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 eval {
  30         require Net::SMTP;
  31 };
  32
  33 use strict;
  34
  35 use vars qw($VERSION $BRANCH);
  36 $VERSION = sprintf( "%d.%03d", q$Revision$ =~ /(\d+)\.(\d+)/ );
  37 $BRANCH = sprintf( "%d.%03d", q$Revision$ =~ /\d+\.\d+\.(\d+)\.(\d+)/  || (0,0));
  38 $main::build += $VERSION;
  39 $main::branch += $BRANCH;
  40
  41 use vars qw(%work @msg $msgdir %valid %busy $maxage $last_clean $residencetime
  42                         @badmsg @swop $swopfn $badmsgfn $forwardfn @forward $timeout $waittime
  43                         $email_server $email_prog $email_from
  44                     $queueinterval $lastq $importfn $minchunk $maxchunk $bulltopriv);
  45
  46 %work = ();                                             # outstanding jobs
  47 @msg = ();                                              # messages we have
  48 %busy = ();                                             # station interlocks
  49 $msgdir = "$main::root/msg";    # directory contain the msgs
  50 $maxage = 30 * 86400;                   # the maximum age that a message shall live for if not marked
  51 $last_clean = 0;                                # last time we did a clean
  52 @forward = ();                  # msg forward table
  53 @badmsg = ();                                   # bad message table
  54 @swop = ();                                             # swop table
  55 $timeout = 30*60;               # forwarding timeout
  56 $waittime = 30*60;              # time an aborted outgoing message waits before trying again
  57 $queueinterval = 1*60;          # run the queue every 1 minute
  58 $lastq = 0;
  59
  60 $minchunk = 4800;               # minimum chunk size for a split message
  61 $maxchunk = 6000;               # maximum chunk size
  62 $bulltopriv = 1;                                # convert msgs with callsigns to private if they are bulls
  63 $residencetime = 2*86400;       # keep deleted messages for this amount of time
  64 $email_server = undef;                  # DNS address of smtp server if 'smtp'
  65 $email_prog = undef;                    # program name + args for sending mail
  66 $email_from = undef;                    # the from address the email will appear to be from
  67
  68 $badmsgfn = "$msgdir/badmsg.pl";    # list of TO address we wont store
  69 $forwardfn = "$msgdir/forward.pl";  # the forwarding table
  70 $swopfn = "$msgdir/swop.pl";        # the swopping table
  71 $importfn = "$msgdir/import";       # import directory
  72
  73
  74 %valid = (
  75                   fromnode => '5,From Node',
  76                   tonode => '5,To Node',
  77                   to => '0,To',
  78                   from => '0,From',
  79                   t => '0,Msg Time,cldatetime',
  80                   private => '5,Private,yesno',
  81                   subject => '0,Subject',
  82                   linesreq => '0,Lines per Gob',
  83                   rrreq => '5,Read Confirm,yesno',
  84                   origin => '0,Origin',
  85                   lines => '5,Data',
  86                   stream => '9,Stream No',
  87                   count => '5,Gob Linecnt',
  88                   file => '5,File?,yesno',
  89                   gotit => '5,Got it Nodes,parray',
  90                   lines => '5,Lines,parray',
  91                   'read' => '5,Times read',
  92                   size => '0,Size',
  93                   msgno => '0,Msgno',
  94                   keep => '0,Keep this?,yesno',
  95                   lastt => '5,Last processed,cldatetime',
  96                   waitt => '5,Wait until,cldatetime',
  97                   delete => '5,Awaiting Delete,yesno',
  98                   deletetime => '5,Deletion Time,cldatetime',
  99                  );
 100
 101 # fix up the default sendmail if available
 102 for (qw(/usr/sbin/sendmail /usr/lib/sendmail /usr/sbin/sendmail)) {
 103         if (-e $_) {
 104                 $email_prog = $_;
 105                 last;
 106         }
 107 }
 108
 109 # allocate a new object
 110 # called fromnode, tonode, from, to, datetime, private?, subject, nolinesper
 111 sub alloc
 112 {
 113         my $pkg = shift;
 114         my $self = bless {}, $pkg;
 115         $self->{msgno} = shift;
 116         my $to = shift;
 117         #  $to =~ s/-\d+$//o;
 118         $self->{to} = ($to eq $main::mycall) ? $main::myalias : $to;
 119         my $from = shift;
 120         $self->{from} = uc $from;
 121         $self->{t} = shift;
 122         $self->{private} = shift;
 123         $self->{subject} = shift;
 124         $self->{origin} = shift;
 125         $self->{'read'} = shift;
 126         $self->{rrreq} = shift;
 127         $self->{delete} = shift;
 128         $self->{deletetime} = shift || $self->{delete} ? 0 : ($self->{t} + $maxage);
 129         $self->{gotit} = [];
 130 #       $self->{lastt} = $main::systime;
 131         $self->{lines} = [];
 132         $self->{private} = 1 if $bulltopriv && DXUser->get_current($self->{to});
 133
 134         return $self;
 135 }
 136
 137
 138 sub process
 139 {
 140         my ($self, $line) = @_;
 141
 142         # this is periodic processing
 143         if (!$self || !$line) {
 144
 145                 if ($main::systime >= $lastq + $queueinterval) {
 146
 147                         # queue some message if the interval timer has gone off
 148                         queue_msg(0);
 149
 150                         # import any messages in the import directory
 151                         import_msgs();
 152
 153                         $lastq = $main::systime;
 154                 }
 155
 156                 # clean the message queue
 157                 clean_old() if $main::systime - $last_clean > 3600 ;
 158
 159                 # actual remove all the 'deleted' messages in one hit.
 160                 # this has to be delayed until here otherwise it only does one at
 161                 # a time because @msg is rewritten everytime del_msg is called.
