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
  34 use strict;
  35 use vars qw($me $pc11_max_age $pc23_max_age
  36                         $last_hour %pings %rcmds
  37                         %nodehops @baddx $baddxfn $censorpc
  38                         $allowzero $decode_dk0wcy $send_opernam @checklist);
  39
  40 $me = undef;                                    # the channel id for this cluster
  41 $pc11_max_age = 1*3600;                 # the maximum age for an incoming 'real-time' pc11
  42 $pc23_max_age = 1*3600;                 # the maximum age for an incoming 'real-time' pc23
  43
  44 $last_hour = time;                              # last time I did an hourly periodic update
  45 %pings = ();                    # outstanding ping requests outbound
  46 %rcmds = ();                    # outstanding rcmd requests outbound
  47 %nodehops = ();                 # node specific hop control
  48 @baddx = ();                    # list of illegal spotted callsigns
  49 $censorpc = 0;                                  # Do a BadWords::check on text fields and reject things
  50
  51 $baddxfn = "$main::data/baddx.pl";
  52
  53 @checklist =
  54 (
  55  [ qw(c c m bp bc c) ],                 # pc10
  56  [ qw(f m d t m c c h) ],               # pc11
  57  [ qw(c bc m bp bm p h) ],              # pc12
  58  [ qw(c h) ],                                   #
  59  [ qw(c h) ],                                   #
  60  [ qw(c m h) ],                                 #
  61  undef ,                                                # pc16 has to be validated manually
  62  [ qw(c c h) ],                                 # pc17
  63  [ qw(m n) ],                                   # pc18
  64  undef ,                                                # pc19 has to be validated manually
  65  undef ,                                                # pc20 no validation
  66  [ qw(c m h) ],                                 # pc21
  67  undef ,                                                # pc22 no validation
  68  [ qw(d n n n n m c c h) ],             # pc23
  69  [ qw(c p h) ],                                 # pc24
  70  [ qw(c c n n) ],                               # pc25
  71  [ qw(f m d t m c c bc) ],              # pc26
  72  [ qw(d n n n n m c c bc) ],    # pc27
  73  [ qw(c c m c d t p m bp n p bp bc) ], # pc28
  74  [ qw(c c n m) ],                               # pc29
  75  [ qw(c c n) ],                                 # pc30
  76  [ qw(c c n) ],                                 # pc31
  77  [ qw(c c n) ],                                 # pc32
  78  [ qw(c c n) ],                                 # pc33
  79  [ qw(c c m) ],                                 # pc34
  80  [ qw(c c m) ],                                 # pc35
  81  [ qw(c c m) ],                                 # pc36
  82  [ qw(c c n m) ],                               # pc37
  83  undef,                                                 # pc38 not interested
  84  [ qw(c m) ],                                   # pc39
  85  [ qw(c c m p n) ],                             # pc40
  86  [ qw(c n m h) ],                               # pc41
  87  [ qw(c c n) ],                                 # pc42
  88  undef,                                                 # pc43 don't handle it
  89  [ qw(c c n m m c) ],                   # pc44
  90  [ qw(c c n m) ],                               # pc45
  91  [ qw(c c n) ],                                 # pc46
  92  undef,                                                 # pc47
  93  undef,                                                 # pc48
  94  [ qw(c m h) ],                                 # pc49
  95  [ qw(c n h) ],                                 # pc50
  96  [ qw(c c n) ],                                 # pc51
  97  undef,
  98  undef,
  99  undef,
 100  undef,
 101  undef,
 102  undef,
 103  undef,
 104  undef,
 105  undef,                                                 # pc60
 106  undef,
 107  undef,
 108  undef,
 109  undef,
 110  undef,
 111  undef,
 112  undef,
 113  undef,
 114  undef,
 115  undef,                                                 # pc70
 116  undef,
 117  undef,
 118  [ qw(d n n n n n n m m m c c h) ],     # pc73
 119  undef,
 120  undef,
 121  undef,
 122  undef,
 123  undef,
 124  undef,
 125  undef,                                                 # pc80
 126  undef,
 127  undef,
 128  undef,
 129  [ qw(c c c m) ],                               # pc84
 130  [ qw(c c c m) ],                               # pc85
 131 );
 132
 133 # use the entry in the check list to check the field list presented
 134 # return OK if line NOT in check list (for now)
 135 sub check
 136 {
 137         my $n = shift;
 138         $n -= 10;
 139         return 0 if $n < 0 || $n > @checklist;
 140         my $ref = $checklist[$n];
 141         return 0 unless ref $ref;
 142
 143         my $i;
 144         shift;    # not interested in the first field
 145         for ($i = 0; $i < @$ref; $i++) {
 146                 my ($blank, $act) = $$ref[$i] =~ /^(b?)(\w)$/;
 147                 return 0 unless $act;
 148                 next if $blank && $_[$i] =~ /^[ \*]$/;
 149                 if ($act eq 'c') {
 150                         return $i+1 unless is_callsign($_[$i]);
 151                 } elsif ($act eq 'm') {
 152                         return $i+1 unless is_pctext($_[$i]);
 153                 } elsif ($act eq 'p') {
 154                         return $i+1 unless is_pcflag($_[$i]);
 155                 } elsif ($act eq 'f') {
 156                         return $i+1 unless is_freq($_[$i]);
 157                 } elsif ($act eq 'n') {
 158                         return $i+1 unless $_[$i] =~ /^[\d ]+$/;
 159                 } elsif ($act eq 'h') {
 160                         return $i+1 unless $_[$i] =~ /^H\d\d?$/;
 161                 } elsif ($act eq 'd') {
 162                         return $i+1 unless $_[$i] =~ /^\s*\d+-\w\w\w-[12][90]\d\d$/;
 163                 } elsif ($act eq 't') {
 164                         return $i+1 unless $_[$i] =~ /^[012]\d[012345]\dZ$/;
 165                 }
 166         }
 167         return 0;
 168 }
 169
 170 sub init
 171 {
 172         my $user = DXUser->get($main::mycall);
 173         $DXProt::myprot_version += $main::version*100;
 174         $me = DXProt->new($main::mycall, 0, $user);
 175         $me->{here} = 1;
 176         $me->{state} = "indifferent";
 177         do "$main::data/hop_table.pl" if -e "$main::data/hop_table.pl";
 178         confess $@ if $@;
 179         $me->{sort} = 'S';    # S for spider
 180
 181         # load the baddx file
 182         do "$baddxfn" if -e "$baddxfn";
 183         print "$@\n" if $@;
 184 }
 185
 186 #
 187 # obtain a new connection this is derived from dxchannel
 188 #
 189
 190 sub new
 191 {
 192         my $self = DXChannel::alloc(@_);
 193         return $self;
 194 }
 195
 196 # this is how a pc connection starts (for an incoming connection)
 197 # issue a PC38 followed by a PC18, then wait for a PC20 (remembering
 198 # all the crap that comes between).
