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
  38 use vars qw($VERSION $BRANCH);
  39 $VERSION = sprintf( "%d.%03d", q$Revision$ =~ /(\d+)\.(\d+)/ );
  40 $BRANCH = sprintf( "%d.%03d", q$Revision$ =~ /\d+\.\d+\.(\d+)\.(\d+)/ ) || 0;
  41 $main::build += $VERSION;
  42 $main::branch += $BRANCH;
  43
  44 use vars qw($me $pc11_max_age $pc23_max_age $last_pc50
  45                         $last_hour $last10 %eph  %pings %rcmds
  46                         %nodehops $baddx $badspotter $badnode $censorpc
  47                         $allowzero $decode_dk0wcy $send_opernam @checklist);
  48
  49 $me = undef;                                    # the channel id for this cluster
  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
  64 @checklist =
  65 (
  66  [ qw(c c m bp bc c) ],                 # pc10
  67  [ qw(f m d t m c c h) ],               # pc11
  68  [ qw(c bc m bp bm p h) ],              # pc12
  69  [ qw(c h) ],                                   #
  70  [ qw(c h) ],                                   #
  71  [ qw(c m h) ],                                 #
  72  undef ,                                                # pc16 has to be validated manually
  73  [ qw(c c h) ],                                 # pc17
  74  [ qw(m n) ],                                   # pc18
  75  undef ,                                                # pc19 has to be validated manually
  76  undef ,                                                # pc20 no validation
  77  [ qw(c m h) ],                                 # pc21
  78  undef ,                                                # pc22 no validation
  79  [ qw(d n n n n m c c h) ],             # pc23
  80  [ qw(c p h) ],                                 # pc24
  81  [ qw(c c n n) ],                               # pc25
  82  [ qw(f m d t m c c bc) ],              # pc26
  83  [ qw(d n n n n m c c bc) ],    # pc27
  84  [ qw(c c m c d t p m bp n p bp bc) ], # pc28
  85  [ qw(c c n m) ],                               # pc29
  86  [ qw(c c n) ],                                 # pc30
  87  [ qw(c c n) ],                                 # pc31
  88  [ qw(c c n) ],                                 # pc32
  89  [ qw(c c n) ],                                 # pc33
  90  [ qw(c c m) ],                                 # pc34
  91  [ qw(c c m) ],                                 # pc35
  92  [ qw(c c m) ],                                 # pc36
  93  [ qw(c c n m) ],                               # pc37
  94  undef,                                                 # pc38 not interested
  95  [ qw(c m) ],                                   # pc39
  96  [ qw(c c m p n) ],                             # pc40
  97  [ qw(c n m h) ],                               # pc41
  98  [ qw(c c n) ],                                 # pc42
  99  undef,                                                 # pc43 don't handle it
 100  [ qw(c c n m m c) ],                   # pc44
 101  [ qw(c c n m) ],                               # pc45
 102  [ qw(c c n) ],                                 # pc46
 103  undef,                                                 # pc47
 104  undef,                                                 # pc48
 105  [ qw(c m h) ],                                 # pc49
 106  [ qw(c n h) ],                                 # pc50
 107  [ qw(c c n) ],                                 # pc51
 108  undef,
 109  undef,
 110  undef,
 111  undef,
 112  undef,
 113  undef,
 114  undef,
 115  undef,
 116  undef,                                                 # pc60
 117  undef,
 118  undef,
 119  undef,
 120  undef,
 121  undef,
 122  undef,
 123  undef,
 124  undef,
 125  undef,
 126  undef,                                                 # pc70
 127  undef,
 128  undef,
 129  [ qw(d n n n n n n m m m c c h) ],     # pc73
 130  undef,
 131  undef,
 132  undef,
 133  undef,
 134  undef,
 135  undef,
 136  undef,                                                 # pc80
 137  undef,
 138  undef,
 139  undef,
 140  [ qw(c c c m) ],                               # pc84
 141  [ qw(c c c m) ],                               # pc85
 142 );
 143
 144 # use the entry in the check list to check the field list presented
 145 # return OK if line NOT in check list (for now)
 146 sub check
 147 {
 148         my $n = shift;
 149         $n -= 10;
 150         return 0 if $n < 0 || $n > @checklist;
 151         my $ref = $checklist[$n];
 152         return 0 unless ref $ref;
 153
 154         my $i;
 155         shift;    # not interested in the first field
 156         for ($i = 0; $i < @$ref; $i++) {
 157                 my ($blank, $act) = $$ref[$i] =~ /^(b?)(\w)$/;
 158                 return 0 unless $act;
 159                 next if $blank && $_[$i] =~ /^[ \*]$/;
 160                 if ($act eq 'c') {
 161                         return $i+1 unless is_callsign($_[$i]);
 162                 } elsif ($act eq 'm') {
 163                         return $i+1 unless is_pctext($_[$i]);
 164                 } elsif ($act eq 'p') {
 165                         return $i+1 unless is_pcflag($_[$i]);
 166                 } elsif ($act eq 'f') {
 167                         return $i+1 unless is_freq($_[$i]);
 168                 } elsif ($act eq 'n') {
 169                         return $i+1 unless $_[$i] =~ /^[\d ]+$/;
 170                 } elsif ($act eq 'h') {
 171                         return $i+1 unless $_[$i] =~ /^H\d\d?$/;
 172                 } elsif ($act eq 'd') {
 173                         return $i+1 unless $_[$i] =~ /^\s*\d+-\w\w\w-[12][90]\d\d$/;
 174                 } elsif ($act eq 't') {
 175                         return $i+1 unless $_[$i] =~ /^[012]\d[012345]\dZ$/;
 176                 }
 177         }
 178         return 0;
 179 }
 180
 181 sub init
 182 {
 183         my $user = DXUser->get($main::mycall);
 184         $DXProt::myprot_version += $main::version*100;
 185         $me = DXProt->new($main::mycall, 0, $user);
 186         $me->{here} = 1;
 187         $me->{state} = "indifferent";
 188         do "$main::data/hop_table.pl" if -e "$main::data/hop_table.pl";
 189         confess $@ if $@;
 190         $me->{sort} = 'S';    # S for spider
 191         $me->{priv} = 9;
 192 #       $Route::Node::me->adddxchan($me);
 193 }
 194
 195 #
 196 # obtain a new connection this is derived from dxchannel
 197 #
 198
 199 sub new
 200 {
 201         my $self = DXChannel::alloc(@_);
 202
 203         # add this node to the table, the values get filled in later
 204         my $pkg = shift;
 205         my $call = shift;
 206         $main::routeroot->add($call, '0000', Route::here(1)) if $call ne $main::mycall;
 207
 208         return $self;
 209 }
 210
 211 # this is how a pc connection starts (for an incoming connection)
 212 # issue a PC38 followed by a PC18, then wait for a PC20 (remembering
 213 # all the crap that comes between).
 214 sub start
 215 {
 216         my ($self, $line, $sort) = @_;
 217         my $call = $self->{call};
 218         my $user = $self->{user};
 219
 220         # log it
 221         my $host = $self->{conn}->{peerhost} || "unknown";
 222         Log('DXProt', "$call connected from $host");
 223
 224         # remember type of connection
 225         $self->{consort} = $line;
 226         $self->{outbound} = $sort eq 'O';
 227         my $priv = $user->priv;
 228         $priv = $user->priv(1) unless $priv;
 229         $self->{priv} = $priv;     # other clusters can always be 'normal' users
 230         $self->{lang} = $user->lang || 'en';
 231         $self->{isolate} = $user->{isolate};
 232         $self->{consort} = $line;       # save the connection type
 233         $self->{here} = 1;
 234         $self->{width} = 80;
 235
 236         # get the output filters
 237         $self->{spotsfilter} = Filter::read_in('spots', $call, 0) || Filter::read_in('spots', 'node_default', 0);
 238         $self->{wwvfilter} = Filter::read_in('wwv', $call, 0) || Filter::read_in('wwv', 'node_default', 0);
 239         $self->{wcyfilter} = Filter::read_in('wcy', $call, 0) || Filter::read_in('wcy', 'node_default', 0);
 240         $self->{annfilter} = Filter::read_in('ann', $call, 0) || Filter::read_in('ann', 'node_default', 0) ;
 241         $self->{routefilter} = Filter::read_in('route', $call, 0) || Filter::read_in('route', 'node_default', 0) unless $self->{isolate} ;
 242
 243
 244         # get the INPUT filters (these only pertain to Clusters)
 245         $self->{inspotsfilter} = Filter::read_in('spots', $call, 1) || Filter::read_in('spots', 'node_default', 1);
 246         $self->{inwwvfilter} = Filter::read_in('wwv', $call, 1) || Filter::read_in('wwv', 'node_default', 1);
 247         $self->{inwcyfilter} = Filter::read_in('wcy', $call, 1) || Filter::read_in('wcy', 'node_default', 1);
 248         $self->{inannfilter} = Filter::read_in('ann', $call, 1) || Filter::read_in('ann', 'node_default', 1);
 249         $self->{inroutefilter} = Filter::read_in('route', $call, 1) || Filter::read_in('route', 'node_default', 1) unless $self->{isolate};
 250
 251         # set unbuffered and no echo
 252         $self->send_now('B',"0");
 253         $self->send_now('E',"0");
 254
 255         # ping neighbour node stuff
 256         my $ping = $user->pingint;
 257         $ping = 5*60 unless defined $ping;
 258         $self->{pingint} = $ping;
 259         $self->{nopings} = $user->nopings || 2;
 260         $self->{pingtime} = [ ];
 261         $self->{pingave} = 999;
 262         $self->{lastping} = $main::systime;
 263
 264         # send initialisation string
 265         unless ($self->{outbound}) {
 266                 $self->send(pc18());
 267         }
 268
 269         $self->state('init');
 270         $self->{pc50_t} = $main::systime;
 271
 272         # send info to all logged in thingies
 273         $self->tell_login('loginn');
 274 }
 275
 276 #
 277 # This is the normal pcxx despatcher
 278 #
 279 sub normal
 280 {
 281         my ($self, $line) = @_;
 282         my @field = split /\^/, $line;
 283         return unless @field;
 284
 285         pop @field if $field[-1] eq '~';
 286
 287 #       print join(',', @field), "\n";
 288
 289
 290         # process PC frames, this will fail unless the frame starts PCnn
 291         my ($pcno) = $field[0] =~ /^PC(\d\d)/; # just get the number
 292         return unless $pcno;
 293         return if $pcno < 10 || $pcno > 99;
 294
 295         # check for and dump bad protocol messages
 296         my $n = check($pcno, @field);
 297         if ($n) {
 298                 dbg("PCPROT: bad field $n, dumped (" . parray($checklist[$pcno-10]) . ")") if isdbg('chanerr');
 299                 return;
 300         }
 301
 302         # local processing 1
 303         my $pcr;
 304         eval {
 305                 $pcr = Local::pcprot($self, $pcno, @field);
 306         };
 307 #       dbg("Local::pcprot error $@") if isdbg('local') if $@;
 308         return if $pcr;
 309
 310  SWITCH: {
 311                 if ($pcno == 10) {              # incoming talk
 312
 313                         # will we allow it at all?
