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
  45                         $maxbadcount $msgpolltime $default_pagelth $cmdimportdir);
  46
  47 %Cache = ();                                    # cache of dynamically loaded routine's mod times
  48 %cmd_cache = ();                                # cache of short names
  49 $errstr = ();                                   # error string from eval
  50 %aliases = ();                                  # aliases for (parts of) commands
  51 $scriptbase = "$main::root/scripts"; # the place where all users start scripts go
  52 $maxerrors = 20;                                # the maximum number of concurrent errors allowed before disconnection
  53 $maxbadcount = 3;                               # no of bad words allowed before disconnection
  54 $msgpolltime = 3600;                    # the time between polls for new messages
  55 $default_pagelth = 20;                  # the default page length 0 = unlimited
  56 $cmdimportdir = "$main::root/cmd_import"; # the base directory for importing command scripts
  57                                           # this does not exist as default, you need to create it manually
  58
  59
  60
  61 use vars qw($VERSION $BRANCH);
  62
  63 main::mkver($VERSION = q$Revision$);
  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, 1);
  77
  78
  79         my $ref = Route::User::get($call);
  80         $main::me->route_pc16($main::mycall, undef, $main::routeroot, $ref) if $ref;
  81         return $self;
  82 }
  83
  84 # this is how a a connection starts, you get a hello message and the motd with
  85 # possibly some other messages asking you to set various things up if you are
  86 # new (or nearly new and slacking) user.
  87
  88 sub start
  89 {
  90         my ($self, $line, $sort) = @_;
  91         my $user = $self->{user};
  92         my $call = $self->{call};
  93         my $name = $user->{name};
  94
  95         # log it
  96         my $host = $self->{conn}->{peerhost} || "unknown";
  97         Log('DXCommand', "$call connected from $host");
  98
  99         $self->{name} = $name ? $name : $call;
 100         $self->send($self->msg('l2',$self->{name}));
 101         $self->state('prompt');         # a bit of room for further expansion, passwords etc
 102         $self->{priv} = $user->priv || 0;
 103         $self->{lang} = $user->lang || $main::lang || 'en';
 104         my $pagelth = $user->pagelth;
 105         $pagelth = $default_pagelth unless defined $pagelth;
 106         $self->{pagelth} = $pagelth;
 107         ($self->{width}) = $line =~ /width=(\d+)/; $line =~ s/\s*width=\d+\s*//;
 108         $self->{width} = 80 unless $self->{width} && $self->{width} > 80;
 109         $self->{consort} = $line;       # save the connection type
 110
 111         # set some necessary flags on the user if they are connecting
 112         $self->{beep} = $user->wantbeep;
 113         $self->{ann} = $user->wantann;
 114         $self->{wwv} = $user->wantwwv;
 115         $self->{wcy} = $user->wantwcy;
 116         $self->{talk} = $user->wanttalk;
 117         $self->{wx} = $user->wantwx;
 118         $self->{dx} = $user->wantdx;
 119         $self->{logininfo} = $user->wantlogininfo;
 120         $self->{ann_talk} = $user->wantann_talk;
 121         $self->{here} = 1;
 122         $self->{prompt} = $user->prompt if $user->prompt;
 123
 124         # sort out new dx spot stuff
 125         $user->wantdxcq(0) unless defined $user->{wantdxcq};
 126         $user->wantdxitu(0) unless defined $user->{wantdxitu};
 127         $user->wantusstate(0) unless defined $user->{wantusstate};
 128
 129         # sort out registration
 130         if ($main::reqreg == 1) {
 131                 $self->{registered} = $user->registered;
 132         } elsif ($main::reqreg == 2) {
 133                 $self->{registered} = !$user->registered;
 134         } else {
 135                 $self->{registered} = 1;
 136         }
 137
 138
 139         # decide which motd to send
 140         my $motd;
 141         unless ($self->{registered}) {
 142                 $motd = "${main::motd}_nor_$self->{lang}";
 143                 $motd = "${main::motd}_nor" unless -e $motd;
 144         }
 145         $motd = "${main::motd}_$self->{lang}" unless $motd && -e $motd;
 146         $motd = $main::motd unless $motd && -e $motd;
 147         $self->send_file($motd) if -e $motd;
 148
 149         # sort out privilege reduction
 150         $self->{priv} = 0 if $line =~ /^(ax|te)/ && !$self->conn->{usedpasswd};
 151
 152         # get the filters
 153         $self->{spotsfilter} = Filter::read_in('spots', $call, 0) || Filter::read_in('spots', 'user_default', 0);
 154         $self->{wwvfilter} = Filter::read_in('wwv', $call, 0) || Filter::read_in('wwv', 'user_default', 0);
 155         $self->{wcyfilter} = Filter::read_in('wcy', $call, 0) || Filter::read_in('wcy', 'user_default', 0);
 156         $self->{annfilter} = Filter::read_in('ann', $call, 0) || Filter::read_in('ann', 'user_default', 0) ;
 157
 158         # clean up qra locators
 159         my $qra = $user->qra;
 160         $qra = undef if ($qra && !DXBearing::is_qra($qra));
 161         unless ($qra) {
 162                 my $lat = $user->lat;
 163                 my $long = $user->long;
 164                 $user->qra(DXBearing::lltoqra($lat, $long)) if (defined $lat && defined $long);
 165         }
 166
 167         # decide on echo
 168         my $echo = $user->wantecho;
 169         unless ($echo) {
 170                 $self->send_now('E', "0");
 171                 $self->send($self->msg('echow'));
 172                 $self->conn->echo($echo) if $self->conn->can('echo');
 173         }
 174
 175         $self->tell_login('loginu');
 176
 177         # do we need to send a forward/opernam?
