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
 792         foreach $ref (@msg) {
 793                 # is it for me, private and unread?
 794                 if ($ref->{to} eq $call && $ref->{private}) {
 795                         return 1 if !$ref->{'read'};
 796                 }
 797         }
 798         return 0;
 799 }
 800
 801 # start the message off on its travels with a PC28
 802 sub start_msg
 803 {
 804         my ($self, $dxchan) = @_;
 805
 806         confess("trying to start started msg $self->{msgno} nodes: $self->{fromnode} -> $self->{tonode}") if $self->{tonode};
 807         dbg("start msg $self->{msgno}\n") if isdbg('msg');
 808         $self->{linesreq} = 10;
 809         $self->{count} = 0;
 810         $self->{tonode} = $dxchan->call;
 811         $self->{fromnode} = $main::mycall;
 812         set_busy($self->{tonode}, $self);
 813         set_fwq($self->{tonode}, undef, $self);
 814         $self->{lastt} = $main::systime;
 815         my ($fromnode, $origin);
 816         $fromnode = $self->{fromnode};
 817         $origin = $self->{origin};
 818         $dxchan->send(DXProt::pc28($self->{tonode}, $fromnode, $self->{to}, $self->{from}, $self->{t}, $self->{private}, $self->{subject}, $origin, $self->{rrreq}));
 819 }
 820
 821 # get the ref of a busy node
 822 sub get_busy
 823 {
 824         my $call = shift;
 825         return $busy{$call};
 826 }
 827
 828 sub set_busy
 829 {
 830         my $call = shift;
 831         return $busy{$call} = shift;
 832 }
 833
 834 sub del_busy
 835 {
 836         my $call = shift;
 837         return delete $busy{$call};
 838 }
 839
 840 # get the whole busy queue
 841 sub get_all_busy
 842 {
 843         return keys %busy;
 844 }
 845
 846 # get a forwarding queue entry
 847 sub get_fwq
 848 {
 849         my $call = shift;
 850         my $stream = shift || '0';
 851         return $work{"$call,$stream"};
 852 }
 853
 854 # delete a forwarding queue entry
 855 sub del_fwq
 856 {
 857         my $call = shift;
 858         my $stream = shift || '0';
 859         return delete $work{"$call,$stream"};
 860 }
 861
 862 # set a fwq entry
 863 sub set_fwq
 864 {
 865         my $call = shift;
 866         my $stream = shift || '0';
 867         return $work{"$call,$stream"} = shift;
 868 }
 869
 870 # get the whole forwarding queue
 871 sub get_all_fwq
 872 {
 873         return keys %work;
 874 }
 875
 876 # stop a message from continuing, clean it out, unlock interlocks etc
 877 sub stop_msg
 878 {
 879         my $self = shift;
 880         my $node = shift;
 881         my $stream = $self->{stream};
 882
 883
 884         dbg("stop msg $self->{msgno} -> node $node\n") if isdbg('msg');
 885         del_fwq($node, $stream);
 886         $self->workclean;
 887         del_busy($node);
 888 }
 889
 890 sub workclean
 891 {
 892         my $ref = shift;
 893         delete $ref->{lines};
 894         delete $ref->{linesreq};
 895         delete $ref->{tonode};
 896         delete $ref->{fromnode};
 897         delete $ref->{stream};
 898         delete $ref->{file};
 899         delete $ref->{count};
 900         delete $ref->{tempr};
 901         delete $ref->{lastt};
 902         delete $ref->{waitt};
 903 }
 904
 905 # get a new transaction number from the file specified
 906 sub next_transno
 907 {
 908         my $name = shift;
 909         $name =~ s/\W//og;                      # remove non-word characters
 910         my $fn = "$msgdir/$name";
 911         my $msgno;
 912
 913         my $fh = new IO::File;
 914         if (sysopen($fh, $fn, O_RDWR|O_CREAT, 0666)) {
 915                 $fh->autoflush(1);
 916                 $msgno = $fh->getline || '0';
 917                 chomp $msgno;
 918                 $msgno++;
 919                 seek $fh, 0, 0;
 920                 $fh->print("$msgno\n");
 921                 dbg("msgno $msgno allocated for $name\n") if isdbg('msg');
 922                 $fh->close;
 923         } else {
 924                 confess "can't open $fn $!";
 925         }
 926         return $msgno;
 927 }
 928
 929 # initialise the message 'system', read in all the message headers
 930 sub init
 931 {
 932         my $dir = new IO::File;
 933         my @dir;
 934         my $ref;
 935
 936         # load various control files
 937         dbg("load badmsg: " . (load_badmsg() or "Ok"));
 938         dbg("load forward: " . (load_forward() or "Ok"));
 939         dbg("load swop: " . (load_swop() or "Ok"));
 940
 941         # read in the directory
 942         opendir($dir, $msgdir) or confess "can't open $msgdir $!";
 943         @dir = readdir($dir);
 944         closedir($dir);
 945
 946         @msg = ();
 947         for (sort @dir) {
