key} = '';
	}
	} else {
	my @courseitems = split(':',$value);
	$lastaccess{$unesc_key} = pop(@courseitems);
	}
	}
	}
	foreach my $cid (sort(keys(%lastaccess))) {
	$qresult.=&escape($cid).'='.$lastaccess{$cid}.'&';
	}
	if (&untie_domain_hash($hashref)) {
	if ($qresult) {
	chop($qresult);
	}
	&Reply($client, \$qresult, $userinput);
	} else {
	&Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
	"while attempting lastacourseaccess\n", $userinput);
	}
	} else {
	&Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
	"while attempting lastcourseaccess\n", $userinput);
	}
	return 1;
	}
	&register_handler("courselastaccess",\&course_lastaccess_handler, 0, 1, 0);

#	#
# Puts an unencrypted entry in a namespace db file at the domain level	# Puts an unencrypted entry in a namespace db file at the domain level
#	#
Line 3934 sub put_domain_handler {	Line 4328 sub put_domain_handler {
sub get_domain_handler {	sub get_domain_handler {
my ($cmd, $tail, $client) = @_;	my ($cmd, $tail, $client) = @_;


my $userinput = "$client:$tail";	my $userinput = "$client:$tail";

my ($udom,$namespace,$what)=split(/:/,$tail,3);	my ($udom,$namespace,$what)=split(/:/,$tail,3);
Line 3961 sub get_domain_handler {	Line 4356 sub get_domain_handler {
}	}
&register_handler("getdom", \&get_domain_handler, 0, 1, 0);	&register_handler("getdom", \&get_domain_handler, 0, 1, 0);


#	#
# Puts an id to a domains id database.	# Puts an id to a domains id database.
#	#
Line 4059 sub get_id_handler {	Line 4453 sub get_id_handler {
}	}
&register_handler("idget", \&get_id_handler, 0, 1, 0);	&register_handler("idget", \&get_id_handler, 0, 1, 0);

	# Deletes one or more ids in a domain's id database.
	#
	# Parameters:
	# $cmd - Command keyword (iddel).
	# $tail - Command tail. In this case a colon
	# separated list containing:
	# The domain for which we are deleting the id(s).
	# &-separated list of id(s) to delete.
	# $client - File open on client socket.
	# Returns:
	# 1 - Continue processing
	# 0 - Exit server.
	#
	#

	sub del_id_handler {
	my ($cmd,$tail,$client) = @_;

	my $userinput = "$cmd:$tail";

	my ($udom,$what)=split(/:/,$tail);
	chomp($what);
	my $hashref = &tie_domain_hash($udom, "ids", &GDBM_WRCREAT(),
	"D", $what);
	if ($hashref) {
	my @keys=split(/\&/,$what);
	foreach my $key (@keys) {
	delete($hashref->{$key});
	}
	if (&untie_user_hash($hashref)) {
	&Reply($client, "ok\n", $userinput);
	} else {
	&Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
	"while attempting iddel\n", $userinput);
	}
	} else {
	&Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
	"while attempting iddel\n", $userinput);
	}
	return 1;
	}
	&register_handler("iddel", \&del_id_handler, 0, 1, 0);

#	#
# Puts broadcast e-mail sent by Domain Coordinator in nohist_dcmail database	# Puts broadcast e-mail sent by Domain Coordinator in nohist_dcmail database
#	#
Line 4079 sub get_id_handler {	Line 4516 sub get_id_handler {
sub put_dcmail_handler {	sub put_dcmail_handler {
my ($cmd,$tail,$client) = @_;	my ($cmd,$tail,$client) = @_;
my $userinput = "$cmd:$tail";	my $userinput = "$cmd:$tail";


my ($udom,$what)=split(/:/,$tail);	my ($udom,$what)=split(/:/,$tail);
chomp($what);	chomp($what);
my $hashref = &tie_domain_hash($udom, "nohist_dcmail", &GDBM_WRCREAT());	my $hashref = &tie_domain_hash($udom, "nohist_dcmail", &GDBM_WRCREAT());
Line 4268 sub dump_domainroles_handler {	Line 4706 sub dump_domainroles_handler {
$rolesfilter=&unescape($rolesfilter);	$rolesfilter=&unescape($rolesfilter);
@roles = split(/\&/,$rolesfilter);	@roles = split(/\&/,$rolesfilter);
}	}

