loncom/lond - diff

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Diff for /loncom/lond between versions 1.435 and 1.520

version 1.435, 2010/01/02 23:56:06	version 1.520, 2016/05/08 19:05:10
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;
	use Crypt::Eksblowfish::Bcrypt;
	use Digest::SHA;
	use Encode;

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 72 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 $clientversion; # LonCAPA version running on client.
	my $clienthomedom; # LonCAPA domain of homeID for client.
	# primary library server.

my $server;	my $server;

Line 89 my %managers; # Ip -> manager names	Line 96 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 124 my @passwderrors = ("ok",	Line 133 my @passwderrors = ("ok",
"pwchange_failure - lcpasswd Error filename is invalid");	"pwchange_failure - lcpasswd Error filename is invalid");


# The array below are lcuseradd error strings.:

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");


# This array are the errors from lcinstallfile:	# This array are the errors from lcinstallfile:

my @installerrors = ("ok",	my @installerrors = ("ok",
"Initial user id of client not that of www",	"Initial user id of client not that of www",
"Usage error, not enough command line arguments",	"Usage error, not enough command line arguments",
"Source file name does not exist",	"Source filename does not exist",
"Destination file name does not exist",	"Destination filename does not exist",
"Some file operation failed",	"Some file operation failed",
"Invalid table filename."	"Invalid table filename."
);	);
Line 418 sub ReadManagerTable {	Line 408 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 444 sub ReadManagerTable {	Line 437 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 506 sub AdjustHostContents {	Line 499 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 594 sub InstallFile {	Line 588 sub InstallFile {
#	#
# ConfigFileFromSelector: converts a configuration file selector	# ConfigFileFromSelector: converts a configuration file selector
# into a configuration file pathname.	# into a configuration file pathname.
# It's probably no longer necessary to preserve	# Supports the following file selectors:
# special handling of hosts or domain as those	# hosts, domain, dns_hosts, dns_domain
# files have been superceded by dns_hosts, dns_domain.
# The default action is just to prepend the directory
# and append .tab
#	#
#	#
# Parameters:	# Parameters:
Line 611 sub ConfigFileFromSelector {	Line 602 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."domain.tab";
} else {
$tablefile = $tabledir.$selector.'.tab';	$tablefile = $tabledir.$selector.'.tab';
}	}
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 637 sub ConfigFileFromSelector {	Line 624 sub ConfigFileFromSelector {
# String to send to client ("ok" or "refused" if bad file).	# String to send to client ("ok" or "refused" if bad file).
#	#
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");	&Debug("PushFile");

Line 645 sub PushFile {	Line 632 sub PushFile {
# 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 665 sub PushFile {	Line 654 sub PushFile {

if($filename eq "host") {	if($filename eq "host") {
$contents = AdjustHostContents($contents);	$contents = AdjustHostContents($contents);
	} elsif ($filename eq 'dns_host' \|\| $filename eq 'dns_domain') {
	if ($contents eq '') {
	&logthis('<font color="red"> Pushfile: unable to install '
	.$tablefile." - no data received from push. </font>");
	return 'error: push had no data';
	}
	if (&Apache::lonnet::get_host_ip($clientname)) {
	my $clienthost = &Apache::lonnet::hostname($clientname);
	if ($managers{$clientip} eq $clientname) {
	my $clientprotocol = $Apache::lonnet::protocol{$clientname};
	$clientprotocol = 'http' if ($clientprotocol ne 'https');
	my $url = '/adm/'.$filename;
	$url =~ s{_}{/};
	my $ua=new LWP::UserAgent;
	$ua->timeout(60);
	my $request=new HTTP::Request('GET',"$clientprotocol://$clienthost$url");
	my $response=$ua->request($request);
	if ($response->is_error()) {
	&logthis('<font color="red"> Pushfile: unable to install '
	.$tablefile." - error attempting to pull data. </font>");
	return 'error: pull failed';
	} else {
	my $result = $response->content;
	chomp($result);
	unless ($result eq $contents) {
	&logthis('<font color="red"> Pushfile: unable to install '
	.$tablefile." - pushed data and pulled data differ. </font>");
	my $pushleng = length($contents);
	my $pullleng = length($result);
	if ($pushleng != $pullleng) {
	return "error: $pushleng vs $pullleng bytes";
	} else {
	return "error: mismatch push and pull";
	}
	}
	}
	}
	}
}	}