 199 sub start
 200 {
 201         my ($self, $line, $sort) = @_;
 202         my $call = $self->{call};
 203         my $user = $self->{user};
 204
 205         # remember type of connection
 206         $self->{consort} = $line;
 207         $self->{outbound} = $sort eq 'O';
 208         $self->{priv} = $user->priv || 1;     # other clusters can always be 'normal' users
 209         $self->{lang} = $user->lang || 'en';
 210         $self->{isolate} = $user->{isolate};
 211         $self->{consort} = $line;       # save the connection type
 212         $self->{here} = 1;
 213
 214         # get the output filters
 215         $self->{spotsfilter} = Filter::read_in('spots', $call, 0) || Filter::read_in('spots', 'node_default', 0);
 216         $self->{wwvfilter} = Filter::read_in('wwv', $call, 0) || Filter::read_in('wwv', 'node_default', 0);
 217         $self->{wcyfilter} = Filter::read_in('wcy', $call, 0) || Filter::read_in('wcy', 'node_default', 0);
 218         $self->{annfilter} = Filter::read_in('ann', $call, 0) || Filter::read_in('ann', 'node_default', 0) ;
 219
 220
 221         # get the INPUT filters (these only pertain to Clusters)
 222         $self->{inspotsfilter} = Filter::read_in('spots', $call, 1) || Filter::read_in('spots', 'node_default', 1);
 223         $self->{inwwvfilter} = Filter::read_in('wwv', $call, 1) || Filter::read_in('wwv', 'node_default', 1);
 224         $self->{inwcyfilter} = Filter::read_in('wcy', $call, 1) || Filter::read_in('wcy', 'node_default', 1);
 225         $self->{inannfilter} = Filter::read_in('ann', $call, 1) || Filter::read_in('ann', 'node_default', 1);
 226
 227         # set unbuffered and no echo
 228         $self->send_now('B',"0");
 229         $self->send_now('E',"0");
 230
 231         # ping neighbour node stuff
 232         my $ping = $user->pingint;
 233         $ping = 5*60 unless defined $ping;
 234         $self->{pingint} = $ping;
 235         $self->{nopings} = $user->nopings || 2;
 236         $self->{pingtime} = [ ];
 237         $self->{pingave} = 0;
 238
 239         # send initialisation string
 240         unless ($self->{outbound}) {
 241 #               $self->send(pc38()) if DXNode->get_all();
 242                 $self->send(pc18());
 243                 $self->{lastping} = $main::systime;
 244         } else {
 245                 # remove from outstanding connects queue
 246                 @main::outstanding_connects = grep {$_->{call} ne $call} @main::outstanding_connects;
 247                 $self->{lastping} = $main::systime + $self->pingint / 2;
 248         }
 249         $self->state('init');
 250         $self->pc50_t(time);
 251
 252         # send info to all logged in thingies
 253         $self->tell_login('loginn');
 254
 255         Log('DXProt', "$call connected");
 256 }
 257
 258 #
 259 # This is the normal pcxx despatcher
 260 #
 261 sub normal
 262 {
 263         my ($self, $line) = @_;
 264         my @field = split /\^/, $line;
 265         return unless @field;
 266
 267         pop @field if $field[-1] eq '~';
 268
 269 #       print join(',', @field), "\n";
 270
 271         # ignore any lines that don't start with PC
 272         return if !$field[0] =~ /^PC/;
 273
 274         # process PC frames
 275         my ($pcno) = $field[0] =~ /^PC(\d\d)/; # just get the number
 276         return unless $pcno;
 277         return if $pcno < 10 || $pcno > 99;
 278
 279         # check for and dump bad protocol messages
 280         my $n = check($pcno, @field);
 281         if ($n) {
 282                 dbg('chan', "PCPROT: bad field $n, dumped (" . parray($checklist[$pcno-10]) . ")");
 283                 return;
 284         }
 285
 286         # local processing 1
 287         my $pcr;
 288         eval {
 289                 $pcr = Local::pcprot($self, $pcno, @field);
 290         };
 291 #       dbg('local', "Local::pcprot error $@") if $@;
 292         return if $pcr;
 293
 294  SWITCH: {
 295                 if ($pcno == 10) {              # incoming talk
 296
 297                         # will we allow it at all?
 298                         if ($censorpc) {
 299                                 my @bad;
 300                                 if (@bad = BadWords::check($field[3])) {
 301                                         dbg('chan', "PCPROT: Bad words: @bad, dropped" );
 302                                         return;
 303                                 }
 304                         }
 305
 306                         # is it for me or one of mine?
 307                         my ($to, $via, $call, $dxchan);
 308                         if ($field[5] gt ' ') {
 309                                 $call = $via = $field[2];
 310                                 $to = $field[5];
 311                         } else {
 312                                 $call = $to = $field[2];
 313                         }
 314                         $dxchan = DXChannel->get($call);
 315                         if ($dxchan && $dxchan->is_user) {
 316                                 $field[3] =~ s/\%5E/^/g;
 317                                 $dxchan->talk($field[1], $to, $via, $field[3]);
 318                         } else {
 319                                 $self->route($field[2], $line); # relay it on its way
 320                         }
 321                         return;
 322                 }
 323
 324                 if ($pcno == 11 || $pcno == 26) { # dx spot
 325
 326                         # route 'foreign' pc26s
 327                         if ($pcno == 26) {
 328                                 if ($field[7] ne $main::mycall) {
 329                                         $self->route($field[7], $line);
 330                                         return;
 331                                 }
 332                         }
 333
 334                         # if this is a 'nodx' node then ignore it
 335                         if (grep $field[7] =~ /^$_/,  @DXProt::nodx_node) {
 336                                 dbg('chan', "PCPROT: Bad DXNode, dropped");
 337                                 return;
 338                         }
 339
 340                         # convert the date to a unix date
 341                         my $d = cltounix($field[3], $field[4]);
 342                         # bang out (and don't pass on) if date is invalid or the spot is too old (or too young)
 343                         if (!$d || ($pcno == 11 && ($d < $main::systime - $pc11_max_age || $d > $main::systime + 900))) {
 344                                 dbg('chan', "PCPROT: Spot ignored, invalid date or out of range ($field[3] $field[4])\n");
 345                                 return;
 346                         }
 347
 348                         # is it 'baddx'
 349                         if (grep $field[2] eq $_, @baddx) {
 350                                 dbg('chan', "PCPROT: Bad DX spot, ignored");
 351                                 return;
 352                         }
 353
 354                         # do some de-duping
 355                         $field[5] =~ s/^\s+//;      # take any leading blanks off
 356                         if (Spot::dup($field[1], $field[2], $d, $field[5])) {
 357                                 dbg('chan', "PCPROT: Duplicate Spot ignored\n");
 358                                 return;
 359                         }
 360                         if ($censorpc) {
 361                                 my @bad;
 362                                 if (@bad = BadWords::check($field[5])) {
 363                                         dbg('chan', "PCPROT: Bad words: @bad, dropped" );
 364                                         return;
 365                                 }
 366                         }
 367
 368                         my @spot = Spot::add($field[1], $field[2], $d, $field[5], $field[6], $field[7]);
 369
 370             #
 371                         # @spot at this point contains:-
 372             # freq, spotted call, time, text, spotter, spotted cc, spotters cc, orig node
 373                         # then  spotted itu, spotted cq, spotters itu, spotters cq
 374                         # you should be able to route on any of these
 375             #
 376
 377                         # fix up qra locators of known users
 378                         my $user = DXUser->get_current($spot[4]);
 379                         if ($user) {
 380                                 my $qra = $user->qra;
 381                                 unless ($qra && DXBearing::is_qra($qra)) {
 382                                         my $lat = $user->lat;
 383                                         my $long = $user->long;
 384                                         if (defined $lat && defined $long) {
 385                                                 $user->qra(DXBearing::lltoqra($lat, $long));
 386                                                 $user->put;
 387                                         }
 388                                 }
 389
 390                                 # send a remote command to a distant cluster if it is visible and there is no
 391                                 # qra locator and we havn't done it for a month.
 392
 393                                 unless ($user->qra) {
 394                                         my $node;
 395                                         my $to = $user->homenode;
 396                                         my $last = $user->lastoper || 0;
 397                                         if ($send_opernam && $main::systime > $last + $DXUser::lastoperinterval && $to && ($node = DXCluster->get_exact($to)) ) {
 398                                                 my $cmd = "forward/opernam $spot[4]";
 399                                                 # send the rcmd but we aren't interested in the replies...
 400                                                 if ($node && $node->dxchan && $node->dxchan->is_clx) {
 401                                                         route(undef, $to, pc84($main::mycall, $to, $main::mycall, $cmd));
 402                                                 } else {
 403                                                         route(undef, $to, pc34($main::mycall, $to, $cmd));
 404                                                 }
 405                                                 if ($to ne $field[7]) {
 406                                                         $to = $field[7];
 407                                                         $node = DXCluster->get_exact($to);
 408                                                         if ($node && $node->dxchan && $node->dxchan->is_clx) {
 409                                                                 route(undef, $to, pc84($main::mycall, $to, $main::mycall, $cmd));
 410                                                         } else {
 411                                                                 route(undef, $to, pc34($main::mycall, $to, $cmd));
 412                                                         }
 413                                                 }
 414                                                 $user->lastoper($main::systime);
 415                                                 $user->put;
 416                                         }
 417                                 }
 418                         }
 419
 420                         # local processing
 421                         my $r;
 422                         eval {
 423                                 $r = Local::spot($self, @spot);
 424                         };
 425 #                       dbg('local', "Local::spot1 error $@") if $@;
 426                         return if $r;
 427
 428                         # DON'T be silly and send on PC26s!
