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1 #!/usr/bin/perl
2 #
3 # This module impliments the protocal mode for a dx cluster
4 #
5 # Copyright (c) 1998 Dirk Koopman G1TLH
6 #
7 # $Id$
8
9
10 package DXProt;
11
12 @ISA = qw(DXChannel);
13
14 use DXUtil;
15 use DXChannel;
16 use DXUser;
17 use DXM;
18 use DXProtVars;
19 use DXCommandmode;
20 use DXLog;
21 use Spot;
22 use DXProtout;
23 use DXDebug;
24 use Filter;
25 use Local;
26 use DXDb;
27 use AnnTalk;
28 use Geomag;
29 use WCY;
30 use Time::HiRes qw(gettimeofday tv_interval);
31 use BadWords;
32 use DXHash;
33 use Route;
34 use Route::Node;
35 use Script;
36
37 use strict;
38
39 use vars qw($VERSION $BRANCH);
40 $VERSION = sprintf( "%d.%03d", q$Revision$ =~ /(\d+)\.(\d+)/ );
41 $BRANCH = sprintf( "%d.%03d", q$Revision$ =~ /\d+\.\d+\.(\d+)\.(\d+)/  || (0,0));
42 $main::build += $VERSION;
43 $main::branch += $BRANCH;
44
45 use vars qw($pc11_max_age $pc23_max_age $last_pc50 $eph_restime $eph_info_restime $eph_pc34_restime
46                         $last_hour $last10 %eph  %pings %rcmds $ann_to_talk
47                         %nodehops $baddx $badspotter $badnode $censorpc $rspfcheck
48                         $allowzero $decode_dk0wcy $send_opernam @checklist);
49
50 $pc11_max_age = 1*3600;                 # the maximum age for an incoming 'real-time' pc11
51 $pc23_max_age = 1*3600;                 # the maximum age for an incoming 'real-time' pc23
52
53 $last_hour = time;                              # last time I did an hourly periodic update
54 %pings = ();                    # outstanding ping requests outbound
55 %rcmds = ();                    # outstanding rcmd requests outbound
56 %nodehops = ();                 # node specific hop control
57 $censorpc = 1;                                  # Do a BadWords::check on text fields and reject things
58                                                                 # loads of 'bad things'
59 $baddx = new DXHash "baddx";
60 $badspotter = new DXHash "badspotter";
61 $badnode = new DXHash "badnode";
62 $last10 = $last_pc50 = time;
63 $ann_to_talk = 1;
64 $rspfcheck = 1;
65 $eph_restime = 180;
66 $eph_info_restime = 60*60;
67 $eph_pc34_restime = 30;
68
69 @checklist = 
70 (
71  [ qw(c c m bp bc c) ],                 # pc10
72  [ qw(f m d t m c c h) ],               # pc11
73  [ qw(c bc m bp bm p h) ],              # pc12
74  [ qw(c h) ],                                   # 
75  [ qw(c h) ],                                   # 
76  [ qw(c m h) ],                                 # 
77  undef ,                                                # pc16 has to be validated manually
78  [ qw(c c h) ],                                 # pc17
79  [ qw(m n) ],                                   # pc18
80  undef ,                                                # pc19 has to be validated manually
81  undef ,                                                # pc20 no validation
82  [ qw(c m h) ],                                 # pc21
83  undef ,                                                # pc22 no validation
84  [ qw(d n n n n m c c h) ],             # pc23
85  [ qw(c p h) ],                                 # pc24
86  [ qw(c c n n) ],                               # pc25
87  [ qw(f m d t m c c bc) ],              # pc26
88  [ qw(d n n n n m c c bc) ],    # pc27
89  [ qw(c c m c d t p m bp n p bp bc) ], # pc28
90  [ qw(c c n m) ],                               # pc29
91  [ qw(c c n) ],                                 # pc30
92  [ qw(c c n) ],                                 # pc31
93  [ qw(c c n) ],                                 # pc32
94  [ qw(c c n) ],                                 # pc33
95  [ qw(c c m) ],                                 # pc34
96  [ qw(c c m) ],                                 # pc35
97  [ qw(c c m) ],                                 # pc36
98  [ qw(c c n m) ],                               # pc37
99  undef,                                                 # pc38 not interested
100  [ qw(c m) ],                                   # pc39
101  [ qw(c c m p n) ],                             # pc40
102  [ qw(c n m h) ],                               # pc41
103  [ qw(c c n) ],                                 # pc42
104  undef,                                                 # pc43 don't handle it
105  [ qw(c c n m m c) ],                   # pc44
106  [ qw(c c n m) ],                               # pc45
107  [ qw(c c n) ],                                 # pc46
108  undef,                                                 # pc47
109  undef,                                                 # pc48
110  [ qw(c m h) ],                                 # pc49
111  [ qw(c n h) ],                                 # pc50
112  [ qw(c c n) ],                                 # pc51
113  undef,
114  undef,
115  undef,
116  undef,
117  undef,
118  undef,
119  undef,
120  undef,
121  undef,                                                 # pc60
122  undef,
123  undef,
124  undef,
125  undef,
126  undef,
127  undef,
128  undef,
129  undef,
130  undef,
131  undef,                                                 # pc70
132  undef,
133  undef,
134  [ qw(d n n n n n n m m m c c h) ],     # pc73
135  undef,
136  undef,
137  undef,
138  undef,
139  undef,
140  undef,
141  undef,                                                 # pc80
142  undef,
143  undef,
144  undef,
145  [ qw(c c c m) ],                               # pc84
146  [ qw(c c c m) ],                               # pc85
147 );
148
149 # use the entry in the check list to check the field list presented
150 # return OK if line NOT in check list (for now)
151 sub check
152 {
153         my $n = shift;
154         $n -= 10;
155         return 0 if $n < 0 || $n > @checklist; 
156         my $ref = $checklist[$n];
157         return 0 unless ref $ref;
158         
159         my $i;
160         shift;    # not interested in the first field
161         for ($i = 0; $i < @$ref; $i++) {
162                 my ($blank, $act) = $$ref[$i] =~ /^(b?)(\w)$/;
163                 return 0 unless $act;
164                 next if $blank && $_[$i] =~ /^[ \*]$/;
165                 if ($act eq 'c') {
166                         return $i+1 unless is_callsign($_[$i]);
167                 } elsif ($act eq 'm') {
168                         return $i+1 unless is_pctext($_[$i]);
169                 } elsif ($act eq 'p') {
170                         return $i+1 unless is_pcflag($_[$i]);
171                 } elsif ($act eq 'f') {
172                         return $i+1 unless is_freq($_[$i]);
173                 } elsif ($act eq 'n') {
174                         return $i+1 unless $_[$i] =~ /^[\d ]+$/;
175                 } elsif ($act eq 'h') {
176                         return $i+1 unless $_[$i] =~ /^H\d\d?$/;
177                 } elsif ($act eq 'd') {
178                         return $i+1 unless $_[$i] =~ /^\s*\d+-\w\w\w-[12][90]\d\d$/;
179                 } elsif ($act eq 't') {
180                         return $i+1 unless $_[$i] =~ /^[012]\d[012345]\dZ$/;
181                 }
182         }
183         return 0;
184 }
185
186 sub init
187 {
188         do "$main::data/hop_table.pl" if -e "$main::data/hop_table.pl";
189         confess $@ if $@;
190 }
191
192 #
193 # obtain a new connection this is derived from dxchannel
194 #
195
196 sub new 
197 {
198         my $self = DXChannel::alloc(@_);
199
200         # add this node to the table, the values get filled in later
201         my $pkg = shift;
202         my $call = shift;
203         $main::routeroot->add($call, '5000', Route::here(1)) if $call ne $main::mycall;
204
205         return $self;
206 }
207
208 # this is how a pc connection starts (for an incoming connection)
209 # issue a PC38 followed by a PC18, then wait for a PC20 (remembering
210 # all the crap that comes between).