my $hashref = &tie_domain_hash($udom, "nohist_domainroles", &GDBM_WRCREAT());	my $hashref = &tie_domain_hash($udom, "nohist_domainroles", &GDBM_WRCREAT());
if ($hashref) {	if ($hashref) {
my $qresult = '';	my $qresult = '';
while (my ($key,$value) = each(%$hashref)) {	while (my ($key,$value) = each(%$hashref)) {
my $match = 1;	my $match = 1;
my ($start,$end) = split(/:/,&unescape($value));	my ($end,$start) = split(/:/,&unescape($value));
my ($trole,$uname,$udom,$runame,$rudom,$rsec) = split(/:/,&unescape($key));	my ($trole,$uname,$udom,$runame,$rudom,$rsec) = split(/:/,&unescape($key));
unless ($startfilter eq '.' \|\| !defined($startfilter)) {	unless (@roles < 1) {
if ($start >= $startfilter) {	unless (grep/^\Q$trole\E$/,@roles) {
$match = 0;	$match = 0;
	next;
}	}
}	}
unless ($endfilter eq '.' \|\| !defined($endfilter)) {	unless ($startfilter eq '.' \|\| !defined($startfilter)) {
if ($end <= $endfilter) {	if ((defined($start)) && ($start >= $startfilter)) {
$match = 0;	$match = 0;
	next;
}	}
}	}
unless (@roles < 1) {	unless ($endfilter eq '.' \|\| !defined($endfilter)) {
unless (grep/^\Q$trole\E$/,@roles) {	if ((defined($end)) && (($end > 0) && ($end <= $endfilter))) {
$match = 0;	$match = 0;
	next;
}	}
}	}
if ($match == 1) {	if ($match == 1) {
Line 4340 sub tmp_put_handler {	Line 4781 sub tmp_put_handler {
}	}
my ($id,$store);	my ($id,$store);
$tmpsnum++;	$tmpsnum++;
if ($context eq 'resetpw') {	if (($context eq 'resetpw') \|\| ($context eq 'createaccount')) {
$id = &md5_hex(&md5_hex(time.{}.rand().$$));	$id = &md5_hex(&md5_hex(time.{}.rand().$$));
} else {	} else {
$id = $$.'_'.$clientip.'_'.$tmpsnum;	$id = $$.'_'.$clientip.'_'.$tmpsnum;
Line 4575 sub enrollment_enabled_handler {	Line 5016 sub enrollment_enabled_handler {
}	}
&register_handler("autorun", \&enrollment_enabled_handler, 0, 1, 0);	&register_handler("autorun", \&enrollment_enabled_handler, 0, 1, 0);

	#
	# Validate an institutional code used for a LON-CAPA course.
	#
	# Formal Parameters:
	# $cmd - The command request that got us dispatched.
	# $tail - The tail of the command. In this case,
	# this is a colon separated set of words that will be split
	# into:
	# $dom - The domain for which the check of
	# institutional course code will occur.
	#
	# $instcode - The institutional code for the course
	# being requested, or validated for rights
	# to request.
	#
	# $owner - The course requestor (who will be the
	# course owner, in the form username:domain
	#
	# $client - Socket open on the client.
	# Returns:
	# 1 - Indicating processing should continue.
	#
	sub validate_instcode_handler {
	my ($cmd, $tail, $client) = @_;
	my $userinput = "$cmd:$tail";
	my ($dom,$instcode,$owner) = split(/:/, $tail);
	$instcode = &unescape($instcode);
	$owner = &unescape($owner);
	my ($outcome,$description,$credits) =
	&localenroll::validate_instcode($dom,$instcode,$owner);
	my $result = &escape($outcome).'&'.&escape($description).'&'.
	&escape($credits);
	&Reply($client, \$result, $userinput);

	return 1;
	}
	&register_handler("autovalidateinstcode", \&validate_instcode_handler, 0, 1, 0);

# Get the official sections for which auto-enrollment is possible.	# Get the official sections for which auto-enrollment is possible.
# Since the admin people won't know about 'unofficial sections'	# Since the admin people won't know about 'unofficial sections'
# we cannot auto-enroll on them.	# we cannot auto-enroll on them.
Line 4621 sub get_sections_handler {	Line 5100 sub get_sections_handler {
sub validate_course_owner_handler {	sub validate_course_owner_handler {
my ($cmd, $tail, $client) = @_;	my ($cmd, $tail, $client) = @_;
my $userinput = "$cmd:$tail";	my $userinput = "$cmd:$tail";
my ($inst_course_id, $owner, $cdom) = split(/:/, $tail);	my ($inst_course_id, $owner, $cdom, $coowners) = split(/:/, $tail);

$owner = &unescape($owner);	$owner = &unescape($owner);
my $outcome = &localenroll::new_course($inst_course_id,$owner,$cdom);	$coowners = &unescape($coowners);
	my $outcome = &localenroll::new_course($inst_course_id,$owner,$cdom,$coowners);
&Reply($client, \$outcome, $userinput);	&Reply($client, \$outcome, $userinput);


Line 4778 sub retrieve_auto_file_handler {	Line 5258 sub retrieve_auto_file_handler {
}	}
&register_handler("autoretrieve", \&retrieve_auto_file_handler, 0,1,0);	&register_handler("autoretrieve", \&retrieve_auto_file_handler, 0,1,0);

	sub crsreq_checks_handler {
	my ($cmd, $tail, $client) = @_;
	my $userinput = "$cmd:$tail";
	my $dom = $tail;
	my $result;
	my @reqtypes = ('official','unofficial','community','textbook');
	eval {
	local($SIG{__DIE__})='DEFAULT';
	my %validations;
	my $response = &localenroll::crsreq_checks($dom,\@reqtypes,
	\%validations);
	if ($response eq 'ok') {
	foreach my $key (keys(%validations)) {
	$result .= &escape($key).'='.&Apache::lonnet::freeze_escape($validations{$key}).'&';
	}
	$result =~ s/\&$//;
	} else {
	$result = 'error';
	}
	};
	if (!$@) {
	&Reply($client, \$result, $userinput);
	} else {
	&Failure($client,"unknown_cmd\n",$userinput);
	}
	return 1;
	}
	&register_handler("autocrsreqchecks", \&crsreq_checks_handler, 0, 1, 0);