 178         my $lastoper = $user->lastoper || 0;
 179         my $homenode = $user->homenode || "";
 180         if ($homenode eq $main::mycall && $main::systime >= $lastoper + $DXUser::lastoperinterval) {
 181                 run_cmd($main::me, "forward/opernam $call");
 182                 $user->lastoper($main::systime + ((int rand(10)) * 86400));
 183         }
 184
 185         # ALWAYS output the user
 186         my $thing = Thingy::Hello->new(user => $call, h => $self->{here});
 187         $thing->broadcast($self);
 188         $self->lasthello($main::systime);
 189
 190         # run a script send the output to the punter
 191         my $script = new Script(lc $call) || new Script('user_default');
 192         $script->run($self) if $script;
 193
 194         # send cluster info
 195         my $info = Route::cluster();
 196         $self->send("Cluster:$info");
 197
 198         # send prompts and things
 199         $self->send($self->msg('namee1')) if !$user->name;
 200         $self->send($self->msg('qthe1')) if !$user->qth;
 201         $self->send($self->msg('qll')) if !$user->qra || (!$user->lat && !$user->long);
 202         $self->send($self->msg('hnodee1')) if !$user->qth;
 203         $self->send($self->msg('m9')) if DXMsg::for_me($call);
 204         $self->lastmsgpoll($main::systime);
 205         $self->prompt;
 206 }
 207
 208 #
 209 # This is the normal command prompt driver
 210 #
 211
 212 sub normal
 213 {
 214         my $self = shift;
 215         my $cmdline = shift;
 216         my @ans;
 217
 218         # save this for them's that need it
 219         my $rawline = $cmdline;
 220
 221         # remove leading and trailing spaces
 222         $cmdline =~ s/^\s*(.*)\s*$/$1/;
 223
 224         if ($self->{state} eq 'page') {
 225                 my $i = $self->{pagelth};
 226                 my $ref = $self->{pagedata};
 227                 my $tot = @$ref;
 228
 229                 # abort if we get a line starting in with a
 230                 if ($cmdline =~ /^a/io) {
 231                         undef $ref;
 232                         $i = 0;
 233                 }
 234
 235                 # send a tranche of data
 236                 while ($i-- > 0 && @$ref) {
 237                         my $line = shift @$ref;
 238                         $line =~ s/\s+$//o;     # why am having to do this?
