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Diff for /loncom/lond between versions 1.489.2.43.2.4 and 1.574

version 1.489.2.43.2.4, 2022/02/25 10:00:00	version 1.574, 2022/02/25 09:38:47
Line 35 use LONCAPA;	Line 35 use LONCAPA;
use LONCAPA::Configuration;	use LONCAPA::Configuration;
use LONCAPA::Lond;	use LONCAPA::Lond;

	use Socket;
use IO::Socket;	use IO::Socket;
use IO::File;	use IO::File;
#use Apache::File;	#use Apache::File;
use POSIX;	use POSIX;
use Crypt::IDEA;	use Crypt::IDEA;
use LWP::UserAgent();	use HTTP::Request;
use Digest::MD5 qw(md5_hex);	use Digest::MD5 qw(md5_hex);
use GDBM_File;	use GDBM_File;
use Authen::Krb5;	use Authen::Krb5;
Line 57 use Mail::Send;	Line 58 use Mail::Send;
use Crypt::Eksblowfish::Bcrypt;	use Crypt::Eksblowfish::Bcrypt;
use Digest::SHA;	use Digest::SHA;
use Encode;	use Encode;
	use LONCAPA::LWPReq;

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

Line 73 my $clientip; # IP address of client.	Line 75 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.	my $clienthomedom; # LonCAPA domain of homeID for client.
# primary library server.	my $clientintdom; # LonCAPA "internet domain" for client.
	my $clientsamedom; # LonCAPA domain same for this host
	# and client.
	my $clientsameinst; # LonCAPA "internet domain" same for
	# this host and client.
	my $clientremoteok; # Current domain permits hosting on client
	# (not set if host and client share "internet domain").
	# Values are 0 or 1; 1 if allowed.
	my %clientprohibited; # Commands from client prohibited for domain's
	# users.

my $server;	my $server;

Line 95 my %managers; # Ip -> manager names	Line 106 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 %secureconf; # Will have requirements for security
	# of lond connections

	my %crlchecked; # Will contain clients for which the client's SSL
	# has been checked against the cluster's Certificate
	# Revocation List.

my $dist;	my $dist;

#	#
Line 144 my @installerrors = ("ok",	Line 162 my @installerrors = ("ok",
);	);

#	#
	# The %trust hash classifies commands according to type of trust
	# required for execution of the command.
	#
	# When clients from a different institution request execution of a
	# particular command, the trust settings for that institution set
	# for this domain (or default domain for a multi-domain server) will
	# be checked to see if running the command is allowed.
	#
	# Trust types which depend on the "Trust" domain configuration
	# for the machine's default domain are:
	#
	# content ("Access to this domain's content by others")
	# shared ("Access to other domain's content by this domain")
	# enroll ("Enrollment in this domain's courses by others")
	# coaurem ("Co-author roles for this domain's users elsewhere")
	# othcoau ("Co-author roles in this domain for others")
	# domroles ("Domain roles in this domain assignable to others")
	# catalog ("Course Catalog for this domain displayed elsewhere")
	# reqcrs ("Requests for creation of courses in this domain by others")
	# msg ("Users in other domains can send messages to this domain")
	#
	# Trust type which depends on the User Session Hosting (remote)
	# domain configuration for machine's default domain is: "remote".
	#
	# Trust types which depend on contents of manager.tab in
	# /home/httpd/lonTabs is: "manageronly".
	#
	# Trust type which requires client to share the same LON-CAPA
	# "internet domain" (i.e., same institution as this server) is:
	# "institutiononly".
	#

	my %trust = (
	auth => {remote => 1},
	autocreatepassword => {remote => 1},
	autocrsreqchecks => {remote => 1, reqcrs => 1},
	autocrsrequpdate => {remote => 1},
	autocrsreqvalidation => {remote => 1},
	autogetsections => {remote => 1},
	autoinstcodedefaults => {remote => 1, catalog => 1},
	autoinstcodeformat => {remote => 1, catalog => 1},
	autonewcourse => {remote => 1, reqcrs => 1},
	autophotocheck => {remote => 1, enroll => 1},
	autophotochoice => {remote => 1},
	autophotopermission => {remote => 1, enroll => 1},
	autopossibleinstcodes => {remote => 1, reqcrs => 1},
	autoretrieve => {remote => 1, enroll => 1, catalog => 1},
	autorun => {remote => 1, enroll => 1, reqcrs => 1},
	autovalidateclass_sec => {catalog => 1},
	autovalidatecourse => {remote => 1, enroll => 1},
	autovalidateinstcode => {domroles => 1, remote => 1, enroll => 1},
	autovalidateinstcrosslist => {remote => 1, enroll => 1},
	autoinstsecreformat => {remote => 1, enroll => 1},
	changeuserauth => {remote => 1, domroles => 1},
	chatretr => {remote => 1, enroll => 1},
	chatsend => {remote => 1, enroll => 1},
	courseiddump => {remote => 1, domroles => 1, enroll => 1},
	courseidput => {remote => 1, domroles => 1, enroll => 1},
	courseidputhash => {remote => 1, domroles => 1, enroll => 1},
	courselastaccess => {remote => 1, domroles => 1, enroll => 1},
	coursesessions => {institutiononly => 1},
	currentauth => {remote => 1, domroles => 1, enroll => 1},
	currentdump => {remote => 1, enroll => 1},
	currentversion => {remote=> 1, content => 1},
	dcmaildump => {remote => 1, domroles => 1},
	dcmailput => {remote => 1, domroles => 1},
	del => {remote => 1, domroles => 1, enroll => 1, content => 1},
	delbalcookie => {institutiononly => 1},
	delusersession => {institutiononly => 1},
	deldom => {remote => 1, domroles => 1}, # not currently used
	devalidatecache => {institutiononly => 1},
	domroleput => {remote => 1, enroll => 1},
	domrolesdump => {remote => 1, catalog => 1},
	du => {remote => 1, enroll => 1},
	du2 => {remote => 1, enroll => 1},
	dump => {remote => 1, enroll => 1, domroles => 1},
	edit => {institutiononly => 1}, #not used currently
	edump => {remote => 1, enroll => 1, domroles => 1},
	eget => {remote => 1, domroles => 1, enroll => 1}, #not used currently
	egetdom => {remote => 1, domroles => 1, enroll => 1, },
	ekey => {anywhere => 1},
	exit => {anywhere => 1},
	fetchuserfile => {remote => 1, enroll => 1},
	get => {remote => 1, domroles => 1, enroll => 1},
	getdom => {anywhere => 1},
	home => {anywhere => 1},
	iddel => {remote => 1, enroll => 1},
	idget => {remote => 1, enroll => 1},
	idput => {remote => 1, domroles => 1, enroll => 1},
	inc => {remote => 1, enroll => 1},
	init => {anywhere => 1},
	inst_usertypes => {remote => 1, domroles => 1, enroll => 1},
	instemailrules => {remote => 1, domroles => 1},
	instidrulecheck => {remote => 1, domroles => 1,},
	instidrules => {remote => 1, domroles => 1,},
	instrulecheck => {remote => 1, enroll => 1, reqcrs => 1, domroles => 1},
	instselfcreatecheck => {institutiononly => 1},
	instuserrules => {remote => 1, enroll => 1, reqcrs => 1, domroles => 1},
	keys => {remote => 1,},
	load => {anywhere => 1},
	log => {anywhere => 1},
	ls => {remote => 1, enroll => 1, content => 1,},
	ls2 => {remote => 1, enroll => 1, content => 1,},
	ls3 => {remote => 1, enroll => 1, content => 1,},
	lti => {institutiononly => 1},
	makeuser => {remote => 1, enroll => 1, domroles => 1,},
	mkdiruserfile => {remote => 1, enroll => 1,},
	newput => {remote => 1, enroll => 1, reqcrs => 1, domroles => 1,},
	passwd => {remote => 1},
	ping => {anywhere => 1},
	pong => {anywhere => 1},
	pushfile => {manageronly => 1},
	put => {remote => 1, enroll => 1, domroles => 1, msg => 1, content => 1, shared => 1},
	putdom => {remote => 1, domroles => 1,},
	putstore => {remote => 1, enroll => 1},
	queryreply => {anywhere => 1},
	querysend => {anywhere => 1},
	querysend_activitylog => {remote => 1},
	querysend_allusers => {remote => 1, domroles => 1},
	querysend_courselog => {remote => 1},
	querysend_fetchenrollment => {remote => 1},
	querysend_getinstuser => {remote => 1},
	querysend_getmultinstusers => {remote => 1},
	querysend_instdirsearch => {remote => 1, domroles => 1, coaurem => 1},
	querysend_institutionalphotos => {remote => 1},
	querysend_portfolio_metadata => {remote => 1, content => 1},
	querysend_userlog => {remote => 1, domroles => 1},
	querysend_usersearch => {remote => 1, enroll => 1, coaurem => 1},
	quit => {anywhere => 1},
	readlonnetglobal => {institutiononly => 1},
	reinit => {manageronly => 1}, #not used currently
	removeuserfile => {remote => 1, enroll => 1},
	renameuserfile => {remote => 1,},
	restore => {remote => 1, enroll => 1, reqcrs => 1,},
	rolesdel => {remote => 1, enroll => 1, domroles => 1, coaurem => 1},
	rolesput => {remote => 1, enroll => 1, domroles => 1, coaurem => 1},
	servercerts => {institutiononly => 1},
	serverdistarch => {anywhere => 1},
	serverhomeID => {anywhere => 1},
	serverloncaparev => {anywhere => 1},
	servertimezone => {remote => 1, enroll => 1},
	setannounce => {remote => 1, domroles => 1},
	sethost => {anywhere => 1},
	store => {remote => 1, enroll => 1, reqcrs => 1,},
	studentphoto => {remote => 1, enroll => 1},
	sub => {content => 1,},
	tmpdel => {institutiononly => 1},
	tmpget => {institutiononly => 1},
	tmpput => {remote => 1, othcoau => 1},
	tokenauthuserfile => {anywhere => 1},
	unsub => {content => 1,},
	update => {shared => 1},
	updatebalcookie => {institutiononly => 1},
	updateclickers => {remote => 1},
	userhassession => {anywhere => 1},
	userload => {anywhere => 1},
	version => {anywhere => 1}, #not used
	);

