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 use Thingy;
  39 use Thingy::Dx;
  40 use Thingy::Hello;
  41 use Thingy::Bye;
  42
  43 use strict;
  44 use vars qw(%Cache %cmd_cache $errstr %aliases $scriptbase $maxerrors %nothereslug $maxbadcount $msgpolltime);
  45
  46 %Cache = ();                                    # cache of dynamically loaded routine's mod times
  47 %cmd_cache = ();                                # cache of short names
  48 $errstr = ();                                   # error string from eval
  49 %aliases = ();                                  # aliases for (parts of) commands
  50 $scriptbase = "$main::root/scripts"; # the place where all users start scripts go
  51 $maxerrors = 20;                                # the maximum number of concurrent errors allowed before disconnection
  52 $maxbadcount = 3;                               # no of bad words allowed before disconnection
  53 $msgpolltime = 3600;                    # the time between polls for new messages
  54
  55
  56 use vars qw($VERSION $BRANCH);
  57
  58 main::mkver($VERSION = q$Revision$);
  59
  60 #
  61 # obtain a new connection this is derived from dxchannel
  62 #
  63
  64 sub new
  65 {
  66         my $self = DXChannel::alloc(@_);
  67
  68         # routing, this must go out here to prevent race condx
  69         my $pkg = shift;
  70         my $call = shift;
  71         my @rout = $main::routeroot->add_user($call, Route::here(1));
  72
  73         # ALWAYS output the user
  74         my $thing = Thingy::Hello->new(user => $call);
  75         $thing->broadcast($self);
  76
  77         my $ref = Route::User::get($call);
  78         $main::me->route_pc16($main::mycall, undef, $main::routeroot, $ref) if $ref;
  79         return $self;
  80 }
  81
  82 # this is how a a connection starts, you get a hello message and the motd with
  83 # possibly some other messages asking you to set various things up if you are
  84 # new (or nearly new and slacking) user.
  85
  86 sub start
  87 {
  88         my ($self, $line, $sort) = @_;
  89         my $user = $self->{user};
  90         my $call = $self->{call};
  91         my $name = $user->{name};
  92
  93         # log it
  94         my $host = $self->{conn}->{peerhost} || "unknown";
  95         Log('DXCommand', "$call connected from $host");
  96
  97         $self->{name} = $name ? $name : $call;
  98         $self->send($self->msg('l2',$self->{name}));
  99         $self->state('prompt');         # a bit of room for further expansion, passwords etc
 100         $self->{priv} = $user->priv || 0;
 101         $self->{lang} = $user->lang || $main::lang || 'en';
 102         $self->{pagelth} = $user->pagelth || 20;
 103         ($self->{width}) = $line =~ /width=(\d+)/; $line =~ s/\s*width=\d+\s*//;
 104         $self->{width} = 80 unless $self->{width} && $self->{width} > 80;
 105         $self->{consort} = $line;       # save the connection type
 106
 107         # set some necessary flags on the user if they are connecting
 108         $self->{beep} = $user->wantbeep;
 109         $self->{ann} = $user->wantann;
 110         $self->{wwv} = $user->wantwwv;
 111         $self->{wcy} = $user->wantwcy;
 112         $self->{talk} = $user->wanttalk;
 113         $self->{wx} = $user->wantwx;
 114         $self->{dx} = $user->wantdx;
 115         $self->{logininfo} = $user->wantlogininfo;
 116         $self->{ann_talk} = $user->wantann_talk;
 117         $self->{here} = 1;
 118         $self->{prompt} = $user->prompt if $user->prompt;
 119
 120         # sort out new dx spot stuff
 121         $user->wantdxcq(0) unless defined $user->{wantdxcq};
 122         $user->wantdxitu(0) unless defined $user->{wantdxitu};
 123         $user->wantusstate(0) unless defined $user->{wantusstate};
 124
 125         # sort out registration
 126         if ($main::reqreg == 1) {
 127                 $self->{registered} = $user->registered;
 128         } elsif ($main::reqreg == 2) {
 129                 $self->{registered} = !$user->registered;
 130         } else {
