remove uninitialised warnings in DXProtHandle.pm
[spider.git] / perl / DXProtHandle.pm
index c0711ceee0820cecb59d484971a730c502a763e6..49c54734401670f054851d18ba65cefe6d9617d5 100644 (file)
@@ -32,8 +32,13 @@ use DXHash;
 use Route;
 use Route::Node;
 use Script;
+use DXCIDR;
 
 use strict;
+use warnings qw(all);
+no warnings qw(uninitialized);
+
+
 
 use vars qw($pc11_max_age $pc23_max_age $last_pc50 $eph_restime $eph_info_restime $eph_pc34_restime
                        $last_hour $last10 %eph  %pings %rcmds $ann_to_talk
@@ -44,17 +49,21 @@ use vars qw($pc11_max_age $pc23_max_age $last_pc50 $eph_restime $eph_info_restim
                        $eph_pc15_restime $pc9x_past_age $pc9x_dupe_age
                        $pc10_dupe_age $pc92_slug_changes $last_pc92_slug
                        $pc92Ain $pc92Cin $pc92Din $pc92Kin $pc9x_time_tolerance
-                       $pc92filterdef
+                       $pc92filterdef $senderverify $pc11_dwell_time
                   );
 
 $pc9x_dupe_age = 60;                   # catch loops of circular (usually) D records
 $pc10_dupe_age = 45;                   # just something to catch duplicate PC10->PC93 conversions
-$pc92_slug_changes = 60*5;             # slug any changes going outward for this long
+$pc92_slug_changes = 60*1;             # slug any changes going outward for this long
 $last_pc92_slug = 0;                   # the last time we sent out any delayed add or del PC92s
 $pc9x_time_tolerance = 15*60;  # the time on a pc9x is allowed to be out by this amount
 $pc9x_past_age = (122*60)+             # maximum age in the past of a px9x (a config record might be the only
-       $pc9x_time_tolerance;           # thing a node might send - once an hour and we allow an extra hour for luck)
+$pc9x_time_tolerance;           # thing a node might send - once an hour and we allow an extra hour for luck)
                                 # this is actually the partition between "yesterday" and "today" but old.
+$senderverify = 0;                             # 1 - check for forged PC11 or PC61.
+                                # 2 - if forged, dump them.
+$pc11_dwell_time = 1;                  # number of seconds to wait for a PC61 to come to substitute the PC11
+
 
 $pc92filterdef = bless ([
                          # tag, sort, field, priv, special parser
@@ -65,6 +74,10 @@ $pc92filterdef = bless ([
                          ['zone', 'nz', 3],
                         ], 'Filter::Cmd');
 
+our %pc11q;
+# this is a place to park an incoming PC11 in the sure and certain hope that
+# a PC61 will be along soon. This has the side benefit that it will delay a
+# a PC11 for one second - assuming that it is not removed by a PC61 version
 
 # incoming talk commands
 sub handle_10
@@ -80,14 +93,6 @@ sub handle_10
                return;
        }
 
-       # will we allow it at all?
-       if ($censorpc) {
-               my @bad;
-               if (@bad = BadWords::check($pc->[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);
@@ -101,15 +106,17 @@ sub handle_10
 
        # if this is a 'nodx' node then ignore it
        if ($badnode->in($pc->[6]) || ($via && $badnode->in($via))) {
-               dbg("PCPROT: Bad Node, dropped") if isdbg('chanerr');
+               dbg($line) if isdbg('nologchan');
+               dbg("PCPROT: Bad Node, dropped");
                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');
+               dbg($line) if isdbg('nologchan');
+               dbg("PCPROT: Bad Spotter, dropped");
                return;
        }
 
@@ -120,11 +127,30 @@ sub handle_10
                        return;
                }
        }
+       
+       # will we allow it at all?
+       if ($censorpc) {
+               my @bad;
+               if (@bad = BadWords::check($pc->[3])) {
+                       my $bw = join ', ', @bad; 
+                       dbg($line) if isdbg('nologchan');
+                       dbg("PCPROT: Badwords: '$bw', dropped");
+                       return;
+               }
+       }
 
        # convert this to a PC93, coming from mycall with origin set and process it as such
        $main::me->normal(pc93($to, $from, $via, $pc->[3], $pc->[6]));
 }
 
+my $last;
+my $pc11_saved;
+my $pc11_saved_time;
+my $pc11_rx;
+my $rpc11_to_61;
+my $pc11_to_61;
+my $pc61_rx;
+
 # DX Spot handling
 sub handle_11
 {
@@ -133,6 +159,7 @@ sub handle_11
        my $line = shift;
        my $origin = shift;
        my $pc = shift;
+       my $recurse = shift || 0;
 
