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 DXCluster;
  19 use DXProtVars;
  20 use DXCommandmode;
  21 use DXLog;
  22 use Spot;
  23 use DXProtout;
  24 use DXDebug;
  25 use Filter;
  26 use Local;
  27 use DXDb;
  28 use AnnTalk;
  29 use Geomag;
  30 use WCY;
  31 use Time::HiRes qw(gettimeofday tv_interval);
  32 use BadWords;
  33 use DXHash;
  34
  35 use strict;
  36 use vars qw($me $pc11_max_age $pc23_max_age
  37                         $last_hour %pings %rcmds
  38                         %nodehops $baddx $badspotter $badnode $censorpc
  39                         $allowzero $decode_dk0wcy $send_opernam @checklist);
  40
  41 $me = undef;                                    # the channel id for this cluster
  42 $pc11_max_age = 1*3600;                 # the maximum age for an incoming 'real-time' pc11
  43 $pc23_max_age = 1*3600;                 # the maximum age for an incoming 'real-time' pc23
  44
  45 $last_hour = time;                              # last time I did an hourly periodic update
  46 %pings = ();                    # outstanding ping requests outbound
  47 %rcmds = ();                    # outstanding rcmd requests outbound
  48 %nodehops = ();                 # node specific hop control
  49 $censorpc = 1;                                  # Do a BadWords::check on text fields and reject things
  50                                                                 # loads of 'bad things'
  51 $baddx = new DXHash "baddx";
  52 $badspotter = new DXHash "badspotter";
  53 $badnode = new DXHash "badnode";
  54
  55 @checklist =
  56 (
  57  [ qw(c c m bp bc c) ],                 # pc10
  58  [ qw(f m d t m c c h) ],               # pc11
  59  [ qw(c bc m bp bm p h) ],              # pc12
  60  [ qw(c h) ],                                   #
  61  [ qw(c h) ],                                   #
  62  [ qw(c m h) ],                                 #
  63  undef ,                                                # pc16 has to be validated manually
  64  [ qw(c c h) ],                                 # pc17
  65  [ qw(m n) ],                                   # pc18
  66  undef ,                                                # pc19 has to be validated manually
  67  undef ,                                                # pc20 no validation
  68  [ qw(c m h) ],                                 # pc21
  69  undef ,                                                # pc22 no validation
  70  [ qw(d n n n n m c c h) ],             # pc23
  71  [ qw(c p h) ],                                 # pc24
  72  [ qw(c c n n) ],                               # pc25
  73  [ qw(f m d t m c c bc) ],              # pc26
  74  [ qw(d n n n n m c c bc) ],    # pc27
  75  [ qw(c c m c d t p m bp n p bp bc) ], # pc28
  76  [ qw(c c n m) ],                               # pc29
  77  [ qw(c c n) ],                                 # pc30
  78  [ qw(c c n) ],                                 # pc31
  79  [ qw(c c n) ],                                 # pc32
  80  [ qw(c c n) ],                                 # pc33
  81  [ qw(c c m) ],                                 # pc34
  82  [ qw(c c m) ],                                 # pc35
  83  [ qw(c c m) ],                                 # pc36
  84  [ qw(c c n m) ],                               # pc37
  85  undef,                                                 # pc38 not interested
  86  [ qw(c m) ],                                   # pc39
  87  [ qw(c c m p n) ],                             # pc40
  88  [ qw(c n m h) ],                               # pc41
  89  [ qw(c c n) ],                                 # pc42
  90  undef,                                                 # pc43 don't handle it
  91  [ qw(c c n m m c) ],                   # pc44
  92  [ qw(c c n m) ],                               # pc45
  93  [ qw(c c n) ],                                 # pc46
  94  undef,                                                 # pc47
  95  undef,                                                 # pc48
  96  [ qw(c m h) ],                                 # pc49
  97  [ qw(c n h) ],                                 # pc50
  98  [ qw(c c n) ],                                 # pc51
  99  undef,
 100  undef,
 101  undef,
 102  undef,
 103  undef,
 104  undef,
 105  undef,
 106  undef,
 107  undef,                                                 # pc60
 108  undef,
 109  undef,
 110  undef,
 111  undef,
 112  undef,
 113  undef,
 114  undef,
 115  undef,
 116  undef,
 117  undef,                                                 # pc70
 118  undef,
 119  undef,
 120  [ qw(d n n n n n n m m m c c h) ],     # pc73
 121  undef,
 122  undef,
 123  undef,
 124  undef,
 125  undef,
 126  undef,
 127  undef,                                                 # pc80
 128  undef,
 129  undef,
 130  undef,
 131  [ qw(c c c m) ],                               # pc84
 132  [ qw(c c c m) ],                               # pc85
 133 );
 134
 135 # use the entry in the check list to check the field list presented
 136 # return OK if line NOT in check list (for now)
 137 sub check
 138 {
 139         my $n = shift;
 140         $n -= 10;
 141         return 0 if $n < 0 || $n > @checklist;
 142         my $ref = $checklist[$n];
 143         return 0 unless ref $ref;
 144
 145         my $i;
 146         shift;    # not interested in the first field
 147         for ($i = 0; $i < @$ref; $i++) {
 148                 my ($blank, $act) = $$ref[$i] =~ /^(b?)(\w)$/;
 149                 return 0 unless $act;
 150                 next if $blank && $_[$i] =~ /^[ \*]$/;
 151                 if ($act eq 'c') {
 152                         return $i+1 unless is_callsign($_[$i]);
 153                 } elsif ($act eq 'm') {
 154                         return $i+1 unless is_pctext($_[$i]);
 155                 } elsif ($act eq 'p') {
 156                         return $i+1 unless is_pcflag($_[$i]);
 157                 } elsif ($act eq 'f') {
 158                         return $i+1 unless is_freq($_[$i]);
 159                 } elsif ($act eq 'n') {
 160                         return $i+1 unless $_[$i] =~ /^[\d ]+$/;
 161                 } elsif ($act eq 'h') {
 162                         return $i+1 unless $_[$i] =~ /^H\d\d?$/;
 163                 } elsif ($act eq 'd') {
 164                         return $i+1 unless $_[$i] =~ /^\s*\d+-\w\w\w-[12][90]\d\d$/;
 165                 } elsif ($act eq 't') {
 166                         return $i+1 unless $_[$i] =~ /^[012]\d[012345]\dZ$/;
 167                 }
 168         }
 169         return 0;
 170 }
 171
 172 sub init
 173 {
 174         my $user = DXUser->get($main::mycall);
 175         $DXProt::myprot_version += $main::version*100;
 176         $me = DXProt->new($main::mycall, 0, $user);
 177         $me->{here} = 1;
 178         $me->{state} = "indifferent";
 179         do "$main::data/hop_table.pl" if -e "$main::data/hop_table.pl";
 180         confess $@ if $@;
 181         $me->{sort} = 'S';    # S for spider
 182 }
 183
 184 #
 185 # obtain a new connection this is derived from dxchannel
 186 #
 187
 188 sub new
 189 {
 190         my $self = DXChannel::alloc(@_);
 191         return $self;
 192 }
 193
 194 # this is how a pc connection starts (for an incoming connection)
 195 # issue a PC38 followed by a PC18, then wait for a PC20 (remembering
 196 # all the crap that comes between).
