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 ($parent) {
 648                                 if (my ($nl = $pc19list{$ncall}) && @field > 2) {
 649
 650                                         # this is a new (remembered) node, now attach it to me if it isn't in filtered
 651                                         # and we haven't disallowed it
 652                                         my $user = DXUser->get_current($ncall);
 653                                         if (!$user) {
 654                                                 $user = DXUser->new($ncall);
 655                                                 $user->sort('A');
 656                                                 $user->priv(1);                   # I have relented and defaulted nodes
 657                                                 $user->lockout(1);
 658                                                 $user->homenode($ncall);
 659                                                 $user->node($ncall);
 660                                         }
 661
 662                                         delete $pc19list{$ncall};             # whatever happens - it goes
 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                                         }
 692                                 } else {
 693                                         dbg("PCPROT: Node $ncall not in config") if isdbg('chanerr');
 694                                         return;
 695                                 }
 696                         } else {
 697
 698                                 $dxchan = $parent->dxchan;
 699                                 if ($dxchan && $dxchan ne $self) {
 700                                         dbg("PCPROT: PC16 from $self->{call} trying to alter locally connected $ncall, ignored!") if isdbg('chanerr');
 701                                         return;
 702                                 }
 703
 704                                 # input filter if required
 705                                 return unless $self->in_filter_route($parent);
 706                         }
 707
 708                         my $i;
 709                         my @rout;
 710                         for ($i = 2; $i < $#field; $i++) {
 711                                 my ($call, $conf, $here) = $field[$i] =~ /^(\S+) (\S) (\d)/o;
 712                                 next unless $call && $conf && defined $here && is_callsign($call);
 713                                 next if $call eq $main::mycall;
 714
 715                                 eph_del_regex("^PC17\\^$call\\^$ncall");
 716
 717                                 $conf = $conf eq '*';
 718
 719                                 # reject this if we think it is a node already
 720                                 my $r = Route::Node::get($call);
 721                                 my $u = DXUser->get_current($call) unless $r;
 722                                 if ($r || ($u && $u->is_node)) {
 723                                         dbg("PCPROT: $call is a node") if isdbg('chanerr');
 724                                         next;
 725                                 }
 726
 727                                 $r = Route::User::get($call);
 728                                 my $flags = Route::here($here)|Route::conf($conf);
 729
 730                                 if ($r) {
 731                                         if ($r->flags != $flags) {
 732                                                 $r->flags($flags);
 733                                                 push @rout, $r;
 734                                         }
 735                                         $r->addparent($parent);
 736                                 } else {
 737                                         push @rout, $parent->add_user($call, $flags);
 738                                 }
 739
 740
 741                                 # add this station to the user database, if required
 742                                 $call =~ s/-\d+$//o;        # remove ssid for users
 743                                 my $user = DXUser->get_current($call);
 744                                 $user = DXUser->new($call) if !$user;
 745                                 $user->homenode($parent->call) if !$user->homenode;
 746                                 $user->node($parent->call);
 747                                 $user->lastin($main::systime) unless DXChannel->get($call);
 748                                 $user->put;
 749                         }
 750
 751                         # queue up any messages (look for privates only)
 752                         DXMsg::queue_msg(1) if $self->state eq 'normal';
 753
 754                         $self->route_pc16($parent, @rout) if @rout;
 755                         return;
 756                 }
 757
 758                 if ($pcno == 17) {              # remove a user
 759                         my $dxchan;
 760                         my $ncall = $field[2];
 761                         my $ucall = $field[1];
 762
 763                         eph_del_regex("^PC16\\^$ncall.*$ucall");
 764
 765                         # do I want users from this channel?
 766                         unless ($self->user->wantpc16) {
 767                                 dbg("PCPROT: don't send users to $self->{call}") if isdbg('chanerr');
 768                                 return;
 769                         }
 770                         if ($ncall eq $main::mycall) {
 771                                 dbg("PCPROT: trying to alter config on this node from outside!") if isdbg('chanerr');
 772                                 return;
 773                         }
 774
 775                         my $uref = Route::User::get($ucall);
 776                         unless ($uref) {
 777                                 dbg("PCPROT: Route::User $ucall not in config") if isdbg('chanerr');
 778                                 return;
 779                         }
 780                         my $parent = Route::Node::get($ncall);
 781                         unless ($parent) {
 782                                 dbg("PCPROT: Route::Node $ncall not in config") if isdbg('chanerr');
 783                                 return;
 784                         }
 785
 786                         $dxchan = $parent->dxchan;
 787                         if ($dxchan && $dxchan ne $self) {
 788                                 dbg("PCPROT: PC17 from $self->{call} trying to alter locally connected $ncall, ignored!") if isdbg('chanerr');
 789                                 return;
 790                         }
 791
 792                         # input filter if required
 793                         return unless $self->in_filter_route($parent);
 794
 795                         $parent->del_user($uref);
 796
 797                         if (eph_dup($line)) {
 798                                 dbg("PCPROT: dup PC17 detected") if isdbg('chanerr');
 799                                 return;
 800                         }
 801
 802                         $self->route_pc17($parent, $uref);
 803                         return;
 804                 }
 805
 806                 if ($pcno == 18) {              # link request
 807                         $self->state('init');
 808
 809                         # record the type and version offered
 810                         if ($field[1] =~ /DXSpider Version: (\d+\.\d+) Build: (\d+\.\d+)/) {
 811                                 $self->version(53 + $1);
 812                                 $self->user->version(53 + $1);
 813                                 $self->build(0 + $2);
 814                                 $self->user->build(0 + $2);
 815                                 unless ($self->is_spider) {
 816                                         $self->user->sort('S');
 817                                         $self->user->put;
 818                                         $self->sort('S');
 819                                 }
 820                         } else {
 821                                 $self->version(50.0);
 822                                 $self->version($field[2] / 100) if $field[2] && $field[2] =~ /^\d+$/;
 823                                 $self->user->version($self->version);
 824                         }
 825
 826                         # first clear out any nodes on this dxchannel
 827                         my $parent = Route::Node::get($self->{call});
 828                         my @rout = $parent->del_nodes;
 829                         $self->route_pc21(@rout, $parent) if @rout;
 830                         $self->send_local_config();
 831                         $self->send(pc20());
 832                         return;             # we don't pass these on
 833                 }
 834
 835                 if ($pcno == 19) {              # incoming cluster list
 836                         my $i;
 837                         my $newline = "PC19^";
 838
 839                         if (eph_dup($line)) {
 840                                 dbg("PCPROT: dup PC19 detected") if isdbg('chanerr');
 841                                 return;
 842                         }
 843
 844                         # new routing list
 845                         my @rout;
 846                         my $parent = Route::Node::get($self->{call});
 847                         unless ($parent) {
 848                                 dbg("DXPROT: my parent $self->{call} has disappeared");
 849                                 $self->disconnect;
 850                                 return;
 851                         }
 852
 853                         # parse the PC19
 854                         for ($i = 1; $i < $#field-1; $i += 4) {
 855                                 my $here = $field[$i];
 856                                 my $call = uc $field[$i+1];
 857                                 my $conf = $field[$i+2];
 858                                 my $ver = $field[$i+3];
 859                                 next unless defined $here && defined $conf && is_callsign($call);
 860
 861                                 eph_del_regex("^PC(?:21\\^$call|17\\^[^\\^]+\\^$call)");
 862
 863                                 # check for sane parameters
 864 #                               $ver = 5000 if $ver eq '0000';
 865                                 next if $ver < 5000; # only works with version 5 software
