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 DXCluster;
  19 use DXProtVars;
  20 use DXCommandmode;
  21 use DXLog;
  22 use Spot;
  23 use DXProtout;
  24 use DXDebug;
  25 use Filter;
  26 use Local;
  27 use DXDb;
  28 use AnnTalk;
  29 use Geomag;
  30 use WCY;
  31 use Time::HiRes qw(gettimeofday tv_interval);
  32
  33 use strict;
  34 use vars qw($me $pc11_max_age $pc23_max_age
  35                         $last_hour %pings %rcmds
  36                         %nodehops @baddx $baddxfn
  37                         $allowzero $decode_dk0wcy);
  38
  39 $me = undef;                                    # the channel id for this cluster
  40 $pc11_max_age = 1*3600;                 # the maximum age for an incoming 'real-time' pc11
  41 $pc23_max_age = 1*3600;                 # the maximum age for an incoming 'real-time' pc23
  42
  43 $last_hour = time;                              # last time I did an hourly periodic update
  44 %pings = ();                    # outstanding ping requests outbound
  45 %rcmds = ();                    # outstanding rcmd requests outbound
  46 %nodehops = ();                 # node specific hop control
  47 @baddx = ();                    # list of illegal spotted callsigns
  48
  49
  50 $baddxfn = "$main::data/baddx.pl";
  51
  52 sub init
  53 {
  54         my $user = DXUser->get($main::mycall);
  55         $DXProt::myprot_version += $main::version*100;
  56         $me = DXProt->new($main::mycall, 0, $user);
  57         $me->{here} = 1;
  58         $me->{state} = "indifferent";
  59         do "$main::data/hop_table.pl" if -e "$main::data/hop_table.pl";
  60         confess $@ if $@;
  61         #  $me->{sort} = 'M';    # M for me
  62
  63         # now prime the spot and wwv  duplicates file with data
  64     my @today = Julian::unixtoj(time);
  65         for (Spot::readfile(@today), Spot::readfile(Julian::sub(@today, 1))) {
  66                 Spot::dup(@{$_}[0..3]);
  67         }
  68         for (Geomag::readfile(time)) {
  69                 Geomag::dup(@{$_}[1..5]);
  70         }
  71
  72         # load the baddx file
  73         do "$baddxfn" if -e "$baddxfn";
  74         print "$@\n" if $@;
  75 }
  76
  77 #
  78 # obtain a new connection this is derived from dxchannel
  79 #
  80
  81 sub new
  82 {
  83         my $self = DXChannel::alloc(@_);
  84         return $self;
  85 }
  86
  87 # this is how a pc connection starts (for an incoming connection)
  88 # issue a PC38 followed by a PC18, then wait for a PC20 (remembering
  89 # all the crap that comes between).
  90 sub start
  91 {
  92         my ($self, $line, $sort) = @_;
  93         my $call = $self->{call};
  94         my $user = $self->{user};
  95
  96         # remember type of connection
  97         $self->{consort} = $line;
  98         $self->{outbound} = $sort eq 'O';
  99         $self->{priv} = $user->priv;
 100         $self->{lang} = $user->lang;
 101         $self->{isolate} = $user->{isolate};
 102         $self->{consort} = $line;       # save the connection type
 103         $self->{here} = 1;
 104
 105         # get the INPUT filters (these only pertain to Clusters)
 106         $self->{inspotfilter} = Filter::read_in('spots', $call, 1);
 107         $self->{inwwvfilter} = Filter::read_in('wwv', $call, 1);
 108         $self->{inwcyfilter} = Filter::read_in('wcy', $call, 1);
 109         $self->{inannfilter} = Filter::read_in('ann', $call, 1);
 110
 111         # set unbuffered and no echo
 112         $self->send_now('B',"0");
 113         $self->send_now('E',"0");
 114
 115         # ping neighbour node stuff
 116         my $ping = $user->pingint;
 117         $ping = 5*60 unless defined $ping;
 118         $self->{pingint} = $ping;
 119         $self->{nopings} = $user->nopings || 2;
 120         $self->{pingtime} = [ ];
 121         $self->{pingave} = 0;
 122
 123         # send initialisation string
 124         unless ($self->{outbound}) {
 125                 $self->send(pc38()) if DXNode->get_all();
 126                 $self->send(pc18());
 127                 $self->{lastping} = $main::systime;
 128         } else {
 129                 # remove from outstanding connects queue
 130                 @main::outstanding_connects = grep {$_->{call} ne $call} @main::outstanding_connects;
 131                 $self->{lastping} = $main::systime + $self->pingint / 2;
 132         }
 133         $self->state('init');
 134         $self->pc50_t(time);
 135
 136         # send info to all logged in thingies
 137         $self->tell_login('loginn');
 138
 139         Log('DXProt', "$call connected");
 140 }
 141
 142 #
 143 # This is the normal pcxx despatcher
 144 #
 145 sub normal
 146 {
 147         my ($self, $line) = @_;
 148         my @field = split /\^/, $line;
 149         pop @field if $field[-1] eq '~';
 150
 151 #       print join(',', @field), "\n";
 152
 153         # ignore any lines that don't start with PC
 154         return if !$field[0] =~ /^PC/;
 155
 156         # process PC frames
 157         my ($pcno) = $field[0] =~ /^PC(\d\d)/; # just get the number
 158         return unless $pcno;
 159         return if $pcno < 10 || $pcno > 99;
 160
 161         # dump bad protocol messages unless it is a PC29
 162         if ($line =~ /\%[0-9A-F][0-9A-F]/o && $pcno != 29) {
 163                 dbg('chan', "CORRUPT protocol message - dumped");
 164                 return;
 165         }
 166
 167         # local processing 1
 168         my $pcr;
 169         eval {
 170                 $pcr = Local::pcprot($self, $pcno, @field);
 171         };
 172 #       dbg('local', "Local::pcprot error $@") if $@;
 173         return if $pcr;
 174
 175  SWITCH: {
 176                 if ($pcno == 10) {              # incoming talk
 177
 178                         # is it for me or one of mine?
