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 Local;
  26
  27 use Carp;
  28
  29 use strict;
  30 use vars qw($me $pc11_max_age $pc11_dup_age $pc23_dup_age %spotdup %wwvdup $last_hour %pings %rcmds %nodehops);
  31
  32 $me = undef;                                    # the channel id for this cluster
  33 $pc11_max_age = 1*3600;                 # the maximum age for an incoming 'real-time' pc11
  34 $pc11_dup_age = 24*3600;                # the maximum time to keep the spot dup list for
  35 $pc23_dup_age = 24*3600;                # the maximum time to keep the wwv dup list for
  36 %spotdup = ();                              # the pc11 and 26 dup hash
  37 %wwvdup = ();                               # the pc23 and 27 dup hash
  38 $last_hour = time;                              # last time I did an hourly periodic update
  39 %pings = ();                    # outstanding ping requests outbound
  40 %rcmds = ();                    # outstanding rcmd requests outbound
  41 %nodehops = ();                 # node specific hop control
  42
  43
  44 sub init
  45 {
  46         my $user = DXUser->get($main::mycall);
  47         $DXProt::myprot_version += $main::version*100;
  48         $me = DXProt->new($main::mycall, 0, $user);
  49         $me->{here} = 1;
  50         $me->{state} = "indifferent";
  51         do "$main::data/hop_table.pl" if -e "$main::data/hop_table.pl";
  52         confess $@ if $@;
  53         #  $me->{sort} = 'M';    # M for me
  54
  55         # now prime the spot duplicates file with today's and yesterday's data
  56     my @today = Julian::unixtoj(time);
  57         my @spots = Spot::readfile(@today);
  58         @today = Julian::sub(@today, 1);
  59         push @spots, Spot::readfile(@today);
  60         for (@spots) {
  61                 my $dupkey = "$_->[0]$_->[1]$_->[2]$_->[3]$_->[4]";
  62                 $spotdup{$dupkey} = $_->[2];
  63         }
  64
  65         # now prime the wwv duplicates file with just this month's data
  66         my @wwv = Geomag::readfile(time);
  67         for (@wwv) {
  68                 my $dupkey = "$_->[1].$_->[2]$_->[3]$_->[4]";
  69                 $wwvdup{$dupkey} = $_->[1];
  70         }
  71
  72 }
  73
  74 #
  75 # obtain a new connection this is derived from dxchannel
  76 #
  77
  78 sub new
  79 {
  80         my $self = DXChannel::alloc(@_);
  81         $self->{'sort'} = 'A';          # in absence of how to find out what sort of an object I am
  82         return $self;
  83 }
  84
  85 # this is how a pc connection starts (for an incoming connection)
  86 # issue a PC38 followed by a PC18, then wait for a PC20 (remembering
  87 # all the crap that comes between).
  88 sub start
  89 {
  90         my ($self, $line, $sort) = @_;
  91         my $call = $self->{call};
  92         my $user = $self->{user};
  93
  94         # remember type of connection
  95         $self->{consort} = $line;
  96         $self->{outbound} = $sort eq 'O';
  97         $self->{priv} = $user->priv;
  98         $self->{lang} = $user->lang;
  99         $self->{isolate} = $user->{isolate};
 100         $self->{consort} = $line;       # save the connection type
 101         $self->{here} = 1;
 102
 103         # set unbuffered
 104         $self->send_now('B',"0");
 105
 106         # send initialisation string
 107         if (!$self->{outbound}) {
 108                 $self->send(pc38()) if DXNode->get_all();
 109                 $self->send(pc18());
 110         }
 111         $self->state('init');
 112         $self->pc50_t(time);
 113
 114         Log('DXProt', "$call connected");
 115 }
 116
 117 #
 118 # This is the normal pcxx despatcher
 119 #
 120 sub normal
 121 {
 122         my ($self, $line) = @_;
 123         my @field = split /\^/, $line;
 124         pop @field if $field[-1] eq '~';
 125
 126 #       print join(',', @field), "\n";
 127
 128         # ignore any lines that don't start with PC
 129         return if !$field[0] =~ /^PC/;
 130
 131         # process PC frames
 132         my ($pcno) = $field[0] =~ /^PC(\d\d)/; # just get the number
 133         return unless $pcno;
 134         return if $pcno < 10 || $pcno > 51;
 135
 136         # local processing 1
 137         my $pcr;
 138         eval {
 139                 $pcr = Local::pcprot($self, $pcno, @field);
 140         };
 141         dbg('local', "Local::pcprot error $@") if $@;
 142         return if $pcr;
 143
 144  SWITCH: {
 145                 if ($pcno == 10) {              # incoming talk
 146
 147                         # is it for me or one of mine?