# Install the new file:	# Install the new file:
Line 676 sub PushFile {	Line 703 sub PushFile {
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 976 sub read_profile {	Line 1023 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 1069 sub pong_handler {	Line 1119 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 1108 sub establish_key_handler {	Line 1158 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.	# $clientname - Global variable that carries the name of the host we're connected to.
# Returns:	# Returns:
# 1 - Ok to continue processing.	# 1 - Ok to continue processing.
# 0 - Program should exit.	# 0 - Program should exit.
Line 1117 sub establish_key_handler {	Line 1167 sub establish_key_handler {
sub load_handler {	sub load_handler {
my ($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 1145 sub load_handler {	Line 1197 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 1614 sub ls3_handler {	Line 1666 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 {	sub server_timezone_handler {
my ($cmd,$tail,$client) = @_;	my ($cmd,$tail,$client) = @_;
my $userinput = "$cmd:$tail";	my $userinput = "$cmd:$tail";
Line 1654 sub server_loncaparev_handler {	Line 1780 sub server_loncaparev_handler {
}	}
&register_handler("serverloncaparev", \&server_loncaparev_handler, 0, 1, 0);	&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 1763 sub authenticate_handler {	Line 1906 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", $userinput);
	}
#	#
# Bad credentials: Failed to authorize	# Bad credentials: Failed to authorize
#	#
Line 1843 sub change_password_handler {	Line 2016 sub change_password_handler {
my ($howpwd,$contentpwd)=split(/:/,$realpasswd);	my ($howpwd,$contentpwd)=split(/:/,$realpasswd);
if ($howpwd eq 'internal') {	if ($howpwd eq 'internal') {
&Debug("internal auth");	&Debug("internal auth");
my $salt=time;	my $ncpass = &hash_passwd($udom,$npass);
$salt=substr($salt,6,2);
my $ncpass=crypt($npass,$salt);
if(&rewrite_password_file($udom, $uname, "internal:$ncpass")) {	if(&rewrite_password_file($udom, $uname, "internal:$ncpass")) {
my $msg="Result of password change for $uname: pwchange_success";	my $msg="Result of password change for $uname: pwchange_success";
if ($lonhost) {	if ($lonhost) {
$msg .= " - request originated from: $lonhost";	$msg .= " - request originated from: $lonhost";
}	}
&logthis($msg);	&logthis($msg);
	&update_passwd_history($uname,$udom,$howpwd,$context);
&Reply($client, "ok\n", $userinput);	&Reply($client, "ok\n", $userinput);
} else {	} else {
&logthis("Unable to open $uname passwd "	&logthis("Unable to open $uname passwd "
Line 1860 sub change_password_handler {	Line 2032 sub change_password_handler {
}	}
} elsif ($howpwd eq 'unix' && $context ne 'reset_by_email') {	} elsif ($howpwd eq 'unix' && $context ne 'reset_by_email') {
my $result = &change_unix_password($uname, $npass);	my $result = &change_unix_password($uname, $npass);
	if ($result eq 'ok') {
	&update_passwd_history($uname,$udom,$howpwd,$context);
	}
&logthis("Result of password change for $uname: ".	&logthis("Result of password change for $uname: ".
$result);	$result);
&Reply($client, \$result, $userinput);	&Reply($client, \$result, $userinput);
Line 1882 sub change_password_handler {	Line 2057 sub change_password_handler {
}	}
&register_handler("passwd", \&change_password_handler, 1, 1, 0);	&register_handler("passwd", \&change_password_handler, 1, 1, 0);

	sub hash_passwd {
	my ($domain,$plainpass,@rest) = @_;
	my ($salt,$cost);
	if (@rest) {
	$cost = $rest[0];
	# salt is first 22 characters, base-64 encoded by bcrypt
	my $plainsalt = substr($rest[1],0,22);
	$salt = Crypt::Eksblowfish::Bcrypt::de_base64($plainsalt);
	} else {
	my $defaultcost;
	my %domconfig =
	&Apache::lonnet::get_dom('configuration',['password'],$domain);
	if (ref($domconfig{'password'}) eq 'HASH') {
	$defaultcost = $domconfig{'password'}{'cost'};
	}
	if (($defaultcost eq '') \|\| ($defaultcost =~ /D/)) {
	$cost = 10;
	} else {
	$cost = $defaultcost;
	}
	# Generate random 16-octet base64 salt
	$salt = "";
	$salt .= pack("C", int rand(256)) for 1..16;
	}
	my $hash = &Crypt::Eksblowfish::Bcrypt::bcrypt_hash({
	key_nul => 1,
	cost => $cost,
	salt => $salt,
	}, Digest::SHA::sha512(Encode::encode('UTF-8',$plainpass)));

	my $result = join("!", "", "bcrypt", sprintf("%02d",$cost),
	&Crypt::Eksblowfish::Bcrypt::en_base64($salt).
	&Crypt::Eksblowfish::Bcrypt::en_base64($hash));
	return $result;
	}

