perl/DXProt.pm

   1 #!/usr/bin/perl
   2 #
   3 # This module impliments the protocal mode for a dx cluster
   4 #
   5 # Copyright (c) 1998 Dirk Koopman G1TLH
   6 #
   7 # $Id$
   8 #
   9
  10 package DXProt;
  11
  12 @ISA = qw(DXChannel);
  13
  14 use DXUtil;
  15 use DXChannel;
  16 use DXUser;
  17 use DXM;
  18 use DXProtVars;
  19 use DXCommandmode;
  20 use DXLog;
  21 use Spot;
  22 use DXProtout;
  23 use DXDebug;
  24 use Filter;
  25 use Local;
  26 use DXDb;
  27 use AnnTalk;
  28 use Geomag;
  29 use WCY;
  30 use Time::HiRes qw(gettimeofday tv_interval);
  31 use BadWords;
  32 use DXHash;
  33 use Route;
  34 use Route::Node;
  35
  36 use strict;
  37 use vars qw($me $pc11_max_age $pc23_max_age
  38                         $last_hour $last10 %eph  %pings %rcmds
  39                         %nodehops $baddx $badspotter $badnode $censorpc
  40                         $allowzero $decode_dk0wcy $send_opernam @checklist);
  41
  42 $me = undef;                                    # the channel id for this cluster
  43 $pc11_max_age = 1*3600;                 # the maximum age for an incoming 'real-time' pc11
  44 $pc23_max_age = 1*3600;                 # the maximum age for an incoming 'real-time' pc23
  45
  46 $last_hour = time;                              # last time I did an hourly periodic update
  47 %pings = ();                    # outstanding ping requests outbound
  48 %rcmds = ();                    # outstanding rcmd requests outbound
  49 %nodehops = ();                 # node specific hop control
  50 $censorpc = 1;                                  # Do a BadWords::check on text fields and reject things
  51                                                                 # loads of 'bad things'
  52 $baddx = new DXHash "baddx";
  53 $badspotter = new DXHash "badspotter";
  54 $badnode = new DXHash "badnode";
  55 $last10 = time;
  56
  57 @checklist =
  58 (
  59  [ qw(c c m bp bc c) ],                 # pc10
  60  [ qw(f m d t m c c h) ],               # pc11
  61  [ qw(c bc m bp bm p h) ],              # pc12
  62  [ qw(c h) ],                                   #
  63  [ qw(c h) ],                                   #
  64  [ qw(c m h) ],                                 #
  65  undef ,                                                # pc16 has to be validated manually
  66  [ qw(c c h) ],                                 # pc17
  67  [ qw(m n) ],                                   # pc18
  68  undef ,                                                # pc19 has to be validated manually
  69  undef ,                                                # pc20 no validation
  70  [ qw(c m h) ],                                 # pc21
  71  undef ,                                                # pc22 no validation
  72  [ qw(d n n n n m c c h) ],             # pc23
  73  [ qw(c p h) ],                                 # pc24
  74  [ qw(c c n n) ],                               # pc25
  75  [ qw(f m d t m c c bc) ],              # pc26
  76  [ qw(d n n n n m c c bc) ],    # pc27
  77  [ qw(c c m c d t p m bp n p bp bc) ], # pc28
  78  [ qw(c c n m) ],                               # pc29
  79  [ qw(c c n) ],                                 # pc30
  80  [ qw(c c n) ],                                 # pc31
  81  [ qw(c c n) ],                                 # pc32
  82  [ qw(c c n) ],                                 # pc33
  83  [ qw(c c m) ],                                 # pc34
  84  [ qw(c c m) ],                                 # pc35
  85  [ qw(c c m) ],                                 # pc36
  86  [ qw(c c n m) ],                               # pc37
  87  undef,                                                 # pc38 not interested
  88  [ qw(c m) ],                                   # pc39
  89  [ qw(c c m p n) ],                             # pc40
  90  [ qw(c n m h) ],                               # pc41
  91  [ qw(c c n) ],                                 # pc42
  92  undef,                                                 # pc43 don't handle it
  93  [ qw(c c n m m c) ],                   # pc44
  94  [ qw(c c n m) ],                               # pc45
  95  [ qw(c c n) ],                                 # pc46
  96  undef,                                                 # pc47
  97  undef,                                                 # pc48
  98  [ qw(c m h) ],                                 # pc49
  99  [ qw(c n h) ],                                 # pc50
 100  [ qw(c c n) ],                                 # pc51
 101  undef,
 102  undef,
 103  undef,
 104  undef,
 105  undef,
 106  undef,
 107  undef,
 108  undef,
 109  undef,                                                 # pc60
 110  undef,
 111  undef,
 112  undef,
 113  undef,
 114  undef,
 115  undef,
 116  undef,
 117  undef,
 118  undef,
 119  undef,                                                 # pc70
 120  undef,
 121  undef,
 122  [ qw(d n n n n n n m m m c c h) ],     # pc73
 123  undef,
 124  undef,
 125  undef,
 126  undef,
 127  undef,
 128  undef,
 129  undef,                                                 # pc80
 130  undef,
 131  undef,
 132  undef,
 133  [ qw(c c c m) ],                               # pc84
 134  [ qw(c c c m) ],                               # pc85
 135 );
 136
 137 # use the entry in the check list to check the field list presented
 138 # return OK if line NOT in check list (for now)
 139 sub check
 140 {
 141         my $n = shift;
 142         $n -= 10;
 143         return 0 if $n < 0 || $n > @checklist;
 144         my $ref = $checklist[$n];
 145         return 0 unless ref $ref;
 146
 147         my $i;
 148         shift;    # not interested in the first field
 149         for ($i = 0; $i < @$ref; $i++) {
 150                 my ($blank, $act) = $$ref[$i] =~ /^(b?)(\w)$/;
 151                 return 0 unless $act;
 152                 next if $blank && $_[$i] =~ /^[ \*]$/;
 153                 if ($act eq 'c') {
 154                         return $i+1 unless is_callsign($_[$i]);
 155                 } elsif ($act eq 'm') {
 156                         return $i+1 unless is_pctext($_[$i]);
 157                 } elsif ($act eq 'p') {
 158                         return $i+1 unless is_pcflag($_[$i]);
 159                 } elsif ($act eq 'f') {
 160                         return $i+1 unless is_freq($_[$i]);
 161                 } elsif ($act eq 'n') {
 162                         return $i+1 unless $_[$i] =~ /^[\d ]+$/;
 163                 } elsif ($act eq 'h') {
 164                         return $i+1 unless $_[$i] =~ /^H\d\d?$/;
 165                 } elsif ($act eq 'd') {
 166                         return $i+1 unless $_[$i] =~ /^\s*\d+-\w\w\w-[12][90]\d\d$/;
 167                 } elsif ($act eq 't') {
 168                         return $i+1 unless $_[$i] =~ /^[012]\d[012345]\dZ$/;
 169                 }
 170         }
 171         return 0;
 172 }
 173
 174 sub init
 175 {
 176         my $user = DXUser->get($main::mycall);
 177         $DXProt::myprot_version += $main::version*100;
 178         $me = DXProt->new($main::mycall, 0, $user);
 179         $me->{here} = 1;
 180         $me->{state} = "indifferent";
 181         do "$main::data/hop_table.pl" if -e "$main::data/hop_table.pl";
 182         confess $@ if $@;
 183         $me->{sort} = 'S';    # S for spider
 184         $me->{priv} = 9;
 185 #       $Route::Node::me->adddxchan($me);
 186 }
 187
 188 #
 189 # obtain a new connection this is derived from dxchannel
 190 #
 191
 192 sub new
 193 {
 194         my $self = DXChannel::alloc(@_);
 195
 196         # add this node to the table, the values get filled in later
 197         my $pkg = shift;
 198         my $call = shift;
 199         $main::routeroot->add($call, '0000', Route::here(1)) if $call ne $main::mycall;
 200
 201         return $self;
 202 }
 203
 204 # this is how a pc connection starts (for an incoming connection)
 205 # issue a PC38 followed by a PC18, then wait for a PC20 (remembering
 206 # all the crap that comes between).
