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
47 $pc92filterdef $senderverify
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*1; # 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.
58 $senderverify = 0; # 1 - check for forged PC11 or PC61.
59 # 2 - if forged, dump them.
62 $pc92filterdef = bless ([
63 # tag, sort, field, priv, special parser
72 # this is a place to park an incoming PC11 in the sure and certain hope that
73 # a PC61 will be along soon. This has the side benefit that it will delay a
74 # a PC11 for one second - assuming that it is not removed by a PC61 version
76 # incoming talk commands
85 # this is to catch loops caused by bad software ...
86 if (eph_dup($line, $pc10_dupe_age)) {
90 # will we allow it at all?
93 if (@bad = BadWords::check($pc->[3])) {
94 dbg("PCPROT: Bad words: @bad, dropped") if isdbg('chanerr');
99 # is it for me or one of mine?
100 my ($from, $to, $via, $call, $dxchan);
102 if ($pc->[5] gt ' ') {
109 # if this is a 'nodx' node then ignore it
110 if ($badnode->in($pc->[6]) || ($via && $badnode->in($via))) {
111 dbg("PCPROT: Bad Node, dropped") if isdbg('chanerr');
115 # if this is a 'bad spotter' user then ignore it
117 $nossid =~ s/-\d+$//;
118 if ($badspotter->in($nossid)) {
119 dbg("PCPROT: Bad Spotter, dropped") if isdbg('chanerr');
123 # if we are converting announces to talk is it a dup?
125 if (AnnTalk::is_talk_candidate($from, $pc->[3]) && AnnTalk::dup($from, $to, $pc->[3])) {
126 dbg("PCPROT: Dupe talk from announce, dropped") if isdbg('chanerr');
131 # convert this to a PC93, coming from mycall with origin set and process it as such
132 $main::me->normal(pc93($to, $from, $via, $pc->[3], $pc->[6]));
147 my $recurse = shift || 0;
149 # route 'foreign' pc26s
151 if ($pc->[7] ne $main::mycall) {
152 $self->route($pc->[7], $line);
157 dbg("INPUT PC$pcno $line origin $origin recurse: $recurse") if isdbg("pc11");
159 # my ($hops) = $pc->[8] =~ /^H(\d+)/;
161 # is the spotted callsign blank? This should really be trapped earlier but it
162 # could break other protocol sentences. Also check for lower case characters.
163 if ($pc->[2] =~ /^\s*$/) {
164 dbg("PCPROT: blank callsign, dropped") if isdbg('chanerr');
167 if ($pc->[2] =~ /[a-z]/) {
168 dbg("PCPROT: lowercase characters, dropped") if isdbg('chanerr');
173 # if this is a 'nodx' node then ignore it
174 if ($badnode->in($pc->[7])) {
175 dbg("PCPROT: Bad Node $pc->[7], dropped") if isdbg('chanerr');
179 # if this is a 'bad spotter' or an unknown user then ignore it. BUT if it's got an IP address then allow it through
180 my $nossid = $pc->[6];
181 $nossid =~ s/-\d+$//;
182 if ($badspotter->in($nossid)) {
183 dbg("PCPROT: Bad Spotter $pc->[6], dropped") if isdbg('chanerr');
187 # convert the date to a unix date
188 my $d = cltounix($pc->[3], $pc->[4]);
189 # bang out (and don't pass on) if date is invalid or the spot is too old (or too young)
190 if (!$d || (($pcno == 11 || $pcno == 61) && ($d < $main::systime - $pc11_max_age || $d > $main::systime + 900))) {
191 dbg("PCPROT: Spot ignored, invalid date or out of range ($pc->[3] $pc->[4])\n") if isdbg('chanerr');
196 if ($baddx->in($pc->[2]) || BadWords::check($pc->[2])) {
197 dbg("PCPROT: Bad DX spot, ignored") if isdbg('chanerr');
202 $pc->[5] =~ s/^\s+//; # take any leading blanks off
203 $pc->[2] = unpad($pc->[2]); # take off leading and trailing blanks from spotted callsign
204 if ($pc->[2] =~ /BUST\w*$/) {
205 dbg("PCPROT: useless 'BUSTED' spot") if isdbg('chanerr');
210 if (@bad = BadWords::check($pc->[5])) {
211 dbg("PCPROT: Bad words: @bad, dropped") if isdbg('chanerr');
217 my @spot = Spot::prepare($pc->[1], $pc->[2], $d, $pc->[5], $nossid, $pc->[7], $pc->[8]);
219 # global spot filtering on INPUT
220 if ($self->{inspotsfilter}) {
221 my ($filter, $hops) = $self->{inspotsfilter}->it(@spot);
223 dbg("PCPROT: Rejected by input spot filter") if isdbg('chanerr');
228 # this is where we decide to delay PC11s in the hope that a PC61 will be along soon.
230 my $key = join '|', @spot[0..2,4,7]; # not including text
234 if ($key eq $pc11_saved->[0]) {
235 dbg("saved PC11 spot $key dumped, better pc61 received") if isdbg("pc11");
242 if ($key eq $pc11_saved->[0]) {
243 dbg("saved PC11 spot $key, dupe pc11 received and dumped") if isdbg("pc11");
244 return; # because it's a dup
248 # can we promote this to a PC61?
249 my $r = Route::User::get($spot[4]); # find spotter
250 if ($r && $r->ip) { # do we have an ip addres
251 $pcno = 61; # now turn this into a PC61
253 dbg("PC11 spot $key promoted to pc61 ip $spot[14]") if isdbg("pc11");
258 if ($pc11_saved && $key ne $pc11_saved) {
259 dbg("saved PC11 spot $pc11_saved->[0] ne new key $key, recursing") if isdbg("pc11");
260 shift @$pc11_saved; # saved key
261 my $self = shift @$pc11_saved;
262 my @saved = @$pc11_saved;
264 $self->handle_11(@saved, 1);
267 # if we are still a PC11, save it for a better offer
269 $pc11_saved = [$key, $self, $pcno, $line, $origin, $pc];
270 $pc11_saved_time = $main::systime;
271 dbg("saved new PC11 spot $key for a better offer") if isdbg("pc11");
274 dbg("PC61 spot $key passed onward") if isdbg("pc11");
279 # this goes after the input filtering, but before the add
280 # so that if it is input filtered, it isn't added to the dup
281 # list. This allows it to come in from a "legitimate" source
282 if (Spot::dup(@spot[0..4,7])) {
283 dbg("PCPROT: Duplicate Spot $pc->[0] $key ignored\n") if isdbg('chanerr') || isdbg('dupespot');
287 # here we verify the spotter is currently connected to the node it says it is one. AKA email sender verify
288 # but without the explicit probe to the node. We are relying on "historical" information, but it very likely
289 # to be current once we have seen the first PC92C from that node.
291 # As for spots generated from non-PC92 nodes, we'll see after about do_pc9x3h20m...