	#
# Statistics that are maintained and dislayed in the status line.	# Statistics that are maintained and dislayed in the status line.
#	#
my $Transactions = 0; # Number of attempted transactions.	my $Transactions = 0; # Number of attempted transactions.
Line 256 sub SSLConnection {	Line 434 sub SSLConnection {
Debug("Approving promotion -> ssl");	Debug("Approving promotion -> ssl");
# And do so:	# And do so:

	my $CRLFile;
	unless ($crlchecked{$clientname}) {
	$CRLFile = lonssl::CRLFile();
	$crlchecked{$clientname} = 1;
	}

my $SSLSocket = lonssl::PromoteServerSocket($Socket,	my $SSLSocket = lonssl::PromoteServerSocket($Socket,
$CACertificate,	$CACertificate,
$Certificate,	$Certificate,
$KeyFile);	$KeyFile,
	$clientname,
	$CRLFile,
	$clientversion);
if(! ($SSLSocket) ) { # SSL socket promotion failed.	if(! ($SSLSocket) ) { # SSL socket promotion failed.
my $err = lonssl::LastError();	my $err = lonssl::LastError();
&logthis("<font color=\"red\"> CRITICAL "	&logthis("<font color=\"red\"> CRITICAL "
Line 299 sub InsecureConnection {	Line 486 sub InsecureConnection {
my $Socket = shift;	my $Socket = shift;

# Don't even start if insecure connections are not allowed.	# Don't even start if insecure connections are not allowed.
	# return 0 if Insecure connections not allowed.
if(! $perlvar{londAllowInsecure}) { # Insecure connections not allowed.	#
	if (ref($secureconf{'connfrom'}) eq 'HASH') {
	if ($clientsamedom) {
	if ($secureconf{'connfrom'}{'dom'} eq 'req') {
	return 0;
	}
	} elsif ($clientsameinst) {
	if ($secureconf{'connfrom'}{'intdom'} eq 'req') {
	return 0;
	}
	} else {
	if ($secureconf{'connfrom'}{'other'} eq 'req') {
	return 0;
	}
	}
	} elsif (!$perlvar{londAllowInsecure}) {
return 0;	return 0;
}	}

Line 600 sub ConfigFileFromSelector {	Line 802 sub ConfigFileFromSelector {
my $selector = shift;	my $selector = shift;
my $tablefile;	my $tablefile;

my $tabledir = $perlvar{'lonTabDir'}.'/';	if ($selector eq 'loncapaCAcrl') {
if (($selector eq "hosts") \|\| ($selector eq "domain") \|\|	my $tabledir = $perlvar{'lonCertificateDirectory'};
($selector eq "dns_hosts") \|\| ($selector eq "dns_domain")) {	if (-d $tabledir) {
$tablefile = $tabledir.$selector.'.tab';	$tablefile = $tabledir.'/'.$selector.'.pem';
	}
	} else {
	my $tabledir = $perlvar{'lonTabDir'}.'/';
	if (($selector eq "hosts") \|\| ($selector eq "domain") \|\|
	($selector eq "dns_hosts") \|\| ($selector eq "dns_domain")) {
	$tablefile = $tabledir.$selector.'.tab';
	}
}	}
return $tablefile;	return $tablefile;
}	}
Line 627 sub PushFile {	Line 836 sub PushFile {
my ($command, $filename, $contents) = split(":", $request, 3);	my ($command, $filename, $contents) = split(":", $request, 3);
&Debug("PushFile");	&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 and
# supported:	# CRL file are supported:
# hosts.tab ($filename eq host).	# hosts.tab ($filename eq host).
# domain.tab ($filename eq domain).	# domain.tab ($filename eq domain).
# dns_hosts.tab ($filename eq dns_host).	# dns_hosts.tab ($filename eq dns_host).
# dns_domain.tab ($filename eq dns_domain).	# dns_domain.tab ($filename eq dns_domain).
	# loncapaCAcrl.pem ($filename eq loncapaCAcrl).
# 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 653 sub PushFile {	Line 863 sub PushFile {