	sub validate_crsreq_handler {
	my ($cmd, $tail, $client) = @_;
	my $userinput = "$cmd:$tail";
	my ($dom,$owner,$crstype,$inststatuslist,$instcode,$instseclist) = split(/:/, $tail);
	$instcode = &unescape($instcode);
	$owner = &unescape($owner);
	$crstype = &unescape($crstype);
	$inststatuslist = &unescape($inststatuslist);
	$instcode = &unescape($instcode);
	$instseclist = &unescape($instseclist);
	my $outcome;
	eval {
	local($SIG{__DIE__})='DEFAULT';
	$outcome = &localenroll::validate_crsreq($dom,$owner,$crstype,
	$inststatuslist,$instcode,
	$instseclist);
	};
	if (!$@) {
	&Reply($client, \$outcome, $userinput);
	} else {
	&Failure($client,"unknown_cmd\n",$userinput);
	}
	return 1;
	}
	&register_handler("autocrsreqvalidation", \&validate_crsreq_handler, 0, 1, 0);

	sub crsreq_update_handler {
	my ($cmd, $tail, $client) = @_;
	my $userinput = "$cmd:$tail";
	my ($cdom,$cnum,$crstype,$action,$ownername,$ownerdomain,$fullname,$title,$code,$infohashref) =
	split(/:/, $tail);
	$crstype = &unescape($crstype);
	$action = &unescape($action);
	$ownername = &unescape($ownername);
	$ownerdomain = &unescape($ownerdomain);
	$fullname = &unescape($fullname);
	$title = &unescape($title);
	$code = &unescape($code);
	my $incoming = &Apache::lonnet::thaw_unescape($infohashref);
	my ($result,$outcome);
	eval {
	local($SIG{__DIE__})='DEFAULT';
	my %rtnhash;
	$outcome = &localenroll::crsreq_updates($cdom,$cnum,$crstype,$action,
	$ownername,$ownerdomain,$fullname,
	$title,$code,$incoming,\%rtnhash);
	if ($outcome eq 'ok') {
	my @posskeys = qw(createdweb createdmsg queuedweb queuedmsg formitems reviewweb);
	foreach my $key (keys(%rtnhash)) {
	if (grep(/^\Q$key\E/,@posskeys)) {
	$result .= &escape($key).'='.&Apache::lonnet::freeze_escape($rtnhash{$key}).'&';
	}
	}
	$result =~ s/\&$//;
	}
	};
	if (!$@) {
	if ($outcome eq 'ok') {
	&Reply($client, \$result, $userinput);
	} else {
	&Reply($client, "format_error\n", $userinput);
	}
	} else {
	&Failure($client,"unknown_cmd\n",$userinput);
	}
	return 1;
	}
	&register_handler("autocrsrequpdate", \&crsreq_update_handler, 0, 1, 0);

#	#
# Read and retrieve institutional code format (for support form).	# Read and retrieve institutional code format (for support form).
# Formal Parameters:	# Formal Parameters:
Line 4862 sub get_institutional_defaults_handler {	Line 5440 sub get_institutional_defaults_handler {
&register_handler("autoinstcodedefaults",	&register_handler("autoinstcodedefaults",
\&get_institutional_defaults_handler,0,1,0);	\&get_institutional_defaults_handler,0,1,0);

	sub get_possible_instcodes_handler {
	my ($cmd, $tail, $client) = @_;
	my $userinput = "$cmd:$tail";

	my $reply;
	my $cdom = $tail;
	my (@codetitles,%cat_titles,%cat_order,@code_order);
	my $formatreply = &localenroll::possible_instcodes($cdom,
	\@codetitles,
	\%cat_titles,
	\%cat_order,
	\@code_order);
	if ($formatreply eq 'ok') {
	my $result = join('&',map {&escape($_);} (@codetitles)).':';
	$result .= join('&',map {&escape($_);} (@code_order)).':';
	foreach my $key (keys(%cat_titles)) {
	$result .= &escape($key).'='.&Apache::lonnet::freeze_escape($cat_titles{$key}).'&';
	}
	$result =~ s/\&$//;
	$result .= ':';
	foreach my $key (keys(%cat_order)) {
	$result .= &escape($key).'='.&Apache::lonnet::freeze_escape($cat_order{$key}).'&';
	}
	$result =~ s/\&$//;
	&Reply($client,\$result,$userinput);
	} else {
	&Reply($client, "format_error\n", $userinput);
	}
	return 1;
	}
	&register_handler("autopossibleinstcodes",
	\&get_possible_instcodes_handler,0,1,0);

sub get_institutional_user_rules {	sub get_institutional_user_rules {
my ($cmd, $tail, $client) = @_;	my ($cmd, $tail, $client) = @_;
my $userinput = "$cmd:$tail";	my $userinput = "$cmd:$tail";
Line 5452 sub lcpasswdstrerror {	Line 6063 sub lcpasswdstrerror {
}	}
}	}

#
# Convert an error return code from lcuseradd to a string value:
#
sub lcuseraddstrerror {
my $ErrorCode = shift;
if(($ErrorCode < 0) \|\| ($ErrorCode > $lastadderror)) {
return "lcuseradd - Unrecognized error code: ".$ErrorCode;
} else {
return $adderrors[$ErrorCode];
}
}