294 my $nroute = Route::Node::get($pc->[7]);
295 my $uroute = Route::Node::get($pc->[6]);
296 my $local = DXChannel::get($pc->[7]);
298 if ($nroute && ($nroute->last_PC92C || ($local && !$local->do_pc9x))) {
300 my $ip = $pcno == 61 ? $pc->[8] : '';
301 # $s .= "User $pc->[6] not logged in, " unless $uroute;
302 $s .= "User $pc->[6] not on node $pc->[7], " unless $nroute->is_user($pc->[6]);
303 # $s .= "Node $pc->[7] at '$ip' not on Node's IP " . $nroute->ip if $ip && $nroute && $nroute->ip && $nroute->ip ne $ip;
305 my $action = $senderverify > 1 ? ", DUMPED" : '';
307 dbg("PCProt: Suspicious Spot $pc->[2] on $pc->[1] by $pc->[6]($ip)\@$pc->[7] $s$action");
308 return unless $senderverify < 2;
313 # If is a new PC11, store it, releasing the one that is there (if any),
314 # if a PC61 comes along then dump the stored PC11
315 # If there is a different PC11 stored, release that one and store this PC11 instead,
321 $ip ||= $spot[14] if exists $spot[14];
322 if (isdbg('progress')) {
323 my $sip = $ip ? sprintf "($ip)" : '' unless $ip =~ m|[\(\)\*]|;
325 my $d = ztime($spot[2]);
326 my $s = "SPOT: $spot[1] on $spot[0] \@ $d by $spot[4]$sip\@$spot[7]";
327 $s .= $spot[3] ? " '$spot[3]'" : q{ ''};
328 $s .= " route: $origin";
333 # @spot at this point contains:-
334 # freq, spotted call, time, text, spotter, spotted cc, spotters cc, orig node
335 # then spotted itu, spotted cq, spotters itu, spotters cq
336 # you should be able to route on any of these
339 # fix up qra locators of known users
340 my $user = DXUser::get_current($spot[4]);
342 my $qra = $user->qra;
343 unless ($qra && is_qra($qra)) {
344 my $lat = $user->lat;
345 my $long = $user->long;
346 if (defined $lat && defined $long) {
347 $user->qra(DXBearing::lltoqra($lat, $long));
352 # send a remote command to a distant cluster if it is visible and there is no
353 # qra locator and we havn't done it for a month.
355 unless ($user->qra) {
357 my $to = $user->homenode;
358 my $last = $user->lastoper || 0;
359 if ($send_opernam && $to && $to ne $main::mycall && $main::systime > $last + $DXUser::lastoperinterval && ($node = Route::Node::get($to)) ) {
360 my $cmd = "forward/opernam $spot[4]";
361 # send the rcmd but we aren't interested in the replies...
362 my $dxchan = $node->dxchan;
363 if ($dxchan && $dxchan->is_clx) {
364 route(undef, $to, pc84($main::mycall, $to, $main::mycall, $cmd));
366 route(undef, $to, pc34($main::mycall, $to, $cmd));
368 if ($to ne $origin) {
370 $node = Route::Node::get($to);
372 $dxchan = $node->dxchan;
373 if ($dxchan && $dxchan->is_clx) {
374 route(undef, $to, pc84($main::mycall, $to, $main::mycall, $cmd));
376 route(undef, $to, pc34($main::mycall, $to, $cmd));
380 $user->lastoper($main::systime);
387 if (defined &Local::spot) {
390 $r = Local::spot($self, @spot);
395 # DON'T be silly and send on PC26s!
396 return if $pcno == 26;
398 # send out the filtered spots
399 send_dx_spot($self, $line, @spot) if @spot;
402 # used to kick outstanding PC11 if required
405 if ($pc11_saved && $main::systime > $pc11_saved_time) {
406 dbg("saved PC11 spot $pc11_saved->[0] timed out waiting, recursing") if isdbg("pc11");
407 shift @$pc11_saved; # saved key
408 my $self = shift @$pc11_saved;
409 my @saved = @$pc11_saved;
411 $self->handle_11(@saved, 1);
424 # announce duplicate checking
425 $pc->[3] =~ s/^\s+//; # remove leading blanks
429 if (@bad = BadWords::check($pc->[3])) {
430 dbg("PCPROT: Bad words: @bad, dropped") if isdbg('chanerr');
435 # if this is a 'nodx' node then ignore it
436 if ($badnode->in($pc->[5])) {
437 dbg("PCPROT: Bad Node, dropped") if isdbg('chanerr');
441 # if this is a 'bad spotter' user then ignore it
442 my $nossid = $pc->[1];
443 $nossid =~ s/-\d+$//;
444 if ($badspotter->in($nossid)) {
445 dbg("PCPROT: Bad Spotter, dropped") if isdbg('chanerr');
449 # ignore PC12s from origins that use PCxx protocol
450 my $oref = Route::get($origin);
451 if ($oref->do_pc9x) {
452 dbg("PCPROT: PC12 rxed from PC9x node, ignored") if isdbg('chanerr');
458 if ((($dxchan = DXChannel::get($pc->[2])) && $dxchan->is_user) || $pc->[4] =~ /^[\#\w.]+$/){
459 $self->send_chat(0, $line, @$pc[1..6]);
460 } elsif ($pc->[2] eq '*' || $pc->[2] eq $main::mycall) {
462 # ignore something that looks like a chat line coming in with sysop
463 # flag - this is a kludge...
464 if ($pc->[3] =~ /^\#\d+ / && $pc->[4] eq '*') {
465 dbg('PCPROT: Probable chat rewrite, dropped') if isdbg('chanerr');
469 # here's a bit of fun, convert incoming ann with a callsign in the first word
470 # or one saying 'to <call>' to a talk if we can route to the recipient
472 my $call = AnnTalk::is_talk_candidate($pc->[1], $pc->[3]);
474 my $ref = Route::get($call);
476 $dxchan = $ref->dxchan;
477 $dxchan->talk($pc->[1], $call, undef, $pc->[3], $pc->[5]) if $dxchan != $self;
484 $self->send_announce(0, $line, @$pc[1..6]);
486 $self->route($pc->[2], $line);
490 if (defined &Local::ann) {
493 $r = Local::ann($self, $line, @$pc[1..6]);
507 if (eph_dup($line, $eph_pc15_restime)) {
510 unless ($self->{isolate}) {
511 DXChannel::broadcast_nodes($line, $self) if $line =~ /\^H\d+\^?~?$/; # send it to everyone but me
527 my $ncall = $pc->[1];
528 my $newline = "PC16^";
530 # dos I want users from this channel?
531 unless ($self->user->wantpc16) {
532 dbg("PCPROT: don't send users to $self->{call}") if isdbg('chanerr');
537 if ($ncall eq $main::mycall) {
538 dbg("PCPROT: trying to alter config on this node from outside!") if isdbg('chanerr');
543 $h = 1 if DXChannel::get($ncall);
544 if ($h && $self->{call} ne $ncall) {
545 dbg("PCPROT: trying to update a local node, ignored") if isdbg('chanerr');
549 if (eph_dup($line)) {
553 # isolate now means only accept stuff from this call only
554 if ($self->{isolate} && $ncall ne $self->{call}) {
555 dbg("PCPROT: $self->{call} isolated, $ncall ignored") if isdbg('chanerr');
559 my $parent = Route::Node::get($ncall);
562 $dxchan = $parent->dxchan;
563 if ($dxchan && $dxchan ne $self) {
564 dbg("PCPROT: PC16 from $self->{call} trying to alter locally connected $ncall, ignored!") if isdbg('chanerr');
568 # input filter if required
569 return unless $self->in_filter_route($parent);
571 $parent = Route::Node->new($ncall);
575 if ($parent->via_pc92) {
576 dbg("PCPROT: non-local node controlled by PC92, ignored") if isdbg('chanerr');
583 for ($i = 2; $i < $#$pc; $i++) {
584 my ($call, $conf, $here) = $pc->[$i] =~ /^(\S+) (\S) (\d)/o;
585 next unless $call && $conf && defined $here && is_callsign($call);
586 next if $call eq $main::mycall;
588 eph_del_regex("^PC17\\^$call\\^$ncall");
590 $conf = $conf eq '*';
592 # reject this if we think it is a node already
593 my $r = Route::Node::get($call);
594 my $u = DXUser::get_current($call) unless $r;
595 if ($r || ($u && $u->is_node)) {
596 dbg("PCPROT: $call is a node") if isdbg('chanerr');
600 $r = Route::User::get($call);
601 my $flags = Route::here($here)|Route::conf($conf);
604 my $au = $r->addparent($parent);
605 if ($r->flags != $flags) {
609 push @rout, $r if $h && $au;
611 my @ans = $parent->add_user($call, $flags);
612 push @rout, @ans if $h && @ans;
615 # add this station to the user database, if required
616 my $user = DXUser::get_current($ncall);
617 $user = DXUser->new($call) unless $user;
618 $user->homenode($parent->call) if !$user->homenode;
619 $user->node($parent->call);
620 $user->lastin($main::systime) unless DXChannel::get($call);
623 # send info to all logged in thingies
624 $self->tell_login('loginu', "$ncall: $call") if $user->is_local_node;
625 $self->tell_buddies('loginb', $call, $ncall);
628 $self->route_pc16($origin, $line, $parent, @rout) if @rout;
629 # $self->route_pc92a($main::mycall, undef, $parent, @rout) if $h && $self->{state} eq 'normal';
643 my $ncall = $pc->[2];
644 my $ucall = $pc->[1];
646 eph_del_regex("^PC16\\^$ncall.*$ucall");
648 # do I want users from this channel?
