3 # This module impliments the handlers for the protocal mode for a dx cluster
5 # Copyright (c) 1998-2007 Dirk Koopman G1TLH
38 use vars qw($pc11_max_age $pc23_max_age $last_pc50 $eph_restime $eph_info_restime $eph_pc34_restime
39 $last_hour $last10 %eph %pings %rcmds $ann_to_talk
40 $pingint $obscount %pc19list $chatdupeage $chatimportfn
41 $investigation_int $pc19_version $myprot_version
42 %nodehops $baddx $badspotter $badnode $censorpc
43 $allowzero $decode_dk0wcy $send_opernam @checklist
44 $eph_pc15_restime $pc9x_past_age $pc9x_dupe_age
45 $pc10_dupe_age $pc92_slug_changes $last_pc92_slug
46 $pc92Ain $pc92Cin $pc92Din $pc92Kin $pc9x_time_tolerance
50 $pc9x_dupe_age = 60; # catch loops of circular (usually) D records
51 $pc10_dupe_age = 45; # just something to catch duplicate PC10->PC93 conversions
52 $pc92_slug_changes = 60*5; # slug any changes going outward for this long
53 $last_pc92_slug = 0; # the last time we sent out any delayed add or del PC92s
54 $pc9x_time_tolerance = 15*60; # the time on a pc9x is allowed to be out by this amount
55 $pc9x_past_age = (122*60)+ # maximum age in the past of a px9x (a config record might be the only
56 $pc9x_time_tolerance; # thing a node might send - once an hour and we allow an extra hour for luck)
57 # this is actually the partition between "yesterday" and "today" but old.
59 $pc92filterdef = bless ([
60 # tag, sort, field, priv, special parser
69 # incoming talk commands
78 # this is to catch loops caused by bad software ...
79 if (eph_dup($line, $pc10_dupe_age)) {
83 # will we allow it at all?
86 if (@bad = BadWords::check($pc->[3])) {
87 dbg("PCPROT: Bad words: @bad, dropped") if isdbg('chanerr');
92 # is it for me or one of mine?
93 my ($from, $to, $via, $call, $dxchan);
95 if ($pc->[5] gt ' ') {
102 # if this is a 'nodx' node then ignore it
103 if ($badnode->in($pc->[6]) || ($via && $badnode->in($via))) {
104 dbg("PCPROT: Bad Node, dropped") if isdbg('chanerr');
108 # if this is a 'bad spotter' user then ignore it
110 $nossid =~ s/-\d+$//;
111 if ($badspotter->in($nossid)) {
112 dbg("PCPROT: Bad Spotter, dropped") if isdbg('chanerr');
116 # if we are converting announces to talk is it a dup?
118 if (AnnTalk::is_talk_candidate($from, $pc->[3]) && AnnTalk::dup($from, $to, $pc->[3])) {
119 dbg("PCPROT: Dupe talk from announce, dropped") if isdbg('chanerr');
124 # convert this to a PC93, coming from mycall with origin set and process it as such
125 $main::me->normal(pc93($to, $from, $via, $pc->[3], $pc->[6]));
137 # route 'foreign' pc26s
139 if ($pc->[7] ne $main::mycall) {
140 $self->route($pc->[7], $line);
145 # my ($hops) = $pc->[8] =~ /^H(\d+)/;
147 # is the spotted callsign blank? This should really be trapped earlier but it
148 # could break other protocol sentences. Also check for lower case characters.
149 if ($pc->[2] =~ /^\s*$/) {
150 dbg("PCPROT: blank callsign, dropped") if isdbg('chanerr');
153 if ($pc->[2] =~ /[a-z]/) {
154 dbg("PCPROT: lowercase characters, dropped") if isdbg('chanerr');
159 # if this is a 'nodx' node then ignore it
160 if ($badnode->in($pc->[7])) {
161 dbg("PCPROT: Bad Node, dropped") if isdbg('chanerr');
165 # if this is a 'bad spotter' user then ignore it
166 my $nossid = $pc->[6];
167 $nossid =~ s/-\d+$//;
168 if ($badspotter->in($nossid)) {
169 dbg("PCPROT: Bad Spotter, dropped") if isdbg('chanerr');
173 # convert the date to a unix date
174 my $d = cltounix($pc->[3], $pc->[4]);
175 # bang out (and don't pass on) if date is invalid or the spot is too old (or too young)
176 if (!$d || (($pcno == 11 || $pcno == 61) && ($d < $main::systime - $pc11_max_age || $d > $main::systime + 900))) {
177 dbg("PCPROT: Spot ignored, invalid date or out of range ($pc->[3] $pc->[4])\n") if isdbg('chanerr');
182 if ($baddx->in($pc->[2]) || BadWords::check($pc->[2])) {
183 dbg("PCPROT: Bad DX spot, ignored") if isdbg('chanerr');
188 $pc->[5] =~ s/^\s+//; # take any leading blanks off
189 $pc->[2] = unpad($pc->[2]); # take off leading and trailing blanks from spotted callsign
190 if ($pc->[2] =~ /BUST\w*$/) {
191 dbg("PCPROT: useless 'BUSTED' spot") if isdbg('chanerr');
196 if (@bad = BadWords::check($pc->[5])) {
197 dbg("PCPROT: Bad words: @bad, dropped") if isdbg('chanerr');
202 my @spot = Spot::prepare($pc->[1], $pc->[2], $d, $pc->[5], $nossid, $pc->[7], $pc->[8]);
203 # global spot filtering on INPUT
204 if ($self->{inspotsfilter}) {
205 my ($filter, $hops) = $self->{inspotsfilter}->it(@spot);
207 dbg("PCPROT: Rejected by input spot filter") if isdbg('chanerr');
212 # this goes after the input filtering, but before the add
213 # so that if it is input filtered, it isn't added to the dup
214 # list. This allows it to come in from a "legitimate" source
215 if (Spot::dup(@spot[0..4,5])) {
216 dbg("PCPROT: Duplicate Spot ignored\n") if isdbg('chanerr');
224 # @spot at this point contains:-
225 # freq, spotted call, time, text, spotter, spotted cc, spotters cc, orig node
226 # then spotted itu, spotted cq, spotters itu, spotters cq
227 # you should be able to route on any of these
230 # fix up qra locators of known users
231 my $user = DXUser::get_current($spot[4]);
233 my $qra = $user->qra;
234 unless ($qra && is_qra($qra)) {
235 my $lat = $user->lat;
236 my $long = $user->long;
237 if (defined $lat && defined $long) {
238 $user->qra(DXBearing::lltoqra($lat, $long));
243 # send a remote command to a distant cluster if it is visible and there is no
244 # qra locator and we havn't done it for a month.
246 unless ($user->qra) {
248 my $to = $user->homenode;
249 my $last = $user->lastoper || 0;
250 if ($send_opernam && $to && $to ne $main::mycall && $main::systime > $last + $DXUser::lastoperinterval && ($node = Route::Node::get($to)) ) {
251 my $cmd = "forward/opernam $spot[4]";
252 # send the rcmd but we aren't interested in the replies...
