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
  36 use strict;
  37 use vars qw($me $pc11_max_age $pc23_max_age
  38                         $last_hour $last10 %eph  %pings %rcmds
  39                         %nodehops $baddx $badspotter $badnode $censorpc
  40                         $allowzero $decode_dk0wcy $send_opernam @checklist);
  41
  42 $me = undef;                                    # the channel id for this cluster
  43 $pc11_max_age = 1*3600;                 # the maximum age for an incoming 'real-time' pc11
  44 $pc23_max_age = 1*3600;                 # the maximum age for an incoming 'real-time' pc23
  45
  46 $last_hour = time;                              # last time I did an hourly periodic update
  47 %pings = ();                    # outstanding ping requests outbound
  48 %rcmds = ();                    # outstanding rcmd requests outbound
  49 %nodehops = ();                 # node specific hop control
  50 $censorpc = 1;                                  # Do a BadWords::check on text fields and reject things
  51                                                                 # loads of 'bad things'
  52 $baddx = new DXHash "baddx";
  53 $badspotter = new DXHash "badspotter";
  54 $badnode = new DXHash "badnode";
  55 $last10 = time;
  56
  57 @checklist =
  58 (
  59  [ qw(c c m bp bc c) ],                 # pc10
  60  [ qw(f m d t m c c h) ],               # pc11
  61  [ qw(c bc m bp bm p h) ],              # pc12
  62  [ qw(c h) ],                                   #
  63  [ qw(c h) ],                                   #
  64  [ qw(c m h) ],                                 #
  65  undef ,                                                # pc16 has to be validated manually
  66  [ qw(c c h) ],                                 # pc17
  67  [ qw(m n) ],                                   # pc18
  68  undef ,                                                # pc19 has to be validated manually
  69  undef ,                                                # pc20 no validation
  70  [ qw(c m h) ],                                 # pc21
  71  undef ,                                                # pc22 no validation
  72  [ qw(d n n n n m c c h) ],             # pc23
  73  [ qw(c p h) ],                                 # pc24
  74  [ qw(c c n n) ],                               # pc25
  75  [ qw(f m d t m c c bc) ],              # pc26
  76  [ qw(d n n n n m c c bc) ],    # pc27
  77  [ qw(c c m c d t p m bp n p bp bc) ], # pc28
  78  [ qw(c c n m) ],                               # pc29
  79  [ qw(c c n) ],                                 # pc30
  80  [ qw(c c n) ],                                 # pc31
  81  [ qw(c c n) ],                                 # pc32
  82  [ qw(c c n) ],                                 # pc33
  83  [ qw(c c m) ],                                 # pc34
  84  [ qw(c c m) ],                                 # pc35
  85  [ qw(c c m) ],                                 # pc36
  86  [ qw(c c n m) ],                               # pc37
  87  undef,                                                 # pc38 not interested
  88  [ qw(c m) ],                                   # pc39
  89  [ qw(c c m p n) ],                             # pc40
  90  [ qw(c n m h) ],                               # pc41
  91  [ qw(c c n) ],                                 # pc42
  92  undef,                                                 # pc43 don't handle it
  93  [ qw(c c n m m c) ],                   # pc44
  94  [ qw(c c n m) ],                               # pc45
  95  [ qw(c c n) ],                                 # pc46
  96  undef,                                                 # pc47
  97  undef,                                                 # pc48
  98  [ qw(c m h) ],                                 # pc49
  99  [ qw(c n h) ],                                 # pc50
 100  [ qw(c c n) ],                                 # pc51
 101  undef,
 102  undef,
 103  undef,
 104  undef,
 105  undef,
 106  undef,
 107  undef,
 108  undef,
 109  undef,                                                 # pc60
 110  undef,
 111  undef,
 112  undef,
 113  undef,
 114  undef,
 115  undef,
 116  undef,
 117  undef,
 118  undef,
 119  undef,                                                 # pc70
 120  undef,
 121  undef,
 122  [ qw(d n n n n n n m m m c c h) ],     # pc73
 123  undef,
 124  undef,
 125  undef,
 126  undef,
 127  undef,
 128  undef,
 129  undef,                                                 # pc80
 130  undef,
 131  undef,
 132  undef,
 133  [ qw(c c c m) ],                               # pc84
 134  [ qw(c c c m) ],                               # pc85
 135 );
 136
 137 # use the entry in the check list to check the field list presented
 138 # return OK if line NOT in check list (for now)
 139 sub check
 140 {
 141         my $n = shift;
 142         $n -= 10;
 143         return 0 if $n < 0 || $n > @checklist;
 144         my $ref = $checklist[$n];
 145         return 0 unless ref $ref;
 146
 147         my $i;
 148         shift;    # not interested in the first field
 149         for ($i = 0; $i < @$ref; $i++) {
 150                 my ($blank, $act) = $$ref[$i] =~ /^(b?)(\w)$/;
 151                 return 0 unless $act;
 152                 next if $blank && $_[$i] =~ /^[ \*]$/;
 153                 if ($act eq 'c') {
 154                         return $i+1 unless is_callsign($_[$i]);
 155                 } elsif ($act eq 'm') {
 156                         return $i+1 unless is_pctext($_[$i]);
 157                 } elsif ($act eq 'p') {
 158                         return $i+1 unless is_pcflag($_[$i]);
 159                 } elsif ($act eq 'f') {
 160                         return $i+1 unless is_freq($_[$i]);
 161                 } elsif ($act eq 'n') {
 162                         return $i+1 unless $_[$i] =~ /^[\d ]+$/;
 163                 } elsif ($act eq 'h') {
 164                         return $i+1 unless $_[$i] =~ /^H\d\d?$/;
 165                 } elsif ($act eq 'd') {
 166                         return $i+1 unless $_[$i] =~ /^\s*\d+-\w\w\w-[12][90]\d\d$/;
 167                 } elsif ($act eq 't') {
 168                         return $i+1 unless $_[$i] =~ /^[012]\d[012345]\dZ$/;
 169                 }
 170         }
 171         return 0;
 172 }
 173
 174 sub init
 175 {
 176         my $user = DXUser->get($main::mycall);
 177         $DXProt::myprot_version += $main::version*100;
 178         $me = DXProt->new($main::mycall, 0, $user);
 179         $me->{here} = 1;
 180         $me->{state} = "indifferent";
 181         do "$main::data/hop_table.pl" if -e "$main::data/hop_table.pl";
 182         confess $@ if $@;
 183         $me->{sort} = 'S';    # S for spider
 184         $me->{priv} = 9;
 185 #       $Route::Node::me->adddxchan($me);
 186 }
 187
 188 #
 189 # obtain a new connection this is derived from dxchannel
 190 #
 191
 192 sub new
 193 {
 194         my $self = DXChannel::alloc(@_);
 195
 196         # add this node to the table, the values get filled in later
 197         my $pkg = shift;
 198         my $call = shift;
 199         $main::routeroot->add($call, '0000', Route::here(1)) if $call ne $main::mycall;
 200
 201         return $self;
 202 }
 203
 204 # this is how a pc connection starts (for an incoming connection)
 205 # issue a PC38 followed by a PC18, then wait for a PC20 (remembering
 206 # all the crap that comes between).