 314                         if ($censorpc) {
 315                                 my @bad;
 316                                 if (@bad = BadWords::check($field[3])) {
 317                                         dbg("PCPROT: Bad words: @bad, dropped") if isdbg('chanerr');
 318                                         return;
 319                                 }
 320                         }
 321
 322                         # is it for me or one of mine?
 323                         my ($to, $via, $call, $dxchan);
 324                         if ($field[5] gt ' ') {
 325                                 $call = $via = $field[2];
 326                                 $to = $field[5];
 327                         } else {
 328                                 $call = $to = $field[2];
 329                         }
 330                         $dxchan = DXChannel->get($main::myalias) if $call eq $main::mycall;
 331                         $dxchan = DXChannel->get($call) unless $dxchan;
 332                         if ($dxchan && $dxchan->is_user) {
 333                                 $field[3] =~ s/\%5E/^/g;
 334                                 $dxchan->talk($field[1], $to, $via, $field[3]);
 335                         } else {
 336                                 $self->route($field[2], $line); # relay it on its way
 337                         }
 338                         return;
 339                 }
 340
 341                 if ($pcno == 11 || $pcno == 26) { # dx spot
 342
 343                         # route 'foreign' pc26s
 344                         if ($pcno == 26) {
 345                                 if ($field[7] ne $main::mycall) {
 346                                         $self->route($field[7], $line);
 347                                         return;
 348                                 }
 349                         }
 350
 351                         # if this is a 'nodx' node then ignore it
 352                         if ($badnode->in($field[7])) {
 353                                 dbg("PCPROT: Bad Node, dropped") if isdbg('chanerr');
 354                                 return;
 355                         }
 356
 357                         # if this is a 'bad spotter' user then ignore it
 358                         if ($badspotter->in($field[6])) {
 359                                 dbg("PCPROT: Bad Spotter, dropped") if isdbg('chanerr');
 360                                 return;
 361                         }
 362
 363                         # convert the date to a unix date
 364                         my $d = cltounix($field[3], $field[4]);
 365                         # bang out (and don't pass on) if date is invalid or the spot is too old (or too young)
 366                         if (!$d || ($pcno == 11 && ($d < $main::systime - $pc11_max_age || $d > $main::systime + 900))) {
 367                                 dbg("PCPROT: Spot ignored, invalid date or out of range ($field[3] $field[4])\n") if isdbg('chanerr');
 368                                 return;
 369                         }
 370
 371                         # is it 'baddx'
 372                         if ($baddx->in($field[2])) {
 373                                 dbg("PCPROT: Bad DX spot, ignored") if isdbg('chanerr');
 374                                 return;
 375                         }
 376
 377                         # do some de-duping
 378                         $field[5] =~ s/^\s+//;      # take any leading blanks off
 379                         $field[2] = unpad($field[2]);   # take off leading and trailing blanks from spotted callsign
 380                         if ($field[2] =~ /BUST\w*$/) {
 381                                 dbg("PCPROT: useless 'BUSTED' spot") if isdbg('chanerr');
 382                                 return;
 383                         }
 384                         if (Spot::dup($field[1], $field[2], $d, $field[5])) {
 385                                 dbg("PCPROT: Duplicate Spot ignored\n") if isdbg('chanerr');
 386                                 return;
 387                         }
 388                         if ($censorpc) {
 389                                 my @bad;
 390                                 if (@bad = BadWords::check($field[5])) {
 391                                         dbg("PCPROT: Bad words: @bad, dropped") if isdbg('chanerr');
 392                                         return;
 393                                 }
 394                         }
 395
 396                         my @spot = Spot::prepare($field[1], $field[2], $d, $field[5], $field[6], $field[7]);
 397                         # global spot filtering on INPUT
 398                         if ($self->{inspotsfilter}) {
 399                                 my ($filter, $hops) = $self->{inspotsfilter}->it(@spot);
 400                                 unless ($filter) {
 401                                         dbg("PCPROT: Rejected by input spot filter") if isdbg('chanerr');
 402                                         return;
 403                                 }
 404                         }
 405
 406                         # add it
 407                         Spot::add(@spot);
 408
 409             #
 410                         # @spot at this point contains:-
 411             # freq, spotted call, time, text, spotter, spotted cc, spotters cc, orig node
 412                         # then  spotted itu, spotted cq, spotters itu, spotters cq
 413                         # you should be able to route on any of these
 414             #
 415
 416                         # fix up qra locators of known users
 417                         my $user = DXUser->get_current($spot[4]);
 418                         if ($user) {
 419                                 my $qra = $user->qra;
 420                                 unless ($qra && is_qra($qra)) {
 421                                         my $lat = $user->lat;
 422                                         my $long = $user->long;
 423                                         if (defined $lat && defined $long) {
 424                                                 $user->qra(DXBearing::lltoqra($lat, $long));
 425                                                 $user->put;
 426                                         }
 427                                 }
 428
 429                                 # send a remote command to a distant cluster if it is visible and there is no
 430                                 # qra locator and we havn't done it for a month.
 431
 432                                 unless ($user->qra) {
 433                                         my $node;
 434                                         my $to = $user->homenode;
 435                                         my $last = $user->lastoper || 0;
 436                                         if ($send_opernam && $to && $to ne $main::mycall && $main::systime > $last + $DXUser::lastoperinterval && ($node = Route::Node::get($to)) ) {
 437                                                 my $cmd = "forward/opernam $spot[4]";
 438                                                 # send the rcmd but we aren't interested in the replies...
 439                                                 my $dxchan = $node->dxchan;
 440                                                 if ($dxchan && $dxchan->is_clx) {
 441                                                         route(undef, $to, pc84($main::mycall, $to, $main::mycall, $cmd));
 442                                                 } else {
 443                                                         route(undef, $to, pc34($main::mycall, $to, $cmd));
 444                                                 }
 445                                                 if ($to ne $field[7]) {
 446                                                         $to = $field[7];
 447                                                         $node = Route::Node::get($to);
 448                                                         if ($node) {
 449                                                                 $dxchan = $node->dxchan;
 450                                                                 if ($dxchan && $dxchan->is_clx) {
 451                                                                         route(undef, $to, pc84($main::mycall, $to, $main::mycall, $cmd));
 452                                                                 } else {
 453                                                                         route(undef, $to, pc34($main::mycall, $to, $cmd));
 454                                                                 }
 455                                                         }
 456                                                 }
 457                                                 $user->lastoper($main::systime);
 458                                                 $user->put;
 459                                         }
 460                                 }
 461                         }
 462
 463                         # local processing
 464                         my $r;
 465                         eval {
 466                                 $r = Local::spot($self, @spot);
 467                         };
 468 #                       dbg("Local::spot1 error $@") if isdbg('local') if $@;
 469                         return if $r;
 470
 471                         # DON'T be silly and send on PC26s!
