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 # $Id$
   8 #
   9
  10 package DXCommandmode;
  11
  12 use POSIX;
  13
  14 @ISA = qw(DXChannel);
  15
  16 use DXUtil;
  17 use DXChannel;
  18 use DXUser;
  19 use DXVars;
  20 use DXDebug;
  21 use DXM;
  22 use DXLog;
  23 use DXLogPrint;
  24 use DXBearing;
  25 use CmdAlias;
  26 use Filter;
  27 use Minimuf;
  28 use DXDb;
  29 use AnnTalk;
  30 use WCY;
  31 use Sun;
  32 use Internet;
  33 use Script;
  34 use Net::Telnet;
  35 use QSL;
  36 use DB_File;
  37 use VE7CC;
  38
  39 use strict;
  40 use vars qw(%Cache %cmd_cache $errstr %aliases $scriptbase $maxerrors %nothereslug $maxbadcount);
  41
  42 %Cache = ();                                    # cache of dynamically loaded routine's mod times
  43 %cmd_cache = ();                                # cache of short names
  44 $errstr = ();                                   # error string from eval
  45 %aliases = ();                                  # aliases for (parts of) commands
  46 $scriptbase = "$main::root/scripts"; # the place where all users start scripts go
  47 $maxerrors = 20;                                # the maximum number of concurrent errors allowed before disconnection
  48 $maxbadcount = 3;                               # no of bad words allowed before disconnection
  49
  50
  51 use vars qw($VERSION $BRANCH);
  52 $VERSION = sprintf( "%d.%03d", q$Revision$ =~ /(\d+)\.(\d+)/ );
  53 $BRANCH = sprintf( "%d.%03d", q$Revision$ =~ /\d+\.\d+\.(\d+)\.(\d+)/  || (0,0));
  54 $main::build += $VERSION;
  55 $main::branch += $BRANCH;
  56
  57 #
  58 # obtain a new connection this is derived from dxchannel
  59 #
  60
  61 sub new
  62 {
  63         my $self = DXChannel::alloc(@_);
  64
  65         # routing, this must go out here to prevent race condx
  66         my $pkg = shift;
  67         my $call = shift;
  68         my @rout = $main::routeroot->add_user($call, Route::here(1));
  69
  70         # ALWAYS output the user
  71         my $ref = Route::User::get($call);
  72         $main::me->route_pc16($main::mycall, undef, $main::routeroot, $ref) if $ref;
  73
  74         return $self;
  75 }
  76
  77 # this is how a a connection starts, you get a hello message and the motd with
  78 # possibly some other messages asking you to set various things up if you are
  79 # new (or nearly new and slacking) user.
  80
  81 sub start
  82 {
  83         my ($self, $line, $sort) = @_;
  84         my $user = $self->{user};
  85         my $call = $self->{call};
  86         my $name = $user->{name};
  87
  88         # log it
  89         my $host = $self->{conn}->{peerhost} || "unknown";
  90         Log('DXCommand', "$call connected from $host");
  91
  92         $self->{name} = $name ? $name : $call;
  93         $self->send($self->msg('l2',$self->{name}));
  94         $self->state('prompt');         # a bit of room for further expansion, passwords etc
  95         $self->{priv} = $user->priv || 0;
  96         $self->{lang} = $user->lang || $main::lang || 'en';
  97         $self->{pagelth} = $user->pagelth || 20;
  98         ($self->{width}) = $line =~ /width=(\d+)/; $line =~ s/\s*width=\d+\s*//;
  99         $self->{width} = 80 unless $self->{width} && $self->{width} > 80;
 100         $self->{consort} = $line;       # save the connection type
 101
 102         # set some necessary flags on the user if they are connecting
 103         $self->{beep} = $user->wantbeep;
 104         $self->{ann} = $user->wantann;
 105         $self->{wwv} = $user->wantwwv;
 106         $self->{wcy} = $user->wantwcy;
 107         $self->{talk} = $user->wanttalk;
 108         $self->{wx} = $user->wantwx;
 109         $self->{dx} = $user->wantdx;
 110         $self->{logininfo} = $user->wantlogininfo;
 111         $self->{ann_talk} = $user->wantann_talk;
 112         $self->{here} = 1;
 113         $self->{prompt} = $user->prompt if $user->prompt;
 114
 115         # sort out new dx spot stuff
 116         $user->wantdxcq(0) unless defined $user->{wantdxcq};
 117         $user->wantdxitu(0) unless defined $user->{wantdxitu};
