perl/DXMsg.pm

   1 #!/usr/bin/perl
   2 #
   3 # This module impliments the message handling for a dx cluster
   4 #
   5 # Copyright (c) 1998 Dirk Koopman G1TLH
   6 #
   7 # $Id$
   8 #
   9 #
  10 # Notes for implementors:-
  11 #
  12 # PC28 field 11 is the RR required flag
  13 # PC28 field 12 is a VIA routing (ie it is a node call)
  14 #
  15
  16 package DXMsg;
  17
  18 use DXUtil;
  19 use DXChannel;
  20 use DXUser;
  21 use DXM;
  22 use DXProtVars;
  23 use DXProtout;
  24 use DXDebug;
  25 use DXLog;
  26 use IO::File;
  27 use Fcntl;
  28
  29 use strict;
  30
  31 use vars qw($VERSION $BRANCH);
  32 $VERSION = sprintf( "%d.%03d", q$Revision$ =~ /(\d+)\.(\d+)/ );
  33 $BRANCH = sprintf( "%d.%03d", q$Revision$ =~ /\d+\.\d+\.(\d+)\.(\d+)/ ) || 0;
  34 $main::build += $VERSION;
  35 $main::branch += $BRANCH;
  36
  37 use vars qw(%work @msg $msgdir %valid %busy $maxage $last_clean
  38                         @badmsg @swop $swopfn $badmsgfn $forwardfn @forward $timeout $waittime
  39                     $queueinterval $lastq $importfn $minchunk $maxchunk $bulltopriv);
  40
  41 %work = ();                                             # outstanding jobs
  42 @msg = ();                                              # messages we have
  43 %busy = ();                                             # station interlocks
  44 $msgdir = "$main::root/msg";    # directory contain the msgs
  45 $maxage = 30 * 86400;                   # the maximum age that a message shall live for if not marked
  46 $last_clean = 0;                                # last time we did a clean
  47 @forward = ();                  # msg forward table
  48 @badmsg = ();                                   # bad message table
  49 @swop = ();                                             # swop table
  50 $timeout = 30*60;               # forwarding timeout
  51 $waittime = 30*60;              # time an aborted outgoing message waits before trying again
  52 $queueinterval = 1*60;          # run the queue every 1 minute
  53 $lastq = 0;
  54
  55 $minchunk = 4800;               # minimum chunk size for a split message
  56 $maxchunk = 6000;               # maximum chunk size
  57 $bulltopriv = 1;                                # convert msgs with callsigns to private if they are bulls
  58
  59
  60 $badmsgfn = "$msgdir/badmsg.pl";    # list of TO address we wont store
  61 $forwardfn = "$msgdir/forward.pl";  # the forwarding table
  62 $swopfn = "$msgdir/swop.pl";        # the swopping table
  63 $importfn = "$msgdir/import";       # import directory
  64
  65
  66 %valid = (
  67                   fromnode => '5,From Node',
  68                   tonode => '5,To Node',
  69                   to => '0,To',
  70                   from => '0,From',
  71                   t => '0,Msg Time,cldatetime',
  72                   private => '5,Private,yesno',
  73                   subject => '0,Subject',
  74                   linesreq => '0,Lines per Gob',
  75                   rrreq => '5,Read Confirm,yesno',
  76                   origin => '0,Origin',
  77                   lines => '5,Data',
  78                   stream => '9,Stream No',
  79                   count => '5,Gob Linecnt',
  80                   file => '5,File?,yesno',
  81                   gotit => '5,Got it Nodes,parray',
  82                   lines => '5,Lines,parray',
  83                   'read' => '5,Times read',
  84                   size => '0,Size',
  85                   msgno => '0,Msgno',
  86                   keep => '0,Keep this?,yesno',
  87                   lastt => '5,Last processed,cldatetime',
  88                   waitt => '5,Wait until,cldatetime',
  89                  );
  90
  91 # allocate a new object
  92 # called fromnode, tonode, from, to, datetime, private?, subject, nolinesper
  93 sub alloc
  94 {
  95         my $pkg = shift;
  96         my $self = bless {}, $pkg;
  97         $self->{msgno} = shift;
  98         my $to = shift;
  99         #  $to =~ s/-\d+$//o;
 100         $self->{to} = ($to eq $main::mycall) ? $main::myalias : $to;
 101         my $from = shift;
 102         $from =~ s/-\d+$//o;
 103         $self->{from} = uc $from;
 104         $self->{t} = shift;
 105         $self->{private} = shift;
 106         $self->{subject} = shift;
 107         $self->{origin} = shift;
 108         $self->{'read'} = shift;
 109         $self->{rrreq} = shift;
 110         $self->{gotit} = [];
 111 #       $self->{lastt} = $main::systime;
 112         $self->{lines} = [];
 113         $self->{private} = 1 if $bulltopriv && DXUser->get_current($self->{to});
 114
 115         return $self;
 116 }
 117
 118 sub workclean
 119 {
 120         my $ref = shift;
 121         delete $ref->{lines};
 122         delete $ref->{linesreq};
 123         delete $ref->{tonode};
 124         delete $ref->{fromnode};
 125         delete $ref->{stream};
 126         delete $ref->{file};
 127         delete $ref->{count};
 128         delete $ref->{lastt} if exists $ref->{lastt};
 129         delete $ref->{waitt} if exists $ref->{waitt};
 130 }
 131
 132 sub process
 133 {
 134         my ($self, $line) = @_;
 135
 136         # this is periodic processing
 137         if (!$self || !$line) {
 138
 139                 if ($main::systime >= $lastq + $queueinterval) {
 140
 141                         # queue some message if the interval timer has gone off
 142                         queue_msg(0);
 143
 144                         # import any messages in the import directory
 145                         import_msgs();
 146
 147                         $lastq = $main::systime;
 148                 }
 149
 150                 # clean the message queue
 151                 clean_old() if $main::systime - $last_clean > 3600 ;
 152                 return;
 153         }
 154
 155         my @f = split /\^/, $line;
 156         my ($pcno) = $f[0] =~ /^PC(\d\d)/; # just get the number
 157         my ($tonode, $fromnode) = @f[1, 2];
 158         my $stream = $f[3] if $pcno > 29 && $pcno <= 33;
 159
 160  SWITCH: {
 161                 if ($pcno == 28) {              # incoming message
 162
 163                         # sort out various extant protocol errors that occur
 164                         my $origin = $f[13];
 165                         $origin = $self->call unless $origin && $origin gt ' ';
 166
 167                         # first look for any messages in the busy queue
 168                         # and cancel them this should both resolve timed out incoming messages
 169                         # and crossing of message between nodes, incoming messages have priority
 170
