perl/DXCommandmode.pm

   1 #!/usr/bin/perl
   2 #
   3 # This module impliments the user facing command mode for a dx cluster
   4 #
   5 # Copyright (c) 1998 Dirk Koopman G1TLH
   6 #
   7 # $Id$
   8 #
   9
  10 package DXCommandmode;
  11
  12 use POSIX;
  13
  14 @ISA = qw(DXChannel);
  15
  16 use DXUtil;
  17 use DXChannel;
  18 use DXUser;
  19 use DXVars;
  20 use DXDebug;
  21 use DXM;
  22 use DXLog;
  23 use DXLogPrint;
  24 use DXBearing;
  25 use CmdAlias;
  26 use Filter;
  27 use Minimuf;
  28 use DXDb;
  29 use AnnTalk;
  30 use WCY;
  31 use Sun;
  32 use Internet;
  33 use Script;
  34 use Net::Telnet;
  35 use QSL;
  36 use DB_File;
  37 use VE7CC;
  38
  39 use strict;
  40 use vars qw(%Cache %cmd_cache $errstr %aliases $scriptbase $maxerrors %nothereslug
  41         $maxbadcount $msgpolltime $default_pagelth $cmdimportdir);
  42
  43 %Cache = ();                                    # cache of dynamically loaded routine's mod times
  44 %cmd_cache = ();                                # cache of short names
  45 $errstr = ();                                   # error string from eval
  46 %aliases = ();                                  # aliases for (parts of) commands
  47 $scriptbase = "$main::root/scripts"; # the place where all users start scripts go
  48 $maxerrors = 20;                                # the maximum number of concurrent errors allowed before disconnection
  49 $maxbadcount = 3;                               # no of bad words allowed before disconnection
  50 $msgpolltime = 3600;                    # the time between polls for new messages
  51 $cmdimportdir = "$main::root/cmd_import"; # the base directory for importing command scripts
  52                                           # this does not exist as default, you need to create it manually
  53                                           #
  54
  55 use vars qw($VERSION $BRANCH);
  56 $VERSION = sprintf( "%d.%03d", q$Revision$ =~ /(\d+)\.(\d+)/ );
  57 $BRANCH = sprintf( "%d.%03d", q$Revision$ =~ /\d+\.\d+\.(\d+)\.(\d+)/  || (0,0));
  58 $main::build += $VERSION;
  59 $main::branch += $BRANCH;
  60
  61 #
  62 # obtain a new connection this is derived from dxchannel
  63 #
  64
  65 sub new
  66 {
  67         my $self = DXChannel::alloc(@_);
  68
  69         # routing, this must go out here to prevent race condx
  70         my $pkg = shift;
  71         my $call = shift;
  72         my @rout = $main::routeroot->add_user($call, Route::here(1));
  73
  74         # ALWAYS output the user
  75         my $ref = Route::User::get($call);
  76         $main::me->route_pc16($main::mycall, undef, $main::routeroot, $ref) if $ref;
  77
  78         return $self;
  79 }
  80
  81 # this is how a a connection starts, you get a hello message and the motd with
  82 # possibly some other messages asking you to set various things up if you are
  83 # new (or nearly new and slacking) user.
  84
  85 sub start
  86 {
  87         my ($self, $line, $sort) = @_;
  88         my $user = $self->{user};
  89         my $call = $self->{call};
  90         my $name = $user->{name};
  91
  92         # log it
  93         my $host = $self->{conn}->{peerhost};
  94         $host ||= "AGW Port #$self->{conn}->{agwport}" if exists $self->{conn}->{agwport};
  95         $host ||= "unknown";
  96         Log('DXCommand', "$call connected from $host");
  97
  98         $self->{name} = $name ? $name : $call;
  99         $self->send($self->msg('l2',$self->{name}));
 100         $self->state('prompt');         # a bit of room for further expansion, passwords etc
 101         $self->{priv} = $user->priv || 0;
 102         $self->{lang} = $user->lang || $main::lang || 'en';
 103         my $pagelth = $user->pagelth;
 104         $pagelth = $default_pagelth unless defined $pagelth;
 105         $self->{pagelth} = $pagelth;
 106         ($self->{width}) = $line =~ /width=(\d+)/; $line =~ s/\s*width=\d+\s*//;
 107         $self->{width} = 80 unless $self->{width} && $self->{width} > 80;
 108         $self->{consort} = $line;       # save the connection type
 109
 110         # set some necessary flags on the user if they are connecting
 111         $self->{beep} = $user->wantbeep;
 112         $self->{ann} = $user->wantann;
 113         $self->{wwv} = $user->wantwwv;
 114         $self->{wcy} = $user->wantwcy;
 115         $self->{talk} = $user->wanttalk;
 116         $self->{wx} = $user->wantwx;
 117         $self->{dx} = $user->wantdx;
 118         $self->{logininfo} = $user->wantlogininfo;
 119         $self->{ann_talk} = $user->wantann_talk;
 120         $self->{here} = 1;