211 sub start
212 {
213         my ($self, $line, $sort) = @_;
214         my $call = $self->{call};
215         my $user = $self->{user};
216
217         # log it
218         my $host = $self->{conn}->{peerhost} || "unknown";
219         Log('DXProt', "$call connected from $host");
220         
221         # remember type of connection
222         $self->{consort} = $line;
223         $self->{outbound} = $sort eq 'O';
224         my $priv = $user->priv;
225         $priv = $user->priv(1) unless $priv;
226         $self->{priv} = $priv;     # other clusters can always be 'normal' users
227         $self->{lang} = $user->lang || 'en';
228         $self->{isolate} = $user->{isolate};
229         $self->{consort} = $line;       # save the connection type
230         $self->{here} = 1;
231         $self->{width} = 80;
232
233         # sort out registration
234         $self->{registered} = 1;
235
236         # get the output filters
237         $self->{spotsfilter} = Filter::read_in('spots', $call, 0) || Filter::read_in('spots', 'node_default', 0);
238         $self->{wwvfilter} = Filter::read_in('wwv', $call, 0) || Filter::read_in('wwv', 'node_default', 0);
239         $self->{wcyfilter} = Filter::read_in('wcy', $call, 0) || Filter::read_in('wcy', 'node_default', 0);
240         $self->{annfilter} = Filter::read_in('ann', $call, 0) || Filter::read_in('ann', 'node_default', 0) ;
241         $self->{routefilter} = Filter::read_in('route', $call, 0) || Filter::read_in('route', 'node_default', 0) unless $self->{isolate} ;
242
243
244         # get the INPUT filters (these only pertain to Clusters)
245         $self->{inspotsfilter} = Filter::read_in('spots', $call, 1) || Filter::read_in('spots', 'node_default', 1);
246         $self->{inwwvfilter} = Filter::read_in('wwv', $call, 1) || Filter::read_in('wwv', 'node_default', 1);
247         $self->{inwcyfilter} = Filter::read_in('wcy', $call, 1) || Filter::read_in('wcy', 'node_default', 1);
248         $self->{inannfilter} = Filter::read_in('ann', $call, 1) || Filter::read_in('ann', 'node_default', 1);
249         $self->{inroutefilter} = Filter::read_in('route', $call, 1) || Filter::read_in('route', 'node_default', 1) unless $self->{isolate};
250         
251         # set unbuffered and no echo
252         $self->send_now('B',"0");
253         $self->send_now('E',"0");
254         $self->conn->echo(0) if $self->conn->can('echo');
255         
256         # ping neighbour node stuff
257         my $ping = $user->pingint;
258         $ping = 5*60 unless defined $ping;
259         $self->{pingint} = $ping;
260         $self->{nopings} = $user->nopings || 2;
261         $self->{pingtime} = [ ];
262         $self->{pingave} = 999;
263         $self->{metric} ||= 100;
264         $self->{lastping} = $main::systime;
265
266         # send initialisation string
267         unless ($self->{outbound}) {
268                 $self->sendinit;
269         }
270         
271         $self->state('init');
272         $self->{pc50_t} = $main::systime;
273
274         # send info to all logged in thingies
275         $self->tell_login('loginn');
276
277         # run a script send the output to the debug file
278         my $script = new Script(lc $call) || new Script('node_default');
279         $script->run($self) if $script;
280 }
281
282 #
283 # send outgoing 'challenge'
284 #
285
286 sub sendinit
287 {
288         my $self = shift;
289         $self->send(pc18());
290 }
291
292 #
293 # This is the normal pcxx despatcher
294 #
295 sub normal
296 {
297         my ($self, $line) = @_;
298         my @field = split /\^/, $line;
299         return unless @field;
300         
301         pop @field if $field[-1] eq '~';
302         
303 #       print join(',', @field), "\n";
304                                                 
305         
306         # process PC frames, this will fail unless the frame starts PCnn
307         my ($pcno) = $field[0] =~ /^PC(\d\d)/; # just get the number
308         return unless $pcno;
309         return if $pcno < 10 || $pcno > 99;
310
311         # check for and dump bad protocol messages
312         my $n = check($pcno, @field);
313         if ($n) {
314                 dbg("PCPROT: bad field $n, dumped (" . parray($checklist[$pcno-10]) . ")") if isdbg('chanerr');
315                 return;
316         }
317
318         # local processing 1
319         my $pcr;
320         eval {
321                 $pcr = Local::pcprot($self, $pcno, @field);
322         };
323 #       dbg("Local::pcprot error $@") if isdbg('local') if $@;
324         return if $pcr;
325         
326  SWITCH: {
327                 if ($pcno == 10) {              # incoming talk
328
329                         # rsfp check
330                         return if $rspfcheck and !$self->rspfcheck(0, $field[6], $field[1]);
331                         
332                         # will we allow it at all?
333                         if ($censorpc) {
334                                 my @bad;
335                                 if (@bad = BadWords::check($field[3])) {
336                                         dbg("PCPROT: Bad words: @bad, dropped") if isdbg('chanerr');
337                                         return;
338                                 }
339                         }
340
341                         # is it for me or one of mine?
342                         my ($from, $to, $via, $call, $dxchan);
343                         $from = $field[1];
344                         if ($field[5] gt ' ') {
345                                 $via = $field[2];
346                                 $to = $field[5];
347                         } else {
348                                 $to = $field[2];
349                         }
350
351                         # if this is a 'nodx' node then ignore it
352                         if ($badnode->in($field[6]) || ($via && $badnode->in($via))) {
353                                 dbg("PCPROT: Bad Node, dropped") if isdbg('chanerr');
354                                 return;
355                         }
356
357                         # if this is a 'bad spotter' user then ignore it
358                         my $nossid = $from;
359                         $nossid =~ s/-\d+$//;
360                         if ($badspotter->in($nossid)) {
361                                 dbg("PCPROT: Bad Spotter, dropped") if isdbg('chanerr');
362                                 return;
363                         }
364
365                         # if we are converting announces to talk is it a dup?
366                         if ($ann_to_talk) {
367                                 if (AnnTalk::is_talk_candidate($from, $field[3]) && AnnTalk::dup($from, $to, $field[3])) {
368                                         dbg("DXPROT: Dupe talk from announce, dropped") if isdbg('chanerr');
369                                         return;
370                                 }
371                         }
372
373                         # it is here and logged on
374                         $dxchan = DXChannel->get($main::myalias) if $to eq $main::mycall;
375                         $dxchan = DXChannel->get($to) unless $dxchan;
376                         if ($dxchan && $dxchan->is_user) {
377                                 $field[3] =~ s/\%5E/^/g;
378                                 $dxchan->talk($from, $to, $via, $field[3]);
379                                 return;
380                         }
381
382                         # is it elsewhere, visible on the cluster via the to address?
383                         # note: this discards the via unless the to address is on
384                         # the via address
385                         my ($ref, $vref);
386                         if ($ref = Route::get($to)) {
387                                 $vref = Route::Node::get($via) if $via;
388                                 $vref = undef unless $vref && grep $to eq $_, $vref->users;
389                                 $ref->dxchan->talk($from, $to, $vref ? $via : undef, $field[3], $field[6]);
390                                 return;
391                         }
392
393                         # not visible here, send a message of condolence
394                         $vref = undef;
395                         $ref = Route::get($from);
396                         $vref = $ref = Route::Node::get($field[6]) unless $ref; 
397                         if ($ref) {
398                                 $dxchan = $ref->dxchan;
399                                 $dxchan->talk($main::mycall, $from, $vref ? $vref->call : undef, $dxchan->msg('talknh', $to) );
400                         }
401                         return;
402                 }
403                 
404                 if ($pcno == 11 || $pcno == 26) { # dx spot
405
406                         # route 'foreign' pc26s 
407                         if ($pcno == 26) {
408                                 if ($field[7] ne $main::mycall) {
409                                         $self->route($field[7], $line);
410                                         return;
411                                 }
412                         }
413                         
414                         # rsfp check
415 #                       return if $rspfcheck and !$self->rspfcheck(1, $field[7], $field[6]);
416
417                         # if this is a 'nodx' node then ignore it
418                         if ($badnode->in($field[7])) {
419                                 dbg("PCPROT: Bad Node, dropped") if isdbg('chanerr');
420                                 return;
421                         }
422                         
423                         # if this is a 'bad spotter' user then ignore it
424                         my $nossid = $field[6];
425                         $nossid =~ s/-\d+$//;
426                         if ($badspotter->in($nossid)) {
427                                 dbg("PCPROT: Bad Spotter, dropped") if isdbg('chanerr');
428                                 return;
429                         }
430                         
431                         # convert the date to a unix date
432                         my $d = cltounix($field[3], $field[4]);
433                         # bang out (and don't pass on) if date is invalid or the spot is too old (or too young)
434                         if (!$d || ($pcno == 11 && ($d < $main::systime - $pc11_max_age || $d > $main::systime + 900))) {
435                                 dbg("PCPROT: Spot ignored, invalid date or out of range ($field[3] $field[4])\n") if isdbg('chanerr');
436                                 return;
437                         }
438
439                         # is it 'baddx'
440                         if ($baddx->in($field[2]) || BadWords::check($field[2]) || $field[2] =~ /COCK/) {
441                                 dbg("PCPROT: Bad DX spot, ignored") if isdbg('chanerr');
442                                 return;
443                         }
444                         
445                         # do some de-duping
446                         $field[5] =~ s/^\s+//;      # take any leading blanks off
447                         $field[2] = unpad($field[2]);   # take off leading and trailing blanks from spotted callsign
448                         if ($field[2] =~ /BUST\w*$/) {
449                                 dbg("PCPROT: useless 'BUSTED' spot") if isdbg('chanerr');
450                                 return;
451                         }
452                         if ($censorpc) {
453                                 my @bad;
454                                 if (@bad = BadWords::check($field[5])) {
455                                         dbg("PCPROT: Bad words: @bad, dropped") if isdbg('chanerr');
456                                         return;
457                                 }
458                         }
459
460
461                         my @spot = Spot::prepare($field[1], $field[2], $d, $field[5], $field[6], $field[7]);
462                         # global spot filtering on INPUT
463                         if ($self->{inspotsfilter}) {
464                                 my ($filter, $hops) = $self->{inspotsfilter}->it(@spot);
465                                 unless ($filter) {
466                                         dbg("PCPROT: Rejected by input spot filter") if isdbg('chanerr');
467                                         return;
468                                 }
469                         }
470
471                         # this goes after the input filtering, but before the add
472                         # so that if it is input filtered, it isn't added to the dup
473                         # list. This allows it to come in from a "legitimate" source
474                         if (Spot::dup($field[1], $field[2], $d, $field[5])) {
475                                 dbg("PCPROT: Duplicate Spot ignored\n") if isdbg('chanerr');
476                                 return;
477                         }
478
479                         # add it 
480                         Spot::add(@spot);
481
482             #
483                         # @spot at this point contains:-
484             # freq, spotted call, time, text, spotter, spotted cc, spotters cc, orig node
485                         # then  spotted itu, spotted cq, spotters itu, spotters cq
486                         # you should be able to route on any of these
487             #
488                         
489                         # fix up qra locators of known users 
490                         my $user = DXUser->get_current($spot[4]);
491                         if ($user) {
492                                 my $qra = $user->qra;
493                                 unless ($qra && is_qra($qra)) {
494                                         my $lat = $user->lat;
495                                         my $long = $user->long;
496                                         if (defined $lat && defined $long) {
497                                                 $user->qra(DXBearing::lltoqra($lat, $long)); 
498                                                 $user->put;
499                                         }
500                                 }
501
502                                 # send a remote command to a distant cluster if it is visible and there is no
503                                 # qra locator and we havn't done it for a month.
