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