 866                                 next if length $call < 3; # min 3 letter callsigns
 867                                 next if $call eq $main::mycall;
 868
 869                                 # check that this PC19 isn't trying to alter the wrong dxchan
 870                                 my $dxchan = DXChannel->get($call);
 871                                 if ($dxchan && $dxchan != $self) {
 872                                         dbg("PCPROT: PC19 from $self->{call} trying to alter wrong locally connected $call, ignored!") if isdbg('chanerr');
 873                                         next;
 874                                 }
 875
 876                                 # add this station to the user database, if required (don't remove SSID from nodes)
 877                                 my $user = DXUser->get_current($call);
 878                                 if (!$user) {
 879                                         $user = DXUser->new($call);
 880                                         $user->sort('A');
 881                                         $user->priv(1);                   # I have relented and defaulted nodes
 882                                         $user->lockout(1);
 883                                         $user->homenode($call);
 884                                         $user->node($call);
 885                                 }
 886
 887                                 my $r = Route::Node::get($call);
 888                                 my $flags = Route::here($here)|Route::conf($conf);
 889
 890                                 # modify the routing table if it is in it, otherwise store it in the pc19list for now
 891                                 if ($r) {
 892                                         my $ar;
 893                                         if ($call ne $parent->call) {
 894                                                 if ($self->in_filter_route($r)) {
 895                                                         $ar = $parent->add($call, $ver, $flags);
 896                                                         push @rout, $ar if $ar;
 897                                                 } else {
 898                                                         next;
 899                                                 }
 900                                         }
 901                                         if ($r->version ne $ver || $r->flags != $flags) {
 902                                                 $r->version($ver);
 903                                                 $r->flags($flags);
 904                                                 push @rout, $r unless $ar;
 905                                         }
 906                                 } else {
 907
 908                                         # if he is directly connected or allowed then add him, otherwise store him up for later
 909                                         if ($call eq $self->{call} || $user->wantroutepc19) {
 910                                                 my $new = Route->new($call);          # throw away
 911                                                 if ($self->in_filter_route($new)) {
 912                                                         my $ar = $parent->add($call, $ver, $flags);
 913                                                         push @rout, $ar if $ar;
 914                                                 } else {
 915                                                         next;
 916                                                 }
 917                                         } else {
 918                                                 $pc19list{$call} = [] unless exists $pc19list{$call};
 919                                                 my $nl = $pc19list{$call};
 920                                                 push @{$pc19list{$call}}, [$self->{call}, $ver, $flags] unless grep $_->[0] eq $self->{call}, @$nl;
 921                                         }
 922                                 }
 923
 924                                 # unbusy and stop and outgoing mail (ie if somehow we receive another PC19 without a disconnect)
 925                                 my $mref = DXMsg::get_busy($call);
 926                                 $mref->stop_msg($call) if $mref;
 927
 928                                 $user->lastin($main::systime) unless DXChannel->get($call);
 929                                 $user->put;
 930                         }
 931
 932
 933                         $self->route_pc19(@rout) if @rout;
 934                         return;
 935                 }
 936
 937                 if ($pcno == 20) {              # send local configuration
 938                         $self->send_local_config();
 939                         $self->send(pc22());
 940                         $self->state('normal');
 941                         $self->{lastping} = 0;
 942                         return;
 943                 }
 944
 945                 if ($pcno == 21) {              # delete a cluster from the list
 946                         my $call = uc $field[1];
 947
 948                         eph_del_regex("^PC1[679].*$call");
 949
 950                         # if I get a PC21 from the same callsign as self then treat it
 951                         # as a PC39: I have gone away
 952                         if ($call eq $self->call) {
 953                                 $self->disconnect(1);
 954                                 return;
 955                         }
 956
 957                         # check to see if we are in the pc19list, if we are then don't bother with any of
 958                         # this routing table manipulation, just remove it from the list and dump it
 959                         my @rout;
 960                         if (my $nl = $pc19list{$call}) {
 961                                 $pc19list{$call} = [ grep {$_->[0] ne $self->{call}} @$nl ];
 962                                 delete $pc19list{$call} unless @{$pc19list{$call}};
 963                         } else {
 964
 965                                 my $parent = Route::Node::get($self->{call});
 966                                 unless ($parent) {
 967                                         dbg("DXPROT: my parent $self->{call} has disappeared");
 968                                         $self->disconnect;
 969                                         return;
 970                                 }
 971                                 if ($call ne $main::mycall) { # don't allow malicious buggers to disconnect me!
 972                                         my $node = Route::Node::get($call);
 973                                         if ($node) {
 974
 975                                                 my $dxchan = DXChannel->get($call);
 976                                                 if ($dxchan && $dxchan != $self) {
 977                                                         dbg("PCPROT: PC21 from $self->{call} trying to alter locally connected $call, ignored!") if isdbg('chanerr');
 978                                                         return;
 979                                                 }
 980
 981                                                 # input filter it
 982                                                 return unless $self->in_filter_route($node);
 983
 984                                                 # routing objects
 985                                                 push @rout, $node->del($parent);
 986                                         }
 987                                 } else {
 988                                         dbg("PCPROT: I WILL _NOT_ be disconnected!") if isdbg('chanerr');
 989                                         return;
 990                                 }
 991                         }
 992
 993                         $self->route_pc21(@rout) if @rout;
 994                         return;
 995                 }
 996
 997                 if ($pcno == 22) {
 998                         $self->state('normal');
 999                         $self->{lastping} = 0;
1000                         return;
1001                 }
1002
1003                 if ($pcno == 23 || $pcno == 27) { # WWV info
1004
1005                         # route 'foreign' pc27s
1006                         if ($pcno == 27) {
1007                                 if ($field[8] ne $main::mycall) {
1008                                         $self->route($field[8], $line);
1009                                         return;
1010                                 }
1011                         }
1012
1013                         return if $rspfcheck and !$self->rspfcheck(1, $field[8], $field[7]);
1014
1015                         # do some de-duping
1016                         my $d = cltounix($field[1], sprintf("%02d18Z", $field[2]));
1017                         my $sfi = unpad($field[3]);
1018                         my $k = unpad($field[4]);
1019                         my $i = unpad($field[5]);
1020                         my ($r) = $field[6] =~ /R=(\d+)/;
1021                         $r = 0 unless $r;
1022                         if (($pcno == 23 && $d < $main::systime - $pc23_max_age) || $d > $main::systime + 1500 || $field[2] < 0 || $field[2] > 23) {
1023                                 dbg("PCPROT: WWV Date ($field[1] $field[2]) out of range") if isdbg('chanerr');
1024                                 return;
1025                         }
1026                         if (Geomag::dup($d,$sfi,$k,$i,$field[6])) {
1027                                 dbg("PCPROT: Dup WWV Spot ignored\n") if isdbg('chanerr');
1028                                 return;
1029                         }
1030                         $field[7] =~ s/-\d+$//o;            # remove spotter's ssid
1031
1032                         my $wwv = Geomag::update($d, $field[2], $sfi, $k, $i, @field[6..8], $r);
1033
1034                         my $rep;
1035                         eval {
1036                                 $rep = Local::wwv($self, $field[1], $field[2], $sfi, $k, $i, @field[6..8], $r);
1037                         };
1038 #                       dbg("Local::wwv2 error $@") if isdbg('local') if $@;
1039                         return if $rep;
1040
1041                         # DON'T be silly and send on PC27s!
