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 $field[-1] eq '~';
 275
 276 #       print join(',', @field), "\n";
 277
 278         # ignore any lines that don't start with PC
 279         return if !$field[0] =~ /^PC/;
 280
 281         # process PC frames
 282         my ($pcno) = $field[0] =~ /^PC(\d\d)/; # just get the number
 283         return unless $pcno;
 284         return if $pcno < 10 || $pcno > 99;
 285
 286         # check for and dump bad protocol messages
 287         my $n = check($pcno, @field);
 288         if ($n) {
 289                 dbg("PCPROT: bad field $n, dumped (" . parray($checklist[$pcno-10]) . ")") if isdbg('chanerr');
 290                 return;
 291         }
 292
 293         # local processing 1
 294         my $pcr;
 295         eval {
 296                 $pcr = Local::pcprot($self, $pcno, @field);
 297         };
 298 #       dbg("Local::pcprot error $@") if isdbg('local') if $@;
 299         return if $pcr;
 300
 301  SWITCH: {
 302                 if ($pcno == 10) {              # incoming talk
 303
 304                         # will we allow it at all?
 305                         if ($censorpc) {
 306                                 my @bad;
 307                                 if (@bad = BadWords::check($field[3])) {
 308                                         dbg("PCPROT: Bad words: @bad, dropped") if isdbg('chanerr');
 309                                         return;
 310                                 }
 311                         }
 312
 313                         # is it for me or one of mine?
 314                         my ($to, $via, $call, $dxchan);
 315                         if ($field[5] gt ' ') {
 316                                 $call = $via = $field[2];
 317                                 $to = $field[5];
 318                         } else {
 319                                 $call = $to = $field[2];
 320                         }
 321                         $dxchan = DXChannel->get($call);
 322                         if ($dxchan && $dxchan->is_user) {
 323                                 $field[3] =~ s/\%5E/^/g;
 324                                 $dxchan->talk($field[1], $to, $via, $field[3]);
 325                         } else {
 326                                 $self->route($field[2], $line); # relay it on its way
 327                         }
 328                         return;
 329                 }
 330
 331                 if ($pcno == 11 || $pcno == 26) { # dx spot
 332
 333                         # route 'foreign' pc26s
 334                         if ($pcno == 26) {
 335                                 if ($field[7] ne $main::mycall) {
 336                                         $self->route($field[7], $line);
 337                                         return;
 338                                 }
 339                         }
 340
 341                         # if this is a 'nodx' node then ignore it
 342                         if ($badnode->in($field[7])) {
 343                                 dbg("PCPROT: Bad Node, dropped") if isdbg('chanerr');
 344                                 return;
 345                         }
 346
 347                         # if this is a 'bad spotter' user then ignore it
 348                         if ($badspotter->in($field[6])) {
 349                                 dbg("PCPROT: Bad Spotter, dropped") if isdbg('chanerr');
 350                                 return;
 351                         }
 352
 353                         # convert the date to a unix date
 354                         my $d = cltounix($field[3], $field[4]);
 355                         # bang out (and don't pass on) if date is invalid or the spot is too old (or too young)
 356                         if (!$d || ($pcno == 11 && ($d < $main::systime - $pc11_max_age || $d > $main::systime + 900))) {
 357                                 dbg("PCPROT: Spot ignored, invalid date or out of range ($field[3] $field[4])\n") if isdbg('chanerr');
 358                                 return;
 359                         }
 360
 361                         # is it 'baddx'
 362                         if ($baddx->in($field[2])) {
 363                                 dbg("PCPROT: Bad DX spot, ignored") if isdbg('chanerr');
 364                                 return;
 365                         }
 366
 367                         # do some de-duping
 368                         $field[5] =~ s/^\s+//;      # take any leading blanks off
 369                         $field[2] = unpad($field[2]);   # take off leading and trailing blanks from spotted callsign
 370                         if ($field[2] =~ /BUST\w*$/) {
 371                                 dbg("PCPROT: useless 'BUSTED' spot") if isdbg('chanerr');
 372                                 return;
 373                         }
 374                         if (Spot::dup($field[1], $field[2], $d, $field[5])) {
 375                                 dbg("PCPROT: Duplicate Spot ignored\n") if isdbg('chanerr');
 376                                 return;
 377                         }
 378                         if ($censorpc) {
 379                                 my @bad;
 380                                 if (@bad = BadWords::check($field[5])) {
 381                                         dbg("PCPROT: Bad words: @bad, dropped") if isdbg('chanerr');
 382                                         return;
 383                                 }
 384                         }
 385
 386                         my @spot = Spot::prepare($field[1], $field[2], $d, $field[5], $field[6], $field[7]);
 387                         # global spot filtering on INPUT
 388                         if ($self->{inspotsfilter}) {
 389                                 my ($filter, $hops) = $self->{inspotsfilter}->it(@spot);
 390                                 unless ($filter) {
 391                                         dbg("PCPROT: Rejected by filter") if isdbg('chanerr');
 392                                         return;
 393                                 }
 394                         }
 395
 396                         # add it
 397                         Spot::add(@spot);
 398
 399             #
 400                         # @spot at this point contains:-
 401             # freq, spotted call, time, text, spotter, spotted cc, spotters cc, orig node
 402                         # then  spotted itu, spotted cq, spotters itu, spotters cq
 403                         # you should be able to route on any of these
 404             #
 405
 406                         # fix up qra locators of known users
 407                         my $user = DXUser->get_current($spot[4]);
 408                         if ($user) {
 409                                 my $qra = $user->qra;
 410                                 unless ($qra && DXBearing::is_qra($qra)) {
 411                                         my $lat = $user->lat;
 412                                         my $long = $user->long;
 413                                         if (defined $lat && defined $long) {
 414                                                 $user->qra(DXBearing::lltoqra($lat, $long));
 415                                                 $user->put;
 416                                         }
 417                                 }
 418
 419                                 # send a remote command to a distant cluster if it is visible and there is no
 420                                 # qra locator and we havn't done it for a month.
 421
 422                                 unless ($user->qra) {
 423                                         my $node;
 424                                         my $to = $user->homenode;
 425                                         my $last = $user->lastoper || 0;
 426                                         if ($send_opernam && $main::systime > $last + $DXUser::lastoperinterval && $to && ($node = Route::Node::get($to)) ) {
 427                                                 my $cmd = "forward/opernam $spot[4]";
 428                                                 # send the rcmd but we aren't interested in the replies...
 429                                                 my $dxchan = $node->dxchan;
 430                                                 if ($dxchan && $dxchan->is_clx) {
 431                                                         route(undef, $to, pc84($main::mycall, $to, $main::mycall, $cmd));
 432                                                 } else {
 433                                                         route(undef, $to, pc34($main::mycall, $to, $cmd));
 434                                                 }
 435                                                 if ($to ne $field[7]) {
 436                                                         $to = $field[7];
 437                                                         $node = Route::Node::get($to);
 438                                                         if ($node) {
 439                                                                 $dxchan = $node->dxchan;
 440                                                                 if ($dxchan && $dxchan->is_clx) {
 441                                                                         route(undef, $to, pc84($main::mycall, $to, $main::mycall, $cmd));
 442                                                                 } else {
 443                                                                         route(undef, $to, pc34($main::mycall, $to, $cmd));
 444                                                                 }
 445                                                         }
 446                                                 }
 447                                                 $user->lastoper($main::systime);
 448                                                 $user->put;
 449                                         }
 450                                 }
 451                         }
 452
 453                         # local processing
 454                         my $r;
 455                         eval {
 456                                 $r = Local::spot($self, @spot);
 457                         };
 458 #                       dbg("Local::spot1 error $@") if isdbg('local') if $@;
 459                         return if $r;
 460
 461                         # DON'T be silly and send on PC26s!