 131                 $self->{registered} = 1;
 132         }
 133
 134
 135         # decide which motd to send
 136         my $motd;
 137         unless ($self->{registered}) {
 138                 $motd = "${main::motd}_nor_$self->{lang}";
 139                 $motd = "${main::motd}_nor" unless -e $motd;
 140         }
 141         $motd = "${main::motd}_$self->{lang}" unless $motd && -e $motd;
 142         $motd = $main::motd unless $motd && -e $motd;
 143         $self->send_file($motd) if -e $motd;
 144
 145         # sort out privilege reduction
 146         $self->{priv} = 0 if $line =~ /^(ax|te)/ && !$self->conn->{usedpasswd};
 147
 148         # get the filters
 149         $self->{spotsfilter} = Filter::read_in('spots', $call, 0) || Filter::read_in('spots', 'user_default', 0);
 150         $self->{wwvfilter} = Filter::read_in('wwv', $call, 0) || Filter::read_in('wwv', 'user_default', 0);
 151         $self->{wcyfilter} = Filter::read_in('wcy', $call, 0) || Filter::read_in('wcy', 'user_default', 0);
 152         $self->{annfilter} = Filter::read_in('ann', $call, 0) || Filter::read_in('ann', 'user_default', 0) ;
 153
 154         # clean up qra locators
 155         my $qra = $user->qra;
 156         $qra = undef if ($qra && !DXBearing::is_qra($qra));
 157         unless ($qra) {
 158                 my $lat = $user->lat;
 159                 my $long = $user->long;
 160                 $user->qra(DXBearing::lltoqra($lat, $long)) if (defined $lat && defined $long);
 161         }
 162
 163         # decide on echo
 164         my $echo = $user->wantecho;
 165         unless ($echo) {
 166                 $self->send_now('E', "0");
 167                 $self->send($self->msg('echow'));
 168                 $self->conn->echo($echo) if $self->conn->can('echo');
 169         }
 170
 171         $self->tell_login('loginu');
 172
 173         # do we need to send a forward/opernam?
 174         my $lastoper = $user->lastoper || 0;
 175         my $homenode = $user->homenode || "";
 176         if ($homenode eq $main::mycall && $main::systime >= $lastoper + $DXUser::lastoperinterval) {
 177                 run_cmd($main::me, "forward/opernam $call");
 178                 $user->lastoper($main::systime + ((int rand(10)) * 86400));
 179         }
 180
 181         # run a script send the output to the punter
 182         my $script = new Script(lc $call) || new Script('user_default');
 183         $script->run($self) if $script;
 184
 185         # send cluster info
 186         my $info = Route::cluster();
 187         $self->send("Cluster:$info");
 188
 189         # send prompts and things
 190         $self->send($self->msg('namee1')) if !$user->name;
 191         $self->send($self->msg('qthe1')) if !$user->qth;
 192         $self->send($self->msg('qll')) if !$user->qra || (!$user->lat && !$user->long);
 193         $self->send($self->msg('hnodee1')) if !$user->qth;
 194         $self->send($self->msg('m9')) if DXMsg::for_me($call);
 195         $self->lastmsgpoll($main::systime);
 196         $self->prompt;
 197 }
 198
 199 #
 200 # This is the normal command prompt driver
 201 #
 202
 203 sub normal
 204 {
 205         my $self = shift;
 206         my $cmdline = shift;
 207         my @ans;
 208
 209         # save this for them's that need it
 210         my $rawline = $cmdline;
 211
 212         # remove leading and trailing spaces
 213         $cmdline =~ s/^\s*(.*)\s*$/$1/;
 214
 215         if ($self->{state} eq 'page') {
 216                 my $i = $self->{pagelth};
 217                 my $ref = $self->{pagedata};
 218                 my $tot = @$ref;
 219
 220                 # abort if we get a line starting in with a
 221                 if ($cmdline =~ /^a/io) {
 222                         undef $ref;
 223                         $i = 0;
 224                 }
 225
 226                 # send a tranche of data
 227                 while ($i-- > 0 && @$ref) {
 228                         my $line = shift @$ref;
 229                         $line =~ s/\s+$//o;     # why am having to do this?
