perl/DXProt.pm

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