 429                         return if $pcno == 26;
 430
 431                         # send out the filtered spots
 432                         send_dx_spot($self, $line, @spot) if @spot;
 433                         return;
 434                 }
 435
 436                 if ($pcno == 12) {              # announces
 437                         # announce duplicate checking
 438                         $field[3] =~ s/^\s+//;  # remove leading blanks
 439                         if (AnnTalk::dup($field[1], $field[2], $field[3])) {
 440                                 dbg('chan', "PCPROT: Duplicate Announce ignored");
 441                                 return;
 442                         }
 443
 444                         if ($censorpc) {
 445                                 my @bad;
 446                                 if (@bad = BadWords::check($field[3])) {
 447                                         dbg('chan', "PCPROT: Bad words: @bad, dropped" );
 448                                         return;
 449                                 }
 450                         }
 451
 452                         if ($field[2] eq '*' || $field[2] eq $main::mycall) {
 453
 454                                 # global ann filtering on INPUT
 455                                 if ($self->{inannfilter}) {
 456                                         my ($ann_dxcc, $ann_itu, $ann_cq, $org_dxcc, $org_itu, $org_cq) = (0..0);
 457                                         my @dxcc = Prefix::extract($field[1]);
 458                                         if (@dxcc > 0) {
 459                                                 $ann_dxcc = $dxcc[1]->dxcc;
 460                                                 $ann_itu = $dxcc[1]->itu;
 461                                                 $ann_cq = $dxcc[1]->cq();
 462                                         }
 463                                         @dxcc = Prefix::extract($field[5]);
 464                                         if (@dxcc > 0) {
 465                                                 $org_dxcc = $dxcc[1]->dxcc;
 466                                                 $org_itu = $dxcc[1]->itu;
 467                                                 $org_cq = $dxcc[1]->cq();
 468                                         }
 469                                         my ($filter, $hops) = $self->{inannfilter}->it(@field[1..6], $self->{call},
 470                                                                                                         $ann_dxcc, $ann_itu, $ann_cq, $org_dxcc, $org_itu, $org_cq);
 471                                         unless ($filter) {
 472                                                 dbg('chan', "PCPROT: Rejected by filter");
 473                                                 return;
 474                                         }
 475                                 }
 476
 477                                 # send it
 478                                 $self->send_announce($line, @field[1..6]);
 479                         } else {
 480                                 $self->route($field[2], $line);
 481                         }
 482
 483                         return;
 484                 }
 485
 486                 if ($pcno == 13) {
 487                         last SWITCH;
 488                 }
 489                 if ($pcno == 14) {
 490                         last SWITCH;
 491                 }
 492                 if ($pcno == 15) {
 493                         last SWITCH;
 494                 }
 495
 496                 if ($pcno == 16) {              # add a user
 497                         my $node = DXCluster->get_exact($field[1]);
 498                         my $dxchan;
 499                         if (!$node && ($dxchan = DXChannel->get($field[1]))) {
 500                                 # add it to the node table if it isn't present and it's
 501                                 # connected locally
 502                                 $node = DXNode->new($dxchan, $field[1], 0, 1, 5400);
 503                                 dbg('chan', "PCPROT: $field[1] no PC19 yet, autovivified as node");
 504 #                               broadcast_ak1a(pc19($dxchan, $node), $dxchan, $self) unless $dxchan->{isolate};
 505
 506                         }
 507                         if ($field[1] eq $main::mycall || $field[2] eq $main::mycall) {
 508                                 dbg('chan', "PCPROT: trying to alter config on this node from outside!");
 509                                 return;
 510                         }
 511                         if ($field[2] eq $main::myalias && DXChannel->get($field[1])) {
 512                                 dbg('chan', "PCPROT: trying to connect sysop from outside!");
 513                                 return;
 514                         }
 515                         unless ($node) {
 516                                 dbg('chan', "PCPROT: Node $field[1] not in config");
 517                                 return;
 518                         }
 519                         unless ($node->isa('DXNode')) {
 520                                 dbg('chan', "PCPROT: $field[1] is not a node");
 521                                 return;
 522                         }
 523                         if ($node->dxchan != $self) {
 524                                 dbg('chan', "PCPROT: $field[1] came in on wrong channel");
 525                                 return;
 526                         }
 527                         if (($dxchan = DXChannel->get($field[1])) && $dxchan != $self) {
 528                                 dbg('chan', "PCPROT: $field[1] connected locally");
 529                                 return;
 530                         }
 531                         my $i;
 532
 533                         for ($i = 2; $i < $#field; $i++) {
 534                                 my ($call, $confmode, $here) = $field[$i] =~ /^(\S+) (\S) (\d)/o;
 535                                 next unless $call && $confmode && defined $here && is_callsign($call);
 536                                 my $ref = DXCluster->get_exact($call);
 537                                 if ($ref) {
 538                                         if ($ref->isa('DXNode')) {
 539                                                 dbg('chan', "PCPROT: $call is a node");
 540                                                 next;
 541                                         }
 542                                         my $rcall = $ref->mynode->call;
 543                                         dbg('chan', "PCPROT: already have $call on $rcall");
 544                                         next;
 545                                 }
 546
 547                                 $confmode = $confmode eq '*';
 548                                 DXNodeuser->new($self, $node, $call, $confmode, $here);
 549
 550                                 # add this station to the user database, if required
 551                                 $call =~ s/-\d+$//o;        # remove ssid for users
 552                                 my $user = DXUser->get_current($call);
 553                                 $user = DXUser->new($call) if !$user;
 554                                 $user->homenode($node->call) if !$user->homenode;
 555                                 $user->node($node->call);
 556                                 $user->lastin($main::systime) unless DXChannel->get($call);
 557                                 $user->put;
 558                         }
 559
 560                         # queue up any messages (look for privates only)
 561                         DXMsg::queue_msg(1) if $self->state eq 'normal';
 562                         last SWITCH;
 563                 }
 564
 565                 if ($pcno == 17) {              # remove a user
 566                         my $node = DXCluster->get_exact($field[2]);
 567                         my $dxchan;
 568                         if (!$node && ($dxchan = DXChannel->get($field[2]))) {
 569                                 # add it to the node table if it isn't present and it's
 570                                 # connected locally
 571                                 $node = DXNode->new($dxchan, $field[2], 0, 1, 5400);
 572                                 dbg('chan', "PCPROT: $field[2] no PC19 yet, autovivified as node");
 573 #                               broadcast_ak1a(pc19($dxchan, $node), $dxchan, $self) unless $dxchan->{isolate};
 574                         }
 575                         if ($field[1] eq $main::mycall || $field[2] eq $main::mycall) {
 576                                 dbg('chan', "PCPROT: trying to alter config on this node from outside!");
 577                                 return;
 578                         }
 579                         if ($field[1] eq $main::myalias && DXChannel->get($field[1])) {
 580                                 dbg('chan', "PCPROT: trying to disconnect sysop from outside!");
 581                                 return;
 582                         }
 583                         unless ($node) {
 584                                 dbg('chan', "PCPROT: Node $field[2] not in config");
 585                                 return;
 586                         }
 587                         unless ($node->isa('DXNode')) {
 588                                 dbg('chan', "PCPROT: $field[2] is not a node");
 589                                 return;
 590                         }
 591                         if ($node->dxchan != $self) {
 592                                 dbg('chan', "PCPROT: $field[2] came in on wrong channel");
 593                                 return;
 594                         }
 595                         if (($dxchan = DXChannel->get($field[2])) && $dxchan != $self) {
 596                                 dbg('chan', "PCPROT: $field[2] connected locally");
 597                                 return;
 598                         }
 599                         my $ref = DXCluster->get_exact($field[1]);
 600                         if ($ref) {
 601                                 $ref->del;
 602                         } else {
 603                                 dbg('chan', "PCPROT: $field[1] not known" );
 604                                 return;
 605                         }
 606                         last SWITCH;
 607                 }
 608
 609                 if ($pcno == 18) {              # link request
 610                         $self->state('init');
 611
 612                         # first clear out any nodes on this dxchannel
 613                         my @gonenodes = map { $_->dxchan == $self ? $_ : () } DXNode::get_all();
 614                         foreach my $node (@gonenodes) {
 615                                 next if $node->dxchan == $DXProt::me;
 616                                 broadcast_ak1a(pc21($node->call, 'Gone, re-init') , $self) unless $self->{isolate};
 617                                 $node->del();
 618                         }
 619                         $self->send_local_config();
 620                         $self->send(pc20());
 621                         return;             # we don't pass these on
 622                 }
 623
 624                 if ($pcno == 19) {              # incoming cluster list
 625                         my $i;
 626                         my $newline = "PC19^";