253 my $dxchan = $node->dxchan;
254 if ($dxchan && $dxchan->is_clx) {
255 route(undef, $to, pc84($main::mycall, $to, $main::mycall, $cmd));
257 route(undef, $to, pc34($main::mycall, $to, $cmd));
259 if ($to ne $pc->[7]) {
261 $node = Route::Node::get($to);
263 $dxchan = $node->dxchan;
264 if ($dxchan && $dxchan->is_clx) {
265 route(undef, $to, pc84($main::mycall, $to, $main::mycall, $cmd));
267 route(undef, $to, pc34($main::mycall, $to, $cmd));
271 $user->lastoper($main::systime);
278 if (defined &Local::spot) {
281 $r = Local::spot($self, @spot);
286 # DON'T be silly and send on PC26s!
287 return if $pcno == 26;
289 # send out the filtered spots
290 send_dx_spot($self, $line, @spot) if @spot;
302 # announce duplicate checking
303 $pc->[3] =~ s/^\s+//; # remove leading blanks
307 if (@bad = BadWords::check($pc->[3])) {
308 dbg("PCPROT: Bad words: @bad, dropped") if isdbg('chanerr');
313 # if this is a 'nodx' node then ignore it
314 if ($badnode->in($pc->[5])) {
315 dbg("PCPROT: Bad Node, dropped") if isdbg('chanerr');
319 # if this is a 'bad spotter' user then ignore it
320 my $nossid = $pc->[1];
321 $nossid =~ s/-\d+$//;
322 if ($badspotter->in($nossid)) {
323 dbg("PCPROT: Bad Spotter, dropped") if isdbg('chanerr');
327 # ignore PC12s from origins that use PCxx protocol
328 my $oref = Route::get($origin);
329 if ($oref->do_pc9x) {
330 dbg("PCPROT: PC12 rxed from PC9x node, ignored") if isdbg('chanerr');
336 if ((($dxchan = DXChannel::get($pc->[2])) && $dxchan->is_user) || $pc->[4] =~ /^[\#\w.]+$/){
337 $self->send_chat(0, $line, @$pc[1..6]);
338 } elsif ($pc->[2] eq '*' || $pc->[2] eq $main::mycall) {
340 # ignore something that looks like a chat line coming in with sysop
341 # flag - this is a kludge...
342 if ($pc->[3] =~ /^\#\d+ / && $pc->[4] eq '*') {
343 dbg('PCPROT: Probable chat rewrite, dropped') if isdbg('chanerr');
347 # here's a bit of fun, convert incoming ann with a callsign in the first word
348 # or one saying 'to <call>' to a talk if we can route to the recipient
350 my $call = AnnTalk::is_talk_candidate($pc->[1], $pc->[3]);
352 my $ref = Route::get($call);
354 $dxchan = $ref->dxchan;
355 $dxchan->talk($pc->[1], $call, undef, $pc->[3], $pc->[5]) if $dxchan != $self;
362 $self->send_announce(0, $line, @$pc[1..6]);
364 $self->route($pc->[2], $line);
368 if (defined &Local::ann) {
371 $r = Local::ann($self, $line, @$pc[1..6]);
385 if (eph_dup($line, $eph_pc15_restime)) {
388 unless ($self->{isolate}) {
389 DXChannel::broadcast_nodes($line, $self) if $line =~ /\^H\d+\^?~?$/; # send it to everyone but me
405 my $ncall = $pc->[1];
406 my $newline = "PC16^";
408 # dos I want users from this channel?
409 unless ($self->user->wantpc16) {
410 dbg("PCPROT: don't send users to $self->{call}") if isdbg('chanerr');
415 if ($ncall eq $main::mycall) {
416 dbg("PCPROT: trying to alter config on this node from outside!") if isdbg('chanerr');
421 $h = 1 if DXChannel::get($ncall);
422 if ($h && $self->{call} ne $ncall) {
423 dbg("PCPROT: trying to update a local node, ignored") if isdbg('chanerr');
427 if (eph_dup($line)) {
431 # isolate now means only accept stuff from this call only
432 if ($self->{isolate} && $ncall ne $self->{call}) {
433 dbg("PCPROT: $self->{call} isolated, $ncall ignored") if isdbg('chanerr');
437 my $parent = Route::Node::get($ncall);
440 $dxchan = $parent->dxchan;
441 if ($dxchan && $dxchan ne $self) {
442 dbg("PCPROT: PC16 from $self->{call} trying to alter locally connected $ncall, ignored!") if isdbg('chanerr');
446 # input filter if required
447 return unless $self->in_filter_route($parent);
449 $parent = Route::Node->new($ncall);
453 if ($parent->via_pc92) {
454 dbg("PCPROT: non-local node controlled by PC92, ignored") if isdbg('chanerr');
461 for ($i = 2; $i < $#$pc; $i++) {
462 my ($call, $conf, $here) = $pc->[$i] =~ /^(\S+) (\S) (\d)/o;
463 next unless $call && $conf && defined $here && is_callsign($call);
464 next if $call eq $main::mycall;
466 eph_del_regex("^PC17\\^$call\\^$ncall");
468 $conf = $conf eq '*';
470 # reject this if we think it is a node already
471 my $r = Route::Node::get($call);
472 my $u = DXUser::get_current($call) unless $r;
473 if ($r || ($u && $u->is_node)) {
474 dbg("PCPROT: $call is a node") if isdbg('chanerr');
478 $r = Route::User::get($call);
479 my $flags = Route::here($here)|Route::conf($conf);
482 my $au = $r->addparent($parent);
483 if ($r->flags != $flags) {
487 push @rout, $r if $h && $au;
489 my @ans = $parent->add_user($call, $flags);
490 push @rout, @ans if $h && @ans;
493 # add this station to the user database, if required
494 my $user = DXUser::get_current($ncall);
495 $user = DXUser->new($call) unless $user;
496 $user->homenode($parent->call) if !$user->homenode;
497 $user->node($parent->call);
498 $user->lastin($main::systime) unless DXChannel::get($call);
501 # send info to all logged in thingies
502 $self->tell_login('loginu', "$ncall: $call") if $user->is_local_node;
503 $self->tell_buddies('loginb', $call, $ncall);
506 $self->route_pc16($origin, $line, $parent, @rout) if @rout;
507 # $self->route_pc92a($main::mycall, undef, $parent, @rout) if $h && $self->{state} eq 'normal';
521 my $ncall = $pc->[2];
522 my $ucall = $pc->[1];
524 eph_del_regex("^PC16\\^$ncall.*$ucall");
526 # do I want users from this channel?