 230                         $self->send($line);
 231                 }
 232
 233                 # reset state if none or else chuck out an intermediate prompt
 234                 if ($ref && @$ref) {
 235                         $tot -= $self->{pagelth};
 236                         $self->send($self->msg('page', $tot));
 237                 } else {
 238                         $self->state('prompt');
 239                 }
 240         } elsif ($self->{state} eq 'sysop') {
 241                 my $passwd = $self->{user}->passwd;
 242                 if ($passwd) {
 243                         my @pw = grep {$_ !~ /\s/} split //, $passwd;
 244                         my @l = @{$self->{passwd}};
 245                         my $str = "$pw[$l[0]].*$pw[$l[1]].*$pw[$l[2]].*$pw[$l[3]].*$pw[$l[4]]";
 246                         if ($cmdline =~ /$str/) {
 247                                 $self->{priv} = $self->{user}->priv;
 248                         } else {
 249                                 $self->send($self->msg('sorry'));
 250                         }
 251                 } else {
 252                         $self->send($self->msg('sorry'));
 253                 }
 254                 $self->state('prompt');
 255         } elsif ($self->{state} eq 'passwd') {
 256                 my $passwd = $self->{user}->passwd;
 257                 if ($passwd && $cmdline eq $passwd) {
 258                         $self->send($self->msg('pw1'));
 259                         $self->state('passwd1');
 260                 } else {
 261                         $self->conn->{echo} = $self->conn->{decho};
 262                         delete $self->conn->{decho};
 263                         $self->send($self->msg('sorry'));
 264                         $self->state('prompt');
 265                 }
 266         } elsif ($self->{state} eq 'passwd1') {
 267                 $self->{passwd} = $cmdline;
 268                 $self->send($self->msg('pw2'));
 269                 $self->state('passwd2');
 270         } elsif ($self->{state} eq 'passwd2') {
 271                 if ($cmdline eq $self->{passwd}) {
 272                         $self->{user}->passwd($cmdline);
 273                         $self->send($self->msg('pw3'));
 274                 } else {
 275                         $self->send($self->msg('pw4'));
 276                 }
 277                 $self->conn->{echo} = $self->conn->{decho};
 278                 delete $self->conn->{decho};
 279                 $self->state('prompt');
 280         } elsif ($self->{state} eq 'talk') {
 281                 if ($cmdline =~ m{^(?:/EX|/ABORT)}i) {
 282                         for (@{$self->{talklist}}) {
 283                                 $self->send_talks($_,  $self->msg('talkend'));
 284                         }
 285                         $self->state('prompt');
 286                         delete $self->{talklist};
 287                 } elsif ($cmdline =~ m|^/+\w+|) {
 288                         $cmdline =~ s|^/||;
 289                         my $sendit = $cmdline =~ s|^/+||;
 290                         my @in = $self->run_cmd($cmdline);
 291                         $self->send_ans(@in);
 292                         if ($sendit && $self->{talklist} && @{$self->{talklist}}) {
 293                                 foreach my $l (@in) {
 294                                         my @bad;
 295                                         if (@bad = BadWords::check($l)) {
 296                                                 $self->badcount(($self->badcount||0) + @bad);
 297                                                 Log('DXCommand', "$self->{call} swore: $l");
 298                                         } else {
 299                                                 for (@{$self->{talklist}}) {
 300                                                         $self->send_talks($_, $l);
 301                                                 }
 302                                         }
 303                                 }
 304                         }
 305                         $self->send($self->talk_prompt);
 306                 } elsif ($self->{talklist} && @{$self->{talklist}}) {
 307                         # send what has been said to whoever is in this person's talk list
 308                         my @bad;
 309                         if (@bad = BadWords::check($cmdline)) {
 310                                 $self->badcount(($self->badcount||0) + @bad);
 311                                 Log('DXCommand', "$self->{call} swore: $cmdline");
 312                         } else {
 313                                 for (@{$self->{talklist}}) {
