perl/DXProt.pm

   1 #!/usr/bin/perl
   2 #
   3 # This module impliments the protocal mode for a dx cluster
   4 #
   5 # Copyright (c) 1998 Dirk Koopman G1TLH
   6 #
   7 # $Id$
   8 #
   9
  10 package DXProt;
  11
  12 @ISA = qw(DXChannel);
  13
  14 use DXUtil;
  15 use DXChannel;
  16 use DXUser;
  17 use DXM;
  18 use DXProtVars;
  19 use DXCommandmode;
  20 use DXLog;
  21 use Spot;
  22 use DXProtout;
  23 use DXDebug;
  24 use Filter;
  25 use Local;
  26 use DXDb;
  27 use AnnTalk;
  28 use Geomag;
  29 use WCY;
  30 use Time::HiRes qw(gettimeofday tv_interval);
  31 use BadWords;
  32 use DXHash;
  33 use Route;
  34 use Route::Node;
  35 use Script;
  36
  37 use strict;
  38
  39 use vars qw($VERSION $BRANCH);
  40 $VERSION = sprintf( "%d.%03d", q$Revision$ =~ /(\d+)\.(\d+)/ );
  41 $BRANCH = sprintf( "%d.%03d", q$Revision$ =~ /\d+\.\d+\.(\d+)\.(\d+)/  || (0,0));
  42 $main::build += $VERSION;
  43 $main::branch += $BRANCH;
  44
  45 use vars qw($pc11_max_age $pc23_max_age $last_pc50 $eph_restime $eph_info_restime $eph_pc34_restime
  46                         $last_hour $last10 %eph  %pings %rcmds $ann_to_talk
  47                         $pingint $obscount %pc19list
  48                         %nodehops $baddx $badspotter $badnode $censorpc $rspfcheck
  49                         $allowzero $decode_dk0wcy $send_opernam @checklist);
  50
  51 $pc11_max_age = 1*3600;                 # the maximum age for an incoming 'real-time' pc11
  52 $pc23_max_age = 1*3600;                 # the maximum age for an incoming 'real-time' pc23
  53
  54 $last_hour = time;                              # last time I did an hourly periodic update
  55 %pings = ();                    # outstanding ping requests outbound
  56 %rcmds = ();                    # outstanding rcmd requests outbound
  57 %nodehops = ();                 # node specific hop control
  58 %pc19list = ();                                 # list of outstanding PC19s that haven't had PC16s on them
  59
  60 $censorpc = 1;                                  # Do a BadWords::check on text fields and reject things
  61                                                                 # loads of 'bad things'
  62 $baddx = new DXHash "baddx";
  63 $badspotter = new DXHash "badspotter";
  64 $badnode = new DXHash "badnode";
  65 $last10 = $last_pc50 = time;
  66 $ann_to_talk = 1;
  67 $rspfcheck = 1;
  68 $eph_restime = 180;
  69 $eph_info_restime = 60*60;
  70 $eph_pc34_restime = 30;
  71 $pingint = 5*60;
  72 $obscount = 2;
  73
  74 @checklist =
  75 (
  76  [ qw(c c m bp bc c) ],                 # pc10
  77  [ qw(f m d t m c c h) ],               # pc11
  78  [ qw(c bc m bp bm p h) ],              # pc12
  79  [ qw(c h) ],                                   #
  80  [ qw(c h) ],                                   #
  81  [ qw(c m h) ],                                 #
  82  undef ,                                                # pc16 has to be validated manually
  83  [ qw(c c h) ],                                 # pc17
  84  [ qw(m n) ],                                   # pc18
  85  undef ,                                                # pc19 has to be validated manually
  86  undef ,                                                # pc20 no validation
  87  [ qw(c m h) ],                                 # pc21
  88  undef ,                                                # pc22 no validation
  89  [ qw(d n n n n m c c h) ],             # pc23
  90  [ qw(c p h) ],                                 # pc24
  91  [ qw(c c n n) ],                               # pc25
  92  [ qw(f m d t m c c bc) ],              # pc26
  93  [ qw(d n n n n m c c bc) ],    # pc27
  94  [ qw(c c m c d t p m bp n p bp bc) ], # pc28
  95  [ qw(c c n m) ],                               # pc29
  96  [ qw(c c n) ],                                 # pc30
  97  [ qw(c c n) ],                                 # pc31
  98  [ qw(c c n) ],                                 # pc32
  99  [ qw(c c n) ],                                 # pc33
 100  [ qw(c c m) ],                                 # pc34
 101  [ qw(c c m) ],                                 # pc35
 102  [ qw(c c m) ],                                 # pc36
 103  [ qw(c c n m) ],                               # pc37
 104  undef,                                                 # pc38 not interested
 105  [ qw(c m) ],                                   # pc39
 106  [ qw(c c m p n) ],                             # pc40
 107  [ qw(c n m h) ],                               # pc41
 108  [ qw(c c n) ],                                 # pc42
 109  undef,                                                 # pc43 don't handle it
 110  [ qw(c c n m m c) ],                   # pc44
 111  [ qw(c c n m) ],                               # pc45
 112  [ qw(c c n) ],                                 # pc46
 113  undef,                                                 # pc47
 114  undef,                                                 # pc48
 115  [ qw(c m h) ],                                 # pc49
 116  [ qw(c n h) ],                                 # pc50
 117  [ qw(c c n) ],                                 # pc51
 118  undef,
 119  undef,
 120  undef,
 121  undef,
 122  undef,
 123  undef,
 124  undef,
 125  undef,
 126  undef,                                                 # pc60
 127  undef,
 128  undef,
 129  undef,
 130  undef,
 131  undef,
 132  undef,
 133  undef,
 134  undef,
 135  undef,
 136  undef,                                                 # pc70
 137  undef,
 138  undef,
 139  [ qw(d n n n n n n m m m c c h) ],     # pc73
 140  undef,
 141  undef,
 142  undef,
 143  undef,
 144  undef,
 145  undef,
 146  undef,                                                 # pc80
 147  undef,
 148  undef,
 149  undef,
 150  [ qw(c c c m) ],                               # pc84
 151  [ qw(c c c m) ],                               # pc85
 152 );
 153
 154 # use the entry in the check list to check the field list presented
 155 # return OK if line NOT in check list (for now)
 156 sub check
 157 {
 158         my $n = shift;
 159         $n -= 10;
 160         return 0 if $n < 0 || $n > @checklist;
 161         my $ref = $checklist[$n];
 162         return 0 unless ref $ref;
 163
 164         my $i;
 165         shift;    # not interested in the first field
 166         for ($i = 0; $i < @$ref; $i++) {
 167                 my ($blank, $act) = $$ref[$i] =~ /^(b?)(\w)$/;
 168                 return 0 unless $act;
 169                 next if $blank && $_[$i] =~ /^[ \*]$/;
 170                 if ($act eq 'c') {
 171                         return $i+1 unless is_callsign($_[$i]);
 172                 } elsif ($act eq 'm') {
 173                         return $i+1 unless is_pctext($_[$i]);
 174                 } elsif ($act eq 'p') {
 175                         return $i+1 unless is_pcflag($_[$i]);
 176                 } elsif ($act eq 'f') {
 177                         return $i+1 unless is_freq($_[$i]);
 178                 } elsif ($act eq 'n') {
 179                         return $i+1 unless $_[$i] =~ /^[\d ]+$/;
 180                 } elsif ($act eq 'h') {
 181                         return $i+1 unless $_[$i] =~ /^H\d\d?$/;
 182                 } elsif ($act eq 'd') {
 183                         return $i+1 unless $_[$i] =~ /^\s*\d+-\w\w\w-[12][90]\d\d$/;
 184                 } elsif ($act eq 't') {
 185                         return $i+1 unless $_[$i] =~ /^[012]\d[012345]\dZ$/;
 186                 }
 187         }
 188         return 0;
 189 }
 190
 191 sub init
 192 {
 193         do "$main::data/hop_table.pl" if -e "$main::data/hop_table.pl";
 194         confess $@ if $@;
 195 }
 196
 197 #
 198 # obtain a new connection this is derived from dxchannel
 199 #
 200
 201 sub new
 202 {
 203         my $self = DXChannel::alloc(@_);
 204
 205         # add this node to the table, the values get filled in later
 206         my $pkg = shift;
 207         my $call = shift;
 208         $main::routeroot->add($call, '5000', Route::here(1)) if $call ne $main::mycall;
 209
 210         return $self;
 211 }
 212
 213 # this is how a pc connection starts (for an incoming connection)
 214 # issue a PC38 followed by a PC18, then wait for a PC20 (remembering
 215 # all the crap that comes between).
