+sub normal
+{
+ my ($self, $line) = @_;
+
+ # remove any incoming PC90 frames
+ removepc90($line);
+
+ my @field = split /\^/, $line;
+ return unless @field;
+
+ pop @field if $field[-1] eq '~';
+
+# print join(',', @field), "\n";
+
+
+ # process PC frames, this will fail unless the frame starts PCnn
+ my ($pcno) = $field[0] =~ /^PC(\d\d)/; # just get the number
+ unless (defined $pcno && $pcno >= 10 && $pcno <= 99) {
+ dbg("PCPROT: unknown protocol") if isdbg('chanerr');
+ return;
+ }
+
+ # check for and dump bad protocol messages
+ my $n = check($pcno, @field);
+ if ($n) {
+ dbg("PCPROT: bad field $n, dumped (" . parray($checklist[$pcno-10]) . ")") if isdbg('chanerr');
+ return;
+ }
+
+ my $origin = $self->{call};
+ no strict 'subs';
+ my $sub = "handle_$pcno";
+
+ if ($self->can($sub)) {
+ $self->$sub($pcno, $line, $origin, @field);
+ } else {
+ $self->handle_default($pcno, $line, $origin, @field);
+ }
+}
+
+# incoming talk commands
+sub handle_10
+{
+ my $self = shift;
+ my $pcno = shift;
+ my $line = shift;
+ my $origin = shift;
+
+ # rsfp check
+ return if $rspfcheck and !$self->rspfcheck(0, $_[6], $_[1]);
+
+ # will we allow it at all?
+ if ($censorpc) {
+ my @bad;
+ if (@bad = BadWords::check($_[3])) {
+ dbg("PCPROT: Bad words: @bad, dropped") if isdbg('chanerr');
+ return;
+ }
+ }
+
+ # is it for me or one of mine?
+ my ($from, $to, $via, $call, $dxchan);
+ $from = $_[1];
+ if ($_[5] gt ' ') {
+ $via = $_[2];
+ $to = $_[5];
+ } else {
+ $to = $_[2];
+ }
+
+ # if this is a 'nodx' node then ignore it
+ if ($badnode->in($_[6]) || ($via && $badnode->in($via))) {
+ dbg("PCPROT: Bad Node, dropped") if isdbg('chanerr');
+ return;
+ }
+
+ # if this is a 'bad spotter' user then ignore it
+ my $nossid = $from;
+ $nossid =~ s/-\d+$//;
+ if ($badspotter->in($nossid)) {
+ dbg("PCPROT: Bad Spotter, dropped") if isdbg('chanerr');
+ return;
+ }
+
+ # if we are converting announces to talk is it a dup?
+ if ($ann_to_talk) {
+ if (AnnTalk::is_talk_candidate($from, $_[3]) && AnnTalk::dup($from, $to, $_[3])) {
+ dbg("DXPROT: Dupe talk from announce, dropped") if isdbg('chanerr');
+ return;
+ }
+ }
+
+ # remember a route to this node and also the node on which this user is
+ RouteDB::update($_[6], $self->{call});
+# RouteDB::update($to, $_[6]);
+
+ # it is here and logged on
+ $dxchan = DXChannel->get($main::myalias) if $to eq $main::mycall;
+ $dxchan = DXChannel->get($to) unless $dxchan;
+ if ($dxchan && $dxchan->is_user) {
+ $_[3] =~ s/\%5E/^/g;
+ $dxchan->talk($from, $to, $via, $_[3]);
+ return;
+ }
+
+ # is it elsewhere, visible on the cluster via the to address?
+ # note: this discards the via unless the to address is on
+ # the via address
+ my ($ref, $vref);
+ if ($ref = Route::get($to)) {
+ $vref = Route::Node::get($via) if $via;
+ $vref = undef unless $vref && grep $to eq $_, $vref->users;
+ $ref->dxchan->talk($from, $to, $vref ? $via : undef, $_[3], $_[6]);
+ return;
+ }
+
+ # can we see an interface to send it down?
