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 Carp;
  25
  26 use strict;
  27 use vars qw($me $pc11_max_age $pc11_dup_age %dup $last_hour %pings %rcmds %nodehops);
  28
  29 $me = undef;                                    # the channel id for this cluster
  30 $pc11_max_age = 1*3600;                 # the maximum age for an incoming 'real-time' pc11
  31 $pc11_dup_age = 24*3600;                # the maximum time to keep the dup list for
  32 %dup = ();                                              # the pc11 and 26 dup hash
  33 $last_hour = time;                              # last time I did an hourly periodic update
  34 %pings = ();                    # outstanding ping requests outbound
  35 %rcmds = ();                    # outstanding rcmd requests outbound
  36 %nodehops = ();                 # node specific hop control
  37
  38
  39 sub init
  40 {
  41         my $user = DXUser->get($main::mycall);
  42         $DXProt::myprot_version += $main::version*100;
  43         $me = DXProt->new($main::mycall, 0, $user);
  44         $me->{here} = 1;
  45         $me->{state} = "indifferent";
  46         do "$main::data/hop_table.pl" if -e "$main::data/hop_table.pl";
  47         confess $@ if $@;
  48         #  $me->{sort} = 'M';    # M for me
  49 }
  50
  51 #
  52 # obtain a new connection this is derived from dxchannel
  53 #
  54
  55 sub new
  56 {
  57         my $self = DXChannel::alloc(@_);
  58         $self->{'sort'} = 'A';          # in absence of how to find out what sort of an object I am
  59         return $self;
  60 }
  61
  62 # this is how a pc connection starts (for an incoming connection)
  63 # issue a PC38 followed by a PC18, then wait for a PC20 (remembering
  64 # all the crap that comes between).
  65 sub start
  66 {
  67         my ($self, $line, $sort) = @_;
  68         my $call = $self->{call};
  69         my $user = $self->{user};
  70
  71         # remember type of connection
  72         $self->{consort} = $line;
  73         $self->{outbound} = $sort eq 'O';
  74         $self->{priv} = $user->priv;
  75         $self->{lang} = $user->lang;
  76         $self->{isolate} = $user->{isolate};
  77         $self->{consort} = $line;       # save the connection type
  78         $self->{here} = 1;
  79
  80         # set unbuffered
  81         $self->send_now('B',"0");
  82
  83         # send initialisation string
  84         if (!$self->{outbound}) {
  85                 $self->send(pc38()) if DXNode->get_all();
  86                 $self->send(pc18());
  87         }
  88         $self->state('init');
  89         $self->pc50_t(time);
  90
  91         Log('DXProt', "$call connected");
  92 }
  93
  94 #
  95 # This is the normal pcxx despatcher
  96 #
  97 sub normal
  98 {
  99         my ($self, $line) = @_;
 100         my @field = split /[\^\~]/, $line;
 101
 102         # ignore any lines that don't start with PC
 103         return if !$field[0] =~ /^PC/;
 104
 105         # process PC frames
 106         my ($pcno) = $field[0] =~ /^PC(\d\d)/; # just get the number
 107         return unless $pcno;
 108         return if $pcno < 10 || $pcno > 51;
 109
 110  SWITCH: {
 111                 if ($pcno == 10) {              # incoming talk
 112
 113                         # is it for me or one of mine?