# grabs exception and records it to log before exiting	# grabs exception and records it to log before exiting
sub catchexception {	sub catchexception {
my ($error)=@_;	my ($error)=@_;
Line 5524 if (-e $pidfile) {	Line 6123 if (-e $pidfile) {
$server = IO::Socket::INET->new(LocalPort => $perlvar{'londPort'},	$server = IO::Socket::INET->new(LocalPort => $perlvar{'londPort'},
Type => SOCK_STREAM,	Type => SOCK_STREAM,
Proto => 'tcp',	Proto => 'tcp',
Reuse => 1,	ReuseAddr => 1,
Listen => 10 )	Listen => 10 )
or die "making socket: $@\n";	or die "making socket: $@\n";

Line 5587 sub HUPSMAN { # sig	Line 6186 sub HUPSMAN { # sig
# a setuid perl script that can be root for us to do this job.	# a setuid perl script that can be root for us to do this job.
#	#
sub ReloadApache {	sub ReloadApache {
my $execdir = $perlvar{'lonDaemons'};	# --------------------------- Handle case of another apachereload process (locking)
my $script = $execdir."/apachereload";	if (&LONCAPA::try_to_lock('/tmp/lock_apachereload')) {
system($script);	my $execdir = $perlvar{'lonDaemons'};
	my $script = $execdir."/apachereload";
	system($script);
	unlink('/tmp/lock_apachereload'); # Remove the lock file.
	}
}	}

#	#
Line 5700 sub Debug {	Line 6303 sub Debug {
# reply - Text to send to client.	# reply - Text to send to client.
# request - Original request from client.	# request - Original request from client.
#	#
	#NOTE $reply must be terminated by exactly one \n. If $reply is a reference
	#this is done automatically ($$reply must not contain any \n in this case).
	#If $reply is a string the caller has to ensure this.
sub Reply {	sub Reply {
my ($fd, $reply, $request) = @_;	my ($fd, $reply, $request) = @_;
if (ref($reply)) {	if (ref($reply)) {
Line 5762 sub logstatus {	Line 6368 sub logstatus {
sub initnewstatus {	sub initnewstatus {
my $docdir=$perlvar{'lonDocRoot'};	my $docdir=$perlvar{'lonDocRoot'};
my $fh=IO::File->new(">$docdir/lon-status/londstatus.txt");	my $fh=IO::File->new(">$docdir/lon-status/londstatus.txt");
my $now=time;	my $now=time();
my $local=localtime($now);	my $local=localtime($now);
print $fh "LOND status $local - parent $$\n\n";	print $fh "LOND status $local - parent $$\n\n";
opendir(DIR,"$docdir/lon-status/londchld");	opendir(DIR,"$docdir/lon-status/londchld");
Line 5851 $SIG{USR2} = \&UpdateHosts;	Line 6457 $SIG{USR2} = \&UpdateHosts;

# Read the host hashes:	# Read the host hashes:
&Apache::lonnet::load_hosts_tab();	&Apache::lonnet::load_hosts_tab();
	my %iphost = &Apache::lonnet::get_iphost(1);

	$dist=`$perlvar{'lonDaemons'}/distprobe`;

my $dist=`$perlvar{'lonDaemons'}/distprobe`;	my $arch = `uname -i`;
	chomp($arch);
	if ($arch eq 'unknown') {
	$arch = `uname -m`;
	chomp($arch);
	}

# --------------------------------------------------------------	# --------------------------------------------------------------
# Accept connections. When a connection comes in, it is validated	# Accept connections. When a connection comes in, it is validated
Line 5911 sub make_new_child {	Line 6525 sub make_new_child {
or die "Can't unblock SIGINT for fork: $!\n";	or die "Can't unblock SIGINT for fork: $!\n";
$children{$pid} = $clientip;	$children{$pid} = $clientip;
&status('Started child '.$pid);	&status('Started child '.$pid);
	close($client);
return;	return;
} else {	} else {
# Child can not return from this subroutine.	# Child can not return from this subroutine.
Line 5919 sub make_new_child {	Line 6534 sub make_new_child {
#don't get intercepted	#don't get intercepted
$SIG{USR1}= \&logstatus;	$SIG{USR1}= \&logstatus;
$SIG{ALRM}= \&timeout;	$SIG{ALRM}= \&timeout;
	#
	# Block sigpipe as it gets thrownon socket disconnect and we want to
	# deal with that as a read faiure instead.
	#
	my $blockset = POSIX::SigSet->new(SIGPIPE);
	sigprocmask(SIG_BLOCK, $blockset);

$lastlog='Forked ';	$lastlog='Forked ';
$status='Forked';	$status='Forked';

Line 5930 sub make_new_child {	Line 6552 sub make_new_child {
#---------------------------------------------------- kerberos 5 initialization	#---------------------------------------------------- kerberos 5 initialization
&Authen::Krb5::init_context();	&Authen::Krb5::init_context();
unless (($dist eq 'fedora5') \|\| ($dist eq 'fedora4') \|\|	unless (($dist eq 'fedora5') \|\| ($dist eq 'fedora4') \|\|
($dist eq 'fedora6') \|\| ($dist eq 'suse9.3')) {	($dist eq 'fedora6') \|\| ($dist eq 'suse9.3') \|\|
	($dist eq 'suse12.2') \|\| ($dist eq 'suse12.3') \|\|
	($dist eq 'suse13.1')) {
&Authen::Krb5::init_ets();	&Authen::Krb5::init_ets();
}	}