 314                                         $self->send_talks($_, $rawline);
 315                                 }
 316                         }
 317                         $self->send($self->talk_prompt) if $self->{state} eq 'talk';
 318                 } else {
 319                         # for safety
 320                         $self->state('prompt');
 321                 }
 322         } elsif (my $func = $self->{func}) {
 323                 no strict 'refs';
 324                 my @ans;
 325                 if (ref $self->{edit}) {
 326                         eval { @ans = $self->{edit}->$func($self, $rawline)};
 327                 } else {
 328                         eval {  @ans = &{$self->{func}}($self, $rawline) };
 329                 }
 330                 if ($@) {
 331                         $self->send_ans("Syserr: on stored func $self->{func}", $@);
 332                         delete $self->{func};
 333                         $self->state('prompt');
 334                         undef $@;
 335                 }
 336                 $self->send_ans(@ans);
 337         } else {
 338                 $self->send_ans(run_cmd($self, $cmdline));
 339         }
 340
 341         # check for excessive swearing
 342         if ($self->{badcount} && $self->{badcount} >= $maxbadcount) {
 343                 Log('DXCommand', "$self->{call} logged out for excessive swearing");
 344                 $self->disconnect;
 345                 return;
 346         }
 347
 348         # send a prompt only if we are in a prompt state
 349         $self->prompt() if $self->{state} =~ /^prompt/o;
 350 }
 351
 352 # send out the talk messages taking into account vias and connectivity
 353 sub send_talks
 354 {
 355         my ($self, $ent, $line) = @_;
 356
 357         my ($to, $via) = $ent =~ /(\S+)>(\S+)/;
 358         $to = $ent unless $to;
 359         my $call = $via ? $via : $to;
 360         my $clref = Route::get($call);
 361         my $dxchan = $clref->dxchan if $clref;
 362         if ($dxchan) {
 363                 $dxchan->talk($self->{call}, $to, $via, $line);
 364         } else {
 365                 $self->send($self->msg('disc2', $via ? $via : $to));
 366                 my @l = grep { $_ ne $ent } @{$self->{talklist}};
 367                 if (@l) {
 368                         $self->{talklist} = \@l;
 369                 } else {
 370                         delete $self->{talklist};
 371                         $self->state('prompt');
 372                 }
 373         }
 374 }
 375
 376 sub talk_prompt
 377 {
 378         my $self = shift;
 379         my @call;
 380         for (@{$self->{talklist}}) {
 381                 my ($to, $via) = /(\S+)>(\S+)/;
 382                 $to = $_ unless $to;
 383                 push @call, $to;
 384         }
 385         return $self->msg('talkprompt', join(',', @call));
 386 }
 387
 388 #
 389 # send a load of stuff to a command user with page prompting
 390 # and stuff
 391 #
 392
 393 sub send_ans
 394 {
 395         my $self = shift;
 396
 397         if ($self->{pagelth} && @_ > $self->{pagelth}) {
 398                 my $i;
 399                 for ($i = $self->{pagelth}; $i-- > 0; ) {
 400                         my $line = shift @_;
 401                         $line =~ s/\s+$//o;     # why am having to do this?
 402                         $self->send($line);
 403                 }
 404                 $self->{pagedata} =  [ @_ ];
 405                 $self->state('page');
 406                 $self->send($self->msg('page', scalar @_));
 407         } else {
 408                 for (@_) {
 409                         if (defined $_) {
 410                                 $self->send($_);
 411                         } else {
 412                                 $self->send('');
 413                         }
 414                 }
 415         }
 416 }
 417 #
 418 # this is the thing that runs the command, it is done like this for the
 419 # benefit of remote command execution
 420 #
 421
 422 sub run_cmd
 423 {
 424         my $self = shift;
 425         my $user = $self->{user};
 426         my $call = $self->{call};
 427         my $cmdline = shift;
 428         my @ans;
 429
 430
 431         return () if length $cmdline == 0;
 432
 433         # split the command line up into parts, the first part is the command
 434         my ($cmd, $args) = split /\s+/, $cmdline, 2;
 435         $args = "" unless defined $args;
 436
 437         if ($cmd) {
 438                 # strip out // on command only
 439                 $cmd =~ s|//|/|g;
 440
 441                 my ($path, $fcmd);
 442
 443                 dbg("cmd: $cmd") if isdbg('command');