1042                         return if $pcno == 27;
1043
1044                         # broadcast to the eager world
1045                         send_wwv_spot($self, $line, $d, $field[2], $sfi, $k, $i, @field[6..8]);
1046                         return;
1047                 }
1048
1049                 if ($pcno == 24) {              # set here status
1050                         my $call = uc $field[1];
1051                         my ($nref, $uref);
1052                         $nref = Route::Node::get($call);
1053                         $uref = Route::User::get($call);
1054                         return unless $nref || $uref;   # if we don't know where they are, it's pointless sending it on
1055
1056                         unless (eph_dup($line)) {
1057                                 $nref->here($field[2]) if $nref;
1058                                 $uref->here($field[2]) if $uref;
1059                                 my $ref = $nref || $uref;
1060                                 return unless $self->in_filter_route($ref);
1061                                 $self->route_pc24($ref, $field[3]);
1062                         }
1063                         return;
1064                 }
1065
1066                 if ($pcno == 25) {      # merge request
1067                         if ($field[1] ne $main::mycall) {
1068                                 $self->route($field[1], $line);
1069                                 return;
1070                         }
1071                         if ($field[2] eq $main::mycall) {
1072                                 dbg("PCPROT: Trying to merge to myself, ignored") if isdbg('chanerr');
1073                                 return;
1074                         }
1075
1076                         Log('DXProt', "Merge request for $field[3] spots and $field[4] WWV from $field[2]");
1077
1078                         # spots
1079                         if ($field[3] > 0) {
1080                                 my @in = reverse Spot::search(1, undef, undef, 0, $field[3]);
1081                                 my $in;
1082                                 foreach $in (@in) {
1083                                         $self->send(pc26(@{$in}[0..4], $field[2]));
1084                                 }
1085                         }
1086
1087                         # wwv
1088                         if ($field[4] > 0) {
1089                                 my @in = reverse Geomag::search(0, $field[4], time, 1);
1090                                 my $in;
1091                                 foreach $in (@in) {
1092                                         $self->send(pc27(@{$in}[0..5], $field[2]));
1093                                 }
1094                         }
1095                         return;
1096                 }
1097
1098                 if (($pcno >= 28 && $pcno <= 33) || $pcno == 40 || $pcno == 42 || $pcno == 49) { # mail/file handling
1099                         return if $pcno == 49 && eph_dup($line);
1100                         if ($pcno == 49 || $field[1] eq $main::mycall) {
1101                                 DXMsg::process($self, $line);
1102                         } else {
1103                                 $self->route($field[1], $line) unless $self->is_clx;
1104                         }
1105                         return;
1106                 }
1107
1108                 if ($pcno == 34 || $pcno == 36) { # remote commands (incoming)
1109                         if (eph_dup($line, $eph_pc34_restime)) {
1110                                 dbg("PCPROT: dupe") if isdbg('chanerr');
1111                         } else {
1112                                 $self->process_rcmd($field[1], $field[2], $field[2], $field[3]);
1113                         }
1114                         return;
1115                 }
1116
1117                 if ($pcno == 35) {              # remote command replies
1118                         eph_del_regex("^PC35\\^$field[2]\\^$field[1]\\^");
1119                         $self->process_rcmd_reply($field[1], $field[2], $field[1], $field[3]);
1120                         return;
1121                 }
1122
1123                 # for pc 37 see 44 onwards
1124
1125                 if ($pcno == 38) {              # node connected list from neighbour
1126                         return;
1127                 }
1128
1129                 if ($pcno == 39) {              # incoming disconnect
1130                         if ($field[1] eq $self->{call}) {
1131                                 $self->disconnect(1);
1132                         } else {
1133                                 dbg("PCPROT: came in on wrong channel") if isdbg('chanerr');
1134                         }
1135                         return;
1136                 }
1137
1138                 if ($pcno == 41) {              # user info
1139                         my $call = $field[1];
1140
1141                         if (eph_dup($line, $eph_info_restime)) {
1142                                 dbg("PCPROT: dupe") if isdbg('chanerr');
1143                                 return;
1144                         }
1145
1146                         # input filter if required
1147 #                       my $ref = Route::get($call) || Route->new($call);
1148 #                       return unless $self->in_filter_route($ref);
1149
1150                         if ($field[3] eq $field[2] || $field[3] =~ /^\s*$/) {
1151                                 dbg('PCPROT: invalid value') if isdbg('chanerr');
1152                                 return;
1153                         }
1154
1155                         # add this station to the user database, if required
1156                         my $user = DXUser->get_current($call);
1157                         $user = DXUser->new($call) unless $user;
1158
1159                         if ($field[2] == 1) {
1160                                 $user->name($field[3]);
1161                         } elsif ($field[2] == 2) {
1162                                 $user->qth($field[3]);
1163                         } elsif ($field[2] == 3) {
1164                                 if (is_latlong($field[3])) {
1165                                         my ($lat, $long) = DXBearing::stoll($field[3]);
1166                                         $user->lat($lat);
1167                                         $user->long($long);
1168                                         $user->qra(DXBearing::lltoqra($lat, $long));
1169                                 } else {
1170                                         dbg('PCPROT: not a valid lat/long') if isdbg('chanerr');
1171                                         return;
1172                                 }
1173                         } elsif ($field[2] == 4) {
1174                                 $user->homenode($field[3]);
1175                         } elsif ($field[2] == 5) {
1176                                 if (is_qra(uc $field[3])) {
1177                                         my ($lat, $long) = DXBearing::qratoll(uc $field[3]);
1178                                         $user->lat($lat);
1179                                         $user->long($long);
1180                                         $user->qra(uc $field[3]);
1181                                 } else {
1182                                         dbg('PCPROT: not a valid QRA locator') if isdbg('chanerr');
1183                                         return;
1184                                 }
1185                         }
1186                         $user->lastoper($main::systime);   # to cut down on excessive for/opers being generated
1187                         $user->put;
1188
1189                         unless ($self->{isolate}) {
1190                                 DXChannel::broadcast_nodes($line, $self); # send it to everyone but me
1191                         }
1192
1193 #  perhaps this IS what we want after all
1194 #                       $self->route_pc41($ref, $call, $field[2], $field[3], $field[4]);
1195                         return;
1196                 }
1197
1198                 if ($pcno == 43) {
1199                         last SWITCH;
1200                 }
1201
1202                 if ($pcno == 37 || $pcno == 44 || $pcno == 45 || $pcno == 46 || $pcno == 47 || $pcno == 48) {
1203                         DXDb::process($self, $line);
1204                         return;
1205                 }
1206
1207                 if ($pcno == 50) {              # keep alive/user list
1208                         my $call = $field[1];
1209                         my $node = Route::Node::get($call);
1210                         if ($node) {
1211                                 return unless $node->call eq $self->{call};
1212                                 $node->usercount($field[2]);
1213
1214                                 # input filter if required
1215                                 return unless $self->in_filter_route($node);
1216
1217                                 $self->route_pc50($node, $field[2], $field[3]) unless eph_dup($line);
1218                         }
1219                         return;
1220                 }
1221
1222                 if ($pcno == 51) {              # incoming ping requests/answers
1223                         my $to = $field[1];
1224                         my $from = $field[2];
1225                         my $flag = $field[3];
1226
1227
1228                         # is it for us?
