--- loncom/lond 2007/03/28 22:46:44 1.367
+++ loncom/lond 2007/04/10 23:11:30 1.373
@@ -2,7 +2,7 @@
# The LearningOnline Network
# lond "LON Daemon" Server (port "LOND" 5663)
#
-# $Id: lond,v 1.367 2007/03/28 22:46:44 albertel Exp $
+# $Id: lond,v 1.373 2007/04/10 23:11:30 albertel Exp $
#
# Copyright Michigan State University Board of Trustees
#
@@ -59,7 +59,7 @@ my $DEBUG = 0; # Non zero to ena
my $status='';
my $lastlog='';
-my $VERSION='$Revision: 1.367 $'; #' stupid emacs
+my $VERSION='$Revision: 1.373 $'; #' stupid emacs
my $remoteVERSION;
my $currenthostid="default";
my $currentdomainid;
@@ -69,7 +69,6 @@ my $clientip; # IP address of client.
my $clientname; # LonCAPA name of client.
my $server;
-my $thisserver; # DNS of us.
my $keymode;
@@ -85,12 +84,6 @@ my $tmpsnum = 0; # Id of tmpputs.
my $ConnectionType;
-my %hostid; # ID's for hosts in cluster by ip.
-my %hostdom; # LonCAPA domain for hosts in cluster.
-my %hostname; # DNSname -> ID's mapping.
-my %hostip; # IPs for hosts in cluster.
-my %hostdns; # ID's of hosts looked up by DNS name.
-
my %managers; # Ip -> manager names
my %perlvar; # Will have the apache conf defined perl vars.
@@ -178,19 +171,16 @@ sub ResetStatistics {
# $Socket - Socket open on client.
# $initcmd - The full text of the init command.
#
-# Implicit inputs:
-# $thisserver - Our DNS name.
-#
# Returns:
# IDEA session key on success.
# undef on failure.
#
sub LocalConnection {
my ($Socket, $initcmd) = @_;
- Debug("Attempting local connection: $initcmd client: $clientip me: $thisserver");
+ Debug("Attempting local connection: $initcmd client: $clientip");
if($clientip ne "127.0.0.1") {
&logthis('<font color="red"> LocalConnection rejecting non local: '
- ."$clientip ne $thisserver </font>");
+ ."$clientip ne 127.0.0.1 </font>");
close $Socket;
return undef;
} else {
@@ -424,7 +414,7 @@ sub ReadManagerTable {
if ($host =~ "^#") { # Comment line.
next;
}
- if (!defined $hostip{$host}) { # This is a non cluster member
+ if (!defined &Apache::lonnet::get_host_ip($host)) { # This is a non cluster member
# The entry is of the form:
# cluname:hostname
# cluname - A 'cluster hostname' is needed in order to negotiate
@@ -442,7 +432,7 @@ sub ReadManagerTable {
}
} else {
logthis('<font color="green"> existing host'." $host</font>\n");
- $managers{$hostip{$host}} = $host; # Use info from cluster tab if clumemeber
+ $managers{&Apache::lonnet::get_host_ip($host)} = $host; # Use info from cluster tab if clumemeber
}
}
}
@@ -4625,8 +4615,12 @@ sub inst_usertypes_handler {
my ($cmd, $domain, $client) = @_;
my $res;
my $userinput = $cmd.":".$domain; # For logging purposes.
- my (%typeshash,@order);
- if (&localenroll::inst_usertypes($domain,\%typeshash,\@order) eq 'ok') {
+ my (%typeshash,@order,$result);
+ eval {
+ local($SIG{__DIE__})='DEFAULT';
+ $result=&localenroll::inst_usertypes($domain,\%typeshash,\@order);
+ };
+ if ($result eq 'ok') {
if (keys(%typeshash) > 0) {
foreach my $key (keys(%typeshash)) {
$res.=&escape($key).'='.&escape($typeshash{$key}).'&';
@@ -4909,7 +4903,7 @@ sub catchexception {
$SIG{__DIE__}='DEFAULT';
&status("Catching exception");
&logthis("<font color='red'>CRITICAL: "
- ."ABNORMAL EXIT. Child $$ for server $thisserver died through "
+ ."ABNORMAL EXIT. Child $$ for server ".$perlvar{'lonHostID'}." died through "
."a crash with this error msg->[$error]</font>");
&logthis('Famous last words: '.$status.' - '.$lastlog);
if ($client) { print $client "error: $error\n"; }
@@ -5020,67 +5014,6 @@ sub HUPSMAN { # sig
}
#
-# Kill off hashes that describe the host table prior to re-reading it.
-# Hashes affected are:
-# %hostid, %hostdom %hostip %hostdns.
-#
-sub KillHostHashes {
- foreach my $key (keys %hostid) {
- delete $hostid{$key};
- }
- foreach my $key (keys %hostdom) {
- delete $hostdom{$key};
- }
- foreach my $key (keys %hostip) {
- delete $hostip{$key};
- }
- foreach my $key (keys %hostdns) {
- delete $hostdns{$key};
- }
-}
-#
-# Read in the host table from file and distribute it into the various hashes:
-#
-# - %hostid - Indexed by IP, the loncapa hostname.
-# - %hostdom - Indexed by loncapa hostname, the domain.