if($filename eq "host") {	if($filename eq "host") {
$contents = AdjustHostContents($contents);	$contents = AdjustHostContents($contents);
} elsif ($filename eq 'dns_host' \|\| $filename eq 'dns_domain') {	} elsif (($filename eq 'dns_host') \|\| ($filename eq 'dns_domain') \|\|
	($filename eq 'loncapaCAcrl')) {
if ($contents eq '') {	if ($contents eq '') {
&logthis('<font color="red"> Pushfile: unable to install '	&logthis('<font color="red"> Pushfile: unable to install '
.$tablefile." - no data received from push. </font>");	.$tablefile." - no data received from push. </font>");
Line 664 sub PushFile {	Line 875 sub PushFile {
if ($managers{$clientip} eq $clientname) {	if ($managers{$clientip} eq $clientname) {
my $clientprotocol = $Apache::lonnet::protocol{$clientname};	my $clientprotocol = $Apache::lonnet::protocol{$clientname};
$clientprotocol = 'http' if ($clientprotocol ne 'https');	$clientprotocol = 'http' if ($clientprotocol ne 'https');
my $url = '/adm/'.$filename;	my $url;
$url =~ s{_}{/};	if ($filename eq 'loncapaCAcrl') {
my $ua=new LWP::UserAgent;	$url = '/adm/dns/loncapaCRL';
$ua->timeout(60);	} else {
	$url = '/adm/'.$filename;
	$url =~ s{_}{/};
	}
my $request=new HTTP::Request('GET',"$clientprotocol://$clienthost$url");	my $request=new HTTP::Request('GET',"$clientprotocol://$clienthost$url");
my $response=$ua->request($request);	my $response = LONCAPA::LWPReq::makerequest($clientname,$request,'',\%perlvar,60,0);
if ($response->is_error()) {	if ($response->is_error()) {
&logthis('<font color="red"> Pushfile: unable to install '	&logthis('<font color="red"> Pushfile: unable to install '
.$tablefile." - error attempting to pull data. </font>");	.$tablefile." - error attempting to pull data. </font>");
Line 1496 sub ls_handler {	Line 1710 sub ls_handler {
}	}
} else {	} else {
unless (($ulsdir =~ m{^/home/httpd/lonUsers/$LONCAPA::match_domain(?:/[\w\-.@]){3}/$LONCAPA::match_name/}) \|\|	unless (($ulsdir =~ m{^/home/httpd/lonUsers/$LONCAPA::match_domain(?:/[\w\-.@]){3}/$LONCAPA::match_name/}) \|\|
($ulsdir =~ m{^/home/httpd/html/(?:res\|userfiles)/$LONCAPA::match_domain/$LONCAPA::match_name/})) {	($ulsdir =~ m{^/home/httpd/html/(?:res\|userfiles)/$LONCAPA::match_domain/$LONCAPA::match_name/})) {
&Failure($client,"refused\n",$userinput);	&Failure($client,"refused\n",$userinput);
return 1;	return 1;
}	}
Line 1705 sub ls3_handler {	Line 1919 sub ls3_handler {
my $rights;	my $rights;
my $ulsout='';	my $ulsout='';
my $ulsfn;	my $ulsfn;

	my ($crscheck,$toplevel,$currdom,$currnum,$skip);
	unless ($islocal) {
	my ($major,$minor) = split(/\./,$clientversion);
	if (($major < 2) \|\| ($major == 2 && $minor < 12)) {
	$crscheck = 1;
	}
	}
if (-e $ulsdir) {	if (-e $ulsdir) {
if(-d $ulsdir) {	if(-d $ulsdir) {
unless (($getpropath) \|\| ($getuserdir) \|\|	unless (($getpropath) \|\| ($getuserdir) \|\|
Line 1714 sub ls3_handler {	Line 1936 sub ls3_handler {
&Failure($client,"refused\n",$userinput);	&Failure($client,"refused\n",$userinput);
return 1;	return 1;
}	}
if (opendir(LSDIR,$ulsdir)) {	if (($crscheck) &&
	($ulsdir =~ m{^/home/httpd/html/res/($LONCAPA::match_domain)(/?$\|/$LONCAPA::match_courseid)})) {
	($currdom,my $posscnum) = ($1,$2);
	if (($posscnum eq '') \|\| ($posscnum eq '/')) {
	$toplevel = 1;
	} else {
	$posscnum =~ s{^/+}{};
	if (&LONCAPA::Lond::is_course($currdom,$posscnum)) {
	$skip = 1;
	}
	}
	}
	if ((!$skip) && (opendir(LSDIR,$ulsdir))) {
while ($ulsfn=readdir(LSDIR)) {	while ($ulsfn=readdir(LSDIR)) {
	if (($crscheck) && ($toplevel) && ($currdom ne '') &&
	($ulsfn =~ /^$LONCAPA::match_courseid$/) && (-d "$ulsdir/$ulsfn")) {
	if (&LONCAPA::Lond::is_course($currdom,$ulsfn)) {
	next;
	}
	}
undef($obs);	undef($obs);
undef($rights);	undef($rights);
my @ulsstats=stat($ulsdir.'/'.$ulsfn);	my @ulsstats=stat($ulsdir.'/'.$ulsfn);
Line 1768 sub read_lonnet_global {	Line 2008 sub read_lonnet_global {
);	);
my %limit_to = (	my %limit_to = (
perlvar => {	perlvar => {
lonOtherAuthen => 1,	lonOtherAuthen => 1,
lonBalancer => 1,	lonBalancer => 1,
lonVersion => 1,	lonVersion => 1,
lonSysEMail => 1,	lonAdmEMail => 1,
lonHostID => 1,	lonSupportEMail => 1,
lonRole => 1,	lonSysEMail => 1,
lonDefDomain => 1,	lonHostID => 1,
lonLoadLim => 1,	lonRole => 1,
lonUserLoadLim => 1,	lonDefDomain => 1,
	lonLoadLim => 1,
	lonUserLoadLim => 1,
}	}
);	);
if (ref($requested) eq 'HASH') {	if (ref($requested) eq 'HASH') {
Line 1888 sub server_distarch_handler {	Line 2130 sub server_distarch_handler {
}	}
&register_handler("serverdistarch", \&server_distarch_handler, 0, 1, 0);	&register_handler("serverdistarch", \&server_distarch_handler, 0, 1, 0);

