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 DXXml;
  39
  40 use strict;
  41 use vars qw(%Cache %cmd_cache $errstr %aliases $scriptbase $maxerrors %nothereslug
  42         $maxbadcount $msgpolltime $default_pagelth $cmdimportdir);
  43
  44 %Cache = ();                                    # cache of dynamically loaded routine's mod times
  45 %cmd_cache = ();                                # cache of short names
  46 $errstr = ();                                   # error string from eval
  47 %aliases = ();                                  # aliases for (parts of) commands
  48 $scriptbase = "$main::root/scripts"; # the place where all users start scripts go
  49 $maxerrors = 20;                                # the maximum number of concurrent errors allowed before disconnection
  50 $maxbadcount = 3;                               # no of bad words allowed before disconnection
  51 $msgpolltime = 3600;                    # the time between polls for new messages
  52 $cmdimportdir = "$main::root/cmd_import"; # the base directory for importing command scripts
  53                                           # this does not exist as default, you need to create it manually
  54                                           #
  55
  56 use vars qw($VERSION $BRANCH);
  57 $VERSION = sprintf( "%d.%03d", q$Revision$ =~ /(\d+)\.(\d+)/ );
  58 $BRANCH = sprintf( "%d.%03d", q$Revision$ =~ /\d+\.\d+\.(\d+)\.(\d+)/  || (0,0));
  59 $main::build += $VERSION;
  60 $main::branch += $BRANCH;
  61
  62 #
  63 # obtain a new connection this is derived from dxchannel
  64 #
  65
  66 sub new
  67 {
  68         my $self = DXChannel::alloc(@_);
  69
  70         # routing, this must go out here to prevent race condx
  71         my $pkg = shift;
  72         my $call = shift;
  73         my @rout = $main::routeroot->add_user($call, Route::here(1));
  74
  75         # ALWAYS output the user
  76         my $ref = Route::User::get($call);
  77         $main::me->route_pc16($main::mycall, undef, $main::routeroot, $ref) if $ref;
  78
  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};
  95         $host ||= "AGW Port #$self->{conn}->{agwport}" if exists $self->{conn}->{agwport};
  96         $host ||= "unknown";
  97         LogDbg('DXCommand', "$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         my $nossid = $call;
 154         $nossid =~ s/-\d+$//;
 155
 156         $self->{spotsfilter} = Filter::read_in('spots', $call, 0)
 157                 || Filter::read_in('spots', $nossid, 0)
 158                         || Filter::read_in('spots', 'user_default', 0);
 159         $self->{wwvfilter} = Filter::read_in('wwv', $call, 0)
 160                 || Filter::read_in('wwv', $nossid, 0)
 161                         || Filter::read_in('wwv', 'user_default', 0);
 162         $self->{wcyfilter} = Filter::read_in('wcy', $call, 0)
 163                 || Filter::read_in('wcy', $nossid, 0)
 164                         || Filter::read_in('wcy', 'user_default', 0);
 165         $self->{annfilter} = Filter::read_in('ann', $call, 0)
 166                 || Filter::read_in('ann', $nossid, 0)
 167                         || Filter::read_in('ann', 'user_default', 0) ;
 168
 169         # clean up qra locators
 170         my $qra = $user->qra;
 171         $qra = undef if ($qra && !DXBearing::is_qra($qra));
 172         unless ($qra) {
 173                 my $lat = $user->lat;
 174                 my $long = $user->long;
 175                 $user->qra(DXBearing::lltoqra($lat, $long)) if (defined $lat && defined $long);
 176         }
 177
 178         # decide on echo
 179         my $echo = $user->wantecho;
 180         unless ($echo) {
 181                 $self->send_now('E', "0");
 182                 $self->send($self->msg('echow'));
 183                 $self->conn->echo($echo) if $self->conn->can('echo');
 184         }
 185
 186         $self->tell_login('loginu');
 187         $self->tell_buddies('loginb');
 188
 189         # do we need to send a forward/opernam?