Line 5944 sub make_new_child {	Line 6568 sub make_new_child {
if ($clientip eq '127.0.0.1') {	if ($clientip eq '127.0.0.1') {
$outsideip=&Apache::lonnet::get_host_ip($perlvar{'lonHostID'});	$outsideip=&Apache::lonnet::get_host_ip($perlvar{'lonHostID'});
}	}
	&ReadManagerTable();
my $clientrec=defined(&Apache::lonnet::get_hosts_from_ip($outsideip));	my $clientrec=defined(&Apache::lonnet::get_hosts_from_ip($outsideip));
my $ismanager=($managers{$outsideip} ne undef);	my $ismanager=($managers{$outsideip} ne undef);
$clientname = "[unknonwn]";	$clientname = "[unknown]";
if($clientrec) { # Establish client type.	if($clientrec) { # Establish client type.
$ConnectionType = "client";	$ConnectionType = "client";
$clientname = (&Apache::lonnet::get_hosts_from_ip($outsideip))[-1];	$clientname = (&Apache::lonnet::get_hosts_from_ip($outsideip))[-1];
Line 5975 sub make_new_child {	Line 6599 sub make_new_child {
#	#
# If the remote is attempting a local init... give that a try:	# If the remote is attempting a local init... give that a try:
#	#
my ($i, $inittype) = split(/:/, $remotereq);	logthis("remotereq: $remotereq");
	(my $i, my $inittype, $clientversion) = split(/:/, $remotereq);
	# For LON-CAPA 2.9, the client session will have sent its LON-CAPA
	# version when initiating the connection. For LON-CAPA 2.8 and older,
	# the version is retrieved from the global %loncaparevs in lonnet.pm.
	# $clientversion contains path to keyfile if $inittype eq 'local'
	# it's overridden below in this case
	$clientversion \|\|= $Apache::lonnet::loncaparevs{$clientname};

# If the connection type is ssl, but I didn't get my	# If the connection type is ssl, but I didn't get my
# certificate files yet, then I'll drop back to	# certificate files yet, then I'll drop back to
Line 5995 sub make_new_child {	Line 6626 sub make_new_child {
}	}

if($inittype eq "local") {	if($inittype eq "local") {
	$clientversion = $perlvar{'lonVersion'};
my $key = LocalConnection($client, $remotereq);	my $key = LocalConnection($client, $remotereq);
if($key) {	if($key) {
Debug("Got local key $key");	Debug("Got local key $key");
Line 6002 sub make_new_child {	Line 6634 sub make_new_child {
my $cipherkey = pack("H32", $key);	my $cipherkey = pack("H32", $key);
$cipher = new IDEA($cipherkey);	$cipher = new IDEA($cipherkey);
print $client "ok:local\n";	print $client "ok:local\n";
&logthis('<font color="green"'	&logthis('<font color="green">'
. "Successful local authentication </font>");	. "Successful local authentication </font>");
$keymode = "local"	$keymode = "local"
} else {	} else {
Line 6066 sub make_new_child {	Line 6698 sub make_new_child {
# ------------------------------------------------------------ Process requests	# ------------------------------------------------------------ Process requests
my $keep_going = 1;	my $keep_going = 1;
my $user_input;	my $user_input;
	my $clienthost = &Apache::lonnet::hostname($clientname);
	my $clientserverhomeID = &Apache::lonnet::get_server_homeID($clienthost);
	$clienthomedom = &Apache::lonnet::host_domain($clientserverhomeID);
while(($user_input = get_request) && $keep_going) {	while(($user_input = get_request) && $keep_going) {
alarm(120);	alarm(120);
Debug("Main: Got $user_input\n");	Debug("Main: Got $user_input\n");
Line 6115 sub is_author {	Line 6750 sub is_author {

# Author role should show up as a key /domain/_au	# Author role should show up as a key /domain/_au

my $key = "/$domain/_au";
my $value;	my $value;
if (defined($hashref)) {	if ($hashref) {
$value = $hashref->{$key};
}

if(defined($value)) {	my $key = "/$domain/_au";
&Debug("$user @ $domain is an author");	if (defined($hashref)) {
	$value = $hashref->{$key};
	if(!untie_user_hash($hashref)) {
	return 'error: ' . ($!+0)." untie (GDBM) Failed";
	}
	}

	if(defined($value)) {
	&Debug("$user @ $domain is an author");
	}
	} else {
	return 'error: '.($!+0)." tie (GDBM) Failed";
}	}

return defined($value);	return defined($value);
}	}
#	#
# Checks to see if the input roleput request was to set	# Checks to see if the input roleput request was to set
# an author role. If so, invokes the lchtmldir script to set	# an author role. If so, creates construction space
# up a correct public_html
# Parameters:	# Parameters:
# request - The request sent to the rolesput subchunk.	# request - The request sent to the rolesput subchunk.
# We're looking for /domain/_au	# We're looking for /domain/_au
Line 6140 sub is_author {	Line 6782 sub is_author {
#	#
sub manage_permissions {	sub manage_permissions {
my ($request, $domain, $user, $authtype) = @_;	my ($request, $domain, $user, $authtype) = @_;

