perl/DXProt.pm

   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                         $pingint $obscount %pc19list
  48                         %nodehops $baddx $badspotter $badnode $censorpc $rspfcheck
  49                         $allowzero $decode_dk0wcy $send_opernam @checklist);
  50
  51 $pc11_max_age = 1*3600;                 # the maximum age for an incoming 'real-time' pc11
  52 $pc23_max_age = 1*3600;                 # the maximum age for an incoming 'real-time' pc23
  53
  54 $last_hour = time;                              # last time I did an hourly periodic update
  55 %pings = ();                    # outstanding ping requests outbound
  56 %rcmds = ();                    # outstanding rcmd requests outbound
  57 %nodehops = ();                 # node specific hop control
  58 %pc19list = ();                                 # list of outstanding PC19s that haven't had PC16s on them
  59
  60 $censorpc = 1;                                  # Do a BadWords::check on text fields and reject things
  61                                                                 # loads of 'bad things'
  62 $baddx = new DXHash "baddx";
  63 $badspotter = new DXHash "badspotter";
  64 $badnode = new DXHash "badnode";
  65 $last10 = $last_pc50 = time;
  66 $ann_to_talk = 1;
  67 $rspfcheck = 1;
  68 $eph_restime = 180;
  69 $eph_info_restime = 60*60;
  70 $eph_pc34_restime = 30;
  71 $pingint = 5*60;
  72 $obscount = 2;
  73
  74 @checklist =
  75 (
  76  [ qw(c c m bp bc c) ],                 # pc10
  77  [ qw(f m d t m c c h) ],               # pc11
  78  [ qw(c bc m bp bm p h) ],              # pc12
  79  [ qw(c h) ],                                   #
  80  [ qw(c h) ],                                   #
  81  [ qw(c m h) ],                                 #
  82  undef ,                                                # pc16 has to be validated manually
  83  [ qw(c c h) ],                                 # pc17
  84  [ qw(m n) ],                                   # pc18
  85  undef ,                                                # pc19 has to be validated manually
  86  undef ,                                                # pc20 no validation
  87  [ qw(c m h) ],                                 # pc21
  88  undef ,                                                # pc22 no validation
  89  [ qw(d n n n n m c c h) ],             # pc23
  90  [ qw(c p h) ],                                 # pc24
  91  [ qw(c c n n) ],                               # pc25
  92  [ qw(f m d t m c c bc) ],              # pc26
  93  [ qw(d n n n n m c c bc) ],    # pc27
  94  [ qw(c c m c d t p m bp n p bp bc) ], # pc28
  95  [ qw(c c n m) ],                               # pc29
  96  [ qw(c c n) ],                                 # pc30
  97  [ qw(c c n) ],                                 # pc31
  98  [ qw(c c n) ],                                 # pc32
  99  [ qw(c c n) ],                                 # pc33
 100  [ qw(c c m) ],                                 # pc34
 101  [ qw(c c m) ],                                 # pc35
 102  [ qw(c c m) ],                                 # pc36
 103  [ qw(c c n m) ],                               # pc37
 104  undef,                                                 # pc38 not interested
 105  [ qw(c m) ],                                   # pc39
 106  [ qw(c c m p n) ],                             # pc40
 107  [ qw(c n m h) ],                               # pc41
 108  [ qw(c c n) ],                                 # pc42
 109  undef,                                                 # pc43 don't handle it
 110  [ qw(c c n m m c) ],                   # pc44
 111  [ qw(c c n m) ],                               # pc45
 112  [ qw(c c n) ],                                 # pc46
 113  undef,                                                 # pc47
 114  undef,                                                 # pc48
 115  [ qw(c m h) ],                                 # pc49
 116  [ qw(c n h) ],                                 # pc50
 117  [ qw(c c n) ],                                 # pc51
 118  undef,
 119  undef,
 120  undef,
 121  undef,
 122  undef,
 123  undef,
 124  undef,
 125  undef,
 126  undef,                                                 # pc60
 127  undef,
 128  undef,
 129  undef,
 130  undef,
 131  undef,
 132  undef,
 133  undef,
 134  undef,
 135  undef,
 136  undef,                                                 # pc70
 137  undef,
 138  undef,
 139  [ qw(d n n n n n n m m m c c h) ],     # pc73
 140  undef,
 141  undef,
 142  undef,
 143  undef,
 144  undef,
 145  undef,
 146  undef,                                                 # pc80
 147  undef,
 148  undef,
 149  undef,
 150  [ qw(c c c m) ],                               # pc84
 151  [ qw(c c c m) ],                               # pc85
 152 );
 153
 154 # use the entry in the check list to check the field list presented
 155 # return OK if line NOT in check list (for now)
 156 sub check
 157 {
 158         my $n = shift;
 159         $n -= 10;
 160         return 0 if $n < 0 || $n > @checklist;
 161         my $ref = $checklist[$n];
 162         return 0 unless ref $ref;
 163
 164         my $i;
 165         shift;    # not interested in the first field
 166         for ($i = 0; $i < @$ref; $i++) {
 167                 my ($blank, $act) = $$ref[$i] =~ /^(b?)(\w)$/;
 168                 return 0 unless $act;
 169                 next if $blank && $_[$i] =~ /^[ \*]$/;
 170                 if ($act eq 'c') {
 171                         return $i+1 unless is_callsign($_[$i]);
 172                 } elsif ($act eq 'm') {
 173                         return $i+1 unless is_pctext($_[$i]);
 174                 } elsif ($act eq 'p') {
 175                         return $i+1 unless is_pcflag($_[$i]);
 176                 } elsif ($act eq 'f') {
 177                         return $i+1 unless is_freq($_[$i]);
 178                 } elsif ($act eq 'n') {
 179                         return $i+1 unless $_[$i] =~ /^[\d ]+$/;
 180                 } elsif ($act eq 'h') {
 181                         return $i+1 unless $_[$i] =~ /^H\d\d?$/;
 182                 } elsif ($act eq 'd') {
 183                         return $i+1 unless $_[$i] =~ /^\s*\d+-\w\w\w-[12][90]\d\d$/;
 184                 } elsif ($act eq 't') {
 185                         return $i+1 unless $_[$i] =~ /^[012]\d[012345]\dZ$/;
 186                 }
 187         }
 188         return 0;
 189 }
 190
 191 sub init
 192 {
 193         do "$main::data/hop_table.pl" if -e "$main::data/hop_table.pl";
 194         confess $@ if $@;
 195 }
 196
 197 #
 198 # obtain a new connection this is derived from dxchannel
 199 #
 200
 201 sub new
 202 {
 203         my $self = DXChannel::alloc(@_);
 204
 205         # add this node to the table, the values get filled in later
 206         my $pkg = shift;
 207         my $call = shift;
 208         $main::routeroot->add($call, '5000', Route::here(1)) if $call ne $main::mycall;
 209
 210         return $self;
 211 }
 212
 213 # this is how a pc connection starts (for an incoming connection)
 214 # issue a PC38 followed by a PC18, then wait for a PC20 (remembering
 215 # all the crap that comes between).
 216 sub start
 217 {
 218         my ($self, $line, $sort) = @_;
 219         my $call = $self->{call};
 220         my $user = $self->{user};
 221
 222         # log it
 223         my $host = $self->{conn}->{peerhost} || "unknown";
 224         Log('DXProt', "$call connected from $host");
 225
 226         # remember type of connection
 227         $self->{consort} = $line;
 228         $self->{outbound} = $sort eq 'O';
 229         my $priv = $user->priv;
 230         $priv = $user->priv(1) unless $priv;
 231         $self->{priv} = $priv;     # other clusters can always be 'normal' users
 232         $self->{lang} = $user->lang || 'en';
 233         $self->{isolate} = $user->{isolate};
 234         $self->{consort} = $line;       # save the connection type
 235         $self->{here} = 1;
 236         $self->{width} = 80;
 237
 238         # sort out registration
 239         $self->{registered} = 1;
 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 = $pingint unless defined $ping;
 264         $self->{pingint} = $ping;
 265         $self->{nopings} = $user->nopings || $obscount;
 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->sendinit;
 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 # send outgoing 'challenge'
 289 #
 290
 291 sub sendinit
 292 {
 293         my $self = shift;
 294         $self->send(pc18());
 295 }
 296
 297 #
 298 # This is the normal pcxx despatcher
 299 #
 300 sub normal
 301 {
 302         my ($self, $line) = @_;
 303         my @field = split /\^/, $line;
 304         return unless @field;
 305
 306         pop @field if $field[-1] eq '~';
 307
 308 #       print join(',', @field), "\n";
 309
 310
 311         # process PC frames, this will fail unless the frame starts PCnn
 312         my ($pcno) = $field[0] =~ /^PC(\d\d)/; # just get the number
 313         return unless $pcno;
 314         return if $pcno < 10 || $pcno > 99;
 315
 316         # check for and dump bad protocol messages
 317         my $n = check($pcno, @field);
 318         if ($n) {
 319                 dbg("PCPROT: bad field $n, dumped (" . parray($checklist[$pcno-10]) . ")") if isdbg('chanerr');
 320                 return;
 321         }
 322
 323         # local processing 1
 324         my $pcr;
 325         eval {
 326                 $pcr = Local::pcprot($self, $pcno, @field);
 327         };
 328 #       dbg("Local::pcprot error $@") if isdbg('local') if $@;
 329         return if $pcr;
 330
 331  SWITCH: {
 332                 if ($pcno == 10) {              # incoming talk
 333
 334                         # rsfp check
 335                         return if $rspfcheck and !$self->rspfcheck(0, $field[6], $field[1]);
 336
 337                         # will we allow it at all?
 338                         if ($censorpc) {
 339                                 my @bad;
 340                                 if (@bad = BadWords::check($field[3])) {
 341                                         dbg("PCPROT: Bad words: @bad, dropped") if isdbg('chanerr');
 342                                         return;
 343                                 }
 344                         }
 345
 346                         # is it for me or one of mine?
