perl/DXProt.pm

   1 #!/usr/bin/perl
   2 #
   3 # This module impliments the protocal mode for a dx cluster
   4 #
   5 # Copyright (c) 1998 Dirk Koopman G1TLH
   6 #
   7 # $Id$
   8 #
   9
  10 package DXProt;
  11
  12 @ISA = qw(DXChannel);
  13
  14 use DXUtil;
  15 use DXChannel;
  16 use DXUser;
  17 use DXM;
  18 use DXProtVars;
  19 use DXCommandmode;
  20 use DXLog;
  21 use Spot;
  22 use DXProtout;
  23 use DXDebug;
  24 use Filter;
  25 use Local;
  26 use DXDb;
  27 use AnnTalk;
  28 use Geomag;
  29 use WCY;
  30 use Time::HiRes qw(gettimeofday tv_interval);
  31 use BadWords;
  32 use DXHash;
  33 use Route;
  34 use Route::Node;
  35 use Script;
  36
  37 use strict;
  38
  39 use vars qw($VERSION $BRANCH);
  40 $VERSION = sprintf( "%d.%03d", q$Revision$ =~ /(\d+)\.(\d+)/ );
  41 $BRANCH = sprintf( "%d.%03d", q$Revision$ =~ /\d+\.\d+\.(\d+)\.(\d+)/ ) || 0;
  42 $main::build += $VERSION;
  43 $main::branch += $BRANCH;
  44
  45 use vars qw($pc11_max_age $pc23_max_age $last_pc50
  46                         $last_hour $last10 %eph  %pings %rcmds $ann_to_talk
  47                         %nodehops $baddx $badspotter $badnode $censorpc $rspfcheck
  48                         $allowzero $decode_dk0wcy $send_opernam @checklist);
  49
  50 $pc11_max_age = 1*3600;                 # the maximum age for an incoming 'real-time' pc11
  51 $pc23_max_age = 1*3600;                 # the maximum age for an incoming 'real-time' pc23
  52
  53 $last_hour = time;                              # last time I did an hourly periodic update
  54 %pings = ();                    # outstanding ping requests outbound
  55 %rcmds = ();                    # outstanding rcmd requests outbound
  56 %nodehops = ();                 # node specific hop control
  57 $censorpc = 1;                                  # Do a BadWords::check on text fields and reject things
  58                                                                 # loads of 'bad things'
  59 $baddx = new DXHash "baddx";
  60 $badspotter = new DXHash "badspotter";
  61 $badnode = new DXHash "badnode";
  62 $last10 = $last_pc50 = time;
  63 $ann_to_talk = 1;
  64 $rspfcheck = 1;
  65
  66 @checklist =
  67 (
  68  [ qw(c c m bp bc c) ],                 # pc10
  69  [ qw(f m d t m c c h) ],               # pc11
  70  [ qw(c bc m bp bm p h) ],              # pc12
  71  [ qw(c h) ],                                   #
  72  [ qw(c h) ],                                   #
  73  [ qw(c m h) ],                                 #
  74  undef ,                                                # pc16 has to be validated manually
  75  [ qw(c c h) ],                                 # pc17
  76  [ qw(m n) ],                                   # pc18
  77  undef ,                                                # pc19 has to be validated manually
  78  undef ,                                                # pc20 no validation
  79  [ qw(c m h) ],                                 # pc21
  80  undef ,                                                # pc22 no validation
  81  [ qw(d n n n n m c c h) ],             # pc23
  82  [ qw(c p h) ],                                 # pc24
  83  [ qw(c c n n) ],                               # pc25
  84  [ qw(f m d t m c c bc) ],              # pc26
  85  [ qw(d n n n n m c c bc) ],    # pc27
  86  [ qw(c c m c d t p m bp n p bp bc) ], # pc28
  87  [ qw(c c n m) ],                               # pc29
  88  [ qw(c c n) ],                                 # pc30
  89  [ qw(c c n) ],                                 # pc31
  90  [ qw(c c n) ],                                 # pc32
  91  [ qw(c c n) ],                                 # pc33
  92  [ qw(c c m) ],                                 # pc34
  93  [ qw(c c m) ],                                 # pc35
  94  [ qw(c c m) ],                                 # pc36
  95  [ qw(c c n m) ],                               # pc37
  96  undef,                                                 # pc38 not interested
  97  [ qw(c m) ],                                   # pc39
  98  [ qw(c c m p n) ],                             # pc40
  99  [ qw(c n m h) ],                               # pc41
 100  [ qw(c c n) ],                                 # pc42
 101  undef,                                                 # pc43 don't handle it
 102  [ qw(c c n m m c) ],                   # pc44
 103  [ qw(c c n m) ],                               # pc45
 104  [ qw(c c n) ],                                 # pc46
 105  undef,                                                 # pc47
 106  undef,                                                 # pc48
 107  [ qw(c m h) ],                                 # pc49
 108  [ qw(c n h) ],                                 # pc50
 109  [ qw(c c n) ],                                 # pc51
 110  undef,
 111  undef,
 112  undef,
 113  undef,
 114  undef,
 115  undef,
 116  undef,
 117  undef,
 118  undef,                                                 # pc60
 119  undef,
 120  undef,
 121  undef,
 122  undef,
 123  undef,
 124  undef,
 125  undef,
 126  undef,
 127  undef,
 128  undef,                                                 # pc70
 129  undef,
 130  undef,
 131  [ qw(d n n n n n n m m m c c h) ],     # pc73
 132  undef,
 133  undef,
 134  undef,
 135  undef,
 136  undef,
 137  undef,
 138  undef,                                                 # pc80
 139  undef,
 140  undef,
 141  undef,
 142  [ qw(c c c m) ],                               # pc84
 143  [ qw(c c c m) ],                               # pc85
 144 );
 145
 146 # use the entry in the check list to check the field list presented
 147 # return OK if line NOT in check list (for now)
 148 sub check
 149 {
 150         my $n = shift;
 151         $n -= 10;
 152         return 0 if $n < 0 || $n > @checklist;
 153         my $ref = $checklist[$n];
 154         return 0 unless ref $ref;
 155
 156         my $i;
 157         shift;    # not interested in the first field
 158         for ($i = 0; $i < @$ref; $i++) {
 159                 my ($blank, $act) = $$ref[$i] =~ /^(b?)(\w)$/;
 160                 return 0 unless $act;
 161                 next if $blank && $_[$i] =~ /^[ \*]$/;
 162                 if ($act eq 'c') {
 163                         return $i+1 unless is_callsign($_[$i]);
 164                 } elsif ($act eq 'm') {
 165                         return $i+1 unless is_pctext($_[$i]);
 166                 } elsif ($act eq 'p') {
 167                         return $i+1 unless is_pcflag($_[$i]);
 168                 } elsif ($act eq 'f') {
 169                         return $i+1 unless is_freq($_[$i]);
 170                 } elsif ($act eq 'n') {
 171                         return $i+1 unless $_[$i] =~ /^[\d ]+$/;
 172                 } elsif ($act eq 'h') {
 173                         return $i+1 unless $_[$i] =~ /^H\d\d?$/;
 174                 } elsif ($act eq 'd') {
 175                         return $i+1 unless $_[$i] =~ /^\s*\d+-\w\w\w-[12][90]\d\d$/;
 176                 } elsif ($act eq 't') {
 177                         return $i+1 unless $_[$i] =~ /^[012]\d[012345]\dZ$/;
 178                 }
 179         }
 180         return 0;
 181 }
 182
 183 sub init
 184 {
 185         my $user = DXUser->get($main::mycall);
 186         $DXProt::myprot_version += $main::version*100;
 187         $main::me = DXProt->new($main::mycall, 0, $user);
 188         $main::me->{here} = 1;
 189         $main::me->{state} = "indifferent";
 190         do "$main::data/hop_table.pl" if -e "$main::data/hop_table.pl";
 191         confess $@ if $@;
 192         $main::me->{sort} = 'S';    # S for spider
 193         $main::me->{priv} = 9;
 194         $main::me->{metric} = 0;
 195         $main::me->{pingave} = 0;
 196
 197 #       $Route::Node::me->adddxchan($main::me);
 198 }
 199
 200 #
 201 # obtain a new connection this is derived from dxchannel
 202 #
 203
 204 sub new
 205 {
 206         my $self = DXChannel::alloc(@_);
 207
 208         # add this node to the table, the values get filled in later
 209         my $pkg = shift;
 210         my $call = shift;
 211         $main::routeroot->add($call, '0000', Route::here(1)) if $call ne $main::mycall;
 212
 213         return $self;
 214 }
 215
 216 # this is how a pc connection starts (for an incoming connection)
 217 # issue a PC38 followed by a PC18, then wait for a PC20 (remembering
 218 # all the crap that comes between).