 190         my $lastoper = $user->lastoper || 0;
 191         my $homenode = $user->homenode || "";
 192         if ($homenode eq $main::mycall && $main::systime >= $lastoper + $DXUser::lastoperinterval) {
 193                 run_cmd($main::me, "forward/opernam $call");
 194                 $user->lastoper($main::systime + ((int rand(10)) * 86400));
 195         }
 196
 197         # run a script send the output to the punter
 198         my $script = new Script(lc $call) || new Script('user_default');
 199         $script->run($self) if $script;
 200
 201         # send cluster info
 202         my $info = Route::cluster();
 203         $self->send("Cluster:$info");
 204
 205         # send prompts for qth, name and things
 206         $self->send($self->msg('namee1')) if !$user->name;
 207         $self->send($self->msg('qthe1')) if !$user->qth;
 208         $self->send($self->msg('qll')) if !$user->qra || (!$user->lat && !$user->long);
 209         $self->send($self->msg('hnodee1')) if !$user->qth;
 210         $self->send($self->msg('m9')) if DXMsg::for_me($call);
 211
 212         # send out any buddy messages for other people that are online
 213         foreach my $call (@{$user->buddies}) {
 214                 my $ref = Route::User::get($call);
 215                 if ($ref) {
 216                         foreach my $node (@{$ref->parent}) {
 217                                 my $s = $node eq $main::mycall ? $call : "$node: $call";
 218                                 $self->send($self->msg('loginb', $s));
 219                         }
 220                 }
 221         }
 222
 223         $self->lastmsgpoll($main::systime);
 224         $self->prompt;
 225 }
 226
 227 #
 228 # This is the normal command prompt driver
 229 #
 230
 231 sub normal
 232 {
 233         my $self = shift;
 234         my $cmdline = shift;
 235         my @ans;
 236
 237         # save this for them's that need it
 238         my $rawline = $cmdline;
 239
 240         # remove leading and trailing spaces
 241         $cmdline =~ s/^\s*(.*)\s*$/$1/;
 242
 243         if ($self->{state} eq 'page') {
 244                 my $i = $self->{pagelth};
 245                 my $ref = $self->{pagedata};
 246                 my $tot = @$ref;
 247
 248                 # abort if we get a line starting in with a
 249                 if ($cmdline =~ /^a/io) {
 250                         undef $ref;
 251                         $i = 0;
 252                 }
 253
 254                 # send a tranche of data
 255                 while ($i-- > 0 && @$ref) {
 256                         my $line = shift @$ref;
 257                         $line =~ s/\s+$//o;     # why am having to do this?
 258                         $self->send($line);
 259                 }
 260
 261                 # reset state if none or else chuck out an intermediate prompt
 262                 if ($ref && @$ref) {
 263                         $tot -= $self->{pagelth};
 264                         $self->send($self->msg('page', $tot));
 265                 } else {
 266                         $self->state('prompt');
 267                 }
 268         } elsif ($self->{state} eq 'sysop') {
 269                 my $passwd = $self->{user}->passwd;
 270                 if ($passwd) {
 271                         my @pw = grep {$_ !~ /\s/} split //, $passwd;
 272                         my @l = @{$self->{passwd}};
 273                         my $str = "$pw[$l[0]].*$pw[$l[1]].*$pw[$l[2]].*$pw[$l[3]].*$pw[$l[4]]";
 274                         if ($cmdline =~ /$str/) {
 275                                 $self->{priv} = $self->{user}->priv;
 276                         } else {
 277                                 $self->send($self->msg('sorry'));
 278                         }
 279                 } else {
 280                         $self->send($self->msg('sorry'));
 281                 }
 282                 $self->state('prompt');
 283         } elsif ($self->{state} eq 'passwd') {
 284                 my $passwd = $self->{user}->passwd;
 285                 if ($passwd && $cmdline eq $passwd) {
 286                         $self->send($self->msg('pw1'));
 287                         $self->state('passwd1');
 288                 } else {
 289                         $self->conn->{echo} = $self->conn->{decho};
 290                         delete $self->conn->{decho};
 291                         $self->send($self->msg('sorry'));
 292                         $self->state('prompt');
 293                 }
 294         } elsif ($self->{state} eq 'passwd1') {
 295                 $self->{passwd} = $cmdline;
 296                 $self->send($self->msg('pw2'));
 297                 $self->state('passwd2');
 298         } elsif ($self->{state} eq 'passwd2') {
 299                 if ($cmdline eq $self->{passwd}) {
 300                         $self->{user}->passwd($cmdline);
 301                         $self->send($self->msg('pw3'));
 302                 } else {
 303                         $self->send($self->msg('pw4'));
 304                 }
 305                 $self->conn->{echo} = $self->conn->{decho};
 306                 delete $self->conn->{decho};
 307                 $self->state('prompt');
 308         } elsif ($self->{state} eq 'talk') {
 309                 if ($cmdline =~ m{^(?:/EX|/ABORT)}i) {
 310                         for (@{$self->{talklist}}) {