 197 sub start
 198 {
 199         my ($self, $line, $sort) = @_;
 200         my $call = $self->{call};
 201         my $user = $self->{user};
 202
 203         # remember type of connection
 204         $self->{consort} = $line;
 205         $self->{outbound} = $sort eq 'O';
 206         $self->{priv} = $user->priv || 1;     # other clusters can always be 'normal' users
 207         $self->{lang} = $user->lang || 'en';
 208         $self->{isolate} = $user->{isolate};
 209         $self->{consort} = $line;       # save the connection type
 210         $self->{here} = 1;
 211
 212         # get the output filters
 213         $self->{spotsfilter} = Filter::read_in('spots', $call, 0) || Filter::read_in('spots', 'node_default', 0);
 214         $self->{wwvfilter} = Filter::read_in('wwv', $call, 0) || Filter::read_in('wwv', 'node_default', 0);
 215         $self->{wcyfilter} = Filter::read_in('wcy', $call, 0) || Filter::read_in('wcy', 'node_default', 0);
 216         $self->{annfilter} = Filter::read_in('ann', $call, 0) || Filter::read_in('ann', 'node_default', 0) ;
 217
 218
 219         # get the INPUT filters (these only pertain to Clusters)
 220         $self->{inspotsfilter} = Filter::read_in('spots', $call, 1) || Filter::read_in('spots', 'node_default', 1);
 221         $self->{inwwvfilter} = Filter::read_in('wwv', $call, 1) || Filter::read_in('wwv', 'node_default', 1);
 222         $self->{inwcyfilter} = Filter::read_in('wcy', $call, 1) || Filter::read_in('wcy', 'node_default', 1);
 223         $self->{inannfilter} = Filter::read_in('ann', $call, 1) || Filter::read_in('ann', 'node_default', 1);
 224
 225         # set unbuffered and no echo
 226         $self->send_now('B',"0");
 227         $self->send_now('E',"0");
 228
 229         # ping neighbour node stuff
 230         my $ping = $user->pingint;
 231         $ping = 5*60 unless defined $ping;
 232         $self->{pingint} = $ping;
 233         $self->{nopings} = $user->nopings || 2;
 234         $self->{pingtime} = [ ];
 235         $self->{pingave} = 0;
 236
 237         # send initialisation string
 238         unless ($self->{outbound}) {
 239                 $self->send(pc18());
 240                 $self->{lastping} = $main::systime;
 241         } else {
 242                 $self->{lastping} = $main::systime + ($self->pingint / 2);
 243         }
 244         $self->state('init');
 245         $self->{pc50_t} = $main::systime;
 246
 247         # send info to all logged in thingies
 248         $self->tell_login('loginn');
 249
 250         Log('DXProt', "$call connected");
 251 }
 252
 253 #
 254 # This is the normal pcxx despatcher
 255 #
 256 sub normal
 257 {
 258         my ($self, $line) = @_;
 259         my @field = split /\^/, $line;
 260         return unless @field;
 261
 262         pop @field if $field[-1] eq '~';
 263
 264 #       print join(',', @field), "\n";
 265
 266         # ignore any lines that don't start with PC
 267         return if !$field[0] =~ /^PC/;
 268
 269         # process PC frames
 270         my ($pcno) = $field[0] =~ /^PC(\d\d)/; # just get the number
 271         return unless $pcno;
 272         return if $pcno < 10 || $pcno > 99;
 273
 274         # check for and dump bad protocol messages
 275         my $n = check($pcno, @field);
 276         if ($n) {
 277                 dbg('chan', "PCPROT: bad field $n, dumped (" . parray($checklist[$pcno-10]) . ")");
 278                 return;
 279         }
 280
 281         # local processing 1
 282         my $pcr;
 283         eval {
 284                 $pcr = Local::pcprot($self, $pcno, @field);
 285         };
 286 #       dbg('local', "Local::pcprot error $@") if $@;
 287         return if $pcr;
 288
 289  SWITCH: {
 290                 if ($pcno == 10) {              # incoming talk
 291
 292                         # will we allow it at all?
 293                         if ($censorpc) {
 294                                 my @bad;
 295                                 if (@bad = BadWords::check($field[3])) {
 296                                         dbg('chan', "PCPROT: Bad words: @bad, dropped" );
 297                                         return;
 298                                 }
 299                         }
 300
 301                         # is it for me or one of mine?
 302                         my ($to, $via, $call, $dxchan);
 303                         if ($field[5] gt ' ') {
 304                                 $call = $via = $field[2];
 305                                 $to = $field[5];
 306                         } else {
 307                                 $call = $to = $field[2];
 308                         }
 309                         $dxchan = DXChannel->get($call);
 310                         if ($dxchan && $dxchan->is_user) {
 311                                 $field[3] =~ s/\%5E/^/g;
 312                                 $dxchan->talk($field[1], $to, $via, $field[3]);
 313                         } else {
 314                                 $self->route($field[2], $line); # relay it on its way
 315                         }
 316                         return;
 317                 }
 318
 319                 if ($pcno == 11 || $pcno == 26) { # dx spot
 320
 321                         # route 'foreign' pc26s
 322                         if ($pcno == 26) {
 323                                 if ($field[7] ne $main::mycall) {
 324                                         $self->route($field[7], $line);
 325                                         return;
 326                                 }
 327                         }
 328
 329                         # if this is a 'nodx' node then ignore it
 330                         if ($badnode->in($field[7])) {
 331                                 dbg('chan', "PCPROT: Bad Node, dropped");
 332                                 return;
 333                         }
 334
 335                         # if this is a 'bad spotter' user then ignore it
 336                         if ($badspotter->in($field[6])) {
 337                                 dbg('chan', "PCPROT: Bad Spotter, dropped");
 338                                 return;
 339                         }
 340
 341                         # convert the date to a unix date
 342                         my $d = cltounix($field[3], $field[4]);
 343                         # bang out (and don't pass on) if date is invalid or the spot is too old (or too young)
 344                         if (!$d || ($pcno == 11 && ($d < $main::systime - $pc11_max_age || $d > $main::systime + 900))) {
 345                                 dbg('chan', "PCPROT: Spot ignored, invalid date or out of range ($field[3] $field[4])\n");
 346                                 return;
 347                         }
 348
 349                         # is it 'baddx'
 350                         if ($baddx->in($field[2])) {
 351                                 dbg('chan', "PCPROT: Bad DX spot, ignored");
 352                                 return;
 353                         }
 354
 355                         # do some de-duping
 356                         $field[5] =~ s/^\s+//;      # take any leading blanks off
 357                         $field[2] = unpad($field[2]);   # take off leading and trailing blanks from spotted callsign
 358                         if ($field[2] =~ /BUST\w*$/) {
 359                                 dbg('chan', "PCPROT: useless 'BUSTED' spot");
 360                                 return;
 361                         }
 362                         if (Spot::dup($field[1], $field[2], $d, $field[5])) {
 363                                 dbg('chan', "PCPROT: Duplicate Spot ignored\n");
 364                                 return;
 365                         }
 366                         if ($censorpc) {
 367                                 my @bad;
 368                                 if (@bad = BadWords::check($field[5])) {
 369                                         dbg('chan', "PCPROT: Bad words: @bad, dropped" );
 370                                         return;
 371                                 }
 372                         }
 373
 374                         my @spot = Spot::prepare($field[1], $field[2], $d, $field[5], $field[6], $field[7]);
 375                         # global spot filtering on INPUT
 376                         if ($self->{inspotsfilter}) {
 377                                 my ($filter, $hops) = $self->{inspotsfilter}->it(@spot);
 378                                 unless ($filter) {
 379                                         dbg('chan', "PCPROT: Rejected by filter");
 380                                         return;
 381                                 }
 382                         }
 383
 384                         # add it
 385                         Spot::add(@spot);
 386
 387             #
 388                         # @spot at this point contains:-
 389             # freq, spotted call, time, text, spotter, spotted cc, spotters cc, orig node
 390                         # then  spotted itu, spotted cq, spotters itu, spotters cq
 391                         # you should be able to route on any of these
 392             #
 393
 394                         # fix up qra locators of known users
 395                         my $user = DXUser->get_current($spot[4]);
 396                         if ($user) {
 397                                 my $qra = $user->qra;
 398                                 unless ($qra && DXBearing::is_qra($qra)) {
 399                                         my $lat = $user->lat;
 400                                         my $long = $user->long;
 401                                         if (defined $lat && defined $long) {
 402                                                 $user->qra(DXBearing::lltoqra($lat, $long));
 403                                                 $user->put;
 404                                         }
 405                                 }
 406
 407                                 # send a remote command to a distant cluster if it is visible and there is no
 408                                 # qra locator and we havn't done it for a month.
 409
 410                                 unless ($user->qra) {
 411                                         my $node;
 412                                         my $to = $user->homenode;
 413                                         my $last = $user->lastoper || 0;
 414                                         if ($send_opernam && $main::systime > $last + $DXUser::lastoperinterval && $to && ($node = DXCluster->get_exact($to)) ) {
 415                                                 my $cmd = "forward/opernam $spot[4]";
 416                                                 # send the rcmd but we aren't interested in the replies...
 417                                                 if ($node && $node->dxchan && $node->dxchan->is_clx) {
 418                                                         route(undef, $to, pc84($main::mycall, $to, $main::mycall, $cmd));
 419                                                 } else {
 420                                                         route(undef, $to, pc34($main::mycall, $to, $cmd));
 421                                                 }
 422                                                 if ($to ne $field[7]) {
 423                                                         $to = $field[7];
 424                                                         $node = DXCluster->get_exact($to);
 425                                                         if ($node && $node->dxchan && $node->dxchan->is_clx) {
 426                                                                 route(undef, $to, pc84($main::mycall, $to, $main::mycall, $cmd));
 427                                                         } else {
 428                                                                 route(undef, $to, pc34($main::mycall, $to, $cmd));
 429                                                         }
 430                                                 }
 431                                                 $user->lastoper($main::systime);
 432                                                 $user->put;
 433                                         }
 434                                 }
 435                         }
 436
 437                         # local processing
 438                         my $r;
 439                         eval {
 440                                 $r = Local::spot($self, @spot);
 441                         };
 442 #                       dbg('local', "Local::spot1 error $@") if $@;
 443                         return if $r;
 444
 445                         # DON'T be silly and send on PC26s!