 462                         return if $pcno == 26;
 463
 464                         # send out the filtered spots
 465                         send_dx_spot($self, $line, @spot) if @spot;
 466                         return;
 467                 }
 468
 469                 if ($pcno == 12) {              # announces
 470                         # announce duplicate checking
 471                         $field[3] =~ s/^\s+//;  # remove leading blanks
 472                         if (AnnTalk::dup($field[1], $field[2], $field[3])) {
 473                                 dbg("PCPROT: Duplicate Announce ignored") if isdbg('chanerr');
 474                                 return;
 475                         }
 476
 477                         if ($censorpc) {
 478                                 my @bad;
 479                                 if (@bad = BadWords::check($field[3])) {
 480                                         dbg("PCPROT: Bad words: @bad, dropped") if isdbg('chanerr');
 481                                         return;
 482                                 }
 483                         }
 484
 485                         if ($field[2] eq '*' || $field[2] eq $main::mycall) {
 486
 487                                 # global ann filtering on INPUT
 488                                 if ($self->{inannfilter}) {
 489                                         my ($ann_dxcc, $ann_itu, $ann_cq, $org_dxcc, $org_itu, $org_cq) = (0..0);
 490                                         my @dxcc = Prefix::extract($field[1]);
 491                                         if (@dxcc > 0) {
 492                                                 $ann_dxcc = $dxcc[1]->dxcc;
 493                                                 $ann_itu = $dxcc[1]->itu;
 494                                                 $ann_cq = $dxcc[1]->cq();
 495                                         }
 496                                         @dxcc = Prefix::extract($field[5]);
 497                                         if (@dxcc > 0) {
 498                                                 $org_dxcc = $dxcc[1]->dxcc;
 499                                                 $org_itu = $dxcc[1]->itu;
 500                                                 $org_cq = $dxcc[1]->cq();
 501                                         }
 502                                         my ($filter, $hops) = $self->{inannfilter}->it(@field[1..6], $self->{call},
 503                                                                                                         $ann_dxcc, $ann_itu, $ann_cq, $org_dxcc, $org_itu, $org_cq);
 504                                         unless ($filter) {
 505                                                 dbg("PCPROT: Rejected by filter") if isdbg('chanerr');
 506                                                 return;
 507                                         }
 508                                 }
 509
 510                                 # send it
 511                                 $self->send_announce($line, @field[1..6]);
 512                         } else {
 513                                 $self->route($field[2], $line);
 514                         }
 515
 516                         return;
 517                 }
 518
 519                 if ($pcno == 13) {
 520                         last SWITCH;
 521                 }
 522                 if ($pcno == 14) {
 523                         last SWITCH;
 524                 }
 525                 if ($pcno == 15) {
 526                         last SWITCH;
 527                 }
 528
 529                 if ($pcno == 16) {              # add a user
 530
 531                         # general checks
 532                         my $dxchan;
 533                         my $ncall = $field[1];
 534                         my $newline = "PC16^";
 535
 536                         if ($ncall eq $main::mycall) {
 537                                 dbg("PCPROT: trying to alter config on this node from outside!") if isdbg('chanerr');
 538                                 return;
 539                         }
 540                         $dxchan = DXChannel->get($ncall);
 541                         if ($dxchan && $dxchan ne $self) {
 542                                 dbg("PCPROT: PC16 from $self->{call} trying to alter locally connected $ncall, ignored!") if isdbg('chanerr');
 543                                 return;
 544                         }
 545                         my $parent = Route::Node::get($ncall);
 546                         unless ($parent) {
 547                                 dbg("PCPROT: Node $ncall not in config") if isdbg('chanerr');
 548                                 return;
 549                         }
 550
 551                         # input filter if required
 552                         return unless $self->in_filter_route($parent);
 553
 554                         my $i;
 555                         my @rout;
 556                         for ($i = 2; $i < $#field; $i++) {
 557                                 my ($call, $conf, $here) = $field[$i] =~ /^(\S+) (\S) (\d)/o;
 558                                 next unless $call && $conf && defined $here && is_callsign($call);
 559                                 $conf = $conf eq '*';
 560
 561                                 my $r = Route::User::get($call);
 562                                 my $flags = Route::here($here)|Route::conf($conf);
 563
 564                                 if ($r && $r->flags != $flags) {
 565                                         $r->flags($flags);
 566                                         push @rout, $r;
 567                                 } elsif (!$r) {
 568                                         push @rout, $parent->add_user($call, $flags);
 569                                 }
 570
 571                                 # add this station to the user database, if required
 572                                 $call =~ s/-\d+$//o;        # remove ssid for users
 573                                 my $user = DXUser->get_current($call);
 574                                 $user = DXUser->new($call) if !$user;
 575                                 $user->homenode($parent->call) if !$user->homenode;
 576                                 $user->node($parent->call);
 577                                 $user->lastin($main::systime) unless DXChannel->get($call);
 578                                 $user->put;
 579                         }
 580
 581
 582                         # queue up any messages (look for privates only)
 583                         DXMsg::queue_msg(1) if $self->state eq 'normal';
 584
 585                         $self->route_pc16($parent, @rout) if @rout;
 586                         return;
 587                 }
 588
 589                 if ($pcno == 17) {              # remove a user
 590                         my $dxchan;
 591                         my $ncall = $field[2];
 592                         my $ucall = $field[1];
 593                         if ($ncall eq $main::mycall) {
 594                                 dbg("PCPROT: trying to alter config on this node from outside!") if isdbg('chanerr');
 595                                 return;
 596                         }
 597                         $dxchan = DXChannel->get($ncall);
 598                         if ($dxchan && $dxchan ne $self) {
 599                                 dbg("PCPROT: PC17 from $self->{call} trying to alter locally connected $ncall, ignored!") if isdbg('chanerr');
 600                                 return;
 601                         }
 602                         my $parent = Route::Node::get($ncall);
 603                         unless ($parent) {
 604                                 dbg("PCPROT: Route::Node $ncall not in config") if isdbg('chanerr');
 605                                 return;
 606                         }
 607
 608                         # input filter if required
 609                         return unless $self->in_filter_route($parent);
 610
 611                         my @rout = $parent->del_user($ucall);
 612                         $self->route_pc17($parent, @rout) if @rout;
 613                         return;
 614                 }
 615
 616                 if ($pcno == 18) {              # link request
 617                         $self->state('init');
 618
 619                         # first clear out any nodes on this dxchannel
 620                         my $parent = Route::Node::get($self->{call});
 621                         my @rout = $parent->del_nodes;
 622                         $self->route_pc21(@rout, $parent);
 623                         $self->send_local_config();
 624                         $self->send(pc20());
 625                         return;             # we don't pass these on
 626                 }
 627
 628                 if ($pcno == 19) {              # incoming cluster list
 629                         my $i;
 630                         my $newline = "PC19^";
 631
 632                         # new routing list
 633                         my @rout;
 634                         my $parent = Route::Node::get($self->{call});
 635
 636                         # parse the PC19
 637                         for ($i = 1; $i < $#field-1; $i += 4) {
 638                                 my $here = $field[$i];
 639                                 my $call = uc $field[$i+1];
 640                                 my $conf = $field[$i+2];
 641                                 my $ver = $field[$i+3];
 642                                 next unless defined $here && defined $conf && is_callsign($call);
 643                                 # check for sane parameters
 644                                 $ver = 5000 if $ver eq '0000';
 645                                 next if $ver < 5000; # only works with version 5 software
 646                                 next if length $call < 3; # min 3 letter callsigns
 647
 648                                 # update it if required
 649                                 my $r = Route::Node::get($call);
 650                                 my $flags = Route::here($here)|Route::conf($conf);
 651                                 if ($parent->call eq $call && ($parent->version ne $ver || $parent->flags != $flags)) {
 652                                         $parent->version($ver);
 653                                         $parent->flags($flags);
 654                                         push @rout, $parent;
 655                                 } elsif ($r) {
 656                                         my $ar = $parent->add($r);
 657                                         push @rout, $ar if $ar;
 658                                         if ($r->version ne $ver || $r->flags != $flags) {
 659                                                 $r->version($ver);
 660                                                 $r->flags(Route::here($here)|Route::conf($conf));
 661                                                 push @rout, $r unless $ar;
 662                                         }
 663                                 } elsif ($parent->call ne $call) {
 664                                         next if $call eq $main::mycall || $call eq $self->{call};
 665
 666                                         my $new = Route::Node->new($call, $ver, Route::here($here)|Route::conf($conf));
 667                                     if ($self->in_filter_route($new)) {
 668                                                 $parent->add($new);
 669                                                 push @rout, $new;
 670                                         } else {
 671                                                 $new->del($parent);
 672                                         }
 673                                 }
 674
 675                                 # unbusy and stop and outgoing mail (ie if somehow we receive another PC19 without a disconnect)
 676                                 my $mref = DXMsg::get_busy($call);
 677                                 $mref->stop_msg($call) if $mref;
 678
 679                                 # add this station to the user database, if required (don't remove SSID from nodes)
 680                                 my $user = DXUser->get_current($call);
 681                                 if (!$user) {
 682                                         $user = DXUser->new($call);
 683                                         $user->sort('A');
 684                                         $user->priv(1);                   # I have relented and defaulted nodes
 685                                         $self->{priv} = 1;                # to user RCMDs allowed
 686                                         $user->homenode($call);
 687                                         $user->node($call);
 688                                 }
 689                                 $user->lastin($main::systime) unless DXChannel->get($call);
 690                                 $user->put;
 691                         }
 692
 693                         $self->route_pc19(@rout) if @rout;
 694                         return;
 695                 }
 696
 697                 if ($pcno == 20) {              # send local configuration
 698                         $self->send_local_config();
 699                         $self->send(pc22());
 700                         $self->state('normal');
 701                         return;
 702                 }
 703
 704                 if ($pcno == 21) {              # delete a cluster from the list
 705                         my $call = uc $field[1];
 706                         my @rout;
 707                         my $parent = Route::Node::get($self->{call});
 708                         unless ($parent) {
 709                                 dbg("PCPROT: Route::Node $call not in config") if isdbg('chanerr');
 710                                 return;
 711                         }
 712                         my $node = Route::Node::get($call);
 713                         if ($call ne $main::mycall) { # don't allow malicious buggers to disconnect me!
