perl/DXProt.pm

   1 #!/usr/bin/perl
   2 #
   3 # This module impliments the protocal mode for a dx cluster
   4 #
   5 # Copyright (c) 1998 Dirk Koopman G1TLH
   6 #
   7 # $Id$
   8 #
   9
  10 package DXProt;
  11
  12 @ISA = qw(DXChannel);
  13
  14 use DXUtil;
  15 use DXChannel;
  16 use DXUser;
  17 use DXM;
  18 use DXProtVars;
  19 use DXCommandmode;
  20 use DXLog;
  21 use Spot;
  22 use DXProtout;
  23 use DXDebug;
  24 use Filter;
  25 use Local;
  26 use DXDb;
  27 use AnnTalk;
  28 use Geomag;
  29 use WCY;
  30 use Time::HiRes qw(gettimeofday tv_interval);
  31 use BadWords;
  32 use DXHash;
  33 use Route;
  34 use Route::Node;
  35 use Script;
  36
  37 use strict;
  38
  39 use vars qw($VERSION $BRANCH);
  40 $VERSION = sprintf( "%d.%03d", q$Revision$ =~ /(\d+)\.(\d+)/ );
  41 $BRANCH = sprintf( "%d.%03d", q$Revision$ =~ /\d+\.\d+\.(\d+)\.(\d+)/  || (0,0));
  42 $main::build += $VERSION;
  43 $main::branch += $BRANCH;
  44
  45 use vars qw($pc11_max_age $pc23_max_age $last_pc50 $eph_restime $eph_info_restime $eph_pc34_restime
  46                         $last_hour $last10 %eph  %pings %rcmds $ann_to_talk
  47                         $pingint $obscount %pc19list
  48                         %nodehops $baddx $badspotter $badnode $censorpc $rspfcheck
  49                         $allowzero $decode_dk0wcy $send_opernam @checklist);
  50
  51 $pc11_max_age = 1*3600;                 # the maximum age for an incoming 'real-time' pc11
  52 $pc23_max_age = 1*3600;                 # the maximum age for an incoming 'real-time' pc23
  53
  54 $last_hour = time;                              # last time I did an hourly periodic update
  55 %pings = ();                    # outstanding ping requests outbound
  56 %rcmds = ();                    # outstanding rcmd requests outbound
  57 %nodehops = ();                 # node specific hop control
  58 %pc19list = ();                                 # list of outstanding PC19s that haven't had PC16s on them
  59
  60 $censorpc = 1;                                  # Do a BadWords::check on text fields and reject things
  61                                                                 # loads of 'bad things'
  62 $baddx = new DXHash "baddx";
  63 $badspotter = new DXHash "badspotter";
  64 $badnode = new DXHash "badnode";
  65 $last10 = $last_pc50 = time;
  66 $ann_to_talk = 1;
  67 $rspfcheck = 1;
  68 $eph_restime = 180;
  69 $eph_info_restime = 60*60;
  70 $eph_pc34_restime = 30;
  71 $pingint = 5*60;
  72 $obscount = 2;
  73
  74 @checklist =
  75 (
  76  [ qw(c c m bp bc c) ],                 # pc10
  77  [ qw(f m d t m c c h) ],               # pc11
  78  [ qw(c bc m bp bm p h) ],              # pc12
  79  [ qw(c h) ],                                   #
  80  [ qw(c h) ],                                   #
  81  [ qw(c m h) ],                                 #
  82  undef ,                                                # pc16 has to be validated manually
  83  [ qw(c c h) ],                                 # pc17
  84  [ qw(m n) ],                                   # pc18
  85  undef ,                                                # pc19 has to be validated manually
  86  undef ,                                                # pc20 no validation
  87  [ qw(c m h) ],                                 # pc21
  88  undef ,                                                # pc22 no validation
  89  [ qw(d n n n n m c c h) ],             # pc23
  90  [ qw(c p h) ],                                 # pc24
  91  [ qw(c c n n) ],                               # pc25
  92  [ qw(f m d t m c c bc) ],              # pc26
  93  [ qw(d n n n n m c c bc) ],    # pc27
  94  [ qw(c c m c d t p m bp n p bp bc) ], # pc28
  95  [ qw(c c n m) ],                               # pc29
  96  [ qw(c c n) ],                                 # pc30
  97  [ qw(c c n) ],                                 # pc31
  98  [ qw(c c n) ],                                 # pc32
  99  [ qw(c c n) ],                                 # pc33
 100  [ qw(c c m) ],                                 # pc34
 101  [ qw(c c m) ],                                 # pc35
 102  [ qw(c c m) ],                                 # pc36
 103  [ qw(c c n m) ],                               # pc37
 104  undef,                                                 # pc38 not interested
 105  [ qw(c m) ],                                   # pc39
 106  [ qw(c c m p n) ],                             # pc40
 107  [ qw(c n m h) ],                               # pc41
 108  [ qw(c c n) ],                                 # pc42
 109  undef,                                                 # pc43 don't handle it
 110  [ qw(c c n m m c) ],                   # pc44
 111  [ qw(c c n m) ],                               # pc45
 112  [ qw(c c n) ],                                 # pc46
 113  undef,                                                 # pc47
 114  undef,                                                 # pc48
 115  [ qw(c m h) ],                                 # pc49
 116  [ qw(c n h) ],                                 # pc50
 117  [ qw(c c n) ],                                 # pc51
 118  undef,
 119  undef,
 120  undef,
 121  undef,
 122  undef,
 123  undef,
 124  undef,
 125  undef,
 126  undef,                                                 # pc60
 127  undef,
 128  undef,
 129  undef,
 130  undef,
 131  undef,
 132  undef,
 133  undef,
 134  undef,
 135  undef,
 136  undef,                                                 # pc70
 137  undef,
 138  undef,
 139  [ qw(d n n n n n n m m m c c h) ],     # pc73
 140  undef,
 141  undef,
 142  undef,
 143  undef,
 144  undef,
 145  undef,
 146  undef,                                                 # pc80
 147  undef,
 148  undef,
 149  undef,
 150  [ qw(c c c m) ],                               # pc84
 151  [ qw(c c c m) ],                               # pc85
 152 );
 153
 154 # use the entry in the check list to check the field list presented
 155 # return OK if line NOT in check list (for now)
 156 sub check
 157 {
 158         my $n = shift;
 159         $n -= 10;
 160         return 0 if $n < 0 || $n > @checklist;
 161         my $ref = $checklist[$n];
 162         return 0 unless ref $ref;
 163
 164         my $i;
 165         shift;    # not interested in the first field
 166         for ($i = 0; $i < @$ref; $i++) {
 167                 my ($blank, $act) = $$ref[$i] =~ /^(b?)(\w)$/;
 168                 return 0 unless $act;
 169                 next if $blank && $_[$i] =~ /^[ \*]$/;
 170                 if ($act eq 'c') {
 171                         return $i+1 unless is_callsign($_[$i]);
 172                 } elsif ($act eq 'm') {
 173                         return $i+1 unless is_pctext($_[$i]);
 174                 } elsif ($act eq 'p') {
 175                         return $i+1 unless is_pcflag($_[$i]);
 176                 } elsif ($act eq 'f') {
 177                         return $i+1 unless is_freq($_[$i]);
 178                 } elsif ($act eq 'n') {
 179                         return $i+1 unless $_[$i] =~ /^[\d ]+$/;
 180                 } elsif ($act eq 'h') {
 181                         return $i+1 unless $_[$i] =~ /^H\d\d?$/;
 182                 } elsif ($act eq 'd') {
 183                         return $i+1 unless $_[$i] =~ /^\s*\d+-\w\w\w-[12][90]\d\d$/;
 184                 } elsif ($act eq 't') {
 185                         return $i+1 unless $_[$i] =~ /^[012]\d[012345]\dZ$/;
 186                 }
 187         }
 188         return 0;
 189 }
 190
 191 sub init
 192 {
 193         do "$main::data/hop_table.pl" if -e "$main::data/hop_table.pl";
 194         confess $@ if $@;
 195 }
 196
 197 #
 198 # obtain a new connection this is derived from dxchannel
 199 #
 200
 201 sub new
 202 {
 203         my $self = DXChannel::alloc(@_);
 204
 205         # add this node to the table, the values get filled in later
 206         my $pkg = shift;
 207         my $call = shift;
 208         $main::routeroot->add($call, '5000', Route::here(1)) if $call ne $main::mycall;
 209
 210         return $self;
 211 }
 212
 213 # this is how a pc connection starts (for an incoming connection)
 214 # issue a PC38 followed by a PC18, then wait for a PC20 (remembering
 215 # all the crap that comes between).