 171                         if (exists $busy{$fromnode}) {
 172                                 my $ref = $busy{$fromnode};
 173                                 my $otonode = $ref->{tonode} || "unknown";
 174                                 dbg("Busy, stopping msgno: $ref->{msgno} $fromnode->$otonode") if isdbg('msg');
 175                                 $ref->stop_msg($fromnode);
 176                         }
 177
 178                         my $t = cltounix($f[5], $f[6]);
 179                         $stream = next_transno($fromnode);
 180                         my $ref = DXMsg->alloc($stream, uc $f[3], $f[4], $t, $f[7], $f[8], $origin, '0', $f[11]);
 181
 182                         # fill in various forwarding state variables
 183                         $ref->{fromnode} = $fromnode;
 184                         $ref->{tonode} = $tonode;
 185                         $ref->{rrreq} = $f[11];
 186                         $ref->{linesreq} = $f[10];
 187                         $ref->{stream} = $stream;
 188                         $ref->{count} = 0;      # no of lines between PC31s
 189                         dbg("new message from $f[4] to $f[3] '$f[8]' stream $fromnode/$stream\n") if isdbg('msg');
 190                         Log('msg', "Incoming message $f[4] to $f[3] '$f[8]' origin: $origin" );
 191                         $work{"$fromnode,$stream"} = $ref; # store in work
 192                         $busy{$fromnode} = $ref; # set interlock
 193                         $self->send(DXProt::pc30($fromnode, $tonode, $stream)); # send ack
 194                         $ref->{lastt} = $main::systime;
 195
 196                         # look to see whether this is a non private message sent to a known callsign
 197                         my $uref = DXUser->get_current($ref->{to});
 198                         if (is_callsign($ref->{to}) && !$ref->{private} && $uref && $uref->homenode) {
 199                                 $ref->{private} = 1;
 200                                 dbg("set bull to $ref->{to} to private") if isdbg('msg');
 201                                 Log('msg', "set bull to $ref->{to} to private");
 202                         }
 203                         last SWITCH;
 204                 }
 205
 206                 if ($pcno == 29) {              # incoming text
 207                         my $ref = $work{"$fromnode,$stream"};
 208                         if ($ref) {
 209                                 $f[4] =~ s/\%5E/^/g;
 210                                 push @{$ref->{lines}}, $f[4];
 211                                 $ref->{count}++;
 212                                 if ($ref->{count} >= $ref->{linesreq}) {
 213                                         $self->send(DXProt::pc31($fromnode, $tonode, $stream));
 214                                         dbg("stream $stream: $ref->{count} lines received\n") if isdbg('msg');
 215                                         $ref->{count} = 0;
 216                                 }
 217                                 $ref->{lastt} = $main::systime;
 218                         } else {
 219                                 dbg("PC29 from unknown stream $stream from $fromnode") if isdbg('msg');
 220                                 $self->send(DXProt::pc42($fromnode, $tonode, $stream)); # unknown stream
 221                         }
 222                         last SWITCH;
 223                 }
 224
 225                 if ($pcno == 30) {              # this is a incoming subject ack
 226                         my $ref = $work{"$fromnode,"};  # note no stream at this stage
 227                         if ($ref) {
 228                                 delete $work{"$fromnode,"};
 229                                 $ref->{stream} = $stream;
 230                                 $ref->{count} = 0;
 231                                 $ref->{linesreq} = 5;
 232                                 $work{"$fromnode,$stream"} = $ref;      # new ref
 233                                 dbg("incoming subject ack stream $stream\n") if isdbg('msg');
 234                                 $busy{$fromnode} = $ref; # interlock
 235                                 push @{$ref->{lines}}, ($ref->read_msg_body);
 236                                 $ref->send_tranche($self);
 237                                 $ref->{lastt} = $main::systime;
 238                         } else {
 239                                 dbg("PC30 from unknown stream $stream from $fromnode") if isdbg('msg');
 240                                 $self->send(DXProt::pc42($fromnode, $tonode, $stream)); # unknown stream
 241                         }
 242                         last SWITCH;
 243                 }
 244
 245                 if ($pcno == 31) {              # acknowledge a tranche of lines
 246                         my $ref = $work{"$fromnode,$stream"};
 247                         if ($ref) {
 248                                 dbg("tranche ack stream $stream\n") if isdbg('msg');
 249                                 $ref->send_tranche($self);
 250                                 $ref->{lastt} = $main::systime;
 251                         } else {
 252                                 dbg("PC31 from unknown stream $stream from $fromnode") if isdbg('msg');
 253                                 $self->send(DXProt::pc42($fromnode, $tonode, $stream)); # unknown stream
 254                         }
 255                         last SWITCH;
 256                 }
 257
 258                 if ($pcno == 32) {              # incoming EOM
 259                         dbg("stream $stream: EOM received\n") if isdbg('msg');
 260                         my $ref = $work{"$fromnode,$stream"};
 261                         if ($ref) {
 262                                 $self->send(DXProt::pc33($fromnode, $tonode, $stream)); # acknowledge it
 263
 264                                 # get the next msg no - note that this has NOTHING to do with the stream number in PC protocol
 265                                 # store the file or message
 266                                 # remove extraneous rubbish from the hash
 267                                 # remove it from the work in progress vector
 268                                 # stuff it on the msg queue
 269                                 if ($ref->{lines}) {
 270                                         if ($ref->{file}) {
 271                                                 $ref->store($ref->{lines});
 272                                         } else {
 273
 274                                                 # does an identical message already exist?