 311                                 $self->send_talks($_,  $self->msg('talkend'));
 312                         }
 313                         $self->state('prompt');
 314                         delete $self->{talklist};
 315                 } elsif ($cmdline =~ m|^/+\w+|) {
 316                         $cmdline =~ s|^/||;
 317                         my $sendit = $cmdline =~ s|^/+||;
 318                         my @in = $self->run_cmd($cmdline);
 319                         $self->send_ans(@in);
 320                         if ($sendit && $self->{talklist} && @{$self->{talklist}}) {
 321                                 foreach my $l (@in) {
 322                                         my @bad;
 323                                         if (@bad = BadWords::check($l)) {
 324                                                 $self->badcount(($self->badcount||0) + @bad);
 325                                                 LogDbg('DXCommand', "$self->{call} swore: $l with words:" . join(',', @bad) . ")");
 326                                         } else {
 327                                                 for (@{$self->{talklist}}) {
 328                                                         $self->send_talks($_, $l);
 329                                                 }
 330                                         }
 331                                 }
 332                         }
 333                         $self->send($self->talk_prompt);
 334                 } elsif ($self->{talklist} && @{$self->{talklist}}) {
 335                         # send what has been said to whoever is in this person's talk list
 336                         my @bad;
 337                         if (@bad = BadWords::check($cmdline)) {
 338                                 $self->badcount(($self->badcount||0) + @bad);
 339                                 LogDbg('DXCommand', "$self->{call} swore: $cmdline with words:" . join(',', @bad) . ")");
 340                         } else {
 341                                 for (@{$self->{talklist}}) {
 342                                         $self->send_talks($_, $rawline);
 343                                 }
 344                         }
 345                         $self->send($self->talk_prompt) if $self->{state} eq 'talk';
 346                 } else {
 347                         # for safety
 348                         $self->state('prompt');
 349                 }
 350         } elsif (my $func = $self->{func}) {
 351                 no strict 'refs';
 352                 my @ans;
 353                 if (ref $self->{edit}) {
 354                         eval { @ans = $self->{edit}->$func($self, $rawline)};
 355                 } else {
 356                         eval {  @ans = &{$self->{func}}($self, $rawline) };
 357                 }
 358                 if ($@) {
 359                         $self->send_ans("Syserr: on stored func $self->{func}", $@);
 360                         delete $self->{func};
 361                         $self->state('prompt');
 362                         undef $@;
 363                 }
 364                 $self->send_ans(@ans);
 365         } else {
 366                 $self->send_ans(run_cmd($self, $cmdline));
 367         }
 368
 369         # check for excessive swearing
 370         if ($self->{badcount} && $self->{badcount} >= $maxbadcount) {
 371                 LogDbg('DXCommand', "$self->{call} logged out for excessive swearing");
 372                 $self->disconnect;
 373                 return;
 374         }
 375
 376         # send a prompt only if we are in a prompt state
 377         $self->prompt() if $self->{state} =~ /^prompt/o;
 378 }
 379
 380 # send out the talk messages taking into account vias and connectivity
 381 sub send_talks
 382 {
 383         my ($self, $ent, $line) = @_;
 384
 385         my ($to, $via) = $ent =~ /(\S+)>(\S+)/;
 386         $to = $ent unless $to;
 387         my $call = $via ? $via : $to;
 388         my $clref = Route::get($call);
 389         my $dxchan = $clref->dxchan if $clref;
 390         if ($dxchan) {
 391                 $dxchan->talk($self->{call}, $to, $via, $line);
 392         } else {
 393                 $self->send($self->msg('disc2', $via ? $via : $to));
 394                 my @l = grep { $_ ne $ent } @{$self->{talklist}};
 395                 if (@l) {
 396                         $self->{talklist} = \@l;
 397                 } else {
 398                         delete $self->{talklist};
 399                         $self->state('prompt');
 400                 }
 401         }
 402 }
 403
 404 sub talk_prompt
 405 {
 406         my $self = shift;
 407         my @call;
 408         for (@{$self->{talklist}}) {
 409                 my ($to, $via) = /(\S+)>(\S+)/;
 410                 $to = $_ unless $to;
 411                 push @call, $to;
 412         }
 413         return $self->msg('talkprompt', join(',', @call));
 414 }
 415
 416 #
 417 # send a load of stuff to a command user with page prompting
 418 # and stuff
 419 #
 420
 421 sub send_ans
 422 {
 423         my $self = shift;
 424
 425         if ($self->{pagelth} && @_ > $self->{pagelth}) {
 426                 my $i;
 427                 for ($i = $self->{pagelth}; $i-- > 0; ) {
 428                         my $line = shift @_;
 429                         $line =~ s/\s+$//o;     # why am having to do this?
