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 = 1; # 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], $pc->[6]));
146 # route 'foreign' pc26s
148 if ($pc->[7] ne $main::mycall) {
149 $self->route($pc->[7], $line);
154 # my ($hops) = $pc->[8] =~ /^H(\d+)/;
156 # is the spotted callsign blank? This should really be trapped earlier but it
157 # could break other protocol sentences. Also check for lower case characters.
158 if ($pc->[2] =~ /^\s*$/) {
159 dbg("PCPROT: blank callsign, dropped") if isdbg('chanerr');
162 if ($pc->[2] =~ /[a-z]/) {
163 dbg("PCPROT: lowercase characters, dropped") if isdbg('chanerr');
168 # if this is a 'nodx' node then ignore it
169 if ($badnode->in($pc->[7])) {
170 dbg("PCPROT: Bad Node $pc->[7], dropped") if isdbg('chanerr');
174 # 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
175 my $nossid = $pc->[6];
176 $nossid =~ s/-\d+$//;
177 if ($badspotter->in($nossid)) {
178 dbg("PCPROT: Bad Spotter $pc->[6], dropped") if isdbg('chanerr');
182 # convert the date to a unix date
183 my $d = cltounix($pc->[3], $pc->[4]);
184 # bang out (and don't pass on) if date is invalid or the spot is too old (or too young)
185 if (!$d || (($pcno == 11 || $pcno == 61) && ($d < $main::systime - $pc11_max_age || $d > $main::systime + 900))) {
186 dbg("PCPROT: Spot ignored, invalid date or out of range ($pc->[3] $pc->[4])\n") if isdbg('chanerr');
191 if ($baddx->in($pc->[2]) || BadWords::check($pc->[2])) {
192 dbg("PCPROT: Bad DX spot, ignored") if isdbg('chanerr');
197 $pc->[5] =~ s/^\s+//; # take any leading blanks off
198 $pc->[2] = unpad($pc->[2]); # take off leading and trailing blanks from spotted callsign
199 if ($pc->[2] =~ /BUST\w*$/) {
200 dbg("PCPROT: useless 'BUSTED' spot") if isdbg('chanerr');
205 if (@bad = BadWords::check($pc->[5])) {
206 dbg("PCPROT: Bad words: @bad, dropped") if isdbg('chanerr');
212 my @spot = Spot::prepare($pc->[1], $pc->[2], $d, $pc->[5], $nossid, $pc->[7], $pc->[8]);
214 # global spot filtering on INPUT
215 if ($self->{inspotsfilter}) {
216 my ($filter, $hops) = $self->{inspotsfilter}->it(@spot);
218 dbg("PCPROT: Rejected by input spot filter") if isdbg('chanerr');
223 # this goes after the input filtering, but before the add
224 # so that if it is input filtered, it isn't added to the dup
225 # list. This allows it to come in from a "legitimate" source
226 if (my $key = Spot::dup(@spot[0..4,7])) {
227 dbg("PCPROT: Duplicate Spot $pc->[0] $key ignored\n") if isdbg('chanerr') || isdbg('dupespot');
231 # here we verify the spotter is currently connected to the node it says it is one. AKA email sender verify
232 # but without the explicit probe to the node. We are relying on "historical" information, but it very likely
233 # to be current once we have seen the first PC92C from that node.
235 # As for spots generated from non-PC92 nodes, we'll see after about do_pc9x3h20m...
238 my $nroute = Route::Node::get($pc->[7]);
239 my $uroute = Route::Node::get($pc->[6]);
240 my $local = DXChannel::get($pc->[7]);
242 if ($nroute && ($nroute->last_PC92C || ($local && !$local->do_pc9x))) {
244 my $ip = $pcno == 61 ? $pc->[8] : '';
245 # $s .= "User $pc->[6] not logged in, " unless $uroute;
246 $s .= "User $pc->[6] not on node $pc->[7], " unless $nroute->is_user($pc->[6]);
247 # $s .= "Node $pc->[7] at '$ip' not on Node's IP " . $nroute->ip if $ip && $nroute && $nroute->ip && $nroute->ip ne $ip;
249 my $action = $senderverify > 1 ? ", DUMPED" : '';
251 dbg("PCProt: Suspicious Spot $pc->[2] on $pc->[1] by $pc->[6]($ip)\@$pc->[7] $s$action");
252 return unless $senderverify < 2;
257 # If is a new PC11, store it, releasing the one that is there (if any),
258 # if a PC61 comes along then dump the stored PC11
259 # If there is a different PC11 stored, release that one and store this PC11 instead,
265 $ip ||= $spot[14] if exists $spot[14];
266 if (isdbg('progress')) {
267 my $sip = $ip ? sprintf "($ip)" : '' unless $ip =~ m|[\(\)\*]|;
269 my $d = ztime($spot[2]);
270 my $s = "SPOT: $spot[1] on $spot[0] \@ $d by $spot[4]$sip\@$spot[7]";
271 $s .= $spot[3] ? " '$spot[3]'" : q{ ''};
272 $s .= " route: $origin";
277 # @spot at this point contains:-
278 # freq, spotted call, time, text, spotter, spotted cc, spotters cc, orig node
279 # then spotted itu, spotted cq, spotters itu, spotters cq
280 # you should be able to route on any of these
283 # fix up qra locators of known users
284 my $user = DXUser::get_current($spot[4]);
286 my $qra = $user->qra;
287 unless ($qra && is_qra($qra)) {
288 my $lat = $user->lat;
289 my $long = $user->long;
290 if (defined $lat && defined $long) {
291 $user->qra(DXBearing::lltoqra($lat, $long));
296 # send a remote command to a distant cluster if it is visible and there is no
297 # qra locator and we havn't done it for a month.
299 unless ($user->qra) {
301 my $to = $user->homenode;
302 my $last = $user->lastoper || 0;
303 if ($send_opernam && $to && $to ne $main::mycall && $main::systime > $last + $DXUser::lastoperinterval && ($node = Route::Node::get($to)) ) {
304 my $cmd = "forward/opernam $spot[4]";
305 # send the rcmd but we aren't interested in the replies...
306 my $dxchan = $node->dxchan;
307 if ($dxchan && $dxchan->is_clx) {
308 route(undef, $to, pc84($main::mycall, $to, $main::mycall, $cmd));
310 route(undef, $to, pc34($main::mycall, $to, $cmd));
312 if ($to ne $origin) {
314 $node = Route::Node::get($to);
316 $dxchan = $node->dxchan;
317 if ($dxchan && $dxchan->is_clx) {
318 route(undef, $to, pc84($main::mycall, $to, $main::mycall, $cmd));
320 route(undef, $to, pc34($main::mycall, $to, $cmd));
324 $user->lastoper($main::systime);
331 if (defined &Local::spot) {
334 $r = Local::spot($self, @spot);
339 # DON'T be silly and send on PC26s!