+
+ # not visible here, send a message of condolence
+ $vref = undef;
+ $ref = Route::get($from);
+ $vref = $ref = Route::Node::get($_[6]) unless $ref;
+ if ($ref) {
+ $dxchan = $ref->dxchan;
+ $dxchan->talk($main::mycall, $from, $vref ? $vref->call : undef, $dxchan->msg('talknh', $to) );
+ }
+}
+
+# DX Spot handling
+sub handle_11
+{
+ my $self = shift;
+ my $pcno = shift;
+ my $line = shift;
+ my $origin = shift;
+
+ # route 'foreign' pc26s
+ if ($pcno == 26) {
+ if ($_[7] ne $main::mycall) {
+ $self->route($_[7], $line);
+ return;
+ }
+ }
+
+ # rsfp check
+ # return if $rspfcheck and !$self->rspfcheck(1, $_[7], $_[6]);
+
+ # if this is a 'nodx' node then ignore it
+ if ($badnode->in($_[7])) {
+ dbg("PCPROT: Bad Node, dropped") if isdbg('chanerr');
+ return;
+ }
+
+ # if this is a 'bad spotter' user then ignore it
+ my $nossid = $_[6];
+ $nossid =~ s/-\d+$//;
+ if ($badspotter->in($nossid)) {
+ dbg("PCPROT: Bad Spotter, dropped") if isdbg('chanerr');
+ return;
+ }
+
+ # convert the date to a unix date
+ my $d = cltounix($_[3], $_[4]);
+ # bang out (and don't pass on) if date is invalid or the spot is too old (or too young)
+ if (!$d || ($pcno == 11 && ($d < $main::systime - $pc11_max_age || $d > $main::systime + 900))) {
+ dbg("PCPROT: Spot ignored, invalid date or out of range ($_[3] $_[4])\n") if isdbg('chanerr');
+ return;
+ }
+
+ # is it 'baddx'
+ if ($baddx->in($_[2]) || BadWords::check($_[2]) || $_[2] =~ /COCK/) {
+ dbg("PCPROT: Bad DX spot, ignored") if isdbg('chanerr');
+ return;
+ }
+
+ # do some de-duping
+ $_[5] =~ s/^\s+//; # take any leading blanks off
+ $_[2] = unpad($_[2]); # take off leading and trailing blanks from spotted callsign
+ if ($_[2] =~ /BUST\w*$/) {
+ dbg("PCPROT: useless 'BUSTED' spot") if isdbg('chanerr');
+ return;
+ }
+ if ($censorpc) {
+ my @bad;
+ if (@bad = BadWords::check($_[5])) {
+ dbg("PCPROT: Bad words: @bad, dropped") if isdbg('chanerr');
+ return;
+ }
+ }
+
+ # remember a route
+# RouteDB::update($_[7], $self->{call});
+# RouteDB::update($_[6], $_[7]);
+
+ my @spot = Spot::prepare($_[1], $_[2], $d, $_[5], $nossid, $_[7]);
+ # global spot filtering on INPUT
+ if ($self->{inspotsfilter}) {
+ my ($filter, $hops) = $self->{inspotsfilter}->it(@spot);
+ unless ($filter) {
+ dbg("PCPROT: Rejected by input spot filter") if isdbg('chanerr');
+ return;
+ }
+ }
+
+ # this goes after the input filtering, but before the add
+ # so that if it is input filtered, it isn't added to the dup
+ # list. This allows it to come in from a "legitimate" source
+ if (Spot::dup(@spot[0..4])) {
+ dbg("PCPROT: Duplicate Spot ignored\n") if isdbg('chanerr');
+ return;
+ }
+
+ # add it
+ Spot::add(@spot);
+
+ #
+ # @spot at this point contains:-
+ # freq, spotted call, time, text, spotter, spotted cc, spotters cc, orig node
+ # then spotted itu, spotted cq, spotters itu, spotters cq
+ # you should be able to route on any of these
+ #
+
+ # fix up qra locators of known users
+ my $user = DXUser->get_current($spot[4]);
+ if ($user) {
+ my $qra = $user->qra;
+ unless ($qra && is_qra($qra)) {
+ my $lat = $user->lat;
+ my $long = $user->long;
+ if (defined $lat && defined $long) {
+ $user->qra(DXBearing::lltoqra($lat, $long));
+ $user->put;
+ }
+ }
+
+ # send a remote command to a distant cluster if it is visible and there is no
+ # qra locator and we havn't done it for a month.
