1 #!/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 perlBEGIN { 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"; # do some validation of the input die "The directory $root doesn't exist, please RTFM" unless -d $root; die "$root/local doesn't exist, please RTFM" unless -d "$root/local"; die "$root/local/DXVars.pm doesn't exist, please RTFM" unless -e "$root/local/DXVars.pm"; mkdir "$root/local_cmd", 0777 unless -d "$root/local_cmd"; # try to create and lock a lockfile (this isn't atomic but # should do for now $lockfn = "$root/local/cluster.lck"; # 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; $is_win = ($^O =~ /^MS/ || $^O =~ /^OS-2/) ? 1 : 0; # is it Windows? $systime = time;}use DXVars;use Msg;use IntMsg;use Internet;use Listeners;use ExtMsg;use AGWConnect;use AGWMsg;use DXDebug;use DXLog;use DXLogPrint;use DXUtil;use DXChannel;use DXUser;use DXM;use DXCommandmode;use DXProtVars;use DXProtout;use DXProt;use DXMsg;use DXCron;use DXConnect;use DXBearing;use DXDb;use DXHash;use DXDupe;use Script;use Prefix;use Spot;use Bands;use Keps;use Minimuf;use Sun;use Geomag;use CmdAlias;use Filter;use AnnTalk;use BBS;use WCY;use BadWords;use Timer;use Route;use Route::Node;use Route::User;use Editable;use Mrtg;use USDB;use UDPMsg;use QSL;use RouteDB;use DXXml;use DXSql;use IsoTime;use Data::Dumper;use IO::File;use Fcntl ':flock';use POSIX ":sys_wait_h";use Version;use Local;package main;use strict;use vars qw(@inqueue $systime $starttime $lockfn @outstanding_connects $zombies $root @listeners $lang $myalias @debug $userfn $clusteraddr $clusterport $mycall $decease $is_win $routeroot $me $reqreg $bumpexisting $allowdxby $dbh $dsn $dbuser $dbpass $do_xml $systime_days $systime_daystart $can_encode );@inqueue = (); # the main input queue, an array of hashes$systime = 0; # the time now (in seconds)$starttime = 0; # the starting time of the cluster@outstanding_connects = (); # list of outstanding connects@listeners = (); # list of listeners$reqreg = 0; # 1 = registration required, 2 = deregister people$bumpexisting = 1; # 1 = allow new connection to disconnect old, 0 - don't allow it$allowdxby = 0; # 1 = allow "dx by <othercall>", 0 - don't allow it# send a message to call on conn and disconnectsub already_conn{ my ($conn, $call, $mess) = @_; $conn->disable_read(1); dbg("-> D $call $mess\n") if isdbg('chan'); $conn->send_now("D$call|$mess"); sleep(2); $conn->disconnect;}sub error_handler{ my $dxchan = shift; $dxchan->{conn}->set_error(undef) if exists $dxchan->{conn}; $dxchan->disconnect(1);}# handle incoming messagessub new_channel{ my ($conn, $msg) = @_; my ($sort, $call, $line) = DXChannel::decode_input(0, $msg); return unless defined $sort; unless (is_callsign($call)) { already_conn($conn, $call, DXM::msg($lang, "illcall", $call)); return; } # set up the basic channel info # is there one already connected to me - locally? my $user = DXUser->get_current($call); my $dxchan = DXChannel::get($call); if ($dxchan) { if ($user && $user->is_node) { already_conn($conn, $call, DXM::msg($lang, 'concluster', $call, $main::mycall)); return; } if ($bumpexisting) { my $ip = $conn->{peerhost} || 'unknown'; $dxchan->send_now('D', DXM::msg($lang, 'conbump', $call, $ip)); LogDbg('DXCommand', "$call bumped off by $ip, disconnected"); $dxchan->disconnect; } else { already_conn($conn, $call, DXM::msg($lang, 'conother', $call, $main::mycall)); return; } } # is he locked out ? my $basecall = $call; $basecall =~ s/-\d+$//; my $baseuser = DXUser->get_current($basecall); my $lock = $user->lockout if $user; if ($baseuser && $baseuser->lockout || $lock) { if (!