340 return if $pcno == 26;
342 # send out the filtered spots
343 send_dx_spot($self, $line, @spot) if @spot;
346 # used to kick outstanding PC11 if required
361 # announce duplicate checking
362 $pc->[3] =~ s/^\s+//; # remove leading blanks
366 if (@bad = BadWords::check($pc->[3])) {
367 dbg("PCPROT: Bad words: @bad, dropped") if isdbg('chanerr');
372 # if this is a 'nodx' node then ignore it
373 if ($badnode->in($pc->[5])) {
374 dbg("PCPROT: Bad Node, dropped") if isdbg('chanerr');
378 # if this is a 'bad spotter' user then ignore it
379 my $nossid = $pc->[1];
380 $nossid =~ s/-\d+$//;
381 if ($badspotter->in($nossid)) {
382 dbg("PCPROT: Bad Spotter, dropped") if isdbg('chanerr');
386 # ignore PC12s from origins that use PCxx protocol
387 my $oref = Route::get($origin);
388 if ($oref->do_pc9x) {
389 dbg("PCPROT: PC12 rxed from PC9x node, ignored") if isdbg('chanerr');
395 if ((($dxchan = DXChannel::get($pc->[2])) && $dxchan->is_user) || $pc->[4] =~ /^[\#\w.]+$/){
396 $self->send_chat(0, $line, @$pc[1..6]);
397 } elsif ($pc->[2] eq '*' || $pc->[2] eq $main::mycall) {
399 # ignore something that looks like a chat line coming in with sysop
400 # flag - this is a kludge...
401 if ($pc->[3] =~ /^\#\d+ / && $pc->[4] eq '*') {
402 dbg('PCPROT: Probable chat rewrite, dropped') if isdbg('chanerr');
406 # here's a bit of fun, convert incoming ann with a callsign in the first word
407 # or one saying 'to <call>' to a talk if we can route to the recipient
409 my $call = AnnTalk::is_talk_candidate($pc->[1], $pc->[3]);
411 my $ref = Route::get($call);
413 $dxchan = $ref->dxchan;
414 $dxchan->talk($pc->[1], $call, undef, $pc->[3], $pc->[5]) if $dxchan != $self;
421 $self->send_announce(0, $line, @$pc[1..6]);
423 $self->route($pc->[2], $line);
427 if (defined &Local::ann) {
430 $r = Local::ann($self, $line, @$pc[1..6]);
444 if (eph_dup($line, $eph_pc15_restime)) {
447 unless ($self->{isolate}) {
448 DXChannel::broadcast_nodes($line, $self) if $line =~ /\^H\d+\^?~?$/; # send it to everyone but me
464 my $ncall = $pc->[1];
465 my $newline = "PC16^";
467 # dos I want users from this channel?
468 unless ($self->user->wantpc16) {
469 dbg("PCPROT: don't send users to $self->{call}") if isdbg('chanerr');
474 if ($ncall eq $main::mycall) {
475 dbg("PCPROT: trying to alter config on this node from outside!") if isdbg('chanerr');
480 $h = 1 if DXChannel::get($ncall);
481 if ($h && $self->{call} ne $ncall) {
482 dbg("PCPROT: trying to update a local node, ignored") if isdbg('chanerr');
486 if (eph_dup($line)) {
490 # isolate now means only accept stuff from this call only
491 if ($self->{isolate} && $ncall ne $self->{call}) {
492 dbg("PCPROT: $self->{call} isolated, $ncall ignored") if isdbg('chanerr');
496 my $parent = Route::Node::get($ncall);
499 $dxchan = $parent->dxchan;
500 if ($dxchan && $dxchan ne $self) {
501 dbg("PCPROT: PC16 from $self->{call} trying to alter locally connected $ncall, ignored!") if isdbg('chanerr');
505 # input filter if required
506 return unless $self->in_filter_route($parent);
508 $parent = Route::Node->new($ncall);
512 if ($parent->via_pc92) {
513 dbg("PCPROT: non-local node controlled by PC92, ignored") if isdbg('chanerr');
520 for ($i = 2; $i < $#$pc; $i++) {
521 my ($call, $conf, $here) = $pc->[$i] =~ /^(\S+) (\S) (\d)/o;
522 next unless $call && $conf && defined $here && is_callsign($call);
523 next if $call eq $main::mycall;
525 eph_del_regex("^PC17\\^$call\\^$ncall");
527 $conf = $conf eq '*';
529 # reject this if we think it is a node already
530 my $r = Route::Node::get($call);
531 my $u = DXUser::get_current($call) unless $r;
532 if ($r || ($u && $u->is_node)) {
533 dbg("PCPROT: $call is a node") if isdbg('chanerr');
537 $r = Route::User::get($call);
538 my $flags = Route::here($here)|Route::conf($conf);
541 my $au = $r->addparent($parent);
542 if ($r->flags != $flags) {
546 push @rout, $r if $h && $au;
548 my @ans = $parent->add_user($call, $flags);
549 push @rout, @ans if $h && @ans;
552 # add this station to the user database, if required
553 my $user = DXUser::get_current($ncall);
554 $user = DXUser->new($call) unless $user;
555 $user->homenode($parent->call) if !$user->homenode;
556 $user->node($parent->call);
557 $user->lastin($main::systime) unless DXChannel::get($call);
560 # send info to all logged in thingies
561 $self->tell_login('loginu', "$ncall: $call") if $user->is_local_node;
562 $self->tell_buddies('loginb', $call, $ncall);
565 $self->route_pc16($origin, $line, $parent, @rout) if @rout;
566 # $self->route_pc92a($main::mycall, undef, $parent, @rout) if $h && $self->{state} eq 'normal';
580 my $ncall = $pc->[2];
581 my $ucall = $pc->[1];
583 eph_del_regex("^PC16\\^$ncall.*$ucall");
585 # do I want users from this channel?