 472                         return if $pcno == 26;
 473
 474                         # send out the filtered spots
 475                         send_dx_spot($self, $line, @spot) if @spot;
 476                         return;
 477                 }
 478
 479                 if ($pcno == 12) {              # announces
 480                         # announce duplicate checking
 481                         $field[3] =~ s/^\s+//;  # remove leading blanks
 482                         if (AnnTalk::dup($field[1], $field[2], $field[3])) {
 483                                 dbg("PCPROT: Duplicate Announce ignored") if isdbg('chanerr');
 484                                 return;
 485                         }
 486
 487                         if ($censorpc) {
 488                                 my @bad;
 489                                 if (@bad = BadWords::check($field[3])) {
 490                                         dbg("PCPROT: Bad words: @bad, dropped") if isdbg('chanerr');
 491                                         return;
 492                                 }
 493                         }
 494
 495                         if ($field[2] eq '*' || $field[2] eq $main::mycall) {
 496
 497                                 # global ann filtering on INPUT
 498                                 if ($self->{inannfilter}) {
 499                                         my ($ann_dxcc, $ann_itu, $ann_cq, $org_dxcc, $org_itu, $org_cq) = (0..0);
 500                                         my @dxcc = Prefix::extract($field[1]);
 501                                         if (@dxcc > 0) {
 502                                                 $ann_dxcc = $dxcc[1]->dxcc;
 503                                                 $ann_itu = $dxcc[1]->itu;
 504                                                 $ann_cq = $dxcc[1]->cq();
 505                                         }
 506                                         @dxcc = Prefix::extract($field[5]);
 507                                         if (@dxcc > 0) {
 508                                                 $org_dxcc = $dxcc[1]->dxcc;
 509                                                 $org_itu = $dxcc[1]->itu;
 510                                                 $org_cq = $dxcc[1]->cq();
 511                                         }
 512                                         my ($filter, $hops) = $self->{inannfilter}->it(@field[1..6], $self->{call},
 513                                                                                                         $ann_dxcc, $ann_itu, $ann_cq, $org_dxcc, $org_itu, $org_cq);
 514                                         unless ($filter) {
 515                                                 dbg("PCPROT: Rejected by input announce filter") if isdbg('chanerr');
 516                                                 return;
 517                                         }
 518                                 }
 519
 520                                 # send it
 521                                 $self->send_announce($line, @field[1..6]);
 522                         } else {
 523                                 $self->route($field[2], $line);
 524                         }
 525
 526                         return;
 527                 }
 528
 529                 if ($pcno == 13) {
 530                         last SWITCH;
 531                 }
 532                 if ($pcno == 14) {
 533                         last SWITCH;
 534                 }
 535                 if ($pcno == 15) {
 536                         last SWITCH;
 537                 }
 538
 539                 if ($pcno == 16) {              # add a user
 540
 541                         # general checks
 542                         my $dxchan;
 543                         my $ncall = $field[1];
 544                         my $newline = "PC16^";
 545
 546                         if ($ncall eq $main::mycall) {
 547                                 dbg("PCPROT: trying to alter config on this node from outside!") if isdbg('chanerr');
 548                                 return;
 549                         }
 550                         $dxchan = DXChannel->get($ncall);
 551                         if ($dxchan && $dxchan ne $self) {
 552                                 dbg("PCPROT: PC16 from $self->{call} trying to alter locally connected $ncall, ignored!") if isdbg('chanerr');
 553                                 return;
 554                         }
 555                         my $parent = Route::Node::get($ncall);
 556                         unless ($parent) {
 557                                 dbg("PCPROT: Node $ncall not in config") if isdbg('chanerr');
 558                                 return;
 559                         }
 560
 561                         # input filter if required
 562                         return unless $self->in_filter_route($parent);
 563
 564                         my $i;
 565                         my @rout;
 566                         for ($i = 2; $i < $#field; $i++) {
 567                                 my ($call, $conf, $here) = $field[$i] =~ /^(\S+) (\S) (\d)/o;
 568                                 next unless $call && $conf && defined $here && is_callsign($call);
 569                                 next if $call eq $main::mycall;
 570
 571                                 eph_del_regex("^PC17\^$call\^$ncall");
 572
 573                                 $conf = $conf eq '*';
 574
 575                                 # reject this if we think it is a node already
 576                                 my $r = Route::Node::get($call);
 577                                 my $u = DXUser->get_current($call) unless $r;
 578                                 if ($r || ($u && $u->is_node)) {
 579                                         dbg("PCPROT: $call is a node") if isdbg('chanerr');
 580                                         next;
 581                                 }
 582
 583                                 $r = Route::User::get($call);
 584                                 my $flags = Route::here($here)|Route::conf($conf);
 585
 586                                 if ($r) {
 587                                         if ($r->flags != $flags) {
 588                                                 $r->flags($flags);
 589                                                 push @rout, $r;
 590                                         }
 591                                         $r->addparent($parent);
 592                                 } else {
 593                                         push @rout, $parent->add_user($call, $flags);
 594                                 }
 595
 596                                 # add this station to the user database, if required
 597                                 $call =~ s/-\d+$//o;        # remove ssid for users
 598                                 my $user = DXUser->get_current($call);
 599                                 $user = DXUser->new($call) if !$user;
 600                                 $user->homenode($parent->call) if !$user->homenode;
 601                                 $user->node($parent->call);
 602                                 $user->lastin($main::systime) unless DXChannel->get($call);
 603                                 $user->put;
 604                         }
 605
 606                         if (eph_dup($line)) {
 607                                 dbg("PCPROT: dup PC16 detected") if isdbg('chanerr');
 608                                 return;
 609                         }
 610
 611                         # queue up any messages (look for privates only)
 612                         DXMsg::queue_msg(1) if $self->state eq 'normal';
 613
 614                         $self->route_pc16($parent, @rout) if @rout;
 615                         return;
 616                 }
 617
 618                 if ($pcno == 17) {              # remove a user
 619                         my $dxchan;
 620                         my $ncall = $field[2];
 621                         my $ucall = $field[1];
 622
 623                         eph_del_regex("^PC16.*$ncall.*$ucall");
 624
 625                         if ($ncall eq $main::mycall) {
 626                                 dbg("PCPROT: trying to alter config on this node from outside!") if isdbg('chanerr');
 627                                 return;
 628                         }
 629                         $dxchan = DXChannel->get($ncall);
 630                         if ($dxchan && $dxchan ne $self) {
 631                                 dbg("PCPROT: PC17 from $self->{call} trying to alter locally connected $ncall, ignored!") if isdbg('chanerr');
 632                                 return;
 633                         }
 634
 635                         my $uref = Route::User::get($ucall);
 636                         unless ($uref) {
 637                                 dbg("PCPROT: Route::User $ucall not in config") if isdbg('chanerr');
 638                                 return;
 639                         }
 640                         my $parent = Route::Node::get($ncall);
 641                         unless ($parent) {
 642                                 dbg("PCPROT: Route::Node $ncall not in config") if isdbg('chanerr');
 643                                 return;
 644                         }
 645
 646                         # input filter if required
 647                         return unless $self->in_filter_route($parent);
 648
 649                         my @rout = $parent->del_user($uref);
 650
 651                         if (eph_dup($line)) {
 652                                 dbg("PCPROT: dup PC17 detected") if isdbg('chanerr');
 653                                 return;
 654                         }
 655
 656                         $self->route_pc17($parent, @rout) if @rout;
 657                         return;
 658                 }
 659
 660                 if ($pcno == 18) {              # link request
 661                         $self->state('init');
 662
 663                         # first clear out any nodes on this dxchannel
 664                         my $parent = Route::Node::get($self->{call});
 665                         my @rout = $parent->del_nodes;
 666                         $self->route_pc21(@rout, $parent) if @rout;
 667                         $self->send_local_config();
 668                         $self->send(pc20());
 669                         return;             # we don't pass these on
 670                 }
 671
 672                 if ($pcno == 19) {              # incoming cluster list
 673                         my $i;
 674                         my $newline = "PC19^";
 675
 676                         # new routing list
 677                         my @rout;
 678                         my $parent = Route::Node::get($self->{call});
 679                         unless ($parent) {
 680                                 dbg("DXPROT: my parent $self->{call} has disappeared");
 681                                 $self->disconnect;
 682                                 return;
 683                         }
 684
 685                         # parse the PC19
 686                         for ($i = 1; $i < $#field-1; $i += 4) {
 687                                 my $here = $field[$i];
 688                                 my $call = uc $field[$i+1];
 689                                 my $conf = $field[$i+2];
 690                                 my $ver = $field[$i+3];
 691                                 next unless defined $here && defined $conf && is_callsign($call);
 692
 693                                 eph_del_regex("^PC(?:21\^$call|17\^[^\^]+\^$call)");
 694
 695                                 # check for sane parameters
 696                                 $ver = 5000 if $ver eq '0000';
 697                                 next if $ver < 5000; # only works with version 5 software
 698                                 next if length $call < 3; # min 3 letter callsigns
 699                                 next if $call eq $main::mycall;
 700
 701                                 # update it if required
 702                                 my $r = Route::Node::get($call);
 703                                 my $flags = Route::here($here)|Route::conf($conf);
 704                                 if ($r) {
 705                                         my $ar;
 706                                         if ($call ne $parent->call) {
 707                                                 if ($self->in_filter_route($r)) {
 708                                                         $ar = $parent->add($call, $ver, $flags);
 709                                                         push @rout, $ar if $ar;
 710                                                 } else {
 711                                                         next;
 712                                                 }
 713                                         }
 714                                         if ($r->version ne $ver || $r->flags != $flags) {
 715                                                 $r->version($ver);
 716                                                 $r->flags($flags);
 717                                                 push @rout, $r unless $ar;
 718                                         }
 719                                 } else {
 720                                         if ($call eq $self->{call}) {
 721                                                 dbg("DXPROT: my channel route for $call has disappeared");
 722                                                 next;
 723                                         };
 724
 725                                         my $new = Route->new($call);          # throw away
 726                                     if ($self->in_filter_route($new)) {
 727                                                 my $r = $parent->add($call, $ver, $flags);
 728                                                 push @rout, $r;
 729                                         } else {
 730                                                 next;
 731                                         }
 732                                 }
 733
 734                                 # unbusy and stop and outgoing mail (ie if somehow we receive another PC19 without a disconnect)
 735                                 my $mref = DXMsg::get_busy($call);
 736                                 $mref->stop_msg($call) if $mref;
 737
 738                                 # add this station to the user database, if required (don't remove SSID from nodes)
 739                                 my $user = DXUser->get_current($call);
 740                                 if (!$user) {
 741                                         $user = DXUser->new($call);
 742                                         $user->sort('A');
 743                                         $user->priv(1);                   # I have relented and defaulted nodes
 744                                         $user->lockout(1);
 745                                         $user->homenode($call);
 746                                         $user->node($call);
 747                                 }
 748                                 $user->lastin($main::systime) unless DXChannel->get($call);
 749                                 $user->put;
 750                         }
 751
 752                         if (eph_dup($line)) {
 753                                 dbg("PCPROT: dup PC19 detected") if isdbg('chanerr');
 754                                 return;
 755                         }
 756
 757                         $self->route_pc19(@rout) if @rout;
 758                         return;
 759                 }
 760
 761                 if ($pcno == 20) {              # send local configuration
 762                         $self->send_local_config();
 763                         $self->send(pc22());
 764                         $self->state('normal');
 765                         $self->{lastping} = 0;
 766                         return;
 767                 }
 768
 769                 if ($pcno == 21) {              # delete a cluster from the list
 770                         my $call = uc $field[1];
 771
 772                         eph_del_regex("^PC1[79].*$call");
 773
 774                         my @rout;
 775                         my $parent = Route::Node::get($self->{call});
 776                         unless ($parent) {
 777                                 dbg("DXPROT: my parent $self->{call} has disappeared");
 778                                 $self->disconnect;
 779                                 return;
 780                         }
 781                         my $node = Route::Node::get($call);
 782                         if ($call ne $main::mycall) { # don't allow malicious buggers to disconnect me!