 275                                                 my $m;
 276                                                 for $m (@msg) {
 277                                                         if ($ref->{subject} eq $m->{subject} && $ref->{t} == $m->{t} && $ref->{from} eq $m->{from} && $ref->{to} eq $m->{to}) {
 278                                                                 $ref->stop_msg($fromnode);
 279                                                                 my $msgno = $m->{msgno};
 280                                                                 dbg("duplicate message from $ref->{from} -> $ref->{to} to msg: $msgno") if isdbg('msg');
 281                                                                 Log('msg', "duplicate message from $ref->{from} -> $ref->{to} to msg: $msgno");
 282                                                                 return;
 283                                                         }
 284                                                 }
 285
 286                                                 # swop addresses
 287                                                 $ref->swop_it($self->call);
 288
 289                                                 # look for 'bad' to addresses
 290                                                 if ($ref->dump_it($self->call)) {
 291                                                         $ref->stop_msg($fromnode);
 292                                                         dbg("'Bad' message $ref->{to}") if isdbg('msg');
 293                                                         Log('msg', "'Bad' message $ref->{to}");
 294                                                         return;
 295                                                 }
 296
 297                                                 # check the message for bad words
 298                                                 my @words;
 299                                                 for (@{$ref->{lines}}) {
 300                                                         push @words, BadWords::check($_);
 301                                                 }
 302                                                 push @words, BadWords::check($ref->{subject});
 303                                                 if (@words) {
 304                                                         dbg("message with badwords '@words' $ref->{from} -> $ref->{to} '$ref->{subject}' origin: $ref->{origin} via " . $self->call) if isdbg('msg');
 305                                                         Log('msg',"message with badwords '@words' $ref->{from} -> $ref->{to} origin: $ref->{origin} via " . $self->call);
 306                                                         Log('msg',"subject: $ref->{subject}");
 307                                                         for (@{$ref->{lines}}) {
 308                                                                 Log('msg', "line: $_");
 309                                                         }
 310                                                         $ref->stop_msg($fromnode);
 311                                                         return;
 312                                                 }
 313
 314                                                 $ref->{msgno} = next_transno("Msgno");
 315                                                 push @{$ref->{gotit}}, $fromnode; # mark this up as being received
 316                                                 $ref->store($ref->{lines});
 317                                                 add_dir($ref);
 318                                                 my $dxchan = DXChannel->get($ref->{to});
 319                                                 $dxchan->send($dxchan->msg('m9')) if $dxchan && $dxchan->is_user;
 320                                                 Log('msg', "Message $ref->{msgno} from $ref->{from} received from $fromnode for $ref->{to}");
 321                                         }
 322                                 }
 323                                 $ref->stop_msg($fromnode);
 324                         } else {
 325                                 dbg("PC32 from unknown stream $stream from $fromnode") if isdbg('msg');
 326                                 $self->send(DXProt::pc42($fromnode, $tonode, $stream)); # unknown stream
 327                         }
 328                         # queue_msg(0);
 329                         last SWITCH;
 330                 }
 331
 332                 if ($pcno == 33) {              # acknowledge the end of message
 333                         my $ref = $work{"$fromnode,$stream"};
 334                         if ($ref) {
 335                                 if ($ref->{private}) { # remove it if it private and gone off site#
 336                                         Log('msg', "Message $ref->{msgno} from $ref->{from} sent to $fromnode and deleted");
 337                                         $ref->del_msg;
 338                                 } else {
 339                                         Log('msg', "Message $ref->{msgno} from $ref->{from} sent to $fromnode");
 340                                         push @{$ref->{gotit}}, $fromnode; # mark this up as being received
 341                                         $ref->store($ref->{lines});     # re- store the file
 342                                 }
 343                                 $ref->stop_msg($fromnode);
 344                         } else {
 345                                 dbg("PC33 from unknown stream $stream from $fromnode") if isdbg('msg');
 346                                 $self->send(DXProt::pc42($fromnode, $tonode, $stream)); # unknown stream
 347                         }
 348
 349                         # send next one if present
 350                         queue_msg(0);
 351                         last SWITCH;
 352                 }
 353
 354                 if ($pcno == 40) {              # this is a file request
 355                         $f[3] =~ s/\\/\//og; # change the slashes
 356                         $f[3] =~ s/\.//og;      # remove dots
 357                         $f[3] =~ s/^\///o;   # remove the leading /
 358                         $f[3] = lc $f[3];       # to lower case;
 359                         dbg("incoming file $f[3]\n") if isdbg('msg');
 360                         $f[3] = 'packclus/' . $f[3] unless $f[3] =~ /^packclus\//o;
 361
 362                         # create any directories
 363                         my @part = split /\//, $f[3];
 364                         my $part;
 365                         my $fn = "$main::root";
 366                         pop @part;                      # remove last part
 367                         foreach $part (@part) {
 368                                 $fn .= "/$part";
 369                                 next if -e $fn;
 370                                 last SWITCH if !mkdir $fn, 0777;
 371                                 dbg("created directory $fn\n") if isdbg('msg');
 372                         }
 373                         my $stream = next_transno($fromnode);
 374                         my $ref = DXMsg->alloc($stream, "$main::root/$f[3]", $self->call, time, !$f[4], $f[3], ' ', '0', '0');
 375
 376                         # forwarding variables
 377                         $ref->{fromnode} = $tonode;
 378                         $ref->{tonode} = $fromnode;
 379                         $ref->{linesreq} = $f[5];
 380                         $ref->{stream} = $stream;
 381                         $ref->{count} = 0;      # no of lines between PC31s
 382                         $ref->{file} = 1;
 383                         $ref->{lastt} = $main::systime;
 384                         $work{"$fromnode,$stream"} = $ref; # store in work
 385                         $self->send(DXProt::pc30($fromnode, $tonode, $stream)); # send ack
 386
 387                         last SWITCH;
 388                 }
 389
 390                 if ($pcno == 42) {              # abort transfer
 391                         dbg("stream $stream: abort received\n") if isdbg('msg');
