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 $residencetime
  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 $residencetime = 2*86400;       # keep deleted messages for this amount of time
  59
  60
  61 $badmsgfn = "$msgdir/badmsg.pl";    # list of TO address we wont store
  62 $forwardfn = "$msgdir/forward.pl";  # the forwarding table
  63 $swopfn = "$msgdir/swop.pl";        # the swopping table
  64 $importfn = "$msgdir/import";       # import directory
  65
  66
  67 %valid = (
  68                   fromnode => '5,From Node',
  69                   tonode => '5,To Node',
  70                   to => '0,To',
  71                   from => '0,From',
  72                   t => '0,Msg Time,cldatetime',
  73                   private => '5,Private,yesno',
  74                   subject => '0,Subject',
  75                   linesreq => '0,Lines per Gob',
  76                   rrreq => '5,Read Confirm,yesno',
  77                   origin => '0,Origin',
  78                   lines => '5,Data',
  79                   stream => '9,Stream No',
  80                   count => '5,Gob Linecnt',
  81                   file => '5,File?,yesno',
  82                   gotit => '5,Got it Nodes,parray',
  83                   lines => '5,Lines,parray',
  84                   'read' => '5,Times read',
  85                   size => '0,Size',
  86                   msgno => '0,Msgno',
  87                   keep => '0,Keep this?,yesno',
  88                   lastt => '5,Last processed,cldatetime',
  89                   waitt => '5,Wait until,cldatetime',
  90                   delete => '5,Awaiting Delete,yesno',
  91                   deletetime => '5,Deletion Time,cldatetime',
  92                  );
  93
  94 # allocate a new object
  95 # called fromnode, tonode, from, to, datetime, private?, subject, nolinesper
  96 sub alloc
  97 {
  98         my $pkg = shift;
  99         my $self = bless {}, $pkg;
 100         $self->{msgno} = shift;
 101         my $to = shift;
 102         #  $to =~ s/-\d+$//o;
 103         $self->{to} = ($to eq $main::mycall) ? $main::myalias : $to;
 104         my $from = shift;
 105         $from =~ s/-\d+$//o;
 106         $self->{from} = uc $from;
 107         $self->{t} = shift;
 108         $self->{private} = shift;
 109         $self->{subject} = shift;
 110         $self->{origin} = shift;
 111         $self->{'read'} = shift;
 112         $self->{rrreq} = shift;
 113         $self->{delete} = shift;
 114         $self->{deletetime} = shift;
 115         $self->{gotit} = [];
 116 #       $self->{lastt} = $main::systime;
 117         $self->{lines} = [];
 118         $self->{private} = 1 if $bulltopriv && DXUser->get_current($self->{to});
 119
 120         return $self;
 121 }
 122
 123
 124 sub process
 125 {
 126         my ($self, $line) = @_;
 127
 128         # this is periodic processing
 129         if (!$self || !$line) {
 130
 131                 if ($main::systime >= $lastq + $queueinterval) {
 132
 133                         # queue some message if the interval timer has gone off
 134                         queue_msg(0);
 135
 136                         # import any messages in the import directory
 137                         import_msgs();
 138
 139                         $lastq = $main::systime;
 140                 }
 141
 142                 # clean the message queue
 143                 clean_old() if $main::systime - $last_clean > 3600 ;
 144                 $last_clean = $main::systime;
 145                 return;
 146         }
 147
 148         my @f = split /\^/, $line;
 149         my ($pcno) = $f[0] =~ /^PC(\d\d)/; # just get the number
 150         my ($tonode, $fromnode) = @f[1, 2];
 151         my $stream = $f[3] if ($pcno >= 29 && $pcno <= 33) || $pcno == 42;
 152
 153  SWITCH: {
 154                 if ($pcno == 28) {              # incoming message
 155
 156                         # sort out various extant protocol errors that occur
 157                         my $origin = $f[13];
 158                         $origin = $self->call unless $origin && $origin gt ' ';
 159
 160                         # first look for any messages in the busy queue
 161                         # and cancel them this should both resolve timed out incoming messages
 162                         # and crossing of message between nodes, incoming messages have priority
 163
 164                         my $ref = get_busy($fromnode);
 165                         if ($ref) {
 166                                 my $otonode = $ref->{tonode} || "unknown";
 167                                 dbg("Busy, stopping msgno: $ref->{msgno} $fromnode->$otonode") if isdbg('msg');
 168                                 $ref->stop_msg($fromnode);
 169                         }
 170
 171                         my $t = cltounix($f[5], $f[6]);
 172                         $stream = next_transno($fromnode);
 173                         $ref = DXMsg->alloc($stream, uc $f[3], $f[4], $t, $f[7], $f[8], $origin, '0', $f[11]);
 174
 175                         # fill in various forwarding state variables
 176                         $ref->{fromnode} = $fromnode;
 177                         $ref->{tonode} = $tonode;
 178                         $ref->{rrreq} = $f[11];
 179                         $ref->{linesreq} = $f[10];
 180                         $ref->{stream} = $stream;
 181                         $ref->{count} = 0;      # no of lines between PC31s
 182                         dbg("new message from $f[4] to $f[3] '$f[8]' stream $fromnode/$stream\n") if isdbg('msg');
 183                         Log('msg', "Incoming message $f[4] to $f[3] '$f[8]' origin: $origin" );
 184                         set_fwq($fromnode, $stream, $ref); # store in work
 185                         set_busy($fromnode, $ref); # set interlock
 186                         $self->send(DXProt::pc30($fromnode, $tonode, $stream)); # send ack
 187                         $ref->{lastt} = $main::systime;
 188
 189                         # look to see whether this is a non private message sent to a known callsign
 190                         my $uref = DXUser->get_current($ref->{to});
 191                         if (is_callsign($ref->{to}) && !$ref->{private} && $uref && $uref->homenode) {
 192                                 $ref->{private} = 1;
 193                                 dbg("set bull to $ref->{to} to private") if isdbg('msg');
 194                                 Log('msg', "set bull to $ref->{to} to private");
 195                         }
 196                         last SWITCH;
 197                 }
 198
 199                 if ($pcno == 29) {              # incoming text
 200                         my $ref = get_fwq($fromnode, $stream);
 201                         if ($ref) {
 202                                 $f[4] =~ s/\%5E/^/g;
 203                                 if (@{$ref->{lines}}) {
 204                                         push @{$ref->{lines}}, $f[4];
 205                                 } else {
 206                                         # temporarily store any R: lines so that we end up with
 207                                         # only the first and last ones stored.