$user || !defined $lock || $lock) { my $host = $conn->{peerhost} || "unknown"; LogDbg('DXCommand', "$call on $host is locked out, disconnected"); $conn->disconnect; return; } } if ($user) { $user->{lang} = $main::lang if !$user->{lang}; # to autoupdate old systems } else { $user = DXUser->new($call); } # create the channel if ($user->is_node) { $dxchan = DXProt->new($call, $conn, $user); } elsif ($user->is_user) { $dxchan = DXCommandmode->new($call, $conn, $user); } elsif ($user->is_bbs) { $dxchan = BBS->new($call, $conn, $user); } else { die "Invalid sort of user on $call = $sort"; } # 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) = @_; $dxchan->rec($msg);}); $dxchan->rec($msg);}sub login{ return \&new_channel;}# cease running this program, close down all the connections nicelysub cease{ my $dxchan; unless ($is_win) { $SIG{'TERM'} = 'IGNORE'; $SIG{'INT'} = 'IGNORE'; } DXUser::sync; eval { Local::finish(); # end local processing }; dbg("Local::finish error $@") if $@; # disconnect nodes foreach $dxchan (DXChannel::get_all_nodes) { $dxchan->disconnect(2) unless $dxchan == $main::me; } Msg->event_loop(100, 0.01); # disconnect users foreach $dxchan (DXChannel::get_all_users) { $dxchan->disconnect; } # disconnect AGW AGWMsg::finish(); # disconnect UDP customers UDPMsg::finish(); # end everything else Msg->event_loop(100, 0.01); DXUser::finish(); DXDupe::finish(); # close all databases DXDb::closeall; # close all listeners foreach my $l (@listeners) { $l->close_server; } LogDbg('cluster', "DXSpider V$version, build $build ended"); dbgclose(); Logclose(); $dbh->finish if $dbh; unlink $lockfn;# $SIG{__WARN__} = $SIG{__DIE__} = sub {my $a = shift; cluck($a); }; exit(0);}# the reaper of childrensub reap{ my $cpid; while (($cpid = waitpid(-1, WNOHANG)) > 0) { dbg("cpid: $cpid") if isdbg('reap');# Msg->pid_gone($cpid); $zombies-- if $zombies > 0; } dbg("cpid: $cpid") if isdbg('reap');}# this is where the input queue is dealt with and things are dispatched off to other parts of# the clustersub 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, $mins;}sub AGWrestart{ AGWMsg::init(\&new_channel);}############################################################### The start of the main line of code##############################################################$starttime = $systime = time;$systime_days = int ($systime / 86400);$systime_daystart = $systime_days * 86400;$lang = 'en' unless $lang;unless ($DB::VERSION) { $SIG{INT} = $SIG{TERM} = \&cease;}# open the debug file, set various FHs to be unbuffereddbginit(\&DXCommandmode::broadcast_debug);foreach (@debug) { dbgadd($_);}STDOUT->autoflush(1);# try to load the databaseif (DXSql::init($dsn)) { $dbh = DXSql->new($dsn); $dbh = $dbh->connect($dsn, $dbuser, $dbpass) if $dbh;}# try to load Encode{ local $^W = 0; my $w = $SIG{__DIE__}; $SIG{__DIE__} = 'IGNORE'; eval { require Encode; }; unless ($@) { import Encode; $can_encode = 1; } $SIG{__DIE__} = $w;}# try to load XML::SimpleDXXml::init();# bannermy ($year) = (gmtime)[5];$year += 1900;LogDbg('cluster', "DXSpider V$version, build $build started");dbg("Copyright (c) 1998-$year Dirk Koopman G1TLH");# load Prefixesdbg("loading prefixes ...");dbg(USDB::init());my $r = Prefix::init();confess $r if $r;# load band datadbg("loading band data ...");Bands::load();# initialise User file systemdbg("loading user file system ...");DXUser->init($userfn, 1);# look for the sysop and the alias user and complain if they aren't there{ my $ref = DXUser->get($mycall); die "$mycall missing, run the