 392                         my $ref = $work{"$fromnode,$stream"};
 393                         if ($ref) {
 394                                 $ref->stop_msg($fromnode);
 395                                 $ref = undef;
 396                         }
 397                         last SWITCH;
 398                 }
 399
 400                 if ($pcno == 49) {      # global delete on subject
 401                         for (@msg) {
 402                                 if ($_->{from} eq $f[1] && $_->{subject} eq $f[2]) {
 403                                         $_->del_msg();
 404                                         Log('msg', "Message $_->{msgno} from $_->{from} ($_->{subject}) fully deleted");
 405                                         DXChannel::broadcast_nodes($line, $self);
 406                                 }
 407                         }
 408                 }
 409         }
 410 }
 411
 412
 413 # store a message away on disc or whatever
 414 #
 415 # NOTE the second arg is a REFERENCE not a list
 416 sub store
 417 {
 418         my $ref = shift;
 419         my $lines = shift;
 420
 421         if ($ref->{file}) {                     # a file
 422                 dbg("To be stored in $ref->{to}\n") if isdbg('msg');
 423
 424                 my $fh = new IO::File "$ref->{to}", "w";
 425                 if (defined $fh) {
 426                         my $line;
 427                         foreach $line (@{$lines}) {
 428                                 print $fh "$line\n";
 429                         }
 430                         $fh->close;
 431                         dbg("file $ref->{to} stored\n") if isdbg('msg');
 432                         Log('msg', "file $ref->{to} from $ref->{from} stored" );
 433                 } else {
 434                         confess "can't open file $ref->{to} $!";
 435                 }
 436         } else {                                        # a normal message
 437
 438                 # attempt to open the message file
 439                 my $fn = filename($ref->{msgno});
 440
 441                 dbg("To be stored in $fn\n") if isdbg('msg');
 442
 443                 # now save the file, overwriting what's there, YES I KNOW OK! (I will change it if it's a problem)
 444                 my $fh = new IO::File "$fn", "w";
 445                 if (defined $fh) {
 446                         my $rr = $ref->{rrreq} ? '1' : '0';
 447                         my $priv = $ref->{private} ? '1': '0';
 448                         print $fh "=== $ref->{msgno}^$ref->{to}^$ref->{from}^$ref->{t}^$priv^$ref->{subject}^$ref->{origin}^$ref->{'read'}^$rr\n";
 449                         print $fh "=== ", join('^', @{$ref->{gotit}}), "\n";
 450                         my $line;
 451                         $ref->{size} = 0;
 452                         foreach $line (@{$lines}) {
 453                                 $ref->{size} += (length $line) + 1;
 454                                 print $fh "$line\n";
 455                         }
 456                         $fh->close;
 457                         dbg("msg $ref->{msgno} stored\n") if isdbg('msg');
 458                         Log('msg', "msg $ref->{msgno} from $ref->{from} to $ref->{to} stored" );
 459                 } else {
 460                         confess "can't open msg file $fn $!";
 461                 }
 462         }
 463 }
 464
 465 # delete a message
 466 sub del_msg
 467 {
 468         my $self = shift;
 469
 470         # remove it from the active message list
 471         dbg("\@msg = " . scalar @msg . " before delete") if isdbg('msg');
 472         @msg = grep { $_ != $self } @msg;
 473
 474         # remove the file
 475         unlink filename($self->{msgno});
 476         dbg("deleting $self->{msgno}\n") if isdbg('msg');
 477         dbg("\@msg = " . scalar @msg . " after delete") if isdbg('msg');
 478 }
 479
 480 # clean out old messages from the message queue
 481 sub clean_old
 482 {
 483         my $ref;
 484
 485         # mark old messages for deletion
 486         dbg("\@msg = " . scalar @msg . " before delete") if isdbg('msg');
 487         foreach $ref (@msg) {
 488                 if (ref($ref) && !$ref->{keep} && $ref->{t} < $main::systime - $maxage) {
 489                         $ref->{deleteme} = 1;
 490                         unlink filename($ref->{msgno});
 491                         dbg("deleting old $ref->{msgno}\n") if isdbg('msg');
 492                 }
 493         }
 494
 495         # remove them all from the active message list
 496         @msg = grep { !$_->{deleteme} } @msg;
 497         dbg("\@msg = " . scalar @msg . " after delete") if isdbg('msg');
 498         $last_clean = $main::systime;
 499 }
 500
 501 # read in a message header
 502 sub read_msg_header
 503 {
 504         my $fn = shift;
 505         my $file;
 506         my $line;
 507         my $ref;
 508         my @f;
 509         my $size;
 510
 511         $file = new IO::File "$fn";
 512         if (!$file) {
 513             dbg("Error reading $fn $!");
 514             Log('err', "Error reading $fn $!");
 515                 return undef;
 516         }
 517         $size = -s $fn;
 518         $line = <$file>;                        # first line
 519         if ($size == 0 || !$line) {
 520             dbg("Empty $fn $!");
 521             Log('err', "Empty $fn $!");
 522                 return undef;
 523         }
 524         chomp $line;
 525         $size -= length $line;
 526         if (! $line =~ /^===/o) {
 527                 dbg("corrupt first line in $fn ($line)");
 528                 Log('err', "corrupt first line in $fn ($line)");
 529                 return undef;
 530         }
 531         $line =~ s/^=== //o;
 532         @f = split /\^/, $line;
 533         $ref = DXMsg->alloc(@f);
 534
 535         $line = <$file>;                        # second line
 536         chomp $line;
 537         $size -= length $line;
 538         if (! $line =~ /^===/o) {
 539             dbg("corrupt second line in $fn ($line)");
 540             Log('err', "corrupt second line in $fn ($line)");
 541                 return undef;
 542         }
 543         $line =~ s/^=== //o;
 544         $ref->{gotit} = [];
 545         @f = split /\^/, $line;
 546         push @{$ref->{gotit}}, @f;
 547         $ref->{size} = $size;
 548
 549         close($file);
 550
 551         return $ref;
 552 }
 553
 554 # read in a message header
 555 sub read_msg_body
 556 {
 557         my $self = shift;
 558         my $msgno = $self->{msgno};
 559         my $file;
 560         my $line;
 561         my $fn = filename($msgno);
 562         my @out;
 563
 564         $file = new IO::File;
 565         if (!open($file, $fn)) {
 566                 dbg("Error reading $fn $!");
 567                 Log('err' ,"Error reading $fn $!");
 568                 return undef;
 569         }
 570         @out = map {chomp; $_} <$file>;
 571         close($file);
 572
 573         shift @out if $out[0] =~ /^=== /;
 574         shift @out if $out[0] =~ /^=== /;
 575         return @out;
 576 }
 577
 578 # send a tranche of lines to the other end
 579 sub send_tranche
 580 {
 581         my ($self, $dxchan) = @_;
 582         my @out;
 583         my $to = $self->{tonode};
 584         my $from = $self->{fromnode};
 585         my $stream = $self->{stream};
 586         my $lines = $self->{lines};
 587         my ($c, $i);
 588
 589         for ($i = 0, $c = $self->{count}; $i < $self->{linesreq} && $c < @$lines; $i++, $c++) {
 590                 push @out, DXProt::pc29($to, $from, $stream, $lines->[$c]);
 591     }
 592     $self->{count} = $c;
 593
 594     push @out, DXProt::pc32($to, $from, $stream) if $i < $self->{linesreq};
 595         $dxchan->send(@out);
 596 }
 597
 598
 599 # find a message to send out and start the ball rolling
 600 sub queue_msg
 601 {
 602         my $sort = shift;
 603         my $ref;
 604         my $clref;
 605
 606         # bat down the message list looking for one that needs to go off site and whose
 607         # nearest node is not busy.
