perl/DXCommandmode.pm

   1 #!/usr/bin/perl
   2 #
   3 # This module impliments the user facing command mode for a dx cluster
   4 #
   5 # Copyright (c) 1998 Dirk Koopman G1TLH
   6 #
   7 #
   8 #
   9
  10 package DXCommandmode;
  11
  12 #use POSIX;
  13
  14 @ISA = qw(DXChannel);
  15
  16 require 5.10.1;
  17
  18 use POSIX qw(:math_h);
  19 use DXUtil;
  20 use DXChannel;
  21 use DXUser;
  22 use DXVars;
  23 use DXDebug;
  24 use DXM;
  25 use DXLog;
  26 use DXLogPrint;
  27 use DXBearing;
  28 use CmdAlias;
  29 use Filter;
  30 use Minimuf;
  31 use DXDb;
  32 use AnnTalk;
  33 use WCY;
  34 use Sun;
  35 use Internet;
  36 use Script;
  37 use QSL;
  38 use DB_File;
  39 use VE7CC;
  40 use DXXml;
  41 use AsyncMsg;
  42 use JSON;
  43 use Time::HiRes qw(gettimeofday tv_interval);
  44
  45 use Mojo::IOLoop;
  46 use Mojo::IOLoop::Subprocess;
  47 use Mojo::UserAgent;
  48
  49 use strict;
  50 use vars qw(%Cache %cmd_cache $errstr %aliases $scriptbase %nothereslug
  51         $maxbadcount $msgpolltime $default_pagelth $cmdimportdir $users $maxusers);
  52
  53 %Cache = ();                                    # cache of dynamically loaded routine's mod times
  54 %cmd_cache = ();                                # cache of short names
  55 $errstr = ();                                   # error string from eval
  56 %aliases = ();                                  # aliases for (parts of) commands
  57 $scriptbase = "$main::root/scripts"; # the place where all users start scripts go
  58 $maxbadcount = 3;                               # no of bad words allowed before disconnection
  59 $msgpolltime = 3600;                    # the time between polls for new messages
  60 $cmdimportdir = "$main::root/cmd_import"; # the base directory for importing command scripts
  61                                           # this does not exist as default, you need to create it manually
  62 $users = 0;                                       # no of users on this node currently
  63 $maxusers = 0;                            # max no users on this node for this run
  64
  65 #
  66 # obtain a new connection this is derived from dxchannel
  67 #
  68
  69 sub new
  70 {
  71         my $self = DXChannel::alloc(@_);
  72
  73         # routing, this must go out here to prevent race condx
  74         my $pkg = shift;
  75         my $call = shift;
  76 #       my @rout = $main::routeroot->add_user($call, Route::here(1));
  77         DXProt::_add_thingy($main::routeroot, [$call, 0, 0, 1, undef, undef, $self->hostname], );
  78
  79         # ALWAYS output the user
  80         my $ref = Route::User::get($call);
  81         if ($ref) {
  82                 $main::me->route_pc16($main::mycall, undef, $main::routeroot, $ref);
  83                 $main::me->route_pc92a($main::mycall, undef, $main::routeroot, $ref) unless $DXProt::pc92_slug_changes;
  84         }
  85
  86         return $self;
  87 }
  88
  89 # this is how a a connection starts, you get a hello message and the motd with
  90 # possibly some other messages asking you to set various things up if you are
  91 # new (or nearly new and slacking) user.
  92
  93 sub start
  94 {
  95         my ($self, $line, $sort) = @_;
  96         my $user = $self->{user};
  97         my $call = $self->{call};
  98         my $name = $user->{name};
  99
 100         # log it
 101         my $host = $self->{conn}->peerhost;
 102         $host ||= "AGW Port #$self->{conn}->{agwport}" if exists $self->{conn}->{agwport};
 103         $host ||= "unknown";
 104         $self->{hostname} = $host;
 105
 106         $self->{name} = $name ? $name : $call;
 107         $self->send($self->msg('l2',$self->{name}));
 108         $self->state('prompt');         # a bit of room for further expansion, passwords etc
 109         $self->{priv} = $user->priv || 0;
 110         $self->{lang} = $user->lang || $main::lang || 'en';
 111         my $pagelth = $user->pagelth;
 112         $pagelth = $default_pagelth unless defined $pagelth;
 113         $self->{pagelth} = $pagelth;
 114         ($self->{width}) = $line =~ /width=(\d+)/; $line =~ s/\s*width=\d+\s*//;
 115         if ($line =~ /host=/) {
 116                 my ($h) = $line =~ /host=(\d+\.\d+\.\d+\.\d+)/;
 117                 $line =~ s/\s*host=\d+\.\d+\.\d+\.\d+// if $h;
 118                 unless ($h) {
 119                         ($h) = $line =~ /host=([\da..fA..F:]+)/;
 120                         $line =~ s/\s*host=[\da..fA..F:]+// if $h;
 121                 }
 122                 $self->{hostname} = $h if $h;
 123         }
 124         $self->{width} = 80 unless $self->{width} && $self->{width} > 80;
 125         $self->{consort} = $line;       # save the connection type
 126
 127         LogDbg('DXCommand', "$call connected from $self->{hostname}");
 128
 129         # set some necessary flags on the user if they are connecting
 130         $self->{beep} = $user->wantbeep;
 131         $self->{ann} = $user->wantann;
 132         $self->{wwv} = $user->wantwwv;
 133         $self->{wcy} = $user->wantwcy;
 134         $self->{talk} = $user->wanttalk;
 135         $self->{wx} = $user->wantwx;
 136         $self->{dx} = $user->wantdx;
 137         $self->{logininfo} = $user->wantlogininfo;
 138         $self->{ann_talk} = $user->wantann_talk;
 139         $self->{here} = 1;
 140         $self->{prompt} = $user->prompt if $user->prompt;
 141         $self->{lastmsgpoll} = 0;
 142
 143         # sort out new dx spot stuff
 144         $user->wantdxcq(0) unless defined $user->{wantdxcq};
 145         $user->wantdxitu(0) unless defined $user->{wantdxitu};
 146         $user->wantusstate(0) unless defined $user->{wantusstate};
 147
 148         # sort out registration
 149         if ($main::reqreg == 1) {
 150                 $self->{registered} = $user->registered;
 151         } elsif ($main::reqreg == 2) {
 152                 $self->{registered} = !$user->registered;
 153         } else {
 154                 $self->{registered} = 1;
 155         }
 156
 157         # send the relevant MOTD
 158         $self->send_motd;
 159
 160         # sort out privilege reduction
 161         $self->{priv} = 0 unless $self->{hostname} eq '127.0.0.1' || $self->{hostname} eq '::1' || $self->conn->{usedpasswd};
 162
 163         # get the filters
 164         my $nossid = $call;
 165         $nossid =~ s/-\d+$//;
 166
 167         $self->{spotsfilter} = Filter::read_in('spots', $call, 0)
 168                 || Filter::read_in('spots', $nossid, 0)
 169                         || Filter::read_in('spots', 'user_default', 0);
 170         $self->{wwvfilter} = Filter::read_in('wwv', $call, 0)
 171                 || Filter::read_in('wwv', $nossid, 0)
 172                         || Filter::read_in('wwv', 'user_default', 0);
