make the PC16/17 antiloop protection for node and alias more clever.
[spider.git] / perl / DXProt.pm
index 60e0391f2e34e7e3bb73a061e40b7d0b274a9ea6..03253bf0b2a50827ad7ef88f9a19cc8cf8472119 100644 (file)
@@ -70,7 +70,7 @@ $baddxfn = "$main::data/baddx.pl";
  [ qw(c c n n) ],                              # pc25
  [ qw(f m d t m c c bc) ],             # pc26
  [ qw(d n n n n m c c bc) ],   # pc27
- [ qw(c c c c d t p m bp n p bp bc) ], # pc28
+ [ qw(c c m c d t p m bp n p bp bc) ], # pc28
  [ qw(c c n m) ],                              # pc29
  [ qw(c c n) ],                                        # pc30
  [ qw(c c n) ],                                        # pc31
@@ -178,15 +178,6 @@ sub init
        confess $@ if $@;
        $me->{sort} = 'S';    # S for spider
 
-       # now prime the spot and wwv  duplicates file with data
-#    my @today = Julian::unixtoj(time);
-#      for (Spot::readfile(@today), Spot::readfile(Julian::sub(@today, 1))) {
-#              Spot::dup(@{$_}[0..3]);
-#      }
-#      for (Geomag::readfile(time)) {
-#              Geomag::dup(@{$_}[1..5]);
-#      }
-
        # load the baddx file
        do "$baddxfn" if -e "$baddxfn";
        print "$@\n" if $@;
@@ -220,11 +211,18 @@ sub start
        $self->{consort} = $line;       # save the connection type
        $self->{here} = 1;
 
+       # get the output filters
+       $self->{spotsfilter} = Filter::read_in('spots', $call, 0) || Filter::read_in('spots', 'node_default', 0);
+       $self->{wwvfilter} = Filter::read_in('wwv', $call, 0) || Filter::read_in('wwv', 'node_default', 0);
+       $self->{wcyfilter} = Filter::read_in('wcy', $call, 0) || Filter::read_in('wcy', 'node_default', 0);
+       $self->{annfilter} = Filter::read_in('ann', $call, 0) || Filter::read_in('ann', 'node_default', 0) ;
+
+
        # get the INPUT filters (these only pertain to Clusters)
-       $self->{inspotfilter} = Filter::read_in('spots', $call, 1);
-       $self->{inwwvfilter} = Filter::read_in('wwv', $call, 1);
-       $self->{inwcyfilter} = Filter::read_in('wcy', $call, 1);
-       $self->{inannfilter} = Filter::read_in('ann', $call, 1);
+       $self->{inspotsfilter} = Filter::read_in('spots', $call, 1) || Filter::read_in('spots', 'node_default', 1);
+       $self->{inwwvfilter} = Filter::read_in('wwv', $call, 1) || Filter::read_in('wwv', 'node_default', 1);
+       $self->{inwcyfilter} = Filter::read_in('wcy', $call, 1) || Filter::read_in('wcy', 'node_default', 1);
+       $self->{inannfilter} = Filter::read_in('ann', $call, 1) || Filter::read_in('ann', 'node_default', 1);
        
        # set unbuffered and no echo
        $self->send_now('B',"0");
@@ -455,7 +453,21 @@ sub normal
                                
                                # global ann filtering on INPUT
                                if ($self->{inannfilter}) {
-                                       my ($filter, $hops) = Filter::it($self->{inannfilter}, @field[1..6], $self->{call} );
+                                       my ($ann_dxcc, $ann_itu, $ann_cq, $org_dxcc, $org_itu, $org_cq) = (0..0);
+                                       my @dxcc = Prefix::extract($field[1]);
+                                       if (@dxcc > 0) {
+                                               $ann_dxcc = $dxcc[1]->dxcc;
+                                               $ann_itu = $dxcc[1]->itu;
+                                               $ann_cq = $dxcc[1]->cq();                                               
+                                       }
+                                       @dxcc = Prefix::extract($field[5]);
+                                       if (@dxcc > 0) {
+                                               $org_dxcc = $dxcc[1]->dxcc;
+                                               $org_itu = $dxcc[1]->itu;
+                                               $org_cq = $dxcc[1]->cq();                                               
+                                       }
+                                       my ($filter, $hops) = $self->{inannfilter}->it(@field[1..6], $self->{call}, 
+                                                                                                       $ann_dxcc, $ann_itu, $ann_cq, $org_dxcc, $org_itu, $org_cq);
                                        unless ($filter) {
                                                dbg('chan', "Rejected by filter");
                                                return;
@@ -488,11 +500,26 @@ sub normal
                                # add it to the node table if it isn't present and it's
                                # connected locally
                                $node = DXNode->new($dxchan, $field[1], 0, 1, 5400);
-                               broadcast_ak1a(pc19($dxchan, $node), $dxchan, $self) unless $dxchan->{isolate};
+                               dbg('chan', "$field[1] no PC19 yet, autovivified as node");
+#                              broadcast_ak1a(pc19($dxchan, $node), $dxchan, $self) unless $dxchan->{isolate};
                                