 207 sub start
 208 {
 209         my ($self, $line, $sort) = @_;
 210         my $call = $self->{call};
 211         my $user = $self->{user};
 212
 213         # remember type of connection
 214         $self->{consort} = $line;
 215         $self->{outbound} = $sort eq 'O';
 216         $self->{priv} = $user->priv || 1;     # other clusters can always be 'normal' users
 217         $self->{lang} = $user->lang || 'en';
 218         $self->{isolate} = $user->{isolate};
 219         $self->{consort} = $line;       # save the connection type
 220         $self->{here} = 1;
 221
 222         # get the output filters
 223         $self->{spotsfilter} = Filter::read_in('spots', $call, 0) || Filter::read_in('spots', 'node_default', 0);
 224         $self->{wwvfilter} = Filter::read_in('wwv', $call, 0) || Filter::read_in('wwv', 'node_default', 0);
 225         $self->{wcyfilter} = Filter::read_in('wcy', $call, 0) || Filter::read_in('wcy', 'node_default', 0);
 226         $self->{annfilter} = Filter::read_in('ann', $call, 0) || Filter::read_in('ann', 'node_default', 0) ;
 227         $self->{routefilter} = Filter::read_in('route', $call, 0) || Filter::read_in('route', 'node_default', 0) ;
 228
 229
 230         # get the INPUT filters (these only pertain to Clusters)
 231         $self->{inspotsfilter} = Filter::read_in('spots', $call, 1) || Filter::read_in('spots', 'node_default', 1);
 232         $self->{inwwvfilter} = Filter::read_in('wwv', $call, 1) || Filter::read_in('wwv', 'node_default', 1);
 233         $self->{inwcyfilter} = Filter::read_in('wcy', $call, 1) || Filter::read_in('wcy', 'node_default', 1);
 234         $self->{inannfilter} = Filter::read_in('ann', $call, 1) || Filter::read_in('ann', 'node_default', 1);
 235         $self->{inroutefilter} = Filter::read_in('route', $call, 1) || Filter::read_in('route', 'node_default', 1);
 236
 237         # set unbuffered and no echo
 238         $self->send_now('B',"0");
 239         $self->send_now('E',"0");
 240
 241         # ping neighbour node stuff
 242         my $ping = $user->pingint;
 243         $ping = 5*60 unless defined $ping;
 244         $self->{pingint} = $ping;
 245         $self->{nopings} = $user->nopings || 2;
 246         $self->{pingtime} = [ ];
 247         $self->{pingave} = 0;
 248
 249         # send initialisation string
 250         unless ($self->{outbound}) {
 251                 $self->send(pc18());
 252                 $self->{lastping} = $main::systime;
 253         } else {
 254                 $self->{lastping} = $main::systime + ($self->pingint / 2);
 255         }
 256         $self->state('init');
 257         $self->{pc50_t} = $main::systime;
 258
 259         # send info to all logged in thingies
 260         $self->tell_login('loginn');
 261
 262         Log('DXProt', "$call connected");
 263 }
 264
 265 #
 266 # This is the normal pcxx despatcher
 267 #
 268 sub normal
 269 {
 270         my ($self, $line) = @_;
 271         my @field = split /\^/, $line;
 272         return unless @field;
 273
 274         pop @field if $field[-1] eq '~';
 275
 276 #       print join(',', @field), "\n";
 277
 278
 279         # process PC frames, this will fail unless the frame starts PCnn
 280         my ($pcno) = $field[0] =~ /^PC(\d\d)/; # just get the number
 281         return unless $pcno;
 282         return if $pcno < 10 || $pcno > 99;
 283
 284         # check for and dump bad protocol messages
 285         my $n = check($pcno, @field);
 286         if ($n) {
 287                 dbg("PCPROT: bad field $n, dumped (" . parray($checklist[$pcno-10]) . ")") if isdbg('chanerr');
 288                 return;
 289         }
 290
 291         # local processing 1
 292         my $pcr;
 293         eval {
 294                 $pcr = Local::pcprot($self, $pcno, @field);
 295         };
 296 #       dbg("Local::pcprot error $@") if isdbg('local') if $@;
 297         return if $pcr;
 298
 299  SWITCH: {
 300                 if ($pcno == 10) {              # incoming talk
 301
 302                         # will we allow it at all?
 303                         if ($censorpc) {
 304                                 my @bad;
 305                                 if (@bad = BadWords::check($field[3])) {
 306                                         dbg("PCPROT: Bad words: @bad, dropped") if isdbg('chanerr');
 307                                         return;
 308                                 }
 309                         }
 310
 311                         # is it for me or one of mine?
 312                         my ($to, $via, $call, $dxchan);
 313                         if ($field[5] gt ' ') {
 314                                 $call = $via = $field[2];
 315                                 $to = $field[5];
 316                         } else {
 317                                 $call = $to = $field[2];
 318                         }
 319                         $dxchan = DXChannel->get($main::myalias) if $call eq $main::mycall;
 320                         $dxchan = DXChannel->get($call) unless $dxchan;
 321                         if ($dxchan && $dxchan->is_user) {
 322                                 $field[3] =~ s/\%5E/^/g;
 323                                 $dxchan->talk($field[1], $to, $via, $field[3]);
 324                         } else {
 325                                 $self->route($field[2], $line); # relay it on its way
 326                         }
 327                         return;
 328                 }
 329
 330                 if ($pcno == 11 || $pcno == 26) { # dx spot
 331
 332                         # route 'foreign' pc26s
 333                         if ($pcno == 26) {
 334                                 if ($field[7] ne $main::mycall) {
 335                                         $self->route($field[7], $line);
 336                                         return;
 337                                 }
 338                         }
 339
 340                         # if this is a 'nodx' node then ignore it
 341                         if ($badnode->in($field[7])) {
 342                                 dbg("PCPROT: Bad Node, dropped") if isdbg('chanerr');
 343                                 return;
 344                         }
 345
 346                         # if this is a 'bad spotter' user then ignore it
 347                         if ($badspotter->in($field[6])) {
 348                                 dbg("PCPROT: Bad Spotter, dropped") if isdbg('chanerr');
 349                                 return;
 350                         }
 351
 352                         # convert the date to a unix date
 353                         my $d = cltounix($field[3], $field[4]);
 354                         # bang out (and don't pass on) if date is invalid or the spot is too old (or too young)
 355                         if (!$d || ($pcno == 11 && ($d < $main::systime - $pc11_max_age || $d > $main::systime + 900))) {
 356                                 dbg("PCPROT: Spot ignored, invalid date or out of range ($field[3] $field[4])\n") if isdbg('chanerr');
 357                                 return;
 358                         }
 359
 360                         # is it 'baddx'
 361                         if ($baddx->in($field[2])) {
 362                                 dbg("PCPROT: Bad DX spot, ignored") if isdbg('chanerr');
 363                                 return;
 364                         }
 365
 366                         # do some de-duping
 367                         $field[5] =~ s/^\s+//;      # take any leading blanks off
 368                         $field[2] = unpad($field[2]);   # take off leading and trailing blanks from spotted callsign
 369                         if ($field[2] =~ /BUST\w*$/) {
 370                                 dbg("PCPROT: useless 'BUSTED' spot") if isdbg('chanerr');
 371                                 return;
 372                         }
 373                         if (Spot::dup($field[1], $field[2], $d, $field[5])) {
 374                                 dbg("PCPROT: Duplicate Spot ignored\n") if isdbg('chanerr');
 375                                 return;
 376                         }
 377                         if ($censorpc) {
 378                                 my @bad;
 379                                 if (@bad = BadWords::check($field[5])) {
 380                                         dbg("PCPROT: Bad words: @bad, dropped") if isdbg('chanerr');
 381                                         return;
 382                                 }
 383                         }
 384
 385                         my @spot = Spot::prepare($field[1], $field[2], $d, $field[5], $field[6], $field[7]);
 386                         # global spot filtering on INPUT
 387                         if ($self->{inspotsfilter}) {
 388                                 my ($filter, $hops) = $self->{inspotsfilter}->it(@spot);
 389                                 unless ($filter) {
 390                                         dbg("PCPROT: Rejected by input spot filter") if isdbg('chanerr');
 391                                         return;
 392                                 }
 393                         }
 394
 395                         # add it
 396                         Spot::add(@spot);
 397
 398             #
 399                         # @spot at this point contains:-
 400             # freq, spotted call, time, text, spotter, spotted cc, spotters cc, orig node
 401                         # then  spotted itu, spotted cq, spotters itu, spotters cq
 402                         # you should be able to route on any of these
 403             #
 404
 405                         # fix up qra locators of known users
 406                         my $user = DXUser->get_current($spot[4]);
 407                         if ($user) {
 408                                 my $qra = $user->qra;
 409                                 unless ($qra && DXBearing::is_qra($qra)) {
 410                                         my $lat = $user->lat;
 411                                         my $long = $user->long;
 412                                         if (defined $lat && defined $long) {
 413                                                 $user->qra(DXBearing::lltoqra($lat, $long));
 414                                                 $user->put;
 415                                         }
 416                                 }
 417
 418                                 # send a remote command to a distant cluster if it is visible and there is no
 419                                 # qra locator and we havn't done it for a month.
 420
 421                                 unless ($user->qra) {
 422                                         my $node;
 423                                         my $to = $user->homenode;
 424                                         my $last = $user->lastoper || 0;
 425                                         if ($to ne $main::mycall && $send_opernam && $main::systime > $last + $DXUser::lastoperinterval && $to && ($node = Route::Node::get($to)) ) {
 426                                                 my $cmd = "forward/opernam $spot[4]";
 427                                                 # send the rcmd but we aren't interested in the replies...
 428                                                 my $dxchan = $node->dxchan;
 429                                                 if ($dxchan && $dxchan->is_clx) {
 430                                                         route(undef, $to, pc84($main::mycall, $to, $main::mycall, $cmd));
 431                                                 } else {
 432                                                         route(undef, $to, pc34($main::mycall, $to, $cmd));
 433                                                 }
 434                                                 if ($to ne $field[7]) {
 435                                                         $to = $field[7];
 436                                                         $node = Route::Node::get($to);
 437                                                         if ($node) {
 438                                                                 $dxchan = $node->dxchan;
 439                                                                 if ($dxchan && $dxchan->is_clx) {
 440                                                                         route(undef, $to, pc84($main::mycall, $to, $main::mycall, $cmd));
 441                                                                 } else {
 442                                                                         route(undef, $to, pc34($main::mycall, $to, $cmd));
 443                                                                 }
 444                                                         }
 445                                                 }
 446                                                 $user->lastoper($main::systime);
 447                                                 $user->put;
 448                                         }
 449                                 }
 450                         }
 451
 452                         # local processing
 453                         my $r;
 454                         eval {
 455                                 $r = Local::spot($self, @spot);
 456                         };
 457 #                       dbg("Local::spot1 error $@") if isdbg('local') if $@;
 458                         return if $r;
 459
 460                         # DON'T be silly and send on PC26s!
