perl/DXProt.pm

   1 #!/usr/bin/perl
   2 #
   3 # This module impliments the protocal mode for a dx cluster
   4 #
   5 # Copyright (c) 1998 Dirk Koopman G1TLH
   6 #
   7 # $Id$
   8 #
   9
  10 package DXProt;
  11
  12 @ISA = qw(DXChannel);
  13
  14 use DXUtil;
  15 use DXChannel;
  16 use DXUser;
  17 use DXM;
  18 use DXProtVars;
  19 use DXCommandmode;
  20 use DXLog;
  21 use Spot;
  22 use DXProtout;
  23 use DXDebug;
  24 use Filter;
  25 use Local;
  26 use DXDb;
  27 use AnnTalk;
  28 use Geomag;
  29 use WCY;
  30 use Time::HiRes qw(gettimeofday tv_interval);
  31 use BadWords;
  32 use DXHash;
  33 use Route;
  34 use Route::Node;
  35 use Script;
  36
  37 use strict;
  38
  39 use vars qw($VERSION $BRANCH);
  40 $VERSION = sprintf( "%d.%03d", q$Revision$ =~ /(\d+)\.(\d+)/ );
  41 $BRANCH = sprintf( "%d.%03d", q$Revision$ =~ /\d+\.\d+\.(\d+)\.(\d+)/ ) || 0;
  42 $main::build += $VERSION;
  43 $main::branch += $BRANCH;
  44
  45 use vars qw($pc11_max_age $pc23_max_age $last_pc50 $eph_restime $eph_info_restime $eph_pc34_restime
  46                         $last_hour $last10 %eph  %pings %rcmds $ann_to_talk
  47                         %nodehops $baddx $badspotter $badnode $censorpc $rspfcheck
  48                         $allowzero $decode_dk0wcy $send_opernam @checklist);
  49
  50 $pc11_max_age = 1*3600;                 # the maximum age for an incoming 'real-time' pc11
  51 $pc23_max_age = 1*3600;                 # the maximum age for an incoming 'real-time' pc23
  52
  53 $last_hour = time;                              # last time I did an hourly periodic update
  54 %pings = ();                    # outstanding ping requests outbound
  55 %rcmds = ();                    # outstanding rcmd requests outbound
  56 %nodehops = ();                 # node specific hop control
  57 $censorpc = 1;                                  # Do a BadWords::check on text fields and reject things
  58                                                                 # loads of 'bad things'
  59 $baddx = new DXHash "baddx";
  60 $badspotter = new DXHash "badspotter";
  61 $badnode = new DXHash "badnode";
  62 $last10 = $last_pc50 = time;
  63 $ann_to_talk = 1;
  64 $rspfcheck = 1;
  65 $eph_restime = 180;
  66 $eph_info_restime = 60*60;
  67 $eph_pc34_restime = 30;
  68
  69 @checklist =
  70 (
  71  [ qw(c c m bp bc c) ],                 # pc10
  72  [ qw(f m d t m c c h) ],               # pc11
  73  [ qw(c bc m bp bm p h) ],              # pc12
  74  [ qw(c h) ],                                   #
  75  [ qw(c h) ],                                   #
  76  [ qw(c m h) ],                                 #
  77  undef ,                                                # pc16 has to be validated manually
  78  [ qw(c c h) ],                                 # pc17
  79  [ qw(m n) ],                                   # pc18
  80  undef ,                                                # pc19 has to be validated manually
  81  undef ,                                                # pc20 no validation
  82  [ qw(c m h) ],                                 # pc21
  83  undef ,                                                # pc22 no validation
  84  [ qw(d n n n n m c c h) ],             # pc23
  85  [ qw(c p h) ],                                 # pc24
  86  [ qw(c c n n) ],                               # pc25
  87  [ qw(f m d t m c c bc) ],              # pc26
  88  [ qw(d n n n n m c c bc) ],    # pc27
  89  [ qw(c c m c d t p m bp n p bp bc) ], # pc28
  90  [ qw(c c n m) ],                               # pc29
  91  [ qw(c c n) ],                                 # pc30
  92  [ qw(c c n) ],                                 # pc31
  93  [ qw(c c n) ],                                 # pc32
  94  [ qw(c c n) ],                                 # pc33
  95  [ qw(c c m) ],                                 # pc34
  96  [ qw(c c m) ],                                 # pc35
  97  [ qw(c c m) ],                                 # pc36
  98  [ qw(c c n m) ],                               # pc37
  99  undef,                                                 # pc38 not interested
 100  [ qw(c m) ],                                   # pc39
 101  [ qw(c c m p n) ],                             # pc40
 102  [ qw(c n m h) ],                               # pc41
 103  [ qw(c c n) ],                                 # pc42
 104  undef,                                                 # pc43 don't handle it
 105  [ qw(c c n m m c) ],                   # pc44
 106  [ qw(c c n m) ],                               # pc45
 107  [ qw(c c n) ],                                 # pc46
 108  undef,                                                 # pc47
 109  undef,                                                 # pc48
 110  [ qw(c m h) ],                                 # pc49
 111  [ qw(c n h) ],                                 # pc50
 112  [ qw(c c n) ],                                 # pc51
 113  undef,
 114  undef,
 115  undef,
 116  undef,
 117  undef,
 118  undef,
 119  undef,
 120  undef,
 121  undef,                                                 # pc60
 122  undef,
 123  undef,
 124  undef,
 125  undef,
 126  undef,
 127  undef,
 128  undef,
 129  undef,
 130  undef,
 131  undef,                                                 # pc70
 132  undef,
 133  undef,
 134  [ qw(d n n n n n n m m m c c h) ],     # pc73
 135  undef,
 136  undef,
 137  undef,
 138  undef,
 139  undef,
 140  undef,
 141  undef,                                                 # pc80
 142  undef,
 143  undef,
 144  undef,
 145  [ qw(c c c m) ],                               # pc84
 146  [ qw(c c c m) ],                               # pc85
 147 );
 148
 149 # use the entry in the check list to check the field list presented
 150 # return OK if line NOT in check list (for now)
 151 sub check
 152 {
 153         my $n = shift;
 154         $n -= 10;
 155         return 0 if $n < 0 || $n > @checklist;
 156         my $ref = $checklist[$n];
 157         return 0 unless ref $ref;
 158
 159         my $i;
 160         shift;    # not interested in the first field
 161         for ($i = 0; $i < @$ref; $i++) {
 162                 my ($blank, $act) = $$ref[$i] =~ /^(b?)(\w)$/;
 163                 return 0 unless $act;
 164                 next if $blank && $_[$i] =~ /^[ \*]$/;
 165                 if ($act eq 'c') {
 166                         return $i+1 unless is_callsign($_[$i]);
 167                 } elsif ($act eq 'm') {
 168                         return $i+1 unless is_pctext($_[$i]);
 169                 } elsif ($act eq 'p') {
 170                         return $i+1 unless is_pcflag($_[$i]);
 171                 } elsif ($act eq 'f') {
 172                         return $i+1 unless is_freq($_[$i]);
 173                 } elsif ($act eq 'n') {
 174                         return $i+1 unless $_[$i] =~ /^[\d ]+$/;
 175                 } elsif ($act eq 'h') {
 176                         return $i+1 unless $_[$i] =~ /^H\d\d?$/;
 177                 } elsif ($act eq 'd') {
 178                         return $i+1 unless $_[$i] =~ /^\s*\d+-\w\w\w-[12][90]\d\d$/;
 179                 } elsif ($act eq 't') {
 180                         return $i+1 unless $_[$i] =~ /^[012]\d[012345]\dZ$/;
 181                 }
 182         }
 183         return 0;
 184 }
 185
 186 sub init
 187 {
 188         my $user = DXUser->get($main::mycall);
 189         $DXProt::myprot_version += $main::version*100;
 190         $main::me = DXProt->new($main::mycall, 0, $user);
 191         $main::me->{here} = 1;
 192         $main::me->{state} = "indifferent";
 193         do "$main::data/hop_table.pl" if -e "$main::data/hop_table.pl";
 194         confess $@ if $@;
 195         $main::me->{sort} = 'S';    # S for spider
 196         $main::me->{priv} = 9;
 197         $main::me->{metric} = 0;
 198         $main::me->{pingave} = 0;
 199
 200 #       $Route::Node::me->adddxchan($main::me);
 201 }
 202
 203 #
 204 # obtain a new connection this is derived from dxchannel
 205 #
 206
 207 sub new
 208 {
 209         my $self = DXChannel::alloc(@_);
 210
 211         # add this node to the table, the values get filled in later
 212         my $pkg = shift;
 213         my $call = shift;
 214         $main::routeroot->add($call, '5000', Route::here(1)) if $call ne $main::mycall;
 215
 216         return $self;
 217 }
 218
 219 # this is how a pc connection starts (for an incoming connection)
 220 # issue a PC38 followed by a PC18, then wait for a PC20 (remembering
 221 # all the crap that comes between).
