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
  33 use strict;
  34 use vars qw($me $pc11_max_age $pc23_max_age
  35                         $last_hour %pings %rcmds
  36                         %nodehops @baddx $baddxfn
  37                         $allowzero $decode_dk0wcy $send_opernam @checklist);
  38
  39 $me = undef;                                    # the channel id for this cluster
  40 $pc11_max_age = 1*3600;                 # the maximum age for an incoming 'real-time' pc11
  41 $pc23_max_age = 1*3600;                 # the maximum age for an incoming 'real-time' pc23
  42
  43 $last_hour = time;                              # last time I did an hourly periodic update
  44 %pings = ();                    # outstanding ping requests outbound
  45 %rcmds = ();                    # outstanding rcmd requests outbound
  46 %nodehops = ();                 # node specific hop control
  47 @baddx = ();                    # list of illegal spotted callsigns
  48
  49
  50 $baddxfn = "$main::data/baddx.pl";
  51
  52 @checklist =
  53 (
  54  [ qw(c c m p bc c) ],                  # pc10
  55  [ qw(f m d t m c c h) ],               # pc11
  56  [ qw(c bc m bp bm p h) ],              # pc12
  57  [ qw(c h) ],                                   #
  58  [ qw(c h) ],                                   #
  59  [ qw(c m h) ],                                 #
  60  undef ,                                                # pc16 has to be validated manually
  61  [ qw(c c h) ],                                 # pc17
  62  [ qw(m n) ],                                   # pc18
  63  undef ,                                                # pc19 has to be validated manually
  64  undef ,                                                # pc20 no validation
  65  [ qw(c m h) ],                                 # pc21
  66  undef ,                                                # pc22 no validation
  67  [ qw(d n n n n m c c h) ],             # pc23
  68  [ qw(c p h) ],                                 # pc24
  69  [ qw(c c n n) ],                               # pc25
  70  [ qw(f m d t m c c bc) ],              # pc26
  71  [ qw(d n n n n m c c bc) ],    # pc27
  72  [ qw(c c c c d t p m bp n p bp bc) ], # pc28
  73  [ qw(c c n m) ],                               # pc29
  74  [ qw(c c n) ],                                 # pc30
  75  [ qw(c c n) ],                                 # pc31
  76  [ qw(c c n) ],                                 # pc32
  77  [ qw(c c n) ],                                 # pc33
  78  [ qw(c c m) ],                                 # pc34
  79  [ qw(c c m) ],                                 # pc35
  80  [ qw(c c m) ],                                 # pc36
  81  [ qw(c c n m) ],                               # pc37
  82  undef,                                                 # pc38 not interested
  83  [ qw(c m) ],                                   # pc39
  84  [ qw(c c m p n) ],                             # pc40
  85  [ qw(c n m h) ],                               # pc41
  86  [ qw(c c n) ],                                 # pc42
  87  undef,                                                 # pc43 don't handle it
  88  [ qw(c c n m m c) ],                   # pc44
  89  [ qw(c c n m) ],                               # pc45
  90  [ qw(c c n) ],                                 # pc46
  91  undef,                                                 # pc47
  92  undef,                                                 # pc48
  93  [ qw(c m h) ],                                 # pc49
  94  [ qw(c n h) ],                                 # pc50
  95  [ qw(c c n) ],                                 # pc51
  96  undef,
  97  undef,
  98  undef,
  99  undef,
 100  undef,
 101  undef,
 102  undef,
 103  undef,
 104  undef,                                                 # pc60
 105  undef,
 106  undef,
 107  undef,
 108  undef,
 109  undef,
 110  undef,
 111  undef,
 112  undef,
 113  undef,
 114  undef,                                                 # pc70
 115  undef,
 116  undef,
 117  [ qw(d n n n n n n m m m c c h) ],     # pc73
 118  undef,
 119  undef,
 120  undef,
 121  undef,
 122  undef,
 123  undef,
 124  undef,                                                 # pc80
 125  undef,
 126  undef,
 127  undef,
 128  [ qw(c c c m) ],                               # pc84
 129  [ qw(c c c m) ],                               # pc85
 130 );
 131
 132 # use the entry in the check list to check the field list presented
 133 # return OK if line NOT in check list (for now)
 134 sub check
 135 {
 136         my $n = shift;
 137         $n -= 10;
 138         return 0 if $n < 0 || $n > @checklist;
 139         my $ref = $checklist[$n];
 140         return 0 unless ref $ref;
 141
 142         my $i;
 143         shift;    # not interested in the first field
 144         for ($i = 0; $i < @$ref; $i++) {
 145                 my ($blank, $act) = $$ref[$i] =~ /^(b?)(\w)$/;
 146                 return 0 unless $act;
 147                 next if $blank && $_[$i] =~ /^[ \*]$/;
 148                 if ($act eq 'c') {
 149                         return $i+1 unless is_callsign($_[$i]);
 150                 } elsif ($act eq 'm') {
 151                         return $i+1 unless is_pctext($_[$i]);
 152                 } elsif ($act eq 'p') {
 153                         return $i+1 unless is_pcflag($_[$i]);
 154                 } elsif ($act eq 'f') {
 155                         return $i+1 unless is_freq($_[$i]);
 156                 } elsif ($act eq 'n') {
 157                         return $i+1 unless $_[$i] =~ /^[\d ]+$/;
 158                 } elsif ($act eq 'h') {
 159                         return $i+1 unless $_[$i] =~ /^H\d\d?$/;
 160                 } elsif ($act eq 'd') {
 161                         return $i+1 unless $_[$i] =~ /^\s*\d+-\w\w\w-[12][90]\d\d$/;
 162                 } elsif ($act eq 't') {
 163                         return $i+1 unless $_[$i] =~ /^[012]\d[012345]\dZ$/;
 164                 }
 165         }
 166         return 0;
 167 }
 168
 169 sub init
 170 {
 171         my $user = DXUser->get($main::mycall);
 172         $DXProt::myprot_version += $main::version*100;
 173         $me = DXProt->new($main::mycall, 0, $user);
 174         $me->{here} = 1;
 175         $me->{state} = "indifferent";
 176         do "$main::data/hop_table.pl" if -e "$main::data/hop_table.pl";
 177         confess $@ if $@;
 178         $me->{sort} = 'S';    # S for spider
 179
 180         # now prime the spot and wwv  duplicates file with data
 181 #    my @today = Julian::unixtoj(time);
 182 #       for (Spot::readfile(@today), Spot::readfile(Julian::sub(@today, 1))) {
 183 #               Spot::dup(@{$_}[0..3]);
 184 #       }
 185 #       for (Geomag::readfile(time)) {
 186 #               Geomag::dup(@{$_}[1..5]);
 187 #       }
 188
 189         # load the baddx file
 190         do "$baddxfn" if -e "$baddxfn";
 191         print "$@\n" if $@;
 192 }
 193
 194 #
 195 # obtain a new connection this is derived from dxchannel
 196 #
 197
 198 sub new
 199 {
 200         my $self = DXChannel::alloc(@_);
 201         return $self;
 202 }
 203
 204 # this is how a pc connection starts (for an incoming connection)
 205 # issue a PC38 followed by a PC18, then wait for a PC20 (remembering
 206 # all the crap that comes between).