 783                                 if ($call eq $self->{call}) {
 784                                         dbg("PCPROT: Trying to disconnect myself with PC21") if isdbg('chanerr');
 785                                         return;
 786                                 }
 787
 788                                 if ($node) {
 789                                         # input filter it
 790                                         return unless $self->in_filter_route($node);
 791
 792                                         # routing objects
 793                                         push @rout, $node->del($parent);
 794                                 }
 795                         } else {
 796                                 dbg("PCPROT: I WILL _NOT_ be disconnected!") if isdbg('chanerr');
 797                                 return;
 798                         }
 799
 800                         if (eph_dup($line)) {
 801                                 dbg("PCPROT: dup PC21 detected") if isdbg('chanerr');
 802                                 return;
 803                         }
 804
 805                         $self->route_pc21(@rout) if @rout;
 806                         return;
 807                 }
 808
 809                 if ($pcno == 22) {
 810                         $self->state('normal');
 811                         $self->{lastping} = 0;
 812                         return;
 813                 }
 814
 815                 if ($pcno == 23 || $pcno == 27) { # WWV info
 816
 817                         # route 'foreign' pc27s
 818                         if ($pcno == 27) {
 819                                 if ($field[8] ne $main::mycall) {
 820                                         $self->route($field[8], $line);
 821                                         return;
 822                                 }
 823                         }
 824
 825                         # do some de-duping
 826                         my $d = cltounix($field[1], sprintf("%02d18Z", $field[2]));
 827                         my $sfi = unpad($field[3]);
 828                         my $k = unpad($field[4]);
 829                         my $i = unpad($field[5]);
 830                         my ($r) = $field[6] =~ /R=(\d+)/;
 831                         $r = 0 unless $r;
 832                         if (($pcno == 23 && $d < $main::systime - $pc23_max_age) || $d > $main::systime + 1500 || $field[2] < 0 || $field[2] > 23) {
 833                                 dbg("PCPROT: WWV Date ($field[1] $field[2]) out of range") if isdbg('chanerr');
 834                                 return;
 835                         }
 836                         if (Geomag::dup($d,$sfi,$k,$i,$field[6])) {
 837                                 dbg("PCPROT: Dup WWV Spot ignored\n") if isdbg('chanerr');
 838                                 return;
 839                         }
 840                         $field[7] =~ s/-\d+$//o;            # remove spotter's ssid
 841
 842                         my $wwv = Geomag::update($d, $field[2], $sfi, $k, $i, @field[6..8], $r);
 843
 844                         my $rep;
 845                         eval {
 846                                 $rep = Local::wwv($self, $field[1], $field[2], $sfi, $k, $i, @field[6..8], $r);
 847                         };
 848 #                       dbg("Local::wwv2 error $@") if isdbg('local') if $@;
 849                         return if $rep;
 850
 851                         # DON'T be silly and send on PC27s!
 852                         return if $pcno == 27;
 853
 854                         # broadcast to the eager world
 855                         send_wwv_spot($self, $line, $d, $field[2], $sfi, $k, $i, @field[6..8]);
 856                         return;
 857                 }
 858
 859                 if ($pcno == 24) {              # set here status
 860                         my $call = uc $field[1];
 861                         my ($nref, $uref);
 862                         $nref = Route::Node::get($call);
 863                         $uref = Route::User::get($call);
 864                         return unless $nref || $uref;   # if we don't know where they are, it's pointless sending it on
 865
 866                         unless (eph_dup($line)) {
 867                                 $nref->here($field[2]) if $nref;
 868                                 $uref->here($field[2]) if $uref;
 869                                 my $ref = $nref || $uref;
 870                                 return unless $self->in_filter_route($ref);
 871                                 $self->route_pc24($ref, $field[3]);
 872                         }
 873                         return;
 874                 }
 875
 876                 if ($pcno == 25) {      # merge request
 877                         if ($field[1] ne $main::mycall) {
 878                                 $self->route($field[1], $line);
 879                                 return;
 880                         }
 881                         if ($field[2] eq $main::mycall) {
 882                                 dbg("PCPROT: Trying to merge to myself, ignored") if isdbg('chanerr');
 883                                 return;
 884                         }
 885
 886                         Log('DXProt', "Merge request for $field[3] spots and $field[4] WWV from $field[2]");
 887
 888                         # spots
 889                         if ($field[3] > 0) {
 890                                 my @in = reverse Spot::search(1, undef, undef, 0, $field[3]);
 891                                 my $in;
 892                                 foreach $in (@in) {
 893                                         $self->send(pc26(@{$in}[0..4], $field[2]));
 894                                 }
 895                         }
 896
 897                         # wwv
 898                         if ($field[4] > 0) {
 899                                 my @in = reverse Geomag::search(0, $field[4], time, 1);
 900                                 my $in;
 901                                 foreach $in (@in) {
 902                                         $self->send(pc27(@{$in}[0..5], $field[2]));
 903                                 }
 904                         }
 905                         return;
 906                 }
 907
 908                 if (($pcno >= 28 && $pcno <= 33) || $pcno == 40 || $pcno == 42 || $pcno == 49) { # mail/file handling
 909                         if ($pcno == 49 || $field[1] eq $main::mycall) {
 910                                 DXMsg::process($self, $line);
 911                         } else {
 912                                 $self->route($field[1], $line) unless $self->is_clx;
 913                         }
 914                         return;
 915                 }
 916
 917                 if ($pcno == 34 || $pcno == 36) { # remote commands (incoming)
 918                         $self->process_rcmd($field[1], $field[2], $field[2], $field[3]);
 919                         return;
 920                 }
 921
 922                 if ($pcno == 35) {              # remote command replies
 923                         $self->process_rcmd_reply($field[1], $field[2], $field[1], $field[3]);
 924                         return;
 925                 }
 926
 927                 # for pc 37 see 44 onwards
 928
 929                 if ($pcno == 38) {              # node connected list from neighbour
 930                         return;
 931                 }
 932
 933                 if ($pcno == 39) {              # incoming disconnect
 934                         if ($field[1] eq $self->{call}) {
 935                                 $self->disconnect(1);
 936                                 eph_del_regex("^PC(?:1[679]|21).*$field[1]");
 937                         } else {
 938                                 dbg("PCPROT: came in on wrong channel") if isdbg('chanerr');
 939                         }
 940                         return;
 941                 }
 942
 943                 if ($pcno == 41) {              # user info
 944                         my $call = $field[1];
 945
 946                         # input filter if required
 947 #                       my $ref = Route::get($call) || Route->new($call);
 948 #                       return unless $self->in_filter_route($ref);
 949
 950                         if ($field[3] eq $field[2]) {
 951                                 dbg('PCPROT: invalid value') if isdbg('chanerr');
 952                                 return;
 953                         }
 954
 955                         # add this station to the user database, if required
 956                         my $user = DXUser->get_current($call);
 957                         $user = DXUser->new($call) if !$user;
 958
 959                         if ($field[2] == 1) {
 960                                 $user->name($field[3]);
 961                         } elsif ($field[2] == 2) {
 962                                 $user->qth($field[3]);
 963                         } elsif ($field[2] == 3) {
 964                                 if (is_latlong($field[3])) {
 965                                         my ($lat, $long) = DXBearing::stoll($field[3]);
 966                                         $user->lat($lat);
 967                                         $user->long($long);
 968                                         $user->qra(DXBearing::lltoqra($lat, $long));
 969                                 } else {
 970                                         dbg('PCPROT: not a valid lat/long') if isdbg('chanerr');
 971                                         return;
 972                                 }
 973                         } elsif ($field[2] == 4) {
 974                                 $user->homenode($field[3]);
 975                         } elsif ($field[2] == 5) {
 976                                 if (is_qra($field[3])) {
 977                                         my ($lat, $long) = DXBearing::qratoll($field[3]);
 978                                         $user->lat($lat);
 979                                         $user->long($long);
 980                                         $user->qra($field[3]);
 981                                 } else {
 982                                         dbg('PCPROT: not a valid QRA locator') if isdbg('chanerr');
 983                                         return;
 984                                 }
 985                         }
 986                         $user->lastoper($main::systime);   # to cut down on excessive for/opers being generated
 987                         $user->put;
 988
 989 #  perhaps this IS what we want after all
 990 #                       $self->route_pc41($ref, $call, $field[2], $field[3], $field[4]);
 991 #                       return;
 992                 }
 993
 994                 if ($pcno == 43) {
 995                         last SWITCH;
 996                 }
 997
 998                 if ($pcno == 37 || $pcno == 44 || $pcno == 45 || $pcno == 46 || $pcno == 47 || $pcno == 48) {
 999                         DXDb::process($self, $line);
1000                         return;
1001                 }
1002
1003                 if ($pcno == 50) {              # keep alive/user list
1004                         my $call = $field[1];
1005                         my $node = Route::Node::get($call);
1006                         if ($node) {
1007                                 return unless $node->call eq $self->{call};
1008                                 $node->usercount($field[2]);
1009
1010                                 # input filter if required
1011                                 return unless $self->in_filter_route($node);
1012
1013                                 $self->route_pc50($node, $field[2], $field[3]) unless eph_dup($line);
1014                         }
1015                         return;
1016                 }
1017
1018                 if ($pcno == 51) {              # incoming ping requests/answers
1019                         my $to = $field[1];
1020                         my $from = $field[2];
1021                         my $flag = $field[3];
1022
1023
1024                         # is it for us?