 222 sub start
 223 {
 224         my ($self, $line, $sort) = @_;
 225         my $call = $self->{call};
 226         my $user = $self->{user};
 227
 228         # log it
 229         my $host = $self->{conn}->{peerhost} || "unknown";
 230         Log('DXProt', "$call connected from $host");
 231
 232         # remember type of connection
 233         $self->{consort} = $line;
 234         $self->{outbound} = $sort eq 'O';
 235         my $priv = $user->priv;
 236         $priv = $user->priv(1) unless $priv;
 237         $self->{priv} = $priv;     # other clusters can always be 'normal' users
 238         $self->{lang} = $user->lang || 'en';
 239         $self->{isolate} = $user->{isolate};
 240         $self->{consort} = $line;       # save the connection type
 241         $self->{here} = 1;
 242         $self->{width} = 80;
 243
 244         # sort out registration
 245         $self->{registered} = 1;
 246
 247         # get the output filters
 248         $self->{spotsfilter} = Filter::read_in('spots', $call, 0) || Filter::read_in('spots', 'node_default', 0);
 249         $self->{wwvfilter} = Filter::read_in('wwv', $call, 0) || Filter::read_in('wwv', 'node_default', 0);
 250         $self->{wcyfilter} = Filter::read_in('wcy', $call, 0) || Filter::read_in('wcy', 'node_default', 0);
 251         $self->{annfilter} = Filter::read_in('ann', $call, 0) || Filter::read_in('ann', 'node_default', 0) ;
 252         $self->{routefilter} = Filter::read_in('route', $call, 0) || Filter::read_in('route', 'node_default', 0) unless $self->{isolate} ;
 253
 254
 255         # get the INPUT filters (these only pertain to Clusters)
 256         $self->{inspotsfilter} = Filter::read_in('spots', $call, 1) || Filter::read_in('spots', 'node_default', 1);
 257         $self->{inwwvfilter} = Filter::read_in('wwv', $call, 1) || Filter::read_in('wwv', 'node_default', 1);
 258         $self->{inwcyfilter} = Filter::read_in('wcy', $call, 1) || Filter::read_in('wcy', 'node_default', 1);
 259         $self->{inannfilter} = Filter::read_in('ann', $call, 1) || Filter::read_in('ann', 'node_default', 1);
 260         $self->{inroutefilter} = Filter::read_in('route', $call, 1) || Filter::read_in('route', 'node_default', 1) unless $self->{isolate};
 261
 262         # set unbuffered and no echo
 263         $self->send_now('B',"0");
 264         $self->send_now('E',"0");
 265         $self->conn->echo(0) if $self->conn->can('echo');
 266
 267         # ping neighbour node stuff
 268         my $ping = $user->pingint;
 269         $ping = 5*60 unless defined $ping;
 270         $self->{pingint} = $ping;
 271         $self->{nopings} = $user->nopings || 2;
 272         $self->{pingtime} = [ ];
 273         $self->{pingave} = 999;
 274         $self->{metric} ||= 100;
 275         $self->{lastping} = $main::systime;
 276
 277         # send initialisation string
 278         unless ($self->{outbound}) {
 279                 $self->send(pc18());
 280         }
 281
 282         $self->state('init');
 283         $self->{pc50_t} = $main::systime;
 284
 285         # send info to all logged in thingies
 286         $self->tell_login('loginn');
 287
 288         # run a script send the output to the debug file
 289         my $script = new Script(lc $call) || new Script('node_default');
 290         $script->run($self) if $script;
 291 }
 292
 293 #
 294 # This is the normal pcxx despatcher
 295 #
 296 sub normal
 297 {
 298         my ($self, $line) = @_;
 299         my @field = split /\^/, $line;
 300         return unless @field;
 301
 302         pop @field if $field[-1] eq '~';
 303
 304 #       print join(',', @field), "\n";
 305
 306
 307         # process PC frames, this will fail unless the frame starts PCnn
 308         my ($pcno) = $field[0] =~ /^PC(\d\d)/; # just get the number
 309         return unless $pcno;
 310         return if $pcno < 10 || $pcno > 99;
 311
 312         # check for and dump bad protocol messages
 313         my $n = check($pcno, @field);
 314         if ($n) {
 315                 dbg("PCPROT: bad field $n, dumped (" . parray($checklist[$pcno-10]) . ")") if isdbg('chanerr');
 316                 return;
 317         }
 318
 319         # local processing 1
 320         my $pcr;
 321         eval {
 322                 $pcr = Local::pcprot($self, $pcno, @field);
 323         };
 324 #       dbg("Local::pcprot error $@") if isdbg('local') if $@;
 325         return if $pcr;
 326
 327  SWITCH: {
 328                 if ($pcno == 10) {              # incoming talk
 329
 330                         # rsfp check
 331                         return if $rspfcheck and !$self->rspfcheck(0, $field[6], $field[1]);
 332
 333                         # will we allow it at all?
 334                         if ($censorpc) {
 335                                 my @bad;
 336                                 if (@bad = BadWords::check($field[3])) {
 337                                         dbg("PCPROT: Bad words: @bad, dropped") if isdbg('chanerr');
 338                                         return;
 339                                 }
 340                         }
 341
 342                         # is it for me or one of mine?
 343                         my ($from, $to, $via, $call, $dxchan);
 344                         $from = $field[1];
 345                         if ($field[5] gt ' ') {
 346                                 $via = $field[2];
 347                                 $to = $field[5];
 348                         } else {
 349                                 $to = $field[2];
 350                         }
 351
 352                         # if we are converting announces to talk is it a dup?
 353                         if ($ann_to_talk) {
 354                                 if (AnnTalk::is_talk_candidate($from, $field[3]) && AnnTalk::dup($from, $to, $field[3])) {
 355                                         dbg("DXPROT: Dupe talk from announce, dropped") if isdbg('chanerr');
 356                                         return;
 357                                 }
 358                         }
 359
 360                         # it is here and logged on
 361                         $dxchan = DXChannel->get($main::myalias) if $to eq $main::mycall;
 362                         $dxchan = DXChannel->get($to) unless $dxchan;
 363                         if ($dxchan && $dxchan->is_user) {
 364                                 $field[3] =~ s/\%5E/^/g;
 365                                 $dxchan->talk($from, $to, $via, $field[3]);
 366                                 return;
 367                         }
 368
 369                         # is it elsewhere, visible on the cluster via the to address?
 370                         # note: this discards the via unless the to address is on
 371                         # the via address
 372                         my ($ref, $vref);
 373                         if ($ref = Route::get($to)) {
 374                                 $vref = Route::Node::get($via) if $via;
 375                                 $vref = undef unless $vref && grep $to eq $_, $vref->users;
 376                                 $ref->dxchan->talk($from, $to, $vref ? $via : undef, $field[3], $field[6]);
 377                                 return;
 378                         }
 379
 380                         # not visible here, send a message of condolence
 381                         $vref = undef;
 382                         $ref = Route::get($from);
 383                         $vref = $ref = Route::Node::get($field[6]) unless $ref;
 384                         if ($ref) {
 385                                 $dxchan = $ref->dxchan;
 386                                 $dxchan->talk($main::mycall, $from, $vref ? $vref->call : undef, $dxchan->msg('talknh', $to) );
 387                         }
 388                         return;
 389                 }
 390
 391                 if ($pcno == 11 || $pcno == 26) { # dx spot
 392
 393                         # route 'foreign' pc26s
 394                         if ($pcno == 26) {
 395                                 if ($field[7] ne $main::mycall) {
 396                                         $self->route($field[7], $line);
 397                                         return;
 398                                 }
 399                         }
 400
 401                         # rsfp check
 402 #                       return if $rspfcheck and !$self->rspfcheck(1, $field[7], $field[6]);
 403
 404                         # if this is a 'nodx' node then ignore it
 405                         if ($badnode->in($field[7])) {
 406                                 dbg("PCPROT: Bad Node, dropped") if isdbg('chanerr');
 407                                 return;
 408                         }
 409
 410                         # if this is a 'bad spotter' user then ignore it
 411                         if ($badspotter->in($field[6])) {
 412                                 dbg("PCPROT: Bad Spotter, dropped") if isdbg('chanerr');
 413                                 return;
 414                         }
 415
 416                         # convert the date to a unix date
 417                         my $d = cltounix($field[3], $field[4]);
 418                         # bang out (and don't pass on) if date is invalid or the spot is too old (or too young)
 419                         if (!$d || ($pcno == 11 && ($d < $main::systime - $pc11_max_age || $d > $main::systime + 900))) {
 420                                 dbg("PCPROT: Spot ignored, invalid date or out of range ($field[3] $field[4])\n") if isdbg('chanerr');
 421                                 return;
 422                         }
 423
 424                         # is it 'baddx'
 425                         if ($baddx->in($field[2]) || BadWords::check($field[2]) || $field[2] =~ /COCK/) {
 426                                 dbg("PCPROT: Bad DX spot, ignored") if isdbg('chanerr');
 427                                 return;
 428                         }
 429
 430                         # do some de-duping
 431                         $field[5] =~ s/^\s+//;      # take any leading blanks off
 432                         $field[2] = unpad($field[2]);   # take off leading and trailing blanks from spotted callsign
 433                         if ($field[2] =~ /BUST\w*$/) {
 434                                 dbg("PCPROT: useless 'BUSTED' spot") if isdbg('chanerr');
 435                                 return;
 436                         }
 437                         if ($censorpc) {
 438                                 my @bad;
 439                                 if (@bad = BadWords::check($field[5])) {
 440                                         dbg("PCPROT: Bad words: @bad, dropped") if isdbg('chanerr');
 441                                         return;
 442                                 }
 443                         }
 444
 445
 446                         my @spot = Spot::prepare($field[1], $field[2], $d, $field[5], $field[6], $field[7]);
 447                         # global spot filtering on INPUT
 448                         if ($self->{inspotsfilter}) {
 449                                 my ($filter, $hops) = $self->{inspotsfilter}->it(@spot);
 450                                 unless ($filter) {
 451                                         dbg("PCPROT: Rejected by input spot filter") if isdbg('chanerr');
 452                                         return;
 453                                 }
 454                         }
 455
 456                         # this goes after the input filtering, but before the add
 457                         # so that if it is input filtered, it isn't added to the dup
 458                         # list. This allows it to come in from a "legitimate" source
 459                         if (Spot::dup($field[1], $field[2], $d, $field[5])) {
 460                                 dbg("PCPROT: Duplicate Spot ignored\n") if isdbg('chanerr');
 461                                 return;
 462                         }
 463
 464                         # add it
 465                         Spot::add(@spot);
 466
 467             #
 468                         # @spot at this point contains:-
 469             # freq, spotted call, time, text, spotter, spotted cc, spotters cc, orig node
 470                         # then  spotted itu, spotted cq, spotters itu, spotters cq
 471                         # you should be able to route on any of these
 472             #
 473
 474                         # fix up qra locators of known users
 475                         my $user = DXUser->get_current($spot[4]);
 476                         if ($user) {
 477                                 my $qra = $user->qra;
 478                                 unless ($qra && is_qra($qra)) {
 479                                         my $lat = $user->lat;
 480                                         my $long = $user->long;
 481                                         if (defined $lat && defined $long) {
 482                                                 $user->qra(DXBearing::lltoqra($lat, $long));
 483                                                 $user->put;
 484                                         }
 485                                 }
 486
 487                                 # send a remote command to a distant cluster if it is visible and there is no
 488                                 # qra locator and we havn't done it for a month.