 207 sub start
 208 {
 209         my ($self, $line, $sort) = @_;
 210         my $call = $self->{call};
 211         my $user = $self->{user};
 212
 213         # remember type of connection
 214         $self->{consort} = $line;
 215         $self->{outbound} = $sort eq 'O';
 216         $self->{priv} = $user->priv || 1;     # other clusters can always be 'normal' users
 217         $self->{lang} = $user->lang || 'en';
 218         $self->{isolate} = $user->{isolate};
 219         $self->{consort} = $line;       # save the connection type
 220         $self->{here} = 1;
 221
 222         # get the INPUT filters (these only pertain to Clusters)
 223         $self->{inspotfilter} = Filter::read_in('spots', $call, 1);
 224         $self->{inwwvfilter} = Filter::read_in('wwv', $call, 1);
 225         $self->{inwcyfilter} = Filter::read_in('wcy', $call, 1);
 226         $self->{inannfilter} = Filter::read_in('ann', $call, 1);
 227
 228         # set unbuffered and no echo
 229         $self->send_now('B',"0");
 230         $self->send_now('E',"0");
 231
 232         # ping neighbour node stuff
 233         my $ping = $user->pingint;
 234         $ping = 5*60 unless defined $ping;
 235         $self->{pingint} = $ping;
 236         $self->{nopings} = $user->nopings || 2;
 237         $self->{pingtime} = [ ];
 238         $self->{pingave} = 0;
 239
 240         # send initialisation string
 241         unless ($self->{outbound}) {
 242                 $self->send(pc38()) if DXNode->get_all();
 243                 $self->send(pc18());
 244                 $self->{lastping} = $main::systime;
 245         } else {
 246                 # remove from outstanding connects queue
 247                 @main::outstanding_connects = grep {$_->{call} ne $call} @main::outstanding_connects;
 248                 $self->{lastping} = $main::systime + $self->pingint / 2;
 249         }
 250         $self->state('init');
 251         $self->pc50_t(time);
 252
 253         # send info to all logged in thingies
 254         $self->tell_login('loginn');
 255
 256         Log('DXProt', "$call connected");
 257 }
 258
 259 #
 260 # This is the normal pcxx despatcher
 261 #
 262 sub normal
 263 {
 264         my ($self, $line) = @_;
 265         my @field = split /\^/, $line;
 266         pop @field if $field[-1] eq '~';
 267
 268 #       print join(',', @field), "\n";
 269
 270         # ignore any lines that don't start with PC
 271         return if !$field[0] =~ /^PC/;
 272
 273         # process PC frames
 274         my ($pcno) = $field[0] =~ /^PC(\d\d)/; # just get the number
 275         return unless $pcno;
 276         return if $pcno < 10 || $pcno > 99;
 277
 278         # check for and dump bad protocol messages
 279         my $n = check($pcno, @field);
 280         if ($n) {
 281                 dbg('chan', "bad field $n, dumped (" . parray($checklist[$pcno-10]) . ")");
 282                 return;
 283         }
 284
 285         # local processing 1
 286         my $pcr;
 287         eval {
 288                 $pcr = Local::pcprot($self, $pcno, @field);
 289         };
 290 #       dbg('local', "Local::pcprot error $@") if $@;
 291         return if $pcr;
 292
 293  SWITCH: {
 294                 if ($pcno == 10) {              # incoming talk
 295
 296                         # is it for me or one of mine?
 297                         my ($to, $via, $call, $dxchan);
 298                         if ($field[5] gt ' ') {
 299                                 $call = $via = $field[2];
 300                                 $to = $field[5];
 301                                 unless (is_callsign($to)) {
 302                                         dbg('chan', "Corrupt talk, rejected");
 303                                         return;
 304                                 }
 305                         } else {
 306                                 $call = $to = $field[2];
 307                         }
 308                         if ($dxchan = DXChannel->get($call)) {
 309                                 $dxchan->talk($field[1], $to, $via, $field[3]);
 310                         } else {
 311                                 $self->route($field[2], $line); # relay it on its way
 312                         }
 313                         return;
 314                 }
 315
 316                 if ($pcno == 11 || $pcno == 26) { # dx spot
 317
 318                         # route 'foreign' pc26s
 319                         if ($pcno == 26) {
 320                                 if ($field[7] ne $main::mycall) {
 321                                         $self->route($field[7], $line);
 322                                         return;
 323                                 }
 324                         }
 325
 326                         # if this is a 'nodx' node then ignore it
 327                         if (grep $field[7] =~ /^$_/,  @DXProt::nodx_node) {
 328                                 dbg('chan', "Bad DXNode, dropped");
 329                                 return;
 330                         }
 331
 332                         # convert the date to a unix date
 333                         my $d = cltounix($field[3], $field[4]);
 334                         # bang out (and don't pass on) if date is invalid or the spot is too old (or too young)
 335                         if (!$d || ($pcno == 11 && ($d < $main::systime - $pc11_max_age || $d > $main::systime + 900))) {
 336                                 dbg('chan', "Spot ignored, invalid date or out of range ($field[3] $field[4])\n");
 337                                 return;
 338                         }
 339
 340                         # is it 'baddx'
 341                         if (grep $field[2] eq $_, @baddx) {
 342                                 dbg('chan', "Bad DX spot, ignored");
 343                                 return;
 344                         }
 345
 346                         # do some de-duping
 347                         $field[5] =~ s/^\s+//;      # take any leading blanks off
 348                         if (Spot::dup($field[1], $field[2], $d, $field[5])) {
 349                                 dbg('chan', "Duplicate Spot ignored\n");
 350                                 return;
 351                         }
 352
 353                         my @spot = Spot::add($field[1], $field[2], $d, $field[5], $field[6], $field[7]);
 354
 355             #
 356                         # @spot at this point contains:-
 357             # freq, spotted call, time, text, spotter, spotted cc, spotters cc, orig node
 358                         # then  spotted itu, spotted cq, spotters itu, spotters cq
 359                         # you should be able to route on any of these
 360             #
 361
 362                         # fix up qra locators of known users
 363                         my $user = DXUser->get_current($spot[4]);
 364                         if ($user) {
 365                                 my $qra = $user->qra;
 366                                 unless ($qra && DXBearing::is_qra($qra)) {
 367                                         my $lat = $user->lat;
 368                                         my $long = $user->long;
 369                                         if (defined $lat && defined $long) {
 370                                                 $user->qra(DXBearing::lltoqra($lat, $long));
 371                                                 $user->put;
 372                                         }
 373                                 }
 374
 375                                 # send a remote command to a distant cluster if it is visible and there is no
 376                                 # qra locator and we havn't done it for a month.
 377
 378                                 unless ($user->qra) {
 379                                         my $node;
 380                                         my $to = $user->homenode;
 381                                         my $last = $user->lastoper || 0;
 382                                         if ($send_opernam && $main::systime > $last + $DXUser::lastoperinterval && $to && ($node = DXCluster->get_exact($to)) ) {
 383                                                 my $cmd = "forward/opernam $spot[4]";
 384                                                 # send the rcmd but we aren't interested in the replies...
 385                                                 if ($node && $node->dxchan && $node->dxchan->is_clx) {
 386                                                         route(undef, $to, pc84($main::mycall, $to, $main::mycall, $cmd));
 387                                                 } else {
 388                                                         route(undef, $to, pc34($main::mycall, $to, $cmd));
 389                                                 }
 390                                                 if ($to ne $field[7]) {
 391                                                         $to = $field[7];
 392                                                         $node = DXCluster->get_exact($to);
 393                                                         if ($node && $node->dxchan && $node->dxchan->is_clx) {
 394                                                                 route(undef, $to, pc84($main::mycall, $to, $main::mycall, $cmd));
 395                                                         } else {
 396                                                                 route(undef, $to, pc34($main::mycall, $to, $cmd));
 397                                                         }
 398                                                 }
 399                                                 $user->lastoper($main::systime);
 400                                                 $user->put;
 401                                         }
 402                                 }
 403                         }
 404
 405                         # local processing
 406                         my $r;
 407                         eval {
 408                                 $r = Local::spot($self, @spot);
 409                         };
 410 #                       dbg('local', "Local::spot1 error $@") if $@;
 411                         return if $r;
 412
 413                         # DON'T be silly and send on PC26s!