 118         $user->wantusstate(0) unless defined $user->{wantusstate};
 119
 120         # sort out registration
 121         if ($main::reqreg == 1) {
 122                 $self->{registered} = $user->registered;
 123         } elsif ($main::reqreg == 2) {
 124                 $self->{registered} = !$user->registered;
 125         } else {
 126                 $self->{registered} = 1;
 127         }
 128
 129
 130         # decide which motd to send
 131         my $motd = "${main::motd}_nor" unless $self->{registered};
 132         $motd = $main::motd unless $motd && -e $motd;
 133         $self->send_file($motd) if -e $motd;
 134
 135         # sort out privilege reduction
 136         $self->{priv} = 0 if $line =~ /^(ax|te)/ && !$self->conn->{usedpasswd};
 137
 138         # get the filters
 139         $self->{spotsfilter} = Filter::read_in('spots', $call, 0) || Filter::read_in('spots', 'user_default', 0);
 140         $self->{wwvfilter} = Filter::read_in('wwv', $call, 0) || Filter::read_in('wwv', 'user_default', 0);
 141         $self->{wcyfilter} = Filter::read_in('wcy', $call, 0) || Filter::read_in('wcy', 'user_default', 0);
 142         $self->{annfilter} = Filter::read_in('ann', $call, 0) || Filter::read_in('ann', 'user_default', 0) ;
 143
 144         # clean up qra locators
 145         my $qra = $user->qra;
 146         $qra = undef if ($qra && !DXBearing::is_qra($qra));
 147         unless ($qra) {
 148                 my $lat = $user->lat;
 149                 my $long = $user->long;
 150                 $user->qra(DXBearing::lltoqra($lat, $long)) if (defined $lat && defined $long);
 151         }
 152
 153         # decide on echo
 154         my $echo = $user->wantecho;
 155         unless ($echo) {
 156                 $self->send_now('E', "0");
 157                 $self->send($self->msg('echow'));
 158                 $self->conn->echo($echo) if $self->conn->can('echo');
 159         }
 160
 161         $self->tell_login('loginu');
 162
 163         # do we need to send a forward/opernam?
 164         my $lastoper = $user->lastoper || 0;
 165         my $homenode = $user->homenode || "";
 166         if ($homenode eq $main::mycall && $main::systime >= $lastoper + $DXUser::lastoperinterval) {
 167                 run_cmd($main::me, "forward/opernam $call");
 168                 $user->lastoper($main::systime + ((int rand(10)) * 86400));
 169         }
 170
 171         # run a script send the output to the punter
 172         my $script = new Script(lc $call) || new Script('user_default');
 173         $script->run($self) if $script;
 174
 175         # send cluster info
 176         my $info = Route::cluster();
 177         $self->send("Cluster:$info");
 178
 179         # send prompts and things
 180         $self->send($self->msg('namee1')) if !$user->name;
 181         $self->send($self->msg('qthe1')) if !$user->qth;
 182         $self->send($self->msg('qll')) if !$user->qra || (!$user->lat && !$user->long);
 183         $self->send($self->msg('hnodee1')) if !$user->qth;
 184         $self->send($self->msg('m9')) if DXMsg::for_me($call);
 185         $self->prompt;
 186 }
 187
 188 #
 189 # This is the normal command prompt driver
 190 #
 191
 192 sub normal
 193 {
 194         my $self = shift;
 195         my $cmdline = shift;
 196         my @ans;
 197
 198         # save this for them's that need it
 199         my $rawline = $cmdline;
 200
 201         # remove leading and trailing spaces
 202         $cmdline =~ s/^\s*(.*)\s*$/$1/;
 203
 204         if ($self->{state} eq 'page') {
 205                 my $i = $self->{pagelth};
 206                 my $ref = $self->{pagedata};
 207                 my $tot = @$ref;
 208
 209                 # abort if we get a line starting in with a
 210                 if ($cmdline =~ /^a/io) {
 211                         undef $ref;
 212                         $i = 0;
 213                 }
 214
 215                 # send a tranche of data
 216                 while ($i-- > 0 && @$ref) {
 217                         my $line = shift @$ref;
 218                         $line =~ s/\s+$//o;     # why am having to do this?