	sub server_certs_handler {
	my ($cmd,$tail,$client) = @_;
	my $userinput = "$cmd:$tail";
	my $hostname = &Apache::lonnet::hostname($perlvar{'lonHostID'});
	my $result = &LONCAPA::Lond::server_certs(\%perlvar,$perlvar{'lonHostID'},$hostname);
	&Reply($client,\$result,$userinput);
	return;
	}
	&register_handler("servercerts", \&server_certs_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 2026 sub authenticate_handler {	Line 2278 sub authenticate_handler {
if (ref($hostedsession) eq 'HASH') {	if (ref($hostedsession) eq 'HASH') {
$hosted = $hostedsession->{'hosted'};	$hosted = $hostedsession->{'hosted'};
}	}
my $loncaparev = $clientversion;
if ($loncaparev eq '') {
$loncaparev = $Apache::lonnet::loncaparevs{$clientname};
}
$canhost = &Apache::lonnet::can_host_session($udom,$clientname,	$canhost = &Apache::lonnet::can_host_session($udom,$clientname,
$loncaparev,	$clientversion,
$remote,$hosted);	$remote,$hosted);
}	}
}	}
Line 2368 sub change_authentication_handler {	Line 2616 sub change_authentication_handler {
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,$umode,'changeuserauth');	&update_passwd_history($uname,$udom,$umode,'changeuserauth');
&Reply($client, \$result);	&Reply($client, \$result);
} else {	} else {
&Failure($client, \$result);	&Failure($client, \$result);
Line 2488 sub update_resource_handler {	Line 2736 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;
# FIXME: cannot replicate files that take more than two minutes to transfer?	# FIXME: cannot replicate files that take more than two minutes to transfer -- needs checking now 1200s timeout used
# alarm(120);	# for LWP request.
# FIXME: this should use the LWP mechanism, not internal alarms.	my $request=new HTTP::Request('GET',"$remoteurl");
alarm(1200);	$response=&LONCAPA::LWPReq::makerequest($clientname,$request,$transname,\%perlvar,1200,0,1);
{
my $ua=new LWP::UserAgent;
my $request=new HTTP::Request('GET',"$remoteurl");
$response=$ua->request($request,$transname);
}
alarm(0);
if ($response->is_error()) {	if ($response->is_error()) {
my $reply=&Apache::lonnet::reply("unsub:$fname","$clientname");	my $reply=&Apache::lonnet::reply("unsub:$fname","$clientname");
&devalidate_meta_cache($fname);	&devalidate_meta_cache($fname);
Line 2509 sub update_resource_handler {	Line 2751 sub update_resource_handler {
&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?	my $mrequest=new HTTP::Request('GET',$remoteurl.'.meta');
alarm(120);	my $mresponse = &LONCAPA::LWPReq::makerequest($clientname,$mrequest,$fname.'.meta',\%perlvar,120,0,1);
{	if ($mresponse->is_error()) {
my $ua=new LWP::UserAgent;	unlink($fname.'.meta');
my $mrequest=new HTTP::Request('GET',$remoteurl.'.meta');
my $mresponse=$ua->request($mrequest,$fname.'.meta');
if ($mresponse->is_error()) {
unlink($fname.'.meta');
}
}	}
alarm(0);
}	}
# we successfully transfered, copy file over to real name	# we successfully transfered, copy file over to real name
rename($transname,$fname);	rename($transname,$fname);
Line 2589 sub fetch_user_file_handler {	Line 2825 sub fetch_user_file_handler {
my $remoteurl=$clientprotocol.'://'.$clienthost.'/userfiles/'.$fname;	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);	my $request=new HTTP::Request('GET',"$remoteurl");
{	my $verifycert = 1;
my $ua=new LWP::UserAgent;	my @machine_ids = &Apache::lonnet::current_machine_ids();
my $request=new HTTP::Request('GET',"$remoteurl");	if (grep(/^\Q$clientname\E$/,@machine_ids)) {
$response=$ua->request($request,$transname);	$verifycert = 0;
}	}
alarm(0);	$response = &LONCAPA::LWPReq::makerequest($clientname,$request,$transname,\%perlvar,1200,$verifycert);
if ($response->is_error()) {	if ($response->is_error()) {
unlink($transname);	unlink($transname);
my $message=$response->status_line;	my $message=$response->status_line;
Line 2662 sub remove_user_file_handler {	Line 2898 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 appropriate	# removed, in which case rmdir is more appropriate.
# Note: rmdir will only remove an empty directory.	# Note: rmdir will only remove an empty directory.
#	#
if (-f $file){	if (-f $file){
unlink($file);	unlink($file);
# for html files remove the associated .bak file	# for html files remove the associated .bak file
# which may have been created by the editor.	# which may have been created by the editor.
if ($ufile =~ m{^((docs\|supplemental)/(?:\d+\|default)/\d+(?:\|/.+)/)[^/]+\.x?html?$}i) {	if ($ufile =~ m{^((docs\|supplemental)/(?:\d+\|default)/\d+(?:\|/.+)/)[^/]+\.x?html?$}i) {
my $path = $1;	my $path = $1;
Line 2804 sub user_has_session_handler {	Line 3040 sub user_has_session_handler {
}	}
&register_handler("userhassession", \&user_has_session_handler, 0,1,0);	&register_handler("userhassession", \&user_has_session_handler, 0,1,0);

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

	my $result;
	my ($udom, $uname) = map { &unescape($_) } (split(/:/, $tail));
	if (($udom =~ /^$LONCAPA::match_domain$/) && ($uname =~ /^$LONCAPA::match_username$/)) {
	my $lonidsdir = $perlvar{'lonIDsDir'};
	if (-d $lonidsdir) {
	if (opendir(DIR,$lonidsdir)) {
	my $filename;
	while ($filename=readdir(DIR)) {
	if ($filename=~/^\Q$uname\E_\d+_\Q$udom\E_/) {
	if (tie(my %oldenv,'GDBM_File',"$lonidsdir/$filename",
	&GDBM_READER(),0640)) {
	my $linkedfile;
	if (exists($oldenv{'user.linkedenv'})) {
	$linkedfile = $oldenv{'user.linkedenv'};
	}
	untie(%oldenv);
	$result = unlink("$lonidsdir/$filename");
	if ($result) {
	if ($linkedfile =~ /^[a-f0-9]+_linked$/) {
	if (-l "$lonidsdir/$linkedfile.id") {
	unlink("$lonidsdir/$linkedfile.id");
	}
	}
	}
	} else {
	$result = unlink("$lonidsdir/$filename");
	}
	last;
	}
	}
	}
	}
	if ($result == 1) {
	&Reply($client, "$result\n", "$cmd:$tail");
	} else {
	&Reply($client, "not_found\n", "$cmd:$tail");
	}
	} else {
	&Failure($client, "invalid_user\n", "$cmd:$tail");
	}
	return 1;
	}

	&register_handler("delusersession", \&del_usersession_handler, 0,1,0);

#	#
# Authenticate access to a user file by checking that the token the user's	# Authenticate access to a user file by checking that the token the user's
# passed also exists in their session file	# passed also exists in their session file
Line 3042 sub newput_user_profile_entry {	Line 3326 sub newput_user_profile_entry {
&logthis("error: ".($!+0)." untie (GDBM) failed ".	&logthis("error: ".($!+0)." untie (GDBM) failed ".
"while attempting newput - early out as key exists");	"while attempting newput - early out as key exists");
}	}
&Failure($client, "key_exists: ".$key."\n",$userinput);	&Failure($client, "key_exists: ".$key."\n",$userinput);
return 1;	return 1;
}	}
}	}

Line 3446 sub get_profile_keys {	Line 3730 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 3525 sub dump_with_regexp {	Line 3820 sub dump_with_regexp {
my ($cmd, $tail, $client) = @_;	my ($cmd, $tail, $client) = @_;

my $res = LONCAPA::Lond::dump_with_regexp($tail, $clientversion);	my $res = LONCAPA::Lond::dump_with_regexp($tail, $clientversion);

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

return 1;	return 1;
Line 3608 sub store_handler {	Line 3903 sub store_handler {
my ($cmd, $tail, $client) = @_;	my ($cmd, $tail, $client) = @_;

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

chomp($tail);	chomp($tail);
my ($udom,$uname,$namespace,$rid,$what,$laststore) =split(/:/,$tail);	my ($udom,$uname,$namespace,$rid,$what,$laststore) =split(/:/,$tail);
if ($namespace ne 'roles') {	if ($namespace ne 'roles') {
Line 3638 sub store_handler {	Line 3932 sub store_handler {
$numtrans =~ s/D//g;	$numtrans =~ s/D//g;
}	}
}	}

$hashref->{"version:$rid"}++;	$hashref->{"version:$rid"}++;
my $version=$hashref->{"version:$rid"};	my $version=$hashref->{"version:$rid"};
my $allkeys='';	my $allkeys='';
Line 3655 sub store_handler {	Line 3948 sub store_handler {
if ($numtrans) {	if ($numtrans) {
$msg = 'delay:'.$numtrans;	$msg = 'delay:'.$numtrans;
}	}
&Reply($client, "$msg\n", $userinput);	&Reply($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 3898 sub retrieve_chat_handler {	Line 4191 sub retrieve_chat_handler {
# serviced.	# serviced.
#	#
# Parameters:	# Parameters:
# $cmd - COmmand keyword that initiated the request.	# $cmd - Command keyword that initiated the request.
# $tail - Remainder of the command after the keyword.	# $tail - Remainder of the command after the keyword.
# For this function, this consists of a query and	# For this function, this consists of a query and
# 3 arguments that are self-documentingly labelled	# 3 arguments that are self-documentingly labelled
Line 3912 sub retrieve_chat_handler {	Line 4205 sub retrieve_chat_handler {
sub send_query_handler {	sub send_query_handler {
my ($cmd, $tail, $client) = @_;	my ($cmd, $tail, $client) = @_;


