3 # This module impliments the protocal mode for a dx cluster
5 # Copyright (c) 1998 Dirk Koopman G1TLH
30 use Time::HiRes qw(gettimeofday tv_interval);
37 use vars qw($me $pc11_max_age $pc23_max_age
38 $last_hour $last10 %eph %pings %rcmds
39 %nodehops $baddx $badspotter $badnode $censorpc
40 $allowzero $decode_dk0wcy $send_opernam @checklist);
42 $me = undef; # the channel id for this cluster
43 $pc11_max_age = 1*3600; # the maximum age for an incoming 'real-time' pc11
44 $pc23_max_age = 1*3600; # the maximum age for an incoming 'real-time' pc23
46 $last_hour = time; # last time I did an hourly periodic update
47 %pings = (); # outstanding ping requests outbound
48 %rcmds = (); # outstanding rcmd requests outbound
49 %nodehops = (); # node specific hop control
50 $censorpc = 1; # Do a BadWords::check on text fields and reject things
51 # loads of 'bad things'
52 $baddx = new DXHash "baddx";
53 $badspotter = new DXHash "badspotter";
54 $badnode = new DXHash "badnode";
59 [ qw(c c m bp bc c) ], # pc10
60 [ qw(f m d t m c c h) ], # pc11
61 [ qw(c bc m bp bm p h) ], # pc12
65 undef , # pc16 has to be validated manually
68 undef , # pc19 has to be validated manually
69 undef , # pc20 no validation
71 undef , # pc22 no validation
72 [ qw(d n n n n m c c h) ], # pc23
74 [ qw(c c n n) ], # pc25
75 [ qw(f m d t m c c bc) ], # pc26
76 [ qw(d n n n n m c c bc) ], # pc27
77 [ qw(c c m c d t p m bp n p bp bc) ], # pc28
78 [ qw(c c n m) ], # pc29
86 [ qw(c c n m) ], # pc37
87 undef, # pc38 not interested
89 [ qw(c c m p n) ], # pc40
90 [ qw(c n m h) ], # pc41
92 undef, # pc43 don't handle it
93 [ qw(c c n m m c) ], # pc44
94 [ qw(c c n m) ], # pc45
100 [ qw(c c n) ], # pc51
122 [ qw(d n n n n n n m m m c c h) ], # pc73
133 [ qw(c c c m) ], # pc84
134 [ qw(c c c m) ], # pc85
137 # use the entry in the check list to check the field list presented
138 # return OK if line NOT in check list (for now)
143 return 0 if $n < 0 || $n > @checklist;
144 my $ref = $checklist[$n];
145 return 0 unless ref $ref;
148 shift; # not interested in the first field
149 for ($i = 0; $i < @$ref; $i++) {
150 my ($blank, $act) = $$ref[$i] =~ /^(b?)(\w)$/;
151 return 0 unless $act;
152 next if $blank && $_[$i] =~ /^[ \*]$/;
154 return $i+1 unless is_callsign($_[$i]);
155 } elsif ($act eq 'm') {
156 return $i+1 unless is_pctext($_[$i]);
157 } elsif ($act eq 'p') {
158 return $i+1 unless is_pcflag($_[$i]);
159 } elsif ($act eq 'f') {
160 return $i+1 unless is_freq($_[$i]);
161 } elsif ($act eq 'n') {
162 return $i+1 unless $_[$i] =~ /^[\d ]+$/;
163 } elsif ($act eq 'h') {
164 return $i+1 unless $_[$i] =~ /^H\d\d?$/;
165 } elsif ($act eq 'd') {
166 return $i+1 unless $_[$i] =~ /^\s*\d+-\w\w\w-[12][90]\d\d$/;
167 } elsif ($act eq 't') {
168 return $i+1 unless $_[$i] =~ /^[012]\d[012345]\dZ$/;
176 my $user = DXUser->get($main::mycall);
177 $DXProt::myprot_version += $main::version*100;
178 $me = DXProt->new($main::mycall, 0, $user);
180 $me->{state} = "indifferent";
181 do "$main::data/hop_table.pl" if -e "$main::data/hop_table.pl";
183 $me->{sort} = 'S'; # S for spider
185 # $Route::Node::me->adddxchan($me);
189 # obtain a new connection this is derived from dxchannel
194 my $self = DXChannel::alloc(@_);
196 # add this node to the table, the values get filled in later
199 $main::routeroot->add($call, '0000', Route::here(1)) if $call ne $main::mycall;
204 # this is how a pc connection starts (for an incoming connection)
205 # issue a PC38 followed by a PC18, then wait for a PC20 (remembering
206 # all the crap that comes between).
209 my ($self, $line, $sort) = @_;
210 my $call = $self->{call};
211 my $user = $self->{user};
213 # remember type of connection
214 $self->{consort} = $line;
215 $self->{outbound} = $sort eq 'O';
216 $self->{priv} = $user->priv || 1; # other clusters can always be 'normal' users
217 $self->{lang} = $user->lang || 'en';
218 $self->{isolate} = $user->{isolate};
219 $self->{consort} = $line; # save the connection type
222 # get the output filters
223 $self->{spotsfilter} = Filter::read_in('spots', $call, 0) || Filter::read_in('spots', 'node_default', 0);
224 $self->{wwvfilter} = Filter::read_in('wwv', $call, 0) || Filter::read_in('wwv', 'node_default', 0);
225 $self->{wcyfilter} = Filter::read_in('wcy', $call, 0) || Filter::read_in('wcy', 'node_default', 0);
226 $self->{annfilter} = Filter::read_in('ann', $call, 0) || Filter::read_in('ann', 'node_default', 0) ;
227 $self->{routefilter} = Filter::read_in('route', $call, 0) || Filter::read_in('route', 'node_default', 0) ;
230 # get the INPUT filters (these only pertain to Clusters)
231 $self->{inspotsfilter} = Filter::read_in('spots', $call, 1) || Filter::read_in('spots', 'node_default', 1);
232 $self->{inwwvfilter} = Filter::read_in('wwv', $call, 1) || Filter::read_in('wwv', 'node_default', 1);
233 $self->{inwcyfilter} = Filter::read_in('wcy', $call, 1) || Filter::read_in('wcy', 'node_default', 1);
234 $self->{inannfilter} = Filter::read_in('ann', $call, 1) || Filter::read_in('ann', 'node_default', 1);
235 $self->{inroutefilter} = Filter::read_in('route', $call, 1) || Filter::read_in('route', 'node_default', 1);
237 # set unbuffered and no echo
238 $self->send_now('B',"0");
239 $self->send_now('E',"0");
241 # ping neighbour node stuff
242 my $ping = $user->pingint;
243 $ping = 5*60 unless defined $ping;
244 $self->{pingint} = $ping;
245 $self->{nopings} = $user->nopings || 2;
246 $self->{pingtime} = [ ];
247 $self->{pingave} = 0;
249 # send initialisation string
250 unless ($self->{outbound}) {
252 $self->{lastping} = $main::systime;
254 $self->{lastping} = $main::systime + ($self->pingint / 2);
256 $self->state('init');
257 $self->{pc50_t} = $main::systime;
259 # send info to all logged in thingies
260 $self->tell_login('loginn');
262 Log('DXProt', "$call connected");
266 # This is the normal pcxx despatcher
270 my ($self, $line) = @_;
271 my @field = split /\^/, $line;
272 return unless @field;
274 pop @field if $field[-1] eq '~';
276 # print join(',', @field), "\n";
279 # process PC frames, this will fail unless the frame starts PCnn
280 my ($pcno) = $field[0] =~ /^PC(\d\d)/; # just get the number
282 return if $pcno < 10 || $pcno > 99;
284 # check for and dump bad protocol messages
285 my $n = check($pcno, @field);
287 dbg("PCPROT: bad field $n, dumped (" . parray($checklist[$pcno-10]) . ")") if isdbg('chanerr');
294 $pcr = Local::pcprot($self, $pcno, @field);
296 # dbg("Local::pcprot error $@") if isdbg('local') if $@;
300 if ($pcno == 10) { # incoming talk
302 # will we allow it at all?