 219 sub start
 220 {
 221         my ($self, $line, $sort) = @_;
 222         my $call = $self->{call};
 223         my $user = $self->{user};
 224
 225         # log it
 226         my $host = $self->{conn}->{peerhost} || "unknown";
 227         Log('DXProt', "$call connected from $host");
 228
 229         # remember type of connection
 230         $self->{consort} = $line;
 231         $self->{outbound} = $sort eq 'O';
 232         my $priv = $user->priv;
 233         $priv = $user->priv(1) unless $priv;
 234         $self->{priv} = $priv;     # other clusters can always be 'normal' users
 235         $self->{lang} = $user->lang || 'en';
 236         $self->{isolate} = $user->{isolate};
 237         $self->{consort} = $line;       # save the connection type
 238         $self->{here} = 1;
 239         $self->{width} = 80;
 240
 241         # sort out registration
 242         $self->{registered} = 1;
 243
 244         # get the output filters
 245         $self->{spotsfilter} = Filter::read_in('spots', $call, 0) || Filter::read_in('spots', 'node_default', 0);
 246         $self->{wwvfilter} = Filter::read_in('wwv', $call, 0) || Filter::read_in('wwv', 'node_default', 0);
 247         $self->{wcyfilter} = Filter::read_in('wcy', $call, 0) || Filter::read_in('wcy', 'node_default', 0);
 248         $self->{annfilter} = Filter::read_in('ann', $call, 0) || Filter::read_in('ann', 'node_default', 0) ;
 249         $self->{routefilter} = Filter::read_in('route', $call, 0) || Filter::read_in('route', 'node_default', 0) unless $self->{isolate} ;
 250
 251
 252         # get the INPUT filters (these only pertain to Clusters)
 253         $self->{inspotsfilter} = Filter::read_in('spots', $call, 1) || Filter::read_in('spots', 'node_default', 1);
 254         $self->{inwwvfilter} = Filter::read_in('wwv', $call, 1) || Filter::read_in('wwv', 'node_default', 1);
 255         $self->{inwcyfilter} = Filter::read_in('wcy', $call, 1) || Filter::read_in('wcy', 'node_default', 1);
 256         $self->{inannfilter} = Filter::read_in('ann', $call, 1) || Filter::read_in('ann', 'node_default', 1);
 257         $self->{inroutefilter} = Filter::read_in('route', $call, 1) || Filter::read_in('route', 'node_default', 1) unless $self->{isolate};
 258
 259         # set unbuffered and no echo
 260         $self->send_now('B',"0");
 261         $self->send_now('E',"0");
 262         $self->conn->echo(0) if $self->conn->can('echo');
 263
 264         # ping neighbour node stuff
 265         my $ping = $user->pingint;
 266         $ping = 5*60 unless defined $ping;
 267         $self->{pingint} = $ping;
 268         $self->{nopings} = $user->nopings || 2;
 269         $self->{pingtime} = [ ];
 270         $self->{pingave} = 999;
 271         $self->{metric} ||= 100;
 272         $self->{lastping} = $main::systime;
 273
 274         # send initialisation string
 275         unless ($self->{outbound}) {
 276                 $self->send(pc18());
 277         }
 278
 279         $self->state('init');
 280         $self->{pc50_t} = $main::systime;
 281
 282         # send info to all logged in thingies
 283         $self->tell_login('loginn');
 284
 285         # run a script send the output to the debug file
 286         my $script = new Script(lc $call) || new Script('node_default');
 287         $script->run($self) if $script;
 288 }
 289
 290 #
 291 # This is the normal pcxx despatcher
 292 #
 293 sub normal
 294 {
 295         my ($self, $line) = @_;
 296         my @field = split /\^/, $line;
 297         return unless @field;
 298
 299         pop @field if $field[-1] eq '~';
 300
 301 #       print join(',', @field), "\n";
 302
 303
 304         # process PC frames, this will fail unless the frame starts PCnn
 305         my ($pcno) = $field[0] =~ /^PC(\d\d)/; # just get the number
 306         return unless $pcno;
 307         return if $pcno < 10 || $pcno > 99;
 308
 309         # check for and dump bad protocol messages
 310         my $n = check($pcno, @field);
 311         if ($n) {
 312                 dbg("PCPROT: bad field $n, dumped (" . parray($checklist[$pcno-10]) . ")") if isdbg('chanerr');
 313                 return;
 314         }
 315
 316         # local processing 1
 317         my $pcr;
 318         eval {
 319                 $pcr = Local::pcprot($self, $pcno, @field);
 320         };
 321 #       dbg("Local::pcprot error $@") if isdbg('local') if $@;
 322         return if $pcr;
 323
 324  SWITCH: {
 325                 if ($pcno == 10) {              # incoming talk
 326
 327                         # rsfp check
 328                         return if $rspfcheck and !$self->rspfcheck(0, $field[6], $field[1]);
 329
 330                         # will we allow it at all?
 331                         if ($censorpc) {
 332                                 my @bad;
 333                                 if (@bad = BadWords::check($field[3])) {
 334                                         dbg("PCPROT: Bad words: @bad, dropped") if isdbg('chanerr');
 335                                         return;
 336                                 }
 337                         }
 338
 339                         # is it for me or one of mine?
 340                         my ($from, $to, $via, $call, $dxchan);
 341                         $from = $field[1];
 342                         if ($field[5] gt ' ') {
 343                                 $via = $field[2];
 344                                 $to = $field[5];
 345                         } else {
 346                                 $to = $field[2];
 347                         }
 348
 349                         # if we are converting announces to talk is it a dup?
 350                         if ($ann_to_talk) {
 351                                 if (AnnTalk::is_talk_candidate($from, $field[3]) && AnnTalk::dup($from, $to, $field[3])) {
 352                                         dbg("DXPROT: Dupe talk from announce, dropped") if isdbg('chanerr');
 353                                         return;
 354                                 }
 355                         }
 356
 357                         # it is here and logged on
 358                         $dxchan = DXChannel->get($main::myalias) if $to eq $main::mycall;
 359                         $dxchan = DXChannel->get($to) unless $dxchan;
 360                         if ($dxchan && $dxchan->is_user) {
 361                                 $field[3] =~ s/\%5E/^/g;
 362                                 $dxchan->talk($from, $to, $via, $field[3]);
 363                                 return;
 364                         }
 365
 366                         # is it elsewhere, visible on the cluster via the to address?
 367                         # note: this discards the via unless the to address is on
 368                         # the via address
 369                         my ($ref, $vref);
 370                         if ($ref = Route::get($to)) {
 371                                 $vref = Route::Node::get($via) if $via;
 372                                 $vref = undef unless $vref && grep $to eq $_, $vref->users;
 373                                 $ref->dxchan->talk($from, $to, $vref ? $via : undef, $field[3], $field[6]);
 374                                 return;
 375                         }
 376
 377                         # not visible here, send a message of condolence
 378                         $vref = undef;
 379                         $ref = Route::get($from);
 380                         $vref = $ref = Route::Node::get($field[6]) unless $ref;
 381                         if ($ref) {
 382                                 $dxchan = $ref->dxchan;
 383                                 $dxchan->talk($main::mycall, $from, $vref ? $vref->call : undef, $dxchan->msg('talknh', $to) );
 384                         }
 385                         return;
 386                 }
 387
 388                 if ($pcno == 11 || $pcno == 26) { # dx spot
 389
 390                         # route 'foreign' pc26s
 391                         if ($pcno == 26) {
 392                                 if ($field[7] ne $main::mycall) {
 393                                         $self->route($field[7], $line);
 394                                         return;
 395                                 }
 396                         }
 397
 398                         # rsfp check
 399                         return if $rspfcheck and !$self->rspfcheck(1, $field[7], $field[6]);
 400
 401                         # if this is a 'nodx' node then ignore it
 402                         if ($badnode->in($field[7])) {
 403                                 dbg("PCPROT: Bad Node, dropped") if isdbg('chanerr');
 404                                 return;
 405                         }
 406
 407                         # if this is a 'bad spotter' user then ignore it
 408                         if ($badspotter->in($field[6])) {
 409                                 dbg("PCPROT: Bad Spotter, dropped") if isdbg('chanerr');
 410                                 return;
 411                         }
 412
 413                         # convert the date to a unix date
 414                         my $d = cltounix($field[3], $field[4]);
 415                         # bang out (and don't pass on) if date is invalid or the spot is too old (or too young)
 416                         if (!$d || ($pcno == 11 && ($d < $main::systime - $pc11_max_age || $d > $main::systime + 900))) {
 417                                 dbg("PCPROT: Spot ignored, invalid date or out of range ($field[3] $field[4])\n") if isdbg('chanerr');
 418                                 return;
 419                         }
 420
 421                         # is it 'baddx'
 422                         if ($baddx->in($field[2]) || BadWords::check($field[2]) || $field[2] =~ /COCK/) {
 423                                 dbg("PCPROT: Bad DX spot, ignored") if isdbg('chanerr');
 424                                 return;
 425                         }
 426
 427                         # do some de-duping
 428                         $field[5] =~ s/^\s+//;      # take any leading blanks off
 429                         $field[2] = unpad($field[2]);   # take off leading and trailing blanks from spotted callsign
 430                         if ($field[2] =~ /BUST\w*$/) {
 431                                 dbg("PCPROT: useless 'BUSTED' spot") if isdbg('chanerr');
 432                                 return;
 433                         }
 434                         if (Spot::dup($field[1], $field[2], $d, $field[5])) {
 435                                 dbg("PCPROT: Duplicate Spot ignored\n") if isdbg('chanerr');
 436                                 return;
 437                         }
 438                         if ($censorpc) {
 439                                 my @bad;
 440                                 if (@bad = BadWords::check($field[5])) {
 441                                         dbg("PCPROT: Bad words: @bad, dropped") if isdbg('chanerr');
 442                                         return;
 443                                 }
 444                         }
 445
 446                         my @spot = Spot::prepare($field[1], $field[2], $d, $field[5], $field[6], $field[7]);
 447                         # global spot filtering on INPUT
 448                         if ($self->{inspotsfilter}) {
 449                                 my ($filter, $hops) = $self->{inspotsfilter}->it(@spot);
 450                                 unless ($filter) {
 451                                         dbg("PCPROT: Rejected by input spot filter") if isdbg('chanerr');
 452                                         return;
 453                                 }
 454                         }
 455
 456                         # add it
 457                         Spot::add(@spot);
 458
 459             #
 460                         # @spot at this point contains:-
 461             # freq, spotted call, time, text, spotter, spotted cc, spotters cc, orig node
 462                         # then  spotted itu, spotted cq, spotters itu, spotters cq
 463                         # you should be able to route on any of these
 464             #
 465
 466                         # fix up qra locators of known users
 467                         my $user = DXUser->get_current($spot[4]);
 468                         if ($user) {
 469                                 my $qra = $user->qra;
 470                                 unless ($qra && is_qra($qra)) {
 471                                         my $lat = $user->lat;
 472                                         my $long = $user->long;
 473                                         if (defined $lat && defined $long) {
 474                                                 $user->qra(DXBearing::lltoqra($lat, $long));
 475                                                 $user->put;
 476                                         }
 477                                 }
 478
 479                                 # send a remote command to a distant cluster if it is visible and there is no
 480                                 # qra locator and we havn't done it for a month.