 489
 490                                 unless ($user->qra) {
 491                                         my $node;
 492                                         my $to = $user->homenode;
 493                                         my $last = $user->lastoper || 0;
 494                                         if ($send_opernam && $to && $to ne $main::mycall && $main::systime > $last + $DXUser::lastoperinterval && ($node = Route::Node::get($to)) ) {
 495                                                 my $cmd = "forward/opernam $spot[4]";
 496                                                 # send the rcmd but we aren't interested in the replies...
 497                                                 my $dxchan = $node->dxchan;
 498                                                 if ($dxchan && $dxchan->is_clx) {
 499                                                         route(undef, $to, pc84($main::mycall, $to, $main::mycall, $cmd));
 500                                                 } else {
 501                                                         route(undef, $to, pc34($main::mycall, $to, $cmd));
 502                                                 }
 503                                                 if ($to ne $field[7]) {
 504                                                         $to = $field[7];
 505                                                         $node = Route::Node::get($to);
 506                                                         if ($node) {
 507                                                                 $dxchan = $node->dxchan;
 508                                                                 if ($dxchan && $dxchan->is_clx) {
 509                                                                         route(undef, $to, pc84($main::mycall, $to, $main::mycall, $cmd));
 510                                                                 } else {
 511                                                                         route(undef, $to, pc34($main::mycall, $to, $cmd));
 512                                                                 }
 513                                                         }
 514                                                 }
 515                                                 $user->lastoper($main::systime);
 516                                                 $user->put;
 517                                         }
 518                                 }
 519                         }
 520
 521                         # local processing
 522                         my $r;
 523                         eval {
 524                                 $r = Local::spot($self, @spot);
 525                         };
 526 #                       dbg("Local::spot1 error $@") if isdbg('local') if $@;
 527                         return if $r;
 528
 529                         # DON'T be silly and send on PC26s!
 530                         return if $pcno == 26;
 531
 532                         # send out the filtered spots
 533                         send_dx_spot($self, $line, @spot) if @spot;
 534                         return;
 535                 }
 536
 537                 if ($pcno == 12) {              # announces
 538
 539 #                       return if $rspfcheck and !$self->rspfcheck(1, $field[5], $field[1]);
 540
 541                         # announce duplicate checking
 542                         $field[3] =~ s/^\s+//;  # remove leading blanks
 543
 544                         if ($censorpc) {
 545                                 my @bad;
 546                                 if (@bad = BadWords::check($field[3])) {
 547                                         dbg("PCPROT: Bad words: @bad, dropped") if isdbg('chanerr');
 548                                         return;
 549                                 }
 550                         }
 551
 552                         if ($field[2] eq '*' || $field[2] eq $main::mycall) {
 553
 554
 555                                 # here's a bit of fun, convert incoming ann with a callsign in the first word
 556                                 # or one saying 'to <call>' to a talk if we can route to the recipient
 557                                 if ($ann_to_talk) {
 558                                         my $call = AnnTalk::is_talk_candidate($field[1], $field[3]);
 559                                         if ($call) {
 560                                                 my $ref = Route::get($call);
 561                                                 if ($ref) {
 562                                                         my $dxchan = $ref->dxchan;
 563                                                         $dxchan->talk($field[1], $call, undef, $field[3], $field[5]) if $dxchan != $self;
 564                                                         return;
 565                                                 }
 566                                         }
 567                                 }
 568
 569                                 # send it
 570                                 $self->send_announce($line, @field[1..6]);
 571                         } else {
 572                                 $self->route($field[2], $line);
 573                         }
 574                         return;
 575                 }
 576
 577                 if ($pcno == 13) {
 578                         last SWITCH;
 579                 }
 580                 if ($pcno == 14) {
 581                         last SWITCH;
 582                 }
 583                 if ($pcno == 15) {
 584                         last SWITCH;
 585                 }
 586
 587                 if ($pcno == 16) {              # add a user
 588
 589                         if (eph_dup($line)) {
 590                                 dbg("PCPROT: dup PC16 detected") if isdbg('chanerr');
 591                                 return;
 592                         }
 593
 594                         # general checks
 595                         my $dxchan;
 596                         my $ncall = $field[1];
 597                         my $newline = "PC16^";
 598
 599                         if ($ncall eq $main::mycall) {
 600                                 dbg("PCPROT: trying to alter config on this node from outside!") if isdbg('chanerr');
 601                                 return;
 602                         }
 603                         my $parent = Route::Node::get($ncall);
 604                         unless ($parent) {
 605                                 dbg("PCPROT: Node $ncall not in config") if isdbg('chanerr');
 606                                 return;
 607                         }
 608                         $dxchan = $parent->dxchan;
 609                         if ($dxchan && $dxchan ne $self) {
 610                                 dbg("PCPROT: PC16 from $self->{call} trying to alter locally connected $ncall, ignored!") if isdbg('chanerr');
 611                                 return;
 612                         }
 613
 614                         # input filter if required
 615                         return unless $self->in_filter_route($parent);
 616
 617                         my $i;
 618                         my @rout;
 619                         for ($i = 2; $i < $#field; $i++) {
 620                                 my ($call, $conf, $here) = $field[$i] =~ /^(\S+) (\S) (\d)/o;
 621                                 next unless $call && $conf && defined $here && is_callsign($call);
 622                                 next if $call eq $main::mycall;
 623
 624                                 eph_del_regex("^PC17\\^$call\\^$ncall");
 625
 626                                 $conf = $conf eq '*';
 627
 628                                 # reject this if we think it is a node already
 629                                 my $r = Route::Node::get($call);
 630                                 my $u = DXUser->get_current($call) unless $r;
 631                                 if ($r || ($u && $u->is_node)) {
 632                                         dbg("PCPROT: $call is a node") if isdbg('chanerr');
 633                                         next;
 634                                 }
 635
 636                                 $r = Route::User::get($call);
 637                                 my $flags = Route::here($here)|Route::conf($conf);
 638
 639                                 if ($r) {
 640                                         if ($r->flags != $flags) {
 641                                                 $r->flags($flags);
 642                                                 push @rout, $r;
 643                                         }
 644                                         $r->addparent($parent);
 645                                 } else {
 646                                         push @rout, $parent->add_user($call, $flags);
 647                                 }
 648
 649                                 # add this station to the user database, if required
 650                                 $call =~ s/-\d+$//o;        # remove ssid for users
 651                                 my $user = DXUser->get_current($call);
 652                                 $user = DXUser->new($call) if !$user;
 653                                 $user->homenode($parent->call) if !$user->homenode;
 654                                 $user->node($parent->call);
 655                                 $user->lastin($main::systime) unless DXChannel->get($call);
 656                                 $user->put;
 657                         }
 658
 659                         # queue up any messages (look for privates only)
 660                         DXMsg::queue_msg(1) if $self->state eq 'normal';
 661
 662                         $self->route_pc16($parent, @rout) if @rout;
 663                         return;
 664                 }
 665
 666                 if ($pcno == 17) {              # remove a user
 667                         my $dxchan;
 668                         my $ncall = $field[2];
 669                         my $ucall = $field[1];
 670
 671                         eph_del_regex("^PC16\\^$ncall.*$ucall");
 672
 673                         if ($ncall eq $main::mycall) {
 674                                 dbg("PCPROT: trying to alter config on this node from outside!") if isdbg('chanerr');
 675                                 return;
 676                         }
 677
 678                         my $uref = Route::User::get($ucall);
 679                         unless ($uref) {
 680                                 dbg("PCPROT: Route::User $ucall not in config") if isdbg('chanerr');
 681                                 return;
 682                         }
 683                         my $parent = Route::Node::get($ncall);
 684                         unless ($parent) {
 685                                 dbg("PCPROT: Route::Node $ncall not in config") if isdbg('chanerr');
 686                                 return;
 687                         }
 688
 689                         $dxchan = $parent->dxchan;
 690                         if ($dxchan && $dxchan ne $self) {
 691                                 dbg("PCPROT: PC17 from $self->{call} trying to alter locally connected $ncall, ignored!") if isdbg('chanerr');
 692                                 return;
 693                         }
 694
 695                         # input filter if required
 696                         return unless $self->in_filter_route($parent);
 697
 698                         $parent->del_user($uref);
 699
 700                         if (eph_dup($line)) {
 701                                 dbg("PCPROT: dup PC17 detected") if isdbg('chanerr');
 702                                 return;
