#
# This module impliments the handlers for the protocal mode for a dx cluster
#
-# Copyright (c) 1998-2006 Dirk Koopman G1TLH
+# Copyright (c) 1998-2007 Dirk Koopman G1TLH
#
#
#
$investigation_int $pc19_version $myprot_version
%nodehops $baddx $badspotter $badnode $censorpc
$allowzero $decode_dk0wcy $send_opernam @checklist
- $eph_pc15_restime $pc9x_past_age $pc9x_future_age
+ $eph_pc15_restime $pc9x_past_age $pc9x_dupe_age
$pc10_dupe_age $pc92_slug_changes $last_pc92_slug
+ $pc92Ain $pc92Cin $pc92Din $pc92Kin $pc9x_time_tolerance
);
-$pc9x_past_age = 62*60; # maximum age in the past of a px9x (a config record might be the only
- # thing a node might send - once an hour)
-$pc9x_future_age = 2*3600; # maximum age in the future ditto
+$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; # 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)
+ # this is actually the partition between "yesterday" and "today" but old.
+
# incoming talk commands
sub handle_10
my $pc = shift;
my $create = shift;
+ # check that the time is between 0 >= $t < 86400
+ unless ($t >= 0 && $t < 86400) {
+ dbg("PCPROT: time invalid t: $t, ignored") if isdbg('chanerr');
+ return undef;
+ }
+
+ # check that the time of this pc9x is within tolerance (default 15 mins either way)
+ my $now = $main::systime - $main::systime_daystart ;
+ my $diff = abs($now - $t);
+ unless ($diff < $pc9x_time_tolerance || 86400 - $diff < $pc9x_time_tolerance) {
+ my $c = ref $call ? $call->call : $call;
+ dbg("PC9XERR: $c time out of range t: $t now: $now diff: $diff > $pc9x_time_tolerance, ignored") if isdbg('chan');
+ return undef;
+ }
+
my $parent = ref $call ? $call : Route::Node::get($call);
if ($parent) {
# we only do this for external calls whose routing table
my $lastid = $parent->lastid;
if (defined $lastid) {
if ($t < $lastid) {
+ # note that this is where we determine whether this pc9x has come in yesterday
+ # but is still greater (modulo 86400) than the lastid or is simply an old
+ # duplicate sentence. To determine this we need to do some module 86400
+ # arithmetic. High numbers mean that this is an old duplicate sentence,
+ # low numbers that it is a new sentence.
+ #
+ # Typically you will see yesterday being taken on $t = 84, $lastid = 86235
+ # and old dupes with $t = 234, $lastid = 256 (which give answers 249 and
+ # 86378 respectively in the calculation below).
+ #
if ($t+86400-$lastid > $pc9x_past_age) {
- dbg("PCPROT: dup id on $t <= lastid $lastid, ignored") if isdbg('chanerr');
- return;
+ dbg("PCPROT: dup id on $t <= lastid $lastid, ignored") if isdbg('chanerr') || isdbg('pc92dedupe');
+ return undef;
}
} elsif ($t == $lastid) {
- dbg("PCPROT: dup id on $t == lastid $lastid, ignored") if isdbg('chanerr');
- return;
- } else {
- # $t > $lastid, check that the timestamp offered isn't too far away from 'now'
- if ($t-$lastid > $pc9x_future_age ) {
- dbg("PCPROT: id $t too far in the future of lastid $lastid, ignored") if isdbg('chanerr');
- return;
- }
+ dbg("PCPROT: dup id on $t == lastid $lastid, ignored") if isdbg('chanerr') || isdbg('pc92dedupe');
+ return undef;
}
}
}
} elsif ($create) {
$parent = Route::Node->new($call);
+ } else {
+ dbg("PCPROT: $call does not exist, ignored") if isdbg('pc92dedupe');
+ return undef;
}
- $parent->lastid($t) if $parent;
+ if (isdbg('pc92dedupe')) {
+ my $exists = exists $parent->{lastid}; # naughty, naughty :-)
+ my $val = $parent->{lastid};
+ my $s = $exists ? (defined $val ? $val : 'exists/undef') : 'undef';
+ dbg("PCPROT: $call pc92 id lastid $s -> $t");
+ }
+ $parent->lastid($t);
return $parent;
}
}
$parent->here(Route::here($here));
$parent->version($version || $pc19_version) if $version;
- $parent->build($build) if $build && $build > $parent->build;
+ $parent->build($build) if $build;
$parent->PC92C_dxchan($self->{call}) unless $self->{call} eq $parent->call;
return ($parent, @radd);
}
my $t = $_[2];
my $sort = $_[3];
+ # this catches loops of A/Ds
+# if (eph_dup($line, $pc9x_dupe_age)) {
+# return;
+# }
+
if ($pcall eq $main::mycall) {
dbg("PCPROT: looped back, ignored") if isdbg('chanerr');
return;
return;
}
- my $parent = check_pc9x_t($pcall, $t, 92, 1) || return;
+ # don't create routing entries for D records that don't already exist
+ # this is what causes all those PC92 loops!
+ my $parent = check_pc9x_t($pcall, $t, 92, $sort ne 'D') || return;
my $oparent = $parent;
$parent->do_pc9x(1);
}
} elsif ($sort eq 'K') {
+ $pc92Kin += length $line if $sort eq 'K';
+
# remember the last channel we arrived on
$parent->PC92C_dxchan($self->{call}) unless $self->{call} eq $parent->call;
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 " . $parent->obscount) if isdbg('obscount');
}
} elsif ($sort eq 'A' || $sort eq 'D' || $sort eq 'C') {
+ $pc92Ain += length $line if $sort eq 'A';
+ $pc92Cin += length $line if $sort eq 'C';
+ $pc92Din += length $line if $sort eq 'D';
+
# remember the last channel we arrived on
$parent->PC92C_dxchan($self->{call}) unless $self->{call} eq $parent->call;
# this is the main route section
# here is where all the routes are created and destroyed
- # cope with missing duplicate node calls in the first slot for A or D
+ # cope with missing duplicate node calls in the first slot
my $me = $_[4] || '';
- if (($sort eq 'A' || $sort eq 'D')) {
- $me ||= _encode_pc92_call($parent) unless $me ;
- } else {
- unless ($me) {
- dbg("PCPROT: this type of PC92 *must* have a node call in the first slot, ignored") if is_dbg('chanerr');
- return;
- }
- }
+ $me ||= _encode_pc92_call($parent) unless $me ;
my @ent = map {my @a = _decode_pc92_call($_); @a ? \@a : ()} grep {$_ && /^[0-7]/} $me, @_[5 .. $#_];
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