504
505                                 unless ($user->qra) {
506                                         my $node;
507                                         my $to = $user->homenode;
508                                         my $last = $user->lastoper || 0;
509                                         if ($send_opernam && $to && $to ne $main::mycall && $main::systime > $last + $DXUser::lastoperinterval && ($node = Route::Node::get($to)) ) {
510                                                 my $cmd = "forward/opernam $spot[4]";
511                                                 # send the rcmd but we aren't interested in the replies...
512                                                 my $dxchan = $node->dxchan;
513                                                 if ($dxchan && $dxchan->is_clx) {
514                                                         route(undef, $to, pc84($main::mycall, $to, $main::mycall, $cmd));
515                                                 } else {
516                                                         route(undef, $to, pc34($main::mycall, $to, $cmd));
517                                                 }
518                                                 if ($to ne $field[7]) {
519                                                         $to = $field[7];
520                                                         $node = Route::Node::get($to);
521                                                         if ($node) {
522                                                                 $dxchan = $node->dxchan;
523                                                                 if ($dxchan && $dxchan->is_clx) {
524                                                                         route(undef, $to, pc84($main::mycall, $to, $main::mycall, $cmd));
525                                                                 } else {
526                                                                         route(undef, $to, pc34($main::mycall, $to, $cmd));
527                                                                 }
528                                                         }
529                                                 }
530                                                 $user->lastoper($main::systime);
531                                                 $user->put;
532                                         }
533                                 }
534                         }
535                                 
536                         # local processing 
537                         my $r;
538                         eval {
539                                 $r = Local::spot($self, @spot);
540                         };
541 #                       dbg("Local::spot1 error $@") if isdbg('local') if $@;
542                         return if $r;
543
544                         # DON'T be silly and send on PC26s!
545                         return if $pcno == 26;
546
547                         # send out the filtered spots
548                         send_dx_spot($self, $line, @spot) if @spot;
549                         return;
550                 }
551                 
552                 if ($pcno == 12) {              # announces
553
554 #                       return if $rspfcheck and !$self->rspfcheck(1, $field[5], $field[1]);
555
556                         # announce duplicate checking
557                         $field[3] =~ s/^\s+//;  # remove leading blanks
558
559                         if ($censorpc) {
560                                 my @bad;
561                                 if (@bad = BadWords::check($field[3])) {
562                                         dbg("PCPROT: Bad words: @bad, dropped") if isdbg('chanerr');
563                                         return;
564                                 }
565                         }
566
567                         # if this is a 'nodx' node then ignore it
568                         if ($badnode->in($field[5])) {
569                                 dbg("PCPROT: Bad Node, dropped") if isdbg('chanerr');
570                                 return;
571                         }
572
573                         # if this is a 'bad spotter' user then ignore it
574                         my $nossid = $field[1];
575                         $nossid =~ s/-\d+$//;
576                         if ($badspotter->in($nossid)) {
577                                 dbg("PCPROT: Bad Spotter, dropped") if isdbg('chanerr');
578                                 return;
579                         }
580
581                         if ($field[2] eq '*' || $field[2] eq $main::mycall) {
582
583
584                                 # here's a bit of fun, convert incoming ann with a callsign in the first word
585                                 # or one saying 'to <call>' to a talk if we can route to the recipient
586                                 if ($ann_to_talk) {
587                                         my $call = AnnTalk::is_talk_candidate($field[1], $field[3]);
588                                         if ($call) {
589                                                 my $ref = Route::get($call);
590                                                 if ($ref) {
591                                                         my $dxchan = $ref->dxchan;
592                                                         $dxchan->talk($field[1], $call, undef, $field[3], $field[5]) if $dxchan != $self;
593                                                         return;
594                                                 }
595                                         }
596                                 }
597         
598                                 # send it
599                                 $self->send_announce($line, @field[1..6]);
600                         } else {
601                                 $self->route($field[2], $line);
602                         }
603                         return;
604                 }
605                 
606                 if ($pcno == 13) {
607                         last SWITCH;
608                 }
609                 if ($pcno == 14) {
610                         last SWITCH;
611                 }
612                 if ($pcno == 15) {
613                         last SWITCH;
614                 }
615                 
616                 if ($pcno == 16) {              # add a user
617
618                         if (eph_dup($line)) {
619                                 dbg("PCPROT: dup PC16 detected") if isdbg('chanerr');
620                                 return;
621                         }
622
623                         # general checks
624                         my $dxchan;
625                         my $ncall = $field[1];
626                         my $newline = "PC16^";
627                         
628                         if ($ncall eq $main::mycall) {
629                                 dbg("PCPROT: trying to alter config on this node from outside!") if isdbg('chanerr');
630                                 return;
631                         }
632                         my $parent = Route::Node::get($ncall); 
633                         unless ($parent) {
634                                 dbg("PCPROT: Node $ncall not in config") if isdbg('chanerr');
635                                 return;
636                         }
637                         $dxchan = $parent->dxchan;
638                         if ($dxchan && $dxchan ne $self) {
639                                 dbg("PCPROT: PC16 from $self->{call} trying to alter locally connected $ncall, ignored!") if isdbg('chanerr');
640                                 return;
641                         }
642
643                         # input filter if required
644                         return unless $self->in_filter_route($parent);
645                         
646                         my $i;
647                         my @rout;
648                         for ($i = 2; $i < $#field; $i++) {
649                                 my ($call, $conf, $here) = $field[$i] =~ /^(\S+) (\S) (\d)/o;
650                                 next unless $call && $conf && defined $here && is_callsign($call);
651                                 next if $call eq $main::mycall;
652
653                                 eph_del_regex("^PC17\\^$call\\^$ncall");
654                                 
655                                 $conf = $conf eq '*';
656
657                                 # reject this if we think it is a node already
658                                 my $r = Route::Node::get($call);
659                                 my $u = DXUser->get_current($call) unless $r;
660                                 if ($r || ($u && $u->is_node)) {
661                                         dbg("PCPROT: $call is a node") if isdbg('chanerr');
662                                         next;
663                                 }
664                                 
665                                 $r = Route::User::get($call);
666                                 my $flags = Route::here($here)|Route::conf($conf);
667                                 
668                                 if ($r) {
669                                         if ($r->flags != $flags) {
670                                                 $r->flags($flags);
671                                                 push @rout, $r;
672                                         }
673                                         $r->addparent($parent);
674                                 } else {
675                                         push @rout, $parent->add_user($call, $flags);
676                                 }
677                                 
678                                 # add this station to the user database, if required
679                                 $call =~ s/-\d+$//o;        # remove ssid for users
680                                 my $user = DXUser->get_current($call);
681                                 $user = DXUser->new($call) if !$user;
682                                 $user->homenode($parent->call) if !$user->homenode;
683                                 $user->node($parent->call);
684                                 $user->lastin($main::systime) unless DXChannel->get($call);
685                                 $user->put;
686                         }
687                         
688                         # queue up any messages (look for privates only)
689                         DXMsg::queue_msg(1) if $self->state eq 'normal';     
690
691                         $self->route_pc16($parent, @rout) if @rout;
692                         return;
693                 }
694                 
695                 if ($pcno == 17) {              # remove a user
696                         my $dxchan;
697                         my $ncall = $field[2];
698                         my $ucall = $field[1];
699
700                         eph_del_regex("^PC16\\^$ncall.*$ucall");
701                         
702                         if ($ncall eq $main::mycall) {
703                                 dbg("PCPROT: trying to alter config on this node from outside!") if isdbg('chanerr');
704                                 return;
705                         }
706
707                         my $uref = Route::User::get($ucall);
708                         unless ($uref) {
709                                 dbg("PCPROT: Route::User $ucall not in config") if isdbg('chanerr');
710                                 return;
711                         }
712                         my $parent = Route::Node::get($ncall);
713                         unless ($parent) {
714                                 dbg("PCPROT: Route::Node $ncall not in config") if isdbg('chanerr');
715                                 return;
716                         }                       
717
718                         $dxchan = $parent->dxchan;
719                         if ($dxchan && $dxchan ne $self) {
720                                 dbg("PCPROT: PC17 from $self->{call} trying to alter locally connected $ncall, ignored!") if isdbg('chanerr');
721                                 return;
722                         }
723
724                         # input filter if required
725                         return unless $self->in_filter_route($parent);
726                         
727                         $parent->del_user($uref);
728
729                         if (eph_dup($line)) {
730                                 dbg("PCPROT: dup PC17 detected") if isdbg('chanerr');
731                                 return;
732                         }
733
734                         $self->route_pc17($parent, $uref);