        # route 'foreign' pc26s
        if ($pcno == 26) {
@@ -142,68 +169,85 @@ sub handle_11
                }
        }
 
+       dbg("INPUT PC$pcno $line origin $origin recurse: $recurse") if isdbg("pc11") || isdbg("pc61"); 
+
 #      my ($hops) = $pc->[8] =~ /^H(\d+)/;
 
        # is the spotted callsign blank? This should really be trapped earlier but it
        # could break other protocol sentences. Also check for lower case characters.
        if ($pc->[2] =~ /^\s*$/) {
-               dbg("PCPROT: blank callsign, dropped") if isdbg('chanerr');
+               dbg($line) if isdbg('nologchan');
+               dbg("PCPROT: blank callsign, dropped");
                return;
        }
        if ($pc->[2] =~ /[a-z]/) {
-               dbg("PCPROT: lowercase characters, dropped") if isdbg('chanerr');
+               dbg($line) if isdbg('nologchan');
+               dbg("PCPROT: lowercase characters, dropped");
                return;
        }
 
 
        # if this is a 'nodx' node then ignore it
        if ($badnode->in($pc->[7])) {
-               dbg("PCPROT: Bad Node $pc->[7], dropped") if isdbg('chanerr');
-               return;
-       }
-
-       # 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
-       my $nossid = $pc->[6];
-       $nossid =~ s/-\d+$//;
-       if ($badspotter->in($nossid)) {
-               dbg("PCPROT: Bad Spotter $pc->[6], dropped") if isdbg('chanerr');
+               dbg($line) if isdbg('nologchan');
+               dbg("PCPROT: Bad Node $pc->[7], dropped");
                return;
        }
-#      unless (is_ipaddr($pc->[8]) || DXUser::get_current($pc->[6])) {
-#              dbg("PCPROT: Unknown Spotter $pc->[6], dropped") if isdbg('chanerr');
-#              return;
-#      }
 
        # convert the date to a unix date
        my $d = cltounix($pc->[3], $pc->[4]);
        # bang out (and don't pass on) if date is invalid or the spot is too old (or too young)
        if (!$d || (($pcno == 11 || $pcno == 61) && ($d < $main::systime - $pc11_max_age || $d > $main::systime + 900))) {
-               dbg("PCPROT: Spot ignored, invalid date or out of range ($pc->[3] $pc->[4])\n") if isdbg('chanerr');
+               dbg($line) if isdbg('nologchan');
+               dbg("PCPROT: Spot ignored, invalid date or out of range ($pc->[3] $pc->[4])\n");
                return;
        }
 
        # is it 'baddx'
-       if ($baddx->in($pc->[2]) || BadWords::check($pc->[2])) {
-               dbg("PCPROT: Bad DX spot, ignored") if isdbg('chanerr');
+       if ($baddx->in($pc->[2])) {
+               dbg("PCPROT: Bad DX spot '$pc->[2]', ignored");
+               dbg($line) if isdbg('nologchan');
                return;
        }
 
-       # do some de-duping
+       # is it claiming to be BUST(ed)
        $pc->[5] =~ s/^\s+//;                   # take any leading blanks off
        $pc->[2] = unpad($pc->[2]);             # take off leading and trailing blanks from spotted callsign
        if ($pc->[2] =~ /BUST\w*$/) {
+               dbg($line) if isdbg('nologchan');
                dbg("PCPROT: useless 'BUSTED' spot") if isdbg('chanerr');
                return;
        }
-       if ($censorpc) {
-               my @bad;
-               if (@bad = BadWords::check($pc->[5])) {
-                       dbg("PCPROT: Bad words: @bad, dropped") if isdbg('chanerr');
-                       return;
-               }
-       }
+       
+       my $nossid = $pc->[6];
+    $nossid =~ s/-\d+$//;
 