 216 sub start
 217 {
 218         my ($self, $line, $sort) = @_;
 219         my $call = $self->{call};
 220         my $user = $self->{user};
 221
 222         # log it
 223         my $host = $self->{conn}->{peerhost} || "unknown";
 224         Log('DXProt', "$call connected from $host");
 225
 226         # remember type of connection
 227         $self->{consort} = $line;
 228         $self->{outbound} = $sort eq 'O';
 229         my $priv = $user->priv;
 230         $priv = $user->priv(1) unless $priv;
 231         $self->{priv} = $priv;     # other clusters can always be 'normal' users
 232         $self->{lang} = $user->lang || 'en';
 233         $self->{isolate} = $user->{isolate};
 234         $self->{consort} = $line;       # save the connection type
 235         $self->{here} = 1;
 236         $self->{width} = 80;
 237
 238         # sort out registration
 239         $self->{registered} = 1;
 240
 241         # get the output filters
 242         $self->{spotsfilter} = Filter::read_in('spots', $call, 0) || Filter::read_in('spots', 'node_default', 0);
 243         $self->{wwvfilter} = Filter::read_in('wwv', $call, 0) || Filter::read_in('wwv', 'node_default', 0);
 244         $self->{wcyfilter} = Filter::read_in('wcy', $call, 0) || Filter::read_in('wcy', 'node_default', 0);
 245         $self->{annfilter} = Filter::read_in('ann', $call, 0) || Filter::read_in('ann', 'node_default', 0) ;
 246         $self->{routefilter} = Filter::read_in('route', $call, 0) || Filter::read_in('route', 'node_default', 0) unless $self->{isolate} ;
 247
 248
 249         # get the INPUT filters (these only pertain to Clusters)
 250         $self->{inspotsfilter} = Filter::read_in('spots', $call, 1) || Filter::read_in('spots', 'node_default', 1);
 251         $self->{inwwvfilter} = Filter::read_in('wwv', $call, 1) || Filter::read_in('wwv', 'node_default', 1);
 252         $self->{inwcyfilter} = Filter::read_in('wcy', $call, 1) || Filter::read_in('wcy', 'node_default', 1);
 253         $self->{inannfilter} = Filter::read_in('ann', $call, 1) || Filter::read_in('ann', 'node_default', 1);
 254         $self->{inroutefilter} = Filter::read_in('route', $call, 1) || Filter::read_in('route', 'node_default', 1) unless $self->{isolate};
 255
 256         # set unbuffered and no echo
 257         $self->send_now('B',"0");
 258         $self->send_now('E',"0");
 259         $self->conn->echo(0) if $self->conn->can('echo');
 260
 261         # ping neighbour node stuff
 262         my $ping = $user->pingint;
 263         $ping = $pingint unless defined $ping;
 264         $self->{pingint} = $ping;
 265         $self->{nopings} = $user->nopings || $obscount;
 266         $self->{pingtime} = [ ];
 267         $self->{pingave} = 999;
 268         $self->{metric} ||= 100;
 269         $self->{lastping} = $main::systime;
 270
 271         # send initialisation string
 272         unless ($self->{outbound}) {
 273                 $self->sendinit;
 274         }
 275
 276         $self->state('init');
 277         $self->{pc50_t} = $main::systime;
 278
 279         # send info to all logged in thingies
 280         $self->tell_login('loginn');
 281
 282         # run a script send the output to the debug file
 283         my $script = new Script(lc $call) || new Script('node_default');
 284         $script->run($self) if $script;
 285 }
 286
 287 #
 288 # send outgoing 'challenge'
 289 #
 290
 291 sub sendinit
 292 {
 293         my $self = shift;
 294         $self->send(pc18());
 295 }
 296
 297 #
 298 # This is the normal pcxx despatcher
 299 #
 300 sub normal
 301 {
 302         my ($self, $line) = @_;
 303         my @field = split /\^/, $line;
 304         return unless @field;
 305
 306         pop @field if $field[-1] eq '~';
 307
 308 #       print join(',', @field), "\n";
 309
 310
 311         # process PC frames, this will fail unless the frame starts PCnn
 312         my ($pcno) = $field[0] =~ /^PC(\d\d)/; # just get the number
 313         return unless $pcno;
 314         return if $pcno < 10 || $pcno > 99;
 315
 316         # check for and dump bad protocol messages
 317         my $n = check($pcno, @field);
 318         if ($n) {
 319                 dbg("PCPROT: bad field $n, dumped (" . parray($checklist[$pcno-10]) . ")") if isdbg('chanerr');
 320                 return;
 321         }
 322
 323         # local processing 1
 324         my $pcr;
 325         eval {
 326                 $pcr = Local::pcprot($self, $pcno, @field);
 327         };
 328 #       dbg("Local::pcprot error $@") if isdbg('local') if $@;
 329         return if $pcr;
 330
 331  SWITCH: {
 332                 if ($pcno == 10) {              # incoming talk
 333
 334                         # rsfp check
 335                         return if $rspfcheck and !$self->rspfcheck(0, $field[6], $field[1]);
 336
 337                         # will we allow it at all?
 338                         if ($censorpc) {
 339                                 my @bad;
 340                                 if (@bad = BadWords::check($field[3])) {
 341                                         dbg("PCPROT: Bad words: @bad, dropped") if isdbg('chanerr');
 342                                         return;
 343                                 }
 344                         }
 345
 346                         # is it for me or one of mine?
 347                         my ($from, $to, $via, $call, $dxchan);
 348                         $from = $field[1];
 349                         if ($field[5] gt ' ') {
 350                                 $via = $field[2];
 351                                 $to = $field[5];
 352                         } else {
 353                                 $to = $field[2];
 354                         }
 355
 356                         # if this is a 'nodx' node then ignore it
 357                         if ($badnode->in($field[6]) || ($via && $badnode->in($via))) {
 358                                 dbg("PCPROT: Bad Node, dropped") if isdbg('chanerr');
 359                                 return;
 360                         }
 361
 362                         # if this is a 'bad spotter' user then ignore it
 363                         my $nossid = $from;
 364                         $nossid =~ s/-\d+$//;
 365                         if ($badspotter->in($nossid)) {
 366                                 dbg("PCPROT: Bad Spotter, dropped") if isdbg('chanerr');
 367                                 return;
 368                         }
 369
 370                         # if we are converting announces to talk is it a dup?
 371                         if ($ann_to_talk) {
 372                                 if (AnnTalk::is_talk_candidate($from, $field[3]) && AnnTalk::dup($from, $to, $field[3])) {
 373                                         dbg("DXPROT: Dupe talk from announce, dropped") if isdbg('chanerr');
 374                                         return;
 375                                 }
 376                         }
 377
 378                         # it is here and logged on
 379                         $dxchan = DXChannel->get($main::myalias) if $to eq $main::mycall;
 380                         $dxchan = DXChannel->get($to) unless $dxchan;
 381                         if ($dxchan && $dxchan->is_user) {
 382                                 $field[3] =~ s/\%5E/^/g;
 383                                 $dxchan->talk($from, $to, $via, $field[3]);
 384                                 return;
 385                         }
 386
 387                         # is it elsewhere, visible on the cluster via the to address?
 388                         # note: this discards the via unless the to address is on
 389                         # the via address
 390                         my ($ref, $vref);
 391                         if ($ref = Route::get($to)) {
 392                                 $vref = Route::Node::get($via) if $via;
 393                                 $vref = undef unless $vref && grep $to eq $_, $vref->users;
 394                                 $ref->dxchan->talk($from, $to, $vref ? $via : undef, $field[3], $field[6]);
 395                                 return;
 396                         }
 397
 398                         # not visible here, send a message of condolence
 399                         $vref = undef;
 400                         $ref = Route::get($from);
 401                         $vref = $ref = Route::Node::get($field[6]) unless $ref;
 402                         if ($ref) {
 403                                 $dxchan = $ref->dxchan;
 404                                 $dxchan->talk($main::mycall, $from, $vref ? $vref->call : undef, $dxchan->msg('talknh', $to) );
 405                         }
 406                         return;
 407                 }
 408
 409                 if ($pcno == 11 || $pcno == 26) { # dx spot
 410
 411                         # route 'foreign' pc26s
 412                         if ($pcno == 26) {
 413                                 if ($field[7] ne $main::mycall) {
 414                                         $self->route($field[7], $line);
 415                                         return;
 416                                 }
 417                         }
 418
 419                         # rsfp check
 420 #                       return if $rspfcheck and !$self->rspfcheck(1, $field[7], $field[6]);
 421
 422                         # if this is a 'nodx' node then ignore it
 423                         if ($badnode->in($field[7])) {
 424                                 dbg("PCPROT: Bad Node, dropped") if isdbg('chanerr');
 425                                 return;
 426                         }
 427
 428                         # if this is a 'bad spotter' user then ignore it
 429                         my $nossid = $field[6];
 430                         $nossid =~ s/-\d+$//;
 431                         if ($badspotter->in($nossid)) {
 432                                 dbg("PCPROT: Bad Spotter, dropped") if isdbg('chanerr');
 433                                 return;
 434                         }
 435
 436                         # convert the date to a unix date
 437                         my $d = cltounix($field[3], $field[4]);
 438                         # bang out (and don't pass on) if date is invalid or the spot is too old (or too young)
 439                         if (!$d || ($pcno == 11 && ($d < $main::systime - $pc11_max_age || $d > $main::systime + 900))) {
 440                                 dbg("PCPROT: Spot ignored, invalid date or out of range ($field[3] $field[4])\n") if isdbg('chanerr');
 441                                 return;
 442                         }
 443
 444                         # is it 'baddx'
 445                         if ($baddx->in($field[2]) || BadWords::check($field[2]) || $field[2] =~ /COCK/) {
 446                                 dbg("PCPROT: Bad DX spot, ignored") if isdbg('chanerr');
 447                                 return;
 448                         }
 449
 450                         # do some de-duping
 451                         $field[5] =~ s/^\s+//;      # take any leading blanks off
 452                         $field[2] = unpad($field[2]);   # take off leading and trailing blanks from spotted callsign
 453                         if ($field[2] =~ /BUST\w*$/) {
 454                                 dbg("PCPROT: useless 'BUSTED' spot") if isdbg('chanerr');
 455                                 return;
 456                         }
 457                         if ($censorpc) {
 458                                 my @bad;
 459                                 if (@bad = BadWords::check($field[5])) {
 460                                         dbg("PCPROT: Bad words: @bad, dropped") if isdbg('chanerr');
 461                                         return;
 462                                 }
 463                         }
 464
 465
 466                         my @spot = Spot::prepare($field[1], $field[2], $d, $field[5], $field[6], $field[7]);
 467                         # global spot filtering on INPUT
 468                         if ($self->{inspotsfilter}) {
 469                                 my ($filter, $hops) = $self->{inspotsfilter}->it(@spot);
 470                                 unless ($filter) {
 471                                         dbg("PCPROT: Rejected by input spot filter") if isdbg('chanerr');
 472                                         return;
 473                                 }
 474                         }
 475
 476                         # this goes after the input filtering, but before the add
 477                         # so that if it is input filtered, it isn't added to the dup
 478                         # list. This allows it to come in from a "legitimate" source
 479                         if (Spot::dup($field[1], $field[2], $d, $field[5], $field[6])) {
 480                                 dbg("PCPROT: Duplicate Spot ignored\n") if isdbg('chanerr');
 481                                 return;
 482                         }
 483
 484                         # add it
 485                         Spot::add(@spot);
 486
 487             #
 488                         # @spot at this point contains:-
 489             # freq, spotted call, time, text, spotter, spotted cc, spotters cc, orig node
 490                         # then  spotted itu, spotted cq, spotters itu, spotters cq
 491                         # you should be able to route on any of these
 492             #
 493
 494                         # fix up qra locators of known users
 495                         my $user = DXUser->get_current($spot[4]);
 496                         if ($user) {
 497                                 my $qra = $user->qra;
 498                                 unless ($qra && is_qra($qra)) {
 499                                         my $lat = $user->lat;
 500                                         my $long = $user->long;
 501                                         if (defined $lat && defined $long) {
 502                                                 $user->qra(DXBearing::lltoqra($lat, $long));
 503                                                 $user->put;
 504                                         }
 505                                 }
 506
 507                                 # send a remote command to a distant cluster if it is visible and there is no
 508                                 # qra locator and we havn't done it for a month.