 173         $self->{wcyfilter} = Filter::read_in('wcy', $call, 0)
 174                 || Filter::read_in('wcy', $nossid, 0)
 175                         || Filter::read_in('wcy', 'user_default', 0);
 176         $self->{annfilter} = Filter::read_in('ann', $call, 0)
 177                 || Filter::read_in('ann', $nossid, 0)
 178                         || Filter::read_in('ann', 'user_default', 0) ;
 179
 180         # clean up qra locators
 181         my $qra = $user->qra;
 182         $qra = undef if ($qra && !DXBearing::is_qra($qra));
 183         unless ($qra) {
 184                 my $lat = $user->lat;
 185                 my $long = $user->long;
 186                 $user->qra(DXBearing::lltoqra($lat, $long)) if (defined $lat && defined $long);
 187         }
 188
 189         # decide on echo
 190         my $echo = $user->wantecho;
 191         unless ($echo) {
 192                 $self->send_now('E', "0");
 193                 $self->send($self->msg('echow'));
 194                 $self->conn->echo($echo) if $self->conn->can('echo');
 195         }
 196
 197         $self->tell_login('loginu');
 198         $self->tell_buddies('loginb');
 199
 200         # do we need to send a forward/opernam?
 201         my $lastoper = $user->lastoper || 0;
 202         my $homenode = $user->homenode || "";
 203         if ($homenode eq $main::mycall && $main::systime >= $lastoper + $DXUser::lastoperinterval) {
 204                 run_cmd($main::me, "forward/opernam $call");
 205                 $user->lastoper($main::systime + ((int rand(10)) * 86400));
 206         }
 207
 208         # run a script send the output to the punter
 209         my $script = new Script(lc $call) || new Script('user_default');
 210         $script->run($self) if $script;
 211
 212         # send cluster info
 213         my $info = Route::cluster();
 214         $self->send("Cluster:$info");
 215
 216         # send prompts for qth, name and things
 217         $self->send($self->msg('namee1')) if !$user->name;
 218         $self->send($self->msg('qthe1')) if !$user->qth;
 219         $self->send($self->msg('qll')) if !$user->qra || (!$user->lat && !$user->long);
 220         $self->send($self->msg('hnodee1')) if !$user->qth;
 221         $self->send($self->msg('m9')) if DXMsg::for_me($call);
 222
 223         # send out any buddy messages for other people that are online
 224         foreach my $call (@{$user->buddies}) {
 225                 my $ref = Route::User::get($call);
 226                 if ($ref) {
 227                         foreach my $node ($ref->parents) {
 228                                 $self->send($self->msg($node eq $main::mycall ? 'loginb' : 'loginbn', $call, $node));
 229                         }
 230                 }
 231         }
 232
 233         $self->lastmsgpoll($main::systime);
 234         $self->prompt;
 235 }
 236
 237 #
 238 # This is the normal command prompt driver
 239 #
 240
 241 sub normal
 242 {
 243         my $self = shift;
 244         my $cmdline = shift;
 245         my @ans;
 246
 247         # save this for them's that need it
 248         my $rawline = $cmdline;
 249
 250         # remove leading and trailing spaces
 251         $cmdline =~ s/^\s*(.*)\s*$/$1/;
 252
 253         if ($self->{state} eq 'page') {
 254                 my $i = $self->{pagelth};
 255                 my $ref = $self->{pagedata};
 256                 my $tot = @$ref;
 257
 258                 # abort if we get a line starting in with a
 259                 if ($cmdline =~ /^a/io) {
 260                         undef $ref;
 261                         $i = 0;
 262                 }
 263
 264                 # send a tranche of data
 265                 while ($i-- > 0 && @$ref) {
 266                         my $line = shift @$ref;
 267                         $line =~ s/\s+$//o;     # why am having to do this?
 268                         $self->send($line);
 269                 }
 270
 271                 # reset state if none or else chuck out an intermediate prompt
 272                 if ($ref && @$ref) {
 273                         $tot -= $self->{pagelth};
 274                         $self->send($self->msg('page', $tot));
 275                 } else {
 276                         $self->state('prompt');
 277                 }
 278         } elsif ($self->{state} eq 'sysop') {
 279                 my $passwd = $self->{user}->passwd;
 280                 if ($passwd) {
 281                         my @pw = grep {$_ !~ /\s/} split //, $passwd;
 282                         my @l = @{$self->{passwd}};
 283                         my $str = "$pw[$l[0]].*$pw[$l[1]].*$pw[$l[2]].*$pw[$l[3]].*$pw[$l[4]]";
 284                         if ($cmdline =~ /$str/) {
 285                                 $self->{priv} = $self->{user}->priv;
 286                         } else {
 287                                 $self->send($self->msg('sorry'));
 288                         }
 289                 } else {
 290                         $self->send($self->msg('sorry'));
 291                 }
 292                 $self->state('prompt');
 293         } elsif ($self->{state} eq 'passwd') {
 294                 my $passwd = $self->{user}->passwd;
 295                 if ($passwd && $cmdline eq $passwd) {
 296                         $self->send($self->msg('pw1'));
 297                         $self->state('passwd1');
 298                 } else {
 299                         $self->conn->{echo} = $self->conn->{decho};
 300                         delete $self->conn->{decho};
 301                         $self->send($self->msg('sorry'));
 302                         $self->state('prompt');
 303                 }
 304         } elsif ($self->{state} eq 'passwd1') {
 305                 $self->{passwd} = $cmdline;
 306                 $self->send($self->msg('pw2'));
 307                 $self->state('passwd2');
 308         } elsif ($self->{state} eq 'passwd2') {
 309                 if ($cmdline eq $self->{passwd}) {
 310                         $self->{user}->passwd($cmdline);
 311                         $self->send($self->msg('pw3'));
 312                 } else {
 313                         $self->send($self->msg('pw4'));
 314                 }
 315                 $self->conn->{echo} = $self->conn->{decho};
 316                 delete $self->conn->{decho};
 317                 $self->state('prompt');
 318         } elsif ($self->{state} eq 'talk' || $self->{state} eq 'chat') {
 319                 if ($cmdline =~ m{^(?:/EX|/ABORT)}i) {
 320                         for (@{$self->{talklist}}) {
 321                                 if ($self->{state} eq 'talk') {
 322                                         $self->send_talks($_,  $self->msg('talkend'));
 323                                 } else {