 714                                 if ($call eq $self->{call}) {
 715                                         dbg("PCPROT: Trying to disconnect myself with PC21") if isdbg('chanerr');
 716                                         return;
 717                                 }
 718
 719                                 if ($node) {
 720                                         # input filter it
 721                                         return unless $self->in_filter_route($node);
 722
 723                                         # routing objects
 724                                         push @rout, $node->del($parent);
 725                                 }
 726                         } else {
 727                                 dbg("PCPROT: I WILL _NOT_ be disconnected!") if isdbg('chanerr');
 728                                 return;
 729                         }
 730                         $self->route_pc21(@rout) if @rout;
 731                         return;
 732                 }
 733
 734                 if ($pcno == 22) {
 735                         $self->state('normal');
 736                         return;
 737                 }
 738
 739                 if ($pcno == 23 || $pcno == 27) { # WWV info
 740
 741                         # route 'foreign' pc27s
 742                         if ($pcno == 27) {
 743                                 if ($field[8] ne $main::mycall) {
 744                                         $self->route($field[8], $line);
 745                                         return;
 746                                 }
 747                         }
 748
 749                         # do some de-duping
 750                         my $d = cltounix($field[1], sprintf("%02d18Z", $field[2]));
 751                         my $sfi = unpad($field[3]);
 752                         my $k = unpad($field[4]);
 753                         my $i = unpad($field[5]);
 754                         my ($r) = $field[6] =~ /R=(\d+)/;
 755                         $r = 0 unless $r;
 756                         if (($pcno == 23 && $d < $main::systime - $pc23_max_age) || $d > $main::systime + 1500 || $field[2] < 0 || $field[2] > 23) {
 757                                 dbg("PCPROT: WWV Date ($field[1] $field[2]) out of range") if isdbg('chanerr');
 758                                 return;
 759                         }
 760                         if (Geomag::dup($d,$sfi,$k,$i,$field[6])) {
 761                                 dbg("PCPROT: Dup WWV Spot ignored\n") if isdbg('chanerr');
 762                                 return;
 763                         }
 764                         $field[7] =~ s/-\d+$//o;            # remove spotter's ssid
 765
 766                         my $wwv = Geomag::update($d, $field[2], $sfi, $k, $i, @field[6..8], $r);
 767
 768                         my $rep;
 769                         eval {
 770                                 $rep = Local::wwv($self, $field[1], $field[2], $sfi, $k, $i, @field[6..8], $r);
 771                         };
 772 #                       dbg("Local::wwv2 error $@") if isdbg('local') if $@;
 773                         return if $rep;
 774
 775                         # DON'T be silly and send on PC27s!
 776                         return if $pcno == 27;
 777
 778                         # broadcast to the eager world
 779                         send_wwv_spot($self, $line, $d, $field[2], $sfi, $k, $i, @field[6..8]);
 780                         return;
 781                 }
 782
 783                 if ($pcno == 24) {              # set here status
 784                         my $call = uc $field[1];
 785                         my $ref = Route::Node::get($call);
 786                         $ref->here($field[2]) if $ref;
 787                         $ref = Route::User::get($call);
 788                         $ref->here($field[2]) if $ref;
 789
 790                         # input filter if required
 791                         return unless $self->in_filter_route($ref);
 792
 793                         $self->route_pc24($ref, $field[3]) if $ref && !eph_dup($line);
 794                         return;
 795                 }
 796
 797                 if ($pcno == 25) {      # merge request
 798                         if ($field[1] ne $main::mycall) {
 799                                 $self->route($field[1], $line);
 800                                 return;
 801                         }
 802                         if ($field[2] eq $main::mycall) {
 803                                 dbg("PCPROT: Trying to merge to myself, ignored") if isdbg('chanerr');
 804                                 return;
 805                         }
 806
 807                         Log('DXProt', "Merge request for $field[3] spots and $field[4] WWV from $field[1]");
 808
 809                         # spots
 810                         if ($field[3] > 0) {
 811                                 my @in = reverse Spot::search(1, undef, undef, 0, $field[3]);
 812                                 my $in;
 813                                 foreach $in (@in) {
 814                                         $self->send(pc26(@{$in}[0..4], $field[2]));
 815                                 }
 816                         }
 817
 818                         # wwv
 819                         if ($field[4] > 0) {
 820                                 my @in = reverse Geomag::search(0, $field[4], time, 1);
 821                                 my $in;
 822                                 foreach $in (@in) {
 823                                         $self->send(pc27(@{$in}[0..5], $field[2]));
 824                                 }
 825                         }
 826                         return;
 827                 }
 828
 829                 if (($pcno >= 28 && $pcno <= 33) || $pcno == 40 || $pcno == 42 || $pcno == 49) { # mail/file handling
 830                         if ($pcno == 49 || $field[1] eq $main::mycall) {
 831                                 DXMsg::process($self, $line);
 832                         } else {
 833                                 $self->route($field[1], $line) unless $self->is_clx;
 834                         }
 835                         return;
 836                 }
 837
 838                 if ($pcno == 34 || $pcno == 36) { # remote commands (incoming)
 839                         if ($field[1] eq $main::mycall) {
 840                                 my $ref = DXUser->get_current($field[2]);
 841                                 my $cref = Route::Node::get($field[2]);
 842                                 Log('rcmd', 'in', $ref->{priv}, $field[2], $field[3]);
 843                                 unless (!$cref || !$ref || $cref->call ne $ref->homenode) {    # not allowed to relay RCMDS!