649 unless ($self->user->wantpc16) {
650 dbg("PCPROT: don't send users to $self->{call}") if isdbg('chanerr');
654 if ($ncall eq $main::mycall) {
655 dbg("PCPROT: trying to alter config on this node from outside!") if isdbg('chanerr');
659 # isolate now means only accept stuff from this call only
660 if ($self->{isolate} && $ncall ne $self->{call}) {
661 dbg("PCPROT: $self->{call} isolated, $ncall ignored") if isdbg('chanerr');
665 my $uref = Route::User::get($ucall);
667 dbg("PCPROT: Route::User $ucall not in config") if isdbg('chanerr');
670 my $parent = Route::Node::get($ncall);
672 dbg("PCPROT: Route::Node $ncall not in config") if isdbg('chanerr');
676 $dxchan = DXChannel::get($ncall);
677 if ($dxchan && $dxchan ne $self) {
678 dbg("PCPROT: PC17 from $self->{call} trying to alter locally connected $ncall, ignored!") if isdbg('chanerr');
683 if ($parent->via_pc92) {
684 dbg("PCPROT: non-local node controlled by PC92, ignored") if isdbg('chanerr');
689 if (DXChannel::get($ucall)) {
690 dbg("PCPROT: trying do disconnect local user, ignored") if isdbg('chanerr');
694 # input filter if required and then remove user if present
695 # return unless $self->in_filter_route($parent);
696 $parent->del_user($uref);
698 # send info to all logged in thingies
699 my $user = DXUser::get_current($ncall);
700 $self->tell_login('logoutu', "$ncall: $ucall") if $user && $user->is_local_node;
701 $self->tell_buddies('logoutb', $ucall, $ncall);
703 if (eph_dup($line)) {
707 $self->route_pc17($origin, $line, $parent, $uref);
708 # $self->route_pc92d($main::mycall, undef, $parent, $uref) if $dxchan;
720 $self->state('init');
722 my $parent = Route::Node::get($self->{call});
724 # record the type and version offered
725 if (my ($version) = $pc->[1] =~ /DXSpider Version: (\d+\.\d+)/) {
726 $self->{version} = 53 + $version;
727 $self->user->version(53 + $version);
728 $parent->version(0 + $version);
729 my ($build) = $pc->[1] =~ /Build: (\d+(?:\.\d+)?)/;
730 $self->{build} = 0 + $build;
731 $self->user->build(0 + $build);
732 $parent->build(0 + $build);
733 dbg("$self->{call} = DXSpider version $version build $build");
734 unless ($self->is_spider) {
735 dbg("Change U " . $self->user->sort . " C $self->{sort} -> S");
736 $self->user->sort('S');
740 # $self->{handle_xml}++ if DXXml::available() && $pc->[1] =~ /\bxml/;
742 dbg("$self->{call} = Unknown software ($pc->[1] $pc->[2])");
743 $self->version(50.0);
744 $self->version($pc->[2] / 100) if $pc->[2] && $pc->[2] =~ /^\d+$/;
745 $self->user->version($self->version);
748 if ($pc->[1] =~ /\bpc9x/) {
749 if ($self->{isolate}) {
750 dbg("$self->{call} pc9x recognised, but node is isolated, using old protocol");
751 } elsif (!$self->user->wantpc9x) {
752 dbg("$self->{call} pc9x explicitly switched off, using old protocol");
754 $self->{do_pc9x} = 1;
755 dbg("$self->{call} Set do PC9x");
759 # first clear out any nodes on this dxchannel
760 my @rout = $parent->del_nodes;
761 $self->route_pc21($origin, $line, @rout, $parent) if @rout;
762 $self->send_local_config();
770 my $homenode = shift;
772 # add this station to the user database, if required (don't remove SSID from nodes)
773 my $user = DXUser::get_current($call);
775 $user = DXUser->new($call);
776 $user->sort($type || 'U');
777 if ($user->is_node) {
778 $user->priv(1); # I have relented and defaulted nodes
779 $user->lockout(1) if $user->is_node;
781 $user->homenode($homenode) if $homenode;
782 $user->node($homenode);
784 $user->lastin($main::systime); # this make it last longer than just this invocation
785 $user->put; # just to make sure it gets written away!!!
786 dbg("DXProt: PC92 new user record for $call created");
791 # incoming cluster list
801 my $newline = "PC19^";
804 my (@rout, @pc92out);
806 # first get the INTERFACE node
807 my $parent = Route::Node::get($self->{call});
809 dbg("PCPROT: my parent $self->{call} has disappeared");
818 # We are making a major change from now on. We are only going to accept
819 # PC19s from directly connected nodes. This means that we are probably
820 # going to throw away most of the data that we are being sent.