 461                         return if $pcno == 26;
 462
 463                         # send out the filtered spots
 464                         send_dx_spot($self, $line, @spot) if @spot;
 465                         return;
 466                 }
 467
 468                 if ($pcno == 12) {              # announces
 469                         # announce duplicate checking
 470                         $field[3] =~ s/^\s+//;  # remove leading blanks
 471                         if (AnnTalk::dup($field[1], $field[2], $field[3])) {
 472                                 dbg("PCPROT: Duplicate Announce ignored") if isdbg('chanerr');
 473                                 return;
 474                         }
 475
 476                         if ($censorpc) {
 477                                 my @bad;
 478                                 if (@bad = BadWords::check($field[3])) {
 479                                         dbg("PCPROT: Bad words: @bad, dropped") if isdbg('chanerr');
 480                                         return;
 481                                 }
 482                         }
 483
 484                         if ($field[2] eq '*' || $field[2] eq $main::mycall) {
 485
 486                                 # global ann filtering on INPUT
 487                                 if ($self->{inannfilter}) {
 488                                         my ($ann_dxcc, $ann_itu, $ann_cq, $org_dxcc, $org_itu, $org_cq) = (0..0);
 489                                         my @dxcc = Prefix::extract($field[1]);
 490                                         if (@dxcc > 0) {
 491                                                 $ann_dxcc = $dxcc[1]->dxcc;
 492                                                 $ann_itu = $dxcc[1]->itu;
 493                                                 $ann_cq = $dxcc[1]->cq();
 494                                         }
 495                                         @dxcc = Prefix::extract($field[5]);
 496                                         if (@dxcc > 0) {
 497                                                 $org_dxcc = $dxcc[1]->dxcc;
 498                                                 $org_itu = $dxcc[1]->itu;
 499                                                 $org_cq = $dxcc[1]->cq();
 500                                         }
 501                                         my ($filter, $hops) = $self->{inannfilter}->it(@field[1..6], $self->{call},
 502                                                                                                         $ann_dxcc, $ann_itu, $ann_cq, $org_dxcc, $org_itu, $org_cq);
 503                                         unless ($filter) {
 504                                                 dbg("PCPROT: Rejected by input announce filter") if isdbg('chanerr');
 505                                                 return;
 506                                         }
 507                                 }
 508
 509                                 # send it
 510                                 $self->send_announce($line, @field[1..6]);
 511                         } else {
 512                                 $self->route($field[2], $line);
 513                         }
 514
 515                         return;
 516                 }
 517
 518                 if ($pcno == 13) {
 519                         last SWITCH;
 520                 }
 521                 if ($pcno == 14) {
 522                         last SWITCH;
 523                 }
 524                 if ($pcno == 15) {
 525                         last SWITCH;
 526                 }
 527
 528                 if ($pcno == 16) {              # add a user
 529
 530                         # general checks
 531                         my $dxchan;
 532                         my $ncall = $field[1];
 533                         my $newline = "PC16^";
 534
 535                         if ($ncall eq $main::mycall) {
 536                                 dbg("PCPROT: trying to alter config on this node from outside!") if isdbg('chanerr');
 537                                 return;
 538                         }
 539                         $dxchan = DXChannel->get($ncall);
 540                         if ($dxchan && $dxchan ne $self) {
 541                                 dbg("PCPROT: PC16 from $self->{call} trying to alter locally connected $ncall, ignored!") if isdbg('chanerr');
 542                                 return;
 543                         }
 544                         my $parent = Route::Node::get($ncall);
 545                         unless ($parent) {
 546                                 dbg("PCPROT: Node $ncall not in config") if isdbg('chanerr');
 547                                 return;
 548                         }
 549
 550                         # input filter if required
 551                         return unless $self->in_filter_route($parent);
 552
 553                         my $i;
 554                         my @rout;
 555                         for ($i = 2; $i < $#field; $i++) {
 556                                 my ($call, $conf, $here) = $field[$i] =~ /^(\S+) (\S) (\d)/o;
 557                                 next unless $call && $conf && defined $here && is_callsign($call);
 558                                 next if $call eq $main::mycall;
 559
 560                                 $conf = $conf eq '*';
 561
 562                                 my $r = Route::User::get($call);
 563                                 my $flags = Route::here($here)|Route::conf($conf);
 564
 565                                 if ($r) {
 566                                         if ($r->flags != $flags) {
 567                                                 $r->flags($flags);
 568                                                 push @rout, $r;
 569                                         }
 570                                         $r->addparent($ncall);
 571                                 } else {
 572                                         push @rout, $parent->add_user($call, $flags);
 573                                 }
 574
 575                                 # add this station to the user database, if required
 576                                 $call =~ s/-\d+$//o;        # remove ssid for users
 577                                 my $user = DXUser->get_current($call);
 578                                 $user = DXUser->new($call) if !$user;
 579                                 $user->homenode($parent->call) if !$user->homenode;
 580                                 $user->node($parent->call);
 581                                 $user->lastin($main::systime) unless DXChannel->get($call);
 582                                 $user->put;
 583                         }
 584
 585
 586                         # queue up any messages (look for privates only)
 587                         DXMsg::queue_msg(1) if $self->state eq 'normal';
 588
 589                         $self->route_pc16($parent, @rout) if @rout;
 590                         return;
 591                 }
 592
 593                 if ($pcno == 17) {              # remove a user
 594                         my $dxchan;
 595                         my $ncall = $field[2];
 596                         my $ucall = $field[1];
 597                         if ($ncall eq $main::mycall) {
 598                                 dbg("PCPROT: trying to alter config on this node from outside!") if isdbg('chanerr');
 599                                 return;
 600                         }
 601                         $dxchan = DXChannel->get($ncall);
 602                         if ($dxchan && $dxchan ne $self) {
 603                                 dbg("PCPROT: PC17 from $self->{call} trying to alter locally connected $ncall, ignored!") if isdbg('chanerr');
 604                                 return;
 605                         }
 606                         my $parent = Route::Node::get($ncall);
 607                         unless ($parent) {
 608                                 dbg("PCPROT: Route::Node $ncall not in config") if isdbg('chanerr');
 609                                 return;
 610                         }
 611
 612                         # input filter if required
 613                         return unless $self->in_filter_route($parent);
 614
 615                         my @rout = $parent->del_user($ucall);
 616                         $self->route_pc17($parent, @rout) if @rout;
 617                         return;
 618                 }
 619
 620                 if ($pcno == 18) {              # link request
 621                         $self->state('init');
 622
 623                         # first clear out any nodes on this dxchannel
 624                         my $parent = Route::Node::get($self->{call});
 625                         my @rout = $parent->del_nodes;
 626                         $self->route_pc21(@rout, $parent);
 627                         $self->send_local_config();
 628                         $self->send(pc20());
 629                         return;             # we don't pass these on
 630                 }
 631
 632                 if ($pcno == 19) {              # incoming cluster list
 633                         my $i;
 634                         my $newline = "PC19^";
 635
 636                         # new routing list
 637                         my @rout;
 638                         my $parent = Route::Node::get($self->{call});
 639                         unless ($parent) {
 640                                 dbg("DXPROT: my parent $self->{call} has disappeared");
 641                                 $self->disconnect;
 642                                 return;
 643                         }
 644
 645                         # parse the PC19
 646                         for ($i = 1; $i < $#field-1; $i += 4) {
 647                                 my $here = $field[$i];
 648                                 my $call = uc $field[$i+1];
 649                                 my $conf = $field[$i+2];
 650                                 my $ver = $field[$i+3];
 651                                 next unless defined $here && defined $conf && is_callsign($call);
 652                                 # check for sane parameters
 653                                 $ver = 5000 if $ver eq '0000';
 654                                 next if $ver < 5000; # only works with version 5 software
 655                                 next if length $call < 3; # min 3 letter callsigns
 656                                 next if $call eq $main::mycall;
 657
 658                                 # update it if required
 659                                 my $r = Route::Node::get($call);
 660                                 my $flags = Route::here($here)|Route::conf($conf);
 661                                 if ($r) {
 662                                         my $ar;
 663                                         if ($call ne $parent->call) {
 664                                                 if ($self->in_filter_route($r)) {
 665                                                         $ar = $parent->add($call, $ver, $flags);
 666                                                         push @rout, $ar if $ar;
 667                                                 } else {
 668                                                         next;
 669                                                 }
 670                                         }
 671                                         if ($r->version ne $ver || $r->flags != $flags) {
 672                                                 $r->version($ver);
 673                                                 $r->flags($flags);
 674                                                 push @rout, $r unless $ar;
 675                                         }
 676                                 } else {
 677                                         if ($call eq $self->{call}) {
 678                                                 dbg("DXPROT: my channel route for $call has disappeared");
 679                                                 next;
 680                                         };
 681
 682                                         my $new = Route->new($call);          # throw away
 683                                     if ($self->in_filter_route($new)) {
 684                                                 my $r = $parent->add($call, $ver, $flags);
 685                                                 push @rout, $r;
 686                                         } else {
 687                                                 next;
 688                                         }
 689                                 }
 690
 691                                 # unbusy and stop and outgoing mail (ie if somehow we receive another PC19 without a disconnect)
 692                                 my $mref = DXMsg::get_busy($call);
 693                                 $mref->stop_msg($call) if $mref;
 694
 695                                 # add this station to the user database, if required (don't remove SSID from nodes)
 696                                 my $user = DXUser->get_current($call);
 697                                 if (!$user) {
 698                                         $user = DXUser->new($call);
 699                                         $user->sort('A');
 700                                         $user->priv(1);                   # I have relented and defaulted nodes
 701                                         $self->{priv} = 1;                # to user RCMDs allowed
 702                                         $user->homenode($call);
 703                                         $user->node($call);
 704                                 }
 705                                 $user->lastin($main::systime) unless DXChannel->get($call);
 706                                 $user->put;
 707                         }
 708
 709                         $self->route_pc19(@rout) if @rout;
 710                         return;
 711                 }
 712
 713                 if ($pcno == 20) {              # send local configuration
 714                         $self->send_local_config();
 715                         $self->send(pc22());
 716                         $self->state('normal');
 717                         return;
 718                 }
 719
 720                 if ($pcno == 21) {              # delete a cluster from the list
 721                         my $call = uc $field[1];
 722                         my @rout;
 723                         my $parent = Route::Node::get($self->{call});
 724                         unless ($parent) {
 725                                 dbg("DXPROT: my parent $self->{call} has disappeared");
 726                                 $self->disconnect;
 727                                 return;
 728                         }
 729                         my $node = Route::Node::get($call);
 730                         if ($call ne $main::mycall) { # don't allow malicious buggers to disconnect me!