 121         $self->{prompt} = $user->prompt if $user->prompt;
 122
 123         # sort out new dx spot stuff
 124         $user->wantdxcq(0) unless defined $user->{wantdxcq};
 125         $user->wantdxitu(0) unless defined $user->{wantdxitu};
 126         $user->wantusstate(0) unless defined $user->{wantusstate};
 127
 128         # sort out registration
 129         if ($main::reqreg == 1) {
 130                 $self->{registered} = $user->registered;
 131         } elsif ($main::reqreg == 2) {
 132                 $self->{registered} = !$user->registered;
 133         } else {
 134                 $self->{registered} = 1;
 135         }
 136
 137
 138         # decide which motd to send
 139         my $motd;
 140         unless ($self->{registered}) {
 141                 $motd = "${main::motd}_nor_$self->{lang}";
 142                 $motd = "${main::motd}_nor" unless -e $motd;
 143         }
 144         $motd = "${main::motd}_$self->{lang}" unless $motd && -e $motd;
 145         $motd = $main::motd unless $motd && -e $motd;
 146         $self->send_file($motd) if -e $motd;
 147
 148         # sort out privilege reduction
 149         $self->{priv} = 0 if $line =~ /^(ax|te)/ && !$self->conn->{usedpasswd};
 150
 151         # get the filters
 152         $self->{spotsfilter} = Filter::read_in('spots', $call, 0) || Filter::read_in('spots', 'user_default', 0);
 153         $self->{wwvfilter} = Filter::read_in('wwv', $call, 0) || Filter::read_in('wwv', 'user_default', 0);
 154         $self->{wcyfilter} = Filter::read_in('wcy', $call, 0) || Filter::read_in('wcy', 'user_default', 0);
 155         $self->{annfilter} = Filter::read_in('ann', $call, 0) || Filter::read_in('ann', 'user_default', 0) ;
 156
 157         # clean up qra locators
 158         my $qra = $user->qra;
 159         $qra = undef if ($qra && !DXBearing::is_qra($qra));
 160         unless ($qra) {
 161                 my $lat = $user->lat;
 162                 my $long = $user->long;
 163                 $user->qra(DXBearing::lltoqra($lat, $long)) if (defined $lat && defined $long);
 164         }
 165
 166         # decide on echo
 167         my $echo = $user->wantecho;
 168         unless ($echo) {
 169                 $self->send_now('E', "0");
 170                 $self->send($self->msg('echow'));
 171                 $self->conn->echo($echo) if $self->conn->can('echo');
 172         }
 173
 174         $self->tell_login('loginu');
 175
 176         # do we need to send a forward/opernam?
 177         my $lastoper = $user->lastoper || 0;
 178         my $homenode = $user->homenode || "";
 179         if ($homenode eq $main::mycall && $main::systime >= $lastoper + $DXUser::lastoperinterval) {
 180                 run_cmd($main::me, "forward/opernam $call");
 181                 $user->lastoper($main::systime + ((int rand(10)) * 86400));
 182         }
 183
 184         # run a script send the output to the punter
 185         my $script = new Script(lc $call) || new Script('user_default');
 186         $script->run($self) if $script;
 187
 188         # send cluster info
 189         my $info = Route::cluster();
 190         $self->send("Cluster:$info");
 191
 192         # send prompts and things
 193         $self->send($self->msg('namee1')) if !$user->name;
 194         $self->send($self->msg('qthe1')) if !$user->qth;
 195         $self->send($self->msg('qll')) if !$user->qra || (!$user->lat && !$user->long);
 196         $self->send($self->msg('hnodee1')) if !$user->qth;
 197         $self->send($self->msg('m9')) if DXMsg::for_me($call);
 198         $self->lastmsgpoll($main::systime);
 199         $self->prompt;
 200 }
 201
 202 #
 203 # This is the normal command prompt driver
 204 #
 205
 206 sub normal
 207 {
 208         my $self = shift;
 209         my $cmdline = shift;
 210         my @ans;
 211
 212         # save this for them's that need it
 213         my $rawline = $cmdline;
 214
 215         # remove leading and trailing spaces
 216         $cmdline =~ s/^\s*(.*)\s*$/$1/;
 217
 218         if ($self->{state} eq 'page') {
 219                 my $i = $self->{pagelth};
 220                 my $ref = $self->{pagedata};
 221                 my $tot = @$ref;
 222
 223                 # abort if we get a line starting in with a
 224                 if ($cmdline =~ /^a/io) {
 225                         undef $ref;
 226                         $i = 0;
 227                 }
 228
 229                 # send a tranche of data
 230                 while ($i-- > 0 && @$ref) {
 231                         my $line = shift @$ref;
 232                         $line =~ s/\s+$//o;     # why am having to do this?
