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 = "1.35"; # 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) = $msg =~ /^(\w)(\S+)\|(.*)$/;
117 # is there one already connected to me ?
118 my $user = DXUser->get($call);
119 if (DXChannel->get($call)) {
120 my $mess = DXM::msg($lang, $user->sort eq 'A' ? 'concluster' : 'conother', $call);
121 already_conn($conn, $call, $mess);
125 # is there one already connected elsewhere in the cluster (and not a cluster)
127 if (($user->sort eq 'A' || $call eq $myalias) && !DXCluster->get_exact($call)) {
130 if (DXCluster->get($call) || DXChannel->get($call)) {
131 my $mess = DXM::msg($lang, $user->sort eq 'A' ? 'concluster' : 'conother', $call);
132 already_conn($conn, $call, $mess);
136 $user->{lang} = $main::lang if !$user->{lang}; # to autoupdate old systems
138 if (DXCluster->get($call)) {
139 my $mess = DXM::msg($lang, 'conother', $call);
140 already_conn($conn, $call, $mess);
143 $user = DXUser->new($call);
147 if ($user->lockout) {
148 Log('DXCommand', "$call is locked out, disconnected");
149 $conn->send_now("Z$call|bye"); # this will cause 'client' to disconnect
154 $dxchan = DXCommandmode->new($call, $conn, $user) if ($user->sort eq 'U');
155 $dxchan = DXProt->new($call, $conn, $user) if ($user->sort eq 'A');
156 $dxchan = BBS->new($call, $conn, $user) if ($user->sort eq 'B');
157 die "Invalid sort of user on $call = $sort" if !$dxchan;
160 # queue the message and the channel object for later processing
162 my $self = bless {}, "inqueue";
163 $self->{dxchan} = $dxchan;
164 $self->{data} = $msg;
165 push @inqueue, $self;
174 # cease running this program, close down all the connections nicely
179 $SIG{'TERM'} = 'IGNORE';
180 $SIG{'INT'} = 'IGNORE';
183 Local::finish(); # end local processing
185 dbg('local', "Local::finish error $@") if $@;
188 foreach $dxchan (DXChannel->get_all()) {
189 next if $dxchan->is_ak1a;
190 disconnect($dxchan) unless $dxchan == $DXProt::me;
192 Msg->event_loop(1, 0.05);
193 Msg->event_loop(1, 0.05);
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);
200 foreach $dxchan (DXChannel->get_all()) {
201 next unless $dxchan->is_ak1a;
202 disconnect($dxchan) unless $dxchan == $DXProt::me;
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);
211 Msg->event_loop(1, 0.05);
212 Msg->event_loop(1, 0.05);
213 Msg->event_loop(1, 0.05);
214 Msg->event_loop(1, 0.05);
215 Msg->event_loop(1, 0.05);
218 # close all databases
221 dbg('chan', "DXSpider version $version ended");
222 Log('cluster', "DXSpider V$version stopped");
226 # $SIG{__WARN__} = $SIG{__DIE__} = sub {my $a = shift; cluck($a); };
230 # the reaper of children
233 $SIG{'CHLD'} = \&reap;
235 @outstanding_connects = grep {$_->{pid} != $cpid} @outstanding_connects;
238 # this is where the input queue is dealt with and things are dispatched off to other parts of
242 my $self = shift @inqueue;
245 my $data = $self->{data};
246 my $dxchan = $self->{dxchan};
247 my ($sort, $call, $line) = $data =~ /^(\w)([A-Z0-9\-]+)\|(.*)$/;
250 # the above regexp must work
251 return unless ($sort && $call && $line);
253 # translate any crappy characters into hex characters
254 if ($line =~ /[\x00-\x06\x08\x0a-\x1f\x7f-\xff]/o) {
255 $line =~ s/([\x00-\x1f\x7f-\xff])/uc sprintf("%%%02x",ord($1))/eg;
258 # do the really sexy console interface bit! (Who is going to do the TK interface then?)
259 dbg('chan', "<- $sort $call $line\n") unless $sort eq 'D';
262 my $user = $dxchan->user;
263 if ($sort eq 'A' || $sort eq 'O') {
264 $dxchan->start($line, $sort);
265 } elsif ($sort eq 'I') {
266 die "\$user not defined for $call" if !defined $user;
268 $dxchan->normal($line);
269 disconnect($dxchan) if ($dxchan->{state} eq 'bye');
270 } elsif ($sort eq 'Z') {
271 $dxchan->conn(undef);
273 } elsif ($sort eq 'D') {
274 ; # ignored (an echo)
276 print STDERR atime, " Unknown command letter ($sort) received from $call\n";
282 my $t = $systime - $starttime;
283 my $days = int $t / 86400;
285 my $hours = int $t / 3600;
287 my $mins = int $t / 60;
288 return sprintf "%d %02d:%02d", $days, $hours, $mins;
290 #############################################################
292 # The start of the main line of code
294 #############################################################
296 $starttime = $systime = time;
298 # open the debug file, set various FHs to be unbuffered
303 STDOUT->autoflush(1);
305 Log('cluster', "DXSpider V$version started");
308 print "DXSpider DX Cluster Version $version\nCopyright (c) 1998-1999 Dirk Koopman G1TLH\n";
311 print "loading prefixes ...\n";
315 print "loading band data ...\n";
318 # initialise User file system
319 print "loading user file system ...\n";
320 DXUser->init($userfn, 1);
322 # start listening for incoming messages/connects
323 print "starting listener ...\n";
324 Msg->new_server("$clusteraddr", $clusterport, \&login);
327 $SIG{'INT'} = \&cease;
328 $SIG{'TERM'} = \&cease;
329 $SIG{'HUP'} = 'IGNORE';
330 $SIG{'CHLD'} = \&reap;
332 # read in system messages
335 # read in command aliases
338 # initialise the Geomagnetic data engine
341 # initial the Spot stuff
344 # initialise the protocol engine
345 print "reading in duplicate spot and WWV info ...\n";
349 # put in a DXCluster node for us here so we can add users and take them away
350 DXNode->new(0, $mycall, 0, 1, $DXProt::myprot_version);
352 # read in any existing message headers and clean out old crap
353 print "reading existing message headers ...\n";
357 # read in any cron jobs
358 print "reading cron jobs ...\n";
361 # read in database descriptors
362 print "reading database descriptors ...\n";
365 # starting local stuff
366 print "doing local initialisation ...\n";
370 dbg('local', "Local::init error $@") if $@;
372 # print various flags
373 #print "useful info - \$^D: $^D \$^W: $^W \$^S: $^S \$^P: $^P\n";
375 # this, such as it is, is the main loop!
376 print "orft we jolly well go ...\n";
377 dbg('chan', "DXSpider version $version started...");
380 Msg->event_loop(1, 0.1);
382 process_inqueue(); # read in lines from the input queue and despatch them
384 # do timed stuff, ongoing processing happens one a second
385 if ($timenow != $systime) {
389 DXCron::process(); # do cron jobs
390 DXCommandmode::process(); # process ongoing command mode stuff
391 DXProt::process(); # process ongoing ak1a pcxx stuff
392 DXConnect::process();
396 Local::process(); # do any localised processing
398 dbg('local', "Local::process error $@") if $@;
401 last if --$decease <= 0;