 481
 482                                 unless ($user->qra) {
 483                                         my $node;
 484                                         my $to = $user->homenode;
 485                                         my $last = $user->lastoper || 0;
 486                                         if ($send_opernam && $to && $to ne $main::mycall && $main::systime > $last + $DXUser::lastoperinterval && ($node = Route::Node::get($to)) ) {
 487                                                 my $cmd = "forward/opernam $spot[4]";
 488                                                 # send the rcmd but we aren't interested in the replies...
 489                                                 my $dxchan = $node->dxchan;
 490                                                 if ($dxchan && $dxchan->is_clx) {
 491                                                         route(undef, $to, pc84($main::mycall, $to, $main::mycall, $cmd));
 492                                                 } else {
 493                                                         route(undef, $to, pc34($main::mycall, $to, $cmd));
 494                                                 }
 495                                                 if ($to ne $field[7]) {
 496                                                         $to = $field[7];
 497                                                         $node = Route::Node::get($to);
 498                                                         if ($node) {
 499                                                                 $dxchan = $node->dxchan;
 500                                                                 if ($dxchan && $dxchan->is_clx) {
 501                                                                         route(undef, $to, pc84($main::mycall, $to, $main::mycall, $cmd));
 502                                                                 } else {
 503                                                                         route(undef, $to, pc34($main::mycall, $to, $cmd));
 504                                                                 }
 505                                                         }
 506                                                 }
 507                                                 $user->lastoper($main::systime);
 508                                                 $user->put;
 509                                         }
 510                                 }
 511                         }
 512
 513                         # local processing
 514                         my $r;
 515                         eval {
 516                                 $r = Local::spot($self, @spot);
 517                         };
 518 #                       dbg("Local::spot1 error $@") if isdbg('local') if $@;
 519                         return if $r;
 520
 521                         # DON'T be silly and send on PC26s!
 522                         return if $pcno == 26;
 523
 524                         # send out the filtered spots
 525                         send_dx_spot($self, $line, @spot) if @spot;
 526                         return;
 527                 }
 528
 529                 if ($pcno == 12) {              # announces
 530
 531                         return if $rspfcheck and !$self->rspfcheck(1, $field[5], $field[1]);
 532
 533                         # announce duplicate checking
 534                         $field[3] =~ s/^\s+//;  # remove leading blanks
 535                         if (AnnTalk::dup($field[1], $field[2], $field[3])) {
 536                                 dbg("PCPROT: Duplicate Announce ignored") if isdbg('chanerr');
 537                                 return;
 538                         }
 539
 540                         if ($censorpc) {
 541                                 my @bad;
 542                                 if (@bad = BadWords::check($field[3])) {
 543                                         dbg("PCPROT: Bad words: @bad, dropped") if isdbg('chanerr');
 544                                         return;
 545                                 }
 546                         }
 547
 548                         if ($field[2] eq '*' || $field[2] eq $main::mycall) {
 549
 550
 551                                 # here's a bit of fun, convert incoming ann with a callsign in the first word
 552                                 # or one saying 'to <call>' to a talk if we can route to the recipient
 553                                 if ($ann_to_talk) {
 554                                         my $call = AnnTalk::is_talk_candidate($field[1], $field[3]);
 555                                         if ($call) {
 556                                                 my $ref = Route::get($call);
 557                                                 if ($ref) {
 558                                                         my $dxchan = $ref->dxchan;
 559                                                         $dxchan->talk($field[1], $call, undef, $field[3], $field[5]) if $dxchan != $self;
 560                                                         return;
 561                                                 }
 562                                         }
 563                                 }
 564
 565                                 # send it
 566                                 $self->send_announce($line, @field[1..6]);
 567                         } else {
 568                                 $self->route($field[2], $line);
 569                         }
 570                         return;
 571                 }
 572
 573                 if ($pcno == 13) {
 574                         last SWITCH;
 575                 }
 576                 if ($pcno == 14) {
 577                         last SWITCH;
 578                 }
 579                 if ($pcno == 15) {
 580                         last SWITCH;
 581                 }
 582
 583                 if ($pcno == 16) {              # add a user
 584
 585                         if (eph_dup($line)) {
 586                                 dbg("PCPROT: dup PC16 detected") if isdbg('chanerr');
 587                                 return;
 588                         }
 589
 590                         # general checks
 591                         my $dxchan;
 592                         my $ncall = $field[1];
 593                         my $newline = "PC16^";
 594
 595                         if ($ncall eq $main::mycall) {
 596                                 dbg("PCPROT: trying to alter config on this node from outside!") if isdbg('chanerr');
 597                                 return;
 598                         }
 599                         my $parent = Route::Node::get($ncall);
 600                         unless ($parent) {
 601                                 dbg("PCPROT: Node $ncall not in config") if isdbg('chanerr');
 602                                 return;
 603                         }
 604                         $dxchan = $parent->dxchan;
 605                         if ($dxchan && $dxchan ne $self) {
 606                                 dbg("PCPROT: PC16 from $self->{call} trying to alter locally connected $ncall, ignored!") if isdbg('chanerr');
 607                                 return;
 608                         }
 609
 610                         # input filter if required
 611                         return unless $self->in_filter_route($parent);
 612
 613                         my $i;
 614                         my @rout;
 615                         for ($i = 2; $i < $#field; $i++) {
 616                                 my ($call, $conf, $here) = $field[$i] =~ /^(\S+) (\S) (\d)/o;
 617                                 next unless $call && $conf && defined $here && is_callsign($call);
 618                                 next if $call eq $main::mycall;
 619
 620                                 eph_del_regex("^PC17\^$call\^$ncall");
 621
 622                                 $conf = $conf eq '*';
 623
 624                                 # reject this if we think it is a node already
 625                                 my $r = Route::Node::get($call);
 626                                 my $u = DXUser->get_current($call) unless $r;
 627                                 if ($r || ($u && $u->is_node)) {
 628                                         dbg("PCPROT: $call is a node") if isdbg('chanerr');
 629                                         next;
 630                                 }
 631
 632                                 $r = Route::User::get($call);
 633                                 my $flags = Route::here($here)|Route::conf($conf);
 634
 635                                 if ($r) {
 636                                         if ($r->flags != $flags) {
 637                                                 $r->flags($flags);
 638                                                 push @rout, $r;
 639                                         }
 640                                         $r->addparent($parent);
 641                                 } else {
 642                                         push @rout, $parent->add_user($call, $flags);
 643                                 }
 644
 645                                 # add this station to the user database, if required
 646                                 $call =~ s/-\d+$//o;        # remove ssid for users
 647                                 my $user = DXUser->get_current($call);
 648                                 $user = DXUser->new($call) if !$user;
 649                                 $user->homenode($parent->call) if !$user->homenode;
 650                                 $user->node($parent->call);
 651                                 $user->lastin($main::systime) unless DXChannel->get($call);
 652                                 $user->put;
 653                         }
 654
 655                         # queue up any messages (look for privates only)
 656                         DXMsg::queue_msg(1) if $self->state eq 'normal';
 657
 658                         $self->route_pc16($parent, @rout) if @rout;
 659                         return;
 660                 }
 661
 662                 if ($pcno == 17) {              # remove a user
 663                         my $dxchan;
 664                         my $ncall = $field[2];
 665                         my $ucall = $field[1];
 666
 667                         if (eph_dup($line)) {
 668                                 dbg("PCPROT: dup PC17 detected") if isdbg('chanerr');
 669                                 return;
 670                         }
 671
 672                         eph_del_regex("^PC16.*$ncall.*$ucall");
 673
 674                         if ($ncall eq $main::mycall) {
 675                                 dbg("PCPROT: trying to alter config on this node from outside!") if isdbg('chanerr');
 676                                 return;
 677                         }
 678
 679                         my $uref = Route::User::get($ucall);
 680                         unless ($uref) {
 681                                 dbg("PCPROT: Route::User $ucall not in config") if isdbg('chanerr');
 682                                 return;
 683                         }
 684                         my $parent = Route::Node::get($ncall);
 685                         unless ($parent) {
 686                                 dbg("PCPROT: Route::Node $ncall not in config") if isdbg('chanerr');
 687                                 return;
 688                         }
 689
 690                         $dxchan = $parent->dxchan;
 691                         if ($dxchan && $dxchan ne $self) {