 703                         }
 704
 705                         $self->route_pc17($parent, $uref);
 706                         return;
 707                 }
 708
 709                 if ($pcno == 18) {              # link request
 710                         $self->state('init');
 711
 712                         # first clear out any nodes on this dxchannel
 713                         my $parent = Route::Node::get($self->{call});
 714                         my @rout = $parent->del_nodes;
 715                         $self->route_pc21(@rout, $parent) if @rout;
 716                         $self->send_local_config();
 717                         $self->send(pc20());
 718                         return;             # we don't pass these on
 719                 }
 720
 721                 if ($pcno == 19) {              # incoming cluster list
 722                         my $i;
 723                         my $newline = "PC19^";
 724
 725                         if (eph_dup($line)) {
 726                                 dbg("PCPROT: dup PC19 detected") if isdbg('chanerr');
 727                                 return;
 728                         }
 729
 730                         # new routing list
 731                         my @rout;
 732                         my $parent = Route::Node::get($self->{call});
 733                         unless ($parent) {
 734                                 dbg("DXPROT: my parent $self->{call} has disappeared");
 735                                 $self->disconnect;
 736                                 return;
 737                         }
 738
 739                         # parse the PC19
 740                         for ($i = 1; $i < $#field-1; $i += 4) {
 741                                 my $here = $field[$i];
 742                                 my $call = uc $field[$i+1];
 743                                 my $conf = $field[$i+2];
 744                                 my $ver = $field[$i+3];
 745                                 next unless defined $here && defined $conf && is_callsign($call);
 746
 747                                 eph_del_regex("^PC(?:21\\^$call|17\\^[^\\^]+\\^$call)");
 748
 749                                 # check for sane parameters
 750 #                               $ver = 5000 if $ver eq '0000';
 751                                 next if $ver < 5000; # only works with version 5 software
 752                                 next if length $call < 3; # min 3 letter callsigns
 753                                 next if $call eq $main::mycall;
 754
 755                                 # check that this PC19 isn't trying to alter the wrong dxchan
 756                                 my $dxchan = DXChannel->get($call);
 757                                 if ($dxchan && $dxchan != $self) {
 758                                         dbg("PCPROT: PC19 from $self->{call} trying to alter wrong locally connected $call, ignored!") if isdbg('chanerr');
 759                                         next;
 760                                 }
 761
 762                                 # update it if required
 763                                 my $r = Route::Node::get($call);
 764                                 my $flags = Route::here($here)|Route::conf($conf);
 765                                 if ($r) {
 766                                         my $ar;
 767                                         if ($call ne $parent->call) {
 768                                                 if ($self->in_filter_route($r)) {
 769                                                         $ar = $parent->add($call, $ver, $flags);
 770                                                         push @rout, $ar if $ar;
 771                                                 } else {
 772                                                         next;
 773                                                 }
 774                                         }
 775                                         if ($r->version ne $ver || $r->flags != $flags) {
 776                                                 $r->version($ver);
 777                                                 $r->flags($flags);
 778                                                 push @rout, $r unless $ar;
 779                                         }
 780                                 } else {
 781                                         if ($call eq $self->{call}) {
 782                                                 dbg("DXPROT: my channel route for $call has disappeared");
 783                                                 next;
 784                                         };
 785
 786                                         my $new = Route->new($call);          # throw away
 787                                     if ($self->in_filter_route($new)) {
 788                                                 my $r = $parent->add($call, $ver, $flags);
 789                                                 push @rout, $r;
 790                                         } else {
 791                                                 next;
 792                                         }
 793                                 }
 794
 795                                 # unbusy and stop and outgoing mail (ie if somehow we receive another PC19 without a disconnect)
 796                                 my $mref = DXMsg::get_busy($call);
 797                                 $mref->stop_msg($call) if $mref;
 798
 799                                 # add this station to the user database, if required (don't remove SSID from nodes)
 800                                 my $user = DXUser->get_current($call);
 801                                 if (!$user) {
 802                                         $user = DXUser->new($call);
 803                                         $user->sort('A');
 804                                         $user->priv(1);                   # I have relented and defaulted nodes
 805                                         $user->lockout(1);
 806                                         $user->homenode($call);
 807                                         $user->node($call);
 808                                 }
 809                                 $user->lastin($main::systime) unless DXChannel->get($call);
 810                                 $user->put;
 811                         }
 812
 813
 814                         $self->route_pc19(@rout) if @rout;
 815                         return;
 816                 }
 817
 818                 if ($pcno == 20) {              # send local configuration
 819                         $self->send_local_config();
 820                         $self->send(pc22());
 821                         $self->state('normal');
 822                         $self->{lastping} = 0;
 823                         return;
 824                 }
 825
 826                 if ($pcno == 21) {              # delete a cluster from the list
 827                         my $call = uc $field[1];
 828
 829                         eph_del_regex("^PC1[79].*$call");
 830
 831                         # if I get a PC21 from the same callsign as self then treat it
 832                         # as a PC39: I have gone away
 833                         if ($call eq $self->call) {
 834                                 $self->disconnect(1);
 835                                 return;
 836                         }
 837
 838                         my @rout;
 839                         my $parent = Route::Node::get($self->{call});
 840                         unless ($parent) {
 841                                 dbg("DXPROT: my parent $self->{call} has disappeared");
 842                                 $self->disconnect;
 843                                 return;
 844                         }
 845                         if ($call ne $main::mycall) { # don't allow malicious buggers to disconnect me!
 846                                 my $node = Route::Node::get($call);
 847                                 if ($node) {
 848
 849                                         my $dxchan = DXChannel->get($call);
 850                                         if ($dxchan && $dxchan != $self) {
 851                                                 dbg("PCPROT: PC21 from $self->{call} trying to alter locally connected $call, ignored!") if isdbg('chanerr');
 852                                                 return;
 853                                         }
 854
 855                                         # input filter it
 856                                         return unless $self->in_filter_route($node);
 857
 858                                         # routing objects
 859                                         push @rout, $node->del($parent);
 860                                 }
 861                         } else {
 862                                 dbg("PCPROT: I WILL _NOT_ be disconnected!") if isdbg('chanerr');
 863                                 return;
 864                         }
 865
 866 #                       if (eph_dup($line)) {
 867 #                               dbg("PCPROT: dup PC21 detected") if isdbg('chanerr');
 868 #                               return;
 869 #                       }
 870
 871                         $self->route_pc21(@rout) if @rout;
 872                         return;
 873                 }
 874
 875                 if ($pcno == 22) {
 876                         $self->state('normal');
 877                         $self->{lastping} = 0;
 878                         return;
 879                 }
 880
 881                 if ($pcno == 23 || $pcno == 27) { # WWV info
 882
 883                         # route 'foreign' pc27s
 884                         if ($pcno == 27) {
 885                                 if ($field[8] ne $main::mycall) {
 886                                         $self->route($field[8], $line);
 887                                         return;
 888                                 }
 889                         }
 890
 891                         return if $rspfcheck and !$self->rspfcheck(1, $field[8], $field[7]);
 892
 893                         # do some de-duping
 894                         my $d = cltounix($field[1], sprintf("%02d18Z", $field[2]));
 895                         my $sfi = unpad($field[3]);
 896                         my $k = unpad($field[4]);
 897                         my $i = unpad($field[5]);
 898                         my ($r) = $field[6] =~ /R=(\d+)/;
 899                         $r = 0 unless $r;
 900                         if (($pcno == 23 && $d < $main::systime - $pc23_max_age) || $d > $main::systime + 1500 || $field[2] < 0 || $field[2] > 23) {
 901                                 dbg("PCPROT: WWV Date ($field[1] $field[2]) out of range") if isdbg('chanerr');
 902                                 return;
 903                         }
 904                         if (Geomag::dup($d,$sfi,$k,$i,$field[6])) {
 905                                 dbg("PCPROT: Dup WWV Spot ignored\n") if isdbg('chanerr');
 906                                 return;
 907                         }
 908                         $field[7] =~ s/-\d+$//o;            # remove spotter's ssid
 909
 910                         my $wwv = Geomag::update($d, $field[2], $sfi, $k, $i, @field[6..8], $r);
 911
 912                         my $rep;
 913                         eval {
 914                                 $rep = Local::wwv($self, $field[1], $field[2], $sfi, $k, $i, @field[6..8], $r);
 915                         };
 916 #                       dbg("Local::wwv2 error $@") if isdbg('local') if $@;
 917                         return if $rep;
 918
 919                         # DON'T be silly and send on PC27s!