735                         return;
736                 }
737                 
738                 if ($pcno == 18) {              # link request
739                         $self->state('init');   
740
741                         # record the type and version offered
742                         if ($field[1] =~ /DXSpider Version: (\d+\.\d+) Build: (\d+\.\d+)/) {
743                                 $self->version(53 + $1);
744                                 $self->user->version(53 + $1);
745                                 $self->build(0 + $2);
746                                 $self->user->build(0 + $2);
747                                 unless ($self->is_spider) {
748                                         $self->user->sort('S');
749                                         $self->user->put;
750                                         $self->sort('S');
751                                 }
752                         } else {
753                                 $self->version(50.0);
754                                 $self->version($field[2] / 100) if $field[2] && $field[2] =~ /^\d+$/;
755                                 $self->user->version($self->version);
756                         }
757
758                         # first clear out any nodes on this dxchannel
759                         my $parent = Route::Node::get($self->{call});
760                         my @rout = $parent->del_nodes;
761                         $self->route_pc21(@rout, $parent) if @rout;
762                         $self->send_local_config();
763                         $self->send(pc20());
764                         return;             # we don't pass these on
765                 }
766                 
767                 if ($pcno == 19) {              # incoming cluster list
768                         my $i;
769                         my $newline = "PC19^";
770
771                         if (eph_dup($line)) {
772                                 dbg("PCPROT: dup PC19 detected") if isdbg('chanerr');
773                                 return;
774                         }
775
776                         # new routing list
777                         my @rout;
778                         my $parent = Route::Node::get($self->{call});
779                         unless ($parent) {
780                                 dbg("DXPROT: my parent $self->{call} has disappeared");
781                                 $self->disconnect;
782                                 return;
783                         }
784
785                         # parse the PC19
786                         for ($i = 1; $i < $#field-1; $i += 4) {
787                                 my $here = $field[$i];
788                                 my $call = uc $field[$i+1];
789                                 my $conf = $field[$i+2];
790                                 my $ver = $field[$i+3];
791                                 next unless defined $here && defined $conf && is_callsign($call);
792
793                                 eph_del_regex("^PC(?:21\\^$call|17\\^[^\\^]+\\^$call)");
794                                 
795                                 # check for sane parameters
796 #                               $ver = 5000 if $ver eq '0000';
797                                 next if $ver < 5000; # only works with version 5 software
798                                 next if length $call < 3; # min 3 letter callsigns
799                                 next if $call eq $main::mycall;
800
801                                 # check that this PC19 isn't trying to alter the wrong dxchan
802                                 my $dxchan = DXChannel->get($call);
803                                 if ($dxchan && $dxchan != $self) {
804                                         dbg("PCPROT: PC19 from $self->{call} trying to alter wrong locally connected $call, ignored!") if isdbg('chanerr');
805                                         next;
806                                 }
807
808                                 # update it if required
809                                 my $r = Route::Node::get($call);
810                                 my $flags = Route::here($here)|Route::conf($conf);
811                                 if ($r) {
812                                         my $ar;
813                                         if ($call ne $parent->call) {
814                                                 if ($self->in_filter_route($r)) {
815                                                         $ar = $parent->add($call, $ver, $flags);
816                                                         push @rout, $ar if $ar;
817                                                 } else {
818                                                         next;
819                                                 }
820                                         }
821                                         if ($r->version ne $ver || $r->flags != $flags) {
822                                                 $r->version($ver);
823                                                 $r->flags($flags);
824                                                 push @rout, $r unless $ar;
825                                         }
826                                 } else {
827                                         if ($call eq $self->{call}) {
828                                                 dbg("DXPROT: my channel route for $call has disappeared");
829                                                 next;
830                                         };
831                                         
832                                         my $new = Route->new($call);          # throw away
833                                     if ($self->in_filter_route($new)) {
834                                                 my $r = $parent->add($call, $ver, $flags);
835                                                 push @rout, $r;
836                                         } else {
837                                                 next;
838                                         }
839                                 }
840
841                                 # unbusy and stop and outgoing mail (ie if somehow we receive another PC19 without a disconnect)
842                                 my $mref = DXMsg::get_busy($call);
843                                 $mref->stop_msg($call) if $mref;
844                                 
845                                 # add this station to the user database, if required (don't remove SSID from nodes)
846                                 my $user = DXUser->get_current($call);
847                                 if (!$user) {
848                                         $user = DXUser->new($call);
849                                         $user->sort('A');
850                                         $user->priv(1);                   # I have relented and defaulted nodes
851                                         $user->lockout(1);
852                                         $user->homenode($call);
853                                         $user->node($call);
854                                 }
855                                 $user->lastin($main::systime) unless DXChannel->get($call);
856                                 $user->put;
857                         }
858
859
860                         $self->route_pc19(@rout) if @rout;
861                         return;
862                 }
863                 
864                 if ($pcno == 20) {              # send local configuration
865                         $self->send_local_config();
866                         $self->send(pc22());
867                         $self->state('normal');
868                         $self->{lastping} = 0;
869                         return;
870                 }
871                 
872                 if ($pcno == 21) {              # delete a cluster from the list
873                         my $call = uc $field[1];
874
875                         eph_del_regex("^PC1[79].*$call");
876                         
877                         # if I get a PC21 from the same callsign as self then treat it
878                         # as a PC39: I have gone away
879                         if ($call eq $self->call) {
880                                 $self->disconnect(1);
881                                 return;
882                         }
883
884                         my @rout;
885                         my $parent = Route::Node::get($self->{call});
886                         unless ($parent) {
887                                 dbg("DXPROT: my parent $self->{call} has disappeared");
888                                 $self->disconnect;
889                                 return;
890                         }
891                         if ($call ne $main::mycall) { # don't allow malicious buggers to disconnect me!
892                                 my $node = Route::Node::get($call);
893                                 if ($node) {
894
895                                         my $dxchan = DXChannel->get($call);
896                                         if ($dxchan && $dxchan != $self) {
897                                                 dbg("PCPROT: PC21 from $self->{call} trying to alter locally connected $call, ignored!") if isdbg('chanerr');
898                                                 return;
899                                         }
900
901                                         # input filter it
902                                         return unless $self->in_filter_route($node);
903
904                                         # routing objects
905                                         push @rout, $node->del($parent);
906                                 }
907                         } else {
908                                 dbg("PCPROT: I WILL _NOT_ be disconnected!") if isdbg('chanerr');
909                                 return;
910                         }
911
912 #                       if (eph_dup($line)) {
913 #                               dbg("PCPROT: dup PC21 detected") if isdbg('chanerr');
914 #                               return;
915 #                       }
916
917                         $self->route_pc21(@rout) if @rout;
918                         return;
919                 }
920                 
921                 if ($pcno == 22) {
922                         $self->state('normal');
923                         $self->{lastping} = 0;
924                         return;
925                 }
926                                 
927                 if ($pcno == 23 || $pcno == 27) { # WWV info
928                         
929                         # route 'foreign' pc27s 
930                         if ($pcno == 27) {
931                                 if ($field[8] ne $main::mycall) {
932                                         $self->route($field[8], $line);
933                                         return;
934                                 }
935                         }
936
937                         return if $rspfcheck and !$self->rspfcheck(1, $field[8], $field[7]);
938
939                         # do some de-duping
940                         my $d = cltounix($field[1], sprintf("%02d18Z", $field[2]));
941                         my $sfi = unpad($field[3]);
942                         my $k = unpad($field[4]);
943                         my $i = unpad($field[5]);
944                         my ($r) = $field[6] =~ /R=(\d+)/;
945                         $r = 0 unless $r;
946                         if (($pcno == 23 && $d < $main::systime - $pc23_max_age) || $d > $main::systime + 1500 || $field[2] < 0 || $field[2] > 23) {
947                                 dbg("PCPROT: WWV Date ($field[1] $field[2]) out of range") if isdbg('chanerr');
948                                 return;
949                         }
950                         if (Geomag::dup($d,$sfi,$k,$i,$field[6])) {
951                                 dbg("PCPROT: Dup WWV Spot ignored\n") if isdbg('chanerr');
952                                 return;
953                         }
954                         $field[7] =~ s/-\d+$//o;            # remove spotter's ssid
955                 
956                         my $wwv = Geomag::update($d, $field[2], $sfi, $k, $i, @field[6..8], $r);
957
958                         my $rep;
959                         eval {
960                                 $rep = Local::wwv($self, $field[1], $field[2], $sfi, $k, $i, @field[6..8], $r);
961                         };
962 #                       dbg("Local::wwv2 error $@") if isdbg('local') if $@;
963                         return if $rep;
964
965                         # DON'T be silly and send on PC27s!