 692                                 dbg("PCPROT: PC17 from $self->{call} trying to alter locally connected $ncall, ignored!") if isdbg('chanerr');
 693                                 return;
 694                         }
 695
 696                         # input filter if required
 697                         return unless $self->in_filter_route($parent);
 698
 699                         my @rout = $parent->del_user($uref);
 700
 701                         $self->route_pc17($parent, @rout) if @rout;
 702                         return;
 703                 }
 704
 705                 if ($pcno == 18) {              # link request
 706                         $self->state('init');
 707
 708                         # first clear out any nodes on this dxchannel
 709                         my $parent = Route::Node::get($self->{call});
 710                         my @rout = $parent->del_nodes;
 711                         $self->route_pc21(@rout, $parent) if @rout;
 712                         $self->send_local_config();
 713                         $self->send(pc20());
 714                         return;             # we don't pass these on
 715                 }
 716
 717                 if ($pcno == 19) {              # incoming cluster list
 718                         my $i;
 719                         my $newline = "PC19^";
 720
 721                         if (eph_dup($line)) {
 722                                 dbg("PCPROT: dup PC19 detected") if isdbg('chanerr');
 723                                 return;
 724                         }
 725
 726                         # new routing list
 727                         my @rout;
 728                         my $parent = Route::Node::get($self->{call});
 729                         unless ($parent) {
 730                                 dbg("DXPROT: my parent $self->{call} has disappeared");
 731                                 $self->disconnect;
 732                                 return;
 733                         }
 734
 735                         # parse the PC19
 736                         for ($i = 1; $i < $#field-1; $i += 4) {
 737                                 my $here = $field[$i];
 738                                 my $call = uc $field[$i+1];
 739                                 my $conf = $field[$i+2];
 740                                 my $ver = $field[$i+3];
 741                                 next unless defined $here && defined $conf && is_callsign($call);
 742
 743                                 eph_del_regex("^PC(?:21\^$call|17\^[^\^]+\^$call)");
 744
 745                                 # check for sane parameters
 746                                 $ver = 5000 if $ver eq '0000';
 747                                 next if $ver < 5000; # only works with version 5 software
 748                                 next if length $call < 3; # min 3 letter callsigns
 749                                 next if $call eq $main::mycall;
 750
 751                                 # update it if required
 752                                 my $r = Route::Node::get($call);
 753                                 my $flags = Route::here($here)|Route::conf($conf);
 754                                 if ($r) {
 755                                         my $ar;
 756                                         if ($call ne $parent->call) {
 757                                                 if ($self->in_filter_route($r)) {
 758                                                         $ar = $parent->add($call, $ver, $flags);
 759                                                         push @rout, $ar if $ar;
 760                                                 } else {
 761                                                         next;
 762                                                 }
 763                                         }
 764                                         if ($r->version ne $ver || $r->flags != $flags) {
 765                                                 $r->version($ver);
 766                                                 $r->flags($flags);
 767                                                 push @rout, $r unless $ar;
 768                                         }
 769                                 } else {
 770                                         if ($call eq $self->{call}) {
 771                                                 dbg("DXPROT: my channel route for $call has disappeared");
 772                                                 next;
 773                                         };
 774
 775                                         my $new = Route->new($call);          # throw away
 776                                     if ($self->in_filter_route($new)) {
 777                                                 my $r = $parent->add($call, $ver, $flags);
 778                                                 push @rout, $r;
 779                                         } else {
 780                                                 next;
 781                                         }
 782                                 }
 783
 784                                 # unbusy and stop and outgoing mail (ie if somehow we receive another PC19 without a disconnect)
 785                                 my $mref = DXMsg::get_busy($call);
 786                                 $mref->stop_msg($call) if $mref;
 787
 788                                 # add this station to the user database, if required (don't remove SSID from nodes)
 789                                 my $user = DXUser->get_current($call);
 790                                 if (!$user) {
 791                                         $user = DXUser->new($call);
 792                                         $user->sort('A');
 793                                         $user->priv(1);                   # I have relented and defaulted nodes
 794                                         $user->lockout(1);
 795                                         $user->homenode($call);
 796                                         $user->node($call);
 797                                 }
 798                                 $user->lastin($main::systime) unless DXChannel->get($call);
 799                                 $user->put;
 800                         }
 801
 802
 803                         $self->route_pc19(@rout) if @rout;
 804                         return;
 805                 }
 806
 807                 if ($pcno == 20) {              # send local configuration
 808                         $self->send_local_config();
 809                         $self->send(pc22());
 810                         $self->state('normal');
 811                         $self->{lastping} = 0;
 812                         return;
 813                 }
 814
 815                 if ($pcno == 21) {              # delete a cluster from the list
 816                         my $call = uc $field[1];
 817
 818                         if (eph_dup($line)) {
 819                                 dbg("PCPROT: dup PC21 detected") if isdbg('chanerr');
 820                                 return;
 821                         }
 822
 823                         eph_del_regex("^PC1[79].*$call");
 824
 825                         my @rout;
 826                         my $parent = Route::Node::get($self->{call});
 827                         unless ($parent) {
 828                                 dbg("DXPROT: my parent $self->{call} has disappeared");
 829                                 $self->disconnect;
 830                                 return;
 831                         }
 832                         if ($call ne $main::mycall) { # don't allow malicious buggers to disconnect me!
 833                                 if ($call eq $self->{call}) {
 834                                         dbg("PCPROT: Trying to disconnect myself with PC21") if isdbg('chanerr');
 835                                         return;
 836                                 }
 837
 838                                 my $node = Route::Node::get($call);
 839                                 if ($node) {
 840
 841                                         my $dxchan = $node->dxchan;
 842                                         if ($dxchan && $dxchan ne $self) {
 843                                                 dbg("PCPROT: PC21 from $self->{call} trying to alter locally connected $call, ignored!") if isdbg('chanerr');
 844                                                 return;
 845                                         }
 846
 847                                         # input filter it
 848                                         return unless $self->in_filter_route($node);
 849
 850                                         # routing objects
 851                                         push @rout, $node->del($parent);
 852                                 }
 853                         } else {
 854                                 dbg("PCPROT: I WILL _NOT_ be disconnected!") if isdbg('chanerr');
 855                                 return;
 856                         }
 857
 858                         $self->route_pc21(@rout) if @rout;
 859                         return;
 860                 }
 861
 862                 if ($pcno == 22) {
 863                         $self->state('normal');
 864                         $self->{lastping} = 0;
 865                         return;
 866                 }
 867
 868                 if ($pcno == 23 || $pcno == 27) { # WWV info
 869
 870                         # route 'foreign' pc27s
 871                         if ($pcno == 27) {
 872                                 if ($field[8] ne $main::mycall) {
 873                                         $self->route($field[8], $line);
 874                                         return;
 875                                 }
 876                         }
 877
 878                         return if $rspfcheck and !$self->rspfcheck(1, $field[8], $field[7]);
 879
 880                         # do some de-duping
 881                         my $d = cltounix($field[1], sprintf("%02d18Z", $field[2]));
 882                         my $sfi = unpad($field[3]);
 883                         my $k = unpad($field[4]);
 884                         my $i = unpad($field[5]);
 885                         my ($r) = $field[6] =~ /R=(\d+)/;
 886                         $r = 0 unless $r;
 887                         if (($pcno == 23 && $d < $main::systime - $pc23_max_age) || $d > $main::systime + 1500 || $field[2] < 0 || $field[2] > 23) {
 888                                 dbg("PCPROT: WWV Date ($field[1] $field[2]) out of range") if isdbg('chanerr');
 889                                 return;
 890                         }
 891                         if (Geomag::dup($d,$sfi,$k,$i,$field[6])) {
 892                                 dbg("PCPROT: Dup WWV Spot ignored\n") if isdbg('chanerr');
 893                                 return;
 894                         }
 895                         $field[7] =~ s/-\d+$//o;            # remove spotter's ssid
 896
 897                         my $wwv = Geomag::update($d, $field[2], $sfi, $k, $i, @field[6..8], $r);
 898
 899                         my $rep;
 900                         eval {
 901                                 $rep = Local::wwv($self, $field[1], $field[2], $sfi, $k, $i, @field[6..8], $r);
 902                         };
 903 #                       dbg("Local::wwv2 error $@") if isdbg('local') if $@;
 904                         return if $rep;
 905
 906                         # DON'T be silly and send on PC27s!