 920                         return if $pcno == 27;
 921
 922                         # broadcast to the eager world
 923                         send_wwv_spot($self, $line, $d, $field[2], $sfi, $k, $i, @field[6..8]);
 924                         return;
 925                 }
 926
 927                 if ($pcno == 24) {              # set here status
 928                         my $call = uc $field[1];
 929                         my ($nref, $uref);
 930                         $nref = Route::Node::get($call);
 931                         $uref = Route::User::get($call);
 932                         return unless $nref || $uref;   # if we don't know where they are, it's pointless sending it on
 933
 934                         unless (eph_dup($line)) {
 935                                 $nref->here($field[2]) if $nref;
 936                                 $uref->here($field[2]) if $uref;
 937                                 my $ref = $nref || $uref;
 938                                 return unless $self->in_filter_route($ref);
 939                                 $self->route_pc24($ref, $field[3]);
 940                         }
 941                         return;
 942                 }
 943
 944                 if ($pcno == 25) {      # merge request
 945                         if ($field[1] ne $main::mycall) {
 946                                 $self->route($field[1], $line);
 947                                 return;
 948                         }
 949                         if ($field[2] eq $main::mycall) {
 950                                 dbg("PCPROT: Trying to merge to myself, ignored") if isdbg('chanerr');
 951                                 return;
 952                         }
 953
 954                         Log('DXProt', "Merge request for $field[3] spots and $field[4] WWV from $field[2]");
 955
 956                         # spots
 957                         if ($field[3] > 0) {
 958                                 my @in = reverse Spot::search(1, undef, undef, 0, $field[3]);
 959                                 my $in;
 960                                 foreach $in (@in) {
 961                                         $self->send(pc26(@{$in}[0..4], $field[2]));
 962                                 }
 963                         }
 964
 965                         # wwv
 966                         if ($field[4] > 0) {
 967                                 my @in = reverse Geomag::search(0, $field[4], time, 1);
 968                                 my $in;
 969                                 foreach $in (@in) {
 970                                         $self->send(pc27(@{$in}[0..5], $field[2]));
 971                                 }
 972                         }
 973                         return;
 974                 }
 975
 976                 if (($pcno >= 28 && $pcno <= 33) || $pcno == 40 || $pcno == 42 || $pcno == 49) { # mail/file handling
 977                         return if $pcno == 49 && eph_dup($line);
 978                         if ($pcno == 49 || $field[1] eq $main::mycall) {
 979                                 DXMsg::process($self, $line);
 980                         } else {
 981                                 $self->route($field[1], $line) unless $self->is_clx;
 982                         }
 983                         return;
 984                 }
 985
 986                 if ($pcno == 34 || $pcno == 36) { # remote commands (incoming)
 987                         if (eph_dup($line, $eph_pc34_restime)) {
 988                                 dbg("PCPROT: dupe") if isdbg('chanerr');
 989                         } else {
 990                                 $self->process_rcmd($field[1], $field[2], $field[2], $field[3]);
 991                         }
 992                         return;
 993                 }
 994
 995                 if ($pcno == 35) {              # remote command replies
 996                         eph_del_regex("^PC35\\^$field[2]\\^$field[1]\\^");
 997                         $self->process_rcmd_reply($field[1], $field[2], $field[1], $field[3]);
 998                         return;
 999                 }
1000
1001                 # for pc 37 see 44 onwards
1002
1003                 if ($pcno == 38) {              # node connected list from neighbour
1004                         return;
1005                 }
1006
1007                 if ($pcno == 39) {              # incoming disconnect
1008                         if ($field[1] eq $self->{call}) {
1009                                 $self->disconnect(1);
1010                         } else {
1011                                 dbg("PCPROT: came in on wrong channel") if isdbg('chanerr');
1012                         }
1013                         return;
1014                 }
1015
1016                 if ($pcno == 41) {              # user info
1017                         my $call = $field[1];
1018
1019                         if (eph_dup($line, $eph_info_restime)) {
1020                                 dbg("PCPROT: dupe") if isdbg('chanerr');
1021                                 return;
1022                         }
1023
1024                         # input filter if required
1025 #                       my $ref = Route::get($call) || Route->new($call);
1026 #                       return unless $self->in_filter_route($ref);
1027
1028                         if ($field[3] eq $field[2] || $field[3] =~ /^\s*$/) {
1029                                 dbg('PCPROT: invalid value') if isdbg('chanerr');
1030                                 return;
1031                         }
1032
1033                         # add this station to the user database, if required
1034                         my $user = DXUser->get_current($call);
1035                         $user = DXUser->new($call) if !$user;
1036
1037                         if ($field[2] == 1) {
1038                                 $user->name($field[3]);
1039                         } elsif ($field[2] == 2) {
1040                                 $user->qth($field[3]);
1041                         } elsif ($field[2] == 3) {
1042                                 if (is_latlong($field[3])) {
1043                                         my ($lat, $long) = DXBearing::stoll($field[3]);
1044                                         $user->lat($lat);
1045                                         $user->long($long);
1046                                         $user->qra(DXBearing::lltoqra($lat, $long));
1047                                 } else {
1048                                         dbg('PCPROT: not a valid lat/long') if isdbg('chanerr');
1049                                         return;
1050                                 }
1051                         } elsif ($field[2] == 4) {
1052                                 $user->homenode($field[3]);
1053                         } elsif ($field[2] == 5) {
1054                                 if (is_qra(uc $field[3])) {
1055                                         my ($lat, $long) = DXBearing::qratoll(uc $field[3]);
1056                                         $user->lat($lat);
1057                                         $user->long($long);
1058                                         $user->qra(uc $field[3]);
1059                                 } else {
1060                                         dbg('PCPROT: not a valid QRA locator') if isdbg('chanerr');
1061                                         return;
1062                                 }
1063                         }
1064                         $user->lastoper($main::systime);   # to cut down on excessive for/opers being generated
1065                         $user->put;
1066
1067                         unless ($self->{isolate}) {
1068                                 DXChannel::broadcast_nodes($line, $self); # send it to everyone but me
1069                         }
1070
1071 #  perhaps this IS what we want after all
1072 #                       $self->route_pc41($ref, $call, $field[2], $field[3], $field[4]);
1073                         return;
1074                 }
1075
1076                 if ($pcno == 43) {
1077                         last SWITCH;
1078                 }
1079
1080                 if ($pcno == 37 || $pcno == 44 || $pcno == 45 || $pcno == 46 || $pcno == 47 || $pcno == 48) {
1081                         DXDb::process($self, $line);
1082                         return;
1083                 }
1084
1085                 if ($pcno == 50) {              # keep alive/user list
1086                         my $call = $field[1];
1087                         my $node = Route::Node::get($call);
1088                         if ($node) {
1089                                 return unless $node->call eq $self->{call};
1090                                 $node->usercount($field[2]);
1091
1092                                 # input filter if required
1093                                 return unless $self->in_filter_route($node);
1094
1095                                 $self->route_pc50($node, $field[2], $field[3]) unless eph_dup($line);
1096                         }
1097                         return;
1098                 }
1099
1100                 if ($pcno == 51) {              # incoming ping requests/answers
1101                         my $to = $field[1];
1102                         my $from = $field[2];
1103                         my $flag = $field[3];
1104
1105
1106                         # is it for us?
1107                         if ($to eq $main::mycall) {
1108                                 if ($flag == 1) {
1109                                         $self->send(pc51($from, $to, '0'));
1110                                 } else {
1111                                         # it's a reply, look in the ping list for this one
1112                                         my $ref = $pings{$from};
1113                                         if ($ref) {
1114                                                 my $tochan =  DXChannel->get($from);
1115                                                 while (@$ref) {
1116                                                         my $r = shift @$ref;
1117                                                         my $dxchan = DXChannel->get($r->{call});
1118                                                         next unless $dxchan;
1119                                                         my $t = tv_interval($r->{t}, [ gettimeofday ]);
1120                                                         if ($dxchan->is_user) {
1121                                                                 my $s = sprintf "%.2f", $t;
1122                                                                 my $ave = sprintf "%.2f", $tochan ? ($tochan->{pingave} || $t) : $t;
1123                                                                 $dxchan->send($dxchan->msg('pingi', $from, $s, $ave))
1124                                                         } elsif ($dxchan->is_node) {
1125                                                                 if ($tochan) {
1126                                                                         my $nopings = $tochan->user->nopings || 2;
1127                                                                         push @{$tochan->{pingtime}}, $t;
1128                                                                         shift @{$tochan->{pingtime}} if @{$tochan->{pingtime}} > 6;
1129
1130                                                                         # cope with a missed ping, this means you must set the pingint large enough
1131                                                                         if ($t > $tochan->{pingint}  && $t < 2 * $tochan->{pingint} ) {
1132                                                                                 $t -= $tochan->{pingint};
1133                                                                         }
1134
1135                                                                         # calc smoothed RTT a la TCP
1136                                                                         if (@{$tochan->{pingtime}} == 1) {
1137                                                                                 $tochan->{pingave} = $t;
1138                                                                         } else {
1139                                                                                 $tochan->{pingave} = $tochan->{pingave} + (($t - $tochan->{pingave}) / 6);
1140                                                                         }
1141 #                                                                       my $st;
1142 #                                                                       for (@{$tochan->{pingtime}}) {
1143 #                                                                               $st += $_;
1144 #                                                                       }
1145 #                                                                       $tochan->{pingave} = $st / @{$tochan->{pingtime}};
1146                                                                         $tochan->{nopings} = $nopings; # pump up the timer
1147                                                                 }
1148                                                         }
1149                                                 }
1150                                         }
1151                                 }
1152                         } else {
1153                                 if (eph_dup($line)) {
1154                                         dbg("PCPROT: dup PC51 detected") if isdbg('chanerr');
1155                                         return;
1156                                 }
1157                                 # route down an appropriate thingy
1158                                 $self->route($to, $line);
1159                         }
1160                         return;
1161                 }
1162
1163                 if ($pcno == 75) {              # dunno but route it
1164                         my $call = $field[1];
1165                         if ($call ne $main::mycall) {
1166                                 $self->route($call, $line);
1167                         }
1168                         return;
1169                 }
1170
1171                 if ($pcno == 73) {  # WCY broadcasts
1172                         my $call = $field[1];
1173
1174                         # do some de-duping
1175                         my $d = cltounix($call, sprintf("%02d18Z", $field[2]));
1176                         if (($pcno == 23 && $d < $main::systime - $pc23_max_age) || $d > $main::systime + 1500 || $field[2] < 0 || $field[2] > 23) {
1177                                 dbg("PCPROT: WCY Date ($call $field[2]) out of range") if isdbg('chanerr');
1178                                 return;
1179                         }
1180                         @field = map { unpad($_) } @field;
1181                         if (WCY::dup($d)) {
1182                                 dbg("PCPROT: Dup WCY Spot ignored\n") if isdbg('chanerr');
1183                                 return;
1184                         }
1185
1186                         my $wcy = WCY::update($d, @field[2..12]);
1187
1188                         my $rep;
1189                         eval {
1190                                 $rep = Local::wcy($self, @field[1..12]);
1191                         };
1192                         # dbg("Local::wcy error $@") if isdbg('local') if $@;
1193                         return if $rep;
1194
1195                         # broadcast to the eager world
1196                         send_wcy_spot($self, $line, $d, @field[2..12]);
1197                         return;
1198                 }
1199
1200                 if ($pcno == 84) { # remote commands (incoming)
1201                         $self->process_rcmd($field[1], $field[2], $field[3], $field[4]);
1202                         return;
1203                 }
1204
1205                 if ($pcno == 85) {              # remote command replies
1206                         $self->process_rcmd_reply($field[1], $field[2], $field[3], $field[4]);
1207
1208                         return;
1209                 }
1210         }
1211
1212         # if get here then rebroadcast the thing with its Hop count decremented (if
1213         # there is one). If it has a hop count and it decrements to zero then don't
1214         # rebroadcast it.