 162                 my @del = grep {!$_->{tonode} && $_->{delete} && $_->{deletetime} < $main::systime} @msg;
 163                 for (@del) {
 164                         $_->del_msg;
 165                 }
 166
 167                 $last_clean = $main::systime;
 168                 return;
 169         }
 170
 171         my @f = split /\^/, $line;
 172         my ($pcno) = $f[0] =~ /^PC(\d\d)/; # just get the number
 173         my ($tonode, $fromnode) = @f[1, 2];
 174         my $stream = $f[3] if ($pcno >= 29 && $pcno <= 33) || $pcno == 42;
 175
 176  SWITCH: {
 177                 if ($pcno == 28) {              # incoming message
 178
 179                         # sort out various extant protocol errors that occur
 180                         my $origin = $f[13];
 181                         $origin = $self->call unless $origin && $origin gt ' ';
 182
 183                         # first look for any messages in the busy queue
 184                         # and cancel them this should both resolve timed out incoming messages
 185                         # and crossing of message between nodes, incoming messages have priority
 186
 187                         my $ref = get_busy($fromnode);
 188                         if ($ref) {
 189                                 my $otonode = $ref->{tonode} || "unknown";
 190                                 dbg("Busy, stopping msgno: $ref->{msgno} $fromnode->$otonode") if isdbg('msg');
 191                                 $ref->stop_msg($fromnode);
 192                         }
 193
 194                         my $t = cltounix($f[5], $f[6]);
 195                         $stream = next_transno($fromnode);
 196                         $ref = DXMsg->alloc($stream, uc $f[3], $f[4], $t, $f[7], $f[8], $origin, '0', $f[11]);
 197
 198                         # fill in various forwarding state variables
 199                         $ref->{fromnode} = $fromnode;
 200                         $ref->{tonode} = $tonode;
 201                         $ref->{rrreq} = $f[11];
 202                         $ref->{linesreq} = $f[10];
 203                         $ref->{stream} = $stream;
 204                         $ref->{count} = 0;      # no of lines between PC31s
 205                         dbg("new message from $f[4] to $f[3] '$f[8]' stream $fromnode/$stream\n") if isdbg('msg');
 206                         Log('msg', "Incoming message $f[4] to $f[3] '$f[8]' origin: $origin" );
 207                         set_fwq($fromnode, $stream, $ref); # store in work
 208                         set_busy($fromnode, $ref); # set interlock
 209                         $self->send(DXProt::pc30($fromnode, $tonode, $stream)); # send ack
 210                         $ref->{lastt} = $main::systime;
 211
 212                         # look to see whether this is a non private message sent to a known callsign
 213                         my $uref = DXUser->get_current($ref->{to});
 214                         if (is_callsign($ref->{to}) && !$ref->{private} && $uref && $uref->homenode) {
 215                                 $ref->{private} = 1;
 216                                 dbg("set bull to $ref->{to} to private") if isdbg('msg');
 217                                 Log('msg', "set bull to $ref->{to} to private");
 218                         }
 219                         last SWITCH;
 220                 }
 221
 222                 if ($pcno == 29) {              # incoming text
 223                         my $ref = get_fwq($fromnode, $stream);
 224                         if ($ref) {
 225                                 $f[4] =~ s/\%5E/^/g;
 226                                 if (@{$ref->{lines}}) {
 227                                         push @{$ref->{lines}}, $f[4];
 228                                 } else {
 229                                         # temporarily store any R: lines so that we end up with
 230                                         # only the first and last ones stored.
 231                                         if ($f[4] =~ m|^R:\d{6}/\d{4}|) {
 232                                                 push @{$ref->{tempr}}, $f[4];
 233                                         } else {
 234                                                 if (exists $ref->{tempr}) {
 235                                                         push @{$ref->{lines}}, shift @{$ref->{tempr}};
 236                                                         push @{$ref->{lines}}, pop @{$ref->{tempr}} if @{$ref->{tempr}};
 237                                                         delete $ref->{tempr};
 238                                                 }
 239                                                 push @{$ref->{lines}}, $f[4];
 240                                         }
 241                                 }
 242                                 $ref->{count}++;
 243                                 if ($ref->{count} >= $ref->{linesreq}) {
 244                                         $self->send(DXProt::pc31($fromnode, $tonode, $stream));
 245                                         dbg("stream $stream: $ref->{count} lines received\n") if isdbg('msg');
 246                                         $ref->{count} = 0;
 247                                 }
 248                                 $ref->{lastt} = $main::systime;
 249                         } else {
 250                                 dbg("PC29 from unknown stream $stream from $fromnode") if isdbg('msg');
 251                                 $self->send(DXProt::pc42($fromnode, $tonode, $stream)); # unknown stream
 252                         }
 253                         last SWITCH;
 254                 }
 255
 256                 if ($pcno == 30) {              # this is a incoming subject ack
 257                         my $ref = get_fwq($fromnode);   # note no stream at this stage
 258                         if ($ref) {
 259                                 del_fwq($fromnode);
 260                                 $ref->{stream} = $stream;
 261                                 $ref->{count} = 0;
 262                                 $ref->{linesreq} = 5;
 263                                 set_fwq($fromnode, $stream, $ref);      # new ref
 264                                 set_busy($fromnode, $ref); # interlock
 265                                 dbg("incoming subject ack stream $stream\n") if isdbg('msg');
 266                                 $ref->{lines} = [ $ref->read_msg_body ];
 267                                 $ref->send_tranche($self);
 268                                 $ref->{lastt} = $main::systime;
 269                         } else {
 270                                 dbg("PC30 from unknown stream $stream from $fromnode") if isdbg('msg');
 271                                 $self->send(DXProt::pc42($fromnode, $tonode, $stream)); # unknown stream
 272                         }
 273                         last SWITCH;
 274                 }
 275
 276                 if ($pcno == 31) {              # acknowledge a tranche of lines
 277                         my $ref = get_fwq($fromnode, $stream);
 278                         if ($ref) {
 279                                 dbg("tranche ack stream $stream\n") if isdbg('msg');
 280                                 $ref->send_tranche($self);
 281                                 $ref->{lastt} = $main::systime;
 282                         } else {
 283                                 dbg("PC31 from unknown stream $stream from $fromnode") if isdbg('msg');
 284                                 $self->send(DXProt::pc42($fromnode, $tonode, $stream)); # unknown stream
 285                         }
 286                         last SWITCH;
 287                 }
 288
 289                 if ($pcno == 32) {              # incoming EOM
 290                         dbg("stream $stream: EOM received\n") if isdbg('msg');
 291                         my $ref = get_fwq($fromnode, $stream);
 292                         if ($ref) {
 293                                 $self->send(DXProt::pc33($fromnode, $tonode, $stream)); # acknowledge it
 294
 295                                 # get the next msg no - note that this has NOTHING to do with the stream number in PC protocol
 296                                 # store the file or message
 297                                 # remove extraneous rubbish from the hash
 298                                 # remove it from the work in progress vector
 299                                 # stuff it on the msg queue
 300                                 if ($ref->{lines}) {
 301                                         if ($ref->{file}) {
 302                                                 $ref->store($ref->{lines});
 303                                         } else {
 304
 305                                                 # does an identical message already exist?