822 # The justification for this is that most of it is wrong or out of date
825 # From now on we are only going to believe PC92 data and locally connected
828 for ($i = 1; $i < $#$pc-1; $i += 4) {
829 my $here = $pc->[$i];
830 my $call = uc $pc->[$i+1];
831 my $conf = $pc->[$i+2];
832 my $ver = $pc->[$i+3];
833 next unless defined $here && defined $conf && is_callsign($call);
835 eph_del_regex("^PC(?:21\\^$call|17\\^[^\\^]+\\^$call)");
837 # check for sane parameters
838 # $ver = 5000 if $ver eq '0000';
839 next unless $ver && $ver =~ /^\d+$/;
840 next if $ver < 5000; # only works with version 5 software
841 next if length $call < 3; # min 3 letter callsigns
842 next if $call eq $main::mycall || $call eq $main::myalias;
844 # check that this PC19 isn't trying to alter the wrong dxchan
846 my $dxchan = DXChannel::get($call);
848 if ($dxchan == $self) {
851 dbg("PCPROT: PC19 from $self->{call} trying to alter wrong locally connected $call, ignored!") if isdbg('chanerr');
856 # isolate now means only accept stuff from this call only
857 if ($self->{isolate} && $call ne $self->{call}) {
858 dbg("PCPROT: $self->{call} isolated, $call ignored") if isdbg('chanerr');
862 my $user = check_add_user($call, 'A');
864 # if (eph_dup($genline)) {
865 # dbg("PCPROT: dup PC19 for $call detected") if isdbg('chanerr');
871 if ($parent->via_pc92) {
872 dbg("PCPROT: non-local node controlled by PC92, ignored") if isdbg('chanerr');
877 my $r = Route::Node::get($call);
878 my $flags = Route::here($here)|Route::conf($conf);
880 # modify the routing table if it is in it, otherwise store it in the pc19list for now
883 if ($call ne $parent->call) {
884 if ($self->in_filter_route($r)) {
885 $ar = $parent->add($call, $ver, $flags);
886 # push @rout, $ar if $ar;
891 if ($r->version ne $ver || $r->flags != $flags) {
897 if ($call eq $self->{call} || $user->wantroutepc19) {
898 my $new = Route->new($call); # throw away
899 if ($self->in_filter_route($new)) {
900 my $ar = $parent->add($call, $ver, $flags);
901 $user->wantroutepc19(1) unless defined $user->wantroutepc19;
902 push @rout, $ar if $ar;
903 push @pc92out, $r if $h;
910 # unbusy and stop and outgoing mail (ie if somehow we receive another PC19 without a disconnect)
911 my $mref = DXMsg::get_busy($call);
912 $mref->stop_msg($call) if $mref;
914 $user->lastin($main::systime) unless DXChannel::get($call);
918 # we are not automatically sending out PC19s, we send out a composite PC21,PC19 instead
919 # but remember there will only be one (pair) these because any extras will be
922 # $self->route_pc21($self->{call}, $line, @rout);
923 $self->route_pc19($self->{call}, $line, @rout);
925 if (@pc92out && !$pc92_slug_changes) {
926 $self->route_pc92a($main::mycall, $line, $main::routeroot, @pc92out) if $self->{state} eq 'normal';
930 # send local configuration
939 if ($self->{do_pc9x} && $self->{state} ne 'init92') {
940 $self->send("Reseting to oldstyle routing because login call not sent in any pc92");
941 $self->{do_pc9x} = 0;
943 $self->send_local_config;
945 $self->state('normal');
946 $self->{lastping} = 0;
947 $self->route_pc92a($main::mycall, undef, $main::routeroot, Route::Node::get($self->{call}));
950 # delete a cluster from the list
952 # This should never occur for directly connected nodes.
962 my $call = uc $pc->[1];
964 eph_del_regex("^PC1[679].*$call");
966 # if I get a PC21 from the same callsign as self then ignore it
967 if ($call eq $self->{call}) {
968 dbg("PCPROT: self referencing PC21 from $self->{call}");
972 # for the above reason and also because of the check for PC21s coming
973 # in for self->call from outside being ignored further down
974 # we don't need any isolation code here, because we will never
975 # act on a PC21 with self->call in it.
977 my $parent = Route::Node::get($self->{call});
979 dbg("PCPROT: my parent $self->{call} has disappeared");
986 if ($call ne $main::mycall && $call ne $main::myalias) { # don't allow malicious buggers to disconnect me!
987 my $node = Route::Node::get($call);
990 if ($node->via_pc92) {
991 dbg("PCPROT: controlled by PC92, ignored") if isdbg('chanerr');
995 my $dxchan = DXChannel::get($call);
996 if ($dxchan && $dxchan != $self) {
997 dbg("PCPROT: PC21 from $self->{call} trying to alter locally connected $call, ignored!") if isdbg('chan');
1002 return unless $self->in_filter_route($node);
1004 # routing objects, force a PC21 if it is local
1005 push @rout, $node->del($parent);
1006 push @rout, $call if $dxchan && @rout == 0;
1009 dbg("PCPROT: I WILL _NOT_ be disconnected!") if isdbg('chan');
1013 if (eph_dup($line)) {
1018 $self->route_pc21($origin, $line, @rout);
1019 # $self->route_pc92d($main::mycall, $line, $main::routeroot, @rout);
1032 if ($self->{do_pc9x}) {
1033 if ($self->{state} ne 'init92') {
1034 $self->send("Reseting to oldstyle routing because login call not sent in any pc92");
1035 $self->{do_pc9x} = 0;
1038 $self->{lastping} = 0;
1039 $self->state('normal');
1040 $self->route_pc92a($main::mycall, undef, $main::routeroot, Route::Node::get($self->{call}));
1052 # route foreign' pc27s
1054 if ($pc->[8] ne $main::mycall) {
1055 $self->route($pc->[8], $line);
1062 my $d = cltounix($pc->[1], sprintf("%02d18Z", $pc->[2]));
1063 my $sfi = unpad($pc->[3]);
1064 my $k = unpad($pc->[4]);
1065 my $i = unpad($pc->[5]);
1066 my ($r) = $pc->[6] =~ /R=(\d+)/;
1068 if (($pcno == 23 && $d < $main::systime - $pc23_max_age) || $d > $main::systime + 1500 || $pc->[2] < 0 || $pc->[2] > 23) {
1069 dbg("PCPROT: WWV Date ($pc->[1] $pc->[2]) out of range") if isdbg('chanerr');
1073 # global wwv filtering on INPUT
1074 my @dxcc = ((Prefix::cty_data($pc->[7]))[0..2], (Prefix::cty_data($pc->[8]))[0..2]);
1075 if ($self->{inwwvfilter}) {
1076 my ($filter, $hops) = $self->{inwwvfilter}->it(@$pc[7,8], $origin, @dxcc);
1078 dbg("PCPROT: Rejected by input wwv filter") if isdbg('chanerr');
1082 $pc->[7] =~ s/-\d+$//o; # remove spotter's ssid
1083 if (Geomag::dup($d,$sfi,$k,$i,$pc->[6],$pc->[7])) {
1084 dbg("PCPROT: Dup WWV Spot ignored\n") if isdbg('chanerr');
1088 # note this only takes the first one it gets
1089 Geomag::update($d, $pc->[2], $sfi, $k, $i, @$pc[6..8], $r);
1090 dbg("WWV: <$pc->[2]>, sfi=$sfi k=$k info=$i '$pc->[6]' $pc->[7]\@$pc->[8] $r route: $origin") if isdbg('progress');
1092 if (defined &Local::wwv) {
1095 $rep = Local::wwv($self, $pc->[1], $pc->[2], $sfi, $k, $i, @$pc[6..8], $r);
1100 # DON'T be silly and send on PC27s!