 216 sub start
 217 {
 218         my ($self, $line, $sort) = @_;
 219         my $call = $self->{call};
 220         my $user = $self->{user};
 221
 222         # log it
 223         my $host = $self->{conn}->{peerhost} || "unknown";
 224         Log('DXProt', "$call connected from $host");
 225
 226         # remember type of connection
 227         $self->{consort} = $line;
 228         $self->{outbound} = $sort eq 'O';
 229         my $priv = $user->priv;
 230         $priv = $user->priv(1) unless $priv;
 231         $self->{priv} = $priv;     # other clusters can always be 'normal' users
 232         $self->{lang} = $user->lang || 'en';
 233         $self->{isolate} = $user->{isolate};
 234         $self->{consort} = $line;       # save the connection type
 235         $self->{here} = 1;
 236         $self->{width} = 80;
 237
 238         # sort out registration
 239         $self->{registered} = 1;
 240
 241         # get the output filters
 242         $self->{spotsfilter} = Filter::read_in('spots', $call, 0) || Filter::read_in('spots', 'node_default', 0);
 243         $self->{wwvfilter} = Filter::read_in('wwv', $call, 0) || Filter::read_in('wwv', 'node_default', 0);
 244         $self->{wcyfilter} = Filter::read_in('wcy', $call, 0) || Filter::read_in('wcy', 'node_default', 0);
 245         $self->{annfilter} = Filter::read_in('ann', $call, 0) || Filter::read_in('ann', 'node_default', 0) ;
 246         $self->{routefilter} = Filter::read_in('route', $call, 0) || Filter::read_in('route', 'node_default', 0) unless $self->{isolate} ;
 247
 248
 249         # get the INPUT filters (these only pertain to Clusters)
 250         $self->{inspotsfilter} = Filter::read_in('spots', $call, 1) || Filter::read_in('spots', 'node_default', 1);
 251         $self->{inwwvfilter} = Filter::read_in('wwv', $call, 1) || Filter::read_in('wwv', 'node_default', 1);
 252         $self->{inwcyfilter} = Filter::read_in('wcy', $call, 1) || Filter::read_in('wcy', 'node_default', 1);
 253         $self->{inannfilter} = Filter::read_in('ann', $call, 1) || Filter::read_in('ann', 'node_default', 1);
 254         $self->{inroutefilter} = Filter::read_in('route', $call, 1) || Filter::read_in('route', 'node_default', 1) unless $self->{isolate};
 255
 256         # set unbuffered and no echo
 257         $self->send_now('B',"0");
 258         $self->send_now('E',"0");
 259         $self->conn->echo(0) if $self->conn->can('echo');
 260
 261         # ping neighbour node stuff
 262         my $ping = $user->pingint;
 263         $ping = $pingint unless defined $ping;
 264         $self->{pingint} = $ping;
 265         $self->{nopings} = $user->nopings || $obscount;
 266         $self->{pingtime} = [ ];
 267         $self->{pingave} = 999;
 268         $self->{metric} ||= 100;
 269         $self->{lastping} = $main::systime;
 270
 271         # send initialisation string
 272         unless ($self->{outbound}) {
 273                 $self->sendinit;
 274         }
 275
 276         $self->state('init');
 277         $self->{pc50_t} = $main::systime;
 278
 279         # send info to all logged in thingies
 280         $self->tell_login('loginn');
 281
 282         # run a script send the output to the debug file
 283         my $script = new Script(lc $call) || new Script('node_default');
 284         $script->run($self) if $script;
 285 }
 286
 287 #
 288 # send outgoing 'challenge'
 289 #
 290
 291 sub sendinit
 292 {
 293         my $self = shift;
 294         $self->send(pc18());
 295 }
 296
 297 #
 298 # This is the normal pcxx despatcher
 299 #
 300 sub normal
 301 {
 302         my ($self, $line) = @_;
 303         my @field = split /\^/, $line;
 304         return unless @field;
 305
 306         pop @field if $field[-1] eq '~';
 307
 308 #       print join(',', @field), "\n";
 309
 310
 311         # process PC frames, this will fail unless the frame starts PCnn
 312         my ($pcno) = $field[0] =~ /^PC(\d\d)/; # just get the number
 313         return unless $pcno;
 314         return if $pcno < 10 || $pcno > 99;
 315
 316         # check for and dump bad protocol messages
 317         my $n = check($pcno, @field);
 318         if ($n) {
 319                 dbg("PCPROT: bad field $n, dumped (" . parray($checklist[$pcno-10]) . ")") if isdbg('chanerr');
 320                 return;
 321         }
 322
 323         # local processing 1
 324         my $pcr;
 325         eval {
 326                 $pcr = Local::pcprot($self, $pcno, @field);
 327         };
 328 #       dbg("Local::pcprot error $@") if isdbg('local') if $@;
 329         return if $pcr;
 330
 331  SWITCH: {
 332                 if ($pcno == 10) {              # incoming talk
 333
 334                         # rsfp check
 335                         return if $rspfcheck and !$self->rspfcheck(0, $field[6], $field[1]);
 336
 337                         # will we allow it at all?
 338                         if ($censorpc) {
 339                                 my @bad;
 340                                 if (@bad = BadWords::check($field[3])) {
 341                                         dbg("PCPROT: Bad words: @bad, dropped") if isdbg('chanerr');
 342                                         return;
 343                                 }
 344                         }
 345
 346                         # is it for me or one of mine?
 347                         my ($from, $to, $via, $call, $dxchan);
 348                         $from = $field[1];
 349                         if ($field[5] gt ' ') {
 350                                 $via = $field[2];
 351                                 $to = $field[5];
 352                         } else {
 353                                 $to = $field[2];
 354                         }
 355
 356                         # if this is a 'nodx' node then ignore it
 357                         if ($badnode->in($field[6]) || ($via && $badnode->in($via))) {
 358                                 dbg("PCPROT: Bad Node, dropped") if isdbg('chanerr');
 359                                 return;
 360                         }
 361
 362                         # if this is a 'bad spotter' user then ignore it
 363                         my $nossid = $from;
 364                         $nossid =~ s/-\d+$//;
 365                         if ($badspotter->in($nossid)) {
 366                                 dbg("PCPROT: Bad Spotter, dropped") if isdbg('chanerr');
 367                                 return;
 368                         }
 369
 370                         # if we are converting announces to talk is it a dup?
 371                         if ($ann_to_talk) {
 372                                 if (AnnTalk::is_talk_candidate($from, $field[3]) && AnnTalk::dup($from, $to, $field[3])) {
 373                                         dbg("DXPROT: Dupe talk from announce, dropped") if isdbg('chanerr');
 374                                         return;
 375                                 }
 376                         }
 377
 378                         # it is here and logged on
 379                         $dxchan = DXChannel->get($main::myalias) if $to eq $main::mycall;
 380                         $dxchan = DXChannel->get($to) unless $dxchan;
 381                         if ($dxchan && $dxchan->is_user) {
 382                                 $field[3] =~ s/\%5E/^/g;
 383                                 $dxchan->talk($from, $to, $via, $field[3]);
 384                                 return;
 385                         }
 386
 387                         # is it elsewhere, visible on the cluster via the to address?
 388                         # note: this discards the via unless the to address is on
 389                         # the via address
 390                         my ($ref, $vref);
 391                         if ($ref = Route::get($to)) {
 392                                 $vref = Route::Node::get($via) if $via;
 393                                 $vref = undef unless $vref && grep $to eq $_, $vref->users;
 394                                 $ref->dxchan->talk($from, $to, $vref ? $via : undef, $field[3], $field[6]);
 395                                 return;
 396                         }
 397
 398                         # not visible here, send a message of condolence
 399                         $vref = undef;
 400                         $ref = Route::get($from);
 401                         $vref = $ref = Route::Node::get($field[6]) unless $ref;
 402                         if ($ref) {
 403                                 $dxchan = $ref->dxchan;
 404                                 $dxchan->talk($main::mycall, $from, $vref ? $vref->call : undef, $dxchan->msg('talknh', $to) );
 405                         }
 406                         return;
 407                 }
 408
 409                 if ($pcno == 11 || $pcno == 26) { # dx spot
 410
 411                         # route 'foreign' pc26s
 412                         if ($pcno == 26) {
 413                                 if ($field[7] ne $main::mycall) {
 414                                         $self->route($field[7], $line);
 415                                         return;
 416                                 }
 417                         }
 418
 419                         # rsfp check
 420 #                       return if $rspfcheck and !$self->rspfcheck(1, $field[7], $field[6]);
 421
 422                         # if this is a 'nodx' node then ignore it
 423                         if ($badnode->in($field[7])) {
 424                                 dbg("PCPROT: Bad Node, dropped") if isdbg('chanerr');
 425                                 return;
 426                         }
 427
 428                         # if this is a 'bad spotter' user then ignore it
 429                         my $nossid = $field[6];
 430                         $nossid =~ s/-\d+$//;
 431                         if ($badspotter->in($nossid)) {
 432                                 dbg("PCPROT: Bad Spotter, dropped") if isdbg('chanerr');
 433                                 return;
 434                         }
 435
 436                         # convert the date to a unix date
 437                         my $d = cltounix($field[3], $field[4]);
 438                         # bang out (and don't pass on) if date is invalid or the spot is too old (or too young)
 439                         if (!$d || ($pcno == 11 && ($d < $main::systime - $pc11_max_age || $d > $main::systime + 900))) {
 440                                 dbg("PCPROT: Spot ignored, invalid date or out of range ($field[3] $field[4])\n") if isdbg('chanerr');
 441                                 return;
 442                         }
 443
 444                         # is it 'baddx'
 445                         if ($baddx->in($field[2]) || BadWords::check($field[2]) || $field[2] =~ /COCK/) {
 446                                 dbg("PCPROT: Bad DX spot, ignored") if isdbg('chanerr');
 447                                 return;
 448                         }
 449
 450                         # do some de-duping
 451                         $field[5] =~ s/^\s+//;      # take any leading blanks off
 452                         $field[2] = unpad($field[2]);   # take off leading and trailing blanks from spotted callsign
 453                         if ($field[2] =~ /BUST\w*$/) {
 454                                 dbg("PCPROT: useless 'BUSTED' spot") if isdbg('chanerr');
 455                                 return;
 456                         }
 457                         if ($censorpc) {
 458                                 my @bad;
 459                                 if (@bad = BadWords::check($field[5])) {
 460                                         dbg("PCPROT: Bad words: @bad, dropped") if isdbg('chanerr');
 461                                         return;
 462                                 }
 463                         }
 464
 465
 466                         my @spot = Spot::prepare($field[1], $field[2], $d, $field[5], $field[6], $field[7]);
 467                         # global spot filtering on INPUT
 468                         if ($self->{inspotsfilter}) {
 469                                 my ($filter, $hops) = $self->{inspotsfilter}->it(@spot);
 470                                 unless ($filter) {
 471                                         dbg("PCPROT: Rejected by input spot filter") if isdbg('chanerr');
 472                                         return;
 473                                 }
 474                         }
 475
 476                         # this goes after the input filtering, but before the add
 477                         # so that if it is input filtered, it isn't added to the dup
 478                         # list. This allows it to come in from a "legitimate" source
 479                         if (Spot::dup($field[1], $field[2], $d, $field[5], $field[6])) {
 480                                 dbg("PCPROT: Duplicate Spot ignored\n") if isdbg('chanerr');
 481                                 return;
 482                         }
 483
 484                         # add it
 485                         Spot::add(@spot);
 486
 487             #
 488                         # @spot at this point contains:-
 489             # freq, spotted call, time, text, spotter, spotted cc, spotters cc, orig node
 490                         # then  spotted itu, spotted cq, spotters itu, spotters cq
 491                         # you should be able to route on any of these
 492             #
 493
 494                         # fix up qra locators of known users
 495                         my $user = DXUser->get_current($spot[4]);
 496                         if ($user) {
 497                                 my $qra = $user->qra;
 498                                 unless ($qra && is_qra($qra)) {
 499                                         my $lat = $user->lat;
 500                                         my $long = $user->long;
 501                                         if (defined $lat && defined $long) {
 502                                                 $user->qra(DXBearing::lltoqra($lat, $long));
 503                                                 $user->put;
 504                                         }
 505                                 }
 506
 507                                 # send a remote command to a distant cluster if it is visible and there is no
 508                                 # qra locator and we havn't done it for a month.