 627                         for ($i = 1; $i < $#field-1; $i += 4) {
 628                                 my $here = $field[$i];
 629                                 my $call = uc $field[$i+1];
 630                                 my $confmode = $field[$i+2];
 631                                 my $ver = $field[$i+3];
 632                                 next unless defined $here && defined $confmode && is_callsign($call);
 633
 634                                 $ver = 5400 if !$ver && $allowzero;
 635
 636                                 # now check the call over
 637                                 my $node = DXCluster->get_exact($call);
 638                                 if ($node) {
 639                                         my $dxchan;
 640                                         if (($dxchan = DXChannel->get($call)) && $dxchan != $self) {
 641                                                 dbg('chan', "PCPROT: $call connected locally");
 642                                         }
 643                                     if ($node->dxchan != $self) {
 644                                                 dbg('chan', "PCPROT: $call come in on wrong channel");
 645                                                 next;
 646                                         }
 647                                         my $rcall = $node->mynode->call;
 648                                         dbg('chan', "PCPROT: already have $call on $rcall");
 649                                         next;
 650                                 }
 651
 652                                 # check for sane parameters
 653                                 next if $ver < 5000; # only works with version 5 software
 654                                 next if length $call < 3; # min 3 letter callsigns
 655
 656                                 # add it to the nodes table and outgoing line
 657                                 $newline .= "$here^$call^$confmode^$ver^";
 658                                 DXNode->new($self, $call, $confmode, $here, $ver);
 659
 660                                 # unbusy and stop and outgoing mail (ie if somehow we receive another PC19 without a disconnect)
 661                                 my $mref = DXMsg::get_busy($call);
 662                                 $mref->stop_msg($call) if $mref;
 663
 664                                 # add this station to the user database, if required (don't remove SSID from nodes)
 665                                 my $user = DXUser->get_current($call);
 666                                 if (!$user) {
 667                                         $user = DXUser->new($call);
 668                                         $user->sort('A');
 669                                         $user->priv(1);                   # I have relented and defaulted nodes
 670                                         $self->{priv} = 1;                # to user RCMDs allowed
 671                                         $user->homenode($call);
 672                                         $user->node($call);
 673                                 }
 674                                 $user->lastin($main::systime) unless DXChannel->get($call);
 675                                 $user->put;
 676                         }
 677
 678                         return if $newline eq "PC19^";
 679
 680                         # add hop count
 681                         $newline .=  get_hops(19) . "^";
 682                         $line = $newline;
 683                         last SWITCH;
 684                 }
 685
 686                 if ($pcno == 20) {              # send local configuration
 687                         $self->send_local_config();
 688                         $self->send(pc22());
 689                         $self->state('normal');
 690                         return;
 691                 }
 692
 693                 if ($pcno == 21) {              # delete a cluster from the list
 694                         my $call = uc $field[1];
 695                         if ($call ne $main::mycall) { # don't allow malicious buggers to disconnect me!
 696                                 my $node = DXCluster->get_exact($call);
 697                                 if ($node) {
 698                                         unless ($node->isa('DXNode')) {
 699                                                 dbg('chan', "PCPROT: $call is not a node");
 700                                                 return;
 701                                         }
 702                                         if ($call eq $self->{call}) {
 703                                                 dbg('chan', "PCPROT: Trying to disconnect myself with PC21");
 704                                                 return;
 705                                         }
 706                                         if ($node->dxchan != $self) {
 707                                                 dbg('chan', "PCPROT: $call come in on wrong channel");
 708                                                 return;
 709                                         }
 710                                         my $dxchan;
 711                                         if ($dxchan = DXChannel->get($call)) {
 712                                                 dbg('chan', "PCPROT: $call connected locally");
 713                                                 return;
 714                                         }
 715                                         $node->del();
 716                                 } else {
 717                                         dbg('chan', "PCPROT: $call not in table, dropped");
 718                                         return;
 719                                 }
 720                         } else {
 721                                 dbg('chan', "PCPROT: I WILL _NOT_ be disconnected!");
 722                                 return;
 723                         }
 724                         last SWITCH;
 725                 }
 726
 727                 if ($pcno == 22) {
 728                         $self->state('normal');
 729                         return;
 730                 }
 731
 732                 if ($pcno == 23 || $pcno == 27) { # WWV info
 733
 734                         # route 'foreign' pc27s
 735                         if ($pcno == 27) {
 736                                 if ($field[8] ne $main::mycall) {
 737                                         $self->route($field[8], $line);
 738                                         return;
 739                                 }
 740                         }
 741
 742                         # do some de-duping
 743                         my $d = cltounix($field[1], sprintf("%02d18Z", $field[2]));
 744                         my $sfi = unpad($field[3]);
 745                         my $k = unpad($field[4]);
 746                         my $i = unpad($field[5]);
 747                         my ($r) = $field[6] =~ /R=(\d+)/;
 748                         $r = 0 unless $r;
 749                         if (($pcno == 23 && $d < $main::systime - $pc23_max_age) || $d > $main::systime + 1500 || $field[2] < 0 || $field[2] > 23) {
 750                                 dbg('chan', "PCPROT: WWV Date ($field[1] $field[2]) out of range");
 751                                 return;
 752                         }
 753                         if (Geomag::dup($d,$sfi,$k,$i,$field[6])) {
 754                                 dbg('chan', "PCPROT: Dup WWV Spot ignored\n");
 755                                 return;
 756                         }
 757                         $field[7] =~ s/-\d+$//o;            # remove spotter's ssid
 758
 759                         my $wwv = Geomag::update($d, $field[2], $sfi, $k, $i, @field[6..8], $r);
 760
 761                         my $rep;
 762                         eval {
 763                                 $rep = Local::wwv($self, $field[1], $field[2], $sfi, $k, $i, @field[6..8], $r);
 764                         };
 765 #                       dbg('local', "Local::wwv2 error $@") if $@;
 766                         return if $rep;
 767
 768                         # DON'T be silly and send on PC27s!
 769                         return if $pcno == 27;
 770
 771                         # broadcast to the eager world
 772                         send_wwv_spot($self, $line, $d, $field[2], $sfi, $k, $i, @field[6..8]);
 773                         return;
 774                 }
 775
 776                 if ($pcno == 24) {              # set here status
 777                         my $call = uc $field[1];
 778                         my $ref = DXCluster->get_exact($call);
 779                         $ref->here($field[2]) if $ref;
 780                         last SWITCH;
 781                 }
 782
 783                 if ($pcno == 25) {      # merge request
 784                         if ($field[1] ne $main::mycall) {
 785                                 $self->route($field[1], $line);
 786                                 return;
 787                         }
 788                         if ($field[2] eq $main::mycall) {
 789                                 dbg('chan', "PCPROT: Trying to merge to myself, ignored");
 790                                 return;
 791                         }
 792
 793                         Log('DXProt', "Merge request for $field[3] spots and $field[4] WWV from $field[1]");
 794
 795                         # spots
 796                         if ($field[3] > 0) {
 797                                 my @in = reverse Spot::search(1, undef, undef, 0, $field[3]);
 798                                 my $in;
 799                                 foreach $in (@in) {
 800                                         $self->send(pc26(@{$in}[0..4], $field[2]));
 801                                 }
 802                         }
 803
 804                         # wwv
 805                         if ($field[4] > 0) {
 806                                 my @in = reverse Geomag::search(0, $field[4], time, 1);
 807                                 my $in;
 808                                 foreach $in (@in) {
 809                                         $self->send(pc27(@{$in}[0..5], $field[2]));
 810                                 }
 811                         }
 812                         return;
 813                 }
 814
 815                 if (($pcno >= 28 && $pcno <= 33) || $pcno == 40 || $pcno == 42 || $pcno == 49) { # mail/file handling
 816                         if ($pcno == 49 || $field[1] eq $main::mycall) {
 817                                 DXMsg::process($self, $line);
 818                         } else {
 819                                 $self->route($field[1], $line) unless $self->is_clx;
 820                         }
 821                         return;
 822                 }
 823
 824                 if ($pcno == 34 || $pcno == 36) { # remote commands (incoming)
 825                         if ($field[1] eq $main::mycall) {
 826                                 my $ref = DXUser->get_current($field[2]);
 827                                 my $cref = DXCluster->get($field[2]);
 828                                 Log('rcmd', 'in', $ref->{priv}, $field[2], $field[3]);
 829                                 unless (!$cref || !$ref || $cref->mynode->call ne $ref->homenode) {    # not allowed to relay RCMDS!