 948                 next unless /^m\d\d\d\d\d\d$/;
 949
 950                 $ref = read_msg_header("$msgdir/$_");
 951                 unless ($ref) {
 952                         dbg("Deleting $_");
 953                         Log('err', "Deleting $_");
 954                         unlink "$msgdir/$_";
 955                         next;
 956                 }
 957
 958                 # delete any messages to 'badmsg.pl' places
 959                 if ($ref->dump_it('')) {
 960                         dbg("'Bad' TO address $ref->{to}") if isdbg('msg');
 961                         Log('msg', "'Bad' TO address $ref->{to}");
 962                         $ref->del_msg;
 963                         next;
 964                 }
 965
 966                 # add the message to the available queue
 967                 add_dir($ref);
 968         }
 969 }
 970
 971 # add the message to the directory listing
 972 sub add_dir
 973 {
 974         my $ref = shift;
 975         confess "tried to add a non-ref to the msg directory" if !ref $ref;
 976         push @msg, $ref;
 977 }
 978
 979 # return all the current messages
 980 sub get_all
 981 {
 982         return @msg;
 983 }
 984
 985 # get a particular message
 986 sub get
 987 {
 988         my $msgno = shift;
 989         for (@msg) {
 990                 return $_ if $_->{msgno} == $msgno;
 991                 last if $_->{msgno} > $msgno;
 992         }
 993         return undef;
 994 }
 995
 996 # return the official filename for a message no
 997 sub filename
 998 {
 999         return sprintf "$msgdir/m%06d", shift;
1000 }
1001
1002 #
1003 # return a list of valid elements
1004 #
1005
1006 sub fields
1007 {
1008         return keys(%valid);
1009 }
1010
1011 #
1012 # return a prompt for a field
1013 #
1014
1015 sub field_prompt
1016 {
1017         my ($self, $ele) = @_;
1018         return $valid{$ele};
1019 }
1020
1021 #
1022 # send a message state machine
1023 sub do_send_stuff
1024 {
1025         my $self = shift;
1026         my $line = shift;
1027         my @out;
1028
1029         if ($self->state eq 'send1') {
1030                 #  $DB::single = 1;
1031                 confess "local var gone missing" if !ref $self->{loc};
1032                 my $loc = $self->{loc};
1033                 if (my @ans = BadWords::check($line)) {
1034                         $self->{badcount} += @ans;
1035                         Log('msg', $self->call . " used badwords: @ans to @{$loc->{to}} in msg");
1036                         $loc->{reject}++;
1037                 }
1038                 $loc->{subject} = $line;
1039                 $loc->{lines} = [];
1040                 $self->state('sendbody');
1041                 #push @out, $self->msg('sendbody');
1042                 push @out, $self->msg('m8');
1043         } elsif ($self->state eq 'sendbody') {
1044                 confess "local var gone missing" if !ref $self->{loc};
1045                 my $loc = $self->{loc};
1046                 if ($line eq "\032" || $line eq '%1A' || uc $line eq "/EX") {
1047                         my $to;
1048                         unless ($loc->{reject}) {
1049                                 foreach $to (@{$loc->{to}}) {
1050                                         my $ref;
1051                                         my $systime = $main::systime;
1052                                         my $mycall = $main::mycall;
1053                                         $ref = DXMsg->alloc(DXMsg::next_transno('Msgno'),
1054                                                                                 uc $to,
1055                                                                                 exists $loc->{from} ? $loc->{from} : $self->call,
1056                                                                                 $systime,
1057                                                                                 $loc->{private},
1058                                                                                 $loc->{subject},
1059                                                                                 exists $loc->{origin} ? $loc->{origin} : $mycall,
1060                                                                                 '0',
1061                                                                                 $loc->{rrreq});
1062                                         $ref->swop_it($self->call);
1063                                         $ref->store($loc->{lines});
1064                                         $ref->add_dir();
1065                                         push @out, $self->msg('m11', $ref->{msgno}, $to);
1066                                         #push @out, "msgno $ref->{msgno} sent to $to";