1215         #
1216         # NOTE - don't arrive here UNLESS YOU WANT this lump of protocol to be
1217         #        REBROADCAST!!!!
1218         #
1219
1220         if (eph_dup($line)) {
1221                 dbg("PCPROT: Ephemeral dup, dropped") if isdbg('chanerr');
1222         } else {
1223                 unless ($self->{isolate}) {
1224                         DXChannel::broadcast_nodes($line, $self); # send it to everyone but me
1225                 }
1226         }
1227 }
1228
1229 #
1230 # This is called from inside the main cluster processing loop and is used
1231 # for despatching commands that are doing some long processing job
1232 #
1233 sub process
1234 {
1235         my $t = time;
1236         my @dxchan = DXChannel->get_all();
1237         my $dxchan;
1238         my $pc50s;
1239
1240         # send out a pc50 on EVERY channel all at once
1241         if ($t >= $last_pc50 + $DXProt::pc50_interval) {
1242                 $pc50s = pc50($main::me, scalar DXChannel::get_all_users);
1243                 eph_dup($pc50s);
1244                 $last_pc50 = $t;
1245         }
1246
1247         foreach $dxchan (@dxchan) {
1248                 next unless $dxchan->is_node();
1249                 next if $dxchan == $main::me;
1250
1251                 # send the pc50
1252                 $dxchan->send($pc50s) if $pc50s;
1253
1254                 # send a ping out on this channel
1255                 if ($dxchan->{pingint} && $t >= $dxchan->{pingint} + $dxchan->{lastping}) {
1256                         if ($dxchan->{nopings} <= 0) {
1257                                 $dxchan->disconnect;
1258                         } else {
1259                                 addping($main::mycall, $dxchan->call);
1260                                 $dxchan->{nopings} -= 1;
1261                                 $dxchan->{lastping} = $t;
1262                         }
1263                 }
1264         }
1265
1266         # every ten seconds
1267         if ($t - $last10 >= 10) {
1268                 # clean out ephemera
1269
1270                 eph_clean();
1271
1272                 $last10 = $t;
1273         }
1274
1275         if ($main::systime - 3600 > $last_hour) {
1276                 $last_hour = $main::systime;
1277         }
1278 }
1279
1280 #
1281 # finish up a pc context
1282 #
1283
1284 #
1285 # some active measures
1286 #
1287
1288 sub send_dx_spot
1289 {
1290         my $self = shift;
1291         my $line = shift;
1292         my @dxchan = DXChannel->get_all();
1293         my $dxchan;
1294
1295         # send it if it isn't the except list and isn't isolated and still has a hop count
1296         # taking into account filtering and so on
1297         foreach $dxchan (@dxchan) {
1298                 next if $dxchan == $main::me;
1299                 next if $dxchan == $self && $self->is_node;
1300                 $dxchan->dx_spot($line, $self->{isolate}, @_, $self->{call});
1301         }
1302 }
1303
1304 sub dx_spot
1305 {
1306         my $self = shift;
1307         my $line = shift;
1308         my $isolate = shift;
1309         my ($filter, $hops);
1310
1311         if ($self->{spotsfilter}) {
1312                 ($filter, $hops) = $self->{spotsfilter}->it(@_);
1313                 return unless $filter;
1314         }
1315         send_prot_line($self, $filter, $hops, $isolate, $line);
1316 }
1317
1318 sub send_prot_line
1319 {
1320         my ($self, $filter, $hops, $isolate, $line) = @_;
1321         my $routeit;
1322
1323         if ($hops) {
1324                 $routeit = $line;
1325                 $routeit =~ s/\^H\d+\^\~$/\^H$hops\^\~/;
1326         } else {
1327                 $routeit = adjust_hops($self, $line);  # adjust its hop count by node name
1328                 return unless $routeit;
1329         }
1330         if ($filter) {
1331                 $self->send($routeit);
1332         } else {
1333                 $self->send($routeit) unless $self->{isolate} || $isolate;
1334         }
1335 }
1336
1337
1338 sub send_wwv_spot
1339 {
1340         my $self = shift;
1341         my $line = shift;
1342         my @dxchan = DXChannel->get_all();
1343         my $dxchan;
1344         my ($wwv_dxcc, $wwv_itu, $wwv_cq, $org_dxcc, $org_itu, $org_cq) = (0..0);
1345         my @dxcc = Prefix::extract($_[6]);
1346         if (@dxcc > 0) {
1347                 $wwv_dxcc = $dxcc[1]->dxcc;
1348                 $wwv_itu = $dxcc[1]->itu;
1349                 $wwv_cq = $dxcc[1]->cq;
1350         }
1351         @dxcc = Prefix::extract($_[7]);
1352         if (@dxcc > 0) {
1353                 $org_dxcc = $dxcc[1]->dxcc;
1354                 $org_itu = $dxcc[1]->itu;
1355                 $org_cq = $dxcc[1]->cq;
1356         }
1357
1358         # send it if it isn't the except list and isn't isolated and still has a hop count
1359         # taking into account filtering and so on
1360         foreach $dxchan (@dxchan) {
1361                 next if $dxchan == $main::me;
1362                 next if $dxchan == $self && $self->is_node;
1363                 my $routeit;
1364                 my ($filter, $hops);
1365
1366                 $dxchan->wwv($line, $self->{isolate}, @_, $self->{call}, $wwv_dxcc, $wwv_itu, $wwv_cq, $org_dxcc, $org_itu, $org_cq);
1367         }
1368
1369 }
1370
1371 sub wwv
1372 {
1373         my $self = shift;
1374         my $line = shift;
1375         my $isolate = shift;
1376         my ($filter, $hops);
1377
1378         if ($self->{wwvfilter}) {
1379                 ($filter, $hops) = $self->{wwvfilter}->it(@_);
1380                 return unless $filter;
1381         }
1382         send_prot_line($self, $filter, $hops, $isolate, $line)
1383 }
1384
1385 sub send_wcy_spot
1386 {
1387         my $self = shift;
1388         my $line = shift;
1389         my @dxchan = DXChannel->get_all();
1390         my $dxchan;
1391         my ($wcy_dxcc, $wcy_itu, $wcy_cq, $org_dxcc, $org_itu, $org_cq) = (0..0);
1392         my @dxcc = Prefix::extract($_[10]);
1393         if (@dxcc > 0) {
1394                 $wcy_dxcc = $dxcc[1]->dxcc;
1395                 $wcy_itu = $dxcc[1]->itu;
1396                 $wcy_cq = $dxcc[1]->cq;
1397         }
1398         @dxcc = Prefix::extract($_[11]);
1399         if (@dxcc > 0) {
1400                 $org_dxcc = $dxcc[1]->dxcc;
1401                 $org_itu = $dxcc[1]->itu;
1402                 $org_cq = $dxcc[1]->cq;
1403         }
1404
1405         # send it if it isn't the except list and isn't isolated and still has a hop count
1406         # taking into account filtering and so on
1407         foreach $dxchan (@dxchan) {
1408                 next if $dxchan == $main::me;
1409                 next if $dxchan == $self;
1410
1411                 $dxchan->wcy($line, $self->{isolate}, @_, $self->{call}, $wcy_dxcc, $wcy_itu, $wcy_cq, $org_dxcc, $org_itu, $org_cq);
1412         }
1413 }
1414
1415 sub wcy
1416 {
1417         my $self = shift;
1418         my $line = shift;
1419         my $isolate = shift;
1420         my ($filter, $hops);
1421
1422         if ($self->{wcyfilter}) {
1423                 ($filter, $hops) = $self->{wcyfilter}->it(@_);
1424                 return unless $filter;
1425         }
1426         send_prot_line($self, $filter, $hops, $isolate, $line) if $self->is_clx || $self->is_spider || $self->is_dxnet;
1427 }
1428
1429 # send an announce
1430 sub send_announce
1431 {
1432         my $self = shift;
1433         my $line = shift;
1434         my @dxchan = DXChannel->get_all();
1435         my $dxchan;
1436         my $target;
1437         my $to = 'To ';
1438         my $text = unpad($_[2]);
1439
1440         if ($_[3] eq '*') {     # sysops
1441                 $target = "SYSOP";
1442         } elsif ($_[3] gt ' ') { # speciality list handling
1443                 my ($name) = split /\./, $_[3];
1444                 $target = "$name"; # put the rest in later (if bothered)
1445         }
1446
1447         if ($_[5] eq '1') {
1448                 $target = "WX";
1449                 $to = '';
1450         }
1451         $target = "ALL" if !$target;
1452
1453
1454         # obtain country codes etc
1455         my ($ann_dxcc, $ann_itu, $ann_cq, $org_dxcc, $org_itu, $org_cq) = (0..0);
1456         my @dxcc = Prefix::extract($_[0]);