966                         return if $pcno == 27;
967
968                         # broadcast to the eager world
969                         send_wwv_spot($self, $line, $d, $field[2], $sfi, $k, $i, @field[6..8]);
970                         return;
971                 }
972                 
973                 if ($pcno == 24) {              # set here status
974                         my $call = uc $field[1];
975                         my ($nref, $uref);
976                         $nref = Route::Node::get($call);
977                         $uref = Route::User::get($call);
978                         return unless $nref || $uref;   # if we don't know where they are, it's pointless sending it on
979                         
980                         unless (eph_dup($line)) {
981                                 $nref->here($field[2]) if $nref;
982                                 $uref->here($field[2]) if $uref;
983                                 my $ref = $nref || $uref;
984                                 return unless $self->in_filter_route($ref);
985                                 $self->route_pc24($ref, $field[3]);
986                         }
987                         return;
988                 }
989                 
990                 if ($pcno == 25) {      # merge request
991                         if ($field[1] ne $main::mycall) {
992                                 $self->route($field[1], $line);
993                                 return;
994                         }
995                         if ($field[2] eq $main::mycall) {
996                                 dbg("PCPROT: Trying to merge to myself, ignored") if isdbg('chanerr');
997                                 return;
998                         }
999
1000                         Log('DXProt', "Merge request for $field[3] spots and $field[4] WWV from $field[2]");
1001                         
1002                         # spots
1003                         if ($field[3] > 0) {
1004                                 my @in = reverse Spot::search(1, undef, undef, 0, $field[3]);
1005                                 my $in;
1006                                 foreach $in (@in) {
1007                                         $self->send(pc26(@{$in}[0..4], $field[2]));
1008                                 }
1009                         }
1010
1011                         # wwv
1012                         if ($field[4] > 0) {
1013                                 my @in = reverse Geomag::search(0, $field[4], time, 1);
1014                                 my $in;
1015                                 foreach $in (@in) {
1016                                         $self->send(pc27(@{$in}[0..5], $field[2]));
1017                                 }
1018                         }
1019                         return;
1020                 }
1021
1022                 if (($pcno >= 28 && $pcno <= 33) || $pcno == 40 || $pcno == 42 || $pcno == 49) { # mail/file handling
1023                         return if $pcno == 49 && eph_dup($line);
1024                         if ($pcno == 49 || $field[1] eq $main::mycall) {
1025                                 DXMsg::process($self, $line);
1026                         } else {
1027                                 $self->route($field[1], $line) unless $self->is_clx;
1028                         }
1029                         return;
1030                 }
1031                 
1032                 if ($pcno == 34 || $pcno == 36) { # remote commands (incoming)
1033                         if (eph_dup($line, $eph_pc34_restime)) {
1034                                 dbg("PCPROT: dupe") if isdbg('chanerr');
1035                         } else {
1036                                 $self->process_rcmd($field[1], $field[2], $field[2], $field[3]);
1037                         }
1038                         return;
1039                 }
1040                 
1041                 if ($pcno == 35) {              # remote command replies
1042                         eph_del_regex("^PC35\\^$field[2]\\^$field[1]\\^");
1043                         $self->process_rcmd_reply($field[1], $field[2], $field[1], $field[3]);
1044                         return;
1045                 }
1046                 
1047                 # for pc 37 see 44 onwards
1048
1049                 if ($pcno == 38) {              # node connected list from neighbour
1050                         return;
1051                 }
1052                 
1053                 if ($pcno == 39) {              # incoming disconnect
1054                         if ($field[1] eq $self->{call}) {
1055                                 $self->disconnect(1);
1056                         } else {
1057                                 dbg("PCPROT: came in on wrong channel") if isdbg('chanerr');
1058                         }
1059                         return;
1060                 }
1061                 
1062                 if ($pcno == 41) {              # user info
1063                         my $call = $field[1];
1064
1065                         if (eph_dup($line, $eph_info_restime)) {
1066                                 dbg("PCPROT: dupe") if isdbg('chanerr');
1067                                 return;
1068                         }
1069                         
1070                         # input filter if required
1071 #                       my $ref = Route::get($call) || Route->new($call);
1072 #                       return unless $self->in_filter_route($ref);
1073
1074                         if ($field[3] eq $field[2] || $field[3] =~ /^\s*$/) {
1075                                 dbg('PCPROT: invalid value') if isdbg('chanerr');
1076                                 return;
1077                         }
1078
1079                         # add this station to the user database, if required
1080                         my $user = DXUser->get_current($call);
1081                         $user = DXUser->new($call) unless $user;
1082                         
1083                         if ($field[2] == 1) {
1084                                 $user->name($field[3]);
1085                         } elsif ($field[2] == 2) {
1086                                 $user->qth($field[3]);
1087                         } elsif ($field[2] == 3) {
1088                                 if (is_latlong($field[3])) {
1089                                         my ($lat, $long) = DXBearing::stoll($field[3]);
1090                                         $user->lat($lat);
1091                                         $user->long($long);
1092                                         $user->qra(DXBearing::lltoqra($lat, $long));
1093                                 } else {
1094                                         dbg('PCPROT: not a valid lat/long') if isdbg('chanerr');
1095                                         return;
1096                                 }
1097                         } elsif ($field[2] == 4) {
1098                                 $user->homenode($field[3]);
1099                         } elsif ($field[2] == 5) {
1100                                 if (is_qra(uc $field[3])) {
1101                                         my ($lat, $long) = DXBearing::qratoll(uc $field[3]);
1102                                         $user->lat($lat);
1103                                         $user->long($long);
1104                                         $user->qra(uc $field[3]);
1105                                 } else {
1106                                         dbg('PCPROT: not a valid QRA locator') if isdbg('chanerr');
1107                                         return;
1108                                 }
1109                         }
1110                         $user->lastoper($main::systime);   # to cut down on excessive for/opers being generated
1111                         $user->put;
1112
1113                         unless ($self->{isolate}) {
1114                                 DXChannel::broadcast_nodes($line, $self); # send it to everyone but me
1115                         }
1116
1117 #  perhaps this IS what we want after all
1118 #                       $self->route_pc41($ref, $call, $field[2], $field[3], $field[4]);
1119                         return;
1120                 }
1121
1122                 if ($pcno == 43) {
1123                         last SWITCH;
1124                 }
1125
1126                 if ($pcno == 37 || $pcno == 44 || $pcno == 45 || $pcno == 46 || $pcno == 47 || $pcno == 48) {
1127                         DXDb::process($self, $line);
1128                         return;
1129                 }
1130                 
1131                 if ($pcno == 50) {              # keep alive/user list
1132                         my $call = $field[1];
1133                         my $node = Route::Node::get($call);
1134                         if ($node) {
1135                                 return unless $node->call eq $self->{call};
1136                                 $node->usercount($field[2]);
1137
1138                                 # input filter if required
1139                                 return unless $self->in_filter_route($node);
1140
1141                                 $self->route_pc50($node, $field[2], $field[3]) unless eph_dup($line);
1142                         }
1143                         return;
1144                 }
1145                 
1146                 if ($pcno == 51) {              # incoming ping requests/answers
1147                         my $to = $field[1];
1148                         my $from = $field[2];
1149                         my $flag = $field[3];
1150
1151                         
1152                         # is it for us?
1153                         if ($to eq $main::mycall) {
1154                                 if ($flag == 1) {
1155                                         $self->send(pc51($from, $to, '0'));
1156                                 } else {
1157                                         # it's a reply, look in the ping list for this one
1158                                         my $ref = $pings{$from};
1159                                         if ($ref) {
1160                                                 my $tochan =  DXChannel->get($from);
1161                                                 while (@$ref) {
1162                                                         my $r = shift @$ref;
1163                                                         my $dxchan = DXChannel->get($r->{call});
1164                                                         next unless $dxchan;
1165                                                         my $t = tv_interval($r->{t}, [ gettimeofday ]);
1166                                                         if ($dxchan->is_user) {
1167                                                                 my $s = sprintf "%.2f", $t; 
1168                                                                 my $ave = sprintf "%.2f", $tochan ? ($tochan->{pingave} || $t) : $t;
1169                                                                 $dxchan->send($dxchan->msg('pingi', $from, $s, $ave))
1170                                                         } elsif ($dxchan->is_node) {
1171                                                                 if ($tochan) {
1172                                                                         my $nopings = $tochan->user->nopings || 2;
1173                                                                         push @{$tochan->{pingtime}}, $t;
1174                                                                         shift @{$tochan->{pingtime}} if @{$tochan->{pingtime}} > 6;
1175
1176                                                                         # cope with a missed ping, this means you must set the pingint large enough
1177                                                                         if ($t > $tochan->{pingint}  && $t < 2 * $tochan->{pingint} ) {
1178                                                                                 $t -= $tochan->{pingint};
1179                                                                         }
1180
1181                                                                         # calc smoothed RTT a la TCP
1182                                                                         if (@{$tochan->{pingtime}} == 1) {
1183                                                                                 $tochan->{pingave} = $t;
1184                                                                         } else {
1185                                                                                 $tochan->{pingave} = $tochan->{pingave} + (($t - $tochan->{pingave}) / 6);
1186                                                                         }
1187                                                                         $tochan->{nopings} = $nopings; # pump up the timer
1188                                                                 }
1189                                                         } 
1190                                                 }
1191                                         }
1192                                 }
1193                         } else {
1194                                 if (eph_dup($line)) {
1195                                         dbg("PCPROT: dup PC51 detected") if isdbg('chanerr');
1196                                         return;
1197                                 }
1198                                 # route down an appropriate thingy
1199                                 $self->route($to, $line);
1200                         }
1201                         return;
1202                 }
1203
1204                 if ($pcno == 75) {              # dunno but route it
1205                         my $call = $field[1];
1206                         if ($call ne $main::mycall) {
1207                                 $self->route($call, $line);
1208                         }
1209                         return;
1210                 }
1211
1212                 if ($pcno == 73) {  # WCY broadcasts
1213                         my $call = $field[1];
1214                         
1215                         # do some de-duping
1216                         my $d = cltounix($call, sprintf("%02d18Z", $field[2]));
1217                         if (($pcno == 23 && $d < $main::systime - $pc23_max_age) || $d > $main::systime + 1500 || $field[2] < 0 || $field[2] > 23) {
1218                                 dbg("PCPROT: WCY Date ($call $field[2]) out of range") if isdbg('chanerr');
1219                                 return;
1220                         }
1221                         @field = map { unpad($_) } @field;
1222                         if (WCY::dup($d)) {
1223                                 dbg("PCPROT: Dup WCY Spot ignored\n") if isdbg('chanerr');
1224                                 return;
1225                         }
1226                 
1227                         my $wcy = WCY::update($d, @field[2..12]);
1228
1229                         my $rep;
1230                         eval {
1231                                 $rep = Local::wcy($self, @field[1..12]);
1232                         };
1233                         # dbg("Local::wcy error $@") if isdbg('local') if $@;
1234                         return if $rep;
1235
1236                         # broadcast to the eager world
1237                         send_wcy_spot($self, $line, $d, @field[2..12]);
1238                         return;
1239                 }
1240
1241                 if ($pcno == 84) { # remote commands (incoming)
1242                         $self->process_rcmd($field[1], $field[2], $field[3], $field[4]);
1243                         return;
1244                 }
1245
1246                 if ($pcno == 85) {              # remote command replies
1247                         $self->process_rcmd_reply($field[1], $field[2], $field[3], $field[4]);
1248                         
1249                         return;
1250                 }
1251                 if ($pcno == 90) {              # new style PC16,17,19,21
1252                         return;
1253                 }
1254         }
1255          
1256         # if get here then rebroadcast the thing with its Hop count decremented (if
1257         # there is one). If it has a hop count and it decrements to zero then don't
1258         # rebroadcast it.