527 unless ($self->user->wantpc16) {
528 dbg("PCPROT: don't send users to $self->{call}") if isdbg('chanerr');
532 if ($ncall eq $main::mycall) {
533 dbg("PCPROT: trying to alter config on this node from outside!") if isdbg('chanerr');
537 # isolate now means only accept stuff from this call only
538 if ($self->{isolate} && $ncall ne $self->{call}) {
539 dbg("PCPROT: $self->{call} isolated, $ncall ignored") if isdbg('chanerr');
543 my $uref = Route::User::get($ucall);
545 dbg("PCPROT: Route::User $ucall not in config") if isdbg('chanerr');
548 my $parent = Route::Node::get($ncall);
550 dbg("PCPROT: Route::Node $ncall not in config") if isdbg('chanerr');
554 $dxchan = DXChannel::get($ncall);
555 if ($dxchan && $dxchan ne $self) {
556 dbg("PCPROT: PC17 from $self->{call} trying to alter locally connected $ncall, ignored!") if isdbg('chanerr');
561 if ($parent->via_pc92) {
562 dbg("PCPROT: non-local node controlled by PC92, ignored") if isdbg('chanerr');
567 if (DXChannel::get($ucall)) {
568 dbg("PCPROT: trying do disconnect local user, ignored") if isdbg('chanerr');
572 # input filter if required and then remove user if present
573 # return unless $self->in_filter_route($parent);
574 $parent->del_user($uref);
576 # send info to all logged in thingies
577 my $user = DXUser::get_current($ncall);
578 $self->tell_login('logoutu', "$ncall: $ucall") if $user && $user->is_local_node;
579 $self->tell_buddies('logoutb', $ucall, $ncall);
581 if (eph_dup($line)) {
585 $self->route_pc17($origin, $line, $parent, $uref);
586 # $self->route_pc92d($main::mycall, undef, $parent, $uref) if $dxchan;
598 $self->state('init');
600 my $parent = Route::Node::get($self->{call});
602 # record the type and version offered
603 if (my ($version) = $pc->[1] =~ /DXSpider Version: (\d+\.\d+)/) {
604 $self->{version} = 53 + $version;
605 $self->user->version(53 + $version);
606 $parent->version(0 + $version);
607 my ($build) = $pc->[1] =~ /Build: (\d+(?:\.\d+)?)/;
608 $self->{build} = 0 + $build;
609 $self->user->build(0 + $build);
610 $parent->build(0 + $build);
611 dbg("DXSpider version $version build $build");
612 unless ($self->is_spider) {
613 dbg("Change U " . $self->user->sort . " C $self->{sort} -> S");
614 $self->user->sort('S');
618 # $self->{handle_xml}++ if DXXml::available() && $pc->[1] =~ /\bxml/;
620 dbg("Unknown software");
621 $self->version(50.0);
622 $self->version($pc->[2] / 100) if $pc->[2] && $pc->[2] =~ /^\d+$/;
623 $self->user->version($self->version);
626 if ($pc->[1] =~ /\bpc9x/) {
627 if ($self->{isolate}) {
628 dbg("pc9x recognised, but $self->{call} is isolated, using old protocol");
629 } elsif (!$self->user->wantpc9x) {
630 dbg("pc9x explicitly switched off on $self->{call}, using old protocol");
632 $self->{do_pc9x} = 1;
633 dbg("Do px9x set on $self->{call}");
637 # first clear out any nodes on this dxchannel
638 my @rout = $parent->del_nodes;
639 $self->route_pc21($origin, $line, @rout, $parent) if @rout;
640 $self->send_local_config();
648 # add this station to the user database, if required (don't remove SSID from nodes)
649 my $user = DXUser::get_current($call);
651 $user = DXUser->new($call);
652 $user->priv(1); # I have relented and defaulted nodes
654 $user->homenode($call);
661 # incoming cluster list
671 my $newline = "PC19^";
674 my (@rout, @pc92out);
676 # first get the INTERFACE node
677 my $parent = Route::Node::get($self->{call});
679 dbg("PCPROT: my parent $self->{call} has disappeared");
688 # We are making a major change from now on. We are only going to accept
689 # PC19s from directly connected nodes. This means that we are probably
690 # going to throw away most of the data that we are being sent.
692 # The justification for this is that most of it is wrong or out of date
695 # From now on we are only going to believe PC92 data and locally connected
698 for ($i = 1; $i < $#$pc-1; $i += 4) {
699 my $here = $pc->[$i];
700 my $call = uc $pc->[$i+1];
701 my $conf = $pc->[$i+2];
702 my $ver = $pc->[$i+3];
703 next unless defined $here && defined $conf && is_callsign($call);
705 eph_del_regex("^PC(?:21\\^$call|17\\^[^\\^]+\\^$call)");
707 # check for sane parameters
708 # $ver = 5000 if $ver eq '0000';
709 next unless $ver && $ver =~ /^\d+$/;
710 next if $ver < 5000; # only works with version 5 software
711 next if length $call < 3; # min 3 letter callsigns
712 next if $call eq $main::mycall || $call eq $main::myalias;
714 # check that this PC19 isn't trying to alter the wrong dxchan
716 my $dxchan = DXChannel::get($call);
718 if ($dxchan == $self) {
721 dbg("PCPROT: PC19 from $self->{call} trying to alter wrong locally connected $call, ignored!") if isdbg('chanerr');
726 # isolate now means only accept stuff from this call only
727 if ($self->{isolate} && $call ne $self->{call}) {
728 dbg("PCPROT: $self->{call} isolated, $call ignored") if isdbg('chanerr');
732 my $user = check_add_node($call);
734 # if (eph_dup($genline)) {
735 # dbg("PCPROT: dup PC19 for $call detected") if isdbg('chanerr');
741 if ($parent->via_pc92) {
742 dbg("PCPROT: non-local node controlled by PC92, ignored") if isdbg('chanerr');
747 my $r = Route::Node::get($call);
748 my $flags = Route::here($here)|Route::conf($conf);
750 # modify the routing table if it is in it, otherwise store it in the pc19list for now
753 if ($call ne $parent->call) {
754 if ($self->in_filter_route($r)) {
755 $ar = $parent->add($call, $ver, $flags);
756 # push @rout, $ar if $ar;
761 if ($r->version ne $ver || $r->flags != $flags) {
767 if ($call eq $self->{call} || $user->wantroutepc19) {
768 my $new = Route->new($call); # throw away
769 if ($self->in_filter_route($new)) {
770 my $ar = $parent->add($call, $ver, $flags);
771 $user->wantroutepc19(1) unless defined $user->wantroutepc19;
772 push @rout, $ar if $ar;
773 push @pc92out, $r if $h;
780 # unbusy and stop and outgoing mail (ie if somehow we receive another PC19 without a disconnect)
781 my $mref = DXMsg::get_busy($call);
782 $mref->stop_msg($call) if $mref;
784 $user->lastin($main::systime) unless DXChannel::get($call);
788 # we are not automatically sending out PC19s, we send out a composite PC21,PC19 instead
789 # but remember there will only be one (pair) these because any extras will be
792 # $self->route_pc21($self->{call}, $line, @rout);
793 $self->route_pc19($self->{call}, $line, @rout);
795 if (@pc92out && !$pc92_slug_changes) {
796 $self->route_pc92a($main::mycall, $line, $main::routeroot, @pc92out) if $self->{state} eq 'normal';
800 # send local configuration
809 if ($self->{do_pc9x} && $self->{state} ne 'init92') {
810 $self->send("Reseting to oldstyle routing because login call not sent in any pc92");
811 $self->{do_pc9x} = 0;
813 $self->send_local_config;
815 $self->state('normal');
816 $self->{lastping} = 0;
817 $self->route_pc92a($main::mycall, undef, $main::routeroot, Route::Node::get($self->{call}));
820 # delete a cluster from the list
822 # This should never occur for directly connected nodes.