 324                                         $self->local_send('C', $self->msg('chatend', $_));
 325                                 }
 326                         }
 327                         $self->state('prompt');
 328                         delete $self->{talklist};
 329                 } elsif ($cmdline =~ m|^/+\w+|) {
 330                         $cmdline =~ s|^/||;
 331                         my $sendit = $cmdline =~ s|^/+||;
 332                         my @in = $self->run_cmd($cmdline);
 333                         $self->send_ans(@in);
 334                         if ($sendit && $self->{talklist} && @{$self->{talklist}}) {
 335                                 foreach my $l (@in) {
 336                                         my @bad;
 337                                         if (@bad = BadWords::check($l)) {
 338                                                 $self->badcount(($self->badcount||0) + @bad);
 339                                                 LogDbg('DXCommand', "$self->{call} swore: $l with words:" . join(',', @bad) . ")");
 340                                         } else {
 341                                                 for (@{$self->{talklist}}) {
 342                                                         if ($self->{state} eq 'talk') {
 343                                                                 $self->send_talks($_, $l);
 344                                                         } else {
 345                                                                 send_chats($self, $_, $l)
 346                                                         }
 347                                                 }
 348                                         }
 349                                 }
 350                         }
 351                         $self->send($self->{state} eq 'talk' ? $self->talk_prompt : $self->chat_prompt);
 352                 } elsif ($self->{talklist} && @{$self->{talklist}}) {
 353                         # send what has been said to whoever is in this person's talk list
 354                         my @bad;
 355                         if (@bad = BadWords::check($cmdline)) {
 356                                 $self->badcount(($self->badcount||0) + @bad);
 357                                 LogDbg('DXCommand', "$self->{call} swore: $cmdline with words:" . join(',', @bad) . ")");
 358                         } else {
 359                                 for (@{$self->{talklist}}) {
 360                                         if ($self->{state} eq 'talk') {
 361                                                 $self->send_talks($_, $rawline);
 362                                         } else {
 363                                                 send_chats($self, $_, $rawline);
 364                                         }
 365                                 }
 366                         }
 367                         $self->send($self->talk_prompt) if $self->{state} eq 'talk';
 368                         $self->send($self->chat_prompt) if $self->{state} eq 'chat';
 369                 } else {
 370                         # for safety
 371                         $self->state('prompt');
 372                 }
 373         } elsif (my $func = $self->{func}) {
 374                 no strict 'refs';
 375                 my @ans;
 376                 if (ref $self->{edit}) {
 377                         eval { @ans = $self->{edit}->$func($self, $rawline)};
 378                 } else {
 379                         eval {  @ans = &{$self->{func}}($self, $rawline) };
 380                 }
 381                 if ($@) {
 382                         $self->send_ans("Syserr: on stored func $self->{func}", $@);
 383                         delete $self->{func};
 384                         $self->state('prompt');
 385                         undef $@;
 386                 }
 387                 $self->send_ans(@ans);
 388         } else {
 389                 $self->send_ans(run_cmd($self, $cmdline));
 390         }
 391
 392         # check for excessive swearing
 393         if ($self->{badcount} && $self->{badcount} >= $maxbadcount) {
 394                 LogDbg('DXCommand', "$self->{call} logged out for excessive swearing");
 395                 $self->disconnect;
 396                 return;
 397         }
 398
 399         # send a prompt only if we are in a prompt state
 400         $self->prompt() if $self->{state} =~ /^prompt/o;
 401 }
 402
 403 # send out the talk messages taking into account vias and connectivity
 404 sub send_talks
 405 {
 406         my ($self, $ent, $line) = @_;
 407
 408         my ($to, $via) = $ent =~ /(\S+)>(\S+)/;
 409         $to = $ent unless $to;
 410         my $call = $via && $via ne '*' ? $via : $to;
 411         my $clref = Route::get($call);
 412         my $dxchan = $clref->dxchan if $clref;
 413         if ($dxchan) {
 414                 $dxchan->talk($self->{call}, $to, undef, $line);
 415         } else {
 416                 $self->send($self->msg('disc2', $via ? $via : $to));
 417                 my @l = grep { $_ ne $ent } @{$self->{talklist}};
 418                 if (@l) {
 419                         $self->{talklist} = \@l;
 420                 } else {
 421                         delete $self->{talklist};
 422                         $self->state('prompt');
 423                 }
 424         }
 425 }
 426
 427 sub send_chats
 428 {
 429         my $self = shift;
 430         my $target = shift;
 431         my $text = shift;
 432
 433         my $msgid = DXProt::nextchatmsgid();
 434         $text = "#$msgid $text";
 435         $main::me->normal(DXProt::pc93($target, $self->{call}, undef, $text));
 436 }
 437
 438 sub special_prompt
 439 {
 440         my $self = shift;
 441         my $prompt = shift;
 442         my @call;
 443         for (@{$self->{talklist}}) {
 444                 my ($to, $via) = /(\S+)>(\S+)/;
 445                 $to = $_ unless $to;
 446                 push @call, $to;
 447         }
 448         return $self->msg($prompt, join(',', @call));
 449 }
 450
 451 sub talk_prompt
 452 {
 453         my $self = shift;
 454         return $self->special_prompt('talkprompt');
 455 }
 456
 457 sub chat_prompt
 458 {
 459         my $self = shift;
 460         return $self->special_prompt('chatprompt');
 461 }
 462
 463 #
 464 # send a load of stuff to a command user with page prompting
 465 # and stuff
 466 #
 467
 468 sub send_ans
 469 {
 470         my $self = shift;
 471
 472         if ($self->{pagelth} && @_ > $self->{pagelth}) {
 473                 my $i;
 474                 for ($i = $self->{pagelth}; $i-- > 0; ) {
 475                         my $line = shift @_;
 476                         $line =~ s/\s+$//o;     # why am having to do this?