 347                         my ($from, $to, $via, $call, $dxchan);
 348                         $from = $field[1];
 349                         if ($field[5] gt ' ') {
 350                                 $via = $field[2];
 351                                 $to = $field[5];
 352                         } else {
 353                                 $to = $field[2];
 354                         }
 355
 356                         # if this is a 'nodx' node then ignore it
 357                         if ($badnode->in($field[6]) || ($via && $badnode->in($via))) {
 358                                 dbg("PCPROT: Bad Node, dropped") if isdbg('chanerr');
 359                                 return;
 360                         }
 361
 362                         # if this is a 'bad spotter' user then ignore it
 363                         my $nossid = $from;
 364                         $nossid =~ s/-\d+$//;
 365                         if ($badspotter->in($nossid)) {
 366                                 dbg("PCPROT: Bad Spotter, dropped") if isdbg('chanerr');
 367                                 return;
 368                         }
 369
 370                         # if we are converting announces to talk is it a dup?
 371                         if ($ann_to_talk) {
 372                                 if (AnnTalk::is_talk_candidate($from, $field[3]) && AnnTalk::dup($from, $to, $field[3])) {
 373                                         dbg("DXPROT: Dupe talk from announce, dropped") if isdbg('chanerr');
 374                                         return;
 375                                 }
 376                         }
 377
 378                         # it is here and logged on
 379                         $dxchan = DXChannel->get($main::myalias) if $to eq $main::mycall;
 380                         $dxchan = DXChannel->get($to) unless $dxchan;
 381                         if ($dxchan && $dxchan->is_user) {
 382                                 $field[3] =~ s/\%5E/^/g;
 383                                 $dxchan->talk($from, $to, $via, $field[3]);
 384                                 return;
 385                         }
 386
 387                         # is it elsewhere, visible on the cluster via the to address?
 388                         # note: this discards the via unless the to address is on
 389                         # the via address
 390                         my ($ref, $vref);
 391                         if ($ref = Route::get($to)) {
 392                                 $vref = Route::Node::get($via) if $via;
 393                                 $vref = undef unless $vref && grep $to eq $_, $vref->users;
 394                                 $ref->dxchan->talk($from, $to, $vref ? $via : undef, $field[3], $field[6]);
 395                                 return;
 396                         }
 397
 398                         # not visible here, send a message of condolence
 399                         $vref = undef;
 400                         $ref = Route::get($from);
 401                         $vref = $ref = Route::Node::get($field[6]) unless $ref;
 402                         if ($ref) {
 403                                 $dxchan = $ref->dxchan;
 404                                 $dxchan->talk($main::mycall, $from, $vref ? $vref->call : undef, $dxchan->msg('talknh', $to) );
 405                         }
 406                         return;
 407                 }
 408
 409                 if ($pcno == 11 || $pcno == 26) { # dx spot
 410
 411                         # route 'foreign' pc26s
 412                         if ($pcno == 26) {
 413                                 if ($field[7] ne $main::mycall) {
 414                                         $self->route($field[7], $line);
 415                                         return;
 416                                 }
 417                         }
 418
 419                         # rsfp check
 420 #                       return if $rspfcheck and !$self->rspfcheck(1, $field[7], $field[6]);
 421
 422                         # if this is a 'nodx' node then ignore it
 423                         if ($badnode->in($field[7])) {
 424                                 dbg("PCPROT: Bad Node, dropped") if isdbg('chanerr');
 425                                 return;
 426                         }
 427
 428                         # if this is a 'bad spotter' user then ignore it
 429                         my $nossid = $field[6];
 430                         $nossid =~ s/-\d+$//;
 431                         if ($badspotter->in($nossid)) {
 432                                 dbg("PCPROT: Bad Spotter, dropped") if isdbg('chanerr');
 433                                 return;
 434                         }
 435
 436                         # convert the date to a unix date
 437                         my $d = cltounix($field[3], $field[4]);
 438                         # bang out (and don't pass on) if date is invalid or the spot is too old (or too young)
 439                         if (!$d || ($pcno == 11 && ($d < $main::systime - $pc11_max_age || $d > $main::systime + 900))) {
 440                                 dbg("PCPROT: Spot ignored, invalid date or out of range ($field[3] $field[4])\n") if isdbg('chanerr');
 441                                 return;
 442                         }
 443
 444                         # is it 'baddx'
 445                         if ($baddx->in($field[2]) || BadWords::check($field[2]) || $field[2] =~ /COCK/) {
 446                                 dbg("PCPROT: Bad DX spot, ignored") if isdbg('chanerr');
 447                                 return;
 448                         }
 449
 450                         # do some de-duping
 451                         $field[5] =~ s/^\s+//;      # take any leading blanks off
 452                         $field[2] = unpad($field[2]);   # take off leading and trailing blanks from spotted callsign
 453                         if ($field[2] =~ /BUST\w*$/) {
 454                                 dbg("PCPROT: useless 'BUSTED' spot") if isdbg('chanerr');
 455                                 return;
 456                         }
 457                         if ($censorpc) {
 458                                 my @bad;
 459                                 if (@bad = BadWords::check($field[5])) {
 460                                         dbg("PCPROT: Bad words: @bad, dropped") if isdbg('chanerr');
 461                                         return;
 462                                 }
 463                         }
 464
 465
 466                         my @spot = Spot::prepare($field[1], $field[2], $d, $field[5], $field[6], $field[7]);
 467                         # global spot filtering on INPUT
 468                         if ($self->{inspotsfilter}) {
 469                                 my ($filter, $hops) = $self->{inspotsfilter}->it(@spot);
 470                                 unless ($filter) {
 471                                         dbg("PCPROT: Rejected by input spot filter") if isdbg('chanerr');
 472                                         return;
 473                                 }
 474                         }
 475
 476                         # this goes after the input filtering, but before the add
 477                         # so that if it is input filtered, it isn't added to the dup
 478                         # list. This allows it to come in from a "legitimate" source
 479                         if (Spot::dup($field[1], $field[2], $d, $field[5], $field[6])) {
 480                                 dbg("PCPROT: Duplicate Spot ignored\n") if isdbg('chanerr');
 481                                 return;
 482                         }
 483
 484                         # add it
 485                         Spot::add(@spot);
 486
 487             #
 488                         # @spot at this point contains:-
 489             # freq, spotted call, time, text, spotter, spotted cc, spotters cc, orig node
 490                         # then  spotted itu, spotted cq, spotters itu, spotters cq
 491                         # you should be able to route on any of these
 492             #
 493
 494                         # fix up qra locators of known users
 495                         my $user = DXUser->get_current($spot[4]);
 496                         if ($user) {
 497                                 my $qra = $user->qra;
 498                                 unless ($qra && is_qra($qra)) {
 499                                         my $lat = $user->lat;
 500                                         my $long = $user->long;
 501                                         if (defined $lat && defined $long) {
 502                                                 $user->qra(DXBearing::lltoqra($lat, $long));
 503                                                 $user->put;
 504                                         }
 505                                 }
 506
 507                                 # send a remote command to a distant cluster if it is visible and there is no
 508                                 # qra locator and we havn't done it for a month.
 509
 510                                 unless ($user->qra) {
 511                                         my $node;
 512                                         my $to = $user->homenode;
 513                                         my $last = $user->lastoper || 0;
 514                                         if ($send_opernam && $to && $to ne $main::mycall && $main::systime > $last + $DXUser::lastoperinterval && ($node = Route::Node::get($to)) ) {
 515                                                 my $cmd = "forward/opernam $spot[4]";
 516                                                 # send the rcmd but we aren't interested in the replies...
 517                                                 my $dxchan = $node->dxchan;
 518                                                 if ($dxchan && $dxchan->is_clx) {
 519                                                         route(undef, $to, pc84($main::mycall, $to, $main::mycall, $cmd));
 520                                                 } else {
 521                                                         route(undef, $to, pc34($main::mycall, $to, $cmd));
 522                                                 }
 523                                                 if ($to ne $field[7]) {
 524                                                         $to = $field[7];
 525                                                         $node = Route::Node::get($to);
 526                                                         if ($node) {
 527                                                                 $dxchan = $node->dxchan;
 528                                                                 if ($dxchan && $dxchan->is_clx) {
 529                                                                         route(undef, $to, pc84($main::mycall, $to, $main::mycall, $cmd));
 530                                                                 } else {
 531                                                                         route(undef, $to, pc34($main::mycall, $to, $cmd));
 532                                                                 }
 533                                                         }
 534                                                 }
 535                                                 $user->lastoper($main::systime);
 536                                                 $user->put;
 537                                         }
 538                                 }
 539                         }
 540
 541                         # local processing
 542                         my $r;
 543                         eval {
 544                                 $r = Local::spot($self, @spot);
 545                         };
 546 #                       dbg("Local::spot1 error $@") if isdbg('local') if $@;
 547                         return if $r;
 548
 549                         # DON'T be silly and send on PC26s!
