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