832 my $call = uc $pc->[1];
834 eph_del_regex("^PC1[679].*$call");
836 # if I get a PC21 from the same callsign as self then ignore it
837 if ($call eq $self->{call}) {
838 dbg("PCPROT: self referencing PC21 from $self->{call}");
842 # for the above reason and also because of the check for PC21s coming
843 # in for self->call from outside being ignored further down
844 # we don't need any isolation code here, because we will never
845 # act on a PC21 with self->call in it.
847 my $parent = Route::Node::get($self->{call});
849 dbg("PCPROT: my parent $self->{call} has disappeared");
856 if ($call ne $main::mycall && $call ne $main::myalias) { # don't allow malicious buggers to disconnect me!
857 my $node = Route::Node::get($call);
860 if ($node->via_pc92) {
861 dbg("PCPROT: controlled by PC92, ignored") if isdbg('chanerr');
865 my $dxchan = DXChannel::get($call);
866 if ($dxchan && $dxchan != $self) {
867 dbg("PCPROT: PC21 from $self->{call} trying to alter locally connected $call, ignored!") if isdbg('chan');
872 return unless $self->in_filter_route($node);
874 # routing objects, force a PC21 if it is local
875 push @rout, $node->del($parent);
876 push @rout, $call if $dxchan && @rout == 0;
879 dbg("PCPROT: I WILL _NOT_ be disconnected!") if isdbg('chan');
883 if (eph_dup($line)) {
888 $self->route_pc21($origin, $line, @rout);
889 # $self->route_pc92d($main::mycall, $line, $main::routeroot, @rout);
902 if ($self->{do_pc9x}) {
903 if ($self->{state} ne 'init92') {
904 $self->send("Reseting to oldstyle routing because login call not sent in any pc92");
905 $self->{do_pc9x} = 0;
908 $self->{lastping} = 0;
909 $self->state('normal');
910 $self->route_pc92a($main::mycall, undef, $main::routeroot, Route::Node::get($self->{call}));
922 # route foreign' pc27s
924 if ($pc->[8] ne $main::mycall) {
925 $self->route($pc->[8], $line);
932 my $d = cltounix($pc->[1], sprintf("%02d18Z", $pc->[2]));
933 my $sfi = unpad($pc->[3]);
934 my $k = unpad($pc->[4]);
935 my $i = unpad($pc->[5]);
936 my ($r) = $pc->[6] =~ /R=(\d+)/;
938 if (($pcno == 23 && $d < $main::systime - $pc23_max_age) || $d > $main::systime + 1500 || $pc->[2] < 0 || $pc->[2] > 23) {
939 dbg("PCPROT: WWV Date ($pc->[1] $pc->[2]) out of range") if isdbg('chanerr');
943 # global wwv filtering on INPUT
944 my @dxcc = ((Prefix::cty_data($pc->[7]))[0..2], (Prefix::cty_data($pc->[8]))[0..2]);
945 if ($self->{inwwvfilter}) {
946 my ($filter, $hops) = $self->{inwwvfilter}->it(@$pc[7,8], $origin, @dxcc);
948 dbg("PCPROT: Rejected by input wwv filter") if isdbg('chanerr');
952 $pc->[7] =~ s/-\d+$//o; # remove spotter's ssid
953 if (Geomag::dup($d,$sfi,$k,$i,$pc->[6],$pc->[7])) {
954 dbg("PCPROT: Dup WWV Spot ignored\n") if isdbg('chanerr');
958 # note this only takes the first one it gets
959 Geomag::update($d, $pc->[2], $sfi, $k, $i, @$pc[6..8], $r);
961 if (defined &Local::wwv) {
964 $rep = Local::wwv($self, $pc->[1], $pc->[2], $sfi, $k, $i, @$pc[6..8], $r);
969 # DON'T be silly and send on PC27s!
970 return if $pcno == 27;
972 # broadcast to the eager world
973 send_wwv_spot($self, $line, $d, $pc->[2], $sfi, $k, $i, @$pc[6..8]);
985 my $call = uc $pc->[1];
987 $nref = Route::Node::get($call);
988 $uref = Route::User::get($call);
989 return unless $nref || $uref; # if we don't know where they are, it's pointless sending it on
991 if (eph_dup($line)) {
995 $nref->here($pc->[2]) if $nref;
996 $uref->here($pc->[2]) if $uref;
997 my $ref = $nref || $uref;
998 return unless $self->in_filter_route($ref);
1000 $self->route_pc24($origin, $line, $ref, $pc->[3]);
1012 if ($pc->[1] ne $main::mycall) {
1013 $self->route($pc->[1], $line);
1016 if ($pc->[2] eq $main::mycall) {
1017 dbg("PCPROT: Trying to merge to myself, ignored") if isdbg('chan');
1021 Log('DXProt', "Merge request for $pc->[3] spots and $pc->[4] WWV from $pc->[2]");
1025 my @in = reverse Spot::search(1, undef, undef, 0, $pc->[3]);
1028 $self->send(pc26(@{$in}[0..4], $pc->[2]));
1034 my @in = reverse Geomag::search(0, $pc->[4], time, 1);
1037 $self->send(pc27(@{$in}[0..5], $pc->[2]));
1042 sub handle_26 {goto &handle_11}
1043 sub handle_27 {goto &handle_23}
1045 # mail/file handling
1054 if ($pc->[1] eq $main::mycall) {
1056 my $sub = "DXMsg::handle_$pcno";
1059 $self->route($pc->[1], $line) unless $self->is_clx;
1063 sub handle_29 {goto &handle_28}
1064 sub handle_30 {goto &handle_28}
1065 sub handle_31 {goto &handle_28}
1066 sub handle_32 {goto &handle_28}
1067 sub handle_33 {goto &handle_28}
1077 if (eph_dup($line, $eph_pc34_restime)) {
1080 $self->process_rcmd($pc->[1], $pc->[2], $pc->[2], $pc->[3]);
1084 # remote command replies
1093 eph_del_regex("^PC35\\^$pc->[2]\\^$pc->[1]\\^");
1094 $self->process_rcmd_reply($pc->[1], $pc->[2], $pc->[1], $pc->[3]);
1097 sub handle_36 {goto &handle_34}
1108 if ($pc->[1] eq $main::mycall) {
1110 my $sub = "DXDb::handle_$pcno";
1113 $self->route($pc->[1], $line) unless $self->is_clx;
1117 # node connected list from neighbour
1127 # incoming disconnect
1136 if ($pc->[1] eq $self->{call}) {
1137 $self->disconnect(1);
1139 dbg("PCPROT: came in on wrong channel") if isdbg('chanerr');
1143 sub handle_40 {goto &handle_28}
1154 my $call = $pc->[1];
1155 my $sort = $pc->[2];
1158 my $l = "PC41^$call^$sort";
1159 if (eph_dup($l, $eph_info_restime)) {
1163 # input filter if required
1164 # my $ref = Route::get($call) || Route->new($call);