 444
 445                 # alias it if possible
 446                 my $acmd = CmdAlias::get_cmd($cmd);
 447                 if ($acmd) {
 448                         ($cmd, $args) = split /\s+/, "$acmd $args", 2;
 449                         $args = "" unless defined $args;
 450                         dbg("aliased cmd: $cmd $args") if isdbg('command');
 451                 }
 452
 453                 # first expand out the entry to a command
 454                 ($path, $fcmd) = search($main::localcmd, $cmd, "pl");
 455                 ($path, $fcmd) = search($main::cmd, $cmd, "pl") if !$path || !$fcmd;
 456
 457                 if ($path && $cmd) {
 458                         dbg("path: $cmd cmd: $fcmd") if isdbg('command');
 459
 460                         my $package = find_cmd_name($path, $fcmd);
 461                         return ($@) if $@;
 462
 463                         if ($package) {
 464                                 no strict 'refs';
 465                                 dbg("package: $package") if isdbg('command');
 466                                 eval { @ans = &$package($self, $args) };
 467                                 return (DXDebug::shortmess($@)) if $@;
 468                         }
 469                 } else {
 470                         dbg("cmd: $cmd not found") if isdbg('command');
 471                         if (++$self->{errors} > $maxerrors) {
 472                                 $self->send($self->msg('e26'));
 473                                 $self->disconnect;
 474                                 return ();
 475                         } else {
 476                                 return ($self->msg('e1'));
 477                         }
 478                 }
 479         }
 480
 481         my $ok = shift @ans;
 482         if ($ok) {
 483                 delete $self->{errors};
 484         } else {
 485                 if (++$self->{errors} > $maxerrors) {
 486                         $self->send($self->msg('e26'));
 487                         $self->disconnect;
 488                         return ();
 489                 }
 490         }
 491         return map {s/([^\s])\s+$/$1/; $_} @ans;
 492 }
 493
 494 #
 495 # This is called from inside the main cluster processing loop and is used
 496 # for despatching commands that are doing some long processing job
 497 #
 498 sub process
 499 {
 500         my $t = time;
 501         my @dxchan = DXChannel->get_all();
 502         my $dxchan;
 503
 504         foreach $dxchan (@dxchan) {
 505                 next if $dxchan->sort ne 'U';
 506
 507                 # send a outstanding message prompt if required
 508                 if ($t >= $dxchan->lastmsgpoll + $msgpolltime) {
 509                         $dxchan->send($dxchan->msg('m9')) if DXMsg::for_me($dxchan->call);
 510                         $dxchan->lastmsgpoll($t);
 511                 }
 512
 513                 # send a prompt if no activity out on this channel
 514                 if ($t >= $dxchan->t + $main::user_interval) {
 515                         $dxchan->prompt() if $dxchan->{state} =~ /^prompt/o;
 516                         $dxchan->t($t);
 517                 }
 518         }
 519
 520         while (my ($k, $v) = each %nothereslug) {
 521                 if ($main::systime >= $v + 300) {
 522                         delete $nothereslug{$k};
 523                 }
 524         }
 525 }
 526
 527 #
 528 # finish up a user context
 529 #
 530 sub disconnect
 531 {
 532         my $self = shift;
 533         my $call = $self->call;
 534
 535         return if $self->{disconnecting}++;
 536
 537         delete $self->{senddbg};
 538
 539         my $uref = Route::User::get($call);
 540         my @rout;
 541         if ($uref) {
 542                 @rout = $main::routeroot->del_user($uref);
 543                 dbg("B/C PC17 on $main::mycall for: $call") if isdbg('route');
 544
 545                 # issue a pc17 to everybody interested
 546                 $main::me->route_pc17($main::mycall, undef, $main::routeroot, $uref);
 547
 548                 my $thing = Thingy::Bye->new(user=>$call);
 549                 $thing->broadcast($self);
 550         } else {
 551                 confess "trying to disconnect a non existant user $call";
 552         }
 553
 554         # I was the last node visited
 555     $self->user->node($main::mycall);
 556
 557         # send info to all logged in thingies
 558         $self->tell_login('logoutu');
 559
 560         Log('DXCommand', "$call disconnected");
 561
 562         $self->SUPER::disconnect;
 563 }
 564
 565 #
 566 # short cut to output a prompt
 567 #