 509
 510                                 unless ($user->qra) {
 511                                         my $node;
 512                                         my $to = $user->homenode;
 513                                         my $last = $user->lastoper || 0;
 514                                         if ($send_opernam && $to && $to ne $main::mycall && $main::systime > $last + $DXUser::lastoperinterval && ($node = Route::Node::get($to)) ) {
 515                                                 my $cmd = "forward/opernam $spot[4]";
 516                                                 # send the rcmd but we aren't interested in the replies...
 517                                                 my $dxchan = $node->dxchan;
 518                                                 if ($dxchan && $dxchan->is_clx) {
 519                                                         route(undef, $to, pc84($main::mycall, $to, $main::mycall, $cmd));
 520                                                 } else {
 521                                                         route(undef, $to, pc34($main::mycall, $to, $cmd));
 522                                                 }
 523                                                 if ($to ne $field[7]) {
 524                                                         $to = $field[7];
 525                                                         $node = Route::Node::get($to);
 526                                                         if ($node) {
 527                                                                 $dxchan = $node->dxchan;
 528                                                                 if ($dxchan && $dxchan->is_clx) {
 529                                                                         route(undef, $to, pc84($main::mycall, $to, $main::mycall, $cmd));
 530                                                                 } else {
 531                                                                         route(undef, $to, pc34($main::mycall, $to, $cmd));
 532                                                                 }
 533                                                         }
 534                                                 }
 535                                                 $user->lastoper($main::systime);
 536                                                 $user->put;
 537                                         }
 538                                 }
 539                         }
 540
 541                         # local processing
 542                         my $r;
 543                         eval {
 544                                 $r = Local::spot($self, @spot);
 545                         };
 546 #                       dbg("Local::spot1 error $@") if isdbg('local') if $@;
 547                         return if $r;
 548
 549                         # DON'T be silly and send on PC26s!
 550                         return if $pcno == 26;
 551
 552                         # send out the filtered spots
 553                         send_dx_spot($self, $line, @spot) if @spot;
 554                         return;
 555                 }
 556
 557                 if ($pcno == 12) {              # announces
 558
 559 #                       return if $rspfcheck and !$self->rspfcheck(1, $field[5], $field[1]);
 560
 561                         # announce duplicate checking
 562                         $field[3] =~ s/^\s+//;  # remove leading blanks
 563
 564                         if ($censorpc) {
 565                                 my @bad;
 566                                 if (@bad = BadWords::check($field[3])) {
 567                                         dbg("PCPROT: Bad words: @bad, dropped") if isdbg('chanerr');
 568                                         return;
 569                                 }
 570                         }
 571
 572                         # if this is a 'nodx' node then ignore it
 573                         if ($badnode->in($field[5])) {
 574                                 dbg("PCPROT: Bad Node, dropped") if isdbg('chanerr');
 575                                 return;
 576                         }
 577
 578                         # if this is a 'bad spotter' user then ignore it
 579                         my $nossid = $field[1];
 580                         $nossid =~ s/-\d+$//;
 581                         if ($badspotter->in($nossid)) {
 582                                 dbg("PCPROT: Bad Spotter, dropped") if isdbg('chanerr');
 583                                 return;
 584                         }
 585
 586                         if ($field[2] eq '*' || $field[2] eq $main::mycall) {
 587
 588
 589                                 # here's a bit of fun, convert incoming ann with a callsign in the first word
 590                                 # or one saying 'to <call>' to a talk if we can route to the recipient
 591                                 if ($ann_to_talk) {
 592                                         my $call = AnnTalk::is_talk_candidate($field[1], $field[3]);
 593                                         if ($call) {
 594                                                 my $ref = Route::get($call);
 595                                                 if ($ref) {
 596                                                         my $dxchan = $ref->dxchan;
 597                                                         $dxchan->talk($field[1], $call, undef, $field[3], $field[5]) if $dxchan != $self;
 598                                                         return;
 599                                                 }
 600                                         }
 601                                 }
 602
 603                                 # send it
 604                                 $self->send_announce($line, @field[1..6]);
 605                         } else {
 606                                 $self->route($field[2], $line);
 607                         }
 608                         return;
 609                 }
 610
 611                 if ($pcno == 13) {
 612                         last SWITCH;
 613                 }
 614                 if ($pcno == 14) {
 615                         last SWITCH;
 616                 }
 617                 if ($pcno == 15) {
 618                         last SWITCH;
 619                 }
 620
 621                 if ($pcno == 16) {              # add a user
 622
 623                         if (eph_dup($line)) {
 624                                 dbg("PCPROT: dup PC16 detected") if isdbg('chanerr');
 625                                 return;
 626                         }
 627
 628                         # general checks
 629                         my $dxchan;
 630                         my $ncall = $field[1];
 631                         my $newline = "PC16^";
 632
 633                         # do I want users from this channel?
 634                         unless ($self->user->wantpc16) {
 635                                 dbg("PCPROT: don't send users to $self->{call}") if isdbg('chanerr');
 636                                 return;
 637                         }
 638                         # is it me?
 639                         if ($ncall eq $main::mycall) {
 640                                 dbg("PCPROT: trying to alter config on this node from outside!") if isdbg('chanerr');
 641                                 return;
 642                         }
 643                         my $parent = Route::Node::get($ncall);
 644
 645                         # if there is a parent, proceed, otherwise if there is a latent PC19 in the PC19list,
 646                         # fix it up in the routing tables and issue it forth before the PC16
 647                         unless ($parent) {
 648                                 my $nl = $pc19list{$ncall};
 649
 650                                 if ($nl && @field > 3) {                     # 3 because of the hop count!
 651
 652                                         # this is a new (remembered) node, now attach it to me if it isn't in filtered
 653                                         # and we haven't disallowed it
 654                                         my $user = DXUser->get_current($ncall);
 655                                         if (!$user) {
 656                                                 $user = DXUser->new($ncall);
 657                                                 $user->sort('A');
 658                                                 $user->priv(1);                   # I have relented and defaulted nodes
 659                                                 $user->lockout(1);
 660                                                 $user->homenode($ncall);
 661                                                 $user->node($ncall);
 662                                         }
 663
 664                                         my $wantpc19 = $user->wantroutepc19;
 665                                         if ($wantpc19 || !defined $wantpc19) {
 666                                                 my $new = Route->new($ncall);          # throw away
 667                                                 if ($self->in_filter_route($new)) {
 668                                                         my @nrout;
 669                                                         for (@$nl) {
 670                                                                 $parent = Route::Node::get($_->[0]);
 671                                                                 $dxchan = $parent->dxchan if $parent;
 672                                                                 if ($dxchan && $dxchan ne $self) {
 673                                                                         dbg("PCPROT: PC16 from $self->{call} trying to alter locally connected $ncall, ignored!") if isdbg('chanerr');
 674                                                                         $parent = undef;
 675                                                                 }
 676                                                                 if ($parent) {
 677                                                                         my $r = $parent->add($ncall, $_->[1], $_->[2]);
 678                                                                         push @nrout, $r unless @nrout;
 679                                                                 }
 680                                                         }
 681                                                         $user->wantroutepc19(1) unless defined $wantpc19;              # for now we work on the basis that pc16 = real route
 682                                                         $user->lastin($main::systime) unless DXChannel->get($ncall);
 683                                                         $user->put;
 684
 685                                                         # route the pc19 - this will cause 'stuttering PC19s' for a while
 686                                                         $self->route_pc19(@nrout) if @nrout ;
 687                                                         $parent = Route::Node::get($ncall);
 688                                                 } else {
 689                                                         return;
 690                                                 }
 691                                                 delete $pc19list{$ncall};
 692                                         }
 693                                 } else {
 694                                         dbg("PCPROT: Node $ncall not in config") if isdbg('chanerr');
 695                                         return;
 696                                 }
 697                         } else {
 698
 699                                 $dxchan = $parent->dxchan;
 700                                 if ($dxchan && $dxchan ne $self) {
 701                                         dbg("PCPROT: PC16 from $self->{call} trying to alter locally connected $ncall, ignored!") if isdbg('chanerr');
 702                                         return;
 703                                 }
 704
 705                                 # input filter if required
 706                                 return unless $self->in_filter_route($parent);
 707                         }
 708
 709                         my $i;
 710                         my @rout;
 711                         for ($i = 2; $i < $#field; $i++) {
 712                                 my ($call, $conf, $here) = $field[$i] =~ /^(\S+) (\S) (\d)/o;
 713                                 next unless $call && $conf && defined $here && is_callsign($call);
 714                                 next if $call eq $main::mycall;
 715
 716                                 eph_del_regex("^PC17\\^$call\\^$ncall");
 717
 718                                 $conf = $conf eq '*';
 719
 720                                 # reject this if we think it is a node already
 721                                 my $r = Route::Node::get($call);
 722                                 my $u = DXUser->get_current($call) unless $r;
 723                                 if ($r || ($u && $u->is_node)) {
 724                                         dbg("PCPROT: $call is a node") if isdbg('chanerr');
 725                                         next;
 726                                 }
 727
 728                                 $r = Route::User::get($call);
 729                                 my $flags = Route::here($here)|Route::conf($conf);
 730
 731                                 if ($r) {
 732                                         my @add;
 733                                         push @add, $r->addparent($parent);
 734                                         if ($r->flags != $flags) {
 735                                                 $r->flags($flags);
 736                                                 push @add, $r unless @add;
 737                                         }
 738                                         push @rout, @add;
 739                                 } else {
 740                                         push @rout, $parent->add_user($call, $flags);
 741                                 }
 742
 743
 744                                 # add this station to the user database, if required
 745                                 $call =~ s/-\d+$//o;        # remove ssid for users
 746                                 my $user = DXUser->get_current($call);
 747                                 $user = DXUser->new($call) if !$user;
 748                                 $user->homenode($parent->call) if !$user->homenode;
 749                                 $user->node($parent->call);
 750                                 $user->lastin($main::systime) unless DXChannel->get($call);
 751                                 $user->put;
 752                         }
 753
 754                         # queue up any messages (look for privates only)
 755                         DXMsg::queue_msg(1) if $self->state eq 'normal';
 756
 757                         $self->route_pc16($parent, @rout) if @rout;
 758                         return;
 759                 }
 760
 761                 if ($pcno == 17) {              # remove a user
 762                         my $dxchan;
 763                         my $ncall = $field[2];
 764                         my $ucall = $field[1];
 765
 766                         eph_del_regex("^PC16\\^$ncall.*$ucall");
 767
 768                         # do I want users from this channel?