 731                                 if ($call eq $self->{call}) {
 732                                         dbg("PCPROT: Trying to disconnect myself with PC21") if isdbg('chanerr');
 733                                         return;
 734                                 }
 735
 736                                 if ($node) {
 737                                         # input filter it
 738                                         return unless $self->in_filter_route($node);
 739
 740                                         # routing objects
 741                                         push @rout, $node->del($parent);
 742                                 }
 743                         } else {
 744                                 dbg("PCPROT: I WILL _NOT_ be disconnected!") if isdbg('chanerr');
 745                                 return;
 746                         }
 747                         $self->route_pc21(@rout) if @rout;
 748                         return;
 749                 }
 750
 751                 if ($pcno == 22) {
 752                         $self->state('normal');
 753                         return;
 754                 }
 755
 756                 if ($pcno == 23 || $pcno == 27) { # WWV info
 757
 758                         # route 'foreign' pc27s
 759                         if ($pcno == 27) {
 760                                 if ($field[8] ne $main::mycall) {
 761                                         $self->route($field[8], $line);
 762                                         return;
 763                                 }
 764                         }
 765
 766                         # do some de-duping
 767                         my $d = cltounix($field[1], sprintf("%02d18Z", $field[2]));
 768                         my $sfi = unpad($field[3]);
 769                         my $k = unpad($field[4]);
 770                         my $i = unpad($field[5]);
 771                         my ($r) = $field[6] =~ /R=(\d+)/;
 772                         $r = 0 unless $r;
 773                         if (($pcno == 23 && $d < $main::systime - $pc23_max_age) || $d > $main::systime + 1500 || $field[2] < 0 || $field[2] > 23) {
 774                                 dbg("PCPROT: WWV Date ($field[1] $field[2]) out of range") if isdbg('chanerr');
 775                                 return;
 776                         }
 777                         if (Geomag::dup($d,$sfi,$k,$i,$field[6])) {
 778                                 dbg("PCPROT: Dup WWV Spot ignored\n") if isdbg('chanerr');
 779                                 return;
 780                         }
 781                         $field[7] =~ s/-\d+$//o;            # remove spotter's ssid
 782
 783                         my $wwv = Geomag::update($d, $field[2], $sfi, $k, $i, @field[6..8], $r);
 784
 785                         my $rep;
 786                         eval {
 787                                 $rep = Local::wwv($self, $field[1], $field[2], $sfi, $k, $i, @field[6..8], $r);
 788                         };
 789 #                       dbg("Local::wwv2 error $@") if isdbg('local') if $@;
 790                         return if $rep;
 791
 792                         # DON'T be silly and send on PC27s!
 793                         return if $pcno == 27;
 794
 795                         # broadcast to the eager world
 796                         send_wwv_spot($self, $line, $d, $field[2], $sfi, $k, $i, @field[6..8]);
 797                         return;
 798                 }
 799
 800                 if ($pcno == 24) {              # set here status
 801                         my $call = uc $field[1];
 802                         my ($nref, $uref);
 803                         $nref = Route::Node::get($call);
 804                         $uref = Route::User::get($call);
 805                         return unless $nref || $uref;   # if we don't know where they are, it's pointless sending it on
 806
 807                         unless (eph_dup($line)) {
 808                                 $nref->here($field[2]) if $nref;
 809                                 $uref->here($field[2]) if $uref;
 810                                 my $ref = $nref || $uref;
 811                                 return unless $self->in_filter_route($ref);
 812                                 $self->route_pc24($ref, $field[3]);
 813                         }
 814                         return;
 815                 }
 816
 817                 if ($pcno == 25) {      # merge request
 818                         if ($field[1] ne $main::mycall) {
 819                                 $self->route($field[1], $line);
 820                                 return;
 821                         }
 822                         if ($field[2] eq $main::mycall) {
 823                                 dbg("PCPROT: Trying to merge to myself, ignored") if isdbg('chanerr');
 824                                 return;
 825                         }
 826
 827                         Log('DXProt', "Merge request for $field[3] spots and $field[4] WWV from $field[1]");
 828
 829                         # spots
 830                         if ($field[3] > 0) {
 831                                 my @in = reverse Spot::search(1, undef, undef, 0, $field[3]);
 832                                 my $in;
 833                                 foreach $in (@in) {
 834                                         $self->send(pc26(@{$in}[0..4], $field[2]));
 835                                 }
 836                         }
 837
 838                         # wwv
 839                         if ($field[4] > 0) {
 840                                 my @in = reverse Geomag::search(0, $field[4], time, 1);
 841                                 my $in;
 842                                 foreach $in (@in) {
 843                                         $self->send(pc27(@{$in}[0..5], $field[2]));
 844                                 }
 845                         }
 846                         return;
 847                 }
 848
 849                 if (($pcno >= 28 && $pcno <= 33) || $pcno == 40 || $pcno == 42 || $pcno == 49) { # mail/file handling
 850                         if ($pcno == 49 || $field[1] eq $main::mycall) {
 851                                 DXMsg::process($self, $line);
 852                         } else {
 853                                 $self->route($field[1], $line) unless $self->is_clx;
 854                         }
 855                         return;
 856                 }
 857
 858                 if ($pcno == 34 || $pcno == 36) { # remote commands (incoming)
 859                         $self->process_rcmd($field[1], $field[2], $field[2], $field[3]);
 860                         return;
 861                 }
 862
 863                 if ($pcno == 35) {              # remote command replies
 864                         $self->process_rcmd_reply($field[1], $field[2], $field[1], $field[3]);
 865                         return;
 866                 }
 867
 868                 # for pc 37 see 44 onwards
 869
 870                 if ($pcno == 38) {              # node connected list from neighbour
 871                         return;
 872                 }
 873
 874                 if ($pcno == 39) {              # incoming disconnect
 875                         if ($field[1] eq $self->{call}) {
 876                                 $self->disconnect(1);
 877                         } else {
 878                                 dbg("PCPROT: came in on wrong channel") if isdbg('chanerr');
 879                         }
 880                         return;
 881                 }
 882
 883                 if ($pcno == 41) {              # user info
 884                         my $call = $field[1];
 885
 886                         # input filter if required
 887                         my $ref = Route::get($call) || Route->new($call);
 888                         return unless $self->in_filter_route($ref);
 889
 890                         # add this station to the user database, if required
 891                         my $user = DXUser->get_current($call);
 892                         $user = DXUser->new($call) if !$user;
 893
 894                         if ($field[2] == 1) {
 895                                 $user->name($field[3]);
 896                         } elsif ($field[2] == 2) {
 897                                 $user->qth($field[3]);
 898                         } elsif ($field[2] == 3) {
 899                                 my ($lat, $long) = DXBearing::stoll($field[3]);
 900                                 $user->lat($lat);
 901                                 $user->long($long);
 902                                 $user->qra(DXBearing::lltoqra($lat, $long)) unless $user->qra && DXBearing::is_qra($user->qra);
 903                         } elsif ($field[2] == 4) {
 904                                 $user->homenode($field[3]);
 905                         }
 906                         $user->lastoper($main::systime);   # to cut down on excessive for/opers being generated
 907                         $user->put;
 908
 909 #  perhaps this IS what we want after all
 910 #                       $self->route_pc41($ref, $call, $field[2], $field[3], $field[4]);
 911 #                       return;
 912                 }
 913
 914                 if ($pcno == 43) {
 915                         last SWITCH;
 916                 }
 917
 918                 if ($pcno == 37 || $pcno == 44 || $pcno == 45 || $pcno == 46 || $pcno == 47 || $pcno == 48) {
 919                         DXDb::process($self, $line);
 920                         return;
 921                 }
 922
 923                 if ($pcno == 50) {              # keep alive/user list
 924                         my $call = $field[1];
 925                         my $node = Route::Node::get($call);
 926                         if ($node) {
 927                                 return unless $node->call eq $self->{call};
 928                                 $node->usercount($field[2]);
 929
 930                                 # input filter if required
 931                                 return unless $self->in_filter_route($node);
 932
 933                                 $self->route_pc50($node, $field[2], $field[3]) unless eph_dup($line);
 934                         }
 935                         return;
 936                 }
 937
 938                 if ($pcno == 51) {              # incoming ping requests/answers
 939                         my $to = $field[1];
 940                         my $from = $field[2];
 941                         my $flag = $field[3];
 942
 943                         # is it for us?