 114                         my $call = ($field[5] gt ' ') ? $field[5] : $field[2];
 115                         if ($call eq $main::mycall || grep $_ eq $call, get_all_user_calls()) {
 116
 117                                 # yes, it is
 118                                 my $text = unpad($field[3]);
 119                                 Log('talk', $call, $field[1], $field[6], $text);
 120                                 $call = $main::myalias if $call eq $main::mycall;
 121                                 my $ref = DXChannel->get($call);
 122                                 $ref->send("$call de $field[1]: $text") if $ref;
 123                         } else {
 124                                 route($field[2], $line); # relay it on its way
 125                         }
 126                         return;
 127                 }
 128
 129                 if ($pcno == 11 || $pcno == 26) { # dx spot
 130
 131                         # if this is a 'nodx' node then ignore it
 132                         last SWITCH if grep $field[7] =~ /^$_/,  @DXProt::nodx_node;
 133
 134                         # convert the date to a unix date
 135                         my $d = cltounix($field[3], $field[4]);
 136                         return if !$d || ($pcno == 11 && $d < $main::systime - $pc11_max_age); # bang out (and don't pass on) if date is invalid or the spot is too old
 137
 138                         # strip off the leading & trailing spaces from the comment
 139                         my $text = unpad($field[5]);
 140
 141                         # store it away
 142                         my $spotter = $field[6];
 143                         $spotter =~ s/-\d+$//o; # strip off the ssid from the spotter
 144
 145                         # do some de-duping
 146                         my $dupkey = "$field[1]$field[2]$d$text$field[6]";
 147                         return if $dup{$dupkey};
 148                         $dup{$dupkey} = $d;
 149
 150                         my $spot = Spot::add($field[1], $field[2], $d, $text, $spotter);
 151
 152                         # send orf to the users
 153                         if ($spot && $pcno == 11) {
 154                                 my $buf = Spot::formatb($field[1], $field[2], $d, $text, $spotter);
 155                                 broadcast_users("$buf\a\a");
 156                         }
 157
 158                         last SWITCH;
 159                 }
 160
 161                 if ($pcno == 12) {              # announces
 162
 163                         if ($field[2] eq '*' || $field[2] eq $main::mycall) {
 164
 165                                 # strip leading and trailing stuff
 166                                 my $text = unpad($field[3]);
 167                                 my $target;
 168                                 my $to = 'To ';
 169                                 my @list;
 170
 171                                 if ($field[4] eq '*') { # sysops
 172                                         $target = "SYSOP";
 173                                         @list = map { $_->priv >= 5 ? $_ : () } get_all_users();
 174                                 } elsif ($field[4] gt ' ') { # speciality list handling
 175                                         my ($name) = split /\./, $field[4];
 176                                         $target = "$name"; # put the rest in later (if bothered)
 177                                 }
 178
 179                                 if ($field[6] eq '1') {
 180                                         $target = "WX";
 181                                         $to = '';
 182                                 }
 183                                 $target = "All" if !$target;
 184
 185                                 if (@list > 0) {
 186                                         broadcast_list("$to$target de $field[1]: $text", @list);
 187                                 } else {
 188                                         broadcast_users("$target de $field[1]: $text");
 189                                 }
 190                                 Log('ann', $target, $field[1], $text);
 191
 192                                 return if $field[2] eq $main::mycall; # it's routed to me
 193                         } else {
 194                                 route($field[2], $line);
 195                                 return;                 # only on a routed one
 196                         }
 197
 198                         last SWITCH;
 199                 }
 200
 201                 if ($pcno == 13) {
 202                         last SWITCH;
 203                 }
 204                 if ($pcno == 14) {
 205                         last SWITCH;
 206                 }
 207                 if ($pcno == 15) {
 208                         last SWITCH;
 209                 }
 210
 211                 if ($pcno == 16) {              # add a user
 212                         my $node = DXCluster->get_exact($field[1]);
 213                         last SWITCH if !$node; # ignore if havn't seen a PC19 for this one yet
 214                         my $i;
 215
 216
 217                         for ($i = 2; $i < $#field; $i++) {
 218                                 my ($call, $confmode, $here) = $field[$i] =~ /^(\S+) (-) (\d)/o;
 219                                 next if length $call < 3;
 220                                 next if !$confmode;
 221                                 $call = uc $call;
 222                                 next if DXCluster->get_exact($call); # we already have this (loop?)