 769                         unless ($self->user->wantpc16) {
 770                                 dbg("PCPROT: don't send users to $self->{call}") if isdbg('chanerr');
 771                                 return;
 772                         }
 773                         if ($ncall eq $main::mycall) {
 774                                 dbg("PCPROT: trying to alter config on this node from outside!") if isdbg('chanerr');
 775                                 return;
 776                         }
 777
 778                         my $uref = Route::User::get($ucall);
 779                         unless ($uref) {
 780                                 dbg("PCPROT: Route::User $ucall not in config") if isdbg('chanerr');
 781                                 return;
 782                         }
 783                         my $parent = Route::Node::get($ncall);
 784                         unless ($parent) {
 785                                 dbg("PCPROT: Route::Node $ncall not in config") if isdbg('chanerr');
 786                                 return;
 787                         }
 788
 789                         $dxchan = $parent->dxchan;
 790                         if ($dxchan && $dxchan ne $self) {
 791                                 dbg("PCPROT: PC17 from $self->{call} trying to alter locally connected $ncall, ignored!") if isdbg('chanerr');
 792                                 return;
 793                         }
 794
 795                         # input filter if required
 796                         return unless $self->in_filter_route($parent);
 797
 798                         $parent->del_user($uref);
 799
 800                         if (eph_dup($line)) {
 801                                 dbg("PCPROT: dup PC17 detected") if isdbg('chanerr');
 802                                 return;
 803                         }
 804
 805                         $self->route_pc17($parent, $uref);
 806                         return;
 807                 }
 808
 809                 if ($pcno == 18) {              # link request
 810                         $self->state('init');
 811
 812                         # record the type and version offered
 813                         if ($field[1] =~ /DXSpider Version: (\d+\.\d+) Build: (\d+\.\d+)/) {
 814                                 $self->version(53 + $1);
 815                                 $self->user->version(53 + $1);
 816                                 $self->build(0 + $2);
 817                                 $self->user->build(0 + $2);
 818                                 unless ($self->is_spider) {
 819                                         $self->user->sort('S');
 820                                         $self->user->put;
 821                                         $self->sort('S');
 822                                 }
 823                         } else {
 824                                 $self->version(50.0);
 825                                 $self->version($field[2] / 100) if $field[2] && $field[2] =~ /^\d+$/;
 826                                 $self->user->version($self->version);
 827                         }
 828
 829                         # first clear out any nodes on this dxchannel
 830                         my $parent = Route::Node::get($self->{call});
 831                         my @rout = $parent->del_nodes;
 832                         $self->route_pc21(@rout, $parent) if @rout;
 833                         $self->send_local_config();
 834                         $self->send(pc20());
 835                         return;             # we don't pass these on
 836                 }
 837
 838                 if ($pcno == 19) {              # incoming cluster list
 839                         my $i;
 840                         my $newline = "PC19^";
 841
 842                         if (eph_dup($line)) {
 843                                 dbg("PCPROT: dup PC19 detected") if isdbg('chanerr');
 844                                 return;
 845                         }
 846
 847                         # new routing list
 848                         my @rout;
 849                         my $parent = Route::Node::get($self->{call});
 850                         unless ($parent) {
 851                                 dbg("DXPROT: my parent $self->{call} has disappeared");
 852                                 $self->disconnect;
 853                                 return;
 854                         }
 855
 856                         # parse the PC19
 857                         for ($i = 1; $i < $#field-1; $i += 4) {
 858                                 my $here = $field[$i];
 859                                 my $call = uc $field[$i+1];
 860                                 my $conf = $field[$i+2];
 861                                 my $ver = $field[$i+3];
 862                                 next unless defined $here && defined $conf && is_callsign($call);
 863
 864                                 eph_del_regex("^PC(?:21\\^$call|17\\^[^\\^]+\\^$call)");
 865
 866                                 # check for sane parameters
 867 #                               $ver = 5000 if $ver eq '0000';
 868                                 next if $ver < 5000; # only works with version 5 software
 869                                 next if length $call < 3; # min 3 letter callsigns
 870                                 next if $call eq $main::mycall;
 871
 872                                 # check that this PC19 isn't trying to alter the wrong dxchan
 873                                 my $dxchan = DXChannel->get($call);
 874                                 if ($dxchan && $dxchan != $self) {
 875                                         dbg("PCPROT: PC19 from $self->{call} trying to alter wrong locally connected $call, ignored!") if isdbg('chanerr');
 876                                         next;
 877                                 }
 878
 879                                 # add this station to the user database, if required (don't remove SSID from nodes)
 880                                 my $user = DXUser->get_current($call);
 881                                 if (!$user) {
 882                                         $user = DXUser->new($call);
 883                                         $user->sort('A');
 884                                         $user->priv(1);                   # I have relented and defaulted nodes
 885                                         $user->lockout(1);
 886                                         $user->homenode($call);
 887                                         $user->node($call);
 888                                 }
 889
 890                                 my $r = Route::Node::get($call);
 891                                 my $flags = Route::here($here)|Route::conf($conf);
 892
 893                                 # modify the routing table if it is in it, otherwise store it in the pc19list for now
 894                                 if ($r) {
 895                                         my $ar;
 896                                         if ($call ne $parent->call) {
 897                                                 if ($self->in_filter_route($r)) {
 898                                                         $ar = $parent->add($call, $ver, $flags);
 899                                                         push @rout, $ar if $ar;
 900                                                 } else {
 901                                                         next;
 902                                                 }
 903                                         }
 904                                         if ($r->version ne $ver || $r->flags != $flags) {
 905                                                 $r->version($ver);
 906                                                 $r->flags($flags);
 907                                                 push @rout, $r unless $ar;
 908                                         }
 909                                 } else {
 910
 911                                         # if he is directly connected or allowed then add him, otherwise store him up for later
 912                                         if ($call eq $self->{call} || $user->wantroutepc19) {
 913                                                 my $new = Route->new($call);          # throw away
 914                                                 if ($self->in_filter_route($new)) {
 915                                                         my $ar = $parent->add($call, $ver, $flags);
 916                                                         $user->wantroutepc19(1) unless defined $user->wantroutepc19;
 917                                                         push @rout, $ar if $ar;
 918                                                 } else {
 919                                                         next;
 920                                                 }
 921                                         } else {
 922                                                 $pc19list{$call} = [] unless exists $pc19list{$call};
 923                                                 my $nl = $pc19list{$call};
 924                                                 push @{$pc19list{$call}}, [$self->{call}, $ver, $flags] unless grep $_->[0] eq $self->{call}, @$nl;
 925                                         }
 926                                 }
 927
 928                                 # unbusy and stop and outgoing mail (ie if somehow we receive another PC19 without a disconnect)
 929                                 my $mref = DXMsg::get_busy($call);
 930                                 $mref->stop_msg($call) if $mref;
 931
 932                                 $user->lastin($main::systime) unless DXChannel->get($call);
 933                                 $user->put;
 934                         }
 935
 936
 937                         $self->route_pc19(@rout) if @rout;
 938                         return;
 939                 }
 940
 941                 if ($pcno == 20) {              # send local configuration
 942                         $self->send_local_config();
 943                         $self->send(pc22());
 944                         $self->state('normal');
 945                         $self->{lastping} = 0;
 946                         return;
 947                 }
 948
 949                 if ($pcno == 21) {              # delete a cluster from the list
 950                         my $call = uc $field[1];
 951
 952                         eph_del_regex("^PC1[679].*$call");
 953
 954                         # if I get a PC21 from the same callsign as self then treat it
 955                         # as a PC39: I have gone away
 956                         if ($call eq $self->call) {
 957                                 $self->disconnect(1);
 958                                 return;
 959                         }
 960
 961                         # check to see if we are in the pc19list, if we are then don't bother with any of
 962                         # this routing table manipulation, just remove it from the list and dump it
 963                         my @rout;
 964                         if (my $nl = $pc19list{$call}) {
 965                                 $pc19list{$call} = [ grep {$_->[0] ne $self->{call}} @$nl ];
 966                                 delete $pc19list{$call} unless @{$pc19list{$call}};
 967                         } else {
 968
 969                                 my $parent = Route::Node::get($self->{call});
 970                                 unless ($parent) {
 971                                         dbg("DXPROT: my parent $self->{call} has disappeared");
 972                                         $self->disconnect;
 973                                         return;
 974                                 }
 975                                 if ($call ne $main::mycall) { # don't allow malicious buggers to disconnect me!
 976                                         my $node = Route::Node::get($call);
 977                                         if ($node) {
 978
 979                                                 my $dxchan = DXChannel->get($call);
 980                                                 if ($dxchan && $dxchan != $self) {
 981                                                         dbg("PCPROT: PC21 from $self->{call} trying to alter locally connected $call, ignored!") if isdbg('chanerr');
 982                                                         return;
 983                                                 }
 984
 985                                                 # input filter it
 986                                                 return unless $self->in_filter_route($node);
 987
 988                                                 # routing objects
 989                                                 push @rout, $node->del($parent);
 990                                         }
 991                                 } else {
 992                                         dbg("PCPROT: I WILL _NOT_ be disconnected!") if isdbg('chanerr');
 993                                         return;
 994                                 }
 995                         }
 996
 997                         $self->route_pc21(@rout) if @rout;
 998                         return;
 999                 }
1000
1001                 if ($pcno == 22) {
1002                         $self->state('normal');
1003                         $self->{lastping} = 0;
1004                         return;
1005                 }
1006
1007                 if ($pcno == 23 || $pcno == 27) { # WWV info
1008
1009                         # route 'foreign' pc27s
1010                         if ($pcno == 27) {
1011                                 if ($field[8] ne $main::mycall) {
1012                                         $self->route($field[8], $line);
1013                                         return;
1014                                 }
1015                         }
1016
1017                         return if $rspfcheck and !$self->rspfcheck(1, $field[8], $field[7]);
1018
1019                         # do some de-duping
1020                         my $d = cltounix($field[1], sprintf("%02d18Z", $field[2]));
1021                         my $sfi = unpad($field[3]);
1022                         my $k = unpad($field[4]);
1023                         my $i = unpad($field[5]);
1024                         my ($r) = $field[6] =~ /R=(\d+)/;
1025                         $r = 0 unless $r;
1026                         if (($pcno == 23 && $d < $main::systime - $pc23_max_age) || $d > $main::systime + 1500 || $field[2] < 0 || $field[2] > 23) {
1027                                 dbg("PCPROT: WWV Date ($field[1] $field[2]) out of range") if isdbg('chanerr');
1028                                 return;
1029                         }
1030                         if (Geomag::dup($d,$sfi,$k,$i,$field[6])) {
1031                                 dbg("PCPROT: Dup WWV Spot ignored\n") if isdbg('chanerr');
1032                                 return;
1033                         }
1034                         $field[7] =~ s/-\d+$//o;            # remove spotter's ssid
1035
1036                         my $wwv = Geomag::update($d, $field[2], $sfi, $k, $i, @field[6..8], $r);
1037
1038                         my $rep;
1039                         eval {
1040                                 $rep = Local::wwv($self, $field[1], $field[2], $sfi, $k, $i, @field[6..8], $r);
1041                         };
1042 #                       dbg("Local::wwv2 error $@") if isdbg('local') if $@;
1043                         return if $rep;
1044
1045                         # DON'T be silly and send on PC27s!