 233                         $self->send($line);
 234                 }
 235
 236                 # reset state if none or else chuck out an intermediate prompt
 237                 if ($ref && @$ref) {
 238                         $tot -= $self->{pagelth};
 239                         $self->send($self->msg('page', $tot));
 240                 } else {
 241                         $self->state('prompt');
 242                 }
 243         } elsif ($self->{state} eq 'sysop') {
 244                 my $passwd = $self->{user}->passwd;
 245                 if ($passwd) {
 246                         my @pw = grep {$_ !~ /\s/} split //, $passwd;
 247                         my @l = @{$self->{passwd}};
 248                         my $str = "$pw[$l[0]].*$pw[$l[1]].*$pw[$l[2]].*$pw[$l[3]].*$pw[$l[4]]";
 249                         if ($cmdline =~ /$str/) {
 250                                 $self->{priv} = $self->{user}->priv;
 251                         } else {
 252                                 $self->send($self->msg('sorry'));
 253                         }
 254                 } else {
 255                         $self->send($self->msg('sorry'));
 256                 }
 257                 $self->state('prompt');
 258         } elsif ($self->{state} eq 'passwd') {
 259                 my $passwd = $self->{user}->passwd;
 260                 if ($passwd && $cmdline eq $passwd) {
 261                         $self->send($self->msg('pw1'));
 262                         $self->state('passwd1');
 263                 } else {
 264                         $self->conn->{echo} = $self->conn->{decho};
 265                         delete $self->conn->{decho};
 266                         $self->send($self->msg('sorry'));
 267                         $self->state('prompt');
 268                 }
 269         } elsif ($self->{state} eq 'passwd1') {
 270                 $self->{passwd} = $cmdline;
 271                 $self->send($self->msg('pw2'));
 272                 $self->state('passwd2');
 273         } elsif ($self->{state} eq 'passwd2') {
 274                 if ($cmdline eq $self->{passwd}) {
 275                         $self->{user}->passwd($cmdline);
 276                         $self->send($self->msg('pw3'));
 277                 } else {
 278                         $self->send($self->msg('pw4'));
 279                 }
 280                 $self->conn->{echo} = $self->conn->{decho};
 281                 delete $self->conn->{decho};
 282                 $self->state('prompt');
 283         } elsif ($self->{state} eq 'talk') {
 284                 if ($cmdline =~ m{^(?:/EX|/ABORT)}i) {
 285                         for (@{$self->{talklist}}) {
 286                                 $self->send_talks($_,  $self->msg('talkend'));
 287                         }
 288                         $self->state('prompt');
 289                         delete $self->{talklist};
 290                 } elsif ($cmdline =~ m|^/+\w+|) {
 291                         $cmdline =~ s|^/||;
 292                         my $sendit = $cmdline =~ s|^/+||;
 293                         my @in = $self->run_cmd($cmdline);
 294                         $self->send_ans(@in);
 295                         if ($sendit && $self->{talklist} && @{$self->{talklist}}) {
 296                                 foreach my $l (@in) {
 297                                         my @bad;
 298                                         if (@bad = BadWords::check($l)) {
 299                                                 $self->badcount(($self->badcount||0) + @bad);
 300                                                 Log('DXCommand', "$self->{call} swore: $l");
 301                                         } else {
 302                                                 for (@{$self->{talklist}}) {
 303                                                         $self->send_talks($_, $l);
 304                                                 }
 305                                         }
 306                                 }
 307                         }
 308                         $self->send($self->talk_prompt);
 309                 } elsif ($self->{talklist} && @{$self->{talklist}}) {
 310                         # send what has been said to whoever is in this person's talk list
 311                         my @bad;
 312                         if (@bad = BadWords::check($cmdline)) {
 313                                 $self->badcount(($self->badcount||0) + @bad);
 314                                 Log('DXCommand', "$self->{call} swore: $cmdline");
 315                         } else {
 316                                 for (@{$self->{talklist}}) {
 317                                         $self->send_talks($_, $rawline);
 318                                 }
 319                         }
 320                         $self->send($self->talk_prompt) if $self->{state} eq 'talk';
 321                 } else {
 322                         # for safety
 323                         $self->state('prompt');
 324                 }
 325         } elsif (my $func = $self->{func}) {
 326                 no strict 'refs';
 327                 my @ans;
 328                 if (ref $self->{edit}) {
 329                         eval { @ans = $self->{edit}->$func($self, $rawline)};
 330                 } else {
 331                         eval {  @ans = &{$self->{func}}($self, $rawline) };
 332                 }
 333                 if ($@) {
 334                         $self->send_ans("Syserr: on stored func $self->{func}", $@);
 335                         delete $self->{func};
 336                         $self->state('prompt');
 337                         undef $@;
 338                 }
 339                 $self->send_ans(@ans);
 340         } else {
 341                 $self->send_ans(run_cmd($self, $cmdline));
 342         }
 343
 344         # check for excessive swearing
 345         if ($self->{badcount} && $self->{badcount} >= $maxbadcount) {
 346                 Log('DXCommand', "$self->{call} logged out for excessive swearing");
 347                 $self->disconnect;
 348                 return;
 349         }
 350
 351         # send a prompt only if we are in a prompt state
 352         $self->prompt() if $self->{state} =~ /^prompt/o;
 353 }
 354
 355 # send out the talk messages taking into account vias and connectivity
 356 sub send_talks
 357 {
 358         my ($self, $ent, $line) = @_;
 359
 360         my ($to, $via) = $ent =~ /(\S+)>(\S+)/;
 361         $to = $ent unless $to;
 362         my $call = $via ? $via : $to;
 363         my $clref = Route::get($call);
 364         my $dxchan = $clref->dxchan if $clref;
 365         if ($dxchan) {
 366                 $dxchan->talk($self->{call}, $to, $via, $line);
 367         } else {
 368                 $self->send($self->msg('disc2', $via ? $via : $to));
 369                 my @l = grep { $_ ne $ent } @{$self->{talklist}};
 370                 if (@l) {
 371                         $self->{talklist} = \@l;
 372                 } else {
 373                         delete $self->{talklist};
 374                         $self->state('prompt');
 375                 }
 376         }
 377 }
 378
 379 sub talk_prompt
 380 {
 381         my $self = shift;
 382         my @call;
 383         for (@{$self->{talklist}}) {
 384                 my ($to, $via) = /(\S+)>(\S+)/;
 385                 $to = $_ unless $to;
 386                 push @call, $to;
 387         }
 388         return $self->msg('talkprompt', join(',', @call));
 389 }
 390
 391 #
 392 # send a load of stuff to a command user with page prompting
 393 # and stuff
 394 #
 395
 396 sub send_ans
 397 {
 398         my $self = shift;
 399
 400         if ($self->{pagelth} && @_ > $self->{pagelth}) {
 401                 my $i;
 402                 for ($i = $self->{pagelth}; $i-- > 0; ) {
 403                         my $line = shift @_;
 404                         $line =~ s/\s+$//o;     # why am having to do this?