 608
 609         dbg("queue msg ($sort)\n") if isdbg('msg');
 610         my @nodelist = DXChannel::get_all_nodes;
 611         foreach $ref (@msg) {
 612
 613                 # ignore 'delayed' messages until their waiting time has expired
 614                 if (exists $ref->{waitt}) {
 615                         next if $ref->{waitt} > $main::systime;
 616                         delete $ref->{waitt};
 617                 }
 618
 619                 # any time outs?
 620                 if (exists $ref->{lastt} && $main::systime >= $ref->{lastt} + $timeout) {
 621                         my $node = $ref->{tonode};
 622                         dbg("Timeout, stopping msgno: $ref->{msgno} -> $node") if isdbg('msg');
 623                         Log('msg', "Timeout, stopping msgno: $ref->{msgno} -> $node");
 624                         $ref->stop_msg($node);
 625
 626                         # delay any outgoing messages that fail
 627                         $ref->{waitt} = $main::systime + $waittime + rand(120) if $node ne $main::mycall;
 628                         delete $ref->{lastt};
 629                         next;
 630                 }
 631
 632                 # firstly, is it private and unread? if so can I find the recipient
 633                 # in my cluster node list offsite?
 634
 635                 # deal with routed private messages
 636                 my $dxchan;
 637                 if ($ref->{private}) {
 638                         next if $ref->{'read'};           # if it is read, it is stuck here
 639                         $clref = Route::get($ref->{to});
 640 #                       unless ($clref) {             # otherwise look for a homenode
 641 #                               my $uref = DXUser->get_current($ref->{to});
 642 #                               my $hnode =  $uref->homenode if $uref;
 643 #                               $clref = Route::Node::get($hnode) if $hnode;
 644 #                       }
 645                         if ($clref) {
 646                                 $dxchan = $clref->dxchan;
 647                                 if ($dxchan) {
 648                                         if ($dxchan->is_node) {
 649                                                 next if $clref->call eq $main::mycall;  # i.e. it lives here
 650                                                 $ref->start_msg($dxchan) if !get_busy($dxchan->call)  && $dxchan->state eq 'normal';
 651                                         }
 652                                 } else {
 653                                         dbg("Route: No dxchan for $ref->{to} " . ref($clref) ) if isdbg('msg');
 654                                 }
 655                         }
 656                 } else {
 657
 658                         # otherwise we are dealing with a bulletin or forwarded private message
 659                         # compare the gotit list with
 660                         # the nodelist up above, if there are sites that haven't got it yet
 661                         # then start sending it - what happens when we get loops is anyone's
 662                         # guess, use (to, from, time, subject) tuple?
 663                         foreach $dxchan (@nodelist) {
 664                                 my $call = $dxchan->call;
 665                                 next unless $call;
 666                                 next if $call eq $main::mycall;
 667                                 next if ref $ref->{gotit} && grep $_ eq $call, @{$ref->{gotit}};
 668                                 next unless $ref->forward_it($call);           # check the forwarding file
 669
 670                                 # if we are here we have a node that doesn't have this message
 671                                 if (!get_busy($call)  && $dxchan->state eq 'normal') {
 672                                         $ref->start_msg($dxchan);
 673                                         last;
 674                                 }
 675                         }
 676                 }
 677
 678                 # if all the available nodes are busy then stop
 679                 last if @nodelist == scalar grep { get_busy($_->call) } @nodelist;
 680         }
 681 }
 682
 683 # is there a message for me?
 684 sub for_me
 685 {
 686         my $call = uc shift;
 687         my $ref;
 688
 689         foreach $ref (@msg) {
 690                 # is it for me, private and unread?
 691                 if ($ref->{to} eq $call && $ref->{private}) {
 692                         return 1 if !$ref->{'read'};
 693                 }
 694         }
 695         return 0;
 696 }
 697
 698 # start the message off on its travels with a PC28
 699 sub start_msg
 700 {
 701         my ($self, $dxchan) = @_;
 702
 703         dbg("start msg $self->{msgno}\n") if isdbg('msg');
 704         $self->{linesreq} = 10;
 705         $self->{count} = 0;
 706         $self->{tonode} = $dxchan->call;
 707         $self->{fromnode} = $main::mycall;
 708         $busy{$self->{tonode}} = $self;
 709         $work{"$self->{tonode},"} = $self;
 710         $self->{lastt} = $main::systime;
 711         my ($fromnode, $origin);
 712         $fromnode = $self->{fromnode};
 713         $origin = $self->{origin};
 714         $dxchan->send(DXProt::pc28($self->{tonode}, $fromnode, $self->{to}, $self->{from}, $self->{t}, $self->{private}, $self->{subject}, $origin, $self->{rrreq}));
 715 }
 716
 717 # get the ref of a busy node
 718 sub get_busy
 719 {
 720         my $call = shift;
 721         return $busy{$call};
 722 }
 723
 724 # get the busy queue
 725 sub get_all_busy
 726 {
 727         return values %busy;
 728 }
 729
 730 # get the forwarding queue
 731 sub get_fwq
 732 {
 733         return values %work;
 734 }
 735
 736 # stop a message from continuing, clean it out, unlock interlocks etc
 737 sub stop_msg
 738 {
 739         my $self = shift;
 740         my $node = shift;
 741         my $stream = $self->{stream} if exists $self->{stream};
 742
 743
 744         dbg("stop msg $self->{msgno} -> node $node\n") if isdbg('msg');
 745         delete $work{"$node,"};
 746         delete $work{"$node,$stream"} if $stream;
 747         $self->workclean;
 748         delete $busy{$node};
 749 }
 750
 751 # get a new transaction number from the file specified
 752 sub next_transno
 753 {
 754         my $name = shift;
 755         $name =~ s/\W//og;                      # remove non-word characters
 756         my $fn = "$msgdir/$name";
 757         my $msgno;
 758
 759         my $fh = new IO::File;
 760         if (sysopen($fh, $fn, O_RDWR|O_CREAT, 0666)) {
 761                 $fh->autoflush(1);
 762                 $msgno = $fh->getline || '0';
 763                 chomp $msgno;
 764                 $msgno++;
 765                 seek $fh, 0, 0;
 766                 $fh->print("$msgno\n");
 767                 dbg("msgno $msgno allocated for $name\n") if isdbg('msg');
 768                 $fh->close;
 769         } else {
 770                 confess "can't open $fn $!";
 771         }
 772         return $msgno;
 773 }
 774
 775 # initialise the message 'system', read in all the message headers
 776 sub init
 777 {
 778         my $dir = new IO::File;
 779         my @dir;
 780         my $ref;
 781
 782         # load various control files
 783         dbg("load badmsg: " . (load_badmsg() or "Ok"));
 784         dbg("load forward: " . (load_forward() or "Ok"));
 785         dbg("load swop: " . (load_swop() or "Ok"));
 786
 787         # read in the directory
 788         opendir($dir, $msgdir) or confess "can't open $msgdir $!";
 789         @dir = readdir($dir);
 790         closedir($dir);
 791
 792         @msg = ();
 793         for (sort @dir) {
 794                 next unless /^m\d\d\d\d\d\d$/;
 795
 796                 $ref = read_msg_header("$msgdir/$_");
 797                 unless ($ref) {
 798                         dbg("Deleting $_");