1067                                         $ref->notify;
1068                                 }
1069                         } else {
1070                                 Log('msg', $self->call . " swore to @{$loc->{to}} subject: '$loc->{subject}' in msg, REJECTED");
1071                         }
1072
1073                         delete $loc->{lines};
1074                         delete $loc->{to};
1075                         delete $self->{loc};
1076                         $self->func(undef);
1077
1078                         $self->state('prompt');
1079                 } elsif ($line eq "\031" || uc $line eq "/ABORT" || uc $line eq "/QUIT") {
1080                         #push @out, $self->msg('sendabort');
1081                         push @out, $self->msg('m10');
1082                         delete $loc->{lines};
1083                         delete $loc->{to};
1084                         delete $self->{loc};
1085                         $self->func(undef);
1086                         $self->state('prompt');
1087                 } else {
1088                         if (my @ans = BadWords::check($line)) {
1089                                 $self->{badcount} += @ans;
1090                                 Log('msg', $self->call . " used badwords: @ans to @{$loc->{to}} subject: '$loc->{subject}' in msg") unless $loc->{reject};
1091                                 Log('msg', "line: $line");
1092                                 $loc->{reject}++;
1093                         }
1094
1095                         if ($loc->{lines} && @{$loc->{lines}}) {
1096                                 push @{$loc->{lines}}, length($line) > 0 ? $line : " ";
1097                         } else {
1098                                 # temporarily store any R: lines so that we end up with
1099                                 # only the first and last ones stored.
1100                                 if ($line =~ m|^R:\d{6}/\d{4}|) {
1101                                         push @{$loc->{tempr}}, $line;
1102                                 } else {
1103                                         if (exists $loc->{tempr}) {
1104                                                 push @{$loc->{lines}}, shift @{$loc->{tempr}};
1105                                                 push @{$loc->{lines}}, pop @{$loc->{tempr}} if @{$loc->{tempr}};
1106                                                 delete $loc->{tempr};
1107                                         }
1108                                         push @{$loc->{lines}}, length($line) > 0 ? $line : " ";
1109                                 }
1110                         }
1111
1112                         # i.e. it ain't and end or abort, therefore store the line
1113                 }
1114         }
1115         return @out;
1116 }
1117
1118 # return the standard directory line for this ref
1119 sub dir
1120 {
1121         my $ref = shift;
1122         my $flag = $ref->{private} && $ref->{read} ? '-' : ' ';
1123         if ($ref->{delete}) {
1124                 $flag = $ref->{deletetime} > $main::systime ? 'D' : 'E';
1125         }
1126         return sprintf("%6d%s%s%5d %8.8s %8.8s %-6.6s %5.5s %-30.30s",
1127                                    $ref->{msgno}, $flag, $ref->{private} ? 'p' : ' ',
1128                                    $ref->{size}, $ref->{to}, $ref->{from}, cldate($ref->{t}),
1129                                    ztime($ref->{t}), $ref->{subject});
1130 }
1131
1132 # load the forward table
1133 sub load_forward
1134 {
1135         my @out;
1136         my $s = readfilestr($forwardfn);
1137         if ($s) {
1138                 eval $s;
1139                 push @out, $@ if $@;
1140         }
1141         return @out;
1142 }
1143
1144 # load the bad message table
1145 sub load_badmsg
1146 {
1147         my @out;
1148         my $s = readfilestr($badmsgfn);
1149         if ($s) {
1150                 eval $s;
1151                 push @out, $@ if $@;
1152         }
1153         return @out;
1154 }
1155
1156 # load the swop message table
1157 sub load_swop
1158 {
1159         my @out;
1160         my $s = readfilestr($swopfn);
1161         if ($s) {
1162                 eval $s;
1163                 push @out, $@ if $@;
1164         }
1165         return @out;
1166 }
1167
1168 #
1169 # forward that message or not according to the forwarding table
1170 # returns 1 for forward, 0 - to ignore
1171 #
1172
1173 sub forward_it
1174 {
1175         my $ref = shift;
1176         my $call = shift;
1177         my $i;
1178
1179         for ($i = 0; $i < @forward; $i += 5) {
1180                 my ($sort, $field, $pattern, $action, $bbs) = @forward[$i..($i+4)];
1181                 my $tested;
1182
1183                 # are we interested?