586 unless ($self->user->wantpc16) {
587 dbg("PCPROT: don't send users to $self->{call}") if isdbg('chanerr');
591 if ($ncall eq $main::mycall) {
592 dbg("PCPROT: trying to alter config on this node from outside!") if isdbg('chanerr');
596 # isolate now means only accept stuff from this call only
597 if ($self->{isolate} && $ncall ne $self->{call}) {
598 dbg("PCPROT: $self->{call} isolated, $ncall ignored") if isdbg('chanerr');
602 my $uref = Route::User::get($ucall);
604 dbg("PCPROT: Route::User $ucall not in config") if isdbg('chanerr');
607 my $parent = Route::Node::get($ncall);
609 dbg("PCPROT: Route::Node $ncall not in config") if isdbg('chanerr');
613 $dxchan = DXChannel::get($ncall);
614 if ($dxchan && $dxchan ne $self) {
615 dbg("PCPROT: PC17 from $self->{call} trying to alter locally connected $ncall, ignored!") if isdbg('chanerr');
620 if ($parent->via_pc92) {
621 dbg("PCPROT: non-local node controlled by PC92, ignored") if isdbg('chanerr');
626 if (DXChannel::get($ucall)) {
627 dbg("PCPROT: trying do disconnect local user, ignored") if isdbg('chanerr');
631 # input filter if required and then remove user if present
632 # return unless $self->in_filter_route($parent);
633 $parent->del_user($uref);
635 # send info to all logged in thingies
636 my $user = DXUser::get_current($ncall);
637 $self->tell_login('logoutu', "$ncall: $ucall") if $user && $user->is_local_node;
638 $self->tell_buddies('logoutb', $ucall, $ncall);
640 if (eph_dup($line)) {
644 $self->route_pc17($origin, $line, $parent, $uref);
645 # $self->route_pc92d($main::mycall, undef, $parent, $uref) if $dxchan;
657 $self->state('init');
659 my $parent = Route::Node::get($self->{call});
661 # record the type and version offered
662 if (my ($version) = $pc->[1] =~ /DXSpider Version: (\d+\.\d+)/) {
663 $self->{version} = 53 + $version;
664 $self->user->version(53 + $version);
665 $parent->version(0 + $version);
666 my ($build) = $pc->[1] =~ /Build: (\d+(?:\.\d+)?)/;
667 $self->{build} = 0 + $build;
668 $self->user->build(0 + $build);
669 $parent->build(0 + $build);
670 dbg("$self->{call} = DXSpider version $version build $build");
671 unless ($self->is_spider) {
672 dbg("Change U " . $self->user->sort . " C $self->{sort} -> S");
673 $self->user->sort('S');
677 # $self->{handle_xml}++ if DXXml::available() && $pc->[1] =~ /\bxml/;
679 dbg("$self->{call} = Unknown software ($pc->[1] $pc->[2])");
680 $self->version(50.0);
681 $self->version($pc->[2] / 100) if $pc->[2] && $pc->[2] =~ /^\d+$/;
682 $self->user->version($self->version);
685 if ($pc->[1] =~ /\bpc9x/) {
686 if ($self->{isolate}) {
687 dbg("$self->{call} pc9x recognised, but node is isolated, using old protocol");
688 } elsif (!$self->user->wantpc9x) {
689 dbg("$self->{call} pc9x explicitly switched off, using old protocol");
691 $self->{do_pc9x} = 1;
692 dbg("$self->{call} Set do PC9x");
696 # first clear out any nodes on this dxchannel
697 my @rout = $parent->del_nodes;
698 $self->route_pc21($origin, $line, @rout, $parent) if @rout;
699 $self->send_local_config();
709 # add this station to the user database, if required (don't remove SSID from nodes)
710 my $user = DXUser::get_current($call);
712 $user = DXUser->new($call);
713 $user->priv(1); # I have relented and defaulted nodes
715 $user->homenode($call);
717 $user->sort($type || 'A');
718 $user->lastin($main::systime); # this make it last longer than just this invocation
719 $user->put; # just to make sure it gets written away!!!
724 # incoming cluster list
734 my $newline = "PC19^";
737 my (@rout, @pc92out);
739 # first get the INTERFACE node
740 my $parent = Route::Node::get($self->{call});
742 dbg("PCPROT: my parent $self->{call} has disappeared");
751 # We are making a major change from now on. We are only going to accept
752 # PC19s from directly connected nodes. This means that we are probably
753 # going to throw away most of the data that we are being sent.
755 # The justification for this is that most of it is wrong or out of date
758 # From now on we are only going to believe PC92 data and locally connected
761 for ($i = 1; $i < $#$pc-1; $i += 4) {
762 my $here = $pc->[$i];
763 my $call = uc $pc->[$i+1];
764 my $conf = $pc->[$i+2];
765 my $ver = $pc->[$i+3];
766 next unless defined $here && defined $conf && is_callsign($call);
768 eph_del_regex("^PC(?:21\\^$call|17\\^[^\\^]+\\^$call)");
770 # check for sane parameters
771 # $ver = 5000 if $ver eq '0000';
772 next unless $ver && $ver =~ /^\d+$/;
773 next if $ver < 5000; # only works with version 5 software
774 next if length $call < 3; # min 3 letter callsigns
775 next if $call eq $main::mycall || $call eq $main::myalias;
777 # check that this PC19 isn't trying to alter the wrong dxchan
779 my $dxchan = DXChannel::get($call);
781 if ($dxchan == $self) {
784 dbg("PCPROT: PC19 from $self->{call} trying to alter wrong locally connected $call, ignored!") if isdbg('chanerr');
789 # isolate now means only accept stuff from this call only
790 if ($self->{isolate} && $call ne $self->{call}) {
791 dbg("PCPROT: $self->{call} isolated, $call ignored") if isdbg('chanerr');
795 my $user = check_add_node($call);
797 # if (eph_dup($genline)) {
798 # dbg("PCPROT: dup PC19 for $call detected") if isdbg('chanerr');
804 if ($parent->via_pc92) {
805 dbg("PCPROT: non-local node controlled by PC92, ignored") if isdbg('chanerr');
810 my $r = Route::Node::get($call);
811 my $flags = Route::here($here)|Route::conf($conf);
813 # modify the routing table if it is in it, otherwise store it in the pc19list for now
816 if ($call ne $parent->call) {
817 if ($self->in_filter_route($r)) {
818 $ar = $parent->add($call, $ver, $flags);
819 # push @rout, $ar if $ar;
824 if ($r->version ne $ver || $r->flags != $flags) {
830 if ($call eq $self->{call} || $user->wantroutepc19) {
831 my $new = Route->new($call); # throw away
832 if ($self->in_filter_route($new)) {
833 my $ar = $parent->add($call, $ver, $flags);
834 $user->wantroutepc19(1) unless defined $user->wantroutepc19;
835 push @rout, $ar if $ar;
836 push @pc92out, $r if $h;
843 # unbusy and stop and outgoing mail (ie if somehow we receive another PC19 without a disconnect)
844 my $mref = DXMsg::get_busy($call);
845 $mref->stop_msg($call) if $mref;
847 $user->lastin($main::systime) unless DXChannel::get($call);
851 # we are not automatically sending out PC19s, we send out a composite PC21,PC19 instead
852 # but remember there will only be one (pair) these because any extras will be
855 # $self->route_pc21($self->{call}, $line, @rout);
856 $self->route_pc19($self->{call}, $line, @rout);
858 if (@pc92out && !$pc92_slug_changes) {
859 $self->route_pc92a($main::mycall, $line, $main::routeroot, @pc92out) if $self->{state} eq 'normal';
863 # send local configuration
872 if ($self->{do_pc9x} && $self->{state} ne 'init92') {
873 $self->send("Reseting to oldstyle routing because login call not sent in any pc92");
874 $self->{do_pc9x} = 0;
876 $self->send_local_config;
878 $self->state('normal');
879 $self->{lastping} = 0;
880 $self->route_pc92a($main::mycall, undef, $main::routeroot, Route::Node::get($self->{call}));
883 # delete a cluster from the list
885 # This should never occur for directly connected nodes.
895 my $call = uc $pc->[1];
897 eph_del_regex("^PC1[679].*$call");
899 # if I get a PC21 from the same callsign as self then ignore it
900 if ($call eq $self->{call}) {
901 dbg("PCPROT: self referencing PC21 from $self->{call}");
905 # for the above reason and also because of the check for PC21s coming
906 # in for self->call from outside being ignored further down
907 # we don't need any isolation code here, because we will never
908 # act on a PC21 with self->call in it.