 477                         $self->send($line);
 478                 }
 479                 $self->{pagedata} =  [ @_ ];
 480                 $self->state('page');
 481                 $self->send($self->msg('page', scalar @_));
 482         } else {
 483                 for (@_) {
 484                         if (defined $_) {
 485                                 $self->send($_);
 486                         } else {
 487                                 $self->send('');
 488                         }
 489                 }
 490         }
 491 }
 492
 493 #
 494 # this is the thing that preps for running the command, it is done like this for the
 495 # benefit of remote command execution
 496 #
 497
 498 sub run_cmd
 499 {
 500         my $self = shift;
 501         my $user = $self->{user};
 502         my $call = $self->{call};
 503         my $cmdline = shift;
 504         my @ans;
 505
 506         return () if length $cmdline == 0;
 507
 508         # split the command line up into parts, the first part is the command
 509         my ($cmd, $args) = split /\s+/, $cmdline, 2;
 510         $args = "" unless defined $args;
 511
 512         if ($cmd) {
 513
 514                 # check cmd
 515                 if ($cmd =~ m|^/| || $cmd =~ m|[^-?\w/]|) {
 516                         LogDbg('DXCommand', "cmd: invalid characters in '$cmd'");
 517                         return $self->_error_out('e1');
 518                 }
 519
 520                 # strip out // on command only
 521                 $cmd =~ s|//|/|g;
 522
 523                 my ($path, $fcmd);
 524
 525                 dbg("cmd: $cmd") if isdbg('command');
 526
 527                 # alias it if possible
 528                 my $acmd = CmdAlias::get_cmd($cmd);
 529                 if ($acmd) {
 530                         ($cmd, $args) = split /\s+/, "$acmd $args", 2;
 531                         $args = "" unless defined $args;
 532                         dbg("cmd: aliased $cmd $args") if isdbg('command');
 533                 }
 534
 535                 # first expand out the entry to a command
 536                 ($path, $fcmd) = search($main::localcmd, $cmd, "pl");
 537                 ($path, $fcmd) = search($main::cmd, $cmd, "pl") unless $path && $fcmd;
 538
 539                 if ($path && $cmd) {
 540                         dbg("cmd: path $cmd cmd: $fcmd") if isdbg('command');
 541
 542                         my $package = find_cmd_name($path, $fcmd);
 543                         return ($@) if $@;
 544
 545                         if ($package && $self->can("${package}::handle")) {
 546                                 no strict 'refs';
 547                                 dbg("cmd: package $package") if isdbg('command');
 548                                 if (isdbg('progress')) {
 549                                         my $s = "CMD: '$cmd' by $call ip $self->{hostname}";
 550                                 }
 551                                 my $t0 = [gettimeofday];
 552                                 eval { @ans = &{"${package}::handle"}($self, $args) };
 553                                 if ($@) {
 554                                         dbgprintring(25);
 555                                         return (DXDebug::shortmess($@));
 556                                 }
 557                                 if (isdbg('progress')) {
 558                                         my $msecs = _diffms($t0);
 559                                         my $s = "CMD: '$cmd $args' by $call ip: $self->{hostname} ${msecs}mS";
 560                                         dbg($s);
 561                                 }
 562                         } else {
 563                                 dbg("cmd: $package not present") if isdbg('command');
 564                                 return $self->_error_out('e1');
 565                         }
 566                 } else {
 567                         dbg("cmd: $cmd not found") if isdbg('command');
 568                         return $self->_error_out('e1');
 569                 }
 570         }
 571
 572         my $ok = shift @ans;
 573         if ($ok) {
 574                 delete $self->{errors};
 575         } else {
 576                 if (++$self->{errors} > $DXChannel::maxerrors) {
 577                         $self->send($self->msg('e26'));
 578                         $self->disconnect;
 579                         return ();
 580                 }
 581         }
 582         return map {s/([^\s])\s+$/$1/; $_} @ans;
 583 }
 584
 585 #
 586 # This is called from inside the main cluster processing loop and is used
 587 # for despatching commands that are doing some long processing job
 588 #
 589 sub process
 590 {
 591         my $t = time;
 592         my @dxchan = DXChannel::get_all();
 593         my $dxchan;
 594
 595         $users = 0;
 596         foreach $dxchan (@dxchan) {
 597                 next unless $dxchan->is_user;
 598
 599                 # send a outstanding message prompt if required
 600                 if ($t >= $dxchan->lastmsgpoll + $msgpolltime) {
 601                         $dxchan->send($dxchan->msg('m9')) if DXMsg::for_me($dxchan->call);
 602                         $dxchan->lastmsgpoll($t);
 603                 }
 604
 605                 # send a prompt if no activity out on this channel
 606                 if ($t >= $dxchan->t + $main::user_interval) {
 607                         $dxchan->prompt() if $dxchan->{state} =~ /^prompt/o;
 608                         $dxchan->t($t);
 609                 }
 610                 ++$users;
 611                 $maxusers = $users if $users > $maxusers;
 612         }
 613
 614         while (my ($k, $v) = each %nothereslug) {
 615                 if ($main::systime >= $v + 300) {
 616                         delete $nothereslug{$k};
 617                 }
 618         }
 619
 620         import_cmd();
 621 }
 622
 623 #
 624 # finish up a user context
 625 #
 626 sub disconnect
 627 {
 628         my $self = shift;
 629         my $call = $self->call;
 630
 631         return if $self->{disconnecting}++;
 632
 633         delete $self->{senddbg};
 634
 635         my $uref = Route::User::get($call);
 636         my @rout;
 637         if ($uref) {
 638 #               @rout = $main::routeroot->del_user($uref);
 639                 @rout = DXProt::_del_thingy($main::routeroot, [$call, 0]);
 640
 641                 dbg("B/C PC17 on $main::mycall for: $call") if isdbg('route');
 642
 643                 # issue a pc17 to everybody interested
 644                 $main::me->route_pc17($main::mycall, undef, $main::routeroot, $uref);