 799                         Log('err', "Deleting $_");
 800                         unlink "$msgdir/$_";
 801                         next;
 802                 }
 803
 804                 # delete any messages to 'badmsg.pl' places
 805                 if ($ref->dump_it('')) {
 806                         dbg("'Bad' TO address $ref->{to}") if isdbg('msg');
 807                         Log('msg', "'Bad' TO address $ref->{to}");
 808                         $ref->del_msg;
 809                         next;
 810                 }
 811
 812                 # add the message to the available queue
 813                 add_dir($ref);
 814         }
 815 }
 816
 817 # add the message to the directory listing
 818 sub add_dir
 819 {
 820         my $ref = shift;
 821         confess "tried to add a non-ref to the msg directory" if !ref $ref;
 822         push @msg, $ref;
 823 }
 824
 825 # return all the current messages
 826 sub get_all
 827 {
 828         return @msg;
 829 }
 830
 831 # get a particular message
 832 sub get
 833 {
 834         my $msgno = shift;
 835         for (@msg) {
 836                 return $_ if $_->{msgno} == $msgno;
 837                 last if $_->{msgno} > $msgno;
 838         }
 839         return undef;
 840 }
 841
 842 # return the official filename for a message no
 843 sub filename
 844 {
 845         return sprintf "$msgdir/m%06d", shift;
 846 }
 847
 848 #
 849 # return a list of valid elements
 850 #
 851
 852 sub fields
 853 {
 854         return keys(%valid);
 855 }
 856
 857 #
 858 # return a prompt for a field
 859 #
 860
 861 sub field_prompt
 862 {
 863         my ($self, $ele) = @_;
 864         return $valid{$ele};
 865 }
 866
 867 #
 868 # send a message state machine
 869 sub do_send_stuff
 870 {
 871         my $self = shift;
 872         my $line = shift;
 873         my @out;
 874
 875         if ($self->state eq 'send1') {
 876                 #  $DB::single = 1;
 877                 confess "local var gone missing" if !ref $self->{loc};
 878                 my $loc = $self->{loc};
 879                 if (my @ans = BadWords::check($line)) {
 880                         $self->{badcount} += @ans;
 881                         Log('msg', $self->call . " used badwords: @ans to @{$loc->{to}} in msg");
 882                         return ($self->msg('e17', @ans), $self->msg('m1'));
 883                 }
 884                 $loc->{subject} = $line;
 885                 $loc->{lines} = [];
 886                 $self->state('sendbody');
 887                 #push @out, $self->msg('sendbody');
 888                 push @out, $self->msg('m8');
 889         } elsif ($self->state eq 'sendbody') {
 890                 confess "local var gone missing" if !ref $self->{loc};
 891                 my $loc = $self->{loc};
 892                 if ($line eq "\032" || $line eq '%1A' || uc $line eq "/EX") {
 893                         my $to;
 894
 895                         foreach $to (@{$loc->{to}}) {
 896                                 my $ref;
 897                                 my $systime = $main::systime;
 898                                 my $mycall = $main::mycall;
 899                                 $ref = DXMsg->alloc(DXMsg::next_transno('Msgno'),
 900                                                                         uc $to,
 901                                                                         exists $loc->{from} ? $loc->{from} : $self->call,
 902                                                                         $systime,
 903                                                                         $loc->{private},
 904                                                                         $loc->{subject},
 905                                                                         exists $loc->{origin} ? $loc->{origin} : $mycall,
 906                                                                         '0',
 907                                                                         $loc->{rrreq});
 908                                 $ref->swop_it($self->call);
 909                                 $ref->store($loc->{lines});
 910                                 $ref->add_dir();
 911                                 push @out, $self->msg('m11', $ref->{msgno}, $to);
 912                                 #push @out, "msgno $ref->{msgno} sent to $to";
 913                                 my $dxchan = DXChannel->get(uc $to);
 914                                 if ($dxchan) {
 915                                         if ($dxchan->is_user()) {
 916                                                 $dxchan->send($dxchan->msg('m9'));
 917                                         }
 918                                 }
 919                         }
 920
 921                         delete $loc->{lines};
 922                         delete $loc->{to};
 923                         delete $self->{loc};
 924                         $self->func(undef);
 925
 926                         $self->state('prompt');
 927                 } elsif ($line eq "\031" || uc $line eq "/ABORT" || uc $line eq "/QUIT") {
 928                         #push @out, $self->msg('sendabort');
 929                         push @out, $self->msg('m10');
 930                         delete $loc->{lines};
 931                         delete $loc->{to};
 932                         delete $self->{loc};
 933                         $self->func(undef);
 934                         $self->state('prompt');
 935                 } else {
 936                         if (my @ans = BadWords::check($line)) {
 937                                 $self->{badcount} += @ans;
 938                                 Log('msg', $self->call . " used badwords: @ans to @{$loc->{to}} subject: '$loc->{subject}' in msg");
 939                                 Log('msg', "line: $line");
 940                                 return ($self->msg('e17', @ans));
 941                         }
 942
 943                         # i.e. it ain't and end or abort, therefore store the line
 944                         push @{$loc->{lines}}, length($line) > 0 ? $line : " ";
 945                 }
 946         }
 947         return @out;
 948 }
 949
 950 # return the standard directory line for this ref
 951 sub dir
 952 {
 953         my $ref = shift;
 954         return sprintf "%6d%s%s%5d %8.8s %8.8s %-6.6s %5.5s %-30.30s",
 955                 $ref->msgno, $ref->read ? '-' : ' ', $ref->private ? 'p' : ' ', $ref->size,
 956                         $ref->to, $ref->from, cldate($ref->t), ztime($ref->t), $ref->subject;
 957 }
 958
 959 # load the forward table
 960 sub load_forward
 961 {
 962         my @out;
 963         my $s = readfilestr($forwardfn);
 964         if ($s) {
 965                 eval $s;
 966                 push @out, $@ if $@;
 967         }
 968         return @out;
 969 }
 970
 971 # load the bad message table
 972 sub load_badmsg
 973 {
 974         my @out;
 975         my $s = readfilestr($badmsgfn);
 976         if ($s) {
 977                 eval $s;
 978                 push @out, $@ if $@;
 979         }
 980         return @out;
 981 }
 982
 983 # load the swop message table
 984 sub load_swop
 985 {
 986         my @out;
 987         my $s = readfilestr($swopfn);
 988         if ($s) {
 989                 eval $s;
 990                 push @out, $@ if $@;
 991         }
 992         return @out;
 993 }
 994
 995 #
 996 # forward that message or not according to the forwarding table
 997 # returns 1 for forward, 0 - to ignore
 998 #
 999
1000 sub forward_it
1001 {
1002         my $ref = shift;
1003         my $call = shift;
1004         my $i;
1005
1006         for ($i = 0; $i < @forward; $i += 5) {
1007                 my ($sort, $field, $pattern, $action, $bbs) = @forward[$i..($i+4)];
1008                 my $tested;
1009
1010                 # are we interested?