1259         #
1260         # NOTE - don't arrive here UNLESS YOU WANT this lump of protocol to be
1261         #        REBROADCAST!!!!
1262         #
1263
1264         if (eph_dup($line)) {
1265                 dbg("PCPROT: Ephemeral dup, dropped") if isdbg('chanerr');
1266         } else {
1267                 unless ($self->{isolate}) {
1268                         DXChannel::broadcast_nodes($line, $self); # send it to everyone but me
1269                 }
1270         }
1271 }
1272
1273 #
1274 # This is called from inside the main cluster processing loop and is used
1275 # for despatching commands that are doing some long processing job
1276 #
1277 sub process
1278 {
1279         my $t = time;
1280         my @dxchan = DXChannel->get_all();
1281         my $dxchan;
1282         my $pc50s;
1283         
1284         # send out a pc50 on EVERY channel all at once
1285         if ($t >= $last_pc50 + $DXProt::pc50_interval) {
1286                 $pc50s = pc50($main::me, scalar DXChannel::get_all_users);
1287                 eph_dup($pc50s);
1288                 $last_pc50 = $t;
1289         }
1290
1291         foreach $dxchan (@dxchan) {
1292                 next unless $dxchan->is_node();
1293                 next if $dxchan == $main::me;
1294
1295                 # send the pc50 or PC90
1296                 $dxchan->send($pc50s) if $pc50s;
1297                 
1298                 # send a ping out on this channel
1299                 if ($dxchan->{pingint} && $t >= $dxchan->{pingint} + $dxchan->{lastping}) {
1300                         if ($dxchan->{nopings} <= 0) {
1301                                 $dxchan->disconnect;
1302                         } else {
1303                                 addping($main::mycall, $dxchan->call);
1304                                 $dxchan->{nopings} -= 1;
1305                                 $dxchan->{lastping} = $t;
1306                         }
1307                 }
1308         }
1309
1310         # every ten seconds
1311         if ($t - $last10 >= 10) {       
1312                 # clean out ephemera 
1313
1314                 eph_clean();
1315
1316                 $last10 = $t;
1317         }
1318         
1319         if ($main::systime - 3600 > $last_hour) {
1320                 $last_hour = $main::systime;
1321         }
1322 }
1323
1324 #
1325 # finish up a pc context
1326 #
1327
1328 #
1329 # some active measures
1330 #
1331
1332
1333 sub send_dx_spot
1334 {
1335         my $self = shift;
1336         my $line = shift;
1337         my @dxchan = DXChannel->get_all();
1338         my $dxchan;
1339         
1340         # send it if it isn't the except list and isn't isolated and still has a hop count
1341         # taking into account filtering and so on
1342         foreach $dxchan (@dxchan) {
1343                 next if $dxchan == $main::me;
1344                 next if $dxchan == $self && $self->is_node;
1345                 $dxchan->dx_spot($line, $self->{isolate}, @_, $self->{call});
1346         }
1347 }
1348
1349 sub dx_spot
1350 {
1351         my $self = shift;
1352         my $line = shift;
1353         my $isolate = shift;
1354         my ($filter, $hops);
1355
1356         if ($self->{spotsfilter}) {
1357                 ($filter, $hops) = $self->{spotsfilter}->it(@_);
1358                 return unless $filter;
1359         }
1360         send_prot_line($self, $filter, $hops, $isolate, $line);
1361 }
1362
1363 sub send_prot_line
1364 {
1365         my ($self, $filter, $hops, $isolate, $line) = @_;
1366         my $routeit;
1367         
1368         if ($hops) {
1369                 $routeit = $line;
1370                 $routeit =~ s/\^H\d+\^\~$/\^H$hops\^\~/;
1371         } else {
1372                 $routeit = adjust_hops($self, $line);  # adjust its hop count by node name
1373                 return unless $routeit;
1374         }
1375         if ($filter) {
1376                 $self->send($routeit);
1377         } else {
1378                 $self->send($routeit) unless $self->{isolate} || $isolate;
1379         }
1380 }
1381
1382
1383 sub send_wwv_spot
1384 {
1385         my $self = shift;
1386         my $line = shift;
1387         my @dxchan = DXChannel->get_all();
1388         my $dxchan;
1389         my ($wwv_dxcc, $wwv_itu, $wwv_cq, $org_dxcc, $org_itu, $org_cq) = (0..0);
1390         my @dxcc = Prefix::extract($_[6]);
1391         if (@dxcc > 0) {
1392                 $wwv_dxcc = $dxcc[1]->dxcc;
1393                 $wwv_itu = $dxcc[1]->itu;
1394                 $wwv_cq = $dxcc[1]->cq;                                         
1395         }
1396         @dxcc = Prefix::extract($_[7]);
1397         if (@dxcc > 0) {
1398                 $org_dxcc = $dxcc[1]->dxcc;
1399                 $org_itu = $dxcc[1]->itu;
1400                 $org_cq = $dxcc[1]->cq;                                         
1401         }
1402         
1403         # send it if it isn't the except list and isn't isolated and still has a hop count
1404         # taking into account filtering and so on
1405         foreach $dxchan (@dxchan) {
1406                 next if $dxchan == $main::me;
1407                 next if $dxchan == $self && $self->is_node;
1408                 my $routeit;
1409                 my ($filter, $hops);
1410
1411                 $dxchan->wwv($line, $self->{isolate}, @_, $self->{call}, $wwv_dxcc, $wwv_itu, $wwv_cq, $org_dxcc, $org_itu, $org_cq);
1412         }
1413         
1414 }
1415
1416 sub wwv
1417 {
1418         my $self = shift;
1419         my $line = shift;
1420         my $isolate = shift;
1421         my ($filter, $hops);
1422         
1423         if ($self->{wwvfilter}) {
1424                 ($filter, $hops) = $self->{wwvfilter}->it(@_);
1425                 return unless $filter;
1426         }
1427         send_prot_line($self, $filter, $hops, $isolate, $line)
1428 }
1429
1430 sub send_wcy_spot
1431 {
1432         my $self = shift;
1433         my $line = shift;
1434         my @dxchan = DXChannel->get_all();
1435         my $dxchan;
1436         my ($wcy_dxcc, $wcy_itu, $wcy_cq, $org_dxcc, $org_itu, $org_cq) = (0..0);
1437         my @dxcc = Prefix::extract($_[10]);
1438         if (@dxcc > 0) {
1439                 $wcy_dxcc = $dxcc[1]->dxcc;
1440                 $wcy_itu = $dxcc[1]->itu;
1441                 $wcy_cq = $dxcc[1]->cq;                                         
1442         }
1443         @dxcc = Prefix::extract($_[11]);
1444         if (@dxcc > 0) {
1445                 $org_dxcc = $dxcc[1]->dxcc;
1446                 $org_itu = $dxcc[1]->itu;
1447                 $org_cq = $dxcc[1]->cq;                                         
1448         }
1449         
1450         # send it if it isn't the except list and isn't isolated and still has a hop count
1451         # taking into account filtering and so on
1452         foreach $dxchan (@dxchan) {
1453                 next if $dxchan == $main::me;
1454                 next if $dxchan == $self;
1455
1456                 $dxchan->wcy($line, $self->{isolate}, @_, $self->{call}, $wcy_dxcc, $wcy_itu, $wcy_cq, $org_dxcc, $org_itu, $org_cq);
1457         }
1458 }
1459
1460 sub wcy
1461 {
1462         my $self = shift;
1463         my $line = shift;
1464         my $isolate = shift;
1465         my ($filter, $hops);
1466
1467         if ($self->{wcyfilter}) {
1468                 ($filter, $hops) = $self->{wcyfilter}->it(@_);
1469                 return unless $filter;
1470         }
1471         send_prot_line($self, $filter, $hops, $isolate, $line) if $self->is_clx || $self->is_spider || $self->is_dxnet;
1472 }
1473
1474 # send an announce
1475 sub send_announce
1476 {
1477         my $self = shift;
1478         my $line = shift;
1479         my @dxchan = DXChannel->get_all();
1480         my $dxchan;
1481         my $target;
1482         my $to = 'To ';
1483         my $text = unpad($_[2]);
1484                                 
1485         if ($_[3] eq '*') {     # sysops
1486                 $target = "SYSOP";
1487         } elsif ($_[3] gt ' ') { # speciality list handling
1488                 my ($name) = split /\./, $_[3]; 
1489                 $target = "$name"; # put the rest in later (if bothered) 
1490         } 
1491         
1492         if ($_[5] eq '1') {
1493                 $target = "WX"; 
1494                 $to = '';
1495         }
1496         $target = "ALL" if !$target;
1497
1498
1499         # obtain country codes etc 
1500         my ($ann_dxcc, $ann_itu, $ann_cq, $org_dxcc, $org_itu, $org_cq) = (0..0);
1501         my ($ann_state, $org_state) = ("", "");