 239                         $self->send($line);
 240                 }
 241
 242                 # reset state if none or else chuck out an intermediate prompt
 243                 if ($ref && @$ref) {
 244                         $tot -= $self->{pagelth};
 245                         $self->send($self->msg('page', $tot));
 246                 } else {
 247                         $self->state('prompt');
 248                 }
 249         } elsif ($self->{state} eq 'sysop') {
 250                 my $passwd = $self->{user}->passwd;
 251                 if ($passwd) {
 252                         my @pw = grep {$_ !~ /\s/} split //, $passwd;
 253                         my @l = @{$self->{passwd}};
 254                         my $str = "$pw[$l[0]].*$pw[$l[1]].*$pw[$l[2]].*$pw[$l[3]].*$pw[$l[4]]";
 255                         if ($cmdline =~ /$str/) {
 256                                 $self->{priv} = $self->{user}->priv;
 257                         } else {
 258                                 $self->send($self->msg('sorry'));
 259                         }
 260                 } else {
 261                         $self->send($self->msg('sorry'));
 262                 }
 263                 $self->state('prompt');
 264         } elsif ($self->{state} eq 'passwd') {
 265                 my $passwd = $self->{user}->passwd;
 266                 if ($passwd && $cmdline eq $passwd) {
 267                         $self->send($self->msg('pw1'));
 268                         $self->state('passwd1');
 269                 } else {
 270                         $self->conn->{echo} = $self->conn->{decho};
 271                         delete $self->conn->{decho};
 272                         $self->send($self->msg('sorry'));
 273                         $self->state('prompt');
 274                 }
 275         } elsif ($self->{state} eq 'passwd1') {
 276                 $self->{passwd} = $cmdline;
 277                 $self->send($self->msg('pw2'));
 278                 $self->state('passwd2');
 279         } elsif ($self->{state} eq 'passwd2') {
 280                 if ($cmdline eq $self->{passwd}) {
 281                         $self->{user}->passwd($cmdline);
 282                         $self->send($self->msg('pw3'));
 283                 } else {
 284                         $self->send($self->msg('pw4'));
 285                 }
 286                 $self->conn->{echo} = $self->conn->{decho};
 287                 delete $self->conn->{decho};
 288                 $self->state('prompt');
 289         } elsif ($self->{state} eq 'talk') {
 290                 if ($cmdline =~ m{^(?:/EX|/ABORT)}i) {
 291                         for (@{$self->{talklist}}) {
 292                                 $self->send_talks($_,  $self->msg('talkend'));
 293                         }
 294                         $self->state('prompt');
 295                         delete $self->{talklist};
 296                 } elsif ($cmdline =~ m|^/+\w+|) {
 297                         $cmdline =~ s|^/||;
 298                         my $sendit = $cmdline =~ s|^/+||;
 299                         my @in = $self->run_cmd($cmdline);
 300                         $self->send_ans(@in);
 301                         if ($sendit && $self->{talklist} && @{$self->{talklist}}) {
 302                                 foreach my $l (@in) {
 303                                         my @bad;
 304                                         if (@bad = BadWords::check($l)) {
 305                                                 $self->badcount(($self->badcount||0) + @bad);
 306                                                 Log('DXCommand', "$self->{call} swore: $l");
 307                                         } else {
 308                                                 for (@{$self->{talklist}}) {
 309                                                         $self->send_talks($_, $l);
 310                                                 }
 311                                         }
 312                                 }
 313                         }
 314                         $self->send($self->talk_prompt);
 315                 } elsif ($self->{talklist} && @{$self->{talklist}}) {
 316                         # send what has been said to whoever is in this person's talk list
 317                         my @bad;
 318                         if (@bad = BadWords::check($cmdline)) {
 319                                 $self->badcount(($self->badcount||0) + @bad);
 320                                 Log('DXCommand', "$self->{call} swore: $cmdline");
 321                         } else {
 322                                 for (@{$self->{talklist}}) {
 323                                         $self->send_talks($_, $rawline);
 324                                 }
 325                         }
 326                         $self->send($self->talk_prompt) if $self->{state} eq 'talk';
 327                 } else {
 328                         # for safety
 329                         $self->state('prompt');
 330                 }
 331         } elsif (my $func = $self->{func}) {
 332                 no strict 'refs';
 333                 my @ans;
 334                 if (ref $self->{edit}) {
 335                         eval { @ans = $self->{edit}->$func($self, $rawline)};
 336                 } else {
 337                         eval {  @ans = &{$self->{func}}($self, $rawline) };
 338                 }
 339                 if ($@) {
 340                         $self->send_ans("Syserr: on stored func $self->{func}", $@);
 341                         delete $self->{func};
 342                         $self->state('prompt');
 343                         undef $@;
 344                 }
 345                 $self->send_ans(@ans);
 346         } else {
 347                 $self->send_ans(run_cmd($self, $cmdline));
 348         }
 349
 350         # check for excessive swearing
 351         if ($self->{badcount} && $self->{badcount} >= $maxbadcount) {
 352                 Log('DXCommand', "$self->{call} logged out for excessive swearing");
 353                 $self->disconnect;
 354                 return;
 355         }
 356
 357         # send a prompt only if we are in a prompt state
 358         $self->prompt() if $self->{state} =~ /^prompt/o;
 359 }
 360
 361 # send out the talk messages taking into account vias and connectivity
 362 sub send_talks
 363 {
 364         my ($self, $ent, $line) = @_;
 365
 366         my ($to, $via) = $ent =~ /(\S+)>(\S+)/;
 367         $to = $ent unless $to;
 368         my $call = $via ? $via : $to;
 369         my $clref = Route::get($call);
 370         my $dxchan = $clref->dxchan if $clref;
 371         if ($dxchan) {
 372                 $dxchan->talk($self->{call}, $to, $via, $line);
 373         } else {
 374                 $self->send($self->msg('disc2', $via ? $via : $to));
 375                 my @l = grep { $_ ne $ent } @{$self->{talklist}};
 376                 if (@l) {
 377                         $self->{talklist} = \@l;
 378                 } else {
 379                         delete $self->{talklist};
 380                         $self->state('prompt');
 381                 }
 382         }
 383 }
 384
 385 sub talk_prompt
 386 {
 387         my $self = shift;
 388         my @call;
 389         for (@{$self->{talklist}}) {
 390                 my ($to, $via) = /(\S+)>(\S+)/;
 391                 $to = $_ unless $to;
 392                 push @call, $to;
 393         }
 394         return $self->msg('talkprompt', join(',', @call));
 395 }
 396
 397 #
 398 # send a load of stuff to a command user with page prompting
 399 # and stuff
 400 #
 401
 402 sub send_ans
 403 {
 404         my $self = shift;
 405
 406         if ($self->{pagelth} && @_ > $self->{pagelth}) {
 407                 my $i;
 408                 for ($i = $self->{pagelth}; $i-- > 0; ) {
 409                         my $line = shift @_;
 410                         $line =~ s/\s+$//o;     # why am having to do this?