 405                         $self->send($line);
 406                 }
 407                 $self->{pagedata} =  [ @_ ];
 408                 $self->state('page');
 409                 $self->send($self->msg('page', scalar @_));
 410         } else {
 411                 for (@_) {
 412                         if (defined $_) {
 413                                 $self->send($_);
 414                         } else {
 415                                 $self->send('');
 416                         }
 417                 }
 418         }
 419 }
 420 #
 421 # this is the thing that runs the command, it is done like this for the
 422 # benefit of remote command execution
 423 #
 424
 425 sub run_cmd
 426 {
 427         my $self = shift;
 428         my $user = $self->{user};
 429         my $call = $self->{call};
 430         my $cmdline = shift;
 431         my @ans;
 432
 433
 434         return () if length $cmdline == 0;
 435
 436         # split the command line up into parts, the first part is the command
 437         my ($cmd, $args) = split /\s+/, $cmdline, 2;
 438         $args = "" unless defined $args;
 439
 440         if ($cmd) {
 441                 # strip out // on command only
 442                 $cmd =~ s|//|/|g;
 443                 $cmd =~ s|^/||g;                # no leading / either
 444                 $cmd =~ s|[^-?\w/]||g;          # and no funny characters either
 445
 446                 my ($path, $fcmd);
 447
 448                 dbg("cmd: $cmd") if isdbg('command');
 449
 450                 # alias it if possible
 451                 my $acmd = CmdAlias::get_cmd($cmd);
 452                 if ($acmd) {
 453                         ($cmd, $args) = split /\s+/, "$acmd $args", 2;
 454                         $args = "" unless defined $args;
 455                         dbg("aliased cmd: $cmd $args") if isdbg('command');
 456                 }
 457
 458                 # first expand out the entry to a command
 459                 ($path, $fcmd) = search($main::localcmd, $cmd, "pl");
 460                 ($path, $fcmd) = search($main::cmd, $cmd, "pl") unless $path && $fcmd;
 461
 462                 if ($path && $cmd) {
 463                         dbg("path: $cmd cmd: $fcmd") if isdbg('command');
 464
 465                         my $package = find_cmd_name($path, $fcmd);
 466                         return ($@) if $@;
 467
 468                         if ($package) {
 469                                 no strict 'refs';
 470                                 dbg("package: $package") if isdbg('command');
 471                                 eval { @ans = &$package($self, $args) };
 472                                 return (DXDebug::shortmess($@)) if $@;
 473                         }
 474                 } else {
 475                         dbg("cmd: $cmd not found") if isdbg('command');
 476                         if (++$self->{errors} > $maxerrors) {
 477                                 $self->send($self->msg('e26'));
 478                                 $self->disconnect;
 479                                 return ();
 480                         } else {
 481                                 return ($self->msg('e1'));
 482                         }
 483                 }
 484         }
 485
 486         my $ok = shift @ans;
 487         if ($ok) {
 488                 delete $self->{errors};
 489         } else {
 490                 if (++$self->{errors} > $maxerrors) {
 491                         $self->send($self->msg('e26'));
 492                         $self->disconnect;
 493                         return ();
 494                 }
 495         }
 496         return map {s/([^\s])\s+$/$1/; $_} @ans;
 497 }
 498
 499 #
 500 # This is called from inside the main cluster processing loop and is used
 501 # for despatching commands that are doing some long processing job
 502 #
 503 sub process
 504 {
 505         my $t = time;
 506         my @dxchan = DXChannel::get_all();
 507         my $dxchan;
 508
 509         foreach $dxchan (@dxchan) {
 510                 next if $dxchan->sort ne 'U';
 511
 512                 # send a outstanding message prompt if required
 513                 if ($t >= $dxchan->lastmsgpoll + $msgpolltime) {
 514                         $dxchan->send($dxchan->msg('m9')) if DXMsg::for_me($dxchan->call);
 515                         $dxchan->lastmsgpoll($t);
 516                 }
 517
 518                 # send a prompt if no activity out on this channel
 519                 if ($t >= $dxchan->t + $main::user_interval) {
 520                         $dxchan->prompt() if $dxchan->{state} =~ /^prompt/o;
 521                         $dxchan->t($t);
 522                 }
 523         }
 524
 525         while (my ($k, $v) = each %nothereslug) {
 526                 if ($main::systime >= $v + 300) {
 527                         delete $nothereslug{$k};
 528                 }
 529         }
 530
 531         import_cmd();
 532 }
 533
 534 #
 535 # finish up a user context
 536 #
 537 sub disconnect
 538 {
 539         my $self = shift;
 540         my $call = $self->call;
 541
 542         return if $self->{disconnecting}++;
 543
 544         delete $self->{senddbg};