+
+ unless ($user->qra) {
+ my $node;
+ my $to = $user->homenode;
+ my $last = $user->lastoper || 0;
+ if ($send_opernam && $to && $to ne $main::mycall && $main::systime > $last + $DXUser::lastoperinterval && ($node = Route::Node::get($to)) ) {
+ my $cmd = "forward/opernam $spot[4]";
+ # send the rcmd but we aren't interested in the replies...
+ my $dxchan = $node->dxchan;
+ if ($dxchan && $dxchan->is_clx) {
+ route(undef, $to, pc84($main::mycall, $to, $main::mycall, $cmd));
+ } else {
+ route(undef, $to, pc34($main::mycall, $to, $cmd));
+ }
+ if ($to ne $_[7]) {
+ $to = $_[7];
+ $node = Route::Node::get($to);
+ if ($node) {
+ $dxchan = $node->dxchan;
+ if ($dxchan && $dxchan->is_clx) {
+ route(undef, $to, pc84($main::mycall, $to, $main::mycall, $cmd));
+ } else {
+ route(undef, $to, pc34($main::mycall, $to, $cmd));
+ }
+ }
+ }
+ $user->lastoper($main::systime);
+ $user->put;
+ }
+ }
+ }
+
+ # local processing
+ my $r;
+ eval {
+ $r = Local::spot($self, @spot);
+ };
+ # dbg("Local::spot1 error $@") if isdbg('local') if $@;
+ return if $r;
+
+ # DON'T be silly and send on PC26s!
+ return if $pcno == 26;
+
+ # send out the filtered spots
+ send_dx_spot($self, $line, @spot) if @spot;
+}
+
+# announces
+sub handle_12
+{
+ my $self = shift;
+ my $pcno = shift;
+ my $line = shift;
+ my $origin = shift;
+
+ # return if $rspfcheck and !$self->rspfcheck(1, $_[5], $_[1]);
+
+ # announce duplicate checking
+ $_[3] =~ s/^\s+//; # remove leading blanks
+
+ if ($censorpc) {
+ my @bad;
+ if (@bad = BadWords::check($_[3])) {
+ dbg("PCPROT: Bad words: @bad, dropped") if isdbg('chanerr');
+ return;
+ }
+ }
+
+ # if this is a 'nodx' node then ignore it
+ if ($badnode->in($_[5])) {
+ dbg("PCPROT: Bad Node, dropped") if isdbg('chanerr');
+ return;
+ }
+
+ # if this is a 'bad spotter' user then ignore it
+ my $nossid = $_[1];
+ $nossid =~ s/-\d+$//;
+ if ($badspotter->in($nossid)) {
+ dbg("PCPROT: Bad Spotter, dropped") if isdbg('chanerr');
+ return;
+ }
+
+
+ my $dxchan;
+
+ if ((($dxchan = DXChannel->get($_[2])) && $dxchan->is_user) || $_[4] =~ /^[\#\w.]+$/){
+ $self->send_chat($line, @_[1..6]);
+ } elsif ($_[2] eq '*' || $_[2] eq $main::mycall) {
+
+ # remember a route
+# RouteDB::update($_[5], $self->{call});
+# RouteDB::update($_[1], $_[5]);
+
+ # ignore something that looks like a chat line coming in with sysop
+ # flag - this is a kludge...
+ if ($_[3] =~ /^\#\d+ / && $_[4] eq '*') {
+ dbg('PCPROT: Probable chat rewrite, dropped') if isdbg('chanerr');
+ return;
+ }
+
+ # here's a bit of fun, convert incoming ann with a callsign in the first word
+ # or one saying 'to <call>' to a talk if we can route to the recipient
+ if ($ann_to_talk) {
+ my $call = AnnTalk::is_talk_candidate($_[1], $_[3]);
+ if ($call) {
+ my $ref = Route::get($call);
+ if ($ref) {
+ $dxchan = $ref->dxchan;
+ $dxchan->talk($_[1], $call, undef, $_[3], $_[5]) if $dxchan != $self;
+ return;
+ }
+ }
+ }
+
+ # send it
+ $self->send_announce($line, @_[1..6]);
+ } else {
+ $self->route($_[2], $line);
+ }
+}
+
+# incoming user
+sub handle_16
+{
+ my $self = shift;
+ my $pcno = shift;
+ my $line = shift;
+ my $origin = shift;
+
+ # general checks
+ my $dxchan;
+ my $ncall = $_[1];
+ my $newline = "PC16^";
+
+ # dos I want users from this channel?