1025                         if ($to eq $main::mycall) {
1026                                 if ($flag == 1) {
1027                                         $self->send(pc51($from, $to, '0'));
1028                                 } else {
1029                                         # it's a reply, look in the ping list for this one
1030                                         my $ref = $pings{$from};
1031                                         if ($ref) {
1032                                                 my $tochan =  DXChannel->get($from);
1033                                                 while (@$ref) {
1034                                                         my $r = shift @$ref;
1035                                                         my $dxchan = DXChannel->get($r->{call});
1036                                                         next unless $dxchan;
1037                                                         my $t = tv_interval($r->{t}, [ gettimeofday ]);
1038                                                         if ($dxchan->is_user) {
1039                                                                 my $s = sprintf "%.2f", $t;
1040                                                                 my $ave = sprintf "%.2f", $tochan ? ($tochan->{pingave} || $t) : $t;
1041                                                                 $dxchan->send($dxchan->msg('pingi', $from, $s, $ave))
1042                                                         } elsif ($dxchan->is_node) {
1043                                                                 if ($tochan) {
1044                                                                         my $nopings = $tochan->user->nopings || 2;
1045                                                                         push @{$tochan->{pingtime}}, $t;
1046                                                                         shift @{$tochan->{pingtime}} if @{$tochan->{pingtime}} > 6;
1047
1048                                                                         # cope with a missed ping, this means you must set the pingint large enough
1049                                                                         if ($t > $tochan->{pingint}  && $t < 2 * $tochan->{pingint} ) {
1050                                                                                 $t -= $tochan->{pingint};
1051                                                                         }
1052
1053                                                                         # calc smoothed RTT a la TCP
1054                                                                         if (@{$tochan->{pingtime}} == 1) {
1055                                                                                 $tochan->{pingave} = $t;
1056                                                                         } else {
1057                                                                                 $tochan->{pingave} = $tochan->{pingave} + (($t - $tochan->{pingave}) / 6);
1058                                                                         }
1059 #                                                                       my $st;
1060 #                                                                       for (@{$tochan->{pingtime}}) {
1061 #                                                                               $st += $_;
1062 #                                                                       }
1063 #                                                                       $tochan->{pingave} = $st / @{$tochan->{pingtime}};
1064                                                                         $tochan->{nopings} = $nopings; # pump up the timer
1065                                                                 }
1066                                                         }
1067                                                 }
1068                                         }
1069                                 }
1070                         } else {
1071                                 if (eph_dup($line)) {
1072                                         dbg("PCPROT: dup PC51 detected") if isdbg('chanerr');
1073                                         return;
1074                                 }
1075                                 # route down an appropriate thingy
1076                                 $self->route($to, $line);
1077                         }
1078                         return;
1079                 }
1080
1081                 if ($pcno == 75) {              # dunno but route it
1082                         my $call = $field[1];
1083                         if ($call ne $main::mycall) {
1084                                 $self->route($call, $line);
1085                         }
1086                         return;
1087                 }
1088
1089                 if ($pcno == 73) {  # WCY broadcasts
1090                         my $call = $field[1];
1091
1092                         # do some de-duping
1093                         my $d = cltounix($call, sprintf("%02d18Z", $field[2]));
1094                         if (($pcno == 23 && $d < $main::systime - $pc23_max_age) || $d > $main::systime + 1500 || $field[2] < 0 || $field[2] > 23) {
1095                                 dbg("PCPROT: WCY Date ($call $field[2]) out of range") if isdbg('chanerr');
1096                                 return;
1097                         }
1098                         @field = map { unpad($_) } @field;
1099                         if (WCY::dup($d,@field[3..7])) {
1100                                 dbg("PCPROT: Dup WCY Spot ignored\n") if isdbg('chanerr');
1101                                 return;
1102                         }
1103
1104                         my $wcy = WCY::update($d, @field[2..12]);
1105
1106                         my $rep;
1107                         eval {
1108                                 $rep = Local::wwv($self, @field[1..12]);
1109                         };
1110                         # dbg("Local::wcy error $@") if isdbg('local') if $@;
1111                         return if $rep;
1112
1113                         # broadcast to the eager world
1114                         send_wcy_spot($self, $line, $d, @field[2..12]);
1115                         return;
1116                 }
1117
1118                 if ($pcno == 84) { # remote commands (incoming)
1119                         $self->process_rcmd($field[1], $field[2], $field[3], $field[4]);
1120                         return;
1121                 }
1122
1123                 if ($pcno == 85) {              # remote command replies
1124                         $self->process_rcmd_reply($field[1], $field[2], $field[3], $field[4]);
1125
1126                         return;
1127                 }
1128         }
1129
1130         # if get here then rebroadcast the thing with its Hop count decremented (if
1131         # there is one). If it has a hop count and it decrements to zero then don't
1132         # rebroadcast it.
1133         #
1134         # NOTE - don't arrive here UNLESS YOU WANT this lump of protocol to be
1135         #        REBROADCAST!!!!