 179                         my $call = ($field[5] gt ' ') ? $field[5] : $field[2];
 180                         if ($call eq $main::mycall || grep $_ eq $call, DXChannel::get_all_user_calls()) {
 181
 182                                 # yes, it is
 183                                 my $text = unpad($field[3]);
 184                                 Log('talk', $call, $field[1], $field[6], $text);
 185                                 $call = $main::myalias if $call eq $main::mycall;
 186                                 my $ref = DXChannel->get($call);
 187                                 $ref->send("$call de $field[1]: $text") if $ref && $ref->{talk};
 188                         } else {
 189                                 $self->route($field[2], $line); # relay it on its way
 190                         }
 191                         return;
 192                 }
 193
 194                 if ($pcno == 11 || $pcno == 26) { # dx spot
 195
 196                         # route 'foreign' pc26s
 197                         if ($pcno == 26) {
 198                                 if ($field[7] ne $main::mycall) {
 199                                         $self->route($field[7], $line);
 200                                         return;
 201                                 }
 202                         }
 203
 204                         # if this is a 'nodx' node then ignore it
 205                         if (grep $field[7] =~ /^$_/,  @DXProt::nodx_node) {
 206                                 dbg('chan', "Bad DXNode, dropped");
 207                                 return;
 208                         }
 209
 210                         # convert the date to a unix date
 211                         my $d = cltounix($field[3], $field[4]);
 212                         # bang out (and don't pass on) if date is invalid or the spot is too old (or too young)
 213                         if (!$d || ($pcno == 11 && ($d < $main::systime - $pc11_max_age || $d > $main::systime + 900))) {
 214                                 dbg('chan', "Spot ignored, invalid date or out of range ($field[3] $field[4])\n");
 215                                 return;
 216                         }
 217
 218                         # is it 'baddx'
 219                         if (grep $field[2] eq $_, @baddx) {
 220                                 dbg('chan', "Bad DX spot, ignored");
 221                                 return;
 222                         }
 223
 224                         # are any of the crucial fields invalid?
 225             if ($field[2] =~ /[a-z]/ || $field[6] =~ /[a-z]/ || $field[7] =~ /[a-z]/) {
 226                                 dbg('chan', "Spot contains lower case callsigns, rejected");
 227                                 return;
 228                         }
 229
 230                         # do some de-duping
 231                         if (Spot::dup($field[1], $field[2], $d, $field[5])) {
 232                                 dbg('chan', "Duplicate Spot ignored\n");
 233                                 return;
 234                         }
 235
 236                         my @spot = Spot::add($field[1], $field[2], $d, $field[5], $field[6], $field[7]);
 237
 238             #
 239                         # @spot at this point contains:-
 240             # freq, spotted call, time, text, spotter, spotted cc, spotters cc, orig node
 241                         # then  spotted itu, spotted cq, spotters itu, spotters cq
 242                         # you should be able to route on any of these
 243             #
 244
 245                         # local processing
 246                         my $r;
 247                         eval {
 248                                 $r = Local::spot($self, @spot);
 249                         };
 250 #                       dbg('local', "Local::spot1 error $@") if $@;
 251                         return if $r;
 252
 253                         # DON'T be silly and send on PC26s!
 254                         return if $pcno == 26;
 255
 256                         # send out the filtered spots
 257                         send_dx_spot($self, $line, @spot) if @spot;
 258                         return;
 259                 }
 260
 261                 if ($pcno == 12) {              # announces
 262                         # announce duplicate checking
 263                         if (AnnTalk::dup($field[1], $field[2], $field[3])) {
 264                                 dbg('chan', "Duplicate Announce ignored\n");
 265                                 return;
 266                         }
 267
 268                         if ($field[2] eq '*' || $field[2] eq $main::mycall) {
 269
 270                                 # global ann filtering on INPUT
 271                                 if ($self->{inannfilter}) {
 272                                         my ($filter, $hops) = Filter::it($self->{inannfilter}, @field[1..6], $self->{call} );
 273                                         unless ($filter) {
 274                                                 dbg('chan', "Rejected by filter");
 275                                                 return;
 276                                         }
 277                                 }
 278
 279                                 # send it
 280                                 $self->send_announce($line, @field[1..6]);
 281                         } else {
 282                                 $self->route($field[2], $line);
 283                         }
 284
 285                         return;
 286                 }
 287
 288                 if ($pcno == 13) {
 289                         last SWITCH;
 290                 }
 291                 if ($pcno == 14) {
 292                         last SWITCH;
 293                 }
 294                 if ($pcno == 15) {
 295                         last SWITCH;
 296                 }
 297
 298                 if ($pcno == 16) {              # add a user
 299                         my $node = DXCluster->get_exact($field[1]);
 300                         my $dxchan;
 301                         if (!$node && ($dxchan = DXChannel->get($field[1]))) {
 302                                 # add it to the node table if it isn't present and it's
 303                                 # connected locally
 304                                 $node = DXNode->new($dxchan, $field[1], 0, 1, 5400);
 305                                 broadcast_ak1a(pc19($dxchan, $node), $dxchan, $self) unless $dxchan->{isolate};
 306
 307                         }
 308                         return unless $node; # ignore if havn't seen a PC19 for this one yet
 309                         return unless $node->isa('DXNode');
 310                         if ($node->dxchan != $self) {
 311                                 dbg('chan', "LOOP: $field[1] came in on wrong channel");
 312                                 return;
 313                         }
 314                         if (($dxchan = DXChannel->get($field[1])) && $dxchan != $self) {
 315                                 dbg('chan', "LOOP: $field[1] connected locally");
 316                                 return;
 317                         }
 318                         my $i;
 319
 320                         for ($i = 2; $i < $#field; $i++) {
 321                                 my ($call, $confmode, $here) = $field[$i] =~ /^(\S+) (\S) (\d)/o;
 322                                 next if !$call || length $call < 3 || length $call > 8;
 323                                 next if !$confmode;
 324                                 $call = uc $call;
 325                                 next if DXCluster->get_exact($call); # we already have this (loop?)