 208                                         if ($f[4] =~ m|^R:\d{6}/\d{4}|) {
 209                                                 push @{$ref->{tempr}}, $f[4];
 210                                         } else {
 211                                                 if (exists $ref->{tempr}) {
 212                                                         push @{$ref->{lines}}, shift @{$ref->{tempr}};
 213                                                         push @{$ref->{lines}}, pop @{$ref->{tempr}} if @{$ref->{tempr}};
 214                                                         delete $ref->{tempr};
 215                                                 }
 216                                                 push @{$ref->{lines}}, $f[4];
 217                                         }
 218                                 }
 219                                 $ref->{count}++;
 220                                 if ($ref->{count} >= $ref->{linesreq}) {
 221                                         $self->send(DXProt::pc31($fromnode, $tonode, $stream));
 222                                         dbg("stream $stream: $ref->{count} lines received\n") if isdbg('msg');
 223                                         $ref->{count} = 0;
 224                                 }
 225                                 $ref->{lastt} = $main::systime;
 226                         } else {
 227                                 dbg("PC29 from unknown stream $stream from $fromnode") if isdbg('msg');
 228                                 $self->send(DXProt::pc42($fromnode, $tonode, $stream)); # unknown stream
 229                         }
 230                         last SWITCH;
 231                 }
 232
 233                 if ($pcno == 30) {              # this is a incoming subject ack
 234                         my $ref = get_fwq($fromnode);   # note no stream at this stage
 235                         if ($ref) {
 236                                 del_fwq($fromnode);
 237                                 $ref->{stream} = $stream;
 238                                 $ref->{count} = 0;
 239                                 $ref->{linesreq} = 5;
 240                                 set_fwq($fromnode, $stream, $ref);      # new ref
 241                                 set_busy($fromnode, $ref); # interlock
 242                                 dbg("incoming subject ack stream $stream\n") if isdbg('msg');
 243                                 $ref->{lines} = [ $ref->read_msg_body ];
 244                                 $ref->send_tranche($self);
 245                                 $ref->{lastt} = $main::systime;
 246                         } else {
 247                                 dbg("PC30 from unknown stream $stream from $fromnode") if isdbg('msg');
 248                                 $self->send(DXProt::pc42($fromnode, $tonode, $stream)); # unknown stream
 249                         }
 250                         last SWITCH;
 251                 }
 252
 253                 if ($pcno == 31) {              # acknowledge a tranche of lines
 254                         my $ref = get_fwq($fromnode, $stream);
 255                         if ($ref) {
 256                                 dbg("tranche ack stream $stream\n") if isdbg('msg');
 257                                 $ref->send_tranche($self);
 258                                 $ref->{lastt} = $main::systime;
 259                         } else {
 260                                 dbg("PC31 from unknown stream $stream from $fromnode") if isdbg('msg');
 261                                 $self->send(DXProt::pc42($fromnode, $tonode, $stream)); # unknown stream
 262                         }
 263                         last SWITCH;
 264                 }
 265
 266                 if ($pcno == 32) {              # incoming EOM
 267                         dbg("stream $stream: EOM received\n") if isdbg('msg');
 268                         my $ref = get_fwq($fromnode, $stream);
 269                         if ($ref) {
 270                                 $self->send(DXProt::pc33($fromnode, $tonode, $stream)); # acknowledge it
 271
 272                                 # get the next msg no - note that this has NOTHING to do with the stream number in PC protocol
 273                                 # store the file or message
 274                                 # remove extraneous rubbish from the hash
 275                                 # remove it from the work in progress vector
 276                                 # stuff it on the msg queue
 277                                 if ($ref->{lines}) {
 278                                         if ($ref->{file}) {
 279                                                 $ref->store($ref->{lines});
 280                                         } else {
 281
 282                                                 # does an identical message already exist?
 283                                                 my $m;
 284                                                 for $m (@msg) {
 285                                                         if ($ref->{subject} eq $m->{subject} && $ref->{t} == $m->{t} && $ref->{from} eq $m->{from} && $ref->{to} eq $m->{to}) {
 286                                                                 $ref->stop_msg($fromnode);
 287                                                                 my $msgno = $m->{msgno};
 288                                                                 dbg("duplicate message from $ref->{from} -> $ref->{to} to msg: $msgno") if isdbg('msg');
 289                                                                 Log('msg', "duplicate message from $ref->{from} -> $ref->{to} to msg: $msgno");
 290                                                                 return;
 291                                                         }
 292                                                 }
 293
 294                                                 # swop addresses
 295                                                 $ref->swop_it($self->call);
 296
 297                                                 # look for 'bad' to addresses
 298                                                 if ($ref->dump_it($self->call)) {
 299                                                         $ref->stop_msg($fromnode);
 300                                                         dbg("'Bad' message $ref->{to}") if isdbg('msg');
 301                                                         Log('msg', "'Bad' message $ref->{to}");
 302                                                         return;
 303                                                 }
 304
 305                                                 # check the message for bad words
 306                                                 my @words;
 307                                                 for (@{$ref->{lines}}) {
 308                                                         push @words, BadWords::check($_);
 309                                                 }
 310                                                 push @words, BadWords::check($ref->{subject});
 311                                                 if (@words) {
 312                                                         dbg("message with badwords '@words' $ref->{from} -> $ref->{to} '$ref->{subject}' origin: $ref->{origin} via " . $self->call) if isdbg('msg');
 313                                                         Log('msg',"message with badwords '@words' $ref->{from} -> $ref->{to} origin: $ref->{origin} via " . $self->call);
 314                                                         Log('msg',"subject: $ref->{subject}");
 315                                                         for (@{$ref->{lines}}) {