#	#
# Create a new user. User in this case means a lon-capa user.	# Create a new user. User in this case means a lon-capa user.
# The user must either already exist in some authentication realm	# The user must either already exist in some authentication realm
Line 1925 sub add_user_handler {	Line 2136 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,
	$passfilename,'makeuser');
&Reply($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 1986 sub change_authentication_handler {	Line 2198 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);
&logthis("Result of password change for $uname: ".$result);	&logthis("Result of password change for $uname: ".$result);
if ($result eq "ok") {	if ($result eq "ok") {
	&update_passwd_history($uname,$udom,$umode,'changeuserauth');
&Reply($client, \$result);	&Reply($client, \$result);
} else {	} else {
&Failure($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,'changeuserauth');
#	#
# 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 2028 sub change_authentication_handler {	Line 2234 sub change_authentication_handler {
}	}
&register_handler("changeuserauth", \&change_authentication_handler, 1,1, 0);	&register_handler("changeuserauth", \&change_authentication_handler, 1,1, 0);

	sub update_passwd_history {
	my ($uname,$udom,$umode,$context) = @_;
	my $proname=&propath($udom,$uname);
	my $now = time;
	if (open(my $fh,">>$proname/passwd.log")) {
	print $fh "$now:$umode:$context\n";
	close($fh);
	}
	return;
	}

#	#
# Determines if this is the home server for a user. The home server	# Determines if this is the home server for a user. The home server
# for a user will have his/her lon-capa passwd file. Therefore all we need	# for a user will have his/her lon-capa passwd file. Therefore all we need
Line 2109 sub update_resource_handler {	Line 2326 sub update_resource_handler {
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 2117 sub update_resource_handler {	Line 2337 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 2195 sub fetch_user_file_handler {	Line 2417 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: $destname");
alarm(120);	alarm(120);
Line 2217 sub fetch_user_file_handler {	Line 2442 sub fetch_user_file_handler {
unlink($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 2253 sub remove_user_file_handler {	Line 2496 sub remove_user_file_handler {
if (-e $file) {	if (-e $file) {
#	#
# If the file is a regular file unlink is fine...	# If the file is a regular file unlink is fine...
# However it's possible the client wants a dir.	# However it's possible the client wants a dir
# removed, in which case rmdir is more approprate:	# removed, in which case rmdir is more appropriate.
	# Note: rmdir will only remove an empty directory.
#	#
if (-f $file){	if (-f $file){
unlink($file);	unlink($file);
	# for html files remove the associated .bak file
	# which may have been created by the editor.
	if ($ufile =~ m{^((docs\|supplemental)/(?:\d+\|default)/\d+(?:\|/.+)/)[^/]+\.x?html?$}i) {
	my $path = $1;
	if (-e $file.'.bak') {
	unlink($file.'.bak');
	}
	}
} elsif(-d $file) {	} elsif(-d $file) {
rmdir($file);	rmdir($file);
}	}
Line 2371 sub user_has_session_handler {	Line 2623 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 2621 sub newput_user_profile_entry {	Line 2872 sub newput_user_profile_entry {
foreach my $pair (@pairs) {	foreach my $pair (@pairs) {
my ($key,$value)=split(/=/,$pair);	my ($key,$value)=split(/=/,$pair);
if (exists($hashref->{$key})) {	if (exists($hashref->{$key})) {
&Failure($client, "key_exists: ".$key."\n",$userinput);	if (!&untie_user_hash($hashref)) {
return 1;	&logthis("error: ".($!+0)." untie (GDBM) failed ".
	"while attempting newput - early out as key exists");
	}
	&Failure($client, "key_exists: ".$key."\n",$userinput);
	return 1;
}	}
}	}