1184                 next if $ref->{private} && $sort ne 'P';
1185                 next if !$ref->{private} && $sort ne 'B';
1186
1187                 # select field
1188                 $tested = $ref->{to} if $field eq 'T';
1189                 $tested = $ref->{from} if $field eq 'F';
1190                 $tested = $ref->{origin} if $field eq 'O';
1191                 $tested = $ref->{subject} if $field eq 'S';
1192
1193                 if (!$pattern || $tested =~ m{$pattern}i) {
1194                         return 0 if $action eq 'I';
1195                         return 1 if !$bbs || grep $_ eq $call, @{$bbs};
1196                 }
1197         }
1198         return 0;
1199 }
1200
1201 #
1202 # look down the forward table to see whether this is a valid bull
1203 # or not (ie it will forward somewhere even if it is only here)
1204 #
1205 sub valid_bull_addr
1206 {
1207         my $call = shift;
1208         my $i;
1209
1210         unless (@forward) {
1211                 return 1 if $call =~ /^ALL/;
1212                 return 1 if $call =~ /^DX/;
1213                 return 0;
1214         }
1215
1216         for ($i = 0; $i < @forward; $i += 5) {
1217                 my ($sort, $field, $pattern, $action, $bbs) = @forward[$i..($i+4)];
1218                 if ($field eq 'T') {
1219                         if (!$pattern || $call =~ m{$pattern}i) {
1220                                 return 1;
1221                         }
1222                 }
1223         }
1224         return 0;
1225 }
1226
1227 sub dump_it
1228 {
1229         my $ref = shift;
1230         my $call = shift;
1231         my $i;
1232
1233         for ($i = 0; $i < @badmsg; $i += 3) {
1234                 my ($sort, $field, $pattern) = @badmsg[$i..($i+2)];
1235                 my $tested;
1236
1237                 # are we interested?
1238                 next if $ref->{private} && $sort ne 'P';
1239                 next if !$ref->{private} && $sort ne 'B';
1240
1241                 # select field
1242                 $tested = $ref->{to} if $field eq 'T';
1243                 $tested = $ref->{from} if $field eq 'F';
1244                 $tested = $ref->{origin} if $field eq 'O';
1245                 $tested = $ref->{subject} if $field eq 'S';
1246                 $tested = $call if $field eq 'I';
1247
1248                 if (!$pattern || $tested =~ m{$pattern}i) {
1249                         return 1;
1250                 }
1251         }
1252         return 0;
1253 }
1254
1255 sub swop_it
1256 {
1257         my $ref = shift;
1258         my $call = shift;
1259         my $i;
1260         my $count = 0;
1261
1262         for ($i = 0; $i < @swop; $i += 5) {
1263                 my ($sort, $field, $pattern, $tfield, $topattern) = @swop[$i..($i+4)];
1264                 my $tested;
1265                 my $swop;
1266                 my $old;
1267
1268                 # are we interested?
1269                 next if $ref->{private} && $sort ne 'P';
1270                 next if !$ref->{private} && $sort ne 'B';
1271
1272                 # select field
1273                 $tested = $ref->{to} if $field eq 'T';
1274                 $tested = $ref->{from} if $field eq 'F';
1275                 $tested = $ref->{origin} if $field eq 'O';
1276                 $tested = $ref->{subject} if $field eq 'S';
1277
1278                 # select swop field
1279                 $old = $swop = $ref->{to} if $tfield eq 'T';
1280                 $old = $swop = $ref->{from} if $tfield eq 'F';
1281                 $old = $swop = $ref->{origin} if $tfield eq 'O';
1282                 $old = $swop = $ref->{subject} if $tfield eq 'S';
1283
1284                 if ($tested =~ m{$pattern}i) {
1285                         if ($tested eq $swop) {
1286                                 $swop =~ s{$pattern}{$topattern}i;
1287                         } else {
1288                                 $swop = $topattern;
1289                         }
1290                         Log('msg', "Msg $ref->{msgno}: $tfield $old -> $swop");
1291                         Log('dbg', "Msg $ref->{msgno}: $tfield $old -> $swop");
1292                         $ref->{to} = $swop if $tfield eq 'T';
1293                         $ref->{from} = $swop if $tfield eq 'F';
1294                         $ref->{origin} = $swop if $tfield eq 'O';
1295                         $ref->{subject} = $swop if $tfield eq 'S';
1296                         ++$count;
1297                 }
1298         }
1299         return $count;
1300 }
1301
1302 # import any msgs in the import directory
1303 # the messages are in BBS format (but may have cluster extentions
1304 # so SB UK < GB7TLH is legal
1305 sub import_msgs
1306 {
1307         # are there any to do in this directory?