1457         if (@dxcc > 0) {
1458                 $ann_dxcc = $dxcc[1]->dxcc;
1459                 $ann_itu = $dxcc[1]->itu;
1460                 $ann_cq = $dxcc[1]->cq;
1461         }
1462         @dxcc = Prefix::extract($_[4]);
1463         if (@dxcc > 0) {
1464                 $org_dxcc = $dxcc[1]->dxcc;
1465                 $org_itu = $dxcc[1]->itu;
1466                 $org_cq = $dxcc[1]->cq;
1467         }
1468
1469         if ($self->{inannfilter}) {
1470                 my ($filter, $hops) =
1471                         $self->{inannfilter}->it(@_, $self->{call},
1472                                                                          $ann_dxcc, $ann_itu, $ann_cq,
1473                                                                          $org_dxcc, $org_itu, $org_cq);
1474                 unless ($filter) {
1475                         dbg("PCPROT: Rejected by input announce filter") if isdbg('chanerr');
1476                         return;
1477                 }
1478         }
1479
1480         if (AnnTalk::dup($_[0], $_[1], $_[2])) {
1481                 dbg("PCPROT: Duplicate Announce ignored") if isdbg('chanerr');
1482                 return;
1483         }
1484
1485         Log('ann', $target, $_[0], $text);
1486
1487         # send it if it isn't the except list and isn't isolated and still has a hop count
1488         # taking into account filtering and so on
1489         foreach $dxchan (@dxchan) {
1490                 next if $dxchan == $main::me;
1491                 next if $dxchan == $self && $self->is_node;
1492                 $dxchan->announce($line, $self->{isolate}, $to, $target, $text, @_, $self->{call}, $ann_dxcc, $ann_itu, $ann_cq, $org_dxcc, $org_itu, $org_cq);
1493         }
1494 }
1495
1496 sub announce
1497 {
1498         my $self = shift;
1499         my $line = shift;
1500         my $isolate = shift;
1501         my $to = shift;
1502         my $target = shift;
1503         my $text = shift;
1504         my ($filter, $hops);
1505
1506         if ($self->{annfilter}) {
1507                 ($filter, $hops) = $self->{annfilter}->it(@_);
1508                 return unless $filter;
1509         }
1510         send_prot_line($self, $filter, $hops, $isolate, $line) unless $_[1] eq $main::mycall;
1511 }
1512
1513
1514 sub send_local_config
1515 {
1516         my $self = shift;
1517         my $n;
1518         my @nodes;
1519         my @localnodes;
1520         my @remotenodes;
1521
1522         dbg('DXProt::send_local_config') if isdbg('trace');
1523
1524         # send our nodes
1525         if ($self->{isolate}) {
1526                 @localnodes = ( $main::routeroot );
1527         } else {
1528                 # create a list of all the nodes that are not connected to this connection
1529                 # and are not themselves isolated, this to make sure that isolated nodes
1530         # don't appear outside of this node
1531                 my @dxchan = grep { $_->call ne $main::mycall && $_ != $self && !$_->{isolate} } DXChannel::get_all_nodes();
1532                 @localnodes = map { my $r = Route::Node::get($_->{call}); $r ? $r : () } @dxchan if @dxchan;
1533                 my @intcalls = map { $_->nodes } @localnodes if @localnodes;
1534                 my $ref = Route::Node::get($self->{call});
1535                 my @rnodes = $ref->nodes;
1536                 for my $n (@intcalls) {
1537                         push @remotenodes, Route::Node::get($n) unless grep $n eq $_, @rnodes;
1538                 }
1539                 unshift @localnodes, $main::routeroot;
1540         }
1541
1542         send_route($self, \&pc19, scalar(@localnodes)+scalar(@remotenodes), @localnodes, @remotenodes);
1543
1544         # get all the users connected on the above nodes and send them out
1545         foreach $n (@localnodes, @remotenodes) {
1546                 if ($n) {
1547                         send_route($self, \&pc16, 1, $n, map {my $r = Route::User::get($_); $r ? ($r) : ()} $n->users);
1548                 } else {
1549                         dbg("sent a null value") if isdbg('chanerr');
1550                 }
1551         }
1552 }
1553
1554 #
1555 # route a message down an appropriate interface for a callsign
1556 #
1557 # is called route(to, pcline);
1558 #
1559 sub route
1560 {
1561         my ($self, $call, $line) = @_;
1562
1563         if (ref $self && $call eq $self->{call}) {
1564                 dbg("PCPROT: Trying to route back to source, dropped") if isdbg('chanerr');
1565                 return;
1566         }
1567
1568         # always send it down the local interface if available
1569         my $dxchan = DXChannel->get($call);
1570         unless ($dxchan) {
1571                 my $cl = Route::get($call);
1572                 $dxchan = $cl->dxchan if $cl;
1573                 if (ref $dxchan) {
1574                         if (ref $self && $dxchan eq $self) {
1575                                 dbg("PCPROT: Trying to route back to source, dropped") if isdbg('chanerr');
1576                                 return;
1577                         }
1578                 }
1579         }
1580         if ($dxchan) {
1581                 my $routeit = adjust_hops($dxchan, $line);   # adjust its hop count by node name
1582                 if ($routeit) {
1583                         $dxchan->send($routeit) unless $dxchan == $main::me;
1584                 }
1585         } else {
1586                 dbg("PCPROT: No route available, dropped") if isdbg('chanerr');
1587         }
1588 }
1589
1590 #
1591 # obtain the hops from the list for this callsign and pc no
1592 #
1593
1594 sub get_hops
1595 {
1596         my $pcno = shift;
1597         my $hops = $DXProt::hopcount{$pcno};
1598         $hops = $DXProt::def_hopcount if !$hops;
1599         return "H$hops";
1600 }
1601
1602 #
1603 # adjust the hop count on a per node basis using the user loadable
1604 # hop table if available or else decrement an existing one
1605 #
1606
1607 sub adjust_hops
1608 {
1609         my $self = shift;
1610         my $s = shift;
1611         my $call = $self->{call};
1612         my $hops;
1613
1614         if (($hops) = $s =~ /\^H(\d+)\^~?$/o) {
1615                 my ($pcno) = $s =~ /^PC(\d\d)/o;
1616                 confess "$call called adjust_hops with '$s'" unless $pcno;
1617                 my $ref = $nodehops{$call} if %nodehops;
1618                 if ($ref) {
1619                         my $newhops = $ref->{$pcno};
1620                         return "" if defined $newhops && $newhops == 0;
1621                         $newhops = $ref->{default} unless $newhops;
1622                         return "" if defined $newhops && $newhops == 0;
1623                         $newhops = $hops if !$newhops;
1624                         $s =~ s/\^H(\d+)(\^~?)$/\^H$newhops$2/ if $newhops;
1625                 } else {
1626                         # simply decrement it
1627                         $hops--;
1628                         return "" if !$hops;
1629                         $s =~ s/\^H(\d+)(\^~?)$/\^H$hops$2/ if $hops;
1630                 }
1631         }
1632         return $s;
1633 }
1634
1635 #
1636 # load hop tables
1637 #
1638 sub load_hops
1639 {
1640         my $self = shift;
1641         return $self->msg('lh1') unless -e "$main::data/hop_table.pl";
1642         do "$main::data/hop_table.pl";
1643         return $@ if $@;
1644         return 0;
1645 }
1646
1647
1648 # add a ping request to the ping queues
1649 sub addping
1650 {
1651         my ($from, $to) = @_;
1652         my $ref = $pings{$to} || [];
1653         my $r = {};
1654         $r->{call} = $from;
1655         $r->{t} = [ gettimeofday ];
1656         route(undef, $to, pc51($to, $main::mycall, 1));
1657         push @$ref, $r;
1658         $pings{$to} = $ref;
1659 }
1660
1661 sub process_rcmd
1662 {
1663         my ($self, $tonode, $fromnode, $user, $cmd) = @_;
1664         if ($tonode eq $main::mycall) {
1665                 my $ref = DXUser->get_current($fromnode);
1666                 my $cref = Route::Node::get($fromnode);
1667                 Log('rcmd', 'in', $ref->{priv}, $fromnode, $cmd);
1668                 if ($cmd !~ /^\s*rcmd/i && $cref && $ref && $cref->call eq $ref->homenode) { # not allowed to relay RCMDS!