 545
 546         my $uref = Route::User::get($call);
 547         my @rout;
 548         if ($uref) {
 549                 @rout = $main::routeroot->del_user($uref);
 550                 dbg("B/C PC17 on $main::mycall for: $call") if isdbg('route');
 551
 552                 # issue a pc17 to everybody interested
 553                 $main::me->route_pc17($main::mycall, undef, $main::routeroot, $uref);
 554         } else {
 555                 confess "trying to disconnect a non existant user $call";
 556         }
 557
 558         # I was the last node visited
 559     $self->user->node($main::mycall);
 560
 561         # send info to all logged in thingies
 562         $self->tell_login('logoutu');
 563
 564         Log('DXCommand', "$call disconnected");
 565
 566         $self->SUPER::disconnect;
 567 }
 568
 569 #
 570 # short cut to output a prompt
 571 #
 572
 573 sub prompt
 574 {
 575         my $self = shift;
 576         my $call = $self->call;
 577         my $date = cldate($main::systime);
 578         my $time = ztime($main::systime);
 579         my $prompt = $self->{prompt} || $self->msg('pr');
 580
 581         $call = "($call)" unless $self->here;
 582         $prompt =~ s/\%C/$call/g;
 583         $prompt =~ s/\%D/$date/g;
 584         $prompt =~ s/\%T/$time/g;
 585         $prompt =~ s/\%M/$main::mycall/g;
 586
 587         $self->send($prompt);
 588 }
 589
 590 # broadcast a message to all users [except those mentioned after buffer]
 591 sub broadcast
 592 {
 593         my $pkg = shift;                        # ignored
 594         my $s = shift;                          # the line to be rebroadcast
 595
 596     foreach my $dxchan (DXChannel::get_all()) {
 597                 next unless $dxchan->{sort} eq 'U'; # only interested in user channels
 598                 next if grep $dxchan == $_, @_;
 599                 $dxchan->send($s);                      # send it
 600         }
 601 }
 602
 603 # gimme all the users
 604 sub get_all
 605 {
 606         return grep {$_->{sort} eq 'U'} DXChannel::get_all();
 607 }
 608
 609 # run a script for this user
 610 sub run_script
 611 {
 612         my $self = shift;
 613         my $silent = shift || 0;
 614
 615 }
 616
 617 #
 618 # search for the command in the cache of short->long form commands
 619 #
 620
 621 sub search
 622 {
 623         my ($path, $short_cmd, $suffix) = @_;
 624         my ($apath, $acmd);
 625
 626         # commands are lower case
 627         $short_cmd = lc $short_cmd;
 628         dbg("command: $path $short_cmd\n") if isdbg('command');
 629
 630         # do some checking for funny characters
 631         return () if $short_cmd =~ /\/$/;
 632
 633         # return immediately if we have it
 634         ($apath, $acmd) = split ',', $cmd_cache{$short_cmd} if $cmd_cache{$short_cmd};
 635         if ($apath && $acmd) {
 636                 dbg("cached $short_cmd = ($apath, $acmd)\n") if isdbg('command');
 637                 return ($apath, $acmd);
 638         }
 639
 640         # if not guess
 641         my @parts = split '/', $short_cmd;
 642         my $dirfn;
 643         my $curdir = $path;
 644
 645         while (my $p = shift @parts) {
 646                 opendir(D, $curdir) or confess "can't open $curdir $!";
 647                 my @ls = readdir D;
 648                 closedir D;
 649
 650                 # if this isn't the last part
 651                 if (@parts) {
 652                         my $found;
 653                         foreach my $l (sort @ls) {
 654                                 next if $l =~ /^\./;
 655                                 if ((-d "$curdir/$l") && $p eq substr($l, 0, length $p)) {
 656                                         dbg("got dir: $curdir/$l\n") if isdbg('command');
 657                                         $dirfn .= "$l/";
 658                                         $curdir .= "/$l";
 659                                         $found++;
 660                                         last;
 661                                 }
 662                         }
 663                         # only proceed if we find the directory asked for
 664                         return () unless $found;
 665                 } else {
 666                         foreach my $l (sort @ls) {
 667                                 next if $l =~ /^\./;
 668                                 next unless $l =~ /\.$suffix$/;
 669                                 if ($p eq substr($l, 0, length $p)) {
 670                                         $l =~ s/\.$suffix$//;
 671                                         $dirfn = "" unless $dirfn;
 672                                         $cmd_cache{$short_cmd} = join(',', ($path, "$dirfn$l")); # cache it
 673                                         dbg("got path: $path cmd: $dirfn$l\n") if isdbg('command');
 674                                         return ($path, "$dirfn$l");
 675                                 }
 676                         }
 677                 }
 678         }
 679
 680         return ();
 681 }
 682
 683 # clear the command name cache
 684 sub clear_cmd_cache
 685 {
 686         no strict 'refs';
 687
 688         for (keys %Cache) {