1308         return unless -d $importfn;
1309         unless (opendir(DIR, $importfn)) {
1310                 dbg("can\'t open $importfn $!") if isdbg('msg');
1311                 Log('msg', "can\'t open $importfn $!");
1312                 return;
1313         }
1314
1315         my @names = readdir(DIR);
1316         closedir(DIR);
1317         my $name;
1318         foreach $name (@names) {
1319                 next if $name =~ /^\./;
1320                 my $splitit = $name =~ /^split/;
1321                 my $fn = "$importfn/$name";
1322                 next unless -f $fn;
1323                 unless (open(MSG, $fn)) {
1324                         dbg("can\'t open import file $fn $!") if isdbg('msg');
1325                         Log('msg', "can\'t open import file $fn $!");
1326                         unlink($fn);
1327                         next;
1328                 }
1329                 my @msg = map { chomp; $_ } <MSG>;
1330                 close(MSG);
1331                 unlink($fn);
1332                 my @out = import_one($main::me, \@msg, $splitit);
1333                 Log('msg', @out);
1334         }
1335 }
1336
1337 # import one message as a list in bbs (as extended) mode
1338 # takes a reference to an array containing the whole message
1339 sub import_one
1340 {
1341         my $dxchan = shift;
1342         my $ref = shift;
1343         my $splitit = shift;
1344         my $private = '1';
1345         my $rr = '0';
1346         my $notincalls = 1;
1347         my $from = $dxchan->call;
1348         my $origin = $main::mycall;
1349         my @to;
1350         my @out;
1351
1352         # first line;
1353         my $line = shift @$ref;
1354         my @f = split /([\s\@\$])/, $line;
1355         @f = map {s/\s+//g; length $_ ? $_ : ()} @f;
1356
1357         unless (@f && $f[0] =~ /^(:?S|SP|SB|SEND)$/ ) {
1358                 my $m = "invalid first line in import '$line'";
1359                 dbg($m) if isdbg('msg');
1360                 return (1, $m);
1361         }
1362         while (@f) {
1363                 my $f = uc shift @f;
1364                 next if $f eq 'SEND';
1365
1366                 # private / noprivate / rr
1367                 if ($notincalls && ($f eq 'B' || $f eq 'SB' || $f =~ /^NOP/oi)) {
1368                         $private = '0';
1369                 } elsif ($notincalls && ($f eq 'P' || $f eq 'SP' || $f =~ /^PRI/oi)) {
1370                         ;
1371                 } elsif ($notincalls && ($f eq 'RR')) {
1372                         $rr = '1';
1373                 } elsif (($f =~ /^[\@\.\#\$]$/ || $f eq '.#') && @f) {       # this is bbs syntax, for AT
1374                         shift @f;
1375                 } elsif ($f eq '<' && @f) {     # this is bbs syntax  for from call
1376                         $from = uc shift @f;
1377                 } elsif ($f =~ /^\$/) {     # this is bbs syntax  for a bid
1378                         next;
1379                 } elsif ($f =~ /^<(\S+)/) {     # this is bbs syntax  for from call
1380                         $from = $1;
1381                 } elsif ($f =~ /^\$\S+/) {     # this is bbs syntax for bid
1382                         ;
1383                 } else {
1384
1385                         # callsign ?
1386                         $notincalls = 0;
1387
1388                         # is this callsign a distro?