1101 return if $pcno == 27;
1103 # broadcast to the eager world
1104 send_wwv_spot($self, $line, $d, $pc->[2], $sfi, $k, $i, @$pc[6..8]);
1116 my $call = uc $pc->[1];
1118 $nref = Route::Node::get($call);
1119 $uref = Route::User::get($call);
1120 return unless $nref || $uref; # if we don't know where they are, it's pointless sending it on
1122 if (eph_dup($line)) {
1126 $nref->here($pc->[2]) if $nref;
1127 $uref->here($pc->[2]) if $uref;
1128 my $ref = $nref || $uref;
1129 return unless $self->in_filter_route($ref);
1131 $self->route_pc24($origin, $line, $ref, $pc->[3]);
1143 if ($pc->[1] ne $main::mycall) {
1144 $self->route($pc->[1], $line);
1147 if ($pc->[2] eq $main::mycall) {
1148 dbg("PCPROT: Trying to merge to myself, ignored") if isdbg('chan');
1152 Log('DXProt', "Merge request for $pc->[3] spots and $pc->[4] WWV from $pc->[2]");
1156 my @in = reverse Spot::search(1, undef, undef, 0, $pc->[3]);
1159 $self->send(pc26(@{$in}[0..4], $pc->[2]));
1165 my @in = reverse Geomag::search(0, $pc->[4], time, 1);
1168 $self->send(pc27(@{$in}[0..5], $pc->[2]));
1173 sub handle_26 {goto &handle_11}
1174 sub handle_27 {goto &handle_23}
1176 # mail/file handling
1185 if ($pc->[1] eq $main::mycall) {
1187 my $sub = "DXMsg::handle_$pcno";
1190 $self->route($pc->[1], $line) unless $self->is_clx;
1194 sub handle_29 {goto &handle_28}
1195 sub handle_30 {goto &handle_28}
1196 sub handle_31 {goto &handle_28}
1197 sub handle_32 {goto &handle_28}
1198 sub handle_33 {goto &handle_28}
1208 if (eph_dup($line, $eph_pc34_restime)) {
1211 $self->process_rcmd($pc->[1], $pc->[2], $pc->[2], $pc->[3]);
1215 # remote command replies
1224 eph_del_regex("^PC35\\^$pc->[2]\\^$pc->[1]\\^");
1225 $self->process_rcmd_reply($pc->[1], $pc->[2], $pc->[1], $pc->[3]);
1228 sub handle_36 {goto &handle_34}
1239 if ($pc->[1] eq $main::mycall) {
1241 my $sub = "DXDb::handle_$pcno";
1244 $self->route($pc->[1], $line) unless $self->is_clx;
1248 # node connected list from neighbour
1258 # incoming disconnect
1267 if ($pc->[1] eq $self->{call}) {
1268 $self->disconnect(1);
1270 dbg("PCPROT: came in on wrong channel") if isdbg('chanerr');
1274 sub handle_40 {goto &handle_28}
1285 my $call = $pc->[1];
1286 my $sort = $pc->[2];
1289 my $l = "PC41^$call^$sort";
1290 if (eph_dup($l, $eph_info_restime)) {
1294 # input filter if required
1295 # my $ref = Route::get($call) || Route->new($call);
1296 # return unless $self->in_filter_route($ref);
1298 if ($val eq $sort || $val =~ /^\s*$/) {
1299 dbg('PCPROT: invalid value') if isdbg('chanerr');
1303 if ($call eq $main::mycall || $call eq $main::myalias) {
1304 dbg "DXPROT: PC41 trying to update $call from outside via $origin, ignored";
1307 my $chan = DXChannel::get($call);
1309 dbg "DXPROT: PC41 trying to update online $call from outside via $origin, ignored";
1313 # add this station to the user database, if required
1314 my $user = DXUser::get_current($call);
1315 $user = DXUser->new($call) unless $user;
1318 if (($val =~ /spotter/i || $val =~ /self/i) && $user->name && $user->name ne $val) {
1319 dbg("PCPROT: invalid name") if isdbg('chanerr');
1323 } elsif ($sort == 2) {
1325 } elsif ($sort == 3) {
1326 if (is_latlong($val)) {
1327 my ($lat, $long) = DXBearing::stoll($val);
1328 $user->lat($lat) if $lat;
1329 $user->long($long) if $long;
1330 $user->qra(DXBearing::lltoqra($lat, $long)) unless $user->qra;
1332 dbg('PCPROT: not a valid lat/long') if isdbg('chanerr');
1335 } elsif ($sort == 4) {
1336 $user->homenode($val);
1337 } elsif ($sort == 5) {
1338 if (is_qra(uc $val)) {
1339 my ($lat, $long) = DXBearing::qratoll(uc $val);
1340 $user->lat($lat) if $lat && !$user->lat;
1341 $user->long($long) if $long && !$user->long;
1342 $user->qra(uc $val);
1344 dbg('PCPROT: not a valid QRA locator') if isdbg('chanerr');
1348 $user->lastoper($main::systime); # to cut down on excessive for/opers being generated
1351 unless ($self->{isolate}) {
1352 DXChannel::broadcast_nodes($line, $self); # send it to everyone but me
1355 # perhaps this IS what we want after all
1356 # $self->route_pc41($ref, $call, $sort, $val, $pc->[4]);
1359 sub handle_42 {goto &handle_28}
1363 sub handle_44 {goto &handle_37}
1364 sub handle_45 {goto &handle_37}
1365 sub handle_46 {goto &handle_37}
1366 sub handle_47 {goto &handle_37}
1367 sub handle_48 {goto &handle_37}
1369 # message and database
1378 if (eph_dup($line)) {
1382 if ($pc->[1] eq $main::mycall) {
1383 DXMsg::handle_49($self, @$pc);
1385 $self->route($pc->[1], $line) unless $self->is_clx;
1389 # keep alive/user list
1398 return if (eph_dup($line));
1400 my $call = $pc->[1];
1402 my $node = Route::Node::get($call);
1404 return unless $node->call eq $self->{call};
1405 $node->usercount($pc->[2]) unless $node->users;
1407 $node->PC92C_dxchan($self->call, $pc->[-1]);
1409 # input filter if required
1410 # return unless $self->in_filter_route($node);
1412 unless ($self->{isolate}) {
1413 DXChannel::broadcast_nodes($line, $self); # send it to everyone but me
1415 # $self->route_pc50($origin, $line, $node, $pc->[2], $pc->[3]) unless eph_dup($line);
1419 # incoming ping requests/answers
1429 my $from = $pc->[2];
1430 my $flag = $pc->[3];
1432 if ($to eq $main::myalias) {
1433 dbg("DXPROT: Ping addressed to \$myalias ($main::myalias), ignored") if isdbg('chan');
1438 if ($to eq $main::mycall) {
1440 $self->send(pc51($from, $to, '0'));
1442 DXXml::Ping::handle_ping_reply($self, $from);
1445 if (eph_dup($line)) {
1448 # route down an appropriate thingy
1449 $self->route($to, $line);
1453 sub handle_61 { goto &handle_11; }
1455 # dunno but route it
1464 my $call = $pc->[1];
1465 if ($call ne $main::mycall) {
1466 $self->route($call, $line);
1479 my $call = $pc->[1];
1482 my $d = cltounix($call, sprintf("%02d18Z", $pc->[2]));
1483 if (($pcno == 23 && $d < $main::systime - $pc23_max_age) || $d > $main::systime + 1500 || $pc->[2] < 0 || $pc->[2] > 23) {
1484 dbg("PCPROT: WCY Date ($call $pc->[2]) out of range") if isdbg('chanerr');
1487 $pc = [ map { unpad($_) } @$pc ];
1489 dbg("PCPROT: Dup WCY Spot ignored\n") if isdbg('chanerr');
1493 my $wcy = WCY::update($d, @$pc[2..12]);
1494 dbg("WCY: <$pc->[2]> K=$pc->[5] expK=$pc->[6] A=$pc->[4] R=$pc->[7] SFI=$pc->[3] SA=$pc->[8] GMF=$pc->[9] Au=$pc->[10] $pc->[11]\@$pc->[12] route: $origin") if isdbg('progress');
1496 if (defined &Local::wcy) {
1499 $rep = Local::wcy($self, @$pc[1..12]);
1504 # broadcast to the eager world
1505 send_wcy_spot($self, $line, $d, @$pc[2..12]);
1508 # remote commands (incoming)
1517 $self->process_rcmd($pc->[1], $pc->[2], $pc->[3], $pc->[4]);
1520 # remote command replies
1529 $self->process_rcmd_reply($pc->[1], $pc->[2], $pc->[3], $pc->[4]);
1532 # decode a pc92 call: flag call : version : build
1533 sub _decode_pc92_call
1536 my @part = split /:/, $icall;
1537 my ($flag, $call) = unpack "A A*", $part[0];
1538 unless (defined $flag && $flag ge '0' && $flag le '7') {
1539 dbg("PCPROT: $icall no flag byte (0-7) at front of call, ignored") if isdbg('chanerr');