305 if (@bad = BadWords::check($field[3])) {
306 dbg("PCPROT: Bad words: @bad, dropped") if isdbg('chanerr');
311 # is it for me or one of mine?
312 my ($to, $via, $call, $dxchan);
313 if ($field[5] gt ' ') {
314 $call = $via = $field[2];
317 $call = $to = $field[2];
319 $dxchan = DXChannel->get($main::myalias) if $call eq $main::mycall;
320 $dxchan = DXChannel->get($call) unless $dxchan;
321 if ($dxchan && $dxchan->is_user) {
322 $field[3] =~ s/\%5E/^/g;
323 $dxchan->talk($field[1], $to, $via, $field[3]);
325 $self->route($field[2], $line); # relay it on its way
330 if ($pcno == 11 || $pcno == 26) { # dx spot
332 # route 'foreign' pc26s
334 if ($field[7] ne $main::mycall) {
335 $self->route($field[7], $line);
340 # if this is a 'nodx' node then ignore it
341 if ($badnode->in($field[7])) {
342 dbg("PCPROT: Bad Node, dropped") if isdbg('chanerr');
346 # if this is a 'bad spotter' user then ignore it
347 if ($badspotter->in($field[6])) {
348 dbg("PCPROT: Bad Spotter, dropped") if isdbg('chanerr');
352 # convert the date to a unix date
353 my $d = cltounix($field[3], $field[4]);
354 # bang out (and don't pass on) if date is invalid or the spot is too old (or too young)
355 if (!$d || ($pcno == 11 && ($d < $main::systime - $pc11_max_age || $d > $main::systime + 900))) {
356 dbg("PCPROT: Spot ignored, invalid date or out of range ($field[3] $field[4])\n") if isdbg('chanerr');
361 if ($baddx->in($field[2])) {
362 dbg("PCPROT: Bad DX spot, ignored") if isdbg('chanerr');
367 $field[5] =~ s/^\s+//; # take any leading blanks off
368 $field[2] = unpad($field[2]); # take off leading and trailing blanks from spotted callsign
369 if ($field[2] =~ /BUST\w*$/) {
370 dbg("PCPROT: useless 'BUSTED' spot") if isdbg('chanerr');
373 if (Spot::dup($field[1], $field[2], $d, $field[5])) {
374 dbg("PCPROT: Duplicate Spot ignored\n") if isdbg('chanerr');
379 if (@bad = BadWords::check($field[5])) {
380 dbg("PCPROT: Bad words: @bad, dropped") if isdbg('chanerr');
385 my @spot = Spot::prepare($field[1], $field[2], $d, $field[5], $field[6], $field[7]);
386 # global spot filtering on INPUT
387 if ($self->{inspotsfilter}) {
388 my ($filter, $hops) = $self->{inspotsfilter}->it(@spot);
390 dbg("PCPROT: Rejected by input spot filter") if isdbg('chanerr');
399 # @spot at this point contains:-
400 # freq, spotted call, time, text, spotter, spotted cc, spotters cc, orig node
401 # then spotted itu, spotted cq, spotters itu, spotters cq
402 # you should be able to route on any of these
405 # fix up qra locators of known users
406 my $user = DXUser->get_current($spot[4]);
408 my $qra = $user->qra;
409 unless ($qra && DXBearing::is_qra($qra)) {
410 my $lat = $user->lat;
411 my $long = $user->long;
412 if (defined $lat && defined $long) {
413 $user->qra(DXBearing::lltoqra($lat, $long));
418 # send a remote command to a distant cluster if it is visible and there is no
419 # qra locator and we havn't done it for a month.
421 unless ($user->qra) {
423 my $to = $user->homenode;
424 my $last = $user->lastoper || 0;
425 if ($to ne $main::mycall && $send_opernam && $main::systime > $last + $DXUser::lastoperinterval && $to && ($node = Route::Node::get($to)) ) {
426 my $cmd = "forward/opernam $spot[4]";
427 # send the rcmd but we aren't interested in the replies...
428 my $dxchan = $node->dxchan;
429 if ($dxchan && $dxchan->is_clx) {
430 route(undef, $to, pc84($main::mycall, $to, $main::mycall, $cmd));
432 route(undef, $to, pc34($main::mycall, $to, $cmd));
434 if ($to ne $field[7]) {
436 $node = Route::Node::get($to);
438 $dxchan = $node->dxchan;
439 if ($dxchan && $dxchan->is_clx) {
440 route(undef, $to, pc84($main::mycall, $to, $main::mycall, $cmd));
442 route(undef, $to, pc34($main::mycall, $to, $cmd));
446 $user->lastoper($main::systime);
455 $r = Local::spot($self, @spot);
457 # dbg("Local::spot1 error $@") if isdbg('local') if $@;
460 # DON'T be silly and send on PC26s!