 223
 224                                 $confmode = $confmode eq '*';
 225                                 DXNodeuser->new($self, $node, $call, $confmode, $here);
 226
 227                                 # add this station to the user database, if required
 228                                 $call =~ s/-\d+$//o;        # remove ssid for users
 229                                 my $user = DXUser->get_current($call);
 230                                 $user = DXUser->new($call) if !$user;
 231                                 $user->homenode($node->call) if !$user->homenode;
 232                                 $user->node($node->call);
 233                                 $user->lastin($main::systime);
 234                                 $user->put;
 235                         }
 236
 237                         # queue up any messages (look for privates only)
 238                         DXMsg::queue_msg(1) if $self->state eq 'normal';
 239                         last SWITCH;
 240                 }
 241
 242                 if ($pcno == 17) {              # remove a user
 243
 244                         my $ref = DXCluster->get_exact($field[1]);
 245                         $ref->del() if $ref;
 246                         last SWITCH;
 247                 }
 248
 249                 if ($pcno == 18) {              # link request
 250                         $self->send_local_config();
 251                         $self->send(pc20());
 252                         $self->state('init');
 253                         last SWITCH;
 254                 }
 255
 256                 if ($pcno == 19) {              # incoming cluster list
 257                         my $i;
 258                         for ($i = 1; $i < $#field-1; $i += 4) {
 259                                 my $here = $field[$i];
 260                                 my $call = uc $field[$i+1];
 261                                 my $confmode = $field[$i+2] eq '*';
 262                                 my $ver = $field[$i+3];
 263
 264                                 # now check the call over
 265                                 next if DXCluster->get_exact($call); # we already have this
 266
 267                                 # check for sane parameters
 268                                 next if $ver < 5000; # only works with version 5 software
 269                                 next if length $call < 3; # min 3 letter callsigns
 270                                 DXNode->new($self, $call, $confmode, $here, $ver);
 271
 272                                 # unbusy and stop and outgoing mail (ie if somehow we receive another PC19 without a disconnect)
 273                                 my $mref = DXMsg::get_busy($call);
 274                                 $mref->stop_msg($self) if $mref;
 275
 276                                 # add this station to the user database, if required (don't remove SSID from nodes)
 277                                 my $user = DXUser->get_current($call);
 278                                 if (!$user) {
 279                                         $user = DXUser->new($call);
 280                                         $user->sort('A');
 281                                         $user->priv(1);                   # I have relented and defaulted nodes
 282                                         $self->{priv} = 1;                # to user RCMDs allowed
 283                                         $user->homenode($call);
 284                                         $user->node($call);
 285                                 }
 286                                 $user->lastin($main::systime);
 287                                 $user->put;
 288                         }
 289
 290                         # queue up any messages
 291                         DXMsg::queue_msg(0) if $self->state eq 'normal';
 292                         last SWITCH;
 293                 }
 294
 295                 if ($pcno == 20) {              # send local configuration
 296                         $self->send_local_config();
 297                         $self->send(pc22());
 298                         $self->state('normal');
 299
 300                         # queue mail
 301                         DXMsg::queue_msg(0);
 302                         return;
 303                 }
 304
 305                 if ($pcno == 21) {              # delete a cluster from the list
 306                         my $call = uc $field[1];
 307                         if ($call ne $main::mycall) { # don't allow malicious buggers to disconnect me!