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

my ($query,$arg1,$arg2,$arg3)=split(/\:/,$tail);	my ($query,$arg1,$arg2,$arg3)=split(/\:/,$tail);
Line 4203 sub put_course_id_hash_handler {	Line 4495 sub put_course_id_hash_handler {
#	#
# domcloner - flag to indicate if user can create CCs in course's domain.	# domcloner - flag to indicate if user can create CCs in course's domain.
# If so, ability to clone course is automatic.	# If so, ability to clone course is automatic.
# hasuniquecode - filter by courses for which a six character unique code has	# hasuniquecode - filter by courses for which a six character unique code has
# been set.	# been set.
#	#
# $client - The socket open on the client.	# $client - The socket open on the client.
Line 4213 sub put_course_id_hash_handler {	Line 4505 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,
Line 4642 sub course_sessions_handler {	Line 4945 sub course_sessions_handler {
$sessions{$uname.':'.$udom} = $mtime;	$sessions{$uname.':'.$udom} = $mtime;
}	}
}	}
closedir(DIR);	closedir(DIR);
}	}
foreach my $user (keys(%sessions)) {	foreach my $user (keys(%sessions)) {
$qresult.=&escape($user).'='.$sessions{$user}.'&';	$qresult.=&escape($user).'='.$sessions{$user}.'&';
Line 4698 sub put_domain_handler {	Line 5001 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 4738 sub get_domain_handler {	Line 5157 sub get_domain_handler {
}	}
&register_handler("getdom", \&get_domain_handler, 0, 1, 0);	&register_handler("getdom", \&get_domain_handler, 0, 1, 0);

	#
	# Encrypted get from the namespace database file at the domain level.
	# This function retrieves a keyed item from a specific named database in the
	# domain directory.
	#
	# Parameters:
	# $cmd - Command request keyword (egetdom).
	# $tail - Tail of the command. This is a colon separated list
	# consisting of the domain and the 'namespace'
	# which selects the gdbm file to do the lookup in,
	# & separated list of keys to lookup. Note that
	# the values are returned as an & separated list too.
	# $client - File descriptor open on the client.
	# Returns:
	# 1 - Continue processing.
	# 0 - Exit.
	# Side effects:
	# reply is encrypted before being written to $client.
	#
sub encrypted_get_domain_handler {	sub encrypted_get_domain_handler {
my ($cmd, $tail, $client) = @_;	my ($cmd, $tail, $client) = @_;

Line 4794 sub encrypted_get_domain_handler {	Line 5232 sub encrypted_get_domain_handler {
# 0 - Exit.	# 0 - Exit.
# Side effects:	# Side effects:
# The reply will contain an LTI itemID, if the signed LTI payload	# The reply will contain an LTI itemID, if the signed LTI payload
# could be verified using the consumer key and the shared secret	# could be verified using the consumer key and the shared secret
# available for that key (for the itemID) for either the course or domain,	# available for that key (for the itemID) for either the course or domain,
# depending on values for cnum and context. The reply is encrypted before	# depending on values for cnum and context. The reply is encrypted before
# being written to $client.	# being written to $client.
#	#
sub lti_handler {	sub lti_handler {
Line 4945 sub get_id_handler {	Line 5383 sub get_id_handler {
# Returns:	# Returns:
# 1 - Continue processing	# 1 - Continue processing
# 0 - Exit server.	# 0 - Exit server.
#	#
#	#

sub del_id_handler {	sub del_id_handler {
Line 5664 sub validate_instcode_handler {	Line 6102 sub validate_instcode_handler {
# $instcode - Institutional course code for the course	# $instcode - Institutional course code for the course
# $inst_xlist - Institutional course Id for the crosslisting	# $inst_xlist - Institutional course Id for the crosslisting
# $coowner - Username of co-owner	# $coowner - Username of co-owner
# (values for all but $dom have been escaped).	# (values for all but $dom have been escaped).
#	#
# $client - Socket open on the client.	# $client - Socket open on the client.
# Returns:	# Returns:
Line 5783 sub validate_course_section_handler {	Line 6221 sub validate_course_section_handler {
# $tail - The tail of the command. In this case this is a colon separated	# $tail - The tail of the command. In this case this is a colon separated
# set of values that will be split into:	# set of values that will be split into:
# $inst_class - Institutional code for the specific class section	# $inst_class - Institutional code for the specific class section
# $ownerlist - An escaped comma-separated list of username:domain	# $ownerlist - An escaped comma-separated list of username:domain
# of the course owner, and co-owner(s).	# of the course owner, and co-owner(s).
# $cdom - The domain of the course from the institution's	# $cdom - The domain of the course from the institution's
# point of view.	# point of view.
Line 5810 sub validate_class_access_handler {	Line 6248 sub validate_class_access_handler {

#	#
# Modify institutional sections (using customized &instsec_reformat()	# Modify institutional sections (using customized &instsec_reformat()
# routine in localenroll.pm), to either clutter or declutter, for	# routine in localenroll.pm), to either clutter or declutter, for
# purposes of ensuring an institutional course section (string) can	# purposes of ensuring an institutional course section (string) can
# be unambiguously separated into institutional course and section.	# be unambiguously separated into institutional course and section.
#	#
Line 5823 sub validate_class_access_handler {	Line 6261 sub validate_class_access_handler {
# clutter adds character(s) to eliminate ambiguity	# clutter adds character(s) to eliminate ambiguity
# declutter removes the added characters (e.g., for	# declutter removes the added characters (e.g., for
# display of the institutional course section string.	# display of the institutional course section string.
# $info - A frozen hash in which keys are:	# $info - A frozen hash in which keys are:
# LON-CAPA course number:Institutional course code	# LON-CAPA course number:Institutional course code
# and values are a reference to an array of the	# and values are a reference to an array of the
# items to modify -- either institutional sections,	# items to modify -- either institutional sections,
# or institutional course sections (for crosslistings).	# or institutional course sections (for crosslistings).
# $client - The socket open on the client.	# $client - The socket open on the client.
# Returns:	# Returns:
# 1 - continue processing.	# 1 - continue processing.
#	#

sub instsec_reformat_handler {	sub instsec_reformat_handler {
my ($cmd, $tail, $client) = @_;	my ($cmd, $tail, $client) = @_;
Line 5994 sub auto_export_grades_handler {	Line 6432 sub auto_export_grades_handler {
&register_handler("autoexportgrades", \&auto_export_grades_handler,	&register_handler("autoexportgrades", \&auto_export_grades_handler,
1, 1, 0);	1, 1, 0);