 207 sub start
 208 {
 209         my ($self, $line, $sort) = @_;
 210         my $call = $self->{call};
 211         my $user = $self->{user};
 212
 213         # remember type of connection
 214         $self->{consort} = $line;
 215         $self->{outbound} = $sort eq 'O';
 216         $self->{priv} = $user->priv || 1;     # other clusters can always be 'normal' users
 217         $self->{lang} = $user->lang || 'en';
 218         $self->{isolate} = $user->{isolate};
 219         $self->{consort} = $line;       # save the connection type
 220         $self->{here} = 1;
 221
 222         # get the output filters
 223         $self->{spotsfilter} = Filter::read_in('spots', $call, 0) || Filter::read_in('spots', 'node_default', 0);
 224         $self->{wwvfilter} = Filter::read_in('wwv', $call, 0) || Filter::read_in('wwv', 'node_default', 0);
 225         $self->{wcyfilter} = Filter::read_in('wcy', $call, 0) || Filter::read_in('wcy', 'node_default', 0);
 226         $self->{annfilter} = Filter::read_in('ann', $call, 0) || Filter::read_in('ann', 'node_default', 0) ;
 227         $self->{routefilter} = Filter::read_in('route', $call, 0) || Filter::read_in('route', 'node_default', 0) ;
 228
 229
 230         # get the INPUT filters (these only pertain to Clusters)
 231         $self->{inspotsfilter} = Filter::read_in('spots', $call, 1) || Filter::read_in('spots', 'node_default', 1);
 232         $self->{inwwvfilter} = Filter::read_in('wwv', $call, 1) || Filter::read_in('wwv', 'node_default', 1);
 233         $self->{inwcyfilter} = Filter::read_in('wcy', $call, 1) || Filter::read_in('wcy', 'node_default', 1);
 234         $self->{inannfilter} = Filter::read_in('ann', $call, 1) || Filter::read_in('ann', 'node_default', 1);
 235         $self->{inroutefilter} = Filter::read_in('route', $call, 1) || Filter::read_in('route', 'node_default', 1);
 236
 237         # set unbuffered and no echo
 238         $self->send_now('B',"0");
 239         $self->send_now('E',"0");
 240
 241         # ping neighbour node stuff
 242         my $ping = $user->pingint;
 243         $ping = 5*60 unless defined $ping;
 244         $self->{pingint} = $ping;
 245         $self->{nopings} = $user->nopings || 2;
 246         $self->{pingtime} = [ ];
 247         $self->{pingave} = 0;
 248
 249         # send initialisation string
 250         unless ($self->{outbound}) {
 251                 $self->send(pc18());
 252                 $self->{lastping} = $main::systime;
 253         } else {
 254                 $self->{lastping} = $main::systime + ($self->pingint / 2);
 255         }
 256         $self->state('init');
 257         $self->{pc50_t} = $main::systime;
 258
 259         # send info to all logged in thingies
 260         $self->tell_login('loginn');
 261
 262         Log('DXProt', "$call connected");
 263 }
 264
 265 #
 266 # This is the normal pcxx despatcher
 267 #
 268 sub normal
 269 {
 270         my ($self, $line) = @_;
 271         my @field = split /\^/, $line;
 272         return unless @field;
 273
 274         pop @field if $field[-1] eq '~';
 275
 276 #       print join(',', @field), "\n";
 277
 278
 279         # process PC frames, this will fail unless the frame starts PCnn
 280         my ($pcno) = $field[0] =~ /^PC(\d\d)/; # just get the number
 281         return unless $pcno;
 282         return if $pcno < 10 || $pcno > 99;
 283
 284         # check for and dump bad protocol messages
 285         my $n = check($pcno, @field);
 286         if ($n) {
 287                 dbg("PCPROT: bad field $n, dumped (" . parray($checklist[$pcno-10]) . ")") if isdbg('chanerr');
 288                 return;
 289         }
 290
 291         # local processing 1
 292         my $pcr;
 293         eval {
 294                 $pcr = Local::pcprot($self, $pcno, @field);
 295         };
 296 #       dbg("Local::pcprot error $@") if isdbg('local') if $@;
 297         return if $pcr;
 298
 299  SWITCH: {
 300                 if ($pcno == 10) {              # incoming talk
 301
 302                         # will we allow it at all?
 303                         if ($censorpc) {
 304                                 my @bad;
 305                                 if (@bad = BadWords::check($field[3])) {
 306                                         dbg("PCPROT: Bad words: @bad, dropped") if isdbg('chanerr');
 307                                         return;
 308                                 }
 309                         }
 310
 311                         # is it for me or one of mine?
 312                         my ($to, $via, $call, $dxchan);
 313                         if ($field[5] gt ' ') {
 314                                 $call = $via = $field[2];
 315                                 $to = $field[5];
 316                         } else {
 317                                 $call = $to = $field[2];
 318                         }
 319                         $dxchan = DXChannel->get($call);
 320                         if ($dxchan && $dxchan->is_user) {
 321                                 $field[3] =~ s/\%5E/^/g;
 322                                 $dxchan->talk($field[1], $to, $via, $field[3]);
 323                         } else {
 324                                 $self->route($field[2], $line); # relay it on its way
 325                         }
 326                         return;
 327                 }
 328
 329                 if ($pcno == 11 || $pcno == 26) { # dx spot
 330
 331                         # route 'foreign' pc26s
 332                         if ($pcno == 26) {
 333                                 if ($field[7] ne $main::mycall) {
 334                                         $self->route($field[7], $line);
 335                                         return;
 336                                 }
 337                         }
 338
 339                         # if this is a 'nodx' node then ignore it
 340                         if ($badnode->in($field[7])) {
 341                                 dbg("PCPROT: Bad Node, dropped") if isdbg('chanerr');
 342                                 return;
 343                         }
 344
 345                         # if this is a 'bad spotter' user then ignore it
 346                         if ($badspotter->in($field[6])) {
 347                                 dbg("PCPROT: Bad Spotter, dropped") if isdbg('chanerr');
 348                                 return;
 349                         }
 350
 351                         # convert the date to a unix date
 352                         my $d = cltounix($field[3], $field[4]);
 353                         # bang out (and don't pass on) if date is invalid or the spot is too old (or too young)
 354                         if (!$d || ($pcno == 11 && ($d < $main::systime - $pc11_max_age || $d > $main::systime + 900))) {
 355                                 dbg("PCPROT: Spot ignored, invalid date or out of range ($field[3] $field[4])\n") if isdbg('chanerr');
 356                                 return;
 357                         }
 358
 359                         # is it 'baddx'
 360                         if ($baddx->in($field[2])) {
 361                                 dbg("PCPROT: Bad DX spot, ignored") if isdbg('chanerr');
 362                                 return;
 363                         }
 364
 365                         # do some de-duping
 366                         $field[5] =~ s/^\s+//;      # take any leading blanks off
 367                         $field[2] = unpad($field[2]);   # take off leading and trailing blanks from spotted callsign
 368                         if ($field[2] =~ /BUST\w*$/) {
 369                                 dbg("PCPROT: useless 'BUSTED' spot") if isdbg('chanerr');
 370                                 return;
 371                         }
 372                         if (Spot::dup($field[1], $field[2], $d, $field[5])) {
 373                                 dbg("PCPROT: Duplicate Spot ignored\n") if isdbg('chanerr');
 374                                 return;
 375                         }
 376                         if ($censorpc) {
 377                                 my @bad;
 378                                 if (@bad = BadWords::check($field[5])) {
 379                                         dbg("PCPROT: Bad words: @bad, dropped") if isdbg('chanerr');
 380                                         return;
 381                                 }
 382                         }
 383
 384                         my @spot = Spot::prepare($field[1], $field[2], $d, $field[5], $field[6], $field[7]);
 385                         # global spot filtering on INPUT
 386                         if ($self->{inspotsfilter}) {
 387                                 my ($filter, $hops) = $self->{inspotsfilter}->it(@spot);
 388                                 unless ($filter) {
 389                                         dbg("PCPROT: Rejected by input spot filter") if isdbg('chanerr');
 390                                         return;
 391                                 }
 392                         }
 393
 394                         # add it
 395                         Spot::add(@spot);
 396
 397             #
 398                         # @spot at this point contains:-
 399             # freq, spotted call, time, text, spotter, spotted cc, spotters cc, orig node
 400                         # then  spotted itu, spotted cq, spotters itu, spotters cq
 401                         # you should be able to route on any of these
 402             #
 403
 404                         # fix up qra locators of known users
 405                         my $user = DXUser->get_current($spot[4]);
 406                         if ($user) {
 407                                 my $qra = $user->qra;
 408                                 unless ($qra && DXBearing::is_qra($qra)) {
 409                                         my $lat = $user->lat;
 410                                         my $long = $user->long;
 411                                         if (defined $lat && defined $long) {
 412                                                 $user->qra(DXBearing::lltoqra($lat, $long));
 413                                                 $user->put;
 414                                         }
 415                                 }
 416
 417                                 # send a remote command to a distant cluster if it is visible and there is no
 418                                 # qra locator and we havn't done it for a month.
 419
 420                                 unless ($user->qra) {
 421                                         my $node;
 422                                         my $to = $user->homenode;
 423                                         my $last = $user->lastoper || 0;
 424                                         if ($send_opernam && $main::systime > $last + $DXUser::lastoperinterval && $to && ($node = Route::Node::get($to)) ) {
 425                                                 my $cmd = "forward/opernam $spot[4]";
 426                                                 # send the rcmd but we aren't interested in the replies...
 427                                                 my $dxchan = $node->dxchan;
 428                                                 if ($dxchan && $dxchan->is_clx) {
 429                                                         route(undef, $to, pc84($main::mycall, $to, $main::mycall, $cmd));
 430                                                 } else {
 431                                                         route(undef, $to, pc34($main::mycall, $to, $cmd));
 432                                                 }
 433                                                 if ($to ne $field[7]) {
 434                                                         $to = $field[7];
 435                                                         $node = Route::Node::get($to);
 436                                                         if ($node) {
 437                                                                 $dxchan = $node->dxchan;
 438                                                                 if ($dxchan && $dxchan->is_clx) {
 439                                                                         route(undef, $to, pc84($main::mycall, $to, $main::mycall, $cmd));
 440                                                                 } else {
 441                                                                         route(undef, $to, pc34($main::mycall, $to, $cmd));
 442                                                                 }
 443                                                         }
 444                                                 }
 445                                                 $user->lastoper($main::systime);
 446                                                 $user->put;
 447                                         }
 448                                 }
 449                         }
 450
 451                         # local processing
 452                         my $r;
 453                         eval {
 454                                 $r = Local::spot($self, @spot);
 455                         };
 456 #                       dbg("Local::spot1 error $@") if isdbg('local') if $@;
 457                         return if $r;
 458
 459                         # DON'T be silly and send on PC26s!