461 return if $pcno == 26;
463 # send out the filtered spots
464 send_dx_spot($self, $line, @spot) if @spot;
468 if ($pcno == 12) { # announces
469 # announce duplicate checking
470 $field[3] =~ s/^\s+//; # remove leading blanks
471 if (AnnTalk::dup($field[1], $field[2], $field[3])) {
472 dbg("PCPROT: Duplicate Announce ignored") if isdbg('chanerr');
478 if (@bad = BadWords::check($field[3])) {
479 dbg("PCPROT: Bad words: @bad, dropped") if isdbg('chanerr');
484 if ($field[2] eq '*' || $field[2] eq $main::mycall) {
486 # global ann filtering on INPUT
487 if ($self->{inannfilter}) {
488 my ($ann_dxcc, $ann_itu, $ann_cq, $org_dxcc, $org_itu, $org_cq) = (0..0);
489 my @dxcc = Prefix::extract($field[1]);
491 $ann_dxcc = $dxcc[1]->dxcc;
492 $ann_itu = $dxcc[1]->itu;
493 $ann_cq = $dxcc[1]->cq();
495 @dxcc = Prefix::extract($field[5]);
497 $org_dxcc = $dxcc[1]->dxcc;
498 $org_itu = $dxcc[1]->itu;
499 $org_cq = $dxcc[1]->cq();
501 my ($filter, $hops) = $self->{inannfilter}->it(@field[1..6], $self->{call},
502 $ann_dxcc, $ann_itu, $ann_cq, $org_dxcc, $org_itu, $org_cq);
504 dbg("PCPROT: Rejected by input announce filter") if isdbg('chanerr');
510 $self->send_announce($line, @field[1..6]);
512 $self->route($field[2], $line);
528 if ($pcno == 16) { # add a user
532 my $ncall = $field[1];
533 my $newline = "PC16^";
535 if ($ncall eq $main::mycall) {
536 dbg("PCPROT: trying to alter config on this node from outside!") if isdbg('chanerr');
539 $dxchan = DXChannel->get($ncall);
540 if ($dxchan && $dxchan ne $self) {
541 dbg("PCPROT: PC16 from $self->{call} trying to alter locally connected $ncall, ignored!") if isdbg('chanerr');
544 my $parent = Route::Node::get($ncall);
546 dbg("PCPROT: Node $ncall not in config") if isdbg('chanerr');
550 # input filter if required
551 return unless $self->in_filter_route($parent);
555 for ($i = 2; $i < $#field; $i++) {
556 my ($call, $conf, $here) = $field[$i] =~ /^(\S+) (\S) (\d)/o;
557 next unless $call && $conf && defined $here && is_callsign($call);
558 next if $call eq $main::mycall;
560 $conf = $conf eq '*';
562 my $r = Route::User::get($call);
563 my $flags = Route::here($here)|Route::conf($conf);
566 if ($r->flags != $flags) {
570 $r->addparent($ncall);
572 push @rout, $parent->add_user($call, $flags);
575 # add this station to the user database, if required
576 $call =~ s/-\d+$//o; # remove ssid for users
577 my $user = DXUser->get_current($call);
578 $user = DXUser->new($call) if !$user;
579 $user->homenode($parent->call) if !$user->homenode;
580 $user->node($parent->call);
581 $user->lastin($main::systime) unless DXChannel->get($call);
586 # queue up any messages (look for privates only)
587 DXMsg::queue_msg(1) if $self->state eq 'normal';
589 $self->route_pc16($parent, @rout) if @rout;
593 if ($pcno == 17) { # remove a user
595 my $ncall = $field[2];
596 my $ucall = $field[1];
597 if ($ncall eq $main::mycall) {
598 dbg("PCPROT: trying to alter config on this node from outside!") if isdbg('chanerr');
601 $dxchan = DXChannel->get($ncall);
602 if ($dxchan && $dxchan ne $self) {
603 dbg("PCPROT: PC17 from $self->{call} trying to alter locally connected $ncall, ignored!") if isdbg('chanerr');
606 my $parent = Route::Node::get($ncall);
608 dbg("PCPROT: Route::Node $ncall not in config") if isdbg('chanerr');
612 # input filter if required
613 return unless $self->in_filter_route($parent);
615 my @rout = $parent->del_user($ucall);
616 $self->route_pc17($parent, @rout) if @rout;
620 if ($pcno == 18) { # link request
621 $self->state('init');
623 # first clear out any nodes on this dxchannel
624 my $parent = Route::Node::get($self->{call});
625 my @rout = $parent->del_nodes;
626 $self->route_pc21(@rout, $parent);
627 $self->send_local_config();
629 return; # we don't pass these on
632 if ($pcno == 19) { # incoming cluster list
634 my $newline = "PC19^";
638 my $parent = Route::Node::get($self->{call});
640 dbg("DXPROT: my parent $self->{call} has disappeared");
646 for ($i = 1; $i < $#field-1; $i += 4) {
647 my $here = $field[$i];
648 my $call = uc $field[$i+1];
649 my $conf = $field[$i+2];
650 my $ver = $field[$i+3];
651 next unless defined $here && defined $conf && is_callsign($call);
652 # check for sane parameters
653 $ver = 5000 if $ver eq '0000';
654 next if $ver < 5000; # only works with version 5 software
655 next if length $call < 3; # min 3 letter callsigns
656 next if $call eq $main::mycall;
658 # update it if required
659 my $r = Route::Node::get($call);
660 my $flags = Route::here($here)|Route::conf($conf);
663 if ($call ne $parent->call) {
664 if ($self->in_filter_route($r)) {
665 $ar = $parent->add($call, $ver, $flags);
666 push @rout, $ar if $ar;
671 if ($r->version ne $ver || $r->flags != $flags) {
674 push @rout, $r unless $ar;
677 if ($call eq $self->{call}) {
678 dbg("DXPROT: my channel route for $call has disappeared");
682 my $new = Route->new($call); # throw away
683 if ($self->in_filter_route($new)) {
684 my $r = $parent->add($call, $ver, $flags);
691 # unbusy and stop and outgoing mail (ie if somehow we receive another PC19 without a disconnect)
692 my $mref = DXMsg::get_busy($call);
693 $mref->stop_msg($call) if $mref;
695 # add this station to the user database, if required (don't remove SSID from nodes)
696 my $user = DXUser->get_current($call);
698 $user = DXUser->new($call);
700 $user->priv(1); # I have relented and defaulted nodes
701 $self->{priv} = 1; # to user RCMDs allowed
702 $user->homenode($call);
705 $user->lastin($main::systime) unless DXChannel->get($call);
709 $self->route_pc19(@rout) if @rout;
713 if ($pcno == 20) { # send local configuration
714 $self->send_local_config();
716 $self->state('normal');
720 if ($pcno == 21) { # delete a cluster from the list
721 my $call = uc $field[1];
723 my $parent = Route::Node::get($self->{call});
725 dbg("DXPROT: my parent $self->{call} has disappeared");
729 my $node = Route::Node::get($call);
730 if ($call ne $main::mycall) { # don't allow malicious buggers to disconnect me!