 446                         return if $pcno == 26;
 447
 448                         # send out the filtered spots
 449                         send_dx_spot($self, $line, @spot) if @spot;
 450                         return;
 451                 }
 452
 453                 if ($pcno == 12) {              # announces
 454                         # announce duplicate checking
 455                         $field[3] =~ s/^\s+//;  # remove leading blanks
 456                         if (AnnTalk::dup($field[1], $field[2], $field[3])) {
 457                                 dbg('chan', "PCPROT: Duplicate Announce ignored");
 458                                 return;
 459                         }
 460
 461                         if ($censorpc) {
 462                                 my @bad;
 463                                 if (@bad = BadWords::check($field[3])) {
 464                                         dbg('chan', "PCPROT: Bad words: @bad, dropped" );
 465                                         return;
 466                                 }
 467                         }
 468
 469                         if ($field[2] eq '*' || $field[2] eq $main::mycall) {
 470
 471                                 # global ann filtering on INPUT
 472                                 if ($self->{inannfilter}) {
 473                                         my ($ann_dxcc, $ann_itu, $ann_cq, $org_dxcc, $org_itu, $org_cq) = (0..0);
 474                                         my @dxcc = Prefix::extract($field[1]);
 475                                         if (@dxcc > 0) {
 476                                                 $ann_dxcc = $dxcc[1]->dxcc;
 477                                                 $ann_itu = $dxcc[1]->itu;
 478                                                 $ann_cq = $dxcc[1]->cq();
 479                                         }
 480                                         @dxcc = Prefix::extract($field[5]);
 481                                         if (@dxcc > 0) {
 482                                                 $org_dxcc = $dxcc[1]->dxcc;
 483                                                 $org_itu = $dxcc[1]->itu;
 484                                                 $org_cq = $dxcc[1]->cq();
 485                                         }
 486                                         my ($filter, $hops) = $self->{inannfilter}->it(@field[1..6], $self->{call},
 487                                                                                                         $ann_dxcc, $ann_itu, $ann_cq, $org_dxcc, $org_itu, $org_cq);
 488                                         unless ($filter) {
 489                                                 dbg('chan', "PCPROT: Rejected by filter");
 490                                                 return;
 491                                         }
 492                                 }
 493
 494                                 # send it
 495                                 $self->send_announce($line, @field[1..6]);
 496                         } else {
 497                                 $self->route($field[2], $line);
 498                         }
 499
 500                         return;
 501                 }
 502
 503                 if ($pcno == 13) {
 504                         last SWITCH;
 505                 }
 506                 if ($pcno == 14) {
 507                         last SWITCH;
 508                 }
 509                 if ($pcno == 15) {
 510                         last SWITCH;
 511                 }
 512
 513                 if ($pcno == 16) {              # add a user
 514                         my $node = DXCluster->get_exact($field[1]);
 515                         my $dxchan;
 516                         if (!$node && ($dxchan = DXChannel->get($field[1]))) {
 517                                 # add it to the node table if it isn't present and it's
 518                                 # connected locally
 519                                 $node = DXNode->new($dxchan, $field[1], 0, 1, 5400);
 520                                 dbg('chan', "PCPROT: $field[1] no PC19 yet, autovivified as node");
 521 #                               broadcast_ak1a(pc19($dxchan, $node), $dxchan, $self) unless $dxchan->{isolate};
 522
 523                         }
 524                         if ($field[1] eq $main::mycall || $field[2] eq $main::mycall) {
 525                                 dbg('chan', "PCPROT: trying to alter config on this node from outside!");
 526                                 return;
 527                         }
 528                         if ($field[2] eq $main::myalias && DXChannel->get($field[1])) {
 529                                 dbg('chan', "PCPROT: trying to connect sysop from outside!");
 530                                 return;
 531                         }
 532                         unless ($node) {
 533                                 dbg('chan', "PCPROT: Node $field[1] not in config");
 534                                 return;
 535                         }
 536                         unless ($node->isa('DXNode')) {
 537                                 dbg('chan', "PCPROT: $field[1] is not a node");
 538                                 return;
 539                         }
 540                         if ($node->dxchan != $self) {
 541                                 dbg('chan', "PCPROT: $field[1] came in on wrong channel");
 542                                 return;
 543                         }
 544                         if (($dxchan = DXChannel->get($field[1])) && $dxchan != $self) {
 545                                 dbg('chan', "PCPROT: $field[1] connected locally");
 546                                 return;
 547                         }
 548                         my $i;
 549
 550                         for ($i = 2; $i < $#field; $i++) {
 551                                 my ($call, $confmode, $here) = $field[$i] =~ /^(\S+) (\S) (\d)/o;
 552                                 next unless $call && $confmode && defined $here && is_callsign($call);
 553                                 my $ref = DXCluster->get_exact($call);
 554                                 if ($ref) {
 555                                         if ($ref->isa('DXNode')) {
 556                                                 dbg('chan', "PCPROT: $call is a node");
 557                                                 next;
 558                                         }
 559                                         my $rcall = $ref->mynode->call;
 560                                         dbg('chan', "PCPROT: already have $call on $rcall");
 561                                         next;
 562                                 }
 563
 564                                 $confmode = $confmode eq '*';
 565                                 DXNodeuser->new($self, $node, $call, $confmode, $here);
 566
 567                                 # add this station to the user database, if required
 568                                 $call =~ s/-\d+$//o;        # remove ssid for users
 569                                 my $user = DXUser->get_current($call);
 570                                 $user = DXUser->new($call) if !$user;
 571                                 $user->homenode($node->call) if !$user->homenode;
 572                                 $user->node($node->call);
 573                                 $user->lastin($main::systime) unless DXChannel->get($call);
 574                                 $user->put;
 575                         }
 576
 577                         # queue up any messages (look for privates only)
 578                         DXMsg::queue_msg(1) if $self->state eq 'normal';
 579 #                       broadcast_route($line, $self, $field[1]);
 580 #                       return;
 581                         last SWITCH;
 582                 }
 583
 584                 if ($pcno == 17) {              # remove a user
 585                         my $node = DXCluster->get_exact($field[2]);
 586                         my $dxchan;
 587                         if (!$node && ($dxchan = DXChannel->get($field[2]))) {
 588                                 # add it to the node table if it isn't present and it's
 589                                 # connected locally
 590                                 $node = DXNode->new($dxchan, $field[2], 0, 1, 5400);
 591                                 dbg('chan', "PCPROT: $field[2] no PC19 yet, autovivified as node");
 592 #                               broadcast_ak1a(pc19($dxchan, $node), $dxchan, $self) unless $dxchan->{isolate};
 593                         }
 594                         if ($field[1] eq $main::mycall || $field[2] eq $main::mycall) {
 595                                 dbg('chan', "PCPROT: trying to alter config on this node from outside!");
 596                                 return;
 597                         }
 598                         if ($field[1] eq $main::myalias && DXChannel->get($field[1])) {
 599                                 dbg('chan', "PCPROT: trying to disconnect sysop from outside!");
 600                                 return;
 601                         }
 602                         unless ($node) {
 603                                 dbg('chan', "PCPROT: Node $field[2] not in config");
 604                                 return;
 605                         }
 606                         unless ($node->isa('DXNode')) {
 607                                 dbg('chan', "PCPROT: $field[2] is not a node");
 608                                 return;
 609                         }
 610                         if ($node->dxchan != $self) {
 611                                 dbg('chan', "PCPROT: $field[2] came in on wrong channel");
 612                                 return;
 613                         }
 614                         if ($dxchan = DXChannel->get($field[1])) {
 615                                 dbg('chan', "PCPROT: $field[1] connected locally");
 616                                 return;
 617                         }
 618                         my $ref = DXCluster->get_exact($field[1]);
 619                         if ($ref) {
 620                                 if ($ref->mynode != $node) {
 621                                         dbg('chan', "PCPROT: $field[1] came in from wrong node $field[2]");
 622                                         return;
 623                                 }
 624                                 $ref->del;
 625                         } else {
 626                                 dbg('chan', "PCPROT: $field[1] not known" );
 627                                 return;
 628                         }
 629 #                       broadcast_route($line, $self, $field[2]);
 630 #                       return;
 631                         last SWITCH;
 632                 }
 633
 634                 if ($pcno == 18) {              # link request
 635                         $self->state('init');
 636
 637                         # first clear out any nodes on this dxchannel
 638                         my @gonenodes = map { $_->dxchan == $self ? $_ : () } DXNode::get_all();
 639                         foreach my $node (@gonenodes) {
 640                                 next if $node->dxchan == $DXProt::me;
 641                                 broadcast_ak1a(pc21($node->call, 'Gone, re-init') , $self) unless $self->{isolate};
 642                                 $node->del();
 643                         }
 644                         $self->send_local_config();
 645                         $self->send(pc20());
 646                         return;             # we don't pass these on
 647                 }
 648
 649                 if ($pcno == 19) {              # incoming cluster list
 650                         my $i;
 651                         my $newline = "PC19^";
 652                         for ($i = 1; $i < $#field-1; $i += 4) {
 653                                 my $here = $field[$i];
 654                                 my $call = uc $field[$i+1];
 655                                 my $confmode = $field[$i+2];
 656                                 my $ver = $field[$i+3];
 657                                 next unless defined $here && defined $confmode && is_callsign($call);
 658
 659                                 $ver = 5400 if !$ver && $allowzero;
 660
 661                                 # now check the call over
 662                                 my $node = DXCluster->get_exact($call);
 663                                 if ($node) {
 664                                         my $dxchan;
 665                                         if (($dxchan = DXChannel->get($call)) && $dxchan != $self) {
 666                                                 dbg('chan', "PCPROT: $call connected locally");
 667                                         }
 668                                     if ($node->dxchan != $self) {
 669                                                 dbg('chan', "PCPROT: $call come in on wrong channel");
 670                                                 next;
 671                                         }
 672                                         my $rcall = $node->mynode->call;
 673                                         dbg('chan', "PCPROT: already have $call on $rcall");
 674                                         next;
 675                                 }
 676
 677                                 # check for sane parameters
 678                                 next if $ver < 5000; # only works with version 5 software
 679                                 next if length $call < 3; # min 3 letter callsigns
 680
 681                                 # add it to the nodes table and outgoing line
 682                                 $newline .= "$here^$call^$confmode^$ver^";
 683                                 DXNode->new($self, $call, $confmode, $here, $ver);
 684
 685                                 # unbusy and stop and outgoing mail (ie if somehow we receive another PC19 without a disconnect)
 686                                 my $mref = DXMsg::get_busy($call);
 687                                 $mref->stop_msg($call) if $mref;
 688
 689                                 # add this station to the user database, if required (don't remove SSID from nodes)
 690                                 my $user = DXUser->get_current($call);
 691                                 if (!$user) {
 692                                         $user = DXUser->new($call);
 693                                         $user->sort('A');
 694                                         $user->priv(1);                   # I have relented and defaulted nodes
 695                                         $self->{priv} = 1;                # to user RCMDs allowed
 696                                         $user->homenode($call);
 697                                         $user->node($call);
 698                                 }
 699                                 $user->lastin($main::systime) unless DXChannel->get($call);
 700                                 $user->put;
 701                         }
 702
 703                         return if $newline eq "PC19^";
 704
 705                         # add hop count
 706                         $newline .=  get_hops(19) . "^";
 707                         $line = $newline;
 708                         last SWITCH;
 709                 }
 710
 711                 if ($pcno == 20) {              # send local configuration
 712                         $self->send_local_config();
 713                         $self->send(pc22());
 714                         $self->state('normal');
 715                         return;
 716                 }
 717
 718                 if ($pcno == 21) {              # delete a cluster from the list
 719                         my $call = uc $field[1];
 720                         if ($call ne $main::mycall) { # don't allow malicious buggers to disconnect me!