910 my $parent = Route::Node::get($self->{call});
912 dbg("PCPROT: my parent $self->{call} has disappeared");
919 if ($call ne $main::mycall && $call ne $main::myalias) { # don't allow malicious buggers to disconnect me!
920 my $node = Route::Node::get($call);
923 if ($node->via_pc92) {
924 dbg("PCPROT: controlled by PC92, ignored") if isdbg('chanerr');
928 my $dxchan = DXChannel::get($call);
929 if ($dxchan && $dxchan != $self) {
930 dbg("PCPROT: PC21 from $self->{call} trying to alter locally connected $call, ignored!") if isdbg('chan');
935 return unless $self->in_filter_route($node);
937 # routing objects, force a PC21 if it is local
938 push @rout, $node->del($parent);
939 push @rout, $call if $dxchan && @rout == 0;
942 dbg("PCPROT: I WILL _NOT_ be disconnected!") if isdbg('chan');
946 if (eph_dup($line)) {
951 $self->route_pc21($origin, $line, @rout);
952 # $self->route_pc92d($main::mycall, $line, $main::routeroot, @rout);
965 if ($self->{do_pc9x}) {
966 if ($self->{state} ne 'init92') {
967 $self->send("Reseting to oldstyle routing because login call not sent in any pc92");
968 $self->{do_pc9x} = 0;
971 $self->{lastping} = 0;
972 $self->state('normal');
973 $self->route_pc92a($main::mycall, undef, $main::routeroot, Route::Node::get($self->{call}));
985 # route foreign' pc27s
987 if ($pc->[8] ne $main::mycall) {
988 $self->route($pc->[8], $line);
995 my $d = cltounix($pc->[1], sprintf("%02d18Z", $pc->[2]));
996 my $sfi = unpad($pc->[3]);
997 my $k = unpad($pc->[4]);
998 my $i = unpad($pc->[5]);
999 my ($r) = $pc->[6] =~ /R=(\d+)/;
1001 if (($pcno == 23 && $d < $main::systime - $pc23_max_age) || $d > $main::systime + 1500 || $pc->[2] < 0 || $pc->[2] > 23) {
1002 dbg("PCPROT: WWV Date ($pc->[1] $pc->[2]) out of range") if isdbg('chanerr');
1006 # global wwv filtering on INPUT
1007 my @dxcc = ((Prefix::cty_data($pc->[7]))[0..2], (Prefix::cty_data($pc->[8]))[0..2]);
1008 if ($self->{inwwvfilter}) {
1009 my ($filter, $hops) = $self->{inwwvfilter}->it(@$pc[7,8], $origin, @dxcc);
1011 dbg("PCPROT: Rejected by input wwv filter") if isdbg('chanerr');
1015 $pc->[7] =~ s/-\d+$//o; # remove spotter's ssid
1016 if (Geomag::dup($d,$sfi,$k,$i,$pc->[6],$pc->[7])) {
1017 dbg("PCPROT: Dup WWV Spot ignored\n") if isdbg('chanerr');
1021 # note this only takes the first one it gets
1022 Geomag::update($d, $pc->[2], $sfi, $k, $i, @$pc[6..8], $r);
1023 dbg("WWV: <$pc->[2]>, sfi=$sfi k=$k info=$i '$pc->[6]' $pc->[7]\@$pc->[8] $r route: $origin") if isdbg('progress');
1025 if (defined &Local::wwv) {
1028 $rep = Local::wwv($self, $pc->[1], $pc->[2], $sfi, $k, $i, @$pc[6..8], $r);
1033 # DON'T be silly and send on PC27s!
1034 return if $pcno == 27;
1036 # broadcast to the eager world
1037 send_wwv_spot($self, $line, $d, $pc->[2], $sfi, $k, $i, @$pc[6..8]);
1049 my $call = uc $pc->[1];
1051 $nref = Route::Node::get($call);
1052 $uref = Route::User::get($call);
1053 return unless $nref || $uref; # if we don't know where they are, it's pointless sending it on
1055 if (eph_dup($line)) {
1059 $nref->here($pc->[2]) if $nref;
1060 $uref->here($pc->[2]) if $uref;
1061 my $ref = $nref || $uref;
1062 return unless $self->in_filter_route($ref);
1064 $self->route_pc24($origin, $line, $ref, $pc->[3]);
1076 if ($pc->[1] ne $main::mycall) {
1077 $self->route($pc->[1], $line);
1080 if ($pc->[2] eq $main::mycall) {
1081 dbg("PCPROT: Trying to merge to myself, ignored") if isdbg('chan');
1085 Log('DXProt', "Merge request for $pc->[3] spots and $pc->[4] WWV from $pc->[2]");
1089 my @in = reverse Spot::search(1, undef, undef, 0, $pc->[3]);
1092 $self->send(pc26(@{$in}[0..4], $pc->[2]));
1098 my @in = reverse Geomag::search(0, $pc->[4], time, 1);
1101 $self->send(pc27(@{$in}[0..5], $pc->[2]));
1106 sub handle_26 {goto &handle_11}
1107 sub handle_27 {goto &handle_23}
1109 # mail/file handling
1118 if ($pc->[1] eq $main::mycall) {
1120 my $sub = "DXMsg::handle_$pcno";
1123 $self->route($pc->[1], $line) unless $self->is_clx;
1127 sub handle_29 {goto &handle_28}
1128 sub handle_30 {goto &handle_28}
1129 sub handle_31 {goto &handle_28}
1130 sub handle_32 {goto &handle_28}
1131 sub handle_33 {goto &handle_28}
1141 if (eph_dup($line, $eph_pc34_restime)) {
1144 $self->process_rcmd($pc->[1], $pc->[2], $pc->[2], $pc->[3]);
1148 # remote command replies
1157 eph_del_regex("^PC35\\^$pc->[2]\\^$pc->[1]\\^");
1158 $self->process_rcmd_reply($pc->[1], $pc->[2], $pc->[1], $pc->[3]);
1161 sub handle_36 {goto &handle_34}
1172 if ($pc->[1] eq $main::mycall) {
1174 my $sub = "DXDb::handle_$pcno";
1177 $self->route($pc->[1], $line) unless $self->is_clx;
1181 # node connected list from neighbour
1191 # incoming disconnect
1200 if ($pc->[1] eq $self->{call}) {
1201 $self->disconnect(1);
1203 dbg("PCPROT: came in on wrong channel") if isdbg('chanerr');
1207 sub handle_40 {goto &handle_28}
1218 my $call = $pc->[1];
1219 my $sort = $pc->[2];
1222 my $l = "PC41^$call^$sort";
1223 if (eph_dup($l, $eph_info_restime)) {
1227 # input filter if required
1228 # my $ref = Route::get($call) || Route->new($call);
1229 # return unless $self->in_filter_route($ref);
1231 if ($val eq $sort || $val =~ /^\s*$/) {
1232 dbg('PCPROT: invalid value') if isdbg('chanerr');
1236 if ($call eq $main::mycall || $call eq $main::myalias) {
1237 dbg "DXPROT: PC41 trying to update $call from outside via $origin, ignored";
1240 my $chan = DXChannel::get($call);
1242 dbg "DXPROT: PC41 trying to update online $call from outside via $origin, ignored";
1246 # add this station to the user database, if required