 326
 327                                 $confmode = $confmode eq '*';
 328                                 DXNodeuser->new($self, $node, $call, $confmode, $here);
 329
 330                                 # add this station to the user database, if required
 331                                 $call =~ s/-\d+$//o;        # remove ssid for users
 332                                 my $user = DXUser->get_current($call);
 333                                 $user = DXUser->new($call) if !$user;
 334                                 $user->homenode($node->call) if !$user->homenode;
 335                                 $user->node($node->call);
 336                                 $user->lastin($main::systime) unless DXChannel->get($call);
 337                                 $user->put;
 338                         }
 339
 340                         # queue up any messages (look for privates only)
 341                         DXMsg::queue_msg(1) if $self->state eq 'normal';
 342                         last SWITCH;
 343                 }
 344
 345                 if ($pcno == 17) {              # remove a user
 346                         my $node = DXCluster->get_exact($field[2]);
 347                         my $dxchan;
 348                         if (!$node && ($dxchan = DXChannel->get($field[2]))) {
 349                                 # add it to the node table if it isn't present and it's
 350                                 # connected locally
 351                                 $node = DXNode->new($dxchan, $field[2], 0, 1, 5400);
 352                                 broadcast_ak1a(pc19($dxchan, $node), $dxchan, $self) unless $dxchan->{isolate};
 353                                 return;
 354                         }
 355                         return unless $node;
 356                         return unless $node->isa('DXNode');
 357                         if ($node->dxchan != $self) {
 358                                 dbg('chan', "LOOP: $field[2] came in on wrong channel");
 359                                 return;
 360                         }
 361                         if (($dxchan = DXChannel->get($field[2])) && $dxchan != $self) {
 362                                 dbg('chan', "LOOP: $field[2] connected locally");
 363                                 return;
 364                         }
 365                         my $ref = DXCluster->get_exact($field[1]);
 366                         $ref->del() if $ref;
 367                         last SWITCH;
 368                 }
 369
 370                 if ($pcno == 18) {              # link request
 371                         $self->state('init');
 372
 373                         # first clear out any nodes on this dxchannel
 374                         my @gonenodes = map { $_->dxchan == $self ? $_ : () } DXNode::get_all();
 375                         foreach my $node (@gonenodes) {
 376                                 next if $node->dxchan == $DXProt::me;
 377                                 broadcast_ak1a(pc21($node->call, 'Gone, re-init') , $self) unless $self->{isolate};
 378                                 $node->del();
 379                         }
 380                         $self->send_local_config();
 381                         $self->send(pc20());
 382                         return;             # we don't pass these on
 383                 }
 384
 385                 if ($pcno == 19) {              # incoming cluster list
 386                         my $i;
 387                         my $newline = "PC19^";
 388                         for ($i = 1; $i < $#field-1; $i += 4) {
 389                                 my $here = $field[$i];
 390                                 my $call = uc $field[$i+1];
 391                                 my $confmode = $field[$i+2];
 392                                 my $ver = $field[$i+3];
 393
 394                                 $ver = 5400 if !$ver && $allowzero;
 395
 396                                 # now check the call over
 397                                 my $node = DXCluster->get_exact($call);
 398                                 if ($node) {
 399                                         my $dxchan;
 400                                         if (($dxchan = DXChannel->get($call)) && $dxchan != $self) {
 401                                                 dbg('chan', "LOOP: $call connected locally");
 402                                         }
 403                                     if ($node->dxchan != $self) {
 404                                                 dbg('chan', "LOOP: $call come in on wrong channel");
 405                                                 next;
 406                                         }
 407                                         dbg('chan', "already have $call");
 408                                         next;
 409                                 }
 410
 411                                 # check for sane parameters
 412                                 next if $ver < 5000; # only works with version 5 software
 413                                 next if length $call < 3; # min 3 letter callsigns
 414
 415                                 # add it to the nodes table and outgoing line
 416                                 $newline .= "$here^$call^$confmode^$ver^";
 417                                 DXNode->new($self, $call, $confmode, $here, $ver);
 418
 419                                 # unbusy and stop and outgoing mail (ie if somehow we receive another PC19 without a disconnect)
 420                                 my $mref = DXMsg::get_busy($call);
 421                                 $mref->stop_msg($call) if $mref;
 422
 423                                 # add this station to the user database, if required (don't remove SSID from nodes)
 424                                 my $user = DXUser->get_current($call);
 425                                 if (!$user) {
 426                                         $user = DXUser->new($call);
 427                                         $user->sort('A');
 428                                         $user->priv(1);                   # I have relented and defaulted nodes
 429                                         $self->{priv} = 1;                # to user RCMDs allowed
 430                                         $user->homenode($call);
 431                                         $user->node($call);
 432                                 }
 433                                 $user->lastin($main::systime) unless DXChannel->get($call);
 434                                 $user->put;
 435                         }
 436
 437                         return if $newline eq "PC19^";
 438
 439                         # add hop count
 440                         $newline .=  get_hops(19) . "^";
 441                         $line = $newline;
 442                         last SWITCH;
 443                 }
 444
 445                 if ($pcno == 20) {              # send local configuration
 446                         $self->send_local_config();
 447                         $self->send(pc22());
 448                         $self->state('normal');
 449                         return;
 450                 }
 451
 452                 if ($pcno == 21) {              # delete a cluster from the list
 453                         my $call = uc $field[1];
 454                         if ($call ne $main::mycall) { # don't allow malicious buggers to disconnect me!
 455                                 my $node = DXCluster->get_exact($call);
 456                                 if ($node) {
 457                                         if ($node->dxchan != $self) {
 458                                                 dbg('chan', "LOOP: $call come in on wrong channel");
 459                                                 return;
 460                                         }
 461                                         my $dxchan;
 462                                         if (($dxchan = DXChannel->get($call)) && $dxchan != $self) {
 463                                                 dbg('chan', "LOOP: $call connected locally");
 464                                                 return;
 465                                         }
 466                                         $node->del();
 467                                 } else {
 468                                         dbg('chan', "$call not in table, dropped");
 469                                         return;
 470                                 }
 471                         }
 472                         last SWITCH;
 473                 }
 474
 475                 if ($pcno == 22) {
 476                         $self->state('normal');
 477                         return;
 478                 }
 479
 480                 if ($pcno == 23 || $pcno == 27) { # WWV info
 481
 482                         # route 'foreign' pc27s
 483                         if ($pcno == 27) {
 484                                 if ($field[8] ne $main::mycall) {
 485                                         $self->route($field[8], $line);
 486                                         return;
 487                                 }
 488                         }
 489
 490                         # do some de-duping
 491                         my $d = cltounix($field[1], sprintf("%02d18Z", $field[2]));
 492                         my $sfi = unpad($field[3]);
 493                         my $k = unpad($field[4]);
 494                         my $i = unpad($field[5]);
 495                         my ($r) = $field[6] =~ /R=(\d+)/;
 496                         $r = 0 unless $r;
 497                         if (($pcno == 23 && $d < $main::systime - $pc23_max_age) || $d > $main::systime + 1500 || $field[2] < 0 || $field[2] > 23) {
 498                                 dbg('chan', "WWV Date ($field[1] $field[2]) out of range");
 499                                 return;
 500                         }
 501                         if (Geomag::dup($d,$sfi,$k,$i,$field[6])) {
 502                                 dbg('chan', "Dup WWV Spot ignored\n");
 503                                 return;
 504                         }
 505                         $field[7] =~ s/-\d+$//o;            # remove spotter's ssid
 506
 507                         my $wwv = Geomag::update($d, $field[2], $sfi, $k, $i, @field[6..8], $r);
 508
 509                         my $rep;
 510                         eval {
 511                                 $rep = Local::wwv($self, $field[1], $field[2], $sfi, $k, $i, @field[6..8], $r);
 512                         };
 513 #                       dbg('local', "Local::wwv2 error $@") if $@;
 514                         return if $rep;
 515
 516                         # DON'T be silly and send on PC27s!
