3 # This is the DX cluster 'daemon'. It sits in the middle of its little
4 # web of client routines sucking and blowing data where it may.
6 # Hence the name of 'spider' (although it may become 'dxspider')
8 # Copyright (c) 1998 Dirk Koopman G1TLH
15 # make sure that modules are searched in the order local then perl
19 # root of directory tree for this system
21 $root = $ENV{'DXSPIDER_ROOT'} if $ENV{'DXSPIDER_ROOT'};
23 unshift @INC, "$root/perl"; # this IS the right way round!
24 unshift @INC, "$root/local";
26 # try to create and lock a lockfile (this isn't atomic but
28 $lockfn = "$root/perl/cluster.lock"; # lock file name
30 open(CLLOCK, "$lockfn") or die "Can't open Lockfile ($lockfn) $!";
33 die "Lockfile ($lockfn) and process $pid exist, another cluster running?" if kill 0, $pid;
36 open(CLLOCK, ">$lockfn") or die "Can't open Lockfile ($lockfn) $!";
69 @inqueue = (); # the main input queue, an array of hashes
70 $systime = 0; # the time now (in seconds)
71 $version = "1.35"; # the version no of the software
72 $starttime = 0; # the starting time of the cluster
73 $lockfn = "cluster.lock"; # lock file name
75 # handle disconnections
79 return if !defined $dxchan;
80 $dxchan->disconnect();
83 # send a message to call on conn and disconnect
86 my ($conn, $call, $mess) = @_;
88 dbg('chan', "-> D $call $mess\n");
89 $conn->send_now("D$call|$mess");
91 dbg('chan', "-> Z $call bye\n");
92 $conn->send_now("Z$call|bye"); # this will cause 'client' to disconnect
97 # handle incoming messages
100 my ($conn, $msg, $err) = @_;
101 my $dxchan = DXChannel->get_by_cnum($conn); # get the dxconnnect object for this message
103 if (defined $err && $err) {
104 disconnect($dxchan) if defined $dxchan;
108 # set up the basic channel info - this needs a bit more thought - there is duplication here
109 if (!defined $dxchan) {
110 my ($sort, $call, $line) = $msg =~ /^(\w)(\S+)\|(.*)$/;
112 # is there one already connected to me ?
113 my $user = DXUser->get($call);
114 if (DXChannel->get($call)) {
115 my $mess = DXM::msg($lang, $user->sort eq 'A' ? 'concluster' : 'conother', $call);
116 already_conn($conn, $call, $mess);
120 # is there one already connected elsewhere in the cluster (and not a cluster)
122 if (($user->sort eq 'A' || $call eq $myalias) && !DXCluster->get_exact($call)) {
125 if (DXCluster->get($call) || DXChannel->get($call)) {
126 my $mess = DXM::msg($lang, $user->sort eq 'A' ? 'concluster' : 'conother', $call);
127 already_conn($conn, $call, $mess);
131 $user->{lang} = $main::lang if !$user->{lang}; # to autoupdate old systems
133 if (DXCluster->get($call)) {
134 my $mess = DXM::msg($lang, 'conother', $call);
135 already_conn($conn, $call, $mess);
138 $user = DXUser->new($call);
142 if ($user->lockout) {
143 Log('DXCommand', "$call is locked out, disconnected");
144 $conn->send_now("Z$call|bye"); # this will cause 'client' to disconnect
149 $dxchan = DXCommandmode->new($call, $conn, $user) if ($user->sort eq 'U');
150 $dxchan = DXProt->new($call, $conn, $user) if ($user->sort eq 'A');
151 $dxchan = BBS->new($call, $conn, $user) if ($user->sort eq 'B');
152 die "Invalid sort of user on $call = $sort" if !$dxchan;
155 # queue the message and the channel object for later processing
157 my $self = bless {}, "inqueue";
158 $self->{dxchan} = $dxchan;
159 $self->{data} = $msg;
160 push @inqueue, $self;
169 # cease running this program, close down all the connections nicely
174 $SIG{'TERM'} = 'IGNORE';
175 $SIG{'INT'} = 'IGNORE';
178 Local::finish(); # end local processing
180 dbg('local', "Local::finish error $@") if $@;
183 foreach $dxchan (DXChannel->get_all()) {
184 next if $dxchan->is_ak1a;
185 disconnect($dxchan) unless $dxchan == $DXProt::me;
187 Msg->event_loop(1, 0.05);
188 Msg->event_loop(1, 0.05);
189 Msg->event_loop(1, 0.05);
190 Msg->event_loop(1, 0.05);
191 Msg->event_loop(1, 0.05);
192 Msg->event_loop(1, 0.05);
195 foreach $dxchan (DXChannel->get_all()) {
196 next unless $dxchan->is_ak1a;
197 disconnect($dxchan) unless $dxchan == $DXProt::me;
199 Msg->event_loop(1, 0.05);
200 Msg->event_loop(1, 0.05);
201 Msg->event_loop(1, 0.05);
202 Msg->event_loop(1, 0.05);
203 Msg->event_loop(1, 0.05);