 830                                         if ($ref->{priv}) {     # you have to have SOME privilege, the commands have further filtering
 831                                                 $self->{remotecmd} = 1; # for the benefit of any command that needs to know
 832                                                 my $oldpriv = $self->{priv};
 833                                                 $self->{priv} = $ref->{priv};     # assume the user's privilege level
 834                                                 my @in = (DXCommandmode::run_cmd($self, $field[3]));
 835                                                 $self->{priv} = $oldpriv;
 836                                                 for (@in) {
 837                                                         s/\s*$//og;
 838                                                         $self->send(pc35($main::mycall, $field[2], "$main::mycall:$_"));
 839                                                         Log('rcmd', 'out', $field[2], $_);
 840                                                 }
 841                                                 delete $self->{remotecmd};
 842                                         } else {
 843                                                 $self->send(pc35($main::mycall, $field[2], "$main::mycall:sorry...!"));
 844                                         }
 845                                 } else {
 846                                         $self->send(pc35($main::mycall, $field[2], "$main::mycall:your attempt is logged, Tut tut tut...!"));
 847                                 }
 848                         } else {
 849                                 my $ref = DXUser->get_current($field[1]);
 850                                 if ($ref && $ref->is_clx) {
 851                                         route($field[1], pc84($field[2], $field[1], $field[2], $field[3]));
 852                                 } else {
 853                                         $self->route($field[1], $line);
 854                                 }
 855                         }
 856                         return;
 857                 }
 858
 859                 if ($pcno == 35) {              # remote command replies
 860                         if ($field[1] eq $main::mycall) {
 861                                 my $s = $rcmds{$field[2]};
 862                                 if ($s) {
 863                                         my $dxchan = DXChannel->get($s->{call});
 864                                         $dxchan->send($field[3]) if $dxchan;
 865                                         delete $rcmds{$field[2]} if !$dxchan;
 866                                 } else {
 867                                         # send unsolicited ones to the sysop
 868                                         my $dxchan = DXChannel->get($main::myalias);
 869                                         $dxchan->send($field[3]) if $dxchan;
 870                                 }
 871                         } else {
 872                                 my $ref = DXUser->get_current($field[1]);
 873                                 if ($ref && $ref->is_clx) {
 874                                         route($field[1], pc85($field[2], $field[1], $field[2], $field[3]));
 875                                 } else {
 876                                         $self->route($field[1], $line);
 877                                 }
 878                         }
 879                         return;
 880                 }
 881
 882                 # for pc 37 see 44 onwards
 883
 884                 if ($pcno == 38) {              # node connected list from neighbour
 885                         return;
 886                 }
 887
 888                 if ($pcno == 39) {              # incoming disconnect
 889                         if ($field[1] eq $self->{call}) {
 890                                 $self->disconnect(1);
 891                         } else {
 892                                 dbg('chan', "PCPROT: came in on wrong channel");
 893                         }
 894                         return;
 895                 }
 896
 897                 if ($pcno == 41) {              # user info
 898                         # add this station to the user database, if required
 899                         my $user = DXUser->get_current($field[1]);
 900                         $user = DXUser->new($field[1]) if !$user;
 901
 902                         if ($field[2] == 1) {
 903                                 $user->name($field[3]);
 904                         } elsif ($field[2] == 2) {
 905                                 $user->qth($field[3]);
 906                         } elsif ($field[2] == 3) {
 907                                 my ($lat, $long) = DXBearing::stoll($field[3]);
 908                                 $user->lat($lat);
 909                                 $user->long($long);
 910                                 $user->qra(DXBearing::lltoqra($lat, $long)) unless $user->qra && DXBearing::is_qra($user->qra);
 911                         } elsif ($field[2] == 4) {
 912                                 $user->homenode($field[3]);
 913                         }
 914                         $user->lastoper($main::systime);   # to cut down on excessive for/opers being generated
 915                         $user->put;
 916                         last SWITCH;
 917                 }
 918                 if ($pcno == 43) {
 919                         last SWITCH;
 920                 }
 921                 if ($pcno == 37 || $pcno == 44 || $pcno == 45 || $pcno == 46 || $pcno == 47 || $pcno == 48) {
 922                         DXDb::process($self, $line);
 923                         return;
 924                 }
 925
 926                 if ($pcno == 50) {              # keep alive/user list
 927                         my $node = DXCluster->get_exact($field[1]);
 928                         if ($node) {
 929                                 return unless $node->isa('DXNode');
 930                                 return unless $node->dxchan == $self;
 931                                 $node->update_users($field[2]);
 932                         }
 933                         last SWITCH;
 934                 }
 935
 936                 if ($pcno == 51) {              # incoming ping requests/answers
 937
 938                         # is it for us?
 939                         if ($field[1] eq $main::mycall) {
 940                                 my $flag = $field[3];
 941                                 if ($flag == 1) {
 942                                         $self->send(pc51($field[2], $field[1], '0'));
 943                                 } else {
 944                                         # it's a reply, look in the ping list for this one
 945                                         my $ref = $pings{$field[2]};
 946                                         if ($ref) {
 947                                                 my $tochan =  DXChannel->get($field[2]);
 948                                                 while (@$ref) {
 949                                                         my $r = shift @$ref;
 950                                                         my $dxchan = DXChannel->get($r->{call});
 951                                                         next unless $dxchan;
 952                                                         my $t = tv_interval($r->{t}, [ gettimeofday ]);
 953                                                         if ($dxchan->is_user) {
 954                                                                 my $s = sprintf "%.2f", $t;
 955                                                                 my $ave = sprintf "%.2f", $tochan ? ($tochan->{pingave} || $t) : $t;
 956                                                                 $dxchan->send($dxchan->msg('pingi', $field[2], $s, $ave))
 957                                                         } elsif ($dxchan->is_node) {
 958                                                                 if ($tochan) {
 959                                                                         $tochan->{nopings} = 2; # pump up the timer
 960                                                                         push @{$tochan->{pingtime}}, $t;
 961                                                                         shift @{$tochan->{pingtime}} if @{$tochan->{pingtime}} > 6;
 962                                                                         my $st;
 963                                                                         for (@{$tochan->{pingtime}}) {
 964                                                                                 $st += $_;
 965                                                                         }
 966                                                                         $tochan->{pingave} = $st / @{$tochan->{pingtime}};
 967                                                                 }
 968                                                         }
 969                                                 }
 970                                         }
 971                                 }
 972                         } else {
 973                                 # route down an appropriate thingy
 974                                 $self->route($field[1], $line);
 975                         }
 976                         return;
 977                 }
 978
 979                 if ($pcno == 75) {              # dunno but route it
 980                         if ($field[1] ne $main::mycall) {
 981                                 $self->route($field[1], $line);
 982                         }
 983                         return;
 984                 }
 985
 986                 if ($pcno == 73) {  # WCY broadcasts
 987
 988                         # do some de-duping
 989                         my $d = cltounix($field[1], sprintf("%02d18Z", $field[2]));
 990                         if (($pcno == 23 && $d < $main::systime - $pc23_max_age) || $d > $main::systime + 1500 || $field[2] < 0 || $field[2] > 23) {
 991                                 dbg('chan', "PCPROT: WCY Date ($field[1] $field[2]) out of range");
 992                                 return;
 993                         }
 994                         @field = map { unpad($_) } @field;
 995                         if (WCY::dup($d,@field[3..7])) {
 996                                 dbg('chan', "PCPROT: Dup WCY Spot ignored\n");
 997                                 return;
 998                         }
 999
1000                         my $wcy = WCY::update($d, @field[2..12]);
1001
1002                         my $rep;
1003                         eval {
1004                                 $rep = Local::wwv($self, @field[1..12]);
1005                         };
1006                         # dbg('local', "Local::wcy error $@") if $@;
1007                         return if $rep;
1008
1009                         # broadcast to the eager world
1010                         send_wcy_spot($self, $line, $d, @field[2..12]);
1011                         return;
1012                 }
1013
1014                 if ($pcno == 84) { # remote commands (incoming)
1015                         if ($field[1] eq $main::mycall) {
1016                                 my $ref = DXUser->get_current($field[2]);
1017                                 my $cref = DXCluster->get($field[2]);
1018                                 Log('rcmd', 'in', $ref->{priv}, $field[2], $field[4]);
1019                                 unless ($field[4] =~ /rcmd/i || !$cref || !$ref || $cref->mynode->call ne $ref->homenode) {    # not allowed to relay RCMDS!