 517                         return if $pcno == 27;
 518
 519                         # broadcast to the eager world
 520                         send_wwv_spot($self, $line, $d, $field[2], $sfi, $k, $i, @field[6..8]);
 521                         return;
 522                 }
 523
 524                 if ($pcno == 24) {              # set here status
 525                         my $call = uc $field[1];
 526                         my $ref = DXCluster->get_exact($call);
 527                         $ref->here($field[2]) if $ref;
 528                         last SWITCH;
 529                 }
 530
 531                 if ($pcno == 25) {      # merge request
 532                         if ($field[1] ne $main::mycall) {
 533                                 $self->route($field[1], $line);
 534                                 return;
 535                         }
 536                         if ($field[2] eq $main::mycall) {
 537                                 dbg('chan', "Trying to merge to myself, ignored");
 538                                 return;
 539                         }
 540
 541                         Log('DXProt', "Merge request for $field[3] spots and $field[4] WWV from $field[1]");
 542
 543                         # spots
 544                         if ($field[3] > 0) {
 545                                 my @in = reverse Spot::search(1, undef, undef, 0, $field[3]);
 546                                 my $in;
 547                                 foreach $in (@in) {
 548                                         $self->send(pc26(@{$in}[0..4], $field[2]));
 549                                 }
 550                         }
 551
 552                         # wwv
 553                         if ($field[4] > 0) {
 554                                 my @in = reverse Geomag::search(0, $field[4], time, 1);
 555                                 my $in;
 556                                 foreach $in (@in) {
 557                                         $self->send(pc27(@{$in}[0..5], $field[2]));
 558                                 }
 559                         }
 560                         return;
 561                 }
 562
 563                 if (($pcno >= 28 && $pcno <= 33) || $pcno == 40 || $pcno == 42 || $pcno == 49) { # mail/file handling
 564                         if ($pcno == 49 || $field[1] eq $main::mycall) {
 565                                 DXMsg::process($self, $line);
 566                         } else {
 567                                 $self->route($field[1], $line);
 568                         }
 569                         return;
 570                 }
 571
 572                 if ($pcno == 34 || $pcno == 36) { # remote commands (incoming)
 573                         if ($field[1] eq $main::mycall) {
 574                                 my $ref = DXUser->get_current($field[2]);
 575                                 my $cref = DXCluster->get($field[2]);
 576                                 Log('rcmd', 'in', $ref->{priv}, $field[2], $field[3]);
 577                                 unless ($field[3] =~ /rcmd/i || !$cref || !$ref || $cref->mynode->call ne $ref->homenode) {    # not allowed to relay RCMDS!
 578                                         if ($ref->{priv}) {     # you have to have SOME privilege, the commands have further filtering
 579                                                 $self->{remotecmd} = 1; # for the benefit of any command that needs to know
 580                                                 my $oldpriv = $self->{priv};
 581                                                 $self->{priv} = $ref->{priv};     # assume the user's privilege level
 582                                                 my @in = (DXCommandmode::run_cmd($self, $field[3]));
 583                                                 $self->{priv} = $oldpriv;
 584                                                 for (@in) {
 585                                                         s/\s*$//og;
 586                                                         $self->send(pc35($main::mycall, $field[2], "$main::mycall:$_"));
 587                                                         Log('rcmd', 'out', $field[2], $_);
 588                                                 }
 589                                                 delete $self->{remotecmd};
 590                                         } else {
 591                                                 $self->send(pc35($main::mycall, $field[2], "$main::mycall:sorry...!"));
 592                                         }
 593                                 } else {
 594                                         $self->send(pc35($main::mycall, $field[2], "$main::mycall:your attempt is logged, Tut tut tut...!"));
 595                                 }
 596                         } else {
 597                                 my $ref = DXUser->get_current($field[1]);
 598                                 if ($ref && $ref->is_clx) {
 599                                         route($field[1], pc84($field[2], $field[1], $field[2], $field[3]));
 600                                 } else {
 601                                         $self->route($field[1], $line);
 602                                 }
 603                         }
 604                         return;
 605                 }
 606
 607                 if ($pcno == 35) {              # remote command replies
 608                         if ($field[1] eq $main::mycall) {
 609                                 my $s = $rcmds{$field[2]};
 610                                 if ($s) {
 611                                         my $dxchan = DXChannel->get($s->{call});
 612                                         $dxchan->send($field[3]) if $dxchan;
 613                                         delete $rcmds{$field[2]} if !$dxchan;
 614                                 }
 615                         } else {
 616                                 my $ref = DXUser->get_current($field[1]);
 617                                 if ($ref && $ref->is_clx) {
 618                                         route($field[1], pc85($field[2], $field[1], $field[2], $field[3]));
 619                                 } else {
 620                                         $self->route($field[1], $line);
 621                                 }
 622                         }
 623                         return;
 624                 }
 625
 626                 # for pc 37 see 44 onwards
 627
 628                 if ($pcno == 38) {              # node connected list from neighbour
 629                         return;
 630                 }
 631
 632                 if ($pcno == 39) {              # incoming disconnect
 633                         $self->disconnect(1);
 634                         return;
 635                 }
 636
 637                 if ($pcno == 41) {              # user info
 638                         # add this station to the user database, if required
 639                         my $user = DXUser->get_current($field[1]);
 640                         if (!$user) {
 641                                 # then try without an SSID
 642                                 $field[1] =~ s/-\d+$//o;
 643                                 $user = DXUser->get_current($field[1]);
 644                         }
 645                         $user = DXUser->new($field[1]) if !$user;
 646
 647                         if ($field[2] == 1) {
 648                                 $user->name($field[3]);
 649                         } elsif ($field[2] == 2) {
 650                                 $user->qth($field[3]);
 651                         } elsif ($field[2] == 3) {
 652                                 my ($lat, $long) = DXBearing::stoll($field[3]);
 653                                 $user->lat($lat);
 654                                 $user->long($long);
 655                         } elsif ($field[2] == 4) {
 656                                 $user->homenode($field[3]);
 657                         }
 658                         $user->put;
 659                         last SWITCH;
 660                 }
 661                 if ($pcno == 43) {
 662                         last SWITCH;
 663                 }
 664                 if ($pcno == 37 || $pcno == 44 || $pcno == 45 || $pcno == 46 || $pcno == 47 || $pcno == 48) {
 665                         DXDb::process($self, $line);
 666                         return;
 667                 }
 668
 669                 if ($pcno == 50) {              # keep alive/user list
 670                         my $node = DXCluster->get_exact($field[1]);
 671                         if ($node) {
 672                                 return unless $node->isa('DXNode');
 673                                 return unless $node->dxchan == $self;
 674                                 $node->update_users($field[2]);
 675                         }
 676                         last SWITCH;
 677                 }
 678
 679                 if ($pcno == 51) {              # incoming ping requests/answers
 680
 681                         # is it for us?