 430                         $self->send($line);
 431                 }
 432                 $self->{pagedata} =  [ @_ ];
 433                 $self->state('page');
 434                 $self->send($self->msg('page', scalar @_));
 435         } else {
 436                 for (@_) {
 437                         if (defined $_) {
 438                                 $self->send($_);
 439                         } else {
 440                                 $self->send('');
 441                         }
 442                 }
 443         }
 444 }
 445 #
 446 # this is the thing that runs the command, it is done like this for the
 447 # benefit of remote command execution
 448 #
 449
 450 sub run_cmd
 451 {
 452         my $self = shift;
 453         my $user = $self->{user};
 454         my $call = $self->{call};
 455         my $cmdline = shift;
 456         my @ans;
 457
 458
 459         return () if length $cmdline == 0;
 460
 461
 462         # split the command line up into parts, the first part is the command
 463         my ($cmd, $args) = split /\s+/, $cmdline, 2;
 464         $args = "" unless defined $args;
 465
 466         if ($cmd) {
 467                 # strip out // on command only
 468                 $cmd =~ s|//|/|g;
 469                 $cmd =~ s|^/||g;                # no leading / either
 470                 $cmd =~ s|[^-?\w/]||g;          # and no funny characters either
 471
 472                 my ($path, $fcmd);
 473
 474                 dbg("cmd: $cmd") if isdbg('command');
 475
 476                 # alias it if possible
 477                 my $acmd = CmdAlias::get_cmd($cmd);
 478                 if ($acmd) {
 479                         ($cmd, $args) = split /\s+/, "$acmd $args", 2;
 480                         $args = "" unless defined $args;
 481                         dbg("aliased cmd: $cmd $args") if isdbg('command');
 482                 }
 483
 484                 # first expand out the entry to a command
 485                 ($path, $fcmd) = search($main::localcmd, $cmd, "pl");
 486                 ($path, $fcmd) = search($main::cmd, $cmd, "pl") unless $path && $fcmd;
 487
 488                 if ($path && $cmd) {
 489                         dbg("path: $cmd cmd: $fcmd") if isdbg('command');
 490
 491                         my $package = find_cmd_name($path, $fcmd);
 492                         return ($@) if $@;
 493
 494                         if ($package) {
 495                                 no strict 'refs';
 496                                 dbg("package: $package") if isdbg('command');
 497                                 eval { @ans = &$package($self, $args) };
 498                                 return (DXDebug::shortmess($@)) if $@;
 499                         }
 500                 } else {
 501                         dbg("cmd: $cmd not found") if isdbg('command');
 502                         if (++$self->{errors} > $maxerrors) {
 503                                 $self->send($self->msg('e26'));
 504                                 $self->disconnect;
 505                                 return ();
 506                         } else {
 507                                 return ($self->msg('e1'));
 508                         }
 509                 }
 510         }
 511
 512         my $ok = shift @ans;
 513         if ($ok) {
 514                 delete $self->{errors};
 515         } else {
 516                 if (++$self->{errors} > $maxerrors) {
 517                         $self->send($self->msg('e26'));
 518                         $self->disconnect;
 519                         return ();
 520                 }
 521         }
 522         return map {s/([^\s])\s+$/$1/; $_} @ans;
 523 }
 524
 525 #
 526 # This is called from inside the main cluster processing loop and is used
 527 # for despatching commands that are doing some long processing job
 528 #
 529 sub process
 530 {
 531         my $t = time;
 532         my @dxchan = DXChannel::get_all();
 533         my $dxchan;
 534
 535         foreach $dxchan (@dxchan) {
 536                 next if $dxchan->sort ne 'U';
 537
 538                 # send a outstanding message prompt if required
 539                 if ($t >= $dxchan->lastmsgpoll + $msgpolltime) {
 540                         $dxchan->send($dxchan->msg('m9')) if DXMsg::for_me($dxchan->call);
 541                         $dxchan->lastmsgpoll($t);
 542                 }
 543
 544                 # send a prompt if no activity out on this channel
 545                 if ($t >= $dxchan->t + $main::user_interval) {
 546                         $dxchan->prompt() if $dxchan->{state} =~ /^prompt/o;
 547                         $dxchan->t($t);
 548                 }
 549         }
 550
 551         while (my ($k, $v) = each %nothereslug) {
 552                 if ($main::systime >= $v + 300) {
 553                         delete $nothereslug{$k};
 554                 }
 555         }
 556
 557         import_cmd();
 558 }
 559
 560 #
 561 # finish up a user context
 562 #
 563 sub disconnect
 564 {
 565         my $self = shift;
 566         my $call = $self->call;
 567