 550                         return if $pcno == 26;
 551
 552                         # send out the filtered spots
 553                         send_dx_spot($self, $line, @spot) if @spot;
 554                         return;
 555                 }
 556
 557                 if ($pcno == 12) {              # announces
 558
 559 #                       return if $rspfcheck and !$self->rspfcheck(1, $field[5], $field[1]);
 560
 561                         # announce duplicate checking
 562                         $field[3] =~ s/^\s+//;  # remove leading blanks
 563
 564                         if ($censorpc) {
 565                                 my @bad;
 566                                 if (@bad = BadWords::check($field[3])) {
 567                                         dbg("PCPROT: Bad words: @bad, dropped") if isdbg('chanerr');
 568                                         return;
 569                                 }
 570                         }
 571
 572                         # if this is a 'nodx' node then ignore it
 573                         if ($badnode->in($field[5])) {
 574                                 dbg("PCPROT: Bad Node, dropped") if isdbg('chanerr');
 575                                 return;
 576                         }
 577
 578                         # if this is a 'bad spotter' user then ignore it
 579                         my $nossid = $field[1];
 580                         $nossid =~ s/-\d+$//;
 581                         if ($badspotter->in($nossid)) {
 582                                 dbg("PCPROT: Bad Spotter, dropped") if isdbg('chanerr');
 583                                 return;
 584                         }
 585
 586                         if ($field[2] eq '*' || $field[2] eq $main::mycall) {
 587
 588
 589                                 # here's a bit of fun, convert incoming ann with a callsign in the first word
 590                                 # or one saying 'to <call>' to a talk if we can route to the recipient
 591                                 if ($ann_to_talk) {
 592                                         my $call = AnnTalk::is_talk_candidate($field[1], $field[3]);
 593                                         if ($call) {
 594                                                 my $ref = Route::get($call);
 595                                                 if ($ref) {
 596                                                         my $dxchan = $ref->dxchan;
 597                                                         $dxchan->talk($field[1], $call, undef, $field[3], $field[5]) if $dxchan != $self;
 598                                                         return;
 599                                                 }
 600                                         }
 601                                 }
 602
 603                                 # send it
 604                                 $self->send_announce($line, @field[1..6]);
 605                         } else {
 606                                 $self->route($field[2], $line);
 607                         }
 608                         return;
 609                 }
 610
 611                 if ($pcno == 13) {
 612                         last SWITCH;
 613                 }
 614                 if ($pcno == 14) {
 615                         last SWITCH;
 616                 }
 617                 if ($pcno == 15) {
 618                         last SWITCH;
 619                 }
 620
 621                 if ($pcno == 16) {              # add a user
 622
 623                         if (eph_dup($line)) {
 624                                 dbg("PCPROT: dup PC16 detected") if isdbg('chanerr');
 625                                 return;
 626                         }
 627
 628                         # general checks
 629                         my $dxchan;
 630                         my $ncall = $field[1];
 631                         my $newline = "PC16^";
 632
 633                         # do I want users from this channel?
 634                         unless ($self->user->wantpc16) {
 635                                 dbg("PCPROT: don't send users to $self->{call}") if isdbg('chanerr');
 636                                 return;
 637                         }
 638                         # is it me?
 639                         if ($ncall eq $main::mycall) {
 640                                 dbg("PCPROT: trying to alter config on this node from outside!") if isdbg('chanerr');
 641                                 return;
 642                         }
 643                         my $parent = Route::Node::get($ncall);
 644
 645                         # if there is a parent, proceed, otherwise if there is a latent PC19 in the PC19list,
 646                         # fix it up in the routing tables and issue it forth before the PC16
 647                         unless ($parent) {
 648                                 my $nl = $pc19list{$ncall};
 649
 650                                 if ($nl && @field > 3) {                     # 3 because of the hop count!
 651
 652                                         # this is a new (remembered) node, now attach it to me if it isn't in filtered
 653                                         # and we haven't disallowed it
 654                                         my $user = DXUser->get_current($ncall);
 655                                         if (!$user) {
 656                                                 $user = DXUser->new($ncall);
 657                                                 $user->sort('A');
 658                                                 $user->priv(1);                   # I have relented and defaulted nodes
 659                                                 $user->lockout(1);
 660                                                 $user->homenode($ncall);
 661                                                 $user->node($ncall);
 662                                         }
 663
 664                                         my $wantpc19 = $user->wantroutepc19;
 665                                         if ($wantpc19 || !defined $wantpc19) {
 666                                                 my $new = Route->new($ncall);          # throw away
 667                                                 if ($self->in_filter_route($new)) {
 668                                                         my @nrout;
 669                                                         for (@$nl) {
 670                                                                 $parent = Route::Node::get($_->[0]);
 671                                                                 $dxchan = $parent->dxchan if $parent;
 672                                                                 if ($dxchan && $dxchan ne $self) {
 673                                                                         dbg("PCPROT: PC16 from $self->{call} trying to alter locally connected $ncall, ignored!") if isdbg('chanerr');
 674                                                                         $parent = undef;
 675                                                                 }
 676                                                                 if ($parent) {
 677                                                                         my $r = $parent->add($ncall, $_->[1], $_->[2]);
 678                                                                         push @nrout, $r unless @nrout;
 679                                                                 }
 680                                                         }
 681                                                         $user->wantroutepc19(1) unless defined $wantpc19;              # for now we work on the basis that pc16 = real route
 682                                                         $user->lastin($main::systime) unless DXChannel->get($ncall);
 683                                                         $user->put;
 684
 685                                                         # route the pc19 - this will cause 'stuttering PC19s' for a while
 686                                                         $self->route_pc19(@nrout) if @nrout ;
 687                                                         $parent = Route::Node::get($ncall);
 688                                                 } else {
 689                                                         return;
 690                                                 }
 691                                                 delete $pc19list{$ncall};
 692                                         }
 693                                 } else {
 694                                         dbg("PCPROT: Node $ncall not in config") if isdbg('chanerr');
 695                                         return;
 696                                 }
 697                         } else {
 698
 699                                 $dxchan = $parent->dxchan;
 700                                 if ($dxchan && $dxchan ne $self) {
 701                                         dbg("PCPROT: PC16 from $self->{call} trying to alter locally connected $ncall, ignored!") if isdbg('chanerr');
 702                                         return;
 703                                 }
 704
 705                                 # input filter if required
 706                                 return unless $self->in_filter_route($parent);
 707                         }
 708
 709                         my $i;
 710                         my @rout;
 711                         for ($i = 2; $i < $#field; $i++) {
 712                                 my ($call, $conf, $here) = $field[$i] =~ /^(\S+) (\S) (\d)/o;
 713                                 next unless $call && $conf && defined $here && is_callsign($call);
 714                                 next if $call eq $main::mycall;
 715
 716                                 eph_del_regex("^PC17\\^$call\\^$ncall");
 717
 718                                 $conf = $conf eq '*';
 719
 720                                 # reject this if we think it is a node already
 721                                 my $r = Route::Node::get($call);
 722                                 my $u = DXUser->get_current($call) unless $r;
 723                                 if ($r || ($u && $u->is_node)) {
 724                                         dbg("PCPROT: $call is a node") if isdbg('chanerr');
 725                                         next;
 726                                 }
 727
 728                                 $r = Route::User::get($call);
 729                                 my $flags = Route::here($here)|Route::conf($conf);
 730
 731                                 if ($r) {
 732                                         my $au = $r->addparent($parent);
 733                                         if ($r->flags != $flags) {
 734                                                 $r->flags($flags);
 735                                                 $au = $r;
 736                                         }
 737                                         push @rout, $r if $au;
 738                                 } else {
 739                                         push @rout, $parent->add_user($call, $flags);
 740                                 }
 741
 742
 743                                 # add this station to the user database, if required
 744                                 $call =~ s/-\d+$//o;        # remove ssid for users
 745                                 my $user = DXUser->get_current($call);
 746                                 $user = DXUser->new($call) if !$user;
 747                                 $user->homenode($parent->call) if !$user->homenode;
 748                                 $user->node($parent->call);
 749                                 $user->lastin($main::systime) unless DXChannel->get($call);
 750                                 $user->put;
 751                         }
 752
 753                         # queue up any messages (look for privates only)
 754                         DXMsg::queue_msg(1) if $self->state eq 'normal';
 755
 756                         $self->route_pc16($parent, @rout) if @rout;
 757                         return;
 758                 }
 759
 760                 if ($pcno == 17) {              # remove a user
 761                         my $dxchan;
 762                         my $ncall = $field[2];
 763                         my $ucall = $field[1];
 764
 765                         eph_del_regex("^PC16\\^$ncall.*$ucall");
 766
 767                         # do I want users from this channel?