 509
 510                                 unless ($user->qra) {
 511                                         my $node;
 512                                         my $to = $user->homenode;
 513                                         my $last = $user->lastoper || 0;
 514                                         if ($send_opernam && $to && $to ne $main::mycall && $main::systime > $last + $DXUser::lastoperinterval && ($node = Route::Node::get($to)) ) {
 515                                                 my $cmd = "forward/opernam $spot[4]";
 516                                                 # send the rcmd but we aren't interested in the replies...
 517                                                 my $dxchan = $node->dxchan;
 518                                                 if ($dxchan && $dxchan->is_clx) {
 519                                                         route(undef, $to, pc84($main::mycall, $to, $main::mycall, $cmd));
 520                                                 } else {
 521                                                         route(undef, $to, pc34($main::mycall, $to, $cmd));
 522                                                 }
 523                                                 if ($to ne $field[7]) {
 524                                                         $to = $field[7];
 525                                                         $node = Route::Node::get($to);
 526                                                         if ($node) {
 527                                                                 $dxchan = $node->dxchan;
 528                                                                 if ($dxchan && $dxchan->is_clx) {
 529                                                                         route(undef, $to, pc84($main::mycall, $to, $main::mycall, $cmd));
 530                                                                 } else {
 531                                                                         route(undef, $to, pc34($main::mycall, $to, $cmd));
 532                                                                 }
 533                                                         }
 534                                                 }
 535                                                 $user->lastoper($main::systime);
 536                                                 $user->put;
 537                                         }
 538                                 }
 539                         }
 540
 541                         # local processing
 542                         my $r;
 543                         eval {
 544                                 $r = Local::spot($self, @spot);
 545                         };
 546 #                       dbg("Local::spot1 error $@") if isdbg('local') if $@;
 547                         return if $r;
 548
 549                         # DON'T be silly and send on PC26s!
 550                         return if $pcno == 26;
 551
 552                         # send out the filtered spots
 553                         send_dx_spot($self, $line, @spot) if @spot;
 554                         return;
 555                 }
 556
 557                 if ($pcno == 12) {              # announces
 558
 559 #                       return if $rspfcheck and !$self->rspfcheck(1, $field[5], $field[1]);
 560
 561                         # announce duplicate checking
 562                         $field[3] =~ s/^\s+//;  # remove leading blanks
 563
 564                         if ($censorpc) {
 565                                 my @bad;
 566                                 if (@bad = BadWords::check($field[3])) {
 567                                         dbg("PCPROT: Bad words: @bad, dropped") if isdbg('chanerr');
 568                                         return;
 569                                 }
 570                         }
 571
 572                         # if this is a 'nodx' node then ignore it
 573                         if ($badnode->in($field[5])) {
 574                                 dbg("PCPROT: Bad Node, dropped") if isdbg('chanerr');
 575                                 return;
 576                         }
 577
 578                         # if this is a 'bad spotter' user then ignore it
 579                         my $nossid = $field[1];
 580                         $nossid =~ s/-\d+$//;
 581                         if ($badspotter->in($nossid)) {
 582                                 dbg("PCPROT: Bad Spotter, dropped") if isdbg('chanerr');
 583                                 return;
 584                         }
 585
 586                         if ($field[2] eq '*' || $field[2] eq $main::mycall) {
 587
 588
 589                                 # here's a bit of fun, convert incoming ann with a callsign in the first word
 590                                 # or one saying 'to <call>' to a talk if we can route to the recipient
 591                                 if ($ann_to_talk) {
 592                                         my $call = AnnTalk::is_talk_candidate($field[1], $field[3]);
 593                                         if ($call) {
 594                                                 my $ref = Route::get($call);
 595                                                 if ($ref) {
 596                                                         my $dxchan = $ref->dxchan;
 597                                                         $dxchan->talk($field[1], $call, undef, $field[3], $field[5]) if $dxchan != $self;
 598                                                         return;
 599                                                 }
 600                                         }
 601                                 }
 602
 603                                 # send it
 604                                 $self->send_announce($line, @field[1..6]);
 605                         } else {
 606                                 $self->route($field[2], $line);
 607                         }
 608                         return;
 609                 }
 610
 611                 if ($pcno == 13) {
 612                         last SWITCH;
 613                 }
 614                 if ($pcno == 14) {
 615                         last SWITCH;
 616                 }
 617                 if ($pcno == 15) {
 618                         last SWITCH;
 619                 }
 620
 621                 if ($pcno == 16) {              # add a user
 622
 623                         if (eph_dup($line)) {
 624                                 dbg("PCPROT: dup PC16 detected") if isdbg('chanerr');
 625                                 return;
 626                         }
 627
 628                         # general checks
 629                         my $dxchan;
 630                         my $ncall = $field[1];
 631                         my $newline = "PC16^";
 632
 633                         # do I want users from this channel?
 634                         unless ($self->user->wantpc16) {
 635                                 dbg("PCPROT: don't send users to $self->{call}") if isdbg('chanerr');
 636                                 return;
 637                         }
 638                         # is it me?
 639                         if ($ncall eq $main::mycall) {
 640                                 dbg("PCPROT: trying to alter config on this node from outside!") if isdbg('chanerr');
 641                                 return;
 642                         }
 643                         my $parent = Route::Node::get($ncall);
 644
 645                         # if there is a parent, proceed, otherwise if there is a latent PC19 in the PC19list,
 646                         # fix it up in the routing tables and issue it forth before the PC16
 647                         unless ($parent) {
 648                                 my $nl = $pc19list{$ncall};
 649
 650                                 if ($nl && @field > 3) {                     # 3 because of the hop count!
 651
 652                                         # this is a new (remembered) node, now attach it to me if it isn't in filtered
 653                                         # and we haven't disallowed it
 654                                         my $user = DXUser->get_current($ncall);
 655                                         if (!$user) {
 656                                                 $user = DXUser->new($ncall);
 657                                                 $user->sort('A');
 658                                                 $user->priv(1);                   # I have relented and defaulted nodes
 659                                                 $user->lockout(1);
 660                                                 $user->homenode($ncall);
 661                                                 $user->node($ncall);
 662                                         }
 663
 664                                         my $wantpc19 = $user->wantroutepc19;
 665                                         if ($wantpc19 || !defined $wantpc19) {
 666                                                 my $new = Route->new($ncall);          # throw away
 667                                                 if ($self->in_filter_route($new)) {
 668                                                         my @nrout;
 669                                                         for (@$nl) {
 670                                                                 $parent = Route::Node::get($_->[0]);
 671                                                                 $dxchan = $parent->dxchan if $parent;
 672                                                                 if ($dxchan && $dxchan ne $self) {
 673                                                                         dbg("PCPROT: PC16 from $self->{call} trying to alter locally connected $ncall, ignored!") if isdbg('chanerr');
 674                                                                         $parent = undef;
 675                                                                 }
 676                                                                 if ($parent) {
 677                                                                         my $r = $parent->add($ncall, $_->[1], $_->[2]);
 678                                                                         push @nrout, $r unless @nrout;
 679                                                                 }
 680                                                         }
 681                                                         $user->wantroutepc19(1) unless defined $wantpc19;              # for now we work on the basis that pc16 = real route
 682                                                         $user->lastin($main::systime) unless DXChannel->get($ncall);
 683                                                         $user->put;
 684
 685                                                         # route the pc19 - this will cause 'stuttering PC19s' for a while
 686                                                         $self->route_pc19(@nrout) if @nrout ;
 687                                                         $parent = Route::Node::get($ncall);
 688                                                 } else {
 689                                                         return;
 690                                                 }
 691                                                 delete $pc19list{$ncall};
 692                                         }
 693                                 } else {
 694                                         dbg("PCPROT: Node $ncall not in config") if isdbg('chanerr');
 695                                         return;
 696                                 }
 697                         } else {
 698
 699                                 $dxchan = $parent->dxchan;
 700                                 if ($dxchan && $dxchan ne $self) {
 701                                         dbg("PCPROT: PC16 from $self->{call} trying to alter locally connected $ncall, ignored!") if isdbg('chanerr');
 702                                         return;
 703                                 }
 704
 705                                 # input filter if required
 706                                 return unless $self->in_filter_route($parent);
 707                         }
 708
 709                         my $i;
 710                         my @rout;
 711                         for ($i = 2; $i < $#field; $i++) {
 712                                 my ($call, $conf, $here) = $field[$i] =~ /^(\S+) (\S) (\d)/o;
 713                                 next unless $call && $conf && defined $here && is_callsign($call);
 714                                 next if $call eq $main::mycall;
 715
 716                                 eph_del_regex("^PC17\\^$call\\^$ncall");
 717
 718                                 $conf = $conf eq '*';
 719
 720                                 # reject this if we think it is a node already
 721                                 my $r = Route::Node::get($call);
 722                                 my $u = DXUser->get_current($call) unless $r;
 723                                 if ($r || ($u && $u->is_node)) {
 724                                         dbg("PCPROT: $call is a node") if isdbg('chanerr');
 725                                         next;
 726                                 }
 727
 728                                 $r = Route::User::get($call);
 729                                 my $flags = Route::here($here)|Route::conf($conf);
 730
 731                                 if ($r) {
 732                                         if ($r->flags != $flags) {
 733                                                 $r->flags($flags);
 734                                                 push @rout, $r;
 735                                         }
 736                                         $r->addparent($parent);
 737                                 } else {
 738                                         push @rout, $parent->add_user($call, $flags);
 739                                 }
 740
 741
 742                                 # add this station to the user database, if required
 743                                 $call =~ s/-\d+$//o;        # remove ssid for users
 744                                 my $user = DXUser->get_current($call);
 745                                 $user = DXUser->new($call) if !$user;
 746                                 $user->homenode($parent->call) if !$user->homenode;
 747                                 $user->node($parent->call);
 748                                 $user->lastin($main::systime) unless DXChannel->get($call);
 749                                 $user->put;
 750                         }
 751
 752                         # queue up any messages (look for privates only)
 753                         DXMsg::queue_msg(1) if $self->state eq 'normal';
 754
 755                         $self->route_pc16($parent, @rout) if @rout;
 756                         return;
 757                 }
 758
 759                 if ($pcno == 17) {              # remove a user
 760                         my $dxchan;
 761                         my $ncall = $field[2];
 762                         my $ucall = $field[1];
 763
 764                         eph_del_regex("^PC16\\^$ncall.*$ucall");
 765
 766                         # do I want users from this channel?