 148                         my $call = ($field[5] gt ' ') ? $field[5] : $field[2];
 149                         if ($call eq $main::mycall || grep $_ eq $call, get_all_user_calls()) {
 150
 151                                 # yes, it is
 152                                 my $text = unpad($field[3]);
 153                                 Log('talk', $call, $field[1], $field[6], $text);
 154                                 $call = $main::myalias if $call eq $main::mycall;
 155                                 my $ref = DXChannel->get($call);
 156                                 $ref->send("$call de $field[1]: $text") if $ref && $ref->{talk};
 157                         } else {
 158                                 route($field[2], $line); # relay it on its way
 159                         }
 160                         return;
 161                 }
 162
 163                 if ($pcno == 11 || $pcno == 26) { # dx spot
 164
 165                         # if this is a 'nodx' node then ignore it
 166                         last SWITCH if grep $field[7] =~ /^$_/,  @DXProt::nodx_node;
 167
 168                         # convert the date to a unix date
 169                         my $d = cltounix($field[3], $field[4]);
 170                         # bang out (and don't pass on) if date is invalid or the spot is too old (or too young)
 171                         if (!$d || ($pcno == 11 && ($d < $main::systime - $pc11_max_age || $d > $main::systime + 900))) {
 172                                 dbg('chan', "Spot ignored, invalid date or out of range ($field[3] $field[4])\n");
 173                                 return;
 174                         }
 175
 176                         # strip off the leading & trailing spaces from the comment
 177                         my $text = unpad($field[5]);
 178
 179                         # store it away
 180                         my $spotter = $field[6];
 181                         $spotter =~ s/-\d+$//o; # strip off the ssid from the spotter
 182
 183                         # do some de-duping
 184                         my $freq = $field[1] - 0;
 185                         my $dupkey = "$freq$field[2]$d$text$spotter";
 186                         if ($spotdup{$dupkey}) {
 187                                 dbg('chan', "Duplicate Spot ignored\n");
 188                                 return;
 189                         }
 190
 191                         $spotdup{$dupkey} = $d;
 192
 193                         my $spot = Spot::add($freq, $field[2], $d, $text, $spotter, $field[7]);
 194
 195                         # local processing
 196                         my $r;
 197                         eval {
 198                                 $r = Local::spot1($self, $freq, $field[2], $d, $text, $spotter, $field[7]);
 199                         };
 200                         dbg('local', "Local::spot1 error $@") if $@;
 201                         return if $r;
 202
 203                         # send orf to the users
 204                         if ($spot && $pcno == 11) {
 205                                 my $buf = Spot::formatb($field[1], $field[2], $d, $text, $spotter);
 206                                 broadcast_users("$buf\a\a", 'dx', $spot);
 207                         }
 208
 209                         # DON'T be silly and send on PC26s!