 768                         unless ($self->user->wantpc16) {
 769                                 dbg("PCPROT: don't send users to $self->{call}") if isdbg('chanerr');
 770                                 return;
 771                         }
 772                         if ($ncall eq $main::mycall) {
 773                                 dbg("PCPROT: trying to alter config on this node from outside!") if isdbg('chanerr');
 774                                 return;
 775                         }
 776
 777                         my $uref = Route::User::get($ucall);
 778                         unless ($uref) {
 779                                 dbg("PCPROT: Route::User $ucall not in config") if isdbg('chanerr');
 780                                 return;
 781                         }
 782                         my $parent = Route::Node::get($ncall);
 783                         unless ($parent) {
 784                                 dbg("PCPROT: Route::Node $ncall not in config") if isdbg('chanerr');
 785                                 return;
 786                         }
 787
 788                         $dxchan = $parent->dxchan;
 789                         if ($dxchan && $dxchan ne $self) {
 790                                 dbg("PCPROT: PC17 from $self->{call} trying to alter locally connected $ncall, ignored!") if isdbg('chanerr');
 791                                 return;
 792                         }
 793
 794                         # input filter if required
 795                         return unless $self->in_filter_route($parent);
 796
 797                         $parent->del_user($uref);
 798
 799                         if (eph_dup($line)) {
 800                                 dbg("PCPROT: dup PC17 detected") if isdbg('chanerr');
 801                                 return;
 802                         }
 803
 804                         $self->route_pc17($parent, $uref);
 805                         return;
 806                 }
 807
 808                 if ($pcno == 18) {              # link request
 809                         $self->state('init');
 810
 811                         # record the type and version offered
 812                         if ($field[1] =~ /DXSpider Version: (\d+\.\d+) Build: (\d+\.\d+)/) {
 813                                 $self->version(53 + $1);
 814                                 $self->user->version(53 + $1);
 815                                 $self->build(0 + $2);
 816                                 $self->user->build(0 + $2);
 817                                 unless ($self->is_spider) {
 818                                         $self->user->sort('S');
 819                                         $self->user->put;
 820                                         $self->sort('S');
 821                                 }
 822                         } else {
 823                                 $self->version(50.0);
 824                                 $self->version($field[2] / 100) if $field[2] && $field[2] =~ /^\d+$/;
 825                                 $self->user->version($self->version);
 826                         }
 827
 828                         # first clear out any nodes on this dxchannel
 829                         my $parent = Route::Node::get($self->{call});
 830                         my @rout = $parent->del_nodes;
 831                         $self->route_pc21(@rout, $parent) if @rout;
 832                         $self->send_local_config();
 833                         $self->send(pc20());
 834                         return;             # we don't pass these on
 835                 }
 836
 837                 if ($pcno == 19) {              # incoming cluster list
 838                         my $i;
 839                         my $newline = "PC19^";
 840
 841                         if (eph_dup($line)) {
 842                                 dbg("PCPROT: dup PC19 detected") if isdbg('chanerr');
 843                                 return;
 844                         }
 845
 846                         # new routing list
 847                         my @rout;
 848                         my $parent = Route::Node::get($self->{call});
 849                         unless ($parent) {
 850                                 dbg("DXPROT: my parent $self->{call} has disappeared");
 851                                 $self->disconnect;
 852                                 return;
 853                         }
 854
 855                         # parse the PC19
 856                         for ($i = 1; $i < $#field-1; $i += 4) {
 857                                 my $here = $field[$i];
 858                                 my $call = uc $field[$i+1];
 859                                 my $conf = $field[$i+2];
 860                                 my $ver = $field[$i+3];
 861                                 next unless defined $here && defined $conf && is_callsign($call);
 862
 863                                 eph_del_regex("^PC(?:21\\^$call|17\\^[^\\^]+\\^$call)");
 864
 865                                 # check for sane parameters
 866 #                               $ver = 5000 if $ver eq '0000';
 867                                 next if $ver < 5000; # only works with version 5 software
 868                                 next if length $call < 3; # min 3 letter callsigns
 869                                 next if $call eq $main::mycall;
 870
 871                                 # check that this PC19 isn't trying to alter the wrong dxchan
 872                                 my $dxchan = DXChannel->get($call);
 873                                 if ($dxchan && $dxchan != $self) {
 874                                         dbg("PCPROT: PC19 from $self->{call} trying to alter wrong locally connected $call, ignored!") if isdbg('chanerr');
 875                                         next;
 876                                 }
 877
 878                                 # add this station to the user database, if required (don't remove SSID from nodes)
 879                                 my $user = DXUser->get_current($call);
 880                                 if (!$user) {
 881                                         $user = DXUser->new($call);
 882                                         $user->sort('A');
 883                                         $user->priv(1);                   # I have relented and defaulted nodes
 884                                         $user->lockout(1);
 885                                         $user->homenode($call);
 886                                         $user->node($call);
 887                                 }
 888
 889                                 my $r = Route::Node::get($call);
 890                                 my $flags = Route::here($here)|Route::conf($conf);
 891
 892                                 # modify the routing table if it is in it, otherwise store it in the pc19list for now
 893                                 if ($r) {
 894                                         my $ar;
 895                                         if ($call ne $parent->call) {
 896                                                 if ($self->in_filter_route($r)) {
 897                                                         $ar = $parent->add($call, $ver, $flags);
 898                                                         push @rout, $ar if $ar;
 899                                                 } else {
 900                                                         next;
 901                                                 }
 902                                         }
 903                                         if ($r->version ne $ver || $r->flags != $flags) {
 904                                                 $r->version($ver);
 905                                                 $r->flags($flags);
 906                                                 push @rout, $r unless $ar;
 907                                         }
 908                                 } else {
 909
 910                                         # if he is directly connected or allowed then add him, otherwise store him up for later
 911                                         if ($call eq $self->{call} || $user->wantroutepc19) {
 912                                                 my $new = Route->new($call);          # throw away
 913                                                 if ($self->in_filter_route($new)) {
 914                                                         my $ar = $parent->add($call, $ver, $flags);
 915                                                         $user->wantroutepc19(1) unless defined $user->wantroutepc19;
 916                                                         push @rout, $ar if $ar;
 917                                                 } else {
 918                                                         next;
 919                                                 }
 920                                         } else {
 921                                                 $pc19list{$call} = [] unless exists $pc19list{$call};
 922                                                 my $nl = $pc19list{$call};
 923                                                 push @{$pc19list{$call}}, [$self->{call}, $ver, $flags] unless grep $_->[0] eq $self->{call}, @$nl;
 924                                         }
 925                                 }
 926
 927                                 # unbusy and stop and outgoing mail (ie if somehow we receive another PC19 without a disconnect)
 928                                 my $mref = DXMsg::get_busy($call);
 929                                 $mref->stop_msg($call) if $mref;
 930
 931                                 $user->lastin($main::systime) unless DXChannel->get($call);
 932                                 $user->put;
 933                         }
 934
 935
 936                         $self->route_pc19(@rout) if @rout;
 937                         return;
 938                 }
 939
 940                 if ($pcno == 20) {              # send local configuration
 941                         $self->send_local_config();
 942                         $self->send(pc22());
 943                         $self->state('normal');
 944                         $self->{lastping} = 0;
 945                         return;
 946                 }
 947
 948                 if ($pcno == 21) {              # delete a cluster from the list
 949                         my $call = uc $field[1];
 950
 951                         eph_del_regex("^PC1[679].*$call");
 952
 953                         # if I get a PC21 from the same callsign as self then treat it
 954                         # as a PC39: I have gone away
 955                         if ($call eq $self->call) {
 956                                 $self->disconnect(1);
 957                                 return;
 958                         }
 959
 960                         # check to see if we are in the pc19list, if we are then don't bother with any of
 961                         # this routing table manipulation, just remove it from the list and dump it
 962                         my @rout;
 963                         if (my $nl = $pc19list{$call}) {
 964                                 $pc19list{$call} = [ grep {$_->[0] ne $self->{call}} @$nl ];
 965                                 delete $pc19list{$call} unless @{$pc19list{$call}};
 966                         } else {
 967
 968                                 my $parent = Route::Node::get($self->{call});
 969                                 unless ($parent) {
 970                                         dbg("DXPROT: my parent $self->{call} has disappeared");
 971                                         $self->disconnect;
 972                                         return;
 973                                 }
 974                                 if ($call ne $main::mycall) { # don't allow malicious buggers to disconnect me!
 975                                         my $node = Route::Node::get($call);
 976                                         if ($node) {
 977
 978                                                 my $dxchan = DXChannel->get($call);
 979                                                 if ($dxchan && $dxchan != $self) {
 980                                                         dbg("PCPROT: PC21 from $self->{call} trying to alter locally connected $call, ignored!") if isdbg('chanerr');
 981                                                         return;
 982                                                 }
 983
 984                                                 # input filter it
 985                                                 return unless $self->in_filter_route($node);
 986
 987                                                 # routing objects
 988                                                 push @rout, $node->del($parent);
 989                                         }
 990                                 } else {
 991                                         dbg("PCPROT: I WILL _NOT_ be disconnected!") if isdbg('chanerr');
 992                                         return;
 993                                 }
 994                         }
 995
 996                         $self->route_pc21(@rout) if @rout;
 997                         return;
 998                 }
 999
1000                 if ($pcno == 22) {
1001                         $self->state('normal');
1002                         $self->{lastping} = 0;
1003                         return;
1004                 }
1005
1006                 if ($pcno == 23 || $pcno == 27) { # WWV info
1007
1008                         # route 'foreign' pc27s
1009                         if ($pcno == 27) {
1010                                 if ($field[8] ne $main::mycall) {
1011                                         $self->route($field[8], $line);
1012                                         return;
1013                                 }
1014                         }
1015
1016                         return if $rspfcheck and !$self->rspfcheck(1, $field[8], $field[7]);
1017
1018                         # do some de-duping
1019                         my $d = cltounix($field[1], sprintf("%02d18Z", $field[2]));
1020                         my $sfi = unpad($field[3]);
1021                         my $k = unpad($field[4]);
1022                         my $i = unpad($field[5]);
1023                         my ($r) = $field[6] =~ /R=(\d+)/;
1024                         $r = 0 unless $r;
1025                         if (($pcno == 23 && $d < $main::systime - $pc23_max_age) || $d > $main::systime + 1500 || $field[2] < 0 || $field[2] > 23) {
1026                                 dbg("PCPROT: WWV Date ($field[1] $field[2]) out of range") if isdbg('chanerr');
1027                                 return;
1028                         }
1029                         if (Geomag::dup($d,$sfi,$k,$i,$field[6])) {
1030                                 dbg("PCPROT: Dup WWV Spot ignored\n") if isdbg('chanerr');
1031                                 return;
1032                         }
1033                         $field[7] =~ s/-\d+$//o;            # remove spotter's ssid
1034
1035                         my $wwv = Geomag::update($d, $field[2], $sfi, $k, $i, @field[6..8], $r);
1036
1037                         my $rep;
1038                         eval {
1039                                 $rep = Local::wwv($self, $field[1], $field[2], $sfi, $k, $i, @field[6..8], $r);
1040                         };
1041 #                       dbg("Local::wwv2 error $@") if isdbg('local') if $@;
1042                         return if $rep;
1043
1044                         # DON'T be silly and send on PC27s!