 219                         $self->send($line);
 220                 }
 221
 222                 # reset state if none or else chuck out an intermediate prompt
 223                 if ($ref && @$ref) {
 224                         $tot -= $self->{pagelth};
 225                         $self->send($self->msg('page', $tot));
 226                 } else {
 227                         $self->state('prompt');
 228                 }
 229         } elsif ($self->{state} eq 'sysop') {
 230                 my $passwd = $self->{user}->passwd;
 231                 if ($passwd) {
 232                         my @pw = grep {$_ !~ /\s/} split //, $passwd;
 233                         my @l = @{$self->{passwd}};
 234                         my $str = "$pw[$l[0]].*$pw[$l[1]].*$pw[$l[2]].*$pw[$l[3]].*$pw[$l[4]]";
 235                         if ($cmdline =~ /$str/) {
 236                                 $self->{priv} = $self->{user}->priv;
 237                         } else {
 238                                 $self->send($self->msg('sorry'));
 239                         }
 240                 } else {
 241                         $self->send($self->msg('sorry'));
 242                 }
 243                 $self->state('prompt');
 244         } elsif ($self->{state} eq 'passwd') {
 245                 my $passwd = $self->{user}->passwd;
 246                 if ($passwd && $cmdline eq $passwd) {
 247                         $self->send($self->msg('pw1'));
 248                         $self->state('passwd1');
 249                 } else {
 250                         $self->conn->{echo} = $self->conn->{decho};
 251                         delete $self->conn->{decho};
 252                         $self->send($self->msg('sorry'));
 253                         $self->state('prompt');
 254                 }
 255         } elsif ($self->{state} eq 'passwd1') {
 256                 $self->{passwd} = $cmdline;
 257                 $self->send($self->msg('pw2'));
 258                 $self->state('passwd2');
 259         } elsif ($self->{state} eq 'passwd2') {
 260                 if ($cmdline eq $self->{passwd}) {
 261                         $self->{user}->passwd($cmdline);
 262                         $self->send($self->msg('pw3'));
 263                 } else {
 264                         $self->send($self->msg('pw4'));
 265                 }
 266                 $self->conn->{echo} = $self->conn->{decho};
 267                 delete $self->conn->{decho};
 268                 $self->state('prompt');
 269         } elsif ($self->{state} eq 'talk') {
 270                 if ($cmdline =~ m{^(?:/EX|/ABORT)}i) {
 271                         for (@{$self->{talklist}}) {
 272                                 $self->send_talks($_,  $self->msg('talkend'));
 273                         }
 274                         $self->state('prompt');
 275                         delete $self->{talklist};
 276                 } elsif ($cmdline =~ m|^/+\w+|) {
 277                         $cmdline =~ s|^/||;
 278                         my $sendit = $cmdline =~ s|^/+||;
 279                         my @in = $self->run_cmd($cmdline);
 280                         $self->send_ans(@in);
 281                         if ($sendit && $self->{talklist} && @{$self->{talklist}}) {
 282                                 foreach my $l (@in) {
 283                                         my @bad;
 284                                         if (@bad = BadWords::check($l)) {
 285                                                 $self->badcount(($self->badcount||0) + @bad);
 286                                                 Log('DXCommand', "$self->{call} swore: $l");
 287                                         } else {
 288                                                 for (@{$self->{talklist}}) {
 289                                                         $self->send_talks($_, $l);
 290                                                 }
 291                                         }
 292                                 }
 293                         }
 294                         $self->send($self->talk_prompt);
 295                 } elsif ($self->{talklist} && @{$self->{talklist}}) {
 296                         # send what has been said to whoever is in this person's talk list
 297                         my @bad;
 298                         if (@bad = BadWords::check($cmdline)) {
 299                                 $self->badcount(($self->badcount||0) + @bad);
 300                                 Log('DXCommand', "$self->{call} swore: $cmdline");
 301                         } else {