 907                         return if $pcno == 27;
 908
 909                         # broadcast to the eager world
 910                         send_wwv_spot($self, $line, $d, $field[2], $sfi, $k, $i, @field[6..8]);
 911                         return;
 912                 }
 913
 914                 if ($pcno == 24) {              # set here status
 915                         my $call = uc $field[1];
 916                         my ($nref, $uref);
 917                         $nref = Route::Node::get($call);
 918                         $uref = Route::User::get($call);
 919                         return unless $nref || $uref;   # if we don't know where they are, it's pointless sending it on
 920
 921                         unless (eph_dup($line)) {
 922                                 $nref->here($field[2]) if $nref;
 923                                 $uref->here($field[2]) if $uref;
 924                                 my $ref = $nref || $uref;
 925                                 return unless $self->in_filter_route($ref);
 926                                 $self->route_pc24($ref, $field[3]);
 927                         }
 928                         return;
 929                 }
 930
 931                 if ($pcno == 25) {      # merge request
 932                         if ($field[1] ne $main::mycall) {
 933                                 $self->route($field[1], $line);
 934                                 return;
 935                         }
 936                         if ($field[2] eq $main::mycall) {
 937                                 dbg("PCPROT: Trying to merge to myself, ignored") if isdbg('chanerr');
 938                                 return;
 939                         }
 940
 941                         Log('DXProt', "Merge request for $field[3] spots and $field[4] WWV from $field[2]");
 942
 943                         # spots
 944                         if ($field[3] > 0) {
 945                                 my @in = reverse Spot::search(1, undef, undef, 0, $field[3]);
 946                                 my $in;
 947                                 foreach $in (@in) {
 948                                         $self->send(pc26(@{$in}[0..4], $field[2]));
 949                                 }
 950                         }
 951
 952                         # wwv
 953                         if ($field[4] > 0) {
 954                                 my @in = reverse Geomag::search(0, $field[4], time, 1);
 955                                 my $in;
 956                                 foreach $in (@in) {
 957                                         $self->send(pc27(@{$in}[0..5], $field[2]));
 958                                 }
 959                         }
 960                         return;
 961                 }
 962
 963                 if (($pcno >= 28 && $pcno <= 33) || $pcno == 40 || $pcno == 42 || $pcno == 49) { # mail/file handling
 964                         return if $pcno == 49 && eph_dup($line);
 965                         if ($pcno == 49 || $field[1] eq $main::mycall) {
 966                                 DXMsg::process($self, $line);
 967                         } else {
 968                                 $self->route($field[1], $line) unless $self->is_clx;
 969                         }
 970                         return;
 971                 }
 972
 973                 if ($pcno == 34 || $pcno == 36) { # remote commands (incoming)
 974                         $self->process_rcmd($field[1], $field[2], $field[2], $field[3]);
 975                         return;
 976                 }
 977
 978                 if ($pcno == 35) {              # remote command replies
 979                         $self->process_rcmd_reply($field[1], $field[2], $field[1], $field[3]);
 980                         return;
 981                 }
 982
 983                 # for pc 37 see 44 onwards
 984
 985                 if ($pcno == 38) {              # node connected list from neighbour
 986                         return;
 987                 }
 988
 989                 if ($pcno == 39) {              # incoming disconnect
 990                         if ($field[1] eq $self->{call}) {
 991                                 $self->disconnect(1);
 992                                 eph_del_regex("^PC(?:1[679]|21).*$field[1]");
 993                         } else {
 994                                 dbg("PCPROT: came in on wrong channel") if isdbg('chanerr');
 995                         }
 996                         return;
 997                 }
 998
 999                 if ($pcno == 41) {              # user info
1000                         my $call = $field[1];
1001
1002                         # input filter if required
1003 #                       my $ref = Route::get($call) || Route->new($call);
1004 #                       return unless $self->in_filter_route($ref);
1005
1006                         if ($field[3] eq $field[2] || $field[3] =~ /^\s*$/) {
1007                                 dbg('PCPROT: invalid value') if isdbg('chanerr');
1008                                 return;
1009                         }
1010
1011                         # add this station to the user database, if required
1012                         my $user = DXUser->get_current($call);
1013                         $user = DXUser->new($call) if !$user;
1014
1015                         if ($field[2] == 1) {
1016                                 $user->name($field[3]);
1017                         } elsif ($field[2] == 2) {
1018                                 $user->qth($field[3]);
1019                         } elsif ($field[2] == 3) {
1020                                 if (is_latlong($field[3])) {
1021                                         my ($lat, $long) = DXBearing::stoll($field[3]);
1022                                         $user->lat($lat);
1023                                         $user->long($long);
1024                                         $user->qra(DXBearing::lltoqra($lat, $long));
1025                                 } else {
1026                                         dbg('PCPROT: not a valid lat/long') if isdbg('chanerr');
1027                                         return;
1028                                 }
1029                         } elsif ($field[2] == 4) {
1030                                 $user->homenode($field[3]);
1031                         } elsif ($field[2] == 5) {
1032                                 if (is_qra($field[3])) {
1033                                         my ($lat, $long) = DXBearing::qratoll($field[3]);
1034                                         $user->lat($lat);
1035                                         $user->long($long);
1036                                         $user->qra($field[3]);
1037                                 } else {
1038                                         dbg('PCPROT: not a valid QRA locator') if isdbg('chanerr');
1039                                         return;
1040                                 }
1041                         }
1042                         $user->lastoper($main::systime);   # to cut down on excessive for/opers being generated
1043                         $user->put;
1044
1045 #  perhaps this IS what we want after all
1046 #                       $self->route_pc41($ref, $call, $field[2], $field[3], $field[4]);
1047 #                       return;
1048                 }
1049
1050                 if ($pcno == 43) {
1051                         last SWITCH;
1052                 }
1053
1054                 if ($pcno == 37 || $pcno == 44 || $pcno == 45 || $pcno == 46 || $pcno == 47 || $pcno == 48) {
1055                         DXDb::process($self, $line);
1056                         return;
1057                 }
1058
1059                 if ($pcno == 50) {              # keep alive/user list
1060                         my $call = $field[1];
1061                         my $node = Route::Node::get($call);
1062                         if ($node) {
1063                                 return unless $node->call eq $self->{call};
1064                                 $node->usercount($field[2]);
1065
1066                                 # input filter if required
1067                                 return unless $self->in_filter_route($node);
1068
1069                                 $self->route_pc50($node, $field[2], $field[3]) unless eph_dup($line);
1070                         }
1071                         return;
1072                 }
1073
1074                 if ($pcno == 51) {              # incoming ping requests/answers
1075                         my $to = $field[1];
1076                         my $from = $field[2];
1077                         my $flag = $field[3];
1078
1079
1080                         # is it for us?
1081                         if ($to eq $main::mycall) {
1082                                 if ($flag == 1) {
1083                                         $self->send(pc51($from, $to, '0'));
1084                                 } else {
1085                                         # it's a reply, look in the ping list for this one
1086                                         my $ref = $pings{$from};
1087                                         if ($ref) {
1088                                                 my $tochan =  DXChannel->get($from);
1089                                                 while (@$ref) {
1090                                                         my $r = shift @$ref;
1091                                                         my $dxchan = DXChannel->get($r->{call});
1092                                                         next unless $dxchan;
1093                                                         my $t = tv_interval($r->{t}, [ gettimeofday ]);
1094                                                         if ($dxchan->is_user) {
1095                                                                 my $s = sprintf "%.2f", $t;
1096                                                                 my $ave = sprintf "%.2f", $tochan ? ($tochan->{pingave} || $t) : $t;
1097                                                                 $dxchan->send($dxchan->msg('pingi', $from, $s, $ave))
1098                                                         } elsif ($dxchan->is_node) {
1099                                                                 if ($tochan) {
1100                                                                         my $nopings = $tochan->user->nopings || 2;
1101                                                                         push @{$tochan->{pingtime}}, $t;
1102                                                                         shift @{$tochan->{pingtime}} if @{$tochan->{pingtime}} > 6;
1103
1104                                                                         # cope with a missed ping, this means you must set the pingint large enough
1105                                                                         if ($t > $tochan->{pingint}  && $t < 2 * $tochan->{pingint} ) {
1106                                                                                 $t -= $tochan->{pingint};
1107                                                                         }
1108
1109                                                                         # calc smoothed RTT a la TCP
1110                                                                         if (@{$tochan->{pingtime}} == 1) {
1111                                                                                 $tochan->{pingave} = $t;
1112                                                                         } else {
1113                                                                                 $tochan->{pingave} = $tochan->{pingave} + (($t - $tochan->{pingave}) / 6);
1114                                                                         }
1115 #                                                                       my $st;
1116 #                                                                       for (@{$tochan->{pingtime}}) {
1117 #                                                                               $st += $_;
1118 #                                                                       }
1119 #                                                                       $tochan->{pingave} = $st / @{$tochan->{pingtime}};
1120                                                                         $tochan->{nopings} = $nopings; # pump up the timer
1121                                                                 }
1122                                                         }
1123                                                 }
1124                                         }
1125                                 }
1126                         } else {
1127                                 if (eph_dup($line)) {
1128                                         dbg("PCPROT: dup PC51 detected") if isdbg('chanerr');
1129                                         return;
1130                                 }
1131                                 # route down an appropriate thingy
1132                                 $self->route($to, $line);
1133                         }
1134                         return;
1135                 }
1136
1137                 if ($pcno == 75) {              # dunno but route it
1138                         my $call = $field[1];
1139                         if ($call ne $main::mycall) {
1140                                 $self->route($call, $line);
1141                         }
1142                         return;
1143                 }
1144
1145                 if ($pcno == 73) {  # WCY broadcasts
1146                         my $call = $field[1];
1147
1148                         # do some de-duping
1149                         my $d = cltounix($call, sprintf("%02d18Z", $field[2]));
1150                         if (($pcno == 23 && $d < $main::systime - $pc23_max_age) || $d > $main::systime + 1500 || $field[2] < 0 || $field[2] > 23) {
1151                                 dbg("PCPROT: WCY Date ($call $field[2]) out of range") if isdbg('chanerr');
1152                                 return;
1153                         }
1154                         @field = map { unpad($_) } @field;
1155                         if (WCY::dup($d,@field[3..7])) {
1156                                 dbg("PCPROT: Dup WCY Spot ignored\n") if isdbg('chanerr');
1157                                 return;
1158                         }
1159
1160                         my $wcy = WCY::update($d, @field[2..12]);
1161
1162                         my $rep;
1163                         eval {
1164                                 $rep = Local::wwv($self, @field[1..12]);
1165                         };
1166                         # dbg("Local::wcy error $@") if isdbg('local') if $@;
1167                         return if $rep;
1168
1169                         # broadcast to the eager world
1170                         send_wcy_spot($self, $line, $d, @field[2..12]);
1171                         return;
1172                 }
1173
1174                 if ($pcno == 84) { # remote commands (incoming)
1175                         $self->process_rcmd($field[1], $field[2], $field[3], $field[4]);
1176                         return;
1177                 }
1178
1179                 if ($pcno == 85) {              # remote command replies
1180                         $self->process_rcmd_reply($field[1], $field[2], $field[3], $field[4]);
1181
1182                         return;
1183                 }
1184         }
1185
1186         # if get here then rebroadcast the thing with its Hop count decremented (if
1187         # there is one). If it has a hop count and it decrements to zero then don't
1188         # rebroadcast it.