 308                                 my $ref = DXCluster->get_exact($call);
 309                                 $ref->del() if $ref;
 310                         }
 311                         last SWITCH;
 312                 }
 313
 314                 if ($pcno == 22) {
 315                         $self->state('normal');
 316
 317                         # queue mail
 318                         DXMsg::queue_msg(0);
 319                         return;
 320                 }
 321
 322                 if ($pcno == 23 || $pcno == 27) { # WWV info
 323                         Geomag::update(@field[1..$#field]);
 324                         last SWITCH;
 325                 }
 326
 327                 if ($pcno == 24) {              # set here status
 328                         my $call = uc $field[1];
 329                         my $ref = DXCluster->get_exact($call);
 330                         $ref->here($field[2]) if $ref;
 331                         last SWITCH;
 332                 }
 333
 334                 if ($pcno == 25) {
 335                         last SWITCH;
 336                 }
 337
 338                 if (($pcno >= 28 && $pcno <= 33) || $pcno == 40 || $pcno == 42 || $pcno == 49) { # mail/file handling
 339                         DXMsg::process($self, $line);
 340                         return;
 341                 }
 342
 343                 if ($pcno == 34 || $pcno == 36) { # remote commands (incoming)
 344                         if ($field[1] eq $main::mycall) {
 345                                 my $ref = DXUser->get_current($field[2]);
 346                                 Log('rcmd', 'in', $ref->{priv}, $field[2], $field[3]);
 347                                 unless ($field[3] =~ /rcmd/i) {    # not allowed to relay RCMDS!
 348                                         if ($ref->{priv}) {     # you have to have SOME privilege, the commands have further filtering
 349                                                 $self->{remotecmd} = 1; # for the benefit of any command that needs to know
 350                                                 my @in = (DXCommandmode::run_cmd($self, $field[3]));
 351                                                 for (@in) {
 352                                                         s/\s*$//og;
 353                                                         $self->send(pc35($main::mycall, $field[2], "$main::mycall:$_"));
 354                                                         Log('rcmd', 'out', $field[2], $_);
 355                                                 }
 356                                                 delete $self->{remotecmd};
 357                                         }
 358                                 } else {
 359                                         $self->send(pc35($main::mycall, $field[2], "$main::mycall:Tut tut tut...!"));
 360                                 }
 361                         } else {
 362                                 route($field[1], $line);
 363                         }
 364                         return;
 365                 }
 366
 367                 if ($pcno == 35) {              # remote command replies
 368                         if ($field[1] eq $main::mycall) {
 369                                 my $s = $rcmds{$field[2]};
 370                                 if ($s) {
 371                                         my $dxchan = DXChannel->get($s->{call});
 372                                         $dxchan->send($field[3]) if $dxchan;
 373                                         delete $rcmds{$field[2]} if !$dxchan;
 374                                 }
 375                         } else {
 376                                 route($field[1], $line);
 377                         }
 378                         return;
 379                 }
 380
 381                 if ($pcno == 37) {
 382                         last SWITCH;
 383                 }
 384
 385                 if ($pcno == 38) {              # node connected list from neighbour
 386                         return;
 387                 }
 388
 389                 if ($pcno == 39) {              # incoming disconnect
 390                         $self->disconnect();
 391                         return;
 392                 }
 393
 394                 if ($pcno == 41) {              # user info
 395                         # add this station to the user database, if required
 396                         my $user = DXUser->get_current($field[1]);
 397                         if (!$user) {
 398                                 # then try without an SSID
 399                                 $field[1] =~ s/-\d+$//o;
 400                                 $user = DXUser->get_current($field[1]);
 401                         }
 402                         $user = DXUser->new($field[1]) if !$user;
 403
 404                         if ($field[2] == 1) {
 405                                 $user->name($field[3]);
 406                         } elsif ($field[2] == 2) {
 407                                 $user->qth($field[3]);
 408                         } elsif ($field[2] == 3) {
 409                                 my ($lat, $long) = DXBearing::stoll($field[3]);
 410                                 $user->lat($lat);
 411                                 $user->long($long);
 412                         } elsif ($field[2] == 4) {
 413                                 $user->homenode($field[3]);
 414                         }
 415                         $user->put;
 416                         last SWITCH;
 417                 }
 418                 if ($pcno == 43) {
 419                         last SWITCH;
 420                 }
 421                 if ($pcno == 44) {
 422                         last SWITCH;
 423                 }
 424                 if ($pcno == 45) {
 425                         last SWITCH;
 426                 }
 427                 if ($pcno == 46) {
 428                         last SWITCH;
 429                 }
 430                 if ($pcno == 47) {
 431                         last SWITCH;
 432                 }
 433                 if ($pcno == 48) {
 434                         last SWITCH;
 435                 }
 436
 437                 if ($pcno == 50) {              # keep alive/user list
 438                         my $ref = DXCluster->get_exact($field[1]);
 439                         $ref->update_users($field[2]) if $ref;
 440                         last SWITCH;
 441                 }
 442
 443                 if ($pcno == 51) {              # incoming ping requests/answers
 444
 445                         # is it for us?