 302                                 for (@{$self->{talklist}}) {
 303                                         $self->send_talks($_, $rawline);
 304                                 }
 305                         }
 306                         $self->send($self->talk_prompt) if $self->{state} eq 'talk';
 307                 } else {
 308                         # for safety
 309                         $self->state('prompt');
 310                 }
 311         } elsif (my $func = $self->{func}) {
 312                 no strict 'refs';
 313                 my @ans;
 314                 if (ref $self->{edit}) {
 315                         eval { @ans = $self->{edit}->$func($self, $rawline)};
 316                 } else {
 317                         eval {  @ans = &{$self->{func}}($self, $rawline) };
 318                 }
 319                 if ($@) {
 320                         $self->send_ans("Syserr: on stored func $self->{func}", $@);
 321                         delete $self->{func};
 322                         $self->state('prompt');
 323                         undef $@;
 324                 }
 325                 $self->send_ans(@ans);
 326         } else {
 327                 $self->send_ans(run_cmd($self, $cmdline));
 328         }
 329
 330         # check for excessive swearing
 331         if ($self->{badcount} && $self->{badcount} >= $maxbadcount) {
 332                 Log('DXCommand', "$self->{call} logged out for excessive swearing");
 333                 $self->disconnect;
 334                 return;
 335         }
 336
 337         # send a prompt only if we are in a prompt state
 338         $self->prompt() if $self->{state} =~ /^prompt/o;
 339 }
 340
 341 # send out the talk messages taking into account vias and connectivity
 342 sub send_talks
 343 {
 344         my ($self, $ent, $line) = @_;
 345
 346         my ($to, $via) = $ent =~ /(\S+)>(\S+)/;
 347         $to = $ent unless $to;
 348         my $call = $via ? $via : $to;
 349         my $clref = Route::get($call);
 350         my $dxchan = $clref->dxchan if $clref;
 351         if ($dxchan) {
 352                 $dxchan->talk($self->{call}, $to, $via, $line);
 353         } else {
 354                 $self->send($self->msg('disc2', $via ? $via : $to));
 355                 my @l = grep { $_ ne $ent } @{$self->{talklist}};
 356                 if (@l) {
 357                         $self->{talklist} = \@l;
 358                 } else {
 359                         delete $self->{talklist};
 360                         $self->state('prompt');
 361                 }
 362         }
 363 }
 364
 365 sub talk_prompt
 366 {
 367         my $self = shift;
 368         my @call;
 369         for (@{$self->{talklist}}) {
 370                 my ($to, $via) = /(\S+)>(\S+)/;
 371                 $to = $_ unless $to;
 372                 push @call, $to;
 373         }
 374         return $self->msg('talkprompt', join(',', @call));
 375 }
 376
 377 #
 378 # send a load of stuff to a command user with page prompting
 379 # and stuff
 380 #
 381
 382 sub send_ans
 383 {
 384         my $self = shift;
 385
 386         if ($self->{pagelth} && @_ > $self->{pagelth}) {
 387                 my $i;
 388                 for ($i = $self->{pagelth}; $i-- > 0; ) {
 389                         my $line = shift @_;
 390                         $line =~ s/\s+$//o;     # why am having to do this?
 391                         $self->send($line);
 392                 }
 393                 $self->{pagedata} =  [ @_ ];
 394                 $self->state('page');
 395                 $self->send($self->msg('page', scalar @_));
 396         } else {
 397                 for (@_) {
 398                         if (defined $_) {
 399                                 $self->send($_);
 400                         } else {
 401                                 $self->send('');
 402                         }
 403                 }
 404         }
 405 }
 406 #
 407 # this is the thing that runs the command, it is done like this for the
 408 # benefit of remote command execution
 409 #
 410
 411 sub run_cmd
 412 {
 413         my $self = shift;
 414         my $user = $self->{user};
 415         my $call = $self->{call};
 416         my $cmdline = shift;
 417         my @ans;
 418
 419
 420         return () if length $cmdline == 0;
 421
 422         # split the command line up into parts, the first part is the command
 423         my ($cmd, $args) = split /\s+/, $cmdline, 2;
 424         $args = "" unless defined $args;
 425
 426         if ($cmd) {
 427                 # strip out // on command only