        my @spot = Spot::prepare($pc->[1], $pc->[2], $d, $pc->[5], $nossid, $pc->[7], $pc->[8]);
+
+       #   $f0 = frequency
+       #   $f1 = call
+       #   $f2 = date in unix format
+       #   $f3 = comment
+       #   $f4 = spotter
+       #   $f5 = spotted dxcc country
+       #   $f6 = spotter dxcc country
+       #   $f7 = origin
+       #   $f8 = spotted itu
+       #   $f9 = spotted cq zone
+       #   $f10 = spotter itu
+       #   $f11 = spotter cq zone
+       #   $f12 = spotted us state
+       #   $f13 = spotter us state
+       #   $f14 = ip address
+
+
+       # is this is a 'bad spotter' or an unknown user then ignore it. 
+       if ($badspotter->in($nossid)) {
+               dbg($line) if isdbg('nologchan');
+               dbg("PCPROT: Bad Spotter $pc->[6], dropped");
+               return;
+       }
+
        # global spot filtering on INPUT
        if ($self->{inspotsfilter}) {
                my ($filter, $hops) = $self->{inspotsfilter}->it(@spot);
@@ -213,14 +257,132 @@ sub handle_11
                }
        }
 
+
+       # this is where we decide to delay PC11s in the hope that a PC61 will be along soon.
+       
+       my $key = join '|', @spot[0..2,4,7]; # not including text
+
+       unless ($recurse) {
+               if ($pcno == 61) {
+                       ++$pc61_rx;
+
+                       if ($pc11_saved) {
+                               if ($key eq $pc11_saved->[0]) {
+                                       ++$pc11_to_61;
+                                       my $percent = $pc11_rx ? $pc11_to_61 * 100 / $pc11_rx : 0;
+                                       dbg(sprintf("recurse: $recurse saved PC11 spot $key dumped, better pc61 received pc61: $pc61_rx pc11: $pc11_rx -> pc61: $pc11_to_61 (%0.1f%%)", $percent)) if isdbg("pc11");
+                                       undef $pc11_saved;
+                               }
+                       } 
+               }
+               if ($pcno == 11) {
+
+                       ++$pc11_rx;
+                       
+                       if ($pc11_saved) {
+                               if ($key eq $pc11_saved->[0] ) {
+                                       dbg("recurse: $recurse saved PC11 spot $key, dupe pc11 received and dumped") if isdbg("pc11");
+                                       return;         # because it's a dup
+                               }
+                       }
+
+                       # can we promote this to a PC61?
+                       my $r = Route::User::get($spot[4]); # find spotter
+                       if ($r && $r->ip) {                     # do we have an ip addres
+                               $pcno = 61;                                             # now turn this into a PC61
+                               $spot[14] = $r->ip;
+                               ++$rpc11_to_61;
+                               my $percent = $pc11_rx ? $rpc11_to_61 * 100 / $pc11_rx : 0;
+                               dbg(sprintf("recurse: $recurse PC11 spot $key promoted to pc61 ip $spot[14] pc61: $pc61_rx pc11: $pc11_rx -> pc61 $pc11_to_61 (%0.1f%%)", $percent)) if isdbg("pc11");
+                               undef $pc11_saved;
+                       }
+
+                       # if it is STILL (despite all efforts to change it)  a PC11
+                       if ($pcno == 11) {
+                               if ($pc11_saved && $key ne $pc11_saved->[0]) {
+                                       dbg("recurse: $recurse NEW PC11 spot $key ne $pc11_saved->[0], recursing") if isdbg("pc11");
+                                       # shift @$pc11_saved;   # saved key
+                                       my $self = $pc11_saved->[1];
+                                       my @saved = @$pc11_saved[2..5];
+                                       $self->handle_11(@saved, 1);
+                               }
+                               
+                               $pc11_saved = [$key, $self, $pcno, $line, $origin, $pc];
+                               $pc11_saved_time = $main::systime;
+                               dbg("recurse: $recurse saved new PC11 spot $key for a better offer") if isdbg("pc11");
+                               return;
+                       }
+                       
+               } else {
+                       my $count =  $pc11_to_61+$rpc11_to_61;
+                       my $percent = $pc11_rx ? $count*100 / $pc11_rx : 0;
+                       dbg(sprintf("recurse: $recurse PC61 spot $key passed onward pc61: $pc61_rx pc11: $pc11_rx -> pc61: $count (%0.1f%%)", $percent)) if isdbg("pc11");
+                       $recurse = 0;
+                       undef $pc11_saved;
+               }
+       }
+       
+       
        # 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..4,5])) {
-               dbg("PCPROT: Duplicate Spot ignored\n") if isdbg('chanerr');
+       if (Spot::dup(@spot[0..4,7])) {
+               dbg("PCPROT: Duplicate Spot $pc->[0] $key ignored\n") if isdbg('chanerr') || isdbg('dupespot');
                return;
        }
 