 844                                         if ($ref->{priv}) {     # you have to have SOME privilege, the commands have further filtering
 845                                                 $self->{remotecmd} = 1; # for the benefit of any command that needs to know
 846                                                 my $oldpriv = $self->{priv};
 847                                                 $self->{priv} = $ref->{priv};     # assume the user's privilege level
 848                                                 my @in = (DXCommandmode::run_cmd($self, $field[3]));
 849                                                 $self->{priv} = $oldpriv;
 850                                                 for (@in) {
 851                                                         s/\s*$//og;
 852                                                         $self->send(pc35($main::mycall, $field[2], "$main::mycall:$_"));
 853                                                         Log('rcmd', 'out', $field[2], $_);
 854                                                 }
 855                                                 delete $self->{remotecmd};
 856                                         } else {
 857                                                 $self->send(pc35($main::mycall, $field[2], "$main::mycall:sorry...!"));
 858                                         }
 859                                 } else {
 860                                         $self->send(pc35($main::mycall, $field[2], "$main::mycall:your attempt is logged, Tut tut tut...!"));
 861                                 }
 862                         } else {
 863                                 my $ref = DXUser->get_current($field[1]);
 864                                 if ($ref && $ref->is_clx) {
 865                                         $self->route($field[1], pc84($field[2], $field[1], $field[2], $field[3]));
 866                                 } else {
 867                                         $self->route($field[1], $line);
 868                                 }
 869                         }
 870                         return;
 871                 }
 872
 873                 if ($pcno == 35) {              # remote command replies
 874                         if ($field[1] eq $main::mycall) {
 875                                 my $s = $rcmds{$field[2]};
 876                                 if ($s) {
 877                                         my $dxchan = DXChannel->get($s->{call});
 878                                         $dxchan->send($field[3]) if $dxchan;
 879                                         delete $rcmds{$field[2]} if !$dxchan;
 880                                 } else {
 881                                         # send unsolicited ones to the sysop
 882                                         my $dxchan = DXChannel->get($main::myalias);
 883                                         $dxchan->send($field[3]) if $dxchan;
 884                                 }
 885                         } else {
 886                                 my $ref = DXUser->get_current($field[1]);
 887                                 if ($ref && $ref->is_clx) {
 888                                         $self->route($field[1], pc85($field[2], $field[1], $field[2], $field[3]));
 889                                 } else {
 890                                         $self->route($field[1], $line);
 891                                 }
 892                         }
 893                         return;
 894                 }
 895
 896                 # for pc 37 see 44 onwards
 897
 898                 if ($pcno == 38) {              # node connected list from neighbour
 899                         return;
 900                 }
 901
 902                 if ($pcno == 39) {              # incoming disconnect
 903                         if ($field[1] eq $self->{call}) {
 904                                 $self->disconnect(1);
 905                         } else {
 906                                 dbg("PCPROT: came in on wrong channel") if isdbg('chanerr');
 907                         }
 908                         return;
 909                 }
 910
 911                 if ($pcno == 41) {              # user info
 912                         # add this station to the user database, if required
 913                         my $call = $field[1];
 914                         my $user = DXUser->get_current($call);
 915                         $user = DXUser->new($call) if !$user;
 916
 917                         if ($field[2] == 1) {
 918                                 $user->name($field[3]);
 919                         } elsif ($field[2] == 2) {
 920                                 $user->qth($field[3]);
 921                         } elsif ($field[2] == 3) {
 922                                 my ($lat, $long) = DXBearing::stoll($field[3]);
 923                                 $user->lat($lat);
 924                                 $user->long($long);
 925                                 $user->qra(DXBearing::lltoqra($lat, $long)) unless $user->qra && DXBearing::is_qra($user->qra);
 926                         } elsif ($field[2] == 4) {
 927                                 $user->homenode($field[3]);
 928                         }
 929                         $user->lastoper($main::systime);   # to cut down on excessive for/opers being generated
 930                         $user->put;
 931                         my $ref = Route::get($call);
 932
 933                         # input filter if required
 934                         return unless $self->in_filter_route($ref);
 935
 936                         $self->route_pc41($ref, $call, $field[2], $field[3], $field[4]) if $ref && !eph_dup($line);
 937                         return;
 938                 }
 939
 940                 if ($pcno == 43) {
 941                         last SWITCH;
 942                 }
 943
 944                 if ($pcno == 37 || $pcno == 44 || $pcno == 45 || $pcno == 46 || $pcno == 47 || $pcno == 48) {
 945                         DXDb::process($self, $line);
 946                         return;
 947                 }
 948
 949                 if ($pcno == 50) {              # keep alive/user list
 950                         my $call = $field[1];
 951                         my $node = Route::Node::get($call);
 952                         if ($node) {
 953                                 return unless $node->call eq $self->{call};
 954                                 $node->usercount($field[2]);
 955
 956                                 # input filter if required
 957                                 return unless $self->in_filter_route($node);
 958
 959                                 $self->route_pc50($node, $field[2], $field[3]) unless eph_dup($line);
 960                         }
 961                         return;
 962                 }
 963
 964                 if ($pcno == 51) {              # incoming ping requests/answers
 965                         my $to = $field[1];
 966                         my $from = $field[2];
 967                         my $flag = $field[3];
 968
 969                         # is it for us?
 970                         if ($to eq $main::mycall) {
 971                                 if ($flag == 1) {
 972                                         $self->send(pc51($from, $to, '0'));
 973                                 } else {
 974                                         # it's a reply, look in the ping list for this one
 975                                         my $ref = $pings{$from};
 976                                         if ($ref) {
 977                                                 my $tochan =  DXChannel->get($from);
 978                                                 while (@$ref) {
 979                                                         my $r = shift @$ref;
 980                                                         my $dxchan = DXChannel->get($r->{call});
 981                                                         next unless $dxchan;
 982                                                         my $t = tv_interval($r->{t}, [ gettimeofday ]);
 983                                                         if ($dxchan->is_user) {
 984                                                                 my $s = sprintf "%.2f", $t;
 985                                                                 my $ave = sprintf "%.2f", $tochan ? ($tochan->{pingave} || $t) : $t;
 986                                                                 $dxchan->send($dxchan->msg('pingi', $from, $s, $ave))
 987                                                         } elsif ($dxchan->is_node) {
 988                                                                 if ($tochan) {
 989                                                                         $tochan->{nopings} = $tochan->user->nopings || 2; # pump up the timer
 990                                                                         push @{$tochan->{pingtime}}, $t;
 991                                                                         shift @{$tochan->{pingtime}} if @{$tochan->{pingtime}} > 6;
 992                                                                         my $st;
 993                                                                         for (@{$tochan->{pingtime}}) {
 994                                                                                 $st += $_;
 995                                                                         }
 996                                                                         $tochan->{pingave} = $st / @{$tochan->{pingtime}};
 997                                                                 }
 998                                                         }
 999                                                 }
1000                                         }
1001                                 }
1002                         } else {
1003                                 # route down an appropriate thingy
1004                                 $self->route($to, $line);
1005                         }
1006                         return;
1007                 }
1008
1009                 if ($pcno == 75) {              # dunno but route it
1010                         my $call = $field[1];
1011                         if ($call ne $main::mycall) {
1012                                 $self->route($call, $line);
1013                         }
1014                         return;
1015                 }
1016
1017                 if ($pcno == 73) {  # WCY broadcasts
1018                         my $call = $field[1];
1019
1020                         # do some de-duping
1021                         my $d = cltounix($call, sprintf("%02d18Z", $field[2]));
1022                         if (($pcno == 23 && $d < $main::systime - $pc23_max_age) || $d > $main::systime + 1500 || $field[2] < 0 || $field[2] > 23) {
1023                                 dbg("PCPROT: WCY Date ($call $field[2]) out of range") if isdbg('chanerr');
1024                                 return;
1025                         }
1026                         @field = map { unpad($_) } @field;
1027                         if (WCY::dup($d,@field[3..7])) {
1028                                 dbg("PCPROT: Dup WCY Spot ignored\n") if isdbg('chanerr');
1029                                 return;
1030                         }
1031
1032                         my $wcy = WCY::update($d, @field[2..12]);
1033
1034                         my $rep;
1035                         eval {
1036                                 $rep = Local::wwv($self, @field[1..12]);
1037                         };
1038                         # dbg("Local::wcy error $@") if isdbg('local') if $@;
1039                         return if $rep;
1040
1041                         # broadcast to the eager world
1042                         send_wcy_spot($self, $line, $d, @field[2..12]);
1043                         return;
1044                 }
1045
1046                 if ($pcno == 84) { # remote commands (incoming)
1047                         my $call = $field[1];
1048                         if ($call eq $main::mycall) {
1049                                 my $ref = DXUser->get_current($field[2]);
1050                                 my $cref = Route::Node::get($field[2]);
1051                                 Log('rcmd', 'in', $ref->{priv}, $field[2], $field[4]);
1052                                 unless ($field[4] =~ /rcmd/i || !$cref || !$ref || $cref->call ne $ref->homenode) {    # not allowed to relay RCMDS!