 306                                                 my $m;
 307                                                 for $m (@msg) {
 308                                                         if (substr($ref->{subject},0,28) eq substr($m->{subject},0,28) && $ref->{t} == $m->{t} && $ref->{from} eq $m->{from} && $ref->{to} eq $m->{to}) {
 309                                                                 $ref->stop_msg($fromnode);
 310                                                                 my $msgno = $m->{msgno};
 311                                                                 dbg("duplicate message from $ref->{from} -> $ref->{to} to msg: $msgno") if isdbg('msg');
 312                                                                 Log('msg', "duplicate message from $ref->{from} -> $ref->{to} to msg: $msgno");
 313                                                                 return;
 314                                                         }
 315                                                 }
 316
 317                                                 # swop addresses
 318                                                 $ref->swop_it($self->call);
 319
 320                                                 # look for 'bad' to addresses
 321                                                 if ($ref->dump_it($self->call)) {
 322                                                         $ref->stop_msg($fromnode);
 323                                                         dbg("'Bad' message $ref->{to}") if isdbg('msg');
 324                                                         Log('msg', "'Bad' message $ref->{to}");
 325                                                         return;
 326                                                 }
 327
 328                                                 # check the message for bad words
 329                                                 my @words;
 330                                                 for (@{$ref->{lines}}) {
 331                                                         push @words, BadWords::check($_);
 332                                                 }
 333                                                 push @words, BadWords::check($ref->{subject});
 334                                                 if (@words) {
 335                                                         dbg("$ref->{from} swore: '@words' -> $ref->{to} '$ref->{subject}' origin: $ref->{origin} via " . $self->call) if isdbg('msg');
 336                                                         Log('msg',"$ref->{from} swore: '@words' -> $ref->{to} origin: $ref->{origin} via " . $self->call);
 337                                                         Log('msg',"subject: $ref->{subject}");
 338                                                         for (@{$ref->{lines}}) {
 339                                                                 Log('msg', "line: $_");
 340                                                         }
 341                                                         $ref->stop_msg($fromnode);
 342                                                         return;
 343                                                 }
 344
 345                                                 $ref->{msgno} = next_transno("Msgno");
 346                                                 push @{$ref->{gotit}}, $fromnode; # mark this up as being received
 347                                                 $ref->store($ref->{lines});
 348                                                 $ref->notify;
 349                                                 add_dir($ref);
 350                                                 Log('msg', "Message $ref->{msgno} from $ref->{from} received from $fromnode for $ref->{to}");
 351                                         }
 352                                 }
 353                                 $ref->stop_msg($fromnode);
 354                         } else {
 355                                 dbg("PC32 from unknown stream $stream from $fromnode") if isdbg('msg');
 356                                 $self->send(DXProt::pc42($fromnode, $tonode, $stream)); # unknown stream
 357                         }
 358                         # queue_msg(0);
 359                         last SWITCH;
 360                 }
 361
 362                 if ($pcno == 33) {              # acknowledge the end of message
 363                         my $ref = get_fwq($fromnode, $stream);
 364                         if ($ref) {
 365                                 if ($ref->{private}) { # remove it if it private and gone off site#
 366                                         Log('msg', "Message $ref->{msgno} from $ref->{from} sent to $fromnode and deleted");
 367                                         $ref->mark_delete;
 368                                 } else {
 369                                         Log('msg', "Message $ref->{msgno} from $ref->{from} sent to $fromnode");
 370                                         push @{$ref->{gotit}}, $fromnode; # mark this up as being received
 371                                         $ref->store($ref->{lines});     # re- store the file
 372                                 }
 373                                 $ref->stop_msg($fromnode);
 374                         } else {
 375                                 dbg("PC33 from unknown stream $stream from $fromnode") if isdbg('msg');
 376                                 $self->send(DXProt::pc42($fromnode, $tonode, $stream)); # unknown stream
 377                         }
 378
 379                         # send next one if present
 380                         queue_msg(0);
 381                         last SWITCH;
 382                 }
 383
 384                 if ($pcno == 40) {              # this is a file request
 385                         $f[3] =~ s/\\/\//og; # change the slashes
 386                         $f[3] =~ s/\.//og;      # remove dots
 387                         $f[3] =~ s/^\///o;   # remove the leading /
 388                         $f[3] = lc $f[3];       # to lower case;
 389                         dbg("incoming file $f[3]\n") if isdbg('msg');
 390                         $f[3] = 'packclus/' . $f[3] unless $f[3] =~ /^packclus\//o;
 391
 392                         # create any directories
 393                         my @part = split /\//, $f[3];
 394                         my $part;
 395                         my $fn = "$main::root";
 396                         pop @part;                      # remove last part
 397                         foreach $part (@part) {
 398                                 $fn .= "/$part";
 399                                 next if -e $fn;
 400                                 last SWITCH if !mkdir $fn, 0777;
 401                                 dbg("created directory $fn\n") if isdbg('msg');
 402                         }
 403                         my $stream = next_transno($fromnode);
 404                         my $ref = DXMsg->alloc($stream, "$main::root/$f[3]", $self->call, time, !$f[4], $f[3], ' ', '0', '0');
 405
 406                         # forwarding variables
 407                         $ref->{fromnode} = $tonode;
 408                         $ref->{tonode} = $fromnode;
 409                         $ref->{linesreq} = $f[5];
 410                         $ref->{stream} = $stream;
 411                         $ref->{count} = 0;      # no of lines between PC31s
 412                         $ref->{file} = 1;
 413                         $ref->{lastt} = $main::systime;
 414                         set_fwq($fromnode, $stream, $ref); # store in work
 415                         $self->send(DXProt::pc30($fromnode, $tonode, $stream)); # send ack
 416
 417                         last SWITCH;
 418                 }
 419
 420                 if ($pcno == 42) {              # abort transfer
 421                         dbg("stream $stream: abort received\n") if isdbg('msg');
 422                         my $ref = get_fwq($fromnode, $stream);
 423                         if ($ref) {
 424                                 $ref->stop_msg($fromnode);
 425                                 $ref = undef;
 426                         }
 427                         last SWITCH;
 428                 }
 429
 430                 if ($pcno == 49) {      # global delete on subject
 431                         for (@msg) {
 432                                 if ($_->{from} eq $f[1] && $_->{subject} eq $f[2]) {
 433                                         $_->mark_delete;
 434                                         Log('msg', "Message $_->{msgno} from $_->{from} ($_->{subject}) fully deleted");
 435                                         DXChannel::broadcast_nodes($line, $self);
 436                                 }
 437                         }
 438                 }
 439         }
 440 }
 441
 442
 443 sub notify
 444 {
 445         my $ref = shift;
 446         my $to = $ref->{to};
 447         my $uref = DXUser->get_current($to);
 448         my $dxchan = DXChannel->get($to);
 449         if (((*Net::SMTP && $email_server) || $email_prog) && $uref && $uref->wantemail) {
 450                 my $email = $uref->email;
 451                 if ($email) {
 452                         my @rcpt = ref $email ? @{$email} : $email;
 453                         my $fromaddr = $email_from || $main::myemail;
 454                         my @headers = ("To: $ref->{to}",
 455                                                    "From: $fromaddr",
 456                                                    "Subject: [DXSpider: $ref->{from}] $ref->{subject}",
 457                                                    "X-DXSpider-To: $ref->{to}",
 458                                                    "X-DXSpider-From: $ref->{from}\@$ref->{origin}",
 459                                                    "X-DXSpider-Gateway: $main::mycall"