# Retrieve and remove temporary files created by/during autoenrollment.	# Retrieve and remove temporary files created by/during autoenrollment.
#	#
# Formal Parameters:	# Formal Parameters:
Line 6015 sub retrieve_auto_file_handler {	Line 6452 sub retrieve_auto_file_handler {
my ($filename) = split(/:/, $tail);	my ($filename) = split(/:/, $tail);

my $source = $perlvar{'lonDaemons'}.'/tmp/'.$filename;	my $source = $perlvar{'lonDaemons'}.'/tmp/'.$filename;

if ($filename =~m{/\.\./}) {	if ($filename =~m{/\.\./}) {
&Failure($client, "refused\n", $userinput);	&Failure($client, "refused\n", $userinput);
} elsif ($filename !~ /^$LONCAPA::match_domain\_$LONCAPA::match_courseid\_.+_classlist\.xml$/) {	} elsif ($filename !~ /^$LONCAPA::match_domain\_$LONCAPA::match_courseid\_.+_classlist\.xml$/) {
Line 6051 sub crsreq_checks_handler {	Line 6489 sub crsreq_checks_handler {
my $userinput = "$cmd:$tail";	my $userinput = "$cmd:$tail";
my $dom = $tail;	my $dom = $tail;
my $result;	my $result;
my @reqtypes = ('official','unofficial','community','textbook');	my @reqtypes = ('official','unofficial','community','textbook','placement');
eval {	eval {
local($SIG{__DIE__})='DEFAULT';	local($SIG{__DIE__})='DEFAULT';
my %validations;	my %validations;
Line 6656 sub get_request {	Line 7094 sub get_request {
#	#
# Parameters:	# Parameters:
# user_input - The request received from the client (lonc).	# user_input - The request received from the client (lonc).
	#
# Returns:	# Returns:
# true to keep processing, false if caller should exit.	# true to keep processing, false if caller should exit.
#	#
sub process_request {	sub process_request {
my ($userinput) = @_; # Easier for now to break style than to	my ($userinput) = @_; # Easier for now to break style than to
# fix all the userinput -> user_input.	# fix all the userinput -> user_input.
my $wasenc = 0; # True if request was encrypted.	my $wasenc = 0; # True if request was encrypted.
# ------------------------------------------------------------ See if encrypted	# ------------------------------------------------------------ See if encrypted
# for command	# for command
Line 6741 sub process_request {	Line 7180 sub process_request {
Debug("Client not privileged to do this operation");	Debug("Client not privileged to do this operation");
$ok = 0;	$ok = 0;
}	}
	if ($ok) {
	my $realcommand = $command;
	if ($command eq 'querysend') {
	my ($query,$rest)=split(/\:/,$tail,2);
	$query=~s/\n*$//g;
	my @possqueries =
	qw(userlog courselog fetchenrollment institutionalphotos usersearch instdirsearch getinstuser getmultinstusers);
	if (grep(/^\Q$query\E$/,@possqueries)) {
	$command .= '_'.$query;
	} elsif ($query eq 'prepare activity log') {
	$command .= '_activitylog';
	}
	}
	if (ref($trust{$command}) eq 'HASH') {
	my $donechecks;
	if ($trust{$command}{'anywhere'}) {
	$donechecks = 1;
	} elsif ($trust{$command}{'manageronly'}) {
	unless (&isManager()) {
	$ok = 0;
	}
	$donechecks = 1;
	} elsif ($trust{$command}{'institutiononly'}) {
	unless ($clientsameinst) {
	$ok = 0;
	}
	$donechecks = 1;
	} elsif ($clientsameinst) {
	$donechecks = 1;
	}
	unless ($donechecks) {
	foreach my $rule (keys(%{$trust{$command}})) {
	next if ($rule eq 'remote');
	if ($trust{$command}{$rule}) {
	if ($clientprohibited{$rule}) {
	$ok = 0;
	} else {
	$ok = 1;
	$donechecks = 1;
	last;
	}
	}
	}
	}
	unless ($donechecks) {
	if ($trust{$command}{'remote'}) {
	if ($clientremoteok) {
	$ok = 1;
	} else {
	$ok = 0;
	}
	}
	}
	}
	$command = $realcommand;
	}

if($ok) {	if($ok) {
Debug("Dispatching to handler $command $tail");	Debug("Dispatching to handler $command $tail");
Line 6751 sub process_request {	Line 7246 sub process_request {
Failure($client, "refused\n", $userinput);	Failure($client, "refused\n", $userinput);
return 1;	return 1;
}	}
	}
}

print $client "unknown_cmd\n";	print $client "unknown_cmd\n";
# -------------------------------------------------------------------- complete	# -------------------------------------------------------------------- complete
Line 7009 sub UpdateHosts {	Line 7503 sub UpdateHosts {
# will take care of new and changed hosts as connections come into being.	# will take care of new and changed hosts as connections come into being.

&Apache::lonnet::reset_hosts_info();	&Apache::lonnet::reset_hosts_info();
	my %active;

foreach my $child (keys(%children)) {	foreach my $child (keys(%children)) {
my $childip = $children{$child};	my $childip = $children{$child};
Line 7018 sub UpdateHosts {	Line 7513 sub UpdateHosts {
." $child for ip $childip </font>");	." $child for ip $childip </font>");
kill('INT', $child);	kill('INT', $child);
} else {	} else {
	$active{$child} = $childip;
logthis('<font color="green"> keeping child for ip '	logthis('<font color="green"> keeping child for ip '
." $childip (pid=$child) </font>");	." $childip (pid=$child) </font>");
}	}
}	}

	my %oldconf = %secureconf;
	my %connchange;
	if (lonssl::Read_Connect_Config(\%secureconf,\%perlvar,\%crlchecked) eq 'ok') {
	logthis('<font color="blue"> Reloaded SSL connection rules and cleared CRL checking history </font>');
	} else {
	logthis('<font color="yellow"> Failed to reload SSL connection rules and clear CRL checking history </font>');
	}
	if ((ref($oldconf{'connfrom'}) eq 'HASH') && (ref($secureconf{'connfrom'}) eq 'HASH')) {
	foreach my $type ('dom','intdom','other') {
	if ((($oldconf{'connfrom'}{$type} eq 'no') && ($secureconf{'connfrom'}{$type} eq 'req')) \|\|
	(($oldconf{'connfrom'}{$type} eq 'req') && ($secureconf{'connfrom'}{$type} eq 'no'))) {
	$connchange{$type} = 1;
	}
	}
	}
	if (keys(%connchange)) {
	foreach my $child (keys(%active)) {
	my $childip = $active{$child};
	if ($childip ne '127.0.0.1') {
	my $childhostname = gethostbyaddr(Socket::inet_aton($childip),AF_INET);
	if ($childhostname ne '') {
	my $childlonhost = &Apache::lonnet::get_server_homeID($childhostname);
	my ($samedom,$sameinst) = &set_client_info($childlonhost);
	if ($samedom) {
	if ($connchange{'dom'}) {
	logthis('<font color="blue"> UpdateHosts killing child '
	." $child for ip $childip </font>");
	kill('INT', $child);
	}
	} elsif ($sameinst) {
	if ($connchange{'intdom'}) {
	logthis('<font color="blue"> UpdateHosts killing child '
	." $child for ip $childip </font>");
	kill('INT', $child);
	}
	} else {
	if ($connchange{'other'}) {
	logthis('<font color="blue"> UpdateHosts killing child '
	." $child for ip $childip </font>");
	kill('INT', $child);
	}
	}
	}
	}
	}
	}
ReloadApache;	ReloadApache;
&status("Finished reloading hosts.tab");	&status("Finished reloading hosts.tab");
}	}


sub checkchildren {	sub checkchildren {
&status("Checking on the children (sending signals)");	&status("Checking on the children (sending signals)");
&initnewstatus();	&initnewstatus();
Line 7096 sub Debug {	Line 7638 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($reply)) {
Line 7258 if ($arch eq 'unknown') {	Line 7803 if ($arch eq 'unknown') {
chomp($arch);	chomp($arch);
}	}

	unless (lonssl::Read_Connect_Config(\%secureconf,\%perlvar,\%crlchecked) eq 'ok') {
	&logthis('<font color="blue">No connectionrules table. Will fallback to loncapa.conf</font>');
	}