 682                         if ($field[1] eq $main::mycall) {
 683                                 my $flag = $field[3];
 684                                 if ($flag == 1) {
 685                                         $self->send(pc51($field[2], $field[1], '0'));
 686                                 } else {
 687                                         # it's a reply, look in the ping list for this one
 688                                         my $ref = $pings{$field[2]};
 689                                         if ($ref) {
 690                                                 my $tochan =  DXChannel->get($field[2]);
 691                                                 while (@$ref) {
 692                                                         my $r = shift @$ref;
 693                                                         my $dxchan = DXChannel->get($r->{call});
 694                                                         next unless $dxchan;
 695                                                         my $t = tv_interval($r->{t}, [ gettimeofday ]);
 696                                                         if ($dxchan->is_user) {
 697                                                                 my $s = sprintf "%.2f", $t;
 698                                                                 my $ave = sprintf "%.2f", $tochan ? ($tochan->{pingave} || $t) : $t;
 699                                                                 $dxchan->send($dxchan->msg('pingi', $field[2], $s, $ave))
 700                                                         } elsif ($dxchan->is_node) {
 701                                                                 if ($tochan) {
 702                                                                         $tochan->{nopings} = 2; # pump up the timer
 703                                                                         push @{$tochan->{pingtime}}, $t;
 704                                                                         shift @{$tochan->{pingtime}} if @{$tochan->{pingtime}} > 6;
 705                                                                         my $st;
 706                                                                         for (@{$tochan->{pingtime}}) {
 707                                                                                 $st += $_;
 708                                                                         }
 709                                                                         $tochan->{pingave} = $st / @{$tochan->{pingtime}};
 710                                                                 }
 711                                                         }
 712                                                 }
 713                                         }
 714                                 }
 715                         } else {
 716                                 # route down an appropriate thingy
 717                                 $self->route($field[1], $line);
 718                         }
 719                         return;
 720                 }
 721
 722                 if ($pcno == 73) {  # WCY broadcasts
 723
 724                         # do some de-duping
 725                         my $d = cltounix($field[1], sprintf("%02d18Z", $field[2]));
 726                         if (($pcno == 23 && $d < $main::systime - $pc23_max_age) || $d > $main::systime + 1500 || $field[2] < 0 || $field[2] > 23) {
 727                                 dbg('chan', "WCY Date ($field[1] $field[2]) out of range");
 728                                 return;
 729                         }
 730                         @field = map { unpad($_) } @field;
 731                         if (WCY::dup($d,@field[3..7])) {
 732                                 dbg('chan', "Dup WCY Spot ignored\n");
 733                                 return;
 734                         }
 735
 736                         my $wcy = WCY::update($d, @field[2..12]);
 737
 738                         my $rep;
 739                         eval {
 740                                 $rep = Local::wwv($self, @field[1..12]);
 741                         };
 742                         # dbg('local', "Local::wcy error $@") if $@;
 743                         return if $rep;
 744
 745                         # broadcast to the eager world
 746                         send_wcy_spot($self, $line, $d, @field[2..12]);
 747                         return;
 748                 }
 749
 750                 if ($pcno == 84) { # remote commands (incoming)
 751                         if ($field[1] eq $main::mycall) {
 752                                 my $ref = DXUser->get_current($field[2]);
 753                                 my $cref = DXCluster->get($field[2]);
 754                                 Log('rcmd', 'in', $ref->{priv}, $field[2], $field[4]);
 755                                 unless ($field[3] =~ /rcmd/i || !$cref || !$ref || $cref->mynode->call ne $ref->homenode) {    # not allowed to relay RCMDS!
 756                                         if ($ref->{priv}) {     # you have to have SOME privilege, the commands have further filtering
 757                                                 $self->{remotecmd} = 1; # for the benefit of any command that needs to know
 758                                                 my $oldpriv = $self->{priv};
 759                                                 $self->{priv} = $ref->{priv};     # assume the user's privilege level
 760                                                 my @in = (DXCommandmode::run_cmd($self, $field[4]));
 761                                                 $self->{priv} = $oldpriv;
 762                                                 for (@in) {
 763                                                         s/\s*$//og;
 764                                                         $self->send(pc85($main::mycall, $field[2], $field[3], "$main::mycall:$_"));
 765                                                         Log('rcmd', 'out', $field[2], $_);
 766                                                 }
 767                                                 delete $self->{remotecmd};
 768                                         } else {
 769                                                 $self->send(pc85($main::mycall, $field[2], $field[3], "$main::mycall:sorry...!"));
 770                                         }
 771                                 } else {
 772                                         $self->send(pc85($main::mycall, $field[2], $field[3],"$main::mycall:your attempt is logged, Tut tut tut...!"));
 773                                 }
 774                         } else {
 775                                 my $ref = DXUser->get_current($field[1]);
 776                                 if ($ref && $ref->is_clx) {
 777                                         $self->route($field[1], $line);
 778                                 } else {
 779                                         route($field[1], pc34($field[2], $field[1], $field[3]));
 780                                 }
 781                         }
 782                         return;
 783                 }
 784
 785                 if ($pcno == 85) {              # remote command replies
 786                         if ($field[1] eq $main::mycall) {
 787                                 my $dxchan = DXChannel->get($field[3]);
 788                                 if ($dxchan) {
 789                                         $dxchan->send($field[4]);
 790                                 } else {
 791                                         my $s = $rcmds{$field[2]};
 792                                         if ($s) {
 793                                                 $dxchan = DXChannel->get($s->{call});
 794                                                 $dxchan->send($field[4]) if $dxchan;
 795                                                 delete $rcmds{$field[2]} if !$dxchan;
 796                                         }
 797                                 }
 798                         } else {
 799                                 my $ref = DXUser->get_current($field[1]);
 800                                 if ($ref && $ref->is_clx) {
 801                                         $self->route($field[1], $line);
 802                                 } else {
 803                                         route($field[1], pc35($field[2], $field[1], $field[3]));
 804                                 }
 805                         }
 806                         return;
 807                 }
 808         }
 809
 810         # if get here then rebroadcast the thing with its Hop count decremented (if
 811         # there is one). If it has a hop count and it decrements to zero then don't
 812         # rebroadcast it.
 813         #
 814         # NOTE - don't arrive here UNLESS YOU WANT this lump of protocol to be
 815         #        REBROADCAST!!!!