 944                         if ($to eq $main::mycall) {
 945                                 if ($flag == 1) {
 946                                         $self->send(pc51($from, $to, '0'));
 947                                 } else {
 948                                         # it's a reply, look in the ping list for this one
 949                                         my $ref = $pings{$from};
 950                                         if ($ref) {
 951                                                 my $tochan =  DXChannel->get($from);
 952                                                 while (@$ref) {
 953                                                         my $r = shift @$ref;
 954                                                         my $dxchan = DXChannel->get($r->{call});
 955                                                         next unless $dxchan;
 956                                                         my $t = tv_interval($r->{t}, [ gettimeofday ]);
 957                                                         if ($dxchan->is_user) {
 958                                                                 my $s = sprintf "%.2f", $t;
 959                                                                 my $ave = sprintf "%.2f", $tochan ? ($tochan->{pingave} || $t) : $t;
 960                                                                 $dxchan->send($dxchan->msg('pingi', $from, $s, $ave))
 961                                                         } elsif ($dxchan->is_node) {
 962                                                                 if ($tochan) {
 963                                                                         $tochan->{nopings} = $tochan->user->nopings || 2; # pump up the timer
 964                                                                         push @{$tochan->{pingtime}}, $t;
 965                                                                         shift @{$tochan->{pingtime}} if @{$tochan->{pingtime}} > 6;
 966                                                                         my $st;
 967                                                                         for (@{$tochan->{pingtime}}) {
 968                                                                                 $st += $_;
 969                                                                         }
 970                                                                         $tochan->{pingave} = $st / @{$tochan->{pingtime}};
 971                                                                 }
 972                                                         }
 973                                                 }
 974                                         }
 975                                 }
 976                         } else {
 977                                 # route down an appropriate thingy
 978                                 $self->route($to, $line);
 979                         }
 980                         return;
 981                 }
 982
 983                 if ($pcno == 75) {              # dunno but route it
 984                         my $call = $field[1];
 985                         if ($call ne $main::mycall) {
 986                                 $self->route($call, $line);
 987                         }
 988                         return;
 989                 }
 990
 991                 if ($pcno == 73) {  # WCY broadcasts
 992                         my $call = $field[1];
 993
 994                         # do some de-duping
 995                         my $d = cltounix($call, sprintf("%02d18Z", $field[2]));
 996                         if (($pcno == 23 && $d < $main::systime - $pc23_max_age) || $d > $main::systime + 1500 || $field[2] < 0 || $field[2] > 23) {
 997                                 dbg("PCPROT: WCY Date ($call $field[2]) out of range") if isdbg('chanerr');
 998                                 return;
 999                         }
1000                         @field = map { unpad($_) } @field;
1001                         if (WCY::dup($d,@field[3..7])) {
1002                                 dbg("PCPROT: Dup WCY Spot ignored\n") if isdbg('chanerr');
1003                                 return;
1004                         }
1005
1006                         my $wcy = WCY::update($d, @field[2..12]);
1007
1008                         my $rep;
1009                         eval {
1010                                 $rep = Local::wwv($self, @field[1..12]);
1011                         };
1012                         # dbg("Local::wcy error $@") if isdbg('local') if $@;
1013                         return if $rep;
1014
1015                         # broadcast to the eager world
1016                         send_wcy_spot($self, $line, $d, @field[2..12]);
1017                         return;
1018                 }
1019
1020                 if ($pcno == 84) { # remote commands (incoming)
1021                         $self->process_rcmd($field[1], $field[2], $field[3], $field[4]);
1022                         return;
1023                 }
1024
1025                 if ($pcno == 85) {              # remote command replies
1026                         $self->process_rcmd_reply($field[1], $field[2], $field[3], $field[4]);
1027
1028                         return;
1029                 }
1030         }
1031
1032         # if get here then rebroadcast the thing with its Hop count decremented (if
1033         # there is one). If it has a hop count and it decrements to zero then don't
1034         # rebroadcast it.
1035         #
1036         # NOTE - don't arrive here UNLESS YOU WANT this lump of protocol to be
1037         #        REBROADCAST!!!!
1038         #
1039
1040         if (eph_dup($line)) {
1041                 dbg("PCPROT: Ephemeral dup, dropped") if isdbg('chanerr');
1042         } else {
1043                 unless ($self->{isolate}) {
1044                         broadcast_ak1a($line, $self); # send it to everyone but me
1045                 }
1046         }
1047 }
1048
1049 #
1050 # This is called from inside the main cluster processing loop and is used
1051 # for despatching commands that are doing some long processing job
1052 #
1053 sub process
1054 {
1055         my $t = time;
1056         my @dxchan = DXChannel->get_all();
1057         my $dxchan;
1058
1059         foreach $dxchan (@dxchan) {
1060                 next unless $dxchan->is_node();
1061                 next if $dxchan == $me;
1062
1063                 # send a pc50 out on this channel
1064                 $dxchan->{pc50_t} = $main::systime unless exists $dxchan->{pc50_t};
1065                 if ($t >= $dxchan->{pc50_t} + $DXProt::pc50_interval) {
1066                         my $s = pc50($me, scalar DXChannel::get_all_users);
1067                         eph_dup($s);
1068                         $dxchan->send($s);
1069                         $dxchan->{pc50_t} = $t;
1070                 }
1071
1072                 # send a ping out on this channel
1073                 if ($dxchan->{pingint} && $t >= $dxchan->{pingint} + $dxchan->{lastping}) {
1074                         if ($dxchan->{nopings} <= 0) {
1075                                 $dxchan->disconnect;
1076                         } else {
1077                                 addping($main::mycall, $dxchan->call);
1078                                 $dxchan->{nopings} -= 1;
1079                                 $dxchan->{lastping} = $t;
1080                         }
1081                 }
1082         }
1083
1084         # every ten seconds
1085         if ($t - $last10 >= 10) {
1086                 # clean out ephemera
1087
1088                 eph_clean();
1089
1090                 $last10 = $t;
1091         }
1092
1093         if ($main::systime - 3600 > $last_hour) {
1094                 $last_hour = $main::systime;
1095         }
1096 }
1097
1098 #
1099 # finish up a pc context
1100 #
1101
1102 #
1103 # some active measures
1104 #
1105
1106 sub send_dx_spot
1107 {
1108         my $self = shift;
1109         my $line = shift;
1110         my @dxchan = DXChannel->get_all();
1111         my $dxchan;
1112
1113         # send it if it isn't the except list and isn't isolated and still has a hop count
1114         # taking into account filtering and so on
1115         foreach $dxchan (@dxchan) {
1116                 next if $dxchan == $me;