 568
 569 sub prompt
 570 {
 571         my $self = shift;
 572         my $call = $self->call;
 573         my $date = cldate($main::systime);
 574         my $time = ztime($main::systime);
 575         my $prompt = $self->{prompt} || $self->msg('pr');
 576
 577         $call = "($call)" unless $self->here;
 578         $prompt =~ s/\%C/$call/g;
 579         $prompt =~ s/\%D/$date/g;
 580         $prompt =~ s/\%T/$time/g;
 581         $prompt =~ s/\%M/$main::mycall/g;
 582
 583         $self->send($prompt);
 584 }
 585
 586 # broadcast a message to all users [except those mentioned after buffer]
 587 sub broadcast
 588 {
 589         my $pkg = shift;                        # ignored
 590         my $s = shift;                          # the line to be rebroadcast
 591
 592     foreach my $dxchan (DXChannel->get_all()) {
 593                 next unless $dxchan->{sort} eq 'U'; # only interested in user channels
 594                 next if grep $dxchan == $_, @_;
 595                 $dxchan->send($s);                      # send it
 596         }
 597 }
 598
 599 # gimme all the users
 600 sub get_all
 601 {
 602         return grep {$_->{sort} eq 'U'} DXChannel->get_all();
 603 }
 604
 605 # run a script for this user
 606 sub run_script
 607 {
 608         my $self = shift;
 609         my $silent = shift || 0;
 610
 611 }
 612
 613 #
 614 # search for the command in the cache of short->long form commands
 615 #
 616
 617 sub search
 618 {
 619         my ($path, $short_cmd, $suffix) = @_;
 620         my ($apath, $acmd);
 621
 622         # commands are lower case
 623         $short_cmd = lc $short_cmd;
 624         dbg("command: $path $short_cmd\n") if isdbg('command');
 625
 626         # do some checking for funny characters
 627         return () if $short_cmd =~ /\/$/;
 628
 629         # return immediately if we have it
 630         ($apath, $acmd) = split ',', $cmd_cache{$short_cmd} if $cmd_cache{$short_cmd};
 631         if ($apath && $acmd) {
 632                 dbg("cached $short_cmd = ($apath, $acmd)\n") if isdbg('command');
 633                 return ($apath, $acmd);
 634         }
 635
 636         # if not guess
 637         my @parts = split '/', $short_cmd;
 638         my $dirfn;
 639         my $curdir = $path;
 640         my $p;
 641         my $i;
 642         my @lparts;
 643
 644         for ($i = 0; $i < @parts; $i++) {
 645                 my  $p = $parts[$i];
 646                 opendir(D, $curdir) or confess "can't open $curdir $!";
 647                 my @ls = readdir D;
 648                 closedir D;
 649                 my $l;
 650                 foreach $l (sort @ls) {
 651                         next if $l =~ /^\./;
 652                         if ($i < $#parts) {             # we are dealing with directories
 653                                 if ((-d "$curdir/$l") && $p eq substr($l, 0, length $p)) {
 654                                         dbg("got dir: $curdir/$l\n") if isdbg('command');
 655                                         $dirfn .= "$l/";
 656                                         $curdir .= "/$l";
 657                                         last;
 658                                 }
 659                         } else {                        # we are dealing with commands
 660                                 @lparts = split /\./, $l;
 661                                 next if $lparts[$#lparts] ne $suffix;        # only look for .$suffix files
 662                                 if ($p eq substr($l, 0, length $p)) {
 663                                         pop @lparts; #  remove the suffix
 664                                         $l = join '.', @lparts;
 665                                         #                 chop $dirfn;               # remove trailing /
 666                                         $dirfn = "" unless $dirfn;
 667                                         $cmd_cache{$short_cmd} = join(',', ($path, "$dirfn$l")); # cache it
 668                                         dbg("got path: $path cmd: $dirfn$l\n") if isdbg('command');
 669                                         return ($path, "$dirfn$l");
 670                                 }
 671                         }
 672                 }
 673         }
 674         return ();
 675 }
 676
 677 # clear the command name cache
 678 sub clear_cmd_cache
 679 {
 680         no strict 'refs';
 681
 682         for (keys %Cache) {
 683                 undef *{$_} unless /cmd_cache/;
 684                 dbg("Undefining cmd $_") if isdbg('command');
 685         }
 686         %cmd_cache = ();
 687         %Cache = ();
 688 }
 689
 690 #
