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 = "1.26"; # 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 elsewhere in the cluster (and not a cluster)
110 my $user = DXUser->get($call);
112 if (($user->sort eq 'A' || $call eq $myalias) && !DXCluster->get_exact($call)) {
115 if (DXCluster->get($call) || DXChannel->get($call)) {
116 my $mess = DXM::msg($lang, $user->sort eq 'A' ? 'concluster' : 'conother', $call);
117 already_conn($conn, $call, $mess);
121 $user->{lang} = $main::lang if !$user->{lang}; # to autoupdate old systems
123 if (DXCluster->get($call)) {
124 my $mess = DXM::msg($lang, 'conother', $call);
125 already_conn($conn, $call, $mess);
128 $user = DXUser->new($call);
132 if ($user->lockout) {
133 Log('DXCommand', "$call is locked out, disconnected");
134 $conn->send_now("Z$call|bye"); # this will cause 'client' to disconnect
139 $dxchan = DXCommandmode->new($call, $conn, $user) if ($user->sort eq 'U');
140 $dxchan = DXProt->new($call, $conn, $user) if ($user->sort eq 'A');
141 die "Invalid sort of user on $call = $sort" if !$dxchan;
144 # queue the message and the channel object for later processing
146 my $self = bless {}, "inqueue";
147 $self->{dxchan} = $dxchan;
148 $self->{data} = $msg;
149 push @inqueue, $self;
158 # cease running this program, close down all the connections nicely
163 $SIG{'TERM'} = 'IGNORE';
164 $SIG{'INT'} = 'IGNORE';
167 Local::finish(); # end local processing
169 dbg('local', "Local::finish error $@") if $@;
171 foreach $dxchan (DXChannel->get_all()) {
172 disconnect($dxchan) unless $dxchan == $DXProt::me;
174 Msg->event_loop(1, 0.05);
175 Msg->event_loop(1, 0.05);
176 Msg->event_loop(1, 0.05);
177 Msg->event_loop(1, 0.05);
179 Log('cluster', "DXSpider V$version stopped");
184 # the reaper of children
187 $SIG{'CHLD'} = \&reap;
191 # this is where the input queue is dealt with and things are dispatched off to other parts of
195 my $self = shift @inqueue;
198 my $data = $self->{data};
199 my $dxchan = $self->{dxchan};
200 my ($sort, $call, $line) = $data =~ /^(\w)(\S+)\|(.*)$/;
202 # do the really sexy console interface bit! (Who is going to do the TK interface then?)
203 dbg('chan', "<- $sort $call $line\n") unless $sort eq 'D';
206 my $user = $dxchan->user;
207 if ($sort eq 'A' || $sort eq 'O') {
208 $dxchan->start($line, $sort);
209 } elsif ($sort eq 'I') {
210 die "\$user not defined for $call" if !defined $user;
213 $dxchan->normal($line);
215 disconnect($dxchan) if ($dxchan->{state} eq 'bye');
216 } elsif ($sort eq 'Z') {
218 } elsif ($sort eq 'D') {
219 ; # ignored (an echo)
221 print STDERR atime, " Unknown command letter ($sort) received from $call\n";
227 my $t = $systime - $starttime;
228 my $days = int $t / 86400;
230 my $hours = int $t / 3600;
232 my $mins = int $t / 60;
233 return sprintf "%d %02d:%02d", $days, $hours, $mins;
235 #############################################################
237 # The start of the main line of code
239 #############################################################
241 $starttime = $systime = time;
243 # open the debug file, set various FHs to be unbuffered
247 STDOUT->autoflush(1);
249 Log('cluster', "DXSpider V$version started");
252 print "DXSpider DX Cluster Version $version\nCopyright (c) 1998 Dirk Koopman G1TLH\n";
255 print "loading prefixes ...\n";
259 print "loading band data ...\n";
262 # initialise User file system
263 print "loading user file system ...\n";
264 DXUser->init($userfn, 1);
266 # start listening for incoming messages/connects
267 print "starting listener ...\n";
268 Msg->new_server("$clusteraddr", $clusterport, \&login);
271 $SIG{'INT'} = \&cease;
272 $SIG{'TERM'} = \&cease;
273 $SIG{'HUP'} = 'IGNORE';
274 $SIG{'CHLD'} = \&reap;
276 # read in system messages
279 # read in command aliases
282 # initialise the Geomagnetic data engine
285 # initial the Spot stuff
288 # initialise the protocol engine
289 print "reading in duplicate spot and WWV info ...\n";
293 # put in a DXCluster node for us here so we can add users and take them away
294 DXNode->new(0, $mycall, 0, 1, $DXProt::myprot_version);
296 # read in any existing message headers and clean out old crap
297 print "reading existing message headers ...\n";
301 # read in any cron jobs
302 print "reading cron jobs ...\n";
305 # starting local stuff
306 print "doing local initialisation ...\n";
310 dbg('local', "Local::init error $@") if $@;
312 # print various flags
313 #print "useful info - \$^D: $^D \$^W: $^W \$^S: $^S \$^P: $^P\n";
315 # this, such as it is, is the main loop!
316 print "orft we jolly well go ...\n";
319 Msg->event_loop(1, 0.001);
321 process_inqueue(); # read in lines from the input queue and despatch them
323 # do timed stuff, ongoing processing happens one a second
324 if ($timenow != $systime) {
328 DXCron::process(); # do cron jobs
329 DXCommandmode::process(); # process ongoing command mode stuff
330 DXProt::process(); # process ongoing ak1a pcxx stuff
331 DXConnect::process();
333 Local::process(); # do any localised processing
335 dbg('local', "Local::process error $@") if $@;
338 last if --$decease <= 0;