 210                         return if $pcno == 26;
 211
 212                         last SWITCH;
 213                 }
 214
 215                 if ($pcno == 12) {              # announces
 216
 217                         if ($field[2] eq '*' || $field[2] eq $main::mycall) {
 218
 219                                 # strip leading and trailing stuff
 220                                 my $text = unpad($field[3]);
 221                                 my $target;
 222                                 my $to = 'To ';
 223                                 my @list;
 224
 225                                 if ($field[4] eq '*') { # sysops
 226                                         $target = "SYSOP";
 227                                         @list = map { $_->priv >= 5 ? $_ : () } get_all_users();
 228                                 } elsif ($field[4] gt ' ') { # speciality list handling
 229                                         my ($name) = split /\./, $field[4];
 230                                         $target = "$name"; # put the rest in later (if bothered)
 231                                 }
 232
 233                                 if ($field[6] eq '1') {
 234                                         $target = "WX";
 235                                         $to = '';
 236                                 }
 237                                 $target = "All" if !$target;
 238
 239                                 if (@list > 0) {
 240                                         broadcast_list("$to$target de $field[1]: $text", 'ann', undef, @list);
 241                                 } else {
 242                                         broadcast_users("$target de $field[1]: $text", 'ann', undef);
 243                                 }
 244                                 Log('ann', $target, $field[1], $text);
 245
 246                                 return if $field[2] eq $main::mycall; # it's routed to me
 247                         } else {
 248                                 route($field[2], $line);
 249                                 return;                 # only on a routed one
 250                         }
 251
 252                         last SWITCH;
 253                 }
 254
 255                 if ($pcno == 13) {
 256                         last SWITCH;
 257                 }
 258                 if ($pcno == 14) {
 259                         last SWITCH;
 260                 }
 261                 if ($pcno == 15) {
 262                         last SWITCH;
 263                 }
 264
 265                 if ($pcno == 16) {              # add a user
 266                         my $node = DXCluster->get_exact($field[1]);
 267                         last SWITCH if !$node; # ignore if havn't seen a PC19 for this one yet
 268                         last SWITCH unless $node->isa('DXNode');
 269                         my $i;
 270
 271
 272                         for ($i = 2; $i < $#field; $i++) {
 273                                 my ($call, $confmode, $here) = $field[$i] =~ /^(\S+) (\S) (\d)/o;
 274                                 next if length $call < 3 || length $call > 8;
 275                                 next if !$confmode;
 276                                 $call = uc $call;
 277                                 next if DXCluster->get_exact($call); # we already have this (loop?)
 278
 279                                 $confmode = $confmode eq '*';
 280                                 DXNodeuser->new($self, $node, $call, $confmode, $here);
 281
 282                                 # add this station to the user database, if required
 283                                 $call =~ s/-\d+$//o;        # remove ssid for users
 284                                 my $user = DXUser->get_current($call);
 285                                 $user = DXUser->new($call) if !$user;
 286                                 $user->homenode($node->call) if !$user->homenode;
 287                                 $user->node($node->call);
 288                                 $user->lastin($main::systime);
 289                                 $user->put;
 290                         }
 291
 292                         # queue up any messages (look for privates only)
 293                         DXMsg::queue_msg(1) if $self->state eq 'normal';
 294                         last SWITCH;
 295                 }
 296
 297                 if ($pcno == 17) {              # remove a user
 298
 299                         my $ref = DXCluster->get_exact($field[1]);
 300                         $ref->del() if $ref;
 301                         last SWITCH;
 302                 }
 303
 304                 if ($pcno == 18) {              # link request
 305                         $self->send_local_config();
 306                         $self->send(pc20());
 307                         $self->state('init');
 308                         return;             # we don't pass these on
 309                 }
 310
 311                 if ($pcno == 19) {              # incoming cluster list
 312                         my $i;
 313                         for ($i = 1; $i < $#field-1; $i += 4) {
 314                                 my $here = $field[$i];
 315                                 my $call = uc $field[$i+1];
 316                                 my $confmode = $field[$i+2] eq '*';
 317                                 my $ver = $field[$i+3];
 318
 319                                 # now check the call over
 320                                 next if DXCluster->get_exact($call); # we already have this
 321
 322                                 # check for sane parameters
 323                                 next if $ver < 5000; # only works with version 5 software
 324                                 next if length $call < 3; # min 3 letter callsigns
 325                                 DXNode->new($self, $call, $confmode, $here, $ver);
 326
 327                                 # unbusy and stop and outgoing mail (ie if somehow we receive another PC19 without a disconnect)
 328                                 my $mref = DXMsg::get_busy($call);
 329                                 $mref->stop_msg($self) if $mref;
 330
 331                                 # add this station to the user database, if required (don't remove SSID from nodes)
 332                                 my $user = DXUser->get_current($call);
 333                                 if (!$user) {
 334                                         $user = DXUser->new($call);
 335                                         $user->sort('A');
 336                                         $user->priv(1);                   # I have relented and defaulted nodes
 337                                         $self->{priv} = 1;                # to user RCMDs allowed
 338                                         $user->homenode($call);
 339                                         $user->node($call);
 340                                 }
 341                                 $user->lastin($main::systime);
 342                                 $user->put;
 343                         }
 344
 345                         # queue up any messages
 346                         DXMsg::queue_msg(0) if $self->state eq 'normal';
 347                         last SWITCH;
 348                 }
 349
 350                 if ($pcno == 20) {              # send local configuration
 351                         $self->send_local_config();
 352                         $self->send(pc22());
 353                         $self->state('normal');
 354
 355                         # queue mail
 356                         DXMsg::queue_msg(0);
 357                         return;
 358                 }
 359
 360                 if ($pcno == 21) {              # delete a cluster from the list
 361                         my $call = uc $field[1];
 362                         if ($call ne $main::mycall) { # don't allow malicious buggers to disconnect me!