 767                         unless ($self->user->wantpc16) {
 768                                 dbg("PCPROT: don't send users to $self->{call}") if isdbg('chanerr');
 769                                 return;
 770                         }
 771                         if ($ncall eq $main::mycall) {
 772                                 dbg("PCPROT: trying to alter config on this node from outside!") if isdbg('chanerr');
 773                                 return;
 774                         }
 775
 776                         my $uref = Route::User::get($ucall);
 777                         unless ($uref) {
 778                                 dbg("PCPROT: Route::User $ucall not in config") if isdbg('chanerr');
 779                                 return;
 780                         }
 781                         my $parent = Route::Node::get($ncall);
 782                         unless ($parent) {
 783                                 dbg("PCPROT: Route::Node $ncall not in config") if isdbg('chanerr');
 784                                 return;
 785                         }
 786
 787                         $dxchan = $parent->dxchan;
 788                         if ($dxchan && $dxchan ne $self) {
 789                                 dbg("PCPROT: PC17 from $self->{call} trying to alter locally connected $ncall, ignored!") if isdbg('chanerr');
 790                                 return;
 791                         }
 792
 793                         # input filter if required
 794                         return unless $self->in_filter_route($parent);
 795
 796                         $parent->del_user($uref);
 797
 798                         if (eph_dup($line)) {
 799                                 dbg("PCPROT: dup PC17 detected") if isdbg('chanerr');
 800                                 return;
 801                         }
 802
 803                         $self->route_pc17($parent, $uref);
 804                         return;
 805                 }
 806
 807                 if ($pcno == 18) {              # link request
 808                         $self->state('init');
 809
 810                         # record the type and version offered
 811                         if ($field[1] =~ /DXSpider Version: (\d+\.\d+) Build: (\d+\.\d+)/) {
 812                                 $self->version(53 + $1);
 813                                 $self->user->version(53 + $1);
 814                                 $self->build(0 + $2);
 815                                 $self->user->build(0 + $2);
 816                                 unless ($self->is_spider) {
 817                                         $self->user->sort('S');
 818                                         $self->user->put;
 819                                         $self->sort('S');
 820                                 }
 821                         } else {
 822                                 $self->version(50.0);
 823                                 $self->version($field[2] / 100) if $field[2] && $field[2] =~ /^\d+$/;
 824                                 $self->user->version($self->version);
 825                         }
 826
 827                         # first clear out any nodes on this dxchannel
 828                         my $parent = Route::Node::get($self->{call});
 829                         my @rout = $parent->del_nodes;
 830                         $self->route_pc21(@rout, $parent) if @rout;
 831                         $self->send_local_config();
 832                         $self->send(pc20());
 833                         return;             # we don't pass these on
 834                 }
 835
 836                 if ($pcno == 19) {              # incoming cluster list
 837                         my $i;
 838                         my $newline = "PC19^";
 839
 840                         if (eph_dup($line)) {
 841                                 dbg("PCPROT: dup PC19 detected") if isdbg('chanerr');
 842                                 return;
 843                         }
 844
 845                         # new routing list
 846                         my @rout;
 847                         my $parent = Route::Node::get($self->{call});
 848                         unless ($parent) {
 849                                 dbg("DXPROT: my parent $self->{call} has disappeared");
 850                                 $self->disconnect;
 851                                 return;
 852                         }
 853
 854                         # parse the PC19
 855                         for ($i = 1; $i < $#field-1; $i += 4) {
 856                                 my $here = $field[$i];
 857                                 my $call = uc $field[$i+1];
 858                                 my $conf = $field[$i+2];
 859                                 my $ver = $field[$i+3];
 860                                 next unless defined $here && defined $conf && is_callsign($call);
 861
 862                                 eph_del_regex("^PC(?:21\\^$call|17\\^[^\\^]+\\^$call)");
 863
 864                                 # check for sane parameters
 865 #                               $ver = 5000 if $ver eq '0000';
 866                                 next if $ver < 5000; # only works with version 5 software
 867                                 next if length $call < 3; # min 3 letter callsigns
 868                                 next if $call eq $main::mycall;
 869
 870                                 # check that this PC19 isn't trying to alter the wrong dxchan
 871                                 my $dxchan = DXChannel->get($call);
 872                                 if ($dxchan && $dxchan != $self) {
 873                                         dbg("PCPROT: PC19 from $self->{call} trying to alter wrong locally connected $call, ignored!") if isdbg('chanerr');
 874                                         next;
 875                                 }
 876
 877                                 # add this station to the user database, if required (don't remove SSID from nodes)
 878                                 my $user = DXUser->get_current($call);
 879                                 if (!$user) {
 880                                         $user = DXUser->new($call);
 881                                         $user->sort('A');
 882                                         $user->priv(1);                   # I have relented and defaulted nodes
 883                                         $user->lockout(1);
 884                                         $user->homenode($call);
 885                                         $user->node($call);
 886                                 }
 887
 888                                 my $r = Route::Node::get($call);
 889                                 my $flags = Route::here($here)|Route::conf($conf);
 890
 891                                 # modify the routing table if it is in it, otherwise store it in the pc19list for now
 892                                 if ($r) {
 893                                         my $ar;
 894                                         if ($call ne $parent->call) {
 895                                                 if ($self->in_filter_route($r)) {
 896                                                         $ar = $parent->add($call, $ver, $flags);
 897                                                         push @rout, $ar if $ar;
 898                                                 } else {
 899                                                         next;
 900                                                 }
 901                                         }
 902                                         if ($r->version ne $ver || $r->flags != $flags) {
 903                                                 $r->version($ver);
 904                                                 $r->flags($flags);
 905                                                 push @rout, $r unless $ar;
 906                                         }
 907                                 } else {
 908
 909                                         # if he is directly connected or allowed then add him, otherwise store him up for later
 910                                         if ($call eq $self->{call} || $user->wantroutepc19) {
 911                                                 my $new = Route->new($call);          # throw away
 912                                                 if ($self->in_filter_route($new)) {
 913                                                         my $ar = $parent->add($call, $ver, $flags);
 914                                                         $user->wantroutepc19(1) unless defined $user->wantroutepc19;
 915                                                         push @rout, $ar if $ar;
 916                                                 } else {
 917                                                         next;
 918                                                 }
 919                                         } else {
 920                                                 $pc19list{$call} = [] unless exists $pc19list{$call};
 921                                                 my $nl = $pc19list{$call};
 922                                                 push @{$pc19list{$call}}, [$self->{call}, $ver, $flags] unless grep $_->[0] eq $self->{call}, @$nl;
 923                                         }
 924                                 }
 925
 926                                 # unbusy and stop and outgoing mail (ie if somehow we receive another PC19 without a disconnect)
 927                                 my $mref = DXMsg::get_busy($call);
 928                                 $mref->stop_msg($call) if $mref;
 929
 930                                 $user->lastin($main::systime) unless DXChannel->get($call);
 931                                 $user->put;
 932                         }
 933
 934
 935                         $self->route_pc19(@rout) if @rout;
 936                         return;
 937                 }
 938
 939                 if ($pcno == 20) {              # send local configuration
 940                         $self->send_local_config();
 941                         $self->send(pc22());
 942                         $self->state('normal');
 943                         $self->{lastping} = 0;
 944                         return;
 945                 }
 946
 947                 if ($pcno == 21) {              # delete a cluster from the list
 948                         my $call = uc $field[1];
 949
 950                         eph_del_regex("^PC1[679].*$call");
 951
 952                         # if I get a PC21 from the same callsign as self then treat it
 953                         # as a PC39: I have gone away
 954                         if ($call eq $self->call) {
 955                                 $self->disconnect(1);
 956                                 return;
 957                         }
 958
 959                         # check to see if we are in the pc19list, if we are then don't bother with any of
 960                         # this routing table manipulation, just remove it from the list and dump it
 961                         my @rout;
 962                         if (my $nl = $pc19list{$call}) {
 963                                 $pc19list{$call} = [ grep {$_->[0] ne $self->{call}} @$nl ];
 964                                 delete $pc19list{$call} unless @{$pc19list{$call}};
 965                         } else {
 966
 967                                 my $parent = Route::Node::get($self->{call});
 968                                 unless ($parent) {
 969                                         dbg("DXPROT: my parent $self->{call} has disappeared");
 970                                         $self->disconnect;
 971                                         return;
 972                                 }
 973                                 if ($call ne $main::mycall) { # don't allow malicious buggers to disconnect me!
 974                                         my $node = Route::Node::get($call);
 975                                         if ($node) {
 976
 977                                                 my $dxchan = DXChannel->get($call);
 978                                                 if ($dxchan && $dxchan != $self) {
 979                                                         dbg("PCPROT: PC21 from $self->{call} trying to alter locally connected $call, ignored!") if isdbg('chanerr');
 980                                                         return;
 981                                                 }
 982
 983                                                 # input filter it
 984                                                 return unless $self->in_filter_route($node);
 985
 986                                                 # routing objects
 987                                                 push @rout, $node->del($parent);
 988                                         }
 989                                 } else {
 990                                         dbg("PCPROT: I WILL _NOT_ be disconnected!") if isdbg('chanerr');
 991                                         return;
 992                                 }
 993                         }
 994
 995                         $self->route_pc21(@rout) if @rout;
 996                         return;
 997                 }
 998
 999                 if ($pcno == 22) {
1000                         $self->state('normal');
1001                         $self->{lastping} = 0;
1002                         return;
1003                 }
1004
1005                 if ($pcno == 23 || $pcno == 27) { # WWV info
1006
1007                         # route 'foreign' pc27s
1008                         if ($pcno == 27) {
1009                                 if ($field[8] ne $main::mycall) {
1010                                         $self->route($field[8], $line);
1011                                         return;
1012                                 }
1013                         }
1014
1015                         return if $rspfcheck and !$self->rspfcheck(1, $field[8], $field[7]);
1016
1017                         # do some de-duping
1018                         my $d = cltounix($field[1], sprintf("%02d18Z", $field[2]));
1019                         my $sfi = unpad($field[3]);
1020                         my $k = unpad($field[4]);
1021                         my $i = unpad($field[5]);
1022                         my ($r) = $field[6] =~ /R=(\d+)/;
1023                         $r = 0 unless $r;
1024                         if (($pcno == 23 && $d < $main::systime - $pc23_max_age) || $d > $main::systime + 1500 || $field[2] < 0 || $field[2] > 23) {
1025                                 dbg("PCPROT: WWV Date ($field[1] $field[2]) out of range") if isdbg('chanerr');
1026                                 return;
1027                         }
1028                         if (Geomag::dup($d,$sfi,$k,$i,$field[6])) {
1029                                 dbg("PCPROT: Dup WWV Spot ignored\n") if isdbg('chanerr');
1030                                 return;
1031                         }
1032                         $field[7] =~ s/-\d+$//o;            # remove spotter's ssid
1033
1034                         my $wwv = Geomag::update($d, $field[2], $sfi, $k, $i, @field[6..8], $r);
1035
1036                         my $rep;
1037                         eval {
1038                                 $rep = Local::wwv($self, $field[1], $field[2], $sfi, $k, $i, @field[6..8], $r);
1039                         };
1040 #                       dbg("Local::wwv2 error $@") if isdbg('local') if $@;
1041                         return if $rep;
1042
1043                         # DON'T be silly and send on PC27s!