 691 # the persistant execution of things from the command directories
 692 #
 693 #
 694 # This allows perl programs to call functions dynamically
 695 #
 696 # This has been nicked directly from the perlembed pages
 697 #
 698
 699 #require Devel::Symdump;
 700
 701 sub valid_package_name {
 702         my($string) = @_;
 703         $string =~ s|([^A-Za-z0-9_/])|sprintf("_%2x",unpack("C",$1))|eg;
 704
 705         $string =~ s|/|_|g;
 706         return "cmd_$string";
 707 }
 708
 709 #
 710 # this bit of magic finds a command in the offered directory
 711 sub find_cmd_name {
 712         my $path = shift;
 713         my $cmdname = shift;
 714         my $package = valid_package_name($cmdname);
 715         my $filename = "$path/$cmdname.pl";
 716         my $mtime = -M $filename;
 717
 718         # return if we can't find it
 719         $errstr = undef;
 720         unless (defined $mtime) {
 721                 $errstr = DXM::msg('e1');
 722                 return undef;
 723         }
 724
 725         if(defined $Cache{$package}->{mtime} &&$Cache{$package}->{mtime} <= $mtime) {
 726                 #we have compiled this subroutine already,
 727                 #it has not been updated on disk, nothing left to do
 728                 #print STDERR "already compiled $package->handler\n";
 729                 ;
 730         } else {
 731
 732                 my $sub = readfilestr($filename);
 733                 unless ($sub) {
 734                         $errstr = "Syserr: can't open '$filename' $!";
 735                         return undef;
 736                 };
 737
 738                 #wrap the code into a subroutine inside our unique package
 739                 my $eval = qq( sub $package { $sub } );
 740
 741                 if (isdbg('eval')) {
 742                         my @list = split /\n/, $eval;
 743                         my $line;
 744                         for (@list) {
 745                                 dbg($_ . "\n") if isdbg('eval');
 746                         }
 747                 }
 748
 749                 # get rid of any existing sub and try to compile the new one
 750                 no strict 'refs';
 751
 752                 if (exists $Cache{$package}) {
 753                         dbg("Redefining $package") if isdbg('command');
 754                         undef *$package;
 755                 } else {
 756                         dbg("Defining $package") if isdbg('command');
 757                 }
 758                 eval $eval;
 759
 760                 $Cache{$package} = {mtime => $mtime };
 761
 762         }
 763
 764         return $package;
 765 }
 766
 767 sub local_send
 768 {
 769         my ($self, $let, $buf) = @_;
 770         if ($self->{state} eq 'prompt' || $self->{state} eq 'talk') {
 771                 if ($self->{enhanced}) {
 772                         $self->send_later($let, $buf);
 773                 } else {
 774                         $self->send($buf);
 775                 }
 776         } else {
 777                 $self->delay($buf);
 778         }
 779 }
 780
 781 # send a talk message here
 782 sub talk
 783 {
 784         my ($self, $from, $to, $via, $line) = @_;
 785         $line =~ s/\\5E/\^/g;
 786         $self->local_send('T', "$to de $from: $line") if $self->{talk};
 787         Log('talk', $to, $from, $via?$via:$main::mycall, $line);
 788         # send a 'not here' message if required
 789         unless ($self->{here} && $from ne $to) {
 790                 my $key = "$to$from";
 791                 unless (exists $nothereslug{$key}) {
 792                         my ($ref, $dxchan);
 793                         if (($ref = Route::get($from)) && ($dxchan = $ref->dxchan)) {
 794                                 my $name = $self->user->name || $to;
 795                                 my $s = $self->user->nothere || $dxchan->msg('nothere', $name);
 796                                 $nothereslug{$key} = $main::systime;
 797                                 $dxchan->talk($to, $from, undef, $s);
 798                         }
 799                 }
 800         }
 801 }
 802
 803 # send an announce
 804 sub announce
 805 {
 806         my $self = shift;
 807         my $line = shift;
 808         my $isolate = shift;
 809         my $to = shift;
 810         my $target = shift;
 811         my $text = shift;
 812         my ($filter, $hops);
 813
 814         if (!$self->{ann_talk} && $to ne $self->{call}) {
 815                 my $call = AnnTalk::is_talk_candidate($_[0], $text);
 816                 return if $call;
 817         }
 818
 819         if ($self->{annfilter}) {
 820                 ($filter, $hops) = $self->{annfilter}->it(@_ );