 816         #
 817
 818         unless ($self->{isolate}) {
 819                 broadcast_ak1a($line, $self); # send it to everyone but me
 820         }
 821 }
 822
 823 #
 824 # This is called from inside the main cluster processing loop and is used
 825 # for despatching commands that are doing some long processing job
 826 #
 827 sub process
 828 {
 829         my $t = time;
 830         my @dxchan = DXChannel->get_all();
 831         my $dxchan;
 832
 833         foreach $dxchan (@dxchan) {
 834                 next unless $dxchan->is_node();
 835                 next if $dxchan == $me;
 836
 837                 # send a pc50 out on this channel
 838                 if ($t >= $dxchan->pc50_t + $DXProt::pc50_interval) {
 839                         $dxchan->send(pc50(scalar DXChannel::get_all_users));
 840                         $dxchan->pc50_t($t);
 841                 }
 842
 843                 # send a ping out on this channel
 844                 if ($dxchan->{pingint} && $t >= $dxchan->{pingint} + $dxchan->{lastping}) {
 845                         if ($dxchan->{nopings} <= 0) {
 846                                 $dxchan->disconnect;
 847                         } else {
 848                                 addping($main::mycall, $dxchan->call);
 849                                 $dxchan->{nopings} -= 1;
 850                                 $dxchan->{lastping} = $t;
 851                         }
 852                 }
 853         }
 854
 855         my $key;
 856         my $val;
 857         my $cutoff;
 858         if ($main::systime - 3600 > $last_hour) {
 859                 Spot::process;
 860                 Geomag::process;
 861                 AnnTalk::process;
 862                 $last_hour = $main::systime;
 863         }
 864 }
 865
 866 #
 867 # finish up a pc context
 868 #
 869 sub finish
 870 {
 871         my $self = shift;
 872         my $call = $self->call;
 873         my $conn = shift;
 874         my $ref = DXCluster->get_exact($call);
 875
 876         # unbusy and stop and outgoing mail
 877         my $mref = DXMsg::get_busy($call);
 878         $mref->stop_msg($call) if $mref;
 879
 880         # broadcast to all other nodes that all the nodes connected to via me are gone
 881         my @gonenodes = map { $_->dxchan == $self ? $_ : () } DXNode::get_all();
 882         my $node;
 883
 884         foreach $node (@gonenodes) {
 885                 next if $node->call eq $call;
 886                 broadcast_ak1a(pc21($node->call, 'Gone') , $self) unless $self->{isolate};
 887                 $node->del();
 888         }
 889
 890         # remove outstanding pings
 891         delete $pings{$call};
 892
 893         # now broadcast to all other ak1a nodes that I have gone
 894         broadcast_ak1a(pc21($call, 'Gone.'), $self) unless $self->{isolate};
 895
 896         # I was the last node visited
 897     $self->user->node($main::mycall);
 898
 899         # send info to all logged in thingies
 900         $self->tell_login('logoutn');
 901
 902         Log('DXProt', $call . " Disconnected");
 903         $ref->del() if $ref;
 904 }
 905
 906 #
 907 # some active measures
 908 #
 909 sub send_dx_spot
 910 {
 911         my $self = shift;
 912         my $line = shift;
 913         my @dxchan = DXChannel->get_all();
 914         my $dxchan;
 915
 916         # send it if it isn't the except list and isn't isolated and still has a hop count
 917         # taking into account filtering and so on
 918         foreach $dxchan (@dxchan) {
 919                 my $routeit;
 920                 my ($filter, $hops);
 921
 922                 if ($dxchan->{spotfilter}) {
 923                     ($filter, $hops) = Filter::it($dxchan->{spotfilter}, @_, $self->{call} );
 924                         next unless $filter;
 925                 }
 926
 927                 if ($dxchan->is_node) {
 928                         next if $dxchan == $self;
 929                         if ($hops) {
 930                                 $routeit = $line;
 931                                 $routeit =~ s/\^H\d+\^\~$/\^H$hops\^\~/;
 932                         } else {
 933                                 $routeit = adjust_hops($dxchan, $line);  # adjust its hop count by node name
 934                                 next unless $routeit;
 935                         }
 936                         if ($filter) {
 937                                 $dxchan->send($routeit) if $routeit;
 938                         } else {
 939                                 $dxchan->send($routeit) unless $dxchan->{isolate} || $self->{isolate};
 940                         }
 941                 } elsif ($dxchan->is_user && $dxchan->{dx}) {
 942                         my $buf = Spot::formatb($_[0], $_[1], $_[2], $_[3], $_[4]);
 943                         $buf .= "\a\a" if $dxchan->{beep};
 944                         if ($dxchan->{state} eq 'prompt' || $dxchan->{state} eq 'convers') {
 945                                 $dxchan->send($buf);
 946                         } else {
 947                                 $dxchan->delay($buf);
 948                         }
 949                 }
 950         }
 951 }
 952
 953 sub send_wwv_spot
 954 {
 955         my $self = shift;
 956         my $line = shift;
 957         my @dxchan = DXChannel->get_all();
 958         my $dxchan;
 959
 960         # send it if it isn't the except list and isn't isolated and still has a hop count
 961         # taking into account filtering and so on
 962         foreach $dxchan (@dxchan) {
 963                 my $routeit;
 964                 my ($filter, $hops);
 965
 966                 if ($dxchan->{wwvfilter}) {
 967                          ($filter, $hops) = Filter::it($dxchan->{wwvfilter}, @_, $self->{call} );
 968                          next unless $filter;
 969                 }
 970                 if ($dxchan->is_node) {
 971                         next if $dxchan == $self;
 972                         if ($hops) {
 973                                 $routeit = $line;
 974                                 $routeit =~ s/\^H\d+\^\~$/\^H$hops\^\~/;
 975                         } else {
 976                                 $routeit = adjust_hops($dxchan, $line);  # adjust its hop count by node name
 977                                 next unless $routeit;
 978                         }
 979                         if ($filter) {
 980                                 $dxchan->send($routeit) if $routeit;
 981                         } else {
 982                                 $dxchan->send($routeit) unless $dxchan->{isolate} || $self->{isolate};
 983
 984                         }
 985                 } elsif ($dxchan->is_user && $dxchan->{wwv}) {
 986                         my $buf = "WWV de $_[6] <$_[1]>:   SFI=$_[2], A=$_[3], K=$_[4], $_[5]";
 987                         $buf .= "\a\a" if $dxchan->{beep};
 988                         if ($dxchan->{state} eq 'prompt' || $dxchan->{state} eq 'convers') {
 989                                 $dxchan->send($buf);
 990                         } else {
 991                                 $dxchan->delay($buf);
 992                         }
