-#!/usr/bin/perl
+#!/usr/bin/perl -w
#
# This is the DX cluster 'daemon'. It sits in the middle of its little
# web of client routines sucking and blowing data where it may.
# $Id$
#
+require 5.004;
+
# make sure that modules are searched in the order local then perl
BEGIN {
# root of directory tree for this system
unshift @INC, "$root/perl"; # this IS the right way round!
unshift @INC, "$root/local";
-# require Exporter;
-# $Exporter::Verbose = 1;
+ # try to create and lock a lockfile (this isn't atomic but
+ # should do for now
+ $lockfn = "$root/perl/cluster.lock"; # lock file name
+ if (-e $lockfn) {
+ open(CLLOCK, "$lockfn") or die "Can't open Lockfile ($lockfn) $!";
+ my $pid = <CLLOCK>;
+ chomp $pid;
+ die "Lockfile ($lockfn) and process $pid exist, another cluster running?" if kill 0, $pid;
+ close CLLOCK;
+ }
+ open(CLLOCK, ">$lockfn") or die "Can't open Lockfile ($lockfn) $!";
+ print CLLOCK "$$\n";
+ close CLLOCK;
}
use Msg;
use DXVars;
use DXDebug;
use DXLog;
+use DXLogPrint;
use DXUtil;
use DXChannel;
use DXUser;
use Bands;
use Geomag;
use CmdAlias;
+use Local;
+use Fcntl ':flock';
+
use Carp;
package main;
@inqueue = (); # the main input queue, an array of hashes
$systime = 0; # the time now (in seconds)
-$version = 1.5; # the version no of the software
+$version = "1.23"; # the version no of the software
$starttime = 0; # the starting time of the cluster
-
+$lockfn = "cluster.lock"; # lock file name
+
# handle disconnections
sub disconnect
{
$dxchan->disconnect();
}
+# send a message to call on conn and disconnect
+sub already_conn
+{
+ my ($conn, $call, $mess) = @_;
+
+ dbg('chan', "-> D $call $mess\n");
+ $conn->send_now("D$call|$mess");
+ sleep(1);
+ dbg('chan', "-> Z $call bye\n");
+ $conn->send_now("Z$call|bye"); # this will cause 'client' to disconnect
+}
+
# handle incoming messages
sub rec
{
if (!defined $dxchan) {
my ($sort, $call, $line) = $msg =~ /^(\w)(\S+)\|(.*)$/;
- # is there one already connected?
- if (DXChannel->get($call)) {
- my $mess = DXM::msg($lang, 'conother', $call);
- dbg('chan', "-> D $call $mess\n");
- $conn->send_now("D$call|$mess");
- sleep(1);
- dbg('chan', "-> Z $call bye\n");
- $conn->send_now("Z$call|bye"); # this will cause 'client' to disconnect
- return;
+ # is there one already connected elsewhere in the cluster (and not a cluster)
+ my $user = DXUser->get($call);
+ if ($user) {
+ if (($user->sort eq 'A' || $call eq $myalias) && !DXCluster->get_exact($call)) {
+ ;
+ } else {
+ if (DXCluster->get($call) || DXChannel->get($call)) {
+ my $mess = DXM::msg($lang, $user->sort eq 'A' ? 'concluster' : 'conother', $call);
+ already_conn($conn, $call, $mess);
+ return;
+ }
+ }
+ $user->{lang} = $main::lang if !$user->{lang}; # to autoupdate old systems
+ } else {
+ if (DXCluster->get($call)) {
+ my $mess = DXM::msg($lang, 'conother', $call);
+ already_conn($conn, $call, $mess);
+ return;
+ }
+ $user = DXUser->new($call);
}
-
- # is there one already connected elsewhere in the cluster?
- if (DXCluster->get($call)) {
- my $mess = DXM::msg($lang, 'concluster', $call);
- dbg('chan', "-> D $call $mess\n");
- $conn->send_now("D$call|$mess");
- sleep(1);
- dbg('chan', "-> Z $call bye\n");
+
+ # is he locked out ?