Line 3024 sub get_profile_keys {	Line 3279 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 3090 sub dump_profile_database {	Line 3356 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.	# $client - Channel open on the client.
# Returns:	# Returns:
# 1 - Continue processing.	# 1 - Continue processing.
Line 3099 sub dump_profile_database {	Line 3368 sub dump_profile_database {
sub dump_with_regexp {	sub dump_with_regexp {
my ($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 ($namespace eq 'roles') {
if ($key =~ /^($LONCAPA::match_domain)_($LONCAPA::match_community)_(cc\|co\|in\|ta\|ep\|ad\|st\|cr)/) {
if ($clientversion =~ /^(\d+)\.(\d+)$/) {
my $major = $1;
my $minor = $2;
next if (($major < 2) \|\| (($major == 2) && ($minor < 9)));
}
}
}
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 3174 sub dump_with_regexp {	Line 3390 sub dump_with_regexp {
# namespace - Name of the database being modified	# namespace - Name of the database being modified
# rid - Resource keyword to modify.	# rid - Resource keyword to modify.
# what - new value associated with rid.	# what - new value associated with rid.
	# laststore - (optional) version=timestamp
	# for most recent transaction for rid
	# in namespace, when cstore was called
#	#
# $client - Socket open on the client.	# $client - Socket open on the client.
#	#
Line 3182 sub dump_with_regexp {	Line 3401 sub dump_with_regexp {
# 1 (keep on processing).	# 1 (keep on processing).
# Side-Effects:	# Side-Effects:
# Writes to the client	# Writes to the client
	# Successful storage will cause either 'ok', or, if $laststore was included
	# in the tail of the request, and the version number for the last transaction
	# is larger than the version in $laststore, delay:$numtrans , where $numtrans
	# is the number of store evevnts recorded for rid in namespace since
	# lonnet::store() was called by the client.
	#
sub store_handler {	sub store_handler {
my ($cmd, $tail, $client) = @_;	my ($cmd, $tail, $client) = @_;

my $userinput = "$cmd:$tail";	my $userinput = "$cmd:$tail";
	chomp($tail);
my ($udom,$uname,$namespace,$rid,$what) =split(/:/,$tail);	my ($udom,$uname,$namespace,$rid,$what,$laststore) =split(/:/,$tail);
if ($namespace ne 'roles') {	if ($namespace ne 'roles') {

chomp($what);
my @pairs=split(/\&/,$what);	my @pairs=split(/\&/,$what);
my $hashref = &tie_user_hash($udom, $uname, $namespace,	my $hashref = &tie_user_hash($udom, $uname, $namespace,
&GDBM_WRCREAT(), "S",	&GDBM_WRCREAT(), "S",
"$rid:$what");	"$rid:$what");
if ($hashref) {	if ($hashref) {
my $now = time;	my $now = time;
my @previouskeys=split(/&/,$hashref->{"keys:$rid"});	my $numtrans;
my $key;	if ($laststore) {
	my ($previousversion,$previoustime) = split(/\=/,$laststore);
	my ($lastversion,$lasttime) = (0,0);
	$lastversion = $hashref->{"version:$rid"};
	if ($lastversion) {
	$lasttime = $hashref->{"$lastversion:$rid:timestamp"};
	}
	if (($previousversion) && ($previousversion !~ /\D/)) {
	if (($lastversion > $previousversion) && ($lasttime >= $previoustime)) {
	$numtrans = $lastversion - $previousversion;
	}
	} elsif ($lastversion) {
	$numtrans = $lastversion;
	}
	if ($numtrans) {
	$numtrans =~ s/D//g;
	}
	}
$hashref->{"version:$rid"}++;	$hashref->{"version:$rid"}++;
my $version=$hashref->{"version:$rid"};	my $version=$hashref->{"version:$rid"};
my $allkeys='';	my $allkeys='';
Line 3211 sub store_handler {	Line 3452 sub store_handler {
$allkeys.='timestamp';	$allkeys.='timestamp';
$hashref->{"$version:keys:$rid"}=$allkeys;	$hashref->{"$version:keys:$rid"}=$allkeys;
if (&untie_user_hash($hashref)) {	if (&untie_user_hash($hashref)) {
&Reply($client, "ok\n", $userinput);	my $msg = 'ok';
	if ($numtrans) {
	$msg = 'delay:'.$numtrans;
	}
	&Reply($client, "$msg\n", $userinput);
} else {	} else {
&Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".	&Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
"while attempting store\n", $userinput);	"while attempting store\n", $userinput);
Line 3726 sub put_course_id_hash_handler {	Line 3971 sub put_course_id_hash_handler {
# createdafter - include courses for which creation date followed this date.	# createdafter - include courses for which creation date followed this date.
# creationcontext - include courses created in specified context	# 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:
# 1 - Continue processing.	# 1 - Continue processing.
Line 3733 sub put_course_id_hash_handler {	Line 3983 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,
$caller,$cloner,$cc_clone_list,$cloneonly,$createdbefore,$createdafter,	$caller,$cloner,$cc_clone_list,$cloneonly,$createdbefore,$createdafter,
$creationcontext) =split(/:/,$tail);	$creationcontext,$domcloner,$hasuniquecode) =split(/:/,$tail);
my $now = time;	my $now = time;
my ($cloneruname,$clonerudom,%cc_clone);	my ($cloneruname,$clonerudom,%cc_clone);
if (defined($description)) {	if (defined($description)) {
Line 3811 sub dump_course_id_handler {	Line 4072 sub dump_course_id_handler {
} else {	} else {
$creationcontext = '.';	$creationcontext = '.';
}	}
	unless ($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;	$unpack = 0;
}	}
Line 3842 sub dump_course_id_handler {	Line 4105 sub dump_course_id_handler {
next if ($since > 1);	next if ($since > 1);
}	}
$is_hash = 1;	$is_hash = 1;
if (defined($clonerudom)) {	if ($domcloner) {
	$canclone = 1;
	} elsif (defined($clonerudom)) {
if ($items->{'cloners'}) {	if ($items->{'cloners'}) {
my @cloneable = split(',',$items->{'cloners'});	my @cloneable = split(',',$items->{'cloners'});
if (@cloneable) {	if (@cloneable) {
Line 3870 sub dump_course_id_handler {	Line 4135 sub dump_course_id_handler {
$items->{'cloners'} = $cloneruname.':'.$clonerudom;	$items->{'cloners'} = $cloneruname.':'.$clonerudom;
$valchange = 1;	$valchange = 1;
}	}
	unless ($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) {
Line 3885 sub dump_course_id_handler {	Line 4163 sub dump_course_id_handler {
$selfenroll_end = $items->{'selfenroll_end_date'};	$selfenroll_end = $items->{'selfenroll_end_date'};
$created = $items->{'created'};	$created = $items->{'created'};
$context = $items->{'context'};	$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)) {
Line 4070 sub dump_course_id_handler {	Line 4351 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 4113 sub put_domain_handler {	Line 4441 sub put_domain_handler {
}	}
&register_handler("putdom", \&put_domain_handler, 0, 1, 0);	&register_handler("putdom", \&put_domain_handler, 0, 1, 0);