 428                 $cmd =~ s|//|/|g;
 429
 430                 my ($path, $fcmd);
 431
 432                 dbg("cmd: $cmd") if isdbg('command');
 433
 434                 # alias it if possible
 435                 my $acmd = CmdAlias::get_cmd($cmd);
 436                 if ($acmd) {
 437                         ($cmd, $args) = split /\s+/, "$acmd $args", 2;
 438                         $args = "" unless defined $args;
 439                         dbg("aliased cmd: $cmd $args") if isdbg('command');
 440                 }
 441
 442                 # first expand out the entry to a command
 443                 ($path, $fcmd) = search($main::localcmd, $cmd, "pl");
 444                 ($path, $fcmd) = search($main::cmd, $cmd, "pl") if !$path || !$fcmd;
 445
 446                 if ($path && $cmd) {
 447                         dbg("path: $cmd cmd: $fcmd") if isdbg('command');
 448
 449                         my $package = find_cmd_name($path, $fcmd);
 450                         return ($@) if $@;
 451
 452                         if ($package) {
 453                                 no strict 'refs';
 454                                 dbg("package: $package") if isdbg('command');
 455                                 eval { @ans = &$package($self, $args) };
 456                                 return (DXDebug::shortmess($@)) if $@;
 457                         }
 458                 } else {
 459                         dbg("cmd: $cmd not found") if isdbg('command');
 460                         if (++$self->{errors} > $maxerrors) {
 461                                 $self->send($self->msg('e26'));
 462                                 $self->disconnect;
 463                                 return ();
 464                         } else {
 465                                 return ($self->msg('e1'));
 466                         }
 467                 }
 468         }
 469
 470         my $ok = shift @ans;
 471         if ($ok) {
 472                 delete $self->{errors};
 473         } else {
 474                 if (++$self->{errors} > $maxerrors) {
 475                         $self->send($self->msg('e26'));
 476                         $self->disconnect;
 477                         return ();
 478                 }
 479         }
 480         return map {s/([^\s])\s+$/$1/; $_} @ans;
 481 }
 482
 483 #
 484 # This is called from inside the main cluster processing loop and is used
 485 # for despatching commands that are doing some long processing job
 486 #
 487 sub process
 488 {
 489         my $t = time;
 490         my @dxchan = DXChannel->get_all();
 491         my $dxchan;
 492
 493         foreach $dxchan (@dxchan) {
 494                 next if $dxchan->sort ne 'U';
 495
 496                 # send a prompt if no activity out on this channel
 497                 if ($t >= $dxchan->t + $main::user_interval) {
 498                         $dxchan->prompt() if $dxchan->{state} =~ /^prompt/o;
 499                         $dxchan->t($t);
 500                 }
 501         }
 502
 503         while (my ($k, $v) = each %nothereslug) {
 504                 if ($main::systime >= $v + 300) {
 505                         delete $nothereslug{$k};
 506                 }
 507         }
 508 }
 509
 510 #
 511 # finish up a user context
 512 #
 513 sub disconnect
 514 {
 515         my $self = shift;
 516         my $call = $self->call;
 517
 518         return if $self->{disconnecting}++;
 519
 520         delete $self->{senddbg};
 521
 522         my $uref = Route::User::get($call);
 523         my @rout;
 524         if ($uref) {
 525                 @rout = $main::routeroot->del_user($uref);
 526                 dbg("B/C PC17 on $main::mycall for: $call") if isdbg('route');
 527
 528                 # issue a pc17 to everybody interested
 529                 $main::me->route_pc17($main::mycall, undef, $main::routeroot, $uref);
 530         } else {
 531                 confess "trying to disconnect a non existant user $call";
 532         }
 533
 534         # I was the last node visited
 535     $self->user->node($main::mycall);
 536
 537         # send info to all logged in thingies
 538         $self->tell_login('logoutu');
 539
 540         Log('DXCommand', "$call disconnected");
 541
 542         $self->SUPER::disconnect;
 543 }
 544
 545 #
 546 # short cut to output a prompt
 547 #
 548
 549 sub prompt
 550 {
 551         my $self = shift;
 552         if ($self->{prompt}) {
 553                 $self->send($self->{prompt});
 554         } else {
 555                 $self->send($self->msg($self->here ? 'pr' : 'pr2', $self->call, cldate($main::systime), ztime($main::systime)));