+       # we check IP addresses for PC61 - this will also dedupe PC11 copies
+       if (@$pc > 8 && is_ipaddr($pc->[8])) {
+               my $ip = $pc->[8];
+               $ip =~ s/,/:/g;
+               $ip =~ s/^::ffff://;
+               if (DXCIDR::find($ip)) {
+                       dbg($line) if isdbg('nologchan');
+                       dbg("PCPROT: $ip in badip list, dropped");
+                       return;
+               }
+       }
+
+       
+       # here we verify the spotter is currently connected to the node it says it is one. AKA email sender verify
+       # but without the explicit probe to the node. We are relying on "historical" information, but it very likely
+       # to be current once we have seen the first PC92C from that node.
+       #
+       # As for spots generated from non-PC92 nodes, we'll see after about  do_pc9x3h20m...
+       #
+       if ($senderverify) {
+               my $nroute = Route::Node::get($pc->[7]);
+               my $uroute = Route::Node::get($pc->[6]);
+               my $local = DXChannel::get($pc->[7]);
+               
+               if ($nroute && ($nroute->last_PC92C || ($local && !$local->do_pc9x))) {
+                       my $s = '';
+                       my $ip = $pcno == 61 ?  $pc->[8] : '';
+#                      $s .= "User $pc->[6] not logged in, " unless $uroute;
+                       $s .= "User $pc->[6] not on node $pc->[7], " unless $nroute->is_user($pc->[6]);
+#                      $s .= "Node $pc->[7] at '$ip' not on Node's IP " . $nroute->ip if $ip && $nroute && $nroute->ip && $nroute->ip ne $ip;
+                       if ($s) {
+                               my $action = $senderverify > 1 ? ", DUMPED" : '';
+                               $s =~ s/, $//;
+                               dbg("PCPROT: Suspicious Spot $pc->[2] on $pc->[1] by $pc->[6]($ip)\@$pc->[7] $s$action");
+                               return unless $senderverify < 2;
+                       }
+               }
+       }
+
+       # we until here to do any censorship to try and reduce the amount of noise that repeated copies
+       # from other connected nodes cause
+       if ($censorpc) {
+               my @bad;
+               if (@bad = BadWords::check($pc->[5])) {
+                       my $bw = join ', ', @bad;
+                       dbg($line) if isdbg('nologchan');
+                       dbg("PCPROT: Badwords: '$bw', dropped");
+                       return;
+               }
+       }
+
+       
        # add it
        Spot::add(@spot);
 
@@ -272,8 +434,8 @@ sub handle_11
                                } else {
                                        route(undef, $to, pc34($main::mycall, $to, $cmd));
                                }
-                               if ($to ne $pc->[7]) {
-                                       $to = $pc->[7];
+                               if ($to ne $origin) {
+                                       $to = $origin;
                                        $node = Route::Node::get($to);
                                        if ($node) {
                                                $dxchan = $node->dxchan;
@@ -290,6 +452,15 @@ sub handle_11
                }
        }
 
+       # cancel any recursion as we have now processed it
+       if ($recurse) {
+               if ($pc11_saved && $key eq $pc11_saved->[0]) {
+                       dbg("recurse: $recurse key: $key saved_key: $pc11_saved->[0] removed") if isdbg('pc11');
+                       undef $pc11_saved;
+               }
+               $recurse = 0;
+       }
+
        # local processing
        if (defined &Local::spot) {
                my $r;
@@ -304,6 +475,21 @@ sub handle_11
 
        # send out the filtered spots
        send_dx_spot($self, $line, @spot) if @spot;
+
+       
+}
+
+# used to kick outstanding PC11 if required
+sub pc11_process
+{
+       if ($pc11_saved && $main::systime > $pc11_saved_time + $pc11_dwell_time) {
+               dbg("saved PC11 spot $pc11_saved->[0] timed out waiting, recursing") if isdbg("pc11");
+               shift @$pc11_saved;     # saved key
+               my $self = shift @$pc11_saved;
+               my @saved = @$pc11_saved;
+               undef $pc11_saved;
+               $self->handle_11(@saved, 1);
+       }
 }
 
 # announces
@@ -318,17 +504,10 @@ sub handle_12
        # announce duplicate checking
        $pc->[3] =~ s/^\s+//;                   # remove leading blanks
 
-       if ($censorpc) {
-               my @bad;
-               if (@bad = BadWords::check($pc->[3])) {
-                       dbg("PCPROT: Bad words: @bad, dropped") if isdbg('chanerr');
-                       return;
-               }
-       }
-
        # if this is a 'nodx' node then ignore it
        if ($badnode->in($pc->[5])) {
-               dbg("PCPROT: Bad Node, dropped") if isdbg('chanerr');
+               dbg($line) if isdbg('nologchan');
+               dbg("PCPROT: Bad Node, dropped");
                return;
        }
 
