-#!/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.
-#
-# Hence the name of 'spider' (although it may become 'dxspider')
-#
-# Copyright (c) 1998 Dirk Koopman G1TLH
-#
-# $Id$
-#
-
-require 5.004;
-
-# make sure that modules are searched in the order local then perl
-BEGIN {
- umask 002;
-
- # root of directory tree for this system
- $root = "/spider";
- $root = $ENV{'DXSPIDER_ROOT'} if $ENV{'DXSPIDER_ROOT'};
-
- unshift @INC, "$root/perl"; # this IS the right way round!
- unshift @INC, "$root/local";
-
- # try to create and lock a lockfile (this isn't atomic but
- # should do for now
- my $lockfn = "$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 IntMsg;
-use ExtMsg;
-use AGWMsg;
-use DXVars;
-use DXDebug;
-use DXLog;
-use DXLogPrint;
-use DXUtil;
-use DXChannel;
-use DXUser;
-use DXM;
-use DXCommandmode;
-use DXProt;
-use DXMsg;
-use DXCluster;
-use DXCron;
-use DXConnect;
-use Prefix;
-use Bands;
-use Geomag;
-use CmdAlias;
-use Filter;
-use DXDb;
-use AnnTalk;
-use WCY;
-use DXDupe;
-use BadWords;
-
-use Data::Dumper;
-use IO::File;
-use Fcntl ':flock';
-use POSIX ":sys_wait_h";
-
-use Local;
-
-package main;
-
-use strict;
-use vars qw(@inqueue $systime $version $starttime $lockfn @outstanding_connects
- $zombies $root @listeners $lang $myalias @debug $userfn $clusteraddr
- $clusterport $mycall $decease $build
- );
-
-@inqueue = (); # the main input queue, an array of hashes
-$systime = 0; # the time now (in seconds)
-$version = "1.47"; # the version no of the software
-$starttime = 0; # the starting time of the cluster
-$lockfn = "cluster.lock"; # lock file name
-#@outstanding_connects = (); # list of outstanding connects
-@listeners = (); # list of listeners
-
-
-# send a message to call on conn and disconnect
-sub already_conn
-{
- my ($conn, $call, $mess) = @_;
-
- dbg('chan', "-> D $call $mess\n");
- $conn->send_now("D$call|$mess");
- Msg->sleep(2);
- $conn->disconnect;
-}
-
-sub error_handler
-{
- my $dxchan = shift;
- $dxchan->{conn}->set_error(undef) if exists $dxchan->{conn};
- $dxchan->disconnect(1);
-}
-
-# handle incoming messages
-sub new_channel
-{
- my ($conn, $msg) = @_;
- my ($sort, $call, $line) = DXChannel::decode_input(0, $msg);
- return unless defined $sort;
-
- # set up the basic channel info
- # is there one already connected to me - locally?
- my $user = DXUser->get($call);
- my $dxchan = DXChannel->get($call);
- if ($dxchan) {
- my $mess = DXM::msg($lang, ($user && $user->is_node) ? 'concluster' : 'conother', $call, $main::mycall);
- already_conn($conn, $call, $mess);
- return;
- }
-
- # is there one already connected elsewhere in the cluster?
- if ($user) {
- if (($user->is_node || $call eq $myalias) && !DXCluster->get_exact($call)) {
- ;
- } else {
- if (my $ref = DXCluster->get_exact($call)) {
- my $mess = DXM::msg($lang, 'concluster', $call, $ref->mynode->call);
- already_conn($conn, $call, $mess);
- return;
- }
- }
- $user->{lang} = $main::lang if !$user->{lang}; # to autoupdate old systems
- } else {
- if (my $ref = DXCluster->get_exact($call)) {
- my $mess = DXM::msg($lang, 'concluster', $call, $ref->mynode->call);
- already_conn($conn, $call, $mess);
- return;
- }
- $user = DXUser->new($call);
- }
-
- # is he locked out ?