-# - %hostip - Indexed by hostid, the Ip address of the host.
-sub ReadHostTable {
-
- open (CONFIG,"$perlvar{'lonTabDir'}/hosts.tab") || die "Can't read host file";
- my $myloncapaname = $perlvar{'lonHostID'};
- Debug("My loncapa name is : $myloncapaname");
- my %name_to_ip;
- while (my $configline=<CONFIG>) {
- if ($configline !~ /^\s*\#/ && $configline !~ /^\s*$/ ) {
- my ($id,$domain,$role,$name)=split(/:/,$configline);
- $name=~s/\s//g;
- my $ip;
- if (!exists($name_to_ip{$name})) {
- $ip = gethostbyname($name);
- if (!$ip || length($ip) ne 4) {
- &logthis("Skipping host $id name $name no IP found\n");
- next;
- }
- $ip=inet_ntoa($ip);
- $name_to_ip{$name} = $ip;
- } else {
- $ip = $name_to_ip{$name};
- }
- $hostid{$ip}=$id; # LonCAPA name of host by IP.
- $hostdom{$id}=$domain; # LonCAPA domain name of host.
- $hostname{$id}=$name; # LonCAPA name -> DNS name
- $hostip{$id}=$ip; # IP address of host.
- $hostdns{$name} = $id; # LonCAPA name of host by DNS.
-
- if ($id eq $perlvar{'lonHostID'}) {
- Debug("Found me in the host table: $name");
- $thisserver=$name;
- }
- }
- }
- close(CONFIG);
-}
-#
# Reload the Apache daemon's state.
# This is done by invoking /home/httpd/perl/apachereload
# a setuid perl script that can be root for us to do this job.
@@ -5111,13 +5044,11 @@ sub UpdateHosts {
# either dropped or changed hosts. Note that the re-read of the table
# will take care of new and changed hosts as connections come into being.
+ &Apache::lonnet::reset_hosts_info();
- KillHostHashes;
- ReadHostTable;
-
- foreach my $child (keys %children) {
+ foreach my $child (keys(%children)) {
my $childip = $children{$child};
- if(!$hostid{$childip}) {
+ if (!defined(&Apache::lonnet::get_hosts_from_ip($childip))) {
logthis('<font color="blue"> UpdateHosts killing child '
." $child for ip $childip </font>");
kill('INT', $child);
@@ -5345,8 +5276,7 @@ $SIG{USR1} = \&checkchildren;
$SIG{USR2} = \&UpdateHosts;
# Read the host hashes:
-
-ReadHostTable;
+&Apache::lonnet::load_hosts_tab();
my $dist=`$perlvar{'lonDaemons'}/distprobe`;
@@ -5436,19 +5366,17 @@ sub make_new_child {
# -----------------------------------------------------------------------------
# see if we know client and 'check' for spoof IP by ineffective challenge
- ReadManagerTable; # May also be a manager!!
-
my $outsideip=$clientip;
if ($clientip eq '127.0.0.1') {
- $outsideip=$hostip{$perlvar{'lonHostID'}};
+ $outsideip=&Apache::lonnet::get_host_ip($perlvar{'lonHostID'});
}
- my $clientrec=($hostid{$outsideip} ne undef);
+ my $clientrec=defined(&Apache::lonnet::get_hosts_from_ip($outsideip));
my $ismanager=($managers{$outsideip} ne undef);
$clientname = "[unknonwn]";
if($clientrec) { # Establish client type.
$ConnectionType = "client";
- $clientname = $hostid{$outsideip};
+ $clientname = (&Apache::lonnet::get_hosts_from_ip($outsideip))[-1];
if($ismanager) {
$ConnectionType = "both";
}
@@ -5555,8 +5483,7 @@ sub make_new_child {
if ($clientok) {
# ---------------- New known client connecting, could mean machine online again
-
- if ($hostip{$currenthostid} ne $clientip
+ if (&Apache::lonnet::get_host_ip($currenthostid) ne $clientip
&& $clientip ne '127.0.0.1') {
&Apache::lonnet::reconlonc();
}
@@ -6087,7 +6014,7 @@ sub subscribe {
# the metadata
unless ($fname=~/\.meta$/) { &unsub("$fname.meta",$clientip); }
$fname=~s/\/home\/httpd\/html\/res/raw/;
- $fname="http://$thisserver/".$fname;
+ $fname="http://".&Apache::lonnet::hostname($perlvar{'lonHostID'})."/".$fname;
$result="$fname\n";
}
} else {
@@ -6241,9 +6168,10 @@ sub sethost {
}
if (!defined($hostid)) { $hostid=$perlvar{'lonHostID'}; }
- if ($hostip{$perlvar{'lonHostID'}} eq $hostip{$hostid}) {
+ if (&Apache::lonnet::get_host_ip($perlvar{'lonHostID'})
+ eq &Apache::lonnet::get_host_ip($hostid)) {
$currenthostid =$hostid;
- $currentdomainid=$hostdom{$hostid};
+ $currentdomainid=&Apache::lonnet::host_domain($hostid);
&logthis("Setting hostid to $hostid, and domain to $currentdomainid");
} else {
&logthis("Requested host id $hostid not an alias of ".