1045                         return if $pcno == 27;
1046
1047                         # broadcast to the eager world
1048                         send_wwv_spot($self, $line, $d, $field[2], $sfi, $k, $i, @field[6..8]);
1049                         return;
1050                 }
1051
1052                 if ($pcno == 24) {              # set here status
1053                         my $call = uc $field[1];
1054                         my ($nref, $uref);
1055                         $nref = Route::Node::get($call);
1056                         $uref = Route::User::get($call);
1057                         return unless $nref || $uref;   # if we don't know where they are, it's pointless sending it on
1058
1059                         unless (eph_dup($line)) {
1060                                 $nref->here($field[2]) if $nref;
1061                                 $uref->here($field[2]) if $uref;
1062                                 my $ref = $nref || $uref;
1063                                 return unless $self->in_filter_route($ref);
1064                                 $self->route_pc24($ref, $field[3]);
1065                         }
1066                         return;
1067                 }
1068
1069                 if ($pcno == 25) {      # merge request
1070                         if ($field[1] ne $main::mycall) {
1071                                 $self->route($field[1], $line);
1072                                 return;
1073                         }
1074                         if ($field[2] eq $main::mycall) {
1075                                 dbg("PCPROT: Trying to merge to myself, ignored") if isdbg('chanerr');
1076                                 return;
1077                         }
1078
1079                         Log('DXProt', "Merge request for $field[3] spots and $field[4] WWV from $field[2]");
1080
1081                         # spots
1082                         if ($field[3] > 0) {
1083                                 my @in = reverse Spot::search(1, undef, undef, 0, $field[3]);
1084                                 my $in;
1085                                 foreach $in (@in) {
1086                                         $self->send(pc26(@{$in}[0..4], $field[2]));
1087                                 }
1088                         }
1089
1090                         # wwv
1091                         if ($field[4] > 0) {
1092                                 my @in = reverse Geomag::search(0, $field[4], time, 1);
1093                                 my $in;
1094                                 foreach $in (@in) {
1095                                         $self->send(pc27(@{$in}[0..5], $field[2]));
1096                                 }
1097                         }
1098                         return;
1099                 }
1100
1101                 if (($pcno >= 28 && $pcno <= 33) || $pcno == 40 || $pcno == 42 || $pcno == 49) { # mail/file handling
1102                         return if $pcno == 49 && eph_dup($line);
1103                         if ($pcno == 49 || $field[1] eq $main::mycall) {
1104                                 DXMsg::process($self, $line);
1105                         } else {
1106                                 $self->route($field[1], $line) unless $self->is_clx;
1107                         }
1108                         return;
1109                 }
1110
1111                 if ($pcno == 34 || $pcno == 36) { # remote commands (incoming)
1112                         if (eph_dup($line, $eph_pc34_restime)) {
1113                                 dbg("PCPROT: dupe") if isdbg('chanerr');
1114                         } else {
1115                                 $self->process_rcmd($field[1], $field[2], $field[2], $field[3]);
1116                         }
1117                         return;
1118                 }
1119
1120                 if ($pcno == 35) {              # remote command replies
1121                         eph_del_regex("^PC35\\^$field[2]\\^$field[1]\\^");
1122                         $self->process_rcmd_reply($field[1], $field[2], $field[1], $field[3]);
1123                         return;
1124                 }
1125
1126                 # for pc 37 see 44 onwards
1127
1128                 if ($pcno == 38) {              # node connected list from neighbour
1129                         return;
1130                 }
1131
1132                 if ($pcno == 39) {              # incoming disconnect
1133                         if ($field[1] eq $self->{call}) {
1134                                 $self->disconnect(1);
1135                         } else {
1136                                 dbg("PCPROT: came in on wrong channel") if isdbg('chanerr');
1137                         }
1138                         return;
1139                 }
1140
1141                 if ($pcno == 41) {              # user info
1142                         my $call = $field[1];
1143
1144                         if (eph_dup($line, $eph_info_restime)) {
1145                                 dbg("PCPROT: dupe") if isdbg('chanerr');
1146                                 return;
1147                         }
1148
1149                         # input filter if required
1150 #                       my $ref = Route::get($call) || Route->new($call);
1151 #                       return unless $self->in_filter_route($ref);
1152
1153                         if ($field[3] eq $field[2] || $field[3] =~ /^\s*$/) {
1154                                 dbg('PCPROT: invalid value') if isdbg('chanerr');
1155                                 return;
1156                         }
1157
1158                         # add this station to the user database, if required
1159                         my $user = DXUser->get_current($call);
1160                         $user = DXUser->new($call) unless $user;
1161
1162                         if ($field[2] == 1) {
1163                                 $user->name($field[3]);
1164                         } elsif ($field[2] == 2) {
1165                                 $user->qth($field[3]);
1166                         } elsif ($field[2] == 3) {
1167                                 if (is_latlong($field[3])) {
1168                                         my ($lat, $long) = DXBearing::stoll($field[3]);
1169                                         $user->lat($lat);
1170                                         $user->long($long);
1171                                         $user->qra(DXBearing::lltoqra($lat, $long));
1172                                 } else {
1173                                         dbg('PCPROT: not a valid lat/long') if isdbg('chanerr');
1174                                         return;
1175                                 }
1176                         } elsif ($field[2] == 4) {
1177                                 $user->homenode($field[3]);
1178                         } elsif ($field[2] == 5) {
1179                                 if (is_qra(uc $field[3])) {
1180                                         my ($lat, $long) = DXBearing::qratoll(uc $field[3]);
1181                                         $user->lat($lat);
1182                                         $user->long($long);
1183                                         $user->qra(uc $field[3]);
1184                                 } else {
1185                                         dbg('PCPROT: not a valid QRA locator') if isdbg('chanerr');
1186                                         return;
1187                                 }
1188                         }
1189                         $user->lastoper($main::systime);   # to cut down on excessive for/opers being generated
1190                         $user->put;
1191
1192                         unless ($self->{isolate}) {
1193                                 DXChannel::broadcast_nodes($line, $self); # send it to everyone but me
1194                         }
1195
1196 #  perhaps this IS what we want after all
1197 #                       $self->route_pc41($ref, $call, $field[2], $field[3], $field[4]);
1198                         return;
1199                 }
1200
1201                 if ($pcno == 43) {
1202                         last SWITCH;
1203                 }
1204
1205                 if ($pcno == 37 || $pcno == 44 || $pcno == 45 || $pcno == 46 || $pcno == 47 || $pcno == 48) {
1206                         DXDb::process($self, $line);
1207                         return;
1208                 }
1209
1210                 if ($pcno == 50) {              # keep alive/user list
1211                         my $call = $field[1];
1212                         my $node = Route::Node::get($call);
1213                         if ($node) {
1214                                 return unless $node->call eq $self->{call};
1215                                 $node->usercount($field[2]);
1216
1217                                 # input filter if required
1218                                 return unless $self->in_filter_route($node);
1219
1220                                 $self->route_pc50($node, $field[2], $field[3]) unless eph_dup($line);
1221                         }
1222                         return;
1223                 }
1224
1225                 if ($pcno == 51) {              # incoming ping requests/answers
1226                         my $to = $field[1];
1227                         my $from = $field[2];
1228                         my $flag = $field[3];
1229
1230
1231                         # is it for us?
1232                         if ($to eq $main::mycall) {
1233                                 if ($flag == 1) {
1234                                         $self->send(pc51($from, $to, '0'));
1235                                 } else {
1236                                         # it's a reply, look in the ping list for this one
1237                                         my $ref = $pings{$from};
1238                                         if ($ref) {
1239                                                 my $tochan =  DXChannel->get($from);
1240                                                 while (@$ref) {
1241                                                         my $r = shift @$ref;
1242                                                         my $dxchan = DXChannel->get($r->{call});
1243                                                         next unless $dxchan;
1244                                                         my $t = tv_interval($r->{t}, [ gettimeofday ]);
1245                                                         if ($dxchan->is_user) {
1246                                                                 my $s = sprintf "%.2f", $t;
1247                                                                 my $ave = sprintf "%.2f", $tochan ? ($tochan->{pingave} || $t) : $t;
1248                                                                 $dxchan->send($dxchan->msg('pingi', $from, $s, $ave))
1249                                                         } elsif ($dxchan->is_node) {
1250                                                                 if ($tochan) {
1251                                                                         my $nopings = $tochan->user->nopings || 2;
1252                                                                         push @{$tochan->{pingtime}}, $t;
1253                                                                         shift @{$tochan->{pingtime}} if @{$tochan->{pingtime}} > 6;
1254
1255                                                                         # cope with a missed ping, this means you must set the pingint large enough
1256                                                                         if ($t > $tochan->{pingint}  && $t < 2 * $tochan->{pingint} ) {
1257                                                                                 $t -= $tochan->{pingint};
1258                                                                         }
1259
1260                                                                         # calc smoothed RTT a la TCP
1261                                                                         if (@{$tochan->{pingtime}} == 1) {
1262                                                                                 $tochan->{pingave} = $t;
1263                                                                         } else {
1264                                                                                 $tochan->{pingave} = $tochan->{pingave} + (($t - $tochan->{pingave}) / 6);
1265                                                                         }
1266                                                                         $tochan->{nopings} = $nopings; # pump up the timer
1267                                                                 }
1268                                                         }
1269                                                 }
1270                                         }
1271                                 }
1272                         } else {
1273                                 if (eph_dup($line)) {
1274                                         dbg("PCPROT: dup PC51 detected") if isdbg('chanerr');
1275                                         return;
1276                                 }
1277                                 # route down an appropriate thingy
1278                                 $self->route($to, $line);
1279                         }
1280                         return;
1281                 }
1282
1283                 if ($pcno == 75) {              # dunno but route it
1284                         my $call = $field[1];
1285                         if ($call ne $main::mycall) {
1286                                 $self->route($call, $line);
1287                         }
1288                         return;
1289                 }
1290
1291                 if ($pcno == 73) {  # WCY broadcasts
1292                         my $call = $field[1];
1293
1294                         # do some de-duping
1295                         my $d = cltounix($call, sprintf("%02d18Z", $field[2]));
1296                         if (($pcno == 23 && $d < $main::systime - $pc23_max_age) || $d > $main::systime + 1500 || $field[2] < 0 || $field[2] > 23) {
1297                                 dbg("PCPROT: WCY Date ($call $field[2]) out of range") if isdbg('chanerr');
1298                                 return;
1299                         }
1300                         @field = map { unpad($_) } @field;
1301                         if (WCY::dup($d)) {
1302                                 dbg("PCPROT: Dup WCY Spot ignored\n") if isdbg('chanerr');
1303                                 return;
1304                         }
1305
1306                         my $wcy = WCY::update($d, @field[2..12]);
1307
1308                         my $rep;
1309                         eval {
1310                                 $rep = Local::wcy($self, @field[1..12]);
1311                         };
1312                         # dbg("Local::wcy error $@") if isdbg('local') if $@;
1313                         return if $rep;
1314
1315                         # broadcast to the eager world
1316                         send_wcy_spot($self, $line, $d, @field[2..12]);
1317                         return;
1318                 }
1319
1320                 if ($pcno == 84) { # remote commands (incoming)
1321                         $self->process_rcmd($field[1], $field[2], $field[3], $field[4]);
1322                         return;
1323                 }
1324
1325                 if ($pcno == 85) {              # remote command replies
1326                         $self->process_rcmd_reply($field[1], $field[2], $field[3], $field[4]);
1327
1328                         return;
1329                 }
1330                 if ($pcno == 90) {              # new style PC16,17,19,21
1331                         return;
1332                 }
1333         }
1334
1335         # if get here then rebroadcast the thing with its Hop count decremented (if
1336         # there is one). If it has a hop count and it decrements to zero then don't
1337         # rebroadcast it.