 446                         if ($field[1] eq $main::mycall) {
 447                                 my $flag = $field[3];
 448                                 if ($flag == 1) {
 449                                         $self->send(pc51($field[2], $field[1], '0'));
 450                                 } else {
 451                                         # it's a reply, look in the ping list for this one
 452                                         my $ref = $pings{$field[2]};
 453                                         if ($ref) {
 454                                                 my $r = shift @$ref;
 455                                                 my $dxchan = DXChannel->get($r->{call});
 456                                                 $dxchan->send($dxchan->msg('pingi', $field[2], atime($main::systime), $main::systime - $r->{t})) if $dxchan;
 457                                         }
 458                                 }
 459
 460                         } else {
 461                                 # route down an appropriate thingy
 462                                 route($field[1], $line);
 463                         }
 464                         return;
 465                 }
 466         }
 467
 468          # if get here then rebroadcast the thing with its Hop count decremented (if
 469          # there is one). If it has a hop count and it decrements to zero then don't
 470          # rebroadcast it.
 471          #
 472          # NOTE - don't arrive here UNLESS YOU WANT this lump of protocol to be
 473          #        REBROADCAST!!!!
 474          #
 475
 476         if (!$self->{isolate}) {
 477                 broadcast_ak1a($line, $self); # send it to everyone but me
 478         }
 479 }
 480
 481 #
 482 # This is called from inside the main cluster processing loop and is used
 483 # for despatching commands that are doing some long processing job
 484 #
 485 sub process
 486 {
 487         my $t = time;
 488         my @dxchan = DXChannel->get_all();
 489         my $dxchan;
 490
 491         foreach $dxchan (@dxchan) {
 492                 next unless $dxchan->is_ak1a();
 493                 next if $dxchan == $me;
 494
 495                 # send a pc50 out on this channel
 496                 if ($t >= $dxchan->pc50_t + $DXProt::pc50_interval) {
 497                         $dxchan->send(pc50());
 498                         $dxchan->pc50_t($t);
 499                 }
 500         }
 501
 502         my $key;
 503         my $val;
 504         my $cutoff;
 505         if ($main::systime - 3600 > $last_hour) {
 506                 $cutoff  = $main::systime - $pc11_dup_age;
 507                 while (($key, $val) = each %dup) {
 508                         delete $dup{$key} if $val < $cutoff;
 509                 }
 510                 $last_hour = $main::systime;
 511         }
 512 }
 513
 514 #
 515 # finish up a pc context
 516 #
 517 sub finish
 518 {
 519         my $self = shift;
 520         my $call = $self->call;
 521         my $ref = DXCluster->get_exact($call);
 522
 523         # unbusy and stop and outgoing mail
 524         my $mref = DXMsg::get_busy($call);
 525         $mref->stop_msg($self) if $mref;
 526
 527         # broadcast to all other nodes that all the nodes connected to via me are gone
 528         my @gonenodes = map { $_->dxchan == $self ? $_ : () } DXNode::get_all();
 529         my $node;
 530
 531         foreach $node (@gonenodes) {
 532                 next if $node->call eq $call;
 533                 broadcast_ak1a(pc21($node->call, 'Gone'), $self) unless $self->{isolate}; # done like this 'cos DXNodes don't have a pc21 method
 534                 $node->del();
 535         }
 536