731 if ($call eq $self->{call}) {
732 dbg("PCPROT: Trying to disconnect myself with PC21") if isdbg('chanerr');
738 return unless $self->in_filter_route($node);
741 push @rout, $node->del($parent);
744 dbg("PCPROT: I WILL _NOT_ be disconnected!") if isdbg('chanerr');
747 $self->route_pc21(@rout) if @rout;
752 $self->state('normal');
756 if ($pcno == 23 || $pcno == 27) { # WWV info
758 # route 'foreign' pc27s
760 if ($field[8] ne $main::mycall) {
761 $self->route($field[8], $line);
767 my $d = cltounix($field[1], sprintf("%02d18Z", $field[2]));
768 my $sfi = unpad($field[3]);
769 my $k = unpad($field[4]);
770 my $i = unpad($field[5]);
771 my ($r) = $field[6] =~ /R=(\d+)/;
773 if (($pcno == 23 && $d < $main::systime - $pc23_max_age) || $d > $main::systime + 1500 || $field[2] < 0 || $field[2] > 23) {
774 dbg("PCPROT: WWV Date ($field[1] $field[2]) out of range") if isdbg('chanerr');
777 if (Geomag::dup($d,$sfi,$k,$i,$field[6])) {
778 dbg("PCPROT: Dup WWV Spot ignored\n") if isdbg('chanerr');
781 $field[7] =~ s/-\d+$//o; # remove spotter's ssid
783 my $wwv = Geomag::update($d, $field[2], $sfi, $k, $i, @field[6..8], $r);
787 $rep = Local::wwv($self, $field[1], $field[2], $sfi, $k, $i, @field[6..8], $r);
789 # dbg("Local::wwv2 error $@") if isdbg('local') if $@;
792 # DON'T be silly and send on PC27s!
793 return if $pcno == 27;
795 # broadcast to the eager world
796 send_wwv_spot($self, $line, $d, $field[2], $sfi, $k, $i, @field[6..8]);
800 if ($pcno == 24) { # set here status
801 my $call = uc $field[1];
803 $nref = Route::Node::get($call);
804 $uref = Route::User::get($call);
805 return unless $nref || $uref; # if we don't know where they are, it's pointless sending it on
807 unless (eph_dup($line)) {
808 $nref->here($field[2]) if $nref;
809 $uref->here($field[2]) if $uref;
810 my $ref = $nref || $uref;
811 return unless $self->in_filter_route($ref);
812 $self->route_pc24($ref, $field[3]);
817 if ($pcno == 25) { # merge request
818 if ($field[1] ne $main::mycall) {
819 $self->route($field[1], $line);
822 if ($field[2] eq $main::mycall) {
823 dbg("PCPROT: Trying to merge to myself, ignored") if isdbg('chanerr');
827 Log('DXProt', "Merge request for $field[3] spots and $field[4] WWV from $field[1]");
831 my @in = reverse Spot::search(1, undef, undef, 0, $field[3]);
834 $self->send(pc26(@{$in}[0..4], $field[2]));
840 my @in = reverse Geomag::search(0, $field[4], time, 1);
843 $self->send(pc27(@{$in}[0..5], $field[2]));
849 if (($pcno >= 28 && $pcno <= 33) || $pcno == 40 || $pcno == 42 || $pcno == 49) { # mail/file handling
850 if ($pcno == 49 || $field[1] eq $main::mycall) {
851 DXMsg::process($self, $line);
853 $self->route($field[1], $line) unless $self->is_clx;
858 if ($pcno == 34 || $pcno == 36) { # remote commands (incoming)
859 if ($field[1] eq $main::mycall) {
860 my $ref = DXUser->get_current($field[2]);
861 my $cref = Route::Node::get($field[2]);
862 Log('rcmd', 'in', $ref->{priv}, $field[2], $field[3]);
863 unless (!$cref || !$ref || $cref->call ne $ref->homenode) { # not allowed to relay RCMDS!