1389                         my $fn = "$msgdir/distro/$f.pl";
1390                         if (-e $fn) {
1391                                 my $fh = new IO::File $fn;
1392                                 if ($fh) {
1393                                         local $/ = undef;
1394                                         my $s = <$fh>;
1395                                         $fh->close;
1396                                         my @call;
1397                                         @call = eval $s;
1398                                         return (1, "Error in Distro $f.pl:", $@) if $@;
1399                                         if (@call > 0) {
1400                                                 push @f, @call;
1401                                                 next;
1402                                         }
1403                                 }
1404                         }
1405
1406                         if (grep $_ eq $f, @DXMsg::badmsg) {
1407                                 push @out, $dxchan->msg('m3', $f);
1408                         } else {
1409                                 push @to, $f;
1410                         }
1411                 }
1412         }
1413
1414         # subject is the next line
1415         my $subject = shift @$ref;
1416
1417         # strip off trailing lines
1418         pop @$ref while (@$ref && $$ref[-1] =~ /^\s*$/);
1419
1420         # strip off /EX or /ABORT
1421         return ("aborted") if @$ref && $$ref[-1] =~ m{^/ABORT$}i;
1422         pop @$ref if (@$ref && $$ref[-1] =~ m{^/EX$}i);
1423
1424         # sort out any splitting that needs to be done
1425         my @chunk;
1426         if ($splitit) {
1427                 my $lth = 0;
1428                 my $lines = [];
1429                 for (@$ref) {
1430                         if ($lth >= $maxchunk || ($lth > $minchunk && /^\s*$/)) {
1431                                 push @chunk, $lines;
1432                                 $lines = [];
1433                                 $lth = 0;
1434                         }
1435                         push @$lines, $_;
1436                         $lth += length;
1437                 }
1438                 push @chunk, $lines if @$lines;
1439         } else {
1440                 push @chunk, $ref;
1441         }
1442
1443         # does an identical message already exist?
1444         my $m;
1445         for $m (@msg) {
1446                 if (substr($subject,0,28) eq substr($m->{subject},0,28) && $from eq $m->{from} && grep $m->{to} eq $_, @to) {
1447                         my $msgno = $m->{msgno};
1448                         dbg("duplicate message from $from -> $m->{to} to msg: $msgno") if isdbg('msg');
1449                         Log('msg', "duplicate message from $from -> $m->{to} to msg: $msgno");
1450                         return;
1451                 }
1452         }
1453
1454     # write all the messages away
1455         my $i;
1456         for ( $i = 0;  $i < @chunk; $i++) {
1457                 my $chunk = $chunk[$i];
1458                 my $ch_subject;
1459                 if (@chunk > 1) {
1460                         my $num = " [" . ($i+1) . "/" . scalar @chunk . "]";
1461                         $ch_subject = substr($subject, 0, 27 - length $num) .  $num;
1462                 } else {
1463                         $ch_subject = $subject;
1464                 }
1465                 my $to;
1466                 foreach $to (@to) {
1467                         my $systime = $main::systime;
1468                         my $mycall = $main::mycall;
1469                         my $mref = DXMsg->alloc(DXMsg::next_transno('Msgno'),
1470                                                                         $to,
1471                                                                         $from,
1472                                                                         $systime,
1473                                                                         $private,
1474                                                                         $ch_subject,
1475                                                                         $origin,
1476                                                                         '0',
1477                                                                         $rr);
1478                         $mref->swop_it($main::mycall);
1479                         $mref->store($chunk);
1480                         $mref->add_dir();
1481                         push @out, $dxchan->msg('m11', $mref->{msgno}, $to);
1482                         #push @out, "msgno $ref->{msgno} sent to $to";
1483                         $mref->notify;
1484                 }
1485         }
1486         return @out;
1487 }
1488
1489 no strict;
1490 sub AUTOLOAD
1491 {
1492         my $self = shift;
1493         my $name = $AUTOLOAD;
1494         return if $name =~ /::DESTROY$/;
1495         $name =~ s/.*:://o;
1496
1497         confess "Non-existant field '$AUTOLOAD'" if !$valid{$name};
1498         # this clever line of code creates a subroutine which takes over from autoload
1499         # from OO Perl - Conway
1500         *{$AUTOLOAD} = sub {@_ > 1 ? $_[0]->{$name} = $_[1] : $_[0]->{$name}} ;
1501         @_ ? $self->{$name} = shift : $self->{$name} ;
1502 }
1503
1504 1;
1505
1506 __END__