@@ -336,7 +515,8 @@ sub handle_12
        my $nossid = $pc->[1];
        $nossid =~ s/-\d+$//;
        if ($badspotter->in($nossid)) {
-               dbg("PCPROT: Bad Spotter, dropped") if isdbg('chanerr');
+               dbg($line) if isdbg('nologchan');
+               dbg("PCPROT: Bad Spotter, dropped");
                return;
        }
 
@@ -347,6 +527,17 @@ sub handle_12
                return;
        }
 
+       if ($censorpc) {
+               my @bad;
+               if (@bad = BadWords::check($pc->[3])) {
+                       my $bw = join ', ', @bad;
+                       dbg($line) if isdbg('nologchan');
+                       dbg("PCPROT: Badwords: '$bw', dropped");
+                       return;
+               }
+       }
+
+
        my $dxchan;
 
        if ((($dxchan = DXChannel::get($pc->[2])) && $dxchan->is_user) || $pc->[4] =~ /^[\#\w.]+$/){
@@ -616,15 +807,18 @@ sub handle_18
        my $parent = Route::Node::get($self->{call});
 
        # record the type and version offered
-       if (my ($version) = $pc->[1] =~ /DXSpider Version: (\d+\.\d+)/) {
-               $self->{version} = 53 + $version;
-               $self->user->version(53 + $version);
-               $parent->version(0 + $version);
+       if (my ($software, $version) = $pc->[1] =~ /(DXSpider|CC\s*Cluster)\s+Version: (\d+(?:\.\d+)?)/i) {
+               $version += 0;
+               $version += 53 if $version < 6;
+               $self->{version} = $version;
+               $self->user->version($version);
+               $parent->version($version);
                my ($build) = $pc->[1] =~ /Build: (\d+(?:\.\d+)?)/;
-               $self->{build} = 0 + $build;
-               $self->user->build(0 + $build);
-               $parent->build(0 + $build);
-               dbg("$self->{call} = DXSpider version $version build $build");
+               $build += 0;
+               $self->{build} = $build;
+               $self->user->build($build);
+               $parent->build($build);
+               dbg("$self->{call} = $software version $version build $build");
                unless ($self->is_spider) {
                        dbg("Change U " . $self->user->sort . " C $self->{sort} -> S");
                        $self->user->sort('S');
@@ -639,7 +833,7 @@ sub handle_18
                $self->user->version($self->version);
        }
 
-       if ($pc->[1] =~ /\bpc9x/) {
+       if ($pc->[1] =~ /CC\*Cluster/i || $pc->[1] =~ /\bpc9x/i) {
                if ($self->{isolate}) {
                        dbg("$self->{call} pc9x recognised, but node is isolated, using old protocol");
                } elsif (!$self->user->wantpc9x) {
@@ -657,21 +851,37 @@ sub handle_18
        $self->send(pc20());
 }
 
-sub check_add_node
+sub check_add_user
 {
        my $call = shift;
+       my $type = shift;
+       my $homenode = shift;
 
        # add this station to the user database, if required (don't remove SSID from nodes)
        my $user = DXUser::get_current($call);
        unless ($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');
+               $user->sort($type || 'U');
+               if ($user->is_node) {
+                       $user->priv(1);         # I have relented and defaulted nodes
+                       $user->lockout(1) if $user->is_node;
+               } else {
+                       $user->homenode($homenode) if $homenode;
+                       $user->node($homenode);
+                       $user->priv(0);
+               }
                $user->lastin($main::systime); # this make it last longer than just this invocation
                $user->put;                             # just to make sure it gets written away!!!
+               dbg("DXProt: PC92 new user record for $call created");
+       }
+
+       # this is to fix a problem I introduced some build ago by using this function for users
+       # whereas it was only being used for nodes.
+       if ($user->is_user && $user->lockout && ($user->priv // 0) == 1) {
+               $user->priv(0);
+               $user->lockout(0);
+               dbg("DXProt: PC92 user record for $call depriv'd and unlocked");
+               $user->put;
        }
        return $user;
 }
@@ -747,7 +957,7 @@ sub handle_19
                        next;
                }
 
-               my $user = check_add_node($call);
+               my $user = check_add_user($call, 'A');
 