 537         # remove outstanding pings
 538         delete $pings{$call};
 539
 540         # now broadcast to all other ak1a nodes that I have gone
 541         broadcast_ak1a(pc21($call, 'Gone.'), $self);
 542
 543         Log('DXProt', $call . " Disconnected");
 544         $ref->del() if $ref;
 545 }
 546
 547 #
 548 # some active measures
 549 #
 550
 551 sub send_local_config
 552 {
 553         my $self = shift;
 554         my $n;
 555         my @nodes;
 556
 557         # send our nodes
 558         if ($self->{isolate}) {
 559                 @nodes = (DXCluster->get_exact($main::mycall));
 560         } else {
 561                 # create a list of all the nodes that are not connected to this connection
 562                 @nodes = DXNode::get_all();
 563                 @nodes = grep { $_->dxchan != $self } @nodes;
 564         }
 565
 566         my @s = $me->pc19(@nodes);
 567         for (@s) {
 568                 my $routeit = adjust_hops($self, $_);
 569                 $self->send($_) if $routeit;
 570         }
 571
 572         # get all the users connected on the above nodes and send them out
 573         foreach $n (@nodes) {
 574                 my @users = values %{$n->list};
 575                 my @s = pc16($n, @users);
 576                 for (@s) {
 577                         my $routeit = adjust_hops($self, $_);
 578                         $self->send($_) if $routeit;
 579                 }
 580         }
 581 }
 582
 583 #
 584 # route a message down an appropriate interface for a callsign
 585 #
 586 # is called route(to, pcline);
 587 #
 588 sub route
 589 {
 590         my ($call, $line) = @_;
 591         my $cl = DXCluster->get_exact($call);
 592         if ($cl) {
 593                 my $hops;
 594                 my $dxchan = $cl->{dxchan};
 595                 if ($dxchan) {
 596                         my $routeit = adjust_hops($dxchan, $line);   # adjust its hop count by node name
 597                         if ($routeit) {
 598                                 $dxchan->send($line) if $dxchan;
 599                         }
 600                 }
 601         }
 602 }
 603
 604 # broadcast a message to all clusters [except those mentioned after buffer]
 605 sub broadcast_ak1a
 606 {
 607         my $s = shift;                          # the line to be rebroadcast
 608         my @except = @_;                        # to all channels EXCEPT these (dxchannel refs)
 609         my @dxchan = get_all_ak1a();
 610         my $dxchan;
 611
 612         # send it if it isn't the except list and isn't isolated and still has a hop count
 613         foreach $dxchan (@dxchan) {
 614                 next if grep $dxchan == $_, @except;
 615                 my $routeit = adjust_hops($dxchan, $s);      # adjust its hop count by node name
 616                 $dxchan->send($s) unless $dxchan->{isolate} || !$routeit;
 617         }
 618 }
 619
 620 # broadcast to all users
 621 sub broadcast_users
 622 {
 623         my $s = shift;                          # the line to be rebroadcast
 624         my @except = @_;                        # to all channels EXCEPT these (dxchannel refs)
 625         my @dxchan = get_all_users();
 626         my $dxchan;
 627
 628         foreach $dxchan (@dxchan) {
 629                 next if grep $dxchan == $_, @except;
 630                 $s =~ s/\a//og if !$dxchan->{beep};
 631                 $dxchan->send($s);              # send it if it isn't the except list or hasn't a passout flag
 632         }
 633 }
 634
 635 # broadcast to a list of users
 636 sub broadcast_list
 637 {
 638         my $s = shift;
 639         my $dxchan;
 640
 641         foreach $dxchan (@_) {
 642                 $dxchan->send($s);              # send it