1669                         if ($ref->{priv}) {             # you have to have SOME privilege, the commands have further filtering
1670                                 $self->{remotecmd} = 1; # for the benefit of any command that needs to know
1671                                 my $oldpriv = $self->{priv};
1672                                 $self->{priv} = $ref->{priv}; # assume the user's privilege level
1673                                 my @in = (DXCommandmode::run_cmd($self, $cmd));
1674                                 $self->{priv} = $oldpriv;
1675                                 $self->send_rcmd_reply($main::mycall, $fromnode, $user, @in);
1676                                 delete $self->{remotecmd};
1677                         } else {
1678                                 $self->send_rcmd_reply($main::mycall, $fromnode, $user, "sorry...!");
1679                         }
1680                 } else {
1681                         $self->send_rcmd_reply($main::mycall, $fromnode, $user, "your attempt is logged, Tut tut tut...!");
1682                 }
1683         } else {
1684                 my $ref = DXUser->get_current($tonode);
1685                 if ($ref && $ref->is_clx) {
1686                         $self->route($tonode, pc84($fromnode, $tonode, $user, $cmd));
1687                 } else {
1688                         $self->route($tonode, pc34($fromnode, $tonode, $cmd));
1689                 }
1690         }
1691 }
1692
1693 sub process_rcmd_reply
1694 {
1695         my ($self, $tonode, $fromnode, $user, $line) = @_;
1696         if ($tonode eq $main::mycall) {
1697                 my $s = $rcmds{$fromnode};
1698                 if ($s) {
1699                         my $dxchan = DXChannel->get($s->{call});
1700                         my $ref = $user eq $tonode ? $dxchan : (DXChannel->get($user) || $dxchan);
1701                         $ref->send($line) if $ref;
1702                         delete $rcmds{$fromnode} if !$dxchan;
1703                 } else {
1704                         # send unsolicited ones to the sysop
1705                         my $dxchan = DXChannel->get($main::myalias);
1706                         $dxchan->send($line) if $dxchan;
1707                 }
1708         } else {
1709                 my $ref = DXUser->get_current($tonode);
1710                 if ($ref && $ref->is_clx) {
1711                         $self->route($tonode, pc85($fromnode, $tonode, $user, $line));
1712                 } else {
1713                         $self->route($tonode, pc35($fromnode, $tonode, $line));
1714                 }
1715         }
1716 }
1717
1718 sub send_rcmd_reply
1719 {
1720         my $self = shift;
1721         my $tonode = shift;
1722         my $fromnode = shift;
1723         my $user = shift;
1724         while (@_) {
1725                 my $line = shift;
1726                 $line =~ s/\s*$//;
1727                 Log('rcmd', 'out', $fromnode, $line);
1728                 if ($self->is_clx) {
1729                         $self->send(pc85($main::mycall, $fromnode, $user, "$main::mycall:$line"));
1730                 } else {
1731                         $self->send(pc35($main::mycall, $fromnode, "$main::mycall:$line"));
1732                 }
1733         }
1734 }
1735
1736 # add a rcmd request to the rcmd queues
1737 sub addrcmd
1738 {
1739         my ($self, $to, $cmd) = @_;
1740
1741         my $r = {};
1742         $r->{call} = $self->{call};
1743         $r->{t} = $main::systime;
1744         $r->{cmd} = $cmd;
1745         $rcmds{$to} = $r;
1746
1747         my $ref = Route::Node::get($to);
1748         my $dxchan = $ref->dxchan;
1749         if ($dxchan && $dxchan->is_clx) {
1750                 route(undef, $to, pc84($main::mycall, $to, $self->{call}, $cmd));
1751         } else {
1752                 route(undef, $to, pc34($main::mycall, $to, $cmd));
1753         }
1754 }
1755
1756 sub disconnect
1757 {
1758         my $self = shift;
1759         my $pc39flag = shift;
1760         my $call = $self->call;
1761
1762         return if $self->{disconnecting}++;
1763
1764         unless ($pc39flag && $pc39flag == 1) {
1765                 $self->send_now("D", DXProt::pc39($main::mycall, $self->msg('disc1', "System Op")));
1766         }
1767
1768         # get rid of any PC16 and 19s
1769         eph_del_regex("^PC16\\^$call");
1770         eph_del_regex("^PC19\\^.*$call");
1771
1772         # do routing stuff
1773         my $node = Route::Node::get($call);
1774         my @rout;
1775         if ($node) {
1776                 @rout = $node->del($main::routeroot);
1777         }
1778
1779         # unbusy and stop and outgoing mail
1780         my $mref = DXMsg::get_busy($call);
1781         $mref->stop_msg($call) if $mref;
1782
1783         # broadcast to all other nodes that all the nodes connected to via me are gone
1784         unless ($pc39flag && $pc39flag == 2) {
1785                 $self->route_pc21(@rout) if @rout;
1786         }
1787
1788         # remove outstanding pings
1789         delete $pings{$call};
1790
1791         # I was the last node visited
1792     $self->user->node($main::mycall);
1793
1794         # send info to all logged in thingies
1795         $self->tell_login('logoutn');
1796
1797         Log('DXProt', $call . " Disconnected");
1798
1799         $self->SUPER::disconnect;
1800 }
1801
1802
1803 #
1804 # send a talk message to this thingy
1805 #
1806 sub talk
1807 {
1808         my ($self, $from, $to, $via, $line, $origin) = @_;
1809
1810         $line =~ s/\^/\\5E/g;                   # remove any ^ characters
1811         $self->send(DXProt::pc10($from, $to, $via, $line, $origin));
1812         Log('talk', $to, $from, $via?$via:$self->call, $line) unless $origin && $origin ne $main::mycall;
1813 }
1814
1815 # send it if it isn't the except list and isn't isolated and still has a hop count
1816 # taking into account filtering and so on
1817 sub send_route
1818 {
1819         my $self = shift;
1820         my $generate = shift;
1821         my $no = shift;     # the no of things to filter on
1822         my $routeit;
1823         my ($filter, $hops);
1824         my @rin;
1825
1826         for (; @_ && $no; $no--) {
1827                 my $r = shift;
1828
1829                 if (!$self->{isolate} && $self->{routefilter}) {
1830                         $filter = undef;
1831                         if ($r) {
1832                                 ($filter, $hops) = $self->{routefilter}->it($self->{call}, $self->{dxcc}, $self->{itu}, $self->{cq}, $r->call, $r->dxcc, $r->itu, $r->cq);
1833                                 if ($filter) {
1834                                         push @rin, $r;
1835                                 } else {
1836                                         dbg("DXPROT: $self->{call}/" . $r->call . " rejected by output filter") if isdbg('chanerr');
1837                                 }
1838                         } else {
1839                                 dbg("was sent a null value") if isdbg('chanerr');
1840                         }
1841                 } else {
1842                         push @rin, $r unless $self->{isolate} && $r->call ne $main::mycall;
1843                 }
1844         }
1845         if (@rin) {
1846                 foreach my $line (&$generate(@rin, @_)) {
1847                         if ($hops) {
1848                                 $routeit = $line;
1849                                 $routeit =~ s/\^H\d+\^\~$/\^H$hops\^\~/;
1850                         } else {
1851                                 $routeit = adjust_hops($self, $line);  # adjust its hop count by node name
1852                                 next unless $routeit;
1853                         }
1854                         $self->send($routeit);
1855                 }
1856         }
1857 }
1858
1859 sub broadcast_route
1860 {
1861         my $self = shift;
1862         my $generate = shift;
1863         my @dxchan = DXChannel::get_all_nodes();
1864         my $dxchan;
1865         my $line;
1866
1867         unless ($self->{isolate}) {
1868                 foreach $dxchan (@dxchan) {
1869                         next if $dxchan == $self;
1870                         next if $dxchan == $main::me;
1871                         $dxchan->send_route($generate, @_);
1872                 }
1873         }
1874 }
1875
1876 sub route_pc16
1877 {
1878         my $self = shift;
1879         broadcast_route($self, \&pc16, 1, @_);
1880 }
1881
1882 sub route_pc17
1883 {
1884         my $self = shift;
1885         broadcast_route($self, \&pc17, 1, @_);
1886 }
1887
1888 sub route_pc19
1889 {
1890         my $self = shift;
1891         broadcast_route($self, \&pc19, scalar @_, @_);
1892 }
1893
1894 sub route_pc21
1895 {
1896         my $self = shift;
1897         broadcast_route($self, \&pc21, scalar @_, @_);
1898 }
1899
1900 sub route_pc24
1901 {
1902         my $self = shift;
1903         broadcast_route($self, \&pc24, 1, @_);
1904 }
1905
1906 sub route_pc41
1907 {
1908         my $self = shift;
1909         broadcast_route($self, \&pc41, 1, @_);
1910 }
1911
1912 sub route_pc50
1913 {
1914         my $self = shift;
1915         broadcast_route($self, \&pc50, 1, @_);
1916 }
1917
1918 sub in_filter_route
1919 {
1920         my $self = shift;
1921         my $r = shift;
1922         my ($filter, $hops) = (1, 1);
1923
1924         if ($self->{inroutefilter}) {
1925                 ($filter, $hops) = $self->{inroutefilter}->it($self->{call}, $self->{dxcc}, $self->{itu}, $self->{cq}, $r->call, $r->dxcc, $r->itu, $r->cq);
1926                 dbg("PCPROT: $self->{call}/" . $r->call . ' rejected by in_filter_route') if !$filter && isdbg('chanerr');
1927         }
1928         return $filter;
1929 }
1930
1931 sub eph_dup
1932 {
1933         my $s = shift;
1934         my $t = shift || $eph_restime;
1935         my $r;
1936
1937         # chop the end off
1938         $s =~ s/\^H\d\d?\^?\~?$//;
1939         $r = 1 if exists $eph{$s};    # pump up the dup if it keeps circulating
1940         $eph{$s} = $main::systime + $t;
1941         return $r;
1942 }
1943
1944 sub eph_del_regex
1945 {
1946         my $regex = shift;
1947         my ($key, $val);
1948         while (($key, $val) = each %eph) {
1949                 if ($key =~ m{$regex}) {
1950                         delete $eph{$key};
1951                 }
1952         }
1953 }
1954
1955 sub eph_clean
1956 {
1957         my ($key, $val);
1958
1959         while (($key, $val) = each %eph) {
1960                 if ($main::systime >= $val) {
1961                         delete $eph{$key};
1962                 }
1963         }
1964 }
1965
1966 sub eph_list
1967 {
1968         my ($key, $val);
1969         my @out;
1970
1971         while (($key, $val) = each %eph) {
1972                 push @out, $key, $val;
1973         }
1974         return @out;
1975 }
1976
1977 sub run_cmd
1978 {
1979         goto &DXCommandmode::run_cmd;
1980 }
1981 1;
1982 __END__