1044                         return if $pcno == 27;
1045
1046                         # broadcast to the eager world
1047                         send_wwv_spot($self, $line, $d, $field[2], $sfi, $k, $i, @field[6..8]);
1048                         return;
1049                 }
1050
1051                 if ($pcno == 24) {              # set here status
1052                         my $call = uc $field[1];
1053                         my ($nref, $uref);
1054                         $nref = Route::Node::get($call);
1055                         $uref = Route::User::get($call);
1056                         return unless $nref || $uref;   # if we don't know where they are, it's pointless sending it on
1057
1058                         unless (eph_dup($line)) {
1059                                 $nref->here($field[2]) if $nref;
1060                                 $uref->here($field[2]) if $uref;
1061                                 my $ref = $nref || $uref;
1062                                 return unless $self->in_filter_route($ref);
1063                                 $self->route_pc24($ref, $field[3]);
1064                         }
1065                         return;
1066                 }
1067
1068                 if ($pcno == 25) {      # merge request
1069                         if ($field[1] ne $main::mycall) {
1070                                 $self->route($field[1], $line);
1071                                 return;
1072                         }
1073                         if ($field[2] eq $main::mycall) {
1074                                 dbg("PCPROT: Trying to merge to myself, ignored") if isdbg('chanerr');
1075                                 return;
1076                         }
1077
1078                         Log('DXProt', "Merge request for $field[3] spots and $field[4] WWV from $field[2]");
1079
1080                         # spots
1081                         if ($field[3] > 0) {
1082                                 my @in = reverse Spot::search(1, undef, undef, 0, $field[3]);
1083                                 my $in;
1084                                 foreach $in (@in) {
1085                                         $self->send(pc26(@{$in}[0..4], $field[2]));
1086                                 }
1087                         }
1088
1089                         # wwv
1090                         if ($field[4] > 0) {
1091                                 my @in = reverse Geomag::search(0, $field[4], time, 1);
1092                                 my $in;
1093                                 foreach $in (@in) {
1094                                         $self->send(pc27(@{$in}[0..5], $field[2]));
1095                                 }
1096                         }
1097                         return;
1098                 }
1099
1100                 if (($pcno >= 28 && $pcno <= 33) || $pcno == 40 || $pcno == 42 || $pcno == 49) { # mail/file handling
1101                         return if $pcno == 49 && eph_dup($line);
1102                         if ($pcno == 49 || $field[1] eq $main::mycall) {
1103                                 DXMsg::process($self, $line);
1104                         } else {
1105                                 $self->route($field[1], $line) unless $self->is_clx;
1106                         }
1107                         return;
1108                 }
1109
1110                 if ($pcno == 34 || $pcno == 36) { # remote commands (incoming)
1111                         if (eph_dup($line, $eph_pc34_restime)) {
1112                                 dbg("PCPROT: dupe") if isdbg('chanerr');
1113                         } else {
1114                                 $self->process_rcmd($field[1], $field[2], $field[2], $field[3]);
1115                         }
1116                         return;
1117                 }
1118
1119                 if ($pcno == 35) {              # remote command replies
1120                         eph_del_regex("^PC35\\^$field[2]\\^$field[1]\\^");
1121                         $self->process_rcmd_reply($field[1], $field[2], $field[1], $field[3]);
1122                         return;
1123                 }
1124
1125                 # for pc 37 see 44 onwards
1126
1127                 if ($pcno == 38) {              # node connected list from neighbour
1128                         return;
1129                 }
1130
1131                 if ($pcno == 39) {              # incoming disconnect
1132                         if ($field[1] eq $self->{call}) {
1133                                 $self->disconnect(1);
1134                         } else {
1135                                 dbg("PCPROT: came in on wrong channel") if isdbg('chanerr');
1136                         }
1137                         return;
1138                 }
1139
1140                 if ($pcno == 41) {              # user info
1141                         my $call = $field[1];
1142
1143                         if (eph_dup($line, $eph_info_restime)) {
1144                                 dbg("PCPROT: dupe") if isdbg('chanerr');
1145                                 return;
1146                         }
1147
1148                         # input filter if required
1149 #                       my $ref = Route::get($call) || Route->new($call);
1150 #                       return unless $self->in_filter_route($ref);
1151
1152                         if ($field[3] eq $field[2] || $field[3] =~ /^\s*$/) {
1153                                 dbg('PCPROT: invalid value') if isdbg('chanerr');
1154                                 return;
1155                         }
1156
1157                         # add this station to the user database, if required
1158                         my $user = DXUser->get_current($call);
1159                         $user = DXUser->new($call) unless $user;
1160
1161                         if ($field[2] == 1) {
1162                                 $user->name($field[3]);
1163                         } elsif ($field[2] == 2) {
1164                                 $user->qth($field[3]);
1165                         } elsif ($field[2] == 3) {
1166                                 if (is_latlong($field[3])) {
1167                                         my ($lat, $long) = DXBearing::stoll($field[3]);
1168                                         $user->lat($lat);
1169                                         $user->long($long);
1170                                         $user->qra(DXBearing::lltoqra($lat, $long));
1171                                 } else {
1172                                         dbg('PCPROT: not a valid lat/long') if isdbg('chanerr');
1173                                         return;
1174                                 }
1175                         } elsif ($field[2] == 4) {
1176                                 $user->homenode($field[3]);
1177                         } elsif ($field[2] == 5) {
1178                                 if (is_qra(uc $field[3])) {
1179                                         my ($lat, $long) = DXBearing::qratoll(uc $field[3]);
1180                                         $user->lat($lat);
1181                                         $user->long($long);
1182                                         $user->qra(uc $field[3]);
1183                                 } else {
1184                                         dbg('PCPROT: not a valid QRA locator') if isdbg('chanerr');
1185                                         return;
1186                                 }
1187                         }
1188                         $user->lastoper($main::systime);   # to cut down on excessive for/opers being generated
1189                         $user->put;
1190
1191                         unless ($self->{isolate}) {
1192                                 DXChannel::broadcast_nodes($line, $self); # send it to everyone but me
1193                         }
1194
1195 #  perhaps this IS what we want after all
1196 #                       $self->route_pc41($ref, $call, $field[2], $field[3], $field[4]);
1197                         return;
1198                 }
1199
1200                 if ($pcno == 43) {
1201                         last SWITCH;
1202                 }
1203
1204                 if ($pcno == 37 || $pcno == 44 || $pcno == 45 || $pcno == 46 || $pcno == 47 || $pcno == 48) {
1205                         DXDb::process($self, $line);
1206                         return;
1207                 }
1208
1209                 if ($pcno == 50) {              # keep alive/user list
1210                         my $call = $field[1];
1211                         my $node = Route::Node::get($call);
1212                         if ($node) {
1213                                 return unless $node->call eq $self->{call};
1214                                 $node->usercount($field[2]);
1215
1216                                 # input filter if required
1217                                 return unless $self->in_filter_route($node);
1218
1219                                 $self->route_pc50($node, $field[2], $field[3]) unless eph_dup($line);
1220                         }
1221                         return;
1222                 }
1223
1224                 if ($pcno == 51) {              # incoming ping requests/answers
1225                         my $to = $field[1];
1226                         my $from = $field[2];
1227                         my $flag = $field[3];
1228
1229
1230                         # is it for us?
