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) $!";
71 @inqueue = (); # the main input queue, an array of hashes
72 $systime = 0; # the time now (in seconds)
73 $version = "1.36"; # the version no of the software
74 $starttime = 0; # the starting time of the cluster
75 $lockfn = "cluster.lock"; # lock file name
76 @outstanding_connects = (); # list of outstanding connects
78 # handle disconnections
82 return if !defined $dxchan;
83 $dxchan->disconnect();
86 # send a message to call on conn and disconnect
89 my ($conn, $call, $mess) = @_;
91 dbg('chan', "-> D $call $mess\n");
92 $conn->send_now("D$call|$mess");
94 dbg('chan', "-> Z $call bye\n");
95 $conn->send_now("Z$call|bye"); # this will cause 'client' to disconnect
100 # handle incoming messages
103 my ($conn, $msg, $err) = @_;
104 my $dxchan = DXChannel->get_by_cnum($conn); # get the dxconnnect object for this message
106 if (defined $err && $err) {
113 # set up the basic channel info - this needs a bit more thought - there is duplication here
114 if (!defined $dxchan) {
115 my ($sort, $call, $line) = $msg =~ /^(\w)(\S+)\|(.*)$/;
116 my ($scall, $ssid) = split /-/, $call;
118 # adjust the callsign if it has an SSID, SSID <= 8 are legal > 8 are netrom connections
120 $ssid = 15 if $ssid > 15;
123 $call = "$scall-$ssid";
127 # is there one already connected to me - locally?
128 my $user = DXUser->get($call);
129 if (DXChannel->get($call)) {
130 my $mess = DXM::msg($lang, ($user && $user->sort eq 'A') ? 'concluster' : 'conother', $call);
131 already_conn($conn, $call, $mess);
135 # is there one already connected elsewhere in the cluster?
137 if (($user->sort eq 'A' || $call eq $myalias) && !DXCluster->get_exact($call)) {
140 if (DXCluster->get_exact($call)) {
141 my $mess = DXM::msg($lang, $user->sort eq 'A' ? 'concluster' : 'conother', $call);
142 already_conn($conn, $call, $mess);
146 $user->{lang} = $main::lang if !$user->{lang}; # to autoupdate old systems
148 if (DXCluster->get_exact($call)) {
149 my $mess = DXM::msg($lang, 'conother', $call);
150 already_conn($conn, $call, $mess);
153 $user = DXUser->new($call);
157 if ($user->lockout) {
158 Log('DXCommand', "$call is locked out, disconnected");
159 $conn->send_now("Z$call|bye"); # this will cause 'client' to disconnect
164 $dxchan = DXCommandmode->new($call, $conn, $user) if ($user->sort eq 'U');
165 $dxchan = DXProt->new($call, $conn, $user) if ($user->sort eq 'A');
166 $dxchan = BBS->new($call, $conn, $user) if ($user->sort eq 'B');
167 die "Invalid sort of user on $call = $sort" if !$dxchan;
170 # queue the message and the channel object for later processing
172 my $self = bless {}, "inqueue";
173 $self->{dxchan} = $dxchan;
174 $self->{data} = $msg;
175 push @inqueue, $self;
184 # cease running this program, close down all the connections nicely
189 $SIG{'TERM'} = 'IGNORE';
190 $SIG{'INT'} = 'IGNORE';
193 Local::finish(); # end local processing
195 dbg('local', "Local::finish error $@") if $@;
198 foreach $dxchan (DXChannel->get_all()) {
199 next unless $dxchan->is_ak1a;
200 disconnect($dxchan) unless $dxchan == $DXProt::me;
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);
210 foreach $dxchan (DXChannel->get_all()) {
211 next if $dxchan->is_ak1a;
212 disconnect($dxchan) unless $dxchan == $DXProt::me;
214 Msg->event_loop(1, 0.05);
215 Msg->event_loop(1, 0.05);
216 Msg->event_loop(1, 0.05);
217 Msg->event_loop(1, 0.05);
218 Msg->event_loop(1, 0.05);
219 Msg->event_loop(1, 0.05);
222 # close all databases
225 dbg('chan', "DXSpider version $version ended");
226 Log('cluster', "DXSpider V$version stopped");
230 # $SIG{__WARN__} = $SIG{__DIE__} = sub {my $a = shift; cluck($a); };
234 # the reaper of children
237 $SIG{'CHLD'} = \&reap;
239 @outstanding_connects = grep {$_->{pid} != $cpid} @outstanding_connects;
242 # this is where the input queue is dealt with and things are dispatched off to other parts of
246 my $self = shift @inqueue;
249 my $data = $self->{data};
250 my $dxchan = $self->{dxchan};
251 my ($sort, $call, $line) = $data =~ /^(\w)([A-Z0-9\-]+)\|(.*)$/;
254 # the above regexp must work
255 return unless ($sort && $call && $line);
257 # translate any crappy characters into hex characters
258 if ($line =~ /[\x00-\x06\x08\x0a-\x1f\x7f-\xff]/o) {
259 $line =~ s/([\x00-\x1f\x7f-\xff])/uc sprintf("%%%02x",ord($1))/eg;
262 # do the really sexy console interface bit! (Who is going to do the TK interface then?)