 411                         $self->send($line);
 412                 }
 413                 $self->{pagedata} =  [ @_ ];
 414                 $self->state('page');
 415                 $self->send($self->msg('page', scalar @_));
 416         } else {
 417                 for (@_) {
 418                         if (defined $_) {
 419                                 $self->send($_);
 420                         } else {
 421                                 $self->send('');
 422                         }
 423                 }
 424         }
 425 }
 426 #
 427 # this is the thing that runs the command, it is done like this for the
 428 # benefit of remote command execution
 429 #
 430
 431 sub run_cmd
 432 {
 433         my $self = shift;
 434         my $user = $self->{user};
 435         my $call = $self->{call};
 436         my $cmdline = shift;
 437         my @ans;
 438
 439
 440         return () if length $cmdline == 0;
 441
 442         # split the command line up into parts, the first part is the command
 443         my ($cmd, $args) = split /\s+/, $cmdline, 2;
 444         $args = "" unless defined $args;
 445
 446         if ($cmd) {
 447                 # strip out // and .. on command only
 448                 $cmd =~ s|//|/|g;
 449                 $cmd =~ s|^/||g;                # no leading / either
 450                 $cmd =~ s|[^-?\w/]||g;  # and no funny characters
 451
 452                 my ($path, $fcmd);
 453
 454                 dbg("cmd: $cmd") if isdbg('command');
 455
 456                 # alias it if possible
 457                 my $acmd = CmdAlias::get_cmd($cmd);
 458                 if ($acmd) {
 459                         ($cmd, $args) = split /\s+/, "$acmd $args", 2;
 460                         $args = "" unless defined $args;
 461                         dbg("aliased cmd: $cmd $args") if isdbg('command');
 462                 }
 463
 464                 # first expand out the entry to a command
 465                 ($path, $fcmd) = search($main::localcmd, $cmd, "pl");
 466                 ($path, $fcmd) = search($main::cmd, $cmd, "pl") unless $path && $fcmd;
 467
 468                 if ($path && $cmd) {
 469                         dbg("path: $cmd cmd: $fcmd") if isdbg('command');
 470
 471                         my $package = find_cmd_name($path, $fcmd);
 472                         return ($@) if $@;
 473
 474                         if ($package) {
 475                                 no strict 'refs';
 476                                 dbg("package: $package") if isdbg('command');
 477                                 eval { @ans = &$package($self, $args) };
 478                                 return (DXDebug::shortmess($@)) if $@;
 479                         }
 480                 } else {
 481                         dbg("cmd: $cmd not found") if isdbg('command');
 482                         if (++$self->{errors} > $maxerrors) {
 483                                 $self->send($self->msg('e26'));
 484                                 $self->disconnect;
 485                                 return ();
 486                         } else {
 487                                 return ($self->msg('e1'));
 488                         }
 489                 }
 490         }
 491
 492         my $ok = shift @ans;
 493         if ($ok) {
 494                 delete $self->{errors};
 495         } else {
 496                 if (++$self->{errors} > $maxerrors) {
 497                         $self->send($self->msg('e26'));
 498                         $self->disconnect;
 499                         return ();
 500                 }
 501         }
 502         return map {s/([^\s])\s+$/$1/; $_} @ans;
 503 }
 504
 505 #
 506 # This is called from inside the main cluster processing loop and is used
 507 # for despatching commands that are doing some long processing job
 508 #
 509 sub process
 510 {
 511         my $t = time;
 512         my @dxchan = DXChannel::get_all();
 513         my $dxchan;
 514
 515         foreach $dxchan (@dxchan) {
 516                 next if $dxchan->sort ne 'U';
 517
 518                 # send a outstanding message prompt if required
 519                 if ($t >= $dxchan->lastmsgpoll + $msgpolltime) {
 520                         $dxchan->send($dxchan->msg('m9')) if DXMsg::for_me($dxchan->call);
 521                         $dxchan->lastmsgpoll($t);
 522                 }
 523
 524                 # send a prompt if no activity out on this channel
 525                 if ($t >= $dxchan->t + $main::user_interval) {
 526                         $dxchan->prompt() if $dxchan->{state} =~ /^prompt/o;
 527                         $dxchan->t($t);
 528                 }
 529         }
 530
 531         while (my ($k, $v) = each %nothereslug) {