1231                         if ($to eq $main::mycall) {
1232                                 if ($flag == 1) {
1233                                         $self->send(pc51($from, $to, '0'));
1234                                 } else {
1235                                         # it's a reply, look in the ping list for this one
1236                                         my $ref = $pings{$from};
1237                                         if ($ref) {
1238                                                 my $tochan =  DXChannel->get($from);
1239                                                 while (@$ref) {
1240                                                         my $r = shift @$ref;
1241                                                         my $dxchan = DXChannel->get($r->{call});
1242                                                         next unless $dxchan;
1243                                                         my $t = tv_interval($r->{t}, [ gettimeofday ]);
1244                                                         if ($dxchan->is_user) {
1245                                                                 my $s = sprintf "%.2f", $t;
1246                                                                 my $ave = sprintf "%.2f", $tochan ? ($tochan->{pingave} || $t) : $t;
1247                                                                 $dxchan->send($dxchan->msg('pingi', $from, $s, $ave))
1248                                                         } elsif ($dxchan->is_node) {
1249                                                                 if ($tochan) {
1250                                                                         my $nopings = $tochan->user->nopings || 2;
1251                                                                         push @{$tochan->{pingtime}}, $t;
1252                                                                         shift @{$tochan->{pingtime}} if @{$tochan->{pingtime}} > 6;
1253
1254                                                                         # cope with a missed ping, this means you must set the pingint large enough
1255                                                                         if ($t > $tochan->{pingint}  && $t < 2 * $tochan->{pingint} ) {
1256                                                                                 $t -= $tochan->{pingint};
1257                                                                         }
1258
1259                                                                         # calc smoothed RTT a la TCP
1260                                                                         if (@{$tochan->{pingtime}} == 1) {
1261                                                                                 $tochan->{pingave} = $t;
1262                                                                         } else {
1263                                                                                 $tochan->{pingave} = $tochan->{pingave} + (($t - $tochan->{pingave}) / 6);
1264                                                                         }
1265                                                                         $tochan->{nopings} = $nopings; # pump up the timer
1266                                                                 }
1267                                                         }
1268                                                 }
1269                                         }
1270                                 }
1271                         } else {
1272                                 if (eph_dup($line)) {
1273                                         dbg("PCPROT: dup PC51 detected") if isdbg('chanerr');
1274                                         return;
1275                                 }
1276                                 # route down an appropriate thingy
1277                                 $self->route($to, $line);
1278                         }
1279                         return;
1280                 }
1281
1282                 if ($pcno == 75) {              # dunno but route it
1283                         my $call = $field[1];
1284                         if ($call ne $main::mycall) {
1285                                 $self->route($call, $line);
1286                         }
1287                         return;
1288                 }
1289
1290                 if ($pcno == 73) {  # WCY broadcasts
1291                         my $call = $field[1];
1292
1293                         # do some de-duping
1294                         my $d = cltounix($call, sprintf("%02d18Z", $field[2]));
1295                         if (($pcno == 23 && $d < $main::systime - $pc23_max_age) || $d > $main::systime + 1500 || $field[2] < 0 || $field[2] > 23) {
1296                                 dbg("PCPROT: WCY Date ($call $field[2]) out of range") if isdbg('chanerr');
1297                                 return;
1298                         }
1299                         @field = map { unpad($_) } @field;
1300                         if (WCY::dup($d)) {
1301                                 dbg("PCPROT: Dup WCY Spot ignored\n") if isdbg('chanerr');
1302                                 return;
1303                         }
1304
1305                         my $wcy = WCY::update($d, @field[2..12]);
1306
1307                         my $rep;
1308                         eval {
1309                                 $rep = Local::wcy($self, @field[1..12]);
1310                         };
1311                         # dbg("Local::wcy error $@") if isdbg('local') if $@;
1312                         return if $rep;
1313
1314                         # broadcast to the eager world
1315                         send_wcy_spot($self, $line, $d, @field[2..12]);
1316                         return;
1317                 }
1318
1319                 if ($pcno == 84) { # remote commands (incoming)
1320                         $self->process_rcmd($field[1], $field[2], $field[3], $field[4]);
1321                         return;
1322                 }
1323
1324                 if ($pcno == 85) {              # remote command replies
1325                         $self->process_rcmd_reply($field[1], $field[2], $field[3], $field[4]);
1326
1327                         return;
1328                 }
1329                 if ($pcno == 90) {              # new style PC16,17,19,21
1330                         return;
1331                 }
1332         }
1333
1334         # if get here then rebroadcast the thing with its Hop count decremented (if
1335         # there is one). If it has a hop count and it decrements to zero then don't
1336         # rebroadcast it.
1337         #
1338         # NOTE - don't arrive here UNLESS YOU WANT this lump of protocol to be
1339         #        REBROADCAST!!!!
1340         #
1341
1342         if (eph_dup($line)) {
1343                 dbg("PCPROT: Ephemeral dup, dropped") if isdbg('chanerr');
1344         } else {
1345                 unless ($self->{isolate}) {
1346                         DXChannel::broadcast_nodes($line, $self); # send it to everyone but me
1347                 }
1348         }
1349 }
1350
1351 #
1352 # This is called from inside the main cluster processing loop and is used
1353 # for despatching commands that are doing some long processing job
1354 #
1355 sub process
1356 {
1357         my $t = time;
1358         my @dxchan = DXChannel->get_all();
1359         my $dxchan;
1360         my $pc50s;
1361
1362         # send out a pc50 on EVERY channel all at once
1363         if ($t >= $last_pc50 + $DXProt::pc50_interval) {
1364                 $pc50s = pc50($main::me, scalar DXChannel::get_all_users);
1365                 eph_dup($pc50s);
1366                 $last_pc50 = $t;
1367         }
1368
1369         foreach $dxchan (@dxchan) {
1370                 next unless $dxchan->is_node();
1371                 next if $dxchan == $main::me;
1372
1373                 # send the pc50 or PC90
1374                 $dxchan->send($pc50s) if $pc50s;
1375
1376                 # send a ping out on this channel
1377                 if ($dxchan->{pingint} && $t >= $dxchan->{pingint} + $dxchan->{lastping}) {
1378                         if ($dxchan->{nopings} <= 0) {
1379                                 $dxchan->disconnect;
1380                         } else {
1381                                 addping($main::mycall, $dxchan->call);
1382                                 $dxchan->{nopings} -= 1;
1383                                 $dxchan->{lastping} = $t;
1384                         }
1385                 }
1386         }
1387
1388         # every ten seconds
1389         if ($t - $last10 >= 10) {
1390                 # clean out ephemera
1391
1392                 eph_clean();
1393
1394                 $last10 = $t;
1395         }
1396
1397         if ($main::systime - 3600 > $last_hour) {
1398                 $last_hour = $main::systime;
1399         }
1400 }
1401
1402 #
1403 # finish up a pc context
1404 #
1405
1406 #
1407 # some active measures
1408 #
1409
1410
1411 sub send_dx_spot
1412 {
1413         my $self = shift;
1414         my $line = shift;
1415         my @dxchan = DXChannel->get_all();
1416         my $dxchan;
1417
1418         # send it if it isn't the except list and isn't isolated and still has a hop count
1419         # taking into account filtering and so on
1420         foreach $dxchan (@dxchan) {
1421                 next if $dxchan == $main::me;
1422                 next if $dxchan == $self && $self->is_node;
1423                 $dxchan->dx_spot($line, $self->{isolate}, @_, $self->{call});
1424         }
1425 }
1426
1427 sub dx_spot
1428 {
1429         my $self = shift;
1430         my $line = shift;
1431         my $isolate = shift;
1432         my ($filter, $hops);
1433
1434         if ($self->{spotsfilter}) {
1435                 ($filter, $hops) = $self->{spotsfilter}->it(@_);
1436                 return unless $filter;
1437         }
1438         send_prot_line($self, $filter, $hops, $isolate, $line);
1439 }
1440
1441 sub send_prot_line
1442 {
1443         my ($self, $filter, $hops, $isolate, $line) = @_;
1444         my $routeit;
1445
1446         if ($hops) {
1447                 $routeit = $line;
1448                 $routeit =~ s/\^H\d+\^\~$/\^H$hops\^\~/;
1449         } else {
1450                 $routeit = adjust_hops($self, $line);  # adjust its hop count by node name
1451                 return unless $routeit;
1452         }
1453         if ($filter) {
1454                 $self->send($routeit);
1455         } else {
1456                 $self->send($routeit) unless $self->{isolate} || $isolate;
1457         }
1458 }
1459
1460
1461 sub send_wwv_spot
1462 {
1463         my $self = shift;
1464         my $line = shift;
1465         my @dxchan = DXChannel->get_all();
1466         my $dxchan;
1467         my ($wwv_dxcc, $wwv_itu, $wwv_cq, $org_dxcc, $org_itu, $org_cq) = (0..0);
1468         my @dxcc = Prefix::extract($_[6]);
1469         if (@dxcc > 0) {
1470                 $wwv_dxcc = $dxcc[1]->dxcc;
1471                 $wwv_itu = $dxcc[1]->itu;
1472                 $wwv_cq = $dxcc[1]->cq;
1473         }
1474         @dxcc = Prefix::extract($_[7]);
1475         if (@dxcc > 0) {
1476                 $org_dxcc = $dxcc[1]->dxcc;
1477                 $org_itu = $dxcc[1]->itu;
1478                 $org_cq = $dxcc[1]->cq;
1479         }
1480
1481         # send it if it isn't the except list and isn't isolated and still has a hop count
1482         # taking into account filtering and so on
1483         foreach $dxchan (@dxchan) {
1484                 next if $dxchan == $main::me;
1485                 next if $dxchan == $self && $self->is_node;
1486                 my $routeit;