 568         return if $self->{disconnecting}++;
 569
 570         delete $self->{senddbg};
 571
 572         my $uref = Route::User::get($call);
 573         my @rout;
 574         if ($uref) {
 575                 @rout = $main::routeroot->del_user($uref);
 576                 dbg("B/C PC17 on $main::mycall for: $call") if isdbg('route');
 577
 578                 # issue a pc17 to everybody interested
 579                 $main::me->route_pc17($main::mycall, undef, $main::routeroot, $uref);
 580         } else {
 581                 confess "trying to disconnect a non existant user $call";
 582         }
 583
 584         # I was the last node visited
 585     $self->user->node($main::mycall);
 586
 587         # send info to all logged in thingies
 588         $self->tell_login('logoutu');
 589         $self->tell_buddies('logoutb');
 590
 591         LogDbg('DXCommand', "$call disconnected");
 592
 593         $self->SUPER::disconnect;
 594 }
 595
 596 #
 597 # short cut to output a prompt
 598 #
 599
 600 sub prompt
 601 {
 602         my $self = shift;
 603         my $call = $self->call;
 604         my $date = cldate($main::systime);
 605         my $time = ztime($main::systime);
 606         my $prompt = $self->{prompt} || $self->msg('pr');
 607
 608         $call = "($call)" unless $self->here;
 609         $prompt =~ s/\%C/$call/g;
 610         $prompt =~ s/\%D/$date/g;
 611         $prompt =~ s/\%T/$time/g;
 612         $prompt =~ s/\%M/$main::mycall/g;
 613
 614         $self->send($prompt);
 615 }
 616
 617 # broadcast a message to all users [except those mentioned after buffer]
 618 sub broadcast
 619 {
 620         my $pkg = shift;                        # ignored
 621         my $s = shift;                          # the line to be rebroadcast
 622
 623     foreach my $dxchan (DXChannel::get_all()) {
 624                 next unless $dxchan->{sort} eq 'U'; # only interested in user channels
 625                 next if grep $dxchan == $_, @_;
 626                 $dxchan->send($s);                      # send it
 627         }
 628 }
 629
 630 # gimme all the users
 631 sub get_all
 632 {
 633         return grep {$_->{sort} eq 'U'} DXChannel::get_all();
 634 }
 635
 636 # run a script for this user
 637 sub run_script
 638 {
 639         my $self = shift;
 640         my $silent = shift || 0;
 641
 642 }
 643
 644 #
 645 # search for the command in the cache of short->long form commands
 646 #
 647
 648 sub search
 649 {
 650         my ($path, $short_cmd, $suffix) = @_;
 651         my ($apath, $acmd);
 652
 653         # commands are lower case
 654         $short_cmd = lc $short_cmd;
 655         dbg("command: $path $short_cmd\n") if isdbg('command');
 656
 657         # do some checking for funny characters
 658         return () if $short_cmd =~ /\/$/;
 659
 660         # return immediately if we have it
 661         ($apath, $acmd) = split ',', $cmd_cache{$short_cmd} if $cmd_cache{$short_cmd};
 662         if ($apath && $acmd) {
 663                 dbg("cached $short_cmd = ($apath, $acmd)\n") if isdbg('command');
 664                 return ($apath, $acmd);
 665         }
 666
 667         # if not guess
 668         my @parts = split '/', $short_cmd;
 669         my $dirfn;
 670         my $curdir = $path;
 671
 672         while (my $p = shift @parts) {
 673                 opendir(D, $curdir) or confess "can't open $curdir $!";
 674                 my @ls = readdir D;
 675                 closedir D;
 676
 677                 # if this isn't the last part
 678                 if (@parts) {
 679                         my $found;
 680                         foreach my $l (sort @ls) {
 681                                 next if $l =~ /^\./;
 682                                 if ((-d "$curdir/$l") && $p eq substr($l, 0, length $p)) {
 683                                         dbg("got dir: $curdir/$l\n") if isdbg('command');
 684                                         $dirfn .= "$l/";
 685                                         $curdir .= "/$l";
 686                                         $found++;
 687                                         last;
 688                                 }
 689                         }
 690                         # only proceed if we find the directory asked for
 691                         return () unless $found;
 692                 } else {
 693                         foreach my $l (sort @ls) {
 694                                 next if $l =~ /^\./;
 695                                 next unless $l =~ /\.$suffix$/;
 696                                 if ($p eq substr($l, 0, length $p)) {
 697                                         $l =~ s/\.$suffix$//;
 698                                         $dirfn = "" unless $dirfn;
 699                                         $cmd_cache{$short_cmd} = join(',', ($path, "$dirfn$l")); # cache it
 700                                         dbg("got path: $path cmd: $dirfn$l\n") if isdbg('command');
 701                                         return ($path, "$dirfn$l");
 702                                 }
 703                         }
 704                 }
 705         }