1117                 next if $dxchan == $self && $self->is_node;
1118                 $dxchan->dx_spot($line, $self->{isolate}, @_, $self->{call});
1119         }
1120 }
1121
1122 sub dx_spot
1123 {
1124         my $self = shift;
1125         my $line = shift;
1126         my $isolate = shift;
1127         my ($filter, $hops);
1128
1129         if ($self->{spotsfilter}) {
1130                 ($filter, $hops) = $self->{spotsfilter}->it(@_);
1131                 return unless $filter;
1132         }
1133         send_prot_line($self, $filter, $hops, $isolate, $line)
1134 }
1135
1136 sub send_prot_line
1137 {
1138         my ($self, $filter, $hops, $isolate, $line) = @_;
1139         my $routeit;
1140
1141         if ($hops) {
1142                 $routeit = $line;
1143                 $routeit =~ s/\^H\d+\^\~$/\^H$hops\^\~/;
1144         } else {
1145                 $routeit = adjust_hops($self, $line);  # adjust its hop count by node name
1146                 return unless $routeit;
1147         }
1148         if ($filter) {
1149                 $self->send($routeit) if $routeit;
1150         } else {
1151                 $self->send($routeit) unless $self->{isolate} || $isolate;
1152         }
1153 }
1154
1155
1156 sub send_wwv_spot
1157 {
1158         my $self = shift;
1159         my $line = shift;
1160         my @dxchan = DXChannel->get_all();
1161         my $dxchan;
1162         my ($wwv_dxcc, $wwv_itu, $wwv_cq, $org_dxcc, $org_itu, $org_cq) = (0..0);
1163         my @dxcc = Prefix::extract($_[7]);
1164         if (@dxcc > 0) {
1165                 $wwv_dxcc = $dxcc[1]->dxcc;
1166                 $wwv_itu = $dxcc[1]->itu;
1167                 $wwv_cq = $dxcc[1]->cq;
1168         }
1169         @dxcc = Prefix::extract($_[8]);
1170         if (@dxcc > 0) {
1171                 $org_dxcc = $dxcc[1]->dxcc;
1172                 $org_itu = $dxcc[1]->itu;
1173                 $org_cq = $dxcc[1]->cq;
1174         }
1175
1176         # send it if it isn't the except list and isn't isolated and still has a hop count
1177         # taking into account filtering and so on
1178         foreach $dxchan (@dxchan) {
1179                 next if $dxchan == $me;
1180                 next if $dxchan == $self && $self->is_node;
1181                 my $routeit;
1182                 my ($filter, $hops);
1183
1184                 $dxchan->wwv($line, $self->{isolate}, @_, $self->{call}, $wwv_dxcc, $wwv_itu, $wwv_cq, $org_dxcc, $org_itu, $org_cq);
1185         }
1186
1187 }
1188
1189 sub wwv
1190 {
1191         my $self = shift;
1192         my $line = shift;
1193         my $isolate = shift;
1194         my ($filter, $hops);
1195
1196         if ($self->{wwvfilter}) {
1197                 ($filter, $hops) = $self->{wwvfilter}->it(@_);
1198                 return unless $filter;
1199         }
1200         send_prot_line($self, $filter, $hops, $isolate, $line)
1201 }
1202
1203 sub send_wcy_spot
1204 {
1205         my $self = shift;
1206         my $line = shift;
1207         my @dxchan = DXChannel->get_all();
1208         my $dxchan;
1209         my ($wcy_dxcc, $wcy_itu, $wcy_cq, $org_dxcc, $org_itu, $org_cq) = (0..0);
1210         my @dxcc = Prefix::extract($_[11]);
1211         if (@dxcc > 0) {
1212                 $wcy_dxcc = $dxcc[1]->dxcc;
1213                 $wcy_itu = $dxcc[1]->itu;
1214                 $wcy_cq = $dxcc[1]->cq;
1215         }
1216         @dxcc = Prefix::extract($_[12]);
1217         if (@dxcc > 0) {
1218                 $org_dxcc = $dxcc[1]->dxcc;
1219                 $org_itu = $dxcc[1]->itu;
1220                 $org_cq = $dxcc[1]->cq;
1221         }
1222
1223         # send it if it isn't the except list and isn't isolated and still has a hop count
1224         # taking into account filtering and so on
1225         foreach $dxchan (@dxchan) {
1226                 next if $dxchan == $me;
1227                 next if $dxchan == $self;
1228
1229                 $dxchan->wcy($line, $self->{isolate}, @_, $self->{call}, $wcy_dxcc, $wcy_itu, $wcy_cq, $org_dxcc, $org_itu, $org_cq);
1230         }
1231 }
1232
1233 sub wcy
1234 {
1235         my $self = shift;
1236         my $line = shift;
1237         my $isolate = shift;
1238         my ($filter, $hops);
1239
1240         if ($self->{wcyfilter}) {
1241                 ($filter, $hops) = $self->{wcyfilter}->it(@_);
1242                 return unless $filter;
1243         }
1244         send_prot_line($self, $filter, $hops, $isolate, $line) if $self->is_clx || $self->is_spider || $self->is_dxnet;
1245 }
1246
1247 # send an announce
1248 sub send_announce
1249 {
1250         my $self = shift;
1251         my $line = shift;
1252         my @dxchan = DXChannel->get_all();
1253         my $dxchan;
1254         my $target;
1255         my $to = 'To ';
1256         my $text = unpad($_[2]);
1257
1258         if ($_[3] eq '*') {     # sysops
1259                 $target = "SYSOP";
1260         } elsif ($_[3] gt ' ') { # speciality list handling
1261                 my ($name) = split /\./, $_[3];
1262                 $target = "$name"; # put the rest in later (if bothered)
1263         }
1264
1265         if ($_[5] eq '1') {
1266                 $target = "WX";
1267                 $to = '';
1268         }
1269         $target = "ALL" if !$target;
1270
1271         Log('ann', $target, $_[0], $text);
1272
1273         # obtain country codes etc
1274         my ($ann_dxcc, $ann_itu, $ann_cq, $org_dxcc, $org_itu, $org_cq) = (0..0);
1275         my @dxcc = Prefix::extract($_[0]);
1276         if (@dxcc > 0) {
1277                 $ann_dxcc = $dxcc[1]->dxcc;
1278                 $ann_itu = $dxcc[1]->itu;
1279                 $ann_cq = $dxcc[1]->cq;
1280         }
1281         @dxcc = Prefix::extract($_[4]);
1282         if (@dxcc > 0) {
1283                 $org_dxcc = $dxcc[1]->dxcc;
1284                 $org_itu = $dxcc[1]->itu;
1285                 $org_cq = $dxcc[1]->cq;
1286         }
1287
1288         # send it if it isn't the except list and isn't isolated and still has a hop count
1289         # taking into account filtering and so on
1290         foreach $dxchan (@dxchan) {
1291                 next if $dxchan == $me;
1292                 next if $dxchan == $self && $self->is_node;
1293                 my $routeit;
1294                 my ($filter, $hops);
1295
1296                 $dxchan->announce($line, $self->{isolate}, $to, $target, $text, @_, $self->{call}, $ann_dxcc, $ann_itu, $ann_cq, $org_dxcc, $org_itu, $org_cq)
1297         }
1298 }
1299
1300 sub announce
1301 {
1302         my $self = shift;
1303         my $line = shift;
1304         my $isolate = shift;
1305         my $to = shift;
1306         my $target = shift;
1307         my ($filter, $hops);
1308
1309         if ($self->{annfilter}) {
1310                 ($filter, $hops) = $self->{annfilter}->it(@_);
1311                 return unless $filter;
1312         }
1313         send_prot_line($self, $filter, $hops, $isolate, $line) unless $_[1] eq $main::mycall;
1314 }
1315
1316
1317 sub send_local_config
1318 {
1319         my $self = shift;
1320         my $n;
1321         my @nodes;
1322         my @localnodes;
1323         my @remotenodes;
1324
1325         dbg('DXProt::send_local_config') if isdbg('trace');
1326
1327         # send our nodes
1328         if ($self->{isolate}) {
1329                 @localnodes = ( $main::routeroot );
1330         } else {
1331                 # create a list of all the nodes that are not connected to this connection
1332                 # and are not themselves isolated, this to make sure that isolated nodes
1333         # don't appear outside of this node
1334                 my @dxchan = grep { $_->call ne $main::mycall && $_->call ne $self->{call} } DXChannel::get_all_nodes();
1335                 @localnodes = map { my $r = Route::Node::get($_->{call}); $r ? $r : () } @dxchan if @dxchan;
1336                 my @intcalls = map { $_->nodes } @localnodes if @localnodes;
1337                 my $ref = Route::Node::get($self->{call});
1338                 my @rnodes = $ref->nodes;
1339                 for my $n (@intcalls) {
1340                         push @remotenodes, Route::Node::get($n) unless grep $n eq $_, @rnodes;
1341                 }
1342                 unshift @localnodes, $main::routeroot;
1343         }
1344