1046                         return if $pcno == 27;
1047
1048                         # broadcast to the eager world
1049                         send_wwv_spot($self, $line, $d, $field[2], $sfi, $k, $i, @field[6..8]);
1050                         return;
1051                 }
1052
1053                 if ($pcno == 24) {              # set here status
1054                         my $call = uc $field[1];
1055                         my ($nref, $uref);
1056                         $nref = Route::Node::get($call);
1057                         $uref = Route::User::get($call);
1058                         return unless $nref || $uref;   # if we don't know where they are, it's pointless sending it on
1059
1060                         unless (eph_dup($line)) {
1061                                 $nref->here($field[2]) if $nref;
1062                                 $uref->here($field[2]) if $uref;
1063                                 my $ref = $nref || $uref;
1064                                 return unless $self->in_filter_route($ref);
1065                                 $self->route_pc24($ref, $field[3]);
1066                         }
1067                         return;
1068                 }
1069
1070                 if ($pcno == 25) {      # merge request
1071                         if ($field[1] ne $main::mycall) {
1072                                 $self->route($field[1], $line);
1073                                 return;
1074                         }
1075                         if ($field[2] eq $main::mycall) {
1076                                 dbg("PCPROT: Trying to merge to myself, ignored") if isdbg('chanerr');
1077                                 return;
1078                         }
1079
1080                         Log('DXProt', "Merge request for $field[3] spots and $field[4] WWV from $field[2]");
1081
1082                         # spots
1083                         if ($field[3] > 0) {
1084                                 my @in = reverse Spot::search(1, undef, undef, 0, $field[3]);
1085                                 my $in;
1086                                 foreach $in (@in) {
1087                                         $self->send(pc26(@{$in}[0..4], $field[2]));
1088                                 }
1089                         }
1090
1091                         # wwv
1092                         if ($field[4] > 0) {
1093                                 my @in = reverse Geomag::search(0, $field[4], time, 1);
1094                                 my $in;
1095                                 foreach $in (@in) {
1096                                         $self->send(pc27(@{$in}[0..5], $field[2]));
1097                                 }
1098                         }
1099                         return;
1100                 }
1101
1102                 if (($pcno >= 28 && $pcno <= 33) || $pcno == 40 || $pcno == 42 || $pcno == 49) { # mail/file handling
1103                         return if $pcno == 49 && eph_dup($line);
1104                         if ($pcno == 49 || $field[1] eq $main::mycall) {
1105                                 DXMsg::process($self, $line);
1106                         } else {
1107                                 $self->route($field[1], $line) unless $self->is_clx;
1108                         }
1109                         return;
1110                 }
1111
1112                 if ($pcno == 34 || $pcno == 36) { # remote commands (incoming)
1113                         if (eph_dup($line, $eph_pc34_restime)) {
1114                                 dbg("PCPROT: dupe") if isdbg('chanerr');
1115                         } else {
1116                                 $self->process_rcmd($field[1], $field[2], $field[2], $field[3]);
1117                         }
1118                         return;
1119                 }
1120
1121                 if ($pcno == 35) {              # remote command replies
1122                         eph_del_regex("^PC35\\^$field[2]\\^$field[1]\\^");
1123                         $self->process_rcmd_reply($field[1], $field[2], $field[1], $field[3]);
1124                         return;
1125                 }
1126
1127                 # for pc 37 see 44 onwards
1128
1129                 if ($pcno == 38) {              # node connected list from neighbour
1130                         return;
1131                 }
1132
1133                 if ($pcno == 39) {              # incoming disconnect
1134                         if ($field[1] eq $self->{call}) {
1135                                 $self->disconnect(1);
1136                         } else {
1137                                 dbg("PCPROT: came in on wrong channel") if isdbg('chanerr');
1138                         }
1139                         return;
1140                 }
1141
1142                 if ($pcno == 41) {              # user info
1143                         my $call = $field[1];
1144
1145                         if (eph_dup($line, $eph_info_restime)) {
1146                                 dbg("PCPROT: dupe") if isdbg('chanerr');
1147                                 return;
1148                         }
1149
1150                         # input filter if required
1151 #                       my $ref = Route::get($call) || Route->new($call);
1152 #                       return unless $self->in_filter_route($ref);
1153
1154                         if ($field[3] eq $field[2] || $field[3] =~ /^\s*$/) {
1155                                 dbg('PCPROT: invalid value') if isdbg('chanerr');
1156                                 return;
1157                         }
1158
1159                         # add this station to the user database, if required
1160                         my $user = DXUser->get_current($call);
1161                         $user = DXUser->new($call) unless $user;
1162
1163                         if ($field[2] == 1) {
1164                                 $user->name($field[3]);
1165                         } elsif ($field[2] == 2) {
1166                                 $user->qth($field[3]);
1167                         } elsif ($field[2] == 3) {
1168                                 if (is_latlong($field[3])) {
1169                                         my ($lat, $long) = DXBearing::stoll($field[3]);
1170                                         $user->lat($lat);
1171                                         $user->long($long);
1172                                         $user->qra(DXBearing::lltoqra($lat, $long));
1173                                 } else {
1174                                         dbg('PCPROT: not a valid lat/long') if isdbg('chanerr');
1175                                         return;
1176                                 }
1177                         } elsif ($field[2] == 4) {
1178                                 $user->homenode($field[3]);
1179                         } elsif ($field[2] == 5) {
1180                                 if (is_qra(uc $field[3])) {
1181                                         my ($lat, $long) = DXBearing::qratoll(uc $field[3]);
1182                                         $user->lat($lat);
1183                                         $user->long($long);
1184                                         $user->qra(uc $field[3]);
1185                                 } else {
1186                                         dbg('PCPROT: not a valid QRA locator') if isdbg('chanerr');
1187                                         return;
1188                                 }
1189                         }
1190                         $user->lastoper($main::systime);   # to cut down on excessive for/opers being generated
1191                         $user->put;
1192
1193                         unless ($self->{isolate}) {
1194                                 DXChannel::broadcast_nodes($line, $self); # send it to everyone but me
1195                         }
1196
1197 #  perhaps this IS what we want after all
1198 #                       $self->route_pc41($ref, $call, $field[2], $field[3], $field[4]);
1199                         return;
1200                 }
1201
1202                 if ($pcno == 43) {
1203                         last SWITCH;
1204                 }
1205
1206                 if ($pcno == 37 || $pcno == 44 || $pcno == 45 || $pcno == 46 || $pcno == 47 || $pcno == 48) {
1207                         DXDb::process($self, $line);
1208                         return;
1209                 }
1210
1211                 if ($pcno == 50) {              # keep alive/user list
1212                         my $call = $field[1];
1213                         my $node = Route::Node::get($call);
1214                         if ($node) {
1215                                 return unless $node->call eq $self->{call};
1216                                 $node->usercount($field[2]);
1217
1218                                 # input filter if required
1219                                 return unless $self->in_filter_route($node);
1220
1221                                 $self->route_pc50($node, $field[2], $field[3]) unless eph_dup($line);
1222                         }
1223                         return;
1224                 }
1225
1226                 if ($pcno == 51) {              # incoming ping requests/answers
1227                         my $to = $field[1];
1228                         my $from = $field[2];
1229                         my $flag = $field[3];
1230
1231
1232                         # is it for us?