1247 my $user = DXUser::get_current($call);
1248 $user = DXUser->new($call) unless $user;
1251 if (($val =~ /spotter/i || $val =~ /self/i) && $user->name && $user->name ne $val) {
1252 dbg("PCPROT: invalid name") if isdbg('chanerr');
1256 } elsif ($sort == 2) {
1258 } elsif ($sort == 3) {
1259 if (is_latlong($val)) {
1260 my ($lat, $long) = DXBearing::stoll($val);
1261 $user->lat($lat) if $lat;
1262 $user->long($long) if $long;
1263 $user->qra(DXBearing::lltoqra($lat, $long)) unless $user->qra;
1265 dbg('PCPROT: not a valid lat/long') if isdbg('chanerr');
1268 } elsif ($sort == 4) {
1269 $user->homenode($val);
1270 } elsif ($sort == 5) {
1271 if (is_qra(uc $val)) {
1272 my ($lat, $long) = DXBearing::qratoll(uc $val);
1273 $user->lat($lat) if $lat && !$user->lat;
1274 $user->long($long) if $long && !$user->long;
1275 $user->qra(uc $val);
1277 dbg('PCPROT: not a valid QRA locator') if isdbg('chanerr');
1281 $user->lastoper($main::systime); # to cut down on excessive for/opers being generated
1284 unless ($self->{isolate}) {
1285 DXChannel::broadcast_nodes($line, $self); # send it to everyone but me
1288 # perhaps this IS what we want after all
1289 # $self->route_pc41($ref, $call, $sort, $val, $pc->[4]);
1292 sub handle_42 {goto &handle_28}
1296 sub handle_44 {goto &handle_37}
1297 sub handle_45 {goto &handle_37}
1298 sub handle_46 {goto &handle_37}
1299 sub handle_47 {goto &handle_37}
1300 sub handle_48 {goto &handle_37}
1302 # message and database
1311 if (eph_dup($line)) {
1315 if ($pc->[1] eq $main::mycall) {
1316 DXMsg::handle_49($self, @$pc);
1318 $self->route($pc->[1], $line) unless $self->is_clx;
1322 # keep alive/user list
1331 return if (eph_dup($line));
1333 my $call = $pc->[1];
1335 my $node = Route::Node::get($call);
1337 return unless $node->call eq $self->{call};
1338 $node->usercount($pc->[2]) unless $node->users;
1340 $node->PC92C_dxchan($self->call, $pc->[-1]);
1342 # input filter if required
1343 # return unless $self->in_filter_route($node);
1345 unless ($self->{isolate}) {
1346 DXChannel::broadcast_nodes($line, $self); # send it to everyone but me
1348 # $self->route_pc50($origin, $line, $node, $pc->[2], $pc->[3]) unless eph_dup($line);
1352 # incoming ping requests/answers
1362 my $from = $pc->[2];
1363 my $flag = $pc->[3];
1365 if ($to eq $main::myalias) {
1366 dbg("DXPROT: Ping addressed to \$myalias ($main::myalias), ignored") if isdbg('chan');
1371 if ($to eq $main::mycall) {
1373 $self->send(pc51($from, $to, '0'));
1375 DXXml::Ping::handle_ping_reply($self, $from);
1378 if (eph_dup($line)) {
1381 # route down an appropriate thingy
1382 $self->route($to, $line);
1386 sub handle_61 { goto &handle_11; }
1388 # dunno but route it
1397 my $call = $pc->[1];
1398 if ($call ne $main::mycall) {
1399 $self->route($call, $line);
1412 my $call = $pc->[1];
1415 my $d = cltounix($call, sprintf("%02d18Z", $pc->[2]));
1416 if (($pcno == 23 && $d < $main::systime - $pc23_max_age) || $d > $main::systime + 1500 || $pc->[2] < 0 || $pc->[2] > 23) {
1417 dbg("PCPROT: WCY Date ($call $pc->[2]) out of range") if isdbg('chanerr');
1420 $pc = [ map { unpad($_) } @$pc ];
1422 dbg("PCPROT: Dup WCY Spot ignored\n") if isdbg('chanerr');
1426 my $wcy = WCY::update($d, @$pc[2..12]);
1427 dbg("WCY: <$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');
1429 if (defined &Local::wcy) {
1432 $rep = Local::wcy($self, @$pc[1..12]);
1437 # broadcast to the eager world
1438 send_wcy_spot($self, $line, $d, @$pc[2..12]);
1441 # remote commands (incoming)
1450 $self->process_rcmd($pc->[1], $pc->[2], $pc->[3], $pc->[4]);
1453 # remote command replies
1462 $self->process_rcmd_reply($pc->[1], $pc->[2], $pc->[3], $pc->[4]);
1465 # decode a pc92 call: flag call : version : build
1466 sub _decode_pc92_call
1469 my @part = split /:/, $icall;
1470 my ($flag, $call) = unpack "A A*", $part[0];
1471 unless (defined $flag && $flag ge '0' && $flag le '7') {
1472 dbg("PCPROT: $icall no flag byte (0-7) at front of call, ignored") if isdbg('chanerr');
1475 unless ($call && is_callsign($call)) {
1476 dbg("PCPROT: $icall no recognisable callsign, ignored") if isdbg('chanerr');
1479 my $is_node = $flag & 4;
1480 my $is_extnode = $flag & 2;
1481 my $here = $flag & 1;
1483 $ip ||= $part[1] if $part[1] && $part[1] !~ /^\d+$/ && ($part[1] =~ /^(?:\d+\.)+/ || $part[1] =~ /^(?:(?:[abcdef\d]+)?,)+/);
1484 $ip =~ s/,/:/g if $ip;
1485 return ($call, $is_node, $is_extnode, $here, $part[1], $part[2], $ip);
1488 # decode a pc92 call: flag call : version : build
1489 sub _encode_pc92_call
1493 # plain call or value
1494 return $ref unless ref $ref;
1496 my $ext = shift || 0;
1498 my $call = $ref->call;
1500 $flag |= $ref->here ? 1 : 0;
1501 if ($ref->isa('Route::Node') || $ref->isa('DXProt')) {
1503 my $dxchan = DXChannel::get($call);
1504 $flag |= 2 if $call ne $main::mycall && $dxchan && !$dxchan->{do_pc9x};
1505 if (($ext & 1) && $ref->version) {
1506 my $version = $ref->version || 1.0;
1507 $version = $version * 100 + 5300 if $version < 50;
1508 $extra .= ":" . $version;
1511 if (($ext & 2) && $ref->ip) {
1514 $extra .= ':' . $ip;
1516 return "$flag$call$extra";
1529 my ($call, $is_node, $is_extnode, $here, $version, $build, $ip) = @$s;
1532 # remove spurious IPV6 prefix on IPV4 addresses
1533 $ip =~ s/^::ffff:// if $ip;
1536 my $ncall = $parent->call;
1537 if ($ncall ne $call) {
1539 unless (DXChannel::get($call)) { # i.e. external entity - create an user entry for it - ALL entities will appear in ALL user files from now on.