 706
 707         return ();
 708 }
 709
 710 # clear the command name cache
 711 sub clear_cmd_cache
 712 {
 713         no strict 'refs';
 714
 715         for (keys %Cache) {
 716                 undef *{$_} unless /cmd_cache/;
 717                 dbg("Undefining cmd $_") if isdbg('command');
 718         }
 719         %cmd_cache = ();
 720         %Cache = ();
 721 }
 722
 723 #
 724 # the persistant execution of things from the command directories
 725 #
 726 #
 727 # This allows perl programs to call functions dynamically
 728 #
 729 # This has been nicked directly from the perlembed pages
 730 #
 731
 732 #require Devel::Symdump;
 733
 734 sub valid_package_name {
 735         my($string) = @_;
 736         $string =~ s|([^A-Za-z0-9_/])|sprintf("_%2x",unpack("C",$1))|eg;
 737
 738         $string =~ s|/|_|g;
 739         return "cmd_$string";
 740 }
 741
 742 #
 743 # this bit of magic finds a command in the offered directory
 744 sub find_cmd_name {
 745         my $path = shift;
 746         my $cmdname = shift;
 747         my $package = valid_package_name($cmdname);
 748         my $filename = "$path/$cmdname.pl";
 749         my $mtime = -M $filename;
 750
 751         # return if we can't find it
 752         $errstr = undef;
 753         unless (defined $mtime) {
 754                 $errstr = DXM::msg('e1');
 755                 return undef;
 756         }
 757
 758         if(defined $Cache{$package}->{mtime} &&$Cache{$package}->{mtime} <= $mtime) {
 759                 #we have compiled this subroutine already,
 760                 #it has not been updated on disk, nothing left to do
 761                 #print STDERR "already compiled $package->handler\n";
 762                 ;
 763         } else {
 764
 765                 my $sub = readfilestr($filename);
 766                 unless ($sub) {
 767                         $errstr = "Syserr: can't open '$filename' $!";
 768                         return undef;
 769                 };
 770
 771                 #wrap the code into a subroutine inside our unique package
 772                 my $eval = qq( sub $package { $sub } );
 773
 774                 if (isdbg('eval')) {
 775                         my @list = split /\n/, $eval;
 776                         my $line;
 777                         for (@list) {
 778                                 dbg($_ . "\n") if isdbg('eval');
 779                         }
 780                 }
 781
 782                 # get rid of any existing sub and try to compile the new one
 783                 no strict 'refs';
 784
 785                 if (exists $Cache{$package}) {
 786                         dbg("Redefining $package") if isdbg('command');
 787                         undef *$package;
 788                 } else {
 789                         dbg("Defining $package") if isdbg('command');
 790                 }
 791                 eval $eval;
 792
 793                 $Cache{$package} = {mtime => $mtime };
 794
 795         }
 796
 797         return $package;
 798 }
 799
 800 sub local_send
 801 {
 802         my ($self, $let, $buf) = @_;
 803         if ($self->{state} eq 'prompt' || $self->{state} eq 'talk') {
 804                 if ($self->{enhanced}) {
 805                         $self->send_later($let, $buf);
 806                 } else {
 807                         $self->send($buf);
 808                 }
 809         } else {
 810                 $self->delay($buf);
 811         }
 812 }
 813
 814 # send a talk message here
 815 sub talk
 816 {
 817         my ($self, $from, $to, $via, $line) = @_;
 818         $line =~ s/\\5E/\^/g;
 819         $self->local_send('T', "$to de $from: $line") if $self->{talk};
 820         Log('talk', $to, $from, $via?$via:$main::mycall, $line);
 821         # send a 'not here' message if required
 822         unless ($self->{here} && $from ne $to) {
 823                 my $key = "$to$from";
 824                 unless (exists $nothereslug{$key}) {
 825                         my ($ref, $dxchan);
 826                         if (($ref = Route::get($from)) && ($dxchan = $ref->dxchan)) {
 827                                 my $name = $self->user->name || $to;
 828                                 my $s = $self->user->nothere || $dxchan->msg('nothere', $name);
 829                                 $nothereslug{$key} = $main::systime;
 830                                 $dxchan->talk($to, $from, undef, $s);
 831                         }
 832                 }
 833         }
 834 }
 835
 836 # send an announce
 837 sub announce
 838 {
 839         my $self = shift;
 840         my $line = shift;
 841         my $isolate = shift;
 842         my $to = shift;
 843         my $target = shift;
 844         my $text = shift;
 845         my ($filter, $hops);
 846
 847         if (!$self->{ann_talk} && $to ne $self->{call}) {
 848                 my $call = AnnTalk::is_talk_candidate($_[0], $text);
 849                 return if $call;
 850         }
 851
 852         if ($self->{annfilter}) {
 853                 ($filter, $hops) = $self->{annfilter}->it(@_ );
 854                 return unless $filter;