1233                         if ($to eq $main::mycall) {
1234                                 if ($flag == 1) {
1235                                         $self->send(pc51($from, $to, '0'));
1236                                 } else {
1237                                         # it's a reply, look in the ping list for this one
1238                                         my $ref = $pings{$from};
1239                                         if ($ref) {
1240                                                 my $tochan =  DXChannel->get($from);
1241                                                 while (@$ref) {
1242                                                         my $r = shift @$ref;
1243                                                         my $dxchan = DXChannel->get($r->{call});
1244                                                         next unless $dxchan;
1245                                                         my $t = tv_interval($r->{t}, [ gettimeofday ]);
1246                                                         if ($dxchan->is_user) {
1247                                                                 my $s = sprintf "%.2f", $t;
1248                                                                 my $ave = sprintf "%.2f", $tochan ? ($tochan->{pingave} || $t) : $t;
1249                                                                 $dxchan->send($dxchan->msg('pingi', $from, $s, $ave))
1250                                                         } elsif ($dxchan->is_node) {
1251                                                                 if ($tochan) {
1252                                                                         my $nopings = $tochan->user->nopings || 2;
1253                                                                         push @{$tochan->{pingtime}}, $t;
1254                                                                         shift @{$tochan->{pingtime}} if @{$tochan->{pingtime}} > 6;
1255
1256                                                                         # cope with a missed ping, this means you must set the pingint large enough
1257                                                                         if ($t > $tochan->{pingint}  && $t < 2 * $tochan->{pingint} ) {
1258                                                                                 $t -= $tochan->{pingint};
1259                                                                         }
1260
1261                                                                         # calc smoothed RTT a la TCP
1262                                                                         if (@{$tochan->{pingtime}} == 1) {
1263                                                                                 $tochan->{pingave} = $t;
1264                                                                         } else {
1265                                                                                 $tochan->{pingave} = $tochan->{pingave} + (($t - $tochan->{pingave}) / 6);
1266                                                                         }
1267                                                                         $tochan->{nopings} = $nopings; # pump up the timer
1268                                                                 }
1269                                                         }
1270                                                 }
1271                                         }
1272                                 }
1273                         } else {
1274                                 if (eph_dup($line)) {
1275                                         dbg("PCPROT: dup PC51 detected") if isdbg('chanerr');
1276                                         return;
1277                                 }
1278                                 # route down an appropriate thingy
1279                                 $self->route($to, $line);
1280                         }
1281                         return;
1282                 }
1283
1284                 if ($pcno == 75) {              # dunno but route it
1285                         my $call = $field[1];
1286                         if ($call ne $main::mycall) {
1287                                 $self->route($call, $line);
1288                         }
1289                         return;
1290                 }
1291
1292                 if ($pcno == 73) {  # WCY broadcasts
1293                         my $call = $field[1];
1294
1295                         # do some de-duping
1296                         my $d = cltounix($call, sprintf("%02d18Z", $field[2]));
1297                         if (($pcno == 23 && $d < $main::systime - $pc23_max_age) || $d > $main::systime + 1500 || $field[2] < 0 || $field[2] > 23) {
1298                                 dbg("PCPROT: WCY Date ($call $field[2]) out of range") if isdbg('chanerr');
1299                                 return;
1300                         }
1301                         @field = map { unpad($_) } @field;
1302                         if (WCY::dup($d)) {
1303                                 dbg("PCPROT: Dup WCY Spot ignored\n") if isdbg('chanerr');
1304                                 return;
1305                         }
1306
1307                         my $wcy = WCY::update($d, @field[2..12]);
1308
1309                         my $rep;
1310                         eval {
1311                                 $rep = Local::wcy($self, @field[1..12]);
1312                         };
1313                         # dbg("Local::wcy error $@") if isdbg('local') if $@;
1314                         return if $rep;
1315
1316                         # broadcast to the eager world
1317                         send_wcy_spot($self, $line, $d, @field[2..12]);
1318                         return;
1319                 }
1320
1321                 if ($pcno == 84) { # remote commands (incoming)
1322                         $self->process_rcmd($field[1], $field[2], $field[3], $field[4]);
1323                         return;
1324                 }
1325
1326                 if ($pcno == 85) {              # remote command replies
1327                         $self->process_rcmd_reply($field[1], $field[2], $field[3], $field[4]);
1328
1329                         return;
1330                 }
1331                 if ($pcno == 90) {              # new style PC16,17,19,21
1332                         return;
1333                 }
1334         }
1335
1336         # if get here then rebroadcast the thing with its Hop count decremented (if
1337         # there is one). If it has a hop count and it decrements to zero then don't
1338         # rebroadcast it.
1339         #
1340         # NOTE - don't arrive here UNLESS YOU WANT this lump of protocol to be
1341         #        REBROADCAST!!!!
1342         #
1343
1344         if (eph_dup($line)) {
1345                 dbg("PCPROT: Ephemeral dup, dropped") if isdbg('chanerr');
1346         } else {
1347                 unless ($self->{isolate}) {
1348                         DXChannel::broadcast_nodes($line, $self); # send it to everyone but me
1349                 }
1350         }
1351 }
1352
1353 #
1354 # This is called from inside the main cluster processing loop and is used
1355 # for despatching commands that are doing some long processing job
1356 #
1357 sub process
1358 {
1359         my $t = time;
1360         my @dxchan = DXChannel->get_all();
1361         my $dxchan;
1362         my $pc50s;
1363
1364         # send out a pc50 on EVERY channel all at once
1365         if ($t >= $last_pc50 + $DXProt::pc50_interval) {
1366                 $pc50s = pc50($main::me, scalar DXChannel::get_all_users);
1367                 eph_dup($pc50s);
1368                 $last_pc50 = $t;
1369         }
1370
1371         foreach $dxchan (@dxchan) {
1372                 next unless $dxchan->is_node();
1373                 next if $dxchan == $main::me;
1374
1375                 # send the pc50 or PC90
1376                 $dxchan->send($pc50s) if $pc50s;
1377
1378                 # send a ping out on this channel
1379                 if ($dxchan->{pingint} && $t >= $dxchan->{pingint} + $dxchan->{lastping}) {
1380                         if ($dxchan->{nopings} <= 0) {
1381                                 $dxchan->disconnect;
1382                         } else {
1383                                 addping($main::mycall, $dxchan->call);
1384                                 $dxchan->{nopings} -= 1;
1385                                 $dxchan->{lastping} = $t;
1386                         }
1387                 }
1388         }
1389
1390         # every ten seconds
1391         if ($t - $last10 >= 10) {
1392                 # clean out ephemera
1393
1394                 eph_clean();
1395
1396                 $last10 = $t;
1397         }
1398
1399         if ($main::systime - 3600 > $last_hour) {
1400                 $last_hour = $main::systime;
1401         }
1402 }
1403
1404 #
1405 # finish up a pc context
1406 #
1407
1408 #
1409 # some active measures
1410 #
1411
1412
1413 sub send_dx_spot
1414 {
1415         my $self = shift;
1416         my $line = shift;
1417         my @dxchan = DXChannel->get_all();
1418         my $dxchan;
1419
1420         # send it if it isn't the except list and isn't isolated and still has a hop count
1421         # taking into account filtering and so on
1422         foreach $dxchan (@dxchan) {
1423                 next if $dxchan == $main::me;
1424                 next if $dxchan == $self && $self->is_node;
1425                 $dxchan->dx_spot($line, $self->{isolate}, @_, $self->{call});
1426         }
1427 }
1428
1429 sub dx_spot
1430 {
1431         my $self = shift;
1432         my $line = shift;
1433         my $isolate = shift;
1434         my ($filter, $hops);
1435
1436         if ($self->{spotsfilter}) {
1437                 ($filter, $hops) = $self->{spotsfilter}->it(@_);
1438                 return unless $filter;
1439         }
1440         send_prot_line($self, $filter, $hops, $isolate, $line);
1441 }
1442
1443 sub send_prot_line
1444 {
1445         my ($self, $filter, $hops, $isolate, $line) = @_;
1446         my $routeit;
1447
1448         if ($hops) {
1449                 $routeit = $line;
1450                 $routeit =~ s/\^H\d+\^\~$/\^H$hops\^\~/;
1451         } else {
1452                 $routeit = adjust_hops($self, $line);  # adjust its hop count by node name
1453                 return unless $routeit;
1454         }
1455         if ($filter) {
1456                 $self->send($routeit);
1457         } else {
1458                 $self->send($routeit) unless $self->{isolate} || $isolate;
1459         }
1460 }
1461
1462
1463 sub send_wwv_spot
1464 {
1465         my $self = shift;
1466         my $line = shift;
1467         my @dxchan = DXChannel->get_all();
1468         my $dxchan;
1469         my ($wwv_dxcc, $wwv_itu, $wwv_cq, $org_dxcc, $org_itu, $org_cq) = (0..0);
1470         my @dxcc = Prefix::extract($_[6]);
1471         if (@dxcc > 0) {
1472                 $wwv_dxcc = $dxcc[1]->dxcc;
1473                 $wwv_itu = $dxcc[1]->itu;
1474                 $wwv_cq = $dxcc[1]->cq;
1475         }
1476         @dxcc = Prefix::extract($_[7]);
1477         if (@dxcc > 0) {
1478                 $org_dxcc = $dxcc[1]->dxcc;
1479                 $org_itu = $dxcc[1]->itu;
1480                 $org_cq = $dxcc[1]->cq;
1481         }
1482
1483         # send it if it isn't the except list and isn't isolated and still has a hop count
1484         # taking into account filtering and so on
1485         foreach $dxchan (@dxchan) {
1486                 next if $dxchan == $main::me;
1487                 next if $dxchan == $self && $self->is_node;
1488                 my $routeit;