 363                                 my $ref = DXCluster->get_exact($call);
 364                                 $ref->del() if $ref;
 365                         }
 366                         last SWITCH;
 367                 }
 368
 369                 if ($pcno == 22) {
 370                         $self->state('normal');
 371
 372                         # queue mail
 373                         DXMsg::queue_msg(0);
 374                         return;
 375                 }
 376
 377                 if ($pcno == 23 || $pcno == 27) { # WWV info
 378                         # do some de-duping
 379                         my $d = cltounix($field[1], sprintf("%02d18Z", $field[2]));
 380                         my $sfi = unpad($field[3]);
 381                         my $k = unpad($field[4]);
 382                         my $i = unpad($field[5]);
 383                         my $dupkey = "$d.$sfi$k$i";
 384                         if ($wwvdup{$dupkey}) {
 385                                 dbg('chan', "Dup WWV Spot ignored\n");
 386                                 return;
 387                         }
 388                         if ($d > $main::systime + 900 || $field[2] < 0 || $field[2] > 23) {
 389                                 dbg('chan', "WWV Date ($field[1] $field[2]) out of range");
 390                                 return;
 391                         }
 392                         $wwvdup{$dupkey} = $d;
 393                         $field[6] =~ s/-\d+$//o;            # remove spotter's ssid
 394
 395                         my $wwv = Geomag::update($d, $field[2], $sfi, $k, $i, @field[6..$#field]);
 396
 397                         my $r;
 398                         eval {
 399                                 $r = Local::wwv2($self, $field[1], $field[2], $sfi, $k, $i, @field[6..$#field]);
 400                         };
 401                         dbg('local', "Local::wwv2 error $@") if $@;
 402                         return if $r;
 403
 404                         # DON'T be silly and send on PC27s!
 405                         return if $pcno == 27;
 406
 407                         # broadcast to the eager users
 408                         broadcast_users("WWV de $field[7] <$field[2]>:   SFI=$sfi, K=$k, A=$i, $field[6]", 'wwv', $wwv );
 409                         last SWITCH;
 410                 }
 411
 412                 if ($pcno == 24) {              # set here status
 413                         my $call = uc $field[1];
 414                         my $ref = DXCluster->get_exact($call);
 415                         $ref->here($field[2]) if $ref;
 416                         last SWITCH;
 417                 }
 418
 419                 if ($pcno == 25) {      # merge request
 420                         unless ($field[1] eq $main::mycall) {
 421                                 dbg('chan', "merge request to $field[1] from $field[2] ignored");
 422                                 return;
 423                         }
 424
 425                         Log('DXProt', "Merge request for $field[3] spots and $field[4] WWV from $field[1]");
 426
 427                         # spots
 428                         if ($field[3] > 0) {
 429                                 my @in = reverse Spot::search(1, undef, undef, 0, $field[3]-1);
 430                                 my $in;
 431                                 foreach $in (@in) {
 432                                         $self->send(pc26(@{$in}[0..4], $in->[7]));
 433                                 }
 434                         }
 435
 436                         # wwv
 437                         if ($field[4] > 0) {
 438                                 my @in = reverse Geomag::search(0, $field[4], time, 1);
 439                                 my $in;
 440                                 foreach $in (@in) {
 441                                         $self->send(pc27(@{$in}));
 442                                 }
 443                         }
 444                         return;
 445                 }
 446
 447                 if (($pcno >= 28 && $pcno <= 33) || $pcno == 40 || $pcno == 42 || $pcno == 49) { # mail/file handling
 448                         DXMsg::process($self, $line);
 449                         return;
 450                 }
 451
 452                 if ($pcno == 34 || $pcno == 36) { # remote commands (incoming)
 453                         if ($field[1] eq $main::mycall) {
 454                                 my $ref = DXUser->get_current($field[2]);
 455                                 Log('rcmd', 'in', $ref->{priv}, $field[2], $field[3]);
 456                                 unless ($field[3] =~ /rcmd/i) {    # not allowed to relay RCMDS!