1136         #
1137
1138         if (eph_dup($line)) {
1139                 dbg("PCPROT: Ephemeral dup, dropped") if isdbg('chanerr');
1140         } else {
1141                 unless ($self->{isolate}) {
1142                         broadcast_ak1a($line, $self); # send it to everyone but me
1143                 }
1144         }
1145 }
1146
1147 #
1148 # This is called from inside the main cluster processing loop and is used
1149 # for despatching commands that are doing some long processing job
1150 #
1151 sub process
1152 {
1153         my $t = time;
1154         my @dxchan = DXChannel->get_all();
1155         my $dxchan;
1156         my $pc50s;
1157
1158         # send out a pc50 on EVERY channel all at once
1159         if ($t >= $last_pc50 + $DXProt::pc50_interval) {
1160                 $pc50s = pc50($me, scalar DXChannel::get_all_users);
1161                 eph_dup($pc50s);
1162                 $last_pc50 = $t;
1163         }
1164
1165         foreach $dxchan (@dxchan) {
1166                 next unless $dxchan->is_node();
1167                 next if $dxchan == $me;
1168
1169                 # send the pc50
1170                 $dxchan->send($pc50s) if $pc50s;
1171
1172                 # send a ping out on this channel
1173                 if ($dxchan->{pingint} && $t >= $dxchan->{pingint} + $dxchan->{lastping}) {
1174                         if ($dxchan->{nopings} <= 0) {
1175                                 $dxchan->disconnect;
1176                         } else {
1177                                 addping($main::mycall, $dxchan->call);
1178                                 $dxchan->{nopings} -= 1;
1179                                 $dxchan->{lastping} = $t;
1180                         }
1181                 }
1182         }
1183
1184         # every ten seconds
1185         if ($t - $last10 >= 10) {
1186                 # clean out ephemera
1187
1188                 eph_clean();
1189
1190                 $last10 = $t;
1191         }
1192
1193         if ($main::systime - 3600 > $last_hour) {
1194                 $last_hour = $main::systime;
1195         }
1196 }
1197
1198 #
1199 # finish up a pc context
1200 #
1201
1202 #
1203 # some active measures
1204 #
1205
1206 sub send_dx_spot
1207 {
1208         my $self = shift;
1209         my $line = shift;
1210         my @dxchan = DXChannel->get_all();
1211         my $dxchan;
1212
1213         # send it if it isn't the except list and isn't isolated and still has a hop count
1214         # taking into account filtering and so on
1215         foreach $dxchan (@dxchan) {
1216                 next if $dxchan == $me;
1217                 next if $dxchan == $self && $self->is_node;
1218                 $dxchan->dx_spot($line, $self->{isolate}, @_, $self->{call});
1219         }
1220 }
1221
1222 sub dx_spot
1223 {
1224         my $self = shift;
1225         my $line = shift;
1226         my $isolate = shift;
1227         my ($filter, $hops);
1228
1229         if ($self->{spotsfilter}) {
1230                 ($filter, $hops) = $self->{spotsfilter}->it(@_);
1231                 return unless $filter;
1232         }
1233         send_prot_line($self, $filter, $hops, $isolate, $line);
1234 }
1235
1236 sub send_prot_line
1237 {
1238         my ($self, $filter, $hops, $isolate, $line) = @_;
1239         my $routeit;
1240
1241         if ($hops) {
1242                 $routeit = $line;
1243                 $routeit =~ s/\^H\d+\^\~$/\^H$hops\^\~/;
1244         } else {
1245                 $routeit = adjust_hops($self, $line);  # adjust its hop count by node name
1246                 return unless $routeit;
1247         }
1248         if ($filter) {
1249                 $self->send($routeit);
1250         } else {
1251                 $self->send($routeit) unless $self->{isolate} || $isolate;
1252         }
1253 }
1254
1255
1256 sub send_wwv_spot
1257 {
1258         my $self = shift;
1259         my $line = shift;
1260         my @dxchan = DXChannel->get_all();
1261         my $dxchan;
1262         my ($wwv_dxcc, $wwv_itu, $wwv_cq, $org_dxcc, $org_itu, $org_cq) = (0..0);
1263         my @dxcc = Prefix::extract($_[7]);
1264         if (@dxcc > 0) {
1265                 $wwv_dxcc = $dxcc[1]->dxcc;
1266                 $wwv_itu = $dxcc[1]->itu;
1267                 $wwv_cq = $dxcc[1]->cq;
1268         }
1269         @dxcc = Prefix::extract($_[8]);
1270         if (@dxcc > 0) {
1271                 $org_dxcc = $dxcc[1]->dxcc;
1272                 $org_itu = $dxcc[1]->itu;
1273                 $org_cq = $dxcc[1]->cq;
1274         }
1275
1276         # send it if it isn't the except list and isn't isolated and still has a hop count
1277         # taking into account filtering and so on
1278         foreach $dxchan (@dxchan) {
1279                 next if $dxchan == $me;
1280                 next if $dxchan == $self && $self->is_node;
1281                 my $routeit;
1282                 my ($filter, $hops);
1283
1284                 $dxchan->wwv($line, $self->{isolate}, @_, $self->{call}, $wwv_dxcc, $wwv_itu, $wwv_cq, $org_dxcc, $org_itu, $org_cq);
1285         }
1286
1287 }
1288
1289 sub wwv
1290 {
1291         my $self = shift;
1292         my $line = shift;
1293         my $isolate = shift;
1294         my ($filter, $hops);
1295
1296         if ($self->{wwvfilter}) {
1297                 ($filter, $hops) = $self->{wwvfilter}->it(@_);
1298                 return unless $filter;
1299         }
1300         send_prot_line($self, $filter, $hops, $isolate, $line)
1301 }
1302
1303 sub send_wcy_spot
1304 {
1305         my $self = shift;
1306         my $line = shift;
1307         my @dxchan = DXChannel->get_all();
1308         my $dxchan;
1309         my ($wcy_dxcc, $wcy_itu, $wcy_cq, $org_dxcc, $org_itu, $org_cq) = (0..0);
1310         my @dxcc = Prefix::extract($_[11]);
1311         if (@dxcc > 0) {
1312                 $wcy_dxcc = $dxcc[1]->dxcc;
1313                 $wcy_itu = $dxcc[1]->itu;
1314                 $wcy_cq = $dxcc[1]->cq;
1315         }
1316         @dxcc = Prefix::extract($_[12]);
1317         if (@dxcc > 0) {
1318                 $org_dxcc = $dxcc[1]->dxcc;
1319                 $org_itu = $dxcc[1]->itu;
1320                 $org_cq = $dxcc[1]->cq;
1321         }
1322
1323         # send it if it isn't the except list and isn't isolated and still has a hop count
1324         # taking into account filtering and so on
1325         foreach $dxchan (@dxchan) {
1326                 next if $dxchan == $me;
1327                 next if $dxchan == $self;
1328
1329                 $dxchan->wcy($line, $self->{isolate}, @_, $self->{call}, $wcy_dxcc, $wcy_itu, $wcy_cq, $org_dxcc, $org_itu, $org_cq);
1330         }
1331 }
1332
1333 sub wcy
1334 {
1335         my $self = shift;
1336         my $line = shift;
1337         my $isolate = shift;
1338         my ($filter, $hops);
1339
1340         if ($self->{wcyfilter}) {
1341                 ($filter, $hops) = $self->{wcyfilter}->it(@_);
1342                 return unless $filter;
1343         }
1344         send_prot_line($self, $filter, $hops, $isolate, $line) if $self->is_clx || $self->is_spider || $self->is_dxnet;
1345 }
1346
1347 # send an announce
1348 sub send_announce
1349 {
1350         my $self = shift;
1351         my $line = shift;
1352         my @dxchan = DXChannel->get_all();
1353         my $dxchan;
1354         my $target;
1355         my $to = 'To ';
1356         my $text = unpad($_[2]);
1357
1358         if ($_[3] eq '*') {     # sysops
1359                 $target = "SYSOP";
1360         } elsif ($_[3] gt ' ') { # speciality list handling
1361                 my ($name) = split /\./, $_[3];
1362                 $target = "$name"; # put the rest in later (if bothered)
1363         }
1364
1365         if ($_[5] eq '1') {
1366                 $target = "WX";
1367                 $to = '';
1368         }
1369         $target = "ALL" if !$target;
1370
1371         Log('ann', $target, $_[0], $text);
1372
1373         # obtain country codes etc
1374         my ($ann_dxcc, $ann_itu, $ann_cq, $org_dxcc, $org_itu, $org_cq) = (0..0);
1375         my @dxcc = Prefix::extract($_[0]);
1376         if (@dxcc > 0) {
1377                 $ann_dxcc = $dxcc[1]->dxcc;
1378                 $ann_itu = $dxcc[1]->itu;
1379                 $ann_cq = $dxcc[1]->cq;
1380         }
1381         @dxcc = Prefix::extract($_[4]);
1382         if (@dxcc > 0) {
1383                 $org_dxcc = $dxcc[1]->dxcc;
1384                 $org_itu = $dxcc[1]->itu;
1385                 $org_cq = $dxcc[1]->cq;
1386         }
1387
1388         # send it if it isn't the except list and isn't isolated and still has a hop count
1389         # taking into account filtering and so on
1390         foreach $dxchan (@dxchan) {
1391                 next if $dxchan == $me;
1392                 next if $dxchan == $self && $self->is_node;
1393                 $dxchan->announce($line, $self->{isolate}, $to, $target, $text, @_, $self->{call}, $ann_dxcc, $ann_itu, $ann_cq, $org_dxcc, $org_itu, $org_cq);
1394         }
1395 }
1396
1397 sub announce
1398 {
1399         my $self = shift;
1400         my $line = shift;
1401         my $isolate = shift;
1402         my $to = shift;
1403         my $target = shift;
1404         my $text = shift;
1405         my ($filter, $hops);
1406
1407         if ($self->{annfilter}) {
1408                 ($filter, $hops) = $self->{annfilter}->it(@_);
1409                 return unless $filter;
1410         }
1411         send_prot_line($self, $filter, $hops, $isolate, $line) unless $_[1] eq $main::mycall;
1412 }
1413
1414
1415 sub send_local_config
1416 {
1417         my $self = shift;