 #              if (eph_dup($genline)) {
 #                      dbg("PCPROT: dup PC19 for $call detected") if isdbg('chanerr');
@@ -824,7 +1034,7 @@ sub handle_20
        my $origin = shift;
        my $pc = shift;
 
-       if ($self->{do_pc9x} && $self->{state} ne 'init92') {
+       if ($self->{do_pc9x} && $self->{state} ne 'init92' && $self->{state} ne 'normal') {
                $self->send("Reseting to oldstyle routing because login call not sent in any pc92");
                $self->{do_pc9x} = 0;
        }
@@ -918,7 +1128,7 @@ sub handle_22
        my $pc = shift;
 
        if ($self->{do_pc9x}) {
-               if ($self->{state} ne 'init92') {
+               if ($self->{state} ne 'init92' && $self->{state} ne 'normal') {
                        $self->send("Reseting to oldstyle routing because login call not sent in any pc92");
                        $self->{do_pc9x} = 0;
                }
@@ -1434,10 +1644,27 @@ sub _decode_pc92_call
        my $is_node = $flag & 4;
        my $is_extnode = $flag & 2;
        my $here = $flag & 1;
-       my $ip  = $part[3];
-       $ip ||= $part[1] if $part[1] && ($part[1] =~ /^(?:\d+\.)+/ || $part[1] =~ /^(?:(?:[abcdef\d]+)?,)+/);
-       $ip =~ s/,/:/g if $ip;
-       return ($call, $is_node, $is_extnode, $here, $part[1], $part[2], $ip);
+       my $version = $part[1] || 0;
+       my $build = $part[2] || 0;
+       my $ip = $part[3] || '';
+
+       # remember that, at this stage, IPV6 addresses have : replaced by ,
+       if (length $version > 4 && $version =~ /[,\.][\da-f]{1,4}/i) {
+               $ip = $version;
+               $version = 0;
+       }
+       $version =~ s/\D//g;
+       $version = 0 unless $version && $version =~ /^[0-9]+$/;
+       $build =~ s/^0\.//;
+       $build =~ s/\D//g;
+       $build = 0 unless $build &&  $build =~ /^[0-9]+$/;
+       if ($ip) {
+        $ip =~ s/,/:/g;
+        $ip =~ s/^::ffff://i;
+               $ip = '' unless is_ipaddr($ip);
+    }
+       dbg("'$icall' = '" . join("', '", $call, $is_node, $is_extnode, $here, $version, $build, $ip) . "'") if isdbg('pc92');
+       return ($call, $is_node, $is_extnode, $here, $version+0, $build+0, $ip);
 }
 
 # decode a pc92 call: flag call : version : build
@@ -1468,6 +1695,7 @@ sub _encode_pc92_call
                $ip =~ s/:/,/g;
                $extra .= ':' . $ip;
        }
+
        return "$flag$call$extra";
 }
 
@@ -1485,35 +1713,65 @@ sub _add_thingy
        my @rout;
 
