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
13 # make sure that modules are searched in the order local then perl
15 # root of directory tree for this system
17 $root = $ENV{'DXSPIDER_ROOT'} if $ENV{'DXSPIDER_ROOT'};
19 unshift @INC, "$root/perl"; # this IS the right way round!
20 unshift @INC, "$root/local";
43 @inqueue = (); # the main input queue, an array of hashes
44 $systime = 0; # the time now (in seconds)
45 $version = 1.2; # the version no of the software
47 # handle disconnections
51 return if !defined $dxchan;
52 $dxchan->disconnect();
55 # handle incoming messages
58 my ($conn, $msg, $err) = @_;
59 my $dxchan = DXChannel->get_by_cnum($conn); # get the dxconnnect object for this message
61 if (defined $err && $err) {
62 disconnect($dxchan) if defined $dxchan;
66 # set up the basic channel info - this needs a bit more thought - there is duplication here
67 if (!defined $dxchan) {
68 my ($sort, $call, $line) = $msg =~ /^(\w)(\S+)\|(.*)$/;
70 # is there one already connected?
71 if (DXChannel->get($call)) {
72 my $mess = DXM::msg('conother', $call);
73 dbg('chan', "-> D $call $mess\n");
74 $conn->send_now("D$call|$mess");
76 dbg('chan', "-> Z $call bye\n");
77 $conn->send_now("Z$call|bye"); # this will cause 'client' to disconnect
81 # is there one already connected elsewhere in the cluster?
82 if (DXCluster->get($call)) {
83 my $mess = DXM::msg('concluster', $call);
84 dbg('chan', "-> D $call $mess\n");
85 $conn->send_now("D$call|$mess");
87 dbg('chan', "-> Z $call bye\n");
88 $conn->send_now("Z$call|bye"); # this will cause 'client' to disconnect
92 my $user = DXUser->get($call);
94 $user = DXUser->new($call);
98 $dxchan = DXCommandmode->new($call, $conn, $user) if ($user->sort eq 'U');
99 $dxchan = DXProt->new($call, $conn, $user) if ($user->sort eq 'A');
100 die "Invalid sort of user on $call = $sort" if !$dxchan;
103 # queue the message and the channel object for later processing
105 my $self = bless {}, "inqueue";
106 $self->{dxchan} = $dxchan;
107 $self->{data} = $msg;
108 push @inqueue, $self;
117 # cease running this program, close down all the connections nicely
121 foreach $dxchan (DXChannel->get_all()) {
127 # this is where the input queue is dealt with and things are dispatched off to other parts of
131 my $self = shift @inqueue;
134 my $data = $self->{data};
135 my $dxchan = $self->{dxchan};
136 my ($sort, $call, $line) = $data =~ /^(\w)(\S+)\|(.*)$/;
138 # do the really sexy console interface bit! (Who is going to do the TK interface then?)
139 dbg('chan', "<- $sort $call $line\n");
142 my $user = $dxchan->user;
144 $dxchan->start($line);
145 } elsif ($sort eq 'D') {
146 die "\$user not defined for $call" if !defined $user;
149 $dxchan->normal($line);
151 disconnect($dxchan) if ($dxchan->{state} eq 'bye');
152 } elsif ($sort eq 'Z') {
155 print STDERR atime, " Unknown command letter ($sort) received from $call\n";
159 #############################################################
161 # The start of the main line of code
163 #############################################################
165 # open the debug file, set various FHs to be unbuffered
170 STDOUT->autoflush(1);
173 print "DXSpider DX Cluster Version $version\nCopyright (c) 1998 Dirk Koopman G1TLH\n";
176 print "loading prefixes ...\n";
180 print "loading band data ...\n";
183 # initialise User file system
184 print "loading user file system ...\n";
185 DXUser->init($userfn);
187 # start listening for incoming messages/connects
188 print "starting listener ...\n";
189 Msg->new_server("$clusteraddr", $clusterport, \&login);
192 $SIG{'INT'} = \&cease;
193 $SIG{'TERM'} = \&cease;
194 $SIG{'HUP'} = 'IGNORE';
196 # initialise the protocol engine
199 # initialise the Geomagnetic data engine
202 # initial the Spot stuff
205 # put in a DXCluster node for us here so we can add users and take them away
206 DXNode->new(0, $mycall, 0, 1, $DXProt::myprot_version);
208 # read in any existing message headers
209 print "reading existing message headers\n";
212 # read in any cron jobs
213 print "reading cron jobs\n";
216 # this, such as it is, is the main loop!
217 print "orft we jolly well go ...\n";
220 Msg->event_loop(1, 0.001);
222 process_inqueue(); # read in lines from the input queue and despatch them
224 # do timed stuff, ongoing processing happens one a second
225 if ($timenow != $systime) {
229 DXCommandmode::process(); # process ongoing command mode stuff
230 DXProt::process(); # process ongoing ak1a pcxx stuff
232 DXConnect::process();