+ unless ($self->user->wantpc16) {
+ dbg("PCPROT: don't send users to $self->{call}") if isdbg('chanerr');
+ return;
+ }
+ # is it me?
+ if ($ncall eq $main::mycall) {
+ dbg("PCPROT: trying to alter config on this node from outside!") if isdbg('chanerr');
+ return;
+ }
+
+ RouteDB::update($ncall, $self->{call});
+
+ # do we believe this call?
+ unless ($ncall eq $self->{call} || $self->is_believed($ncall)) {
+ if (my $ivp = Investigate::get($ncall, $self->{call})) {
+ $ivp->store_pcxx($pcno,$line,$origin,@_);
+ } else {
+ dbg("PCPROT: We don't believe $ncall on $self->{call}") if isdbg('chanerr');
+ }
+ return;
+ }
+
+ if (eph_dup($line)) {
+ dbg("PCPROT: dup PC16 detected") if isdbg('chanerr');
+ return;
+ }
+
+ my $parent = Route::Node::get($ncall);
+
+ # if there is a parent, proceed, otherwise if there is a latent PC19 in the PC19list,
+ # fix it up in the routing tables and issue it forth before the PC16
+ unless ($parent) {
+ my $nl = $pc19list{$ncall};
+
+ if ($nl && @_ > 3) { # 3 because of the hop count!
+
+ # this is a new (remembered) node, now attach it to me if it isn't in filtered
+ # and we haven't disallowed it
+ my $user = DXUser->get_current($ncall);
+ if (!$user) {
+ $user = DXUser->new($ncall);
+ $user->sort('A');
+ $user->priv(1); # I have relented and defaulted nodes
+ $user->lockout(1);
+ $user->homenode($ncall);
+ $user->node($ncall);
+ }
+
+ my $wantpc19 = $user->wantroutepc19;
+ if ($wantpc19 || !defined $wantpc19) {
+ my $new = Route->new($ncall); # throw away
+ if ($self->in_filter_route($new)) {
+ my @nrout;
+ for (@$nl) {
+ $parent = Route::Node::get($_->[0]);
+ $dxchan = $parent->dxchan if $parent;
+ if ($dxchan && $dxchan ne $self) {
+ dbg("PCPROT: PC19 from $self->{call} trying to alter locally connected $ncall, ignored!") if isdbg('chanerr');
+ $parent = undef;
+ }
+ if ($parent) {
+ my $r = $parent->add($ncall, $_->[1], $_->[2]);
+ push @nrout, $r unless @nrout;
+ }
+ }
+ $user->wantroutepc19(1) unless defined $wantpc19; # for now we work on the basis that pc16 = real route
+ $user->lastin($main::systime) unless DXChannel->get($ncall);
+ $user->put;
+
+ # route the pc19 - this will cause 'stuttering PC19s' for a while
+ $self->route_pc19($origin, $line, @nrout) if @nrout ;
+ $parent = Route::Node::get($ncall);
+ unless ($parent) {
+ dbg("PCPROT: lost $ncall after sending PC19 for it?");
+ return;
+ }
+ } else {
+ return;
+ }
+ delete $pc19list{$ncall};
+ }
+ } else {
+ dbg("PCPROT: Node $ncall not in config") if isdbg('chanerr');
+ return;
+ }
+ } else {
+
+ $dxchan = $parent->dxchan;
+ if ($dxchan && $dxchan ne $self) {
+ dbg("PCPROT: PC16 from $self->{call} trying to alter locally connected $ncall, ignored!") if isdbg('chanerr');
+ return;
+ }
+
+ # input filter if required
+ return unless $self->in_filter_route($parent);
+ }
+
+ my $i;
+ my @rout;
+ for ($i = 2; $i < $#_; $i++) {
+ my ($call, $conf, $here) = $_[$i] =~ /^(\S+) (\S) (\d)/o;
+ next unless $call && $conf && defined $here && is_callsign($call);
+ next if $call eq $main::mycall;
+
+ eph_del_regex("^PC17\\^$call\\^$ncall");
+
+ $conf = $conf eq '*';
+
+ # reject this if we think it is a node already
+ my $r = Route::Node::get($call);
+ my $u = DXUser->get_current($call) unless $r;
+ if ($r || ($u && $u->is_node)) {