 721                                 my $node = DXCluster->get_exact($call);
 722                                 if ($node) {
 723                                         unless ($node->isa('DXNode')) {
 724                                                 dbg('chan', "PCPROT: $call is not a node");
 725                                                 return;
 726                                         }
 727                                         if ($call eq $self->{call}) {
 728                                                 dbg('chan', "PCPROT: Trying to disconnect myself with PC21");
 729                                                 return;
 730                                         }
 731                                         if ($node->dxchan != $self) {
 732                                                 dbg('chan', "PCPROT: $call come in on wrong channel");
 733                                                 return;
 734                                         }
 735                                         my $dxchan;
 736                                         if ($dxchan = DXChannel->get($call)) {
 737                                                 dbg('chan', "PCPROT: $call connected locally");
 738                                                 return;
 739                                         }
 740                                         $node->del();
 741                                 } else {
 742                                         dbg('chan', "PCPROT: $call not in table, dropped");
 743                                         return;
 744                                 }
 745                         } else {
 746                                 dbg('chan', "PCPROT: I WILL _NOT_ be disconnected!");
 747                                 return;
 748                         }
 749 #                       broadcast_route($line, $self, $call);
 750 #                       return;
 751                         last SWITCH;
 752                 }
 753
 754                 if ($pcno == 22) {
 755                         $self->state('normal');
 756                         return;
 757                 }
 758
 759                 if ($pcno == 23 || $pcno == 27) { # WWV info
 760
 761                         # route 'foreign' pc27s
 762                         if ($pcno == 27) {
 763                                 if ($field[8] ne $main::mycall) {
 764                                         $self->route($field[8], $line);
 765                                         return;
 766                                 }
 767                         }
 768
 769                         # do some de-duping
 770                         my $d = cltounix($field[1], sprintf("%02d18Z", $field[2]));
 771                         my $sfi = unpad($field[3]);
 772                         my $k = unpad($field[4]);
 773                         my $i = unpad($field[5]);
 774                         my ($r) = $field[6] =~ /R=(\d+)/;
 775                         $r = 0 unless $r;
 776                         if (($pcno == 23 && $d < $main::systime - $pc23_max_age) || $d > $main::systime + 1500 || $field[2] < 0 || $field[2] > 23) {
 777                                 dbg('chan', "PCPROT: WWV Date ($field[1] $field[2]) out of range");
 778                                 return;
 779                         }
 780                         if (Geomag::dup($d,$sfi,$k,$i,$field[6])) {
 781                                 dbg('chan', "PCPROT: Dup WWV Spot ignored\n");
 782                                 return;
 783                         }
 784                         $field[7] =~ s/-\d+$//o;            # remove spotter's ssid
 785
 786                         my $wwv = Geomag::update($d, $field[2], $sfi, $k, $i, @field[6..8], $r);
 787
 788                         my $rep;
 789                         eval {
 790                                 $rep = Local::wwv($self, $field[1], $field[2], $sfi, $k, $i, @field[6..8], $r);
 791                         };
 792 #                       dbg('local', "Local::wwv2 error $@") if $@;
 793                         return if $rep;
 794
 795                         # DON'T be silly and send on PC27s!
 796                         return if $pcno == 27;
 797
 798                         # broadcast to the eager world
 799                         send_wwv_spot($self, $line, $d, $field[2], $sfi, $k, $i, @field[6..8]);
 800                         return;
 801                 }
 802
 803                 if ($pcno == 24) {              # set here status
 804                         my $call = uc $field[1];
 805                         my $ref = DXCluster->get_exact($call);
 806                         $ref->here($field[2]) if $ref;
 807                         last SWITCH;
 808                 }
 809
 810                 if ($pcno == 25) {      # merge request
 811                         if ($field[1] ne $main::mycall) {
 812                                 $self->route($field[1], $line);
 813                                 return;
 814                         }
 815                         if ($field[2] eq $main::mycall) {
 816                                 dbg('chan', "PCPROT: Trying to merge to myself, ignored");
 817                                 return;
 818                         }
 819
 820                         Log('DXProt', "Merge request for $field[3] spots and $field[4] WWV from $field[1]");
 821
 822                         # spots
 823                         if ($field[3] > 0) {
 824                                 my @in = reverse Spot::search(1, undef, undef, 0, $field[3]);
 825                                 my $in;
 826                                 foreach $in (@in) {
 827                                         $self->send(pc26(@{$in}[0..4], $field[2]));
 828                                 }
 829                         }
 830
 831                         # wwv
 832                         if ($field[4] > 0) {
 833                                 my @in = reverse Geomag::search(0, $field[4], time, 1);
 834                                 my $in;
 835                                 foreach $in (@in) {
 836                                         $self->send(pc27(@{$in}[0..5], $field[2]));
 837                                 }
 838                         }
 839                         return;
 840                 }
 841
 842                 if (($pcno >= 28 && $pcno <= 33) || $pcno == 40 || $pcno == 42 || $pcno == 49) { # mail/file handling
 843                         if ($pcno == 49 || $field[1] eq $main::mycall) {
 844                                 DXMsg::process($self, $line);
 845                         } else {
 846                                 $self->route($field[1], $line) unless $self->is_clx;
 847                         }
 848                         return;
 849                 }
 850
 851                 if ($pcno == 34 || $pcno == 36) { # remote commands (incoming)
 852                         if ($field[1] eq $main::mycall) {
 853                                 my $ref = DXUser->get_current($field[2]);
 854                                 my $cref = DXCluster->get($field[2]);
 855                                 Log('rcmd', 'in', $ref->{priv}, $field[2], $field[3]);
 856                                 unless (!$cref || !$ref || $cref->mynode->call ne $ref->homenode) {    # not allowed to relay RCMDS!