	# Updates one or more entries in clickers.db file at the domain level
	#
	# Parameters:
	# $cmd - The command that got us here.
	# $tail - Tail of the command (remaining parameters).
	# In this case a colon separated list containing:
	# (a) the domain for which we are updating the entries,
	# (b) the action required -- add or del -- and
	# (c) a &-separated list of entries to add or delete.
	# $client - File descriptor connected to client.
	# Returns
	# 1 - Continue processing.
	# 0 - Requested to exit, caller should shut down.
	# Side effects:
	# reply is written to $client.
	#


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

	my $userinput = "$cmd:$tail";
	my ($udom,$action,$what) =split(/:/,$tail,3);
	chomp($what);

	my $hashref = &tie_domain_hash($udom, "clickers", &GDBM_WRCREAT(),
	"U","$action:$what");

	if (!$hashref) {
	&Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
	"while attempting updateclickers\n", $userinput);
	return 1;
	}

	my @pairs=split(/\&/,$what);
	foreach my $pair (@pairs) {
	my ($key,$value)=split(/=/,$pair);
	if ($action eq 'add') {
	if (exists($hashref->{$key})) {
	my @newvals = split(/,/,&unescape($value));
	my @currvals = split(/,/,&unescape($hashref->{$key}));
	my @merged = sort(keys(%{{map { $_ => 1 } (@newvals,@currvals)}}));
	$hashref->{$key}=&escape(join(',',@merged));
	} else {
	$hashref->{$key}=$value;
	}
	} elsif ($action eq 'del') {
	if (exists($hashref->{$key})) {
	my %current;
	map { $current{$_} = 1; } split(/,/,&unescape($hashref->{$key}));
	map { delete($current{$_}); } split(/,/,&unescape($value));
	if (keys(%current)) {
	$hashref->{$key}=&escape(join(',',sort(keys(%current))));
	} else {
	delete($hashref->{$key});
	}
	}
	}
	}
	if (&untie_user_hash($hashref)) {
	&Reply( $client, "ok\n", $userinput);
	} else {
	&Failure($client, "error: ".($!+0)." untie(GDBM) failed ".
	"while attempting put\n",
	$userinput);
	}
	return 1;
	}
	&register_handler("updateclickers", \&update_clickers, 0, 1, 0);


	# Deletes one or more entries in a namespace db file at the domain level
	#
	# Parameters:
	# $cmd - The command that got us here.
	# $tail - Tail of the command (remaining parameters).
	# In this case a colon separated list containing:
	# (a) the domain for which we are deleting the entries,
	# (b) &-separated list of keys to delete.
	# $client - File descriptor connected to client.
	# Returns
	# 1 - Continue processing.
	# 0 - Requested to exit, caller should shut down.
	# Side effects:
	# reply is written to $client.
	#

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

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

	my ($udom,$namespace,$what)=split(/:/,$tail,3);
	chomp($what);
	my $hashref = &tie_domain_hash($udom,$namespace,&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 deldom\n", $userinput);
	}
	} else {
	&Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
	"while attempting deldom\n", $userinput);
	}
	return 1;
	}
	&register_handler("deldom", \&del_domain_handler, 0, 1, 0);