 316                                                                 Log('msg', "line: $_");
 317                                                         }
 318                                                         $ref->stop_msg($fromnode);
 319                                                         return;
 320                                                 }
 321
 322                                                 $ref->{msgno} = next_transno("Msgno");
 323                                                 push @{$ref->{gotit}}, $fromnode; # mark this up as being received
 324                                                 $ref->store($ref->{lines});
 325                                                 add_dir($ref);
 326                                                 my $dxchan = DXChannel->get($ref->{to});
 327                                                 $dxchan->send($dxchan->msg('m9')) if $dxchan && $dxchan->is_user;
 328                                                 Log('msg', "Message $ref->{msgno} from $ref->{from} received from $fromnode for $ref->{to}");
 329                                         }
 330                                 }
 331                                 $ref->stop_msg($fromnode);
 332                         } else {
 333                                 dbg("PC32 from unknown stream $stream from $fromnode") if isdbg('msg');
 334                                 $self->send(DXProt::pc42($fromnode, $tonode, $stream)); # unknown stream
 335                         }
 336                         # queue_msg(0);
 337                         last SWITCH;
 338                 }
 339
 340                 if ($pcno == 33) {              # acknowledge the end of message
 341                         my $ref = get_fwq($fromnode, $stream);
 342                         if ($ref) {
 343                                 if ($ref->{private}) { # remove it if it private and gone off site#
 344                                         Log('msg', "Message $ref->{msgno} from $ref->{from} sent to $fromnode and deleted");
 345                                         $ref->mark_delete;
 346                                 } else {
 347                                         Log('msg', "Message $ref->{msgno} from $ref->{from} sent to $fromnode");
 348                                         push @{$ref->{gotit}}, $fromnode; # mark this up as being received
 349                                         $ref->store($ref->{lines});     # re- store the file
 350                                 }
 351                                 $ref->stop_msg($fromnode);
 352                         } else {
 353                                 dbg("PC33 from unknown stream $stream from $fromnode") if isdbg('msg');
 354                                 $self->send(DXProt::pc42($fromnode, $tonode, $stream)); # unknown stream
 355                         }
 356
 357                         # send next one if present
 358                         queue_msg(0);
 359                         last SWITCH;
 360                 }
 361
 362                 if ($pcno == 40) {              # this is a file request
 363                         $f[3] =~ s/\\/\//og; # change the slashes
 364                         $f[3] =~ s/\.//og;      # remove dots
 365                         $f[3] =~ s/^\///o;   # remove the leading /
 366                         $f[3] = lc $f[3];       # to lower case;
 367                         dbg("incoming file $f[3]\n") if isdbg('msg');
 368                         $f[3] = 'packclus/' . $f[3] unless $f[3] =~ /^packclus\//o;
 369
 370                         # create any directories
 371                         my @part = split /\//, $f[3];
 372                         my $part;
 373                         my $fn = "$main::root";
 374                         pop @part;                      # remove last part
 375                         foreach $part (@part) {
 376                                 $fn .= "/$part";
 377                                 next if -e $fn;
 378                                 last SWITCH if !mkdir $fn, 0777;
 379                                 dbg("created directory $fn\n") if isdbg('msg');
 380                         }
 381                         my $stream = next_transno($fromnode);
 382                         my $ref = DXMsg->alloc($stream, "$main::root/$f[3]", $self->call, time, !$f[4], $f[3], ' ', '0', '0');
 383
 384                         # forwarding variables
 385                         $ref->{fromnode} = $tonode;
 386                         $ref->{tonode} = $fromnode;
 387                         $ref->{linesreq} = $f[5];
 388                         $ref->{stream} = $stream;
 389                         $ref->{count} = 0;      # no of lines between PC31s
 390                         $ref->{file} = 1;
 391                         $ref->{lastt} = $main::systime;
 392                         set_fwq($fromnode, $stream, $ref); # store in work
 393                         $self->send(DXProt::pc30($fromnode, $tonode, $stream)); # send ack
 394
 395                         last SWITCH;
 396                 }
 397
 398                 if ($pcno == 42) {              # abort transfer
 399                         dbg("stream $stream: abort received\n") if isdbg('msg');
 400                         my $ref = get_fwq($fromnode, $stream);
 401                         if ($ref) {
 402                                 $ref->stop_msg($fromnode);
 403                                 $ref = undef;
 404                         }
 405                         last SWITCH;
 406                 }
 407
 408                 if ($pcno == 49) {      # global delete on subject
 409                         for (@msg) {
 410                                 if ($_->{from} eq $f[1] && $_->{subject} eq $f[2]) {
 411                                         $_->mark_delete;
 412                                         Log('msg', "Message $_->{msgno} from $_->{from} ($_->{subject}) fully deleted");
 413                                         DXChannel::broadcast_nodes($line, $self);
 414                                 }
 415                         }
 416                 }
 417         }
 418 }
 419
 420
 421 # store a message away on disc or whatever
 422 #
 423 # NOTE the second arg is a REFERENCE not a list
 424 sub store
 425 {
 426         my $ref = shift;
 427         my $lines = shift;
 428
 429         if ($ref->{file}) {                     # a file
 430                 dbg("To be stored in $ref->{to}\n") if isdbg('msg');
 431
 432                 my $fh = new IO::File "$ref->{to}", "w";
 433                 if (defined $fh) {
 434                         my $line;
 435                         foreach $line (@{$lines}) {
 436                                 print $fh "$line\n";
 437                         }
 438                         $fh->close;
 439                         dbg("file $ref->{to} stored\n") if isdbg('msg');
 440                         Log('msg', "file $ref->{to} from $ref->{from} stored" );
 441                 } else {
 442                         confess "can't open file $ref->{to} $!";
 443                 }
 444         } else {                                        # a normal message
 445
 446                 # attempt to open the message file
 447                 my $fn = filename($ref->{msgno});
 448
 449                 dbg("To be stored in $fn\n") if isdbg('msg');
 450
 451                 # now save the file, overwriting what's there, YES I KNOW OK! (I will change it if it's a problem)
 452                 my $fh = new IO::File "$fn", "w";
 453                 if (defined $fh) {
 454                         my $rr = $ref->{rrreq} ? '1' : '0';