1540 $user = DXUser::get($call);
1542 $user = DXUser->new($call);
1543 dbg("PCProt::_add_thingy new user $call");
1547 dbg("ROUTE: added node $call to $ncall") if isdbg('routelow');
1548 @rout = $parent->add($call, $version, Route::here($here), $ip);
1549 my $r = Route::Node::get($call);
1550 $r->PC92C_dxchan($dxchan->call, $hops) if $r;
1553 Log('DXProt', "PC92A $call -> $ip on $ncall");
1555 if ($user && $user->sort eq 'U') {
1556 if (defined $version) {
1557 if ($version >= 5455 && $build > 0 || $version >= 3000 ) {
1562 dbg("PCProt::_add_thingy node $call sort updated " . $user->sort);
1566 dbg("ROUTE: added user $call to $ncall") if isdbg('routelow');
1567 my $user = check_add_node($call, 'U');
1568 @rout = $parent->add_user($call, Route::here($here), $ip);
1569 $dxchan->tell_buddies('loginb', $call, $ncall) if $dxchan;
1570 my $r = Route::User::get($call);
1573 Log('DXProt', "PC92A $call -> $ip on $ncall");
1576 if ($pc92_slug_changes && $parent == $main::routeroot) {
1577 $things_add{$call} = Route::get($call);
1578 delete $things_del{$call};
1580 $user->close($main::systime, $ip) if $user; # this just updates lastseen and the connlist list containing the IP address
1582 dbgprintring(10) if isdbg('nologchan');
1583 dbg("DXProt::add_thingy: Trying to add parent $call to itself $ncall, ignored");
1595 my ($call, $is_node, $is_extnode, $here, $version, $build) = @$s;
1600 $ref = Route::Node::get($call);
1601 dbg("ROUTE: deleting node $call from " . $parent->call) if isdbg('routelow');
1602 @rout = $ref->del($parent) if $ref;
1604 dbg("ROUTE: deleting user $call from " . $parent->call) if isdbg('routelow');
1605 $ref = Route::User::get($call);
1607 $dxchan->tell_buddies('logoutb', $call, $parent->call) if $dxchan;
1608 @rout = $parent->del_user($ref);
1611 if ($pc92_slug_changes && $parent == $main::routeroot) {
1612 $things_del{$call} = $ref unless exists $things_add{$call};
1613 delete $things_add{$call};
1619 # this will only happen if we are slugging changes and
1620 # there are some changes to be sent, it will create an add or a delete
1622 sub gen_pc92_changes
1624 my @add = values %things_add;
1625 my @del = values %things_del;
1626 return (\@add, \@del);
1629 sub clear_pc92_changes
1631 %things_add = %things_del = ();
1632 $last_pc92_slug = $main::systime;
1641 return $_last_pc9x_id;
1646 if (!$_last_time || $_last_time != $main::systime) {
1647 $_last_time = $main::systime;
1649 return $_last_pc9x_id = $_last_time - $main::systime_daystart;
1652 return $_last_pc9x_id = sprintf "%d.%02d", $_last_time - $main::systime_daystart, $_last_occurs;
1663 # check that the time is between 0 >= $t < 86400
1664 unless ($t >= 0 && $t < 86400) {
1665 dbg("PCPROT: time invalid t: $t, ignored") if isdbg('chanerr');
1669 # check that the time of this pc9x is within tolerance (default 15 mins either way)
1670 my $now = $main::systime - $main::systime_daystart ;
1671 my $diff = abs($now - $t);
1672 unless ($diff < $pc9x_time_tolerance || 86400 - $diff < $pc9x_time_tolerance) {
1673 my $c = ref $call ? $call->call : $call;
1674 dbg("PC9XERR: $c time out of range t: $t now: $now diff: $diff > $pc9x_time_tolerance, ignored") if isdbg('chan');
1678 my $parent = ref $call ? $call : Route::Node::get($call);
1680 # we only do this for external calls whose routing table
1681 # record come and go. The reference for mycall is permanent
1682 # and not that frequently used, it also never times out, so
1683 # the id on it is completely unreliable. Besides, only commands
1684 # originating on this box will go through this code...
1685 if ($parent->call ne $main::mycall) {
1686 my $lastid = $parent->lastid;
1687 if (defined $lastid) {
1689 # note that this is where we determine whether this pc9x has come in yesterday
1690 # but is still greater (modulo 86400) than the lastid or is simply an old
1691 # duplicate sentence. To determine this we need to do some module 86400
1692 # arithmetic. High numbers mean that this is an old duplicate sentence,
1693 # low numbers that it is a new sentence.
1695 # Typically you will see yesterday being taken on $t = 84, $lastid = 86235
1696 # and old dupes with $t = 234, $lastid = 256 (which give answers 249 and
1697 # 86378 respectively in the calculation below).
1699 if ($t+86400-$lastid > $pc9x_past_age) {
1700 dbg("PCPROT: dup id on $t <= lastid $lastid, ignored") if isdbg('chanerr') || isdbg('pc92dedupe');
1703 } elsif ($t == $lastid) {
1704 dbg("PCPROT: dup id on $t == lastid $lastid, ignored") if isdbg('chanerr') || isdbg('pc92dedupe');
1707 # check that if we have a low number in lastid that yesterday's numbers
1708 # (likely in the 85000+ area) don't override them, thus causing flip flopping
1709 if ($lastid+86400-$t < $pc9x_past_age) {
1710 dbg("PCPROT: dup id on $t in yesterday, lastid $lastid, ignored") if isdbg('chanerr') || isdbg('pc92dedupe');
1717 $parent = Route::Node->new($call);
1719 dbg("PCPROT: $call does not exist, ignored") if isdbg('pc92dedupe');
1722 if (isdbg('pc92dedupe')) {
1723 my $exists = exists $parent->{lastid}; # naughty, naughty :-)
1724 my $val = $parent->{lastid};
1725 my $s = $exists ? (defined $val ? $val : 'exists/undef') : 'undef';
1726 dbg("PCPROT: $call pc92 id lastid $s -> $t");
1728 $parent->lastid($t);
1733 sub pc92_handle_first_slot
1740 my $oparent = $parent;
1744 my ($call, $is_node, $is_extnode, $here, $version, $build) = @$slot;
1745 if ($call && $is_node) {
1746 if ($call eq $main::mycall) {
1747 dbg("PCPROT: $call looped back onto \$main::mycall ($main::mycall), ignored") if isdbg('chan');
1750 if ($call eq $main::myalias) {
1751 dbg("PCPROT: $call looped back onto \$main::myalias ($main::myalias), ignored") if isdbg('chan');
1754 # this is only accepted from my "self".