1338         #
1339         # NOTE - don't arrive here UNLESS YOU WANT this lump of protocol to be
1340         #        REBROADCAST!!!!
1341         #
1342
1343         if (eph_dup($line)) {
1344                 dbg("PCPROT: Ephemeral dup, dropped") if isdbg('chanerr');
1345         } else {
1346                 unless ($self->{isolate}) {
1347                         DXChannel::broadcast_nodes($line, $self); # send it to everyone but me
1348                 }
1349         }
1350 }
1351
1352 #
1353 # This is called from inside the main cluster processing loop and is used
1354 # for despatching commands that are doing some long processing job
1355 #
1356 sub process
1357 {
1358         my $t = time;
1359         my @dxchan = DXChannel->get_all();
1360         my $dxchan;
1361         my $pc50s;
1362
1363         # send out a pc50 on EVERY channel all at once
1364         if ($t >= $last_pc50 + $DXProt::pc50_interval) {
1365                 $pc50s = pc50($main::me, scalar DXChannel::get_all_users);
1366                 eph_dup($pc50s);
1367                 $last_pc50 = $t;
1368         }
1369
1370         foreach $dxchan (@dxchan) {
1371                 next unless $dxchan->is_node();
1372                 next if $dxchan == $main::me;
1373
1374                 # send the pc50 or PC90
1375                 $dxchan->send($pc50s) if $pc50s;
1376
1377                 # send a ping out on this channel
1378                 if ($dxchan->{pingint} && $t >= $dxchan->{pingint} + $dxchan->{lastping}) {
1379                         if ($dxchan->{nopings} <= 0) {
1380                                 $dxchan->disconnect;
1381                         } else {
1382                                 addping($main::mycall, $dxchan->call);
1383                                 $dxchan->{nopings} -= 1;
1384                                 $dxchan->{lastping} = $t;
1385                         }
1386                 }
1387         }
1388
1389         # every ten seconds
1390         if ($t - $last10 >= 10) {
1391                 # clean out ephemera
1392
1393                 eph_clean();
1394
1395                 $last10 = $t;
1396         }
1397
1398         if ($main::systime - 3600 > $last_hour) {
1399                 $last_hour = $main::systime;
1400         }
1401 }
1402
1403 #
1404 # finish up a pc context
1405 #
1406
1407 #
1408 # some active measures
1409 #
1410
1411
1412 sub send_dx_spot
1413 {
1414         my $self = shift;
1415         my $line = shift;
1416         my @dxchan = DXChannel->get_all();
1417         my $dxchan;
1418
1419         # send it if it isn't the except list and isn't isolated and still has a hop count
1420         # taking into account filtering and so on
1421         foreach $dxchan (@dxchan) {
1422                 next if $dxchan == $main::me;
1423                 next if $dxchan == $self && $self->is_node;
1424                 $dxchan->dx_spot($line, $self->{isolate}, @_, $self->{call});
1425         }
1426 }
1427
1428 sub dx_spot
1429 {
1430         my $self = shift;
1431         my $line = shift;
1432         my $isolate = shift;
1433         my ($filter, $hops);
1434
1435         if ($self->{spotsfilter}) {
1436                 ($filter, $hops) = $self->{spotsfilter}->it(@_);
1437                 return unless $filter;
1438         }
1439         send_prot_line($self, $filter, $hops, $isolate, $line);
1440 }
1441
1442 sub send_prot_line
1443 {
1444         my ($self, $filter, $hops, $isolate, $line) = @_;
1445         my $routeit;
1446
1447         if ($hops) {
1448                 $routeit = $line;
1449                 $routeit =~ s/\^H\d+\^\~$/\^H$hops\^\~/;
1450         } else {
1451                 $routeit = adjust_hops($self, $line);  # adjust its hop count by node name
1452                 return unless $routeit;
1453         }
1454         if ($filter) {
1455                 $self->send($routeit);
1456         } else {
1457                 $self->send($routeit) unless $self->{isolate} || $isolate;
1458         }
1459 }
1460
1461
1462 sub send_wwv_spot
1463 {
1464         my $self = shift;
1465         my $line = shift;
1466         my @dxchan = DXChannel->get_all();
1467         my $dxchan;
1468         my ($wwv_dxcc, $wwv_itu, $wwv_cq, $org_dxcc, $org_itu, $org_cq) = (0..0);
1469         my @dxcc = Prefix::extract($_[6]);
1470         if (@dxcc > 0) {
1471                 $wwv_dxcc = $dxcc[1]->dxcc;
1472                 $wwv_itu = $dxcc[1]->itu;
1473                 $wwv_cq = $dxcc[1]->cq;
1474         }
1475         @dxcc = Prefix::extract($_[7]);
1476         if (@dxcc > 0) {
1477                 $org_dxcc = $dxcc[1]->dxcc;
1478                 $org_itu = $dxcc[1]->itu;
1479                 $org_cq = $dxcc[1]->cq;
1480         }
1481
1482         # send it if it isn't the except list and isn't isolated and still has a hop count
1483         # taking into account filtering and so on
1484         foreach $dxchan (@dxchan) {
1485                 next if $dxchan == $main::me;
1486                 next if $dxchan == $self && $self->is_node;
1487                 my $routeit;
1488                 my ($filter, $hops);
1489
1490                 $dxchan->wwv($line, $self->{isolate}, @_, $self->{call}, $wwv_dxcc, $wwv_itu, $wwv_cq, $org_dxcc, $org_itu, $org_cq);
1491         }
1492
1493 }
1494
1495 sub wwv
1496 {
1497         my $self = shift;
1498         my $line = shift;
1499         my $isolate = shift;
1500         my ($filter, $hops);
1501
1502         if ($self->{wwvfilter}) {
1503                 ($filter, $hops) = $self->{wwvfilter}->it(@_);
1504                 return unless $filter;
1505         }
1506         send_prot_line($self, $filter, $hops, $isolate, $line)
1507 }
1508
1509 sub send_wcy_spot
1510 {
1511         my $self = shift;
1512         my $line = shift;
1513         my @dxchan = DXChannel->get_all();
1514         my $dxchan;
1515         my ($wcy_dxcc, $wcy_itu, $wcy_cq, $org_dxcc, $org_itu, $org_cq) = (0..0);
1516         my @dxcc = Prefix::extract($_[10]);
1517         if (@dxcc > 0) {
1518                 $wcy_dxcc = $dxcc[1]->dxcc;
1519                 $wcy_itu = $dxcc[1]->itu;
1520                 $wcy_cq = $dxcc[1]->cq;
1521         }
1522         @dxcc = Prefix::extract($_[11]);
1523         if (@dxcc > 0) {
1524                 $org_dxcc = $dxcc[1]->dxcc;
1525                 $org_itu = $dxcc[1]->itu;
1526                 $org_cq = $dxcc[1]->cq;
1527         }
1528
1529         # send it if it isn't the except list and isn't isolated and still has a hop count
1530         # taking into account filtering and so on
1531         foreach $dxchan (@dxchan) {
1532                 next if $dxchan == $main::me;
1533                 next if $dxchan == $self;
1534
1535                 $dxchan->wcy($line, $self->{isolate}, @_, $self->{call}, $wcy_dxcc, $wcy_itu, $wcy_cq, $org_dxcc, $org_itu, $org_cq);
1536         }
1537 }
1538
1539 sub wcy
1540 {
1541         my $self = shift;
1542         my $line = shift;
1543         my $isolate = shift;
1544         my ($filter, $hops);
1545
1546         if ($self->{wcyfilter}) {
1547                 ($filter, $hops) = $self->{wcyfilter}->it(@_);
1548                 return unless $filter;
1549         }
1550         send_prot_line($self, $filter, $hops, $isolate, $line) if $self->is_clx || $self->is_spider || $self->is_dxnet;
1551 }
1552
1553 # send an announce
1554 sub send_announce
1555 {
1556         my $self = shift;
1557         my $line = shift;
1558         my @dxchan = DXChannel->get_all();
1559         my $dxchan;
1560         my $target;
1561         my $to = 'To ';
1562         my $text = unpad($_[2]);
1563
1564         if ($_[3] eq '*') {     # sysops
1565                 $target = "SYSOP";
1566         } elsif ($_[3] gt ' ') { # speciality list handling
1567                 my ($name) = split /\./, $_[3];
1568                 $target = "$name"; # put the rest in later (if bothered)
1569         }
1570
1571         if ($_[5] eq '1') {
1572                 $target = "WX";
1573                 $to = '';
1574         }
1575         $target = "ALL" if !$target;
1576
1577
1578         # obtain country codes etc
1579         my ($ann_dxcc, $ann_itu, $ann_cq, $org_dxcc, $org_itu, $org_cq) = (0..0);
1580         my ($ann_state, $org_state) = ("", "");
1581         my @dxcc = Prefix::extract($_[0]);
1582         if (@dxcc > 0) {
1583                 $ann_dxcc = $dxcc[1]->dxcc;