864 if ($ref->{priv}) { # you have to have SOME privilege, the commands have further filtering
865 $self->{remotecmd} = 1; # for the benefit of any command that needs to know
866 my $oldpriv = $self->{priv};
867 $self->{priv} = $ref->{priv}; # assume the user's privilege level
868 my @in = (DXCommandmode::run_cmd($self, $field[3]));
869 $self->{priv} = $oldpriv;
872 $self->send(pc35($main::mycall, $field[2], "$main::mycall:$_"));
873 Log('rcmd', 'out', $field[2], $_);
875 delete $self->{remotecmd};
877 $self->send(pc35($main::mycall, $field[2], "$main::mycall:sorry...!"));
880 $self->send(pc35($main::mycall, $field[2], "$main::mycall:your attempt is logged, Tut tut tut...!"));
883 my $ref = DXUser->get_current($field[1]);
884 if ($ref && $ref->is_clx) {
885 $self->route($field[1], pc84($field[2], $field[1], $field[2], $field[3]));
887 $self->route($field[1], $line);
893 if ($pcno == 35) { # remote command replies
894 if ($field[1] eq $main::mycall) {
895 my $s = $rcmds{$field[2]};
897 my $dxchan = DXChannel->get($s->{call});
898 $dxchan->send($field[3]) if $dxchan;
899 delete $rcmds{$field[2]} if !$dxchan;
901 # send unsolicited ones to the sysop
902 my $dxchan = DXChannel->get($main::myalias);
903 $dxchan->send($field[3]) if $dxchan;
906 my $ref = DXUser->get_current($field[1]);
907 if ($ref && $ref->is_clx) {
908 $self->route($field[1], pc85($field[2], $field[1], $field[2], $field[3]));
910 $self->route($field[1], $line);
916 # for pc 37 see 44 onwards
918 if ($pcno == 38) { # node connected list from neighbour
922 if ($pcno == 39) { # incoming disconnect
923 if ($field[1] eq $self->{call}) {
924 $self->disconnect(1);
926 dbg("PCPROT: came in on wrong channel") if isdbg('chanerr');
931 if ($pcno == 41) { # user info
932 # add this station to the user database, if required
933 my $call = $field[1];
934 my $user = DXUser->get_current($call);
935 $user = DXUser->new($call) if !$user;
937 if ($field[2] == 1) {
938 $user->name($field[3]);
939 } elsif ($field[2] == 2) {
940 $user->qth($field[3]);
941 } elsif ($field[2] == 3) {
942 my ($lat, $long) = DXBearing::stoll($field[3]);
945 $user->qra(DXBearing::lltoqra($lat, $long)) unless $user->qra && DXBearing::is_qra($user->qra);
946 } elsif ($field[2] == 4) {
947 $user->homenode($field[3]);
949 $user->lastoper($main::systime); # to cut down on excessive for/opers being generated
951 my $ref = Route::get($call) || Route->new($call);
953 # input filter if required
954 return unless $self->in_filter_route($ref);
956 $self->route_pc41($ref, $call, $field[2], $field[3], $field[4]) if $ref && !eph_dup($line);
964 if ($pcno == 37 || $pcno == 44 || $pcno == 45 || $pcno == 46 || $pcno == 47 || $pcno == 48) {
965 DXDb::process($self, $line);
969 if ($pcno == 50) { # keep alive/user list
970 my $call = $field[1];
971 my $node = Route::Node::get($call);
973 return unless $node->call eq $self->{call};
974 $node->usercount($field[2]);
976 # input filter if required
977 return unless $self->in_filter_route($node);
979 $self->route_pc50($node, $field[2], $field[3]) unless eph_dup($line);
984 if ($pcno == 51) { # incoming ping requests/answers
986 my $from = $field[2];
987 my $flag = $field[3];
990 if ($to eq $main::mycall) {
992 $self->send(pc51($from, $to, '0'));
994 # it's a reply, look in the ping list for this one
995 my $ref = $pings{$from};
997 my $tochan = DXChannel->get($from);
1000 my $dxchan = DXChannel->get($r->{call});
1001 next unless $dxchan;
1002 my $t = tv_interval($r->{t}, [ gettimeofday ]);
1003 if ($dxchan->is_user) {
1004 my $s = sprintf "%.2f", $t;
1005 my $ave = sprintf "%.2f", $tochan ? ($tochan->{pingave} || $t) : $t;
1006 $dxchan->send($dxchan->msg('pingi', $from, $s, $ave))
1007 } elsif ($dxchan->is_node) {
1009 $tochan->{nopings} = $tochan->user->nopings || 2; # pump up the timer
1010 push @{$tochan->{pingtime}}, $t;
1011 shift @{$tochan->{pingtime}} if @{$tochan->{pingtime}} > 6;
1013 for (@{$tochan->{pingtime}}) {
1016 $tochan->{pingave} = $st / @{$tochan->{pingtime}};
1023 # route down an appropriate thingy
1024 $self->route($to, $line);
1029 if ($pcno == 75) { # dunno but route it
1030 my $call = $field[1];
1031 if ($call ne $main::mycall) {
1032 $self->route($call, $line);
1037 if ($pcno == 73) { # WCY broadcasts
1038 my $call = $field[1];
1041 my $d = cltounix($call, sprintf("%02d18Z", $field[2]));
1042 if (($pcno == 23 && $d < $main::systime - $pc23_max_age) || $d > $main::systime + 1500 || $field[2] < 0 || $field[2] > 23) {
1043 dbg("PCPROT: WCY Date ($call $field[2]) out of range") if isdbg('chanerr');
1046 @field = map { unpad($_) } @field;
1047 if (WCY::dup($d,@field[3..7])) {
1048 dbg("PCPROT: Dup WCY Spot ignored\n") if isdbg('chanerr');
1052 my $wcy = WCY::update($d, @field[2..12]);
1056 $rep = Local::wwv($self, @field[1..12]);
1058 # dbg("Local::wcy error $@") if isdbg('local') if $@;
1061 # broadcast to the eager world
1062 send_wcy_spot($self, $line, $d, @field[2..12]);
1066 if ($pcno == 84) { # remote commands (incoming)
1067 my $call = $field[1];
1068 if ($call eq $main::mycall) {
1069 my $ref = DXUser->get_current($field[2]);
1070 my $cref = Route::Node::get($field[2]);
1071 Log('rcmd', 'in', $ref->{priv}, $field[2], $field[4]);
1072 unless ($field[4] =~ /rcmd/i || !$cref || !$ref || $cref->call ne $ref->homenode) { # not allowed to relay RCMDS!