 460                         return if $pcno == 26;
 461
 462                         # send out the filtered spots
 463                         send_dx_spot($self, $line, @spot) if @spot;
 464                         return;
 465                 }
 466
 467                 if ($pcno == 12) {              # announces
 468                         # announce duplicate checking
 469                         $field[3] =~ s/^\s+//;  # remove leading blanks
 470                         if (AnnTalk::dup($field[1], $field[2], $field[3])) {
 471                                 dbg("PCPROT: Duplicate Announce ignored") if isdbg('chanerr');
 472                                 return;
 473                         }
 474
 475                         if ($censorpc) {
 476                                 my @bad;
 477                                 if (@bad = BadWords::check($field[3])) {
 478                                         dbg("PCPROT: Bad words: @bad, dropped") if isdbg('chanerr');
 479                                         return;
 480                                 }
 481                         }
 482
 483                         if ($field[2] eq '*' || $field[2] eq $main::mycall) {
 484
 485                                 # global ann filtering on INPUT
 486                                 if ($self->{inannfilter}) {
 487                                         my ($ann_dxcc, $ann_itu, $ann_cq, $org_dxcc, $org_itu, $org_cq) = (0..0);
 488                                         my @dxcc = Prefix::extract($field[1]);
 489                                         if (@dxcc > 0) {
 490                                                 $ann_dxcc = $dxcc[1]->dxcc;
 491                                                 $ann_itu = $dxcc[1]->itu;
 492                                                 $ann_cq = $dxcc[1]->cq();
 493                                         }
 494                                         @dxcc = Prefix::extract($field[5]);
 495                                         if (@dxcc > 0) {
 496                                                 $org_dxcc = $dxcc[1]->dxcc;
 497                                                 $org_itu = $dxcc[1]->itu;
 498                                                 $org_cq = $dxcc[1]->cq();
 499                                         }
 500                                         my ($filter, $hops) = $self->{inannfilter}->it(@field[1..6], $self->{call},
 501                                                                                                         $ann_dxcc, $ann_itu, $ann_cq, $org_dxcc, $org_itu, $org_cq);
 502                                         unless ($filter) {
 503                                                 dbg("PCPROT: Rejected by input announce filter") if isdbg('chanerr');
 504                                                 return;
 505                                         }
 506                                 }
 507
 508                                 # send it
 509                                 $self->send_announce($line, @field[1..6]);
 510                         } else {
 511                                 $self->route($field[2], $line);
 512                         }
 513
 514                         return;
 515                 }
 516
 517                 if ($pcno == 13) {
 518                         last SWITCH;
 519                 }
 520                 if ($pcno == 14) {
 521                         last SWITCH;
 522                 }
 523                 if ($pcno == 15) {
 524                         last SWITCH;
 525                 }
 526
 527                 if ($pcno == 16) {              # add a user
 528
 529                         # general checks
 530                         my $dxchan;
 531                         my $ncall = $field[1];
 532                         my $newline = "PC16^";
 533
 534                         if ($ncall eq $main::mycall) {
 535                                 dbg("PCPROT: trying to alter config on this node from outside!") if isdbg('chanerr');
 536                                 return;
 537                         }
 538                         $dxchan = DXChannel->get($ncall);
 539                         if ($dxchan && $dxchan ne $self) {
 540                                 dbg("PCPROT: PC16 from $self->{call} trying to alter locally connected $ncall, ignored!") if isdbg('chanerr');
 541                                 return;
 542                         }
 543                         my $parent = Route::Node::get($ncall);
 544                         unless ($parent) {
 545                                 dbg("PCPROT: Node $ncall not in config") if isdbg('chanerr');
 546                                 return;
 547                         }
 548
 549                         # input filter if required
 550                         return unless $self->in_filter_route($parent);
 551
 552                         my $i;
 553                         my @rout;
 554                         for ($i = 2; $i < $#field; $i++) {
 555                                 my ($call, $conf, $here) = $field[$i] =~ /^(\S+) (\S) (\d)/o;
 556                                 next unless $call && $conf && defined $here && is_callsign($call);
 557                                 $conf = $conf eq '*';
 558
 559                                 my $r = Route::User::get($call);
 560                                 my $flags = Route::here($here)|Route::conf($conf);
 561
 562                                 if ($r && $r->flags != $flags) {
 563                                         $r->flags($flags);
 564                                         push @rout, $r;
 565                                 } elsif (!$r) {
 566                                         push @rout, $parent->add_user($call, $flags);
 567                                 }
 568
 569                                 # add this station to the user database, if required
 570                                 $call =~ s/-\d+$//o;        # remove ssid for users
 571                                 my $user = DXUser->get_current($call);
 572                                 $user = DXUser->new($call) if !$user;
 573                                 $user->homenode($parent->call) if !$user->homenode;
 574                                 $user->node($parent->call);
 575                                 $user->lastin($main::systime) unless DXChannel->get($call);
 576                                 $user->put;
 577                         }
 578
 579
 580                         # queue up any messages (look for privates only)
 581                         DXMsg::queue_msg(1) if $self->state eq 'normal';
 582
 583                         $self->route_pc16($parent, @rout) if @rout;
 584                         return;
 585                 }
 586
 587                 if ($pcno == 17) {              # remove a user
 588                         my $dxchan;
 589                         my $ncall = $field[2];
 590                         my $ucall = $field[1];
 591                         if ($ncall eq $main::mycall) {
 592                                 dbg("PCPROT: trying to alter config on this node from outside!") if isdbg('chanerr');
 593                                 return;
 594                         }
 595                         $dxchan = DXChannel->get($ncall);
 596                         if ($dxchan && $dxchan ne $self) {
 597                                 dbg("PCPROT: PC17 from $self->{call} trying to alter locally connected $ncall, ignored!") if isdbg('chanerr');
 598                                 return;
 599                         }
 600                         my $parent = Route::Node::get($ncall);
 601                         unless ($parent) {
 602                                 dbg("PCPROT: Route::Node $ncall not in config") if isdbg('chanerr');
 603                                 return;
 604                         }
 605
 606                         # input filter if required
 607                         return unless $self->in_filter_route($parent);
 608
 609                         my @rout = $parent->del_user($ucall);
 610                         $self->route_pc17($parent, @rout) if @rout;
 611                         return;
 612                 }
 613
 614                 if ($pcno == 18) {              # link request
 615                         $self->state('init');
 616
 617                         # first clear out any nodes on this dxchannel
 618                         my $parent = Route::Node::get($self->{call});
 619                         my @rout = $parent->del_nodes;
 620                         $self->route_pc21(@rout, $parent);
 621                         $self->send_local_config();
 622                         $self->send(pc20());
 623                         return;             # we don't pass these on
 624                 }
 625
 626                 if ($pcno == 19) {              # incoming cluster list
 627                         my $i;
 628                         my $newline = "PC19^";
 629
 630                         # new routing list
 631                         my @rout;
 632                         my $parent = Route::Node::get($self->{call});
 633
 634                         # parse the PC19
 635                         for ($i = 1; $i < $#field-1; $i += 4) {
 636                                 my $here = $field[$i];
 637                                 my $call = uc $field[$i+1];
 638                                 my $conf = $field[$i+2];
 639                                 my $ver = $field[$i+3];
 640                                 next unless defined $here && defined $conf && is_callsign($call);
 641                                 # check for sane parameters
 642                                 $ver = 5000 if $ver eq '0000';
 643                                 next if $ver < 5000; # only works with version 5 software
 644                                 next if length $call < 3; # min 3 letter callsigns
 645
 646                                 # update it if required
 647                                 my $r = Route::Node::get($call);
 648                                 my $flags = Route::here($here)|Route::conf($conf);
 649                                 if ($r) {
 650                                         my $ar;
 651                                         if ($call ne $parent->call) {
 652                                                 if ($self->in_filter_route($r)) {
 653                                                         $ar = $parent->add($call, $ver, $flags);
 654                                                         push @rout, $ar if $ar;
 655                                                 } else {
 656                                                         next;
 657                                                 }
 658                                         }
 659                                         if ($r->version ne $ver || $r->flags != $flags) {
 660                                                 $r->version($ver);
 661                                                 $r->flags($flags);
 662                                                 push @rout, $r unless $ar;
 663                                         }
 664                                 } else {
 665                                         next if $call eq $main::mycall || $call eq $self->{call};
 666
 667                                         my $new = Route->new($call);          # throw away
 668                                     if ($self->in_filter_route($new)) {
 669                                                 my $r = $parent->add($call, $ver, $flags);
 670                                                 push @rout, $r;
 671                                         } else {
 672                                                 next;
 673                                         }
 674                                 }
 675
 676                                 # unbusy and stop and outgoing mail (ie if somehow we receive another PC19 without a disconnect)
 677                                 my $mref = DXMsg::get_busy($call);
 678                                 $mref->stop_msg($call) if $mref;
 679
 680                                 # add this station to the user database, if required (don't remove SSID from nodes)
 681                                 my $user = DXUser->get_current($call);
 682                                 if (!$user) {
 683                                         $user = DXUser->new($call);
 684                                         $user->sort('A');
 685                                         $user->priv(1);                   # I have relented and defaulted nodes
 686                                         $self->{priv} = 1;                # to user RCMDs allowed
 687                                         $user->homenode($call);
 688                                         $user->node($call);
 689                                 }
 690                                 $user->lastin($main::systime) unless DXChannel->get($call);
 691                                 $user->put;
 692                         }
 693
 694                         $self->route_pc19(@rout) if @rout;
 695                         return;
 696                 }
 697
 698                 if ($pcno == 20) {              # send local configuration
 699                         $self->send_local_config();
 700                         $self->send(pc22());
 701                         $self->state('normal');
 702                         return;
 703                 }
 704
 705                 if ($pcno == 21) {              # delete a cluster from the list
 706                         my $call = uc $field[1];
 707                         my @rout;
 708                         my $parent = Route::Node::get($self->{call});
 709                         unless ($parent) {
 710                                 dbg("PCPROT: Route::Node $call not in config") if isdbg('chanerr');
 711                                 return;
 712                         }
 713                         my $node = Route::Node::get($call);
 714                         if ($call ne $main::mycall) { # don't allow malicious buggers to disconnect me!