1755 # this also kills configs from PC92 nodes with external PC19 nodes that are also
1756 # locally connected. Local nodes always take precedence. But we remember the lastid
1757 # to try to reduce the number of dupe PC92s for this external node.
1758 if (DXChannel::get($call) && $call ne $self->{call}) {
1759 $parent = check_pc9x_t($call, $t, 92); # this will update the lastid time
1760 dbg("PCPROT: locally connected node $call from other another node $self->{call}, ignored") if isdbg('chanerr');
1764 # reparent to external node (note that we must have received a 'C' or 'A' record
1765 # from the true parent node for this external before we get one for the this node
1766 unless ($parent = Route::Node::get($call)) {
1767 if ($is_extnode && $oparent) {
1768 @radd = _add_thingy($oparent, $slot, $self, $hops);
1771 dbg("PCPROT: no previous C or A for this external node received, ignored") if isdbg('chanerr');
1775 $parent = check_pc9x_t($call, $t, 92) || return;
1776 $parent->via_pc92(1);
1777 $parent->PC92C_dxchan($self->{call}, $hops);
1780 dbg("PCPROT: must be \$mycall or external node as first entry, ignored") if isdbg('chanerr');
1783 $parent->here(Route::here($here));
1784 $parent->version($version || $pc19_version) if $version;
1785 $parent->build($build) if $build;
1786 $parent->PC92C_dxchan($self->{call}, $hops) unless $self->{call} eq $parent->call;
1787 return ($parent, @radd);
1790 # DXSpider routing entries
1801 my $pcall = $pc->[1];
1803 my $sort = $pc->[3];
1804 my $hops = $pc->[-1];
1806 # this catches loops of A/Ds
1807 # if (eph_dup($line, $pc9x_dupe_age)) {
1811 if ($pcall eq $main::mycall) {
1812 dbg("PCPROT: looped back, ignored") if isdbg('chan');
1816 if ($pcall eq $main::myalias) {
1817 dbg("PCPROT: looped back to \$myalias ($main::myalias), misconfiguration ignored") if isdbg('chan');
1821 if ($pcall eq $self->{call} && $self->{state} eq 'init') {
1822 if ($self->{isolate}) {
1823 dbg("DXPROT: PC9x received, but $pcall is isolated, ignored");
1825 } elsif (!$self->user->wantpc9x) {
1826 dbg("DXPROT: PC9x explicitly switched off on $pcall, ignored");
1829 $self->state('init92');
1830 $self->{do_pc9x} = 1;
1831 dbg("DXPROT: Do pc9x set on $pcall");
1834 unless ($self->{do_pc9x}) {
1835 dbg("PCPROT: PC9x come in from non-PC9x node, ignored") if isdbg('chanerr');
1839 # don't create routing entries for D records that don't already exist
1840 # this is what causes all those PC92 loops!
1841 my $parent = check_pc9x_t($pcall, $t, 92, $sort ne 'D') || return;
1842 my $oparent = $parent;
1844 $parent->do_pc9x(1);
1845 $parent->via_pc92(1);
1847 if ($sort eq 'F' || $sort eq 'R') {
1849 # this is the route finding section
1850 # here is where the consequences of the 'find' command
1853 my $from = $pc->[4];
1854 my $target = $pc->[5];
1860 if ($ref = DXChannel::get($target)) {
1861 $flag = 1; # we are directly connected
1863 $ref = Route::get($target);
1864 $dxchan = $ref->dxchan;
1867 if ($ref && $flag && $dxchan) {
1868 $self->send(pc92r($from, $target, $flag, int($dxchan->{pingave}*1000)));
1871 } elsif ($sort eq 'R') {
1872 if (my $dxchan = DXChannel::get($from)) {
1873 handle_pc92_find_reply($dxchan, $pcall, $from, $target, @$pc[6,7]);
1875 my $ref = Route::get($from);
1877 my @dxchan = grep {$_->do_pc9x} $ref->alldxchan;
1879 $_->send($line) for @dxchan;
1881 dbg("PCPROT: no return route, ignored") if isdbg('chanerr')
1884 dbg("PCPROT: no return route, ignored") if isdbg('chanerr')
1890 } elsif ($sort eq 'K') {
1891 $pc92Kin += length $line;
1893 # remember the last channel we arrived on
1894 $parent->PC92C_dxchan($self->{call}, $hops) unless $self->{call} eq $parent->call;
1896 my @ent = _decode_pc92_call($pc->[4]);
1901 ($parent, $add) = $self->pc92_handle_first_slot(\@ent, $parent, $t, $hops);
1902 return unless $parent; # dupe
1904 push @radd, $add if $add;
1906 $parent->version($ent[4]) if $ent[4];
1909 $parent->build($ent[5]);
1912 dbg("ROUTE: reset obscount on $parent->{call} now " . $parent->obscount) if isdbg('obscount');
1914 } elsif ($sort eq 'A' || $sort eq 'D' || $sort eq 'C') {
1916 $pc92Ain += length $line if $sort eq 'A';
1917 $pc92Cin += length $line if $sort eq 'C';
1918 $pc92Din += length $line if $sort eq 'D';
1920 # remember the last channel we arrived on
1921 $parent->PC92C_dxchan($self->{call}, $hops) unless $self->{call} eq $parent->call;
1923 # this is the main route section
1924 # here is where all the routes are created and destroyed
1926 # cope with missing duplicate node calls in the first slot
1927 my $me = $pc->[4] || '';
1928 $me ||= _encode_pc92_call($parent) unless $me ;
1930 my @ent = map {my @a = _decode_pc92_call($_); @a ? \@a : ()} grep {$_ && /^[0-7]/} $me, @$pc[5 .. $#$pc];
1934 # look at the first one which will always be a node of some sort
1935 # except in the case of 'A' or 'D' in which the $pcall is used
1936 # otherwise use the node call and update any information
1937 # that needs to be done.