- if ($user->lockout) {
- Log('DXCommand', "$call is locked out, disconnected");
- $conn->disconnect;
- return;
- }
-
- # create the channel
- $dxchan = DXCommandmode->new($call, $conn, $user) if $user->is_user;
- $dxchan = DXProt->new($call, $conn, $user) if $user->is_node;
- $dxchan = BBS->new($call, $conn, $user) if $user->is_bbs;
- die "Invalid sort of user on $call = $sort" if !$dxchan;
-
- # check that the conn has a callsign
- $conn->conns($call) if $conn->isa('IntMsg');
-
- # set callbacks
- $conn->set_error(sub {error_handler($dxchan)});
- $conn->set_rproc(sub {my ($conn,$msg) = @_; rec($dxchan, $conn, $msg);});
- rec($dxchan, $conn, $msg);
-}
-
-sub rec
-{
- my ($dxchan, $conn, $msg) = @_;
-
- # queue the message and the channel object for later processing
- if (defined $msg) {
- my $self = bless {}, "inqueue";
- $self->{dxchan} = $dxchan;
- $self->{data} = $msg;
- push @inqueue, $self;
- }
-}
-
-sub login
-{
- return \&new_channel;
-}
-
-# cease running this program, close down all the connections nicely
-sub cease
-{
- my $dxchan;
-
- $SIG{'TERM'} = 'IGNORE';
- $SIG{'INT'} = 'IGNORE';
-
- DXUser::sync;
-
- eval {
- Local::finish(); # end local processing
- };
- dbg('local', "Local::finish error $@") if $@;
-
- # disconnect nodes
- foreach $dxchan (DXChannel->get_all()) {
- next unless $dxchan->is_node;
- $dxchan->disconnect unless $dxchan == $DXProt::me;
- }
- Msg->event_loop(1, 0.05);
- Msg->event_loop(1, 0.05);
-
- # disconnect users
- foreach $dxchan (DXChannel->get_all()) {
- next if $dxchan->is_node;
- $dxchan->disconnect unless $dxchan == $DXProt::me;
- }
-
- # disconnect AGW
- AGWMsg::finish();
-
- Msg->event_loop(1, 0.05);
- Msg->event_loop(1, 0.05);
- Msg->event_loop(1, 0.05);
- Msg->event_loop(1, 0.05);
- Msg->event_loop(1, 0.05);
- Msg->event_loop(1, 0.05);
- DXUser::finish();
- DXDupe::finish();
-
- # close all databases
- DXDb::closeall;
-
- # close all listeners
- for (@listeners) {
- $_->close_server;
- }
-
- dbg('chan', "DXSpider version $version, build $build ended");
- Log('cluster', "DXSpider V$version, build $build ended");
- dbgclose();
- Logclose();
- unlink $lockfn;
-# $SIG{__WARN__} = $SIG{__DIE__} = sub {my $a = shift; cluck($a); };
- exit(0);
-}
-
-# the reaper of children
-sub reap
-{
- my $cpid;
- while (($cpid = waitpid(-1, WNOHANG)) > 0) {
- dbg('reap', "cpid: $cpid");
-# Msg->pid_gone($cpid);
- $zombies-- if $zombies > 0;
- }
- dbg('reap', "cpid: $cpid");
-}
-
-# this is where the input queue is dealt with and things are dispatched off to other parts of
-# the cluster
-sub process_inqueue
-{
- my $self = shift @inqueue;
- return if !$self;
-
- my $data = $self->{data};
- my $dxchan = $self->{dxchan};
- my $error;
- my ($sort, $call, $line) = DXChannel::decode_input($dxchan, $data);
- return unless defined $sort;
-
- # do the really sexy console interface bit! (Who is going to do the TK interface then?)
- 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 'I') {
- die "\$user not defined for $call" if !defined $user;
- # normal input
- $dxchan->normal($line);
- $dxchan->disconnect if ($dxchan->{state} eq 'bye');
- } elsif ($sort eq 'Z') {
- $dxchan->disconnect;
- } elsif ($sort eq 'D') {
- ; # ignored (an echo)
- } else {
- print STDERR atime, " Unknown command letter ($sort) received from $call\n";
- }
-}
-
-sub uptime
-{
- my $t = $systime - $starttime;
- my $days = int $t / 86400;
- $t -= $days * 86400;
- my $hours = int $t / 3600;
- $t -= $hours * 3600;
- my $mins = int $t / 60;
- return sprintf "%d %02d:%02d", $days, $hours, $mins;
-}
-#############################################################
-#
-# The start of the main line of code
-#
-#############################################################
-
-$starttime = $systime = time;
-$lang = 'en' unless $lang;
-
-# open the debug file, set various FHs to be unbuffered
-dbginit();
-foreach (@debug) {
- dbgadd($_);
-}
-STDOUT->autoflush(1);
-
-# calculate build number
-$build = $main::version;
-