1584                 $ann_itu = $dxcc[1]->itu;
1585                 $ann_cq = $dxcc[1]->cq;
1586                 $ann_state = $dxcc[1]->state;
1587         }
1588         @dxcc = Prefix::extract($_[4]);
1589         if (@dxcc > 0) {
1590                 $org_dxcc = $dxcc[1]->dxcc;
1591                 $org_itu = $dxcc[1]->itu;
1592                 $org_cq = $dxcc[1]->cq;
1593                 $org_state = $dxcc[1]->state;
1594         }
1595
1596         if ($self->{inannfilter}) {
1597                 my ($filter, $hops) =
1598                         $self->{inannfilter}->it(@_, $self->{call},
1599                                                                          $ann_dxcc, $ann_itu, $ann_cq,
1600                                                                          $org_dxcc, $org_itu, $org_cq, $ann_state, $org_state);
1601                 unless ($filter) {
1602                         dbg("PCPROT: Rejected by input announce filter") if isdbg('chanerr');
1603                         return;
1604                 }
1605         }
1606
1607         if (AnnTalk::dup($_[0], $_[1], $_[2])) {
1608                 dbg("PCPROT: Duplicate Announce ignored") if isdbg('chanerr');
1609                 return;
1610         }
1611
1612         Log('ann', $target, $_[0], $text);
1613
1614         # send it if it isn't the except list and isn't isolated and still has a hop count
1615         # taking into account filtering and so on
1616         foreach $dxchan (@dxchan) {
1617                 next if $dxchan == $main::me;
1618                 next if $dxchan == $self && $self->is_node;
1619                 $dxchan->announce($line, $self->{isolate}, $to, $target, $text, @_, $self->{call}, $ann_dxcc, $ann_itu, $ann_cq, $org_dxcc, $org_itu, $org_cq);
1620         }
1621 }
1622
1623 sub announce
1624 {
1625         my $self = shift;
1626         my $line = shift;
1627         my $isolate = shift;
1628         my $to = shift;
1629         my $target = shift;
1630         my $text = shift;
1631         my ($filter, $hops);
1632
1633         if ($self->{annfilter}) {
1634                 ($filter, $hops) = $self->{annfilter}->it(@_);
1635                 return unless $filter;
1636         }
1637         send_prot_line($self, $filter, $hops, $isolate, $line) unless $_[1] eq $main::mycall;
1638 }
1639
1640
1641 sub send_local_config
1642 {
1643         my $self = shift;
1644         my $node;
1645         my @nodes;
1646         my @localnodes;
1647         my @remotenodes;
1648
1649         dbg('DXProt::send_local_config') if isdbg('trace');
1650
1651         # send our nodes
1652         if ($self->{isolate}) {
1653                 @localnodes = ( $main::routeroot );
1654         } else {
1655                 # create a list of all the nodes that are not connected to this connection
1656                 # and are not themselves isolated, this to make sure that isolated nodes
1657         # don't appear outside of this node
1658                 my @dxchan = grep { $_->call ne $main::mycall && $_ != $self && !$_->{isolate} } DXChannel::get_all_nodes();
1659                 @localnodes = map { my $r = Route::Node::get($_->{call}); $r ? $r : () } @dxchan if @dxchan;
1660                 my @intcalls = map { $_->nodes } @localnodes if @localnodes;
1661                 my $ref = Route::Node::get($self->{call});
1662                 my @rnodes = $ref->nodes;
1663                 for my $node (@intcalls) {
1664                         push @remotenodes, Route::Node::get($node) unless grep $node eq $_, @rnodes;
1665                 }
1666                 unshift @localnodes, $main::routeroot;
1667         }
1668
1669
1670         $self->send_route(\&pc19, scalar(@localnodes)+scalar(@remotenodes), @localnodes, @remotenodes);
1671
1672         # get all the users connected on the above nodes and send them out
1673         foreach $node (@localnodes, @remotenodes) {
1674                 if ($node) {
1675                         my @rout = map {my $r = Route::User::get($_); $r ? ($r) : ()} $node->users;
1676                         $self->send_route(\&pc16, 1, $node, @rout) if @rout && $self->user->wantsendpc16;
1677                 } else {
1678                         dbg("sent a null value") if isdbg('chanerr');
1679                 }
1680         }
1681 }
1682
1683 #
1684 # route a message down an appropriate interface for a callsign
1685 #
1686 # is called route(to, pcline);
1687 #
1688 sub route
1689 {
1690         my ($self, $call, $line) = @_;
1691
1692         if (ref $self && $call eq $self->{call}) {
1693                 dbg("PCPROT: Trying to route back to source, dropped") if isdbg('chanerr');
1694                 return;
1695         }
1696
1697         # always send it down the local interface if available
1698         my $dxchan = DXChannel->get($call);
1699         unless ($dxchan) {
1700                 my $cl = Route::get($call);
1701                 $dxchan = $cl->dxchan if $cl;
1702                 if (ref $dxchan) {
1703                         if (ref $self && $dxchan eq $self) {
1704                                 dbg("PCPROT: Trying to route back to source, dropped") if isdbg('chanerr');
1705                                 return;
1706                         }
1707                 }
1708         }
1709         if ($dxchan) {
1710                 my $routeit = adjust_hops($dxchan, $line);   # adjust its hop count by node name
1711                 if ($routeit) {
1712                         $dxchan->send($routeit) unless $dxchan == $main::me;
1713                 }
1714         } else {
1715                 dbg("PCPROT: No route available, dropped") if isdbg('chanerr');
1716         }
1717 }
1718
1719 #
1720 # obtain the hops from the list for this callsign and pc no
1721 #
1722
1723 sub get_hops
1724 {
1725         my $pcno = shift;
1726         my $hops = $DXProt::hopcount{$pcno};
1727         $hops = $DXProt::def_hopcount if !$hops;
1728         return "H$hops";
1729 }
1730
1731 #
1732 # adjust the hop count on a per node basis using the user loadable
1733 # hop table if available or else decrement an existing one
1734 #
1735
1736 sub adjust_hops
1737 {
1738         my $self = shift;
1739         my $s = shift;
1740         my $call = $self->{call};
1741         my $hops;
1742
1743         if (($hops) = $s =~ /\^H(\d+)\^~?$/o) {
1744                 my ($pcno) = $s =~ /^PC(\d\d)/o;
1745                 confess "$call called adjust_hops with '$s'" unless $pcno;
1746                 my $ref = $nodehops{$call} if %nodehops;
1747                 if ($ref) {
1748                         my $newhops = $ref->{$pcno};
1749                         return "" if defined $newhops && $newhops == 0;
1750                         $newhops = $ref->{default} unless $newhops;
1751                         return "" if defined $newhops && $newhops == 0;
1752                         $newhops = $hops if !$newhops;
1753                         $s =~ s/\^H(\d+)(\^~?)$/\^H$newhops$2/ if $newhops;
1754                 } else {
1755                         # simply decrement it
1756                         $hops--;
1757                         return "" if !$hops;
1758                         $s =~ s/\^H(\d+)(\^~?)$/\^H$hops$2/ if $hops;
1759                 }
1760         }
1761         return $s;
1762 }
1763
1764 #
1765 # load hop tables
1766 #
1767 sub load_hops
1768 {
1769         my $self = shift;
1770         return $self->msg('lh1') unless -e "$main::data/hop_table.pl";
1771         do "$main::data/hop_table.pl";
1772         return $@ if $@;
1773         return ();
1774 }
1775
1776
1777 # add a ping request to the ping queues
1778 sub addping
1779 {
1780         my ($from, $to) = @_;
1781         my $ref = $pings{$to} || [];
1782         my $r = {};
1783         $r->{call} = $from;
1784         $r->{t} = [ gettimeofday ];
1785         route(undef, $to, pc51($to, $main::mycall, 1));
1786         push @$ref, $r;
1787         $pings{$to} = $ref;
1788 }
1789
1790 sub process_rcmd
1791 {
1792         my ($self, $tonode, $fromnode, $user, $cmd) = @_;
1793         if ($tonode eq $main::mycall) {
1794                 my $ref = DXUser->get_current($fromnode);
1795                 my $cref = Route::Node::get($fromnode);
1796                 Log('rcmd', 'in', $ref->{priv}, $fromnode, $cmd);
1797                 if ($cmd !~ /^\s*rcmd/i && $cref && $ref && $cref->call eq $ref->homenode) { # not allowed to relay RCMDS!