1502         my @dxcc = Prefix::extract($_[0]);
1503         if (@dxcc > 0) {
1504                 $ann_dxcc = $dxcc[1]->dxcc;
1505                 $ann_itu = $dxcc[1]->itu;
1506                 $ann_cq = $dxcc[1]->cq;                                         
1507                 $ann_state = $dxcc[1]->state;
1508         }
1509         @dxcc = Prefix::extract($_[4]);
1510         if (@dxcc > 0) {
1511                 $org_dxcc = $dxcc[1]->dxcc;
1512                 $org_itu = $dxcc[1]->itu;
1513                 $org_cq = $dxcc[1]->cq;                                         
1514                 $org_state = $dxcc[1]->state;
1515         }
1516
1517         if ($self->{inannfilter}) {
1518                 my ($filter, $hops) = 
1519                         $self->{inannfilter}->it(@_, $self->{call}, 
1520                                                                          $ann_dxcc, $ann_itu, $ann_cq,
1521                                                                          $org_dxcc, $org_itu, $org_cq, $ann_state, $org_state);
1522                 unless ($filter) {
1523                         dbg("PCPROT: Rejected by input announce filter") if isdbg('chanerr');
1524                         return;
1525                 }
1526         }
1527
1528         if (AnnTalk::dup($_[0], $_[1], $_[2])) {
1529                 dbg("PCPROT: Duplicate Announce ignored") if isdbg('chanerr');
1530                 return;
1531         }
1532
1533         Log('ann', $target, $_[0], $text);
1534
1535         # send it if it isn't the except list and isn't isolated and still has a hop count
1536         # taking into account filtering and so on
1537         foreach $dxchan (@dxchan) {
1538                 next if $dxchan == $main::me;
1539                 next if $dxchan == $self && $self->is_node;
1540                 $dxchan->announce($line, $self->{isolate}, $to, $target, $text, @_, $self->{call}, $ann_dxcc, $ann_itu, $ann_cq, $org_dxcc, $org_itu, $org_cq);
1541         }
1542 }
1543
1544 sub announce
1545 {
1546         my $self = shift;
1547         my $line = shift;
1548         my $isolate = shift;
1549         my $to = shift;
1550         my $target = shift;
1551         my $text = shift;
1552         my ($filter, $hops);
1553
1554         if ($self->{annfilter}) {
1555                 ($filter, $hops) = $self->{annfilter}->it(@_);
1556                 return unless $filter;
1557         }
1558         send_prot_line($self, $filter, $hops, $isolate, $line) unless $_[1] eq $main::mycall;
1559 }
1560
1561
1562 sub send_local_config
1563 {
1564         my $self = shift;
1565         my $n;
1566         my @nodes;
1567         my @localnodes;
1568         my @remotenodes;
1569
1570         dbg('DXProt::send_local_config') if isdbg('trace');
1571         
1572         # send our nodes
1573         if ($self->{isolate}) {
1574                 @localnodes = ( $main::routeroot );
1575         } else {
1576                 # create a list of all the nodes that are not connected to this connection
1577                 # and are not themselves isolated, this to make sure that isolated nodes
1578         # don't appear outside of this node
1579                 my @dxchan = grep { $_->call ne $main::mycall && $_ != $self && !$_->{isolate} } DXChannel::get_all_nodes();
1580                 @localnodes = map { my $r = Route::Node::get($_->{call}); $r ? $r : () } @dxchan if @dxchan;
1581                 my @intcalls = map { $_->nodes } @localnodes if @localnodes;
1582                 my $ref = Route::Node::get($self->{call});
1583                 my @rnodes = $ref->nodes;
1584                 for my $n (@intcalls) {
1585                         push @remotenodes, Route::Node::get($n) unless grep $n eq $_, @rnodes;
1586                 }
1587                 unshift @localnodes, $main::routeroot;
1588         }
1589         
1590
1591         send_route($self, \&pc19, scalar(@localnodes)+scalar(@remotenodes), @localnodes, @remotenodes);
1592         
1593         # get all the users connected on the above nodes and send them out
1594         foreach $n (@localnodes, @remotenodes) {
1595                 if ($n) {
1596                         send_route($self, \&pc16, 1, $n, map {my $r = Route::User::get($_); $r ? ($r) : ()} $n->users);
1597                 } else {
1598                         dbg("sent a null value") if isdbg('chanerr');
1599                 }
1600         }
1601 }
1602
1603 #
1604 # route a message down an appropriate interface for a callsign
1605 #
1606 # is called route(to, pcline);
1607 #
1608 sub route
1609 {
1610         my ($self, $call, $line) = @_;
1611
1612         if (ref $self && $call eq $self->{call}) {
1613                 dbg("PCPROT: Trying to route back to source, dropped") if isdbg('chanerr');
1614                 return;
1615         }
1616
1617         # always send it down the local interface if available
1618         my $dxchan = DXChannel->get($call);
1619         unless ($dxchan) {
1620                 my $cl = Route::get($call);
1621                 $dxchan = $cl->dxchan if $cl;
1622                 if (ref $dxchan) {
1623                         if (ref $self && $dxchan eq $self) {
1624                                 dbg("PCPROT: Trying to route back to source, dropped") if isdbg('chanerr');
1625                                 return;
1626                         }
1627                 }
1628         }
1629         if ($dxchan) {
1630                 my $routeit = adjust_hops($dxchan, $line);   # adjust its hop count by node name
1631                 if ($routeit) {
1632                         $dxchan->send($routeit) unless $dxchan == $main::me;
1633                 }
1634         } else {
1635                 dbg("PCPROT: No route available, dropped") if isdbg('chanerr');
1636         }
1637 }
1638
1639 #
1640 # obtain the hops from the list for this callsign and pc no 
1641 #
1642
1643 sub get_hops
1644 {
1645         my $pcno = shift;
1646         my $hops = $DXProt::hopcount{$pcno};
1647         $hops = $DXProt::def_hopcount if !$hops;
1648         return "H$hops";       
1649 }
1650
1651
1652 # adjust the hop count on a per node basis using the user loadable 
1653 # hop table if available or else decrement an existing one
1654 #
1655
1656 sub adjust_hops
1657 {
1658         my $self = shift;
1659         my $s = shift;
1660         my $call = $self->{call};
1661         my $hops;
1662         
1663         if (($hops) = $s =~ /\^H(\d+)\^~?$/o) {
1664                 my ($pcno) = $s =~ /^PC(\d\d)/o;
1665                 confess "$call called adjust_hops with '$s'" unless $pcno;
1666                 my $ref = $nodehops{$call} if %nodehops;
1667                 if ($ref) {
1668                         my $newhops = $ref->{$pcno};
1669                         return "" if defined $newhops && $newhops == 0;
1670                         $newhops = $ref->{default} unless $newhops;
1671                         return "" if defined $newhops && $newhops == 0;
1672                         $newhops = $hops if !$newhops;
1673                         $s =~ s/\^H(\d+)(\^~?)$/\^H$newhops$2/ if $newhops;
1674                 } else {
1675                         # simply decrement it
1676                         $hops--;
1677                         return "" if !$hops;
1678                         $s =~ s/\^H(\d+)(\^~?)$/\^H$hops$2/ if $hops;
1679                 }
1680         }
1681         return $s;
1682 }
1683
1684
1685 # load hop tables
1686 #
1687 sub load_hops
1688 {
1689         my $self = shift;
1690         return $self->msg('lh1') unless -e "$main::data/hop_table.pl";
1691         do "$main::data/hop_table.pl";
1692         return $@ if $@;
1693         return 0;
1694 }
1695
1696
1697 # add a ping request to the ping queues
1698 sub addping
1699 {
1700         my ($from, $to) = @_;
1701         my $ref = $pings{$to} || [];
1702         my $r = {};
1703         $r->{call} = $from;
1704         $r->{t} = [ gettimeofday ];
1705         route(undef, $to, pc51($to, $main::mycall, 1));
1706         push @$ref, $r;
1707         $pings{$to} = $ref;
1708 }
1709
1710 sub process_rcmd
1711 {
1712         my ($self, $tonode, $fromnode, $user, $cmd) = @_;
1713         if ($tonode eq $main::mycall) {
1714                 my $ref = DXUser->get_current($fromnode);
1715                 my $cref = Route::Node::get($fromnode);
1716                 Log('rcmd', 'in', $ref->{priv}, $fromnode, $cmd);
1717                 if ($cmd !~ /^\s*rcmd/i && $cref && $ref && $cref->call eq $ref->homenode) { # not allowed to relay RCMDS!