# Unencrypted get from the namespace database file at the domain level.	# Unencrypted get from the namespace database file at the domain level.
# This function retrieves a keyed item from a specific named database in the	# This function retrieves a keyed item from a specific named database in the
# domain directory.	# domain directory.
Line 4135 sub put_domain_handler {	Line 4579 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 4259 sub get_id_handler {	Line 4704 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 4279 sub get_id_handler {	Line 4767 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 4543 sub tmp_put_handler {	Line 5032 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 4806 sub validate_instcode_handler {	Line 5295 sub validate_instcode_handler {
my ($dom,$instcode,$owner) = split(/:/, $tail);	my ($dom,$instcode,$owner) = split(/:/, $tail);
$instcode = &unescape($instcode);	$instcode = &unescape($instcode);
$owner = &unescape($owner);	$owner = &unescape($owner);
my ($outcome,$description) =	my ($outcome,$description,$credits) =
&localenroll::validate_instcode($dom,$instcode,$owner);	&localenroll::validate_instcode($dom,$instcode,$owner);
my $result = &escape($outcome).'&'.&escape($description);	my $result = &escape($outcome).'&'.&escape($description).'&'.
	&escape($credits);
&Reply($client, \$result, $userinput);	&Reply($client, \$result, $userinput);

return 1;	return 1;
Line 4861 sub get_sections_handler {	Line 5351 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 5023 sub crsreq_checks_handler {	Line 5514 sub crsreq_checks_handler {
my $userinput = "$cmd:$tail";	my $userinput = "$cmd:$tail";
my $dom = $tail;	my $dom = $tail;
my $result;	my $result;
my @reqtypes = ('official','unofficial','community');	my @reqtypes = ('official','unofficial','community','textbook','placement');
eval {	eval {
local($SIG{__DIE__})='DEFAULT';	local($SIG{__DIE__})='DEFAULT';
my %validations;	my %validations;
Line 5050 sub crsreq_checks_handler {	Line 5541 sub crsreq_checks_handler {
sub validate_crsreq_handler {	sub validate_crsreq_handler {
my ($cmd, $tail, $client) = @_;	my ($cmd, $tail, $client) = @_;
my $userinput = "$cmd:$tail";	my $userinput = "$cmd:$tail";
my ($dom,$owner,$crstype,$inststatuslist,$instcode,$instseclist) = split(/:/, $tail);	my ($dom,$owner,$crstype,$inststatuslist,$instcode,$instseclist,$customdata) = split(/:/, $tail);
$instcode = &unescape($instcode);	$instcode = &unescape($instcode);
$owner = &unescape($owner);	$owner = &unescape($owner);
$crstype = &unescape($crstype);	$crstype = &unescape($crstype);
$inststatuslist = &unescape($inststatuslist);	$inststatuslist = &unescape($inststatuslist);
$instcode = &unescape($instcode);	$instcode = &unescape($instcode);
$instseclist = &unescape($instseclist);	$instseclist = &unescape($instseclist);
	my $custominfo = &Apache::lonnet::thaw_unescape($customdata);
my $outcome;	my $outcome;
eval {	eval {
local($SIG{__DIE__})='DEFAULT';	local($SIG{__DIE__})='DEFAULT';
$outcome = &localenroll::validate_crsreq($dom,$owner,$crstype,	$outcome = &localenroll::validate_crsreq($dom,$owner,$crstype,
$inststatuslist,$instcode,	$inststatuslist,$instcode,
$instseclist);	$instseclist,$custominfo);
};	};
if (!$@) {	if (!$@) {
&Reply($client, \$outcome, $userinput);	&Reply($client, \$outcome, $userinput);
Line 5073 sub validate_crsreq_handler {	Line 5565 sub validate_crsreq_handler {
}	}
&register_handler("autocrsreqvalidation", \&validate_crsreq_handler, 0, 1, 0);	&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,
	$accessstart,$accessend,$infohashref) =
	split(/:/, $tail);
	$crstype = &unescape($crstype);
	$action = &unescape($action);
	$ownername = &unescape($ownername);
	$ownerdomain = &unescape($ownerdomain);
	$fullname = &unescape($fullname);
	$title = &unescape($title);
	$code = &unescape($code);
	$accessstart = &unescape($accessstart);
	$accessend = &unescape($accessend);
	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,$accessstart,$accessend,
	$incoming,\%rtnhash);
	if ($outcome eq 'ok') {
	my @posskeys = qw(createdweb createdmsg createdcustomized createdactions queuedweb queuedmsg formitems reviewweb validationjs onload javascript);
	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 5780 sub lcpasswdstrerror {	Line 6319 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 5852 if (-e $pidfile) {	Line 6379 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 5915 sub HUPSMAN { # sig	Line 6442 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 6028 sub Debug {	Line 6559 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 ($$reply must not contain any \n in this case).
	#If $reply is a string the caller has to ensure this.
sub Reply {	sub Reply {
my ($fd, $reply, $request) = @_;	my ($fd, $reply, $request) = @_;
if (ref($reply)) {	if (ref($reply)) {
Line 6090 sub logstatus {	Line 6624 sub logstatus {
sub initnewstatus {	sub initnewstatus {
my $docdir=$perlvar{'lonDocRoot'};	my $docdir=$perlvar{'lonDocRoot'};
my $fh=IO::File->new(">$docdir/lon-status/londstatus.txt");	my $fh=IO::File->new(">$docdir/lon-status/londstatus.txt");
my $now=time;	my $now=time();
my $local=localtime($now);	my $local=localtime($now);
print $fh "LOND status $local - parent $$\n\n";	print $fh "LOND status $local - parent $$\n\n";
opendir(DIR,"$docdir/lon-status/londchld");	opendir(DIR,"$docdir/lon-status/londchld");
Line 6179 $SIG{USR2} = \&UpdateHosts;	Line 6713 $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);