1189         #
1190         # NOTE - don't arrive here UNLESS YOU WANT this lump of protocol to be
1191         #        REBROADCAST!!!!
1192         #
1193
1194         if (eph_dup($line)) {
1195                 dbg("PCPROT: Ephemeral dup, dropped") if isdbg('chanerr');
1196         } else {
1197                 unless ($self->{isolate}) {
1198                         DXChannel::broadcast_nodes($line, $self); # send it to everyone but me
1199                 }
1200         }
1201 }
1202
1203 #
1204 # This is called from inside the main cluster processing loop and is used
1205 # for despatching commands that are doing some long processing job
1206 #
1207 sub process
1208 {
1209         my $t = time;
1210         my @dxchan = DXChannel->get_all();
1211         my $dxchan;
1212         my $pc50s;
1213
1214         # send out a pc50 on EVERY channel all at once
1215         if ($t >= $last_pc50 + $DXProt::pc50_interval) {
1216                 $pc50s = pc50($main::me, scalar DXChannel::get_all_users);
1217                 eph_dup($pc50s);
1218                 $last_pc50 = $t;
1219         }
1220
1221         foreach $dxchan (@dxchan) {
1222                 next unless $dxchan->is_node();
1223                 next if $dxchan == $main::me;
1224
1225                 # send the pc50
1226                 $dxchan->send($pc50s) if $pc50s;
1227
1228                 # send a ping out on this channel
1229                 if ($dxchan->{pingint} && $t >= $dxchan->{pingint} + $dxchan->{lastping}) {
1230                         if ($dxchan->{nopings} <= 0) {
1231                                 $dxchan->disconnect;
1232                         } else {
1233                                 addping($main::mycall, $dxchan->call);
1234                                 $dxchan->{nopings} -= 1;
1235                                 $dxchan->{lastping} = $t;
1236                         }
1237                 }
1238         }
1239
1240         # every ten seconds
1241         if ($t - $last10 >= 10) {
1242                 # clean out ephemera
1243
1244                 eph_clean();
1245
1246                 $last10 = $t;
1247         }
1248
1249         if ($main::systime - 3600 > $last_hour) {
1250                 $last_hour = $main::systime;
1251         }
1252 }
1253
1254 #
1255 # finish up a pc context
1256 #
1257
1258 #
1259 # some active measures
1260 #
1261
1262 sub send_dx_spot
1263 {
1264         my $self = shift;
1265         my $line = shift;
1266         my @dxchan = DXChannel->get_all();
1267         my $dxchan;
1268
1269         # send it if it isn't the except list and isn't isolated and still has a hop count
1270         # taking into account filtering and so on
1271         foreach $dxchan (@dxchan) {
1272                 next if $dxchan == $main::me;
1273                 next if $dxchan == $self && $self->is_node;
1274                 $dxchan->dx_spot($line, $self->{isolate}, @_, $self->{call});
1275         }
1276 }
1277
1278 sub dx_spot
1279 {
1280         my $self = shift;
1281         my $line = shift;
1282         my $isolate = shift;
1283         my ($filter, $hops);
1284
1285         if ($self->{spotsfilter}) {
1286                 ($filter, $hops) = $self->{spotsfilter}->it(@_);
1287                 return unless $filter;
1288         }
1289         send_prot_line($self, $filter, $hops, $isolate, $line);
1290 }
1291
1292 sub send_prot_line
1293 {
1294         my ($self, $filter, $hops, $isolate, $line) = @_;
1295         my $routeit;
1296
1297         if ($hops) {
1298                 $routeit = $line;
1299                 $routeit =~ s/\^H\d+\^\~$/\^H$hops\^\~/;
1300         } else {
1301                 $routeit = adjust_hops($self, $line);  # adjust its hop count by node name
1302                 return unless $routeit;
1303         }
1304         if ($filter) {
1305                 $self->send($routeit);
1306         } else {
1307                 $self->send($routeit) unless $self->{isolate} || $isolate;
1308         }
1309 }
1310
1311
1312 sub send_wwv_spot
1313 {
1314         my $self = shift;
1315         my $line = shift;
1316         my @dxchan = DXChannel->get_all();
1317         my $dxchan;
1318         my ($wwv_dxcc, $wwv_itu, $wwv_cq, $org_dxcc, $org_itu, $org_cq) = (0..0);
1319         my @dxcc = Prefix::extract($_[6]);
1320         if (@dxcc > 0) {
1321                 $wwv_dxcc = $dxcc[1]->dxcc;
1322                 $wwv_itu = $dxcc[1]->itu;
1323                 $wwv_cq = $dxcc[1]->cq;
1324         }
1325         @dxcc = Prefix::extract($_[7]);
1326         if (@dxcc > 0) {
1327                 $org_dxcc = $dxcc[1]->dxcc;
1328                 $org_itu = $dxcc[1]->itu;
1329                 $org_cq = $dxcc[1]->cq;
1330         }
1331
1332         # send it if it isn't the except list and isn't isolated and still has a hop count
1333         # taking into account filtering and so on
1334         foreach $dxchan (@dxchan) {
1335                 next if $dxchan == $main::me;
1336                 next if $dxchan == $self && $self->is_node;
1337                 my $routeit;
1338                 my ($filter, $hops);
1339
1340                 $dxchan->wwv($line, $self->{isolate}, @_, $self->{call}, $wwv_dxcc, $wwv_itu, $wwv_cq, $org_dxcc, $org_itu, $org_cq);
1341         }
1342
1343 }
1344
1345 sub wwv
1346 {
1347         my $self = shift;
1348         my $line = shift;
1349         my $isolate = shift;
1350         my ($filter, $hops);
1351
1352         if ($self->{wwvfilter}) {
1353                 ($filter, $hops) = $self->{wwvfilter}->it(@_);
1354                 return unless $filter;
1355         }
1356         send_prot_line($self, $filter, $hops, $isolate, $line)
1357 }
1358
1359 sub send_wcy_spot
1360 {
1361         my $self = shift;
1362         my $line = shift;
1363         my @dxchan = DXChannel->get_all();
1364         my $dxchan;
1365         my ($wcy_dxcc, $wcy_itu, $wcy_cq, $org_dxcc, $org_itu, $org_cq) = (0..0);
1366         my @dxcc = Prefix::extract($_[10]);
1367         if (@dxcc > 0) {
1368                 $wcy_dxcc = $dxcc[1]->dxcc;
1369                 $wcy_itu = $dxcc[1]->itu;
1370                 $wcy_cq = $dxcc[1]->cq;
1371         }
1372         @dxcc = Prefix::extract($_[11]);
1373         if (@dxcc > 0) {
1374                 $org_dxcc = $dxcc[1]->dxcc;
1375                 $org_itu = $dxcc[1]->itu;
1376                 $org_cq = $dxcc[1]->cq;
1377         }
1378
1379         # send it if it isn't the except list and isn't isolated and still has a hop count
1380         # taking into account filtering and so on
1381         foreach $dxchan (@dxchan) {
1382                 next if $dxchan == $main::me;
1383                 next if $dxchan == $self;
1384
1385                 $dxchan->wcy($line, $self->{isolate}, @_, $self->{call}, $wcy_dxcc, $wcy_itu, $wcy_cq, $org_dxcc, $org_itu, $org_cq);
1386         }
1387 }
1388
1389 sub wcy
1390 {
1391         my $self = shift;
1392         my $line = shift;
1393         my $isolate = shift;
1394         my ($filter, $hops);
1395
1396         if ($self->{wcyfilter}) {
1397                 ($filter, $hops) = $self->{wcyfilter}->it(@_);
1398                 return unless $filter;
1399         }
1400         send_prot_line($self, $filter, $hops, $isolate, $line) if $self->is_clx || $self->is_spider || $self->is_dxnet;
1401 }
1402
1403 # send an announce
1404 sub send_announce
1405 {
1406         my $self = shift;
1407         my $line = shift;
1408         my @dxchan = DXChannel->get_all();
1409         my $dxchan;
1410         my $target;
1411         my $to = 'To ';
1412         my $text = unpad($_[2]);
1413
1414         if ($_[3] eq '*') {     # sysops
1415                 $target = "SYSOP";
1416         } elsif ($_[3] gt ' ') { # speciality list handling
1417                 my ($name) = split /\./, $_[3];
1418                 $target = "$name"; # put the rest in later (if bothered)
1419         }
1420
1421         if ($_[5] eq '1') {
1422                 $target = "WX";
1423                 $to = '';
1424         }
1425         $target = "ALL" if !$target;
1426
1427
1428         # obtain country codes etc
1429         my ($ann_dxcc, $ann_itu, $ann_cq, $org_dxcc, $org_itu, $org_cq) = (0..0);