+ if ($user->lockout) {
+ Log('DXCommand', "$call is locked out, disconnected");
$conn->send_now("Z$call|bye"); # this will cause 'client' to disconnect
return;
}
-
- my $user = DXUser->get($call);
- if (!defined $user) {
- $user = DXUser->new($call);
- } else {
- $user->{lang} = $main::lang if !$user->{lang}; # to autoupdate old systems
- }
-
-
+
# create the channel
$dxchan = DXCommandmode->new($call, $conn, $user) if ($user->sort eq 'U');
$dxchan = DXProt->new($call, $conn, $user) if ($user->sort eq 'A');
sub cease
{
my $dxchan;
+
+ eval {
+ Local::finish(); # end local processing
+ };
+ dbg('local', "Local::finish error $@") if $@;
+
foreach $dxchan (DXChannel->get_all()) {
- disconnect($dxchan);
+ disconnect($dxchan) unless $dxchan == $DXProt::me;
}
Log('cluster', "DXSpider V$version stopped");
+ unlink $lockfn;
exit(0);
}
# the reaper of children
sub reap
{
+ $SIG{'CHLD'} = \&reap;
my $cpid = wait;
}
my $data = $self->{data};
my $dxchan = $self->{dxchan};
- my ($sort, $call, $line) = $data =~ /^(\w)(\w+)\|(.*)$/;
+ my ($sort, $call, $line) = $data =~ /^(\w)(\S+)\|(.*)$/;
# do the really sexy console interface bit! (Who is going to do the TK interface then?)
- dbg('chan', "<- $sort $call $line\n");
+ dbg('chan', "<- $sort $call $line\n") unless $sort eq 'D';
# handle A records
my $user = $dxchan->user;
if ($sort eq 'A' || $sort eq 'O') {
$dxchan->start($line, $sort);
- } elsif ($sort eq 'D') {
+ } elsif ($sort eq 'I') {
die "\$user not defined for $call" if !defined $user;
# normal input
disconnect($dxchan) if ($dxchan->{state} eq 'bye');
} elsif ($sort eq 'Z') {
disconnect($dxchan);
+ } elsif ($sort eq 'D') {
+ ; # ignored (an echo)
} else {
print STDERR atime, " Unknown command letter ($sort) received from $call\n";
}
# read in command aliases
CmdAlias->init();
-# initialise the protocol engine
-DXProt->init();
-
# initialise the Geomagnetic data engine
Geomag->init();
# initial the Spot stuff
Spot->init();
+# initialise the protocol engine
+print "reading in duplicate spot and WWV info ...\n";
+DXProt->init();
+
+
# put in a DXCluster node for us here so we can add users and take them away
DXNode->new(0, $mycall, 0, 1, $DXProt::myprot_version);
# read in any existing message headers and clean out old crap
-print "reading existing message headers\n";
+print "reading existing message headers ...\n";
DXMsg->init();
DXMsg::clean_old();
# read in any cron jobs
-print "reading cron jobs\n";
+print "reading cron jobs ...\n";
DXCron->init();
+# starting local stuff
+print "doing local initialisation ...\n";
+eval {
+ Local::init();
+};
+dbg('local', "Local::init error $@") if $@;
+
+# print various flags
+#print "useful info - \$^D: $^D \$^W: $^W \$^S: $^S \$^P: $^P\n";
+
# this, such as it is, is the main loop!
print "orft we jolly well go ...\n";
for (;;) {
DXCommandmode::process(); # process ongoing command mode stuff
DXProt::process(); # process ongoing ak1a pcxx stuff
DXConnect::process();
+ eval {
+ Local::process(); # do any localised processing
+ };
+ dbg('local', "Local::process error $@") if $@;
}
if ($decease) {
last if --$decease <= 0;