 460                                                   );
 461                         my @data = ("Msgno: $ref->{msgno} To: $to From: $ref->{from}\@$ref->{origin} Gateway: $main::mycall",
 462                                                 "",
 463                                                 $ref->read_msg_body
 464                                            );
 465                         my $msg;
 466                         undef $!;
 467                         if (*Net::SMTP && $email_server) {
 468                                 $msg = Net::SMTP->new($email_server);
 469                                 if ($msg) {
 470                                         $msg->mail($fromaddr);
 471                                         $msg->to(@rcpt);
 472                                         $msg->data(map {"$_\n"} @headers, '', @data);
 473                                         $msg->quit;
 474                                 }
 475                         } elsif ($email_prog) {
 476                                 $msg = new IO::File "|$email_prog " . join(' ', @rcpt);
 477                                 if ($msg) {
 478                                         print $msg map {"$_\r\n"} @headers, '', @data, '.';
 479                                         $msg->close;
 480                                 }
 481                         }
 482                         dbg("email forwarding error $!") if isdbg('msg') && !$msg && defined $!;
 483                 }
 484         }
 485         $dxchan->send($dxchan->msg('m9')) if $dxchan && $dxchan->is_user;
 486 }
 487
 488 # store a message away on disc or whatever
 489 #
 490 # NOTE the second arg is a REFERENCE not a list
 491 sub store
 492 {
 493         my $ref = shift;
 494         my $lines = shift;
 495
 496         if ($ref->{file}) {                     # a file
 497                 dbg("To be stored in $ref->{to}\n") if isdbg('msg');
 498
 499                 my $fh = new IO::File "$ref->{to}", "w";
 500                 if (defined $fh) {
 501                         my $line;
 502                         foreach $line (@{$lines}) {
 503                                 print $fh "$line\n";
 504                         }
 505                         $fh->close;
 506                         dbg("file $ref->{to} stored\n") if isdbg('msg');
 507                         Log('msg', "file $ref->{to} from $ref->{from} stored" );
 508                 } else {
 509                         confess "can't open file $ref->{to} $!";
 510                 }
 511         } else {                                        # a normal message
 512
 513                 # attempt to open the message file
 514                 my $fn = filename($ref->{msgno});
 515
 516                 dbg("To be stored in $fn\n") if isdbg('msg');
 517
 518                 # now save the file, overwriting what's there, YES I KNOW OK! (I will change it if it's a problem)
 519                 my $fh = new IO::File "$fn", "w";
 520                 if (defined $fh) {
 521                         my $rr = $ref->{rrreq} ? '1' : '0';
 522                         my $priv = $ref->{private} ? '1': '0';
 523                         my $del = $ref->{delete} ? '1' : '0';
 524                         my $delt = $ref->{deletetime} || $ref->{t} + $maxage;
 525                         print $fh "=== $ref->{msgno}^$ref->{to}^$ref->{from}^$ref->{t}^$priv^$ref->{subject}^$ref->{origin}^$ref->{'read'}^$rr^$del^$delt\n";
 526                         print $fh "=== ", join('^', @{$ref->{gotit}}), "\n";
 527                         my $line;
 528                         $ref->{size} = 0;
 529                         foreach $line (@{$lines}) {
 530                                 $line =~ s/[\x00-\x08\x0a-\x1f\x80-\x9f]/./g;
 531                                 $ref->{size} += (length $line) + 1;
 532                                 print $fh "$line\n";
 533                         }
 534                         $fh->close;
 535                         dbg("msg $ref->{msgno} stored\n") if isdbg('msg');
 536                         Log('msg', "msg $ref->{msgno} from $ref->{from} to $ref->{to} stored" );
 537                 } else {
 538                         confess "can't open msg file $fn $!";
 539                 }
 540         }
 541
 542 }
 543
 544 # delete a message
 545 sub del_msg
 546 {
 547         my $self = shift;
 548         my $dxchan = shift;
 549         my $call = '';
 550         $call = ' by ' . $dxchan->call if $dxchan;
 551
 552         if ($self->{tonode}) {
 553                 $self->{delete}++;
 554                 $self->{deletetime} = 0;
 555                 dbg("Msgno $self->{msgno} but marked as expunged$call") if isdbg('msg');
 556         } else {
 557                 # remove it from the active message list
 558                 @msg = grep { $_ != $self } @msg;
 559
 560                 Log('msg', "Msgno $self->{msgno} expunged$call");
 561                 dbg("Msgno $self->{msgno} expunged$call") if isdbg('msg');
 562
 563                 # remove the file
 564                 unlink filename($self->{msgno});
 565         }
 566 }
 567
 568 sub mark_delete
 569 {
 570         my $ref = shift;
 571         my $t = shift;
 572         $t = $main::systime + $residencetime unless defined $t;
 573
 574         $ref->{delete}++;
 575         $ref->{deletetime} = $t;
 576         $ref->store( [$ref->read_msg_body] );
 577 }
 578
 579 sub unmark_delete
 580 {
 581         my $ref = shift;
 582         my $t = shift;
 583         delete $ref->{delete};
 584         delete $ref->{deletetime};
 585 }
 586
 587 # clean out old messages from the message queue
 588 sub clean_old
 589 {
 590         my $ref;
 591
 592         # mark old messages for deletion
 593         foreach $ref (@msg) {
 594                 if (ref($ref) && !$ref->{keep} && $ref->{deletetime} < $main::systime) {
 595
 596                         # this is for IMMEDIATE destruction
 597                         $ref->{delete}++;
 598                         $ref->{deletetime} = 0;
 599                 }
 600         }
 601 }
 602
 603 # read in a message header
 604 sub read_msg_header
 605 {
 606         my $fn = shift;
 607         my $file;
 608         my $line;
 609         my $ref;
 610         my @f;
 611         my $size;
 612
 613         $file = new IO::File "$fn";
 614         if (!$file) {
 615             dbg("Error reading $fn $!");
 616             Log('err', "Error reading $fn $!");
 617                 return undef;
 618         }
 619         $size = -s $fn;
 620         $line = <$file>;                        # first line
 621         if ($size == 0 || !$line) {
 622             dbg("Empty $fn $!");
 623             Log('err', "Empty $fn $!");
 624                 return undef;
 625         }
 626         chomp $line;
 627         $size -= length $line;
 628         if (! $line =~ /^===/o) {
 629                 dbg("corrupt first line in $fn ($line)");
 630                 Log('err', "corrupt first line in $fn ($line)");
 631                 return undef;
 632         }
 633         $line =~ s/^=== //o;
 634         @f = split /\^/, $line;
 635         $ref = DXMsg->alloc(@f);
 636
 637         $line = <$file>;                        # second line
 638         chomp $line;
 639         $size -= length $line;
 640         if (! $line =~ /^===/o) {
 641             dbg("corrupt second line in $fn ($line)");
 642             Log('err', "corrupt second line in $fn ($line)");
 643                 return undef;
 644         }
 645         $line =~ s/^=== //o;
 646         $ref->{gotit} = [];
 647         @f = split /\^/, $line;
 648         push @{$ref->{gotit}}, @f;
 649         $ref->{size} = $size;
 650
 651         close($file);
 652
 653         return $ref;
 654 }
 655
 656 # read in a message header
 657 sub read_msg_body
 658 {
 659         my $self = shift;
 660         my $msgno = $self->{msgno};
 661         my $file;
 662         my $line;
 663         my $fn = filename($msgno);
 664         my @out;
 665
 666         $file = new IO::File;
 667         if (!open($file, $fn)) {
 668                 dbg("Error reading $fn $!");
 669                 Log('err' ,"Error reading $fn $!");
 670                 return ();
 671         }
 672         @out = map {chomp; $_} <$file>;
 673         close($file);
 674
 675         shift @out if $out[0] =~ /^=== /;
 676         shift @out if $out[0] =~ /^=== /;
 677         return @out;
 678 }
 679
 680 # send a tranche of lines to the other end
 681 sub send_tranche
 682 {
 683         my ($self, $dxchan) = @_;
 684         my @out;
 685         my $to = $self->{tonode};
 686         my $from = $self->{fromnode};
 687         my $stream = $self->{stream};
 688         my $lines = $self->{lines};
 689         my ($c, $i);
 690
 691         for ($i = 0, $c = $self->{count}; $i < $self->{linesreq} && $c < @$lines; $i++, $c++) {
 692                 push @out, DXProt::pc29($to, $from, $stream, $lines->[$c]);
 693     }
 694     $self->{count} = $c;
 695
 696     push @out, DXProt::pc32($to, $from, $stream) if $i < $self->{linesreq};
 697         $dxchan->send(@out);
 698 }
 699
 700
 701 # find a message to send out and start the ball rolling
 702 sub queue_msg
 703 {
 704         my $sort = shift;
 705         my $ref;
 706         my $clref;
 707
 708         # bat down the message list looking for one that needs to go off site and whose
 709         # nearest node is not busy.
 710
 711         dbg("queue msg ($sort)\n") if isdbg('msg');
 712         my @nodelist = DXChannel::get_all_nodes;
 713         foreach $ref (@msg) {
 714
 715                 # ignore 'delayed' messages until their waiting time has expired
 716                 if (exists $ref->{waitt}) {
 717                         next if $ref->{waitt} > $main::systime;
 718                         delete $ref->{waitt};
 719                 }
 720
 721                 # any time outs?