1798                         if ($ref->{priv}) {             # you have to have SOME privilege, the commands have further filtering
1799                                 $self->{remotecmd} = 1; # for the benefit of any command that needs to know
1800                                 my $oldpriv = $self->{priv};
1801                                 $self->{priv} = $ref->{priv}; # assume the user's privilege level
1802                                 my @in = (DXCommandmode::run_cmd($self, $cmd));
1803                                 $self->{priv} = $oldpriv;
1804                                 $self->send_rcmd_reply($main::mycall, $fromnode, $user, @in);
1805                                 delete $self->{remotecmd};
1806                         } else {
1807                                 $self->send_rcmd_reply($main::mycall, $fromnode, $user, "sorry...!");
1808                         }
1809                 } else {
1810                         $self->send_rcmd_reply($main::mycall, $fromnode, $user, "your attempt is logged, Tut tut tut...!");
1811                 }
1812         } else {
1813                 my $ref = DXUser->get_current($tonode);
1814                 if ($ref && $ref->is_clx) {
1815                         $self->route($tonode, pc84($fromnode, $tonode, $user, $cmd));
1816                 } else {
1817                         $self->route($tonode, pc34($fromnode, $tonode, $cmd));
1818                 }
1819         }
1820 }
1821
1822 sub process_rcmd_reply
1823 {
1824         my ($self, $tonode, $fromnode, $user, $line) = @_;
1825         if ($tonode eq $main::mycall) {
1826                 my $s = $rcmds{$fromnode};
1827                 if ($s) {
1828                         my $dxchan = DXChannel->get($s->{call});
1829                         my $ref = $user eq $tonode ? $dxchan : (DXChannel->get($user) || $dxchan);
1830                         $ref->send($line) if $ref;
1831                         delete $rcmds{$fromnode} if !$dxchan;
1832                 } else {
1833                         # send unsolicited ones to the sysop
1834                         my $dxchan = DXChannel->get($main::myalias);
1835                         $dxchan->send($line) if $dxchan;
1836                 }
1837         } else {
1838                 my $ref = DXUser->get_current($tonode);
1839                 if ($ref && $ref->is_clx) {
1840                         $self->route($tonode, pc85($fromnode, $tonode, $user, $line));
1841                 } else {
1842                         $self->route($tonode, pc35($fromnode, $tonode, $line));
1843                 }
1844         }
1845 }
1846
1847 sub send_rcmd_reply
1848 {
1849         my $self = shift;
1850         my $tonode = shift;
1851         my $fromnode = shift;
1852         my $user = shift;
1853         while (@_) {
1854                 my $line = shift;
1855                 $line =~ s/\s*$//;
1856                 Log('rcmd', 'out', $fromnode, $line);
1857                 if ($self->is_clx) {
1858                         $self->send(pc85($main::mycall, $fromnode, $user, "$main::mycall:$line"));
1859                 } else {
1860                         $self->send(pc35($main::mycall, $fromnode, "$main::mycall:$line"));
1861                 }
1862         }
1863 }
1864
1865 # add a rcmd request to the rcmd queues
1866 sub addrcmd
1867 {
1868         my ($self, $to, $cmd) = @_;
1869
1870         my $r = {};
1871         $r->{call} = $self->{call};
1872         $r->{t} = $main::systime;
1873         $r->{cmd} = $cmd;
1874         $rcmds{$to} = $r;
1875
1876         my $ref = Route::Node::get($to);
1877         my $dxchan = $ref->dxchan;
1878         if ($dxchan && $dxchan->is_clx) {
1879                 route(undef, $to, pc84($main::mycall, $to, $self->{call}, $cmd));
1880         } else {
1881                 route(undef, $to, pc34($main::mycall, $to, $cmd));
1882         }
1883 }
1884
1885 sub disconnect
1886 {
1887         my $self = shift;
1888         my $pc39flag = shift;
1889         my $call = $self->call;
1890
1891         return if $self->{disconnecting}++;
1892
1893         unless ($pc39flag && $pc39flag == 1) {
1894                 $self->send_now("D", DXProt::pc39($main::mycall, $self->msg('disc1', "System Op")));
1895         }
1896
1897         # get rid of any PC16/17/19
1898         eph_del_regex("^PC1[679]*$call");
1899
1900         # do routing stuff, remove me from routing table
1901         my $node = Route::Node::get($call);
1902         my @rout;
1903         if ($node) {
1904                 @rout = $node->del($main::routeroot);
1905
1906                 # and all my ephemera as well
1907                 for (@rout) {
1908                         my $c = $_->call;
1909                         eph_del_regex("^PC1[679].*$c");
1910                 }
1911         }
1912
1913         # remove them from the pc19list as well
1914         while (my ($k,$v) = each %pc19list) {
1915                 my @l = grep {$_->[0] ne $call} @{$pc19list{$k}};
1916                 if (@l) {
1917                         $pc19list{$k} = \@l;
1918                 } else {
1919                         delete $pc19list{$k};
1920                 }
1921
1922                 # and the ephemera
1923                 eph_del_regex("^PC1[679].*$k");
1924         }
1925
1926         # unbusy and stop and outgoing mail
1927         my $mref = DXMsg::get_busy($call);
1928         $mref->stop_msg($call) if $mref;
1929
1930         # broadcast to all other nodes that all the nodes connected to via me are gone
1931         unless ($pc39flag && $pc39flag == 2) {
1932                 $self->route_pc21(@rout) if @rout;
1933         }
1934
1935         # remove outstanding pings
1936         delete $pings{$call};
1937
1938         # I was the last node visited
1939     $self->user->node($main::mycall);
1940
1941         # send info to all logged in thingies
1942         $self->tell_login('logoutn');
1943
1944         Log('DXProt', $call . " Disconnected");
1945
1946         $self->SUPER::disconnect;
1947 }
1948
1949
1950 #
1951 # send a talk message to this thingy
1952 #
1953 sub talk
1954 {
1955         my ($self, $from, $to, $via, $line, $origin) = @_;
1956
1957         $line =~ s/\^/\\5E/g;                   # remove any ^ characters
1958         $self->send(DXProt::pc10($from, $to, $via, $line, $origin));
1959         Log('talk', $to, $from, $via?$via:$self->call, $line) unless $origin && $origin ne $main::mycall;
1960 }
1961
1962 # send it if it isn't the except list and isn't isolated and still has a hop count
1963 # taking into account filtering and so on
1964 sub send_route
1965 {
1966         my $self = shift;
1967         my $generate = shift;
1968         my $no = shift;     # the no of things to filter on
1969         my $routeit;
1970         my ($filter, $hops);
1971         my @rin;
1972
1973         for (; @_ && $no; $no--) {
1974                 my $r = shift;
1975
1976                 if (!$self->{isolate} && $self->{routefilter}) {
1977                         $filter = undef;
1978                         if ($r) {
1979                                 ($filter, $hops) = $self->{routefilter}->it($self->{call}, $self->{dxcc}, $self->{itu}, $self->{cq}, $r->call, $r->dxcc, $r->itu, $r->cq, $self->{state}, $r->{state});
1980                                 if ($filter) {
1981                                         push @rin, $r;
1982                                 } else {
1983                                         dbg("DXPROT: $self->{call}/" . $r->call . " rejected by output filter") if isdbg('chanerr');
1984                                 }
1985                         } else {
1986                                 dbg("was sent a null value") if isdbg('chanerr');
1987                         }
1988                 } else {
1989                         push @rin, $r unless $self->{isolate} && $r->call ne $main::mycall;
1990                 }
1991         }
1992         if (@rin) {
1993                 foreach my $line (&$generate(@rin, @_)) {
1994                         if ($hops) {
1995                                 $routeit = $line;
1996                                 $routeit =~ s/\^H\d+\^\~$/\^H$hops\^\~/;
1997                         } else {
1998                                 $routeit = adjust_hops($self, $line);  # adjust its hop count by node name
1999                                 next unless $routeit;
2000                         }
2001                         $self->send($routeit);
2002                 }
2003         }
2004 }
2005
2006 sub broadcast_route
2007 {
2008         my $self = shift;
2009         my $generate = shift;
2010         my @dxchan = DXChannel::get_all_nodes();
2011         my $dxchan;
2012         my $line;
2013
2014         unless ($self->{isolate}) {
2015                 foreach $dxchan (@dxchan) {
2016                         next if $dxchan == $self;
2017                         next if $dxchan == $main::me;
2018                         next if $dxchan->user->wantnp;
2019                         next if ($generate == \&pc16 || $generate==\&pc17) && !$dxchan->user->wantsendpc16;
2020
2021                         $dxchan->send_route($generate, @_);
2022                 }
2023         }
2024 }
2025
2026 sub route_pc16
2027 {
2028         my $self = shift;
2029         return unless $self->user->wantpc16;
2030         broadcast_route($self, \&pc16, 1, @_);
2031 }
2032
2033 sub route_pc17
2034 {
2035         my $self = shift;
2036         return unless $self->user->wantpc16;
2037         broadcast_route($self, \&pc17, 1, @_);
2038 }
2039
2040 sub route_pc19
2041 {
2042         my $self = shift;
2043         broadcast_route($self, \&pc19, scalar @_, @_);
2044 }
2045
2046 sub route_pc21
2047 {
2048         my $self = shift;
2049         broadcast_route($self, \&pc21, scalar @_, @_);
2050 }
2051
2052 sub route_pc24
2053 {
2054         my $self = shift;
2055         broadcast_route($self, \&pc24, 1, @_);
2056 }
2057
2058 sub route_pc41
2059 {
2060         my $self = shift;
2061         broadcast_route($self, \&pc41, 1, @_);
2062 }
2063
2064 sub route_pc50
2065 {
2066         my $self = shift;
2067         broadcast_route($self, \&pc50, 1, @_);
2068 }
2069
2070 sub route_pc90
2071 {
2072         my $self = shift;
2073         broadcast_route($self, \&pc90, 1, @_);
2074 }
2075
2076 sub in_filter_route
2077 {
2078         my $self = shift;
2079         my $r = shift;
2080         my ($filter, $hops) = (1, 1);
2081
2082         if ($self->{inroutefilter}) {
2083                 ($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);
2084                 dbg("PCPROT: $self->{call}/" . $r->call . ' rejected by in_filter_route') if !$filter && isdbg('chanerr');
2085         }
2086         return $filter;
2087 }
2088
2089 sub eph_dup
2090 {
2091         my $s = shift;
2092         my $t = shift || $eph_restime;
2093         my $r;
2094
2095         # chop the end off
2096         $s =~ s/\^H\d\d?\^?\~?$//;
2097         $r = 1 if exists $eph{$s};    # pump up the dup if it keeps circulating
2098         $eph{$s} = $main::systime + $t;
2099         return $r;
2100 }
2101
2102 sub eph_del_regex
2103 {
2104         my $regex = shift;
2105         my ($key, $val);
2106         while (($key, $val) = each %eph) {
2107                 if ($key =~ m{$regex}) {
2108                         delete $eph{$key};
2109                 }
2110         }
2111 }
2112
2113 sub eph_clean
2114 {
2115         my ($key, $val);
2116
2117         while (($key, $val) = each %eph) {
2118                 if ($main::systime >= $val) {
2119                         delete $eph{$key};
2120                 }
2121         }
2122 }
2123
2124 sub eph_list
2125 {
2126         my ($key, $val);
2127         my @out;
2128
2129         while (($key, $val) = each %eph) {
2130                 push @out, $key, $val;
2131         }
2132         return @out;
2133 }
2134
2135 sub run_cmd
2136 {
2137         goto &DXCommandmode::run_cmd;
2138 }
2139 1;
2140 __END__