1430         my @dxcc = Prefix::extract($_[0]);
1431         if (@dxcc > 0) {
1432                 $ann_dxcc = $dxcc[1]->dxcc;
1433                 $ann_itu = $dxcc[1]->itu;
1434                 $ann_cq = $dxcc[1]->cq;
1435         }
1436         @dxcc = Prefix::extract($_[4]);
1437         if (@dxcc > 0) {
1438                 $org_dxcc = $dxcc[1]->dxcc;
1439                 $org_itu = $dxcc[1]->itu;
1440                 $org_cq = $dxcc[1]->cq;
1441         }
1442
1443         if ($self->{inannfilter}) {
1444                 my ($filter, $hops) =
1445                         $self->{inannfilter}->it(@_, $self->{call},
1446                                                                          $ann_dxcc, $ann_itu, $ann_cq,
1447                                                                          $org_dxcc, $org_itu, $org_cq);
1448                 unless ($filter) {
1449                         dbg("PCPROT: Rejected by input announce filter") if isdbg('chanerr');
1450                         return;
1451                 }
1452         }
1453
1454         Log('ann', $target, $_[0], $text);
1455
1456         # send it if it isn't the except list and isn't isolated and still has a hop count
1457         # taking into account filtering and so on
1458         foreach $dxchan (@dxchan) {
1459                 next if $dxchan == $main::me;
1460                 next if $dxchan == $self && $self->is_node;
1461                 $dxchan->announce($line, $self->{isolate}, $to, $target, $text, @_, $self->{call}, $ann_dxcc, $ann_itu, $ann_cq, $org_dxcc, $org_itu, $org_cq);
1462         }
1463 }
1464
1465 sub announce
1466 {
1467         my $self = shift;
1468         my $line = shift;
1469         my $isolate = shift;
1470         my $to = shift;
1471         my $target = shift;
1472         my $text = shift;
1473         my ($filter, $hops);
1474
1475         if ($self->{annfilter}) {
1476                 ($filter, $hops) = $self->{annfilter}->it(@_);
1477                 return unless $filter;
1478         }
1479         send_prot_line($self, $filter, $hops, $isolate, $line) unless $_[1] eq $main::mycall;
1480 }
1481
1482
1483 sub send_local_config
1484 {
1485         my $self = shift;
1486         my $n;
1487         my @nodes;
1488         my @localnodes;
1489         my @remotenodes;
1490
1491         dbg('DXProt::send_local_config') if isdbg('trace');
1492
1493         # send our nodes
1494         if ($self->{isolate}) {
1495                 @localnodes = ( $main::routeroot );
1496         } else {
1497                 # create a list of all the nodes that are not connected to this connection
1498                 # and are not themselves isolated, this to make sure that isolated nodes
1499         # don't appear outside of this node
1500                 my @dxchan = grep { $_->call ne $main::mycall && $_ != $self && !$_->{isolate} } DXChannel::get_all_nodes();
1501                 @localnodes = map { my $r = Route::Node::get($_->{call}); $r ? $r : () } @dxchan if @dxchan;
1502                 my @intcalls = map { $_->nodes } @localnodes if @localnodes;
1503                 my $ref = Route::Node::get($self->{call});
1504                 my @rnodes = $ref->nodes;
1505                 for my $n (@intcalls) {
1506                         push @remotenodes, Route::Node::get($n) unless grep $n eq $_, @rnodes;
1507                 }
1508                 unshift @localnodes, $main::routeroot;
1509         }
1510
1511         send_route($self, \&pc19, scalar(@localnodes)+scalar(@remotenodes), @localnodes, @remotenodes);
1512
1513         # get all the users connected on the above nodes and send them out
1514         foreach $n (@localnodes, @remotenodes) {
1515                 if ($n) {
1516                         send_route($self, \&pc16, 1, $n, map {my $r = Route::User::get($_); $r ? ($r) : ()} $n->users);
1517                 } else {
1518                         dbg("sent a null value") if isdbg('chanerr');
1519                 }
1520         }
1521 }
1522
1523 #
1524 # route a message down an appropriate interface for a callsign
1525 #
1526 # is called route(to, pcline);
1527 #
1528 sub route
1529 {
1530         my ($self, $call, $line) = @_;
1531
1532         if (ref $self && $call eq $self->{call}) {
1533                 dbg("PCPROT: Trying to route back to source, dropped") if isdbg('chanerr');
1534                 return;
1535         }
1536
1537         # always send it down the local interface if available
1538         my $dxchan = DXChannel->get($call);
1539         unless ($dxchan) {
1540                 my $cl = Route::get($call);
1541                 $dxchan = $cl->dxchan if $cl;
1542                 if (ref $dxchan) {
1543                         if (ref $self && $dxchan eq $self) {
1544                                 dbg("PCPROT: Trying to route back to source, dropped") if isdbg('chanerr');
1545                                 return;
1546                         }
1547                 }
1548         }
1549         if ($dxchan) {
1550                 my $routeit = adjust_hops($dxchan, $line);   # adjust its hop count by node name
1551                 if ($routeit) {
1552                         $dxchan->send($routeit) unless $dxchan == $main::me;
1553                 }
1554         } else {
1555                 dbg("PCPROT: No route available, dropped") if isdbg('chanerr');
1556         }
1557 }
1558
1559 #
1560 # obtain the hops from the list for this callsign and pc no
1561 #
1562
1563 sub get_hops
1564 {
1565         my $pcno = shift;
1566         my $hops = $DXProt::hopcount{$pcno};
1567         $hops = $DXProt::def_hopcount if !$hops;
1568         return "H$hops";
1569 }
1570
1571 #
1572 # adjust the hop count on a per node basis using the user loadable
1573 # hop table if available or else decrement an existing one
1574 #
1575
1576 sub adjust_hops
1577 {
1578         my $self = shift;
1579         my $s = shift;
1580         my $call = $self->{call};
1581         my $hops;
1582
1583         if (($hops) = $s =~ /\^H(\d+)\^~?$/o) {
1584                 my ($pcno) = $s =~ /^PC(\d\d)/o;
1585                 confess "$call called adjust_hops with '$s'" unless $pcno;
1586                 my $ref = $nodehops{$call} if %nodehops;
1587                 if ($ref) {
1588                         my $newhops = $ref->{$pcno};
1589                         return "" if defined $newhops && $newhops == 0;
1590                         $newhops = $ref->{default} unless $newhops;
1591                         return "" if defined $newhops && $newhops == 0;
1592                         $newhops = $hops if !$newhops;
1593                         $s =~ s/\^H(\d+)(\^~?)$/\^H$newhops$2/ if $newhops;
1594                 } else {
1595                         # simply decrement it
1596                         $hops--;
1597                         return "" if !$hops;
1598                         $s =~ s/\^H(\d+)(\^~?)$/\^H$hops$2/ if $hops;
1599                 }
1600         }
1601         return $s;
1602 }
1603
1604 #
1605 # load hop tables
1606 #
1607 sub load_hops
1608 {
1609         my $self = shift;
1610         return $self->msg('lh1') unless -e "$main::data/hop_table.pl";
1611         do "$main::data/hop_table.pl";
1612         return $@ if $@;
1613         return 0;
1614 }
1615
1616
1617 # add a ping request to the ping queues
1618 sub addping
1619 {
1620         my ($from, $to) = @_;
1621         my $ref = $pings{$to} || [];
1622         my $r = {};
1623         $r->{call} = $from;
1624         $r->{t} = [ gettimeofday ];
1625         route(undef, $to, pc51($to, $main::mycall, 1));
1626         push @$ref, $r;
1627         $pings{$to} = $ref;
1628 }
1629
1630 sub process_rcmd
1631 {
1632         my ($self, $tonode, $fromnode, $user, $cmd) = @_;
1633         if ($tonode eq $main::mycall) {
1634                 my $ref = DXUser->get_current($fromnode);
1635                 my $cref = Route::Node::get($fromnode);
1636                 Log('rcmd', 'in', $ref->{priv}, $fromnode, $cmd);
1637                 if ($cmd !~ /^\s*rcmd/i && $cref && $ref && $cref->call eq $ref->homenode) { # not allowed to relay RCMDS!