1165 # return unless $self->in_filter_route($ref);
1167 if ($val eq $sort || $val =~ /^\s*$/) {
1168 dbg('PCPROT: invalid value') if isdbg('chanerr');
1172 if ($call eq $main::mycall || $call eq $main::myalias) {
1173 dbg "DXPROT: PC41 trying to update $call from outside via $origin, ignored";
1176 my $chan = DXChannel::get($call);
1178 dbg "DXPROT: PC41 trying to update online $call from outside via $origin, ignored";
1182 # add this station to the user database, if required
1183 my $user = DXUser::get_current($call);
1184 $user = DXUser->new($call) unless $user;
1187 if (($val =~ /spotter/i || $val =~ /self/i) && $user->name && $user->name ne $val) {
1188 dbg("PCPROT: invalid name") if isdbg('chanerr');
1192 } elsif ($sort == 2) {
1194 } elsif ($sort == 3) {
1195 if (is_latlong($val)) {
1196 my ($lat, $long) = DXBearing::stoll($val);
1197 $user->lat($lat) if $lat;
1198 $user->long($long) if $long;
1199 $user->qra(DXBearing::lltoqra($lat, $long)) unless $user->qra;
1201 dbg('PCPROT: not a valid lat/long') if isdbg('chanerr');
1204 } elsif ($sort == 4) {
1205 $user->homenode($val);
1206 } elsif ($sort == 5) {
1207 if (is_qra(uc $val)) {
1208 my ($lat, $long) = DXBearing::qratoll(uc $val);
1209 $user->lat($lat) if $lat && !$user->lat;
1210 $user->long($long) if $long && !$user->long;
1211 $user->qra(uc $val);
1213 dbg('PCPROT: not a valid QRA locator') if isdbg('chanerr');
1217 $user->lastoper($main::systime); # to cut down on excessive for/opers being generated
1220 unless ($self->{isolate}) {
1221 DXChannel::broadcast_nodes($line, $self); # send it to everyone but me
1224 # perhaps this IS what we want after all
1225 # $self->route_pc41($ref, $call, $sort, $val, $pc->[4]);
1228 sub handle_42 {goto &handle_28}
1232 sub handle_44 {goto &handle_37}
1233 sub handle_45 {goto &handle_37}
1234 sub handle_46 {goto &handle_37}
1235 sub handle_47 {goto &handle_37}
1236 sub handle_48 {goto &handle_37}
1238 # message and database
1247 if (eph_dup($line)) {
1251 if ($pc->[1] eq $main::mycall) {
1252 DXMsg::handle_49($self, @$pc);
1254 $self->route($pc->[1], $line) unless $self->is_clx;
1258 # keep alive/user list
1267 return if (eph_dup($line));
1269 my $call = $pc->[1];
1271 my $node = Route::Node::get($call);
1273 return unless $node->call eq $self->{call};
1274 $node->usercount($pc->[2]) unless $node->users;
1276 $node->PC92C_dxchan($self->call, $pc->[-1]);
1278 # input filter if required
1279 # return unless $self->in_filter_route($node);
1281 unless ($self->{isolate}) {
1282 DXChannel::broadcast_nodes($line, $self); # send it to everyone but me
1284 # $self->route_pc50($origin, $line, $node, $pc->[2], $pc->[3]) unless eph_dup($line);
1288 # incoming ping requests/answers
1298 my $from = $pc->[2];
1299 my $flag = $pc->[3];
1301 if ($to eq $main::myalias) {
1302 dbg("DXPROT: Ping addressed to \$myalias ($main::myalias), ignored") if isdbg('chan');
1307 if ($to eq $main::mycall) {
1309 $self->send(pc51($from, $to, '0'));
1311 DXXml::Ping::handle_ping_reply($self, $from);
1314 if (eph_dup($line)) {
1317 # route down an appropriate thingy
1318 $self->route($to, $line);
1322 sub handle_61 { goto &handle_11; }
1324 # dunno but route it
1333 my $call = $pc->[1];
1334 if ($call ne $main::mycall) {
1335 $self->route($call, $line);
1348 my $call = $pc->[1];
1351 my $d = cltounix($call, sprintf("%02d18Z", $pc->[2]));
1352 if (($pcno == 23 && $d < $main::systime - $pc23_max_age) || $d > $main::systime + 1500 || $pc->[2] < 0 || $pc->[2] > 23) {
1353 dbg("PCPROT: WCY Date ($call $pc->[2]) out of range") if isdbg('chanerr');
1356 $pc = [ map { unpad($_) } @$pc ];
1358 dbg("PCPROT: Dup WCY Spot ignored\n") if isdbg('chanerr');
1362 my $wcy = WCY::update($d, @$pc[2..12]);
1364 if (defined &Local::wcy) {
1367 $rep = Local::wcy($self, @$pc[1..12]);
1372 # broadcast to the eager world
1373 send_wcy_spot($self, $line, $d, @$pc[2..12]);
1376 # remote commands (incoming)
1385 $self->process_rcmd($pc->[1], $pc->[2], $pc->[3], $pc->[4]);
1388 # remote command replies
1397 $self->process_rcmd_reply($pc->[1], $pc->[2], $pc->[3], $pc->[4]);
1400 # decode a pc92 call: flag call : version : build
1401 sub _decode_pc92_call
1404 my @part = split /:/, $icall;
1405 my ($flag, $call) = unpack "A A*", $part[0];
1406 unless (defined $flag && $flag ge '0' && $flag le '7') {
1407 dbg("PCPROT: $icall no flag byte (0-7) at front of call, ignored") if isdbg('chanerr');
1410 unless ($call && is_callsign($call)) {
1411 dbg("PCPROT: $icall no recognisable callsign, ignored") if isdbg('chanerr');
1414 my $is_node = $flag & 4;
1415 my $is_extnode = $flag & 2;
1416 my $here = $flag & 1;
1418 $ip ||= $part[1] if $part[1] && ($part[1] =~ /^(?:\d+\.)+/ || $part[1] =~ /^(?:(?:[abcdef\d]+)?,)+/);
1419 $ip =~ s/,/:/g if $ip;
1420 return ($call, $is_node, $is_extnode, $here, $part[1], $part[2], $ip);
1423 # decode a pc92 call: flag call : version : build
1424 sub _encode_pc92_call
1428 # plain call or value
1429 return $ref unless ref $ref;
1431 my $ext = shift || 0;
1433 my $call = $ref->call;
1435 $flag |= $ref->here ? 1 : 0;
1436 if ($ref->isa('Route::Node') || $ref->isa('DXProt')) {
1438 my $dxchan = DXChannel::get($call);
1439 $flag |= 2 if $call ne $main::mycall && $dxchan && !$dxchan->{do_pc9x};
1440 if (($ext & 1) && $ref->version) {
1441 my $version = $ref->version || 1.0;
1442 $version = $version * 100 + 5300 if $version < 50;