1229                         if ($to eq $main::mycall) {
1230                                 if ($flag == 1) {
1231                                         $self->send(pc51($from, $to, '0'));
1232                                 } else {
1233                                         # it's a reply, look in the ping list for this one
1234                                         my $ref = $pings{$from};
1235                                         if ($ref) {
1236                                                 my $tochan =  DXChannel->get($from);
1237                                                 while (@$ref) {
1238                                                         my $r = shift @$ref;
1239                                                         my $dxchan = DXChannel->get($r->{call});
1240                                                         next unless $dxchan;
1241                                                         my $t = tv_interval($r->{t}, [ gettimeofday ]);
1242                                                         if ($dxchan->is_user) {
1243                                                                 my $s = sprintf "%.2f", $t;
1244                                                                 my $ave = sprintf "%.2f", $tochan ? ($tochan->{pingave} || $t) : $t;
1245                                                                 $dxchan->send($dxchan->msg('pingi', $from, $s, $ave))
1246                                                         } elsif ($dxchan->is_node) {
1247                                                                 if ($tochan) {
1248                                                                         my $nopings = $tochan->user->nopings || 2;
1249                                                                         push @{$tochan->{pingtime}}, $t;
1250                                                                         shift @{$tochan->{pingtime}} if @{$tochan->{pingtime}} > 6;
1251
1252                                                                         # cope with a missed ping, this means you must set the pingint large enough
1253                                                                         if ($t > $tochan->{pingint}  && $t < 2 * $tochan->{pingint} ) {
1254                                                                                 $t -= $tochan->{pingint};
1255                                                                         }
1256
1257                                                                         # calc smoothed RTT a la TCP
1258                                                                         if (@{$tochan->{pingtime}} == 1) {
1259                                                                                 $tochan->{pingave} = $t;
1260                                                                         } else {
1261                                                                                 $tochan->{pingave} = $tochan->{pingave} + (($t - $tochan->{pingave}) / 6);
1262                                                                         }
1263                                                                         $tochan->{nopings} = $nopings; # pump up the timer
1264                                                                 }
1265                                                         }
1266                                                 }
1267                                         }
1268                                 }
1269                         } else {
1270                                 if (eph_dup($line)) {
1271                                         dbg("PCPROT: dup PC51 detected") if isdbg('chanerr');
1272                                         return;
1273                                 }
1274                                 # route down an appropriate thingy
1275                                 $self->route($to, $line);
1276                         }
1277                         return;
1278                 }
1279
1280                 if ($pcno == 75) {              # dunno but route it
1281                         my $call = $field[1];
1282                         if ($call ne $main::mycall) {
1283                                 $self->route($call, $line);
1284                         }
1285                         return;
1286                 }
1287
1288                 if ($pcno == 73) {  # WCY broadcasts
1289                         my $call = $field[1];
1290
1291                         # do some de-duping
1292                         my $d = cltounix($call, sprintf("%02d18Z", $field[2]));
1293                         if (($pcno == 23 && $d < $main::systime - $pc23_max_age) || $d > $main::systime + 1500 || $field[2] < 0 || $field[2] > 23) {
1294                                 dbg("PCPROT: WCY Date ($call $field[2]) out of range") if isdbg('chanerr');
1295                                 return;
1296                         }
1297                         @field = map { unpad($_) } @field;
1298                         if (WCY::dup($d)) {
1299                                 dbg("PCPROT: Dup WCY Spot ignored\n") if isdbg('chanerr');
1300                                 return;
1301                         }
1302
1303                         my $wcy = WCY::update($d, @field[2..12]);
1304
1305                         my $rep;
1306                         eval {
1307                                 $rep = Local::wcy($self, @field[1..12]);
1308                         };
1309                         # dbg("Local::wcy error $@") if isdbg('local') if $@;
1310                         return if $rep;
1311
1312                         # broadcast to the eager world
1313                         send_wcy_spot($self, $line, $d, @field[2..12]);
1314                         return;
1315                 }
1316
1317                 if ($pcno == 84) { # remote commands (incoming)
1318                         $self->process_rcmd($field[1], $field[2], $field[3], $field[4]);
1319                         return;
1320                 }
1321
1322                 if ($pcno == 85) {              # remote command replies
1323                         $self->process_rcmd_reply($field[1], $field[2], $field[3], $field[4]);
1324
1325                         return;
1326                 }
1327                 if ($pcno == 90) {              # new style PC16,17,19,21
1328                         return;
1329                 }
1330         }
1331
1332         # if get here then rebroadcast the thing with its Hop count decremented (if
1333         # there is one). If it has a hop count and it decrements to zero then don't
1334         # rebroadcast it.
1335         #
1336         # NOTE - don't arrive here UNLESS YOU WANT this lump of protocol to be
1337         #        REBROADCAST!!!!