 722                 if (exists $ref->{lastt} && $main::systime >= $ref->{lastt} + $timeout) {
 723                         my $node = $ref->{tonode};
 724                         dbg("Timeout, stopping msgno: $ref->{msgno} -> $node") if isdbg('msg');
 725                         Log('msg', "Timeout, stopping msgno: $ref->{msgno} -> $node");
 726                         $ref->stop_msg($node);
 727
 728                         # delay any outgoing messages that fail
 729                         $ref->{waitt} = $main::systime + $waittime + int rand(120) if $node ne $main::mycall;
 730                         delete $ref->{lastt};
 731                         next;
 732                 }
 733
 734                 # is it being sent anywhere currently?
 735                 next if $ref->{tonode};           # ignore it if it already being processed
 736
 737                 # is it awaiting deletion?
 738                 next if $ref->{delete};
 739
 740                 # firstly, is it private and unread? if so can I find the recipient
 741                 # in my cluster node list offsite?
 742
 743                 # deal with routed private messages
 744                 my $dxchan;
 745                 if ($ref->{private}) {
 746                         next if $ref->{'read'};           # if it is read, it is stuck here
 747                         $clref = Route::get($ref->{to});
 748                         if ($clref) {
 749                                 $dxchan = $clref->dxchan;
 750                                 if ($dxchan) {
 751                                         if ($dxchan->is_node) {
 752                                                 next if $clref->call eq $main::mycall;  # i.e. it lives here
 753                                                 $ref->start_msg($dxchan) if !get_busy($dxchan->call)  && $dxchan->state eq 'normal';
 754                                         }
 755                                 } else {
 756                                         dbg("Route: No dxchan for $ref->{to} " . ref($clref) ) if isdbg('msg');
 757                                 }
 758                         }
 759                 } else {
 760
 761                         # otherwise we are dealing with a bulletin or forwarded private message
 762                         # compare the gotit list with
 763                         # the nodelist up above, if there are sites that haven't got it yet
 764                         # then start sending it - what happens when we get loops is anyone's
 765                         # guess, use (to, from, time, subject) tuple?
 766                         foreach $dxchan (@nodelist) {
 767                                 my $call = $dxchan->call;
 768                                 next unless $call;
 769                                 next if $call eq $main::mycall;
 770                                 next if ref $ref->{gotit} && grep $_ eq $call, @{$ref->{gotit}};
 771                                 next unless $ref->forward_it($call);           # check the forwarding file
 772                                 next if $ref->{tonode};           # ignore it if it already being processed
 773
 774                                 # if we are here we have a node that doesn't have this message
 775                                 if (!get_busy($call)  && $dxchan->state eq 'normal') {
 776                                         $ref->start_msg($dxchan);
 777                                         last;
 778                                 }
 779                         }
 780                 }
 781
 782                 # if all the available nodes are busy then stop
 783                 last if @nodelist == scalar grep { get_busy($_->call) } @nodelist;
 784         }
 785
 786
 787 }
 788
 789 # is there a message for me?
 790 sub for_me
 791 {
 792         my $call = uc shift;
 793         my $ref;
 794         my $count;
 795
 796         foreach $ref (@msg) {
 797                 # is it for me, private and unread?
 798                 if ($ref->{to} eq $call && $ref->{private}) {
 799                    $count++ unless $ref->{'read'} || $ref->{delete};
 800                 }
 801         }
 802         return $count;
 803 }
 804
 805 # start the message off on its travels with a PC28
 806 sub start_msg
 807 {
 808         my ($self, $dxchan) = @_;
 809
 810         confess("trying to start started msg $self->{msgno} nodes: $self->{fromnode} -> $self->{tonode}") if $self->{tonode};
 811         dbg("start msg $self->{msgno}\n") if isdbg('msg');
 812         $self->{linesreq} = 10;
 813         $self->{count} = 0;
 814         $self->{tonode} = $dxchan->call;
 815         $self->{fromnode} = $main::mycall;
 816         set_busy($self->{tonode}, $self);
 817         set_fwq($self->{tonode}, undef, $self);
 818         $self->{lastt} = $main::systime;
 819         my ($fromnode, $origin);
 820         $fromnode = $self->{fromnode};
 821         $origin = $self->{origin};
 822         $dxchan->send(DXProt::pc28($self->{tonode}, $fromnode, $self->{to}, $self->{from}, $self->{t}, $self->{private}, $self->{subject}, $origin, $self->{rrreq}));
 823 }
 824
 825 # get the ref of a busy node
 826 sub get_busy
 827 {
 828         my $call = shift;
 829         return $busy{$call};
 830 }
 831
 832 sub set_busy
 833 {
 834         my $call = shift;
 835         return $busy{$call} = shift;
 836 }
 837
 838 sub del_busy
 839 {
 840         my $call = shift;
 841         return delete $busy{$call};
 842 }
 843
 844 # get the whole busy queue
 845 sub get_all_busy
 846 {
 847         return keys %busy;
 848 }
 849
 850 # get a forwarding queue entry
 851 sub get_fwq
 852 {
 853         my $call = shift;
 854         my $stream = shift || '0';
 855         return $work{"$call,$stream"};
 856 }
 857
 858 # delete a forwarding queue entry
 859 sub del_fwq
 860 {
 861         my $call = shift;
 862         my $stream = shift || '0';
 863         return delete $work{"$call,$stream"};
 864 }
 865
 866 # set a fwq entry
 867 sub set_fwq
 868 {
 869         my $call = shift;
 870         my $stream = shift || '0';
 871         return $work{"$call,$stream"} = shift;
 872 }
 873
 874 # get the whole forwarding queue
 875 sub get_all_fwq
 876 {
 877         return keys %work;
 878 }
 879
 880 # stop a message from continuing, clean it out, unlock interlocks etc
 881 sub stop_msg
 882 {
 883         my $self = shift;
 884         my $node = shift;
 885         my $stream = $self->{stream};
 886
 887
 888         dbg("stop msg $self->{msgno} -> node $node\n") if isdbg('msg');
 889         del_fwq($node, $stream);
 890         $self->workclean;
 891         del_busy($node);
 892 }
 893
 894 sub workclean
 895 {
 896         my $ref = shift;
 897         delete $ref->{lines};
 898         delete $ref->{linesreq};
 899         delete $ref->{tonode};
 900         delete $ref->{fromnode};
 901         delete $ref->{stream};
 902         delete $ref->{file};
 903         delete $ref->{count};
 904         delete $ref->{tempr};
 905         delete $ref->{lastt};
 906         delete $ref->{waitt};
 907 }
 908
 909 # get a new transaction number from the file specified
 910 sub next_transno
 911 {
 912         my $name = shift;
 913         $name =~ s/\W//og;                      # remove non-word characters
 914         my $fn = "$msgdir/$name";
 915         my $msgno;
 916
 917         my $fh = new IO::File;
 918         if (sysopen($fh, $fn, O_RDWR|O_CREAT, 0666)) {
 919                 $fh->autoflush(1);
 920                 $msgno = $fh->getline || '0';
 921                 chomp $msgno;
 922                 $msgno++;
 923                 seek $fh, 0, 0;
 924                 $fh->print("$msgno\n");
 925                 dbg("msgno $msgno allocated for $name\n") if isdbg('msg');
 926                 $fh->close;
 927         } else {
 928                 confess "can't open $fn $!";
 929         }
 930         return $msgno;
 931 }
 932
 933 # initialise the message 'system', read in all the message headers
 934 sub init
 935 {
 936         my $dir = new IO::File;
 937         my @dir;
 938         my $ref;
 939
 940         # load various control files