1542 unless ($call && is_callsign($call)) {
1543 dbg("PCPROT: $icall no recognisable callsign, ignored") if isdbg('chanerr');
1546 my $is_node = $flag & 4;
1547 my $is_extnode = $flag & 2;
1548 my $here = $flag & 1;
1550 $ip ||= $part[1] if $part[1] && $part[1] !~ /^\d+$/ && ($part[1] =~ /^(?:\d+\.)+/ || $part[1] =~ /^(?:(?:[abcdef\d]+)?,)+/);
1551 $ip =~ s/,/:/g if $ip;
1552 return ($call, $is_node, $is_extnode, $here, $part[1], $part[2], $ip);
1555 # decode a pc92 call: flag call : version : build
1556 sub _encode_pc92_call
1560 # plain call or value
1561 return $ref unless ref $ref;
1563 my $ext = shift || 0;
1565 my $call = $ref->call;
1567 $flag |= $ref->here ? 1 : 0;
1568 if ($ref->isa('Route::Node') || $ref->isa('DXProt')) {
1570 my $dxchan = DXChannel::get($call);
1571 $flag |= 2 if $call ne $main::mycall && $dxchan && !$dxchan->{do_pc9x};
1572 if (($ext & 1) && $ref->version) {
1573 my $version = $ref->version || 1.0;
1574 $version = $version * 100 + 5300 if $version < 50;
1575 $extra .= ":" . $version;
1578 if (($ext & 2) && $ref->ip) {
1581 $extra .= ':' . $ip;
1583 return "$flag$call$extra";
1596 my ($call, $is_node, $is_extnode, $here, $version, $build, $ip) = @$s;
1599 # remove spurious IPV6 prefix on IPV4 addresses
1600 $ip =~ s/^::ffff:// if $ip;
1603 my $ncall = $parent->call;
1604 if ($ncall ne $call) {
1609 dbg("ROUTE: added node $call to $ncall") if isdbg('routelow');
1610 $user = check_add_user($call, 'A');
1611 @rout = $parent->add($call, $version, Route::here($here), $ip);
1612 $r = Route::Node::get($call);
1613 $r->PC92C_dxchan($dxchan->call, $hops) if $r;
1615 my $old = $user->sort;
1616 if ($version >= 5455 && defined $build && $build > 0 || $version >= 3000 ) {
1618 dbg("PCProt::_add_thingy node $call sort ($old) updated to " . $user->sort) if isdbg('route');
1622 dbg("ROUTE: added user $call to $ncall") if isdbg('routelow');
1623 $user = check_add_user($call, 'U', $parent->call);
1624 @rout = $parent->add_user($call, Route::here($here), $ip);
1625 $dxchan->tell_buddies('loginb', $call, $ncall) if $dxchan;
1626 $r = Route::User::get($call);
1630 Log('DXProt', "PC92A $call -> $ip on $ncall");
1632 if ($pc92_slug_changes && $parent == $main::routeroot) {
1633 $things_add{$call} = Route::get($call);
1634 delete $things_del{$call};
1636 $user->close($main::systime, $ip) if $user; # this just updates lastseen and the connlist list containing the IP address
1638 dbgprintring(10) if isdbg('nologchan');
1639 dbg("DXProt::add_thingy: Trying to add parent $call to itself $ncall, ignored");
1651 my ($call, $is_node, $is_extnode, $here, $version, $build) = @$s;
1656 $ref = Route::Node::get($call);
1657 dbg("ROUTE: deleting node $call from " . $parent->call) if isdbg('routelow');
1658 @rout = $ref->del($parent) if $ref;
1660 dbg("ROUTE: deleting user $call from " . $parent->call) if isdbg('routelow');
1661 $ref = Route::User::get($call);
1663 $dxchan->tell_buddies('logoutb', $call, $parent->call) if $dxchan;
1664 @rout = $parent->del_user($ref);
1667 if ($pc92_slug_changes && $parent == $main::routeroot) {
1668 $things_del{$call} = $ref unless exists $things_add{$call};
1669 delete $things_add{$call};
1675 # this will only happen if we are slugging changes and
1676 # there are some changes to be sent, it will create an add or a delete
1678 sub gen_pc92_changes
1680 my @add = values %things_add;
1681 my @del = values %things_del;
1682 return (\@add, \@del);
1685 sub clear_pc92_changes
1687 %things_add = %things_del = ();
1688 $last_pc92_slug = $main::systime;
1697 return $_last_pc9x_id;
1702 if (!$_last_time || $_last_time != $main::systime) {
1703 $_last_time = $main::systime;
1705 return $_last_pc9x_id = $_last_time - $main::systime_daystart;
1708 return $_last_pc9x_id = sprintf "%d.%02d", $_last_time - $main::systime_daystart, $_last_occurs;
1719 # check that the time is between 0 >= $t < 86400
1720 unless ($t >= 0 && $t < 86400) {
1721 dbg("PCPROT: time invalid t: $t, ignored") if isdbg('chanerr');
1725 # check that the time of this pc9x is within tolerance (default 15 mins either way)
1726 my $now = $main::systime - $main::systime_daystart ;
1727 my $diff = abs($now - $t);
1728 unless ($diff < $pc9x_time_tolerance || 86400 - $diff < $pc9x_time_tolerance) {
1729 my $c = ref $call ? $call->call : $call;
1730 dbg("PC9XERR: $c time out of range t: $t now: $now diff: $diff > $pc9x_time_tolerance, ignored") if isdbg('chan');
1734 my $parent = ref $call ? $call : Route::Node::get($call);
1736 # we only do this for external calls whose routing table
1737 # record come and go. The reference for mycall is permanent
1738 # and not that frequently used, it also never times out, so
1739 # the id on it is completely unreliable. Besides, only commands
1740 # originating on this box will go through this code...
1741 if ($parent->call ne $main::mycall) {
1742 my $lastid = $parent->lastid;
1743 if (defined $lastid) {
1745 # note that this is where we determine whether this pc9x has come in yesterday
1746 # but is still greater (modulo 86400) than the lastid or is simply an old
1747 # duplicate sentence. To determine this we need to do some module 86400
1748 # arithmetic. High numbers mean that this is an old duplicate sentence,
1749 # low numbers that it is a new sentence.
1751 # Typically you will see yesterday being taken on $t = 84, $lastid = 86235
1752 # and old dupes with $t = 234, $lastid = 256 (which give answers 249 and
1753 # 86378 respectively in the calculation below).
1755 if ($t+86400-$lastid > $pc9x_past_age) {
1756 dbg("PCPROT: dup id on $t <= lastid $lastid, ignored") if isdbg('chanerr') || isdbg('pc92dedupe');
1759 } elsif ($t == $lastid) {
1760 dbg("PCPROT: dup id on $t == lastid $lastid, ignored") if isdbg('chanerr') || isdbg('pc92dedupe');
1763 # check that if we have a low number in lastid that yesterday's numbers
1764 # (likely in the 85000+ area) don't override them, thus causing flip flopping
1765 if ($lastid+86400-$t < $pc9x_past_age) {
1766 dbg("PCPROT: dup id on $t in yesterday, lastid $lastid, ignored") if isdbg('chanerr') || isdbg('pc92dedupe');
1773 $parent = Route::Node->new($call);
1775 dbg("PCPROT: $call does not exist, ignored") if isdbg('pc92dedupe');
1778 if (isdbg('pc92dedupe')) {
1779 my $exists = exists $parent->{lastid}; # naughty, naughty :-)
1780 my $val = $parent->{lastid};
1781 my $s = $exists ? (defined $val ? $val : 'exists/undef') : 'undef';
1782 dbg("PCPROT: $call pc92 id lastid $s -> $t");
1784 $parent->lastid($t);
1789 sub pc92_handle_first_slot
1796 my $oparent = $parent;
1800 my ($call, $is_node, $is_extnode, $here, $version, $build) = @$slot;
1801 if ($call && $is_node) {
1802 if ($call eq $main::mycall) {
1803 LogDbg('err', "PCPROT: $self->{call} : $call looped back onto \$main::mycall ($main::mycall), ignored");
1806 if ($call eq $main::myalias) {
1807 LogDbg('err', "PCPROT: $self->{call} : $call looped back onto \$main::myalias ($main::myalias), ignored");
1810 # this is only accepted from my "self".