 457                                         if ($ref->{priv}) {     # you have to have SOME privilege, the commands have further filtering
 458                                                 $self->{remotecmd} = 1; # for the benefit of any command that needs to know
 459                                                 my @in = (DXCommandmode::run_cmd($self, $field[3]));
 460                                                 for (@in) {
 461                                                         s/\s*$//og;
 462                                                         $self->send(pc35($main::mycall, $field[2], "$main::mycall:$_"));
 463                                                         Log('rcmd', 'out', $field[2], $_);
 464                                                 }
 465                                                 delete $self->{remotecmd};
 466                                         }
 467                                 } else {
 468                                         $self->send(pc35($main::mycall, $field[2], "$main::mycall:Tut tut tut...!"));
 469                                 }
 470                         } else {
 471                                 route($field[1], $line);
 472                         }
 473                         return;
 474                 }
 475
 476                 if ($pcno == 35) {              # remote command replies
 477                         if ($field[1] eq $main::mycall) {
 478                                 my $s = $rcmds{$field[2]};
 479                                 if ($s) {
 480                                         my $dxchan = DXChannel->get($s->{call});
 481                                         $dxchan->send($field[3]) if $dxchan;
 482                                         delete $rcmds{$field[2]} if !$dxchan;
 483                                 }
 484                         } else {
 485                                 route($field[1], $line);
 486                         }
 487                         return;
 488                 }
 489
 490                 if ($pcno == 37) {
 491                         last SWITCH;
 492                 }
 493
 494                 if ($pcno == 38) {              # node connected list from neighbour
 495                         return;
 496                 }
 497
 498                 if ($pcno == 39) {              # incoming disconnect
 499                         $self->disconnect();
 500                         return;
 501                 }
 502
 503                 if ($pcno == 41) {              # user info
 504                         # add this station to the user database, if required
 505                         my $user = DXUser->get_current($field[1]);
 506                         if (!$user) {
 507                                 # then try without an SSID
 508                                 $field[1] =~ s/-\d+$//o;
 509                                 $user = DXUser->get_current($field[1]);
 510                         }
 511                         $user = DXUser->new($field[1]) if !$user;
 512
 513                         if ($field[2] == 1) {
 514                                 $user->name($field[3]);
 515                         } elsif ($field[2] == 2) {
 516                                 $user->qth($field[3]);
 517                         } elsif ($field[2] == 3) {
 518                                 my ($lat, $long) = DXBearing::stoll($field[3]);
 519                                 $user->lat($lat);
 520                                 $user->long($long);
 521                         } elsif ($field[2] == 4) {
 522                                 $user->homenode($field[3]);
 523                         }
 524                         $user->put;
 525                         last SWITCH;
 526                 }
 527                 if ($pcno == 43) {
 528                         last SWITCH;
 529                 }
 530                 if ($pcno == 44) {
 531                         last SWITCH;
 532                 }
 533                 if ($pcno == 45) {
 534                         last SWITCH;
 535                 }
 536                 if ($pcno == 46) {
 537                         last SWITCH;
 538                 }
 539                 if ($pcno == 47) {
 540                         last SWITCH;
 541                 }
 542                 if ($pcno == 48) {
 543                         last SWITCH;
 544                 }
 545
 546                 if ($pcno == 50) {              # keep alive/user list
 547                         my $ref = DXCluster->get_exact($field[1]);
 548                         $ref->update_users($field[2]) if $ref;
 549                         last SWITCH;
 550                 }
 551
 552                 if ($pcno == 51) {              # incoming ping requests/answers
 553
 554                         # is it for us?