 414                         return if $pcno == 26;
 415
 416                         # send out the filtered spots
 417                         send_dx_spot($self, $line, @spot) if @spot;
 418                         return;
 419                 }
 420
 421                 if ($pcno == 12) {              # announces
 422                         # announce duplicate checking
 423                         $field[3] =~ s/^\s+//;  # remove leading blanks
 424                         if (AnnTalk::dup($field[1], $field[2], $field[3])) {
 425                                 dbg('chan', "Duplicate Announce ignored");
 426                                 return;
 427                         }
 428
 429                         if ($field[2] eq '*' || $field[2] eq $main::mycall) {
 430
 431                                 # global ann filtering on INPUT
 432                                 if ($self->{inannfilter}) {
 433                                         my ($filter, $hops) = Filter::it($self->{inannfilter}, @field[1..6], $self->{call} );
 434                                         unless ($filter) {
 435                                                 dbg('chan', "Rejected by filter");
 436                                                 return;
 437                                         }
 438                                 }
 439
 440                                 # send it
 441                                 $self->send_announce($line, @field[1..6]);
 442                         } else {
 443                                 $self->route($field[2], $line);
 444                         }
 445
 446                         return;
 447                 }
 448
 449                 if ($pcno == 13) {
 450                         last SWITCH;
 451                 }
 452                 if ($pcno == 14) {
 453                         last SWITCH;
 454                 }
 455                 if ($pcno == 15) {
 456                         last SWITCH;
 457                 }
 458
 459                 if ($pcno == 16) {              # add a user
 460                         my $node = DXCluster->get_exact($field[1]);
 461                         my $dxchan;
 462                         if (!$node && ($dxchan = DXChannel->get($field[1]))) {
 463                                 # add it to the node table if it isn't present and it's
 464                                 # connected locally
 465                                 $node = DXNode->new($dxchan, $field[1], 0, 1, 5400);
 466                                 broadcast_ak1a(pc19($dxchan, $node), $dxchan, $self) unless $dxchan->{isolate};
 467
 468                         }
 469                         return unless $node; # ignore if havn't seen a PC19 for this one yet
 470                         return unless $node->isa('DXNode');
 471                         if ($node->dxchan != $self) {
 472                                 dbg('chan', "LOOP: $field[1] came in on wrong channel");
 473                                 return;
 474                         }
 475                         if (($dxchan = DXChannel->get($field[1])) && $dxchan != $self) {
 476                                 dbg('chan', "LOOP: $field[1] connected locally");
 477                                 return;
 478                         }
 479                         my $i;
 480
 481                         for ($i = 2; $i < $#field; $i++) {
 482                                 my ($call, $confmode, $here) = $field[$i] =~ /^(\S+) (\S) (\d)/o;
 483                                 next if !$call || length $call < 3 || length $call > 8;
 484                                 next if !$confmode;
 485                                 $call = uc $call;
 486                                 next if DXCluster->get_exact($call); # we already have this (loop?)
 487
 488                                 $confmode = $confmode eq '*';
 489                                 DXNodeuser->new($self, $node, $call, $confmode, $here);
 490
 491                                 # add this station to the user database, if required
 492                                 $call =~ s/-\d+$//o;        # remove ssid for users
 493                                 my $user = DXUser->get_current($call);
 494                                 $user = DXUser->new($call) if !$user;
 495                                 $user->homenode($node->call) if !$user->homenode;
 496                                 $user->node($node->call);
 497                                 $user->lastin($main::systime) unless DXChannel->get($call);
 498                                 $user->put;
 499                         }
 500
 501                         # queue up any messages (look for privates only)
 502                         DXMsg::queue_msg(1) if $self->state eq 'normal';
 503                         last SWITCH;
 504                 }
 505
 506                 if ($pcno == 17) {              # remove a user
 507                         my $node = DXCluster->get_exact($field[2]);
 508                         my $dxchan;
 509                         if (!$node && ($dxchan = DXChannel->get($field[2]))) {
 510                                 # add it to the node table if it isn't present and it's
 511                                 # connected locally
 512                                 $node = DXNode->new($dxchan, $field[2], 0, 1, 5400);
 513                                 broadcast_ak1a(pc19($dxchan, $node), $dxchan, $self) unless $dxchan->{isolate};
 514                                 return;
 515                         }
 516                         return unless $node;
 517                         return unless $node->isa('DXNode');
 518                         if ($node->dxchan != $self) {
 519                                 dbg('chan', "LOOP: $field[2] came in on wrong channel");
 520                                 return;
 521                         }
 522                         if (($dxchan = DXChannel->get($field[2])) && $dxchan != $self) {
 523                                 dbg('chan', "LOOP: $field[2] connected locally");
 524                                 return;
 525                         }
 526                         my $ref = DXCluster->get_exact($field[1]);
 527                         $ref->del() if $ref;
 528                         last SWITCH;
 529                 }
 530
 531                 if ($pcno == 18) {              # link request
 532                         $self->state('init');
 533
 534                         # first clear out any nodes on this dxchannel
 535                         my @gonenodes = map { $_->dxchan == $self ? $_ : () } DXNode::get_all();
 536                         foreach my $node (@gonenodes) {
 537                                 next if $node->dxchan == $DXProt::me;
 538                                 broadcast_ak1a(pc21($node->call, 'Gone, re-init') , $self) unless $self->{isolate};
 539                                 $node->del();
 540                         }
 541                         $self->send_local_config();
 542                         $self->send(pc20());
 543                         return;             # we don't pass these on
 544                 }
 545
 546                 if ($pcno == 19) {              # incoming cluster list
 547                         my $i;
 548                         my $newline = "PC19^";
 549                         for ($i = 1; $i < $#field-1; $i += 4) {
 550                                 my $here = $field[$i];
 551                                 my $call = uc $field[$i+1];
 552                                 my $confmode = $field[$i+2];
 553                                 my $ver = $field[$i+3];
 554
 555                                 $ver = 5400 if !$ver && $allowzero;
 556
 557                                 # now check the call over
 558                                 my $node = DXCluster->get_exact($call);
 559                                 if ($node) {
 560                                         my $dxchan;
 561                                         if (($dxchan = DXChannel->get($call)) && $dxchan != $self) {
 562                                                 dbg('chan', "LOOP: $call connected locally");
 563                                         }
 564                                     if ($node->dxchan != $self) {
 565                                                 dbg('chan', "LOOP: $call come in on wrong channel");
 566                                                 next;
 567                                         }
 568                                         dbg('chan', "already have $call");
 569                                         next;
 570                                 }
 571
 572                                 # check for sane parameters
 573                                 next if $ver < 5000; # only works with version 5 software
 574                                 next if length $call < 3; # min 3 letter callsigns
 575
 576                                 # add it to the nodes table and outgoing line
 577                                 $newline .= "$here^$call^$confmode^$ver^";
 578                                 DXNode->new($self, $call, $confmode, $here, $ver);
 579
 580                                 # unbusy and stop and outgoing mail (ie if somehow we receive another PC19 without a disconnect)
 581                                 my $mref = DXMsg::get_busy($call);
 582                                 $mref->stop_msg($call) if $mref;
 583
 584                                 # add this station to the user database, if required (don't remove SSID from nodes)
 585                                 my $user = DXUser->get_current($call);
 586                                 if (!$user) {
 587                                         $user = DXUser->new($call);
 588                                         $user->sort('A');
 589                                         $user->priv(1);                   # I have relented and defaulted nodes
 590                                         $self->{priv} = 1;                # to user RCMDs allowed
 591                                         $user->homenode($call);
 592                                         $user->node($call);
 593                                 }
 594                                 $user->lastin($main::systime) unless DXChannel->get($call);
 595                                 $user->put;
 596                         }
 597
 598                         return if $newline eq "PC19^";
 599
 600                         # add hop count
 601                         $newline .=  get_hops(19) . "^";
 602                         $line = $newline;
 603                         last SWITCH;
 604                 }
 605
 606                 if ($pcno == 20) {              # send local configuration
 607                         $self->send_local_config();
 608                         $self->send(pc22());
 609                         $self->state('normal');
 610                         return;
 611                 }
 612
 613                 if ($pcno == 21) {              # delete a cluster from the list
 614                         my $call = uc $field[1];
 615                         if ($call ne $main::mycall) { # don't allow malicious buggers to disconnect me!