                        }
-                       return unless $node; # ignore if havn't seen a PC19 for this one yet
-                       return unless $node->isa('DXNode');
+                       if ($field[1] eq $main::mycall || $field[2] eq $main::mycall) {
+                               dbg('chan', "LOOP: trying to alter config on this node from outside!");
+                               return;
+                       }
+                       if ($field[2] eq $main::myalias && DXChannel->get($field[1])) {
+                               dbg('chan', "LOOP: trying to connect sysop from outside!");
+                               return;
+                       }
+                       unless ($node) {
+                               dbg('chan', "Node $field[1] not in config");
+                               return;
+                       }
+                       unless ($node->isa('DXNode')) {
+                               dbg('chan', "$field[1] is not a node");
+                               return;
+                       }
                        if ($node->dxchan != $self) {
                                dbg('chan', "LOOP: $field[1] came in on wrong channel");
                                return;
@@ -505,10 +532,17 @@ sub normal
                                                
                        for ($i = 2; $i < $#field; $i++) {
                                my ($call, $confmode, $here) = $field[$i] =~ /^(\S+) (\S) (\d)/o;
-                               next if !$call || length $call < 3 || length $call > 8;
-                               next if !$confmode;
-                               $call = uc $call;
-                               next if DXCluster->get_exact($call); # we already have this (loop?)
+                               next unless $call && $confmode && defined $here && is_callsign($call);
+                               my $ref = DXCluster->get_exact($call); 
+                               if ($ref) {
+                                       if ($ref->isa('DXNode')) {
+                                               dbg('chan', "LOOP: $call is a node");
+                                               next;
+                                       }
+                                       my $rcall = $ref->call;
+                                       dbg('chan', "LOOP: already have $call on $rcall");
+                                       next;
+                               }
                                
                                $confmode = $confmode eq '*';
                                DXNodeuser->new($self, $node, $call, $confmode, $here);
@@ -535,11 +569,25 @@ sub normal
                                # add it to the node table if it isn't present and it's
                                # connected locally
                                $node = DXNode->new($dxchan, $field[2], 0, 1, 5400);
-                               broadcast_ak1a(pc19($dxchan, $node), $dxchan, $self) unless $dxchan->{isolate};
+                               dbg('chan', "$field[2] no PC19 yet, autovivified as node");
+#                              broadcast_ak1a(pc19($dxchan, $node), $dxchan, $self) unless $dxchan->{isolate};
+                       }
+                       if ($field[1] eq $main::mycall || $field[2] eq $main::mycall) {
+                               dbg('chan', "LOOP: trying to alter config on this node from outside!");
+                               return;
+                       }
+                       if ($field[1] eq $main::myalias && DXChannel->get($field[1])) {
+                               dbg('chan', "LOOP: trying to disconnect sysop from outside!");
+                               return;
+                       }
+                       unless ($node) {
+                               dbg('chan', "Node $field[2] not in config");
+                               return;
+                       }
+                       unless ($node->isa('DXNode')) {
+                               dbg('chan', "LOOP: $field[2] is not a node");
                                return;
                        }
-                       return unless $node;
-                       return unless $node->isa('DXNode');
                        if ($node->dxchan != $self) {
                                dbg('chan', "LOOP: $field[2] came in on wrong channel");
                                return;
@@ -549,7 +597,12 @@ sub normal
                                return;
                        }
                        my $ref = DXCluster->get_exact($field[1]);
-                       $ref->del() if $ref;
+                       if ($ref) {
+                               $ref->del;
+                       } else {
+                               dbg('chan', "$field[1] not known" );
+                               return;
+                       }
                        last SWITCH;
                }
                
@@ -576,6 +629,7 @@ sub normal
                                my $call = uc $field[$i+1];
                                my $confmode = $field[$i+2];
                                my $ver = $field[$i+3];
+                               next unless defined $here && defined $confmode && is_callsign($call);
 
                                $ver = 5400 if !$ver && $allowzero;
                                
@@ -640,6 +694,10 @@ sub normal
                        if ($call ne $main::mycall) { # don't allow malicious buggers to disconnect me!
                                my $node = DXCluster->get_exact($call);
                                if ($node) {
+                                       unless ($node->isa('DXNode')) {
+                                               dbg('chan', "$call is not a node");
+                                               return;
+                                       }
                                        if ($call eq $self->{call}) {
                                                dbg('chan', "LOOP: Trying to disconnect myself with PC21");
                                                return;
@@ -658,6 +716,9 @@ sub normal
                                        dbg('chan', "$call not in table, dropped");
                                        return;
                                }
+                       } else {
+                               dbg('chan', "I WILL NOT be disconnected!");
+                               return;
                        }
                        last SWITCH;
                }
@@ -824,7 +885,11 @@ sub normal
                }
                
                if ($pcno == 39) {              # incoming disconnect
-                       $self->disconnect(1);
+                       if ($field[1] eq $self->{call}) {
+                               $self->disconnect(1);
+                       } else {
+                               dbg('chan', "LOOP: came in on wrong channel");
+                       }
                        return;
                }
                