&Debug("manage_permissions: $request $domain $user $authtype");

# See if the request is of the form /$domain/_au	# See if the request is of the form /$domain/_au
if($request =~ /^(\/\Q$domain\E\/_au)$/) { # It's an author rolesput...	if($request =~ /^(\/\Q$domain\E\/_au)$/) { # It's an author rolesput...
my $execdir = $perlvar{'lonDaemons'};	my $path=$perlvar{'lonDocRoot'}."/priv/$domain";
my $userhome= "/home/$user" ;	unless (-e $path) {
&logthis("system $execdir/lchtmldir $userhome $user $authtype");	mkdir($path);
&Debug("Setting homedir permissions for $userhome");	}
system("$execdir/lchtmldir $userhome $user $authtype");	unless (-e $path.'/'.$user) {
	mkdir($path.'/'.$user);
	}
}	}
}	}

Line 6224 sub rewrite_password_file {	Line 6865 sub rewrite_password_file {

# Returns the authorization type or nouser if there is no such user.	# Returns the authorization type or nouser if there is no such user.
#	#
sub get_auth_type	sub get_auth_type {
{

my ($domain, $user) = @_;	my ($domain, $user) = @_;

Debug("get_auth_type( $domain, $user ) \n");	Debug("get_auth_type( $domain, $user ) \n");
Line 6321 sub validate_user {	Line 6960 sub validate_user {
} else {	} else {
$validated = 0;	$validated = 0;
}	}
}	} elsif ($howpwd eq "krb4") { # user is in kerberos 4 auth. domain.
elsif ($howpwd eq "krb4") { # user is in kerberos 4 auth. domain.	my $checkwithkrb5 = 0;
if(! ($password =~ /$null/) ) {	if ($dist =~/^fedora(\d+)$/) {
my $k4error = &Authen::Krb4::get_pw_in_tkt($user,	if ($1 > 11) {
"",	$checkwithkrb5 = 1;
$contentpwd,,	}
'krbtgt',	} elsif ($dist =~ /^suse([\d.]+)$/) {
$contentpwd,	if ($1 > 11.1) {
1,	$checkwithkrb5 = 1;
$password);	}
if(!$k4error) {	}
$validated = 1;	if ($checkwithkrb5) {
} else {	$validated = &krb5_authen($password,$null,$user,$contentpwd);
$validated = 0;	} else {
&logthis('krb4: '.$user.', '.$contentpwd.', '.	$validated = &krb4_authen($password,$null,$user,$contentpwd);
&Authen::Krb4::get_err_txt($Authen::Krb4::error));	}
}
} else {
$validated = 0; # Password has a match with null.
}
} elsif ($howpwd eq "krb5") { # User is in kerberos 5 auth. domain.	} elsif ($howpwd eq "krb5") { # User is in kerberos 5 auth. domain.
if(!($password =~ /$null/)) { # Null password not allowed.	$validated = &krb5_authen($password,$null,$user,$contentpwd);
my $krbclient = &Authen::Krb5::parse_name($user.'@'
.$contentpwd);
my $krbservice = "krbtgt/".$contentpwd."\@".$contentpwd;
my $krbserver = &Authen::Krb5::parse_name($krbservice);
my $credentials= &Authen::Krb5::cc_default();
$credentials->initialize(&Authen::Krb5::parse_name($user.'@'
.$contentpwd));
my $krbreturn;
if (exists(&Authen::Krb5::get_init_creds_password)) {
$krbreturn =
&Authen::Krb5::get_init_creds_password($krbclient,$password,
$krbservice);
$validated = (ref($krbreturn) eq 'Authen::Krb5::Creds');
} else {
$krbreturn =
&Authen::Krb5::get_in_tkt_with_password($krbclient,$krbserver,
$password,$credentials);
$validated = ($krbreturn == 1);
}
if (!$validated) {
&logthis('krb5: '.$user.', '.$contentpwd.', '.
&Authen::Krb5::error());
}
} else {
$validated = 0;
}
} elsif ($howpwd eq "localauth") {	} elsif ($howpwd eq "localauth") {
# Authenticate via installation specific authentcation method:	# Authenticate via installation specific authentcation method:
$validated = &localauth::localauth($user,	$validated = &localauth::localauth($user,
Line 6399 sub validate_user {	Line 7008 sub validate_user {
return $validated;	return $validated;
}	}

	sub krb4_authen {
	my ($password,$null,$user,$contentpwd) = @_;
	my $validated = 0;
	if (!($password =~ /$null/) ) { # Null password not allowed.
	eval {
	require Authen::Krb4;
	};
	if (!$@) {
	my $k4error = &Authen::Krb4::get_pw_in_tkt($user,
	"",
	$contentpwd,,
	'krbtgt',
	$contentpwd,
	1,
	$password);
	if(!$k4error) {
	$validated = 1;
	} else {
	$validated = 0;
	&logthis('krb4: '.$user.', '.$contentpwd.', '.
	&Authen::Krb4::get_err_txt($Authen::Krb4::error));
	}
	} else {
	$validated = krb5_authen($password,$null,$user,$contentpwd);
	}
	}
	return $validated;
	}