 857                                         if ($ref->{priv}) {     # you have to have SOME privilege, the commands have further filtering
 858                                                 $self->{remotecmd} = 1; # for the benefit of any command that needs to know
 859                                                 my $oldpriv = $self->{priv};
 860                                                 $self->{priv} = $ref->{priv};     # assume the user's privilege level
 861                                                 my @in = (DXCommandmode::run_cmd($self, $field[3]));
 862                                                 $self->{priv} = $oldpriv;
 863                                                 for (@in) {
 864                                                         s/\s*$//og;
 865                                                         $self->send(pc35($main::mycall, $field[2], "$main::mycall:$_"));
 866                                                         Log('rcmd', 'out', $field[2], $_);
 867                                                 }
 868                                                 delete $self->{remotecmd};
 869                                         } else {
 870                                                 $self->send(pc35($main::mycall, $field[2], "$main::mycall:sorry...!"));
 871                                         }
 872                                 } else {
 873                                         $self->send(pc35($main::mycall, $field[2], "$main::mycall:your attempt is logged, Tut tut tut...!"));
 874                                 }
 875                         } else {
 876                                 my $ref = DXUser->get_current($field[1]);
 877                                 if ($ref && $ref->is_clx) {
 878                                         $self->route($field[1], pc84($field[2], $field[1], $field[2], $field[3]));
 879                                 } else {
 880                                         $self->route($field[1], $line);
 881                                 }
 882                         }
 883                         return;
 884                 }
 885
 886                 if ($pcno == 35) {              # remote command replies
 887                         if ($field[1] eq $main::mycall) {
 888                                 my $s = $rcmds{$field[2]};
 889                                 if ($s) {
 890                                         my $dxchan = DXChannel->get($s->{call});
 891                                         $dxchan->send($field[3]) if $dxchan;
 892                                         delete $rcmds{$field[2]} if !$dxchan;
 893                                 } else {
 894                                         # send unsolicited ones to the sysop
 895                                         my $dxchan = DXChannel->get($main::myalias);
 896                                         $dxchan->send($field[3]) if $dxchan;
 897                                 }
 898                         } else {
 899                                 my $ref = DXUser->get_current($field[1]);
 900                                 if ($ref && $ref->is_clx) {
 901                                         $self->route($field[1], pc85($field[2], $field[1], $field[2], $field[3]));
 902                                 } else {
 903                                         $self->route($field[1], $line);
 904                                 }
 905                         }
 906                         return;
 907                 }
 908
 909                 # for pc 37 see 44 onwards
 910
 911                 if ($pcno == 38) {              # node connected list from neighbour
 912                         return;
 913                 }
 914
 915                 if ($pcno == 39) {              # incoming disconnect
 916                         if ($field[1] eq $self->{call}) {
 917                                 $self->disconnect(1);
 918                         } else {
 919                                 dbg('chan', "PCPROT: came in on wrong channel");
 920                         }
 921                         return;
 922                 }
 923
 924                 if ($pcno == 41) {              # user info
 925                         # add this station to the user database, if required
 926                         my $user = DXUser->get_current($field[1]);
 927                         $user = DXUser->new($field[1]) if !$user;
 928
 929                         if ($field[2] == 1) {
 930                                 $user->name($field[3]);
 931                         } elsif ($field[2] == 2) {
 932                                 $user->qth($field[3]);
 933                         } elsif ($field[2] == 3) {
 934                                 my ($lat, $long) = DXBearing::stoll($field[3]);
 935                                 $user->lat($lat);
 936                                 $user->long($long);
 937                                 $user->qra(DXBearing::lltoqra($lat, $long)) unless $user->qra && DXBearing::is_qra($user->qra);
 938                         } elsif ($field[2] == 4) {
 939                                 $user->homenode($field[3]);
 940                         }
 941                         $user->lastoper($main::systime);   # to cut down on excessive for/opers being generated
 942                         $user->put;
 943                         last SWITCH;
 944                 }
 945                 if ($pcno == 43) {
 946                         last SWITCH;
 947                 }
 948                 if ($pcno == 37 || $pcno == 44 || $pcno == 45 || $pcno == 46 || $pcno == 47 || $pcno == 48) {
 949                         DXDb::process($self, $line);
 950                         return;
 951                 }
 952
 953                 if ($pcno == 50) {              # keep alive/user list
 954                         my $node = DXCluster->get_exact($field[1]);
 955                         if ($node) {
 956                                 return unless $node->isa('DXNode');
 957                                 return unless $node->dxchan == $self;
 958                                 $node->update_users($field[2]);
 959                         }
 960                         last SWITCH;
 961                 }
 962
 963                 if ($pcno == 51) {              # incoming ping requests/answers
 964
 965                         # is it for us?
 966                         if ($field[1] eq $main::mycall) {
 967                                 my $flag = $field[3];
 968                                 if ($flag == 1) {
 969                                         $self->send(pc51($field[2], $field[1], '0'));
 970                                 } else {
 971                                         # it's a reply, look in the ping list for this one
 972                                         my $ref = $pings{$field[2]};
 973                                         if ($ref) {
 974                                                 my $tochan =  DXChannel->get($field[2]);
 975                                                 while (@$ref) {
 976                                                         my $r = shift @$ref;
 977                                                         my $dxchan = DXChannel->get($r->{call});
 978                                                         next unless $dxchan;
 979                                                         my $t = tv_interval($r->{t}, [ gettimeofday ]);
 980                                                         if ($dxchan->is_user) {
 981                                                                 my $s = sprintf "%.2f", $t;
 982                                                                 my $ave = sprintf "%.2f", $tochan ? ($tochan->{pingave} || $t) : $t;
 983                                                                 $dxchan->send($dxchan->msg('pingi', $field[2], $s, $ave))
 984                                                         } elsif ($dxchan->is_node) {
 985                                                                 if ($tochan) {
 986                                                                         $tochan->{nopings} = $tochan->user->nopings || 2; # pump up the timer
 987                                                                         push @{$tochan->{pingtime}}, $t;
 988                                                                         shift @{$tochan->{pingtime}} if @{$tochan->{pingtime}} > 6;
 989                                                                         my $st;
 990                                                                         for (@{$tochan->{pingtime}}) {
 991                                                                                 $st += $_;
 992                                                                         }
 993                                                                         $tochan->{pingave} = $st / @{$tochan->{pingtime}};
 994                                                                 }
 995                                                         }
 996                                                 }
 997                                         }
 998                                 }
 999                         } else {
1000                                 # route down an appropriate thingy
1001                                 $self->route($field[1], $line);
1002                         }
1003                         return;
1004                 }
1005
1006                 if ($pcno == 75) {              # dunno but route it
1007                         if ($field[1] ne $main::mycall) {
1008                                 $self->route($field[1], $line);
1009                         }
1010                         return;
1011                 }
1012
1013                 if ($pcno == 73) {  # WCY broadcasts
1014
1015                         # do some de-duping
1016                         my $d = cltounix($field[1], sprintf("%02d18Z", $field[2]));
1017                         if (($pcno == 23 && $d < $main::systime - $pc23_max_age) || $d > $main::systime + 1500 || $field[2] < 0 || $field[2] > 23) {
1018                                 dbg('chan', "PCPROT: WCY Date ($field[1] $field[2]) out of range");
1019                                 return;
1020                         }
1021                         @field = map { unpad($_) } @field;
1022                         if (WCY::dup($d,@field[3..7])) {
1023                                 dbg('chan', "PCPROT: Dup WCY Spot ignored\n");
1024                                 return;
1025                         }
1026
1027                         my $wcy = WCY::update($d, @field[2..12]);
1028
1029                         my $rep;
1030                         eval {
1031                                 $rep = Local::wwv($self, @field[1..12]);
1032                         };
1033                         # dbg('local', "Local::wcy error $@") if $@;
1034                         return if $rep;
1035
1036                         # broadcast to the eager world
1037                         send_wcy_spot($self, $line, $d, @field[2..12]);
1038                         return;
1039                 }
1040
1041                 if ($pcno == 84) { # remote commands (incoming)
1042                         if ($field[1] eq $main::mycall) {
1043                                 my $ref = DXUser->get_current($field[2]);
1044                                 my $cref = DXCluster->get($field[2]);
1045                                 Log('rcmd', 'in', $ref->{priv}, $field[2], $field[4]);
1046                                 unless ($field[4] =~ /rcmd/i || !$cref || !$ref || $cref->mynode->call ne $ref->homenode) {    # not allowed to relay RCMDS!
1047                                         if ($ref->{priv}) {     # you have to have SOME privilege, the commands have further filtering
1048                                                 $self->{remotecmd} = 1; # for the benefit of any command that needs to know
1049                                                 my $oldpriv = $self->{priv};
1050                                                 $self->{priv} = $ref->{priv};     # assume the user's privilege level
1051                                                 my @in = (DXCommandmode::run_cmd($self, $field[4]));
1052                                                 $self->{priv} = $oldpriv;
1053                                                 for (@in) {
1054                                                         s/\s*$//og;
1055                                                         $self->send(pc85($main::mycall, $field[2], $field[3], "$main::mycall:$_"));
1056                                                         Log('rcmd', 'out', $field[2], $_);
1057                                                 }
1058                                                 delete $self->{remotecmd};
1059                                         } else {
1060                                                 $self->send(pc85($main::mycall, $field[2], $field[3], "$main::mycall:sorry...!"));
1061                                         }
1062                                 } else {
1063                                         $self->send(pc85($main::mycall, $field[2], $field[3],"$main::mycall:your attempt is logged, Tut tut tut...!"));
1064                                 }
1065                         } else {
1066                                 my $ref = DXUser->get_current($field[1]);
1067                                 if ($ref && $ref->is_clx) {
1068                                         $self->route($field[1], $line);
1069                                 } else {
1070                                         $self->route($field[1], pc34($field[2], $field[1], $field[4]));
1071                                 }
1072                         }
1073                         return;
1074                 }
1075
1076                 if ($pcno == 85) {              # remote command replies
1077                         if ($field[1] eq $main::mycall) {
1078                                 my $dxchan = DXChannel->get($field[3]);
1079                                 if ($dxchan) {
1080                                         $dxchan->send($field[4]);
1081                                 } else {
1082                                         my $s = $rcmds{$field[2]};
1083                                         if ($s) {
1084                                                 $dxchan = DXChannel->get($s->{call});
1085                                                 $dxchan->send($field[4]) if $dxchan;
1086                                                 delete $rcmds{$field[2]} if !$dxchan;
1087                                         } else {
1088                                                 # send unsolicited ones to the sysop
1089                                                 my $dxchan = DXChannel->get($main::myalias);
1090                                                 $dxchan->send($field[4]) if $dxchan;
1091                                         }
1092                                 }
1093                         } else {
1094                                 my $ref = DXUser->get_current($field[1]);
1095                                 if ($ref && $ref->is_clx) {
1096                                         $self->route($field[1], $line);
1097                                 } else {
1098                                         $self->route($field[1], pc35($field[2], $field[1], $field[4]));
1099                                 }
1100                         }
1101                         return;
1102                 }
1103         }
1104
1105         # if get here then rebroadcast the thing with its Hop count decremented (if
1106         # there is one). If it has a hop count and it decrements to zero then don't
1107         # rebroadcast it.