1345         send_route($self, \&pc19, scalar(@localnodes)+scalar(@remotenodes), @localnodes, @remotenodes);
1346
1347         # get all the users connected on the above nodes and send them out
1348         foreach $n (@localnodes, @remotenodes) {
1349                 if ($n) {
1350                         send_route($self, \&pc16, 1, $n, map {my $r = Route::User::get($_); $r ? ($r) : ()} $n->users);
1351                 } else {
1352                         dbg("sent a null value") if isdbg('chanerr');
1353                 }
1354         }
1355 }
1356
1357 #
1358 # route a message down an appropriate interface for a callsign
1359 #
1360 # is called route(to, pcline);
1361 #
1362 sub route
1363 {
1364         my ($self, $call, $line) = @_;
1365
1366         if (ref $self && $call eq $self->{call}) {
1367                 dbg("PCPROT: Trying to route back to source, dropped") if isdbg('chanerr');
1368                 return;
1369         }
1370
1371         # always send it down the local interface if available
1372         my $dxchan = DXChannel->get($call);
1373         unless ($dxchan) {
1374                 my $cl = Route::get($call);
1375                 $dxchan = $cl->dxchan if $cl;
1376                 if (ref $dxchan) {
1377                         if (ref $self && $dxchan eq $self) {
1378                                 dbg("PCPROT: Trying to route back to source, dropped") if isdbg('chanerr');
1379                                 return;
1380                         }
1381                 }
1382         }
1383         if ($dxchan) {
1384                 my $routeit = adjust_hops($dxchan, $line);   # adjust its hop count by node name
1385                 if ($routeit) {
1386                         $dxchan->send($routeit) unless $dxchan == $me;
1387                 }
1388         } else {
1389                 dbg("PCPROT: No route available, dropped") if isdbg('chanerr');
1390         }
1391 }
1392
1393 # broadcast a message to all clusters taking into account isolation
1394 # [except those mentioned after buffer]
1395 sub broadcast_ak1a
1396 {
1397         my $s = shift;                          # the line to be rebroadcast
1398         my @except = @_;                        # to all channels EXCEPT these (dxchannel refs)
1399         my @dxchan = DXChannel::get_all_nodes();
1400         my $dxchan;
1401
1402         # send it if it isn't the except list and isn't isolated and still has a hop count
1403         foreach $dxchan (@dxchan) {
1404                 next if grep $dxchan == $_, @except;
1405                 next if $dxchan == $me;
1406
1407                 my $routeit = adjust_hops($dxchan, $s);      # adjust its hop count by node name
1408                 $dxchan->send($routeit) unless $dxchan->{isolate} || !$routeit;
1409         }
1410 }
1411
1412 # broadcast a message to all clusters ignoring isolation
1413 # [except those mentioned after buffer]
1414 sub broadcast_all_ak1a
1415 {
1416         my $s = shift;                          # the line to be rebroadcast
1417         my @except = @_;                        # to all channels EXCEPT these (dxchannel refs)
1418         my @dxchan = DXChannel::get_all_nodes();
1419         my $dxchan;
1420
1421         # send it if it isn't the except list and isn't isolated and still has a hop count
1422         foreach $dxchan (@dxchan) {
1423                 next if grep $dxchan == $_, @except;
1424                 next if $dxchan == $me;
1425
1426                 my $routeit = adjust_hops($dxchan, $s);      # adjust its hop count by node name
1427                 $dxchan->send($routeit);
1428         }
1429 }
1430
1431 # broadcast to all users
1432 # storing the spot or whatever until it is in a state to receive it
1433 sub broadcast_users
1434 {
1435         my $s = shift;                          # the line to be rebroadcast
1436         my $sort = shift;           # the type of transmission
1437         my $fref = shift;           # a reference to an object to filter on
1438         my @except = @_;                        # to all channels EXCEPT these (dxchannel refs)
1439         my @dxchan = DXChannel::get_all_users();
1440         my $dxchan;
1441         my @out;
1442
1443         foreach $dxchan (@dxchan) {
1444                 next if grep $dxchan == $_, @except;
1445                 push @out, $dxchan;
1446         }
1447         broadcast_list($s, $sort, $fref, @out);
1448 }
1449
1450 # broadcast to a list of users
1451 sub broadcast_list
1452 {
1453         my $s = shift;
1454         my $sort = shift;
1455         my $fref = shift;
1456         my $dxchan;
1457
1458         foreach $dxchan (@_) {
1459                 my $filter = 1;
1460                 next if $dxchan == $me;
1461
1462                 if ($sort eq 'dx') {
1463                     next unless $dxchan->{dx};
1464                         ($filter) = $dxchan->{spotsfilter}->it(@{$fref}) if ref $fref;
1465                         next unless $filter;
1466                 }
1467                 next if $sort eq 'ann' && !$dxchan->{ann} && $s !~ /^To\s+LOCAL\s+de\s+(?:$main::myalias|$main::mycall)/i;
1468                 next if $sort eq 'wwv' && !$dxchan->{wwv};
1469                 next if $sort eq 'wcy' && !$dxchan->{wcy};
1470                 next if $sort eq 'wx' && !$dxchan->{wx};
1471
1472                 $s =~ s/\a//og unless $dxchan->{beep};
1473
1474                 if ($dxchan->{state} eq 'prompt' || $dxchan->{state} eq 'talk') {
1475                         $dxchan->send($s);
1476                 } else {
1477                         $dxchan->delay($s);
1478                 }
1479         }
1480 }
1481
1482
1483 #
1484 # obtain the hops from the list for this callsign and pc no
1485 #
1486
1487 sub get_hops
1488 {
1489         my $pcno = shift;
1490         my $hops = $DXProt::hopcount{$pcno};
1491         $hops = $DXProt::def_hopcount if !$hops;
1492         return "H$hops";
1493 }
1494
1495 #
1496 # adjust the hop count on a per node basis using the user loadable
1497 # hop table if available or else decrement an existing one
1498 #
1499
1500 sub adjust_hops
1501 {
1502         my $self = shift;
1503         my $s = shift;
1504         my $call = $self->{call};
1505         my $hops;
1506
1507         if (($hops) = $s =~ /\^H(\d+)\^~?$/o) {
1508                 my ($pcno) = $s =~ /^PC(\d\d)/o;
1509                 confess "$call called adjust_hops with '$s'" unless $pcno;
1510                 my $ref = $nodehops{$call} if %nodehops;
1511                 if ($ref) {
1512                         my $newhops = $ref->{$pcno};
1513                         return "" if defined $newhops && $newhops == 0;
1514                         $newhops = $ref->{default} unless $newhops;
1515                         return "" if defined $newhops && $newhops == 0;
1516                         $newhops = $hops if !$newhops;
1517                         $s =~ s/\^H(\d+)(\^~?)$/\^H$newhops$2/ if $newhops;
1518                 } else {
1519                         # simply decrement it
1520                         $hops--;
1521                         return "" if !$hops;
1522                         $s =~ s/\^H(\d+)(\^~?)$/\^H$hops$2/ if $hops;
1523                 }
1524         }
1525         return $s;
1526 }
1527
1528 #
1529 # load hop tables
1530 #
1531 sub load_hops
1532 {
1533         my $self = shift;
1534         return $self->msg('lh1') unless -e "$main::data/hop_table.pl";
1535         do "$main::data/hop_table.pl";
1536         return $@ if $@;
1537         return 0;
1538 }
1539
1540
1541 # add a ping request to the ping queues
1542 sub addping
1543 {
1544         my ($from, $to) = @_;
1545         my $ref = $pings{$to} || [];
1546         my $r = {};
1547         $r->{call} = $from;
1548         $r->{t} = [ gettimeofday ];
1549         route(undef, $to, pc51($to, $main::mycall, 1));
1550         push @$ref, $r;
1551         $pings{$to} = $ref;
1552 }
1553
1554 sub process_rcmd
1555 {
1556         my ($self, $tonode, $fromnode, $user, $cmd) = @_;
1557         if ($tonode eq $main::mycall) {
1558                 my $ref = DXUser->get_current($fromnode);
1559                 my $cref = Route::Node::get($fromnode);
1560                 Log('rcmd', 'in', $ref->{priv}, $fromnode, $cmd);
1561                 if ($cmd !~ /^\s*rcmd/i && $cref && $ref && $cref->call eq $ref->homenode) { # not allowed to relay RCMDS!