 645                 $main::me->route_pc92d($main::mycall, undef, $main::routeroot, $uref) unless $DXProt::pc92_slug_changes;
 646         } else {
 647                 confess "trying to disconnect a non existant user $call";
 648         }
 649
 650         # I was the last node visited
 651     $self->user->node($main::mycall);
 652
 653         # send info to all logged in thingies
 654         $self->tell_login('logoutu');
 655         $self->tell_buddies('logoutb');
 656
 657         LogDbg('DXCommand', "$call disconnected");
 658
 659         $self->SUPER::disconnect;
 660 }
 661
 662 #
 663 # short cut to output a prompt
 664 #
 665
 666 sub prompt
 667 {
 668         my $self = shift;
 669
 670         return if $self->{gtk};         # 'cos prompts are not a concept that applies here
 671
 672         my $call = $self->call;
 673         my $date = cldate($main::systime);
 674         my $time = ztime($main::systime);
 675         my $prompt = $self->{prompt} || $self->msg('pr');
 676
 677         $call = "($call)" unless $self->here;
 678         $prompt =~ s/\%C/$call/g;
 679         $prompt =~ s/\%D/$date/g;
 680         $prompt =~ s/\%T/$time/g;
 681         $prompt =~ s/\%M/$main::mycall/g;
 682
 683         $self->send($prompt);
 684 }
 685
 686 # broadcast a message to all users [except those mentioned after buffer]
 687 sub broadcast
 688 {
 689         my $pkg = shift;                        # ignored
 690         my $s = shift;                          # the line to be rebroadcast
 691
 692     foreach my $dxchan (DXChannel::get_all()) {
 693                 next unless $dxchan->is_user; # only interested in user channels
 694                 next if grep $dxchan == $_, @_;
 695                 $dxchan->send($s);                      # send it
 696         }
 697 }
 698
 699 # gimme all the users
 700 sub get_all
 701 {
 702         goto &DXChannel::get_all_users;
 703 }
 704
 705 # run a script for this user
 706 sub run_script
 707 {
 708         my $self = shift;
 709         my $silent = shift || 0;
 710
 711 }
 712
 713 #
 714 # search for the command in the cache of short->long form commands
 715 #
 716
 717 sub search
 718 {
 719         my ($path, $short_cmd, $suffix) = @_;
 720         my ($apath, $acmd);
 721
 722         # commands are lower case
 723         $short_cmd = lc $short_cmd;
 724         dbg("command: $path $short_cmd\n") if isdbg('command');
 725
 726         # do some checking for funny characters
 727         return () if $short_cmd =~ /\/$/;
 728
 729         # return immediately if we have it
 730         ($apath, $acmd) = split ',', $cmd_cache{$short_cmd} if $cmd_cache{$short_cmd};
 731         if ($apath && $acmd) {
 732                 dbg("cached $short_cmd = ($apath, $acmd)\n") if isdbg('command');
 733                 return ($apath, $acmd);
 734         }
 735
 736         # if not guess
 737         my @parts = split '/', $short_cmd;
 738         my $dirfn;
 739         my $curdir = $path;
 740
 741         while (my $p = shift @parts) {
 742                 opendir(D, $curdir) or confess "can't open $curdir $!";
 743                 my @ls = readdir D;
 744                 closedir D;
 745
 746                 # if this isn't the last part
 747                 if (@parts) {
 748                         my $found;
 749                         foreach my $l (sort @ls) {
 750                                 next if $l =~ /^\./;
 751                                 if ((-d "$curdir/$l") && $p eq substr($l, 0, length $p)) {
 752                                         dbg("got dir: $curdir/$l\n") if isdbg('command');
 753                                         $dirfn .= "$l/";
 754                                         $curdir .= "/$l";
 755                                         $found++;
 756                                         last;
 757                                 }
 758                         }
 759                         # only proceed if we find the directory asked for
 760                         return () unless $found;
 761                 } else {
 762                         foreach my $l (sort @ls) {
 763                                 next if $l =~ /^\./;
 764                                 next unless $l =~ /\.$suffix$/;
 765                                 if ($p eq substr($l, 0, length $p)) {
 766                                         $l =~ s/\.$suffix$//;
 767                                         $dirfn = "" unless $dirfn;
 768                                         $cmd_cache{$short_cmd} = join(',', ($path, "$dirfn$l")); # cache it
 769                                         dbg("got path: $path cmd: $dirfn$l\n") if isdbg('command');
 770                                         return ($path, "$dirfn$l");
 771                                 }
 772                         }
 773                 }
 774         }
 775
 776         return ();
 777 }
 778
 779 # clear the command name cache
 780 sub clear_cmd_cache
 781 {
 782         no strict 'refs';
 783
 784         for my $k (keys %Cache) {
 785                 unless ($k =~ /cmd_cache/) {
 786                         dbg("Undefining cmd $k") if isdbg('command');
 787                         undef $DXCommandmode::{"${k}::"};
 788                 }
 789         }
 790         %cmd_cache = ();
 791         %Cache = ( cmd_clear_cmd_cache  => $Cache{cmd_clear_cmd_cache} );
 792 }
 793
 794 #
 795 # the persistant execution of things from the command directories
 796 #
 797 #
 798 # This allows perl programs to call functions dynamically
 799 #
 800 # This has been nicked directly from the perlembed pages
 801 #
 802 #require Devel::Symdump;
 803
 804 sub valid_package_name {
 805         my $string = shift;
 806         $string =~ s|([^A-Za-z0-9_/])|sprintf("_%2x",unpack("C",$1))|eg;
 807
 808         $string =~ s|/|_|g;
 809         return "cmd_$string";
 810 }
 811
 812 #
 813 # this bit of magic finds a command in the offered directory
 814 sub find_cmd_name {
 815         my $path = shift;
 816         my $cmdname = shift;
 817         my $package = valid_package_name($cmdname);
 818         my $filename = "$path/$cmdname.pl";
 819         my $mtime = -M $filename;
 820
 821         # return if we can't find it
 822         $errstr = undef;
 823         unless (defined $mtime) {
 824                 $errstr = DXM::msg('e1');
 825                 return undef;
 826         }
 827
 828         if(exists $Cache{$package} && exists $Cache{$package}->{mtime} && $Cache{$package}->{mtime} <= $mtime) {
 829                 #we have compiled this subroutine already,
 830                 #it has not been updated on disk, nothing left to do