1443 $extra .= ":" . $version;
1446 if (($ext & 2) && $ref->ip) {
1449 $extra .= ':' . $ip;
1451 return "$flag$call$extra";
1464 my ($call, $is_node, $is_extnode, $here, $version, $build, $ip) = @$s;
1468 my $ncall = $parent->call;
1470 dbg("ROUTE: added node $call to $ncall") if isdbg('routelow');
1471 @rout = $parent->add($call, $version, Route::here($here), $ip);
1472 my $r = Route::Node::get($call);
1473 $r->PC92C_dxchan($dxchan->call, $hops) if $r;
1476 Log('DXProt', "PC92A $call -> $ip on $ncall");
1479 dbg("ROUTE: added user $call to $ncall") if isdbg('routelow');
1480 @rout = $parent->add_user($call, Route::here($here), $ip);
1481 $dxchan->tell_buddies('loginb', $call, $ncall) if $dxchan;
1482 my $r = Route::User::get($call);
1485 Log('DXProt', "PC92A $call -> $ip on $ncall");
1488 if ($pc92_slug_changes && $parent == $main::routeroot) {
1489 $things_add{$call} = Route::get($call);
1490 delete $things_del{$call};
1501 my ($call, $is_node, $is_extnode, $here, $version, $build) = @$s;
1506 $ref = Route::Node::get($call);
1507 dbg("ROUTE: deleting node $call from " . $parent->call) if isdbg('routelow');
1508 @rout = $ref->del($parent) if $ref;
1510 dbg("ROUTE: deleting user $call from " . $parent->call) if isdbg('routelow');
1511 $ref = Route::User::get($call);
1513 $dxchan->tell_buddies('logoutb', $call, $parent->call) if $dxchan;
1514 @rout = $parent->del_user($ref);
1517 if ($pc92_slug_changes && $parent == $main::routeroot) {
1518 $things_del{$call} = $ref unless exists $things_add{$call};
1519 delete $things_add{$call};
1525 # this will only happen if we are slugging changes and
1526 # there are some changes to be sent, it will create an add or a delete
1528 sub gen_pc92_changes
1530 my @add = values %things_add;
1531 my @del = values %things_del;
1532 return (\@add, \@del);
1535 sub clear_pc92_changes
1537 %things_add = %things_del = ();
1538 $last_pc92_slug = $main::systime;
1547 return $_last_pc9x_id;
1552 if (!$_last_time || $_last_time != $main::systime) {
1553 $_last_time = $main::systime;
1555 return $_last_pc9x_id = $_last_time - $main::systime_daystart;
1558 return $_last_pc9x_id = sprintf "%d.%02d", $_last_time - $main::systime_daystart, $_last_occurs;
1569 # check that the time is between 0 >= $t < 86400
1570 unless ($t >= 0 && $t < 86400) {
1571 dbg("PCPROT: time invalid t: $t, ignored") if isdbg('chanerr');
1575 # check that the time of this pc9x is within tolerance (default 15 mins either way)
1576 my $now = $main::systime - $main::systime_daystart ;
1577 my $diff = abs($now - $t);
1578 unless ($diff < $pc9x_time_tolerance || 86400 - $diff < $pc9x_time_tolerance) {
1579 my $c = ref $call ? $call->call : $call;
1580 dbg("PC9XERR: $c time out of range t: $t now: $now diff: $diff > $pc9x_time_tolerance, ignored") if isdbg('chan');
1584 my $parent = ref $call ? $call : Route::Node::get($call);
1586 # we only do this for external calls whose routing table
1587 # record come and go. The reference for mycall is permanent
1588 # and not that frequently used, it also never times out, so
1589 # the id on it is completely unreliable. Besides, only commands
1590 # originating on this box will go through this code...
1591 if ($parent->call ne $main::mycall) {
1592 my $lastid = $parent->lastid;
1593 if (defined $lastid) {
1595 # note that this is where we determine whether this pc9x has come in yesterday
1596 # but is still greater (modulo 86400) than the lastid or is simply an old
1597 # duplicate sentence. To determine this we need to do some module 86400
1598 # arithmetic. High numbers mean that this is an old duplicate sentence,
1599 # low numbers that it is a new sentence.
1601 # Typically you will see yesterday being taken on $t = 84, $lastid = 86235
1602 # and old dupes with $t = 234, $lastid = 256 (which give answers 249 and
1603 # 86378 respectively in the calculation below).
1605 if ($t+86400-$lastid > $pc9x_past_age) {
1606 dbg("PCPROT: dup id on $t <= lastid $lastid, ignored") if isdbg('chanerr') || isdbg('pc92dedupe');
1609 } elsif ($t == $lastid) {
1610 dbg("PCPROT: dup id on $t == lastid $lastid, ignored") if isdbg('chanerr') || isdbg('pc92dedupe');
1613 # check that if we have a low number in lastid that yesterday's numbers
1614 # (likely in the 85000+ area) don't override them, thus causing flip flopping
1615 if ($lastid+86400-$t < $pc9x_past_age) {
1616 dbg("PCPROT: dup id on $t in yesterday, lastid $lastid, ignored") if isdbg('chanerr') || isdbg('pc92dedupe');
1623 $parent = Route::Node->new($call);
1625 dbg("PCPROT: $call does not exist, ignored") if isdbg('pc92dedupe');
1628 if (isdbg('pc92dedupe')) {
1629 my $exists = exists $parent->{lastid}; # naughty, naughty :-)
1630 my $val = $parent->{lastid};
1631 my $s = $exists ? (defined $val ? $val : 'exists/undef') : 'undef';
1632 dbg("PCPROT: $call pc92 id lastid $s -> $t");
1634 $parent->lastid($t);
1639 sub pc92_handle_first_slot
1646 my $oparent = $parent;
1650 my ($call, $is_node, $is_extnode, $here, $version, $build) = @$slot;
1651 if ($call && $is_node) {
1652 if ($call eq $main::mycall) {
1653 dbg("PCPROT: $call looped back onto \$main::mycall ($main::mycall), ignored") if isdbg('chan');
1656 if ($call eq $main::myalias) {
1657 dbg("PCPROT: $call looped back onto \$main::myalias ($main::myalias), ignored") if isdbg('chan');
1660 # this is only accepted from my "self".
