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