 616                                 my $node = DXCluster->get_exact($call);
 617                                 if ($node) {
 618                                         if ($node->dxchan != $self) {
 619                                                 dbg('chan', "LOOP: $call come in on wrong channel");
 620                                                 return;
 621                                         }
 622                                         my $dxchan;
 623                                         if (($dxchan = DXChannel->get($call)) && $dxchan != $self) {
 624                                                 dbg('chan', "LOOP: $call connected locally");
 625                                                 return;
 626                                         }
 627                                         $node->del();
 628                                 } else {
 629                                         dbg('chan', "$call not in table, dropped");
 630                                         return;
 631                                 }
 632                         }
 633                         last SWITCH;
 634                 }
 635
 636                 if ($pcno == 22) {
 637                         $self->state('normal');
 638                         return;
 639                 }
 640
 641                 if ($pcno == 23 || $pcno == 27) { # WWV info
 642
 643                         # route 'foreign' pc27s
 644                         if ($pcno == 27) {
 645                                 if ($field[8] ne $main::mycall) {
 646                                         $self->route($field[8], $line);
 647                                         return;
 648                                 }
 649                         }
 650
 651                         # do some de-duping
 652                         my $d = cltounix($field[1], sprintf("%02d18Z", $field[2]));
 653                         my $sfi = unpad($field[3]);
 654                         my $k = unpad($field[4]);
 655                         my $i = unpad($field[5]);
 656                         my ($r) = $field[6] =~ /R=(\d+)/;
 657                         $r = 0 unless $r;
 658                         if (($pcno == 23 && $d < $main::systime - $pc23_max_age) || $d > $main::systime + 1500 || $field[2] < 0 || $field[2] > 23) {
 659                                 dbg('chan', "WWV Date ($field[1] $field[2]) out of range");
 660                                 return;
 661                         }
 662                         if (Geomag::dup($d,$sfi,$k,$i,$field[6])) {
 663                                 dbg('chan', "Dup WWV Spot ignored\n");
 664                                 return;
 665                         }
 666                         $field[7] =~ s/-\d+$//o;            # remove spotter's ssid
 667
 668                         my $wwv = Geomag::update($d, $field[2], $sfi, $k, $i, @field[6..8], $r);
 669
 670                         my $rep;
 671                         eval {
 672                                 $rep = Local::wwv($self, $field[1], $field[2], $sfi, $k, $i, @field[6..8], $r);
 673                         };
 674 #                       dbg('local', "Local::wwv2 error $@") if $@;
 675                         return if $rep;
 676
 677                         # DON'T be silly and send on PC27s!
 678                         return if $pcno == 27;
 679
 680                         # broadcast to the eager world
 681                         send_wwv_spot($self, $line, $d, $field[2], $sfi, $k, $i, @field[6..8]);
 682                         return;
 683                 }
 684
 685                 if ($pcno == 24) {              # set here status
 686                         my $call = uc $field[1];
 687                         my $ref = DXCluster->get_exact($call);
 688                         $ref->here($field[2]) if $ref;
 689                         last SWITCH;
 690                 }
 691
 692                 if ($pcno == 25) {      # merge request
 693                         if ($field[1] ne $main::mycall) {
 694                                 $self->route($field[1], $line);
 695                                 return;
 696                         }
 697                         if ($field[2] eq $main::mycall) {
 698                                 dbg('chan', "Trying to merge to myself, ignored");
 699                                 return;
 700                         }
 701
 702                         Log('DXProt', "Merge request for $field[3] spots and $field[4] WWV from $field[1]");
 703
 704                         # spots
 705                         if ($field[3] > 0) {
 706                                 my @in = reverse Spot::search(1, undef, undef, 0, $field[3]);
 707                                 my $in;
 708                                 foreach $in (@in) {
 709                                         $self->send(pc26(@{$in}[0..4], $field[2]));
 710                                 }
 711                         }
 712
 713                         # wwv
 714                         if ($field[4] > 0) {
 715                                 my @in = reverse Geomag::search(0, $field[4], time, 1);
 716                                 my $in;
 717                                 foreach $in (@in) {
 718                                         $self->send(pc27(@{$in}[0..5], $field[2]));
 719                                 }
 720                         }
 721                         return;
 722                 }
 723
 724                 if (($pcno >= 28 && $pcno <= 33) || $pcno == 40 || $pcno == 42 || $pcno == 49) { # mail/file handling
 725                         if ($pcno == 49 || $field[1] eq $main::mycall) {
 726                                 DXMsg::process($self, $line);
 727                         } else {
 728                                 $self->route($field[1], $line) unless $self->is_clx;
 729                         }
 730                         return;
 731                 }
 732
 733                 if ($pcno == 34 || $pcno == 36) { # remote commands (incoming)
 734                         if ($field[1] eq $main::mycall) {
 735                                 my $ref = DXUser->get_current($field[2]);
 736                                 my $cref = DXCluster->get($field[2]);
 737                                 Log('rcmd', 'in', $ref->{priv}, $field[2], $field[3]);
 738                                 unless (!$cref || !$ref || $cref->mynode->call ne $ref->homenode) {    # not allowed to relay RCMDS!