# --------------------------------------------------------------	# --------------------------------------------------------------
# Accept connections. When a connection comes in, it is validated	# Accept connections. When a connection comes in, it is validated
# and if good, a child process is created to process transactions	# and if good, a child process is created to process transactions
Line 7349 sub make_new_child {	Line 7898 sub make_new_child {
}	}
} elsif ($dist =~ /^suse(\d+\.\d+)$/) {	} elsif ($dist =~ /^suse(\d+\.\d+)$/) {
if (($1 eq '9.3') \|\| ($1 >= 12.2)) {	if (($1 eq '9.3') \|\| ($1 >= 12.2)) {
$no_ets = 1;	$no_ets = 1;
}	}
} elsif ($dist =~ /^sles(\d+)$/) {	} elsif ($dist =~ /^sles(\d+)$/) {
if ($1 > 11) {	if ($1 > 11) {
Line 7361 sub make_new_child {	Line 7910 sub make_new_child {
}	}
}	}
unless ($no_ets) {	unless ($no_ets) {
&Authen::Krb5::init_ets();	&Authen::Krb5::init_ets();
}	}

&status('Accepted connection');	&status('Accepted connection');
# =============================================================================	# =============================================================================
Line 7406 sub make_new_child {	Line 7955 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	# 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,	# version when initiating the connection. For LON-CAPA 2.8 and older,
# the version is retrieved from the global %loncaparevs in lonnet.pm.	# the version is retrieved from the global %loncaparevs in lonnet.pm.
# $clientversion contains path to keyfile if $inittype eq 'local'	# $clientversion contains path to keyfile if $inittype eq 'local'
# it's overridden below in this case	# it's overridden below in this case
$clientversion \|\|= $Apache::lonnet::loncaparevs{$clientname};	$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
# insecure (if allowed).	# insecure (if allowed).

	if ($inittype eq "ssl") {
	my $context;
	if ($clientsamedom) {
	$context = 'dom';
	if ($secureconf{'connfrom'}{'dom'} eq 'no') {
	$inittype = "";
	}
	} elsif ($clientsameinst) {
	$context = 'intdom';
	if ($secureconf{'connfrom'}{'intdom'} eq 'no') {
	$inittype = "";
	}
	} else {
	$context = 'other';
	if ($secureconf{'connfrom'}{'other'} eq 'no') {
	$inittype = "";
	}
	}
	if ($inittype eq '') {
	&logthis("<font color=\"blue\"> Domain config set "
	."to no ssl for $clientname (context: $context)"
	." -- trying insecure auth</font>");
	}
	}

if($inittype eq "ssl") {	if($inittype eq "ssl") {
my ($ca, $cert) = lonssl::CertificateFile;	my ($ca, $cert) = lonssl::CertificateFile;
my $kfile = lonssl::KeyFile;	my $kfile = lonssl::KeyFile;
Line 7449 sub make_new_child {	Line 8023 sub make_new_child {
close $client;	close $client;
}	}
} elsif ($inittype eq "ssl") {	} elsif ($inittype eq "ssl") {
my $key = SSLConnection($client);	my $key = SSLConnection($client,$clientname);
if ($key) {	if ($key) {
$clientok = 1;	$clientok = 1;
my $cipherkey = pack("H32", $key);	my $cipherkey = pack("H32", $key);
Line 7501 sub make_new_child {	Line 8075 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 7519 sub make_new_child {	Line 8091 sub make_new_child {
&logthis("<font color='blue'>WARNING: "	&logthis("<font color='blue'>WARNING: "
."Rejected client $clientip, closing connection</font>");	."Rejected client $clientip, closing connection</font>");
}	}
}	}

# =============================================================================	# =============================================================================

Line 7533 sub make_new_child {	Line 8105 sub make_new_child {
exit;	exit;

}	}

	#
	# Used to determine if a particular client is from the same domain
	# as the current server, or from the same internet domain, and
	# also if the client can host sessions for the domain's users.
	# A hash is populated with keys set to commands sent by the client
	# which may not be executed for this domain.
	#
	# Optional input -- the client to check for domain and internet domain.
	# If not specified, defaults to the package variable: $clientname
	#
	# If called in array context will not set package variables, but will
	# instead return an array of two values - (a) true if client is in the
	# same domain as the server, and (b) true if client is in the same
	# internet domain.
	#
	# If called in scalar context, sets package variables for current client:
	#
	# $clienthomedom - LonCAPA domain of homeID for client.
	# $clientsamedom - LonCAPA domain same for this host and client.
	# $clientintdom - LonCAPA "internet domain" for client.
	# $clientsameinst - LonCAPA "internet domain" same for this host & client.
	# $clientremoteok - If current domain permits hosting on this client: 1
	# %clientprohibited - Commands prohibited for domain's users for this client.
	#
	# if the host and client have the same "internet domain", then the value
	# of $clientremoteok is not used, and no commands are prohibited.
	#
	# returns 1 to indicate package variables have been set for current client.
	#

	sub set_client_info {
	my ($lonhost) = @_;
	$lonhost \|\|= $clientname;
	my $clienthost = &Apache::lonnet::hostname($lonhost);
	my $clientserverhomeID = &Apache::lonnet::get_server_homeID($clienthost);
	my $homedom = &Apache::lonnet::host_domain($clientserverhomeID);
	my $samedom = 0;
	if ($perlvar{'lonDefDomain'} eq $homedom) {
	$samedom = 1;
	}
	my $intdom = &Apache::lonnet::internet_dom($clientserverhomeID);
	my $sameinst = 0;
	if ($intdom ne '') {
	my $internet_names = &Apache::lonnet::get_internet_names($currenthostid);
	if (ref($internet_names) eq 'ARRAY') {
	if (grep(/^\Q$intdom\E$/,@{$internet_names})) {
	$sameinst = 1;
	}
	}
	}
	if (wantarray) {
	return ($samedom,$sameinst);
	} else {
	$clienthomedom = $homedom;
	$clientsamedom = $samedom;
	$clientintdom = $intdom;
	$clientsameinst = $sameinst;
	if ($clientsameinst) {
	undef($clientremoteok);
	undef(%clientprohibited);
	} else {
	$clientremoteok = &get_remote_hostable($currentdomainid);
	%clientprohibited = &get_prohibited($currentdomainid);
	}
	return 1;
	}
	}

