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 = "1.41"; # 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 $msg || (defined $err && $err)) {
115 # set up the basic channel info - this needs a bit more thought - there is duplication here
116 if (!defined $dxchan) {
117 my ($sort, $call, $line) = $msg =~ /^(\w)(\S+)\|(.*)$/;
119 # is there one already connected to me - locally?
120 my $user = DXUser->get($call);
121 if (DXChannel->get($call)) {
122 my $mess = DXM::msg($lang, ($user && $user->sort eq 'A') ? 'concluster' : 'conother', $call);
123 already_conn($conn, $call, $mess);
127 # is there one already connected elsewhere in the cluster?
129 if (($user->sort eq 'A' || $call eq $myalias) && !DXCluster->get_exact($call)) {
132 if (DXCluster->get_exact($call)) {
133 my $mess = DXM::msg($lang, $user->sort eq 'A' ? 'concluster' : 'conother', $call);
134 already_conn($conn, $call, $mess);
138 $user->{lang} = $main::lang if !$user->{lang}; # to autoupdate old systems
140 if (DXCluster->get_exact($call)) {
141 my $mess = DXM::msg($lang, 'conother', $call);
142 already_conn($conn, $call, $mess);
145 $user = DXUser->new($call);
149 if ($user->lockout) {
150 Log('DXCommand', "$call is locked out, disconnected");
151 $conn->send_now("Z$call|bye"); # this will cause 'client' to disconnect
156 $dxchan = DXCommandmode->new($call, $conn, $user) if ($user->sort eq 'U');
157 $dxchan = DXProt->new($call, $conn, $user) if ($user->sort eq 'A');
158 $dxchan = BBS->new($call, $conn, $user) if ($user->sort eq 'B');
159 die "Invalid sort of user on $call = $sort" if !$dxchan;
162 # queue the message and the channel object for later processing
164 my $self = bless {}, "inqueue";
165 $self->{dxchan} = $dxchan;
166 $self->{data} = $msg;
167 push @inqueue, $self;
176 # cease running this program, close down all the connections nicely
181 $SIG{'TERM'} = 'IGNORE';
182 $SIG{'INT'} = 'IGNORE';
185 Local::finish(); # end local processing
187 dbg('local', "Local::finish error $@") if $@;
190 foreach $dxchan (DXChannel->get_all()) {
191 next unless $dxchan->is_ak1a;
192 disconnect($dxchan) unless $dxchan == $DXProt::me;
194 Msg->event_loop(1, 0.05);
195 Msg->event_loop(1, 0.05);
196 Msg->event_loop(1, 0.05);
197 Msg->event_loop(1, 0.05);
198 Msg->event_loop(1, 0.05);
199 Msg->event_loop(1, 0.05);
202 foreach $dxchan (DXChannel->get_all()) {
203 next if $dxchan->is_ak1a;
204 disconnect($dxchan) unless $dxchan == $DXProt::me;
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);
211 Msg->event_loop(1, 0.05);
214 # close all databases
217 dbg('chan', "DXSpider version $version ended");
218 Log('cluster', "DXSpider V$version stopped");
222 # $SIG{__WARN__} = $SIG{__DIE__} = sub {my $a = shift; cluck($a); };
226 # the reaper of children
229 $SIG{'CHLD'} = \&reap;
231 @outstanding_connects = grep {$_->{pid} != $cpid} @outstanding_connects;
234 # this is where the input queue is dealt with and things are dispatched off to other parts of
238 my $self = shift @inqueue;
241 my $data = $self->{data};
242 my $dxchan = $self->{dxchan};
243 my ($sort, $call, $line) = $data =~ /^(\w)([^\|]+)\|(.*)$/;
246 # the above regexp must work
247 return unless ($sort && $call && $line);
249 # translate any crappy characters into hex characters
250 if ($line =~ /[\x00-\x06\x08\x0a-\x1f\x7f-\xff]/o) {
251 $line =~ s/([\x00-\x1f\x7f-\xff])/uc sprintf("%%%02x",ord($1))/eg;
254 # do the really sexy console interface bit! (Who is going to do the TK interface then?)
255 dbg('chan', "<- $sort $call $line\n") unless $sort eq 'D';
258 my $user = $dxchan->user;
259 if ($sort eq 'A' || $sort eq 'O') {
260 $dxchan->start($line, $sort);
261 } elsif ($sort eq 'I') {
262 die "\$user not defined for $call" if !defined $user;
264 $dxchan->normal($line);
265 disconnect($dxchan) if ($dxchan->{state} eq 'bye');
266 } elsif ($sort eq 'Z') {
267 $dxchan->conn(undef);
269 } elsif ($sort eq 'D') {
270 ; # ignored (an echo)
272 print STDERR atime, " Unknown command letter ($sort) received from $call\n";
278 my $t = $systime - $starttime;
279 my $days = int $t / 86400;
281 my $hours = int $t / 3600;
283 my $mins = int $t / 60;
284 return sprintf "%d %02d:%02d", $days, $hours, $mins;
286 #############################################################
288 # The start of the main line of code
290 #############################################################
292 $starttime = $systime = time;
294 # open the debug file, set various FHs to be unbuffered
299 STDOUT->autoflush(1);
301 Log('cluster', "DXSpider V$version started");
304 dbg('err', "DXSpider DX Cluster Version $version", "Copyright (c) 1998-2000 Dirk Koopman G1TLH");
307 dbg('err', "loading prefixes ...");
311 dbg('err', "loading band data ...");
314 # initialise User file system
315 dbg('err', "loading user file system ...");
316 DXUser->init($userfn, 1);
318 # start listening for incoming messages/connects
319 dbg('err', "starting listener ...");
320 Msg->new_server("$clusteraddr", $clusterport, \&login);
323 $SIG{'INT'} = \&cease;
324 $SIG{'TERM'} = \&cease;
325 $SIG{'HUP'} = 'IGNORE';
326 $SIG{'CHLD'} = \&reap;
328 # read in system messages
331 # read in command aliases
334 # initialise the Geomagnetic data engine
337 # initial the Spot stuff
340 # initialise the protocol engine
341 dbg('err', "reading in duplicate spot and WWV info ...");
345 # put in a DXCluster node for us here so we can add users and take them away
346 DXNode->new(0, $mycall, 0, 1, $DXProt::myprot_version);
348 # read in any existing message headers and clean out old crap
349 dbg('err', "reading existing message headers ...");
353 # read in any cron jobs
354 dbg('err', "reading cron jobs ...");
357 # read in database descriptors
358 dbg('err', "reading database descriptors ...");
361 # starting local stuff
362 dbg('err', "doing local initialisation ...");
366 dbg('local', "Local::init error $@") if $@;
368 # print various flags
369 #dbg('err', "seful info - \$^D: $^D \$^W: $^W \$^S: $^S \$^P: $^P");
371 # this, such as it is, is the main loop!
372 dbg('err', "orft we jolly well go ...");
374 #open(DB::OUT, "|tee /tmp/aa");
380 Msg->event_loop(1, 0.1);
382 process_inqueue(); # read in lines from the input queue and despatch them
385 # do timed stuff, ongoing processing happens one a second
386 if ($timenow != $systime) {
390 DXCron::process(); # do cron jobs
391 DXCommandmode::process(); # process ongoing command mode stuff
392 DXProt::process(); # process ongoing ak1a pcxx stuff
393 DXConnect::process();
397 Local::process(); # do any localised processing
399 dbg('local', "Local::process error $@") if $@;
402 last if --$decease <= 0;