 739                                         if ($ref->{priv}) {     # you have to have SOME privilege, the commands have further filtering
 740                                                 $self->{remotecmd} = 1; # for the benefit of any command that needs to know
 741                                                 my $oldpriv = $self->{priv};
 742                                                 $self->{priv} = $ref->{priv};     # assume the user's privilege level
 743                                                 my @in = (DXCommandmode::run_cmd($self, $field[3]));
 744                                                 $self->{priv} = $oldpriv;
 745                                                 for (@in) {
 746                                                         s/\s*$//og;
 747                                                         $self->send(pc35($main::mycall, $field[2], "$main::mycall:$_"));
 748                                                         Log('rcmd', 'out', $field[2], $_);
 749                                                 }
 750                                                 delete $self->{remotecmd};
 751                                         } else {
 752                                                 $self->send(pc35($main::mycall, $field[2], "$main::mycall:sorry...!"));
 753                                         }
 754                                 } else {
 755                                         $self->send(pc35($main::mycall, $field[2], "$main::mycall:your attempt is logged, Tut tut tut...!"));
 756                                 }
 757                         } else {
 758                                 my $ref = DXUser->get_current($field[1]);
 759                                 if ($ref && $ref->is_clx) {
 760                                         route($field[1], pc84($field[2], $field[1], $field[2], $field[3]));
 761                                 } else {
 762                                         $self->route($field[1], $line);
 763                                 }
 764                         }
 765                         return;
 766                 }
 767
 768                 if ($pcno == 35) {              # remote command replies
 769                         if ($field[1] eq $main::mycall) {
 770                                 my $s = $rcmds{$field[2]};
 771                                 if ($s) {
 772                                         my $dxchan = DXChannel->get($s->{call});
 773                                         $dxchan->send($field[3]) if $dxchan;
 774                                         delete $rcmds{$field[2]} if !$dxchan;
 775                                 } else {
 776                                         # send unsolicited ones to the sysop
 777                                         my $dxchan = DXChannel->get($main::myalias);
 778                                         $dxchan->send($field[3]) if $dxchan;
 779                                 }
 780                         } else {
 781                                 my $ref = DXUser->get_current($field[1]);
 782                                 if ($ref && $ref->is_clx) {
 783                                         route($field[1], pc85($field[2], $field[1], $field[2], $field[3]));
 784                                 } else {
 785                                         $self->route($field[1], $line);
 786                                 }
 787                         }
 788                         return;
 789                 }
 790
 791                 # for pc 37 see 44 onwards
 792
 793                 if ($pcno == 38) {              # node connected list from neighbour
 794                         return;
 795                 }
 796
 797                 if ($pcno == 39) {              # incoming disconnect
 798                         $self->disconnect(1);
 799                         return;
 800                 }
 801
 802                 if ($pcno == 41) {              # user info
 803                         # add this station to the user database, if required
 804                         my $user = DXUser->get_current($field[1]);
 805                         if (!$user) {
 806                                 # then try without an SSID
 807                                 $field[1] =~ s/-\d+$//o;
 808                                 $user = DXUser->get_current($field[1]);
 809                         }
 810                         $user = DXUser->new($field[1]) if !$user;
 811
 812                         if ($field[2] == 1) {
 813                                 $user->name($field[3]);
 814                         } elsif ($field[2] == 2) {
 815                                 $user->qth($field[3]);
 816                         } elsif ($field[2] == 3) {
 817                                 my ($lat, $long) = DXBearing::stoll($field[3]);
 818                                 $user->lat($lat);
 819                                 $user->long($long);
 820                                 $user->qra(DXBearing::lltoqra($lat, $long)) unless $user->qra && DXBearing::is_qra($user->qra);
 821                         } elsif ($field[2] == 4) {
 822                                 $user->homenode($field[3]);
 823                         }
 824                         $user->lastoper($main::systime);   # to cut down on excessive for/opers being generated
 825                         $user->put;
 826                         last SWITCH;
 827                 }
 828                 if ($pcno == 43) {
 829                         last SWITCH;
 830                 }
 831                 if ($pcno == 37 || $pcno == 44 || $pcno == 45 || $pcno == 46 || $pcno == 47 || $pcno == 48) {
 832                         DXDb::process($self, $line);
 833                         return;
 834                 }
 835
 836                 if ($pcno == 50) {              # keep alive/user list
 837                         my $node = DXCluster->get_exact($field[1]);
 838                         if ($node) {
 839                                 return unless $node->isa('DXNode');
 840                                 return unless $node->dxchan == $self;
 841                                 $node->update_users($field[2]);
 842                         }
 843                         last SWITCH;
 844                 }
 845
 846                 if ($pcno == 51) {              # incoming ping requests/answers
 847
 848                         # is it for us?
 849                         if ($field[1] eq $main::mycall) {
 850                                 my $flag = $field[3];
 851                                 if ($flag == 1) {
 852                                         $self->send(pc51($field[2], $field[1], '0'));
 853                                 } else {
 854                                         # it's a reply, look in the ping list for this one
 855                                         my $ref = $pings{$field[2]};
 856                                         if ($ref) {
 857                                                 my $tochan =  DXChannel->get($field[2]);
 858                                                 while (@$ref) {
 859                                                         my $r = shift @$ref;
 860                                                         my $dxchan = DXChannel->get($r->{call});
 861                                                         next unless $dxchan;
 862                                                         my $t = tv_interval($r->{t}, [ gettimeofday ]);
 863                                                         if ($dxchan->is_user) {
 864                                                                 my $s = sprintf "%.2f", $t;
 865                                                                 my $ave = sprintf "%.2f", $tochan ? ($tochan->{pingave} || $t) : $t;
 866                                                                 $dxchan->send($dxchan->msg('pingi', $field[2], $s, $ave))
 867                                                         } elsif ($dxchan->is_node) {
 868                                                                 if ($tochan) {
 869                                                                         $tochan->{nopings} = 2; # pump up the timer
 870                                                                         push @{$tochan->{pingtime}}, $t;
 871                                                                         shift @{$tochan->{pingtime}} if @{$tochan->{pingtime}} > 6;
 872                                                                         my $st;
 873                                                                         for (@{$tochan->{pingtime}}) {
 874                                                                                 $st += $_;
 875                                                                         }
 876                                                                         $tochan->{pingave} = $st / @{$tochan->{pingtime}};
 877                                                                 }
 878                                                         }
 879                                                 }
 880                                         }
 881                                 }
 882                         } else {
 883                                 # route down an appropriate thingy
 884                                 $self->route($field[1], $line);
 885                         }
 886                         return;
 887                 }
 888
 889                 if ($pcno == 75) {              # dunno but route it
 890                         if ($field[1] ne $main::mycall) {
 891                                 $self->route($field[1], $line);
 892                         }
 893                         return;
 894                 }
 895
 896                 if ($pcno == 73) {  # WCY broadcasts
 897
 898                         # do some de-duping
 899                         my $d = cltounix($field[1], sprintf("%02d18Z", $field[2]));
 900                         if (($pcno == 23 && $d < $main::systime - $pc23_max_age) || $d > $main::systime + 1500 || $field[2] < 0 || $field[2] > 23) {
 901                                 dbg('chan', "WCY Date ($field[1] $field[2]) out of range");
 902                                 return;
 903                         }
 904                         @field = map { unpad($_) } @field;
 905                         if (WCY::dup($d,@field[3..7])) {
 906                                 dbg('chan', "Dup WCY Spot ignored\n");
 907                                 return;
 908                         }
 909
 910                         my $wcy = WCY::update($d, @field[2..12]);
 911
 912                         my $rep;
 913                         eval {
 914                                 $rep = Local::wwv($self, @field[1..12]);
 915                         };
 916                         # dbg('local', "Local::wcy error $@") if $@;
 917                         return if $rep;
 918
 919                         # broadcast to the eager world
 920                         send_wcy_spot($self, $line, $d, @field[2..12]);
 921                         return;
 922                 }
 923
 924                 if ($pcno == 84) { # remote commands (incoming)
 925                         if ($field[1] eq $main::mycall) {
 926                                 my $ref = DXUser->get_current($field[2]);
 927                                 my $cref = DXCluster->get($field[2]);
 928                                 Log('rcmd', 'in', $ref->{priv}, $field[2], $field[4]);
 929                                 unless ($field[4] =~ /rcmd/i || !$cref || !$ref || $cref->mynode->call ne $ref->homenode) {    # not allowed to relay RCMDS!