1020                                         if ($ref->{priv}) {     # you have to have SOME privilege, the commands have further filtering
1021                                                 $self->{remotecmd} = 1; # for the benefit of any command that needs to know
1022                                                 my $oldpriv = $self->{priv};
1023                                                 $self->{priv} = $ref->{priv};     # assume the user's privilege level
1024                                                 my @in = (DXCommandmode::run_cmd($self, $field[4]));
1025                                                 $self->{priv} = $oldpriv;
1026                                                 for (@in) {
1027                                                         s/\s*$//og;
1028                                                         $self->send(pc85($main::mycall, $field[2], $field[3], "$main::mycall:$_"));
1029                                                         Log('rcmd', 'out', $field[2], $_);
1030                                                 }
1031                                                 delete $self->{remotecmd};
1032                                         } else {
1033                                                 $self->send(pc85($main::mycall, $field[2], $field[3], "$main::mycall:sorry...!"));
1034                                         }
1035                                 } else {
1036                                         $self->send(pc85($main::mycall, $field[2], $field[3],"$main::mycall:your attempt is logged, Tut tut tut...!"));
1037                                 }
1038                         } else {
1039                                 my $ref = DXUser->get_current($field[1]);
1040                                 if ($ref && $ref->is_clx) {
1041                                         $self->route($field[1], $line);
1042                                 } else {
1043                                         route($field[1], pc34($field[2], $field[1], $field[4]));
1044                                 }
1045                         }
1046                         return;
1047                 }
1048
1049                 if ($pcno == 85) {              # remote command replies
1050                         if ($field[1] eq $main::mycall) {
1051                                 my $dxchan = DXChannel->get($field[3]);
1052                                 if ($dxchan) {
1053                                         $dxchan->send($field[4]);
1054                                 } else {
1055                                         my $s = $rcmds{$field[2]};
1056                                         if ($s) {
1057                                                 $dxchan = DXChannel->get($s->{call});
1058                                                 $dxchan->send($field[4]) if $dxchan;
1059                                                 delete $rcmds{$field[2]} if !$dxchan;
1060                                         } else {
1061                                                 # send unsolicited ones to the sysop
1062                                                 my $dxchan = DXChannel->get($main::myalias);
1063                                                 $dxchan->send($field[4]) if $dxchan;
1064                                         }
1065                                 }
1066                         } else {
1067                                 my $ref = DXUser->get_current($field[1]);
1068                                 if ($ref && $ref->is_clx) {
1069                                         $self->route($field[1], $line);
1070                                 } else {
1071                                         route($field[1], pc35($field[2], $field[1], $field[4]));
1072                                 }
1073                         }
1074                         return;
1075                 }
1076         }
1077
1078         # if get here then rebroadcast the thing with its Hop count decremented (if
1079         # there is one). If it has a hop count and it decrements to zero then don't
1080         # rebroadcast it.
1081         #
1082         # NOTE - don't arrive here UNLESS YOU WANT this lump of protocol to be
1083         #        REBROADCAST!!!!
1084         #
1085
1086         unless ($self->{isolate}) {
1087                 broadcast_ak1a($line, $self); # send it to everyone but me
1088         }
1089 }
1090
1091 #
1092 # This is called from inside the main cluster processing loop and is used
1093 # for despatching commands that are doing some long processing job
1094 #
1095 sub process
1096 {
1097         my $t = time;
1098         my @dxchan = DXChannel->get_all();
1099         my $dxchan;
1100
1101         foreach $dxchan (@dxchan) {
1102                 next unless $dxchan->is_node();
1103                 next if $dxchan == $me;
1104
1105                 # send a pc50 out on this channel
1106                 if ($t >= $dxchan->pc50_t + $DXProt::pc50_interval) {
1107                         $dxchan->send(pc50(scalar DXChannel::get_all_users));
1108                         $dxchan->pc50_t($t);
1109                 }
1110
1111                 # send a ping out on this channel
1112                 if ($dxchan->{pingint} && $t >= $dxchan->{pingint} + $dxchan->{lastping}) {
1113                         if ($dxchan->{nopings} <= 0) {
1114                                 $dxchan->disconnect;
1115                         } else {
1116                                 addping($main::mycall, $dxchan->call);
1117                                 $dxchan->{nopings} -= 1;
1118                                 $dxchan->{lastping} = $t;
1119                         }
1120                 }
1121         }
1122
1123         my $key;
1124         my $val;
1125         my $cutoff;
1126         if ($main::systime - 3600 > $last_hour) {
1127 #               Spot::process;
1128 #               Geomag::process;
1129 #               AnnTalk::process;
1130                 $last_hour = $main::systime;
1131         }
1132 }
1133
1134 #
1135 # finish up a pc context
1136 #
1137 sub finish
1138 {
1139         my $self = shift;
1140         my $call = $self->call;
1141         my $conn = shift;
1142         my $ref = DXCluster->get_exact($call);
1143
1144         # unbusy and stop and outgoing mail
1145         my $mref = DXMsg::get_busy($call);
1146         $mref->stop_msg($call) if $mref;
1147
1148         # broadcast to all other nodes that all the nodes connected to via me are gone
1149         my @gonenodes = map { $_->dxchan == $self ? $_ : () } DXNode::get_all();
1150         my $node;
1151
1152         foreach $node (@gonenodes) {
1153                 next if $node->call eq $call;
1154                 broadcast_ak1a(pc21($node->call, 'Gone') , $self) unless $self->{isolate};
1155                 $node->del();
1156         }
1157
1158         # remove outstanding pings
1159         delete $pings{$call};
1160
1161         # now broadcast to all other ak1a nodes that I have gone
1162         broadcast_ak1a(pc21($call, 'Gone.'), $self) unless $self->{isolate};
1163
1164         # I was the last node visited
1165     $self->user->node($main::mycall);
1166
1167         # send info to all logged in thingies
1168         $self->tell_login('logoutn');
1169
1170         Log('DXProt', $call . " Disconnected");
1171         $ref->del() if $ref;
1172 }
1173
1174 #
1175 # some active measures
1176 #
1177 sub send_dx_spot
1178 {
1179         my $self = shift;
1180         my $line = shift;
1181         my @dxchan = DXChannel->get_all();
1182         my $dxchan;
1183
1184         # send it if it isn't the except list and isn't isolated and still has a hop count
1185         # taking into account filtering and so on
1186         foreach $dxchan (@dxchan) {
1187                 my $routeit;
1188                 my ($filter, $hops);
1189
1190                 if ($dxchan->{spotsfilter}) {
1191                     ($filter, $hops) = $dxchan->{spotsfilter}->it(@_, $self->{call} );
1192                         next unless $filter;
1193                 }
1194
1195                 if ($dxchan->is_node) {
1196                         next if $dxchan == $self;
1197                         if ($hops) {
1198                                 $routeit = $line;
1199                                 $routeit =~ s/\^H\d+\^\~$/\^H$hops\^\~/;
1200                         } else {
1201                                 $routeit = adjust_hops($dxchan, $line);  # adjust its hop count by node name
1202                                 next unless $routeit;
1203                         }
1204                         if ($filter) {
1205                                 $dxchan->send($routeit) if $routeit;
1206                         } else {
1207                                 $dxchan->send($routeit) unless $dxchan->{isolate} || $self->{isolate};
1208                         }
1209                 } elsif ($dxchan->is_user && $dxchan->{dx}) {
1210                         my $buf = Spot::formatb($dxchan->{user}->wantgrid, $_[0], $_[1], $_[2], $_[3], $_[4]);