 715                                 if ($call eq $self->{call}) {
 716                                         dbg("PCPROT: Trying to disconnect myself with PC21") if isdbg('chanerr');
 717                                         return;
 718                                 }
 719
 720                                 if ($node) {
 721                                         # input filter it
 722                                         return unless $self->in_filter_route($node);
 723
 724                                         # routing objects
 725                                         push @rout, $node->del($parent);
 726                                 }
 727                         } else {
 728                                 dbg("PCPROT: I WILL _NOT_ be disconnected!") if isdbg('chanerr');
 729                                 return;
 730                         }
 731                         $self->route_pc21(@rout) if @rout;
 732                         return;
 733                 }
 734
 735                 if ($pcno == 22) {
 736                         $self->state('normal');
 737                         return;
 738                 }
 739
 740                 if ($pcno == 23 || $pcno == 27) { # WWV info
 741
 742                         # route 'foreign' pc27s
 743                         if ($pcno == 27) {
 744                                 if ($field[8] ne $main::mycall) {
 745                                         $self->route($field[8], $line);
 746                                         return;
 747                                 }
 748                         }
 749
 750                         # do some de-duping
 751                         my $d = cltounix($field[1], sprintf("%02d18Z", $field[2]));
 752                         my $sfi = unpad($field[3]);
 753                         my $k = unpad($field[4]);
 754                         my $i = unpad($field[5]);
 755                         my ($r) = $field[6] =~ /R=(\d+)/;
 756                         $r = 0 unless $r;
 757                         if (($pcno == 23 && $d < $main::systime - $pc23_max_age) || $d > $main::systime + 1500 || $field[2] < 0 || $field[2] > 23) {
 758                                 dbg("PCPROT: WWV Date ($field[1] $field[2]) out of range") if isdbg('chanerr');
 759                                 return;
 760                         }
 761                         if (Geomag::dup($d,$sfi,$k,$i,$field[6])) {
 762                                 dbg("PCPROT: Dup WWV Spot ignored\n") if isdbg('chanerr');
 763                                 return;
 764                         }
 765                         $field[7] =~ s/-\d+$//o;            # remove spotter's ssid
 766
 767                         my $wwv = Geomag::update($d, $field[2], $sfi, $k, $i, @field[6..8], $r);
 768
 769                         my $rep;
 770                         eval {
 771                                 $rep = Local::wwv($self, $field[1], $field[2], $sfi, $k, $i, @field[6..8], $r);
 772                         };
 773 #                       dbg("Local::wwv2 error $@") if isdbg('local') if $@;
 774                         return if $rep;
 775
 776                         # DON'T be silly and send on PC27s!
 777                         return if $pcno == 27;
 778
 779                         # broadcast to the eager world
 780                         send_wwv_spot($self, $line, $d, $field[2], $sfi, $k, $i, @field[6..8]);
 781                         return;
 782                 }
 783
 784                 if ($pcno == 24) {              # set here status
 785                         my $call = uc $field[1];
 786                         my ($nref, $uref);
 787                         $nref = Route::Node::get($call) && $nref->here($field[2]);
 788                         $uref = Route::User::get($call) && $uref->here($field[2]);
 789                         return unless $nref || $uref;   # if we don't know where they are, it's pointless sending it on
 790
 791                         unless (eph_dup($line)) {
 792                                 if ($nref) {
 793                                         return unless $self->in_filter_route($nref);
 794                                         $self->route_pc24($nref, $field[3])
 795                                 }
 796                                 if ($uref) {
 797                                         return unless $self->in_filter_route($uref);
 798                                         $self->route_pc24($uref, $field[3]);
 799                                 }
 800                         }
 801                         return;
 802                 }
 803
 804                 if ($pcno == 25) {      # merge request
 805                         if ($field[1] ne $main::mycall) {
 806                                 $self->route($field[1], $line);
 807                                 return;
 808                         }
 809                         if ($field[2] eq $main::mycall) {
 810                                 dbg("PCPROT: Trying to merge to myself, ignored") if isdbg('chanerr');
 811                                 return;
 812                         }
 813
 814                         Log('DXProt', "Merge request for $field[3] spots and $field[4] WWV from $field[1]");
 815
 816                         # spots
 817                         if ($field[3] > 0) {
 818                                 my @in = reverse Spot::search(1, undef, undef, 0, $field[3]);
 819                                 my $in;
 820                                 foreach $in (@in) {
 821                                         $self->send(pc26(@{$in}[0..4], $field[2]));
 822                                 }
 823                         }
 824
 825                         # wwv
 826                         if ($field[4] > 0) {
 827                                 my @in = reverse Geomag::search(0, $field[4], time, 1);
 828                                 my $in;
 829                                 foreach $in (@in) {
 830                                         $self->send(pc27(@{$in}[0..5], $field[2]));
 831                                 }
 832                         }
 833                         return;
 834                 }
 835
 836                 if (($pcno >= 28 && $pcno <= 33) || $pcno == 40 || $pcno == 42 || $pcno == 49) { # mail/file handling
 837                         if ($pcno == 49 || $field[1] eq $main::mycall) {
 838                                 DXMsg::process($self, $line);
 839                         } else {
 840                                 $self->route($field[1], $line) unless $self->is_clx;
 841                         }
 842                         return;
 843                 }
 844
 845                 if ($pcno == 34 || $pcno == 36) { # remote commands (incoming)
 846                         if ($field[1] eq $main::mycall) {
 847                                 my $ref = DXUser->get_current($field[2]);
 848                                 my $cref = Route::Node::get($field[2]);
 849                                 Log('rcmd', 'in', $ref->{priv}, $field[2], $field[3]);
 850                                 unless (!$cref || !$ref || $cref->call ne $ref->homenode) {    # not allowed to relay RCMDS!
 851                                         if ($ref->{priv}) {     # you have to have SOME privilege, the commands have further filtering
 852                                                 $self->{remotecmd} = 1; # for the benefit of any command that needs to know
 853                                                 my $oldpriv = $self->{priv};
 854                                                 $self->{priv} = $ref->{priv};     # assume the user's privilege level
 855                                                 my @in = (DXCommandmode::run_cmd($self, $field[3]));
 856                                                 $self->{priv} = $oldpriv;
 857                                                 for (@in) {
 858                                                         s/\s*$//og;
 859                                                         $self->send(pc35($main::mycall, $field[2], "$main::mycall:$_"));
 860                                                         Log('rcmd', 'out', $field[2], $_);
 861                                                 }
 862                                                 delete $self->{remotecmd};
 863                                         } else {
 864                                                 $self->send(pc35($main::mycall, $field[2], "$main::mycall:sorry...!"));
 865                                         }
 866                                 } else {
 867                                         $self->send(pc35($main::mycall, $field[2], "$main::mycall:your attempt is logged, Tut tut tut...!"));
 868                                 }
 869                         } else {
 870                                 my $ref = DXUser->get_current($field[1]);
 871                                 if ($ref && $ref->is_clx) {
 872                                         $self->route($field[1], pc84($field[2], $field[1], $field[2], $field[3]));
 873                                 } else {
 874                                         $self->route($field[1], $line);
 875                                 }
 876                         }
 877                         return;
 878                 }
 879
 880                 if ($pcno == 35) {              # remote command replies
 881                         if ($field[1] eq $main::mycall) {
 882                                 my $s = $rcmds{$field[2]};
 883                                 if ($s) {
 884                                         my $dxchan = DXChannel->get($s->{call});
 885                                         $dxchan->send($field[3]) if $dxchan;
 886                                         delete $rcmds{$field[2]} if !$dxchan;
 887                                 } else {
 888                                         # send unsolicited ones to the sysop
 889                                         my $dxchan = DXChannel->get($main::myalias);
 890                                         $dxchan->send($field[3]) if $dxchan;
 891                                 }
 892                         } else {
 893                                 my $ref = DXUser->get_current($field[1]);
 894                                 if ($ref && $ref->is_clx) {
 895                                         $self->route($field[1], pc85($field[2], $field[1], $field[2], $field[3]));
 896                                 } else {
 897                                         $self->route($field[1], $line);
 898                                 }
 899                         }
 900                         return;
 901                 }
 902
 903                 # for pc 37 see 44 onwards
 904
 905                 if ($pcno == 38) {              # node connected list from neighbour
 906                         return;
 907                 }
 908
 909                 if ($pcno == 39) {              # incoming disconnect
 910                         if ($field[1] eq $self->{call}) {
 911                                 $self->disconnect(1);
 912                         } else {
 913                                 dbg("PCPROT: came in on wrong channel") if isdbg('chanerr');
 914                         }
 915                         return;
 916                 }
 917
 918                 if ($pcno == 41) {              # user info
 919                         # add this station to the user database, if required
 920                         my $call = $field[1];
 921                         my $user = DXUser->get_current($call);
 922                         $user = DXUser->new($call) if !$user;
 923
 924                         if ($field[2] == 1) {
 925                                 $user->name($field[3]);
 926                         } elsif ($field[2] == 2) {
 927                                 $user->qth($field[3]);
 928                         } elsif ($field[2] == 3) {
 929                                 my ($lat, $long) = DXBearing::stoll($field[3]);
 930                                 $user->lat($lat);
 931                                 $user->long($long);
 932                                 $user->qra(DXBearing::lltoqra($lat, $long)) unless $user->qra && DXBearing::is_qra($user->qra);
 933                         } elsif ($field[2] == 4) {
 934                                 $user->homenode($field[3]);
 935                         }
 936                         $user->lastoper($main::systime);   # to cut down on excessive for/opers being generated
 937                         $user->put;
 938                         my $ref = Route::get($call) || Route->new($call);
 939
 940                         # input filter if required
 941                         return unless $self->in_filter_route($ref);
 942
 943                         $self->route_pc41($ref, $call, $field[2], $field[3], $field[4]) if $ref && !eph_dup($line);
 944                         return;
 945                 }
 946
 947                 if ($pcno == 43) {
 948                         last SWITCH;
 949                 }
 950
 951                 if ($pcno == 37 || $pcno == 44 || $pcno == 45 || $pcno == 46 || $pcno == 47 || $pcno == 48) {
 952                         DXDb::process($self, $line);
 953                         return;
 954                 }
 955
 956                 if ($pcno == 50) {              # keep alive/user list
 957                         my $call = $field[1];
 958                         my $node = Route::Node::get($call);
 959                         if ($node) {
 960                                 return unless $node->call eq $self->{call};
 961                                 $node->usercount($field[2]);
 962
 963                                 # input filter if required
 964                                 return unless $self->in_filter_route($node);
 965
 966                                 $self->route_pc50($node, $field[2], $field[3]) unless eph_dup($line);
 967                         }
 968                         return;
 969                 }
 970
 971                 if ($pcno == 51) {              # incoming ping requests/answers
 972                         my $to = $field[1];
 973                         my $from = $field[2];
 974                         my $flag = $field[3];
 975
 976                         # is it for us?