1811 # this also kills configs from PC92 nodes with external PC19 nodes that are also
1812 # locally connected. Local nodes always take precedence. But we remember the lastid
1813 # to try to reduce the number of dupe PC92s for this external node.
1814 if (DXChannel::get($call) && $call ne $self->{call}) {
1815 $parent = check_pc9x_t($call, $t, 92); # this will update the lastid time
1816 dbg("PCPROT: locally connected node $call from other another node $self->{call}, ignored") if isdbg('chanerr');
1820 # reparent to external node (note that we must have received a 'C' or 'A' record
1821 # from the true parent node for this external before we get one for the this node
1822 unless ($parent = Route::Node::get($call)) {
1823 if ($is_extnode && $oparent) {
1824 @radd = _add_thingy($oparent, $slot, $self, $hops);
1827 dbg("PCPROT: no previous C or A for this external node received, ignored") if isdbg('chanerr');
1831 $parent = check_pc9x_t($call, $t, 92) || return;
1832 $parent->via_pc92(1);
1833 $parent->PC92C_dxchan($self->{call}, $hops);
1836 dbg("PCPROT: must be \$mycall or external node as first entry, ignored") if isdbg('chanerr');
1839 $parent->here(Route::here($here));
1840 $parent->version($version || $pc19_version) if $version;
1841 $parent->build($build) if $build;
1842 $parent->PC92C_dxchan($self->{call}, $hops) unless $self->{call} eq $parent->call;
1843 return ($parent, @radd);
1846 # DXSpider routing entries
1857 my $pcall = $pc->[1];
1859 my $sort = $pc->[3];
1860 my $hops = $pc->[-1];
1862 # this catches loops of A/Ds
1863 # if (eph_dup($line, $pc9x_dupe_age)) {
1867 if ($pcall eq $main::mycall) {
1868 LogDbg('err', "PCPROT: looped back, ignored");
1872 if ($pcall eq $main::myalias) {
1873 LogDbg('err', "PCPROT: looped back to \$myalias ($main::myalias), misconfiguration ignored");
1877 if ($pcall eq $self->{call} && $self->{state} eq 'init') {
1878 if ($self->{isolate}) {
1879 dbg("DXPROT: PC9x received, but $pcall is isolated, ignored");
1881 } elsif (!$self->user->wantpc9x) {
1882 dbg("DXPROT: PC9x explicitly switched off on $pcall, ignored");
1885 $self->state('init92');
1886 $self->{do_pc9x} = 1;
1887 dbg("DXPROT: Do pc9x set on $pcall");
1890 unless ($self->{do_pc9x}) {
1891 dbg("PCPROT: PC9x come in from non-PC9x node, ignored") if isdbg('chanerr');
1895 # don't create routing entries for D records that don't already exist
1896 # this is what causes all those PC92 loops!
1897 my $parent = check_pc9x_t($pcall, $t, 92, $sort ne 'D') || return;
1898 my $oparent = $parent;
1900 $parent->do_pc9x(1);
1901 $parent->via_pc92(1);
1903 if ($sort eq 'F' || $sort eq 'R') {
1905 # this is the route finding section
1906 # here is where the consequences of the 'find' command
1909 my $from = $pc->[4];
1910 my $target = $pc->[5];
1916 if ($ref = DXChannel::get($target)) {
1917 $flag = 1; # we are directly connected
1919 $ref = Route::get($target);
1920 $dxchan = $ref->dxchan;
1923 if ($ref && $flag && $dxchan) {
1924 $self->send(pc92r($from, $target, $flag, int($dxchan->{pingave}*1000)));
1927 } elsif ($sort eq 'R') {
1928 if (my $dxchan = DXChannel::get($from)) {
1929 handle_pc92_find_reply($dxchan, $pcall, $from, $target, @$pc[6,7]);
1931 my $ref = Route::get($from);
1933 my @dxchan = grep {$_->do_pc9x} $ref->alldxchan;
1935 $_->send($line) for @dxchan;
1937 dbg("PCPROT: $self->{call} : type R no return route, ignored") if isdbg('chanerr') || isdbg('route');
1940 dbg("PCPROT: $self->{call} : type R no return route, ignored") if isdbg('chanerr') || isdbg('route');
1946 } elsif ($sort eq 'K') {
1947 $pc92Kin += length $line;
1949 # remember the last channel we arrived on
1950 $parent->PC92C_dxchan($self->{call}, $hops) unless $self->{call} eq $parent->call;
1952 my @ent = _decode_pc92_call($pc->[4]);
1957 ($parent, $add) = $self->pc92_handle_first_slot(\@ent, $parent, $t, $hops);
1958 return unless $parent; # dupe
1960 push @radd, $add if $add;
1962 $parent->version($ent[4]) if $ent[4];
1965 $parent->build($ent[5]);
1968 dbg("ROUTE: reset obscount on $parent->{call} now " . $parent->obscount) if isdbg('obscount');
1970 } elsif ($sort eq 'A' || $sort eq 'D' || $sort eq 'C') {
1972 $pc92Ain += length $line if $sort eq 'A';
1973 $pc92Cin += length $line if $sort eq 'C';
1974 $pc92Din += length $line if $sort eq 'D';
1976 # remember the last channel we arrived on
1977 $parent->PC92C_dxchan($self->{call}, $hops) unless $self->{call} eq $parent->call;
1979 # this is the main route section
1980 # here is where all the routes are created and destroyed
1982 # cope with missing duplicate node calls in the first slot
1983 my $me = $pc->[4] || '';
1984 $me ||= _encode_pc92_call($parent) unless $me ;
1986 my @ent = map {my @a = _decode_pc92_call($_); @a ? \@a : ()} grep {$_ && /^[0-7]/} $me, @$pc[5 .. $#$pc];
1990 # look at the first one which will always be a node of some sort
1991 # except in the case of 'A' or 'D' in which the $pcall is used
1992 # otherwise use the node call and update any information
1993 # that needs to be done.