+ dbg("PCPROT: $call is a node") if isdbg('chanerr');
+ next;
+ }
+
+ $r = Route::User::get($call);
+ my $flags = Route::here($here)|Route::conf($conf);
+
+ if ($r) {
+ my $au = $r->addparent($parent);
+ if ($r->flags != $flags) {
+ $r->flags($flags);
+ $au = $r;
+ }
+ push @rout, $r if $au;
+ } else {
+ push @rout, $parent->add_user($call, $flags);
+ }
+
+
+ # add this station to the user database, if required
+ $call =~ s/-\d+$//o; # remove ssid for users
+ my $user = DXUser->get_current($call);
+ $user = DXUser->new($call) if !$user;
+ $user->homenode($parent->call) if !$user->homenode;
+ $user->node($parent->call);
+ $user->lastin($main::systime) unless DXChannel->get($call);
+ $user->put;
+ }
+ $self->route_pc16($origin, $line, $parent, @rout) if @rout;
+}
+
+# remove a user
+sub handle_17
+{
+ my $self = shift;
+ my $pcno = shift;
+ my $line = shift;
+ my $origin = shift;
+ my $dxchan;
+ my $ncall = $_[2];
+ my $ucall = $_[1];
+
+ eph_del_regex("^PC16\\^$ncall.*$ucall");
+
+ # do I want users from this channel?
+ unless ($self->user->wantpc16) {
+ dbg("PCPROT: don't send users to $self->{call}") if isdbg('chanerr');
+ return;
+ }
+ if ($ncall eq $main::mycall) {
+ dbg("PCPROT: trying to alter config on this node from outside!") if isdbg('chanerr');
+ return;
+ }
+
+ RouteDB::delete($ncall, $self->{call});
+
+ # do we believe this call?
+ unless ($ncall eq $self->{call} || $self->is_believed($ncall)) {
+ if (my $ivp = Investigate::get($ncall, $self->{call})) {
+ $ivp->store_pcxx($pcno,$line,$origin,@_);
+ } else {
+ dbg("PCPROT: We don't believe $ncall on $self->{call}") if isdbg('chanerr');
+ }
+ return;
+ }
+
+ my $uref = Route::User::get($ucall);
+ unless ($uref) {
+ dbg("PCPROT: Route::User $ucall not in config") if isdbg('chanerr');
+ }
+ my $parent = Route::Node::get($ncall);
+ unless ($parent) {
+ dbg("PCPROT: Route::Node $ncall not in config") if isdbg('chanerr');
+ }
+
+ $dxchan = $parent->dxchan if $parent;
+ if ($dxchan && $dxchan ne $self) {
+ dbg("PCPROT: PC17 from $self->{call} trying to alter locally connected $ncall, ignored!") if isdbg('chanerr');
+ return;
+ }
+
+ # input filter if required and then remove user if present
+ if ($parent) {
+# return unless $self->in_filter_route($parent);
+ $parent->del_user($uref) if $uref;
+ } else {
+ $parent = Route->new($ncall); # throw away
+ }
+
+ if (eph_dup($line)) {
+ dbg("PCPROT: dup PC17 detected") if isdbg('chanerr');
+ return;
+ }
+
+ $uref = Route->new($ucall) unless $uref; # throw away
+ $self->route_pc17($origin, $line, $parent, $uref);
+}
+
+# link request
+sub handle_18
+{
+ my $self = shift;
+ my $pcno = shift;
+ my $line = shift;
+ my $origin = shift;
+ $self->state('init');
+
+ # record the type and version offered
+ if ($_[1] =~ /DXSpider Version: (\d+\.\d+) Build: (\d+\.\d+)/) {
+ $self->version(53 + $1);
+ $self->user->version(53 + $1);
+ $self->build(0 + $2);
+ $self->user->build(0 + $2);
+ unless ($self->is_spider) {
+ $self->user->sort('S');
+ $self->user->put;
+ $self->sort('S');
+ }
+ } else {
+ $self->version(50.0);
+ $self->version($_[2] / 100) if $_[2] && $_[2] =~ /^\d+$/;
+ $self->user->version($self->version);
+ }
+
+ # first clear out any nodes on this dxchannel
+ my $parent = Route::Node::get($self->{call});
+ my @rout = $parent->del_nodes;