 455                         my $priv = $ref->{private} ? '1': '0';
 456                         my $del = $ref->{delete} ? '1' : '0';
 457                         my $delt = $ref->{deletetime} || '0';
 458                         print $fh "=== $ref->{msgno}^$ref->{to}^$ref->{from}^$ref->{t}^$priv^$ref->{subject}^$ref->{origin}^$ref->{'read'}^$rr^$del^$delt\n";
 459                         print $fh "=== ", join('^', @{$ref->{gotit}}), "\n";
 460                         my $line;
 461                         $ref->{size} = 0;
 462                         foreach $line (@{$lines}) {
 463                                 $ref->{size} += (length $line) + 1;
 464                                 print $fh "$line\n";
 465                         }
 466                         $fh->close;
 467                         dbg("msg $ref->{msgno} stored\n") if isdbg('msg');
 468                         Log('msg', "msg $ref->{msgno} from $ref->{from} to $ref->{to} stored" );
 469                 } else {
 470                         confess "can't open msg file $fn $!";
 471                 }
 472         }
 473 }
 474
 475 # delete a message
 476 sub del_msg
 477 {
 478         my $self = shift;
 479         my $dxchan = shift;
 480
 481         if ($self->{tonode}) {
 482                 $self->{delete}++;
 483                 $self->{deletetime} = 0;
 484         } else {
 485                 my $call;
 486                 if ($dxchan) {
 487                         $call = " by " . $dxchan->call;
 488                 } else {
 489                         $call = '';
 490                 }
 491
 492                 # remove it from the active message list
 493                 @msg = grep { $_ != $self } @msg;
 494
 495                 # remove the file
 496                 unlink filename($self->{msgno});
 497         }
 498 }
 499
 500 sub mark_delete
 501 {
 502         my $ref = shift;
 503         my $t = shift;
 504         $t = $main::systime + $residencetime unless defined $t;
 505
 506         $ref->{delete}++;
 507         $ref->{deletetime} = $t;
 508         $ref->store( [$ref->read_msg_body] );
 509 }
 510
 511 # clean out old messages from the message queue
 512 sub clean_old
 513 {
 514         my $ref;
 515
 516         # mark old messages for deletion
 517         foreach $ref (@msg) {
 518                 if (ref($ref) && !$ref->{keep} && $ref->{t} < $main::systime - $maxage) {
 519
 520                         # this is for IMMEDIATE destruction
 521                         $ref->{delete}++;
 522                         $ref->{deletetime} = 0;
 523                 }
 524         }
 525 }
 526
 527 # read in a message header
 528 sub read_msg_header
 529 {
 530         my $fn = shift;
 531         my $file;
 532         my $line;
 533         my $ref;
 534         my @f;
 535         my $size;
 536
 537         $file = new IO::File "$fn";
 538         if (!$file) {
 539             dbg("Error reading $fn $!");
 540             Log('err', "Error reading $fn $!");
 541                 return undef;
 542         }
 543         $size = -s $fn;
 544         $line = <$file>;                        # first line
 545         if ($size == 0 || !$line) {
 546             dbg("Empty $fn $!");
 547             Log('err', "Empty $fn $!");
 548                 return undef;
 549         }
 550         chomp $line;
 551         $size -= length $line;
 552         if (! $line =~ /^===/o) {
 553                 dbg("corrupt first line in $fn ($line)");
 554                 Log('err', "corrupt first line in $fn ($line)");
 555                 return undef;
 556         }
 557         $line =~ s/^=== //o;
 558         @f = split /\^/, $line;
 559         $ref = DXMsg->alloc(@f);
 560
 561         $line = <$file>;                        # second line
 562         chomp $line;
 563         $size -= length $line;
 564         if (! $line =~ /^===/o) {
 565             dbg("corrupt second line in $fn ($line)");
 566             Log('err', "corrupt second line in $fn ($line)");
 567                 return undef;
 568         }
 569         $line =~ s/^=== //o;
 570         $ref->{gotit} = [];
 571         @f = split /\^/, $line;
 572         push @{$ref->{gotit}}, @f;
 573         $ref->{size} = $size;
 574
 575         close($file);
 576
 577         return $ref;
 578 }
 579
 580 # read in a message header
 581 sub read_msg_body
 582 {
 583         my $self = shift;
 584         my $msgno = $self->{msgno};
 585         my $file;
 586         my $line;
 587         my $fn = filename($msgno);
 588         my @out;
 589
 590         $file = new IO::File;
 591         if (!open($file, $fn)) {
 592                 dbg("Error reading $fn $!");
 593                 Log('err' ,"Error reading $fn $!");
 594                 return ();
 595         }
 596         @out = map {chomp; $_} <$file>;
 597         close($file);
 598
 599         shift @out if $out[0] =~ /^=== /;
 600         shift @out if $out[0] =~ /^=== /;
 601         return @out;
 602 }
 603
 604 # send a tranche of lines to the other end
 605 sub send_tranche
 606 {
 607         my ($self, $dxchan) = @_;
 608         my @out;
 609         my $to = $self->{tonode};
 610         my $from = $self->{fromnode};
 611         my $stream = $self->{stream};
 612         my $lines = $self->{lines};
 613         my ($c, $i);
 614
 615         for ($i = 0, $c = $self->{count}; $i < $self->{linesreq} && $c < @$lines; $i++, $c++) {
 616                 push @out, DXProt::pc29($to, $from, $stream, $lines->[$c]);
 617     }
 618     $self->{count} = $c;
 619
 620     push @out, DXProt::pc32($to, $from, $stream) if $i < $self->{linesreq};
 621         $dxchan->send(@out);
 622 }
 623
 624
 625 # find a message to send out and start the ball rolling
 626 sub queue_msg
 627 {
 628         my $sort = shift;
 629         my $ref;
 630         my $clref;
 631
 632         # bat down the message list looking for one that needs to go off site and whose
 633         # nearest node is not busy.
 634
 635         dbg("queue msg ($sort)\n") if isdbg('msg');
 636         my @nodelist = DXChannel::get_all_nodes;
 637         foreach $ref (@msg) {
 638
 639                 # ignore 'delayed' messages until their waiting time has expired
 640                 if (exists $ref->{waitt}) {
 641                         next if $ref->{waitt} > $main::systime;
 642                         delete $ref->{waitt};
 643                 }
 644
 645                 # any time outs?
 646                 if (exists $ref->{lastt} && $main::systime >= $ref->{lastt} + $timeout) {
 647                         my $node = $ref->{tonode};
 648                         dbg("Timeout, stopping msgno: $ref->{msgno} -> $node") if isdbg('msg');
 649                         Log('msg', "Timeout, stopping msgno: $ref->{msgno} -> $node");
 650                         $ref->stop_msg($node);
 651
 652                         # delay any outgoing messages that fail
 653                         $ref->{waitt} = $main::systime + $waittime + rand(120) if $node ne $main::mycall;
 654                         delete $ref->{lastt};
 655                         next;
 656                 }
 657
 658                 # is it being sent anywhere currently?
 659                 next if $ref->{tonode};           # ignore it if it already being processed
 660
 661                 # is it awaiting deletion?
 662                 if ($ref->{delete} && $main::systime > $ref->{deletetime}) {
 663                         $ref->del_msg;
 664                         next;
 665                 }
 666                 next if $ref->{delete};
 667
 668                 # firstly, is it private and unread? if so can I find the recipient
 669                 # in my cluster node list offsite?