1489                 my ($filter, $hops);
1490
1491                 $dxchan->wwv($line, $self->{isolate}, @_, $self->{call}, $wwv_dxcc, $wwv_itu, $wwv_cq, $org_dxcc, $org_itu, $org_cq);
1492         }
1493
1494 }
1495
1496 sub wwv
1497 {
1498         my $self = shift;
1499         my $line = shift;
1500         my $isolate = shift;
1501         my ($filter, $hops);
1502
1503         if ($self->{wwvfilter}) {
1504                 ($filter, $hops) = $self->{wwvfilter}->it(@_);
1505                 return unless $filter;
1506         }
1507         send_prot_line($self, $filter, $hops, $isolate, $line)
1508 }
1509
1510 sub send_wcy_spot
1511 {
1512         my $self = shift;
1513         my $line = shift;
1514         my @dxchan = DXChannel->get_all();
1515         my $dxchan;
1516         my ($wcy_dxcc, $wcy_itu, $wcy_cq, $org_dxcc, $org_itu, $org_cq) = (0..0);
1517         my @dxcc = Prefix::extract($_[10]);
1518         if (@dxcc > 0) {
1519                 $wcy_dxcc = $dxcc[1]->dxcc;
1520                 $wcy_itu = $dxcc[1]->itu;
1521                 $wcy_cq = $dxcc[1]->cq;
1522         }
1523         @dxcc = Prefix::extract($_[11]);
1524         if (@dxcc > 0) {
1525                 $org_dxcc = $dxcc[1]->dxcc;
1526                 $org_itu = $dxcc[1]->itu;
1527                 $org_cq = $dxcc[1]->cq;
1528         }
1529
1530         # send it if it isn't the except list and isn't isolated and still has a hop count
1531         # taking into account filtering and so on
1532         foreach $dxchan (@dxchan) {
1533                 next if $dxchan == $main::me;
1534                 next if $dxchan == $self;
1535
1536                 $dxchan->wcy($line, $self->{isolate}, @_, $self->{call}, $wcy_dxcc, $wcy_itu, $wcy_cq, $org_dxcc, $org_itu, $org_cq);
1537         }
1538 }
1539
1540 sub wcy
1541 {
1542         my $self = shift;
1543         my $line = shift;
1544         my $isolate = shift;
1545         my ($filter, $hops);
1546
1547         if ($self->{wcyfilter}) {
1548                 ($filter, $hops) = $self->{wcyfilter}->it(@_);
1549                 return unless $filter;
1550         }
1551         send_prot_line($self, $filter, $hops, $isolate, $line) if $self->is_clx || $self->is_spider || $self->is_dxnet;
1552 }
1553
1554 # send an announce
1555 sub send_announce
1556 {
1557         my $self = shift;
1558         my $line = shift;
1559         my @dxchan = DXChannel->get_all();
1560         my $dxchan;
1561         my $target;
1562         my $to = 'To ';
1563         my $text = unpad($_[2]);
1564
1565         if ($_[3] eq '*') {     # sysops
1566                 $target = "SYSOP";
1567         } elsif ($_[3] gt ' ') { # speciality list handling
1568                 my ($name) = split /\./, $_[3];
1569                 $target = "$name"; # put the rest in later (if bothered)
1570         }
1571
1572         if ($_[5] eq '1') {
1573                 $target = "WX";
1574                 $to = '';
1575         }
1576         $target = "ALL" if !$target;
1577
1578
1579         # obtain country codes etc
1580         my ($ann_dxcc, $ann_itu, $ann_cq, $org_dxcc, $org_itu, $org_cq) = (0..0);
1581         my ($ann_state, $org_state) = ("", "");
1582         my @dxcc = Prefix::extract($_[0]);
1583         if (@dxcc > 0) {
1584                 $ann_dxcc = $dxcc[1]->dxcc;
1585                 $ann_itu = $dxcc[1]->itu;
1586                 $ann_cq = $dxcc[1]->cq;
1587                 $ann_state = $dxcc[1]->state;
1588         }
1589         @dxcc = Prefix::extract($_[4]);
1590         if (@dxcc > 0) {
1591                 $org_dxcc = $dxcc[1]->dxcc;
1592                 $org_itu = $dxcc[1]->itu;
1593                 $org_cq = $dxcc[1]->cq;
1594                 $org_state = $dxcc[1]->state;
1595         }
1596
1597         if ($self->{inannfilter}) {
1598                 my ($filter, $hops) =
1599                         $self->{inannfilter}->it(@_, $self->{call},
1600                                                                          $ann_dxcc, $ann_itu, $ann_cq,
1601                                                                          $org_dxcc, $org_itu, $org_cq, $ann_state, $org_state);
1602                 unless ($filter) {
1603                         dbg("PCPROT: Rejected by input announce filter") if isdbg('chanerr');
1604                         return;
1605                 }
1606         }
1607
1608         if (AnnTalk::dup($_[0], $_[1], $_[2])) {
1609                 dbg("PCPROT: Duplicate Announce ignored") if isdbg('chanerr');
1610                 return;
1611         }
1612
1613         Log('ann', $target, $_[0], $text);
1614
1615         # send it if it isn't the except list and isn't isolated and still has a hop count
1616         # taking into account filtering and so on
1617         foreach $dxchan (@dxchan) {
1618                 next if $dxchan == $main::me;
1619                 next if $dxchan == $self && $self->is_node;
1620                 $dxchan->announce($line, $self->{isolate}, $to, $target, $text, @_, $self->{call}, $ann_dxcc, $ann_itu, $ann_cq, $org_dxcc, $org_itu, $org_cq);
1621         }
1622 }
1623
1624 sub announce
1625 {
1626         my $self = shift;
1627         my $line = shift;
1628         my $isolate = shift;
1629         my $to = shift;
1630         my $target = shift;
1631         my $text = shift;
1632         my ($filter, $hops);
1633
1634         if ($self->{annfilter}) {
1635                 ($filter, $hops) = $self->{annfilter}->it(@_);
1636                 return unless $filter;
1637         }
1638         send_prot_line($self, $filter, $hops, $isolate, $line) unless $_[1] eq $main::mycall;
1639 }
1640
1641
1642 sub send_local_config
1643 {
1644         my $self = shift;
1645         my $node;
1646         my @nodes;
1647         my @localnodes;
1648         my @remotenodes;
1649
1650         dbg('DXProt::send_local_config') if isdbg('trace');
1651
1652         # send our nodes
1653         if ($self->{isolate}) {
1654                 @localnodes = ( $main::routeroot );
1655         } else {
1656                 # create a list of all the nodes that are not connected to this connection
1657                 # and are not themselves isolated, this to make sure that isolated nodes
1658         # don't appear outside of this node
1659                 my @dxchan = grep { $_->call ne $main::mycall && $_ != $self && !$_->{isolate} } DXChannel::get_all_nodes();
1660                 @localnodes = map { my $r = Route::Node::get($_->{call}); $r ? $r : () } @dxchan if @dxchan;
1661                 my @intcalls = map { $_->nodes } @localnodes if @localnodes;
1662                 my $ref = Route::Node::get($self->{call});
1663                 my @rnodes = $ref->nodes;
1664                 for my $node (@intcalls) {
1665                         push @remotenodes, Route::Node::get($node) unless grep $node eq $_, @rnodes;
1666                 }
1667                 unshift @localnodes, $main::routeroot;
1668         }
1669
1670
1671         $self->send_route(\&pc19, scalar(@localnodes)+scalar(@remotenodes), @localnodes, @remotenodes);
1672
1673         # get all the users connected on the above nodes and send them out
1674         foreach $node (@localnodes, @remotenodes) {
1675                 if ($node) {
1676                         my @rout = map {my $r = Route::User::get($_); $r ? ($r) : ()} $node->users;
1677                         $self->send_route(\&pc16, 1, $node, @rout) if @rout && $self->user->wantsendpc16;
1678                 } else {
1679                         dbg("sent a null value") if isdbg('chanerr');
1680                 }
1681         }
1682 }
1683
1684 #
1685 # route a message down an appropriate interface for a callsign
1686 #
1687 # is called route(to, pcline);
1688 #
1689 sub route
1690 {
1691         my ($self, $call, $line) = @_;
1692
1693         if (ref $self && $call eq $self->{call}) {
1694                 dbg("PCPROT: Trying to route back to source, dropped") if isdbg('chanerr');
1695                 return;
1696         }
1697
1698         # always send it down the local interface if available
1699         my $dxchan = DXChannel->get($call);
1700         unless ($dxchan) {
1701                 my $cl = Route::get($call);
1702                 $dxchan = $cl->dxchan if $cl;
1703                 if (ref $dxchan) {
1704                         if (ref $self && $dxchan eq $self) {
1705                                 dbg("PCPROT: Trying to route back to source, dropped") if isdbg('chanerr');
1706                                 return;
1707                         }
1708                 }
1709         }
1710         if ($dxchan) {
1711                 my $routeit = adjust_hops($dxchan, $line);   # adjust its hop count by node name
1712                 if ($routeit) {
1713                         $dxchan->send($routeit) unless $dxchan == $main::me;
1714                 }
1715         } else {
1716                 dbg("PCPROT: No route available, dropped") if isdbg('chanerr');
1717         }
1718 }
1719
1720 #
1721 # obtain the hops from the list for this callsign and pc no
1722 #
1723
1724 sub get_hops
1725 {
1726         my $pcno = shift;
1727         my $hops = $DXProt::hopcount{$pcno};
1728         $hops = $DXProt::def_hopcount if !$hops;
1729         return "H$hops";
1730 }
1731
1732 #
1733 # adjust the hop count on a per node basis using the user loadable
1734 # hop table if available or else decrement an existing one
1735 #
1736
1737 sub adjust_hops
1738 {
1739         my $self = shift;
1740         my $s = shift;
1741         my $call = $self->{call};
1742         my $hops;
1743
1744         if (($hops) = $s =~ /\^H(\d+)\^~?$/o) {
1745                 my ($pcno) = $s =~ /^PC(\d\d)/o;
1746                 confess "$call called adjust_hops with '$s'" unless $pcno;
1747                 my $ref = $nodehops{$call} if %nodehops;
1748                 if ($ref) {
1749                         my $newhops = $ref->{$pcno};
1750                         return "" if defined $newhops && $newhops == 0;
1751                         $newhops = $ref->{default} unless $newhops;
1752                         return "" if defined $newhops && $newhops == 0;
1753                         $newhops = $hops if !$newhops;
1754                         $s =~ s/\^H(\d+)(\^~?)$/\^H$newhops$2/ if $newhops;
1755                 } else {
1756                         # simply decrement it
1757                         $hops--;
1758                         return "" if !$hops;
1759                         $s =~ s/\^H(\d+)(\^~?)$/\^H$hops$2/ if $hops;
1760                 }
1761         }
1762         return $s;
1763 }
1764
1765 #
1766 # load hop tables
1767 #
1768 sub load_hops
1769 {
1770         my $self = shift;
1771         return $self->msg('lh1') unless -e "$main::data/hop_table.pl";
1772         do "$main::data/hop_table.pl";
1773         return $@ if $@;
1774         return ();
1775 }
1776
1777
1778 # add a ping request to the ping queues
1779 sub addping
1780 {
1781         my ($from, $to) = @_;
1782         my $ref = $pings{$to} || [];
1783         my $r = {};
1784         $r->{call} = $from;
1785         $r->{t} = [ gettimeofday ];
1786         route(undef, $to, pc51($to, $main::mycall, 1));
1787         push @$ref, $r;
1788         $pings{$to} = $ref;
1789 }
1790
1791 sub process_rcmd
1792 {
1793         my ($self, $tonode, $fromnode, $user, $cmd) = @_;
1794         if ($tonode eq $main::mycall) {
1795                 my $ref = DXUser->get_current($fromnode);
1796                 my $cref = Route::Node::get($fromnode);
1797                 Log('rcmd', 'in', $ref->{priv}, $fromnode, $cmd);
1798                 if ($cmd !~ /^\s*rcmd/i && $cref && $ref && $cref->call eq $ref->homenode) { # not allowed to relay RCMDS!