 556         }
 557 }
 558
 559 # broadcast a message to all users [except those mentioned after buffer]
 560 sub broadcast
 561 {
 562         my $pkg = shift;                        # ignored
 563         my $s = shift;                          # the line to be rebroadcast
 564
 565     foreach my $dxchan (DXChannel->get_all()) {
 566                 next unless $dxchan->{sort} eq 'U'; # only interested in user channels
 567                 next if grep $dxchan == $_, @_;
 568                 $dxchan->send($s);                      # send it
 569         }
 570 }
 571
 572 # gimme all the users
 573 sub get_all
 574 {
 575         return grep {$_->{sort} eq 'U'} DXChannel->get_all();
 576 }
 577
 578 # run a script for this user
 579 sub run_script
 580 {
 581         my $self = shift;
 582         my $silent = shift || 0;
 583
 584 }
 585
 586 #
 587 # search for the command in the cache of short->long form commands
 588 #
 589
 590 sub search
 591 {
 592         my ($path, $short_cmd, $suffix) = @_;
 593         my ($apath, $acmd);
 594
 595         # commands are lower case
 596         $short_cmd = lc $short_cmd;
 597         dbg("command: $path $short_cmd\n") if isdbg('command');
 598
 599         # do some checking for funny characters
 600         return () if $short_cmd =~ /\/$/;
 601
 602         # return immediately if we have it
 603         ($apath, $acmd) = split ',', $cmd_cache{$short_cmd} if $cmd_cache{$short_cmd};
 604         if ($apath && $acmd) {
 605                 dbg("cached $short_cmd = ($apath, $acmd)\n") if isdbg('command');
 606                 return ($apath, $acmd);
 607         }
 608
 609         # if not guess
 610         my @parts = split '/', $short_cmd;
 611         my $dirfn;
 612         my $curdir = $path;
 613         my $p;
 614         my $i;
 615         my @lparts;
 616
 617         for ($i = 0; $i < @parts; $i++) {
 618                 my  $p = $parts[$i];
 619                 opendir(D, $curdir) or confess "can't open $curdir $!";
 620                 my @ls = readdir D;
 621                 closedir D;
 622                 my $l;
 623                 foreach $l (sort @ls) {
 624                         next if $l =~ /^\./;
 625                         if ($i < $#parts) {             # we are dealing with directories
 626                                 if ((-d "$curdir/$l") && $p eq substr($l, 0, length $p)) {
 627                                         dbg("got dir: $curdir/$l\n") if isdbg('command');
 628                                         $dirfn .= "$l/";
 629                                         $curdir .= "/$l";
 630                                         last;
 631                                 }
 632                         } else {                        # we are dealing with commands
 633                                 @lparts = split /\./, $l;
 634                                 next if $lparts[$#lparts] ne $suffix;        # only look for .$suffix files
 635                                 if ($p eq substr($l, 0, length $p)) {
 636                                         pop @lparts; #  remove the suffix
 637                                         $l = join '.', @lparts;
 638                                         #                 chop $dirfn;               # remove trailing /
 639                                         $dirfn = "" unless $dirfn;
 640                                         $cmd_cache{$short_cmd} = join(',', ($path, "$dirfn$l")); # cache it
 641                                         dbg("got path: $path cmd: $dirfn$l\n") if isdbg('command');
 642                                         return ($path, "$dirfn$l");
 643                                 }
 644                         }
 645                 }
 646         }
 647         return ();
 648 }
 649
 650 # clear the command name cache
 651 sub clear_cmd_cache
 652 {
 653         no strict 'refs';
 654
 655         for (keys %Cache) {
 656                 undef *{$_} unless /cmd_cache/;
 657                 dbg("Undefining cmd $_") if isdbg('command');
 658         }
 659         %cmd_cache = ();
 660         %Cache = ();
 661 }
 662
 663 #
 664 # the persistant execution of things from the command directories
 665 #
 666 #
 667 # This allows perl programs to call functions dynamically
 668 #
 669 # This has been nicked directly from the perlembed pages
 670 #
 671
 672 #require Devel::Symdump;
 673
 674 sub valid_package_name {
 675         my($string) = @_;
 676         $string =~ s|([^A-Za-z0-9_/])|sprintf("_%2x",unpack("C",$1))|eg;