 941         dbg("load badmsg: " . (load_badmsg() or "Ok"));
 942         dbg("load forward: " . (load_forward() or "Ok"));
 943         dbg("load swop: " . (load_swop() or "Ok"));
 944
 945         # read in the directory
 946         opendir($dir, $msgdir) or confess "can't open $msgdir $!";
 947         @dir = readdir($dir);
 948         closedir($dir);
 949
 950         @msg = ();
 951         for (sort @dir) {
 952                 next unless /^m\d\d\d\d\d\d$/;
 953
 954                 $ref = read_msg_header("$msgdir/$_");
 955                 unless ($ref) {
 956                         dbg("Deleting $_");
 957                         Log('err', "Deleting $_");
 958                         unlink "$msgdir/$_";
 959                         next;
 960                 }
 961
 962                 # delete any messages to 'badmsg.pl' places
 963                 if ($ref->dump_it('')) {
 964                         dbg("'Bad' TO address $ref->{to}") if isdbg('msg');
 965                         Log('msg', "'Bad' TO address $ref->{to}");
 966                         $ref->del_msg;
 967                         next;
 968                 }
 969
 970                 # add the message to the available queue
 971                 add_dir($ref);
 972         }
 973 }
 974
 975 # add the message to the directory listing
 976 sub add_dir
 977 {
 978         my $ref = shift;
 979         confess "tried to add a non-ref to the msg directory" if !ref $ref;
 980         push @msg, $ref;
 981 }
 982
 983 # return all the current messages
 984 sub get_all
 985 {
 986         return @msg;
 987 }
 988
 989 # get a particular message
 990 sub get
 991 {
 992         my $msgno = shift;
 993         for (@msg) {
 994                 return $_ if $_->{msgno} == $msgno;
 995                 last if $_->{msgno} > $msgno;
 996         }
 997         return undef;
 998 }
 999
1000 # return the official filename for a message no
1001 sub filename
1002 {
1003         return sprintf "$msgdir/m%06d", shift;
1004 }
1005
1006 #
1007 # return a list of valid elements
1008 #
1009
1010 sub fields
1011 {
1012         return keys(%valid);
1013 }
1014
1015 #
1016 # return a prompt for a field
1017 #
1018
1019 sub field_prompt
1020 {
1021         my ($self, $ele) = @_;
1022         return $valid{$ele};
1023 }
1024
1025 #
1026 # send a message state machine
1027 sub do_send_stuff
1028 {
1029         my $self = shift;
1030         my $line = shift;
1031         my @out;
1032
1033         if ($self->state eq 'send1') {
1034                 #  $DB::single = 1;
1035                 confess "local var gone missing" if !ref $self->{loc};
1036                 my $loc = $self->{loc};
1037                 if (my @ans = BadWords::check($line)) {
1038                         $self->{badcount} += @ans;
1039                         Log('msg', $self->call . " used badwords: @ans to @{$loc->{to}} in msg");
1040                         $loc->{reject}++;
1041                 }
1042                 $loc->{subject} = $line;
1043                 $loc->{lines} = [];
1044                 $self->state('sendbody');
1045                 #push @out, $self->msg('sendbody');
1046                 push @out, $self->msg('m8');
1047         } elsif ($self->state eq 'sendbody') {
1048                 confess "local var gone missing" if !ref $self->{loc};
1049                 my $loc = $self->{loc};
1050                 if ($line eq "\032" || $line eq '%1A' || uc $line eq "/EX") {
1051                         my $to;
1052                         unless ($loc->{reject}) {
1053                                 foreach $to (@{$loc->{to}}) {
1054                                         my $ref;
1055                                         my $systime = $main::systime;
1056                                         my $mycall = $main::mycall;
1057                                         $ref = DXMsg->alloc(DXMsg::next_transno('Msgno'),
1058                                                                                 uc $to,
1059                                                                                 exists $loc->{from} ? $loc->{from} : $self->call,
1060                                                                                 $systime,
1061                                                                                 $loc->{private},
1062                                                                                 $loc->{subject},
1063                                                                                 exists $loc->{origin} ? $loc->{origin} : $mycall,
1064                                                                                 '0',
1065                                                                                 $loc->{rrreq});
1066                                         $ref->swop_it($self->call);
1067                                         $ref->store($loc->{lines});
1068                                         $ref->add_dir();
1069                                         push @out, $self->msg('m11', $ref->{msgno}, $to);
1070                                         #push @out, "msgno $ref->{msgno} sent to $to";
1071                                         $ref->notify;
1072                                 }
1073                         } else {
1074                                 Log('msg', $self->call . " swore to @{$loc->{to}} subject: '$loc->{subject}' in msg, REJECTED");
1075                         }
1076
1077                         delete $loc->{lines};
1078                         delete $loc->{to};
1079                         delete $self->{loc};
1080                         $self->func(undef);
1081
1082                         $self->state('prompt');
1083                 } elsif ($line eq "\031" || uc $line eq "/ABORT" || uc $line eq "/QUIT") {
1084                         #push @out, $self->msg('sendabort');
1085                         push @out, $self->msg('m10');
1086                         delete $loc->{lines};
1087                         delete $loc->{to};
1088                         delete $self->{loc};
1089                         $self->func(undef);
1090                         $self->state('prompt');
1091                 } elsif ($line =~ m|^/+\w+|) {
1092                         # this is a command that you want display for your own reference
1093                         # or if it has TWO slashes is a command
1094                         $line =~ s|^/||;
1095                         my $store = $line =~ s|^/+||;
1096                         my @in = $self->run_cmd($line);
1097                         push @out, @in;
1098                         if ($store) {
1099                                 foreach my $l (@in) {
1100                                         if (my @ans = BadWords::check($l)) {
1101                                                 $self->{badcount} += @ans;
1102                                                 Log('msg', $self->call . " used badwords: @ans to @{$loc->{to}} subject: '$loc->{subject}' in msg") unless $loc->{reject};
1103                                                 Log('msg', "line: $l");
1104                                                 $loc->{reject}++;
1105                                         }
1106                                         push @{$loc->{lines}}, length($l) > 0 ? $l : " ";
1107                                 }
1108                         }
1109                 } else {
1110                         if (my @ans = BadWords::check($line)) {
1111                                 $self->{badcount} += @ans;
1112                                 Log('msg', $self->call . " used badwords: @ans to @{$loc->{to}} subject: '$loc->{subject}' in msg") unless $loc->{reject};
1113                                 Log('msg', "line: $line");
1114                                 $loc->{reject}++;
1115                         }
1116
1117                         if ($loc->{lines} && @{$loc->{lines}}) {
1118                                 push @{$loc->{lines}}, length($line) > 0 ? $line : " ";
1119                         } else {
1120                                 # temporarily store any R: lines so that we end up with
1121                                 # only the first and last ones stored.