1053                                         if ($ref->{priv}) {     # you have to have SOME privilege, the commands have further filtering
1054                                                 $self->{remotecmd} = 1; # for the benefit of any command that needs to know
1055                                                 my $oldpriv = $self->{priv};
1056                                                 $self->{priv} = $ref->{priv};     # assume the user's privilege level
1057                                                 my @in = (DXCommandmode::run_cmd($self, $field[4]));
1058                                                 $self->{priv} = $oldpriv;
1059                                                 for (@in) {
1060                                                         s/\s*$//og;
1061                                                         $self->send(pc85($main::mycall, $field[2], $field[3], "$main::mycall:$_"));
1062                                                         Log('rcmd', 'out', $field[2], $_);
1063                                                 }
1064                                                 delete $self->{remotecmd};
1065                                         } else {
1066                                                 $self->send(pc85($main::mycall, $field[2], $field[3], "$main::mycall:sorry...!"));
1067                                         }
1068                                 } else {
1069                                         $self->send(pc85($main::mycall, $field[2], $field[3],"$main::mycall:your attempt is logged, Tut tut tut...!"));
1070                                 }
1071                         } else {
1072                                 my $ref = DXUser->get_current($call);
1073                                 if ($ref && $ref->is_clx) {
1074                                         $self->route($call, $line);
1075                                 } else {
1076                                         $self->route($call, pc34($field[2], $call, $field[4]));
1077                                 }
1078                         }
1079                         return;
1080                 }
1081
1082                 if ($pcno == 85) {              # remote command replies
1083                         my $call = $field[1];
1084                         if ($call eq $main::mycall) {
1085                                 my $dxchan = DXChannel->get($field[3]);
1086                                 if ($dxchan) {
1087                                         $dxchan->send($field[4]);
1088                                 } else {
1089                                         my $s = $rcmds{$field[2]};
1090                                         if ($s) {
1091                                                 $dxchan = DXChannel->get($s->{call});
1092                                                 $dxchan->send($field[4]) if $dxchan;
1093                                                 delete $rcmds{$field[2]} if !$dxchan;
1094                                         } else {
1095                                                 # send unsolicited ones to the sysop
1096                                                 my $dxchan = DXChannel->get($main::myalias);
1097                                                 $dxchan->send($field[4]) if $dxchan;
1098                                         }
1099                                 }
1100                         } else {
1101                                 my $ref = DXUser->get_current($call);
1102                                 if ($ref && $ref->is_clx) {
1103                                         $self->route($call, $line);
1104                                 } else {
1105                                         $self->route($call, pc35($field[2], $call, $field[4]));
1106                                 }
1107                         }
1108                         return;
1109                 }
1110         }
1111
1112         # if get here then rebroadcast the thing with its Hop count decremented (if
1113         # there is one). If it has a hop count and it decrements to zero then don't
1114         # rebroadcast it.
1115         #
1116         # NOTE - don't arrive here UNLESS YOU WANT this lump of protocol to be
1117         #        REBROADCAST!!!!
1118         #
1119
1120         if (eph_dup($line)) {
1121                 dbg("PCPROT: Ephemeral dup, dropped") if isdbg('chanerr');
1122         } else {
1123                 unless ($self->{isolate}) {
1124                         broadcast_ak1a($line, $self); # send it to everyone but me
1125                 }
1126         }
1127 }
1128
1129 #
1130 # This is called from inside the main cluster processing loop and is used
1131 # for despatching commands that are doing some long processing job
1132 #
1133 sub process
1134 {
1135         my $t = time;
1136         my @dxchan = DXChannel->get_all();
1137         my $dxchan;
1138
1139         foreach $dxchan (@dxchan) {
1140                 next unless $dxchan->is_node();
1141                 next if $dxchan == $me;
1142
1143                 # send a pc50 out on this channel
1144                 $dxchan->{pc50_t} = $main::systime unless exists $dxchan->{pc50_t};
1145                 if ($t >= $dxchan->{pc50_t} + $DXProt::pc50_interval) {
1146                         my $s = pc50($me, scalar DXChannel::get_all_users);
1147                         eph_dup($s);
1148                         $dxchan->send($s);
1149                         $dxchan->{pc50_t} = $t;
1150                 }
1151
1152                 # send a ping out on this channel
1153                 if ($dxchan->{pingint} && $t >= $dxchan->{pingint} + $dxchan->{lastping}) {
1154                         if ($dxchan->{nopings} <= 0) {
1155                                 $dxchan->disconnect;
1156                         } else {
1157                                 addping($main::mycall, $dxchan->call);
1158                                 $dxchan->{nopings} -= 1;
1159                                 $dxchan->{lastping} = $t;
1160                         }
1161                 }
1162         }
1163
1164         # every ten seconds
1165         if ($t - $last10 >= 10) {
1166                 # clean out ephemera
1167
1168                 eph_clean();
1169
1170                 $last10 = $t;
1171         }
1172
1173         if ($main::systime - 3600 > $last_hour) {
1174                 $last_hour = $main::systime;
1175         }
1176 }
1177
1178 #
1179 # finish up a pc context
1180 #
1181
1182 #
1183 # some active measures
1184 #
1185
1186 sub send_dx_spot
1187 {
1188         my $self = shift;
1189         my $line = shift;
1190         my @dxchan = DXChannel->get_all();
1191         my $dxchan;
1192
1193         # send it if it isn't the except list and isn't isolated and still has a hop count
1194         # taking into account filtering and so on
1195         foreach $dxchan (@dxchan) {
1196                 next if $dxchan == $me;
1197                 my $routeit;
1198                 my ($filter, $hops);
1199
1200                 if ($dxchan->{spotsfilter}) {
1201                     ($filter, $hops) = $dxchan->{spotsfilter}->it(@_, $self->{call} );
1202                         next unless $filter;
1203                 }
1204
1205                 if ($dxchan->is_node) {
1206                         next if $dxchan == $self;
1207                         if ($hops) {
1208                                 $routeit = $line;
1209                                 $routeit =~ s/\^H\d+\^\~$/\^H$hops\^\~/;
1210                         } else {
1211                                 $routeit = adjust_hops($dxchan, $line);  # adjust its hop count by node name
1212                                 next unless $routeit;
1213                         }
1214                         if ($filter) {
1215                                 $dxchan->send($routeit) if $routeit;
1216                         } else {
1217                                 $dxchan->send($routeit) unless $dxchan->{isolate} || $self->{isolate};
1218                         }
1219                 } elsif ($dxchan->is_user && $dxchan->{dx}) {
1220                         my $buf = Spot::formatb($dxchan->{user}->wantgrid, $_[0], $_[1], $_[2], $_[3], $_[4]);
1221                         $buf .= "\a\a" if $dxchan->{beep};
1222                         $buf =~ s/\%5E/^/g;
1223                         if ($dxchan->{state} eq 'prompt' || $dxchan->{state} eq 'talk') {