	sub krb5_authen {
	my ($password,$null,$user,$contentpwd) = @_;
	my $validated = 0;
	if(!($password =~ /$null/)) { # Null password not allowed.
	my $krbclient = &Authen::Krb5::parse_name($user.'@'
	.$contentpwd);
	my $krbservice = "krbtgt/".$contentpwd."\@".$contentpwd;
	my $krbserver = &Authen::Krb5::parse_name($krbservice);
	my $credentials= &Authen::Krb5::cc_default();
	$credentials->initialize(&Authen::Krb5::parse_name($user.'@'
	.$contentpwd));
	my $krbreturn;
	if (exists(&Authen::Krb5::get_init_creds_password)) {
	$krbreturn =
	&Authen::Krb5::get_init_creds_password($krbclient,$password,
	$krbservice);
	$validated = (ref($krbreturn) eq 'Authen::Krb5::Creds');
	} else {
	$krbreturn =
	&Authen::Krb5::get_in_tkt_with_password($krbclient,$krbserver,
	$password,$credentials);
	$validated = ($krbreturn == 1);
	}
	if (!$validated) {
	&logthis('krb5: '.$user.', '.$contentpwd.', '.
	&Authen::Krb5::error());
	}
	}
	return $validated;
	}

sub addline {	sub addline {
my ($fname,$hostid,$ip,$newline)=@_;	my ($fname,$hostid,$ip,$newline)=@_;
Line 6611 sub subscribe {	Line 7279 sub subscribe {
# the metadata	# the metadata
unless ($fname=~/\.meta$/) { &unsub("$fname.meta",$clientip); }	unless ($fname=~/\.meta$/) { &unsub("$fname.meta",$clientip); }
$fname=~s/\/home\/httpd\/html\/res/raw/;	$fname=~s/\/home\/httpd\/html\/res/raw/;
$fname="http://".&Apache::lonnet::hostname($perlvar{'lonHostID'})."/".$fname;	my $protocol = $Apache::lonnet::protocol{$perlvar{'lonHostID'}};
	$protocol = 'http' if ($protocol ne 'https');
	$fname=$protocol.'://'.&Apache::lonnet::hostname($perlvar{'lonHostID'})."/".$fname;
$result="$fname\n";	$result="$fname\n";
}	}
} else {	} else {
Line 6653 sub change_unix_password {	Line 7323 sub change_unix_password {


sub make_passwd_file {	sub make_passwd_file {
my ($uname, $umode,$npass,$passfilename)=@_;	my ($uname,$udom,$umode,$npass,$passfilename)=@_;
my $result="ok";	my $result="ok";
if ($umode eq 'krb4' or $umode eq 'krb5') {	if ($umode eq 'krb4' or $umode eq 'krb5') {
{	{
Line 6687 sub make_passwd_file {	Line 7357 sub make_passwd_file {
}	}
}	}
} elsif ($umode eq 'unix') {	} elsif ($umode eq 'unix') {
{	&logthis(">>>Attempt to create unix account blocked -- unix auth not available for new users.");
#	$result="no_new_unix_accounts";
# Don't allow the creation of privileged accounts!!! that would
# be real bad!!!
#
my $uid = getpwnam($uname);
if((defined $uid) && ($uid == 0)) {
&logthis(">>>Attempted to create privilged account blocked");
return "no_priv_account_error\n";
}

my $execpath ="$perlvar{'lonDaemons'}/"."lcuseradd";

my $lc_error_file = $execdir."/tmp/lcuseradd".$$.".status";
{
&Debug("Executing external: ".$execpath);
&Debug("user = ".$uname.", Password =". $npass);
my $se = IO::File->new("\|$execpath > $perlvar{'lonDaemons'}/logs/lcuseradd.log");
print $se "$uname\n";
print $se "$npass\n";
print $se "$npass\n";
print $se "$lc_error_file\n"; # Status -> unique file.
}
if (-r $lc_error_file) {
&Debug("Opening error file: $lc_error_file");
my $error = IO::File->new("< $lc_error_file");
my $useraddok = <$error>;
$error->close;
unlink($lc_error_file);

chomp $useraddok;

if($useraddok > 0) {
my $error_text = &lcuseraddstrerror($useraddok);
&logthis("Failed lcuseradd: $error_text");
$result = "lcuseradd_failed:$error_text";
} else {
my $pf = IO::File->new(">$passfilename");
if($pf) {
print $pf "unix:\n";
} else {
$result = "pass_file_failed_error";
}
}
} else {
&Debug("Could not locate lcuseradd error: $lc_error_file");
$result="bug_lcuseradd_no_output_file";
}
}
} elsif ($umode eq 'none') {	} elsif ($umode eq 'none') {
{	{
my $pf = IO::File->new("> $passfilename");	my $pf = IO::File->new("> $passfilename");
Line 6769 sub sethost {	Line 7392 sub sethost {
eq &Apache::lonnet::get_host_ip($hostid)) {	eq &Apache::lonnet::get_host_ip($hostid)) {
$currenthostid =$hostid;	$currenthostid =$hostid;
$currentdomainid=&Apache::lonnet::host_domain($hostid);	$currentdomainid=&Apache::lonnet::host_domain($hostid);
&logthis("Setting hostid to $hostid, and domain to $currentdomainid");	# &logthis("Setting hostid to $hostid, and domain to $currentdomainid");
} else {	} else {
&logthis("Requested host id $hostid not an alias of ".	&logthis("Requested host id $hostid not an alias of ".
$perlvar{'lonHostID'}." refusing connection");	$perlvar{'lonHostID'}." refusing connection");
Line 6784 sub version {	Line 7407 sub version {
return "version:$VERSION";	return "version:$VERSION";
}	}