#	#
# Determine if a user is an author for the indicated domain.	# Determine if a user is an author for the indicated domain.
#	#
Line 7748 sub validate_user {	Line 8389 sub validate_user {
($domdefaults{'auth_arg_def'} ne '')) {	($domdefaults{'auth_arg_def'} ne '')) {
#	#
# Don't attempt authentication for username and password supplied	# Don't attempt authentication for username and password supplied
# for user without an account if username contains @ to avoid	# for user without an account if uername contains @ to avoid
# call to &Authen::Krb5::parse_name() which will result in con_lost	# call to &Authen::Krb5::parse_name() which will result in con_lost
#	#
unless ($user =~ /\@/) {	unless ($user =~ /\@/) {
$howpwd = $domdefaults{'auth_def'};	$howpwd = $domdefaults{'auth_def'};
Line 7862 sub check_internal_passwd {	Line 8503 sub check_internal_passwd {
$defaultcost = 10;	$defaultcost = 10;
}	}
if (int($rest[0])<int($defaultcost)) {	if (int($rest[0])<int($defaultcost)) {
if ($domdefaults{'intauth_check'} == 1) {	if ($domdefaults{'intauth_check'} == 1) {
my $ncpass = &hash_passwd($domain,$plainpass);	my $ncpass = &hash_passwd($domain,$plainpass);
if (&rewrite_password_file($domain,$user,"internal:$ncpass")) {	if (&rewrite_password_file($domain,$user,"internal:$ncpass")) {
&update_passwd_history($user,$domain,'internal','update cost');	&update_passwd_history($user,$domain,'internal','update cost');
Line 8223 sub make_passwd_file {	Line 8864 sub make_passwd_file {
&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);	&update_passwd_history($uname,$udom,$umode,$action);
} else {	} else {
$result = "pass_file_failed_error";	$result = "pass_file_failed_error";
}	}
Line 8251 sub make_passwd_file {	Line 8892 sub make_passwd_file {
$result = "pass_file_failed_error";	$result = "pass_file_failed_error";
}	}
}	}
	} elsif ($umode eq 'lti') {
	my $pf = IO::File->new(">$passfilename");
	if($pf) {
	print $pf "lti:\n";
	&update_passwd_history($uname,$udom,$umode,$action);
	} else {
	$result = "pass_file_failed_error";
	}
} else {	} else {
$result="auth_mode_error";	$result="auth_mode_error";
}	}
Line 8275 sub sethost {	Line 8924 sub sethost {
eq &Apache::lonnet::get_host_ip($hostid)) {	eq &Apache::lonnet::get_host_ip($hostid)) {
$currenthostid =$hostid;	$currenthostid =$hostid;
$currentdomainid=&Apache::lonnet::host_domain($hostid);	$currentdomainid=&Apache::lonnet::host_domain($hostid);
	&set_client_info();
# &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 ".
Line 8297 sub get_usersession_config {	Line 8947 sub get_usersession_config {
return $usersessionconf;	return $usersessionconf;
} else {	} else {
my %domconfig = &Apache::lonnet::get_dom('configuration',['usersessions'],$dom);	my %domconfig = &Apache::lonnet::get_dom('configuration',['usersessions'],$dom);
if (ref($domconfig{'usersessions'}) eq 'HASH') {	&Apache::lonnet::do_cache_new($name,$dom,$domconfig{'usersessions'},3600);
&Apache::lonnet::do_cache_new($name,$dom,$domconfig{'usersessions'},3600);	return $domconfig{'usersessions'};
return $domconfig{'usersessions'};
}
}	}
return;	return;
}	}
Line 8312 sub get_usersearch_config {	Line 8960 sub get_usersearch_config {
return $usersearchconf;	return $usersearchconf;
} else {	} else {
my %domconfig = &Apache::lonnet::get_dom('configuration',['directorysrch'],$dom);	my %domconfig = &Apache::lonnet::get_dom('configuration',['directorysrch'],$dom);
&Apache::lonnet::do_cache_new($name,$dom,$domconfig{'directorysrch'},3600);	&Apache::lonnet::do_cache_new($name,$dom,$domconfig{'directorysrch'},600);
return $domconfig{'directorysrch'};	return $domconfig{'directorysrch'};
}	}
return;	return;
}	}

	sub get_prohibited {
	my ($dom) = @_;
	my $name = 'trust';
	my ($trustconfig,$cached)=&Apache::lonnet::is_cached_new($name,$dom);
	unless (defined($cached)) {
	my %domconfig = &Apache::lonnet::get_dom('configuration',['trust'],$dom);
	&Apache::lonnet::do_cache_new($name,$dom,$domconfig{'trust'},3600);
	$trustconfig = $domconfig{'trust'};
	}
	my %prohibited;
	if (ref($trustconfig)) {
	foreach my $prefix (keys(%{$trustconfig})) {
	if (ref($trustconfig->{$prefix}) eq 'HASH') {
	my $reject;
	if (ref($trustconfig->{$prefix}->{'exc'}) eq 'ARRAY') {
	if (grep(/^\Q$clientintdom\E$/,@{$trustconfig->{$prefix}->{'exc'}})) {
	$reject = 1;
	}
	}
	if (ref($trustconfig->{$prefix}->{'inc'}) eq 'ARRAY') {
	if (grep(/^\Q$clientintdom\E$/,@{$trustconfig->{$prefix}->{'inc'}})) {
	$reject = 0;
	} else {
	$reject = 1;
	}
	}
	if ($reject) {
	$prohibited{$prefix} = 1;
	}
	}
	}
	}
	return %prohibited;
	}

	sub get_remote_hostable {
	my ($dom) = @_;
	my $result;
	if ($clientintdom) {
	$result = 1;
	my $remsessconf = &get_usersession_config($dom,'remotesession');
	if (ref($remsessconf) eq 'HASH') {
	if (ref($remsessconf->{'remote'}) eq 'HASH') {
	if (ref($remsessconf->{'remote'}->{'excludedomain'}) eq 'ARRAY') {
	if (grep(/^\Q$clientintdom\E$/,@{$remsessconf->{'remote'}->{'excludedomain'}})) {
	$result = 0;
	}
	}
	if (ref($remsessconf->{'remote'}->{'includedomain'}) eq 'ARRAY') {
	if (grep(/^\Q$clientintdom\E$/,@{$remsessconf->{'remote'}->{'includedomain'}})) {
	$result = 1;
	} else {
	$result = 0;
	}
	}
	}
	}
	}
	return $result;
	}

sub distro_and_arch {	sub distro_and_arch {
return $dist.':'.$arch;	return $dist.':'.$arch;
}	}
Line 8501 Allow for a password to be set.	Line 9210 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 8590 for each student, defined perhaps by the	Line 9299 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 8639 IO::File	Line 9352 IO::File
Apache::File	Apache::File
POSIX	POSIX
Crypt::IDEA	Crypt::IDEA
LWP::UserAgent()
GDBM_File	GDBM_File
Authen::Krb4	Authen::Krb4
Authen::Krb5	Authen::Krb5

=head1 COREQUISITES	=head1 COREQUISITES

	none

=head1 OSNAMES	=head1 OSNAMES

linux	linux
Line 8719 is closed and the child exits.	Line 9433 is closed and the child exits.
=item Red CRITICAL Can't get key file <error>	=item Red CRITICAL Can't get key file <error>

SSL key negotiation is being attempted but the call to	SSL key negotiation is being attempted but the call to
lonssl::KeyFile failed. This usually means that the	lonssl::KeyFile failed. This usually means that the
configuration file is not correctly defining or protecting	configuration file is not correctly defining or protecting
the directories/files lonCertificateDirectory or	the directories/files lonCertificateDirectory or
lonnetPrivateKey	lonnetPrivateKey
Line 8733 or the CA's certificate in the call to l	Line 9447 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 8854 Could not rewrite the	Line 9568 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 8883 lond has been asked to exit by its clien	Line 9597 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 8967 file when sent it's USR1 signal. That p	Line 9681 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 8981 Started a new child process for <client>	Line 9695 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 8992 In child process initialization. The pe	Line 9706 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 9042 The client (<client> is the peer's name	Line 9756 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.

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

Removed from v.1.489.2.43.2.4
changed lines
	Added in v.1.574