 643         }
 644 }
 645
 646 #
 647 # gimme all the ak1a nodes
 648 #
 649 sub get_all_ak1a
 650 {
 651         my @list = DXChannel->get_all();
 652         my $ref;
 653         my @out;
 654         foreach $ref (@list) {
 655                 push @out, $ref if $ref->is_ak1a;
 656         }
 657         return @out;
 658 }
 659
 660 # return a list of all users
 661 sub get_all_users
 662 {
 663         my @list = DXChannel->get_all();
 664         my $ref;
 665         my @out;
 666         foreach $ref (@list) {
 667                 push @out, $ref if $ref->is_user;
 668         }
 669         return @out;
 670 }
 671
 672 # return a list of all user callsigns
 673 sub get_all_user_calls
 674 {
 675         my @list = DXChannel->get_all();
 676         my $ref;
 677         my @out;
 678         foreach $ref (@list) {
 679                 push @out, $ref->call if $ref->is_user;
 680         }
 681         return @out;
 682 }
 683
 684 #
 685 # obtain the hops from the list for this callsign and pc no
 686 #
 687
 688 sub get_hops
 689 {
 690         my ($pcno) = @_;
 691         my $hops = $DXProt::hopcount{$pcno};
 692         $hops = $DXProt::def_hopcount if !$hops;
 693         return "H$hops";
 694 }
 695
 696 #
 697 # adjust the hop count on a per node basis using the user loadable
 698 # hop table if available or else decrement an existing one
 699 #
 700
 701 sub adjust_hops
 702 {
 703         my $self = shift;
 704         my $call = $self->{call};
 705         my $hops;
 706
 707         if (($hops) = $_[0] =~ /\^H(\d+)\^~?$/o) {
 708                 my ($pcno) = $_[0] =~ /^PC(\d\d)/o;
 709                 confess "$call called adjust_hops with '$_[0]'" unless $pcno;
 710                 my $ref = $nodehops{$call} if %nodehops;
 711                 if ($ref) {
 712                         my $newhops = $ref->{$pcno};
 713                         return 0 if defined $newhops && $newhops == 0;
 714                         $newhops = $ref->{default} unless $newhops;
 715                         return 0 if defined $newhops && $newhops == 0;
 716                         $newhops = $hops if !$newhops;
 717                         $_[0] =~ s/\^H(\d+)(\^~?)$/\^H$newhops$2/ if $newhops;
 718                 } else {
 719                         # simply decrement it
 720                         $hops--;
 721                         return 0 if !$hops;
 722                         $_[0] =~ s/\^H(\d+)(\^~?)$/\^H$hops$2/ if $hops;
 723                 }
 724         }
 725         return 1;
 726 }
 727
 728 #
 729 # load hop tables
 730 #
 731 sub load_hops
 732 {
 733         my $self = shift;
 734         return $self->msg('lh1') unless -e "$main::data/hop_table.pl";
 735         do "$main::data/hop_table.pl";
 736         return $@ if $@;
 737         return 0;
 738 }
 739
 740 # remove leading and trailing spaces from an input string
 741 sub unpad
 742 {
 743         my $s = shift;
 744         $s =~ s/^\s+|\s+$//;
 745         return $s;
 746 }
 747
 748 # add a ping request to the ping queues
 749 sub addping
 750 {
 751         my ($from, $to) = @_;
 752         my $ref = $pings{$to};
 753         $ref = $pings{$to} = [] if !$ref;
 754         my $r = {};
 755         $r->{call} = $from;
 756         $r->{t} = $main::systime;
 757         route($to, pc51($to, $main::mycall, 1));
 758         push @$ref, $r;
 759 }
 760
 761 # add a rcmd request to the rcmd queues
 762 sub addrcmd
 763 {
 764         my ($from, $to, $cmd) = @_;
 765         my $r = {};
 766         $r->{call} = $from;
 767         $r->{t} = $main::systime;
 768         $r->{cmd} = $cmd;
 769         route($to, pc34($main::mycall, $to, $cmd));
 770         $rcmds{$to} = $r;
 771 }
 772 1;
 773 __END__