+ $self->route_pc21($origin, $line, @rout, $parent) if @rout;
+ $self->send_local_config();
+ $self->send(pc20());
+}
+
+# incoming cluster list
+sub handle_19
+{
+ my $self = shift;
+ my $pcno = shift;
+ my $line = shift;
+ my $origin = shift;
+
+ my $i;
+ my $newline = "PC19^";
+
+ # new routing list
+ my @rout;
+
+ # first get the INTERFACE node
+ my $parent = Route::Node::get($self->{call});
+ unless ($parent) {
+ dbg("DXPROT: my parent $self->{call} has disappeared");
+ $self->disconnect;
+ return;
+ }
+
+ # if the origin isn't the same as the INTERFACE, then reparent, creating nodes as necessary
+ if ($origin ne $self->call) {
+ my $op = Route::Node::get($origin);
+ unless ($op) {
+ $op = $parent->add($origin, 5000, Route::here(1));
+ my $user = DXUser->get_current($origin);
+ if (!$user) {
+ $user = DXUser->new($origin);
+ $user->priv(1); # I have relented and defaulted nodes
+ $user->lockout(1);
+ $user->homenode($origin);
+ $user->node($origin);
+ $user->wantroutepc19(1);
+ }
+ $user->sort('A') unless $user->is_node;
+ $user->put;
+ }
+ $parent = $op;
+ }
+
+ # parse the PC19
+ for ($i = 1; $i < $#_-1; $i += 4) {
+ my $here = $_[$i];
+ my $call = uc $_[$i+1];
+ my $conf = $_[$i+2];
+ my $ver = $_[$i+3];
+ next unless defined $here && defined $conf && is_callsign($call);
+
+ eph_del_regex("^PC(?:21\\^$call|17\\^[^\\^]+\\^$call)");
+
+ # check for sane parameters
+ # $ver = 5000 if $ver eq '0000';
+ next if $ver < 5000; # only works with version 5 software
+ next if length $call < 3; # min 3 letter callsigns
+ next if $call eq $main::mycall;
+
+ # check that this PC19 isn't trying to alter the wrong dxchan
+ my $dxchan = DXChannel->get($call);
+ if ($dxchan && $dxchan != $self) {
+ dbg("PCPROT: PC19 from $self->{call} trying to alter wrong locally connected $call, ignored!") if isdbg('chanerr');
+ next;
+ }
+
+ # add this station to the user database, if required (don't remove SSID from nodes)
+ my $user = DXUser->get_current($call);
+ if (!$user) {
+ $user = DXUser->new($call);
+ $user->priv(1); # I have relented and defaulted nodes
+ $user->lockout(1);
+ $user->homenode($call);
+ $user->node($call);
+ }
+ $user->sort('A') unless $user->is_node;
+
+ RouteDB::update($call, $self->{call});
+
+ # do we believe this call?
+ my $genline = "PC19^$here^$call^$conf^$ver^$_[-1]^";
+ unless ($call eq $self->{call} || $self->is_believed($call)) {
+ my $pt = $user->lastping($self->{call}) || 0;
+ if ($pt+$investigation_int < $main::systime && !Investigate::get($call, $self->{call})) {
+ my $ivp = Investigate->new($call, $self->{call});
+ $ivp->version($ver);
+ $ivp->here($here);
+ $ivp->store_pcxx($pcno,$genline,$origin,'PC19',$here,$call,$conf,$ver,$_[-1]);
+ } else {
+ dbg("PCPROT: We don't believe $call on $self->{call}") if isdbg('chanerr');
+ }
+ $user->put;
+ next;
+ }
+
+ if (eph_dup($genline)) {
+ dbg("PCPROT: dup PC19 for $call detected") if isdbg('chanerr');
+ next;
+ }
+
+ my $r = Route::Node::get($call);
+ my $flags = Route::here($here)|Route::conf($conf);
+
+ # modify the routing table if it is in it, otherwise store it in the pc19list for now
+ if ($r) {
+ my $ar;
+ if ($call ne $parent->call) {
+ if ($self->in_filter_route($r)) {
+ $ar = $parent->add($call, $ver, $flags);
+ push @rout, $ar if $ar;
+ } else {
+ next;
+ }
+ }