1338         #
1339
1340         if (eph_dup($line)) {
1341                 dbg("PCPROT: Ephemeral dup, dropped") if isdbg('chanerr');
1342         } else {
1343                 unless ($self->{isolate}) {
1344                         DXChannel::broadcast_nodes($line, $self); # send it to everyone but me
1345                 }
1346         }
1347 }
1348
1349 #
1350 # This is called from inside the main cluster processing loop and is used
1351 # for despatching commands that are doing some long processing job
1352 #
1353 sub process
1354 {
1355         my $t = time;
1356         my @dxchan = DXChannel->get_all();
1357         my $dxchan;
1358         my $pc50s;
1359
1360         # send out a pc50 on EVERY channel all at once
1361         if ($t >= $last_pc50 + $DXProt::pc50_interval) {
1362                 $pc50s = pc50($main::me, scalar DXChannel::get_all_users);
1363                 eph_dup($pc50s);
1364                 $last_pc50 = $t;
1365         }
1366
1367         foreach $dxchan (@dxchan) {
1368                 next unless $dxchan->is_node();
1369                 next if $dxchan == $main::me;
1370
1371                 # send the pc50 or PC90
1372                 $dxchan->send($pc50s) if $pc50s;
1373
1374                 # send a ping out on this channel
1375                 if ($dxchan->{pingint} && $t >= $dxchan->{pingint} + $dxchan->{lastping}) {
1376                         if ($dxchan->{nopings} <= 0) {
1377                                 $dxchan->disconnect;
1378                         } else {
1379                                 addping($main::mycall, $dxchan->call);
1380                                 $dxchan->{nopings} -= 1;
1381                                 $dxchan->{lastping} = $t;
1382                         }
1383                 }
1384         }
1385
1386         # every ten seconds
1387         if ($t - $last10 >= 10) {
1388                 # clean out ephemera
1389
1390                 eph_clean();
1391
1392                 $last10 = $t;
1393         }
1394
1395         if ($main::systime - 3600 > $last_hour) {
1396                 $last_hour = $main::systime;
1397         }
1398 }
1399
1400 #
1401 # finish up a pc context
1402 #
1403
1404 #
1405 # some active measures
1406 #
1407
1408
1409 sub send_dx_spot
1410 {
1411         my $self = shift;
1412         my $line = shift;
1413         my @dxchan = DXChannel->get_all();
1414         my $dxchan;
1415
1416         # send it if it isn't the except list and isn't isolated and still has a hop count
1417         # taking into account filtering and so on
1418         foreach $dxchan (@dxchan) {
1419                 next if $dxchan == $main::me;
1420                 next if $dxchan == $self && $self->is_node;
1421                 $dxchan->dx_spot($line, $self->{isolate}, @_, $self->{call});
1422         }
1423 }
1424
1425 sub dx_spot
1426 {
1427         my $self = shift;
1428         my $line = shift;
1429         my $isolate = shift;
1430         my ($filter, $hops);
1431
1432         if ($self->{spotsfilter}) {
1433                 ($filter, $hops) = $self->{spotsfilter}->it(@_);
1434                 return unless $filter;
1435         }
1436         send_prot_line($self, $filter, $hops, $isolate, $line);
1437 }
1438
1439 sub send_prot_line
1440 {
1441         my ($self, $filter, $hops, $isolate, $line) = @_;
1442         my $routeit;
1443
1444         if ($hops) {
1445                 $routeit = $line;
1446                 $routeit =~ s/\^H\d+\^\~$/\^H$hops\^\~/;
1447         } else {
1448                 $routeit = adjust_hops($self, $line);  # adjust its hop count by node name
1449                 return unless $routeit;
1450         }
1451         if ($filter) {
1452                 $self->send($routeit);
1453         } else {
1454                 $self->send($routeit) unless $self->{isolate} || $isolate;
1455         }
1456 }
1457
1458
1459 sub send_wwv_spot
1460 {
1461         my $self = shift;
1462         my $line = shift;
1463         my @dxchan = DXChannel->get_all();
1464         my $dxchan;
1465         my ($wwv_dxcc, $wwv_itu, $wwv_cq, $org_dxcc, $org_itu, $org_cq) = (0..0);
1466         my @dxcc = Prefix::extract($_[6]);
1467         if (@dxcc > 0) {
1468                 $wwv_dxcc = $dxcc[1]->dxcc;
1469                 $wwv_itu = $dxcc[1]->itu;
1470                 $wwv_cq = $dxcc[1]->cq;
1471         }
1472         @dxcc = Prefix::extract($_[7]);
1473         if (@dxcc > 0) {
1474                 $org_dxcc = $dxcc[1]->dxcc;
1475                 $org_itu = $dxcc[1]->itu;
1476                 $org_cq = $dxcc[1]->cq;
1477         }
1478
1479         # send it if it isn't the except list and isn't isolated and still has a hop count
1480         # taking into account filtering and so on
1481         foreach $dxchan (@dxchan) {
1482                 next if $dxchan == $main::me;
1483                 next if $dxchan == $self && $self->is_node;
1484                 my $routeit;
1485                 my ($filter, $hops);
1486
1487                 $dxchan->wwv($line, $self->{isolate}, @_, $self->{call}, $wwv_dxcc, $wwv_itu, $wwv_cq, $org_dxcc, $org_itu, $org_cq);
1488         }
1489
1490 }
1491
1492 sub wwv
1493 {
1494         my $self = shift;
1495         my $line = shift;
1496         my $isolate = shift;
1497         my ($filter, $hops);
1498
1499         if ($self->{wwvfilter}) {
1500                 ($filter, $hops) = $self->{wwvfilter}->it(@_);
1501                 return unless $filter;
1502         }
1503         send_prot_line($self, $filter, $hops, $isolate, $line)
1504 }
1505
1506 sub send_wcy_spot
1507 {
1508         my $self = shift;
1509         my $line = shift;
1510         my @dxchan = DXChannel->get_all();
1511         my $dxchan;
1512         my ($wcy_dxcc, $wcy_itu, $wcy_cq, $org_dxcc, $org_itu, $org_cq) = (0..0);
1513         my @dxcc = Prefix::extract($_[10]);
1514         if (@dxcc > 0) {
1515                 $wcy_dxcc = $dxcc[1]->dxcc;
1516                 $wcy_itu = $dxcc[1]->itu;
1517                 $wcy_cq = $dxcc[1]->cq;
1518         }
1519         @dxcc = Prefix::extract($_[11]);
1520         if (@dxcc > 0) {
1521                 $org_dxcc = $dxcc[1]->dxcc;
1522                 $org_itu = $dxcc[1]->itu;
1523                 $org_cq = $dxcc[1]->cq;
1524         }
1525
1526         # send it if it isn't the except list and isn't isolated and still has a hop count
1527         # taking into account filtering and so on
1528         foreach $dxchan (@dxchan) {
1529                 next if $dxchan == $main::me;
1530                 next if $dxchan == $self;
1531
1532                 $dxchan->wcy($line, $self->{isolate}, @_, $self->{call}, $wcy_dxcc, $wcy_itu, $wcy_cq, $org_dxcc, $org_itu, $org_cq);
1533         }
1534 }
1535
1536 sub wcy
1537 {
1538         my $self = shift;
1539         my $line = shift;
1540         my $isolate = shift;
1541         my ($filter, $hops);
1542
1543         if ($self->{wcyfilter}) {
1544                 ($filter, $hops) = $self->{wcyfilter}->it(@_);
1545                 return unless $filter;
1546         }
1547         send_prot_line($self, $filter, $hops, $isolate, $line) if $self->is_clx || $self->is_spider || $self->is_dxnet;