1073 if ($ref->{priv}) { # you have to have SOME privilege, the commands have further filtering
1074 $self->{remotecmd} = 1; # for the benefit of any command that needs to know
1075 my $oldpriv = $self->{priv};
1076 $self->{priv} = $ref->{priv}; # assume the user's privilege level
1077 my @in = (DXCommandmode::run_cmd($self, $field[4]));
1078 $self->{priv} = $oldpriv;
1081 $self->send(pc85($main::mycall, $field[2], $field[3], "$main::mycall:$_"));
1082 Log('rcmd', 'out', $field[2], $_);
1084 delete $self->{remotecmd};
1086 $self->send(pc85($main::mycall, $field[2], $field[3], "$main::mycall:sorry...!"));
1089 $self->send(pc85($main::mycall, $field[2], $field[3],"$main::mycall:your attempt is logged, Tut tut tut...!"));
1092 my $ref = DXUser->get_current($call);
1093 if ($ref && $ref->is_clx) {
1094 $self->route($call, $line);
1096 $self->route($call, pc34($field[2], $call, $field[4]));
1102 if ($pcno == 85) { # remote command replies
1103 my $call = $field[1];
1104 if ($call eq $main::mycall) {
1105 my $dxchan = DXChannel->get($field[3]);
1107 $dxchan->send($field[4]);
1109 my $s = $rcmds{$field[2]};
1111 $dxchan = DXChannel->get($s->{call});
1112 $dxchan->send($field[4]) if $dxchan;
1113 delete $rcmds{$field[2]} if !$dxchan;
1115 # send unsolicited ones to the sysop
1116 my $dxchan = DXChannel->get($main::myalias);
1117 $dxchan->send($field[4]) if $dxchan;
1121 my $ref = DXUser->get_current($call);
1122 if ($ref && $ref->is_clx) {
1123 $self->route($call, $line);
1125 $self->route($call, pc35($field[2], $call, $field[4]));
1132 # if get here then rebroadcast the thing with its Hop count decremented (if
1133 # there is one). If it has a hop count and it decrements to zero then don't
1136 # NOTE - don't arrive here UNLESS YOU WANT this lump of protocol to be
1140 if (eph_dup($line)) {
1141 dbg("PCPROT: Ephemeral dup, dropped") if isdbg('chanerr');
1143 unless ($self->{isolate}) {
1144 broadcast_ak1a($line, $self); # send it to everyone but me
1150 # This is called from inside the main cluster processing loop and is used
1151 # for despatching commands that are doing some long processing job
1156 my @dxchan = DXChannel->get_all();
1159 foreach $dxchan (@dxchan) {
1160 next unless $dxchan->is_node();
1161 next if $dxchan == $me;
1163 # send a pc50 out on this channel
1164 $dxchan->{pc50_t} = $main::systime unless exists $dxchan->{pc50_t};
1165 if ($t >= $dxchan->{pc50_t} + $DXProt::pc50_interval) {
1166 my $s = pc50($me, scalar DXChannel::get_all_users);
1169 $dxchan->{pc50_t} = $t;
1172 # send a ping out on this channel
1173 if ($dxchan->{pingint} && $t >= $dxchan->{pingint} + $dxchan->{lastping}) {
1174 if ($dxchan->{nopings} <= 0) {
1175 $dxchan->disconnect;
1177 addping($main::mycall, $dxchan->call);
1178 $dxchan->{nopings} -= 1;
1179 $dxchan->{lastping} = $t;
1185 if ($t - $last10 >= 10) {
1186 # clean out ephemera
1193 if ($main::systime - 3600 > $last_hour) {
1194 $last_hour = $main::systime;
1199 # finish up a pc context
1203 # some active measures
1210 my @dxchan = DXChannel->get_all();
1213 # send it if it isn't the except list and isn't isolated and still has a hop count
1214 # taking into account filtering and so on
1215 foreach $dxchan (@dxchan) {
1216 next if $dxchan == $me;
1217 next if $dxchan == $self && $self->is_node;
1218 $dxchan->dx_spot($line, $self->{isolate}, @_, $self->{call});
1226 my $isolate = shift;
1227 my ($filter, $hops);
1229 if ($self->{spotsfilter}) {
1230 ($filter, $hops) = $self->{spotsfilter}->it(@_);
1231 return unless $filter;
1233 send_prot_line($self, $filter, $hops, $isolate, $line)
1238 my ($self, $filter, $hops, $isolate, $line) = @_;
1243 $routeit =~ s/\^H\d+\^\~$/\^H$hops\^\~/;
1245 $routeit = adjust_hops($self, $line); # adjust its hop count by node name
1246 return unless $routeit;
1249 $self->send($routeit) if $routeit;
1251 $self->send($routeit) unless $self->{isolate} || $isolate;
1260 my @dxchan = DXChannel->get_all();
1262 my ($wwv_dxcc, $wwv_itu, $wwv_cq, $org_dxcc, $org_itu, $org_cq) = (0..0);
1263 my @dxcc = Prefix::extract($_[7]);
1265 $wwv_dxcc = $dxcc[1]->dxcc;
1266 $wwv_itu = $dxcc[1]->itu;
1267 $wwv_cq = $dxcc[1]->cq;
1269 @dxcc = Prefix::extract($_[8]);
1271 $org_dxcc = $dxcc[1]->dxcc;
1272 $org_itu = $dxcc[1]->itu;
1273 $org_cq = $dxcc[1]->cq;
1276 # send it if it isn't the except list and isn't isolated and still has a hop count
1277 # taking into account filtering and so on
1278 foreach $dxchan (@dxchan) {
1279 next if $dxchan == $me;
1280 next if $dxchan == $self && $self->is_node;
1282 my ($filter, $hops);
1284 $dxchan->wwv($line, $self->{isolate}, @_, $self->{call}, $wwv_dxcc, $wwv_itu, $wwv_cq, $org_dxcc, $org_itu, $org_cq);
1293 my $isolate = shift;
1294 my ($filter, $hops);
1296 if ($self->{wwvfilter}) {
1297 ($filter, $hops) = $self->{wwvfilter}->it(@_);
1298 return unless $filter;
1300 send_prot_line($self, $filter, $hops, $isolate, $line)
1307 my @dxchan = DXChannel->get_all();
1309 my ($wcy_dxcc, $wcy_itu, $wcy_cq, $org_dxcc, $org_itu, $org_cq) = (0..0);
1310 my @dxcc = Prefix::extract($_[11]);
1312 $wcy_dxcc = $dxcc[1]->dxcc;
1313 $wcy_itu = $dxcc[1]->itu;
1314 $wcy_cq = $dxcc[1]->cq;
1316 @dxcc = Prefix::extract($_[12]);
1318 $org_dxcc = $dxcc[1]->dxcc;
1319 $org_itu = $dxcc[1]->itu;
1320 $org_cq = $dxcc[1]->cq;
1323 # send it if it isn't the except list and isn't isolated and still has a hop count
1324 # taking into account filtering and so on
1325 foreach $dxchan (@dxchan) {