1224                                 $dxchan->send($buf);
1225                         } else {
1226                                 $dxchan->delay($buf);
1227                         }
1228                 }
1229         }
1230 }
1231
1232 sub send_wwv_spot
1233 {
1234         my $self = shift;
1235         my $line = shift;
1236         my @dxchan = DXChannel->get_all();
1237         my $dxchan;
1238         my ($wwv_dxcc, $wwv_itu, $wwv_cq, $org_dxcc, $org_itu, $org_cq) = (0..0);
1239         my @dxcc = Prefix::extract($_[7]);
1240         if (@dxcc > 0) {
1241                 $wwv_dxcc = $dxcc[1]->dxcc;
1242                 $wwv_itu = $dxcc[1]->itu;
1243                 $wwv_cq = $dxcc[1]->cq;
1244         }
1245         @dxcc = Prefix::extract($_[8]);
1246         if (@dxcc > 0) {
1247                 $org_dxcc = $dxcc[1]->dxcc;
1248                 $org_itu = $dxcc[1]->itu;
1249                 $org_cq = $dxcc[1]->cq;
1250         }
1251
1252         # send it if it isn't the except list and isn't isolated and still has a hop count
1253         # taking into account filtering and so on
1254         foreach $dxchan (@dxchan) {
1255                 next if $dxchan == $self;
1256                 next if $dxchan == $me;
1257                 my $routeit;
1258                 my ($filter, $hops);
1259
1260                 if ($dxchan->{wwvfilter}) {
1261                         ($filter, $hops) = $dxchan->{wwvfilter}->it(@_, $self->{call}, $wwv_dxcc, $wwv_itu, $wwv_cq, $org_dxcc, $org_itu, $org_cq);
1262                          next unless $filter;
1263                 }
1264                 if ($dxchan->is_node) {
1265                         if ($hops) {
1266                                 $routeit = $line;
1267                                 $routeit =~ s/\^H\d+\^\~$/\^H$hops\^\~/;
1268                         } else {
1269                                 $routeit = adjust_hops($dxchan, $line);  # adjust its hop count by node name
1270                                 next unless $routeit;
1271                         }
1272                         if ($filter) {
1273                                 $dxchan->send($routeit) if $routeit;
1274                         } else {
1275                                 $dxchan->send($routeit) unless $dxchan->{isolate} || $self->{isolate};
1276
1277                         }
1278                 } elsif ($dxchan->is_user && $dxchan->{wwv}) {
1279                         my $buf = "WWV de $_[6] <$_[1]>:   SFI=$_[2], A=$_[3], K=$_[4], $_[5]";
1280                         $buf .= "\a\a" if $dxchan->{beep};
1281                         if ($dxchan->{state} eq 'prompt' || $dxchan->{state} eq 'talk') {
1282                                 $dxchan->send($buf);
1283                         } else {
1284                                 $dxchan->delay($buf);
1285                         }
1286                 }
1287         }
1288 }
1289
1290 sub send_wcy_spot
1291 {
1292         my $self = shift;
1293         my $line = shift;
1294         my @dxchan = DXChannel->get_all();
1295         my $dxchan;
1296         my ($wcy_dxcc, $wcy_itu, $wcy_cq, $org_dxcc, $org_itu, $org_cq) = (0..0);
1297         my @dxcc = Prefix::extract($_[11]);
1298         if (@dxcc > 0) {
1299                 $wcy_dxcc = $dxcc[1]->dxcc;
1300                 $wcy_itu = $dxcc[1]->itu;
1301                 $wcy_cq = $dxcc[1]->cq;
1302         }
1303         @dxcc = Prefix::extract($_[12]);
1304         if (@dxcc > 0) {
1305                 $org_dxcc = $dxcc[1]->dxcc;
1306                 $org_itu = $dxcc[1]->itu;
1307                 $org_cq = $dxcc[1]->cq;
1308         }
1309
1310         # send it if it isn't the except list and isn't isolated and still has a hop count
1311         # taking into account filtering and so on
1312         foreach $dxchan (@dxchan) {
1313                 next if $dxchan == $me;
1314                 my $routeit;
1315                 my ($filter, $hops);
1316
1317                 if ($dxchan->{wcyfilter}) {
1318                         ($filter, $hops) = $dxchan->{wcyfilter}->it(@_, $self->{call}, $wcy_dxcc, $wcy_itu, $wcy_cq, $org_dxcc, $org_itu, $org_cq);
1319                          next unless $filter;
1320                 }
1321                 if ($dxchan->is_clx || $dxchan->is_spider || $dxchan->is_dxnet) {
1322                         if ($hops) {
1323                                 $routeit = $line;
1324                                 $routeit =~ s/\^H\d+\^\~$/\^H$hops\^\~/;
1325                         } else {
1326                                 $routeit = adjust_hops($dxchan, $line);  # adjust its hop count by node name
1327                                 next unless $routeit;
1328                         }
1329                         if ($filter) {
1330                                 $dxchan->send($routeit) if $routeit;
1331                         } else {
1332                                 $dxchan->send($routeit) unless $dxchan->{isolate} || $self->{isolate};
1333                         }
1334                 } elsif ($dxchan->is_user && $dxchan->{wcy}) {
1335                         my $buf = "WCY de $_[10] <$_[1]> : K=$_[4] expK=$_[5] A=$_[3] R=$_[6] SFI=$_[2] SA=$_[7] GMF=$_[8] Au=$_[9]";
1336                         $buf .= "\a\a" if $dxchan->{beep};
1337                         if ($dxchan->{state} eq 'prompt' || $dxchan->{state} eq 'talk') {
1338                                 $dxchan->send($buf);
1339                         } else {
1340                                 $dxchan->delay($buf);
1341                         }
1342                 }
1343         }
1344 }
1345
1346 # send an announce
1347 sub send_announce
1348 {
1349         my $self = shift;
1350         my $line = shift;
1351         my @dxchan = DXChannel->get_all();
1352         my $dxchan;
1353         my $text = unpad($_[2]);
1354         my $target;
1355         my $to = 'To ';
1356
1357         if ($_[3] eq '*') {     # sysops
1358                 $target = "SYSOP";
1359         } elsif ($_[3] gt ' ') { # speciality list handling
1360                 my ($name) = split /\./, $_[3];
1361                 $target = "$name"; # put the rest in later (if bothered)
1362         }
1363
1364         if ($_[5] eq '1') {
1365                 $target = "WX";
1366                 $to = '';
1367         }
1368         $target = "ALL" if !$target;
1369
1370         Log('ann', $target, $_[0], $text);
1371
1372         # obtain country codes etc
1373         my ($ann_dxcc, $ann_itu, $ann_cq, $org_dxcc, $org_itu, $org_cq) = (0..0);
1374         my @dxcc = Prefix::extract($_[0]);
1375         if (@dxcc > 0) {
1376                 $ann_dxcc = $dxcc[1]->dxcc;
1377                 $ann_itu = $dxcc[1]->itu;
1378                 $ann_cq = $dxcc[1]->cq;
1379         }
1380         @dxcc = Prefix::extract($_[4]);
1381         if (@dxcc > 0) {
1382                 $org_dxcc = $dxcc[1]->dxcc;
1383                 $org_itu = $dxcc[1]->itu;
1384                 $org_cq = $dxcc[1]->cq;
1385         }
1386
1387         # send it if it isn't the except list and isn't isolated and still has a hop count
1388         # taking into account filtering and so on
1389         foreach $dxchan (@dxchan) {
1390                 next if $dxchan == $self;
1391                 next if $dxchan == $me;
1392                 my $routeit;
1393                 my ($filter, $hops);
1394
1395                 if ($dxchan->{annfilter}) {
1396                         ($filter, $hops) = $dxchan->{annfilter}->it(@_, $self->{call}, $ann_dxcc, $ann_itu, $ann_cq, $org_dxcc, $org_itu, $org_cq);
1397                         next unless $filter;
1398                 }
1399                 if ($dxchan->is_node && $_[1] ne $main::mycall) {  # i.e not specifically routed to me
1400                         if ($hops) {
1401                                 $routeit = $line;
1402                                 $routeit =~ s/\^H\d+\^\~$/\^H$hops\^\~/;
1403                         } else {
1404                                 $routeit = adjust_hops($dxchan, $line);  # adjust its hop count by node name
1405                                 next unless $routeit;
1406                         }
1407                         if ($filter) {
1408                                 $dxchan->send($routeit) if $routeit;
1409                         } else {
1410                                 $dxchan->send($routeit) unless $dxchan->{isolate} || $self->{isolate};