204 Msg->event_loop(1, 0.05);
205 Msg->event_loop(1, 0.05);
206 Msg->event_loop(1, 0.05);
207 Msg->event_loop(1, 0.05);
208 Msg->event_loop(1, 0.05);
209 Msg->event_loop(1, 0.05);
210 Msg->event_loop(1, 0.05);
213 # close all databases
216 dbg('chan', "DXSpider version $version ended");
217 Log('cluster', "DXSpider V$version stopped");
221 # $SIG{__WARN__} = $SIG{__DIE__} = sub {my $a = shift; cluck($a); };
225 # the reaper of children
228 $SIG{'CHLD'} = \&reap;
232 # this is where the input queue is dealt with and things are dispatched off to other parts of
236 my $self = shift @inqueue;
239 my $data = $self->{data};
240 my $dxchan = $self->{dxchan};
241 my ($sort, $call, $line) = $data =~ /^(\w)([A-Z0-9\-]+)\|(.*)$/;
244 # the above regexp must work
245 return unless ($sort && $call && $line);
247 # translate any crappy characters into hex characters
248 if ($line =~ /[\x00-\x06\x08\x0a-\x1f\x7f-\xff]/o) {
249 $line =~ s/([\x00-\x1f\x7f-\xff])/uc sprintf("%%%02x",ord($1))/eg;
252 # do the really sexy console interface bit! (Who is going to do the TK interface then?)
253 dbg('chan', "<- $sort $call $line\n") unless $sort eq 'D';
256 my $user = $dxchan->user;
257 if ($sort eq 'A' || $sort eq 'O') {
258 $dxchan->start($line, $sort);
259 } elsif ($sort eq 'I') {
260 die "\$user not defined for $call" if !defined $user;
262 $dxchan->normal($line);
263 disconnect($dxchan) if ($dxchan->{state} eq 'bye');
264 } elsif ($sort eq 'Z') {
266 } elsif ($sort eq 'D') {
267 ; # ignored (an echo)
269 print STDERR atime, " Unknown command letter ($sort) received from $call\n";
275 my $t = $systime - $starttime;
276 my $days = int $t / 86400;
278 my $hours = int $t / 3600;
280 my $mins = int $t / 60;
281 return sprintf "%d %02d:%02d", $days, $hours, $mins;
283 #############################################################
285 # The start of the main line of code
287 #############################################################
289 $starttime = $systime = time;
291 # open the debug file, set various FHs to be unbuffered
296 STDOUT->autoflush(1);
298 Log('cluster', "DXSpider V$version started");
301 print "DXSpider DX Cluster Version $version\nCopyright (c) 1998 Dirk Koopman G1TLH\n";
304 print "loading prefixes ...\n";
308 print "loading band data ...\n";
311 # initialise User file system
312 print "loading user file system ...\n";
313 DXUser->init($userfn, 1);
315 # start listening for incoming messages/connects
316 print "starting listener ...\n";
317 Msg->new_server("$clusteraddr", $clusterport, \&login);
320 $SIG{'INT'} = \&cease;
321 $SIG{'TERM'} = \&cease;
322 $SIG{'HUP'} = 'IGNORE';
323 $SIG{'CHLD'} = \&reap;
325 # read in system messages
328 # read in command aliases
331 # initialise the Geomagnetic data engine
334 # initial the Spot stuff
337 # initialise the protocol engine
338 print "reading in duplicate spot and WWV info ...\n";
342 # put in a DXCluster node for us here so we can add users and take them away
343 DXNode->new(0, $mycall, 0, 1, $DXProt::myprot_version);
345 # read in any existing message headers and clean out old crap
346 print "reading existing message headers ...\n";
350 # read in any cron jobs
351 print "reading cron jobs ...\n";
354 # read in database descriptors
355 print "reading database descriptors ...\n";
358 # starting local stuff
359 print "doing local initialisation ...\n";
363 dbg('local', "Local::init error $@") if $@;
365 # print various flags
366 #print "useful info - \$^D: $^D \$^W: $^W \$^S: $^S \$^P: $^P\n";
368 # this, such as it is, is the main loop!
369 print "orft we jolly well go ...\n";
370 dbg('chan', "DXSpider version $version started...");
373 Msg->event_loop(1, 0.1);
375 process_inqueue(); # read in lines from the input queue and despatch them
377 # do timed stuff, ongoing processing happens one a second
378 if ($timenow != $systime) {
382 DXCron::process(); # do cron jobs
383 DXCommandmode::process(); # process ongoing command mode stuff
384 DXProt::process(); # process ongoing ak1a pcxx stuff
385 DXConnect::process();
389 Local::process(); # do any localised processing
391 dbg('local', "Local::process error $@") if $@;
394 last if --$decease <= 0;