 532                 if ($main::systime >= $v + 300) {
 533                         delete $nothereslug{$k};
 534                 }
 535         }
 536
 537         import_cmd();
 538 }
 539
 540 #
 541 # finish up a user context
 542 #
 543 sub disconnect
 544 {
 545         my $self = shift;
 546         my $call = $self->call;
 547
 548         return if $self->{disconnecting}++;
 549
 550         delete $self->{senddbg};
 551
 552         my $uref = Route::User::get($call);
 553         my @rout;
 554         if ($uref) {
 555                 @rout = $main::routeroot->del_user($uref);
 556                 dbg("B/C PC17 on $main::mycall for: $call") if isdbg('route');
 557
 558                 # issue a pc17 to everybody interested
 559                 $main::me->route_pc17($main::mycall, undef, $main::routeroot, $uref);
 560
 561                 my $thing = Thingy::Bye->new(user=>$call);
 562                 $thing->broadcast($self);
 563         } else {
 564                 confess "trying to disconnect a non existant user $call";
 565         }
 566
 567         # I was the last node visited
 568     $self->user->node($main::mycall);
 569
 570         # send info to all logged in thingies
 571         $self->tell_login('logoutu');
 572
 573         # remove any outstanding pings I have sent
 574         Thingy::Ping::forget($call);
 575
 576         Log('DXCommand', "$call disconnected");
 577
 578         $self->SUPER::disconnect;
 579 }
 580
 581 #
 582 # short cut to output a prompt
 583 #
 584
 585 sub prompt
 586 {
 587         my $self = shift;
 588         my $call = $self->call;
 589         my $date = cldate($main::systime);
 590         my $time = ztime($main::systime);
 591         my $prompt = $self->{prompt} || $self->msg('pr');
 592
 593         $call = "($call)" unless $self->here;
 594         $prompt =~ s/\%C/$call/g;
 595         $prompt =~ s/\%D/$date/g;
 596         $prompt =~ s/\%T/$time/g;
 597         $prompt =~ s/\%M/$main::mycall/g;
 598
 599         $self->send($prompt);
 600 }
 601
 602 # broadcast a message to all users [except those mentioned after buffer]
 603 sub broadcast
 604 {
 605         my $pkg = shift;                        # ignored
 606         my $s = shift;                          # the line to be rebroadcast
 607
 608     foreach my $dxchan (DXChannel::get_all()) {
 609                 next unless $dxchan->{sort} eq 'U'; # only interested in user channels
 610                 next if grep $dxchan == $_, @_;
 611                 $dxchan->send($s);                      # send it
 612         }
 613 }
 614
 615 # gimme all the users
 616 sub get_all
 617 {
 618         return grep {$_->{sort} eq 'U'} DXChannel::get_all();
 619 }
 620
 621 #
 622 # search for the command in the cache of short->long form commands
 623 #
 624
 625 sub search
 626 {
 627         my ($path, $short_cmd, $suffix) = @_;
 628         my ($apath, $acmd);
 629
 630         # commands are lower case
 631         $short_cmd = lc $short_cmd;
 632         dbg("command: $path $short_cmd\n") if isdbg('command');
 633
 634         # do some checking for funny characters
 635         return () if $short_cmd =~ /\/$/;
 636
 637         # return immediately if we have it
 638         ($apath, $acmd) = split ',', $cmd_cache{$short_cmd} if $cmd_cache{$short_cmd};
 639         if ($apath && $acmd) {
 640                 dbg("cached $short_cmd = ($apath, $acmd)\n") if isdbg('command');
 641                 return ($apath, $acmd);
 642         }
 643
 644         # if not guess
 645         my @parts = split '/', $short_cmd;
 646         my $dirfn;
 647         my $curdir = $path;
 648
 649         while (my $p = shift @parts) {
 650                 opendir(D, $curdir) or confess "can't open $curdir $!";
 651                 my @ls = readdir D;
 652                 closedir D;
 653
 654                 # if this isn't the last part
 655                 if (@parts) {
 656                         my $found;
 657                         foreach my $l (sort @ls) {
 658                                 next if $l =~ /^\./;
 659                                 if ((-d "$curdir/$l") && $p eq substr($l, 0, length $p)) {
 660                                         dbg("got dir: $curdir/$l\n") if isdbg('command');
 661                                         $dirfn .= "$l/";
 662                                         $curdir .= "/$l";
 663                                         $found++;
 664                                         last;
 665                                 }
 666                         }
 667                         # only proceed if we find the directory asked for
 668                         return () unless $found;
 669                 } else {