 977                         if ($to eq $main::mycall) {
 978                                 if ($flag == 1) {
 979                                         $self->send(pc51($from, $to, '0'));
 980                                 } else {
 981                                         # it's a reply, look in the ping list for this one
 982                                         my $ref = $pings{$from};
 983                                         if ($ref) {
 984                                                 my $tochan =  DXChannel->get($from);
 985                                                 while (@$ref) {
 986                                                         my $r = shift @$ref;
 987                                                         my $dxchan = DXChannel->get($r->{call});
 988                                                         next unless $dxchan;
 989                                                         my $t = tv_interval($r->{t}, [ gettimeofday ]);
 990                                                         if ($dxchan->is_user) {
 991                                                                 my $s = sprintf "%.2f", $t;
 992                                                                 my $ave = sprintf "%.2f", $tochan ? ($tochan->{pingave} || $t) : $t;
 993                                                                 $dxchan->send($dxchan->msg('pingi', $from, $s, $ave))
 994                                                         } elsif ($dxchan->is_node) {
 995                                                                 if ($tochan) {
 996                                                                         $tochan->{nopings} = $tochan->user->nopings || 2; # pump up the timer
 997                                                                         push @{$tochan->{pingtime}}, $t;
 998                                                                         shift @{$tochan->{pingtime}} if @{$tochan->{pingtime}} > 6;
 999                                                                         my $st;
1000                                                                         for (@{$tochan->{pingtime}}) {
1001                                                                                 $st += $_;
1002                                                                         }
1003                                                                         $tochan->{pingave} = $st / @{$tochan->{pingtime}};
1004                                                                 }
1005                                                         }
1006                                                 }
1007                                         }
1008                                 }
1009                         } else {
1010                                 # route down an appropriate thingy
1011                                 $self->route($to, $line);
1012                         }
1013                         return;
1014                 }
1015
1016                 if ($pcno == 75) {              # dunno but route it
1017                         my $call = $field[1];
1018                         if ($call ne $main::mycall) {
1019                                 $self->route($call, $line);
1020                         }
1021                         return;
1022                 }
1023
1024                 if ($pcno == 73) {  # WCY broadcasts
1025                         my $call = $field[1];
1026
1027                         # do some de-duping
1028                         my $d = cltounix($call, sprintf("%02d18Z", $field[2]));
1029                         if (($pcno == 23 && $d < $main::systime - $pc23_max_age) || $d > $main::systime + 1500 || $field[2] < 0 || $field[2] > 23) {
1030                                 dbg("PCPROT: WCY Date ($call $field[2]) out of range") if isdbg('chanerr');
1031                                 return;
1032                         }
1033                         @field = map { unpad($_) } @field;
1034                         if (WCY::dup($d,@field[3..7])) {
1035                                 dbg("PCPROT: Dup WCY Spot ignored\n") if isdbg('chanerr');
1036                                 return;
1037                         }
1038
1039                         my $wcy = WCY::update($d, @field[2..12]);
1040
1041                         my $rep;
1042                         eval {
1043                                 $rep = Local::wwv($self, @field[1..12]);
1044                         };
1045                         # dbg("Local::wcy error $@") if isdbg('local') if $@;
1046                         return if $rep;
1047
1048                         # broadcast to the eager world
1049                         send_wcy_spot($self, $line, $d, @field[2..12]);
1050                         return;
1051                 }
1052
1053                 if ($pcno == 84) { # remote commands (incoming)
1054                         my $call = $field[1];
1055                         if ($call eq $main::mycall) {
1056                                 my $ref = DXUser->get_current($field[2]);
1057                                 my $cref = Route::Node::get($field[2]);
1058                                 Log('rcmd', 'in', $ref->{priv}, $field[2], $field[4]);
1059                                 unless ($field[4] =~ /rcmd/i || !$cref || !$ref || $cref->call ne $ref->homenode) {    # not allowed to relay RCMDS!
1060                                         if ($ref->{priv}) {     # you have to have SOME privilege, the commands have further filtering
1061                                                 $self->{remotecmd} = 1; # for the benefit of any command that needs to know
1062                                                 my $oldpriv = $self->{priv};
1063                                                 $self->{priv} = $ref->{priv};     # assume the user's privilege level
1064                                                 my @in = (DXCommandmode::run_cmd($self, $field[4]));
1065                                                 $self->{priv} = $oldpriv;
1066                                                 for (@in) {
1067                                                         s/\s*$//og;
1068                                                         $self->send(pc85($main::mycall, $field[2], $field[3], "$main::mycall:$_"));
1069                                                         Log('rcmd', 'out', $field[2], $_);
1070                                                 }
1071                                                 delete $self->{remotecmd};
1072                                         } else {
1073                                                 $self->send(pc85($main::mycall, $field[2], $field[3], "$main::mycall:sorry...!"));
1074                                         }
1075                                 } else {
1076                                         $self->send(pc85($main::mycall, $field[2], $field[3],"$main::mycall:your attempt is logged, Tut tut tut...!"));
1077                                 }
1078                         } else {
1079                                 my $ref = DXUser->get_current($call);
1080                                 if ($ref && $ref->is_clx) {
1081                                         $self->route($call, $line);
1082                                 } else {
1083                                         $self->route($call, pc34($field[2], $call, $field[4]));
1084                                 }
1085                         }
1086                         return;
1087                 }
1088
1089                 if ($pcno == 85) {              # remote command replies
1090                         my $call = $field[1];
1091                         if ($call eq $main::mycall) {
1092                                 my $dxchan = DXChannel->get($field[3]);
1093                                 if ($dxchan) {
1094                                         $dxchan->send($field[4]);
1095                                 } else {
1096                                         my $s = $rcmds{$field[2]};
1097                                         if ($s) {
1098                                                 $dxchan = DXChannel->get($s->{call});
1099                                                 $dxchan->send($field[4]) if $dxchan;
1100                                                 delete $rcmds{$field[2]} if !$dxchan;
1101                                         } else {
1102                                                 # send unsolicited ones to the sysop
1103                                                 my $dxchan = DXChannel->get($main::myalias);
1104                                                 $dxchan->send($field[4]) if $dxchan;
1105                                         }
1106                                 }
1107                         } else {
1108                                 my $ref = DXUser->get_current($call);
1109                                 if ($ref && $ref->is_clx) {
1110                                         $self->route($call, $line);
1111                                 } else {
1112                                         $self->route($call, pc35($field[2], $call, $field[4]));
1113                                 }
1114                         }
1115                         return;
1116                 }
1117         }
1118
1119         # if get here then rebroadcast the thing with its Hop count decremented (if
1120         # there is one). If it has a hop count and it decrements to zero then don't
1121         # rebroadcast it.
1122         #
1123         # NOTE - don't arrive here UNLESS YOU WANT this lump of protocol to be
1124         #        REBROADCAST!!!!