        # remove spurious IPV6 prefix on IPV4 addresses
-       $ip =~ s/^::ffff:// if $ip;
-       
+       $build ||= 0;
+       $version ||= 0;
+
        if ($call) {
                my $ncall = $parent->call;
                if ($ncall ne $call) {
+                       my $user;
+                       my $r;
+
+                       # normalise call, delete any unnormalised calls in the users file.
+                       # then ignore this thingy
+                       my $normcall = normalise_call($call);
+                       if ($normcall ne $call) {
+                               next if DXChannel::get($call);
+                               $user = DXUser::get($call);
+                               dbg("DXProt::_add_thingy call $call normalised to $normcall, deleting spurious user $call");
+                               $user->del if $user;
+                           $call = $normcall; # this is safe because a route add will ignore duplicates
+                       }
+                       
                        if ($is_node) {
                                dbg("ROUTE: added node $call to $ncall") if isdbg('routelow');
+                               $user = check_add_user($call, 'A');
                                @rout = $parent->add($call, $version, Route::here($here), $ip);
-                               my $r = Route::Node::get($call);
+                               $r = Route::Node::get($call);
                                $r->PC92C_dxchan($dxchan->call, $hops) if $r;
-                               if ($ip) {
-                                       $r->ip($ip);
-                                       Log('DXProt', "PC92A $call -> $ip on $ncall");
+                               if ($version && is_numeric($version) && !$r->K && !$user->K) {
+                                       my $old = $user->sort;
+                                       if ($user->is_ak1a && (($version >= 5455 &&  $build > 0) || ($version >= 3000 && $version <= 3500)) ) {
+                                               $user->sort('S');
+                                               dbg("PCPROT::_add_thingy node $call v: $version b: $build sort ($old) updated to " . $user->sort);
+                                       } elsif ($user->is_spider && ($version < 3000 || ($version > 4000 && $version < 5455))) {
+                                               unless ($version > 0  && $build == 0) {
+                                                       $user->sort('A');
+                                                       $build ||= 0;
+                                                       dbg("PCPROT::_add_thingy node $call v: $version b: $build sort ($old) downgraded to " . $user->sort);
+                                               }
+                                       }
                                }
+                               $r->version($user->version) if $user->version;
+                               $r->build($user->build) if $user->build;
+                               $r->K(1) if $user->K;
                        } else {
                                dbg("ROUTE: added user $call to $ncall") if isdbg('routelow');
+                               $user = check_add_user($call, 'U', $parent->call);
                                @rout = $parent->add_user($call, Route::here($here), $ip);
                                $dxchan->tell_buddies('loginb', $call, $ncall) if $dxchan;
-                               my $r = Route::User::get($call);
-                               if ($ip) {
-                                       $r->ip($ip);
-                                       Log('DXProt', "PC92A $call -> $ip on $ncall");
-                               }
+                               $r = Route::User::get($call);
+                       }
+                       if ($ip) {
+                               $r->ip($ip);
+                               Log('DXProt', "PC92A $call -> $ip on $ncall");
                        }
                        if ($pc92_slug_changes && $parent == $main::routeroot) {
                                $things_add{$call} = Route::get($call);
                                delete $things_del{$call};
                        }
-               } else {
+                       $user->close($main::systime, $ip) if $user;             # this just updates lastseen and the connlist list containing the IP address
+               } else {                                
                        dbgprintring(10) if isdbg('nologchan');
                        dbg("DXProt::add_thingy: Trying to add parent $call to itself $ncall, ignored");
                }
@@ -1679,11 +1937,11 @@ sub pc92_handle_first_slot
        my ($call, $is_node, $is_extnode, $here, $version, $build) = @$slot;
        if ($call && $is_node) {
                if ($call eq $main::mycall) {
-                       dbg("PCPROT: $call looped back onto \$main::mycall ($main::mycall), ignored") if isdbg('chan');
+                       LogDbg('err', "PCPROT: $self->{call} : $call looped back onto \$main::mycall ($main::mycall), ignored");
                        return;
                }
                if ($call eq $main::myalias) {
-                       dbg("PCPROT: $call looped back onto \$main::myalias ($main::myalias), ignored") if isdbg('chan');
+                       LogDbg('err', "PCPROT: $self->{call} : $call looped back onto \$main::myalias ($main::myalias), ignored");
                        return;
                }
                # this is only accepted from my "self".
@@ -1717,7 +1975,7 @@ sub pc92_handle_first_slot
        }
        $parent->here(Route::here($here));
        $parent->version($version || $pc19_version) if $version;
-       $parent->build($build) if $build;
+    $parent->build($build) if $build;
        $parent->PC92C_dxchan($self->{call}, $hops) unless $self->{call} eq $parent->call;
        return ($parent, @radd);
 }
@@ -1744,12 +2002,12 @@ sub handle_92
 #      }
 
        if ($pcall eq $main::mycall) {
-               dbg("PCPROT: looped back, ignored") if isdbg('chan');
+               LogDbg('err', "PCPROT: looped back, ignored");
                return;
        }
 
        if ($pcall eq $main::myalias) {
-               dbg("PCPROT: looped back to \$myalias ($main::myalias), misconfiguration ignored") if isdbg('chan');
+               LogDbg('err', "PCPROT: looped back to \$myalias ($main::myalias), misconfiguration ignored");
                return;
        }
 
@@ -1813,10 +2071,10 @@ sub handle_92
                                        if (@dxchan) {
                                                $_->send($line) for @dxchan;
                                        } else {
-                                               dbg("PCPROT: no return route, ignored") if isdbg('chanerr')
+                                               dbg("PCPROT: $self->{call} : type R no return route, ignored") if isdbg('chanerr') || isdbg('route');
                                        }
                                } else {
-                                       dbg("PCPROT: no return route, ignored") if isdbg('chanerr')
+                                       dbg("PCPROT: $self->{call} : type R no return route, ignored") if isdbg('chanerr') || isdbg('route');
                                }
                        }
                        return;
@@ -1835,13 +2093,44 @@ sub handle_92
 