 930                                         if ($ref->{priv}) {     # you have to have SOME privilege, the commands have further filtering
 931                                                 $self->{remotecmd} = 1; # for the benefit of any command that needs to know
 932                                                 my $oldpriv = $self->{priv};
 933                                                 $self->{priv} = $ref->{priv};     # assume the user's privilege level
 934                                                 my @in = (DXCommandmode::run_cmd($self, $field[4]));
 935                                                 $self->{priv} = $oldpriv;
 936                                                 for (@in) {
 937                                                         s/\s*$//og;
 938                                                         $self->send(pc85($main::mycall, $field[2], $field[3], "$main::mycall:$_"));
 939                                                         Log('rcmd', 'out', $field[2], $_);
 940                                                 }
 941                                                 delete $self->{remotecmd};
 942                                         } else {
 943                                                 $self->send(pc85($main::mycall, $field[2], $field[3], "$main::mycall:sorry...!"));
 944                                         }
 945                                 } else {
 946                                         $self->send(pc85($main::mycall, $field[2], $field[3],"$main::mycall:your attempt is logged, Tut tut tut...!"));
 947                                 }
 948                         } else {
 949                                 my $ref = DXUser->get_current($field[1]);
 950                                 if ($ref && $ref->is_clx) {
 951                                         $self->route($field[1], $line);
 952                                 } else {
 953                                         route($field[1], pc34($field[2], $field[1], $field[4]));
 954                                 }
 955                         }
 956                         return;
 957                 }
 958
 959                 if ($pcno == 85) {              # remote command replies
 960                         if ($field[1] eq $main::mycall) {
 961                                 my $dxchan = DXChannel->get($field[3]);
 962                                 if ($dxchan) {
 963                                         $dxchan->send($field[4]);
 964                                 } else {
 965                                         my $s = $rcmds{$field[2]};
 966                                         if ($s) {
 967                                                 $dxchan = DXChannel->get($s->{call});
 968                                                 $dxchan->send($field[4]) if $dxchan;
 969                                                 delete $rcmds{$field[2]} if !$dxchan;
 970                                         } else {
 971                                                 # send unsolicited ones to the sysop
 972                                                 my $dxchan = DXChannel->get($main::myalias);
 973                                                 $dxchan->send($field[4]) if $dxchan;
 974                                         }
 975                                 }
 976                         } else {
 977                                 my $ref = DXUser->get_current($field[1]);
 978                                 if ($ref && $ref->is_clx) {
 979                                         $self->route($field[1], $line);
 980                                 } else {
 981                                         route($field[1], pc35($field[2], $field[1], $field[4]));
 982                                 }
 983                         }
 984                         return;
 985                 }
 986         }
 987
 988         # if get here then rebroadcast the thing with its Hop count decremented (if
 989         # there is one). If it has a hop count and it decrements to zero then don't
 990         # rebroadcast it.
 991         #
 992         # NOTE - don't arrive here UNLESS YOU WANT this lump of protocol to be
 993         #        REBROADCAST!!!!
 994         #
 995
 996         unless ($self->{isolate}) {
 997                 broadcast_ak1a($line, $self); # send it to everyone but me
 998         }
 999 }
1000
1001 #
1002 # This is called from inside the main cluster processing loop and is used
1003 # for despatching commands that are doing some long processing job
1004 #
1005 sub process
1006 {
1007         my $t = time;
1008         my @dxchan = DXChannel->get_all();
1009         my $dxchan;
1010
1011         foreach $dxchan (@dxchan) {
1012                 next unless $dxchan->is_node();
1013                 next if $dxchan == $me;
1014
1015                 # send a pc50 out on this channel
1016                 if ($t >= $dxchan->pc50_t + $DXProt::pc50_interval) {
1017                         $dxchan->send(pc50(scalar DXChannel::get_all_users));
1018                         $dxchan->pc50_t($t);
1019                 }
1020
1021                 # send a ping out on this channel
1022                 if ($dxchan->{pingint} && $t >= $dxchan->{pingint} + $dxchan->{lastping}) {
1023                         if ($dxchan->{nopings} <= 0) {
1024                                 $dxchan->disconnect;
1025                         } else {
1026                                 addping($main::mycall, $dxchan->call);
1027                                 $dxchan->{nopings} -= 1;
1028                                 $dxchan->{lastping} = $t;
1029                         }
1030                 }
1031         }
1032
1033         my $key;
1034         my $val;
1035         my $cutoff;
1036         if ($main::systime - 3600 > $last_hour) {
1037 #               Spot::process;
1038 #               Geomag::process;
1039 #               AnnTalk::process;
1040                 $last_hour = $main::systime;
1041         }
1042 }
1043
1044 #
1045 # finish up a pc context
1046 #
1047 sub finish
1048 {
1049         my $self = shift;
1050         my $call = $self->call;
1051         my $conn = shift;
1052         my $ref = DXCluster->get_exact($call);
1053
1054         # unbusy and stop and outgoing mail
1055         my $mref = DXMsg::get_busy($call);
1056         $mref->stop_msg($call) if $mref;
1057
1058         # broadcast to all other nodes that all the nodes connected to via me are gone
1059         my @gonenodes = map { $_->dxchan == $self ? $_ : () } DXNode::get_all();
1060         my $node;
1061
1062         foreach $node (@gonenodes) {
1063                 next if $node->call eq $call;
1064                 broadcast_ak1a(pc21($node->call, 'Gone') , $self) unless $self->{isolate};
1065                 $node->del();
1066         }
1067
1068         # remove outstanding pings
1069         delete $pings{$call};
1070
1071         # now broadcast to all other ak1a nodes that I have gone
1072         broadcast_ak1a(pc21($call, 'Gone.'), $self) unless $self->{isolate};
1073
1074         # I was the last node visited
1075     $self->user->node($main::mycall);
1076
1077         # send info to all logged in thingies
1078         $self->tell_login('logoutn');
1079
1080         Log('DXProt', $call . " Disconnected");
1081         $ref->del() if $ref;
1082 }
1083
1084 #
1085 # some active measures
1086 #
1087 sub send_dx_spot
1088 {
1089         my $self = shift;
1090         my $line = shift;
1091         my @dxchan = DXChannel->get_all();
1092         my $dxchan;
1093
1094         # send it if it isn't the except list and isn't isolated and still has a hop count
1095         # taking into account filtering and so on
1096         foreach $dxchan (@dxchan) {
1097                 my $routeit;
1098                 my ($filter, $hops);
1099
1100                 if ($dxchan->{spotfilter}) {
1101                     ($filter, $hops) = Filter::it($dxchan->{spotfilter}, @_, $self->{call} );
1102                         next unless $filter;
1103                 }
1104
1105                 if ($dxchan->is_node) {
1106                         next if $dxchan == $self;
1107                         if ($hops) {
1108                                 $routeit = $line;
1109                                 $routeit =~ s/\^H\d+\^\~$/\^H$hops\^\~/;
1110                         } else {
1111                                 $routeit = adjust_hops($dxchan, $line);  # adjust its hop count by node name
1112                                 next unless $routeit;
1113                         }
1114                         if ($filter) {
1115                                 $dxchan->send($routeit) if $routeit;
1116                         } else {
