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) $!";
68 @inqueue = (); # the main input queue, an array of hashes
69 $systime = 0; # the time now (in seconds)
70 $version = "1.28"; # the version no of the software
71 $starttime = 0; # the starting time of the cluster
72 $lockfn = "cluster.lock"; # lock file name
74 # handle disconnections
78 return if !defined $dxchan;
79 $dxchan->disconnect();
82 # send a message to call on conn and disconnect
85 my ($conn, $call, $mess) = @_;
87 dbg('chan', "-> D $call $mess\n");
88 $conn->send_now("D$call|$mess");
90 dbg('chan', "-> Z $call bye\n");
91 $conn->send_now("Z$call|bye"); # this will cause 'client' to disconnect
94 # handle incoming messages
97 my ($conn, $msg, $err) = @_;
98 my $dxchan = DXChannel->get_by_cnum($conn); # get the dxconnnect object for this message
100 if (defined $err && $err) {
101 disconnect($dxchan) if defined $dxchan;
105 # set up the basic channel info - this needs a bit more thought - there is duplication here
106 if (!defined $dxchan) {
107 my ($sort, $call, $line) = $msg =~ /^(\w)(\S+)\|(.*)$/;
109 # is there one already connected to me ?
110 if ($dxchan = DXChannel->get($call)) {
115 # is there one already connected elsewhere in the cluster (and not a cluster)
116 my $user = DXUser->get($call);
118 if (($user->sort eq 'A' || $call eq $myalias) && !DXCluster->get_exact($call)) {
121 if (DXCluster->get($call) || DXChannel->get($call)) {
122 my $mess = DXM::msg($lang, $user->sort eq 'A' ? 'concluster' : 'conother', $call);
123 already_conn($conn, $call, $mess);
127 $user->{lang} = $main::lang if !$user->{lang}; # to autoupdate old systems
129 if (DXCluster->get($call)) {
130 my $mess = DXM::msg($lang, 'conother', $call);
131 already_conn($conn, $call, $mess);
134 $user = DXUser->new($call);
138 if ($user->lockout) {
139 Log('DXCommand', "$call is locked out, disconnected");
140 $conn->send_now("Z$call|bye"); # this will cause 'client' to disconnect
145 $dxchan = DXCommandmode->new($call, $conn, $user) if ($user->sort eq 'U');
146 $dxchan = DXProt->new($call, $conn, $user) if ($user->sort eq 'A');
147 die "Invalid sort of user on $call = $sort" if !$dxchan;
150 # queue the message and the channel object for later processing
152 my $self = bless {}, "inqueue";
153 $self->{dxchan} = $dxchan;
154 $self->{data} = $msg;
155 push @inqueue, $self;
164 # cease running this program, close down all the connections nicely
169 $SIG{'TERM'} = 'IGNORE';
170 $SIG{'INT'} = 'IGNORE';
173 Local::finish(); # end local processing
175 dbg('local', "Local::finish error $@") if $@;
177 foreach $dxchan (DXChannel->get_all()) {
178 disconnect($dxchan) unless $dxchan == $DXProt::me;
180 Msg->event_loop(1, 0.05);
181 Msg->event_loop(1, 0.05);
182 Msg->event_loop(1, 0.05);
183 Msg->event_loop(1, 0.05);
184 Msg->event_loop(1, 0.05);
185 Msg->event_loop(1, 0.05);
186 Msg->event_loop(1, 0.05);
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);
193 dbg('chan', "DXSpider version $version ended");
194 Log('cluster', "DXSpider V$version stopped");
199 # the reaper of children
202 $SIG{'CHLD'} = \&reap;
206 # this is where the input queue is dealt with and things are dispatched off to other parts of
210 my $self = shift @inqueue;
213 my $data = $self->{data};
214 my $dxchan = $self->{dxchan};
215 my ($sort, $call, $line) = $data =~ /^(\w)(\S+)\|(.*)$/;
217 # do the really sexy console interface bit! (Who is going to do the TK interface then?)
218 dbg('chan', "<- $sort $call $line\n") unless $sort eq 'D';
221 my $user = $dxchan->user;
222 if ($sort eq 'A' || $sort eq 'O') {
223 $dxchan->start($line, $sort);
224 } elsif ($sort eq 'I') {
225 die "\$user not defined for $call" if !defined $user;
228 $dxchan->normal($line);
230 disconnect($dxchan) if ($dxchan->{state} eq 'bye');
231 } elsif ($sort eq 'Z') {
233 } elsif ($sort eq 'D') {
234 ; # ignored (an echo)
236 print STDERR atime, " Unknown command letter ($sort) received from $call\n";
242 my $t = $systime - $starttime;
243 my $days = int $t / 86400;
245 my $hours = int $t / 3600;
247 my $mins = int $t / 60;
248 return sprintf "%d %02d:%02d", $days, $hours, $mins;
250 #############################################################
252 # The start of the main line of code
254 #############################################################
256 $starttime = $systime = time;
258 # open the debug file, set various FHs to be unbuffered
262 STDOUT->autoflush(1);
264 Log('cluster', "DXSpider V$version started");
267 print "DXSpider DX Cluster Version $version\nCopyright (c) 1998 Dirk Koopman G1TLH\n";
270 print "loading prefixes ...\n";
274 print "loading band data ...\n";
277 # initialise User file system
278 print "loading user file system ...\n";
279 DXUser->init($userfn, 1);
281 # start listening for incoming messages/connects
282 print "starting listener ...\n";
283 Msg->new_server("$clusteraddr", $clusterport, \&login);
286 $SIG{'INT'} = \&cease;
287 $SIG{'TERM'} = \&cease;
288 $SIG{'HUP'} = 'IGNORE';
289 $SIG{'CHLD'} = \&reap;
291 # read in system messages
294 # read in command aliases
297 # initialise the Geomagnetic data engine
300 # initial the Spot stuff
303 # initialise the protocol engine
304 print "reading in duplicate spot and WWV info ...\n";
308 # put in a DXCluster node for us here so we can add users and take them away
309 DXNode->new(0, $mycall, 0, 1, $DXProt::myprot_version);
311 # read in any existing message headers and clean out old crap
312 print "reading existing message headers ...\n";
316 # read in any cron jobs
317 print "reading cron jobs ...\n";
320 # starting local stuff
321 print "doing local initialisation ...\n";
325 dbg('local', "Local::init error $@") if $@;
327 # print various flags
328 #print "useful info - \$^D: $^D \$^W: $^W \$^S: $^S \$^P: $^P\n";
330 # this, such as it is, is the main loop!
331 print "orft we jolly well go ...\n";
332 dbg('chan', "DXSpider version $version started...");
335 Msg->event_loop(1, 0.001);
337 process_inqueue(); # read in lines from the input queue and despatch them
339 # do timed stuff, ongoing processing happens one a second
340 if ($timenow != $systime) {
344 DXCron::process(); # do cron jobs
345 DXCommandmode::process(); # process ongoing command mode stuff
346 DXProt::process(); # process ongoing ak1a pcxx stuff
347 DXConnect::process();
349 Local::process(); # do any localised processing
351 dbg('local', "Local::process error $@") if $@;
354 last if --$decease <= 0;