+ if ($r->version ne $ver || $r->flags != $flags) {
+ $r->version($ver);
+ $r->flags($flags);
+ push @rout, $r unless $ar;
+ }
+ } else {
+
+ # if he is directly connected or allowed then add him, otherwise store him up for later
+ if ($call eq $self->{call} || $user->wantroutepc19) {
+ my $new = Route->new($call); # throw away
+ if ($self->in_filter_route($new)) {
+ my $ar = $parent->add($call, $ver, $flags);
+ $user->wantroutepc19(1) unless defined $user->wantroutepc19;
+ push @rout, $ar if $ar;
+ } else {
+ next;
+ }
+ } else {
+ $pc19list{$call} = [] unless exists $pc19list{$call};
+ my $nl = $pc19list{$call};
+ push @{$pc19list{$call}}, [$self->{call}, $ver, $flags] unless grep $_->[0] eq $self->{call}, @$nl;
+ }
+ }
+
+ # unbusy and stop and outgoing mail (ie if somehow we receive another PC19 without a disconnect)
+ my $mref = DXMsg::get_busy($call);
+ $mref->stop_msg($call) if $mref;
+
+ $user->lastin($main::systime) unless DXChannel->get($call);
+ $user->put;
+ }
+
+
+ $self->route_pc19($origin, $line, @rout) if @rout;
+}
+
+# send local configuration
+sub handle_20
+{
+ my $self = shift;
+ my $pcno = shift;
+ my $line = shift;
+ my $origin = shift;
+ $self->send_local_config();
+ $self->send(pc22());
+ $self->state('normal');
+ $self->{lastping} = 0;
+}
+
+# delete a cluster from the list
+sub handle_21
+{
+ my $self = shift;
+ my $pcno = shift;
+ my $line = shift;
+ my $origin = shift;
+ my $call = uc $_[1];
+
+ eph_del_regex("^PC1[679].*$call");
+
+ # if I get a PC21 from the same callsign as self then treat it
+ # as a PC39: I have gone away
+ if ($call eq $self->call) {
+ $self->disconnect(1);
+ return;
+ }
+
+ RouteDB::delete($call, $self->{call});
+
+ # check if we believe this
+ unless ($call eq $self->{call} || $self->is_believed($call)) {
+ if (my $ivp = Investigate::get($call, $self->{call})) {
+ $ivp->store_pcxx($pcno,$line,$origin,@_);
+ } else {
+ dbg("PCPROT: We don't believe $call on $self->{call}") if isdbg('chanerr');
+ }
+ return;
+ }
+
+ # check to see if we are in the pc19list, if we are then don't bother with any of
+ # this routing table manipulation, just remove it from the list and dump it
+ my @rout;
+ if (my $nl = $pc19list{$call}) {
+ $pc19list{$call} = [ grep {$_->[0] ne $self->{call}} @$nl ];
+ delete $pc19list{$call} unless @{$pc19list{$call}};
+ } else {
+
+ my $parent = Route::Node::get($self->{call});
+ unless ($parent) {
+ dbg("DXPROT: my parent $self->{call} has disappeared");
+ $self->disconnect;
+ return;
+ }
+ if ($call ne $main::mycall) { # don't allow malicious buggers to disconnect me!
+ my $node = Route::Node::get($call);
+ if ($node) {
+
+ my $dxchan = DXChannel->get($call);
+ if ($dxchan && $dxchan != $self) {
+ dbg("PCPROT: PC21 from $self->{call} trying to alter locally connected $call, ignored!") if isdbg('chanerr');
+ return;
+ }
+
+ # input filter it
+ return unless $self->in_filter_route($node);
+
+ # routing objects
+ push @rout, $node->del($parent);
+ }
+ } else {
+ dbg("PCPROT: I WILL _NOT_ be disconnected!") if isdbg('chanerr');
+ return;
+ }
+ }
+
+ $self->route_pc21($origin, $line, @rout) if @rout;
+}
+
+
+sub handle_22
+{
+ my $self = shift;
+ my $pcno = shift;
+ my $line = shift;
+ my $origin = shift;
+ $self->state('normal');
+ $self->{lastping} = 0;
+}
+
+# WWV info
+sub handle_23