1661 # this also kills configs from PC92 nodes with external PC19 nodes that are also
1662 # locally connected. Local nodes always take precedence. But we remember the lastid
1663 # to try to reduce the number of dupe PC92s for this external node.
1664 if (DXChannel::get($call) && $call ne $self->{call}) {
1665 $parent = check_pc9x_t($call, $t, 92); # this will update the lastid time
1666 dbg("PCPROT: locally connected node $call from other another node $self->{call}, ignored") if isdbg('chanerr');
1670 # reparent to external node (note that we must have received a 'C' or 'A' record
1671 # from the true parent node for this external before we get one for the this node
1672 unless ($parent = Route::Node::get($call)) {
1673 if ($is_extnode && $oparent) {
1674 @radd = _add_thingy($oparent, $slot, $self, $hops);
1677 dbg("PCPROT: no previous C or A for this external node received, ignored") if isdbg('chanerr');
1681 $parent = check_pc9x_t($call, $t, 92) || return;
1682 $parent->via_pc92(1);
1683 $parent->PC92C_dxchan($self->{call}, $hops);
1686 dbg("PCPROT: must be \$mycall or external node as first entry, ignored") if isdbg('chanerr');
1689 $parent->here(Route::here($here));
1690 $parent->version($version || $pc19_version) if $version;
1691 $parent->build($build) if $build;
1692 $parent->PC92C_dxchan($self->{call}, $hops) unless $self->{call} eq $parent->call;
1693 return ($parent, @radd);
1696 # DXSpider routing entries
1707 my $pcall = $pc->[1];
1709 my $sort = $pc->[3];
1710 my $hops = $pc->[-1];
1712 # this catches loops of A/Ds
1713 # if (eph_dup($line, $pc9x_dupe_age)) {
1717 if ($pcall eq $main::mycall) {
1718 dbg("PCPROT: looped back, ignored") if isdbg('chan');
1722 if ($pcall eq $main::myalias) {
1723 dbg("PCPROT: looped back to \$myalias ($main::myalias), misconfiguration ignored") if isdbg('chan');
1727 if ($pcall eq $self->{call} && $self->{state} eq 'init') {
1728 if ($self->{isolate}) {
1729 dbg("DXPROT: PC9x received, but $pcall is isolated, ignored");
1731 } elsif (!$self->user->wantpc9x) {
1732 dbg("DXPROT: PC9x explicitly switched off on $pcall, ignored");
1735 $self->state('init92');
1736 $self->{do_pc9x} = 1;
1737 dbg("DXPROT: Do pc9x set on $pcall");
1740 unless ($self->{do_pc9x}) {
1741 dbg("PCPROT: PC9x come in from non-PC9x node, ignored") if isdbg('chanerr');
1745 # don't create routing entries for D records that don't already exist
1746 # this is what causes all those PC92 loops!
1747 my $parent = check_pc9x_t($pcall, $t, 92, $sort ne 'D') || return;
1748 my $oparent = $parent;
1750 $parent->do_pc9x(1);
1751 $parent->via_pc92(1);
1753 if ($sort eq 'F' || $sort eq 'R') {
1755 # this is the route finding section
1756 # here is where the consequences of the 'find' command
1759 my $from = $pc->[4];
1760 my $target = $pc->[5];
1766 if ($ref = DXChannel::get($target)) {
1767 $flag = 1; # we are directly connected
1769 $ref = Route::get($target);
1770 $dxchan = $ref->dxchan;
1773 if ($ref && $flag && $dxchan) {
1774 $self->send(pc92r($from, $target, $flag, int($dxchan->{pingave}*1000)));
1777 } elsif ($sort eq 'R') {
1778 if (my $dxchan = DXChannel::get($from)) {
1779 handle_pc92_find_reply($dxchan, $pcall, $from, $target, @$pc[6,7]);
1781 my $ref = Route::get($from);
1783 my @dxchan = grep {$_->do_pc9x} $ref->alldxchan;
1785 $_->send($line) for @dxchan;
1787 dbg("PCPROT: no return route, ignored") if isdbg('chanerr')
1790 dbg("PCPROT: no return route, ignored") if isdbg('chanerr')
1796 } elsif ($sort eq 'K') {
1797 $pc92Kin += length $line;
1799 # remember the last channel we arrived on
1800 $parent->PC92C_dxchan($self->{call}, $hops) unless $self->{call} eq $parent->call;
1802 my @ent = _decode_pc92_call($pc->[4]);
1807 ($parent, $add) = $self->pc92_handle_first_slot(\@ent, $parent, $t, $hops);
1808 return unless $parent; # dupe
1810 push @radd, $add if $add;
1812 $parent->version($ent[4]) if $ent[4];
1813 $parent->build($ent[5]) if $ent[5];
1815 dbg("ROUTE: reset obscount on $parent->{call} now " . $parent->obscount) if isdbg('obscount');
1817 } elsif ($sort eq 'A' || $sort eq 'D' || $sort eq 'C') {
1819 $pc92Ain += length $line if $sort eq 'A';
1820 $pc92Cin += length $line if $sort eq 'C';
1821 $pc92Din += length $line if $sort eq 'D';
1823 # remember the last channel we arrived on
1824 $parent->PC92C_dxchan($self->{call}, $hops) unless $self->{call} eq $parent->call;
1826 # this is the main route section
1827 # here is where all the routes are created and destroyed
1829 # cope with missing duplicate node calls in the first slot
1830 my $me = $pc->[4] || '';
1831 $me ||= _encode_pc92_call($parent) unless $me ;
1833 my @ent = map {my @a = _decode_pc92_call($_); @a ? \@a : ()} grep {$_ && /^[0-7]/} $me, @$pc[5 .. $#$pc];
1837 # look at the first one which will always be a node of some sort
1838 # except in the case of 'A' or 'D' in which the $pcall is used
1839 # otherwise use the node call and update any information
1840 # that needs to be done.