1418         my $n;
1419         my @nodes;
1420         my @localnodes;
1421         my @remotenodes;
1422
1423         dbg('DXProt::send_local_config') if isdbg('trace');
1424
1425         # send our nodes
1426         if ($self->{isolate}) {
1427                 @localnodes = ( $main::routeroot );
1428         } else {
1429                 # create a list of all the nodes that are not connected to this connection
1430                 # and are not themselves isolated, this to make sure that isolated nodes
1431         # don't appear outside of this node
1432                 my @dxchan = grep { $_->call ne $main::mycall && $_ != $self && !$_->{isolate} } DXChannel::get_all_nodes();
1433                 @localnodes = map { my $r = Route::Node::get($_->{call}); $r ? $r : () } @dxchan if @dxchan;
1434                 my @intcalls = map { $_->nodes } @localnodes if @localnodes;
1435                 my $ref = Route::Node::get($self->{call});
1436                 my @rnodes = $ref->nodes;
1437                 for my $n (@intcalls) {
1438                         push @remotenodes, Route::Node::get($n) unless grep $n eq $_, @rnodes;
1439                 }
1440                 unshift @localnodes, $main::routeroot;
1441         }
1442
1443         send_route($self, \&pc19, scalar(@localnodes)+scalar(@remotenodes), @localnodes, @remotenodes);
1444
1445         # get all the users connected on the above nodes and send them out
1446         foreach $n (@localnodes, @remotenodes) {
1447                 if ($n) {
1448                         send_route($self, \&pc16, 1, $n, map {my $r = Route::User::get($_); $r ? ($r) : ()} $n->users);
1449                 } else {
1450                         dbg("sent a null value") if isdbg('chanerr');
1451                 }
1452         }
1453 }
1454
1455 #
1456 # route a message down an appropriate interface for a callsign
1457 #
1458 # is called route(to, pcline);
1459 #
1460 sub route
1461 {
1462         my ($self, $call, $line) = @_;
1463
1464         if (ref $self && $call eq $self->{call}) {
1465                 dbg("PCPROT: Trying to route back to source, dropped") if isdbg('chanerr');
1466                 return;
1467         }
1468
1469         # always send it down the local interface if available
1470         my $dxchan = DXChannel->get($call);
1471         unless ($dxchan) {
1472                 my $cl = Route::get($call);
1473                 $dxchan = $cl->dxchan if $cl;
1474                 if (ref $dxchan) {
1475                         if (ref $self && $dxchan eq $self) {
1476                                 dbg("PCPROT: Trying to route back to source, dropped") if isdbg('chanerr');
1477                                 return;
1478                         }
1479                 }
1480         }
1481         if ($dxchan) {
1482                 my $routeit = adjust_hops($dxchan, $line);   # adjust its hop count by node name
1483                 if ($routeit) {
1484                         $dxchan->send($routeit) unless $dxchan == $me;
1485                 }
1486         } else {
1487                 dbg("PCPROT: No route available, dropped") if isdbg('chanerr');
1488         }
1489 }
1490
1491 # broadcast a message to all clusters taking into account isolation
1492 # [except those mentioned after buffer]
1493 sub broadcast_ak1a
1494 {
1495         my $s = shift;                          # the line to be rebroadcast
1496         my @except = @_;                        # to all channels EXCEPT these (dxchannel refs)
1497         my @dxchan = DXChannel::get_all_nodes();
1498         my $dxchan;
1499
1500         # send it if it isn't the except list and isn't isolated and still has a hop count
1501         foreach $dxchan (@dxchan) {
1502                 next if grep $dxchan == $_, @except;
1503                 next if $dxchan == $me;
1504
1505                 my $routeit = adjust_hops($dxchan, $s);      # adjust its hop count by node name
1506                 $dxchan->send($routeit) unless $dxchan->{isolate} || !$routeit;
1507         }
1508 }
1509
1510 # broadcast a message to all clusters ignoring isolation
1511 # [except those mentioned after buffer]
1512 sub broadcast_all_ak1a
1513 {
1514         my $s = shift;                          # the line to be rebroadcast
1515         my @except = @_;                        # to all channels EXCEPT these (dxchannel refs)
1516         my @dxchan = DXChannel::get_all_nodes();
1517         my $dxchan;
1518
1519         # send it if it isn't the except list and isn't isolated and still has a hop count
1520         foreach $dxchan (@dxchan) {
1521                 next if grep $dxchan == $_, @except;
1522                 next if $dxchan == $me;
1523
1524                 my $routeit = adjust_hops($dxchan, $s);      # adjust its hop count by node name
1525                 $dxchan->send($routeit);
1526         }
1527 }
1528
1529 # broadcast to all users
1530 # storing the spot or whatever until it is in a state to receive it
1531 sub broadcast_users
1532 {
1533         my $s = shift;                          # the line to be rebroadcast
1534         my $sort = shift;           # the type of transmission
1535         my $fref = shift;           # a reference to an object to filter on
1536         my @except = @_;                        # to all channels EXCEPT these (dxchannel refs)
1537         my @dxchan = DXChannel::get_all_users();
1538         my $dxchan;
1539         my @out;
1540
1541         foreach $dxchan (@dxchan) {
1542                 next if grep $dxchan == $_, @except;
1543                 push @out, $dxchan;
1544         }
1545         broadcast_list($s, $sort, $fref, @out);
1546 }
1547
1548 # broadcast to a list of users
1549 sub broadcast_list
1550 {
1551         my $s = shift;
1552         my $sort = shift;
1553         my $fref = shift;
1554         my $dxchan;
1555
1556         foreach $dxchan (@_) {
1557                 my $filter = 1;
1558                 next if $dxchan == $me;
1559
1560                 if ($sort eq 'dx') {
1561                     next unless $dxchan->{dx};
1562                         ($filter) = $dxchan->{spotsfilter}->it(@{$fref}) if ref $fref;
1563                         next unless $filter;
1564                 }
1565                 next if $sort eq 'ann' && !$dxchan->{ann} && $s !~ /^To\s+LOCAL\s+de\s+(?:$main::myalias|$main::mycall)/i;
1566                 next if $sort eq 'wwv' && !$dxchan->{wwv};
1567                 next if $sort eq 'wcy' && !$dxchan->{wcy};
1568                 next if $sort eq 'wx' && !$dxchan->{wx};
1569
1570                 $s =~ s/\a//og unless $dxchan->{beep};
1571
1572                 if ($dxchan->{state} eq 'prompt' || $dxchan->{state} eq 'talk') {
1573                         $dxchan->send($s);
1574                 } else {
1575                         $dxchan->delay($s);
1576                 }
1577         }
1578 }
1579
1580
1581 #
1582 # obtain the hops from the list for this callsign and pc no
1583 #
1584
1585 sub get_hops
1586 {
1587         my $pcno = shift;
1588         my $hops = $DXProt::hopcount{$pcno};
1589         $hops = $DXProt::def_hopcount if !$hops;
1590         return "H$hops";
1591 }
1592
1593 #
1594 # adjust the hop count on a per node basis using the user loadable
1595 # hop table if available or else decrement an existing one
1596 #
1597
1598 sub adjust_hops
1599 {
1600         my $self = shift;
1601         my $s = shift;
1602         my $call = $self->{call};
1603         my $hops;
1604
1605         if (($hops) = $s =~ /\^H(\d+)\^~?$/o) {
1606                 my ($pcno) = $s =~ /^PC(\d\d)/o;
1607                 confess "$call called adjust_hops with '$s'" unless $pcno;
1608                 my $ref = $nodehops{$call} if %nodehops;
1609                 if ($ref) {
1610                         my $newhops = $ref->{$pcno};
1611                         return "" if defined $newhops && $newhops == 0;
1612                         $newhops = $ref->{default} unless $newhops;
1613                         return "" if defined $newhops && $newhops == 0;
1614                         $newhops = $hops if !$newhops;
1615                         $s =~ s/\^H(\d+)(\^~?)$/\^H$newhops$2/ if $newhops;
1616                 } else {
1617                         # simply decrement it
1618                         $hops--;
1619                         return "" if !$hops;
1620                         $s =~ s/\^H(\d+)(\^~?)$/\^H$hops$2/ if $hops;
1621                 }
1622         }
1623         return $s;
1624 }
1625
1626 #
1627 # load hop tables
1628 #
1629 sub load_hops
1630 {
1631         my $self = shift;
1632         return $self->msg('lh1') unless -e "$main::data/hop_table.pl";
1633         do "$main::data/hop_table.pl";
1634         return $@ if $@;
1635         return 0;
1636 }
1637
1638
1639 # add a ping request to the ping queues
1640 sub addping
1641 {
1642         my ($from, $to) = @_;
1643         my $ref = $pings{$to} || [];
1644         my $r = {};
1645         $r->{call} = $from;
1646         $r->{t} = [ gettimeofday ];
1647         route(undef, $to, pc51($to, $main::mycall, 1));
1648         push @$ref, $r;
1649         $pings{$to} = $ref;
1650 }
1651
1652 sub process_rcmd
1653 {
1654         my ($self, $tonode, $fromnode, $user, $cmd) = @_;
1655         if ($tonode eq $main::mycall) {
1656                 my $ref = DXUser->get_current($fromnode);
1657                 my $cref = Route::Node::get($fromnode);
1658                 Log('rcmd', 'in', $ref->{priv}, $fromnode, $cmd);
1659                 if ($cmd !~ /^\s*rcmd/i && $cref && $ref && $cref->call eq $ref->homenode) { # not allowed to relay RCMDS!