1548 }
1549
1550 # send an announce
1551 sub send_announce
1552 {
1553         my $self = shift;
1554         my $line = shift;
1555         my @dxchan = DXChannel->get_all();
1556         my $dxchan;
1557         my $target;
1558         my $to = 'To ';
1559         my $text = unpad($_[2]);
1560
1561         if ($_[3] eq '*') {     # sysops
1562                 $target = "SYSOP";
1563         } elsif ($_[3] gt ' ') { # speciality list handling
1564                 my ($name) = split /\./, $_[3];
1565                 $target = "$name"; # put the rest in later (if bothered)
1566         }
1567
1568         if ($_[5] eq '1') {
1569                 $target = "WX";
1570                 $to = '';
1571         }
1572         $target = "ALL" if !$target;
1573
1574
1575         # obtain country codes etc
1576         my ($ann_dxcc, $ann_itu, $ann_cq, $org_dxcc, $org_itu, $org_cq) = (0..0);
1577         my ($ann_state, $org_state) = ("", "");
1578         my @dxcc = Prefix::extract($_[0]);
1579         if (@dxcc > 0) {
1580                 $ann_dxcc = $dxcc[1]->dxcc;
1581                 $ann_itu = $dxcc[1]->itu;
1582                 $ann_cq = $dxcc[1]->cq;
1583                 $ann_state = $dxcc[1]->state;
1584         }
1585         @dxcc = Prefix::extract($_[4]);
1586         if (@dxcc > 0) {
1587                 $org_dxcc = $dxcc[1]->dxcc;
1588                 $org_itu = $dxcc[1]->itu;
1589                 $org_cq = $dxcc[1]->cq;
1590                 $org_state = $dxcc[1]->state;
1591         }
1592
1593         if ($self->{inannfilter}) {
1594                 my ($filter, $hops) =
1595                         $self->{inannfilter}->it(@_, $self->{call},
1596                                                                          $ann_dxcc, $ann_itu, $ann_cq,
1597                                                                          $org_dxcc, $org_itu, $org_cq, $ann_state, $org_state);
1598                 unless ($filter) {
1599                         dbg("PCPROT: Rejected by input announce filter") if isdbg('chanerr');
1600                         return;
1601                 }
1602         }
1603
1604         if (AnnTalk::dup($_[0], $_[1], $_[2])) {
1605                 dbg("PCPROT: Duplicate Announce ignored") if isdbg('chanerr');
1606                 return;
1607         }
1608
1609         Log('ann', $target, $_[0], $text);
1610
1611         # send it if it isn't the except list and isn't isolated and still has a hop count
1612         # taking into account filtering and so on
1613         foreach $dxchan (@dxchan) {
1614                 next if $dxchan == $main::me;
1615                 next if $dxchan == $self && $self->is_node;
1616                 $dxchan->announce($line, $self->{isolate}, $to, $target, $text, @_, $self->{call}, $ann_dxcc, $ann_itu, $ann_cq, $org_dxcc, $org_itu, $org_cq);
1617         }
1618 }
1619
1620 sub announce
1621 {
1622         my $self = shift;
1623         my $line = shift;
1624         my $isolate = shift;
1625         my $to = shift;
1626         my $target = shift;
1627         my $text = shift;
1628         my ($filter, $hops);
1629
1630         if ($self->{annfilter}) {
1631                 ($filter, $hops) = $self->{annfilter}->it(@_);
1632                 return unless $filter;
1633         }
1634         send_prot_line($self, $filter, $hops, $isolate, $line) unless $_[1] eq $main::mycall;
1635 }
1636
1637
1638 sub send_local_config
1639 {
1640         my $self = shift;
1641         my $node;
1642         my @nodes;
1643         my @localnodes;
1644         my @remotenodes;
1645
1646         dbg('DXProt::send_local_config') if isdbg('trace');
1647
1648         # send our nodes
1649         if ($self->{isolate}) {
1650                 @localnodes = ( $main::routeroot );
1651         } else {
1652                 # create a list of all the nodes that are not connected to this connection
1653                 # and are not themselves isolated, this to make sure that isolated nodes
1654         # don't appear outside of this node
1655                 my @dxchan = grep { $_->call ne $main::mycall && $_ != $self && !$_->{isolate} } DXChannel::get_all_nodes();
1656                 @localnodes = map { my $r = Route::Node::get($_->{call}); $r ? $r : () } @dxchan if @dxchan;
1657                 my @intcalls = map { $_->nodes } @localnodes if @localnodes;
1658                 my $ref = Route::Node::get($self->{call});
1659                 my @rnodes = $ref->nodes;
1660                 for my $node (@intcalls) {
1661                         push @remotenodes, Route::Node::get($node) unless grep $node eq $_, @rnodes;
1662                 }
1663                 unshift @localnodes, $main::routeroot;
1664         }
1665
1666
1667         $self->send_route(\&pc19, scalar(@localnodes)+scalar(@remotenodes), @localnodes, @remotenodes);
1668
1669         # get all the users connected on the above nodes and send them out
1670         foreach $node (@localnodes, @remotenodes) {
1671                 if ($node) {
1672                         my @rout = map {my $r = Route::User::get($_); $r ? ($r) : ()} $node->users;
1673                         $self->send_route(\&pc16, 1, $node, @rout) if @rout && $self->user->wantsendpc16;
1674                 } else {
1675                         dbg("sent a null value") if isdbg('chanerr');
1676                 }
1677         }
1678 }
1679
1680 #
1681 # route a message down an appropriate interface for a callsign
1682 #
1683 # is called route(to, pcline);
1684 #
1685 sub route
1686 {
1687         my ($self, $call, $line) = @_;
1688
1689         if (ref $self && $call eq $self->{call}) {
1690                 dbg("PCPROT: Trying to route back to source, dropped") if isdbg('chanerr');
1691                 return;
1692         }
1693
1694         # always send it down the local interface if available
1695         my $dxchan = DXChannel->get($call);
1696         unless ($dxchan) {
1697                 my $cl = Route::get($call);
1698                 $dxchan = $cl->dxchan if $cl;
1699                 if (ref $dxchan) {
1700                         if (ref $self && $dxchan eq $self) {
1701                                 dbg("PCPROT: Trying to route back to source, dropped") if isdbg('chanerr');
1702                                 return;
1703                         }
1704                 }
1705         }
1706         if ($dxchan) {
1707                 my $routeit = adjust_hops($dxchan, $line);   # adjust its hop count by node name
1708                 if ($routeit) {
1709                         $dxchan->send($routeit) unless $dxchan == $main::me;
1710                 }
1711         } else {
1712                 dbg("PCPROT: No route available, dropped") if isdbg('chanerr');
1713         }
1714 }
1715
1716 #
1717 # obtain the hops from the list for this callsign and pc no
1718 #
1719
1720 sub get_hops
1721 {
1722         my $pcno = shift;
1723         my $hops = $DXProt::hopcount{$pcno};
1724         $hops = $DXProt::def_hopcount if !$hops;
1725         return "H$hops";
1726 }
1727
1728 #
1729 # adjust the hop count on a per node basis using the user loadable
1730 # hop table if available or else decrement an existing one