1487                 my ($filter, $hops);
1488
1489                 $dxchan->wwv($line, $self->{isolate}, @_, $self->{call}, $wwv_dxcc, $wwv_itu, $wwv_cq, $org_dxcc, $org_itu, $org_cq);
1490         }
1491
1492 }
1493
1494 sub wwv
1495 {
1496         my $self = shift;
1497         my $line = shift;
1498         my $isolate = shift;
1499         my ($filter, $hops);
1500
1501         if ($self->{wwvfilter}) {
1502                 ($filter, $hops) = $self->{wwvfilter}->it(@_);
1503                 return unless $filter;
1504         }
1505         send_prot_line($self, $filter, $hops, $isolate, $line)
1506 }
1507
1508 sub send_wcy_spot
1509 {
1510         my $self = shift;
1511         my $line = shift;
1512         my @dxchan = DXChannel->get_all();
1513         my $dxchan;
1514         my ($wcy_dxcc, $wcy_itu, $wcy_cq, $org_dxcc, $org_itu, $org_cq) = (0..0);
1515         my @dxcc = Prefix::extract($_[10]);
1516         if (@dxcc > 0) {
1517                 $wcy_dxcc = $dxcc[1]->dxcc;
1518                 $wcy_itu = $dxcc[1]->itu;
1519                 $wcy_cq = $dxcc[1]->cq;
1520         }
1521         @dxcc = Prefix::extract($_[11]);
1522         if (@dxcc > 0) {
1523                 $org_dxcc = $dxcc[1]->dxcc;
1524                 $org_itu = $dxcc[1]->itu;
1525                 $org_cq = $dxcc[1]->cq;
1526         }
1527
1528         # send it if it isn't the except list and isn't isolated and still has a hop count
1529         # taking into account filtering and so on
1530         foreach $dxchan (@dxchan) {
1531                 next if $dxchan == $main::me;
1532                 next if $dxchan == $self;
1533
1534                 $dxchan->wcy($line, $self->{isolate}, @_, $self->{call}, $wcy_dxcc, $wcy_itu, $wcy_cq, $org_dxcc, $org_itu, $org_cq);
1535         }
1536 }
1537
1538 sub wcy
1539 {
1540         my $self = shift;
1541         my $line = shift;
1542         my $isolate = shift;
1543         my ($filter, $hops);
1544
1545         if ($self->{wcyfilter}) {
1546                 ($filter, $hops) = $self->{wcyfilter}->it(@_);
1547                 return unless $filter;
1548         }
1549         send_prot_line($self, $filter, $hops, $isolate, $line) if $self->is_clx || $self->is_spider || $self->is_dxnet;
1550 }
1551
1552 # send an announce
1553 sub send_announce
1554 {
1555         my $self = shift;
1556         my $line = shift;
1557         my @dxchan = DXChannel->get_all();
1558         my $dxchan;
1559         my $target;
1560         my $to = 'To ';
1561         my $text = unpad($_[2]);
1562
1563         if ($_[3] eq '*') {     # sysops
1564                 $target = "SYSOP";
1565         } elsif ($_[3] gt ' ') { # speciality list handling
1566                 my ($name) = split /\./, $_[3];
1567                 $target = "$name"; # put the rest in later (if bothered)
1568         }
1569
1570         if ($_[5] eq '1') {
1571                 $target = "WX";
1572                 $to = '';
1573         }
1574         $target = "ALL" if !$target;
1575
1576
1577         # obtain country codes etc
1578         my ($ann_dxcc, $ann_itu, $ann_cq, $org_dxcc, $org_itu, $org_cq) = (0..0);
1579         my ($ann_state, $org_state) = ("", "");
1580         my @dxcc = Prefix::extract($_[0]);
1581         if (@dxcc > 0) {
1582                 $ann_dxcc = $dxcc[1]->dxcc;
1583                 $ann_itu = $dxcc[1]->itu;
1584                 $ann_cq = $dxcc[1]->cq;
1585                 $ann_state = $dxcc[1]->state;
1586         }
1587         @dxcc = Prefix::extract($_[4]);
1588         if (@dxcc > 0) {
1589                 $org_dxcc = $dxcc[1]->dxcc;
1590                 $org_itu = $dxcc[1]->itu;
1591                 $org_cq = $dxcc[1]->cq;
1592                 $org_state = $dxcc[1]->state;
1593         }
1594
1595         if ($self->{inannfilter}) {
1596                 my ($filter, $hops) =
1597                         $self->{inannfilter}->it(@_, $self->{call},
1598                                                                          $ann_dxcc, $ann_itu, $ann_cq,
1599                                                                          $org_dxcc, $org_itu, $org_cq, $ann_state, $org_state);
1600                 unless ($filter) {
1601                         dbg("PCPROT: Rejected by input announce filter") if isdbg('chanerr');
1602                         return;
1603                 }
1604         }
1605
1606         if (AnnTalk::dup($_[0], $_[1], $_[2])) {
1607                 dbg("PCPROT: Duplicate Announce ignored") if isdbg('chanerr');
1608                 return;
1609         }
1610
1611         Log('ann', $target, $_[0], $text);
1612
1613         # send it if it isn't the except list and isn't isolated and still has a hop count
1614         # taking into account filtering and so on
1615         foreach $dxchan (@dxchan) {
1616                 next if $dxchan == $main::me;
1617                 next if $dxchan == $self && $self->is_node;
1618                 $dxchan->announce($line, $self->{isolate}, $to, $target, $text, @_, $self->{call}, $ann_dxcc, $ann_itu, $ann_cq, $org_dxcc, $org_itu, $org_cq);
1619         }
1620 }
1621
1622 sub announce
1623 {
1624         my $self = shift;
1625         my $line = shift;
1626         my $isolate = shift;
1627         my $to = shift;
1628         my $target = shift;
1629         my $text = shift;
1630         my ($filter, $hops);
1631
1632         if ($self->{annfilter}) {
1633                 ($filter, $hops) = $self->{annfilter}->it(@_);
1634                 return unless $filter;
1635         }
1636         send_prot_line($self, $filter, $hops, $isolate, $line) unless $_[1] eq $main::mycall;
1637 }
1638
1639
1640 sub send_local_config
1641 {
1642         my $self = shift;
1643         my $node;
1644         my @nodes;
1645         my @localnodes;
1646         my @remotenodes;
1647
1648         dbg('DXProt::send_local_config') if isdbg('trace');
1649
1650         # send our nodes
1651         if ($self->{isolate}) {
1652                 @localnodes = ( $main::routeroot );
1653         } else {
1654                 # create a list of all the nodes that are not connected to this connection
1655                 # and are not themselves isolated, this to make sure that isolated nodes
1656         # don't appear outside of this node
1657                 my @dxchan = grep { $_->call ne $main::mycall && $_ != $self && !$_->{isolate} } DXChannel::get_all_nodes();
1658                 @localnodes = map { my $r = Route::Node::get($_->{call}); $r ? $r : () } @dxchan if @dxchan;
1659                 my @intcalls = map { $_->nodes } @localnodes if @localnodes;
1660                 my $ref = Route::Node::get($self->{call});
1661                 my @rnodes = $ref->nodes;
1662                 for my $node (@intcalls) {
1663                         push @remotenodes, Route::Node::get($node) unless grep $node eq $_, @rnodes;
1664                 }
1665                 unshift @localnodes, $main::routeroot;
1666         }
1667
1668
1669         $self->send_route(\&pc19, scalar(@localnodes)+scalar(@remotenodes), @localnodes, @remotenodes);
1670
1671         # get all the users connected on the above nodes and send them out
1672         foreach $node (@localnodes, @remotenodes) {
1673                 if ($node) {
1674                         my @rout = map {my $r = Route::User::get($_); $r ? ($r) : ()} $node->users;
1675                         $self->send_route(\&pc16, 1, $node, @rout) if @rout && $self->user->wantsendpc16;
1676                 } else {
1677                         dbg("sent a null value") if isdbg('chanerr');
1678                 }
1679         }
1680 }
1681
1682 #
1683 # route a message down an appropriate interface for a callsign
1684 #
1685 # is called route(to, pcline);
1686 #
1687 sub route
1688 {
1689         my ($self, $call, $line) = @_;
1690
1691         if (ref $self && $call eq $self->{call}) {
1692                 dbg("PCPROT: Trying to route back to source, dropped") if isdbg('chanerr');
1693                 return;
1694         }
1695
1696         # always send it down the local interface if available
1697         my $dxchan = DXChannel->get($call);
1698         unless ($dxchan) {
1699                 my $cl = Route::get($call);
1700                 $dxchan = $cl->dxchan if $cl;
1701                 if (ref $dxchan) {
1702                         if (ref $self && $dxchan eq $self) {
1703                                 dbg("PCPROT: Trying to route back to source, dropped") if isdbg('chanerr');
1704                                 return;
1705                         }
1706                 }
1707         }
1708         if ($dxchan) {
1709                 my $routeit = adjust_hops($dxchan, $line);   # adjust its hop count by node name
1710                 if ($routeit) {
1711                         $dxchan->send($routeit) unless $dxchan == $main::me;
1712                 }
1713         } else {
1714                 dbg("PCPROT: No route available, dropped") if isdbg('chanerr');
1715         }
1716 }
1717
1718 #
1719 # obtain the hops from the list for this callsign and pc no
1720 #
1721
1722 sub get_hops
1723 {
1724         my $pcno = shift;
1725         my $hops = $DXProt::hopcount{$pcno};
1726         $hops = $DXProt::def_hopcount if !$hops;
1727         return "H$hops";
1728 }
1729
1730 #
1731 # adjust the hop count on a per node basis using the user loadable
1732 # hop table if available or else decrement an existing one
1733 #
1734
1735 sub adjust_hops
1736 {
1737         my $self = shift;
1738         my $s = shift;
1739         my $call = $self->{call};
1740         my $hops;
1741
1742         if (($hops) = $s =~ /\^H(\d+)\^~?$/o) {
1743                 my ($pcno) = $s =~ /^PC(\d\d)/o;
1744                 confess "$call called adjust_hops with '$s'" unless $pcno;
1745                 my $ref = $nodehops{$call} if %nodehops;
1746                 if ($ref) {
1747                         my $newhops = $ref->{$pcno};
1748                         return "" if defined $newhops && $newhops == 0;
1749                         $newhops = $ref->{default} unless $newhops;
1750                         return "" if defined $newhops && $newhops == 0;
1751                         $newhops = $hops if !$newhops;
1752                         $s =~ s/\^H(\d+)(\^~?)$/\^H$newhops$2/ if $newhops;
1753                 } else {
1754                         # simply decrement it
1755                         $hops--;
1756                         return "" if !$hops;
1757                         $s =~ s/\^H(\d+)(\^~?)$/\^H$hops$2/ if $hops;
1758                 }
1759         }
1760         return $s;
1761 }
1762
1763 #
1764 # load hop tables
1765 #
1766 sub load_hops
1767 {
1768         my $self = shift;
1769         return $self->msg('lh1') unless -e "$main::data/hop_table.pl";
1770         do "$main::data/hop_table.pl";
1771         return $@ if $@;
1772         return ();
1773 }
1774
1775
1776 # add a ping request to the ping queues
1777 sub addping
1778 {
1779         my ($from, $to) = @_;
1780         my $ref = $pings{$to} || [];
1781         my $r = {};
1782         $r->{call} = $from;
1783         $r->{t} = [ gettimeofday ];
1784         route(undef, $to, pc51($to, $main::mycall, 1));
1785         push @$ref, $r;
1786         $pings{$to} = $ref;
1787 }
1788
1789 sub process_rcmd
1790 {
1791         my ($self, $tonode, $fromnode, $user, $cmd) = @_;
1792         if ($tonode eq $main::mycall) {
1793                 my $ref = DXUser->get_current($fromnode);
1794                 my $cref = Route::Node::get($fromnode);
1795                 Log('rcmd', 'in', $ref->{priv}, $fromnode, $cmd);
1796                 if ($cmd !~ /^\s*rcmd/i && $cref && $ref && $cref->call eq $ref->homenode) { # not allowed to relay RCMDS!