1011                 next if $ref->{private} && $sort ne 'P';
1012                 next if !$ref->{private} && $sort ne 'B';
1013
1014                 # select field
1015                 $tested = $ref->{to} if $field eq 'T';
1016                 $tested = $ref->{from} if $field eq 'F';
1017                 $tested = $ref->{origin} if $field eq 'O';
1018                 $tested = $ref->{subject} if $field eq 'S';
1019
1020                 if (!$pattern || $tested =~ m{$pattern}i) {
1021                         return 0 if $action eq 'I';
1022                         return 1 if !$bbs || grep $_ eq $call, @{$bbs};
1023                 }
1024         }
1025         return 0;
1026 }
1027
1028 sub dump_it
1029 {
1030         my $ref = shift;
1031         my $call = shift;
1032         my $i;
1033
1034         for ($i = 0; $i < @badmsg; $i += 3) {
1035                 my ($sort, $field, $pattern) = @badmsg[$i..($i+2)];
1036                 my $tested;
1037
1038                 # are we interested?
1039                 next if $ref->{private} && $sort ne 'P';
1040                 next if !$ref->{private} && $sort ne 'B';
1041
1042                 # select field
1043                 $tested = $ref->{to} if $field eq 'T';
1044                 $tested = $ref->{from} if $field eq 'F';
1045                 $tested = $ref->{origin} if $field eq 'O';
1046                 $tested = $ref->{subject} if $field eq 'S';
1047                 $tested = $call if $field eq 'I';
1048
1049                 if (!$pattern || $tested =~ m{$pattern}i) {
1050                         return 1;
1051                 }
1052         }
1053         return 0;
1054 }
1055
1056 sub swop_it
1057 {
1058         my $ref = shift;
1059         my $call = shift;
1060         my $i;
1061         my $count = 0;
1062
1063         for ($i = 0; $i < @swop; $i += 5) {
1064                 my ($sort, $field, $pattern, $tfield, $topattern) = @swop[$i..($i+4)];
1065                 my $tested;
1066                 my $swop;
1067                 my $old;
1068
1069                 # are we interested?
1070                 next if $ref->{private} && $sort ne 'P';
1071                 next if !$ref->{private} && $sort ne 'B';
1072
1073                 # select field
1074                 $tested = $ref->{to} if $field eq 'T';
1075                 $tested = $ref->{from} if $field eq 'F';
1076                 $tested = $ref->{origin} if $field eq 'O';
1077                 $tested = $ref->{subject} if $field eq 'S';
1078
1079                 # select swop field
1080                 $old = $swop = $ref->{to} if $tfield eq 'T';
1081                 $old = $swop = $ref->{from} if $tfield eq 'F';
1082                 $old = $swop = $ref->{origin} if $tfield eq 'O';
1083                 $old = $swop = $ref->{subject} if $tfield eq 'S';
1084
1085                 if ($tested =~ m{$pattern}i) {
1086                         if ($tested eq $swop) {
1087                                 $swop =~ s{$pattern}{$topattern}i;
1088                         } else {
1089                                 $swop = $topattern;
1090                         }
1091                         Log('msg', "Msg $ref->{msgno}: $tfield $old -> $swop");
1092                         Log('dbg', "Msg $ref->{msgno}: $tfield $old -> $swop");
1093                         $ref->{to} = $swop if $tfield eq 'T';
1094                         $ref->{from} = $swop if $tfield eq 'F';
1095                         $ref->{origin} = $swop if $tfield eq 'O';
1096                         $ref->{subject} = $swop if $tfield eq 'S';
1097                         ++$count;
1098                 }
1099         }
1100         return $count;
1101 }
1102
1103 # import any msgs in the import directory
1104 # the messages are in BBS format (but may have cluster extentions
1105 # so SB UK < GB7TLH is legal
1106 sub import_msgs
1107 {
1108         # are there any to do in this directory?