1108         #
1109         # NOTE - don't arrive here UNLESS YOU WANT this lump of protocol to be
1110         #        REBROADCAST!!!!
1111         #
1112
1113         unless ($self->{isolate}) {
1114                 broadcast_ak1a($line, $self); # send it to everyone but me
1115         }
1116 }
1117
1118 #
1119 # This is called from inside the main cluster processing loop and is used
1120 # for despatching commands that are doing some long processing job
1121 #
1122 sub process
1123 {
1124         my $t = time;
1125         my @dxchan = DXChannel->get_all();
1126         my $dxchan;
1127
1128         foreach $dxchan (@dxchan) {
1129                 next unless $dxchan->is_node();
1130                 next if $dxchan == $me;
1131
1132                 # send a pc50 out on this channel
1133                 if ($t >= $dxchan->{pc50_t} + $DXProt::pc50_interval) {
1134                         $dxchan->send(pc50(scalar DXChannel::get_all_users));
1135                         $dxchan->{pc50_t} = $t;
1136                 }
1137
1138                 # send a ping out on this channel
1139                 if ($dxchan->{pingint} && $t >= $dxchan->{pingint} + $dxchan->{lastping}) {
1140                         if ($dxchan->{nopings} <= 0) {
1141                                 $dxchan->disconnect;
1142                         } else {
1143                                 addping($main::mycall, $dxchan->call);
1144                                 $dxchan->{nopings} -= 1;
1145                                 $dxchan->{lastping} = $t;
1146                         }
1147                 }
1148         }
1149
1150         my $key;
1151         my $val;
1152         my $cutoff;
1153         if ($main::systime - 3600 > $last_hour) {
1154 #               Spot::process;
1155 #               Geomag::process;
1156 #               AnnTalk::process;
1157                 $last_hour = $main::systime;
1158         }
1159 }
1160
1161 #
1162 # finish up a pc context
1163 #
1164
1165 #
1166 # some active measures
1167 #
1168 sub send_route
1169 {
1170         my $self = shift;
1171         my $line = shift;
1172         my @dxchan = DXChannel::get_all_nodes();
1173         my $dxchan;
1174
1175         # send it if it isn't the except list and isn't isolated and still has a hop count
1176         # taking into account filtering and so on
1177         foreach $dxchan (@dxchan) {
1178                 my $routeit;
1179                 my ($filter, $hops);
1180
1181                 if ($dxchan->{routefilter}) {
1182                         ($filter, $hops) = $dxchan->{routefilter}->it($self->{call}, @_);
1183                          next unless $filter;
1184                 }
1185                 next if $dxchan == $self;
1186                 if ($hops) {
1187                         $routeit = $line;
1188                         $routeit =~ s/\^H\d+\^\~$/\^H$hops\^\~/;
1189                 } else {
1190                         $routeit = adjust_hops($dxchan, $line);  # adjust its hop count by node name
1191                         next unless $routeit;
1192                 }
1193                 if ($filter) {
1194                         $dxchan->send($routeit) if $routeit;
1195                 } else {
1196                         $dxchan->send($routeit) unless $dxchan->{isolate} || $self->{isolate};
1197                 }
1198         }
1199 }
1200
1201 sub send_dx_spot
1202 {
1203         my $self = shift;
1204         my $line = shift;
1205         my @dxchan = DXChannel->get_all();
1206         my $dxchan;
1207
1208         # send it if it isn't the except list and isn't isolated and still has a hop count
1209         # taking into account filtering and so on
1210         foreach $dxchan (@dxchan) {
1211                 my $routeit;
1212                 my ($filter, $hops);
1213
1214                 if ($dxchan->{spotsfilter}) {
1215                     ($filter, $hops) = $dxchan->{spotsfilter}->it(@_, $self->{call} );
1216                         next unless $filter;
1217                 }
1218
1219                 if ($dxchan->is_node) {
1220                         next if $dxchan == $self;
1221                         if ($hops) {
1222                                 $routeit = $line;
1223                                 $routeit =~ s/\^H\d+\^\~$/\^H$hops\^\~/;
1224                         } else {
1225                                 $routeit = adjust_hops($dxchan, $line);  # adjust its hop count by node name
1226                                 next unless $routeit;
1227                         }
1228                         if ($filter) {
1229                                 $dxchan->send($routeit) if $routeit;
1230                         } else {
1231                                 $dxchan->send($routeit) unless $dxchan->{isolate} || $self->{isolate};
1232                         }
1233                 } elsif ($dxchan->is_user && $dxchan->{dx}) {
1234                         my $buf = Spot::formatb($dxchan->{user}->wantgrid, $_[0], $_[1], $_[2], $_[3], $_[4]);
1235                         $buf .= "\a\a" if $dxchan->{beep};
1236                         $buf =~ s/\%5E/^/g;
1237                         if ($dxchan->{state} eq 'prompt' || $dxchan->{state} eq 'talk') {
1238                                 $dxchan->send($buf);
1239                         } else {
1240                                 $dxchan->delay($buf);
1241                         }
1242                 }
1243         }
1244 }
1245
1246 sub send_wwv_spot
1247 {
1248         my $self = shift;
1249         my $line = shift;
1250         my @dxchan = DXChannel->get_all();
1251         my $dxchan;
1252         my ($wwv_dxcc, $wwv_itu, $wwv_cq, $org_dxcc, $org_itu, $org_cq) = (0..0);
1253         my @dxcc = Prefix::extract($_[7]);
1254         if (@dxcc > 0) {
1255                 $wwv_dxcc = $dxcc[1]->dxcc;
1256                 $wwv_itu = $dxcc[1]->itu;
1257                 $wwv_cq = $dxcc[1]->cq;
1258         }
1259         @dxcc = Prefix::extract($_[8]);
1260         if (@dxcc > 0) {
1261                 $org_dxcc = $dxcc[1]->dxcc;
1262                 $org_itu = $dxcc[1]->itu;
1263                 $org_cq = $dxcc[1]->cq;
1264         }
1265
1266         # send it if it isn't the except list and isn't isolated and still has a hop count
1267         # taking into account filtering and so on
1268         foreach $dxchan (@dxchan) {
1269                 my $routeit;
1270                 my ($filter, $hops);
1271
1272                 if ($dxchan->{wwvfilter}) {
1273                         ($filter, $hops) = $dxchan->{wwvfilter}->it(@_, $self->{call}, $wwv_dxcc, $wwv_itu, $wwv_cq, $org_dxcc, $org_itu, $org_cq);
1274                          next unless $filter;
1275                 }
1276                 if ($dxchan->is_node) {
1277                         next if $dxchan == $self;
1278                         if ($hops) {
1279                                 $routeit = $line;
1280                                 $routeit =~ s/\^H\d+\^\~$/\^H$hops\^\~/;
1281                         } else {
1282                                 $routeit = adjust_hops($dxchan, $line);  # adjust its hop count by node name
1283                                 next unless $routeit;
1284                         }
1285                         if ($filter) {
1286                                 $dxchan->send($routeit) if $routeit;
1287                         } else {
1288                                 $dxchan->send($routeit) unless $dxchan->{isolate} || $self->{isolate};
1289
1290                         }
1291                 } elsif ($dxchan->is_user && $dxchan->{wwv}) {
1292                         my $buf = "WWV de $_[6] <$_[1]>:   SFI=$_[2], A=$_[3], K=$_[4], $_[5]";
1293                         $buf .= "\a\a" if $dxchan->{beep};
1294                         if ($dxchan->{state} eq 'prompt' || $dxchan->{state} eq 'talk') {
1295                                 $dxchan->send($buf);
1296                         } else {
1297                                 $dxchan->delay($buf);
1298                         }
1299                 }
1300         }
1301 }
1302
1303 sub send_wcy_spot
1304 {
1305         my $self = shift;
1306         my $line = shift;
1307         my @dxchan = DXChannel->get_all();
1308         my $dxchan;
1309         my ($wcy_dxcc, $wcy_itu, $wcy_cq, $org_dxcc, $org_itu, $org_cq) = (0..0);
1310         my @dxcc = Prefix::extract($_[11]);
1311         if (@dxcc > 0) {
1312                 $wcy_dxcc = $dxcc[1]->dxcc;
1313                 $wcy_itu = $dxcc[1]->itu;
1314                 $wcy_cq = $dxcc[1]->cq;
1315         }
1316         @dxcc = Prefix::extract($_[12]);
1317         if (@dxcc > 0) {
1318                 $org_dxcc = $dxcc[1]->dxcc;
1319                 $org_itu = $dxcc[1]->itu;