1411
1412                         }
1413                 } elsif ($dxchan->is_user) {
1414                         unless ($dxchan->{ann}) {
1415                                 next if $_[0] ne $main::myalias && $_[0] ne $main::mycall;
1416                         }
1417                         next if $target eq 'SYSOP' && $dxchan->{priv} < 5;
1418                         my $buf = "$to$target de $_[0]: $text";
1419                         $buf =~ s/\%5E/^/g;
1420                         $buf .= "\a\a" if $dxchan->{beep};
1421                         if ($dxchan->{state} eq 'prompt' || $dxchan->{state} eq 'talk') {
1422                                 $dxchan->send($buf);
1423                         } else {
1424                                 $dxchan->delay($buf);
1425                         }
1426                 }
1427         }
1428 }
1429
1430 sub send_local_config
1431 {
1432         my $self = shift;
1433         my $n;
1434         my @nodes;
1435         my @localnodes;
1436         my @remotenodes;
1437
1438         dbg('DXProt::send_local_config') if isdbg('trace');
1439
1440         # send our nodes
1441         if ($self->{isolate}) {
1442                 @localnodes = ( $main::routeroot );
1443         } else {
1444                 # create a list of all the nodes that are not connected to this connection
1445                 # and are not themselves isolated, this to make sure that isolated nodes
1446         # don't appear outside of this node
1447                 my @dxchan = grep { $_->call ne $main::mycall && $_->call ne $self->{call} } DXChannel::get_all_nodes();
1448                 @localnodes = map { Route::Node::get($_->{call}) or die "connot find node $_->{call}" } @dxchan if @dxchan;
1449                 my @intcalls = map { $_->nodes } @localnodes if @localnodes;
1450                 my $ref = Route::Node::get($self->{call});
1451                 my @rnodes = $ref->nodes;
1452                 for my $n (@intcalls) {
1453                         push @remotenodes, Route::Node::get($n) unless grep $n eq $_, @rnodes;
1454                 }
1455                 unshift @localnodes, $main::routeroot;
1456         }
1457
1458         send_route($self, \&pc19, scalar(@localnodes)+scalar(@remotenodes), @localnodes, @remotenodes);
1459
1460         # get all the users connected on the above nodes and send them out
1461         foreach $n (@localnodes, @remotenodes) {
1462                 if ($n) {
1463                         send_route($self, \&pc16, 1, $n, map {my $r = Route::User::get($_); $r ? ($r) : ()} $n->users);
1464                 } else {
1465                         dbg("sent a null value") if isdbg('chanerr');
1466                 }
1467         }
1468 }
1469
1470 #
1471 # route a message down an appropriate interface for a callsign
1472 #
1473 # is called route(to, pcline);
1474 #
1475 sub route
1476 {
1477         my ($self, $call, $line) = @_;
1478
1479         if (ref $self && $call eq $self->{call}) {
1480                 dbg("PCPROT: Trying to route back to source, dropped") if isdbg('chanerr');
1481                 return;
1482         }
1483
1484         # always send it down the local interface if available
1485         my $dxchan = DXChannel->get($call);
1486         unless ($dxchan) {
1487                 my $cl = Route::Node::get($call);
1488                 $dxchan = $cl->dxchan if $cl;
1489                 if (ref $dxchan) {
1490                         if (ref $self && $dxchan eq $self) {
1491                                 dbg("PCPROT: Trying to route back to source, dropped") if isdbg('chanerr');
1492                                 return;
1493                         }
1494                 }
1495         }
1496         if ($dxchan) {
1497                 my $routeit = adjust_hops($dxchan, $line);   # adjust its hop count by node name
1498                 if ($routeit) {
1499                         $dxchan->send($routeit);
1500                 }
1501         } else {
1502                 dbg("PCPROT: No route available, dropped") if isdbg('chanerr');
1503         }
1504 }
1505
1506 # broadcast a message to all clusters taking into account isolation
1507 # [except those mentioned after buffer]
1508 sub broadcast_ak1a
1509 {
1510         my $s = shift;                          # the line to be rebroadcast
1511         my @except = @_;                        # to all channels EXCEPT these (dxchannel refs)
1512         my @dxchan = DXChannel::get_all_nodes();
1513         my $dxchan;
1514
1515         # send it if it isn't the except list and isn't isolated and still has a hop count
1516         foreach $dxchan (@dxchan) {
1517                 next if grep $dxchan == $_, @except;
1518                 next if $dxchan == $me;
1519
1520                 my $routeit = adjust_hops($dxchan, $s);      # adjust its hop count by node name
1521                 $dxchan->send($routeit) unless $dxchan->{isolate} || !$routeit;
1522         }
1523 }
1524
1525 # broadcast a message to all clusters ignoring isolation
1526 # [except those mentioned after buffer]
1527 sub broadcast_all_ak1a
1528 {
1529         my $s = shift;                          # the line to be rebroadcast
1530         my @except = @_;                        # to all channels EXCEPT these (dxchannel refs)
1531         my @dxchan = DXChannel::get_all_nodes();
1532         my $dxchan;
1533
1534         # send it if it isn't the except list and isn't isolated and still has a hop count
1535         foreach $dxchan (@dxchan) {
1536                 next if grep $dxchan == $_, @except;
1537                 next if $dxchan == $me;
1538
1539                 my $routeit = adjust_hops($dxchan, $s);      # adjust its hop count by node name
1540                 $dxchan->send($routeit);
1541         }
1542 }
1543
1544 # broadcast to all users
1545 # storing the spot or whatever until it is in a state to receive it
1546 sub broadcast_users
1547 {
1548         my $s = shift;                          # the line to be rebroadcast
1549         my $sort = shift;           # the type of transmission
1550         my $fref = shift;           # a reference to an object to filter on
1551         my @except = @_;                        # to all channels EXCEPT these (dxchannel refs)
1552         my @dxchan = DXChannel::get_all_users();
1553         my $dxchan;
1554         my @out;
1555
1556         foreach $dxchan (@dxchan) {
1557                 next if grep $dxchan == $_, @except;
1558                 push @out, $dxchan;
1559         }
1560         broadcast_list($s, $sort, $fref, @out);
1561 }
1562
1563 # broadcast to a list of users
1564 sub broadcast_list
1565 {
1566         my $s = shift;
1567         my $sort = shift;
1568         my $fref = shift;
1569         my $dxchan;
1570
1571         foreach $dxchan (@_) {
1572                 my $filter = 1;
1573                 next if $dxchan == $me;
1574
1575                 if ($sort eq 'dx') {
1576                     next unless $dxchan->{dx};
1577                         ($filter) = $dxchan->{spotsfilter}->it(@{$fref}) if ref $fref;
1578                         next unless $filter;
1579                 }
1580                 next if $sort eq 'ann' && !$dxchan->{ann} && $s !~ /^To\s+LOCAL\s+de\s+(?:$main::myalias|$main::mycall)/i;
1581                 next if $sort eq 'wwv' && !$dxchan->{wwv};
1582                 next if $sort eq 'wcy' && !$dxchan->{wcy};
1583                 next if $sort eq 'wx' && !$dxchan->{wx};
1584
1585                 $s =~ s/\a//og unless $dxchan->{beep};
1586
1587                 if ($dxchan->{state} eq 'prompt' || $dxchan->{state} eq 'talk') {
1588                         $dxchan->send($s);
1589                 } else {
1590                         $dxchan->delay($s);
1591                 }
1592         }
1593 }
1594
1595
1596 #
1597 # obtain the hops from the list for this callsign and pc no
1598 #
1599
1600 sub get_hops
1601 {
1602         my $pcno = shift;
1603         my $hops = $DXProt::hopcount{$pcno};
1604         $hops = $DXProt::def_hopcount if !$hops;
1605         return "H$hops";
1606 }
1607
1608 #
1609 # adjust the hop count on a per node basis using the user loadable
1610 # hop table if available or else decrement an existing one
1611 #
1612
1613 sub adjust_hops
1614 {
1615         my $self = shift;
1616         my $s = shift;
1617         my $call = $self->{call};
1618         my $hops;
1619
1620         if (($hops) = $s =~ /\^H(\d+)\^~?$/o) {