1109         return unless -d $importfn;
1110         unless (opendir(DIR, $importfn)) {
1111                 dbg("can\'t open $importfn $!") if isdbg('msg');
1112                 Log('msg', "can\'t open $importfn $!");
1113                 return;
1114         }
1115
1116         my @names = readdir(DIR);
1117         closedir(DIR);
1118         my $name;
1119         foreach $name (@names) {
1120                 next if $name =~ /^\./;
1121                 my $splitit = $name =~ /^split/;
1122                 my $fn = "$importfn/$name";
1123                 next unless -f $fn;
1124                 unless (open(MSG, $fn)) {
1125                         dbg("can\'t open import file $fn $!") if isdbg('msg');
1126                         Log('msg', "can\'t open import file $fn $!");
1127                         unlink($fn);
1128                         next;
1129                 }
1130                 my @msg = map { chomp; $_ } <MSG>;
1131                 close(MSG);
1132                 unlink($fn);
1133                 my @out = import_one($main::me, \@msg, $splitit);
1134                 Log('msg', @out);
1135         }
1136 }
1137
1138 # import one message as a list in bbs (as extended) mode
1139 # takes a reference to an array containing the whole message
1140 sub import_one
1141 {
1142         my $dxchan = shift;
1143         my $ref = shift;
1144         my $splitit = shift;
1145         my $private = '1';
1146         my $rr = '0';
1147         my $notincalls = 1;
1148         my $from = $dxchan->call;
1149         my $origin = $main::mycall;
1150         my @to;
1151         my @out;
1152
1153         # first line;
1154         my $line = shift @$ref;
1155         my @f = split /\s+/, $line;
1156         unless (@f && $f[0] =~ /^(:?S|SP|SB|SEND)$/ ) {
1157                 my $m = "invalid first line in import '$line'";
1158                 dbg($m) if isdbg('msg');
1159                 return (1, $m);
1160         }
1161         while (@f) {
1162                 my $f = uc shift @f;
1163                 next if $f eq 'SEND';
1164
1165                 # private / noprivate / rr
1166                 if ($notincalls && ($f eq 'B' || $f eq 'SB' || $f =~ /^NOP/oi)) {
1167                         $private = '0';
1168                 } elsif ($notincalls && ($f eq 'P' || $f eq 'SP' || $f =~ /^PRI/oi)) {
1169                         ;
1170                 } elsif ($notincalls && ($f eq 'RR')) {
1171                         $rr = '1';
1172                 } elsif ($f eq '@' && @f) {       # this is bbs syntax, for origin
1173                         $origin = uc shift @f;
1174                 } elsif ($f eq '<' && @f) {     # this is bbs syntax  for from call
1175                         $from = uc shift @f;
1176                 } elsif ($f =~ /^\$/) {     # this is bbs syntax  for a bid
1177                         next;
1178                 } elsif ($f =~ /^<\S+/) {     # this is bbs syntax  for from call
1179                         ($from) = $f =~ /^<(\S+)$/;
1180                 } elsif ($f =~ /^\@\S+/) {     # this is bbs syntax for origin
1181                         ($origin) = $f =~ /^\@(\S+)$/;
1182                 } else {
1183
1184                         # callsign ?
1185                         $notincalls = 0;
1186
1187                         # is this callsign a distro?
1188                         my $fn = "$msgdir/distro/$f.pl";
1189                         if (-e $fn) {
1190                                 my $fh = new IO::File $fn;
1191                                 if ($fh) {
1192                                         local $/ = undef;
1193                                         my $s = <$fh>;
1194                                         $fh->close;
1195                                         my @call;
1196                                         @call = eval $s;
1197                                         return (1, "Error in Distro $f.pl:", $@) if $@;
1198                                         if (@call > 0) {
1199                                                 push @f, @call;
1200                                                 next;
1201                                         }
1202                                 }
1203                         }
1204
1205                         if (grep $_ eq $f, @DXMsg::badmsg) {
1206                                 push @out, $dxchan->msg('m3', $f);
1207                         } else {
1208                                 push @to, $f;
1209                         }
1210                 }
1211         }
1212
1213         # subject is the next line
1214         my $subject = shift @$ref;
1215
1216         # strip off trailing lines
1217         pop @$ref while (@$ref && $$ref[-1] =~ /^\s*$/);
1218
1219         # strip off /EX or /ABORT
1220         return ("aborted") if @$ref && $$ref[-1] =~ m{^/ABORT$}i;
1221         pop @$ref if (@$ref && $$ref[-1] =~ m{^/EX$}i);
1222
1223         # sort out any splitting that needs to be done
1224         my @chunk;
1225         if ($splitit) {
1226                 my $lth = 0;
1227                 my $lines = [];
1228                 for (@$ref) {
1229                         if ($lth >= $maxchunk || ($lth > $minchunk && /^\s*$/)) {
1230                                 push @chunk, $lines;
1231                                 $lines = [];
1232                                 $lth = 0;
1233                         }
1234                         push @$lines, $_;
1235                         $lth += length;
1236                 }
1237                 push @chunk, $lines if @$lines;
1238         } else {
1239                 push @chunk, $ref;
1240         }
1241
1242     # write all the messages away
1243         my $i;
1244         for ( $i = 0;  $i < @chunk; $i++) {
1245                 my $chunk = $chunk[$i];
1246                 my $ch_subject;
1247                 if (@chunk > 1) {
1248                         my $num = " [" . ($i+1) . "/" . scalar @chunk . "]";
1249                         $ch_subject = substr($subject, 0, 27 - length $num) .  $num;
1250                 } else {
1251                         $ch_subject = $subject;
1252                 }
1253                 my $to;
1254                 foreach $to (@to) {
1255                         my $systime = $main::systime;
1256                         my $mycall = $main::mycall;
1257                         my $mref = DXMsg->alloc(DXMsg::next_transno('Msgno'),
1258                                                                         $to,
1259                                                                         $from,
1260                                                                         $systime,
1261                                                                         $private,
1262                                                                         $ch_subject,
1263                                                                         $origin,
1264                                                                         '0',
1265                                                                         $rr);
1266                         $mref->swop_it($main::mycall);
1267                         $mref->store($chunk);
1268                         $mref->add_dir();
1269                         push @out, $dxchan->msg('m11', $mref->{msgno}, $to);
1270                         #push @out, "msgno $ref->{msgno} sent to $to";
1271                         my $todxchan = DXChannel->get(uc $to);
1272                         if ($todxchan) {
1273                                 if ($todxchan->is_user()) {
1274                                         $todxchan->send($todxchan->msg('m9'));
1275                                 }
1276                         }
1277                 }
1278         }
1279         return @out;
1280 }
1281
1282 no strict;
1283 sub AUTOLOAD
1284 {
1285         my $self = shift;
1286         my $name = $AUTOLOAD;
1287         return if $name =~ /::DESTROY$/;
1288         $name =~ s/.*:://o;
1289
1290         confess "Non-existant field '$AUTOLOAD'" if !$valid{$name};
1291         # this clever line of code creates a subroutine which takes over from autoload
1292         # from OO Perl - Conway
1293         *{$AUTOLOAD} = sub {@_ > 1 ? $_[0]->{$name} = $_[1] : $_[0]->{$name}} ;
1294         @_ ? $self->{$name} = shift : $self->{$name} ;
1295 }
1296
1297 1;
1298
1299 __END__