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