1660                         if ($ref->{priv}) {             # you have to have SOME privilege, the commands have further filtering
1661                                 $self->{remotecmd} = 1; # for the benefit of any command that needs to know
1662                                 my $oldpriv = $self->{priv};
1663                                 $self->{priv} = $ref->{priv}; # assume the user's privilege level
1664                                 my @in = (DXCommandmode::run_cmd($self, $cmd));
1665                                 $self->{priv} = $oldpriv;
1666                                 $self->send_rcmd_reply($main::mycall, $fromnode, $user, @in);
1667                                 delete $self->{remotecmd};
1668                         } else {
1669                                 $self->send_rcmd_reply($main::mycall, $fromnode, $user, "sorry...!");
1670                         }
1671                 } else {
1672                         $self->send_rcmd_reply($main::mycall, $fromnode, $user, "your attempt is logged, Tut tut tut...!");
1673                 }
1674         } else {
1675                 my $ref = DXUser->get_current($tonode);
1676                 if ($ref && $ref->is_clx) {
1677                         $self->route($tonode, pc84($fromnode, $tonode, $user, $cmd));
1678                 } else {
1679                         $self->route($tonode, pc34($fromnode, $tonode, $cmd));
1680                 }
1681         }
1682 }
1683
1684 sub process_rcmd_reply
1685 {
1686         my ($self, $tonode, $fromnode, $user, $line) = @_;
1687         if ($tonode eq $main::mycall) {
1688                 my $s = $rcmds{$fromnode};
1689                 if ($s) {
1690                         my $dxchan = DXChannel->get($s->{call});
1691                         my $ref = $user eq $tonode ? $dxchan : (DXChannel->get($user) || $dxchan);
1692                         $ref->send($line) if $ref;
1693                         delete $rcmds{$fromnode} if !$dxchan;
1694                 } else {
1695                         # send unsolicited ones to the sysop
1696                         my $dxchan = DXChannel->get($main::myalias);
1697                         $dxchan->send($line) if $dxchan;
1698                 }
1699         } else {
1700                 my $ref = DXUser->get_current($tonode);
1701                 if ($ref && $ref->is_clx) {
1702                         $self->route($tonode, pc85($fromnode, $tonode, $user, $line));
1703                 } else {
1704                         $self->route($tonode, pc35($fromnode, $tonode, $line));
1705                 }
1706         }
1707 }
1708
1709 sub send_rcmd_reply
1710 {
1711         my $self = shift;
1712         my $tonode = shift;
1713         my $fromnode = shift;
1714         my $user = shift;
1715         while (@_) {
1716                 my $line = shift;
1717                 $line =~ s/\s*$//;
1718                 Log('rcmd', 'out', $fromnode, $line);
1719                 if ($self->is_clx) {
1720                         $self->send(pc85($main::mycall, $fromnode, $user, "$main::mycall:$line"));
1721                 } else {
1722                         $self->send(pc35($main::mycall, $fromnode, "$main::mycall:$line"));
1723                 }
1724         }
1725 }
1726
1727 # add a rcmd request to the rcmd queues
1728 sub addrcmd
1729 {
1730         my ($self, $to, $cmd) = @_;
1731
1732         my $r = {};
1733         $r->{call} = $self->{call};
1734         $r->{t} = $main::systime;
1735         $r->{cmd} = $cmd;
1736         $rcmds{$to} = $r;
1737
1738         my $ref = Route::Node::get($to);
1739         my $dxchan = $ref->dxchan;
1740         if ($dxchan && $dxchan->is_clx) {
1741                 route(undef, $to, pc84($main::mycall, $to, $self->{call}, $cmd));
1742         } else {
1743                 route(undef, $to, pc34($main::mycall, $to, $cmd));
1744         }
1745 }
1746
1747 sub disconnect
1748 {
1749         my $self = shift;
1750         my $pc39flag = shift;
1751         my $call = $self->call;
1752
1753         return if $self->{disconnecting}++;
1754
1755         unless ($pc39flag && $pc39flag == 1) {
1756                 $self->send_now("D", DXProt::pc39($main::mycall, $self->msg('disc1', "System Op")));
1757         }
1758
1759         # do routing stuff
1760         my $node = Route::Node::get($call);
1761         my @rout;
1762         if ($node) {
1763                 @rout = $node->del($main::routeroot);
1764         }
1765
1766         # unbusy and stop and outgoing mail
1767         my $mref = DXMsg::get_busy($call);
1768         $mref->stop_msg($call) if $mref;
1769
1770         # broadcast to all other nodes that all the nodes connected to via me are gone
1771         unless ($pc39flag && $pc39flag == 2) {
1772                 $self->route_pc21(@rout) if @rout;
1773         }
1774
1775         # remove outstanding pings
1776         delete $pings{$call};
1777
1778         # I was the last node visited
1779     $self->user->node($main::mycall);
1780
1781         # send info to all logged in thingies
1782         $self->tell_login('logoutn');
1783
1784         Log('DXProt', $call . " Disconnected");
1785
1786         $self->SUPER::disconnect;
1787 }
1788
1789
1790 #
1791 # send a talk message to this thingy
1792 #
1793 sub talk
1794 {
1795         my ($self, $from, $to, $via, $line) = @_;
1796
1797         $line =~ s/\^/\\5E/g;                   # remove any ^ characters
1798         $self->send(DXProt::pc10($from, $to, $via, $line));
1799         Log('talk', $self->call, $from, $via?$via:$main::mycall, $line);
1800 }
1801
1802 # send it if it isn't the except list and isn't isolated and still has a hop count
1803 # taking into account filtering and so on
1804 sub send_route
1805 {
1806         my $self = shift;
1807         my $generate = shift;
1808         my $no = shift;     # the no of things to filter on
1809         my $routeit;
1810         my ($filter, $hops);
1811         my @rin;
1812
1813         for (; @_ && $no; $no--) {
1814                 my $r = shift;
1815
1816                 if (!$self->{isolate} && $self->{routefilter}) {
1817                         $filter = undef;
1818                         if ($r) {
1819                                 ($filter, $hops) = $self->{routefilter}->it($self->{call}, $self->{dxcc}, $self->{itu}, $self->{cq}, $r->call, $r->dxcc, $r->itu, $r->cq);
1820                                 if ($filter) {
1821                                         push @rin, $r;
1822                                 } else {
1823                                         dbg("DXPROT: $self->{call}/" . $r->call . " rejected by output filter") if isdbg('chanerr');
1824                                 }
1825                         } else {
1826                                 dbg("was sent a null value") if isdbg('chanerr');
1827                         }
1828                 } else {
1829                         push @rin, $r unless $self->{isolate} && $r->call ne $main::mycall;
1830                 }
1831         }
1832         if (@rin) {
1833                 foreach my $line (&$generate(@rin, @_)) {
1834                         if ($hops) {
1835                                 $routeit = $line;
1836                                 $routeit =~ s/\^H\d+\^\~$/\^H$hops\^\~/;
1837                         } else {
1838                                 $routeit = adjust_hops($self, $line);  # adjust its hop count by node name
1839                                 next unless $routeit;
1840                         }
1841                         $self->send($routeit);
1842                 }
1843         }
1844 }
1845
1846 sub broadcast_route
1847 {
1848         my $self = shift;
1849         my $generate = shift;
1850         my @dxchan = DXChannel::get_all_nodes();
1851         my $dxchan;
1852         my $line;
1853
1854         unless ($self->{isolate}) {
1855                 foreach $dxchan (@dxchan) {
1856                         next if $dxchan == $self;
1857                         next if $dxchan == $me;
1858                         $dxchan->send_route($generate, @_);
1859                 }
1860         }
1861 }
1862
1863 sub route_pc16
1864 {
1865         my $self = shift;
1866         broadcast_route($self, \&pc16, 1, @_);
1867 }
1868
1869 sub route_pc17
1870 {
1871         my $self = shift;
1872         broadcast_route($self, \&pc17, 1, @_);
1873 }
1874
1875 sub route_pc19
1876 {
1877         my $self = shift;
1878         broadcast_route($self, \&pc19, scalar @_, @_);
1879 }
1880
1881 sub route_pc21
1882 {
1883         my $self = shift;
1884         broadcast_route($self, \&pc21, scalar @_, @_);
1885 }
1886
1887 sub route_pc24
1888 {
1889         my $self = shift;
1890         broadcast_route($self, \&pc24, 1, @_);
1891 }
1892
1893 sub route_pc41
1894 {
1895         my $self = shift;
1896         broadcast_route($self, \&pc41, 1, @_);
1897 }
1898
1899 sub route_pc50
1900 {
1901         my $self = shift;
1902         broadcast_route($self, \&pc50, 1, @_);
1903 }
1904
1905 sub in_filter_route
1906 {
1907         my $self = shift;
1908         my $r = shift;
1909         my ($filter, $hops) = (1, 1);
1910
1911         if ($self->{inroutefilter}) {
1912                 ($filter, $hops) = $self->{inroutefilter}->it($self->{call}, $self->{dxcc}, $self->{itu}, $self->{cq}, $r->call, $r->dxcc, $r->itu, $r->cq);
1913                 dbg("PCPROT: $self->{call}/" . $r->call . ' rejected by in_filter_route') if !$filter && isdbg('chanerr');
1914         }
1915         return $filter;
1916 }
1917
1918 sub eph_dup
1919 {
1920         my $s = shift;
1921         my $r;
1922
1923         # chop the end off
1924         $s =~ s/\^H\d\d?\^?\~?$//;
1925         $r = 1 if exists $eph{$s};    # pump up the dup if it keeps circulating
1926         $eph{$s} = $main::systime;
1927         return $r;
1928 }
1929
1930 sub eph_del_regex
1931 {
1932         my $regex = shift;
1933         my ($key, $val);
1934         while (($key, $val) = each %eph) {
1935                 if ($key =~ m{$regex}) {
1936                         delete $eph{$key};
1937                 }
1938         }
1939 }
1940
1941 sub eph_clean
1942 {
1943         my ($key, $val);
1944
1945         while (($key, $val) = each %eph) {
1946                 if ($main::systime - $val > 180) {
1947                         delete $eph{$key};
1948                 }
1949         }
1950 }
1951
1952 1;
1953 __END__