1117                                 $dxchan->send($routeit) unless $dxchan->{isolate} || $self->{isolate};
1118                         }
1119                 } elsif ($dxchan->is_user && $dxchan->{dx}) {
1120                         my $buf = Spot::formatb($dxchan->{user}->wantgrid, $_[0], $_[1], $_[2], $_[3], $_[4]);
1121                         $buf .= "\a\a" if $dxchan->{beep};
1122                         if ($dxchan->{state} eq 'prompt' || $dxchan->{state} eq 'talk') {
1123                                 $dxchan->send($buf);
1124                         } else {
1125                                 $dxchan->delay($buf);
1126                         }
1127                 }
1128         }
1129 }
1130
1131 sub send_wwv_spot
1132 {
1133         my $self = shift;
1134         my $line = shift;
1135         my @dxchan = DXChannel->get_all();
1136         my $dxchan;
1137
1138         # send it if it isn't the except list and isn't isolated and still has a hop count
1139         # taking into account filtering and so on
1140         foreach $dxchan (@dxchan) {
1141                 my $routeit;
1142                 my ($filter, $hops);
1143
1144                 if ($dxchan->{wwvfilter}) {
1145                          ($filter, $hops) = Filter::it($dxchan->{wwvfilter}, @_, $self->{call} );
1146                          next unless $filter;
1147                 }
1148                 if ($dxchan->is_node) {
1149                         next if $dxchan == $self;
1150                         if ($hops) {
1151                                 $routeit = $line;
1152                                 $routeit =~ s/\^H\d+\^\~$/\^H$hops\^\~/;
1153                         } else {
1154                                 $routeit = adjust_hops($dxchan, $line);  # adjust its hop count by node name
1155                                 next unless $routeit;
1156                         }
1157                         if ($filter) {
1158                                 $dxchan->send($routeit) if $routeit;
1159                         } else {
1160                                 $dxchan->send($routeit) unless $dxchan->{isolate} || $self->{isolate};
1161
1162                         }
1163                 } elsif ($dxchan->is_user && $dxchan->{wwv}) {
1164                         my $buf = "WWV de $_[6] <$_[1]>:   SFI=$_[2], A=$_[3], K=$_[4], $_[5]";
1165                         $buf .= "\a\a" if $dxchan->{beep};
1166                         if ($dxchan->{state} eq 'prompt' || $dxchan->{state} eq 'talk') {
1167                                 $dxchan->send($buf);
1168                         } else {
1169                                 $dxchan->delay($buf);
1170                         }
1171                 }
1172         }
1173 }
1174
1175 sub send_wcy_spot
1176 {
1177         my $self = shift;
1178         my $line = shift;
1179         my @dxchan = DXChannel->get_all();
1180         my $dxchan;
1181
1182         # send it if it isn't the except list and isn't isolated and still has a hop count
1183         # taking into account filtering and so on
1184         foreach $dxchan (@dxchan) {
1185                 my $routeit;
1186                 my ($filter, $hops);
1187
1188                 if ($dxchan->{wcyfilter}) {
1189                          ($filter, $hops) = Filter::it($dxchan->{wcyfilter}, @_, $self->{call} );
1190                          next unless $filter;
1191                 }
1192                 if ($dxchan->is_clx || $dxchan->is_spider) {
1193                         next if $dxchan == $self;
1194                         if ($hops) {
1195                                 $routeit = $line;
1196                                 $routeit =~ s/\^H\d+\^\~$/\^H$hops\^\~/;
1197                         } else {
1198                                 $routeit = adjust_hops($dxchan, $line);  # adjust its hop count by node name
1199                                 next unless $routeit;
1200                         }
1201                         if ($filter) {
1202                                 $dxchan->send($routeit) if $routeit;
1203                         } else {
1204                                 $dxchan->send($routeit) unless $dxchan->{isolate} || $self->{isolate};
1205                         }
1206                 } elsif ($dxchan->is_user && $dxchan->{wcy}) {
1207                         my $buf = "WCY de $_[10] <$_[1]> : K=$_[4] expK=$_[5] A=$_[3] R=$_[6] SFI=$_[2] SA=$_[7] GMF=$_[8] Au=$_[9]";
1208                         $buf .= "\a\a" if $dxchan->{beep};
1209                         if ($dxchan->{state} eq 'prompt' || $dxchan->{state} eq 'talk') {
1210                                 $dxchan->send($buf);
1211                         } else {
1212                                 $dxchan->delay($buf);
1213                         }
1214                 }
1215         }
1216 }
1217
1218 # send an announce
1219 sub send_announce
1220 {
1221         my $self = shift;
1222         my $line = shift;
1223         my @dxchan = DXChannel->get_all();
1224         my $dxchan;
1225         my $text = unpad($_[2]);
1226         my $target;
1227         my $to = 'To ';
1228
1229         if ($_[3] eq '*') {     # sysops
1230                 $target = "SYSOP";
1231         } elsif ($_[3] gt ' ') { # speciality list handling
1232                 my ($name) = split /\./, $_[3];
1233                 $target = "$name"; # put the rest in later (if bothered)
1234         }
1235
1236         if ($_[5] eq '1') {
1237                 $target = "WX";
1238                 $to = '';
1239         }
1240         $target = "All" if !$target;
1241
1242         Log('ann', $target, $_[0], $text);
1243
1244         # send it if it isn't the except list and isn't isolated and still has a hop count
1245         # taking into account filtering and so on
1246         foreach $dxchan (@dxchan) {
1247                 my $routeit;
1248                 my ($filter, $hops);
1249
1250                 if ($dxchan->{annfilter}) {
1251                         ($filter, $hops) = Filter::it($dxchan->{annfilter}, @_, $self->{call} );
1252                         next unless $filter;
1253                 }
1254                 if ($dxchan->is_node && $_[1] ne $main::mycall) {  # i.e not specifically routed to me
1255                         next if $dxchan == $self;
1256                         if ($hops) {
1257                                 $routeit = $line;
1258                                 $routeit =~ s/\^H\d+\^\~$/\^H$hops\^\~/;
1259                         } else {
1260                                 $routeit = adjust_hops($dxchan, $line);  # adjust its hop count by node name
1261                                 next unless $routeit;
1262                         }
1263                         if ($filter) {
1264                                 $dxchan->send($routeit) if $routeit;
1265                         } else {
1266                                 $dxchan->send($routeit) unless $dxchan->{isolate} || $self->{isolate};
1267
1268                         }
1269                 } elsif ($dxchan->is_user) {
1270                         unless ($dxchan->{ann}) {
1271                                 next if $_[0] ne $main::myalias && $_[0] ne $main::mycall;
1272                         }
1273                         next if $target eq 'SYSOP' && $dxchan->{priv} < 5;
1274                         my $buf = "$to$target de $_[0]: $text";
1275                         $buf .= "\a\a" if $dxchan->{beep};
1276                         if ($dxchan->{state} eq 'prompt' || $dxchan->{state} eq 'talk') {
1277                                 $dxchan->send($buf);
1278                         } else {
1279                                 $dxchan->delay($buf);
1280                         }
1281                 }
1282         }
1283 }
1284
1285 sub send_local_config
1286 {
1287         my $self = shift;
1288         my $n;
1289         my @nodes;
1290         my @localnodes;
1291         my @remotenodes;
1292
1293         # send our nodes
1294         if ($self->{isolate}) {
1295                 @localnodes = (DXCluster->get_exact($main::mycall));
1296         } else {
1297                 # create a list of all the nodes that are not connected to this connection
1298                 # and are not themselves isolated, this to make sure that isolated nodes
1299         # don't appear outside of this node
1300                 @nodes = DXNode::get_all();
1301                 @nodes = grep { $_->{call} ne $main::mycall } @nodes;
1302                 @nodes = grep { $_->dxchan != $self } @nodes if @nodes;
1303                 @nodes = grep { !$_->dxchan->{isolate} } @nodes if @nodes;
1304                 @localnodes = grep { $_->dxchan->{call} eq $_->{call} } @nodes if @nodes;
1305                 unshift @localnodes, DXCluster->get_exact($main::mycall);