1326 next if $dxchan == $me;
1327 next if $dxchan == $self;
1329 $dxchan->wcy($line, $self->{isolate}, @_, $self->{call}, $wcy_dxcc, $wcy_itu, $wcy_cq, $org_dxcc, $org_itu, $org_cq);
1337 my $isolate = shift;
1338 my ($filter, $hops);
1340 if ($self->{wcyfilter}) {
1341 ($filter, $hops) = $self->{wcyfilter}->it(@_);
1342 return unless $filter;
1344 send_prot_line($self, $filter, $hops, $isolate, $line) if $self->is_clx || $self->is_spider || $self->is_dxnet;
1352 my @dxchan = DXChannel->get_all();
1356 my $text = unpad($_[2]);
1358 if ($_[3] eq '*') { # sysops
1360 } elsif ($_[3] gt ' ') { # speciality list handling
1361 my ($name) = split /\./, $_[3];
1362 $target = "$name"; # put the rest in later (if bothered)
1369 $target = "ALL" if !$target;
1371 Log('ann', $target, $_[0], $text);
1373 # obtain country codes etc
1374 my ($ann_dxcc, $ann_itu, $ann_cq, $org_dxcc, $org_itu, $org_cq) = (0..0);
1375 my @dxcc = Prefix::extract($_[0]);
1377 $ann_dxcc = $dxcc[1]->dxcc;
1378 $ann_itu = $dxcc[1]->itu;
1379 $ann_cq = $dxcc[1]->cq;
1381 @dxcc = Prefix::extract($_[4]);
1383 $org_dxcc = $dxcc[1]->dxcc;
1384 $org_itu = $dxcc[1]->itu;
1385 $org_cq = $dxcc[1]->cq;
1388 # send it if it isn't the except list and isn't isolated and still has a hop count
1389 # taking into account filtering and so on
1390 foreach $dxchan (@dxchan) {
1391 next if $dxchan == $me;
1392 next if $dxchan == $self && $self->is_node;
1394 my ($filter, $hops);
1396 $dxchan->announce($line, $self->{isolate}, $to, $target, $text, @_, $self->{call}, $ann_dxcc, $ann_itu, $ann_cq, $org_dxcc, $org_itu, $org_cq)
1404 my $isolate = shift;
1407 my ($filter, $hops);
1409 if ($self->{annfilter}) {
1410 ($filter, $hops) = $self->{annfilter}->it(@_);
1411 return unless $filter;
1413 send_prot_line($self, $filter, $hops, $isolate, $line) unless $_[1] eq $main::mycall;
1417 sub send_local_config
1425 dbg('DXProt::send_local_config') if isdbg('trace');
1428 if ($self->{isolate}) {
1429 @localnodes = ( $main::routeroot );
1431 # create a list of all the nodes that are not connected to this connection
1432 # and are not themselves isolated, this to make sure that isolated nodes
1433 # don't appear outside of this node
1434 my @dxchan = grep { $_->call ne $main::mycall && $_->call ne $self->{call} } DXChannel::get_all_nodes();
1435 @localnodes = map { my $r = Route::Node::get($_->{call}); $r ? $r : () } @dxchan if @dxchan;
1436 my @intcalls = map { $_->nodes } @localnodes if @localnodes;
1437 my $ref = Route::Node::get($self->{call});
1438 my @rnodes = $ref->nodes;
1439 for my $n (@intcalls) {
1440 push @remotenodes, Route::Node::get($n) unless grep $n eq $_, @rnodes;
1442 unshift @localnodes, $main::routeroot;
1445 send_route($self, \&pc19, scalar(@localnodes)+scalar(@remotenodes), @localnodes, @remotenodes);
1447 # get all the users connected on the above nodes and send them out
1448 foreach $n (@localnodes, @remotenodes) {
1450 send_route($self, \&pc16, 1, $n, map {my $r = Route::User::get($_); $r ? ($r) : ()} $n->users);
1452 dbg("sent a null value") if isdbg('chanerr');
1458 # route a message down an appropriate interface for a callsign
1460 # is called route(to, pcline);
1464 my ($self, $call, $line) = @_;
1466 if (ref $self && $call eq $self->{call}) {
1467 dbg("PCPROT: Trying to route back to source, dropped") if isdbg('chanerr');
1471 # always send it down the local interface if available
1472 my $dxchan = DXChannel->get($call);
1474 my $cl = Route::get($call);
1475 $dxchan = $cl->dxchan if $cl;
1477 if (ref $self && $dxchan eq $self) {
1478 dbg("PCPROT: Trying to route back to source, dropped") if isdbg('chanerr');
1484 my $routeit = adjust_hops($dxchan, $line); # adjust its hop count by node name
1486 $dxchan->send($routeit) unless $dxchan == $me;
1489 dbg("PCPROT: No route available, dropped") if isdbg('chanerr');
1493 # broadcast a message to all clusters taking into account isolation
1494 # [except those mentioned after buffer]
1497 my $s = shift; # the line to be rebroadcast
1498 my @except = @_; # to all channels EXCEPT these (dxchannel refs)
1499 my @dxchan = DXChannel::get_all_nodes();
1502 # send it if it isn't the except list and isn't isolated and still has a hop count
1503 foreach $dxchan (@dxchan) {
1504 next if grep $dxchan == $_, @except;
1505 next if $dxchan == $me;
1507 my $routeit = adjust_hops($dxchan, $s); # adjust its hop count by node name
1508 $dxchan->send($routeit) unless $dxchan->{isolate} || !$routeit;
1512 # broadcast a message to all clusters ignoring isolation
1513 # [except those mentioned after buffer]
1514 sub broadcast_all_ak1a
1516 my $s = shift; # the line to be rebroadcast
1517 my @except = @_; # to all channels EXCEPT these (dxchannel refs)
1518 my @dxchan = DXChannel::get_all_nodes();
1521 # send it if it isn't the except list and isn't isolated and still has a hop count
1522 foreach $dxchan (@dxchan) {
1523 next if grep $dxchan == $_, @except;
1524 next if $dxchan == $me;
1526 my $routeit = adjust_hops($dxchan, $s); # adjust its hop count by node name
1527 $dxchan->send($routeit);
1531 # broadcast to all users
1532 # storing the spot or whatever until it is in a state to receive it
1535 my $s = shift; # the line to be rebroadcast
1536 my $sort = shift; # the type of transmission
1537 my $fref = shift; # a reference to an object to filter on
1538 my @except = @_; # to all channels EXCEPT these (dxchannel refs)
1539 my @dxchan = DXChannel::get_all_users();
1543 foreach $dxchan (@dxchan) {