 855         }
 856
 857         unless ($self->{ann}) {
 858                 return if $_[0] ne $main::myalias && $_[0] ne $main::mycall;
 859         }
 860         return if $target eq 'SYSOP' && $self->{priv} < 5;
 861         my $buf = "$to$target de $_[0]: $text";
 862         $buf =~ s/\%5E/^/g;
 863         $buf .= "\a\a" if $self->{beep};
 864         $self->local_send($target eq 'WX' ? 'W' : 'N', $buf);
 865 }
 866
 867 # send a chat
 868 sub chat
 869 {
 870         my $self = shift;
 871         my $line = shift;
 872         my $isolate = shift;
 873         my $target = shift;
 874         my $to = shift;
 875         my $text = shift;
 876         my ($filter, $hops);
 877
 878         return unless grep uc $_ eq $target, @{$self->{user}->{group}};
 879
 880         $text =~ s/^\#\d+ //;
 881         my $buf = "$target de $_[0]: $text";
 882         $buf =~ s/\%5E/^/g;
 883         $buf .= "\a\a" if $self->{beep};
 884         $self->local_send('C', $buf);
 885 }
 886
 887 sub format_dx_spot
 888 {
 889         my $self = shift;
 890
 891         my $t = ztime($_[2]);
 892         my $loc = '';
 893         my $clth = $self->{consort} eq 'local' ? 29 : 30;
 894         my $comment = substr $_[3], 0, $clth;
 895         $comment .= ' ' x ($clth - length($comment));
 896         if ($self->{user}->wantgrid) {
 897                 my $ref = DXUser->get_current($_[4]);
 898                 if ($ref) {
 899                         $loc = $ref->qra || '';
 900                         $loc = ' ' . substr($loc, 0, 4) if $loc;
 901                 }
 902         }
 903
 904         if ($self->{user}->wantdxitu) {
 905                 $loc = ' ' . sprintf("%2d", $_[10]) if defined $_[10];
 906                 $comment = substr($comment, 0,  $self->{consort} eq 'local' ? 26 : 27) . ' ' . sprintf("%2d", $_[8]) if defined $_[8];
 907         } elsif ($self->{user}->wantdxcq) {
 908                 $loc = ' ' . sprintf("%2d", $_[11]) if defined $_[11];
 909                 $comment = substr($comment, 0,  $self->{consort} eq 'local' ? 26 : 27) . ' ' . sprintf("%2d", $_[9]) if defined $_[9];
 910         } elsif ($self->{user}->wantusstate) {
 911                 $loc = ' ' . $_[13] if $_[13];
 912                 $comment = substr($comment, 0,  $self->{consort} eq 'local' ? 26 : 27) . ' ' . $_[12] if $_[12];
 913         }
 914
 915         return sprintf "DX de %-7.7s%11.1f  %-12.12s %-s $t$loc", "$_[4]:", $_[0], $_[1], $comment;
 916 }
 917
 918 # send a dx spot
 919 sub dx_spot
 920 {
 921         my $self = shift;
 922         my $line = shift;
 923         my $isolate = shift;
 924         return unless $self->{dx};
 925
 926         my ($filter, $hops);
 927
 928         if ($self->{spotsfilter}) {
 929                 ($filter, $hops) = $self->{spotsfilter}->it(@_ );
 930                 return unless $filter;
 931         }
 932
 933         dbg('spot: "' . join('","', @_) . '"') if isdbg('dxspot');
 934
 935         my $buf;
 936         if ($self->{ve7cc}) {
 937                 $buf = VE7CC::dx_spot($self, @_);
 938         } else {
 939                 $buf = $self->format_dx_spot(@_);
 940                 $buf .= "\a\a" if $self->{beep};
 941                 $buf =~ s/\%5E/^/g;
 942         }
 943
 944         $self->local_send('X', $buf);
 945 }
 946
 947 sub wwv
 948 {
 949         my $self = shift;
 950         my $line = shift;
 951         my $isolate = shift;
 952         my ($filter, $hops);
 953
 954         return unless $self->{wwv};
 955
 956         if ($self->{wwvfilter}) {
 957                 ($filter, $hops) = $self->{wwvfilter}->it(@_[7..$#_] );
 958                 return unless $filter;
 959         }
 960
 961         my $buf = "WWV de $_[6] <$_[1]>:   SFI=$_[2], A=$_[3], K=$_[4], $_[5]";
 962         $buf .= "\a\a" if $self->{beep};
 963         $self->local_send('V', $buf);
 964 }
 965
 966 sub wcy
 967 {
 968         my $self = shift;
 969         my $line = shift;
 970         my $isolate = shift;
 971         my ($filter, $hops);
 972
 973         return unless $self->{wcy};
 974
 975         if ($self->{wcyfilter}) {
 976                 ($filter, $hops) = $self->{wcyfilter}->it(@_ );
 977                 return unless $filter;
 978         }
 979
 980         my $buf = "WCY de $_[10] <$_[1]> : K=$_[4] expK=$_[5] A=$_[3] R=$_[6] SFI=$_[2] SA=$_[7] GMF=$_[8] Au=$_[9]";
 981         $buf .= "\a\a" if $self->{beep};
 982         $self->local_send('Y', $buf);
 983 }
 984
 985 # broadcast debug stuff to all interested parties
 986 sub broadcast_debug
 987 {
 988         my $s = shift;                          # the line to be rebroadcast
 989
 990         foreach my $dxchan (DXChannel::get_all) {
 991                 next unless $dxchan->{enhanced} && $dxchan->{senddbg};
 992                 $dxchan->send_later('L', $s);
 993         }
 994 }
 995
 996 sub do_entry_stuff
 997 {
 998         my $self = shift;
 999         my $line = shift;
1000         my @out;
1001
1002         if ($self->state eq 'enterbody') {
1003                 my $loc = $self->{loc} || confess "local var gone missing" ;