1621                 my ($pcno) = $s =~ /^PC(\d\d)/o;
1622                 confess "$call called adjust_hops with '$s'" unless $pcno;
1623                 my $ref = $nodehops{$call} if %nodehops;
1624                 if ($ref) {
1625                         my $newhops = $ref->{$pcno};
1626                         return "" if defined $newhops && $newhops == 0;
1627                         $newhops = $ref->{default} unless $newhops;
1628                         return "" if defined $newhops && $newhops == 0;
1629                         $newhops = $hops if !$newhops;
1630                         $s =~ s/\^H(\d+)(\^~?)$/\^H$newhops$2/ if $newhops;
1631                 } else {
1632                         # simply decrement it
1633                         $hops--;
1634                         return "" if !$hops;
1635                         $s =~ s/\^H(\d+)(\^~?)$/\^H$hops$2/ if $hops;
1636                 }
1637         }
1638         return $s;
1639 }
1640
1641 #
1642 # load hop tables
1643 #
1644 sub load_hops
1645 {
1646         my $self = shift;
1647         return $self->msg('lh1') unless -e "$main::data/hop_table.pl";
1648         do "$main::data/hop_table.pl";
1649         return $@ if $@;
1650         return 0;
1651 }
1652
1653
1654 # add a ping request to the ping queues
1655 sub addping
1656 {
1657         my ($from, $to) = @_;
1658         my $ref = $pings{$to} || [];
1659         my $r = {};
1660         $r->{call} = $from;
1661         $r->{t} = [ gettimeofday ];
1662         route(undef, $to, pc51($to, $main::mycall, 1));
1663         push @$ref, $r;
1664         $pings{$to} = $ref;
1665 }
1666
1667 # add a rcmd request to the rcmd queues
1668 sub addrcmd
1669 {
1670         my ($self, $to, $cmd) = @_;
1671
1672         my $r = {};
1673         $r->{call} = $self->{call};
1674         $r->{t} = $main::systime;
1675         $r->{cmd} = $cmd;
1676         $rcmds{$to} = $r;
1677
1678         my $ref = Route::Node::get($to);
1679         my $dxchan = $ref->dxchan;
1680     if ($dxchan && $dxchan->is_clx) {
1681                 route(undef, $to, pc84($main::mycall, $to, $self->{call}, $cmd));
1682         } else {
1683                 route(undef, $to, pc34($main::mycall, $to, $cmd));
1684         }
1685 }
1686
1687 sub disconnect
1688 {
1689         my $self = shift;
1690         my $pc39flag = shift;
1691         my $call = $self->call;
1692
1693         unless ($pc39flag && $pc39flag == 1) {
1694                 $self->send_now("D", DXProt::pc39($main::mycall, $self->msg('disc1', "System Op")));
1695         }
1696
1697         # do routing stuff
1698         my $node = Route::Node::get($call);
1699         my @rout;
1700         if ($node) {
1701                 @rout = $node->del_nodes;    # at the next level
1702                 @rout = $node->del($main::routeroot);
1703         }
1704
1705         # unbusy and stop and outgoing mail
1706         my $mref = DXMsg::get_busy($call);
1707         $mref->stop_msg($call) if $mref;
1708
1709         # broadcast to all other nodes that all the nodes connected to via me are gone
1710         unless ($pc39flag && $pc39flag == 2) {
1711                 $self->route_pc21(@rout) if @rout;
1712         }
1713
1714         # remove outstanding pings
1715         delete $pings{$call};
1716
1717         # I was the last node visited
1718     $self->user->node($main::mycall);
1719
1720         # send info to all logged in thingies
1721         $self->tell_login('logoutn');
1722
1723         Log('DXProt', $call . " Disconnected");
1724
1725         $self->SUPER::disconnect;
1726 }
1727
1728
1729 #
1730 # send a talk message to this thingy
1731 #
1732 sub talk
1733 {
1734         my ($self, $from, $to, $via, $line) = @_;
1735
1736         $line =~ s/\^/\\5E/g;                   # remove any ^ characters
1737         $self->send(DXProt::pc10($from, $to, $via, $line));
1738         Log('talk', $self->call, $from, $via?$via:$main::mycall, $line);
1739 }
1740
1741 # send it if it isn't the except list and isn't isolated and still has a hop count
1742 # taking into account filtering and so on
1743 sub send_route
1744 {
1745         my $self = shift;
1746         my $generate = shift;
1747         my $no = shift;     # the no of things to filter on
1748         my $routeit;
1749         my ($filter, $hops);
1750         my @rin;
1751
1752         for (; @_ && $no; $no--) {
1753                 my $r = shift;
1754
1755                 if ($self->{routefilter}) {
1756                         $filter = undef;
1757                         if ($r) {
1758                                 ($filter, $hops) = $self->{routefilter}->it($self->{call}, $self->{dxcc}, $self->{itu}, $self->{cq}, $r->call, $r->dxcc, $r->itu, $r->cq);
1759                                 if ($filter) {
1760                                         push @rin, $r;
1761                                 } else {
1762                                         dbg('DXPROT: Rejected by filter') if isdbg('chanerr');
1763                                 }
1764                         } else {
1765                                 dbg("was sent a null value") if isdbg('chanerr');
1766                         }
1767                 } else {
1768                         push @rin, $r;
1769                 }
1770         }
1771         if (@rin) {
1772                 foreach my $line (&$generate(@rin, @_)) {
1773                         if ($hops) {
1774                                 $routeit = $line;
1775                                 $routeit =~ s/\^H\d+\^\~$/\^H$hops\^\~/;
1776                         } else {
1777                                 $routeit = adjust_hops($self, $line);  # adjust its hop count by node name
1778                                 next unless $routeit;
1779                         }
1780                         $self->send($routeit) if $self->{routefilter} || !$self->{isolate};
1781                 }
1782         }
1783 }
1784
1785 sub broadcast_route
1786 {
1787         my $self = shift;
1788         my $generate = shift;
1789         my @dxchan = DXChannel::get_all_nodes();
1790         my $dxchan;
1791         my $line;
1792
1793         foreach $dxchan (@dxchan) {
1794                 next if $dxchan == $self;
1795                 next if $dxchan == $me;
1796                 if ($self->{routefilter} || !$self->{isolate}) {
1797                         $dxchan->send_route($generate, @_)
1798                 } else {
1799                         dbg('DXPROT: isolated') if isdbg('chanerr');
1800                 }
1801         }
1802 }
1803
1804 sub route_pc16
1805 {
1806         my $self = shift;
1807         broadcast_route($self, \&pc16, 1, @_);
1808 }
1809
1810 sub route_pc17
1811 {
1812         my $self = shift;
1813         broadcast_route($self, \&pc17, 1, @_);
1814 }
1815
1816 sub route_pc19
1817 {
1818         my $self = shift;
1819         broadcast_route($self, \&pc19, scalar @_, @_);
1820 }
1821
1822 sub route_pc21
1823 {
1824         my $self = shift;
1825         broadcast_route($self, \&pc21, scalar @_, @_);
1826 }
1827
1828 sub route_pc24
1829 {
1830         my $self = shift;
1831         broadcast_route($self, \&pc24, 1, @_);
1832 }
1833
1834 sub route_pc41
1835 {
1836         my $self = shift;
1837         broadcast_route($self, \&pc41, 1, @_);
1838 }
1839
1840 sub route_pc50
1841 {
1842         my $self = shift;
1843         broadcast_route($self, \&pc50, 1, @_);
1844 }
1845
1846 sub in_filter_route
1847 {
1848         my $self = shift;
1849         my $r = shift;
1850         my ($filter, $hops) = (1, 1);
1851
1852         if ($self->{inroutefilter}) {
1853                 ($filter, $hops) = $self->{inroutefilter}->it($self->{call}, $self->{dxcc}, $self->{itu}, $self->{cq}, $r->call, $r->dxcc, $r->itu, $r->cq);
1854                 dbg('PCPROT: rejected by filter') if !$filter && isdbg('chanerr');
1855         }
1856         return $filter;
1857 }
1858
1859 sub eph_dup
1860 {
1861         my $s = shift;
1862
1863         # chop the end off
1864         $s =~ s/\^H\d\d?\^?~?$//;
1865         return 1 if exists $eph{$s};
1866         $eph{$s} = $main::systime;
1867         return undef;
1868 }
1869
1870 sub eph_clean
1871 {
1872         my ($key, $val);
1873
1874         while (($key, $val) = each %eph) {
1875                 if ($main::systime - $val > 90) {
1876                         delete $eph{$key};
1877                 }
1878         }
1879 }
1880
1881 1;
1882 __END__