1544 next if grep $dxchan == $_, @except;
1547 broadcast_list($s, $sort, $fref, @out);
1550 # broadcast to a list of users
1558 foreach $dxchan (@_) {
1560 next if $dxchan == $me;
1562 if ($sort eq 'dx') {
1563 next unless $dxchan->{dx};
1564 ($filter) = $dxchan->{spotsfilter}->it(@{$fref}) if ref $fref;
1565 next unless $filter;
1567 next if $sort eq 'ann' && !$dxchan->{ann} && $s !~ /^To\s+LOCAL\s+de\s+(?:$main::myalias|$main::mycall)/i;
1568 next if $sort eq 'wwv' && !$dxchan->{wwv};
1569 next if $sort eq 'wcy' && !$dxchan->{wcy};
1570 next if $sort eq 'wx' && !$dxchan->{wx};
1572 $s =~ s/\a//og unless $dxchan->{beep};
1574 if ($dxchan->{state} eq 'prompt' || $dxchan->{state} eq 'talk') {
1584 # obtain the hops from the list for this callsign and pc no
1590 my $hops = $DXProt::hopcount{$pcno};
1591 $hops = $DXProt::def_hopcount if !$hops;
1596 # adjust the hop count on a per node basis using the user loadable
1597 # hop table if available or else decrement an existing one
1604 my $call = $self->{call};
1607 if (($hops) = $s =~ /\^H(\d+)\^~?$/o) {
1608 my ($pcno) = $s =~ /^PC(\d\d)/o;
1609 confess "$call called adjust_hops with '$s'" unless $pcno;
1610 my $ref = $nodehops{$call} if %nodehops;
1612 my $newhops = $ref->{$pcno};
1613 return "" if defined $newhops && $newhops == 0;
1614 $newhops = $ref->{default} unless $newhops;
1615 return "" if defined $newhops && $newhops == 0;
1616 $newhops = $hops if !$newhops;
1617 $s =~ s/\^H(\d+)(\^~?)$/\^H$newhops$2/ if $newhops;
1619 # simply decrement it
1621 return "" if !$hops;
1622 $s =~ s/\^H(\d+)(\^~?)$/\^H$hops$2/ if $hops;
1634 return $self->msg('lh1') unless -e "$main::data/hop_table.pl";
1635 do "$main::data/hop_table.pl";
1641 # add a ping request to the ping queues
1644 my ($from, $to) = @_;
1645 my $ref = $pings{$to} || [];
1648 $r->{t} = [ gettimeofday ];
1649 route(undef, $to, pc51($to, $main::mycall, 1));
1654 # add a rcmd request to the rcmd queues
1657 my ($self, $to, $cmd) = @_;
1660 $r->{call} = $self->{call};
1661 $r->{t} = $main::systime;
1665 my $ref = Route::Node::get($to);
1666 my $dxchan = $ref->dxchan;
1667 if ($dxchan && $dxchan->is_clx) {
1668 route(undef, $to, pc84($main::mycall, $to, $self->{call}, $cmd));
1670 route(undef, $to, pc34($main::mycall, $to, $cmd));
1677 my $pc39flag = shift;
1678 my $call = $self->call;
1680 unless ($pc39flag && $pc39flag == 1) {
1681 $self->send_now("D", DXProt::pc39($main::mycall, $self->msg('disc1', "System Op")));
1685 my $node = Route::Node::get($call);
1688 @rout = $node->del_nodes; # at the next level
1689 @rout = $node->del($main::routeroot);
1692 # unbusy and stop and outgoing mail
1693 my $mref = DXMsg::get_busy($call);
1694 $mref->stop_msg($call) if $mref;
1696 # broadcast to all other nodes that all the nodes connected to via me are gone
1697 unless ($pc39flag && $pc39flag == 2) {
1698 $self->route_pc21(@rout) if @rout;
1701 # remove outstanding pings
1702 delete $pings{$call};
1704 # I was the last node visited
1705 $self->user->node($main::mycall);
1707 # send info to all logged in thingies
1708 $self->tell_login('logoutn');
1710 Log('DXProt', $call . " Disconnected");
1712 $self->SUPER::disconnect;
1717 # send a talk message to this thingy
1721 my ($self, $from, $to, $via, $line) = @_;
1723 $line =~ s/\^/\\5E/g; # remove any ^ characters
1724 $self->send(DXProt::pc10($from, $to, $via, $line));
1725 Log('talk', $self->call, $from, $via?$via:$main::mycall, $line);
1728 # send it if it isn't the except list and isn't isolated and still has a hop count
1729 # taking into account filtering and so on
1733 my $generate = shift;
1734 my $no = shift; # the no of things to filter on
1736 my ($filter, $hops);
1739 for (; @_ && $no; $no--) {
1742 if ($self->{routefilter}) {
1745 ($filter, $hops) = $self->{routefilter}->it($self->{call}, $self->{dxcc}, $self->{itu}, $self->{cq}, $r->call, $r->dxcc, $r->itu, $r->cq);
1749 dbg("DXPROT: $self->{call}/" . $r->call . " rejected by output filter") if isdbg('chanerr');
1752 dbg("was sent a null value") if isdbg('chanerr');
1759 foreach my $line (&$generate(@rin, @_)) {
1762 $routeit =~ s/\^H\d+\^\~$/\^H$hops\^\~/;
1764 $routeit = adjust_hops($self, $line); # adjust its hop count by node name
1765 next unless $routeit;
1767 $self->send($routeit) if $self->{routefilter} || !$self->{isolate};
1775 my $generate = shift;
1776 my @dxchan = DXChannel::get_all_nodes();
1780 foreach $dxchan (@dxchan) {
1781 next if $dxchan == $self;
1782 next if $dxchan == $me;
1783 if ($dxchan->{routefilter} || !$self->{isolate}) {
1784 $dxchan->send_route($generate, @_)
1786 dbg('DXPROT: isolated') if isdbg('chanerr');
1794 broadcast_route($self, \&pc16, 1, @_);
1800 broadcast_route($self, \&pc17, 1, @_);
1806 broadcast_route($self, \&pc19, scalar @_, @_);
1812 broadcast_route($self, \&pc21, scalar @_, @_);
1818 broadcast_route($self, \&pc24, 1, @_);
1824 broadcast_route($self, \&pc41, 1, @_);
1830 broadcast_route($self, \&pc50, 1, @_);
1837 my ($filter, $hops) = (1, 1);
1839 if ($self->{inroutefilter}) {
1840 ($filter, $hops) = $self->{inroutefilter}->it($self->{call}, $self->{dxcc}, $self->{itu}, $self->{cq}, $r->call, $r->dxcc, $r->itu, $r->cq);
1841 dbg("PCPROT: $self->{call}/" . $r->call . ' rejected by in_filter_route') if !$filter && isdbg('chanerr');
1851 $s =~ s/\^H\d\d?\^?~?$//;
1852 return 1 if exists $eph{$s};
1853 $eph{$s} = $main::systime;
1861 while (($key, $val) = each %eph) {
1862 if ($main::systime - $val > 90) {