263 dbg('chan', "<- $sort $call $line\n") unless $sort eq 'D';
266 my $user = $dxchan->user;
267 if ($sort eq 'A' || $sort eq 'O') {
268 $dxchan->start($line, $sort);
269 } elsif ($sort eq 'I') {
270 die "\$user not defined for $call" if !defined $user;
272 $dxchan->normal($line);
273 disconnect($dxchan) if ($dxchan->{state} eq 'bye');
274 } elsif ($sort eq 'Z') {
275 $dxchan->conn(undef);
277 } elsif ($sort eq 'D') {
278 ; # ignored (an echo)
280 print STDERR atime, " Unknown command letter ($sort) received from $call\n";
286 my $t = $systime - $starttime;
287 my $days = int $t / 86400;
289 my $hours = int $t / 3600;
291 my $mins = int $t / 60;
292 return sprintf "%d %02d:%02d", $days, $hours, $mins;
294 #############################################################
296 # The start of the main line of code
298 #############################################################
300 $starttime = $systime = time;
302 # open the debug file, set various FHs to be unbuffered
307 STDOUT->autoflush(1);
309 Log('cluster', "DXSpider V$version started");
312 print "DXSpider DX Cluster Version $version\nCopyright (c) 1998-1999 Dirk Koopman G1TLH\n";
315 print "loading prefixes ...\n";
319 print "loading band data ...\n";
322 # initialise User file system
323 print "loading user file system ...\n";
324 DXUser->init($userfn, 1);
326 # start listening for incoming messages/connects
327 print "starting listener ...\n";
328 Msg->new_server("$clusteraddr", $clusterport, \&login);
331 $SIG{'INT'} = \&cease;
332 $SIG{'TERM'} = \&cease;
333 $SIG{'HUP'} = 'IGNORE';
334 $SIG{'CHLD'} = \&reap;
336 # read in system messages
339 # read in command aliases
342 # initialise the Geomagnetic data engine
345 # initial the Spot stuff
348 # initialise the protocol engine
349 print "reading in duplicate spot and WWV info ...\n";
353 # put in a DXCluster node for us here so we can add users and take them away
354 DXNode->new(0, $mycall, 0, 1, $DXProt::myprot_version);
356 # read in any existing message headers and clean out old crap
357 print "reading existing message headers ...\n";
361 # read in any cron jobs
362 print "reading cron jobs ...\n";
365 # read in database descriptors
366 print "reading database descriptors ...\n";
369 # starting local stuff
370 print "doing local initialisation ...\n";
374 dbg('local', "Local::init error $@") if $@;
376 # print various flags
377 #print "useful info - \$^D: $^D \$^W: $^W \$^S: $^S \$^P: $^P\n";
379 # this, such as it is, is the main loop!
380 print "orft we jolly well go ...\n";
381 dbg('chan', "DXSpider version $version started...");
384 Msg->event_loop(1, 0.1);
386 process_inqueue(); # read in lines from the input queue and despatch them
388 # do timed stuff, ongoing processing happens one a second
389 if ($timenow != $systime) {
393 DXCron::process(); # do cron jobs
394 DXCommandmode::process(); # process ongoing command mode stuff
395 DXProt::process(); # process ongoing ak1a pcxx stuff
396 DXConnect::process();
400 Local::process(); # do any localised processing
402 dbg('local', "Local::process error $@") if $@;
405 last if --$decease <= 0;