1125         #
1126
1127         if (eph_dup($line)) {
1128                 dbg("PCPROT: Ephemeral dup, dropped") if isdbg('chanerr');
1129         } else {
1130                 unless ($self->{isolate}) {
1131                         broadcast_ak1a($line, $self); # send it to everyone but me
1132                 }
1133         }
1134 }
1135
1136 #
1137 # This is called from inside the main cluster processing loop and is used
1138 # for despatching commands that are doing some long processing job
1139 #
1140 sub process
1141 {
1142         my $t = time;
1143         my @dxchan = DXChannel->get_all();
1144         my $dxchan;
1145
1146         foreach $dxchan (@dxchan) {
1147                 next unless $dxchan->is_node();
1148                 next if $dxchan == $me;
1149
1150                 # send a pc50 out on this channel
1151                 $dxchan->{pc50_t} = $main::systime unless exists $dxchan->{pc50_t};
1152                 if ($t >= $dxchan->{pc50_t} + $DXProt::pc50_interval) {
1153                         my $s = pc50($me, scalar DXChannel::get_all_users);
1154                         eph_dup($s);
1155                         $dxchan->send($s);
1156                         $dxchan->{pc50_t} = $t;
1157                 }
1158
1159                 # send a ping out on this channel
1160                 if ($dxchan->{pingint} && $t >= $dxchan->{pingint} + $dxchan->{lastping}) {
1161                         if ($dxchan->{nopings} <= 0) {
1162                                 $dxchan->disconnect;
1163                         } else {
1164                                 addping($main::mycall, $dxchan->call);
1165                                 $dxchan->{nopings} -= 1;
1166                                 $dxchan->{lastping} = $t;
1167                         }
1168                 }
1169         }
1170
1171         # every ten seconds
1172         if ($t - $last10 >= 10) {
1173                 # clean out ephemera
1174
1175                 eph_clean();
1176
1177                 $last10 = $t;
1178         }
1179
1180         if ($main::systime - 3600 > $last_hour) {
1181                 $last_hour = $main::systime;
1182         }
1183 }
1184
1185 #
1186 # finish up a pc context
1187 #
1188
1189 #
1190 # some active measures
1191 #
1192
1193 sub send_dx_spot
1194 {
1195         my $self = shift;
1196         my $line = shift;
1197         my @dxchan = DXChannel->get_all();
1198         my $dxchan;
1199
1200         # send it if it isn't the except list and isn't isolated and still has a hop count
1201         # taking into account filtering and so on
1202         foreach $dxchan (@dxchan) {
1203                 next if $dxchan == $me;
1204                 my $routeit;
1205                 my ($filter, $hops);
1206
1207                 if ($dxchan->{spotsfilter}) {
1208                     ($filter, $hops) = $dxchan->{spotsfilter}->it(@_, $self->{call} );
1209                         next unless $filter;
1210                 }
1211
1212                 if ($dxchan->is_node) {
1213                         next if $dxchan == $self;
1214                         if ($hops) {
1215                                 $routeit = $line;
1216                                 $routeit =~ s/\^H\d+\^\~$/\^H$hops\^\~/;
1217                         } else {
1218                                 $routeit = adjust_hops($dxchan, $line);  # adjust its hop count by node name
1219                                 next unless $routeit;
1220                         }
1221                         if ($filter) {
1222                                 $dxchan->send($routeit) if $routeit;
1223                         } else {
1224                                 $dxchan->send($routeit) unless $dxchan->{isolate} || $self->{isolate};
1225                         }
1226                 } elsif ($dxchan->is_user && $dxchan->{dx}) {
1227                         my $buf = Spot::formatb($dxchan->{user}->wantgrid, $_[0], $_[1], $_[2], $_[3], $_[4]);
1228                         $buf .= "\a\a" if $dxchan->{beep};
1229                         $buf =~ s/\%5E/^/g;
1230                         if ($dxchan->{state} eq 'prompt' || $dxchan->{state} eq 'talk') {
1231                                 $dxchan->send($buf);
1232                         } else {
1233                                 $dxchan->delay($buf);
1234                         }
1235                 }
1236         }
1237 }
1238
1239 sub send_wwv_spot
1240 {
1241         my $self = shift;
1242         my $line = shift;
1243         my @dxchan = DXChannel->get_all();
1244         my $dxchan;
1245         my ($wwv_dxcc, $wwv_itu, $wwv_cq, $org_dxcc, $org_itu, $org_cq) = (0..0);
1246         my @dxcc = Prefix::extract($_[7]);
1247         if (@dxcc > 0) {
1248                 $wwv_dxcc = $dxcc[1]->dxcc;
1249                 $wwv_itu = $dxcc[1]->itu;
1250                 $wwv_cq = $dxcc[1]->cq;
1251         }
1252         @dxcc = Prefix::extract($_[8]);
1253         if (@dxcc > 0) {
1254                 $org_dxcc = $dxcc[1]->dxcc;
1255                 $org_itu = $dxcc[1]->itu;
1256                 $org_cq = $dxcc[1]->cq;
1257         }
1258
1259         # send it if it isn't the except list and isn't isolated and still has a hop count
1260         # taking into account filtering and so on
1261         foreach $dxchan (@dxchan) {
1262                 next if $dxchan == $self;
1263                 next if $dxchan == $me;
1264                 my $routeit;
1265                 my ($filter, $hops);
1266
1267                 if ($dxchan->{wwvfilter}) {
1268                         ($filter, $hops) = $dxchan->{wwvfilter}->it(@_, $self->{call}, $wwv_dxcc, $wwv_itu, $wwv_cq, $org_dxcc, $org_itu, $org_cq);
1269                          next unless $filter;
1270                 }
1271                 if ($dxchan->is_node) {
1272                         if ($hops) {
1273                                 $routeit = $line;
1274                                 $routeit =~ s/\^H\d+\^\~$/\^H$hops\^\~/;
1275                         } else {
1276                                 $routeit = adjust_hops($dxchan, $line);  # adjust its hop count by node name
1277                                 next unless $routeit;
1278                         }
1279                         if ($filter) {
1280                                 $dxchan->send($routeit) if $routeit;
1281                         } else {
1282                                 $dxchan->send($routeit) unless $dxchan->{isolate} || $self->{isolate};
1283
1284                         }
1285                 } elsif ($dxchan->is_user && $dxchan->{wwv}) {
1286                         my $buf = "WWV de $_[6] <$_[1]>:   SFI=$_[2], A=$_[3], K=$_[4], $_[5]";
1287                         $buf .= "\a\a" if $dxchan->{beep};
1288                         if ($dxchan->{state} eq 'prompt' || $dxchan->{state} eq 'talk') {
1289                                 $dxchan->send($buf);
1290                         } else {
1291                                 $dxchan->delay($buf);
1292                         }
1293                 }
1294         }
1295 }
1296
1297 sub send_wcy_spot
1298 {
1299         my $self = shift;
1300         my $line = shift;
1301         my @dxchan = DXChannel->get_all();
1302         my $dxchan;
1303         my ($wcy_dxcc, $wcy_itu, $wcy_cq, $org_dxcc, $org_itu, $org_cq) = (0..0);
1304         my @dxcc = Prefix::extract($_[11]);
1305         if (@dxcc > 0) {
1306                 $wcy_dxcc = $dxcc[1]->dxcc;
1307                 $wcy_itu = $dxcc[1]->itu;
1308                 $wcy_cq = $dxcc[1]->cq;
1309         }
1310         @dxcc = Prefix::extract($_[12]);
1311         if (@dxcc > 0) {
1312                 $org_dxcc = $dxcc[1]->dxcc;
1313                 $org_itu = $dxcc[1]->itu;
1314                 $org_cq = $dxcc[1]->cq;
1315         }
1316
1317         # send it if it isn't the except list and isn't isolated and still has a hop count
1318         # taking into account filtering and so on
1319         foreach $dxchan (@dxchan) {
1320                 next if $dxchan == $me;
1321                 my $routeit;
1322                 my ($filter, $hops);
1323
1324                 if ($dxchan->{wcyfilter}) {
1325                         ($filter, $hops) = $dxchan->{wcyfilter}->it(@_, $self->{call}, $wcy_dxcc, $wcy_itu, $wcy_cq, $org_dxcc, $org_itu, $org_cq);
1326                          next unless $filter;
1327                 }
1328                 if ($dxchan->is_clx || $dxchan->is_spider || $dxchan->is_dxnet) {
1329                         if ($hops) {
1330                                 $routeit = $line;
1331                                 $routeit =~ s/\^H\d+\^\~$/\^H$hops\^\~/;
1332                         } else {
1333                                 $routeit = adjust_hops($dxchan, $line);  # adjust its hop count by node name
1334                                 next unless $routeit;
1335                         }
1336                         if ($filter) {
1337                                 $dxchan->send($routeit) if $routeit;
1338                         } else {
1339                                 $dxchan->send($routeit) unless $dxchan->{isolate} || $self->{isolate};
1340                         }
1341                 } elsif ($dxchan->is_user && $dxchan->{wcy}) {
1342                         my $buf = "WCY de $_[10] <$_[1]> : K=$_[4] expK=$_[5] A=$_[3] R=$_[6] SFI=$_[2] SA=$_[7] GMF=$_[8] Au=$_[9]";
1343                         $buf .= "\a\a" if $dxchan->{beep};
1344                         if ($dxchan->{state} eq 'prompt' || $dxchan->{state} eq 'talk') {
1345                                 $dxchan->send($buf);
1346                         } else {
1347                                 $dxchan->delay($buf);
1348                         }
1349                 }
1350         }
1351 }
1352
1353 # send an announce
1354 sub send_announce
1355 {