1731 #
1732
1733 sub adjust_hops
1734 {
1735         my $self = shift;
1736         my $s = shift;
1737         my $call = $self->{call};
1738         my $hops;
1739
1740         if (($hops) = $s =~ /\^H(\d+)\^~?$/o) {
1741                 my ($pcno) = $s =~ /^PC(\d\d)/o;
1742                 confess "$call called adjust_hops with '$s'" unless $pcno;
1743                 my $ref = $nodehops{$call} if %nodehops;
1744                 if ($ref) {
1745                         my $newhops = $ref->{$pcno};
1746                         return "" if defined $newhops && $newhops == 0;
1747                         $newhops = $ref->{default} unless $newhops;
1748                         return "" if defined $newhops && $newhops == 0;
1749                         $newhops = $hops if !$newhops;
1750                         $s =~ s/\^H(\d+)(\^~?)$/\^H$newhops$2/ if $newhops;
1751                 } else {
1752                         # simply decrement it
1753                         $hops--;
1754                         return "" if !$hops;
1755                         $s =~ s/\^H(\d+)(\^~?)$/\^H$hops$2/ if $hops;
1756                 }
1757         }
1758         return $s;
1759 }
1760
1761 #
1762 # load hop tables
1763 #
1764 sub load_hops
1765 {
1766         my $self = shift;
1767         return $self->msg('lh1') unless -e "$main::data/hop_table.pl";
1768         do "$main::data/hop_table.pl";
1769         return $@ if $@;
1770         return ();
1771 }
1772
1773
1774 # add a ping request to the ping queues
1775 sub addping
1776 {
1777         my ($from, $to) = @_;
1778         my $ref = $pings{$to} || [];
1779         my $r = {};
1780         $r->{call} = $from;
1781         $r->{t} = [ gettimeofday ];
1782         route(undef, $to, pc51($to, $main::mycall, 1));
1783         push @$ref, $r;
1784         $pings{$to} = $ref;
1785 }
1786
1787 sub process_rcmd
1788 {
1789         my ($self, $tonode, $fromnode, $user, $cmd) = @_;
1790         if ($tonode eq $main::mycall) {
1791                 my $ref = DXUser->get_current($fromnode);
1792                 my $cref = Route::Node::get($fromnode);
1793                 Log('rcmd', 'in', $ref->{priv}, $fromnode, $cmd);
1794                 if ($cmd !~ /^\s*rcmd/i && $cref && $ref && $cref->call eq $ref->homenode) { # not allowed to relay RCMDS!
1795                         if ($ref->{priv}) {             # you have to have SOME privilege, the commands have further filtering
1796                                 $self->{remotecmd} = 1; # for the benefit of any command that needs to know
1797                                 my $oldpriv = $self->{priv};
1798                                 $self->{priv} = $ref->{priv}; # assume the user's privilege level
1799                                 my @in = (DXCommandmode::run_cmd($self, $cmd));
1800                                 $self->{priv} = $oldpriv;
1801                                 $self->send_rcmd_reply($main::mycall, $fromnode, $user, @in);
1802                                 delete $self->{remotecmd};
1803                         } else {
1804                                 $self->send_rcmd_reply($main::mycall, $fromnode, $user, "sorry...!");
1805                         }
1806                 } else {
1807                         $self->send_rcmd_reply($main::mycall, $fromnode, $user, "your attempt is logged, Tut tut tut...!");
1808                 }
1809         } else {
1810                 my $ref = DXUser->get_current($tonode);
1811                 if ($ref && $ref->is_clx) {
1812                         $self->route($tonode, pc84($fromnode, $tonode, $user, $cmd));
1813                 } else {
1814                         $self->route($tonode, pc34($fromnode, $tonode, $cmd));
1815                 }
1816         }
1817 }
1818
1819 sub process_rcmd_reply
1820 {
1821         my ($self, $tonode, $fromnode, $user, $line) = @_;
1822         if ($tonode eq $main::mycall) {
1823                 my $s = $rcmds{$fromnode};
1824                 if ($s) {
1825                         my $dxchan = DXChannel->get($s->{call});
1826                         my $ref = $user eq $tonode ? $dxchan : (DXChannel->get($user) || $dxchan);
1827                         $ref->send($line) if $ref;
1828                         delete $rcmds{$fromnode} if !$dxchan;
1829                 } else {
1830                         # send unsolicited ones to the sysop
1831                         my $dxchan = DXChannel->get($main::myalias);
1832                         $dxchan->send($line) if $dxchan;
1833                 }
1834         } else {
1835                 my $ref = DXUser->get_current($tonode);
1836                 if ($ref && $ref->is_clx) {
1837                         $self->route($tonode, pc85($fromnode, $tonode, $user, $line));
1838                 } else {
1839                         $self->route($tonode, pc35($fromnode, $tonode, $line));
1840                 }
1841         }
1842 }
1843
1844 sub send_rcmd_reply
1845 {
1846         my $self = shift;
1847         my $tonode = shift;
1848         my $fromnode = shift;
1849         my $user = shift;
1850         while (@_) {
1851                 my $line = shift;
1852                 $line =~ s/\s*$//;
1853                 Log('rcmd', 'out', $fromnode, $line);
1854                 if ($self->is_clx) {
1855                         $self->send(pc85($main::mycall, $fromnode, $user, "$main::mycall:$line"));
1856                 } else {
1857                         $self->send(pc35($main::mycall, $fromnode, "$main::mycall:$line"));
1858                 }
1859         }
1860 }
1861
1862 # add a rcmd request to the rcmd queues
1863 sub addrcmd
1864 {
1865         my ($self, $to, $cmd) = @_;
1866
1867         my $r = {};
1868         $r->{call} = $self->{call};
1869         $r->{t} = $main::systime;
1870         $r->{cmd} = $cmd;
1871         $rcmds{$to} = $r;
1872
1873         my $ref = Route::Node::get($to);
1874         my $dxchan = $ref->dxchan;
1875         if ($dxchan && $dxchan->is_clx) {
1876                 route(undef, $to, pc84($main::mycall, $to, $self->{call}, $cmd));
1877         } else {
1878                 route(undef, $to, pc34($main::mycall, $to, $cmd));
1879         }
1880 }
1881
1882 sub disconnect
1883 {
1884         my $self = shift;
1885         my $pc39flag = shift;
1886         my $call = $self->call;
1887
1888         return if $self->{disconnecting}++;
1889
1890         unless ($pc39flag && $pc39flag == 1) {
1891                 $self->send_now("D", DXProt::pc39($main::mycall, $self->msg('disc1', "System Op")));
1892         }
1893
1894         # get rid of any PC16/17/19/21s
1895         eph_del_regex("^PC(?:1[679]|21).*$call");
1896
1897         # do routing stuff, remove me from routing table
1898         my $node = Route::Node::get($call);
1899         my @rout;
1900         if ($node) {
1901                 @rout = $node->del($main::routeroot);
1902
1903                 # and all my ephemera as well
1904                 for (@rout) {
1905                         my $c = $_->call;
1906                         eph_del_regex("^PC(?:1[679]|21).*$c");
1907                 }
1908         }
1909