1799                         if ($ref->{priv}) {             # you have to have SOME privilege, the commands have further filtering
1800                                 $self->{remotecmd} = 1; # for the benefit of any command that needs to know
1801                                 my $oldpriv = $self->{priv};
1802                                 $self->{priv} = $ref->{priv}; # assume the user's privilege level
1803                                 my @in = (DXCommandmode::run_cmd($self, $cmd));
1804                                 $self->{priv} = $oldpriv;
1805                                 $self->send_rcmd_reply($main::mycall, $fromnode, $user, @in);
1806                                 delete $self->{remotecmd};
1807                         } else {
1808                                 $self->send_rcmd_reply($main::mycall, $fromnode, $user, "sorry...!");
1809                         }
1810                 } else {
1811                         $self->send_rcmd_reply($main::mycall, $fromnode, $user, "your attempt is logged, Tut tut tut...!");
1812                 }
1813         } else {
1814                 my $ref = DXUser->get_current($tonode);
1815                 if ($ref && $ref->is_clx) {
1816                         $self->route($tonode, pc84($fromnode, $tonode, $user, $cmd));
1817                 } else {
1818                         $self->route($tonode, pc34($fromnode, $tonode, $cmd));
1819                 }
1820         }
1821 }
1822
1823 sub process_rcmd_reply
1824 {
1825         my ($self, $tonode, $fromnode, $user, $line) = @_;
1826         if ($tonode eq $main::mycall) {
1827                 my $s = $rcmds{$fromnode};
1828                 if ($s) {
1829                         my $dxchan = DXChannel->get($s->{call});
1830                         my $ref = $user eq $tonode ? $dxchan : (DXChannel->get($user) || $dxchan);
1831                         $ref->send($line) if $ref;
1832                         delete $rcmds{$fromnode} if !$dxchan;
1833                 } else {
1834                         # send unsolicited ones to the sysop
1835                         my $dxchan = DXChannel->get($main::myalias);
1836                         $dxchan->send($line) if $dxchan;
1837                 }
1838         } else {
1839                 my $ref = DXUser->get_current($tonode);
1840                 if ($ref && $ref->is_clx) {
1841                         $self->route($tonode, pc85($fromnode, $tonode, $user, $line));
1842                 } else {
1843                         $self->route($tonode, pc35($fromnode, $tonode, $line));
1844                 }
1845         }
1846 }
1847
1848 sub send_rcmd_reply
1849 {
1850         my $self = shift;
1851         my $tonode = shift;
1852         my $fromnode = shift;
1853         my $user = shift;
1854         while (@_) {
1855                 my $line = shift;
1856                 $line =~ s/\s*$//;
1857                 Log('rcmd', 'out', $fromnode, $line);
1858                 if ($self->is_clx) {
1859                         $self->send(pc85($main::mycall, $fromnode, $user, "$main::mycall:$line"));
1860                 } else {
1861                         $self->send(pc35($main::mycall, $fromnode, "$main::mycall:$line"));
1862                 }
1863         }
1864 }
1865
1866 # add a rcmd request to the rcmd queues
1867 sub addrcmd
1868 {
1869         my ($self, $to, $cmd) = @_;
1870
1871         my $r = {};
1872         $r->{call} = $self->{call};
1873         $r->{t} = $main::systime;
1874         $r->{cmd} = $cmd;
1875         $rcmds{$to} = $r;
1876
1877         my $ref = Route::Node::get($to);
1878         my $dxchan = $ref->dxchan;
1879         if ($dxchan && $dxchan->is_clx) {
1880                 route(undef, $to, pc84($main::mycall, $to, $self->{call}, $cmd));
1881         } else {
1882                 route(undef, $to, pc34($main::mycall, $to, $cmd));
1883         }
1884 }
1885
1886 sub disconnect
1887 {
1888         my $self = shift;
1889         my $pc39flag = shift;
1890         my $call = $self->call;
1891
1892         return if $self->{disconnecting}++;
1893
1894         unless ($pc39flag && $pc39flag == 1) {
1895                 $self->send_now("D", DXProt::pc39($main::mycall, $self->msg('disc1', "System Op")));
1896         }
1897
1898         # get rid of any PC16/17/19
1899         eph_del_regex("^PC1[679]*$call");
1900
1901         # do routing stuff, remove me from routing table
1902         my $node = Route::Node::get($call);
1903         my @rout;
1904         if ($node) {
1905                 @rout = $node->del($main::routeroot);
1906
1907                 # and all my ephemera as well
1908                 for (@rout) {
1909                         my $c = $_->call;
1910                         eph_del_regex("^PC1[679].*$c");
1911                 }
1912         }
1913
1914         # remove them from the pc19list as well
1915         while (my ($k,$v) = each %pc19list) {
1916                 my @l = grep {$_->[0] ne $call} @{$pc19list{$k}};
1917                 if (@l) {
1918                         $pc19list{$k} = \@l;
1919                 } else {
1920                         delete $pc19list{$k};
1921                 }
1922
1923                 # and the ephemera
1924                 eph_del_regex("^PC1[679].*$k");
1925         }
1926
1927         # unbusy and stop and outgoing mail
1928         my $mref = DXMsg::get_busy($call);
1929         $mref->stop_msg($call) if $mref;
1930
1931         # broadcast to all other nodes that all the nodes connected to via me are gone
1932         unless ($pc39flag && $pc39flag == 2) {
1933                 $self->route_pc21(@rout) if @rout;
1934         }
1935
1936         # remove outstanding pings
1937         delete $pings{$call};
1938
1939         # I was the last node visited
1940     $self->user->node($main::mycall);
1941
1942         # send info to all logged in thingies
1943         $self->tell_login('logoutn');
1944
1945         Log('DXProt', $call . " Disconnected");
1946
1947         $self->SUPER::disconnect;
1948 }
1949
1950
1951 #
1952 # send a talk message to this thingy
1953 #
1954 sub talk
1955 {
1956         my ($self, $from, $to, $via, $line, $origin) = @_;
1957
1958         $line =~ s/\^/\\5E/g;                   # remove any ^ characters
1959         $self->send(DXProt::pc10($from, $to, $via, $line, $origin));
1960         Log('talk', $to, $from, $via?$via:$self->call, $line) unless $origin && $origin ne $main::mycall;
1961 }
1962
1963 # send it if it isn't the except list and isn't isolated and still has a hop count
1964 # taking into account filtering and so on
1965 sub send_route
1966 {
1967         my $self = shift;
1968         my $generate = shift;
1969         my $no = shift;     # the no of things to filter on
1970         my $routeit;
1971         my ($filter, $hops);
1972         my @rin;
1973
1974         for (; @_ && $no; $no--) {
1975                 my $r = shift;
1976
1977                 if (!$self->{isolate} && $self->{routefilter}) {
1978                         $filter = undef;
1979                         if ($r) {
1980                                 ($filter, $hops) = $self->{routefilter}->it($self->{call}, $self->{dxcc}, $self->{itu}, $self->{cq}, $r->call, $r->dxcc, $r->itu, $r->cq, $self->{state}, $r->{state});
1981                                 if ($filter) {
1982                                         push @rin, $r;
1983                                 } else {
1984                                         dbg("DXPROT: $self->{call}/" . $r->call . " rejected by output filter") if isdbg('chanerr');
1985                                 }
1986                         } else {
1987                                 dbg("was sent a null value") if isdbg('chanerr');
1988                         }
1989                 } else {
1990                         push @rin, $r unless $self->{isolate} && $r->call ne $main::mycall;
1991                 }
1992         }
1993         if (@rin) {
1994                 foreach my $line (&$generate(@rin, @_)) {
1995                         if ($hops) {
1996                                 $routeit = $line;
1997                                 $routeit =~ s/\^H\d+\^\~$/\^H$hops\^\~/;
1998                         } else {
1999                                 $routeit = adjust_hops($self, $line);  # adjust its hop count by node name
2000                                 next unless $routeit;
2001                         }
2002                         $self->send($routeit);
2003                 }
2004         }
2005 }
2006
2007 sub broadcast_route
2008 {
2009         my $self = shift;
2010         my $generate = shift;
2011         my @dxchan = DXChannel::get_all_nodes();
2012         my $dxchan;
2013         my $line;
2014
2015         unless ($self->{isolate}) {
2016                 foreach $dxchan (@dxchan) {
2017                         next if $dxchan == $self;
2018                         next if $dxchan == $main::me;
2019                         next if $dxchan->user->wantnp;
2020                         next if ($generate == \&pc16 || $generate==\&pc17) && !$dxchan->user->wantsendpc16;
2021
2022                         $dxchan->send_route($generate, @_);
2023                 }
2024         }
2025 }
2026
2027 sub route_pc16
2028 {
2029         my $self = shift;
2030         return unless $self->user->wantpc16;
2031         broadcast_route($self, \&pc16, 1, @_);
2032 }
2033
2034 sub route_pc17
2035 {
2036         my $self = shift;
2037         return unless $self->user->wantpc16;
2038         broadcast_route($self, \&pc17, 1, @_);
2039 }
2040
2041 sub route_pc19
2042 {
2043         my $self = shift;
2044         broadcast_route($self, \&pc19, scalar @_, @_);
2045 }
2046
2047 sub route_pc21
2048 {
2049         my $self = shift;
2050         broadcast_route($self, \&pc21, scalar @_, @_);
2051 }
2052
2053 sub route_pc24
2054 {
2055         my $self = shift;
2056         broadcast_route($self, \&pc24, 1, @_);
2057 }
2058
2059 sub route_pc41
2060 {
2061         my $self = shift;
2062         broadcast_route($self, \&pc41, 1, @_);
2063 }
2064
2065 sub route_pc50
2066 {
2067         my $self = shift;
2068         broadcast_route($self, \&pc50, 1, @_);
2069 }
2070
2071 sub route_pc90
2072 {
2073         my $self = shift;
2074         broadcast_route($self, \&pc90, 1, @_);
2075 }
2076
2077 sub in_filter_route
2078 {
2079         my $self = shift;
2080         my $r = shift;
2081         my ($filter, $hops) = (1, 1);
2082
2083         if ($self->{inroutefilter}) {
2084                 ($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);
2085                 dbg("PCPROT: $self->{call}/" . $r->call . ' rejected by in_filter_route') if !$filter && isdbg('chanerr');
2086         }
2087         return $filter;
2088 }
2089
2090 sub eph_dup
2091 {
2092         my $s = shift;
2093         my $t = shift || $eph_restime;
2094         my $r;
2095
2096         # chop the end off
2097         $s =~ s/\^H\d\d?\^?\~?$//;
2098         $r = 1 if exists $eph{$s};    # pump up the dup if it keeps circulating
2099         $eph{$s} = $main::systime + $t;
2100         return $r;
2101 }
2102
2103 sub eph_del_regex
2104 {
2105         my $regex = shift;
2106         my ($key, $val);
2107         while (($key, $val) = each %eph) {
2108                 if ($key =~ m{$regex}) {
2109                         delete $eph{$key};
2110                 }
2111         }
2112 }
2113
2114 sub eph_clean
2115 {
2116         my ($key, $val);
2117
2118         while (($key, $val) = each %eph) {
2119                 if ($main::systime >= $val) {
2120                         delete $eph{$key};
2121                 }
2122         }
2123 }
2124
2125 sub eph_list
2126 {
2127         my ($key, $val);
2128         my @out;
2129
2130         while (($key, $val) = each %eph) {
2131                 push @out, $key, $val;
2132         }
2133         return @out;
2134 }
2135
2136 sub run_cmd
2137 {
2138         goto &DXCommandmode::run_cmd;
2139 }
2140 1;
2141 __END__