1004                 if ($line eq "\032" || $line eq '%1A' || uc $line eq "/EX") {
1005                         no strict 'refs';
1006                         push @out, &{$loc->{endaction}}($self);          # like this for < 5.8.0
1007                         $self->func(undef);
1008                         $self->state('prompt');
1009                 } elsif ($line eq "\031" || uc $line eq "/ABORT" || uc $line eq "/QUIT") {
1010                         push @out, $self->msg('m10');
1011                         delete $loc->{lines};
1012                         delete $self->{loc};
1013                         $self->func(undef);
1014                         $self->state('prompt');
1015                 } else {
1016                         push @{$loc->{lines}}, length($line) > 0 ? $line : " ";
1017                         # i.e. it ain't and end or abort, therefore store the line
1018                 }
1019         } else {
1020                 confess "Invalid state $self->{state}";
1021         }
1022         return @out;
1023 }
1024
1025 sub store_startup_script
1026 {
1027         my $self = shift;
1028         my $loc = $self->{loc} || confess "local var gone missing" ;
1029         my @out;
1030         my $call = $loc->{call} || confess "callsign gone missing";
1031         confess "lines array gone missing" unless ref $loc->{lines};
1032         my $r = Script::store($call, $loc->{lines});
1033         if (defined $r) {
1034                 if ($r) {
1035                         push @out, $self->msg('m19', $call, $r);
1036                 } else {
1037                         push @out, $self->msg('m20', $call);
1038                 }
1039         } else {
1040                 push @out, "error opening startup script $call $!";
1041         }
1042         return @out;
1043 }
1044
1045 # Import any commands contained in any files in import_cmd directory
1046 #
1047 # If the filename has a recogisable callsign as some delimited part
1048 # of it, then this is the user the command will be run as.
1049 #
1050 sub import_cmd
1051 {
1052         # are there any to do in this directory?
1053         return unless -d $cmdimportdir;
1054         unless (opendir(DIR, $cmdimportdir)) {
1055                 LogDbg('err', "can\'t open $cmdimportdir $!");
1056                 return;
1057         }
1058
1059         my @names = readdir(DIR);
1060         closedir(DIR);
1061         my $name;
1062         foreach $name (@names) {
1063                 next if $name =~ /^\./;
1064
1065                 my $s = Script->new($name, $cmdimportdir);
1066                 if ($s) {
1067                         LogDbg('DXCommand', "Run import cmd file $name");
1068                         my @cat = split /[^A-Za-z0-9]+/, $name;
1069                         my ($call) = grep {is_callsign(uc $_)} @cat;
1070                         $call ||= $main::mycall;
1071                         $call = uc $call;
1072                         my @out;
1073
1074
1075                         $s->inscript(0);        # switch off script checks
1076
1077                         if ($call eq $main::mycall) {
1078                                 @out = $s->run($main::me, 1);
1079                         } else {
1080                                 my $dxchan = DXChannel::get($call);
1081                             if ($dxchan) {
1082                                         @out = $s->run($dxchan, 1);
1083                                 } else {
1084                                         my $u = DXUser->get($call);
1085                                         if ($u) {
1086                                                 $dxchan = $main::me;
1087                                                 my $old = $dxchan->{call};
1088                                                 my $priv = $dxchan->{priv};
1089                                                 my $user = $dxchan->{user};
1090                                                 $dxchan->{call} = $call;
1091                                                 $dxchan->{priv} = $u->priv;
1092                                                 $dxchan->{user} = $u;
1093                                                 @out = $s->run($dxchan, 1);
1094                                                 $dxchan->{call} = $call;
1095                                                 $dxchan->{priv} = $priv;
1096                                                 $dxchan->{user} = $user;
1097                                         } else {
1098                                                 LogDbg('err', "Trying to run import cmd for non-existant user $call");
1099                                         }
1100                                 }
1101                         }
1102                         $s->erase;
1103                         for (@out) {
1104                                 LogDbg('DXCommand', "Import cmd $name/$call: $_");
1105                         }
1106                 } else {
1107                         LogDbg('err', "Failed to open $cmdimportdir/$name $!");
1108                         unlink "$cmdimportdir/$name";
1109                 }
1110         }
1111 }
1112 1;
1113 __END__