 689                 undef *{$_} unless /cmd_cache/;
 690                 dbg("Undefining cmd $_") if isdbg('command');
 691         }
 692         %cmd_cache = ();
 693         %Cache = ();
 694 }
 695
 696 #
 697 # the persistant execution of things from the command directories
 698 #
 699 #
 700 # This allows perl programs to call functions dynamically
 701 #
 702 # This has been nicked directly from the perlembed pages
 703 #
 704
 705 #require Devel::Symdump;
 706
 707 sub valid_package_name {
 708         my($string) = @_;
 709         $string =~ s|([^A-Za-z0-9_/])|sprintf("_%2x",unpack("C",$1))|eg;
 710
 711         $string =~ s|/|_|g;
 712         return "cmd_$string";
 713 }
 714
 715 #
 716 # this bit of magic finds a command in the offered directory
 717 sub find_cmd_name {
 718         my $path = shift;
 719         my $cmdname = shift;
 720         my $package = valid_package_name($cmdname);
 721         my $filename = "$path/$cmdname.pl";
 722         my $mtime = -M $filename;
 723
 724         # return if we can't find it
 725         $errstr = undef;
 726         unless (defined $mtime) {
 727                 $errstr = DXM::msg('e1');
 728                 return undef;
 729         }
 730
 731         if(defined $Cache{$package}->{mtime} &&$Cache{$package}->{mtime} <= $mtime) {
 732                 #we have compiled this subroutine already,
 733                 #it has not been updated on disk, nothing left to do
 734                 #print STDERR "already compiled $package->handler\n";
 735                 ;
 736         } else {
 737
 738                 my $sub = readfilestr($filename);
 739                 unless ($sub) {
 740                         $errstr = "Syserr: can't open '$filename' $!";
 741                         return undef;
 742                 };
 743
 744                 #wrap the code into a subroutine inside our unique package
 745                 my $eval = qq( sub $package { $sub } );
 746
 747                 if (isdbg('eval')) {
 748                         my @list = split /\n/, $eval;
 749                         my $line;
 750                         for (@list) {
 751                                 dbg($_ . "\n") if isdbg('eval');
 752                         }
 753                 }
 754
 755                 # get rid of any existing sub and try to compile the new one
 756                 no strict 'refs';
 757
 758                 if (exists $Cache{$package}) {
 759                         dbg("Redefining $package") if isdbg('command');
 760                         undef *$package;
 761                 } else {
 762                         dbg("Defining $package") if isdbg('command');
 763                 }
 764                 eval $eval;
 765
 766                 $Cache{$package} = {mtime => $mtime };
 767
 768         }
 769
 770         return $package;
 771 }
 772
 773 sub local_send
 774 {
 775         my ($self, $let, $buf) = @_;
 776         if ($self->{state} eq 'prompt' || $self->{state} eq 'talk') {
 777                 if ($self->{enhanced}) {
 778                         $self->send_later($let, $buf);
 779                 } else {
 780                         $self->send($buf);
 781                 }
 782         } else {
 783                 $self->delay($buf);
 784         }
 785 }
 786
 787 # send a talk message here
 788 sub talk
 789 {
 790         my ($self, $from, $to, $via, $line) = @_;
 791         $line =~ s/\\5E/\^/g;
 792         $self->local_send('T', "$to de $from: $line") if $self->{talk};
 793         Log('talk', $to, $from, $via?$via:$main::mycall, $line);
 794         # send a 'not here' message if required
 795         unless ($self->{here} && $from ne $to) {
 796                 my $key = "$to$from";
 797                 unless (exists $nothereslug{$key}) {
 798                         my ($ref, $dxchan);
 799                         if (($ref = Route::get($from)) && ($dxchan = $ref->dxchan)) {
 800                                 my $name = $self->user->name || $to;
 801                                 my $s = $self->user->nothere || $dxchan->msg('nothere', $name);
 802                                 $nothereslug{$key} = $main::systime;
 803                                 $dxchan->talk($to, $from, undef, $s);
 804                         }
 805                 }
 806         }
 807 }
 808
 809 # send an announce
 810 sub announce
 811 {
 812         my $self = shift;
 813         my $line = shift;
 814         my $isolate = shift;
 815         my $to = shift;
 816         my $target = shift;
 817         my $text = shift;
 818         my ($filter, $hops);
 819
 820         if (!$self->{ann_talk} && $to ne $self->{call}) {
 821                 my $call = AnnTalk::is_talk_candidate($_[0], $text);
 822                 return if $call;
 823         }
 824
 825         if ($self->{annfilter}) {
 826                 ($filter, $hops) = $self->{annfilter}->it(@_ );
 827                 return unless $filter;
 828         }
 829
 830         unless ($self->{ann}) {
 831                 return if $_[0] ne $main::myalias && $_[0] ne $main::mycall;
 832         }
 833         return if $target eq 'SYSOP' && $self->{priv} < 5;