1306                 @remotenodes = grep { $_->dxchan->{call} ne $_->{call} } @nodes if @nodes;
1307         }
1308
1309         my @s = $me->pc19(@localnodes, @remotenodes);
1310         for (@s) {
1311                 my $routeit = adjust_hops($self, $_);
1312                 $self->send($routeit) if $routeit;
1313         }
1314
1315         # get all the users connected on the above nodes and send them out
1316         foreach $n (@localnodes, @remotenodes) {
1317                 my @users = values %{$n->list};
1318                 my @s = pc16($n, @users);
1319                 for (@s) {
1320                         my $routeit = adjust_hops($self, $_);
1321                         $self->send($routeit) if $routeit;
1322                 }
1323         }
1324 }
1325
1326 #
1327 # route a message down an appropriate interface for a callsign
1328 #
1329 # is called route(to, pcline);
1330 #
1331 sub route
1332 {
1333         my ($self, $call, $line) = @_;
1334         my $cl = DXCluster->get_exact($call);
1335         if ($cl) {       # don't route it back down itself
1336                 if (ref $self && $call eq $self->{call}) {
1337                         dbg('chan', "Trying to route back to source, dropped");
1338                         return;
1339                 }
1340                 my $hops;
1341                 my $dxchan = $cl->{dxchan};
1342                 if ($dxchan) {
1343                         my $routeit = adjust_hops($dxchan, $line);   # adjust its hop count by node name
1344                         if ($routeit) {
1345                                 $dxchan->send($routeit) if $dxchan;
1346                         }
1347                 }
1348         }
1349 }
1350
1351 # broadcast a message to all clusters taking into account isolation
1352 # [except those mentioned after buffer]
1353 sub broadcast_ak1a
1354 {
1355         my $s = shift;                          # the line to be rebroadcast
1356         my @except = @_;                        # to all channels EXCEPT these (dxchannel refs)
1357         my @dxchan = DXChannel::get_all_ak1a();
1358         my $dxchan;
1359
1360         # send it if it isn't the except list and isn't isolated and still has a hop count
1361         foreach $dxchan (@dxchan) {
1362                 next if grep $dxchan == $_, @except;
1363                 my $routeit = adjust_hops($dxchan, $s);      # adjust its hop count by node name
1364                 $dxchan->send($routeit) unless $dxchan->{isolate} || !$routeit;
1365         }
1366 }
1367
1368 # broadcast a message to all clusters ignoring isolation
1369 # [except those mentioned after buffer]
1370 sub broadcast_all_ak1a
1371 {
1372         my $s = shift;                          # the line to be rebroadcast
1373         my @except = @_;                        # to all channels EXCEPT these (dxchannel refs)
1374         my @dxchan = DXChannel::get_all_ak1a();
1375         my $dxchan;
1376
1377         # send it if it isn't the except list and isn't isolated and still has a hop count
1378         foreach $dxchan (@dxchan) {
1379                 next if grep $dxchan == $_, @except;
1380                 my $routeit = adjust_hops($dxchan, $s);      # adjust its hop count by node name
1381                 $dxchan->send($routeit);
1382         }
1383 }
1384
1385 # broadcast to all users
1386 # storing the spot or whatever until it is in a state to receive it
1387 sub broadcast_users
1388 {
1389         my $s = shift;                          # the line to be rebroadcast
1390         my $sort = shift;           # the type of transmission
1391         my $fref = shift;           # a reference to an object to filter on
1392         my @except = @_;                        # to all channels EXCEPT these (dxchannel refs)
1393         my @dxchan = DXChannel::get_all_users();
1394         my $dxchan;
1395         my @out;
1396
1397         foreach $dxchan (@dxchan) {
1398                 next if grep $dxchan == $_, @except;
1399                 push @out, $dxchan;
1400         }
1401         broadcast_list($s, $sort, $fref, @out);
1402 }
1403
1404 # broadcast to a list of users
1405 sub broadcast_list
1406 {
1407         my $s = shift;
1408         my $sort = shift;
1409         my $fref = shift;
1410         my $dxchan;
1411
1412         foreach $dxchan (@_) {
1413                 my $filter = 1;
1414
1415                 if ($sort eq 'dx') {
1416                     next unless $dxchan->{dx};
1417                         ($filter) = Filter::it($dxchan->{spotfilter}, @{$fref}) if ref $fref;
1418                         next unless $filter;
1419                 }
1420                 next if $sort eq 'ann' && !$dxchan->{ann};
1421                 next if $sort eq 'wwv' && !$dxchan->{wwv};
1422                 next if $sort eq 'wcy' && !$dxchan->{wcy};
1423                 next if $sort eq 'wx' && !$dxchan->{wx};
1424
1425                 $s =~ s/\a//og unless $dxchan->{beep};
1426
1427                 if ($dxchan->{state} eq 'prompt' || $dxchan->{state} eq 'talk') {
1428                         $dxchan->send($s);
1429                 } else {
1430                         $dxchan->delay($s);
1431                 }
1432         }
1433 }
1434
1435
1436 #
1437 # obtain the hops from the list for this callsign and pc no
1438 #
1439
1440 sub get_hops
1441 {
1442         my $pcno = shift;
1443         my $hops = $DXProt::hopcount{$pcno};
1444         $hops = $DXProt::def_hopcount if !$hops;
1445         return "H$hops";
1446 }
1447
1448 #
1449 # adjust the hop count on a per node basis using the user loadable
1450 # hop table if available or else decrement an existing one
1451 #
1452
1453 sub adjust_hops
1454 {
1455         my $self = shift;
1456         my $s = shift;
1457         my $call = $self->{call};
1458         my $hops;
1459
1460         if (($hops) = $s =~ /\^H(\d+)\^~?$/o) {
1461                 my ($pcno) = $s =~ /^PC(\d\d)/o;
1462                 confess "$call called adjust_hops with '$s'" unless $pcno;
1463                 my $ref = $nodehops{$call} if %nodehops;
1464                 if ($ref) {
1465                         my $newhops = $ref->{$pcno};
1466                         return "" if defined $newhops && $newhops == 0;
1467                         $newhops = $ref->{default} unless $newhops;
1468                         return "" if defined $newhops && $newhops == 0;
1469                         $newhops = $hops if !$newhops;
1470                         $s =~ s/\^H(\d+)(\^~?)$/\^H$newhops$2/ if $newhops;
1471                 } else {
1472                         # simply decrement it
1473                         $hops--;
1474                         return "" if !$hops;
1475                         $s =~ s/\^H(\d+)(\^~?)$/\^H$hops$2/ if $hops;
1476                 }
1477         }
1478         return $s;
1479 }
1480
1481 #
1482 # load hop tables
1483 #
1484 sub load_hops
1485 {
1486         my $self = shift;
1487         return $self->msg('lh1') unless -e "$main::data/hop_table.pl";
1488         do "$main::data/hop_table.pl";
1489         return $@ if $@;
1490         return 0;
1491 }
1492
1493
1494 # add a ping request to the ping queues
1495 sub addping
1496 {
1497         my ($from, $to) = @_;
1498         my $ref = $pings{$to} || [];
1499         my $r = {};
1500         $r->{call} = $from;
1501         $r->{t} = [ gettimeofday ];
1502         route(undef, $to, pc51($to, $main::mycall, 1));
1503         push @$ref, $r;
1504         $pings{$to} = $ref;
1505 }
1506
1507 # add a rcmd request to the rcmd queues
1508 sub addrcmd
1509 {
1510         my ($self, $to, $cmd) = @_;
1511
1512         my $r = {};
1513         $r->{call} = $self->{call};
1514         $r->{t} = $main::systime;
1515         $r->{cmd} = $cmd;
1516         $rcmds{$to} = $r;
1517
1518         my $ref = DXCluster->get_exact($to);
1519     if ($ref && $ref->dxchan && $ref->dxchan->is_clx) {
1520                 route(undef, $to, pc84($main::mycall, $to, $self->{call}, $cmd));
1521         } else {
1522                 route(undef, $to, pc34($main::mycall, $to, $cmd));
1523         }
1524 }
1525
1526 sub disconnect
1527 {
1528         my $self = shift;
1529         my $nopc39 = shift;
1530
1531         if ($self->{conn} && !$nopc39) {
1532                 $self->send_now("D", DXProt::pc39($main::mycall, $self->msg('disc1', "System Op")));
1533         }
1534
1535         $self->SUPER::disconnect;
1536 }
1537
1538
1539 #
1540 # send a talk message to this thingy
1541 #
1542 sub talk
1543 {
1544         my ($self, $from, $to, $via, $line) = @_;
1545
1546         $line =~ s/\^/\\5E/g;                   # remove any ^ characters
1547         $self->send(DXProt::pc10($from, $to, $via, $line));
1548         Log('talk', $self->call, $from, $via?$via:$main::mycall, $line);
1549 }
1550 1;
1551 __END__