my $dist=`$perlvar{'lonDaemons'}/distprobe`;	$dist=`$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 6239 sub make_new_child {	Line 6781 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 6247 sub make_new_child {	Line 6790 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 6257 sub make_new_child {	Line 6807 sub make_new_child {
# my $tmpsnum=0; # Now global	# my $tmpsnum=0; # Now global
#---------------------------------------------------- kerberos 5 initialization	#---------------------------------------------------- kerberos 5 initialization
&Authen::Krb5::init_context();	&Authen::Krb5::init_context();
unless (($dist eq 'fedora5') \|\| ($dist eq 'fedora4') \|\|
($dist eq 'fedora6') \|\| ($dist eq 'suse9.3')) {	my $no_ets;
	if ($dist =~ /^(?:centos\|rhes\|scientific)(\d+)$/) {
	if ($1 >= 7) {
	$no_ets = 1;
	}
	} elsif ($dist =~ /^suse(\d+\.\d+)$/) {
	if (($1 eq '9.3') \|\| ($1 >= 12.2)) {
	$no_ets = 1;
	}
	} elsif ($dist =~ /^sles(\d+)$/) {
	if ($1 > 11) {
	$no_ets = 1;
	}
	} elsif ($dist =~ /^fedora(\d+)$/) {
	if ($1 < 7) {
	$no_ets = 1;
	}
	}
	unless ($no_ets) {
&Authen::Krb5::init_ets();	&Authen::Krb5::init_ets();
}	}

Line 6304 sub make_new_child {	Line 6872 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, my $inittype, $clientversion) = split(/:/, $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 6331 sub make_new_child {	Line 6905 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 6395 sub make_new_child {	Line 6969 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 6444 sub is_author {	Line 7021 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 6469 sub is_author {	Line 7053 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 6553 sub rewrite_password_file {	Line 7136 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, $user ) \n");
Line 6630 sub validate_user {	Line 7211 sub validate_user {
}	}
if ($howpwd ne 'nouser') {	if ($howpwd ne 'nouser') {
if($howpwd eq "internal") { # Encrypted is in local password file.	if($howpwd eq "internal") { # Encrypted is in local password file.
$validated = (crypt($password, $contentpwd) eq $contentpwd);	if (length($contentpwd) == 13) {
	$validated = (crypt($password,$contentpwd) eq $contentpwd);
	if ($validated) {
	my $ncpass = &hash_passwd($domain,$password);
	if (&rewrite_password_file($domain,$user,"$howpwd:$ncpass")) {
	&update_passwd_history($user,$domain,$howpwd,'conversion');
	&logthis("Validated password hashed with bcrypt for $user:$domain");
	}
	}
	} else {
	$validated = &check_internal_passwd($password,$contentpwd,$domain);
	}
}	}
elsif ($howpwd eq "unix") { # User is a normal unix user.	elsif ($howpwd eq "unix") { # User is a normal unix user.
$contentpwd = (getpwnam($user))[1];	$contentpwd = (getpwnam($user))[1];
Line 6650 sub validate_user {	Line 7242 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 6728 sub validate_user {	Line 7290 sub validate_user {
return $validated;	return $validated;
}	}