 670                         foreach my $l (sort @ls) {
 671                                 next if $l =~ /^\./;
 672                                 next unless $l =~ /\.$suffix$/;
 673                                 if ($p eq substr($l, 0, length $p)) {
 674                                         $l =~ s/\.$suffix$//;
 675                                         $dirfn = "" unless $dirfn;
 676                                         $cmd_cache{$short_cmd} = join(',', ($path, "$dirfn$l")); # cache it
 677                                         dbg("got path: $path cmd: $dirfn$l\n") if isdbg('command');
 678                                         return ($path, "$dirfn$l");
 679                                 }
 680                         }
 681                 }
 682         }
 683         return ();
 684 }
 685
 686 # clear the command name cache
 687 sub clear_cmd_cache
 688 {
 689         no strict 'refs';
 690
 691         for (keys %Cache) {
 692                 undef *{$_} unless /cmd_cache/;
 693                 dbg("Undefining cmd $_") if isdbg('command');
 694         }
 695         %cmd_cache = ();
 696         %Cache = ();
 697 }
 698
 699 #
 700 # the persistant execution of things from the command directories
 701 #
 702 #
 703 # This allows perl programs to call functions dynamically
 704 #
 705 # This has been nicked directly from the perlembed pages
 706 #
 707
 708 #require Devel::Symdump;
 709
 710 sub valid_package_name {
 711         my($string) = @_;
 712         $string =~ s|([^A-Za-z0-9_/])|sprintf("_%2x",unpack("C",$1))|eg;
 713
 714         $string =~ s|/|_|g;
 715         return "cmd_$string";
 716 }
 717
 718 #
 719 # this bit of magic finds a command in the offered directory
 720 sub find_cmd_name {
 721         my $path = shift;
 722         my $cmdname = shift;
 723         my $package = valid_package_name($cmdname);
 724         my $filename = "$path/$cmdname.pl";
 725         my $mtime = -M $filename;
 726
 727         # return if we can't find it
 728         $errstr = undef;
 729         unless (defined $mtime) {
 730                 $errstr = DXM::msg('e1');
 731                 return undef;
 732         }
 733
 734         if(defined $Cache{$package}->{mtime} &&$Cache{$package}->{mtime} <= $mtime) {
 735                 #we have compiled this subroutine already,
 736                 #it has not been updated on disk, nothing left to do
 737                 #print STDERR "already compiled $package->handler\n";
 738                 ;
 739         } else {
 740
 741                 my $sub = readfilestr($filename);
 742                 unless ($sub) {
 743                         $errstr = "Syserr: can't open '$filename' $!";
 744                         return undef;
 745                 };
 746
 747                 #wrap the code into a subroutine inside our unique package
 748                 my $eval = qq( sub $package { $sub } );
 749
 750                 if (isdbg('eval')) {
 751                         my @list = split /\n/, $eval;
 752                         my $line;
 753                         for (@list) {
 754                                 dbg($_ . "\n") if isdbg('eval');
 755                         }
 756                 }
 757
 758                 # get rid of any existing sub and try to compile the new one
 759                 no strict 'refs';
 760
 761                 if (exists $Cache{$package}) {
 762                         dbg("Redefining $package") if isdbg('command');
 763                         undef *$package;
 764                 } else {
 765                         dbg("Defining $package") if isdbg('command');
 766                 }
 767                 eval $eval;
 768
 769                 $Cache{$package} = {mtime => $mtime };
 770
 771         }
 772
 773         return $package;
 774 }
 775
 776 sub local_send
 777 {
 778         my ($self, $let, $buf) = @_;
 779         if ($self->{state} eq 'prompt' || $self->{state} eq 'talk') {
 780                 if ($self->{enhanced}) {
 781                         $self->send_later($let, $buf);
 782                 } else {
 783                         $self->send($buf);
 784                 }
 785         } else {
 786                 $self->delay($buf);
 787         }
 788 }
 789
 790 # send a talk message here
 791 sub talk
 792 {
 793         my ($self, $from, $to, $via, $line) = @_;
 794         $line =~ s/\\5E/\^/g;
 795         $self->local_send('T', "$to de $from: $line") if $self->{talk};
 796         Log('talk', $to, $from, $via?$via:$main::mycall, $line);
 797         # send a 'not here' message if required
 798         unless ($self->{here} && $from ne $to) {
 799                 my $key = "$to$from";
 800                 unless (exists $nothereslug{$key}) {