@@ -1126,8 +1191,8 @@ sub send_dx_spot
                my $routeit;
                my ($filter, $hops);
 
-               if ($dxchan->{spotfilter}) {
-                   ($filter, $hops) = Filter::it($dxchan->{spotfilter}, @_, $self->{call} );
+               if ($dxchan->{spotsfilter}) {
+                   ($filter, $hops) = $dxchan->{spotsfilter}->it(@_, $self->{call} );
                        next unless $filter;
                }
                
@@ -1172,7 +1237,7 @@ sub send_wwv_spot
                my ($filter, $hops);
 
                if ($dxchan->{wwvfilter}) {
-                        ($filter, $hops) = Filter::it($dxchan->{wwvfilter}, @_, $self->{call} );
+                        ($filter, $hops) = $dxchan->{wwvfilter}->it(@_, $self->{call} );
                         next unless $filter;
                }
                if ($dxchan->is_node) {
@@ -1216,10 +1281,10 @@ sub send_wcy_spot
                my ($filter, $hops);
 
                if ($dxchan->{wcyfilter}) {
-                        ($filter, $hops) = Filter::it($dxchan->{wcyfilter}, @_, $self->{call} );
+                        ($filter, $hops) = $dxchan->{wcyfilter}->it(@_, $self->{call} );
                         next unless $filter;
                }
-               if ($dxchan->is_clx || $dxchan->is_spider) {
+               if ($dxchan->is_clx || $dxchan->is_spider || $dxchan->is_dxnet) {
                        next if $dxchan == $self;
                        if ($hops) {
                                $routeit = $line;
@@ -1278,7 +1343,20 @@ sub send_announce
                my ($filter, $hops);
 
                if ($dxchan->{annfilter}) {
-                       ($filter, $hops) = Filter::it($dxchan->{annfilter}, @_, $self->{call} );
+                       my ($ann_dxcc, $ann_itu, $ann_cq, $org_dxcc, $org_itu, $org_cq) = (0..0);
+                       my @dxcc = Prefix::extract($_[0]);
+                       if (@dxcc > 0) {
+                               $ann_dxcc = $dxcc[1]->dxcc;
+                               $ann_itu = $dxcc[1]->itu;
+                               $ann_cq = $dxcc[1]->cq;                                         
+                       }
+                       @dxcc = Prefix::extract($_[4]);
+                       if (@dxcc > 0) {
+                               $org_dxcc = $dxcc[1]->dxcc;
+                               $org_itu = $dxcc[1]->itu;
+                               $org_cq = $dxcc[1]->cq;                                         
+                       }
+                       ($filter, $hops) = $dxchan->{annfilter}->it(@_, $self->{call}, $ann_dxcc, $ann_itu, $ann_cq, $org_dxcc, $org_itu, $org_cq);
                        next unless $filter;
                } 
                if ($dxchan->is_node && $_[1] ne $main::mycall) {  # i.e not specifically routed to me
@@ -1362,19 +1440,22 @@ sub send_local_config
 sub route
 {
        my ($self, $call, $line) = @_;
-       my $cl = DXCluster->get_exact($call);
-       if ($cl) {       # don't route it back down itself
-               if (ref $self && $call eq $self->{call}) {
-                       dbg('chan', "Trying to route back to source, dropped");
-                       return;
-               }
-               my $hops;
-               my $dxchan = $cl->{dxchan};
-               if ($dxchan) {
-                       my $routeit = adjust_hops($dxchan, $line);   # adjust its hop count by node name
-                       if ($routeit) {
-                               $dxchan->send($routeit) if $dxchan;
-                       }
+
+       if (ref $self && $call eq $self->{call}) {
+               dbg('chan', "Trying to route back to source, dropped");
+               return;
+       }
+
+       # always send it down the local interface if available
+       my $dxchan = DXChannel->get($call);
+       unless ($dxchan) {
+               my $cl = DXCluster->get_exact($call);
+               $dxchan = $cl->dxchan if $cl;
+       }
+       if ($dxchan) {
+               my $routeit = adjust_hops($dxchan, $line);   # adjust its hop count by node name
+               if ($routeit) {
+                       $dxchan->send($routeit);
                }
        }
 }
@@ -1445,7 +1526,7 @@ sub broadcast_list
                
                if ($sort eq 'dx') {
                    next unless $dxchan->{dx};
-                       ($filter) = Filter::it($dxchan->{spotfilter}, @{$fref}) if ref $fref;
+                       ($filter) = $dxchan->{spotsfilter}->it(@{$fref}) if ref $fref;
                        next unless $filter;
                }
                next if $sort eq 'ann' && !$dxchan->{ann};