1638                         if ($ref->{priv}) {             # you have to have SOME privilege, the commands have further filtering
1639                                 $self->{remotecmd} = 1; # for the benefit of any command that needs to know
1640                                 my $oldpriv = $self->{priv};
1641                                 $self->{priv} = $ref->{priv}; # assume the user's privilege level
1642                                 my @in = (DXCommandmode::run_cmd($self, $cmd));
1643                                 $self->{priv} = $oldpriv;
1644                                 $self->send_rcmd_reply($main::mycall, $fromnode, $user, @in);
1645                                 delete $self->{remotecmd};
1646                         } else {
1647                                 $self->send_rcmd_reply($main::mycall, $fromnode, $user, "sorry...!");
1648                         }
1649                 } else {
1650                         $self->send_rcmd_reply($main::mycall, $fromnode, $user, "your attempt is logged, Tut tut tut...!");
1651                 }
1652         } else {
1653                 my $ref = DXUser->get_current($tonode);
1654                 if ($ref && $ref->is_clx) {
1655                         $self->route($tonode, pc84($fromnode, $tonode, $user, $cmd));
1656                 } else {
1657                         $self->route($tonode, pc34($fromnode, $tonode, $cmd));
1658                 }
1659         }
1660 }
1661
1662 sub process_rcmd_reply
1663 {
1664         my ($self, $tonode, $fromnode, $user, $line) = @_;
1665         if ($tonode eq $main::mycall) {
1666                 my $s = $rcmds{$fromnode};
1667                 if ($s) {
1668                         my $dxchan = DXChannel->get($s->{call});
1669                         my $ref = $user eq $tonode ? $dxchan : (DXChannel->get($user) || $dxchan);
1670                         $ref->send($line) if $ref;
1671                         delete $rcmds{$fromnode} if !$dxchan;
1672                 } else {
1673                         # send unsolicited ones to the sysop
1674                         my $dxchan = DXChannel->get($main::myalias);
1675                         $dxchan->send($line) if $dxchan;
1676                 }
1677         } else {
1678                 my $ref = DXUser->get_current($tonode);
1679                 if ($ref && $ref->is_clx) {
1680                         $self->route($tonode, pc85($fromnode, $tonode, $user, $line));
1681                 } else {
1682                         $self->route($tonode, pc35($fromnode, $tonode, $line));
1683                 }
1684         }
1685 }
1686
1687 sub send_rcmd_reply
1688 {
1689         my $self = shift;
1690         my $tonode = shift;
1691         my $fromnode = shift;
1692         my $user = shift;
1693         while (@_) {
1694                 my $line = shift;
1695                 $line =~ s/\s*$//;
1696                 Log('rcmd', 'out', $fromnode, $line);
1697                 if ($self->is_clx) {
1698                         $self->send(pc85($main::mycall, $fromnode, $user, "$main::mycall:$line"));
1699                 } else {
1700                         $self->send(pc35($main::mycall, $fromnode, "$main::mycall:$line"));
1701                 }
1702         }
1703 }
1704
1705 # add a rcmd request to the rcmd queues
1706 sub addrcmd
1707 {
1708         my ($self, $to, $cmd) = @_;
1709
1710         my $r = {};
1711         $r->{call} = $self->{call};
1712         $r->{t} = $main::systime;
1713         $r->{cmd} = $cmd;
1714         $rcmds{$to} = $r;
1715
1716         my $ref = Route::Node::get($to);
1717         my $dxchan = $ref->dxchan;
1718         if ($dxchan && $dxchan->is_clx) {
1719                 route(undef, $to, pc84($main::mycall, $to, $self->{call}, $cmd));
1720         } else {
1721                 route(undef, $to, pc34($main::mycall, $to, $cmd));
1722         }
1723 }
1724
1725 sub disconnect
1726 {
1727         my $self = shift;
1728         my $pc39flag = shift;
1729         my $call = $self->call;
1730
1731         return if $self->{disconnecting}++;
1732
1733         unless ($pc39flag && $pc39flag == 1) {
1734                 $self->send_now("D", DXProt::pc39($main::mycall, $self->msg('disc1', "System Op")));
1735         }
1736
1737         # do routing stuff
1738         my $node = Route::Node::get($call);
1739         my @rout;
1740         if ($node) {
1741                 @rout = $node->del($main::routeroot);
1742         }
1743
1744         # unbusy and stop and outgoing mail
1745         my $mref = DXMsg::get_busy($call);
1746         $mref->stop_msg($call) if $mref;
1747
1748         # broadcast to all other nodes that all the nodes connected to via me are gone
1749         unless ($pc39flag && $pc39flag == 2) {
1750                 $self->route_pc21(@rout) if @rout;
1751         }
1752
1753         # remove outstanding pings
1754         delete $pings{$call};
1755
1756         # I was the last node visited
1757     $self->user->node($main::mycall);
1758
1759         # send info to all logged in thingies
1760         $self->tell_login('logoutn');
1761
1762         Log('DXProt', $call . " Disconnected");
1763
1764         $self->SUPER::disconnect;
1765 }
1766
1767
1768 #
1769 # send a talk message to this thingy
1770 #
1771 sub talk
1772 {
1773         my ($self, $from, $to, $via, $line, $origin) = @_;
1774
1775         $line =~ s/\^/\\5E/g;                   # remove any ^ characters
1776         $self->send(DXProt::pc10($from, $to, $via, $line, $origin));
1777         Log('talk', $self->call, $from, $via?$via:$main::mycall, $line) unless $origin && $origin ne $main::mycall;
1778 }
1779
1780 # send it if it isn't the except list and isn't isolated and still has a hop count
1781 # taking into account filtering and so on
1782 sub send_route
1783 {
1784         my $self = shift;
1785         my $generate = shift;
1786         my $no = shift;     # the no of things to filter on
1787         my $routeit;
1788         my ($filter, $hops);
1789         my @rin;
1790
1791         for (; @_ && $no; $no--) {
1792                 my $r = shift;
1793
1794                 if (!$self->{isolate} && $self->{routefilter}) {
1795                         $filter = undef;
1796                         if ($r) {
1797                                 ($filter, $hops) = $self->{routefilter}->it($self->{call}, $self->{dxcc}, $self->{itu}, $self->{cq}, $r->call, $r->dxcc, $r->itu, $r->cq);
1798                                 if ($filter) {
1799                                         push @rin, $r;
1800                                 } else {
1801                                         dbg("DXPROT: $self->{call}/" . $r->call . " rejected by output filter") if isdbg('chanerr');
1802                                 }
1803                         } else {
1804                                 dbg("was sent a null value") if isdbg('chanerr');
1805                         }
1806                 } else {
1807                         push @rin, $r unless $self->{isolate} && $r->call ne $main::mycall;
1808                 }
1809         }
1810         if (@rin) {
1811                 foreach my $line (&$generate(@rin, @_)) {
1812                         if ($hops) {
1813                                 $routeit = $line;
1814                                 $routeit =~ s/\^H\d+\^\~$/\^H$hops\^\~/;
1815                         } else {
1816                                 $routeit = adjust_hops($self, $line);  # adjust its hop count by node name
1817                                 next unless $routeit;
1818                         }
1819                         $self->send($routeit);
1820                 }
1821         }
1822 }
1823
1824 sub broadcast_route
1825 {
1826         my $self = shift;
1827         my $generate = shift;
1828         my @dxchan = DXChannel::get_all_nodes();
1829         my $dxchan;
1830         my $line;
1831
1832         unless ($self->{isolate}) {
1833                 foreach $dxchan (@dxchan) {
1834                         next if $dxchan == $self;
1835                         next if $dxchan == $main::me;
1836                         $dxchan->send_route($generate, @_);
1837                 }
1838         }
1839 }
1840
1841 sub route_pc16
1842 {
1843         my $self = shift;
1844         broadcast_route($self, \&pc16, 1, @_);
1845 }
1846
1847 sub route_pc17
1848 {
1849         my $self = shift;
1850         broadcast_route($self, \&pc17, 1, @_);
1851 }
1852
1853 sub route_pc19
1854 {
1855         my $self = shift;
1856         broadcast_route($self, \&pc19, scalar @_, @_);
1857 }
1858
1859 sub route_pc21
1860 {
1861         my $self = shift;
1862         broadcast_route($self, \&pc21, scalar @_, @_);
1863 }
1864
1865 sub route_pc24
1866 {
1867         my $self = shift;
1868         broadcast_route($self, \&pc24, 1, @_);
1869 }
1870
1871 sub route_pc41
1872 {
1873         my $self = shift;
1874         broadcast_route($self, \&pc41, 1, @_);
1875 }
1876
1877 sub route_pc50
1878 {
1879         my $self = shift;
1880         broadcast_route($self, \&pc50, 1, @_);
1881 }
1882
1883 sub in_filter_route
1884 {
1885         my $self = shift;
1886         my $r = shift;
1887         my ($filter, $hops) = (1, 1);
1888
1889         if ($self->{inroutefilter}) {
1890                 ($filter, $hops) = $self->{inroutefilter}->it($self->{call}, $self->{dxcc}, $self->{itu}, $self->{cq}, $r->call, $r->dxcc, $r->itu, $r->cq);
1891                 dbg("PCPROT: $self->{call}/" . $r->call . ' rejected by in_filter_route') if !$filter && isdbg('chanerr');
1892         }
1893         return $filter;
1894 }
1895
1896 sub eph_dup
1897 {
1898         my $s = shift;
1899         my $r;
1900
1901         # chop the end off
1902         $s =~ s/\^H\d\d?\^?\~?$//;
1903         $r = 1 if exists $eph{$s};    # pump up the dup if it keeps circulating
1904         $eph{$s} = $main::systime;
1905         return $r;
1906 }
1907
1908 sub eph_del_regex
1909 {
1910         my $regex = shift;
1911         my ($key, $val);
1912         while (($key, $val) = each %eph) {
1913                 if ($key =~ m{$regex}) {
1914                         delete $eph{$key};
1915                 }
1916         }
1917 }
1918
1919 sub eph_clean
1920 {
1921         my ($key, $val);
1922
1923         while (($key, $val) = each %eph) {
1924                 if ($main::systime - $val > 180) {
1925                         delete $eph{$key};
1926                 }
1927         }
1928 }
1929
1930 1;
1931 __END__