1718                         if ($ref->{priv}) {             # you have to have SOME privilege, the commands have further filtering
1719                                 $self->{remotecmd} = 1; # for the benefit of any command that needs to know
1720                                 my $oldpriv = $self->{priv};
1721                                 $self->{priv} = $ref->{priv}; # assume the user's privilege level
1722                                 my @in = (DXCommandmode::run_cmd($self, $cmd));
1723                                 $self->{priv} = $oldpriv;
1724                                 $self->send_rcmd_reply($main::mycall, $fromnode, $user, @in);
1725                                 delete $self->{remotecmd};
1726                         } else {
1727                                 $self->send_rcmd_reply($main::mycall, $fromnode, $user, "sorry...!");
1728                         }
1729                 } else {
1730                         $self->send_rcmd_reply($main::mycall, $fromnode, $user, "your attempt is logged, Tut tut tut...!");
1731                 }
1732         } else {
1733                 my $ref = DXUser->get_current($tonode);
1734                 if ($ref && $ref->is_clx) {
1735                         $self->route($tonode, pc84($fromnode, $tonode, $user, $cmd));
1736                 } else {
1737                         $self->route($tonode, pc34($fromnode, $tonode, $cmd));
1738                 }
1739         }
1740 }
1741
1742 sub process_rcmd_reply
1743 {
1744         my ($self, $tonode, $fromnode, $user, $line) = @_;
1745         if ($tonode eq $main::mycall) {
1746                 my $s = $rcmds{$fromnode};
1747                 if ($s) {
1748                         my $dxchan = DXChannel->get($s->{call});
1749                         my $ref = $user eq $tonode ? $dxchan : (DXChannel->get($user) || $dxchan);
1750                         $ref->send($line) if $ref;
1751                         delete $rcmds{$fromnode} if !$dxchan;
1752                 } else {
1753                         # send unsolicited ones to the sysop
1754                         my $dxchan = DXChannel->get($main::myalias);
1755                         $dxchan->send($line) if $dxchan;
1756                 }
1757         } else {
1758                 my $ref = DXUser->get_current($tonode);
1759                 if ($ref && $ref->is_clx) {
1760                         $self->route($tonode, pc85($fromnode, $tonode, $user, $line));
1761                 } else {
1762                         $self->route($tonode, pc35($fromnode, $tonode, $line));
1763                 }
1764         }
1765 }
1766
1767 sub send_rcmd_reply
1768 {
1769         my $self = shift;
1770         my $tonode = shift;
1771         my $fromnode = shift;
1772         my $user = shift;
1773         while (@_) {
1774                 my $line = shift;
1775                 $line =~ s/\s*$//;
1776                 Log('rcmd', 'out', $fromnode, $line);
1777                 if ($self->is_clx) {
1778                         $self->send(pc85($main::mycall, $fromnode, $user, "$main::mycall:$line"));
1779                 } else {
1780                         $self->send(pc35($main::mycall, $fromnode, "$main::mycall:$line"));
1781                 }
1782         }
1783 }
1784
1785 # add a rcmd request to the rcmd queues
1786 sub addrcmd
1787 {
1788         my ($self, $to, $cmd) = @_;
1789
1790         my $r = {};
1791         $r->{call} = $self->{call};
1792         $r->{t} = $main::systime;
1793         $r->{cmd} = $cmd;
1794         $rcmds{$to} = $r;
1795         
1796         my $ref = Route::Node::get($to);
1797         my $dxchan = $ref->dxchan;
1798         if ($dxchan && $dxchan->is_clx) {
1799                 route(undef, $to, pc84($main::mycall, $to, $self->{call}, $cmd));
1800         } else {
1801                 route(undef, $to, pc34($main::mycall, $to, $cmd));
1802         }
1803 }
1804
1805 sub disconnect
1806 {
1807         my $self = shift;
1808         my $pc39flag = shift;
1809         my $call = $self->call;
1810
1811         return if $self->{disconnecting}++;
1812         
1813         unless ($pc39flag && $pc39flag == 1) {
1814                 $self->send_now("D", DXProt::pc39($main::mycall, $self->msg('disc1', "System Op")));
1815         }
1816
1817         # get rid of any PC16 and 19s
1818         eph_del_regex("^PC16\\^$call");
1819         eph_del_regex("^PC19\\^.*$call");
1820
1821         # do routing stuff
1822         my $node = Route::Node::get($call);
1823         my @rout;
1824         if ($node) {
1825                 @rout = $node->del($main::routeroot);
1826         }
1827         
1828         # unbusy and stop and outgoing mail
1829         my $mref = DXMsg::get_busy($call);
1830         $mref->stop_msg($call) if $mref;
1831         
1832         # broadcast to all other nodes that all the nodes connected to via me are gone
1833         unless ($pc39flag && $pc39flag == 2) {
1834                 $self->route_pc21(@rout) if @rout;
1835         }
1836
1837         # remove outstanding pings
1838         delete $pings{$call};
1839         
1840         # I was the last node visited
1841     $self->user->node($main::mycall);
1842
1843         # send info to all logged in thingies
1844         $self->tell_login('logoutn');
1845
1846         Log('DXProt', $call . " Disconnected");
1847
1848         $self->SUPER::disconnect;
1849 }
1850
1851
1852
1853 # send a talk message to this thingy
1854 #
1855 sub talk
1856 {
1857         my ($self, $from, $to, $via, $line, $origin) = @_;
1858         
1859         $line =~ s/\^/\\5E/g;                   # remove any ^ characters
1860         $self->send(DXProt::pc10($from, $to, $via, $line, $origin));
1861         Log('talk', $to, $from, $via?$via:$self->call, $line) unless $origin && $origin ne $main::mycall;
1862 }
1863
1864 # send it if it isn't the except list and isn't isolated and still has a hop count
1865 # taking into account filtering and so on
1866 sub send_route
1867 {
1868         my $self = shift;
1869         my $generate = shift;
1870         my $no = shift;     # the no of things to filter on 
1871         my $routeit;
1872         my ($filter, $hops);
1873         my @rin;
1874         
1875         for (; @_ && $no; $no--) {
1876                 my $r = shift;
1877                 
1878                 if (!$self->{isolate} && $self->{routefilter}) {
1879                         $filter = undef;
1880                         if ($r) {
1881                                 ($filter, $hops) = $self->{routefilter}->it($self->{call}, $self->{dxcc}, $self->{itu}, $self->{cq}, $r->call, $r->dxcc, $r->itu, $r->cq, $self->{state}, $r->{state});
1882                                 if ($filter) {
1883                                         push @rin, $r;
1884                                 } else {
1885                                         dbg("DXPROT: $self->{call}/" . $r->call . " rejected by output filter") if isdbg('chanerr');
1886                                 }
1887                         } else {
1888                                 dbg("was sent a null value") if isdbg('chanerr');
1889                         }
1890                 } else {
1891                         push @rin, $r unless $self->{isolate} && $r->call ne $main::mycall;
1892                 }
1893         }
1894         if (@rin) {
1895                 foreach my $line (&$generate(@rin, @_)) {
1896                         if ($hops) {
1897                                 $routeit = $line;
1898                                 $routeit =~ s/\^H\d+\^\~$/\^H$hops\^\~/;
1899                         } else {
1900                                 $routeit = adjust_hops($self, $line);  # adjust its hop count by node name
1901                                 next unless $routeit;
1902                         }
1903                         $self->send($routeit);
1904                 }
1905         }
1906 }
1907
1908 sub broadcast_route
1909 {
1910         my $self = shift;
1911         my $generate = shift;
1912         my @dxchan = DXChannel::get_all_nodes();
1913         my $dxchan;
1914         my $line;
1915         
1916         unless ($self->{isolate}) {
1917                 foreach $dxchan (@dxchan) {
1918                         next if $dxchan == $self;
1919                         next if $dxchan == $main::me;
1920                         next if $dxchan->user->wantnp;
1921                         
1922                         $dxchan->send_route($generate, @_);
1923                 }
1924         }
1925 }
1926
1927 sub route_pc16
1928 {
1929         my $self = shift;
1930         broadcast_route($self, \&pc16, 1, @_);
1931 }
1932
1933 sub route_pc17
1934 {
1935         my $self = shift;
1936         broadcast_route($self, \&pc17, 1, @_);
1937 }
1938
1939 sub route_pc19
1940 {
1941         my $self = shift;
1942         broadcast_route($self, \&pc19, scalar @_, @_);
1943 }
1944
1945 sub route_pc21
1946 {
1947         my $self = shift;
1948         broadcast_route($self, \&pc21, scalar @_, @_);
1949 }
1950
1951 sub route_pc24
1952 {
1953         my $self = shift;
1954         broadcast_route($self, \&pc24, 1, @_);
1955 }
1956
1957 sub route_pc41
1958 {
1959         my $self = shift;
1960         broadcast_route($self, \&pc41, 1, @_);
1961 }
1962
1963 sub route_pc50
1964 {
1965         my $self = shift;
1966         broadcast_route($self, \&pc50, 1, @_);
1967 }
1968
1969 sub route_pc90
1970 {
1971         my $self = shift;
1972         broadcast_route($self, \&pc90, 1, @_);
1973 }
1974
1975 sub in_filter_route
1976 {
1977         my $self = shift;
1978         my $r = shift;
1979         my ($filter, $hops) = (1, 1);
1980         
1981         if ($self->{inroutefilter}) {
1982                 ($filter, $hops) = $self->{inroutefilter}->it($self->{call}, $self->{dxcc}, $self->{itu}, $self->{cq}, $r->call, $r->dxcc, $r->itu, $r->cq, $self->state, $r->state);
1983                 dbg("PCPROT: $self->{call}/" . $r->call . ' rejected by in_filter_route') if !$filter && isdbg('chanerr');
1984         }
1985         return $filter;
1986 }
1987
1988 sub eph_dup
1989 {
1990         my $s = shift;
1991         my $t = shift || $eph_restime;
1992         my $r;
1993
1994         # chop the end off
1995         $s =~ s/\^H\d\d?\^?\~?$//;
1996         $r = 1 if exists $eph{$s};    # pump up the dup if it keeps circulating
1997         $eph{$s} = $main::systime + $t;
1998         return $r;
1999 }
2000
2001 sub eph_del_regex
2002 {
2003         my $regex = shift;
2004         my ($key, $val);
2005         while (($key, $val) = each %eph) {
2006                 if ($key =~ m{$regex}) {
2007                         delete $eph{$key};
2008                 }
2009         }
2010 }
2011
2012 sub eph_clean
2013 {
2014         my ($key, $val);
2015         
2016         while (($key, $val) = each %eph) {
2017                 if ($main::systime >= $val) {
2018                         delete $eph{$key};
2019                 }
2020         }
2021 }
2022
2023 sub eph_list
2024 {
2025         my ($key, $val);
2026         my @out;
2027
2028         while (($key, $val) = each %eph) {
2029                 push @out, $key, $val;
2030         }
2031         return @out;
2032 }
2033
2034 sub run_cmd
2035 {
2036         goto &DXCommandmode::run_cmd;
2037 }
2038 1;
2039 __END__