1843 ($parent, $add) = $self->pc92_handle_first_slot($ent[0], $parent, $t, $hops);
1844 return unless $parent; # dupe
1847 push @radd, $add if $add;
1850 # do a pass through removing any references to either mycall
1854 next unless $_ && @$_;
1855 if ($_->[0] eq $main::mycall) {
1856 dbg("PCPROT: $_->[0] refers to me, ignored") if isdbg('chanerr');
1864 push @radd, _add_thingy($parent, $_, $self, $hops);
1866 } elsif ($sort eq 'D') {
1868 push @rdel, _del_thingy($parent, $_, $self);
1870 } elsif ($sort eq 'C') {
1871 my (@nodes, @users);
1873 # we reset obscounts on config records as well as K records
1875 dbg("ROUTE: reset obscount on $parent->{call} now " . $parent->obscount) if isdbg('obscount');
1878 foreach my $r (@nent) {
1879 # my ($call, $is_node, $is_extnode, $here, $version, $build) = _decode_pc92_call($_);
1882 push @nodes, $r->[0];
1884 push @users, $r->[0];
1887 dbg("PCPROT: pc92 call entry '$_' not decoded, ignored") if isdbg('chanerr');
1891 my ($dnodes, $dusers, $nnodes, $nusers) = $parent->calc_config_changes(\@nodes, \@users);
1894 foreach my $r (@nent) {
1897 push @radd,_add_thingy($parent, $r, $self, $hops) if grep $call eq $_, (@$nnodes, @$nusers);
1901 foreach my $r (@$dnodes) {
1902 push @rdel,_del_thingy($parent, [$r, 1], $self);
1904 foreach my $r (@$dusers) {
1905 push @rdel,_del_thingy($parent, [$r, 0], $self);
1908 # remember this last PC92C for rebroadcast on demand
1909 $parent->last_PC92C($line);
1911 dbg("PCPROT: unknown action '$sort', ignored") if isdbg('chanerr');
1915 foreach my $r (@rdel) {
1918 $self->route_pc21($pcall, undef, $r) if $r->isa('Route::Node');
1919 $self->route_pc17($pcall, undef, $parent, $r) if $r->isa('Route::User');
1921 my @pc19 = grep { $_ && $_->isa('Route::Node') } @radd;
1922 my @pc16 = grep { $_ && $_->isa('Route::User') } @radd;
1923 unshift @pc19, $parent if $self->{state} eq 'init92' && $oparent == $parent;
1924 $self->route_pc19($pcall, undef, @pc19) if @pc19;
1925 $self->route_pc16($pcall, undef, $parent, @pc16) if @pc16;
1928 # broadcast it if we get here
1929 $self->broadcast_route_pc9x($pcall, undef, $line, 0);
1932 # get all the routes for a thing, bearing in mind that the thing (e.g. a user)
1933 # might be on two or more nodes at the same time or that there may be more than
1934 # one equal distance neighbour to a node.
1936 # What this means that if sh/route g1tlh shows that he is on (say) two nodes, then
1937 # a Route::findroutes is done on each of those two nodes, the best route(s) taken from
1938 # each and then combined to give a set of dxchans to send the PC9x record down
1940 sub find_pc9x_routes
1943 my $ref = Route::get($to);
1947 if ($ref->isa('Route::User')) {
1948 my $dxchan = DXChannel::get($to);
1949 push @parent, $to if $dxchan;
1950 push @parent, $ref->parents;
1954 foreach my $p (@parent) {
1956 my @routes = Route::findroutes($p);
1957 foreach my $r (@routes) {
1958 $lasthops = $r->[0] unless defined $lasthops;
1959 if ($r->[0] == $lasthops) {
1960 $cand{$r->[1]->call} = $r->[1];
1966 return values %cand;
1977 # $self->{do_pc9x} ||= 1;
1979 my $pcall = $pc->[1]; # this is now checked earlier
1981 # remember that we are converting PC10->PC93 and self will be $main::me if it
1983 unless ($self->{do_pc9x}) {
1984 dbg("PCPROT: PC9x come in from non-PC9x node, ignored") if isdbg('chanerr');
1989 my $parent = check_pc9x_t($pcall, $t, 93, 1) || return;
1991 my $to = uc $pc->[3];
1992 my $from = uc $pc->[4];
1993 my $via = uc $pc->[5];
1994 my $text = $pc->[6];
1995 my $onode = uc $pc->[7];
1996 $onode = $pcall if @$pc <= 8;
1998 # this is catch loops caused by bad software ...
1999 if (eph_dup("PC93|$from|$text|$onode", $pc10_dupe_age)) {
2003 # will we allow it at all?
2006 if (@bad = BadWords::check($text)) {
2007 dbg("PCPROT: Bad words: @bad, dropped") if isdbg('chanerr');
2012 # if this is a 'bad spotter' user then ignore it
2014 $nossid =~ s/-\d+$//;
2015 if ($badspotter->in($nossid)) {
2016 dbg("PCPROT: Bad Spotter, dropped") if isdbg('chanerr');
2020 # ignore PC93 coming in from outside this node with a target of local
2021 if ($to eq 'LOCAL' && $self != $main::me) {
2022 dbg("PCPROT: incoming LOCAL chat not from local node, ignored") if isdbg('chanerr');
2026 # if it is routeable then then treat it like a talk
2027 my $ref = Route::get($to);
2031 # convert to PC10 or local talks where appropriate
2032 # PC93 capable nodes of the same hop count all get a copy
2033 # if there is a PC10 node then it will get a copy and that
2034 # will be it. Hopefully such a node will not figure highly
2035 # in the route list, unless it is local, 'cos it don't issue PC92s!
2036 # note that both local and PC93s at the same time are possible if the
2037 # user on more than one node.
2038 my @routes = find_pc9x_routes($to);
2040 foreach $dxchan (@routes) {
2041 if (ref $dxchan && $dxchan->isa('DXChannel')) {
2042 if ($dxchan->{do_pc9x}) {
2043 $dxchan->send($line);
2045 $dxchan->talk($from, $to, $via, $text, $onode);
2048 dbg("ERROR: $to -> $dxchan is not a DXChannel! (convert to pc10)");
2053 } elsif ($to eq '*' || $to eq 'SYSOP' || $to eq 'WX') {
2055 my $sysop = $to eq 'SYSOP' ? '*' : ' ';
2056 my $wx = $to eq 'WX' ? '1' : '0';
2057 my $local = $via eq 'LOCAL' ? '*' : $via;
2059 $self->send_announce(1, pc12($from, $text, $local, $sysop, $wx, $pcall), $from, $local, $text, $sysop, $pcall, $wx, $via eq 'LOCAL' ? $via : undef);
2060 return if $via eq 'LOCAL';
2061 } elsif (!is_callsign($to) && $text =~ /^#\d+ /) {
2062 # chat messages really only locally connected users
2063 $self->send_chat(1, $line, $from, '*', $text, $to, $pcall, '0');
2066 # broadcast this chat sentence everywhere unless it is targetted to 'LOCAL'
2067 $self->broadcast_route_pc9x($pcall, undef, $line, 0) unless $to eq 'LOCAL' || $via eq 'LOCAL';
2070 # if get here then rebroadcast the thing with its Hop count decremented (if
2071 # there is one). If it has a hop count and it decrements to zero then don't
2074 # NOTE - don't arrive here UNLESS YOU WANT this lump of protocol to be
2086 unless (eph_dup($line)) {
2088 my $pcall = $pc->[1];
2089 unless (is_callsign($pcall)) {
2090 dbg("PCPROT: invalid callsign string '$pc->[1]', ignored") if isdbg('chanerr');
2094 my $parent = check_pc9x_t($pcall, $t, $pcno, 1) || return;
2095 $self->broadcast_route_pc9x($pcall, undef, $line, 0);
2097 unless ($self->{isolate}) {
2098 DXChannel::broadcast_nodes($line, $self) if $line =~ /\^H\d+\^?~?$/; # send it to everyone but me