 670
 671                 # deal with routed private messages
 672                 my $dxchan;
 673                 if ($ref->{private}) {
 674                         next if $ref->{'read'};           # if it is read, it is stuck here
 675                         $clref = Route::get($ref->{to});
 676                         if ($clref) {
 677                                 $dxchan = $clref->dxchan;
 678                                 if ($dxchan) {
 679                                         if ($dxchan->is_node) {
 680                                                 next if $clref->call eq $main::mycall;  # i.e. it lives here
 681                                                 $ref->start_msg($dxchan) if !get_busy($dxchan->call)  && $dxchan->state eq 'normal';
 682                                         }
 683                                 } else {
 684                                         dbg("Route: No dxchan for $ref->{to} " . ref($clref) ) if isdbg('msg');
 685                                 }
 686                         }
 687                 } else {
 688
 689                         # otherwise we are dealing with a bulletin or forwarded private message
 690                         # compare the gotit list with
 691                         # the nodelist up above, if there are sites that haven't got it yet
 692                         # then start sending it - what happens when we get loops is anyone's
 693                         # guess, use (to, from, time, subject) tuple?
 694                         foreach $dxchan (@nodelist) {
 695                                 my $call = $dxchan->call;
 696                                 next unless $call;
 697                                 next if $call eq $main::mycall;
 698                                 next if ref $ref->{gotit} && grep $_ eq $call, @{$ref->{gotit}};
 699                                 next unless $ref->forward_it($call);           # check the forwarding file
 700                                 next if $ref->{tonode};           # ignore it if it already being processed
 701
 702                                 # if we are here we have a node that doesn't have this message
 703                                 if (!get_busy($call)  && $dxchan->state eq 'normal') {
 704                                         $ref->start_msg($dxchan);
 705                                         last;
 706                                 }
 707                         }
 708                 }
 709
 710                 # if all the available nodes are busy then stop
 711                 last if @nodelist == scalar grep { get_busy($_->call) } @nodelist;
 712         }
 713 }
 714
 715 # is there a message for me?
 716 sub for_me
 717 {
 718         my $call = uc shift;
 719         my $ref;
 720
 721         foreach $ref (@msg) {
 722                 # is it for me, private and unread?
 723                 if ($ref->{to} eq $call && $ref->{private}) {
 724                         return 1 if !$ref->{'read'};
 725                 }
 726         }
 727         return 0;
 728 }
 729
 730 # start the message off on its travels with a PC28
 731 sub start_msg
 732 {
 733         my ($self, $dxchan) = @_;
 734
 735         confess("trying to start started msg $self->{msgno} nodes: $self->{fromnode} -> $self->{tonode}") if $self->{tonode};
 736         dbg("start msg $self->{msgno}\n") if isdbg('msg');
 737         $self->{linesreq} = 10;
 738         $self->{count} = 0;
 739         $self->{tonode} = $dxchan->call;
 740         $self->{fromnode} = $main::mycall;
 741         set_busy($self->{tonode}, $self);
 742         set_fwq($self->{tonode}, undef, $self);
 743         $self->{lastt} = $main::systime;
 744         my ($fromnode, $origin);
 745         $fromnode = $self->{fromnode};
 746         $origin = $self->{origin};
 747         $dxchan->send(DXProt::pc28($self->{tonode}, $fromnode, $self->{to}, $self->{from}, $self->{t}, $self->{private}, $self->{subject}, $origin, $self->{rrreq}));
 748 }
 749
 750 # get the ref of a busy node
 751 sub get_busy
 752 {
 753         my $call = shift;
 754         return $busy{$call};
 755 }
 756
 757 sub set_busy
 758 {
 759         my $call = shift;
 760         return $busy{$call} = shift;
 761 }
 762
 763 sub del_busy
 764 {
 765         my $call = shift;
 766         return delete $busy{$call};
 767 }
 768
 769 # get the whole busy queue
 770 sub get_all_busy
 771 {
 772         return keys %busy;
 773 }
 774
 775 # get a forwarding queue entry
 776 sub get_fwq
 777 {
 778         my $call = shift;
 779         my $stream = shift || '0';
 780         return $work{"$call,$stream"};
 781 }
 782
 783 # delete a forwarding queue entry
 784 sub del_fwq
 785 {
 786         my $call = shift;
 787         my $stream = shift || '0';
 788         return delete $work{"$call,$stream"};
 789 }
 790
 791 # set a fwq entry
 792 sub set_fwq
 793 {
 794         my $call = shift;
 795         my $stream = shift || '0';
 796         return $work{"$call,$stream"} = shift;
 797 }
 798
 799 # get the whole forwarding queue
 800 sub get_all_fwq
 801 {
 802         return keys %work;
 803 }
 804
 805 # stop a message from continuing, clean it out, unlock interlocks etc
 806 sub stop_msg
 807 {
 808         my $self = shift;
 809         my $node = shift;
 810         my $stream = $self->{stream};
 811
 812
 813         dbg("stop msg $self->{msgno} -> node $node\n") if isdbg('msg');
 814         del_fwq($node, $stream);
 815         $self->workclean;
 816         del_busy($node);
 817 }
 818
 819 sub workclean
 820 {
 821         my $ref = shift;
 822         delete $ref->{lines};
 823         delete $ref->{linesreq};
 824         delete $ref->{tonode};
 825         delete $ref->{fromnode};
 826         delete $ref->{stream};
 827         delete $ref->{file};
 828         delete $ref->{count};
 829         delete $ref->{tempr};
 830         delete $ref->{lastt};
 831         delete $ref->{waitt};
 832 }
 833
 834 # get a new transaction number from the file specified
 835 sub next_transno
 836 {
 837         my $name = shift;
 838         $name =~ s/\W//og;                      # remove non-word characters
 839         my $fn = "$msgdir/$name";
 840         my $msgno;
 841
 842         my $fh = new IO::File;
 843         if (sysopen($fh, $fn, O_RDWR|O_CREAT, 0666)) {
 844                 $fh->autoflush(1);
 845                 $msgno = $fh->getline || '0';
 846                 chomp $msgno;
 847                 $msgno++;
 848                 seek $fh, 0, 0;
 849                 $fh->print("$msgno\n");
 850                 dbg("msgno $msgno allocated for $name\n") if isdbg('msg');
 851                 $fh->close;
 852         } else {
 853                 confess "can't open $fn $!";
 854         }
 855         return $msgno;
 856 }
 857
 858 # initialise the message 'system', read in all the message headers
 859 sub init
 860 {
 861         my $dir = new IO::File;
 862         my @dir;
 863         my $ref;
 864
 865         # load various control files
 866         dbg("load badmsg: " . (load_badmsg() or "Ok"));
 867         dbg("load forward: " . (load_forward() or "Ok"));
 868         dbg("load swop: " . (load_swop() or "Ok"));
 869
 870         # read in the directory
 871         opendir($dir, $msgdir) or confess "can't open $msgdir $!";
 872         @dir = readdir($dir);
 873         closedir($dir);
 874
 875         @msg = ();
 876         for (sort @dir) {
 877                 next unless /^m\d\d\d\d\d\d$/;
 878
 879                 $ref = read_msg_header("$msgdir/$_");
 880                 unless ($ref) {
 881                         dbg("Deleting $_");
 882                         Log('err', "Deleting $_");
 883                         unlink "$msgdir/$_";
 884                         next;
 885                 }