 555                         if ($field[1] eq $main::mycall) {
 556                                 my $flag = $field[3];
 557                                 if ($flag == 1) {
 558                                         $self->send(pc51($field[2], $field[1], '0'));
 559                                 } else {
 560                                         # it's a reply, look in the ping list for this one
 561                                         my $ref = $pings{$field[2]};
 562                                         if ($ref) {
 563                                                 my $r = shift @$ref;
 564                                                 my $dxchan = DXChannel->get($r->{call});
 565                                                 $dxchan->send($dxchan->msg('pingi', $field[2], atime($main::systime), $main::systime - $r->{t})) if $dxchan;
 566                                         }
 567                                 }
 568
 569                         } else {
 570                                 # route down an appropriate thingy
 571                                 route($field[1], $line);
 572                         }
 573                         return;
 574                 }
 575         }
 576
 577          # if get here then rebroadcast the thing with its Hop count decremented (if
 578          # there is one). If it has a hop count and it decrements to zero then don't
 579          # rebroadcast it.
 580          #
 581          # NOTE - don't arrive here UNLESS YOU WANT this lump of protocol to be
 582          #        REBROADCAST!!!!
 583          #
 584
 585         if (!$self->{isolate}) {
 586                 broadcast_ak1a($line, $self); # send it to everyone but me
 587         }
 588 }
 589
 590 #
 591 # This is called from inside the main cluster processing loop and is used
 592 # for despatching commands that are doing some long processing job
 593 #
 594 sub process
 595 {
 596         my $t = time;
 597         my @dxchan = DXChannel->get_all();
 598         my $dxchan;
 599
 600         foreach $dxchan (@dxchan) {
 601                 next unless $dxchan->is_ak1a();
 602                 next if $dxchan == $me;
 603
 604                 # send a pc50 out on this channel
 605                 if ($t >= $dxchan->pc50_t + $DXProt::pc50_interval) {
 606                         $dxchan->send(pc50());
 607                         $dxchan->pc50_t($t);
 608                 }
 609         }
 610
 611         my $key;
 612         my $val;
 613         my $cutoff;
 614         if ($main::systime - 3600 > $last_hour) {
 615                 $cutoff  = $main::systime - $pc11_dup_age;
 616                 while (($key, $val) = each %spotdup) {
 617                         delete $spotdup{$key} if $val < $cutoff;
 618                 }
 619                 $cutoff = $main::systime - $pc23_dup_age;
 620                 while (($key, $val) = each %wwvdup) {
 621                         delete $wwvdup{$key} if $val < $cutoff;
 622                 }
 623                 $last_hour = $main::systime;
 624         }
 625 }
 626
 627 #
 628 # finish up a pc context
 629 #
 630 sub finish
 631 {
 632         my $self = shift;
 633         my $call = $self->call;
 634         my $ref = DXCluster->get_exact($call);
 635
 636         # unbusy and stop and outgoing mail
 637         my $mref = DXMsg::get_busy($call);
 638         $mref->stop_msg($self) if $mref;
 639
 640         # broadcast to all other nodes that all the nodes connected to via me are gone
 641         my @gonenodes = map { $_->dxchan == $self ? $_ : () } DXNode::get_all();
 642         my $node;
 643
 644         foreach $node (@gonenodes) {
 645                 next if $node->call eq $call;
 646                 broadcast_ak1a(pc21($node->call, 'Gone') , $self) unless $self->{isolate};
 647                 $node->del();
 648         }
 649
 650         # remove outstanding pings
 651         delete $pings{$call};
 652
 653         # now broadcast to all other ak1a nodes that I have gone