1797                         if ($ref->{priv}) {             # you have to have SOME privilege, the commands have further filtering
1798                                 $self->{remotecmd} = 1; # for the benefit of any command that needs to know
1799                                 my $oldpriv = $self->{priv};
1800                                 $self->{priv} = $ref->{priv}; # assume the user's privilege level
1801                                 my @in = (DXCommandmode::run_cmd($self, $cmd));
1802                                 $self->{priv} = $oldpriv;
1803                                 $self->send_rcmd_reply($main::mycall, $fromnode, $user, @in);
1804                                 delete $self->{remotecmd};
1805                         } else {
1806                                 $self->send_rcmd_reply($main::mycall, $fromnode, $user, "sorry...!");
1807                         }
1808                 } else {
1809                         $self->send_rcmd_reply($main::mycall, $fromnode, $user, "your attempt is logged, Tut tut tut...!");
1810                 }
1811         } else {
1812                 my $ref = DXUser->get_current($tonode);
1813                 if ($ref && $ref->is_clx) {
1814                         $self->route($tonode, pc84($fromnode, $tonode, $user, $cmd));
1815                 } else {
1816                         $self->route($tonode, pc34($fromnode, $tonode, $cmd));
1817                 }
1818         }
1819 }
1820
1821 sub process_rcmd_reply
1822 {
1823         my ($self, $tonode, $fromnode, $user, $line) = @_;
1824         if ($tonode eq $main::mycall) {
1825                 my $s = $rcmds{$fromnode};
1826                 if ($s) {
1827                         my $dxchan = DXChannel->get($s->{call});
1828                         my $ref = $user eq $tonode ? $dxchan : (DXChannel->get($user) || $dxchan);
1829                         $ref->send($line) if $ref;
1830                         delete $rcmds{$fromnode} if !$dxchan;
1831                 } else {
1832                         # send unsolicited ones to the sysop
1833                         my $dxchan = DXChannel->get($main::myalias);
1834                         $dxchan->send($line) if $dxchan;
1835                 }
1836         } else {
1837                 my $ref = DXUser->get_current($tonode);
1838                 if ($ref && $ref->is_clx) {
1839                         $self->route($tonode, pc85($fromnode, $tonode, $user, $line));
1840                 } else {
1841                         $self->route($tonode, pc35($fromnode, $tonode, $line));
1842                 }
1843         }
1844 }
1845
1846 sub send_rcmd_reply
1847 {
1848         my $self = shift;
1849         my $tonode = shift;
1850         my $fromnode = shift;
1851         my $user = shift;
1852         while (@_) {
1853                 my $line = shift;
1854                 $line =~ s/\s*$//;
1855                 Log('rcmd', 'out', $fromnode, $line);
1856                 if ($self->is_clx) {
1857                         $self->send(pc85($main::mycall, $fromnode, $user, "$main::mycall:$line"));
1858                 } else {
1859                         $self->send(pc35($main::mycall, $fromnode, "$main::mycall:$line"));
1860                 }
1861         }
1862 }
1863
1864 # add a rcmd request to the rcmd queues
1865 sub addrcmd
1866 {
1867         my ($self, $to, $cmd) = @_;
1868
1869         my $r = {};
1870         $r->{call} = $self->{call};
1871         $r->{t} = $main::systime;
1872         $r->{cmd} = $cmd;
1873         $rcmds{$to} = $r;
1874
1875         my $ref = Route::Node::get($to);
1876         my $dxchan = $ref->dxchan;
1877         if ($dxchan && $dxchan->is_clx) {
1878                 route(undef, $to, pc84($main::mycall, $to, $self->{call}, $cmd));
1879         } else {
1880                 route(undef, $to, pc34($main::mycall, $to, $cmd));
1881         }
1882 }
1883
1884 sub disconnect
1885 {
1886         my $self = shift;
1887         my $pc39flag = shift;
1888         my $call = $self->call;
1889
1890         return if $self->{disconnecting}++;
1891
1892         unless ($pc39flag && $pc39flag == 1) {
1893                 $self->send_now("D", DXProt::pc39($main::mycall, $self->msg('disc1', "System Op")));
1894         }
1895
1896         # get rid of any PC16/17/19/21s
1897         eph_del_regex("^PC(?:1[679]|21).*$call");
1898
1899         # do routing stuff, remove me from routing table
1900         my $node = Route::Node::get($call);
1901         my @rout;
1902         if ($node) {
1903                 @rout = $node->del($main::routeroot);
1904
1905                 # and all my ephemera as well
1906                 for (@rout) {
1907                         my $c = $_->call;
1908                         eph_del_regex("^PC(?:1[679]|21).*$c");
1909                 }
1910         }
1911
1912         # remove them from the pc19list as well
1913         while (my ($k,$v) = each %pc19list) {
1914                 my @l = grep {$_->[0] ne $call} @{$pc19list{$k}};
1915                 if (@l) {
1916                         $pc19list{$k} = \@l;
1917                 } else {
1918                         delete $pc19list{$k};
1919                 }
1920
1921                 # and the ephemera
1922                 eph_del_regex("^PC(?:1[679]|21).*$k");
1923         }
1924
1925         # unbusy and stop and outgoing mail
1926         my $mref = DXMsg::get_busy($call);
1927         $mref->stop_msg($call) if $mref;
1928
1929         # broadcast to all other nodes that all the nodes connected to via me are gone
1930         unless ($pc39flag && $pc39flag == 2) {
1931                 $self->route_pc21(@rout) if @rout;
1932         }
1933
1934         # remove outstanding pings
1935         delete $pings{$call};
1936
1937         # I was the last node visited
1938     $self->user->node($main::mycall);
1939
1940         # send info to all logged in thingies
1941         $self->tell_login('logoutn');
1942
1943         Log('DXProt', $call . " Disconnected");
1944
1945         $self->SUPER::disconnect;
1946 }
1947
1948
1949 #
1950 # send a talk message to this thingy
1951 #
1952 sub talk
1953 {
1954         my ($self, $from, $to, $via, $line, $origin) = @_;
1955
1956         $line =~ s/\^/\\5E/g;                   # remove any ^ characters
1957         $self->send(DXProt::pc10($from, $to, $via, $line, $origin));
1958         Log('talk', $to, $from, $via?$via:$self->call, $line) unless $origin && $origin ne $main::mycall;
1959 }
1960
1961 # send it if it isn't the except list and isn't isolated and still has a hop count
1962 # taking into account filtering and so on
1963 sub send_route
1964 {
1965         my $self = shift;
1966         my $generate = shift;
1967         my $no = shift;     # the no of things to filter on
1968         my $routeit;
1969         my ($filter, $hops);
1970         my @rin;
1971
1972         for (; @_ && $no; $no--) {
1973                 my $r = shift;
1974
1975                 if (!$self->{isolate} && $self->{routefilter}) {
1976                         $filter = undef;
1977                         if ($r) {
1978                                 ($filter, $hops) = $self->{routefilter}->it($self->{call}, $self->{dxcc}, $self->{itu}, $self->{cq}, $r->call, $r->dxcc, $r->itu, $r->cq, $self->{state}, $r->{state});
1979                                 if ($filter) {
1980                                         push @rin, $r;
1981                                 } else {
1982                                         dbg("DXPROT: $self->{call}/" . $r->call . " rejected by output filter") if isdbg('chanerr');
1983                                 }
1984                         } else {
1985                                 dbg("was sent a null value") if isdbg('chanerr');
1986                         }
1987                 } else {
1988                         push @rin, $r unless $self->{isolate} && $r->call ne $main::mycall;
1989                 }
1990         }
1991         if (@rin) {
1992                 foreach my $line (&$generate(@rin, @_)) {
1993                         if ($hops) {
1994                                 $routeit = $line;
1995                                 $routeit =~ s/\^H\d+\^\~$/\^H$hops\^\~/;
1996                         } else {
1997                                 $routeit = adjust_hops($self, $line);  # adjust its hop count by node name
1998                                 next unless $routeit;
1999                         }
2000                         $self->send($routeit);
2001                 }
2002         }
2003 }
2004
2005 sub broadcast_route
2006 {
2007         my $self = shift;
2008         my $generate = shift;
2009         my @dxchan = DXChannel::get_all_nodes();
2010         my $dxchan;
2011         my $line;
2012
2013         unless ($self->{isolate}) {
2014                 foreach $dxchan (@dxchan) {
2015                         next if $dxchan == $self;
2016                         next if $dxchan == $main::me;
2017                         next if $dxchan->user->wantnp;
2018                         next if ($generate == \&pc16 || $generate==\&pc17) && !$dxchan->user->wantsendpc16;
2019
2020                         $dxchan->send_route($generate, @_);
2021                 }
2022         }
2023 }
2024
2025 sub route_pc16
2026 {
2027         my $self = shift;
2028         return unless $self->user->wantpc16;
2029         broadcast_route($self, \&pc16, 1, @_);
2030 }
2031
2032 sub route_pc17
2033 {
2034         my $self = shift;
2035         return unless $self->user->wantpc16;
2036         broadcast_route($self, \&pc17, 1, @_);
2037 }
2038
2039 sub route_pc19
2040 {
2041         my $self = shift;
2042         broadcast_route($self, \&pc19, scalar @_, @_);
2043 }
2044
2045 sub route_pc21
2046 {
2047         my $self = shift;
2048         broadcast_route($self, \&pc21, scalar @_, @_);
2049 }
2050
2051 sub route_pc24
2052 {
2053         my $self = shift;
2054         broadcast_route($self, \&pc24, 1, @_);
2055 }
2056
2057 sub route_pc41
2058 {
2059         my $self = shift;
2060         broadcast_route($self, \&pc41, 1, @_);
2061 }
2062
2063 sub route_pc50
2064 {
2065         my $self = shift;
2066         broadcast_route($self, \&pc50, 1, @_);
2067 }
2068
2069 sub route_pc90
2070 {
2071         my $self = shift;
2072         broadcast_route($self, \&pc90, 1, @_);
2073 }
2074
2075 sub in_filter_route
2076 {
2077         my $self = shift;
2078         my $r = shift;
2079         my ($filter, $hops) = (1, 1);
2080
2081         if ($self->{inroutefilter}) {
2082                 ($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);
2083                 dbg("PCPROT: $self->{call}/" . $r->call . ' rejected by in_filter_route') if !$filter && isdbg('chanerr');
2084         }
2085         return $filter;
2086 }
2087
2088 sub eph_dup
2089 {
2090         my $s = shift;
2091         my $t = shift || $eph_restime;
2092         my $r;
2093
2094         # chop the end off
2095         $s =~ s/\^H\d\d?\^?\~?$//;
2096         $r = 1 if exists $eph{$s};    # pump up the dup if it keeps circulating
2097         $eph{$s} = $main::systime + $t;
2098         return $r;
2099 }
2100
2101 sub eph_del_regex
2102 {
2103         my $regex = shift;
2104         my ($key, $val);
2105         while (($key, $val) = each %eph) {
2106                 if ($key =~ m{$regex}) {
2107                         delete $eph{$key};
2108                 }
2109         }
2110 }
2111
2112 sub eph_clean
2113 {
2114         my ($key, $val);
2115
2116         while (($key, $val) = each %eph) {
2117                 if ($main::systime >= $val) {
2118                         delete $eph{$key};
2119                 }
2120         }
2121 }
2122
2123 sub eph_list
2124 {
2125         my ($key, $val);
2126         my @out;
2127
2128         while (($key, $val) = each %eph) {
2129                 push @out, $key, $val;
2130         }
2131         return @out;
2132 }
2133
2134 sub run_cmd
2135 {
2136         goto &DXCommandmode::run_cmd;
2137 }
2138 1;
2139 __END__