 993                 }
 994         }
 995 }
 996
 997 sub send_wcy_spot
 998 {
 999         my $self = shift;
1000         my $line = shift;
1001         my @dxchan = DXChannel->get_all();
1002         my $dxchan;
1003
1004         # send it if it isn't the except list and isn't isolated and still has a hop count
1005         # taking into account filtering and so on
1006         foreach $dxchan (@dxchan) {
1007                 my $routeit;
1008                 my ($filter, $hops);
1009
1010                 if ($dxchan->{wcyfilter}) {
1011                          ($filter, $hops) = Filter::it($dxchan->{wcyfilter}, @_, $self->{call} );
1012                          next unless $filter;
1013                 }
1014                 if ($dxchan->is_clx || $dxchan->is_spider) {
1015                         next if $dxchan == $self;
1016                         if ($hops) {
1017                                 $routeit = $line;
1018                                 $routeit =~ s/\^H\d+\^\~$/\^H$hops\^\~/;
1019                         } else {
1020                                 $routeit = adjust_hops($dxchan, $line);  # adjust its hop count by node name
1021                                 next unless $routeit;
1022                         }
1023                         if ($filter) {
1024                                 $dxchan->send($routeit) if $routeit;
1025                         } else {
1026                                 $dxchan->send($routeit) unless $dxchan->{isolate} || $self->{isolate};
1027                         }
1028                 } elsif ($dxchan->is_user && $dxchan->{wcy}) {
1029                         my $buf = "WCY de $_[10] <$_[1]> : K=$_[4] expK=$_[5] A=$_[3] R=$_[6] SFI=$_[2] SA=$_[7] GMF=$_[8] Au=$_[9]";
1030                         $buf .= "\a\a" if $dxchan->{beep};
1031                         if ($dxchan->{state} eq 'prompt' || $dxchan->{state} eq 'convers') {
1032                                 $dxchan->send($buf);
1033                         } else {
1034                                 $dxchan->delay($buf);
1035                         }
1036                 }
1037         }
1038 }
1039
1040 # send an announce
1041 sub send_announce
1042 {
1043         my $self = shift;
1044         my $line = shift;
1045         my @dxchan = DXChannel->get_all();
1046         my $dxchan;
1047         my $text = unpad($_[2]);
1048         my $target;
1049         my $to = 'To ';
1050
1051         if ($_[3] eq '*') {     # sysops
1052                 $target = "SYSOP";
1053         } elsif ($_[3] gt ' ') { # speciality list handling
1054                 my ($name) = split /\./, $_[3];
1055                 $target = "$name"; # put the rest in later (if bothered)
1056         }
1057
1058         if ($_[5] eq '1') {
1059                 $target = "WX";
1060                 $to = '';
1061         }
1062         $target = "All" if !$target;
1063
1064         Log('ann', $target, $_[0], $text);
1065
1066         # send it if it isn't the except list and isn't isolated and still has a hop count
1067         # taking into account filtering and so on
1068         foreach $dxchan (@dxchan) {
1069                 my $routeit;
1070                 my ($filter, $hops);
1071
1072                 if ($dxchan->{annfilter}) {
1073                         ($filter, $hops) = Filter::it($dxchan->{annfilter}, @_, $self->{call} );
1074                         next unless $filter;
1075                 }
1076                 if ($dxchan->is_node && $_[1] ne $main::mycall) {  # i.e not specifically routed to me
1077                         next if $dxchan == $self;
1078                         if ($hops) {
1079                                 $routeit = $line;
1080                                 $routeit =~ s/\^H\d+\^\~$/\^H$hops\^\~/;
1081                         } else {
1082                                 $routeit = adjust_hops($dxchan, $line);  # adjust its hop count by node name
1083                                 next unless $routeit;
1084                         }
1085                         if ($filter) {
1086                                 $dxchan->send($routeit) if $routeit;
1087                         } else {
1088                                 $dxchan->send($routeit) unless $dxchan->{isolate} || $self->{isolate};
1089
1090                         }
1091                 } elsif ($dxchan->is_user && $dxchan->{ann}) {
1092                         next if $target eq 'SYSOP' && $dxchan->{priv} < 5;
1093                         my $buf = "$to$target de $_[0]: $text";
1094                         $buf .= "\a\a" if $dxchan->{beep};
1095                         if ($dxchan->{state} eq 'prompt' || $dxchan->{state} eq 'convers') {
1096                                 $dxchan->send($buf);
1097                         } else {
1098                                 $dxchan->delay($buf);
1099                         }
1100                 }
1101         }
1102 }
1103
1104 sub send_local_config
1105 {
1106         my $self = shift;
1107         my $n;
1108         my @nodes;
1109         my @localnodes;
1110         my @remotenodes;
1111
1112         # send our nodes
1113         if ($self->{isolate}) {
1114                 @localnodes = (DXCluster->get_exact($main::mycall));
1115         } else {
1116                 # create a list of all the nodes that are not connected to this connection
1117                 # and are not themselves isolated, this to make sure that isolated nodes
1118         # don't appear outside of this node
1119                 @nodes = DXNode::get_all();
1120                 @nodes = grep { $_->{call} ne $main::mycall } @nodes;
1121                 @nodes = grep { $_->dxchan != $self } @nodes if @nodes;
1122                 @nodes = grep { !$_->dxchan->{isolate} } @nodes if @nodes;
1123                 @localnodes = grep { $_->dxchan->{call} eq $_->{call} } @nodes if @nodes;
1124                 unshift @localnodes, DXCluster->get_exact($main::mycall);
1125                 @remotenodes = grep { $_->dxchan->{call} ne $_->{call} } @nodes if @nodes;
1126         }
1127
1128         my @s = $me->pc19(@localnodes, @remotenodes);
1129         for (@s) {
1130                 my $routeit = adjust_hops($self, $_);
1131                 $self->send($routeit) if $routeit;
1132         }
1133
1134         # get all the users connected on the above nodes and send them out
1135         foreach $n (@localnodes, @remotenodes) {
1136                 my @users = values %{$n->list};
1137                 my @s = pc16($n, @users);
1138                 for (@s) {
1139                         my $routeit = adjust_hops($self, $_);
1140                         $self->send($routeit) if $routeit;
1141                 }
1142         }
1143 }
1144
1145 #
1146 # route a message down an appropriate interface for a callsign
1147 #
1148 # is called route(to, pcline);
1149 #
1150 sub route
1151 {
1152         my ($self, $call, $line) = @_;
1153         my $cl = DXCluster->get_exact($call);
1154         if ($cl) {       # don't route it back down itself
1155                 if (ref $self && $call eq $self->{call}) {
1156                         dbg('chan', "Trying to route back to source, dropped");