1356         my $self = shift;
1357         my $line = shift;
1358         my @dxchan = DXChannel->get_all();
1359         my $dxchan;
1360         my $text = unpad($_[2]);
1361         my $target;
1362         my $to = 'To ';
1363
1364         if ($_[3] eq '*') {     # sysops
1365                 $target = "SYSOP";
1366         } elsif ($_[3] gt ' ') { # speciality list handling
1367                 my ($name) = split /\./, $_[3];
1368                 $target = "$name"; # put the rest in later (if bothered)
1369         }
1370
1371         if ($_[5] eq '1') {
1372                 $target = "WX";
1373                 $to = '';
1374         }
1375         $target = "ALL" if !$target;
1376
1377         Log('ann', $target, $_[0], $text);
1378
1379         # obtain country codes etc
1380         my ($ann_dxcc, $ann_itu, $ann_cq, $org_dxcc, $org_itu, $org_cq) = (0..0);
1381         my @dxcc = Prefix::extract($_[0]);
1382         if (@dxcc > 0) {
1383                 $ann_dxcc = $dxcc[1]->dxcc;
1384                 $ann_itu = $dxcc[1]->itu;
1385                 $ann_cq = $dxcc[1]->cq;
1386         }
1387         @dxcc = Prefix::extract($_[4]);
1388         if (@dxcc > 0) {
1389                 $org_dxcc = $dxcc[1]->dxcc;
1390                 $org_itu = $dxcc[1]->itu;
1391                 $org_cq = $dxcc[1]->cq;
1392         }
1393
1394         # send it if it isn't the except list and isn't isolated and still has a hop count
1395         # taking into account filtering and so on
1396         foreach $dxchan (@dxchan) {
1397                 next if $dxchan == $self;
1398                 next if $dxchan == $me;
1399                 my $routeit;
1400                 my ($filter, $hops);
1401
1402                 if ($dxchan->{annfilter}) {
1403                         ($filter, $hops) = $dxchan->{annfilter}->it(@_, $self->{call}, $ann_dxcc, $ann_itu, $ann_cq, $org_dxcc, $org_itu, $org_cq);
1404                         next unless $filter;
1405                 }
1406                 if ($dxchan->is_node && $_[1] ne $main::mycall) {  # i.e not specifically routed to me
1407                         if ($hops) {
1408                                 $routeit = $line;
1409                                 $routeit =~ s/\^H\d+\^\~$/\^H$hops\^\~/;
1410                         } else {
1411                                 $routeit = adjust_hops($dxchan, $line);  # adjust its hop count by node name
1412                                 next unless $routeit;
1413                         }
1414                         if ($filter) {
1415                                 $dxchan->send($routeit) if $routeit;
1416                         } else {
1417                                 $dxchan->send($routeit) unless $dxchan->{isolate} || $self->{isolate};
1418
1419                         }
1420                 } elsif ($dxchan->is_user) {
1421                         unless ($dxchan->{ann}) {
1422                                 next if $_[0] ne $main::myalias && $_[0] ne $main::mycall;
1423                         }
1424                         next if $target eq 'SYSOP' && $dxchan->{priv} < 5;
1425                         my $buf = "$to$target de $_[0]: $text";
1426                         $buf =~ s/\%5E/^/g;
1427                         $buf .= "\a\a" if $dxchan->{beep};
1428                         if ($dxchan->{state} eq 'prompt' || $dxchan->{state} eq 'talk') {
1429                                 $dxchan->send($buf);
1430                         } else {
1431                                 $dxchan->delay($buf);
1432                         }
1433                 }
1434         }
1435 }
1436
1437 sub send_local_config
1438 {
1439         my $self = shift;
1440         my $n;
1441         my @nodes;
1442         my @localnodes;
1443         my @remotenodes;
1444
1445         dbg('DXProt::send_local_config') if isdbg('trace');
1446
1447         # send our nodes
1448         if ($self->{isolate}) {
1449                 @localnodes = ( $main::routeroot );
1450         } else {
1451                 # create a list of all the nodes that are not connected to this connection
1452                 # and are not themselves isolated, this to make sure that isolated nodes
1453         # don't appear outside of this node
1454                 my @dxchan = grep { $_->call ne $main::mycall && $_->call ne $self->{call} } DXChannel::get_all_nodes();
1455                 @localnodes = map { my $r = Route::Node::get($_->{call}); $r ? $r : () } @dxchan if @dxchan;
1456                 my @intcalls = map { $_->nodes } @localnodes if @localnodes;
1457                 my $ref = Route::Node::get($self->{call});
1458                 my @rnodes = $ref->nodes;
1459                 for my $n (@intcalls) {
1460                         push @remotenodes, Route::Node::get($n) unless grep $n eq $_, @rnodes;
1461                 }
1462                 unshift @localnodes, $main::routeroot;
1463         }
1464
1465         send_route($self, \&pc19, scalar(@localnodes)+scalar(@remotenodes), @localnodes, @remotenodes);
1466
1467         # get all the users connected on the above nodes and send them out
1468         foreach $n (@localnodes, @remotenodes) {
1469                 if ($n) {
1470                         send_route($self, \&pc16, 1, $n, map {my $r = Route::User::get($_); $r ? ($r) : ()} $n->users);
1471                 } else {
1472                         dbg("sent a null value") if isdbg('chanerr');
1473                 }
1474         }
1475 }
1476
1477 #
1478 # route a message down an appropriate interface for a callsign
1479 #
1480 # is called route(to, pcline);
1481 #
1482 sub route
1483 {
1484         my ($self, $call, $line) = @_;
1485
1486         if (ref $self && $call eq $self->{call}) {
1487                 dbg("PCPROT: Trying to route back to source, dropped") if isdbg('chanerr');
1488                 return;
1489         }
1490
1491         # always send it down the local interface if available
1492         my $dxchan = DXChannel->get($call);
1493         unless ($dxchan) {
1494                 my $cl = Route::get($call);
1495                 $dxchan = $cl->dxchan if $cl;
1496                 if (ref $dxchan) {
1497                         if (ref $self && $dxchan eq $self) {
1498                                 dbg("PCPROT: Trying to route back to source, dropped") if isdbg('chanerr');
1499                                 return;
1500                         }
1501                 }
1502         }
1503         if ($dxchan) {
1504                 my $routeit = adjust_hops($dxchan, $line);   # adjust its hop count by node name
1505                 if ($routeit) {
1506                         $dxchan->send($routeit);
1507                 }
1508         } else {
1509                 dbg("PCPROT: No route available, dropped") if isdbg('chanerr');
1510         }
1511 }
1512
1513 # broadcast a message to all clusters taking into account isolation
1514 # [except those mentioned after buffer]
1515 sub broadcast_ak1a
1516 {
1517         my $s = shift;                          # the line to be rebroadcast
1518         my @except = @_;                        # to all channels EXCEPT these (dxchannel refs)
1519         my @dxchan = DXChannel::get_all_nodes();
1520         my $dxchan;
1521
1522         # send it if it isn't the except list and isn't isolated and still has a hop count
1523         foreach $dxchan (@dxchan) {
1524                 next if grep $dxchan == $_, @except;
1525                 next if $dxchan == $me;
1526
1527                 my $routeit = adjust_hops($dxchan, $s);      # adjust its hop count by node name
1528                 $dxchan->send($routeit) unless $dxchan->{isolate} || !$routeit;
1529         }
1530 }
1531
1532 # broadcast a message to all clusters ignoring isolation
1533 # [except those mentioned after buffer]
1534 sub broadcast_all_ak1a
1535 {
1536         my $s = shift;                          # the line to be rebroadcast
1537         my @except = @_;                        # to all channels EXCEPT these (dxchannel refs)
1538         my @dxchan = DXChannel::get_all_nodes();
1539         my $dxchan;
1540
1541         # send it if it isn't the except list and isn't isolated and still has a hop count
1542         foreach $dxchan (@dxchan) {
1543                 next if grep $dxchan == $_, @except;
1544                 next if $dxchan == $me;
1545
1546                 my $routeit = adjust_hops($dxchan, $s);      # adjust its hop count by node name
1547                 $dxchan->send($routeit);
1548         }
1549 }
1550
1551 # broadcast to all users
1552 # storing the spot or whatever until it is in a state to receive it
1553 sub broadcast_users
1554 {
1555         my $s = shift;                          # the line to be rebroadcast
1556         my $sort = shift;           # the type of transmission
1557         my $fref = shift;           # a reference to an object to filter on
1558         my @except = @_;                        # to all channels EXCEPT these (dxchannel refs)
1559         my @dxchan = DXChannel::get_all_users();
1560         my $dxchan;
1561         my @out;
1562
1563         foreach $dxchan (@dxchan) {
1564                 next if grep $dxchan == $_, @except;
1565                 push @out, $dxchan;
1566         }
1567         broadcast_list($s, $sort, $fref, @out);
1568 }
1569
1570 # broadcast to a list of users
1571 sub broadcast_list
1572 {
1573         my $s = shift;
1574         my $sort = shift;
1575         my $fref = shift;
1576         my $dxchan;
1577
1578         foreach $dxchan (@_) {
1579                 my $filter = 1;
1580                 next if $dxchan == $me;
1581
1582                 if ($sort eq 'dx') {
1583                     next unless $dxchan->{dx};
1584                         ($filter) = $dxchan->{spotsfilter}->it(@{$fref}) if ref $fref;
1585                         next unless $filter;