 677
 678         $string =~ s|/|_|g;
 679         return "cmd_$string";
 680 }
 681
 682 #
 683 # this bit of magic finds a command in the offered directory
 684 sub find_cmd_name {
 685         my $path = shift;
 686         my $cmdname = shift;
 687         my $package = valid_package_name($cmdname);
 688         my $filename = "$path/$cmdname.pl";
 689         my $mtime = -M $filename;
 690
 691         # return if we can't find it
 692         $errstr = undef;
 693         unless (defined $mtime) {
 694                 $errstr = DXM::msg('e1');
 695                 return undef;
 696         }
 697
 698         if(defined $Cache{$package}->{mtime} &&$Cache{$package}->{mtime} <= $mtime) {
 699                 #we have compiled this subroutine already,
 700                 #it has not been updated on disk, nothing left to do
 701                 #print STDERR "already compiled $package->handler\n";
 702                 ;
 703         } else {
 704
 705                 my $sub = readfilestr($filename);
 706                 unless ($sub) {
 707                         $errstr = "Syserr: can't open '$filename' $!";
 708                         return undef;
 709                 };
 710
 711                 #wrap the code into a subroutine inside our unique package
 712                 my $eval = qq( sub $package { $sub } );
 713
 714                 if (isdbg('eval')) {
 715                         my @list = split /\n/, $eval;
 716                         my $line;
 717                         for (@list) {
 718                                 dbg($_ . "\n") if isdbg('eval');
 719                         }
 720                 }
 721
 722                 # get rid of any existing sub and try to compile the new one
 723                 no strict 'refs';
 724
 725                 if (exists $Cache{$package}) {
 726                         dbg("Redefining $package") if isdbg('command');
 727                         undef *$package;
 728                 } else {
 729                         dbg("Defining $package") if isdbg('command');
 730                 }
 731                 eval $eval;
 732
 733                 $Cache{$package} = {mtime => $mtime };
 734
 735         }
 736
 737         return $package;
 738 }
 739
 740 sub local_send
 741 {
 742         my ($self, $let, $buf) = @_;
 743         if ($self->{state} eq 'prompt' || $self->{state} eq 'talk') {
 744                 if ($self->{enhanced}) {
 745                         $self->send_later($let, $buf);
 746                 } else {
 747                         $self->send($buf);
 748                 }
 749         } else {
 750                 $self->delay($buf);
 751         }
 752 }
 753
 754 # send a talk message here
 755 sub talk
 756 {
 757         my ($self, $from, $to, $via, $line) = @_;
 758         $line =~ s/\\5E/\^/g;
 759         $self->local_send('T', "$to de $from: $line") if $self->{talk};
 760         Log('talk', $to, $from, $via?$via:$main::mycall, $line);
 761         # send a 'not here' message if required
 762         unless ($self->{here} && $from ne $to) {
 763                 my $key = "$to$from";
 764                 unless (exists $nothereslug{$key}) {
 765                         my ($ref, $dxchan);
 766                         if (($ref = Route::get($from)) && ($dxchan = $ref->dxchan)) {
 767                                 my $name = $self->user->name || $to;
 768                                 my $s = $self->user->nothere || $dxchan->msg('nothere', $name);
 769                                 $nothereslug{$key} = $main::systime;
 770                                 $dxchan->talk($to, $from, undef, $s);
 771                         }
 772                 }
 773         }
 774 }
 775
 776 # send an announce
 777 sub announce
 778 {
 779         my $self = shift;
 780         my $line = shift;
 781         my $isolate = shift;
 782         my $to = shift;
 783         my $target = shift;
 784         my $text = shift;
 785         my ($filter, $hops);
 786
 787         if (!$self->{ann_talk} && $to ne $self->{call}) {
 788                 my $call = AnnTalk::is_talk_candidate($_[0], $text);
 789                 return if $call;
 790         }
 791
 792         if ($self->{annfilter}) {
 793                 ($filter, $hops) = $self->{annfilter}->it(@_ );
 794                 return unless $filter;
 795         }
 796
 797         unless ($self->{ann}) {
 798                 return if $_[0] ne $main::myalias && $_[0] ne $main::mycall;
 799         }
 800         return if $target eq 'SYSOP' && $self->{priv} < 5;
 801         my $buf = "$to$target de $_[0]: $text";