1320                 $org_cq = $dxcc[1]->cq;
1321         }
1322
1323         # send it if it isn't the except list and isn't isolated and still has a hop count
1324         # taking into account filtering and so on
1325         foreach $dxchan (@dxchan) {
1326                 my $routeit;
1327                 my ($filter, $hops);
1328
1329                 if ($dxchan->{wcyfilter}) {
1330                         ($filter, $hops) = $dxchan->{wcyfilter}->it(@_, $self->{call}, $wcy_dxcc, $wcy_itu, $wcy_cq, $org_dxcc, $org_itu, $org_cq);
1331                          next unless $filter;
1332                 }
1333                 if ($dxchan->is_clx || $dxchan->is_spider || $dxchan->is_dxnet) {
1334                         next if $dxchan == $self;
1335                         if ($hops) {
1336                                 $routeit = $line;
1337                                 $routeit =~ s/\^H\d+\^\~$/\^H$hops\^\~/;
1338                         } else {
1339                                 $routeit = adjust_hops($dxchan, $line);  # adjust its hop count by node name
1340                                 next unless $routeit;
1341                         }
1342                         if ($filter) {
1343                                 $dxchan->send($routeit) if $routeit;
1344                         } else {
1345                                 $dxchan->send($routeit) unless $dxchan->{isolate} || $self->{isolate};
1346                         }
1347                 } elsif ($dxchan->is_user && $dxchan->{wcy}) {
1348                         my $buf = "WCY de $_[10] <$_[1]> : K=$_[4] expK=$_[5] A=$_[3] R=$_[6] SFI=$_[2] SA=$_[7] GMF=$_[8] Au=$_[9]";
1349                         $buf .= "\a\a" if $dxchan->{beep};
1350                         if ($dxchan->{state} eq 'prompt' || $dxchan->{state} eq 'talk') {
1351                                 $dxchan->send($buf);
1352                         } else {
1353                                 $dxchan->delay($buf);
1354                         }
1355                 }
1356         }
1357 }
1358
1359 # send an announce
1360 sub send_announce
1361 {
1362         my $self = shift;
1363         my $line = shift;
1364         my @dxchan = DXChannel->get_all();
1365         my $dxchan;
1366         my $text = unpad($_[2]);
1367         my $target;
1368         my $to = 'To ';
1369
1370         if ($_[3] eq '*') {     # sysops
1371                 $target = "SYSOP";
1372         } elsif ($_[3] gt ' ') { # speciality list handling
1373                 my ($name) = split /\./, $_[3];
1374                 $target = "$name"; # put the rest in later (if bothered)
1375         }
1376
1377         if ($_[5] eq '1') {
1378                 $target = "WX";
1379                 $to = '';
1380         }
1381         $target = "ALL" if !$target;
1382
1383         Log('ann', $target, $_[0], $text);
1384
1385         # obtain country codes etc
1386         my ($ann_dxcc, $ann_itu, $ann_cq, $org_dxcc, $org_itu, $org_cq) = (0..0);
1387         my @dxcc = Prefix::extract($_[0]);
1388         if (@dxcc > 0) {
1389                 $ann_dxcc = $dxcc[1]->dxcc;
1390                 $ann_itu = $dxcc[1]->itu;
1391                 $ann_cq = $dxcc[1]->cq;
1392         }
1393         @dxcc = Prefix::extract($_[4]);
1394         if (@dxcc > 0) {
1395                 $org_dxcc = $dxcc[1]->dxcc;
1396                 $org_itu = $dxcc[1]->itu;
1397                 $org_cq = $dxcc[1]->cq;
1398         }
1399
1400         # send it if it isn't the except list and isn't isolated and still has a hop count
1401         # taking into account filtering and so on
1402         foreach $dxchan (@dxchan) {
1403                 my $routeit;
1404                 my ($filter, $hops);
1405
1406                 if ($dxchan->{annfilter}) {
1407                         ($filter, $hops) = $dxchan->{annfilter}->it(@_, $self->{call}, $ann_dxcc, $ann_itu, $ann_cq, $org_dxcc, $org_itu, $org_cq);
1408                         next unless $filter;
1409                 }
1410                 if ($dxchan->is_node && $_[1] ne $main::mycall) {  # i.e not specifically routed to me
1411                         next if $dxchan == $self;
1412                         if ($hops) {
1413                                 $routeit = $line;
1414                                 $routeit =~ s/\^H\d+\^\~$/\^H$hops\^\~/;
1415                         } else {
1416                                 $routeit = adjust_hops($dxchan, $line);  # adjust its hop count by node name
1417                                 next unless $routeit;
1418                         }
1419                         if ($filter) {
1420                                 $dxchan->send($routeit) if $routeit;
1421                         } else {
1422                                 $dxchan->send($routeit) unless $dxchan->{isolate} || $self->{isolate};
1423
1424                         }
1425                 } elsif ($dxchan->is_user) {
1426                         unless ($dxchan->{ann}) {
1427                                 next if $_[0] ne $main::myalias && $_[0] ne $main::mycall;
1428                         }
1429                         next if $target eq 'SYSOP' && $dxchan->{priv} < 5;
1430                         my $buf = "$to$target de $_[0]: $text";
1431                         $buf =~ s/\%5E/^/g;
1432                         $buf .= "\a\a" if $dxchan->{beep};
1433                         if ($dxchan->{state} eq 'prompt' || $dxchan->{state} eq 'talk') {
1434                                 $dxchan->send($buf);
1435                         } else {
1436                                 $dxchan->delay($buf);
1437                         }
1438                 }
1439         }
1440 }
1441
1442 sub send_local_config
1443 {
1444         my $self = shift;
1445         my $n;
1446         my @nodes;
1447         my @localnodes;
1448         my @remotenodes;
1449
1450         # send our nodes
1451         if ($self->{isolate}) {
1452                 @localnodes = (DXCluster->get_exact($main::mycall));
1453         } else {
1454                 # create a list of all the nodes that are not connected to this connection
1455                 # and are not themselves isolated, this to make sure that isolated nodes
1456         # don't appear outside of this node
1457                 @nodes = DXNode::get_all();
1458                 @nodes = grep { $_->{call} ne $main::mycall } @nodes;
1459                 @nodes = grep { $_->dxchan != $self } @nodes if @nodes;
1460                 @nodes = grep { !$_->dxchan->{isolate} } @nodes if @nodes;
1461                 @localnodes = grep { $_->dxchan->{call} eq $_->{call} } @nodes if @nodes;
1462                 unshift @localnodes, DXCluster->get_exact($main::mycall);
1463                 @remotenodes = grep { $_->dxchan->{call} ne $_->{call} } @nodes if @nodes;
1464         }
1465
1466         my @s = $me->pc19(@localnodes, @remotenodes);
1467         for (@s) {
1468                 my $routeit = adjust_hops($self, $_);
1469                 $self->send($routeit) if $routeit;
1470         }
1471
1472         # get all the users connected on the above nodes and send them out
1473         foreach $n (@localnodes, @remotenodes) {
1474                 my @users = values %{$n->list};
1475                 my @s = pc16($n, @users);
1476                 for (@s) {
1477                         my $routeit = adjust_hops($self, $_);
1478                         $self->send($routeit) if $routeit;
1479                 }
1480         }
1481 }
1482
1483 #
1484 # route a message down an appropriate interface for a callsign
1485 #
1486 # is called route(to, pcline);
1487 #
1488 sub route
1489 {
1490         my ($self, $call, $line) = @_;
1491
1492         if (ref $self && $call eq $self->{call}) {
1493                 dbg('chan', "PCPROT: Trying to route back to source, dropped");
1494                 return;
1495         }
1496
1497         # always send it down the local interface if available
1498         my $dxchan = DXChannel->get($call);
1499         unless ($dxchan) {
1500                 my $cl = DXCluster->get_exact($call);
1501                 $dxchan = $cl->dxchan if $cl;
1502                 if (ref $dxchan) {
1503                         if (ref $self && $dxchan eq $self) {
1504                                 dbg('chan', "PCPROT: Trying to route back to source, dropped");
1505                                 return;
1506                         }
1507                 }
1508         }
1509         if ($dxchan) {
1510                 my $routeit = adjust_hops($dxchan, $line);   # adjust its hop count by node name
1511                 if ($routeit) {
1512                         $dxchan->send($routeit);
1513                 }
1514         } else {
1515                 dbg('chan', "PCPROT: No route available, dropped");