 801                         my ($ref, $dxchan);
 802                         if (($ref = Route::get($from)) && ($dxchan = $ref->dxchan)) {
 803                                 my $name = $self->user->name || $to;
 804                                 my $s = $self->user->nothere || $dxchan->msg('nothere', $name);
 805                                 $nothereslug{$key} = $main::systime;
 806                                 $dxchan->talk($to, $from, undef, $s);
 807                         }
 808                 }
 809         }
 810 }
 811
 812 # send an announce
 813 sub announce
 814 {
 815         my $self = shift;
 816         my $line = shift;
 817         my $isolate = shift;
 818         my $to = shift;
 819         my $target = shift;
 820         my $text = shift;
 821         my ($filter, $hops);
 822
 823         if (!$self->{ann_talk} && $to ne $self->{call}) {
 824                 my $call = AnnTalk::is_talk_candidate($_[0], $text);
 825                 return if $call;
 826         }
 827
 828         if ($self->{annfilter}) {
 829                 ($filter, $hops) = $self->{annfilter}->it(@_ );
 830                 return unless $filter;
 831         }
 832
 833         unless ($self->{ann}) {
 834                 return if $_[0] ne $main::myalias && $_[0] ne $main::mycall;
 835         }
 836         return if $target eq 'SYSOP' && $self->{priv} < 5;
 837         my $buf = "$to$target de $_[0]: $text";
 838         $buf =~ s/\%5E/^/g;
 839         $buf .= "\a\a" if $self->{beep};
 840         $self->local_send($target eq 'WX' ? 'W' : 'N', $buf);
 841 }
 842
 843 # send a chat
 844 sub chat
 845 {
 846         my $self = shift;
 847         my $line = shift;
 848         my $isolate = shift;
 849         my $target = shift;
 850         my $to = shift;
 851         my $text = shift;
 852         my ($filter, $hops);
 853
 854         return unless grep uc $_ eq $target, @{$self->{user}->{group}};
 855
 856         $text =~ s/^\#\d+ //;
 857         my $buf = "$target de $_[0]: $text";
 858         $buf =~ s/\%5E/^/g;
 859         $buf .= "\a\a" if $self->{beep};
 860         $self->local_send('C', $buf);
 861 }
 862
 863
 864 sub wwv
 865 {
 866         my $self = shift;
 867         my $line = shift;
 868         my $isolate = shift;
 869         my ($filter, $hops);
 870
 871         return unless $self->{wwv};
 872
 873         if ($self->{wwvfilter}) {
 874                 ($filter, $hops) = $self->{wwvfilter}->it(@_ );
 875                 return unless $filter;
 876         }
 877
 878         my $buf = "WWV de $_[6] <$_[1]>:   SFI=$_[2], A=$_[3], K=$_[4], $_[5]";
 879         $buf .= "\a\a" if $self->{beep};
 880         $self->local_send('V', $buf);
 881 }
 882
 883 sub wcy
 884 {
 885         my $self = shift;
 886         my $line = shift;
 887         my $isolate = shift;
 888         my ($filter, $hops);
 889
 890         return unless $self->{wcy};
 891
 892         if ($self->{wcyfilter}) {
 893                 ($filter, $hops) = $self->{wcyfilter}->it(@_ );
 894                 return unless $filter;
 895         }
 896
 897         my $buf = "WCY de $_[10] <$_[1]> : K=$_[4] expK=$_[5] A=$_[3] R=$_[6] SFI=$_[2] SA=$_[7] GMF=$_[8] Au=$_[9]";
 898         $buf .= "\a\a" if $self->{beep};
 899         $self->local_send('Y', $buf);
 900 }
 901
 902 # broadcast debug stuff to all interested parties
 903 sub broadcast_debug
 904 {
 905         my $s = shift;                          # the line to be rebroadcast
 906
 907         foreach my $dxchan (DXChannel::get_all) {
 908                 next unless $dxchan->{enhanced} && $dxchan->{senddbg};
 909                 $dxchan->send_later('L', $s);
 910         }
 911 }
 912
 913 sub do_entry_stuff
 914 {
 915         my $self = shift;
 916         my $line = shift;
 917         my @out;
 918
 919         if ($self->state eq 'enterbody') {
 920                 my $loc = $self->{loc} || confess "local var gone missing" ;
 921                 if ($line eq "\032" || $line eq '%1A' || uc $line eq "/EX") {
 922                         no strict 'refs';
 923                         push @out, &{$loc->{endaction}}($self);          # like this for < 5.8.0
 924                         $self->func(undef);
 925                         $self->state('prompt');
 926                 } elsif ($line eq "\031" || uc $line eq "/ABORT" || uc $line eq "/QUIT") {
 927                         push @out, $self->msg('m10');
 928                         delete $loc->{lines};
 929                         delete $self->{loc};
 930                         $self->func(undef);
 931                         $self->state('prompt');
 932                 } else {
 933                         push @{$loc->{lines}}, length($line) > 0 ? $line : " ";