 831                 #print STDERR "already compiled $package->handler\n";
 832                 dbg("find_cmd_name: $package cached") if isdbg('command');
 833         } else {
 834
 835                 my $sub = readfilestr($filename);
 836                 unless ($sub) {
 837                         $errstr = "Syserr: can't open '$filename' $!";
 838                         return undef;
 839                 };
 840
 841                 #wrap the code into a subroutine inside our unique package
 842                 my $eval = qq(package DXCommandmode::$package; use POSIX qw{:math_h}; use DXLog; use DXDebug; use DXUser; use DXUtil; our \@ISA = qw{DXCommandmode}; );
 843
 844
 845                 if ($sub =~ m|\s*sub\s+handle\n|) {
 846                         $eval .= $sub;
 847                 } else {
 848                         $eval .= qq(sub handle { $sub });
 849                 }
 850
 851                 if (isdbg('eval')) {
 852                         my @list = split /\n/, $eval;
 853                         my $line;
 854                         for (@list) {
 855                                 dbg($_ . "\n") if isdbg('eval');
 856                         }
 857                 }
 858
 859                 # get rid of any existing sub and try to compile the new one
 860                 no strict 'refs';
 861
 862                 if (exists $Cache{$package}) {
 863                         dbg("find_cmd_name: Redefining $package") if isdbg('command');
 864                         undef $DXCommandmode::{"${package}::"};
 865                         delete $Cache{$package};
 866                 } else {
 867                         dbg("find_cmd_name: Defining $package") if isdbg('command');
 868                 }
 869
 870                 eval $eval;
 871
 872                 $Cache{$package} = {mtime => $mtime } unless $@;
 873         }
 874
 875         return "DXCommandmode::$package";
 876 }
 877
 878 sub send
 879 {
 880         my $self = shift;
 881         if ($self->{gtk}) {
 882                 for (@_) {
 883                         $self->SUPER::send(dd(['cmd',$_]));
 884                 }
 885         } else {
 886                 $self->SUPER::send(@_);
 887         }
 888 }
 889
 890 sub local_send
 891 {
 892         my ($self, $let, $buf) = @_;
 893         if ($self->{state} eq 'prompt' || $self->{state} eq 'talk' || $self->{state} eq 'chat') {
 894                 if ($self->{enhanced}) {
 895                         $self->send_later($let, $buf);
 896                 } else {
 897                         $self->send($buf);
 898                 }
 899         } else {
 900                 $self->delay($buf);
 901         }
 902 }
 903
 904 # send a talk message here
 905 sub talk
 906 {
 907         my ($self, $from, $to, $via, $line, $onode) = @_;
 908         $line =~ s/\\5E/\^/g;
 909         if ($self->{talk}) {
 910                 if ($self->{gtk}) {
 911                         $self->local_send('T', dd(['talk',$to,$from,$via,$line]));
 912                 } else {
 913                         $self->local_send('T', "$to de $from: $line");
 914                 }
 915         }
 916         Log('talk', $to, $from, '<' . ($onode || '*'), $line);
 917         # send a 'not here' message if required
 918         unless ($self->{here} && $from ne $to) {
 919                 my $key = "$to$from";
 920                 unless (exists $nothereslug{$key}) {
 921                         my ($ref, $dxchan);
 922                         if (($ref = Route::get($from)) && ($dxchan = $ref->dxchan)) {
 923                                 my $name = $self->user->name || $to;
 924                                 my $s = $self->user->nothere || $dxchan->msg('nothere', $name);
 925                                 $nothereslug{$key} = $main::systime;
 926                                 $dxchan->talk($to, $from, undef, $s);
 927                         }
 928                 }
 929         }
 930 }
 931
 932 # send an announce
 933 sub announce
 934 {
 935         my $self = shift;
 936         my $line = shift;
 937         my $isolate = shift;
 938         my $to = shift;
 939         my $target = shift;
 940         my $text = shift;
 941         my ($filter, $hops);
 942
 943         if (!$self->{ann_talk} && $to ne $self->{call}) {
 944                 my $call = AnnTalk::is_talk_candidate($_[0], $text);
 945                 return if $call;
 946         }
 947
 948         if ($self->{annfilter}) {
 949                 ($filter, $hops) = $self->{annfilter}->it(@_ );
 950                 return unless $filter;
 951         }
 952
 953         unless ($self->{ann}) {
 954                 return if $_[0] ne $main::myalias && $_[0] ne $main::mycall;
 955         }
 956         return if $target eq 'SYSOP' && $self->{priv} < 5;
 957         my $buf;
 958         if ($self->{gtk}) {
 959                 $buf = dd(['ann', $to, $target, $text, @_])
 960         } else {
 961                 $buf = "$to$target de $_[0]: $text";
 962                 $buf =~ s/\%5E/^/g;
 963                 $buf .= "\a\a" if $self->{beep};
 964         }
 965         $self->local_send($target eq 'WX' ? 'W' : 'N', $buf);
 966 }
 967
 968 # send a chat
 969 sub chat
 970 {
 971         my $self = shift;
 972         my $line = shift;
 973         my $isolate = shift;
 974         my $target = shift;
 975         my $to = shift;
 976         my $text = shift;
 977         my ($filter, $hops);
 978
 979         return unless grep uc $_ eq $target, @{$self->{user}->{group}};
 980
 981         $text =~ s/^\#\d+ //;
 982         my $buf;
 983         if ($self->{gtk}) {
 984                 $buf = dd(['chat', $to, $target, $text, @_])
 985         } else {
 986                 $buf = "$target de $_[0]: $text";
 987                 $buf =~ s/\%5E/^/g;
 988                 $buf .= "\a\a" if $self->{beep};
 989         }
 990         $self->local_send('C', $buf);
 991 }
 992
 993 sub format_dx_spot
 994 {
 995         my $self = shift;
 996
 997         my $t = ztime($_[2]);
 998         my $loc = '';
 999         my $clth = $self->{consort} eq 'local' ? 29 : 30;
1000         my $comment = substr (($_[3] || ''), 0, $clth);
1001         $comment .= ' ' x ($clth - length($comment));
1002         if ($self->{user}->wantgrid) {
1003                 my $ref = DXUser::get_current($_[4]);
1004                 if ($ref) {
1005                         $loc = $ref->qra || '';
1006                         $loc = ' ' . substr($loc, 0, 4) if $loc;
1007                 }
1008         }
1009
1010         if ($self->{user}->wantdxitu) {
1011                 $loc = ' ' . sprintf("%2d", $_[10]) if defined $_[10];