1122                                 if ($line =~ m|^R:\d{6}/\d{4}|) {
1123                                         push @{$loc->{tempr}}, $line;
1124                                 } else {
1125                                         if (exists $loc->{tempr}) {
1126                                                 push @{$loc->{lines}}, shift @{$loc->{tempr}};
1127                                                 push @{$loc->{lines}}, pop @{$loc->{tempr}} if @{$loc->{tempr}};
1128                                                 delete $loc->{tempr};
1129                                         }
1130                                         push @{$loc->{lines}}, length($line) > 0 ? $line : " ";
1131                                 }
1132                         }
1133
1134                         # i.e. it ain't and end or abort, therefore store the line
1135                 }
1136         }
1137         return @out;
1138 }
1139
1140 # return the standard directory line for this ref
1141 sub dir
1142 {
1143         my $ref = shift;
1144         my $flag = $ref->{private} && $ref->{read} ? '-' : ' ';
1145         if ($ref->{delete}) {
1146                 $flag = $ref->{deletetime} > $main::systime ? 'D' : 'E';
1147         }
1148         return sprintf("%6d%s%s%5d %8.8s %8.8s %-6.6s %5.5s %-30.30s",
1149                                    $ref->{msgno}, $flag, $ref->{private} ? 'p' : ' ',
1150                                    $ref->{size}, $ref->{to}, $ref->{from}, cldate($ref->{t}),
1151                                    ztime($ref->{t}), $ref->{subject});
1152 }
1153
1154 # load the forward table
1155 sub load_forward
1156 {
1157         my @out;
1158         my $s = readfilestr($forwardfn);
1159         if ($s) {
1160                 eval $s;
1161                 push @out, $@ if $@;
1162         }
1163         return @out;
1164 }
1165
1166 # load the bad message table
1167 sub load_badmsg
1168 {
1169         my @out;
1170         my $s = readfilestr($badmsgfn);
1171         if ($s) {
1172                 eval $s;
1173                 push @out, $@ if $@;
1174         }
1175         return @out;
1176 }
1177
1178 # load the swop message table
1179 sub load_swop
1180 {
1181         my @out;
1182         my $s = readfilestr($swopfn);
1183         if ($s) {
1184                 eval $s;
1185                 push @out, $@ if $@;
1186         }
1187         return @out;
1188 }
1189
1190 #
1191 # forward that message or not according to the forwarding table
1192 # returns 1 for forward, 0 - to ignore
1193 #
1194
1195 sub forward_it
1196 {
1197         my $ref = shift;
1198         my $call = shift;
1199         my $i;
1200
1201         for ($i = 0; $i < @forward; $i += 5) {
1202                 my ($sort, $field, $pattern, $action, $bbs) = @forward[$i..($i+4)];
1203                 my $tested;
1204
1205                 # are we interested?
1206                 next if $ref->{private} && $sort ne 'P';
1207                 next if !$ref->{private} && $sort ne 'B';
1208
1209                 # select field
1210                 $tested = $ref->{to} if $field eq 'T';
1211                 $tested = $ref->{from} if $field eq 'F';
1212                 $tested = $ref->{origin} if $field eq 'O';
1213                 $tested = $ref->{subject} if $field eq 'S';
1214
1215                 if (!$pattern || $tested =~ m{$pattern}i) {
1216                         return 0 if $action eq 'I';
1217                         return 1 if !$bbs || grep $_ eq $call, @{$bbs};
1218                 }
1219         }
1220         return 0;
1221 }
1222
1223 #
1224 # look down the forward table to see whether this is a valid bull
1225 # or not (ie it will forward somewhere even if it is only here)
1226 #
1227 sub valid_bull_addr
1228 {
1229         my $call = shift;
1230         my $i;
1231
1232         unless (@forward) {
1233                 return 1 if $call =~ /^ALL/;
1234                 return 1 if $call =~ /^DX/;
1235                 return 0;
1236         }
1237
1238         for ($i = 0; $i < @forward; $i += 5) {
1239                 my ($sort, $field, $pattern, $action, $bbs) = @forward[$i..($i+4)];
1240                 if ($field eq 'T') {
1241                         if (!$pattern || $call =~ m{$pattern}i) {
1242                                 return 1;
1243                         }
1244                 }
1245         }
1246         return 0;
1247 }
1248
1249 sub dump_it
1250 {
1251         my $ref = shift;
1252         my $call = shift;
1253         my $i;
1254
1255         for ($i = 0; $i < @badmsg; $i += 3) {
1256                 my ($sort, $field, $pattern) = @badmsg[$i..($i+2)];
1257                 my $tested;
1258
1259                 # are we interested?
1260                 next if $ref->{private} && $sort ne 'P';
1261                 next if !$ref->{private} && $sort ne 'B';
1262
1263                 # select field
1264                 $tested = $ref->{to} if $field eq 'T';
1265                 $tested = $ref->{from} if $field eq 'F';
1266                 $tested = $ref->{origin} if $field eq 'O';
1267                 $tested = $ref->{subject} if $field eq 'S';
1268                 $tested = $call if $field eq 'I';
1269
1270                 if (!$pattern || $tested =~ m{$pattern}i) {
1271                         return 1;
1272                 }
1273         }
1274         return 0;
1275 }
1276
1277 sub swop_it
1278 {
1279         my $ref = shift;
1280         my $call = shift;
1281         my $i;
1282         my $count = 0;
1283
1284         for ($i = 0; $i < @swop; $i += 5) {
1285                 my ($sort, $field, $pattern, $tfield, $topattern) = @swop[$i..($i+4)];
1286                 my $tested;
1287                 my $swop;
1288                 my $old;
1289
1290                 # are we interested?
1291                 next if $ref->{private} && $sort ne 'P';
1292                 next if !$ref->{private} && $sort ne 'B';
1293
1294                 # select field
1295                 $tested = $ref->{to} if $field eq 'T';
1296                 $tested = $ref->{from} if $field eq 'F';
1297                 $tested = $ref->{origin} if $field eq 'O';
1298                 $tested = $ref->{subject} if $field eq 'S';
1299
1300                 # select swop field
1301                 $old = $swop = $ref->{to} if $tfield eq 'T';
1302                 $old = $swop = $ref->{from} if $tfield eq 'F';
1303                 $old = $swop = $ref->{origin} if $tfield eq 'O';
1304                 $old = $swop = $ref->{subject} if $tfield eq 'S';
1305
1306                 if ($tested =~ m{$pattern}i) {
1307                         if ($tested eq $swop) {
1308                                 $swop =~ s{$pattern}{$topattern}i;
1309                         } else {
1310                                 $swop = $topattern;
1311                         }
1312                         Log('msg', "Msg $ref->{msgno}: $tfield $old -> $swop");
1313                         Log('dbg', "Msg $ref->{msgno}: $tfield $old -> $swop");
1314                         $ref->{to} = $swop if $tfield eq 'T';
1315                         $ref->{from} = $swop if $tfield eq 'F';
1316                         $ref->{origin} = $swop if $tfield eq 'O';
1317                         $ref->{subject} = $swop if $tfield eq 'S';
1318                         ++$count;
1319                 }
1320         }
1321         return $count;
1322 }
1323
1324 # import any msgs in the import directory
1325 # the messages are in BBS format (but may have cluster extentions
1326 # so SB UK < GB7TLH is legal
1327 sub import_msgs
1328 {
1329         # are there any to do in this directory?