 802         $buf =~ s/\%5E/^/g;
 803         $buf .= "\a\a" if $self->{beep};
 804         $self->local_send($target eq 'WX' ? 'W' : 'N', $buf);
 805 }
 806
 807 # send a chat
 808 sub chat
 809 {
 810         my $self = shift;
 811         my $line = shift;
 812         my $isolate = shift;
 813         my $target = shift;
 814         my $to = shift;
 815         my $text = shift;
 816         my ($filter, $hops);
 817
 818         return unless grep uc $_ eq $target, @{$self->{user}->{group}};
 819
 820         $text =~ s/^\#\d+ //;
 821         my $buf = "$target de $_[0]: $text";
 822         $buf =~ s/\%5E/^/g;
 823         $buf .= "\a\a" if $self->{beep};
 824         $self->local_send('C', $buf);
 825 }
 826
 827 sub format_dx_spot
 828 {
 829         my $self = shift;
 830
 831         my $t = ztime($_[2]);
 832         my $loc = '';
 833         my $clth = $self->{consort} eq 'local' ? 29 : 30;
 834         my $comment = substr $_[3], 0, $clth;
 835         $comment .= ' ' x ($clth - length($comment));
 836         if ($self->{user}->wantgrid) {
 837                 my $ref = DXUser->get_current($_[4]);
 838                 if ($ref) {
 839                         $loc = $ref->qra || '';
 840                         $loc = ' ' . substr($loc, 0, 4) if $loc;
 841                 }
 842         }
 843
 844         if ($self->{user}->wantdxitu) {
 845                 $loc = ' ' . sprintf("%2d", $_[10]) if defined $_[10];
 846                 $comment = substr($comment, 0,  $self->{consort} eq 'local' ? 26 : 27) . ' ' . sprintf("%2d", $_[8]) if defined $_[8];
 847         } elsif ($self->{user}->wantdxcq) {
 848                 $loc = ' ' . sprintf("%2d", $_[11]) if defined $_[11];
 849                 $comment = substr($comment, 0,  $self->{consort} eq 'local' ? 26 : 27) . ' ' . sprintf("%2d", $_[9]) if defined $_[9];
 850         } elsif ($self->{user}->wantusstate) {
 851                 $loc = ' ' . $_[13] if $_[13];
 852                 $comment = substr($comment, 0,  $self->{consort} eq 'local' ? 26 : 27) . ' ' . $_[12] if $_[12];
 853         }
 854
 855         return sprintf "DX de %-7.7s%11.1f  %-12.12s %-s $t$loc", "$_[4]:", $_[0], $_[1], $comment;
 856 }
 857
 858 # send a dx spot
 859 sub dx_spot
 860 {
 861         my $self = shift;
 862         my $line = shift;
 863         my $isolate = shift;
 864         return unless $self->{dx};
 865
 866         my ($filter, $hops);
 867
 868         if ($self->{spotsfilter}) {
 869                 ($filter, $hops) = $self->{spotsfilter}->it(@_ );
 870                 return unless $filter;
 871         }
 872
 873         dbg('spot: "' . join('","', @_) . '"') if isdbg('dxspot');
 874
 875         my $buf;
 876         if ($self->{ve7cc}) {
 877                 $buf = VE7CC::dx_spot($self, @_);
 878         } else {
 879                 $buf = $self->format_dx_spot(@_);
 880                 $buf .= "\a\a" if $self->{beep};
 881                 $buf =~ s/\%5E/^/g;
 882         }
 883
 884         $self->local_send('X', $buf);
 885 }
 886
 887 sub wwv
 888 {
 889         my $self = shift;
 890         my $line = shift;
 891         my $isolate = shift;
 892         my ($filter, $hops);
 893
 894         return unless $self->{wwv};
 895
 896         if ($self->{wwvfilter}) {
 897                 ($filter, $hops) = $self->{wwvfilter}->it(@_ );
 898                 return unless $filter;
 899         }
 900
 901         my $buf = "WWV de $_[6] <$_[1]>:   SFI=$_[2], A=$_[3], K=$_[4], $_[5]";
 902         $buf .= "\a\a" if $self->{beep};
 903         $self->local_send('V', $buf);
 904 }
 905
 906 sub wcy
 907 {
 908         my $self = shift;
 909         my $line = shift;
 910         my $isolate = shift;
 911         my ($filter, $hops);
 912
 913         return unless $self->{wcy};
 914
 915         if ($self->{wcyfilter}) {
 916                 ($filter, $hops) = $self->{wcyfilter}->it(@_ );
 917                 return unless $filter;
 918         }
 919
 920         my $buf = "WCY de $_[10] <$_[1]> : K=$_[4] expK=$_[5] A=$_[3] R=$_[6] SFI=$_[2] SA=$_[7] GMF=$_[8] Au=$_[9]";
 921         $buf .= "\a\a" if $self->{beep};
 922         $self->local_send('Y', $buf);
 923 }
 924
 925 # broadcast debug stuff to all interested parties
 926 sub broadcast_debug
 927 {
 928         my $s = shift;                          # the line to be rebroadcast
 929
 930         foreach my $dxchan (DXChannel->get_all) {
 931                 next unless $dxchan->{enhanced} && $dxchan->{senddbg};
 932                 $dxchan->send_later('L', $s);
 933         }
 934 }
 935
 936
 937 1;
 938 __END__