 834         my $buf = "$to$target de $_[0]: $text";
 835         $buf =~ s/\%5E/^/g;
 836         $buf .= "\a\a" if $self->{beep};
 837         $self->local_send($target eq 'WX' ? 'W' : 'N', $buf);
 838 }
 839
 840 # send a chat
 841 sub chat
 842 {
 843         my $self = shift;
 844         my $line = shift;
 845         my $isolate = shift;
 846         my $target = shift;
 847         my $to = shift;
 848         my $text = shift;
 849         my ($filter, $hops);
 850
 851         return unless grep uc $_ eq $target, @{$self->{user}->{group}};
 852
 853         $text =~ s/^\#\d+ //;
 854         my $buf = "$target de $_[0]: $text";
 855         $buf =~ s/\%5E/^/g;
 856         $buf .= "\a\a" if $self->{beep};
 857         $self->local_send('C', $buf);
 858 }
 859
 860 sub format_dx_spot
 861 {
 862         my $self = shift;
 863
 864         my $t = ztime($_[2]);
 865         my $loc = '';
 866         my $clth = $self->{consort} eq 'local' ? 29 : 30;
 867         my $comment = substr $_[3], 0, $clth;
 868         $comment .= ' ' x ($clth - length($comment));
 869         if ($self->{user}->wantgrid) {
 870                 my $ref = DXUser->get_current($_[4]);
 871                 if ($ref) {
 872                         $loc = $ref->qra || '';
 873                         $loc = ' ' . substr($loc, 0, 4) if $loc;
 874                 }
 875         }
 876
 877         if ($self->{user}->wantdxitu) {
 878                 $loc = ' ' . sprintf("%2d", $_[10]) if defined $_[10];
 879                 $comment = substr($comment, 0,  $self->{consort} eq 'local' ? 26 : 27) . ' ' . sprintf("%2d", $_[8]) if defined $_[8];
 880         } elsif ($self->{user}->wantdxcq) {
 881                 $loc = ' ' . sprintf("%2d", $_[11]) if defined $_[11];
 882                 $comment = substr($comment, 0,  $self->{consort} eq 'local' ? 26 : 27) . ' ' . sprintf("%2d", $_[9]) if defined $_[9];
 883         } elsif ($self->{user}->wantusstate) {
 884                 $loc = ' ' . $_[13] if $_[13];
 885                 $comment = substr($comment, 0,  $self->{consort} eq 'local' ? 26 : 27) . ' ' . $_[12] if $_[12];
 886         }
 887
 888         return sprintf "DX de %-7.7s%11.1f  %-12.12s %-s $t$loc", "$_[4]:", $_[0], $_[1], $comment;
 889 }
 890
 891 # send a dx spot
 892 sub dx_spot
 893 {
 894         my $self = shift;
 895         my $line = shift;
 896         my $isolate = shift;
 897         return unless $self->{dx};
 898
 899         my ($filter, $hops);
 900
 901         if ($self->{spotsfilter}) {
 902                 ($filter, $hops) = $self->{spotsfilter}->it(@_ );
 903                 return unless $filter;
 904         }
 905
 906         dbg('spot: "' . join('","', @_) . '"') if isdbg('dxspot');
 907
 908         my $buf;
 909         if ($self->{ve7cc}) {
 910                 $buf = VE7CC::dx_spot($self, @_);
 911         } else {
 912                 $buf = $self->format_dx_spot(@_);
 913                 $buf .= "\a\a" if $self->{beep};
 914                 $buf =~ s/\%5E/^/g;
 915         }
 916
 917         $self->local_send('X', $buf);
 918 }
 919
 920 sub wwv
 921 {
 922         my $self = shift;
 923         my $line = shift;
 924         my $isolate = shift;
 925         my ($filter, $hops);
 926
 927         return unless $self->{wwv};
 928
 929         if ($self->{wwvfilter}) {
 930                 ($filter, $hops) = $self->{wwvfilter}->it(@_[7..$#_] );
 931                 return unless $filter;
 932         }
 933
 934         my $buf = "WWV de $_[6] <$_[1]>:   SFI=$_[2], A=$_[3], K=$_[4], $_[5]";
 935         $buf .= "\a\a" if $self->{beep};
 936         $self->local_send('V', $buf);
 937 }
 938
 939 sub wcy
 940 {
 941         my $self = shift;
 942         my $line = shift;
 943         my $isolate = shift;
 944         my ($filter, $hops);
 945
 946         return unless $self->{wcy};
 947
 948         if ($self->{wcyfilter}) {
 949                 ($filter, $hops) = $self->{wcyfilter}->it(@_ );
 950                 return unless $filter;
 951         }
 952
 953         my $buf = "WCY de $_[10] <$_[1]> : K=$_[4] expK=$_[5] A=$_[3] R=$_[6] SFI=$_[2] SA=$_[7] GMF=$_[8] Au=$_[9]";
 954         $buf .= "\a\a" if $self->{beep};
 955         $self->local_send('Y', $buf);
 956 }
 957
 958 # broadcast debug stuff to all interested parties
 959 sub broadcast_debug
 960 {
 961         my $s = shift;                          # the line to be rebroadcast
 962
 963         foreach my $dxchan (DXChannel::get_all) {
 964                 next unless $dxchan->{enhanced} && $dxchan->{senddbg};
 965                 $dxchan->send_later('L', $s);
 966         }
 967 }
 968
 969 sub do_entry_stuff
 970 {
 971         my $self = shift;
 972         my $line = shift;
 973         my @out;
 974
 975         if ($self->state eq 'enterbody') {
 976                 my $loc = $self->{loc} || confess "local var gone missing" ;
 977                 if ($line eq "\032" || $line eq '%1A' || uc $line eq "/EX") {
 978                         no strict 'refs';
 979                         push @out, &{$loc->{endaction}}($self);          # like this for < 5.8.0
 980                         $self->func(undef);
 981                         $self->state('prompt');