1996 ($parent, $add) = $self->pc92_handle_first_slot($ent[0], $parent, $t, $hops);
1997 return unless $parent; # dupe
2000 push @radd, $add if $add;
2003 # do a pass through removing any references to either mycall
2007 next unless $_ && @$_;
2008 if ($_->[0] eq $main::mycall) {
2009 LogDbg('err', "PCPROT: $self->{call} : type $sort $_->[0] refers to me, ignored");
2012 if ($_->[0] eq $main::myalias && $_->[1] || $_->[0] eq $main::mycall && $_->[1] == 0) {
2013 LogDbg('err',"PCPROT: $self->{call} : type $sort $_->[0] changing type to " . $_->[1]?"Node":"User" . ", ignored");
2022 push @radd, _add_thingy($parent, $_, $self, $hops);
2024 } elsif ($sort eq 'D') {
2026 push @rdel, _del_thingy($parent, $_, $self);
2028 } elsif ($sort eq 'C') {
2029 my (@nodes, @users);
2031 # we reset obscounts on config records as well as K records
2033 dbg("ROUTE: reset obscount on $parent->{call} now " . $parent->obscount) if isdbg('obscount');
2036 foreach my $r (@nent) {
2037 # my ($call, $is_node, $is_extnode, $here, $version, $build) = _decode_pc92_call($_);
2040 push @nodes, $r->[0];
2042 push @users, $r->[0];
2045 dbg("PCPROT: $self->{call} : pc92 call entry '$_' not decoded, ignored") if isdbg('chanerr') || isdbg('route');
2049 my ($dnodes, $dusers, $nnodes, $nusers) = $parent->calc_config_changes(\@nodes, \@users);
2052 foreach my $r (@nent) {
2055 push @radd,_add_thingy($parent, $r, $self, $hops) if grep $call eq $_, (@$nnodes, @$nusers);
2059 foreach my $r (@$dnodes) {
2060 push @rdel,_del_thingy($parent, [$r, 1], $self);
2062 foreach my $r (@$dusers) {
2063 push @rdel,_del_thingy($parent, [$r, 0], $self);
2066 # remember this last PC92C for rebroadcast on demand
2067 $parent->last_PC92C($line);
2069 dbg("PCPROT: unknown action '$sort', ignored") if isdbg('chanerr');
2073 foreach my $r (@rdel) {
2076 $self->route_pc21($pcall, undef, $r) if $r->isa('Route::Node');
2077 $self->route_pc17($pcall, undef, $parent, $r) if $r->isa('Route::User');
2079 my @pc19 = grep { $_ && $_->isa('Route::Node') } @radd;
2080 my @pc16 = grep { $_ && $_->isa('Route::User') } @radd;
2081 unshift @pc19, $parent if $self->{state} eq 'init92' && $oparent == $parent;
2082 $self->route_pc19($pcall, undef, @pc19) if @pc19;
2083 $self->route_pc16($pcall, undef, $parent, @pc16) if @pc16;
2086 # broadcast it if we get here
2087 $self->broadcast_route_pc9x($pcall, undef, $line, 0);
2090 # get all the routes for a thing, bearing in mind that the thing (e.g. a user)
2091 # might be on two or more nodes at the same time or that there may be more than
2092 # one equal distance neighbour to a node.
2094 # What this means that if sh/route g1tlh shows that he is on (say) two nodes, then
2095 # a Route::findroutes is done on each of those two nodes, the best route(s) taken from
2096 # each and then combined to give a set of dxchans to send the PC9x record down
2098 sub find_pc9x_routes
2101 my $ref = Route::get($to);
2105 if ($ref->isa('Route::User')) {
2106 my $dxchan = DXChannel::get($to);
2107 push @parent, $to if $dxchan;
2108 push @parent, $ref->parents;
2112 foreach my $p (@parent) {
2114 my @routes = Route::findroutes($p);
2115 foreach my $r (@routes) {
2116 $lasthops = $r->[0] unless defined $lasthops;
2117 if ($r->[0] == $lasthops) {
2118 $cand{$r->[1]->call} = $r->[1];
2124 return values %cand;
2135 # $self->{do_pc9x} ||= 1;
2137 my $pcall = $pc->[1]; # this is now checked earlier
2139 # remember that we are converting PC10->PC93 and self will be $main::me if it
2141 unless ($self->{do_pc9x}) {
2142 dbg("PCPROT: PC9x come in from non-PC9x node, ignored") if isdbg('chanerr');
2147 my $parent = check_pc9x_t($pcall, $t, 93, 1) || return;
2149 my $to = uc $pc->[3];
2150 my $from = uc $pc->[4];
2151 my $via = uc $pc->[5];
2152 my $text = $pc->[6];
2153 my $onode = uc $pc->[7];
2154 $onode = $pcall if @$pc <= 8;
2156 # this is catch loops caused by bad software ...
2157 if (eph_dup("PC93|$from|$text|$onode", $pc10_dupe_age)) {
2161 if (isdbg('progress')) {
2162 my $vs = $via ne '*' ? " via $via" : '';
2163 my $s = "ANNTALK: $from\@$onode$vs -> $to '$text' route: $origin";
2167 # will we allow it at all?
2170 if (@bad = BadWords::check($text)) {
2171 dbg("PCPROT: Bad words: @bad, dropped") if isdbg('chanerr');
2176 # if this is a 'bad spotter' user then ignore it
2178 $nossid =~ s/-\d+$//;
2179 if ($badspotter->in($nossid)) {
2180 dbg("PCPROT: Bad Spotter, dropped") if isdbg('chanerr');
2184 # ignore PC93 coming in from outside this node with a target of local
2185 if ($to eq 'LOCAL' && $self != $main::me) {
2186 dbg("PCPROT: incoming LOCAL chat not from local node, ignored") if isdbg('chanerr');
2190 # if it is routeable then then treat it like a talk
2191 my $ref = Route::get($to);
2195 # convert to PC10 or local talks where appropriate
2196 # PC93 capable nodes of the same hop count all get a copy
2197 # if there is a PC10 node then it will get a copy and that
2198 # will be it. Hopefully such a node will not figure highly
2199 # in the route list, unless it is local, 'cos it don't issue PC92s!
2200 # note that both local and PC93s at the same time are possible if the
2201 # user on more than one node.
2202 my @routes = find_pc9x_routes($to);
2204 foreach $dxchan (@routes) {
2205 if (ref $dxchan && $dxchan->isa('DXChannel')) {
2206 if ($dxchan->{do_pc9x}) {
2207 $dxchan->send($line);
2209 $dxchan->talk($from, $to, $via, $text, $onode);
2212 dbg("ERROR: $to -> $dxchan is not a DXChannel! (convert to pc10)");
2217 } elsif ($to eq '*' || $to eq 'SYSOP' || $to eq 'WX') {
2219 my $sysop = $to eq 'SYSOP' ? '*' : ' ';
2220 my $wx = $to eq 'WX' ? '1' : '0';
2221 my $local = $via eq 'LOCAL' ? '*' : $via;
2223 $self->send_announce(1, pc12($from, $text, $local, $sysop, $wx, $pcall), $from, $local, $text, $sysop, $pcall, $wx, $via eq 'LOCAL' ? $via : undef);
2224 return if $via eq 'LOCAL';
2225 } elsif (!is_callsign($to) && $text =~ /^#\d+ /) {
2226 # chat messages really only locally connected users
2227 $self->send_chat(1, $line, $from, '*', $text, $to, $pcall, '0');
2230 # broadcast this chat sentence everywhere unless it is targetted to 'LOCAL'
2231 $self->broadcast_route_pc9x($pcall, undef, $line, 0) unless $to eq 'LOCAL' || $via eq 'LOCAL';
2234 # if get here then rebroadcast the thing with its Hop count decremented (if
2235 # there is one). If it has a hop count and it decrements to zero then don't
2238 # NOTE - don't arrive here UNLESS YOU WANT this lump of protocol to be
2250 unless (eph_dup($line)) {
2252 my $pcall = $pc->[1];
2253 unless (is_callsign($pcall)) {
2254 dbg("PCPROT: invalid callsign string '$pc->[1]', ignored") if isdbg('chanerr');
2258 my $parent = check_pc9x_t($pcall, $t, $pcno, 1) || return;
2259 $self->broadcast_route_pc9x($pcall, undef, $line, 0);
2261 unless ($self->{isolate}) {
2262 DXChannel::broadcast_nodes($line, $self) if $line =~ /\^H\d+\^?~?$/; # send it to everyone but me