-if (opendir(DIR, "$main::root/perl")) {
- my @d = readdir(DIR);
- closedir(DIR);
- foreach my $fn (@d) {
- if ($fn =~ /^cluster\.pl$/ || $fn =~ /\.pm$/) {
- my $f = new IO::File "$main::root/perl/$fn" or next;
- while (<$f>) {
- if (/^#\s+\$Id:\s+[\w\._]+,v\s+(\d+\.\d+)/ ) {
- $build += $1;
- last;
- }
- }
- $f->close;
- }
- }
-}
-
-Log('cluster', "DXSpider V$version, build $build started");
-
-# banner
-dbg('err', "DXSpider Version $version, build $build started", "Copyright (c) 1998-2001 Dirk Koopman G1TLH");
-
-# load Prefixes
-dbg('err', "loading prefixes ...");
-Prefix::load();
-
-# load band data
-dbg('err', "loading band data ...");
-Bands::load();
-
-# initialise User file system
-dbg('err', "loading user file system ...");
-DXUser->init($userfn, 1);
-
-# start listening for incoming messages/connects
-use Listeners;
-
-dbg('err', "starting listeners ...");
-my $conn = IntMsg->new_server($clusteraddr, $clusterport, \&login);
-$conn->conns("Server $clusteraddr/$clusterport");
-push @listeners, $conn;
-dbg('err', "Internal port: $clusteraddr $clusterport");
-for (@main::listen) {
- $conn = ExtMsg->new_server($_->[0], $_->[1], \&login);
- $conn->conns("Server $_->[0]/$_->[1]");
- push @listeners, $conn;
- dbg('err', "External Port: $_->[0] $_->[1]");
-}
-AGWMsg::init(\&new_channel);
-
-# load bad words
-dbg('err', "load badwords: " . (BadWords::load or "Ok"));
-
-# prime some signals
-unless ($^O =~ /^MS/) {
- unless ($DB::VERSION) {
- $SIG{INT} = \&cease;
- $SIG{TERM} = \&cease;
- }
- $SIG{HUP} = 'IGNORE';
- $SIG{CHLD} = sub { $zombies++ };
-
- $SIG{PIPE} = sub { dbg('err', "Broken PIPE signal received"); };
- $SIG{IO} = sub { dbg('err', "SIGIO received"); };
- $SIG{WINCH} = $SIG{STOP} = $SIG{CONT} = 'IGNORE';
- $SIG{KILL} = 'DEFAULT'; # as if it matters....
-
- # catch the rest with a hopeful message
- for (keys %SIG) {
- if (!$SIG{$_}) {
- # dbg('chan', "Catching SIG $_");
- $SIG{$_} = sub { my $sig = shift; DXDebug::confess("Caught signal $sig"); };
- }
- }
-}
-
-# start dupe system
-DXDupe::init();
-
-# read in system messages
-DXM->init();
-
-# read in command aliases
-CmdAlias->init();
-
-# initialise the Geomagnetic data engine
-Geomag->init();
-WCY->init();
-
-# initial the Spot stuff
-Spot->init();
-
-# initialise the protocol engine
-dbg('err', "reading in duplicate spot and WWV info ...");
-DXProt->init();
-
-# put in a DXCluster node for us here so we can add users and take them away
-DXNode->new($DXProt::me, $mycall, 0, 1, $DXProt::myprot_version);
-
-# read in any existing message headers and clean out old crap
-dbg('err', "reading existing message headers ...");
-DXMsg->init();
-DXMsg::clean_old();
-
-# read in any cron jobs
-dbg('err', "reading cron jobs ...");
-DXCron->init();
-
-# read in database descriptors
-dbg('err', "reading database descriptors ...");
-DXDb::load();
-
-# starting local stuff
-dbg('err', "doing local initialisation ...");
-eval {
- Local::init();
-};
-dbg('local', "Local::init error $@") if $@;
-
-# print various flags
-#dbg('err', "seful info - \$^D: $^D \$^W: $^W \$^S: $^S \$^P: $^P");
-
-# this, such as it is, is the main loop!
-dbg('err', "orft we jolly well go ...");
-
-#open(DB::OUT, "|tee /tmp/aa");
-
-for (;;) {
-# $DB::trace = 1;
-
- Msg->event_loop(10, 0.010);
- my $timenow = time;
- process_inqueue(); # read in lines from the input queue and despatch them
-# $DB::trace = 0;
-
- # do timed stuff, ongoing processing happens one a second
- if ($timenow != $systime) {
- reap if $zombies;
- $systime = $timenow;
- DXCron::process(); # do cron jobs
- DXCommandmode::process(); # process ongoing command mode stuff
- DXProt::process(); # process ongoing ak1a pcxx stuff
- DXConnect::process();
- DXMsg::process();
- DXDb::process();
- DXUser::process();
- DXDupe::process();
- AGWMsg::process();
-
- eval {
- Local::process(); # do any localised processing
- };
- dbg('local', "Local::process error $@") if $@;
- }
- if ($decease) {
- last if --$decease <= 0;
- }
-}
-cease(0);
-exit(0);
-
-