1940 ($parent, $add) = $self->pc92_handle_first_slot($ent[0], $parent, $t, $hops);
1941 return unless $parent; # dupe
1944 push @radd, $add if $add;
1947 # do a pass through removing any references to either mycall
1951 next unless $_ && @$_;
1952 if ($_->[0] eq $main::mycall) {
1953 dbg("PCPROT: $_->[0] refers to me, ignored") if isdbg('chanerr');
1961 push @radd, _add_thingy($parent, $_, $self, $hops);
1963 } elsif ($sort eq 'D') {
1965 push @rdel, _del_thingy($parent, $_, $self);
1967 } elsif ($sort eq 'C') {
1968 my (@nodes, @users);
1970 # we reset obscounts on config records as well as K records
1972 dbg("ROUTE: reset obscount on $parent->{call} now " . $parent->obscount) if isdbg('obscount');
1975 foreach my $r (@nent) {
1976 # my ($call, $is_node, $is_extnode, $here, $version, $build) = _decode_pc92_call($_);
1979 push @nodes, $r->[0];
1981 push @users, $r->[0];
1984 dbg("PCPROT: pc92 call entry '$_' not decoded, ignored") if isdbg('chanerr');
1988 my ($dnodes, $dusers, $nnodes, $nusers) = $parent->calc_config_changes(\@nodes, \@users);
1991 foreach my $r (@nent) {
1994 push @radd,_add_thingy($parent, $r, $self, $hops) if grep $call eq $_, (@$nnodes, @$nusers);
1998 foreach my $r (@$dnodes) {
1999 push @rdel,_del_thingy($parent, [$r, 1], $self);
2001 foreach my $r (@$dusers) {
2002 push @rdel,_del_thingy($parent, [$r, 0], $self);
2005 # remember this last PC92C for rebroadcast on demand
2006 $parent->last_PC92C($line);
2008 dbg("PCPROT: unknown action '$sort', ignored") if isdbg('chanerr');
2012 foreach my $r (@rdel) {
2015 $self->route_pc21($pcall, undef, $r) if $r->isa('Route::Node');
2016 $self->route_pc17($pcall, undef, $parent, $r) if $r->isa('Route::User');
2018 my @pc19 = grep { $_ && $_->isa('Route::Node') } @radd;
2019 my @pc16 = grep { $_ && $_->isa('Route::User') } @radd;
2020 unshift @pc19, $parent if $self->{state} eq 'init92' && $oparent == $parent;
2021 $self->route_pc19($pcall, undef, @pc19) if @pc19;
2022 $self->route_pc16($pcall, undef, $parent, @pc16) if @pc16;
2025 # broadcast it if we get here
2026 $self->broadcast_route_pc9x($pcall, undef, $line, 0);
2029 # get all the routes for a thing, bearing in mind that the thing (e.g. a user)
2030 # might be on two or more nodes at the same time or that there may be more than
2031 # one equal distance neighbour to a node.
2033 # What this means that if sh/route g1tlh shows that he is on (say) two nodes, then
2034 # a Route::findroutes is done on each of those two nodes, the best route(s) taken from
2035 # each and then combined to give a set of dxchans to send the PC9x record down
2037 sub find_pc9x_routes
2040 my $ref = Route::get($to);
2044 if ($ref->isa('Route::User')) {
2045 my $dxchan = DXChannel::get($to);
2046 push @parent, $to if $dxchan;
2047 push @parent, $ref->parents;
2051 foreach my $p (@parent) {
2053 my @routes = Route::findroutes($p);
2054 foreach my $r (@routes) {
2055 $lasthops = $r->[0] unless defined $lasthops;
2056 if ($r->[0] == $lasthops) {
2057 $cand{$r->[1]->call} = $r->[1];
2063 return values %cand;
2074 # $self->{do_pc9x} ||= 1;
2076 my $pcall = $pc->[1]; # this is now checked earlier
2078 # remember that we are converting PC10->PC93 and self will be $main::me if it
2080 unless ($self->{do_pc9x}) {
2081 dbg("PCPROT: PC9x come in from non-PC9x node, ignored") if isdbg('chanerr');
2086 my $parent = check_pc9x_t($pcall, $t, 93, 1) || return;
2088 my $to = uc $pc->[3];
2089 my $from = uc $pc->[4];
2090 my $via = uc $pc->[5];
2091 my $text = $pc->[6];
2092 my $onode = uc $pc->[7];
2093 $onode = $pcall if @$pc <= 8;
2095 # this is catch loops caused by bad software ...
2096 if (eph_dup("PC93|$from|$text|$onode", $pc10_dupe_age)) {
2100 if (isdbg('progress')) {
2101 my $vs = $via ne '*' ? " via $via" : '';
2102 my $s = "ANNTALK: $from\@$onode$vs -> $to '$text' route: $origin";
2106 # will we allow it at all?
2109 if (@bad = BadWords::check($text)) {
2110 dbg("PCPROT: Bad words: @bad, dropped") if isdbg('chanerr');
2115 # if this is a 'bad spotter' user then ignore it
2117 $nossid =~ s/-\d+$//;
2118 if ($badspotter->in($nossid)) {
2119 dbg("PCPROT: Bad Spotter, dropped") if isdbg('chanerr');
2123 # ignore PC93 coming in from outside this node with a target of local
2124 if ($to eq 'LOCAL' && $self != $main::me) {
2125 dbg("PCPROT: incoming LOCAL chat not from local node, ignored") if isdbg('chanerr');
2129 # if it is routeable then then treat it like a talk
2130 my $ref = Route::get($to);
2134 # convert to PC10 or local talks where appropriate
2135 # PC93 capable nodes of the same hop count all get a copy
2136 # if there is a PC10 node then it will get a copy and that
2137 # will be it. Hopefully such a node will not figure highly
2138 # in the route list, unless it is local, 'cos it don't issue PC92s!
2139 # note that both local and PC93s at the same time are possible if the
2140 # user on more than one node.
2141 my @routes = find_pc9x_routes($to);
2143 foreach $dxchan (@routes) {
2144 if (ref $dxchan && $dxchan->isa('DXChannel')) {
2145 if ($dxchan->{do_pc9x}) {
2146 $dxchan->send($line);
2148 $dxchan->talk($from, $to, $via, $text, $onode);
2151 dbg("ERROR: $to -> $dxchan is not a DXChannel! (convert to pc10)");
2156 } elsif ($to eq '*' || $to eq 'SYSOP' || $to eq 'WX') {
2158 my $sysop = $to eq 'SYSOP' ? '*' : ' ';
2159 my $wx = $to eq 'WX' ? '1' : '0';
2160 my $local = $via eq 'LOCAL' ? '*' : $via;
2162 $self->send_announce(1, pc12($from, $text, $local, $sysop, $wx, $pcall), $from, $local, $text, $sysop, $pcall, $wx, $via eq 'LOCAL' ? $via : undef);
2163 return if $via eq 'LOCAL';
2164 } elsif (!is_callsign($to) && $text =~ /^#\d+ /) {
2165 # chat messages really only locally connected users
2166 $self->send_chat(1, $line, $from, '*', $text, $to, $pcall, '0');
2169 # broadcast this chat sentence everywhere unless it is targetted to 'LOCAL'
2170 $self->broadcast_route_pc9x($pcall, undef, $line, 0) unless $to eq 'LOCAL' || $via eq 'LOCAL';
2173 # if get here then rebroadcast the thing with its Hop count decremented (if
2174 # there is one). If it has a hop count and it decrements to zero then don't
2177 # NOTE - don't arrive here UNLESS YOU WANT this lump of protocol to be
2189 unless (eph_dup($line)) {
2191 my $pcall = $pc->[1];
2192 unless (is_callsign($pcall)) {
2193 dbg("PCPROT: invalid callsign string '$pc->[1]', ignored") if isdbg('chanerr');
2197 my $parent = check_pc9x_t($pcall, $t, $pcno, 1) || return;
2198 $self->broadcast_route_pc9x($pcall, undef, $line, 0);
2200 unless ($self->{isolate}) {
2201 DXChannel::broadcast_nodes($line, $self) if $line =~ /\^H\d+\^?~?$/; # send it to everyone but me