1910         # remove them from the pc19list as well
1911         while (my ($k,$v) = each %pc19list) {
1912                 my @l = grep {$_->[0] ne $call} @{$pc19list{$k}};
1913                 if (@l) {
1914                         $pc19list{$k} = \@l;
1915                 } else {
1916                         delete $pc19list{$k};
1917                 }
1918
1919                 # and the ephemera
1920                 eph_del_regex("^PC(?:1[679]|21).*$k");
1921         }
1922
1923         # unbusy and stop and outgoing mail
1924         my $mref = DXMsg::get_busy($call);
1925         $mref->stop_msg($call) if $mref;
1926
1927         # broadcast to all other nodes that all the nodes connected to via me are gone
1928         unless ($pc39flag && $pc39flag == 2) {
1929                 $self->route_pc21(@rout) if @rout;
1930         }
1931
1932         # remove outstanding pings
1933         delete $pings{$call};
1934
1935         # I was the last node visited
1936     $self->user->node($main::mycall);
1937
1938         # send info to all logged in thingies
1939         $self->tell_login('logoutn');
1940
1941         Log('DXProt', $call . " Disconnected");
1942
1943         $self->SUPER::disconnect;
1944 }
1945
1946
1947 #
1948 # send a talk message to this thingy
1949 #
1950 sub talk
1951 {
1952         my ($self, $from, $to, $via, $line, $origin) = @_;
1953
1954         $line =~ s/\^/\\5E/g;                   # remove any ^ characters
1955         $self->send(DXProt::pc10($from, $to, $via, $line, $origin));
1956         Log('talk', $to, $from, $via?$via:$self->call, $line) unless $origin && $origin ne $main::mycall;
1957 }
1958
1959 # send it if it isn't the except list and isn't isolated and still has a hop count
1960 # taking into account filtering and so on
1961 sub send_route
1962 {
1963         my $self = shift;
1964         my $generate = shift;
1965         my $no = shift;     # the no of things to filter on
1966         my $routeit;
1967         my ($filter, $hops);
1968         my @rin;
1969
1970         for (; @_ && $no; $no--) {
1971                 my $r = shift;
1972
1973                 if (!$self->{isolate} && $self->{routefilter}) {
1974                         $filter = undef;
1975                         if ($r) {
1976                                 ($filter, $hops) = $self->{routefilter}->it($self->{call}, $self->{dxcc}, $self->{itu}, $self->{cq}, $r->call, $r->dxcc, $r->itu, $r->cq, $self->{state}, $r->{state});
1977                                 if ($filter) {
1978                                         push @rin, $r;
1979                                 } else {
1980                                         dbg("DXPROT: $self->{call}/" . $r->call . " rejected by output filter") if isdbg('chanerr');
1981                                 }
1982                         } else {
1983                                 dbg("was sent a null value") if isdbg('chanerr');
1984                         }
1985                 } else {
1986                         push @rin, $r unless $self->{isolate} && $r->call ne $main::mycall;
1987                 }
1988         }
1989         if (@rin) {
1990                 foreach my $line (&$generate(@rin, @_)) {
1991                         if ($hops) {
1992                                 $routeit = $line;
1993                                 $routeit =~ s/\^H\d+\^\~$/\^H$hops\^\~/;
1994                         } else {
1995                                 $routeit = adjust_hops($self, $line);  # adjust its hop count by node name
1996                                 next unless $routeit;
1997                         }
1998                         $self->send($routeit);
1999                 }
2000         }
2001 }
2002
2003 sub broadcast_route
2004 {
2005         my $self = shift;
2006         my $generate = shift;
2007         my @dxchan = DXChannel::get_all_nodes();
2008         my $dxchan;
2009         my $line;
2010
2011         unless ($self->{isolate}) {
2012                 foreach $dxchan (@dxchan) {
2013                         next if $dxchan == $self;
2014                         next if $dxchan == $main::me;
2015                         next if $dxchan->user->wantnp;
2016                         next if ($generate == \&pc16 || $generate==\&pc17) && !$dxchan->user->wantsendpc16;
2017
2018                         $dxchan->send_route($generate, @_);
2019                 }
2020         }
2021 }
2022
2023 sub route_pc16
2024 {
2025         my $self = shift;
2026         return unless $self->user->wantpc16;
2027         broadcast_route($self, \&pc16, 1, @_);
2028 }
2029
2030 sub route_pc17
2031 {
2032         my $self = shift;
2033         return unless $self->user->wantpc16;
2034         broadcast_route($self, \&pc17, 1, @_);
2035 }
2036
2037 sub route_pc19
2038 {
2039         my $self = shift;
2040         broadcast_route($self, \&pc19, scalar @_, @_);
2041 }
2042
2043 sub route_pc21
2044 {
2045         my $self = shift;
2046         broadcast_route($self, \&pc21, scalar @_, @_);
2047 }
2048
2049 sub route_pc24
2050 {
2051         my $self = shift;
2052         broadcast_route($self, \&pc24, 1, @_);
2053 }
2054
2055 sub route_pc41
2056 {
2057         my $self = shift;
2058         broadcast_route($self, \&pc41, 1, @_);
2059 }
2060
2061 sub route_pc50
2062 {
2063         my $self = shift;
2064         broadcast_route($self, \&pc50, 1, @_);
2065 }
2066
2067 sub route_pc90
2068 {
2069         my $self = shift;
2070         broadcast_route($self, \&pc90, 1, @_);
2071 }
2072
2073 sub in_filter_route
2074 {
2075         my $self = shift;
2076         my $r = shift;
2077         my ($filter, $hops) = (1, 1);
2078
2079         if ($self->{inroutefilter}) {
2080                 ($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);
2081                 dbg("PCPROT: $self->{call}/" . $r->call . ' rejected by in_filter_route') if !$filter && isdbg('chanerr');
2082         }
2083         return $filter;
2084 }
2085
2086 sub eph_dup
2087 {
2088         my $s = shift;
2089         my $t = shift || $eph_restime;
2090         my $r;
2091
2092         # chop the end off
2093         $s =~ s/\^H\d\d?\^?\~?$//;
2094         $r = 1 if exists $eph{$s};    # pump up the dup if it keeps circulating
2095         $eph{$s} = $main::systime + $t;
2096         return $r;
2097 }
2098
2099 sub eph_del_regex
2100 {
2101         my $regex = shift;
2102         my ($key, $val);
2103         while (($key, $val) = each %eph) {
2104                 if ($key =~ m{$regex}) {
2105                         delete $eph{$key};
2106                 }
2107         }
2108 }
2109
2110 sub eph_clean
2111 {
2112         my ($key, $val);
2113
2114         while (($key, $val) = each %eph) {
2115                 if ($main::systime >= $val) {
2116                         delete $eph{$key};
2117                 }
2118         }
2119 }
2120
2121 sub eph_list
2122 {
2123         my ($key, $val);
2124         my @out;
2125
2126         while (($key, $val) = each %eph) {
2127                 push @out, $key, $val;
2128         }
2129         return @out;
2130 }
2131
2132 sub run_cmd
2133 {
2134         goto &DXCommandmode::run_cmd;
2135 }
2136 1;
2137 __END__