 886
 887                 # delete any messages to 'badmsg.pl' places
 888                 if ($ref->dump_it('')) {
 889                         dbg("'Bad' TO address $ref->{to}") if isdbg('msg');
 890                         Log('msg', "'Bad' TO address $ref->{to}");
 891                         $ref->del_msg;
 892                         next;
 893                 }
 894
 895                 # add the message to the available queue
 896                 add_dir($ref);
 897         }
 898 }
 899
 900 # add the message to the directory listing
 901 sub add_dir
 902 {
 903         my $ref = shift;
 904         confess "tried to add a non-ref to the msg directory" if !ref $ref;
 905         push @msg, $ref;
 906 }
 907
 908 # return all the current messages
 909 sub get_all
 910 {
 911         return @msg;
 912 }
 913
 914 # get a particular message
 915 sub get
 916 {
 917         my $msgno = shift;
 918         for (@msg) {
 919                 return $_ if $_->{msgno} == $msgno;
 920                 last if $_->{msgno} > $msgno;
 921         }
 922         return undef;
 923 }
 924
 925 # return the official filename for a message no
 926 sub filename
 927 {
 928         return sprintf "$msgdir/m%06d", shift;
 929 }
 930
 931 #
 932 # return a list of valid elements
 933 #
 934
 935 sub fields
 936 {
 937         return keys(%valid);
 938 }
 939
 940 #
 941 # return a prompt for a field
 942 #
 943
 944 sub field_prompt
 945 {
 946         my ($self, $ele) = @_;
 947         return $valid{$ele};
 948 }
 949
 950 #
 951 # send a message state machine
 952 sub do_send_stuff
 953 {
 954         my $self = shift;
 955         my $line = shift;
 956         my @out;
 957
 958         if ($self->state eq 'send1') {
 959                 #  $DB::single = 1;
 960                 confess "local var gone missing" if !ref $self->{loc};
 961                 my $loc = $self->{loc};
 962                 if (my @ans = BadWords::check($line)) {
 963                         $self->{badcount} += @ans;
 964                         Log('msg', $self->call . " used badwords: @ans to @{$loc->{to}} in msg");
 965                         return ($self->msg('e17', @ans), $self->msg('m1'));
 966                 }
 967                 $loc->{subject} = $line;
 968                 $loc->{lines} = [];
 969                 $self->state('sendbody');
 970                 #push @out, $self->msg('sendbody');
 971                 push @out, $self->msg('m8');
 972         } elsif ($self->state eq 'sendbody') {
 973                 confess "local var gone missing" if !ref $self->{loc};
 974                 my $loc = $self->{loc};
 975                 if ($line eq "\032" || $line eq '%1A' || uc $line eq "/EX") {
 976                         my $to;
 977
 978                         foreach $to (@{$loc->{to}}) {
 979                                 my $ref;
 980                                 my $systime = $main::systime;
 981                                 my $mycall = $main::mycall;
 982                                 $ref = DXMsg->alloc(DXMsg::next_transno('Msgno'),
 983                                                                         uc $to,
 984                                                                         exists $loc->{from} ? $loc->{from} : $self->call,
 985                                                                         $systime,
 986                                                                         $loc->{private},
 987                                                                         $loc->{subject},
 988                                                                         exists $loc->{origin} ? $loc->{origin} : $mycall,
 989                                                                         '0',
 990                                                                         $loc->{rrreq});
 991                                 $ref->swop_it($self->call);
 992                                 $ref->store($loc->{lines});
 993                                 $ref->add_dir();
 994                                 push @out, $self->msg('m11', $ref->{msgno}, $to);
 995                                 #push @out, "msgno $ref->{msgno} sent to $to";
 996                                 my $dxchan = DXChannel->get(uc $to);
 997                                 if ($dxchan) {
 998                                         if ($dxchan->is_user()) {
 999                                                 $dxchan->send($dxchan->msg('m9'));
1000                                         }
1001                                 }
1002                         }
1003
1004                         delete $loc->{lines};
1005                         delete $loc->{to};
1006                         delete $self->{loc};
1007                         $self->func(undef);
1008
1009                         $self->state('prompt');
1010                 } elsif ($line eq "\031" || uc $line eq "/ABORT" || uc $line eq "/QUIT") {
1011                         #push @out, $self->msg('sendabort');
1012                         push @out, $self->msg('m10');
1013                         delete $loc->{lines};
1014                         delete $loc->{to};
1015                         delete $self->{loc};
1016                         $self->func(undef);
1017                         $self->state('prompt');
1018                 } else {
1019                         if (my @ans = BadWords::check($line)) {
1020                                 $self->{badcount} += @ans;
1021                                 Log('msg', $self->call . " used badwords: @ans to @{$loc->{to}} subject: '$loc->{subject}' in msg");
1022                                 Log('msg', "line: $line");
1023                                 return ($self->msg('e17', @ans));
1024                         }
1025
1026                         # i.e. it ain't and end or abort, therefore store the line
1027                         push @{$loc->{lines}}, length($line) > 0 ? $line : " ";
1028                 }
1029         }
1030         return @out;
1031 }
1032
1033 # return the standard directory line for this ref
1034 sub dir
1035 {
1036         my $ref = shift;
1037         my $flag = $ref->read ? '-' : ' ';
1038         $flag = 'D' if $ref->delete;
1039         return sprintf "%6d%s%s%5d %8.8s %8.8s %-6.6s %5.5s %-30.30s",
1040                 $ref->msgno, $flag, $ref->private ? 'p' : ' ', $ref->size,
1041                         $ref->to, $ref->from, cldate($ref->t), ztime($ref->t), $ref->subject;
1042 }
1043
1044 # load the forward table
1045 sub load_forward
1046 {
1047         my @out;
1048         my $s = readfilestr($forwardfn);
1049         if ($s) {
1050                 eval $s;
1051                 push @out, $@ if $@;
1052         }
1053         return @out;
1054 }
1055
1056 # load the bad message table
1057 sub load_badmsg
1058 {
1059         my @out;
1060         my $s = readfilestr($badmsgfn);
1061         if ($s) {
1062                 eval $s;
1063                 push @out, $@ if $@;
1064         }
1065         return @out;
1066 }
1067
1068 # load the swop message table
1069 sub load_swop
1070 {
1071         my @out;
1072         my $s = readfilestr($swopfn);
1073         if ($s) {
1074                 eval $s;
1075                 push @out, $@ if $@;
1076         }
1077         return @out;
1078 }
1079
1080 #
1081 # forward that message or not according to the forwarding table
1082 # returns 1 for forward, 0 - to ignore
1083 #
1084
1085 sub forward_it
1086 {
1087         my $ref = shift;
1088         my $call = shift;
1089         my $i;
1090
1091         for ($i = 0; $i < @forward; $i += 5) {
1092                 my ($sort, $field, $pattern, $action, $bbs) = @forward[$i..($i+4)];
1093                 my $tested;
1094
1095                 # are we interested?