 654         broadcast_ak1a(pc21($call, 'Gone.'), $self);
 655
 656         Log('DXProt', $call . " Disconnected");
 657         $ref->del() if $ref;
 658 }
 659
 660 #
 661 # some active measures
 662 #
 663
 664 sub send_local_config
 665 {
 666         my $self = shift;
 667         my $n;
 668         my @nodes;
 669
 670         # send our nodes
 671         if ($self->{isolate}) {
 672                 @nodes = (DXCluster->get_exact($main::mycall));
 673         } else {
 674                 # create a list of all the nodes that are not connected to this connection
 675                 @nodes = DXNode::get_all();
 676                 @nodes = grep { $_->dxchan != $self } @nodes;
 677         }
 678
 679         my @s = $me->pc19(@nodes);
 680         for (@s) {
 681                 my $routeit = adjust_hops($self, $_);
 682                 $self->send($routeit) if $routeit;
 683         }
 684
 685         # get all the users connected on the above nodes and send them out
 686         foreach $n (@nodes) {
 687                 my @users = values %{$n->list};
 688                 my @s = pc16($n, @users);
 689                 for (@s) {
 690                         my $routeit = adjust_hops($self, $_);
 691                         $self->send($routeit) if $routeit;
 692                 }
 693         }
 694 }
 695
 696 #
 697 # route a message down an appropriate interface for a callsign
 698 #
 699 # is called route(to, pcline);
 700 #
 701 sub route
 702 {
 703         my ($call, $line) = @_;
 704         my $cl = DXCluster->get_exact($call);
 705         if ($cl) {
 706                 my $hops;
 707                 my $dxchan = $cl->{dxchan};
 708                 if ($dxchan) {
 709                         my $routeit = adjust_hops($dxchan, $line);   # adjust its hop count by node name
 710                         if ($routeit) {
 711                                 $dxchan->send($routeit) if $dxchan;
 712                         }
 713                 }
 714         }
 715 }
 716
 717 # broadcast a message to all clusters [except those mentioned after buffer]
 718 sub broadcast_ak1a
 719 {
 720         my $s = shift;                          # the line to be rebroadcast
 721         my @except = @_;                        # to all channels EXCEPT these (dxchannel refs)
 722         my @dxchan = get_all_ak1a();
 723         my $dxchan;
 724
 725         # send it if it isn't the except list and isn't isolated and still has a hop count
 726         foreach $dxchan (@dxchan) {
 727                 next if grep $dxchan == $_, @except;
 728                 my $routeit = adjust_hops($dxchan, $s);      # adjust its hop count by node name
 729                 $dxchan->send($routeit) unless $dxchan->{isolate} || !$routeit;
 730         }
 731 }
 732
 733 # broadcast to all users
 734 # storing the spot or whatever until it is in a state to receive it
 735 sub broadcast_users
 736 {
 737         my $s = shift;                          # the line to be rebroadcast
 738         my $sort = shift;           # the type of transmission
 739         my $fref = shift;           # a reference to an object to filter on
 740         my @except = @_;                        # to all channels EXCEPT these (dxchannel refs)
 741         my @dxchan = get_all_users();
 742         my $dxchan;
 743         my @out;
 744
 745         foreach $dxchan (@dxchan) {
 746                 next if grep $dxchan == $_, @except;
 747                 push @out, $dxchan;
 748         }
 749         broadcast_list($s, $sort, $fref, @out);
 750 }
 751
 752 # broadcast to a list of users
 753 sub broadcast_list
 754 {
 755         my $s = shift;
 756         my $sort = shift;
 757         my $fref = shift;
 758         my $dxchan;
 759
 760         foreach $dxchan (@_) {
 761
 762                 next if $sort eq 'dx' && !$dxchan->{dx};
 763                 next if $sort eq 'ann' && !$dxchan->{ann};
 764                 next if $sort eq 'wwv' && !$dxchan->{wwv};
 765                 next if $sort eq 'wx' && !$dxchan->{wx};
 766