1211                         $buf .= "\a\a" if $dxchan->{beep};
1212                         $buf =~ s/\%5E/^/g;
1213                         if ($dxchan->{state} eq 'prompt' || $dxchan->{state} eq 'talk') {
1214                                 $dxchan->send($buf);
1215                         } else {
1216                                 $dxchan->delay($buf);
1217                         }
1218                 }
1219         }
1220 }
1221
1222 sub send_wwv_spot
1223 {
1224         my $self = shift;
1225         my $line = shift;
1226         my @dxchan = DXChannel->get_all();
1227         my $dxchan;
1228
1229         # send it if it isn't the except list and isn't isolated and still has a hop count
1230         # taking into account filtering and so on
1231         foreach $dxchan (@dxchan) {
1232                 my $routeit;
1233                 my ($filter, $hops);
1234
1235                 if ($dxchan->{wwvfilter}) {
1236                          ($filter, $hops) = $dxchan->{wwvfilter}->it(@_, $self->{call} );
1237                          next unless $filter;
1238                 }
1239                 if ($dxchan->is_node) {
1240                         next if $dxchan == $self;
1241                         if ($hops) {
1242                                 $routeit = $line;
1243                                 $routeit =~ s/\^H\d+\^\~$/\^H$hops\^\~/;
1244                         } else {
1245                                 $routeit = adjust_hops($dxchan, $line);  # adjust its hop count by node name
1246                                 next unless $routeit;
1247                         }
1248                         if ($filter) {
1249                                 $dxchan->send($routeit) if $routeit;
1250                         } else {
1251                                 $dxchan->send($routeit) unless $dxchan->{isolate} || $self->{isolate};
1252
1253                         }
1254                 } elsif ($dxchan->is_user && $dxchan->{wwv}) {
1255                         my $buf = "WWV de $_[6] <$_[1]>:   SFI=$_[2], A=$_[3], K=$_[4], $_[5]";
1256                         $buf .= "\a\a" if $dxchan->{beep};
1257                         if ($dxchan->{state} eq 'prompt' || $dxchan->{state} eq 'talk') {
1258                                 $dxchan->send($buf);
1259                         } else {
1260                                 $dxchan->delay($buf);
1261                         }
1262                 }
1263         }
1264 }
1265
1266 sub send_wcy_spot
1267 {
1268         my $self = shift;
1269         my $line = shift;
1270         my @dxchan = DXChannel->get_all();
1271         my $dxchan;
1272
1273         # send it if it isn't the except list and isn't isolated and still has a hop count
1274         # taking into account filtering and so on
1275         foreach $dxchan (@dxchan) {
1276                 my $routeit;
1277                 my ($filter, $hops);
1278
1279                 if ($dxchan->{wcyfilter}) {
1280                          ($filter, $hops) = $dxchan->{wcyfilter}->it(@_, $self->{call} );
1281                          next unless $filter;
1282                 }
1283                 if ($dxchan->is_clx || $dxchan->is_spider || $dxchan->is_dxnet) {
1284                         next if $dxchan == $self;
1285                         if ($hops) {
1286                                 $routeit = $line;
1287                                 $routeit =~ s/\^H\d+\^\~$/\^H$hops\^\~/;
1288                         } else {
1289                                 $routeit = adjust_hops($dxchan, $line);  # adjust its hop count by node name
1290                                 next unless $routeit;
1291                         }
1292                         if ($filter) {
1293                                 $dxchan->send($routeit) if $routeit;
1294                         } else {
1295                                 $dxchan->send($routeit) unless $dxchan->{isolate} || $self->{isolate};
1296                         }
1297                 } elsif ($dxchan->is_user && $dxchan->{wcy}) {
1298                         my $buf = "WCY de $_[10] <$_[1]> : K=$_[4] expK=$_[5] A=$_[3] R=$_[6] SFI=$_[2] SA=$_[7] GMF=$_[8] Au=$_[9]";
1299                         $buf .= "\a\a" if $dxchan->{beep};
1300                         if ($dxchan->{state} eq 'prompt' || $dxchan->{state} eq 'talk') {
1301                                 $dxchan->send($buf);
1302                         } else {
1303                                 $dxchan->delay($buf);
1304                         }
1305                 }
1306         }
1307 }
1308
1309 # send an announce
1310 sub send_announce
1311 {
1312         my $self = shift;
1313         my $line = shift;
1314         my @dxchan = DXChannel->get_all();
1315         my $dxchan;
1316         my $text = unpad($_[2]);
1317         my $target;
1318         my $to = 'To ';
1319
1320         if ($_[3] eq '*') {     # sysops
1321                 $target = "SYSOP";
1322         } elsif ($_[3] gt ' ') { # speciality list handling
1323                 my ($name) = split /\./, $_[3];
1324                 $target = "$name"; # put the rest in later (if bothered)
1325         }
1326
1327         if ($_[5] eq '1') {
1328                 $target = "WX";
1329                 $to = '';
1330         }
1331         $target = "ALL" if !$target;
1332
1333         Log('ann', $target, $_[0], $text);
1334
1335         # send it if it isn't the except list and isn't isolated and still has a hop count
1336         # taking into account filtering and so on
1337         foreach $dxchan (@dxchan) {
1338                 my $routeit;
1339                 my ($filter, $hops);
1340
1341                 if ($dxchan->{annfilter}) {
1342                         my ($ann_dxcc, $ann_itu, $ann_cq, $org_dxcc, $org_itu, $org_cq) = (0..0);
1343                         my @dxcc = Prefix::extract($_[0]);
1344                         if (@dxcc > 0) {
1345                                 $ann_dxcc = $dxcc[1]->dxcc;
1346                                 $ann_itu = $dxcc[1]->itu;
1347                                 $ann_cq = $dxcc[1]->cq;
1348                         }
1349                         @dxcc = Prefix::extract($_[4]);
1350                         if (@dxcc > 0) {
1351                                 $org_dxcc = $dxcc[1]->dxcc;
1352                                 $org_itu = $dxcc[1]->itu;
1353                                 $org_cq = $dxcc[1]->cq;
1354                         }
1355                         ($filter, $hops) = $dxchan->{annfilter}->it(@_, $self->{call}, $ann_dxcc, $ann_itu, $ann_cq, $org_dxcc, $org_itu, $org_cq);
1356                         next unless $filter;
1357                 }
1358                 if ($dxchan->is_node && $_[1] ne $main::mycall) {  # i.e not specifically routed to me
1359                         next if $dxchan == $self;
1360                         if ($hops) {
1361                                 $routeit = $line;
1362                                 $routeit =~ s/\^H\d+\^\~$/\^H$hops\^\~/;
1363                         } else {
1364                                 $routeit = adjust_hops($dxchan, $line);  # adjust its hop count by node name
1365                                 next unless $routeit;
1366                         }
1367                         if ($filter) {
1368                                 $dxchan->send($routeit) if $routeit;
1369                         } else {
1370                                 $dxchan->send($routeit) unless $dxchan->{isolate} || $self->{isolate};
1371
1372                         }
1373                 } elsif ($dxchan->is_user) {
1374                         unless ($dxchan->{ann}) {
1375                                 next if $_[0] ne $main::myalias && $_[0] ne $main::mycall;
1376                         }
1377                         next if $target eq 'SYSOP' && $dxchan->{priv} < 5;
1378                         my $buf = "$to$target de $_[0]: $text";
1379                         $buf =~ s/\%5E/^/g;
1380                         $buf .= "\a\a" if $dxchan->{beep};
1381                         if ($dxchan->{state} eq 'prompt' || $dxchan->{state} eq 'talk') {
1382                                 $dxchan->send($buf);
1383                         } else {
1384                                 $dxchan->delay($buf);
1385                         }
1386                 }
1387         }
1388 }
1389
1390 sub send_local_config
1391 {
1392         my $self = shift;
1393         my $n;
1394         my @nodes;
1395         my @localnodes;
1396         my @remotenodes;
1397
1398         # send our nodes
1399         if ($self->{isolate}) {
1400                 @localnodes = (DXCluster->get_exact($main::mycall));
1401         } else {
1402                 # create a list of all the nodes that are not connected to this connection
1403                 # and are not themselves isolated, this to make sure that isolated nodes
1404         # don't appear outside of this node
1405                 @nodes = DXNode::get_all();
1406                 @nodes = grep { $_->{call} ne $main::mycall } @nodes;