1586                 }
1587                 next if $sort eq 'ann' && !$dxchan->{ann} && $s !~ /^To\s+LOCAL\s+de\s+(?:$main::myalias|$main::mycall)/i;
1588                 next if $sort eq 'wwv' && !$dxchan->{wwv};
1589                 next if $sort eq 'wcy' && !$dxchan->{wcy};
1590                 next if $sort eq 'wx' && !$dxchan->{wx};
1591
1592                 $s =~ s/\a//og unless $dxchan->{beep};
1593
1594                 if ($dxchan->{state} eq 'prompt' || $dxchan->{state} eq 'talk') {
1595                         $dxchan->send($s);
1596                 } else {
1597                         $dxchan->delay($s);
1598                 }
1599         }
1600 }
1601
1602
1603 #
1604 # obtain the hops from the list for this callsign and pc no
1605 #
1606
1607 sub get_hops
1608 {
1609         my $pcno = shift;
1610         my $hops = $DXProt::hopcount{$pcno};
1611         $hops = $DXProt::def_hopcount if !$hops;
1612         return "H$hops";
1613 }
1614
1615 #
1616 # adjust the hop count on a per node basis using the user loadable
1617 # hop table if available or else decrement an existing one
1618 #
1619
1620 sub adjust_hops
1621 {
1622         my $self = shift;
1623         my $s = shift;
1624         my $call = $self->{call};
1625         my $hops;
1626
1627         if (($hops) = $s =~ /\^H(\d+)\^~?$/o) {
1628                 my ($pcno) = $s =~ /^PC(\d\d)/o;
1629                 confess "$call called adjust_hops with '$s'" unless $pcno;
1630                 my $ref = $nodehops{$call} if %nodehops;
1631                 if ($ref) {
1632                         my $newhops = $ref->{$pcno};
1633                         return "" if defined $newhops && $newhops == 0;
1634                         $newhops = $ref->{default} unless $newhops;
1635                         return "" if defined $newhops && $newhops == 0;
1636                         $newhops = $hops if !$newhops;
1637                         $s =~ s/\^H(\d+)(\^~?)$/\^H$newhops$2/ if $newhops;
1638                 } else {
1639                         # simply decrement it
1640                         $hops--;
1641                         return "" if !$hops;
1642                         $s =~ s/\^H(\d+)(\^~?)$/\^H$hops$2/ if $hops;
1643                 }
1644         }
1645         return $s;
1646 }
1647
1648 #
1649 # load hop tables
1650 #
1651 sub load_hops
1652 {
1653         my $self = shift;
1654         return $self->msg('lh1') unless -e "$main::data/hop_table.pl";
1655         do "$main::data/hop_table.pl";
1656         return $@ if $@;
1657         return 0;
1658 }
1659
1660
1661 # add a ping request to the ping queues
1662 sub addping
1663 {
1664         my ($from, $to) = @_;
1665         my $ref = $pings{$to} || [];
1666         my $r = {};
1667         $r->{call} = $from;
1668         $r->{t} = [ gettimeofday ];
1669         route(undef, $to, pc51($to, $main::mycall, 1));
1670         push @$ref, $r;
1671         $pings{$to} = $ref;
1672 }
1673
1674 # add a rcmd request to the rcmd queues
1675 sub addrcmd
1676 {
1677         my ($self, $to, $cmd) = @_;
1678
1679         my $r = {};
1680         $r->{call} = $self->{call};
1681         $r->{t} = $main::systime;
1682         $r->{cmd} = $cmd;
1683         $rcmds{$to} = $r;
1684
1685         my $ref = Route::Node::get($to);
1686         my $dxchan = $ref->dxchan;
1687     if ($dxchan && $dxchan->is_clx) {
1688                 route(undef, $to, pc84($main::mycall, $to, $self->{call}, $cmd));
1689         } else {
1690                 route(undef, $to, pc34($main::mycall, $to, $cmd));
1691         }
1692 }
1693
1694 sub disconnect
1695 {
1696         my $self = shift;
1697         my $pc39flag = shift;
1698         my $call = $self->call;
1699
1700         unless ($pc39flag && $pc39flag == 1) {
1701                 $self->send_now("D", DXProt::pc39($main::mycall, $self->msg('disc1', "System Op")));
1702         }
1703
1704         # do routing stuff
1705         my $node = Route::Node::get($call);
1706         my @rout;
1707         if ($node) {
1708                 @rout = $node->del_nodes;    # at the next level
1709                 @rout = $node->del($main::routeroot);
1710         }
1711
1712         # unbusy and stop and outgoing mail
1713         my $mref = DXMsg::get_busy($call);
1714         $mref->stop_msg($call) if $mref;
1715
1716         # broadcast to all other nodes that all the nodes connected to via me are gone
1717         unless ($pc39flag && $pc39flag == 2) {
1718                 $self->route_pc21(@rout) if @rout;
1719         }
1720
1721         # remove outstanding pings
1722         delete $pings{$call};
1723
1724         # I was the last node visited
1725     $self->user->node($main::mycall);
1726
1727         # send info to all logged in thingies
1728         $self->tell_login('logoutn');
1729
1730         Log('DXProt', $call . " Disconnected");
1731
1732         $self->SUPER::disconnect;
1733 }
1734
1735
1736 #
1737 # send a talk message to this thingy
1738 #
1739 sub talk
1740 {
1741         my ($self, $from, $to, $via, $line) = @_;
1742
1743         $line =~ s/\^/\\5E/g;                   # remove any ^ characters
1744         $self->send(DXProt::pc10($from, $to, $via, $line));
1745         Log('talk', $self->call, $from, $via?$via:$main::mycall, $line);
1746 }
1747
1748 # send it if it isn't the except list and isn't isolated and still has a hop count
1749 # taking into account filtering and so on
1750 sub send_route
1751 {
1752         my $self = shift;
1753         my $generate = shift;
1754         my $no = shift;     # the no of things to filter on
1755         my $routeit;
1756         my ($filter, $hops);
1757         my @rin;
1758
1759         for (; @_ && $no; $no--) {
1760                 my $r = shift;
1761
1762                 if ($self->{routefilter}) {
1763                         $filter = undef;
1764                         if ($r) {
1765                                 ($filter, $hops) = $self->{routefilter}->it($self->{call}, $self->{dxcc}, $self->{itu}, $self->{cq}, $r->call, $r->dxcc, $r->itu, $r->cq);
1766                                 if ($filter) {
1767                                         push @rin, $r;
1768                                 } else {
1769                                         dbg("DXPROT: $self->{call}/" . $r->call . " rejected by output filter") if isdbg('chanerr');
1770                                 }
1771                         } else {
1772                                 dbg("was sent a null value") if isdbg('chanerr');
1773                         }
1774                 } else {
1775                         push @rin, $r;
1776                 }
1777         }
1778         if (@rin) {
1779                 foreach my $line (&$generate(@rin, @_)) {
1780                         if ($hops) {
1781                                 $routeit = $line;
1782                                 $routeit =~ s/\^H\d+\^\~$/\^H$hops\^\~/;
1783                         } else {
1784                                 $routeit = adjust_hops($self, $line);  # adjust its hop count by node name
1785                                 next unless $routeit;
1786                         }
1787                         $self->send($routeit) if $self->{routefilter} || !$self->{isolate};
1788                 }
1789         }
1790 }
1791
1792 sub broadcast_route
1793 {
1794         my $self = shift;
1795         my $generate = shift;
1796         my @dxchan = DXChannel::get_all_nodes();
1797         my $dxchan;
1798         my $line;
1799
1800         foreach $dxchan (@dxchan) {
1801                 next if $dxchan == $self;
1802                 next if $dxchan == $me;
1803                 if ($dxchan->{routefilter} || !$self->{isolate}) {
1804                         $dxchan->send_route($generate, @_)
1805                 } else {
1806                         dbg('DXPROT: isolated') if isdbg('chanerr');
1807                 }
1808         }
1809 }
1810
1811 sub route_pc16
1812 {
1813         my $self = shift;
1814         broadcast_route($self, \&pc16, 1, @_);
1815 }
1816
1817 sub route_pc17
1818 {
1819         my $self = shift;
1820         broadcast_route($self, \&pc17, 1, @_);
1821 }
1822
1823 sub route_pc19
1824 {
1825         my $self = shift;
1826         broadcast_route($self, \&pc19, scalar @_, @_);
1827 }
1828
1829 sub route_pc21
1830 {
1831         my $self = shift;
1832         broadcast_route($self, \&pc21, scalar @_, @_);
1833 }
1834
1835 sub route_pc24
1836 {
1837         my $self = shift;
1838         broadcast_route($self, \&pc24, 1, @_);
1839 }
1840
1841 sub route_pc41
1842 {
1843         my $self = shift;
1844         broadcast_route($self, \&pc41, 1, @_);
1845 }
1846
1847 sub route_pc50
1848 {
1849         my $self = shift;
1850         broadcast_route($self, \&pc50, 1, @_);
1851 }
1852
1853 sub in_filter_route
1854 {
1855         my $self = shift;
1856         my $r = shift;
1857         my ($filter, $hops) = (1, 1);
1858
1859         if ($self->{inroutefilter}) {
1860                 ($filter, $hops) = $self->{inroutefilter}->it($self->{call}, $self->{dxcc}, $self->{itu}, $self->{cq}, $r->call, $r->dxcc, $r->itu, $r->cq);
1861                 dbg("PCPROT: $self->{call}/" . $r->call . ' rejected by in_filter_route') if !$filter && isdbg('chanerr');
1862         }
1863         return $filter;
1864 }
1865
1866 sub eph_dup
1867 {
1868         my $s = shift;
1869
1870         # chop the end off
1871         $s =~ s/\^H\d\d?\^?~?$//;
1872         return 1 if exists $eph{$s};
1873         $eph{$s} = $main::systime;
1874         return undef;
1875 }
1876
1877 sub eph_clean
1878 {
1879         my ($key, $val);
1880
1881         while (($key, $val) = each %eph) {
1882                 if ($main::systime - $val > 90) {
1883                         delete $eph{$key};
1884                 }
1885         }
1886 }
1887
1888 1;
1889 __END__