1330         return unless -d $importfn;
1331         unless (opendir(DIR, $importfn)) {
1332                 dbg("can\'t open $importfn $!") if isdbg('msg');
1333                 Log('msg', "can\'t open $importfn $!");
1334                 return;
1335         }
1336
1337         my @names = readdir(DIR);
1338         closedir(DIR);
1339         my $name;
1340         foreach $name (@names) {
1341                 next if $name =~ /^\./;
1342                 my $splitit = $name =~ /^split/;
1343                 my $fn = "$importfn/$name";
1344                 next unless -f $fn;
1345                 unless (open(MSG, $fn)) {
1346                         dbg("can\'t open import file $fn $!") if isdbg('msg');
1347                         Log('msg', "can\'t open import file $fn $!");
1348                         unlink($fn);
1349                         next;
1350                 }
1351                 my @msg = map { chomp; $_ } <MSG>;
1352                 close(MSG);
1353                 unlink($fn);
1354                 my @out = import_one($main::me, \@msg, $splitit);
1355                 Log('msg', @out);
1356         }
1357 }
1358
1359 # import one message as a list in bbs (as extended) mode
1360 # takes a reference to an array containing the whole message
1361 sub import_one
1362 {
1363         my $dxchan = shift;
1364         my $ref = shift;
1365         my $splitit = shift;
1366         my $private = '1';
1367         my $rr = '0';
1368         my $notincalls = 1;
1369         my $from = $dxchan->call;
1370         my $origin = $main::mycall;
1371         my @to;
1372         my @out;
1373
1374         # first line;
1375         my $line = shift @$ref;
1376         my @f = split /([\s\@\$])/, $line;
1377         @f = map {s/\s+//g; length $_ ? $_ : ()} @f;
1378
1379         unless (@f && $f[0] =~ /^(:?S|SP|SB|SEND)$/ ) {
1380                 my $m = "invalid first line in import '$line'";
1381                 dbg($m) if isdbg('msg');
1382                 return (1, $m);
1383         }
1384         while (@f) {
1385                 my $f = uc shift @f;
1386                 next if $f eq 'SEND';
1387
1388                 # private / noprivate / rr
1389                 if ($notincalls && ($f eq 'B' || $f eq 'SB' || $f =~ /^NOP/oi)) {
1390                         $private = '0';
1391                 } elsif ($notincalls && ($f eq 'P' || $f eq 'SP' || $f =~ /^PRI/oi)) {
1392                         ;
1393                 } elsif ($notincalls && ($f eq 'RR')) {
1394                         $rr = '1';
1395                 } elsif (($f =~ /^[\@\.\#\$]$/ || $f eq '.#') && @f) {       # this is bbs syntax, for AT
1396                         shift @f;
1397                 } elsif ($f eq '<' && @f) {     # this is bbs syntax  for from call
1398                         $from = uc shift @f;
1399                 } elsif ($f =~ /^\$/) {     # this is bbs syntax  for a bid
1400                         next;
1401                 } elsif ($f =~ /^<(\S+)/) {     # this is bbs syntax  for from call
1402                         $from = $1;
1403                 } elsif ($f =~ /^\$\S+/) {     # this is bbs syntax for bid
1404                         ;
1405                 } else {
1406
1407                         # callsign ?
1408                         $notincalls = 0;
1409
1410                         # is this callsign a distro?
1411                         my $fn = "$msgdir/distro/$f.pl";
1412                         if (-e $fn) {
1413                                 my $fh = new IO::File $fn;
1414                                 if ($fh) {
1415                                         local $/ = undef;
1416                                         my $s = <$fh>;
1417                                         $fh->close;
1418                                         my @call;
1419                                         @call = eval $s;
1420                                         return (1, "Error in Distro $f.pl:", $@) if $@;
1421                                         if (@call > 0) {
1422                                                 push @f, @call;
1423                                                 next;
1424                                         }
1425                                 }
1426                         }
1427
1428                         if (grep $_ eq $f, @DXMsg::badmsg) {
1429                                 push @out, $dxchan->msg('m3', $f);
1430                         } else {
1431                                 push @to, $f;
1432                         }
1433                 }
1434         }
1435
1436         # subject is the next line
1437         my $subject = shift @$ref;
1438
1439         # strip off trailing lines
1440         pop @$ref while (@$ref && $$ref[-1] =~ /^\s*$/);
1441
1442         # strip off /EX or /ABORT
1443         return ("aborted") if @$ref && $$ref[-1] =~ m{^/ABORT$}i;
1444         pop @$ref if (@$ref && $$ref[-1] =~ m{^/EX$}i);
1445
1446         # sort out any splitting that needs to be done
1447         my @chunk;
1448         if ($splitit) {
1449                 my $lth = 0;
1450                 my $lines = [];
1451                 for (@$ref) {
1452                         if ($lth >= $maxchunk || ($lth > $minchunk && /^\s*$/)) {
1453                                 push @chunk, $lines;
1454                                 $lines = [];
1455                                 $lth = 0;
1456                         }
1457                         push @$lines, $_;
1458                         $lth += length;
1459                 }
1460                 push @chunk, $lines if @$lines;
1461         } else {
1462                 push @chunk, $ref;
1463         }
1464
1465         # does an identical message already exist?
1466         my $m;
1467         for $m (@msg) {
1468                 if (substr($subject,0,28) eq substr($m->{subject},0,28) && $from eq $m->{from} && grep $m->{to} eq $_, @to) {
1469                         my $msgno = $m->{msgno};
1470                         dbg("duplicate message from $from -> $m->{to} to msg: $msgno") if isdbg('msg');
1471                         Log('msg', "duplicate message from $from -> $m->{to} to msg: $msgno");
1472                         return;
1473                 }
1474         }
1475
1476     # write all the messages away
1477         my $i;
1478         for ( $i = 0;  $i < @chunk; $i++) {
1479                 my $chunk = $chunk[$i];
1480                 my $ch_subject;
1481                 if (@chunk > 1) {
1482                         my $num = " [" . ($i+1) . "/" . scalar @chunk . "]";
1483                         $ch_subject = substr($subject, 0, 27 - length $num) .  $num;
1484                 } else {
1485                         $ch_subject = $subject;
1486                 }
1487                 my $to;
1488                 foreach $to (@to) {
1489                         my $systime = $main::systime;
1490                         my $mycall = $main::mycall;
1491                         my $mref = DXMsg->alloc(DXMsg::next_transno('Msgno'),
1492                                                                         $to,
1493                                                                         $from,
1494                                                                         $systime,
1495                                                                         $private,
1496                                                                         $ch_subject,
1497                                                                         $origin,
1498                                                                         '0',
1499                                                                         $rr);
1500                         $mref->swop_it($main::mycall);
1501                         $mref->store($chunk);
1502                         $mref->add_dir();
1503                         push @out, $dxchan->msg('m11', $mref->{msgno}, $to);
1504                         #push @out, "msgno $ref->{msgno} sent to $to";
1505                         $mref->notify;
1506                 }
1507         }
1508         return @out;
1509 }
1510
1511 #no strict;
1512 sub AUTOLOAD
1513 {
1514         my $self = shift;
1515         no strict;
1516         my $name = $AUTOLOAD;
1517         return if $name =~ /::DESTROY$/;
1518         $name =~ s/^.*:://o;
1519
1520         confess "Non-existant field '$AUTOLOAD'" if !$valid{$name};
1521         # this clever line of code creates a subroutine which takes over from autoload
1522         # from OO Perl - Conway
1523         *$AUTOLOAD = sub {@_ > 1 ? $_[0]->{$name} = $_[1] : $_[0]->{$name}};
1524         &$AUTOLOAD($self, @_);
1525 #       *{$AUTOLOAD} = sub {@_ > 1 ? $_[0]->{$name} = $_[1] : $_[0]->{$name}} ;
1526 #       @_ ? $self->{$name} = shift : $self->{$name} ;
1527 }
1528
1529 1;
1530
1531 __END__