1096                 next if $ref->{private} && $sort ne 'P';
1097                 next if !$ref->{private} && $sort ne 'B';
1098
1099                 # select field
1100                 $tested = $ref->{to} if $field eq 'T';
1101                 $tested = $ref->{from} if $field eq 'F';
1102                 $tested = $ref->{origin} if $field eq 'O';
1103                 $tested = $ref->{subject} if $field eq 'S';
1104
1105                 if (!$pattern || $tested =~ m{$pattern}i) {
1106                         return 0 if $action eq 'I';
1107                         return 1 if !$bbs || grep $_ eq $call, @{$bbs};
1108                 }
1109         }
1110         return 0;
1111 }
1112
1113 sub dump_it
1114 {
1115         my $ref = shift;
1116         my $call = shift;
1117         my $i;
1118
1119         for ($i = 0; $i < @badmsg; $i += 3) {
1120                 my ($sort, $field, $pattern) = @badmsg[$i..($i+2)];
1121                 my $tested;
1122
1123                 # are we interested?
1124                 next if $ref->{private} && $sort ne 'P';
1125                 next if !$ref->{private} && $sort ne 'B';
1126
1127                 # select field
1128                 $tested = $ref->{to} if $field eq 'T';
1129                 $tested = $ref->{from} if $field eq 'F';
1130                 $tested = $ref->{origin} if $field eq 'O';
1131                 $tested = $ref->{subject} if $field eq 'S';
1132                 $tested = $call if $field eq 'I';
1133
1134                 if (!$pattern || $tested =~ m{$pattern}i) {
1135                         return 1;
1136                 }
1137         }
1138         return 0;
1139 }
1140
1141 sub swop_it
1142 {
1143         my $ref = shift;
1144         my $call = shift;
1145         my $i;
1146         my $count = 0;
1147
1148         for ($i = 0; $i < @swop; $i += 5) {
1149                 my ($sort, $field, $pattern, $tfield, $topattern) = @swop[$i..($i+4)];
1150                 my $tested;
1151                 my $swop;
1152                 my $old;
1153
1154                 # are we interested?
1155                 next if $ref->{private} && $sort ne 'P';
1156                 next if !$ref->{private} && $sort ne 'B';
1157
1158                 # select field
1159                 $tested = $ref->{to} if $field eq 'T';
1160                 $tested = $ref->{from} if $field eq 'F';
1161                 $tested = $ref->{origin} if $field eq 'O';
1162                 $tested = $ref->{subject} if $field eq 'S';
1163
1164                 # select swop field
1165                 $old = $swop = $ref->{to} if $tfield eq 'T';
1166                 $old = $swop = $ref->{from} if $tfield eq 'F';
1167                 $old = $swop = $ref->{origin} if $tfield eq 'O';
1168                 $old = $swop = $ref->{subject} if $tfield eq 'S';
1169
1170                 if ($tested =~ m{$pattern}i) {
1171                         if ($tested eq $swop) {
1172                                 $swop =~ s{$pattern}{$topattern}i;
1173                         } else {
1174                                 $swop = $topattern;
1175                         }
1176                         Log('msg', "Msg $ref->{msgno}: $tfield $old -> $swop");
1177                         Log('dbg', "Msg $ref->{msgno}: $tfield $old -> $swop");
1178                         $ref->{to} = $swop if $tfield eq 'T';
1179                         $ref->{from} = $swop if $tfield eq 'F';
1180                         $ref->{origin} = $swop if $tfield eq 'O';
1181                         $ref->{subject} = $swop if $tfield eq 'S';
1182                         ++$count;
1183                 }
1184         }
1185         return $count;
1186 }
1187
1188 # import any msgs in the import directory
1189 # the messages are in BBS format (but may have cluster extentions
1190 # so SB UK < GB7TLH is legal
1191 sub import_msgs
1192 {
1193         # are there any to do in this directory?