                        ($parent, $add) = $self->pc92_handle_first_slot(\@ent, $parent, $t, $hops);
                        return unless $parent; # dupe
-
+                       
                        push @radd, $add if $add;
                        $parent->reset_obs;
-                       $parent->version($ent[4]) if $ent[4];
-                       $parent->build($ent[5]) if $ent[5];
-
-                       dbg("ROUTE: reset obscount on $parent->{call} now " . $parent->obscount) if isdbg('obscount');
+                       my $call = $parent->call;
+                       my $version = $ent[4] || 0;
+                       my $build = $ent[5] ||  0;
+                       $build =~ s/^0\.//;
+                       my $oldbuild = $parent->build || 0;
+                       my $oldversion = $parent->version || 0;
+                       my $user = check_add_user($parent->call, 'S');
+                       my $oldsort = $user->sort // '';
+
+                       dbg("PCPROT: PC92 K v: $version ov: $oldversion b: $build ob: $oldbuild pk: " . ($parent->K || '0') . " uk: " . ($user->K || 0)) if isdbg('pc92k');
+                               
+                       if (is_numeric($version) || is_numeric($build)) {
+                               my $changed = 0;
+                               if (($oldversion ne $version || $build ne $oldbuild)) {
+                                       dbg("PCPROT: PC92 K node $call updated version: $version (was $oldversion) build: $build (was $oldbuild)");
+                                       $user->version($parent->version($version));
+                                       $user->build($parent->build($build));
+                                       ++$changed;
+                               }
+                               if ($oldsort ne 'S') {
+                                       dbg("PCPROT: PC92 K node $call updated sort: $sort (was $oldsort)");
+                                       $user->sort('S');
+                                       ++$changed;
+                               }
+                               unless ($user->K) {
+                                       dbg("PCPROT: PC92 K node $call updated - marked as PC92 K user");
+                                       $user->K(1);
+                                       ++$changed;
+                               }
+                               $user->put if $changed;
+                               $parent->K(1); # mark this as come in on a K
+                       } else {
+                               dbg("DXProt PC92 K version call $call: invalid version: '$version' or build: '$version', ignored");
+                       }
+                       dbg("ROUTE: reset obscount on $call now " . $parent->obscount) if isdbg('obscount');
                }
        } elsif ($sort eq 'A' || $sort eq 'D' || $sort eq 'C') {
 
@@ -1882,9 +2171,14 @@ sub handle_92
                        my $dxc;
                        next unless $_ && @$_;
                        if ($_->[0] eq $main::mycall) {
-                               dbg("PCPROT: $_->[0] refers to me, ignored") if isdbg('chanerr');
+                               dbg("PCPROT: $self->{call} : type $sort $_->[0] refers to me, ignored") if isdbg('route');
                                next;
                        }
+                       if ($_->[0] eq $main::myalias && $_->[1] || $_->[0] eq $main::mycall && $_->[1] == 0) {
+                               LogDbg('err',"PCPROT: $self->{call} : type $sort $_->[0] trying to change type to " . $_->[1]?"Node":"User" . ", ignored");
+                               next;
+                       }
+                       
                        push @nent, $_;
                }
 
@@ -1913,7 +2207,7 @@ sub handle_92
                                                push @users, $r->[0];
                                        }
                                } else {
-                                       dbg("PCPROT: pc92 call entry '$_' not decoded, ignored") if isdbg('chanerr');
+                                       dbg("PCPROT: $self->{call} :  pc92 call entry '$_' not decoded, ignored") if isdbg('chanerr') || isdbg('route');
                                }
                        }
 
@@ -2034,21 +2328,13 @@ sub handle_93
                my $s = "ANNTALK: $from\@$onode$vs -> $to '$text' route: $origin";
                dbg($s);
        }
-       
-       # will we allow it at all?
-       if ($censorpc) {
-               my @bad;
-               if (@bad = BadWords::check($text)) {
-                       dbg("PCPROT: Bad words: @bad, 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');
+               dbg($line) if isdbg('nologchan');
+               dbg("PCPROT: Bad Spotter, dropped");
                return;
        }
 
@@ -2058,6 +2344,17 @@ sub handle_93
                return;
        }
 
+       # will we allow it at all?
+       if ($censorpc) {
+               my @bad;
+               if (@bad = BadWords::check($text)) {
+                       my $bw = join ', ', @bad;
+                       dbg($line) if isdbg('nologchan');
+                       dbg("PCPROT: Badwords: '$bw', dropped");
+                       return;
+               }
+       }
+
        # if it is routeable then then treat it like a talk
        my $ref = Route::get($to);
        if ($ref) {