create_sysop.pl script and please RTFM" unless $ref && $ref->priv == 9; $ref = DXUser->get($myalias); die "$myalias missing, run the create_sysop.pl script and please RTFM" unless $ref && $ref->priv == 9;}# start listening for incoming messages/connectsdbg("starting listeners ...");my $conn = IntMsg->new_server($clusteraddr, $clusterport, \&login);$conn->conns("Server $clusteraddr/$clusterport using IntMsg");push @listeners, $conn;dbg("Internal port: $clusteraddr $clusterport using IntMsg");foreach my $l (@main::listen) { no strict 'refs'; my $pkg = $l->[2] || 'ExtMsg'; my $login = $l->[3] || 'login'; $conn = $pkg->new_server($l->[0], $l->[1], \&{"${pkg}::${login}"}); $conn->conns("Server $l->[0]/$l->[1] using ${pkg}::${login}"); push @listeners, $conn; dbg("External Port: $l->[0] $l->[1] using ${pkg}::${login}");}dbg("AGW Listener") if $AGWMsg::enable;AGWrestart();dbg("UDP Listener") if $UDPMsg::enable;UDPMsg::init(\&new_channel);# load bad wordsdbg("load badwords: " . (BadWords::load or "Ok"));# prime some signalsunless ($DB::VERSION) { $SIG{INT} = $SIG{TERM} = sub { $decease = 1 };}unless ($is_win) { $SIG{HUP} = 'IGNORE'; $SIG{CHLD} = sub { $zombies++ }; $SIG{PIPE} = sub { dbg("Broken PIPE signal received"); }; $SIG{IO} = sub { dbg("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("Catching SIG $_") if isdbg('chan'); $SIG{$_} = sub { my $sig = shift; DXDebug::confess("Caught signal $sig"); }; } }}# start dupe systemdbg("Starting Dupe system");DXDupe::init();# read in system messagesdbg("Read in Messages");DXM->init();# read in command aliasesdbg("Read in Aliases");CmdAlias->init();# initialise the Geomagnetic data enginedbg("Start WWV");Geomag->init();dbg("Start WCY");WCY->init();# initial the Spot stuffdbg("Starting DX Spot system");Spot->init();# initialise the protocol enginedbg("Start Protocol Engines ...");DXProt->init();# put in a DXCluster node for us here so we can add users and take them away$routeroot = Route::Node->new($mycall, $version*100+5300, Route::here($main::me->here)|Route::conf($main::me->conf));$routeroot->do_pc9x(1);$routeroot->via_pc92(1);# make sure that there is a routing OUTPUT node default file#unless (Filter::read_in('route', 'node_default', 0)) {# my $dxcc = $main::me->dxcc;# $Route::filterdef->cmd($main::me, 'route', 'accept', "node_default call $mycall" );#}# read in any existing message headers and clean out old crapdbg("reading existing message headers ...");DXMsg->init();DXMsg::clean_old();# read in any cron jobsdbg("reading cron jobs ...");DXCron->init();# read in database descriptorsdbg("reading database descriptors ...");DXDb::load();# starting local stuffdbg("doing local initialisation ...");QSL::init(1);eval { Local::init();};dbg("Local::init error $@") if $@;# this, such as it is, is the main loop!dbg("orft we jolly well go ...");my $script = new Script "startup";$script->run($main::me) if $script;#open(DB::OUT, "|tee /tmp/aa");for (;;) {# $DB::trace = 1; Msg->event_loop(10, 0.010); my $timenow = time; DXChannel::process();# $DB::trace = 0; # do timed stuff, ongoing processing happens one a second if ($timenow != $systime) { reap() if $zombies; $systime = $timenow; my $days = int ($systime / 86400); if ($systime_days != $days) { $systime_days = $days; $systime_daystart = $days * 86400; } IsoTime::update($systime); DXCron::process(); # do cron jobs DXCommandmode::process(); # process ongoing command mode stuff DXXml::process(); 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::process error $@") if $@; } if ($decease) { last if --$decease <= 0; }}cease(0);exit(0);