1562                         if ($ref->{priv}) {             # you have to have SOME privilege, the commands have further filtering
1563                                 $self->{remotecmd} = 1; # for the benefit of any command that needs to know
1564                                 my $oldpriv = $self->{priv};
1565                                 $self->{priv} = $ref->{priv}; # assume the user's privilege level
1566                                 my @in = (DXCommandmode::run_cmd($self, $cmd));
1567                                 $self->{priv} = $oldpriv;
1568                                 $self->send_rcmd_reply($main::mycall, $fromnode, $user, @in);
1569                                 delete $self->{remotecmd};
1570                         } else {
1571                                 $self->send_rcmd_reply($main::mycall, $fromnode, $user, "sorry...!");
1572                         }
1573                 } else {
1574                         $self->send_rcmd_reply($main::mycall, $fromnode, $user, "your attempt is logged, Tut tut tut...!");
1575                 }
1576         } else {
1577                 my $ref = DXUser->get_current($tonode);
1578                 if ($ref && $ref->is_clx) {
1579                         $self->route($tonode, pc84($fromnode, $tonode, $user, $cmd));
1580                 } else {
1581                         $self->route($tonode, pc34($fromnode, $tonode, $cmd));
1582                 }
1583         }
1584 }
1585
1586 sub process_rcmd_reply
1587 {
1588         my ($self, $tonode, $fromnode, $user, $line) = @_;
1589         if ($tonode eq $main::mycall) {
1590                 my $s = $rcmds{$fromnode};
1591                 if ($s) {
1592                         my $dxchan = DXChannel->get($s->{call});
1593                         my $ref = DXChannel->get($user) || $dxchan;
1594                         if ($ref->{call} eq $main::mycall) {
1595                                 $ref = DXChannel->get($main::myalias) || $ref;
1596                         }
1597                         $ref->send($line) if $ref;
1598                         delete $rcmds{$fromnode} if !$dxchan;
1599                 } else {
1600                         # send unsolicited ones to the sysop
1601                         my $dxchan = DXChannel->get($main::myalias);
1602                         $dxchan->send($line) if $dxchan;
1603                 }
1604         } else {
1605                 my $ref = DXUser->get_current($tonode);
1606                 if ($ref && $ref->is_clx) {
1607                         $self->route($tonode, pc85($fromnode, $tonode, $user, $line));
1608                 } else {
1609                         $self->route($tonode, pc35($fromnode, $tonode, $line));
1610                 }
1611         }
1612 }
1613
1614 sub send_rcmd_reply
1615 {
1616         my $self = shift;
1617         my $tonode = shift;
1618         my $fromnode = shift;
1619         my $user = shift;
1620         while (@_) {
1621                 my $line = shift;
1622                 $line =~ s/\s*$//;
1623                 Log('rcmd', 'out', $fromnode, $line);
1624                 if ($self->is_clx) {
1625                         $self->send(pc85($main::mycall, $fromnode, $user, "$main::mycall:$line"));
1626                 } else {
1627                         $self->send(pc35($main::mycall, $fromnode, "$main::mycall:$line"));
1628                 }
1629         }
1630 }
1631
1632 # add a rcmd request to the rcmd queues
1633 sub addrcmd
1634 {
1635         my ($self, $to, $cmd) = @_;
1636
1637         my $r = {};
1638         $r->{call} = $self->{call};
1639         $r->{t} = $main::systime;
1640         $r->{cmd} = $cmd;
1641         $rcmds{$to} = $r;
1642
1643         my $ref = Route::Node::get($to);
1644         my $dxchan = $ref->dxchan;
1645         if ($dxchan && $dxchan->is_clx) {
1646                 route(undef, $to, pc84($main::mycall, $to, $self->{call}, $cmd));
1647         } else {
1648                 route(undef, $to, pc34($main::mycall, $to, $cmd));
1649         }
1650 }
1651
1652 sub disconnect
1653 {
1654         my $self = shift;
1655         my $pc39flag = shift;
1656         my $call = $self->call;
1657
1658         unless ($pc39flag && $pc39flag == 1) {
1659                 $self->send_now("D", DXProt::pc39($main::mycall, $self->msg('disc1', "System Op")));
1660         }
1661
1662         # do routing stuff
1663         my $node = Route::Node::get($call);
1664         my @rout;
1665         if ($node) {
1666                 @rout = $node->del_nodes;    # at the next level
1667                 @rout = $node->del($main::routeroot);
1668         }
1669
1670         # unbusy and stop and outgoing mail
1671         my $mref = DXMsg::get_busy($call);
1672         $mref->stop_msg($call) if $mref;
1673
1674         # broadcast to all other nodes that all the nodes connected to via me are gone
1675         unless ($pc39flag && $pc39flag == 2) {
1676                 $self->route_pc21(@rout) if @rout;
1677         }
1678
1679         # remove outstanding pings
1680         delete $pings{$call};
1681
1682         # I was the last node visited
1683     $self->user->node($main::mycall);
1684
1685         # send info to all logged in thingies
1686         $self->tell_login('logoutn');
1687
1688         Log('DXProt', $call . " Disconnected");
1689
1690         $self->SUPER::disconnect;
1691 }
1692
1693
1694 #
1695 # send a talk message to this thingy
1696 #
1697 sub talk
1698 {
1699         my ($self, $from, $to, $via, $line) = @_;
1700
1701         $line =~ s/\^/\\5E/g;                   # remove any ^ characters
1702         $self->send(DXProt::pc10($from, $to, $via, $line));
1703         Log('talk', $self->call, $from, $via?$via:$main::mycall, $line);
1704 }
1705
1706 # send it if it isn't the except list and isn't isolated and still has a hop count
1707 # taking into account filtering and so on
1708 sub send_route
1709 {
1710         my $self = shift;
1711         my $generate = shift;
1712         my $no = shift;     # the no of things to filter on
1713         my $routeit;
1714         my ($filter, $hops);
1715         my @rin;
1716
1717         for (; @_ && $no; $no--) {
1718                 my $r = shift;
1719
1720                 if ($self->{routefilter}) {
1721                         $filter = undef;
1722                         if ($r) {
1723                                 ($filter, $hops) = $self->{routefilter}->it($self->{call}, $self->{dxcc}, $self->{itu}, $self->{cq}, $r->call, $r->dxcc, $r->itu, $r->cq);
1724                                 if ($filter) {
1725                                         push @rin, $r;
1726                                 } else {
1727                                         dbg("DXPROT: $self->{call}/" . $r->call . " rejected by output filter") if isdbg('chanerr');
1728                                 }
1729                         } else {
1730                                 dbg("was sent a null value") if isdbg('chanerr');
1731                         }
1732                 } else {
1733                         push @rin, $r;
1734                 }
1735         }
1736         if (@rin) {
1737                 foreach my $line (&$generate(@rin, @_)) {
1738                         if ($hops) {
1739                                 $routeit = $line;
1740                                 $routeit =~ s/\^H\d+\^\~$/\^H$hops\^\~/;
1741                         } else {
1742                                 $routeit = adjust_hops($self, $line);  # adjust its hop count by node name
1743                                 next unless $routeit;
1744                         }
1745                         $self->send($routeit) if $self->{routefilter} || !$self->{isolate};
1746                 }
1747         }
1748 }
1749
1750 sub broadcast_route
1751 {
1752         my $self = shift;
1753         my $generate = shift;
1754         my @dxchan = DXChannel::get_all_nodes();
1755         my $dxchan;
1756         my $line;
1757
1758         foreach $dxchan (@dxchan) {
1759                 next if $dxchan == $self;
1760                 next if $dxchan == $me;
1761                 if ($dxchan->{routefilter} || !$self->{isolate}) {
1762                         $dxchan->send_route($generate, @_)
1763                 } else {
1764                         dbg('DXPROT: isolated') if isdbg('chanerr');
1765                 }
1766         }
1767 }
1768
1769 sub route_pc16
1770 {
1771         my $self = shift;
1772         broadcast_route($self, \&pc16, 1, @_);
1773 }
1774
1775 sub route_pc17
1776 {
1777         my $self = shift;
1778         broadcast_route($self, \&pc17, 1, @_);
1779 }
1780
1781 sub route_pc19
1782 {
1783         my $self = shift;
1784         broadcast_route($self, \&pc19, scalar @_, @_);
1785 }
1786
1787 sub route_pc21
1788 {
1789         my $self = shift;
1790         broadcast_route($self, \&pc21, scalar @_, @_);
1791 }
1792
1793 sub route_pc24
1794 {
1795         my $self = shift;
1796         broadcast_route($self, \&pc24, 1, @_);
1797 }
1798
1799 sub route_pc41
1800 {
1801         my $self = shift;
1802         broadcast_route($self, \&pc41, 1, @_);
1803 }
1804
1805 sub route_pc50
1806 {
1807         my $self = shift;
1808         broadcast_route($self, \&pc50, 1, @_);
1809 }
1810
1811 sub in_filter_route
1812 {
1813         my $self = shift;
1814         my $r = shift;
1815         my ($filter, $hops) = (1, 1);
1816
1817         if ($self->{inroutefilter}) {
1818                 ($filter, $hops) = $self->{inroutefilter}->it($self->{call}, $self->{dxcc}, $self->{itu}, $self->{cq}, $r->call, $r->dxcc, $r->itu, $r->cq);
1819                 dbg("PCPROT: $self->{call}/" . $r->call . ' rejected by in_filter_route') if !$filter && isdbg('chanerr');
1820         }
1821         return $filter;
1822 }
1823
1824 sub eph_dup
1825 {
1826         my $s = shift;
1827
1828         # chop the end off
1829         $s =~ s/\^H\d\d?\^?\~?$//;
1830         return 1 if exists $eph{$s};
1831         $eph{$s} = $main::systime;
1832         return undef;
1833 }
1834
1835 sub eph_clean
1836 {
1837         my ($key, $val);
1838
1839         while (($key, $val) = each %eph) {
1840                 if ($main::systime - $val > 90) {
1841                         delete $eph{$key};
1842                 }
1843         }
1844 }
1845
1846 1;
1847 __END__