1012                 $comment = substr($comment, 0,  $self->{consort} eq 'local' ? 26 : 27) . ' ' . sprintf("%2d", $_[8]) if defined $_[8];
1013         } elsif ($self->{user}->wantdxcq) {
1014                 $loc = ' ' . sprintf("%2d", $_[11]) if defined $_[11];
1015                 $comment = substr($comment, 0,  $self->{consort} eq 'local' ? 26 : 27) . ' ' . sprintf("%2d", $_[9]) if defined $_[9];
1016         } elsif ($self->{user}->wantusstate) {
1017                 $loc = ' ' . $_[13] if $_[13];
1018                 $comment = substr($comment, 0,  $self->{consort} eq 'local' ? 26 : 27) . ' ' . $_[12] if $_[12];
1019         }
1020
1021         return sprintf "DX de %-7.7s%11.1f  %-12.12s %-s $t$loc", "$_[4]:", $_[0], $_[1], $comment;
1022 }
1023
1024 # send a dx spot
1025 sub dx_spot
1026 {
1027         my $self = shift;
1028         my $line = shift;
1029         my $isolate = shift;
1030         return unless $self->{dx};
1031
1032         my ($filter, $hops);
1033
1034         if ($self->{spotsfilter}) {
1035                 ($filter, $hops) = $self->{spotsfilter}->it(@_ );
1036                 return unless $filter;
1037         }
1038
1039         dbg('spot: "' . join('","', @_) . '"') if isdbg('dxspot');
1040
1041         my $buf;
1042         if ($self->{ve7cc}) {
1043                 $buf = VE7CC::dx_spot($self, @_);
1044         } elsif ($self->{gtk}) {
1045                 my ($dxloc, $byloc);
1046
1047                 my $ref = DXUser::get_current($_[4]);
1048                 if ($ref) {
1049                         $byloc = $ref->qra;
1050                         $byloc = substr($byloc, 0, 4) if $byloc;
1051                 }
1052
1053                 my $spot = $_[1];
1054                 $spot =~ s|/\w{1,4}$||;
1055                 $ref = DXUser::get_current($spot);
1056                 if ($ref) {
1057                         $dxloc = $ref->qra;
1058                         $dxloc = substr($dxloc, 0, 4) if $dxloc;
1059                 }
1060                 $buf = dd(['dx', @_, ($dxloc||''), ($byloc||'')]);
1061
1062         } else {
1063                 $buf = $self->format_dx_spot(@_);
1064                 $buf .= "\a\a" if $self->{beep};
1065                 $buf =~ s/\%5E/^/g;
1066         }
1067
1068         $self->local_send('X', $buf);
1069 }
1070
1071 sub wwv
1072 {
1073         my $self = shift;
1074         my $line = shift;
1075         my $isolate = shift;
1076         my ($filter, $hops);
1077
1078         return unless $self->{wwv};
1079
1080         if ($self->{wwvfilter}) {
1081                 ($filter, $hops) = $self->{wwvfilter}->it(@_[7..$#_] );
1082                 return unless $filter;
1083         }
1084
1085         my $buf;
1086         if ($self->{gtk}) {
1087                 $buf = dd(['wwv', @_])
1088         } else {
1089                 $buf = "WWV de $_[6] <$_[1]>:   SFI=$_[2], A=$_[3], K=$_[4], $_[5]";
1090                 $buf .= "\a\a" if $self->{beep};
1091         }
1092
1093         $self->local_send('V', $buf);
1094 }
1095
1096 sub wcy
1097 {
1098         my $self = shift;
1099         my $line = shift;
1100         my $isolate = shift;
1101         my ($filter, $hops);
1102
1103         return unless $self->{wcy};
1104
1105         if ($self->{wcyfilter}) {
1106                 ($filter, $hops) = $self->{wcyfilter}->it(@_ );
1107                 return unless $filter;
1108         }
1109
1110         my $buf;
1111         if ($self->{gtk}) {
1112                 $buf = dd(['wcy', @_])
1113         } else {
1114                 $buf = "WCY de $_[10] <$_[1]> : K=$_[4] expK=$_[5] A=$_[3] R=$_[6] SFI=$_[2] SA=$_[7] GMF=$_[8] Au=$_[9]";
1115                 $buf .= "\a\a" if $self->{beep};
1116         }
1117         $self->local_send('Y', $buf);
1118 }
1119
1120 # broadcast debug stuff to all interested parties
1121 sub broadcast_debug
1122 {
1123         my $s = shift;                          # the line to be rebroadcast
1124
1125         foreach my $dxchan (DXChannel::get_all_users) {
1126                 next unless $dxchan->{enhanced} && $dxchan->{senddbg};
1127                 if ($dxchan->{gtk}) {
1128                         $dxchan->send_later('L', dd(['db', $s]));
1129                 } else {
1130                         $dxchan->send_later('L', $s);
1131                 }
1132         }
1133 }
1134
1135 sub do_entry_stuff
1136 {
1137         my $self = shift;
1138         my $line = shift;
1139         my @out;
1140
1141         if ($self->state eq 'enterbody') {
1142                 my $loc = $self->{loc} || confess "local var gone missing" ;
1143                 if ($line eq "\032" || $line eq '%1A' || uc $line eq "/EX") {
1144                         no strict 'refs';
1145                         push @out, &{$loc->{endaction}}($self);          # like this for < 5.8.0
1146                         $self->func(undef);
1147                         $self->state('prompt');
1148                 } elsif ($line eq "\031" || uc $line eq "/ABORT" || uc $line eq "/QUIT") {
1149                         push @out, $self->msg('m10');
1150                         delete $loc->{lines};
1151                         delete $self->{loc};
1152                         $self->func(undef);
1153                         $self->state('prompt');
1154                 } else {
1155                         push @{$loc->{lines}}, length($line) > 0 ? $line : " ";
1156                         # i.e. it ain't and end or abort, therefore store the line
1157                 }
1158         } else {
1159                 confess "Invalid state $self->{state}";
1160         }
1161         return @out;
1162 }
1163
1164 sub store_startup_script
1165 {
1166         my $self = shift;
1167         my $loc = $self->{loc} || confess "local var gone missing" ;
1168         my @out;
1169         my $call = $loc->{call} || confess "callsign gone missing";
1170         confess "lines array gone missing" unless ref $loc->{lines};
1171         my $r = Script::store($call, $loc->{lines});
1172         if (defined $r) {
1173                 if ($r) {
1174                         push @out, $self->msg('m19', $call, $r);
1175                 } else {
1176                         push @out, $self->msg('m20', $call);
1177                 }
1178         } else {
1179                 push @out, "error opening startup script $call $!";
1180         }
1181         return @out;
1182 }
1183
1184 # Import any commands contained in any files in import_cmd directory
1185 #
1186 # If the filename has a recogisable callsign as some delimited part
1187 # of it, then this is the user the command will be run as.
1188 #
1189 sub import_cmd
1190 {
1191         # are there any to do in this directory?