1516         }
1517 }
1518
1519 # broadcast a message to all clusters taking into account isolation
1520 # [except those mentioned after buffer]
1521 sub broadcast_ak1a
1522 {
1523         my $s = shift;                          # the line to be rebroadcast
1524         my @except = @_;                        # to all channels EXCEPT these (dxchannel refs)
1525         my @dxchan = DXChannel::get_all_nodes();
1526         my $dxchan;
1527
1528         # send it if it isn't the except list and isn't isolated and still has a hop count
1529         foreach $dxchan (@dxchan) {
1530                 next if grep $dxchan == $_, @except;
1531                 next if $dxchan == $me;
1532
1533                 my $routeit = adjust_hops($dxchan, $s);      # adjust its hop count by node name
1534                 $dxchan->send($routeit) unless $dxchan->{isolate} || !$routeit;
1535         }
1536 }
1537
1538 # broadcast a message to all clusters ignoring isolation
1539 # [except those mentioned after buffer]
1540 sub broadcast_all_ak1a
1541 {
1542         my $s = shift;                          # the line to be rebroadcast
1543         my @except = @_;                        # to all channels EXCEPT these (dxchannel refs)
1544         my @dxchan = DXChannel::get_all_nodes();
1545         my $dxchan;
1546
1547         # send it if it isn't the except list and isn't isolated and still has a hop count
1548         foreach $dxchan (@dxchan) {
1549                 next if grep $dxchan == $_, @except;
1550                 next if $dxchan == $me;
1551
1552                 my $routeit = adjust_hops($dxchan, $s);      # adjust its hop count by node name
1553                 $dxchan->send($routeit);
1554         }
1555 }
1556
1557 # broadcast to all users
1558 # storing the spot or whatever until it is in a state to receive it
1559 sub broadcast_users
1560 {
1561         my $s = shift;                          # the line to be rebroadcast
1562         my $sort = shift;           # the type of transmission
1563         my $fref = shift;           # a reference to an object to filter on
1564         my @except = @_;                        # to all channels EXCEPT these (dxchannel refs)
1565         my @dxchan = DXChannel::get_all_users();
1566         my $dxchan;
1567         my @out;
1568
1569         foreach $dxchan (@dxchan) {
1570                 next if grep $dxchan == $_, @except;
1571                 push @out, $dxchan;
1572         }
1573         broadcast_list($s, $sort, $fref, @out);
1574 }
1575
1576 # broadcast to a list of users
1577 sub broadcast_list
1578 {
1579         my $s = shift;
1580         my $sort = shift;
1581         my $fref = shift;
1582         my $dxchan;
1583
1584         foreach $dxchan (@_) {
1585                 my $filter = 1;
1586                 next if $dxchan == $me;
1587
1588                 if ($sort eq 'dx') {
1589                     next unless $dxchan->{dx};
1590                         ($filter) = $dxchan->{spotsfilter}->it(@{$fref}) if ref $fref;
1591                         next unless $filter;
1592                 }
1593                 next if $sort eq 'ann' && !$dxchan->{ann};
1594                 next if $sort eq 'wwv' && !$dxchan->{wwv};
1595                 next if $sort eq 'wcy' && !$dxchan->{wcy};
1596                 next if $sort eq 'wx' && !$dxchan->{wx};
1597
1598                 $s =~ s/\a//og unless $dxchan->{beep};
1599
1600                 if ($dxchan->{state} eq 'prompt' || $dxchan->{state} eq 'talk') {
1601                         $dxchan->send($s);
1602                 } else {
1603                         $dxchan->delay($s);
1604                 }
1605         }
1606 }
1607
1608
1609 #
1610 # obtain the hops from the list for this callsign and pc no
1611 #
1612
1613 sub get_hops
1614 {
1615         my $pcno = shift;
1616         my $hops = $DXProt::hopcount{$pcno};
1617         $hops = $DXProt::def_hopcount if !$hops;
1618         return "H$hops";
1619 }
1620
1621 #
1622 # adjust the hop count on a per node basis using the user loadable
1623 # hop table if available or else decrement an existing one
1624 #
1625
1626 sub adjust_hops
1627 {
1628         my $self = shift;
1629         my $s = shift;
1630         my $call = $self->{call};
1631         my $hops;
1632
1633         if (($hops) = $s =~ /\^H(\d+)\^~?$/o) {
1634                 my ($pcno) = $s =~ /^PC(\d\d)/o;
1635                 confess "$call called adjust_hops with '$s'" unless $pcno;
1636                 my $ref = $nodehops{$call} if %nodehops;
1637                 if ($ref) {
1638                         my $newhops = $ref->{$pcno};
1639                         return "" if defined $newhops && $newhops == 0;
1640                         $newhops = $ref->{default} unless $newhops;
1641                         return "" if defined $newhops && $newhops == 0;
1642                         $newhops = $hops if !$newhops;
1643                         $s =~ s/\^H(\d+)(\^~?)$/\^H$newhops$2/ if $newhops;
1644                 } else {
1645                         # simply decrement it
1646                         $hops--;
1647                         return "" if !$hops;
1648                         $s =~ s/\^H(\d+)(\^~?)$/\^H$hops$2/ if $hops;
1649                 }
1650         }
1651         return $s;
1652 }
1653
1654 #
1655 # load hop tables
1656 #
1657 sub load_hops
1658 {
1659         my $self = shift;
1660         return $self->msg('lh1') unless -e "$main::data/hop_table.pl";
1661         do "$main::data/hop_table.pl";
1662         return $@ if $@;
1663         return 0;
1664 }
1665
1666
1667 # add a ping request to the ping queues
1668 sub addping
1669 {
1670         my ($from, $to) = @_;
1671         my $ref = $pings{$to} || [];
1672         my $r = {};
1673         $r->{call} = $from;
1674         $r->{t} = [ gettimeofday ];
1675         route(undef, $to, pc51($to, $main::mycall, 1));
1676         push @$ref, $r;
1677         $pings{$to} = $ref;
1678 }
1679
1680 # add a rcmd request to the rcmd queues
1681 sub addrcmd
1682 {
1683         my ($self, $to, $cmd) = @_;
1684
1685         my $r = {};
1686         $r->{call} = $self->{call};
1687         $r->{t} = $main::systime;
1688         $r->{cmd} = $cmd;
1689         $rcmds{$to} = $r;
1690
1691         my $ref = DXCluster->get_exact($to);
1692     if ($ref && $ref->dxchan && $ref->dxchan->is_clx) {
1693                 route(undef, $to, pc84($main::mycall, $to, $self->{call}, $cmd));
1694         } else {
1695                 route(undef, $to, pc34($main::mycall, $to, $cmd));
1696         }
1697 }
1698
1699 sub disconnect
1700 {
1701         my $self = shift;
1702         my $pc39flag = shift;
1703         my $call = $self->call;
1704
1705         unless ($pc39flag && $pc39flag == 1) {
1706                 $self->send_now("D", DXProt::pc39($main::mycall, $self->msg('disc1', "System Op")));
1707         }
1708
1709         # unbusy and stop and outgoing mail
1710         my $mref = DXMsg::get_busy($call);
1711         $mref->stop_msg($call) if $mref;
1712
1713         # create a list of all the nodes that have gone and delete them from the table
1714         my @nodes;
1715         foreach my $node (grep { $_->dxchancall eq $call } DXNode::get_all) {
1716                 next if $node->call eq $call;
1717                 next if $node->call eq $main::mycall;
1718                 push @nodes, $node->call;
1719                 $node->del;
1720         }
1721
1722         # broadcast to all other nodes that all the nodes connected to via me are gone
1723         unless ($pc39flag && $pc39flag == 2) {
1724                 unless ($self->{isolate}) {
1725                         push @nodes, $call;
1726                         for (@nodes) {
1727                                 broadcast_ak1a(pc21($_, 'Gone.'), $self);
1728                         }
1729                 }
1730         }
1731
1732         # remove this node from the tables
1733         my $node = DXCluster->get_exact($call);
1734         $node->del if $node;
1735
1736         # remove outstanding pings
1737         delete $pings{$call};
1738
1739         # I was the last node visited
1740     $self->user->node($main::mycall);
1741
1742         # send info to all logged in thingies
1743         $self->tell_login('logoutn');
1744
1745         Log('DXProt', $call . " Disconnected");
1746
1747         $self->SUPER::disconnect;
1748 }
1749
1750
1751 #
1752 # send a talk message to this thingy
1753 #
1754 sub talk
1755 {
1756         my ($self, $from, $to, $via, $line) = @_;
1757
1758         $line =~ s/\^/\\5E/g;                   # remove any ^ characters
1759         $self->send(DXProt::pc10($from, $to, $via, $line));
1760         Log('talk', $self->call, $from, $via?$via:$main::mycall, $line);
1761 }
1762 1;
1763 __END__