 821                 return unless $filter;
 822         }
 823
 824         unless ($self->{ann}) {
 825                 return if $_[0] ne $main::myalias && $_[0] ne $main::mycall;
 826         }
 827         return if $target eq 'SYSOP' && $self->{priv} < 5;
 828         my $buf = "$to$target de $_[0]: $text";
 829         $buf =~ s/\%5E/^/g;
 830         $buf .= "\a\a" if $self->{beep};
 831         $self->local_send($target eq 'WX' ? 'W' : 'N', $buf);
 832 }
 833
 834 # send a chat
 835 sub chat
 836 {
 837         my $self = shift;
 838         my $line = shift;
 839         my $isolate = shift;
 840         my $target = shift;
 841         my $to = shift;
 842         my $text = shift;
 843         my ($filter, $hops);
 844
 845         return unless grep uc $_ eq $target, @{$self->{user}->{group}};
 846
 847         $text =~ s/^\#\d+ //;
 848         my $buf = "$target de $_[0]: $text";
 849         $buf =~ s/\%5E/^/g;
 850         $buf .= "\a\a" if $self->{beep};
 851         $self->local_send('C', $buf);
 852 }
 853
 854
 855 sub wwv
 856 {
 857         my $self = shift;
 858         my $line = shift;
 859         my $isolate = shift;
 860         my ($filter, $hops);
 861
 862         return unless $self->{wwv};
 863
 864         if ($self->{wwvfilter}) {
 865                 ($filter, $hops) = $self->{wwvfilter}->it(@_ );
 866                 return unless $filter;
 867         }
 868
 869         my $buf = "WWV de $_[6] <$_[1]>:   SFI=$_[2], A=$_[3], K=$_[4], $_[5]";
 870         $buf .= "\a\a" if $self->{beep};
 871         $self->local_send('V', $buf);
 872 }
 873
 874 sub wcy
 875 {
 876         my $self = shift;
 877         my $line = shift;
 878         my $isolate = shift;
 879         my ($filter, $hops);
 880
 881         return unless $self->{wcy};
 882
 883         if ($self->{wcyfilter}) {
 884                 ($filter, $hops) = $self->{wcyfilter}->it(@_ );
 885                 return unless $filter;
 886         }
 887
 888         my $buf = "WCY de $_[10] <$_[1]> : K=$_[4] expK=$_[5] A=$_[3] R=$_[6] SFI=$_[2] SA=$_[7] GMF=$_[8] Au=$_[9]";
 889         $buf .= "\a\a" if $self->{beep};
 890         $self->local_send('Y', $buf);
 891 }
 892
 893 # broadcast debug stuff to all interested parties
 894 sub broadcast_debug
 895 {
 896         my $s = shift;                          # the line to be rebroadcast
 897
 898         foreach my $dxchan (DXChannel->get_all) {
 899                 next unless $dxchan->{enhanced} && $dxchan->{senddbg};
 900                 $dxchan->send_later('L', $s);
 901         }
 902 }
 903
 904 sub do_entry_stuff
 905 {
 906         my $self = shift;
 907         my $line = shift;
 908         my @out;
 909
 910         if ($self->state eq 'enterbody') {
 911                 my $loc = $self->{loc} || confess "local var gone missing" ;
 912                 if ($line eq "\032" || $line eq '%1A' || uc $line eq "/EX") {
 913                         no strict 'refs';
 914                         push @out, &{$loc->{endaction}}($self);          # like this for < 5.8.0
 915                         $self->func(undef);
 916                         $self->state('prompt');
 917                 } elsif ($line eq "\031" || uc $line eq "/ABORT" || uc $line eq "/QUIT") {
 918                         push @out, $self->msg('m10');
 919                         delete $loc->{lines};
 920                         delete $self->{loc};
 921                         $self->func(undef);
 922                         $self->state('prompt');
 923                 } else {
 924                         push @{$loc->{lines}}, length($line) > 0 ? $line : " ";
 925                         # i.e. it ain't and end or abort, therefore store the line
 926                 }
 927         } else {
 928                 confess "Invalid state $self->{state}";
 929         }
 930         return @out;
 931 }
 932
 933 sub store_startup_script
 934 {
 935         my $self = shift;
 936         my $loc = $self->{loc} || confess "local var gone missing" ;
 937         my @out;
 938         my $call = $loc->{call} || confess "callsign gone missing";
 939         confess "lines array gone missing" unless ref $loc->{lines};
 940         my $r = Script::store($call, $loc->{lines});
 941         if (defined $r) {
 942                 if ($r) {
 943                         push @out, $self->msg('m19', $call, $r);
 944                 } else {
 945                         push @out, $self->msg('m20', $call);
 946                 }
 947         } else {
 948                 push @out, "error opening startup script $call $!";
 949         }
 950         return @out;
 951 }
 952
 953 1;
 954 __END__