1157                         return;
1158                 }
1159                 my $hops;
1160                 my $dxchan = $cl->{dxchan};
1161                 if ($dxchan) {
1162                         my $routeit = adjust_hops($dxchan, $line);   # adjust its hop count by node name
1163                         if ($routeit) {
1164                                 $dxchan->send($routeit) if $dxchan;
1165                         }
1166                 }
1167         }
1168 }
1169
1170 # broadcast a message to all clusters taking into account isolation
1171 # [except those mentioned after buffer]
1172 sub broadcast_ak1a
1173 {
1174         my $s = shift;                          # the line to be rebroadcast
1175         my @except = @_;                        # to all channels EXCEPT these (dxchannel refs)
1176         my @dxchan = DXChannel::get_all_ak1a();
1177         my $dxchan;
1178
1179         # send it if it isn't the except list and isn't isolated and still has a hop count
1180         foreach $dxchan (@dxchan) {
1181                 next if grep $dxchan == $_, @except;
1182                 my $routeit = adjust_hops($dxchan, $s);      # adjust its hop count by node name
1183                 $dxchan->send($routeit) unless $dxchan->{isolate} || !$routeit;
1184         }
1185 }
1186
1187 # broadcast a message to all clusters ignoring isolation
1188 # [except those mentioned after buffer]
1189 sub broadcast_all_ak1a
1190 {
1191         my $s = shift;                          # the line to be rebroadcast
1192         my @except = @_;                        # to all channels EXCEPT these (dxchannel refs)
1193         my @dxchan = DXChannel::get_all_ak1a();
1194         my $dxchan;
1195
1196         # send it if it isn't the except list and isn't isolated and still has a hop count
1197         foreach $dxchan (@dxchan) {
1198                 next if grep $dxchan == $_, @except;
1199                 my $routeit = adjust_hops($dxchan, $s);      # adjust its hop count by node name
1200                 $dxchan->send($routeit);
1201         }
1202 }
1203
1204 # broadcast to all users
1205 # storing the spot or whatever until it is in a state to receive it
1206 sub broadcast_users
1207 {
1208         my $s = shift;                          # the line to be rebroadcast
1209         my $sort = shift;           # the type of transmission
1210         my $fref = shift;           # a reference to an object to filter on
1211         my @except = @_;                        # to all channels EXCEPT these (dxchannel refs)
1212         my @dxchan = DXChannel::get_all_users();
1213         my $dxchan;
1214         my @out;
1215
1216         foreach $dxchan (@dxchan) {
1217                 next if grep $dxchan == $_, @except;
1218                 push @out, $dxchan;
1219         }
1220         broadcast_list($s, $sort, $fref, @out);
1221 }
1222
1223 # broadcast to a list of users
1224 sub broadcast_list
1225 {
1226         my $s = shift;
1227         my $sort = shift;
1228         my $fref = shift;
1229         my $dxchan;
1230
1231         foreach $dxchan (@_) {
1232                 my $filter = 1;
1233
1234                 if ($sort eq 'dx') {
1235                     next unless $dxchan->{dx};
1236                         ($filter) = Filter::it($dxchan->{spotfilter}, @{$fref}) if ref $fref;
1237                         next unless $filter;
1238                 }
1239                 next if $sort eq 'ann' && !$dxchan->{ann};
1240                 next if $sort eq 'wwv' && !$dxchan->{wwv};
1241                 next if $sort eq 'wcy' && !$dxchan->{wcy};
1242                 next if $sort eq 'wx' && !$dxchan->{wx};
1243
1244                 $s =~ s/\a//og unless $dxchan->{beep};
1245
1246                 if ($dxchan->{state} eq 'prompt' || $dxchan->{state} eq 'convers') {
1247                         $dxchan->send($s);
1248                 } else {
1249                         $dxchan->delay($s);
1250                 }
1251         }
1252 }
1253
1254
1255 #
1256 # obtain the hops from the list for this callsign and pc no
1257 #
1258
1259 sub get_hops
1260 {
1261         my $pcno = shift;
1262         my $hops = $DXProt::hopcount{$pcno};
1263         $hops = $DXProt::def_hopcount if !$hops;
1264         return "H$hops";
1265 }
1266
1267 #
1268 # adjust the hop count on a per node basis using the user loadable
1269 # hop table if available or else decrement an existing one
1270 #
1271
1272 sub adjust_hops
1273 {
1274         my $self = shift;
1275         my $s = shift;
1276         my $call = $self->{call};
1277         my $hops;
1278
1279         if (($hops) = $s =~ /\^H(\d+)\^~?$/o) {
1280                 my ($pcno) = $s =~ /^PC(\d\d)/o;
1281                 confess "$call called adjust_hops with '$s'" unless $pcno;
1282                 my $ref = $nodehops{$call} if %nodehops;
1283                 if ($ref) {
1284                         my $newhops = $ref->{$pcno};
1285                         return "" if defined $newhops && $newhops == 0;
1286                         $newhops = $ref->{default} unless $newhops;
1287                         return "" if defined $newhops && $newhops == 0;
1288                         $newhops = $hops if !$newhops;
1289                         $s =~ s/\^H(\d+)(\^~?)$/\^H$newhops$2/ if $newhops;
1290                 } else {
1291                         # simply decrement it
1292                         $hops--;
1293                         return "" if !$hops;
1294                         $s =~ s/\^H(\d+)(\^~?)$/\^H$hops$2/ if $hops;
1295                 }
1296         }
1297         return $s;
1298 }
1299
1300 #
1301 # load hop tables
1302 #
1303 sub load_hops
1304 {
1305         my $self = shift;
1306         return $self->msg('lh1') unless -e "$main::data/hop_table.pl";
1307         do "$main::data/hop_table.pl";
1308         return $@ if $@;
1309         return 0;
1310 }
1311
1312
1313 # add a ping request to the ping queues
1314 sub addping
1315 {
1316         my ($from, $to) = @_;
1317         my $ref = $pings{$to} || [];
1318         my $r = {};
1319         $r->{call} = $from;
1320         $r->{t} = [ gettimeofday ];
1321         route(undef, $to, pc51($to, $main::mycall, 1));
1322         push @$ref, $r;
1323         $pings{$to} = $ref;
1324 }
1325
1326 # add a rcmd request to the rcmd queues
1327 sub addrcmd
1328 {
1329         my ($self, $to, $cmd) = @_;
1330
1331         my $r = {};
1332         $r->{call} = $self->{call};
1333         $r->{t} = $main::systime;
1334         $r->{cmd} = $cmd;
1335         $rcmds{$to} = $r;
1336
1337         my $ref = DXCluster->get_exact($to);
1338     if ($ref && $ref->dxchan && $ref->dxchan->is_clx) {
1339                 route(undef, $to, pc84($main::mycall, $to, $self->{call}, $cmd));
1340         } else {
1341                 route(undef, $to, pc34($main::mycall, $to, $cmd));
1342         }
1343 }
1344
1345 sub disconnect
1346 {
1347         my $self = shift;
1348         my $nopc39 = shift;
1349
1350         if ($self->{conn} && !$nopc39) {
1351                 $self->send_now("D", DXProt::pc39($main::mycall, $self->msg('disc1', "System Op")));
1352         }
1353
1354         $self->SUPER::disconnect;
1355 }
1356 1;
1357 __END__