1194         return unless -d $importfn;
1195         unless (opendir(DIR, $importfn)) {
1196                 dbg("can\'t open $importfn $!") if isdbg('msg');
1197                 Log('msg', "can\'t open $importfn $!");
1198                 return;
1199         }
1200
1201         my @names = readdir(DIR);
1202         closedir(DIR);
1203         my $name;
1204         foreach $name (@names) {
1205                 next if $name =~ /^\./;
1206                 my $splitit = $name =~ /^split/;
1207                 my $fn = "$importfn/$name";
1208                 next unless -f $fn;
1209                 unless (open(MSG, $fn)) {
1210                         dbg("can\'t open import file $fn $!") if isdbg('msg');
1211                         Log('msg', "can\'t open import file $fn $!");
1212                         unlink($fn);
1213                         next;
1214                 }
1215                 my @msg = map { chomp; $_ } <MSG>;
1216                 close(MSG);
1217                 unlink($fn);
1218                 my @out = import_one($main::me, \@msg, $splitit);
1219                 Log('msg', @out);
1220         }
1221         queue_msg(0);
1222 }
1223
1224 # import one message as a list in bbs (as extended) mode
1225 # takes a reference to an array containing the whole message
1226 sub import_one
1227 {
1228         my $dxchan = shift;
1229         my $ref = shift;
1230         my $splitit = shift;
1231         my $private = '1';
1232         my $rr = '0';
1233         my $notincalls = 1;
1234         my $from = $dxchan->call;
1235         my $origin = $main::mycall;
1236         my @to;
1237         my @out;
1238
1239         # first line;
1240         my $line = shift @$ref;
1241         my @f = split /\b/, $line;
1242         @f = map {s/\s+//g; length $_ ? $_ : ()} @f;
1243
1244         unless (@f && $f[0] =~ /^(:?S|SP|SB|SEND)$/ ) {
1245                 my $m = "invalid first line in import '$line'";
1246                 dbg($m) if isdbg('msg');
1247                 return (1, $m);
1248         }
1249         while (@f) {
1250                 my $f = uc shift @f;
1251                 next if $f eq 'SEND';
1252
1253                 # private / noprivate / rr
1254                 if ($notincalls && ($f eq 'B' || $f eq 'SB' || $f =~ /^NOP/oi)) {
1255                         $private = '0';
1256                 } elsif ($notincalls && ($f eq 'P' || $f eq 'SP' || $f =~ /^PRI/oi)) {
1257                         ;
1258                 } elsif ($notincalls && ($f eq 'RR')) {
1259                         $rr = '1';
1260                 } elsif (($f =~ /^[\@\.\#\$]$/ || $f eq '.#') && @f) {       # this is bbs syntax, for AT
1261                         shift @f;
1262                 } elsif ($f eq '<' && @f) {     # this is bbs syntax  for from call
1263                         $from = uc shift @f;
1264                 } elsif ($f =~ /^\$/) {     # this is bbs syntax  for a bid
1265                         next;
1266                 } elsif ($f =~ /^<(\S+)/) {     # this is bbs syntax  for from call
1267                         $from = $1;
1268                 } elsif ($f =~ /^\$\S+/) {     # this is bbs syntax for bid
1269                         ;
1270                 } else {
1271
1272                         # callsign ?
1273                         $notincalls = 0;
1274
1275                         # is this callsign a distro?
1276                         my $fn = "$msgdir/distro/$f.pl";
1277                         if (-e $fn) {
1278                                 my $fh = new IO::File $fn;
1279                                 if ($fh) {
1280                                         local $/ = undef;
1281                                         my $s = <$fh>;
1282                                         $fh->close;
1283                                         my @call;
1284                                         @call = eval $s;
1285                                         return (1, "Error in Distro $f.pl:", $@) if $@;
1286                                         if (@call > 0) {
1287                                                 push @f, @call;
1288                                                 next;
1289                                         }
1290                                 }
1291                         }
1292
1293                         if (grep $_ eq $f, @DXMsg::badmsg) {
1294                                 push @out, $dxchan->msg('m3', $f);
1295                         } else {
1296                                 push @to, $f;
1297                         }
1298                 }
1299         }
1300
1301         # subject is the next line
1302         my $subject = shift @$ref;
1303
1304         # strip off trailing lines
1305         pop @$ref while (@$ref && $$ref[-1] =~ /^\s*$/);
1306
1307         # strip off /EX or /ABORT
1308         return ("aborted") if @$ref && $$ref[-1] =~ m{^/ABORT$}i;
1309         pop @$ref if (@$ref && $$ref[-1] =~ m{^/EX$}i);
1310
1311         # sort out any splitting that needs to be done
1312         my @chunk;
1313         if ($splitit) {
1314                 my $lth = 0;
1315                 my $lines = [];
1316                 for (@$ref) {
1317                         if ($lth >= $maxchunk || ($lth > $minchunk && /^\s*$/)) {
1318                                 push @chunk, $lines;
1319                                 $lines = [];
1320                                 $lth = 0;
1321                         }
1322                         push @$lines, $_;
1323                         $lth += length;
1324                 }
1325                 push @chunk, $lines if @$lines;
1326         } else {
1327                 push @chunk, $ref;
1328         }
1329
1330     # write all the messages away
1331         my $i;
1332         for ( $i = 0;  $i < @chunk; $i++) {
1333                 my $chunk = $chunk[$i];
1334                 my $ch_subject;
1335                 if (@chunk > 1) {
1336                         my $num = " [" . ($i+1) . "/" . scalar @chunk . "]";
1337                         $ch_subject = substr($subject, 0, 27 - length $num) .  $num;
1338                 } else {
1339                         $ch_subject = $subject;
1340                 }
1341                 my $to;
1342                 foreach $to (@to) {
1343                         my $systime = $main::systime;
1344                         my $mycall = $main::mycall;
1345                         my $mref = DXMsg->alloc(DXMsg::next_transno('Msgno'),
1346                                                                         $to,
1347                                                                         $from,
1348                                                                         $systime,
1349                                                                         $private,
1350                                                                         $ch_subject,
1351                                                                         $origin,
1352                                                                         '0',
1353                                                                         $rr);
1354                         $mref->swop_it($main::mycall);
1355                         $mref->store($chunk);
1356                         $mref->add_dir();
1357                         push @out, $dxchan->msg('m11', $mref->{msgno}, $to);
1358                         #push @out, "msgno $ref->{msgno} sent to $to";
1359                         my $todxchan = DXChannel->get(uc $to);
1360                         if ($todxchan) {
1361                                 if ($todxchan->is_user()) {
1362                                         $todxchan->send($todxchan->msg('m9'));
1363                                 }
1364                         }
1365                 }
1366         }
1367         return @out;
1368 }
1369
1370 no strict;
1371 sub AUTOLOAD
1372 {
1373         my $self = shift;
1374         my $name = $AUTOLOAD;
1375         return if $name =~ /::DESTROY$/;
1376         $name =~ s/.*:://o;
1377
1378         confess "Non-existant field '$AUTOLOAD'" if !$valid{$name};
1379         # this clever line of code creates a subroutine which takes over from autoload
1380         # from OO Perl - Conway
1381         *{$AUTOLOAD} = sub {@_ > 1 ? $_[0]->{$name} = $_[1] : $_[0]->{$name}} ;
1382         @_ ? $self->{$name} = shift : $self->{$name} ;
1383 }
1384
1385 1;
1386
1387 __END__