 934                         # i.e. it ain't and end or abort, therefore store the line
 935                 }
 936         } else {
 937                 confess "Invalid state $self->{state}";
 938         }
 939         return @out;
 940 }
 941
 942 sub store_startup_script
 943 {
 944         my $self = shift;
 945         my $loc = $self->{loc} || confess "local var gone missing" ;
 946         my @out;
 947         my $call = $loc->{call} || confess "callsign gone missing";
 948         confess "lines array gone missing" unless ref $loc->{lines};
 949         my $r = Script::store($call, $loc->{lines});
 950         if (defined $r) {
 951                 if ($r) {
 952                         push @out, $self->msg('m19', $call, $r);
 953                 } else {
 954                         push @out, $self->msg('m20', $call);
 955                 }
 956         } else {
 957                 push @out, "error opening startup script $call $!";
 958         }
 959         return @out;
 960 }
 961
 962 # Import any commands contained in any files in import_cmd directory
 963 #
 964 # If the filename has a recogisable callsign as some delimited part
 965 # of it, then this is the user the command will be run as.
 966 #
 967 sub import_cmd
 968 {
 969         # are there any to do in this directory?
 970         return unless -d $cmdimportdir;
 971         unless (opendir(DIR, $cmdimportdir)) {
 972                 dbg("can\'t open $cmdimportdir $!");
 973                 Log('err', "can\'t open $cmdimportdir $!");
 974                 return;
 975         }
 976
 977         my @names = readdir(DIR);
 978         closedir(DIR);
 979         my $name;
 980         foreach $name (@names) {
 981                 next if $name =~ /^\./;
 982
 983                 my $s = Script->new($name, $cmdimportdir);
 984                 if ($s) {
 985
 986                         dbg("Run import cmd file $name");
 987                         Log('DXCommand', "Run import cmd file $name");
 988                         my @cat = split /[^A-Za-z0-9]+/, $name;
 989                         my ($call) = grep {is_callsign(uc $_)} @cat;
 990                         $call ||= $main::mycall;
 991                         $call = uc $call;
 992                         my @out;
 993
 994
 995                         $s->inscript(0);        # switch off script checks
 996
 997                         if ($call eq $main::mycall) {
 998                                 @out = $s->run($main::me, 1);
 999                         } else {
1000                                 my $dxchan = DXChannel::get($call);
1001                             if ($dxchan) {
1002                                         @out = $s->run($dxchan, 1);
1003                                 } else {
1004                                         my $u = DXUser->get($call);
1005                                         if ($u) {
1006                                                 $dxchan = $main::me;
1007                                                 my $old = $dxchan->{call};
1008                                                 my $priv = $dxchan->{priv};
1009                                                 my $user = $dxchan->{user};
1010                                                 $dxchan->{call} = $call;
1011                                                 $dxchan->{priv} = $u->priv;
1012                                                 $dxchan->{user} = $u;
1013                                                 @out = $s->run($dxchan, 1);
1014                                                 $dxchan->{call} = $call;
1015                                                 $dxchan->{priv} = $priv;
1016                                                 $dxchan->{user} = $user;
1017                                         } else {
1018                                                 Log('err', "Trying to run import cmd for non-existant user $call");
1019                                                 dbg( "Trying to run import cmd for non-existant user $call");
1020                                         }
1021                                 }
1022                         }
1023                         $s->erase;
1024                         for (@out) {
1025                                 Log('DXCommand', "Import cmd $name/$call: $_");
1026                                 dbg("Import cmd $name/$call: $_");
1027                         }
1028                 } else {
1029                         Log("Failed to open $cmdimportdir/$name $!");
1030                         dbg("Failed to open $cmdimportdir/$name $!");
1031                         unlink "$cmdimportdir/$name";
1032                 }
1033         }
1034 }
1035
1036 1;
1037 __END__