 982                 } elsif ($line eq "\031" || uc $line eq "/ABORT" || uc $line eq "/QUIT") {
 983                         push @out, $self->msg('m10');
 984                         delete $loc->{lines};
 985                         delete $self->{loc};
 986                         $self->func(undef);
 987                         $self->state('prompt');
 988                 } else {
 989                         push @{$loc->{lines}}, length($line) > 0 ? $line : " ";
 990                         # i.e. it ain't and end or abort, therefore store the line
 991                 }
 992         } else {
 993                 confess "Invalid state $self->{state}";
 994         }
 995         return @out;
 996 }
 997
 998 sub store_startup_script
 999 {
1000         my $self = shift;
1001         my $loc = $self->{loc} || confess "local var gone missing" ;
1002         my @out;
1003         my $call = $loc->{call} || confess "callsign gone missing";
1004         confess "lines array gone missing" unless ref $loc->{lines};
1005         my $r = Script::store($call, $loc->{lines});
1006         if (defined $r) {
1007                 if ($r) {
1008                         push @out, $self->msg('m19', $call, $r);
1009                 } else {
1010                         push @out, $self->msg('m20', $call);
1011                 }
1012         } else {
1013                 push @out, "error opening startup script $call $!";
1014         }
1015         return @out;
1016 }
1017
1018 # Import any commands contained in any files in import_cmd directory
1019 #
1020 # If the filename has a recogisable callsign as some delimited part
1021 # of it, then this is the user the command will be run as.
1022 #
1023 sub import_cmd
1024 {
1025         # are there any to do in this directory?
1026         return unless -d $cmdimportdir;
1027         unless (opendir(DIR, $cmdimportdir)) {
1028                 dbg("can\'t open $cmdimportdir $!");
1029                 Log('err', "can\'t open $cmdimportdir $!");
1030                 return;
1031         }
1032
1033         my @names = readdir(DIR);
1034         closedir(DIR);
1035         my $name;
1036         foreach $name (@names) {
1037                 next if $name =~ /^\./;
1038
1039                 my $s = Script->new($name, $cmdimportdir);
1040                 if ($s) {
1041
1042                         dbg("Run import cmd file $name");
1043                         Log('DXCommand', "Run import cmd file $name");
1044                         my @cat = split /[^A-Za-z0-9]+/, $name;
1045                         my ($call) = grep {is_callsign(uc $_)} @cat;
1046                         $call ||= $main::mycall;
1047                         $call = uc $call;
1048                         my @out;
1049
1050
1051                         $s->inscript(0);        # switch off script checks
1052
1053                         if ($call eq $main::mycall) {
1054                                 @out = $s->run($main::me, 1);
1055                         } else {
1056                                 my $dxchan = DXChannel::get($call);
1057                             if ($dxchan) {
1058                                         @out = $s->run($dxchan, 1);
1059                                 } else {
1060                                         my $u = DXUser->get($call);
1061                                         if ($u) {
1062                                                 $dxchan = $main::me;
1063                                                 my $old = $dxchan->{call};
1064                                                 my $priv = $dxchan->{priv};
1065                                                 my $user = $dxchan->{user};
1066                                                 $dxchan->{call} = $call;
1067                                                 $dxchan->{priv} = $u->priv;
1068                                                 $dxchan->{user} = $u;
1069                                                 @out = $s->run($dxchan, 1);
1070                                                 $dxchan->{call} = $call;
1071                                                 $dxchan->{priv} = $priv;
1072                                                 $dxchan->{user} = $user;
1073                                         } else {
1074                                                 Log('err', "Trying to run import cmd for non-existant user $call");
1075                                                 dbg( "Trying to run import cmd for non-existant user $call");
1076                                         }
1077                                 }
1078                         }
1079                         $s->erase;
1080                         for (@out) {
1081                                 Log('DXCommand', "Import cmd $name/$call: $_");
1082                                 dbg("Import cmd $name/$call: $_");
1083                         }
1084                 } else {
1085                         Log("Failed to open $cmdimportdir/$name $!");
1086                         dbg("Failed to open $cmdimportdir/$name $!");
1087                         unlink "$cmdimportdir/$name";
1088                 }
1089         }
1090 }
1091 1;
1092 __END__