1192         return unless -d $cmdimportdir;
1193         unless (opendir(DIR, $cmdimportdir)) {
1194                 LogDbg('err', "can\'t open $cmdimportdir $!");
1195                 return;
1196         }
1197
1198         my @names = readdir(DIR);
1199         closedir(DIR);
1200         my $name;
1201
1202         return unless @names;
1203
1204         foreach $name (@names) {
1205                 next if $name =~ /^\./;
1206
1207                 my $s = Script->new($name, $cmdimportdir);
1208                 if ($s) {
1209                         LogDbg('DXCommand', "Run import cmd file $name");
1210                         my @cat = split /[^A-Za-z0-9]+/, $name;
1211                         my ($call) = grep {is_callsign(uc $_)} @cat;
1212                         $call ||= $main::mycall;
1213                         $call = uc $call;
1214                         my @out;
1215
1216
1217                         $s->inscript(0);        # switch off script checks
1218
1219                         if ($call eq $main::mycall) {
1220                                 @out = $s->run($main::me, 1);
1221                         } else {
1222                                 my $dxchan = DXChannel::get($call);
1223                             if ($dxchan) {
1224                                         @out = $s->run($dxchan, 1);
1225                                 } else {
1226                                         my $u = DXUser::get($call);
1227                                         if ($u) {
1228                                                 $dxchan = $main::me;
1229                                                 my $old = $dxchan->{call};
1230                                                 my $priv = $dxchan->{priv};
1231                                                 my $user = $dxchan->{user};
1232                                                 $dxchan->{call} = $call;
1233                                                 $dxchan->{priv} = $u->priv;
1234                                                 $dxchan->{user} = $u;
1235                                                 @out = $s->run($dxchan, 1);
1236                                                 $dxchan->{call} = $old;
1237                                                 $dxchan->{priv} = $priv;
1238                                                 $dxchan->{user} = $user;
1239                                         } else {
1240                                                 LogDbg('err', "Trying to run import cmd for non-existant user $call");
1241                                         }
1242                                 }
1243                         }
1244                         $s->erase;
1245                         for (@out) {
1246                                 LogDbg('DXCommand', "Import cmd $name/$call: $_");
1247                         }
1248                 } else {
1249                         LogDbg('err', "Failed to open $cmdimportdir/$name $!");
1250                         unlink "$cmdimportdir/$name";
1251                 }
1252         }
1253 }
1254
1255 sub print_find_reply
1256 {
1257         my ($self, $node, $target, $flag, $ms) = @_;
1258         my $sort = $flag == 2 ? "External" : "Local";
1259         $self->send("$sort $target found at $node in $ms ms" );
1260 }
1261
1262 # send the most relevant motd
1263 sub send_motd
1264 {
1265         my $self = shift;
1266         my $motd;
1267
1268         unless ($self->{registered}) {
1269                 $motd = "${main::motd}_nor_$self->{lang}";
1270                 $motd = "${main::motd}_nor" unless -e $motd;
1271         }
1272         $motd = "${main::motd}_$self->{lang}" unless $motd && -e $motd;
1273         $motd = $main::motd unless $motd && -e $motd;
1274         if ($self->conn->ax25) {
1275                 if ($motd) {
1276                         $motd = "${motd}_ax25" if -e "${motd}_ax25";
1277                 } else {
1278                         $motd = "${main::motd}_ax25" if -e "${main::motd}_ax25";
1279                 }
1280         }
1281         $self->send_file($motd) if -e $motd;
1282 }
1283
1284
1285 # Punt off a long running command into a separate process
1286 #
1287 # This is called from commands to run some potentially long running
1288 # function. The process forks and then runs the function and returns
1289 # the result back to the cmd.
1290 #
1291 # NOTE: this merely forks the current process and then runs the cmd in that (current) context.
1292 #       IT DOES NOT START UP SOME NEW PROGRAM AND RELIES ON THE FACT THAT IT IS RUNNING DXSPIDER
1293 #       THE CURRENT CONTEXT!!
1294 #
1295 # call: $self->spawn_cmd($original_cmd_line, \<function>, [cb => sub{...}], [prefix => "cmd> "], [progress => 0|1], [args => [...]]);
1296 sub spawn_cmd
1297 {
1298         my $self = shift;
1299         my $line = shift;
1300         my $cmdref = shift;
1301         my $call = $self->{call};
1302         my %args = @_;
1303         my @out;
1304
1305         my $cb = delete $args{cb};
1306         my $prefix = delete $args{prefix};
1307         my $progress = delete $args{progress};
1308         my $args = delete $args{args} || [];
1309         my $t0 = [gettimeofday];
1310
1311         no strict 'refs';
1312
1313         # just behave normally if something has set the "one-shot" _nospawn in the channel
1314         if ($self->{_nospawn}) {
1315                 eval { @out = $cmdref->(@$args); };
1316                 if ($@) {
1317                         DXDebug::dbgprintring(25);
1318                         push @out, DXDebug::shortmess($@);
1319                 }
1320                 return @out;
1321         }
1322
1323         my $fc = Mojo::IOLoop::Subprocess->new;
1324 #       $fc->serializer(\&encode_json);
1325 #       $fc->deserializer(\&decode_json);
1326         $fc->run(
1327                          sub {
1328                                  my $subpro = shift;
1329                                  if (isdbg('progress')) {
1330                                          my $s = "line: $line";
1331                                          $s .= ", args: " . join(', ', @$args) if $args && @$args;
1332                                          dbg($s);
1333                                  }
1334                                  eval { @out = $cmdref->(@$args); };
1335                                  if ($@) {
1336                                          DXDebug::dbgprintring(25);
1337                                          push @out, DXDebug::shortmess($@);
1338                                  }
1339                                  return @out;
1340                          },
1341 #                        $args,
1342                          sub {
1343                                  my ($fc, $err, @res) = @_;
1344                                  my $dxchan = DXChannel::get($call);
1345                                  return unless $dxchan;
1346
1347                                  if ($err) {
1348                                          my $s = "DXProt::spawn_cmd: call $call error $err";
1349                                          dbg($s) if isdbg('chan');
1350                                          $dxchan->send($s);
1351                                          return;
1352                                  }
1353                                  if ($cb) {
1354                                          # transform output if required
1355                                          @res = $cb->($dxchan, @res);
1356                                  }
1357                                  if (@res) {
1358                                          if (defined $prefix) {
1359                                                  $dxchan->send(map {"$prefix$_"} @res);
1360                                          } else {
1361                                                  $dxchan->send(@res);
1362                                          }
1363                                  }
1364                                  diffms("by $call", $line, $t0, scalar @res) if isdbg('progress');
1365                          });
1366
1367         return @out;
1368 }
1369
1370 sub user_count
1371 {
1372         return ($users, $maxusers);
1373 }
1374 1;
1375 __END__