	sub get_usersession_config {
	my ($dom,$name) = @_;
	my ($usersessionconf,$cached)=&Apache::lonnet::is_cached_new($name,$dom);
	if (defined($cached)) {
	return $usersessionconf;
	} else {
	my %domconfig = &Apache::lonnet::get_dom('configuration',['usersessions'],$dom);
	if (ref($domconfig{'usersessions'}) eq 'HASH') {
	&Apache::lonnet::do_cache_new($name,$dom,$domconfig{'usersessions'},3600);
	return $domconfig{'usersessions'};
	}
	}
	return;
	}




	sub distro_and_arch {
	return $dist.':'.$arch;
	}

# ----------------------------------- POD (plain old documentation, CPAN style)	# ----------------------------------- POD (plain old documentation, CPAN style)

Line 6992 Place in B<logs/lond.log>	Line 7636 Place in B<logs/lond.log>

stores hash in namespace	stores hash in namespace

=item rolesputy	=item rolesput

put a role into a user's environment	put a role into a user's environment

Line 7109 Authen::Krb5	Line 7753 Authen::Krb5

=head1 COREQUISITES	=head1 COREQUISITES

	none

=head1 OSNAMES	=head1 OSNAMES

linux	linux
Line 7196 or the CA's certificate in the call to l	Line 7842 or the CA's certificate in the call to l
<error> is the textual reason this failed. Usual reasons:	<error> is the textual reason this failed. Usual reasons:

=over 2	=over 2

=item Apache config file for loncapa incorrect:	=item Apache config file for loncapa incorrect:

one of the variables	one of the variables
lonCertificateDirectory, lonnetCertificateAuthority, or lonnetCertificate	lonCertificateDirectory, lonnetCertificateAuthority, or lonnetCertificate
undefined or incorrect	undefined or incorrect
Line 7317 Could not rewrite the	Line 7963 Could not rewrite the
internal password file for a user	internal password file for a user

=item Result of password change for <user> : <result>	=item Result of password change for <user> : <result>

A unix password change for <user> was attempted	A unix password change for <user> was attempted
and the pipe returned <result>	and the pipe returned <result>

Line 7346 lond has been asked to exit by its clien	Line 7992 lond has been asked to exit by its clien
client systemand <input> is the full exit command sent to the server.	client systemand <input> is the full exit command sent to the server.

=item Red CRITICAL: ABNORMAL EXIT. child <pid> for server <hostname> died through a crass with this error->[<message>].	=item Red CRITICAL: ABNORMAL EXIT. child <pid> for server <hostname> died through a crass with this error->[<message>].

A lond child terminated. NOte that this termination can also occur when the	A lond child terminated. NOte that this termination can also occur when the
child receives the QUIT or DIE signals. <pid> is the process id of the child,	child receives the QUIT or DIE signals. <pid> is the process id of the child,
<hostname> the host lond is working for, and <message> the reason the child died	<hostname> the host lond is working for, and <message> the reason the child died
Line 7430 file when sent it's USR1 signal. That p	Line 8076 file when sent it's USR1 signal. That p
assumed to be hung in some un-fixable way.	assumed to be hung in some un-fixable way.

=item Finished checking children	=item Finished checking children

Master processs's USR1 processing is cojmplete.	Master processs's USR1 processing is cojmplete.

=item (Red) CRITICAL: ------- Starting ------	=item (Red) CRITICAL: ------- Starting ------
Line 7444 Started a new child process for <client>	Line 8090 Started a new child process for <client>
connected to the child. This was as a result of a TCP/IP connection from a client.	connected to the child. This was as a result of a TCP/IP connection from a client.

=item Unable to determine who caller was, getpeername returned nothing	=item Unable to determine who caller was, getpeername returned nothing

In child process initialization. either getpeername returned undef or	In child process initialization. either getpeername returned undef or
a zero sized object was returned. Processing continues, but in my opinion,	a zero sized object was returned. Processing continues, but in my opinion,
this should be cause for the child to exit.	this should be cause for the child to exit.
Line 7455 In child process initialization. The pe	Line 8101 In child process initialization. The pe
The client address is stored as "Unavailable" and processing continues.	The client address is stored as "Unavailable" and processing continues.

=item (Yellow) INFO: Connection <ip> <name> connection type = <type>	=item (Yellow) INFO: Connection <ip> <name> connection type = <type>

In child initialization. A good connectionw as received from <ip>.	In child initialization. A good connectionw as received from <ip>.

=over 2	=over 2
Line 7505 The client (<client> is the peer's name	Line 8151 The client (<client> is the peer's name
negotiated an SSL connection with this child process.	negotiated an SSL connection with this child process.

=item (Green) Successful insecure authentication with <client>	=item (Green) Successful insecure authentication with <client>


The client has successfully negotiated an insecure connection withthe child process.	The client has successfully negotiated an insecure connection withthe child process.

Line 7519 string.	Line 8165 string.

=back	=back

	=back


=cut	=cut

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

Removed from v.1.409
changed lines
	Added in v.1.507