1407                 @nodes = grep { $_->dxchan != $self } @nodes if @nodes;
1408                 @nodes = grep { !$_->dxchan->{isolate} } @nodes if @nodes;
1409                 @localnodes = grep { $_->dxchan->{call} eq $_->{call} } @nodes if @nodes;
1410                 unshift @localnodes, DXCluster->get_exact($main::mycall);
1411                 @remotenodes = grep { $_->dxchan->{call} ne $_->{call} } @nodes if @nodes;
1412         }
1413
1414         my @s = $me->pc19(@localnodes, @remotenodes);
1415         for (@s) {
1416                 my $routeit = adjust_hops($self, $_);
1417                 $self->send($routeit) if $routeit;
1418         }
1419
1420         # get all the users connected on the above nodes and send them out
1421         foreach $n (@localnodes, @remotenodes) {
1422                 my @users = values %{$n->list};
1423                 my @s = pc16($n, @users);
1424                 for (@s) {
1425                         my $routeit = adjust_hops($self, $_);
1426                         $self->send($routeit) if $routeit;
1427                 }
1428         }
1429 }
1430
1431 #
1432 # route a message down an appropriate interface for a callsign
1433 #
1434 # is called route(to, pcline);
1435 #
1436 sub route
1437 {
1438         my ($self, $call, $line) = @_;
1439
1440         if (ref $self && $call eq $self->{call}) {
1441                 dbg('chan', "PCPROT: Trying to route back to source, dropped");
1442                 return;
1443         }
1444
1445         # always send it down the local interface if available
1446         my $dxchan = DXChannel->get($call);
1447         unless ($dxchan) {
1448                 my $cl = DXCluster->get_exact($call);
1449                 $dxchan = $cl->dxchan if $cl;
1450         }
1451         if ($dxchan) {
1452                 my $routeit = adjust_hops($dxchan, $line);   # adjust its hop count by node name
1453                 if ($routeit) {
1454                         $dxchan->send($routeit);
1455                 }
1456         }
1457 }
1458
1459 # broadcast a message to all clusters taking into account isolation
1460 # [except those mentioned after buffer]
1461 sub broadcast_ak1a
1462 {
1463         my $s = shift;                          # the line to be rebroadcast
1464         my @except = @_;                        # to all channels EXCEPT these (dxchannel refs)
1465         my @dxchan = DXChannel::get_all_nodes();
1466         my $dxchan;
1467
1468         # send it if it isn't the except list and isn't isolated and still has a hop count
1469         foreach $dxchan (@dxchan) {
1470                 next if grep $dxchan == $_, @except;
1471                 my $routeit = adjust_hops($dxchan, $s);      # adjust its hop count by node name
1472                 $dxchan->send($routeit) unless $dxchan->{isolate} || !$routeit;
1473         }
1474 }
1475
1476 # broadcast a message to all clusters ignoring isolation
1477 # [except those mentioned after buffer]
1478 sub broadcast_all_ak1a
1479 {
1480         my $s = shift;                          # the line to be rebroadcast
1481         my @except = @_;                        # to all channels EXCEPT these (dxchannel refs)
1482         my @dxchan = DXChannel::get_all_nodes();
1483         my $dxchan;
1484
1485         # send it if it isn't the except list and isn't isolated and still has a hop count
1486         foreach $dxchan (@dxchan) {
1487                 next if grep $dxchan == $_, @except;
1488                 my $routeit = adjust_hops($dxchan, $s);      # adjust its hop count by node name
1489                 $dxchan->send($routeit);
1490         }
1491 }
1492
1493 # broadcast to all users
1494 # storing the spot or whatever until it is in a state to receive it
1495 sub broadcast_users
1496 {
1497         my $s = shift;                          # the line to be rebroadcast
1498         my $sort = shift;           # the type of transmission
1499         my $fref = shift;           # a reference to an object to filter on
1500         my @except = @_;                        # to all channels EXCEPT these (dxchannel refs)
1501         my @dxchan = DXChannel::get_all_users();
1502         my $dxchan;
1503         my @out;
1504
1505         foreach $dxchan (@dxchan) {
1506                 next if grep $dxchan == $_, @except;
1507                 push @out, $dxchan;
1508         }
1509         broadcast_list($s, $sort, $fref, @out);
1510 }
1511
1512 # broadcast to a list of users
1513 sub broadcast_list
1514 {
1515         my $s = shift;
1516         my $sort = shift;
1517         my $fref = shift;
1518         my $dxchan;
1519
1520         foreach $dxchan (@_) {
1521                 my $filter = 1;
1522
1523                 if ($sort eq 'dx') {
1524                     next unless $dxchan->{dx};
1525                         ($filter) = $dxchan->{spotsfilter}->it(@{$fref}) if ref $fref;
1526                         next unless $filter;
1527                 }
1528                 next if $sort eq 'ann' && !$dxchan->{ann};
1529                 next if $sort eq 'wwv' && !$dxchan->{wwv};
1530                 next if $sort eq 'wcy' && !$dxchan->{wcy};
1531                 next if $sort eq 'wx' && !$dxchan->{wx};
1532
1533                 $s =~ s/\a//og unless $dxchan->{beep};
1534
1535                 if ($dxchan->{state} eq 'prompt' || $dxchan->{state} eq 'talk') {
1536                         $dxchan->send($s);
1537                 } else {
1538                         $dxchan->delay($s);
1539                 }
1540         }
1541 }
1542
1543
1544 #
1545 # obtain the hops from the list for this callsign and pc no
1546 #
1547
1548 sub get_hops
1549 {
1550         my $pcno = shift;
1551         my $hops = $DXProt::hopcount{$pcno};
1552         $hops = $DXProt::def_hopcount if !$hops;
1553         return "H$hops";
1554 }
1555
1556 #
1557 # adjust the hop count on a per node basis using the user loadable
1558 # hop table if available or else decrement an existing one
1559 #
1560
1561 sub adjust_hops
1562 {
1563         my $self = shift;
1564         my $s = shift;
1565         my $call = $self->{call};
1566         my $hops;
1567
1568         if (($hops) = $s =~ /\^H(\d+)\^~?$/o) {
1569                 my ($pcno) = $s =~ /^PC(\d\d)/o;
1570                 confess "$call called adjust_hops with '$s'" unless $pcno;
1571                 my $ref = $nodehops{$call} if %nodehops;
1572                 if ($ref) {
1573                         my $newhops = $ref->{$pcno};
1574                         return "" if defined $newhops && $newhops == 0;
1575                         $newhops = $ref->{default} unless $newhops;
1576                         return "" if defined $newhops && $newhops == 0;
1577                         $newhops = $hops if !$newhops;
1578                         $s =~ s/\^H(\d+)(\^~?)$/\^H$newhops$2/ if $newhops;
1579                 } else {
1580                         # simply decrement it
1581                         $hops--;
1582                         return "" if !$hops;
1583                         $s =~ s/\^H(\d+)(\^~?)$/\^H$hops$2/ if $hops;
1584                 }
1585         }
1586         return $s;
1587 }
1588
1589 #
1590 # load hop tables
1591 #
1592 sub load_hops
1593 {
1594         my $self = shift;
1595         return $self->msg('lh1') unless -e "$main::data/hop_table.pl";
1596         do "$main::data/hop_table.pl";
1597         return $@ if $@;
1598         return 0;
1599 }
1600
1601
1602 # add a ping request to the ping queues
1603 sub addping
1604 {
1605         my ($from, $to) = @_;
1606         my $ref = $pings{$to} || [];
1607         my $r = {};
1608         $r->{call} = $from;
1609         $r->{t} = [ gettimeofday ];
1610         route(undef, $to, pc51($to, $main::mycall, 1));
1611         push @$ref, $r;
1612         $pings{$to} = $ref;
1613 }
1614
1615 # add a rcmd request to the rcmd queues
1616 sub addrcmd
1617 {
1618         my ($self, $to, $cmd) = @_;
1619
1620         my $r = {};
1621         $r->{call} = $self->{call};
1622         $r->{t} = $main::systime;
1623         $r->{cmd} = $cmd;
1624         $rcmds{$to} = $r;
1625
1626         my $ref = DXCluster->get_exact($to);
1627     if ($ref && $ref->dxchan && $ref->dxchan->is_clx) {
1628                 route(undef, $to, pc84($main::mycall, $to, $self->{call}, $cmd));
1629         } else {
1630                 route(undef, $to, pc34($main::mycall, $to, $cmd));
1631         }
1632 }
1633
1634 sub disconnect
1635 {
1636         my $self = shift;
1637         my $nopc39 = shift;
1638
1639         if ($self->{conn} && !$nopc39) {
1640                 $self->send_now("D", DXProt::pc39($main::mycall, $self->msg('disc1', "System Op")));
1641         }
1642
1643         $self->SUPER::disconnect;
1644 }
1645
1646
1647 #
1648 # send a talk message to this thingy
1649 #
1650 sub talk
1651 {
1652         my ($self, $from, $to, $via, $line) = @_;
1653
1654         $line =~ s/\^/\\5E/g;                   # remove any ^ characters
1655         $self->send(DXProt::pc10($from, $to, $via, $line));
1656         Log('talk', $self->call, $from, $via?$via:$main::mycall, $line);
1657 }
1658 1;
1659 __END__