 767                 $s =~ s/\a//og unless $dxchan->{beep};
 768                 if ($dxchan->{state} eq 'prompt' || $dxchan->{state} eq 'convers') {
 769                         $dxchan->send($s);
 770                 } else {
 771                         $dxchan->delay($s);
 772                 }
 773         }
 774 }
 775
 776 #
 777 # gimme all the ak1a nodes
 778 #
 779 sub get_all_ak1a
 780 {
 781         my @list = DXChannel->get_all();
 782         my $ref;
 783         my @out;
 784         foreach $ref (@list) {
 785                 push @out, $ref if $ref->is_ak1a;
 786         }
 787         return @out;
 788 }
 789
 790 # return a list of all users
 791 sub get_all_users
 792 {
 793         my @list = DXChannel->get_all();
 794         my $ref;
 795         my @out;
 796         foreach $ref (@list) {
 797                 push @out, $ref if $ref->is_user;
 798         }
 799         return @out;
 800 }
 801
 802 # return a list of all user callsigns
 803 sub get_all_user_calls
 804 {
 805         my @list = DXChannel->get_all();
 806         my $ref;
 807         my @out;
 808         foreach $ref (@list) {
 809                 push @out, $ref->call if $ref->is_user;
 810         }
 811         return @out;
 812 }
 813
 814 #
 815 # obtain the hops from the list for this callsign and pc no
 816 #
 817
 818 sub get_hops
 819 {
 820         my ($pcno) = @_;
 821         my $hops = $DXProt::hopcount{$pcno};
 822         $hops = $DXProt::def_hopcount if !$hops;
 823         return "H$hops";
 824 }
 825
 826 #
 827 # adjust the hop count on a per node basis using the user loadable
 828 # hop table if available or else decrement an existing one
 829 #
 830
 831 sub adjust_hops
 832 {
 833         my $self = shift;
 834         my $s = shift;
 835         my $call = $self->{call};
 836         my $hops;
 837
 838         if (($hops) = $s =~ /\^H(\d+)\^~?$/o) {
 839                 my ($pcno) = $s =~ /^PC(\d\d)/o;
 840                 confess "$call called adjust_hops with '$s'" unless $pcno;
 841                 my $ref = $nodehops{$call} if %nodehops;
 842                 if ($ref) {
 843                         my $newhops = $ref->{$pcno};
 844                         return "" if defined $newhops && $newhops == 0;
 845                         $newhops = $ref->{default} unless $newhops;
 846                         return "" if defined $newhops && $newhops == 0;
 847                         $newhops = $hops if !$newhops;
 848                         $s =~ s/\^H(\d+)(\^~?)$/\^H$newhops$2/ if $newhops;
 849                 } else {
 850                         # simply decrement it
 851                         $hops--;
 852                         return "" if !$hops;
 853                         $s =~ s/\^H(\d+)(\^~?)$/\^H$hops$2/ if $hops;
 854                 }
 855         }
 856         return $s;
 857 }
 858
 859 #
 860 # load hop tables
 861 #
 862 sub load_hops
 863 {
 864         my $self = shift;
 865         return $self->msg('lh1') unless -e "$main::data/hop_table.pl";
 866         do "$main::data/hop_table.pl";
 867         return $@ if $@;
 868         return 0;
 869 }
 870
 871 # remove leading and trailing spaces from an input string
 872 sub unpad
 873 {
 874         my $s = shift;
 875         $s =~ s/^\s+|\s+$//;
 876         return $s;
 877 }
 878
 879 # add a ping request to the ping queues
 880 sub addping
 881 {
 882         my ($from, $to) = @_;
 883         my $ref = $pings{$to};
 884         $ref = $pings{$to} = [] if !$ref;
 885         my $r = {};
 886         $r->{call} = $from;
 887         $r->{t} = $main::systime;
 888         route($to, pc51($to, $main::mycall, 1));
 889         push @$ref, $r;
 890 }
 891
 892 # add a rcmd request to the rcmd queues
 893 sub addrcmd
 894 {
 895         my ($from, $to, $cmd) = @_;
 896         my $r = {};
 897         $r->{call} = $from;
 898         $r->{t} = $main::systime;
 899         $r->{cmd} = $cmd;
 900         route($to, pc34($main::mycall, $to, $cmd));
 901         $rcmds{$to} = $r;
 902 }
 903 1;
 904 __END__