	sub check_internal_passwd {
	my ($plainpass,$stored,$domain) = @_;
	my (undef,$method,@rest) = split(/!/,$stored);
	if ($method eq "bcrypt") {
	my $result = &hash_passwd($domain,$plainpass,@rest);
	if ($result ne $stored) {
	return 0;
	}
	# Upgrade to a larger number of rounds if necessary
	my $defaultcost;
	my %domconfig =
	&Apache::lonnet::get_dom('configuration',['password'],$domain);
	if (ref($domconfig{'password'}) eq 'HASH') {
	$defaultcost = $domconfig{'password'}{'cost'};
	}
	if (($defaultcost eq '') \|\| ($defaultcost =~ /D/)) {
	$defaultcost = 10;
	}
	return 1 unless($rest[0]<$defaultcost);
	}
	return 0;
	}

	sub get_last_authchg {
	my ($domain,$user) = @_;
	my $lastmod;
	my $logname = &propath($domain,$user).'/passwd.log';
	if (-e "$logname") {
	$lastmod = (stat("$logname"))[9];
	}
	return $lastmod;
	}

	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 6940 sub subscribe {	Line 7594 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 6982 sub change_unix_password {	Line 7638 sub change_unix_password {


sub make_passwd_file {	sub make_passwd_file {
my ($uname, $umode,$npass,$passfilename)=@_;	my ($uname,$udom,$umode,$npass,$passfilename,$action)=@_;
my $result="ok";	my $result="ok";
if ($umode eq 'krb4' or $umode eq 'krb5') {	if ($umode eq 'krb4' or $umode eq 'krb5') {
{	{
my $pf = IO::File->new(">$passfilename");	my $pf = IO::File->new(">$passfilename");
if ($pf) {	if ($pf) {
print $pf "$umode:$npass\n";	print $pf "$umode:$npass\n";
	&update_passwd_history($uname,$udom,$umode,$action);
} else {	} else {
$result = "pass_file_failed_error";	$result = "pass_file_failed_error";
}	}
}	}
} elsif ($umode eq 'internal') {	} elsif ($umode eq 'internal') {
my $salt=time;	my $ncpass = &hash_passwd($udom,$npass);
$salt=substr($salt,6,2);
my $ncpass=crypt($npass,$salt);
{	{
&Debug("Creating internal auth");	&Debug("Creating internal auth");
my $pf = IO::File->new(">$passfilename");	my $pf = IO::File->new(">$passfilename");
if($pf) {	if($pf) {
print $pf "internal:$ncpass\n";	print $pf "internal:$ncpass\n";
	&update_passwd_history($uname,$udom,$umode,$action);
} else {	} else {
$result = "pass_file_failed_error";	$result = "pass_file_failed_error";
}	}
Line 7016 sub make_passwd_file {	Line 7672 sub make_passwd_file {
}	}
}	}
} elsif ($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("> $passfilename");
Line 7098 sub sethost {	Line 7707 sub sethost {
eq &Apache::lonnet::get_host_ip($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");	$perlvar{'lonHostID'}." refusing connection");
Line 7113 sub version {	Line 7722 sub version {
return "version:$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 7293 Allow for a password to be set.	Line 7923 Allow for a password to be set.

Make a user.	Make a user.

=item passwd	=item changeuserauth

Allow for authentication mechanism and password to be changed.	Allow for authentication mechanism and password to be changed.

Line 7321 Place in B<logs/lond.log>	Line 7951 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 7382 for each student, defined perhaps by the	Line 8012 for each student, defined perhaps by the
Returns usernames corresponding to IDs. (These "IDs" are unique identifiers	Returns usernames corresponding to IDs. (These "IDs" are unique identifiers
for each student, defined perhaps by the institutional Registrar.)	for each student, defined perhaps by the institutional Registrar.)

	=item iddel

	Deletes one or more ids in a domain's id database.

=item tmpput	=item tmpput

Accept and store information in temporary space.	Accept and store information in temporary space.
Line 7438 Authen::Krb5	Line 8072 Authen::Krb5

=head1 COREQUISITES	=head1 COREQUISITES

	none

=head1 OSNAMES	=head1 OSNAMES

linux	linux
Line 7525 or the CA's certificate in the call to l	Line 8161 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 7646 Could not rewrite the	Line 8282 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 7675 lond has been asked to exit by its clien	Line 8311 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 7759 file when sent it's USR1 signal. That p	Line 8395 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 7773 Started a new child process for <client>	Line 8409 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 7784 In child process initialization. The pe	Line 8420 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 7834 The client (<client> is the peer's name	Line 8470 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 7848 string.	Line 8484 string.

=back	=back

	=back


=cut	=cut

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

Removed from v.1.435
changed lines
	Added in v.1.520